Title:
Divan hardware
United States Patent 2395424


Abstract:
This invention relates to a divan construction and particularly to the hardware employed. As is well known, divans are so constructed as to include a seat and a back portion which are selectively movable between two positions. In the first position the back and seat are arranged in a normal...



Inventors:
O'neil, Walter G.
Application Number:
US49071943A
Publication Date:
02/26/1946
Filing Date:
06/14/1943
Assignee:
O'neil, Walter G.
Primary Class:
International Classes:
A47C17/175
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Description:

This invention relates to a divan construction and particularly to the hardware employed. As is well known, divans are so constructed as to include a seat and a back portion which are selectively movable between two positions. In the first position the back and seat are arranged in a normal relationship for seating one or more persons with the back cooperatively adjacent the seat to provide a back rest for persons resting on the seat portion. In the second position the back portion and the seat portion are stably supported in a common horizontal plane to provide a bed on which one or more persons may sleep. Thus the divan serves as a dual purpose furniture unit. During the day it is available for seating and decorating purposes. When one wishes to retire, it is made up as a bed. The divan hardware of this invention is such that the back and seat can be quickly moved between one position and the other merely by grasping the back and moving it without first releasing any locks or levers.

It should be obvious that any divan, to be satisfactory, must include hardware of a simple yet rugged nature which will permit the seat and back portions to be moved readily and which will provide adequate support for the seat and back and, at the same time, have a long life. At this writing metal is not available for divan hardware and it is therefore necessary to construct of wood the parts permitting a manipulation of the seat and back. To accomplish this it is obviously necesary that a simple yet quite rugged construction must be adopted.

It is the general and broad object of the present invention to provide an improved divan hardware construction, particularly one which can be readily fashioned from wood and which is nevertheless serviceable and rugged.

The divan hardware construction embodied in the present invention is made up in sets of two like units except that one is a right hand unit and the other is a left hand unit. Each unit includes two links which are mounted upon a side frame of the divan and extend generally upwardly. The first link is hinged to a plate intermediate the ends of the plate. The second link is also hinged to a second plate and to one end of the first plate.

The first plate provides a support for the divan back and the second plate a support for the divan seat. The inter-connected links and plates support the back and seat on the divan frame; also they permit movement of the back and seat relative to each other. To locate the seat and back in a selected position a latch bar is hinged onto the second plate and is engaged by an extension on the first plate. A selective lock is provided between the extension and the latch bar. This lock is a feature of the present invention inasmuch as it enables the seat and back to be locked in a selected position, the lock being released merely by moving the back without the necessity of manually releasing any locking member. This is a distinct advantage for it is not necessary to grope about the divan to locate any lock or release.

The construction embodied in the present invention will be made further apparent upon considering the following construction which illustrates a preferred construction. In the accompanying drawings forming a part of this specification, Fig. 1 is a side elevation of a unit at the left hand end of a divan, showing the seat and back in seating position, Figure 2 is a section taken along the line 2-2 of Fig. 1 while Fig. 3 shows the several parts in that position in which they appear when the seat and back are arranged as a bed. Figure 4 is a side elevation of a construction utilizing a wooden latch bar. Figure 5 illustrates the position of certain of the parts; of the diven, particularly showing how the pin 31 moves past the snail cam 34 and how the end of the snail cam permits the pin 31 to ride over the snail cam face and along the face of latch bar 26 from the position of the divan in Figure 1 to the position of Figure 3.

Figure 6 illustrates the back and seat at a position which they attain during the movement from the position shown in Figure 1, the seating position, to the bed position shown in Figure 4. In this position the cross pin is still engaged in the notch in the latch bar.

Figure 7 is a fragmentary view illustrating the cross-pin in position after moving the snail-cam out of the way and just before the cross-pin moves along face 42 on the latch bar to permit the seat and back to move into the bed position of Figure 3.

In the drawings, a divan frame side member is indicated at 6. This is the left hand member in a divan which includes the usual rectangular frame usually made of wood. Plates 7 and 8 are secured to the side frame by suitable screws.

