A New or Improved Machine for Trimming and Countersinking Percussion Cap Blanks and the like.
Year: 1898

page_text: Date of Application, 25th Jan., 1898
Complete Specification left 14th July. 1898-Accepted, 17th Sept., 1898
A New or Improved Machine for Trimming and Countersinking
Percussion Cap Blanks and the like.
I, GEORGE BEBBINGTON, of No. 16, Genesta Road, Plumstead, in the County
of Kent, Engineer, do hereby declare the nature of this invention to be as
follows:-
This invention relates to a new or improved machine for trimming and counter-
sinking percussion cap blanks and the like, the object being to produce a machine
which will not only trim or cut the percussion cap blank to the desired size
but will also countersink and thus remove the inside edge or burr caused by
the trimming or cutting operation, these two operations hitherto having been
accomplished in two separate machines.
The present invention comprises essentially a circular feed plate having a series
of holes on its face each hole being adapted to receive one of the cap blanks.
This feed plate is mounted so as to be intermittently rotated in such a manner
as to bring each cap blank into a position immediately in front of a revolving
die mounted in a spindle which is carried in suitable bearings by a saddle
capable of being slided on the bed or base plate of the machine. The cap
blank is transferred from the feed plate to the die by means of a suitably
shaped punch or rod carried by a spindle mounted on a bracket on the bed of the
machine. This bracket also carries parallel with the punch spindle, another
spindle carrying a cutter or countersinking tool these two spindles are caused to
receive a reciprocating movement independently of each other from any con-
venient moving part of the machine by means of any suitable mechanism.
After the cap blank has been transferred to the die and the punch is clear
thereof the portion of the cap blank which it is desired to trim or cut away
is left protruding from the face of the die, (the amount of such portion left
protruding may be conveniently determined by the length of travel of the punch)
the saddle carrying the revolving die is then caused to travel away from the feed
plate and towards.a circular cutter preferably carried by an arm pivotted to a
This circular cutter is
bracket mounted on the bed of the machine.
then brought automatically into contact with the cap blank so as to cut off or
trim the protruding portion of the cap blank and as soon as this is accomplished
the cutter or countersinking tool is caused to travel forward and slightly counter-
sink or remove the burr from the inner edge, the saddle carrying the revolving
die which now contains the finished cap blank, then moves back again ready
to allow the next cap blank to be transferred from the feed plate to the die, the
finished cap blank being ejected from the back of the die by the fresh blank
entering therein.

page_text: A New or Improved Machine for Trimming and Countersinking
Percussion Cap Blanks and the like.
I, GEORGE BEBBINGTON, of No. 16, Genesta Road, Plumstead, in the County
of Kent, Engineer, do hereby declare the nature of this invention and in what
manner the same is to be performed to be particularly described and
tained in and by the following statement; -
ascer-
This invention relates to a new or improved machine for trimming and counter-
sinking percussion cap blanks and the like, the object being to produce a machine
which will not only trim or cut the percussion cap blank to the desired size
but will also countersink and thus remove the inside edge or burr caused by
the trimming or cutting operation, these two operations hitherto having been
accomplished in two separate machines.
Referring to the accompanying drawings in which ;-
Figure 1 is a view in side elevation of a machine constructed according to
my invention.
Figure 2 is a view in plan thereof.
Figure 3 is an end view in section on line x x of Figure 1 and Figure 4 is
an enlarged detail view, partly in section.
each
Throughout the views similar parts are marked with like letters of reference.
On a suitable frame A are mounted bearings a a carrying a spindle B on
which is fixed a circular feed plate C having a series of holes or openings
hole or opening being adapted to receive one of the cap blanks y. This feed
plate C is intermittently rotated by mounting on the spindle B a ratchet wheel D
operated by a pawl d. This pawl d receives its motion from the main axle E
of the machine from a cam wheel e mounted thereon by means of a pivotted
lever F carrying at its lower end a stud engaging the path of the cam wheel e
and connected at its upper end by a connecting rod f with the lower end of a
similarly pivotted lever F which carries the pawl d at its upper end. The
amount of rotation of the feed plate C for each rotation of the main axle E is so
arranged as to bring each hole or opening c consecutively into line with the open-
ing of a die or holder y carried by a second spindle & mounted to revolve in
bearings carried by a slide H mounted on the bed or frame A. of the machine.
The spindle G and with it the die or holder g is adapted to be revolved at a high
rate of speed in any convenient manner. The slide H is caused to travel to and
fro on the bed or frame A. by means of a cam wheel e¹ mounted on the free end
of the main axle E through the medium of a pivotted lever I which carries at
its lower end a stud engaging the path of the cam wheel e¹ and connected at its 3
upper end by a connecting rod i with a lug on the slide H.
The cap blank y is transferred from the feed plate C to the die or holder g
by means of a suitably shaped punch or rod K carried by a spindle K¹ mounted
in suitable bearings k carried by the frame A. The bearings k also carry
parallel with the punch or rod spindle K¹, another spindle L carrying a cutting 4
or countersinking tool L'.
The distance apart or position with respect to each other of the spindles K¹
and L will be determined by and be equal to the travel of the slide H.
These spindles K₁ and L are reciprocated independently of each other and at
the proper time by means of levers M and M' pivotted to the frame, their upper 4
ends engaging slots and formed in the respective spindles K' and L and
their lower ends pivotted to the rods N and N₁ of the eccentrics n, n¹, carried
by the main axle E, which is arranged to be rotated in any suitable manner

