US1679428A

US1679428A - Circular looper

Info

Publication number: US1679428A
Application number: US30405A
Authority: US
Inventors: Kohler Max
Original assignee: Individual
Current assignee: Individual
Priority date: 1924-05-18
Filing date: 1925-05-15
Publication date: 1928-08-07
Anticipated expiration: 1945-08-07

Description

Aug. 7, 1928.

-F CIRCULAR noorn Filed m 15. 1925 3 slyeets-s'h eet l M ATTORNEY Aug. 7 1928.

. 1,679,428 7M. KOHLER CIRCULAR LOOPIJR I Filed May 15, 1925 3 Sheets-Sheet 2 ,ob ATTORNEY a Ly Aug. 7, 192a. 1,679,428

M. KOHLER CIRCULAR LOOPER File May 15, 1925 3 Sheets-Sheet 3 fig- ATTORNEY Patented Aug. 7, 1928.

UNITED STATES MAX KbHLER, F LIMBAGH, GERMANY.

CIRCULAR LOOFER.

Application filed. May 15, 1925, Serial No. 30.405. and in Germany May 18, 1924."

The present invention relates to an improvement in looping machines, more par- 7 ticularly to those of the type in which a ring of impaling pins is mounted on a rotatable dial, with means for looping or stitching together the edges of a fabric or fabrics suspendedon said pins. WVell known forms of looping machines include that illustrated in my previous Patent No. 1,026,808, dated May 21, 1912, in which the dial is rotated intermittently, and another illustrated in patent to E. 0. Davis, No. 1,050,432 dated January 14, 1913, in which the dial revolves continuously. My presentinvention is adapted more particularly to a machine in which the dial moves continuously and is-intended to overcome some of the difficulties heretofore experienced in connection with the operation ofknown devices of this type, althoughthe invention can in part be effectively applied to loopers in which the movement of the dial is intermittent. In previously known looping machines, the thread needle supporting mechanism has been adapted to be moved laterally during that period of its reciprocatory movement in which the thread needle is effectively engaging the loops of fabric to be connected. Oneresult of this combined motion has been, in some instances, to distort the loops of fabric owing to the change in relative position between the longitudinal axes of the thread needle and the particular impaling pin in connection with which the needle might be operating. This can be readily understood, inasmuch as the impaling pinis moving through an arc, whereas the thread needle is simultaneously moving in a lateral direction. One of the objects of my invention is to' provide in a looping machine thread needle supporting and actuating mechanismwhereby, in addition to its forward and backward movement, the thread needle is subjected to an arcuate deflection whereby its longitudinal axis re; mains parallel with the longitudinal axis of the impaling pin in connection with which it opera One embodiment of my invention is illustrated in the drawings accompanying the present specification, and in which Figure 1 is a plan view of a portion of a looping machine,

Figure 2, a side elevation of the thread needle supporting and actuating mechanism, 66 Figure 3, a detail partly in section,and

sliding rod 7 is also supported by the bracket 5 and carries at its forward end a thread needle 8 to which reciprocatory motion is imparted from the rod 6 by means'of aconnecting rod 9, the forward and back movement of said rod 6 being effected by means of a suitable connection with a main driving shaft 10 having an eccentric l1 cooperating with a link 12 which is pivotally secured to a lever 13. A link 14 connects the free end of the lever 13 with the rod 6. The connection between the link 14 and the lever 13 is preferably a ball joint, as indicated in Figure 1, to permit the arcua-te d'efiection of the free end of the bracket 5. As indicated in Figure 1, the shaft 10 carries a pinion 15 meshing with a gear 16 mounted on a shaft 17 to which is secured an eccentric 18 positioned to engageand deflect a lever 19 ivoted at 20. One end of an adjustable link 21 engages a slotted guide member 22 mounted on or forming a part of said lever 19, the opposite end of said link 21 being pivotally secured to the bracket Sat 23. A coil spring 24 has one end secured to a stationary portion of the machine, such as the dial supporting arm 25, the other end being secured to the bracket 5 and adapted to retain the same normally in retracted position.

The dial may be rotated by any suitable actuating. means such for example "as a shaft 26 and gears 27 and-28 cooperating with a rack 29 secured to said dial. 1

It will be noted in connection with Figure '1 that the thread needle 8 is normally posi-j tioned with its longitudinal axis parallel to a radius of the circle formed by the ring of impaling pins 4. The bracket 5 is also mounted concentric with said ring of impaling pins and with its free end adapted to be deflected against resistance (if-spring 24 in an are around the common center.

In operation, the loops of fabric to .be' connected are positioned on the impalingpins 4. The dial revolves either, continue ment with the longitudinal axis of the needle 8 in its normal retracted position, the needle is moved forward and into engagement with the loops suspended on said pin.

Simultaneously, the rotation of cam 18 im:

parts an arcuate movement of translation to the free end of bracket 5 and thereby to the needle 8 so tliat'the needle travels through an arc of a circle simultaneously with the advancing movement of the pin with which it is in cooperative relation. The thread needle is then retracted and further rotation of the cam 18 permits the return of the bracket 5 to normal beginning position.

From the foregoing description and the mode of operation set forth in connection therewith, it will be apparent that the armate deflection of the needle in alignment with each impaling in permits the joining of loops of fabric in a most efiective and expeditious manner. It will be understood, of course, that in forming loops the thread needle 8 cooperates witha suitable looper hook, not shown, but which may be of any well known construction, such for example as that shown in my patent previously referred to.

I claimas my invention:

1. In a looping machine, the combination of a rotatable dial having a plurality of radially disposed impaling pins, actuating radially disposed impaling pins, means for rotating said dial, a reciprocating thread needle, a needle support, and means for deflecting said support during reciprocating movement of the thread needle whereby the longitudinal axis of the thread needle is maintained constantly parallel with a radius of the dial.

4;. In a. looping machine, the combination of a reciprocating thread needle, a support therefor, a plurality of radially disposed impaling pins, means for moving said pins in succession past the path of the thread needle and means for elfecting arcuate deflection of said support to maintain the longitudinal axis of the thread needle parallel with the longitudinal axis of each impaling pin while the latter is in effect cooperative relation with respect to said thread needle.

In testimony whereof, I have signed my name to this specification this first day of May, 1925.

MAX KOHLER.