US2013884A - Sewing machine - Google Patents

Description

Sept. 10, 1935- e. GOLDWYN ET AL SEWING MACHINE Filed Jan. 10, 1935 3 Sheets-Sheet l Sept. 10, 1935. G. I. GOLDWYN AL SEWING MACHINE Fil ed Jan. 10, 1955 5 Sheets-Sheet 2 P 1935- G. I. GOLDWYN ET AL 2,013,884

SEWING MACHINE Patented Sept. 10, 1935 SEWING MACHINE Application January 10, 1935, Serial No. 1,135

7 18 Claims.

This invention relates to improvements in sewing machines and especially to commercial power machines which are operated at high speed and are subject to severe usage, and it consists of 5 the matters hereinafter described and more particularly pointed out in the appended claims.

In some of its phases, the invention is more particularly concerned with power sewing machines for forming an overcast or overedge stitch,

10 through cooperation between the needle, the looper and loop spreader, in the manner well known. Such a machine is well adapted for sewing in connection with relatively heavy material, such as burlap bagging.

3 When such machines as now made are used in the renovated burlap bag industry, in the production of an overcast or overedge seam, along one side and end and associated connectingcorner of a turned inside out bag, they are open to 20 certain inherent objections. In such machines,

the bearings for the looper and the loop spreader are disposed adjacent and beneath the throat plate. In overcasting or overedging the seam of such a bag, no matter how much care was used 25 in cleaning the bag, a certain amount of the material originally contained in the. bag, and especially the dust-like particles thereof, remain in the seam. Due to rapid needle movement, which amounts to about 1600 per minute, some of said 80 dust-like particles, along with lint, are carried through the throat plate openings and will accumulate on the bearings for the rock shafts of the looper and the loop spreader.

Such dust-like particles and lint are indeed 3 destructive to said bearings and especially so when the bearings are dry with the result that they readily wear out and require expensive replacements. In attempting to overcome this objection, certain expedients have been tried. One

of such expedients included a force feed oiling system for said bearings. This, however, met with little success, because it was found that the oil fed to said bearing mixed with said dust particles and lint to form a pasty abrasive mass,

This, of course, increased the cost of vide a machine capable ofsatisfactory operation at high speed with a reduced power consumption.

Another object of the invention is to provide a structure for a sewing machine of this kind 5 giving more room and greater freedom for the hands and arms of the operator with an increased safety factor and to provide a structure which will prevent dust-like particles, lint and other foreign matter from contacting the vital operating parts of the machine.

A further object of the invention is to simplify the mechanism for actuating the looper and the loop spreader and so to locate or arrange said mechanism as to make it run in an oil bath in an oil tight casing, which prevents dust particles and lint from the bag seams from reaching the bearings included in parts of the mechanism.

Still a further object of the invention is to provide a mechanism for such a machine, wherein the arms for the rock shafts of both the looper and loop spreader are actuated by rods, in turn actuated by a forwardly and rearwardly extending crank shaft arranged to run in the oil bath.

Still another object of the invention is to provide a mechanism for a machine of this kind, wherein the parts are materially reduced in number and are arranged in balanced relation to run in an oil bath, so as to provide a saving not only in the initial manufacturing cost but also in the power requirements for operating the same.

Again an object of the invention is to provide a mechanism for a machine of this kind, which includes means for pumping oil from said oil bath to the bearings of other parts of the machine and which oil shall return by gravity to said bath for further recirculation to said bearmgs.

The above mentioned objects of the invention as well as others, together with the several advantages thereof, will more fully appear as we proceed with our specification.

In the drawings-- Fig. 1 is a view partly in elevation and partly in longitudinal vertical section through the oper- 'ative parts of a sewing machine embodying our invention, the cover plate for the overhanging arm being omitted better to disclose the parts within said arm. I

Fig. 2 is a, top plan view, on a somewhat enlarged scale of the bed plate and associated parts with the cloth plate, throat plate and cover plate of a certain casing on the bed plate removed better to illustrate the parts more directly involved. I

Fig. 3 is a View in end elevation of the parts shown in the left hand end of Fig. 2 with the cloth plate shown in section and with a part of the needle shown better to disclose the relation of the same to the looper, loop spreader and feed dog.

Fig. 4 is a detail vertical sectional view through a part of the improved sewing machine mechanism as taken on the line 4-4 of Fig. 2.

Fig. 5 is a transverse detail vertical sectional view through a part of the mechanism shown in Fig. 2 as taken on the line 5--5 of said Fig. 2.

