Improvements in Machinery or Apparatus for Transmitting Motion from Electric Motors to other Machinery.
Year: 1896

page_text: Date of Application, 20th Jan., 1896
Complete Specification Left, 19th Oct., 1895-Accepted, 20th Jan., 1897
Improvements in Machinery or Apparatus for Transmitting Motion
from Electric Motors to other Machinery.
1, WILLIAM WILSON HULSE of the Ordsal Works, Salford, Manchester, in
the County of Lancaster, Engineer, do hereby declare the nature of this invention
to be as follows:-
This invention has reference to apparatus for transmitting motion from electric
motors to other machinery, such as machine tools. As the shaft or spindle of an
electric motor runs at somewhat too bigh a speed for driving some machine tools
direct, the speed has to be reduced. before reaching the machine to be driven, and
to effect this reduction of speed I apply spiral, helical or straight toothed gearing
to the, motor shaft and to a subsidiary or countershaft attached to, or placed
conveniently near, the machine; or, the subsidiary, or counter shaft may be driven
by means of ropes, or chains mounted upon pulleys on the motor shaft and on the
subsidiary or counter shaft.
Now in order..that machines, such as lathes, may be driven at different speeds
without changing the speed of the motor, according to one arrangement I provide
upon the subsidiary or countershaft a driving pinion of considerable width and
upon the lathe spindle, or face plate pinion shaft, a succession of toothed wheels of
different. diameters geared and ungeared. from, the driving pinion by an inter-
mediate wheel, which is always in gear with it, being made to move radially in a
quadrant slide struck from the centre of the driving pinion and carried by a slide
which can be moved longitudinally by means of say a screw or a rack and pinion,
from one diameter of toothed wheel to another so as to embrace each of the
several wheels, or be free from, all. The movements, of the intermediate wheel
may be longitudinal and transverse instead of longitudinal and radial. In some
cases a straight slide may be employed instead of a quadrant slide. The driving
pinion and the toothed wheels of different diameters may be loosely mounted
respectively on the subsidiary shaft and the lathe spindle or the face plate pinion
shaft which may be provided with the usual spur gearing.
The arrangements for varying the speed may be modified to suit the requirements
of the particular case.
In some cases the ordinary cone pulley of the machine tools is retained, when
the electric motor can be used at times, and the ordinary steam engine at other
times.
When ropes, or chains are employed tension pulleys and balance weights may be
desirable.
In some cases it may be convenient to group several machine tools together to
be driven from one motor geared as before, described each machine being driven
from its respective countershaft.
In the case of feed or quick traverse motions of machine tools, the same motor
or another motor or motors may be employed to effect the feed, such motor or

page_text: motors being set in motion at the proper time automatically by the machine
itself.
Dated this 20th day of January 1896.
For the Applicant,
W. LLOYD WISE,
46 Lincoln's Inn Fields, London, W.C., Chartered Patent Agent.
Improvements in Machinery or Apparatus for Transmitting Motion
from Electric Motors to other Machinery.
I, WILLIAM WILSON HULSE, of the Ordsal Works, Salford, Manchester, in
the County of Lancaster, Engineer, 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 has reference to apparatus for transmitting motion from electric
motors to other machinery, such as machine tools. As the shaft or spindle of an
electric motor usually runs at too high a speed for driving some machine tools
direct, the speed has to be reduced before reaching the machine to be driven, and
to effect this reduction of speed I apply spiral, belical or straight toothed gearing
to the motor shaft and to a subsidiary or countershaft mounted on or placed
conveniently near the machine; or the subsidiary or countershaft may be driven
by means of ropes, or chains mounted upon pulleys on the motor shaft and on the
subsidiary or countershaft.
Now in order that machines, such as lathes, may be driven at different speeds
without changing the speed of the motor, according to one arrangement I provide
upon the subsidiary or countershaft, a driving pinion of considerable width and
upon the lathe spindle or face plate pinion shaft, a succession of toothed wheels of
different diameters geared and ungeared from the driving pinion by an inter-
mediate wheel, which is always in gear with it, being made to move radially in a
quadrant slide struck from the centre of the driving pinion and carried by a slide
which can be moved longitudinally by 'means of say a screw, or a rack and pinion
from a toothed wheel of one diameter to a toothed wheel of a different diameter
so that it can be caused to gear with any one of the several wheels, or be free
from all of them. The movements of the intermediate wheel may be longitudinal
and transverse instead of longitudinal and radial. In this case a straight slide
may be employed instead of a quadrant slide. The driving pinion and the toothed
wheels of different diameters may be loosely mounted respectively on the subsidiary
shaft and the lathe spindle or the face plate pinion shaft which may be provided
with the usual spur gearing.
In the accompanying drawings Fig. 1 is an end elevation, Fig. 2 a sectional
plan, and Fig. 3 a side elevation, showing so much of a lathe as is necessary to
illustrate the application thereto of driving mechanism of the kind above
referred to.
1 is an electric motor the armature shaft 2 of which has keyed thereon a worm 3
in gear with a corresponding worm wheel 4 running loose upon a subsidiary or
countershaft 5 that also serves as the ordinary 2nd motion shaft of the lathe head
stock. In lieu of a worm and worm wheel, a pinion and wheel having helical
teeth may be employed. Connected with the wheel 4 is a pinion 6 of considerable
width, the countershaft being mounted in suitable bearings 7, 8, 8, 8, 8° are
toothed wheels of different diameters fixed upon the tubular shaft 9 within which
is the shaft 9 carrying the pinion 10 for driving the face plate 11 of the lathe as

