IMPROVEMENTS IN CRANES FOR QUARRYING AND MINING PURPOSES
Year: 1882

page_text: LETTERS PATENT to Marshall Jones Brooks of Sunnyside, Rawtenstall in the
County of Lancaster and John Henry Spencer of Crawshaw Booth in the
same County for an invention of "IMPROVEMENTS IN CRANES FOR QUARRYING
AND MINING PURPOSES.
PROVISIONAL SPECIFICATION left by the said Marshall Jones Brooks and
John Henry Spencer at the Office of the Commissioners of Patents on the
8th July 1882.
MARSHALL JONES BROOKS of Sunnyside Rawtenstall in the County of Lancaster
and JOHN HENRY SPENCER of Crawshaw Booth in the same County. "IMPROVE-
MENTS IN CRANES FOR QUARRYING AND MINING PURPOSES,"
Our Invention relates to Jib or Derrick Cranes with vertical uprights or beams.
the mechanism of which is driven by power derived from a separate independent
motor at any convenient distance from the cranes for raising stone and other
purposes, our object being to so communicate motion to the winding gear that the
crane may be swung round when at work without interfering with the driving
mechanism. We fit on the axis of the upright of the crane a plain or grooved
pulley to which motion is communicated by a band or rope from a driving pulley
driven by a steam engine or otherwise; we place the pulley at the top or at the
foot of the axis of the upright or vertical beam or at an intermediate position, or
we fit on the axis of the beam a spur or bevel wheel which gears into and receives
motion from a wheel on an independent counter shaft or main driving shaft;
Motion may be communicated from one crane to another or to others by a shaft or
shafts with gears-In some cases we fit guide pulleys near the top or bottom of the
axis of the upright and pass a driving rope over these guide pulleys and through
a verticle hole in or near the axle of the upright on to a pulley from which motion
is communicated to the barrel.

page_text: We communicate motion from the pulley or wheel at the top or bottom or
intermediate position of the axis of the upright to the barrel by a shaft on which
the said pulley or fixed, the said shaft having secured on it a worm or a friction or
other wheel that transmits motion to the barrel directly or indirectly.
We transmit the power from one crane to another by using pulleys with two or
more grooves, one groove receiving the rope that obtains motion direct from the
motor and the other groove or grooves receiving a rope or ropes passing round a
pulley or pulleys on another crane or cranes by this means a number of cranes
may be driven or an endless rope driven direct from the motor passing round
pulleys on a number of separate cranes may be used.

page_text: SPECIFICATION in pursuance of the conditions of the Letters Patent filed
by the said Marshall Jones Brooks and John Henry Spencer in the Great
Seal Patent Office on the 6th January 1883.
MARSHALL JONES BROOKS of Sunnyside Rawtenstall in the County of Lancaster
and JOHN HENRY SPENCER of Crawshaw Booth in the same County. "IMPROVE-
MENTS IN CRANES FOR QUARRYING AND MINING PURPOSES
"
Our invention relates to jib or derrick cranes with vertical uprights or beams,
the mechanism of which is driven by power derived from a separate independent
motor at any convenient distance from the cranes, for raising stone and other
purposes, our object being to so communicate motion to the winding gear that the
crane may be swung round when at work without interfering with the driving
mechanism. We fit on the axis of the upright of the crane a plain or grooved
pulley to which motion is communicated by a band or rope from a driving pulley
driven by a steam engine or otherwise. We place the pulley at the top or at the
foot. of the axis of the upright or vertical beam or at an intermediate position, or
we fit on the axis of the beam a spur or bevel wheel which gears into and receives
motion from a wheel on an independent counter shaft or main driving shaft.
Motion may be communicated from one crane to another or to others by a shaft or
shafts with gears. In some cases we fit guide pulleys near the top or bottom of
the axis of the upright and pass a driving rope over these guide pulleys and
through a vertical hole in or near the axle of the upright on to a pulley from
which motion is communicated to the barrel.
.
We communicate motion from the pulley or wheel at the top or bottom or
intermediate position of the axis of the upright to the barrel by a shaft on which
the said pulley or wheel is fixed, the said shaft having secured on it a worm or a
friction or other wheel that transmits motion to the barrel directly or indirectly.
And in order that our invention may be fully understood and readily carried into
effect we will describe the accompanying two sheets of drawings reference being
had to the figures and letters marked thereon.
Fig. 1 is a side elevation and Fig. 2 a back view of a jib or derrick crane to
which our invention is applied.
a is the upper pin or axis on which the crane swings: this pin is fixed in a boss
secured to the top of the upright 6: on this boss are fitted (so as to turn freely) the
pulley and toothed wheel d which are connected or cast together. To the
pulley c motion is communicated by a rope or otherwise from a detached engine
or motor placed in any convenient position. The wheel d gears into and turns the
wheele on the shaft fitted in bearings fif³ connected to the upright b: At the
lower end of the shaft fis the worm g that imparts motion through the wheel / to
the wheel i fixed on the barrel shaft : the wheel e is formed with a long bush
extending through the bearing f¹: at the lower end of the bush is fixed one half
of a friction clutch e': the other half of the clutch is fitted on a feather key in
the shaft fand it is moved in or out of contact by the lever e³ shaft e³ and hand
wheel e to stop or start the barrel. The lower end of the shaft f revolves in a
bearing formed in double eccentrics to which the hand lever g' is connected by
which the worm g may be moved out of gear with the wheel h when it is desired
to lower the load. The crane is swung by a handwheel; and gears in the usual
manner and it turns in a foot-pin in a footstep of the ordinary construction and is
supported at the top by guys k. We employ a common brake h³: ll are wooden
beams fixed on the upright b to carry the bearing of the barrel shaft i¹ and back
shaft h

