AN IMPROVEMENT IN SPINNING AND TWISTING MACHINERY
Year: 1877

page_text: LETTERS PATENT to Frederic Alexander Greenwood, of Bradford, in the County
of York, for the Invention of "AN IMPROVEMENT IN SPINNING AND TWISTING
MACHINERY'
"
Sealed the 19th March 1878, and dated the 27th December 1877.
PROVISIONAL SPECIFICATION left by the said Frederic Alexander Green-
wood at the Office of the Commissioners of Patents on the 27th December
1877.
FREDERIC ALEXANDER GREENWOOD, of Bradford, in the County of York.
IMPROVEMENT IN SPINNING AND TWISTING MACHINERY."
"AN
My Invention relates to a further improvement in the twister described in the
Specification of Letters Patent granted to Samuel Edward Asquith and myself,
dated August 13th, 1874, No. 2803, and it consists in dispensing with the hinged
tongue therein described as partly forming the small closed eye at the point of the
twister through which the roving is led, and employing in lieu of said tongue a
small overhanging lip or flange, which crosses the large opening left by the omission
of the hinged tongue above mentioned, sufficiently to form a small eye at the point
of the twister, and cause the roving to receive the desired amount of twist by the
rotation of the twister without the disadvantage of having to thread the roving
through the eye every time it breaks.
By my improvement it is only necessary to slip the roving under the lip or
flange in order to replace it in the eye should it break.

page_text: SPECIFICATION in pursuance of the conditions of the Letters Patent filed by
the said Frederic Alexander Greenwood in the Great Seal Patent Office on
the 26th June 1878.
FREDERIC ALEXANDER GREENWOOD, of Bradford, in the County of York.
"AN IMPROVEMENT IN SPINNING AND TWISTING MACHINERY."
My Invention relates to a further improvement in the twister described in the
Specification of Letters Patent granted to Samuel Edward Asquith and myself,
dated August 13th, 1874, No. 2803, and it consists in dispensing with the hinged
tongue therein described as partly forming the small closed eye at the point of the
twister through which the roving is led, and employing in lieu of said tongue a
small overhanging lip which crosses the large opening (left by the omission of the
hinged tongue above mentioned) sufficiently to retain the roving in a sort of open
eye at the point of the twister, and cause the roving to have the desired amount of
twist imparted to it by the rotation of the twister, without the disadvantage of.
having to thread the roving through the eye every time it breaks; it being only
necessary to slip the roving under the lip in order to replace it after it has been
broken.
In order that my Invention may be better understood I have illustrated it in the
accompanying Drawings, in which,―
Figure 1 is a top view; and Figure 2, a side view of the improved twister drawn
to an enlarged scale; Figure 3 is a cross section of the same on line 1-1, Figure 2;
and Figure 4 is a longitudinal section on line 2-2, Figure 2, showing the position
of the roving.
Figures 5 and 6 show a plan and section of a portion of a spinning frame with
the Invention applied.
The improved twister terminates in an open V shaped eye a, as shown, provided
with a lip b fixed to one side only of the V shaped eye a, and crossing the latter
near the point. The rear edge b₁ of this lip is bent upwards, as shown, to facilitate
passing the roving under the said lip, which at the front edge goes straight across
the eye a from one side to the other, the latter side of the eye a being slightly
hollowed or cut away at c to allow the roving to pass under the front edge of the
lip b, and be received in a sort of small open eye d formed at the point of the
twister by hollowing or grooving the front edge of the lip 6 at the under side and
the point of the twister at the upper side, as shown.
In Figures 5 and 6 the twister is shown fixed on the end of the tubular spindle q
mounted in a spinning frame, and rotated as mentioned in the said previous Patent.
g and h are the top and bottom drawing rollers, acted on by the spring-pressed arm
2 instead of by the mere weight of the upper roller, as in the previous Patent, the
said arm being mounted on the upright rod 2' attached to the frame of the
machine.
Having described the nature of my Invention and the manner of performing
the same, I declare that what I claim as my Invention to be protected by the
herein-before in part recited Letters Patent is, the combination with a twister
formed with a large open eye, as herein described, of a fixed lip or its equivalent
crossing the said eye, the lip being so formed that the roving can be slipped there-

page_text: under, and be retained at the point of the twister, and receive the desired twist,
substantially as shown and described.
In witness whereof, I, the said Frederic Alexander Greenwood, have hereunto
set my hand and seal, this Seventeenth day of June, in the year of our
Lord One thousand eight hundred and seventy-eight.
F. A. GREEN WOOD. (LS.)