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Патент USA US2118870

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31, 1938.
D, A, TEBO
EAR CLIP CATCH FOR SHUTTLES
Filed Jan. 11, 1937
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Patented May 31, 1938
2,1,18,87t
UNITED STATES
PATET
OFFICE '
2,118,870
EAR CLIP CATCH FOR SHUTTLES
David A. Tebo, Lawrence, Mass, assignor to U S
Bobbin & Shuttle Company, Manchester, N. H.,
a corporation of Rhode Island
Application January 11, 1937, Serial No. 119,922
2 Claims.
This invention pertains to shuttles for use in
looms and relates more particularly to an im
proved ear clip catch such as is commonly em
ployed in shuttles for retaining the bobbin in
5 place on the spindle in opposition to the forward
drag of the yarn as it is drawn off over the tip
of the bobbin.
In order to grip the bobbin securely, the catch
should be so designed as to engage the butt por
10 tion of the bobbin at substantially diametrically
opposite points. In accordance with a usual
prior practice, the ear clip catch comprises later
ally spaced jaws and is made either from two
independent pieces of metal disposed at oppo
* <, site sides of a recess in the rear end of the shuttle
body or as a single substantially U-shaped piece
of metal with its closed end disposed rearwardly
and with its legs extending forwardly along op
posite sides of the recess. In neither of these
:0 arrangements are the forward extremities or
bobbin-engaging jaw-portions of these spaced
elements so rigidly united as to prevent them
from becoming spread apart abnormally, par
‘ ticularly after a prolonged period of use, or from
97, being bent by blows or by reason of carelessness
on the part of the user when attempting to place
the bobbin in the shuttle, so that frequently these
prior clips are ineffective to hold the bobbin
securely.
so
(Cl. 139—-208)
rear or butt portion of a bobbin such as may be
used in a shuttle of the kind shown in Fig. 1;
Fig. 5 is a. plan view of a blank of a contour
desirable for use in making the improved catch
of the present invention;
Fig. 6 is a plan view of the improved catch re
moved from the shuttle;
Fig. 7 is a bottom plan view of the catch;
Fig. 8 is a side elevation of the catch;
Fig. 9 is a vertical section substantially on the 10
line 9—9 of Fig. 6; and
Fig. 10 is an elevation of the front end of the
catch, looking rearwardly.
Referring to the drawing, the numeral l desig
nates a shuttle such as is used in looms for Weav- 15
ing textile fabric, the shuttle having the usual
longitudinal chamber 2 for the reception of the
bobbin, this chamber being provided with a rear
ward narrow extension 3. The shuttle is fur
nished with a spindle 4 designed to enter an axial 20
bore in the bobbin, this spindle having a pivotal
portion 5 which is disposed in the extension 3 of
the bobbin chamber and which is pivoted to swing
in a vertical plane on a pin 6 embedded in the
shuttle body.
25
The improved ear clip catch 1 forming the im
mediate subject matter of the present invention
is conveniently made from a blank of the gen~
eral shape shown in Fig. 8. This blank may con
The principal object of the present invention
is to provide an ear clip catch which will better
withstand the viscissitudes of use than do those
sist of a length of sheet metal, for example steel, 30
of usual prior construction, and in particular to
or inclined as shown in Fig. 5. This blank is
furnished with a recess [2 of substantially U
provide a catch of very simple and inexpensive
:35 construction having its bobbin-engaging jaw
portions so disposed as to engage the butt por
tion of the bobbin at substantially diametrically
opposite points and so rigidly united that their
initial predetermined spacing and relative ar
40 rangement can not readily be changed during
use.
Other objects and advantages of the invention
will be made manifest in the following more de
tailed description and by reference to the accom
4 3 panying drawing in which:
Fig. 1 is a plan View of a shuttle of the type to
which the present invention relates, showing the
having substantially parallel edges 9 and It and
preferably having its. ends II and Na beveled
shape extending inwardly from its edge 9 and 35
disposed centrally of its length, such recess hav
ing the substantially parallel edges l3 and M
which merge into the curved lower edge portion
of the recess.
'
In forming the catch, this blank is shaped, as 40
by bending, pressing or the like, the principal
bending taking place in the locality of the dotted
lines m, n of Fig. 5 so as to cause the end portions
equipped with the improved catch, showing the
20 and 2! of the blank to be brought into sub
stantially parallel planes and spaced apart a dis 45
tance such that the pivotal portion 5 of the
shuttle spindle 4 may be disposed between them.
These end portions 20 and 2| of the blank may
be furnished with openings l8 and I9, respec- 50
tively, either before or during the shaping oper
mode of operation of the latter;
Fig. 3 is a fragmentary vertical section on the
line 3-—3 of Fig. 2;
55
Fig. 4 is a fragmentary side elevation of the
when the parts 20 and 2| are disposed in parallel
relation and being designed to receive the pin 6
upon which the spindle is pivoted, such pin thus 55
improved ear clip catch installed therein;
Fig. 2 is a fragmentary horizontal section
50 through the rear end portion of a shuttle
ation, these openings being brought in alignment
2,118,870
also constituting means for anchoring the catch
in ?xed position within the shuttle body.
