Improvements in Hoisting Mechanism.
Year: 1899

page_text: Improvements in Hoisting Mechanism.
I, CHARLES WALLACE HUNT, residing at No. 11, Barker Street, West New
Brighton, in the County of Richmond, and State of New York, United States of
America, Manufacturer, do hereby declare the nature of this invention to be as
follows:-
1 make use of two hoisting drums with ropes or chains leading off to the article
to be raised, and these ropes or chains pass over pulleys so as to be led in the
proper direction.
I construct the two drums with gears upon the adjacent ends and place between
the drums, and upon the sanie shaft that supports the drums, a wheel carrying
pinions, that gear with the gears upon the ends of the drums, and I provide friction
appliances between one or more of the drums and the shaft, and provide for driving
either one of the drums by positive gearing, or by frictional gearing, and I also
provide frictional straps, or similar frictional devices, for the respective drums
and for the wheel that intervenes between the drums, the object of this con-
struction being, that when the power is applied to revolve the intermediate wheel
and its pinions, both drums can be simultaneously revolved, and in the same
direction, to wind up or let out the ropes or chains. If there is greater strain on
one drum than on the other, one drum can revolve faster than the other in conse-
quence of the pinions turning between the gears of the drums. If one of the drums
is held stationary by its friction appliances, and the wheel between is rotated,
the drum that is revolved will go faster than the intermediate wheel in consequence
of the pinions gearing at one side to the stationary drum, and at the other side to
the revolving drum. Where a positive acting gearing is applied to the wheel
between the drums, a clutch or coupling is used to connect or disconnect the same
and in one form the positive acting gearing is applied to friction wheels at the ends
of the drums, so that either drum can be rotated by the friction or allowed to
turn freely, when the friction is disconnected, and this allows for either drum
being held stationary by its friction band or driven by its.friction wheel; or one
of the drums can thus be rotated in the opposite direction to the other through the
intermediate wheel and gearing, when the driving frictional device is disconnected
or the central wheel and its pinions can be held by the friction, and one drum
be rotated in one direction, while the other drum is being rotated in the other direc-
tion through the pinions. This gives great facility for hoisting or lowering by
allowing the same power to act to give motion to one drum in one direction, and
to the other drum in the other direction.
In applying the present improvement, 1 sometimes use the hoisting apparatus
with a vertical mast, and a swinging boom with the ropes or chains, passing
through blocks upon the swinging boom and by actuating the respective drums
and chains, or ropes, the article can be raised, and then swung around by drawing
upon one rope while the other one remains stationary, or is paid out.
Where this improvement is used with an overhead boom or track, a travelling
truck is applied thereon, and by manipulating the drums, the truck can be

page_text: drawn horizontally without raising or lowering the weight, or the weight can
be raised or lowered at any point upon the elevated track. The elevated track
may also be either horizontal or at an inclination, and when inclined, .one drum
can be made larger than the other if desired, so as to take up or pay out one
rope faster than the other.
When this hoisting apparatus is used in connection with a dredging bucket or
excavating bucket, of any well known character, a third hoisting drum can be used
with the aforesaid two drums, the rope or chain of the third drum passing around
the pulleys on the truck, and around a pulley upon the dridging bucket or
similar apparatus, so as to form a loop by passing over the pulleys on the
travelling truck, so that the pulley.on, the bucket or similar excavating device
or sustaining device, can travel in the loop of the third rope either backwards
or forwards, without being raised or lowered.
When this hoisting apparatus is applied to a boom with a truck upon the
boom, such truck can be moved either inwardly or outwardly upon the track
of the boom, and the ropes leading to the bucket or other hoisting apparatus
pass over the sheaves or pulleys upon the truck, and in order to allow for the
boom being moved out of the way of passing vessels, where the boom is at the edge
of a river, bay or dock, the boom is hinged near the middle and provided with
a guy to the outer end and with a rope for drawing up the hinge of the boom,
so that the outer end of the boom will fold downward, close against the support-
ing devices or mast of the boom, and the inner end of the boom is fastened by a
joint, so that the boom can be swung around horizontally, or the hinge of the
boom raised so as to fold the boom as aforesaid, and the track on the boom for
the truck is sometimes connected at the inner end with a stationary track, so
as to allow the truck to be run by the drums and ropes or chains aforesaid, along
upon the stationary horizontal track after leaving the track upon the boom.
