US758264A - Overseaming and welting sewing-machine. - Google Patents

Description

PATENTED Arm-2s, 1904.

v F. MALSOH. OVERSBAMING AND WBLTING SEWING MAGHINB.

APPLIOATION FILED MAY 28, 1901.

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F. MALSGE'.

.OVERSEAMING AND WELTING SEWING MACHINE.

APPLICATION FILED my 28, 1901.

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M azmew No. 758,264. PATENTED APR. 26, 1904. v

' IE. MALSGH.

OVERSBAMING AND WELTING SEWING MAGHINE.

APPLIOA'TION FILEDHAY 281 1901.

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r PATBNTED APR. 26, 1904. 1. MA sqH; 1 OVEYRSBAMING LAND 'WELTING SEWING MAOBINE.

APPLICATION IILBD MAY 28, 1901. v N0v MODEL. 4 SHEETS-SHEET 4.

I I I l *7 UNITED ST TES FRANK MALSCH, OF CAMDEN, NEW JERSEY, ASSIGNOR TO THE INDUSTRIAL Patented April 26, 1904.

PATENT OFFICE.

MANUFACTURING COMPANY, OF CAMDEN, NEW JERSEY, A QORPORA- TION OF NEW JERSEY.

OVERSEAMING 'AND WELTING SEWING-MACHINE.

SPECIFICATION forming part of Letters Patent No. 758,264, dated April 26, 1904.

Application filed May 28, 1901. I

To all whmn it may concern:

Be it known that I, FRANK Manson, a citizen of the United States of America, residing at Camden, in the county of Camden and State of New Jersey, have invented new and useful Improvements in Overseaming and Welting Sewing-Machines, of which the following is a specification. My invention relates to overseaming sew- I ing-machines especially adapted to hem or welt the edges of tubular knit goods, as sleeves of shirts, leggings, or hose, &c.; and it consists of stitch-forming and feeding devices especially adapted for this particular kind of work; and my invention further consists of the improvements hereinafter more fully described, and pointed out in the claims.

The invention will be more fully understood taken in connection with the accom- 2o panying drawings, forming part hereof, and? in which- -Figure 1 is a front elevation of a machine embodying my invention. Fig. 2 is a sectional plan view taken above the cloth-plate. 2 5 Fig. 3 is an end elevation of the machine, the horn or sleeve-support being removed. Fig. 4 is a section substantially on the line 4 4 of Fig. 1. Fig. 5 is a section on the line 5 5 of Fig. 1. Fig. 6 is a section on the line 6 6 of 0 Fig. 1. Fig. 7 is a top view of the machine. Fig. 8 is a plan view showing the presser foot, Welter, and mechanism on top of the cloth-plate. Fig. 9 is a front view of the Welter. Fig. 10 is a front view of the thread- 3 5 carrying looper and its mechanism, showing the same in adepressed position and ready to take loop from the stitching-needle. Fig.11 is a similar view. Fig. 12 is a view of a welted edge of a piece of fabric when being trimmed and sewed. Fig. 13 is a view of a piece of fabric, showing the finished hemmed edge. Fig. 14: is a perspective view of the stitchforming mechanism, showing the relative positions thereof when manipulating the two sewing-threads; and Fig. 15-is a similar view.

Referring now to the drawings fora further description of my invention, A is the base of the machine; A, the machine-arm; B,the main shaft; C, the cloth-plate with born or sleeve-.

Serial No. 62,237. (No model.)

support a, and E the needle-bar. This needle-bar E is arrangedin a slanting position, leaning with its upper end toward the rear in order to bring the needle 6 into operative position with a thread-carrying looper cl and a loop-spreader s, as will be more fully described. The needle-bar E is mounted in guides a on the machineearm A and receives oscillatory motion from a rock-shaft H, which is driven from the main shaft B by the eccentric Z2, eccentric-strap [6 and arm h of the rock-shaft H. The upper end of the eccentricstrap 6 is adjustably secured to the said arm in in order to vary the throw of the needlebar E, which is connected to the rock-shaft H by'means of the arm if and link 6'.

The thread-carrying looper 03 operates in a vertical plane parallel with the main shaft and in rear of thestitching-needle c. This looper consists of a Teshaped lever, whose upper end is adapted to carry a thread and engage a loop of the thread of the stitching-needle 6. At its stem 0? the looper d is pivoted to one end of a link (Z which latteris hinged with its other end a? to the base of the machine. The lower end (i of the looper d is pivoted to a vibrating double-armed. lever d, trunnionedto the machine-base at (Z and receiving its motion from the rock shaft H by means of the conmeeting-rod d and arm If. This arrangement of the thread-carrying looper 0? permits the same of having its upper end almost vertical and directly at the left side of the needle 6 when at its lower position, as shown in Fig. 10, and when moving upward it passes toward the right of the needle and keeps in proximity to the same, so that the stitch mechanism occupies but little room in order to place hose or sleeves of small diameter over the horn c to have their edges trimmed and welted.

The loop-spreader s is located entirely above the cloth-plate and moves in a horizontal plane to take a loop from the thread-carrying looper cl and present it to the stitching-needle e, as will be further described. This loop-spreader sis provided with a vertical shaft .9, journaled in a bearing of the machine-arm A, and on the upper end of this shaft is attached an arm 8 to actuate the said spreader 8. Motion is imparted to the shaft 3' from the main shaft B by an eccentric b eccentricstrap 6*, bellcrank lever 6 journaled at a to the machinearm A. The upper end of this lever b is connected.to the free end of the arm .9 of the loopspreader shaft .9 by the connecting-rod s and in each revolution of the main shaft B the spreader s is brought once into proximity to the stitching-needle e and back to its startingpoint.

