Improvements in Lifts or Hoists.
Year: 1890

page_text: Date of Application, 4th Mar., 1890
Complete Specification Left, 4th Dec, 1890-Accepted, 10th Jan., 1891
PROVISIONAL SPECIFICATION.
Improvements in Lifts or Hoists.
DAVID EDWARDS Junr. Builder of 31 Glenroy Street Roath Cardiff in the County
of Glamorgan, do hereby declare the nature of my said invention to be as follows:-
To one end of an horizontal shaft or axis working in fixed bearings a pulley is fixed.
Over this pulley an endless rope or chain is passed. By drawing down one or the
other side of which endless rope or chain motion in one or the other direction is given
to the pulley or shaft. On the same shaft or axis is keyed a pinion cog wheel which
is geared to two spur cog wheels of the same or of different diameters, which wheels
are keyed to two horizontal shafts working in fixed bearings on each side of the
driving or first shaft. On the same shafts as the spur cog wheels are keyed are also
keyed two pulleys or sheaves one on each shaft and opposite each other. The said
pulleys or sheaves I make of the same or of different diameters.
Over the said pulleys or sheaves I pass a rope or chain which can be endless or
otherwise.
The said rope or chain to fall down between the said pulleys or sheaves. In the
loop formed by the said rope or chain falling down I place a carrying pulley working
loose on an axle. To the said axle an hook is attached from which the cage or
load is hung.
The rope or chain that falls from the outside of the pulleys or sheaves can work
loose or if endless the rope or chain from one pulley or sheave can be conducted over
a carrying pulley so that it will fall by the side of the other rope or chain falling from the
other pulley or sheave. In the loop thus formed can be placed a loose pulley working
on an axle to the said axle is attached an hook to which is hung a balance weight.
Or to the first shaft or axis before described instead of one pinion cog wheel I key
two pinion cog wheels. One of which pinion cog wheels is geared to a spur cog
wheel which is keyed to an horizontal shaft or axis working in fixed bearings on one
side of the driving or first shaft. To the same shaft or axis as is keyed the spur cog
wheel is also keyed a pulley or sheave. The other or second pinion cog wheel is
geared to a cog wheel which is keyed to a counter shaft or axis working in fixed
bearings. The said cog wheel which is geared to the second pinion cog wheel is
also geared to a spur cog wheel keyed to a shaft or axis working in fixed bearings.
On the said shaft or axis is also keyed a pulley or sheave. The said pulley or sheave
to be the same or different diameter to the other pulley or sheave. The shafts or axis's
to which the pulleys are keyed are fixed in a line with each other, so that the
pulleys or sheaves are side by side.
Over the said two pulleys or sheaves I pass an endless rope or chain. The said
rope or chain when passed over the pulleys or sheaves will form two loops falling
down on each side of the two pulleys or sheaves. In the first or inside loop I place
a carrying pulley working loose on an axle. To the said axle I attach a hook to
which hook the cage or load is hung. In the other or outside loop I also place a
carrying pulley working loose on an axle to the said axle I attach an hook to which is
hung the balance weight.
.
1000

page_text: COMPLETE SPECIFICATION.
Improvements in Lifts or Hoists.
DAVID EDWARDS Junr., Builder of 31 Glenroy Street Roath Cardiff in the County
of Glamorgan, 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 :-
Fig. 1 is an elevation and Fig. 2 a plan of an arrangement of my invention
for a hoist or gantry lift.
To one end of a horizontal shaft or axis a. a working in fixed bearings a pully b. b.
is fixed over the pully b. b an endless rope or chain is passed By drawing drawing
down one or the other side of which endless rope or chain, motion in one or the
other direction is given to the pully, or shaft.
On the same shaft or axis is keyed a pinion cog wheel c. c. which is geared to two
spur cog wheels d. d. and e. e. of unequal diameters, which wheels are keyed to two
horizontal shafts ff. and g. g. working in fixed bearings on each side of the driving
or first shaft a. a.
On the same shafts as the spur cog wheels f. f. and g. g are keyed, are also keyed
two pullys or sheaves h. h. and i. i. one on each shaft and opposite each other, and of
equal diameters. Over the said pullys or sheaves h. h. and i. i. I pass a rope or
chain j. which can be endless or otherwise.
The said rope or chain j. to fall down between the pullys or sheaves h. h. and i. i.
In the loop thus formed by the said rope or chain j. falling down I place a carrying
pully k. working loose upon an axle 7. To the said axle a hook m. is attached,
from which the cage or load is hung. The rope or chain that fall from the outside
of the pullys or sheaves h. h. and i. i. can work loose, or if endless, the rope or chain
from one pully or sheave can be conductted over a carrying pully so that it will fall
by the side of the other rope or chain.
