Improvements in Horse-shoes.
Year: 1892

page_text: Date of Application, 3rd May, 1892-Accepted, 4th June, 1892
COMPLETE SPECIFICATION.
[Communicated from abroad by CHARLES HAMMELMANN, of 200, Terrace Street,
and HENRY MEYER, of 292, Elm Street, both in the City of Buffalo,
County of Erie, and State of New York, United States of America, Manu-
facturers.]
Improvements in Horse-shoes.
I, HENRY HARRIS LAKE, of the firm of Haseltine, Lake & Co., Patent Agents,
45 Southampton Buildings, in the County of Middlesex, 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 that class of horse-shoes in which the calks are
removable so that they can be renewed when worn out.
The object of my invention is to provide a simple and secure fastening which
permits the calk to be readily detached from the shoe, when necessary.
In the accompanying drawing,
Figure 1 is an inverted perspective view of a horse-shoe embodying my
improvements.
Figure 2 is a fragmentary bottom plan view of the horse-shoe with the calks
removed.
Figure 3 is a cross section of the front portion of the shoe at the line, Figure 1,
which section extends along the front face of the toe-calk and shows the calks
being forced into place.
Figure 4 is a detached perspective view of the calk.
Figure 5 is a similar view to Figure 3, showing the calk with a flat or straight
top, instead of an inclined top, and fitting against a straight or flat bottom in the
socket of the shoe, instead of an inclined bottom.
Like letters of reference refer to like parts in the several figures.
A represents the body of the horse-shoe which is provided with the usual nail-
holes. B is a transverse lug arranged at the toe of the shoe on the underside
thereof, and c is a groove or socket formed lengthwise therein and which is
preferably tapered from its front toward its rear end, as shown in Figures 1 and 2.
E is the removable toe-calk seated in the socket.c of the shoe and tapered length-
wise to correspond to the taper of the socket. The calk is provided at its front or
inner end with a fastening lip or spurf which is bent inwardly around the rear end
of the lug or socket, so as to securely retain the calk in its socket. The fastening
lip is formed integrally with the calk and is bent around the end of the socket by a
cold shut, the calk being constructed of cast-steel or other metal which is sufficiently
malleable to permit the lip to be bent without breaking it. The lip is preferably
not hooked around the end of the socket, but is simply bent at an angle thereto
and made of sufficient length to project inward slightly beyond the inner face of
the socket when bent, so that the lip can be readily straightened by a hammer or
other suitable tool when it is desired to remove the calk from the shoe and insert a
new calk. The wall or jaw of the calk socket, around which the lip of the calk is
bent, preferably extends rearwardly a short distance beyond the junction of the
lip of the calk, as shown at c¹, so as to facilitate the bending of the lip and afford
access to the outer side for bending it. As the lip is malleable it can be bent
closely against the end of the socket so as to form a tight fastening which avoids
rattling of the calk in its socket, and in case the calk becomes loose in its socket it
is readily tightened by giving the lip a blow with a hammer.
The lip permits the calk to be conveniently locked in its socket and released
therefrom, and it forms a very cheap fastening as it is readily cast in one piece
with the calk. In order to more securely hold the calk in its socket, the latter and
the calk are curved lengthwise, the concave sides of the calk being preferably

page_text: toward the rear of the shoe. By this construction, the calk, in order to be removed
from its socket, must be moved in the arc of a circle concentric with the curved
walls of the socket. This tends to retard the lengthwise movement of the calk in
its socket and thus renders the calk less liable to become loose than would be the
case if the calk and its socket were straight. The curved form of the calk and its
socket permits a longer socket to be employed, if desired, than by the use of the
straight form, the length of the straight socket and calk being limited, while the
curved socket inay follow the curve of the shoe without projecting laterally beyond
the same, thus permitting the use of a longer socket, affording a larger bearing
surface for the calk and producing a more secure fastening. This curved form also
stiffens the lug in which the socket is formed and enables it to more effectually
resist the strains to which it is subjected. The curved form of the calk furnishes
not only a longer but also a broader base for the calk to rest on, because the
effective width of its base extends to a line drawn through the two inner corners of
the calk.
The curved form of the calk and its socket allows the calk to clear the head for
the adjacent horse-shoe nail in withdrawing and inserting the calk in its socket and
permits the calk to be introduced into and removed from its socket without
requiring the removal of the horseshoe-nail.
The calk and its socket are constructed of dove-tail cross section to hold the
calk against downward movement in its socket.
The bottom of the socket c may be, if preferred, inclined forwardly in the
direction in which it tapers and the top or upper surface of the calk be corre-
spondingly inclined, as shown in Figure 3. By thus inclining the contiguous faces
of the shoe and the calk, the blow or pressure of the calk against the pavement
drives the same farther into the socket, forcing it firmly against the converging
sides of the socket and wedging it more tightly into the same the greater the
impact of the shoe against the pavement. The inclining and contiguous faces of
the shoe and the calk may be omitted, if desired, and these faces made straight or
horizontal, as represented in Figure 5. The heel-calks are constructed in all
respects like the toe-calks.
Having now particularly described and ascertained the nature of the said
invention, and in what manner the same is to be performed, as communicated to
me by my foreign correspondents, I declare that what I claim is :-
:-
First. The combination with the body of the horse-shoe having a tapering
groove or socket, of a tapering calk seated removably in said socket and provided
at its narrow end with a lip or spur which is bent against the wall of the socket,
substantially as set forth.
Second. The combination with a removable calk having a fastening lip, of the
horse-shoe provided with a groove or socket for the calk having one of its walls
extending lengthwise beyond the opposite wall whereby the bending of such lip
against the projecting wall of the socket is facilitated, substantially as set forth.
Third. The combination with the horse-shce provided with a longitudinally
tapered groove or socket having curved side walls and open ends, of a tapered
calk curved lengthwise and removably seated in said socket, substantially as set
forth.
Fourth. The combination with the body of the horse-shoe provided with a
longitudinally tapered groove or socket having curved side walls, of a corre-
spondingly shaped calk arranged in said socket and provided at its narrow end
with a lip or spur which is bent against the wall of the socket, substantially as set
forth.
HASELTINE, LAKE & Co.,
45, Southampton Buildings, London, Agents for the Applicant.