US1711255A

US1711255A - Resilient cushion

Info

Publication number: US1711255A
Application number: US114763A
Authority: US
Inventors: Erwin A Weinman; Robert C Beach
Original assignee: Individual
Current assignee: Individual
Priority date: 1926-06-09
Filing date: 1926-06-09
Publication date: 1929-04-30
Anticipated expiration: 1946-04-30

Description

April 30, 1929. E, A wEmMAN ET AL 1,711,255

RESILIENT CUSHION Filed June 9, 1926 sfr c' ,W www@ ATTORNEY cially resilient Parenteel Apr. 3o, 1929.

UNlED STATES EIR-'WIN A.. WEINMAN AND ROBERT C. BEACH,

F SEATTLE, WASHINGTON.

RESILIENT CUSHION.

Application nled June 9, 1926. Serial No. 114,763.

@ur invention relates to improvements in resilient pneumatic cushions and the object of our improvement is and e-licient pneumatic cushion that is espeand that is very durable in construction.

Another object is to provide a resilient pneumatic cushion which utilizes both the elasticity of rubber and the resiliency of an' to give resiliency and elasticity to the cushion, said cushion comprising rubber air containers drawn tightly across a rigid frame and unsupported except at their ends.

A. further object` is to providey a cushion in which the air containers that are stretched across the cushion frame are drawn over an inated air b'ag or tube that rests upon and extends along the front edge of the cushion thus providing means for varying the tension of the other air tubes and Jfurther providing an easy and comfortable roll at the front edge of the cushion that affords extra resiliency and elasticity.

A further object is to provide a cushion embodying a plurality of elastic tubes stretched from front to rear of the cushion across a rigid frame and arranged so that a person on one portion, as at one end, of a relatively long cushion, will not cause, the other end of the cushion to bulge or raise up.

A- urther object is to provide aI cushion in which the rubber tubes that form the seat portion are supported at both ends by releasable means so that said tubes may be easily released and drawn outwardly through the bottom of the cushion frame Jfor the purpose of repair or replacement without removing the padding and upholstery on the top ot the cushion.

Further objects are to provide a 'frame structure of eiicient construction having novel means for supporting the-tubes at both the front and rear edge of the cushion.

Other and more specific objects will 'be apparent from the following description and accompanying drawings.

ln the drawings Fig. 1, is a plan view, with all coverings removed, of a cushion constructed in accordance with our invention.

Fig. 2, is a view in cross section ot the same on line 2-2 of Fig. 1, the padding being shown on the cushion and a position that certain air tubes may assume when withdrawn for repair being shown by dotted lines.

Fig. 3, is a fragmentary view in perspecto provide a simple and comfortable to siton tive of one corner ot the cushion frame and support for the tubes.

f Fig. 4, is a fragmentary sectional perspective view of a moditied form of cushion member using an air sack for a seat portion instead of a plurality of tubes.

Fig. 5, is a fragmentary sectional view of a modification of the invention.

Like reference numerals designate like parts throughout the several views.

The drawings show a single cushion of short length, it being understood that the longer cushions are similarly made.

Figs. 1 to 3 show a cushion embodying a rigid rectangular frame provided at its rear edge at the two ends, with upwardly extending brackets 11 having arcuate recesses 12 in their upper ends for the receptionof a tubular support or rod 13 that eX- tends longitudinally of the rear edge of the cushion .trarne and is spaced above the rear member of the trame 10.

A. support 14 of the cross sectional shape shown in Fig. 2 is provided at the front edge of the fra-me, said support having a vertical rear wall 15, the ends of which rest in notches 16 in the side bars of the frame 10, and said support having an inclined top wall 17 on which a pneumatic tube 18 that 4 extends along the front edge of the cushion may rest. rlhe support 14 is provided at each end on its front edge with a rearwardly extending notch 20 arranged to slip over a stud screw or bolt 21 that extends upwardly from the frame, the diameter of the head of the stud screw 21 being Igreater than the width of the notch 20 and the stud screw serving to hold the support in place.

A plurality of pneumatic tubes 22 extend crosswise of the cushion from front to rear in side by side relation. The rear ends of these tubes are securely clamped between the rear member of the frame 10 and a metal clamp bar 23 that is secured to the rear frame member by bolts 24. The tubes 22 extend upwardly over the rear of the support 13. thence forwardly across the cushion frame, thence downwardly over t-he tube 18 thence under the front support 14 and are securely clamped between the front member ot' the frame 10 by a metal clamp member 25 thatl is secured to said front frame member by bolts 26.

The tubes may be protected by coverings or chang strips as follows. A covering 27 on t-he rearsupport 13, 'a ohafing strip or reinforcement 28, preferably cemented to the rear ends of the tubes 22 and interposed between said rear ends of said tubes 22 and the. clamp bar 23 and extending upwardly over the rear support 13. a covering 30 on the front support 14 and a ehafinzgsr strip or coveringv 3l interposed between the tubes 22 and the clamp bar 25 and extending between the tubes 22 and the bottom and 'front edge oi the. front support- 111-.

