Improvements in and relating to Means for Changing Bobbins or other Weft Carriers in Loom Shuttles when the Weft is Exhausted
Year: 1899

page_text: Reprinted as amended in accordance with the decision of the Comptroller-General
dated the 8th day of August, 1902.
The Amendments are shown in erased & italic type.
Date of Application, 30th Aug., 1899-Accepted, 4th Nov., 1899
"
COMPLETE SPECIFICATION (AMENDED).
Improvements in and relating to Means for Changing Bobbins
or other Weft Carriers in Loom Shuttles when the Weft is
Exhausted."
We, WILLIAM HENRY BAKER, of Central Falls, in the County of Providence
and State of Rhode Island, United States of America, Electrician and FREDERIC
ELLSWORTH KIP, of Montelair, in the County of Essex and State of New Jersey,
United States of America, Manufacturer, 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 that class of looms which are provided with automatic
devices for supplying them with weft or filling; and the object of the invention is
to provide the loom with a simple means for supplying a filled weft-carrier to the
shuttle in play, and to displace the empty, or nearly empty weft-carrier in the shuttle,
whenever the weft-carrier in the latter shall be nearly denuded.
In the accompanying drawings, which illustrate an embodiment of the invention.
Figure 1 is a sectional side elevation of a part of a loom showing this invention
applied thereto; and Fig. 2 is an end view of the magazine, showing the rotating
devices thereof. Fig. 3 is a front view of the parts seen in Fig. 1; and Fig. 3* shows
the same parts that are seen in Figs. 1 and 3, but representing them as in the
act of supplying a filled weft-carrier to a shuttle. Fig. 4 is a sectional plan of
the parts seen in Figs. 1 and 3, and illustrating the automatic shuttle-evener.
Fig. 5 illustrates another form of magazine adapted to be employed with the
invention.
Figs. 6, 7 and 8 illustrate the weft-carrier and shuttle, on a larger scale than the
principal views. Fig. 6 is a fragmentary perspective view of the shuttle and
bobbin-holder; Fig. 7 is a plan of the shuttle, the bobbin therein, and the
shuttle-box; and Fig. 8 is a longitudinal, vertical, axial section of the shuttle and
bobbin.
In the construction herein illustrated, the filled weft-carriers, or bobbins, are in a
suitable magazine, which discharges one bobbin at a time into a receiver which is
situnted directly over the shuttle, in the shuttle-box on the lay when the vibrating
lay has beaten up. A vibratable knocker, on the loom frame, is adapted, when
actuated by a going part of the loom as the lay for example-to drive the
full bobbin from the receiver down into the shuttle, and to displace and drive out
the denuded bobbin therefrom.
To effect the above object an electromagnet is adapted to put into position
a tappet-which may be a hinged arm carrying the armature of said magnet,
which tappet as the lay beats up, will actuate said knocker and shift or change tě
bobbins. The exhaustion of the weft, on the bobbin in the shuttle serves to permit

page_text: In the shuttle S, and perhaps best seen in Fig. 6, are two-spring-plates of
metal, 30, 30, which are preferably formed by bending the thin metal into a U shape
and securing the same to the shuttle by a screw 30°, seen in Fig. 8. These spring
plates elastically embrace the butt of the bobbin when the latter is forced down into the
shuttle, and hold it quite firmly, and they contact electrically with the bands or metallic
parts 25, on the bobbin. On the shuttle is also secured a spring-plate 31, which when
the bobbin is pressed down into the shuttle, comes into contact with the butt-plate or
ring 26 on the bobbin.
The shuttle has on its outer face two contact-plates of metal, 32 and 32x, which are
connected electrically with the respective spring-plates 30 and 31, by suitable con-
ductors, 33 and 34. Thus a current may flow, when the bobbin is denuded, or nearly
Bo, from the plate 32, by conductor 33, to plate 31, thence to butt-plate 26, and thence
by a conductor 28 to the ring or piece 27. The spring 29 being now in contact with
ring 27, the current will flow through said spring to the band or bands 25, thence to
the spring-plates 30, and thence by way of conductor 34, to the contact plate 33×,
When the shuttle euters the shuttle-box 13 (Fig. 7) the contact-plates 32 and 32x
thereon will come into electrical contact, respectively, with spring terminals 35
and 35*, on the box these latter form terminals of an outer operating circuit
formed of conductors, c and cx, and includes the electromagnet 20 and any
generator, G.
It will be obvious that the moment the exhausted bobbin is driven out of the
shuttle, the operating circuit will be broken, and the spring 18, will
retract the knocker 16, as soon as the way is clear. On this upward,
receding movement of the knocker, the rotary magazine, drum 7, will be turned
thereby to the extent of one cell 10. Any known means for effecting this may be
employed; the one herein shown is best illustrated in Fig. 2, which is a view of the
end of the magazine seen at the left in Fig. 3. On the shaft 8 is secured a disk or
plate 18x, having as many teeth on its periphery as there are cells 10; and on a
bracket 16x, on the knocker, 16, is pivotally mounted a beveled spring latch, 16*
which is adapted to engage the teeth on the disk 18x. When the knocker 16 is
driven down, the latch or pawl 16ª takes under a tooth on the disk, and on the
upward receding movement of the knocker, the drum 7 is thereby rotated. To
steady the drum when rotated and set, a yielding detent 35" on the casing 11, is so
placed as to wipe over and engage a tooth on the disk 18x. This means for rotating
the drum 7 is in the nature of a pawl-and-ratchet device.
When a shuttle s, enters the shuttle-box 13, it is important that it should always
reach and occupy therein a certain position, so that the entering bobbin 6 may make
proper contact at its butt through the plate 26 thereon, with the spring-plate 31
(Figs. 7 and 8) on the shuttle; and to insure this contact a precautionary device is
employed which is best seen in Fig. 4.
This device, which we have called the shuttle-evener, comprises an arm 36,
pivotally mounted on the breast-beam 2, so as to have some lateral play, and furnished
with a retracting spring, 37, and a stud, or other projecting part, 38, on its lower face.
This arm 36 projects toward the lay 3, and is placed at such level that when the lay
beats up the free end of the arm projects over the raceway on the lay and lies in the
same horizontal plane as the shuttle S is in the box. The lay carries a cam-piece, 39,
which projects toward the breast-beam and has an inclined lateral edge which, as the
lay beats up, engages the stud 38 and swings the evening arm 36 to the position seen
in Fig. 4. The arm strikes the shuttle and drives it into the shuttle-box to the
proper or desired extent. To insure the proper working of this device the loom should
be so constructed that, normally, when at rest in the box, the shuttle will not be quite
so far in the box as is desired for the reception of the bobbin 6. In Fig. 4, R
represents the reed.
The end of the weft-thread on each bobbin in the magazine will be led therefrom
and attached to some point, as for example to the pin or holder, 40, on a branch from
the bracket 9 supplying the magazine, as seen in Fig. 3; and when the shuttle is
picked, the thread will be drawn automatically into a thread-eye, 41, in the shuttle,
seen in Fig, 7 and 8.

