USRE3776E - Improvement in sewing-machines - Google Patents

Description

UNITED STATES PATENT OFFICE.

P. J. OLEVER, OF GOLIAD, TEXAS.

IMPROVEMENT IN SEWING-MACHINES.

Specification forming part of Letters Patent No. 96,886, vdated November 16, 1869 Reissue No. 3,776, dated December 28, 1869.

To all whom it may concern Be it known that I, P. J. OLEVER, of Goliad, in the county of Goliad and State of Texas, have invented a new Improved Sewing-Machine; and I do hereby declare that the fol-r lowing is a full, clear, and exact description thereof', which will enable others skilled in the art to make and use the same, reference being had to theaccompanying drawings, forming part ot' this specification.

This invention relates to improvements in sewing-machines, and has for its object to provide more useful and eicient machines than those now in use.

The invention consists in the combination and arrangement of the operating devices, as hereinafter described.

Figure 1 represents a longitudinal sectional elevation of my improved machine. Fig. 2represents a transverse sectional elevation taken on lines :v a: of Fig. l. Fig. 3 is a detail showing a side elevation of the devices for operating the feed device and arranged to feed in either of two directions. Fig. 4 is an elevation ot' the same at right angles to the elevation of Fig. 3 and partly'sectioned. Fig. 5 is a det-ail showing the shuttle and shuttle-carrying arm and the connecting-rod for operatingr it. Fig. 7 is a detail showing the arrangement for throwing the friction driving-wheel into or out of gear with the friction-wheel on the crank-shaft. Fig. 8 is a front elevation of the tension device. Fig. 9 is a'detail showing the arrangement of devices introduced between the crank-shaft and the needle-arm for working the latter; and Fig. l() is a sectional elevation of the needle-arm and cloth-presser support, showing the arrangement ofthe needle-arm and tension-spring.

Similar letters of reference indicate corresponding parts.

The treadle A has semicirenlar recesses to lit the rods of frame A', and it is held in position to be operated by a lever, A, having a curved recess at one end, A3, that tits the rod of said frame under the recesses ot' the treadle, and at the other end the lever is provided with aturn-button,which, after passing through a slot in the treadle, is turned transversely thereof to lock the clamping-lever.

Fig. 6 is a plan view of the feed-shoe.v

The treadle is connected to a lever-arm, A6, by a connecting-rod, which rod is wrist-jointed to both said treadle` and lever-arm, as plainly shown in Figs. 1,2. This arm is fixed to a shaft, A7, rocking on points screwed in frame A. The other end of said arm *is at A8 wrist-jointed to a connecting-rod, A9, and this rod isA also wrist-jointed to a crank of crankshaft A10. All this construction and arrangement has for its purpose that the treadle may be unlocked by the turn-button and loosened by the clamp, so that it may be raised at the rear from its frame and turned on awrist-joint to either side or one end, to be fastened and locked again on said frame, so that the machine may be worked at either side or end of the table.

The connecting-rod A9 is slotted at its ends,

forming open spring-like ends, which tit and are closed by screws on the ball-shaped end'of the lever-arm AG and the crank ofcrank-shaft A1", and, owing to this construction, the joints may be adjusted to compensate for wear.

The crank-shaft Al, on which is mounted a friction driving-wheel, All, turns on adjustable bearings or points held by set-screws in frame B, hinged at one end, B, within thetable-frame, and at the opposite side said frame is capable of rising and falling, and has a lixed bar, B2, resting on an eccentric plate, B3, pivoted to a hanger, B5, secured to a bar, B5, fixed within the table-frame and` provided at its upper end with a screw and nut for adjusting the height ofthe hanger. l

The plate B3 1s provided with a cam and a handle for turning it, and so that amovement inone direction will raise and the other lower the frame B, so that the driving-wheel and friction-Wheel B7 are thrown in or out of contact. When the frame is down the driving-wheel may be revolved without giving motion to the other parts.

Under the bar B6 is a spring, B4, bearing on bar B2, fixed to frame B, to give a downward pressure to the frame.

The friction-Wheel B7 is constructed of a metallic box,iittingloosely on crank-shaft B8. This box has one fixed round metallic plate at onev -to the under side ofthe table. f also a globular headed wrist-pin', to connect india-rubber round plates of larger diameter than the metallic plate may be arranged with their centers on said box between the metallic plates and permanentlysecured by the screwed nut. i

The friction-wheel B7 clutches with a ratchetclutch, B11, connected to the crank-shaft B3, so as to impart rotary motion to it, but capable of sliding on it to and from the wheel, and provided with a spring, B12, to keep it up against the clutch on the'wheel. This arrangement is provided, so that if the drivin g-wheel is turned the wrong way the clutches will slip and will not turn the crank-shaft.

B13 is a balance-wheel on crank-shaft B3, and B14 a friction brake-lever, pivoted at B15, and provided with a rod, B15, rising up to the unider side of the table-plate, through which a ringer-stud, B17, with a socket in the bottom for the reception of the upper end of the rod B15, works, so that the operator may bring the brake into contact with the wheel by pressing down thereon.

