Year: 1886

page_text: We GEORGE HOOкHAM, & PHILIP HOOкHAM Manufacturers 7 & 8, New
Bartholomew Street Birmingham, do bereby declare the nature of this invention
to be as follows:-
In manufacturing Thread-escutcheons by our improved method we draw brass
wire to about the same section as that of the side of an ordinary Thread-escutcheon,
the section being a triangle with somewhat blunted apex, and having its sides about
three times the length of the base. Such triangle may be either isosceles or rect-
angular, or of a form between these two. By a first pair of tools we cut off a
piece of the wire to the desired length, and bend it into the form of a staple with,
preferably, two equal limbs. By a second pair of tools we form this staple roughly
into the form of a Thread-escutcheon, the two ends of the wire meeting at about
the centre point of the lowest side of the escutcheon, and abutting against one
another. By a third pair of tools we strongly compress the material and form it
to the desired shape, except that, whereas in a finished escutcheon both sides of the
triangle formed by a section of the side form less than a right-angle with the base,
by this process the outer side is left at right angles to the base, and consequently
the escutcheon has its outer sides parallel with one another, being formed in a die
with parallel sides. Finally we force the escutcheon so formed into a die with.
slightly taper sides, and thus give it its final form.
We do not necessarily employ all these processes. For instance, where great
finish is not required, we may omit the third. Also, we may, for the better junction
of the two ends of the wire, cut them with notched or serrated edges, roughly
fitting one another, or may in other ways render the joint more secure. The face
of the escutcheon may be finished by filing, or grinding in the usual way.
200
1

page_text: тргоѵешени по шапшастите VI
called Thread Escutcheons.
We GEORGE HOOKHAM and PHILIP HOOкHAM both of Nos. 7 and 8 New
Bartholomew Street Birmingham in the County of Warwick, Manufacturers, do
hereby declare the nature of the said Invention and in what manner the same
is to be performed to be particularly described and ascertained in and by the
following statement:―
In manufacturing thread escutcheons by our. improved method we draw brass
wire to about the same section as that of the side of an ordinary thread escutcheon,
the section being a triangle with somewhat blunted apex and having its sides about
three times the length of the base. Such triangle may be either isosceles or rect-
angular or of a form between the two. By a first pair of tools we cut off a piece
of the wire to the desired length and bend it into the form of a staple with
preferably two equal limbs. By a second pair of tools we form this staple roughly
into the form of a thread escutcheon, the two ends of the wire meeting at about
the middle of the lowest side of the escutcheon and abutting against one another.
By a third pair of tools we strongly compress the material and form it to the
desired shape except that whereas in a finished escutcheon both sides of the triangle
formed by a section of the side form less than a right angle with the base, by this
process the outer side is left at right angles to the base and consequently the
escutcheon has its outer sides parallel with one another being formed in a die with
parallel sides. Finally we force the escutcheon so formed into a die with slightly
taper sides and thus give it its final form.
We do not necessarily employ all these processes for instance where great finish.
is not required we may omit the third. Also we may for the better junction of the
two ends of the wire cut them off with notched or serrated edges roughly fitting
one another, or may in other ways render the joint more secure. The face of the
escutcheon may be finished by filing or grinding in the usual way.
We will now proceed to describe with reference to the accompanying Drawings
the manner in which our invention is to be performed.
Figure 1 represents the cut off piece or length of wire of a triangular or nearly
triangular figure in cross section from which a thread, escutcheon is to be made;
Figure 2 represents the length or piece of wire Figure 1 bent into the form of a
staple. The bending of the wire into the form of a staple may be effected by a
pair of bending tools or by hand; Figure 3 represents the partly made escutcheon
bent from the staple Figure 2, the ends of the limbs of the partly made escutcheon
being brought nearly together; Figure 4 represents the completely shaped and per-
fected escutcheon made from the partly made escutcheon Figure 3 and Figure 5
represents the escutcheon after it has been finished by filing or other finishing
operation.
The pair of bending or shaping tools by which the staple Figure 2 is bent into
the partly made thread escutcheon Figure 3, is represented in plan in Figure 6 and
side elevation in Figure 7, the said tools being open or separated ready to receive

