Improvements in Shuttle Relieving and Checking Motions of Looms for Weaving.
Year: 1895

page_text: Date of Application, 14th May, 1895-Accepted, 31st Aug, 1895
COMPLETE SPECIFICATION.
Improvements in Shuttle Relieving and Checking Motions of Looms
for Weaving.
I JAMES PRESTON, Master Weaver, of Stialan, near Berlin, in the Empire of
Germany do hereby declate 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, which is fitted to the slas, that is, directly connected with one
of the connecting rods which set the slay in oscillation, has for its object not only
to obviate the present heavy wear of shuttles, pickers and picker cams etc. which
takes place on the shuttle movement but also to effect a considerable saving of
power and a decrease of the unpleasantly loud noise.
Referring to the accompanying drawings
Fig. 1 shows a perspective side view of a power loom with the apparatus attached
thereto, whilst Figs 2-5 show details of the arrangement.
Figs. 6-8 show the various moments of the working cycle and the then positions
of the different parts when working together Fig. 9 shows the arrangement under
the loom of the two levers (HIH) connected together by the rotatable rod (a),
the slay is in this instance only shown by dotted broken lines.
At both ends of the slay L, sideways in the cheek W of the shuttle box, there
is a slot like opening made (Figs 1,7 and 8) in which the wedge shaped catchers F,
Figs 1, 5, 7 and 8, are notatably fitted on hinge pins S. On these catchers rest
the upper straight aims of the levers (H and H) (Figs 1, 7 and 8) which are
fastened to a 1od a running below and extending across the width of the
slay (Fig 9) by means of square holes made in the front part being forced on to
corresponding squares on the iod a, then position being maintained by nuts
screwed on.
One of these two levers (lever H) 1s, contrary to the other, (H) provided with
a slot the opening h (Figs. 2 and 9) for the purpose of obtaining 1otatablo
connection thereby by means of the eye bolt A (Figs. 1 and 3), with the pin B
secured to the connecting rod G (Figs. 1 and 4), the motion of the sand lever being
adjusted by means of the nut z.
The action of the apparatus is as follows.
At the moment when the shuttle is thrown from one shuttle box to the opposite
one, the corresponding catcher is brought completely out of touch with the shuttle,
which takes place through the connecting rod G in its movement from 2 to 3
(Fig. 6) diawing the eye bolt A. down in consequence of the change of position
ot the bolt B connected therewith. Consequently the levers II and II', as they are
connected to the eyebolt A, change their position and are drawn away behind from
the slay. The catcher F can then protrude sufficiently from the slay check Fig. 8
to leave the shuttle perfectly free and loose in the shuttle box. so that the
picker need only exert a correspondingly soft blow on the shuttle, in consequence
of its free condition, in order to force it to the opposite side. Before however the
shuttle has traversed the whole length of the shuttle race the catcher in the
opposite shuttle box moves back with its wedge shaped surface Fig 7 and catches
the shuttle at the end of its travel quite softly, since the shuttle is stopped by the
inclined wedge surface.
The return of the levers H and II' to then first position and the simultaneous
return, thereby induced, of the catcher into the shuttle box (Fig. 7) takes place

page_text: by the further rotation of the crank ar.n y from 3 to 4 (Fig. 6) raising the bolt B and
thereby also pushing forward the oyebolt A in the sloth of the levor (H) whereby
the lever itself is able, suce the eye-bolt slides forward, (Fig. 1), to return to its
position by reason of the excess weight of the usual striking piece on the rod a.
On rotation again of the crank arın from 1 to 2 and from 2 to 3 the beforementioned
movements are repeated
As both levers H and II' are fitted to a common
notatable rod a (Fig. 9) they always make equal movements, since the one lever H
is connected with one of the two connecting 1ods G inipaiting movement to the
slay, and with these the catchers F correspond.
Hlaving now particularly described and ascertained the nature of my said inven-
tion and in what manner the same is to be performed, 1 declare that what I
claim is .-
1. A shuttle ratcher reciprocating movement for the purpose of facilitating the
hitting off of the shuttles and reducing the wear and tear of the shuttles and
picker mechanism, essentially distinguished by its being effected on one side only
of the loom, by means of one of the two crank aims which put the slay in
Swinging motion.
2. For the purpose of effecting the action of the shuttle catcher reciprocating
movement, an arrangement fitted directly on to the slay, consisting of two levers II
and fastened to a 1otatable 1od a one lever H of which is provided with a slot
like opening which serves for the reception of an eyebolt. A, carrying a regulating
nut r, the eye of which is loosely and iotatably connected to a pin B secured to
the crank arm G so that it can be inserted as required whereby the various
positions of a crank arm produced by us movement are transmitted to the two
leveis I and II and from these again on to the wedge shaped catchers F rotatably
fixed to binge pins S in the check W of the shuttle boxes
Dated this 13th day of May 1895.
WHEATLEY & MACKENZIE,
40 Chancery Lane, Loudon, W.C., Agents.