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Патент USA US3078827

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Feb. 26, 1963
E. H. CONRAD
SCHIFFLI TYPE EMBROIDERI
AND SI-HJTTLE BOX THEIR
3,078,817
MACHINE
P.
"
Filed May 1, 1961
INVENTOR.
ERICH HENRY CONRAD
'
‘*6 *4
BY
W
ATTORNEY
States atet
"we
3,078,817
Patented Feb. 26, 1963
1
2
3 078,817
readily comprehensible, and without any intent of limit
ing the invention to the speci?c details shown therein.
In the drawings:
SCHH‘FLI TYPE EMlBRGIDERHNG MACHINE
AND SHUTTLE BOX THEREFOR
FIG. 1 is a fragmentary, elevational ‘and partly sec
Erich Henry Conrad, 210 Oakdene Ave., Teanech, NJ.
Filed May 1, 1961, Ser. No. 106,781
4 Claims. (Cl. 112—95)
tional view showing a pair of contiguous shuttle boxes
The present invention relates to Schi?li embroidering
machines, and particularly to the shuttle boxes of such
machine;
embroidering machines.
of the invention associated with a shuttle box supporting
and shuttle moving mechanism of a Schi?li embroidering
FIG. 2 is a fragmentary, enlarged, elevational View
10 ‘showing the pair of shuttle boxes with a shuttle mounted
In Schi?li embroidering machines of the type to which
the present invention relates, a plurality of horizontally
on one of them, the shuttle being shown in position with
its point engaging within a thread loop formed by a
movable needles are arranged in one or more spaced
horizontal rows on one side of a fabric and are simul
needle;
fabric with a cooperating shuttle. Such shuttles are each
drawings more or less diagrammatically illustrating an
embodiment of the present invention, the same show a
shuttle box supporting bar, 10, which may be of conven
tional construction and conventionally mounted on an
FIG. 3 is a view similar to that of FIG. 2, showing
taneously moved to pierce the fabric, carrying threads to 15 the shuttle having moved approximately half-way its
the other side of the fabric where they each form a hori
length through the thread loop; and
zontally disposed loop on the other side of the fabric.
FIG. 4 is a section taken on line 4—4 of FIG. 3.
Each of the needles is provided on the other side of the
Referring, now, in greater detail to the accompanying
provided with a shuttle box that guides it for reciproca
tion through the loop of thread formed by the needle '
projecting through the fabric. Each of these shuttles is
formed with a pointed upper end and a generally stubby
embroidering machine, and a shuttle moving bar, 12,
lower portion and with a ?at gliding surface. Each of
which carries the shuttle moving pins, 14, and is opera
the shuttle boxes comprises a foot portion by which it is 25 tively connected by a rod, 16, that passes through an
secured in place, and a stem portion which extends slightly
opening in the bar 10, to the driving machanism of the
diagonally upwardly and is formed with a flat sloping sur
apparatus; all in the conventional manner.
face along which the gliding surface of the shuttle moves.
Mounted in closely spaced relation on the bar 10, in
Heretofore, the shuttle boxes had to be spaced apart a
a substantially standard manner, are a plurality of shuttle
distance suiiicient, at least, toaccommodate the maximum 30 boxes, each generally designated as 18 (only two are
thickness of the shuttle together with the thickness of the
shown). Each of the shuttle boxes 18 is of generally
thread of a stitch loop along the thickest portion of the
and‘ substantially conventional construction, consisting of
shuttle, so as to permit the movement of the shuttle along
a base or foot, 20, having a ?at bottom face by which
it is supported on the bar 10, and a post section, 22,
one box, through the loop of its corresponding needle,
without interference by or contact with the contiguous
surface of the adjacent shuttle. Such spacing between
shuttles affords leeway between the sliding surface of
one shuttle box and the contiguous surface of the adja
" which may preferably be of substantially rectangular
cross-section, extending slightly diagonally upwardly from
the foot or base 20, at a slight angle to a line normal
to the bar It}. The upwardly facing side, 24, of each of
cent shuttle box for the shuttle to move away, on exces
the shuttle box posts 22 is smooth and constitutes a slid
sive vibration, or for some other reason, from its support 40 ably supporting surface for the ?at side of a shuttle, 26,
ing surface of its shuttle box against the contiguous sur
in the conventional manner. The post 22 has secured
face of the adjacent shuttle box to a degree that its pointed
thereto, on the side thereof adjacent the needles of the
end missed the loop formed by its needle, thus resulting
machine, a conventional needle plate, 28, having an em
in a missed stitch.
