PARTS
ASSEMBLIES
FOR
Bonis
Models
S-50,
SK-51,
S-21,
S-51,
S-51-2,
BS-8
SS-51-2,
BONIS
131
Bonis
Bros.
All
Copyright
Sewing
Rights
West
(c)
1971
Machinery
Reserved
29th Street,
BROS.
Corp.
SEWING
New
York,
Cable Address: "BONIBRO"
N.
MACHINERY
Y.
10001 •
Phone
CORP.
212/563-6161
·
Boms
PARTS
Models
S-5f
SK-51
A!
MAl N
FRAME
ASSEMBLY
i .
Refer.
~
1
2
3(2)
4
5(2)
6
6·A
6-8(2)
7(6)
8(2)
9(2)
10
11(2)
12(2)
13
14
15
16
17
18
18-A
19
20
21
22
23
24
25
26(2)
27(2
28
29
30
31
32(2)
33
34
35(2)
36
37
38(2)
39(2)
40
1(4)
4
42
43
44
45
46
47
47-A
48(2)
49
50
51
52
53
54
Part
~
226 ...........
133 ...........
129 ...........
213
.........
12
8 .
..........
703
.........
704 ...........
221
...........
405
........... Top Cove
612
. .
611 .....
610
...........
248
...........
409
........... Small
30-B·T
29·B·T
1
05·51.
24 ............
203 ....
617 ...........
1
16
. .
19-S.
.......... Feed Disc
19
·A .......... Feed Disc
108
-A
108 .........
219-S
230 ...
127·T.
201-S
224
)
........... Fe
201·L
1·T
...........
51
........... Cut-
52
...........
51·A
.. . .
405 ...
107-S
121
-S .
639 ...........
18-S
. ....
39-S .......... Disc
426
.......
1 07-N .
121
·N·1·1/
639-N
18
·N·1·
46-S
..........
121-N-7/8" ...
18·N
· 7/
46
-S a
18
· R
..........
18
-R
.....
202
...........
21
............ Pressure Leve
158 ...
157 ...
250 ... .
259 ...
Chain
~o~~c~ri~pt~io~n
______________________
Tension
Nut
Top Cover
Tens
..
Ten
Top
..
Top
Front
Front
.........
...
Top
... Top
Top
Main
.........
Main
......... Main
........
Main
Belt
.......
Belt Wheel Scre
Needle
.........
.........
.........
Needle
Top
. .
Bottom
Arm
........ Work
......... Wo
......... Feed
.........
Pressure
Main
Cut·off
......
........
Cut-off
Cut-off
ion
0 i
sion Post
Cover
Cover
Cover
Cover
r Hi
Cover
Cov
er Hi
Cov
er L
Shaft
Oil
Cup
Shaft
Shaft
Shaft
Wheel
Bar
Bar
Arm
Pin
Arm
Pinch Screw
Guide
rk
Guide
Shaft
ed
Shaft
Lev
Frame
oft
Knife
Knife
Knife
Knife
Tension
Spring
sc
Thr
ead
Guide
Screws
nge
Screws
Hing
e Stoppers
nges
ock
Spring
Bushing Set Scr
s
Bushing,
Short,
Bushin
g, Long, Bron
w
Bushin
g
Tension
Post
Arm
Complete
Arm
Only
Pin
Set
Screw
Screw,
Short
Screw
Nuts
er
Shaft
Screw
Bracket
Blade
Bracket
Bracket
. ........ Front Feed Disc Stud--
........
......
.........
1/8"
8"
nd
.....
.. .
. . F
8"
.... Needle
.... Fron
..
...... Fro
426
.... Disc
Needle
Guard
Need
le
Guard_Pin
Front Feed Dtsc
Stud
Washe
Disc
Stud
Washer
ront
Feed Disc
Guard
Needle Gua
Disc St
Needle Gua
t F
eed
ud
rd
Disc
Washer
rd
nt Feed Disc
Stud
Was
Feed
her & Scr
Disc,
Rear
ch
Screws
r
Screws
Stud=.::.::.::
Screws
------
27
teeth per i
..... SawTooth Rear Feed Disc
Rear
Feed
Disc
Set
Scr
r
........ Pressure
........ Pressure Lever Spri
.......
........
