Improvements in or relating to Wire Drawing Machines,
Year: 1898

page_text: PROVISIONAL SPECIFICATION.
Improvements in or relating to Wire Drawing Machines,
I, LOUIS BOUET, of 244, Newhall Road, Sheffield, in the County of York, Wire
Drawer, 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 the ends of the spokes to be butted "while the intermediate portion is
formed either parallel or taper 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 rack and pinion
to move away from the fixed head. 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 also carries suitably shaped guide plates by means of which
motion is imparted to the dies in the manner hereinafter to be described.
The fixed head is provided with four radiating grooves in each of which lies,
so as to slide freely therein, a block which carries a die. The position of the dies
in their respective sliding blocks may be adjusted by means of set screws. At
the outer end of each groove in the head is pivotted a lever provided with a cam
shaped piece which bears against a friction roller carried on the outer end of
each sliding block. These levers are arranged to project from the head at that
side of the latter on which is situated the drawing carriage, each lever being so
shaped that a roller carried at its end will bear upon one of the guide plates
on the carriage.
It will thus be readily understood that as the carriage moves away from the head
in the act of drawing the wire through the dies, the latter are caused to approach
each other as the rollers on the ends of the levers mount the inclined planes of
the guide plates.
If desired the lowermost die may be fixed either by suitably fastening the lever
controlling it or otherwise, as found convenient, while the other dies are operated,
or the top and bottom dies may be caused to first come into action and afterwards
the two side ones or vice versa.
Conveniently springs are arranged so as to hold the ends of the die operating
levers in contact with the guide plates, springs being also arranged, if desired, to
cause the dies to open at the end of a draw.
The machine is driven by suitable gearing and may be provided with an
automatic device by means of which the driving belts or the like are shifted at
the end of a draw so as to reverse the movement of the carriage, the change of
direction of motion being accompanied by a change in the speed of travel of the
carriage so that the latter may make a quick return so as to be ready for a fresh
draw.
Data 101.
T
1000

page_text: improvements in or relating to wire
rawing D.
I, LOUIS BOUET, of 244, Newhall Road, Sheffield, in the County of York, Wire
Drawer, 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:-
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 the ends of the spokes to be butted" while the intermediate portion is
formed either parallel or taper 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 rack and pinion
to move away from the fixed head. 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 also carries suitably shaped guide plates by means of which
motion is imparted to the dies in the manner hereinafter to be described.
At
The fixed head is provided with four radiating grooves in each of which lies,
so as to slide freely therein, a block which carries a die. The position of the dies
in their respective sliding blocks may be adjusted by means of set screws.
the outer end of each groove in the head is pivotted a lever provided with a cam
shaped piece which bears against a friction roller carried on the outer end of
each sliding block. These levers are arranged to project from the head at that
side of the latter on which is situated the drawing carriage, each lever being so
shaped that a roller carried at its end will bear upon one of the guide plates
on the carriage.
It will thus be readily understood that as the carriage moves away from the head
in the act of drawing the wire through the dies, the latter are caused to approach
each other as the rollers on the ends of the levers mount the inclined planes of
the guide plates.
If desired the lowermost die may be fixed either by suitably fastening the lever
controlling it or otherwise, as found convenient, while the other dies are operated,
or the top and bottom dies may be caused to first come into action and afterwards
the two side ones or vice versa.
Conveniently springs are arranged so as to hold the ends of the die operating
levers in contact with the guide plates, springs being also arranged, if desired, to
cause the dies to open at the end of a draw.
The machine is driven by suitable gearing and may be provided with an
automatic device by means of which the driving belts or the like are shifted at
the end of a draw so as to reverse the movement of the carriage, the change of
direction of motion being accompanied by a change in the speed of travel of the
carriage so that the latter may make a quick return so as to be ready for a fresh
draw.
In the accompanying drawings.
Figure 1 is a side elevation of the improved machine,
Figure 2 is a front elevation,
Figure 3 is a plan.
Figure 4 is an enlarged plan of the head,
Figure 5 is an enlarged front elevation of the same,
Figure 6 is an enlarged plan of an outer die box,
Figure 7 is a similar view of an inner die box.
Like letters indicate like parts throughout the drawings,

