Improvements in Locomotives.
Year: 1891

page_text: COMPLETE SPECIFICATION.
Improvements in Locomotives.
I, JOHN FISH, of Summit, Union County, New Jersey, United States of
America, 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 improvements in locomotives, having driving wheels with
double flanges that run upon a single rail, placed between two outer rails, the three
rails being about on the same plane, in connection with a pilot bogie truck having
an axle upon the ends of which are secured flangeless bearing wheels which
run upon the outer rails, and form a stable support to the motor when not
running.
The invention also consists in the combination of a double flanged pilot wheel
running upon the centre rail, and mounted upon the outer end of the bogie
truck, which controls and determines the axial line of the bearing wheels and
axle, so as to cause them to run normal with the outer rails when running around
curves.
The invention also consists in a novel form of bolster block attached to the bogie
frame by a centre pin bolt, and it is also connected to the saddle which connects
the barrels of the twin boilers, the upper part of bolster block is formed on a curve
with a radius having its centre on top of centre rail, the saddle is connected to top
of bolster by means of two bolts with "tee" heads placed in grooves concentric
with top of bolster, by this arrangement the position of the transverse plane of the
double flanged pilot wheel mounted on the end of pilot bogie truck is governed
by the direction of the line of the centre rail, whether it is straight or curved, and
controls the axial line of the bearing wheels so as to run in the same direction, the
truck frame carrying the three wheels being free to swing around the centre pin of
the bolster, also the transverse motion of the motor in passing around a curve,
swinging inwards, can move around the curved face on the top side of the bolster,
thus the purpose for which the pilot bogie truck is used, being to give a stable
support to the motor, when not in motion, has its parts so arranged that it will not
offer any disturbing action upon the main driving wheels on the centre rail when
they are running around a curve.
The invention also consists in the combination of a pilot bogie truck, bolster
and saddle with a twin or double boiler hung below the centre of the centre.
driving wheel shafts and each boiler outside of the driving wheels, thus-bringing
the centre of gravity close to the rails, and thereby causing the motor to run
steadier.
I attain these objects by the mechanism illustrated in the accompanying drawings
in which
Fig. 1, represents a side elevation of the bicycle locomotive.
Fig. 2, represents a plan view of Fig. 1.
Fig. 3, represents end view forward of Fig. 1.
Similar letters refer to similar parts throughout the several views.
Fig. 4, represents an end view of pilot bogie truck as attached to barrel of twin
boilers.
Fig. 5, represents a side elevation of pilot bogie truck.
Fig. 6, represents a plan view of pilot bogie truck, with the double flanged pilot
wheel, and outside bearing wheels on their respective rails.
Fig. 7, represents a part section through line a, a, in Fig. 6.
In Fig. 1st and Fig. 2nd, A, represents barrel of waist of twin locomotive boiler;
B, fire-box end of same: they are connected securely at the forward and be the

page_text: frame bracket C, and bogie truck saddle D; at the fire-box end they are braced
by the bracket G; these boiler bracket connections allow the twin boilers to be
separated a sufficient distance to allow the centre driving wheels to work free and
clear between them; the engine frame F is placed on top of boiler and properly
secured thereto. Carrying crank and coupling axles, driving wheels and steam
cylinders, HH, represents bogie trucks, one under forward end of boiler and one
under foot plate of locomotive. I, I, represents double flange pilot wheel on pilot
bogie truck; J, J, flangeless bearing wheels on pilot bogie truck running on outer
rails.
In Fig. 4, Fig. 5, Fig. 6 and Fig. 7, K, represents top plate of bogie truck,
secured to under side of bolster block L, but attached so as to swing around
the centre pin bolt M, which is secured rigidly in bolster block, into the upper
part of bolster block L, are two grooves N, N, concentric with the upper face
of the block, into which are placed two tee headed bolts O, O, rigidly secured
to the saddle P, which is attached to the boilers-but the heads of these bolts
are fitted to slide freely in the grooves of the bolster block L, and an elongated
opening Q, Q, as is shown in saddle Fig. 6 and Fig. 7, for the centre pin nut
in block, allows for a transverse motion of the motor and saddle on the bolster
block.
I do not confine myself to the use of two centre rail driving wheels on the motor,
for where it is desirable to have lightness as to weight and shortness as to length,
one centre rail driving wheel can be made to fulfil the conditions.
Having now particularly described and ascertained the nature of my said inven-
tion, and in what manner the same is to be performed, I declare that what I
claim is :-
:-
1st. In a bicycle locomotive, a pilot bogie truck, carrying a central double
flanged pilot wheel running on a central rail, in combination with two flangeless
bearing wheels running upon outer rails, substantially as specified and arranged
and for the purpose as herein set forth.
2nd. In a bicycle locomotive, a pilot bogie truck with central rail pilot wheel
and outer rail bearing wheels in combination with a bolster and centre pin, sub-
stantially as specified and described and for the purpose as herein set forth.
3rd. In a bicycle locomotive the combination of the pilot bogie truck and
bolster, with saddle bracket, substantially as specified and for the purpose as set
forth.
4th. In a bicycle locomotive the twin boiler suspended below the centre of
and each outside of the centre rail driving wheel or wheels, in combination with
a pilot bogie truck having a double flanged centre rail pilot wheel and outside
bearing wheels running upon outer rails, substantially as specified and as herein set
forth.
5th. In a bicycle locomotive the central driving wheel or wheels running upon a
single rail in combination with a bogie truck having a double flanged pilot wheel
and outer bearing wheels, substantially as specified and described and for the
purpose as herein set forth.
Dated this 9th day of February 1891.
CART MAEL & Co.,
Agents for the Applicant.