US3075810A - Multiple purpose chair - Google Patents

Multiple purpose chair Download PDF

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US3075810A
US3075810A US76561A US7656160A US3075810A US 3075810 A US3075810 A US 3075810A US 76561 A US76561 A US 76561A US 7656160 A US7656160 A US 7656160A US 3075810 A US3075810 A US 3075810A
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chair
main frame
seat
adjustable
rocking
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US76561A
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George N Kitsopoulos
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    • AHUMAN NECESSITIES
    • A47FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47CCHAIRS; SOFAS; BEDS
    • A47C7/00Parts, details, or accessories of chairs or stools
    • A47C7/54Supports for the arms
    • A47C7/543Supports for the arms movable to inoperative position
    • AHUMAN NECESSITIES
    • A47FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47CCHAIRS; SOFAS; BEDS
    • A47C1/00Chairs adapted for special purposes
    • A47C1/02Reclining or easy chairs
    • A47C1/022Reclining or easy chairs having independently-adjustable supporting parts
    • A47C1/028Reclining or easy chairs having independently-adjustable supporting parts for changing a straight chair into an easy chair, e.g. by inverting or tilting seat and back-rest in the base frame or by overturning the whole chair
    • A47C1/029Reclining or easy chairs having independently-adjustable supporting parts for changing a straight chair into an easy chair, e.g. by inverting or tilting seat and back-rest in the base frame or by overturning the whole chair by changing the length or the inclination of the legs
    • AHUMAN NECESSITIES
    • A47FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47CCHAIRS; SOFAS; BEDS
    • A47C3/00Chairs characterised by structural features; Chairs or stools with rotatable or vertically-adjustable seats
    • A47C3/02Rocking chairs
    • A47C3/029Rocking chairs with curved rocking members resting on the floor
    • AHUMAN NECESSITIES
    • A47FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47CCHAIRS; SOFAS; BEDS
    • A47C7/00Parts, details, or accessories of chairs or stools
    • A47C7/002Chair or stool bases
    • AHUMAN NECESSITIES
    • A47FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47CCHAIRS; SOFAS; BEDS
    • A47C7/00Parts, details, or accessories of chairs or stools
    • A47C7/002Chair or stool bases
    • A47C7/006Chair or stool bases with castors
    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10STECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S297/00Chairs and seats
    • Y10S297/04Wheelchair

Definitions

  • This invention relates generally to new multi-purpose chair constructions and more particularly to improvements in a multipurpose chair of the type which is selectively adjustable to various uses and positions.
  • the invention consists in the construction, arrangement and combination of the various parts of the novel multipurpose chair construction whereby the objects contemplated are attained as hereinafter set forth.
  • the various features of the novelty which characterize this invention are pointed out with particularity in the claims annexed to and forming a part of this specification.
  • FIGURE 1 is a perspective view of one preferred illustrative embodiment of the invention in its low relaxation chair position and having the pivotable legs withdrawn to permit the chair to serve as a rocking chair;
  • FIGURE 2 is a perspective view of a preferred illus trative embodiment of this invention showing the chair with the seat in the regular chair position and having the pivotable leg means recessed to permit the chair to servev as a stationary chair;
  • FIGURE 3 is a rear elevational view of the chair as shown in FIGURE 2 of the drawing;
  • FIGURE 4 is a top plan view of the chair shown in FIGURES 2 and 3 of the drawing;
  • FIGURE 5 is a side elevational view of the invention, partly broken away and partly in cross-section for pur poses of illustration, showing the adjustable higher 'arm' rests, the pivotable leg means, and the arcuate shoe features of the invention, taken substantially as shown along line 55 of FIGURE 3; and
  • FIGURE 6 is a cross-sectional view illustrating the adjustable control means for the pivotable legs as taken substantially as shown along line 6-6 of FIGURE 3.
  • FIGURES l, 2 and 3 thereof there is shown a specific illustrative embodiment of the invention which is an improvement over the multiple purpose chair shown in my copending application, S.N. 809,029.
  • FIGURE 1 of the drawing illustrates the multiple purpose chair of the present invention with the seat in the low relaxation position and with the pivotable legs withdrawn from the chair main frame to permit the chair to serve as a rocking chair.
  • the multiple purpose chair of the present invention shows the invention with the seat in the regular chair position and with the pivotable legs recessed to permit the chair to serve as a stationary chair.
  • each base member may be substantially U-shaped, as shown, with the base members 12' and 14 and which extends therebetween at the rear portion of the chair.
  • the multiple purpose chair of the present invention advantageously is provided withsuitable supporting-cross bars on its mainframe, such as the rearcross bar 18 extending between the base members 12 and it.
  • the chair further comprises a substantially horizontally positioned seat 20-which also is supported on" the main frame 10 between the base members 12 and 14.
  • the base members Hand 14 may be provided with suitable side cross-bars to receive the seat 20, in the manner illustrated in my, co-pending application.
  • a pair of side pads 22and 24- are pivoted to the opposite sides of the seat 20 such that the side pads may be pivoted outwardly in horizontal. position as shown in FIGURE 1 of the drawing or,alterna tively, pivoted to a vertical position to support the seat 20 as shown in FIGURES 2 and 3 of the drawing.
  • the height of'the arm rests, 26 .and 32 may be adjusted in a desired manner' with respect to the seat 20 by the operation of suitable finger levers 34 which serve to release an .arm'restratchet-locking means provided within the support sleeves 28 and 30. comprising the present invention, the actuation of the finger.
  • levers 34 serves to release the arm rests 1.26 and 3,2-so,that theirfvertical position may be adjusted, as desired, and the release of thefinger levers 34 looks the arm rest in place to provide maximum comfort-tow the user of the chair.
  • the side pads; 22. and 24 are pivoted into their generally vertical 'po-- sition with the result that the support sleeves 28 and 30 and the arm rests 26 and 32 are placed in a generally horizontal position; This is particularly illustrated, for example, in FIGURE 3 of the drawing. It can'there beseen' that when the side pads and the arm rests are In the use of the multiple purpose chair in the latter position, they serve to support the seat 20 in its raised, regular chair position.
