IMPROVEMENTS IN HOISTING MACHINES
Year: 1880

page_text: LETTERS PATENT to James Baird Handyside, of the Crown Iron Works,
Glasgow, in the County of Lanark, North Britain, Engineer, for an Invention
of "IMPROVEMENTS IN HOISTING MACHINES." A communication from abroad
by Thomas McCabe, residing at Philadelphia, Pennsylvania, United States of
America
PROVISIONAL SPECIFICATION left by the said James Baird Handyside at
the Office of the Commissioners of Patents on the 24th November 1880.
JAMES BAIRD HANDYSIDE, of the Crown Iron Works, Glasgow, in the County
of Lanark, North Britain, Engineer. "IMPROVEMENTS IN HOISTING MACHINES."
A communication from abroad by Thomas McCabe, residing at Philadelphia,
Pennsylvania, United States of America.
This Invention relates to hoisting machines of the kind in which a frame having
a hook or ring for suspension from a fixed point is provided with pulleys and
gearing details, and with two ropes, cords, or chains, one of which is for the
application of manual power, whilst the other is for moving the object to be
hoisted; and it consists in constructing and combining the parts of such machines
in an improved manner.
The frame of the improved machine consists principally of two central vertical
bars connected at the top and bottom, and formed with lateral arms for carrying
certain small guiding and confining pulleys. There are two horizontal shafts
carried in the frame, an upper one having fast on it outside of the frame a grooved
pulley, round which an endless hand rope is passed, and a lower one having fast on
it inside of the frame a grooved pulley, round which the hoisting rope is passed,
and the two shafts are geared together by means of a pinion on the upper one, and
a spurwheel on the lower one. The handing rope is kept in contact with a large
part of the upper pulley by two guiding and confining pulleys placed one on each
side below the middle, and a guard formed or fixed on the frame projects over
the top of the pulley to prevent the rope from jumping off, whilst another guard
projects beneath to keep the two sides of the rope from fouling. In a similar way
a pair of guiding and confining pulleys are placed near the bottom of the hoisting

page_text: pulley to keep the hoisting rope in contact with a large part of the pulley, and
assist in preventing it from slipping. And further to prevent the slipping of the
hoisting rope there is loosely centered on the upper shaft an arc-shaped piece,
partly embracing the hoisting pulley, and carrying at each end a roller which
enters the groove of the pulley and bears on the hoisting rope. Any tendency of
the rope to slip or leave the groove on one side merely acts on the arc-shaped piece
so as to make it nip the rope more firmly on the other side. The hand-rope pulley
is made with a brake rim on its inner side, and a brake block is applied so as to
act when required against the inside of the rim, this brake block being carried by
one arm of a lever centred eccentrically as regards the pulley, such lever having
another arm extending laterally, and having connected to it a rope, cord, or chain
for moving it from below. The motion of the pulley when turned in one direction
for hoisting tends to free the brake block, but the movement of the pulley in the
opposite direction makes the brake block bear or bind on the rim so that the load
cannot run down of itself; and when lowering the brake has to be relieved by hand,
and it can be manipulated so as to to regulate the speed of descent to whatever
may be wished.

