US291494A - Furniture-caster - Google Patents

Description

G. D. CLARK.

FURNITURE GASTBR.

(No Model.)

No. 291,494. Patented Jan. 8, 1.884.

i UNITED STATES .Parnu-r "ritieni,"N

,GEORGE DVIGHT CLARK, OF PLAINVILLE, CONNECTICUT.

r-'URNITURE-CASTian,`

SPECIFICATION forming part of Letters Patent No. 291,494, dated January 8, 1854.

To all whom, ri mcm/ concern:

Be it known that I, Gn'onen D. CLARK, of Plainville, in the county of Hartford and State of Connecticut, have invented certain new and useful improvements in Casters; y and I do hereby declare the following to be a full, clear, and exact description of the invention, such aswill enable others skilled in the art to which it pertains to make and use the same. y,

My invention relates to an improvement in casters, and more particularly to that class thereof known to the trade as ,French77 casters, the object being to produce a grade of this class of casters which shall embody the merits of the old grades, and at the same time surpassth em iu strength, durability, and cheapness of production.

Vith these objects in view my invention consists in the combination, with a pintle encircled by two shoulders which are swaged from it, of a washer interposed between said shoulders, one of which is upset after the washer is put in position.

l My invention further consists in certain details of construction and combinations of parts, as will be more fully hereinafter described, and pointed out in the claim.

In the accompanying drawings, Figure l is a view in perspective of a caster embodying my invention. Fig. 2 is a view thereof in vertical section. Fig. 3 is a view in perspec: tive of amodication of my improvement, and Fig. 4 is a view in section thereof. l

French casters consist, essentially, of a pintle, A, having a washer or bearing, B, secured to it, and of a caster-frame, C, supporting a roller, D, my invention consisting in the peculiar adaptation of the pintle to support the washer, and in the construction of the latter. y

Referring to the construction shown in Figs. 1 and 2 of the drawings, the washer B is supported between a heavy shoulder, E, formed upon and encircling the pintle, and a similar but smaller shoulder, F, sufficient space between the two shoulders being left to accommodate it. The said shoulders are swaged from the body of the pintle by any approved Application filed March 13,1883. (No model.)

means, the shoulder F being upset after the washer has been put in place. As shown, the shoulder E is located above the shoulder' F, and this is the preferred construction; but it is apparent that practically the same results may be obtained by reversing this arrangement. Byvirtue of this construction, which simply involves the formation of two shoulders by swaging them from the body. of the pintle, the skin of the metal, wherein its greatest strength lies, is not removed; hence the strength and durability of the completed article.

The shoulders may be formed by hand, or without manual intervention, iu purely auto matic machinery, the expense of adapting the pintle to receive the washer being com- A paratively light in either case. The pintle of the prevailing style of French caster is` encircled by a groove, into which. the inner edges of a malleable washer are forced by compression. This construction involves the formation of the groove, which is attended by considerable expense. It also requires the employment of malleable metal in the fabrication of the washers. The operation of -grooviiig the pintle is much more expensive than that of swaging the shoulders, and malleable washers cost more than those made from sheet or band metal; hence the compara tive chapness of the improved article.

The upper face of the washer B is provided with any desired number of points I, which are made integral with or attached to it. These points enter the wood-work of the furniture to which the casters are applied, and prevent the pintles from turning in the sockets provided for their reception.

The modified pintle shown in Figs. 3 and et Y of the drawings is provided with a shoulder,

G, and with a shoulder,\H, which is located below it, the washer B being interposed between the two and resting upon the latter. The said shoulders are formed by swaging, and the shoulder G is upset after the washer is put in place. If desired, a small washer, J, may be interposed between the washer B and the caster-frame C.

Having fully described my invention, what I claim as new, and vdesire to secure by Letters In testimony whereof I have signed this Patent, Aisspecification in the presence of two subscrib- In a easter, a pintle having two swaged ing witnesses. shoulders and a at disk Washer seated against GEORGE DWIGHT CLARK 5 one shoulder and retained in place by the upl Witnesses:

set metal of the other shoulder7 substantially M. G. CLARK, as set forth. l P. S. CARY. v

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