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Патент USA US3098470

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_July 23, 1963
L BONO
3,098,459
ATTACHMENT FOR THE FASTENING 0F BUTTONS WHICH CAN BE
APPLIED TO ZIG-ZAG SEWING MACHINES
Filed Aug. 12, 1960
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2 Sheets-Sheet 1
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Invenlz»
Luigi B0710
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A'ljir'h?y:
July 23, 1963‘
3,098,459
1.. BONO
ATTACHMENT FOR THE FASTENING OF BUTTONS WHICH CAN BE
APPLIED TO ZIG-ZAG SEWING MACHIN ES
Flled Aug
12, 1960
2 Sheets-Sheet 2
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United States Patent 0 ” rice
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1
Still another object of the invention is to provide a
novel three-jaw chuck for holding buttons to be fastened
3,098,459
in place utilizing a sewing machine, the three-jaw chuck
being of the self-centering type and including a pair of
pivotally mounted jaws which are urged together and a
ATTACHMENT FUR THE FASTENENG 0F BUT
TGNS WHICH CAN BE APPLIED T0 ZIG-ZAG
SEWING MAQHINES
Luigi Bone, Pavia, Italy, assignor to Necchi Societa
per Azioni, Pavia, Italy
Filed Aug. 12, 1960, Ser. No. 49,297
sliding jaw which is movable towards and away from the
two pivotally mounted jaws and between the two pivotally
mounted jaws, there further being provided means on said
Claims priority, application Italy Sept. 24, 1959
3 Claims. (Cl. l12-—114)
3£98A59
Patented July 23, 19€3
pivotally mounted jaw and the sliding jaw cooperating
10 to space the pivotally mounted jaws in accordance with
the position of the sliding jaw to effect the automatic
self-centering of the three jaws.
With the above and other objects in view that will
This invention relates in general to new and useful
improvements for zig-zag type sewing machines, and more
particularly relates to an attachment for use with a zig
hereinafter appear, the nature of the invention will be
zag sewing machine for the purpose of fastening buttons.
In the attachment of buttons with a sewing machine, 15 more clearly understood by reference to the following
detailed description, the appended claims and the several
it is necessary that the width of the zigzag be made to
views illustrated in the accompanying drawing.
correlate with the spacing of the holes in a button. Fur
In the drawing:
ther, when the but-ton is of the four-hole type, it is neces
sary that the button be supported in a manner so that
the sewing may be effected through a ?rst set of holes
in the button, after which the button is shifted to align
the second set of holes with the needle of the sewing
FIGURE 1 is a perspective view of a conventional
20 zig-zag type sewing machine with the button fastening
attachment in place thereon.
FIGURE 2 is an enlarged plan view of the button hold
ing attachment removed from the sewing machine and
machine for the further sewing of the button in place.
shows generally the details thereof.
It is to this end that the present invention is directed.
25
FIGURE 3 is an enlarged side elevational view of the
The primary object of this invention is to provide a
button
holding attachment.
novel attachment for a zig-zag sewing machine, the at
tachment being in the form of a support attachable to
the usual presser foot of the sewing machine, the support
carrying a jaw assembly for holding a button in place I
during the sewing thereof in place on fabric, and means
FIGURE 4 is a bottom plan view of the button hold
ing attachment and shows the speci?c mounting of the
jaws thereof.
FIGURE 5 is a front view of the button holding at
carried ‘by the support for adjusting the jaw assembly to
align the holes of the button with the needle of the sewing
machine.
tachment and shows the general arrangement of the jaws
for engaging and holding the button.
tening.
place by the jaws thereof.
FIGURE 6 is a transverse vertical sectional view taken
along the line 6-6 of FIGURE 2, and shows the speci?c
Another object of the invention is to provide a novel
manner
in which the stop plate is adjustably mounted with
attachment for a zig-zag sewing machine, the attachment
respect to the support and support plate for limiting the
being in the form of a button holder which is readily
movement of the support plate relative to the support.
securable to the usual presser bar of a sewing machine
FIGURE 7 is an elevational view of the stop plate and
and which carries a three-jaw jaw assembly which is self
centering when adjusted so as to automatically hold but 4,0 shows the general con?guration thereof.
