Improvements in Treating Vegetable Parchment, to Make it Applicable as an Electric Insulating Material, and for other purposes.
Year: 1895

page_text: Date of Application, 2nd July, 1895
Complete Specification Left, 2nd Sept., 1895-Accepted, 30th Nov., 1895
PROVISIONAL SPECIFICATION.
Improvements in Treating Vegetable Parchment, to Make it
Applicable as an Electric Insulating Material, and for other
purposes.
JOSEPH AUGUSTUS LONDON 29 Eldon Street, Newcastle-on-Tyne Paper
Maker, HARRY PERCY BAILEY 59 Westgate Road, Newcastle-on-Tyne Agent,
do hereby declare the nature of this invention to be as follows :-
To effect our purpose we use pure vegetable parchment, which is practically
waterproof, grease proof, non absorbent and indistructable by acids or caustic soda.
It is made from vegetable fibre such as cotton, wood pulp or other similar material.
This is parchmentized by acids, either in webs, sheets or moulded to any desired
shape, thoroughly washed with or without soda, and passed through baths of
glycerine to make it as pliable as necessary and to prevent curling. This process
converts it into a substance similar to the prepared skin of the kid or goat. We
can use this material for electric conductors also in the manufacture of all water-
proof clothing, boots, shoes and horse shoes, mechanical uses, for rugs, blankets,
cooking and other purposes.
Dated this 1st day of July 1895.
JOSEPH AUGUSTUS LONDON.
HARRY PERCY BAILEY.
Improvements in Treating Vegetable Parchment, to Make it
Applicable as an Electric Insulating Material, and for other
purposes.
We JOSEPH AUGUSTUS LONDON 29 Eldon Street Newcastle-on-Tyne Paper
Maker HARRY PERCY BAILEY, Westgate Road Newcastle-on-Tyne Agent
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 :-
The nature of this invention is to apply the vegetable parchment for the purposes
herein named.
The process of manufacture is as follows. A blotting paper is at first made
from cotton material, cotton rags, sulphate, or sulphite wood pulps, this is run
on reels in the ordinary way, slitting or cutting the blotting to any desired width.
This blotting is passed through a trough of strong sulphuric acid, say 130°
Twaddells, hydrometer and at as low a temperature as possible (32° Fah. being
much preferred) keeping all moisture and steam from this process as much as
possible, as the moisture increases the temperature, so much to be avoided.
Immediately the parchment passes from the acid the first washing with water
takes take and rewound on another reel until all the vegetable parchment that
was blotting, is wound on to this reel, the speed of this process is regulated by the
thickness of the parchment made, viz. from 9 ft. to more per minute.
n

page_text: It is then rewound the second, third, and fourth time, washing each time by
4 sprays of water, with a fall of 30 ft. if possible to give force, these 4 sprays are
arranged, 2 playing on the top side of the sheet and 2 on the under side. If necessary
weak soda can be used, to neutralize any free acids. The object of 4 separate
washings and 4 reelings is to gradually complete the parchmentizing process,
making it stronger, more skin like more waterproof and grease proof. By a
continuous washing 4 times without the reeling 4 times, it deprives the parchment
of these very desirable qualities. It is then passed through a bath of glycerine
to make it as pliable as necessary and to prevent curling, the glycerine can be used
from 4° Twaddell upwards according to the use the vegetable parchment is put to. 1
For the process of drying, we use one drying cylinder about 4' 6" diatr. any
convenient width, with 40 lb. steam, an ordinary dry felt, and driven by a cast iron
or other roll about 14 in. diatr., same width as the drying cylinder and covered with
a woollen jacket, this roll is worked with screws and drives as well as the drying
cylinder ou top of it, the winding reel for the parchment which is under it. This
jacketed roll is provided with levere and weights which prevents both curling and
broken paper. The vegetable parchment is then completed and can be cut to any
desired size and sheeted in the usual way.
The applications are as follows-
1st. For insulating electrical conductors, vegetable parchment will take the
place of paper india rubber, silk, cotton and other braids and the like.
2nd. For mechanical purposes in place of india rubber, asbestos, fibre, woodite
for washers and the like.
3rd. For waterproof clothing, in place of india rubber & the like.
4th. Rugs, in place of woollen and india rubber material..
5th. Boots and shoes and over shoes, in place of leather, india rubber and gutta
perchu.
6th. Horse shoes in place of iron or india rubber for pads.
7th. Blankets in place of woollen or cotton goods.
8th. Cooking in place of cloths and the like and for other purposes.
Having now particularly described and ascertained the nature of our said inven-
tion, and in what manner the same is to be performed, we declare that what we
claim is :--
(1.) The great economy in the use of this material over any kind of paper now
in use over leather, vulcanized india rubber, gutta percha, ebonite, asbestos, wool,
cotton, and the like.
!!
(2.) Its durability owing to the chemical treatment it has been subjected to.
(3.) Its waterproof, grease, proof, and other like properties.
(4) Being impervious to moisture it is non-absorbent, and therefore resists all
capillary attraction.
Dated Lois 51st day of August 1950.
[Jated LOIS DISL ULY OF Augus LOJON
JOSEPH AUGUSTUS LONDON.
HARRY: PERCY BAILEY.