US2424793A - Sewing machine - Google Patents

Description

July 29, 1947. F. w. BREUL I 2,424,793

SEWING MACHINE V Filed Sept. 5, 1945 s Sheets-Sheet 1 July 29, 1947. F. w. BREUL 2,424,793}

SEWING MACHINE Filed Sept. 5,1945 i s Sheets-Sheet 2 will- JreaLz ic ZZZ .l reu/Z v l/gy.

5 Sheets-Sheet 3 SEWING MACHINE F. w. BREUL.

Filed Sept. 5, 1945 July 1947.

Patented July 29, 1947 SEWING MACHINE Fredric W. Breul, Bridgeport, Conn, assignor to The Singer Manufacturing Company, Elizaboth, N. J., a corporation of New Jersey Application September 5, 1945, Serial No. 614,495

16 Claims. (Cl. 112-160) This invention relates to improvements in sewing machines and, more particularly, to sewing machines having work-surging mechanism for periodically indenting an edge of the Work being stitched, thereby to produce in the work a shelledge efiect.

The primary object of this invention is to provide a sewing machine with a simplified workedge indenting, or surging, mechanism adapted to lend itself to high speed operation of a sewing machine.

The invention has for a further oject to improve the work-feeclin characteristics of a sewing machine provided with a work-surging mechanism.

Another object is to provide a substantially unitary work-surging mechanism which may be readily applied to a standard type sewing machine with a minimum of alteration and expense.

With these and other objects in view, as will hereinafter appear, the invention comprises the devices, combinations and arangements of parts described in connection with the accompanying drawings, which illustrate a preferred embodiment of the invention and in which:

Fig. 1 is a front side elevation, partly in vertical longitudinal section, of a portion of a sewing machine containing the improved work-surging mechanism. Fig, 2 represents a transverse vertical section of the bed-plate of the machine, the section being taken substantially on the line 2--2 of Fig. 1. Fig. 3 is a bottom. plan view of the sewing machine; a portion of the bed-plate being broken away. Fig. 4 is a bottom plan view of the presser-foot of the machine. Fig. 5 is a detail view partly showing the presser-foot and feed-dog in side elevation and the throat-plate in section. Fig. 6 is a top plan view of a portion of the bed-plate of the machine, with the coverplate of the surging mechanism housing removed. Fig. 7 is a detail view, in front elevation and partly in vertical section, of the surging blade in its advance position with respect to the presser-foot of the machine; the section :being taken substantially on the lin 1-4 of Fig. 8. Fig. 8 is a top plan view showing the surging-blade, its carrier-block,- the hemmer-attachment and the work; the presser-foot being illustrated in dot-dash lines.

The present improvements have been embodied in a lock-stitch sewing machine of the class disclosed in the United States patent of S. Zonis, No. 2,267,581, December 23, 1941. The

sewing machine has a frame including a bedplate H), from one end of which rises the hol low-standard H of a bracket-arm terminating in a head l2. Journaled for vertical reciprocation in the head His a needle-bar l3 carrying at its lower end a needle M.

The needle I4 operates through a suitably apertured throat-plate l5, secured upon and forming with the bed-plate I0 a work-support. Disposed below the throat-plate l5 and complemental to the needle l4 in the formation of lock-stitches, is a rotary loop-taker N5 of the rotary hook type and having a thread-loop seiz in beak IT. The loop-taker l6 rotates twice for each needle-reciprocation and casts the needle-thread loops about a mass of under thread contained in a thread-case l8 journaled in the loop-taker and restrained against rotation therewith.

The loop-taker I8 is suitably secured upon one end of a horizontally disposed loop-taker shaft I9 which is rotatably journaled in spaced bearings 20 seated in a horizontally apertured bushing 2|. The bushing 2| is secured by a screw 22 in a wall 23 depending from the bed-plate 10; said wall 23 forming a portion of a gear-casing providing a lubricant-chamber 24. At its end opposite the loop-taker Hi, the loop-taker shaft l3 carries a spur-gear 25 disposed within the lubricant-chamber 24.

