Improvements in and relating to Driving Mechanism for Motorcars.
Year: 1899

page_text: Date of Application, 6th Oct., 1899
Complete Specification Left. 18th Apr. 1900-Accepted, 6th Oct., 1900
PROVISIONAL SPECIFICATION.
Improvements in and relating to Driving Mechanism for Motorcars.
I, FRITZ HENRIOD-SCHWEIZER, of Marin, near Neuchatel, in the Republic of
Switzerland, Manufacturer, do hereby declare the nature of this invention to be
as follows:-
This invention relates to an improved device or apparatus intended to transmit
rotation from any motor to the usual differential gear acting upon the driving
shaft of a motor-car of any construction, the said device being intended to cause
the car to move with varying speed, whilst the motorshaft is rotating continu-
eusly in one direction, a device being provided to allow this direction of rotation
to be reversed. The whole mechanism is contained within a closed box which
may be partially filled with oil or other lubricating material.
In a perfectly closed box two shafts are arranged in parallel position to each
other. The motorshaft rotates with constant speed. The shaft of the usual dif-
ferential gear is intended to bear suitable chain-wheels intended to drive corre-
On the motorshaft is fixed a
sponding chain-wheels fixed to the driving wheels.
bevil gear engaging with two other bevil wheels loosely placed upon one of the
two above mentioned shafts. A double coupling-box is arranged on this shaft
so as to rotate with the same but capable of sliding thereon. A coupling lever
engaging the coupling-box is retained in its normal position by means of a spring
in which position two of the bevil wheels are in gear. The coupling shaft further
carries loose wheels which engage in corresponding wheels which are keyed on the
second of the before mentioned shafts of the differential gear.
Two further coupling-boxes are fixed upon the coupling shaft and connected
with same by Key and groove so as to alternately impart rotation through one of
the wheels to the second shaft with the object of driving the same with difference
of speed. The gear of the coupling-boxes is effected by means of levers which
are fulcrumed on the case or box and provided with vertical projections. Upon a
central vertical shaft there is arranged in the interior of the box a rocking lever
1ocking in a horizontal direction and provided at its two extremities with suitable
slots of peculiar shape in which engage the projections of the above mentioned
Jevers.
The slots are of such a shape that the rocking lever being properly rocked the
coupling-boxes cause the engagement or disengagement of their respective wheels.
A nose is fixed on the extremity of the rocking lever and is intended to act upon
a lever which acts upon the first mentioned coupling-box with a view of putting
the bevil wheels in and out of gear to cause the car-wheels to be moved either
backward or forward.
This action of the nose is obtained by the engagement of a projection with that
portion of the slot which causes the first coupling-box to engage with the wheel
imparting to the driving wheels the minimum speed.
By means of a to and fro rotation of the vertical shaft the forward and back-
ward movement of the car as well as the change of the speed of the same is
caused.
The box may be supplied with oil or other lubricant so as to have the rofat-

page_text: ing parts of the mechanism continuously submerged in oil and hence well
Jubricated.
Dated this fith day of October 1800
HASELTINE, LAKE & Co.,
45, Southampton Buildings, London, W.C., Agents for the Applicant.
Improvements in and relating to Driving Mechanism for Motorcars.
I, FRITZ HENRIOD-SCHWEIZER, of Marin, near Neuchatel, in the Republic of
Switzerland, Manufacturer, do hereby declare the nature of this invention and in
what manner the same is to be performed, to be particularly described and ascer-
tained in and by the following statement:-
This invention relates to an improved device or apparatus intended to transmit
rotation from any motor to the usual differential gear acting upon the driving
shaft of a motor-car of suitable construction, the said device being intended to
cause the car to move with varying speed, whilst the motor shaft is rotating con-
tinuously in one direction, and a device to allow this direction of rotation to be
reversed. The whole mechanism is contained within a closed box which may be
partially filled with oil or other lubricating material.
The accompanying drawing shows by way of example one form of execution of
the invention.
Figure 1 shows a horizontal section, and
Figure 2 a vertical section of the machine.
Figure 3 illustrates the manner in which the usual steering-lever of the car
may be connected with the invention.
Figure 4 illustrates the differential gear connecting the tubular shaft 3 (which
bears wheels 18, 19, 20 and 21) with the two shafts 31 and 3" each of which may
be connected directly or indirectly to the car wheels.
1 is a perfectly closed box in which two shafts 2 and 3 are located in parallel
position to each other. 4 is the motor shaft rotating with constant speed.
On the motor shaft is fixed a bevel gear 7 engaging with two other bevel
wheels 8 and 9 loosely placed upon the shaft 2. A double claw-coupling 10 is
arranged on this shaft 2 in such a manner as to rotate with the same and also
be capable of sliding thereon.
A coupling lever 11, fulcrumed at 12, and engaging the claw coupling 10 is
retained in its normal position by means of a spring 13, in which position the
shaft 2 is driven by the shaft 4 by means of the bevel wheels 7 and 9, and the
coupling 10. Shaft 2 further carries loose wheels 14, 15, 16, and 17 which
engage in corresponding wheels 18, 19, 20, and 21 respectively.
Two further claw-couplings 22 and 23 are fixed upon the shaft 2 and connected
with same by a key and groove so as to alternately impart rotation through one
of the wheels 14, 15, 16 and 17 to one of the wheels 18, 19, 20, and 21 keyed
upon the shaft 3 with a view of driving the same at different speeds. As shown
in Figure 4, the shaft 3 bearing the wheels 18, 19, 20 and 21 is tubular and it
is formed of two portions the enlarged ends of which are fixed to one another by
means of suitable screw-bolts and form the box 6 which contains the well-known
differential gear connecting the axles 31 and 3 in such a way with one another
that the same are liable to rotate with different speeds with the respective car-
wheels they are bearing or to which they may be connected by means of any suit-
able transmission whatever.
The said differential gear is composed on the one hand of two bevel-wheels 85