Referring now in detail to that embodiment of the invention, illustrated in the accompanying drawings:

I0 indicates, as a whole, the substantially elongated rectangular bed or base plate of the machine adapted for attachment in any suitable manner upon a support such as a bench or table not shown herein. Rising from said bed or base plate is an open top casing II of irregular shape and of a, substantial height. This casing includes a mechanism compartment I2 at one end and a combined overhanging arm supporting and connecting rod eccentric receiving compartment I3 at the other end, said compartments being separated by an upright apertured wall I4 extending forwardly and rearwardly of the bed or base plate. Engaging upon that portion of the casing forming the compartment I3 is the upright base portion I5 of a substantially horizontally disposed, hollow arm I6 that overhangs the longitudinal mid portion of the mechanism compartment I2. The open top of this last mentioned compartment is closed by a removable top or cloth plate I! in a dust and oil tight manner. This plate appears in Fig. 1.

The mechanism compartment which as before stated is of an irregular shape, includes' 1ongitudinally extending front, rear and intermediate walls I8, I9, 20, 2| and 22 respectively. The right hand end of the walls I8 and I9 join the wall I4 by means of front and rear, transverse wall portions 23 and 24. The left hand end of the wall I9 which is ofiset rearwardly from the wall 22, is connected to the right hand end thereof by a short wall portion 25 arranged parallel with the wall 23. The left hand ends of the walls 2I--22 are connected together by a wall 26, one portion of which extends at a right angle to said walls and the other portion of which extends at less than a right angle as best appears in Fig. 2. The right hand ends of! the walls 20, 2I are connected by a wall portion 2'! arranged parallel with the walls 23, 24 and 25. The left hand end portions of the walls I8 and 20 are connected by a rounded end wall 28. In the wall I8 is a gauge glass 29 and a drain plug 30.

The walls and wall portions 28, 2I and 21 define a recess 3| that is open at its left hand end and r in which as will later appear, are located the looper and loop spreader of the mechanism. Rising from the base plate near the open end of the recess is an upright needle boss 32.

Extending longitudinally of the base plate I 0 is a horizontally disposed shaft 33, which rotates continuously when the machine is in operation and constitutes the main drive shaft of the from the left hand end of the base plate.

On the right hand end is mounted a wheel 81 end in a substantially L shaped boss 39 rising In said boss are top and bottom oil ducts 39a39b that form an oil inlet and return from the interior of the chamber I2 to the bearing for the associated end of the shaft 38. In the chamber I2-and connected to the duct 39a is an oil inlet cup 390, all as best shown in Figs. 1 and 2.

The right end ofthe shaft 38 is. journalled in a bearing boss 40 formed at the junction of the walls I9 and 25. Fixed to said shaft end within the chamber I2 is an arm 4| having a crank pin 42. This crank pin has operatively connected thereto one end of a connecting rod 43, the other end of which operatively engages an eccentric 44, positioned on the main drive shaft 33 near the wall I4. From the above, it is apparent that the continuous rotation of the shaft 33 in one direction is translated into a rocking movement for the rock shaft 38.

To the rock shaft 38, near theboss 39 and outside of compartment I2, there are fixed longitudinally spaced, upstanding crank arms 45 carrying a crank pin 45a. Operatively engaged on said crank pin is'the rear end of a feed bar 46, the front end of which is made to operatively engage the eccentric 36 before mentioned. The front end of said feed bar carries a dog to project up through a suitable throat plate (not shown) carried by the plate I1. It is apparent that by reason of the crank pin 45:: and the eccentric 36, the feed dog will engage the material operated upon to feed the same rearwardly of the cloth plate H in the conventional manner.

41 and 48 indicate respectively, the rock shafts for the looper and loop spreader respectively. The loop spreader rock shaft 48 is journalled in hearing sleeves 49 and 50 respectively, that are integral with the casing walls I8 and 20 near the rounded end wall 28. This shaft which is disposed substantially horizontal, extends at an acute angle to the longitudinal median plane of the feed bar and in which plane is also located the U needle boss 32 on the base plate.

