US1520222A - Chair - Google Patents

Description

Dec. 23, 1924. L. w. BROWN CHAI'R Filed Nov. 3

Patented Dec. 23, 1924.

warren stares LEWIS W. BROWN, OF ST. LOUIS, MISSOURI.

CHAIR.

Application filed November T 0 all whom it may concern.

Be it known that I, Lnwrs 1V. Brown, a citizen of the United States, residing at the city of St. Louis and State of Missouri, have invented new and useful Improvements in Chairs, of which the following is a specification, reference being had to the accompanying drawings.

My invention relates to improvements in chairs, and more particularly to reclining chairs wherein the chair back may be swung and held at selective angles relative to the chair seat, and my invention consists in the novel construction, arrangement and combination of parts as hereinafter set forth, definitely pointed out in my claims and illus trated by the accompanying drawing, in which Figure 1 is an elevation of a chair, constructed in accordance with my invention and embodying my improvements.

Figure 2 is an enlarged detail rear elevation showing fragments of a chair arm and the chair back and the pivotal connection therebetween, as from the point designated 22 of Figure 1.

Figure 3 is an enlarged detail front elevation showing fragments of a chair arm and a supporting member therefor, and the pivotal connection therebetween, as taken from the point designated 33 of Figure 1.

Figure 1 is a transverse, sectional elevation showing a fragment of the seat and its supporting legs, a fragment of the arm supporting member and the pivotal connection between the chair leg and arm supporting member as taken on the line indicated 44 of Figure 1.

Figure 5 is an enlarged detail transverse sectional elevation showing fragments of the seat and a supporting leg and a rack bearing strut, together with a pawl or locking device as taken on the indicated line 55 of Figure 1.

Figure 6 is an enlarged elevation showing fragments of the seat and back and a spring hinge forming a connection therebctween.

Figure 7 is a perspective view showing a fragment of the rack bearing strut, the pawl and the means for moving the strut to release it from the pawl.

Figure 8 is a perspective view showing the means for holding the arm supporting members against lateral movements, and

Figure 9 is a longitudinal sectional eleva- 30, 1921. Serial Ila-513,844.

tion showing an adjustable foot rest attachment for the chair.

Referring by numerals to the drawings, 10 designates the chair seat having the supporting legs 11 the joints of which are immovably articulatedwhereby the seat is held in constant fixed relation to its supporting legs.

The numeral 12 designates the chair back having the terminals of its side rails pivotally connected with the chair seat 10 by means of hinges 13, which by preference, are of the spring actuated type which normally tend to bring its leaves to juxtaposition, whereby the swingingof the chair back relative to the chair seat is facilitated.

At each of its sides the chair is provided with an arm 14 whose rear ends are pivotally secured to the side rails of the back 12, by means of the angle plates 15, and whose forward ends are pivotally secured to the arm supports 16 by means of the angle plates 17, and said supports are secured to the foot legs 1.1 of the chair by means of the swivel plates 18.

In order to hold the arm supports against wabbling on their swivel plates 18, I provide the arcuated, metallic guide straps 19, having fixed relation to the front legs 11, and arranged for traverse by furcated plates 20 fixed to the arm supports.

Fixed to the rear legs 11, at each side of the chair and adjacent the lower, hinged terminals of the chair back 12 is a pawl 21 whose upper free end resides in a plane of greater altitude than the chair seat 10 and occupies a position laterally removed from the chair seat and the side rails of the chair back 12.

Secured to each chair arm 14, as by a hinge 22, is a strut 23, which as shown in Figure 5, is provided with a channel 2 1, open at its bottom, in which is secured a rack bar 25, whose teeth are engaged by the pawls 21. By preference, in order that the rack bar be constantly operatively related to the pawls, I provide a hook 26 at the upper extremity of each pawl and secure over the mouth of the channel 24; a slotted plate 27.

