Year: 1888

page_text: HENRY GREENWOOD Of Albion works, Leeds in the County of fork,
do hereby declare the nature of this invention to be as follows:
This invention relates to a novel arrangement of machinery for heating cartridge
cases, and, when required, tapering the same.
The machine may be described as consisting of a rectangular frame of cast iron,
having horizontal guides or ways for a slide, in which a die is mounted for the
reception of the cartridge case to be operated upon.
This slide is actuated by being connected with two cranks of a horizontal crank
shaft mounted in the main framing.
At one end, this crank shaft carries a pair of fast and loose belt pulleys, and at the
other end it is fitted with a brake wheel.
The centre of the slide is grooved to receive a second slide, which carries the
punch to receive the case to be headed, and this second slide is connected with a
central crank on the crank shaft, having a shorter throw than the cranks of the main
slide.
Opposed to the die and punch is a "bunting tool," or counter die, fixed
adjustably on the main frame, and intended to resist the pressure of the travelling die
and punch.
The cases to be headed are fed to the machine by hand or otherwise, and rolling
down an inclined plane, they are received onto a grooved slide, which places them
immediately below an elastic claw carried by a rock lever. This claw takes up the
cases as they are severally presented to it, and, on the feed slide withdrawing, it
descends, and presents the open end of the case to the advancing punch, retiring when
the case is caught by the punch.
The die and punch advancing together under the action of the crank shaft, will
force the head of the case against the counter die or bunting tool, spread the metal
laterally to form a flange, and cause it to fill a rebato or counter bore made in the die,
to allow of the die fitting over the counter die. By this advance of the die, a proper
stamping pressure for the flange is obtained.

page_text: On the completion of the flanging, the slides are drawn back, the main slide, by
reason of its cranks, having a longer throw than the crank of the punch slide, retiring
more quickly than the punch, and thus partially releasing the case from the dic.
A pair of extractor claws is now brought into action to grip the case, hold it firmly
while the punch is retiring, and then, when the case is clear of the punch, dropping it
into a receptacle below.
The extractor claws form the extremity of two rock levers, each of which is pro-
vided with a sector rack in gear the one with the other.
The fulcrums of these levers are carried by a sliding frame to which an endway
motion is given by a horizontal rock lover actuated by a grooved cam.
This cam is mounted on a horizontal cam shaft, which is driven by mitre gear from
the crank shaft, and it is by means of another cam on the same shaft acting upon a
rod attached to one of the two rock levers carrying the claws, that the claws are
operated to grip and release the headed case. Other cams on the same cam shaft
serve to operate respectively the grooved slide and the elastic gripper, which together
servo to feed the cases into the machine.
By substituting a taper die and a suitable punch for those used in heading the
case, the case may be tapered, all the movements of the machine being the same as
those above explained.
For arresting the action of the machine, the belt shifter bar is furnished with rack
teeth, which gear into a pinion keyed to a vortical shaft. This shaft rests in an
adjustable step bearing carried by a brake lover, which, as its shorter arm is depressed,
will raise a brake block into contact with the brake wheel.
The vertical shaft carrying the pinion for operating the belt shifter is furnished
with a screw which enters a threaded bearing in a bracket bolted to the main
framing. A hand lever fitted to the top of. this shaft is provided to give an axial
motion thereto. When, therefore, the shaft is turned, it will also be raised or
depressed by reason of its screw connection with the fixed bearing. Thus, when
the belt shifter is caused. to throw the belt onto the loose pulley, the shaft will at
the same time, by its endway motion, force the brake block into contact with the
brake wheel, and thereby cause the rapid absorption of the momentum of the crank
shaft.
On reversing the movement of the hand lever, the driving belt will be shifted from
the loose to the fast pulley, and at the same time the brake wheel will be released from
its friction block.