The looper rock shaft 41 which is'journalled near its ends in bearing sleeves 5| and 52 respectively, is arranged in substantially a horizontal plane and at an acute angle to the longitudinal median plane of the feed dog. The acute angle of said looper rock shaft, however, is somewhatdifierent from that of the loop spreader rock shaft 48. For imparting rocking movement to said rock shafts 41-48 in proper timed relation, the following construction is provided:

Secured to the base plate so as to be disposed within the chamber I2, is a bracket plate 53 which includes a pair of upstanding front and rear bearing bosses 54 and 55 respectively. Journalled near its ends in said bosses is a relatively short, horizontally disposed, continuously rotating crank shaft 56. This crank shaft isdisposed in a plane below and at a right angle to the main driving shaft 33 and is driven therefrom by worm gears 51 and 58 respectively. On

the front and rear ends of the shaft 56, outwardly beyond the bearing bosses are secured crank discs 59 and 60 respectively. Each disc carries on one side a crank pin 6I-62 respectively, each disc being suitably counterbalanced on that side opposite the crank pin.

To the loop spreader rock shaft, 68, between the bearing sleeves 38 and B, is secured an arm 63. Operatively connecting said arm and the crank pin 8! is a pitman or connecting rod 64%. This rod has ball and socket joint connections at its ends with said arm and crank pin to compensate for the relative angularity between the shafts 48 and 56; To the looper rock shaft ll between the bearing sleeves 5| and 52 in the walls 2! and 22 is secured an arm 65. Operatively connecting said arm and the crank pin 52 is a pitman or connecting rod 68. This rod also has ball and socket joint connections at its ends with said arm and crank pin to compensate for the relative angularity between the shafts M and 56.

It is apparent that when the chank shaft 56 is being driven from the main drive shaft, said crank shaft through the crank discs, pins, rods and arms mentioned, will cause a rocking movement of the looper and loop spreader rock shafts 61-48.

On the rear end of the rock shaft 58 is operatively secured a loop. spreader 6'7 and on the front end of the rock shaft 61 is secured a looper 68. If desired, a spreader loop retainer 69 may be employed on the shaft 18 in connection with the loop spreader. The looper and loop spreader just above mentioned cooperate with an associated needle later to be described, arranged axially of the boss 32 in forming the stitch which is an overcast or overedge stitch. In the formation of the stitch, the needle when descending carries its thread through the fabric or bagging to a point below the throat plate. is ascending, slack thread is formed which is forced out from the rear of the needle in the form of a loop which the looper 68 with its thread enters in passing from left to right. When the looper has reached the ends of its stroke to the right, the rocking relation between the two rock shafts ll and dB is so timed the spreader 61 rises and engages the thread at the front of the looper and carries it to the left of the needle. The needle on its next descent enters the loop of thread thus formed and which is then tightened in the fabric by the action of the looper as the next stitch is formed.

On the bracket plate 53 before mentioned, adjacent the gear 58, in the plane of and below the drive shaft, is an upstanding pump cylinder 10.

This cylinder communicates at its bottom with a' chamber II and opening into the top thereof are inlet and outlet valve fittings 12-43. Operatively engaged in the upstanding pump cylinder and open ng at its top end therethrough is a piston or plunger 14. The bottom end of said plunger is reduced in diameter to form a stem I5 and surrounding said stem between the bottom of the piston or plunger proper and the bottom of the chamber H is a. helical spring 16. This spring normally tends to impart an upward movement to the piston or plunger. On the main driving shaft 33 above the piston or plunger is fixed an eccentric 11 which in the rotation of the shaft engages the top end of the plunger and imparts the downward movement thereto. A thrust bearing 18 is provided on the main driving shaft between the bearing boss 34 and said eccentric 11.

By means of the eccentric and the spring 16 the piston is caused to reciprocate. On the upstroke thereof, under the action of the spring, some of the lubricant with which the chamber I2 is substantially filled is drawn into the chamber When the needle H through the inlet 12. On the downstroke of the piston or plunger, lubricant is forced out of the outlet 13 for discharge to desired bearings as will soon appear.

The left hand end of the hollow overhanging -5 bearings 8i and 82 for the needle bar.

Also mounted for vertical movement in the head, to the rear of the needle bar, is the presserfoot bar 83 carrying a presserfoot at the bottom end. 86, indicates the guide bar associated with the 'presserfoot bar. Removably secured to the bottom end of the needle bar 80 is a needle 85 for cooperation with the looper 68 and loop spreader 61 to form the stitch as before men-' tioned. Means (not shown herein) are provided whereby the presserfoot bars may be raised and lowered out of and into operative position.