In mesh with the spur-gear 25 are teeth 26 provided internally of a flange 2''! of a driving gear-wheel 28; said gear-wheel 28 being disposed in the lubricant-chamber 24 and adapted to dip into a supply of lubricant contained in said chamber. The driving gear-wheel 28 is secured by a screw 29 upon one end of a horizontally disposed bed-shaft 30 which rotates once for each needle-reciprocation. The bed-shaft 30 is journaled, adjacent the gear 28, in a bearingbushing 3| secured in another gear-casing wall 32 depending from the bed-plate II]. Adjacent its opposite end, the bed-shaft 30 is journaled in a bearin 33 seated in a lug 34 depending from the bed-plate I0. Suitably secured upon the outboard end of the bed-shaft 30 is a peripherally grooved pulley 35 engaged by a driving belt 36 of the sewing machine in the usual manner.

The work is intermittently advanced across the work-support iby a differential feeding mechanism including a main feed-dog 31 and an auxiliary feed-dog 38, both of which feed-dogs operate through suitable feed-slots provided in the throat-plate 55. The main feed-dog "l engages the work entirely rearwardly of the path of needle-reciprocation and the auxiliary feed-dog 38 engages the work entirely in front of the needle-path. The main feed-dog 3'! is suitably secured upon a horizontally disposed main feedbar 39 and the auxiliary feed-dog 38 is suitably secured upon an auxiliary feed-bar 46 disposed substantially parallel to the main feed-bar 39; said feed-bars extending crosswise of the bedplate Ill and being respectively provided at the forward ends thereof with forks 4| and 42.

At its rearward end, the main feed-bar 69 is pivotally connected to the upper end of a rocker 43 rising from a main feed-advance rock-shaft 44 disposed horizontally below the bed-plate H) to extend lengthwise thereof. Engaging the opposite ends of the rock-shaft 44 are pintles 45 adjustably secured in lugs 46 and 41 depending from the bed-plate I0. Secured upon the rock-shaft 44, adjacent the lug 41, is a depending crank-arm 48 connected by a pivot bolt 49 to a pitman 59 having a strap embracing a feedadvance eccentric adjustably carried by the bed-shaft 30. The rearward end of the auxiliary feed-bar 40 is also pivotally connected to a feed-advance rocker 52 rising from an auxiliary rock-shaft 53 disposed rearwardly of and substantially parallel to the rock-shaft 44. The rock-shaft 53 is pivotally supported at its opposite ends by pintles 54; one of said ypintles being adjustably secured in the lug 46 and the other of said pintles being similarly secured in another lug 55 depending from the bed-plate l9. Adjacent the lug 55, the rock-shaft 53 is provided with a depending crank-arm 56 connected by a pivot-bolt 51 to a pitman 56 having a strap embracing an auxiliary feed-advance eccentric 59'adjustably carried by the bedshaft 3D. The eccentrics 5| and 59 are disposed adjacent each other upon the bed-shaft 39 and are generally similar in construction to the feed-advance eccentric disclosed more fully in the U. S. patent of W. Myers, No. 2,128,031, August 23, 1938.

The bed-shaft 39 also carries a feed-lift eccentric 60 which is embraced by the strap of a pitman 6|. The forward end of the pitman BI is connected by a pivot-bolt 52 to a depending crank-arm 63 at one end of a horizontally disposed feed-lift rock-shaft 64 mounted on pintles 65 which are adjustably secured in lugs 66 and 61' depending from the bed-plate |0. Clamped upon the opposite end portion of the feed-lift rock-shaft 64 are the split hubs of two feed- lift arms 68 and 69; the arm 68 carrying a roller 19 engaged by the main feed-bar fork 4| and the arm 69 carry a roller 1| engaged by the auxiliary feed-bar fork 42.

From the foregoing description, it will be understood that four-motion movements are imparted to the feed- dogs 31 and 38; the feed-dogs being raised and lowered in unison by the described connections with the feed-lift eccentric 69, while the work-advancing and return movements of said feed-dogs are derived from the adjustable eccentrics 5| and 59. By adjustment of the respective eccentrics 5!, 59, the feed-dogs 3'1 and 38 may be caused to have unison workadvancing movements, or eitherto full or stretch the work by imparting differential movements to the two feed-dogs.