  • the seat 29 advantageously is made vertically adjustable in any suitable manner, such as that disclosed in the earlier co-pending application with the result that the seat 28 may be raised to the regular chair position and supported thereat by the side pads 22 and 24 together with the arm rests 26 and 32.
  • the main frame advantageously is generally tubular in construction and the base members 12 and 14 are provided with suitable recess portions, said recesses being shown as 34 and 36 respectively, capable of receiving the pivotable legs38 and 40 in a nested fashion.
  • the pivotable leg 38 is pivoted to the base member 12, as at the pivot member 42, and the pivotable leg 40 is pivoted to the base member 14, as at the pivot member 44.
  • Each pivotable leg is provided with a suitable roller or caster 46 at the lower extremity thereof and advantageously a horizontal crossbar 48 may be provided between recesses 34 and 36, respectively, of base members 12 and 14. In this position, the rollers or casters d6 are placed directly adjacent the base members with the result that rocking action of the chair is prevented and the chair serves as a stationary chair.
  • a rotatable lock knob 59 is provided on the horizontal cross bar 18 of the main frame 10.
  • Rotation of the lock knob" 50 serves to release the pivotable legs 38and 40 such that the weight of a person sitting on the chair causes the pivotable legs 38 and 40 to move outwardly from their nested position and away from the base members 12 and 14 of the chair.
  • the sweep or degree of outward movement of such pivotable legs 38 and 40 may be governed by the amount of rotation of the lock knob 54], said rotation of lock knob 50 being transmitted to the pivotable legs by means of a unique arrangement within the horizontal cross bar 18 and by means of flexible connectors 52 and 54'associated with the pivotable legs 38 and 40 respectively.
  • the arm rest 26 for example, is secured to a substantially U-shaped support member 56, the opposite arms of which are slidably disposed within the support sleeves 28 and 30, respectively.
  • the inner wall of the support sleeve 28 is provided with a plurality of ratchet teeth 58 and the inner wall of the support sleeve 30 is provided with a plurality of ratchet teeth 60.
  • a portion of each arm of the U-shaped arm rest support member 56 is cut away, as at 62, to expose the ratchet teeth 58 and 60 to the interior of the support member arms.
  • a ratchet 64 is pivotally mounted within one arm of the arm rest support member, as by means of the pivot 66, so as to engage the ratchet teeth 58 therewithin.
  • a ratchet 68 is pivotally mounted within the other arm of the arm rest support member 56, as by means of the pivot 70, so as to engage the ratchet teeth 60 therewithin.
  • each of the ratchets 64 and 68 is connected by means of the flexible connecting member 72 to the arm rest finger lever 34 which is pivotally mounted within the arm rest support member 56 and which has a finger-engaging portion extending through an opening in the arm rest support member so as to be manually actuatable to raise or lower the arm rest, as desired.
  • the two ratchets 64 and 68 are connected by means of the flexible connector 72 to a suitable point 74 on the finger lever 34, and when the finger lever is manually actuated about its pivot 76, the flexible connector 72 pivots each of the ratchets out of engagement with its associated ratchet teeth to permit the arm rest 26 to be selectively adjusted with respect to the seat 20.
  • the arm rest 26 may be pulled upwardly without actuation of the finger lever 34, due to the angular relationship between the ratchet teeth and the ratchet and that the arm rest will be locked into any position into which it is pulled. Conversely, when the arm rest 26 is to be lowered, it merely is necessary to actuate the finger lever 34 to release the ratchets 64 and 68, and the arm rest 26 may be lowered to any desired position. When this desired position is reached the finger lever 34 is released and the ratchets engage the ratchet teeth to lock the arm rest in place.
  • each ratchet 64 and 68 may be provided with suitable spring return means (herein not shown) and each ratchet may be supplied with a stop member to limit its rotation, such as the stop member 80 associated with ratchet 64 and the stop member 82 associated with the ratchet 68.
  • the position of the pivotable legs 38 and 40 may selectively be adjusted with respect to the main tubular frame 12.
  • a rotatable lock knob 50 which is journaled within a housing collar 84 secured to the back of the rear cross bar 18.
  • the shaft 86 of the lock knob 50 is provided with an internal thread adapted to be operatively associated with a threaded stem 88 such that rotation of the lock knob 50 causes the threaded stem 88 to be moved into or out of the rear cross bar 18 in a manner determined by the direction of rotation of the lock knob.
  • a pair of lock arms 90 and 92 are pivotally secured at one end thereof to the threaded stem 88, as by means of the pivot member 94.
  • Each lock arm is arcuate in shape such that the linear movement of the threaded stem 88 in response to the rotation of lock knob 50 causes the lock arms 90 and 92 to be pivotally rotated in opposite directions about the pivot member 94. This operation is facilitated by means of a pair of coil springs connected between the lock arms and the pivot member 94.
  • a coil spring 96 is secured between the lock arm 90 and a point 98 on the stop member 100 around the pivot 6. member 94.
  • a coil spring 102 is connected between the lock arm 92 and the point 98.
  • the movement of the lock arms 90 and 92 may be used to control the rocking sweep of the pivotable legs 38 and 40.
  • a flexible connector 54 is secured to the outer end of the lock arm 90, as by means of the loop 106 about the pin 108.
  • This flexible connector 54 is threaded past the rotatable track pulley 110 within the rear cross bar 18, and the rotatable track pulley 112 within the back rest 16 of the main frame, to the roller bearing 114 and the track pulley 116 within the pivotable leg 38, where it terminates in the loop 118 secured to the pin 120 within the pivotable leg.
  • the flexible connector 122 is secured to the lock arm 92 as by means of the loop 124 and the pin 128, and this flexible connector is threaded past the track pulley within cross bar 18, and track pulley 132 within back rest 16, to a roller bearing and further track pulley within the pivotable leg 40 where it is secured thereto.