This improvement allows the ropes or chains from the two drums to be
employed in a variety of ways in hoisting, conveying and delivering weights,
buckets or goods from one place to another and raising or lowering such articles
at will.
Dated this 10th day of April 1890
BREWER & SON,
London & Leeds,
Agents for the Applicant..
Improvements in Hoisting Mechanism.
I, CILARLES WALLACE HUNT, residing at No. 11, Barker Street, West New
Brighton, in the Borough of Richmond, City and State of New York, United States
of America, Manufacturer, 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:―
I make use of two hoisting drums with ropes or chains leading off to the article
to be raised, and these ropes or chains pass over pulleys so as to be led in the
proper direction.
I construct the two drums with gears upon the adjacent ends and place between
the drums and upon the same shaft that supports the drums, a wheel carrying
pinions that gear with the gears upon the ends of the drums, and I provide friction
appliances between one or more of the drums and the shaft and provide for driving
either one of the drums by positive gearing or by frictional gearing, and I also

page_text: provide frictional straps or similar frictional devices for the respective drums and
for the wheel that intervenes. between the drums, the object of this construction
being that when the power is applied to revolve the intermediate wheel and its
pinions, both drums can be simultaneously revolved and in the same direction
to wind-up or let out the ropes or chains. If there is greater strain on one drum
than on the other, one drum can revolve faster than the other in consequence of the
pinions turning between the gears of the drums.. If one of the drums is held
stationary by its friction appliances and the wheel between them is rotated, the
drum that is revolved will go faster than the intermediate wheel in consequence
of the pinions gearing at one side to the stationary drum and at the other side to
the revolving drum. Where a positive acting gearing is applied to the wheel
between the drums, a clutch or coupling is used to connect or disconnect the same
and in one form the positive gearing is applied to friction wheels at the ends of the
drums so that either drum can be rotated by the friction or allowed to turn freely
when the friction is disconnected and this allows for either drum being held
stationary. by its friction band or driven by its friction wheel, or one of the
drums can thus be rotated in the opposite direction to the other through the inter-
mediate wheel and gearing when the driving frictional device is disconnected or
the central wheel and its-pinions can be held by the friction and one drum be
rotated in one direction while the other drum is being rotated in the other
direction through the pinions. This gives great facility for hoisting or lowering
by allowing the same power to act to give motion to one drum in one direction
and to the other drum in the other direction.
In applying the present improvement, I sometimes use the hoisting apparatus
with a vertical mast and a swinging boom with the ropes or chains passing through
blocks upon the swinging boom and by actuating the respective drums and chains
or ropes, the article, can be raised and then swung around by drawing upon one
rope while the other one remains stationary or is paid out.
+
Where this improvement is used with an overhead boom or track, a travelling
truck is applied thereon, and by manipulating the drums, the truck can be
drawn horizontally without raising or lowering the weight, or the weight can
be raised or lowered at any point upon the elevated track. The elevated track
may also be either horizontal or at an inclination, and when inclined, one drum
can be made larger than the other if desired, so as to take up or pay out one
rope faster than the other.
or
When this hoisting apparatus is used in connection with a dredging bucket or
excavating bucket of any well known character, a third hoisting drum can be used
with the aforesaid two drums, the rope or chain of the third drum passing around
pulleys. on the truck and around a pulley upon the dredging bucket
similar apparatus, so as to form a loop by passing over the pulleys on the
travelling truck, so that the pulley on the bucket or similar excavating device
or sustaining device can travel in the loop of the third rope either backwards
or forwards without being raised or lowered.