page_text: From a base A rise legs B supporting a bed or table C upon which is a head D
carrying die-boxes E with dies F which are moved radially in the manner here-
after described. To the head D are pivotally attached levers G G G³, the
levers G G3 having cam-shaped pieces G³ G formed on one end, the lever G
being arranged to operate a similar cam G³ carried upon the pivot pin by which
it is attached to the head. The free ends of the levers G G¹ G2 are provided with
adjustable runners or rollers HH¹H².
Behind the head D upon the bed C is arranged a sliding carriage K provided
with a rack K¹ to enable it to be moved along the bed. Upon the carriage K
are guide plates LL' L' against which lie the rollers H H¹H² adjustably carried
on the ends of the levers G GG, so that as the carriage moves away from the
head the rollers passing up the inclines of the guide plates cause the levers G G¹ G²
to move about their pivots in the head D.
The die-boxes E are provided with rollers M with which the faces of the
cams G3 G4 G5 come in contact. Each of the die-boxes E has in it, a groove, one
side of which is undercut. The dies F are bevelled to fit into this groove being
there retained by plates E¹ secured by bolts and nuts E3 E3 in the manner shown
in Figures 6 and 7. With this arrangement the position of the dies F in the
die-boxes can be accurately adjusted by means of set screws F¹, the dies being
then clamped in position by means of plates E. The die-boxes can move radially
being guided by plates E, the inward radial movement being brought about by
the cams G3 G4 G5 acting upon the rollers when the levers GG G2 are caused
to move as the carriage K travels along the bed. On the return of the carriage
the die-boxes and dies are caused to move radially outwards by means of
springs N. On the bed C, preferably at the end remote from the head D) is
arranged a spindle P carrying fast and loose pulleys 0 and 0%
Upon the
spindle is keyed a pinion P" which engages with a toothed wheel 12 on a spindle 1³
which carries a pinion 1 engaging with the rack K' on the carriage K. The
spindle P also carries two smaller fast and loose pulleys PP.
A plate R upon the bed C serves to retain the rack K in position. Upon the
end of the bed between the two pairs of fast and loose pulleys is situated a plate
or bracket R¹ which supports a plate R³ carrying guide pins R. Plates RR5
slotted to allow the passage of the guide pins R³ are arranged so as to slide upon
the plate R, these sliding plates carrying at their ends the belt shifting
forks RR and being kept in place by the plates R³ R. The slots in the
plates R and R allow of their being moved a sufficient distance to throw the
belts controlled by them in or out of gear.
On a bracket $2 beneath the bed C is pivotted at S¹ a bell crank lever S, one
arm of which is attached to the end of the plate R5, the other end being con-
nected at $3 by a chain $4 with a foot-board $5. As will be seen pressure by the
foot on the board $ will cause the lever S to turn about the pivot S¹ and so
shift the position of the belt from the pulley O to the pulley 01.
Upon the back of the carriage K is a projection K slotted at K³ to which is
adjustably attached by bolts passing through the slot K³, a plate K. The latter
is curved or cam-shaped and arranged to come in contact with a roller R upon
the plate R5. The plate R carries an arm R at the end of which is a roller R
(Figure 1) against which the curved plate K+ also comes in contact, thus bringing
about the shifting of the belt from the fast pulley O' to the loose pulley O and
a corresponding movement of the belt from the loose pulley 15 on to the fast
pulley P, the latter belt being arranged to drive the mechanism and conse-
quently the carriage in the opposite direction, giving a quick return.
arm R on the plate R is extended on the side of this plate remote from the
roller R, this extended part carrying a roller R with which a plate K5 carried
on the end of the rack K¹ or otherwise connected to the carriage K comes in
contact when the carriage is returning, the effect being to shift the reversing
belt from the fast pulley P on to the loose one 1.
The
In order to start the mechanism again the belt must be shifted by means of

page_text: the lever S from the loose pulley O on to the fast pulley O¹ in the manner pre-
viously described.
The carriage K is provided with nippers T of suitable construction for nipping
the end of the wire to be drawn. The nippers are connected to the carriage K
by a bolt passing through a slot T in the latter, this arrangement allowing of
the position of the nippers to be varied relatively to the head.
The plate K as above described can be adjusted so as to regulate the moment
at which the drawing process is to cease.
The levers G G G are controlled by springs in order to keep the rollers H H'H²
upon their respective guide plates.
The arrangement of the spring for controlling the rod G is as follows:-
A rod D attached to the head D at D' passes across the lever G and has a
spring D attached to its outer end and to a ring 16 on the base A of the machine.
A pin 13 on the lever G prevents the rod 12 from slipping. The side levers G1 G2
are controlled by means of rods V and V which are pivotted at .V on the base A
and connected beneath the bed C by a spring V3, the upper ends of the levers V
being forked to engage with pins V and V on the levers G¹G².
In the above description only three dies have been mentioned as being operated
by the levers and guide plates as the carriage moves away and draws the wire
through the dies, but if desired a fourth die may be employed and operated in
the same manner, but preferably this fourth die is fixed.
Having now particularly described and ascertained the nature of this said
invention and in what manner the same is to be performed, I declare that what
I claim is:
1. In a spoke drawing machine the combination with a fixed head such as D
carrying radially movable dies of a movable carriage such as KK, bearing
guide plates LL L² for operating levers pivotted on the head D and causing the
dies to converge as the carriage moves away from the head and draws the wire
through the dies substantially as described.
2. In a spoke drawing machine regulating the length of the spoke drawn by
the contact of an adjustable cam plate such as K upon the movable carriage with
belt shifting mechanism substantially as described.
3. In a spoke drawing machine the combination with a carriage and tongs
such as K and T of guide plates such as LL' L² secured to and moving with the
carriage.
4. In a spoke drawing machine the combination with a fixed head having
adjustable dies levers such as GGG2 for moving the dies and guide plates such
as L L L for moving the levers of rollers H H H³ whose position in relation
to the arms G GG2 is adjustable.
5. The complete spoke drawing machine substantially as described and illus-
trated in the accompanying drawings.
6. The complete belt shifting mechanism for the hereindescribed wire drawing
machine substantially as described and illustrated in Figures 1, 2, and 3 of
the accompanying drawings.
Dated this 23rd day of May 1898.