page_text: which has a transverse groove, segmental in cross section, for the purpose to be
presently explained.
The opposite edges of the inclined face of the table, and also the lower end
thereof, have flanges which are designed to retain in position the cases placed upon
the feeding table by the attendant, and ensure their severally rolling down and
falling through a transverse opening in the inclined face of the table, onto the
slide the groove in which is brought under the opening to receive the
cases, and to present them severally to a spring clip G, which carries them to
the punch 6.
This sliding plate F is connected by a short link to the free end of a radius
arm fulcrummed on the main framing. The arm F2 is fitted with a bowle
which enters the groove of a face cam F³, shown detached at Figs. 7. This
cam is keyed to a cam shaft H, which receives its motion through mitre wheels from
the crank shaft C.
By the rotation, therefore, of this shaft, a traverse motion will be given to
the sliding plate F¹, and thus the cases will be presented in succession to the
spring clip G.
The spring clip consists of a pair of jaws g g, which fit, and are capable of sliding,
in a socket formed at one extremity of an arm G, keyed to a rock shaft, mounted in
bracket bearings on the top of the framing.
The jaws of this spring clip G are held together by a spring within the socket, and
are so shaped as to open, when pressed down upon the case, which they are intended
to grip and remove from the sliding plate.
A short arm G* of the rock shaft is connected by a rod G' with an arm G'
fulcrummed on a stud projecting from a bracket of the framing.
A bowle fitted to this arm is held, by means of a spring, in contact with a cam G³,
keyed to the cam shaft H.
The spring clip is so situato with respect to the dies (see Figs. 1 and 4), that when
rocked, its jaws will come down between the movable and fixed dies, presenting the
case, which it has taken from the sliding plate, to the advancing punch in line
therewith.
The action required from the cam G³, is therefore, first to bring down the spring clip
onto the case as it rests in the groove of the sliding plate, lift it therefrom, and then
carry it down to the advancing punch, and having delivered it to the punch, to rise
quickly out of the way of the advancing die.
The form of this cam is shown in the diagrams, Fig. 8.
As the slides B B complete their advance, the metal at the head of the case will
be caused to expand laterally, and fill the rebate in the die b, as shown at Fig. 5;
thus a flanged head will be produced under the moving pressure of the dio b, and the
resistance of the counter die 62.
The heading of the case being now completed, the slides B B' will retire; the
slide B, by reason of the greater throw of its cranks, retiring more quickly than
the slide B', under the action of its short-throw crank.
By this means, the case will be exposed to view, while still upon the punch, but
in order to release it from the punch, an extractor 1, of peculiar construction, is
brought into action.
This extractor is provided with a pair of claws, so shaped, that when advanced
to seize the case, they will grip it firmly immediately behind the flanged head.
The extractor claws form the extremity of two rock levers i, each of which is
provided with a sector rank in gear the one with the other.
The fulcrums of these levers are carried by a sliding frame 1', working through the
main framing of the machine. This frame is connected by a link to a horizontal rock
lever 12, fulcrummed on a bracket of the main framing, and carrying a bowle which is
acted upon by a cam 13 keyed to the cam shaft H.
14 is a cam on the same shaft, shown detached at Figs. 9, acting upon a rod³
pivotted to the lever, and serving to rock that lever, and consequently, through
the sector gearing, the lever i¹, to produce the grip of the jaws on the case, and

page_text: to release it when the punch is withdrawn therefrom. The extractor comes into
action immediately on the exposure to view of the headed case, consequent on the
retirement of the die b.
The extractor, as soon as it has gripped the case, has a horizontal motion given
to it in the opposite direction to that in which the slides are moving, as shown
in the diagram, Fig. 10, and by this means, the case is withdrawn from the retiring
punch.
When the case is clear of the punch, the jaws of the extractor relax their grip
on the case, and retire in the diagonal directions indicated by the arrows, until
they reach their normal position, as shown at Figs. 1 and 4.
By this arrangement it will be seen that the crank shaft does not require so
great a throw as would be the case if the extractor claws remained stationary.
When the extractor is advanced to grip the case, it will hold it firmly against
the drag of the retiring punch 6, and not until the case is clear of the punch,
will the extractor release its grip, and allow the headed case to fall into a receptaclo
below.
By substituting a taper die, and a suitable punch, such as those shown at
Fig. 6, for the die plate band punch used in heading the case, the tapering
of the case may be effected, all the movements of the machine being the same as
those above explained.
For arresting the action of the machine, the following arrangement of mechanism
is employed
Dis the belt shifter bar fitted with rack teeth d, which gear into a pinion d¹ keyed
to a vertical shaft D³.
The shaft rests in an adjustable step bearing carried by a brake lever E'
fulcrummed on the main framing. The longer arm of this lever E' carries a brake
block e which underlies the brake wheel E. The vertical shaft D³ is furnished
with a scrow thread , which enters a threaded bearing in a bracket bolted to the
main framing.
D₁ is a hand lever fitted to the top of the shaft D³, for the purpose of imparting an
axial motion thereto.
When, therefore, the shaft is turned, it will also be raised or depressed by reason of
its screw connection with the fixed bearing.
Thus, when the belt shifter D² is caused to throw the belt onto the loose pulley, the
shaft will, at the same time, by its endway motion, force the brake block e of the rock
lever E, into contact with the brake wheel E, and thereby cause the rapid absorption
of tho momentum of the crank shaft.
On reversing the movement of the hand lover, the driving bolt will be shifted from
the loose to the fast pulley, and at the same time, the brake wheel will be released
from its friction block.
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
The arrangement of mechanism above described for imparting to a heading or
tapering die and punch, traversing motions of different lengths or speeds in front of a
counter die or bunting tool; presenting metallic cases to a reciprocating die and
punch, for the heading or tapering of such cases; and discharging the same
automatically from the machine, on the completion of such operations.
- יהונת
c
L1000
NEWTON & SON,
Agents for the Applicant.