Pivotally mounted in the hollow heat as at 86 is the rocking needle bar lever 817 including a relatively long load arm 88 and a power arm 89. The load arm is connected by a link and block 90 to the needle bar 80 at a point between the bearings BI and 82. The power arm of said lever is operatively connected by a ball and socket joint 9! to the top end of a pitman or connecting rod 92. The bottom end of this pitman or rod carries a strap for operative engagement with an eccentric 93 on the drive shaft, adjacent the right hand end of the bearing. It is pointed out at this time that the bottom wall of the hollow arm l6 slopes downwardly from the bearing 82 toward the upright base portion I5 to provide a drainage 4 of lubricant from the interior of said arm, toward said base portion and back into the compartments I 2 and i3.

In the top wall of the hollow arm between its ends is provided a lubricant manifold duct 94 which is connected to the outlet 13 of the pump by a tube 95.

Connected to the manifold duct 95 are tubes 96 and 98 respectively. The tube 95 leads to and discharges against the needle bar 80 near the top bearing 8| therefor. The tubes 91-98 lead respectively, to points to discharge upon the pivotal point 86 ofthe lever 81 and to the universal joint 00111120121011 9| between the load arm 89 of said lever and the top end of the connecting rod 92. The excess oil delivered to said bearings, is discharged into the hollow arm to drain back into the chamber I2 as before mentioned for reuse. In the hollow arm H5, at a point above the ball and socket joint 9! is a filler opening 99.

The machine, of course, is provided with the usual thread feed, tensioning and other devices necessary for the intended operation of the machine but as these form no part of the present invention, they are not described in detail although parts thereof appear in Fig. 1.

In operation, the compartments l2 and I3 are filled with a lubricating oil to a levelabove the drive shaft so that all hearings in the said compartments run in a bath of oil. In this respect, it is pointed out that the plate I1 and an associated gasket closes the compartment l2 dust and oil tight. With the looper, loop spread- P er and needle being arranged to operate in the 15 recess 3| outside of said compartment II, no dust, lint or foreign particles can enter the compartment l2 to foul the oil therein. Thus such dust and lint will be deposited or will accumulate on the base plate for ready and easy removal.

By the arrangement of the parts more directly associated with the rocking of the looper and loop spreader rock shafts, within the chamber l2, greater freedom and safety are provided for the operators arm beneath the overhanging arm as it removes said parts from beneath the overhanging arm l6. Also this arrangement provides for a better balance of the parts within 'said compartment for smooth and thus faster operation. Again, a built up crank shaft may be employed with a better bearing arrangement thereof, instead of a forged crank shaft as heretofore necessary. Thus this arrangement may be produced at a lower cost both for manufacture and assembly.

With the parts running in oil as described, bearing life is greatly increased and this, of course, reduces maintenance costs, servicings and also results in a more quiet operation.

While in describing the invention, we have referred in detail to the form, arrangement and construction of the parts as herein shown, the same is to be considered only' in the illustrative sense so that we do not wish to be limited thereto except as may be specifically set forth in the appended claims.

We claim as our invention 1. In a sewing machine, the combination of a base plate, a dust-proof casing thereon, a main drive shaft in said casing, a needle bar mounted for reciprocating movement toward and away from said base plate, a rockable looper and a rockable loop spreader arranged outside of the casing for cooperating with the needle in forming stitches, rock shafts for the looper and the loop spreader respectively arranged in the casing, means between said main drive shaft and the rock shafts for actuating the latter, and means in said casing providing lubricated bearings in which said main drive shaft and said rock shafts are journalled.

2. In a sewing machine, the combination of a base plate, a dust-proof casing thereon adapted to contain a lubricant, a main drive shaft in said casing, a needle bar mounted for reciprocating movement toward and away from the base plate,

. a rockable looper and a rockable loop spreader arranged outside the casing for cooperating with the needle in forming stitches, rock shafts for the looper and loop spreader respectively arranged in the casing and driven from said main drive shaft, and means in said casing proyiding bearings for. all of said shafts andwhich bearings are immersed in said lubricant.

3. In a sewing machine, the combination of a base plate, a dust-proof casing thereon, a main drive shaft in said casing, a needle bar mounted for reciprocating movement toward and away fromsaid base plate, a rockable looper and a loop spreader arranged outside of the casing for cooperating with the needle in forming stitches, rock shafts for the looper and loop spreader respectively, arranged in the casing, a driven shaft arranged at an angle to and driven by said main drive shaft, means between said driven shaft and the rock shafts for actuating the latter, and means in said casing providing lubricated bearings for said drive, driven and rock shafts respectively.

