Improvements in Hoisting and Lowering Apparatus.
Year: 1893

page_text: Date of Application, 21st Nov., 1893
Complete Specification Left, 20th Aug., 1894-Accepted, 13th Oct., 1894
PROVISIONAL SPECIFICATION.
Improvements in Hoisting and Lowering Apparatus.
We, CECIL GEORGE OWEN, and JOSEPH PETER BRAZIL, both of Vulcan Iron
Works, Avonside, Bristol, in the County of Gloucester, Engineers, do hereby
declare the nature of this invention to be as follows:-
This invention has for object to construct hoisting and lowering apparatus in a
simple, compact, and comparatively cheap form, and in such a manner that the
hoisting and lowering drum can be easily and quickly thrown in and out of
connection with a driving wheel or pulley, without stopping the latter, and in and
out of contact with a friction brake block or strap.
In hoisting and lowering apparatus for this purpose according to this invention,
the hoisting and lowering barrel is driven from a driving wheel or pulley through
two frictional driving rings arranged one within the other and mounted upon
relatively adjustable eccentric bearings, the arrangement being such that when the
eccentric bearing or bearings carrying the one ring is or are partly rotated in
one direction relatively to the other eccentric bearing or bearings, the two friction
rings will be brought into frictional driving contact with each other so that the
hoisting and lowering barrel will be actuated from the driving wheel, and upon
the said bearing or bearings being then partly rotated in the opposite direction, the
two friction rings will be disengaged from each other so that the barrel will
be thrown out of connection with the driving wheel without stopping the
latter, whilst by further rotation of the said bearing or bearings in the same
direction, a brake will be applied to resist or control backward rotation of the said
barrel under the action of the load suspended therefrom. The two friction rings
may be connected either directly or indirectly with the barrel and driving wheel
respectively.
As will be obvious hoisting and lowering apparatus according to this invention
can be constructed in various forms.
In one arrangement, one of the friction rings is made as a tubular extension of
the barrel and so as to surround the other friction ring which is made as a tubular
extension of the driving pulley which is grooved to receive a driving belt. The
barrel is mounted to rotate upon eccentrically arranged bearings formed on a
carrying shaft that is mounted in bearings in standards or arms on a bed plate
or frame, and is provided with a weighted lever by which it can be partly rotated.
the driving pulley is mounted to freely rotate upon a sleeve bearing that is
eccentrically mounted upon the said shaft and is fixed to one of the said standards
or arms. This sleeve bearing is also arranged eccentrically to the bearings upon
which the barrel is placed, so that when the said shaft is partly rotated, the
friction ring attached to the barrel will be caused to approach or recede from the
ring attached to the driving pulley according to the direction in which the shaft is
rotated. In the bed-plate or frame and in close proximity to the tubular extension
or friction ring of the barrel is secured a block of wood adapted to serve as a fixed
brake block against which the said tubular extension or friction ring will be brought
when the shaft is turned sufficiently in one direction.
In a modified construction, the tubular extension or friction ring connected to
the driving pulley is arranged to surround that connected to the barrel, and the
brake block is arranged in proximity to another cylindrical extension or ring that
may be provided on the other end of the said barrel.

page_text: In another arrangement the friction ring instead of being connected directly
with the barrel, is mounted to rotate upon an eccentric bearing on the carrying
shaft and drives the barrel, which in this case is mounted concentrically upon the
supporting shaft, through a pinion that is also mounted upon the shaft and is geared
with the barrel through toothed wheels carried by a counter shaft the pinion
being connected with the corresponding friction ring through a pin and slot
connection.
Dated this 21st day of November 1893.
W. LLOYD WISE,
46, Lincoln's Inn Fields, London, W.C., Agent for the Applicants.
improvements in Hoisting and Lowering Apparatus.
We, CECIL GEORGE OWEN, and JOSEPH PETER BRAZIL, both of Vulcan Iron
Works, Avonside, Bristol, in the County of Gloucester, Engineers, 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 has for object to construct hoisting and lowering apparatus in a
simple, compact, and comparatively cheap form, and in such a manner that the
hoisting and lowering drum can be easily and quickly thrown in and out of
connection with a driving wheel or pulley, without stopping the latter, and in and
out of contact with a friction brake, block or strap.
In hoisting and lowering apparatus for this purpose according to this invention,
the hoisting and lowering barrel is driven from a driving wheel or pulley through
two frictional driving rings arranged one within the other and mounted upon
relatively adjustable eccentric bearings, the arrangement being such that when the
eccentric bearing or bearings carrying the one ring is or are partly rotated in one
direction relatively to the other eccentric bearing or bearings, the two friction rings
will be brought into frictional driving contact with each other so that the hoisting
and lowering barrel will be actuated from the driving wheel, and upon the said
bearing or bearings being then partly rotated in the opposite direction, the two
friction rings will be disengaged from each other so that the barrel will be thrown
out of connection with the driving wheel without stopping the latter, whilst by
further rotation of the said bearing or bearings in the same direction, a brake will
be applied to resist or control backward rotation of the said barrel under the action
of the load suspended therefrom. The two friction rings may be connected either
directly or indirectly with the barrel and driving wheel respectively.
As will be obvious hoisting and lowering apparatus according to this invention
can be constructed in various forms.
In the accompanying drawings,
Figs. 1 and 2 are respectively a central longitudinal section and a end elevation,
showing one construction of hoisting and lowering apparatus according to this
invention;
Fig. 3 is a detail view showing the relative position of the eccentric bearings
and
Fig. 4 is a diagram.
In this arrangement, 1 is a friction ring made as a tubular extension of the
hoisting and lowering barrel 2 and arranged to surround a friction ring 3 made as
a tubular extension of the driving pulley 4 which is grooved as shown to receive a
driving belt. The barrel 2 is mounted to rotate upon eccentrically arranged
bearings 5 formed on a carrying shaft 6 which is mounted in bearings carried by

