Improvements in Mincing Machines.
Year: 1896

page_text: Date of Application, 17th Mar., 1896-Accepted, 18th Apr., 1896
COMPLETE SPECIFICATION.
Improvements in Mincing Machines.
I, FREDERICK WILLIAM FOLLOWs, of Froxmer Street, Gorton, in the
County of Lancaster, Agricultural 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 :-
Tbis invention relates to that class of mincer in which the meat is cut by the.
blades of rotating screw cutters against stationary or fixed cutters and is designed
to provide a screw cutter by which the meat can be more quickly cut and discharged
than by those hitherto in use.
Hitherto it has been customary to form these cutting screws of the same pitch
from end to end but I find that by varying the pitch in the length of the screw
better results can be obtained. My invention therefore consists essentially in
constructing a double screw divided into a number of cutters varying in pitch at
different points along its length between the receiving end and the delivery end
giving a number of different distinct pitches one of the cutting or shearing screws.
being cut away under the opening of the hopper.
It will be fully described with reference to the accompanying drawings.
Fig. 1. Side elevation showing pitch of one thread of the screw.
Fig. 2. Elevation of opposite side showing pitch of other thread of the screw.
Fig. 3. End elevation showing separate cutter.
I make the screw with preferably two threads A A¹ forming a number of
rotating screw cutters a by which the meat is minced against knives or cutters fixed
radially. The screw may be formed by a number of the cutters a threaded onto
a shaft or by casting the screw threads solid and cutting out the space between the
cutters with a milling tool or otherwise. The latter is the way I prefer to form
the screw cutter.
The thread A of the screw cutter at the receiving end B is formed with a
gradually increasing pitch from a toy with a uniform pitch at the cutting part C
from y to greater than at the receiving end B and with a reduced pitch at the
end D from thus giving a different distinct pitch to different sections of the
thread which go to make up the screw.
The thread A¹ of the screw cutter at the cutting part C from y to z is formed.
with a uniform pitch and the delivery end D from z is formed with a reduced pitch
thus giving two distinct pitches to this thread of the screw.
The screw thread A extends under or below the hopper and the thread A¹ does
not extend below the opening of the hopper to allow for the altered pitch of the
threads, but is cut off or terminates at y.
By this construction of cutting screw I obtain a cutting and propelling power for
raw meat not attainable by any other machine.
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. A cutting screw for mincing machines constructed of a varying pitch at
different parts along the length of the screw threads giving a different distinct
pitch at the different parts substantially as described.

page_text: 2. A cutting screw for mincing machines constructed substantially as described
and shown.
Dated this 16th day of March 1896.
WM. P. THOMPSON & Co.,
6, Bank Street, Manchester, Patent Agents.