Improvements in Apparatus for Straining Paper Pulp and the like.
Year: 1888

page_text: Date of Application, 30th Aug., 1888
Complete Specification Left, 30th May, 1889-Accepted, 6th July, 1889
PROVISIONAL SPECIFICATION.
Improvements in Apparatus for Straining Paper Pulp and
the like.
I WILLIAM HALL of 88 Preston Terrace Redearth Road Darwen in the County
of Lancaster, Engineer, do hereby declare the nature of this invention to be as
follows:-
My Invention relates to the construction of apparatus for straining paper or like
pulp or matter and is of the flat variety.
I use a pair of boxes or trays of wood or other suitable material, one of these
working inside the other, the moveable box having metallic straining plates carried
therein.
The fixed box is bolted to a suitable framing and the moveable box rests against
rods connected by links and which rods are normally depressed by springs or weights
causing the moveable box carrying the straining plates and on which plates the pulp
to be strained rests, to approach the bottom of the fixed box.
To provide means for raising and lowering the moveable box I arrange a rock
shaft carrying a cam or cams bearing against the links connecting the rods whereon
the moveable box rests, this shaft is driven by crank and fly wheel or otherwise so
that the moveable box is alternately raised and lowered, so straining the pulp.
An orifice or a pump may be employed to carry off the liquid from the fixed box
and in case a pump be used the rock shaft might operate the same each stroke.
Dated this 30th day of A must 1888
POPPLEWELL, COLTON & Co.,
17 & 18, Southampton Buildings, London, W.C., Agents for the Applicant.
COMPLETE SPECIFICATION.
Improvements in Apparatus for Straining Paper Pulp and
the like.
I WILLIAM HALL of 88 Preston Terrace Redearth Road Darwen in the County
of Lancaster 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 :—
My invention relates to the construction of apparatus for straining paper or like
pulp or matter and is of the flat variety and in carrying it into effect I use a pair of
boxes or trays of wood or other suitable material one of these working inside the
other the moveable and upper box having metallic straining plates carried therein.
Referring to the accompanying sheet of drawings and to the figures and letters of
reference marked thereon.
Figure 1 is a side elevation and part section of my straining apparatus.
Figure 2 is a plan of the same.
Figure 3 is an end elevation thereof and the method of raising the moveable box
shewn on the drawing is that in which the springs F are used to raise the upper or
moveable box which is depressed by the action of the rocking shaft and the cams
attached thereto.
The fixed box A is bolted or otherwise fixed to a suitable framing such as B and
the moveable box C rests against and is attached to rods D connected by links E and
which links are normally raised or upheld by springs F which are firmly secured
thereto.

page_text: I provide a rocking shaft G carrying cams H bearing against the links E connecting
the rods D. The action of the rocking shaft and cams causes the moveable box
containing straining plates I to descend during such action it being then raised by
means of the springs before mentioned an alternate and continuous raising and
depressing of the moveable box C is thus ensured.
The rock shaft is driven by a crank shaft J and flywheel K fast and loose pulley L L
being provided when necessary thus a number of these strainers may be arranged in
series driven from the same shafting.
An orifice may be made in lower box and suitable attachments provided to ensure
the escape of liquid therefrom, or a pump may be used for this purpose and could be
operated from either the rocking or main shaft.
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
First-In apparatus for straining paper pulp and the like the use of a moveable
strainer box working within an outer and fixed box and being alternately raised and
lowered therein as and for the purpose set forth.
Second-The means and apparatus for straining pulp and the like substantially as
described herein and illustrated by the accompanying drawings.
Dated this 30th day of Mar 1889
POPPLEWELL, COLTON & Co.,
17 & 18, Southampton Buildings, London, W.C., Agents for the Applicant.