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Патент USA US2044206

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June 16, 1936.
Filed Sept. 3, 1952
_ 2 sheets-sheet 1
June 15, 1936.
_‘|_ P. CAMPS
Filed Sept. 5, 1932
‘2 Sheets-Sheet 2 v
Patented June 16, 1936
iJNi'E‘EQ STATES rarest assist
Juan Pica?ol Camps. Sabadell, Spain
Application September 3, 1932, Serial No. 631,630
In Switzerland June 21, 1932
2 Claims.
(Cl. 139—250)
This invention relates to an automatic weft re
a lever l2 mounted on a spindle I5. A catch I1
plenishing device for looms for weaving of the
is provided on the end of the lever ‘l, which catch
type in which the weft carrier is in the form of a
engages a stop It ?xed on the slay of the loom.
The device operates in the following manner:
When it is desired to transfer a bobbin from UT
the drum l3, the spindle I5 is rocked in any suit
able manner. This movement is imparted by
rotary drum such as the Northrop type of rotary
5 drum.
According to the present improvements, the
automtic weft replenishing device is character
ized in that the drum which carries the weft
carriers or bobbins is made to advance, for the
10 purpose of ensuring that the flyers, which guide
the bobbins, remain parallel to the lateral sides
of the shuttle, from the commencement of the
transfer, until the end of its movement which is
synchronous with the horizontal component of
15 the hammer, thus producing a completely verti
cal change or straight movement of weft carriers
or bobbins from the drum to the shuttle. The
circular path of the end of the hammer during
transfer movement is such that the change can
2 O be effected during an advancing movement of 18
to 25 mms., or more, of the sley of the loom.
In addition to the movement of the drum during
the transfer, a movement is given to the drum to
place the next succeeding weft carrier or bobbin
25 under the transfer hammer ready for the next
The attached drawings form an integral part
of this speci?cation, and show by way of example,
a convenient embodiment of the invention.
Figure 1 is a side view of the device.
Figure 2 is a front view of the same, partly in
A drum l3 provided with radial flyers [9 has
a toothed ring M with outwardly projecting
35 notch-shaped teeth and a toothed ring 3 with
inwardly projecting ratchet teeth. One end of a
pawl 4 engages the ring 3, the other end of this
pawl being pivotally mounted on a stud I8 ?xed
in a lug ‘lb on a rocking lever '! mounted on a
40 spindle 8 by means of a second lug ‘m. A
hammer l in the form of an elbow lever and
comprising two arms la and lb is oscillatable
around a spindle Ill and normally maintained in
raised or inoperative position by a spring 20.
4 The arm I?) of this elbow lever is also mounted
on the spindle 8. A lever 9 is pivotally mounted
on the spindle 8 and has at its end a catch head
2| which is resiliently maintained in engagement
with the toothed ring M by means of a spring
2. The lever 7 also carries a tappet roller 5
adapted to bear against the under side of the
lever 9 and press the catch head 2! in engage
ment with the toothed ring it. A pin l I is ?xed
on the lever ‘I and engages in the forked end of
the lever l2 and pin II to the rocking lever ‘l,
which consequently swings into horizontal posi
tion so that the roller 5 bears against the under
side of the lever 9 and presses the catch head
tightly into engagement with the ring N, there
by locking the drum against rotation. During
this movement the pawl ll mounted on the stud I8
is advanced over the toothed ring 3. When the 15
lever ‘l is in horizontal position, its catch H is in
the path of movement of the stop It ?xed on the
slay and this stop engages in the catch l'l when
the slay has still 18 to 25 mms. to travel before
reaching the end of the beat up movement. Con
sequently the lever is displaced 18 to 25 mms. by
the slay. Owing to this displacement the spindle
8 is also displaced causing the hammer to swing
about its spindle l0 and press the bobbin out of
the flyer l9 into the slay.
As the lever 9 is also mounted on the spindle
8, it will likewise be displaced and its catch head
2i will rotate the drum l3 so that the bobbin is
gradually brought into the delivering position
during the transfer so that a straight movement
of the bobbin from the drum to the shuttle takes
place during the transfer.
When the slay commences its return movement,
the lever ‘l is liberated and parts are returned 35
into their initial positions by the spring 20. The
lever ‘I is then swung downwards by means of the
lever l2 and spindle l5 so that the roller 5 is
removed from the underside of the lever 9, there
by releasing the lever so that it is held in engage 40
ment with the ring M merely by its spring 2.
Owing to this downward movement of the lever
‘l a pull is exerted on the pawl 4 which con
sequently rotates the drum. During this rotation
the catch head slides into the next following gap
in the ring l4 against the action of the spring 2.
What I claim is:-—
1. An automatic weft replenishing device com
prising in combination with the slay of the loom,
a stop on said slay, a spindle adapted to be
rotated to bring the device into action, a forked
lever keyed on said spindle, a rocking lever carry
ing a roller engaging in the forked end of said
lever and having a catch at its end adapted to 65
be brought into horizontal position in front of
said stop, a drum over said slay provided with
radial ?yers, an internally toothed rim on said
drum, a pawl engaging said rim and cooperating
with said rocking lever to rotate said drum at the
end of the movement of said slay after said stop
has engaged said catch, a spring loaded lever
adapted to engage in said rim to lock said drum
during the replenishing action, a roller on said
10 rocking lever adapted to hold said spring loaded
lever in engagement with said rim when said
rocking lever is in horizontal position and a
hammer pivotally mounted on said rocking lever
adapted to shift horizontally during the transfer
to produce a straight movement of the bobbin
from the drum to the shuttle.
2. An automatic weft replenishing device, as
set forth in claim 1, characterized in that, in the
application of the automatic weft replenishment 5
to the Northrop type of rotary drum, means are
provided to effect the change compatible with a
very long travel of the sley of the loom, whereby
in addition to the movement of the drum during
the transfer a movement is given to the drum to 10
place the next succeeding weft carrier or bobbin
under the transfer hammer ready for the next
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