US1540091A - Folding bed - Google Patents

Description

June 2,

F. L.. H. SIMS FOLDING BED 2 Sheets-Sham: 1 v a! M Filed July 24, 1922 F. L. H. SIMS FOLDING BED June 2,

Filegl July 24, 1922 2 Shanks-Sheet 2- HAZE: Q

INVENTDE. 5M. HMW.

ill

Patented June 2, 1925.

FREDERICK I. H, SIMS, OF-SOUTHAMPTON, ONTARIO, CANADA.

-. FOLDING BED.

Application filed July 24,

To all whom it may concern:

Be it. known that I, FREDERICK L. H. SIMS, of the town of Southampton, in the county of Bruce Province of Ontario, Canada, have invented certain new and useful Improvements in Folding Beds, of which the following is a' specification.

This invention relates to folding beds adapted, when folded, to be contained in a sofa like housing such for example as the housing shown and described in my co-pending application No. 577,261 dated July 24th 1922, and my object is to devise a strong and easily folded bed which when extended for use carries the mattress at a satisfactory height from the floor and in which the frame work is automatically reduced in height when the bed is folded to enable it to be con-v tained in a housing provided with a seat of ample depth having its upper surface at a normal height from the floor. It is also my object to so design the mechanism that,

' when extended, it is automatically locked against accidentally folding up and so that it may, when folded. be stowed away inan up ended position. e

I attain my objects by means of the constructions hereinafter described and illustrated in the accompanying drawings in which-- Fig. 1 is a side elevation of a folding bed constructed in accordance with my invention and in extended position;

Fig. 2 a plan view of part of the same;

Fig. 3 a side elevation showing the bed folded. parts of the truck being in section;

Fig. 4 a plan view, partly in section, showing the parts in the position shown in Fig. 3; and a Fig. 5 a front elevation of the truck, part ly broken away and partly in section.

Fig. 6 is adetail view of aportion of a bent lever and its connections.

' In the drawings like numerals of reference indicate corresponding parts in the different figures. y

Briefly the device comprises a truck supporting a mattress frame formed in three sections hinged together with rule joints, the pivots of one pair of joints extending into bearings at the sides ofthe front of the truck, on the axes of which the mattress frame, when extended, may teeter. When so extended the mattress frame is supported by two pairs of legs pivoted on the truck 1922. Serial No. 577,262.

frame, and a third pair pivoted at the outer the axis on which the mattress frame teeters is automatically raised when the mattress frame is extended to raise the latter to a suitable bed height, and lowered when the .mattress frame is folded to reduce the height to facilitate stowage as hereinbefore referred to.

1 is the truck cons'tructed'and bracedin At its rear end the truck is providedwith suitably supported ground wheels 2. The other end of the truck is supported by a pair of bent levers 3 pivoted onv the truck, their loweren'ds forming feet provided with ground wheels 4. It is evident that by rocking the levers 3 the adja cent end of the truck may be raised and lowered. The method of supporting, constructing and operating these levers to so actuate the truck is hereinafter more fully described. r

On the truck is mounted a mattress frame formed in three sections 5, 6 and 7. The inner section 5 and the outer section 7 are formed of T-angle bars. The intermediate section 6 is formed at its middle of L-sec tion and near its ends of T-section. This mattress frame is in the main constructed as specifically set forth'in my co-pending application No.520986, though the means for supporting it are varied.

Adjacent the pivots 8 and 9, the intermediate section is formed with shoulders 10 adapted to engage the 'stemsof the Tsection angles of the adjacent mattress frame sections to limit the hinging of the parts on one another through an angle of about 90.

The mattress frame is pivotally connected with the truck, preferably in alinement with and by the pivots 9,'which are cast on the intermediate section. These pivots 9, it will be noted, are substantially in the same vertical plane as the points of contact of the Wheels 4 withthe ground,

on the mattress frame.

when the mattress frame is folded. (See Fig. When the mattress frame is extended as shown in Fig. 1, the free end of the inner section 5 is supported by means of the legs 11 which are pivot-ed intermediate of their ends on the truck, and have their upper ends notched to form a hook to engage projections 12 on the sides of the mattress frame to support it.

