US608781A

US608781A - Embroidering-machine

Info

Publication number: US608781A
Authority: US
Publication date: 1898-08-09
Anticipated expiration: 1915-08-09

Description

' Patented Aug. 9, 1898. v R. LOEB. EMBROIDEBING MACHINE.

(Applic ation filed Aug. 26, 1897.)

2 Sheds-Sheet I..

(No Model.)

WI FTEE 07/ 05264 firm a Ayn/M W/f Patented Aug. 9, I898.

R. LOEB.

EMBROIDERING MACHINE.

(Application filed Aug 26, 1897.)

2 SheefsSheet 2 (No Model.)

INVENTUH I was 00.. moTo-u'ma. WAsnlNGTO\ D c FFlQEi.

RUDOLF LOEB, OF CAMDEN, NEXV JERSEY.

EMBROlDERlNG-MACHINE.

SPECIFICATION forming part of Letters .Patent N 0. 608,781, dated August 9, 1898.

Application filed August 26, 1897. Serial No. 649,583. (No model.)

To all whom it may concern:

Be it known that I, RUDOLF LOEB, a citizen of Germany, residing at Camden, in the county of Camden and State of New Jersey, have invented a new and useful Improvement in Embroidering-Machines, of which the following is a specification.

My invention consists in holding and securing the thread of an embroidering-machine from running back into its thread-shaft beyond the reach of the embroidering-needle when the machine is stopped and the thread broken for changing the embroidering to another part of the embroidering-cloth. After the machine is stopped a thread fastener holds immovably the embroidering-thread in front of the thread-cylinder and the needle is rotated independently by the machine operator until the embroidering-thread is broken and the embroidering-cloth moved for em-- broidering at another part of it. The reciprocating or embroiderin g motion of the embroidering needle or needles (but one being shown in the drawings) is as usual in this class of machines, and the additional rotary motion of said needles for breaking the thread is accomplished, preferably, by a longitudinal shaft having a screw formed thereon, in connection with a needle screw-shaft meshing with it. The operator by turning a handle of the longitudinal shaft imparts a rapid rotation to the needle-shaft and needle, and thus breaks off the thread held by the thread-holder. I do not confine myself to the exact mechanism for accomplishing the object described, for I have hereinafter shown and described that it can be done in more than one way.

On reference to the accompanying sheets of drawings, making part of this specification, Figure 1 is a front elevation of an embroidering-machine embodying my invention, the bed-plate being in dotted lines. Fig. 2 is a plan view of Fig. 1, showing mechanism for rotating the needle and twisting and severing the embroidering-thread, 'the driving-shaft being omitted. Fig. 3 is the same view as Fig. 1,with the exception that the reciprocating bar is depressed by its cam and moved longitudinally to depress and place the thread hook or holder on the opposite side of the thread-cylinder. Fig. 4 is a detached side elevation of the reciprocating bar, guides, thread hook or holder, and lifting-spring for said reciprocating bar. Fig. 5 is a side elevation of the reciprocating-bar guide, reciprocating bar, and an end view of the depressing-cam. Fig. 6 is an enlarged detached side elevation of the reciprocatin g or thread-holder bar. Fig. 7 is a top edge View of Fig. 6, showing the cam-notches. Fig. 8 is a longitudinal surface View of the transverse thread-shaft which is located in the transverse thread-cylinder and engages with and receives its motion from the screw of the actuating-shaft. Fig. 9 is a View like Fig. l, with the exception that the thread hook or holder has no vertical movement and it is located in a slot behind the stitch-plate. Fig. 10 is a transverse section of Fig. 9, including the stitch-plate. Fig. 11 is a transverse section of Fig. 9 through the fabric, stitch-plate, and reciprocating bar, showing the thread hook or holder, needle, thread-cylinder, and thread. Fig. 12 is a plan view of Fig. 9; and Fig. 13 is an enlarged section of the fabric and thread, the latter being formed into a chain-stitch for embroidering on the cloth.

Similar letters refer to similar parts in the several views.

