Патент USA US2120341код для вставки
June 14, 1938. 2,120,341 0. N. SMITH TILTABLE CHAIR Filed June 11, 1937 2 Sheets-Sheet 2 J. A / Inventor 0 fVSmz'fé .4 lforncl/s Patented June 14, 1938 , 2,120,341 UNITED STATES PATENT OFFICE 2,120,341 TILTABLE 01mm Orva N. Smith, Berne, Ind. Application June 11, 1937, Serial No. 147,754 4 Claims. (Cl. 155-57) This invention relates to upholstered furniture, and has particular reference to a chair such as is adjustably and tiltably mounted on appropriate supporting means so that the seat is susceptible 5 of being disposed at varied inclinations with re spect to the floor or other supporting surface. The purpose of the invention is to provide a tiltable, shiftable chair and coacting base means making it possible to adapt almost any style or form of a chair for coordination with said base means and to practically transform the complete assembly into a seat whose inclination may be adjusted to suit the occupant and to thereby promote restful comfort. I am sufficiently conversant with the furniture trade and the prior art which comprehends it to appreciate that chairs and equivalent pieces of furniture are equipped with tiltable backs, ad justable seats, and other comforts to accommo 20 date the occupant. My aim is, therefore, to utilize what may be called an ordinary or conventional chair, upholstered or plain, wherein the same can be bodily shifted and tilted to maintain the back rest and seat in the same angular relation 25 with respect to each other, but to vary their position in relation to the ?oor. Other features ‘and advantages will become more readily apparent from the following de scription and drawings. 30 a In the drawings, wherein like numerals are em ployed to designate like parts throughout the views: . ' Figure 1 is what may be called a side eleva tional view of a conventional upholstered chair 35 showing the attached supporting base unit there for constructed in accordance with my ideas. Figure 2 is a sectional and elevational view of the frame work detailing the orderly selected and coordinated features found best to serve the 40 needed purposes. Figure 3 is a view similar to Figure 2 with certain of the features omitted for clearness of illustration of the principle of operation. Figure 4 is a bottom plan view showing the 45 adapter means on one of the side rails of the base frame, that is, the frame of the base of the chair. ' Figure 5 is an enlarged detail vertical section on the line 5-5 of Figure 2; and Figure 6 is an elevational view of one of the leg members of the two-part base imit or support. Referring now to- the drawings by distinguish ing reference numerals, it will be observed that the chair, which is an upholstered conventional 65 type is denoted by the numeral 1. As brought out for better illustrative purposes in Figure 2, the back rest is denoted by the numeral 9 and a seat or base frame is denoted by the numeral 9. The latter part is generally rectangular in form, and in accordance with the present conception, 5 opposed parallel side rails l9 thereof are pro vided with adapter devices to coordinate with _ the duplicate members of the two-part leg equipped base units or members II. The base members are duplicate in construc 10 tion. That is to say, each member or unit ll includes supporting feet 12 vto rest on the floor, and further includes a central riser whose upper curved surface I3 is in effect a seating crown for the chair frame 9. Said part I3 is thus of convex form and functions as a fulcrum for the relatively tiltable and shiftable or slidable bodily adjustable chair 1. In its preferred embodiment, the base member ll is in the nature of a longitudinally bowed leg frame. The central portion of the 20 under side thereof is provided with a keeper notch M to accommodate a binding or retention bolt [5 carried by the chair frame. The adapter means on the chair frame which is associated with the member II by way of said 25 bolt I5 is in two parts. Each part comprises a retaining cleat I6 and an intervening rest or adapter element ll. The cleat I6 is secured by screwsor similar fastenings l8 to the adjacent side rail, said fastenings I8 also serving to hold 30 in place the adapter element IT. The latter part is in the form of a relativelyshort block or equiv alent piece of wood, as vseen in Figure 3. The top thereof is flush with the corresponding top portion of the surrounding frame 9. The lower 35 edge portion is formed with a central clearance notch l9 coacting with the underlying crown I3, and further formed with a pair'of longitudinally spaced and properly curved seating surfaces 29. The curvature of these surfaces corresponds to , 40 the curvature of the crown portion of the base unit ll. Thus, in effect, the unit ll ?ts between the rails I9 and cleat l6, allowing rest I‘! to come down on top of it to provide the desired adjust able shifting and fulcruming coaction between 45 the base unit and chair. It will be noted that the bolt l5 goes through the rail ‘I0 and the cleat l6 ‘(see Figure 5) and also extends through the keeper notch ll. The ends or end walls of the notch 14 constitute 50 abutinents to limit the longitudinal or horizontal shift of the chair in relation to the base members ll. Also, the bolt hole in the cleat I6 is slightly enlarged, as indicated at 2|, to accommodate the . nut and threaded end of the bolt, as indicated 