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Патент USA US2120210

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June 7, 1938.
2,120,210
A. B. CLAYTON
SEWING momma
Filed Jan. 22, 1937
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June 7, 1938.
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A. B. CLAYTON
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SEWING
MACHINE
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Filed Jan.- 22", 1937 -
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2,120,210
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June 7,‘ 1938.
A. B. CLAYTON
2,120,210
SEWING MACHINE
Filed Jan. 22, 1937
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June 7,1938.
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A.IB. CLAYTON
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SEWING MACHINE
Filed Jan, 22, 19:57
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Filed Jan. :22, 1937
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June 7,‘ 1938.
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A. BVCLAYTOAN
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Filed ‘Jan. 22"‘, 1937 '
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June 7, 1933.
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Filed Jan. '22, 1937'
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Patented June ‘l’, 5938
ilhii'lhh'. stares earner orrica
SEWING MACHINE
anal-aw 3. ‘Clayton, Union, N. 3., assignor' to The
Singer Manufacturing Company, Elizabeth,
N. 5., a corporation of New Jersey
Application January 22, 193'}, Serial No. 121,747
(Ci. lime-197)
15 @laims.
This invention relates to sewing machines,
more particularly of the chain-stitch straight
away-feed type, and has for an object to provide
an organized sewing machine of the type in gues
5 tion having improved characteristics enabling it
to be commercially operated at speeds of the
order of 6000 stitches per minutawithout undue
wear and tear on the parts.
>
supporting base 5 which constitutes a closed bot
tom wall of the bed. The hollow frame casting
has at the standard end thereof a'vertical inter
nal partition 6 which extends fromthe bottom
wall of the bed i to the top wall of the bracket 5
arm ’3 and divides the space‘ within the frame
casting into an oil or splash-lubrication com
partment l and a belt compartment 8. The bed
A further object of the invention is to provide ' i has another internal wall or partition 9 which
lor
the simpli?cation and ready access to the divides the oil-splash compartment 1 vfrom the 1B
6.
feed and looper compartment H3. The bracket
parts of the machine, facilitatinglts manufac
ture, operation and maintenance.
arm 3 has an internal partition ll’ which divides
the oil-splash compartment from the needle-bar
rnechanism compartment it within the hollow
head 5. The oil-splash compartment 1 extends 35
15 the devices, combinations, and-arrangements of - upwardly, from the oil sump i2, Fig. 3, through
parts hereinafter set forth and illustrated in the
the standard 2 and laterally intothe bracket-arm
accompanying drawings of a preferred embodi
ment .of the invention, from which the several 3. This oii~splash compartment is practically oil
With the above and other objects in view, as
will hereinafter appear, the invention comprises
features of the invention and the advantages at
2 C) tained thereby will be readily understood by those
skilled in the art.
1
Referring. to the drawings, Fig. 1 is a front
tight.‘ At. the bottom of the sump i2 there is
provided a, clean-out opening closed by 'the 20
gasket-?tted cap !3. At the rear of the frame
there is provided an access opening into the oil
side elevation of a' sewing machine embodying
compartment 1 which is closed by the gasket-?t
tion through the machine frame showing the in
95' carrying a'breather or ventilating pipe it,
Fig. 4,-which passes through the cap 15' and has
its free end down-turned. The cap i5’ is held in
the invention. Fig. 2 is a detail view, in plan, of _ ted plate 54. In the top wall of the bracket-arm
a the rotary looper~thread take-up element of the there is provided an access opening I 5 into the
oil compartment ‘I closed by the gasket-fitted cap
machine. Fig. 3 is a longitudinal vertical sec
ternal mechanism. Fig. 4 is a section on the line
li-é, Fig. 3.' Fig. 5 is a front end elevation of the
'30
machine.
Fig. 6 is a section on the line 5-5,
Fig. 5. Fig. 7 is a section on the line 'l-‘l, Fig. 5.
