AN IMPROVED OVER-HEAD TRAVELLING JIB CRANE FOR FACILITATING THE LOADING AND DISCHARGING OF NAVIGABLE VESSELS. AND FOR LIFTING AND REMOVING HEAVY BODIES GENERALLY, PARTS OF WHICH IMPROVEMENTS ARE ALSO APPLICABLE TO OVER-HEAD CRAB WINCHES OR TRAVELLING JENNIES.
Year: 1864

page_text: LETTERS PATENT to Sampson Moore, of the North Foundry, Liverpool,
in the County of Lancaster, Millwright and Engineer, for the Invention
of "AN IMPROVED OVER-HEAD TRAVELLING JIB CRANE FOR FACILITATING
THE LOADING AND DISCHARGING OF NAVIGABLE VESSELS. AND FOR LIFTING
AND REMOVING HEAVY BODIES GENERALLY, PARTS OF WHICH IMPROVEMENTS
ARE ALSO APPLICABLE TO OVER-HEAD CRAB WINCHES OR TRAVELLING
JENNIES.
"
Sealed the 15th July 1864, and hated the 25th January 1864.
PROVISIONAL SPECIFICATION left by the said Sampson Moore at the
Office of the Commissioners of Patents, with his Petition, on the
25th January 1861.
I, SAMPSON MOORE, of the North Foundry, Liverpool, in the County of
Lancaster, Millwright and Engineer, do hereby declare the nature of the
said Invention for "AN IMPROVED OVER-HEAD TRAVELLING JIB CRANE FOR
FACILITATING THE LOADING AND DISCHARGING OF NAVIGABLE VESSELS, AND FOR
LIFTING AND REMOVING HEAVY BODIES GENERALLY, PARTS OF WHICH IMPROVEMENTS
ARE ALSO APPLICABLE TO OVER-HEAD CRAB WINCHES OR TRAVELLING JENNIES," " to
be as follows (that is to say):-
This Invention consists in applying an over-head jib crane to the recipro-
cating traversing scaffold of the apparatus known as the travelling jenny,"
and in so arranging the various parts of the apparatus that it may be worked
by hand or by a stationary steam or other motive power engine through an
DQ17

page_text: endless rope, or its mechanical equivalent, parts of which improvements
are also applicable to the actuation of "travelling jennies" when worked
by steam or other motive power stationary engine.
That the nature of these improvements may be the more readily understood
it
may be well to state that the ordinary "travelling jenny" consists of a
crab winch mounted on a carriage travelling on a pair of rails, carried upon a
platform or carriage mounted on two or more pairs of grooved wheels, which
travel on a pair of parallel rails laid on two parallel lines of sleepers placed
some distance: apart and at right angles to the transverse carriage, upon which
the crab winch carriage travels. These sleepers are supported on timber or
other framings some height from the ground, the crab winch being used to
elevate and remove stones and other ponderous bodies within the limits of
the framing supporting the rail sleepers, the stones or other heavy bodies
being lifted vertically by means of the crab winch directly from below, and
moved horizontally by moving the crab winch carriage or the scaffold by
which the weight is supported, and which operations have heretofore
generally been performed by hand power.
Now these improvements consist in mountinga jib crane upon the travelling
scaffold to enable weights to be lifted and carried beyond the limits of the
lines of rails'upon which the platform travels, and in so arranging the
various parts of the apparatus that the same may be worked by hand or by
a stationary steam or other motive power engine placed on the ground or
in any other convenient situation.
These improvements may be accomplished by mounting at each end of one
side of the framing which carries the rails upon which the reciprocating
scaffold travels, grooved pulleys on fixed bearings carrying an endless rope, one
of which grooved pulleys may be driven by a stationary steam or other motive
power engine through a driving band working over a pulley keyed on to the
axle of the grooved pulley carrying the endless rope, or its mechanical
equivalent. The upper fold of the endless rope is carried under a grooved
pulley on the fore part of the side of the travelling scaffold, which grooved
pulley is keyed on to a short horizontal transverse shaft revolving in fixed
bearings, and at the back of which grooved pulley and on the same shaft is
also keyed a friction wheel. The endless rope is then curved and carried over
the top of another grooved pulley mounted on a shaft parallel to the last
described, and which shaft is also fitted with another friction wheel. The
axle of this pulley and friction wheel revolves in fixed bearings in line
with and below the axle of the winding barrel of the winch.
The rope

