IMPROVEMENTS IN WRINGING ROLLERS FOR WOOL WASHING AND SIMILAR MACHINES
Year: 1876

page_text: LETTERS PATENT to Isaac Blue Harris, of Castle Mills, Fountainbridge,
Edinburgh, for the Invention of "IMPROVEMENTS IN WRINGING ROLLERS FOR
WOOL WASHING AND SIMILAR MACHINES."
Sealed the 1st September 1876, and dated the 20th May 1870.
PROVISIONAL SPECIFICATION left by the said Isaac Blue Harris at the Office
of the Commissioners of Patents on the 20th May 1876.
ISAAC BLUE HARRIS, of Castle Mills, Fountainbridge, Edinburgh. "IMPROVE-
MENTS IN WRINGING ROLLERS FOR WOOL WASHING AND SIMILAR MACHINES.”
These improvements relate to the surfaces of wringing rollers, and consist in
covering the metal rollers as hitherto made with a layer or layers of india-rubber,
and surrounding said layer with another layer or layers of spun yarn made from
wool, cotton, hemp, flax, or such like materials, or with a layer or layers of cloth
made from said inaterials. By thus covering the metal rollers a less expensive
and more efficient wringing surface than the compressed fibrous covers hitherto
in use will be obtained. This covering being more yielding the wringing action
is more perfect, especially with the unavoidable varying feed of wool, esparto grass,
and similar materials. Further, the outside layer of my improved cover possesses
a power of drawing in or feeding the wool or other materials equal to that of the
ordinary compressed fibrous covers without the disadvantage attaching to india-
rubber covers, for the feed of the india-rubber cover is not effective when wet,
especially when wet with an alkaline liquid such as is used in washing wool,
esparto grass, and such like materials. Another advantage consequent on the use
of the outside layer of my improved cover is that the distortion of the underlying
rubber (arising from its backward flow during the rotation of the roller under
pressure) is prevented.
•

page_text: SPECIFICATION in pursuance of the conditions of the Letters Patent filed by
the said Isaac Blue Harris in the Great Seal Patent Office on the 20th
November 1876.
ISAAC BLUE HARRIS, of Castle Mills, Fountainbridge, Edinburgh. " IMPROVE-
MENTS IN WRINGING ROLLERS FOR WOOL WASHING AND SIMILAR MACHINES."
The object of this Invention is to enable wringing rollers covered with a layer or
layers of india-rubber to take better grip than heretofore of the wet and slippery
articles submitted to their action. This I propose to effect by surrounding the
indin-rubber covering with a layer or layers of spun yarn made from wool, cotton,
hemp, flax, or such like materials, or with a layer or layers of cloth made from said
materials.
In the accompanying Drawing I have shown in partial section a metal roller
covered with india-rubber in the usual manner, and overlaid with a cord of fibrous
material according to my Invention. This cord is laid evenly over the roller after
the manner of winding thread upon reels, and tho ends thereof are shewn as secured
in holes made for that purpose in the flanges of the roller. In the same manner,
woven bands or tapes may be laid over woven rollers, and their ends similarly
secured. Two or more layers of the fibrous covering may be applied over the
elastic rubber if thought desirable, but one only is shewn in the Drawing. By
thus covering the metal rollers a less expensive and more efficient wringing surface
than the compressed fibrous cover hitherto in use will be obtained. This compound
covering being more yielding the wringing action is more perfect, especially with
the unavoidable varying feed of wool, esparto grass, and similar materials.
My improved covered roller, while possessing a power of drawing in or feeding
the wool or other materials equal to that of the ordinary compressed fibrous covored
rollers, has the superiority of clasticity without the disadvantage attaching to india-
rubber covered rollers, the feed of which is materially affected when the clastic
surfaces are wet, and especially when wet with an alkaline liquid such as is used
in washing wool, esparto grass, and such like materials. Another advantage con-
sequent on the use of my Invention is that the distortion of the underlying rubber
(arising from its backward flow during the rotation of the roller under pressure)
is prevented by the binding character of the fibrous material composing the outside
layer or layers.
Having now set forth the nature of my Invention of "Improvements in Wringing
Rollers for Wool Washing and similar Machines," 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 application to wringing rollers having an
clastic india-rubber covering of bands or cords of fibrous material in the manner
and for the purpose above described.
In witness whereof, I, the said Isaac Blue Harris, have hereunto set my hand
and seal, the 17th day of November, in the year of our Lord One thousand
I. B. HARRIS. (L.S.)

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