The linger-stud B11 rests on but is not conil ected positively' with the rod B15, in order that the table-plate, which is hinged on one side,

may be raised when required.

The brace B13 and sleeve BI9 are provided for holding the table-plate when raised. The brace is pivoted at the upper end to the under side ot' the table and at the lower to one side within the table-trarne and jointed in the middle. The lower part of the brace has a slight curve, to allow the two parts to lie together when the table is down, and the upper part of the lower brace, above the pivoted point of connection with the upper brace, is beveled, so that as the table is raised and the brace straightened the curved part will raise the sleeve, to afterward drop down and hold the braces together when inl line.

'The crank-shaft B11 is movable on adjustable points in the ends held by set-screws in the brackets B9 and F5, and has two inside cranks, C and D2, which are connected to the other parts by two con nectin g-rods, C and D3. Each rod is composed of two pieces, constructed as shown in Figs. 5 and 9, held together by one Yscrew and adjustable so as to compensate for Weill.

The crank G is connected by the rod C' with a pin oran oscillating plate, C3, fixed to a shaft,

'02,-and oscillating on pointed adjustable bearings held by set-screws in a support screwed Said plate has withv a connecting-rod, G4, on one side, to prevent twists on the bearings, and thereby reduce friction.

, The connecting-rod Cf* is formed, like the rod I A2, to tit the ball-shaped parts of the oscillaty ing plate G3 and needle-arm U5.

This arm has a txed axis, resting on points in the plates at each side of the needle-arm support.

ln Fig. l0 are shown double springs, below C", under the needle-arm, by which said arm is arrested at the ends of each movement.

C5 represents the vibrating thread-tension spring, pivoted to the needle-arm support at O1, and connected to the needle-arm by a link.

The springs C3 and C13 in Fig. 1 has the same Aeffect as the double springs G3 have in Fig. 10;

but by the former the link G11 must have ajoint, which in the latter case is unnecessary.

The shuttle-carrier D has at its lower end a journal, D', which rests and oscillates on adjustable bearing-points held by set-screws in brackets. The shuttle is carried between the forked springs D5, at the upper end of the arm D, and the arm is curved so thatit may be arranged in aperpendicular direction to the crankshaft B3 and the needle-arm support to provide room for the feeding mechanism.

Dl1 is the shuttle in its spring-forks D6 ofthe curved arm D. y

The face of the plate D5 is provided with a vertical groove for the needle, so th at the loops from the needle project out of the said recess beyond the point of the shuttle.

The tension device for the shuttle-thread is a spring,D3, bearing on one end, D3,of the bobbin, and is adjusted by a set-screw, D10, passing through the upper side ofthe shuttle, and guarded, so as not to catch the thread, by curved wire guard D11. This screw may be reached for adjusting it, by a screw driver, through a slot ofthe table covered by a slide, D12.

E is a feed-shoe, the upper faceof which-is plainly seen in Fig. 6. Itis the upper end of a vertical bar, E', supported on its carrier E2, so as to slide up or down thereon. lt is slotted at E3, and slides on a pin, E4, of the carrier E2, and has a pin near its lower end and that rests in an eye on the upper leaf of a double spring, E5, Y pivoted at E1 to the carrier E2, and ar ranged so that it bears the lower leaf on cam E"I on crank-shaft B3. In the end of the upper leafof said spring E5 isan adj Listing-screw, E3, with its lower end bearing on the end of the lower leaf,for raising the upper with the ver tical bar E on it more or less to adjust the height ot' the feed-shoe, and the lower leaf is provided with two holes, in which a leather strip is arranged, so as to bear on cam E2, and so that it may easily be renewed.

The carrier E8 is particularly curved, that it may be out of reach ofcani E7 or crank-shaft B3, and also be used as a support for the pivot E5 of spring E5, and is joined at the lower end with a curved arm, F, pivoted on shaft D', projecting at/ equal distances from said shaft, and provided with notches in the ends. In front of this carrier is an inverted-Vsl1aped frame, F12, pivoted at F3 to a vertically-sliding bar, F4, working up and down'on the bracket F5. The pivot-pin, at F3, is fixed in bar F4, and

projecting from the front side of the bar near f ssns 3 by acurved bar, F8provided with a stud, F9, projecting'through the bottom F10 of the case. The arms F2 are provided, a short distance above the bar F2, with stud-pins H, permanently attached and projecting from each side. On the rear side these pins have heads standing about the distance ot' the thickness of the arm Ffrom the arms F2. On the front side of these arms is a spring, H', xed to the pivot of the arm F on shaft D' and projecting each way from the shaft a little farther than the arm F. Each end is bent into the V form (shown at H2) and presse-s upon the front projection of one of the stud-pins H.