In accordance with the present invention, the flange 21 of the loop-taker driving gear-wheel 26 is externally provided with spiral threads '52 to form a worm in driving engagement with the teeth of a worm-wheel 73 which extends downwardly through an opening 14 in the bed-plate IS. The worm-wheel 13 has its hub 7.5. secured by 4 7 screws If upon a cross-shaft Ti extending trans-' versely of the bed-shaft 3i] and disposed above the bed-plate Hi. The cross-shaft H is rotatably journaled in spaced bearing-bushings l8 and 19 secured in suitably apertured bosses formed in a generally rectangular housing bracket 96; the bracket 89 rising from the bedplate I9 and being suitably secured thereupon by screws 8!. The top portion of the bracket 66 is closed by a cover-plate 92 secured by screws, as 83; the joint between the bracket and coverplate being preferably sealed by a suitable gasket.

Also secured upon and for rotation with the cross-shaft ll, within the brasket 89, is an eccentric 84 embraced by the strap at one end of a pitman 85. At its other end, the pitman 85 extends between and is pivotally connected by a pivot-bolt 86 to the laterally spaced crankarms 81 of a, rocking sleeve 89 journaled upon a stub-shaft 99 which is suitably secured in the front and rear walls of the bracket 89. The sleeve 88 has a depending arm 99 which is forked to receive one end of a short link 9| pivotally connected to the arm 9|]. The link 9| is correspondingly connected by a pivot-screw 92 to one end of a horizontally disposed and endwise reciprocatory slide-bar 93. The slide-bar. 93 is journaled in an internal bracket-lug 94 and an external bracket-boss 95 for reciprocation transversely of the line of seam formation of the machine; said slide-bar 93 being disposed above the bed-plate l9 and substantially parallelto the bed-shaft 39. I

Secured to the end of the slide-bar. 93 proximate to the path of needle reciprocation is a carrier-block 96 having horizontally parallel upper and lower faces and provided longitudinally of the slide-bar with a vertical slot 91. Clamped by a bolt '98 to the carrier-block 96 is an edge-- wise vertically disposed work-edge indenting element or hem-deflecting blade 99 having its shank located in the slot 91 and terminating in vertically spaced ears I99 straddling the carrier-block 96. The shank of the blade 99 has a slot |0|Z elongated transversely of the line of scam formation and entered by the bolt 98, thereby providing for adjustment of the blade lengthwise of the slide-bar. As illustrated in Fig. 'I, the lower edge of the blade 99 is substantially in contact with the throat-plate i5 and the upper edge of said blade is downwardly inclined toward the free end of the blade, thereby to provide a narrowed work-engaging edge.

The feed- dogs 31 and 38 are opposed by a presser-foot sole-plate 192 having a needle-aperture I03 disposed rearwardly of and forwardly open to a blade-clearance slot H14 provided in the sole-plate to extend slightly beyond the needleaperture I93, as shown in Fig. 4; said slot I94 being disposed in alinement with the blade 99. The under or work-engaging face of the sole-plate I92 is preferably laterally stepped by cutting it away throughout the length thereof and from the blade-entrance side of the sole-plate edge to the remote side of the needle-aperture I09, to provide a work-clearance recess I95. In the region of the sole-plate slot I04, the recess I05 is enlarged to form a work-clearance notch |96 preferably extending across the entire width of the sole-plate. The sole-plate N12 is pivotally attached to the presser-foot shank i0! which is secured by a screw I08 to the lower end of a presser-bar I69 endwise movable in the bracketarm head I 2 and spring depressed in a conventional manner.

- work-edge indenting mechanism.

Disposed in front of the presser-foot sole-plate I02 is a conventional scroll hemmer Ilfl havin its shank Ill adjustably secured by a screw H2 upon the bed-plate ID. The delivery end of the hemmer III] is located to direct the hem-fold H, formed by the hemmer in the work W, under the sole-plate I92 at the recessed side thereof.

In the operation of the machine, the slide-bar 93 performs one complete reciprocation during the formation of a plurality of stitches, as for example six stitches. During its advancing movement, the blade 99 enters the presser-foot slot I04 and deflects the edge of the hem-fold H inwardly sufficiently far to cause the needle M to descend outside the hem-fold and thereby form a stitch extending over the edge of the work. The forward feed of the work, in connection with the action of the presser-foot, the return movement of the blade 99 and the resiliency of the material being stitched results in the needle again penetrating the work in its subsequent descent and until the hem-fold is again deflected by the blade 99. Consequently, the stitched work presents a scalloped or shell-edge appearance, as illustrated in Fig, 8 of the drawings.

