US2066630A - Seat structure - Google Patents

Description

Jan. 5, 1937.

H. s. VLEADER ET AL SEAT STRUCTURE Filed May 20, 1935 5 Sheets-Sheet l Hubert 5. Leader Henry 7 fi orclr'nark INVENTOR.

A TTORNEYS.

Jan. 5, 1937- H. s. LEADER ET AL 2,066,630

SEAT STRUCTURE Filed May 20, 1935 Q 3 Sheets-Sheet 2 :nhflbrf 5 Leader He 71 ry J )Vordmark INVENTOR.

A TTORNEYS.

Jan. 5, 1937.

H. s. LEADER ET AL SEAT STRUCTURE Filed May 20, 1955 3 Sheets-Sheet 5 Hubert 3. Lader Henry F? A/ardmark INVENTOR.

A TTORN E YS.

Patented Jan. 5, 1937 Rapids, Mich, assigncrs to American Seating Company, Grand Rapids, IWich a corporation of New Jersey Application May 20, 1935, Serial No. 22,379

2 Claims.

The instant invention relates to seat structures and more particularly to chairs especially adapted for use in motor buses, airplanes, railway coaches and street cars.

The primary objects of the present invention are to provide a chair of the character above indicated which is light in weight yet sufficiently rugged and sturdy in construction to stand up under the normally hard use required of a chair of a common carrier; to provide such a chair Whose back may be adjustably tilted for patron comfort; to provide such a chair whose chair width may be conveniently varied; and, to pro vide such a chair which is attractive in appearance, comfortable in use and economical in manufacture.

An illustrative embodiment of the invention is shown in the accompanying drawings, whereinz- Figure 1 is a front perspective View of a double chair, the fragmentary portion of the back therein disclosed preferably being of the character shown and described in our copending application, Serial No. 22,378, filed May 20, 1935.

Figure 2 is an enlarged fragmentary sectional View of the inside end of the chair on line 22 of Figure l and showing the operating mechanism by which the back may be tilted and maintained in adjusted position;

Figure 3 is a sectional view thereof on line 3--3 of Figure 2;

Figure 4 is a sectional view on line di of Figure 2;

Figure 5 is a sectional view on line 55 of Figure 2;

Figure 6 is a fragmentary view of the adjustably tiltable chair back frame;

Figure 7 is a sectional View thereof on line l-? of Figure 6, the double ended arrow indicating the tilting movement of the chair back;

Figure 8 is a sectional View on line 83 of Figure 3 and showing the operating lever for controlling the tilting movement of the chair back swung in one'of its operating directions; and

Figure 9 is a sectional view on line 9-Q of Figure 3 showing the operating lever controlling the tilting movement of the chair back swung in its opposite operating direction.

Referring then to the drawings in which like parts of the chair structure there shown are designated by the same numerals in the several views, and new particularly to Figure 1, a pair of spaced horizontally disposed tubular members Ni, ii respectively forming the forward and rearward members of the seat supporting frame are each supported above the floor by tubular legs 12 whose upper ends are provided with tubular T-sleeves l3 which rigidly embrace the members H), II near their several respective ends.

Struts i having T-sleeves 5 at their respective opposite ends which rigidly embrace the respective pairs of front and rear tubular legs i2 medially of their lengths are provided for strengthening purposes.

The outer ends of the forward and rearward tubular members til, M respectively are further secured together in spaced relation by outer transverse members it and a pair of inner transverse members if likewise connect the forward and rearward members id, ll together substantially medially of their lengths, the several pairs of members it, if forming a pair of adjacent seat supporting frames.

The respective outer ends of the tubular members iii, l i are further provided with U-shaped arm rests l8 and both seat frames thus formed by the several pairs of members it, il' are provided with a U-shaped back frame E9 of tubular construction, the ends 28 of each tubular back frame being bifurcated and tiltably secured to the rearward tubular member if in any suitable manner as by the bolts 25 as best shown in Figures 2, 3, 6 and 7.

Each of the transverse members it, I! is here shown as provided with a longitudinal slot 22 as best shown in Figure 3 and pairs of arcuate links 23 pivotally connected at their rear ends to the opposite outer sides of each chair back 59 and extending forwardly on the outer sides of the members it, ii are secured together by a tie rod 24 extending through the slot 22 of the respective transverse members it and ill.

