IMPROVEMENTS IN ELECTRO MOTOR ENGINES FOR USE ON RAILWAYS
Year: 1883

page_text: LETTERS PATENT to Frederick Hahn Danchell of N° 47 Tunbridge Road
Maidstone in the County of Kent Civil Engineer for an Invention of
IMPROVEMENTS IN ELECTRO MOTOR ENGINES FOR USE ON RAILWAYS
PROVISIONAL SPECIFICATION left by the said Frederick Hahn Danchell
at the Office of the Commissioners of Patents on the 31st December 1883.
FREDERICK HAHN DANCHELL. of N° 47 Tunbridge Road Maidstone in the
County of Kent Civil Engineer "IMPROVEMENTS IN ELECTRO MOTOR ENGINES
FOR USE ON RAILWAYS"
These improvements have reference to electro motor engines of the character of
those described in the Specification of Letters Patent granted to one Peter Jensen
bearing date the 24th day of January of this present year (on a communication
made by me to him from abroad) and the present improvements more particularly
relate to means of driving the wheels of the locomotive carriages which run in
contact with the rails.
According to my present improvements I arrange these wheels so that their axes
on either side pass through the supports applied to their side framings which may
be arranged much as is described and shewn in the aforesaid specification or
according to such modifications thereof as may be found desirable and I drive the
said wheels by means of friction wheels arranged so as to have frictional contact
therewith and these frictional wheels are suitably mounted on axes passing through
and being driven by the electro motors, which motors as well as the frictional
wheel axes also take their bearings from the side framings of the carriages.
By these means I am enabled to drive the friction wheels at a much greater
speed than the speed necessary for the bearing wheels and each frictional wheel
can be employed to give motion to the peripheries of both fore and aft bearing
wheels if desired.
:
In some cases instead of driving the bearing wheels by means of frictional
contact between their peripheries and the outer surfaces of revolving friction
wheels, the frictional contact may be obtained from the sides or auxiliary parts of
the bearing wheels in which case the form of the frictional wheels may be modified
accordingly.
Suitable adjusting means are provided for bringing the bearing wheels'
peripheries or parts into such close contact with the friction wheels as may be
desirable.

page_text: SPECIFICATION in pursuance of the conditions of the Letters Patent filed
by the said Frederick Hahn Danchell in the Patent Office on the 27th June
1884.
FREDERICK HAHN DANCHELL of N° 47. Tunbridge Road Maidstone in the
County of Kent Civil Engineer IMPROVEMENTS IN ELECTRO MOTOR ENGINES
FOR USE ON RAILWAYS
These improvements have reference to electro motor Engines of the character of
those described in the Specification of Letters Patent granted to one Peter Jensen
bearing date the twenty fourth day of January One thousand eight hundred and
eighty three (on a communication made by myself to the said Peter Jensen from
Abroad) and the present improvements more particularly relate to means of driving
the wheels of the locomotive carriages which run in contact with the rails
According to my present improvements I arrange these wheels so that their axes
on either side pass through the supports applied to their side framings which
framings may be arranged much as is described and shewn in the aforesaid
Specification of Letters Patent or according to such modifications thereof as may
be found desirable and I drive the said wheels which run on the rails by means of
friction wheels arranged so as to have frictional contact therewith and these
frictional driving wheels are suitably mounted on axes passing through and being
driven by the electro motors, which motors as well as the frictional wheel axes also
take their bearings from the side framings of the carriages
By these means I am enabled to drive the friction wheels at a much greater
speed than the speed at which it is necessary to drive the bearing wheels and each
frictional wheel can be employed to give motion to the peripheries of both fore and
aft bearing wheels if desired.
In some cases instead of driving the bearing wheels by means of frictional
contact between their peripheries and the outer surfaces of revolving friction wheels
the frictional contact may be obtained from the side or auxiliary parts of the
bearing wheels in which case the form of the frictional wheels may be modified
accordingly and should one auxiliary wheel or circular part on the axis of each pair
of bearing wheels be placed centrally, one corresponding friction driving wheel to
the driven wheel driving each two pairs of bearing wheels only would be needed
Suitable adjusting means are provided for bringing the bearing wheels'
peripheries or parts into such close contact with the friction wheels as may be
desirable.
I attain these objects by means of the mechanism illustrated by the accompanying
drawings in which:
Figure 1. is a side elevation of an electro motor carriage according to my
invention mounted on a railway adapted to carry it and maintain its correct
position in running thereon
Figure 2 is a sectional end view of the same at about the line A* A* of Figure 1.
Figure 3 is a side elevation of the like electric motor engine only that it is arranged
so as to be adapted to the conditions necessary for use as an existing line of double
railroad where ordinary locomotives and other rolling stock are also in use and
Figure 4 is a sectional end view of Figure 3
Figure 5 is a sectional end view of an electric motor engine and railway
especially arranged or adapted for such motor engines to run upon a double track.
The like letters of reference refer to like parts of the apparatus throughout the
drawings wherever they occur

