US61270A

US61270A - Improvement in sewing-machines

Info

Publication number: US61270A
Authority: US
Publication date: 1867-01-15
Anticipated expiration: 1884-01-15

Description

3 SheetsSheet 1.

I. M. SINGER. SEWING MACHINE.

No. 61,270. Patented Jan. 15, 1867.

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I. M. SINGER. SEWING MACHINE.

No. 61,270. Pa ter lted Jan. 15, 1867.

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' 3 Sheets-Sheet3. I. M. SINGER. SEWING MACHINE.

No. 61,270. Patented Jan. 15, 1867 mz "cams FH'ERS co" Pum'ouma, wAsumcmN, n. c.

UNITED STATES PATENT OFFICE.

ISAAC MERRITT SING-ER, OF YONKERS, NEW YORK.

IMPROVEMENT IN SEWING-MACHINES.

Specification fornn'ng part of Letters Patent N 0. 61,270, dated January 15, 1867.

To all whom it. may concern:

Be it known that I, ISAAC Mn RRITT SINGER, of Yonkers, in the county of VVestchester and State of New York, have invented certain new and useful Improvementsin Sewing-Machines and that the following is a full, clear, and exact description of the same, reference being bad to the accompanying drawings, in which- Figure 1 represents a side elevation of a sewing-machine embodying my improvements.- Fig. 2 represents an elevation of the opposite side of the machine. Fig. 3 represents an elevation of one end of the same, with certain portions removed. Fig. .4 represents a plan of the members of the machine beneath the tableplate. Fig. 5 represents a plan of a portion of the tableplate. Fig. 6 represents a plan of the thread-tension and adjacent parts. Fig. 7 represents a cross-section'of the needle-arm at the position of the thread-slackener, and Figs. 8 to 12 represent views of detached parts of the machine denoted by the same letters as the corresponding parts in the other figures.

.The improvements which constitute the subject-matter of this patent'have reference to the sewing mechanism, thread con trolling and tension mechanism, and feed mechanism of sewing-machines, and particularly of the centraldelivery oseillating'shuttle machine described in niy previous patent, dated the 11th day of December, A. D1866; and although I believe the best result will be attained when all my improvements are combined in the same machine, some of them may be used separately from the others when such-separate use may be expedient.

The object of, the first improvement. or part of my invention is to enable the needle-bar and the stem of the presser-foot to be made round, that being the least costly form of construction, and nevertheless to be prevented from turning in their bearings. This part of my invention consists in combining a round needle-bar and a round presser-foot stein by means of sliding brackets, in such manner that the bar forms a guide which prevents the stem from turning, and the stem forms a similar guide for the needle-bar.

The object of the second part of the inven tion is to guide the shuttle while it is entering;

the loop of needlethread without subjecting it to the rubbing action of a shuttle-guide. This part of my invention consists of the combination of a' reciprocating spring shuttle-holder with a shuttle-guide, in such manner that'the former, while moving with the shuttle, is caused to bear strongly agaiustthe shuttle by the action of the shuttle-guide at the time the shuttle-point is entering the loop, so that the shuttle is relieved of the rubbing of the shuttleguide by the interposition between the two of an instrument (the "shuttle-holder) which moves along with the shuttle, and'consequently does not rub it.

The object of the third part of the invention is to enable anoscillating shuttle to be constructed with its point in the same plane, or thereahout, as one of its sides, and nevertheless permit the shuttle-thread to diverge from that plane as it extends from the point of sewing to the delivery-eye of the shuttle. This part of the invention consists of the combination of the shuttle with a projecting threadguide at its flat side, so that the delivery-eye, by which the sh little-thread leaves the shuttle, and which is the eye at theend of the projecting thread-guide, is held out at some distance from the flat side of the shuttle.

The object of the fourth part of the invention' is to permit the use in the sewing-machine of an oscillating shuttle with a projecting threadguide; and it consists in the construction of the support or guide-block for the flat side of the shuttle with acentral opening, and a slot extending from that opening toward the throat for the needle, so that the projecting shuttle-guide may oscillate in the central opening, and that the shuttle-thread may extend from the threat in a line diverging from the track of the needle-point.