Fig. 3 is an elevation and Fig. 4 a plan of an arrangement of my invention for a
warehouse lift or hoist where a cage and balance weight is used.
To one end of a horizontal shaft or axis a. a. working in fixed bearings, a pully b. b.
is fixed over the pully b. b. an endless rope or chain is passed. By drawing down one
or the other side of which endless rope or chain, motion in one or the other direction
is given to the pully or shaft.
On the same shaft or axis is keyed two pinion cog wheels c. c. and d. d. one of
which cog wheels d. d. is geared to a spur cog wheel e. e. which is keyed to a shaft
or axis f. f. working in fixed bearings on one sid of the driving or first shaft a. a. to
the same shaft or axis as is keyed the spur cog wheel e e is. also keyed a pully or
sheave g. 9.
The other pinion cog wheel c. c. is geared to a cog wheel h. h. which is keyed to a
counter shaft or axis i. i. working in fixed bearings.
The said cog wheel h. h. which is geared to the pinion cog wheel c. c. is also
geared to a spur cog wheel j. j. keyed to a shaft or axis k. k. working in fixed
bearings: On the said shaft or axis k. k. is also keyed a pully or sheave 1. 1. of
equal diameter to the pully or sheave g. g.
The shafts or axis f. f. and k. k. are fixed in a line with each other, so that the
pullys or sheaves g. g. and 1. 1. are side by side.
Over the said pullys or sheaves g. g. and l. l. I pass an endless rope or chain, the
said rope or chain when passed over the pullys or sheaves will form two loops falling
down on each side of the said pullys or sheaves.
In the first or inside loop I place a carrying pully working loose upon an axle, to
the said axle a hook is attached to which hook the cage is hung. In the other or
outside loop I also place a carrying pully working loose upon an axle, to the said
axle a hook is attached, to which hook the balance weight is hung.
Figs. 5 and 6 are elevation and plan of an arrangement of my invention for a pully
block lift.

page_text: nd
To a shaft or axis a. a. working in a frame b. b. is keyed a cog wheel c. c. une sau
og wheel c. c. is geared to a second cog wheel d. d. of a less diameter than the first
og wheel c. c. the second cog wheel d. d. is keyed to a shaft or axis e. e. working in
rame b. b. To the shafts or axis a. a. and e. e. are keyed two pullys or sheaves f. f.
of equal diameter and opposite each other. Over the said pullys f. f. and g. g.
pass an endless rope or chain h. so that it will form two loops i and j. In the loop i
place a carrying pully k. working loose upon an axle 1. to the said axle a hook m. is
attached to which is hung the load. The second loop j. is used for giving motion in
one direction or the other to the pullys or sheaves f. f. and g. g.
9.9.
Fig. 7 is an end elevation and Fig. 8 a front elevation of a different arrangement
of my invention for a pully block lift.
Over the
To a shaft or axis a. a. working in a frame b. b. is keyed a pully c. c.
said pully I pass an endless rope or chain, by drawing down one or the other side of
given to the shaft
which endless rope or chain, motion in one or the other direction
or axis a. a. To the same shaft or axis a. a. is also keyed two pinion cog wheels d. d.
and e. e. of unequal diameters, and being geared to two spur cog wheels f. f. and g. g.
also of unequal diameters, and working loose around a shaft or axis h. h. fixed in
frame b. b. Fixed to the sides of the two spur cog wheels f. f. and g. g. are two
pullys or sheaves l. 1. and j. j. of equal diameters and also working loose around the
shaft or axis h. h. Over the pullys or sheaves i. i. and j. j. I pass an endless rope or
In the loop of
chain k. and falling from opposite sides of the said pullys or sheaves.
one of the falls I place a carrying pully working loose upon an axis, to which axis a
hook is attached to which is hung the load.
Fig. 9 is an elevation of an arrangement of my invention for a pully block
lift. Where in place of a pinion and spur cog wheel, there is a worm and spur
arrangement.
On a shaft or axis a. is keyed a pully b. over the said pully I pass an endless rope
or chain, by drawing down one or the other side of which endless rope or chain,
motion in one or the other direction is given to the shaft or axis a. On the said shaft a.
a worm thread c. is cut, and geared to the said worm thread are two spur cog wheels d.
and e. of unequal diameters, which spur cog wheels are keyed to two shafts or axis f.
g. are also
and g. which are working loose in a frame h. On the same shafts f. and
keyed two pullys or sheaves i. and j. Over the said pullys or sheaves I pass an
endless rope or chain, to one of the loops formed by the rope or chain falling down is
attached a carrying pully working loose upon an axle to the said axle a hook is
attached to which hook the load is hung.
