IMPROVEMENTS IN MACHINES FOR CLEANING KNIVES, FORKS AND OTHER ARTICLES
Year: 1882

page_text: PROVISIONAL SPECIFICATION left by Roughsedge Wallwork at the Office
of the Commissioners of Patents on the 28th June 1882.
ROUGHSEDGE WALLWORK of the firm of Henry Wallwork, & Co of Union.
Bridge Iron Works in the City of Manchester, in the County of Lancaster,
Engineers and Ironfounders. "IMPROVEMENTS IN MACHINES FOR CLEANING
KNIVES, FORKS AND OTHER ARTICLES,"
My invention consists in a combination and arrangement of mechanism for
cleaning knives, forks and other articles, in which two small india rubber discs are
used as rubbers and which are both rotated on horizontal axes in the same
direction face to face, the knife to be cleaned being passed between and across the
faces and centres of the two discs. One disc or rubber is secured on the side of a
spur wheel which is on a shaft in a bearing in the frame of the machine, and this
shaft has the handle upon it by which the shaft is rotated. The spur wheel on
this shaft drives a spur pinion on another shaft in bearings on the framing, which
shaft has another pinion upon it that gears with a spur wheel to which the other
disc is attached, which spur wheel is on an axis in a bearing allowing angular play,
this axis being pressed against by a lover and adjustable weight or by a spring
which allows the axis to give way when the knife is inserted and the india rubber
disc to accomodate itself to the inclination of the sides of the knife. The axis of
this diso is or may be made hollow rotating on a pin or centre which will permit
the required "play" and movement in the axis and disc. The framing is arranged
to form a "hopper" to receive and convey the emery powder or other material
used to the faces of the discs, and there is a chamber in the framing below the
discs to receive the powder passing or falling from the discs, which may be
repeatedly passed from the chamber to the hopper to be used again. If desired the
chamber is or may be formed by a small drawer which is removed at intervals and
its contents emptied into the hopper again. The two ends of the pinion shaft
project and overhang from their bearings, and upon their ends are placed india
rubber drums of various sizes and shapes suitable for cleaning the backs of knives
and for cleaning forks and other articles. By another modification the rubbers
are rotated on vertical axes and in opposite directions, and instead of spur wheels,
bevel wheels are used, which are both geared together by a level pinion on a

page_text: horizontal axis upon which the handle for rotating the shaft is placed. The upper
bevel wheel carrying the upper disc has flanges so as to form a hopper to receive
the "powder" which passes through a hole or holes in the disc to the faces of the
rubbers, and from the lower disc to a chamber formed in the framing below.
The axis of the upper disc is in this case weighted by a lever to press the face of 5
the
upper rubber against the face of the lower rubber or disc.
The handle for driving may be on the vertical axis.
The rubber disc while rotating upon a vertical axis may be driven by spur
wheels and pinions on another shaft as in the first modification.