Motors to Dynamo-electric and other Machines.
Year: 1886

page_text: Date of Application, 19th Oct., 1886.
Complete Left, 26th May, 1887.
Specification Accepted, 8th July, 1887,
RESERV
Motors to Dynamo-electric and other Machines.
We, STEPHEN ALLEY, of Sentinel Works, Polmadie, in the County of Renfrew,
North Britain, Engineer, and ARTHUR GEORGE BROWN at the same Works, Engineer,
do hereby declare the nature of this Invention to be as follows, that is to say :-
Our said Invention has for its object to provide improved devices for transmitting
driving power to dynamo-electric and other machines.
In carrying out our Invention when requiring to drive the shaft of a dynamo at a
greater speed than that of the motor shaft, we employ a driving belt or set of ropes
with pulleys of suitable sizes on the driving and driven shafts, and we place an inter-
mediate pulley between and in contact with the driving and driven pulleys, provision
being made for having the pulleys in sufficiently close contact and for keeping the belt
or ropes tight. The intermediate pulley assists in transmitting the driving power, and
if the parts are accurately adjusted prevents lateral strains from acting on the shafts ;
whilst the arrangement admits of a much shorter belt than is commonly required.
The shaft of the driven pulley or the driven pulley itself is coupled to the shaft of
the dynamo by a slightly flexible coupling of improved construction. In this coupling
an annular series of strong pins or studs projecting from one coupling part parallel to
the shaft are entered into sockets made for them in the other coupling part,
these sockets being larger than the studs, whilst the studs have short thick rubber
tubes placed on them to fill or nearly fill the sockets. Whilst the described device
makes a good flexible coupling which is conducive to smooth running with little
friction, it has the advantage, when applied to dynamos, of insulating the shafts so
that in the event of short-circuiting the electrical current will not pass through the
coupling. This improved coupling may also be used when the shaft of a motor is
directly connected to a dynamo shaft.
Dated this Dichteanth day of October 1886.
EDMUNT HUNT,
Applicants' Agent.

page_text: Motors to Dynamo-electric and other Machines.
We, STEPHEN ALLEY, of Sentinel Works, Polmadie, in the County of Renfrew,
North Britain, Engineer, and ARTHUR GEORGE BROWN, at the same Works, Engineer,
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, that is to say :-
Our said Invention has for its object to provide improved devices for transmitting
driving power to dynamo-electric and other machines.
In carrying out our Invention when requiring to drive the shaft of a dynamo at a
greater speed than that of the motor shaft, we employ a driving belt or set of ropes
with pulleys of suitable sizes on the driving and driven shafts, and we place an inter-
mediate pulley between and in contact with the driving and driven pulleys, provision
being made for having the pulleys in sufficiently close contact and for keeping the belt
or ropes tight.
The shaft of the driven pulley or the driven pulley itself is coupled to the shaft of
the dynamo by a slightly flexible coupling of improved construction. In this coupling
an annular series of strong pins or studs projecting from one coupling part parallel to
the shaft are entered into sockets made for them in the other coupling parts, these
sockets being larger than the studs whilst the studs have short thick rubber tubes
placed on them to fill or nearly fill the sockets. This improved coupling may also be
used when the shaft of a motor is directly connected to a dynamo shaft.
Our improvements are shown on two accompanying sheets of explanatory drawings.
Figure, 1, is a side elevation of the motor and dynamo-electric machine. Figure, 2,
is an enlarged plan, and figures, 3, and 4, are enlarged side and end elevations of the
intermediate pulley and adjusting details. Figures, 5, and 6, are an enlarged hori-
zontal section and an enlarged side elevation of the driven pulley as fitted with the i
improved flexible coupling.
The driving belt, 7, passes from a large pulley, 8 on the motor shaft, 9, to a smaller
pulley, 10, on the shaft, 11, of the dynamo so as cause the latter shaft, 11, to be
driven at a greater speed than the motor shaft, J; and an intermediate frictional
pulley, 12, is placed between and in contact with the driving and driven pulleys, 8, 10.
The intermediate pulley, 12, is carried by a bracket, 13, formed on a sleeve, 14, which
slides on a pillar or standard, 15, the position of the sleeve, 14, on the standard, 15,
being regulated by a screw, 16, so that the pulleys, 8, 10, and 12, can be put in suffi-
ciently close contact to enable the intermediate pulley, 12, to assist in transmitting the
driving power, and also in keeping the belt tight. If the parts are accurately adjusted
the intermediate pulley, 12, prevents lateral strains from acting on the shafts, 9, 11,
whilst the arrangement admits of a much shorter belt than is commonly considered
necessary.

page_text: The improved form of coupling is, in the modification shown, in the drawings,
applied to the driven pulley, 10, and consists of an annular series of strong pins or
studs, 17, having screws on one end and secured by nuts, 18, in one coupling part, 19,
which forms part of the pulley, 10, and which is loose on the shaft, 11; and insulated
therefrom by a vulcanite bush, 20, fixed by a pinching screw. The studs, 17, project
from the coupling part, 19, parallel to the shaft, 11, and are entered into sockets made
for them in another coupling part, 21, secured to the shaft, 11, by a pinching screw,
The sockets are larger than the studs, 17, which have short thick rubber tubes, 23,
placed on them to fill or nearly fill the sockets. Whilst the described device makes a
good flexible coupling which is conducive to smooth running with little friction it has
the advantage, when applied to dynamos, of insulating the shafts so that in the event
of short-circuiting the electric current will not pass through the coupling.
22.
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 :-
1-In devices for transmitting rotatory motion from motors to dynamo-electric and
other machines the combination of an adjustable intermediate frictional pulley, between
the driving pulley of the motor and the driven pulley of the dynamo-electric or other
machine with a belt passing round the two pulleys substantially as and for the
purposes hereinbefore described.
2-In devices for transmitting rotatory motion from motors to dynamo-electric and
other machines, a coupling connecting the shaft of the driven pulley or the driven
pulley itself to the shaft of the dynamo-electric or other machine and constructed
substantially in the improved manner hereinbefore described.
Dated this Twenty-fifth day of May 1887
EDMUND HUNT,
Applicants' Agent.