  • each base member 12 and 1 4 advantageously is provided with an arcuate shoe 136, preferably formed of some material such as wood, plastic or the like.
  • each arcuate shoe 136 is fitted within the recess formed by the tubular frame and is secured thereto by any suitable means, such as the fasteners 138.
  • the arcuate shoe 136 is slightly greater in the vertical dimension than the base members 12 or 14 so as to insure contact between the arcuate shoe and the surface upon which the chair rests.
  • the tubular main frame may be of a lightweight metal construction since the arcuate shoe means serves to protect the main frame base from wear and gives a stronger rocking base' with constructions other than the particular illustrative embodiments described herein, and that various changes and-modifications maybe made without departing from the-principles ofthe invention- Therefore, it is intended to cover in theappended claims any changes and modificadons-which fall within the true'spirit and scope of this invention.
  • a multiple purpose chair having a plurality of selectively adjustable positions comprising a tubular main frame, a seat adapted to be supported at a selectively adjustable height on said main frame, means associated with said seat for enabling the seat to be raised and lowered with respect to saidframe, said means comprising a support member pivotally secured to each side of said main frame, said support members being adapted to be folded in horizontal position for supporting the seat when the chair is serving as a regular chair and being further adapted to be unfolded into a vertical position for permitting the seat to be lowered therebetween when the chair is serving as a low profile relaxation chair, an arm rest on each support member, manually actuatable means for enabling each arm rest to be raised or lowered with respect to its support member, adjustable leg means pivotally secured to the rear of said main frame, said main frame defining recesses for receiving said adjustable leg means in nested fashion when the chair is serving as a stationary chair, adjustable lock means for releasing said adjustable leg means to permit the latter to bemoved outwardly away from the main frame when
  • a multiple'purpose chair having a plurality of selectively adjustable positions comprising a tubular main frame, a seat adapted to be supported at a selectively adjustable height on said main frame, means associated with said seat for enabling the seat to be raised and lowered with respect to said frame, said means comprising a support member pivotally secured to each side of said main frame, said support members being adapted to be folded in horizontal position for supporting the seat when the chair is serving as a regular chair and being further adapted to be unfolded into a vertical position for permitting the seat to be lowered therebetween when the chair is serving as a low profile relaxation chair, adjustable'leg means pivotally secured to the rear of said main frame, said main frame defining recesses for receiving said adjustable leg means in nested fashion when the chair is serving as a stationary chair, adjustable lock means for releasing said adjustable leg means to permit the latter to be moved outwardly away from the main frame when the chair is serving as a rocking chair and, actuating means operatively associated with said adjustable lock means and said adjustable leg means to cause the latter
  • a multiple purpose chair having a plurality of selectively adjustable positions comprising a tubular main frame,.a seat adapted to be supported at a selectively 8 adjustable height on said main frame, means associatedwith said seat for enabling the'seat to be raised and lowered with respect to said frame, said means comprisinga support member pivotally secured to each side' ofsaid mainframe, said support members being adapted to be folded in horizontal position for supporting the seat when the chair is serving as aregular chair and beingfurther adapted to be unfolded into a vertical position for permitting the seat to be lowered thcrebetween when the chair is serving' as-a low profile relaxation chair, adjustable leg.
  • adjustable lock means for releasing said adjustable leg.
  • a multiple purpose chair having a plurality of selectively adjustable positions comprising a tubular main frame, a seat adapted to be supported at a selectively: adjustable height on said main frame, means associated with said seat for enabling the seat to be raised and lowered with respect to said frame, adjustable leg means pivotally secured to the rear of said main frame, said main frame defining recesses for receiving said adjustable leg means in nested fashion when the chair is serving as a stationary chair, manually adjustable lock meansfor releasing said adjustable leg means to permit the latter to be moved outwardly away from the main frame when the chair is serving as a rocking chair, and actuating means operatively associated with said adjustable lock means and said adjustable leg means to cause the latter to be moved inwardly towards the main frame a desired amount for adjusting the rocking sweep of said chair, and for nesting said leg means within said mainframe recesses toenable said chair to serve as a stationary chair.
  • a multiple purpose chair having a plurality of selectively adjustable positions comprising a main frame, a seat adapted to be supported at a selectively adjustable height on said main frame, means associated with said seat for enabling'the seat to be raised and lowered with respect-to said frame, said means comprising a support pad pivotally secured to each side of said main frame; each support pad being adapted to be folded into a first position for supporting the seat when the chair is serving as a regular chair and being further adapted to be unfolded into a second position for permitting the seat to be lowered therebetween to provide additional sitting area when the chair is serving as a low profile relaxation chair, an arm rest support on each support pad, said arm rests'being hidden when the support pads are folded into said first position to thereby provide the chair with an attractive appearance, manually actuatable means for enabling each arm rest to be raised or lowered with respect to its support pad, and adjustable leg means pivotally secured to the rear of said main frame for adjusting the rocking sweep of said chair when the'latter is serving as a rocking chair
  • a multiple purpose chair having a plurality of selectively adjustable positions comprising a main frame, a seat adapted to be supported at a selectively adjustable height on said main frame, means associated with said seat for enabling the seat to be raised and lowered with respect to said frame, adjusable leg means pivotally secured to the rear of said main frame, said main frame defining recesses for receiving said adjustable leg means in nested fashion when the chair is serving as a stationary chair and, adjustable lock means for releasing said adjustable leg means to permit the latter to be moved-out- 9 wardly away from the main frame when the chair is serving as a rocking chair.
  • a multiple purpose chair having a plurality of selectively adjustable positions comprising a main frame, a seat adapted to be supported at a selectively adjustable height on said main frame, means associated with said seat for enabling the seat to be raised or lowered with respect to said frame, adjustable leg means pivotally secured to the rear of said main frame to permit the chair to serve as a stationary chair or as a rocking chair, and arcuate wear shoe means in the base of said main frame to protect said main frame from wear and to give a stronger rocking base to said chair.