2.. _ 2,120,841 'at 22. The opposite headed end of the bolt, as shown at 23, is rockable in a countersunk recess the curvature of said convexed surfaces corre sponding to the curvature of the under sides of _ in the rails I0, Under this arrangement, the bolt, _said adapter blocks for matching coaction, and when slightly tilted or canted, as shown in Figure 5, obtains a binding contact with the adjacent or top edge portion of the notch _Il, thus locking the chair on the base in any position to which said chair has been adjusted-or tilted, as the case may be. It is thought that the description taken in con nection with the drawings will enable a clear un ‘ derstanding of the invention to be had. There; fore, a more lengthy description is thought un necessary. . . p ‘ a single bolt passing through each cleat and ad jacent portion of the side rail to maintain the parts assembled, said base units being provided with longitudinally spaced stop shoulders with which said bolts coact. - 3. In a structural assemblage of the class de scribed, a base frame including a side rail, ,an 10V adapter block fastened to the inner surface of said rail and having its upper edge ?ush with‘ the corresponding edge of the» rail, said adapter block being of a length considerably less than While the preferred embodiment of the in . saidrail, and the. under side thereof being lon 15 vention has been shown and described, it is to gitudinally curved to provide a concaved fric be understood that minor changes coming within\ tion supporting and tilting surface, a cleat dis the ?eld of invention claimed may be resorted \~ posed ln parallelism with the rail and block and secured to the rail and forming a pocket between ' to if desired. 15 20 ‘ I claim: - I _ 1. In a structure of the class described, a chair including a seat and an associated back rest, said seat embodying a base frame and said frame in ' cluding adjoined side and end rails, cleats fas tened to corresponding inner surface portions" of 25 , the side rails, and adapter blocks interposed be itself and said rail, a longitudinally elongated supporting and tilting unit, said unit having its ‘opposite ends formed into ?oor contacting feet and having its‘ intermediate portion located in the pocket between the rail and cleat, that sur face of the unit underlying said block being lon gitudinally curved to provide a convex support tween the cleats and side rails, the lower edge ing'and friction fulcruming surface, the convexed surface matching the concaved surface of said portion of each adapter block being, longitudi nally curved and the central portion of the curve > block, the intermediate portion of said unit hav 30 including an elongated clearance notch, and a ‘ing formed .therein a notch forming a bolt ac ' pair of base units for supporting said frame, each 30 commodatlon base as well as longitudinally spaced unit being longitudinally bowed'with its bowed stop shoulders, and a'single bolt fastened trans portion disposedbetween the adjacent rail and versely through the rail and cleat and extending cleat and arranged inwmatchlng contact with the through said notch and bridging said pocket in 35 35 curved lower edge portion of the adapter block, the manner and for the purposes described. 4. In a structure of the class described, a chair the lower edge portion of said base unit having a notch therein, and a bolt located ‘in said notch ' including a seat and an associated back rest, said seat embodying a base frame, and said frame and connected with the adjacent cleat and rail. ' 2. In a structure of the class described, a chair . including adjoined side and end rails, 'cleats se 40 including a seat and an associated back rest, said cured to corresponding inner surface portions of . seat embodying a base frame and said frame in said side rails, and adapter blocks interposed be turn including'complemental adjoining side and ‘ tween the ‘cleats and side rails, the lower edge por end rails, ‘duplicate cleats fastened to‘ correspond ing inner' surface portions-of the side rails in op 45 posed relationship, and adapter blocks interposed tion of each adapter block being longitudinally curved to provide a supporting and frame shifting and adjusting surface, and a pair of duplicate base 45 between the cleats and side rails, the upper edges 1 , units for supporting said frame, each unit being of the cleats being substantially flush with the - longitudinally‘ bowed with .itsbowed upper edge correspondingedges of said side rails, the lower portion disposed between the adjacent rail and edge portion‘ of eachadapter block being longi- . cleat and arranged in matching contact with the curved lower edge portion of the complemental 50 tudinally curved from end to end to provide a con cave chair ‘supporting surface; and a pair of adapter block, the lower edge portion of said base base units for supporting and tilting said frame, ’ unit being provided with longitudinally spaced said .base units being located in‘the existing stopv shoulders, and-an assembling and check bolt pockets between the cleats and side rails, the passing through the cleat and companion rail ' upper edge portion of said base unit‘ being lon ' and located for limited bodily adjustment be 65 gitudinally bowed to provide a convex support ing and fulcruming surfacefor the entire chair," tween said stop shoulders. , - ' ‘ _ _ O. N. SMITH.