US1150448A - Weft-replenishing loom. - Google Patents

Description

A. F. MORELL. WEFT REPLENISHING LOOM. APPLICATION FILED NOV-12. l9l3- Patented Aug. 17(1915.

3 SHEETS-SHEET I.

ALFRED F. MORELL, OF WORCESTER, MA

nae.

SSACHUSETTS, ASSIGNOR TO CROMPTON &

KNOWLES LOOM WORKS, A CORPORATION OF MASSACHUSETTS.

WEFT-REPLENISHING LOOM.

To all whom it may concern:

Be it known that I, ALFRED F. Momma, a citizen of the United States, residing at Worcester, in the county of Worcester and State of Massachusetts, have invented certain new. and useful Improvements in Weft- Replenishing. Looms, of which the following is a specification.

My invention relates to automatic weft replenishing looms, which have mechanism for supplying a fresh shuttle, or a fresh bobbin, on the substantial exhaustion of filling on the bobbin in the active shuttle, and my invention particularly relates to filling thread cutting mechanism, to cut the filling thread on the substantially exhausted bobbin in the active shuttle, and also to cut the end of the filling thread on the fresh bobbin, to be supplied in place of the substantially exhausted bobbin.- Both ends are cut adjacent the selvage, and the cutting mechanism operates for two consecutive picks. 3

My invention relates more particularly to weft replenishing looms having shuttle changing mechanism of the type shown and described in the pending application for Letters Patent of the United States, Serial No. 799,390, filed November 5, 1918.

The object of my invention is to provide an improved filling thread cutting mechanism, operated independent of the transferrer mechanism, which may be applied to either the shuttle changing type of loom, or the bobbin changing type of loom.

In my improvements I preferably provide a filling thread cutting mechanism which has the lower blade secured to the loom temple, adjacent the selvage, and the upper blade pivotally mounted on said temple, as will be hereinafter fully described.

In the accompanying drawings, I have only shown a portion of a loom, with my improvements in filling thread cutting mechanism applied thereto, suificient to enable those skilled in the art to understand the construction and operation thereof.

Referring to'the drawings :Figure 1 is a front View of a portion of a loom, showing the location of, and the connections to my filling thread cutting mechanism; the loom is broken away through the center. Fig. 2 is a section, on line 2, 2, Fig. 1, looking in the direction of arrow a, same figure; in this figure the filling thread cutter, and the Specification of Letters Patent.

Application filed November 12, 1913.

ofthe rod head 12 'ters Patent,

Patented Aug. 1'2, 1915.

Serial No. 800.654.

mechanism. operating the same, is in its normal inoperative position. Fig. 3 is a partial plan view of parts shown in Fig. 1, looking in the direction of arrow 6, same figure." Fig. 4 is a section, corresponding to Fig. 2, showing the lifter rod in an opposite position, and, Fig. 5 corresponds to Fig. 2, but shows the filling thread cutter, and operating mechanism in their operative position.

In the accompanying drawings, 1 is the loom side, having supported thereon the breast beam 2. Fast to the upper part of the loom side 1 is a stand 3, to which is secured, by bolts 4, the feeler stand 4:. Fast to the lower part of the loom side 1 is a stand 5. In the boss 5 on the stand 5 is secured, by a set screw 6', a stud 6, which has loosely mounted thereon the hub 7 of a lever 7, operated by a cam-8 secured to the bottom shaft 9, see Fig. 1. A rocking motion is communicated to a stud 7" on the lever 7, pivotally connected to the lower end of a connector 11. The upper end of the connector 11 is vertically guided in a boss 4 on the stand 4;, and has secured on its upper end a rod head 12. The upper end carries a pin 12, on which is pivotally mounted a lever 10, see Fig. 1. A rocking motion is communicated to the lever 10, through the cam 8, lever 7, and connector 11, and on the substantial exhaustion of the filling in the active shuttle, through the indication of the filling detector or feeler, the lever 10, is operated to form a fulcrum, as fully described in U. S. Let- No. 972,722, dated October 11, 1910.

To the lower side of the breast beam 2 are secured stands or hangers 13, and in the bosses 13, at the lower end of which is loosely mounted a rod or shaft 14. On one end of the rod 14, see Fig. 1, is secured, by

a set screw 15, the hub of a lever 15. The

-end with a stud 26,

outer end of the The cam 8 is so shaped that when an indication for a change of filling occurs it holds the rod 14, through intermediate connections, in operative position for nearly two picks.

I will now describe my improvements in filling thread cutting mechanism, combined with the parts of a loom above described.

To the rod or shaft 14, which has a rocking motion, is secured, by a set screw 18,

1 the hub 19' of a downwardly extendin lever 19, see Fig. 4. On the lower on of said lever 19 is a stud 19", to which is pivotally connected one end of a connector 20; the other end of said connector 20 is connected to a stud 21' secured in a collar 21, which collar loosely guides a vertically moving rod 22, termed the lifting rod. The upper end of the rod 22 is bent inwardly at 22', and has a rod head 23 secured upon its upper end, which has a shoulder 23. The rod head 23 is guided at itsupper end in an opening'24 in an arm 24, see Fig. 3. The lower end of the lifting rod 22 has ad- .justably secured thereto a rod head 25,

which is pivotally connected at its lower which extends through a slot 27 in a lever 27. The lever 27 has its hub 27 loosely mounted on a stud 28, secured by a set screw 28 in the boss 29' on the stand 29, see Figs. 1 and 3. The stand 29 is adjustably secured by bolts 30 to a stand 30, fast to the loom side 1.

