IMPROVEMENTS IN AND RELATING TO MACHINERY FOR DRESSING FLOUR AND OTHER SUBSTANCES."
Year: 1878

page_text: LETTERS PATENT to Cecil Lindsay Wray, of Liverpool, in the County of Lan-
caster, for the Invention of "IMPROVEMENTS IN AND RELATING TO MACHINERY
FOR DRESSING FLOUR AND OTHER SUBSTANCES."
PROVISIONAL SPECIFICATION left by the said Cecil Lindsay Wray at the
Office of the Commissioners of Patents on the 16th July 1878.
CECIL LINDSAY WRAY, of Liverpool, in the County of Lancaster. "IMPROVE
MENTS IN AND RELATING TO MACHINERY FOR DRESSING FLOUR AND OTHER
SUBSTANCES."
In silk dressing machines the lacing of the silk round the drum has been always
a troublesome business. Now my Invention is designed to obviate this difficulty
and to improve the working by making it more regular. It consists:-1st. in
sewing the silk into the cylindrical or conical shape required, and then placing in it
a spiral spring of aproximately the same shape as the silk sieve to be formed. The
whole is then placed in a skeleton drum to fit it, thus preventing sagging. The
spiral spring also acts as a guide to gradually and evenly bring the flour on from
one end of the silk to the other.
In order to give the silk more the motion of sieving I sometimes place the
bearings a little out of the centre line, so that the whole drum or cone as it revolves
has an eccentric motion.

page_text: SPECIFICATION in pursuance of the conditions of the Letters Patent filed by
the said Cecil Lindsay Wray in the Great Seal Patent Office on the 15th
January 1879.
CECIL LINDSAY WRAY, of Liverpool, in the County of Lancaster.
"IMPROVE-
MENTS IN AND RELATING TO MACHINERY FOR DRESSING FLOUR AND OTHER
SUBSTANCES."
In silk dressing machines the lacing of the silk round the drum has been always
a troublesome business. Now my Invention is designed to obviate this difficulty
and to improve the working by making it more regular. It consists in sewing the
silk into the cylindrical or conical shape required for the sieve, and then placing in
it a spiral spring or coil of approximately the same dimensions and of circular,
polygonal, or other suitable cross section. The whole is then placed in a skeleton
drum to fit it, thus preventing sagging. The spiral spring or coil also acts as a
guide to gradually and evenly bring the flour on from one end of the silk to the
other.
In order to give the silk more the motion of sieving I sometimes place the
bearings a little out of the centre line, so that the whole drum or cone as it revolves
has an excentric motion.
In the Drawings,-
Fig. 1 shows a section of silk drum and silk.
Figs. 2, 3, and 4, three forms of coil used by me, though of course I do not bind
myself to these exact shapes only.
In the sectional elevation Fig. 1 A is the spring or coil; B, silk cover; C, exterior
supporting frame; D, ends; E, bearing. The excentricity of the bearings.or axis of
the machine is not shown, as it is not a necessary though useful part of the Inven-
tion, and may frequently be dispensed with.
Having now described my Invention and the best mode known to me of carrying
it into effect, I wish it to be understood that what I specially claim as my Invention,
to be protected under the herein-before in part recited Letters Patent is,―
First. The manufacture of silk dressing machines and similar machinery for
dressing flour or other substances, by sewing the cover first and then passing it over
a spiral body frame, to which it is attached.
Second. The combination of the spiral or coiled frame A of cylindrical, conical,
polygonal, or other shape, as required; the silk or other covering material B; the
bearing E, concentric or preferably excentric, with the axis or centre line of drum;
and the outer or exterior frame C.
Third. The dressing apparatus, substantially as herein described.
In witness whereof, I, the said Cecil Lindsay Wray, have hereunto set my
hand and seal, this Thirteenth day of December, in the year of our Lord One
thousand eight hundred and seventy-eight.
Witness,
W. P. THOMPSON,
Patent Agent,
of the Firm of Wm. P. Thompson & Co.,
6, Lord Street,
Liverpool,
& 323, Holborn,
London.
CECIL L WRAY. (L.S.)