Improvements in Power Presses for Compressing Copper Bands on Steel Projectiles and for other Purposes.
Year: 1889

page_text: Date of Application, 10th Sept., 1889-Accepted, 2nd Nov., 1889
COMPLETE DIECIFICATION.
Improvements in Power Presses for Compressing Copper Bands on
Steel Projectiles and for other Purposes.
We JOSEPH SAMUEL TAYLOR and STEPHEN WILLIAM CHALLEN both of Derwent
Foundry, Constitution Hill, Birmingham in the County of Warwick, Engineers, 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 :-
Our invention relates to the manner in which we construct and arrange a press for
operating upon any object such as a cartridge shell or other object or substance that
requires to be pressed or punched whereby we are enabled to give pressure in
different places and to form a complete circle if so desired by means of the different
tools which we attach to our press. The ordinary press as usually constructed is
provided with punches and pressing tools for operating in one plane and in one
direction whereas we are enabled by our improvements to arrange a number of pressing
tools or punches to act in a radial direction about a given centre, which centre forms
our bolster or die block when employing our press for punching holes.
In carrying our invention into effect when constructing a press for operating upon
cartridge shells to form a recessed neck or portion at one end we construct a frame
to receive and carry four shafts each running within suitable bearings the axis of
three of these shafts we arrange to lie in a circle about the fourth or centre one, and
we fix or form upon the central shaft a toothed pinion wheel which works into
toothed wheels fixed upon the other three shafts; that is to say the pinion upon the
central shaft drives each of the wheels upon the other shafts and thus the four shafts
revolve together.
The three driven shafts we form with cranks or eccentrics at one end to work into
slides or heads in the usual or ordinary manner and thus we are enabled to cause
the simultaneous movement of the three punches or tool holders by means of the single
driving central shaft. Of course we can arrange the driving shafts about the central
so that two or four pressing tools or punches can be operated from the motion of
the one central driving shaft.
We attach the pressing or swaging tool or punch to each ram or slide of the press
by means of our improved arrangement whereby we are enabled to adjust the punch
or tool without disturbing its true alignment with the slide.
In order that the nature of our invention and the manner of performing the same
may be properly understood we append hereunto 1 sheet of explanatory drawings to
be hereinafter referred to.
Figure 1 is a front elevation of our Improved Power Press for compressing
copper bands on steel projectiles. Figure 2 is a side elevation and Figure 3 is a plan
of the same.
On Figures 1, 2 and 3, A is the central driving shaft, B, C, D are the radial
driven shafts revolving in bearings a, b, c also in bearings a¹, b², c¹ formed within
the frames E and F of the machine, the ends of the shafts B, C, D are cranked or
formed into eccentrics which work into suitably formed slides G G G the central
driving shaft A carries fast and loose pulleys H, H', and a fly wheel K, also a
clutch L having a suitable lever for operating the same and the usual belt striking
gear for controlling the driving belt. Upon the shaft A is secured or formed a
pinion M which works into wheels N, N¹, N", carried by the shafts B, C, D, respectively;
and each of the slides G, G₁ G", we arrange to carry the tool or punch holder O by
means of studs or bolts g, g'. The detail drawing of the tool and holder we show by
Figures 4 and 5 where O is the tool or punch holder having a central circular hole P
with a rectangular space P¹ formed at the base or end of the circular hole and a
LD C

page_text: slotted hole h at the front. Within this circular hole P we place a cap or piston R
which serves to hold the punch or tool S in position the punch or tool S being shaped
with a portion of oblong section k (Figure 7) to suit the front of the holder and is
thus prevented from turning round."
Behind the cap or piston R we place a wedge T having a bent head through which
we pass a screw or stud U for the purpose of tightening or releasing the wedge-the
stud U being secured to the body of the slide G.
By this arrangement of carrying the tool or punch holder we are enabled to readily
adjust the tool or punch by means of the screw passing through the bent end Z of
the wedge T.
When it is desired to set forward the punch or other tool the nuts on the studs g, g
are first slackened and then the wedge T forced in by the outer nut on the screw U.
The nuts on g, g' are now screwed home and the punch or other tool is thereby fixed
firmly in its new position.
If, on the other hand, the punch is to be drawn back, the holding nuts on 9, g¹,
are slackened and the wedge T drawn back by the inner nut to the desired distance
and then the holding nuts on g, glare screwed home as before.
Figures 6 and 7 shew plan and elevation of another form of tool which we some-
times require for other work having a square end V.
Although we prefer this arrangement of tool or punch holder and the principle is
to compress, copper bands on steel projectiles, we do not limit the application of our
press to the particular purpose specified or to this system of punch or tool attachment
alone, but employ any ordinary or usual form of connection for the punch and punch
holder or use the press for other purposes when it is so desired.
Figures. 8 and 9 show our improved arrangement for driving a number of radial
slides by means of a long pinion M', or two shorter pinions, working into two sets of
toothed wheels N one behind the other upon the same revolving shafts or spindles.
By this arrangement we are enabled to drive six or more wheels as may be required
by means of the one central driving shaft or spindle A¹.
Having now particularly described and ascertained the nature of our said inven-
tion, and in what manner the same is to be performed we declare that, what
we claim is:
I. The combination of a central shaft with pinion driving three other shafts by
means of toothed wheels which shafts actuate radial slides carrying dies for the purpose
of compressing copper bands on steel projectiles.
II. The combination and arrangement of a press or machine whereby radial punches
or tools are caused to operate upon an object simultaneously as and for the purposes
herein before described and illustrated in the accompanying drawings.
III. The construction of a tool holder with an adjusting sliding wedge and block
as and for the purposes hereinbefore described and illustrated in the accompanying
drawings.
IV. The combination of sets of toothed wheels placed one set behind the other
driven from a single long pinion or a number of shorter pinions upon a central shaft
whereby a number of radial slides are simultaneously operated from shafts rotated by
the toothed wheels.
Dated this Oth dois of Contamhan 1000
MARKS & CLERK,
13, Temple Street, Birmingham, Agents for Applicants.