Improvements applicable to Rotatory Shuttle Boxes of Looms.
Year: 1894

page_text: Date of Application, 8th Sept., 1894
Complete Specification Left, 18th Oct., 1894-Accepted, 24th Nov., 1894
PROVISIONAL SPECIFICATION.
Improvements applicable to Rotatory Shuttle Boxes of Looms.
I, DAVID ANDERSON, of Atlantic Mills, Walkinshaw Street, in the County of
the City of Glasgow, North Britain, Manufacturer, do hereby declare the nature
of this invention to be as follows, that is to say :-
My said invention has for its object to secure increased accuracy and steadiness
of position of rotatory shuttle boxes of looms, and in carrying it out I provide two
stop levers which after each shift or part rotation of the shuttle box, bear against
pins on the end disk of the box so as to hold the box rigidly and accurately in
position. The stop levers are centered on a frame piece moving with the lathe,
and act on pins on opposite sides of the bottom of the box disk, one preventing
rotation in one direction and the other preventing rotation in the opposite direction.
The upper acting parts of the stop levers are connected by a spring which draws
them towards each other and clear of the pins when a shift of the shuttle box is
taking place. The lower ends of the stop levers extend below the frame piece on
which the levers are centered, and are curved, they are acted on by pins on a
vertically sliding piece which is pressed upwards by a spring. The shuttle box is
shifted or turned by hooked rods acted on, and acting, in a well known way. The
hooked rods are formed with or have fixed to them projections which when the
rods are moved downwards to turn the box-act on the vertically sliding piece and
depress it. This action allows the stop levers to move out of the way of the
pins of the box disk; and when the shift has been completed and the hooked rods
moved up again the spring acting on the sliding piece forces it up and it moves the
stop levers into their steadying positions.
Dated this Seventh day of September 1894.
EDMUND HUNT,
Applicant's Agent.
COMPLETE SPECIFICATION.
Improvements applicable to Rotatory Shuttle Boxes of Looms.
be
I, DAVID ANDERSON, of Atlantic Mills, Walkinshaw Street, in the County of
the City of Glasgow, North Britain, Manufacturer, do hereby declare the nature
of this invention and in what manner the same is to be performed, to
particularly described and ascertained in and by the following statement, that is to
say:-
My said invention has for its object to secure increased accuracy and steadiness
of position of rotatory shuttle boxes of looms; and in carrying it out I provide two
stop levers which on the completion of each shift or part rotation of the shuttle
box, temporarily bear against pins on the end disk of the box so as to bring the
box rigidly and accurately to rest.
The mechanism for effecting the objects indicated is shown on an accompanying
sheet of explanatory drawings together with some well known parts of rotatory
shuttle box apparatus, Figures, 1, and, 2, of the drawings being respectively a
front and an end elevation the latter partly in section. In these drawings the
same reference letters and numerals are used to mark the same or like parts
wherever they are repeated.

page_text: The rotatory shuttle box, A, is fixed on a spindle, A 1, which extends through
bearings in a bracket, B, fixed upon the lathe framing, B1, B2, B3. The shuttle
box, A, is turned or shifted in a usual manner by the action of hooked rods,
C1, C2, on pins, D, fixed in a pair of disks, D 1, fast on the spindle, A 1. Two
stop levers, E1, E2, are centered on a frame piece, B4, moving with the lathe,
and act on two of the pins, D, situated one on each side of the bottom pin, and
when in their stopping positions, preventing rotation of the shuttle box, one in one
direction and the other in the opposite direction. The upper acting parts of the
stop leyers, E1, E2, are connected by a spring, E, which tends to draw them
towards each other when a shift of the shuttle box is taking place. The lower
ends of the stop levers, E1, E2, extend below the frame piece, B4, and are
curved; they are acted on by pins, G, on a vertically sliding piece, G 1, guided in
the frame piece, B4, and in a bottom bracket, B 5. The piece, G 1, is made with
a rod-like lower part which has on it a helical spring, G 2, arranged to press the
piece upwards. The hooked rods, C1, C2, have fixed to them projections, C3, C4,
arranged so as when descending, to encounter a cross bar, G3, formed or fixed on
the vertically sliding piece, G1; and when either hooked bar, C 1, or C 2, is
(by the action of pattern mechanism not shown) drawn down its hook first engages
with a pin, D, of the shuttle box, and immediately afterwards its projection,
C3, or C4, depresses the vertically sliding piece, G 1. When as shown in the
drawing the hooked rods, C1, C2, are in their highest positions, the eliding
piece, & 1, has also been raised into its highest position by its spring, G 2, and its
pins, G, acting on the curved lower ends of the stop levers, E1, E2, have brought
those lower ends together. In this position of the stop levers, E1, E2, their
upper ends are just clear of the pins, D, of the shuttle box which is thus free to be
turned by either hooked rod, C 1, or, C2, or if at any time required the attendant
worker can turn or adjust the box without having to use more than one hand.
Either hooked rod, C 1, or, C 2, in descending, and immediately after beginning
to turn the shuttle box, and when the pins, D, nearest the stop levers, E1, E2,
have just moved sufficiently not to be caught by the stop levers, acts on the cross
bar, G 3, and depresses the piece, G 1, lowering the pins, G, and allowing the
lower ends of the stop levers, E 1, E 2, to turn outwards and their outer ends to
turn inwards by the action of their spring, E. The stop levers, E 1, E 2, then,
as the shift is being completed, get under the pins, D, which are brought into the
positions to engage with the stop levers. Spurs, E 3, are formed on the stop
levers, E1, E2, so as by encountering the frame piece, B4, to prevent either lever
from being turned inwards too far. When a hooked rod, C 1, or C 2, which
has just acted, reascends, the parts (excepting the shuttle box) return to their
former positions in which they are shown in the drawing.
Having now particularly described and ascertained the nature of my said
invention and in what manner the same is to be performed, I declare that what I
claim is :-
The application to rotatory shuttle boxes of looms, of improved mechanism for
stopping the rotation of the box when it is shifted, such mechanism being con-
structed, arranged and operating substantially as herein before described.
Dated this Sixteenth day of October 1894.
EDMUND HUNT,
Applicant's Agent.