US1240243A

US1240243A - Collapsible and convertible chair.

Info

Publication number: US1240243A
Application number: US8014316A
Authority: US
Inventors: Giovanni Norberti
Original assignee: Individual
Current assignee: Individual
Priority date: 1916-02-24
Filing date: 1916-02-24
Publication date: 1917-09-18
Anticipated expiration: 1934-09-18

Description

NQRBERN. imm-@asu .ma EONVEHTIBLE CMH.

Pntenfi-d Sapin 1S, 191?.-

/' i i lv 01,12%] (fvr) 11.'

G. NOHBERTI.

COLLAPSIBLi ANG CONVEBIIBLE CHAIR.

APNIC/umu mio $511,114,191@

1 ,240,243 Patented Sept. 18, 1917.

2 SHEETS-'SHEET 2.

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27" Wgmmd n?? 7%6071 qqs.

UNITED STATES OFFICE.

GIOVANNI NORBERTI, OF BOSTON, MASSACHUSETTS.

COLLAIPBIBLE A ND CONVERTIBLE CHAIR.

specification of Letters Patent.

Application Aleid February 24. 1916. I Serial No. 80,143.

ings is embodied in a, structure that is designed especially for military hospital` use', its compctness when collapsed facilitating storage and transportation, and its several uses making it particularly well adapted to fulfil the requirements of military field operations.

Referrin to the drawings that form a part of this specifications-- Fi `re 1 represents a side elevation of a collapsible folding structure embodying the present invention and adjusted to form an arm chair. An adjustable leg-rest and n. foot-rest arranged to support the latter, are indicated by broken lines.

Fig. '2 represents a longitudinal vertical section of the structure shown by Fig, 1 adjusted to provide a cot or table as the ease may be.

ig. 3 represents an end elevation of the sidestructure in the condition represented by Fig. 2, the direction of view bemgvfrom r1 ht to left with reference to Fig. 2.

ig. 4 `refnesents a side elevation of the structure at the lefthand of Fig.' 2, the element hereinbefore referred to as si legrest bein arranged in position to serve as a hee -rest, and a movable extension bar being shown in extended position to afford means whereby the structure may be carried when used as a stretcher.`

Fi 5 represents a top plan view of the comp ete straf-ture collapsed into a sulrstan tiali Hat form for storage or trensportatiori.w`

T e same reference characters .indicate the same parts wherever they oecur.

Referring to Fig, 5 the struetare'lnelndes two open rectan nllar frames one of-which is .arran ed insi e the other in nested relation. 'I ie outer or larger one of said frames comprises

parallel side bars

10, 10, a crossbar,11 connecting

bars

10, 10 near one end and a erosslbar 12 connecting bars l0, 10 near the other end. The inner or smaller one of said frames comprises

longitudinal bars

13, 13, a` cross-bur 14 connecting the lat ter near one end, and a cross-bar 15 con* nreting bars 13 near the other end. These two frames are connected, one with the other. by pivot members or trunnions 16, 1` the latter being arranged to extend through bars l0 and 13 on a common axis. Members 16 extend also through

links

17, 17 of armrests 18 hereinafter described Cross-ber 15 isinthjs instance a relatively small rod and is sarroamled by a sleeve 19. A rectangular sheet :lo of suitable thin sheet material such as canvas is anchored at one end to cross-bnr 11 (Figs. 1 and 2.) and at the other end'it extends around sleeve 19, being provided with-a loop or pocket 21 therefor. The cffet-tive length of the sheet material 20 is such that said element is' drawn tight bythe two said frames when the latter are nested substantially in a common plane as shown by Figs. 2 and 5, the sheet material in such case being adapted to serve as a table top, or as a bed bottom, as the case mcy be. On thel other hand when the two seidV frames are adjusted to any one oftheir several chair-forming angular relations (see Fig. 1l the sheet materia 20 is slackened and serves as a chair-bottom and back-rest.

The two said restan lar frames are ea puble of being adjuste to a lumlty of an-` gular relations to aiord rec ining, positions of different degrees, and 4for this purpose said larger or outer frame is provided with struts 22 and the bars 13 of the smaller a, tllftture is adjusted to form n chair. This fooifrestis capable of Swingin relatively to the

hars

10, 10, bein connect to thel latter by ivot members 2 27. Struts 98 are ear Patented Sept. 18,1917.

'IIS

riet by the footrest and are connected to the latter by pivot members 99. 29. The struts are connected by cross-bar 430 so that they are to all intents and pur roses a unit.

` When it is desired to use the e ement 26 as a footrest the struts Q8 are placed in the position shown by solid lines 1n Fig. 1, but

when scid element is not being usi-d :is :i footo'est the struts are capable of being folded into nested relntion therewith un shown by Figs. Zend 5.

A leef 31 is mounted upon rod 1.5 and is capable of swinging about the letter. rllhis leef is adopted to serve :is a. leg-rest or as n head-rest, according to whether the entire structure is in chuir-form, or in bed-form. As shown by broken lines in Fig. 1 the elcinent 31 is in position to serve as :i leg-rest, end the element 26 as reiiresented by broken lines is arranged to engage und support the lower end of the leg-rest. For this purpose the leg-rest is provided dwith a. plurality of notches 32 into which the free end ofthe foot-rest in ay be inserted. By shifting member 2G from one notch 32 to another the angu lsu' position of the leg-rest muy be changed. ln this connection it is to be noted that the chair is adjusted to its most upright position, end that if it were adjusted to n position of relativi-ly great reelination the rod would bc considerably lower than it is according to Fig. l. This would have the clfeet o'l pinning the leg-rest in u position more nearly horizontal than that shown.