The object of the fifth part of the invention is to obtain a broad wearing-surface at the butt of the oscillating shuttle; and consists of the construction of the shuttle with an ear projecting at its butt beyond the socket for the bobbin.

The object of the sixth part of the invention is to hold the shuttle-bobbin in its place in the shuttle and permit its ready removal and replacement. This part of the invention consists of the combination of the shuttle with a spring-ring fitted to an annular groove in'the mouth of the bobbin-socket.

The object of the seventh part of the invention is to produce tension uopn the shuttle thread by the same instrument that holds the bobbin in place; and consists of the combination of the shuttle with a spring-ring fitted to an annular groove in the mouth of the bobbin socket, and provided with abranch which bears against the bobbin, so that the sprin g-rin g both holds the bobbin and makes pressure upon it.

The object of the eighth part of the invention is to prevent the contact of the metallic surface of the bobbin with the metallic surface of the side'of the shuttle; and consists of the combination of the shuttle with a lining of paper, cloth, or similar material in the bottom of its bobbin-socket, so that the said lining is interposed between the surfaces of the bobbin and bobbin -socket.

The objectof the ninth part of the invention is to prevent the contact or the ed go or periphcry of the bobbin with the rim of the bobbinsocket of the shuttle; and consists of the combination of theshuttle with a hoop-lining of paper, cloth, or similar material, in the rim of the bobbin-socket, so that the said hoop lining is interposed between the edge or periphery of the bobbin and the rim of the bobbinsocket. l

The'object of the tenth part of the invention is to enable the several sections of a sectional thread-tension to be quickly adjusted; and consists of the combination of two or more such sections with one movable bar or stock, so that a the movement of that one-bar varies the pressure of the several sections simultaneously.

The eleventh part of the inventionhas reference to the take-up for takiiig up the slack needle-thread left by the passage of the shuttie; and consists of the combination of the arm of the-take-up with the stock thereof-by an ad: justable connection, which permits the effective length of the arm to be readily adjusted.

The objectof the twelfth partof the invention is to permit the extent towhich the 1na= terial is fed when it is to be sewed in opposite directions to be easily determined rand consists of the combination of the regulating-lever of a reversible-feed mechanism with a stop carried by said lever, so that the adjustment of a single stop determines the extent of feed in reverse directions.

The thirteenth part of the invention consists of the combination of a turning regulatingplate (for reversing the feed'of the sewing-machine) and the feeding-instrument by means of a reciprocating bar bent in such manner that the pins or parts upon which the strain of feeding is borneare at or about the same level,

- v i. support the material to be sewed, a yielding presscr-foot, B, pressed toward the tableplate by a spring, so as to hold the material with a yielding pressure, ,avertical reciprocating needle-bar, G, to carry an eye-pointed needle, to thrust it downwardthrou'gh the material, and to withdrawit therefrom, and it is provided lbeneath'the.table-plate with a shuttle to interloop a second thread with the thread thrust through the work by the needle. The needle bar or carrier (3 is supported in guides at the end of the needle-arm- D, which is mounted upon the bed-plate of the machine, and this needle-bar is driven by a. revolving crank-wrist which projects from the face of a disk, E,'secured to the revolving shaft F, is covered with a friction-roller, G, to reduce the friction, and works in thegroove of a transverse block, H, I

secured to the needle-bar,.so that the revolutionof the shaft F causes the needle-bar to rise and descend in alternate succession, there'- by thrusting thencedle downward through a passage or throat, a, formed in a throat-plate, I, (secured to the table-plate of the machine,) and raising it therefrom. The needle-bar G is a round bar, and the stcmB of the presserfoot B is also round, bars of round cross-section being more readily formed (by turning) than bars of any other cross-section. Each of these round bars is omhined with the other in such manner that the other acts as a guide to prevent it from turning on its axis, and thereby misplacing the needle or the prcsser-foot. The combination is efi'ected by means of a bracket, J, secured to the needle-bar,and fit ted to slide upon the stem 13 of the presserfoot, and a second bracket, J, secured to the stem B of the presser-foot, and fitted to slide 'upon the needle-bar, so that the stem B of the presser-foot B' holds the needle-bar from turn ing through its bracket J, and the needle-bar holds the presser-foot from turning through its braeket J'." V

