Improvements in Steam Engines.
Year: 1889

page_text: Date of Application, 23rd Nov., 1889-Accepted, 12th Apr., 1890
COMPLETE SPECIFICATION.
Improvements in Steam Engines.
I, HERMANN STAPS of Hannover in the Kingdom of Prussia, German Empire,
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 :-
The ordinary steam engines, in spite of their many advantages and manifold
application have several faults in their action, which are caused by sundry turning
pivots, swinging bodies and dead-weights. Crank-shafts, crank connecting-rod, cross-
head and eccentric all tend to make the machine clumsy.
Without considering that the mere length of the connecting rod causes the machine
not to move with perfect smoothness, the above-mentioned parts cause continuous
jerks which are hurtful to the machine and its foundation.
By means of my invention these faults are for the greater part avoided, inasmuch
as on the one hand the parts above mentioned as having an unfavorable influence on
the machine, are done away with and on the other hand the arrangement of two
inlet and two outlet slides separated from each other, brings the injurious action to
a minimum, thereby increasing the capacity of the machine, decreasing consumption
of fuel, ensuring greater safety and more silent working.
In the drawings herewith:-
Fig. 1 is a longitudinal section.
Fig. 2 is a cross section.
Fig. 3, ground plan.
Fig. 4 cross section through piston rod, slide and box in which the latter rotates.
Figs. 5 and 6, sectional views of slide boxes.
In cylinder A moves the piston B, its motion being controlled by the passage of
the guide arms C in the endless channel d.
At end of piston rod is slide e fitted in box E, said box E turning in the bed F,
by the action of two feathers or splines f, placed opposite each other. On the box E,
is fitted flywheel S ;-and said box also carries toothed wheel g, gearing with similar
wheel h, to turn the reversing shaft, in such manner that one double stroke of the
piston corresponds with one turn of the reversing shaft.
The slide-boxes G, for the plate shaped inlet-slides i are preferably arranged on
underside of cylinder A, one at each end thereof, and obliquely, or at an angle with
one another in relation to the circumference of the said cylinder A, as indicated by
the relative angles of the dotted lines outside the diameter of the cylinder, in Fig. 2
of the Drawings.
The slide boxes L at the outlet channels, with their slides n (a cross-section of one
of which is shown in Fig. 6), are also placed obliquely, or at a similar angle relatively
to one another; and directly opposite the inlet slide boxes, one at each end of the
cylinder. The motion of the inlet slides i is effected by means of boxes o (Fig. 1)
which are wedged to the reversing shaft, and provided with knobs on their flanges, to
raise and lower the double levers p.
A semi-circular groove is cut in box o, which permits of the box 9 turning, and
both boxes, which. are pushed over each other, are prevented from separating by
means of a pin which unites both boxes, and still permits one box to turn inde-
pendently of the other.
The box g, which is screwed by a steep thread into the bed r, carries a spur-wheel,
which gears in the rack s, and (in connection with levert on shaft u, which latter
rests in beds v) causes the box q to turn when the governor throws out.
The slightest turn causes the box q, with its steep thread, to be rapidly screwed
into
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lever p quickly, and decrease or increase the stroke of the slide. The levers
bent, and have their turning point in the brackets w. By their forked ends, they
grip the shoulders of slide-rods (Figs. 3 and 5).
The closing of the slides is caused when the levers move back by means of springs
which press on the slide rods in spring boxes x.
The levers y of outlet slide n, have their turning point at (Fig. 2), and gear
with the cam wheels H, which have channels in their periphery and cause the
throwing out of lover y. The levers y grip with their likewise fork-shaped ends
into the shoulders of sliding rods 1, and cause the opening and closing of the outlet
channels.
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
In direct-acting motors, rotating by means of helical circular or elliptical grooves in
the cylinder, the arrangement upon the said cylinder of two inlet and two outlet slides
respectively, operated by means of a reversing shaft, actuated from the guido box E,
through spur-wheels (g and h) and moved by means of lever p and y and boxes o,
provided with knobs; the aforesaid inlet and outlet slides being under the control
of the regulator, so that a racks causes the turning of a spur wheel attached to a
7, provided with a thread, and screwed on box o, causing the knobs to approach
more or less near to levers p, thus altering the stroke of the slide, all substantially
as described and shown in the drawings.
box
Dated November 23rd 1889.
HERMANN STAPS.
Per C. R. Bonne & Co.,
His Agents.