A pair of arms 25 for each seat frame respectively pivotally secured at their rear ends to the insides of the. transverse members it, ll and extending forwardly longitudinally therewith are provided with depending tie rod engaging teeth 26 medially of their lengths. A pair of levers 2'! for each seat frame respectively pivotally secured to the transverse members it, i 7 respectively and below the free ends of the arms 25 are secured together by a tie rod 28 and an operating handle 29 secured to one of the levers 21 when manually swung in either direction as indicated in Figures 3 and 9 causes the arms 25 to simultaneously tilt upwardly for selectively effecting engagement of the tie rod 24 with one of the teeth 26 of its adjacent arms.

A coiled contraction spring 38 as best shown in Figure 2 normally urges the arm 25 downwardly and a coiled contraction spring 3| as best shown in Figure 3 normally urges the chair back forwardly. Slotted spacer blocks 32 as best shown in Figure 3 are interposed between the arms 25 and transverse members I6 or H and through whose slot the tie rod 24 is permitted to shift during the adjusted tilting movement of the chair back.

Upholstered backs 33 and head rests 34 may be secured to the U-shaped back frames IS in any suitable manner, a ready and convenient installation being shown and described in our co-pending application Serial No. 22,378, filed May 20, 1935. The tiltable back of the chair structure herein shown and described can of course be operated through one link 23, one arm 25 and by one lever 2'! in which instance the tie rod 24 may be in the form of a projecting lug.

It will thus be seen that the chair structure herein shown and described is particularly well adapted for its intended use, its back may be adjustably tilted by a movement of the lever operating handle in either direction, the chair width may be conveniently varied and the chair structure is attractive in appearance, comfortable in use and is economical in manufacture.

While but one specific embodiment of this invention has been herein shown and described, it will be understood that numerous details of the construction shown may be altered or omitted without departing from the spirit of this invention as defined by the following claims.

We claim:

1. In a chair structure of the class described, a rectangular seat supporting frame comprising a pair of oppositely disposed side members each provided with a longitudinal slot and a forward and rearward member connecting the side members in spaced relation, a tiltable chair back pivotally mounted upon the rearward member, a pair of spaced links each pivotally connected at its rear end to opposite sides of the chair back and each extending forwardly on opposite sides of a side member of the seat frame, the links being tied together by a tie rod whose opposite ends extend through the respective longitudinal slots of the side members, a pair of spaced arms each pivotally connected at its rear end to a side member of the seat frame on a side thereof opposite a link and each extending forwardly longitudinally of its adjacent side member, each arm having tie rod engaging teeth, a pair of spaced levers each pivotally connected to a side member of the seat frame and below the free end of an arm, a tie rod interposed and secured between said levers, and a handle connected with the tie rod adapted to be manually rocked for rotating the tie rod whereby said spaced arms may be caused to be tilted simultaneously to permit selective engagement of the link tie rod with the teeth of the spaced arms.

2. In a chair structure of the class described, a rectangular seat supporting frame comprising a pair of oppositely disposed side members each provided with a longitudinal slot and a forward and rearward member connecting the side members in spaced relation, a tiltable chair back pivotally mounted upon the rearward member, a pair of spaced links each pivotally connected at its rear end to opposite sides of the chair back and each extending forwardly on opposite sides of a side member of the seat frame, the links being tied together by a tie rod whose opposite ends extend through the respective longitudinal slots of the side members, a pair of spaced arms each pivotally connected at its rear end to a side member of the seat frame on a side thereof opposite a link and each extending forwardly longitudinally of its adjacent side member, each arm having depending tie rod engaging teeth, a pair of spaced levers each disposed below the free end of an arm and each pivotally connected to a side member of the seat frame, a tie rod interposed and secured between said levers, and a handle connected with the tie rod adapted to be manually rocked for rotating the tie rod whereby said spaced arms may be caused to be tilted simultaneously to permit selective engagement of the link tie rod with the teeth of the spaced arms.

HUBERT S. LEADER. HENRY P. NORDMARK.

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