Improvements in and applicable to Filter-press Cloths, chiefly intended for use in Filtering "Slip" for making Potter's Clay.
Year: 1892

page_text: Date of Application, 31st Mar., 1892
Complete Specification Left, 30th July, 1892-Accepted, 17th Sept., 1892
PROVISIONAL SPECIFICATION.
Improvements in and applicable to Filter-press Cloths, chiefly
intended for use in Filtering "Slip" for making Potter's Clay.
WILLIAM THOMAS LUCAS, 31A Market Place, Burslem, Staffs., Filter-press
Cloth Manufacturer, do hereby declare the nature of this invention to be as
follows:-
This my invention has reference to improvements in and applicable to filter-
press cloths intended for use in making potter's clay from what is known as
slip," and the object of my said invention is to make such cloths, so that they
shall be more durable and efficient than the filter-press cloths ordinarily used.
66
To carry my said invention into practice I make such filter-press cloths of any
suitable shape and size of one piece of piece, preferably of specially made yarn
three-fold weft and three-fold warp cotton, which has been especially woven for
filtering "slip," about mid-way of the length and width of the sheet or piece of
material I form a hole or aperture of any suitable shape and size, through which
bole a slip-tap nozzle can be placed, the peripheries of such holes or apertures I
bind or stitch round in the usual manner to prevent fraying and tearing of the
material of which the sheet is made, I then place a suitably shaped metallic ring
or collar on one side of the sheet, so that the lower part of the collar can be passed
through the hole or aperture, on the other side of the sheet I also place a metallic
ring or collar so that its lower part fits into the hole of the first named ring, I
then clench or fasten the two metallic collars or rings together by any suitable
means, so that the hole or apertures formed through cloths for receiving the nozzle
of a slip-tap will be considerably strengthened.
In order to give additional strength to the part or parts of such filter press
cloths where the nozzle of a slip tap is passed through them, I first stitch or
otherwise attach a patch or piece of cotton cloth or other suitable material of any
convenient shape and size to the main filter-press cloth or sheet, and afterwards
form a hole or aperture through the main piece or sheet and the patch or piece
attached thereto, and bind or stitch the periphery or peripheries of the hole or
apertures in the usual manner, I then place one metallic ring or collar on one side
of the sheet with its lower part in the hole, and a metallic ring or collar on the
piece of material forming the patch so that its lower part will fit into the part of
the collar in the hole, and by any suitable means clench or fasten the two metallic
rings together as herein before stated.
It will be easily understood that potter's filter-press cloths as ordinarily used are
made with two or more pieces of cloth or other material stitched together, and that
when such stitches are burst or broken the liquid clay or "slip
can escape from
the folded cloth or cloths, and the stitches on the peripheries of the slip-tap holes
when worn or broken permit the cloth or cloths to be frayed and easily torn.
Dated this 30th day of March 1892.

page_text: COMPLETE SPECIFICATION.
Improvements in and applicable to Filter-press Cloths, chiefly
intended for use in Filtering "Slip" for Making Potter's Clay.
WILLIAM THOMAS LUCAS, 31 Market Place, Burslem, Staffordshire, Filter-
press Cloth Manufacturer, 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 has reference to improvements in, and which are applicable to.
filter-press cloths intended for use in making potter's clay from what is known as
slip, and the object of my said invention is to make such cloths more. durable and
efficient than the filter press cloths ordinarily used.
In carrying my said invention into practice I make filter-cloths of any suitable
shape and size of one main sheet or piece of material, preferably three fold weft
and three fold warp cotton which has been specially woven for filtering "slip."
About mid-way of the length and width of such sheet or piece of material I form
a hole or aperture of any suitable shape and size, through which hole a slip tap
nozzle can be placed, the periphery of such hole I bind or stitch round in the
usual manner to prevent fraying and tearing of the material of which the sheet is
made, then place a suitably shaped metallic ring or collar on one side of the
sheet, so that the neck of the collar can be passed through the hole or aperture
formed through the sheet, on the opposite side or face of the sheet I also place a
suitably shaped metallic ring or collar, so that the said collar fits around the neck
of the first named metallic ring, I then clench or fasten the two metallic collars or
rings together by a drift, tapering bolt or other suitable means, so that the neck of
one ring is forced tightly against the internal periphery of the other ring (as
shewn in sectional elevation at Figure 8 of the drawings) to prevent such collar
and ring becoming detached one from the other.
It will be easily understood that potter's filter-press cloths as ordinarily used
are made with two or more pieces of material stitched together, and when such
stitches are burst or broken the liquid clay or
< slip can escape from the cloth
or cloths when in use, and the stitches on the peripheries of the slip-tap holes
when worn or broken permit the said cloth or cloths to fray and tear.
In order that my said invention may be readily understood and explained in
detail I have hereunto annexed a sheet of drawings on which letters of reference
are marked on corresponding parts on all the figures alike.
DESCRIPTION OF DRAWINGS.
Figure 1 is a plan view of a filter-press cloth made according to my invention.
Figure 2 is an edge elevation of one of the parts of the metal nozzle-hole
collars, such as are used with ordinarily made filter-press cloths.
Figure 3 is an elevation partly in section of the other part of one of the
metal nozzle-hole collars, such as ure used with ordinarily made filter-press cloths.
Figure 4 is a plan view of Figure 3.
Figure 5 is an elevation partly in section of one part or the collar ring of
one of the nozzle-hole collars used in connection with my improved make of filter-
press cloths.
Figure 6 is an elevation partly in section of the other part of one of the
improved metal nozzle hole collars used in connection with my improved make of
filter-press cloths.
Figure 7 is a plan view of Figure 6,