page_text: is thence carried down under a grooved guiding pulley on the rear part
of the side of the travelling platform, and thence over the grooved pulley
on the reverse end of the stationary frame. Between the first and second
described friction wheels on the travelling scaffold is an intermediate friction
wheel mounted on the end of a transverse shaft, revolving in hanging bearings
which have a short oscillating motion for the purpose of bringing the friction
wheel in contact with either the first-described friction wheel on the shaft
which carries the grooved pulley, under which the endless rope passes, or
against the friction wheel immediately below or in vertical line with the
winch barrel on the axle of the grooved pulley over which the rope passes.
The transverse shaft on which this intermediate friction wheel is keyed
extends about two-thirds of the distance across the platform, and the inuer
end of which is fitted with a bevelled toothed spur wheel which gears into a
transverse bevelled wheel keyed on to a shaft mounted at a right angle, and
extending obliquely downwards from the last-described transverse shaft, and
which oblique shaft is fitted with a bevelled toothed spur wheel which gears
into a bevelled toothed wheel mounted on a transverse driving shaft, which
extends beyond the first pair of wheels upon which the scaffold travels, and
which shaft carries on each end a spur pinion wheel which gears into toothed
wheels keyed on to the axle of the running wheels. The bevelled toothed
wheel on the long transverse shaft is fitted with clutch gear, so that it may
may be thrown in or out of action. This long transverse shaft is also fitted
with a second bevelled toothed wheel and clutch gear, which toothed wheel
works into an horizontal bevelled toothed wheel on the lower end of a vertical
shaft, the head of which carries a second bevelled toothed wheel, into which
works a bevelled toothed pinion mounted on a horizontal axle, revolving in
fixed bearings, and which is fitted at one or both ends with a crank handle
for the purpose of actuating the stage by hand when the clutch gear of this
movement is locked, the handle (or handles) being turned in the direction
required for moving the stage either backwards or forwards, in which case
the other bevelled toothed wheel of the long transverse driving shaft being
disconnected by its clutch gear allows the shaft to revolve freely without
imparting or receiving motion from the last-mentioned wheel. The object
of mounting this intermediate friction wheel on hanging bearings is to allow
it to be oscillated and pressed against one or other of the friction wheels be-
tween which it is situated, so as to drive the scaffold backwards or forwards as
required, the intermediate wheel being brought up to the periphery of the
friction wheel in front or in rear thereof by means of a hand lever. In rear
wit

page_text: of the friction wheel, on the side of the centre of the carriage, is another
friction wheel, keyed on the end of a transverse shaft which is also mounted
on hanging oscillating bearings, so that it may be brought into contact with
the friction wheel on the shaft of the grooved driving pulley, over which the
rope passes, or be thrown backwards against a stationary break. The trans-
verse rocking shaft upon which this last-described friction pulley is keyed is
fitted at its inner end with tooth gear for actuating the winch when in contact
with the friction wheel for the purpose of lifting, and when thrown back
against the stationary break, fitted on the side of the travelling carriage in
rear thereof, by means of a hand lever, the operator will have perfect controul
over the descent of the weight lifted by the jib crane. The spur gear on this
shaft is so arranged that it may be thrown out of gear to allow the crab winch
to be worked by hand through crank handles in the ordinary way; or, if
preferred, the endless driving band, chain, or rope may be so arranged as to
actuate the various parts of the apparatus in either direction by carrying the
said rope across the transverse scaffold upon which the jib crane or crab
winch carriage travels in fourfold, so as to get the rope to travel twice in the
same direction, one fold of which runs on one side and the other on the
opposite side of horizontal friction driving wheels, carried on the winch
carriage and mounted on short vertical shafts having their bearings on
horizontal swinging brackets, so that they may be brought up to the endless
band on either side as required by means of hand levers worked from the
carriage of the crab winch. The short vertical shafts of the horizontal driving
pulleys are each fitted with a toothed pinion wheel, which gears into horizontal
toothed wheels keyed on to vertical driving shafts, from which the power is
conveyed in anyconvenient manner to actuate the various moving parts of the
apparatus in either direction. The endless band is prevented giving way
laterally by horizontal antifriction pulleys placed on the outside of the rope,
and which are carried on the frame of the winch; or, if preferred, the endless
driving rope may be carried across the transverse carriage upon which the
winch carriage travels in two folds only in place of fourfold, as described, by
arranging ne fold to run immediately above the other, and passing then
through suitable guides formed on vertical levers mounted on the winch
carriage, and having their fulcrums between the upper and lower fold of the
rope, by which arrangement the peripheries of the driving wheels may be
brought up to the upper or lower fold, and as each fold runs in an opposite
direction, the various moving parts of the apparatus may be actuated in either
direction by merely pressing the peripheries of the driving pulleys against the

