US2617472A - Reclining article of furniture - Google Patents

Description

A. LOR E N Z RECLINING ARTICLE OF FURNITURE Nov. 11, 1952 5 Sheets-Sheet 1 Filed Nov. 2, 1945 INVENTOR ANTON LORENZ 14/1 ATTORNEY Filed Nov. 2, 1945 5 Sheets-Sheet 2 Nov. 11, 1952 A. LORENZ 2,617,472

RECLINING ARTICLE OF FURNITURE v .INVENTOR 'A/VTO/V ZOIPENZ Nov. 11, 1952 A. LORENZ 2,617,472

RECLINING ARTICLE OF FURNITURE Filed Nov. 2, 1945 5 Sheets-Sheet 3 INVENTOR A/Vm/V LORENZ la ATTORNEY Nov. 11, 1952 A. LORENZ RECLINING ARTICLE OF FURNITURE S'SheetS-Sheej; 5

Filed Nov. 2, 1945 l ATTORNEY Patented Nov. 11, 1952 UNITED STATES ATENT EFICE 4 Claims.

My invention relates to an article of furniture, and more particularly to a reclining article of furniture, wherein the back-rest and seat form movable members of a polygonal link-system swingably mounted on a support, and wherein the movements of the members of said polygonal link-system are positively controlled by a guiding link pivoted to the support and operatively connected with a member of the polygonal linksystem.

An object of my invention is to provide a convenient controlling mechanism for a leg-rest swingably mounted on the seat of a reclining article of furniture of above described type, by means of which the angle between the leg-rest and the seat is automatically altered when the movable members of the reclining article of furniture including the back-rest and the seat are brought from a certain position, such as the sitting position, into another position, such as a reclined position, or vice versa.

Another object of my invention is to improve on reclining articles of furniture of above described type as now ordinarily made.

With the above and other objects of the invention in view, the invention consists in the novel construction, arrangement and combination of various devices, elements and parts, as set forth in the claims hereof, certain embodiments of the same being described in the specification and being illustrated in the accom anying drawings forming part of this specification, wherein:

Fig. 1 is a side elevational view of an adjustable reclining chair according-to the invention,

Fig. 2 is a sectional view taken on line 22 of Fig. 1, illustrating the locking device of the chair,

Fig. 3 is a perspective view of the support carrying the movable members of the chair shown in Fig. 1,

Fig. 4 is a perspective view of a different embodiment of a support for a chair according to the invention,

Fig. 5 is a side eleva ional view of a di erent embodiment of a chair according to the invention,

Fig. 6 is a side elevational view of a further embodiment of a chair according to the invention, wherein the effective length of some members of the chair may be ad usted,

Fig. '7 is a side elevational view of still another embodiment of a chair according to the invention,

Fig. 8 is a side elevational view of another embodiment of an adjustable reclining chair according to the invention,

Fig. 9 is a side elevational view of a further embodiment of a chair according to the invention,

Fig. 10 is a side elevational view of-still another embodiment of a chair according to the invention,

Fig. 11 is a fragmentary side elevational view of a different embodiment of the controlling mechanism of a chair according to the invention,

Fig. 12 is a top plan view of the guiding link of the controlling mechanism shown in Fig. 11,

Fig. 13 is a sectional view taken on line i 3-53 of Fig. 11, and

Fig. 14 is a fragmentary side elevational view of still another embodiment of a controlling mechanism of a chair according to the invention.

Referring now to Figs. 1 and 3, 29 generally indicates a support in the shape of a casing of any suitable material, such as metal, wood, plastic, or glass. A laterally projecting arm 22 is arranged on each side of the chair at i s rear end. Each arm 22 is provided with a bore 24. Furthermore, the support 29 carries a transverse rod 26, the ends of which project on both sides of the support. 1

28 indicates a seat pivotally connected with a back-rest 30 by means of pivots 32. On each side of he chair, one end of a connecting link 34 hereinafter called the top connecting linkis pivoted to an intermediate point of the back-rest at 35. The top connecting links 34 form the arm-rests of the chair. The other end of each top connec ing link 34 is pivoted to one end of a second connecting link 35 hereinafter called the front connecting link at 38. The lower end of said front connecting link 36 is pivoted to the seat 28 at M. Thus. the pivotally interconnected back-rest 36, the link-chain composedof, he two connecting links 34, and the seat 28 form the movable members of a polygonal link-system in the sha e of a quadrilateral link-system. Said quadrilateral link-system is -swingably mounted on the support 2?.) at the pivotal connecion 32 between the back-rest and the seat for movement abo t a single axis: on each si e of the chair. the pivot 2 connectin the seat 2 3 with the back-rest 35 is inserted into the bore 24 of an arm '2 of the support 2%. On each side of the chair, the movements of he movable members of said quadrilateral link-system are controlled by a guiding link 42, thelower end of which is swingably mounted on the transverse rod 25 carried by the support, and the upper portion of which is pivoted to the link-chain or pair of connecting links 34, 36, at the pivotal connection 38 between said connecting links.

