Improvements in Driving Drums and Pulleys.
Year: 1890

page_text: Date of Application, 21st Aug., 1890
Complete Specification Left, 16th Apr., 1891-Accepted, 25th Apr., 1891
PROVISIONAL SPECIFICATION.
Improvements in Driving Drums and Pulleys.
I, ELI CROSSLEY, Junior, of 27, Slade Lane, Longsight, Manchester, in the
County of Lancaster, Merchant, do hereby declare the nature of this invention to
be as follows:-
This invention has for its object the prevention of the slipping of driving bands.
or belts on the surfaces of drums, pulleys or wheels when in motion and the
consequent loss of power.
To attain this object I insert and secure in perforations made in the surfaces of
said drums, pulleys or wheels, portions of india rubber, or other suitable material,.
or materials, employed either separately or in combination and of any desired shape
or form, having the properties of providing the necessary amount of grip or hold
to the strap or belt while in motion.
Dated this 20th day of August 1890
ELI CROSSLEY, JUNIOR.
COMPLETE SPECIFICATION.
Improvements in Driving Drums and Pulleys.
I, ELI CROSSLEY, Junior, of No. 27, Slade Lane, Longsight, Manchester, in
the County of Lancaster, Merchant, do hereby declare the nature of this invention,
and in what manner the same is to be performed, to be particularly described and
ascertained in and by the following statement :-
Improvements in Driving Drums and Pulleys for the prevention of the slipping
of the bands or belts when in motion and the consequent loss of power.
This invention relates to the insertion of india rubber, or other suitable gripping,
or adhesive material, or materials, used separately or in combination, in recesses
& perforations, separately or jointly, formed in the surfaces or rims of driving
drums & pulleys and secured so as to prevent their being withdrawn when at work
and also to prevent the slipping of the bands, or belts when in motion.
In carrying out my invention I insert the gripping material in horizontal, or
diagonal lines, crossing, or partly crossing the periphery of the drums or pulleys.
The material may be inserted at requisite distances, in strips, squares, discs, rivet
shape or other desired forms and of such sizes as may be found most suitable for
the purpose.
In preference I use india rubber, made in strips, rounded or otherwise shaped on
the surface, having rectangular, square, round, cone or other shaped projections
on the underside. These strips are inserted in the recesses formed in the rim or
periphery of the drum or pulley, the projecting pieces passing through the holes in
the rim, made for the purpose and these are secured in their places by passing one
or more pins, or split cotters through each of the said projections, so as to rest
against the inside of the rim. Other methods of insertion, dispensing with the
projections, may also be used.
In order that my invention may be more fully understood, I have hereunto
attached a sheet of drawings.
Fig. 1 represents plan of a pulley shewing strips a. a. a. a. inserted in the rim.
6 represents a recess, provided with rectangular holes 1. 1. 1. 1. 1. 1, prepared for
insertion of the strips of gripping material.
c represents a recess, provided with another form of hole, i.e. circular, 2. 2. 2. 2. 2. 2,
prepared to receive the gripping material.

page_text: Fig. 2 is a cross section of the pulley through B-B, shewing the mode of
inserting the adhesive material a in the rim of the pulley p, secured by
pins r. r. r. r. r. r.
Fig. 3 is a cross section of Fig. 2 on the line d―e.
Fig. 4 is a cross section of the pulley through ec, shewing the mode of inserting
the adhesive material a, with circular projections, in the rim of the pulley p, secured
by pins r. r. r. r. r. r.
Fig. 5 is a cross section of Fig. 4, on the line -—g.
Figs. 6, 7, 8 & 9 shew other methods of arranging the insertions in the faces or
rims of pulleys.
said
Having now particularly described and ascertained the nature of my
invention, and in what manner the same is to be performed, I declare that what I
claim is
The combination of a metal drum, pulley or rim, with an adhesive, or gripping
substance inserted therein and the application of the latter thereto, substantially as
described and shewn in the drawings appended.
Dated this 15th day of Anril 1801
ELI CROSSLEY, JUNIOR.