Improvements in Calks for Horse Shoes.
Year: 1891

page_text: COMPLETE SPECIFICATION.
Improvements in Calks for Horse Shoes.
I, FERDINAND VON EULENFELD, of 6 Victoria Street, Breslau, Germany,
Master of Horse, 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 improved calks, as hereinafter described, are characterized by having an
clastic ring or cushion between the calk proper and the bottom part. This clastic
ring, which is compressed at each step of the horse, absorbs the concussion and
thus prevents the noise, which a horse, wearing the common shoes, produces when
running. The fixing of the elastic ring on the calk may be effected in different
ways. Some of the methods are shown on the drawing annexed, whereon:―
Fig. 1 is a longitudinal section.
Fig. 2 a top view, and
Fig. 3 a bottom view of one arrangement..
In this arrangement the calk is made with a screw m and a square nut h. It
has also a cylindrical pin a which projects downwards beyond the nut and is
flattened out at the bottom so as to form a kind of knob or head b. Over the
cylindrical part a and the head is pressed an elastic ring, say, for example, an
india-rubber ring. When the ring c is thus pressed into position the knob b
prevents it falling off. When the animal steps on the ground, the elastic ring c is
naturally compressed and elasticity is thus given to the step. For protecting the
elastic ring c from being torn on the surface, a flanged ring d is fitted between the
nut and the elastic ring c and a protection-case e is drawn over the rubber and
fixed to the ring d in such a way that the pins g, g' on said ring d go through the
corresponding slots of protection-case e, so that the casing e can slide telescopically
on the ring d. The case e may be provided with an opening at its under side.
The method of fitting the elastic protection-ring may, according to the arrange-
ment illustrated at Figs. 4 to 6, be so altered that one part of the calk can be used
for running on and be made to move towards the other part of the calk which is
fixed in the horse shoe.
Fig. 4 is a longitudinal section.
Fig. 5 a view from above.
Fig. 6 a view from below, of such an arrangement.
The elastic or cushion ring c¹ is fitted between the plate y and a plate on the
lower part of the calk. The plate g', which forms the treading surface of the
calk, is made with grooves k¹ to ensure a firm grip in the ground. The extension
or stud of the plate g is capable of moving in the calk . Said stud¹ is
reduced near m¹, so as to form a shoulder, and rivetted to a disc n¹. The lower
plate h³ serves as a counter pressure to the rubber-ring el. At the stepping of the
horse the movable calk plate gl gives way, by compressing the rubber-ring c¹, and
a very elastic step of the horse is thus produced. The calk is fastened by means
of a screw m' into the horse-shoc.
Figs. 7 to 9 show a different arrangement from that illustrated at Figs. 4 to 6.
Fig. 7 is the longitudinal section.
Fig. 8 a top view.
Fig. 9 a bottom view of the arrangement.
Here the rubber-ring c³ is pressed between a cap g² and a bottom plate 2 which
latter is fastened to the calk 2. The cap 92 is held by a stud which latter is, at
its upper end, rivetted to the calk 2 and its head holds the hollow cap g² with
adjoining piece in position. When the horse runs, the cap compresses the
rubber-ring c. The cap g² can go back into the cavity of calk, sliding on the

page_text: stud. When the cap is not pressed it is prevented from coming off the rivetted
stud 12. A cover o², screwed on to the cap, prevents any dirt entering the hollow
interior of said cap..
The construction Figs. 7 to 9 may be further modified by making the cover o
with a projection of (Figs. 10 and 11) which is screwed externally and is fitted into
the hollow of the cap y. which is made with a corresponding internal screw,
instead of, as before, screwing the cover on to the top of the cap. The screwed
projection of is made just long enough to permit the cap y² sufficient room to move
on the stud 2 without jamming against the head *.
The arrangements shown in Figs. 4 to 11 may be altered by fitting the elastic
ring in the interior of the calk so as to prevent any damage to it when the horse is
in motion. This style is shown at Figs. 12 to 15. Figs. 12 and 13 show one
arrangement and Figs. 14 & 15 another. The elastic ring c³ (Figs. 12 & 13) lies
in a cavity of the calk and is held by a stud g with enlarged head g³. The
head ghas, preferably, a strengthened band g on it. The stud g is held in its
position in the calk by means of the cap, which, when screwed in position on
the calk, grips the band g and prevents the stud falling out. The elastic ring c³,
which is, preferably, made of india-rubber, fits on the study. The calk is
hollowed at to admit of the movement of the stud so as to compress the rubber
ring.
In the arrangement Figs. 14 and 15, the stud 9 is held by means of a nut n³
screwed on its upper end. The nut n² fits into the screwed top m² of the calk ³,
which is hollowed for its reception. The arrangements Figs. 12 & 13 and Figs. 14
& 15 have the same action.
Having now particularly described and ascertained the nature of my said
invention and in what manner the same is to be performed, I declare that what
I claim is -
1. A calk for horse-shoes having an elastic ring or cushion (c) which is fitted on
a pin or stud (a) provided with a knob or head (), substantially as hereinbefore
set forth with reference to Figs. 1, 2 and 3 of the drawings annexed.
2. In calks for horse shoes, an elastic ring or cushion enclosed within a flanged
ring or plate (d) and a protection-case e, the case and ring being retained in their
proper relative positions by projections or their equivalent. (g), substantially as and
for the purpose hereinbefore set forth.
3. The modified construction of cushioned calk, substantially as hereinbefore
described with reference to Figs. 4, 5 and 6 of the annexed drawings.
4. The modified construction of cushioned calk, substantially as herein before
described with reference to Figs. 7, 8 and 9 of the annexed drawings.
5. The combination with the cap g² of a cover o³ having an internal screw as at
Fig. 7 or an external screw as at Fig. 10, substantially as and for the purpose
herein before set forth.
6. The modified construction of cushioned calk, substantially as hereinbefore
described with reference to Figs. 12 and 13 of the drawings annexed.
7. The modified construction of cushioned calk, substantially as hereinbefore
described with reference to Figs. 14, and 15 of the annexed drawings.
Dated this 2nd day of July 1891.
H. D. FITZPATRICK,,
70, Wellington Street, Glasgow, Agent.