US289793A

US289793A - Geobge w

Info

Publication number: US289793A
Authority: US
Publication date: 1883-12-04
Anticipated expiration: 1900-12-04

Description

(No Model.)

G. W. EMERSON.

BELT REPLIAGER. v

Patented Dec. 4, 1883.

llNirnn STATES ATENT rrrcn.

GEORGE V. EMERSON, OF OAKLAND, CALIFORNIA, ASSIGNOR OF ONE-HALF TO PEROIVAL G. JAOOBUS, OF SAME PLACE.

BELT-REPLACER.

SPECIFICATION forming part of Letters Patent No. 289,793, dated December 4, 1883. Application filed May is), 1883. (No model.)

To all whom, it may concern Be it known that I, GEORGE W. EMERSON, a citizen of the United States, and residing in the city of Oakland, county of Alameda, State of California, have invented an Improved Belt- Replacer; and I hereby declare the following to be a full, clear, and exact description thereof.

My invention relates to the class of belt-replacers; and it consists in a peculiar means for holding the belt to the periphery of the pulley, so that the revolution of the pulley will automatically replace the belt, as will hereinafter fully appear.

The object of my invention is to render the operation of replacing belts, especially the long and heavy belts-such as are used on thrashing-enginesau easy matter, and avoid the loss of time and wear and tear consequent to the usual manner of replacing belts, and where the assistance of several men is required.

Referring to the accompanying drawing,

, ihe sole figure is a perspective view of my replacer, showing its position when placed on a pulley-wheel ready to receive the loop of the belt, part of the face of the pulley P being broken away to show the engagement of the rod D d behind the spoke. The pulley revolves in the direction of the arrow.

A represents a removable arm, projecting from the periphery of pulley-wheel P. It is provided with the shoulder or jaw A, shank B, and lug a. The jaw A adapts it to rest or bear against the face of the pulley. The shank B is provided near its lower end with an aperture, for the admission of a rod, D, as shown.

0 is a collar or sleeve, adapted to slide 011 the shank B, and be adjusted to any position by means of the set-screw c. This sleeve 0 is so formed on its inner side as to provide a suitable bearing or jaw in opposition to the jaw A of arm A. The rod D is bent at an acute angle, or curved near its inner end, so as to adapt it to pass behind and partly encircle the spoke p. This rod is adjustable in its length, and is set by the set-screw b in the end of shank B.

The operation of the device is as follows, its

adjustment being first considered: The arm A is held against the edge of the rim or face of a pulley, so that the shoulder A rests on the face of said pulley. The sleeve or collar 0 is then moved up snugly against the inner surface of the pulley-rim, and is set firmly in such position by the setscrew c. The rod D is then adjusted so that its bend (1 passes behind and partly encircles a spoke, being then firmly set by the screw b. This rod D prevents the device from slipping off transversely or from slipping in the direction of the belt. The device is now self-sustaining, and no reasonable amount of strain or pull on the arm A in the direction of the belt will detach it; but the slightest pull in the direction of the revolution of the pulley, or in the direction in which the arm (1 extends, will release it from the pulley.

Having thus attached the replacer, we pass the end or loop of the belt to be replaced over the arm A'and under the projecting end of the rod D, or, if there is a projecting shaft from the center of the pulley, around it. arm A, extending radially and preferably inclined a little outwardly, prevents the bight of the beltfrom slipping 0 and as the pulley is revolved, the slack belt is taken up by the face of the pulley, and in a little more than one-half a revolution the belt is replaced, as any one familiar with replacing belts will readily understand. The pulley may revolve many-times before removing the replacer, as the inclination of the arm A outwardly prevents it from interfering with the play of the belt, or the replacer will fall off automatically after being relieved of the belt, if the arm at is bent at right angles to D instead of at an acute angle. The lug a on arm A is useful in preventing'the belt from slipping over the arm when, from necessity, the belt-replacer is attached to operate from the opposite or under side of the pulley instead of from the top, as here shown, the projecting end of rod D in this case acting as a support for holding up the loop of the belt. The operation of replacing is precisely similar in either case, and can be easily understood by turning the drawing upside down. v

The I As pulley-wheels such as are used on thrashing and the ordinary portable engines are of varied sizes and different widths and thicknesses of rims, the value of such a device as mine 5 is apparent, as it can be adjusted to fit any pulley. It is made strong and durable, preferably of wrought-iron, and forms a valuable addition to the harvesters outfit. Many belts are ruined by being tied to the face of a pulley andthe pulley then revolved to replace the belt. In such a case the rope is liable to cut the belt consequent to the strain brought to bear transversely at the bound part on the belt. In other cases the men have to be called away from their regular work to assist in replacing. In mine the engineer or fireman simply attaches the already-adj usted replacer and passes the slack loop of the unshipped belt over the arm A, and, steam being given to his engine, 20 the operation is quickly accomplished.

Having thus described my invention, what I claim as new, and desire to secure by Letters Patent, is

1. In a belt-replacer, the arm A, with its jaw A, .and shank B, in combination with the ad- 25 justable jaw O or equivalent adjustable means by which different thicknesses of pulley-rim may be clasped, substantially as herein described.

2. The arm A, as shown, in combination with the adjustable jaw O and a means for engaging the spoke of a pulley, substantially as and for the purpose herein described.

3. The arm A, with its lug a, and shank B, having aperture d, and set-screw b, in combination with the adjustable jaw O, with its set-screw c, and the adjustable rod D, with its curved or bent portion d, substantially as and for the purpose herein described.

4. The combination, with the arm A, hav- 4o ing jaw A andjaw G, of a rod or bar, D, projecting from the shank B, to support the belt, substantially as set forth.

In witness whereof I hereunto set my hand.

GEORGE WV; EMERSON.

WVitnesses:

S. H. NoURsE, E. A. BRANDAU.