page_text: from any convenient source of power. It will be understood that the spindles K¹
and L do not revolve, in fact they are prevented from revolving either by forming
the swellings or enlargements on the spindles in which the slots k¹ and I are
formed with flat sides rubbing or sliding one against the other as shown or in
any other well-known manner.
Mounted on the slide H is a bearing h in which a double armed lever O rocks
or is pivotted. One arm of this lever O carries a roller o arranged to engage the
edge of a double-inclined or V-shaped plate P fixed to the bed or frame A of the
machine in such a manner that as the slide H travels to or from the free end or
arm of the lever which carries a circular cutter o¹ will be raised and lowered.
The roller o is preferably mounted in a slot o² in the lever so as to allow of
adjusting or taking up the wear due to grinding or sharpening of the circular
cutter o. The arm of the lever O carrying the roller o is either weighted or
controlled by a spring so as to always keep the roller o in engagement with the
edge of the plate P.
The machine operates as follows:-The main axle E continuously revolves
in one direction as soon as one of the holes or openings in the feed plate C con-
taining the cap blanks y which are fed thereto by hand, comes opposite to or in
a line with the revolving die or holder g the eccentric n will cause the spindle K¹
and with it the punch or rod K to reciprocate and transfer the
cap blank y from
the feed plate C to the die or holder g and when the said punch or rod K has moved
back again clear of the cap blank the portion or edge thereof which it is desired
to trim or cut away is left protruding from the face of the die (see more par-
ticularly Figure 4), the amount of such portion or edge left protruding may be
conveniently determined by the amount of travel given to the spindle K¹. The
cam e¹ will now cause the slide H to be moved away from the feed plate C which
causes the circular cutter 01 by reason of the inclined V-shaped plate P, to rise
and press against the cap blank contained in the revolving die or holder 9 speedily
cutting or trimming off its protruding portion or edge and by the time the slide H
has reached the limit of its backward movement the cutter 0¹ will be again
lowered or in its first position clear of the cap blank. The cap blank will now
be immediately in line with the cutting or countersinking tool L₁ which is then
reciprocated by the eccentric n¹ causing it to engage the blank and slightly
countersink it or remove the burr from its inner edge.
The slide H carrying the revolving die or holder which now contains the
finished cap blank will then move forward to its first position, the feed plate C
having been partially revolved in the meantime, ready for the die or holder g
to receive its next blank, the finished cap blanks being ejected from the back
of the die or holder by the fresh blank entering therein.
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) A machine for trimming and countersinking percussion cap blanks and
the like, constructed arranged and adapted to operate substantially
herein before described and shown.
as
(2) A machine for trimming and countersinking percussion cap blanks and
the like, consisting essentially of a feed plate adapted to receive the cap blanks and
so separated and arranged as to bring each blank opposite to or in a line with a
revolving die or holder, of a suitably operated rod or punch for transferring the
blank from the feed plate to the revolving die or holder in such a manner
as to leave the edge or portion requiring to be trimmed protruding from
the face of said die, of a cutter so arranged as to be brought into engagement
with the cap blank so as to trim or cut off the edge or protruding portion thereof
and of a cutting or countersinking tool so arranged and operated as to countersink
or remove the burr from the inner edge of the cap blank after the same has
been trimmed substantially as set forth.

page_text: (3) A machine for trimming and countersinking percussion cap blanks,
characterized by the blanks being forced into a die, and being both trimmed
and countersunk before they leave the said die, as set forth.
Dated this 14th day of July 1898.
ROBERT E. PHILLIPS, Assoc. M.Inst.C.E., M.I.Mech. E.,
Chartered Patent Agent,
70, Chancery Lane, London, W.C., Agent for the Applicant.