Improvements in the Manufacture of Machine Belting.
Year: 1897

page_text: PROVISIONAL SPECIFICATION.
Improvements in the Manufacture of Machine Belting.
We, WALTER FRANCIS REID, of Fieldside, Addlestone, in the County of Surrey,
Civil Engineer, and EDWARD JOHN VAVASOUR EARLE, of 139, Queen Victoria
Street, in the City of London, Merchant, do hereby declare the nature of this inven-
tion to be as follows:-
Machine belting made of fibrous materials has the disadvantage of expanding
or contracting according to the amount of moisture which it absorbs from the
atmosphere. Impregnation, with drying oils partly removes this tendency but at
the same time diminishes the strength of the fibres through the formation of
organic acids which act upon them. In order to protect the fibres and at the same
time to cement them together and thus add to the strength of the belting we
impregnate the fibrous material of which the belting is composed with a solution
of nitro-cellulose and nitro-linolein or nitro-ricinolein in any of the usual solvents
of nitro-cellulose the manufacture of which solution is described in the specifica-
tion of our Patent No. 21,995 of 1895.
The absorption of the solution may be facilitated by placing the belting to be
treated in a vacuum chamber from which the air can be exhausted previous to the
admission of the solution. Pressure may also be applied to facilitate the penetra-
tion of the solution.
We may treat the belting either in its finished shape or the textile fabric of
which it is composed may be impregnated in single sheets which can be afterwards
joined by sewing or by cementing several thicknesses together by means of the
solution.
The impregnated material may be further consolidated by subjecting it to
pressure.
Improvements in the Manufacture of Machine Belting.
We, WALTER FRANCIS REID, of Fieldside, Addlestone, in the County of Surrey,
Civil Engineer, and EDWARD JOHN VAVASOUR EARLE, of 139, Queen Victoria
Street, in the City of London, Merchant, do hereby declare the nature of this inven-
tion and in what manner the same is to be performed to be particularly described
and ascertained in and by the following statement:―
Machine belting made of fibrous materials has the disadvantage of expanding
or contracting according to the amount of moisture which it absorbs from the

page_text: atmosphere. Impregnation with drying oils partly removes this tendency, but at
the same time diminishes the strength of the fibres through the formation of
organic acids which act upon them. In order to protect the fibres and at the same
time to cement them together and thus add to the strength of the belting we
impregnate the fibrous material of which the belting is composed with a solution
of nitro-cellulose and nitro-linolein or nitro-ricinolein in any of the usual solvents
of nitro-cellulose, the manufacture of which solution is described in the specifica-
tion of our Patent of the 19th day of October 1895, No. 21995.
The strength of the solution varies according to the thickness and texture of
the fibrous material; a solution containing 10 parts by weight of the mixture in
100 parts of solvent will be found suitable in most cases; but with very thick and
compact material a solution of 6 parts of the mixture in 100 parts of solvent may
be used.
The absorption of the solution may be facilitated by placing the belting to be
treated in a vacuum chamber from which the air can be exhausted previous to the
admission. of the solution.
Pressure may also be applied to facilitate the penetration of the solution.
We may treat the belting either in its finished shape or the textile fabric of
which it is composed may be impregnated in single sheets which can be afterwards
joined by sewing or by cementing several thicknesses together by means of the
solution.
The impregnated material may be further consolidated by subjecting it to
pressure.
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. Belting formed of fibrous material combined with a mixture of nitro-cellulose
and nitro-linolein or nitro-ricinolein.
2. The manufacture of belting substantially in the manner described.
Dated this 30th day of July 1898.
WALTER FRANCIS REID.
EDWARD JOHN VAVASOUR EARLE.