Fig. 8 is a vertical axial section through the
presser-bar and presser-spring. Fig. 9 is an ele
vation of the needle-bar guide-pin.
.
-
Fig. 10 is a rear v‘end elevation of the machine.
Fig. 11 is a rear elevation of the housing for the
looper-thread take-up which housing is shown in
section in Fig. 16. Fig. 12 is a horizontal section
through the machine bed at the level of the main
shaft. Fig. 13 is a rear side elevation of the ma
40
chine. Fig. 14 is a section on line til-iii, Fig.
3, showing the cloth-plate in plan. Fig. 15 is a
section on the line iii-iii, Fig. 3. Fig. 18 is .a
view of an element of the lower-actuating mech
J an‘sm which is partially hidden in Fig. 15. Fig.
17 is a vertical sectional view on the line i‘l—i'l,
Fig. 12. Fig. 18 is a sectional View on the line
_ lB-i8, Fig. 12, and Fig'lQ is‘a perspective view
of the cloth-plate and hinged guard ‘carried
thereby, removed from the machine.
'
The hollow machine frame‘, which is preferably
cast in one piece, comprises a hollow bed i
iromone end of which rises the standard 2 of
U1 bl
place by the leaf-spring i‘l'which is pivotally se
so
cured to the bracket-arm by the shouldered screw
it and may be swung laterally about the screw it
to release the cap l5’.
Disposed within the bed i is the lower rotary
main shaft 49 which extends through the belt
compartment 8 and oil compartment '7 and into
the feed and looper compartment ill. "The main
shaft is journaled in the conventional closed type
ball bearings 20 and 2t fitted into the partitions
d and t, respectively.
Disposed alongside the
bail-bearing 2B is an open type ‘ball-bearing ‘iii’ to
aid in carrying the main-shaft.
All of these
bearings are exposed to an oil mist or spray pro- -
duced in the oil-splash compartment.
" Disposed within the bracket-arm 3 is the upper 45
rotary shaft 22 which extends through‘ the belt
compartment a and oil compartment 1 and into
the hollow head 6. The upper shaft 22 is‘ jour
naled in the conventional closed type ball hear
ings 23, 2d which are ?tted into the partitions H 50
and h, respectively, and are exposed to the ‘oil
mist generated in the oil compartment.
Mounted on: the shafts l9 and 22 within the '
the overhanging “bracket-arm 3 terminating in' ‘belt compartment 8 are the belt-sprockets 28 01'
the head ll. The bed i includes the rectangular equal size which"are ‘connected by the conven
2
' tional clip belt 28. The outer open face oi?the
Cooperating with the needles 29 to form
stitches are the thread-carrying loopers ‘I8
belt compartment 8 is closed by the cover-plate
21 having openings through which the shafts I 9
which are mounted on the looper-carrier arm 17
and 22 project. Mounted on the outwardly pro
jecting end of the main-shaft I9 is the belt
having at its lower end a split boss ‘I8 which is
clamped to a stud-pin ‘I9 Journaled in the trans
pulley and hand wheel 28 by which the machine
I
is driven.
The needles 29, which reciprocate vertically through the needle-holes 88 in the throat-plate
10 8|, are carried by the hollow needle-bar 82 Jour
naled in the bearing bushing 88 in the frame head
4. The upper end of the needle-bar '82 is entered\
by the guide-pin 84. Figs. 5 and 9, having at its ‘
verse bearing head 88 of the hollow looper~sup
porting rock-shaft 8|. The rock-shaft 8| is
Journaled. below and parallel to the main shaft
I9 in a bushing 82 in the frame-partition 9.
