Improvements in Machines for Cutting Plastic Substances.
Year: 1885

page_text: Improvements in Machines for Cutting Plastic Substances.
I JOHN GULICK BAKER of 1922 North Seventh Street in the City of Phil-
adelphia State of Pennsylvania United States of America Machinist 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:-
My Invention consists of certain improvements in the construction of the
machine for cutting up plastic or yielding substances described in the Specification
of Letters Patent No 510 dated January 30th 1883.
I will describe my present invention with reference to the accompanying
drawings whereof Figure 1 is a vertical section of a cutting machine embodying
my present improvements and Figure 2 is a perspective view of several of
the parts.
E is the outer shell or casing of the machine corrugated longitudinally as
described in the said Specification of the former Patent and provided with the
usual hopper K. The inner end of the casing is secured to and closed by a plate m
which by preference forms part of the stand Y.to support the entire machine.
This stand is shewn as constructed for being clamped or otherwise secured to a
table for the machine illustrated is designed to mince or cut up meat and is
intended for family or store keepers use. The outer end of the casing E is closed
by a perforated plate A which is adapted to a seat in the end of the casing and is
held in place by a screw ring B the perforated plate being prevented from turning
by a pin i on the casing adapted to a recess ; in the perforated plate.
The retaining ring B is provided with recesses and projections to facilitate the
screwing and unscrewing of the ring.
The forcing or feed screw W which is adapted to the interior of the casing E has
at its inner end a journal n adapted to a bearing in the plate m and is provided. at
its outer end with the usual handle F. The shouldered end of the screw W
adjacent to the journal n is provided with an annular recess for the reception of
antifriction bearing metal n¹.
To a square or many sided projection p at the opposite end of the feed screw is
adapted the knife D which I have shewn in the present instance as provided with
four blades.

page_text: In constructing my previous machines in the larger sizes I have found that
owing to the varying sidé pressure of the material on the feed screw the latter will
in time cut or wear away the interior of the casing E so that the outer end of the
screw and the knife will when the handle is turned describe a planetary motion
and consequently it becomes difficult if not impossible to keep the cutting edges of
the knife up against the perforated plate A.
To overcome this difficulty I form on the outer end of the feed screw Wa
journal d and in the plate A a bearing x for this journal d. The bearing may be
formed in one piece with the plate A or may be a separate piece as illustrated in
the drawing secured to the plate in any convenient manner.
I make the bearing in the form of a projection for the twofold reason that a
longer bearing is thus provided and at the same time a handle is afforded for the
manipulation and removal of the plate when desired.
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
The combination of the casing and the feed screw having a knife and carrying at
its outer end a journal with a perforated end plate having a bearing for the said
journal substantially as hereinbefore described.
Dated this 28th day of December 1885.
J. HENRY JOHNSON,
47, Lincoln's Inn Fields, London,
Agent for the said John Gulick Baker.