US481582A - Chair - Google Patents
Chair Download PDFInfo
- Publication number
- US481582A US481582A US481582DA US481582A US 481582 A US481582 A US 481582A US 481582D A US481582D A US 481582DA US 481582 A US481582 A US 481582A
- Authority
- US
- United States
- Prior art keywords
- chair
- springs
- base
- seat
- spring
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
Links
- 238000010276 construction Methods 0.000 description 6
- 210000003414 Extremities Anatomy 0.000 description 2
- 229910000639 Spring steel Inorganic materials 0.000 description 2
- 230000005484 gravity Effects 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 230000000630 rising Effects 0.000 description 2
Images
Classifications
-
- A—HUMAN NECESSITIES
- A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
- A47C—CHAIRS; SOFAS; BEDS
- A47C3/00—Chairs characterised by structural features; Chairs or stools with rotatable or vertically-adjustable seats
- A47C3/02—Rocking chairs
- A47C3/021—Rocking chairs having elastic frames
Definitions
- My invention relates to certain improvements in oscillating or tilting chairs having a stationary base and movable seat connected by springs; and its object is to provide a chair of this character with springs which will permit a long horizontal tilting movement with the least possible sinking or vertical movement.
- Figure 1 is a side elevation of a chair provided with my improved springs, the dotted lines showing a secondary position thereof.
- Fig. 2 is a front elevation of the same.
- Fig. 3 is a side View of the spring separated from the chair, and
- Fig. t is a perspective view of the spring in another position.
- a A is the top or moving part of the chair, including the seat, back, and arms, and B is the base.
- These parts may be of any desired forn1that is to say, in the form of any office-chair, parlor-rocker, sewing-chair, or any of the types or forms wherein a stationary base and a movable seat are employed.
- O 0 represent the springs, which are flat straps of spring-steel or other good resilient material.
- These springs as shown, are substantially S shape in form, having their upper portions flattened and attached to the chair-seat and their lower portions bent to a plane parallel to but inside of the upper portions and continued in an oblique direction to cross said upper portion, and the extremity is then attached to the base of the chair.
- this construction a hanging loop is formed, Whose width is at all points less than the height thereof, and this construction allows a long' backward and forward tilting movement without contact between the upper and lower portions of the spring by reason of the members being crossed to lie in parallel planes and also by the shape of the loop.
- This construction while permitting this long easy tilting movement, secures suflicient rigidity in the vertical line of the loop to prevent any rising or sinking movement in the vertical plane of the loop.
- These springs therefore constitute the sole and only connection between the base and the seat of the chair, and their form is such that there is no contact between their parts, and consequently no disagreeable noises produced in the use of the chair.
- the spring is formed upon such curves that an even strain is exercised on all parts, and it isso close to the chair that the center of gravity is in a plane passing through the bottom of the loops or curves.
- the combination in an oscillating or tilting chair or like article of furniture, the combination, with a base and movable seat, of a pair of springs connecting the base and seat, said springs being substantially S shape in form and having their upper portions flattened and attached to the seat, and their lower portions bent to a plane parallel to but inside of the upper portion and attached to the base, whereby is provided a hanging loop, whose width is less than the height thereof, substantially as and for the purpose described.
Landscapes
- Chairs Characterized By Structure (AREA)
Description
" (No Model.)
J. W. ,MODONOUGH.
CHAIR.
No. 481,582. Patented Aug. 30, 1892.
b 1 mi @.fi
UNITED STATES PATENT OFFICE.
JAMES W. MCDONOUGH, OF NEW YORK, N. Y., ASSIGNOR TO BLAGKMER BROS. & 00., OF CHICAGO, ILLINOIS.
CHAIR.
SPECIFICATION forming part of Letters Patent No. 481,582, dated August 30,1892.
Application filed August 5, 1889.
To all whom it may concern.-
Be it known thatI, JAMES W. MoDoNoUGH, a citizen of the United States, residing at New York, N. Y., have invented certain new and useful Improvements in Chairs, of which the following is a specification.
My invention relates to certain improvements in oscillating or tilting chairs having a stationary base and movable seat connected by springs; and its object is to provide a chair of this character with springs which will permit a long horizontal tilting movement with the least possible sinking or vertical movement.
In the accompanying drawings, Figure 1 is a side elevation of a chair provided with my improved springs, the dotted lines showing a secondary position thereof. Fig. 2 is a front elevation of the same. Fig. 3 is a side View of the spring separated from the chair, and Fig. t is a perspective view of the spring in another position.
In the drawings, A A is the top or moving part of the chair, including the seat, back, and arms, and B is the base. These parts may be of any desired forn1that is to say, in the form of any office-chair, parlor-rocker, sewing-chair, or any of the types or forms wherein a stationary base and a movable seat are employed.
O 0 represent the springs, which are flat straps of spring-steel or other good resilient material. These springs, as shown, are substantially S shape in form, having their upper portions flattened and attached to the chair-seat and their lower portions bent to a plane parallel to but inside of the upper portions and continued in an oblique direction to cross said upper portion, and the extremity is then attached to the base of the chair. By
Serial No. 319,851. (No model.)
this construction a hanging loop is formed, Whose width is at all points less than the height thereof, and this construction allows a long' backward and forward tilting movement without contact between the upper and lower portions of the spring by reason of the members being crossed to lie in parallel planes and also by the shape of the loop. This construction, while permitting this long easy tilting movement, secures suflicient rigidity in the vertical line of the loop to prevent any rising or sinking movement in the vertical plane of the loop. These springs therefore constitute the sole and only connection between the base and the seat of the chair, and their form is such that there is no contact between their parts, and consequently no disagreeable noises produced in the use of the chair. The spring is formed upon such curves that an even strain is exercised on all parts, and it isso close to the chair that the center of gravity is in a plane passing through the bottom of the loops or curves.
In an oscillating or tilting chair or like article of furniture, the combination, with a base and movable seat, of a pair of springs connecting the base and seat, said springs being substantially S shape in form and having their upper portions flattened and attached to the seat, and their lower portions bent to a plane parallel to but inside of the upper portion and attached to the base, whereby is provided a hanging loop, whose width is less than the height thereof, substantially as and for the purpose described.
JAMES W. MODONOUGH.
Witnesses:
FRANK L. EASTMAN, WM. '0. MAGILL.
Publications (1)
Publication Number | Publication Date |
---|---|
US481582A true US481582A (en) | 1892-08-30 |
Family
ID=2550434
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US481582D Expired - Lifetime US481582A (en) | Chair |
Country Status (1)
Country | Link |
---|---|
US (1) | US481582A (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2537071A (en) * | 1945-07-30 | 1951-01-09 | Charles F Lukins | Chair having spring supported seat and back |
US2586951A (en) * | 1945-08-23 | 1952-02-26 | Dorothy K S Johnson | Spring supported chair |
-
0
- US US481582D patent/US481582A/en not_active Expired - Lifetime
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2537071A (en) * | 1945-07-30 | 1951-01-09 | Charles F Lukins | Chair having spring supported seat and back |
US2586951A (en) * | 1945-08-23 | 1952-02-26 | Dorothy K S Johnson | Spring supported chair |
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