Within‘ the oil compartment the bushing 82 is
formed at its upper side with an oil-catching
pocket 88 to lubricate the bearing between the
bushing 82 and the rock-shaft 8i. The rock
, upper end a head 38 which is ?xed in the frame
shaft 8| has at the upper side of its inner end
15 head 4 by the screw 38. The guide-pin 94 is . portion an oil-catching pocket 84 communicat
15
_ formed'with an external longitudinally extend
ing through the hollow rock-shaft with the bear
ing oil-groove 81 to which oil is conducted through ing between the transverse. bearing head 88 and
.the port 38 from the internal duct 89 extend
the stud ‘I9. The rock-shaft 8| has clamped to
, ing downwardly from the ,oll-,-reservoir 48 in the it within the oil compartment ‘I the split hub
20 head 98 which may contain an absorbent plug
85, Figs. 15 and 16, of a fork 88 which embraces 20
4|. The needle-bar 92 has clamped to its upper the follower block 81 of the looper side-throw
end a collar 42 carrying a lateral pin 48 which eccentric 88 ?xed to the main shaft I9.
’
is embraced by the upper end of the link 44. the
The looper-carrier ‘I1, Figs. 1, 5, and 12, is _
'
‘ lower end of which embraces the hollow crank-.
connected by a ball-and-socket joint 89 to one
.25 pin 48 carried by the crank-head 48 ?xed to the
end of a link 98 which is connected at its other 25
.upper shaft 22. The lateral pin 48 carries a end by a ball-and-socket joint 9| to the lower
guide-block 41 which works in the vertical guide .end of a crank-arm 92, Fig. 15, clamped at its
way 48 in the plate 49 ?xed in the head 4. The upper end to the outboard projection of a rock
hollow crank-pin 48 is in communication shaft 93, Fig. 14, journaled above and trans
30 through the lateral duct 88, Fig. 3, with the oil
versely of the main-shaft I9 in bushings 94, 95 30
reservoir 5! within the shaft 22. This oil reser
in the frame front side wall and the internal
voir is closed at the head end of theshaft 22 by bearing block 98 which is detachably mounted
means of the screw plug 82. It may be ?lled with on the frame withinthe standard 2.
' oil through a lateral opening which is normally
The rock-shaft 98 has forged integral there
closed by the removable‘ ?ller-plug screw 88. with a laterallyextending crank-arm 91, con at
Any excess of oil within the head 4 will gravitate nected by a ball-and-socket joint 98, Fig. 3, to
to the oil-pocket 84 at the bottom-of the head the upper end of a pitman 99 which at its lower
4 from which it will run through the drainage and embraces the eccentric ball or crank I88 in
duct 88 into the bracket-arm 3 and gravitate the main-shaft I9. Extending downwardly from
40 to the oil-sump l2. To prevent loss of the ?ller
the pitman 99 is the oil-splasher or agitator IOI 40
plug screw '88 within the hollow machine frame‘ which dips into the oil-sump I2. The oil
when inserting or removing said screw, there is splasher II“ is formed in its front side with an
frictionally ?tted within the access opening I5 oil pick-up groove I82 which communicates at
a split cup 58 the bottom 81 of which is aper
its upper end with the bearing of the eccentric
45 tured at 88 to partially receive the shaft 22 but
ball ‘I88. It will be understood that; while the 45
not touch such shaft; the clearance crack be
machine is in operation, the looper-operating
tween the apertured cup and shaft beingnarrow parts within the oil compartment will be ?ooded
enough to retain the screw 83 should it drop with a mist or spray of oil and effectively lubri
within the cup 88. Any oil which may work its ‘ cated, the spray being con?ned within the oil
50 way through the ball-bearing 28 will be trapped, compartment and prevented from reaching the
50
within the bearing cap 89 and will run back feed and looper ‘compartment I0 on the other
through the drainage duct 88 into the bracket
side of the partition 9. Any oil which may pos
arm 8 and gravitate to the oil-sump I2.
sibly work its way through the ball-bearing 20,
The presser-foot 8i, Figs. 5 and 8, of the ma
Fig. 3, will be trapped by the bearing cap I08
55 chine is carried by the short hollowpresser-bar and returned through the drainage duct I04 to
55
v82 which is jcurnaled in the bearing sleeve 89 the oil-sumpv I2. In this connection it may be
in the head 4 and'is urged downwardly by the noted that the belt-compartment 8 has an oil
coil-spring 84 housed within the guide tube 88 pocket I08 at its lower end which is connected ‘
?xed in the head 4. The spring 84 is ?tted at by the oil-drainage duct I86 with the oil-sump.
