Improvements in and connected with the Manufacture of Iron Wall Carriers for Electric Insulators and other objects.
Year: 1899

page_text: Date of Application, 7th Jan., 1899-Accepted, 6th May, 1899
Improvements in and connected with the Manufacture of Iron Wall
Carriers for Electric Insulators and other objects.
I, FRIEDRICH UNTERBERG, of Obertsroth, near Gernabach, in the Empire of
Germany, Electrician, do hereby declare the nature of this invention and in
what manner the same is to be performed, to be particularly described and ascer-
tained in and by the following statement:-
The subject of the present invention has reference to the manufacture of
wrought iron wall carriers and wall-hooks of all kinds, for the purposes here-
after described.
By the manufacture of these articles in the manner described, the articles are
made of a single piece, quite contrary to the wall carriers and wall fasteners
hitherto in use, in which the part to be fixed, as the foot in the masonry, always
had to be rivetted to the part forming the bed plate. In connection with the
present process, special attention has also been given to the rational using up of
the material.
For this purpose, the pieces to be made are either stamped out of a cruciform
shape, the feet being then formed by bending down two opposite arms of the
cross, and the arms remaining straight, forming the bed plate; or the material
is merely stamped in a manner corresponding to the shape of the bed plate, and
out of this piece the parts forming the feet are then stamped from within same
in a longitudinal direction. Taking, for instance, the manufacture of wall car-
riers, to be used for fixing insulators, the holes are punched and the feet pressed
into a zig-zag shape, by means of specially constructed bottom-dies, in one pro-
cess; and by the second process, the feet are bent down, in case cruciform parts
are used; or, in case the feet are to be formed by being punched out in the
longitudinal direction, then these are pushed downwards by the first process and
pressed into zig-zag shape in the second process.
In the principal mode of manufacturing wall carriers, or fasteners which is
that where they are male from cruciform pieces, the second process may be
advantageously completed by providing the bottom-side with an appliance which
throws out the carrier each time, when completely pressed.
The annexed drawings serve to explain the manufacture and the tools employed.
Figure 1 shews a stamped piece of a cruciform shape, from which the wall
carriers or fasteners are made, whilst Figures 2, 3, and 4 shew a wall carrier or
fastener completed, made from such a piece.
Figures 5 and 6 shew the plan and elevation of a wall carrier, in which the
fect have been punched out of its bed plate in a longitudinal direction, and bent
down.
Figures 7, 8, and 9, shew the plan, side-view and section, of the bottom die
for making a wall carrier or fastening stamped out of the cruciform shape, viz.,
that bottom die which is used for the first process; whilst Figures 10 and 11
shew the plan and side view of the punch user for this process.
Figures 12, 13 and 14, shew the front elevation, plan and section, of the

page_text: bottom dies which are used for the second process in making such a carrier or
fastening; whilst Figures 15, 16, and 17, shew the front elevation, plan, and
section, of the punch used for the second process.
Figures 18 and 19 shew the plan and elevation of the bottom die, and Figure 20
the elevation of the punch, for the first process in making carriers or fastenings
as shewn in Figures 5 and 6.
Figures 21 and 22 shew the punch for the second process in making such a
carrier or fastening; and Figures 23 and 24 shew the corresponding bottom
dies for that purpose.
In the case of making wall carriers or fastenings stamped in a cruciform
shape, the piece of material is of the form of Figure 1.
Of this piece the parts b, which, when the carrier or fastening is completed,
form the feet, are bent in zig-zag shape in the first "phase" of working, and at
the same time, the part a, which, when the carrier or fastening is completed,
forms the bed-plate for fixing the insulators, is provided with the holes required
for this purpose.
For this purpose, the bottom die (Figures 7, 8, and 9) consists of a bed-plate c
into which a steel plate d is dove-tailed; across this steel plate d there are steel
plates f-like-wise of a dove-tail shape, and the surfaces of which are of a
zig-zag form, as shewn by Figure 8, for the purpose of forming the zig-zag form
of parts b in 'the cruciform piece. As a matter of course, the steel plate d is pro-
vided with several holes c, arranged at fixed distances, through which the
material punched out may fall down. On the bed plate care also screwed the
plates ; and these serve for guiding the stamps of the punch which will now be
described. The latter consists of a bed-plate i, which, with its trunnion ¹, is
fixed on the bottom-die; and on the underside of same there are two parts k, of
steel, shewn in Figures 10 and 11, and which may suitably be fixed by means
of a dove-tail. The lower surfaces of these parts & are formed in zig zag, to corre-
spond with the surface of parts f. When the punch moves downwards, these
parts press the side pieces 6 of the cruciform piece (Figure 1) into a zig-zag
shape. At right angles to parts k, the bed-plate i carries a steel plate m, which
carries the stamp n, which serves for punching the holes. As a matter of course,
these stamps may be moved according to the number of holes to be stamped, and
for this purpose, the steel plate m is inserted in the bed plate i in such a manner
that it may easily be exchanged.
For bending the side pieces 6 of the cruciform piece (Figure 1), the bottom
die (Figures 12 to 14), and the punch (Figures 15, 16, and 17) are used. The
bottom die consists of a bed plate o, to which the steel parts are fastened. At
right angles to the latter there is a steel plate 7, and into the notch q' of same
the parts enter. The plate q is fastened to the bed plate o on springs, as is
shewn in Figures 12 and 13, and when working the plate q is every time pressed
downwards, together with the piece of material placed on same, by means of the
punch which will shortly be described.
By means of parts p, the side pieces 6 of the cruciform piece (Figure 1) are
turned up, but as plate q, in the notched part 23 (Figure 13) is narrower than
the side pieces a of the cruciform piece, the side pieces 6 are at the same time
cut further in, and bent up; and thereby the carrier or fastening as represented
in Figures 2 to 4 is made. The punch represented in Figures 15 and 16, for the
purpose of attaining the object in view, consists of a bed-plate s, to which a
plate is fastened. Both have notches r on the right and on the left, and in
these the pieces p of the bottom die move. The stems (Figure 17) remaining
between the notches must of course, be narrower, by double the thickness of the
material of which the carrier or fastener is to be made,-than the stem formed
by the notches in the bed-plate q. As soon as the punch rises, the bed plate-
resting on springs of the bottom die will also rise, and thereby each time throw
out the completed carrier or fastening.
If it be desired to make a carrier or fastening, the feet of which are stamped