page_text: The permanent way consists of the bottom rail or rails A. for the wheels H to
run upon (and upon this rail or these rails the weight of the locomotive and
carriages bears) and of the top rail or rails B which serve the twofold purpose of
guiding and steadying the train and of conveying the current to the motor, the
return current passing through the earth. Both single rails are held and fixed in
frames C which entirely surround the whole of the permanent way and train as
will be seen in Figures 1. 2. and also in the double rail arrangement shewn by
Figure 5, this enclosing frame is similarly continuous.
These frames are made alike and have their rail bearings made to gauge so as to
do away entirely with packing or fitting and so as to ensure that the centre line of
the upper and lower rail is exactly in line at right angles to the bottom flange
when a single rail is employed, as a base for the wheel to run on, as described in
the Specification aforesaid and similar provisions for supporting the frames C to
those therein described should be made, as well as for bedding the rails and
protecting the parts.
The construction of the carriage may also be similar to that described in the said
Specification. The motor carriage is guided laterally at the upper part by means
of wheels I in pairs. The spindles of these wheels work in bearings or sockets K.
which are fixed on square rods K' which rods serve also to connect the frame
bars E but from these however they are insulated by suitable bushes and washes.
Figure 4 shows an alternative arrangement of railway with two bottom rails A
wherein the conductor rails B are fastened to side posts C along the line instead of
being enclosed within continuous frames as in Figures 2 and 5. D are cross-
sleepers. Hare the axles and H the wheels.
The contact rollers on either side of rail B revolving in contact therewith on
spindles supported in brackets capable of sliding adjustably on a bar connected to
the frame bars E and carrying springs adjustably adapted to keep the contact
wheels up to the rail B, may be arranged in manner substantially as described in
the Specification aforesaid. N. represents the electro motor which may be of the
"Siemens" type for instance, which drives the axis of the friction wheel or it may
be wheels P, which wheel. or wheels. P. in turn drive by their frictional contact
main wheels H of the locomotive.
By this method of driving by frictional contact of surface of driving and driven
wheels herein described I am enabled to employ quickly running electro motors and
to transmit the motion derived therefrom directly and in a more convenient
manner to the road wheels or to the road wheel axles and so to the road wheels
without developing side strain on the driving wheel axles and the axles of the
driving friction wheels may be driven at a much higher rate of speed than the
driven road wheel axles
Suitable adjusting screws and slides R are provided attached to the framing for
bringing the peripheries of the bearing wheels into such close contact with the
friction driving wheel as may be desirable. Springs may be interposed between
the screws and the slides for the purpose of producing contact between the wheel
surfaces.
According to an alternative modification of my invention instead of driving the
bearing wheels by means of frictional contact between their peripheries and the
like peripherical surfaces of revolving friction wheels and shewn and described in
respect of Figure 4 of the accompanying drawings the desired frictional contact
may be obtained from side, auxiliary, or rim parts H2 on or applied to the
wheels H or their axles and in the case of one wheel H2 only, being applied
centrally of each of the axes of the pairs of wheels H the frictional driving wheel P.
will be correspondingly centrally placed somewhat as in Figure 2.
Having thus described and ascertained the nature of the said invention and
means adapted for carrying the same into practical effect I would have it
understood that what I claim is the improvements in Electro motor engines for use

page_text: on railways wherein frictional driving wheels affixed upon the motor spindles are
applied, with suitable means of regulating frictional contact, between each two
bearing wheels, or equivalent parts substantially as set forth
In witness whereof I the said Frederick Hahn Danchell have hereunto set my
hand and seal this twenty sixth day of June in the year of our Lord One
thousand eight hundred and eighty four :
FH DANCHELL. (L.S.)