US2992845A - Friction device - Google Patents

Friction device Download PDF

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US2992845A
US2992845A US716382A US71638258A US2992845A US 2992845 A US2992845 A US 2992845A US 716382 A US716382 A US 716382A US 71638258 A US71638258 A US 71638258A US 2992845 A US2992845 A US 2992845A
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spring
wire
bore
members
separable
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US716382A
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Robert L Blanchard
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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16B—DEVICES FOR FASTENING OR SECURING CONSTRUCTIONAL ELEMENTS OR MACHINE PARTS TOGETHER, e.g. NAILS, BOLTS, CIRCLIPS, CLAMPS, CLIPS OR WEDGES; JOINTS OR JOINTING
    • F16B7/00—Connections of rods or tubes, e.g. of non-circular section, mutually, including resilient connections
    • F16B7/04—Clamping or clipping connections
    • F16B7/0406—Clamping or clipping connections for rods or tubes being coaxial
    • F16B7/0413—Clamping or clipping connections for rods or tubes being coaxial for tubes using the innerside thereof
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04H—BUILDINGS OR LIKE STRUCTURES FOR PARTICULAR PURPOSES; SWIMMING OR SPLASH BATHS OR POOLS; MASTS; FENCING; TENTS OR CANOPIES, IN GENERAL
    • E04H15/00—Tents or canopies, in general
    • E04H15/32—Parts, components, construction details, accessories, interior equipment, specially adapted for tents, e.g. guy-line equipment, skirts, thresholds
    • E04H15/60—Poles
    • Y—GENERAL 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
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T403/00—Joints and connections
    • Y10T403/70—Interfitted members
    • Y10T403/7075—Interfitted members including discrete retainer
    • Y10T403/7077—Interfitted members including discrete retainer for telescoping members

