US752907A

US752907A - of sandycroft

Info

Publication number: US752907A
Authority: US
Publication date: 1904-02-23
Anticipated expiration: 1921-02-23

Description

'No. 752,907. PATENTED FEB. 23, 1904. r

P. c. KELLY. TAPE-ET FOR THE SHAFTS 0F ORE STAMP MILLS, 8m.

APPLICATION FILED 0075.16, 1903.

N0 MODEL.

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Patented February 23, 1904.

PATENT OFFICE.

PHILIP COLVILLE KELLY, OF SANDYGROFT, ENGLAND, ASSIGNOR TO THE SANDYCROFT FOUNDRY COMPANY, LIMITED, OF SANDYCROFT,

ENGLAND.

TAPPET FOR THE SHAFTS OF ORE STAMP-MILLS, 81-0.

SPECIFICATION forming part of Letters Patent No. 752,907, dated February 23, 1904.

Application filed October 16, 1903.

To all whom, it may concern:

Be it known that I, PHILIP CoLvTLLn KELLY, assistant works-manager of The Sandycroft Foundry Company, Limited, a subject of His Majesty the King of Great Britain, residing at Sandycroft, England, have invented certain new and useful Improvements in Tappets for the Shafts of Ore Stamp-Mills and the Like, of which the following is a specification.

This invention relates to tappets for the shafts or stems of ore stamp-mills and the like, the object being to provide a tappet which can be fixed to the stem and be removed therefrom without interfering with any other portion of the mill or in the case of a shaft without re moving such shaft.

According to this invention the tappets, which are usually in the form of a cylindrical sleeve, are formed in two sections'one, the larger, being formed with a longitudinal gap at least equal to the diameter of the stem or shaft to which it is to be applied, the other or smaller section being formed to fit in and fill the gap in the larger section, the parts being drawn together and to the shaft or stem by cotters or pins.

In the accompanying drawings, Figure 1 is an elevation of a tappet as applied to the stem of a stamp-mill. Fig. 2 is a sectional plan View of same. Fig. 3 is a plan view of the larger section of the tappet; Fig. 4, a like view of the smaller section, and Fig. 5 an elevation of Fig. l.

In said drawings, 1 represents the stem or shaft, 2 the larger section of the tappet provided with the gap 3, while 4 represents the smaller section adapted to lit in gap 3 and to be held therein and to the stem 1 by means of the cotters or pins 5. The smaller section may have lugs 6 6 projecting from same and adapted to seat in recesses 7 7 in the larger section, so as to hold the parts in position for driving the cotters through their respective holes in the two sections. It will be seen that the smaller section, which is one.

solid piece, is forced against the shaft by the Serial No. 177,253. .(No model.)

cotters, the action of which also draws the larger section onto said shaft, so that the smaller section not only forms the gate or opening for introducing the shaft into the tappet, but also provides the locking device for securingsaid tappet thereto, no other devices, such as loose gibs driven up by cotters, being required, so that one part is made to do double duty, with the additional advantage that a larger area of grip is obtained from it than from the usual gib or like part. The larger section comprises also only one solid piece, the size of its gap beingsuificient, as stated, to allow of the introduction and removal of the Shaft.

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

1. A tappet formed of two sections, the larger having a longitudinal gap at least equal to the diameter of the shaft to which it is to be secured and the smaller section forming the gate being of a size to fit said gap and having a surface shaped to fit the shaft and means carried by said gate-section for forcing and holding it directly against the shaft.

2. A tappet formed of two solid sections, thelarger having a longitudinal gap at least equal to the diameter of the shaft to which it is to be secured, and a surface shaped to partly embrace said shaft and which shaft can be introduced and withdrawn through said opening, the smaller section being of a size to fit in said gap and having a surface shaped to fit all over that part of the shaft it touches, both of said sections having holes corresponding with each other, and a cotter adapted to seat in said holes and to draw the two sections together so as to grip the shaft between same.

In testimony whereof I have hereunto set my hand in the presence of two subscribing witnesses.

PHILIP COLVILLE KELLY.

Witnesses:

W. J. Sums,

WM. 0. Prnncn.