Year: 1887

page_text: Date of Application, 12th Sept., 1887
Complete Left, 7th June, 1888
Complete Accepted, 13th July, 1888
I, FRITZ BERNHARD BEHR, of No. 10 Drapers Gardens, in the City of London,
Engineer, do hereby declare the nature of this Invention to be as follows:-
This invention relates to means of readily and rapidly bringing the wheels of a
tender into use as driving wheels in addition to those of the locomotive to which the
tender is connected, and of readily and rapidly disengaging them when their driving
power is not required, the tender for this purpose being provided with an engine that
can be worked with steam from the locomotive boiler. The chief object of the
arrangement is at once to obtain increased traction power for a train when it has to
ascend a gradient, and to dispense at once with this additional power when it is not
required. For this purpose, a pair of cylinders on the tender, supplied when required
with steam by a pipe connecting them with the locomotive boiler, work a crank shaft,
a wheel on this crank shaft gears with a wheel which is loose on a countershaft but
which can when desired be clutched thereto by means of a friction clutch. This
countershaft has cranks which are coupled by side rods to cranks on the axles of the
tender. Thus, when by opening a valve in the steam pipe and by engaging the
friction clutch the countershaft is caused to revolve, the axles of the tender are also
caused to revolve and the tender wheels act as driving wheels. But when the clutch
is disengaged, the countershaft and axles of the tender are left free, and the tender
wheels then revolve merely as running wheels. The friction clutch which is preferably
employed is of the following construction. The loose wheel on the countershaft has
on each side of it a conical boss and on the countershaft are two hollow conical cheeks

page_text: one on each side of the wheel, fitted on the shaft with feathers, so that they can slide
along the shaft but must revolve with it. These cheeks have grooves in which are
fitted rings that can be advanced or retracted by means of lovers worked by right and
left screw threads on a transverse spindle, and this spindle is connected to a handle or
hand wheel at the front of the tender. When the engine driver desires to get the aid
of the tender for traction, he opens the steam supply valve for the tender engine and
by turning the handle or hand wheel he causes the conical checks to advance
simultaneously on each side of the wheel on the countershaft until they get sufficient
frictional hold of its bosses, and thereupon the countershaft and the tender axles that
are coupled to it are made to revolve, and the tender wheels act as driving whools.
On turning the handle or hand wheel in the opposite direction, the friction clutch is
released and the tender wheels revolve freely as running wheels.
Dated this 12th day of September 1887.
ABEL & IMRAY,
Agents for the Applicant.

page_text: I, FRITZ BERNHARD BEHR of No. 10 Drapers Gardens in the City of London
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:
This invention relates to means of readily and rapidly bringing the wheels of a
tender into use as driving wheels in addition to those of the locomotive to which the
tender is connected, and of readily and rapidly disengaging them when their driving
power is not required, the tender for this purpose being provided with an engine that
can be worked with steam from the locomotive boiler. The chief object of the
arrangement is at once to obtain increased traction power for a train when it has to
ascend a gradient, and to dispense at once with this additional power when it is not
required. For this purpose a pair of cylinders on the tender, supplied when required
with steam by a pipe connecting them with the locomotive boiler, are applied to work a
crank shaft which by means of a friction clutch can when desired be made to drive the
axles of the tender, thus rendering the tender wheels driving wheels, or when the
clutch is disengaged, these wheels are simply running wheels. The invention can be
applied to tenders either for single rail or for ordinary double rail railways as shewn
by the accompanying drawings. Figs. 1, 2 and 3 illustrate its application to a tender
suited for a single rail, and Figs. 4, 5 and 6 illustrate its application to an ordinary
double rail tender.
Fig. 1 is a part longitudinal section Fig. 2 is a sectional plan and Fig. 3 is a part
end view of a single rail tender.
Fig. 4 is a longitudinal section of a double rail tender.
Fig. 5 is a plan taken under the tank and Fig. 6 is an end view of the same.
Referring first to Figs. 1, 2 and 3 two cylinders, one of which is shewn at O (Fig. 1)
are fixed on the upper part of the tender one on each side at the end next the foot
plate, and are supplied with steam from the locomotive boiler when the driver opens a
valve for that purpose. The pistons of those cylinders drive a crank shaft S which
revolves in suitable bearings in the upper part of the tender frame. On the shaft S
is fixed a pinion P which gears with a wheel A below it, this wheel being free to
revolve on a second crank shaft B. To this wheel is applied the friction clutch which
will be presently described so that when the clutch is engaged the shaft B is caused
to revolve. Cranks at the ends of the shaft B are coupled by rods in the usual way to
cranks on the axles of the central running wheels W W, and thus when the shaft Šis
worked from the cylinders and the wheel A is clutched to the shaft B, the
wheels W W are made to act as driving wheels. When, on the other hand the clutch
is disengaged, the shaft B is free to revolve along with the axles of W.W. which then
act as running wheels. The bearings of the shafts or axles and the side rods connecting
their cranks are not shewn in detail as these are matters of ordinary construction
forming no part of this invention.

page_text: On each
The friction clutch is constructed and operated in the following manner.
side of the wheel A there is fitted on the shaft B free to slide along it on a feather or
key a disc D presenting a conical recess to receive a conical boss E of the wheel A.
In each of the discs D is formed a groove which is occupied by a ring F, each ring
having projecting pins engaged in holes of a pair of levers G G one on each side of
the ring F. The levers G have their lower ends pivotted to brackets at H and their
upper ends are pivotted to nuts K which fit on right and left screw threaded parts of
a transverse spindle L. The holes of the levers G at H and K are slotted to allow for
the oscillation of the levers on their pivots. The spindle L is connected by bevil
gear M to a spindle N which terminates in a hand wheel or handle within reach of the
driver on the foot plate. When he turns this in the one direction he causes the
spindle L to revolve and its right and left threads cause the nuts K to move towards
each other deflecting the levers G inwards. These levers acting on the rings F force
the discs D towards the wheel A so that their conical recesses grip the bosses of the
wheel producing such frictional hold that the wheel A in revolving causes the discs D
to revolve with it. As these discs are feathered or keyed on the shaft B that shaft is
thus driven, and from it the wheels W W are driven. When the driver turns the
spindle N in the opposite direction, the discs D are withdrawn from the wheel A,
which then revolves freely without driving the shaft B.
The
In Figs. 4, 5 and 6 the arrangement is substantially the same, parts corresponding
with those in Figs. 1 2 and 3 being marked with similar letters of reference.
tender in this case however, being assumed to be one having six wheels, the axle of
the middle pin is utilised as the shaft B carrying the wheel A and the friction
clutch.
Having now particularly described and ascertained the nature of this invon-
tion and in what manner the same is to be performed I declaro that what I
claim is :-
1. In a locomotive tender, an engine thereon worked by steam from the locomotive
boiler in combination with gearing driven by the engine and a friction clutch arranged
to engage the gearing with the axles of the tender wheels, substantially as and for
the purpose set forth.
2. As a friction clutch for engaging gearing worked by an engine on a locomotive
tender with the tender axles, the combination of a conically bossed gear wheel loose
on its shaft, with two conically recessed discs and with a pair of levers and screwed
spindle, substantially as described.