The mattress frame adjacent he pivots- 8 is supported when in the position shown in Fig. 1 by means of the legs 13 pivotally connected at their lower ends with the truck and adapted to engage theprojections 29 the outer section 7 of the mattressframe is supported by means of the legs 1% pivoted on the sides of the mattress section. It is desirable that when the'bed is to be folded that the legs should be simultaneously brought to an inopeative position, and I arrange to elfect this through the operation of a movable head board, which is arranged also to serve as'a mattress retaining device. The head board 15, is connected to a pair of bent arms 16 pivoted on the sides of the mattress frame and preferab inside the flanges thereof to economize in the width of the structure. connected to connecting bars 17 pivotally connected 19 with bent levers l8 pivotally connected'at their lower ends inside the sides of the front of the truck to economizspace in width. If connected outside these levers could be straight but, being inside and as the pivot points 19 require, when the device is folded, to come into alineme-nt with the pivots Qthey require to be bent to avoid interference with other parts. When the mattress frame is extended, the pivot points 19 lie between the pivots 9 and the head board as shown. As long therefore as the movable head board is retained =i its uprightposit-ion, the outer end-of the section 7 of the mattress frame cannot be raised; The connecting bars 17 are connected with the legs l-f-lby pivoted links 20. The upper ends of the legs extend above their pivots and a latch 21 lStPr'OVi-(lfid for each leg pivoted on the I-AEIt Z'YQSS frame and formed with jaws 22 adapted to engage over the upper end of the adjacentleg as shown particularly inFig. 1. A ball connects these latches 21 so that they may-be simultaneously lifted to free the legs. This then permits the legs to swing inwardly and upwardly as the head board is swung to the position shown in dotted lines in Fig. 1. The connecting bars, it will also be seen, swing rear-wardly the levers 18 and the levers and connecting bars are so proportioned that the pivotal points 19 between.

the levers and the connecting bars are brought "into alinment with the pivots 9,

and when in this position and the device is The outer. end of hose arms are "pivotally folded the connecting bars to hold the head board as ama-ttress gripping device as hereinafter' referred to. The outer section of the mattress frame is now free to swing At the time the bent levers 18 have reached the position just described, their lower ends 25 have come into engagement with the side members of the adjacent end of the truck frame so that the levers can swing no further. 7 i

Pivotally connected with the levers 18 are the connecting rods 27, the other ends of these connecting rods being pivotally connected with the lower ends of the legs 11. Links/28 are pivotally connected with the connecting rod 27 and the legs 13. From this it follows that the movement of the head board hereinbefore referred to not only draws up the legs 14, but also swings the legs 11 from engagement with the projections 12 and the legs 13 from engagen'ient below the projections 29 secured to the dos of the intermediatemattress frame section 3.

When the legs are brought to their inoperative position by the bringing of the movable head board to its mattress engaging position, the outer section 7 is free to'be raised at its outer end, the whole mattress frame then teetering on its pi o'tal connections with the truck. As the outer mattress frame section is raised, the section 5 is lowered, while the projections 12 thereon finally come into engagen'ient with the diagonal braces 31 which *br-ace the side members 47 of the adjacent end of the fran'ic and also form tracks down which the projections may ride until the sides of the section rest upon the cross bar 32 of the truck as shown in Fig. 3. The diagonal braces 81 also serve the useful purpose of keeping the mattress fabric clear of the cross member 32 of the truck frame, and also at all times clearof the floor.

As the outer section of the mattress frame is swung towards its final position shown in Figz'B, the shoulders of its'joints with the intermediate section are engaged so that it will rock the sides of the intermediate section to the vertical position, the outer part of the mattress frame then lying substantially horizontal and parallel to the sec-tion 5 which lies below it. I

The free ends of the sections 5 and 7 are held spaced by means of the fixed end boards 33, which are secured by means of arms 34: to the ends of their respective so"- tions.