In bending the material of the blank, it is
the bobbin has been properly seated against the
bowed outwardly at the regions 22 and 23 so as
to form a chamber 24 just to the rear of the cen
tral part l2a of the blank which now constitutes
a connecting web integrally uniting the members
20 and 2| at the forward end of the clip.
The edges I3 and I4 of the recess in the blank
are so spaced apart that after the blank has been
bent to the shape shown in Fig. 6, they will re
ceive between them the narrow neck l5 of a bob
ordinarily employed; it engages the bobbin at dia
metrically opposite points in accordance with the
best usage ln such devices; it is. far more durable
than those commonly employed; and it is so sim
ple and cheap to construct and install that it
may be availed of by all users of shuttles of this
10
general type without undue expense.
bin B (Fig. 4), such neck joining the yarn-re
ceiving portion l6 and the butt portion I‘! of the
bobbin. The edges l3 and I4 in e?ect constitute
bobbin-gripping jaws and engage the neck l5 at
diametrically opposite points with a fairly snug
?t,—the chamber 24, which lies behind the web
I2b, being of such dimensions as to admit the butt
portion 1 of the bobbin.
After the clip has been formed’ as thus described, it is disposed within the recess or exten
sion 3 of the bobbin chamber;-—the pivotal por
tion 5 of the spindle is disposed between the par
allel legs 20 and 2! of the catch, and the pin or
bolt 6 is then inserted, thereby ?rmly anchoring
the clip in position with its forward portion dis
34)
to U!
40
45
posed just within the bobbin chamber 2 and at
the rear end of the latter. In the normal position
of the spindle 4, in which it lies longitudinally of
the chamber 2 of the shuttle, the spindle extends
outwardly through the recess l2 of the catch and
is substantially concentric with the arcuate edge
of the recess. In placing the bobbin in the shuttle,
the spindle is swung upwardly out of the bobbin
chamber, the bobbin is then pushed down onto
the spindle until it engages a suitable stop on the
spindle, and then the spindle with the bobbin is
swung downwardly into the bobbin chamber, the
butt portion I‘! of the bobbin moving down into
the chamber 24 of the catch while the jaws, that
is to say, the spaced edges l3 and I4 of the recess,
enter the groove or neck portion l5 of the bobbin
and thus positively prevent the bobbin from mov
ing forward within the bobbin chamber.
Since the jaws l3 and M of the catch are in
tegrally joined by the web portion lZa which
underlies the rear part of the bobbin when the
The catch is thus much more reliable than those
While one desirable embodiment of the inven
tion has been illustrated by way of example, it
is to be understood that the invention is not
necessarily limited to the precise details of con
struction or to the mode of forming the device
herein described, but is to be regarded as broad
ly inclusive of any device having similar char
acteristics and such as may fall within the scope
of the appended claims.
I claim:
1. An ear clip catch for loom shuttles compris
ing a unitary length of sheet metal of substan
tially uniform width but having a downwardly
concave recess substantially midway its extremi
ties, the end portions of said strip being disposed 25
in substantially parallel spaced planes to form
side members, said side members being provided
with openings for the reception of anchorage
means, the recessed mid-portion of the strip con
stituting a transverse web disposed in a plane 30
substantially perpendicular to the planes of said
end portions and the material of the side mem
bers being bowed outwardly adjacent to their
junction with the web to- provide a chamber for
the bobbin butt.
2. An ear clip catch for a loom shuttle hav
ing a pivoted bobbin-receiving spindle, said catch
comprising a unitary elongate strip of sheet metal
of substantially uniform width disposed to form
spaced elongate side members, and a transverse 40
web integrally uniting said members at their for
ward ends, said web being substantially perpen
dicular to the 'planes of the side members and
having a recess extending downwardly from its
upper edge, the opposite edges of the recess con 45
stituting bobbin-engaging elements operative to
engage the rear portion of a bobbin at substan
tially diametrically opposite points, the side mem
latter is in place, it is substantially impossible
bers being substantially parallel and spaced apart
for these jaws or edges 13 and I4 to become dis
placed relatively to each other during use so that
they would no longer properly engage the bobbin
to receive the pivotal end of the spindle between
them, said side members having openings for the
reception of a pivot pin operative to form a
butt and perform their intended function. This
rigid web I2a tends to keep the edges I3 and I4
in vertical alignment and in the same plane; pre
pivot for the spindle and also to constitute an
chorage means to ?x the clip in the shuttle body,
the forward portion of the clip just to the rear
of the transverse web being transversely widened
‘ vents their spreading apart; and greatly strength
ens the clip in opposition to ‘the downward pres
sure to which it is subjected frequently by the
60
spindle stop.
carelessness of the operator in attempting to
swing the bobbin down into the shuttle before
to form a chamber for the reception of the bobbin
butt, said chamber being open both at its top and
bottom.
DAVID A. TEBO.
60
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