Definitions

  • the invention is illustrated in connection with telescoping tubular members such as are advantageously employed in collapsible tent constructions and the like.
  • telescoping tubular members such as are advantageously employed in collapsible tent constructions and the like.
  • the invention is not to be limited to tent or similar structures but instead has utility generally in the field of separable connections or joints.
  • An object of the invention is to provide a novel and improved separable joint device which is especially simple in its construction, involving essentially but a single novel functional member other than the interfitting or telescoping parts.
  • Another object of the invention is to provide an improved connector or joint device as above set forth, which is especially adapted or suited to a construction wherein one of the separable parts has a telescoping portion of reduced diameter, forming in said part an internal, annular shoulder.
  • a further object of the invention is to provide an improved separable joint device of the above type, wherein a simple folded wire piece may constitute the functional member which effects retention of one part on the other.
  • the folded wire part may constitute not only a frictional detent but also a keying means to prevent relative turning movement of the telescoping parts.
  • Another feature of the invention resides in the provision of an improved separable joint device having a folded wire detent piece as above set forth, wherein simple means are provided in conjunction with said piece, for tying the separable parts to each other against complete separation when the parts are uncoupled.
  • a still further object of the invention is to provide an improved separable connector or coupling device in accordance with the foregoing, which is extremely simple in its construction, involving few inexpensive parts easily and quickly assembled, and which is nevertheless reliable in its action at all times.
  • FIGURE 1 is an axial sectional view of a separable joint device made in accordance with the invention, the separable parts being shown as coupled to each other.
  • FIG. 2 is an axial sectional view of a separable joint device illustrating another form of the invention, the separable parts being shown as uncoupled from each other but held together against complete separation.
  • FIG. 3 is an axial sectional view of a separable joint device showing a modification of the invention wherein the separable parts are prevented from relative turning when coupled to each other.
  • FIG. 4 is an end elevational view of one of the parts of the separable joint of FIG. 3.
  • FIG. 1 there is shown a separable tubular-joint friction device comprising a pair of telescoping members and 11, the member 10 being in the form of a tube having an elongate bore 12 adapted to receive a portion 13 (of the member ⁇ 11) which is swaged or otherwise formed to have a reduced diameter.
  • the member 11 By virtue of the forming of the member 11 it will have a portion 14 characterized by a relatively large bore 15, said portion 14 being normally disposed outside of the member 10.
  • the smaller-diameter portion 13 of the member 11 is receivable in the bore 12 of the member 10, and has a bore 16 which is smaller than the bore 15, as may be readily seen.
  • a shoulder portion 118 exists between the portions 13 and 14, presenting both an exterior annular shoulder and an internal annular shoulder.
  • I provide a simple and novel spring part 20, adapted to be carried in the member 11 and to occupy the bores 15 and 16 thereof, said spring part being advantageously formed of a bent or folded wire and being constituted to act as a spring detent.
  • the part 20 may have a yoke or connector portion 21 constituted of a yoke proper 22 and legs 23, and may have extensions 24 of such legs, disposed mainly in the smaller bore 16.
  • the wire part 20 has bends 25 which are adapted to engage the internal shoulder of the shoulder portion 18, comprising cooperable friction detent means to position the wire part 20 in the member 11.
  • One end 27 of the wire part is formed as a loop disposed in a diametric plane, said loop projecting laterally and axially from the extremity of the member 11, whereas the other end 28 is bent at an angle to constitute a hook and is adapted to engage the edge of the said extremity.
  • the angular end 28 of the wire part 20 in conjunction with the bends 25 provide for positioning and retention of the wire part in the member 11..
  • the loop end 27 is adapted to engage the inside of the member 10 under appreciable pressure, thereby to frictionally retain the members 10 and 11 in the assembled positions shown.
  • the wire part 20 may be constituted of relatively heavy and stiff wire, as for example No. 12 or 11, whereby an appreciable force may be exerted against the inside of the member 10 to effect the said friction retention.
  • the rounded portion of the loop 27 may constitute in efiect a sloping nose, engageable with the edge or extremity of the member 10 when the two members are being brought together.
  • an advantageous camming action results, which enables the members to be interfitted even though the spring pressure of the wire part 20 is quite considerable.
  • My improved friction device comprises essentially the single wire part 20, which is simple and inexpensive to fabricate, and which may be easily and quickly inserted in or assembled to the member ll by use of a suitable tool.
  • the bends 25 and the bent end 28 will effectively retain the wire part 20 in the member 11, once it has been assembled therein.
  • a friction joint device as above set forth may be advantageously incorporated in collapsible tent constructions, as well as in other equipment requiring a quick assembly and disconnect device.
  • FIG. 2 Another embodiment of the invention is illustrated in FIG. 2, wherein the members 10a and 11a when pulled apart are still prevented from complete separation.
  • the spring part 20a is similar to the part 20 described above except that the end portion 28a thereof is shorter, and extends into a side opening 32 in the wall of the member 11a. This blocks the wire part 20a in place in a positive manner.
  • I additionally provide a cord, chain, wire or linkage 34 one end of which is secured to the loop 27a of the wire part 2011 and the other end of which passes through an opening 35 in the wall of, the member a whereby the members are permanentlyv tied to each other even when uncoupled.
  • the cord 34 may be of nylon or other suitable material, as will be readily understood.
  • FIGS. 3 and 4 Another embodiment of the invention is illustrated in FIGS. 3 and 4, wherein a wire part 201) has an angular end portion 28b which not only passes through but projects radially from the side of the reduced portion 13a of the member 11a.
  • a mem ber 10b having an elongate bore 12b provided with a longitudinal groove or keyway 38.
  • the groove 38 is adapted to receive the projecting end portion 28b of the wire part 2011 when the members 10b and 11a are coupled together, and thus the said members are prevented from having relative turning movement.
  • the loop 27b of the wire part 2% exerts force on the wall of the bore 12b to eifect a frictional detent, as with the previously described forms of the invention.
  • a separable joint device comprising a pair of telescoping members, one member having an elongate, deep bore and the other member having an elongate hollow part a portion of which is receivable in said bore and another portion of which remains outside of said bore and has a.
  • the said part having an internal shoulder between the said longer and smaller bores and having an external shoulder adjacent the location of the internal shoulder and engageable with the.
  • said hollow part and wire spring having cooperable friction detent means normally yieldably retaining the spring in said part and enabling separation of the spring from the part in response to a sufficient pull being exerted on the spring, said'cooperable detent means comprising the said shoulder of the spring and internal shoulder of the hollow part, said shoulder of the spring engaging the said internal shoulder in the bore of the hollow part, thereby to retain the spring therein, and said spring further having one end portion projecting from the end of said 4 hollow part and offset laterally whereby it is adapted to frictionally engage and seize a wall of the bore of the one member to frictionally retain the members together.

