Improvements in or relating to Loom Change-box Motions.
Year: 1894

page_text: Date of Application, 10th Apr., 1894-Accepted, 22nd Sept., 1894
COMPLETE SPECIFICATION.
Improvements in or relating to Loom Change-box Motions.
I, GUSTAV FALKE of Ober-Langen-bielau, in the Empire of Germany,
Weaving Factory Manager, 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 apparatus in the nature of a tread-machine, dobby,
or tie-up jacquard, for changing or reversing the operative parts of a throwing
device, similar to Hackings shuttle-box change motion, wherein as is well-known,
by the revolution of an eccentric and its ring, a variation is effected in the height
of the quadruple rising-box of a loom.
The said apparatus for working the throwing device is arranged as follows;-
A toothed sector h has a to-and-fro or reciprocating motion, with a single change
at every alternate stroke, or a double change at every stroke. Connected with the
toothed sector h by means of a bolt h° are two bars m m (Figures 1 and 3) which
at their forward ends form the bearings of the card-prism o.
The bars move
horizontally in the frame a, so that the swinging of the sector h communicates an
alternating movement to the card-prism and cards.
:
Two needles q and p under the influence of suitable springs only one of which
viz. is shown (see Fig. 2), are caused to butt against the card-prism, and the
said needles also move to and fro in the frame a, and are bent at right angles in
the centre to form recesses or shoulders as more clearly shown in Figures 12
and 13.
Gearing with the sector h is a toothed wheel e (Figures 1, 2 and 3) loosely
mounted on its shaft so as to make a half revolution at each swing of the
sector.
The toothed wheel e carries on either side of it a disc or flange (Figures 1 and 6)
with diametrically opposite recesses e¹. Against the outer face of each of these
discs is placed a driving disc g or f (Figures 1 and 3) provided in each case with
diametrically opposite bolts or studs g³ g³ and f'f' respectively. Each of the said
bolts stands out on both sides of one of the driving discs.
Each driving disc is provided with a central opening f¹ (Figure 7) of sub-
stantially rectangular form, so that it cannot only freely turn on its axis but also
be free to rise and fall. Its position is determined, on the one hand, by the lower
bolt or stud 9 Figure 12 (or f') by which it rests on the upper part of the
needle g (or p), and, on the other hand, by the fork-shaped arm which partly
surrounds and supports the disc of the toothed wheel (on either side) extending up
to the bolts or studs g* (or f³) respectively.
In consequence of this arrangement the toothed wheel e can turn freely, while
the driving discs are held fast in their positions.
The coupling together of one of the driving discs g orf with the toothed wheel e
is effected in the following manner;—
:
If the toothed sector be first moved in the direction of the arrow 1 (Figure 2)
the toothed wheel e will make a half-turn in the direction shown by the arrow 2
whereby the two notches e' e' Figure 12 are caused to change places. At the
same time the toothed wheel e has been turning freely on its axis. In the meantime
however by the action of the sector h, the card-prism o with the cards has been
pressed against the needles P and Should there be no corresponding hole in the
card, the needle is thrust forward, in such manner that, as shown at 7 (Figure 13)
the lower bolt or stud g² loses its support, and consequently the driving disc by its

page_text: own weight, drops, whence it results that the upper bolt g' drops into the upper
notch in the disc of the toothed wheel, which effects the coupling together of the
latter with the driving disc aforesaid. On the following return-movement of the
toothed sector in the direction indicated by the arrow 3 (Figure 2) the toothed
wheel e is turned by it in the opposite direction (see the arrow 4 Figure 13) to
the extent of a half-revolution. In consequence the driving disc is also caused to
rotate, which, as hereinafter explained, transmits its movement to the throw-
mechanism.
The return movement of the toothed sector induces also a return movement in
the card prism and cards, so that the needles, also displaced, are drawn back (to
the right) by their springs into their original positions (Figure 12). The coupling
bolt or stud g, which is also turned round, by the toothed wheel, in the direction
marked by the arrow 4, (Figure 13) comes back once more to rest upon the upper
arm of the needle g, the bolt or stud as well as the driving disc is again raised and
so soon as the toothed wheel e has come to the position shown in Figure 12 it is
uncoupled from the said driving disc.
The fork shaped arm which serves to hold the driving disc fast while at rest
also keeps the bolt or stud of the driving disc which has been brought into
engagement with the disc of the toothed wheel, securely held in the notch of the
toothed wheel disc, because the movement of the said notch takes place along the
inner semi-circumference of the said forked arm r.
For the transmission of the movement from the driving-discs to the throw-device
or change mechanism, each driving disc is connected with another disc d' (or c²)
Figures 1, 2, 3 by means of two diametrically opposite slots d (or c³) formed in d¹
(or) respectively, as shown in Figures 4 and 5, to receive the rear or outer ends
of the driving bolts or studs g or f. Thus each of these latter 93 or f³ is
connected with one of the said transmission discs d' or c' by its outer end; while
its inner ends as already described can be coupled at pleasure with the toothed
wheel e.
The transmission disc c¹ (Figures 1 and 5) is formed in one piece with the hollow
shaft c, terminating in a guide-piece (Figure 10) for a slide ¹ carried by the pin or
stud on the eccentric ring i.
The other transmission disc d' is also keyed to a hollow shaft d which however is
secured to the shaft i by a through-pin . The shaft carries the eccentric .
Now if the toothed wheel e is connected by the driving-disc stud 9 Figure 1 with the
shaft i, and the eccentric ring is in connection with the hollow shaft c by means of the
driving stud f the eccentric and the eccentric-ring will make a half revolution,
whereby, through the slide k, stud k³ and link k³, in the manner which is perfectly
well-known, any one of the four cells or compartments of the rising-box may be
caused to present itself in the path for the next throw.
Each of the forked arms r¹ not only serves as described to hold one of the
driving discs, but also, inasmuch as this latter is in permanent connection with the
throw-mechanism, to hold the throw motion fast when at the dead points; it may
be moved into and retained in either an operative or an inoperative position by
means of a notched and weighted bar r³.
Having now particularly described and ascertained the nature of the said inven-
tion and in what manner the same is to be performed I declare that what I
claim is ;-
1. A change motion for quadruple shuttle-boxes in which a driving disc
(g or f) in constant connection with the throw-mechanism and provided with two
diametrically opposite bolts or studs is capable of engaging with an alternately
reciprocating toothed wheel e for the purpose of imparting an alternating half
revolution to the said throw-mechanism when the elbowed recess in one or other of
the needles (p or q) actuated by the pattern card box allows one of the driving
discs (9 orf) to drop and thereby become coupled with the toothed wheel while at
the same time a forked arm r not only holds the coupled driving disc closely engaged

page_text: with the toothed wheel but also holds the said disc and therewith the throw-
mechanism at the dead point position substantially as described and illustrated in
the accompanying drawings.
2. The combination and arrangement of parts constituting the complete apparatus
for adjusting the position of a shuttle thrower substantially as described and
illustrated in the accompanying drawings.
W. P. THOMPSON & BOULT,
Agents for the Applicant.