Improvements connected with Knives of Mincing Machines, also in their Supports and Mode of Fixing them in Position in Series, and in the Frame or Casing.
Year: 1895

page_text: Date of Application, 10th Apr., 1895
Complete Specification Left, 10th Jan., 1898-Accepted, 15th Feb., 1896
PROVISIONAL SPECIFICATION.
Improvements connected with Knives of Mincing Machines, also in
their Supports and Mode of Fixing them in Position in Series,
and in the Frame or Casing.
I, HENRY SAMUEL NYE, of the Firm Samuel Nye & Co. of 139 Oxford Street,
County of London, Mincing Machine Manufacturer, do hereby declare the nature
of this invention to be as follows :-
This invention relates to certain details of construction, to position of appliances,
and to methods of fitting and securing the knives in series and their supports in
the frame or casing.
According to the present method of fitting knives in mincing machines, great
difficulty is experienced in removing and in separating them for sharpening or for
cleansing purposes. Another inconvenience is felt from the insecure means of
fixing the knives in position, their tendency being to become loose and often shift;
a further disadvantage is their tendency to be sucked from the frame or casing
by the clinging action of the meat while being torn and lifted by the propeller
blades.
All the foregoing objections are obviated by my improvements as follows:-
I make each knife singly with a tapered tang, and perforated as to be inter-
changeable. I set a series of these in a gauge and mould a backing leaving the
perforated portion of each tang exposed.
The knives and the backing are not united but I secure them to the backing by
a cottar or pin, the diameter of which just fits the perforations, and being in contact
with the backing draws the shoulders of the knife blades rigidly to the front or
opposite face of the backing.
The backing has channeled or grooved edges to be slid into a recess or recesses
of the casing, which is generally circular, so that the recesses only require their
edges to be shaped or cut tangentially for the grooves of the backing to engage
over and under or upon..
'
The recess or recesses in the casing may be at the side, bottom, top, or other
part, and in one only or in both halves, and the tangs and backs of the backings
may be exposed or be covered by a shutter or a part of the casing formed in the
casting.
The backing may be previously moulded or otherwise prepared and holes made
for the knife tangs to enter.

page_text: >
Improvements connected with Knives of Mincing Machines, also in
their Supports and Mode of Fixing them in Position in Series,
and in the Frame or Casing.
I HENRY SAMUEL NYE of the Firm Samuel Nye and Co. of 139 Oxford Street,
County of London, Mincing Machine 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 :-
. 1
This invention relates to certain details of construction, to position of appliances
and to methods of fitting and securing the knives in series and their supports in the
frame or casing.
According to the present method of fitting knives in mincing machines great
difficulty is experienced in removing and in separating them for renewing or
replacing with new blades. Another inconvenience is felt from the insecure
means of fixing the knives in position, their tendency being to become loose and
often shift; a further disadvantage is their tendency to be drawn from the frame
or casing by the clinging action of the meat while being cut and lifted by the
propeller blades.
All the foregoing objections are obviated by my improvements as follows:-
I make each knife singly with a tapered tang and perforated so as to be inter-
changeable I set a series of these in a gauge and mould a backing leaving. the
perforated portion of each tang exposed.
The knives and the backing are not united but I secure them to the backing by
a cottar or pin the diameter of which just fits the perforations and being in contact
with the backing draws the shoulders of the knife blades rigidly to the front or.
opposite face of the backing.
The backing has channeled or grooved edges to be slid into a recess or recesses
of the casing which is generally circular so that the recesses only require their
edges to be shaped or cut tangentially for the grooves of the backing to engage
over and under or upon.
The recess or recesses in the casing may be at the side, bottom top or other part
and in one only or in both halves and the tangs and backs of the backings may
be exposed or be covered by a shutter or a part of the casing formed in the
casting.
.
The backing may be previously moulded or otherwise prepared and holes made.
for the knife tangs to enter.
My invention is represented in the annexed drawings.
1
Figure 1 perspective elevation of a knife A of which any number can..be
associated in or with a backing block B, Figure 2, and locked in their respective
positions by a cottar or pin C as at Figure 3. The backing block B is dovetailed
or channelled along the edges as at D and V ribs E; E, are upon the meeting
faces F. F, of the half cases G. G, of the mincing machine as in the side elevation
Figure 4 and section Figure 5.1
Each knife has a tapered tang H to fit in any of the tapered slot holes in the
backing block B each tang being perforated for the passage and reception of the
cottar or pin C.
For a given size of machine the knives A, backing block B and pin C with the
two halves G. G. of the casing are interchangeable, easily disconnected and
separated and replaced, the upper edge taper a of each tang being at a different
angle to that of the lower edge b to prevent mistakes.
In Figures 4 and 5 I have shown the knives and backing blocks slipped or lodged
in either side in line with the axle J on which the propeller blades K are carried

page_text: in the well known manner said blades being arranged spirally and at fixed distances
apart for passing into and between the knives A as the blades K. K are rotated.
At Figure 6 I show a series of knives A in a backing block B for being slid
into a channel formed for its reception in the bottom half of the casing G. G.
Figure 7 end elevation
Figure 8, plan,
the grooving being in the edges of the backing block and the V ribs on lower half
casing only, these being in a chamber provided for the reception of the block by
a sliding action from either end after the nozzle has been removed, said block
having a channel L into which the rim of the nozzle engages.
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
1. As my improvements connected with knives of mincing machines constructing
Buch knives with tapered tangs and with holes for being secured in position in series
by a cottar or pin as described and substantially as represented.
2. In mincing machines, constructing backing blocks with angled slot holes for
reception of knives-capable of being secured in series therein by a cottar or pin
as described and substantially as represented in the annexed drawings.
3. In mincing machines, constructing knife-carrying blocks with grooves in edges
for locating said blocks in such machines as and in the manner set forth and
substantially as shown in the annexed drawings.
4. In mincing machines making the knives in such manner that they are
removable and interchangeable for given sizes of machines and fixable in backing
blocks as described and substantially as shown by the drawings.
5. Making the backing or knife carrying blocks of mincing machines in
determined sizes and interchangeable, whether the knives be cast in such blocks.
or be prepared for reception of interchangeable or other knives as set forth and
represented.
Dated this 10th day of January 1896
H. GARDNER,
Patent Agent, 166 Fleet Street, London,
Agent for the said H. S. Nye.