page_text: Figure 8 is an enlarged sectional elevation taken through the line A-B of
Figure 7.
Figures 2, 3, 4, 5, 6 and 7 being drawn about their full size.
In these figures a represents the main part of an improved filter-press cloth,
to which I have shewn attached by stitches the patch or piece of cotton cloth c
according to my improved construction, and the metallic collar or ring g.
Figures 2 and 3 illustrate the two parts d and e of a metal nozzle-hole collar,
such as are used with ordinarily made filter-press cloths.
At Figures 5, 6, 7 and 8, f represents one part, and the other part of my
improved metal nozzle-hole collar, h represents the stitched periphery or edge of
nozzle-hole of my improved filter-press cloths, and i is a portion of the filter-press
cloth a and patch b.
In order to give additional strength to such filter press cloths at the part or
place where the nozzle-holes or apertures are formed, I stitch or otherwise attach a
patch or piece of cotton-cloth c or other suitable material of any convenient shape
and size to one side or surface of the main filter-press cloth or sheet a, and form a
hole or aperture through the main sheet and the patch attached thereto, I then
bind or stitch the periphery or peripheries of the hole in the usual manner, after
which I place a suitably shaped metallic collar or ring on one side of the sheet, so
that the neck g of the ring passes through the hole in the cloth and patch, I then
place a collar or ring fof brass or other material incapable of oxidising, on the
piece of material forming the patch, which patch is sewn to one side of the main
sheet a so that the hole of the said ring will fit slackly around the neck o' of the
metallic collar 9, I then by any suitable means clench or bend the top part of
the neck g of the collar 9 outwardly against the periphery of the hole f" of the
metallic ring to prevent such ring and collar g becoming detached one from the
other.
Having now particularly described and ascertained the nature of my said inven-
tion and in what manner the same is to be performed 1 declare that what I
claim is ;-
1st. The manufacture of filter-press cloths of or from one main piece or sheet of
yarn, three fold weft and three fold warp cotton which has been specially woven
for filtering "slip," forming a hole or aperture by any suitable means and of any
suitable shape and size through the said main sheet about mid-way of the length
and width of such sheet, binding or stitching the periphery of such, hole,
strengthening the periphery of such hole by means of the improved metallic
collar and ring f, the neck g' of which metallic collar is first inserted into and
through the said hole in the said sheet a, and a metallic ring or collar faround the
neck of the collar g, and then clenching or fastening the said metallic collar and
ring together by any suitable means, so that the neck g of the collar g is forced
tightly against the internal periphery of the ring or collar fas shewn in enlarged
sectional elevation at Figure 8 of the drawings, as herein substantially described
set forth and fully illustrated on the drawings hereunto annexed.
2ndly. The manufacture of filter-press cloths of or from one main piece or sheet
of material of any suitable shape and size for filtering "slip," and stitching or
otherwise attaching a patch or piece of cotton cloth & of any convenient shape and
size to and about mid-way of the length and width of the main sheet a, forming
a hole or aperture by any suitable means and of any suitable shape and size
through the main sheet a and patch c, binding or stitching the periphery of the
hole or apertures in the usual manner, inserting the neck g of the improved
metallic collar g into and through the said hole in the said main sheet a and
patch c, and placing a metallic ring or collar f. around the neck g of the
collar g, so that the ring f fits slackly around the neck of the collar g,
then clenching or fastening the said metallic collar and ring together by
any suitable means, so that the neck of the collar g is forced tightly against
the internal periphery of the ring or collar f as shewn in enlarged sectional

page_text: elevation at Figure 8 of the drawings, as herein substantially described set forth
and fully illustrated on the drawings hereunto annexed.
Dated this 27th day' of July 1892.
JOHN NEWTON,
Longport, Staffs., Agent for Applicant.