Improvements in Rope Driving Gear.
Year: 1889

page_text: Date of Application, 13th Nov., 1889-Accepted. 28th Dec.. 1889
COMPLETE SPECIFICATION.
Improvements in Rope Driving Gear.
1, RUDOLF HORNSTEINER, of Zizkov, Prague, in the Kingdom of Bohemia, Manu-
facturer, do hereby declaro the nature of my said invention and in what manner the
same 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 that description of rope
driving gear in which an endles rope passes round both the driving and driven
pulleys, the rope being caused to travel in a number of grooves in such pulleys, and
being guided to and from the grooves and kept taut by means of auxiliary tension
and guide wheels or 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, showing one form of my invention, in
which the tension wheel or pulley is placed outside the path of the driving rope
and the intermediate guide wheel or pulley inside such path.
Fig. 3 is an elevation and Fig. 4 a plan showing the tension wheel placed at
right angles to the path of the driving rope.
Fig. 5. is an elevation and Fig. 6 a plan, showing a modification of the arrangement
shown in Figs. 1 and 2.
Fig. 7 is an elevation and Fig. 8 a plan, showing an arrangement in which two or
more tension wheels are fitted.
Fig. 9 is an elevation, Fig. 10 a plan, and Fig. 11 an elevation at right angles to
Fig. 9, showing another arrangement of the tension and other wheels.
Figs. 12 and 13 are elevations, and Fig. 14 is a plan, showing the tension
and guide wheels placed (in two positions) edgways to the path of the driving
rope.
Figs. 15 & 16 are sectional elevations showing the method of erecting the genr
in a building, and Fig. 17 is a detail plan showing an arrangement of duplicate
driving wheels, in which one is provided as a reserve, in case of accident to
the other.
In the arrangement shown in Figs. 1 and 2 the cord passes from the auxiliary
wheel c to the last groove of B and thence to the last groove of A, passing successively
over all the grooves of B and A in order to return over the wheels T and C to the
first groove of A. T is the tension wheel or pulley.
The pulley T revolves in the same direction as the shafting. The same motion
occurs with reference to the modification shown in Figs. 5 and 6. The motion of
the tension wheel T in Figs. 3 and 4 may be perpendicular or inclined, relatively to
the cord on A and B. The cord on T is parallel to the direction of the tension, the
cord passing over two auxiliary wheels C and C'.
Figs. 7 and 8 illustrate arrangements wherein there is no room for auxiliary
wheels, neither between the pulley's A and B nor externally for the extension. In
his case, the wheels must be multiplied. Instead of a single tension wheel I place
wo or more such wheels upon the same axis T and T for instance.
The cord passes
rom the last groove of the pulley A to the fixed auxiliary wheel N, then over the
ront tension wheel T; then over the fixed auxiliary wheel C
wheel T'; the fixed auxiliary wheel M; the front groove of the pulley B, and over
i the rear tension
he first groove of the pulley A, then successively over the grooves of the two pulleys B
ud A in order to return to the last groove of the pulley A. In tightening the cord
y the wheels T. and T' the amount of motion is only half what it would be with a
ngle wheel. The number of tension wheels may be still further increased. The
Price 8d.1

page_text: tension wheel T and its auxiliary wheel C may (if preferred) be placed in one plane,
intersecting the planes of the pulley grooves A and B outside these pulleys. The
wheels T and C may be placed entirely outside the path of the driving rope as
shown in figs. 9, 10 and 11.
In other cases when it is convenient to place the two wheels between A and B, 5
I sometimes use the arrangement shewn in figs. 12, 13 and 14. In this case the
grooves of C and T have a common tangential plane with the grooves of A and B.
In case thero should be insufficient space between A and B to admit of this arrange-
ment, the two auxiliary wheels C and T could be placed outside as shewn by dotted:
lines in Figs. 12 and 14.
In the application of my improved driving gear to a factory (say) of five floors,
illustrated by Figs. 15 and 16, the grooved wheel moon the main driving shaft c
is connected with the four driving wheels n n' n³ n³. These wheels drive the several
pulleys ghkl and p. C is the fixed pulley and T the tension pulley to the main
driving wheels in ench series. de fare the fixed pulleys and srt the tension
pulleys in the intermediate gearing. The arrangement being similar to that shown
by dotted lines in Figs. 12 and 14.
-
Instead of using driving pulloys having nine grooves as shown, I prefer to use
three pulleys with three grooves each, so that each of the three pulleys constitutes,
with the above tension arrangement, an independant driving gear. In either case
all the tension arrangements are fitted in the manner shown in Fig. 3, viz.:
perpendicularly to the direction of the motor rope. The same arrangement is
repeated in the other storeys shown with regard to the nine-grooved pulloys nn' n²
and n³, each of which actuates its nine transmissions by means of a single rope
and three tension arrangements. At each storey can likewise be substituted for
the pulley with nine grooves, three pulleys with three grooves, or one pulley with
But all the shafts yyy' and y
four grooves and one with five grooves, and so on.
are driven by the main shaft x x and fig. 17 is a plan of the arrangement employed
for this purpose, showing two sets of grooved pulleys arranged side by side and
forming two independent transmissions by rope, one of which is intended to be used
The tension arrangement used in this case resembles the device shown
by dotted lines in figs. 12 and 14.
as a reserve.
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. The improved method of applying endless ropes to grooved driving and driver
pulloys, in combination with tension and guiding pulleys for taking up the slack an
guiding the ropes to the leading grooves of the driving and driven pulley's, substantially
as herein before described and illustrated by the drawings.
2. The general construction, combination and arrangement of the several an
respective parts, together constituting my invention of improvements in rop
driving gear, substantially as hereinbefore described and illustrated by th
JD
Dated 12th November 1889.
GEO. DOWNING,
8, Quality Court, London, W.C., Agent for Applicant.