Year: 1888

page_text: Date of Application 2nd July, 1888
Complete Specification Left, 2nd Apr., 188
Complete Specification Accepted, 1st June, 1859
1, JOHN TAYLOR, of the firm of John Taylor and Sons, Engineers and Ironfounders,
of Queen's Road, Nottingham do hereby declare the nature of this invention to be as
follows:-
:-
This Invention has for its object improvements in Hoists, and other lifting appliances;
so as to render them absolutely safe in working, by preventing the Load and Cage
from running down in the event of a breakage of the Driving Belt, or of its accidentally
coming off the Driving Pulley. And also relates to a special construction and arrange-
ment of the Gearing, so as to render the Hoist very compact and powerful.
For this purpose, I mount the whole Machine on one Baseplate; to which are fixed
three upright Standards to carry all the gearing of the Hoist. At the upper part of
these Standards, I have a horizontal Shaft working in suitable Bearings - on one end
of which is keyed a Brake Pulley, fitted with Brake Strap, Lever, and tightening
gear; a sumall Bevel Wheel is also keyed on this Shaft. On the other end of this
Shaft are mounted three Driving Pulleys; the outer one being keyed on the Shaft for
driving the Hoist one way, by means of the Shaft and Bevel Wheel above-mentioned;
the centro one forms the loose Pulley, riding freely on the Shaft; and the third Pulley
is fitted with a long sleeve working in a hearing, and carrying a Bevel Wheel at the
outer end. This Pulley, Sleeve, and Wheel run loose on the Shaft; and serve for
driving the Hoist in the opposite direction to the other Pulley. Each of the above
Bevel Wheels work at opposite sides of, and into a much larger horizontal Bevel
Wheel, fitted on a vertical Shaft running in suitable Bearings; and provided at the
lower end with a small Bevel Wheel. This Wheel in turn gears into a larger Bevel
Wheel, keyed on a horizontal Shaft, running in suitable Bearings bolted to the Base-
plate. This Shaft carries the Hoisting Drum; which I prefer to make with a spiral
groove, the better for properly receiving the Hoisting Rope thereon.
I employ one Belt only for driving the Hoist; and this Belt is guided to drive any
one of the three Driving Pulleys by a Belt Fork, and sliding notched Bar, working in
anitable brackets on the Standards

page_text: A Friction Roller connected to the Brake Lever, and fitted with a Weight, slides on
inclines formed upon the upper side of this Bar ; in such a manner, that when the
Belt runs on the centre looso Pulley, the roller hangs clear of the Bar, bolds the Brake
Wheel tight, and effectually brakes the Hoist by means of the Balance weight, lever
and Brake Strap. When the Belt is working on either of the Driving Pulleys, for
patting the Hoist in motion in either direction; the Roller slides up the incline on
the Bar, raises the Balance weight, and releases the Brake Strap from the Brake; and
so allows the Hoist to come into action.
For preventing accidents by the breakage of the driving Belt, or by its accidentally
coming off the Driving Pulleys; 1 fit these latter with Safety Brakes, described as
under.
Under each of the two Driving Pulleys I have two cylinders, in each of which slide
freely a Kam; formed at its upper end with a double inclined trough, of an inclination
steeper than the Radius of the Palleys; and of a length of about one fourth the diameter
of these Pulleys. A hard Wood or In lia Rubber Roller runs loosely in each of these
Troughs.
Under each of the above Rams I place powerful springs, so as to force the Rams
and the Rollers in the Troughs close up to the Pullies, when the brakes require to
com: into action. In ordinary every-day work; the Rams with their Troughs and
Rollers, are held down clear of the Pulleys by means of Safety Pins, connected by
chains or Links to two Levers, keyed on a Shaft carried in hearings from the
Cylinders to this Shaft is also keyed an upright lever, terminating in a forked
end; between which an idle Roller revolves freely & loosely, against the inside
of the driving Belt; in such a manner, that should this Belt break or accidentally
come off the driving Pulleys; the "idle" Roller with its lever falls down, and at
the same time withdraws the Safety Pins from the Rams.
