Year: 1887

page_text: We FRANCIS HINDLE of 49 Queens Road and JOHN EDWIN NORTON of 12 Oliver
Street both of Oldham in the County of Lancaster Machine Makers 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 :-
or
"
This invention relates chiefly to that part of a hoist or crab known as the "barrel
"drum" upon which the rope or chain is wound to raise, the load, but the
apparatus to which we apply our invention as described hereafter is also novel; and
in order that the same may be clearly understood we have annexed hereunto two
sheets of drawings illustrative thereof.
On Sheet 1 Fig. 1 is a plan view of a friction hoist, constructed according to our
invention.
Fig. 2 is a side elevation of the same, and on Sheet 2. Fig. 3 is a longitudinal
sectional view of the "barrel " or drum detached.
::
Hitherto it has been customary when constructing a hoist to make the "barrel" of
several, parts, namely a shaft, and an iron cylinder or covering, or a series of wooden
lags forming the actual "barrel" on which the chain is wound. The friction or other
driving wheel is mounted on the shaft at one end of the covering.
66
We form the shaft and the "barrel" in one piece of metal, thus dispensing with
the fitting and fixing of the latter on the former and our barrel "only requires to
be sufficiently strong to resist all tendency to bend when the power is applied to lift
the load.
The friction or other driving wheel is mounted on the barrel and thus the power is
most advantageously applied and the barrel being smaller in diameter than usual
the friction or other driving wheel may be proportionately reduced which will make
the whole apparatus more compact lighter and cheaper than before.

page_text: Fig. 3 as before mentioned illustrates the construction of our improved barrel «, «
the bearings of which may be reduced in diameter as shown.
"
In our improved hoist, shown at Figs. 1. and 2, one of the journals of the
" barrel a, a is mounted on or forms part of a lever c, c¹ the other journal b¹ being so
made as to allow a slight amount of play to the said journal b, and lever c, c¹ which is
pivotted at c² to the frame of the hoist.""
We mount a friction wheel d, d upon the barrel a a the said wheel d being driven
by a small friction wheel e, e on a shaft actuated by a strap pulley. 9, 9 or other
suitable gearing.
A fixed brake block h, his adjusted at the other side of the friction wheel d, d so
that when it is desired to cease winding and raising the load, by depressing the
end of the lever c, c¹ the end c which carries the journal will withdraw the friction
wheel d, d from contact with its driving wheel e, e and move it into contact with the
brake, hand stop the revolution of the barrel a, a and hold the load suspended.
We also prefer to fix a flange i, i on the barrel a, a to limit the chain. ."
Having now particularly described and, ascertained the nature of our said invention
and in what manner the same is to be performed; we declare that what we claim is :-
First. The barrel and the shaft of a hoist or crab made in one piece as hereinbefore
described.
:-
Secondly. The improved friction hoist constructed and operating substantially ag
hereinbefore described and illustrated by the annexed drawings.
1 1°
1
1007
GEORGE DAVIES,
4, St. Ann's Square, Manchester,
Agent for the Applicants.