Improvements in or connected with Knife Cleaning Machines.
Year: 1898

page_text: PROVISIONAL SPECIFICATION.
Improvements in or connected with Knife Cleaning Machines.
I, JAMES OSBORN SPONG, of 226, High Holborn, London, Domestic Appliances
Manufacturer, do hereby declare the nature of this invention to be as follows:-
This invention relates to three special and important improvements connected
with knife cleaning machines, and consists First of a casting or drop forging
constituting a combined transverse support to the drum portion and as a cross
tie bar to the frame. Secondly of an elastic coated metal ball for free rolling in
a pocket or slipper affixable in or to the drum of the machine to prevent the
handle or cleaning discs being rotated backwardly, the ball rolling freely in the
pocket when the machine is being properly worked but becomes jammed between
the edge of one or both of the discs and the back of the pocket in which it other-
wise rolls.
:
Thirdly to means for adjusting the pressure or touch of the two discs for
equality of pressure without reference to the thickness of the knife blades.
According to my said invention, I make my combined drum support and cross
tie in one piece with screw tips at each end to go through the frame and he
tightened up by nuts. The central portion is shaped for the edges of the side
to rest in or on and with a flat for the band to sit on, there being holes in the
flat part for screws which are caused to enter the band from the outside for
fixing one to the other.
Formerly, these screws were put through from the inside of the band and into
a cross piece of wood as a bearer on the outside, through which wood bearer a cross
tie bolt was passed for connecting the two side frames.
According to another part of my invention, the pocket or slipper is passed into
a hole cut in the band, and the inner face of the pocket may be striated or
chequered to offer resistance to the back rolling of the ball, which for the purpose
of my invention is of india rubber (cured) on the exterior, and contains metal of
spherical shape to weight it, which weight is utilised to keep the ball well in
touch with the disc of the pocket, and noiseless while rolling.
The outer and broader part of the pocket may be outside and away from the
parts where the knives are entered.
As a modification to the metal weighted ball, a weighted vet flexible surfaced
rod, or bar, or bars, or a plain wooden or other rod, solid or hollow weighted, or not,
may be fitted loosely in an inclined receiver or pocket of the inner casing of the
machine to prevent a reverse motion being given to the machine from any part of
its rotation, the flexible yet weighted rod acting upon the edge of either or upon
both of the "discs."
A further improvement consists in the employment of one or more plate or other
springs which may be affixed to the casing of the machine, or hinged thereto, and
forked to embrace the central spindle, the adjustment being effected by a bolt or

page_text: screw to give the necessary pressure or bite, yet yielding property to the two
discs, by which the cleaning is accomplished.
H. GARDNER,
Patent Agent, 166, Fleet Street, London.
Agent for the said James Osborn Spong.
Improvements in or connected with Knife Cleaning Machines.
I, JAMES OSBORN SPONG, of 226, High Holborn, London, Domestic Appliances
Manufacturer, 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 First: to a casting or drop forging constituting a com-
bined transverse support to the drum portion and as a cross tie bar to the frame
of a knife cleaning machine.
According to the first part of my said invention, and as I show on the annexed
sheet of drawings, Figure 1 outer face view, Figure 2 section on line a, a, of
Figure 1 of a brace or tie for affixing the drum and the cover to the frame of a
knife cleaning machine, as indicated at Figure 3. Figure 4 outer face elevation
of a brace or tie for connecting the drum only to the frame, Figure 5 section
through b, b, of Figure 4. I make my combined drum support and cross tie in one
piece A with screw tips 13 at each end to go through the frame C and be tightened
up by nuts D).
The ends of the central portion are shaped at E, E, for the
edges F, F, of the sides G, G, to rest in or on and with a flat or nearly flat
portion H for the band I to sit on, there being holes in the flat part H for screws
which are caused to enter the band I from the outside for fixing one to the
other.
Formerly, these screws were put through from the inside of the band and into
a cross piece of wood as a bearer on the outside, through which wood bearer a cross
tie bolt was passed for connecting the two side frames.
The second part of my invention is shown at Figure 6 and detached at Figure 7,
it consists of a loose rod K of metal with a rubber exterior to roll in contact with
the edges of the cleaning dises L when the handle is turned in the proper direc-
tion but on the slightest reverse motion being given to the machine from any
part of its rotation, the rod still acting upon the edges of both "discs" becomes
forced against the inclined stop M and prevents back rotation. N is a check to
locate the rolling rod K leaving its pocket from any cause. P, represents a fall
down flap to enclose the casing band I.
Having now particularly described and ascertained the nature of the said inven-
tion and in what manner the same is to be performed, I declare that what I
claim is:
1. As my improvements in knife cleaning machines, the details herein set forth
and shown at Figures 1, 2, and 6 of the annexed drawings.
2. In or to a knife cleaning machine, the combined stay for frame and drum
support, substantially as shown at Figures 1 and 4, and its application in the
manner described.
3. In or to a knife cleaning machine, a free roller, such as K, arranged to roll

page_text: on the edges of the cleaning discs L and between them and an incline, such as M,
as and for the purposes described.
H. GARDNER,
Patent Agent, 166, Fleet Street, London.
Agent for the said James Osborn Spong.