US838307A - Caster. - Google Patents

Description

No. 838,807. PATENTED DEC. 11, 1906. A. B. DISS.

GASTBR.

APPLICATION FILED NOV. 7. 1905.

ALBERT B. DISS, OF NEWARK,

CASTER & FOUNDRY COMPANY, OF NEWARK, NEW

PORATION OF NEW JERSEY.

NEW JERSEY, ASSIGNOR TO UNIVERSAL JERSEY, A COR- CASTER.

Specification of Letters Patent.

Patented Dec. 11, 1906.

Application filed November 7, 1905. Serial No. 286.183-

To all whom, it may concern.-

Be it known that 1', ALBERT B. DISS, a

citizen of the United States, residing at N ewark, in the county of Essex and State of New 1 Jersey, have invented a new and useful Im- I rovement in Casters, of which the following is a specification. i

In casters as usually constructed the part carrying the wheel or roller and to the center of which the lower end of the pintle is secured, and which part is designated as the jaws, is either formed of castmetal or is cupped up from a blank stamped out of sheet metal. These latter are ordinarily a simple yoke, with which the pintle has only a single point of support; and the object of my invention is the formation of the jaw structure to be cupped up and formed from a blank or blanks of sheet metal of the construction simulatinga box-frame through which the pintle passes and in which the same is pro vided with two points of bearing and sup 'ort. P In carrying out my invention the blank of sheet metal has a central portion in part circular, with lugs at one side, while from the other side project two jaw members at an .is'cupped up to sha improvement.

obtuse angle to one another, whose free ends are perforated and a projection centrally between these members from the edge of which extends a lug. The central part of the blank is perforated for the intle, and I provide an auxiliary blank, whic when the main blank e fits within and against .the same and is hel thereto by the aforesaid lugs, which are bent over upon the surface of the auxiliary blank. This auxiliary blank is centrally perforated for the pintle.

In the drawings, Figure 1 is a vertical section and partial elevation, and Fig. 2 an inverted plan representing the device of my Fig. 3 is a plan of the preferred formof sheet-metal blank. Fig. 4 is an inverted plan, and Fig. 5 a vertical section and partial elevation, of this blank cupped u to shape. auxiliary lank, and Fig. 7 a plan of a modified form of sheet-metal blank.

The caster-wheel a is of ordinary and wellknown character, and the intle c and furniture-leg d are also of or inary and wellknown character.

brepresents the jaw members, and b the jaw-frame. frame are first formed as a blank stamped Fig. 6 is a plan'of the -The jaw members and jawout of sheet metal, and Fig. 3 shows the preferred form of this blank, in which there is a central circular portion 2, a central perforation 3, lugs 4 at one side of the blank, and from the other side oft-he blank the jaw members b project at an obtuse angle to one another, with the free ends perforated to receive the pivot-pin of the caster-wheel, and between these jaw members b there is a projection 5 of the blank with a central lug 6.

The process of cupping up the blank is of course gradual; but w en cupped up the jaw members I) and the rim of the circular central portion 2 form, as shown in Figs. 4 and 5, a continuous wall, in which the jaw members b.

are parallel to one another and the connecting-wall'semicucular, the central portion of the blank around the hole for the pintle bein flat and substantially at right angles to the jaw members and this back wall, and the parts as cuppedup form an inverted-cup.

configuration.

The projection-5 is drawn at right angles to the flat portion surrounding the hole of the pintle and comes between the jaw members,

and the auxiliary blank 6, stamped up from sheet metal, as shown in Fig. 6, is rovided with a central hole for the pintle, Wit a recess at 7 and a lug at 8, the said auxiliary blank fitting within the cupped-up portion of the main blank, as shown in Figs. 1 and 2, the lug 6 being received in the recess.7 and the lug 8 in the recess between the lugs 4. The lug 6 being bent over upon thesurface of the auxiliarv blank e holds the same against the walls formed at the end ofthe projection 5. The lugs 4 are also at the opposite side of the auxiliary blank bent over upon the outer face thereof, so as to hold the lug S with force, of the blank between e imparted to this auxagainst the wall edge said lugs, and the sha iliary blank is such t at this outer edge fits snugly within the semicircular wall and adjacent portions of the parallel walls of the jaw members, and the pintle is assed through the holes of the auxiliary b ank and main blank, so that its head bears against the outer surface of the auxiliary blank in the position shown in Figs. 1 and 2. This structure forms a very rigid support for the lower end of the pintle and base, from which the parallel jaw members 1) project to their connection with the caster-wheel, and the manner of attaehing the auxiliary blank to the main blank secures the auxiliary blank firmly and permanently in position, and the fact that there are two bearing-points for the pintle insures the pintle maintaining the right relation to the easter-wheel and jaw-frame and prevents a looseness or wabbling of the same, which would cause unnecessary wear at the union of the pintle with the aw-frame.

In the structure shown in Fig. 7 the main blank is almost identical with the blank shown in Fig. 3, except that between the lugs 4 of the form shownin Fig. 7 there is a V- shaped notch 9. In cupping up the main blank it is somewhat easier to cup up the blank shown in Fig. 7 than the blank shown in Fig. 3, and when the blank shown in Fig. 7 is cupped up the edges of the V-shaped notch 9 are brought closely together, so that in the cupped-up article there is only a line through the metal; but the same is not as strong or as acceptable in its form as the structure cupped up from Fig. 3.

- I do not herein limit myself to the number or location of the connecting-lugs and recesses employed, respectively, upon the main and auxiliary blanks.

I claim as my invention 1. 1n aeaster, the combination with the caster-wheel and pintle, of jaw members and a jaw-frame cupped up from a blank stamped out of sheet metal so as to form a hollow structure in which there is a straight rim of circular formation from which the parallel hers extend as prolongations, and an auxiliary blank received within the cupped-up portion of the main blank, and means for connecting the main. and auxiliary blanks, the pintle assing through the erforations in both blanks which provide t e same with two bearing-points.

3. Ina caster, the combination with the caster-wheel and pintle, of jaw members and a jaw-frame cupped up from a blank stamped out of sheet metal so as to form a hollow structure, in which there is a rim of circular formation from which the parallel jaw members extend as prolongations, said blank having a central be e for the pintle, projections 4 at formation from which the parallel jaw memhers extend as prolongations, said blank having a central hole for the pintle, projections 4 at one side, a projection 5 and lug 6 at the 0pposite sides, an auxiliary blank having a curved edge and a straight edge, a recess 7 and lug 8 and adapted tofit within the curved portion of the main blank and its straight edge to rest u on the edge of the projectioni5, the lug 6 of t 10 main blank being received in the recess 7 of the auxiliary blank and overturned, and the lug 8 of the auxiliary blank received between the said lugs t of the main blank and the latter lugs overturned upon connecting the parts ALBERT B. DISS Witnesses:

Gno. T. PINCKNE E. ZACIIARIASEN

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