60 its lower end with the tapered plug-head 88
Any possible leakage of oil through the ball 60
which engages the top end of they hollowpresser
bearings 2| and 24 is thus taken care of.
bar 82. At its upper end the spring 84 is ?tted
with the cylindrical plug-head 87 which is en
The machine is provided with a four-motion
feed-dog I81, Fig. 5, which is mounted on the
gaged by thev adjustable thumb-screw 88 by which
65 the working pressure of the spring 84 upon the
presser-bar 82 may be regulated. There is
clamped to the presser-bar 82 a split-collar 89
having a lateral arm 18 which extends outwardly
of the head 4 through the guide-slot H and is
70 engaged’by the usual treadle- or knee-controlled
presser-lifting lever ‘I2, Fig. 13, fulcrumed at ‘I8
on the bracket-arm 3 andubiased by the spring
14 in a direction to yieldingly retain the front
' end of the lever 12 in engagement with the stop
76 piu I8.
'
I
feed-bar I98 fulcrumed at its rear end on the .
pin I 89 carried by the forked upper end of the 65
feed-rocker “'9, Figs. 12 and 17.‘ The feed-rocker
IIO has formed integral therewith at its lower
end a tubular boss I I I, Fig. 17, which is journaled
to rock upon the stationary bearing pin II2 ?xed
in splitbushings I I2><in the frame. Clamped upon 70
the tubular boss III of .the feed-rocker H0 is the
inclined slotted arm “2' which is engaged by the
slide-block H8 journaled on the bushing II4,
Fig. '7, carried by the feed-adjusting pin I I 5 which
passes through and is clamped to the slotted 75
3
through the rotary take-up device within the
arm Iii of the feed-actuating lever H6, H1, ful
vhousing I52 and thence externally of the hous
crumed on the stud-pin H8 carried by the ma
ing and downwardly through the thread tube
chine frame. By loosening the clampescrew II9
on the pin II5, the latter may be shifted along . I56. From the lower end of the thread tube I55,
the slots in the lever-arms H2’, H5 and clamped Fig. 12, the looper-threads lead through the
in any desired position of adjustment upon the ‘thread-guides I 51 and‘ I58 to the loopers ‘IS.
lever-arm H6, thereby regulating the length of .
The needle-threads lead‘ from. the supply
the feeding stroke imparted to the feed-bar I08. through the needle-thread tension-devices I59,
The feed-lever arm HT is forked to embrace the Fig. 1, to the adjustable thread-guide arm I60
10 block I20 on the feed-eccentric IZI on the main
from which the threads run to and through the
thread-eyes in the take-up arm I H ?xed to the
shaft I9.
‘ .
The feed-bar I I38 receives its rising and falling needle-bar. From the take-up I ii the threads
run down through the guides I62 to the needles
components of motion from the feed-lift eccen
tric I22 on the main shaft. The eccentric I22 29.
15 is embraced by the strapped end of a cylindrical
Detachably secured to the machine bed I, flush
pin 323 which slid-ably ?ts a horizontal bore I24, with the throat-plate BI, is the- cloth-plate I63
having near its front edge a depending'hlnge
Fig. 5, in the feed-bar I68.
It will be observed in Fig. 18, that the fulcrum: pin ltd carrying the guard I65, Fig. 19, for the
pin H8 for the feed-actuating lever II‘! passes exposed connections of the looper-mechanism.
through the partition 9 from the feed and looper The guard I65 is yieldingly retained in closed po
compartment ill into the oil-splash compartment
10
_
15
20
sition by the arms of the’ U-spring 1%, Fig. 14,
which grip the thread-guide post I57‘.
