Improvements in Elastic Pulleys, Drums, and Wheels for Reducing Strain on Machinery.
Year: 1893

page_text: Date of Application, 3rd July, 1893
Complete Specification Left, 29th Mar., 1894-Accepted, 5th May, 1894
PROVISIONAL SPECIFICATION.
Improvements in Elastic Pulleys, Drums, and Wheels for Reducing
Strain on Machinery.
I, RICHARD GEORGE BENNETT of 9 Kelmscott Road, Wandsworth Common,
London S.W. Accountant, do hereby declare the nature of this invention to be as
follows:-
My invention has reference to improvements in elastic coverings for pulleys
drums and wheels, such pulleys drums and wheels being used for transmitting
power by way of belts et cetera, the object being to increase friction and reduce
strain.
In carrying out my invention I cover the pulleys drums and wheels with a
suitable sized band of rubber or other elastic material, strong enough to bear the
strain and surging of the belt, I next take a suitable sized piece of canvas, linen or
other suitable fabric and cement it tightly round the rubber covering and fasten it
in the most suitable manner, the canvas side working in contact with the belt.
The pulleys may be turned, rough, or in groves or other uneven surfaces, to
prevent the rubber and canvas band slipping on the pulley, or strings, laces, wires,
loops, or other attachments may be used between the canvas and rubber, and the
pulley, or through holes or cuttings therein.
In the annexed drawing C is the canvas cover, R the rubber band, P the pulley,
A the axle, Fig. 2 a section.
The compound canvas and rubber band may be made separately and placed on
the pulley by any suitable way of doing so.
The pulley, rubber, and canvas may be joined together wholly or partly by
vulcanizing and studs.
Improvements in Elastic Pulleys, Drums, and Wheels for Reducing
Strain on Machinery.
I RICHARD GEORGE BENNETT, of 9 Kelmscott Road, Wandsworth Common,
London, S.W. Accountant, 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 :-
My invention has reference to improvements in elastic coverings for pulleys,
drums, and wheels, such pulleys, drums, and wheels being used for transmitting
power by way of belts, et cetera, the object being to increase friction and reduce
strain.
In carrying out my invention I cover the pulleys, drums, etc. with a suitable sized
band of rubber, or other elastic material strong enough to bear the strain and
surging of the belt, see R in the annexed drawing. I next take a suitable sized piece
of canvas linen or a thickness of hardened rubber, ebonite, vulcanite, fibre and rubber
mixed, leather, whaleite, woodite, or other suitable fabric; these may be formed in
one with, or cemented or vulcanized to the outside of the soft rubber band, see C,
and may be combined with an outside metal covering. They may be applied to the
rims of the pulley P in sections, continuous or split bands or rings, or by other

page_text: suitable means and fastened securely together, and again fixed with an outside
covering according to the work to be done, the canvas &c. side working in contact
with the belt. The pulleys may be turned, rough or in grooves or other uneven
surfaces to prevent the compound rubber canvas &c. band, slipping. Fig. 2 P₁
shows such a groove fixed on the pulley to prevent side slipping, and Fig. 1, R.,
shows projections to prevent annular slipping, but I do not coufine myself to this
way, as cementing, vulcanizing, or other attachments, as usual in fixing rubber
bands to pulleys, may be used if suitable. The hardened part of the compound
rubber band may also be fixed to the soft rubber band by ribs etc., the grooves may
be in sections, or continuous, or the pulley might be split and the two halves applied
and bolted together so as to embrace and hold the rubber band. In some cases the
outside metal band or ring may be heated and shrunk over the ebonite, etc.
pulley axle is at A.
The
Having now particularly described and ascertained the nature of my said inven-
tion, and in what manner the same is to be performed, I declare that what I
claim is
1. A soft elastic rubber cushion base R, with a covering of hardened rubber or
ebonite, vulcanite, fibre and rubber mixed, leather, whaleite, woodite, or other
suitable fabric or material, and so forming a compound cushion or elastic covering
or band substantially as described.
2. A compound cushion band for application to the rims of pulleys and composed
of a base of elastic rubber with a surrounding covering of hardened rubber or
ebonite, vulcanite, fibre and rubber mixed, leather, whaleite, woodite, or other
suitable fabric or material or compound in combination with or without a suitable
outside covering of metal, etc., substantially as described.
3. The combination of parts comprising an elastic band for a pulley and consisting
of a grooved shaped ring, Fig. 2. P₁, of metal or suitable substance secured to or
forming part of the rim of a pulley and containing the aforesaid compound cushion
band with or without an outer surrounding covering of metal or suitable substance
substantially as described.
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SML 1004