Improvements in Nail-making Machinery.
Year: 1894

page_text: Date of Application, 6th June, 1894
Complete Specification Left, 1st Feb., 1895-Accepted, 30th Mar., 1895
PROVISIONAL SPECIFICATION.
Improvements in Nail-making Machinery.
I, PAUL SCHRADER, of 79, Ruhrstrasse, Witten-on-the-Ruhr, in the German
Empire, Engineer, do hereby declare the nature of this invention to be as
follows:-
My invention relates to nail making machinery.
According to my invention in addition to the pair of clamping cheeks ordinarily
used in nail making machines, a second pair of such cheeks is made use of, in front
of the first, on the side of the latter which is toward the hammer. The first pair
of cheeks forms the matrix or anvil at the first stroke of the hammer when the
head of the nail receives its rough form, whilst the second pair of cheeks, at the
second stroke of the hammer, forms the mould for giving the head of the nail its
perfect form.
Dated the 6th day of June 1894.
G. F. REDFERN & Co.,
4, South Street, Finsbury, London, Agents for the Applicant.
Improvements in Nail-making Machinery.
1, PAUL SCHRADER, of 79, Ruhrstrasse, Witten-on-the-Kuhr, in the German
Empire, Engineer, do hereby declare the nature of this invention and in what
imanner the same is to be performed, to be particularly described and ascertained
in and by the following statement :—
My invention relates to nail-making machinery.
According to my invention in addition to the pair of dies ordinarily used in nail-
making machines, a first pair of such dies is made use of in front of such pair, on the
side of the latter which is toward the hammer. The first pair of dies forms the
matrix or anvil at the first stroke of the hammer when the head of the nail receives
its rough form, whilst the second pair of dies at the second stroke of the hammer,
forms the mould for giving the head of the nail its perfect form.
To enable my invention to be fully understood I will describe how it can be
carried into practice by reference to the accompanying drawing, in which :-
Figure 1 is an elevation ; and,
Figure 2 is a plan of a nail-making machine with my improvements applied
thereto.
As the shaft i rotates, the wire D which is fed in through the rollers k is
advanced by means of the usual feed-mechanism, consisting of the crank and con-
necting rod m, together with a gripping mechanism not shewn in the drawing, for a
suitable distance after the formation of the nail head, whereupon the nail is cut off
by means of knives c', e², Figure 2, which are attached to the levers C1, C2 which
are operated by cams o on the shaft i. Thereupon, by the action of the cams n
which are similarly placed upon the shaft i and which act upon the levers B¹, B³,
and of the first dies b', 62 the wire D is gripped and held for the purpose of
D037

page_text: giving the rough form of the new nail head, by means of the known method of
causing the hammer to be driven forward by a spring in which action the
dies, 2 form the matrix or anvil.
Under the action of springs not shewn in the drawing, the dies b', then open,
and thereupon the camp on the shaft i, and the lever A cause the movable die a²
to move up to the fixed die. a' and these dies in combination now form the mould for
the completion of the nail head by a second stroke of the hammer h. The wire D
is then again advanced for a suitable distance, the nail cut off by means of the
knives c¹, c and so on.
According to the particular form of nail head required, the first or second
blow of the hammer may be made to act more or less powerfully, and the movement
of the parts may be brought about in any other manner available in machines of
the class in question.
Having now particularly described and acertained the nature of my said
invention and in what manner the same is to be performed, I declare that what [
claim is :-
1. A. nail-making machine in which two pairs of dies are employed so placed one
behind the other that.upon the first blow or impact of the hammer hathe first pair
of dies b, forms the mould for giving to the head of the nail its rough form,
whilst on the second blow or impact of the hammer the second pair of dies: a', a³
forms the matrix for giving the final form to the head of the nail, substantially as
hereinbefore described.
2. The improved nail-making machine herein before described and illustrated in
the accompanying drawing.
Dated the 1st day o Hob206
G. F. REDFERN & Co.,
4, South Street, Finsbury, London, Agents for the Applicant.