When this hoisting apparatus is applied to a boom with a truck upon the
boom, such truck can be moved either inwardly or outwardly upon the track
of the boom and the ropes leading to the bucket or other hoisting apparatus
pass over the sheaves or pulleys upon the truck, and in order to allow for the
boom being moved out of the way of passing vessels where the boom is at the edge
of a river, bay or dock, the boom is hinged near the middle and provided with
a guy to the outer end and with a rope for drawing up the hinge of the boom
so that the outer end of the boom will fold donwnward close against the support-
ing devices or mast of the boom and the inner end of the boom is fastened by a
joint so that the boom can be swung around horizontally or the hinge of the
boom raised so as to fold. the boom as aforesaid, and the track on the boom for
the truck is sometimes connected at the inner end with a stationary track
as to allow the truck to be run by the drums and ropes or chains aforesaid along
upon the stationary horizontal track after leaving the track upon the boom.
SO

page_text: This improvement allows the ropes or chains from the two drums to be
employed in a variety of ways in hoisting, conveying and delivering weights,
buckets or goods from one place to another and raising or lowering such articles
at will.
In the drawing, Figure 1 is a sectional plan view illustrating the principal feature
of my improvement. Fig. 2 is a partial elevation of the central driving wheel
and one of the intermediate pinions. Fig. 3 shows straight gear connections
instead of bevel gears. Fig. 4 is a section with a diagrammatic illustration of an
apparatus in which drums may be used. Fig. 5 illustrates the gearing and wheel
between one drum and the other. Fig. is a general elevation illustrating the
application of my improvement. Fig. 7 is a cross section showing the boom at
or near the joint in the same. Fig. 8 is a plan of the parts shown in Fig. 7. Fig. 9
is an elevation illustrating the connection of the boom at the back or supporting.
end, and Fig. 10 is a diagrammatic elevation illustrating the boom as at the end of
a horizontal track. Fig. 11 is a general diagrammatic elevation illustrating
one of the applications of my improvement, and Fig. 12 is also a diagrammatic
elevation illustrating a modified application of the improvement. Similar letters
of reference refer to corresponding parts in all the figures of the drawings.
The shaft H is supported in suitable bearings, and it has around it the drums A
and B and also the wheels C, and there are gears de at the respective ends of the
drums A and B, which engage one or more pinions D, having their shafts or axes
supported in the wheel C, and there are friction-straps or equivalent devices L
and M around the respective barrels A and B, and these friction devices are to
be actuated by hand or in any suitable manner, such for instance, as by
levers L M¹.
In Figs. 1 and 2, the gears are represented as bevelled and in Fig. 3 the gears
are shown as straight, the pinions D D² on the wheel C engaging the gears de¹.
The operations correspond, and one form of gear is an equivalent of the other.
Upon the wheel C a suitable brake is applied, such for instance, as a brake-band
14 around the flange of the wheel C and a lever 15, by which the band can be
tightened or loosened. The shaft K is to be driven by suitable power-such for
instance, as a double-acting engine with cranks at opposite ends, such engine
being adapted to rotation in either one direction or the other.⚫
Referring to Figs. 1, 2 and 3, A is a drum with a gear wheel 18, at one end and
with a friction-clutch 30, to engage the end of the drum A, and upon the driving-
shaft K is a gear-wheel 17, engaging the gear 18, and a suitable device, such as
the lever 20, acting upon the axial pin, and a cross-key is employed for bringing
the friction clutch 30 into engagement with the drum A. The drum B is similarly
constructed for receiving the friction-clutch 25 upon the gear-wheel 24, and this
is brought into action by any suitable device, such as the lever 35, axial pin, and
cross-key, and upon the shaft K is a gear 22, and the intermediate gear or pinion 23
causes the wheel 24 to always revolve in the opposite direction to the gear-wheel 18.
Hence it will be apparent that if both the gears 18 and 24 are in frictional engage-
ment with the respective drums A and B, one wheel rotating in one direction and
the other in the other direction, they may be geared so as to run at the same or
different speeds, as desired; but when this connection is made the intermediate
pinions D, engaging the wheels d and e upon the respective drums, might interfere
with the proper movements given to the respective drums if the wheel C remained
in gear with the driving-shaft K, and to prevent one force acting against another,
any suitable disconnecting device is advantageously provided for the pinion I upon
the driving-shaft K, which disconnecting device may be a sliding clutch 31,
actuated by a hand-lever, or any equivalent mechanism may be employed for
this purpose.
