Year: 1898

page_text: I, WILLIAM BENSON, of Regent Street, Leeds, in the County of York, Felt Paper
Manufacturer, do hereby declare the nature of this invention to be as follows:-
This invention relates to improvements in beating engines employed in the
manufacture of paper for reducing the rags, cardboard, and paper to the required
pulp.
Hitherto it has been customary in beating engines or machines employed for
this purpose to form the plates thereof with chisel shaped edges; and owing to
the edges, when so formed, quickly wearing away, the plates required to be removed
from the machine for sharpening purposes.
The removal of these knives not only entailed great expense, but also necessi-
tated the machine remaining idle until the plates could be replaced.
Now the object of this invention is to overcome these defects by constructing a
plate with edges that will not require to be removed for sharpening purposes, at
the same time to ensure the pulp being more quickly passed to the grinding or
reducing action of the plates, and consequently more thoroughly reduced to the
constituency required.
According to this invention instead of making the edges of the steel or other
metal beater plates straight and ground like a chisel I make the edge of each plate
either corrugated, wavy, or indented, that is say like a series of the letter V joined
together at their upper ends. The said corrugations, waves, or indentations are
arranged transversely to the length of the plates and may extend only a portion
of the distance across the plate. The upper edges of the plate are ground or
arranged say at or about a right angle to its sides. Plates constructed as herein
described are fixed at intervals in the periphery of the rotating cylinder or drum
of the engine or machine, as well as in or on an adjustable carrier at or near the
incline at the bottom of the tank or receptacle, in which the cylinder or drum
rotates. The plates which are used at the bottom of the tanks are preferably made
corrugated, wavy, or indented on both edges with say a central longitudinal band
or strip of plain material between them, so that they may be easily reversed as
one side becomes worn away. Any desired number of these plates say for example
fourteen or fifteen (more or less) may be mounted in the carrier which is capable
of adjustment towards the periphery of the rotating cylinder or drum. The plates
fixed in the periphery of the drum are preferably only corrugated on one edge
and are so arranged that as the cylinder or drum rotates their edges will form
cutting surfaces against the edges of the plates mounted in the adjustable carrier.
Other parts of the engine or machine as well as the means for actuating the
rotating parts may be of the usual and ordinary construction.
1
1. of W 1900

page_text: Fig. 3 a plan looking at the top.
Fig. an enlarged plan of a beater plate constructed according to this invention.
Fig. 5 a plan showing the arrangement of beater plates at the bottom of the
machine.
Fig. 6 an elevation of a bottom beater plate.
Like parts in all the views are marked with similar letters of reference.
A is the framework of the machine arranged to form a tank or receptacle with
circular ends for the reception of the material to be operated upon. Bis a central,
or nearly so, division plate around which the material operated upon is caused to
circulate to and from the drum. Between the central division plate B and one
of the sides of the tank A is arranged, at one end thereof an incline C leading
upon a rotating cylinder or drum mounted in pedestals E fixed
to levers F jointed at f to the framework, and connected at their
opposite ends f¹ to the adjusting screws G passing through bosses
onl the framework A. The adjusting screws G are armed with nuts H
provided with handles h by which the levers F are raised and lowered.
A carrier I is provided below the cylinder or drum D for the reception of the
stationary plates to be hereafter described. A rotary motion is imparted to the
cylinder or drum from any suitable source of power through pulley J mounted
on the same shaft K as the said cylinder or drum.
".
All the above described parts are of the usual and well known construction for
this class of machine.
Instead of making the edges of the steel or other metal beater plates L straight
and ground like a chisel I make the edge of each plate either corrugated, wavy
or indented, as shown at Fig. 4, that is say like a series of the letter V joined
together at their upper ends. The said corrugations, waves, or indentations are
arranged transversely to the length of the plates and may extend only a portion

page_text: of the distance across the depth of the plate but are made to extend its whole
length. The upper edges of the plate are ground or arranged say at or about a
right angle to its sides. Plates constructed as herein described are fixed at intervals
in the periphery of the rotating cylinder or drum D of the engine or machine.
Plates constructed as described are also fixed in or on an adjustable carrier I at
or near the incline C at the bottom of the tank or receptacle A in which the
cylinder or drum rotates. The plates M which are mounted in the carrier I and
used at the bottom of the tank A are preferably made corrugated, wavy or indented
on both edges with say a central longitudinal band or strip m as shown at Fig. 6
of plain material between the corrugations or the like so that the plates may be
easily reversed as one side becomes worn away. Any desired number of these
plates M say for example fourteen or fifteen (more or less) may be fixed together
between the plates I with or without a vertical packing M2, of wood between
them by bolts m¹ and mounted in the carrier I which is capable of adjustment
towards the periphery of the rotating cylinder or drum D by set screws or other
equivalent means. The plates L are fixed by wedges N in the periphery of the
drum and they are preferably only corrugated on one edge the remainder of
the depth of the plate in this case being plain and they are so arranged that as
the cylinder or drum D rotates their edges will form cutting surfaces against the
edges of the plates mounted in the adjustable carrier I and the material is by the
rotation of the drum D kept constantly in circulation to and from the drum D,
the circular ends of the tank facilitating this circulation.
Other parts of the engine or machine as well as the means for actuating the
rotating parts may be of the usual and ordinary construction.
Having now particularly described and ascertained the nature of my said in-
vention and in what manner the same is to be performed, I declare that what I
claim is:
1. In a beating engine for paper making beater plates employed for reducing
purposes provided with a series of corrugations, or wavy or other indentions
arranged tranversely to the length of the plate on one or both of the longitudinal
edges thereof, and to extend wholly or partially across the depth of the same, with
or without a central portion of plain material, substantially as herein described; and
illustrated.
2. In a beating engine for paper making the beater plates constructed as herein
described and mounted in the rotating drum or cylinder of the machine and in an
adjustable carrier below the periphery of the said cylinder or drum, all arranged
and combined substantially as herein described and illustrated and for the pur-
poses set forth.
1000