close

Вход

Забыли?

вход по аккаунту

?

Патент USA US3043263

код для вставки
July 10, 1962
o. WANK ETAL
3,043,253
zIGzAGANnBUTTONHOLESEWINGMACHINE
Filed May 22, 1957
l2 Sheets-Sheet 1
_
_
M
_fm/enters
_
/W MWA.,
July 10, 1962
3,043,253
o. wANK- ETAL
zIGzAG AND BUTToNHoLE SEWING MACHINE
Filed May 22, 1957
12 Sheets-Shree?I 2
È
>
ma
N
à@
ës@ë
mvSMV
SÉ
[menta/"5
July-10, 1962
o. WANK ETAL
3,043,253
ZIGZAG AND BUTTONHOLE SEWING MACHINE
Filed May 22, 1957
12 Sheets-Sheet 3
.gl-lullin»
_fm/enfans
elba/M
M
MQW@ www
July 1o, 1962
0. WANK ETAL
3,043,253
ZIGZAG AND BUTTONHOLE SEWING MACHINE
Filed May 22, 1957
12 Sheet's--Shee’fI 4
4 64-5)
28
73
24 20 ä ,8
/
fé
lâ
/
/5
77
,
"mi
2235
Hg 5 fw)
5g’. 25
.Im/@Hmm
July 1o, _ 1962
3,043,253
O. WANK ETAL.
ZIGZAG AND BUTTONHOLE SEWING MACHINE
Filed May 22, 1957
12 Sheets-Sheet 5
_fm/enfans’
@zag/M
_
and
l
July 1o, 19462
o. WANK ETAL
3,043,253
ZIGZAG AND BUTTONHOLE SEWING MACHINE
Filed May 22, 1957
F/g. 77
'
'
l2 Sheets-Shee’c 6
July 10, 1962
o. WANK ETAL
3,043,253
ZIGZAG AND BUTTONHOLE SEWING MACHINE
Filed May 22, 1957
12 Sheets-Sheet 7
,l/
f///////////
July 10, 1962
'
o. WANK ETAL
3,043,253
ZIGZAG AND BUTTONI-IOLE SEWING MACHINE
W
N
»J
/.
“j
`
July 10, 1962
o. WANK ETAL
3,043,253
zmzAG AND BUTToNHoLE SEWING MACHINE
Filed May 22, 1957
l2 Sheets-Sheet 9
Fig.26
Jnventors
July 1o, 1962
o. WANK Em.
Y
3,043,253
ZIGZAG AND BUTTONHOLE SEWING MACHINE
Filed May 22, 1957
12 Sheets-Sheet 10
.7n ven tors
mau/MJ?
W
/WQA @im
July 410, '1962
QVWANK ETAL ,
3,043,253
ZIGZAG AND BUTTONHOLE SEWING MACHINE
Filed May 22, 1957
l2, Sheets-Sheet 11
138 '
139
Jnven tors
July 10, 1962
'
o. WANK ETAL
3,043,253
ZIGZAG AND BUTTONHOLE SEWING MACHINE
Filed May 22, 1957
`
12 Sheets-Sheet 12
Figzy
231'
A
JÄ
Jnvem‘vors
W
„3,043,253
nited States
Patented July 10, 1962
1
2
FIG. 10 is va section along the line I-K of FIG. 13,
illustrating details of the stitching length control handle;
3,043,253
ZIGZAG ANI) BUTTÜNHOLE SEWING MACFDIE
ûtto Wank and Heinrich rI‘lieenhausen, Bielefeld, Ger
many, assignors, by mesne assignments, to Anker
FIGS. 1l and l2 illustrate two details of FIG. l0;
FIGS. 13 and 14 show a portion of the device for con
trolling the feed of the material, to control stitching
Phoenix Nahmaschinen A.G., Bielefeld, Germany, a
corporation of Germany
Filed May 22, 1957, Ser. No. 650,878
Claims priority, application Germany .lune 18, 1956
16 Claims. (Cl. i12-_158)
length;
FIGS. 15, 16, 17 illustrate a portion of the device for
producing -a buttonhole;
FIG. 18 shows the cover plate in a side view;
FIG. 19 illustrates the cover plate in cross section;
Our invention relates to a zigzag sewing machine with
FIGS. 20 and 2.1 illustrate the illuminating device;
FIGS. 22 and 23 show respective embroidery patterns;
devices for controlling, manually as well as automat
ica‘lly, the stitching width, the stitching area, and the
FIG. 24 is a top View of 4the stitch-control fork;
FIG. 25 is a front v-iew of the feed-control fork;
FIG. 26 is a side view of the material pusher;
stitching length.
It particularly relates to a machine which is capable
of doing many types of sewing. It can produce sewed
FIG. 27 is a front view of the automatic control means
patterns in great variety, including the automatic sewing
for the material feed;
FIG. 28 is a top view showing the coopera-tion of the
of buttonholes. Due to the fact that the stitching length
is controlled automatically, tu-rning «the material being
sewed is unnecessary because the material is automat- `
ically fed forward as well as in the reverse direction.
control cam for the feed with the feeler lever;
FIG. 29' is a side view of the components accommo
This is a particularly Vfavorable feature when making
dated within the head portion of the sewing machine;
FIG. 30 shows -a detail in top view of the. manual-
buttonholes.
Our invention has for its object to further improve
stitch-ing length `control handle;
Y FIG. 31 -is a detail of a pin that limits the adjusting
the above-mentioned control devices, particularly the
device for the automatic control of the stitching length.
travel of the handle of FIG. 30;
FIG. 32 is a detail, in top view, of the same pin;
Another object is to provide a setting means for ad
FIG. 33 is a detail, in top view, of a flanged guiding
justing the stitching length, which means also serves si
sleeve for the slider of FIG. 32;
multaneously for coupling or uncoupling the linkage em
FIG. 34 is a detail in section of the guiding sleeve.
ployed for the automatic cont-rol of fthe stitching length 30 The illustrated machine is suitable for straight sewing
to or from the manually operable handle used to govern
as Well as for decorative stitching such as applique, darn
stitching length.
ing or embroidery work. The basic mechanisms for pro
According to another feature of the invention, a set
ducing straight and zigzag stitches, feeding the material,
ting means which is manually adjustable into several re
and forming loop stitches are related to known sewing
speotive positions, and serves for controlling the stitch
machines. The controls for varying the width and loca
ing width, the stitching area and the stitching length, op
tion of the zigzag stitches are related to those disclosed in
erates to cause, when in its iirst posi-tion, the sewing of
German Patent 904,02() of 1954.
the iirst “caterpillar” of a buttonhole, when in its second
For amore detailed description of the basic mech
position, the sewing of the ñrst “cross bar,” when in its
anisms connected -to the needle bar reference may be
third position, 'the sewing of `the second caterpillar, in its 40 made to our copending U.S. »application Serial N0. 515,
fourth position, the sewing of the second cross bar, and
160, ñled June 13, 1955, now Patent No. 2,966,868,
when in its iifth position the setting means causes the
granted January 3, 1961. '
`
sewing-over of the buttonhole.
