Improvements relating to the Manufacture of Lacing Studs, and to Apparatus therefor.
Year: 1892

page_text: Date of Application, 10th Dec., 1892-Accepted. 25th Feb. 1893
COMPLETE SIEVITATION
Improvements relating to the Manufacture of Lacing Studs, and
to Apparatus therefor.
I, HEINRICH SALCHER, of Wagstadt, Silesia, in the Empire of Austria,
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 :-
My invention relates to the manufacture of lacing studs and to apparatus
therefor.
·
The lacing studs heretofore made of sheet metal present the inconvenience that
by reason of the slight strength of the material used they are not durable, and in
consequence of the difficult treatment of the sheet metal, which must be heated
several times, are too expensive for production in large quantities.
The said invention comprises a method of making durable and cheap lacing
studs.
In carrying this method into practice I use the well-known wire-nail making
machine which automatically effects the cutting off, pointing and heading of wire
nails and which, for the purpose of manufacturing lacing studs from wire, is
provided with devices which are represented in the accompanying drawing.
In this drawing Figures 1 and 2 represent horizontal sections of the parts of the
machine occupying two successive positions and which act in conjunction in the
manufacture of lacing studs.
Figures 3 and 4 show side views of such parts.
Figure 5 represents the several stages in the manufacture of a lacing stud and
the mode of fixing the stud.
As shown, the two clamping jaws A of the machine are made with a cavity a
corresponding to the form of the lacing stud plate, whilst the hammer B presents a
nipple & designed for stamping the head of the lacing stud. One cutter C consists
of a plate the cutting edge s of which stands back, by the thickness of the wire to
be acted up, from the front of the cutter, thereby producing the projecting edge k
(Figure 3). The inclination s¹ 2 is such that the wire can be bent sufficiently
over the cavity a, and terminates in the steeper surface s³s, so as to avoid too
sharp a cutting edges which is liable to be damaged.
The other cutter D is firmly connected with the bending plate d and provided
with a cutting edge e which projects exactly the same distance beyond the front of
the cutter as the cutting edges of the first named cutter C stands back. The
bending plate d possesses in its middle a semi-circular obtuse depression f designed
for bending the wire and the cutter D has an inclination en the object of which will
hereinafter be explained.
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According to the improved method the manufacture of lacing studs takes place
in the following manner: The wire is caused by the feed mechanism to advance in
the well-known manner through the straightening device and the inlet orifice
far that the length of wire necessary for the production of a lacing stud plate
protrudes. The jaws A now clamp the wire in this position, whereupon the two
cutters CD move towards each other.
In this manner the necessary bend is given to the wire by the bending plate d
moving together with the cutter D (I Figure 5). At the same time the cutter C
as it moves inwardly bends with its inclined surface s s² the length of wire over
the cavity a in the clamping jaws A, the edge k preventing the wire from moving
to one side. After the backward movement of the cutters CD the hammer B is
driven forwards, the bent piece of wire protruding from the inlet orifice is pressed

page_text: into the cavity a in the clamping jaws A, thereby stamping the lacing stud plate,
(Figure 2).
The hammer B now moves back and the feed mechanism again pushes the wire
forwards a suitable length; the cutters CD together with the bending plate
approach each other again and exert the action herein before described. At the
same time, as shown in Figure 1, they cut off the lacing stud plate just stamped
together with its shank (II Figure 5). In order that prior to the cutting off the
stud still attached to the wire may, when the wire it pressed sideways by the
cutter C, be able to move in this direction, and may not be bent after it has been
finished. I provide on the other cutter D the inclined surface e n as hereinbefore
stated. As will be easily understood the stamping of the lacing stud plate corre-
sponds to the heading of the nail in the manufacture of wire nails, and the cutting
of the lacing stud to the pointing and cutting off of the nail. The lacing stud
produced in this manner by the machine has its edges cut (III, Figure 5) and is
then finished in the well known manner (IV Figure 5).
The lacing stud is fixed by pushing its shank through a corresponding hole
of the material to which the stud is to be attached, and sliding a small ring
(V Figure 5) on to the shank of the stud, whereupon this shank is headed by means
of a suitable tool (VI Figure 5).
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:-
―
First. A method of manufacturing lacing studs from wire, characterized by the
wire, which is fed to the stud to a length corresponding by a step motion and then
clamped, being bent by means of jaws which are adjustable relatively to each
other, and pressed into a cavity corresponding to the stud plate, whereupon in the
next forward movement of the wire, the shank of the stamped stud is severed by
cutters simultaneously with the bending of the length of wire designed for the next
stud, substantially as herein set forth.
Second. An apparatus for carrying out the method set forth in the first claim,
characterized by the provision of a cavity a in one of the jaws A, designed for
clamping the wire, of any desired wire uail making machine, and of a nipple bon
the hammer head B, in such a manner that between the said cavity and nipple the
stud plate is stamped from a previously bent length of wire protruding from the
clamping jaws A, substantially as herein set forth.
Third. An apparatus of the kind described in the second claim, which is
characterized by the arrangement of an inclined plane forming a cutting edges,
and of a projecting edge k for guiding the wire on the cutter C and of an inclined
plane forming a projecting cutting edge e, and an inclination en on the cutter D,
the latter being firmly connected with the bending plate d so that when the cutters
approach each other the wire is suitably bent while the stud plate formed in the
previous stroke of the press is cut off, substantially as herein set forth.
Fourth. As an article of manufacture a lacing stud constructed from wire in the
manner herein set forth.
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HASELTINE, LAKE & Co.,
45, Southampton Buildings, London, W.C., Agents for the Applicant.