A leg-rest 44 is pivoted to the front portion of the seat 28 at 46. Said leg-rest 44 has an extension 48 on each side of the chair, said extension projecting upwardly beyond the pivotal connection 46 between the leg-rest and the seat. The extension 48 is rigidly connected with the leg-rest 44. According to the invention, the movements of said leg-rest 44 are controlled by a controlling link 50 arranged on each side of the chair. One end of said controlling link 58 is pivoted to said extension 48 of the leg-rest 44 at 52, and the other end of said controlling link 50 is pivoted at 54 to an extension 56 rigidly connected wi h the main body of the guiding link 42. Said extension 56 of the guiding link projects outside the quadrilateral link-system.

The sitting position of the movable members of the chair shown in full lines is limited by the upper edge of the support, on which, the seat. comes to a rest.

When the occupant of the chair leans the weight of his body against the back-rest, he may readily swing the movable members of the chair into a reclined position, for example into the extreme reclined position shown in dash and dot lines in Fig. 1. As mentioned above, during such a movement the guiding link 42 controls the movements of the members 28', 36', 34, 36 of the quadrilateral link-system and the movements of the leg-rest 44 through the medium of its extension 56 and the controlling link 58.

The extreme reclined position of the movable members of the chair is limited by a stop 58 mounted on the support, which forms an abutment for the back-rest.

The movable members of the chair may be held in. any desired position by means of a locking device generally indicated by 60. As best shown in Figs. 1 and 2, said locking device 60. comprises a handle 62 screwed on the threaded end of the pivot 35 between the back-rest 35 and. the op connecting link or arm-rest 34. Said pivot 35 has a head 64 resting against a surface of the back-rest 30. A square portion 66 of the pivot 35 is inserted into a corresponding square aperture of the back-rest 38, whereby the pivot 35 is prevented from rotation. When the user of the chair loosens the locking handle 62, the

surface of the hub 68 of said handle is disengaged from the surface of the top connecting link 34, so that the movable members of the chair may be freely moved from one position into another one. When th locking handle 62 is ightened, the surfaceof the hub of the handle is pressed against the top connecting link 34, whereby the latter is pressed against the back-rest 38 engaged with the head 64 of the pivot 35, so that the members of the chair are held in their position.

Of course. if desired, any other type of locking device may be used.

Fig. 4 illustrates a different embodiment of a support a, on which the movable elements of the chair shown in Fig. 1 may be mounted. The support 28a shown in Fig. 4 is in the shape of a casing closed at all sides.

It is understood, that the supports of the type shown in Figs. 3 and 4 may also be made of.

several parts connected with each other in any suitable manner.

In the embodiment of a chair shown in Fig. 5, the quadrilateral link-system I28, I38, I34, I36 swingably mounted on the support I28 at I32 and its control by the guiding link I42 substantially corresponds to similar mechanisms of the chair shown in Fig. 1. Furthermore, again one end of a controlling link I55 is pivoted at I52 to the extension I48 of the leg-rest I44 swingably mounted on the seat I28 at I45. However, the other end of said controlling link I50 is pivoted to the guiding link I42 at the pivotal connection I38 of the latter with the pair of connecting links I34, I36.

The sitting position of the movable members of the chair shown in full lines in Fig. 5 is limited by the upper edge of the support I28 on which the seat I28 comes to a rest. When the backrest. [3.8 is swung about its pivot I32, the movable members of the chair are brought into a reclined position, for example into the extreme reclined position shown in dash and dot lines in Fig. 5. During such a movement the guiding link I42 controls the movements of the members of the quadrilateral link-system'as. well as the movement of the leg-rest I44.- The extreme reclined position is limited by a self-locking effect of the mechanism which is obtained as soon as the controlling link and the extension of the legrest come into alignment. with each other in the position I58, I48 as shown in dash and dot lines.

Th movable members of the chair may be held in any desired position by means of a locking device ISB of the type shown in Fig. 2.

