Improvements in Driving Drums or Cylinders for Spinning or Twisting Machinery.
Year: 1886

page_text: Improvements in Driving Drums or Cylinders for Spinning or
Twisting Machinery.
I, ALEXANDER COCHRANE SCOTT, of Ward Road, Dundee, in the County of Forfar,
North Britain, Mill and Factory Furnisher and General Ironmonger, do hereby
declare the nature of this Invention to be as follows, that is to say :-
My said Invention relates to the drums or cylinders which in spinning and twisting
machinery serve for driving the spindles by means of cords or bands. These drums
or cylinders which are generally of considerable length, are commonly made with
their cylindrical shells of plain tinned iron; and being made as light as possible, are
liable to be easily injured and put out of shape.
The object of my Invention is to render the drums less liable to injury; and for
this purpose I make them with the cylindrical shells of corrugated tinned iron or
other suitable. sheet metal. The corrugations may run round the drums or cylinders,
or they may be oblique, but I prefer to have them longitudinal; and they may be of
various sizes or pitches, but I believe that sheet metal having about six complete
corrugations to the inch will be found to answer the purpose satisfactorily. The
edges of the sheets are joined together upon internal metal strips which are by
preference corrugated to fit the corrugations of the external sheets.
EDMUND HUNT,
Applicant's Agent.

page_text: COMPLETE SPECIFICATION.
Improvements in Driving Drums or Cylinders for Spinning or
Twisting Machinery.
I, ALEXANDER COCHRANE SCOTT, of Ward Road, Dundee, in the County of Forfar,
North Britain, Mill and Factory Furnisher, and General Ironmonger, do hereby
declare the nature of this invention and in what manner the same is to be per-
formed, to be particularly described and ascertained in and by the following statement,
that is to say :-
My said Invention relates to the drums or cylinders which in spinning and twisting
machinery, serve for driving the spindles by means of cords or bands.. These drums
or cylinders which are generally of considerable length, are commonly made with
their cylindrical shells of plain tinned iron; and, being made as light as possible, are
liable to be easily injured and put out of shape.
The object of my Invention is to render the drums less liable to injury; and for
this purpose I make them with the cylindrical shells of corrugated tinned iron or steel
or other suitable sheet metal. The corrugations may run round the drums or cylinders,
or they may be oblique, but I prefer to have them longitudinal; and they may be of
various sizes or pitches, but I at present believe that sheet metal having about four
complete corrugations to the inch will generally be found to answer the purpose
most satisfactorily.
And in order that my said Invention and the manner of performing the same may
be properly understood I hereunto append a sheet of explanatory drawings to be
hereinafter referred to and representing a driving drum or cylinder as made according
to my Invention.
Figure, 1, of the drawings is a transverse section of one half of the drum or
cylinder; and figure, 2, is a longitudinal section corresponding to figure,. 1, but
drawn to a smaller scale.
The cylindrical shell, A, made of corrugated sheet metal as hereinbefore described
is fixed upon end disks, B, of which one is shown, such end disks being fixed on the
shaft, C, in the ordinary way, there being one or more intermediate disks fixed on the
shaft and having the shell, A, fixed thereto in the case of drums or cylinders of
considerable length. The complete shell, A, is made up of a number of separate
sheets, and these sheets are joined together at their edges by internal metal bands or
strips, D, of which one is shown in the drawings. The internal joint bands, D, are
by preference corrugated so as to fit the corrugated shell, A; and the parts are
soldered together. Each sheet length of the shell, A, is by preference strengthened
by an annular plate or disk, E, soldered round its flanged edge to the shell, A.

page_text: My improvement not only makes the drums or cylinder stronger and more durable,
but with the corrugated surface will enable them to drive effectively with a moderate
tightness of the bands or cords.
Having now particularly described and ascertained the nature of my said Invention
and in what manner the same is to be performed I declare that what I claim is :-
Making driving drums or cylinders for spinning or twisting machinery with
shells of corrugated sheet metal substantially as and for the purposes herein before
described.
EDMUND HUNT,
Applicant's Agent.