Year: 1888

page_text: Date of Application, 2nd Jan., 1888
Specification Accepted, 3rd Feb, 1883
A communication from ALPHONSE DEGIVE, OI brussels, in the Kingdom of
Belgium, Veterinary Surgeon.
1, ALFRED JULIUS BOULT of 323 High Holborn, in the County of Middlesex,
M.I.M.E. 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 present invention relates to improvements in calks for horse-shoes and its
object is to design a calk which cannot unscrew itself.
In the accompanying drawings:-Figs. 1 and 2 represent a part of the horse-shoe
with the improved calk in side elevation and plan respectively.
The calk is preferably of a hexagonal or octagonal section and is perforated for the
reception of a split pin g which serves to prevent the ring b from falling off. This
ring b fits over the calk and adapts itself to the form of the calk, it is provided with
a lateral nose the end c of which is bent so as to engage in a recess or opening formed
in the horse-shoe to prevent the ring and with this the calk from turning.
The split pin g may be dispensed with and the ring b held in position by means of
a screw or a pin passed through the horse-shoe.
Or the split ping may be dispensed with and the ring may be made to support
itself as represented in figures 3, 4 and 5 by splitting the bent end c of its nose like
a dovetail and undercutting the opening in the horse shoe also like a dovetail. The
ring b may also be replaced by a simple fork the two branches of which bear against
two of the sides of the polygonal base of the calk to prevent this from turning as
represented in figure 6.
Or one branch of this fork may be dispensed with, the other bearing against one of
the sides of the calk as represented in figure 8.
Or the ends of the branches of the fork may be slightly bent inwardly and be made
as springs as represented in figure 7; in this case the lower edges of the calk may
be bevelled as shown in figure 9.

page_text: To hold the ring b, figures 1 to 5 in position on the calk and the shoe a ring of
india-rubber or other suitable material may be passed over the calk, when the ring b
is placed in position, and held on the calk in a groove formed therein. In this case
the split ping may be dispensed with and the bent end of the nose of the ring / need
not be split to engage in a dove-tailed opening formed in the shoe.
It is evident that the different parts may be made of any suitable material and of
any desired size; that the base of the calk may be formed of any desired regular
polygonal section.
Having now particularly described and ascertained the nature of the said invention
as communicated to me by my foreign_correspondent, and in what manner the same
is to be performed, I declare that what I claim is :-
1. A calk having a polygonal base locked by a ring held in position by the horse-
shoe and retained on the calk by a split pin passing through the calk, substantially as
and for the purpose described and illustrated in the accompanying drawings.
2. A calk locked by a ring which is held in position and fixed to the horse-shoe by
a screw or a pin passing through the horse-shoe substantially as and for the purpose
specified.
3. A calk locked by a ring retained in position and fixed to the horse-shoe by a
split nose engaging in a dove-tailed opening formed in the horse-shoe substantially
as and for the purpose specified.
4. A calk locked by a simple fork bearing against two sides of its polygonal base
and fixed to the horse-shoe by a split nose engaging in a dove-tailed opening formed
in the horse-shoe substantially as and for the purpose specified.
5. A calk locked by a single arm bearing against one of the sides of its polygonal
base and fixed to the horse-shoe by a split nose engaging in a dovetailed opening
formed in the horse-shoe substantially as and for the purpose specified.
6. A calk locked by a fork the branches of which act as springs and are slightly
bent inwardly at the ends, engaging under the bevelled lower edges of the base of
the calk, substantially as and for the purpose specified.
7. A calk locked by a ring retained on the calk by an india-rubber or other
flexible ring substantially as and for the purpose specified.
Dated this 29th day of December 1887.