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  • Engineering & Computer Science (AREA)
  • Architecture (AREA)
  • General Engineering & Computer Science (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Flexible Shafts (AREA)

Description

y 1961 R. 1.. BLANCHARD 2,992,845
FRICTION DEVICE Filed Feb. 20, 1958 INVENTOR. Kofiert L. Blane/Zara Mun/2,1113% Daniels MdFC/Z flT'Tof/VEYS United rates Patent 2,992,845 FRICTION DEVICE Robert L. Blanchard, 168 W. 58th St., New York-19, N.Y. Filed Feb. 20, 1958, Ser. No. 716,382 8 Claims. (Cl. 287-58) This invention relates to devices constituting separable joints or connectors, and more particularly to connector or joint devices of the type wherein one part telescopes with another.
The invention is illustrated in connection with telescoping tubular members such as are advantageously employed in collapsible tent constructions and the like. However, it will be understood that the invention is not to be limited to tent or similar structures but instead has utility generally in the field of separable connections or joints.
An object of the invention is to provide a novel and improved separable joint device which is especially simple in its construction, involving essentially but a single novel functional member other than the interfitting or telescoping parts.
Another object of the invention is to provide an improved connector or joint device as above set forth, which is especially adapted or suited to a construction wherein one of the separable parts has a telescoping portion of reduced diameter, forming in said part an internal, annular shoulder.
A further object of the invention is to provide an improved separable joint device of the above type, wherein a simple folded wire piece may constitute the functional member which effects retention of one part on the other.
-A feature of the invention resides in the provision of an improved separable joint device as the above characterized, wherein the folded wire part may constitute not only a frictional detent but also a keying means to prevent relative turning movement of the telescoping parts.
Another feature of the invention resides in the provision of an improved separable joint device having a folded wire detent piece as above set forth, wherein simple means are provided in conjunction with said piece, for tying the separable parts to each other against complete separation when the parts are uncoupled.
A still further object of the invention is to provide an improved separable connector or coupling device in accordance with the foregoing, which is extremely simple in its construction, involving few inexpensive parts easily and quickly assembled, and which is nevertheless reliable in its action at all times.
Other features and advantages will hereinafter appear.
In the drawings accompanying this specification, similar characters of reference indicate corresponding parts wherever possible in the several views, in which:
FIGURE 1 is an axial sectional view of a separable joint device made in accordance with the invention, the separable parts being shown as coupled to each other.
FIG. 2 is an axial sectional view of a separable joint device illustrating another form of the invention, the separable parts being shown as uncoupled from each other but held together against complete separation.
FIG. 3 is an axial sectional view of a separable joint device showing a modification of the invention wherein the separable parts are prevented from relative turning when coupled to each other.
FIG. 4 is an end elevational view of one of the parts of the separable joint of FIG. 3.
Referring first to FIG. 1 there is shown a separable tubular-joint friction device comprising a pair of telescoping members and 11, the member 10 being in the form of a tube having an elongate bore 12 adapted to receive a portion 13 (of the member \11) which is swaged or otherwise formed to have a reduced diameter.
By virtue of the forming of the member 11 it will have a portion 14 characterized by a relatively large bore 15, said portion 14 being normally disposed outside of the member 10. The smaller-diameter portion 13 of the member 11 is receivable in the bore 12 of the member 10, and has a bore 16 which is smaller than the bore 15, as may be readily seen. With this construction, a shoulder portion 118 exists between the portions 13 and 14, presenting both an exterior annular shoulder and an internal annular shoulder.
