Improvements in Apparatus for Cleaning Knives.
Year: 1890

page_text: Date of Application, 4th July, 1890
Complete Specification Left, 2nd Feb., 1891-Accepted, 18th Apr., 1891
PROVISIONAL SPECIFICATION.
Improvements in Apparatus for Cleaning Knives.
GEORGE MILKINS COOMER, Cardboard Box Manufacturer, residing at
5, Dalrymple Road, in the City of Bristol, carrying on business at 6, Care Street,
in the said City of Bristol, do hereby declare the nature of this invention to be as
follows:-
The knife cleaner will consist of a wooden slab, with a slot cut in it, in which
will be placed a movable cramp, worked by two thumb screws, capable of taking a
number of knives, which when fastened into the cramp will rest on the wooden
slab, and be cleaned by a brush, worked by the operator, and powder.
G. M. COOMER.
COMPLETE SPECIFICATION.
Improvements in Apparatus for Cleaning Knives.
GEORGE MILKINS COOMER, of 5, Dalrymple Road, Bristol, carrying on business
as a Cardboard Box Manufacturer at 7, Cave Street, Bristol, 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 :—
The knife cleaner consists of a board or slab, covered with kamptulicon or other
material, in which two slots are cut, one of which forms a box, with cover, to
contain the powder used with the cleaner, and in the other is fixed the cramp which
keeps the knives rigid and in a proper position during the process of cleaning.
The pressure of the cramp is regulated by means of a screw in the centre, worked
by a hand from above, and raised by two spiral springs one at each end. The
knives, when fixed in the machine rest flat upon the surface of the board or slab.
and are cleaned with any ordinary powder, and a brush held in the hand of the
operator.
The accompanying plan shews the board complete.
The cramp is shewn in section "A A." It consists of a piece of hard timber or
metal (1) with six divisions and is lined with india rubber (2) in order to obtain
pressure and prevent injury to the handles of the knives. It works upon two
metal pins, (3) one at each end, covered with spiral springs (4). The screw, by
means of which the pressure is applied, passes through the cramp and sinks into
a metal plate, in which the screw is tapped, fixed underneath the board or slab, and
worked by the handle (5). The powder box (6) is cut into the surface of
the board or slab and the cover retained in its position by two brass fastenings.
Section B B shews the screw (7) cramp (8) and metal plate (9) into which the
screw works. The brush (10) is composed of a series of rows of hard bristle or
fibre interspersed at different places with strips of buffskin or leather (11) about a
quarter of an inch longer than the hairs of the brush.
The cleaner may be made in different sizes to take a greater or less number of
knives.
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
Its superiority over other knife cleaning apparatus inasmuch as it has no complex

page_text: machinery that can get out of order, that it will clean any size knife, that it cleans
the knife right up the handle, and is so simple it can be worked by any one.
Dated this 30th day of January 1891.
GEORGE MILKINGS COOMER.