IMPROVEMENTS IN POWER LOOMS
Year: 1866

page_text: PROVISIONAL SPECIFICATION left by Alfred Vincent Newton at the
Office of the Commissioners of Patents, with his Petition, on the 16th
April 1866.-A communication from abroad by Philo Ward Hart, of
Stamford, and Daniel Clark Tibbals, of Windham Centre, both in the
State of New York, United States of America.
I, ALFRED VINCENT NEWTON, of the Office for Patents, 66, Chancery Lane,.
in the County of Middlesex, Mechanical Draughtsman, do hereby declare
the nature of the said Invention for "IMPROVEMENTS IN POWER LOOMS," to be
as. follows:-
This Invention relates to the application to looms of certain mechanism
whereby when the yarn of the shuttle breaks or gives out while the loom is in
operation the shuttle will be ejected from the shuttle box at one side of the
loom, and its place supplied by another shuttle containing a proper supply of
thread without the necessity for stopping the loom. The shuttle box on one
end of the lay of the loom is made with an open bottom and fitted with a.trap
formed of automatic sliding plates, which trap in case of the shuttle yarn
giving out or being broken is opened as the lay strikes up by the action of a
device somewhat similar to the fork and grid of the ordinary "filling stop
motion," or of other suitable character, and the shuttle then. either drops out
or is pushed through the bottom of the box by means of fingers attached to
the shuttle box or lay, and which are caused to operate by a portion of the
same mechanism which opens the bottom of the shuttle box.. At the opposite
side of the loom there is attached to the breast beam or other fixed part of

page_text: the loom a shuttle box, which may be termed the " spare shuttle box," also
having an open bottom and a movable trap, and in which is placed a spare
shuttle. This shuttle at the same time that the shuttle which has been in
operation is ejected, or before the lay moves back again after such ejection, is
delivered through the open bottom of the said spare shuttle box into the
shuttle box on the corresponding end of the lay by the opening of the trap at
the bottom of the said spare shuttle box and the action of suitable fingers;
the opening of the trap at the bottom of the spare shuttle box and the opera-
tion of its ejecting fingers being produced by the same mechanism as, or
mechanism substantially similar to that which produces the opening of the trap
in the bottom of the shuttle box on the other end of the lay, and the ejection of
the shuttle therefrom. The sliding plates which form the trap of the first-named
shuttle box are connected to a transverse plate, which when set in action gives
these plates both a longitudinal and a lateral motion simultaneously. The
pushing back of the transverse plates to open the trap of the shuttle box and
bring the depressing fingers into operation to eject the shuttle, when its yarn
has given out or broken, may be effected in various ways; but it is proposed
generally to effect it by a modified arrangement of the fork and grid of the
ordinary filling stop motion, the grid being arranged in the usual position on
the lay of the loom, and the said fork being secured to a rock shaft attached
to and parallel with the back of the breast beam. This rock shaft is fur-
nished with a bent arm, which until the shuttle yarn has given out or been
broken is held up out of the way of the forward end of the transverse
plate by the pressure of the yarn against the fork, but when the yarn is
broken or given out the bent arm drops in front of the transverse plate, so
that when the lay beats up the plate comes in contact with the bent arm, and
is thereby pressed back relatively to the lay, and caused to open the trap and
operate the fingers, and thereby eject the shuttle from the shuttle box into
which it had just entered. The ejected shuttle drops from the lay on to a
shelf attached to the framing of the loom in a suitable position.
A somewhat similar arrangement serves to transfer the shuttle of the spare
shuttle box to the shuttle box of the lay when it is brought below it, the
opening of the trap being in this case also effected by the operation of a bent
finger carried by the same rock shaft.