In accordance with the present invention I provide a simple and novel spring part 20, adapted to be carried in the member 11 and to occupy the bores 15 and 16 thereof, said spring part being advantageously formed of a bent or folded wire and being constituted to act as a spring detent. The part 20 may have a yoke or connector portion 21 constituted of a yoke proper 22 and legs 23, and may have extensions 24 of such legs, disposed mainly in the smaller bore 16. The wire part 20 has bends 25 which are adapted to engage the internal shoulder of the shoulder portion 18, comprising cooperable friction detent means to position the wire part 20 in the member 11.
One end 27 of the wire part is formed as a loop disposed in a diametric plane, said loop projecting laterally and axially from the extremity of the member 11, whereas the other end 28 is bent at an angle to constitute a hook and is adapted to engage the edge of the said extremity. The angular end 28 of the wire part 20 in conjunction with the bends 25 provide for positioning and retention of the wire part in the member 11.. The loop end 27 is adapted to engage the inside of the member 10 under appreciable pressure, thereby to frictionally retain the members 10 and 11 in the assembled positions shown.
The wire part 20 may be constituted of relatively heavy and stiff wire, as for example No. 12 or 11, whereby an appreciable force may be exerted against the inside of the member 10 to effect the said friction retention.
It will be observed that the rounded portion of the loop 27 may constitute in efiect a sloping nose, engageable with the edge or extremity of the member 10 when the two members are being brought together. In consequence, an advantageous camming action results, which enables the members to be interfitted even though the spring pressure of the wire part 20 is quite considerable.
It will now be understood from the foregoing that I have provide an extremely simple, novel frictional joint device whereby two telescoping members may be readily coupled together and held in coupled relation. My improved friction device comprises essentially the single wire part 20, which is simple and inexpensive to fabricate, and which may be easily and quickly inserted in or assembled to the member ll by use of a suitable tool. The bends 25 and the bent end 28 will effectively retain the wire part 20 in the member 11, once it has been assembled therein. A friction joint device as above set forth may be advantageously incorporated in collapsible tent constructions, as well as in other equipment requiring a quick assembly and disconnect device.
Another embodiment of the invention is illustrated in FIG. 2, wherein the members 10a and 11a when pulled apart are still prevented from complete separation. In this figure, the spring part 20a is similar to the part 20 described above except that the end portion 28a thereof is shorter, and extends into a side opening 32 in the wall of the member 11a. This blocks the wire part 20a in place in a positive manner. I additionally provide a cord, chain, wire or linkage 34 one end of which is secured to the loop 27a of the wire part 2011 and the other end of which passes through an opening 35 in the wall of, the member a whereby the members are permanentlyv tied to each other even when uncoupled. The cord 34 may be of nylon or other suitable material, as will be readily understood.
Another embodiment of the invention is illustrated in FIGS. 3 and 4, wherein a wire part 201) has an angular end portion 28b which not only passes through but projects radially from the side of the reduced portion 13a of the member 11a.
Adapted to receive the reduced portion 13a is a mem ber 10b having an elongate bore 12b provided with a longitudinal groove or keyway 38. The groove 38 is adapted to receive the projecting end portion 28b of the wire part 2011 when the members 10b and 11a are coupled together, and thus the said members are prevented from having relative turning movement. The loop 27b of the wire part 2% exerts force on the wall of the bore 12b to eifect a frictional detent, as with the previously described forms of the invention. If desired, the cord 34 may \also be used with the device of FIGS. 3 and 4, by tying the cord to the eye 27 b of the spring in the manner indicated in FIG. 2, and securing the cord within the tubular member =10!) in any suitable manner.
It will be readily understood from the foregoing that I have provided a simple, improved separable-joint friction device having novel keying means preventing relative turning movement of the separable parts, and having a novel cord or linkage means preventing complete separation of the coupling members.
Variations and modifications may be made within the scope of the claims, and portions of the improvement may be used without others.
