US37617A - Improvement in sewing-machines - Google Patents

Description

' 3 Sheets-Sheet?.- G. L.- DULANEY.

. Sewing Machine. j

No. 37,617. Patented Feb.'1'0,'1863. 'f

#my Five-f N. FEIERS, Fhemmhngmphnr, washington. D. C. I

` 3 Sheets--fSheet 3. G. L. DULANEY. A SewingA Machine.

Patented' Feb. 1o, 1863.

UNITED STATES PATENT OEETCE.

GEORGE L. DULANEY, OF MOUNT JACKSON, VIRGINIA.

IMPROVEMENT IN SEWING-MACHINES.

Specification forming part ot' Letters Patent No. 372,617, dated February 10, 1863.

lo all whom it may concern:

Be it known that I, GEORGE L. DULANEY,

' of Mount Jackson, in the county of Shenandoah and State ofVirginia,ha\-'e invented and made certain new and useful Improvements in Sewing-Machines; and I do hereby declare that the lollowing is a full, clear, and exact description ot' the same, reference being had to the accompanying drawings, making a part of this specin'cation, inv which- Figure 1 is a right-hand elevation of the machine. Figure 2 represents a left-hand elevation of the machine. Fig. 3 represents a front elevation of the machine. Figt represents a reverse view ot' the pedestal clothtable, with shuttle and the peculiar shuttlecarrier and feed devices. Fig.5 represents the needle detached.

The nature ot' my improvements relates more especially to the construction and operation of the needle-bar; secondly, to the manner ot causing thefeed motion; thirdly, to the manner of actuating the shuttle; fourthly, to the manner of causing the tension; fifthly, to the manner or 'mode of taking up the slack thread.

The better to enable others to construct and use my improvements, the following is a full description thereof:

At a a c (t, Figs. 1 and 2, is represented a suitable bed-plate or platform, mounted, if desired, on suitable supports or legs, b b b b, or attached to any suitable stand or table to work the machine, if desired, by a treadle. To the platform is cast a standard, c 0, to which is connected in suitable bearings the main coggear driving-wheel d d and the small pinion gear-wheel e e, both working into each other, and attached by theirjournals or axles on the outside of the standard. The axle of the small wheel or pinion extends horizontally through the standard, and the fly or balance wheelff is confined on the axle ofthe pinion and on the inside ofthe standard cc, as shown in Figs. 1 and 2,the axle extending suflciently to work through a short standard, g, and to the end of the axle, on the outside ot' the standard, is aftixed a disk or circular plate, 71, h, the balance-wheelj'fand the disk h h extending down through suitable openings formed in the bed-plate or platform a au a.

At t' t t' t', Figs. l and 2, is shown a side View of a striding or arched-like standard, which is formed with a short arm, J. Said standard is detachable, and is continedin position by tenons in the bed-plate and keyed orV pinned on the under side, as at K K. To the upper end ot' said standard is attached a cross-head piece, L L, formed With a mortise to tit over the short arm J. This short arm has two mortises formed on both sides, as indicated by the dots at m it, Figs. 1 and 2.

At O O is a pedestal-standard formed with shoulders P P and tenon ends keyed through the platform t et, as indicated at 1' r o" r. This pedestal-standard has cast or formed onto its upper end a curved table-plate or cloth-support, s s s s, and is also formed with a larger longitudinal slot, tt, and a smaller slot, w. The cloth-support s s is formed with a slot, o, at the dots, Figs. 1, 2, 3.

At 'w 'w is indicated a vertically-arranged sliding needle bar formed with an upper curved or arched like end` X X, and a lower elbow-like continuation, Y Y, with a forearmextension, z z, and a finger-like extremity, 85 &. This peculiar needle-bar is formed ot' one continuous piece, its main length working vertically immediately behind the arched standard t' t, Figs. 1 and 2, fitting in the mortises m m n, as dotted in Figs. 1 and 2, the elbow or lower portion, Y Y, and the forearm z z being titted to work in notchesin the platform, and indicated by dots c2, the linger'- like extremity St & being bent through the slot t t of the pedestal-standard o o. The needle-arm w tu has its arched part formed with a head and set-screw to hold the needle, as indicated at b2. On the end ofthe needlebar is a small yoke-like device, c2, formed wit-h two small eyes on the left side and one eye on the right.

At e2 e2, Figs. 1 and 2, is indicated a suitable connection-rod, attached by its ends to the disk h It, and to the long arm of the needlebar w fw. On its left side ofthe arched part is attached by a small fulcrum or pivot a curved shape vibrating lever or slack-take-up device, f2f2, with bent end g2 and a small eye, h2, formed through the upper end, as in Figs. 1, 2.

