US1255971A - Fastening means. - Google Patents

Description

W; C. F. ZIMMERMAN.

FASTENING MEANS.

APPLICATION men on. 1-1 1913.

awn.

Patented Feb. 12, 1918.

witname irr era ree ram ism reten- WILLIAM C. F. ZIMMERMAN, 0F LONE TREE, IOWVA, ASSIGNOR TO ZIMMERMAN STEEL 00., OF LONE TREE, IOWA.

FASTENING MEANS.

To all whom it may concern:

Be it known that I, XVILLIAM C. F. ZIM- MERMAN, a citizen of the United States, residing at Lone Tree, in the county of J ohnson and State of Iowa, have invented certain new and useful Improvements in Fastening Means; and I do hereby declare the following to be a full, clear, and exact description of the invention, such'as will enable others skilled in the art to which it appertains to make and use the same.

This invention relates to improvements in fastening means especially for use in connection with power pulleys, and the primary object in view is the provision of efficient means for locking the pulley retaining pin against dislocation. 7

With this and further objects in view, as will in part hereinafter become apparent and in part be stated, the invention comprises certain novel constructions, combinations and arrangements of parts as will be hereinafter specified and claimed.

In the accompanying drawing,

Figure 1 is a plan view of a structure embodying the features of the present inven tlon.

Fig. 2 is a longitudinal, vertical, central section therethrough, parts being seen in elevation.

Fig. 3 is a fragmentary, horizontal section taken on the plane indicated by line of Fig. 2.

Referring to the drawing by numerals, 1 indicates the sheave or pulley having the cable-receiving peripheral groove 2 and the hub 3. Pulley 1 lies between the arms of a clevis or plate l, and is rotatably mounted therebetween-on a shaft or pin 5, one end of which is engaged by a link or bail 6 which is free to swing pivotally with respect to pin 5 and serves as a handle for enabling manual removal of the pin 5 when desired. Fixed to and outstanding from each of the arms of the clevis 4: is a bracket 7 which ex-' tends forwardly or toward the open portion of the clevis, each bracket 7 overhanging a portion of its respective arm of the clevis, and the material of each of said arms being formed with a groove or recess 8 beneath the overhanging portion. As clearly seen in Fig; 3, each groove 8 extends away Specification of Letters Patent. Patented Feb. 12, 1918. Application filed October 17, 1913.

Serial No. 795,713.

from its respective bracket '7 on opposite sides thereof in angular relation thereto for receiving and frictionally retaining the respective arm of the link 6, the link being adapted to have either of its side members or arms sprung into the groove 8 a cording to which side of the bracket 7 is occupied by the link at a given time. The link may be thrust beneath either bracket Tat either side thereof and will be effectively retained until positively forced from beneath the bracket, as, for instance, when it is desired to withdraw pin 5. It is, however, preferable to dispose the link at that side of bracket 7 in the directionof rotation ofthe pulley while in use, for example, while p ulling a stump so that the friction of the pulley against the pin will maintain and render iirmcr the engagement between the link and bracket, thus obviating the liability of loosening or loss of the pin. It will be observed that brackets 7 are exact duplicates of each other so that though pin 5 is provided with only one link 6, said pin may be introduced through the clevis at either side thereof and may be readily, easily and quickly locked in position.

Formed integral with and extending laterally from each edge of each arm of the clevis is aside flange 9 which extends throughout the length of the respective arm of the clevis and beyond the periphery of the pulley 1 so as to serve both to prevent access of dirt or other foreign substances between the pulley and arms of the clevis and to prevent liability of lateral dislocation of the cable from the groove 2. Of course, the said flanges also serve to strengthen the clevis, and being of solid, rigid material, preferably cast integral with the clevis, are not liable to be bent or turned away from the faces of the pulley.

The said flanges converge into the rear ends of the arms of the clevis and all of said parts are preferably formed integral with or suitably fixed to a cable socket 10 whose bore ll'is enlarged at its inner end, as indicated at 12. A cable 13 extends into said bore and is of sufficient diameter for snugly fitting the main portion of the bore, the end portion of the cable having its strands frayed, as indicated at 14, and interfilled with Babbitt metal or other appropriate filler for ositivelyand efiectively fixing the cable to t e socket. I

Cable 13, of course, may be adapted for general application and used for any purpose whatever, and as indicating one form of adaptation the end portion of the cable remote from the pulley may be provided with a cable hook 15, as indicated in Fig. 1.

An important advantage will be noted from the employment of the lockfor the pulley pin, in that the pin is prevented from moving longitudinally or otherwise working loose and becoming disengaged from one of the arms of the clevis. In some of the common types of pulleys of this class this working loose of the pin results in the destruction of the apparatus by virtue of the uneven strain caused by the escape of the pin from one arm of the clevis which uneven strain bends or breaks the other arm. This danger is entirely obviated by the structure above set forth. i

- It has been proposed to employ cotter pins at the opposite ends of the pulley pin, but these work loose and are otherwise lost out and occasion a great deal of trouble and annoyance. In the art in which the present in- Vention is especially well adapted for use, that is stump pulling, small parts such as cotter pins, are easily lost in the brush, loose ground and debris that is usually encountered, so that the link and its locking means are very desirable in lessening the number of parts as well as lessening the liability of loss It is obviously desirable in this art to Copies of this patent may be obtained for five cents each, by addressing the Washington, D. 0.

reduce the number of parts to as few as possible, andto make the parts large enough to prevent them from being easily lost.

What I claim is 1. In a device of the classdescribed, the

' combinationof a plate having spaced arms,

a bracket outstanding from each of the arms, each bracket having an overhanging portion, and a pin for retaining a pulley, or the like having a handle portionv adjacent oneof its end adapted to extend beneath the overhanging portion of either of said brackets according to the disposition of the 1n. I V 2. In a device of the class described, the V combination of a plate, a pin, therefor for retaining a pulley or the like, a link pivotally ring a pulley or the like, a handle pivotally connected to the pin, and a bracket carried by the plate and disposed to at times overhang the handle, a groove being formed in,

the plate into which said handle is adapted to be sprung when overhun by the bracket.

In testimony whereof I a Xmy signature in presence of two witnesses.

WILLIAM C. F. ZIMMERMAN.

V Witnesses:

H. V.MoCLUsKEY, J. E. ASHTON.

"Gommissioner of Patents.

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