US439234A - Sewing-machine - Google Patents

Description

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J. BOPPEL.

` SEWING MACHINE. No. 439,234..l Patented 00h28, 1890.

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J. BOPPEL.

. SEWING MACHINE.

No. 439,234. Patented Oct. 28, 1890.

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JACOB BOPPEL, OF NEVARK, NEV JERSEY.

SEWING-MACHINE.

SPECIFICATION forming part of Letters Patent No. 439,234, dated October 28, 1890.

, Application tiled January 5, 1889. Serial No. 295,537. (No model.)

T0 all whom it may concern:

Be it known that I, lJACOB BOPPEL, a citi zen of the United States, residing at Newark, in the county of Essex and State of New Jersey, have invented certain new and useful Improvements in Sewing-Machines; and I do hereby declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same, reference being had to the accompanying drawings, and to letters and numerals of reference marked thereon, which form a part of this specification. y

This invention relates to certain improvements in that class of sewing-machines in which the ordinary wooden spool may be employed in lieu of a specially-prepared bobbin, the general objects of the invention being to reduce the cost of construction, to enable the machine to work smoothly, noiselessly, and effectively at a high rate of speed, and to enable the parts to be manipulated with increased convenience.

The invention consists in the improved sewing-machine and in the arrangements and combinations of parts, substantially as will be hereinafter set forth, and finally embodied in the clauses of the claim.

Referring to the accompanying drawings, embraced in three sheets, in which like let- Aters and numerals indicate corresponding parts in each of the several figures, Figure 1 is a side elevation of the improved machine, the bed-plate being shown without a certain depending rib or iiange to enable the working parts to he more clearly seen. Fig. 2 is a bottom plan of the same. Figs. 3, 4, 5, and (i illustrate in detail certa-in cams or eccentrics connected with the main shaft of the machine and operating the feed mechanisms, the spool-reciprocating device and looper, Fig. 3, showing the relative positions of the cams to one another. Fig. 7 is a plan showing the looper in detail; and Figs. 8, 9, and 10 illustrate the spool and its tension device. Fig. 11 is a section taken on line 9;, Fig. 1. Figs. 12 and 13 are detail views of a take-up lever which may be employed. Figl 14 is a detail View of a lever and (3o-operating parts for forcing the needle-thread from the looping-ring after the spool is passed through, and Fig. 15 is a bottom plan of said parts in detail.

ln said drawings, a indicates the bed-plate of the sewing-machine, having the usual hollow arm h, with the main shaft c extending 4through the upper part thereof, and having the ordinary belt-wheel d and hand or fly wheel e thereon. The main shaft operates a reciprocating needle-bar f and needle g, in any usual manner.

Upon the shaft c is arranged a series of cams or eccentrics h i j, adapted to give reciprocating or oscillating motion to the connecting rods or bars kl in respectively extending downward through the vertical part b of the hollow arm h, to the mechanism for looping the thread, reciprocating the spool, and feeding the goods forward. The said connecting rods or bars are fulcrumed on suitable bearings h3 within the arm h in any manner desired, as indicated in Fig. 1. The rod lo engages the forked end n of a lever n, which is fulcrumed at o to the bed-plate a., and connects with a reciprocating bar p,

which latter is arranged to lie parallel with Y the main shaft c or longitudinally beneath the bed-plate, the end thereof opposite the lever n preferably sliding in a bearing q, secured to or formed beneath said bed-plate.

To regulate the movement of the bar 19, and thus increase or diminish the pivotal vibration or reciprocation of the looper, and enlarge or make smaller the size of the loop, I have made the lever n in parts, oneadjustable in relation to the other; the part fr?. being extensible, so that the arm of the lever to which the bar p is connected may belengthened. Said part n2 may be slotted, as at n3, and secured to the body of the lever by setscrews n4, or said arm of the lever maybe eX- tended in anyother suitable manner. The reci procatin g bar p engages a cogged or toothed sleeve or wheel u ou a stationary spool pin or spindle r, secured to the bed-plate a', and causes the said sleeve or wheel to make a partial revolution-say seven-eighths of a complete revolution-to then stand for a moment while the spool passes through the loop in the thread, and then make a return movement, substantially as will be hereinafter described.

Any suitable mechanical means maybe employed for transmitting movement from the reciprocating bar 19 to the sleeve u and the looping mechanisms connected therewith; but by preference l provide the Said recip- IOO rocating bar with a rack consisting of a longitudinal series of teeth s, which may be formed on said bar in the manner shown in Fig. 1. \Vhen said rack is employed, I provide the said sleeve with cogs or teeth t, which mesh with the teeth of the bar p, so that when the bar is forced backward and forward the cog-wheel or sleeve will be oscillated, together with the looping mechanisms fixed thereto. By this method l secure amore positive movement at a limited expense of construction than by any of the other methods or plans of construction of which I am at present aware.

