AN IMPROVED CONSTRUCTION OF COMBINED METAL AND CAOUTCHOUC HORSE- SHOE
Year: 1878

page_text: LETTERS PATENT to Gerard Wenzeslaus von Nawrocki, of the Firm of J.
Brandt and G. W. von Nawrocki, Civil Engineers and Patent Agents, of
No. 2, Koch Strasse, Berlin, in the German Empire, for the Invention of "AN
IMPROVED CONSTRUCTION OF COMBINED METAL AND CAOUTCHOUC HORSE-
SHOE." A communication by Otto von Ruville, of Bruchsal, in the Grand
Duchy of Baden.
Sealed the 16th July 1878, and dated the 24th January 1878.
PROVISIONAL SPECIFICATION left by the said Gerard Wenzeslaus von
Nawrocki at the Office of the Commissioners of Patents on the 24th January
1878.
GERARD WENZESLAUS VON NAWROCKI, of the Firm of J. Brandt and G. W. von
Nawrocki, Civil Engineers and Patent Agents, of No. 2, Koch Strasse, Berlin, in
the German Empire. "AN IMPROVED CONSTRUCTION OF COMBINED METAL AND
CAOUTCHOUC HORSE-SHOE." [A communication by Otto von Ruville, of Bruchsal,
in the Grand Duchy of Baden.]
This Invention relates to an improved construction of horse-shoes having
caoutchouc combined therewith in such manner that while the metal shoe is secured
directly to the hoof by nails in the usual manner, a thick caoutchouc pad is attached,
without nailing or rivetting, to the outer surface of the metal shoe, so as to be
firmly combined therewith, and to bear directly upon the ground. By this means
the difficulties heretofore attendant on the use of caoutchouc in combination with
horse-shoes are obviated, while a more efficient and yet not more expensive shoe
than those of ordinary construction is afforded.
For the above purpose a soft steel plate is cut to the shape of an ordinary horse-
shoe, but with projecting parts on its inner and outer edges, which parts are bent up
at right angles to the other part of the plate. The plate having been fixed on the
hoof by nailing, a thick strip or pad of caoutchouc, having the same form as the
shoe, is inserted between the projections on the outer face of the latter, and the
projections are then bent inwards by means of pincers, so as to nip the caoutchouc
CD 31

page_text: between them, whereby the caoutchouc is securely fastened to the shoe. Other
projections are also formed on the outer edge of the steel plate, which are bent
upwards over the edge of the hoof, so as to hold tho plate securely in position.
The caoutchouc pad is by preference made of dovetail form in cross section, so
that it will be dovetailed into the space formed between the overhanging projections 5
on the shoe..
SPECIFICATION in pursuance of the conditions of the Letters Patent filed by
the said Gerard Wenzeslaus von Nawrocki in the Great Seal Patent Office
on the 17th July 1878.
"
1 * *
GERARD WENZESLAUS VON NAWROCKI, of the Firm of J. Brandt and G. W. von
Nawrocki, Civil Engineers and Patent Agents, of No. 2, Koch Strasse, Berlin, in
the German Empire. "AN IMPROVED CONSTRUCTION OF COMBINED METAL AND
CAOUTCHOUC HORSE-SHOE." A communication by Otto von Ruville, of Bruchsal,
in the Grand Duchy of Baden.
This Invention relates to an improved construction of horse-shoes having
caoutchouc combined therewith in such manner that while the metal shoe is secured
directly to the hoof by nails in the usual manner, a thick caoutchouc pad is attached,
without nailing or rivetting, to the outer surface of the metal shoe, so as to be
firmly combined therewith, and to bear directly upon the ground. By this means
the difficulties heretofore attendant on the use of caoutchouc in combination with
horse-shoes are obviated, while a more efficient and yet not more expensive shoe
than those of ordinary construction is afforded.
For the above purpose a soft steel or iron plate is cut to the shape of an ordinary
horse-shoe, but with projecting parts on its inner and outer edges, which parts are
bent up at right angles to the other part of the plate. The plate having been fixed
on the hoof by nailing, a thick strip or pad of caoutchouc, having the same form as
the shoe, is inserted between the projections on the outer face of the latter, and the
projections are then bent inwards by means of pincers, so as to nip the caoutchouc
between them, whereby the caoutchouc is securely fastened to the shoe. Other
projections are also formed on the outer edge of the plate, which are bent upwards
over the edge of the hoof, so as to hold the plate securely in position.
The caoutchouc pad is by preference made of dovetail form in cross section, so
that it will be dovetailed into the space formed between the overhanging projections
on the shoe.

page_text: The plate A made of the shape of the horse's hoof is made with wings a
projecting on each side, to be afterwards bent down and a little over inwards, so as
to clamp between them the caoutchouc pad B, which is made of dovetail shape in
section, and which is placed on the plate A, and secured by the bending over of the
wings a after the plate has been nailed on the hoof C. Other wings b, b, may be
provided on the plate A, to be bent upwards over the edge of the hoof, so as to
prevent displacement of the shoe, these wings b being most serviceable on the front
of the hoof, as shewn in the Figures.
In securing the said shoe on the horse's hoof, the plate A, with the wings a
turned down, is nailed on to the hoof; the pad B, which has previously been
accurately shaped to the plate and warmed, is then inserted, and the wings are bent
over with a pair of pliers, so as to grip the pad, as shewn at Fig. 4, the wings being
by preference roughened on their outer surface to afford better hold for the pliers.
As the wings are inclined somewhat towards the pad it will be seen that the tread
of the horse will only tend to secure the wings tighter against the pad.
The improved horse-shoes, besides being as cheap if not cheaper than ordinary
shoes, more particularly when these are roughed, are more easily and quickly fixed,
one particular size of pad being, on account of its elasticity, applicable to several
sizes of hoofs; they prevent hoof diseases, affording an elasticity of tread which
protects the hoof and prevents slipping on pavement or ice; and lastly, they are
noiseless.
If the frogs project considerably a small wedge may be inserted between the
plate and the pad at the ends of the hoof, so as to raise the pad somewhat.
Having thus described the nature of the said Invention, and in what manner the
same is to be performed, as communicated to me by my correspondent, I claim the
construction, substantially as herein described, of a horse-shoe, consisting of a plate
of iron or steel nailed on the hoof in the usual way, and holding, by means of bent
over wings, a pad of caoutchouc of dovetail section.
In witness whereof, I, the said Gerard Wenzeslaus von Nawrocki, have here:
unto set my hand and seal, this Second day of July, in the year of our
Lord One thousand eight hundred and seventy-eight.
GERARD WENZESLA TIS
".
NAWROCIZI
GERARD WENZESLAUS v. NAWROCKI. (L.S.)