Improvements in or relating to the Manufacture of Waterproof Bags, Applicable for Holding Sponges and for other Purposes.
Year: 1886

page_text: Date of Application, 16th Apr., 1886.
Complete Left, 7th Jan., 1887.
Complete Accepted, 1st Mar., 1887.
PROVISIONAL DIMITTUATION.
Improvements in or relating to the Manufacture of Waterproof
Bags, Applicable for Holding Sponges and for other Purposes.
I, HUNTER SPENCE of 12, Rumford Place, Liverpool in the County of Lancaster
Merchant, do hereby declare the nature of this invention to be as follows:-
This invention consists in a new process of making light rubber coated bags and in
the bags themselves. At present the material is made in sheets cut out, folded over,
and the sides and ends pasted together. Uncoated linen and cotton bags are some-
times made in long pieces or rolls of many hundred bags formed of two separate layers
woven together only in strips crossing each other at intervals, these strips are cut
down the centre, (or the bottom in the case of one direction) and thus the half strips
form the sides, and a whole but narrower strip the bottom woven together, and the
bags thus require no seaming or sewing.
Now my invention consists in weaving the foundation of the waterproof bags on
this plan, and taking the long pieces thus formed and waterproofing them on both sides
and cutting. With these bags no gumming or pasting is required, but the structure
is much stronger in the sides and bottom than ordinary bags. These bags can be
woven to any size or pattern, coloured any colour usual with waterproof material and
ornamented or stamped in any desirable manner.
Wm. P. Thompson & Boult,
323, High Holborn, London,
Patent Agents for the Applicant.

page_text: Bags, Applicable for Holding Sponges and for other Purposes.
I, HUNTER SPENCE, of 12 Rumford Place, Liverpool, in the County of Lancaster,
Merchant, 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 invention is for an improved process of making rubber coated bags, and for
the bags themselves. At present the waterproof material is made in sheets, then it is
cut to the required size, folded over, and the sides and ends pasted together. Uncoated
linen or cotton bags are sometimes made in long pieces or rolls of hundreds of bags
formed of two separate layers, woven together, only in strips crossing each other at
intervals these strips are cut down the centre (or through or below the bottom in
the case of one direction) and thus half the strips form the sides of the bag, and a
whole or half strip forms the bottom woven together, and the bags thus require no
seaming or sewing.
My invention consists in weaving the foundation of the bags on the aforesaid plan,
and taking the long pieces thus formed, waterproofing them with rubber, or rubber
composition in the usual manner on both sides of the piece-that is on the outside of
the bags and then cutting.
Referring to the drawings-
Figure 1 represents the manner in which the material is supplied in long pieces or
rolls formed of separate layers, and woven only in strips A, B, and G. Figure 2 shows
the two separate layers of material woven at A and B. Figure 3 shows an alternative
way of cutting off the bags.
The strip B can be cut down the centre in the position shown by the line D, the
bags are also cut through the woven strip C or below it in the position shown by the
line D, or the cuts could follow lines E and F as shown in Figure 3. This severs
them from the roll, and leaves the tops of the next two bags open.
When required
to form the bags closed at the top, the cutting on line F may be dispensed with, and
the cutting only carried out on lines D and E, each section will then form a closed
bag into which any small opening can be made. By increasing or decreasing the
width of the material, any convenient number of bags may be made, providing of
course all the longitudinal strips, except the outer ones if used, are made of sufficient
width. The bags thus require no seaming or sewing, but are severed from the roll
with the required number of sides woven together. No gumming or pasting is required
and the structure is much stronger in the sides and bottom than ordinary bags. The

page_text: bags can be woven to any size or pattern, colored any color usual with waterproof
material, and ornamented or stamped in any desirable manner.
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. The process of manufacturing waterproof bags, which consists in weaving the
fibrous or textile portion of the bags in continuous lengths in the manner described,
waterproofing said lengths on both sides, and cutting up into separate bags, or series
of bags, not requiring further manipulating in order to form their bottoms, sides,
or tops.
2. The waterproof bags woven, and waterproofed in the manner substantially as
described.
WM. P. THOMPSON & BOULT,
323, High Holborn, London,
Agents.