'lhe reinforcement :28 that is secured to the rear ends ot' the tubes is substantially non-elastie thereb)Y preventing those portions of the tubes between the supporting rod 13 and clamp bar 23 from stretching and,

consequently preventinga chaing on the rod 18 Suitable padding 32 and upholstering' 38 may be drawn over the top of the tubes 22 and secured to the sides of the frame 10 and a removable bottom member 3d may be secured to the frame.

Each tube 22 is provided with an air valve 35 by which it mav be iniiated and the front tube 18 has an air valve 36 that entends through the front support 14;.

rllhel front tube 18 is an important feature, in that it forms for the cushion and serres as a means ost regulating' or adjusting the tension oit the other tubes 22, it being obvious that the tension ot the tubes 22 may he increased or decreased by increasing or decreasinga the presn sure in the. front tube 18.

Another important feature ot the invention resides in the means for supporting the pneumatic tubes in such a manner that said tubes may be drawn outwardly through .the bot-tom of the traine 10 as shown by dotted lines in Fig. 2 for repair or replacement. To thus expose the tubes it is first necessary to defiate the front tube 18, after which, the rear supporting rod 13 may be removed and the front support ltmay be first raised up clear of notches 16, then drawn rearwardly to disengage the same from stud screws 21 and then removed entirely from the cushion leaving the tubes 22 free to hang down out ot the cushion as shown by dotted lines in Fig. 2, where they may be conveniently patched or repaired. The front tube 18 is entirely removed with the front support 14. The nuts of the clamp bolts are all on the inside so thatl the ends of the tubes 22 may be easily unclamped for replacement ot tubes. The tubes and parts ot the frame are easily put back. the front tube 18 being inflated after it. is replaced and serving to put the other tubes 22 under tension.

Another important feature of the invention is that the tubes 22 are under tension and also iniiated and are unsupported except at the ends'thus giving' the resiliency due to both the elasticity of the rubber and the elasticity or resiliency of the air.

a satisfactory iront edge 'd 1n a. long' cushion for supporting more than one person the. use of a'plurality of separate tubes 22 extending from front to rear has a substantial advantage over the use ot' a single air sack duc to the tact that it materially reduces the tendency of thc Weight of a person on one part of the cushion to bulge other parts of the cushion whereon other persons may sit, it being1 apparent that the weight ot' each occu ant ot' the cushion is supported entirely on t lose tubes on .vliieh he sits and does not aiiect the other tubes, whereas in the case of a,

single air bag or, sack pressure in one place toi-ees the air to another place and may bulge the cushion.

Fig. d, shows an alternative form oit cushion which is the same as the previously described cushion except that the tubes 22 are replaced by a pneumatic bag; d0 that is stretched from iront to rear of the cushion trame over a front tube 41 that, corresponds to the front tube 18.

Fig. 5, shows an alternative construction ot both the front and rear brackets or supports. Irlhe tront bracket 412 bein of sub stantially 'the shape shown., and haring ownwardly extending clips` or portions ist that tit over the ends of clamp bolts lfd and are secured by nuts ad. The rear cross member is made up of two parts d5 and iti and the ends ot tubes d? that corres` ond to the tubes 22 are clamped by bolts 118 etween said two parts. Said rear cross member formed of parts t5 and 46 is removably supported at the ends by brackets 4:9 that are rigid with a trame 50.

The foregoing description and accom anying drawings clearly disclose a preti@ embodiment of our invention but it Wilt be understood that this disclosure is merely illustrative and that many changes in the cushion may be made within spirit of the following claims..

e claim:

1. In a pneumatic cushion a. frame a'ording an edge support of substantial Width and having a center which is unobstructed in the area of movement of the cushion seat, a plurality of elastic seat tubes secured at opposite ends to the frame so as to extend across said frame loosely either when iniated or non-inflated and unsupported from below except adjacent their ends and a pneumatic tube extending longitudinally along said edge support beneath said seat tubes and resting throughout the greater portion as shown in Fig.. 1,

Cfl

erred the scope and oit its width on said edge support and casaid frame7 a support resting on, and extendminets ing lengthwise along the iront edge of said frame, an air tight elastic tube, capable of inflation, resting on said front support, clamp bars bolted to the inner sides of the front and rear frame members respectively and a plurality of air tight elastic tubes capable of inflatlon having their ends securely clamped by said clamp bars, said tubes being drawn tightly across said frame over said rear rod and over said front elastic tube. r

3. lin a cushion of the class described, a

rectangular frame, upright brackets secured.

to the rearv corners of said frame, a rod removably supported in said brackets, a removable supporting member resting on7 and extending along the front edge ci? said frame, said supporting member having a vertical rear Wall and having a rearwardly extending notch. in its front edge near each end, a stud screw in the frame near each front corner over which the corresponding notch in the front support :may tit, said trame being notched at the sides 'or the reception oi`-tl1ose portions of said vertical rear Wall near the ends, an inated elastic tube resting on said front support and a plu'- rality of inated elastic tubes drawn across said trame under tension over said rear rod and over said first named vinflated. tube.

The foregoing specication signed at Seattle, Washington, this 13th day of May, 1926.

nnwin A. WEEIKNMAN. nonnn'r Ilc. Benen.