US979236A

US979236A - Swinging chair.

Info

Publication number: US979236A
Application number: US46564408A
Authority: US
Inventors: John Thomas Williams
Original assignee: Individual
Current assignee: Individual
Priority date: 1908-12-02
Filing date: 1908-12-02
Publication date: 1910-12-20
Anticipated expiration: 1927-12-20

Description

J T. WILLIAMS.

SWINGING GHAIR.

, APPLICATION FILED DEC. 2', 1908.

Patented De c. 20

lNl/E/VTOR JZ/zn 272077206 Wilz'ams WITNESSES 47TOR/VE VS UNITED STATES PATENT OFFICE.

JOHN THOMAS WILLIAMS, or RENO, NEVADA.

SWINGING CHAIR.

Specification of Letters Patent.

Patented Dec. 20, 1910.

Application filed December 2, 1908. Serial No. 465,644.

The invention is an improvement inswinging chairs, and has for 1ts purpose a chair of. this character having a back adjustable to different inclinations, the back being controlled in its adjustment by the Weight of the occupant on the seat of the chair, suitable locking means being provided to retain the back in substantially any of its positions of adjustment; thus, when the full weight of the occupant is on the seat of the chair, upon releasing the lockingmeans the back is swung forwardly. By relieving the seat wholly or partially of the weight,the back is swung rcarwardly, this last operation being effected by a spring drum having a tape or other flexible member which it normally tends to wind up, and arranged between the front and rear portions of the chair, ordinarily underneath the scat.

The invention further resides in the provision ofa support for the chair which may be readily erected and disassembled.

Reference is to be had to the accompanying drawings forming a part of this specification, in which similar characters of reference indicate corresponding parts in all the views.

Figure 1 is 2. pers ective view of my improved swinging chalr complete; Fig. 2 is a side elevation of the same, parts beingbroken away; Fig. 3 is a section substantially on the line 33 of Fig. 4, looking in the direction of the arrow; Fig. 4 is a section on the line 44 of Fig. 3; Fig. 5 is a detail view of the lock shown in Figs. 3 and 4; Fig. 6 is a fragmentary sectional view of the upper portion of the support and Fig. 7 is a fragmentary View of the front bars of the chair, showing the manner in which the foot-rest is adjusted.

The chair is preferably constructed of front bars 10, backbars 11 and side bars 12 (two for each side), pivotally connected at their points of intersection, the seat and back for the chair being made of a strip of canvas 13 extending from a round 14 between the upper ends of the back bars 11,

over a front seat round 15 to a round 16 between the lower ends of the front bars 10. The lower ends of the back bars -11 are connected together by a round or shaft 17 on the reduced end of which, as best shown in Fig. 4, is journaled a drum 18, with one end of the drum bored for receiving a s iral spring 19,- and provided with a series o circumferential recesses or notches 20, the latter being engaged by a spring-pressed looking bolt 21 sliding within a bearing 22 at- I tached to the inner face of one of the back bars 11. About the drum ,18 is wound a flexible tape 23 which is connected to the forward portion of the chair,- as,- for example, to the round 15. Thebolt 21 is provided with a flexible member or line 2 which passes over the top round 14 of the chair and is in accessible position from the chair seat.

A foot-rest 25 is attached to brackets 26,

as best shown in Fig. 7, which bear on the front and outer faces of the front bars 10 and are longitudinally slotted, with a numberof downwardly-directed notches 27 at the forward edge of the slot adapted to engage over pins 28 projecting from the side bars 10, this construction obviously enabling the foot-rest to be moved to the desired elevation.

' The support for the chair has the usual downwardly-diverging legs 29 at each side, each pair of legs notched at their upper ends to engage over the head of a locking key 30, all 0 which are inclosed within a cast bellcap 31, through which and also-the keys 30 passes a cross-bar 32. upright stud 33 which fits into one of the depending ends of a cross-brace 34:, the latter being constructed of pipe as shown. The chair is suspended from the cross-bar 32 by cables or rods 35, the ends of which are attached to the chair at the connections between the upper side bars 12 with the front and

back bars

10 and 11 respectively. The operator of the .chair desiring to change the inclination of the back, draws on the line 24, which retracts the bolt and re leases the drum 18 from the adjacent side bar 11. By then relieving the seat of a portion of the weight, as by transferring the weight to the foot-rest 25, the back will be moved rearwardly by the sprin of the drum winding up the tape. The bac is moved in the opposite direction by applying the full weight to the seat and giving a lurch forwardly, if necessary. The cable is released as soon as the desired position of the back is back will be immediately taken up by the spring 19. The weight of the user of the chair will tend to swing the up er portion of the back forwardly, but this tendency will be resisted by the tape, and the back will accordingly remain stationar struction of the sup ort ena les this part of the apparatus to e readily taken apart and packed within a smalls ace, b removing the cross-bolt 32 and li ting t e. crossbrace 34 from the stud sup ort. Ordinarily the legs 29 will be provide with detachable cross-braces 36 to further insure the rigidity of the support.

Having thus described my invention, I claim as new and desire to secure by Letters Patent:

1. In a swinging chair, a support comprising headed ke s ownwardly-diverging legs at op oslte si es enga 'ng over the heads of said iieys, bell-caps tting over the upper ends of the legs and the ys, each havlng The conm st an upwardlyrojectin stud, a cross-bar. passing throug the bel -caps and keys, connecting the opposite sides of the support together, and a tubular brace having downwardly-turned ends engaging over the studs of the bell-caps.

2. A swinging chair having front bars and back bars connected together to move' in unison to different inclinations, a flexible member extending between the upper portions of said bars, constituting a seatand back .for the chair and tending under the weight ofan occupant to swing the upper portions of the back bars forwardly, and

JOHN THOMAS WILLIAMS.

Witnesses HARRY FRAY, Greener: DARBY.