As may be best seen from Fig. 4, the horizontal work-clearance notch I06 is located intermediate the ends of the presser-foot, thus to divide the sole-plate into a, forward portion I02 and a rear portion I02. From Fig. 5 it may be seen that the forward and rear portions of the sole-plate have respectively cooperating therewith the feed- dogs 38 and 31 which are disposed in tandem relation beneath the presser-foot. Thus the feed-dog 38 is effective to feed the work beneaththe presser-foot and the feed-dog 31 is effective to carry the work from beneath the presser-foot.

When the work-edge indenting element 99 is employed, it has a tendency to place the work which is beneath the presser-foot under a strain and thus stretch the same as the work is clamped at both the forward and rear portions of the foot. Therefore, the needle, being disposed directly behind the work-edge indenting blade, penetrates and forms stitches in the stretched portion of work. When the work is free of the presserfoot it will then have a tendency to pucker.

In order to obviate this objectional puckering, the present feed-dogs are timed so that the forward or auxiliary dog 38 is given a longer stroke than that which is imparted to the main or rear dog 31. The forward dog will then feed the work beneath the foot faster than the rear dog can feed it away, and therefore, an abundance of work will be disposed beneath the foot, Thus, when the work-edge indenting blade engages the work there will be no tendency to stretch the same and the stitches will be formed in an unstressed portion of the work.

It is to be understood that the above noted housing bracket or frame 80, when detached from the sewing machine, contains the entire In order to adapt a standard type sewing machine for receiving this substantially unitary structure, it is only necessary to provide the bed-plate I9 with an aperture 14 and to furnish the machine with a special presser-foot and a, driving gear-wheel 28.

Thus the present work-edge indenting mechanism comprises a substantially self-contained unit which may be readily applied to a standard type sewing machine without involving any great expense or undue effort.

The described hem-deflecting mechanism is structurally simple and compact, and is particularly well adapted for high speed operation, as the mechanism housed by the bracket is constantly and adequately lubricated by the oilthrowing action of the driving gear-wheel 28 which comprises an actuator common to the looptaker and the hem-deflector,

Having thus set forth the nature of the invention, what I claim herein is:

1. In a sewing machine having a frame providing a Work-support, in combination, a reciprocatory needle, a rotary loop-taker complemental to said needle in the formation of stitches, workfeeding mechanism, a work-edge indenting element mounted for reciprocation crosswise of the line of seam formation in the region of the path of needle-reciprocation, a rotary actuating shaft disposed below said work-support, a driving member carried by said shaft, means operatively connecting said driving member with said rotary loop-taker for rotating said loop-taker at a speed greater than that of said rotary shaft, and means operatively connecting said driving member with said work-edge indenting element for reciprocating the same.

2. In a sewing machine, in combination, a reciprocatory needle, a rotary loop-taker complemental to said needle in the formation of stitches, work-feeding mechanism, a work-edge indenting element mounted for reciprocation crosswise of the line of seam formation in the region of the path of needle-reciprocation, a driving gearwheel, means for rotating said gear-wheel, operative connections with said gear-wheel for imparting to said loop-taker a, plurality of rotations for each reciprocation of said needle, and operative connections with said gear-wheel for imparting to said work-edge indenting element a less num ber of reciprocations than are imparted to said needle.

3. In a sewing machine, in combination, a reciprocatory needle, a rotary loop-taker complemental to said needle in the formation of stitches, work-feeding mechanism, a work-edge indenting element mounted for reciprocation crosswise of the line of seam formation in the region of thepath of needle reciprocation, a driving gear-wheel, a pair of driven gears in mesh with said driving gear-wheel, means for rotating said loop-taker from one of said driven gears, and means actuated by the other of said driven gears for reciprocating said work-edge indenting element.

4.. In a sewing machine, in combination, a reciprocatory needle, a rotary loop-taker com-- plernental to said needle in the formation of stitches, a rotary loop-taker shaft, work-feeding mechanism, a work-edge indenting element mountedfor reciprocation crosswise of the line of seam formation in the region of the path of needle-reciprocation, a rotary actuating shaft, a driving gear-wheel carried by said actuating shaft, said gear-wheel having an internally toothed flange externally provided with a wormthread, a pinion-gear carried by said loop-taker shaft in mesh with the internal teeth of said gearwheel, a worm-wheel engaged by the wormthread of said gear-wheel, and means actuated by said worm-Wheel for reciprocating said workedge indenting element.

