Improvements in Machines for Cleaning and Polishing Knives, Forks, and the like.
Year: 1893

page_text: Date of Application, 20th May, 1893
Complete Specification Left, 20th Feb., 1894-Accepted, 7th Apr., 1894
DE PITICATION.
Improvements in Machines for Cleaning and Polishing Knives,
Forks, and the like.
I, SAMUEL EDWARDS of The Glen, Ladywell, Eccles, in the County of
Lancaster, Engineer, do hereby declare the nature of my invention to be as
follows:-
-
My invention relates to that class of knife cleaning machines in which the
cleaning and polishing is performed by two rubber covered rollers supplied with
emery or the like, the article to be cleaned being passed between the rollers,
which are driven or caused to revolve by toothed wheels gearing together and
turned by a handle.
To render such machines more effective, and to cause them to work without
noise, I proceed in the following manner, I make the frame of any suitable pattern
carrying two cleaning rollers, preferably covered with rubber, and I extend the
roller axles beyond the frame, and fix upon each axle a circular brush of such a
diameter that they will touch or nearly so, they will therefore run in the same
direction and at the same speed as the rollers from which they are separated by the
side of the frame.
One of the axles may be further extended to carry a small rubber for cleaning
the parts of articles requiring such a small roller.
The said brushes are intended for cleaning forks and spoons, and for use with
plate powder or similar material, but I prefer to cover the brushes with a metal.
frame having an opening in the top to receive a small block of solid polishing
material arranged to rest upon the top brush, so that when in use the top brush
will take off the block by attrition a suitable quantity of the material.
A side opening would be provided for the articles to be passed between the
brushes, and the under part made to catch the used powder, or open to allow its
exit as preferred.
Hitherto these machines have been made with spur or toothed driving wheels
which cause a considerable noise when at work, and tend to force the rollers apart;
I propose to avoid these causes of annoyance by dispensing with the toothed gearing
altogether and in their place to use chain driving gear.
I therefore fix upon each axle a chain wheel, and upon an adjustable stud I fix a
third wheel, and round the three wheels pass a loop of drive-chain; the stud.
wheel may be used simply as a means for tightening the chain, or it may be used as
the driving wheel, the handle being placed accordingly, it may also be larger or
smaller than the others. The tendency of the chain will be to draw the two rollers:
together, and thus put the required friction upon the articles. My arrangement of
outside brushes for cleaning forks may however be used in machines driven by
toothed wheels if desired. By the use of a drive-chain, I can if desirable drive
direct from one roller to the other.

page_text: COMPLETE SPECIFICATION.
Improvements in Machines for Cleaning and Polishing Knives,
Forks, and the like.
I SAMUEL EDWARDS of The Glen, Ladywell, Eccles, in the County of
Lancaster, 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 :—.
My invention relates to that class of knife-cleaning machines in which the
cleaning and polishing is performed by two rubber or rubber covered rollers,
supplied with emery or other polishing material, the article to be cleaned being
placed between the rollers which are caused to revolve by means of toothed wheels
turned by a handle.
My improvements are shown in the annexed sheets of drawings in which,
Fig. 1, is a front elevation of a machine made according to my invention.
Fig. 2, is a side elevation of machine showing the brushes for cleaning forks.
Fig. 3, shows the arrangement of gearing when the machine is driven from the
axle of top roller.
Fig. 4, ditto when driven from the stud wheel.
Fig. 5, top view of brushes and small roller.
Fig. 6, top part of frame showing spring for keeping the rollers apart.
The object of my invention is to render such machines more effective, and to
cause them to work without noise.
I make a frame consisting of two standards A, preferably fixed upon a base B,
and supporting the two rubber covered rollers C, the axles of which are carried in
bearings D, which may be either sliding or fixed as preferred.
I prefer them sliding or adjustable as shown in Fig. 6, so that the regulating
screw E, can either press the rollers together or draw them apart as desired, and
between the two bearings I place a coiled spring F, which tends to keep the rollers
apart and prevent undue friction.
Upon the ends of the roller axles G, I fix two wheels H, with teeth or other'
like projections or means for engaging with a driving chain I, these parts being
outside the standard.
The usual method of driving this class of knife cleaner is by means of cog
wheels gearing into each other; these wheels make a noise which is very
objectionable, especially in private houses, the advantages of my system are that
the machine is practically noiseless, and also that the action of the chain tends to
draw the rollers towards each other, and keep them true, while toothed wheels
endeavour to force them apart.
Two arrangements of the driving chain 1, and wheels H, are shown in Figs. 3,
and 4.
In Fig. 3, the driving handle J, is fixed upon the axle of the top roller G, and
the chain is passed round the intermediate wheel K, by moving which the chain can
be tightened as required.
In Fig. 4, the driving handle J, is fixed upon the axle of the intermediate
wheel K, which is provided with teeth or projections to engage with and drive the
chain.
The opposite ends of the roller axles are extended through the side standard A,
and are provided with circular brushes L, which revolve with the spindles, the
bristles being in contact or nearly so, and upon the top spindle or axle which
projects beyond the bottom spindle or axle G, I fix a small rubber roller M, for
cleaning the bolsters of knives, but the use of this roller and its position on the
machine are not material.

page_text: Over these brushes for cleaning forks, spoons and the like, I fix a casing N, with
one or more openings O, to admit the articles to be cleaned and formed above the
top brush into a hopper P, or receiver of suitable construction to receive a block
of solid polishing material Q, that will rest upon the top brush, so that when the
machine is in use, the top brush will take off by attrition a suitable quantity of the
material.
Means may be employed to raise the block from the brush when it is not
required, if found desirable, and the lower part of the casing may have a door or
slide to permit the escape of the powder that will accumulate there.
My arrangement of brushes and casing as before described may be applied to
machines driven by cogwheels instead of drive chain if desired.
Having now particularly described and ascertained the nature of my said inven-
tion and in what manner the same is to be carried into practice, I declare that
what I claim is :
1. In a knife cleaning machine, the means for driving the rollers consisting of a
chain I, in combination with the two toothed wheels H, and an intermediate plain
or toothed wheel K, arranged substantially as hereinbefore described and shown in
the drawings.
2. In a knife cleaning machine, such as hereinbefore described, the arrangement
of two brushes L, upon the roller axles, with a casing N, to separate them from the
other parts and to keep the polishing materials distinct, such brushes being either
placed inside or outside the standard A, substantially as described and whether the
rollers are driven by chain or gearing.
3. The general construction and arrangement of the various parts constituting
my improved knife cleaning machine, viz., the chain driving gear, the two rubber
rollers having upon their axles brushes or equivalent revolving polishers, protected
by a casing to carry and catch the polishing material, substantially as hereinbefore
described and illustrated.
ROBT. F. DRURY, C.P.A.,
Bank Buildings, George Street, Sheffield, Agent for Applicant.
Anninh
Con
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