To the sleeve u is secured a looper fr.

' (Shown in detail in Fig. 7.-) Said looperconsists of a disk or end plate r', a looping-ring @2, through which the spool passes, and a connecting rod or bar v3, the three parts being rigidly connected and adapted to oscillate together under the inuence of the `sleeve u, with which the looper is connected. The said looping-rin g o2 is formed of flat metal and presents a broad peripheral face for the thread to rest on in forming the loop, and is provided with a projecting teat or hook w to catch the loop of needle thread after the needle forces it through the fabric being sewed and cause said thread to pass onto the said peripheral face of said ring and form a large loop for the spool. The spool-pin o' extends through the disk or end plate v to a point at or near the diametric center of the looping-ring, leaving a space between the parts r and 2. After forming the loop and then the stitch the spool is forced back from the spool pin or spindle under the inliuence of a reciprocator w onto a spool-carrier 2. I prefer to have the spoolcarrier 2 formed of a rod which is twice bent, as at 3 3, and is so pivotally arranged on the bed-plate or other suitable bearings as that the spool-carrying end tends to throw the spool upward toward or through a passage or opening in the bed-plate, so as to enable the operator to readily or convenientlyT grasp the spool and withdraw the same from the holder or I5 arrange the spool on said holder. The

4Vsaid spool-holding portion of the carrier 2 moves upward automatically under the power of a spring et when the slide 5 of the bedplate is withdrawn.

To hold the spool-holding portion of the carrier down from the slide 5 to a position in line with or in proper co-operative relation to the pin or spindle r, I have provided the said carrier with a pin or stud 6. (Shown in dotted line in Fig. 2.) This extends from the carrier at right angles or in such a manner as to eugage the slide when the latter is closed and thus secure the desired result. The said stud lies back of the spool-holding portion of the carrier, so as not to interfere with the movements of the spool.

The spool-reciprocator consists of a lever 7, which is fulcrumed at 8 and receives its inotion from the rod fm, the said rod having a ball-bearing on said lever, as will be understood.

On the opposite end of said lever the same is provided with a fork or arms 9 9 to engage the opposite ends of the spool, the inner faces or edges of said arms being rounded, as at l0. The forked or armed piece may be, and preferably is, of a separate or independent piece from the body of the lever to allow of regulation or adjustment. The vibrations of the reciprocator force the spool back and forth through the looping-ring from the pin or spindle r to the spool-carrier 2, the central opening in said ringbeinglarge enough to allow of a free passage of the spool therethrough. After the loop has been formed by the hooked teat catching the needle-thread and drawing the same onto the periphery of the ring, and the passage of the spool through said loop, I force the thread from the periphery of said ring, so that it may be drawn up by the takeup 1l, and to this end I have provided means for thus forcing the threads from the said periphery, so that the same is free to be drawn by said take-up, s uch as is shown at l1.

The preferred constructon by which I am venabled to secure the desired result is shown in Figs. 1, 2, 11, and 1l, where 12 illustrates a small lever fulcrumed on the bed-plate adjacent to the looping-ring, one end of which lever is adapted to be acted on after the spool has passed through the loop by the reciprocator, and the other end of said lever acts to disengage the needle-thread from the looper by forcing the said thread from the broad face of the looping-ring.

In operating the lever 12, I prefer to employ a pin 13, which extends up from the reciprocator and engages the end of the lever 12, so that its opposite en'd willforce the needle-thread from the looping-ring and form a slack in the thread, upon which the take-up may act to form the stitch. The looped thread after having been forced from the face of the looping-ring, as described, passes under the inliuence of the take-up arm between the ends of the pins or spindlesr and carrie 2 and the ends of the spool and arm 9 to form the lockstitch. A return movement is given to the lever by means of a spring 14, Fig. 2.

The feed-mechanism for forcing the fabric forward while being sewed receives its power from the connecting-rod Z, the toothed feed 15 being secured to avertically and horizontally moving bar 16, sliding in bearings 17 17 on the bed-plate. The said bar 16 receives its motion from a lever 18, having a universal movement on suitable bearings 19. Said lever is connected to the rod Z, whereby it is given the desired movement.

In operating the machine to form the desired stitch the needle is brought down through the fabric by any desired mechanistns connected with the driving or main shaft, so that the thread is brought into the path of the hook or teat w', the thread passinginto the notch 102, Fig. 7.

The mechanisms for operating the looper and co-operating parts are so timed as that the said looper is then given a partial revo- ICC lution and the thread of the needle is forced onto the fiat face of the ring t2 and given the form of a loop of a size large enough to allow the passage therethrough of an ordinary spool from the spool-holding portion of the carrier 2 to the spindle r under the influence of the spool-reciprocator w. After the spool and the thread carried thereby has passed through the loop the pin 13 engages the lever 12 and the latter forces the looped needle-thread from the face of the ring v2, when thetake-up arm acts to draw the needle-thread and take up the slack and entirely free the looped thread from the face of the looping-ring, thus completing the stitch.