page_text: SPECIFICATION in pursuance of the conditions of the Letters Patent filed by
the said James Baird Handyside in the Great Seal Patent Office on the
21st May 1881.
JAMES BAIRD HANDYSIDE, of the Crown Iron Works, Glasgow, in the County
of Lanark, North Britain, Engineer. "IMPROVEMENTS IN HOISTING MACHINES."
A communication from abroad by Thomas McCabe, residing at Philadelphia,
Pennsylvania, United States of America.
The said Invention relates to hoisting machines of the kind in which a frame
having a hook or ring for suspension from a fixed point is provided with pulleys
and gearing details, and with two ropes, cords, or chains, one of which is for the
application of manual power, whilst the other is for moving the object to be
hoisted; and it consists in constructing and combining the parts of such machines
in an improved manner.
The principal distinguishing features of the improved machine are, firstly, the
application of a yoke or arc-shaped piece which, by an automatic binding action,
prevents the hoisting rope or chain from slipping; secondly, the application of an
eccentric automatic brake block to the pulley on which the hand rope acts; thirdly,
the application of certain guide pulleys in connection with the hand rope, and of
similar pulleys and a deflecting plate or guard in connection with the hoisting
rope; and fourthly, the application of certain fixed guards to prevent displacement
and fouling of the hand rope.
And in order that the said Invention and the manner of performing the same
may be properly understood I hereunto append a Sheet of explanatory Drawings
to be hereinafter referred to, and representing a hoisting machine as made with the
improvements.
Figure 1 of the Drawings is a side elevation, Figure 2 is a vertical section as at
right angles to Figure 1, Figure 3 is an inverted plan showing the guide pulleys
and guard for the hoisting rope; Figure 4 shows the yoke or binding device as
detached, and Figure 5 shows the eccentric brake separately. In these Figures the
same reference numerals are used to mark the same or like parts wherever they
are repeated.
The frame of the improved machine consists principally of two central vertical
bars 6, 7, connected at the top and bottom by cross pieces 8, 9, and formed with
lateral arms 10, 11, for carrying certain small guiding and confining pulleys 12, 13.
There are two horizontal shafts carried in the frame, an upper one 14 having fast
on it outside of the frame a grooved pulley 15, round which an endless hand
rope 16 is passed, and a lower one 17 having on it inside of the frame a grooved
pulley 18, round which the hoisting rope 19 is passed, and the two shafts are
geared together by means of a pinion 20 on the upper one, and a spurwheel 21 on
the lower one, the latter being by preference cast in the same piece with the
hoisting pulley 18. The handing rope 16 is kept in contact with a large part of
the upper pulley 15 by the two guiding and confining pulleys 12 placed one on
each side below the middle, and a guard 22 formed or fixed on the frame projects
over the top of the pulley 15 to prevent the rope from jumping off, whilst another
guard 23 projects beneath to keep the two sides of the rope from fouling. In a
similar way a pair of guiding and confining pulleys 13 are placed near the bottom
of the hoisting pulley 18 to keep the hoisting rope 19 in contact with a large part
of the pulley and assist in preventing it from slipping. And further, to prevent
the slipping of the hoisting rope 19 there is loosely centered on the upper shaft a
yoke or arc-shaped piece 24 (shown separately in Figure 4), partly embracing the
hoisting pulley, and carrying at each end a roller 25, which enters the groove of
the pulley and bears on the hoisting rope 19. Any tendency of the rope to slip or

page_text: leave the groove on one side merely acts on the arc-shaped piece so as to make it
nip the rope more firmly on the other side. A guard 31 formed on and projecting
up from the bottom piece 9 carrying the pulleys 13 prevents the two sides of the
hoisting rope 19 from interfering with each other. The hand-rope pulley 15 is
made with a brake rim 26 on its inner side, and a brake block 27 is applied so as
to act when required against the inside of the rim, this brake block being carried
by one arm of a lever 28 centered eccentrically as regards the pulley, such lever
having another arm extending laterally and having connected to it a rope, cord, or
chain 29 for moving it from below. The motion of the pulley 15 when turned in
one direction for hoisting tends to free the brake block 27, but the movement of
the pulley in the opposite direction makes the brake block bear or bind on the rim
so that the load cannot run down of itself; and when lowering the brake has to
be relieved by hand, and it can be manipulated so as to regulate the speed of
descent to whatever may be wished. A spring 30 is applied to the brake lever 28
to tend to move it into the braking position.
Having thus particularly described the said Invention, and the manner of
performing the same, I have to state that I do not restrict myself to the
precise details herein described or delineated, but that what I believe to be novel
and original, and claim as the Invention secured to me by and in terms of the
herein before in part recited Letters Patent is,―
1. The combination of the yoke or arc-shaped piece 24 with the hoisting
pulley 18, substantially in the manner and for the purposes herein before described.
2. The combination with the hand-rope pulley 15 of the automatic eccentric
brake 27 and lever 28, arranged and operating substantially as hereinbefore
described.
3. The combination with the hand-rope pulley 15 of the confining and guiding
pulleys 12, as hereinbefore described.
4. The combination with the hand-rope pulley 15 of the guards 22, 23, as
hereinbefore described.
5. The combination with the hoisting pulley 18 of the confining and guiding
pulleys 13, as herein before described.
6. The combination with the hoisting pulley 18 of the pulleys 13 and the
deflector or guard 31, as hereinbefore described.
In witness whereof, I, the said James Baird Handyside, have hereunto set my
hand and seal, this Twentieth day of May, in the year of our Lord
One thousand eight hundred and eighty-one.
TA
D TLANDVSINE
101
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B. HA
TLANDVSINE (L.S.)