US320760A - Elevator-bucket - Google Patents

Description

(No Model.)

W. H. 8u W. J. CLARK.

BLEVATOR BUCKET.

No. 320,760. 'PatentedJ'une 2s, 1885,

WZZz'amH/Zark .Wi-.ZZ f5/Zark NITED STATES PATENT OFFICE.

WILLIAM H. CLARK AND WILLIAM J. CLARK, OF SALEM, OHIO.

ELEvAToR-BUCKET.

lLaPECIFICAJIION forming part of Letters Patent No. 320,760, dated June 23, 1885.

Application filed April 15, 1885.

To all whom t may concern.-

Be it known that we, WILLIAM H. CLARK and WILLIAM J. CLARK, both of Salem, Columbiana county, Ohio, have jointly invented new and useful Improvements inv Elevator'- Buckets, of which the following is a specification.

Our improvements are more particularly designed for the class of sheet-metal elevatorbuckets illustrated in our Patent No. 222,665, granted December 16, 1879, and are directed to securing enhanced efficiency and durability, coupled with greater economy of manufacture bya construction that comprises, first, a peculiarly formed and applied interior re-cnforce or strengthening plate at the part of the bucket by which it is attached to the driving-belt and on which the most severe strain is thrown when in use; second, a peculiarly formed and attached brace 5 third, a series of peculiarly formed and attached teeth.

In `the accompanying drawings, Figure l is a perspective view of an elevator-bucket embodying our present improvements. Fig. 2 is a transverse section of the same. Fig. 3 is a side view of our brace as it appears before attachment to the body. Fig. 4. is a transverse section of said brace. Fig. 5 is a side view of a tooth as it appears before attachment to the body. Fig. G is a transverse section of such tooth. Fig. 7 is a sectional view of such tooth as it appearsafter attachment to the body, which latter is likewise shown in section. Figs. S, 9, and l0 represent as many slightly diverse forms of our bucket for different uses.

A represents the body of a wrought-iron or other metallic bucket for elevators.

Permanently fastened by rivets B to the front surface of the rear wall of said body, so as to have its upper edge flush with that of the said body wall, is an interior plate or re-enforce, O, having wings or prolongations D, which, extending around the concave surfaces of the rear angles and spreading over portions of the body ends, are fastened to said ends by means of rivets B. The holes a for the rivets that attach the bucket to the driving-belt eX- tend through said interior reenforce and through the contiguous portion of the body.

E represents a brace having the lozenge- (No model.)

formed transverse section, (indicated in Fig.4,) so as to possess knife-edges e. The said brace has collars c of corresponding Obliquity to that of the body walls, and extending from each collar two spurs, e, which, having been inserted in corresponding orifices, a', in the body walls, are clinched or riveted on the outside thereof, as shown at c.

The bucket -mouth is armed at its front edge with teeth F, of the plano-convex and lanccolate form shown-that is to say, having fiat rear and crowning front faces-and `each having a spur, f, and a shank, f which, being thrust into the respective orifices a a in the body wall, are clinched on its inner side in the manner shown.

The interior strengthening-plate or re-enforce O, formed and applied in the manner represented in Figs. l, 2, and S, affords increased substance at the back and the rear corners of the bucket-body, its location on the inside of the rear wall causing it to receive the direct stress of the rivet-heads, which are thereby prevented being torn loose, whereby elevator-buckets so frequently become disengaged from their driving-belts.

The ends of the Ire-enforce plate being extended and warped around the interior rear angles so as to overlap the same and portions ofthe bucket ends,and being riveted to the latter, very materially both stiffen and strengthen those parts of the bucket that are subject to the greatest strain in use.

The brace E is more cheaply attached than are those whose attachment to the bucket-body depends on separate rivets, while its knifeedges e offer but slight obstruction to material entering or leaving the bucket.

For' handling of ground bark Aand like intractible material liable to accumulate and become packed within the boot or lower part of the elcvator,the-front edge of our bucket is preferably armed with teeth F, as above described.

For special purposes buck ets may be usefully manufactured with one or more of the above improvements-for example, a useful form for some purposes of elevator-buckets is shown in Fig. 8, which ligure illustrates a bucket provided with our rc-enforce C, but lacking IOO the brace E and the teeth F. Again, other useful forms are represented in Figs. 9 and l0, in which buckets are respectively shown with our knife-edged brace E and with our teeth F.

Ve are aware that the rear margins of some elevator buckets have been re-enforced interiorly by narrow strips of metal which have lined the back, but have not lined either the inner rear angles or the heads, and thatthe margins of other elevator-buckets have been bound or hooped eXteriorly. We therefore disclaim such re-enforces, broadly considered.

Ve claim as new and of our inventionl. In an elevator-bucket, the combination, with body A, of the interior strengtheningplate or re-enforce,G D, applied and attached to the inner rear and ends and perforated to receive the belt-rivets, as set forth.

2. In an elevator-bllcket, the combination,

with body A, of the brace E, having theupper and lower knife-edges,e, the collars e,and the spurs e, which spurs are clinched or riveted to the body in the manner set forth.

3. In an elevator-bucket, the combination, with body A, of the plano-convex teeth F, whose spurs fand shanksf are clinched to the bucket-body in the manner explained.

4. In an elevator-bucket, the combination, with body A, of the re-enforce C D, the brace E e e e e, and the teeth F, substantially as set forth.

In testimony of which invention we hereunto set our hands.

VILLIAM H. CLARK. WILLIAM J. CLARK. Attest:

W. W. HOLE, W. H. DAGGETT.

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