page_text: the staple; and the said tools are represented in plan in Figure 8 and longitudinal
section in Figure 9 closed.
.
a is the foundation plate fixed on the bed of a press in cheeks in which plate the
two sliding tools b, c work. The opposed acting ends of the sliding tools b, c have
the figure represented and their outer ends are furnished with inclines d, d against
which inclines d, d other inclines on the slide or bolt of the press act to close or
press inwards the said tools the opening or return motion of the said tools being
effected by the coiled springs e, e represented in Figure 9. Between the opposed
acting ends of the sliding tools b, c and fixed on the foundation plate a is a taper
mandril or peg f the outline of the said peg having nearly the figure of the interior
of the escutcheon to be made.
The staple g Figure 2 being placed upon the peg or mandril f with its broad face
downwards and resting on the plate a as represented in Figures 6 and 7, the slide
or ram of the press is made to descend and simultaneously press the two tools b, c
together and cause their acting ends to compress and fashion the staple upon the
peg or mandrilf as illustrated in Figures 8 and 9. By the simultaneous advance of
the two tools b, c the sides or limbs of the staple are closed or bent upon the sides
of the peg or mandril f and by the action of the shoulders h, h of the two tools the
extreme ends of the limbs of the staple are bent at an obtuse angle to the said
limbs the bent ends nearly meeting at the middle of the lowest side of the partly
made escutcheon. A partly made escutcheon of this kind is represented in Figure 3
and is marked i. On the rising of the slide or ram of the press the two tools b, a
separate from one another by the action of the springs e, e and the partly made
escutcheon is lifted from the peg or mandril f and transferred to the tools by which
its end is compressed and closed and the shape of the escutcheon perfected.
These last named tools consist of a loose peg k represented separately in
Figures 10 and 11 having a conical base or enlargement the said peg being used
with the lower tool / represented in plan in Figure 12; side elevation in Figure 13
and section in Figure 14, the said tool 7 being fixed on the bed of a press. In the
tool is a hole or recess m of a size and shape proper to receive the stem part k of
the peg. With the combined peg k k and lower tool / the upper tool n represented
in plan and section in Figures 15 and 16 fixed to the ram or slide of the press is
used, the said upper tool n having a recess p in it of a size and shape proper to
pass over the enlarged part 2 of the peg k and the partly made escutcheon upon
the peg. The partly shaped escutcheon i Figure 3 having been placed upon the
enlarged end k³ of the peg k as represented in Figure 11 the said peg k is inverted
and its stem or narrow part placed in the hole m in the lower die as illustrated in
Figures 13 and 14. By the descent of the moveable tool n its hole or recess p
passes over the partly made escutcheon and its sides and end are firmly com-
pressed against the sides and end of the enlarged part k³ of the peg as illustrated in
Figure 17. By the operation of the tool n and part k of the peg, the parallel sides
of the partly made escutcheon are made to take the taper figure of the said part k³
of the peg so as to cause the said sides to incline inwards or towards one another
and the ends of the escutcheon are made to abut against one another and a perfect
juuction effected. The escutcheon thus operated upon by the last described tools is
represented in Figure 4 and also in Figure 17 and is marked r. The escutcheon
Figure 4 is finished by flattening the rounded base or broad face of it and removing
the burr or fin produced by the fashioning operations described, by filing grinding
or otherwise so as to give the escutcheon the form represented in Figure 5 and
marked 8.
A thread escutcheon is thus made the outer side of the wall of which is inclined
in one direction and the inner side of the said wall is. inclined in the opposite
direction as seen in the cross section of Figure 5.
Although we have described the best method with which we are acquainted of
making the thread escutcheons from wire having a triangular or nearly triangular
figure in cross section yet other equivalent methods may be employed; and although
we prefer to effect the bending, pressing and fashioning of the lengths of wire of

page_text: t
the sectional figure described by means of the tools described yet modifications
of the said tools may be employed with like effect.
Having now particularly described and ascertained the nature of our invention
and the manner in which the same is to be performed we declare that we claim as
our invention of "Improvements in the manufacture of the parts of lock furniture
called thread-escutcheons"
First Manufacturing the said thread escutcheons from lengths or pieces of wire
having a triangular or nearly triangular figure in cross section by subjecting the
said lengths or pieces of wire to a bending, shaping, closing and compressing opera-
tion substantially as herein before described and illustrated in the accompanying
Drawings.
Secondly-Making the said thread escutcheons from lengths or pieces of wire
having a triangular or nearly triangular figure in cross section by the particular
process or combination of processes described and illustrated the said process being
carried into effect by the use of the tools and appliances herein before described and
illustrated in the accompanying Drawings.