It will be noted that the movable head board has retained its mattress engaging position during the operation and holds its end of the mattress firmly against the mat tress fabric supportediby the .outer mattress frame section 7,150 that the mattress carried bythe device-folds properly as the bed is closed. This action of the movable head board is ,due' to the fact that, as here,- inbefore described, the bent levers 18 are restrained from any movement which would tend to release the head board fromits engagement by the engagement of the ends 25 of the lovers 18 with the sides of the adjacent end of the truck frame, at all times after the section of the mattress frame carrying the movable head board, when the device is being folded, attains a position perpendicularly above or beyond the axis of the pivots 9 since after that positlon 1s attained any movement of the head board to release its grip tends to farther rock the bent levers 18 which is resisted by their engagement with the frame as stated above.

As hereinbefore stated, the bent levers 3 are operable to raise and lower the-end of the truck frame supporting the pivotal connections between the sectional mattress frame and truck. The movement of these bent levers is effected by connections between their upper ends and the outer mattress frame section. The connection at each side comprises a jointed'link 35 pivotally connected with the outer end of the adjacent lever and the side of the mattress frame section a suitable distance from the pivots 9.

The links are so positioned that thelmes joining their points of connection with the levers and the mattress frame section lie below the pivots 9, so that when the bed is extended as shown in Fig. 1, the weight supported thereon has no tendency to 11ft the outer section of the mattress frame. When, however, the mattress frame section is swung up the levers may swing until they occupy the position shown in Fig. 3, in WhlOl'l projections 42 secured on the lower part of the levers 3 engage the under sides ofthe side members of the truck frame. By this operation the height of the pivots 9 above the floor level has been considerably reduced so that the truck with the mattress frame folded thereon as shown in Fig. 3 will fit into a .housing of which the top ismaterially lower than would otherwise be necessary if the height of the device were not so reduced, while when the device is extended themattress is supported at a height greater than is usual in folding beds. The links are jointed, as shown, since the movement of the mattress frame section 7 is through an arc of about 180, while the bent levers?) have merely to swing through-an arc of approxi mately 30. The links may thus hinge on one another as shown in Fig. 3.

hen the links are extended, a projection 36 on one part is adapted to engage a shoulder37 formed on the'other part, thus making them, when extended, substantially rigid as regards forces operating to break the jointupwardly.

It is necessary to provide a transverse brace, to take the strain of the springs employed with the mattress fabric supported by the mattress frame,at or about the point of connection between the intermediate and inner sections of the mattress frame. For this purpose I provide the bail-shaped brace 38, preferably formed of T-angle bars. The ends of this brace are pivotally connected at 39 to the sides of the mattress frame section 5 adjacent the pivots 8 and in such position that shoulders 40 formed on the ends will engage beneath the stems of the T-sec tion bars to maintain the brace in the position shown in Fig. 1 when the mattress frame is extended for use. The position is such that when the section 5 of the mattress frame is tilted due to the operation of folding the bed that the brace will not swing to or past a vertical position, so that it is readily f01ded up to the position shown in Fig. 3.

To swing the brace upwardly as described it is provided with cranked arms 41 which,

during the process of folding the mattress frame, are adapted to engage the inwardly extending legs of the angle bar side bottom members of the truck frame. The brace is thus held up as the sections of the mattress frame are folded until thebrace finally assumes the position shown in Fig. 3. With this arrangement no spring is required to raise the brace.-

While the general arrangement of the truck frame will be understood from the description hereinbefore given, yet the special construction of the forward end of the truck A frame is of considerable importance, as this must be designed to give great strength and rigidity. It is also important that the end of the frame should be so constructed, that it willnot catch on any of the parts of the .mat-

tress fabric ed. a

The side members 47 are formed of two angle bar members secured together to form a channel member, as shown particularly in Fig. 2 of the drawings. One of these may be of lighter material than the other. These when the mattress frame is foldare cut away at the top and slightly bent insecured to the bottom of the channel formed 1 by the two angle bar members. The diagonal braces 26 are each secured to the cross bar 30, and also extended through openings cut through the sides of the inner angle bar member of the sides 44 and are similarly secured to the bottoms of the channels. The inner side of the cross bar30 is rounded to prevent interference with the fabric of the mattress frame as hereinbefore referred to. r

