Improvements in and connected with Motor-propelled Vehicles.
Year: 1896

page_text: COMPLETE SPECIFICATION.
Improvements in and connected with Motor-propelled Vehicles.
I, FRIEDRICH LUTZMANN, Locksmith, of Dessan, in the Empire of Germany,
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 :-
This invention relates to improvements in mechanically propelled vehicles the
purpose of which is to effect a secure working of such vehicles and they especially
concern a motor and the corresponding arrangements for the reduction of the fuel
into gas, air cooling, and a differential mechanism.
Figs. 1 and 2 show a vehicle with motor in side view and in plan view
respectively.
Figs. 3, 4, 5, and 6 the motor in sectional and plan views.
Fig. 7 illustrates a modification of the construction of the motor, and
Figs. 8 and 9 and 10, 11 and 12 a differential mechanism in two forms of
construction.
The motor has a working piston a' and a special gas mixture suction piston 61
which move each in a cylinder a and b respectively separated by a wall with con-
rections and which are upon a common piston-rod c, the working piston fixed and
the sucking piston movable. The latter is coupled during the suction period with
the piston-rod and on the end of the compression period it is again disengaged and
this is effected by providing latches d on the suction piston, which latches reach
during the coupling behind a swelling or projection e of the piston-rod, whilst the
disengaging is effected by projections d' which abut upon projections provided at
the other end of the pump cylinder: the latches hereby free the piston-rod and,
as with the movement of the suction piston a spring g leaning against it has been
brought into compression, the suction piston is now moved forwards and presses the
in-sucked gas-mixture through a tube into the space before the working piston,
so that the latter receives gas-mixture for each outstroke.
Fig. 3 shows the position of the pistons shortly before the lighting of the
compressed mixture, the suction piston has moved forwards and has become coupled
with the piston-rod.
As now the working piston moves out, the suction piston is carried with it and
draws through the tube ia gas-mixture from a vaporizer k into the pump cylinder b.
Shortly before the end of this stroke the latches d are loosened by abutting upon
the flange f, the compressed spring 9 moves the piston b forwards, the latter
presses the insucked gas-mixture through the tube h into the working cylinder a
before the piston a', so that the latter on returning can compress this mixture,
whereupon lighting again takes place. The working piston is thus again operated,
the suction piston is carried with it and the above described working is repeated.
The exhaust passes out at 7 to a sound-damper m (Fig. 2).
The motor, shown in Fig. 7, works in the same manner as above described only
here the pump cylinder bis connected to the other end of the working cylinder a.
In the vaporizer k of any known construction an air current drawn in is saturated
with vapour of a liquid producing an explosive mixture able to be fired. In order
to increase the vaporization, previously warmed air is conducted to the vaporizer
and for this purpose air is used which has been employed for the cooling of the
cooling water of the working cylinder by passing through the tubes n, carried
through the jacket of the latter cylinder; these tubes n are enlarged outwards

page_text: funnel-like in the direction of the movement of the carriage and take in air
automatically. These tubes n all end into a common space n', from which the air is
sucked through the tube r into the vaporizer and from the latter with the gases as
explosive mixture into the pump cylinder.
By this arrangement there is obtained an uninterrupted cooling of the cooling-
water during the run of the carriage aud simultaneously a feed of warmed air to
the vaporizer.
A further improvement relates to the differential mechanism which on driving
round curves allows the exterior carriage wheel to move quicker, without having
an unfavourable influence on the gear-chains. On each end of the shaft o (Figs. 1,
2, 8 and 9) is an arm p. p' keyed upon this shaft with pawls q, q' which engage
with the teeth of the ratchet-wheels s, s¹.
The ratchet-wheels are solidly connected with the chain-toothed-wheels t, t
and rest loosely upon the shaft o. When running on curves the exterior carriage-
wheel wo or w will turn more quickly than the interior wheel and consequently also
the corresponding chain-wheel t or with the ratchet-wheel s or s¹ will turn more
quickly, so that the latter overruns the pawl until the vehicle again runs in a
straight direction. The springs u and u' are connected at one end with the pawls
and at the other end with the arms and press the pawls against the ratchet-wheels.
The same effect is obtained with the differential mechanism shown in Figs. 10,
11 and 12. The chain-toothed-wheel v influenced by a spring is provided with one
or more lateral noses v', which catch into a coupling-box provided with similar
noses. When driving on curves the ratchet-wheel will turn quicker than the
coupling-box and the noses pass out of gear. When a straight direction is again
obtained, the noses again operatively engage together.
Having now particularly described and ascertained the nature of this inven-
tion and in what manner the same is to be performed, I declare that what I
claim is :-
In motor-propelled vehicles,
1. A two time gas engine with spring operated pump piston in which the pump
piston, freely movable upon the piston-rud, is coupled during the suction period
with the piston-rod and is disengaged from the latter at the end of the compression
period, whereupon it is moved forwards by a spring compressed during the suction
at the beginning of the compression perio? and presses the mixture, sucked into
the pump cylinder, into the working cylinder.
2. An air-cooling arrangement for the working cylinder, wherein air caught by
means of funnels is conducted by tubes through the jacket of the cylinders and the
therein contained cooling water, which air warmed by such cooling effect is passed
into the vaporizer and is therein used for the formation of the explosive mixture.
3. A differential mechanism for giving an equal chain-tension when running on
curves, having arms or coupling boxes which, provided on the ends of a through
passing shaft, gear loosely arranged ratchet-wheels with chain-wheels thereon by
means of pawls or noses and on swifter running of the exterior carriage-wheel
allow the pawls to slide over the teeth or the noses to move over one another.
Dated this 1st day of June 1896.
HERBERT HADDAN & Co.,
18, Buckingham Street, Strand, London, W.C.,
Agents to the Applicant.