The presser-foot B is made removable, so that it may be readily removed and replaced by a foot specially adapted to the particular kind of work to be done-as, for example, a hemmerfoot or a corder-foot,'sueh as is represented at To this end the opposite sides of the Fig. 8*. lower extremity of the stem B are flattened, so

as to form a flat: tcnon, b, and the shank of thepresserfoot is perforated with a slot, 1), to fit upon this tenon. The tenon' also is perforated transversely to admit a tapering pin, D which,

being driven into the tenon below the shank of the presser foot', secures it firmly to the stem.

The, pin may be readily removed when the" screw, a, which passes through a center hole in the throat-plate and secures it to the tableplate. A throat-plate of this construction permits the operator of the machine to chan ge the throat operating with they needle, and thus adapt the throat to the size of the needle to be used, whereby the material is supported more closely to the needle when a fine needle is used than is possible in machines having a single throat, which must of necessity be large enough to permit the operation of the largest needle which may be used in the machine. The throat is surrounded by one or more raised concentric rings or circular ridges, e, which indent themselves into the under surface of the material to be sewed when it is lowered by the sinking of the feed-plate K, and form a hollow center, upon which the material may be turned, whether the needle bein or out of it. The ridge also acts as a holder to prevent the material from slipping when the feeding-instrument is 'rctrograding, and relieves the needle of transverse strain during thatperiod.

The shuttle L is situated beneath the tableplate of the machine. It is thin and broad, is supported edgewise in its place, and is provided with a flat spool or bobbin, L, upon which the shuttle-thread is wound. The shuttle, when the machine is at rest,is supported bya curved plate, m, whose ends form two drivers, 0 and c, which project from the face of a disk or hulo, M, that is secured to a shaft, N. This shaft is caused to rock by connecting a wrist-pin, d, projecting from the driver-hub M, with the lower end of a lever, O, which is pivoted in a recess in the needle-arm, and is provided at its upper end with a pin, 0, that runs in acamgroove, 0 formed in a cam, 0 secured to the needle-shaft F. (The connection between the lower end of the lever O and the driver wristpin dis a connecting-rod, d,) Hence, when the shaft F is caused to revolve and operate the needle, the driver-disk M is caused to rock and move the shuttle to and fro in harmony with the needle by the alternate action of the drivers c c, and the motions of the needle and shuttle are so timed (by the form and set of the groove of the shuttle-cam 0 that the needle rises slightly before the point of the shuttle is caused to pass its line of motion, so that the needle-thread is caused to spread laterally from'the needle for the entrance of the point of the shuttle, as is customary with shuttlemachines. The shuttle is so broad that its lower edge extends down to the axis of the rock-shaft or thereabc-ut, so that the shuttle,-

when moved by the drivers, is caused to oscillate, and the axis upon which it oscillates (which is the axial line of the rock-shaft N) is at or near its lower edge. The shuttle is guided vertically in its oscillation by a shuttlerace, consisting of a curb, m, projecting from a block, P, which is arranged opposite to the face of the hub M of the shuttledrivers, and maintains the shuttle erect upon one side; and

in practice the movement of the shuttle is so rapid, and the radius of the curb is so small that a sutficient amount of centrifugal force is generated to cause the shuttle to rise and bear against the curb, thereby keeping its front and of aspring, f, which is secured to the hub of the shuttle-drivers and oscillates with them;

