US1471689A

US1471689A - Hand embroidering machine

Info

Publication number: US1471689A
Application number: US457470A
Authority: US
Inventors: Fischli Fritz
Original assignee: Individual
Current assignee: Individual
Priority date: 1921-03-31
Filing date: 1921-03-31
Publication date: 1923-10-23
Anticipated expiration: 1940-10-23

Description

Oct. 23, 1923.

. 1,471,689 F. FISCHLI HAND EMBROIDERING MACHINE Filed March :51. 1921 2 sheets-sheet 2 1. 1 126 old/L Patented Get. 23, 1923.

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FRITZ rIseHLI, or NAFELS;-SWITZERLAND.

HAND. EMB-ROIDERING;MAGH-IN E.

V ApplicationfilcdMarch'31, 1921.. SeriaLNo..45 7,47O. v

(GRANTED UNDER THE raovrsrons on'rnnecrornRcHe,1921, 4i srufn, 1313.1]

T0 all whom it may concern:

Be it known that I, FRITZ FIscHLI, a citizen of the Republic ofSwitzerlan'd, re siding at Nafels, Switzerland, have invented certain new andusefulImprovements in Hand Embroidering Machines (for-which I have filed applications in the following countries: In Switzerland, April 3,1915, Patent No. 70128; in- Germany, March 2, 1918, Patent No.,308,930; in France, March 11, 1918, Patent No. 489,257; in Switzerland, November23, 1918, Patent No. 81716; in Italy, July 8, 1919, Application No. 281/1770; in England, January 10,1921, Patent No. 157410; in England, January 10, 1921; Patent No. 157411) and I do hereby declare the following to be a clear, full, and exact description of the inventi0n,,such as will enable'others skilled-in-tlie art to which it appertains to make anduse the same, reference being had to the accompanying drawing, and to letters or figures of refer ence marked thereon, which forma part of this specification.

In order to increase the output of hand embroidering machines it is necessary to shorten the stroke for a certaindraw of the thread;

The object of'the present invention is to provide a device of simple construction, which in connection with hand embroiderlng machines shortensthe'stroke of the carriage and considerably-increases the output.

For this purpose, the device according to the present-invention comprises arms rigidly connected to the shafts carrying the thread drawers or take ups, which are mounted in the usual manner in the carriage of the hand embroidering machine, said varms being flexibly connected to bars, pivoted at one end and causing a toggle like motion to take place between them and the said'arms dur,- ing the outward stroke of the carriage, so that the threaddrawers are impelled downwards in such a manner as to cause the threads to fold into a loop,

Weights may preferably be attached to the shafts carrying the thread drawers, caus ing a toggle like motion between the-hare and the arms, upon the return of the.car-' riage, so that the thread-drawers receive an upwardly directed impulsion, causing the thread to be released. o

It is further possible,in-case the device according to the present invention is in? tended to be used? in connection with embroidering machines the-carriagesroffwhich I comprise thread drawers supported '7 by two superposedshafts, to dispose the arms onthe 7 upper, andthe weights on the lowershaft, the two shafts being desirably connectedkby gearing.

In order to make clear the abOVeinVentiOn it will now be more particularly'described with reference to the accompanying drawing which illustrates two constructional ex amples of the same. i i

In this drawing v ig. 1 is aside view of a hand em'broidering machine fitted; with the device according to thepresent invention only the parts of the machine necessary for the. compre hension ofthe invention being'shown. i I Fig. 211's apart "lan View of Fig;-1.

Fig. .3 is a deta' of the new device.