'1 and is provided within the latter compart
ment with an oil-catching pocket I25 communi
cating through the wick-?lled bore I25 and port
25 I27 with the bearing for the lever ill.
Communicating with theoil-sump I2, Fig. 10,
is an oil well l6’! into which dips aremovable
oil-gage-rod I68 having a mark I69 thereon to 25
The bearing between the feed-rocker lit and ' indicate the proper oil level to be maintained
the pin H2, Fig. 17, is similarly lubricated by within the sump I2.
'
oil splashed from the sump I2, Fig. 15, into the
While the machine is operating, the space
oil-catching pocket I28’ at the inner end of the within the oil compartment ‘I is ?lled by an oil
80 nipple i28 which is connected by the oil-pipe I29
mist and spray produced ‘by ,the agitator IIII. 30
to the nipple I30 threaded into the head end I3I, This mist thoroughly’ lubricates all of the ball
Fig. 17, of the pin H2 which has a wick-?lled bearings as well as the parts of the looper-ac
bore i152 and ports I33 leading to the bearing tuating mechanism-within the oil compartment.
surfaces.
‘
Notwithstanding this ?ush lubrication within the
By referring to Figs. 12 and 14, it will be ob
oil compartment, the loopers themselves and
served that the feed-bar N38 is provided‘ with a ~ thread-and work-handling parts are maintained
wick-?lled pocket 1343 and the feed-actuating le
dry and un-contaminated by oil, yet the feeding
ver is provided with wick-?lled pocket I35. The
mechanism is automatically lubricated. The ma
pocket 53$ communicates with and lubricates the , chine is also easy to thread up and access may‘
The be readily had to any ‘part with a minimum loss
pocket l55 lubricates the feed-eccentric Ill and
follower block MB. Oil is conducted’by gravity
The invention is. not to be understood as lim
to the pockets Ht, I35 by conduits I35, leading ited to the speci?c embodiment thereof shown
downwardly from thewick-?lled reservoir i31 . and described. ,
45, mounted on the cover-plate it and fed by-theoil
‘Having thus set forthv the nature of the in 45
catching pocket I38 at the inner side of such vention, what I claim herein ISL
cover-plate.
1. A sewing machine having a hollow frame
The bearings for the looper-actuating rock-v } including a bed having a bottom wall, a standard '
48 bearings for the pins i?d and 523, Fig. 5.
.
shaft 93 are lubricated from. the oil-catching
50 pockets iilil? and Mill’, Figs. 14 and 15,‘ and oil
fed to the groove 339 and port Mil in the rock-.
shaft 98. from the oil-catchingpocket Iéila is
conducted ‘by/the holes 859, M2 to the ball-and
socket bearing 9i.
55
'
.
The rear wall of the feed and looper com
partment it is closed by the removable cover
plate M3. The outside wall of the feed and
looper compartment it has an access opening
thererhrough which is closed by the removable
cover-plate M5 on which is mounted the needle
guard ?xture i235 carrying the needle-guard M5.
The end of the upper shaft 22 whichprojec'ts
outwardly through the belt-compartment cover
plate ‘2'1 has mounted thereon the single-disk
65 rotary take-up or looper-‘thread-controlling
cam lél'i' operating through the slotted guard
plate 358 carrying the U-shaped thread-retainer
MS and thread-guides'i5?. The guard-plate “it
is mounted on the angle-bracket i5i ?xed to the
70 cover-plate 2i. The entire take-up assembly is
guarded by the enclosing housing i52 including
III
the hinged cover E53 and the supporting ledge
E55 for the looper-thread tension devices I55.
The looper-threads lead from the supply
75 through the tension devices I55, Fig. 1, to and
of
time.
