Improved Machine for Hollowing Out, Shaping, or Forming Razor Blades or other small Articles.
Year: 1893

page_text: Date of Application, 23rd Feb., 1893
Complete Specification Left, 10th Apr., 1893—Accepted, 14th Oct., 1893
PROVISIONAL SPECIFICATION.
Improved Machine for Hollowing Out, Shaping, or Forming Razor
Blades or other small Articles.
A communication by JULES EMILE LERESCHE, of 5, Rue de Mazagran, Paris,
in the Republic of France.
I, WILLIAM PHILLIPS THOMPSON, F.C.S., M.I.M.E., of the Agency for
Foreign Patent Solicitors, 6 Lord Street, Liverpool, and 6, Bank. Street,
Manchester, both in the County of Lancaster, and 323, High Holborn, in the
County of Middlesex, Civil Engineer, do hereby declare the nature of this
invention to be as follows:-
This invention has for its object an improved machine for automatically hollowing
razor blades or other like articles, and one which may also be used for hollowing
out, shaping or forming all kinds of small articles generally, either on one face or
on both faces simultaneously.
The characteristic feature of this machine consists in the use of combined lower
and upper carriages, the lower ones having a longitudinal movement for hollowing
the blade or the article longitudinally, and the upper ones having a transverse
motion so as to hollow or shape the article crosswise. These carriages are
arranged in such a way that two blades or articles, one on the right of the machine
and the other on the left, may be hollowed simultaneously. For causing the
carriages to make the necessary traverse there is provided a driving shaft having
a pulley and an endless screw, this latter engages a wheel keyed on the one end of
the main transverse shaft of the machine. On the other end of the transverse
shaft, there a disc with a stud by means of which there is imparted a longitudinal
to and fro motion to a double armed connecting rod, which in turn transmits
its motion to one set of the carriages. The driving shaft has at each end an
eccentric stud engaging grooves in a second set of connecting pieces, and giving
them a transverse to and fro motion which they communicate to the other set (that
is, the upper) of carriages in order to hollow the articles crosswise. These latter
connecting pieces are guided in suitable uprights.
Shaping pieces are attached to the upper carriages which concurrently with the
upright guides receive from the connecting pieces the necessary motion for obtaining
the different shapes to be imparted to the razor blades or other articles to be
hollowed out, shaped or formed. Carriers are provided for the blades or other
articles and they are connected to the upper set of supports to which are also fixed
other small supports, the blades or other articles under treatment are placed in
these carriers and supports and held down by suitable finger pieces. The blade
holders are held against regulating screws and under the action of the grindstones
or tools during the hollowing of the articles, by means of two strong springs.
The grindstones are mounted on two pointed shafts revolving in spindles fixed in
two head pieces forming part of the machine. The grindstones are operated by
pulleys by a driving apparatus independent from that of the carriages.
The speed of the shaft with the endless screw on it and of the main transverse
shaft is so calculated that the upper carriages make a sufficiently rapid cross to and
fro motion as to allow of the blade or article being hollowed to the desired extent,
whilst the lower carriages are making a single traverse from left to right and
vice versa. It is of course understood that the endless screw and its gearing may
be replaced by pulleys turning to left or right by a simple return screw or by other
combined gearings giving the same result.
The connecting pieces for the upper set of carriages may also be modified by

