Improvements in and connected with the Axle-bearings and Wheels of Pit Corves, Part being applicable to other Wheels and Pullies.
Year: 1896

page_text: Date of Application, 19th May, 1896
Complete Specification Left, 19th Feb., 1897-Accepted, 17th Apr.. 1897
ISIONAL
Improvements in and connected with the Axle-bearings and
Wheels of Pit Corves, Part being applicable to other Wheels
and Pullies.
We SAMUEL SHEPHERD the younger of 24 Tipton Street Engineer, and
EDWIN SHEPHERD of 22 Tipton Street Sheet Roller, both of Brightside near
the City of Sheffield do hereby declare the nature of our invention to be as
follows:-
We propose to construct our improved bearings as follows: The upper part of
the bearing terminates with a short pin or axis upon which the bearing can turn
for self adjustment.
The lower part is made open to receive the brass or renewable part of the
bearing against which the axle rests, and we propose to use an under bearing piece
secured in position by a bolt or key.
Immediately between the bearing brass and the axis before mentioned, we
construct an oil chamber having a communicating tube to the top of the brass and
to the axle neck.
In constructing a wheel the object we have in view is securing the wheel
firmly to the axle, and a ready method of substituting a new tyre or rim for a
worn one.
We make the boss and the arms separate from the rim or tyre, and according to
one arrangement we cast the rim with a series of double lugs which radiate towards
the centre point, and we cast a corresponding number of similar lugs upon the boss,
and the arms which preferably consist of short pieces of flat bar iron or steel are
held between the said double lugs and are secured in position by short bolts passed
through the lugs and the arms.
The arms may if preferred be cast with the boss, and their outer ends be secured
in the lugs of the rim as aforesaid.
The boss of the wheel is divided through one side longitudinally into the centre
hole, and transversely through this side we pass a bolt or cotter which projects to
some extent into the centre hole, and a corresponding groove is made across the
axle to receive the part which so projects.
Thus when the nut upon the bolt or cotter is screwed up the split boss is caused
to contract and close upon the axle, and the bolt or cotter engaging with the
groove prevents any rotary or longitudinal movement of the axle, and this part of
the invention may be applied to other wheels, pullies, or spur gear.
1
1000
ROBT. F. DRURY, C.P.A.,
Bank Buildings, George Street, Sheffield, Agent for Applicants.

page_text: Improvements in and connected with the Axle-bearings and
Wheels of Pit Corves, Part being applicable to other Wheels
and Pullies.
We SAMUEL SHEPHERD the younger of No. 24 Tipton Street, Engineer, and
EDWIN SHEPHERD of 22 Tipton Street, Sheet Roller, both of Brightside near
the City of Sheffield do hereby declare the nature of this invention and in what
manner the same has to be performed, to be particularly described and ascertained in
and by the following statement :-
The invention hereinafter described is illustrated in the annexed sheets of
drawings.
Figs. 1. 2. 3. 4, are elevations of corve wheels made according to my invention.
Figs. 5. 6. 7, are sections of removable rims.
Figs. 8 & 9, are improved bearings for the axles of such wheels.
In carrying out our invention relating to axle bearings we make the upper part
of such bearing with a pin or axis A upon which it can turn for self adjustment,
see Fig. 8.
The brass B, is fitted into the lower part, and we extend the two sides below the
brass with an opening C, to receive a metal plate D, which is bent to the form
shown, in position, by the application of force, or we may use a plate E, Fig. 9.
curved to form and pin-jointed to one side of the bearing.
We sometimes use a detachable oil or grease box inserted into a recess formed
in the top part of the bearing with one or more passages to the axle.
In constructing corve wheels the objects we have in view are securing the wheel
firmly to the axle, and providing a ready method by which a new tyre or rim may
be substituted for a worn one.
We therefore make the hub or boss of the wheel and the arms separate from the
rim or tyre, and according to one arrangement shown in Fig. 1, we cast upon the
rim F, a series of double lugs G, which radiate towards the centre, and we cast
upon the hub H, a corresponding number of similar lugs G³.
The arms I, are preferably short pieces of bar iron or steel held between the sets
of lugs, and are secured in position by means of short bolts J, passed through the
lugs and the arms.
Or as in Fig. 2, the arms I, may be cast upon the hub H, the ends of the arms
being dovetailed, and the rim of the wheel is prepared with dovetailed recesses into
which the ends of the arms fit and are secured by bolts or screws passed through
plates K, either cast upon the arms or used separately.
In Fig. 3, we cast lugs upon the rim, and prepare the hub with holes preferably
screwed, into which we insert the ends of the arms, and the opposite ends we secure
to the lugs on the rim.
The arms may be adjusted and secured firmly by the use of lock nuts L.
In Fig. 4, we construct the rim in two parts M, and M2, which are afterwards
bolted together at N; segmental recesses are made to receive the arms P, which
are correspondingly formed with a segmental connection Q, to fit into the recess in
the rim.
The hub of the wheel is divided through one side longitudinally into the centre
hole, and transversely through this side we pass a bolt or cotter R, which projects
to some extent into the centre hole, and a corresponding groove is made across the
axle to receive the part of the cotter or bolt which projects into it.
A pinhole may be made in the segment Q, and a pin S, upon the rim fitting into
the hole, by which the arms are held in position.

page_text: According to another method not illustrated we make a solid rim, and taper or
cone the interior, and we cast the hub and the arms with a light rim divided into
sections, the arms being curved to permit of expansion or contraction.
Lugs are cast upon the rim or tyre and when the arms are placed in position and
forced into the coned rim by the action of bolts passed through the arms and the
lugs, the segments or sections of the light rim before described are closed or
brought together, and preferably grip a pin or lug projecting from the inside of the
rim. The hub is divided through one side as before described, and when the nut
is screwed up the divided boss is caused to contract upon the axle and grip it
with great power, the bolt or cotter preventing any lateral or rotary motion.
This part of the invention may be applied to other wheels, pullies, or to toothed
wheels.
Figs. 5. 6 and 7, illustrate three methods of securing circular "treads " T, to the
rims of wheels which may be removed when worn.
Having now particularly described and ascertained the nature of our inven-
tion, and in what manner the same is to be performed, we declare that what
we claim, is:-
1. The improvements in and connected with the axle bearings, and the wheels
of pit corves, and of other wheels, herein before described and set forth.
2. The construction of axle bearings for pit corves, as hereinbefore described
and shown.
3. The improved construction of wheels for pit corves and other purposes, having
removable rims to enable them to be replaced as herein before described, and as
shown in Figs. 1, 2, 3, 4, of the drawings.
4. A pit corve wheel or like wheel, the tread of the wheel being detachable from
the rim, substantially as hereinbefore described and shown in Figs. 5, 6, 7, of the
drawings.
ROBT. F. DRURY, C.P.A.,
Bank Buildings, George Street, Sheffield, Agent for Applicants.