'
,
_
and a bracket-arm, said frame having within it
a vertical partition extending from the bottom ‘50' '
wall of the bed through the standard to the
top wall of the bracket-arm. and dividing said
hollow frame into an oil-splash compartment and
a belt compartment, a lower main-shaft extend
inghorizonially through said compartments, an 55
upper shaft extending horizontally through said
compartments. bearings for said shafts exposed
‘to oil mist in said oil-splash ‘compartment, a belt
connection between said shafts in said belt com- '
partment, a reciprocatory needle actuated by said 60
upper shaft, a looper actuated by said lower
shaft, and an oil agitator in said oil compartment.
2. A sewing machine having a hollow frame in
cluding a bed having a bottom wall, a standard
and a bracket-arm, said frame having within it 65
a vertical partition extending from the bottom
wall of the bed through the standard to the top
wall of the bracket-arm and dividing said hollow
frame into an oil-splash compartment and a belt
compartment, 9. lower main shaft extending hor’ 70
zohtally through said compartments, an upper
shaft extending horizontally through said com
pariments, bearings for said shafts exposed to
oil mist in said oil-splash compartment, a belt
connection between said shafts in said belt com .75
I
- 2,120,210
‘partment, a reoiprocatory needle actuated by
said upper shaft, looper actuated by said-lower
shaft, a removabl \ cover-plate closing said belt
compartment, an oil agitator in said oil compart
ment, and a belt-pulley and rotary looper
thread take-up carried by said shafts externally
of said oil and belt compartments. ‘
3. ‘A sewing machine comprising a frame cast
“ inglincluding a bed, standard and overhanging
bracket-arm, said frame casting having an in
comprising a bed, standard and overhanging ,
bracket-arm terminating at its free end in a
head, said hollow frame having internal parti
tions dividing the space therewithin into a needle
bar-meehanism compartment H in said head, a
feed and looper compartment l8 in that portion
of the bed directly below said head, an oil-splash
compartment 1 in said bed, standard and brack
et-arm, and a belt-compartment 8 in said stand
ard, an upper rotary shaft extending from com
ternal partition dividing‘ the space therewithin
partment 8 through compartment 1 into compart
into a splash-lubrication compartment and an
ment ' II, a lower rotary shaft extending from
open-faced belt compartment, a cover-plate clos
compartment 8 through vcompartment ‘I into
ing the open face of said belt compartment, upper _ compartment ill, a needle and needle-bar mech
15 and lower rotary shafts each dournaled at one
end in said partition and extending through
clearance apertures in ‘ said cover-plate, belt
connected sprockets on said shafts within said
belt compartment, a reciprocatory needle actu- '
20 ated by said upper shaft, looper and feed mech
anisms actuated by saidlower shaft and includ
ing looper-actuating eccentrics and followers
disposed in said splash-lubrication compartment,
a rotary looper-thread take-up mounted on said
25 upper shaft exteriorly of said belt compartment,
a housing for said take-up mounted on said belt
compartment cover-plate, and an oil agitator in
said splash-lubrication compartment.
' 4. The combination recited in claim 3 in which
30
anism connected to the upper shaft within com
15
partment H, a looper mounted in compartment
l0, looper-actuating mechanism connected with
in compartment 1 to be driven by the lower shaft,
a feed-dog and fe'ed-dog-actuating mechanism
connected to the lower shaft in compartment il, 20
a sprocket-driven belt connecting the upper and
lower shafts within compartment 8, and oil
splashing means actuated by the lower shaft in
compartment 1.
I
8. A sewing machine having a hollow fram
25
including a bed, standard and bracket-arm, said
frame having within it a substantially oil-tight
splash-lubrication compartment, a main-shaft
Journaled in said frame and entering said com
the looper-thread take-up housing comprises sta
partment, two looper-actuating rock-shafts jour 30
tionary and hinged sections, and in which one or
naled in said frame and entering said compart
more looper-thread tension-devices are mounted
ment, mechanism driven by said main-shaft and
on the stationary section of said housing.
disposed within said compartment for actuating
5. A sewing machine having a hollow frame said rock-shafts, a reciprocatory needle carried
35 casting including a bed, a standard rising from by said bracket-arm, a complemental looper in 35
.one end of vsaid bed, and a bracket-arm carried ' said bed, a looper-carrier pivotally supported by
by said standard ‘and overhanging said bed, said one of said rock-shafts externally of said com
casting having at the standard end thereof a partment, an operative connection externally of
‘I vertical internal partition dividing the space
40 within. the casting into an oil-splash; compart
ment and an open-faced belt compartment, an
said compartment between (the other rock-shaft
and said looper-carrier, and means to splash oil 40
in said compartment.