For clariñcation, at this point We define stitching
The above-mentioned and other specific objects and
features of the invention will be apparent from, and will
be described in, the following description of the preferred '
embodiment illustrated in «the drawings, in which:
FIG. 1 is a front view, the front plate being broken
away to show the components located within the hous 50
ins;
FIG. 2 is a -top view showing the same components,
part of the cover of the machine housing being broken
away;
FIG. 3 is a side view in section, illustrating details of
the manna-l stitching width and length control handles;
v
motion of the needle bar.
' (b) The stitching length is the ldistance between the
individual successive entrances of the needle into the
entrances into the material per unit of length of the
'
(d) The stitching density is equal to the stitching
length.
between manual and automatic control of stitching _
2, illustrating the manual lever for control of stitching
1
(a) The stitching width is the distance Vbetween the
needle entrance points alternately located to the right and
to the left of the middle line of the sewing pattern. This
lateral displacement is produced by the lateral swinging
motif of a sewing pattern.
FIG. 2, illustrating details of'a manual lever for selecting
FIG. 5 is a cross section along the line G--H in FIG.
density as follows:
material, projected onto the zero line.
(c) The motif frequency is the number of. the needle
FIG. 4 is a cross section along the line A-B shown in
width;
width, motif frequency, stitching length, and stitching
60
The sewing machine mechanism is housed in casing 52
under Ia tiltable cover I199.
Motor driven horizontal
shaft 49 turns bevel gears 48 and 47, causing the oscilla
rtion of a side stitch control fork 45 (FIG. 1). Fork 45
area;
_
FIG. 6 is a horizontal view partly in section of the
is connected to rod 232 which carries a swing frame 223
drive for the side-stitch control fork and the one-way 65 having a bore 222 in which the needle bar 221 recipro
coupling star drive for the cams;
cates (FIG. 24). The needle holder 220 is received by
FIG. 7 is a view of the mechanisms of FIG. 6 from
the needle bar 221 (FIGS. 24, 29) which, as stated, is
the opposite side;
axially displaceable in the bore 222 of the swing frame
FIG. 8 shows a section along the line C-I) of FIG. 2,
223. The swing frame y223 is rotatably joined with the
illustrating the manual stitching member control lever; 70 material presser rod 224. The presser rod 224 is axially
FIG. 9 -is a section along the line E--F of FIG. 2, of
displaceable in bearing bushings 227, 228 which Iare
the three cams conferring automatic operation;
mounted on housing 52 by means of screws 225 and 226.
3,043,253 .
4
At the presser-rod end facing the material pusher 167,
The slider 33 is displaceably mounted on the carrier plate
the rod carries fthe presser foot 229 which is Vsecured in
its adjusted position by means of >a set screw 230. A con
16 and has two forks 34, 35 cooperating each with a
slide block 34a, 35a. The slide blocks 34a, 35a are car
ried by respective screws 36a, 37a and are fastened by`
nuts 36' and 37 respectively. The fork of a fork lever 39
cooperates with aY pine 40 mounted on the slider 31. The
necting rod 232 engages abore 231 of the `swing frame
» 223. The connecting rod 232 is fastened in the bore
233 of the stitch-control fork 45 -by means of a screw
234.
~
`
fork lever 39 is firmly connected with the bearing pin 41
(FIG. l) which pin is journalled on the slider 33.A The
slide block 43 is journalled on Vthe previously mentioned
pin 44 (FIG. 24) whichis firmly connected with the
side-stitch control fork 45 (FIG. 24), still to be described.
'
In addition to vertical reciprocation, the needle bar
221 is »also capable ofthe lateral swinging movements
required for zigzag operation. These lateral movements
occurabout the axis ofthe presser-foot rod in a hori
zontal direction substantially parallel to the plane of il
The block 43 slides in a slot in the turnable guide or slide
way 42 (FIG. 1). The guide block 42 is firmly mounted
on bearing pin 41. The fork portion of the side-stitch
f lustration of FIG. 1, and they are accompanied by a cor- `
>responding swinging movement of the presser foot. This
is explained in the copending yapplication Serial No. 665,-’
555, tiled June :13, 1957.
The zigzag stitching width corresponds to the ampli
tude of oscillations transmitted by rod 232 to the swing
control fork 45 straddles the eccentric cam 46 joinedwith
the bevel gear 47 (FIGS. l, 3) whichmeshes with the
other bevel gear 48. The bevel gear 48 is fastened to the
previously mentioned horizontal drive shaft 49 that eX
tends through the horizontal arm structure of the sewing
frame. The stitching location'or area can be varied by
20 machine. The bevel gear 47 is rotatably mounted on the
shifting the center or zero point of these oscillations.
pin 50 of a bearing block 51 firmly connected with the
Dun'ng lmachine operation, a continuously rotating cam
machine housing 52.
46 (FIGS. 1 and 3) acts upon the glide faces of stitch
The slider 33 is provided with a sleeve >53 (FIG. l)
control fork 45 »to which rod 232 is connected. The fork
which cooperates with a fork 54 (FIG. 2) of an angular
Y has' a ñxed pivot pin 44 (FIG. 6) on which a slide block
43 (FIG. '1) is revolvable. The block 43 slides in the 25 lever 55. The lever 55 carries an arm 56 which forms
slideway of guide block 42 the angular position of which
the manually operable handle for controlling the stitching
is determinable manually Vor automatically, as described '
area. The angular lever 55 is ñrmly connected with a
sleeve 57 . (FIG. 5) which is revolvably mounted on
below.` Member 42 is displaceable angularly about its
yaxis and also linearly. By setting the block 42, yand con
another sleeve 58. The sleeve 5S is iivrmly joined with
sequently its slideway, at a neutral'angle, no swinging 30 the carrier plate 16. The slider r59 is displaceably
motion is transmitted to the needle bar and the lateral
mounted on the arm 56 and carries anose 60 which can
stitching width is zero. By'setting or turning the block
cooperate with the opening 61 of an arresting plate 62.