A, dottedlines, Figs. 1, 2, and 3, is the bedplate of an embroidering-machine. B is a pedestal of said bed-plate, on which is mounted a longitudinal guide-cylinder 0, having beneath it a communicating transverse attachment or thread-cylinder D. E is a driving-shaft which passes through and is guided by the pedestals B and guide-cylinders C, but one of each being shown, and is provided with a screw a, in engagement with a screw Z) of a transverse thread-shaft F of the cylinder D, which, as shown in dotted lines, Figs. 1 and 8, has an axial or needle opening 0, together with communicating inclined thread-opening d.

G is a longitudinal bar which reciprocates in guides H of the bed-plate A and has an irregular notch I impressed in its top edge, Figs. 1, 3, 6, and 7. J is a cam hung loosely on a pin ein a recess f of the guides H, whose edge is made to conform with and engage the notch I in such manner that the reciprocation of the bar G in the direction of the arrow 9 or It causes the simultaneous rotation of said cam J from the position shown in Fig. l to that shown in Fig. 3, whereby said bar G is depressed accordingly, there being a cam in each ora suitable number of guides H. Its depression is horizontal and even.

K, Figs. 1 and 2, is a stud fixed to and projecting from the side of the reciprocating bar G, which has an upwardly-extending arm L, provided with a hook M for catching and holding the embroidering-thread N in front of the thread-cylinder D on the stopping of the machine and after it has been severed from its needle 0. The cam J depresses the bar G when it is moved in the direction of the arrow 9 to pass the hook M beneath and beyond the embroidering-needle 0, Figs. 2 and 3, and its thread N from the cylinder or thread shaft F. A spring P extends from a fastening or block t', Figs. 2 and 4, on each guide H, containing a cam J. Its loose end j bears or lifts beneath the stud K of the hook M. On the return movement of the bar G in the direction of the arrow h the notched engagement of the cam J rotates it in the opposite direction and relieves said bar of its cam-depressing influence, which at the same time leaves the spring P free to act and grador in front of the thread-cylinder D when the machine is stopped.

thread N being passed into the rear end of the axial opening 0 of the thread screwshaft F is directed into the inclined opening d. On the needle 0 being inserted in the axial opening 0 and rotation imparted to the thread-shaft F from the shaft E the end or hook of the needle engages with the thread at or about the junction of the openings 0 d and thus is in condition for embroidering the cloth Q, Fig. 11, hung in a frame in front of the stitch-plate S or thread-cylinder D. On the completion of the embroidered figure at that part of the cloth the machine is stopped and the hook or device M is moved in front of the thread-cylinder D by its bar G, and it presses and holds said thread N in front of P, which must be long enough to compensatefor the travel or reciprocation of the rod G, is shown shortened by the removal of the caps R of the guides H, Figs. 1 and 3, they being used to guide the motions of the bar and cam and keep them from being displaced.

In Figs. 9, 10, 11, 12, and 13 the reciprocat= ing bar has no vertical or lifting motion and another way is shown of catching, holding, and breaking off the embroidering-thread and disposing of the short or broken-off end, which is worked into the embroidery so that after it is finished it doesnot show. This is the result of having the hook actuated in the back of the stitch-plate S, as both threads have to pass through the stitch-plate needlehole. Fig. 13 is a sectioned View of a chainstitch. As shown, Figs. 9, 10, 11, 12, and 13, other means can be employed for holding and breaking the thread as hereinbefore. Therefore I do not confine myself to the arrange- 1 ment and details illustrated and described The operation is as follows: Embroideringfor accomplishing the result desired.

I claim- In an embroideringqnachine, the combination of a thread-cylinder, a thread-holding device, and means for operating the latter whereby the thread is clamped between the thread-cylinder and the thread-holding device, an embroidering needle, and means whereby the needle may be given a rotary motion While the thread is clamped in order to break the same.

In testimony whereof I affix my signature in presence of two witnesses.

RUDOLF LOEB.

Witnesses:

FRANCIS D. PASTORIUS, B. D. ARCHER.