page_text: band or rope, as by merely pressing the levers outwards the lower fold of
the rope will be brought into action, and if the levers be drawn inwards the
lower fold will be withdrawn and the upper fold brought into action, and by
keeping the levers perfectly vertical the driving rope will be out of play.
SPECIFICATION in pursuance of the conditions of the Letters Patent,
filed by the said Sampson Moore in the Great Seal Patent Office
on the 25th July 1864.
TO ALL TO WHOM THESE PRESENTS SHALL COME, I, SAMPSON
MOORE, of the North Foundry, Liverpool, in the County of Lancaster,
Millwright and Engineer, send greeting.
WHEREAS Her most Excellent Majesty Queen Victoria, by Her Letters
Patent, bearing date the Twenty-fifth day of January, in the year of our Lord
One thousand eight hundred and sixty-four, in the twenty-seventh year of
Her reign, did, for Herself, Her heirs and successors, give and grant unto me,
the said Sampson Moore, Her special licence that I, the said Sampson
Moore, my executors, administrators, and assigns, or such others as I, the
said Sampson Moore, my executors, administrators, and assigns, should at any
time agree with, and no others, from time to time and at all times there-
after during the term therein expressed, should and lawfully might make,
use, exercise, and vend, within the United Kingdom of Great Britain and
Ireland, the Channel Islands, and Isle of Man, an Invention for "AN IN-
PROVED OVER-HEAD TRAVELLING JIB-CRANE FOR FACILITATING THE LOADING AND
DISCHARGING OF NAVIGABLE VESSELS, AND FOR LIFTING AND REMOVING HEAVY BODIES
GENERALLY, PARTS OF WHICH IMPROVEMENTS ARE ALSO APPLICABLE TO OVER-HEAD
CRAB-WINCHES OR TRAVELLING JENNIES,' " upon the condition (amongst others)
that I, the said Sampson Moore, my executors or administrators, by an instru-
ment in writing under my, or their, or one of their hands and seals, should
particularly describe and ascertain the nature of the said Invention, and in
what manner the same was to be performed, and cause the same to be
filed in the Great Seal Patent Office within six calendar months next and
immediately after the date of the said Letters Patent.
NOW KNOW YE, that I, the said Sampson Moore, do hereby declare
the nature of my said Invention, and in what manner the same is to be
performed, to be particularly described and ascertained in and by the
following statement (that is to say):-

page_text: This my said Invention consists in applying an over-head jib crane to the
reciprocating traversing scaffold of the apparatus known as the "travelling
jenney," and in so arranging the various parts of the apparatus that it may
be worked by hand or by a stationary steam or other motive power engine,
through an endless rope or its mechanical equivalent.
دو
That the nature of these my said improvements may be the more readily
understood, it may be well to state that the ordinary "travelling jenny
consists of a crab winch mounted on wheels travelling on rails laid upon a
platform or carriage mounted on two or more pairs of grooved wheels, which
travel on a pair of parallel rails laid on two parallel lines of sleepers placed
some distance apart, and supported on timber or other framings some height
from the ground, the crab winch being used to elevate and remove latterally
stones and other ponderous bodies within the limits of the framing support-
ing the rails, the stones or other heavy bodies being lifted vertically by means
of the crab winch directly from below, and moved horizontally by moving the
crab winch latterally and the scaffold in the direction of the rails on the
top of the fixed sleepers, and which operations have heretofore generally
been performed by hand power.
Now these my said improvements consist in using a jib-crane in connection
with the crab winch upon the travelling scaffold, to enable weights to be lifted
and carried beyond the limits of the lines of rails upon which the transverse
platform travels, and in so arranging the various parts of the apparatus that
the same may be worked by hand or by a stationary steam or other motive
power engine placed on the ground or in any other convenient situation.
These improvements may be accomplished by mounting at each end of one
side of the fixed framing which carries the rails upon which the reciprocating
scaffold travels,grooved pulleys on fixed bearings carrying an endless rope,one
of which grooved pulleys may be driven by a stationary steam or other motive
power engine through a driving band working overa pulley keyed on to the axle
of the grooved pulley, carrying the endless rope (or its mechanical equivalent).
The upper fold of the endless rope is carried under a grooved pulley on the rear
part of the side of the travelling scaffold, which grooved pulley is keyed on to
a short horizontal transverse shaft revolving in fixed bearings, and at the back
of which grooved pulley and on the same shaft is also keyed a friction wheel.
The endless rope is then curved and carried over the top of another grooved
pulley mounted on a shaft parallel to the last described, and which shaft is
also fitted with another friction wheel. The axle of this pulley and friction
wheel revolves in fixed bearings in line with and below the axleof the winding