FIGURE 8 is a plan view of the stop plate and shows
tons of various sizes.
the arrangement of the notches formed therein for limit
Another object of the invention is to provide a novel
ing the movement of the support plate.
attachment for sewing machines of the zig-zag type, the
FIGURE 9 is an elevational view of the device for
attachment being for the purpose of fastening buttons
utilizing the sewing machine and including a support re 45 holding the stop plate in an adjusted position.
FIGURE 10 is a plan view of the device of FIGURE 9.
removably secura'ble to the presser bar of the sewing ma
FIGURE 11 is a bottom View of a special cam unit for
chine, the presser bar carrying a support plate which is
use in conjunction with a zig-zag type sewing machine of
adjustable in the direction of teed of cloth with respect
the type having replaceable cams for controlling the
to the needle of the sewing machine, and the support
plate carrying a jaw assembly for holding a button, there 50 rnovment thereof.
FIGURE 12. is an elevational view of the cam unit of
also being provided means for adjusting the limits of
FIGURE 11.
movement of the support plate whereby the jaw assembly
FIGURE 13 is a plan view of the cam unit of FIGURE
may either be retained stationary to hold a button of the
11.
type having two holes only or for properly aligning the
FIGURE 14 is an enlarged fragmentary plan view of
two pairs of holes of buttons of different sizes in ac
the button holding device, and shows a button held in
cordance with the particular button being held for fas
FIGURE 15 is a detailed perspective view illustrating
A further object of the invention is to provide means
the adjustment of the support plate 16.
for engagement with a zig-zag type sewing machine for
properly holding a button in alignment with the needle 60 Referring now to the drawings in detail, it will be seen
that there is illustrated a conventional sewing machine
of the sewing machine, the button holding means being
of the zig-zag type. The sewing machine includes an
of a type for readily holding either a two-hole button or
arm 1 and a base 2 in which the usual needle bar 3 is
a four-hole button, in each instance holding the button
connected in a known manner for regulating the width of
in such a manner that when the zig-zag attachment of
the sewing machine is properly adjusted, the needle of 65 the zig-zag, the position of the needle and the feed of the
fabric. In the typical sewing machine shown by way of
the sewing machine will pass into and out of each two
example in FIGURE 1, the width of the zigzag is regu
holes of the button, irrespective of whether the button is
lated either by the position of a lever 4 which projects
of the two-hole or four-hole type, and there further being
provided means for easily adjusting the sewing machine 70 outwardly from the arm 1 or by the position of a cam
applied to ‘a rotating shaft 5 disposed in the upper part
so that the width of the zig-zag thereof is in accordance
of the arm I with the cam being engageable with a feeler
with the spacing of the holes of the but-ton which is be
6 to effect the desired control.
ing fastened.
appease
3
The position of the needle towards the left, the center
or the right is controlled either by the position of a lever
7, which lever is disposed adjacent the lever 4, or by
the position of a second cam (not shown) applied to the
the jaws 21, 24, 24 are always centered irrespective of
their positions. When the plate 24) is released, the spring
2-5, through its urging of the ‘levers 23 together, will also
rotating shaft 5 and engageable with the feeler 8, which
center of the jaws. The self-centering of the jaws 21, 24,
feeler 8 is so connected to the needle bar 3 to effect the
desired positioning thereof in a known manner.
slide the plate 20 so as to move the jaw 21 towards the
2d, of course, depends upon the shape of the cam sur
faces 26.
The regulation of the feed of the fabric is effected
In order that 'a button held by the jaw assembly formed
either by the operation of a stitch-regulator knob 9, car
by the jaws 21, 24, 24 may be properly positioned with
ried von the front part of the sewing machine, or by va cam 10 respect to the needle carried by the needle bar 3, there
(not shown) also carried by the rotating pin, but engaging
are provided means for adjusting the position of the sup
the feeler lit. The adjustment of the width of the zig
port plate 16 with respect to the body 13. This means
zag, of the position of the needle and the feed of the fabric
includes a stop plate 28 which is mounted for sliding
is achieved by known devices (not shown) which are
movement relative to the body 13 in a direction trans
controlled by the aforementioned levers or cams.
