Improvements in the Manufacture of Horse-shoe Calks.
Year: 1889

page_text: Da of Application, 24th ec.. 18.9-Accepted, 25th Jan., 18 0.
COMPLETE SPECIFICATION.
[Communicated from abroad by JOHN WITTS FOULKS, of Brooklyn, County of Kings
and State of New York, United States of America, Mechanic.]
Improvements in the Manufacture of Horse-shoe Calks.
I, OLIVER IMRAY, of No. 28 Southampton Buildings, in the County of London,
Fellow of the Institute of Patent Agents, 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 an improved method and apparatus for the manufacture of
horse shoe calks. .
Heretofore a bar of iron or steel has been first rolled of unequal thickness, next
passed between rolls adapted to form a continuous rib or tongue upon the wider side
of the bar, and then between rolls provided at intervals with cavities shaped to conform
to the required calk-spurs or teats, so that the rib on the bar is rolled down at all points
except where the teats or spurs are formed; the bars are finally subjected to swaging
or cold rolling for the purpose of hardening, lengthening and pointing the teats or
spurs so that they can more readily be driven into a heated shoe.
The object of my invention is to avoid the usual necessity for forming a preliminary
rib or tongue upon the calk-bar thus lessening the number of operations usually
required.
Fig. of the accompanying drawings is a side elevation of a pair of rolls for
bevilling a bar of iron or steel on one side.
Fig. 2 is a similar view of another pair of rolls for reducing the thickness of
the bevilled bar and at the same time forming a series of spurs or teats on one
side of it.
Fig. 3 is a side view of a third pair of rolls for hardening lengthening and pointing
the spurs or teats.
Fig. 4 is a section of one of the rolls for forming the spurs or teats.
I first pass a metallic bar between the rolls A B Fig. 1. The roll A has a groove c
with an inclined bottom and the roll B is a plain cylinder. By this operation the bar
is bevilled so that its sides are of unequal thickness.
The bevilled bar is.next passed between the rolls D E Fig. 2. The roll D has a
groove similar to the groove c but of less width and depth; and in its deeper side
are cut notches or cavities y of nearly the shape of the required calk spurs or teats.
The roll E is a plain cylinder. By passing the bar between these rolls D and E it is.
reduced in thickness and at the same time spurs or teats are formed by the side of the.
bar being squeezed into the cavities g.
I next pass the bevilled bar between the rolls HK Fig. 3 which are similar to the
rolls DE Fig. 2 in form and size but the side of the groove m has cavities p of greater
depth but less diameter than the cavities g, and the spurs or teats are thereby elongated
while the body of the calk-bar remains unchanged.
The cavities p are tapered so as to sharpen or point the calk-spurs, which are also
hardened by the compression to which they are subjected.
The calk-bars, which are thus made with spurs or teats at suitable intervals, are cut.
into suitable lengths to form the required calks.
The spurs or teats being formed on the wider side of the calk-bar afford a firm
support for the calk when the sharp and hard spurs or teats are driven into the
horse shoe.

page_text: 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 berein described method of preparing bars for horse-shoe calks, first, by
rolling a metallic bar to a bevilled form without ribs tongues or flanges, secondly, by
rolling this bar so as to form spurs or teats on one side, thirdly by again rolling so as to
strengthen harden and point the spurs or teats.
2. For preparing bars for horse-shoe calks, the use in succession of three pairs of
rolls one of each pair having a bevilling groove one of the second pair having also
notches or cavities for forming spaces on the bar, and one of the third pair having
such notches or cavities elongated and tapered to a point substantially, as
described.
;
: Dated this 24th day of December 1889.
.:
ABEL & IMRAY,
Agents for the Applicant.