page_text: barrel of the winch. The rope is thence carried down under a grooved
driving pulley on the front part of the side of the travelling platform, and
thence over the grooved pulley on the fore end of the stationary frame. Between
the first and second described friction wheels on the travelling scaffold is an
intermediate friction wheel mounted on the end of a transverse shaft revolving
in hanging bearings, which have a short oscillating motion for the purpose of
bringing the friction wheel in contact with either of the first-described friction
wheels on the shafts which carries the grooved pulleys under which the endless
rope pisses, or against the friction wheel immediately below or in vertical line
with the winch barrel on the axle of the grooved pulley over which the rope
passes. The transverse shaft on which this intermediate friction wheel is
keyed extends about two-thirds of the distance across the platform, and the
inner end of which is fitted with a bevelled toothed spur wheel, which gears
into a transverse bevelled wheel keyed on to a shaft mounted at a right angle
and extending obliquely downwards from the last-described transverse shaft,
and which oblique shaft is fitted with a bevelled toothed spur wheel which
gears into a bevelled toothed wheel mounted on a transverse driving shaft,
which extends beyond the first pair of wheels upon which the scaffold travels,
and which shaft carries on each end a spur pinion wheel which gears into
toothed wheels keyed on to the axle of the running wheels of the transverse
scaffold. The bevelled toothed wheel on the long transverse shaft is fitted
with clutch gear, so that it may be thrown in or out of action. This long
transverse shaft is also fitted with a second bevelled toothed wheel and clutch
gear, which toothed wheel works into an horizontal bevelled toothed wheel on
the lower end of a vertical shaft, the head of which carries a second bevelled
toothed wheel, into which works a bevelled toothed pinion mounted on a
horizontal axle revolving in fixed bearings, and which is fitted at one or both
ends with a crank handle for the purpose of actuating the stage by hand when
so required, when the clutch gear of this movement is locked, the handle or
handles being turned in the direction required for moving the
stage either
backwards or forwards, in which case the other bevelled toothed wheel of the
long transverse driving shaft being disconnected by its clutch gear, allows the
shaft to revolve freely without imparting or receiving motion from the last-
mentioned wheel, or in lieu thereof a worm motion may be used. The object
of mounting this intermediate friction wheel on hanging bearings is to allow it
to be oscillated and pressed against one or other of the friction wheels between
which it is situated, so as to drive the scaffold backwards or forwards as
required, the intermediate wheel being brought up to the periphery of the

page_text: friction wheel in front or in rear thereof by means of a hand lever. In rear
of the friction wheel on the side ofthe centre of the carriage is another friction
wheel keyed on the end of a transverse shaft, which is also mounted on
hanging oscillating bearings, so that it may be brought into contact with
the friction wheel on the shaft of the grooved pulley over which the rope
passes, or be thrown backwards against a stationary break. The transverse
rocking shaft upon which this last-described friction pulley is keyed is
fitted at its inner end with toothed gear for actuating the winch when in
contact with the friction wheel for the purpose of lifting, and when back
against the stationary break fitted on the side of the travelling carriage in
rear thereof, by means of a hand lever, the operator will have perfect control
over the descent of the weight lifted by the jib-crane. The spur gear on
this shaft is also arranged that it may be thrown out of gear to allow the
crab winch to be worked by hand through crank handles in the ordinary way.
If preferred, the endless driving band, chain, or rope may be so arranged as
to actuate the various parts of the apparatus in either directions by carrying
the said rope across the transverse scaffold upon which the jib crane or crab
winch carriage travels in fourfold, so as to get the rope to travel twice in the
same direction, one fold of which runs on one side and the other on the
opposite side of the horizontal friction driving wheels carried on the winch
carriage, and mounted on short vertical shafts having their bearings on hori-
zontal swinging brackets, so that they may be brought up to the endless band
on either side, as required, by means of a hand lever worked from the carriage
of the crab winch. The short vertical shafts of the horizontal driving pulley
are each fitted with a toothed pinion wheel, which gears into horizontal
toothed wheels keyed on to vertical driving shafts, from which the power is
conveyed in any convenient manner to actuate the various moving parts of
the apparatus in either direction. The endless band is prevented giving way
latterly by horizontal antifriction pulleys placed on the outside of the rope,
and which are carried on the frame of the winch carriage; or, if preferred,
the endless driving rope may be carried across the transverse carriage, upon
which the winch carriage travels in two folds only in place of fourfold, as
described, by arranging one fold to run immediately above the other, and
passing them through suit ible guides formed on vertical levers mounted on
the winch carriage, and having their fulcrums between the upper and lower
fold of the rope, by which arrangement the peripheries of the driving wheels
may be brought up to the upper or lower fold of the driving band, and as
each fold runs in an opposite direction, the various moving parts of the