The arresting plate is fastened by screws on a stop plate
63. The stop plate 63 is fastened -by `means of two screws
64 on the‘ carrier plate 16. The slider 59 is provided
with a coupling pin 65 which can cooperate with an open
42, Vthe oscillations of fork 45 Vare caused to impart a
Vlateral component of motion to the swing lever, so that
the -needle'bar will oscillate about the axis ofthe presser
foot rod. Angular adjustment of member 42 is effected
ing ¿66"of a lever 67. Y Lever 67 is ñ-rmly joined with a
Veither manually by settinga width control knob 1 or
automatically by a cam operated linkage, Vas described
shaft 68 rotatablyl journalled in the sleeve 58. By dis
placing the slider 59, either the nose 60 can be placed in
automatic positioning of the pin 41 (FIG. l) on which 40 connection with the arresting plate 62, or the pin 65 can
below.
Stitching-area control is obtained by manual or '
guide block 42 is mounted.
,
The setting kno‘b 1 (FIG. 3), for controlling andV regu
lating stitching width, is provided with a pivotY shaft 2
_
be coupled with the lever 67. ,
»
rFirmly connected with the Vbevel gear 47 is another
eccentric cam 69 (FIG. 6) cooperating with an .arm 70
of a fork lever 71. yThe varm 70V of lever 71`is biased
intoV which a ball-head screw 5 is screwed. The screw 45 toward the cam by a helical spring 72 (see also FIGS..7
journalled in a .bushing 3. The shaft 2 carries a crank V4
carries a 'ball 6 which forms a universal joint together
with a spherical head 7 of a link 8. The other head 9
(FIG. 4) of linking rod 8 cooperates with a ball 10 of a
shouldered pivot pin 11. The pivot pin 11 is riveted into
and 8). The lever 71 carries the sleeve 73 rotatably
mountedon a pin 74. Pin 74 is riveted into an ar-in 75
(FIG. 2) which carries a pivot'pin 76 mounted on the
carrier plate 16. A handle 77 is secured for pivotal
Vthe lever 12 Whose pivot shaft 13 is journalled in the 50 motion on pin 76 by means of nuts 78. The handle 77
is madeV of resilient material and has a nose 79 (FIGS.
bushing 14. 'Ihe bushing'14 is joined by screws (not
2, 8) entering into a guide slot 80 of a slide fbridge 81
shown) with a carrier plate 16. Mounted on bushing
(FIGS. 2, 8).- The bridge 81 is secured on the can-ier
14 and rotatable relative thereto is a sleeve 15 firmly
plate 16 by means of screws 82. The handle 77 serves
r`connected with a'lever 17. Lever 17 is operated by a pull
rod 109 whichin turn fis operated by follower lever 107 55 for controlling the motif frequency and also, when in its
left outermost position according to the dotted outline
which follows cam disk 103. Cam disk 103 automati
in FIG. 2, for lifting the arm 70 of the fork lever 71
' cally controls'stitch width. Riveted into lever 17 is a
away from the eccentric cam 69 (see also FIG. 6). The
shouldered pin 18 which has an upwardly opening slot
lifting of the arm 70 is brought about by the fact that a
19 (FIG. 2) receiving a pawl 20 (see also FIG. l) which
is Vrotatably pivoted at 21. The Vlevers 12 and 17 have 60 lateral lug 83 (FIG. 7) of an angle pieceV 84'is placed in
contact with .thel fork lever 71. The angle piece 84 is
respective openings 22 and 23 which can cooperate with
connected by a screw :85 with thepinV 76 and’has an
the pawl as will be more fully described below.V The
elongated slot _86. A screw 87 cooperates Iwith the elon
,pawl 20 is controlled by a lever 24 for coupling the
gated slot'86 and is connected to the arm 75. The screw
stitching-width control means. The arm v25 of lever 2'4
can act upon the extension 26, or upon the slanting front 65 and slot junction 86, 87 serves for the compensation of
manufacturing tolerances. This 4permitsthe'placement
' portion of the pawl 20; see FIG. 4. The lever 24 couples
of the lug 83 accurately into touch with the fork lever 7l.
and uncouples the automatically operated stitching-width
The fork of lever 71 (FIGS. 6 to 9) straddles a'roller 88
control rod 1,09 to the linkages 12-413-'23 Lever 24 is
journalled on a pin 89 which> is'riveted into a plate 90.
pivotally mounted on the carrier plate 16 by means of a
The plate 90 is fastened by screws to a coupling star 91
pivot pin 27 screwed into the platenló. The plate 16 is
rotatably mounted on the pin 92 of a couplingportion
joined with the> housing 52 by means of screws 16a.
93. The coupling star 91 is secured by means of a screw
Firmly held by screws on the shaft k13 is the arm 2S
94 screwed into the coupling portion 93. The connection
(FIG. 2) whose crank pin 29 tits in or enters into a fork
between the coupling portion 93 and the coupling star
30. The fork 30 forms part of a slider 31 which is dis'
placeably guided in the slideway 32 of another slider 33. 75 91 is elfected through rollers 95 so as to form a roller
,5
3,043,253'
6
coupling of a type well known as such. The coupling
portion 93 is journalled for rotation in a sleeve 97 (FIG.
9). The journal pin 96 of the coupling portion turns
in the sleeve. The sleeve 97 has a shoulder 98 fastened
^by screws to the carrier plate '16. The shoulder or
sure or compression spring 153 which is braced against
the arm 145. Another extension 154 of pawl 150 can co
operate with a slot or groove 155 of `a handle 156. The
' handle 156, made of plastic material, is injection-molded
together with a shaft 157 which serves for controlling the
ñange member 98 is similar to the coupling star 91, being
-feed of the material being sewed. The shaft 157 of
handle 156 is journalled in the sleeve 147. Clamping
operate with the coupling portion 93 in the same manner
crank 158 (FIGS. l and 25) is connected to Ithe feed
controling slideway 160 through a link 159. The con-`
as the coupling just described. The parts 93, 98 and 99
troller slideway 160, which is rotatably mounted on the
operate as an over-run clutch which prevents a reverse
_' rotation of the coupling portion 93. Mounted on another
housing by means of a pivot pin 160a (FIG. 25), co
pin 100 of the coupling portion 93 is a spacer ring 101
operates with a slider 161 which slides therein and is
which also carries an entrainer key 102 (FIG. 9) for en
rotatably mounted on the feed control fork 162 (FIG. 1).
The feed control fork 162 is pivotally connected With
training three cam disks 103, 104, 105 (FIGS. 1, 2, 9).
