Патент USA US2120210код для вставки
June 7, 1938. 2,120,210 A. B. CLAYTON SEWING momma Filed Jan. 22, 1937 ' a Sheets-Sheetl. L» ‘ WW June 7, 1938. w A. B. CLAYTON ' SEWING MACHINE ‘ ‘ .~ Filed Jan.- 22", 1937 - WWW», / - 2,120,210 ‘ .' I ' s sheets-sheet 2 ‘ I June 7,‘ 1938. A. B. CLAYTON 2,120,210 SEWING MACHINE Filed Jan. 22, 1937 v8 Sheets-Sheet 3 Flt/dr» r. I| n gwuamlm June 7,1938. » } A.IB. CLAYTON v ' 2,120,210 SEWING MACHINE Filed Jan, 22, 19:57 a Sheets-Sheet 4 "June 7,1938. “ nacyAy-roy _ ~ 2,120,219 ‘ swims momma mm Jan. 22, 1931'v w , a Sheets-Sheet 5 . C) @Qndmw ,B. UZWonI/‘I - . Gum ' June 7’, 1938. ' - A. 'B. CLAYTON 2,120,210 ‘_ sawme u'cnmn Filed Jan. :22, 1937 a Shqets-SheotB @Yndrew ?. Clgyion / . June 7,‘ 1938. ' A. BVCLAYTOAN ’ 2,120,210 - ‘ snwme momma Filed ‘Jan. 22"‘, 1937 ' ' a Sheets-Sheet 7 x CZgyton 0 June 7, 1933. A, B, cLmfoN - 2,120,210 spvune momma - Filed Jan. '22, 1937' a Sheets-Sheet s - @W mm 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.