I have represented the one driving-shaft K for all of the respective_gear-
wheels; but I do not limit myself in this particular, as the driving-shaft K may
only actuate the gear-wheels 17 and 22 and a separate pinion and motor may
be applied to give motion to the wheel C, as indicated by the dotted lines at 33,

page_text: Fig. 3; but usually it is preferable to employ but one driving-shaft, as the
coupling at 31 can be made to disconnect the pinion with facility from the
driving-shaft K.
If the wheel C is revolved by the power, the pinions D, that are carried around
with the same, will act upon the gears and rotate the drums A and B, the fric-
tional devices for the same being slackened, and the drums can either wind up
or pay out the ropes or chains, according to the direction of rotation, and if the
strain upon the respective ropes is uniform the drums will rotate at the same
speed, and if the strain is not uniform, either the brake L or M may be made
use of upon the drum where the strain is least to cause uniformity in the action of
the drums, or, if desired, either drum can be held stationary by the brake L or M,
the other drum being rotated at an increased speed in consequence of the action of
the gears D.
The drum A may be rotated by the action of the gear-wheel 18 and the frictional
device 30, the lever 20 being made use of in applying the frictional device in
driving said drum. During this time if the clutch 31 is disconnected the wheel C
will be loose and the drum B can be controlled by the lever M' and brake as the
rope or chain may pull off same.
While the clutch 31 is disconnected and the wheel C loose, the drum B can be
revolved by the frictional device 25, controlled by the handle 35, and in this
case the intermediate pinion 23 will cause the drum B to rotate in the opposite
direction to the drum A.
If desired, the brake 14 can be applied to the wheel C by the lever 15, the clutch
31 being disconnected, and in this position power can be applied to either the
drum A or the drum B by the frictional connection 30 or 25, and if the power is
applied to the drum A. the drum B will rotate in the reverse direction, and if the
power is applied by the frictional device 25, to the drum B the frictional device 30
should be released and the drum A will be revolved in the opposite direction to the
drum B by the pinions D. By this arrangement of gearing and frictional connec-
tions either drum can be rotated by the connections to the driving-shaft K or both
drums can be driven by connections to the driving-shaft K, and the intermediate
pinions, when the wheel C is loose, will have no action in regulating the speed of
the drum, and the drums can both be disconnected from the driving mechanism
and controlled by their respective brakes, and the drums can be rotated by the
pinions 1), wheel C, and pinion I when the latter is coupled to the driving-shaft,
and the relative speeds of the drums can be controlled by the respective brakes,
so that the action of the respective drums and the direction of rotation are easily
controlled by the attendant.
If the power is being applied by the wheels I and C, the hoisting or lowering
action can be modified by applying power to either drum A or B through the
friction-clutches and the gearing connecting them to the shaft K, because the
direction of rotation given to either the drum A or the drum B may act to lessen
or accelerate the motion that the drum might otherwise receive from the
gearing I C.
If the wheel C is loose, the drums A and B are left entirely under control
of the frictional driving and stopping devices of the respective drums.
In the form shown in Figs. 4 and 5 two drums A' B are made use of and an inter-
mediate wheel C and bevel gearing 1) connecting the said drums, and one drum B
is secured upon a shaft H. and receives motion in either one direction or the other
from à driving shaft K and hoisting engine or motor by a pinion 22 engaging teeth
16 on a flange at one edge of said drum, and the other drum A is loose upon the
shaft, and a friction device 37 brought into engagement by a lever 20 is employed
to connect the second drum A at will with the main shaft H, or to allow the said
shaft to run freely and separately.
When the said friction device is employed to connect the second drum to the
shaft, both drums can be turned together by the motive power in either direction
for either hoisting
or lowering, because the intermediate wheel C and the bevel

page_text: gearing D all go around together with the shaft H; but if the intermediate wheel C
is held in a fixed position one drum will turn in one direction and the other drum in
the other direction, thereby adapting the hoisting apparatus to drawing in one
rope B and simultaneously paying out the other rope A at the same or a different
speed, according to the respective sizes of the drums, and when the intermediate
wheel and gearing are allowed to turn unrestrained, the first drum only will be
under the control of the power; and the second drum A can run down, or the
rope or chain Al pay off from the same at any desired speed..