page_text: Fig. 8 shows an improved driving mechanism applied at the bottom of a beam
which may have either single or double uprights.
c' is the driving pulley to which motion is communicated from an independent
motor: dis a wheel fixed on the same shaft as c¹ gearing into teeth on a wheel d¹
which revolves on the boss of the footstep: the wheel d³ is provided with internal
teeth that gear into the wheel e" and transmit motion to the barrel through the
shaft bevel wheels f" and back shaft i³.
Fig. 4 shows our invention applied to a crane having double uprights.
a' is a hollow pin on which the crane swings: through the centre of this pin
we pass the shaft fat the top of which is fixed the pulley o driven as before
described: motion is transmitted to the barrel by a bevel wheel on the shaft f
that turns bevel wheels and that may run loose on the back shaft i¹: a clutch
is placed between the wheels so that either of them may give motion to the
shaft according to the direction in which it is desired to turn the barrel.
Fig. 5 shows this modification of our invention. applied at the bottom of a
double upright crane.
Fig. 6 shows our improved rope or chain driving applied to a double upright
Crane. The rope passes over guide pulleys at the top of the crane through a
hollow pin or axis and over a pulley fixed on the back shaft by which motion is
imparted to the barrel. The rope driving may be applied at the bottom of the
crane in a similar manner.
We transmit the power from one crane to another by using pulleys with two or
more grooves, one groove receiving the rope that obtains motion direct from the
motor and the other groove or grooves receiving a rope or ropes passing round a
pulley or pulleys on another crane or cranes: by this means a number of cranes
may be driven or an endless rope driven direct from the motor passing round
pulleys on a number of separate cranes may be used.
Having stated the nature of our invention and described the manner of
performing the same we would have it understood that we do not limit ourselves
to the details given as they may be varied or modified and
We declare that we claim
1.-The transmission of power from a detached motor to a jib or derrick crane
through a shaft or gearing at (or near) the axis on which the crane swings
substantially in the manner and for the purpose herein described.
2. The transmission of power from a detached motor to a jib or derrick crane
by a rope or chain passing over guide pulleys at (or near) the axis on which the
crane swings substantially in the manner and for the purpose herein described.
3. The transmission of power from a detached motor to a series of jib or
derrick cranes, such power being transmitted from the first to the other crane or
cranes by means of rope or other gearing substantially as described.
In witness whereof I the said John Henry Spencer for myself and on behalf
of the said Marshall Jones Brooks have hereunto set iny hand and seal
this fifth day of January One thousand eight hundred and eighty three.