Rivetting-tool and Cylinder-holder for Watchmakers' Use.
Year: 1890

page_text: Date of Application, 26th Nov., 1890
Complete Specification Left, 29th July, 1891-Accepted, 5th Sept., 1891
PROVISIONAL SPECIFICATION.
Rivetting-tool and Cylinder-holder for Watchmakers' Use.
We, JOSEPH SCHWENDEMANN, Watchmaker, and CARL PERROT, both of
8, Neuhofstrasse, Frankfort-on-Main, in the Empire of Germany, do hereby
declare the nature of this invention to be as follows:-
This invention relates to a rivetting-tool and device for holding the cylinder in
driving out the cylinder plug.
As a rivetting-tool, it consists of a pedestal on which is fixed a clamp or table
having several holes, into one of which is inserted a post upon which an arm is
vertically-adjustable and may be fixed at any point by a screw. This extends over
the centre of the base and terminates in a socket to receive the various punches to
be used. The pedestal has a vertical central bore to receive a chuck or clamp
formed by a split socket externally coned so that its jaws or segments will be
closed when the chuck is drawn down slightly in the bore of the pedestal by an
eccentric shaft worked by a hand lever. In this chuck or clamp is firmly held
either a stake having a central hole, or a disc-shaped "stake" having a circle of
holes of different sizes. As the holes in the disc shaped stake are near its periphery,
the post carrying the punch guiding arm is inserted in the second hole of the clamp
or table in order that the punch may be in alignment with any one hole of the
disc-shaped stake as the latter is turned upon its centre.
The advantage of this rivetter over those hitherto employed is that its parts may
be moved out of the way or entirely dismounted at will, according to the work to
be done, the post carrying the punch guide arm being readily removed. This is of
great importance when these parts are in the way of the work in hand. For
instance, as a holder for the cylinder whilst driving out the plug, the clamp with
the post and arm are replaced by the cylinder-holder which is clamped on the
chuck above referred to, and consisting of a disc provided with a ring of holes, to suit
cylinders of various sizes and a central hole in which is inserted a vertical guide-
rod upon which slides a tubular socket pressed down by a spring and terminating
at its lower end in a crosshead forming a presser to hold the cylinder in its hole in
the table and a guide for the punch by which the plug is driven out.
The presser
has a register pin at one end adapted to drop into one of a series of holes in the
table whereby to make a hole at its other end register with one of the cylinder
holes in the table.
The advantage of this device is that it is no longer necessary to hold the cylinder
in the hand, thus leaving the worker's both hands free to drive the plug out of the
cylinder with a suitable punch inserted through the hole in the presser, without
fear of injuring the cylinder.
D
NL ambon 1900

page_text: COMPLETE SPECIFICATION
Rivetting-tool and Cylinder-holder for Watchmakers' Use.
We JOSEPH SCHWENDEMANN, Watchmaker, and CARL PERROT both of
8 Neuhofstrasse, Frankfort-on-Main, in the Empire of Germany, 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 rivetting-tool and device for holding the cylinder in
driving out the cylinder plug.
In the accompanying drawings,
Figures 1 and 2 are elevations of the device, as a rivetting-tool.
Figures 6, 7, 8, and 9, shew details thereof.
Figure 3 is an elevation of the device, as a cylinder-holder.
Figures 4 and 5 are details thereof.
As a rivetting-tool, it consists of a pedestal A on which is fixed a clamp or
table B having several holes, into one of which is inserted a post a upon which an
arm is vertically-adjustable and may be fixed at any point by a screw o. This
extends over the centre of the base and terminates in a socket to receive the
various punches to be used. The pedestal has a vertical central bore to receive a
chuck or clamp m formed by a split socket externally coned so that its jaws or
segments will be closed when the chuck is drawn down slightly in the bore of
the pedestal by an eccentric shaft worked by a hand-lever n. In this chuck or
clamp is firmly held either a stake e having a central hole, as shewn in Figure 1,
or a disc-shaped "stake d having a circle of holes of different sizes, as shewn
in Figure 2. As the holes in the disc-shaped stake are near its periphery, the
post a carrying the punch-guiding arm is inserted in the second hole of the
clamp or table B in order that the punch e may be in alignment with any one hole
of the disc-shaped stake as the latter is turned upon its centre.
"
The advantage of this rivetter over those hitherto employed is that its parts may
be moved out of the way or entirely dismounted, at will, according to the work to be
done, the post a carrying the punch-guide arm being readily removed. This is
of great importance when these parts are in the way of the work in hand. For
instance, as a holder for the cylinder whilst driving out the plug, the clamp B with
the post and arm are replaced by the cylinder-holder which is clamped on the
chuck above referred to, shewn in detail in Figures 4 and 5, and in elevation in
Figure 3, and consisting of a disc C provided with a ring of holes, to suit cylinders
of various sizes, and a central hole in which is inserted a vertical guide-rod f upon
which slides a tubular socket g pressed down by a spring and terminating at its
lower end in a crosshead k forming a presser to hold the cylinder in its hole in the
table and a guide for the punch by which the plug is driven out. The presser k
has a register-pin at one end adapted to drop into one of a series of holes in the
table whereby to make a hole at its other end register with one of the cylinder
holes in the table C.
The advantage of this device is that it is no longer necessary to hold the
cylinder in the hand, thus leaving the worker's both hands free to drive the plug
out of the cylinder with a suitable punch inserted through the hole in the presser,
without fear of injuring the cylinder.
Having now particularly described and ascertained the nature of the said inven-
tion, and in what manner the same is to be performed, we declare that what
we claim is ;-
1. A watchmakers' rivetting-tool, consisting of pedestal A screw-clamp B
standard a fixed adjustably therein and carrying the vertically-adjustable punch
guide arm b and a stake or disc c or d held in the pedestal by means of the chuck
or clamp m operated by the eccentric and lever n, substantially as set forth.

page_text: 2. The cylinder-holder C also secured in the pedestal A by means of the above
mentioned chuck and eccentric consisting essentially of a presser-jaw k arranged to
rotate and slide on a post f and depressed by a spring h, the presser-jaw being pro-
vided at one end with a register-pin / which takes into concentric holes of the disc
and ensures correct register of the hole in the other end of said presser with one of
the cylinder holes in the disc or table, as specified.
Dad of Tul 1901
J. SCHWENDEMANN.
CARL PERROT.
By A. M. & Wm. Clark,
53, Chancery Lane, London, Patent Agents.