The middle cam disk 103 cooperates with the nose 106 15 a swing lever or crank 163 fastened by clamping upon
of a feeler or cam follower lever 107 (FIGS. l and 3)
a shaft 164 (FIG. 26). Located above the shaft 164
for the control of the stitching width. The follower
is the known feed crank 165 which acts upon the ma
terial-feeding pusher 167 through -a pusher carrier 166.
lever is connected With a bushing 108 (FIG. 3) and is
linked to a pull rod 109 (FIG. l) -at 110. The other
The feeder fork 162 is actuated -by an eccentric cam 168
end of pull rod 109 is connected at 111 to the lever 17 20 mounted on the arm shaft-49 of the machine.
t
(FIG. 4). The pull rod 109 is acted upon by a spring
As mentioned, the extension 154 (FIG. 10) of paw
112 (FIG. l) which is connected to a pin 113 riveted
150 can cooperate, at the proper time, with a nut or
into plate 16.A Lever 17 mounts pawl 20 which turns lever
groove or slot 155 of the handle 156 when the vmaterial
12 and pin 13. Pin 13 moves lever 28 and slider 31.
pusher 167 is to be controlled automatically. The con
Fork 39 is thereby caused to turn pin 41, which turns
trol of the pawl 150 and hence of its projection 154 is
guide block 42.
effected by an opening 169 (FIGS. l0, 13, 14 and 30 to
The top cam disk 104 cooperates with the nose 114
34) in the disk 170 of an adjusting member 171. This
(FIG. l) of a feeler or cam 'follower lever 115 (FIGS.
member serves to determine the swinging amplitude of
2 and 3) for stitching-area control. The feeler lever 115
the adjusting means 156 for controlling the‘ feed yand for
is connected to the shaft 122. Joined with the feeler lever 30 coupling the automatic control of the feed. When set
115 `at 117 is a linking rod 116 (FIGS. 2 and 3) Whose
ting the adjusting member 171 clockwise from the posi
other end is linked at 118 (FIG. 5) to the lever 67. A
tion “automatic” to the position “manua1,” the extension
spring 119 acts upon the linking rod 116. Spring 119 is
154 of pawl 150 is moved counter-clockwise -about its
connected at 120 (FIG. l) with the pin 121 (FIG. 2)
pivot 151 by means of the incline 172 and is thus moved
also designed as a coupling star, and its rollers 99 co
Manual control of material feed, ‘and therefore of
35 out of the nut or slot or groove 155 of the manual con
trol member 156. As soon as the incline 172 rims upon
stitching length, is obtained by turning shaft 157 (FIG.
the pawl, the automatic control of the material pusher
riveted into the plate 16.
,
l0) by means of handle 156. Shaft 157 and handle 156
4.by cam_ disk 105 and the feeler lever 124 is eliminated
also turn during automatic feed `and stitching length con
because the motion of lever 124 can ‘be communicated
40 to linkage 175, 158, 159, 160 only when pawl extension
trol.
The lowermost cam disk 105 (FIG. 27) acts upon the
154 is not moved out of the slot 155 of handle 156.
nose of a feeler lever 124 (FIGS. 2 and 3) for automatic
'I'he disk 170 is adjustably connected to and mounted
control of the stitching length. Feeler lever 124 is con
on a sleeve 173 which is journalled on the sleeve 147
nected to -a sleeve 125 (FIG. 3) `and is provided with
(FIG. l0). Sleeve 173 is provided with three notches
a lug 126 which is acted upon by `a set screw 129 (FIGS. 45 174. The notches 174 act' upon a spring 175 in such a
3 and 28) in threaded engagement with and mounted on
manner that in the “manua” position of disk 170, or
a lateral lug 127 of the lever 128. The lever 128 is con
rather of the control means 171 (see particularly FIG.
nected with a sleeve 130. As apparent from FIG. 3, the
14), the spring 175 occupies the position shown in FIG.
shaft 122 is received in the sleeves 108 and 130, the
l2. The spring 175 is then active, that is, exerting pres,
sleeves 108 and 130 being journalled in a bushing 131 50 sure against the handle 156, and thus imposing a braking
stationarily carried by plate 16. The sleeve 125 of lever
action upon the handle 156. This braking action is neces-_
124 is journalled on a projection 132 of the bushing 131.
sary in order to make the manual setting self-braking,
A locking disk 133 connected with va shaft 122 fastens
whereas in the position of the spring shown in FIG. 1l,
the described bearing components together.
this self-braking is eliminated. Consequently, when the
The lever 128 has a bent .portion 134 (FIGS. 1, 3 and 55 material pusher is automatically controlled, the manual
28) provided with a pivot pin 135. Pin 135 is joined
member 156 which also participates in the automatic
with a linking means 136 which comprises a Wire struc
working movement, is subjected to smallest possible fric
ture that forms an eye about the pivot pin. 'I'he other
tion. The setting disk 170 is further provided with an
end of linking rod or wire 136 is linked to a pivot pin
opening 176 having a concentric cam surface and an
137 (FIG. l) riveted into -an angular lever 138. The 60 ascending cam surface portion. The cam opening 176
angular lever 138 is rotatably mounted on a pin 139
acts upon a pin 177 secured to a slider 178. The slider
(FIGS. l, 3 and 27) riveted into an vangle piece 140. An
178 is guided in a slot 179 (FIGS. 14 and 33) of the
gle piece 140 is fastened (FIG. 3) by means of screws to
frange of stationary sleeve 14'7. The Vfront end of the
the above-described bearing block 51. An extension 141
pin 177 enters into the opening or groove 180 in the
of the angular lever 138 is joined at 142 (FIGS. 1 and 65 handle 156. Groove 180 tapers, being widest near the
27) with a link 143 whose other end is linked at 144 to
center, and has on both sides respective stops 180:1. As
an arm 145. The arm 145 is biased by means of a
a result, the pin 177 operates to limit the adjusting travel
spring 145a connected to angle piece 140. A bushing
of the handle 156. When handle 171 is turned so as to
146 carried by arm 145 (FIG. 10) is journalled on a
ilanged sleeve 147 stationarily mounted in the housing 70 cause cam opening 176 to push the pin 177 to its outer
most radial position, the indicating pointer 181 registers
52. The shape of member 147 is shown in FIGS. 33,
with the ciper 0 of the scale 182. In this position the
34. The arm 145 carries a pin 148 which has a slit 149
handle 156 is arrested. However, when the pin 177 is
(FIG. l) for the accommodation of a pawl 150 (FIG.
pushed into its'innermost radial position, then the handle
l0). The pawl 150 is rotatably mounted on pin 148 at
151 and carries an extension 152 acted upon by a pres 75 156 can swing or be swung over the total range of the
v
3,043,253
.
Vcam opening 176 when the handle 171 is turned to auto
matic operation, as Vshown in FIG. 13.
