US103346A - Improvement in parlor-skates - Google Patents

Description

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` IMPROVEMENT IN PARLOR-SKATES.

' Specification forming part of Letters Patent No. 103,346, dated May 24, 1870.

l To all whom it mag/concerm Be itjknown that`I,-`J0HN LEMMAN, of Gincinnati, Hamilton county, State of Ohio, have invented certain;4 new..V and useful` Improvementsin Roller-Skates; and l hereby declare the followiizlglto` be a sufciently full, clear, and exact description thereof to enable one skilledin lthe lart.` to which my invention appertains to make andjuse, it,` reference being hadf` to the accompanying drawing, making part of thisspecilication. A

My invention'. relates to the class of broadbase roller-skates the rollers of which are adjusted to turn curves by the natural inclination of the body in skating curves; and my invention consists in the provision of ball-andsocket joints. connecting the roller-frames to the stock ot the skate, which device, in connection with pivoted levers attached to the sockets,enables the stock of the skate, by rolling inthe sockets in obedience to the motion of the body ofthe skater, to so adjust the rollers as to compel them to follow the di` rection desired bythe skater.

. My invention further consists, in connection withthe ball-and-socket device' for the rollerframes of a ilat steel spring, in connecting the two roller-frames together in such amanner that the roller-frames will be returned by the spring to the central position after being adjusted to turn or describe curves.

In the accompanying drawing, Figure l is a perspectiveview of a roller-skate embodying my invention. Fig. 2 is a longitudinal section of the same. Fig. 3 is a plan of the under side of the skate, showing the position of the rollers and frames in describing curves. Fig. 4 is a top-plan view of one end of the stock. .l

Thefoot-stand or stock A of the skate is formed with downwardly-projectin g spherical segments ct a', which arehconcave on the upper side, as shown, leaving a uniform thickness of: metal between the convex and concave sur- The stock is secured to the foot of the skater by straps B G or any other preferred method. l l

Therollers, which are preferably four in number, are journaled in the frame D D', in the manner shown, in such a way as to permit of the withdrawal of the axles for lubrication.

Ihe frames D D are concave on the upper side to fit over the spherical segments a a', forming what is known as ball-and-socket joints.77

The frames Dl D are also formed with projectin g levers d d', whichare loosely connected Yto the stock A at E E or F F by set-screw pivots G'G.

The levers d d are slotted, as shown, to permit of the changing of the pivots G G from E E" to F F', in order to diminish the divergence of the levers from the center line of the stockwhen the stock is tilted. l

The frames are connected to the stock A, at thecenter of the ball-and-socket joints, by setscrews HYH, the stock being slotted across as shown in Fig. 4, to permit the lateral adjustment of the roller-frames.

A spring, I, is fitted into the slotted projections J J' ofthe roller-frames, which serves toreturn` the frames to the central position after being forced bythe rolling of the stock A into positionfor curves. This provision is not essentially necessary, as the skate is complete without it 5 but it is preferred by some skaters, as it prevents shackling In the operation of this skate the center of the concave of the rollerframes D D is in line with the center line of the stock when skating straight. When skating curves the stock A is rolled or tilted by the necessary inclination of the body for curves, and both frames D D are forced, by the action of the ball-and-socket joints, to the side of the skate on which the body leans. The ends of the levers d d being retained by the pivots Gr Gr in the center line of the stock, the axles of the rollers are necessarily twisted or cramped out of right angles with the skate-stock and compelled to assume the required position for a curve, the degree of adjustment, of course, always depending upon the extent to which the body of the skater is'inclined, as in other skates of this class.

It will be seen that the oscillating frames D D' are not connected to the stock by small pintles or axles, upon which all the strain is sustained, as in other skates with tilting footboards, but the connection is broad and Solid, with the best known form for wearing surfaceviz., ball and socket.

Claims.

1. In connection with the stock A, provided with spherical segments a a and, pivots G G', the concave rollerframes D D d d', combined, arranged, and operating substantially in the manner and for the purpose specified.

2. In connection with the oscillating rollerframes D D J J', the provision of the spring I, connected and operating in the manner and for the purpose described.

In testimony of which invention I hereunto set my hand.

JOHN LEMMAN. Witnesses:

FRANK MILLWARD,

EZRA COPE.

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