Improvements in Machinery or Apparatus for Foroing or Filling Meat and other Plastic or Yielding Substances into Skins and other Receptacles.
Year: 1894

page_text: Date of Application, 21st Dec., 1894-Accepted, 26th Jan., 1895
UBLE DEIN SIPOTETUATION.
Improvements in Machinery or Apparatus for Foroing or Filling
Meat and other Plastic or Yielding Substances into Skins and
other Receptacles.
I, THOMAS WILLIAMS the younger, of Bay Tree Cottage Church End,
Finchley, in the County of Middlesex, 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 machinery or apparatus for forcing or
filling meat and other plastic or yielding substances into skins and other receptacles
In machinery on apparatus for the purpose above mentioned it is necessary, in
order to secure the best results, that the meat or other substance should be expelled
or delivered from the filling tube or nozzle of the machine both quickly and also in
the form of a practically unbi oken stream. This I effect by means of my invention
as hereinafter described, according to which 1 employ a forcing screw constructed
with a triple thread of quick pitch and ananged to revolve within a casing formed
with internal spal grooves running in the reverse direction to the threads on the
forcing screw, ie, if the spinal grooves in the casing are right handed, the threads
on the forcing screw should be left handed, and vice versa. The open delivery end
of the casing is fitted with a nozzle which torminates in a filling or outlet pipe.
This Dozzle is also provided with internal spiral grooves running in the same
direction as those in the casing, and the front of delivery end of the forcing screw,
which enters the nozzle, is tapered or otherwise shaped so as to fit the interior
thereof. Since the distance between the adjacent threads of my peculiar triple
threaded forcing screw is only one third the distance between the threads of an
ordinary single threaded screw of the same pitch, the effect of the triple thread
18 to prevent the meat or other substance from being carried forwards in too
large lumps, which would be detimental to proper working, and at the same time
to force forward or propel the substance just as quickly as a single threaded screw
of equal pitch would do. Further I find that when a triple threaded screw is used
the meat is not forced back through the hopper, as 18 the case where a single
threaded screw is employed.
In the accompanying drawings in which similar letters refer to corresponding
parts in all the figures
Fig. is a sectional clevation of a machine constructed in accordance with my
invention.
Fig. 2 is an end view of the tuple forcing sciew seen from the fiont, and Fig. 2^
18 an end view of the same seen from the rear.
Fig. 3 18 a detached view of a ulling nozzle slightly different in shape from that
represented in Fig. 1.
A is the casing around the interior of which are formed the spiral grooves a.
is the hopper through which the substances are fed into the machine. c is a comical
nozzle suitably secured to the open delivery end of the casing, as by the screw
ring d, and terminating in the outlet or filling tube e. This nozzle c is constructed
with internal spiral grooves a running in the same direction as the grooves a of the
casing. Bis the peculiar tuple threaded forcing screw the axis C of which revolves
n the bearing D formed on the casing A and may be driven by hand or by power.
are the three threads or spials composing the tuple threaded forcing
crew which run in the reverse direction to the spiral grooves a a' of the casing and
[Price Rd i

page_text: nozzle, said spiral grooves being right handed whilst the threads or spirals of tho
forcing screw B are here represented as left handed, though it is obvious that if
desired this arrangement may be reversed. The front or delivery end of the forcing
screw B 18 tapered so as to fit the interior of the nozzle c. If desired the nozzle c
may be semi-spherical, as shewn in Fig. 3, in lieu of conical, in which case the
delivery end of the forcing screw B would be rounded so as to fit the interior
thereof, in lieu of being tapered as shewn in Fig. 1. Although not shewn in the
drawings, the nozzle represented in Fig. 3 should also be formed with internal
spiral grooves.
In a machine constructed and arranged as above described with spiral grooves in
the casing and nozzle and a triple threaded forcing screw fitting closely both the
casing and nozzle, there will be little or no waste or residuum since practically all
the meat or other substance introduced into the machine will be expelled therefrom
by the rotation of the forcing screw B.
It will be obvious that if desired the filling nozzle may be made integial with
the casing, but I prefer the arrangement of detachable nozzle herein before
described and illustrated in the drawings.
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. In machinery or apparatus for the purpose set forth, the use in combination
with a casing formed with internal spiral grooves, of a tiple threaded forcing screw
constructed to fit the interior thereof, the threads of the said forcing screw running
in the reverse direction to the said internal spiral grooves, substantially as described
and illustrated.
2. In machinery or apparatus for the purpose set forth, the use in combination
with a casing and a filling nozzle each formed with internal spiral grooves, of a
triple threaded forcing screw constructed to fit the interior of both the casing and
the nozzle, the threads of the said forcing screw running in the reverse direction to
the said internal spiral grooves substantially as described and illustrated.
Dated this 21st day of December A.D. 1894.
E P. ALEXANDER & SON,
Chartered Patent Agents,
19, Southampton Buildings, Chancery Lane, Loudon, W.C., Agents.