An Improved Knife Cleaning Machine.
Year: 1892

page_text: Date of Application, 13th Feb., 1892
Complete Specification Left, 9th Nov., 1892-Accepted, 10th Dec., 1992
PROVISIONAL SPECIFICATION.
An Improved Knife Cleaning Machine.
I THOMAS JENKS of No. 3 Alexander Buildings Grosvenor Bath in the County
of Somerset Cotton Agent do hereby declare the nature of this invention to be as
follows:-
This machine is constructed after the following principle. Enclosed in an outer
case or cylinder fixed lengthways on a stand and having a wide opening along the
centre of the front side, are a number of discs formed of wood, paper, or other hard
material and faced or coated on both sides (except in case of the two end ones)
either with linoleum, cork carpet, huff leather, felt, or other polishing material or
materials and having round the outer edge or circumference a strip of buff leather
or other soft material.
These discs are loosely placed side by side upon a centre spindle turned by an
ordinary handle or in case of being worked by steam or other power by a pulley.
The discs are pressed together by two flat metal plates one at each end placed in
like manner loose upon the spindle and acted upon by loose collars adjusted by nuts
screwed upon each end of the spindle. These loose collars run in a bearing at each
end of the cylinder or outer case. Along the front of the cylinder and parallel
with the opening is a rack or fixture forming part of the stand of the machine
adjusted to receive the handles of the knives which are held by flat springs
attached to and acted upon by a lid or cover which is closed over them like a box
lid and held by a spring catch or other simple contrivance. At each end of this lid
or cover is a graduated metal point which when the lid is closed over upon the
knife handles extends a little into the body of the cylinder but outside of the metal
plates at each end of the row of polishing discs and gradually compresses them
together in the front part of their circumference. The same pressure is attained at
an opposite point at the back part of their circumference by two thumb screws fixed
one in each end of the cylinder or outer case. Along and inside the top of the
cylinder in a suitable fixture over the discs is a small narrow drawer having a
perforated bottom and containing emery or other polishing powder and corre-
sponding in dimensions to a similar drawer along the bottom of the cylinder
intended to catch the emery powder so that, these drawers being interchangeable,
the powder can be re-used without waste till exhausted. The blades of the knives
are placed between the discs to be cleaned in such numbers as the machine is
constructed to contain. To clean a carving or other large sized knife a small
aperture is left in the back part of the cylinder at a point opposite the rack so as to
enable the long blade to pass completely through.
Dated thie 19th day of Febru 1892
'
COMPLETE SPECIFICATION.
An Improved Knife Cleaning Machine.
1 THOMAS JENKS of 3 Alexander Buildings Grosvenor Bath in the County of
Somerset Cotton Agent 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 machine is constructed after the following principle. Enclosed in an outer
case or cylinder A fixed lengthways on a stand and having a wide opening along
ID 71

page_text: the centre of the front side and openings also along the top and bottom are a
number of discs B B formed of wood, paper, or other hard material and faced or
coated on both sides (except in case of the two end ones which require facing on
one side only) either with linoleum, cork-carpet, buff leather, felt, or other polishing
material or materials. These discs are loosely placed side by side upon a centre
spindle C turned by an ordinary handle or in case of being worked by steam or
other power by a pulley.
The discs are pressed together by two flat metal plates N one at each end placed
in like manner loose upon the spindle and acted upon by loose collars D D adjusted
by nuts screwed upon each end of the spindle. These loose collars run in a bearing
at each end of the cylinder or outer case. Along the front of the cylinder and
parallel with the opening in same is a rack or fixture E forming part of the
stand of the machine adjusted to receive the handles of the knives which are placed
upon and held by flat springs xxx attached to this rack and acted upon by a lid
or cover (not shown in drawing) which is closed over them (the knife handles) like
a box lid and held by a spring catch or other simple contrivance. In order
to obtain pressure upon the points or thin ends of the knives it is necessary to
compress the polishing discs together at the back of the machine and this pressure
is attained by two adjustable steel thumb screws F one in each end of the cylinder
or outer case bearing upon the flat metal plates N on spindle.
Along the top of cylinder in a suitable fixture G above the opening over the
discs is a small narrow drawer H' having a perforated bottom and containing
emery or other polishing powder and corresponding in dimensions to a similar
drawer H (along the bottom of the cylinder) intended to catch the emery
powder so that these drawers being interchangeable the powder can be re-used
without waste till exhausted.
Fixed to the inside of cylinder, underneath the top drawer holding the emery
powder, is a metal bar J carrying a sufficient number of hollow metal pegs
or spikes which extend vertically downwards between the polishing discs so as to
slightly divide them while revolving and enable the powder to fall between them.
The blades of the knives are placed between the discs to be cleaned in such numbers
as the machine may be constructed to contain. To clean a carving or other large
sized knife a small aperture is left in the back part of cylinder at a point opposite
the rack so as to enable the long blade to pass completely through in case of its
being longer than the diameter of the polishing discs & cylinder.
Having now particularly described & ascertained the nature of my said inven-
tion & in what manner it is to be performed I declare that what I claim is
1. The use of a greater number than two polishing discs at one time for the
purpose of a knife cleaning machine and the method described of compressing them
together at the back by the thumb screws F.
2. The arrangement of the top & bottom drawers or receptacles for the
polishing powder and the vertical pegs or tubes for passing the powder between
the discs.
3. The general arrangement of parts shown in accompanying drawing.