page_text: making therein long holes for receiving large studs intended to prevent them from
deviating, in this case the upright guide might also be dispensed with.
The carriers for the blades or other article may be hinged in any suitable
manner, and the method of fixing the articles in place for being operated upon may
vary according to their formation or shape. The blade carriers may vary in form
or shape, as these pieces may be modified so as to allow of the upper and under
sides of the article being hollowed out or shaped simultaneously. This result
which will in no way affect the principle of the movement of this machine, may be
obtained by arranging two more grindstones below the existing ones and in the
same plane. In the same way the shafts of the grindstones or tools may be
mounted in any suitable manner without in any way altering the principle of the
machine.
Dated this 22nd day of February 1893.
COMPLETE SPECIFICATION.
Improved Machine for Hollowing Out, Shaping, or Forming Razor
Blades or other small Articles.
A communication by JULES EMile Leresche, of 5, Rue de Mazagran, Paris,
in the Republic of France.
I, WILLIAM PHILLIPS THOMPSON, F.C.S. M.I.M.E. of the Agency for
Foreign Patent Solicitors, 6 Lord Street, Liverpool, & 6 Bank Street,
Manchester, both in the County of Lancaster, & 323 High Holborn in the
County of Middlesex, Civil Engineer, 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 has for its object an improved machine for automatically hollowing
razor blades or other like articles, and one which may also be used for hollowing
out, shaping or forming all kinds of small articles generally, either on one face or
on both faces simultaneously.
In order to better allow of the invention being understood, reference will now be
made to the accompanying drawing, on which :-
Figure 1 shows a front view of the machine in perspective:
Figure 2, a rear view, also in perspective, and Figure 3 a transverse section of the
same.
Fig. 4 shows the slide way in perspective.
The characteristic feature of this machine consists in the use of combined lower
and upper carriages, the lower ones having a longitudinal movement for hollowing
the blade or the article longitudinally, and the upper ones having a transverse
motion so as to hollow or shape the article crosswise. These carriages are arranged
in such a way that two blades or articles, one on the right of the machine and the
other on the left, may be hollowed simultaneously. For causing the carriages to
make the necessary traverse, there is provided a driving shaft A having a pulley A¹
and an endless screw or worm A2, this latter engages a wheel B' keyed on the one
end of the main transverse shaft B of the machine. On the other end of the
transverse shaft B there is a disc B2 with a stud by means of which there is
imparted a longitudinal to and fro motion to a double armed connecting rod C,
which, in turn transmits its motion to one set of the carriages F2 F2. These
carriages as will be seen from Figure 3 are mounted on a piece F³ of a Y shaped
cross section and are so supported by the expanded part of the piece F³ resting on
the edges of the hollow head 1 of the slide way Ft. The construction of this slide
way is clearly seen in Figure 4; it consists of a slotted tail piece 2 with a head 1.
A bolt 3 with a nut passes through the tail piece 2 and the base plate of the
machine (Figure 3) and further a small screw e (Figure 4) passes through the side

page_text: of the head 1 and holds the piece F³ from moving when screwed up tightly. It
will be seen by this arrangement of mounting the parts, the carriage F' can turn in
all directions and when it has been adjusted to the desired point it is rendered
immovable by tightening the screw e. The driving shaft A has at each end an
eccentric stud a a engaging grooves d in a second set of connecting pieces D D,
and giving them a transverse to and fro motion which they communicate to the
upper carriages F F in order to hollow the articles crosswise. These connecting
pieces D are guided in suitable uprights E E.
Shaping pieces K are attached to the upper carriages F, which receive from the
connecting pieces D, the necessary motion for obtaining the shape to be imparted
to the razor blades or other articles to be hollowed out, shaped or formed.
Carriers G G are provided for the blades or other articles, and they are connected
to the upper set of carriages F. To the carriers are fixed the supports gg, and the
blades G or other articles under treatment are placed in the carriers and supports
and held down by suitable finger pieces g g¹. The carriers G G are held against a
regulating screw and under the action of the grindstones or tools M M during the
hollowing of the articles, by means of two strong springs H H.
The grindstones M are mounted on two pointed shafts L revolving in spindles PP
fixed in two head pieces X forming part of the machine. The grindstones
are operated by pulleys 1 by a driving apparatus independent from that of the
carriages.
The speed of the shafts A and B is so calculated that the upper carriages make
a sufficiently rapid cross to and fro motion so as to allow of the blade or article
being hollowed to the desired extent, whilst the lower carriages are making a
single traverse from left to right and vice versa. It is, of course, understood that
the endless screw and its gearing may be replaced by pulleys turning to left
or right, by a simple return screw, or by other combined gearings giving the same
result.
The connecting piece D for the upper set of carriages may also be modified by
making therein a long hole for receiving a large stud intended to prevent it from
deviating, in this case, the upright guide E might also be dispensed with.
The carriers G for the blades or other article may be hinged in any suitable
manner, and the method of fixing the articles G' in place for being operated upon
may vary according to their formation or shape. The blade carriers G may vary
in form or
shape, as these pieces may be modified so as to allow of the upper and
under sides of the article being hollowed out or shaped simultaneously. This result,
which will in no way affect the principle of the movement of this machine, may be
obtained by arranging two more grindstones below the existing ones M and in
the same plane. In the same way, the shafts of the grindstones or tools M may be
mounted in any suitable manner without in any way altering the principle of the
machine.
Having now particularly described and ascertained the nature of the said inven-
tion, and in what manner the same is to be performed, as communicated to me by
my foreign correspondent, I declare that what I claim is :-
An improved machine for hollowing out, shaping, or forming razor blades, or
other small articles, either on one face, or on both faces simultaneously, constructed
substantially on the principles and as hereinbefore described, and an example of
which is shown on the accompanying drawing.
Dated thin 9th do at 1002
WM. P. THOMPSON & Co.,
Agents for the Applicant.