Improvements in Channelling Machines for Boots and Shoes.
Year: 1898

page_text: PROVISIONAL SPECIFICATION.
Improvements in Channelling Machines for Boots and Shoes.
I, WILLIAM HENRY DORMAN, of The Green Hall, Stafford, Engineer, do hereby
declare the nature of this invention to be as follows:-
The object of this invention is to improve the construction of power driven
channelling machines so that they can be driven at any desired speed, whether
faster or slower, and also be instantly stopped and started by the operator.
In channelling soles having pointed or spiked toes it is found necessary to
drive the machine at a very slow speed when approaching and tuining the toe
and at the same time have such a command of the dive as to be able instantly
to stop, while along the sides of the sole it is advantageous to drive the machine
considerably faster.
When
I provide a driving pulley with a flat disc on one side of it and at light angles
thereto I mount another disc the periphery of which 18 frictionally in engagement
with the flat disc so that the one drives the other The flat disc has a hollow
centre and can be moved by the operator across the edge of the other disc
the outer edge of the flat disc engages the edge dise the machine runs at its
greatest velocity and when the inner edge of the flat disc engages, the machine
runs at its least velocity, while, when the flat disc is moved by the operator
until its hollow centre causes it to lose contact with the edge disc the machine
stops altogether.
The operator is provided with a hand lever or if desued a treadle--by means
of which and suitable connections such as rack gearing and a slide he traverses
the pulley and its flat disc across the edge of the other disc so as to stop and
start or drive at faster or slower speed as he desnes. A limited spung keeps
the discs in driving contact and the slide may be mounted upon 1ollers or balls
to reduce friction and a take up is introduced to maintain the belt sufficiently
tight Reducing gears are preferably introduced between the friction gearing
and the feed wheels of the machine so that a sufficiently high speed may be
maintained at the point of fictional contact of the discs
If desired the driving pulley disc may be stationary and the other disc be
caused to slide across it

page_text: formed, to be particularly described and ascertained in and by the following
statement
The object of this invention is to improve the construction of power driven
channelling machines so that they can be driven at any desired speed, whether
faster or slower, and also be instantly stopped and started by the operator.
In channelling soles having pointed or spiked toes it is found necessary to
drive the machine at a very slow speed when approaching and turning the toe
and at the same time have such a command of the drive as to be able instantly
to stop, while along the sides of the sole it is advantageous to drive the machine
considerably faster
My invention 18 illustrated by the accompanying drawings in which
Fig 1 is a front view of the machine.
Fig 216 a back view.
Fig 3 is an end view
C
Fig 4 18 a detailed plan much enlarged and partly in section.
I provide a driving pulley a having a flat disc b formed on one side of it, and
at night angles thereto I mount another disc the periphery of which 18
frictionally in engagement with the flat disc so that the one drives the other
The flat disc 6 has a hollow centre d and can be moved by the operator across
the edge of the other disc When the outer edge e of the flat disc 6 engages the
edge disc c the machine runs at its greatest velocity, and when the inner edge f
of the flat disc b engages, the machine runs at its least velocity, while when
the flat disc b 18 moved by the operator until its hollow centre d causes it to lose
contact with the edge disc c the machine stops altogether.
k
8
The operator is provided with a hand lever or if desired a treadle- by
means of which and suitable connections such as a quadranth rack and a slide j
he traverses the pulley a and its flat disc b across the edge of the other disc o
so as to stop and start or drive at faster or slower speed as he desires. A limited
spring keeps the discs b and c in driving contact and the slide, may be mounted'
upon rollers or balls to reduce fiction A spring take up pulley is introduced
to maintain the driving belt sufficiently tight Reducing gears m, n, o, pare
introduced between the friction gearing b, c, and the feed wheels q, r of the
machine so that a sufficiently high speed may be maintained at the point of
frictional contacts of the discs
If desired the driving pulley disc may be stationary and the other disc be
caused to slide across it
In the enlarged sectional plan Fig 4 the variable speed driving arrangement
19 clearly shown:-
The driving pulley a 18 mounted on the shaft a¹ being thereon cramped by the
set screw a³ The shaft a 18 free to revolve and also to slide endwise in the
bearing a³ and is made tubular at a to receive the pressure spring and anti-
friction washers 11, 12, 13. The end pressure of the spring & can be regulated by
the set screw which is carried in the small bracket and provided with the
lock nut *.
The lubricator supplies oil to the washers 1, 1, ³, a hole being drilled
through the screw for the oil to
pass
The collar prevents the shaft al coming too far forward when the depression d
18 opposite the disc c
The disc is moved across the disc c by the handle g which is mounted on the
shaft carried in the bearings, and provided with the toothed quadiant h
which engages the rack ? This rack is mounted on the sliding bracket
which carries the pulley a and is free to slide in the way prepared for it in
the main frame w. The movement of the bracket 19 limited by the stop piece r
and screw y
'a
The stud z carries the spring take up arm ¹ and the stud 2 carries the disc c

page_text: 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 18
-
In a power driven channelling machine a pair of frictional driving discs so
arranged that the one may be traveised across the other by the operator duing
the channelling operation for the purpose of regulating the speed of the machine,
substantially as herein described and illustrated.