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  • General Health & Medical Sciences (AREA)
  • Chairs For Special Purposes, Such As Reclining Chairs (AREA)

Description

Jan. 29, 1963 Filed Dec. 19, 1960 G. N. KITSOPOULOS MULTIPLE PURPOSE CHAIR 2 Sheets-Sheet 1 ATTORNEYS.
Jan. 29, 1963 a. N. KITSOPOULOS 3, 5,810
MULTIPLE PURPOSE CHAIR 2 Sheets-Sheet 2 Filed Dec. 19, 1960 .slIHUHU-I III II llililliili'a INVENTOR.
( /24? I 9 BY ATTORNEYS.
3,075,810 MULTIPLE PURPOSE CHAIR George N. Kitsopoulos, 9139 Commercial Ave, Chicago, Ill. Filed Dec. 19, 1960, Ser. No. 76,561 7 Claims. (Cl. 297270) This invention relates generally to new multi-purpose chair constructions and more particularly to improvements in a multipurpose chair of the type which is selectively adjustable to various uses and positions.
In my co-pending application entitled Multiple Purpose Chair, Serial No. 809,029, filed April 27, 1959, and now Patent No. 3,028,196, granted April 3, 1962, there is disclosed a novel chair construction which is selectively adjustable for use as a regular chair, a low profile relaxation or lounge chair, or a rocking chair. This versatility in my primarily disclosed multiple purpose chair is provided by a construction which comprises, in combination, a main frame, a seat of selectively adjustable height, a pair of selectively foldable support members which, in their horizontal position, serve to support a seat and which in their vertical position serve as arm rests, and pivotable leg means which may be adjusted with respect to the main frame to permit the chair to be used in a stationary position or to be used as a rocking chair.
It is a general object of this invention to provide a new multiple purpose chair construction which is an improvement over the multiple purpose chair disclosed in my copending application.
More particularly, it is an object of this invention to provide a new and improved multiple purpose chair having foldable arm support members of selectively adjustable height.
It is another object of this invention to provide adjustable height arm support members in a multipurpose chair, as above, formed with side pads adapted in one position thereof to support the chair seat and in another position thereof to support adjustable height arm rests in such a manner as to provide greater sitting area at the chair seat.
It is still another object of this invention to provide a multipurpose chair construction having a tubular main frame and selectively pivotable leg means wherein said main frame is formed with suitable recesses for receiving the pivotable leg means in vested fashion when the chair is used as a stationary chair.
It is a further object of this invention to provide a new and improved multipurpose chair, as above, having adjustable locking means cooperating with spring and pulley means for adjusting the position of the pivotable leg means whereby the rocking sweep of the chair may be selectively adjusted when the chair is used as a rocking chair.
It is a still further object of this invention to provide new and improved means in a multipurpose chair, as described above, for adjusting the position of the pivotal leg means with respect to the main frame whereby the pivotable leg means are moved outwardly from the main frame to increase the rocking sweep automatically in response to the weight of the person sitting on the chair, and further, comprising adjustable lock means cooperating with spring and pulley means to bring the pivotable leg means towards the main frame for a smaller rocking sweep or for nesting within the recesses of the main frame when the chair is to be used as a stationary chair.
It is a still further object of this invention to provide a multipurpose chair having a tubular main frame of lightweight metal construction wherein the lowermost portion of the main frame is provided with arcuate wooden shoe means to protect the main frame base from wear and to give a stronger rocking base on a lightweight tubular frame.
It is a still further object of this invention to provide a new and improved multiple purpose chair construction as described above, which is characterized by its extreme versatility, its durability and its highly pleasing appearance.
With these and other objects in view, the invention consists in the construction, arrangement and combination of the various parts of the novel multipurpose chair construction whereby the objects contemplated are attained as hereinafter set forth. The various features of the novelty which characterize this invention are pointed out with particularity in the claims annexed to and forming a part of this specification. For a better understanding of the invention, however, and its advantages, reference is had to the accompanying drawing and descriptive matter in which is illustrated and described a specific illustra-v tive embodiment of the invention.
In the drawing:
FIGURE 1 is a perspective view of one preferred illustrative embodiment of the invention in its low relaxation chair position and having the pivotable legs withdrawn to permit the chair to serve as a rocking chair;
FIGURE 2 is a perspective view of a preferred illus trative embodiment of this invention showing the chair with the seat in the regular chair position and having the pivotable leg means recessed to permit the chair to servev as a stationary chair;
FIGURE 3 is a rear elevational view of the chair as shown in FIGURE 2 of the drawing;
FIGURE 4 is a top plan view of the chair shown in FIGURES 2 and 3 of the drawing;
FIGURE 5 is a side elevational view of the invention, partly broken away and partly in cross-section for pur poses of illustration, showing the adjustable higher 'arm' rests, the pivotable leg means, and the arcuate shoe features of the invention, taken substantially as shown along line 55 of FIGURE 3; and
FIGURE 6 is a cross-sectional view illustrating the adjustable control means for the pivotable legs as taken substantially as shown along line 6-6 of FIGURE 3.
Referring now to the drawing, and more particularly to.
FIGURES l, 2 and 3 thereof, there is shown a specific illustrative embodiment of the invention which is an improvement over the multiple purpose chair shown in my copending application, S.N. 809,029. FIGURE 1 of the drawing illustrates the multiple purpose chair of the present invention with the seat in the low relaxation position and with the pivotable legs withdrawn from the chair main frame to permit the chair to serve as a rocking chair. The multiple purpose chair of the present invention, as illustrated in FIGURES 2 and 3 of the drawing, shows the invention with the seat in the regular chair position and with the pivotable legs recessed to permit the chair to serve as a stationary chair.