15 verse to the direction of movement of the support plate
Near the needle bar 3, there is located the usual presser
16. The body 13 is provided with upstanding ‘guides 29
bar 11 to which there is fastened the button holding at
along the opposite sides thereof between which the stop
tachment which is the subject of this invention. The
plate 28 is guided for movement. As is best shown in
button holding attachment includes a ?tting 12- which is
FIGURES 8 and 15, the stop plate 28 is provided with
removably connected to the presser bar 11 in the usual
oppositely directed notched cammed surfaces 30. These
manner and which has the lower portion thereof con
surfaces are selectively aligned with the pins 15 and func
nected to a support or body 13 which is arranged in a
tion as stops for the pins 15 to limit the shifting of the
plane parallel to the plane of the base 2.
support plate 16 relative to the body 13. The various
As is best illustrated in FIGURES 2 and 15, the body
portions of the notched or carnmed surfaces 30 ‘are identi
13 has an elongated slot 14 therein. The slot 14 is
?ed by the letter “O” and the letters “A” to “D.” The
oriented in the direction of feed of fabric by the sewing
distance between the cam surfaces 30 aligned with the
machine. Two pins 15 are secured to a support plate 16,
letter “(3” is equal to the spacing of the opposed surfaces
which support plate 16 underlies the body 13. The pins
of the pins 15 so as to prevent shifting of the support
15 are spaced apart and pass up through the slot 14. The
plate 16 with respect to the body 13. The spacing of
support plate 16 is provided with upstanding bent ends
opposed portions of the cam surfaces 30 decreases with
16’ which may be grasped for the purpose of shifting the
the minimum spacing being aligned with the area desig
support plate 16 for a reason to be described in detail
nated by the letter “D.” When the pins 15‘ are aligned
hereinafter. The pins 15 are provided with heads which
with the last-mentioned areas of the cam surfaces 39, a
protrude above the slot 144. An elastic plate 17 bears
maximum shifting of the support 16 is permitted.
against the underside of the heads of the pins 15 and
In order to facilitate the shifting of the stop plate 23,
engages the body 13 to retain the support plate 16 in an
the opposite ends thereof are provided with upstanding
adjusted position with respect to the body 13.
flanges 31 in the form of bent ends. The underside of
A pair of pins 18 project down from the underside of
the stop plate 23 is provided ‘with a number of grooves 32
the support plate 16. Also, two bent arms 19 extend
which extend generally in the direction of the slot 14.
down from opposite sides of the support plate 16 adjacent
The spacing and position of the grooves 32 correspond to
the forward end thereof, the arms 19‘ extending around
the designated portions of the cam or notched surfaces 39.
and under the support plate 16 in parallel relation thereto,
The stop plate 28 is retained in an adjusted position by a
as is best shown in FIGURE 5. An elongated plate 20‘,
teeth 33 projecting upwardly from a spring or elastic
as is best illustrated in FIGURES 4 and 15, underlies the
plate 34 which underlies the stop plate 28 and is seated in
support plate 16 and is held in engagement with the under
the support plate 16.
side thereof for sliding movement by the pins 18 and
The support plate 16 is provided with a plurality of
‘bent arms 19. It is to be noted that the movement of
pairs of pins 35, each of the pairs of pins eing designated
the plate 29 is limited to a sliding movement in the di
by a letter corresponding to one of the letters “A” to “D.”
rection of fabric feed of the sewing machine.
