IMPROVEMENTS IN BELTS FOR TRANSMITTING POWER
Year: 1877

page_text: LETTERS PATENT to Frank Wirth, of the Firm of Wirth and Company, Patent
Solicitors, at Frankfort-on-the-Main, in the Empire of Germany, for the
Invention of "IMPROVEMENTS IN BELTS FOR TRANSMITTING POWER." A
communication from Pickhardt and Sturmberg, of Elberfeld, in the Empire of
Germany.
Sealed the 19th March 1878, and dated the 22nd September 1877.
PROVISIONAL SPECIFICATION left by the said Frank Wirth at the Office
of the Commissioners of Patents on the 22nd September 1877.
"
FRANK WIRTH, of the Firm of Wirth and Company, Patent Solicitors, at Frank-
fort-on-the-Main, in the Empire of Germany. IMPROVEMENTS IN BELTS FOR
TRANSMITTING POWER." [A communication from Pickhardt and Sturmberg, of
Elberfeld, in the Empire of Germany.]
The said Invention relates to belts or bands for the transmission of power, and
comprises the combination of a chain, preferably a six-fold chain, with leather, in
such a manner as to be able to bend the entire belt sufficiently.
The power of draught caused by the transfer to the pulley affects only the chain ;
the leather back only affects the adhesiveness.
The same result is effected by covering the said pulley with leather or other
suitable material if the wire belt has no leather back.
Experiments have shown that with broad pulleys and corresponding broad wire
belts the leather back or the covering of the pulley with belting is not required,
there being already sufficient adhesiveness; in this case a simple border only will
be quite sufficient.
Should it be required to shorten the belt after it has been in work a short time,
it can be very quickly and easily done by taking the required number of ends of
wire out of the belt and joining the belt again at both ends. Any number of single
joints or ends, if made straight at the extremity, can be twisted or screwed out.
Poise G21

page_text: After the required number has been taken out the ends of the belt can easily be
joined by screwing or twisting in again a single joint or number of joints as
required.
The border as well as the back of the wire belt may be made of india-rubber,
Moreover the whole
hemp, hair-border banding, or the like, instead of leather.
wire belt can be filled up with dissolved or melted rubber.
The said Invention consists therefore, principally, in the wire chain or chains,
with or without a back or border, of any suitable material, serving as a belt for the
purpose of transferring mechanical power.
SPECIFICATION in pursuance of the conditions of the Letters Patent filed by
the said Frank Wirth in the Great Seal Patent Office on the 21st March
1878.
FRANK WIRTH, of the Firm of Wirth and Company, Patent Solicitors, at Frank-
fort-on-the-Main, in the Empire of Germany. "IMPROVEMENTS IN BELTS FOR
TRANSMITTING POWER." A communication from Pickhardt and Sturmberg, of
Elberfeld, in the Empire of Germany.
The said Invention relates to belts or bands for the transmission of power, and
comprises the combination of a chain, preferably a six-fold chain, with leather, in
such a manner as to be able to bend the entire belt sufficiently.
The power of draught caused by the transfer to the pulley affects only the chain,
the leather back only affects the adhesiveness.
The same result is effected by covering the said pulley with leather or other
suitable material if the wire belt has no leather back.
Experiments have shown that with broad pulleys and corresponding broad wire
belts the leather back or the covering of the pulley with belting is not required,
there being already sufficient adhesiveness; in this case a simple border only of
leather or other material will be quite sufficient.
In the accompanying Drawing,
Figures 1 and 2 shew portions of single wire chain belts.
Figure 3 shews a portion of my six-fold twisted wire belt with leather borders.
Figures 4 and 5 illustrate the construction of the said six-fold twisted wire belt
with a leather back and borders, secured by rivets.
a is the wire; b is the leather or other border; c is the leather back; d, d, are
rivets.
Should it be required to shorten the belt after it has been in work a short time,
it can be very quickly and easily done by taking the required number of ends of
wire out of the belt and joining the said belt again at both ends, as will be readily
understood by referring to Figures 1 and 2 of the Drawing. Any number of single
joints or ends, if made straight at the extremity, can be twisted or screwed out.
After the required number has been taken out the ends of the belt can easily be
joined by screwing or twisting in again a single joint or number of joints as
required.

page_text: The border as well as the back of the wire belt may be made of india-rubber,
hemp, hair, cloth banding, or the like, instead of leather. Moreover the whole
wire belt may be filled up with dissolved or melted rubber.
Having thus fully described the said Invention, and the manner of performing
the same,
I wish it understood that I claim, a wire chain or chains, with or without
a back or border of any suitable material, serving as a belt for the purpose of
transferring mechanical power, as above set forth.
In witness whereof, I, the said Frank Wirth, have hereunto set my hand and
seal, this Fifteenth day of March, in the year of our Lord One thousand eight
hundred and seventy-eight