but the range of motion of this spring toward the adjacent side of the shuttle is limited by arranging it to pass through a hole in theplate m a part of which thus forms a stop,f, so that the face of this spring-holder is not permitted to move-nearer to the face of the block 1? at the opposite side of the shuttle than a distance predetermined by the position of the stop, and the stop is so set that this distance is a little greater than the thickness of the shuttle added to twice the thickness of the coarsest needle-thread the machine is adapted to use. Hence the shuttle is left loose in its place during the greater part of its movement for its ready passage throughthe loop of needie-thread, but is held from escaping laterally by the full force of the spring-holder f wheneverit tends to move beyond its proper bound. In order that the shuttle-point may occupy precisely the same position relatively to the needle whenever it enters the loop of needlethread, a shuttle-guide, f, is provided to bear the shuttle closely against the face of the block Patthat period. This shuttle-guide is secured to the block 1? with its point in such a position relatively to the shuttle-holder f that the shuttle-holder enters between the-shuttle and shuttle-guide when the shuttle is completing its backward movement, and the face of the guide is at such a distance from the face of the block P that the shuttle-holder is borne-by the shuttle-guide toward the block P, and is thus caused to press the shuttle closely to the block during the latter part of its retrograde move ment, and the first of its forward movement when the shuttle-point is passing the needle.

As soon as the shuttle-point has passed the needle the short distance requisite to insure the seizure of the needl'e'thread,-the shuttleholderf passes out from between the shuttleguide and the shuttle, and leaves the shuttle loose. This mode of combining the shuttleguide with the shuttle-holder relieves the shuttle of the wear produced by rubbing directly against the shuttle-guide, because the shuttleholdcr moves with the shuttle, and is' interposed between the shuttle and the shuttle guide.

The shuttle is provided at itscenterlof oscil lation, or thereabout, with an eye-guide'for-the passage of the shuttle-thread from it to the the spring a.

material, so that the length of thread extending from the shuttle to the material .is prac tical] y always the same, whatever be the position of the shuttle, and consequently no slack the plane of oscillation of the shuttle-point, so

as not to be split by the former, or to be in the way of the latter. It is desirable, also, that the shuttle should have a broad wearin gsurface at the side which is brought in contact with the block P by the action of the shuttle-guide. In order that these two requirements may be obtained in the machine, the delivery-eye of' the shuttle is formed in a projection, 9. that extends laterally from that side of it which is nearest the block P, and constitutesaprojectin g threadguide for the shuttle. An opening, g, is formed in the block P to permit this projecting threadguide to oscillate in, and a slot, g is made from this opening to the table-plate above for' the passage of the shuttle-thread hence the shuttle-point 1 may be located in the plane of that side of the shuttle which is nearest the guideblock 1?, and yet the shuttle-thread (extending to the projecting thread-guide of the shuttle) diverges sufliciently from the plane of oscillation of the shuttle-point and the track of the needle-point to be out of the way of both. This arrangement of the shuttle-point permits that portion of the side of the shuttle which is in advance of the bobbin-socket and faces the guide-block P to be made flat, so that it forms a broad wearing-surface where the shuttle rubs against the guide-block or'side support P. In order to obtain a similarweariug-surface at the butt of the shuttle, an-ear, L, is formed upon it, so that the wearing-surface of the shuttleis enlarged by the addition of the surface of the ear.

The bobbin L is held in its place in the socket of the shuttle by means of an open spring-ring, n, which is fitted in a shallow annular groove formed in the mouth ot'the socket. This spring- .riug bobbin-holder is also, employed to press one or more disks of packing (denoted by the line s, Fig. 10 against the side of the bobbin, and thereby retards its revolution, so as to' make tension upon the shuttle-thread; Forthis purpose the spring-ring holder is formed with one or more branches, s, which project over the side ofthe bobbin; orit may be formed in an open coil, as shown at Fig. 12, with single branch,

5. The tension may be varied by varying the number of thicknesses of paper interposed.between the side of the bobbin and the branch of In order that the friction may be equable, and that there may be no surfaces of metal in'rubbing contact, the bottom of the bobbin-socket in the shuttle is lined with one or more disks, (denoted by the line 1", Figs. 10 and i0 3) and the rim of-the socket is lined with a hoop of the same material, as denoted by the line rh'Fig. 10. This hoop-lining is conveniently held in its place by introducing itsends through ja'slit into a hole, r drilled transversely through the shuttle, and securing them there by the insertion of a wooden peg between them.