4. In a sewing machine, the combination of a base plate, a dust-proof casing thereon adapted to hold a lubricant, a main drive shaft in said casing, a needle bar mounted for reciprocating movement toward and away from the base plate,

a looper and a loop spreader arranged outside 5 of the casing for cooperating with the needle in forming stitches, rock shafts for the looper and loop spreader respectively arranged in the casing, a driven shaft arranged at an angle to and driven by said main drive shaft, means between said driven shaft and said rock shafts for actuating the latter, and. means in said casing immersed in said lubricant providing bearings for said drive, driven and rock shafts respectively.

5. In a sewing machine, the combination of a base plate, a dust-proof casing thereon adapted to hold a lubricant, a main drive shaft in said casing, a needle bar mounted for reciprocating movement toward and away from the base plate,

a looper and a loop spreader respectively arranged outside of the casing for cooperating with the needle in forming stitches, rock shafts for the looper and loop spreader respectively arranged in the casing, a driven shaft arranged at-an angle to and driven by said main drive shaft, a plurality of crank arms carried by the driven shaft, means between said crank arms and said rock shafts for actuating the latter, and means in said casing immersed in said lubricant providing bearings for said drive, driven and rock shafts respectively.

6. In a sewing machine, the combination of a base plate, a dust-proof casing thereon adapted to hold a lubricant, a main drive shaft in said casing, a needle bar mounted for reciprocating movement toward and away from the base plate,

a looper and a loop spreader respectively arranged outside of the casing for cooperating with the needle in forming stitches, rock shafts for the looper and loop spreader respectively in the casing, a driven shaft arranged at a right angle to said main drive shaft and driven therefrom, a crank arm on each end of the driven shaft, means between said crank arms and the rock shafts for actuating the latter, and means in said nected at one end to the needle bar, means in the other end of said arm and driven from said main drive shaft and connected to said lever for actuating the latter, mechanism arranged outside of the casing for coperating with the needle in forming stitches, means in said casing including shafts actuated from said main drive shaft for actuating said mechanism, a pump in said casing driven'from said main drive shaft, and means for delivering lubricant from the pump to the bearings for the needle bar and lever respectively and for returning lubricant from said arm back to the casing.

8. In a sewing machine, the combination of a base plate, a dust-proof casing thereon adapted to hold a lubricant, a main drive shaft in said casing, a hollow standard and arm supported on said base plate, a needle bar having bearing in one end of said arm for a reciprocating movement toward and away from the base plate, a needle bar lever pivotally mounted in said arm and operatively connected at one end to the needle bar, means in the hollow standard and driven from said main drive shaft and connected to said lever for rocking the latter, a rockablelooper and a rockable loop spreader arranged outside of the casing for cooperating with the needle in forming stitches, rock shafts for said looper and loop spreader respectively, means between said main drive shaft and rock shafts for actuating the latter, bearings in said casing for said shafts and immersed in said lubricant, a pump also in said casing driven from said main drive shaft and immersed in said lubricant, and means for delivering lubricant from said pump to the bearings for the needle bar and lever respectively and for returning lubricant from said arm back to the casing.

9. In a sewing machine, the combination of a base plate, a dust-proof casing thereon adapted to hold a lubricant, a main drive shaft in said casing, a needle bar mounted for reciprocation toward and away from the base plate, a feed dog arranged outside of said casing for cooperation with said needle, a rock shaft for said feed dog and arranged parallel with said main drive shaft, a bearing for one end of said feed dog rock shaft arranged in said casing, a second bearing for said feed rock shaft arranged outside said casing but having an oil duct communication with the interior thereof, a looper and a loop spreader arranged outside said casing for cooperating with the needle in forming stitches, rock shafts for the looper and loop spreader arranged in the casing, means in said casing between said main drive shaft and first mentioned end of the feed dog rock shaft for actuating the latter, means in said casing between said main drive shaft and the rock shafts for the looper and loop spreader for actuating said rock shafts, and means in said casing providing bearings immersed in said lubricant for the first mentioned end of the feed dog rock shaft, the main drive shaft and the looper and loop spreader rock shafts respectively.

10. In a sewing machine, the combination of a base plate, a main drive shaft jouralled thereon, a needle bar mounted for reciprocation toward and away from the base plate, a rockable looper and a rockable loop spreader arranged on the base plate for cooperating with the needle in forming stitches, rock shafts for said looper and loop spreader respectively, a shaft arranged at an angle to and driven from the main drive shaft and means between said driven shaft and said rock shafts for actuating the latter.

