IMPROVEMENTS IN TWISTING MACHINERY KNOWN AS 'TRAP TWISTERS."
Year: 1874

page_text: LETTERS PATENT to Jesse Lumb, of Folly Hall Mills, Huddersfield,
in the County of York, Worsted Spinner, for the Invention of
"IMPROVEMENTS IN TWISTING MACHINERY KNOWN AS 'TRAP TWISTERS.""
Sealed the 16th October 1874, and dated the 16th April 1874.
PROVISIONAL SPECIFICATION left by the said Jesse Lumb at tho
Office of the Commissioners of Patents, with his Petition, on the
16th April 1874.
I, JESSE LUMB, of Folly Hall Mills, Huddersfield, in the County of
5 York, Worsted Spinner, do hereby declare the nature of the said Inven-
tion for "IMPROVEMENTS IN TWISTING MACHINERY KNOWN AS ' TRAP TWISTERS,'"
to be as follows:-
This Invention relates to that class of machinery known as "trap
twisters." Heretofore the rollers of such machines have had rotation
(communicated to them by means of driving bands and pullies or
wharles. In practice it is found that the bands become slack and slip
over the pullies, and so only cause an intermittent rotation of the rollers.
The result is that the yarn is not delivered by these rollers as fast as it

page_text: should be, and consequently more twist is imparted to some portions of
the yarn than is required, thus producing what is known as "hard
ends." To remedy this I mount the rollers on spindles to which rotation is
communicated by bevil gearing or other means from producing a positive
motion.
Each spindle has a flange upon which the roller rests, between which
and the flange may be placed a washer of leather or other substance, the
object being to drive or impart rotation to the roller by friction.
The guide eyes are fixed on levers hinged at or about the centre in
such manner that when an "end" breaks, one end of the lever will fall I
and come in contact with one of a series of projections on the bottom of
the roller and so stop the rotation thereof.
1
SPECIFICATION in pursuance of the conditions of the Letters Patent,
filed by the said Jesse Lumb in the Great Seal Patent Office on
the 16th October 1874.
TO ALL TO WHOM THESE PRESENTS SHALL COME, I, JESSE
LUMB, of Folly Hall Mills, Huddersfield, in the County of York,
Worsted Spinner, send greeting.
WHEREAS Her most Excellent Majesty Queen Victoria, by Her
Letters Patent, bearing date the Sixteenth day of April, in the
year of our Lord One thousand eight hundred and seventy-four, in
the thirty-seventh year of Her reign, did, for Herself, Her heirs
and successors, give and grant unto me, the said Jesse Lumb,
Her special licence that I, the said Jesse Lumb, my executors,
administrators, and assigns, or such others as I, the said Jesse
Lumb, my executors, administrators, and assigns, should at any
time agree with, and no others, from time to time and at all times
thereafter during the term therein expressed, should and lawfully
might make, use, exercise; and vend, within the United Kingdom
of Great Britain and Ireland, the Channel Islands, and Isle of Man,
an Invention for "IMPROVEMENTS IN TWISTING MACHINERY KNOWN AS TRAP
TWISTERS," upon the condition (amongst others) that I, the said Jesse
Lumb, my executors or. administrators, by an instrument in writing
A

page_text: under my, or their, or one of their hands and seals, should particularly
describe and ascertain the nature of the said Invention, and in what
manner the same was to be performed, and cause the same to be filed
in the Great Seal Patent Office within six calendar months next and
immediately after the date of the said Letters Patent.
NOW KNOW YE, that I, the said Jesse Lumb, do hereby declare
the nature of my said Invention, and in what manner the same is
to be performed, to be particularly described and ascertained in and
by the following statement and accompanying Sheet of Drawings:-
66
This Invention relates to that class of machinery known as trap
twisters." Heretofore the rollers of such machines have had rotation
communicated to them by means of driving bands and pullies or
wharles. In practice it is found that the bands become slack and slip
over the pullies, and so only cause an intermittent rotation of the rollers.
The result is that the yarn is not delivered by these rollers as fast as it
should be, and consequently more twist is imparted to some portions
of the yarn than is required, thus producing what are known as "hard
ends." To remedy this I mount the rollers on spindles to which rotation
is communicated by bevil gearing or other means of producing a positive
motion.
Each spindle has a flange upon which the roller rests, between which
and the flange may be placed a washer of leather or other substance, the
object being to drive or impart rotation to the roller by friction.
The guide eyes are fixed on levers hinged at or about the centre in
such manner that when an "end" breaks, one end of the lever will fall
and come in contact with one of a series of projections on the bottom
of the roller and so stop the rotation thereof.
In order that this Invention may be more fully understood I have
hereunto annexed a Sheet of Drawings of such parts of a
"trap
twisting machine as are necessary to illustrate my Invention. Fig. 1
is a front view, Fig. 2 a sectional end elevation of the same; Figs. 3
and 4 are details.
A are the rollers, which are mounted on spindles B supported in rails
C and D. Rotation is communicated to the spindles by bevil wheels E,
gearing with similar wheels F fixed on the shaft G extending from end
to end of the machine and driven from any convenient source. The

page_text: rotation thus imparted to the spindles is communicated to the rollers by
the frictional contact between the flange H and the roller, which may
be increased by placing a washer J of leather or other adhesive material
.between them. The guide eyes are attached to levers K hinged at L in
such manner that the end. K' is heavier than the opposite end, the
difference between the two being counterbalanced by the tension of the
thread M, which is sufficient to keep the lever in or about the horizontal
"end" break,
position shewn in the Drawing; but should the thread or
the end K' will fall and prevent the roller from turning further round by
reason of one of the projections N on the bottom of the roller coming in
contact with it. By this arrangement of apparatus "hard ends " are
avoided, the yarn being fed or supplied in a regular and continuous
manner by the rollers, and no "waste" is made because each individual
roller ceases to supply yarn when the thread or "end" breaks.
Having thus described the nature of this my said Invention, and
shown by Drawings how the same is to be performed or carried into
practical operation, I would have it understood that I claim, the use or
employment of bevil wheels or equivalent mechanical means for impart-
ing a positive rotary motion to the spindles B, such rotary motion being
communicated to the rollers A by frictional contact, substantially as
shewn and described.
In witness whereof, I, the said Jesse Lumb, have hereunto set
my hand and seal, this Fourteenth day of October, in the
year of our Lord One thousand eight hundred and seventy-
four.
Witness,
W*. TASKER,
Patent Agent,
Halifax & Bradford.
JESSE LUMB. (L.S.)