Improvements in Channelling Machines for Boots and Shoes.
Year: 1896

page_text: Date of Application, 4th Aug., 1896
Complete Specification Left, 4th May, 1897-Accepted, 5th June, 1897
PROVISIONAL SPECIFICATION.
Improvements in Channelling Machines for Boots and Shoes.
I, WILLIAM HENRY DORMAN, of Green Hall, Stafford, Engineer do hereby declare
the nature of this invention to be as follows:-
This invention consists in applying to a machine used for channelling the soles of
boots and shoes an arrangement by which the same may be power driven.
In such an arrangement it is necessary that the operator should have very
complete control of the running of the machine so that he may be able to stop and
start with the greatest promptitude and without the least risk of over-running.
I provide a pulley or wheel with a conical or other driving surface which runs
loose on a shaft and is opposed to a fellow cone or plate which may be made to
engage so as to form a friction drive by means of a wedge and block or equivalent
arrangement. The cones and the wedge, or their equivalents, are held out of
engagement by springs and are brought into engagement when desired by a hand.
lever or treadle.
The driving cone is connected by reducing gears or worm and wheel with the
machine and a brake is provided which comes into action and stops the machine
instantly when the treadle or hand lever is released.
A bell crank or toggle may be employed instead of the wedge.
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 and in what manner the same is to be
performed, to be particularly described and ascertained in and by the following
statement:-
This invention consists in applying to a machine used for channelling the soles of
boots and shoes an arrangement by which the same may be power driven.
In such an arrangement it is necessary that the operator should have very
complete control of the running of the machine so that he may be able to stop and
start with the greatest promptitude and with the least risk of over running.
I provide a pulley or wheel with a conical or flat friction driving surface formed.
upon it and running loose upon a shaft or stud. Opposed to it is a fellow cone or
plate which may be made to engage so as to form a friction drive by means of a
wedge and block or equivalent arrangement. The cones and the wedge or their
equivalents are held out of engagement by springs and are brought into engagement
when desired by a hand lever or treadle.
The driving cone or friction plate is connected by reducing gears or worm and
wheel with the machine and a brake is provided which comes into action and stops
the machine instantly when the treadle or hand lever is released.

page_text: A bell crank or toggle may be employed to press the driving gear into engagement
instead of the wedge.
My invention is illustrated, in the form in which I prefer to carry it into effect,
by the accompanying drawings in which
Fig. 1. is a side elevation partly in section and
Fig. 2. is an end elevation of a power driven channelling machine.
The pulley a runs loose upon the fixed stud being retained in position by the
collar cand peg d. It is formed with a flat friction driving surface e which may be
engaged by a-fellow surface f formed upon the plate gand which surfaces may be
made conical if desired. A leather washer f' may be interposed to assist the driving
friction.
The wedge is carried on the hand lever i which is pivoted on a pinj in the.
machine frame and the handle may be pressed down by the operator so as to
raise the wedge h.
The block m is formed as a counter part of the wedge hand is interposed, upon
the stud b, between the wedge h and the boss n of the plate g.
A spring o tends to maintain the surfaces e and out of engagement and a
spring p to maintain the handle / raised and the wedge h withdrawn.
Upon the boss n is a pinion gearing with a wheel which is mounted on a
studs and carries another pinion t gearing with another wheel u upon the shaft v of
the machine.
The brake wo is so placed that as the plate is pushed out of engagement with
the pulley a, by the spring o when the wedge is withdrawn, engagement takes
place between the surface of the plate g and the brake surface y so as instantly to
stop the machine.
The machine is operated in the following manner :-
The operator takes the work in his one hand and manipulates it in the machine in
the ordinary manner but instead of turning a handle with the other hand as is usual
in channelling soles he lays hold of the handle b. (It is preferable to have a handle
rather than a treadle, as treadles are already fitted for other operations required in
connection with channelling machines.)
A belt being applied to the pulley a so as to revolve it and the operator having
previously placed his work properly in the machine he depresses the handle / so as
to raise the wedge h and through the block m press the plate into engagement
with the pulley a. The machine now runs until the channelling operation is
completed when the operator releases the haudle / which rises under the influence of
the spring p withdrawing the wedge and allowing the spring o to disengage the plate g
from the pulley a and force it against the brake w so as to instantly stop the
machine.
A gear wheel might be employed in place of the pulley a but is less convenient
and other means than the wedge h may be used to engage the friction driving
arrangement.
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. A channelling machine driven by power through the intervention of frictional
apparatus in order that the speed may be controlled at the will of the operator, as
described.
2. The herein described and illustrated arrangement for driving a channelling
machine by power.
:
W. H. DORMAN.