Improvements in Carding Engines.
Year: 1890

page_text: Date of Application, 14th Jan., 1890
Complete Specification Left, 11.h Oct., 1890-Accepted, 15th Nov. 1890
PROVISIONAL SPECIFICATION.
Improvements in Carding Engines.
I, THOMAS RAWSTHORNE, of 13 Victoria Parade, Ashion, Preston, in the County
of Lancaster, Agent, do hereby declare the nature of this invention to be as
follows:-
This invention consists in placing a revolving roller over and in contact with the
doffer or doffing cylinder of a carding engine for the purpose of providing a con-
tinuous means of removing the dirt from the clothing or surface of such doffer or
doffing cylinder. The periphery of the dirt roller is covered with card clothing and
revolves in the same direction as the doffer the revolving faces of the dirt roller and
the doffer passing each other in opposite directions. The dirt roller may be
stripped" of the dirt it takes up or removes from the doffer by hand or in any
other convenient manner. Although I preferably employ only one dirt roller in
conjunction with the doffer two or more such rollers may if desired be
employed.
66
11-
1043
COMPLETE SPECIFICATION.
Improvements in Carding Engines.
I, THOMAS RAWSTHORNE, of 13, Victoria Parade, Ashton, Preston, in the County
of Lancaster, Agent, 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 :-
This invention consists in placing a revolving roller over and in contact with
the doffer or doffing cylinder of a carding engine for the purpose of providing a
continuous means of removing the dirt from the clothing or surface of such doffer
or doffing cylinder. The periphery of the dirt roller is covered with card clothing
and revolves in the same direction as the doffer the revolving faces of the dirt
roller and the doffer passing each other in opposite directions. The dirt roller may
be "stripped of the dirt it takes up or removes from the doffer by hand or in
any other convenient manner. Although I preferably employ only one dirt roller
in conjunction with the doffer two or more such rollers may if desired be
employed.
"
In the accompanying drawing D represents the doffer or doffing cylinder and C an
adjoining portion of the main cylinder of a carding engine. S is my improved dirt
roller. The dirt roller S may be supported in end bearings on the upper extremities
of arms or brackets fastened to the side framing of the carding machine and may
be driven or rotated by a band cord or belt or by toothed gearing. These
arrangements may be of the ordinary well-known kind employed in conjunction
with the rollers of carding engines and are not therefore illustrated in the
drawings.
In actual use I find that with a doffer having a diameter of twenty-four inches
and rotating at a speed of fourteen revolutions per minute and with a dirt roller of
eight inches diameter the purpose of my invention is most efficiently attained
if the said dirt roller be rotated at a speed of one revolution minute.
per
Although I have described and shewn in the drawing (by means of arrows) the
DC37

page_text: dirt roller S rotating in the same direction as the doffer D (which is the method I
preferably adopt) it will be obvious that if the said roller S were caused to be
rotated in the opposite direction at a very slow speed relatively to the surface speed
of the doffer D it would effect the stripping or removal of the dirt or motes from
the teeth or surface of the card clothing of the doffer D.
The removal of the dirt or motes from (or "stripping") the doffer has heretofore
ordinarily been effected by hand although it has in some cases been effected by means
of apparatus which caused a flat or curved faced "stripper" to come in contact with
the periphery of the doffer at intervals the stripper being caused to be moved away
and to be itself stripped of the impurities it had taken up from the doffer. Such
methods however are obviously of the intermittent type whereas according to my
invention a continuous mode of stripping the doffer is adopted.
Having now particularly described and ascertained the nature of the said inven-
tion and in what manner the same is to be performed I declare that what I
claim is
In conjunction with the doffer or doffing cylinder of a carding engine the application
of a rotating roller such as S arranged substantially as described and shewn in the
drawings for the purpose set forth.
Dated this 11th day of October 1800.
W. LLOYD WISE,
Per. F. J. Brougham,
46, Lincoln's Inn Fields, London, W.C., Agent for the Applicant.