US1255859A - Knotter. - Google Patents

Description

H. D. COLMAN.

KNOTTER.

APPLICATION FILED JUNE23I 1916.

w Patented @6h I2, 19m.,

2 SHEETS-SHEET 1.

II. COLMAN.

KNOTTER. APPLICATION FILED JUNE 23. 1916.

2 SHEETS-SHET 2.

rendesse.

illustrates the stripper hook.

nrtnrnn amarres ramena ernten.

HOWARD' 1D. COLMN, OF ROCKFORD, ILLINOIS, SSIGNOR, BY MESNE ASSIGNMENTS, T05 HOWARD D. COLT/IAN, LUTHER L. MILLER, AND HARRY A. SEVERSON, CPMTHEF AS BARBER-COLMAR COMPANY, OF ROCKFORD, llLLlNOIS.

KNUTTElEt.

Patented 'Fei-o.. 12., 1918.

@riginal application lerl .April 1, 1909, Serial No. 487,347. Divided and this application led tune 33, 1913.

. Serial N0. 105,357.

To aZZ whom it may concern."

Beit known that l, HOWARD D. Corman, a citizen of the United States, residing at Rockford, in the county of ll/innebago and State of illinois, have invented certain new and useful improvements in lnotter's, of which the following is a specification.

'1`his application is a division of application Serial No. 487,347, led April 1, 1909 (Patent No. 1,191,102 dated July 1l, 1916). rll`he present invention relates particularly to the means for actuating the tying-bill and the clamping and stripping devices.

1n the accompanying drawings, Figure 1` is a perspective view of a knetter embodying the features of my invention. Fig. 2 is a view of a certain thread guide. Fig. 3 Figs. 4 and 5 are views of certain thread guides. Fig. 6 is a side elevation of the knetter. Fig. 7 is a fragmental front elevation. Fig, 8 is a section on line 8 8 of Fig. 6. Figs. 9 and 10 are side elevations of a thread-clamping member.

rll`he knetter comprises a tying bill 1 which may be of any suitable construction, that herein shown being substantially similar to the one illustrated in detail in Patent No. 755,110, dated March 22, 1904. The movable jaw of the tying-bill is actuated by means of an extension located within a cam barrel 2 which also is similar to the one shown in said patent. 'lhe tying billv is carried by a shaft 3 (Fig. 6) which is rotatably mounted in the supporting frame of the knetter. Fixed to the shaft 3 is a bevel pinion 4 (Fig. 7) that meshes with bevel gear teeth 5 formed upon one side of a segment 6. This segment is fixed upon a rock shaft 7 which is mounted in the framework of the knotter. The means for turning the shaft in the direction to actuate the knetter to tie the knot consists of a spring 8 anchored at one end to any suitable point and attached at its other end to a pin 9 on a crank arm 10, said crank arm being xed to the shaft 7. The parts are releasably held in the initial position by means of a locking pawl 11 fixed to a pivot 12 which is journaled in the supporting framework, said pawl being arranged to engage a locking shoulder 13 fixed with relation to the shaft 7.. 1l. hand lever 14 is secured to the pivot 12. A spring 15 normally holds the pawl 11 in engagement wilh the shoulder 13.

At one side of the tying bill is fixed a thread guide 1G having therein a thread-receiving slot 17. At the opposite side of the tying bill are fixed two thread guides 18 and 19 having slots 20 and 21 which are alined withtheslotl7. Betweentheguides 18 and 19 is a stripper hook 22. The hook 22 is formed on a slide 23 mounted in the framework of the knetter. rlChe slide 23 is guided by means of two pins 24 set in the framework and extending through an elongated opening 25 in the slide. On the slide 23 is a flange 26. Rigid with the Harige 2G is an arm 27. The slide 23 is arranged to be reciprocated by means including an arm 23 pivoted to the framework at 29, said arm being connected to the arm 27 by means of a pi-n-and-slot connection. The arm 28 iS rigid with an arm 30 having a roller stud 31 that lies in a cam groove 32 formed in one side of the segment G. lThe cam groove 32 comprises a dwell portion 32a and a cam portion 321.

Pivotally secured to the thread guide 19 at 33 is a thread clamping member 34 comprising a spring clamping portion 35 lying in Contact with the side of the thread guide 19 which faces the thread guide 18. 1'l`he edge 36 (Fig. 9) of the clamp member '34, and the lower edge of the portion 35 are arranged to be moved down over the slot 21 in the guide 19 by means of a spring 37 anchored at 38 and connected to the clamping member 34 by means of a link 39. The stripper hook 22 is arranged to move the clamping member 34 up out of register with the slot in the threadguide 19, the clamping member having a lip 40 which the stripper hook 22 engages as said hook is returning to initial position.

)The means for resetting knetter to initial position may be of any suitable character. Herein is shown a hand lever 41 pivotally mounted upon the rock shaft 7 and carrying a pin 42 (Fig. 1 arranged to engage a shoulder 43 on the crank arm 10. By means of the hand lever 41, the operator may turn the crank arm 10 against the tension of the spring 8 until the pawl 11 springs into place beneath the locking shoulder 13.

the parts of the I have also shown means whereby a treadle (not illustrated) may be employed to reset the knotter. Said means comprises a rod 44 having at its upper end a head 45 which is provided with a segmental slot 46 to receive a pin 47 xed with relation to the hand lever 41.