5. In a sewing machine having a frame providing a work-support, in combination, a reciprocatory needle, a rotary loop-taker disposed below said Work-support and complemental to said needle in the formation of stitches, feeding mechanism for advancing work across said work-support, a Work-edge indenting element mounted for reciprocation above said work-support and crosswise of the line of seam formation in the region of the path of needle-reciprocation, a driving gear-wheel disposed below said work-support, means for rotating said gear-wheel, operative connections with said gear-wheel for rotating said loop-taker, a driven gear in mesh with said driving gear-wheel and rotatably journaled above said work-support, and operative connections with said driven gear-wheel for reciprocating said Work-edge indenting element.

6. In a sewing machine, in combination, a work-support, stitch-forming mechanism including a reciprocatory needle, work-feeding means, an edge-indenting element disposed above said work-support and mounted for reciprocation crosswise of the line of scam formation in the region of the path of needle-reciprocation, a rotary actuating eccentric disposed above said work-support, means for rotating said eccentric, a pitman embracing said eccentric, and a twoarmed rocker having one of its arms operatively connected to said pitman and the other of its arms operatively connected to said edge-indenting element.

7. In a sewing machine, in combination, a work-support provided with an opening, stitch forming mechanism including a reciprocatory needle, work-feeding means, an edge-indenting element disposed above said work-support and mounted for reciprocation crosswise of the line of seam formation in the region of the path of needle-reciprocation, a gear-casing depending from said work-support and providing a lubricant chamber, a driving gear-wheel housed by said gear-casing and adapted to dip into a supply of lubricant in said chamber, a driven gear in mesh with said driving gear-wheel and extending through said opening in the work-support, actuating mechanism disposed above said work support and operatively connected for reciproeating said edge-indenting element from said driven gear, and a casing housing said actuating mechanism.

8. In a sewing machine, in combination, a work-support, stitch-forming mechanism including a reciprocatory needle, work-feeding mechanism, an edge-indenting element disposed above said work-support and mounted for re ciprocation crosswise of the line of seam formation in the region of the path of needle reciprocation, a rotary actuating eccentric disposed above said work-support, operative connections with said eccentric for reciprocating said edgeindenting element, casing means above said worksupport for housing said eccentric and said operative connections therewith, a lubricant-supply chamber disposed below said work-support, and means rendered effective upon operation of the machine for rotating said eccentric and for supplying lubricant from said chamber to said operative connections with said eccentric.

9. An edge-indenting unit for sewing machines comprising, a frame, a reciprocatory slide-bar journaled in said frame, a hem-deflecting blade carried by one end of said slide-bar, a crossshaft journaled within said frame crosswise of said slide-bar, an eccentric mounted upon said cross-shaft for rotation therewith, a pitman embracing said eccentric, means operatively connecting said pitman with said slide-bar for actu- 10. In a sewing machine having a frame including a work-support provided with an opening therein, a reciprocatory needle, and an actuating shaft journalcd beneath said work-support; the improvement which consists in the provision of a unitary edge-indenting mechanism removably secured upon said work-support, said unit comprising a frame member, an edge-indenting element mounted within said frame member for reciprocation crosswise of the line of scam formation in the region of the path of needle-reciproca tion, a rocker-element mounted upon said frame member for actuating said edge-indenting element, and means carried by said frame for actuating said rocker element, said last named means being adapted to project downwardly through said work-support for operative connection with said sewing machine actuating shaft.

11. In a sewing machine having a frame including a work-support provided with an opening therein, a reciprocatory needle, and an actuating shaft journaled beneath said work-support; the improvement which consists in the provision of a unitary edge-indenting mechanism removably secured upon said work-support, said unit comprising a frame member, an edge-indenting element mounted within said frame member for reciprocation crosswise of the line of seam formation in the region of the path of needle-reciprocation, a cross-shaft mounted within said frame member, an eccentric mounted upon said crossshaft, means operatively connecting said eccentric with said edge-indenting element, and means operatively connected to said cross-shaft, said last named means being adapted to projectdownwardly through said work-support opening for connection with said sewing machine actuating shaft.

