A New or Improved Arrangement of Driving Mechanism for Connecting Electro-motors to Machinery.
Year: 1899

page_text: Date of Application, 18th Sept., 1899
Complete Specification Left, 12th Jan., 1900-Accepted, 17th Feb., 1900
A New or Improved Arrangement of Driving Mechanism for
Connecting Electro-motors to Machinery.
I. GEORGE JAMES GIBBS, of Water Lane Works, Water Lane, in the City of
Bradford, Engineer and Electrician, do hereby declare the nature of this inven-
tion to be as follows:-
This invention relates to improvements in the means or method of connecting
electro-motors to machines for the purpose of driving them at a reduced speed.
and the primary object of the improvements is to provide simple means for
relieving the motor at starting as well as ready means for stopping the machine
when required.
For this purpose I employ a pinion wheel on the motor to engage a spur
wheel mounted on a shaft in a bearing or bearings formed in a radial arm or
bracket pivoted on a centre or shaft concentric with the motor or pinion shaft.
A pulley, preferably flanged, is provided concentric with the spur wheel and
driven by it and this pulley is connected by a belt to the driving pulley of the
machine to be driven. A connecting rod operated by a screw, lever or equivalent.
means may be provided to move the said radial arm or bracket upon its centre
for the purpose of sufficiently slackening the driving belt to prevent it materially
retarding the motor at starting or to stop the machine when required. Provision
is made for readily moving the radial arm or bracket back to the driving position
as soon as the motor has attained the desired speed. The said spur wheel and
flanged pulley may be mounted on opposite ends of a counter shaft supported
in bearings in the said radial arm or bracket.
As a modification the flanged pulley may be mounted upon the motor shaft
and motion be communicated therefrom to a pulley on a counter shaft carrying
a pinion engaging a spur wheel driving the machine. This counter shaft is.
supported in bearings formed in radial arms or a bracket the pivot of which is
concentric with the spur wheel. Suitable provision is made for moving the
radial arms or bracket to slacken and tighten the belt as required.
Dated this 16th day of September 1899. .
A New or Improved Arrangement of Driving Mechanism ior
Connecting Electro-motors to Machinery.
I, GEORGE JAMES GIBBS, of Water Lane Works, Water Lane, in the City of
Bradford, Engineer and Electrician, do hereby declare the nature of this inven-

page_text: tion and in what manner the same is to be performed, to be particularly described
and ascertained in and by the following statement:-
:-
This invention relates to improvements in the means or method of connecting
electro-motors to machines for the purpose of driving them at a reduced speed,
and the primary object of the improvements is to provide simple means for
relieving the motor at starting as well as ready means for stopping the machine
when required.
For this purpose I employ a pinion wheel on the motor to engage a spur
wheel mounted on a shaft in a bearing or bearings formed in a radial arm or
bracket pivoted on a centre or shaft concentric with the motor or pinion shaft.
A pulley preferably flanged, is provided concentric with the spur wheel and
driven by it and this pulley is connected by a belt to the driving pulley of the
machine to be driven. A connecting rod operated by a screw, lever or equivalent
means may be provided to move the said radial arm or bracket upon its centre
for the purpose of sufficiently slackening the driving belt to prevent it materially
retarding the motor at starting or to stop the machine when required. Provision
is made for readily removing the radial arm or bracket back to the driving position
as soon as the motor has attained the desired speed. The said spur wheel and
flanged pulley may be mounted on opposite ends of a counter shaft supported
in bearings in the said radial arm or bracket.
To fully describe my invention, reference is made to the accompanying sheet
of drawings, forming a part of this specification, in which similar figures of
reference indicate corresponding parts in each of the views.
Figure 1, represents an elevation of my improved arrangement.
Figure 2, is a side view of the same with the gear wheels omitted in order to
more clearly show by the broken lines the position of the parts when the belt is
slackened.
Figure 3, is a sectional view of Figure 1 on the broken line a, b Figure 1 and
clearly shows the gear wheels.
Figures 4 and 5 are views of a modification hereinafter referred to.
Referring firstly to Figures 1, 2 and 3 the motor shaft 2 has a pinion 3 fixed
upon it with its teeth in mesh with the teeth of the spur wheel 5 on the counter-
shaft 6 mounted in bearings 7 in the bracket or support 9 pivoted at 10 to the
standard 12. The pivot 10 is concentric with the axis of the motor shaft. The
shaft 6 has a pulley 13 fixed upon it and connected by a belt 14 to the pulley_15
on the driving shaft 16 of the machine to which power is to be transmitted. The
rod 20 pivoted to the top of the support 9 is moved in any convenient way in the
direction of the arrow Figure 3 when it is desired to tighten the belt and drive
the machine after the motor has attained a proper speed. The rod is moved in
the reverse direction to the arrow when it is required to slacken the belt to stop
the machine..
As a modification the pulley 13 may be mounted upon the motor shaft 2 as
shown in Figure 4. This pulley. is "connected by a belt 14 to the pulley 15 in
this case mounted on the end of the counter shaft 6 to which the pinion 3 is fixed.
The pinion, engages the spur wheel 5 which in the modified arrangement is fixed
on the driving shaft 16 of the machine to which the power is to be transmitted
and the counter shaft 6 is supported in a pendant arm or bracket 9 loosely
mounted on the end of the shaft 16. The pendant arm or bracket 9 is arranged
to be moved as in the previously described arrangement to tighten or slacken
the belt 14.
Figure 5, is an elevation of Figure 4 without the pulley 13 and motor shaft.
Having now particularly described and ascertained the nature of my said
invention, and in what manner the same is to be performed, I declare that what
I claim is: -
1. The combination with the pinion 3 arranged to be driven by the electro-

page_text: motor and engaging a spur wheel 5 mounted in bearings formed in a support
pivoted on a centre concentric with said pinion, of a pulley driven by said spur
wheel and connected by a belt to a pulley arranged to drive the machine to which
power is to be transmitted, and means for moving the said support on its centre,
substantially as herein shown and described and illustrated with reference to
Figures 1, 2 and 3.
2. The combination with a driving pulley arranged to be driven by the electro
motor and connected by a belt to a driven pulley attached to a pinion wheel
engaging the driving wheel of the machine to which power is to be transmitted,
of a support for said pinion and driven pulley pivoted on a centre concentric with
said driving wheel, and means for moving said support, substantially as herein
shown and described and illustrated with reference to Figures 4 and 5.
Dated this 11th day of January 1900.
DRACUP & NOWELL.
Patent Agents, Bradford.