If desired, means may be provided for supporting the end of a reserve thread. I-lereinlis shown a spring clamp 48 supported upon the knotter framework in position to hold the end of a reserve thread extending through the slots of the thread guides 16, 18 and 19 and beneath the tying bill 1 and the stripper hook 22.

The active threads may be supported in any suitable manner. Herein is showna bracket 49 to which is secured a pivot pin 50 and two stop pins 51 and 52. On the pivot pin 50 are mounted thread-lifters 53 having thread-receiving eyes 54 and weighted rear ends 55. When threads are passing through the eyes 54 the tension of the threads is sufiicient to hold the thread-lifters in contact with the stop pin 52, but when a thread exhausts the weighted end 55 of the lifter engaged by said thread causes the lifter to swinof into contact with the stop pin 51, thus lifpting the exhausted thread above the running threads so that the operator mayreadily pick it up and place it in the knotter.

Assuming that the reserve thread is in osition at the knetter, as shown in the drawings, the operation is as follows: The operator inserts` the exhausted thread into the slots 17, 20 and 21, said thread extending from the eye 54 of its lifter thence through the slot 21, beneath the clamping member 34 and the stripper hook 22, through the slot 20, beneath the tying bill 1 and through the slot 17. The operator then releases the spring 8 to action by pulling forward on the hand-lever 14, thus withdrawing the latch 11 from beneath the locking shoulder 13. In the rotation of the shaft the tying bill 1 is rotated to form the loo s of the knot 'and to trim oft the ends of t e knot. As the roller 31 (Fig. 6) enters the cam portion 32b of the cam groove 32, the stripper hook 22 is drawn downwardly. As the stripper hook 22 descends, the clamping portions 35 and 36 move across the slot 21, thus clamping the threads. rllhe descending stripper hook 22 pulls the threads down in the space between the guides 18 and 19, thereby pulling the loops of the knot tight and finally pulling the ends of the knot out of the tying bill. In the stripping operation the lower wall 20EL (Fig. 4) of the slot 20 serves as an abutment across which the threads are pulled by the stripper hook.

The extent of movement imparted tothe mechanism by the actuating spring 8 is limited in a suitable way, as by contact of mamaria the shoulder 43 with the pin 42 on the hand lever 41. The latter normally rests against the portion 41a of the framework of the knotter.

Io release the threads from the knotter, the hand-lever 41 or the treadle hereinbefore mentioned is operated to turn the shaft 7 in the reverse direction until the pawl 11 springs into place beneath the locking shoulder 13. In the upward movement of the stripper hook 22, said hook engages the lip 40 and thereby raises the clamping member 34 above the slot 21, thus freeing the united threads.

I claim as my invention:

l. A knotter having, in combination, a shaft, a tying bill on said shaft, a rockshaft, a member fixed on the rock-shaft and having bevel gear teeth upon one side, a bevel pinion on the tying-bill shaft meshing with said bevel gear teeth, thread guides in operative relation to the tying bill, a, stripper hook operatively located with reference to said guides, a slide carrying the stripper hook, a lever connected to said slide, the before mentioned member havingin one side a cam slot, a stud on said lever lying in said cam slot, and means for turning the rock-shaft.

2. A knotter having, in combination, a shaft, a tying bill on said shaft, a rock shaft, a drivmg'connection between said shafts, thread guides in operative relation to the tying bill, a stripper hook located in the space between two of said guides, a slide carrying the stripper hook, a lever connected to said slide for moving the stripper hook in said space, a cam on the rock shaft, a stud on said lever engaging said cam, and means for turning the rock shaft.

3. A knotter having, in combination, a tying bill, a thread clamp, a stripper hook', and means on the stripper hook for normally holding said thread clamp ineective to clampa thread.

4. A knotter having, in combination, a tying bill, a thread guide, an abutment between the tying bill and the thread guide, a stripper hookl arranged to engage the threads at a point between the thread guide and the abutment, and a thread clamp arranged to clamp the threads at the thread guide before the stripper hook operates.

5. A knetter having, in combination, a tying bill, a thread. guide, knot-stripping means arranged to operate between the tying bill and said thread guide, a clamping member movably mounted on said thread guide, and means for actuating said member to clamp the threads at the thread guide.

6. A knotter having, in combination, a tying bill, a thread guide, a stripper hook arranged to engage the threads at a point between the thread guide and the tying bill,

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a, thread clamp membenand a spring arranged to move the clamp member to clamp guide, and means for actuating said mem- 10 the threads at the thread guide, the stripper ber to clamp the threads at the thread guide, hook being arranged to move the clamp the stripping means being arranged to actumember to release the threads. ate the clamping member to release -the 5' 7. A knotter having, in combination, a threads.

tying bill, a thread guide, knot-stripping In testimony whereof, have hereunto set M5 means arranged t0 operate between the tymy hand. ing bill and said thread guide, a clamping member movably mounted on said thread HWARD D. CULMAN.

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