page_text: apparatus may be actuated in either direction by merely passing the peri-
pheries of the driving pulleys against the band or rope, as merely passing
the levers outwards the lower fold of the rope will be brought into action.
and if the levers be drawn inwards the lower fold will be withdrawn and
the upper fold brought into action, and by keeping the levers perfectly
vertical the driving rope will be out of play.
That this my said Invention may be the more readily seen and under-
stood, I have hereunto annexed Drawings illustrating an over-head jib-
crane constructed according to my improvements, like letters and figures
marked thereon being used to denote similar parts.
Figure 1 (Sheet 1) is a side elevation, and Figure 2 (Sheet 2) a back
elevation with the counterweight removed, and Figure 3 (Sheet 1) a partial
plan of one modification of my improved over-head jib-crane, drawn on a
scale of half an inch to the foot, and which is calculated to lift about four
tons. In this modification I have shown a worm wheel motion to be used
for reciprocating the transverse scaffolding.
A, supports, upon which is mounted B, longitudinal parallel sleepers, which
are shown broken off, and upon which is mounted C and C¹, parallel line of
rails, upon which travels D, grooved wheels, upon which the transverse scaffold
is mounted; E, body of the transverse travelling frame; F, the jib; G, stays;
H, counterweight; K, the endless rope, which passes under L, first rope
wheel, and over L', second rope wheel, and under M, grooved rope guiding
pulley, under which the endless rope passes round N, a grooved rope pulley
working on fixed bearings attached to the stationary frame B.
The endless rope K, which is shown broken off in the several Drawings,
passes round a second grooved pulley on the reverse end of the stationary
frame (B), which revolves in fixed bearings similar to the guide pulley (N),
and has attached to the shaft thereof a driving pulley, crank, or other gearing
for communicating motion thereto from a steam or other motive power engine.
The transverse horizontal shaft upon which the first and second rope wheels
L and L' are keyed are each provided with P and P¹, smooth driving
pulleys, which are keyed on to the axles thereof. Now it will be observed
that the endless rope K, travelling in the direction indicated by the arrows,
passing under the rope wheel L and over the rope wheel L', causes them to
rotate in opposite directions. Q is a friction driving pulley mounted on R, a
shaft mounted in hanging bearings, so as to admit of the friction driving
bulley Q to be brought up against the periphery of the friction driving wheels
P or P¹ by means of S, a hand lever, which upon being thrown forward