According to Fig. 6., the quadrilateral linksystem formed by the. pivotally interconnected seat 228., back-rest 230, and link-chain com rising the top connecting link 234 and front connecting link 236 is swingably mounted on the support 228 at 232. On each side of the chair, the lower end of a guiding link 242 is pivoted to the support 228 at 22.6, and the upper end of said guiding link is pivoted to the top connecting link 234 at a point 239 spaced from the pivotal connection 238 between the top connecting link and the front connecting link. The extension v248 of the leg-rest 244 pivoted to. the seat 228 at 248 is pivotally connected at 252 with on end of a controlling link 258,-the other end of which is pivoted to an intermediate point of the guiding link 242 at 255. As will bereadily understood, the guiding link 242. controls the movement of the members of the quadrilateral link-system 228, 23.0, 234, 236 and the movement of the legrest 244. The guiding link 242, the front connecting link 236, the extension 248 of the legrest, and the controlling link 258 are provided with series of holes 278, and the pivots 238, 239, 252, and 255 are disengageable so that they may be inserted into selected holes of said series of holes 218, whereby the effective length of the guiding link, front connecting link and controlling link may be varied and adjusted.

The movable members of the chair may be held in any desired position by means of a locking device 260 of the type shown in Fig. 2.

According to the embodiment shown in Fig. '7, the support 320 comprises two side frames 32I connec ed with each other by transverse bars 323, 326.

The rear end of the seat 328 is pivoted to the back-rest 330 at 332. The rear end of the top connecting link 334 is pivoted to an intermediate point of the, back-rest 338 at 335, and the other end of said top connecting link 334 is pivoted at 34I to an intermediate connecting link 312 representing a portion of a guiding link 342 pivoted to the support at 326. The upper end of the front connecting link 336 is pivoted at 343 7. 1y connected with the-main body of the guiding link 642. pivoted tosaid extension 656 oiitheguiding link at 654, the other end 01? said: controlling link is pivotedat 652 to the extension'fi' lt 'of the legrest' 644 pivoted to the seat at64fi. Thus, said guiding link 642 also controls the movements of the leg-rest (WI through themedium of its extension 656 and the-controllinglink 650;

The stop 614 limits-the sitting positionand the step 558- lim-its the extreme reclined position of the movable members of; the chair.

The movable members may be held in any desiredposition by means of the locking devic 660. i

While according to Fig, 1-0; the extension 656 of the guidinglink is rigidly connectedwith the main body of the guidinglink; 642-, one end of the extension 156 of the guiding link'l' 42- shown in Figs.- ll and 13 is pivoted tpthe guiding link at H6: The other end of the extension [56 is pivoted at 154 to one end of the controllin link 150-, the'other end of which is piYQt d at 152 to the extension M8 of the leg-rest 144 swingably mounted onthe seat 128' at 146.; The lower end of the guiding link T42 is pivoted at 126 to the p o o s wn). ndh upp r d said guiding" link M2 is pivoted at 1531 to the front connecting link 1'36 piyot'ally connected with the seat I28 at M9; The seat 128 and the front connecting link 7-36 may form members of any of the polygonal link-systems disclosed in Figs. 1 and 5-10. v

'Theextension 156 of the guiding link is provided with a longitudinal guiding slot- TIB: According to Figs. ll 13-, the guiding link 14-2 is provided with a guiding slot 180 having a recess 182 in register with the lower end of the slot 156' when the extension'lkifi of the guiding link is in the position'shown in full lines inFig. 11. An adjusting screw generally indicated by l -84 passes through both slots ll-8 and 180; The head 186 of the screw'lt i rests against the surface of the guiding link M2, and a square portion i88- oi the screw in slidable engagement with the slot I80 prevents the screw from rotation when an adjusting knob 190 is screwed on the threaded end of the adjusting screw. When the adjusting screw 184 is tightened, the extension 156, of the guiding link is held in a predetermined position relative to the main body of the guiding link T42. When the adjusting screw is loosened, the extension T56 may be freely moved relative to the main body of the guiding link- 54-2; about its pivot H6, and, during such a movement, the adjusting screw 78-4 slides along the slots H8 and F80. v