bossed portion, St}, in which the needle opening, 32, is
It is the general object of the present invention to pro 45 formed. The post 22 may also be provided at its oppo
vide Schiffli embroidering machines in which missed
site face with the conventionally formed ?ange, 34, over
stitches from the cause aforesaid are substantially elim
hanging the sliding surface 24 of the post. The post 22
inated.
is further provided with a conventional transverse needle
It is an object of the present invention to provide shuttle
passage groove, 36, in horizontal alinement with the
boxes for Schi?li embroidering machines which may be
needle opening 32, which groove opens into the face 24
spaced close enough to one another to prevent any shuttle
of the post; the needle, 38, carrying the thread, 40, re
ciprocating in the groove 34 and forming therein a thread
to move away from the supporting surface of its shuttle
box a sui?cient distance to miss a loop and yet permit
loop, 42, that extends outwardly of the groove, in the
conventional manner.
the reciprocating movement of the shuttle through a loop
formed by its cooperating needle without interference or
The shuttle 26 is of conventional type having a rela
obstruction being offered by the contiguous surface of an
tively thick body portion, 27, extending about two-thirds
adjacent shuttle box.
its length, and a pointed end portion, 29, and is disposed,
when at rest, with its pointed end 29 immediately below
It is another object of the present invention to provide
the opening of groove 34 into the sup-porting surface 24,
shuttle boxes of the character described for Schi?li em
broidering machines that may be produced at no greater 60 so that when it is upwardly moved by a pin 14, its pointed
end 29 will engage through the loop 42 and enlarge it
cost than the similar shuttle boxes of the prior art, and
and pass through it in its upward movement, .to complete
may be installed and used‘ with no greater effort or cost
a stitch, all in the conventional manner.
‘
than the similar shuttle boxes of the prior art.
Formed in the downwardly facing side, 44, of each
The foregoing and other objects and advantages of
the shuttle boxes for Schi?li embroidering machines of 65 post 22 and extending transversely thereacross, opposite
its groove 36, is a relatively shallow recess, 46. The re
the present invention will become more readily apparent
cess 46 is of a depth not greatly exceeding the thickness
to those skilled in the art from the embodiment thereof
of an embroidery thread or yarn likely to be used with
shown in‘ the accompanying drawings, and from the de
the apparatus, and is of a height less than the height of
scription following. It is to be understood, however, that
the thicker portion 27 of the shuttle 26, and is preferably
such embodiment is shown by way of illustration only,
formed with gradually slanting sides, for the purpose
to make the principles and practice of the invention more
which will hereafter be explained.
3,078,817
4
3
angle to a plane normal to said ?at bottom surface of
The posts 22 of the shuttle boxes 18 are of such thick
ness and are so arranged that a shuttle resting on the
said base, said post having its upwardly directed face
surface 24 of one of them is va?orded minimum clear
ance with the surface 44 of the adjacent one, just su?i
cient to permit free movement of the shuttle but not
su?icient to permit the tilting of the shuttle away from
its supporting surface, whereby it may be displaced from
its supporting surface a sufficient distance to have its
smooth and adapted to slidably support a shuttle there
on and a needle groove formed therethrough opening into
said upwardly directed face, said post having formed
in its downwardly directed face, opposite the opening of
said needle groove, a transversely extending shallow
recess adapted to accommodate the thickness of a thread
looped about a shuttle moved past said recess.
pointed end 29 miss the loop on its upward movement, to
2. The shuttle box of claim 1, wherein said shallow
produce a missed stitch. Thus a shuttle will, at each 10
recess extends above and below said needle groove and
upward movement thereof, engage through a loop 42
is of a height less than the height of the thick body por
and thereby avoid any possibility of missed stitches by
tion of a shuttle supportable on said shuttle box.
reason of non-engagement of the shuttle through the
loop.
