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The Boot and Shoe Manufacturers' Assistant and Guide.: Containing a Brief History of the Trade. History of India-rubber and Gutta-percha, and Their Application to the Manufacture of Boots and Shoes. Full Instructions in the Art, With Diagrams and Scales, Etc., Etc. Vulcanization and Sulphurization, English and American Patents. With an Elaborate Treatise on Tanning.

History

The Boot and Shoe Manufacturers' Assistant and Guide.: Containing a Brief History of the Trade. History of India-rubber and Gutta-percha, and Their Application to the Manufacture of Boots and Shoes. Full Instructions in the Art, With Diagrams and Scales, Etc., Etc. Vulcanization and Sulphurization, English and American Patents. With an Elaborate Treatise on Tanning.

Footwear industry; Gutta-percha; Rubber; Tanning

GEORGE SIMPSON, Newington, Butts, chemist, and THOMAS FOSTER, Stratham,
manufacturer. For improvement in manufacturing, or treating solvents of
India-rubber, and of other gums or substances. Patent dated April 26,
1849.

_First._ Bisulphuret of carbon is placed in an iron still, the top of
which opens into an earthen ware vessel containing pentuchloride of
antimony, and a pipe leads from the top of this vessel, to the worm of
an earthen-ware condensor. The still and first vessel are heated by
steam jackets. The resulting product flows from the condensor to a
reservoir, after which, it is rectified by lime and is then ready for
use as a solvent. Before rectification, the India-rubber, gutta-percha,
or other gum may be immersed in it, or exposed to its fumes and thereby
rendered less liable to injury from the effects of cold or heat.

_Second._ Coal is purified and rendered applicable as a solvent of these
gums by being subjected to a similar process, chloride of lime in
solution being substituted for the pentuchloride of antimony.

_Claims._ 1st, The manufacture of chloride and bichloride of carbon, and
its application as a solvent of India-rubber, gutta-percha, and other
gums not soluble in water, and the mode of treating rubber, as
described.

_Second._ The mode of treating coal oil with chloride of lime, for the
purpose of obtaining a solvent of the before mentioned gums.


TO GUSTAVE EUGENE MICHEL GERARD, of Paris, in the Republic of France.
For improvements in dissolving caoutchouc (India-rubber), and
gutta-percha. [Sealed May 7, 1850.]

This invention consists in certain improved means of dissolving
India-rubber and gutta-percha.

The patentee commences his specification by remarking that heretofore
all solutions of India-rubber, whether clear or thick, have possessed
great coherence and elasticity; the solvent, whatever it may have been,
has always expanded the gum to a great extent; and as it is not until
after this has taken place that the real act of dissolving the gum
commences, a large quantity of the solvent is consequently required.
* * *

Public-domain text, read in full here on John Shaqi.

Opening the text

History

The Boot and Shoe Manufacturers' Assistant and Guide.: Containing a Brief History of the Trade. History of India-rubber and Gutta-percha, and Their Application to the Manufacture of Boots and Shoes. Full Instructions in the Art, With Diagrams and Scales, Etc., Etc. Vulcanization and Sulphurization, English and American Patents. With an Elaborate Treatise on Tanning.

Footwear industry; Gutta-percha; Rubber; Tanning

GEORGE SIMPSON, Newington, Butts, chemist, and THOMAS FOSTER, Stratham,
manufacturer. For improvement in manufacturing, or treating solvents of
India-rubber, and of other gums or substances. Patent dated April 26,
1849.

_First._ Bisulphuret of carbon is placed in an iron still, the top of
which opens into an earthen ware vessel containing pentuchloride of
antimony, and a pipe leads from the top of this vessel, to the worm of
an earthen-ware condensor. The still and first vessel are heated by
steam jackets. The resulting product flows from the condensor to a
reservoir, after which, it is rectified by lime and is then ready for
use as a solvent. Before rectification, the India-rubber, gutta-percha,
or other gum may be immersed in it, or exposed to its fumes and thereby
rendered less liable to injury from the effects of cold or heat.

_Second._ Coal is purified and rendered applicable as a solvent of these
gums by being subjected to a similar process, chloride of lime in
solution being substituted for the pentuchloride of antimony.

_Claims._ 1st, The manufacture of chloride and bichloride of carbon, and
its application as a solvent of India-rubber, gutta-percha, and other
gums not soluble in water, and the mode of treating rubber, as
described.

_Second._ The mode of treating coal oil with chloride of lime, for the
purpose of obtaining a solvent of the before mentioned gums.


TO GUSTAVE EUGENE MICHEL GERARD, of Paris, in the Republic of France.
For improvements in dissolving caoutchouc (India-rubber), and
gutta-percha. [Sealed May 7, 1850.]

This invention consists in certain improved means of dissolving
India-rubber and gutta-percha.

The patentee commences his specification by remarking that heretofore
all solutions of India-rubber, whether clear or thick, have possessed
great coherence and elasticity; the solvent, whatever it may have been,
has always expanded the gum to a great extent; and as it is not until
after this has taken place that the real act of dissolving the gum
commences, a large quantity of the solvent is consequently required.
* * *

Public-domain text, read in full here on John Shaqi.

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