IMPROVEMENTS IN MACHINERY EMPLOYED IN SPINNING AND DOUBLING WOOL AND OTHER FIBROUS SUBSTANCES
Year: 1875

page_text: PROVISIONAL SPECIFICATION left by Thomas Bailey at the Office of
the Commissioners of Patents, with his Petition, on the 6th April
1875.
I, THOMAS BAILEY, of Bradford, in the County of York, Wool Stapler,
do hereby declare the nature of the said Invention for "IMPROVEMENTS IN
MACHINERY EMPLOYED IN SPINNING AND DOUBLING WOOL AND OTHER FIBROUS
SUBSTANCES," to be as follows.-
"
-
The first part of my Invention relates to what is generally known as
'doffing," that is, removing full bobbins from and placing empty
bobbins on the spindles, and is applicable either to throstle (or fly)
frames or cap frames, whether employed in spinning or doubling. I
effect this object as follows, the description relating only to one side of a
frame, similar apparatus being employed for both sides -On the lower
part of each spindle is fixed a toothed pinion, and when the flyers aro
required to be unscrewed from the spindles a toothed rack is moved (by
means of a pulley and chain or other contrivance) longitudinally of the
frame, which as it is moved comes in contact with and drives the pinions,
and thus effects the object required. Next at each end of the frame I
have a groove or race, un cach groove or race is a rod which can be

page_text: moved in a perpendicular direction, either up or down, by means of
chains attached to pullies fixed to a shaft placed in a suitable position.
To the upper part of cach rod is fixed a horizontal bearer which supports
a rail I name No. 1, which supports another rail I name No. 2 These
rails can be moved in a direction to or from the spindles by screws
connected with the horizontal bearers or other suitable means; rail
No. 1 is provided with hooks or other contrivances for removing the
flyers from the spindles; rail No. 2 is provided with pins or other
contrivances for removing the full bobbins from the spindles. I have
also other two rails, which I name Nos. 3 and 4, supported at each end
by bearers fixed to the lower part of the rods; rail No. 3 is made
suitable for receiving the full bobbins after they are removed from the
spindles; rail No. 4 holds -the-empty bobbins until they are placed on
the spindles. All these rails are in front of the spindles, and when the
frame is running are out of the way of the working parts of the
machinery, but when the frame is ready to be "doffed" the rods and
rails are simultaneously raised, so that the horizontal bearers are nearly
as high as the top of the spindles. Rails Nos. 1 and 2 are now moved
towards the spindles, so that the hooks go under the top part of the
flyers, and the pins tako hold of the full bobbins; the guide board is
then removed from over the spindles by either the present or other
method and under the guide board. Supported by suitable means is a
thin rail, cord, tape, or other contrivance, which I now bring forward to
support and keep the threads at a proper tension; the rods and rails aro
again raised a little higher, so that the top part of the flyers are enclosed
between the hooks and rail No. 1; the flyers are then unscrewed by the
method before named; the rods and the whole of the rails are again
raised, and the flyers and full bobbins simultaneously removed from the
spindles; the rails No. 1 and 2 are then moved a little outwards from
the spindles, and the full bobbins simultaneously deposited on rail No. 3;
rails No. 1 and 2 are then moved inwards, and the empty bobbins
deposited on the spindles from rail No. 4. The whole of the rods and
rails are then lowered, placing the flyers on the spindles, and the flyers
are screwed on again by the reverse motion of the rack and pinions, or
may be done by means of the cylinder; the rail under the guide board
and the guide board are then put back to their original position, and the
rails Nos. 1 and 2 moved outwards from the spindles so as to allow
threads from the full bobbins to be wound round the empty bobbins,
which may be effected by turning the cylinder in its proper direction.