In this device the friction-band L, or a similar device, and a lever L¹, are
employed to give friction to the drum A whenever required, so that the same may
be held stationary or allowed to revolve, at the same speed as the shaft H, or at a
different speed or in a reverse direction, according to the power applied to the same
or to the weight N that has been raised and is being lowered. The same friction
device is applied to the wheel.C, namely, the band-14 surrounding such wheel,
and having a lever 15 by which the band can be tightened or loosened to apply or
remove the friction in operating the device. The drum A being free to revolve
upon the shaft, should be held in position by suitable collars thereon, so as to
prevent endwise movement and keep the gears de properly in mesh with the
pinions D.
By this improvement a weight can be drawn up by a double. tackle to any
desired height beneath a truck, the two barrels revolving in the same direction
and acting through ropes or chains A¹ 13' for the lifting of the weight; but should
there be a horizontal or an inclined boom, carrying upon it a truck and a chain or
rope passing over pulleys or sheaves to the article to be raised, the rope or chain
from the drum B passing direct to the bucket or weight N and the rope or chain A¹
passing around the pulley at the lower or distant end of an elevated track; the two
ropes will be pulled on at the same time and to the same extent; hence the
weight will be raised vertical to any desired height, after which, by clamping the
wheel C to hold it stationary and disengaging the friction device 37, the drum B
will continue to act through the rope or chain B¹ and the rope or chain A¹ will be
moved in the opposite direction-that is to say, if the drum B is being used for
hoisting, the drum A will simultaneously lower upon its rope or the reverse, and
in accomplishing this object the wheel C and the bevel-gears will continue to
revolve with the drum B, or else the wheel C will be held stationary by the
brake 14 15 and the drum A receive a reverse motion in consequence of the inter-
mediate connection by the pinions D). If during this time the rope or chain A¹
is to be held stationary, the friction-band 14 or the friction disk 37 and lever are
thrown out of action and the friction-band L brought into action to, control the
downward movement of the apparatus in lowering.
In the application of the aforesaid means, as shown in Figs. 6 to 10 inclusive,
the boom is made in parts E2 E hinged together, so that by lifting the middle
portion E2 of the boom, the outer end E3 is allowed to drop and swing downward
and fold; thereby bringing the boom inward and out of the way. I usually make
the boom with two track rails so that the truck Q can run upon such track as the
bucket is drawn inward for the delivery of the load, or moved outward so as to
descend into the boat or car from which the material is to be removed.
The tower or derrick portion of the apparatus is to be of any desired character.
I have represented a framework at A, a chute or bin at B and C indicates a floor
upon which a railway car D³ can be applied for receiving the material that is
drawn up. The boom E2 is connected at the back end 43, so that it can be swung,
and there is a guy-rope, chain or rod F2 from the outer end of the boom extending
up to the top or apex of, the framework A2, and at 44 there is a joint in the boom
between the respective parts E E that allows the said parts to be drawn upward at
the joint by ropes or chains 45 into the position indicated by dotted lines, in Fig. 6,
in which position the outer end of the boom is swung downward as the joint 44 is
drawn upward, and in consequence of the peculiar proportion of the parts as repre-

page_text: .
sented, the outer portion of the boom, when swung down, occupies a nearly. vertical
position, as indicated by said dotted lines.
It will be apparent that the connection 43 between the boom and the stationary
portion of the derrick, is advantageously made so that the boom may have a
horizontal movement as well as a vertical folding movement, as the center part
of the boom is drawn up, and with this object in view, the connection at 43 may be
a universal joint or preferably a horizontal pivotal connection to a vertical
piece having trunnions on the end, or a bolt through it, as represented, especially
in Fig. 9, so that the boom can be swung laterally or horizontally upon the
vertical pivot, and when the boom is folded, the joint will turn at the end of the
boom. The joint 44 between the two parts of the boom is preferably made with
hinges upon horizontal pins, and where the boom is made of two parts so as to have
upon it track bars, as shown in Fig. 10, for a truck Q, two hinges are required, as
illustrated in Figs. 7 and 8, the hinges being in line with each other, and the lower
end of the rope or chain 45 may connect to a bridle or stirrup passing across over
the boom and truck to the outside of the joint hinges. The hoisting apparatus for
the ropes or chains is to be of the character previously described.
