Improvements in Rotary Knife Cleaning Machines.
Year: 1891

page_text: Date of Application, 25th July, 1891-Accepted, 29th Aug., 1891
COMPLETE SPECIFICATION.
Improvements in Rotary Knife Cleaning Machines.
I, JOSEPH WARREN of 55 St. Pauls Square, Birmingham in the County of
Warwick Manufacturer do hereby declare the nature of my said 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 has for its object improvements in rotary knife cleaning machines
which I call the "Ironclad," and has particular reference to the iron cased
machines by which considerable improvement in the appearance is effected and at
the same time a much stronger and more servicable machine obtained. My
improved mode of fitting the casing also allows of the internal parts being inserted
with little or no difficulty thus making the wearing parts interchangable which is of
considerable importance.
In order that my invention may be clearly understood and more easily carried
into practice I have appended hereunto a double sized sheet of drawings upon
which I have fully illustrated the nature of my said improvements applied to a
rotary machine for cleaning two table knives and one carver and from which
its application for cleaning a more or less number of knives will readily be
understood.
Figure 1., is a general perspective view of the exterior of one of my improved
machines for cleaning two knives and one carver.
Figure 2., is an internal view of one half of the drums with all the internal parts,
except the spindle, removed.
Figure 3., is a vertical transverse section through Figure 1.
Figure 4., shews modifications of the joints between the two halves of the drums
of the machine.
In carrying my invention into effect I cast the body casing or drums of the
machine in two halves A and A' upon each half corresponding projections are
formed such as a on A and a on A' to receive the nickle plated, brass, or other
plugs B for the stay of the haft of the knife and similar projections are formed for
receiving the carver while the legs a' and a are formed on the one half A at a*,
and as on the other half A' while both halves are formed with a bearing to receive
the ends of the spindle D. The two halves A & A are provided at the joint with
the flanges all which are grooved on the surface to receive the packing a³ which is
secured round the one half by cement so that when the two halves are placed
together and there secured by the pins h', h³, h³, and * the packing prevents any
of the emery powder from escaping through the joint.
Before placing the two halves A and A' of the casing together the spindle with
the inside parts attached thereto is inserted the handle parts d' and d³ being removed
from the end of the spindle to allow of this being effected.
The pins h, h, h³, and hª, are provided with square necks which fit into corre-
sponding square holes formed in the projections on the one half of the casing to
enable the nuts to be readily removed without holding the heads of the pins.
Each half A and A' is so shaped as to form the necessary apertures when
attached together for the insertion of the knives and for the insertion of the emery
the latter being covered by the stopper cap or plug F when cleaning the knives
and when not in use for the supply of emery.
In place of grooving the edges of each half I may rebate them as shewn by a"
in Figure 4 a little liberty being allowed in the joint for the insertion of a thickness
of felt or the one half A' may be worked with a grooved as shewn by a 10 and the
other half A with a tongue liberty being allowed between the two for a strip of
felt or other packing.

page_text: The plugs B to keep the knives in position are secured by the pins h³ which pass
through them and are provided with the shoulders which butt against the
projections on each half thereby forming a strong support when pinned together
by the screw pins.
Having now particularly described & 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
The improvements in knife cleaning machines consisting of the drum or casing
formed of iron in two halves A. and A' with stay plugs B and the whole fitted
together as and for the purpose herein described and substantially such as shewn
upon the accompanying drawings.
Dated this 24th day of July 1891
GEORGE BARKER,
77, Colmore Row, Birmingham, Agent for Applicant.