An Improvement in Nail Making Machines.
Year: 1888

page_text: Date of Application, 22nd Sept., 1888
Complete Specification Left, 4th June, 1889-Accepted, 29th June, 1889
PROVISIONAL SPECIFICATION.
[Communicated from abroad by Mr. FRANK JOHNSTONE MITCHELL, Hotel Belle Vue,
Cadenabbia, Italy.]
An Improvement in Nail Making Machines.
We, J. J. CORDES and COMPANY Limited, of Dos Works, Newport, in the County
of Monmouth, Nail Spike & Rivet Manufacturers, do hereby declare the nature of
this invention to be as follows :-
This invention relates to machines for making wrought metal nails by shaping
nail rod to taper form, cutting off successive lengths as blanks and forming heads
thereon.
The nail rod which is fed step by step first passes between a pair of rolls by which
it is shaped to a taper form in one dimension; it is then taken hold of between a
pair of finishing rolls and the foremost of the tapered blanks is cut off by
shears.
While this blank is between the finishing rolls it is held between sliding grippers
pressing against its sides which grippers advance with it beyond the finishing rolls.
Two transverse sliding grippers then advance between the side grippers and seize the
blank while the side grippers release it. These transverse grippers have their faces
cut to V shape so that as they grip the blank they cause it to turn partly round,
about th of a revolution.
Another pair of V grippers then seize the front part of the blank while it is in this
attitude and take it on to the heading die. When the blank is headed these grippers
release it and the finished nail falls from them. By causing the blank to turn partly
round as described so that it is fed into V shaped grippers, it is by them very firmly
held while it is headed without being disfigured by their pressure, and the faces of
these grippers form a base extending all round the blank on which the head
is upset.
Dated this 22nd day of Sentember 1888
ABEL & IMRAY,
Agents for the Applicant.
COMPLETE
SPECIFICATION.
An Improvement in Nail Making Machines.
We, J. J. CORDES and COMPANY Limited, of Dos Works Newport in the County
of Monmouth Nail Spike & Rivet Manufacturers 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 machines for making wrought metal nails by shaping
nail rod to taper form, cutting off successive lengths as blanks and forming heads
thereon.
The nail rod which is fed step by step first passes between a pair of rolls by
which it is shaped to
a taper form in one dimension; it is then taken hold
of between a pair of finishing rolls and the foremost of the tapered blanks is cut
off by shears.
While this blank is between the finishing rolls it is held between sliding grippers
pressing against its sides which grippers advance with it beyond the finishing rolls.
Two transverse sliding grippers then advance between the side grippers and seize the
blank while the side grippers release it. These transverse grippers have their faces
cut to shape so that as they grip the blank they cause it to turn partly round,
about th of a revolution.

page_text: Another pair of V grippers then seize the front part of the blank while it is in
this attitude and take it on to the heading die. When the blank is headed these
grippers release it and the finished nail falls from them. By causing the blank to
turn partly round as described so that it is fed into V shaped grippers, it is by them
very firmly held while it is headed without being disfigured by their pressure, and
the faces of these grippers form a base extending all round the blank on which the
head is upset.
Fig. 1 of the accompanying drawings is a longitudinal section of so much of a
nail making machine of known form as is necessary to illustrate this invention.
Fig. 2 is a transverse section at X X. The guiding or horizontally moving
grippers S S hold the nail blank N in the usual way as it passes through between the
rollers RR. Just before they begin to retreat from the blank, two transverse or
vertically moving grippers A A advance towards the blank N. Each of these
grippers AA has its face hollowed to the shape of an irregular V as shewn in
Fig. 2. so that as they press the blank while the grippers S S retreat from it they
cause the blank to turn about one eighth round. The blank held in this attitude by
the grippers A A is then taken hold of by two lateral horizontally moving grippers C
each made with a V groove in its face which advance one on each side of the blank,
and close in upon it when the vertical grippers A A retreat from the blank. The
grippers C holding the blank with part of it projecting carry it back to the
position N¹ where the projecting end of the blank is squeezed by the heading die D
to form the head, the dies Cowing to their V shape, presenting all round the blank a
shoulder on which the head is upset. The grippers S and C move to and fro
together so that when the grippers C take one blank from the grippers A, the
grippers S bring a fresh blank up to A.
Although no means of moving the grippers are shewn in the drawings, it is to be
understood that their movements are effected by cams, the grippers S and C in the
usual way and the grippers A by a similar suitable cam movement.
Having now particularly described and ascertained the nature of this invention
and in what manner the saine is to be performed, we declare that what we
claim is
In combination with the guiding and heading grippers of a nail making machine,
a set of transverse grippers having faces hollowed to V shape so as to turn the nail
blanks partly round and transfer them in this attitude to V shaped heading grippers,
substantially as and for the purpose set forth.
Dated this 4th day of June 1889.
ABEL & IMRAY,
Agents for the Applicants.