12. In a sewing machine, in combination, a work-support, a reciprocatory needle, a presserfoot disposed above said work-support and having a sole-plate provided transversely thereof with a work clearance notch which divides the Working surface of said sole-plate into forward and rear portions, a pair of feed-dogs disposed in tandem relation directly below said presserfoot for operation through said Work-support, said feed-dogs being disposed in cooperative work-feeding relation with the respective forward and rear presser-foot sole-plate portions, means to impart differential feeding movementsto said feed-dogs, a work-edge indenting element mounted for reciprocation crosswise of the line of scam formation in the region of said work clearance notch, and means to reciprocate said work-edge indenting element.

13. In a sewing machine, in combination; an apertured work-support, a reciprocatory needle, a presser-foot disposed above said work-support and having a work-clearance notch formed intermediate the ends and transversely of the soleplate portion thereof so as to divide said soleplate into forward and rear portions, said presserfoot being provided with a needle-aperture located adjacent said work-clearance notch, a pair of independently operated feed-dogs disposed in tandem relation directly below said presser-foot and beneath the upper surface of said worksupport, said feed-dogs being disposed in cooperative work-feeding relation with the respective presser-foot sole-plate portions located at either side of said work-clearance notch, a work-edge indenting element mounted for reciprocation crosswise of the line of seam formation and positioned in line with said work-clearance notch, and means to reciprocate said work-edge indenting element in a timed relation with said needle reciprocations.

14. In a sewing machine, in combination, an apertured worksupport, a reciprocatory needle, a presser-foot disposed above said work-support and having a work-clearance notch formed intermediate the ends and transversely of the soleplate portion thereof so as to divide said soleplate into forward and rear portions, said presserfoot being provided with a needle-aperture located adjacent said work-clearance notch, a pair of feed-dogs disposed in tandem relation directly below said presser-foot and beneath the upper surface of said work-support, said feed-dogs being disposed in cooperative work-feeding relation with the respective presser-foot sole-plate portions located at either side of said Work-clear-.

ance notch, means to impart feeding movements to said feed-dogs, said means being adapted to impart a longer feeding stroke to that feed-dog disposed beneath the forward sole-plate portion of the presser-foot than to the other feed-dog, a work-edge indenting element mounted for reciprocation crosswise of the line of seam formation and positioned in line with said work-clearance notch, and means to reciprocate said workedge indenting lement in a timed relation with said needle reciprocations.

15. In a sewing machine, in combination, an apertured work-support, a reciprocatory needle, a presser-foot disposed above said work-support and having a slot formed intermediate the ends and transversely of the sole-plate portion thereof so as to divide said sole-plate into forward and rear portions, said presser-foot being provided with a needle-aperture located adjacent said slot, a work-edge indenting element mounted for reciprocation crosswise of the line of seam formation and positioned in line with said slot, means to reciprocate said work-edge indenting element within said slot in a timed relation with said needle reciprocations, a pair of feed-dogs disposed in tandem relation directly below said presserfoot and beneath the upper surface of said worksupport, said feed-dogs being disposed in cooperative work-feeding relation with the respective presser-foot sole-plate portions located at either side of said slot, and means to impart feeding movements to said feed-dogs, said means being adapted to impart a longer feeding stroke to that feed-dog disposed beneath the forward sole-plate portion of said presser-foot than to the other feed-dog,

16. In a sewing machine, in combination, an apertured horizontal work-support, a reciprocatory needle, a presser-foot disposed above said work-support and being provided with a horizontal work-clearance notch formed intermediate the ends and transversely of the sole-plate portion thereof so as to divide said sole-plate into forward and rear portions, said presser-foot having a vertical slot formed therein adjacent to and in parallelism with said work-clearance notch and a needle aperture disposed therein adjacent to and rearwardly of said work-clearance notch, a work-edge indenting element mounted for reciprocation crosswise of the line of seam formation and positioned in line with said slot, means to reciprocate said work-edg indenting element within said slot in a timed relation with said needle reciprocations, a pair of feed-dogs disposed in tandem relation directly below said presser-foot and beneath the upper surface of said work-support, said feed-dogs being disposed in cooperative work-feeding relation with the respective presser-foot sole-plate portions located at either side of said work-clearance notch, and means to impart feeding movements to said feed-dogs, said means being adapted to impart a longer feeding stroke to that feed-dog disposed beneath the forward sole-plate portion of said presser-foot than to the other feed-dog.

' FREDRIC W. BREUL.

REFERENCES CITED UNITED STATES PATENTS Name Date Fowler Apr. 9, 1940 Number

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