At t2 i2 is indicated the oscillating shuttledriving lever, of curved shape, with a straight interval, K2 K2, Fig. 4. This shuttle-driver is formed with a shuttle-carrier, P2 P2, and is connected to the lower part, g, ofthe pedestal f o o P P by a screw or pin-axis, L2, Figs. 1, 2,

4, and, passing upwardly through a slot, m2, rests within the fork or crotch n2, Fig. 4, and continuing upwardly beneath the clot-htable s s to receive the shuttle o2 o2 within the carrier P2 P2 of the shuttle-driver fi2'7c2, the

- shuttle being held or supported laterally by the side of the race q2 g2, Figs. 3 and 4. The shuttle-carrier is also supported by a lateral guide bar or staple, r2, Figs. 1, l2, tf Attached by a suitable axis, s2, to the side of the shuttle-carrier arm is a gravitating pendent shuttle-adjuster, t2 t2, formed with a bowed end, a2, Figs. 3 and et. rlhis bowed end rests upwardly within a slot or a depression formed in the under side of the shuttle o2,`and indicated by dots in Figs. 3 and 4.

At O3 Oa is indicated the gravitating feed device ofthe curved shape shown, its butt end formed with an elongated opening, P2, extending vertically, and through which passes the pivot or i'ulcrum-serew g4, and whereby the feed device is attached to the outside ot' the pedestal o o, Fig. 3. The upper end of this 'feed device is serrated or notched, as indicated at r3, Fig. 3, and works freely in the slot \V of the cloth-table s s. Through the short curved end of thc feed device O3 ()3 is an adjusting or stitch-regulating screw, s.

At 1:2 c2 102102 is indicated a curved au d arched like vertically-arranged gravitating stripperbar or pressure-pad, the lower end passing downwardly through the platform a a, as at v2, and formed with a notch, V, in which, it' found necessary, may be employed a suitable spring, V5, to produce greater force or pressure ofthe pad against the material to be sewed. To this stripper bar or pad is attached aca-m or eccentric-lever device, :r2 m2, and at Y2 is attached a suitable curved bar, to the end of which is a small dependeut,z2, formed ot'alength of ilexible wire bent together, forming a small delicate fork-like device; or a solid strip ot' metal may be split longitudinally and the ends thereof opened or slightly extended so as to insure the desired purpose and to act as grip or takeaffixed to a horizontal spindle, c, formed withscrew-thread, and said spindle is attached to the end ot' a vertical stud, d2, which is inserted in the cross-head L L. On the horizontal spindle is a suitable nut or adjusting-tap, e, In the cross-head at]s is inserted a smaller stud,

g its upper end formed with an eye, g2. At b2 is indicated the spool ot' thread on the spindle i2, inserted in the leg of thc standard 'i i'.

In my improvement to he operated by a treadle the platform a a is designed to be attached to a larger stand or table of any desired shape and size.

The operation of myimprovcments is as follows, viz: The material to be sewed is arranged on the table s s, so as to bear or press oft' forward and in front from theoperator. The thread from the spool is carried in the direction indicated by the red dotted line t, and passed through the eye g3 to the right, as at t, under and around and over the railials b2 b3 b3 b3 of the rotating tension a3, then to the left downwardly, as at ti", and returned through the eye g2, and upwardly through the eyes d2 d2 of the needle-bar, thence on the inside through the first left-hand eye of the yoke-like device c2 upwardly and through the eye h2 of the vibrating lever or slack-take-up device-f2f2, thence downwardly on the right sidc aud through both the outer holes ot' the yoke device 02 c2 to the left side, and finally into the Veye of the needle J3, Fig. l. The machine bcing set in motion by the handle A A, the main wheel working into the pinion c, the whole mechanism is thereby set in motion, the disk h l1. communicating action to the connectingrod c2 c2, which causes the needle-bar W W X X Y Y to slide up and down, when the needle J3 descends, entering the material and passing entirelythrough it, extending below the clothtable s s, so as to form the loop at the required time to admit the passage of the bobbin in the shuttle O2 O2.

In Fig. 1 the needle-bar W X Y Z is shown as heilig up in position to its extent, with the needle J2 in position, ready to descend. The finger-like formation Yor feed-striker, Src., of the needle-har l NV is shown pressing up against the head of the screw s3, which lifts thc feed-har o3 o3, pressing it upward and to the* let'tat the same time against the material on the clotch-table s s, the gra'vitating stripperbar or pressnrepad W2 W2 W2 also pressing down on the top ofthe material.

It will be observed that in the extended p0- sition of the needle-bar the shuttle 02 02 is to thelett-hand edge ot' the cloth-table, and in position, as indicated in Figli. As the needlebar XY X YZ descends to its utmost position, asin Fig. 2, the needle is shown as having penetrated the material and extending through andv beneath the cloth-table s s where the loop of the needle-thread being formed, the thread ofthe shuttle is passed through said loop, the shuttle being in position to the right, as indicated by the dotted representation ofthe shuttlc-carrier P2 P2 Fie. 4 and thus as the needle alternattly enters the material and the shuttle passes to and from through the loop the threads are inter-locked, the stitches formed and the sewing produced.

rlhe peculiar features, however, ot' my improvements are the following: The needle-bar W X YZ, &c., being formed of one continuous single piece of metal, and, because of its peculiar shape, made to perform the fourfold oftice of actuating the needle J3, impelling the shuttle-driver 2 K2, operating the feed-bar device o3 P3, and also carrying with it and operating the vibrating lever or slack take-up f2 f2. This slack-take-up devicef2 thus connected on an axis to the side of the needle-bar moves therewith, and, in passing upwardly, the deected end g2 strikes against the small staple g4, by which means the eye end h2 of the same is raised or thrown upward,describing a short curve, and thereby drawing up the slack thread of the needle, so as to prevent undue length anti spread ot' the loop. As theneedlearm descends the vibrating lever f2 is carried 'down with it, the straight part ff2 bearing against the small staple g4, thus preventing further vibration until the needle-artn is again carried up.