»
,
I
upper rotary shaft disposed in, said bracket-arm
45
9. A sewing machine having a frame formed
and journaled at one end in said partition, a with a bed and an overhanging bracket-arm, said
lower rotary shaft'dlsposed in saidbed and jour
frame having an oil~splash compartment, a
naled at one end in said partition, belt-sprockets main-shaft Journaled in said bed’ and passing 45
and a connecting belt carried by said shafts in through said compartment, driving elements onv
said belt compartment, a reciprocatory needle said shaft within said compartment, a recip
actuated by said upper rotary shaft,_ a looper, rocatory needle carried by said bracket-arm,‘ a
. looper-actuating mechanism including looper-ac
50
rock-shaft Journaled below and parallel to said
t-uating eccentrics carried by said. lower rotary , main shaft in a wall of said compartment and 50
shaft within said oil-splash compartment, a re-, _ connected to be actuated by one of said driving
movable'cover-plate closing said belt compart- ' elements, a looper-carrier fulcrumed on said rock
ment, and means to splash oil in said oil-splash shaft exteriorly of said compartment,‘ a second
' compartment.
‘
rock-shaft Journaled above and transverse to said
6. A sewing machine having a. hollow frame‘ main-shaft in a wall of said compartment and 55
55
casting including a bed having a bottom wall, a connected to be actuated by another of said driv
standard and a bracket-arm,'said casting hav
ing elements, a crank-arm carried by said second
‘ing within it a vertical partition extending from rock-shaft exteriorly of said compartment, a link
the bottom wall of the bed through the standard connection between said crank-arm and looper
carrier, a looper mounted on said looper-carrier 60"
60 to the top wall of the bracket-arm and dividing
the hollow frame into an oil-splash compart-v in cooperative relation with said needle, and oil
ment and a belt compartment, a lower main shaft splashing means within said compartment.
extending horizontally through said compart
ments, an upper shaft extending horizontally
65 through said compartments, a belt-connection
' 10. A sewing machine having a frame formed
with a bed and an overhanging bracket-arm, said
frame having an oil-splash compartment, a main
between said shafts within said belt compart
ment, a reciprocatory needle carried by'said
bracket-arm and actuated by said upper shaft,
a looper mounted in said bed and connected to
70 be actuated by a portion of the lower shaft with
shaft journaled in said bed and passing through
in 'said oil compartment, a four-motion feed-dog
wall of said ‘compartment and connected to be
connected to be actuated by a portion of said
a lower shaft exterior to said oil compartment, and
75
oil-splashing means in said oil compartment.
7. A sewing machine having a hollow frame
65-
said compartment, driving elements on said shaft
within said compartment. a reciprocatory needle
carried by said bracket-arm, a rock-shaft jour
naled'below and parallel to said main shaft in a. 70'
actuated by one of said driving elements, a '
looper-carrier fulcrumed on said rock-shaft ex
teriorly of said compartment, a second rock
shaft journaled above and transverse to said main
is
'
5
2,120,210
shaft in a wall of said compartment and con
- hollow shaft journaled in said bracket-arm and
nected to be actuated by another of said driving constituting a rotary oil-reservoir, a crank on said
elements, a crank-arm carried by said second shaft receiving oil from said reservoir, a remov?
rock-shaft exteriorly of said compartment, 9. link
able ?ller plug in the side of said shaft, said frame
connection between said crank-arm and looper‘
carrier, a looper mounted on said looper-carrier
having an' opening therein through which access
in cooperative relation with said needle, and a
cloth-plate detachably mounted on said bed and
including a hinged portion guarding said crank
10 arm and link-connection when in closed position.
