An Improved Shuttle Changing Mechanism.
Year: 1897

page_text: Date of Application, 21st Apr., 1897-Accepted, 6th Nov., 1897
An Improved Shuttle Changing Mechanism.
A communication by EMIL CLAVIEZ, of Leipzig-Plagwitz, in the Empire of
Germany, Weaving Mill Proprietor.
I, WILLIAM PHILLIPS THOMPSON, F.C.S., M.I.M.E., of the Agency for Foreign
Patent Solicitors, 6 Lord Street, Liverpool, and 6, Bank Street, Manchester both
in the County of Lancaster, 118 New Street, Birmingham in the County of
Warwick and 322 High Holborn in the County of Middlesex, Civil 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:-
This invention relates to an improved shuttle changing mechanism in which
separate shuttles are arranged one above the other in front of the slay on a fixed
table independent of the latter. When the shuttles are to be changed the lowest
one of the vertical row of shuttles is pushed by the fixed table into the advancing
slay after the previous shuttle has been removed backwards from the slay.
The mechanisms for removing the old and inserting the. new shuttle are set
in action either by an electro-magnet or by mechanical means.
In the accompanying drawings,
Figure 1 is a side elevation of the changing device;
Figure 2 a front elevation;
Figure 3, a plan view;
Figures 4-7 are diagrams illustrating the ejection of the old and insertion
of the fresh shuttle;
Figures 8-10 show the main mechanisms in various positions of working;
Figures 11 and 12 show the utilisation of an electro-magnet for determining
the time when the change should take place.
The changing of the shuttles takes place essentially by the action of three
movable sides or walls. These consist of the two shuttle box walls on the change
side (front wall W and rear wall A) and the wall w which is adjustable-forward
and backward on the fixed table T in front of the slay, Figures 4 to 7.
When the change is to be effected, the rear wall A is placed in the box with
its end laid inwards to the loom, Figures 3 and 4. Consequently the shuttle
coming from the other side slides down the inclined wall, and is conveyed entirely
out of the slay on an inclined surface which delivers it into a collecting receptacle
to the disposal of the weaver..
On the succeeding forward movement of the slay, the front wall W rises and
the rear wall w by a movement towards the slay pushes the lowest shuttle of
the vertical row of shuttles from the table T into the slay, Figures 1 and 5. The
inserted shuttle brings then the rear wall A again into its original position.
Walls W and to follow the shuttle backwards and form the front wall of the shuttle
box until the shuttle movement, Figure 6, takes place. Then the wall w again
returns to the table T whereupon the actual shuttle front wall W returns back-
wards into its old position. If the wall w in its return movement comes far
Price 8d.1

page_text: enough to the right, a fresh shuttle will fall downwards from the collecting
receptacle B, Figure 7. As the insertion of a fresh shuttle in the slay can now
immediately take place, it is possible to change the shuttle every two picks.
The movements hereinbefore described are for instance carried out in the
following manner by means of an electro-magnet:-
When it is desired to change the shuttles, an armature m of an electro-magnet M
is operated and then moves from the right, Figure 2, to the left Figure 11. Its
projection thus comes in the way of the pawl which is moving backwards
together with the slay, which pawl consequently encountering the projection g
makes a rotation on the spindle s. By the projections which acts on an arm t¹,
Figure 12, a latch N overcoming the pressure of a spring n is turned on the
spindle simultaneously with the movement of the pawl F., The tooth u of the
latch N thereupon releases the rear shuttle wall A and the latter under the action
of a spring k, Figure 3, is placed obliquely in the box by turning on the pivot i.
The shuttle coming from the other side will therefore slide along the back of the
wall A and be thus removed from the slay, and fall into a suitably arranged
collecting receptacle. It is thus evident that according to the pattern and under
the action of the pattern card one colour may be worked until the pattern card
shows another colour, whereupon a magnetic attraction of the armature m may
be arranged to take place and a change of shuttle be thus effected in the manner
just described.
1
It may be mentioned that the remaining mechanism is of ordinary construction
as regards the breaking of the weft. The weft may be guarded by means of an
ordinary weft guard acting with a weft fork in such a way that after the
cutting has taken place the weft fork throws the loom out of gear by the ordinary
mechanism. The arrangement of the weft guard may also be such that the
loom may be thrown out of gear electrically.
On the subsequent forward movement of the slay, a pawl K encounters a pro-
jection on the armature m and is then drawn to the left, Figure 8. The said
paw] K is thereby held back and releases a latch F which was previously held
up by its projection v.
The latch F is mounted on a lever H revoluble on L and is moved to and fro by
means of a cam E through the action of a rod G. In a lowered position, the
latch engages a pin a on a lever H³ revoluble on 7 and draws this lever on to
the slay on the return of the previously mentioned lever H. It thereby pushes
against the wall of the slay, forcing the shuttle from the table T into the slay:
but before this, the shuttle wall W must be raised. For this object, the lever H¹
is provided with an elbowed projection H³ which is connected at the point d
(Figure 1) with a lever H2 revoluble at n, Figures 1 and 9. On the movement
of the lever H¹ to the rear, the lever H³ is raised, whereby a rod S is also moved
upwards and thus pushes wall W upwards, (Figure 9). In order that the
wall w may remain on the slay during the pushing off of the shuttle and may
form the front wall of the shuttle box, a pawl K¹ is arranged on the lever H³,
which pawl on the movement of the said lever_engages with a projection R on
the slay, Figure 9. In this manner the lever H¹ and also wall to must move to
the rear together with the slay.
The extent to which the lever H¹ is carried along by the slay is limited by a
link Z having at its lower end a slotted frame c in which engages an adjustable
bolty. By this means at the correct moment, the hook of the pawl K¹ is lifted
and disengaged from the projection R, whereupon a spring f draws the lever H¹
again to the front and the levers H3 H lower the wall W.
In order to return the armature of the magnet again to its correct position,
Figure 2, the lever H2 is connected by means of a cord O with a lever H* which
acts on the armature.
The lifting of the latch F takes place by the pin a encountering a bulging
projection on the latch F, the latter being raised so far that the pawl K under
the action of a spring f¹ can again lock the projection of the latch.

page_text: Having now particularly described and ascertained the nature of the said
invention and in what manner the same is to be performed, as communicated
to me by my foreign correspondent, I declare that what I claim is:-
1. A shuttle changing mechanism, characterised by separately movable shuttles
arranged on a fixed table independent of the slay, being pushed into the slay,
according to the change of colours, after the shuttle previously in use has been
removed from the slay, substantially as herein before set forth.
2. A shuttle changing mechanism of the kind described in which the previously
used shuttle is removed from the slay by the rear wall of the shuttle box being
placed obliquely and a fresh shuttle is pushed into the slay by means of a wall
moving against the slay after the front wall of the shuttle box has been lifted,
substantially as described.
3. The general construction and combination of parts taken as a whole, forming
the improved shuttle changing mechanism, substantially as described and
illustrated.
WM. P. THOMPSON & Co.,
Agents.