It will be observed also that the shuttletl fi? has a straight part, K2., which is designed to cause a cessation or slight interval of motion of the shuttle, the object of which intermittent office is to keep the shuttle at rest sufficiently long to allow the needle to pass to its utmost extent without coming in contact with the shuttle.

With reference to my improved feed-motion device O3 P3 it will be observed that it is partly self-acting by its inherent gravity, and being suspended on its fulcrum bythe elongated hole, having suticient play up and down and laterally so as to describe somewhat cf an oblique double movement, by which means the material being sewed is pressed upwardly against the pressure-'pad W? W2, and forward horizontally from the operator, and after thus moving and returning` to its original position the feed device O3 Pa falls beneath the material,thereby releasing it at the required time, and thus alternately feeding the material regularly and affording the required stitch. This feed device may be so regulated by the setscrew s3 as to give any desired length of stitch. Thus, for instance, if the screw s3 is turned to the right, the stitch is shortened, and if to the left the stitch is lengthened, owing lto the lingers St & continuing more or less against the screw.

, Another feature ofimprovement is the pendent gravitating self-acting shuttleadjusting device s2 t2 t2, the object of which is to lift the shuttle slightly, and thereby accom modate the shuttle to the curved sweep or stroke of the shuttlecarrier P2 P2, and prevent any undue sweep or play ofthe shuttle in the race q2 q2, the bow part a2 u2 bearing up and within the slots or depression in the under side of the shuttle, as indicated at u2 in (lots, Fig. 4.

Anotherpeculiarfeatureofmyitnprovemendts is the little gripper or nger device z2, Fig. 1, which is designed to grip or. hold up the slack thread of the needle J3, should there loe too much slack tension. As the needle-bar \V X Y moves upwardly the cross-thread in the front holesv of the yoke device c2 c2 is forced vbetween the grip ends, as at z3, Fig. 2,`

and is held up until the needlewithdraws from the materia-lon the table s s, thus most eifectually preventing any undue slack of the tension. v

Another novel feature of improvement is the rotating radial tension device a3 b3 b3, which is regulated by the set-screw or nut e3 e3, Fig. 3, which, being turned more or less, tightens the tension. By having the radials b3 b3 the thread is caught or held at intervals. Thus should any inequalities occur the tension is not interfered with, as would be the case if a continuous grooved disk or wheel were used, which method is employed in many improvements in sewing-machines; and another feature of my improvements is the shuttle, formed with a groove or a slot on its under side, as indicated by the line a4, Fig. 4. This slot or depression is to receive the bowed adjuster u2 u2, soas to adjust the shuttle to its place, as hereinbefore alluded to.

Having set forth, shown, and described my several improvements in sewing-machines, aud desiring'to secure the same by Letters Patent of the United States, what I claim as'ot1 my own invention is as follows, viz

`l. The vertically-acting needle-arm composed of one piece of metal, as indicated at W X Y Z, Ste., Figs. l, 2, which performs the several different offices or mechanical functions' as herein set forth and described.

2. The special construction of the intermit- `tent-acting shuttle-carrier device i2 lo? p2 r2,

Fig. 4, together with the gravitating self-acting shuttle-adjusting device s2 t2 102, Fig. 4, as shown and described. I

3. The gravita ting self-adjusting feed device o3 o3 p3 g4, Fig. 3, constructed and operated in the manner described.

4. The self-acting gravit-ating pad o2 o3 vz wz, as constructed, and combined with the self-acting gravitating feed device 03 03193 g4, the lever device :r2 x2, and the curved bar or tension device y2 y2, with the small dependent flexible fork-like device v2, Figs. 1, 2, substantially as set forth, shown, and described.

5. Constructing the shuttle o2 o2 with the bottom slot or depression, o4, Fig. 4, and the cotnbination therewith of the gravitaring selfacting shuttle-adjusting device s2 t2 to2, Fig. 4, substantially as set forth and described.

6. The vibrating lever or slack-thread adjusterfzr2 g2, Fig. l, as constructed, operated, and combined with the needle-bar or arm XV X Y Z, Figs. 1, 2, substantially as set forth and described.

7. The curved bar or tension devices y2 y2 z2, Figs. 1,2, 3, singly or in combination with .the vibrating leverorslack-taket1pdevicefzfzg2 h2, so as to produce the desired effect, in the manner as set forth, shown, and described.

8. The flexible rotating radial tension device a3 b3 c3 d3, Figs. 1, 2, as constructed, set forth, and described.

snol-ten L. DULANEY. [L s] Witnesses SAML. KINGUE, G. H. H. Kooivtrz.

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