The feed-bar f is slotted and straddles with its front end an eccentric f of the main shaft B to raise and lower the said feed-bar. The rear end of the feed-bar f is hinged to a vertical plate f journaled at f 3 to the machinebase A, and is provided with a slotted extension f, to which one end of a connection-rod f is adjustably secured. On the machine-base A is fulcrumed a swinging lever f which is pivotally secured at its upper end to the said connection-rod f and provided with asliding eccentric-box f mounted over an eccentric f on the main shaft B to actuate the said plate f and With it. the feed-bar f. By the means just described a very accurate and positive feed, driven at a high speed, is obtained.

- The pressure-foot 10 is secured to the lever 0, hinged at p to the cloth-plate C, and a handle 10 is pivotally connected to the arm to raise the said foot p against the action of the spring 19*. This presser-foot is also provided with a finger 10 over which the overseamstitches are formed and cast off, andwith a recess 10 for the upper movable and actuating trimmer-blade t. The trimmer shown in the accompanying drawings of this application is .made the subject of a divisional application for patent filed July 1, 1902, Serial No. 114,028, and does not form a part of this application; but for making the operation of this machine clear it is deemed advisable to give a description of such trimmer. This trimmer-blade is secured to a reciprocating block t moving in guides t of a block t, secured adjustably to the machine-arm A. The latter I is provided with a groove t into which a key of the block 25* fits, so that the same, with the trimmer-blade 6, may be moved closer to or farther away from the needle (2 in order to change the width of the seam or welt.

The reciprocating block 25 is actuated from the rock-shaft H by means of a gear-sector if on said shaft and meshes with a toothed lever h pivoted to the machine-arm A. v A link it connects the said lever with the said block t and operates the trimmer-blade tvertically. The blade t can also be adjusted vertically and is mounted in a V-shaped groove 25 of the block in which groove it is held by the screw t. The lower end of this blade t operates in a slot t provided in the upper end of a vertically-arranged arm t, pivoted at t to the machine-bed A. This arm Z is not fastened anywhere except at its pivotal connection,

which allows it to follow the upper operatingblade t when adjusted to any width of seam, and it may be remarked that one corner of the upper blade t is always in engagement with-the slotted arm 2 as shown in Fig. 3. To lead the trimmed-off material away, a chute 2f is provided and fastened to the cloth-plate C.

The Welter W may be of any suitable shape and construction, but preference is given to the one shown in Figs. 8 and 9 as being simple and efficient. The bracket w is adjustably secured to the cloth-plate C and is provided with a bent plate w, adapted to foldthe edge of the fabric into the shape shown in Fig. 12, the finger or projection w serving to accomplish this result.

The operation of my improved overseaming and welting machine is as follows: A sewingthread at is led through the guide a, tension device 12 guide a to the stitching-needle e, and another thread 9" is led through the guide 1*, tension device r eye 1' eye o on the thread-carrying looper d, and through the upper eye thereof. The edge of the fabric on is then bent as shown in Fig. 12- and inserted into the Welter w, Figs. 8 and 9. The machine is then started, and as the stitching-needle a, with its thread n, penetrates the fabric the thread-carrying looper (Z is in a position to the left of the needle and just back of the same, as shown in Fig. 10. The looper (i then engages the loop at the back of the needle and moves with the same upward and to the right of the needle, as shown in Fig. 14. In this position the needle ,6 has moved upward and the loop-spreader s has moved close to the thread-carrying looper d, from the rear of which it takes a loop of the thread r and presents the same to the stitching-needle a, as shown in Fig. 15, so that when the latter again descends it fastens the loop of the thread 1' to the top of the fabric, forming the stitch, as clearly shown in Figs. 12, 14, and 15. After the seam is finished the welt is turned over in the manner shown in Fig. 13.

It will be understood by those skilled in the art to which my invention appertains that log modifications may be made without departing from the spirit of the invention.

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

1. In an overseam sewing-machine, having a reciprocatingthread-carryingstitching-needle slanting with its upper end toward the rear of the machine its complemental actuating and feed mechanism and tongued presser-foot and throat-plate, thecombination with a threadcarrying looper formed integral with a T- shaped lever adapted to move said looper upward and longitudinally in a vertical plane intersecting' the line of travel of the slanting stitching-needle, of a loop-spreader and means for reciprocating the same in a horizontal plane above the cloth-plate, so that its free end passes in proximity and in front of the stitching-needle to engage the thread of the loops carried by the looper and convey the same over the top of the presser-foot, Where it will be secured by the needle, substantially as and for the purposes set forth.

2. In an overseam sewing-machine, in combination with a suitable feeding device, a reciprocating thread-carrying stitching-needle slanting With its upper end toward the rear of the machine, a throat-plate and a presserfoot, a tongue on each of said throat-plate and presser-foot, of a thread-carrying looper moving ina vertical plane, a vibrating arm, whose free end is pivoted to the lowerend of said looper, a link pivoted with one end to the machine-base and having its other end connected with an extension or lug ofthe said looper, and a loop-spreader operating in a horizontal plane above the cloth-plate, sub-- stantially as and for the purposes set forth.

3. In an overseam sewing-machine, in comverhaving'its free end pivoted to the lower end of said looper, a link pivotally connected at one end to the machine base and at its other to the said looper at a point above the conneotion with the said arm, a loop -spreader nesses.

FRANK MALSCH.

Witnesses:

HENRY H. MARTER, J r., CLARENCE L. DU Bow.

operating in a horizontal plane above the'cloth-

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