US719133A - Eccentric. - Google Patents

Description

PATENTED JAN. 27, 1903. 1 J. 211mm.

I EGGENTRIG.

APPLICATION FILED JUN}: 18, 1902.

30 MODEL.

ECCENTRIC.

SPECIFIGATION forming part of Letters IPatent N 0. 719,133, dated January 27, 1903. Application filed June 18,1902. Serial No. 112,129. (No model.)

T0 (0% whom it may concern:

Be it known that 1, JAMES PINCIN, a citizen of the United States, residing at Altoona, county of Blair, and State of Pennsylvania, have invented a certain new and useful Improvement in Eccentrics, of which the following is a specification.

My invention relates to a new and useful improvement in eccentrics, and has for its object to so construct an eccentric that after the same has become loosened through wear the same can be repaired and made as good as new by the insertion of new parts without removing the eccentric from the shaft.

With these ends in view this invention consists in the details of construction and combination of elements hereinafter set forth and then specifically designated by the claims.

In order that those skilled in the art to which this invention appertains may understand how to make and use the same, the construction and operation will now be described in detail, referring to the accompanying draw-v ings, forming a part of this specification, in which Figure 1 is a side elevation of the eccentric constructed according to my invention; Fig. 2, a central longitudinal section of the same; Fig. 3, a section on the line 3 3 of Fig. 1; Fig. i, a perspective view of one of the liners placed between the two sections of the eccentricstrap.

In the drawings, A represents the shaft, upon which the eccentric B is clamped by means of the bolt 0. This eccentric has formed in its periphery the annular groove D, in which is adapted'to be inserted the ring E, which is preferably made of cast-iron. This ring E is made in halves, so as to be inserted within the groove D, and these halves are held to the eccentric by means of the tapered headed bolts F, which fit within tapering holes formed in the ring so that the heads of the bolts are flush with the outer circumference of the ring E. This ring E is about twice the thickness of the depth of the annular groove D, so that half of the thickness of the ring will extend beyond the periphery of the eccentric B.

G is a bushing preferably made of bronze and is I-shaped in cross-section, having an interior and an exterior annular groove. This bushing is made in halves and fits over the ring E when the ring is in place, as shown in Fig. 3, the ring fitting in this interior annular groove.

H is the eccentric-strap, which is, as usual, made in two parts andfits within the exterior annular groove of the bushing H. The halves of the eccentric-strap are bound and held together by means of the bolts 1, which pass through the ears J of the strap, and between these ears J are placed the liners K, which also extend inward between the two parts of the bushing G, so that the bushing cannot revolve inside of the strap. These liners K may be taken out after the strap becomes somewhat loose through Wear and thinner lines put in their places, so as to bring the two parts of the strap and bushing closer together to take up any wear.

When the bearing-surfaces of the eccentric become so worn as not to be remedied by the simple replacing of the liners K, the strap H and bushing G are removed, and then by removing the halves of the ring E a new ring can be put in place, and, if necessary, new bushings G may be inserted. This is accomplished without removing the eccentric from its shaft. This will be of great advantage in eccentric construction on account not only of the saving in expense on the eccentric and the increasing of the life of the same, but will save considerable money and time on account of the quickness with which the eccentric can be repaired, so that the machinery need be idle but a comparatively short time.

Of course I do not wish to be limited to the exact construction here shown, as slight modifications could be made without departing from the spirit of my invention.

Having thus fully described my invention, what I claim as new and useful is 1. In an eccentric having a central circular portion clamped eccentrically upon the shaft, an exterior annular groove formed in the periphery of the central portion, a two-part ring adapted to be secured within this groove to the central portion, a two-parteccentric-strap secured upon the outside of the two-part ring, a two-part bushing interposed between the eccentric-strap and the ring, said bushing being provided with an exterior and an interior annular groove to which the strap and the ring are respectively adapted, substantially as and for the purpose specified.

2. In an eccentric of the character described having a circular central portion adapted to be eccentrically clamped to the shaft, said central portion being provided with an exterior annular groove, a two-part ring adapted to said groove, bolts securing said ring to the central portion, said ring being greater in thickness than the depth of the groove, a twopart strap secured around the ring, a bushing interposed between the strap and the ring, said bushing being provided with an exterior and an interior annular groove, the ring being adapted to the interior groove and the strap to the exterior groove, liners interposed between the twoparts of the strap and the bushing,ears formed with the strap and liners, bolts adapted to pass through the ears of the strap and liners, substantially as and for the purpose specified.

3. In an eccentric having a cylindrical central portion adapted to be clamped to the shaft eecentrically, an annular groove formed in the periphery of said central portion, a laterally-divided ring adapted to said groove,

said ring being greater in thickness than the depth of the groove, tapering headed bolts adapted to pass through the ring and through the flange of the central portion, said ring being provided with tapering holes to receive the tapering headed bolts so that the heads of the bolts will be flush with the periphery of the ring, a two-part strap secured around the outside of the ring, a two-part bushing interposed between the strap and the ring, said bushing being provided with an interior annular groove in which the protruding portion of the ring is adapted, the bushing also provided with an exterior annular groove to which the strap is adapted, removable liners interposed between the two parts of the strap and the bushing, and means for securing the two parts of the strap together, substantially as and for the purpose specified.

In testimony whereof I have hereunto affiXed my signature in the presence of two subscribing witnesses.

JAMES PIN GIN. Witnesses:

ROBERT MCDOWELL, F. J. HOPKINS.

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