Improvements in Rope Driving Gear.
Year: 1889

page_text: COMPLETE SPECIFICATION.
Improvements in Rope Driving Gear.
I RUDOLF HORNSTEINER of Zizkor, Prague, in the Kingdom of Bohemia
Manufacturer, do hereby declare the nature of my said invention and in what manner
the same is to be performed, to be particularly described and ascertained in and by
the following statement :-
The object of my invention is to effect improvements in the application of rope
driving gear to shafts, situated in two parallel planes, the pulleys being so arranged
as to be efficient transmitters of power although placed at various angles, in such
parallel planes with respect to each other; tension and guide pulleys being used to
take up the slack and guide the ropes to the respective pulleys.
And in order that my said invention may be particularly described and ascertained,
reference is hereby made to the accompanying drawings, in which similar letters of
reference indicate corresponding parts.
Fig. 1. is an elevation and Fig. 2. a plan, illustrating one of my arrangements of
rope driving gear. In this arrangement the pulleys are so placed that they form a
triangle in plan. x and y y are the axes of the driving and driven pulleys A
and B.
The transmission of power from one pulley to the other is produced by means of
rope, under constant tension. In Figs. 1 and 2 the pulleys A and B are so mounted
that the grooves are at right angles to each other, but the angles may be very much
varied in practice. C is a fixed guide pulley and T is the tension pulley, which may
be strained to the required tension by means of a weight, spring, cylinder and
piston, or otherwise.
In Figs. 3 and 4 another arrangement is shown, in which the plan view assumes
an irregular quadrangle.
Figs. 5 and 6 show a somewhat similar arrangement, the plan view of which also
assumes an irregular quadrangle.
In the above mentioned figures the rope surrounds the driving and driven pulleys
to the extent of 180°.
In some cases wherein a swift motion and small strain only are required, the
arrangement shown in elevation in Figs. 7 and 9 and in plan in Fig. S will be found
useful, the rope surrounding the pulley to the extent of 90° or thereabouts.
Figs. 10, 11, and 12 show another adaptation, with three auxiliary pulleys.
In some cases I construct a rope gearing with additional auxiliary pulleys and
either with vertical tension as shown in Figs. 13 to 16, or with horizontal tension as
shown in Figs. 17, 18, and 19.
Fig. 16 shows the detail of my shifting pulleys. described in Letters Patent
No. 16,28687 and 13,410. A. is the driving pulley and A¹ is an auxiliary pulley
with a shifting groove into which the rope is transferred for stopping or ceasing to
drive B. The pulley A' is loose on the axis
r.
In Figs. 17, 18, and 19, one of the two pulleys B or B¹ is loose on the axis y y_;
T being the tension pulley the rope or cord runs from A by C beneath T round B
to T, from thence round B¹ to D. and back to A or vice versa.
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 1
claim is :-
1. In rope driving gear in which the axial lines of the driven and driving pulleys
cross each other in two parallel planes, the combination therewith of the pulleys, C
and T for changing the direction of the rope or cord while it remains tangent to two
successive grooves, although the pulley T may vary its position of tension, sub-
stantially as hereinbefore described and illustrated by the drawings.

page_text: 2. In rope driving gear in which the axial lines of the driven and driving pulleys
cross each other in two parallel planes, the combination of the four pulleys, A. B. C,
&T forming a triangle or quadrangle, if projected in the direction of their planes,
substantially as hereinhefore described and illustrated by the drawings.
3. In rope driving gear in which the axial lines of the driven and driving pulleys,
cross each other in two parallel planes, the disposition of the running rope or cord in
two planes only, substantially as hereinbefore described and illustrated by the
drawings.
4. In rope driving gear in which the axial lines of the driven and driving pulleys
cross each other in two parallel planes, the combination therewith of three or more
auxiliary pulleys, with a vertical or horizontal tension pulley, substantially as herein-
before described and illustrated by the drawings.
5. The general constructions, combinations, and arrangements of the several and
respective parts, together constituting my invention of improvements in rope driving
gear, substantially as hereinbefore described and illustrated by the drawings.
D 10 T
1000
GEO. DOWNING,
8, Quality Court, London, W.C., Agent for Applicant.