I claim:
1. A separable joint device comprising a pair of telescoping members, one member having an elongate, deep bore and the other member having an elongate hollow part a portion of which is receivable in said bore and another portion of which remains outside of said bore and has a.
larger bore than said one portion, the said part having an internal shoulder between the said longer and smaller bores and having an external shoulder adjacent the location of the internal shoulder and engageable with the.
edge of said one member to limit the telescoping movement of the members, and a folded wire spring disposed in said hollow part, having a yoke portion and having a shoulder portion adjacent said yoke portion, said hollow part and wire spring having cooperable friction detent means normally yieldably retaining the spring in said part and enabling separation of the spring from the part in response to a sufficient pull being exerted on the spring, said'cooperable detent means comprising the said shoulder of the spring and internal shoulder of the hollow part, said shoulder of the spring engaging the said internal shoulder in the bore of the hollow part, thereby to retain the spring therein, and said spring further having one end portion projecting from the end of said 4 hollow part and offset laterally whereby it is adapted to frictionally engage and seize a wall of the bore of the one member to frictionally retain the members together.
2. The invention as defined in claim 1, in which the said one end portion of the spring is formed into a loop disposed substantially in a diametrie plane, said loop having an outer portion adapted to project beyond the outer wall of the said hollow part.
3. The invention as defined in claim 1 in which the wire spring has another end portion bent into the shape of a hook and adapted to engage and hook over the edge of the said hollow part.
4. The invention as defined in claim 1 in which the said one end portion of the spring is formed into a loop disposed substantially in a diametric plane, said loop having an outer portion adapted to project beyond the outer wall of the said hollow part, and in which the wire spring has another end portion bent into the shape of a hook and adapted to engage and hook over the edge of the said hollow part.
5. The invention as defined in claim 1 in which the spring has a second end portion bent at an angle, and in which the hollow part has an opening in its wall, in which said bent end portion is disposed, thereby to lock the wire spring in the hollow part.
6. The invention as defined in claim 1 in which there is a cord secured to the said one end portion of the wire spring and secured in the bore of the said other member,
to prevent the said members from being completely separated from'each-other.
7. The invention as defined in claim 4 in which the hooked end of the wire spring projects beyond the wall of the hollow part, and in which the said one member has a longitudinal groove in the wall of the said bore thereof, said groove being adapted to receive the extended hook, thereby to prevent relative turning between the members.
8. The invention as defined in claim 2 in which there is a cord secured to the said one end portion of the wire spring and secured in the bore of the said one member, thereby to prevent the members from being completely separated.
References Cited in the file of this patent UNITED STATES PATENTS 1,309,060 Boye July 8, 1919' 1,646,049 Boye Oct. 18, 1927 1,964,554 Ball June 26, 1934v 2,043,007 Place June 2, 1936 2,048,812 Place July 28, 1936 2,208,196 Pitt July 16, 1940 2,296,241 Blum Sept. 22, 1942 2,488,480 Spirt Nov. 15, 1949 21,522,394 Myers Sept. 12, 1950 2,551,294 Ross May 1, 1951' 2,580,482 Stukenborg et al. Jan. 1, 1952 2,800,737 Crossan July 30, 1957
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Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3168200A (en) * 1962-11-26 1965-02-02 Parker Metal Goods Company Tubular display stand having removable article supports
US3288502A (en) * 1964-06-15 1966-11-29 Welsh Co Swivel connection
US3326573A (en) * 1965-07-30 1967-06-20 Jr Maurice Joseph Neitzey Draft device or trailer hitch
FR2190193A5 (en) * 1972-06-19 1974-01-25 Martin Gaetan
US4150804A (en) * 1977-10-11 1979-04-24 Jackson Richard R Collapsible kite
US20030110584A1 (en) * 2001-09-20 2003-06-19 The Procter & Gamble Company Cleaning implement
US20080253832A1 (en) * 2007-04-13 2008-10-16 O'connell Tim Non-interfering spring operated button assembly
US20180023609A1 (en) * 2015-01-29 2018-01-25 Lil Monkey Ltd. Spring for connecting a pipe to a connector