When the Rams are free, they are immediately forced upwards by the Springs
under them or as an alternative plan by axcentrics or cams keyed on this Lever
Shaft and they force the Brake Roliers in close contact with the revolving Pulleys,
which carry the Rollers up the inclines; & these being steeper than the radius of the
Pulleys, gradually stop the action of the Pulleys; and effectually brakes, and firmly
holds the Hoist with its weight from moving turther either up or down. To prevent
the Rams from being forced down again on the Springs, when the Brakes come into
netion; allow one or more small Iron Rollers from a small hopper at the side of each
Cylinder, to fall under ench Ram, and so prevent them descending again until the
Rollers are removed by hand.
These Brakes aro applicable to any form of Hoist or Driving Gear other than the
above described Hoist and Gearing.
this Thiminth day of Inna 1988

page_text: I, JOHN TAYLOR of the Firm of John Taylor and Sons, Queen's Road, Nottingham,
Engineers 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 :-
This Invention has for its object improvements in Hoists, and other lifting
appliances, driven by a Belt; so as to render them absolutely safe in working, by
preventing the Load and Cage from running down in the event of breakage of the
Driving Belt, or of its accidentally coming off the Driving Pulley. And also relates
to a special construction and arrangement of the Gearing, so as to render the Hoist
very compact and powerful.
For this purpose, I mount the whole Machine on one Baseplate, to which are fixed
three upright Standards to carry all the Gearing of the Hoist. At the upper part of
these Standards, I have a horizontal Shaft working in suitable Bearings; on one end of
which is keyed a Brake Pulley, fitted with Brake Strap Lever and tightening Gear; a
small bevel Wheel is also keved on this Shaft.
On the other end of the Shaft are mounted three Pulleys, the outer one being keyed
on the Shaft for driving the Hoist one way by means of the Shaft and Bevel Wheel
above mentioned. The centre Pulley forms the loose Pulley, riding freely on the
Shaft; and the third Pulley is fitted with long Sleeve working in a Bearing, and
carrying a Bevel Wheel at the other end. This Pulley Sleeve and Wheel run loose
on the Shaft, and serve for driving the Hoist in the opposite direction to the other
Pulley.
Each of the above Bevel Wheels work at opposite sides of, and into a much larger
horizontal Bevel Wheel, fitted on a vertical Shuft, running in suitable Bearings, and
provided at the lower end with a small Bevel Whee!. This Wheel in turn gears into
a larger Bevel Wheel keyed on a horizontal Shaft, running in suitable Bearings bolted
to the Baseplate.
This Shaft carries the Hoisting Drum, which I prefer to make with a spiral groove,
the better for properly receiving the Hoisting Rope thereon.
I employ one Belt only for driving the Hoist; and this Belt is guided to drive any
one of the three Pulleys, by a Belt Fork, and sliding notched Bar working in suitable
Brackets on the Standards.
A Friction Roller connected to the Brake Lever, and fitted with a Weight slides on
inclines formed upon the upper side of this Bar-in such a manner that when the Belt
runs on the centre loose Pulley, the Roller hangs clear of the Bar, holds the Brake
Wheel tight; and effectually brakes the Hoist, by means of the Balance Weight,
Lever and Brake Strap. When the Belt is working on either of the Driving Pulleys,-
for putting the Hoist in motion in either direction-the Roller slides up the incline on

page_text: the Bar, raises the Brake Lever, and releases the Brake Strap from the Brake Wheel;
and so allows the Hoist to come into action.
For preventing accidents by the breakage of the Driving Belt, or by its accidentally
coming off the Driving Pulleys, 1 fit these latter with Safety Brakes, described as
under. Under each of the two Driving Pulleys, I have two Cylinders; in each of
which slide freely a Ram, formed at its upper end with a doublo inclined trough, of
an inclination steeper than the Radius of the Pulleys, and of a longth of about one
fourth the diameter of these Pulleys. A hard Wood or Indin Rubber Roller runs
loosely in each of these Troughs,
Under each of the above Rams, I place powerful Springs, so as to force the Rams
and the Rollers in the Troughs close up to the Pulleys, when these Brakes require to
come into action. In ordinary every day work, the Rams with their Troughs and
Rollers are held down clear of the Pulleys by means of Safety Pins connected by
Chains or Links to two Levers keyel on Shaft, carried in Bearings from the
Standards. To this Shatt is also keyed an upright Lever, terminating in a forked or
other shaped end, on which an idle Roller revolves freely ant loosely against the inside
of the driving Bolt-in such a manner, that should the Belt briak or accidentally
come off the Driving Pulleys, the Idle Roller with its over fills down, and at the
same time withdraws the Safety Pin from the Ramms. When the Rams are free, they
are immediately forced upwards by the Springs under them; or as an alternative plan
by an eccentric or Cam keyed on this Lover Shaft; and they fore the Brake Rollers
in close contact with the Revolving Pulley, which carries the Rollers up the inclines;
and these bring steeper than the radius of the Pulleys gradually stops the netion of
the Pulleys and effectually brakes, and firmly holds the Hoist with its weight from
moving either up or down.