To prevent the spool from revolving` too freely on the spindle, I have provided a tension device, which is shown in Figs. S, 9, and 10. This consists of two disks 2O 20, of sheet metal, connected by a cross-bar 2l. The disks are centrally perforated, as at 24, to receive the spindle and holder r and 2, respectively, and around the central perforations are formed bearings 22 22, which press against the ends of the'spool and extend a little into the central passage 23 in said spool, the ends of said spool being countersunk, as indicated at 24. The spring action of the disks on the bar 21 allows the spool to be inserted therebetween. The bar 21 is perforated, as at 25, Fig. 10, to allow the thread to pass therethrough to where it is held by the last stitch `made on the fabric or garment.

Having thus described theinvention, what I claim as new is- 1. In a sewing-machine, the combination of the bed-plate, reciprocating needle, oscillating looper having a hook or teat w to catch the needle-thread and force it onto said looper, a spool-reciprocator having a pin 13, a lever adapted to be engaged by said pin and arranged on said bed-plate adjacent to the needle-thread to force the latter from the looping-ring, a spring 14, and means for operating the said working parts, substantially as and for the purposes set forth.

2. In a sewing-machine, the combination of the bed-plate, a reciprocating needle and means for operating the same, an oscillating looping-ring having a teat or hook to catch the needle-thread and force the same onto the peripheral face of said ring, means for operating said ring, a fixed spool-spindle r, and a carrier 2 in line with but separate from said spindle, a lever 7, provided with forks or arms to engage the opposite ends of the spool, means for operating said lever, a lever 12, engaged by said lever 7 and to be operated to force the needle-thread from the looping-ring, and a spring connected with the bed-plate and said lever 12, substantially as and for the purposes set forth.

3. In a sewing-machine, the combination of the bed-plate and arm b, a shaft c, cams h ij, arranged on said shaft, connecting-levers m l k, a lever 18 and feed mechanism operated thereby, a forked spool-reciprocating lever 7, operated by the lever fm, a lever n, operated by the lever it, reciprocating bar p, sliding in a bearing q of the bed-plate and engaging a sleeve or wheel u and oscillating the same on a fixed spindle, said spindle extending from said sleeve to receive the spool, a looper secured to said sleeve or wheel, and a spool-carrier 2, all said parts being arranged and adapted to operate substantially as and for the purposes set forth.

4.'In a sewing-machine, the combination, with a bed-plate having a passage therein for the spool and a needle, of a spool-spindle upon which the spool may revolve, a carrier bent as at 3 3 and providedl with a spring 4 and held by suitable means in alignment with said spindle to receive the spool from said spindle in its reciprocating movements, a looper arranged to move on said spindle, and a spool.

reciprocator, all said parts being arranged and adapted to operate substantially as and for the purposes set forth.

5. The combination, in a sewing-machine, with a suitable needle operated in connection with a main shaft, a connecting-rod k, a lever n, of adj nstable parts whereby the movement of said lever can be varied, reciprocating bar p, fixed spindle r, a sleeve u, looper fastened to said sleeve, means for converting the reciprocating motion of the bar p into oscillating motion of the said sleeve, and a spoolreciprocator, substantially as set forth.

6. In a sewing-machine, the combination of a spool-spindle and a reciprocator arranged beneath the bed-plate of said machine, a spoolcarrier held by suitable means in alignment with the spindle r and bent, as at 3 3, and a spring, said parts being arranged and adapted to operate substantially as and for the purposes set forth.

7. In a sewing-machine, the combination, with the bed-plate a, having a slide 5, of a spool-carrier arranged beneath the bed-plate, bent as at 3 3, and provided with a pin or stud 6 for holding said carrier in position 'to`reeivel the spool, and a spring for throwing a portion of the carrier into posit-ion to allow of the rel" moval from or the arranging of the spool on said carrier, substantially as and for the purposes set forth.

8.' In a sewing-machine, the combination, with the bed-plate and a fixed spool-spindle r, an oscillating looper, and a spool-recipro- Gator, of a spool-carrier 2,pivoted on suitable bearings of said bed-plate,bent as at 3 3,and having a portion thereof held in alignment with the said fixed spool-spindle, and means for holding said portion of said pivoted carrier in alignment, substantially as and for the purposes set forth.

In testimony that I claim the foregoing I have hereunto set my hand this 31st day of December, 1838.

JACOB BOPPEL.` lVtnesses:

CHARLES H. PELL, CONSTANCE H. BALDWIN.

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