11. A sewing machine having a frame formed
with a bed and an overhanging bracket-arm, said
frame having an oil-splash compartment, a main.
shaft journaied in said bed and passing through
said compartment, driving elements on said shaft‘
within said compartment, a reciprocatory needle
carried by said bracket-arm, a rock-shaft jour
naled below and parallel to said main shaft in a
wall of said compartment and connected to be
20 actuated 'by one of said driving elements, a looper
carrier fulcrumed on said rockishaft exteriorly
of said compartment‘, 2. second rock-shaft jour
naled above and transverse to said main shaft
by said frame and extending from said opening
into close proximity with said shaft to prevent
is had to said filler plug, a tubular guard carried
accidental loss of the ?ller plug within. the sew
ing machine frame when removed from said
shaft, and a. removable cover closing said frame
opening.
-
p
14. A sewing machine comprising a hollow
frame having a'splash-lubrication compartment,
9. main-shaft extending through‘ said compart-'
ment,_ two looper-actuating eccentrics on said
shaft,’ a.;bearing bushing fixed in said frame and
extending at its inner end into said compartment,
said bushing having an oil-catching pocket at its
inner end to’ lubricate the bearing surface within 20
said bushing, a hollow rock-shaft-journaled in
said bearing and extending at its inner end into
said compartment, said rock-shaft having a bear
in a wall of said compartment and connected ' ing head at its outer end and an oil-‘catching
to be actuated by another of said driving ele
pocket at its inner end-in communication with .
ments, a crank-arm carried by said second rock» said bearing head, a looper-carrier journaled in' '
shaft exteriorly of said compartment, a link
said bearing head, an eccentricfollower arm fixed
connection between said crank-arm and looper- " to said rock-shaft within said compartment and
carrier, a looper mounted on said looper-carrier embracing one of said looper-actuating eccen
in cooperative relation with said needle, and trics, means actuated by the other of said eccen- 1
work-feeding mechanism disposed exteriorly of
tries to rock said looper-carrier relative to said
said compartment and‘ including feed-lift and I bearing'head, and an oil agitator within said
feed-advance actuating elements carried by said
shaft.
12. In a sewing machine, a hollow frame
35
compartment.
'15. A sewing machine having a' frame formed
with a splash-lubrication compartment, a main
formed with a bed, a standard and a bracket
shaft extending through said compartment and ,
arm terminating in a head, said frame having
having therewithin an eccentric crank-portion,
an oil sump in said bed and a substantially oil
a rock-shaft journaled in said frame and extend
ing through a wall of said compartment, means
tight oil-splash compartment draining to said
sump and extending upwardly within said stand
ard and laterally into said bracket-arm, there
actuated by said eccentric crank-portion for 40
rocking said rock-shaft, a crank-arm ?xed to said
being a partition in said bracket-arm which di
rock-shaft exteriorly of said compartment and >
vides said compartment from the space within having a ball at its free end, said rock-shaftv
said head,_ an upper shaft disposed in saidv and crank-arm having communicating oil-holes
.45 bracket-arm and extending through a bearing in leading to said ball, an oil-catching means in said
said partition into said head, anda reciproca
tory needle-bar mounted in said head and con
nected to be actuated by said shaft, said head
having an oil-catching pocket below said shaft,
50 and said frame having an oil-drainage duct ex
tending from said pocket'through said partition
to said compartment.
,
13. A sewing machine having a hollow frame
including a bed, standard and bracket-arm, a
splash-lubrication compartment in communica 45
tion with the oil-hole in said rock-shaft, a looper
supporting rock-shaft actuated by said main
shaft, a looper-carrier iournaled on said rock
shaft, a link connection between said looper-car
.rier and ball, and an oil agitator in said compart 50
ment.
ANDREW B. CLAYTON.
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