To prevent the Rams from being forced down again on the Springs—when the
Brakes come into netion-l allow one or more small Iron Rollers, from a small
Hopper at the side of each Cylinder, to fall under ea · Ram, and so prevent them
descending again until the Rollers are removed by hand.
These Brakes are applicable to any other forms of Hoist and driving Gear other
than the above described Hoist and Gearing.
And in order that my Invention may be fully understood, and readily carried
into effect, will proceed to describe the accompanying Sheet of Drawings,
reference being had to the figures and letters marked thereon.
Figure 1 is a front Elevation-partly in section-Fig. 2 an end Elevation, and
Fig. 3 a sectional end Elevation through the line A. B. Fig. 1, of my improved
Safety Hoist.
Similar letters refer to similar parts throughout the several views.
The whole Machine is mounted on one Baseplate C, to which are fixed three
Standards D. D and 1, at the upper parts of which I have a horizontal Shaft E,
working in Bearings F, F and On one end of Shaft E is keyed a Braku
Pulley G, fitted with a Brake Strap G', Brake Lever H, and Weight H³ to same.
A small bevel Wheel 1 is also keyed on Shaft E.
On the other end of Shaft E are mounted three Pulleys J, J'and JF, the two
outer ones and Jª being Driving Pulleys. Pulley J is keyed on the Shaft E, for
driving the Hoist one way. The centre l'ulley J runs loose on Shaft E, and forms
the loose Pulley for the Belt to run on, when the Hoist is standing.
Pulley J is fitted with a long sleevs K working in Bearing, and carrying a
Bevel Wheal at the other end; these all run loose on Shaft E, and sorve for
driving the Hoist in the opposite direction to Pulley J.
The Bevel Wheels K and 1 work at opposite sides of, and into a horizontal
Bevel Wheel L fitted on the Vertical Shaft M running in Bearings Mand_M';
and fitted at its lower end with a Bevel Wheel N, which gears into a larger Bevel
Wheel O, keyed on the Horizontal Shaft P, running in Bearings P, P and fastened
to the Baseplate C. This Shaft carries the loisting Druin R, which I make with
a spiral Groove for properly receiving the Hoisting Rope.
1 employ one Belt only-always going in one direction-for driving the Hoist.

page_text: This Belt is guided by the Belt Fork S onto any one of the three Pulleys J, J' or ' ¦
the Belt Fork S is attached to the Notched Bar T-working in Brackets on Standards
D1 and D2.
A Friction Roller H-on the end of Brake Lever H, and fitted with a Weight H³
slides on the Inclines formed as shown-upon the upper side of Bar T. The action is
such, that when the Belt is running on the loose Pulley J', the Roller H' hangs clear of
the Bar T, allows the full weight of Balance weight H to pull the Brake Lever H
down, and by means of Brake Strap G, firmly holds Brake Wheel G, and effectually
stops the Hoist from moving in either direction.
When the Hoist is required to be put in motion in either direction, Bar T and Belt
Fork S is moved, so that the Belt runs on either of the Pulleys Jor J; and this
action causes Roller H¹ to slide up the Inclines on Bar T, raise Brake Laver H, and
releases the Brake Strap G' froin Brake Wheel G¹, and thus allows the Hoist to
come into action.
For preventing accidents by the breakage of the driving Belt, or by its accidentally
coming off the Driving Pulleys J or J*, I fit them with Safety Brakes described as
follows.