13
Y
The described devices for performing the individual
sewing operations are so arranged that they are readily
and conveniently accessible. For-this purpose, the hous
ing 52, particularly the arm portion of the housing, is pro
vided with a cap 199 (FIGS. 1, 18, 19) which can be
turned about hinges 200, 201. The design of hinge 201
indicating scale. The pin is in the concentric part of the
j
To change the sewing technique or performance, the
control of the stitching width, the stitching area, and the
feed is altered. To do this the cam disks 103 to 105
are replaced by cam disks of different shapes. It is Íìrst
is such that lthe cover is biased by a spring 202 in the
` closed as well as in the open position, the spring acting
necessary to place the feeler levers 107, 115 and 124 in
Y inactive position, in which their respective noses 106, 114
to definitely hold the Ycover in each of these -respective
and 123> are no longer located within the range of the 10 positions. In the closed position of the cover the spring
282 acts on the top cam disk 104 in such a manner that
cam disks. The feeler levers 107, 115 and 124 are pro
a pressure piece 203 (FIGS. 1, 19) consisting of soft ma
terial is pressed against the cam disk 104 and thereby
vided with extensions 183, 184 and 185 (FÍG. 2) re
spectively which are acted upon by a releasing lever 187
which is provided with a handle 186 (FIGS. 1, 2, 3),
prevents an'inadvertent lifting of the cam disks 103 to
the. action being such that the cam 188 of the releasing 15 105. The cover .199 extends over the entire arm struc
ture of the machine up to but not including the sewing
lever 187 acts upon the extension 185 of the feeler lever
124 for the feed control, whereas the cam portion 189
connected with the releasing lever 187 acts upon the pro
head.
`
Disposed in the sewing headis illuminating device 204
(FIGS. 1, 2, 20, 21) which is pivoted at 206 (FIG. 2l)
jection 183 of the feeler- lever 107 for the stitching
on the front plate 205 to permit swinging as shown in
FIG. 20.
'
the releasing lever 187 acts upon the projection 184 of
As is >apparent from FIGS. 2 and 3, the yarn spools 207
the feeler lever 115 for controlling the stitching area.
(FIGS. 2, 3) are disposed on the rear portion of the
The cam elements 189, 190 are adjustably connected
housing 52. The thread 208 (FIG. 2) is guided along the
with the releasing leverV 187 to compensate for .manu
facturing tolerances. The releasing lever 187 is con 25 rear portion of the housing to an Yeye 209 connected with
the hinge 200. Guide pins 210 (see also FIG. l) which
nected with a shaft 191 (FIG. 3) journalled in the above
` width; and the cam-portion 190 likewise connected with
mentioned carrier plate 116.
'
simultaneously connect a cover plate 211 with the front
'
plate 205, guide the thread to a pre-tensioning part 212.
As mentioned above, certain sewing patterns require
i A exchanging the cam disks.
The tensioning part 212 as well as the part 213 form part
~As an instance, `in order to
30 of the cover plate 211 which therefore is additionally
produce a buttonhole on linen or lingerie, a special set
joined to the housing 52. The thread 208 further passes
through the thread tensioner to the guide roller 215 pro
vided with a return spring 216, thence through'the thread
guiding stirrup 217 to the thread lever 218, from there to
the thread eye 219 (FIG. 1) and to the needle holder-'2241
of camdisks is provided, comprising »the threeV individual
'cam disks 192,193, 19dl (FiGS. 15, 16). Middle cam
disk 192 serves to control the stitching. width, vvtop cam
disk 193 controls the stitching area, and‘ cam disk 194
controls the 'feed of the material. The three cam disks
on the needle bar 221. The parts 217 and 219 are like
Wise connected with the front plate 205.- '
are rigidly connected with a knob 195 (FEGS.v l5, 16, 17)
which may be made of plastic material. The assembled
unit'forms a rotary switch. vThe knob 195, and alsothe
As just described and particularly shown in FIGS. 1
and 2, the front plate 205 serves to receive, orV carry
cam disks 192, 193, 194, have a bore 196 in the longi 40, the illuminating device 284 andVr also to receive the cover
n tudinal wall of which is a’groove 197.
The groove 197 Y
(FIG. 16) coacts with the above-described entrainer key
102 (FIGS. 2, 9). The knob 195 carries a number of
plate 211 which not only provides aguide for the thread
but also serves for lateral limitation of the cover 199
symbols representing the sewing operations requiredl toY
when in the open position, since the hinge 200 prevents
the pulling 011 of open cover 199 toward the left, with
produce the buttonhole. The symbol 1 designates the 45 reference to the illustration in FIG. l.
first “caterpillan” the symbol 2 the tirstf‘cross bar,” the
The operation of the above-described apparatus is as
symbol 3 the second “caterpillar,” the symbol 4 the sec
follows:
.
Y
ond “cross bar,” and the symbol 5 the sewing-over of the
As previously explained, the setting member 1 serves
buttonhole. The fact that the above-described roller
for manually controlling and regulating the stitching
vclutch> can be turned in only one direction insures that 50 width, whereas the setting member 5_6 serves for manually
ï 4‘each ofthe symbols 1 Vto 5 will indicate the progress of
controlling the stitching area. The automatic control of Y
' Vthe work in proper sequence. In order to make certain
the stitching area and the stitching width, respectively,
that theV person sewing can alwayscom'mence'with the
is accomplished by'means of the cam disks 103 and 104
symbol 1,"a mark 198 (FIG. 17) is provided which is
which act upon the above-described associated devices
located on the carrier plate V16. To permit the accurate
through the ‘respective follower levers-107, and 115, and
setting of the adjusting knob 195 inthe particular or re
thefrespective Vlinks 1709 and 116. ‘
f n ..
» quired setting, the feed control cam Vdisk 194 (FIG. ,728)
The coupling lever 24 when vin one position permits
is designed in such a manner that the associatedfeeler'.
manual control of the stitching width by member 17 and
lever 124, aside from its operation as' a feed control
when. in theother position permits' the automatic con
means, is also effective as an arresting lever. VThe'disk 60 trol of the stitching width by action offits arm 25 (FIGS.
194 is provided with iive peripheral indentations for this
1, 2, *4). upon the pawl 20. As already described, pawl
20 serves to couple the lever 12 (FIG. 4) with the Ylever
17. The embroidery pattern incorporated in the cam
When producing buttonholes, the handle> 77 remains
in the Vcl'ot-md-clash position, because the knob 195, `and '
shape of cam disk 103 is thus transmitted through the
thus also the control cams 192, 193, and 194, are turned 65 link 109 to the oscillating needle rod 221 and thus upon
manually >from position 1 tovposition -5.
'
the material being sewed.
The significance of position 5 of knob 195 is as fol
The automatic control'of the stitching area is brought
lows: For sewing over the buttonhole in this position, the
about by sliding the handle 59 upon the arm 56 into the
position illustrated in FIG. 5 so that a coupling is effected
' stitching-width control is setto “zero’r’iby means of the
through pin'65 between’the lever y67 and the arm 56.