When the extension 156 of the guiding link is One end of a controlling link- 6504s in alignment with the guiding link [42 in the position shown in full lines in Fig. ll, the extension abuts against a stop F92 secured to the guiding link M2 by suitable means; for example screws. Said stop 192, may cause a simultaneous movement of the guiding link 'HiZand the extension 156 of the guiding link when the guiding link is swung about its pivot ('25 and the adjusting screw 184 is not tightened. Furthermore, the extension 156 and the guiding link M2 are locked in. a i nm nt w h. each th r. n e adjusting screw 184. is displaced into the recess T82 of the slot 180 and into the end of the, slot "8 re istering with said. ece s As will be readily understood from Fig. 11, the leg-rest, 144 may be brought into. a different position relative to the seat 128, for example the position 1-44 by swinging theextension 156 about its pivot 1-16, for example into the position 156-", after a loosening of the adjusting screw 1-84. Now, when the adjusting screw is tightened in the position 184, the extension of the guiding link and the guiding link are rigidly connected with each other, so that the leg-rest is held in the position 144. Upon a movement of the guiding link 142 about its pivot 726, for example by a corresponding movement of the back-rest forming a member of the polygonal link-system including the guiding link as described above, the leg-rest is swung about its pivot 146 starting from the position 144", until the movable members of the chair are locked, when the controlling link [50 comes into alignment with the leg-rest 1-44, In such a self-locking position of the movable members of 5 the chair, the backrest and seat have not yetreached their extreme reclined position. If it is desired to bring the back-rest and seat into their extreme reclined position, the adjusting screw P84 is' loosened, whereupon the extension I56 of the guiding link abuts against the stop 792' under the weight of the leg-rest and the load acting thereon. Now, the back-rest and seat may be brought into their extreme reclined-position, and, at the same time, the leg-rest isbrought into its normal extreme reclined position by the guiding link 1G2 acting with its stop 192 on the extension'lSG of the guiding link connected with the extension I48 of the leg-rest 144 through the controlling link 150.

According to Fig. 11, the extension 156 of the guiding link is pivoted to an intermediate point H6 oi the guiding link 142. If desired, however, said pivotal connection between the extension 156- and the guiding link M2 may also coincide with the pivotal connection of the guiding link with a connecting link of the polygonal linksystem.

According to the embodiment shown in Fig. 14, a controlling element 856 is swingably mounted on the guiding link 842 at 816. Said swingable controlling element 856 does not project outside the polygonal link-system including, for example, the topconnecting link 83 1, the front connecting link 836, and the seat 823, and, consequently, does not form an extension'of the guiding link 842. However, the functions of said swingable controlling element 856 pivoted at 854 to one end of the controlling link 850, the other end of which is pivoted at 852 to the extension 848 of the leg-rest 844, are substantially the same as the functions of the swingable extension 1-56 of the guiding'link shown in Fig. 11. The controlling mechanism shown in Fig. 14 is also equipped with an adjusting screw 884 passing through the slot 818 of the swingable controlling elements 856 and the slot 880 oi the guiding link 842. Furthermore, again an abutment 892 is secured to the guiding link 842 for engagement with the controlling element 856.

I haveshown certain embodiments of polygonal link-systems controlled by a guiding link. According to the invention, the movements of the leg-rest are also controlled by said guiding link through the medium of a controlling link. It is understood, that said controlling mechanism of the leg-rest may also be applied to chairs having'a polygonal link-system controlledby a guiding link wherein, however, said polygonal link-system is of a somewhat different construction.

I have described preferred embodiments of my to said intermediate connecting link 312. The lower end of said front connecting link 336 is pivoted to the seat 328 at 340. Thus, th pivotally interconnected seat 328, the back-rest 330, the link-chain composed of the top connecting link 334, of the intermediate connecting link 312 and of the front connecting link 336 form a quinquelateral link-system, which is swingably mounted on the support 326 at 332 for movement about a single axis. Tht movements of said quinquelateral link-system ar controlled by said guiding link 342 pivoted to the support at 326 and including the intermediate connecting link 312 of the link-chain as mentioned above. It is to be understood, that, if desired, the guiding link and intermediate connecting link could be made of two separate elements which are rigidly connected with each other by suitable means, for example screws.

The leg-rest 344 swingably mounted on the seat 328 at 346 has an upper extension 348 pivotally connected at 352 with one end of a controlling link 350. The other end of said controlling link 3511 is pivoted to an intermediate point of the guiding link 342 at 355. When th movable members of the chair are moved from one position into another one, the guiding link 342 controls the movements of the members of the quinduelateral link- system 326, 330, 334, 312,

336, and the movements of the leg-rest 344. The

sitting position limited by a stop 314 arranged on the support 326 is shown in full lines, and the extreme reclined position limited by a stop 358 mounted on the support 326 is shown in dash and dot lines.

