Improvements in Motor Cars.
Year: 1899

page_text: PROVISIONAL SPECIFICATION.
Improvements in Motor Cars.
I, GOTTLIEB DAIMLER, of Cannstadt, in the Kingdom of Würtemberg, in the
German Empire, Engineer, do hereby declare the nature of this invention to
be as follows;
This invention relates to improvements in motor cars and has for its object
a mechanism for setting in motion the driving wheels of a. motor car. The chief
feature of my invention is, that one mechanism is sufficient to give motion to both
wheels and that the wheels of a car constructed according to my invention can
have the necessary inclination or splay.
Hitherto the splaying of the wheels was only possible by the arrangement of
two mechanisms, each wheel receiving motion from a different impelling
mechanism. In my invention I employ a fore shaft divided in two halves which
are in connection with the main driving shaft by means of bevel gear. Thereby
it is possible to give any desired inclination to the two parts of the fore shaft
and the impulsion of the wheels is rendered easy even if they have a certain
dish.
My invention will be more fully understood with reference to the accompanying
drawing, in which:
Figure 1 illustrates a vertical section through the driving shaft and impelling
mechanism,
Figure 2 illustrates a horizontal section through the same.
The main driving shaft is provided with cross bolts ₁. Upon these bolts
bevel wheels care mounted loosely. These bevel wheels engage with
bevel wheels, thereby forming the mechanism for turning round the
vehicle. A third pair of bevel-wheels e¹ e are symmetrically disposed and rigidly
connected to the bevel wheels d. The whole mechanism is enclosed within a
casing rotating loosely round the driving shaft a.
The bevel wheels ele engage with bevel wheels f f partly enclosing the bevel
wheels and keyed upon each half g and g of the fore shaft. Owing to this
arrangement the rotation of the driving shaft a has for consequence that each
half of the fore shaft turns in the same direction, thereby setting in motion
the wheels A A. The rotation of the parts y g of the fore shaft is transmitted
to the relative wheels by means of pinions which gear with cog-wheels k
attached to the wheels À A.
The two parts of the fore shaft are suitably carried by stiff arms rigidly
connected to the axle of the driving wheels A A. The prolongations m¹ m² of
the arms are elastic and linked to the body of the car..
It is quite evident, that the diameter of the toothed wheels forming the gearing
which I use to give motion to the wheels is less than the diameter of the one pair
of toothed wheels employed up to now for this purpose.
As already mentioned the chief feature of my invention is that both parts g¹ y²

page_text: of the fore shaft can be inclined to the sides as the bevel wheels f¹ f2 keyed to
the fore shaft will constantly gear together with the bevel wheels et e².
The whole mechanism is suitably surrounded by a frame n rigidly connected
to the axle of the driving wheels A A.. Owing to the rigid connection of the
arms and of the frame n to the axle of the wheels A A, a parallel position a
of the fore shaft to the axle and an exact gearing together of the bevel wheels
is guaranteed.
1, GOTTLIEB DAIMLER, of Cannstatt, in the Kingdom of Wurttemberg, in the
German Empire, 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 :-
The chief
This invention relates to improvements in motor cars and has for its object
a mechanism for setting in motion the driving wheels of a motor car.
feature of my invention is, that one mechanism is sufficient to give motion to both
wheels and that the wheels of a car constructed according to my invention can
have the necessary inclination or splay.
Hitherto the splaying of the wheels was only possible by the arrangement of
two mechanisms, each wheel receiving motion from a different impelling
mechanism. In my invention I employ a fore shaft divided in two halves which
are in connection with the main driving shaft by means of bevel gear. Thereby
it is possible to give any desired inclination to the two parts of the fore shaft
and the impulsion of the wheels is rendered easy even if they have a certain
dish.
My invention will be more fully understood with reference to the drawings
filed with Provisional application, in which:
Figure 1 illustrates a vertical section through the driving shaft and impelling
méchanism,
Figure 2 illustrates a horizontal section through the same.
The main driving shaft a. is provided with cross bolts 61 62. Upon these bolts
bevel wheels are mounted loosely. These bevel wheels c¹ 2 engage with bevel
wheels, thereby forming differntial gear to permit the turning round of the
vehicle. A third pair of bevel-wheels ce are symmetrically disposed and rigidly
connected to the bevel wheels. The whole mechanism is enclosed within a
easing rotating loosely round the driving shaft a.
The bevel wheels el c² engage with bevel wheels f f partly enclosing the bevel
wheels and keyed upon each half g and g² of the fore shaft. Owing to this
arrangement the rotation of the driving shaft a has for consequence that each
half g g of the fore shaft turns in the same direction, thereby setting in motion
the wheels A A. The rotation of the parts g g of the fore shaft is transmitted
to the relative wheels by means of pinions which gear with cog-wheels k¹ k
attached to the wheels A A.
The two parts g g of the fore shaft are suitably carried by stiff arms rigidly
connected to the axle of the driving wheels A A. The prolongations m² m² of
the arms are elastic and linked to the body of the car.

page_text: It is quite evident, that the diameter of the toothed wheels forming the gearing
which I use to give motion to the wheels is less than the diameter of the one pair
of toothed wheels employed up to now for this purpose.
As already mentioned the chief feature of my invention is that both parts g¹ g²
of the fore shaft can be inclined to the sides as the bével wheels fi f² keyed to
the fore shaft will constantly gear together with the bevel wheels e¹ e.
The whole mechanism is suitably surrounded by a frame rigidly connected
to the axle of the driving wheels A A. Owing to the rigid connection of the
arms and of the frame n to the axle of the wheels A A, a parallel position
of the fore shaft to the axle and an exact gearing together of the bevel wheels
is guaranteed.
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:-
1. In motor cars the combination of the main driving shaft with a bevel wheel
gearing in connection with the car wheels, said gearing also forming differential
gear to permit the turning round of the vehicle and acting simultaneously as
impelling mechanism, substantially and for the purpose as described.
2. An impelling mechanism for motor car wheels, substantially as described
and illustrated in the drawings.
Dated this 4th day of January 1900.
BOULT, WADE & KILBURN.
Agents for the Applicant.