Improvements in Horse-shoes.
Year: 1898

page_text: Date of Application, 31st Oct., 1898-Accepted, 14th Jan., 1899
COMPLETE SPECIFICATION.
Improvements in Horse-shoes.
We, CELINDA PORTER ROBINSON, Matron, of No. 2085, Fifth Avenue, Borough
of Manhattan, New York City, and Jonx WYATT OUTLAW, Engineer, of No. 50,
West 13th Street, Borough of Manhattan, New York City, both in the United
States of America, 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 horseshoes and has for its object to provide improved
means for securing a better foothold for horses on smooth or slippery pavements.
According to our invention calks consisting of toothed rollers are provided adapted
to revolve when relieved from pressure but locked when under pressure.
Figure 1 is an underneath face view of a horseshoe provided with a calk embody-
ing our invention in each heel; Figure 2 is a longitudinal vertical section of one
of the heels, on the line 2-2, and Figure 3 is a transverse vertical section of the
same on the line 3-3.
A horseshoe of ordinary construction except as to the heels, a, a, is shown. The
heels are made rather thicker than usual and in each heel is formed a slot or
pocket, preferably open only at its lower face, and of such size as to properly
accommodate a toothed roller c mounted therein. This roller, made of hard
material, as hardened steel, and having preferably eight points or teeth, is mounted
upon an axle b, shown as of square cross section, which passes transversely through
a larger square hole in the roller c, and fits tightly in the side walls of the
horseshoe. The hole in the roller c is of such size in relation to the axle 6 passing
through it, that the roller may turn easily on the pin when free from pressure, but
when the horse puts his foot on the ground, his weight upon the shoe locks the
roller against the axle, as shown in Figure 2, with two teeth touching the ground,
and thus prevents rotation of the roller, and the teeth of the roller give him a
firm hold upon the ground. In action the roller is revolved sufficiently to produce
substantially uniform use of and wear upon all of the teeth of the roller and thus
in the construction shown each shoe may he said to be provided with four sets
of hardened steel calks which will be separately, successively and uniformly
subjected to use.
In the preferred form of our invention the axle is set with diagonals in the
plane of the shoe and in a plane perpendicular to the plane of the shoe, as shown.
The axle may, however, be so set that its sides have any position desired, as with
two opposite sides parallel to the plane of the shoe and the other two sides
perpendicular thereto, without departing from our invention. The axle, instead
of being attached to the horseshoe and having the roller turn upon it, may be
attached to the roller and turn with it in an enlarged hole in the walls of the
horseshoe. The hole in the roller, where the axle is fixed, or the axle where
it is the movable part, may have a cross section which is a polygon of any desired
number of sides, and the axle, when fixed must have a lower surface angularly
shaped to engage and lock such polygonal opening under pressure, and the

page_text: polygonal opening in the side wall of the shoe, when the axle is movable, must
have an upper surface angularly shaped to engage and lock such axle under down-
ward pressure. The number of teeth to the roller would preferably be twice as
many as the number of sides to the polygonal hole or axle.
It is evident that many changes can be made in this device without departing
from our invention, for the toothed rollers, may be located elsewhere than in the
heels of the shoe; or the upper or side part of the slot may be opened, or the
shape of the axle and large hole therefor may be altered as above indicated.
Having now particularly ascertained and described the nature of our said inven-
tion, and in what manner the same is to be performed, we declare that what we
claim is:
1. The combination with a horseshoe of one or more calks constructed to revolve
when relieved from pressure but locked when under pressure, substantially as
set forth.
2. The combination of a horseshoe, a toothed roller adapted to revolve when
relieved from pressure, an angular or polygonal axle fastened to one of the parts,
the other of said parts having an angular or polygonal hole through which the
axle passes, but larger than the axle, so that the part having the hole and the
part having the axle can revolve relatively to each other when relieved from
pressure but are locked under pressure, substantially as set forth.
3. In combination with a horseshoe, a toothed roller having through it a
polygonal axle fastened to the shoe, substantially as described.
4. In combination with a horseshoe, a toothed roller in the heel thereof, having
through it a square hole, and mounted on a square axle fastened to the shoe,
substantially as described.
5. In combination with a horseshoe, a toothed roller in the heel thereof, having
through it a square hole, and mounted on a square axle, said axle being so set
that the diagonals of its square section are respectively in the plane of the
shoe, and in a plane perpendicular to the plane of the shoe, substantially as set
forth.
6. A revolving calk for a horseshoe constructed and adapted to be combined
therewith, substantially as shown and described.
Dated this 13th day of October 1898.
BOULT & WADE,
Agents for the Applicants.