IMPROVEMENTS IN AND APPERTAINING TO WINCHES, CRANES, AND OTHER LIKE HOISTING MECHANISM
Year: 1877

page_text: LETTERS PATENT to William Dent Priestman and Samuel Priestman, both of
Kingston-upon-Hull, in the County of York, Engineers, for the Invention of
"IMPROVEMENTS IN AND APPERTAINING TO WINCHES, CRANES, AND OTHER LIKE
HOISTING MECHANISM.”
Sealed the 5th June 1877, and dated the 29th March 1877.
PROVISIONAL SPECIFICATION left by the said William Dent Priestman and
Samuel Priestman at the Office of the Commissioners of Patents on the 29th
March 1877.
WILLIAM DENT PRIESTMAN and SAMUEL PRIESTMAN, both of Kingston-upon-Hull,
in the County of York, Engineers. "IMPROVEMENTS IN AND APPERTAINING TO
WINCHES, CRANES, AND OTHER LIKE HOISTING MECHANISM."
Our Invention relates to certain improvements in arranging the barrels or barrel
of winches, cranes, and other like hoisting mechanism (when such barrels or barrel
are driven by friction wheels), and whereby the barrels or barrel are made to cant,
or lift, or lower by the working or stroke of hand levers, or their equivalent, and
thus bring the friction driving wheels of the barrels or barrel into gear with the
driving wheels on the motion shaft.
For example, a winch constructed according to our Invention consists of two
winding barrels arranged side by side, or one above the other, working indepen-
dently with independent bearings, and driven by suitable friction wheels. The first
motion shaft carries the small or driving friction wheels, and may be kept con-
tinuously at work, while the barrels and large friction wheels are arranged to run in
loose sliding bearings, and can be canted, raised, or lowered at pleasure by a separate
lever in connection with each barrel, and under the control of one man behind the
winch or crane.
By canting or raising the barrels and their friction wheels by means of the levers,
the friction wheels are put into gear with the small friction wheels on the motion
shaft, and the winch is thereby worked and the weight lifted. By lowering the
barrels by means of the same levers, the friction wheels are thrown out of gear, and
by bearing upon a segment of wood or other suitable substance which acts as a break,

page_text: the winch is stopped. By holding the barrels intermediately by the same levers, the
winch unwinds.
It will be seen that by this arrangement of winch we can with the greatest ease
lift, lower, or break by the same levers.
This arrangement of winch is especially adapted to work self-acting lifting
buckets or clips which require two barrels with quick and easy power and break
motions.
Although we have described our Invention as applied to a double-barrelled winch,
it will be evident that it is also capable of being applied to winches, cranes, and
other like hoisting mechanism having double or single barrels, and whether driven
by hand, steam, or other power.
SPECIFICATION in pursuance of the conditions of the Letters Patent filed by
the said William Dent Priestman and Samuel Priestman in the Great Seal
Patent Office on the 24th September 1877.
WILLIAM DENT PRIESTMAN and SAMUEL PRIESTMAN, both of Kingston-upon-Hull,
in the County of York, Engineers. "IMPROVEMENTS IN AND APPERTAINING TO
WINCHES, CRANES, AND OTHER LIKE HOISTING MECHANISM."
Our Invention relates to certain improvements in arranging the barrels or barrel
of winches, cranes, and other like hoisting mechanism (when such barrels or barrel
are driven by friction wheels), and whereby the barrels or barrel are made to cant,
or lift, or lower by the working or stroke of hand levers, or their equivalent, and
thus bring the friction driving wheels of the barrels or barrel into gear with the
driving wheels on the motion shaft or into gear with breaks or a break.
For example, a winch constructed according to our Invention consists of two
winding barrels arranged side by side, or one above the other, working indepen-
dently with independent bearings, and driven by suitable friction wheels. The first
motion shaft carries the small or driving friction wheels, and may be kept con-
tinuously at work, while the barrels and large friction wheels are arranged to run in
loose sliding bearings, and can be canted, raised, or lowered at pleasure by a separate
lever in connection with ench barrel, and under the control of one man behind the
winch or crane.
By canting or raising the barrels and their friction wheels by means of the levers,
the friction wheels are put into gear with the small friction wheels on the motion
shaft, and the winch is thereby worked and the weight lifted. By lowering the
barrels by means of the same levers, the friction wheels are thrown out of gear, and
by bearing upon a segment of wood or other suitable substance which acts as a break,
the winch is stopped. By holding the barrels intermediately by the same levers, the
winch unwinds.
It will be seen that by this arrangement of winch we can with the greatest case
lift, lower, or break by the same levers.
This arrangement of winch is especially adapted to work self-acting lifting
buckets or clips which require two barrels with quick and easy power and break
motions.
Although we have described our Invention as applied to a double-barrelled winch,
it will be evident that it is also capable of being applied to winches, cranes, and
other like hoisting mechanism having double or single barrels, and whether driven
by hand, steam, or other power.
That our Invention may be clearly understood we have hereunto annexed a Sheet
of Drawings illustrative thereof marked with letters and figures of reference corre-
sponding with those in the following explanation. In all the Figures the same
letters of reference where they occur indicate the same or corresponding parts.