It will be noted on reference to Fig. 1 that the pivot of each leg 14 on the outer mattress frame section is set closer to the forward side of; the legthan the rear side. This facilitates the folding of the leg close up under the mattress frame and saves about of an inch in the total height of the device when folded, which is an'advantage when the device is to be stowed in restricted space. To avoid the tendency of the leg to tilt inwardly the pivot of the link on the leg and the pivot of the roller 46 by means of which the le contacts'with the floor are set on a line diagonal to the back and front edges of the leg, so that though-the leg inclines slightly outwardly the weight acts perpendicularly to the point of support.

Particular attention should be called to the shape of and arrangement of the legsll, which differin shape from the legs 13 and swing oppositely. The legs 11 are supported on the side members 47 of the adjacent end of the truck frame at a higher level than the pivotal supports of the legs 13. As these legs ll'must lie within the boundaries of the folded mattress, frame as shown in Fig 3, they are necessarily pivoted intermediate .their ends so as to swing inwardly and the connecting rods 27 which are pivotally connected to the lower ends. The legs 11 are bent so that they will not, when the mattress frame is folded, interfere with the fixed head board 33 or the projections 12.

As it is important that the parts of the mattress frame, when it has been extended,

should come accurately to the positions of engagement with the legs .11 and 13, it is preferably to provide means of adjustment in the rule joints connecting the sections.

For this purpose the engagement of each joint between the side members and the intermediate section of the mattress frame and the stems of the T-sect-ion side members of the inner and outer sections of the mattress frame should be by means ofset screws 49 threaded through the ends ofthe side of the intermediate section and engaging the stems of the side members, as shown.

While the general arrangement, of the levers 3 will be understood from the descriptionpreviously given, the details of construction of these levers are of considerable importance. T 0 get the desirable amount of lift, the lower arms of these bent levers 'must be over 6 inches in length between the journal of the roller 4 and the pivots of the bent levers on the lower ends of the diagonal side braces 48 of the side of the truck frame. It becomes necessary therefore to carefully design the partsto, resist any normal side strain while keeping the cost down as much as possible. This is accomplishedby proiding the lower part of each bent lever with a strap 43 riveted thereto and offset at each end. The lower end of the side brace 48 is embraced between the leg and strap, and also the roller 4 at the lower end of the leg.

The operation of the device is as follows, assuming the parts. to be in the position shown in Fig. 1. The first operation is to pull up on the bail 23 to release the latches 21 from engagement with the upper ends of the legs 14, and to then push the movable head board andmattress retainer to the position shown in dotted lines in thisiigure. This operation moves the legs 11, 13 and 14 to their respective inoperative positions. The instant the legs are disengaged, the outer end of the outer section 7 of the mattress frame may be elevated. This operation rocks the levers Z3 and lowers the adjacent end of the truck frame. The sections of the mattress frame tilt onthe pivots-9 until the projections 12 strikethe diagonal braces 31, down which they ride and the further folding of the mattress frame is an hereinbefore described. By a reversal of the movements, the mattress frame is eX- tended. VVhen all' the parts are extended and the movable head board raised, the latches21 are re-engaged with the upper end of the legs '14 as hereinbefore described. I

It will be noted that as the mattress frame is extended the pivots 9 move to a position between the vertical planes in which lie the :points of contact of the wheels 2 and .4 with the ground. This tends to overcome a tendency to tip the truck on the wheels 4 as the mattress frame is unfolded.

The supporting of the mattress frame section 5 on the diagonal braces also materially aids in this-result and the projections 12 are preferably positioned to take as much of the weight of the section 5 off the pivots as possible. T

It should be also noted that the various links, levers and connecting parts are bent or ofiset as may be necessary to enable them to clear one another as they are moved to effect the various operations.