Fig/leis a, sideview otja similar hand emroidering machine fittedwith a device acv cording to therpresent invention, wherein.

thebars pivoted at one end, may be disconnected'i rom the arms a I 1 Fig. ,5 is a frontview of the machine ac: cording to Fig, 4:; The hand embroidering machine partly shown in Figs. 1 and 2 is an embro'idering machine ofthe doublerowed type, with carriages 1, movabletoand fro along the rails 2.. The twoendsoit' each carria-ge lare connected together by ajslmitB extending over the whole length ofthe-machine and carrying the needleholders 1 in the wellknown manner, on upper and vlower slides held by supports 3?, At QLChQ6I1Cl Of the machine, a bar 5, rotatable around. point 21 isffixed to the frame 6 and cooperatesby means of one of its notches 7, with a pro, truding pin vf an arm,8, which latter; is adjustab e lengthwise in a carrier socket 10. A thread drawer 11 extends over the whole length of the machine, andis bent over :at its ends which are adjustably fixed inithe sockets'lO. The two sockets 10 are rigidly mounted on the endsofa shaft 13 mounted in supports, 3* of the ,carriage;

The sockets 1001 the lower rowhold only the endsof the lower thread drawer 11, and

no arm 8. [Screws 12.1and "1 11 serve respectivelyto fix the arms 8 and the thread drawer, 11in the sockets 10, which latter are in turn held in place on shafts 1'3 means .the lower shaft 13 of each carriage 1. Sup ports (Fig.

' serve to prevent '3), mounted on :shafts 13, a deformation of the thread drawers 11 due to the tension of the thread.

As far asdescribed the machine, works as follows: Let it be supposed that the carriage 1, shown in Fig. 1 in its inner position, is to be moved outwardly. The bars 5 on each side of the machine are swung outwardly by means of the arms 8, which latter, together with the bars 5 execute a toggle like motion.

All movements of the upper shaft 13 are transmitted to the lower shaft 13 of the lower row by means of thetoothed wheels 16 and band 17 causing thereby the thread drawers 11 to be impelled downwards, and the folding into a loop of the threaddrawn out of the fabric 24 by means of the needle holders 4. r a

After the carriage has attained its outer position and the threads have been completely drawn out downwardly by means'of the thread drawers 11 (right side of Fig. 1), it returns tojits inner position.- The balance weight 19 tends to maintain the arms 8 in their operative position with regard to bars 5 so that said parts execute an inwardly directed toggle like motion, whereby the thread drawers 11 are impelled upwards, relea'singthe threads in the necessary manner. When the carriage l has reached the end of its return stroke, the parts once more assume the position shown on the left half of Fig. 1, whereupon, after the needles have ierced the fabric 24, the threads are'withdrawn through the corresponding parts or to those of the left hand carriage.

the right hand carriage which are opposite The stroke of the carriage can be-adjusted by placing the pins 9 in one or the other of the notches 7 of bars 5.

It will be appreciated that the stroke of the carriage is considerably shorter than usual because of the pulling down of the threads by means of the thread drawers;

In Fig. 3 the arms 8 and the thread drawers 11 are shown connected at each end to separate

sockets

22, 23,

The hand embroidering machine shown in Figs. 4 and 5 is a double rowed machine with carriages 1, movable to and fro along rails 2, the ends'of each'carriage being connected together by means of shafts 3 ex tending over the whole length of the ma chine. Shafts 3 carryneedle-holders 4 on slides held by supports 3*. Bars 5 are linked at one end 21 to frame 6 of the embroidering machine, they presenting notches 7 of which one cooperates with a pin 9 of an arm 8 so as to form an articulated connection beconnected to the ends of a shaft 13 mounted in the above mentioned sup-ports 3.

The swinging motion required to draw out the thread is imparted'to the thread drawers 11 by means of bars 5 and arms 8 from the reciprocating motion of the carriage 1. It may be desirable that the bars 5 and arms 8 be capable of being disconnected or that it become necessary, in order to modify the stroke of the thread drawer 11, to engage the pins 9 of arms8 with other notches '7 of the bars 5. In order to render such a movement of bars 5 possible, there are provided two shafts 25 extending over the whole of the upper part of the machine, rotatably' mounted and longitudinally displaceable. A lever 26 with a bent over end 27 is fixed near each end of the shafts 25. Levers 26 of each shaft 25 ensure of a movement of bars 5 respectively at either side of the frame 6. Each shaft 25 is fitted with a handle 28 and has attached thereto a bat. ance weight 29, tending to move levers 26 in the direction of the arrow A, the handles 28 serving to adjust shafts 25 in order that levers 26 should occupy the positions indicated by full lines in Fig. 5 and on the left side of Fig. 4, that is to say completely on of range of bars 5.

