IMPROVEMENTS IN HOISTING OR LIFTING MACHINERY OR APPARATUS
Year: 1880

page_text: LETTERS PATENT to William Robert Lake, of the Firm of Haseltine, Lake,
& Co., Patent Agents, Southampton Buildings, London, for an Invention
of "IMPROVEMENTS IN HOISTING OR LIFTING MACHINERY OR APPARATUS."
A communication from abroad by Benjamin Hinsley, of Smethwick, in the
County of Stafford, but at present residing at Philadelphia, Pennsylvania,
United States of America, Machinist.
PROVISIONAL SPECIFICATION left by the said William Robert Lake at the
Office of the Commissioners of Patents on the 7th September 1880.
WILLIAM ROBERT LAKE, of the Firm of Haseltine, Lake, and Co., Patent Agents,
Southampton Buildings, London. "IMPROVEMENTS IN HOISTING OR LIFTINO
MACHINERY OR APPARATUS." [A communication from abroad by Benjamin
Hinsley, of Smethwick, in the County of Stafford, but at present residing at
Philadelphia, Pennsylvania, United States of America, Machinist.]
This Invention has relation to hand power hoisting or lifting machinery or
apparatus, and consists in the peculiar construction and combination of parts
hereinafter fully set forth.
In the accompanying Drawings,-
Figures 1 and 2 are respectively side and front elovations of a hand hoist
embodying my improvements.
Figure 3 is a rear elevation of the same with driving and lifting chains and
tackle removed.
Figure 4 is a broken transverse vertical section of the same.
Figure 5 is a central longitudinal section of a worn wheel and the lower portion
of the frame of hoist supporting the worm, the latter being in elevation.
Figure 6 is a detail plan of the power or driving wheel and chain guard.
Figure 7 is an elevation of a hoisting crane with my improvements applied
thereto..
Figure 8 is a detail plan of its winding drum.
Figure 9 is a detail plan of the chain securing fingers or bars, and
191
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page_text: Referring to Figures 1, 2, 3, 4, 5, and 6 of the Drawings, which illustrate a hoist
with my improvements applied, A is the frame, which is sustained upon a honk B,
which latter fits in an opening a in the former. The shank b of said hook is conical
and the opening a tapered to correspond, so as to take up lost motion. The neck 6'
is cylindrical and formed with a socket b', which receives the end of a screw o in
a collar C which surrounds said neck, and resting on the frame A prevents tho
hook from dropping out of said frame while permitting it to freely swivel on the
latter. D is the power wheel or pulley, having pins, notches, or teeth d', d', in
its grooved periphery over which passes a chain D¹. On the same shaft with the
pulley D is a worm E, through the medium of which motion is communicated to a
wheel F; whose periphery is grooved and toothed as shewn. The worm E is mado
with a concave periphery, as shewn, so as to distribute the wear evenly over all
its threads instead of upon the two or three middle threads on which such wear
usually falls. The wheel F is formed with two hubs f, f, and upon either side of
said wheel and upon the shaft f¹ are loose pulleys G, H, of different diameters, the
pulley G being double the diameter of the pulley H. The shaft or spindle f' is
fast on the frame A, and the wheel F revolves thereon. Said wheel and both
pulleys are provided with clutches f, g, h, respectively, and the pulleys are both
adapted to slide into and out of clutch engagement, with said wheel sliding onto
the bubs of said wheel when moved into such engagement. Either of said pulleys
may be in clutch engagement, the other being out, or both may bo in such engage-
ment at the same time. Said pulleys have also clutch-teeth or stops g', h³, on their
outer sides, so that when not in engagement with the wheel F they may be stopped
by the sides a', a', of the frame A. To obtain the greatest power the large
pulley G should be clutched with the wheel F. For greater speed the sinall
pulley H should engage with said wheel. By bringing both pulleys into clutch
engagement with the wheel F the speed will be three times that resulting from
having the pulley G alone on clutch with said wheel. Whenever one of the pulleys
is out of engagement with the wheel F such pulley will be stopped by the frame A.
