Year: 1890

page_text: Date of Application, 24th June, 1890-Accepted, 26th July, 1890
I have found in gearing an electric motor to the driving axle of a motor driven
car, that rigid gearing is objectionable, and that the car will often remain standing with
a moderately heavy load owing to the fact that there is rigid gearing between the
shaft of the motor and the driven axle, whereas the power exerted would be sufficient
to propel the car if once started.
I have also found that by placing one or more elastic gears in the train, the car
can be more easily started and the liability of breaking the teeth of the gear averted
to a certain extent.
Referring to Fig. 1, A is the motor mounted in any suitable manner on the car
frame; a, is the motor shaft having a pinion b, meshing with a gear wheel d, on an
intermediate shaft D. At the opposite end of this shaft is a pinion d, gearing into
a built-up gear wheel E, on the axle G, of the car. My present invention relates
particularly to the built-up gear wheel E.
I prefer to make the teeth of the gear wheel E, and the pinion b, of phosphor-
bronze, and I make the pinion d', of steel, and the gear wheel d, I provide with
wooden teeth, as I find this combination preferable in gearing used on this class of
work.
The body or centre of the gear wheel E, is made of two sections F, F, spanning
the axle G, one of said sections having a key-seat to which is adapted the key for
securing the wheel to the shaft. Each of these sections is cut away at f, to allow of
the true fitting of the bearing surfaces e. Bolts, pass through the spokes g, of
each section, firmly securing the two sections together.
The centre of the wheel may be made up of mere than two sections, if required,
depending altogether upon the diameter of the wheel.
I, is a ring snugly fitting over the centre composed of two sections F, F, said ring
having a flange i, through which pass the transverse securing bolts k, by which the
ring is fastened to the centre. The ring is also secured to the flange g', of each
section by radial screw bolts, which are tapped into the ring as shown in Figs. 2
and 3. The ring I, is provided with gear teeth i', and this ring and its teeth are
preferably made of phosphor-bronze.
By the above construction I am enabled to provide a wheel which is especially
applicable to gearing for motors, and by making the wheel in sections as shown, it
can be readily removed from its shaft, repaired and replaced without dismantling the
other parts of the driving mechanism.

page_text: The ring can be readily removed from the centre and replaced or repaired without
removing the centre from the shaft.
Having now particularly described and ascertained the nature of my said inven-
tion, and in what manner the same is to be performed, I declare that what I
claim is:-
1. The combination in a built-up gear wheel of the sections F, F, having abutting
bearing surfaces e, bolts h, passing through the spokes 9, of each section whereby the
sections are secured together, a ring I, provided with gear teeth, with radial bolts
passing through the flange of each section and into the ring, substantially as herein-
before described.
2. The combination of the sections F, F, forming the centre of a gear wheel,
bolts h, passing through the spokes g, of each section, a flanged ring 1, provided with
gear teeth, transverse bolts k, passing through the flange i, of the ring, and the
Hange g', of each section, and radial bolts 7, passing through the flange y', and into
the ring 1, substantially as herein before described.
Dated this 20th day of June 1890.
DAY, DAVIES & HUNT,
321, High Holborn, London, W.C., Agents for the Applicant.

page_text: Date of Application, 24th June, 1890-Accepted, 26th July, 1890
Fig. 6, is a sectional view on the line 5-6, Fig. 2.
car,
I have found in gearing an electric motor to the driving axle of a motor driven
that rigid gearing is objectionable, and that the car will often remain standing with
a moderately heavy load owing to the fact that there is rigid gearing between the
shaft of the motor and the driven axle, whereas the power exertod would be sufficient
to propel the car if once started.
I have also found that by placing one or more elastic gears in the train, the car
can be more easily started and the liability of breaking the teeth of the gear averted
to a certain extent.
Referring to Fig. 1, A is the motor mounted in any suitable manner on the car
frame; a, is the motor shaft having a pinion b, meshing with a gear wheel d, on an
intermediate shaft D. At the opposite end of this shaft is a pinion d', gearing into
a built-up gear wheel E, on the axle G, of the car. My present invention relates
particularly to the built-up gear wheel E.
I prefer to make the teeth of the gear wheel E, and the pinion b, of phosphor-
bronze, and I make the pinion d', of steel, and the gear wheel d, I provide with
wooden teeth, as I find this combination preferable in gearing used on this class of
work.
The body or centre of the gear wheel E, is made of two sections F, F', spanning
the axle G, one of said sections having a key-seat to which is adapted the key for
securing the wheel to the shaft. Each of these sections is cut away at /, to allow of
the true fitting of the bearing surfaces e. Bolts, pass through the spokes 9, of
cach section, firinly securing the two sections together.
The centre of the wheel may be made up of more than two sections, if required,
depending altogether upon the diameter of the wheel.
I, is a ring snugly fitting over the centre composed of two sections F, F', said ring
having a flange i, through which pass the transverse securing bolts k, by which the
ring is fastened to the centre. The ring is also secured to the flange g, of each
section by radial screw bolts, which are tapped into the ring as shown in Figs. 2
and 3. The ring I, is provided with gear teeth i', and this ring and its teeth are
preferably made of phosphor-bronze.
By the above construction I am enabled to provide a wheel which is especially
applicable to gearing for motors, and by making the wheel in sections as shown, it
can be readily removed from its shaft, repaired and replaced without dismantling the
other parts of the driving mechanism.

page_text: The ring can be readily removed from the centre and replaced or repaired without
removing the centre from the shaft.
Having now particularly described and ascertained the nature of my said inven-
tion, and in what manner the same is to be performed,
claim is :-
declare that what I
1. The combination in a built-up gear wheel of the sections F, F', having abutting
bearing surfaces e, bolts, passing through the spokes g, of each section whereby the
sections are secured together, a ring 1, provided with gear teeth, with radial bolts
passing through the flange of each section and into the ring, substantially as herein-
before described.
2. The combination of the sections F, F, forming the centre of a gear wheel,
bolts h, passing through the spokes g, of each section, a flanged ring I, provided with
gear teeth, transverse bolts k, passing through the flange i, of the ring, and the
flange g, of each section, and radial bolts, passing through the flange g', and into
the ring 1, substantially as herein before described.
Dated this 20th day of June 1890.
DAY, DAVIES & HUNT,
321, High Holborn, London, W.C., Agents for the Applicant.