The method above described of packing the sides of the bobbin in its socket in the shuttle enables the operator to use bobbins of different sizes, as thedifierence in size may be made up by the insertion of a greater or less number of thicknesses of paper or other'packin g material. The operator can thus use a thin bobbin for fine thread in a shuttle adapted to receive a thick bobbin for-coa rser thread, there'- by maintaining the thread at a more uniform distance from the eye 6, by which the thread passes from the bobbinsocket. If found expedient, one or more of the thicknesses of paper may be slightly greased to reduce the friction somewhat.

The needle-thread-is' drawn from a spool, Q,

which is applied to a standard, R, secured to the needle-arm D. It is so drawn from the spool by means of athread slackener, and passes from it to a thread-tension,whence it passes to a-take-up mechanism before being conducted to the needle'eye. The threadslackener consists of a lever, S, which is pivoted to the needle-arm D, extends tranversely over the needle-shaft F, and has an eye in its end, through which the needle-thread ispassed. The needle-shaft immediately beneath the lever S is partially cut away on one side, so that it forms a cam, which alternately permits the lever todescend and compels it to rise. The thread from the spool is passed through a fixed eye,.p, secured to the needle-arm below the end .of the lever S; thence it is passed upward to and through the eye of the lever S, and is returned downward through the same fixed eye upon the needle arm. The needle-thread, after passing the second time through the fixed eye, is inserted in the thread-tension T. This apparatus is composed of a series "ot'springs, t t t pressed toward a fixed plate, t, by means of a hinged bar, 1 to which the springs are secured, and which is moved by a thumb-screw, t so that the pressure of the springs may be adjusted simultaneously by turning the screw t There is also a swinging gate or nipperjaw, t, at the end of the tension at which the thread enters, and it is pressed toward the fixed plate or jaw t by a slight spring, 2 so as while it permits the thread to be drawn easily forward toward the eye t, at which it issues from thread-ten sion.

other, so that the drawing of it through the apparatus in the forward direction, as indicated by the arrow in Fig. 6, is resisted by the friction due to the pressure of the swin gin ggate and of the springs, each of which resists its The thread is introduced between the swinging gate t and springs t t t on one side, and the fixed plate t on. the

uvand the arm u. v

needle-arm, and is provided with the projection not materially change the aggregate resistance of all the tension-instruments, and consequently does not materially change the tension at the sewing-point, because the knot aii'ects but one section of the tension at a time, and the difference in the pressure of that one is but a small fraction of the entire pressure. As the springs or sectional tension-instruments t t t are all connected with one movable bar, i they may all be adjusted at one operation by the turning of the screw t, which is a very convenient arrangement.

.-The swinging nippcr-jaw t prevents the withdrawal of the thread in a backward directionfrom the thread-tension; hence, whenever thefloop of thread t", extending through the eye of the lever S, is made too short, by the passageof the thread to the thread-tension, to permit the rise of the lever S,'such rise extendsthe loop by pulling an additional quantity from the spool. The rise of the lever is so timed (by the form of the lever-cam) relatively to the movement of the needlethat the lever is left down when the needle is drawing thread through the tension; hence the lever then permits the thread to hang. loose and slack for the thread-tension, and is a vibrating thread-slackener.

