An Improved Appliance for Putting on and Displacing the Belts of Pulleys or the like whilst in Motion.
Year: 1896

page_text: Date of Application, 28th Feb., 1896
Complete Specification Left, 23rd June, 1896-Accepted, 22nd Aug., 1896
PROVISIONAL. SPECIFICATION.
An Improved Appliance for Putting on and Displacing the Belts of
Pulleys or the like whilst in Motion.
I, RICHARD BIRCH GAMBLE, of Gamble's Factory, Raleigh Street,
Nottingham, in the County of Nottingham, Machinist, do hereby declare the
nature of this invention to be as follows:-
My invention consists of an improved appliance for putting on, and displacing
the belts of pulleys or the like whilst in motion.
Surrounding the driving shaft, and at a short distance from the pulley, is a
short sleeve or hollow drum, mounted in bearings so as to be capable of revolving
quite independently and clear of the shaft passing through the same.
The side of the drum nearest to the belt pulley, may be provided with arms,
bent up at the ends, for the belt, when displaced, to rest upon, or rollers, or any
other suitable device may be used.
One of said arms, hereafter called the replacing arm, is extended (or carries an
extension) radially to a point beyond the circumference of the pulley, and there
bent or curved at a sharp angle, in such a way that the bent or curved portion
may overhang, and come very close to the rim of said pulley. If desired, more
than one replacing arm may be employed.
The side of the drum furthest from the belt pulley is formed into a disc or rim,
cut away at certain points, and a similar dise or rim is fixed fast upon the shaft,
close to the rim or disc first mentioned, and cut away on its face in a reverse
manner, so that the two rims form a clutch when brought together.
I mount the drum aforesaid in such a manner that it is given a small amount of
play longitudinally in its bearings, and I cause the two forks of a forked lever to
embrace it ou, both sides, said lever hanging preferably with the handle downwards,
so as to be convenient for a man to move it slightly on one side, thereby causing
the clutch device to operate and give motion to the drum. A spring keeps the
latter normally out of gear with the shaft.
The replacing arm, when at rest, projects inwardly in line with the belt, and
rests normally upon a bolt worked from the forked lever aforesaid (or direct from
the drum), which is withdrawn on the latter being brought into action for causing
the clutch before mentioned to operate. Thereupon, the replacing arm is enabled
to revolve, and picks up the displaced belt, which may be lying upon the short
arms, or equivalents, of the drum, carrying it round with it upon the same, and
leaving it upon the pulley.
In order to arrest the drum after one revolution, I may attach a bevelled tooth
or short inclined plane to the drum-bearing on the side nearest to the pulley, over
which may ride a projection on one of the arms aforesaid, and then draw the
whole of the drum, together with the arms, on one side, releasing the clutch, and
causing the bolt, upon which the replacing arm rests, to be forced out again for the
purpose.
The displacing lever is of simple construction, bearing a cross piece at the
nd, which, pressing against the moving belt, throws the same off the pulley.
t may be furnished with non-frictional rollers, if desired, and may also have a
eturn spring.
Dated this 25th day of February 1806
STANLEY, POPPLEWELL & Co.,
7 and 8 Southampton Buildings, London, W.C.,
Agents for the Applicant.

