Year: 1887

page_text: 1, JERVIS SPENCER, residing in the County of Baltimore, near the City of Baltimore,
in the State of Maryland, one of the United States of America, Lawyer, 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 :---
The object of this invention is to provide a horse shoe with readily-fitted, removable
calks, whereby the horse may be easily fitted for travelling, either rougli or smooth
shod as desired, according to the state of the weather or roads.
In describing my invention reference should be had to the drawings which
accompany this specification in which :-
Fig. 1 represents a view of the under side of a horse shoe with the calks attached.
Fig. 2, part of a horse shoe in section, showing the calk in place, secured by a nut
which is locked by a pin.
Fig. 3, is a view of part of a shoe showing the side which lies next to the hoof, the
opening for the calk and the socket, with the calk resting within the socket.
Fig. 4, is an illustration of part of the lower side of shoe showing the pointed end
of calk, the nut, and locking pin.
Fig. 5, is a view of part of a shoe in section, showing the bolt in place, and the
|calking point and nut formed in one piece and screwed upon the bolt.
Fig. 6, is a view of part of a shoe showing the side next to the hoof, the shape of
the opening, the socket and countersunk edges of the opening.
Fig. 7, is an end section of part of a shoe showing the calking piece in position, a
pin through the calking piece and a washer, between the pin and the lower part of
the shoe, this view illustrates a modification by which my device may be used without
the nut.

page_text: Fig. 8, shows a modified form of socket for the calk, running across the opening
about midway instead of one side; also the calk in place.
Fig. 9, shows a bottom view of the calking piece, pin, and washer.
Fig. 10, an end section of shoe with bolt, and flat or square calking piece screwed
thereon.
Fig. 11, a side view of part of shoe with calk and nut, and a pin passing through
the calking piece through a groove in the upper part of the nut.
In carrying out my invention I proceed as follows:
Through an ordinary horse shoe I make a hole of the shape and form shown at A,
Figs. 3 and 6 upon the upper side of the shoe, I cut out a portion as shown at a¹ to
enable the upper end of the calking piece to turn at right angles to its position when
inserted, and cut it down a short distance so that it may form a socket into which the
calking piece will drop when turned around and be held in place by the walls of the
socket a².
The calking piece is formed in the shape of a bolt, the upper part of which is
enlarged on one or two sides and bevelled, so as to fit into the socket of the shoe, the
shape of the bolt when viewed on top would be approximately that shown in the
orifice A in Figs. 3, 6 and 8; the bevelled sides of the enlarged top are shown in
Figs. 7 and 10, marked . Upon the lower part a thread is cut marked in the
drawings, upon this thread is screwed the nut.
It will be seen that when a shoe is on the hoof of the horse, the calking piece may
be inserted in the hole, pushed up to the top, then turned at right angles, and drawn
into the socket in this position it is prevented from turning by the walls of the
socket a², and whilst in this position the nut is screwed upon the bolt securing it
rigidly in place, the lower part of the boli protrudes below the nut, and may be
squared, flattened or pointed as shown in Figs. 1 and 2 a hole through the bolt
about on the line of the lower part of the nus allows of the insertion of a pin to lock
the nut and prevent it from turning whilst in use.
Instead of applying my invention to use in the exact way above described, I have
shown in the drawings several modifications of form; for example, instead of
allowing the end of the bolt to protrude below the nut as shown in Fig. 2, a combined
nut and calking piece may be used as shown in Figs. 5, 10, and 11, in such cases the
calking piece is screwed to the end of the bolt and is locked by a pin driven through
the bolt, between the calking piece and the lower side of the shoe, passing in a groove
in the calking piece or shoe or both placed there for the purpose; or the pin may be
dispensed with, allowing the nut alone to hold the calk in place, or the nut may be
dispensed with and a stout pin alone, driven through the bolt just below the shoe may
be used a washer may be added between the pin and shoe as shown in Figs. 7 and 9.
The socket need not be placed at one end of the aperture in the shoe but
located about midway thereof as shown in Fig. 8.
The calking piece may be made of steel and tempered if desired.
may
he
Having now particularly described and ascertained the nature of my said invention
and in what manner the same is to be performed, I declare that what I claim is :-
1-A calking piece for a horse shoe, made in the form of a bolt, with its upper end
enlarged on one or more sides in combination with a shoe having an aperture of a
form to admit the calking piece in one direction, and having a socket in the upper
part of the shoe provided with walls to prevent the calking piece from turning into
which the enlarged end of the calking piece will enter when turned, and means below
the shoe, for fastening and securing the calking piece rigidly in place, substantially
as described.
2-A calking piece for a horse shoe made in the form of a bolt, with its upper end
enlarged on one or more sides in combination with a shoe having an aperture of a

page_text: form to admit the calking piece and a socket in the upper part of the aperture to hold
the calk in place, and the nut 2, substantially as shown.
3-A calk for a horse shoe, adapted to enter an aperture in the shoe from below the
aperture provided with a socket on the upper side, to retain the calking piece, in
combination with the pin 3 passing through the calking piece below the shoe to
secure it.
4-A calking piece for a horse shoe consisting of a bolt with an enlarged end
adapted to enter an aperture in the shoe from below, the aperture having a socket on
the upper side to retain the enlarged end of the bolt in combination with a combined
mut and calking piece as shown.
A calking piece for a horse shoe made in two pieces one a bolt with an enlarged
head, and the other a nut to be secured on the end of the bolt below the shoe, in
combination with a shoe having an aperture of a form to admit the bolt from below,
and so constructed above, as to hold the head or enlargement of the bolt.
6-A horse shoe in combination with a calking piece arranged and operating
together, substantially as described.