What I-claim as my invention is :4

1. In a folding bed, the combination of a truck adapted adjacent oneend to rest on the floor; a pair of levers pivoted on the truck and extending towards the other end of the truck to form feetand rockable to tilt the'truck on the end resting on the floor; a mattress frame formed in sections hinged together and pivotally supported on said truck adjacent the end supported by the movable feet; and means connected with the mattress frame for rocking said foot levers to ,tilt the truck, the pivots of the mattress frame on the truck being positioned so that they are substantially inthe sarnevertical plane as the pointsof contact of the movable feet with the floor, when the truck is in its lowered position, wh'erehythey shift to a position between said plane and the ver-. tical plane in which lie the points of con tact of the other end of the truck with the floor, when the truck is in uptilted position.

2. In a folding bed the combination of a truck; a mattress frame formed in sections hinged together and pivotally supported intermediate of its ends on said truck; means for raising and lowering the part of the truck on which the mattress frame is piv oted; means whereby the folding of the mattress frame actuates the truck raising and lowering means to lower the aforesaid part of the truck and the extension of the mattress frame aotuates the said means to raise the said part of the truck; means carried by the truck for releasably supporting the part or parts of the mattress frame at one side of the pivotal support; and folding legs adapted to support from the fioor the other part or parts of the mattress frame.

3. In a folding bed the combination of a truck adapted adjacent one end to rest on the floor; feet adjacent the other end of the truck connected therewith and adjustable up and down relative thereto to tilt the truck on the end resting on the floor; a mattress frame formed in sections hinged together and pivotally supported on said truck adj a.- cent the end supported by the movable feet; and means connected with the mattress frame for extending and retracting said feet relative to the truck as the mattress frame is extended or folded.

4. In a folding bed the combination of a truck adapted adjacent one end to rest on the floor; a pair of bent levers pivoted on the truck, their lower ends forming feet adjacent the other end of the truck; said levers when actuated being adapted to tilt the truck on the end resting on the floor; a folding sectional mattress frame pivoted on the truck adjacent the said other end; and links pivotally connected withsaid frame and the upper ends of the bent levers.

5. In afolding bed the combination of a truck; a mattress frame formed in threesections hinged together, and pivotally supported intermediate of its ends on said truck; two pairs of legs pivotally connected to the truck and adapted to support the inner and intermediate sections of the mattress frame; a pair of legs pivoted on the outer section of the mattress frame; a hingedhead board carried on the outer section; and means whereby the swinging of the head board up and down will move the first mentioned pairs of legs to and from their mattress-frame supporting position;

6. In a folding bed the combination of a truck; a mattress frame formed in three sections hinged together, and pivotally supported intermediate of its ends on said truck; two pairs of legs pivotally connected to the truck and adapted to support the inner and intermediate sections of the mattress frame; a pair oflegs pivoted on the outer section of the mattress frame; and means for simultaneously moving all the legs to and from their operative positions.

7. In a folding bed the combination of a truck; a mattress frame formed in three sections hinged together, and pivotally supportedonsaid truck intermediate of its ends; two pairs of legs pivotally connected to the truck and adapted to support the inner and intermediate sections of the mattress frame; a pair of legs pivoted on the outer section" of the mattress frame; and means for simultaneously moving all the legs to and from their operative positions; and a latch for locking one pair. of legs,

and therefore the others, in their operative position.

8. In a folding bed the combination of a truck; a mattress frame formed in three -sections hinged together, and pivotally supported intermediate of its ends on said truck; two pairs of'legs pivotally connected to thetruck and adapted to support the inner and intermediate sections of the mat tress frame; a pair of legs pivoted on the outer section of the mattress frame; a hinged head board carried on the outer section; and means whereby the swinging of the head board up and down will move all the legs to and from their mattress-frame supporting position. 1

9. In a folding bed the combination of a truck; a ma ttressframe formed in three sec tions hinged together and pivotally sup ported intermediate of its ends on said truck; two pairs of legs pivotally connected to the truck and adapted to support the inner and intermediate sections of the mattress frame; a pair of legs pivoted on the outer section of the mattress frame; a hinged head board carried on the outer section; means whereby the swinging of the head board up and down will move all the pairs of legs to and from their mattressframe supporting position; and means for locking the last mentioned pair of legs and therefore the others, in their operative position.

