US1803063A - Reversible seat or chair - Google Patents

Description

April 28. 1 c. R. HULTGREN REVERSIBLE SEAT OR CHAIR Filed Dec. 14. 1928 2 Sheets-Sheet 1 4 April 28, c. R. HULTGREN REVERSIBLE SEAT DR CHAIR Filed Dec. 14, 1928 2 Sheets-Sheet 2 Patented Apr. 28, T2931 ominLEsn. HUL'IGREN, or CHICAGO, rumors, assienon. T s. K RrE CHICAGO, rumors, A CORPORATION or wnsr VIRGINIA FFIC REVERSIBLE SEAT ,OR

Application filed December 14,1828. serial 1 To. 326,123.'

This invention relates particularly to a seat adapted for use in railway coaches, or the invention may be usefully employed else where. p

The primary object is to provide a: seat adapted for use in railway coaches,for example, which can be reversed, and which, in the operation of reversing the'seat, will be laterally shifted.

Such a construction and mode of operation enables a double seat fixed to the floor of a railway coach to be pivotally turned in efiecting reversal and to be shifted to give the neeessary clearance in turning. I

The invention is illustrated in a preferred embodiment in the accompanying drawings, in which 7 Fig. 1 is a side elevational view of a seat embodying the invention; Fig. 2, a broken plan view of the seat, the dotted lines indicating one position the seat may assume: in turning; Fig. 3, a broken vertical sectional view on an enlarged scale taken as indicated at line 3 of Fig.1; Fig. 4, a bro-ken plan view '25 of a plate and attaching bars with which the bottom of the seat-structure is equipped, the view being taken as indicated at line 4: of Fig.3 and Fig. 5, a plan sectional view taken as indicated at line 5 of Fig. 3. p Inthe preferred construction shown in th drawings, A designates a base whichmay be fixedly secured to a floor; B, a seat structure having a frame B" equipped at-its lower side with a plate 13 from which depends a rigidly attached post B which is equipped at its lower end with a rigidlysecured cam B and C, locking mechanism adapted to secure the seat in various positions, as desired.

The base A is shown as consisting of a boxlike structure comprising a peripheral wall 1, a top plate 2, and an internal lower plate 3. The member 1 maybe formed from heavy sheet metal by a suitable stamping operation and is preferably provided with an enlarged base portion 1 forations 1 1 The top plate 2 preferably is spot-welded to an inturned flange with which the member 1 is provided at its upper edge. The plate 3 is entered from the lower open end of the box and bearsagainst lugs 1 which are struck inwardly from the peripheral wall of the member 1 The plate 3 is spot-welded to the member 1, as indicated at 3".

having screw-receiving per The seatB forms a part of the superstrucv ture of a-chair, which is shown provided with a back 4 and arms 5. The seat illustrated is a double seat, suitable forthe occupanc of two passengers. a The section shown in F 3 is parallel with the-front of the seat, or coincident with the long axis of the seat.

The bottom frame B" of the seat has attached theretocross-bars 6, and the endsof the plate B are'secured to said cross-bars by means of rivets 7. The bars are shown at- & Bnos.,.oF

tached to the rails of the bottom frame 13 by means of screws 8 as shown in'dotted lines) The post, or heavyvertical stud, B has its upper end received in a. socket 9 which is secured to the upper surface of the plate B as by meansof rivets 9. Akey, or pin, 10

secures the upper end'of the post to the socket. The plate B preferably is provided at its lower side with ribs, or corrugations, 11 which bear upon the plate 2. These ribs are intended to reduce friction in the movement of the plate B upon the plate 2. In Fig. 4:,

the grooves corresponding with the corrugaa tionsmentioned are designated 11*. e

The post B? is'capable ofbeing turned with the superstructure of the chair and of being shifted from the central position shown in Fig. ,3 to an eccentric position, and back. The post. is guided in the shifting operation by slots 2 and 8 with which the plates 2 and Y 3 are provided, respectively. 7

The cam B is provided with a central perforation Which receives the lower end of the post, or shaft, B The cam is keyed to the lower end of the post by means of a pin 12.

The plate 3 is provided at some distance from the center of the base with a fixedly secured stud 13 equipped with a cam-roller 13 which engages the groove 14 of the cam B The cam-roller serves to shift the came B and thus cause the shifting of the post B and through the medium thereof, of the superstructure of the chair when the chair is pivotally turned or revolved.

In the illustration given, the cam 13 is shown as of general elliptical shape, and the, groove 14: is of general elliptical shape. This permits complete revolution of the superstructure of the chair upon the base A, and is the preferred construction.

The seat-carried plate B is shown provided with perforations, .or sockets, 15 and 15. The seat-locking mechanism C is shown as comprising a vertical locking-plunger 16 which extends through guide-perforationsin theplates 2 and 3; spring 17 confined between the plate. 3 and a collar 17 on the plunger 16 and serving to throw the plunger to the locking position; and a foottreadle 18 which extends through a slot 19 in the base A and has it inner end connected, by a pivot 20, to a stud 21 which is fixedly secured to and depends from the plate 3. The lower end of the plnnger 16 is connected with the foottre'adle bymeans of apin 22.. When the seat is in the position shown in Fig. 1, or when the seat is completely reversed from that poition' (at an angle of 180), the plunger 16 enters oneof the perforations 15. When the seat is turned to an angle of 90 from the position shown in full lines in the drawings, the plunger 16 engages one of the sockets '15.

