Year: 1886

page_text: Date of Application, 9th July, 1886.
Complete Left, 6th Apr., 1887.
Complete Accepted, 7th June, 1887.
We ALFRED SOHIER BOLTON, and THOMAS BOLTON, both of Oakamoor Mills near
Cheadle, in the County of Stafford, Copper and Brass Manufacturers, do hereby
declare the nature of this invention to be as follows:-
Our invention relates to a novel method of drawing wire through several stages at
one operation.
It has already been proposed to subject wire to a series of drawings through a set
of dies mounted on one draw-bench, and the use of complicated mechanism has been
suggested for adjusting the speed of travel of the wire in its progress through the set
of dies. To render this complicated mechanism unnecessary, and yet to maintain the
proper tension on the wire, is the object of the present invention.
When subjecting wire to the action of two or more dies consecutively, the wire led
from the hank on the reel, and passed through the first die of the set, is laid around
a driven block or roller, whence it passes through the second die, then around a
second driven block or roller, and so on until it reaches the take-up drum.
We now propose, in driving these blocks or rollers, to give them a surface speed in
excess of the rate of travel intended to be imparted to the wire, and to rely on the
friction of contact set up between the rollers and the lapped wire, to effect the
requisite draught;-So that whatever elongation of the wire takes place in passing
through the dies, no adjustment of the speed of the blocks or rollers is necessary,
owing to the continual slip of the wire upon their surfaces.
The shafts of these blocks or rollers we fit with band pullies, and drive the same by
bands, leading, say, from overhead pullies, or the last shaft of the series may be the
medium for transmitting motion to the remainder, or they may be driven by any other
mechanical arrangement.
The take-up drum may be driven from a counter shaft, also actuated from overhead
driving gear, but rotary motion will be transmitted to the drum through friction gear,
which will "give" when there is a tendency for the take-up drum to put too heavy a
strain upon the wire.
By availing ourselves of the slip of the wire on the driven blocks or rollers, we
secure proper draughts on the wire, without providing any special and expensive
mechanism for adjustment.
Dated this ath d... 1000
NEWTON & SON,
Agents for the Applicants.

page_text: We ALFRED SOHIER BOLTON and THOMAS BOLTON, both of Oakamoor Mills near
Cheadle in the County of Stafford, Copper and Brass Manufacturers, 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:-
Our invention relates to a novel method of drawing wire through several stages at
one operation.
--
It has already been proposed to subject wire to a series of drawings through a set
of dies mounted on one draw-bench, and the use of complicated mechanism has been
suggested for adjusting the speed of travel of the wire in its progress through the set
of dies.
To render this complicated mechanism unnecessary, and yet to give the proper speed
of travel to the wire, is the object of the present invention. When subjecting wire
to the action of two or more dies consecutively, the wire led from the hank on the
reel, and passed through the first die of the set, is laid around a driven block or
pulley, whence it passes through the second die, then around a second driven block or
pulley, and so on until it reaches the take-up drum or block.
We now propose, in driving these blocks or pulleys, to give them all a surface speed
in excess of the maximum rate of travel intended to be imparted to the wire, and to
rely on the friction of contact set up between the pulleys and the lapped wire, to effect
the requisite draught, so that whatever elongation of the wire takes place in passing
through the dies, the travel of the wire between each die adjusts itself in proportion
to the amount of elongation and the speed at which it is coiled on to the finishing or
take-up block.
In the accompanying drawing, Fig. 1 is a side elevation, and Fig. 2 is a plan view,
of a draw-bench arranged to carry out our improved mode of drawing wire.
In these figures, A is the bench top and framing, B B B are the dies mounted in
the usual, or it may be in any other convenient manner, and set at suitable distances
apart. Between these dies are mounted flanged or grooved drawing blocks or
pulleys C. These blocks C are carried on the ends of axles C, which turn in bearings
fitted to the draw bench.
D is a reel mounted loosely on a fixed axle D' standing up from the draw bench.
This reel is charged with the bank of wire to be drawn, and delivers its wire to the
first die B under the stress of the draught imparted thereto during the drawing
operation.
E is a vertical shaft mounted in a foot step carried by the end framing of the draw
bench, and projecting upwards through a fixed collar or bearing fitted to the upper
face of the bench.
F is the finishing block for taking up the drawn wire and maintaining a proper
draught thereon as it leaves the last of the series of dies B.
This finishing or take-up block is locked to its shaft so as to rotate therewith.

page_text: Motion is imparted to the several blocks C C and F from overhead shafting G G*,
Fig. 1.-Each of these shafts is furnished with four grooved band pulleys, from which
bands lead down to grooved pulleys fitted to the axles C, and to a transverse shaft G₁
respectively.
Keyed to the shaft G¹ is a mitre wheel G³, which gears into a mitre wheel E¹, loose
on the vertical shaft E.
A sliding clutch E' fitted to this shaft serves to lock the mitre wheel to the shaft E
and start the machine.
When, however, the drawing is required to cease, the attendant, by lifting the clutch
lever E, will lift the clutch from contact with the boss of the mitre wheel E¹, when
the rotation of the take-up block, and consequently the draught on the wire, will
cease. The blocks C, however, will continue to rotate and slip in the coils of the wire.
In this arrangement it will be seen that no provision is made for adjusting the speed
of the blocks or pulleys, such a contrivance being unnecessary, owing to the continual
slip of the lapped wire upon the blocks C.
We may state that we prefer to drive all the blocks at one circumferential speed, as
the machine is then adapted for the lightest or heaviest draughts which the material
operated upon will stand at each die.
From the foregoing explanation it will be understood that in availing ourselves of
the slip of the wire on the driven blocks or pulleys, we secure proper draughts, on the
wire, without providing any special and expensive mechanism for adjustment of their
speed, the friction between the drawing blocks and the wire causing the latter to
travel exactly in accordance with the rate at which the finishing block winds it up
after passing through the last die.
Having now particularly described and ascertained the nature of our said invention
and in what manner the same is to be performed, we declare that what we claim is ;-
Driving the draw-blocks of the draw-bench at a surface speed in excess of that at
which the wire is designed to travel over them respectively, and preferably at the
surface speed imparted to the finishing or take-up block, for the purpose above
set forth.
T 1
1
. י
1000