_ control'cam 192;,the stitching area is set to the position
Since the link 116 is pivotally joined with the lever 67 and,
“right” by means'of the control cam 193; and the mate
rial feed in the sewing direction is set to a very small
as already described, is controlled- by the cam disk 104,
purposel
.
Y
.
Y
.
Y
` Y value by means ofthe control cam 194. As soon as a few
. forward -stitches are sewed, thev thread is cut otï.
This
there now occurs an automatic turning of arm 56. The
fork 54 of arm 56 acts upon sleeve 53 to displace the
makes certain that'thers'eam cannot be easily pulled open. . 75 »slider 33. This determines the position of the pivot of
3,043,253
»
Si
slideway member 42, which is fixed on pin 41 journalled
upon slider 33, for the purpose of displacing the needle
rod in accordance with the adjusted stitching area.
As described, the setting means 156 (FIGS. 3 `and l0)
’essential features of the invention `and within the Scope
of the claims annexed hereto.
We claim:
serves for controlling the feed, as far as the drive of
the link 143 upon the arm 145. When the manually set
connection with the handle 156. When the arm 145 is
being driven, the manual setting means 156 is likewise
-
l. A zigzag sewing machine having a lengthwise re
the material pusher 167 by hand is concerned.
The automatic control of the feed, however, is effected
-by having the cam disk 165 act by means of the feeler
lever 124 and through the set screw 129, upon the lever
128, the link 136 upon the angular lever 138, and through 10
means 171 is in the position “automa-tic” (see particu
larly FIGS. l() and 13) then the pawl 150 is placed in
11i
trated and described herein, without departing from the
ciprocating needle bar and provided with cooperating
manual and automatic means to control stitching length,
the manual means moving during engagement of and being
actuated by the automatic stitching length control means,
said manual means to control the stitching length includ
ing a manually operated handle reciprocable through a
predetermined range of movement in accordance with the
desired stitching length, manual adjusting means con
nected to said handle and arranged so that the relative
position of said adjusting means determines said range of
driven so that its shaft 157 and the crank arm 158 act
movement of said handle, coupling elements operable by
through the link 159 to automatically control the feed
slideway member 1643. During rotation of the horizontal
drive shaft 49, the cam 148 imparts lateral deflections to
the feed-control fork .162. Depending upon the position
of the slideway member 160, the feed-control fork 162,
constrained by its guidance in the block 161, then yields
either in its longitudinal direction, or in opposition there
to. The resulting constrainedly controlled stroke move
- said manual adjusting means for coupling and uncoupling
said handle to and from said automatic means.
-2. A zigzag sewing machine having a lengthwise re
ciprocating needle bar, comprising a material-feeding l
pusher for pushing the material to-be sewed through the
machine at a controllable predetermined rate to thus de
termine the stitching length, drive means including cam
actuated automatic means for actuating said material-v l
ment is transmitted by crank 163 and shaft 164 to the 25 feeding pusher, variable linking means connecting said
feed control crank 165 which acts through the pusher
drive means with said pusher, and control means for
carrier 166 on the material pusher 167.
varying the mutual position and relationship of said link
As mentioned above, the sewing machine is also suit
ing means to thus control the stitching length, said con
able for producing buttonholes in shirts, lingerie and
trol means comprising manual stitching length control
other washable goods. For this purpose, the set of three 30 means cooperating with said automatic means to control
cam disks 103, 194, 105 is exchanged for three other cam
the stitching length, said manual means to control the
disks 192, 193, 194, and the handle 77 for controlling
stitching length including a manually operable pivoted
the motif frequency is shifted into its uttermost left-hand
handle reciprocable through a predetermined range of
position according to FIG. 2 which represents the switch
movement in accordance with the desired stitching length,
» ing-off position for the cam-disk drive; see the dot-and 35 a manual adjusting plate pivoted about the same pivot axis
dash position of handle 77. After inserting the last
as said handle, said adjusting plate being manually posi
mentioned three cam disks and turning the knob 195
tionable to manual and automatic positions, respectively,
counter-clockwise, the sewing operation commences with
for selecting automatic and manual control of stitching
the symbol l and produces at first the iirst “caterpillar”
length, said adjusting plate being provided with a cam
of the buttonhole. Thereafter, upon turning into the 40 surface, limiting means cooperating with said cam sur
symbol position 2, the first “cross bar” is produced.
face of said adjusting plate and positionable thereby to
Thereafter, in the symbol position 3, the second cater
pillar, then in symbol position 4 the second `cross bar, and
ultimately, in the symbol position 5, the -seWing-over
of the button hole is carried out.
As already described, the handle 77 acts upon the con
trol of the motif frequency for the motif of an embroi
dery pattern. A scale (not illustrated) on the cover 199
limit the swing of said reciprocable handle, and coupling
means operable by said plate to couple said handle to
said automatic stitching length control means when said
adjusting plate is selectively positioned in said automatic
position of said plate and operable to uncouple said
handle from said automatic means and render the latter
inoperative in said manual position of said plate.
3. A sewing machine according to claim 2,y said limit
permits setting the handle 77 upon the desired motif fre
quency. When turning the handle 77, the pivot point of 50 ing means comprising radially movable slide means asso
the fork lever 71 is changed. Such a displacement has
ciated with and operablyppositionable by said cam sur
the effect of changing the effective leverage ratio of the
face offsaid adjusting plate to limit the swing of said re
fork lever 71, which results in> a correspondingly different
ciprocable handle when said plate is selectively positioned
number of stitches. When the cam disk 69 is being
in said manual position for manual stitching length con
driven, the fork lever 71 swings clockwise and, acting
trol, said handle being provided with a groove and said
through the coupling star 91 and the coupling portion 93,
slide means being provided with a pin engageable in’said
groove, said coupling means including a spring-biased
causes a partial rotary movement of the cam disks 103
to 165.
pivoted device operable to connect and disconnect said
By providing a device according to the invention for
handle to and from said automatic means for controlling
controlling the motif frequency, there is >afforded the 60 the stitching length, said plate being provided with a sur
possibility that the motif or design of the embroidery
pattern according to FIGS. 22 and 23 can be varied in
such a manner that smaller and larger embroidery motifs
face formed so as to Aturn said pivoted device on its pivot
, -to uncouple said coupling means and thus disconnect said
automatic stitching length control means from said handle
when said adjusting plate is in said manual position.
with respectively different motif frequency. The stitch 65 4. A sewing machine according to claim 2, said con
trol means including rotatable spring-biased pawl means
ing density is controlled, as -is known as such, by the
can be produced with one and the same stitch density but
control means 156 for controlling the feed, whereas the
handle 77 for controlling the motif frequency acts con
trollingly upon the rotating speed of the cam disks 103
to operatively connect the handle to said automatic means
study of this disclosure, that zigzag sewing machine de
pawl means to disconnect 'said pawl means from said re
for controlling the stitching length, said handle being pro
vided withla recess for engaging said pawl means, said
70 plate being provided with a surface positionable to turn
to 105.