The joint at the inner end of the boom can be made to hang from a pivot
sufficiently high 'to allow the truck to run beneath it, the stirrup and pivot allow-
ing for the horizontal motion of the boom, but the separate tracks E and P are
to be pivoted to the stirrup, as illustrated in Fig. 10, so that the joint and
the boom may be drawn up to allow the outer end of such boom to swing downward
and out of the way when not in use.
In Figs. 11 and 12, showing the application of the device, I combine with the two
hoisting drums A and B, a third drum F and a rope or chain 8 passing over and
around pulleys 9; 10 and 11 and having a pendant loop passing over sheaves or
pulleys 26 and 27 upon the truck Q and having within the pendant loop a sheave
or wheel-12 that is connected with the bucket or article N to be raised or lowered.
The chain or rope A¹ from the drum A passes over the guide pulleys 13. then over
the pulley 27 on the truck Q and thence to the drum 4 of the bucket N, and the
chain or rope B¹ from the drum B, passes over the pulleys 38 and 39, and thence
over the pulley 26 on the truck Q to the bucket N.
The elevated track P may be rigid or it may be a wire rope or other structure or
a boom that is either horizontal or more or less inclined and upon this the truck Q
is supported, the same having wheels running upon a track and the double pulleys 26
and 27 for the ropes or chains A¹ B' and 8. The bucket N is shown as having
a frame 2 and segmental scoops 3 and a drum 4 that acts in connection with the
chains A 13 in opening and closing the scoop.
It will now be understood that in the form represented in Fig. 11, the rope
or chain B serves to open the bucket and the rope or chain A¹ to close and to
hoist the same, and when both of the drums A and B are acted upon simultaneously
the ropes or chains A and B will draw the bucket up vertically and the rope or
chain 8, is to be wound upon the drum F, so as to prevent looseness, and if the
rope A is drawn upon more rapidly than the rope B¹ the bucket will be raised
diagonally, and after being raised to the desired point the drum F can remain
stationary and the weight or bucket can be moved outwardly or inwardly to any
desired place, the loop of the rope 8 passing below the sheave 12 remaining
substantially quiescent while the said sheave overruns the loop to any desired place.
Where a tripping-bucket is made use of, the rope A¹ can be employed for
hoisting the same and the rope B1 for causing the bucket to be tripped or for
allowing the bucket to be hoisted diagonally in one direction or the other,
and the same operation can be performed when any other article than the bucket
is being hoisted, and where a bucket is made use of it can be unlatched or tripped
at any desired point in raising the same by the trip coming in contact with the
truck or track or with any other disconnecting device.
Where the rope 8 is double and passes around the stationary pulley 11 at the

page_text: distant end of the track, the drum F can be of the same size as the drums A B
and revolve with them upon the shaft H and the loop of the rope 8, that passes
below the sheave 12, will be taken up, so as not to hang loosely; but where the rope
or chain 8 is single, as shown in Fig. 12, with one end attached at 46, in a position
corresponding generally to the sheave 11, Fig. 11, then the drum F should be
twice the size of the drum B if receiving motion directly from the shaft H, or said
drum can be rotated by an independent connection to the motive power.
It will be apparent that if the drum B is revolved in either one direction or the
other and the wheel C held by the friction device, the drum A will revolve in the
opposite direction to the drum B, and one rope will be paid out as the other is
wound up, and in so doing the weight will be moved in one direction or the other
along with the truck, and when the drum A is connected to the motive power
through the friction device 37, said drum may receive a direct motion from the
power in either one direction or the other, and the same is true in regard to the
drum F, and it may be connected with the shaft H by the friction device 40.
so as to revolve with the shaft, or it may be loosened so that the drum revolves as
the rope is drawn off the same. By this construction I am enabled to
move the weight substantially in any direction and to any desired point and
discharge the same automatically, and the rope or chain 8 allows the ropes or chains
A¹ or B¹ to be drawn on or paid out as may be desired in moving the weight without
either raising or lowering that weight in consequence of the pulley 12 overrunning
the loop of the rope or chain 8.