The illustrative embodiment of the present invention disclosed in FIGURE 1 of the drawing comprises a main frame having a pair of spaced-apart base members 12 and 14, respectively. Advantageously, each base member may be substantially U-shaped, as shown, with the base members 12' and 14 and which extends therebetween at the rear portion of the chair. In addition, the multiple purpose chair of the present invention advantageously is provided withsuitable supporting-cross bars on its mainframe, such as the rearcross bar 18 extending between the base members 12 and it. The chair further comprises a substantially horizontally positioned seat 20-which also is supported on" the main frame 10 between the base members 12 and 14. Advantageously, the base members Hand 14 may be provided with suitable side cross-bars to receive the seat 20, in the manner illustrated in my, co-pending application. At this point it is noted that there are many points of structural similarity between the multiple purpose chair as disclosed in my earlier co-pending application, and the improvement as disclosed herein. Since these points of structural similarity do'notvform a part of the present invention, they will not bev disclosed'in detail herein, but rather the presentimprovement invention will be disclosed in detail only with respect to the improvement featureswhich are not shown in-my earlier co pending application.
In accordance with an advantageous feature of the present invention, a pair of side pads 22and 24- are pivoted to the opposite sides of the seat 20 such that the side pads may be pivoted outwardly in horizontal. position as shown in FIGURE 1 of the drawing or,alterna tively, pivoted to a vertical position to support the seat 20 as shown in FIGURES 2 and 3 of the drawing.
When the side pads 22 and 24 are pivoted outwardly to a horizontal'position, as indicatedin FIGURE 1, it
, on the other side pad 24.
As described in greater detail hereinb'elow, it is a feature of this invention that the height of'the arm rests, 26 .and 32 may be adjusted in a desired manner' with respect to the seat 20 by the operation of suitable finger levers 34 which serve to release an .arm'restratchet-locking means provided within the support sleeves 28 and 30. comprising the present invention, the actuation of the finger. levers 34 serves to release the arm rests 1.26 and 3,2-so,that theirfvertical position may be adjusted, as desired, and the release of thefinger levers 34 looks the arm rest in place to provide maximum comfort-tow the user of the chair.
.When, however, the chair is to be used vwithv the seat. 20 in the regularchair. position, as illustrated in FI URES 2, 3 and4, rather thanin the low profile relaxa-.
tion position, as. illustrated in FIGURE 11, the side pads; 22. and 24 are pivoted into their generally vertical 'po-- sition with the result that the support sleeves 28 and 30 and the arm rests 26 and 32 are placed in a generally horizontal position; This is particularly illustrated, for example, in FIGURE 3 of the drawing. It can'there beseen' that when the side pads and the arm rests are In the use of the multiple purpose chair in the latter position, they serve to support the seat 20 in its raised, regular chair position. The seat 29 advantageously is made vertically adjustable in any suitable manner, such as that disclosed in the earlier co-pending application with the result that the seat 28 may be raised to the regular chair position and supported thereat by the side pads 22 and 24 together with the arm rests 26 and 32.
In accordance With a further feature of this invention, the main frame advantageously is generally tubular in construction and the base members 12 and 14 are provided with suitable recess portions, said recesses being shown as 34 and 36 respectively, capable of receiving the pivotable legs38 and 40 in a nested fashion.
As shown in FIGURES 1, 2 and 3 of the drawing, the pivotable leg 38 is pivoted to the base member 12, as at the pivot member 42, and the pivotable leg 40 is pivoted to the base member 14, as at the pivot member 44. Each pivotable leg is provided with a suitable roller or caster 46 at the lower extremity thereof and advantageously a horizontal crossbar 48 may be provided between recesses 34 and 36, respectively, of base members 12 and 14. In this position, the rollers or casters d6 are placed directly adjacent the base members with the result that rocking action of the chair is prevented and the chair serves as a stationary chair.
In accordance with a feature of this invention, a rotatable lock knob 59 is provided on the horizontal cross bar 18 of the main frame 10. Rotation of the lock knob" 50 serves to release the pivotable legs 38and 40 such that the weight of a person sitting on the chair causes the pivotable legs 38 and 40 to move outwardly from their nested position and away from the base members 12 and 14 of the chair. Advantageously, the sweep or degree of outward movement of such pivotable legs 38 and 40 may be governed by the amount of rotation of the lock knob 54], said rotation of lock knob 50 being transmitted to the pivotable legs by means of a unique arrangement within the horizontal cross bar 18 and by means of flexible connectors 52 and 54'associated with the pivotable legs 38 and 40 respectively.
When it is desired to change the multiple purpose chair from a rocking chairas shown in FIGURE 1 with the pivoted legs extendedto a regular stationary chairas shown in FIGURE 2 with the pivotable legs nested within the main framethe lock knob 55) is rotated in the opposite direction cause the flexible connectors 54 to pull the pivotable legs 38 and 40 closer to the base members 12 and 14 of the main frame. This inward movement of the pivotable legs 38 and 40 is governed by the amount of rotation of lock knob 56, and the total rotation of the lock knob causes the pivotable legs 38 and 40 to be fully nested within the recesses 3-:- and 36 of base members 12 and 1dof the main frame.
Turning now to FIGURES 5 and 6 of the drawing,
'there is illustrated in more specific detail, one preferred Thus, the arm rest 26, for example, is secured to a substantially U-shaped support member 56, the opposite arms of which are slidably disposed within the support sleeves 28 and 30, respectively. In accordance with a unique feature of this invention, the inner wall of the support sleeve 28 is provided with a plurality of ratchet teeth 58 and the inner wall of the support sleeve 30 is provided with a plurality of ratchet teeth 60. A portion of each arm of the U-shaped arm rest support member 56 is cut away, as at 62, to expose the ratchet teeth 58 and 60 to the interior of the support member arms. A ratchet 64 is pivotally mounted within one arm of the arm rest support member, as by means of the pivot 66, so as to engage the ratchet teeth 58 therewithin. Similarly, a ratchet 68 is pivotally mounted within the other arm of the arm rest support member 56, as by means of the pivot 70, so as to engage the ratchet teeth 60 therewithin.
