Singer 270 - Description; General Characteristics; Machine

Machine< of Cl oss 270 ore s ingle need l e, s ingle threa d, l ocks ti tch mochi nes des i gned for tack -
ing and sewing two and four ho le but tons on c lothing. T hese m achines sew a s ingle row of s ti tches
paralle l to the cy linder when sew ing two hole b utto ns and two rows of stitc he s para lle l tc th ...
cy linder wi th right angle cross -avec st i tches when sewing four ho le bu ttons.
Automatic in operotion
1
t he machine is equipped with o sewin g ree l which is loc at ed inside
t he hook body. Threa d is wound on r ee l from upper thread sup ply dur ing t he init i al n eed le pene-
tr ation. Then, w it hout o break in threa d or i nterrup t ion in mochine cycle, st itc h formation begi ns.
Ree l t hread is passed through up per threa d l oop on ea ch su ccess ive st i tc h to fo rm o regu la r
lockst i tch. Thus on ly one thread is req uired to fo rm o compl ete st i1ch pattern and no stitch
sta rt ing en ds of th r ead ore pre sent. At the end of t he sti tching pattern, thread is trimmed and
excess thread is removed fro m ree l and dtown aw oy by o s uc t ion type air p um p.
CEHERAL CHARACTERIST ICS
270 -31 Machine mak es one para lle l row of 7 ot itc h es
up an d down cylinder, and a ta ck, 1/ 4 i nc h maxi mum
lengt h. This ma ch in e is f itt ed with o tac king clomp
and o pneum atic s tar ting and clam p lifting olevice.
270 -33 Machine makes 14 Sti tc h es . - • 4 paralle l,
2 cr o ss-o v er , 4 p aral le l, 4 tyin g.
270 - 37 Machi ne make s 1R Stitches • . . 6 paral l el,
2 cro ss -over, 6 par all el, 4 tying.
Button Sewing
Machi nes ore fitted with o Bu tto n
Clomp ••• QCCommodotes 14 to 50 l igne Ou tt ons.
Rotat ing Hook with Thre ad Ree l ••. makes two
revolut
ions to tac h revolution of ar m sha ft.
TENSION
REGULATOR
CYLINDER
CO VER
PRE- TE N SIO N
Rotary Hook Shaft ••• d r iv ~:: 1l by $pirol bevel gear
from vertical arm shaft.
Th ro at Pla te • • • e qu ipped with sci ss or type trim·
ming mec hani sm fo r cutting thread at compfetion of
st itch pa tt ern.
Wor~ P lot• ••• if spec i fied , at add it ional cost .
Fe
ed Com • •• co nt ro ls operat ion of bu tton cl omp,
Sa fety l nh rlo ck • •• preven ts clomp f rom be ing
lifted wh
en m achi ne is in operation.
B elt Gu ard •• • fu ll y en c loses d riv ing belt and
st op motion device .
P ULL- OFF
LOOP
THR EA D GU IDE
lNG
3
ARM COVER
(SIDE)
FEE D CAM
BEL T GUARD
COVER