Improvements in or connected with Breaking and Beating Engines used in Making Paper Pulp.
Year: 1889

page_text: Date of Application, 16th Sept., 1889
Complete Specification Left, 12th June, 1890-Accepted, 12th July, 1890
PROVISIONAL SPECIFICATION.
Improvements in or connected with Breaking and Beating Engines
used in Making Paper Pulp.
I, JAMES HUNTER ANNANDALE, of Polton Paper Works, Polton, in the County of
Mid Lothian, North Britain, Paper Maker, do hereby declare the nature of this
Invention to be as follows, that is to say :--
My said Invention has for its object to provide improved means for satisfactorily
and conveniently controlling and regulating the action of breaking and beating engines
used in making paper pulp. I prefer to employ breaking and beating engines of the
kind described in my Patent Specification No. 9106 of 1888; but my present Inven-
tion is also applicable to any other kinds of breaking and beating engines in which
the operating roll is or can be made to operate in a casing which is entirely closed
excepting the inlet and discharge openings.
In carrying out my Invention I cause the half stuff or pulp to be discharged from
the engine against a head or back pressure by extending a discharge pipe from the
outlet up some feet higher than the machine, the half stuff or pulp being delivered
from the top of such pipe. I make the effective height of the discharge pipe variable
and adjustable so that the best effect can be conveniently secured with various con-
ditions as regards the materials operated on, and the rates of feed and of the roll. The
effective height of the discharge pipe may be made variable and adjustable in various
ways.
In one convenient arrangement the pipe is made telescopic with an upper part which
is movable by screwing or rack-and-pinion mechanism, the upper part being made to
fit with sufficient tightness in or upon the lower part.
Dated this Fourteenth day of September 1889
EDMUND HUNT,
Applicant's Agent.
COMPLETE SPECIFICATION.
Improvements in or connected with Breaking and Beating Engines
used in Making Paper Pulp.
I, JAMES HUNTER ANNANDALE, of Polton Paper Works, Polton, in the County of
Mid Lothian, North Britain, Paper Maker, 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, that is to
say:
My said Invention has for its object to provide improved means for satisfactorily
and conveniently controlling and regulating the action of breaking and beating engines
used in making paper pulp. I prefer to employ breaking and beating engines of the
kind described in my Patent Specification No. 9106 of 1888; but my present Inven-
tion is also applicable to any other kinds of breaking and beating engines in which
the operating roll is or can be made to operate in a casing which is entirely closed
excepting the inlet and discharge openings.
In carrying out my Invention I cause the half stuff or pulp to be discharged from
the engine against a head or back pressure by extending a discharge pipe from the
outlet up some feet higher than the machine, the half stuff or pulp being delivered
from the top of such pipe. I make the effective height of the discharge pipe variable
and adjustable so that the best effect can be conveniently secured with various con-
ditions as regards the materials operated on, and the rates of feed and of the roll. The
effective height of the discharge pipe may be made variable and adjustable in various
ways.

page_text: And in order that my said Invention and the manner of performing the same may
be properly understood I hereunto append a sheet of explanatory drawings to be
hereinafter referred to and showing sectional side elevations of three simple and con-
venient arrangements of my improved apparatus. In these drawings the same
reference letters are used to mark the same or like parts wherever they are
repeated.
In the modification shown in figure, 1, the casing of the breaking or beating
engine, S, is fitted with a discharge pipe, A, extending up from the outlet. A movable
upper pipe, B, is fitted telescopically within the discharge pipe, A, passing through a
stuffing box, C, at the upper end of the discharge pipe, A; and it is bent over and has
its outer end entered into the upper end of a fixed pipe, D, leading to other apparatus
(not shown) in which the half stuff or pulp is further treated. An air hole is formed
in a projection, E, on the pipe, B, to prevent siphonal action; and a bridge, F, extends
between the two arms of the pipe, B. The head of a screw spindle, G, is fitted loosely
in the bridge, F, and the screw spindle works through tapped holes in two
brackets, H, I, formed on the discharge pipe, A. The screw spindle, G, having fixed
on it a small handwheel, J, by turning which the upper pipe, B, may be raised or
lowered and thus vary or adjust the effective height of the discharge pipe, A, and the
head or back pressure against which the half stuff or pulp is discharged.
In the modification shown in figure, 2, the upper pipe, B, is formed with a rack, K,
on part of its outer surface which rack gears with a pinion, L, carried on the upper
end of a bracket, M, extending up from the top of the casing of the machine this
bracket, M, being formed with an arm, N, for guiding the outer arm of the upper
pipe, B. The end of the pinion spindle is squared to receive a key for turning it by
in order to raise or lower the upper pipe, B.
In the modification shown in figure, 3, the pipe, B, is connected to the discharge
pipe, A, by flexible tubing, P, of rubber or other suitable material. The screw
spindle, G, is fitted loosely in brackets, Q, R, fixed to the top of the casing of the
machine, one, R, of the brackets also guiding the pipe, B.
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:
-:
In breaking and beating engines used in making paper pulp making the effective
height of the discharge pipe adjustable substantially as and for the purposes herein-
before described.
Dated this Eleventh day of June 1890.
EDMUND HUNT,
Applicant's Agent.