Pressure
Pressure
Lever Sh
Lever
Adjusting Scr
Lever
Adjusting
aft
ng
ews
With
s,
Screw,
Screws
--
ew
ews
Screw
Bronze
ze
Pins
Long
Small
-l
::l
nch
ew Nut
FITTED
COMPLETE
# I
B.S
·C
FITTED
COMP
LET
E
#IB·N·II/8"·C
39, 41, 44, 45,
FITTED
COMP
LET
E
o#IB·N·718"·C
____
46
___
*
"C"
after
Part
Number Denotes
"COMPLETE"
liAU
II
UN:
wnen
Lift
top
frame.
oraenng
cover
Model
pans,
...
serial
number
Kmmy
number
is
stamped
state
sena1
is
stamped
on
metal
numoer
on
label
ano
1vmue1
left
rear
attached
ur
rvrcs~;mue.
corner
of
main
on
top
cover.
Model S-21 or.
t8S-51-2 equipped
reference #47-A.·
88-ST
~
ith s
Looper
eS-50
111
·~::;:)'\
.
,·
...
--
. :
~-
..
·-···-·----
··:
~~
,.._.,.,
I
~-~
...
:-::i
... ~ ..
. ~" ,
I
..
' :
112
for
#103
SS-51-
slightl
.and
..
differ
S
99
100
LOOPER FRAME ASSEMBLY
·
..
,.
------
..
,
IllUSTRATED
Looper Assembly installed
. '
\
_______
. \
.1
()
.....
_
......
IN
---------
.~··'·······'·········
,
SHADOW MACHINE:
----··
··
in
Main
131
..
\
I
~
..
--\,;
Frame.
BONIS
West
29th Street,
BROS.
New
'
I
SEWING
York,
Cable
N~Y.
Address:
"BON
MJ
1f
LOOPER
Refer.
Pan
No
. No. O
99
(2)
214
....
. . . ....
27
100
101
102
102
103
104
105
106
107
108
109
110
111
112
112
113 (4)
114
115
116
117
11
8
119
120·C
. . . . . .
(2)
202 ...
. ...... Eccentric
149
·T
.......
·A
234 ... . .
...... Loo
411·51 ......... Loo
126
....
. . ..... Loop
207 ......
(2)
609 .....
208
639
1
624
0
. .
....
... ...
44·T
. . . ...... Looper
...
. . 0 •
125 ........... Hexagon
114
·T . . .....
·A
114·B·2.
0
•• 0 ••
206
. . . . .....
(2)
143
...........
41 0·51/422
(2)
205
. .... . . . .
225
...
. . .
12
2·T·51/10T51/
225
.....
144·T
. .....
FRAME
es
cnpt1on
Balance Weig
....
Balance
Weig
cillating
per
Eccentric
per
Frame Hardened
er
Oscillating
Cam
oo
per
Oscillating
ooper
Oscillating
ooper
Oscillating
Frame
ooper Shaft
Thr
ead
Rocker
Packing
Frame
Looper
Frame
205/225
ooper
Frame
Set
Looper Chu
Looper
...
. . Os
..... Looper
••
• • • L
. .... L
...
. . L
••
••
L
.. Looper
0 2
.. Looper Frame
·51/
205/225 .... Complete
.. Looper
.....
. . .... L
...
Complete
ht Scr
ht
Screws
Cam
Roller Stud
Rock
(Specify
Rocker
Front
Back
Back
Unit
Fitted
ASSEMBLY
ews
Pin
Steel Ecc
Roller
f-----
f
FITTED·C
Arm
Roller
Stud
Arm
ck
er
Rocker Nut
Rocker
Rocker
Set Screw
Pinch
Screws
She
ll
Bracket Scr
thickness·.004, .006, .010
Front
Rocker
Stud
Fitted
Complete
Nut
With
Cam
entric
___
ews
With
--
-}
SOLD
co M
U
_
Stud - Illustra
With
Stud
AS
PLETE
NIT #609
, .
020)
ted
·C
112°A
114
*
"C"
after Part Number Denotes "COMPLETE"
0
°B
2. ...•.
.. 2
Thread
Looper
~:G··;·:
-------
--·
·::.~-
..
~-:::,
'#.·
·:'...
::·f:r:.{t(
())
.....
·
(Left
Side
Feed
IllES
1,
S-51-2,
~
BS-8*
BS-8:
Retaining Drum -
FOR
SS-51-2t
Not
Assembled) (Right Side
ILLUSTRATED
ASSEMBLY
IN SHADOW
INSTALLED
Feed
MACHINE-GEAR
IN
MAIN
Gear-
Not
Assembled)
AND FEED
FRAME-COMPLETE
(Feed
Lever-
Not
Assembled)
...
GEAR
Part
Refer
No.
No.
66
67
68
(4)
69
70
(4)
71
(4)
72
(4)
73
74
(2)
75
76
(2)
17
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
76
98-A
&
416-C
630
...........
629
...........
427
...........
424
...........
423
...........
421
...........
419
...........
628
...........
426
...........
202
..........
