Improvements in Apparatus Especially suitable for Forcing Plastic Materials through Dies.
Year: 1888

page_text: Date of Application, 18th Sept., 1889
Complete Specification Left, 17th June, 1889-Accepted, 20th July, 1389
PROVISIONAL SPECIFICATION.
Improvements in Apparatus Especially suitable for Forcing Plastic
Materials through Dies.
I, WILLOUGHBY STATHAM SMITH the Younger of 18 Wharf Road, City Road,
in the County of Middlesex, Telegraphic Engineer, do hereby declare the nature
of this invention to be as follows:-
The apparatus consists of a cylindrical wedge shaped casing containing two discs
(or one or both of them might be a ring) whose planes are inclined to each other.
The outer plane surfaces of the discs are in contact with the inner surfaces of the
plane ends of the casing. The middle part of the inner face of each disc is plane
and the space between the discs is here occupied by a cylindrical wedge fixed to
the casing with which it is co-axial and whose two plane surfaces are in contact
with those of the discs. The part of the surface of each disc where it projects
beyond the central cylindrical wedge is occupied by a ring of teeth, the two rings
gearing with each other at one point. One of the discs is driven in any convenient
manner.
Inlet and outlet openings for the material are provided in the casing. The outlet is
near to the point where the discs gear together whilst the inlet is remote from it-
between them a partition connecting the cylindrical wedge to the casing and
touching the ends. of the teeth of both discs.
The action of the apparatus is as follows:-the discs are driven by turning the axis
of one of them and material is introduced into the casing by feeding rolls or otherwise
which material enters the teeth of the discs and is thereby carried past the partition
but cannot be brought back again as it is driven out from between the teeth at the
point where they gear together. As the discs continue to revolve the space beyond
the partition becomes filled with the material which is forcibly expelled through the
outlet into the usual shaped dies for moulding to required sizes and shapes.
Dated thin 10th La Lambo 1000
COMPLETE SPECIFICATION.
Improvements in Apparatus Especially suitable for Forcing Plastio
Materials through Dies,
I, WILLOUGHBY STATHAM SMITH the Younger of 18 Wharf Road, City Road,
in the County of Middlesex, Telegraphic 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 :-
The apparatus consists of a cylindrical wedge shaped casing containing two discs
(or one or both of them might be a ring) whose planes are inclined to each other.
The outer plane surfaces of the discs are in contact with the inner surfaces of the
plane ends of the casing. The middle part of the inner face of each disc is plane and
the space between the disc is here occupied by a cylindrical wedge fixed to the casing
with which it is co-axial and whose two plane surfaces are in contact with those of the
discs. The part of the surface of each disc where it projects beyond the central
cylindrical wedge is occupied by a ring of teeth, the two rings gearing with each other
at one point. One of the discs is driven in any convenient manner.
Inlet and outlet openings for the material are provided in the casing. The outlet is
near to the point where the discs gear together whilst the inlet is remote from it—
between them is a partition connecting the cylindrical wedge to the casing and
touching the ends of the teeth of both discs.

page_text: oro apparatus is as follows:-the discs are driven by turning the axis
of one of them and material is introduced into the casing by feeding rolls or
otherwise which material enters the teeth of the discs and is thereby carried past the
partition but cannot be brought back again as it is driven out from between the
teeth at the point where they gear together. As the discs continue to revolve
the space beyond the partition becomes filled with the material which is forcibly.
expelled through the outlet into the usual shaped dies for moulding to required sizes
and shapes.
In order that my said invention may be more fully understood and readily carried
into effect I will proceed to describe the drawings, hereunto annexed.
DESCRIPTION OF THE DRAWINGS.
Figure 1 is a section in a plane passing through the axes of the discs.
'Figure 2 is a section on the line X, X, (Figure 1).
A is the casing containing the discs B and ring C whose planes are inclined to
each other, the disc B being driven by means of the axis B¹ and the ring C.
working upon a cylindrical projection A¹ of the casing. D is the cylindrical
wedge which occupies the middle part of the casing, its plane surfaces resting
against the untoothed portion of the disc B and ring C. It is supported upon the
cylindrical projection A' of the casing and is secured by bolts E. F is the inlet
passage and H the outlet passage. J is a partition connecting the wedge D to
the casing A and touching the teeth of the disc and ring.
Having now particularly described and ascertained the nature of my said inven-
tion and in what manner the same is to be performed, I declare that what I
claim is :-
.
The combination of the casing A, discs or rings B and C whose planes are
inclined towards each other and which are provided with teeth gearing together
at one point the cylindrical wedge D between the discs or rings, the inlet and
outlet passages F and H and the partition J between them.
Dated this 13th day of June 1889.
WILLOUGHBY S. SMITH.