The removable members of the chair may be held in any desired position by means of a looking device 366 of the type shown in Fig. 2 or of any other suitable construction.

The support 426 of the chair shown in Fig. 8 is made of an integral piece of tubular material bent in a suitable manner. The pivotally interconnected seat 428, the back-rest 436, the linkchain composed of the top connecting link 434; the intermediate connecting link 412 and the front connecting link 436 form a quinquelateral link-system, which is swingably mounted on the support 426 at 432 and corresponds to the quinquelateral link-system of the chair shown in Fig. 7. Furthermore, again, the intermediate connecting link 412 represents a portion of a guiding link 422 pivoted to the support 426 at 426, which controls the movements of the quinquelateral link-system.

456 indicates an element, which may be considered an extension of the guiding link 442 projecting outside the quinquelateral link-system. According to Fig. 8 the extension 456 is inte ral with the guiding link 442, a portion of which represents the intermediate connecting link 412, but of course the extension 456 and the guiding link 442 could be made of separate pieces of material, rigidly connected with each other in any suitable manner. One end of the controlling link 456 is pivoted to the extension 456 of the guiding link at 454, the other end of said connecting link 456 is pivoted at 452 to the extension 448 of the leg-rest 444 pivoted to the seat 428 at 446.

As will be readily understood, the guiding link 442 controls the movements of the quinquelateral link-system and of the leg-rest. The movable members of the chair may be held in any desired position by means of the locking device 460, the sitting position is limited by the stop 414, and the extreme reclined position is limited by the stop 458, both stops being arranged on the support 420.

According to Fig. 9 the support 526 comprises two side frames 52l connected with each other by cross bars 523. The rear end of the seat 528 is pivoted to the support 520 at 53] and the lower end of the back-rest 530 is pivoted to said support at the point 533 spaced from the pivotal connection 53l between the seat and the support. The rear end of the top connecting link 534 is pivoted to an intermediate point of the backrest 530 at 535. The other end of said top connecting link 534 is pivoted at 543 to one end of an intermediate connecting link 512. The other end of said intermediate connecting link 512 is pivoted at 543 to the upper end of the front connecting link 536, the lower end of which is pivoted to the seat 528 at 546. Thus, the movable back-rest 530, the movable link-chain composed of the three connecting links 534, 512, 536, the movable seat 528 and the stationary portion of the support 526 between the pivotal connections 53l and 533 of the seat 526 and the back-rest 530 with the support 526 form the members of a hexagonal link-system. The upper end of a guiding link 542 is rigidly connected with the intermediate connecting link 512, and the lower end of said guiding link is pivoted to the support at 526.

The extension 548 of the leg-rest 544 pivoted to the seat 528 at 546 is pivotally connected with one end of the controlling link 550 at 552. The other end of said controlling link 550 is pivotally connected to an intermediate point of the guiding link 542 at 555.

When the back-rest 530 is swung about its pivot 533, the movements of the movable members of the hexagonal link- system 528, 520, 530, 534, 512, 536 and the movement of the leg-rest 544 are controlled by the guiding link 542 so that, for example, the movable members of the chair are brought from the sitting position limited by the stop 514 into the extreme reclined position limited by the stop 558.

The movable members of the chair may be held in any desired position by means of the locking device 560.

In the embodiment shown in Fig. 10 the support 620 comprises two side frames 62l connected with each other by cross bars 623.

The rear end of the seat 628 is pivoted to the support at 63l. The lower end of the back-rest 630 is pivoted to the support at the point 633 at a slight distance from the point 63 I The rear end of the top connecting link 634 is pivoted to an intermediate point of the back-rest 636 at 635. The other end of said top connecting link is pivoted at 638 to the upper end of the front connecting link 636. The lower end of said front connecting link is pivoted to the seat 628 at 646. Thus, the stationary portion of the support 620 between the pivots 631, 633, the movable backrest 630, the link-chain composed of the movable top connecting link 634 and the movable front connecting link 636. and the movable seat 628 form the members of a quinquelateral linksystem. The movements of the movable members of said quinquelateral link-system are controlled by a guiding link 642, the lower end of which is pivoted to the support at 626 and the upper portion of which is pivoted to an intermediate point of the front connecting link at 631.

