Ice-sledge.
Year: 1897

page_text: Date of Application, 28th Oct., 1897
Complete Specification Left, 25th July, 1898-Accepted, 15th Oct.,.1898
14
Ice-sledge.
1 61-197 171.
AI, BERNST ALFRED PAUL HENNIG, Professor in Dresden, Saxony, 93,
Königsbrückerstrasse, do hereby declare the nature of this invention to be as
follows:
:1
1.016 923 124
This invention relates to certain new and useful improvements. in ice-vehicles
that may be moved by t
the rider himself, by steam or electric power or any other
motor.
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The invention consists in a sledge the runners of which are supplied. by two
propelling-screws, symmetrically arranged and apt to both, to support and to
drive the carriage, along, when revolved.
LAATLER
In the accompanying drawings, Figure 1 represents the sledge seen from above;
Figure 2 a cross-sectional view of the fore-part.
Similar letters of reference indicate corresponding parts.
S, represent the propelling-screws, arranged on the shafts, W... The edge of the
blade will cut the surface of the ice sufficiently, to drive, the vehicle along, when the
screws are revolved. L, are the bearings in which the shafts, W, revolve. They
are connected with the summers, B, supporting the frame,, F, upon which the
pillars, G, sustaining the seat, P, are placed. The shafts of the screws' gear with
the double-cranked shaft, M, contrived suitably to be worked by foot-power or any
other motor. Any contrivances appropriate to steer and stop the carriage will be
employed.
I, ERNST ALFRED PAUL HENNIG, Professor in Dresden, Saxony, 93, Königs-
brückerstrasse, 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 certain new and useful improvements in ice-vehicles that
may be moved by the rider himself, by steam or electric power or any other motor.
The invention consists in a sledge the runners of which are replaced by two
propelling-screws, symmetrically arranged and fit both for supporting and driving
the carriage along, when revolved.
"

page_text: .
In the accompanying drawings, Figure 1, represents the sledge seen from above,
Figure 2, a cross-sectional view of the fore-part, Figures 3 and 6, are profiles of
variations of the gearing; Figures 4 and 5, their views taken from behind.
Similar letters of reference indicate corresponding parts. S, represent the
propelling-screws, arranged on the shafts, W. The edge of the blade will cut the
surface of the ice sufficiently, to drive the vehicle along, when the screws are
revolved. L, are bearings (ball-bearings) in which the shafts, W, revolve. They
are connected with the summers, B, supporting the frame-plate, F, upon which the
pillars, G, sustaining the saddle-seat, P, are placed. The shafts of the screws gear
-by means of two conic wheels and the cog-wheel, O, attached altogether to the axis,
T, and the cog-wheel, V,-with the double-cranked shaft, M, contrived suitably to
be worked by foot- or hand-power or any other motor.
Any contrivances appropriate to steer and stop the carriage will be employed.
The forward portion of the screws or, in some cases, the hind part, may be
dispensed with and replaced by a runner, A, turning around the steering-staff, i̟,
(Figure 3) and serving both for supporting and guiding the carriage.
The gearing used in Figures 1 and 2, will also be replaced otherwise, for instance,
as it is shown in Figures 3 and 4, where the conic wheels, R, of the screw-shafts
are replaced by the cog-wheels, R₁, and the connection with them and the conic
gearing, arranged on the upside of the frame, is performed by a chain-work, CD,
or as Figures 5 and 6 represent-by two diagonally toothed wheels, R., R., one
of which is attached to the rotary shaft, M, the other to the screw-shaft, W.
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 :-
An ice-sledge, characterized by symmetrically arranged propelling-screw-runners, S,
that revolve in bearings (L); gear with a rotary shaft, M, support the frame, F,
of the carriage and drive it along, when they are revolved.
Dated this 23rd day of July 1898.
ERNST ALFRED PAUL HENNIG,
Professor in Dresden, Saxony.