Improvements in Horse-shoe Calks.
Year: 1898

page_text: Date of Application, 10th Mar., 1898--Accepted, 16th Apr., 1898
COMPLETE SPECIFICATION.
Improvements in Horse-shoe Calks.
We, JAMES BARNES, of the City of Detroit, County of Wayne, and State of
Michigan, United States of America, Manufacturer, and MERRILL B. MILLS, of the
said City of Detroit, County of Wayne, and State of Michigan, United States of
America, Manufacturer, 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 :-
Our invention relates to improvements in removable horse shoe calks, and it is
shown in the accompanying drawings in which
Figure 1 is a view showing a horse shoe provided with calks of the class to which
this invention belongs.
Figures 2, 3, 4 and 5 are vertical sectional views showing different forms in which
the invention may be used.
In the drawings A represents the horse shoe and B the calk. These calks are
made of steel and consist of the body b reduced in size at the lower portion and
provided at the upper extremity with the shoulder b¹ around the shauk b². This
shank is threaded and screws into a threaded hole tapped in the shoe. The object of
the invention is to provide means by which the shank, after the body of the calk is
worn away, may be unscrewed from the shoe while the latter is on the horse's hoof.
For this purpose one or more openings or depressions are formed through or in the
shank and upper part of the body, with which a tool may be engaged to unscrew
the shank. In the form shown in Figure 2, a square hole is used, extending through
the shank and down into the body a sufficient distance to be exposed when the body
is worn off. In the opening a square key may be inserted to unscrew the shank.
In the form shown in Figure 3 a transverse hole 63 is bored through the body close to
the shank. In the form shown in Figure 4, the shank and shoulder of the calk is
provided with a channel 62 on each side with which nippers, suitably constructed,
inay be engaged even when the body is all worn away. In the form shown in
Figure 5 the shank and upper end of the body are provided with a cross cut 65 with
which the tool may be engaged as in the other forms. More than one cross cut may
be used. In this form the shank loosens in the shoe when the calk is worn off up to
the cross cut.
When constructed after any of the forms shown herein, or in equivalent construc-
tion, the remnant of a calk may be removed by the use of a suitable key or
pair of nippers, something after the manner in which a dentist extracts a
tooth.
Having now particularly described and ascertained the nature of our said
invention and in what manner the same is to be performed, we declare that what
we claim is :-
1. A removable horse-shoe calk provided with means with which a tool may be
engaged to remove the remnant from the shoe after the body is worn away substan-
tially as described.

page_text: 2. A horse-sboe calk adapted to screw into the shoe, provided with means with
which to engage a tool for unscrewing the remnant of the calk after the body is worn
away substantially as described.
3. A horse-shoe calk adapted to screw into the shoe provided with a channel with
which a tool may be engaged for unscrewing the remnant after the body is worn
away substantially as described.
4. A removable horse-shoe calk provided with an opening through the shank with
which to engage a key when the body is worn away to or near to the opening sub-
stantially as described.
5. A removable horse-shoe calk provided with a shank adapted to enter the
shoe, said shank provided with one or more cross cuts substantially as
described.
D. YOUNG & Co.,
11 and 12, Southampton Buildings, London, W.C.,
Agents for the Applicants.