IMPROVEMENTS IN DRIVING BELTS OR STRAPS
Year: 1884

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I EDWIN POWLEY ALEXANDER of 36 Southampton Buildings in the County of
Middlesex, Fellow of the Institute of Patent Agents do hereby declare the nature
of said invention for IMPROVEMENTS IN DRIVING BELTS OR STRAPS " (com-
municated to me from abroad by Gautier frères of Lyons in the Republic of
France,) to be as follows:-
This Invention relates to a peculiar construction of driving belts or straps
whereby greater flexibility and strength are ensured, and consists essentially in
enclosing or embedding within the body of a woven fabric and by the fabric itself,
iron or steel ropes or flat bands or ribbons of metal such as steel, whether annealed
or not, iron, copper and the like, in such manner that the said ropes or bands shall
preserve their natural tension, the same being disposed in parallel series longi-
tudinally in any number according to their width. The fabric itself serves to
maintain the said metallic ropes or bands in parallel position and is by their action
prevented from appreciable extension under strain or hygrometric influences. The
said improved driving belts or straps may be made of any length and width and
in one piece only. Belts or straps formed with the metal bands or ribbons are
specially adapted as loose driving belts where great speed is required without any
great resistance, but those in which wire ropes or cables are embedded are more
particularly adapted for driving belts used in a state of tension where considerable
resistance has to be overcome.
EDWIN P. ALEXANDER,
Fel, Inst. P.A,

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I EDWIN POWLEY ALEXANDER of 36 Southampton Buildings in the County of
Middlesex Fellow of the Institute of Patent Agents do hereby declare the nature
of the invention for "IMPROVEMENTS IN DRIVING BELTS OR STRAPS (communi-
cated to me from abroad by Gautier frères of Lyons in the Republic of France)
and in what manner the same is to be performed, to be particularly described and
ascertained in and by the following statement:—
"
This invention relates to a peculiar construction of driving belts or straps (which
I designate "Courroies dynamiques") whereby greater flexibility and strength are
ensured and consists essentially in enclosing or embedding within the woven body
of the fabric composing the belt, iron or steel cables or ropes by preference of the
System Tragoning," as shown in Figures 1 and 1ª of the accompanying drawings;
or fat metal blades, strips or bands.of steel (which may or may not be softened or
annealed), or bands or strips of iron, copper or other suitable'metal as shown in
Figures 2 and 2 in such manner that these metal strips or cables shall preserve
their natural tension and may be employed in connection with a single belt on the
same pulley in parallel series of any number according to the width of the belt.
The fabric itself serves to maintain the metal strips, bands or cables, in their parallel
positions whilst the said strips or cables serve to prevent any extension or stretching
of the belt under strains or hygrometric influences the belt being thus practically
inextensible (see figure 3). The belts are in one single piece and may be of any
desired length and width. The flat metal strips or bands are moro particularly
applicable to slack belts for driving at high speeds where great resistance is not
required. The wife cables or ropes on the contrary are more suitable for belts
under tension required to withstand great strains.
Having now particularly described and ascertained the nature of the said
invention and in what manner the same is to be performed I declare that what
I claim is
The peculiar construction of driving belts hereinbefore described and illustrated
by way of example in the Drawings annexed the essential features of which consist
in enclosing or embedding in a woven fabric by means of the fabric itself cables or
ropes of iron steel or other metal wire, or flat metal bands or strips of steel copper
or other metal, substantially as and for the purpose specified.
Boted thi
3
110OK