In accordance with the operation of this invention, each of the ratchets 64 and 68 is connected by means of the flexible connecting member 72 to the arm rest finger lever 34 which is pivotally mounted within the arm rest support member 56 and which has a finger-engaging portion extending through an opening in the arm rest support member so as to be manually actuatable to raise or lower the arm rest, as desired. Thus, it can be seen that the two ratchets 64 and 68 are connected by means of the flexible connector 72 to a suitable point 74 on the finger lever 34, and when the finger lever is manually actuated about its pivot 76, the flexible connector 72 pivots each of the ratchets out of engagement with its associated ratchet teeth to permit the arm rest 26 to be selectively adjusted with respect to the seat 20.
Those skilled in the art will appreciate that in the particular illustrative embodiment disclosed in FIGURE of the drawing, the arm rest 26 may be pulled upwardly without actuation of the finger lever 34, due to the angular relationship between the ratchet teeth and the ratchet and that the arm rest will be locked into any position into which it is pulled. Conversely, when the arm rest 26 is to be lowered, it merely is necessary to actuate the finger lever 34 to release the ratchets 64 and 68, and the arm rest 26 may be lowered to any desired position. When this desired position is reached the finger lever 34 is released and the ratchets engage the ratchet teeth to lock the arm rest in place. It will be obvious to those skilled in the art that the ratchets 64 and 68 may be provided with suitable spring return means (herein not shown) and each ratchet may be supplied with a stop member to limit its rotation, such as the stop member 80 associated with ratchet 64 and the stop member 82 associated with the ratchet 68.
In accordance with a further feature of this invention, as particularly illustrated in FIGURES 5 and 6 of the drawing, the position of the pivotable legs 38 and 40 may selectively be adjusted with respect to the main tubular frame 12. This advantageous result is provided by one illustrative embodiment of the invention which comprises a rotatable lock knob 50 which is journaled within a housing collar 84 secured to the back of the rear cross bar 18. Preferably, the shaft 86 of the lock knob 50 is provided with an internal thread adapted to be operatively associated with a threaded stem 88 such that rotation of the lock knob 50 causes the threaded stem 88 to be moved into or out of the rear cross bar 18 in a manner determined by the direction of rotation of the lock knob.
A pair of lock arms 90 and 92 are pivotally secured at one end thereof to the threaded stem 88, as by means of the pivot member 94. Each lock arm is arcuate in shape such that the linear movement of the threaded stem 88 in response to the rotation of lock knob 50 causes the lock arms 90 and 92 to be pivotally rotated in opposite directions about the pivot member 94. This operation is facilitated by means of a pair of coil springs connected between the lock arms and the pivot member 94. Thus, as shown in FIGURE 6 of the drawing, a coil spring 96 is secured between the lock arm 90 and a point 98 on the stop member 100 around the pivot 6. member 94. Similarly, a coil spring 102 is connected between the lock arm 92 and the point 98.
The operation of this feature of the invention can now be understood by those skilled in the art. The normal compressive forces of the coil springs 96 and 102 urge the lock arms and 92 from their outermost position, as shown in solid lines in FIGURE 6, to their innermost position, as shown in broken lines in FIGURE 6. When the lock knob 50 is rotated to move the threaded stem 88 further into the cross bar 18, the lock arms 90 and 92 are pivoted outwardly to their limiting point against the backing plate 104 secured to the interior wall of the cross bar 18. When the lock knob 50 is rotated in the opposite direction, the lock arms 90 and 92 are pivoted inwardly to their limiting position as shown in broken line form in FIGURE 6.
In accordance with a feature of the invention, the movement of the lock arms 90 and 92 may be used to control the rocking sweep of the pivotable legs 38 and 40. To this end a flexible connector 54 is secured to the outer end of the lock arm 90, as by means of the loop 106 about the pin 108. This flexible connector 54 is threaded past the rotatable track pulley 110 within the rear cross bar 18, and the rotatable track pulley 112 within the back rest 16 of the main frame, to the roller bearing 114 and the track pulley 116 within the pivotable leg 38, where it terminates in the loop 118 secured to the pin 120 within the pivotable leg. In a similar fashion, the flexible connector 122 is secured to the lock arm 92 as by means of the loop 124 and the pin 128, and this flexible connector is threaded past the track pulley within cross bar 18, and track pulley 132 within back rest 16, to a roller bearing and further track pulley within the pivotable leg 40 where it is secured thereto.
In the operation of the invention, when an adjustment of the rocking sweep of the pivotable legs is desired, it will be appreciated that the rotation of lock knob 50 to pivot the lock arms 90 and 92, in the manner described heretofore, serves to permit the pivotable legs 38 and 40 to be moved outwardly away from the main frame or inwardly closer to the main frame, as desired. Manifestly, when the lock knob 50 is rotated to permit greater rocking sweep, the outward movement of the pivotable legs is facilitated by the weight of the person sitting on the chair.
Thus, the downward pressure on seat 20 due to the weight of the user causes the pivotable legs 38 and 40 to roll outwardly away from the main frame to the limiting position determined by the amount of rotation given lock knob 50. This is illustrated in broken line form in FIGURE 5 of the drawing. Conversely, rotation of the lock knob 50 in the other direction causes the pivotable legs to be drawn inwardly to the limiting position as shown in solid line form in FIGURE 5 wherein the pivotable legs are nested within the recesses of the base members 12 and 14 of the chair.
In accordance with a still further feature of this inven tion, the lowermost portions of the main frame, i.e., the bottoms of the base members 12 and 14, are provided with strengthening means such that the main frame may be made with a tubular lightweight metal construction and still provide a strong rocking base when the chair is used as a rocking chair. To this end, each base member 12 and 1 4 advantageously is provided with an arcuate shoe 136, preferably formed of some material such as wood, plastic or the like. In the construction of the invention, each arcuate shoe 136 is fitted within the recess formed by the tubular frame and is secured thereto by any suitable means, such as the fasteners 138. It can be seen that the arcuate shoe 136 is slightly greater in the vertical dimension than the base members 12 or 14 so as to insure contact between the arcuate shoe and the surface upon which the chair rests. Thus, it can be seen that the tubular main frame may be of a lightweight metal construction since the arcuate shoe means serves to protect the main frame base from wear and gives a stronger rocking base' with constructions other than the particular illustrative embodiments described herein, and that various changes and-modifications maybe made without departing from the-principles ofthe invention- Therefore, it is intended to cover in theappended claims any changes and modificadons-which fall within the true'spirit and scope of this invention.
