An Improved Self-acting Brake for Crane.
Year: 1895

page_text: Date of Application, 7th Nov., 1895
Complete Specification Left, 4th Mar., 1896-Accepted, 4th Apr., 1896
An Improved Self-acting Brake for Crane.
We JOHN SAUNDERS WILLIAMS, of Fron Oleu Maenturog, N. Wales,
Labourer, and WILLIAM LEWIS, of Gwalia House, Blaenau Festiniog, Engineer,
do hereby declare the nature of this invention to be as follows:-
The brake wheel is fastened on a spindle which has a ratchet wheel keyed ou
it, and the pall fastened on side of a cog wheel running loose on same spindle
with a spring to press the pall down to ratchet wheel when lowering. The brake-
band is bent round the brake wheel, and has its two ends fastened to a chain
or a rope which is fastened at top of frame to a lever and carries a wheel
suspended at the other end; the chain or rope for lifting purposes passes over
this wheel and when the load is lifted or suspended at the end of chain or rope
it draws the lever down and causes the brake band to come tight on brake
wheel and prevent the load from coming down.
The loose cog wheel gearing to a pinion on a spindle fixed between it and
main spindle, and the handles are fixed to this for lifting and lowering, this
pinion gearing to the spur wheel on drum spindle. When its required to lower
quick the pinion can be slipped out of gear and lower the load instantaneously.
Dated this 4th day November 1895.
J. P. BAYLY,
18 Fulham Place, W., Agent for the Applicants.
We, JOHN SAUNDERS WILLIAMS, of Fron Oleu Maenturog, N. Wales,
Labourer, and WILLIAM LEWIS, of Gwalia House, Blaenau Festiniog, Engineer,
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:-
Our invention relates to an improved self acting brake for crane.
And in order that our invention may be thoroughly understood, we now proceed
to describe the accompanying drawing thereof, reference being had to letters and
figures marked thereon.
Fig. 1, is a side elevation of the apparatus fitted to a crane.
Fig. 2, is a front elevation.
This invention consists of a suitable frame plegs 9 and a lever g pivoted together
on a long pin r. On the frame p is the brake wheel a fastened on a spindle
mounted in bearings o. The said spindle has a ratchet wheel c keyed on it and a
cog wheel d (a pall is fastened on the side of the cog wheel d running loose on the
spindle b with a spring to press the pall down to ratchet wheel c when lowering if
required). The brake wheel a is fitted with a brake band e bent round the brake
wheel and has its two ends fastened to a chain or rope which is fastened at the
top of the frame to a lever g this said lever carries a pulley wheel i suspended at
the other end; the chain or rope h for lifting purposes passes over the pulley
Price 8a1

page_text: wheel and when the load is lifted or suspended at the end of chain or rope / it.
draws the lever g down and causes the brake band e to become tight on the brake
wheel a and prevent the load from coming down.
The cog wheel d gears with a pinion-j fixed on the driving spindle k mounted in
bearings between spindle b and main shaft 1. The handles are fitted to the
driving spindle k for lifting and lowering. The pinion j gears with the spur
wheel m fixed to the drum n and niain shaft.
When its required to lower a load quick the pinion; can be slipped out of gear
in the direction indicated by an arrow in Fig. 2, and the load falls instantaneously.
Having now particularly described and ascertained the nature of our said inven-
tion, and in what manner the same is to be performed, we declare that what we
claim is :-
1. In a self acting brake for crane, the combination of the brake wheel a
spindle ratchet wheel c cog wheel & brake band e lever g chain or rope fand h,
pulley wheel i pinion; driving spindle k main shaft spur wheel m drum n
bearings o frame p legs and pin r, substantially as herein described and according
to the accompanying drawing.
2. In a self acting brake for crane, the combination of the brake band e brake
wheel a cog wheel & pinion j cog wheel m spindles b and k, main shaft drum n
chains or ropes fand, with the pivoted lever g, substantially as herein described
and according to the accompanying drawing.
3. In a self acting brake and crane, the combination of the apparatus as
herein before described in this Specification and illustrated in the accompanying
drawing.
Dated this 4th day of March 1896.
J. P. BAYLY,
18 Fulham Place, London, W., Agent for the Applicants.