Improvement in Swaging Machines.
Year: 1890

page_text: COMPLETE SPECIFICATION.
Improvement in Swaging Machines.
1, JEROME CARLTON TAFT, of No. 10, West Clifford Street, Providence, Rhode
Island, United States of America, Mechanic, do hereby declare the nature of my
invention for IMPROVEMENT IN SWAGING MACHINES, and in what manner the same is
to be performed, to be particularly described and ascertained in and by the following
statement :-
Heretofore in swaging-machines it has been customary to employ a single set of
oppositely reciprocated dies thus materially restricting the range of work to which
the said machines were applicable, and it is the object of my invention to provide for
the employment of another set of oppositely reciprocated dies at right angles to the
former set, whereby the efficiency of the machine can be greatly extended; and my.
invention consists in the improved construction and arrangement of the sets of
swaging-dies, as hereinafter fully set forth.
Fig. 1, represents a front view of the machine showing the arrangement of the dies,
the front covering-plates which serve to hold the dies in position being removed.
Fig. 2, represents a vertical axial section of the machine.
Fig. 3, represents an enlarged longitudinal section of one of the forcers by means
of which the dies are operated.
Fig. 4, represents an end view of the same.
Fig. 5, represents an enlarged end view of the sets of dies separate from the
machine.
Fig. 6, represents an enlarged front view of the die-holding head.
In the accompanying drawings, A represents the frame of a rotary swaging-machine,
of ordinary construction; B the die-holding head which is provided with a hollow
shaft or shank C, upon which is placed the driving pulley D. The rotary die-holding
head B is provided with the cross grooves a, a, arranged at right angles to each other,
and within the said grooves are placed the sliding forcers E which are provided at
their outer ends with the bearing rollers b, the said rollers being adapted to engage
with the adjustable beaters F held in suitable grooves made in the annular flange c:
the forcers E and beaters F, being retained in proper position within their holding
grooves, by means of the retaining plates d and e, respectively, which are fastened to
the die-holding head B and frame A, by means of suitable screws.
The dies ffff, are arranged loosely within the inner portion of the grooves a a,
in advance of the sliding forcers E, the dies ff, which form one oppositely recipro-
cated set, serving to form a lateral guide for the dies f¹f, of the other set, one set
being arranged at right angles to the other, and both sets being adapted for simul-
taneous operation by the beaters. The loose blocks g g may also be placed in the
groove a at opposite sides of the thinner dies f¹f, to serve as a directing guide for
the same, and the outer end of the thinner dies can also be guided by resting within a
guiding groove h, made in face of the forcers E, by means of which the loose
dies are operated.
Instead of employing the forcers and detached dies as hereinbefore described, the
dies and forcers can be made in one piece; but in most cases I prefer to use the
separate forcers and dies.
The dies shown in the drawings are especially adapted for swaging the clearing-
grooves of drill-blanks, the dies ff, being provided with a longitudinal groove i
adapted to swage the edge of the drill, while the dies fi fare provided with a
rounded edge j, which is adapted to swage the grooves, and by changing the dies in
the machine for others of varying size or shape, the grooves of the drill-blank can be
carried to the required depth.
In swaging the drill-blank & shown in section in Fig. 6, the grooved guiding

page_text: dies ff, which operate upon the edge of the blank are arranged to have a very slight
movement, while the rounded dies, f, which form the groove have a much greater
movement, the engagement of the beaters F with the former set of dies being made
less than that of the latter, and by reason of the inequality of movement of the two
sets of dies, I am enabled to practically employ the dies of one set as a guide for
the dies of the other set, and this guiding arrangement of the dies and the unequal
movement, is especially adapted for the manufacture of grooved drill-blanks.
As shown in the drawings, the die holding head B is made to revolve while the
beaters are held stationary, but the die-head B may be held stationary while the
beaters are made to revolve, if preferred.
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. In a swaging-machine, the combination with the dic-holding head, of the sets
of dies arranged at right angles to each other, the inner faces of the dies of one sot,
being adapted to form a guide for the dies of the other set, substantially as described.
2. In a swaging machine, the combination with the die-holding head, of the sets
of combined forcers and swaging-dies, arranged at right angles to each other, sub-
stantially as described.
3. In a swaging-machine, the combination with the die-holding head, of the sets
of swaging-dies arranged at right angles to each other, the dies of one set being pro-
vided with a longitudinal groove, and the dies of the opposite set with a rounded edge,
substantially as described."
4. In a swaging-machine, the combination with the die-holding head, of the sets
of combined forcers and swaging-dies arranged at right angles to each other, and the
guiding-blocks at the opposite sides of the die, substantially as described.
5.-In a swaging-machine, the combination with the die-holding head, of the sets
of swaging-dies arranged at right angles to each other, the inner faces of the dies of
one set, being adapted to form a guide for the dies of the other sot, the said guided
dies having a greater movement, substantially as described.
6.-In a swaging-machine, the combination with the die-holding head, of the sets
of swaging-dies arranged at right angles to each other, the dies of one set being made
to have a greater movement than the dies of the other set, substantially as described.
Duted this 17th day of June 1890.
JEROME CARLTON TAFT.
Haseltine, Lake & Co.,
45, Southampton Buildings, London, Agents for the Applicant.