Improvements in the Construction of Metallic Cylinders or Drums for Drying and Polishing Band or Twine and for Drying Woven Fabrics.
Year: 1887

page_text: Date of Application, 20th Sept., 1887
Complete Left, 18th June, 1888
Complete Accepted, 20th July, 1888
PROVISIONAL SPECIFICATION.
Improvements in the Construction of Metallic Cylinders or Drums
for Drying and Polishing Band or Twine and for Drying Woven
Fabrics.
I, WALTER GROOM, of 88 West Street Leeds, in the County of York, Tin and iron
plate worker, do hereby declare the nature of this invention to be as follows:-
This invention has for object improvements in the construction of metallic cylinders
or drums for drying and polishing band or twine and for drying woven fabrics.
According thereto, I make the improved cylinders or drums with a corrugated
surface instead of a smooth surface as has heretofore been usual, the ridges and
grooves of such corrugations being in the circumferential direction, impart greater
rigidity thereto and render such cylinders or drums more capable of resisting a
collapsing strain to which they are sometimes subject.
Such cylinders or drums are heated by steam as usual, the ends being made steam
tight and provided with hollow axles for the admission of steam and the escape of
water arising from the condensation of the steam. In drying woven fabrics moisture
will escape more freely than when cylinders or drums with plain surfaces are used to
which the fabric clings so closely that the moisture can only escape from the outside
of the fabric.
For the latter purpose the corrugations may if preferred have a helical form, one
half or part having a right hand twist and the other half or part a left hand twist."
Dated this 20th day of September 1887.

page_text: Improvements in the Construction of Metallic Cylinders or Drums
for Drying and Polishing Band or Twine and for Drying Woven
Fabrics.
I, WALTER GROOM, of .88 West Street. Leeds, in the County of York, Tin and
Iron-plate worker, 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 has for object, improvements in the construction of metallic cylinders
or drums for drying and polishing band or twine and for drying woven fabrics.
According thereto; I make the improved cylinders or drums with a corrugated
surface instead of a smooth surface as has heretofore been usual, the ridges - and
grooves of such corrugations being in the circumferential direction impart greater
strength and rigidity thereto and render such cylinders or drums more capable of
resisting a collapsing strain to which they are sometimes subject.
Such cylinders or drums are heated by steam in the usual manner, the ends being
made steam tight at their junction with the shell, and provided with hollow axles or
journals for the admission of steam and for the escape of water resulting from tho
condensation of the steam.
For drying and polishing band or twine I construct the cylinders with the corru-
gations at right angles to the axis thereof, each groove being complete in itself or
separate from other grooves in order that band or twine when once placed upon the
cylinder may continue in the same groove.
In drying woven fabrics moisture will escape more freely than when the cylinders
or drums are made with plain surfaces, to which the fabric clings so closely that the
moisture can only escape from the outside of the fabric, whilst with the improved
cylinders with the corrugated surfaces it will be obvious that moisture can escape
from both sides at the same time, hence greater rapidity in drying is secured. For
the last mentioned purpose the corrugations may, by preference, have a helical form,
one half or part having a right hand twist, and the other half or part a left-hand
twist; this form of cylinder when rotated in the proper direction will extend the
fabric laterally as it passes over it, and tend to remove creases therefrom. In some
cases 1 make the helix or convolutions continuous from end to end of the cylinder and
of any suitable pitch..
In the annexed drawings, Fig. 1. Sheet 1. is a longitudinal section of a drying
cylinder according to my invention, suitable for drying and polishing band or twine.
Fig. 2, Sheet 2, shows in outside view a cylinder having right and left hand helical
corrugations suitable for drying woven fabrics. Fig. 3, Sheet 3, shows a cylinder
with the corrugations forming a single helix or screw, having the same pitch as that
of the said corrugations, and Fig. 4, shows a cylinder in which the corrugations may
be of any indefinite pitch.

page_text: Similar letters of reference are applicable to all the Figures.-a, is the cylindrical
shell (shewn partly in section at a 1.) of corrugated sheet or plate metal, which is
joined by soldering or rivetting, or both, or in any equivalent and steam tight manner
to end discs b, provided with journals b 1. on which rotation takes place. These
journals are pierced at c for the admission of steam or other medium for heating
the cylinder. In cases where the cylinders are very long, intermediate discs or
strengthening rings may be fixed inside for imparting the necessary rigidity
thereto.
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
Making Cylinders or drums for drying and polishing band or twine, and for drying
woven fabrics, with shells of corrugated metal, substantially as hereinabove described
and shewn in the annexed drawings.
Dated this 16th day of June 1888.
Witness,
THOS. E. CRAVEN, C.E., Fel. Inst. P.A.,
24, Victoria Chambers, Leeds.
WALTER GROOM.