An Improved Method of Coating or Covering the Surface Periphery of Pulleys or Drums to Increase the Gripping Power.
Year: 1896

page_text: Date of Application, 26th Feb., 1896
Complete Specification Left, 26th Nov., 1896-Accepted, 16th Jan., 1897
PROVISIONAL SPECIFICATION.
An Improved Method of Coating or Covering the Surface
Periphery of Pulleys or Drums to Increase the Gripping
Power.
I, ANDREW JARDINE HUNTER, of 125 Great Portland Street, London, W.,
Gentleman, do hereby declare the nature of this invention to be as follows:-
This invention consists in an improved method of conting or covering the surface
or periphery of pulleys or drums to increase the gripping power and prevent the
slipping of belts or bands.
The coating or covering consists of a suitable paper, and a mixture of flour,
borax, sal ammoniac, soda, and sugar in suitable proportions.
A further coating of india rubber waterproofing may be used.
February 26th 1896.
A. JARDINE HUNTER.
COMPLETE SPECIFICATION.
An Improved Method of Coating or Covering the Surface or
Periphery of Pulleys or
of Pulleys or Drums to Increase the Gripping
Power.
I, ANDREW JARDINE HUNTER of 11, Queen Victoria Street, London, E.C.
late of 125 Great Portland Street, London, W., Gentleman 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 :-
The object of this invention is to provide a coating or covering for the surface
or periphery of pulleys or drums to increase the gripping power and prevent the
slipping of belts, and rendering the covering waterproof.
1 first clean the pulleys or drums thoroughly. Cut the paper into strips of
proper width and saturate it with the chemical cement, with a brush, until it is
pliable; then lay the paper on the face of the pulley in layers breaking the joints.
Apply several layers to the pulley with a suitable scraper or piece of sheet iron
and draw each layer of paper tight when applying. Take a knife and trim the
edges with a bevel on the pulley. The belt should not be run on for a few hours.
When it is required to use the covering in damp places, or where exposed to rain
a preparation of crude rubber dissolved in glycerine may be used to waterproof
the coating or covering. The chemical cement I use consists of the following
ingredients and proportions:-
One and a half pounds flour.
Three quarters of a pound granulated sugar.
Two ounces washing soda.

page_text: Stir the compound in one quart of water to dissolve lumps then add five quarts
and boil as ordinary flour paste.
Strong brown paper is to be preferred but other suitable kinds can be used.
It will thus be understood that my invention consists of the application to the
surface or periphery of pulleys or drums of strong brown paper, or other suitable
paper attached to the pulleys or druns by my chemical cement, also rendering
the covering waterproof, all as before described.
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:
1st. The improved method of coating or covering the surface or periphery of
pulleys or drums with paper substantially as herein before described.
2nd. Coating or covering the surface or periphery of pulleys or drums as afore
said the addition thereto and application and use of waterproofing materials
substantially as herein before described.
3rd. The application and use of the chemical cement consisting of the materiala
and in the proportions, substantially as herein before described.
Dated this Twenty-sixth day of November 1896.
A. JARDINE HUNTER.