The sides a, a, of said frame are formed with inwardly projecting bosses a", a³,
onto which the pulleys slide when out of cluteh with the wheel F; said sides are
also cut away or bevelled, as shewn at a³, as, to form inclines which will oporate
to draw the pulleys towards said sides when the teeth or stops g¹, h¹, impinge on
said inclines. The clutch teeth are bevelled as shewn, forming wedges, so that
when the pulleys are caused to turn backwards they will be moved out of engage-
ment with the wheel F. As soon as the clutch teeth clear the latter the stops on
the opposite sides of the pulleys meet the sides a¹, a', of the frame A, and the
inclines on the latter draw them on reversing the motion towards said sides
as already explained. In like manner when stopped against the sides a¹, a¹,
of the frame A the pulleys will on a backward movement be slid towards the
wheel F, and then on turning said wheel F forwardly they will be drawn into
complete clutch engagement with the latter. The movement of the pulleys G, H,
towards and from the wheel F is accomplished by draft on the lifting chain L,
which passes around both of said pulleys, as shewn, and engages with studs or pins
on their grooved peripheries. K is the weight or idle pulley around which the
chain L also passes, said pulley having a smooth grooved periphery unprovided
with studs or pins. Said pulley is sustained in a block K' which is independent
and apart from the frame A, and is provided with an eye or strap K², having an
opening in which is inserted a hook L' for attaching the weight, the shank of
said hook being conical like that of the hook B, and the opening & being tapered
to correspond. The shaft d of the power wheel or pulley D and worm E is sustained
in bearings in the lower bar of the frame A. i is a pivot screw with nut m,
whereby any end wise lost motion in said shaft d may be taken up; N represents
the chain guard for pulley D consisting of two arms n, n, which radiate from said
shaft and extend around the periphery of said pulley; the arms n, n, are bevelled
on their undersides, as shewn at n', nl, so as to permit draught on said chain at an
angle to the perpendicular. The arms n, n, on the inner or back side of the

page_text: pulley D terminate before reaching the shaft d, thus permitting the chain L to
hang between their ends and said shaft, thus allowing the pulley D to be brought
close up to pulley G and rendering the tackle very compact.
Figures 7, 8, 9, and 10 illustrate a modification of the said Invention applied to
a hoisting crane; O shews the swivelled upright, and O¹ an arm projecting
therefrom and supporting a scrow P bearing on its end a pulley P', which may be
moved by a banging chain p; Q is a nut or traveller which moves on said screw,
and is secured to a frame Q supporting pulleys q, q. When the screw P is
revolved the pulley frame Q¹ is moved towards or from the upright O as may be
desired. .
R shews the winding-drum frame secured to the upright O, and carrying a
horizontal shaft S. On shaft S is a gear wheel or pinion S¹ moved by a worm T
on a shaft T; fast on said shaft S is also a double clutch U. V and Ware
winding drums or pulleys of unequal diameters and widths, the drum V being half
the diameter but double the width of drum W; these drums are loose on the
shaft S, but are provided with clutch sections and w respectively, whereby they
may be engaged alternately or simultaneously with the clutch U with the same
results as are secured by clutching pulleys G and H with wheel F. Said drums are
also provided with clutch teeth and w' respectively, whereby they may be caused
to engage with the frame R, and thereby held stationary when not in engagement
with clutch U; said drums are clutched, as above described, by means of the
pivotted levers 7, 8, which are held in position by the stay pins r, s, as shewn.
X shows the winding chain, which passes around the drums V and W, over the
pulleys o, o, on the arm O', pulleys 9, 9, on traveller Q, and pulley y in tackle
block Y. Z, Z, are fingers on the upright O, wherewith the section of chain passing
to drum V or W is connected whenever the drum to which said section directly
passes is out of engagement with clutch U. In other words, whenever either drum
is out of engagement with clutch U the section of chain passing from such drum
is locked or held fast by one of the fingers Z, Z.

page_text: DESCRIPTION OF THE DRAWING.
Figures I. and II. represent in side and front elevation a hand hoisting or lifting
apparatus constructed according to this Invention, and
Figure III. is a rear elevation of the same with the driving and lifting chains
and the tackle removed..
Figure IV. is a transverse vertical section of a portion of the said apparatus.
Figure V. is a central longitudinal section of a worm wheel and the lower portion
of the frame of the said hoisting apparatus supporting the worm, the latter being
shewn in elevation.
