Improvements in and relating to Rollers and Pulleys for Collieries, and other purposes, and in the Boxes for same.
Year: 1894

page_text: Date of Application, 22nd Feb., 1894-Accepted, 7th Apr., 1894
COMPLETE SPECIFICATION.
Improvements in and relating to Rollers and Pulleys for Collieries,
and other purposes, and in the Boxes for same.
I SAMUEL SHEPHERD (the younger) of 24 Tipton Street, Brightside, Sheffield
in the County of York, Engineer, do hereby declare the nature of this invention
and in what manner the same is to be performed, to be particularly described and
ascertained in and by the following statement :-
This invention relates to improvements in the construction of rollers and pulleys
for colliery and other purposes, and to the metal boxes in which the rollers are
supported; the object being to construct a superior roller, and a box that will
throw off rain and dirt.
The accompanying sheet of drawings will clearly illustrate my invention.
Fig. 1, is a cross section of a roller made according to my invention.
Fig. 2, one of the barrel plates for same.
Fig. 3, similar section of another plan, with section of end plate.
Fig. 4, section of roller with inside lugs only, supporting a cylindrical barrel.
Fig. 5, section of barrel with short axle,
Fig. 6, section of barrel with long axle..
Fig. 7, sectional side elevation of improved box or case.
Fig. 8, front elevation of improved box or case.
Hitherto such rollers and pulleys have either been made by casting the body
and flanges in one piece, or by making the barrel of sheet iron and supporting it
in an annular groove formed in the end plates, which requires accurate fitting to
ensure a sound roller.
I propose according to one method to construct such rollers or pulleys (which
may be cylindrical or conical) as follows: see Fig. 1.
cast two end plates A, with a circle of segmental slots B, made concentric with
the axis C, and at a suitable distance from the edge, and I prefer to use two short
axles D, Fig. 5, either secured in position by casting the end plates upon them or
by screwing them into the plates, or by other like means; or a single axle D,
passing through both end plates may be used as shown in Fig. 6.
The body or barrel of the roller consists of a number of ribs, plates, or bars E
Fig. 2, each having its outer face rounded or curved to the segment of a circle, and
each end set down or reduced as at E, in width so as to fit into the curved or
segmental slots B, before mentioned.
I prefer that the said plates or bars shall not be of sufficient width to form a
complete circle, but when in position shall have an opening or space between each
plate. They are firmly secured by the end plates and finally by means of bolts or
studs F, passed through them, the nuts and heads being sunk into recesses G,
prepared for that purpose. The end plates are provided with openings I.
According to another method I may make the plates or bars with plain squared
ends, and instead of making segmental slots through the end plates, I cast upon
the inside faces a number of lugs H, shaped like the letter H, arranged concentrically
to the axle C, as seen in Fig. 3. The ends of the barrel plates fit between the
arms of the lugs H, and the parts are held together by bolts or studs as before
described.
Rollers so constructed can be readily cleaned and taken to pieces and any worn
or damaged part can readily be removed.
I may however construct these improved rollers by forming the barrel of sheet
iron or steel curved round to shave as J. Fig. 4. and upon the inner face of each

page_text: end plate A, I cast a series of inside lugs K, upon.or over which the ends of the
barrel J, are placed, and the whole secured by bolts as before.
By these methods of construction I avoid the expence of fitting the barrel into a
groove as heretofore.
The axles may, in any case be made short as in Fig. 5, and be secured in the
process of casting the end plate, and long axles as Fig. 6, and preferably made
square with round ends may also be secured in one end plate by casting as before
described.
Figs. 7 and 8, show a simple method of constructing the case or box of such
rollers, to keep the roller clean and to prevent the entry of rain, snow and dirt.
The case or box L, is usually made of cast metal open at both 'top and bottom,
and is provided with bearings to receive and support the shaft or axles D, of the
roller M.
I make the two side flanges N, of a curved form, and having an opening or
month O, between it and a bridge or bar P, which extends from side to side of the
box L, and has its centre part arranged to hold a removable nut Q, through which
I pass a screw bolt R.
A curved plate S, of suitable size and width is passed through the mouth Q, until
its front edge nearly touches the periphery of the barrel, where it is securely held
by the pressure of the screw bolt R, and thus any dirt that may be deposited by
the rope, or is otherwise gathered by the barrel of the roller or its flange is scraped
or taken off by the edge of the plate and falls down the surface and out at the
mouth.
The plates carry off rain and snow in a similar manner, and they may project
beyond the side of box if desired. They can be readily removed for cleaning out.
.the box.
I am aware that a roller has been made with a separate barrel of rolled metal,
held in a grooved flange on the end plates, and I therefore disclaim such particular
⚫construction.
Having now particularly described and ascertained the nature of my invention
and in what manner the same is to be carried into practice, I declare that what I
do claim is :-
1. A pit roller or pulley, the barrel of which is made of bars or plates with a
segmental outer face and the set down ends fitting into segmental slots formed in
the end plates, which are held together by bolts, or the like, substantially as herein-
before described and with reference to Figs. 1 and 2 of the drawings.
2. A pit roller or pulley, the barrel of which is made of segmental plates, the
-corners of which fit into openings of H shaped lugs cast upon the inner faces of the
end plates, which are held together by bolts, substantially as hereinbefore described
and with reference to Fig. 3; of the drawings.
3. A pit roller or pulley, consisting of a bent sheet metal barrel supported at
-each end upon a series of inside lugs cast upon the faces of the two end plates
which are firmly held together by bolts, as .hereinbefore described, and with
reference to Fig. 4.
4. The improved construction of box and means for keeping the roller clean and
the box face from dirt and the like, consisting of a curved plate S, fitted to and
held upon the side flange N, by means of a screw R, or its equivalent, the top edge
of the plate being close to the barrel M, or nearly so, substantially as herein before
-described and as shown in Figs. 7 and 8.
Dated the 2.1 1...
1004
ROBT. F. DRURY, C.P.A.,
Bank Buildings, George Street, Sheffield, Agent for Applicant.