IMPROVEMENTS IN THE MODE OF MAKING METALLIC HAMES FOR HORSES.
Year: 1857

page_text: LETTERS PATENT to John Talbot Pitman, of the American and European
Patent Offices, 67, Gracechurch Street, London, for the Invention of
"IMPROVEMENTS IN THE MODE OF MAKING METALLIC HAMES FOR HORSES.".
PROVISIONAL SPECIFICATION left by the said John Talbot Pitman at
the Office of the Commissioners of Patents; with his Petition, on the
11th February 1857.
I, JOHN TALBOT PITMAN, of the American and European Patent Offices,
67, Gracechurch Street, London, do hereby declare the nature of the said
Invention for "IMPROVEMENTS IN THE MODE OP MAKING METALLIC HAMES FOR
HORSES," a communication from a citizen of the United States of America, to
be as follows:
It consists in the construction of .die rollers to be arranged consecutively in
pairs one above the other. These die rollers are formed of suitable metal,
and are circumscribed by a series of steel or other hard metal rings, in which
dies are previously cut, and which, when necessary, can be removed & others
substituted. Also in the construction and arrangement, in front of the first.sot
of the 'die rollers, of a pair of feed rollers having angular, grooves, with stops'at
one end, for the purpose of guiding the iron bar into the forming dies. Also
in the track or guide to conduct' the iron bar or hame from one, set of die
rollers to the next.

page_text: SPECIFICATION in pursuance of the conditions of the Letters Patent, filed
by the said John Talbot Pitman in the Great Seal Patent Office on the
11th August 1857.
TO ALL TO WHOM THESE PRESENTS SHALL COME, I, JOHN
TALBOT PITMAN, of the American and European Patent Offices, 67, Grace-
church Street, London, send greeting.
WHEREAS Her most Excellent Majesty Queen Victoria, by Her Letters
Patent, bearing date the Eleventh day of February, in the year of our Lord
One thousand eight hundred and fifty-seven, in the twentieth year of Her
reign, did, for Herself, Her heirs and successors; give and grant unto me, the
said John Talbot Pitman, Her special licence that I, the said John Talbot
Pitman, my executors, administrators, and assigns, or such others as I, the
said John Talbot Pitman, my executors, administrators, and assigns, should
at any time agree with, and no others, from time to time and at all times
thereafter during the term therein expressed, should and lawfully, might make,
use, exercise, and vend, within the United Kingdom of Great Britain and
Ireland, the Channel Islands, and Isle of Man, an Invention for "IMPROVE-
MENTS IN THE MODE OF MAKING METALLIC HAMES FOR HORSES," a communication
from a citizen of the United States of America, upon the condition (amongst
others) that I, the said John Talbot Pitman, my executors or adminis-
trators, by an instrument in writing under my, or their, or one of their hands
and seals, should particularly describe and ascertain the nature of the said
Invention, and in what manner the same was to be performed, and cause
the same to be filed in the Great Seal Patent Office within six calendar
months next and immediately after the date of the said Letters Patent.
NOW KNOW YE, that I, the said John Talbot Pitman, do hereby declare
the nature of my said Invention, and in what manner the same is to be per-
formed, to be particularly described and ascertained in and by the following
statement, reference being had to the Drawings:-
Figure 1 representing an end view, Figure 2 a perspective view, and
Figure 3 a partial front view of the apparatus.
The same mark denotes similar parts:
The Invention consists in the construction of metallic rollers arranged in
pairs one above the other, (Figures 1, 2, 3, and operated by means of cogged
gearing, as shown at Fig. 1. Those rollers are circumscribed by a series of
steel or other hard metal rings, in which the dies are cut, before they are placed
upon the cast-iron rollers, by means of screws or other suitable fastenings.
This method of forming dies is far more expeditious and perfect in form than

page_text: any of the old process, such as cutting the dies in chilled rolls; or setting steel
dies into slots or dovetails made in the roller, either of which takes much time
and labor; and another great advantage is derived from my method of forming
dies, viz., in case any of the dies should be broken or injured in any way, it
may readily be replaced by another ring die at a trifling expense compared to
those in common use; next, two feed rollers (E, E',) are employed one above
the other (and immediately in front of the die rollers), having angular grooves
(a, a',) and stops (b, 6',) at one end thereof, for the purpose of guiding the
iron bar into the forming dies or rollers (1;2); a track or guide (d, d';) placed
between the die rollers (^), B) conducts the iron bar or hame into the second
A,
set of dies, as shown in Figure 3.
The, operation of making a hame may be thus described:---Take a small
bar of iron as near the size as possible, cut it off the desired length, set the
machine in motion, then place one end of the bar in the angular groove at (a)
against the stop (6), that delivers it into the sizing dies (1) on rollers (A)
at the proper point; the bar is conveyed by the rollers (^)) into the next set
of rollers by means of the guides (d), Fig. 3, and so on until it passes through
any desired number (four are preferred) of sets of dies; the bar is then placed
upon its edge into the feed rollers opposite the hame dies, and passed through
the combination of dies and rollers similar to the process of sizing the bar.
After the bar has passed through the consecutive rollers the second time, it
becomes transformed into a well proportioned hame with the end loops
complete, there being a countersink or punch in the ends of each set of dies,
as shewn at (s, s, s,) Figs. 2 & 3. The draft eyes are formed upon the same
rollers similar to the hame, and are attached to it by a single blow from a
vertical or drop hammer. The terrets for the reins to pass through are also
attached to the hames in a similar manner. The superiority of the Invention
consists in the production of a metallic hame perfectly smooth and of uniform
proportion, and ready for plating direct from the machine, thus doing away
with the laborious task of filing, which is always necessary when hames are
wrought by hand.
The above described machine will be suitable for making various other
articles, by varying the shape & position of the dies to suit the article to be
manufactured.
Having now described the Invention and its advantages as communicated
to me, what I claim under the herein-before in part recited Letters Patent,
is,―

page_text: First, the combination of consecutive; rollers (A, B, C, D, &c.,) having dies
1, 1, 1, 1, 2, 2, 2, 2,
(2) for the purpose of forming the individual parts of the
11, 11, 21, 21, 21, 21,
articles.
Secondly, the dies cut in-separate rings or bands in the manner and for the
purpose substantially as described.
Lastly, I claim the feed rollers (E, E',) having the angular grooves (a, a',)
and stops (b, 6',) for the purpose of guiding the bar or rod to the proper point
in the dies (1,2,2,) in the manner and for the purpose, set forth.
In witness whereof, I, the said John Talbot Pitman, have hereunto set
my hand and seal, on this Tenth day of August, in the year. of our Lord 1
One thousand eight hundred and fifty-seven..
JOHN TALBOT PITMAN. (L.S.)