Year: 1896

page_text: Date of Application, 15th May, 1896
Complete Specification Left, 13th Feb., 1897-Accepted, 24th Apr., 1997
We, WALTER BERNARD CHALLEN, and TAYLOR AND CHALLEN LIMITED,
both of Derwent Foundry, Constitution Hill, in the City of Birmingham,
Engineers, do hereby declare the nature of this invention to be as follows:-
This invention relates to the manner in which we construct and arrange a
machine for the uniform and rapid swaging of the spokes of cycle wheels and other
like wires or bars.
In carrying our invention into effect we mount a small throw crank shaft upon
the upper part of a cast iron or other frame mounted on suitable stands, and drive
the shaft at a high rate of speed preferably by means of belting transmitting motion
from a counter-shaft. The crank shaft is connected to the upper die block or
swaging tool arranged beneath it by means of a short connecting rod, and thus the
block is continuously reciprocated during the revolution of the shaft. The lower
die block or swaging tool is arranged in guides formed in the framing immediately
beneath the upper block and is adjusted to the required position by a wedge
operated with a lever provided with a cam-shaped working end.
The wire or bar to be swaged is fixed in a chuck carried at one end of a spindle
having its axis central with the swaging dies. Upon the opposite end of the
spindle we mount fast and loose belt pulleys for receiving motion from the counter
shaft. The chuck is so constructed that the wire can be gripped or released
without stopping the spindle.
The front bearing of the spindle is carried on a slide which is mounted upon the
base of the machine and reciprocated horizontally by a screw operated by belt
driven pulleys. A sliding feather key is fitted to the screw, and the circular
motion of the driving pulley is thus transmitted to the screw causing the
reciprocation of the slide.
We preferably drive the screw of the slide by means of belt pulleys mounted
loosely upon the shaft and running in opposite directions, the required pulley being
connected with the shaft by a friction clutch arranged between the pulleys. We
sometimes arrange for the automatic regulation of the travel of the slide in each
direction with suitably arranged stop pieces in connection with the clutch.
The operation is as follows.
The machine is set in motion and kept continuously running. The wire is then
gauged to a stop for length, and gripped in the revolving chuck. In swaging
double butted spokes for which this machine is principally employed the total
pressure to ensure the correct gauge in the swaged portion is now put on by the
wedge and lever arrangement hereinbefore described, and the automatic traverse
is set in motion by means of the starting handle. The traverse motion is continued
to the required limit when the swaging pressure is relieved, and the finished spoke
released and removed from the chuck. The slide is then returned to the starting.
position to receive a fresh wire.
1000
MARKS & CLERK,
18 Southampton Buildings, London, W.C., and
13 Temple Street, Birmingham, Agents for the Applicants.

page_text: We, WALTER BERNARD CHALLEN, and TAYLOR AND CHALLEN LIMITED,
both of Derwent Foundry, Constitution Hill, in the City of Birmingham,
Engineers, 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 the manner in which we construct and arrange a
machine for the uniform and rapid swaging of the spokes of cycle wheel and other
like wires or bars.
In the two accompanying sheets of explanatory drawing to be hereinafter
referred to
Figure 1 on Sheet 1 is a front elevation of a machine constructed in accordance
with our invention.
Figure 2 is a sectional end elevation (on the line 1, 2, 3, 4, Figure 1) representing
a portion of the machine.
Figure 3 is
a front elevation and Figure 4 an end elevation, to an enlarged
scale, of the dies and blocks.
Figure 5 is a plan and Figure 6 a section of one of the dies showing the position
of the springs H for returning the upper die with its block.
Figure 7 on Sheet 2, is a section, and Figure 8 a plan of the chuck.
Figure 9 is a section of the slip driving arrangement for the chuck driving
pulley.
Figure 10 is a section of the traversing or slide driving pulleys and clutch.
Figure 11 is an elevation and Figure 12 a plan representing the appliances for
adjusting the bottom die.
The same reference letters in the different views indicate the same parts.
In carrying our invention into effect we mount a small throw crank or eccentric
shaft such as A upon the upper part of a cast iron or other frame mounted on
suitable stands, and drive the shaft at a high rate of speed preferably by means of
belting transmitting motion from a counter shaft to the pulley B. The shaft A is
connected to the upper die or swaging tool C arranged beneath it by means of a
sliding block such as D, and thus the upper die block is continuously reciprocated
during the revolution of the shaft, the down stroke being effected by the eccentricity
of the shaft and the up stroke by the action of a spring E interposed between the
top die block D and the bottom die block F. The lower die block F and die or
swaging tool G is arranged in guides formed in the framing immediately beneath
the upper die and block which is also arranged in guides as illustrated. The
springs H between the dies cause the upper die C to return with the block D. The
bottom block and die are adjusted to the required position by a wedge as J
Figures 1, 2, 11 and 12, operated with a lever K provided with a cam shaped
working end K' and pivotted upon the stationary but adjustable eccentric bush K².
The wire or bar to be swaged is fixed in a chuck L carried at one end of a
spindle L' having its axle central with the swaging dies. Upon the opposite end
of the spindle we may mount fast and loose belt pulleys for receiving motion from
the counter-shaft, but preferably employ a releasing or slip driving pulley M
Figures 1 and 9. The chuck L is constructed in the manner illustrated at Figures 7
and 8 in order that the wire can be gripped or released by simply operating the
lever L without stopping the spindle. The releasing or slip mechanism for the
pulley M consists of balls as M on opposite sides of the pulley which engage
with the sleeve M and steel plate M³ respectively as illustrated at Figure 9.