What is claimed asthe invention is:
1. A multiple purpose chair having a plurality of selectively adustable positions comprising a tubular main frame, a seat adapted to be supported at a selectively adjustable height on said main frame, means associated with said seat for enabling the seat to be raised and lowered with respect to saidframe, said means comprising a support member pivotally secured to each side of said main frame, said support members being adapted to be folded in horizontal position for supporting the seat when the chair is serving as a regular chair and being further adapted to be unfolded into a vertical position for permitting the seat to be lowered therebetween when the chair is serving as a low profile relaxation chair, an arm rest on each support member, manually actuatable means for enabling each arm rest to be raised or lowered with respect to its support member, adjustable leg means pivotally secured to the rear of said main frame, said main frame defining recesses for receiving said adjustable leg means in nested fashion when the chair is serving as a stationary chair, adjustable lock means for releasing said adjustable leg means to permit the latter to bemoved outwardly away from the main frame when the chair is serving as a rocking chair, actuating means operatively associated with said adjustable lock means and said adjustable leg means to cause the latter to be moved inwardly towards the main frame a desired amount for adjusting the rocking sweep of said chair, and for nesting said leg means within the main frame recesses to enable the chair to serve as a stationary chair, and arcuate wear shoe means in the base of said main frame to protect said main frame from wear and to give a stronger rocking base to said chair.
2. A multiple'purpose chair having a plurality of selectively adjustable positions comprising a tubular main frame, a seat adapted to be supported at a selectively adjustable height on said main frame, means associated with said seat for enabling the seat to be raised and lowered with respect to said frame, said means comprising a support member pivotally secured to each side of said main frame, said support members being adapted to be folded in horizontal position for supporting the seat when the chair is serving as a regular chair and being further adapted to be unfolded into a vertical position for permitting the seat to be lowered therebetween when the chair is serving as a low profile relaxation chair, adjustable'leg means pivotally secured to the rear of said main frame, said main frame defining recesses for receiving said adjustable leg means in nested fashion when the chair is serving as a stationary chair, adjustable lock means for releasing said adjustable leg means to permit the latter to be moved outwardly away from the main frame when the chair is serving as a rocking chair and, actuating means operatively associated with said adjustable lock means and said adjustable leg means to cause the latter to be moved inwardly towards the main frame a desired amount for adjusting the rocking sweep of'said chair, and for nesting said leg means within the main frame recesses to enable the chair to serve as a stationary chair.
3. A multiple purpose chair having a plurality of selectively adjustable positions comprising a tubular main frame,.a seat adapted to be supported at a selectively 8 adjustable height on said main frame, means associatedwith said seat for enabling the'seat to be raised and lowered with respect to said frame, said means comprisinga support member pivotally secured to each side' ofsaid mainframe, said support members being adapted to be folded in horizontal position for supporting the seat when the chair is serving as aregular chair and beingfurther adapted to be unfolded into a vertical position for permitting the seat to be lowered thcrebetween when the chair is serving' as-a low profile relaxation chair, adustable leg.
means pivotally secured to the rear of said main frame,
adjustable lock means for releasing said adjustable leg.
means to permit the latter to be moved outwardly away from the main frame when the chair is serving as a rock ing chair, and actuating means operatively associated with said adjustable lock means and said adjustable leg means to cause the latter to be moved inwardly towards the main frame a desired amount for adjusting the rocking sweep of said chair, and for placing said leg means in juxtaposition with said main frame to enable said chair to serve as a stationary chair.
4. A multiple purpose chair having a plurality of selectively adjustable positions comprising a tubular main frame, a seat adapted to be supported at a selectively: adjustable height on said main frame, means associated with said seat for enabling the seat to be raised and lowered with respect to said frame, adjustable leg means pivotally secured to the rear of said main frame, said main frame defining recesses for receiving said adjustable leg means in nested fashion when the chair is serving as a stationary chair, manually adjustable lock meansfor releasing said adjustable leg means to permit the latter to be moved outwardly away from the main frame when the chair is serving as a rocking chair, and actuating means operatively associated with said adjustable lock means and said adjustable leg means to cause the latter to be moved inwardly towards the main frame a desired amount for adjusting the rocking sweep of said chair, and for nesting said leg means within said mainframe recesses toenable said chair to serve as a stationary chair.
5. A multiple purpose chair having a plurality of selectively adjustable positions comprising a main frame, a seat adapted to be supported at a selectively adjustable height on said main frame, means associated with said seat for enabling'the seat to be raised and lowered with respect-to said frame, said means comprising a support pad pivotally secured to each side of said main frame; each support pad being adapted to be folded into a first position for supporting the seat when the chair is serving as a regular chair and being further adapted to be unfolded into a second position for permitting the seat to be lowered therebetween to provide additional sitting area when the chair is serving as a low profile relaxation chair, an arm rest support on each support pad, said arm rests'being hidden when the support pads are folded into said first position to thereby provide the chair with an attractive appearance, manually actuatable means for enabling each arm rest to be raised or lowered with respect to its support pad, and adjustable leg means pivotally secured to the rear of said main frame for adjusting the rocking sweep of said chair when the'latter is serving as a rocking chair or for enabling the chair to be' used as a stationary chair.
6. A multiple purpose chair having a plurality of selectively adjustable positions comprising a main frame, a seat adapted to be supported at a selectively adjustable height on said main frame, means associated with said seat for enabling the seat to be raised and lowered with respect to said frame, adjusable leg means pivotally secured to the rear of said main frame, said main frame defining recesses for receiving said adjustable leg means in nested fashion when the chair is serving as a stationary chair and, adjustable lock means for releasing said adjustable leg means to permit the latter to be moved-out- 9 wardly away from the main frame when the chair is serving as a rocking chair.
