Improvements in Starting Devices for Common Road Motor Vehicles.
Year: 1898

page_text: PROVISIONAL SPECIFICATION.
Improvements in Starting Devices for Common Road Motor Vehicles.
We, WILLIAM SIMPSON, of 8, Minshull Street, Manchester, Cotton Manufacturer,
WALTER LIGHT BODMAN, of Village View, Burnage Lane, Didsbury, Manchester,
Carriage Builder, and DANIEL HARRISON SIMPSON, of One Oak, Cheadle, Hulme,
in the County of Chester, Engineer, do hereby declare the nature of our said
invention to be as follows:-
_
Upon a shaft geared up to the wheels of the vehicle or upon the crank shaft of
the engine driving such wheels we mount large ratchet or like wheel, and adjacent
thereto we mount a ratchet bar adapted under alternate impulses imparted by
hand or other power to engage with the said wheel, advance it step-by-step, and
thus serve for starting or manoeuvring the vehicle, or assisting the engine crank
over its dead centres.
To prevent the wheel running back we provide a pawl or detent and, by prefer-
ence in such relation to the ratchet bar as to be held out of play by such bar
when the bar is not in use, and under the pull of a spring, or weight, auto-
matically engage with the wheel when the ratchet bar makes its forward stroke.
By duplicating the arrangement we may provide for starting the vehicle either
forwards or backwards.
In some applications the ratchet bar may act upon the ratchet wheel through
a fever and the wheel be directly mounted on the vehicle wheel or its axle.
Dated this 22nd day of October 1898
WILLIAM SIMPSON,
WALTER LIGHT BODMAN,
DANIEL HARRISON SIMPSON,
By John G. Wilson & Co.,
Agents.
Improvements in Starting Devices for Common Road Motor Vehicles.
We, WILLIAM SIMPSON, of 8, Minshull Street, Manchester, Cotton Manufacturer,
WALTER LIGHT BODMAN, of Village View, Burnage Lane, Didsbury, Manchester,
Carriage Builder, and DANIEL HARRISON SIMPSON, One Oak, Cheadle, Hulme,
in the County of Chester, Engineer, do hereby declare the nature of this inven-
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 has for its object to provide for the ready restarting or
manoeuvring of motor vehicles and consists in the application of a large ratchet
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page_text: or like wheel to a shaft or axle geared up to the vehicle wheels, or upon the crank
shaft of the engine driving such wheels, also of a ratchet or ratchet bar mounted in
proximity to such wheel, and by hand or other power adapted to engage with the
ratchet wheel and advance it tooth-by-tooth.
The accompanying drawings illustrate the application of our invention in
which Fig. 1 is a side view, and Fig. 2 a plan. Fig. 3 illustrates a modification.
Upon a shaft (A) which may be the engine crank shaft, or a shaft geared to
the wheels of the vehicle we mount a ratchet wheel (B) which is keyed or other-
wise fastened on to such shaft and when rotated drives the shaft. Above, or
tangentially disposed in retation to such wheel is a ratchet bar (C) which at one
extremity is coupled or linked to a hand lever (D) and at its other extremity
carries, or is formed with a hook or ratchet (E) adapted when moved to and fro
horizontally to engage with the teeth of the ratchet wheel and thus rotate the
wheel, its shaft and the vehicle wheels. The said bar is by preference supported
by a bracket (F). To prevent the wheel running back we provide a pawl or
detent (G) with extension (G) and mount such pawl upon a stud (H) directly
opposite the end of the ratchet bar and the edge of the wheel so that under the
pull of a spring (I) acting on the bracket (F) and extension (G) the pawl will
lie in gear with the teeth of the ratchet wheel, and so prevent the wheel running
back whilst the bar makes its return stroke or such pawl bar is pushed to its
furthermost point backwards will be automatically pushed out of gear with the
wheel either to allow the ratchet wheel to run backwards when required or to
prevent the pawl making a noise in slipping over the teeth. The extreme position
of the lever (D) in operating the wheel (1) are shewn by dotted lines, and the
positions of such lever for holding the pawl out of gear is shewn in full lines.
By employing two ratchet wheels with teeth set in opposite directions and the
ratchet set in opposite directions the vehicle may be started to run either back-
wards or forwards. In some cases we may operate the ratchet through a lever
as shewn in Fig. 3.
In practice we have found the foregoing arrangement of ratchet and ratchet bar
extremely useful for starting a motor vehicle when say one or both of the gear
wheels is or are in a rut or for rotating the engine cranks when on a dead centre.
Having now particularly discribed and ascertained the nature of our said
invention and in what manner the same is to be performed we declare that what
we claim is:
1: In starting gear for common road vehicles, a ratchet wheel mounted upon
a shaft geared with the vehicle wheels or upon the engine a motor crank shaft,
and a ratchet or ratchet bar adapted to engage with said ratchet wheel under to-
and-fro impulses & rotate the wheel, and a pawl or detent and spring for prevent-
ing the running back of the wheel, mounted and operating substantially as herein
set forth.
WILLIAM SIMPSON,
WALTER LIGHT BODMAN,
DANIEL HARRISON SIMPSON,
By John G. Wilson & Co.,
Agents.