Improvements in and relating to Propelling Gear for Motor Carriages.
Year: 1898

page_text: PROVISIONAL SPECIFICATION.
Improvements in and relating to Propelling Gear for Motor
Carriages.
We, BORIS LOUTZKY, of 49, Französischestrasse, Berlin, W., German Empire,
Managing Director, and THE GESELLSCHAFT FÜR AUTOMOBILWAGENBAU, at the
same place, a company incorporated according to the laws of the Kingdom of
Prussia, do hereby declare the nature of our invention to be as follows:-
-
In starting motor carriages, a mechanism may be employed, which—whether
actuated by hand or with the foot-produces the initial revolutions, until the
explosive motor comes into effective operation; such mechanism being as a rule
somewhat similar to the arrangement adopted in connection with the familiar
drill-ratch.
Arrangements of this description, however, are apt to prove inconvenient when
a backward motion of the vehicle happens to be desirable; for if in such a case the
arresting pawl, which serves to throw the propelling mechanism in (or out of)
gear, should be allowed, either through carelessness or because the releasing
mechanism fails to work properly, to remain locked in the ratchet, the machinery
would be in danger of becoming broken. Now to obviate accidents of this nature
is the object of the present invention.
There is arranged an extension of the rod (or a system of rods) which is operated
from the motor carriage by hand; this extension of link is, accordingly, supposed
to be movable backwards and forwards; by its position, a "pull" is exercised
upon the band and, through it, upon the angle-piece (or lever) which carries the
arresting pawl. The gear wheel is rigidly secured by means of a wedge or
key to the driving wheel axle, while a piece, the head part of which carries a pivot,
is placed revolvable upon the axle. Upon this pivot an angle piece is arranged
to oscillate; and it will be readily understood that, whenever the band is pulled,
the spring which connects the pivots and tends to release the pawl, is stretched, so
that the pawl is brought into engagement with the ratchet-wheel. The further
motion of the extension piece takes round both the ratchet wheel and the wheel
axle. In producing this effect, then, the mechanism thus far described imparts
one sided" motion, differing not at all, in this respect, from similar arrange-
ments already known.
66
Its novelty resides in the fact that it is so constructed that whenever the
vehicle happens to be pushed in the rearward direction, by hand or otherwise,
the pawl moves out of engagement of its own accord an effect which is brought
about through the agency of the arm; for when the axle, wth the ratchet, is
turned backwards (that is to say, in the direction opposite to that of the hands of
a clock), the said ratchet, through the medium of the pawl, will take the piece
round with it in the backward direction, stretching the band as it does so.

page_text: But the moment the said arm meets a stop, the pawl is, by positive action,
impelled to drop out of gear automatically, so that the wheel may freely be
turned in either direction.
11
01
Improvements in and relating to Propelling Gear for Motor
Carriages.
We, BORIS LOUTZKY, of 49, Französischestrasse, Berlin, W., German Empire,
Managing Director, and THE GESELLSCHAFT FÜR AUTOMOBILWAGENBAU, at the
same place, a company incorporated according to the laws of the Kingdom of
Prussia, 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:-
دو
In starting motor carriages, mechanism may be employed which-whether
actuated by hand or with the foot-produces the initial revolutions, until the
"explosion motor comes into effective operation; such mechanism being as a
rule somewhat similar to the arrangement adopted in connection with the familiar
ratchet drill.
Arrangements of this description, however, are apt to prove inconvenient when a
backward motion of the vehicle happens to be desirable; for if in such a case
the arresting pawl, which serves to throw the propelling mechanism in, or out of
gear, should be allowed, either through carelessness, or because the releasing
mechanism fails to work properly-to remain locked in the ratchet, the machinery
would be in danger of becoming broken. Now to obviate accidents of this nature
is the object of the present invention.
The invention is shown in Figs. 1 and 2 of the annexed drawing. Fig 2
being a section through line 2-2 of Fig. 1.
I is an extension of the rod (or system of rods) which is operated from the
motor carriage by hand; this extension or link 7 is, accordingly, supposed to be
movable backwards and forwards; by its operation a "pull is exercised upon
the band and through it, upon the angle piece (or lever) d which carries the
arresting pawl e. n is assumed to be the driving wheel axle, whereon the gear
wheel is rigidly secured by means of a wedge or key to the driving wheel axle,
while a piece c, the head part of which carries a pivot, is placed upon a revolvably
upon the axle. Upon this pivot an angle piece d is arranged to oscillate; and it
will be readily understood that, whenever the band f is pulled, the spring
connects the studs and i and tends to release the pawl is stretched, so that the
I which
pawle is brought into engagement with the ratchet wheel.
The further motion of the extension piece takes round both the ratchet wheel
and the wheel axle a. In producing this effect, the mechanism thus far described
imparts one sided" motion, not differing in this respect, from similar arrange-
ments already known.
66
Its novelty resides in the fact that the device is so constructed that whenever
the vehicle happens to be pushed in the rearward direction, by handle or otherwise
the pawl moves out of engagement of its own accord; an effect which is brought
about through the agency of the arm . When the axle a with the ratchet bis
turned backwards (that is to say, as assumed in the drawings) in the direction

page_text: opposite to that of the hand of a clock, the said ratchet through the medium of the
pawl e will take the piece d round with it in the backward direction, stretching
the band f as it does so. But the moment the said arm i meets a stop k which is
rigidly secured to the rod the pawl is, by positive action, impelled to drop out of
gear automatically, so that the wheel may freely be turned in either direction.
Having now particularly described 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:-
The improvements in and relating to the propelling gear for motor carriages
acting through the medium of a ratchet wheel and arresting pawl or its equivalent
so that by means of an extension connected with the pawl or equivalent and
movable therewith and of a stop rigidly secured to the operating lever, the pawl,
or its equivalent, is positively released whenever the vehicle is moved backwards
so that the wheel becomes readily controllable in either direction substantially as
described and shewn.
WM. BROOKES & SON,
55 and 56, Chancery Lane, London, Agents for the Applicants.