The arm-restsI 18 nre connected to thc links 17 by pivot members 33. Links 34 connect the armrests with struts 22. The

members

22 and 34 ,are connected by pivot membersv 35. Screw bolts 3G connect links 34 with the arm-rests, and thumb-nuts37 having screw-threaded connection with bolts 36 are arranged to bear against the sides of the i arm-rests to clamp the latter `against the links 34. By so clamping the arm-rests rclutively to the links the former may be held stationary, but when the clem ing stress is relieved the armrests may moved to various positions.

Then it is desired to convert the struc turc into a, table, or into a, cot Without a head-rest, the leercst may be moved into nested position as shown in Figs. 2 and 5.

Continuing the transformation of the structure from e chair to e table or cot, the thumb-nuts 37 are loosened to afford free*- dom of movement of the arm-rests. Struts 22 are detached from bars 13 -thun permitting the two said rectangular frames to be moved relatively to each other about their pivots ortrunnions 16, to the nested relation shown by Figs. 2 und Sheet material 20 is thus tightened forming' e suitable top for a. table or n. suitable bottom for a bed. Relori-iup,r to Fig. 2 the bers I3 are retniru-,d in the position shown, by e pair of locking plates fll. These plates are mounted upon .nnss-bar 'Il by ineens of pivot memhersfl. Preparatory to moving the trames to nested relation plates il would be moved to make a haar posseggo way` for the ends of bers 13 :ind would then be moved under Said ends 6 :is shown bv Fitz. 2.

The clement 26 is usable to support one end of the larger l'rnme when the structure is adjusted in the form of n table or bed, und :1t the suine time movable legs 50 nre usable to support the other end.` When the element 26 is used for the purpose lust stated it may be locked in the desired angular relation, :is shown by Figs. 2 und 2i, by brucos 5l. 'lhese braces are connected to bars 13 by pivot .members 52, und they are provided with cyl-.s adopted to fit over the projecting ends of' pivot pins 29. ]n order togunrd aguinst accidental dislodgment of the bruce rods 51 from the pins 29, thc element 26 is provided with retaining devices 53 each oi' which is in the form of' e leaf spring. The devices 53 :ire affixed to the element 2G 'und cover the outer ends of pins 29 but they may be sprung outwardly from the endsof seid pins. Eyes 55 formed in the members 53 :ire adapted to receive the ends ol seid pins, und when the free ends of members 53 are swung away from the pins the members 51 may be nttuehed to or detached from the pins. When the lim-:3e rods 5L riot used es such they muy he arrnnged to extend substantially pnrullel to the bars 13, and to overlie the retaining pins 56 that projwt from the confronting faces of seid bars for that purpose.

The legs 5U tluit are usable to support the other end of the structure are connected to a. cross-har 57 byqpivot members 58. The ends of ber 57 are mixed to' hers 10, 10. The legs 50 are represented in supporting' position by solid lines in Fig. 3, und erev represented in folded position by broken lines in the same figure. A movable retaining device 59 connected to cross-bar 5'? by a ivot pin 60 is adapted to hold the legs in olded position. The free ends of the legs huve reduced portions 61 that are adapted to enter eyes 62 formed in plates 63 nilixcd to the free ends 0f struts 22, and when the legs :md struts are.

connected in the relation shown by Figs. 2 and 3 the load upon the legs is sustained by plates 63. The reduced ends of the legs do not touch the floor, ground or other supportingsurfece, the greater urea of the ends of struts` 22 being utilized for that purpose.

.If it should he desired to provide the cot with a hcndrest the elements 31 may be used for that purpose. In such case element 31 would be arranged to project over bar 12 as are arranged to coact with two of the guides 65 to prevent the members G4 from being withdrawn from the guides.

"I claim:

1. A collapsible structure comprising two rectangular frames arranged one within the other, coperative trunnions connecting said frames, said frames being capable of relative angular movement about said trnnnions, a rectangular sheet of thin flexible material fastened at one edge to one of said frames and at the opposite edge to tbe other one of said frames in lines parallel to the axis of said trnnnions, said frames being arranged to sustain said sheet material in a slack condition and in a tant condition according to`their angular relation, bracing means arranged to brace said frames in chair-forming relation with said sheet material in a Slack condition to form the seat and back, a foot-rest pivotally connected to one end of the outer said frame, two coperative legs pivotally connected to the other end of said onter frame, said legs and said hraeine means having separable portions arranged-)to coaet to brace said legs in framesnpporting position. and means arranged to brace said foot-rest in frame-supporting positin.

3. A collapsible structure comprising an open rectangular frame, a smaller open rectangnlar 'frame arranged within the first said frame, trnnnions connecting said frames so that they may be nested 1n a common plane and moved relatively to various angular relations, a rectangn ar sheet' of thin flexible material fastened along one edge to one of said frames and along the opposite edge to the other one of Said frames, where by it is held tant to form a bed-bottoni when said frames are nested, and whereby it is snstained in a slack condition to form a chairseat and chairwbaek when said frames are 1n an angular relation* meansI arranged to hold said frames in chair-forming angular relation a leg-rest pivotally mounted on Said smaller frame, supporting means pivotally conneeted.to tbe first said frame and arranged to sustain said leg-rest in operative position when said frames are in chair-forming relation, said supporting means being arrangeable to support one end of the first said frame when said frames are in said nested relation, said leg-rest being arranged to be sustained by said frames. conjointly, to provide a head-rest when said frames are in said nested relation` and means arranged to support the other end of the first said vframe when said frames are in said nested relation.

NORBERTI GIOVANNI. Witnesses:

WILLIAM J. EDWARDS, Maar E. BURT.