said pawl -means against the spring bias direction of said
It will be obvious to those skilled in the art, upon a
cess when said adjusting plate is turned to manual posi
tion, and thus to disconnect said handle from said auto
spect to various details and hence may be embodied in
apparatus other than the embodiment particularly illus 75 matic means for controlling the stitching length.
vices according to the invention can be modified with re
3,043,253
il
manual setting means operably connected to'said feeding
pusher to manually control the rate of feed of the feed
ing pusher, adjusting means for adjusting the limit of
the stitching length, and coupling means actuatable by
said setting means for coupling and uncoupling said set
,5. A zigzag sewing machine havin-ga lengthwise re
' ciprocating needle bar, comprising a material-feeding
pusher for pushing the material to be sewed through
the machine at a controllable predetermined rate to thus
determine the stitching length, drive means including cam
-actuated automatic means for actuating said material
ting means to »and from said drive means.
drive means with said pusher, and control means for
8. The apparatus defined in claim 7, including three
individual cams in said automatic devices for controlling
varying the mutual position and relationship of said link
ing means to thus control the stitching length, said controll
the stitching length, the stitching width and stitching area,
respectively, three individual pivoted cam follower devices
means comprising manual stitching length control means
K cooperating with said automatic means to control the
for the stitching width and stitching area automatic con
matic’control cams, and a common releasing lever having
feeding pusher, variable linking means connecting said
stitching length, said manual means to control the stitch
manually adjustable cam surfaces which bear against and
ing-length including a manually operable pivoted handle
pivot all three cam follower devices away from the three
reciprocable through a predetermined range of move
mentin accordance with the desired stitching length, a
automatic control cams.
'
> manual adjusting plate mounted coaxially with said han
9. rA sewing machine capable of straight-line and zig
zag sewing and capable of adjustment to make button
jdle, said plate being manually positionable for select
holes automatically, said machine having a material-feed
ing automatic and manualv control of stitching length
ing pusher, a lengthwise reciprocating needle` bar and
and having limit means to determine, in the manual set
manual and individual automatic cam operated means
ting position of said plate, the range of movement of
to move the needle bar laterally and to limit the ampli
said handle for manually setting the stitching length de
tude of such movement as desired so as to control the
sired, a position indicator mounted adjacent to and co- >
stitching width and stitching area, and manual and auto
matic cam operated means to control the feed of the
operating with said plate for indicating the relative rotary
position thereof, coupling elements positionable by-said
material being sewed to vcontrol stitching length, said
manual means being provided with a handle, coupling
elements operable by said manual adjusting means for
coupling and uncoupling said handle to and from said
adjusting plate to couple said handle to said automatic
. means for controlling'the stitching length and to simul
taneously uncouple the handlel from said adjusting plate,
and a spring located between said plate and said handle
automatic `means, each of Said three automaticV means
to impose a frictional braking action upon said handle 30 being provided with`cams andrcam followers, linkage
means connecting respective onesof said cam followers
only when said plate is set for manual operation of
stitching length by said handle.
»
Y Y
with said needle bar land with said material pusher,
knob setting means assembling alltthree of'said cams
6. A'zigzag sewing machine having a lengthwise re
ciprocating needle '-bar, comprising a `material-feeding
into a rigid unit for automatic sewing of buttonholes,
pusher for pushing the material to be sewed throughV the 35 motor driven means including unidirectional clutch means
to turn all three of'said cams together in one direction
machine `at a _controllable predetermined rate to thus
only, means for engaging and disengaging said clutch
` Y determine'the stitching length, >drive means including cam
actuated` automatic means for actuating said material-
means, said three cams being selectively rotatable manu
feeding pusher, variable Vlinking means connectingsaid ` ally and automatically depending upon the disposition
drive means with rsaid pusher, and control means forV 40 of said clutch engaging-means, said knob >of the setting
varying themutual position and relationship of said link
means having indicator symbols thereon for the sequential
`ing means to thus control the stitching length, individual
manual and cam-actuated automatic means for moving
stages of Voperations followed in sewing a buttonhole, and
~-a` stationary marker on the machine cooperating with
said needle bar laterally'to thus control'the stitching
said symbols to indicate Ithe placement ofthe setting
width and stitching area, and cooperating manual and 45 means in position to initiate the desired stage of opera
cam-actuated automatic means to control stitching length,
said manual means for controlling' the Vstitching Ylength
10., A sewing machine capable of straight-line andzig
including a manually operable pivoted handle reciproca
zag sewing and of adjustment yto make buttonholes auto
Y
tion.
'
ble through a predeterminedrange of movement in ac
cordance with the desired stitching length, a manual ad
matically, said machine having a material-feeding pusher,
justing plate mounted coaxially with said handle, said
manual means and individual automatic cam operated
Y plate being manually positionable- for selecting automatic
and manual control of stitching length and having limit ~
means to determine, in the manual setting.k position of
said plate, the'range of movementl of said handle for. 55
meansto move lthe needle bar laterally and to limit
Vmanually setting the »stitching length desired, coupling
elements positionable by said adjusting plate to couple
of the material which is being sewed to control stitch
ing length,` said manual means being provided with a
said handle to said automaticV means for controlling the
handle, coupling elements operable by Vsaid manual ad
justing means for coupling land uncoupling said handleto
stitching length and to simultaneously uncouple the han
dle from said'adjusting plate, said linking means and
' cam-'actuated automatic means to control stitching length
' including a cam, means for driving said cam from said
a lengthwise reciprocating .needle bar and individual
60
the amplitude of such movement asY desired so as to
control the stitching width and’stitching area,v and manual
and automatic cam operated means to control the feed
and from said automatic means, each of said three auto
matic means being provided with cams‘aud cam fol
lowers, linkage meansy connecting respective ones of
Vdrive means, a pivotally mounted cam follower, a mo
said ca_m followers with said needle bar «and with said
tion-transmitting element, said motion-transmittingele
material pusher, setting means assembling all three of
ment-carrying accessible set-screw abutment means posi 65 said cams into a rigid unit for automatic sewing of
tioned between said cam follower and said transmitting
buttonholes, motor driven means including unidirec
element for adjusting the relative position of the latter
tional clutch means toy turn all three of said cams to
to and from said cam follower device.