11. In a sewing machine, the combination of a base plate, a main drive shaft journalled thereon, a needle bar mounted for reciprocation toward and away from the base plate, a rockable looper and a rockable loop spreader arranged on the base plate for cooperating with the needle in forming stitches, rock shafts for said looper and loop spreader respectively, a crank shaft driven from the main drive shaft, crank pins carried by the crank shaft and means between said crank pins and said rock shafts for actuating the latter.

12. In a sewing machine, the combination of a base plate, a main drive shaft journalled thereon, a needle bar mounted for reciprocation toward and away from the base plate, a rockable looper and a rockable loop spreader arranged on the base plate for cooperating with the needle in forming stitches, rock shafts for said looper and loop spreader respectively, a second shaft arranged at an angle to the main drive shaft and carrying crank pins, gearing for driving the second shaft from the main drive shaft and means between said crank pins and said rock shafts for actuating the latter. 5

13. In a sewing machine, the combination of a base plate, a dust-proof casing thereon, a main drive shaft in said casing, a needle bar mounted for reciprocating movement toward and away from the base plate, a plurality of rock shafts arranged with portions inside the casing and with other portions outside the casing, means between said main drive shaft and those portions of said rock shafts inside the casing for actuating said rock shafts, means in said casing providing lubricated bearings in which said main drive shaft and said rock shafts are journalled, and means on said portions of the rock shafts outside the easing for cooperating with the needle in forming stitches.

14. In a sewing machine, the combination of a base plate, a dust-proof casing thereon, adapted to contain a lubricant, a main drive shaft in said casing, a needle bar mounted for reciprocating movement toward and away from the base plate, a plurality of rock shafts arranged with portions inside the casing and with other portions outside the casing, means between said main drive shaft and those portions of said rock shafts inside the casing for actuating said rock shafts, means in said casing providing bearings for all of said shafts and which bearings are immersed in said lubricant, and means on said portions of the rock shafts outside the casing for cooperating with the needle in forming stitches. S5

15. In a sewing machine, the combination of a base plate, a dust-proof casing thereon adapted to contain a lubricant, a main drive shaft in said casing, a crank shaft extending transversely of the main shaft and driven therefrom, a rock shaft 40 arranged with one portion inside and a second portion outside the casing, means between the crank shaft and that portion of the rock shaft inside the casing for actuating the rock shaft, means providing a part of a stitch forming mechanism on said second portion of the rock shaft outside the casing, and means in said casing providing bearings for said shafts and which bearings are immersed in said lubricant.

16. In a sewing machine, the combination of a base plate, a casing thereon adapted to hold a lubricant, a main drive shaft journalled in said I casing, means on said casing providing an upright hollow standard and overhanging arm communicating with said casing, a needle bar mounted in bearings in said arm for reciprocating movement toward and away from'the base plate, a rockable lever pivoted at a point between its ends in said hollow arm and operatively connected at one end to the needle bar, means in the hollow standard and driven from the drive shaft and connected to the other end of said lever for rocking the same, mechanism outside of the casing for cooperating with the needle in forming stitches, means in said casing between said main low arm and standard back into the casing.

, movement toward and away from the base plate,

a rockable lever pivoted at a point between its ends in said hollow arm and operatively connected at one end to the needle bar, means in the hollow standard and driven from said main drive shaft and connected tothe other end of said lever for rocking the same, mechanism outside of the casing for cooperating with the needle in forming stitches, means in said casing between said main drive shaft and said mechanism for actuating the latter, a pump in the casing and driven from said main drive shaft and having an inlet arranged below the level of the lubricant contained in said casing, a tube leading from said pump to a manifold in said hollow arm, and

tubes leading from said manifold, each to the needle bar, pivot for said lever and the connection between said other end of said lever and the means in the hollow standard.

18. In a sewing machine, the combination with a base plate, an upright wall on said plate providing a casing to hold a lubricant, a part of said wall being formed to provide a recess in said base plate outside said casing, a drive shaft in said casing, a needle bar mounted for reciprocating movement toward and away from the base plate, within the area of the recess, a rockable looper and a rockable loop spreader arrangement in said recess for cooperating with the needle in forming stitches, rock shafts for the looper and loop 16 spreader respectively, journalled in bearings formed in parts of said upright wall, but submerged in the lubricant, and means between said drive shaft and said rock shafts for actuating the latter.

GEORGE I. GOLDWYN. NATHAN WALDMAN.

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