page_text: and 36 the shafts of which are formed upon the sleeve 37 and engage their ends
in the periphery of the said box 6.
In the said sleeve 37 are engaged the inner ends of the two axles 3 and 31.
These inner ends of the axles 31 and 31 bear each a bevel-wheel 38 and 39 respec-
tively keyed to the said axles 31 and 3 respectively.
Now if the tubular shaft 3 is rotated at any speed whatever (either by means
of the wheels 14-18 or by 15-19 etc.) the rotation of the box 6 will be imparted
by the bevel-wheels 35 and 36 to the said bevel-wheels 38 and 39 in such a manner
that either the axle 31 may retard in its rotation with regard to the axle 31 or
inverse as this may occur because of the resistance opposed to the one or other
of the car-wheels by the street upon which it is rolling.
The gearing of the claw-couplings 22 and 23 is effected by means of a lever 24
or 25 fulcrumed at 26 or 27 respectively, and provided with vertical projec-
tions 28 or 29.
Upon a central vertical shaft 30 is arranged in the interior of the box 1 a rock-
ing lever 31 rocking in a horizontal plane and provided at its two extremities
with suitable slots 32 and 33, of peculiar shape, in which engage the projec-
tions 28 and 29 of the above mentioned levers 24 and 25.
The slots 32 and 33 are of such a shape that the rocking lever 31 being pro-
perly rocked by means of the shaft 30, the claw couplings 22 and 23 cause the
engagement or disengagement of their respective wheels 18 or 19, or of the
wheels 20 and 21 respectively.
34 is a nose fixed on the extremity of the rocking lever 31 and intended to act
upon the lever 11 which acts upon the claw-coupling 10 with a view of putting
the bevel wheel 9 out of gear and the bevel wheel 8 in gear, thus causing the car-
wheels to be moved either backward or forward.
This action of the nose 34 is obtained at the same time as the engagement of a
projection 28 with that portion of the slot 32 which causes the first claw-
coupling 22 to engage with the wheel 14 imparting to the driving wheels the
minimum speed.
By means of a to- and fro- rotation of the vertical shaft 30, forward and back-
ward movement of the car, as well as change of speed of the same may be
effected.
The box I may be supplied with oil or other lubricant so as to have the rotat-
ing parts of the mechanism continuously submerged with oil and hence well
lubricated.
Having now particularly described and ascertained the nature of my said
invention, and in what manner the same is to be performed, I declare that what
I claim is:
An improved device or apparatus intended to transmit the rotation of the motor
to the driving-wheels of motor-cars, characterized by the combination of a rock-
ing lever 31 provided with suitable slots 32 and 33 and with a nose 34, the said
lever being pivotally connected with the projections 28 and 29 respectively of the
coupling-levers 24 and 25, which engage the said slots, the said levers 24 and 25
being intended to engage or disengage suitable couplings acting upon the loose
wheels 18 19, 20 and 21, the said nose 34 being combined with a lever 11
intended to disengage a coupling 10 acting upon the bevel wheel 9 and to engage
the same with the bevel wheel S, with a view of obtaining with a positive and
constant rotation of the motor shaft different speed or the backward movement of
the motor car, substantially as described and illustrated in the accompanying
drawings.
HASELTINE, LAKE & Co.,
45, Southampton Buildings, London, W.C., Agents for the Applicant.