IMPROVEMENTS IN EMBOSSING AND STAMPING MACHINES
Year: 1875

page_text: LETTERS PATENT to James Murdock Napier, of York Road, Lambeth,
in the County of Surrey, for the Invention of "IMPROVEMENTS IN
EMBOSSING AND STAMPING MACHINES."
و,
Sealed the 11th February 1876, and dated the 1st September 1875.
1.
PROVISIONAL SPECIFICATION left by the said James Murdock Napier
at the Office of the Commissioners of Patents, with his Petition,
on the 1st September 1875: 1
I, JAMES MURDOCK NAPIER, of York Road, Lambeth, in the County
of Surrey, do hereby declare the nature of the said Invention for
“IMPROVEMENTS IN EMBOSSING ANd Stamping MachINES," to be as follows:-
This. Invention, has for its object improvements in embossing and
stamping machines, and relates especially to the means for counting
the number of impressions taken from the die.
The die is held in a die holder secured to a plunger which receives
a motion to and from a stationary bed or "force" by means of a screw
and fly, or by other ordinary mechanism. The die is not rigidly fixed
to the holder, but is free to yield for a short distanco to pressure applied

page_text: to its face. The plunger contains a coiled spring acting on a block,
which is able to slide within the plunger and abuts upon the stem of
the die or die holder.
When, in order to take an impression, pressure is applied to the face
of the die, the die yields so far as it is free so to do, the coiled spring is
compressed, and the block moves within the plunger. This movement
of the block, conveyed by a system of levers, actuates the counting
apparatus.
Pin jointed to the plunger on either side are the front ends of a
double or forked lever, which in rear is supported by links jointed to
it and descending to fixed fulcra. A coiled spring attached to the
double lever tends constantly to lift the plunger. Between the two
sides of the double lever another intermediate lever lies, and it has its
fulcrum on the double lever. Its fore end rests upon and is held by a
spring in contact with a friction pulley mounted in the sliding block
within the plunger of the press. When the fore end of the intermediate
lever is moved upwards in consequence of pressure applied to the facc
of the dic its hinder end descends; and here between the two links
which carry the rear end of the double or forked lever the intermediate
lever carries a pawl, which acts upon a ratchet wheel connected with a
train of counting wheels. The nose of the pawl is in the line of the
fixed fulcra of the links, or thereabout, so that the play of the lovers
does not alter its position so long as the die is not forced back.
SPECIFICATION in pursuance of the conditions of the Letters Patent,
filed by the said James Murdoch Napier in the Great Seal Patent 25
Office on the 1st March 1876.
TO ALL TO WHOM THESE PRESENTS SHALL COME, I, JAMES
MURDOCH NAPIER, of York Road, Lambeth, in the County of Surrey,
send greeting.
WHEREAS Her most Excellent Majesty Queen Victoria, by Her 30
Letters Patent, bearing date the First day of September, in the year
of our Lord One thousand eight hundred and seventy-five, in the
thirty-ninth year of Her reign, did, for Herself, Her heirs and suc-

page_text: cessors, give and grant unto me, the said James Murdoch Napier, Her
special license that I, the said James Murdoch Napier, my executors,
administrators, and assigns,, or such others as I, the said James Murdoch
Napier, my executors, administrators, and assigns, should at any time
agree with, and no others, from time to time and at all times thereafter
during the term therein expressed, should and lawfully might make,"
'use, exercise, and vend, within the. United Kingdom of Great Britain
and Ireland, the Channel Islands, and Isle of Man, an Invention for
“IMPROVEMENTS IN EMBOSSING AND STAMPING MACHINES," upon the condition
(amongst others), that I, the said James Murdoch Napier, my executors
or administrators, by an instrument in writing under my, or their, or
one of their hands and seals, should particularly describe and ascertain
the nature of the said Invention, and in what manner the same was
to be performed, and 'cause the same to be filed in the Great, Seal
Patent Office within six calendar months next and immediately after
the date of the said Letters Patent.
NOW KNOW YE, that I, the said James Murdoch Napier, do hereby
declare the nature of the said Invention, and in what manner the
same is to be performed, to be particularly described and ascertained
in and by the following statement thereof; that is to say :-
This Invention has for its object improvements in embossing and
stamping machines, and relates especially to the means for counting the
number of impressions taken from the die.
The die is held in a die holder secured to a plunger which receives a
motion to and from a stationary bed or "force" by means of a screw
and fly, or by other ordinary mechanism. The die is not rigidly fixed
to the holder, but is free to yield for a short distance to pressure applied
to its face. The plunger contains a coiled spring acting on a block
which is able to slide within the plunger and abuts upon the stem of the
die or die holder.
1
When, in order to take an impression, pressure is applied to the face
of the die, the die yields so far as it is free so to do, the coiled spring is,.
compressed, and the block moves within the plunger. This movement
of the block, conveyed by a system of levers, actuates the counting
apparatus.

page_text: to obtain an impression be applied to the face of the die when the
machine is in any other position the die will recede, and this motion
of the die in respect to the plunger is transmitted to the counting
apparatus in the following manner:- is a forked or double lever pin,
jointed at ', l, to the plunger f, and near its other end it is connected
by links m, m, with the fixed fulcra n, n; o is a spring capable of
sustaining the weight of these levers and of the plunger f, with the
parts in connection therewith. On the upper end of the spring is a
nut which drops into a socket at the top of the spring case; p is another
lever carried by the double lever and having its fulcrum upon it at p³.
At one end it enters a slot in the plunger fand block and rests on
the top of a friction pulley within the block, being kept in contact
by the spring q. At its other end the lever p is jointed to a link r,
which at its lower extremity is connected with and gives motion to a
lever s.
This lever is able to rock about the axis of the ratchet wheel.t,
and is a driving pawl mounted on the lever s; t¹ is a retaining pawl.
Thus each time the die receives a pressure the ratchet wheel rotates.
through the space of a tooth. The rotations of the ratchet wheel are
counted and indicated by ordinary counting wheels. It will be observed
that although the die is mounted on the plunger the counting apparatus
is independent of the motion of the plunger, and its action depends
only on pressure sufficient to produce an impression being applied to
the face of the die.
It will be seen from the Drawings that the parts of the machine con-
nected with the transmission of motion to the train of counting wheels
are encased and secured under lock and key.
I claim as my improvements in embossing and stamping machines
the arrangement of the die upon the plunger, so as to be capable of
yielding to pressure, and the means by which this motion of the die
is caused to actuate counting apparatus, substantially as described.
In witness whereof, I, the said James Murdoch Napier, have here-
unto set my hand and seal, this First day of March, in the year
of our Lord One thousand eight hundred and seventy-six.