Improved Means and Appliances for Coiling Wire Spirals.
Year: 1890

page_text: Date of Application, 24th Oct., 1890
Complete Specification Lefs, 24th July, 1891-Accepted, 5th Sept., 1891
PROVISIONAL SPECIFICATION.
Improved Means and Appliances for Coiling Wire Spirals.
I, JOSEPH THOMPSON, of The Sphincter Grip Armoured Hose Company,
Limited, 9 Moorfields, City of London, Engineer, do hereby declare the nature of
this invention to be as follows:-
This invention relates to improved means and appliances for putting a permanent
"sett" coil in wire spirals.
In the process of coiling the wire it is first bent round within a hard steel collar
having a suitable groove formed therein in which the wire takes a large bearing to
the extent of half the circumference of the wire. Just at the point of the wire
leaving this grooved collar is fixed a hard steel roll of small diameter, this
roll can be so adjusted that any required pressure can be brought to bear upon
the wire.
The small roll on outside of circumference of wire has a relatively small bearing
on the same. The outside circumference of the wire is slightly flattened, thus
lengthening or drawing out the outside fibres of the wire, it gives the coil of wire
so formed a permanent set, and by varying the pressure on the outside roll any
required "sett" may be given to the wire, causing it to assume a much smaller
circle than to which it was originally bent which can only be destroyed by a larger
opposite power.
Upon the wire leaving this appliance, it may be caused to revolve between a series
of rolls arranged around the circumference and by putting a pressure on these rolls,
a further stretching of.the outside fibres will take place.
H. GARDNER,
Patent Agent, 166, Fleet Street, London,
Agent for the said Joseph Thompson.
COMPLETE SPECIFICATION.
Improved Means and Appliances for Coiling Wire Spirals.
I, JOSEPH THOMPSON, of The Sphincter Grip Armoured Hose Company,
Limited, 9 Moorfields, City of London, 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 :-
To carry out this invention as exemplified by the annexed sheet of drawings, of
which
Figure 1 is a face view. Figure 2 a plan elevation of a single roller apparatus,
and Figure 3 a face view of a multiple roller arrangement for spirally coiling wire.
I take a suitable block a in which is formed a die of the required diameter having
a spiral groove formed therein of requisite size and pitch. Inside this die is fixed
a hardened steel collar free to revolve, leaving a space between the die and itself
sufficient to allow the wire to pass between the two and in the groove. On the
wire being forced into this die, the wire is caused to coil round within the said steel
collar b. The end of this collar is rounded off, and at the part where the coil of
wire leaves this collar, there is fixed on an adjustable bracket c, a hardened steel
roller d, this roller is so adjusted as to nip the wire between the collar and itself.
The roller d is of small diameter and takes only a small bearing on the outside of
the wire to slightly flatten it, thus drawing or stretching the outside fibres of the

page_text: wire and causing it to assume a much smaller coil than that to which it was originally
bent.
The pressure on the roller can be regulated as required in order to give more or
less "sett " to the wire.
In some cases where a very hard wire is used, the spiral after leaving the roller,
is caused to pass in contact with a series of rollers d, d, as shown in Figure 3.
For reducing the outside diameter of the wire still further, other rollers may
be employed for the purpose, which rollers may not have contact with the
collar.
By regulating the pressure on the rollers d very hard steel wire may be coiled
and permanently "sett" to any required diameter without any liability of altering
its form.
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. In an apparatus for spirally coiling wire and ensuring a permanent "sett" in
said spirals, the loose collar, the roller in combination with a die arranged in the
manner substantially as set forth and shown.
2. First spirally coiling wire by a die and then setting the determined spiral
formation by rollers as described with reference to Figure 3 of the drawings.
H. GARDNER,
Patent Agent, 166, Fleet Street, London,
Agent for the said Joseph Thompson.