It is usually necessary to have the sheaves 9, 10, 13 and 38 to cause the ropes to
lead to the respective drums; but some or all of these may be dispensed with,
according to the location of the drums in respect to the other parts.
As a means for acting upon the friction brakes or straps L, 14 and 41, I have
represented levers L¹, 15 and 42. A hoisting apparatus having the features herein
described is available in raising or lowering or moving an article in almost any
direction, according to the lead of the ropes and the track and truck made use of
in connection with such hoisting apparatus.
Having now particularly described and ascertained the nature of my said
invention, and in what manner the same is to be performed, I declare that what
I claim is:-
:
—
First A hoisting apparatus comprising two drums and their ropes leading to
the article to be raised or lowered, gear-wheels upon the respective drums and
intermediate pinions that connect said gears and a wheel carrying said pinions,
a driving mechanism for the wheel and a hand-controlled device for connecting
the wheel to the driving mechanism, a friction-brake for holding one of the
drums, hand-controlled frictional mechanism for connecting each of the drums with
the driving device, substantially as set forth.
Second: A hoisting apparatus comprising two drums and their ropes leading to
the article to be raised or lowered, gear-wheels upon the respective drums and inter-
mediate pinions that connect said gears and a wheel carrying such pinions, a
driving mechanism for the wheel a hand-controlled frictional mechanism for
connecting the driving mechanism to either of the drums, substantially as set
forth.
Third: A hoisting apparatus comprising two drums and their ropes leading to
the article to be raised or lowered, gear-wheels upon the respective drums and
intermediate pinions that connect said gears and a wheel carrying such pinions,
a driving mechanism for the wheel a hand-controlled frictional mechanism for each
drum for connecting the driving power therewith at will, substantially as set forth.
Fourth A hoisting apparatus comprising two drums and their ropes leading to
the article to be raised or lowered, gear-wheels upon the respective drums and
intermediate pinions that connect said gears and a wheel carrying such pinions,
a driving mechanism for the wheel, a hand-controlled frictional mechanism
for each drum for connecting the driving power therewith at will, and a hand-

page_text: controlled brake for applying a detaining friction at will to either of the drums,
substantially as set forth.
Fifth A hoisting apparatus comprising two drums and their ropes leading to
the article to be raised or lowered gear-wheels upon the respective drums and
intermediate pinions that connect said gears and a wheel carrying such pinions,
a gear-wheel and driving-shaft for driving the wheel that carries the pinions and
a hand-operated clutch for disconnecting or connecting the wheel from the driving-
shaft, and a brake for holding the wheel that carries the pinions when disconnected
from the driving mechanism, substantially as set forth.
:
Sixth A hoisting apparatus comprising two drums and their ropes leading to.
the article to be raised or lowered, gear-wheels upon the respective drums and
intermediate pinions that connect said gears and a wheel carrying such pinions,
a gear-wheel and driving-shaft for driving the wheel that carries the pinions and
a hand-operated clutch for disconnecting or connecting the wheel from the driving-
shaft, and a hand-controlled brake for holding the wheel carrying the pinions at
will when disconnected from the driving-shaft, substantially as set forth.
Seventh A hoisting apparatus comprising two drums and the gears and pinions
for connecting them and a wheel carrying such pinions, a driving mechanism,
a clutch connection between such driving mechanism and the wheel carrying such
pinions, a frictional connection between each drum and the driving mechanism, a
hand-controlled brake for holding the wheel that carries the pinion, substantially
as set forth.
Eighth A hoisting apparatus comprising two drums and the gears and pinions
for connecting them and a wheel carrying such pinions, a driving mechanism, a
clutch connection between such driving mechanism and the wheel carrying such
pinions, a frictional connection between each drum and the driving mechanism, a
hand-controlled brake for holding the wheel that carries the pinions, and hand-
controlled brakes for applying a detaining force to either of the drums, substan-
tially as set forth.