page_text: The driving spindle L' (Figure 1) is connected with the sleeve M² by a key piece
such as M and the plate M with the sleeve M' by a key piece M and thus the
spindle L' is caused to revolve with the pulley M which is driven at a high speed.
But at the instant that the wire is gripped by the swaging dies and thus prevented
from partaking of the circular movement of the spindle L' the arrangement of the
ball connections illustrated at Figure 9 permits the pulley to slip between the
sleeve M2 and the washer M³. On the release of the wire from the swaging dies
the connection of pulley and sleeve is instantly effected by the action of the spring.
We thus provide an effective means for the automatic release and engagement of
the pulley M whilst it is continuously in motion, thereby preventing any twisting
action upon the wire when it is gripped in the dies.
The front bearing of the spindle L' is carried on a slide O which is mounted
upon the base of the machine and reciprocated horizontally by a screw P operated
by belt driven pulleys P' P2. A sliding feather key is fitted to the screw P, and
the circular motion of the driving pulley is thus transmitted to the screw causing
the reciprocation of the slide O.
We
We preferably drive the screw of the slide by arranging the said belt pulleys P¹ P²
loosely upon the shaft and running them in opposite directions by open and crossed
belts, the required pulley being connected with the shaft at the proper time by a
friction clutch arranged between the pulleys as illustrated at Figure 10.
preferably arrange for the automatic regulation of the travel of the slide O in each
direction with the suitably disposed stop pieces such as Q Q' in connection with
the clutch sleeve R by the bar or handle S.
The operation of swaging is as follows,-
The machine is set in motion and kept continuously running. The wire is then
gauged to an adjustable bar or stop R for length and gripped in the revolving
chuck L. In swaging double butted spokes for which this machine is principally
employed the total pressure to ensure the correct gauge in the swaged portion is
Dow put on by the wedge and lever arrangement hereinbefore described, and the
automatic traverse is set in motion by means of the starting handle S. The traverse
motion is continued to the required limit when it stops automatically and the
swaging pressure is relieved, and the finished spoke released and removed from the
chuck. The slide is theu returned to the starting position to receive a
fresh wire.
We preferably drive the shaft A at a speed of about four thousand revolutions
per minute, the pulley M at about four hundred revolutions, and pulleys P1 P2 at
about eighty and two hundred and forty revolutions per minute respectively but
we vary such speeds to suit the particular work required. We circulate a
continuous stream of water or liquid around the bearings of the high speed
shaft A.
Having now particularly described and ascertained the nature of our said inven-
tion, and in what manner the same is to be performed, we declare that what we
claim is;~
1. A machine for the swaging of cycle wheel spokes and for other like wires or
bars, constructed and arranged substantially as described.
2. In cycle wheel spokes and like swaging machines the combination of a high
speed eccentric shaft A directly operating a die or swaging tool such as C, with
a revolving chuck as L, substantially as and for the purposes described and as
illustrated.
3. The combination and arrangement in a swaging machine of the dies or swaging
tools such as C and G with means for reciprocating the upper tool C, substantially
as described and as illustrated.
4. The combination and arrangement in a swaging machine of the chuck L, with
driving mechanism substantially as described and as illustrated.
5. The improved means for adjusting the lower die or tool of a swaging machine
substantially as described and as illustrated.

page_text: 6. In a swaging or like machine the improved means for reciprocating the slide O
constructed and arranged substantially as and for the purposes described and as
illustrated.
Dated this 12th day of February 1897.
MARKS & CLERK,
18 Southampton Buildings, London, W.C., and
13 Temple Street, Birmingham, Agents for the Applicants.