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

page_text: Date of Application, 14th Dec., 1889
Complete Specification Left. 6th Sept.. 1890-Accepted. 11th Oct., 1890
PROVISIONAL SPECIFICATION.
Improvements in 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 in breaking and beating engines,
improved means for regulating the action of the rolls both as far as regards the
severity of cut, and the greater or less nearness of the rolls to the fixed cutters, and
it is advantageously applicable to ordinary horizontal rolls, especially in engines of
large size, and also to vertical conical or other rolls used in breaking or beating
engines.
•
In carrying out my invention I apply levers with adjustable counter weights to the
shafts or journals of the rolls, so that the nearness of the cutting edges of each roll
to the fixed cutters and the severity of the contact may depend on the effective or
unbalanced weight of the roll, which weight may be adjusted to suit the materials
under treatment, or the fineness which it is wished the resulting pulp to have. In
combination with the adjustable counterbalancing levers adjustable stops may be
provided as rigid limits defining the minimum and maximum distances of the roll
from the fixed cutters.
Dated this Thirteenth day of December 1889
EDMUND HUNT,
Applicant's Agent.
COMPLETE
SPECIFICATION.
Improvements in 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 in breaking and beating engines,
improved means for regulating the action of the rolls as regards both the severity
of cut and the greater or less nearness of the rolls to the fixed cutters; and it
is advantageously applicable to ordinary horizontal rolls, especially in engines of
large size, and also to vertical conical or other rolls used in breaking or beating
engines.
In carrying out my invention I apply levers with adjustable counter weights to
the shafts or journals of the rolls so that the nearness of the cutting edges of each
roll to the fixed cutters and the severity of the contact may depend on the effective
or unbalanced weight of the roll, which weight may be adjusted to suit the
materials under treatment or the fineness which it is wished the resulting pulp to
have. In combination with the adjustable counterbalancing levers adjustable stops
may be provided as rigid limits defining the minimum and maximum distances of
the roll from the fixed cutters.
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 by way of example two simple and con-
venient modifications of my improvements.

page_text: Figures, 1, and 2, on the accompanying sheet of explanatory drawings are, respec-
tively, a plan and a side elevation of an ordinary horizontal breaking or beating
engine as fitted with one modification of my improvements. Figure, 3, is a
sectional side elevation of the vertical-conoidal breaking or beating engine described
in my Patent Specification No. 9106 of 1888 and as fitted with my present improve-
ments. 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 Figures, 1, and 2, of the drawings the shaft, A, of the
horizontal roll, B, is carried in bearings at the lower ends of two vertical links, C,
placed one on each side of the engine and jointed at the top to a bar, D, extending across
above the engine. This bar, D, is attached to one end of a lever, E, provided with an
adjustable counterweight, F, and centered on a bracket, G, fixed to the central
partition, H, of the engine. By adjusting the counterweight, F, on the lever, E,
the nearness of the cutting edges of the roll, B, to the fixed cutters and the severity
of the contact can be accurately adjusted. Two pins, J, are screwed through
projections, K, on the bracket, G; and by adjusting these pins, J, in relation to the
top of the lever, E. they act as rigid limits defining the range of movement of the
lever and the minimum and maximum distances of the roll, B, from the fixed cutters.
In the modification shown in Figure, 3, a bracket, G, carrying a lever, E, with an
adjustable counterweight, F, is fixed to the bottom of the casing,. L, of the engine
and the lever, E, has connected directly to a bowed part of it a block, M, formed as
the footstep bearing for the bottom end of the shaft, A, of the roll, B. The outer end
of the lever, E, has connected to it the lower end of a rod, N, extending up through
the top of a bracket, P, fixed on the framing, Q, of the engine. The upper end of
this rod, N, is screwed and has on it two screw hand wheels, R, S, one on each side of
the top of the bracket, P, and by adjusting these hand wheels the minimum and
maximum distances of the roll, B, from the fixed cutters are determined.
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 applying levers with
adjustable counterweights to the shafts of the rolls substantially as and for the
purposes hereinbefore described.
Dated this Fifth day of September 1890.
EDMUND HUNT,
Applicant's Agent.