page_text: standards or arms 7, 7ª on a bed plate or frame 8, and has fixed to it a weighted
lever 9 by which it can be partly rotated in either direction. The driving pulley
is mounted to freely rotate upon a sleeve bearing 10 that is eccentrically mounted
upon the said shaft and is fixed to the standard or arm 7 so that the said shaft can
when necessary, turn within it. This sleeve bearing is also arranged eccentrically
to the bearings 5 upon which the barrel is placed, so that when the said shaft is
partly rotated, the friction ring 1 attached to the barrel will be caused to approach
or recede from the ring attached to the driving pulley, according to the direction
in which the shaft is rotated. In the bed-plate or frame 8 and in close proximity
to the tubular extension or friction ring 1 of the barrel 2 is secured a block 11 of
wood adapted to serve as a fixed brake block against which the said tubular
extension or friction ring 1 will be brought when the shaft is turned sufficiently in
one direction.
As will be seen more clearly from the diagram Fig. 4, the arrangement is such
that if the parts are in the relative position shown in full lines in that figure the
friction rings 1 and 3 will be in frictional driving contact with each other so that
the drum 2 will be rotated by the pulley 4; that if the lever 9 be moved from the
position a to the position b, the two friction rings will be disconnected from each
other leaving the drum free; and, that if the lever be then moved into the
position c the exterior of the tubular extension or friction ring 1 will be brought
against the brake block 11 which then acts to retard movement of the drum.
Figs. 5, 6 & 7 are similar views to Figs. 1, 2 & 3 respectively, illustrating a
modified construction in which the driving pulley 4 is arranged to surround the
tubular extension or friction ring 1 so as to serve as the second friction ring; or it
may be provided with a tubular extension for that purpose, but the construction
shown is the more compact one.
The brake block 11 is arranged in proximity to
a cylindrical extension or ring 1 which is shown adjacent to 1 but may i desired
be provided on the other end of the barrel 2, the position of the block being, of
course correspondingly changed. In other respects the arrangement is similar in
construction and operation to that shown in Figs. 1, 2 and 3.
Figs. 8, 9 & 10 are similar views to Figs. 1, 2 & 3 respectively, illustrating
another arrangement in which the friction ring 1 instead of being connected
directly with the barrel 2, is mounted to rotate upon an eccentric bearing 5* on the
carrying shaft 6 and drives the barrel 2, which in this case is mounted concentrically
upon the said shaft, through a pinion 12 that is also mounted concentrically upon
the shaft and is geared with a toothed wheel 13 fast on the barrel 2, through
toothed wheels 14 & 15 carried by a counter shaft 16, the pinion 12 being connected
with the corresponding friction ring 1 by pins 17 that are fixed to the said friction
ring and work in radial slots 18 in a flange on the pinion so as to permit of the
adjustment of the said friction ring. In other respects the arrangement is similar
to that shown in Figs. 1, 2 & 3 and operates in the same way.
Having now particularly described and ascertained the nature of the said inven-
tion and in what manner the same is to be performed we declare that what we
claim is:
1. Hoisting and lowering apparatus in which the hoisting and lowering barrel is
driven from a driving wheel or pulley through two frictional driving rings arranged
one within the other aud mounted upon relatively adjustable eccentric bearings,
the arrangement being such that by suitably adjusting the position of the eccentric
bearing or bearings carrying one ring relatively to the bearing or bearings carrying
the other ring, the hoisting and lowering barrel can be brought into driving
connection with the driving wheel or pulley, or can be disconnected therefrom, or
can be brought into a position in which a brake will be caused to resist or control
its movement as set forth.
2. Hoisting and lowering apparatus of the kind referred to in the preceding
claim constructed and arranged substantially as hereinbefore described with

page_text: reference respectively to and shown in Figs. 1 to 4 inclusive; in Figs. 5 to 7
inclusive; and in Figs. 8 to 10 inclusive of the drawings annexed.
Dated this 16th day of August 1894.
W. Lloyd Wise,
CECIL GEO. OWEN.
JOSEPH P. BRAZIL.
46, Lincoln's Inn Fields, London, W.C., Agent for the Applicants.