The first link 9 is hinged upon the plate 8 as at 10 while the second link 11 is hinged upon plate 7 as at 12. The two links extend generally upwardly, link 9 being secured to the first plate 14 by hinge 16 while link 11 is hinged as at 17 to one end of plate 14 and to one end of the second plate 18. Plate 14 includes an extension 19 adapted to receive and support the back portion generally indicated by numeral 20 and shown in dotted outline and which is secured to plate 14.

An extension 22 on plate 18, which overlies the member 6, is adapted to receive a seat portion 23 and provide a support therefor, the seat also being indicated in dotted outline and being secured to extension 22. The details of the back and seat have not been shown. However, they include suitable members, as is well known in the art, for attachment to their respective supports. They have been indicated 'i dotted lines merly to facilitate the disclosurie. " . With the units as described so far it is possible to manipulate the seat and the back into numerous positions. It is necessary that'theSe be locked in either a seating position or in a position in which the seat and back provide a bed.

To accomplish this I hinge a latch bar 26 on a depending portion 27 of extension 22 as at 28.

The latch bar extends toward the rear of the divan to pass between two members 29 which depend fromi extenisfo I 9." The members 29 are j6inhi' dby' element 31 which rides along face 42 On latclhbar 2" 'and into and out of the aperture generally indicated at 32 in the end of latch bar 26'. When 'the element 3"is 'in the aperture 32, as in Figure 1, the seat and back are locked in seating position with the' latch bar 26 nearly horizontal and extension'22 resting on "member 6- To permit withdrawal of the element, a snail cam 34 is mounted for rotation on pin 36. The lower end 37 of the cam is-of a length to extend below the aperture 32.When it isdesired to move the back from that position in which it appears in Figure 1, the seating position, to the bed position of Figure 3, it is only necessary to pull forward slightly on the seat, Te seat moves forward and the back swings down, links 9 and II and plate 14 supporting the two for a smooth swinging-movement from- that position in which they appear in Figure 1 until :the back is horizontal and the seat is nearly vertical, as shown in Fig. 6. The length of the aperture 32 and the weighting of the snail cam 34, with respect to its support 36 is such that a slight lift on- the seat at this point then suffices to rotate the cam out of the way and permit-element II to pass the cam and come to rest between cam face 38 on the back of the cam and the end face 39 of the aperture as is shown in Figure 7. The seat is then swung back and returned to a horizontal position in which itis in a common plane with the back (Figure 3), ele-' ment: 3, 'riding-over the back face 38 of the cam out of the aperture 32 and along the'latch bar 26. into the position shown in Figure 3. * . When it is desired to return the back and seat to the:seating position of:Figure 1 from the bed position of Figure 3; it is only'-necessary to lift. the forward.edges of the seat. This causes latch 6 bar 26 :to ride along element'31 until t- engages and rocks the cam out of the way whereupon the element enters the aperture and locks as 'in Figure 1. -The back and: seat can then be ro-' tated (counterclockwise in Fig. 3): as a- unit into 6 the seating position shown- iriFigure 1. -.. The weight of the back and seat are so disposed that little effort is required to move them, the'weight of -one assisting ii the movement of the other between one position and another, for 7 when one is being raised the other is being lowered.' Lateral stability and 'elimination of any side sway is secured- by mounting links 9 and 1I on one side of member 6 and providiing latch-bar 26:and extensions 29:on the other side as appears' 7 in Figure 2. Extensions 29 depend below and beyond the back, thus increasing the strength of support for the back.

The snail cam represents a suitably biased lever having a cam surface formed on its lower end and so hinged that locking element 31 can rotate it into a position in which the cam surface enables the locking element to ride out of the slot.

The unit disclosed is partlulaly.: adapted to manilfacture in ither w.o qr itl "If made up in wood the simplest construction is to make latch bar 26 of one piece of wood and provide aperture 32 and face 42 by providing a continuotis slt- in the latch bar 26, as is shown in Figure 4; the upper edge of the slot then corresponds to the lower edge of latch bar 26 in Figure 1.