Ninth The combination with a drum and shaft connected together and means
for revolving the drum and shaft in either one direction or the other, of a second
drum upon the shaft, gears on the respective drums, an intermediate wheel and
pinion carried by the same, and a mechanism for connecting or disconnecting the
second drum and the shaft, substantially as set forth.
Tenth The combination with a drum and gear-wheel and a shaft connected and
revolving together, of a pinion for driving the gear-wheel, drum and shaft, a second
drum upon the shaft, gearing for connecting the two drums and a friction device
for connecting the second drum to the shaft, substantially as set forth.
Eleventh The combinatiin with a drum and shaft connected together and means
for revolving the drum and shaft in either one direction or the other, of a second
drum upon the shaft, gears on the respective drums, an intermediate wheel and
gear carried by the same, and a mechanism for connecting or disconnecting the
second drum and the shaft, and a friction mechanism for. controlling the second
drum when disconnected from the shaft, substantially as set forth.
Twelfth The combination with the drum and shaft and means for revolving
them together, of a second drum loose upon the shaft, a gear upon each drum, an
intermediate pinion, a wheel carrying such pinion, a friction mechanism for
holding the wheel and a friction mechanism between the second drum and the
shaft, substantially as set forth.
Thirteenth The combination with a. stationary support, of a boom having two
lines of rail and an opening between them and connected together at the outer
end, a guy rope or chain for suspending this outer end and a hinge for connecting
the inner end to the stationary support, the boom being divided and hinges for
connecting the respective parts of the boom together and means for moving the
joint and the boom upwardly in folding said boom, substantially as set forth.
Fourteenth The combination with a stationary support, of a boom having a
track thereon and composed of two parts, a guy rope or chain to the outer end of

page_text: the boom, a hinge for connecting the two parts of the boom and means for drawing
the joint thus formed upward so that the outer end of the boom can swing
downward in folding the boom out of the way, and hinges at the back end of the
boom for connecting the same to the stationary support and on which hinges the
inner part of the boom can be folded upwardly or the boom swung horizontally
while in use, substantially as set forth.
Fifteenth The combination with a stationary track and a car and pulleys and
ropes or chains thereon adapted to raise and suspend a weight, of a boom having
a track that is a continuation of the stationary track, a support for the outer end
of the boom, a hinge for connecting the inner end of the boom at the stationary
track, and a joint between the two parts forming the boom and means for drawing
up the latter joint to fold the boom, substantially as specified.
Sixteenth "The combination with a stationary support, of a boom, a joint
for connecting the boom to the stationary support and upon which the boom can
be swung horizontally or folded upwardly, means for sustaining the outer end
of the boom, a hinge for uniting the two parts of which the boom is composed,
means for moving the hinge upwardly in folding the boom, substantially as set
forth.
Seventeenth The combination with two drums and mechanism for moving the
same, ropes passing from the drums, an elevated track and truck thereon and
sheaves on said truck over which the said ropes pass to the weight to be raised,
of a third rope, sheaves upon the truck over which the third rope hangs as a loop
and a sheave within said loop and connected to the article to be raised, and a drum
by which this third rope is drawn up or allowed to pass off, and mechanism for
actuating the respective drums, substantially as set forth.
Eighteenth The combination with two drums, their ropes and actuating
mechanism for the drums, of an elevated track, a truck upon the track and sheaves
on said truck over which the said ropes pass from opposite directions, a sheave
near the end of the track around which one of the ropes passes, a third rope passing
over sheaves upon the truck and hanging in the form of a loop, a sheave within
said loop and connected to the weight to be raised, a sheave at or near the end of
the track around which the third rope passes, a drum to which the two ends of the
third rope are connected, and mechanism for actuating said drum, substantially as
-set forth.
Nineteenth The combination with two drums, their ropes and actuating
mechanism for the drums, of an elevated track, a truck upon the track and sheaves
on said truck over which the ropes pass from opposite directions, a sheave
near the end of the track around which one of the ropes passes, a third rope passing
over sheaves upon the truck and hanging in the form of a loop, a sheave within
said loop and connected to the weight to be raised, a sheave at or near the end of the
track around which the third rope passes, a drum to which the two ends of the third
rope are connected, and a friction device for actuating the drum, substantially as
set forth.