Improvements in or applicable to Knife Cleaning Machines.
Year: 1891

page_text: Date of Application, 10th Oct., 1891
Complete Specification Left. 9th Aug., 1892-Accepted, 10th Sept., 1892
PROVISIONAL SPECIFICATION.
Improvements in or applicable to Knife Cleaning Machines.
I, JOHN HARRISON, of Stamford, in the County of Lincoln, Engineer, do hereby
declare the nature of this invention to be as follows:-
This invention relates to improvements in or applicable to that class of knife
cleaning machines having a pair of revolving discs such as are described in the
Specification of former Letters Patent granted to me No. 7921 of 1887.
Such machines as hitherto constructed have not been provided with means for
efficiently supplying the emery or other cleaning powder to the surfaces of the
discs, and my invention has for object to remedy this defect.
For this purpose I form openings in the periphery of one or both of the discs
or disc-carriers, such openings extending spirally to an opening in the centre of the
disc so that, as the peripheries of the discs or disc-carriers revolve through the
trough containing the cleaning powder, the said powder is picked up and passes
through the said openings to the opening in the centre of the discs and is thus
conveyed between the cleaning surfaces.
Dated the 10th day of October 1891.
G. F. REDFERN & Co.,
4, South Street, Finsbury, London, Agents for the Applicant.
COMPLETE SPECIFICATION.
Improvements in or applicable to Knife Cleaning Machines.
I, JOHN HARRISON, of Stamford, in the County of Lincoln, 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:—
This invention relates to improvements in or applicable to that class of knife
cleaning machines having a pair of revolving discs such as are described in the
Specification of former Letters Patent granted to me No. 7921 of 1887.
Such machines as hitherto constructed have not been provided with means for
efficiently supplying the emery or other cleaning powder to the surfaces of the
discs, and my invention has for object to remedy this defect.
For this purpose I form openings in the periphery of one or both of the discs
or of one or both of the disc-carriers, such openings extending spirally to an
opening in the centre of the disc or discs.
To enable my invention to be fully understood I will describe how it can be
carried into effect by reference to the accompanying drawings, in which :-
Figure 1 is a longitudinal elevation, partly in section of a knife cleaning machine
embodying my improvements.
Figure 2 is an end elevation of the same.
Figures 3 and 4 are a plan and an elevation respectively drawn to an enlarged
scale of one of the disc-carriers.
a, a are the revolving discs between which the knives are introduced in order
to clean them; b, b' are the disc-carriers mounted upon pivot pins &, c¹ and provided
with pinions d, d¹ gearing with toothed wheels e, e' operated by the handle ƒ in the
usual manner.
9, 9 are the openings which I have here shewn by way of example formed in
the periphery of the disc-carrier 6 such openings extending spirally, as clearly
shewn at h, h in Figure 4, to openings i in the centres of the discs a, a¹ so that as

page_text: the periphery of the disc-carrier 6 revolves through the trough ; containing the
cleaning powder, the said powder is picked up and passes through the
openings g, g, h, h to the openings in the centres of the discs a, a' and is thus
conveyed between the cleaning surfaces of the discs.
Although I have shewn the openings for conveying the cleaning or polishing
powder from the trough to the discs formed in one of the disc-carriers it will be
obvious that they can be made in the other disc-carrier or in both the disc-carriers
or in either or both of the discs.
Having now particularly described and 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 :-
==
1. A knife cleaning machine of the class herein referred to, having openings
formed in the periphery of one or both of the discs or in one or both of the disc-
carriers, such openings extending spirally to an opening in the centre of the disc
or discs substantially as and for the purpose set forth.
2. The improved knife cleaning machine hereinbefore described and illustrated
in the accompanying drawing.
Dated the 9th day of August 1892.
G. F. REDFERN & Co.,
4, South Street, Finsbury, London, Agents for the Applicant.