Improvements in Giraffes for making Spiral Wire Coils.
Year: 1897

page_text: This Print is in accordance with the Original Specification as it stands after
Amendment (under Section 11 of the Patents, &c. Act, 1883) as required by
the decision of the Comptroller General of the 11th day of January 1899.
Improvements in Giraffes for making Spiral Wire Coils.
I, EDWARD SAMUEL BOND, of Crown Works, Booth Street, Handsworth, in the
County of Stafford, Manufacturer, do hereby declare the nature of this invention to
be as follows:
--
This invention relates to improvements in tools known as giraffes used for the
making of spiral wire coils principally intended for woven wire matresses, and its
primary object is to so construct such tools, that while two or more wires are
simultaneously fed into the tool and thereby spiralized, they shall leave such tool in
a more regular continuous pitch, and also neatly and tightly lying close to each other,
so that their interlacing or coiling into other or similar coils may be easily done.
It is found that in previous attempts to effect this, that the two wires slightly vary
in pitch and consequently as the length given off increases, so they gradually
disconform with each other, and consequently make it very difficult, or altogether
impossible, to intercoil them with other coils.
In this my invention I construct the tool as follows:-
The body or box is much as usual, that is to say it is a tubular piece within which
is fitted the spindle in which latter are the spiral grooves along which the wires are
fed and pushed. These grooves are at the surface of the said spindle, and run
parallel to each other at a small distance apart and of a depth equal to the gauge of
the wire, and cut to the pitch required for the coil. The spindle however is now
made in two parts, the grooves in the first part being made as before described, while
in the second part one groove only is made, of a width to accommodate both (or the
whole) of the wires, so that the said wires after leaving the first part are collected
into and forced through the one groove in the second part. A space is left between
the said two parts which may adjustably be increased or diminished, and by this
means the twisting tension or pressure action upon the wires may be so regulated
that the permanent set given to the coils as they pass thence is equal and
continuously regular. The outer end of the spindle (that is beyond the body or
box) serves as a mandril for a short distance.
Dated 4th day of October 1807

page_text: Improvements in Giraffes for making Spiral Wire Coils.
I, EDWARD SAMUEL BOND, of Crown Works, Booth Street, Handsworth, in the
County of Stafford, Manufacturer, do hereby declare the nature of this inven-
tion 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 improvements in tools known as giraffes used for the
making of spiral wire coils principally intended for woven wire mattresses, and its
primary object is to so construct such tools, that while two or more wires are
simultaneously fed into the tool and thereby spiralized, they shall leave such tool
in a more regular continuous pitch, and also neatly and tightly lying close to each
other, so that their interlacing or coiling into other or similar coils may be easily
done. It is found in previous attempts to effect this, that the two wires slightly
vary in pitch and consequently as the length given off increases, they gradually
disconforin with each other, and consequently make it very difficult, or altogether
impossible, to intercoil them with other coils.
In order to more clearly explain this my invention, I have appended hereunto an
illustrative drawing upon which are figures and numbers of reference, in which
similar numbers refer to the same thing or part.
Fig. 1, is a part sectional view of this my invention.
Fig. 2, is also a part sectional plan view of the invention on line A—B (Fig. 1).
Fig. 3, is a cross sectional view of the giraffe on line C-D (Fig. 1) showing the
double feed grooves.
Fig. 4, is a cross sectional view of the giraffe on line E-F (Fig. 1) showing the
single delivery groove.
According to this my invention I construct the tool as follows:-The body or
box 6, is much as usual, that is to say it is a tubular piece within which is fitted
the spindle in which latter are the spiral grooves along which the wires are fed
and pushed. These grooves are at the surface of the said spindle, and run parallel
to each other at a small distance apart and of a depth equal to the gauge of the
wire, and cut to the pitch required for the coil. In this my invention however, the
spindle is now made in two parts 7 and 8, the grooves 9 and 10, in the first part 7,
being made as before described, that is, parallel to each other with a division
piece 11, between, while in the second part 8, one groove 12, only is made, of a
width to accommodate both (or the whole) of the wires, so that the said wires after
leaving the first part 7 at 13, are collected into and forced through the one groove in
the second part. A space 14, is left between the said two parts 7 and 8, which
may adjustably be increased or diminished, and by this means the twisting tension or
pressure action upon the wires may be so regulated that the permanent set given
to the coils as they pass thence is equal and continuously regular. The outer
end 15, of the spindle (that is beyond the body or box) serves as a mandril for a
short distance in the usual manner.
The wires are pushed forward through the two grooves 9 and 10, in the direction
of the arrow 16, and having reached the space 14, they are collectively passed into
the groove 12. By slightly turning around the part 8, in the one or, other
direction (as the case may need) a twist or set is given to the two wires which
keeps them uniformly together. Again, it rarely happens that two successive coils
of wire are of the same hardness, and therefore if passed through the same ordinary
giraffe, the resultant coils would vary in pitch, as for instance the softer the coil
the lesser the pitch produced. Now when it is found from such a cause that a
coil issues smaller than the standard required, by giving the part 8, a slight turn
outwards the pitch of the coil will be thus lengthened and vice versa.

page_text: Having now particularly described and ascertained the nature of this my said
invention, and in what manner the same is to be performed, I declare that
I am aware of the Specification of Letters Patent No. 12632 of 1893, granted to
Henry Harris Lake and I make no claim to giraffes of the construction described
and claimed therein, but what I claim is :-
:-
1. A giraffe for making spiral coils in which two adjustable parts 7 and 8 having
the guiding grooves, are employed, having a space between them, substantially as
set forth and shown.
CHARLES T. POWELL,
Applicant's Agent.