page_text: well understood. 12 is an intermediate wheel carried by a shaft 13 mounted to
work in curved slots 14 formed in a quadrant or bracket 15 that extends from a
slide 16 adapted to be moved longitudinally on a slide bed 17 by a screw 18. The
shaft 13 has fixed to it a pinion 19 gearing with a fixed segmental rack 20 on the
bracket 15, for adjusting the position of the said shaft and wheel, and also with a
tightening up nut 13" for fixing the said shaft in its adjusted position. As will be
seen the arrangement is such that the intermediate wheel 12 can be moved radially
about the centre of the countershaft 5 and pinion 6 and also endways, so that it
can be placed in gear with any one of the wheels 8, 8, 8, 8° to suit the speed
required, or be put out of gear with these wheels. 21, 22 and 23 are additional
toothed wheels keyed to the countershaft 5 and adapted to be placed in gear
respectively with corresponding toothed wheels 21°, 22" that are keyed on the tubular
shaft 9 and a toothed wheel 23" keyed on the face plate pinion shaft 9, for which
purpose the wheels 21, 22 and 23 are made longitudinally adjustable on their
shafts. The tubular shaft 9" can run loose on the shaft 9 and has keyed to it a
disc 96 by which it can be connected to the toothed wheel 23" and thus with the
shaft 9. By the arrangement described, the lathe can be run with single gearing,
or with treble gearing, of which two sets are provided. When running with single
gearing, the shafts 9, 9" are connected through the disc 9b and toothed wheel 23ª
and motion is transmitted through the stepped wheels to pinion 10 and face
plate 11. When running with treble gearing the shafts 9 9 are disconnected and
motion is transmitted through the stepped wheels either through the wheels 21° 21
or 22 22 to the shaft 5 and thence by wheels 23, 23" shaft 9 and pinion 10 to the
face plate 11.
The arrangements for varying the speed may be modified to suit the requirements
of the particular case.
Figs. 4, 5 and 6 are similar views to Figs. 1, 2 and 3 respectively showing a
modified arrangement in which the intermediate wheel 12 is adapted to be moved
end ways upon its shaft 13 and is driven from a toothed wheel 6" on the counter-
shaft 5 through a toothed wheel 6° fixed on the shaft 13 which is mounted in
arms 15° capable of being adjusted radially about the countershaft aud toothed
wheel 6ª for the purpose of putting the intermediate wheel 12 in or out of gear
with one or other of the toothed wheels 8, 8, 8, 8° as may be required. The
arms 15 may be adjusted by hand or assisted it may be by a screw or rack and
pinion.
When the intermediate wheel 12 is put in and out of gear by longitudinal and
transverse movements, this may be effected by means of two straight slides
arranged at right angles to each other.
Figs. 7, 8 and 9 are similar views to Figs. 1, 2 and 3 respectively, showing an
arrangement of this kind. In this case the countershaft 5 with worm wheel 4 is
carried by a bearing 7 and extends through the longitudinally movable slide 16
which is mounted upon a transversely movable slide 17° to which the bearing 7 is
fixed. The slide 16 carries the intermediate wheel 12 and also a toothed wheel 6ª
which is in gear with the wheel 12 and is connected by a feather and groove
connection with the countershaft 5 so as to be driven therefrom whilst free to be
moved endways thereon by the slide 16. The worm 3 is mounted to slide on and
be driven from the motor shaft 2 and is arranged between jaws or brackets 17° on
the transverse slide 17ª so as to move transversely with this slide and the wheel 4.
The motor I used for driving the machine may be used for producing the quick
traverse motions that may be required. In the example shown, a quick traverse
motion is transmitted from the countershaft 5 through toothed wheels 6ª, 25, 26
shaft 27, bevel gear 28, shaft 29 and bevel gear 30 to the feed shaft 31. Or instead
of using the same motor, a separate motor or motors may be employed to effect the
quick traverse motion.
In some cases the ordinary cone pulley of the machine tools may be retained on
the lathe headstock. In this case the electric motor can be used at one time and
the ordinary steam engine at another time for driving the machine.

page_text: When-ropes or-chains-are-employed for transmitting the motion from the motor
shaft to the subsidiary or countershaft, tension pulleys and balance weights may
"be desirable.
In some cases it may be convenient to group several machine tools together to be
driven from one motor-through a driving shaft common-to all the machines.
Having now particularly described and ascertained the nature of the said inven-
tion and in what manner the same is to be performed I declare that. what I
claim is:-
1. For transmitting motion from an electric motor to another machine, apparatus
comprising a subsidiary or countershaft driven from the driving shaft of the said
electric motor, a series of toothed wheels of different diameters fixed upon a shaft
of the machine to be driven, and an adjustable intermediate toothed wheel arranged
to be driven from the subsidiary or countershaft and capable of being put in or out
of gear with any one of the said toothed wheels of different diameters, substantially
as described for the purpose specified.
2. For transmitting motion from electric motors to machines such as lathes,
apparatus constructed arranged and operating substantially as hereinbefore
described with reference to and shown in Figs. 1, 2 and 3, or modified according to
Figs. 4, 5 and 6; whether or not the quick traverse motion of the machine be effected
from the electric motor used to drive the machine, or from a separate motor.
Dated this 19th day of October 1800.
For the Applicant,
W. LLOYD WISE,
46 Lincoln's Inn Fields, London, W.C., Chartered Patent Agent.