Improvements in Hand-lever Punching, Shearing, Stamping, and like Machines.
Year: 1892

page_text: Date of Application, 15th Oct., 1892-Accepted, 26th Nov., 1892
COMPLETE SPECIFICATION.
Improvements in Hand-lever Punching, Shearing, Stamping, and
like Machines.
We, ARMAND AUGUST BEISSEL of Junkerstrasse, Aachen, Merchant, and
FRANZ ERRENST of Gasborn, Aachen in the German Empire, Master Locksmith,
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:―
This invention relates to a construction of hand lever punching, shearing,
stamping and like machines for operating on metal in the cold state. The invention
consists in an arrangement of the parts for working the punch, or shears, etcetera,
by means of which a greater thickness of metal may be operated upon and larger
holes punched with greater rapidity or greater useful effect than hitherto.
In the accompanying drawing Fig. 1 is a front elevation, Fig. 2 a side elevation
and Fig. 3, a plan of a punching machine with the invention applied thereto.
K is a hand lever for working the machine. It is mounted on the machine
frame so as to turn on pivot d and is in connection with angle lever H by two side
link connections b. In addition to the angle lever H is fitted with two other
e,
pivots o, c. 9 is a double recessed or chambered extension of the sliding tool
holder.
The parts are so arranged that when hand lever K is being moved down into the
dotted position K¹ it brings about a toggle-lever action between the points d and b
owing to the opening of the angle d, e, b, as shewn in the position d, e, 6. In this
movement the end of angle lever H carrying pivot b, and mounted within the
projecting forked end of the machine frame to turn on pivot o, is pressed down.
Pivot c on the shorter arm o, c, of lever H carries at each end a slide block.
These work in the double or forked end or extension of the sliding tool holder in
such a way that the latter is pressed down, thereby also bringing about a toggle-
lever action, the turning point o being so located that the descent of point c of the
angle o, c, c, from c to c¹ gives the maximum stroke of the tool.
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:
1. In hand-lever machines of the kind referred to, the connection, by means of
links of hand-lever K turning on point d, with angle lever H turning on point •, in
in such a way that the shorter arm o, c, of the angle lever describes the curve c, c²,
whilst lever K describes the curve e, e', for the purpose of obtaining a quick action
of the tool when the hand lever is pressed down, substantially as described and
shewn.
2. In hand-lever machines of the kind referred to, the arrangement of a pivot c
fixed in the shorter arm of angle lever H and provided on each side thereof with a
slide block in which blocks the ends of said pivot may turn, for the purpose
specified, substantially as described and shewn.
3. In hand-lever machines of the kind referred to, the arrangement of the slide
blocks carried by pivot c in a forked or double chambered head q located at right

page_text: angles to the axis of the tool holder, for the purpose specified, substantially as
described and shewn.
Dated this 15th day of October 1892.
CAPITAINE & VON HERTLIing,
89, Chancery Lane, London, W.C., Agents for the Applicants.