page_text: Figure 1 is a front elevation of a winch constructed according to our Invention;
Figure 2 is an end view of Figure 1.
Figure 3 is a side elevation of a single-barrel steam crane constructed according
to our Invention; Figure 4 is an end view of Figure 3.
Figures 5, 6, 7, and 8 are details of eccentric bearing and lever as applied to our
Invention, and shown in Figures 3 and 4.
Figures 9 and 10 illustrate a self-acting lifting bucket, to the working of which
our Invention is applicable.
Figure 11 illustrates a self-acting lifting fork, to the working of which our Inven-
tion is applicable.
Upon reference to Figures 1, 2, 3, and 4 of the Drawings it will be seen that the
winch and crane represented are similar in many respects to the ordinary hand
winch and steam crane. The main difference in the case of the winch shown at
Figures
1 and 2 is that instead of the ordinary spur gearing and barrel being used,
it is arranged according to our Invention with two barrels a, a', working indepen-
dently side by side with independent bearings b, 61, with separate friction wheels
c, c¹, and separate friction pinions d, d'. The shafts e, e¹, which carry the barrels
a, a, and the large friction wheels c, c', are made to work in loose sliding bearings
ff, which can be raised and lowered by the levers g, g², at pleasure, and which are
under the control of one man behind the crane or winch.
'
The main difference in the case of the crane shown at Figures 3 and 4 is that,
instead of the ordinary spur gearing and barrel being used, it is arranged according
to our Invention with the barrel a working in a loose eccentric bearing f, arranged
in connection with the lever g, so that the bearing f, which is eccentric, will raise or
lower the barrel a and the large friction wheel c, accordingly as the lever g is raised
or lowered.
The friction wheels c, c¹, of the winch shown in Figures 1 and 2 are provided
with a break h, h². The friction wheel c of the crane, shown at Figures 3 and 4, is
also provided with a break h.
The self-acting bucket, shown at Figures 9 and 10, and the self-acting fork, shown
at Figure 11, require two chains or their equivalent for working, one chain being
the lifting chain and the other the discharging chain. The lifting chain is attached
to the barrel i, and the discharging chain is attached to the sliding cross head j.
The barrels are connected by short chains to the eyes 7 of the cross head j.
In operation, by canting or raising the barrels a, a, and their friction wheels c, c',
by means of the levers g, gl, the friction wheels c, c', are brought into gear with the
friction pinions d, d, on the first motion shaft, and the winch is thereby worked,
and the chains or their equivalent wound on the barrels a, a¹. By lowering the
barrels a, a, by means of the same levers g, gl, the friction wheels c, c¹, are brought
out of gear with the pinions d, d', and by the wheels c, c¹, bearing upon the breaks h, li³,
the barrels a, a, are secured from unwinding. By holding the barrels a, a', by the
same levers g, g', intermediately between the friction pinions d, d, and the breaks
h, h', the winch unwinds.
The same arrangement singly applies to the crane, shown at Figures 3 and 4,
the lever g with its eccentric bearing acting in like manner to the levers g, g¹, and
the loose sliding bearings f, f, shown at Figures 1 and 2, the friction wheel c being
thrown into gear with the friction pinion & or with the break h by the action of
the lever g.
The operation of the winch, shown at Figures 1 and 2, when applied to working
self-acting lifting buckets or forks, such as shown at Figures 9, 10, and 11, consists
in connecting the main or lifting chain with the barrel i of the bucket or fork, and
winding it on the barrel of the winch. The cross head j of the bucket or fork is
connected by the discharging chain to the barrel a' of the winch. The action is
thus-That upon the bucket or fork falling in an open position upon the material
it has to lift, and the barrel a of the winch being set in motion, the bucket or fork
automatically closes and fills itself. It is lifted to the required height and position
by the barrel a of the winch. The barrel a' of the winch is at the same time

page_text: working and winding the slack of the discharging chain connected to the cross
head j. Upon the barrel a being stopped and the barrel a' continuing, the tension
is brought upon the discharging chain. The cross head j and its attendant parts
work up the slide on the bucket or fork, and the bucket or fork automatically opens
and discharges its contents.
Having now fully described and ascertained the nature of our said Invention, and
the system, mode, or manner in or under which the same is or may be used or prac-
tically carried into effect, we would have it understood that although Figures 9, 10,
and 11 illustrate a self-acting lifting bucket or fork to which our Invention is appli-
cable, it will be evident that our Invention is also applicable to the working of any
buckets or forks, or their equivalents having a similar action, of any shape, construc-
tion, or size; and we would also have it understood that our Invention is not
confined to the identical form of winch or crane shown in the Drawings; but what
we claim as our Invention is,-
First. Constructing or arranging the barrels of winches or cranes with loose
sliding or eccentric bearings, so that such barrels can be canted, raised, or lowered
at pleasure by a lever or its equivalent, and thrown into gear with a driving wheel
or break as required, as herein-before described, set forth, and illustrated.
Second. Constructing winches or cranes with two barrels, such as a, a¹, arranged
with sliding bearings, such as f,f, and levers, such as g, g', so that the barrels can
be thrown into gear independently with the motion wheels or with the breaks, or
held in an intermediate position as required, substantially as herein described or set
forth, and shown in Figures 1 and 2 of the Drawings hereto annexed, or any modi-
fication thereof.
Third. Constructing cranes or winches with a barrel, such as a, arranged with an
cccentric bearing, such as f, and a lever, such as g, so that the barrel can be thrown
into gear with the motion wheel or with the break, or held in an intermediate posi-
tion as required, substantially as herein described or set forth, and shown in Figures
3 and 4, and 5, 6, 7, and 8 of the Drawings hereto annexed, or any modification
thereof.
In witness whereof, we, the said William Dent Priestman and Samuel Pricst-
man, have hereunto set our hands and scals, this Eighteenth day of Sep-
tember, in the year of our Lord One thousand eight hundred and seventy-
seven.