10. In a folding bed the combination of a truck, a mattress frame formed in three sections hinged together and pivotally connected, intermediate of its ends, on said truck; means for raising and lowering the part of the truck on which the mattress frame is pivoted; two pair of legs, pivotally connected to the truck and adapted to support the inner and intermediate sections of the mattress frame; a pair oflegs pivoted on the outer section ofthe mattress frame; means for simultaneously moving all the legs to and from their operative positions; and means connected with the outer section of the mattress frame and 0pera-ble by the swinging] of said section to actuate the raising and lowering means for the truck '11. In a folding bed the combination of a truck; a mattress'frame section pivoted on said truck; a pair of arms pivoted on said mattress frame section; a head boardcarried by said arms and adaptedto be brought by the swinging-of said arms to and from a mattress engaging position; levers pivoted on the truck below the points of'connection of the mattress. frame; connecting bars pivotally connected with the aforesaid arms and the levers, the parts being so proportioned that the pivotal connections between said bars and the levers lie between'the pivot points of the, mattress frame on the truck and the head board when the latter is raised and are brought into alinement with the.

said pivots when the board is in its mat tress engaging position; and means prevent ing the levers-swinging past the said position of pivotal alinement.

12. In a folding bedrthe combination of a truck; a mattress frame section pivoted on said truck; a: pairof arms pivoted on said mattress frame section; a head board carried by said arms adapted to be brought by the swingingof said arms to and from a mattressengagingposition; levers pivoted on the truck below the points of connection of the mattress frame connecting bars pivotally connected with the .aforesaidarms and the levers, the parts. being soiproportioned that the pivotal connections between said bars and the levers lie between thepivot points of the mattress frame on thetrnck and the head board when the latter is raised and are brought into alinement with the said pivots when the board is-in its mattress engaging position; and means forpreventin'g the levers swinging past the said position of pivotal aliiiement; legs pivoted on said mattress framesection adjacent the head board; and pivoted Links connecting said legs With adjacent, parts moving With the head board aforesaid. I V

13. In a folding-bed the combination of a truck; a mattress frame section pivoted on said truck; a pair ofarms pivoted on said mattress frame section; a headboard carried by saidv arms adaptedto be brought by .the swinging. of said arnis to and from a mattress engag ng position; levers pivoted on. the truck below the points of connection of'the mattress frame; connecting bars pivotally connected with theaforesaid, arms andthe levers, the parts being so proportioned that the} pivotal connections between said b:. s: and the levers lie betweeirthe pivot. pointsfof the mattress frame on the truck and, the head board when the latter is raised; and are brought into alinement with the said pivotswhen theboardis in its mattress engaging position; means preventing atti the levers swinging past the said position of pivotal; alinement; legs pivoted on said mat tress frame section adjacent the head board; pivoted links connecting said legs with the connectingbars aforesaid; and means for releasably locking said legs in their mattress frame supporting position.

l l. In a foldingbed the c'oml'iination of a truck adapted adjacent oneend to rest on the floor; a pair of bent levers pivoted on the track, their lower ends forming feet adjacent the other end of the truck; a folding sectional mattress frame pivoted on the truck adjacent the latter end; and folding links pivotally connected with said frame and ma per ends of the bent levers. I