Figure VL. is a plan of the power or driving wheel and a chain guard detached.
Figure VII. is an elevation of a hoisting crane with my improvements applied
thereto, and
Figure VIII. is a plan of the winding drum and adjacent parts of tho said
crane.
Figure IX. is a plan of the chain securing fingers or bars detached, and
Figure X. is a similar view of the travelling pulley frame.
Referring to Figures I. to VI. of tho Drawing A is the frame of the apparatus,
which is sustained upon a book B fitting an opening a in the said frame. The
shank bof the said book is conical, and the opening a tapered to correspond thereto
so as to take up lost motion. The neck b¹ is cylindrical and formed with a socket b³
to receive the end of a screw c in a collar C which surrounds the said neck and
rests upon the frame A; this collar prevents the hook from dropping out of the
said frame, while permitting it to freely swivel on the latter ; D is the power wheel
or pulley having pins, notches, or teeth, &, around its grooved periphery, over
which passes a chain D'. On the same shaft as this pulley D is a worm E, through
the medium of which motion is communicated to a wheel F, whose periphery is
grooved and toothed as shewn. The said worm E is made with a concave periphery
as shewn, so as to distribute the wear evenly over all its threads instead of upon
the two or three middle threads, on which such wear usually falls. The worm
wheel F is formed with two hubs f, f, and turns upon a shaft f¹; at the sides of
the said wheel are loose pulleys G, H, of different diameters, the pulley G being
double the diameter of the pulley H. The shaft or spindle f' is fast in the frame A,
and the wheel F revolves thorcon. The said wheel and the pulleys G, H, are pro-
vided with clutches f, g, h, and the pulleys are both adapted to slide upon the hub
of the said wheel and into and out of engagement with the same. Either of the
said pulloys may be brought into clutch engagement with the wheel whilst the
other is out of engagement with the same, or both of the said pulleys may be in
such engagement at the same timo. The said pulleys have also clutch teeth or

page_text: stops g, h, on their outer sidos, so that when not in engagement with the wheel F
they may be stopped by the sides a', a', of the frame A. To obtain the greatest
power the pulley H should be clutched with the wheel F. For greater speed the
pulloy G should engage with the said wheel. By bringing both pulleys into
engagement with the wheel F the speed will be three times as great as that
resulting from having the pulley H alone in engagement with said wheel.
Whenever one of the pulleys is out of engagement with the wheel F such pulley
will be stopped by the frame A. The sides a¹, a³, of said frame are formed with
inwardly projecting bosses a³, a³, upon which the pulleys slide when out of engage-
ment with the wheel F. The said sides are also cut away or bevelled at a³ to form
inclines which will operate to draw the pulleys towards the said sides when the
teeth or stops g', h¹, impinge upon the said inclines. The clutch teeth are bevelled,
as shewn, forming wedges, so that when the pulleys are caused to turn backwards
they will be moved out of engagement with the wheel F. As soon as the clutch
teeth clear the latter the stops on the opposite sides of the pulleys meet tho
sides a', a', of the frame A, and the inclines on the latter draw them on, reversing
the motion, towards the said sides, as above explained. In like manner when
stopped against the sides a', a', of the frame A the pulleys will on a backward
movement be slid towards the wheel F, and then on turning the said wheel F in
a forward direction they will be drawn into proper clutch engagement with the
latter. The movement of the pulleys G, H, towards and from the wheel Fis
accomplished by draught on the lifting chain L which passes around both of the
said pulleys, as shewn, and engages with studs or pins on their grooved peripheries.
K is the weight or idle pulley around which the chain L also passes, the said
pulley having a smooth grooved periphery unprovided with studs or pins. The
said pulley is sustained in a block K¹ which is independent and apart from the
frame A, and is provided with an eye or strap K³, having an opening k in which is
inserted a look L' for the attachment of the weight, the shank of the said hook
being conical like that of the hook B, and the opening k being tapered to correspond.
