Improvements in and in Apparatus for the Drawing of Cycle Spokes and the like.
Year: 1899

page_text: PROVISIONAL SPECIFICATION.
Improvements in and in Apparatus for the Drawing of Cycle Spokes
and the like.
I, MORRIS CARSWELL, Junior, 1, Alfred Terrace, Great Western Road, Hillhead,
Glasgow, Merchant and Manufacturer, do hereby declare the nature of this
invention to be as follows:-
This invention relates to wire drawing machines more particularly intended for
use in the manufacture of the spokes of cycle wheels, its object being to enable
one end of the spoke to be butted, the butt on the other end being already formed
by being ground or turned, or by any other suitable means, while the inter-
mediate portion is formed either taper or parallel as desired.
The machine comprises a fixed head carrying the dies, and mounted upon a
suitable base, and a carriage which can be caused by means of a crank attached
to a large wheel or disc to move away from the fixed head, and on the return
stroke of the crank to move back ready for a fresh draw. The carriage has
mounted upon it suitably shaped nippers or the like by means of which the end
of the wire to be drawn is firmly held. It has also a rod, working in a fixed
bed, and operated by a cam fixed on the same spindle to which the large wheel
is keyed. On the other end of the rod, next the head, is pivotted a lever by
means of which motion is imparted to a die in a manner hereinafter to be
described.
The fixed head is provided with two grooves in each of which lies a block or
die-box, one being fixed and the other movable, each of which carries a die.
The position of the dies in their respective sliding blocks may be adjusted by
means of set screws. The lever is formed with a cam shaped piece at one end
which bears against a similar cam shaped piece on the outer end of the movable
die-box. This lever thus causes the movable die to close on the fixed die and
practically forms a wire draw plate.
The return motion of the rod to which the lever is fixed is given by a con-
veniently arranged spring. When the pressure on the lever is released the die-
box is then opened by a conveniently arranged spring.
The machine is driven by suitable gear wheels.
Dated this 28th day of September 1899.
Improvements in and in Apparatus for the Drawing of Cycle Spokes
and the like.
I, MORRIS CARSWELL, Junior, 1, Alfred Terrace, Great Western Road, Hillhead,
Glasgow, Merchant & Manufacturer, do hereby declare the nature of this inven-
Die 77

page_text: 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 and in apparatus for the drawing
of cycle spokes and the like its object being to enable one end of the spoke to
be butted during the process of drawing, the butt on the other end has been
previously formed by the wire being, ground or turned at the required point for
the purpose while the intermediate portion is formed either taper or parallel as
desired. By this means I am enabled to draw the wire of the spoke thus
obtaining a perfectly true round section and producing spokes much more
quickly and consequently more economically than hithertofore.
In order that any invention may be clearly understood and more easily carried
into practise. I have appended hereunto a sheet of drawings upon which I have
fully illustrated the nature of any said improvements together with one form of
machine for carrying the same into effect and in which it will be readily under-
stood many modifications in the mode of actuating the tools can be made.
Figure 1 is a view of a spoke wire after having been turned or ground to form
the butt at one end.
Figure 2 is a similar view to Figure 1 but shewing the wire inserted between
divided dies prior to being drawn.
Figure 3 is a section through the wires shewing the divided dies in elavation.
Figure is another view of the wire after being drawn sufficiently far to
form the butt at the other end.
Figure 5 is a view of the double butted spoke after leaving the machine.
Figure 6 is a side elevation of one form of machine suitable for drawing such
spokes.
Figure 7 is a plan of the divided draw dies shewn in same.
In carrying my invention into effect the wire for the spoke, A, is first prepared
by being ground or turned down to the required size of the spoke at a¹ thus
forming the butt a² after which the part is inserted between the divided
dies B B which are closed upon it the end of the wire is then gripped by suitable
shaped nippers C and drawn through the divided plate or dies B B¹ the inter-
mediate part of the wire being thus reduced in diameter for a regulated
distance from the reverse end to leave the length of butt required at that end
after which the dies or plates are opened and the spoke removed from the
nippers in its complete double butted form as shewn by Figure 5 with the
intermediate portion a reduced in diameter as required.
I do not confine myself to any particular mode of drawing the wire through
the plates but have illustrated the following means for carrying the same into
effect i.e. an ordinary lath bed P upon which a fixed head E is mounted together
with a carriage F which can be caused by means of a crank attached to a large
wheel or disc or by a spur H and rack K operated by a hand wheel M to move
to and from the fixed head. The carriage has mounted upon it suitably
shaped nippers C or the like by means of which the wire A to be drawn is
firmly held and afterwards released by the hand lever T while the travel of the
carriage is regulated by the adjustable stop V... The fixed head E is provided
with a slide N in which are mounted the two parts 13 and B¹ of the divided plate
or die the one part B¹ being fixed and the other B¹ movable while the exact
position of the divided dies may be adjusted by suitable set screws.
I may actuate the moving die from the carriage by means of a rod connected
thereto and pevotted to a lever having a cam shaped piece at one end bearing
against a similar cam shaped piece on the outer end of a movable die box the
action of which would close the divided dies with a spring for opening same
again when released by cam but I prefer operating the moving part of the dic
independently of the carriage by the worm screw R and hand wheel S. Studs U
are provided on a face of one of the half dies and enter into recesses in the
other half to retain the two halves true together.

page_text: Having now particularly described and ascertained the nature of my said
invention and in what manner the same is to be performed I declare that
what I claim is:-
The manufacture of and apparatus for drawing double butted cycle spokes and
the like characterized by first reducing a portion of the diameter of the wire and
drawing it a regulated distance through a divided die or draw-plate so as reduce
the intermediate part of the wire and leave each end butted.
Dated this 28th day of Tul 1000
LEWIS WM. GOOLD,
Agent for Applicant,
5 Corporation Street, Birmingham.