';-.,.The take-up, for taking up the slack needlethread left by the passage of the shuttle through the loop carried through the cloth by theneedle, consists of alever, U, to which a vibrating motion is imparted by a cam, V, secured to the hub E of the needle-shaft, and a spring, U, which acts antagonistically to that cam V. The lever is made adjustable in length by constructing it of two parts-via, the stock The former is pivoted to the a upon whichthecam operates. The arm has an eye, a formed at its upper end for the thread. Its lower end is inserted intoa perforation in the stock, and is secured there, with its eye a at any desired position from'the pivot, by a clam pscrew, a, which also forms the bearing of the spring U. The thread,- passing from an eye, t, at the end of the thread-tension, is conducted backward to and through the eye a of the take-up, and thence is returned in a for ward direction and passed through an eye; guide, 19, secured to the upper forward end or the needle-arm, whence it passes down to the eye of the needle. A loop of needle-thread is thus held by the takeup, which gives it up as the needle descends, and as the shuttle enters and extends the loop of thread presented to ittle has passed through the loop. The form of the cam V is such as to permit the forward movement of the take-up lever, and to effect its backward movement for these purposes at the proper times.

The material to be sewed is, moved forward at intervals (when the needle is not in it) by means of a toothed f'ecd-bagK, whose toothed head K moves in an opening in the table-plate of the machine, and is pressed upward against the under side of the material sufliciently to indent its teeth in it, and to raise it above the circular ridge 0 of the throat-plate I by means of a cam, it, formed upon the rim ofthe disk or hub M of theshuttle-drivers. After the material has been moved forward the cam, passing by the feed-bar, permits it to descend in its opening and lower the material upon the throat-plate,where it r'e-engages with the circular-ridge e when the ridge is used. Materials of difierent character require the feed-bar to rise difierent distances to be fed to the best advantage. In order that the present machine may be adapted to feeding to the best advantage every material itis adapted to sew, a wed geformed block, k, is introduced between the cam k and the feed-bar K, and means are provided tomovc the block in the direction of its length, so as to introduce a thicker or a thinner part of it between the cam and the feed-bar, and there, by cause the feed-bar to rise more or less, depending upon the position of the wedge-blockwhich thus regulates the rise of. the feedbar. The wedge-block is secured to a link, k which is pivoted to a bracket, in, that is secured by a screw, k, to the under side of the table-plate of the machine. The screw passes through a slot in the bracket, so that when the screw is slacked the bracket may be moved to move the wedge-block lengthwise to the required position, and then it may be clamped fast'by retightening the screw. For convenience of operation, the screw is formed with a square head, so that a socket key orwrench can be applied to it.

The feed-bar is caused to move horizontally, for the purpose of feeding the material and returning to take a new hold of it, by the lateral movement of a bar, WV, to which a reciprocating movement in the direction of its length is imparted by means of a cam, W and a spring, 711. The cam W is formed upon one end of the shuttle-driver cam 0 and it operates upon the reciprocating bar W through the intervention of an upright lever, W whose lower end bears against a pin, a, projecting from the side of the reciprocating bar. The spring cooperates directly upon the reciprocating-bar W, and antagonistically to the cam W. Oneend of the reciprocating bar is guided longitudinally by means of a guide-pin, n, that is received in a longitudinal slot in the reciprocating-bar. The

other end of the reciprocating bar is forked to embrace a pin, n projecting downward from by the needle, andtakes it up after the shuti the feed-bar K, so that the movement of the bar in the direction of its length alone does not, aflect the feed-bar. The lateral movement of the feed-bar is effected, as described in my patent dated the 11th day'of December, 1866, by a regulating-plate, X, which is arranged to turn on its center in a socket in the table-plate, and is perforated with a slot, :20, in which a pin, a, projecting upward from the reciprocating bar W works, the slot .12 being set at a greater ing-lever, Y, which is connected with the regulatingplate X by means of a link, as, that is pivoted at one end to the lever, and at the other toan car, 00 projecting'from one side of the regulatinplatc. When this leveris placed perpendicularly to the line of the link: so, the

