IMPROVED APPARATUS FOR TRANSMITTING MOTION TO DRIVING BANDS AND TRACTION ROPES
Year: 1876

page_text: LETTERS PATENT to John Good, of Brooklyn, in the State of New York, United
States of America, but at present residing at Leeds, in the County of York,
Machinist, for the Invention of "IMPROVED APPARATUS FOR TRANSMITTING
MOTION TO DRIVING BANDS AND TRACTION ROPES."
Scaled the 5th January 1877, and dated the 28th July 1876.
PROVISIONAL SPECIFICATION left by the said John Good at the Office of
the Commissioners of Patents on the 28th July 1876.
JOHN GOOD, of Brooklyn, in the State of New York, United States of America,
mt at present residing at Leeds, in the County of York, Machinist. "IMPROVED
APPARATUS FOR TRANSMITTING MOTION TO DRIVING BANDS AND TRACTION ROPES."
The object of this Invention is to provide a gripping apparatus which will take
such a bite of a driving band or traction rope as will remove the liability of the
band or rope to slip without injuriously acting upon it.
This apparatus consists of a driving pulley of peculiar construction, and an
endless chain which interlocks therewith, a space being provided between the inter-
locking surfaces for the reception of the driving band or traction rope.
The driving pulley I form of two discs or wheels provided on their periphery
with lugs to receive cross bars of round iron. Between these lugs are spaces
shaped to receive corresponding bars carried by the endless chain which passes over
tension pulleys so situate with regard to the driving pulley as to hold the chain
in contact therewith, and cause it to lap over a given portion of the periphery of
the driving pulley.
When the driving band is cylindrical in cross section I crank the cross bars of
both the pulley and the chain, so that they may offer a circular space for the band
to lie in, and I so adjust the tension rollers that the bars of the chain and
pulley will put any desired grip upon the band.
When using a flat band, the gripping bars will be straight, and I may find it
convenient to insert within the driving pulley a cylinder coated with india-rubber
or equivalent elastic material, which will form a bed for the driving band and hold
it firmly under the pressure of the bars of the endless chain. This arrangement
will enable me to reduce the number of bars in the chain and pulley without
detracting from the efficiency of the nip.

page_text: SPECIFICATION in pursuance of the conditions of the Letters Patent filed by
the said John Good in the Great Seal Patent Office on the 27th January 1877.
JOHN GOOD, of Brooklyn, in the State of New York, United States of America,
but at present residing at Leeds, in the County of York, Machinist. "IMPROVED
APPARATUS FOR TRANSMITTING MOTION TO DRIVING BANDS AND TRACTION ROPES."
The object of this Invention is to provide a gripping apparatus which will take
such a bite of a driving band or traction rope as will remove the liability of the
band or rope to slip without injuriously acting upon it.
The mode in which I propose to effect this object is illustrated in the accompany-
ing Drawing, whero Fig. 1 is a side elevation of the gripping apparatus, and
Fig. 2 is a partial transverse section of the same.
This apparatus it will be seen consists of a driving pulley A of peculiar con-
struction, and an endless chain B which runs over tension rollers C, C¹, and inter-
locks with the driving pulley; a space being provided between the interlocking
surfaces for the reception of the driving band or rope D.
The driving pulley A is formed of two discs or wheels a, a, provided on their
periphery with lugs b to receive cross bars c of round iron. Between these lugs
are spaces shaped to receive corresponding bars] d, carried by the endless chain
B, the tension pulleys over and under or around which the chain passes are so
situate with regard to the driving pulley A as to hold the chain in contact there-
with and cause it to lap over a given portion (one half or less) of the periphery of
the driving pulley.
In the Drawing I have shewn the driving band or ropes cylindrical in cross
section, when this form of rope is employed I crank the cross bars c and d of the
pulley and chain so that they may offer a circular space for the band to lie in, and
I so adjust the tension rollers C, C₁, that the bars of the chain and pulley will put
any desired grip upon the band. When using a flat band the gripping bars of the
chain and pulley will be made straight, but they will be so adjusted relatively to
each other as to ensure that the band shall take an undulating form when pass-
ing between them. By this means all liability of the band to slip between the
gripping surfaces will be removed. I may find it convenient to insert within the
driving pulley a cylinder coated with india-rubber or equivalent elastic material,
which will form a bed for the driving band and hold it firmly under the pressure
of the bars of the endless chain.
This arrangement, which is illustrated at Fig. 3, will enable me to reduce the
number of bars in the chain and pulley without detracting from the efficiency of
the nip.
Having now set forth the nature of my Invention of "Improved Apparatus for
Transmitting Motion to Driving Bands and Traction Ropes," and explained the
manner of carrying the same into effect, I wish it to be understood that under the
above in part recited Letters Patent I claim, the use of interlocking holding surfaces,
constructed as above described, for gripping bands or ropes and transmitting power
through the same for the lifting and the traction of loads, the working of tilling
implements, and for the like purposes.
In witness whereof, I, the said John Good, have hereunto set my hand and
seal, the Thirteenth day of January, in the year of our Lord One thousand
eight hundred and seventy-seven.
JOHN GOOD. (L.S.)