7. A multiple purpose chair having a plurality of selectively adjustable positions comprising a main frame, a seat adapted to be supported at a selectively adjustable height on said main frame, means associated with said seat for enabling the seat to be raised or lowered with respect to said frame, adjustable leg means pivotally secured to the rear of said main frame to permit the chair to serve as a stationary chair or as a rocking chair, and arcuate wear shoe means in the base of said main frame to protect said main frame from wear and to give a stronger rocking base to said chair.
References Cited in the file of this patent UNITED STATES PATENTS White July 29, 1879 Newell Nov. 16, 1886 Holt Sept. 21, 1897 Collignon Feb. 19, 1901 Ramsay Dec. 8, 1903 Rick Jan. 21, 1919 Wagner Apr. 19, 1921 Kurnick June 27, 1922 Booth Feb. 13, 1951 Sprung Apr. 15, 1952 Moreland Dec. 25, 1956 Lavter-bach July 22, 1958

Claims (1)

  1. 7. A MULTIPLE PURPOSE CHAIR HAVING A PLURALITY OF SELECTIVELY ADJUSTABLE POSITIONS COMPRISING A MAIN FRAME, A SEAT ADAPTED TO BE SUPPORTED AT A SELECTIVELY ADJUSTABLE HEIGHT ON SAID MAIN FRAME, MEANS ASSOCIATED WITH SAID SEAT FOR ENABLING THE SEAT TO BE RAISED OR LOWERED WITH RESPECT TO SAID FRAME, ADJUSTABLE LEG MEANS PIVOTALLY SECURED TO THE REAR OF SAID MAIN FRAME TO PERMIT THE CHAIR TO SERVE AS A STATIONARY CHAIR OR AS A ROCKING CHAIR, AND ARCUATE WEAR SHOE MEANS IN THE BASE OF SAID MAIN FRAME
US76561A 1960-12-19 1960-12-19 Multiple purpose chair Expired - Lifetime US3075810A (en)

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Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3163464A (en) * 1963-08-19 1964-12-29 Dual Mfg & Eng Mechanism for recliner-rocker type of chair
US3322480A (en) * 1966-04-25 1967-05-30 Gen Electric Anti-tip device
US3415531A (en) * 1966-09-09 1968-12-10 Louise A. Kiel Rocking wheel chair
US4123102A (en) * 1977-07-22 1978-10-31 Alexander C. Daswick Adjustable reclining chair having three-point suspension, and method
EP0090905A1 (en) * 1982-04-03 1983-10-12 Christof Stoll GmbH & Co KG Armrest for sitting furniture
US4699425A (en) * 1984-02-20 1987-10-13 Ao Medical Products Ab Chair for use when taking X-ray pictures
US20110148161A1 (en) * 2009-12-18 2011-06-23 Fontaine Eric Locking system for rocking chair
FR3070007A1 (en) * 2017-08-08 2019-02-15 Vincent Fillon ARMCHAIR

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US217918A (en) * 1879-07-29 Improvement in exercising-chai rs
US352773A (en) * 1886-11-16 Reclining-chair
US590396A (en) * 1897-09-21 Rocking-chair
US668489A (en) * 1900-04-12 1901-02-19 Adam Collignon Folding chair.
US746154A (en) * 1903-04-22 1903-12-08 Thomas M Ramsay Adjustable driver's seat.
US1292061A (en) * 1917-04-25 1919-01-21 Chester Rick Convertible chair.
US1375337A (en) * 1920-01-19 1921-04-19 Wagner Rudolph Chair
US1421260A (en) * 1920-12-17 1922-06-27 Peter E Kurnick Couch armchair
US2541955A (en) * 1945-03-28 1951-02-13 Dwight W Booth Rolling rocking chair
US2592702A (en) * 1949-08-29 1952-04-15 Sprung Douglas Lowry Armrest
US2775285A (en) * 1953-07-10 1956-12-25 Clifford D Moreland Convertible chair
US2844193A (en) * 1952-05-07 1958-07-22 Ritter Co Inc Arm rest

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US217918A (en) * 1879-07-29 Improvement in exercising-chai rs
US352773A (en) * 1886-11-16 Reclining-chair
US590396A (en) * 1897-09-21 Rocking-chair
US668489A (en) * 1900-04-12 1901-02-19 Adam Collignon Folding chair.
US746154A (en) * 1903-04-22 1903-12-08 Thomas M Ramsay Adjustable driver's seat.
US1292061A (en) * 1917-04-25 1919-01-21 Chester Rick Convertible chair.
US1375337A (en) * 1920-01-19 1921-04-19 Wagner Rudolph Chair
US1421260A (en) * 1920-12-17 1922-06-27 Peter E Kurnick Couch armchair
US2541955A (en) * 1945-03-28 1951-02-13 Dwight W Booth Rolling rocking chair
US2592702A (en) * 1949-08-29 1952-04-15 Sprung Douglas Lowry Armrest
US2844193A (en) * 1952-05-07 1958-07-22 Ritter Co Inc Arm rest
US2775285A (en) * 1953-07-10 1956-12-25 Clifford D Moreland Convertible chair

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3163464A (en) * 1963-08-19 1964-12-29 Dual Mfg & Eng Mechanism for recliner-rocker type of chair
US3322480A (en) * 1966-04-25 1967-05-30 Gen Electric Anti-tip device
US3415531A (en) * 1966-09-09 1968-12-10 Louise A. Kiel Rocking wheel chair
US4123102A (en) * 1977-07-22 1978-10-31 Alexander C. Daswick Adjustable reclining chair having three-point suspension, and method
EP0090905A1 (en) * 1982-04-03 1983-10-12 Christof Stoll GmbH & Co KG Armrest for sitting furniture
US4699425A (en) * 1984-02-20 1987-10-13 Ao Medical Products Ab Chair for use when taking X-ray pictures
US20110148161A1 (en) * 2009-12-18 2011-06-23 Fontaine Eric Locking system for rocking chair
FR3070007A1 (en) * 2017-08-08 2019-02-15 Vincent Fillon ARMCHAIR

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