The inverted-V-shaped frame F2 may be moved on its axis F3 so as to bring either of the pills H into its respective notch on the end of the arm F, where it is held by the bent V- shaped end of the spring H, which springs over the pin, the other spring at the same time escaping from its notch and from its spring when that side is so engaged with the arm F,

which,as shown in the drawing Fig. 3, in the right side, will, on being raised by the cam F" and slide F4, raise that end of the curved arm F, oscillating it on the axis D', throwing the feed-shoe to the left. rlhe said shoe is also raised immediately before to bring it iuto contact with the cloth by its cam E1 and slide E'.-

If it is required to feed in the opposite direction, the inverted-V-shaped frame F2 is moved to the right to disengage the pin at the right with the arms F2 and engage the other pin at the: other end. Then when the said 'frame is raised the shoe will be moved to feed to the right.

The amount of the movement of the feedshoe is governed by the bent arm H3 H4 and an adjusting-screw, H1, through the table, hearing with the lower end on the end H4 of the arm, and at a distance from the end the arm is pivoted to the under side of the table and curved, so that the part Hmay be brought under the stud-pin Fs ofthe bar F4 and arrest its downward movement, thereby keeping the shoe on F4 a greater or lesser distance from the camhFY, which correspondingly limits the oscillation of the bar F or its extent of feeding movement. The screw H", for adjusting the arm, is operated by means of a screw-driver through a hole in the slide D12.

The cloth-presser I slides in a vertical slot in the head of the needle-arm support, and is provided with a rod, l', which passes through a hole above the same to the top, where a square socket, 12, is formed.

I3 is a finger-piece, square at the bottom, attached to said rod, and which fits with its square in said socket, and is capable of turning when raised out of the socket. When so turned one-eighth of a revolution it will rest with its corners on the wall tops, and in this way the presser is out of action a-gainst the action of the spiral-spring 14, and by one-eighth of a revolution one way again the presser will come downagain into contact with the table.

K is a tension-spring provided with the ver- I tically-projccting ends, having points K', for

taking into the hole in the bobbinat each end, and havin ga righ tand-left threaded screw, K2, for moving said points to or from each other. The lower part ot' the spring is connected to a support, K2screwed to the needle-arm sup#- port, and the screw K2 is provided with a disk, K4, working in a grooved friction-block, K5,

which is the upper end of said spring-support,

to prevent it from being turned by working the machine, and the nuts of said screw are movable.

L represents a spooling device, consisting of a stock projecting through the table, supported by a cylindrical spring, and supportinga grooved pulley, L', at the bottom and another, L2, at the top. rlhe upper pulley has a spindle, to which the spool L3may be connected'by one-end, so as to be turned by it, the other end being supported in an arm, L4, of the stock.' A cord is fixed on the grooved pulleys, and the lower one is allowed to rest on the friction-wheel B2, which may be worked in the direction to slip the clutch B11 for spooling.

When the spooling device is not required for use it may he raised a little and removed from contact with the wheel B7, or it may be removed from the table.

Having thus described my invention, what I claim. as new, and desire to secure by Letters Patent, is-

1. The combination of the treadle A and clamp A2 with the machineframe, whereby the treadle may be adjusted to either side or end of the frame, according to the direction of the feeding movement, all substantially as specified.

2. The arrangementof the drivin g-wheel A11, hinged supporting-frame B, eccentric plate B2, adjustable hanger B5, and spring B4, substantially as specified.

3. The combination and arrangement of the vertically adjustable driving friction wheel A11, loose friction-wheel B", ratchet-clutch B11,

spring B12, fly-Wheel B13, and friction-lever B14,

all substantiallyas specified.

4. The combination,with the stand and tableplate, of the jointed brace B1H and sleeve B19, when constructed and arranged as specified.

55.`The crank-shaft B8, adjustable connecting-rod C', oscillating plate G3, rod C, connected by ball-joints with oscillating plate, and needle-arm C5, all constructed as described, and arranged as specified.

6. The combination, with the curved pivoted shuttle-carrying arm, having spring-forks to retain the shuttle, ot' the crank-shaft B2, when the shaft and shuttle'carrier are connected by the adjustable connectingfrod D3, constructed, as described, to compensate for the wear of parts, substantially as specified.

7. The combination, with the shuttle, of the tensionspring D2, set-screw D1, and guards D11, when arranged, substantially as specified, to prevent the thread from catching on the adjusting-screw.

8. The combination of the feed-shoe E, vertically-sliding plate E', adjusting-spring E5; seb-screw-Ea, carrier E2, and cam E7, all substantially as specified. I

9. The com bnaizion, with the feed-carrier E2 and notched bar F, of the inverted-V-shaped frame F2, stud-pins H, spring H', bar F8, with stud F9, vertical slide F4, and cam F, all substantially as specied.

l0. The combination, with the vertical slide F4 and stud-pin F6, of the bent arm H3 H4 and I adjstng-screw H7, substantially as specified.

11. Thecombnation, with tension-spring K, connected to the needle-afin support, as described, of the right-aud-left theaded screw K2, with movable nuts, and the disk K4 and friction-block K5, all substantially as specified. 12. The spoolng device L, consisting ofthe vertical stock-arm L4, grooved pulleys L ald L2, and arranged relatively to the table, and friction-wheel B7, all substantially as specified. vThe above specification of my invention signed by mc this 4th day of December, 1869.

P. J. CLEVER.

Witnesses: A

E. J. 'KEPERsTEIN, RICHARD Bossa,

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