Fig. 10 is an elevation of an arrangement of my invention, where two worm threads
of different diameters are used.
To one end of a shaft or axis a. is keyed a pully b. over the said pully I pass
On the
O an endless rope or chain, by drawing down one or the other side of which endless rope
or chain, motion in one or the other direction is given to the shaft or axis a.
said shaft or axis a are cut two worm threads c. and d. of different diameters and pitch,
the said worm threads c. and d. being geared to two spur cog wheels e. and f. also of
unequal diameters, which spur cog wheels are keyed to two shafts or axis g. and h.
5 working loose in a frame i to the said shafts g. and h. are also keyed two pullys or
sheaves j. and k. Over the said pullys or sheaves j and k. I pass an endless rope or
chain 1. in the loop m. formed by the said endless rope or chain falling down between
the said pullys or sheaves j. and k. I place a carrying pully n. working loose upon an
p. to the said axle a hook q. is attached to which hook the load is hung.
50
axle
Fig. 11 is a side elevation and Fig. 12 a plan of an arrangement of my invention
for a derrick or crane winch.
One end of a shaft or axis a. a. is made square so that motion in one or the other
On the said
direction can be given by means of a handle to the shaft or axis a. a.
axis a. a. is keyed a pinion cog wheel b. b. which is geared to a spur cog wheel c. c
55 the said spur cog wheel being keyed to a shaft or axis d. d. working loose in a
The said spur cog wheel c. c. is also geared to a spur cog wheel f. f. o
the same diameter, the cog wheel f. f. being keyed to a shaft or axis g. g. workin
frame e. e.

page_text: in frame e. e.
On the said shafts or axis d. d. and 9. g. are also keyed tw
drums h. h. and i. i. of unequal diameters.
I now proceed to describe the manner in which my invention is performed.
Motion being given in one direction or the other to the first or
Fig. 1 also imparts motion to the two spur cog wheels d. and e. through the pinion
driving shaft a
cog wheel c.
The pully or sheaves i. and h. being keyed to the same shafts as are the
two spur cog wheels d. and e. are turned in the same direction, that is when the spu
cog wheel e. is turning upward or in a direction to raise the load, the spur cog wheel a
is turning downward or in a direction to lower the load. Now the spur cog
being smaller or of less diameter than the spur cog wheel d travels or turns at a
wheel
greater rate of speed than the spur cog wheel d. Thus when the whole is set in
motion the pully or sheave h. running at a greater rate of speed than the pully or
sheave i hauls or winds in more chain than the pully or sheave i. pays out, thus raising
the load suspended at the hook m.
When the lift or hoist is at rest the load acting through the pullys or sheaves h.
and i pull the two spur cog wheels d. and e. toward each other thus wanting to give
a contrary motion to the pinion cog wheel c. Thus the load pulling at opposite sides
of the pinion cog wheel c. sustains itself at any point.
power from the pully b. to the hauling or winding pullys or sheaves h. and i. is
Also the multiplication of
in ratio to the greater or lesser difference in the diameters of the said spur cog
wheels d. and e.
Thus if the diameter of the spur cog wheel e. were twelve inches, and the diameter
of the spur cog wheel d. were thirteen inches, that would give a multiplication
between those two wheels of thirteen to one.
In Fig. 3 and Fig. 4 the pullys or sheaves g. 9. and 1. 1. being side by side to give
the required contrary direction, that is when the pully l. . is turning upward or in a
direction for raising the load, the pully g. g. shall turn downward or in a direction
for lowering the load. To give this direction to the pullys g. g. and l. 1. when placed
side by side I have provided a counter shaft or axis i. i. keyed to which is a cog
wheel h. h. the said cog wheel h. h. being also geared to the pinion cog wheel c. c. and
to the spur cog wheel j. j. thus giving the required motion to the two sheaves g. g.
and 1. 1.
When motion is given to the whole through the first shaft or axis a. a. the spur
cog wheel j. j. being of a less diameter than the spur cog wheel e. e. will travel or turn
at a greater rate of speed than the spur cog wheel e. e. thus giving the same motion
to the two winding pullys or sheaves g. g. and 1. 1. The said motion being the same
as described in Fig. 1.
