Year: 1895

page_text: Date of Application, 17th May, 1895-Accepted, 22nd June, 1895
We, JOSEPH ALLEN BAKER, WILLIAM KING BAKER, and GEORGE SAMUEL
BAKER, all of 58 City Road, in the City of London, Engineers, 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:
Our invention relates to machines for treating plastic material, and more
particularly to means for preventing the adhesion of dough or the like to the walls
of the delivery spouts, mouthpieces, or other channels of dough-moulding and shaping
machines; in these machines we have found such adhesion to be injurious inasmuch
as it results in the formation of irregularities in the issuing dough sheet by tearing
or marking it. Our invention is applicable with advantage to such a machine as is
described in prior Letters Patent No. 16345 dated 16th February 1893, and we
will describe it with reference to that machine, premising however that our
invention is not limited to this particular application.
In the accompanying drawings
Figure 1 is a vertical section of the delivery end of the aforesaid machine, the
section being taken in a plane parallel to the direction of issue of the dough, and
Figure 2 is a front view of the parts shown in Figure 1.
A are casings within which work, side by side, a series of parallel com-
pression screws or worms B, only one of which is seen in the drawings. C is a
bar in which is a compression chamber C', opposite the ends of the worms and
tapered as shown. The arrow indicates the direction of travel of the dough.
Two bars D are bolted to the bar C by bolts E passed through slots in the
bars D so as to allow the width of the opening between the two bars to be
varied as desired, and between each bar D and the bar C one edge of a strip F
of indiarubber or flexible material, which will alternately stretch or yield and
recover itself, as the material passes over it, is gripped as shown so that the strip
lies upon the surface of the spout or channel left between the bars D and, whilst
retained in the desired position is free except as to the portion gripped, to slide
on that surface when extended or expanded under the dragging action of the
issuing dough; this arrangement, it is found, prevents tearing of the dough, and
allows the same to issue uniformly.
We are aware that hard rubber, incapable of stretching in the manner above
indicated, has been used as a fixed lining to such a spout or channel, and consequently
has been found to be unsatisfactory, but as an alternative to the strip of soft and
flexible material herein before referred to we may if desired use a fixed lining of
soft rubber or the like, capable of yielding and recovering itself like the flexible
and elastic material aforesaid.
Having now particularly described and ascertained the nature of the said inven-
tion and in what manner the same is to be performed, we declare that what we
claim is ;-
1. Lining the spout or delivery orifice of a kneading and sheeting or moulding
machine with a material capable of alternately stretching or yielding and recovering
itself as the dough or the like passes over it for the purpose of facilitating the

page_text: 2. In a machine for treating plastic material the combination and arrangement
of parts substantially as herein before described and illustrated in the accompanying
drawings.
Deted this 17th
190
BOULT & WADE,
Agents for the Applicants.