It will be noted that the cam-plate B bears against the lower surface of the plate 3. The cam-plate therefore serves in holding the plate B of the seat-frame closely against the top wall 2 of the base A, thus preventing tilting: of the chair-structure;

In operating the device, the operator steps on the foot-pedal C. He then grasps the back of the chair and exerts a turning force upon the super-structure of the chair, thus causing the cam-equipped post B to turn. The cam-groove slides upon. or follows the roller 13, thus causing the post B to shift in the slots 2 and 3*, thus giving a movement of translation to the super-structure of the chair. The turning operation may be halted when the chair is at right angles to the position shown in full lines of the drawings, such position corresponding with the dotted position of the cam 13*, shown in Fig. 5; or the chair may be turned 180 to efifect complete reversal, that is, to reverse the direction .in which the chair fronts. a

In practice, the chair may be swung in either direction in effecting reversal, which is an advantage.

The construction and mode of operation provide for the shifting of the chair while it is being turned. Thus, the chair is capable of moving away from the side wall of the car so as to have suificient clearance to permit turning.

It may be added that the present invention permits grouping three double seats in a car, if desired. For example, two seats may beset to face each other, and an intervening seat may be set at right angles to the other two seats and facing the window.

A modification of the present invention which provides for oscillating the chair to an angle of 180 and then back is disclosed in my application -Serial No. 3%,933, filed December 10, 1928. In said modification, as well as in the present construction, provision is made for the turning or pivotal movement of the chair about a vertical axis, coupled with shifting. In theconstruction described in the present application, provision is made for complete revolution of the chair, coupled with a shifting action.

The foregoing detailed description has been given for ciearness of understand ing only, and no unnecessary limitations should he understood therefrom, but the appended claims should be construed as broadly as permissible, in view of the prior art.

lVhatI regard as new, and desire to secure by Letters Patent, is:

1. A .device of the character set forth, comprising: a base equipped with spaced guidemembers; a chainstructure movably mounted on said base and having its seat-frame equipped with a depending post movable in said spaced guide-members; a cam-plate secured to the lower end of said post and bear? ing upwardly against the lower guide mem her; and a camrstud secured to the. lower guide-member and co-acting with said cam plate.

2. A device of the character set forth, coma prising: a hollow base equipped with a top wall and a lower inner wall spaced therefrom, said walls being provided with guide-slots; a chair structure mounted on said base and equipped with a rigidly secured post depending through said guide-slots a slotted camplate rigidly secured to the lower end of said guide-post and bearing against the lower side of said lower wall and a cam-stud mounted on said lower wall and engaging the slot of said cam-plate. V I

3. A device of the character specified in claim 2, characterized by means for locking the chair-structure to the base in either-of two positions separated by 180, or in an intermediate position at right angles thereto.

4. A device of the character set forth, comprising: a. hollow base equipped with a top wall and a lower inner wall spaced there from, said walls being provided with guideslots; a chair-structure mounted on 'said'base and equipped with a rigidly secured post depending through said guide-slots; a slotted cam-plate rigidly secured to the lower end 01'; said guide-post and bearing against the lower side of said lower wall; a cam-stud mounted on said lower wall and engaging the slot of said cam plate, and means for locking the chair-structure against displacement relative to the base. A

5. A device of the character set forth, com prising: a hollow base equipped with a top Wall and a lower inner wall spaced therefrom; a chair-structure mounted on said base and equipped with rigidly secured posts .eX- tending through said walls; a slotted cam plate rigidly secured to the lower end of said guide-post and bearing against the lower side of said lower wall; a cam-stud on said lower wall and engaging the slot of saidcam plate; and means for locking the chair-structure to the base in either of two positions separated by 180, or in an intermediate position.

6. A device of the character set forth comprising: a hollow base equipped with a top Wall and a lower inner wall spaced therefrom, said walls being provided with guide slots; a chair-structure mounted on said base and equipped with a rigidly secured post depending through said guide-slots; a slotted cam plate rigidly secured to the lower end of said guide-post and bearing against the lower side of said lower Wall; a cam stud mounted wall and engaging said cam for shifting said chair-structure relative to said base.

10. A structure of the character set forth, comprising a hollow base having a top wall and a lower inner wall, said walls being pro vided with guide-slots; a chair-structure mounted on said upper wall; a guide-post 011 said lower wall and engaging the slot of said cam plate; and mechanism carried by said lower wall for locking said bearingstructure against displacement relative to said base.

7. A structure of the character set forth, comprising: a hollow base having spaced walls; a chair-structure pivotally mounted on said base and having a bearing plate c0- operating with one of said spaced walls; and means carried by the other of said spaced walls for locking said chair-structure against displacement relative to said base.

8. A structure of the character set forth; comprising: a hollow base having spaced walls; a chair-structure shiftably and pivotally mounted on said base and having a bearing plate cooperating with one of said spaced Walls; means'carried by the other of said spaced walls for locking said chair-structure against displacement relative to said base; and means for shifting said chair-structure relative to said base when said chairstructure is revolved.

9. A structure of the character set forth, comprising: a hollow base having a top Wall and a lower inner wall; said walls being provided with guide-slots; a chair-structure mounted on said upper wall; a guide post carried by said chair-structure and projecting through said guide slots; a cam secured to said post; and means carried by said inner

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