page_text: An Improved Appliance for Putting on and Displacing the Belts of
Pulleys or the like whilst in Motion.
I, RICHARD BIRCH GAMBLE, of Gamble's Factory, Raleigh Street,
Nottingham, in the County of Nottingham, Machinist, 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:—
My invention consists of an improved appliance for patting on and displacing
the belts of pulleys or the like whilst in motion.
In the following description. reference will be made to the accompanying
drawings, showing four separate views of my apparatus.
Figure 1. is a side view (perspective) showing the replacing arm at rest, and
the belt alrendy in position on the pulley, and
Figure 2. is a reverse side view (perspective) showing the position of the belt
after having been displaced.
Figure 3. represents my device in section, and is intended to show especially
how the replacing arm engages with and takes up the belt and places it on the
pulley,
Figure 4. being a perspective view of the same.
In all the figures, many of the essential parts have had either to be omitted,
or shown broken away in order to explain the working of my apparatus clearly..
I will now proceed to particularly describe my invention, and the manner in
which it is carried out.
Surrounding the driving shaft A, and at a short distance from the pulley B, is
a short sleeve or hollow drum C. mounted in a cylindrical bearing D (omitted
from Fig. 1) so as to be capable of revalving quite independently and clear of the
shaft A passing through the same and carried in bearings a a. The side of the
drum nearest to the belt pulley, carries a ring E shrunk or otherwise fixed upon
the same and provided with arms F, hent up at the ends, as at, forming a
support for the belt when displaced, or rollers, or any other suitable devico
nay he employed for this purpose. An extra arm H, hereafter called the replacing
arm, is attached to the ring E by screws e, as shown, and extends radially to a
point beyond the circumference of the pulley B, and is there bent or curved at a
sharp angle in such a way that the bent or curved portion may overhang, and
come very close to the rim of the pulley. If desired, more than one replacing
arm may be employed.
The side of the drum furthest from the belt pulley is formed into, or carries a
disc or rim, ent away at certain points, and a similar disc or rim K is fixed
fast upon the shaft A, close to said rim or disc and cut away on its face in a
reverse manner, so that the two said rims and K form a clutch when brought
together.
slightly
1 mount the drum C aforesaid in such a manner that it is given a small amount
of play longitudinally in its bearing D. The clutch JK is put into netion by
means of a lever fulcrummed at Q and furnished at the lower end with a
handle (Fig. 1). At the upper end may be two curved arms which partially
surround the bearing D without touching same. On moving the handle
on one side, the extremities of the fork arms are caused to bear against the
rim pushing the latter against the rim K, whereupon the clutch device J K is
brought into action, and motion transmitted to the drum C. A spring M, bearing
against a pin upon the arm L, may be provided for keeping the drum C normally
out of gear with the shaft A.
l
The replacing
arm II, when at rest, projects inwardly in line with the belt G,
and carries a projection N which, as shown in Fig. 1., rests normally upon a

page_text: bolt O worked from the fork L aforesaid (or direct from the drum). Said bolt O
is withdrawn on the lever L being brought into action and causing the
clutch JK to operate. The replacing arm H is thereupon enabled to revolve,
and falls of its own weight; then picking up the displaced belt G (which may
be lying upon the short arms for equivalents), under the action of the clutch JK,
carries it round with it upon its bent portion h, and leaves the belt upon the
pulley B.
In order to arrest the drum after one revolution, I cause the two parts of the
clutch JK to separate automatically as follows. I attach a bevelled tooth Por
short inclined plane to the drum-bearing D, adjacent to the pulley, over which the
projection N aforesaid may ride, and thus draw the drum C on one side, releasing
the clutch J K, and causing the bolt O to be forced out again for the purpose of
arresting and supporting the replacing arm H. Said bevelled tooth P may be
situated in any desired position, however, for engaging with any of the revolving
arms, and thus drawing the two parts of the clutch apart.
The displacing lever R is of simple construction, bearing a cross piece S at the
end, bent as at s, which, pressing against the moving belt G, throws the latter off
the pulley. It may be furnished with non-frictional rollers if desired, and may
also have a return spring, if found necessary.
The action of the displacing lever R will at once be understood on referring to
Figures 1. and 2. Stops may be provided for limiting its throw.
It will be seen from the foregoing, that the action of my appliance for putting
on and displacing the belts of pulleys or the like is very simple and can be
performed with perfect ease and safety while the machinery is in motion.
When the belt (Fig. 2.) is to be put upon the pulley, it is only necessary to
draw the handle L inwardly towards the pulley B, whereupon the arm H will at
once fall, and the clutch simultaneously come into operation. The appliance will
now be in the position shown in Figure 3., and the arm I continuing to travel
round will, as shown by Figure 4., cause the belt to slide down the inclined
portion and eventually be left upon the rim of the pulley, the arm coming to
rest again as already described.
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. The improved appliance for putting in position the belts of pulleys or the
like whilst in motion, consisting of a drum such as C, arms such as F, and replacing
arm such as H, or mere equivalents thereof, all capable of rotating by means of
clutch mechanism J K, and the whole operating in the manner and for the purpose
hereinbefore described.
2. In an appliance such as mentioned in Claim 1., the combination of a drum C,
carrying arms F and H, clutch JK, lever L, and bolt O, the whole arranged and
operating in the manner and for the purpose herein before described.
3. The improved appliance for putting on and displacing the belts of pulleys or
the like whilst in motion consisting of a device or devices such as claimed in the
two foregoing paragraphs combined with a displacing arm such as R as hereinbefore
described with reference to the accompanying drawings.
Dated this 18th day of June 1896.
STANLEY, POPPLEWELL & Co.,
7 and 8, Southampton Buildings, Chancery Lane, London,
Chartered Patent Agents.