Is it desired to disconnect bars 5 from arms 8, shafts 25 are turned by means of handles 28 so that levers 26 pass from position indicated by dotted lines on the rigut side of Fig. 4- into that shown in full lines, whereupon shaft 25 is longitudinally displaced in sucha manner that the bent over ends 27 of levers 26 are brought into the position indicated by dotted lines in Fig. 5, so that they lie against arms 5 from the underneath side.

Upon releasing handle 28' of a shaft 25 when the levers 26 are in this position, the balance weight 29 produces a turning movement of said shaft 25 in such a manner that the two levers 26 fixed thereto be moved in the direction of arrow A, whereupon the bars 5 swing around their pivoted ends 21, till they come to occupy the position indicated by dotted lines on the 5 may again be connected to arms 8 by means of a pin 9 when carriage l is in a suitable position. By suitably adjusting carriages 1 and lowering of levers 26 it is possible to determine the-cooperation of one certain notch 7 of bars 5 with one certain pin 9 of arms 8. I

In case a bar 5 pivoted to frame 6 be also provided in connection with each arm 8 of the lower row, it will be possible to con nect those bars 5 of different rows which are situated one above the other, by means of a chain or band, so that each movement imparted to bars 5 of the upper row by means of levers 26 be transmitted to bars 5 of the lower row.

It is to be understood that the invention is by no means limited to the embodiments here illustrated and described by way of example.

I claim:

1. In a hand embroidering machine, a device for shortening the stroke of the carriage when drawing out the thread comprising in combination a frame, a carriage thereon, shafts mounted in the carriage, thread drawers carried by the shafts, bars having their inner ends pivotally connected to the frame, arms rigidly connected to the shafts and flexibly connected to the outer ends of the bars whereby a toggle like motion is produced between the bars and arms during the outward stroke of the carriage so that the thread drawers are impelled downwardly to cause the threads to fold into a loop.

2. In a hand embroidering machine, a device for shortening the stroke of the carriage when drawing out the thread comprising, in combination a frame, a carriage thereon, shafts mounted in the carriage, thread drawers carried by said shafts, balance weight fixed to'said shafts, bars pivotally connected to the frame, arms rigidly connected to the shafts and flexibly connected to the bars whereby a toggle like motion occurs between the bars and arms during the outward stroke of the carriage so loop, said weight effecting an inwardly directed toggle like. motion between the bars and the arms during the inward stroke of the carriage whereby the thread drawers are riage when drawing out the thread compris ing in combination, a frame, a carriage operable on the frame, shafts journalled in the carriage, thread drawers carried by the shafts, bars pivotallyconnected to the frame,

arms connected to the shafts and flexibly connected to the bars for producing a toggle like motion between the bars and arms during the outward stroke of the carriage, to impel the thread drawers downwardly so as to fold the threads into a loop, members pivotally mounted on the frame for disconnecting the bars from the arms on which they cooperate and balance'weight for automatically moving said bars out of range of the arms when the shafts are released after said members have been brought into the range of the bars. 7

4. In a hand embroidering machine, a device for shortening the stroke of the carriage when drawing out the thread, comprisin in combination a frame, a carriage slidab e thereon, shafts journalled in the carriage, thread drawers carried by the shafts, arms connected to the shafts, bars operably connected to the frame and to the arms for producing a toggle like motion between the bars and arms during the outward stroke of the carriage so that the thread drawers are impelled downwardly to cause the threads to fold into a loop, members in the form of levers bent over at their free ends swingably mounted on the frame with which they cooperate, and balance weight automatically moving said bars out of range of the arms when the shafts are released and after said members have been brought into the range vof the bars.

In testimony that I claim the foregoing as my invention, I have signed my name.

that the thread drawers are impelled downwardly to cause the threads to fold into a FRITZ FISGHLI.

for disconnectiong the bars from the arms