Improvements in Change Box and Picking Mechanism of Looms for Weaving.
Year: 1888

page_text: 1
Date of Application, 31st Dec., 1888
Specification Accepted, 12th Feb.. 1889
COMPLETE SPECIFICATION.
Improvements in Change Box and Picking Mechanism of Looms for
Weaving.
1. BENJAMIN JOSEPH BARNARD MILLS of 23 Southampton Buildings, in the
County of Middlesex, Patent Agent, do hereby declare the nature of this invention,
a communication to me from abroad by Henry Berger of 2 Place Croix-Paquet,
Lyons, in the Republic of France, Silk Manufacturer, and in what manner the same
is to be performed, to be particularly described and ascertained in and by the following
statement, reference being had to the accompanying drawing and to the figures and
letters marked thereon:-
The invention relates to looms for weaving in which several shuttles are contained
in moveable boxes at the two extremities of the batten.
It consists in a new method of effecting, at the required times, the shifting of these
shuttle boxes by means of Jacquard mechanism.
The accompanying drawing represents these improvements applied to a power loom,
the batten of which is suspended, from above, but they are also applicable to other
classes of looms.
Figure 1 is a front view of parts of a loom. Figure 2 is a sectional end view of
parts. Figure represents, to a larger scale, one end of the batten containing its
shuttle box and seen from the back. Figure 4 is a section on the line 1. 2. of
figure 3.
The shuttle boxes A, A, slide vertically at each end of the batten B. They are
formed with as many compartments, placed one above the other, as there are shuttles
employed. In the example given, 8 shuttles are used.
The two shuttle boxes move together, so that the shuttle leaving one compartment
shall always arrive in the like compartment of the other box.
The shuttle picking apparatus acts on both sides simultaneously at each motion of
the batten, thereby enabling the shuttle to be arrested either at the right or the left,
and thus to obtain combinations of weft at even or uneven intervals.
The following is a description of the method of shifting the shuttle boxes.
A transverse shaft G is connected to the book I of the Jacquard by a lever H.
The same shaft carries, at its extremities, two other lovers F, from which the shuttle
It follows that each time the hook is
boxes are suspended by rods or links E.
raised by the griff of the Jacquard, the shuttle boxes are raised to the top of their
travel, then allowed to fall on to studs or stops L. M. shown at Figures 3 and 4.

page_text: These studs or stops are carried by crank lovers 0. 0. P. P, which are operated, at
the desired times, by the hooks R. R', of the Jacquard, which act for this
purpose on two transverse shafts S. S₁ connected to the crank levers by links or
rods T. T¹.
Thus, by placing the hooks R., R¹ in position to be raised by the griff of the
Jacquard, the studs or stops L or M can be withdrawn, at the desired time, from
the path of the shuttle boxes.
If all the studs or stops are thus withdrawn, the two boxes will fall to the bottom
of their course and will rest on the bar Q of the batten; it is then the upper shuttle
which will work.
If the upper studs or stops L are alone withdrawn, the shuttle boxes will fall on
to the lower studs or stops M and rest in the intermediate position, when the central
shuttle will work.
If the studs or stops rest all in their places, the shuttle boxes will fall on to the
upper studs or stops L, when the lower shuttle will work.
The shuttle boxes are therefore each time brought to a fixed position by resting
upon the studs or stops, or upon the bottom of their slide. Each time that they are
required to descend, they do so to the extent determined by the withdrawal of the
studs or stops Lor M operated by the hooks R. R of the Jacquard.
When they
are required to rise, they are clevated at a single motion to the top of their course by
means of the hook 1, and fall either on to the studs or stops I, or on to the studs
or stops M, as may be required.
In this manner. the hooks operated by the Jacquard have only to travel exactly
similar distances, and the shuttles, when they are picked, are always at their exact
position.
As
The shuttles are picked by the picking sticks Z. Z, jointed to the batten, and operated
by the cans V, V, mounted on the principal shaft or axis of the loom. These picking
sticks traverse the pickers a. a, see figures 1 and 4, which remain always at the same
height and consequently act only upon the shuttle, which is presented to them.
has been said the picking motion takes place from both sides at the same time,
in order to be able to retain the shuttle in one or the other of the two boxes.
By analogous means, this arrangement of shuttle boxes can be applied to other
power looms.
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 1
claim is
1. The improvel means of shifting or selecting the shuttle boxes, consisting in first
raising them to their highest position and in then allowing them to fall successively
to the lower positions by the simple withdrawal of studs or stops which support thei
at these different positions. The preliminary raising of the shuttle boxes and the
withdrawal of the studs or stops being effected at the required times by the Jacquard,
substantially as herein shown and described.
2. The combination with the movement above referred to, of a double picking
motion effected simultaneously from the right and left, thereby enabling the shuttle
to be left in its box at either side of the loom substantially as herein shown and
described.
Dated this 31st day of Dacambar 1.888