US1017464A - Caster. - Google Patents

Description

J. RAE.

GASTER.

APPLICATION FILED FEB. 15, 1911.

Patented Feb. 13,1912.

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FIG. I.

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JOHN RAE, 0F PHILADELPHIA, PENNSYLVANIA, ASSIGNOR TO KEARNS MANUFAC- TURING COMPANY, OF PHILADELPHIA, PENNSYLVANIA, A CORPORATION OF DEL- AWARE.

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PatentedFeb. 13, 1912.

Original application filed March 30, 1910, Serial No. 552,292. Divided and this application filed February To all whom it may concern Be it known that I, JOHN RAE, a citizen of the United States, residing at Philadelphia, county of Philadelphia, and State of Pennsylvania, have invented a new and useful Improvement in Casters, of which the following is a full, clear, and exact description, reference being had to the accompanying drawings, which form a part of this specification.

The object of my invention is to provide a caster for a dress form, display stand, or the like, which is so constructed that it may be readily frictionally locked to the floor at any point to which the stand is moved and may be readily unlocked when it is desired to move it from one location to another.

In the drawings: Figure 1 is an elevation of a stand embodying my invention. Fig. 2- is a vertical sect-ion of the locking mechanism. Fig. 3 is an elevation of the locking mechanism, g

a is the base of the stand, b a post mounted thereon, and 0 a dress form carried by the post. Through one leg, or each of two or more legs, of the base extends a post (Z, upon which is swiveled a bracket 6 carrying a roller f. Upon the lower end of the post is threaded a nut g and a rubber block it, the latter projecting below the post and provided with a conical centrally-located aperture 2' in its lower face. Mounted on the top of the leg is a frame or casing 70, orificed to permit the post (Z to extend through it.

at is a spring confined between the top of the casing and a head '22- on the upper end of the post.

0 and p are pins extending through the casing and the leg on opposite sides of the p 1" is a lever, fulcrumed at one end against the wall of an orifice in one side of the casing, loosely sleeved-on the post (Z and the two pins 0 and p, and at its other end projecting through another and larger orifice in the other side of the casing.

s is a spring surrounding one of the pins and confined between the bottom of the easing and a washer on the casing beneath the lever r. The diameter of the orifice in the lever through which the post 0? extends is slightly greater than the diameter of the post. The spring 8 normally holds the lever Serial No. 608,658.

1- is an inclined posit-ion, so that opposite edges of the orifice engage the post and hold the latter from upward movement. The lever, however, offers no resistance to downward movement of the post, as such clownward movement moves the lever toward a horizontal position, thereby relieving its grip upon the post.

When the post is in its upper position, as indicated in Fig. 2, the rubber block it is above the level of the floor, and the dress form may be freely moved about on its rollers. By bearing with the foot upon the head of the post 0?, the latter may be depressed until the block it firmly engages the floor. Upon releasing the foot pressure upon the post, the lever 7' immediately locks the post from rising in the base; and the compressed rubber block h, partially relieved, expands and takes the weight oif of the roller, this weight making suflicient friction between rubber block and floor to give the necessary resistance to lateral motion. The dress form is thus frictionally locked to the floor. To release the same, the outer up-turned end of the lever 1" is depressed, thereby releasing its grip upon the post at, and the latter, under'the impulse of the spring m, is immediately lifted.

This applicationis a division of an application filed by me March 30, 1910, Serial No. 552,292,

Having now fully described my invention, what I claim and desire to protect by Letters Patent is 1. In a caster, the combination with the base and rollers on which the same is mounted, of a post slidable on the base, locking means including a. spring and lever, the latter engaging the post and normally preventing it from rising, a spring tending to lift the post, and an elastic block, on the lower end of the post, adapted to contact with the floor when the post is depressed, said block being recessed in its bottom, thereby permitting the block to, expand, upon release of downward. pressure upon the post, and relieve the weight upon the adjacent roller.

2. In a caster, the combination With the base, of a frame mounted above the base, a post slidable in both the base and frame, a bracket swiveled on the post, a fioor engaghereunto set my hand, at Philadelphia, on this 31st day of January, 1911.

JOHN RAE.

ing device on the lower end of the post, a locking lever pivoted on the frame and engaging the post, 9 spring normally holding said lever in locklng position, a head on the post, and a spring confined between the frame and said head.

In testimony of Which invention, I have Vitnesses M. M. HAMILTON, E, E. WALL.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents, Washington, D. C.

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