' 7. A zigzag sewing machine with devices for control
gether infone direction only, means for engaging and
areaioptionally by `hand and also automatically at the
pending upon _the dispositionrof said clutch engaging
means, said setting means having position indicator
symbols thereon for tive sequential stages of operations
followed in Vsewingy a buttonhole, in each of the positions
disengaging said clutch means, said three _cams being
ling the stitching length, the stitching -width and stitching 70 selectively rotatable manually and automatically de
will ofthev operator, comprising a feeder pusher for feed
ing the material to be' sewed through the machine,'drive
means operably connected tothe feeding pusher to icon-`
trol the rate of feedof the feeding pusher automatically, 75 of said setting means said cams actuating said needle
3,043,253
13
14
bar and said feeding pusher to perform respective move
ments in sewing la buttonhole, in the first position the
setting means causing sewing of the first caterpillar, in
the second causing sewing of the ñrst cross bar, in the
third position causing sewing of the second caterpillar,
in the fourth position causing sewing of the second cross
bar, and in the fifth position causing sewing-over of the
control cam, and the stitching length control cam, and a
common releasing lever operatively connected to pivot
buttonhole.
all three cam follower means away from the said three
control cams, said releasing lever carrying cam surfaces
manually adjustable lin position to bear against said cam
follower means.
‘
14. The 4invention defined in claim 1, the handle being
pivoted, the manual adjusting means comprising a plate
mounted on the pivot of the handle, the plate having two
,
11. A sewing machine capable of straight-line and zig
zag sewing and of adjustment to make buttonholes auto 10 apertures, a ñrst one providing a surface which is partly
concentric about the pivot and partly non-concentric,
matically, said machine having a material~feeding pusher,
the latter part determining the said range of movement
a lengthwise reciprocating needle bar arid individual man
of the handle, a radially movable slider having a pin the
ual means and individual -automatic cam operated means
radial position of which is determined by the said non
to move the needle bar laterally and to limit the ampli
tude of such movement as desired so as to control the 15 concentric surface, and a groove in the handle in which
the pin resides, the pin and groove delimiting the range
of movement of the handle, but only when the pin is in the
non-concentric part of said aperture.
material which is being sewed to control stitching length,
l5. The invention defined «in claim 14, wherein said
said manual means being provided with a handle, coupling
elements operable by said manual adjusting means for 20 coupling elements which are positioned to couple the
handle to the automatic means include a spring pressed
coupling and uncoupling said handle to and from said
coupling lever having an arm that passes through and is
automatic means, each of said three automatic means
actuated by an edge of the other of the two apertures
being provided with camsand cam followers, linkage
when the plate is turned to place the pin in the concentric
means connecting respective ones of said cam followers
with said needle bar and with said material pusher, setting 25 part of the iirst one of apertures.
stitching width and stitching area, and manual and auto
matic cam operated means to control the feed of the
16. A sewing machine capable of straight-line and zig
means assembling -all three of said cams into a rigid unit
zag sewing and capable of adjustment to make button
holes automatically, said machine having a material-feed
ing pusher, a lengthwise reciprocating needle bar and
for automatic sewing of buttonholes, motor driven means
including unidirectional clutch means to turn all three
of said cams together, means for engaging and disengag
ing said clutch means, said three cams being selectively 30
manual and individual automatic cam operated means to
rotatable manually and automatically depending upon the
move the needle bar laterally and to limit the amplitude
disposition of said clutch engaging means, in each of
the positions of said setting means said cams actuating
said needle bar and said feeding pusher to perform re
spective movements in sewing a buttonhole, in the iirst 35
of such movement as desired so as to control the stitching
width and stitching area, and manual and automatic cam
position the setting means causing sewing of the first
caterpillar, in the second causing sewing of the first
cross bar, in the third position causing sewing of the
second caterpillar, in the fourth position causing sewing
operated means to control the feed of the material being
sewed to control stitching length, said manual means be
ing provided with a handle, coupling elements operable
by said manual adjusting means for coupling and un
coupling said handle to and from said automatic means,
. each of said three automatic means >being provided with
of the second cross bar, and in the ñfth position caus 40 cams and cam followers, linkage means connecting re
spective ones of said cam followers with said needle bar
ing sewing-over of the buttonhole.
and with said material pusher, knob setting means assem
12. A sewing machine capable of straight-line and zig
bling all three of said cams into a rigid unit for automatic
zag sewing and capable of adjustment to make button
sewing of buttonholes, motor driven means including uni
holes automatically, said machine having a material
feeding pusher, a lengthwise reciprocating needle bar and 45 directional clutch means to turn all three of said cams
together, means for engaging and disengaging said clutch
manual and individual automatic cam operated means to
move the needle bar laterally and to limit the amplitude
of such movement as desired so as -to control the stitching
means, said three cams being selectively rotatable manu
ally and automatically depending upon the disposition of
said clutch engaging means, the cam operated means to
width and stitching area, and manual and automatic cam
operated means vto control the feed of the material being 50 control the feed of the material including a cam follower
and a cam having cam surface indentations designed to
sewed to control stitching length, said manual means be
»arrest the cam follower in the respective sequential stages
ing provided with a handle, coupling elements operable
of operation.
by said manual adjusting means for coupling and un
coupling said handle to and from said automatic means,
References Cited in the ñle of this patent
each of said three automatic means being provided with 55
cams and cam followers, linkage means connecting re
spective ones of said cam followers with said needle bar`
and with said material pusher, knob setting means assem
bling all three of said cams into a rigid unit for automatic
sewing of buttonholes, motor driven means including uni 60
directional clutch means to turn all three of said cams
together, means for engaging and disengaging said clutch
means, said three cams being selectively rotatable manu
_
UNITED STATES PATENTS
671,680
1,675,508
2,378,534
2,491,449
Hirsch ______________ __ Dec. 13, 1949
2,653,557
Casas-Robert et a1 ..... __ Sept. 29, 1953
2,729,178
Amman _______________ _.. Jan. 3, 1956
Urscheler ____________ _.- July 24, 1956
Bono _________________ __ Oct. 2, 1956
2,755,754
ally and automatically depending upon the disposition of
2,764,895
said clutch engaging means, in each of the positions of 65 2,844,114
said setting means said cams actuating said needle bar
2,905,119
and said feeding pusher to perform respective movements
2,971,482
in sewing a buttonhole.
13. The apparatus defined in claim l0, said cam fol
lowers including individual `pivoted cam follower means 70
for the stitching width control cam, the stitching area
Parkes ________________ __ Apr. 9, 1901
Muller ________________ .... July 3, 1928
Beyer _______________ __ lune 19, 1945
Benink et al ___________ __ July 22, 1958
Bono ________________ __ Sept. 22, 1959
Koike _______________ __ Feb. 14, 1961
2,986,107
Eriksson _____________ __ May 30, ’1961
535,025
Italy _________________ __ Oct. 31, 1955
FOREIGN PATENTS
Документ
Категория
Без категории
Просмотров
0
Размер файла
1 853 Кб
Теги
1/--страниц
Пожаловаться на содержимое документа