Improvements relating to Pneumatic Horse-shoe Pads.
Year: 1891

page_text: Date of Application, 23rd Nov., 1891
Complete Specification Left, 19th Aug., 1892-Accepted, 24th Sept., 1892
PROVISIONAL SPECIFICATION.
Improvements relating to Pneumatic Horse-shoe Pads.
I CHARLES SHEATHER, Fellow of the Royal College of Veterinary Surgeons,
Veterinary Surgeon, of 50, York Terrace, Regent's Park, London, do hereby
declare the nature of this invention to be as follows:-
This invention has reference to a pad for attachment to horses' feet, in respect of
which I have made application for Letters Patent under No. 17911, Nov. 7/90.
This pad, which is of rubber or some such elastic material, and which I have
termed a pneumatic pad, from the fact that it is hollow, and depends for its
resilience upon air imprisoned, or partially so, between it and the foot, is, by my
first invention, provided with a flange of textile fabric or leather, such flange being
gripped between the foot and the metal shoe, to secure the pad in position. The
entire space between the foot and the pad, in that case constitutes the air
chamber.
According to my present invention, I attach the hollow rubber pad, by sewing
and cement, or other suitable means, to a sole of leather, which may be applied to
the foot, and secured between it and the shoe, exactly as an ordinary leather sole,
the application of which is well understood by farriers.
Thus, the air space is formed between the pad and the leather sole, which
arrangement affords means for regulating the resilience of the pad, as may be
necessary, according to the formation of the foot to which it is applied. For
instance, with hollow feet, there is no necessity to provide an air escape from the
pneumatic pad, and' consequently the maximum resilience of the elastic pad, and
the air imprisoned therein, may be made available. With somewhat flat feet,
however, it is not desirable to allow the pad to remain too greatly protruded
when the foot touches the ground. An air escape is therefore provided by piercing
a hole, or holes in the leather sole at the upper side of the pad."
These holes may, by their number and size, be arranged to allow the air to
escape to the upper side of the leather with any desired rapidity, so that there
will be no difficulty in adjusting the pad to the requirements and peculiarities of
different feet.
The attachment of the pad to a sole of inelastic material, such as leather,
moreover, prevents lateral expansion of the pad under pressure, which might have
a tendency to prize the metal shoe away from the foot, and loosen the nails.
The pad, as propose to employ it, is provided with a narrow flange
around it, merely wide enough to receive stitches, nails, screws, or other means
of attachment, and is formed on its outer or convex side with flutings.
A central rounded ridge will receive the first impact with the ground, while
ridges on either side thereof will bite subsequently on the roadway, and give
additional security to the tread.
Across the heel portion of the pad there is a solid bar of rubber which lies a
little above the ground surface of the metal shoe.
The edges or flanges of the pad may be strengthened with webbing, or similar
fabric, attached thereto, if desired.
Dated this 23rd day of November 1891.
NEWTON & CONT
NEWTON & SON,
Agents for the Applicant.

page_text: COMPLETE SPECIFICATION.
Improvements relating to Pneumatic Horse-shoe Pads.
I CHARLES SHEATHER, Fellow of the Royal College of Veterinary Surgeons,
Veterinary Surgeon, of 50A York Terrace, Regent's Park, London, 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 has reference to a pad for attachment to horses' feet, in respect of
which I have obtained Letters Patent No. 17911, dated November 7th 1890. This
pad, which is made of moulded rubber-compound, or some such elastic material, and
which I have termed a pneumatic pad, from the fact that it is hollow, and depends,
for its resilience, upon air imprisoned, or partially so, between it and the foot, is,
by my first invention, provided with a flange of textile fabric or leather, such
flange being gripped between the foot and the metal shoe, to secure the pad in
position. The entire space between the foot and the pad in that case constitutes
the air chamber.
According to my present invention, I attach the hollow rubber pad by sewing
and cement, or other suitable means, to the face of a leather sole, which may be
applied to the foot, and secured between it and the shoe, exactly as an ordinary
leather sole, the application of which is well understood by farriers.
In the accompanying drawing :-
Fig. 1 is a plan view of the ground side of the pneumatic pad, the horse shoe
with which it is to be used being shewn in place.
Fig. 2 is a cross section, on the line aa of Fig. 1.
Fig. 3 is a longitudinal section on the line y y of Fig. 1, and
Fig. 4 is an elevation of the heel of the pad.
A is the hollow pneumatic pad, of rubber or equivalent material, convex on the
ground surface, and concave within. a is a rim or flange around the pad, preferably
backed with textile fabric, moulded into the rubber, and extending some distance
into the pad. The rim a serves for attaching the pneumatic pad A to a leather
sole B, by means of screws, nails, stitching, or otherwise, and its proportions are
such, that it will lie well within the span of the shoe. bare holes in the leather
sole, for bringing into communication the hollow in the pad with the hollow in the
horse's foot. The number and size of these holes will be determined by the degree
of flatness of the foot, their object being to regulate the passage of air to and
from the interior of the pneumatic pad, and to secure the proper elasticity of the
same.
C is a metal shoe of ordinary form, provided with nail holes for attaching it, and
the leather sole carrying the pneumatic pad, to the horse's hoof.
The attachment of the pad to a sole of inelastic material, such as leather,
prevents lateral expansion of the pad under pressure, and as its flange does not
underlie the shoe, the tendency of the pad, under pressure, to prize the metal shoe
away from the foot, is avoided.
The pad is formed, on its outer or convex side, with longitudinal flutings, with
the object of reducing the tendency to slip as much as possible.
A central rounded ridge will receive the first impact with the ground, while
ridges on either side thereof will bite subsequently on the roadway, and give
additional security to the tread.
Across the heel portion of the pad there is a solid bar of rubber, which lies a
little above the ground surface of the metal shoe.
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
1. The combination of a hollow pneumatic pad and a sole of inelastic material,
4

page_text: in conjunction with an ordinary metal horse shoe, substantially as described with
reference to the drawing.
2. In the manufacture of pneumatic horse shoe pads, the application to the face
of a leather or other inclastic sole, of the flanged elastic pad A, arranged to yield
to the pressure of the horse's foot, as and for the purpose above set forth.
Dated this 15th day of August 1892.
NEWTON & SON,
Agents for the Applicant.