The spacing of the pins 35 in each pair varies in accord
The forward end of the plate 2.0 terminates in ‘a project
ance with the known spacing of buttons. Further, the
ing central jaw 21. The opposite end ‘of the plate 20
spacing of the pins of each pair of pins corresponds to the
amount of movement of the support plate '16 permitted
by the designated portion of the cam surfaces of the stop
the release or positioning of a button.
plate 28. Thus, it is merely necessary to place a button to
A pair of symmetrical levers 23 are pivotally mounted
be fastened on the various pairs of pins 35 to determine
on the pins 13 and project beyond the support plate 16,
the spacing of the holes in the button, and then to set the
the levers 23 terminating in a pair of jaws 24 which
stop plate 28 in accordance with the letter of designation
generally oppose each other and the central jaw 21. The
of the pair of pins. The {movement of the support plate
three jaws are disposed equally distant about a center.
16 and the two positions of the jaw assembly then corre
The three jaws 21, 24, 24 are normally urged to a 60 spond to the spacing of the holes in the buttons.
closed position by a spring 25, which spring 25 has a cen
It is to be understood that the pairs of pins 35, in lieu
tral portion thereof passing through the pins 18. The
of being carried by the support plate 16, may otherwise
ends of the spring 25 are connected to the levers 23 and
be mounted either on other parts of the sewing machine,
terminates in an upstanding ?ange 22 which may be
grasped for the purpose of shifting the jaw 21 to effect
normally urge the levers 23‘ together so as to also urge
the jaws 24 together.
The levers 23 are provided with opposed cam surfaces
26. The cam surfaces 26 are engaged by pins 27 depend
ing from the underside of the plate 20 adjacent the central
jaw 21. When the plate 20 is slid in the direction of the
arrow x in FIGURES 2, 4 and 15, the pins 27 engage the
cam surfaces 26 and urge the levers 23 apart, together
with the associated separation of the jaws 24. The move
ment of the jaws 24 with respect to the original centers
of the jaws is identical with the movement of the central
jaw 21 away from the center of the jaws. As a result,
or on a separate gauge device.
The present invention also includes a cam ‘unit 36 which
includes an upper part in the form of a handle 37 having
a central hole 33 for receiving the rotating shaft 5. As
is best illustrated in FIGURE 13, the upper surface of the
handle 37 is provided with suitable indicia which include
lines 49 cut therein. Adjacent each of the lines 49 is a
letter, from the letters “A” to “D.” The upper surface
of the arm 1 is provided with a reference line 39 with
which one of the lines 4t) may be aligned to properly
orientate the cam unit 36.
The lower portion of the cam unit 36 includes a central
8,098,459
5
cam 41, an upper cam 42 ‘and a lower cam 43.
The cams
41, 42 and 43 engage the feelers v6, 8 and 10, respectively.
The earns 42 and 4'3 are con?gurated to position the needle
so that it always enters into the left ‘hand hole of the but
ton to be sewn and the fabric feed is Zero.
On the other
6
needle, an attachment for fastening buttons comprising a
support for attachment to the presser bar, a jaw assembly,
and means adjustably mounting said jaw assembly on said
support for aligning buttonholes with the needle, said jaw
assembly mounting means including a support plate,
means mounting said support plate on said support for
sliding movement in the normal direction of cloth feed,
means carried by said support for restricting the move
cam unit 36. The various portions of the cam 41 are
ment of said support plate, said last mentioned means in
identi?ed ‘by the letters “a” to “d.” The various portions
cluding a stop plate, and means mounting said stop plate
of the cam 42 which bring about the proper positioning of 10
for
movement transversely of the direction of movement
the needle so as to enter into the left hand hole of the but
of
said
support plate, said stop plate being notched to
ton of the particular size of button are referred to by the
permit the desired variation of positions of said support
hand, the cam 41 is of 1a con?guration to provide for dif
ferent widths of zig-zag for the various positions of the
letters “a'” to “d'.”
‘It is also to be understood that in lieu of the cam unit
plate.