3. ‘In an embroidering machine of the character de
FIG. 2 of the drawings illustrates the manner in which 15 scribed, having a shuttle box supporting bar, a plurality
the shuttle 26, whose back or spine, at its thicker portion
of shuttle boxes supported on said bar, each said shuttle
box comprising a base having a hat underside adapted
27, is in close proximity to the underside 44 of the adja
cent post 22, is held by such underside in position, in the
to be rested on the supporting surface of said bar and
a post of substantially rectangular cross-section extend
initial stages of its upward movement, to engage through
a relatively small loop 42 extending out of the needle 20 ing diagonally upwardly from said base at an acute
groove 36 of its supporting post 22.
angle to a plane normal to said flat bottom surface of
As the shuttle moves upwardly through the loop 42,
said base, said post having its upwardly directed face
so that the latter is enlarged and is disposed on the spine
smooth and adapted to slidably support a shuttle and a
of the shuttle, the clearance recess 46 accommodates the
needle groove formed therethrough opening into said
loop thread 42, so that such thread does not interfere 25 upwardly directed face and having formed in its down
with the movement of the shuttle and is not damaged by
wardly directed face opposite the opening of said needle
any contact with the underside of the adjacent post, in
groove a transversely extending shallow recess, said shut~
spite of the close tolerance between that post underside
tle box of a thickness and arranged to provide a minimum
and the shuttle, as clearly illustrated in FIG. 3 of the
clearance between the downwardly directed face of each
drawings.
said posts, with the thick body portion of a shuttle sup
The spine of the shuttle 26 is engaged by the upper
ported on the upwardly directed face of the adjacent of
portion of the post side 44, above the clearance recess
said posts whereby the shuttle disposed on said upwardly
46, before the lower portion of the shuttle spine clears
directed face of said adjacent post is inhibited from
the portion of the face below the clearance recess 46, so
moving away from said face by the downwardly directed
that the shuttle is held substantially steady throughout
face of said ?rst post.
its movement up and down in its shuttle box, to avoid
4. In an embroidering machine of the character de
undue vibration and wear and tear and the shuttle and
scribed, having a shuttle box supporting bar, a plurality
the boxes.
of shuttle boxes supported on said bar, each said shuttle
This completes the description of the shuttle box of
box comprising a base having a ?at underside resting
the present invention and the manner of its installation,
on said bar and a post of substantially rectangular cross
use and operation. It will be readily apparent that the
section extending diagonally upwardly from said base at
shuttle box of the present invention substantially elimi~
an acute angle to the plane normal to said ?at bottom
na-tes missed stitches due to failure of a shuttle to engage
‘surface of said base, said post having its upwardly di
through a needle thread loop. It will also be apparent
rected face smooth and adapted to slidably support a
that the shuttle box of the present invention may be 45 shuttle thereon and a needle groove formed therethrough
formed at relatively no advance in cost over similar ones
opening into said upwardly directed face, said shuttle
now in conventional use, and that it may be installed in
boxes of a thickness and arranged to provide a minimum
the same manner as such conventional shuttle boxes, and
clearance between a shuttle movably supported on the
does not require any alteration in its own general struc
‘upwardly directed face of one of said shuttle boxes and
ture, nor in the structure of the apparatus as a Whole, 50 the downwardly directed face of the adjacent of said
for its installation and use.
‘shuttle boxes, whereby the shuttle disposed on said up
It will be further apparent that numerous modi?cations
wardly directed face of said one shuttle box is inhibited
and variations in the shuttle box of the present invention
from moving away from said face by the downwardly
may be made by anyone skilled in the art, in accordance
with the principles of the invention hereinabove set forth,
and without the exercise of any inventive ingenuity. I
desire, therefore, to be protected for any and all such
modi?cations and variations that may be made within
the spirit of the present invention and scope of the claims
hereto appended.
What I claim is:
1. In a shuttle box for use in an embroidering machine
having a plurality of shuttle boxes of the character de
scribed, said shuttle box including a base having a ?at
underside adapted to be rested on a supporting surface
and a post of substantially rectangular cross-section ex
tending diagonally upwardly from said base at an acute
directed face of the adjacent of said shuttle boxes, said
shuttle boxes each having means provided in its down
wardly directed face opposite the needle groove thereof
to provide clearance for the thread of a loop through
which the shuttle on said one shuttle box is moved.
60
References (Zited in the ?le of this patent
UNITED STATES PATENTS
990,301
Schoenfeld ___________ __ Apr. 25, 1911
1,160,417
Knecht ______________ __ Nov. 16, ‘1915
32,055
Germany _____________ __ July 4, 1885
FOREIGN PATENTS
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