AN IMPROVED COMPOUND FOR COVERING THE DRAWING-ROLLERS AND OTHER CYLINDERS EMPLOYED IN SPINNING-MACHINERY
Year: 1883

page_text: LETTERS PATENT to Edmund Edwards, of the firm of Edwards and Co:-
Patent Agents and Engineers, of 40, Southampton Buildings, Chancery Lane,
in the County of Middlesex for an Invention of "AN IMPROVED COMPOUND
FOR COVERING THE DRAWING-ROLLERS AND OTHER CYLINDERS EMPLOYED IN
SPINNING-MACHINERY " a communication to him from abroad by Johann
Appelt of Reichenberg, Bohemia, in the Empire of Austria
PROVISIONAL SPECIFICATION left by the said Edmund Edwards at the
Office of the Commissioners of Patents on the 23rd July 1883.
EDMUND EDWARDS, of the firm of Edwards and Co-, Patent Agents and
Engineers, of 40 Southampton Buildings, Chancery Lane, in the County of
Middlesex "AN IMPROVED COMPOUND FOR COVERING THE DRAWING-ROLLERS
AND OTHER CYLINDERS EMPLOYED IN SPINNING MACHINERY [a communication
to him from abroad by Johann Appelt of Reichenberg, Bohemia, in the Empire
of Austria]
"
This invention has for its object an improved compound to be used as a covering
for the drawing-rollers or other cylinders employed in spinning machinery instead
of the usual coverings for such drawing-rollers of leather or india-rubber
The improved compound is prepared in the following mauner :-
50 pounds of gelatine are dissolved in 250 pounds of pure warm water and
there are then added .30 pounds of glycerine of 26° Beaumé, 15 pounds of a
solution containing three per cent of bichromate of potash or tannin and three
pounds of spirit of camphor.
All these ingredients are melted together in a water bath at 167 degrees F. and
are mingled by agitation.
The compound prepared in the way described may either be poured in a layer
of the required thickness over a suitable web of cloth or other woven fabric to
which the mass adheres very firmly or the compound may be poured into moulds
[Price 4d1

page_text: of proper dimensions round the circumference of the rollers. The compound is of
sufficient elasticity and the drawing-rollers covered with it as described or with
web or cloth coated with it are very durable.
If it is required that the material should be softer the proportion of glycerine
may be increased, whilst a greater proportion of solution of tannin or spirit of
camphor renders the compound harder and more resistant.
The improved compound described is not affected either by fatty or oleic acid,
or by the atmospheric air, and it is not liable to wear.
SPECIFICATION in pursuance of the conditions of the Letters Patent filed by
the said Edmund Edwards in the Patent Office on the 23rd January 1884.
EDMUND EDWARDS of the firm of Edwards and Co, Patent Agents and
Engineers of 40, Southampton Buildings, Chancery Lane, in the County of
Middlesex "AN IMPROVED COMPOUND FOR COVERING THE DRAWING-ROLLERS
AND OTHER CYLINDERS EMPLOYED IN SPINNING-MACHINERY" (A communication
to me from abroad by Johann Appelt of Reichenberg, Bohemia, in the empire
of Austria)
This invention has for its object an improved compound to be used as a covering
for the drawing rollers or other cylinders of spinning or doubling machines. It
affords the great advantage over the usual coverings of drawing-rollers made of
leather or india [sic]; that it is neither attacked by fatty or oleic acid, nor by the
atmospheric air, and is capable of considerable wear.
The improved compound is prepared in the following manner-50 pounds of
gelatine are dissolved in 250 pounds of pure warm water and there are then added
30 pounds of glycerine of 26° Beaumé, 15 pounds of a solution containing three
per cent of tannin or bichromate of potash, and pounds of spirit of camphor.
All these ingredients are melted together in a water bath at 167 degrees F and are
mixed together by agitation.
}
The compound prepared in the way described may either be poured in a layer
of required thickness over a suitable web of cloth or other woven fabric to which
the mass adheres very firmly, or the compound may be poured into moulds of
proper dimensions round the circumference of the rollers.
The compound is of excellent elasticity and the drawing or other rollers covered
with it as described or with web or cloth coated with it are very durable. Before
the compound is poured round the rollers as described the latter may either be
coated with a varnish or lac unaffected by damp or heat, or they may be covered
with cotton or woollen web or cloth, or the usual roller-cloth or indiarubber.
These materials may also be employed in the form of tubes or coverings drawn
over the rollers and they may be impregnated with lac or varnish.
If a softer and more elastic material is required the proportions of glycerine and
spirit of camphor should be increased, whilst a greater proportion of solution of

page_text: tannin or bichromate of potash renders the compound harder and less elastic. The
solution of tannin or bichromate of potash has the property of hardening the mass.
A more superficial hardening may also be effected on rollers made of the ordinary
mixture consisting only of gelatine and glycerine, by coating their surface with a
solution of bichromate of potash or tannin.
Having now described the invention and the manner in which it is to be
performed, I claim:-The compound to be used as covering for the drawing-rollers
and other cylinders employed in spinning machinery, and consisting of water,
glycerine, gelatine, solution of tannin or bichromate of potash and spirit of camphor
about in the proportions specified, substantially as herein described.
In witness whereof, I, the said Edmund Edwards, have hereunto set my hand
and seal this 23rd day of January in the year of Our Lord 1884.