US280338A - Roller-skate - Google Patents

Description

L. J. BAKER.

ROLLER SKATE,

(No Model.)

No. 280,338'. Patented July 3, 188s.

WITNEEEEE y MM/ UNITED STATES 'PATENT OFFICE. n

LORING J. BAKER, OF BOSTON, MASSACHUSETTS.

ROLLER-SKATE.

SPECIFICATION forming part of Letters Patent No. 280,338, dated Ju1y 3, 1883.

' Application med April 19. isere. (No model.)

To @ZZ whom it may concern,.-

Be it known that I, LORING J. BAKER, a citizen of the United States, residing at Boston, in the county of Suffolk and State of Massachusetts, have invented certain Improvements in Roller-Skates, of which the following is a full, clear, and exact description, reference being had to the accompanying drawings, making part of this specification, in which- Figure l is a side elevation of a roller-skate constructed in accordance with my invention. Fig. 2 is a longitudinal4 section (enlarged) through one of the hangers and parts connected therewith. Fig. 3 is a transverse section on the line x x of Fig. 2, with the parts in a different position. Fig. 4 is a perspective view of one of the hangers and its roller-carrier inverted. Fig. 5 is a perspective view of the roller-carrier detached.

Roller-skates as heretofore constructed, in which the hanger is provided -with a pivoted or swiveling roller-carrier, and a rubber block or spring interposed between said carrier and the foot-plate, are objectionable for the reason that the rubber block soon becomes indented or `permanently reduced in thickness upon one side by the action thereon of the roller-carrier, which, by the movements of the skater, is usually inclined more frequently on one side than on the other, in consequence of which the rubber spring soon fails to return the roller-carrier to its proper central position or level, and

' the latter becomes loose on its pivots and continually inclines to one side, which seriously interferes with the proper movements of the skater. Moreover,when the rubber spring becomes worn or compressed out of shape, the parts cannot be tightened up and a new spring must be inserted. A

My invention has for its object to overcome these difficulties; and it consists in certain details of construction and combinations of parts, whereby the desired end is attained, as hereinafter fully explained and specifically claimed.

In the said drawings, A represents the footplate of a roller-skate, and B one of the `hangers, which is made hollow and secured to the plate A by means of screws a.

The inclined side b of the hanger B is provided with a rectangular opening, c, within which ts the correspondingly-shaped portion d of the roller-carrier D, which is provided with the usual elongated tubularbearing, e, for holding the aXle f, upon the opposite ends of which are mounted the skate-rollers g g, secured in place by pins i.

The portion d of the rollencarrier D is provided with a projection, k, which extends into the hollow hanger B, and on each side of the projection k is a longitudinal ange or shoulder, Z, which rests on the adjacent edge mof the opening c in the hanger, and within a recess, n, in the projection k ts the end of the arm 6 of a bell-crank lever, p, by means of which the roller-carrier is connected with the hanger and held securely thereto. This lever p has its fulcrum at 8, where it rests upon a shoulder formed on the inside ofthe hanger, and through an aperture in the arm 10 of this lever passes a screw, q, which also passes through the end of the hanger, outside of which it is encircled by a spring, G, composed of a disk or block of rubber confined between the end of they hanger and a washer, r, and over the threaded portion of the screw, outside the washer r, ts a thumb-nut, t, by turning or adjusting which the rubber spring can be compressed more or less, thus holding theroller-carrier more or less rmly in place with in the hanger, as required.

At one end of the portion d of the carrier is a projection, u, which fits within the aperture c at one end thereof, and prevents the carrier lfromhaving any play or loose motion in the direction of the length of the opening c.

When, during the movements of the skater, the roller-carrier D is rocked or pressed over to one side or the other with respect to the hanger, one of the shoulders or flanges Z takes a solid bearing on the contiguous side m of the opening c, which forms a fulcrum therefor, causing the opposite flange Z of the carrier to vbe forced out from the adjacent edge of the opening c, as seen in Fig. 3. This movement of the carrier D, whether to the right or left, produces a downward draft on the arm 6 of the lever p, which, through the screw q, washer o',

IOO

ing the thumbnut t any desired degree of e1as tic pressure can b'e put upon the lever p to cause it to hold the roller-carrier up to the hanger with more or less force, as required. The projection 7c, which lits within the hollow hanger, strikes against the sides of the interior thereof when the roller-carrier is rocked, as seen in Fig. 3, and thus serves to limit its lateral movement with respect to the hanger.

I do not confine myself to the precise construction and arrangement of the lever for connecting the roller-carrier with the spring, as shown, as these may be varied without departing from the spirit of my invention; but in all cases the connection between the rollercarrier and the spring must be such that a lateral or rocking movement of the roller-carrier in either direction will produce a square and even compression of the spring, as above de scribed.

What I claim as my invention, and desire to secure by Letters Patent, is`

l. In a roller-skate, the combination, with the hollow hanger B, attached to the foot-plate A, of the swiveling or rocking roller-carrier D, provided with a projection, 7c, and having flanges or shoulders Z, adapted. to bear upon the opposite sides m of the hanger as the carrier is rocked to one side or the other, the lever p, screw q, spring G, and adjusting-nut t, all constructed to operate substantially in the manner and for the purpose described.

2. In a roller-skate, the combination, with the hanger B and the swiveling roller-carrier D, with its projection k fitting within the hanger, ofthe bell-crank lever p, having one arm connected witlrthe projection k, and the'other arm connected with a spring, G, adapted to be squarely and evenly compressed by the rocking movement of the roller-carrier in either direction transmitted through the lever p, substantially as described.

Witness my hand this 17th day of April, AA D. 1883.

P. E. TEscHEMAcHER, IV. J. CAMBRIDGE.

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