In order to render more facile a movement of the struts 23 to effectselective inclination of the chair back 1 provide a lever 28 at each side of the chair, whose one end is pivotally connected with the chair seat and whose outer free end is arranged for engagement with the strut 23 and whose downward limit of movement is defined by a stop 29 fixed to the chair seat.

The levers 28 are designed for the convenience of a person occupying the chair and are preferably relatively connected as by the rod 80 whereby a manipulation of either lever will effect a like movement of its companion, to the end that there is ob viated a requirement for a manipulation of both the levers.

By further preference the chair is provided with a second strut adjusting means, for the convenience of a person standing to the rear of the chair, such as a companion, nurse or other attendant of the person occupying the chair, which means comprises a rod 31, having a. rocking connection with the rear legs 11, by means such as the straps 82, which rod bears at each end a crank 33 for engagement with the levers 28. Interjacent the cranks the rod 31 bears a lever 34:, to which is secured a rod, or its equivalent, 35, which is secured to the chair back as by a sleeve 36 and which extends toa point near the upper end of the chair back whereat the rod is provided with a manipulative means such as the ring 37.

The chair, if desired, may be equipped with rockers, such as 38, and shown only by dotted lines in Figure 1.

Disposed beneath the chair seat is a frame 39, which is related to the seat and its supporting legs in a manner common to furniture drawers, and which may be bodily withdrawn from beneath the seat, for the exposure of a foot rest 40, which may be swung to an advanced position, as shown by dotted lines in Figure 1 and the frame 39 held in its withdrawn position as by the props 4L1.

IV hat I claim 1. In a chair, a seat frame, a back frame pivoted to the rear of the seat frame for swinging movement, swinging supports pivoted near the front end of the seat frame, arms pivoted to the back frame and to the swinging supports, stationary pawls carried by the seat frame near the rear end thereof and having enlarged engaging ends, bars pivoted at their forward ends to said supports and extending rearwardly at opposite sides of the back frame beyond the seat frame, and having grooves in the under sides thereof for receiving the engaging ends of the pawls, toothed racks fitted in the grooves and adjustably engaged by the pawls, slotted plates fixed to the under sides of the bars and having the pawls working in the slots in said plates for engagement of the latter with the engaging ends of said pawls to limit the displacement of the racks relative to the pawls on the raising of the bars, levers pivoted at their forward ends to the sides of the seatframe and having rear cam ends engaged by the bars, and a tie rod located rearwardly of the seat frame and connecting the levers together for movement thereof in unison to lift bot-h bars when elevating either lever.

2. In a chair of the class described, a chair seat, supporting front and rear legs, said chair seat being immovably secured to said supporting legs, a chair back, a hinge connection between said seat and said back whereby said back may be swung relatively to the seat, arm supports pivotally connected to said front legs, side arms pivotally connected to said arm supports and to said chair back, a pair of pawls secured to said rear legs, a pair of struts pivotally connected to said side arms and arranged for movement with said arms and arm supports, a toothed rack carried by each of said struts for engagement with said pawls, and levers pivotally connected to said chair seat and adapted to engage the free ends of said struts for moving said struts to move said chair back to different inclinations.

3. In a chair of the class described, a chair seat, supporting front and rear legs, a slidable foot rest mounted under said seat for sliding movement between said front legs, said chair seat being immovable secured to said supporting legs, a chair back, a hinge connection between said seat and said back whereby said back may be swung relatively to the seat, arm supports pivotally connected to said front legs, side arms pivotally connected to said arm supports and to said chair back, a pair of pawls secured to said rear legs, a pair of struts pivotally connected to said side arms and arranged for movement with said arms and arm supports, a toothed -ack carried by each of said struts for engagement with said pawls, and levers pivotally connected to said chair seat and adapted to engage the free ends of said struts for moving said struts to move said chair back to different inclinations.

In testimony whereof I hereunto ailix my signature.

LEIVIS IV. BROIVN.

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