Improvements in the Preparation of Dressing for Use in Preparing Cloths or Canvas for Making Waterproof Covers of all kinds such as Tarpaulins, Van Covers or Sheets, Railway Sheets, Drivers Aprons, Horse Loin Cloths, and other Articles.
Year: 1898

page_text: Date of
o of Application, 21st Oct.
1000
Complete Specification Left, 27th Mar., 1899-Accepted, 6th May, 1899
Complete Specification Left, 27th Mar., 1899-Accepted, 6th May, 1899
PROVISIONAL SPECIFICATION.
Improvements in the Preparation of Dressing for Use in Preparing
Cloths or Canvas for Making Waterproof Covers of all kinds such
as Tarpaulins, Van Covers or Sheets, Railway Sheets, Drivers
Aprons, Horse Loin Cloths, and other Articles.
I, THOMAS POTTER COUBRÓ, of 18, Billiter Street, in the City of London,
Tarpaulin Manufacturer, do hereby declare the nature of this invention to be
as follows:-
In the Specification of former Letters Patent granted to me No. 16593 of the
year 1892 and No. 24920 of the year 1897 I described the use of non-oxidizing
or non-drying oil in the treatment of cloths or canvas for making waterproof
articles and the advantages arising therefrom but hitherto this process has not
been very generally adopted on account of the non-oxidizing oil making the
surface of the cloth oily and therefore not so well able to retain the dressings
of ordinary patent dressings" when applied thereto. The object of my present
invention is to obviate this oilyness so as to have all the advantages of the use
of a non-oxidizing oil without its disadvantages for which purpose I prepare a
composition for use with the ordinary dressing. To do this I preferably use a
pure mineral oil consisting of pure hydro-carbons preferably of specific gravity
of about 880.920 with a flash point of about 500° Fahrenheit and without
smell. Or vaseline or the like may be used. I mix this with fine ground
powder of any suitable kind such for instance, as slate, Fuller's or other earth,
cement, lamp black, chromes of any or all colors which when mixed together
in proper proportions form a paste or plaster which is found to readily amalga-
mate with tar and patent oxidizing oil dressings of any and all kinds or colors,
and when applied to the cloth or canvas binds the whole together so that the
cloth retains the dressing more firmly than the dressings now in use whilst at
the same time all the advantages of the use of non-oxidizing oil are retained.
These advantages are stated in the Specification of my Patent No. 24920% but a
further advantage of my present invention is that this paste or plaster can be
sent separately to any dressing works and when mixed with the dressings
ordinarily used and applied by hand in the ordinary way to the made cover,
permanently softens the cover and adheres to the cloth more firmly than the
dressings now in use. Cloths thus treated also take the subsequent dressings
ordinarily used.
66
If desired the non-oxidizing oil, powder and oxidizing oil, tar or 'patent
dressing" may be mixed together in the required proportions and form a single
preparation.
The paste or plaster herein described may be first applied to the cloth or

page_text: canvas to be treated, after which the tar, oxidizing oil or “patent dressing
is applied.
Dated this 21st day of October 1898.
33
HARRIS & MILLS,
23, Southampton Buildings, London, W.C., Agents.
Improvements in the Preparation of Dressing for Use in Preparing
Cloths or Canvas for Making Waterproof Covers of all kinds, such
as Tarpaulins, Van Covers or Sheets, Railway Sheets, Drivers,
Aprons, Horse Loin Cloths, and other Articles.
i
I, THOMAS POTTER COUBRÓ, of 18, Billiter Street, in the City of London,
Tarpaulin 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:-
In the Specification of former Letters Patent granted to me No. 16593 of the
year 1892 and No. 24920 of the year 1897 I described the use of non-oxidizing
or non-drying oil in the treatment of cloths or canvas for making waterproof
articles and the advantages arising therefrom but hitherto this process has not
been very generally adopted on account of the non-oxidizing oil making the
surface of the cloth oily and therefore not so well able to retain the dressings
of ordinary patent dressings" when applied thereto. The object of my present
invention is to obviate this oilyness so as to have all the advantages of the use
of a non-oxidizing oil without its disadvantages for which purpose I prepare a
composition for use with the ordinary dressing. To do this I preferably use a
pure mineral oil-consisting of pure hydro-carbons preferably of specific gravity
of about 880.920 with a flash point of about 500° Fahrenheit and without
smell. Or vaseline or the like may be used. I mix and grind this with fine
ground powder of any suitable kind such for instance as slate, Fuller's or
other earth, cement, lamp black, chromes of any or all colors which when mixed
and ground together in proper proportions form a paste or plaster which is found
to readily amalgamate with tar and patent oxidizing oil dressings of any and all
kinds or colors and with all kinds of varnishes and when applied to the cloth or
canvas binds the whole together so that the cloth retains the dressing more
firmly than the dressings now in use whilst at the same time all the advantages
of the use of non-oxidizing oil are retained. These advantages are stated in the
Specification of my Patent No. 2492097 but a further advantage of my present
invention is that this paste or plaster can be sent separately to any dressing
works and when mixed with the dressings ordinarily used and applied by hand
in the ordinary way to the made cover, permanently softens the cover and adheres
to the, cloth more firmly than the dressings now in use. Cloths thus treated
also take the subsequent dressings ordinarily used.
In practice I prepare the above mentioned paste or plaster by mixing or
grinding say 1 gallon of non-oxidizing mineral oil with about 9lbs. of dry powder,
such as ochres, blacks of all kinds, such as gas carbon, vegetable, lamp or mineral
blacks, dry zinc or lead powder, and earthy dry powders; all kinds of dry powders
used in any kind or paint will also answer the purpose. These dry powders may
be used separately or any two or more may be used conjointly.
The paste or plaster hereinbefore described may be first applied to the cloth or

page_text: canvas to be treated, after which the tar, oxidizing oil or "patent dressing" is
applied.
If desired the non-oxidizing oil, powder and oxidizing oil, tar or "patent
dressing" may be mixed together in the required proportions and form a single
preparation.
This may be effected in the following manner, I mix or grind the above paste
or plaster of non-oxidizing mineral oil and powder with the usual black or
other colored paste, made of any suitable substance or color, ground in an
oxidizing linseed oil, as generally used, in about the proportion of about to
of the non-oxidizing paste with about to of the usual oxidizing paste. The
non-oxidizing paste is then found to have fully combined with or impregnated
the entire mass. When required for use this compound paste is thinned in the
usual manner and proportion with linseed oil. By this means all the advantages
of the use of mineral oil are obtained without the disadvantages of its exuding
from or causing the preparation to peel off the cloth to which it has been applied.
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 improved preparation of dressing for use in preparing cloths or canvas
for making waterproof covers and other articles such preparation consisting in
the combination of fine dry ground powders of the character herein referred to
with non-oxidizing and oxidizing oil substantially as herein set forth.
2. In the preparation of dressing for use in preparing cloths or canvas for
making waterproof covers and other articles the combination of fine dry ground
powders with a non-oxidizing oil to form a paste or plaster which may be applied
to the cloth or canvas to be treated before the tar, oxidizing oil or "patent dressing'
is applied thereto or which may be mixed with the usual" patent dressing " ground
in linseed oil and form a single preparation, to be afterwards thinned with linseed
oil or may be ground with sufficient oxidizing oil, substantially as herein set forth.
Dated this 27th day of March 1899.
HARRIS & MILLS,
23, Southampton Buildings, London, W.C., Agents.