IMPROVEMENTS IN MACHINES FOR PRESSING WADS OF WAX BETWEEN TWO PUNCHES
Year: 1881

page_text: LETTERS PATENT to Wilhelm Lorenz, of Carlsruhe City, in the Grand-Duchy
of Baden, German Empire, for an Invention of "IMPROVEMENTS IN MACHINES
FOR PRESSING WADS OF WAX BETWEEN TWO PUNCHES.”
PROVISIONAL SPECIFICATION left by the said Wilhelm Lorenz at the
Office of the Commissioners of Patents on the 20th June 1881.
WILHELM LORENZ, of Carlsruhe City, in the Grand-Duchy of Baden, German
Empire. "IMPROVEMENTS IN MACHINES FOR PRESSING WADS OF WAX BETWEEN
Two PUNCHES."
My Invention relates to an improved inanufacture of wads or discs of wax in a
continuous and expeditious manner by first preparing the wax in the shape of a
continuous rod or thread, which is then fed forward under the action of a cutter,
by which definite lengths are cut off that are then subjected to the action of
punches in a die to form them into wads of the desired configuration.
For this purpose the rod or thread of wax is fed forward through a feed tube,
at the front end of which is situated a reciprocating knife or cutter mounted on a
way shaft that at regular intervals is rocked by a lover actuated by a cam on the
driving shaft of the machine, causing the knife to cut off a length of wax rod
protruded from the feed tube. The length so cut off is received by an arm or
holder, which is mounted on another rocking shaft actuated by a cam so as to causo
the holder to raise the length of wax a certain height in front of the end of a
horizontal punch between this and a die or hollow cylinder open at both ends,
there being provided a punch opposite oach end of this cylinder. These punches
slide to and fro in guides and are worked by rocking levers connected thereto by
a screw adjustment, the lovers being actuated by cams on the driving shaft, for
which purpose they are provided with rods pivotted thereto and carrying anti-
friction rollers that are kept against the cams by means of springs connected to
the lower ends of levers. The cams are so formed as to impart to the punches the
following movements:-The punch which I will designate by No. I being withdrawn
from the tubular die, and punch No. II. being protruded into and through the die,
Price Gd

page_text: the length of wax is raised between them, as above described, whereupon No. I.
advances so as to bring the wax length against the face of No. II., and the wax
being thus held between both punches, No. I. advances still further, while No. II.
recedes, so as to bring the wax into the tubular dio. No. I. now advances rather
quicker than No. II. recedes, so that the wax being compressed between them is
formed into the desired disc shape in the die, any excess of wax being squeezed
out through small lateral holes in the dic. The punch No. II. now recedes quickly
out of the die, so as to leave the open end of this free, and the punch No. I.
advancing more slowly pushes the formed disc or wad of wax out of such open
end of the die where it falls into a channel conducting it into a receptacle. As the
wax may adhere somewhat to the punch its falling is ensured by a striker mounted on
the same rocking shaft as the cutter, and caused to strike the wad away from the
punch as it is protruded. Punch No. I. now recedes and No. II. advances,
assuming their first described position again for repeating the operation. The
above described working parts are continually moistened with water made to drip
from a small overhead reservoir, a basin being provided beneath the dies with a
pipe for conducting away any waste water.
The driving shaft carries a driving pulley loose upon it and 'provided with a
clutch for gearing it to the shaft. By this means the machine can be rapidly
stopped while the driving pulley continues to be driven by its belt.