page_text: the going part of the loom for actuating the knocker at proper times, electro-magnetic
inachanism controlling the movements of said tappet, and automatic mechanism for
evening the shuttle so as to insure its occupying the proper position in the box to
receive the bobbin, constructed and arranged substantially as set forth.
-In-e-loom, the combination with the vibrating lay, and the shuttle box mounted
thereon,-of-a-bobbin-magazine having-a-delivery-outlet, a receiver at said ontlet to
receive a bobbin delivered-from-the-magazine, said receiver being so-situated-as-to
be-directly-over-the-shuttle-when-the-hey-has-beaten up, a vibrating knoeker, to drive
the bobbin from-the-receiver-into-the-shuttle,-means-for-operating said knocker-at
proper times,-and-electro-magnetio-mechanism-controlling said-knocker operating
means, said controlling mechanism--comprising an operating magnet an electric
eireuit-having-terminals-at-the-shuttle-box; and a circuit within the shuttle which
is closed with--the-outer-oireuit-when-the-shuttle-is-in-the-box, said-circuit-in-the
shuttle-having-in-it-a-break-which is held open-by-the-wett, substantially-as-set
forth.
20. In a loom, the combination with a vibrating lay, and the shuttle-box mounted
thereon, of a rotatable bobbin-magazine, a receiver at the outlet of said magazine, to
receive a bobbin delivered therefrom, a vibratable knocker for knocking the bobbin
from the receiver down into the shuttle on the lay, mechanism for vibrating said
knocker at proper times, electrical means controlling said knocker-operating
mechanism, and means for imparting intermittent rotary impulses to said magazine,
substantially as set forth.
3 10. In a loom, the combination with the vibrating lay, the shuttle-box thereon,
and a cam piece thereon, of the shuttle-evening arm pivotally mounted on the
loom-frame and adapted to play in the same plane with the shuttle in the box, and
the spring for retracting the arm, said arm having a stud or part which projects into
the path of the cam piece on the lay, substantially as set forth.
In a loom, the combination with the vibrating lay, the shuttle-box thereon,
the magazine, and the receiver, situated over the shuttle-box when the lay is at the
beating up point of the pivotally mounted knocker, having a pendant arm 17, the
retracting spring 18, the electro magnet on the lay, its armature the hinged tappet
on the lay and carrying said armature, said tappet being so mounted that when
the magnet is excited the tappet is aligned with the arni on the knocker, the
controlling electric circuit, including said magnet and baving terminals at the shuttle-
box, the shuttle having in it an electric circuit closed with the exterior circuit when
the shuttle is in the box, and a bobbin, having in it a circuit closed with that in the
shuttle when the bobbin is in place therein, said circuit in the bobbin having in it a
self-closing break held open by the weft thereon, substantially as set forth.
5 12. In a loom, the combination with the vibrating lay, the bobbin-magazine, the
vibrating knocker, the electro-magnet, the tappet for actuating the knocker controlled
by said magnet, and the outer circuit including said magnet and having terminals at
the shuttle-box, of the shuttle, having contact-plates 32 and 32* to contact with the
terminals on the box, the end-spring 31 and side-springs 30, connected electrically
with the respective plates 32 and 32x, the bobbin, having a metal band or bands 25,
which are embraced by the side-springs 30, and a metal end piece 26, which is in
contact with the end-spring 31, the metal ring or piece 27, and the spring terminals 29,
in electric contact with the bands 25, and held out of contact with the piece 27, by
the overwrapped weft, substantially as set forth.
6 13. As an article of manufacture, a shuttle open through from bottom to top, and
provided with two exteriorly situated contact-plates 32 and 32*, metal side springs 30
to embrace the bobbin and connected electrically with one of said contact-plates,
and an end spring 31, connected electrically with the other contact-plate, substantially
as set forth.
Dated this 20th der of Angust 1800