2. For use in combination with a sewing machine of the
36, the sewing machine may be provided with an indicia 15 zig-zag type and having means for controlling the width
plate (not shown) having suitable indicia thereon for
properly positioning the levers 4- and 7. Also, means will
of the zig-zag as well as the usual presser bar and needle,
an attachment for fastening buttons comprising a support
for attachment to the presser bar, a jaw assembly, and
be provided to assure that the feed of the sewing machine
will be turned off. The indicia will correspond to the
means adjustably mounting said jaw assembly on said
aforementioned indicia and will include letter representa 20 support for aligning buttonholes with the needle, said jaw
tions of the same type.
assembly mounting means including a support plate,
Operation
means mounting said support plate on said support for
In the use of the sewing machine with the attachment,
sliding movement in the normal direction of cloth feed,
which is the subject of this invention, in place, the fabric 25 means carried by said support for restricting the move
feed of the machine is ‘adjusted to be Zero, and the needle
ment of said support plate, said last mentioned means in
cluding a stop plate, means mounting said stop plate for
is displaced with respect to the center position thereof so
movement transversely of the direction of movement of
that it is received in the left hand "hole of the pair of holes
said support plate, said stop plate being notched to permit
in which stitching is to talce place. Also, the width of the
zig-zag is adjusted to the value corresponding to the par
the desired variation of positions of said support plate,
and means for correlating the position of said stop plate
ticular spacing of the two ‘holes of the button.
In the case ‘of a two-hole button, the stop plate 28 is
with the spacing of holes in a button.
3. For use in combination with a sewing machine of
adjusted to a position to bring the portion “0” thereof in
the zigzag type and having means for controlling the
alignment with the pins 15 to prevent movement of the
support plate 16. When the zigzag is properly adjusted, 35 width of the zig-zag as well as the usual presser bar and
needle, an attachment for fastening buttons comprising a
the necessary stitching may be effected.
support for attachment to the presser bar, a jaw assembly,
In the case of a four-hole button, the stop plate 28 is
and means adjustably mounting said jaw assembly on said
displaced to bring that portion of the cam surfaces 30
support for aligning buttonholes with the needle, said jaw
thereof into alignment with the pin 15 in accordance with
the spacing of the holes of the button. The support plate 40 assembly mounting means including a support plate,
means mounting said support plate on said support for
16 is then displaced to a maximum position, after which
sliding movement in the normal direction of cloth feed,
stitching is effected in a first pair of holes of the button.
means carried by said support for restricting the move
After the necessary stitching is effected, the support plate
ment of said support plate, said last mentioned means in
16 is then shifted to the opposite end of its travel, after
which the further stitching is effected.
45 cluding a stop plate, means mounting said stop plate for
movement transversely of the direction of movement of
After the button has been attached, it can be fastened
said support plate, said stop plate being notched to permit
more securely by making a few stitches in the left hand
the desired variation of positions of said support plate,
hole of the last pair of holes which has been sewn with
and sets of spacing determining pins projecting upwardly
zig-zag stitches. In order to do this, the zigzag width of
the sewing machine must be adjusted to zero.
50 from said support plate for determining the spacing of
holes in a button and facilitating the proper setting of said
It is to be understood that once the sewing machine and
the attachment therefor have been adjusted to receive a
stop plate.
particular button, other buttons may ‘be sewn in place
References Cited in the ?le of this patent
without further adjustment of the sewing machine.
From the foregoing, it will be seen that novel and ad 55
UNITED STATES PATENTS
vantageous construction has been ‘disclosed for attaining
616,173
Wing _______________ __ Dec. 20, 1898
the desired ends. However, it is to be understood that
820,089
Bouton ________________ __ May 8, 1906
numerous variations may be made within the scope of the
952,087
Trull _______________ __ ‘Mar. 15, 1910
invention.
1,009,701
Todaro ______________ __ Nov. 21, 1911
What is claimed as new:
60 1,681,948
Morris ______________ __ Aug. 28, 1928
1. For use in combination with a sewing machine of
2,377,037
Reece _______________ __ May 29, ‘1945
the zig-zag type and having means for controlling the
2,495,069‘
McCann _____________ __ Ian. 17, 1950
width of the zig-zag as well as the usual presser bar and
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