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
No. 157. FELTING INDIA-RUBBER WITH COTTON FIBRE. I claim incorporating
the fibres of cotton or other substance with India-rubber by preparing
the fibres of a fleece or bat of cotton or other fibrous substance into
a sheet of India-rubber in the green state, without subjecting the
fibres, after they have been incorporated to a stretching or drawing
operation, substantially as described.
_One hundred and twenty-eighth_, to James Reynolds, of New York City.
For Machine for making gutta-percha pipes and covering telegraph wires.
This invention is for the purpose of forming, tubing, or coating
wires—both operations being substantially alike—by forcing the
gutta-percha, while rendered plastic by heat, through a die. The
necessary pressure for this purpose is applied by a piston working in a
cylinder, in which the material is placed and kept heated, or by other
suitable forcing apparatus.
One improvement consists in connecting the cylinder with an air pump, or
other suitable exhausting apparatus, whereby any air remaining in the
said cylinder after it has been filled as full as possible with
gutta-percha and closed, may be extracted before applying the pressure.
The manufactured article is thus rendered free from blow holes, and is
perfectly firm. This is a result of great importance for small tubing
and the covering of fine wire.
A second improvement consists in arranging the die and core by which the
tube is produced or the covering of the wire performed, in a position
transverse to the direction in which the piston works to produce the
pressure, to allow a hollow core to be used for the admission of air
into the tube as fast as it is formed, and also to prevent it from
collapsing by the formation of a vacuum within. The same arrangement
also permits the passage of the wire through the die when it is being
covered by the percha.
A third improvement consists in providing the stomach in which the die
is placed, with an opening, to allow of the constant escape of a certain
quantity of material during the operation. By this means the quality of
the manufactured article is rendered more uniform. Without such an
arrangement it is almost impossible to produce small tubing or cover
fine wire with any degree of uniformity of thickness.
A fourth improvement consists in the employment of a continuously
revolving trough of water, suitably arranged to receive the tube or
covered wire as fast as it leaves the die, and coil it up in the water
to cool it, to prevent the coils from sticking together.
_One hundred and twenty-ninth_, to Thomas C. Wales, of Dorchester,
Mass., February 2, 1858. For Water-proof Gaiter Shoes and Boots.
Public-domain text, read in full here on John Shaqi.
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