page_text: SPECIFICATION in pursuance of the conditions of the Letters Patent filed by
the said Wilhelm Lorenz in the Great Seal Patent Office on the 15th
December 1881.
24
WILHELM LORENZ, of Carlsruhe City, in the Grand-Duchy of Baden, German
Empire. IMPROVEMENTS IN MACHINES FOR PRESSING WADS OF WAX BETWEEN
Two PUNCHES."
My Invention relates to an improved manufacture of wads or discs of wax in a
continuous and expeditious manner by first preparing the wax in the shape of a
continuous rod or thread, which is then fed forward under the action of a cutter by
which definite lengths are cut off that are then subjected to the action of punches
in a die to form them into wads of the desired configuration.
For this purpose the rod or thread of wax is fed forward through a feed tube, nt
the front end of which is situated a reciprocating knife or cutter mounted on a
way-shaft that at regular intervals is rocked by a lever actuated by a cam on the
driving shaft of the machine, causing the knife to cut off a length of wax rod
protruded from the feed tube. The length so cut off is received by an arm or
holder which is mounted on another rocking shaft actuated by a cam, so as to
cause the holder to raise the longth of wax a certain height in front of the end of a
horizontal punch between this and a die or hollow cylinder open at both ends,
there being provided a punch opposite each end of this cylinder. These punches
slide to and fro in guides and aro worked by rocking lovers connected thereto by a
screw adjustment, the levers being actuated by cams on the driving shaft, for which
purpose they are provided with rods pivotted thereto and carrying antifriction
rollers that are kept against the cams by means of springs connected to the lower
ends of the levers. The cams are so formed as to impart to the punches the
following movements:-The punch which I will designate by No. I, being with-
drawn from the tubular dio and the punch No. II. boing protruded into and through
the die, the length of wax is raised between them, as above described, whereupon
No. I. advances so as to bring the wax length against the face of No. II., and the
wax being thus held between both punches, No. I. advances still further, while No. II.
recedes, so as to bring the wax into the tubular die. No. I. now advances rather
quicker than No. II. recedes, so that the wax being compressed between them is
formed into the desired disc shape in the die, any excess of wax being squeezed out
through small lateral holes in the die. The punch No. II. now recedes quickly out
of the die so as to leave the open end of this free, and the punch No. I. advancing
more slowly pushes the formed disc or wad of wax out of such open end of the dic,
where it falls into a channel conducting it into a receptacle. As the wax may
adhere somewhat to the punch, its falling is insured by a striker mounted on the
same rocking shaft as the cutter, and caused to strike the wad away from the punch
as it is protruded. Punch No. I. now recedes and No. II. advances, assuming their
first described position again for repeating the operation. The above described
working parts are continually moistened with water made to drip from a small
overhead reservoir, a basin being provided beneath the dies with a pipe for
conducting away any waste water.
The driving shaft carries a driving pulley loose upon it and provided with a
clutch for gearing it to the shaft. By this means the machine can bo rapidly
stopped, while the driving pulley continues to be driven by its belt.
The construction and mode of oporation of the above described machine will be
readily understood on referenco to the accompanying Drawing, in which Figs. 1, 2,
and 3, Sheet I., shew three different elevations of the completo machine; Fig. 1,
Sheet II., shews an enlarged end elevation; Fig. 2 a side elevation partly in section;
Fig. 3, a part cross section, and Fig. 4, a plan.

page_text: The rod or thread of wax is fed continuously forward through the tube A, and at
the proper moment the cutter B cuts off a disc of a certain thickness, which is then
raised by the feed lever C to the central axis between tho upper and lower dies.
The thickness of the discs is determined by the quicker or slower speed of the wax
thread. The raised wax disc is seized by the upper die D and pushed thereby into
the press cylinder a, into which the lower die E has advanced from the opposito
end so that the disc cannot fall down. Both dies now move with much the same
speed to the middle, at which point the pressing of the disc is effected, tho
superfluous wax being allowed to escape through a lateral channel. The lower
die E thereupon recedes rapidly, while the upper die follows slowly and pushes
out the finished wad or disc. A striker F is at this moment caused to descend
in order to detach the wad should it adhere to the one or the other dio. The
wads as they fall pass through the channel b, Fig. 2, Sheet II., into the collecting
box P. The cutting off of the discs and the striking of the wads is effected
simultaneously, the levers B and F being fixed on one and the same shaft C, which
receives motion from the levers d and e and the excentric G. The raising of the
wax discs is then effected by the excentric H and levers fand g, and after this the
above described motion of the dies D and E is effected by the excentrics J, J',
which latter operate through the rods h, i, on the levers Q and L rocking on
centres, q. For preventing friction, rollers K are provided on the rods h, i,
which are pressed against the excentric by the action of the spring M. For
lubricating the dies a receptacle N containing water is provided from which tho
water is allowed to drop, any superfluous quantity thereof being led off through
the pipe O into the vessel V. The machine is driven by means of the gut pulley R
loose on the driving shaft and geared therewith by the clutch S actuated by the
hand lever T. The machine is mounted on a stand U, so that it is accessible on all
sides.
Having thus described the nature of my Invention and in what manner the
same is to be performed I claim,―
First. The herein described method of manufacturing wax wads from a continuous
thread or rod of wax by cutting off lengths of the latter as it is made to advance.
Second. The combination of parts constituting a machine for the manufacture of
wax wads from a continuous thread or rod of wax, arranged and operating as herein
described and shewn on the Drawings.
Third. The mode of feeding the wax thread or rod through the tubo A, substan-
tially as described.
Fourth. The mode of cutting off successive discs of wax from the thread or rod,
of raising up the discs so cut between the dies, and of pressing the discs between
the dies and then ejecting the finished wad, substantially as herein described.
Fifth. The mode of actuating the dies D, E, by means of the levers Q and L and
spring M, substantially as herein described.
In witness whereof, I, the said Wilhelm Lorenz, have hereunto set my hand
and seal, this Ninth day of December, in the year of our Lord One thousand
eight hundred and eighty one.
WILHELM LORENZ. (L.S.)