Improvements in Machines used in the Construction of Hair-pins.
Year: 1894

page_text: Date of Application, 12th Dec., 1894-Accepted, 19th Jan., 1895
COMPLETE SPECIFICATION.
Improvements in Machines used in the Construction of Hair-pins.
I, CHARLES BEAUMONT of 48 Grande Rue, Roubaix, Department du Nord,
France, Manufacturer, 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 used in the construction of hair pins, but is
limited more particularly to devices to be employed in conjunction with the ordinary
mechanism of such machines, for the production of specially shaped heads or points,
such for example as
66 ball-points."
The wire may be fed to the machine and severed by any usual or suitable devices
such as are commonly used and known. Each length as it is fed, is received between
a pair of jaws which can be reciprocated in a direction at right angles with the axis
of the wire. The jaws are then closed, and are moved forward until the wire in the
jaws is in line with two reciprocating dies which close upon the projecting ends of
the wire in the jaws and form the desired points. The force exerted by the dies
may be sudden, resembling the blow of a hammer, but it is preferably exerted more
gradually as hereinafter indicated. After the points have been formed, the jaws
open and return to their original position for the reception of a new length of wire,
the wire already pointed having fallen out immediately upon the separation of the
jaws. The pointed blank is received in a hopper or receptacle below and is finally
bent to the finished shape by the ordinary means.
I will more particularly describe my said invention with reference to the.
accompanying drawings in which Figure 1 is a plan of the machine.
The wire wo is fed transversely by the reciprocating slide A which carries a device
such as is used in similar machines, for carrying the wire in one direction only,
that is to say in the direction of the feed. This slide is reciprocated by the
lever B, adjustably pivoted at 6 and actuated by the cam C. The length of wire
fed is determined by the length of the stroke of the lever B, which is fixed by an
adjustable fulcrum. The wire having been fed forward to the full length, the rod D
advances and jams or grips it by its end or a projection therefrom, so that it cannot
be returned by the backward motion of the slide. This rod is actuated by the
cam 1, which is separately shewn in Figure 2 together with other cams employed
in the machine. Whilst the wire is thus held, it is cut off by the knife E on the
end of the lever F, fulcrumed at f and actuated by the cam 2.
The wire is fed between the slightly separated jaws J J which have a length
equal to the length of the hair pin before bending, between its points. If required,
the points where the wire enters and leaves the jaws may be countersunk or other-
wise shaped so as to help the dies in the formation of the points. One of the jaws
is fixed upon its slide whilst the other is capable of a small amount of motion apart
from the other so as to separate the jaws sufficiently for the free feeding of the
wire. The slide G on which the jaws are mounted, is reciprocated longitudinally
by means of the rod H which is actuated by the cam 3. This cam has three
diameters, xyz, see Figure 2, and at the moment of feeding the rod or a projection
therefrom is in contact with the smallest diameter x. When the wire has been fed
between the jaws, and cut, the cam in its rotary motion brings the next larger
diameter in contact with the rod H and thus closes the jaws. The cam continuing
its rotation brings its largest diameter in contact with the rod and thus pushes
forward the slide G until its jaws are in line with the reciprocating dies I I¹ which

page_text: then close upon the ends of the wire and produce the desired form of points. The
motion of the cam now causes the jaws to open and to return. to their original
position, the pointed length of wire dropping out into a hopper or receptacle below.
A new length of wire is then fed and the cycle of operations is repeated.
The return and the separation of the jaws may be effected by means of springs
or weights.
The dies I I' are operated from the cam 4, Figure 2, by means of the slide K
which acts upon the bell-crank lever L fulcrumed at l. The other end of this
lever actuates the reciprocating rod M and through it the lever N fulcrumed at. n.
The return mctions of these slides rods and levers may if desired be accomplished
by links or by means of springs or weights.
The dies for forming the points are carried at the opposite ends of the
slides OO which are respectively arranged with their centres exactly in line
with the wire in the jaws when presented for the formation of the points. The
slides are pressed towards the wire ends by adjustable stops or screws P P in
or upon the levers L N and are consequently moved simultaneously so that both
heads are formed together.
Having now particularly described and ascertained the nature of my said inven-
tion and in what manner the same is to be performed, I declare that what I
claim is :-
1. A machine for feeding and cutting wire blanks for hair pins and for
forming ball or other special points thereon, constructed arrranged and operating
substantially as herein before described and as illustrated by the accompanying
drawings.
2. In a machine for producing ball and other special shaped points upon hair pin
blanks, a pair of reciprocating jaws in which the blauk is held, in combination with
a pair of reciprocating punches or dies which close upon the ends of the blank
simultaneously to form the points, constructed arranged and operating substantially
as hereinbefore described and as illustrated by the accompanying drawings.
Dated this 11th day of December A.D. 1894.
WILLIAM E. HEYS,
Agent for the Applicant.