AN IMPROVED SYSTEM OF TENDERS FOR LOCOMOTIVES
Year: 1867

page_text: PROVISIONAL SPECIFICATION left by George Krauss at the Office of
the Commissioners of Patents, with his Petition, on the 7th May
1867.
I, GEORGE KRAUSS, of Munich, in the Kingdom of Bavaria, Germany,
do hereby declare the nature of the said Invention for "AN IMPROVED
SYSTEM OF TENDERS FOR LOCOMOTIVES," to be as follows:-
The said improvements consist, first, in constructing locomotives and
tenders with a frame which serves as a reservoir for the feed water; second,
in attaching the boiler to the frame of a locomotive in such a manner as to
hold the boiler securely without preventing its expansion; third, in con-
structing the fire-box with concave portions in its sides between the stay bolts
to prevent the plates being injured by the heat; fourth, in constructing the
connecting and coupling rods of H-formed iron to render them light without
impairing their strength; fifth, in the combination of a plate spring with two
coil springs to support the boiler over the rear axle; sixth, in the employment
of peculiarly constructed self-acting spring valves for delivering the condensed
water; seventh, in providing the slide boxes and cylinders with self-acting
lubricators which admit the oil when the steam is shut off; eighth, in feeding
the boiler with a peculiarly constructed injector which requires no regulating
mechanism.

page_text: DESCRIPTION OF THE DRAWINGS.
Figure 1 is a side elevation of a locomotive illustrating my improved mode
of construction; Figures 2, 3, and 4 are transverse sections of the same;
Figures 5 and 6 represent one of my improved tenders; Figures 7 and 8
represent one of the connecting rods; Figure 9 is a section of the valve
employed for delivering the condensed water; Figure 10 is a section of the
self-acting lubricator; Figure 11 is a section of the injector.
The under part of the locomotive is constructed to form a case. or tank A,
which is provided with transverse pieces B for the axles to pass through.
These transverse pieces also serve to stiffen the cheek plates of the axle
boxes. The spring guides a, which are made water-tight, pass through the
case A. The cheek plates are connected at the bottom by the connecting
pieces b, which form the communication between the separate divisions of
the case.
This mode of construction, which gives to the engine a solid base
and also a capacious reservoir for the water, is especially applicable to tank
locomotives. The boiler is securely attached to the transverse beam A'. A
displacing piece, which is provided to allow the boiler to contract and expand,
is connected at the point c to the said boiler, and at the points d with the
frame. The elasticity of the plate allows it to yield or spring between the
points and d. A similar connection is placed behind the fire-box, while
the front end of the boiler is securely fastened by the bar e. Each side of
the fire-box-between the rows of stay bolts f is formed with concave portions,
as shewn in Figure 3, to counteract the effect of the dilatition or expansion
caused by the heat, and prevent any alteration in the length or breadth of the
said fire-box, and injury to the plates composing the same. The top of the
fire-box is connected to the crown of the boiler by bolts which pass through
the flange g rivetted in the crown plate. The heads of the connecting and
coupling rods have no screws or slots; the said heads have a cross piece g¹
and a strap h. The bearings are provided with holes i to contain grease or
other lubricating matter, the said holes being tightly closed at the side. The
keys for adjusting the bearings are fastened or cramped by the pieces k; the
bearings are made of wrought iron, and lined with white metal. The central
postion or piece connecting the heads of these rods is constructed of H-formed
metal, which form gives great strength with a comparatively slight weight.
The elastic support of the engine on the rear axle is obtained by the com-
bination of the plate spring p and two spiral springs q, which are attached to
the frame by - formed beams. The ordinary delivery cocks for the
condensed water from the cylinder are replaced by peculiarly constructed self-

page_text: acting valves m, Figure 9, which discharge the water as it is produced at each
stroke; the said valves are opened by the spiral springs n.
The self-acting lubricator is constructed as follows:-The main part is a
valve, the stem of which is hollow and communicates with the lubricating
vessel and the steam chest. When steam is admitted the hollow stem of the
valve is filled through the aperture o¹, and the steam being shut off the oil
passes through the channel p into the steam chest. The boiler is fed by a
peculiarly constructed injector, which has no regulating mechanism either for
the steam or water. The steam enters at a', and the feed water enters at 6',
both being mixed at the mouth c. The water passes from the aperture d¹ to
the boiler; a valve or cock is provided to confine the air during the working
of the apparatus, and to increase the effect of the same.
The tender represented in Figures 5 and 6 is also constructed in the form
of a case or tank, provision being made for the axles as before described.
The form and size of the upper part of this tender may be varied to adapt it
to various kind of fuel.