Citations (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1309060A (en) * 1919-07-08 Planoocaph co
US1646049A (en) * 1926-05-19 1927-10-18 Boye James H Mfg Co Curtain rod
US1964554A (en) * 1933-11-15 1934-06-26 Briggs Mfg Co Fastener for trimming material
US2043007A (en) * 1930-08-28 1936-06-02 George E Gagnier Fastener
US2048812A (en) * 1932-01-08 1936-07-28 George E Gagnier Fastener
US2208196A (en) * 1939-05-24 1940-07-16 Wilson Jones Co Permanent binding post
US2296241A (en) * 1940-03-07 1942-09-22 Arthur N Blum Pulpwood saw frame
US2488480A (en) * 1946-02-18 1949-11-15 Spirt Milton Telescopic antenna
US2522394A (en) * 1946-03-11 1950-09-12 Edwards Mfg Company Inc Tubular structure
US2551294A (en) * 1946-08-23 1951-05-01 Frank J Ross Telescoping tube construction
US2580482A (en) * 1945-07-12 1952-01-01 Louis C Stukenborg Turnbuckle lock
US2800737A (en) * 1955-02-23 1957-07-30 Clifford G Crossan Landing nets

Patent Citations (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1309060A (en) * 1919-07-08 Planoocaph co
US1646049A (en) * 1926-05-19 1927-10-18 Boye James H Mfg Co Curtain rod
US2043007A (en) * 1930-08-28 1936-06-02 George E Gagnier Fastener
US2048812A (en) * 1932-01-08 1936-07-28 George E Gagnier Fastener
US1964554A (en) * 1933-11-15 1934-06-26 Briggs Mfg Co Fastener for trimming material
US2208196A (en) * 1939-05-24 1940-07-16 Wilson Jones Co Permanent binding post
US2296241A (en) * 1940-03-07 1942-09-22 Arthur N Blum Pulpwood saw frame
US2580482A (en) * 1945-07-12 1952-01-01 Louis C Stukenborg Turnbuckle lock
US2488480A (en) * 1946-02-18 1949-11-15 Spirt Milton Telescopic antenna
US2522394A (en) * 1946-03-11 1950-09-12 Edwards Mfg Company Inc Tubular structure
US2551294A (en) * 1946-08-23 1951-05-01 Frank J Ross Telescoping tube construction
US2800737A (en) * 1955-02-23 1957-07-30 Clifford G Crossan Landing nets

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3168200A (en) * 1962-11-26 1965-02-02 Parker Metal Goods Company Tubular display stand having removable article supports
US3288502A (en) * 1964-06-15 1966-11-29 Welsh Co Swivel connection
US3326573A (en) * 1965-07-30 1967-06-20 Jr Maurice Joseph Neitzey Draft device or trailer hitch
FR2190193A5 (en) * 1972-06-19 1974-01-25 Martin Gaetan
US4150804A (en) * 1977-10-11 1979-04-24 Jackson Richard R Collapsible kite
US20030110584A1 (en) * 2001-09-20 2003-06-19 The Procter & Gamble Company Cleaning implement
US20080253832A1 (en) * 2007-04-13 2008-10-16 O'connell Tim Non-interfering spring operated button assembly
US20180023609A1 (en) * 2015-01-29 2018-01-25 Lil Monkey Ltd. Spring for connecting a pipe to a connector
US10907676B2 (en) * 2015-01-29 2021-02-02 Lil Monkey Ltd. Spring for connecting a pipe to a connector

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