page_text: out in the longitudinal direction of the carrier or fastener, such as is repre-
sented in Figures 5 and 6, the first process is to stamp out the feet (as a matter
of course the holes for fixing the insulators are in this case struck out before-
hand, at the same time as the material is cut). For this purpose a bottom die
is used, such as is represented in Figures 18 and 19, and which consists of a bed
plate V, to which the steel plate is attached. Going through both of these,
longitudinal slits y are provided, through which the material, which is stamped
out downwards by means of the cutting edges of the punch z (Figure 20), is
bent downwards. As a matter of course, the stem y' remaining in the bed plate
between the two slits must be narrow by twice the thickness of the material-
than the slit existing between the two cutting edges 2ª.
The second process then is to press the feet in zig zag. For this purpose the
bottom die A, as represented in Figures 23 and 24, and a punch B, as repre-
sented in Figures 21 and 22, are used. Between the two parts, that is to say,
between the bottom die and the punch, a wedge is then placed, the surface of
which must, as a matter of course, also be formed in zig zag, so that, when the
half-finished carrier or fastening is put in, both feet may be pressed simul-
taneously.
Bearing in mind what has been said before, this procedure will be easily
understood without further explanation.
As a matter of course, the same process may be used, with tools of a somewhat
modified form, for making carriers or fastenings for other purposes; and also
for making wall hooks for gutter pipes and the like.
Having now particularly described and ascertained the nature of this inven-
tion and in what manner the same is to be performed, I declare that what I
claim is:-
1. The herein described manufacture of wrought iron wall carriers or fasten-
ings, namely, carriers or fastenings comprising bed plate and feet in one piece,
stamped out in shapes as set forth, made by cutting, stamping, and pressing the
iron substantially in the manner as herein set forth.
2. The wrought iron wall carriers or fasteners, set forth with reference to and
shewn in Figures 1 to 4, and Figures 5 and 6, respectively made in the manner
and for the purposes specified.
3. In the manufacture of articles as herein set forth and claimed, the employ-
ment of tools comprising, first, a set of bottom die and punch, in which, at right
angles to the top plate d, and to the plate m carrying the stamps n, steel plates f
and k, respectively, are arranged, said plates having corrugated surfaces, whereby
in punching out the holes, the feet may at the same time be pressed in zig-zag
form; and, second, a set of bottom die and punch, in which, plates b are provided
at right angles to the bed plate g of the bottom die, whilst the punch has a
plate with slits for receiving the said plates ; substantially as and for the
purposes set forth.
4. In the manufacture of articles as herein set forth, the employment of, first,
a set of bottom die and punch, in which the bed plate w of the bottom die has
longitudinal slots y, and the punch cutters z', for the purpose specified; and,
second, a set of bottom die and punch, having a plate, the upper and lower
surfaces of which are corrugated; substantially as and for the purposes set
forth.
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