US654956A - Caster. - Google Patents

Description

Patented luly 3|, |900 A; B'. DISS. r

EASTER. (Application led .fam 2, 1900.)

(No Model.)

TN: Nonms Pmnsco.. PuoraLrmo.. wAsmNsroN, n. c.

f NIT'ED' i STATES PATENT FFICTE.

ALBERT B. Diss, or Naw YORK, N. Y.

ASTER.r

SPECIFICATION forming' part of Letters Patent No. 654,956, d ated July 3l, 1900. i

=Applicati0n filed January 2, 1900. Serial No. 22. (Nonedel.)

To all whom, it, may concern:

Be it known that LALBERT B. ISS, a citizen of the United States, residing at New York, in the borough of Brooklyn, in the county of Kings and State ofjNewYork, have invented an Improvement in Casters,of which the following is a specification. A

The object of my present invention is not only to insure the central position of the pintle, but to limit the movement that can be given to the spring-frame heretofore employed and which spans the pintle within the tubularleg, and to prevent undue strain upon said spring-frame.

In carrying out 4my invention l employ a guide-plate surrounding the pintle and above the disk upon which the tubular leg rests. The tubular leg of the bedstead 'or other article of furniture surrounds and passes over this guide-plate and the same rests upon the aforesaid disk,and being rigid it maintains .the

said pintle in a central position to the tubular leg. This guide-plate is perforated at opposite sides of the pintle, and the free ends of the spanning spring -gfr'ame are provided with small central tangs passing into the said perforations. When the caster is connected with the tubular leg, the parts of the springframe are pressed slightly toward each other and are under tension while in contact with the inner surface of the tubular leg tohold the caster Vfrictio'nally inA place. In this position the'V aforesaid tangs are free in the openings of the guide-plate; but when the caster is removed from the tubular leg the frames spread and the tangs come in contact with the guide-plate, and if the parts of the spring-frame are forced toward each other by a strong hand-pressure the holes in the guideplate act as stops for the tangs to limit this movement and prevent the frame from being so far bent as toinjure its spring qualities.

In the drawings, Figure l is a vertical section illustrating'my invention. Fig. 2 is a simlar view showing the caster connected to the tubular leg.. F-ig. 3 is5 a cross-section at a; :c of Fig. 2, and Fig. 4 is a'plan view of the spring-frame aslaid out liat.

The caster-wheel a, the jaws Z2 therefor, and the pintle c, as well as the disk d, surrounding the pintle and upon whichl the tubular leg g rests, are all of well-known construction and do not require further description.

The spring-frame eV e, spanning the pintle within the tubularleg'and acting outwardly against the inner surface of the tubular leg to maintain the caster frictionally in place, is provided with a narrow central bridge portion e', having an opening to receive the pintle, and the -vertical edges of said springframe are outturned, as wings 2, that are radial to the pintle. The said spring-frame is bent on the transverse dotted lines, Fig. 4, to form the inverted-U shapeshown in Figs. l and 2, and the free ends of the portions e e of the spring-frame are provided with tangs 3, that occupy a central position;

A guide-plate fsurrunds the pintle above the disk d, and the same is provided with openings 4, which when the parts are in position receive the tangs 3 and have the effect of limiting the movement which can be given to the parts of the spring-frame. This guideplate f agrees in diameter with the inner diameter of the tubular leg g, so that the said tubular leg passes over the said guide-plate when in place and rests at its lower edge upon the surface of the disk d.

When the caster is not in position in the tubular leg, the parts e e of the spring-frame are spread-at their lower ends by the spring action, so that the tangs come against the guide-plate f, which guide-plate limits the outward movement of the parts of the springframe, and when the caster is in position in the tubular leg, as shown in Fig. 2, the parts of the spring-frame are pressed slightly toward each other under tension to hold the caster frictionally in place in the tubular leg, and in this position the tangs are free in the openings in the guide-plate.

When the caster is not in position-inthe tubular leg, the guide-plate f, with its openings,not only prevents the parts ofthe springframe spreading too far, but also limits the movement of the parts of the spring-frame under pressure toward one another, so as to prevent too great a movement, which would be likely to injure the spring qualities of the frames at the bent union between the parts e and the central part c', so that careless handling and testing of the spring-frame IOO by hand cannot injure or change the position of the parts of theA spring `frame, the 'tan'gs being of sufficientV strength as cut from the" ward one another, as in handling samplesof .casters carelessly` one is liable to test `1the' spring-frame by hand-pressure to too great alli. extent and so injure the caster. u

While theguide-plate f, Fig. 3, is shown square in outline with fou-rr'points of con-tactf between the same and the inner surface of the, tubular leg, the said plate is made of this form for economyy of Amaterial' and convenience rather than circular,which would be more difcult to pass within the tubular leg; but I do not;limit myself in any way to the form of this plate.v Y

I claim as my inventionl. The combination with the casterwheel, j aWsand pintle, Aa disk surrounding the pintle andv uponA which the tubular leg rests, and a spring-frame spanning the pintle within the tubular leg and acting outwardly against the inner surface of the tubularleg to maintain the caster frictionally in` position, of means-` for'insuring the central position of the pintle and means acting in connection therewith and with the spring-frame for limiting the vmove nent of the spring-frame, substantially as set orth.

, jaws and pintle,` a disk surroundi'ngthepintle adupon which the ktubular leg rests, and a spring-frame spanning the pintle withiuthe tubular leg and acting outwardly against the inner surface of the tubularlleg to maintain the caster frictionally in position, of a guidefjplate surrounding the' pintle above the said disk and adapted to pass -into the lower end of the tubular leg, said plate having perfora- 1 tionsl at opposite sides of the pintle and tangs nllpml the free ends of the spring-frame passqing into the perfor-ations of the saidplate, sub! `stantially asf and for the purposes set forth. r i r3 TheHcoinbination with the caster-Wheel, .jaws'and pintle and a disk surrounding the pintle and upon which the tubular leg rests, l

of an inverted-U-shaped: s-pringframe spanning the pintle within/the tubular. legi and 'having a central portion through which the pintle lpasses andthe verticaledges ofthe frame bent outward` as wingsand which fra-me acts outwardly against the inner` surface of the tub ular leg to maintain the caster` frictionally in position,means for-insuringvthe central position ofthe pintle and means acting incon-v nection therewith and with the spring-frame for limiting the movement of the spring-frame, substantially as set forth. V

Signed by me this 30th day of 1899.A l

Y u December,

AingirrtTY 13.` Diss. l Witnesses: Y

GEO. T.I PINCKNEY,Y

2.` VThe combination with the casteriwhe'el,

S. T. HAVILAND.

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