Improvements in Apparatus for Forging Spurs.
Year: 1892

page_text: Date of Application, 6th Aug., 1892-Accepted, 1st Oct., 1892
COMPLETE SPECIFICATION.
Improvements in Apparatus for Forging Spurs.
I, JULIUS RAFFLOER, of Iserlohn, Westphalia, in the Kingdom of Prussia and
German Empire, Lieutenant, do hereby declare the nature of this invention, and in
what manner the same is to be performed, to be particularly described and ascer-
tained in and by the following statement :-
This invention relates to apparatus for forging spurs from previously prepared
blanks, in which the forging is limited to the arms of the spurs and the production
of the curvature required in the finished article.
I will describe my improvements with reference to the accompanying drawings in
which,
.
Figure 1 is a front elevation of the apparatus,
Figures 2 and 24, plans and end views respectively of the previously prepared
blanks, and
Figures 3 and 3*, plans of the completed forgings.
The apparatus is mounted upon a strong base or support Z, above which is fixed
a powerful fly screw-press similar to the screw presses commonly used with dies
and punches. The screw h of this press carries at its lower end the die or former g
which can be brought down with great force by the rotation of the weighted
arms ii or an equivalent fly-wheel. In the base Z, there are mounted two strong
parallel vice jaws bb' which have the peculiar shape shewn in Figure 1 of the
drawings. These jaws are arranged to swing upon pivots ff and are thus capable
of assuming the position indicated by the dotted lines. The position of the jaws
is controlled by the disc c pivoted to the base at a, having the two excentric slots ee
formed therein, and a handle x. Upon each of the jaws there is fixed a steel pin d
in such a position as to engage in a corresponding slot e of the disc c.
construction and arrangement, when the handle is moved in the direction indi-
cated by the arrow, to the position shewn in the figure, the jaws will be fully
opened, and when the handle is moved in the opposite direction, the jaws will be
closed together as indicated by the dotted lines.
By this
The die or former g, is provided with a hook or projection upon each
side and it may have a recess or cavity m at the bottom for the purpose herein-
after described. The die g and the opposed faces of the jaws will have such
shapes and dimensions as may be required for the size and style or form of the
spurs to be produced.
In operating the apparatus the blanks are heated, and are successively placed
with their vertical members between the closed jaws as shewn by the figure
at zkr. To enable the blanks to be more accurately placed and securely held,
semi-circular grooves may be formed in the opposed faces of the jaws, and the
blanks be placed in these grooves. As soon as a blank has been inserted between
the jaws, the handle x is lifted in the direction indicated by the arrow, and at
the same instant the screw press is set in motion, thereby bringing the die g down
upon the blank. As the die descends, the jaws open, and the blank is forced down
between them and is firmly pressed between the die and the jaws where it assumes
the finished form shewn by Figures 3 and 34.
At the completion of the operation, the hooks or projections will be found to
have penetrated into the inner sides of the limbs z z, so that when the die ascends,
by the reversal of the screw press, the forging will be lifted with it and may then
be detached by a light blow with a hammer.
The blanks may be formed from round iron or steel, in which case the vertical
limb will be circular, and the arms semi-circular in cross section, and the grooves in
the opposed faces of the jaws will be correspondingly shaped.

page_text: In some cases it is necessary to leave or provide in the finished forging a
central arm or projection such as k. This may be of square or of any desired
cross section, and the before mentioned recess m in the bottom of the die is pro-
vided to receive it.
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. An apparatus for forging spurs, constructed arranged and operated substan-
tially as herein before described and as illustrated by the accompanying drawings.
2. In an apparatus for forging spurs, pivoted vice jaws, shaped and adapted
to seize the blank and upon being opened to form the outer curvature of the
spur arms, in combination with a vertically moving die between which and
the vice jaws the arms of the spur are shaped, and a handled, disc engaging with
the jaws, substantially as hereinbefore described and as illustrated by the accom-
panying drawings.
3. In an apparatus for forging spurs, a die g, having thereon two lateral hooks or
projections, constructed and arranged substantially as and for the purpose herein-
before described and as illustrated by the accompanying drawings.
Dated this 4th day of August A.D. 1892.
WILLIAM E. HEYS,
Agent for the Applicant.