Improvements in connection with Quadrants for Spinning and Twisting Frames for Flax or other Fibrous Materials.
Year: 1889

page_text: Date of Application, 14th Dec., 1889
Complete Specification Left, 7th Feb., 1890-Accepted, 8th Mar., 1890
PROVISIONAL SPECIFICATION.
Improvements in connection with Quadrants for Spinning and
Twisting Frames for Flax or other Fibrous Materials.
I THOMAS WATSON of Milfort Mill, Belfast Engineer do hereby declare the nature
of my said Invention to be as follows:-
The quadrants at present in use on spinning and twisting frames do not reverse
the upward or downward motion of the "builders" so quickly at the turning points as
to prevent considerable waste owing to too much yarn or thread getting wound at
the tops and bottoms of the " Cops "Pins" or "Bobbins." The object of my
invention is to obviate this waste.
و,
My improvements consist in arrangements whereby the quadrants cause the rise or
fall of the "builders" when nearly at the extremes of the traverses to be accellerated
and also that the change from the upward motion to the downward motion or vice versa
is instantaneous, thus putting on less yarn or thread at the ends of the " Cops
"Pins" or "Threads and saving the great waste that is unavoidable with the
quadrants commonly used.
Dated this 14th day of December 1889
"
J. H. JOHNSON & Co.,
47, Lincoln's Inn Fields, London, W.C., Agents.
COMPLETE SPECIFICATION.
Improvements in connection with Quadrants for Spinning and
Twisting Frames for Flax or other Fibrous Materials.
I, THOMAS WATSON of Milfort Mill Belfast Engineer 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 :-
My Invention has for its object provide in connection with Quadrants used in
spinning and twisting frames for flax and other fibrous materials means whereby an
instantaneous reversal of the upward and downward motions of the "Builders" is
obtained and also whereby the Builders towards the ends of their upward and
downward motions as well as at the extreme ends of same, have their motions
accelerated so that less yarn or thread will be built on at the extreme ends of the
Bobbins cops or pirns, than in the centre, and by the accelerated motions the yarn or
thread will be crossed or bound at the ends of the Bobbin's cops or pirns thereby
saving the great waste incidental to the ordinary arrangement.
According to my Invention, I attach to the Quadrant a bifurcated lever the
bifurcations of which are acted upon by a roller collar or Boss placed preferably at
the back of the Quadrant pinion. When this roller collar or Boss comes into contact
with either of the bifurcations of the lever the bifurcated end is pushed back and this
movement being conveyed to the other end of the lever (to which the Builder chains
are attached) an accelerating motion in same direction is imparted to the Builders,
while the quadrant pinion is travelling from the top to the bottom side of the rack of
the quadrant and vice versa.
I also provide locking levers which are so arranged that the roller collar or Boss
first acts on one or the other of them and releases the aforesaid lever from the
Quadrant, thus permitting the arm of the lever to be pushed back as described, the
locking lever at the opposite end is by the same motion drawn forward until the notch
upon it engages a suitable stud attached to the Quadrant when the Quadrant and lever
are again interlocked and act in concert. The same action is repeated at each of the
ends of the Quadrant.

page_text: And in order that my said Invention may be fully understood I will now describe
the manner in which it may be carried into effect and for that purpose shall refer to
the accompanying drawings, the same letters, of reference indicating the same parts in
the several Figures.
Figures 1, 2 and 3 represent in front elevation sectional elevation and plan
respectively a portion of a spinning frame sufficient to illustrate my Invention as
applied thereto.
Qis the Quadrant capable of turning freely on the stud D or fixed centre of motion
at the side of the frame. This Quadrant receives an intermittent vibratory motion
from the Quadrant pinion A' which rotates always in the same direction and which
has given to it at certain parts of the motion a vertical motion of translation. Free to
rotate on the same axis or arbor a as that to which the pinion A¹ is keyed but not to
move longitudinally thereon is a roller R made of steel or other suitable material, J is
a lever having one end double or bifurcated and the other arm straight the said lever
being capable of turning freely on a stud or pin P fixed to the quadrant Qand
therefore moving with it. The arms J2 of the bifurcated end of the lever J have a
cam plate C made of steel or other suitable material attached to each of them by
means of set studs by which they can each be adjusted in the slot Z in the said
arms to suit the different motions desired to be imparted to them by the collar R.
The straight or lower arm of the lever J has a slot j in it in which a stud T is
capable of being moved throughout the entire length of the slot ; and fixed in
position in order to admit the different amounts of acceleration and traverse it is
desired to give to the "Builders." This stud T engages in the nut X which is
capable of moving freely in a longitudinal groove X³ formed in one arm of a
lever O. capable of rotating about the Boss B fixed on the same axis as that on
which the quadrant Q is mounted. The other or lower end of the lever O has in
it two slots 0 to which the builder chains are attached (as shewn in Figure 1)
and by which the motion of the said lever is communicated to the Builder
shafts V..
Locking levers L and L' made of wrought iron or other suitable material turn
upon studs M M' and are for the purpose of locking the lever J to the quadrant Q
and at the proper times releasing it from the said quadrant so that the lever J and
quadrant Qact either together or independently at the required times. The
levers L and L' as they are severally brought into contact with the roller R have
their one end moved back which lifts the other end up and frees the notch a
thereof from the stud (S or S¹) so that the said lever J is thus freed from the
Quadrant Q and the roller R acts upon the cam C and by the movement of the
one arin J2 of the lever J after the unlocking of the lever L for example the other
arm is brought forward and brings with it the lever L¹ until the notch a therein
engages with the stud S¹ when the lever J and the quadrant Q are interlocked and
act in concert. This unlocking and locking takes place successively as the roller R
arrives at each end of the quadrant rack.
For the two studs S and S¹ which engage the notches in the levers L and L'
one stud may be substituted for engaging with the notches of both levers.
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
claim is :-
First. In combination with Quadrants of spinning and twisting frames means
whereby a quick reversal of the motions of the builders is obtained and whereby
the motion of the builders is accelerated at or towards the end of their upward
and downward motions substantially as and for the purpose hereinbefore described.
Second. In combination with quadrants of spinning and twisting frames the
Roller collar or boss R on the quadrant pinion shaft and the levers J and O with
their adjustable connection by which the acceleration and traverse of the builders
can be varied substantially as hereinbefore described and illustrated.
Third. In combination with the lever J arranged and operated substantially as

page_text: described the cams C connected to the double arms or bifurcations of the said
lever so that the said cams are adjustable thereon for the purpose described.
Fourth. In combination with the lever J and the Quadrant the levers L and L'
arranged to engage and disengage the said lever J and quadrant substantially as
herein before described and illustrated.
Fifth. In combination with the lever J having centred thereto the levers L L'
with notches and slots therein and the quadrant Q with studs S S¹ (or one such
stud) for engaging the said notches and slots substantially as and for the purpose
herein before described and illustrated.
Sixth. The general arrangement and combination of parts as hereinbefore described
and illustrated in the accompanying drawings for the purposes described.
Dated the 7th day of Fabr 1900
J. H. JOHNSON & Co.,
Agents.