This ensures adequate strength for that portion of the latch bar 26 providing aperture face 44. ' Those skilled in the art can readily make the various modifications in the specific details "of construction and.arrangement.necess'ary to adapt the hardware to various divans of.-varyifig size.

I-claim: 1. In a device of the character described having opposite parallel.side frame members spaced apart, a seat and a'back, and means for selectively supporting said seat and said back at each end thereof for movement between a first position, in which the badk and seat are disposed in a normal seating position with the seat hodrl zontal 'and the back substantially vertical, and a second position, in which the 'back and eat are disposed. in a substantially comnimn -bhorizontal 3 plane, said'means conirisihg a first link hinged at one end on a side membOer and extending geierally upwardly, a second link hiinged on said side 'member 'arid extendihg generally upwardly, a:first plate hinged intermediate its ends ori the other end of said firs't linik,'6iie-enrd of said first plate being adapted to piovide a" support for said back, a second plate hinged at one end on a com-n mon hinge' with the other etid of said first plate and the other end of .said secondr link, the other end of.said seconid plate:being ad'apted to provide a support, for said seat, a latch ibar hinged at'one end upon and exteniding'from'f said seat support parhalel to aTd :fratiM nme'mber, '"id'la`tch bar having a slot in its o6tier enid, a -snail'cam bscillatably-mounted oi said latch bar cooperatively adjacent said slot, And'ah extension on said first plate movable 'along said'lathi'barf in supportiig engagement therewithl iob sulOppft said seat" and back in said second position an'i iitno selective engagement with 'said slot' to positiobi said seat and" back 'in said first poitifnio, said 'ex'tision1 moving said'carii"to pbiti'ý n it ini a 'guidingpo"sition- wherein said exteisiohifides over said cam and out of said slot to pib'tibon'said back ari-dseat in' said-'edonfd 'positiod', said"firsand i said secoind links"'beihg e"ach 'Hinied -d"on an outsi de face of said side fnember ad isaidlaitch-.r ii-ig along and so closely 'a.djacefit 6 'th iinsideface of said side -mem~er" as 't 'provide lateral stability to the' 5 seat, a -:.: 2. In a device of the character described having opipsite lparallel side: fame ine bers spacd apart, a'seat and 'a back, aind mea ns for se6iectively supporting' gsai-d sat an .i aild back at each. '0 end 'theieof 'foir'' nvenimt beetWe a first posi tion, in whiclh the back"and:'seat are 'disposed in a normal s'eating positi~orvi'th the 'seat hori' zotital iid the' biak sublst: tiall~' .vetiail, and ascd'codd'p ositibn, ii which the ''ack' aid 'sa '5 are diiposed' in "a subs'taitially comm6on horizointal plane, said means comprising a first link hinged at one end on a side member and extending generally upwardly, a second link hinged on said side member and extending generally upwardly, a first plate hinged intermediate its end on the other end of said first link, one end of said first plate having a lateral extension providing a support secured to said back, a second plate hinged at one end on a common hinge with the other end of said first plate and the other end of said second link, the other end of said second plate having a lateral extension providing a support secured to said seat, a portion depending from said seat extension, a latch bar hinged at one end upon and extending from said depending portion parallel to said frame member and beneath said seat, said latch bar having a slot in its other end, a snail cam oscillatably mounted on said latch bar cooperatively adjacent said slot, and an extension on said first plate having a cross-pin engaging said latch bar and movable along said latch bar in supporting engagement therewith and into selective engagement with said slot to position and lock said seat and back in said first position, said crosspin being movable in said slot through manipulation of said seat and back to position it in a guiding position wherein said cross-pin rides over said cam and out of said slot to position said back and seat in said second position.

3. A device as in claim 2 wherein the first and second links are each hinged on an outside face of said member and the latch bar and the first plate extension extend along the inside face of said side member to engage said face and provide lateral stability to the seat and the back.

4. A device as in claim 2 wherein the slot in the latch bar is generally in the form of an equilateral triangle with a portion of one side cut away to permit passage of said extension into and out of said slot, said cam depending from said bar with its lower face generally below the remaining portion of said cut away side to provide a support on which said extension can ride out of said slot.

WALTER G. O'NEIL.