In Fig. 5 is an arrangement of any invention where the two spur cog wheels c. and d.
are connected directly together, the said two spur cog wheels being of different
diameters cause the two shafts or axis a. and e. to revolve or turn at different rates of
speed, thus imparting the same motion to the two pullys or sheaves f. and g. Thus
when motion is imparted to the whole through the rope or chain h. being drawn down
in one direction or the other, and the said rope or chain passing over the pully g
imparts motion to the said pully. The pully g being connected with the pully f,
through the
spur cog wheels d and c. imparts motion to that also, but at a less or 4
slower rate of speed. Thus when motion is given to the slack loop j in a direction
proper to raise the load, the pully g. winds in more rope or chain, then the pully f
pays out, thus raising the load-suspended at the hook m.
the load pulling at the outside of the pully g. and at the inside of the pully f. causing
When the whole is at rest
the two spur wheels d. and e. to pull against each other, thus suspending the load at 5
any point.
In Fig. 7 and Fig. 8 motion being imparted to the two pinion cog wheels d. and e.
through the shaft or axis a, imparts notion also to the two spur cog wheels f. and g.,
but at different rates of speed. Now the two pullys or sheaves i and j being connected
to the two spur cog wheels f. and g. also travel or turn at different rates of speed. The 5
pully i being connected to the lesser cog wheel travels or turns at a greater rate of
speed than the pully j-which is connected to the greater cog wheel a. Thus the pully i

page_text: winds in more chain than the pully j pays out, thus raising the load and suspending
it, as in Figs. 1 and 5.
In Fig. 9 motion being imparted in a direction proper to raise the load to the shaft
or axis a through the pully b, imparts motion also to the two spur cog wheels d. and e.
The two pullys and j. being keyed to the same shafts as are the two spur cog wheels,
also as motion imparted to them through the shaft or axis a. But the pully being
keyed to the same shaft as is the lesser cog wheel d travels or turns at a greater rate
of speed than the pully j which is keyed to the same shaft as is the greater spur cog
wheel e.
Thus the pully i winds in more chain than the pully j pays out, thus raising
the load and suspending it at any point, as described in Figs. 1 and 5.
In Fig. 10 motion being imparted to the shaft or axis a in a direction proper to
raise the load imparts motion also to the two cog wheels e. and but at different rates
of speed through the worm threads c and d being of different diameters.
Thus the two pullys j and k being keyed to the same shafts as are keyed the two
cog wheels e and fare also driven at different rates of speed. The pully k winding in
more chain than the pully ; pays out. Thus raising the load suspended at
in Figs. 1 and 5.
q as described
In Figs. 11 and 12 motion being given to the first shaft or axis a. a in a direction
proper to raise the load, imparts motion also to the two shafts or axis d. d. and g. g.
through the pinion cog wheel b. b. being geared to the spur cog wheel c. c., the said
cog wheel c. c. being in turn geared to the spur cog wheel f.f. The two drums h. h.
and i. i. being keyed to the same shafts or axis as are the two spur cog wheels c. c.
and f. f. also as motion imparted to them. Now the drum h. h. being of a greater
diameter than the drum i. i. winds in more rope or chain than the drum i. i. pays
out, thus raising the load, and suspending it at any point, as described in Figs. 1
and 5.
Lowering the load in all the arrangements before described, being effected by
giving a contrary motion, to that which is required for raising the load.
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.
1. The method of multiplying power (for the purpose of raising weights or loads)
by a combination of toothed wheels geared together and of different diameters
actuating two pullys sheaves or drums, so that the said two pullys sheaves or drums
revolve or turn at different rates of speed, the multiplication of power being in ratio
to the difference in the speeds at which the said two pullys sheaves or drums are
revolving or turning, or to the difference in diameters of the said toothed wheels
geared together.
2. The method of multiplying power (for the purpose of raising weights or loads)
by a combination of toothed wheels geared together and of equal diameters actuating
two pullys sheaves or drums of different diameters, the multiplication of power being
in ratio to the difference in diameters of the said two pullys sheaves or drums.
3. The method of multiplying power (for the purpose of raising weights or loads)
by a combination of toothed wheels geared together of different diameters actuating
two pullys sheaves or drums also of different diameters so that the said two pullys
sheaves or drums revolve or turn at different rates of speed, the multiplication of
power being in ratio to the different rates of speed at which the said two pullys sheaves
or drums are revolving or turning one with the other.
4. The combination of toothed wheels geared together and actuating two pullys
sheaves or drums, so that when the load or weight is suspended from the said two
pullys sheaves or drums, it will cause the two toothed wheels geared together to
revolve or turn against each other, thus sustaining the load or weight suspended from
the said two pullys sheaves or drums as described.
Dated this 2nd day of December 1890.