Under the Driving Pulleys J and J I attach two cylinders U and U' to the base-
plate C, in which Cylinders slide freely Rains V and V, formed with a double inclined
trough at their upper end-as shewn. The inclination of these troughs are steeper
than the Radius the Pulleys J, and they are each provided with a hard wood or
India Rubber Roller X, capable of running freely therein. Under Rams V, V¹
I place strong Springs 2, so as to force the Rams and Rollers X close up to
Pulleys J, J, when the Brakes require to come into action
During ordinary use, Rams V, VI with their Troughs and Rollers X, are held down
clear of Pulleys J, J' by the Safety Pins 4, connected by a short Chain or Link
to the Levers 5 and 5 keyed on Shaft 5, turning in Bearings on Standards D, D¹.
To this Shaft is also keyed an upright Lever 6, carrying at its upper end an idle
Roller 7, which turns loosely against the inside of the Driving Belt, in such a
manuer, that should this Belt break, or come off either of the Driving Pulleys J
or J2, the Roller 7 with its lever 6 falls down; and in so doing withdraws the Safety
Pins from the Rams V, V'; which latter are immediately forced upwards-by
Springs 2 and force the Brake Rollers X into close contact with the revolving
Pulleys J, J, which carry Rollers X up the inclined troughs on Rams V, V₁;
and these inclines being steeper than the radius of the Pulleys J, J' gradually
stop the motion of the Pulleys J, J', effectually brakes and firmly holds the Hoist
from moving in either direction up or down. To prevent Rams V, V¹ being
forced down again on Springs 2, when the Brakes come into action, I cause one or
more small Iron Rollers 8, 8, to fall (from a small Hopper 9, 9 at the sides of
Cylinders U, U¹) under a projection 10 on the Rams, or sometimes under the Rams
themselves; immediately the Rams ascend in coming into action as before explained.
The Rollers 8, 8 are withdrawn, by drawing out the small slide 12, or other suitable
means.
As an alternative plan, I sometimes fit an armed Disc 14 at the end of Shaft E,
having three or more projections or Arms Z, Z, Z; and under this Disc, I attach to
the Standard D, a Cylinder Us, fitted with Ram V, Roller X, Iron Rollers 8, 8,
and Safety Pin 4 attached by chain to Lever 6; the action of which is the same as
described above; except, that on Ram V³ ascending to the position shown in the
Drawing, one of the Arms Z in revolving carries Roller X up the inclined_trough
until it is stopped. In the case of the Brakes at Pulleys J, J', it is the Friction
alone of the Belt or Pulleys which run the Roller X up the Inclines. I sometimes fit
this alternative Plan as a subsidiary Brake to those under Pulleys J, J and some-
times dispense with these latter Brakes and use Disc 14 with its Brake alone. In
the Drawings annexed, the Brake under Disc 14 is shown as being in action,
while those under Pulleys J, J' are shown fastened down and ready for action.
These Brakes are applicable to any other arrangement of Hoist or Belt driven
Lifting Machinery other than the above described Hoist, and Gearing.

page_text: Having now particularly described and ascertained the nature of my said Inven-
tion and in what manner the same is to be performed, I declare that what I
claim is :-
1. In Belt-driven Hoists (and other Belt-driven Lifting Machinery), the peculiar
arrangement, construction and combination of lelle Roller 7. Lover 6, Cylinder U,
Ram V with inclined Trough, Brake Roller X, and the other parts shown in the
annexed drawings; whereby, when the roller 7 and Lover 6 fall down, the Safety
Pin 4 is withdrawn to allow the Ram Vand Brake Roller X to be forced upwards by
Spring 2, into contact with the Belt-driven Pulley, and thus form a Brake to stop
the turning of this Pulloy, all substantially as herein shown and described.
2. The use of one or more Iron Rollers 8, 8, to fall under Ram V, or under a
projection on same, when the Ram rises; wheroby it is provented from being forced
down again and thrown out of action, substantially in the manner, and for the
purposes herein shown and described.
8. In l'ower Hoists, the particular arrangement and combination of gearing, and
other parts, as shown in Figures 1-2 & 3 of the annexed drawings; as set forth and
substantially as shewn and hereinbefore described.