The upper end of said guiding link 642 has an extension 656 projecting outside the quinquelateral link-system. Said extension 656 is rigidinvention, but it is understood, that this disclosure is for the purpose of illustration, that the invention may also be applied to various other types of articles of furniture such as garden chairs, chairs for use in railroad cars, chairs for use in airplanes, sofas, loungets, etc., and that various omissions and changes in shape, proportion and arrangement of parts, as well as the substitution of equivalent elements for those, herein shown and described, may be made without departing from the spirit and scope of the invention as set forth in the appended claims.

What I claim is:

1. An article of repose for supporting the body of a person, comprising in combination: a support, a constrained linkage having stationary link-means and a plurality of movable links, said stationary link-means being included in said support, said movable links including a seat-member, a back-rest-member, a guiding link and a chain of connecting links including a top connecting link at one end of the chain and a front connecting link at the other end of the chain, at least one of said connecting links being arranged above the plane of the seat-member, the lower end of said guiding link being pivoted to said support, the upper end of said guiding link being connected with at least one of said connecting links, said top connecting linkbeing pivoted to an intermediate point of the back-rest-member, said front connecting link being pivoted to the front portion of said seat-member, means pivotally connecting at least one of said backrest and seat-members with said'support, a legrest swingably mounted on the front portion of said seat-member, and a controlling link, one end portion of said controlling link being pivoted to the body of said guiding link, the other end portion of said controlling link being pivoted to the structure of said leg-rest.

2. An article of repose for supporting the body of a person, comprising in combination: a support, a constrained linkage having stationary link-means and a plurality of movable links, said stationary link-means being included in said support, said movable links including a seatmember, a back-rest-member, a guiding link and a chain of connecting links including a top connecting link at one end of the chain and a front connecting link at the other end of the chain, at least one of said connecting links being arranged above the plane of the seat-member, the lower end of said guiding link being pivoted to said support, the upper end of said guiding link being connected with at least one of said connecting links, said top connecting link being pivoted to an intermediate point of the back-rest member, said front connecting link being pivoted to the front portion of said seat-member, means pivotally connecting at least one of said backrest and seat-members with said support, a legrest swingably mounted on the front portion of said seat-member, and a controlling link, one end portion of said controlling link being pivoted to an intermediate point of the guiding link between its connections with the connecting link and the support, the other end portion of said controlling link being pivoted to the structure of said leg-rest.

3. An article of repose for supporting the body of a person, comprising in combination: a support, a constrained linkage having stationary link-means and a plurality of movable links, said stationary link-means being included in said support, said movable links including a seatmember, a, back-rest-member, a guiding link and a chain of connecting links including a top connecting link at one end of the chain and a front connecting link at the other end of the chain, at least one of said connecting links being arranged above the plane of the seat-member, .one end of said guiding link being pivoted to said support, the other end of said guiding link being connected with at least one of said connecting links, said top connecting link being pivoted to an intermediate point of the back-rest member, said front connecting link being pivoted to the front portion of said seat-member, means pivotally connecting at least one of said back-rest and seat-members with said support, a leg-rest swingably mounted on the front portion of said seat-member, and a controlling link, one end portion of said controlling link being pivoted to an intermediate point of the guiding link between its connections with the connecting link and the support, the other end portion of said controlling link being pivoted to the structure of said leg-rest.

4. An article of repose for supporting the body of a person, comprising in combination: a support, a constrained linkage having stationary link-means and a plurality of movable links, said stationary link means being included in said support, said movable links including a seat member, a back-rest-member, a guiding link and a chain of connecting links including a top connecting link at one end of the chain and a front connecting link at the other end of the chain, at least one of said connecting links being arranged above the plane of the seat-member, one end of said guiding link being pivoted to said support, the other end of said guiding link being connected with at least one of said connecting links, said top connecting link being pivoted to an intermediate point of the back-rest-member, said front connecting link being pivoted to the front portion of said seat-member, means pivotally connecting at least one of said back-rest and seat-members with said support, a leg-rest swingably mounted on the front portion of said seat-member, and a controlling link, one end portion of said controlling link being pivoted to the body of the guiding link, the other end portion of said controlling link being pivoted to the structure of said leg-rest.

ANTON LORENZ.

REFERENCES CITED The following references are of record in the file of this patent:

UNITED STATES PATENTS Number Name Date 652,801 Moore July 3, 1900 2,234,266 Luckhardt et al. Mar. 11, 1941 2,353,838 Lorenz et al. July 18, 1944 2,472,854 Lorenz June 14, 1949 2.4741265 Lorenz June 28. 1949

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