US80602A - glark - Google Patents

Description

0. W. CLARK. ELEVATOR BUCKET.

No. 80,602. 'Patented Aug. 4, 186B.

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O. W. CLARK, OF APPLETON, WISCONSIN.

Letter; Patent No. 80,602, dated August 4, 1 868.

IMPROVEMENT IN BLEVATOR-BUGKETS.

the fitlgshulr rrfemh 1n iuflgtst itttters- 33mm amt mating and of tin stun.

Be it known that I, O. W. CLARK, of Appleton, in the county of Outagamie, and State of Wisconsimhave .invented a new and useful Improvement in Eleyatr-Bucket s; and do hereby declare that the following is. a

full,clear, aud-exuctdescription thereof, whichwill enable those skilled in the art to make and use the same, reference being bad to, the accompanying drawings, forming part of this specification.

The nature of my intention relates to improvements in elevator-buckets, the object of which is to make them more durable, less liable'to catch in the cases, and to make them of greater capacity.

The elevator-buckets, as at present constructed, are square at the top, presenting acute angles at the front corners, the sides being at right angles to the buck.

The elevator-cases in which they run are generally made square, and are-of considerable length, necessitilting the joining of the ends of the boards of which they are made.

It not unfrequehtly happens that these joints become loose and somewhat detached, the lower end of the upper board projecting-inward from the side of the case further than the upper end' of the lower board; and while the cases are constructed with considerable greater breadth than the buckets, to allow sufiicicnt freedom for the buckets, it not unfrequently happens that the belts become slightly twisted, whereby the buckets will swing around so as'to catch under at their outer corners these projections, the result of which is very disastrous to them, and it is found that when they do so they always bend or break at the angles. I

It also sometimes happens that the belts run untruly on their pulleys, audio-re thereby drawn to one side, whereby the same result occurs.

It sometimes also happensthat sticks or stones or other foreign matter get into-the grain,and get cramped between the buckets and thecases.

llowcver any undue strain may occur to the buckets, it is almost always found that they fail at the said i acute angles in strength.

They are also unduly curved from the front upper edge to the back lower corners, naturally lessening their capacity.

I have found that they do not require to be curved to a less circumference than that described by the front face of the buckets in going over-the pulleys, but instead of giving them a curved front face, I prefer, for economy of construction, to give them an inclination corresponding to such curvature, and providing a flat bottom, whereby their capacity is greatly increased.

I also construct them with rounded front corners, and narrower on the front face than on the back.

On reference to the accompanying drawings Figure 1 represents a side elevation of my improved bucket,

Figure 2 a perspective view, and

Figure 3 a side elevation of a bucket as commonly constructed.

Similar letters of reference indicate corresponding parts. I

In consequence ct being made narrower in front, as is shown in fig. 2, my improved bucket is not so liable to the before-mentioned catching-action on the sides of the case's and, by reason of the rounded corners, will not catch inth'e corners of the cases, and is very materially stronger, and the expense of two joints is also saved, and the capacity is increased by reason of the configuration of the front face and bottom.

I claim as new, and desire tosccure by Letters Patent The elevator-bucket, constructed inthe form herein shown and described, as and for the purpose set forth.

-O. W. CLARK.

Witnesses:

S. P. Twmo, H. W. Goose.

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