Improved Mechanism for Raising and Lowering the Toothed Driving Gear of Locomotive Engines for Rack Railways and Tramways.
Year: 1889

page_text: Date of Application, 29th July, 1889
Complete Specification Left, 23rd Apr., 1890-Accepted, 24th May, 1890
PROVISIONAL SPECIFICATION.
Improved Mechanism for Raising and Lowering the Toothed Driving
Gear of Locomotive Engines for Rack Railways and Tramways.
I, FRANCIS RINECKER of Würzburg, Germany, Engineer do hereby declare the
nature of this invention to be as follows:-
My invention relates to engines having toothed driving wheels, gearing with racks
on the permanent way of railways and tramways.
In certain cases, more particularly for road tramways where the tops of the toothed
racks require to be flush with the roadway, it is necessary to raise the toothed wheels
or pinions out of gear with the racks when the engine is to be propelled by the
ordinary driving wheels. For this purpose I employ the following arrangement of
mechanism.
Below the boiler of the engine I arrange a frame mounted at one end with eyes
loose upon one of the axles of the running wheels, or upon a cylindrical part of a
casing enclosing such axle and attached to the axle boxes, while the other end fits
with hook shaped parts over another axle of the engine or over a casing enclosing the
axle, so that this end of the frame can be raised off its support, turning with the eyes
at the other end upon its support.
This frame carries the axle of the toothed wheel or wheels, so that when the frame
is in its lowered position, resting with the hooked ends on the axle, the toothed wheel
or wheels is or are in gear with the toothed rack or racks, and when the frame is
raised, the wheel is brought out of gear. Such raising and lowering of the frame is
effected by means of a steam cylinder fixed to the engine framing beneath the boiler
and connected either directly or by means of levers with the said frame. The frame
is locked in the raised and lowered positions by suitable locking bolts or catches
worked by the engine driver through levers and rods, such locking bolts or catches
being conveniently mounted on the beforementioned casing enclosing the axle on
which the frame rests, and made to enter the one or other of two sets of notches or
holes in the frame.
คนบ
CTI
1000
ABEL & IMRAY,
Agents for the Applicant.
COMPLETE SPECIFICATION.
Improved Mechanism for Raising and Lowering the Toothed Driving
Gear of Locomotive Engines for Rack Railways and Tramways.
I, FRANCIS RINECKER of Würzburg Germany, 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 :-
My invention relates to engines having toothed driving wheels, gearing with racks
on the permanent way of railways and tramways.
In certain cases, more particularly for road tramways where the tops of the toothed
racks require to be flush with the roadway, it is necessary to raise the toothed wheels
or pinions out of gear with the racks when the engine is to be propelled by the
ordinary driving wheels. For this purpose I employ the following arrangement of
mechanism.
Below the boiler of the engine I arrange a frame mounted at one end with eyes
loose upon one of the axles of the running wheels, or upon a cylindrical part of a
casing enclosing such axle, and attached to the axle boxes, while the other end fits
IP 77

page_text: with hooked shaped parts over another axle of the engine or over a casing enclosing
the axle, so that this end of the frame can be raised off its support, turning with the
eyes at the other end upon its support.
This frame carries the axle of the toothed wheel or wheels, so that when the frame
is in its lowered position, resting with the hooked ends on the axle, the toothed wheel
or wheels is or are in gear with the toothed rack or racks, and when the frame is
raised, the wheel is brought out of gear. Such raising and lowering of the frame is
effected by means of a steam cylinder fixed to the engine framing beneath the boiler
and connected either directly or by means of levers with the said frame. The frame
is locked in the raised and lowered positions by suitable locking bolts or catches
worked by the engine driver through levers and rods, such locking bolts or catches
being conveniently mounted on the beforementioned casing enclosing the axle on
which the frame rests, and made to enter the one or other of two sets of notches or
holes in the frame.
Fig. 1 of the accompanying drawings shews a longitudinal section of the lower part
of a locomotive engine with my beforedescribed invention applied thereto, with the
toothed wheel or pinion lowered so as to be in gear with the rack of the permanent
way; Fig. 3 shews the same view with the toothed wheel in the raised position, Fig. 2
shews a sectional plan, Fig. 4 shews a cross section at X X Fig. 1 and Fig. 5 a cross
section at Y Y. The toothed wheel Z which is here shewn as a double one, with
lateral brake drums, is carried by the frame R R, and when this is in the position at
Fig. 1, the teeth gear with the double rack plate K. The wheel axles A B of the
engine are both enclosed in a cylindrical casing FF the upper halves of which are
respectively fixed to the two axle boxes C C of the axles A B, while the lower halves
are fixed to the upper halves by screw bolts passing through flanges ff.
The casings FF carry the framing R R in the following manner. At those parts
where the framing R R embraces the casings, the flanges FF are cut away. At the
end of framing R that embraces the casing of axle A, it is provided with a separate
piece bolted thereto, which forms a closed eye therewith, that can turn loose on the
casing F. The other end of the framing R rests with its circular hollow upon the
casing of axle B, and is there provided with a locking device N shewn more clearly
at Fig. 5, by which it is secured in either the raised or the lowered position.
Beyond the axle B the two parts of the framing R R are connected together by a
cross bar L, to the middle of which is connected the piston rod of a steam cylinder E
which is fixed to a transverse bearer D secured to the sides of the main framing H H.
In order to enable the framing R R to be raised together with the toothed wheel Z,
the locking bolts N are withdrawn by the engine driver by suitable gear S, and steam
is then let into the cylinder E under the piston whereby the framing R R will be
raised up at that end while turning round the casing of axle A at the other end.
The locking bolts are then shot forward again into holes n n in the framing R R,
thus maintaining this and the wheel Z in the raised position as shewn at Fig. 3.
For lowering the framing and wheel again, the bolts N are again withdrawn from
the holes n, and the steam is allowed to escape slowly out of cylinder E so that the
framing and wheel sinks slowly by their weight; the wheel Z coming in gear with
the rack plate K, running for a short distance upon the same, until it gears into the
holes thereof. The frames are then again locked in position by shooting the bolts N
into the holes m, thus securing the parts in the position shewn at Fig. 1.
The tubular casings F F need only be accurately cylindrical at those points where
the eyes of the framing R bear upon them; the other parts may be of any desired
form. They may also be dispensed with, and the framing R R be mounted in the
described manner upon the axles A B themselves.
The steam cylinder E may be arranged in a horizontal or inclined position, its
piston rod being in that case connected to the framing R by a bell crank lever.
The locking device employed may be of any known construction. The toothed
wheel Z can be either single or double, and there may be two or more separate toothed
wheels driven by the engine, mounted in the framing R.

page_text: 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 a locomotive engine for rack railways and tramways, raising and lowering the
framing carrying the toothed wheel by means of a steam cylinder fixed below the
boiler, the said framing being for this purpose mounted with its one end rotatable
upon a supporting axis and being also secured in the raised and lowered position by a
suitable locking device substantially as described.
Dandth: 10th
_: 1000
ABEL & IMRAY,
Agents for the Applicant.