Improvements in the Transmission and Application of Power to Paper-making Machines..
Year: 1896

page_text: Date of Application, 28th Dec., 1896
Complete Specification Left, 22nd Sept., 1897-Accepted, 30th Oct., 1897
PROVISIONAL SPECIFICATION.
Improvements in the Transmission and Application of Power to
Paper-making Machines..
I, THOMAS TEMPLETON MACKIE LUMSDEN, Engineer, Milton House Works,
Edinburgh, do hereby declare the nature of this invention-to be as follows:-
This invention has reference to the method of transmitting the power applied by
the engine or other motor to the several points in a paper-making machine where it
has to be applied, and the invention is intended to dispense with quick speed bevel
gearing or slow speed belt driving, and enable the power to be transmitted at a
high rate of speed up to each point where it has to be applied, and also to avoid the
dangers resulting from "bulking" the pulleys. From the engine I carry a shaft in line
with the drying cylinders, and if necessary connect therewith the usual removable spur
or change wheels, and also the usual intermediate fixed spur wheels all in substantially
the manner presently in frequent use. From this point I carry a shaft to drive the
two centre rolls in the lower tier by a pinion keyed thereon placed between these
two rolls and gearing into the spur wheel fixed on the end of the roll shafts, also in
the usual manner but instead of transinitting the power from this central point to
the two ends of the machine by means of ordinary pulleys, which renders it
impossible to effectually reduce or increase the speed without altering the relative
proportional sizes of the two pulleys in each case by "bulking" or otherwise I
employ for each drive a conical pulley carrying in each case a belt which works on a
similar conical pulley fixed on a counter shaft which also bears a pinion wheel
geared into a spur wheel which is keyed on the shaft of the roll to be driven; thus
effecting the necessary reduction or increase in the speed communicated to the roll.
The method above described enables a high speed of belt to be maintained in each
case up to the actual point where the power is to be applied to the machine and avoids
"bulking" jerking or irregularity, the shifting of the speeds being made directly by
wheel and screw from the front of the machine, without the attendant requiring to
go to the back of the machine to shift the speeds.
The placing of the engine in a central position and the above manner of
transmitting the power has also the effect of equalising the driving strains on the
shafting.
Dated this 24th day of December 1896.
THOS. T. M. LUMSDEN.
COMPLETE SPECIFICATION.
Improvements in the Transmission and Application of Power to
Paper-making Machines.
I, THOMAS TEMPLETON MACKIE LUMSDEN, Engineer, Milton House Works,
Edinburgh, do hereby declare the nature of this invention and in what manner the
Price 8d1
COMPLETE SPECIFICATION.
Improvements in the Transmission and Application of Power to
Paper-making Machines.
I, THOMAS TEMPLETON MACKIE LUMSDEN, Engineer, Milton House Works,
Edinburgh, do hereby declare the nature of this invention and in what manner the
[Price 8d.I

page_text: same is to be performed, to be particularly described and ascertained in and by the
following statement :-
This Invention has reference to the methods of transmitting the power from the
engine or other motor to the several points in a paper-making machine where it has
to be applied, and the invention. is intended to dispense with quick speed
bevel gearing or slow speed belt driving, and enable the power to be transmitted at
a bigh rate of speed up to each point where it has to be applied, and also to avoid
the dangers resulting from "bulking" the pulleys.
As shown in the accompanying diagrains representing a paper making machine in
elevation at Figure 1 and in plan at Figure 2, I connect to the shaft of the engine A
by gearing B, a shaft C in line with the drying cylinders and connect therewith
the usual removable spur or change wheels, and also the usual intermediate
fixed spur wheels D all in substantially the manner presently in frequent use. From
this point I carry a shaft E to drive the two centre rolls in the lower tier, by a
pinion keyed thereon, placed between these two rolls and gearing into the
spur wheels G fixed on the end of the roll shafts, also in the usual manner; but
instead of transmitting the power from this central point to the two ends of the
machine by means of ordinary pulleys, which renders it impossible to effectually
reduce or increase the speed without altering the relative proportional sizes of the
two pulleys in each case by "bulking" or otherwise, I employ for each drive a
conical pulley II carrying in each case a belt I which works on a similar conical
pulley fixed on a counter-shaft J which also bears a pinion wheel K geared into a
spur wheel L which is keyed on the shaft of the roll to be driven; thus effecting
the necessary reduction or increse in the speed communicated to the roll.
The method above described enables a high speed of belt to be maintained in
each case up to the actual point where the power is to be applied to the
machine and avoids "bulking" jerking or irregularity, the shifting of the speeds
being made directly by wheel and screw from the front of the machine, without
the attendant requiring to go to the back of the machine to shift the speeds.
The placing of the engine in a central position and the above manner of
transmitting the power has also the effect of equalising the driving strains on the
shafting.
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-
The improved arrangement of driving gear for the transmission and application
of power to paper making machines substantially as described.
Dated this 21st day of September 1897
CRUIKSHANK & FAIRWEATHER,
Chartered Patent Agents,
62 Saint Vincent Street, Glasgow, Agents for the Applicant.