US2430043A

US2430043A - Base for tilting chairs

Info

Publication number: US2430043A
Application number: US526515A
Authority: US
Inventors: Harry W Bolens
Original assignee: Seng Co
Current assignee: Seng Co
Priority date: 1940-08-03
Filing date: 1944-03-15
Publication date: 1947-11-04
Anticipated expiration: 1964-11-04

Description

NOV. 4, 1947. I H, w, BOLENS 2,430,043

BASE FOR TILTING CHAIRS i original Filed Aug. 3, I1940 IN VEN TOR.

#HE/PV W .BOE/VS.

Patented Nov. 4, 1947 BASE FOR TILTING CHAIRS Harry W. Bolens, Port Washington, Wis., assignor, by mesne assignments, to The Seng Company, Chicago, Ill., a corporation of Illinois Original application August 3, 1940, Serial No. 350,310. Divided and this application March 15, 1944, Serial No. 526,515

3 claims. (c1. 24g- 194)y This invention relates to an improvement in tilting chairs, and more particularly to an improvement in the base of such chairs and in the chair iron which supports the seat on the base for tilting movement.

The present application is a division of my application for Tilting chairs, filed August 3, 1940, serial No. 350,310.

One of the objects of the invention is to provide a hub which may be fabricated from sheet metal parts, but which is extremely strong, rugged in assembly, durable, and comparatively inexpensive to manufacture.

Other objects and advantages reside in certain novel features of the construction, arrangement, and combination of parts, which will be hereinafter more fully described and particularly pointed out in the appended claims, reference being had to the accompanying drawing forming a part of this specification, and in which:

Figure 1 is a view in side elevation showing the metal base to which the legs are connected and upon which the spindle of the chair iron is supported;

Figure 2 is a view in transverse, vertical cross section taken on line 2-2 of Figure 3; v

Figure 3 is a view in bottom plan of the metal base shown in Figures 1 and 2;

Figure 4 is a view thereof in transverse, horizontal cross section taken on line 4 4 of Figure 1; and

Figure 5 is a fragmentary View in section, taken on line 5 5 of Figure 3.

Referring to the drawing, the hub comprises a central sleeve or tube B which may be rolled from a piece of sheet metal and which has its upper ends flanged outwardly as at 1. A strengthening and reinforcing ring or cap 8 is disposed on the flange 1, and this ring or cap 8 is spun around the outer edge and under the margin of the flange l, as indicated at 9. A circular top plate I0 is provided and has a central opening through which the tube 6 extends and to which the tube is snugly fitted. The margin of the opening of the top plate I0 is engaged with and supported by an outwardly directed corrugation 6 provided on the tube 6. A double-flanged sleeve or ferrule IB surrounds the portion of the tube 6 located between the top plate I0 and its flange 'I and serves to hold the top plate against its corrugation and to stiffen and reinforce the flange 1. Leg-engaging brackets I2 are provided, and in the present instance there are four in number. They are of similar construction and each is of shallow V- shaped formation in horizontal cross section, although at spaced intervals along the length of each the leg bracket ribs or bosses I3 are pressed out therefrom to stiffen and strengthen these brackets. The upper end of each leg bracket is provided with integral attaching lugs I4 which extend through suitable slots provided therefor in the top piece I8 and are upset into secure and rigid engagement with the top piece. The lower end of each bracket plate is provided with a slot to adapt it to be intertted and interconnected with the generally triangularly shaped attaching arm I5 provided therefor on the lower plate I6 of the hub. The plate I6 has a central opening through which the tube 6 projects.

In the assembly the legs are disposed between the confronting portions of adjacent bracket plates and they are secured in this position by screws I8 which extend through openings provided in the top piece and are threaded into the legs. A hub construction of this character may be manufactured with facility and at comparatively little expense from sheet metal, and yet provides an extremely strong and rugged construction and one which will stand up over a long period of time In manufacturing the hub of the base the tube 6 is first formed into a cylinder with its upper end unflanged. The corrugation 6', usually an interrupted corrugation, is then formed. The top plate IIJ is then assembled with the tube, the previously flanged ferrule I0' slipped over the upper end of the tube, the upper end of the tube 6 flanged outwardly, and the reinforcing plate 8 then assembled with these parts and spun into place. The leg brackets and bottom -plate are then assembled with the other elements.

While I have shown and described one construction in which the invention may be advantageously embodied, it is to be understood that the construction shown has been selected merely for the purpose of illustration or example, and that various changes in the size, shape, and arrangement of the parts may be made without departing from the spirit of the invention or the scope of the subjoined claims.

I claim:

1. A hub for the base of a tilting chair comprising a, centrally disposed tube having its upper end flanged outwardly, a double flanged ferrule on said tube, a reinforcing cap formed over said flanged upper end on the tube and a ilange on said ferrule, a corrugation on said tube, a top plate rigidly interconnected with the tube and held between said corrugation and the other flange of said ferrule, leg brackets having lugs staked to the top plate, and a. bottom plate having attaching arms intertted with the lower ends of the leg brackets and staked thereto.

2. A hub for the base of a. tilting chair comprising a central tube having its upper end anged upwardly, a reinforcing cap having an upper portion formed over said ilanged upper end of the tube to provide a bearing member for receiving the thrust forces placed on a chair spindle carried by said hub and a lower portion formed under said flanged upper end of the tube to hold said cap in position, a top plate interconnected with the tube adjacent its upper end, Va bottom plate mounted on the lower end of the tube, and leg brackets extending between and secured t0 said plates.

3. A hub for the base of a, tilting chair comprising a central tube, a top plate rigidly interconnected with and supported on the upper end portion of the tube, a bottom plate mounted on the lower end of the tube, and leg-engaging '4 brackets having sides forming a shallow V-shaped cross section extending between said plates, the confronting sides of adjacent brackets forming a socket for receiving a respective leg, said leg brackets having their upper ends fastened to the REFERENCES CITED The following references are of record in the le of this patent:

UNITED STATES PATENTS Number Name Date 2,168,810 Sheldrick Aug. 8, 1939 1,459,138 Bolens June 19, 1923