Right
Side
roller
springs,
416-C
416
...........
420
............
425
...........
418
...........
417
...........
11
............
132
...........
1
06
. . . . . . . . . . .
433
...........
15·C
..........
228
...........
123
...........
15
............
111
...........
109
...........
112
...........
110
...........
211
...........
209
...........
14
............
13-8
..........
202
...........
235
...........
FEED
.........
Feed
.........
FRAME
D_e_sc_ri,_pt_lo_n
Left
Feed
Feed
Feed
Feed
Feed
Feed
Feed
Feed
Feed
-Set
Gear
pins
Right
Feed
Feed
Feed
Feed
Feed
Feed
Feed
Disc
Feed
Feed
Stitch
Feed
Feed
Stitch
Stitch
Stitch
Stich
Feed
Feed
Feed
Feed
Set
Feed
Side
Retaining
Retaining
Gear
Gear
Gear
Gear
Gear
Retaining
Gear
Screws
uses
and
cams
Side
Gear
Gear
Gear
Gear
Gear
Gear(Small)
Disc
Shaft
Retaining
Lever
Stud
Lever
lever
Regulating
Regulating
Indicator
Regulating
Dog
lever
Connection
Eccentric
Screws
Eccentric
----------
Feed
same
Retaining
Drum
Drum
Cam
Set
Roller
Roller
Roller
Ring-
Drum
Plate
.
numbers
Feed
Only
Cam
Plate
Shaft
Shaft
Shaft
Drum
Fitted
Nut
Washer
Only
Driving
Screw·············
- - · · · · · • • • · · · · · ·
Pin
Plate
Cam
Screws
Spring
Pin
Left
Screws
Gear
Complete
Washer
Spring
Plate
Complete
Block
Stud
Stud
Screw
1.
FITTED
J
#13&
Drum
and
on
Nut
ASSEMBLY
Complete
Right
Side
of
Gear,
screws,
Shoulder
14-B·C J
Screw
·l
SOLD AS
{ · COMPLETE
FITTED-C
UNIT
*"C"
after Part Number Denotes "COMPLETE"
Special Gauges
for
Special Work are Available
••
v•-v,
•••v•
~•'-'•
u
~t'vv••
1
:.w
tooth
rear feed disc,
·51-2 illustrated #112-A.
~nt.
Specify Model number.
7
CAUTION:
When
Lift
top
frame.
ordering
cover
Model
parts,
...
serial
number
kindly
number
is
stamped
state
serial
is
stamped
on
metal
number
on
label
and
Model
left
rear
attached
of
corner
on
.top
Machine.
of
main
cover.
NEEDLE
Shown
BAR
INSTALLED
ASSEMBLY
IN
MAIN
FRAME
~
' '
-~
129
~CHINERY
tOOl
• Phone 212/563-6161
IBRO"
CORP.
-~~
~
138
Refer.
No.
121
122
123
,/'124
125·
126
127
128
129
130
131
132
133
133·A
134
135
136
137
138
NEEDLE
Part
No.
215
...........
115· T .........
217
...........
113-%-T
134
...........
216
...........
119
...........
227
...........
Needle
617
...........
466·51
(2)
218
...........
7·B·51
234
...........
202
...........
467
...........
469
...........
468
...........
(2)
210
...........
131
through
.......
Bonis
........
........
134
BAR ASSEMBLY
Description
Needle
Bar
Tension
Needle
Bar
Needle
Bar
Needle
Bar
Needle
Bar
Needle
Bar
Needle
Clamp
Needle
Clamp
System H and
Needle
Bar
Needle
Bar
Needle
Bar
Needle
Bar
Yoke
Eccentric
Yoke
Eccentric
Needle
Bar
Needle
Bar
Needle
Bar
Needle
Bar
Sold
as
complete
F
Tension
Tension
Tension
Tension
Screw
Bushing
Yoke
Yoke
Pinch
Yoke
Eccentnc
Set
Set
Yoke
Support
Yoke
Adjustable
Yoke
Support
Yoke
Adjustable
unit
Plunger
Plate
Plate
Spring
Plunger
--
Pin
Screw
Screw
Nut
- - - -
S~rews
___
-J
_
Shaft
Bracket
Shaft
lock
Bracket
SOLD
UNIT
Nut
Screws
AS
COMPLETE
'1¥466-SI·C
*"C'' after Part Number Denotes ''COMPLETE"
DEALERS:
REFERENCE
NOT
THE
PART
SAME.
NUMBERS
NECESSARILY
NUMBER,
ON
EACH
SAME,
PLATE
HOWEVER,
THE
IF A DUPLICATE
IS
ARE
THE
Printed
in
U.
S.
A.
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