page_text: brings the peripheries of the driving pulleys P and Q into contact so as to
receive rotary motion from P, and which causes the transverse travelling
scaffold to travel in one direction through the action of t, a small mitre wheel
on oscillating shaft R, and which works into t¹, a mitre wheel on the upperend
of u, a diagonal shaft with a worm cut on its lower end, and which works into
v, a worm wheel keyed on to the rolling axle of the travelling wheels on the
rear end of the scaffold. When it is desired to reverse the motion, all that is
required is that the attendant should draw the lever S slightly backwards,
so as to bring the smooth driving pulley Q against the smooth driving
pulley P¹, which imparts motion in the opposite direction to that of P. W is
a smooth driving pulley like Q, and mounted on ✗, a transverse shaft
resembling R, being capable of having a slight oscillating motion imparted
thereto by Z, a hand lever. The shaft X forms the first motion shaft of the
winch, which may be of the ordinary or any other convenient description, and
to which I lay no claim to beyond the mode of applying the power thereto and
using it in combination with my improved driving gear. The winch may be
used by hand in the ordinary way when steam or other power is not convenient.
a is a stationary brake. When it is desired to elevate a load attached to
the hook of the crane the attendant takes hold of the handle of the lever Z
and presses or draws it forward so as to bring the smooth friction driving
pulley W against the periphery of the driving pulley P¹, which imparts motion
thereto, which is conveyed through the axle X to the crab winch. When the
load is elevated sufficiently high the attendant presses the lever Z in the
opposite direction, which throws the wheel W against the stationary brake a,
and by a slight pressure on the lever the load may be suspended until it is
desired to lower it, the attendant having perfect control of the descent thereof
in consequence of the stationary brake a. This shaft is fitted with an horizon-
tal lever to which is suspended a weight, which has the action of throwing
the driving pulley W against the stationary break a when not acted upon by
hand through the lever Z, which safeguard prevents the load descending
without the aid of the attendant. b, winch frame; d, a crank handle on
the side of the winch frame, to be used when the apparatus is to be actu-
ated by hand for the purpose of reciprocating the transverse carriage or
stage (E), and which gives motion to e, a mitre wheel keyed on the crank
axle, and and which gears into e¹, a mitre wheel on the head off, a revolv-
ing shaft, on the lower end of which is keyed g, a mitre wheel, which gears
into (t) a mitre wheel on the shaft R.
Figures 4 and 5 (Sheet 2) illustrates another modification of my improved

page_text: system for actuating over-head jib cranes,
travelling jennies," and other
hoisting apparatus. I may here remark, that there are six motions or
direction of motion required for the efficient working of over-head travelling
jib-cranes and "travelling jennies," the two first motions being used to
raise and lower the weight, the second two motions to move the carriage
or travelling frame longitudinally backwards and forwards, and the other
two to actuate the crab winch or "jenney" or over-head jib-crane back-
wards and forwards transversely, and which I accomplish by the arrange-
ment of grooved pulleys and toothed gear.
Figure 4 is a top view or plan, and Figure 5 is a partial side elevation of
the apparatus, which itself imparts two motions.
A is a vertical shaft on the head of which is keyed B, a grooved pulley,
and on the lower end of which is keyed C, a spur wheel, which gears into D,
a second spur wheel on the bottom of E, a vertical shaft which revolves in
fixed bearings attached to the crab winch frame and passes through and
forms the fulcrums of F, a forked lever in the ends of which the shaft A
rotates; G, the endless rope, which is carried in fourfold across the trans-
verse reciprocating scaffold, so as to allow two folds of the rope to run in
the same direction on opposite sides of the grooved wheels B, as indicated
by the arrows;
H, horizontal grooved wheels to prevent the rope deflecting
when pressed by the grooved pulleys B.
The action of this apparatus is as follows:--The spur wheels D gear into
toothed wheels which actuate the three several parts of the apparatus; that is
to say, the crab winch, longitudinal reciprocating transverse travelling frame
or carriage, and the other to the gear for moving the crab winch, "travelling
jenney, or over-head jib crane. All that is required to drive the several parts
in the direction required is that the attendant should take hold of the handles
on end of the levers and turn the grooved rope wheel against one or other of
the folds of the rope, according to the direction of the motion he requires.
Having now fully described and ascertained the nature of this my said
Invention, and how I believe the same may be best carried into practical
effect, I wish it to be understood that I do not confine myself to the precise
details, relative proportions or dimensions, as it will be readily seen that the
same may be considerably varied without departing from the Invention;
but what I claim is,―
Firstly, the construction of over-head travelling jib-cranes, actuated sub-
stantially in the manner and for the purposes herein-before described and set

page_text: Secondly, the general combination and arrangement of the several parts
of the apparatus herein-before described and set forth as applied to the
construction of over-head travelling jib cranes.
And, lastly, the peculiar arrangement of shaft, grooved pulleys, toothed
gear, levers, and wheels herein-before described and illustrated by Figures 4
and 5 on Sheet 2, substantially in the manner and for the purposes herein-
before described and set forth.
In witness whereof, I, the said Sampson Moore, have hereunto set my
hand and affixed my seal, this Twenty-third day of July, in the year
of our Lord One thousand eight hundred and sixty-four.
Witness,
WILLIAM WALKER,
of 44, Castle Street,
Liverpool.
SAMPSON (L.S.) MOORE.