slot of the regulating-plate X isin line with the. reciprocating bar W. Then thelatter has no lateral motionimparted to it, and consequen tl y the feeding bar is not moved longitudinally, and does not' feed the material. When the lever Y is moved to one side of that perpendicular position, the regulating-plate is turned, and its slot crossesthc central line of the reciprocating bar in one directiomthereby causing that bar and the feeding-instrument to feed the material in one direction, and when the lever Y ismoved to the other side of its perpendicular position, the'regulating-plate X is turned to present its slot crosswise to the central line of the-reciprocating bar W, but in the opposite direction to the previous one, so that the feed is reversed. The distance -to which the lever Y is moved in either direction from-its perpendicular or central position determines the extent of feed by setting the regulating-plate at a greater or less inclination to the central line of the, reciprocating bar, and thereby causing the latter to move laterally to a greater or less extent. It is frequently desirable that the extent of feed in opposite directions should be the same when-the direction is reversed,'and that the feed mechanism may be readily set for this purpose. In order that the feed mechanism of the machine I am describing may be so set, asliding stop, Z, is applied to the regulating and reversing lever Y, and is connected with it by a clamp-screw, a, which may be slackened and tightened to loosen and clamp the stop. Thisstop, when set in any position, limits the extent of feed by striking the edge of the table-plate A of the machine, and limiting the movement of the lever Y; and as the stop is attached to the lever, it is carried by it in whichever direction it is moved, so that one stop limits the movement of the lever in both directions from its central position, and consequently determines the extentof feed in both directions. As the lever Y has a long radius in the present, machine, the edge of the table-plate in the vicinity of the lcveris made V-formed, as shown in dotted lines at Fig. 4, so that the stop must be moved a greater distance than it otherwise would have to he to permit a given extent of feed, and consequently le'ss accuracy is required in setting the stop.

The pins n n of the feed-bar and of the re- I ci procating bar constitute hearin gs upon which the strain of the feed is sustained. In order that these pins n a maybe at about the same level, notwithstanding the attachment of one to the feedbar and the other to the reciprocating bar, the end of the reciprocating bar W is bent upward, as seen'at 10 in Fig. 1, so that the strains upon thetwo pics at a are at equal distances from the reciprocating bar, and consequently there is no material tendency to rock it.

'Having thn'sdescribed a machine embodyingall my improvements, what I claim as my invention in sewing-machines, and desire to secure by Letters Patent, is-

1. The combination of a round needle-bar.

and a round presser-foot stem by means of sliding brackets, substantially asset forth.

2. The combination of a reciprocating spring shuttle holder with a shuttle-guide in such manner that the former, while moving with the shuttle, is caused, during a part of its movement, to press strongly against the shuttle by the action of the shuttle-guide, substantially as set forth;

3. The combination of a shuttle constructed to oscillate in a sewing-machine with a projecting thread-guide for the delivery of thread, substantially as set forth.

4. The construction, in a sewing-machine, of

the lateral support for theoscillating shuttle witha central opening, substantially as set forth. I

'5. The shuttle constructed'with anear projecting at its buttbeyond the bobbinsocket, substantially as setforth. 6. The combination of the shuttle with a spring-ring so arranged-asto hold the bobbin in its socket in the shuttle, substantially as set forth. 1 7. The combination of the shuttle .witha spring-ring provided with a branch to make pressure upon the bobbin,subst antially as set forth.

8. The combination of the shuttle with a lining in the bottom of its bobbin-socket,.substantially as set forth.

9. The combination of the shuttle with a hoop-lining in its bobbin-socket, substantially as set forth.

10.. The combination of several sections of a sectional thread-tension with one movable stock, substantially as set forth.

11. The combination of the arm of the thread take-up with its stock by means of an adjustamachine by means of a bent reciprocating bar, ble eonneetiom substantially as set forth. substantially as set forth.

12. The combination of the regulating lever In testimony whereof I have hereunto set of a reversible-feed mechanism with a stop car: in y hand this 3d day of November, 1865. ried by said lever, substantially as set forth. Witnesses: .ISAAO MERRITT SINGER.

13. The combination of the turning regulat BENAJAH LEFFINGWELL, ing -plate and feeding-instrument of a sewing- INSLEE A. HOPPER.