An Improved Appliance or Machine for Use in Sifting Potter's "Slip."
Year: 1893

page_text: Date of Application, 30th Dec., 1893-Accepted, 7th Apr., 1894
COMPLETE SPECIFICATION.
An Improved Appliance or Machine for Use in Sifting
Potter's "Slip."
I, JAMES PLANT, Stoke Pottery Stoke-on-Trent, Staffs, Earthenware Manu-
facturer, 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:-
This my invention has reference to an improved appliance or machine for use in
sifting potter's slip, and the object of my said invention is to construct efficient
apparatus or appliances for that purpose.
In carrying my said invention into practice I construct a framework of suitable
size, chiefly of wood, to the inside surface of each side rail of which framing
I attach by screws, bolts and nuts or other suitable means a metallic rail or bar of
suitable size and cross-section, which rails are for the purpose of directing or
guiding the travel of the box in which the several sieves are contained or fitted.
In order that my said invention may be more readily understood and explained
in detail I have hereunto annexed two sheets of drawings on which letters of
reference are marked on corresponding parts on all the figures alike.
DESCRIPTION OF DRAWINGS?
Figure 1 is a side elevation of an apparatus or appliance made according to my
invention for use in sifting or screening "slip."
Figure 2 is an end elevation of Figure 1 looking in the direction indicated by
the arrow.
Figures 3 and 4 are enlarged end and side elevations respectively of the metallic
grooved wheels or rollers shewn at Figure 1 attached at or near to each corner of
the sifting box, for guiding or directing the reciprocating travel of such box.
Figure 5 is au enlarged transverse section of each of the side rails of the framing
of such improved sifters.
In these figures a is the wood framing of my improved "slip" sifters, to the
corner posts of which I have shewn attached wooden brackets for supporting
wooden conducting troughs, the wooden case in which are fitted removable
wooden inclined frames e covered with metallic or other gauze is caused to travel
backwards and forwards between the corner posts a³, a by means of reciprocating
motion imparted to the said wooden case d by a metallic rod or shaft secured to
the sides of the said cased by metallic collars f2, a crank or other suitable device
or devices being connected to the inner end of the shaft, which shaft ƒ having
reciprocating motion imparted thereto by any suitable motive power will cause such
sieve container to travel backwards and forwards on side rails at of the
framing a.
It will be understood on reference to the drawings, that "slip" is placed in or
conveyed to a wooden trough g suspended or supported above the said cased by
any suitable means, from whence it Hows through an aperture or apertures in the
bottom of such trough on to the top inclined sieve or lawn, the "slip" that
percolates or flows through such top sieve falling on to the sieve next below, the
coarse "slip" is caused by the reciprocating motion to flow down the inclined sides
of the top sieve and fall into the troughs at each side of the framing, and is
conducted into suitable receptacles for further treatment, the fine "slip" that
percolates or flows through the lowest of the series of sieves e falling into a wooden
hopper or trough from whence it is conducted by a trough i to other receptacles

page_text: for further treatment, the "slip" which is too coarse to penetrate the sieves, flows
down the inclined top surface of such sieves into the side troughs c, the metallic
shaft being supported at each end of the framing a by suitable metallic
bearings f³.
I would have it understood that the sides of the gauze covered inclined frames e
fit into grooves or recesses formed in the sides of the wooden case d as shewn on
the drawings, such frames sloping from the middle or highest part of their length
to their outer ends, so that a portion of the coarse "slip" flows down each inclined
portion of such sieves into the troughs e on each side of the framing a; but if such
sieves are constructed with a single incline or slope from one side of such sieves to
the other side, one trough c only would be used at one side of such framing a. The
wheels or rollers and metallic rails 3 may be dispensed with if desired.
Having now particularly described and ascertained the nature of my said
invention and in what manner the same is to be performed I declare that what
I claim is;
;-
1. An appliance or apparatus of any suitable size for use in sifting potter's
"slip" constructed chiefly of or from wood, consisting of a framing supporting
a wooden case or box in which are fitted two or more removable wood frames
having inclined top surfaces covered with metallic or other suitable gauze,
reciprocating motion being imparted to such sieve box by means of a suitable
metallic shaft secured to the sides of such box by metallic collars, the shaft being
supported by suitable metallic bearings fixed to the framing of the appliance,
a metallic wheel or roller being fitted or fixed at or near to each corner of the
sieve box and caused to rotate or travel on a metallic rail or bar attached to the
inner side of each side rail of the framing, suitable troughs being fitted at the sides
and beneath the framing of such appliances for conducting away the screened and
coarse "slip," as herein substantially described set forth and fully illustrated on
the drawings hereunto annexed.
2. An apparatus or appliance of any suitable size for use in sifting potter's
"slip" constructed chiefly of or from wood, consisting of a framing supporting a
wooden case or box in which are fitted two or more removable wood franies having
inclined top surfaces covered with metallic or other suitable gauze, reciprocating
motion being imparted to such sieve box by means of a suitable metallic shaft
secured to the sides of such box by metallic collars or other suitable means, the
said shaft being supported by metallic bearings fixed to the framing of the
appliance, suitable troughs being fitted or fixed at the sides and beneath the framing
of the appliance for conducting away the screened and coarse
manner as herein substantially described and set forth.
Dated this 30th day of December 1893
"
slip," in the
JOHN NEWTON,
Longport, Staffs, Agent for Applicant.