Year: 1887

page_text: Date of Application, 21st July, 1887
Complete Left, 19th May, 1888
Complete Accepted, 22nd June, 1888
I, LUDWIG SCHEIB of Kaiserslautern, in the Empire of Germany, Master-Smith,
do hereby declare the nature of this invention to be as follows:-
This invention relates to horse shoes and consists in the manner of connecting calks
to or in the shoe.
For this purpose, suitable pits are made in the required places of the shoe and the
calks are provided with extending tongues fitting into said pits. In the tongue of the
calk is a lateral catch forming part of or governed by a spring set in the calk in such
a manner that the catch projects normally beyond the side of said tongue, but may be
compressed to lie flush with or below said side surface. This catch engages into a
corresponding recess in the pit, when the tongue of the calk is placed therein. Either
said recess is continued outwardly in the material of the shoe and is open to the outer
end to admit of a suitable tool such as a straight bar or the like, being inserted
to arrive against the nose of the catch, or a suitable guide channel is made for such
a tool to be inserted so as to bear against the catch or spring in such a manner as to
enable said catch to be driven back from its recess by said tool, while the calk is
withdrawn from the shoe.
HERBERT & Co.,
Agents to Applicant.

page_text: COMPLETE SPECIFICATION.
Improvements in and relating to Calks of Horse Shoes.
I, LUDWIG SCHEIB of Kaiserslautern, in the Empire of Germany, Master-Smith, do
hereby declare the nature of the 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 horseshoes and consists in the manner of connecting calks
to or in the shoe, with the object that the said calks may be made by machinery,
perfect duplicates of one another, and so that they can be readily taken and replaced
when worn. In this way the ordinary wear and tear upon the under surface of a shoe
takes effect entirely upon the face of the calks, so that one shoe will suffice for the
wearing out of many sets of calks without removal from the horses' hoof.
In order that my invention may be the better understood, I now proceed to describe
the same in relation to the drawings hereunto annexed, reference being had to the
letters and figures marked thereon.
Like letters refer to like parts throughout the drawings.
Figure 1 is a plan of my improved horse shoe fitted with calks.
Figure 2 is an outsido elevation of same.
Figure 3 is a longitudinal section through the same.
Figures 4, 5 and 6 are two outside elevations and a transverse section respectively
of a calk removed from the shoe and shown in detail.
To carry out my invention, I pierce holes or pits A A in the body of the shoe, these
pits being preferably square or rectilinear in shape so as to permit the stem of the
calk to fit therein, and be prevented from turning. The calks B B are constructed of
hard metal such as steel, which may be tempered after construction, and are provided
with stems or tongues CC fitting into the aforesaid pits or holes in the shoe, and
with shouldered tread pieces D D, which project below the under surface of the shoe,
and thus act as calks to the said shoe. In the said stems or tongues CC of the calks
is fitted a spring catch E E, which is firmly set in the calk, and lies in a recess cut
therein, so that it is free to spring back within the body of the calk, but normally
lies flush on the face of the calk, the top end being bent over and projecting sufficiently
to engage on the body of the shoe. When the stem or tongue of the calk is introduced
into the shoe from below, the spring tongue is pressed back during introduction and
springs forward and engages on to the body of the shoe as soon as the calk is home
in piace.
I find this arrangement of spring to be simpler and more easily made than the
employment of a separate catch, spring pressed from behind in the body of the calk,
which however is obviously an equivalent device.
A slight recess may be made in the body of the shoe at the side of the pit to receive
the aforesaid bent point of the spring catch, so as to allow the upper surface of the
shoe against the hoof to be fairly flush.

page_text: To remove the calk, the end of the spring catch resting upon the said bevelled recess
in the shoe may be forced back by prising out the calk by application of a chisel,
wedge or other suitable instrument to the shouldered portion of the calk below the
shoe. The calk may be thus removed and renewed sets may be driven into the shoe,
in place of the worn calks which have been removed, while the shoe is still upon the
hoof of the horse, the spring catch automatically engaging when the calk is driven
home, so that it is thus prevented from again falling out; or should there be difficulty
in removing the calk while the shoe is on, the spring can be pressed back and the calk
driven out with ease from the upper face of the shoe after the shoe is removed.
Having now particularly described and ascertained the nature of my said inven-
tion and in what manner the same is to be performed, I declare that what I
claim is :-
1st. The combination with a horse shoe of removable calks fitted in the former with
a spring catch so as to be removable when worn and even whilst the shoe remains
upon the horse's hoof substantially as described.
2nd. The construction of horse shoe calks consisting of a shouldered head face,
provided with a stem and spring catch fitting into pits in the body of the shoe,
substantially as described.