I5, In a folding bed the combination of a truck formed with lower side members; a mattress frame formed in three sections hinged together and aivotally supported on said track; a bent brace pivotal'lv connected *ith thesides of the mattress frame; and cranked arms on said brace adapted to enage the lower side members of the truck to fold up the brace when the mattress frame is folded. V m a g I '16. In a folcling bed the combination of a tlflili" formed with lower side members; a mattress frame formed in three sections hinged together and pivotally siipported on b said trncki a bent brace pi-votally connected with the sides of the mattress frame; cranked arms on said brace adapted to en the lower side member's-of the truck to fold up the bracewhenthe mattress frame is folded} and means preventing the brace swinging. to a vertical position when the mattress frame is extended or in interi'nediate positions. I p p 17. In a folding bed the combination of a truck; a mattress frame section pivoted on said truck; a pair of arms pivoted on said mattress frame section 5 a head board carfied by said arms adapted to be brought by the swinging of said arms to. and from a mattress engaging positioni levers pivoted on the-truck below the points of connection ofthe mattress frame; and connecting bars pivot-ally connected with the aforesaid arms and theleverathe parts being so proportioned that the pivotal connections between said bars and the levers lie between the pivot points of the mattress frame on the track and the headboard when the latter is raised and are bronght intoaline nent with the said pivots whenthe board is in itsmattress engaging position. 7

18.;In afolding jbedhthe combination of a track adapted adjacent one end to're'st; on the floor; a; pair of leverspivote'd on the truck andeXtending towards the other end of flthe truck to form feet and roclifible to tilt the thick onv they end resting on the floor; a mattress frame formed of inner,

outer and intermediate sections hinged tolit) gether and pivotally supported on said truck so that the intermediate section may swing to a position depending from said pivots with the. inner adjacent section lying at an angle thereto; guides inclined down wardly and inwardly; projections on said mattress frame section adapted to ride on said guides downwardly as the mattress frame is folded and upwardly as it is tended; and means connected with the mattress frame for rocking said foot levers to tilt the truck, the pivots of the mattress fram on the truck being positioned so that they are substantially in the same vertical plane as the points of contact of the feet with the floor, when the truck is in its lowered position, whereby they shift to a position between said plane and the vertical plane in which lie the points of contact of the other end of the truck with the floor, when the truck is in its uptilted position.

19. In a folding bed the combination of a truck; a mattress frame formed in sec tions hinged together and pivotally sup ported on said truck so that one section may swing to and from a position depending from said pivot with an outer section lying at an angle thereto or both sections may lie substantially horizontal; a pair of supporting legs for said sections pivoted at their lower ends on the truck frame; a pair of supporting legs for said sections pivoted intermediate their ends on the truck frame; and connections for simultaneously swinging said legs to and from their mattress frame supporting position connected with one pair of said legs above their pivots and the other pair below their pivots.

20. In a folding bed the combination of a truck; a mattress frame formed in sections hinged together and pivotally supported on said truck so that one section may swing to and from a position depending from said pivot with an outer section lying at an angle thereto or both sections may lie substantially horizontal; a pair of supporting legs for said sections pivoted on the truck frame adjacent the -free end of the outer section of the mattress frame and provided at their upper ends with notches; projections on said mattress frame adapted to engage in these notches toresist either upward or downward movement of the outer mattress frame section; and a second pair of legs pivoted on the mattress frame adapted to support the same adjacent the junction between the two sections.

21. In afolding bed, the combination of a truck; a mattress frame formed in three sections hinged together and pivotally supported intermediate of its ends adjacent one a mattress frame is partly unfolded.

22. In a foldable mattress frame formed in sections pivotally connected together; shoulders formed on one section adjacent each pivot; and a set screw threaded through the other part adjacent each pivot adapted to engage the shoulder to limit the unfolding movement of the adjacent section. a

In a folding bed, the combination of a truck; a mattress frame formed in sections hinged together and ported on said truck adjacent one end so that one section may swing to a position depending from the pivots with an inner section lying at an angle thereto; upright side members forming part of the truck frame at the end remote from the pivots; legs pivoted at the upper ends of saiduprights; projections on the inner mattress frame section engageable by said legs when said inner section is raised to a substantially horizontal position at the level of the piv pivotally supots; and diagonal side braces for the truck frame extending downwardly and inwardly from said uprights, said projections being adapted to ride over said braces.

Signed at Toronto, Canada, this 12th day of July, 1922. V

FREDERICK L. H. SIMS.

Images