The shaft & of the power wheel or pulley D and worm E is sustained in bearings
in the lower bar of the frame A; M represents a pivot screw with a nut m whereby
any end wise lost motion of the said shaft d may be taken up; N represents the
chain guard for the pulley D, consisting of two arms n, n, which radiate from tho
said shaft and extend around the periphery of the said pulley; these arms n, n,
aro bevelled on their under sides, as shewn at n', n¹, so as to permit draught on the
chain D¹ at an angle to the perpendicular. The arms n, n, on the inner or back
side of the pulley D terminate before reaching the shaft d to permit the chain L
to hang between their ends and the said shaft, thus allowing the pulley D to be
brought close up to the pulley G, and rendering the tackle very compact.
Figures VII. to X. illustrate a modification of the said Invention applied to a
hoisting crane. O is the swivelled upright, and O¹ an arm projecting therefrom
and supporting a screw P having on its end a pulley P which may be moved by
a hanging chain p; Q is a nut or traveller which moves upon the said screw, and
is secured to a frame Q' supporting pulleys q, q.
When the screw P is revolved
this pulley frame Q' is moved towards or from the upright O as desired.
R. represents the winding-drum frame secured to the upright O, and carrying a
horizontal shaft S. On this shaft is a worm wheel or pinion S¹ moved by a worm T
on a shaft T. On the said shaft S is also fixed a double clutch U. V and W are
winding drums or pulleys of unequal diameters and widths, the drum V being half
the diameter but double the width of the drum W. These drums are loose upon
the shaft S, but are provided with clutch devices and w, whereby they may be
engaged alternately or simultaneously with the clutch U with the same results as
those secured by clutching the pulleys G and H with the wheel F as above
described. The said drums are also provided with clutch teeth v¹ and w¹, whereby
they may be caused to engage with the frame R and thereby be held stationary
when not in engagement with the clutch U. The said drums are clutched, as above

page_text: described, by means of the pivotted levers 7, 8, which are held in position by the
stay pins, s', as shewn.
* represents the winding chain which passes around the drums V and W over
the pulleys o on the arm 0¹, the pulleys q, q, on the traveller Q', and the pulley y
in the tackle block Y. Z, Z, are fingers on the upright O wherewith the section of
chain passing to the drum V or W is connected whenever the drum to which the
said section directly passes is out of engagement with the clutch U. In other
words, whenever either drum is out of engagement with the said clutch the section
of chain passing from such drum is locked or held fast by one of the said
fingers Z, Z.
Having thus fully described the said Invention as communicated to me by my
foreign correspondent, and the manner of performing the same, I wish it understood
that I claim,
First. In a hoisting or lifting machine or apparatus, and in combination with
the wheel or pinion fitted upon the shaft f', the loose pulleys G, H, of different
diameters mounted on the said shaft, and provided with clutches, whereby they
can be alternately clutched with the said wheels, substantially as herein set forth,
for the purposes specified.
Second. The worm wheel F having the hubs f. f, in combination with the
pulleys G, H, the said wheel and pulleys having clutches as shewn, and the said
pulleys being laterally adjustable to slide upon the said hubs when moved into
engagement with the said wheel, substantially as above set forth and for the
purposes specified.
Third. The combination with the frame A and the worm wheel F mounted on a
shaft having its bearings in the said frame of the pulleys G, H, provided with
clutches adapted to engage with the said wheel, and having teeth or stops on their
outer sides to impinge against the sides of the said frame, substantially as above
set forth and for the purpose specified.
Fourth. The combination with the pulley D of the chain guard consisting of
the arms n, n, extended around or bent over the grooved periphery of the said
pulley, but terminating before reaching the shaft d of the said pulley, substantially
as above set forth and for the purpose specified.
Fifth. In a hoisting machine or crane the combination with the winding shaft S
carrying a clutch U of two winding drums or pulleys V and W of unequal
diameter, and provided with means whereby they can be brought into engagement
with the said clutch U, substantially as herein set forth and for the purposes
specified.
Sixth. The combination in a hoisting machine or crane of the winding shaft S
carrying the drums V, W, the screw P, the traveller, the pulley frame, the winding
chain, the tackle block, and the pulleys o, over which the said chain passes,
substantially as above set forth and for the purposes specified.
Seventh. In combination with the druins V and W and the chain the
fingers Z, Z, substantially as above set forth and for the purpose specified.
In witness whereof, I, the said William Robert Lake, have hereunto set my
hand and seal, this Seventh day of March, in the year of our Lord One
thousand eight hundred and eighty one.
117M DADT TAKE
01