Loosely mounted on a stud 31 on the inner end of the two armed lever 27, is a cam roll 32, shown by broken lines in Fig.2, which roll is engaged and operated by a cam 33 secured on the bottom shaft 9. A tension spring 34 is secured at onelend to the lever 27, and at its other end to the floor, or to some stationary part of the loom, not shown, and acts to hold the cam roll 32 against the periphery of the cam 33. Through the revolution of the bottom shaft 9 and the cam 33 thereon, a vertical up and down movement is communicated to the lifting rod 22. The cam 33 has two actuating surfaces thereon at unequal distances circumferentially, to move the lever 27.

On the breast beam 2 is supported a stand 35, to which is adjustably secured, by screws 36, the loom temple 37; to the other end 37 of the loom temple-37 is secured, by screws 38, the lower stationary blade 39 of the cutting mechanism. The blade 39 has a recess 39 therein, into which the fillin thread is carried or pushed on the forward beat of the lay. Also to the temple 37 is secured, by a set screw 40, a bushing 41, the

bushing 41 forms a shoulder 41'. Loosely mounted onthe bushing 41 is the hub of the arm 24. The upper or movable cutter blade 43 is secured by screws 44 to the upper portion 24" of the arm 24. The movable cutter blade 43 is held in its shuttle,

normal or open position by a tension spring 44', which has one end secured to an ear 24" on the lever 24; theother end of said spring 44- is secured to an arm 35' on the temple stand 35.

Upon the indication by the fillin or detector, of a substantially ex austed bobbin, the lever 19 is caused to remain in its outward position for nearly two picks, causing the shoulder 23' on the rod head 23 to be guided under the outer portion 24 on the arm 24, see Fig. 4, and on the forward beat of the lay, the lifter rod 22 is moved to its highest position, and the shoulder 23, acting against the spring 44', causes the movable blade 43, secured to the arm 24, to be operated, thereby severing, on the front center movement of the lay, the filling thread adjacent the selvage, on the substantially exhausted bobbin in the' active shutt e. ated a second time in a like manner, except that it operates just before the lay reaches the front center, thereby severing the filling adjacent the selvage on the fresh bobbin, the end of the filling being attached to the breast beam near the supply of spare shut- ,tles, and as the shuttle which has been transferred to the lay, is picked across the lay, the filling thread extends from the breast beam to the fell, passing in front of th cutter blade, and is severedbefore the lay reaches its front center, after which the lever 19 is returned to its normal position. The collar 21 guides the lifter rod 22, and holds the shoulder 23 on the rod head 23 in its inoperative position, shown in Fig. 2.

p The movement of the cutter blade is controlled directly by the operation of the detecting means, which hold the vertically moving rod 22 in operative connection with the arm 24 of the cutter blade during the two movements of the cutter, when a change of filling is made, and they operation of the parts is briefly as follows :When an indication for a change of filling at the first front position of the lay takes place, and the shuttle has returned to the transferring end of the lay at the second front position of the lay, the cutter makes-its first movement cut ting the end of the spent filling from the as it is being transferred, and then the new filling is thrown into the new shed with its loose end attached to the breast beam, and as the lay comes to its third front position, the detecting means again act to feel for a change of filling, consequently the second movement of the cutter, under the control of the first operation of the detecting means for substantially two picks, must be made before the lay reaches its third front position, at which time the detecting means assumes a new second position to detect for another change of filling consequently the cam 33 has an actuating surface which opfeeler The movable cutter blade 43 is oper crates the cutter when the lay is in its front position, which operates the cutter before the lay reaches its front position.

It is immaterial as to the shape or kind of thread cutter used, or in what manner it is supported on or by the breast beam, as

my invention relates to making said inechamsm inoperative when not required to cut a filling thread.

In addition to and in connection with the filling thread cutting mechanism above described, and shown in the drawings, I preferably use a device, independent of the cutting mechanism, for engaging the filling thread at the proper time, and pushing it between the cutters of the cutting mechanism. I have shown in the drawings one form of device or mechanism referred to, and I will now describe the same.

A stand 45 is secured at the back of the lay, see Figs. 2 and 3. Said stand has -a boss 45 at its lower end, in which is loosely mounted a rod or shaft 46. The rod 46 has a torsion spring 47 thereon, see Fig. 1, which is secured at one end to a collar 48, secured to the rod 46 by a set screw 49, see Fig. 1, and at its other end to the boss 45' on the stand 45. The hub 50' of a two armed lever 50 is fast on the rod 46, and the torsion spring 47 acts to rock or partially rotate the rod .46, and with it the hub 50 of the lever 50, secured thereon by a set screw 51.

The lever 50 has two arms, one of which 50 extends upwardly at the rear of the lay beam 2', and has attached to its upper end a thin plate 52, which extends at the rear of and is adapted to pass through the reed between the dents thereof. The plate 52 is in alinement with the cutting mechanism supported on the breast beam, and above described, and the free end of said plate 52, which extends between the dents of the reed, is adapted to engage with the filling thread as the lay beatsup, and push it into the slot 39 in the stationary blade 39 of the cutting mechanism. The other arm 50 of the lever 50, extends under the lay beam 2, and projects toward the front. of the loom, and in the path of a lever 53, fast on the rod or shaft 14. The arm 50 has a curved or cam shaped upper edge, forming an engaging surface, and the free end of the lever 53 also has a curved or cam shaped surface on its lower edge, forming an engaging surface, see Fig. 2.

On the arm 50 of the lever 50 is an adjusting screw 54, which may be turned in or out in the ear 50 on the arm 50*. The upper end of the screw 54 is in engagement with the underside of the lay beam 2, and acts to limit the rotary motion of the shaft or rod 46.

The operation of the filling thread pusher and another actuating surfaceand a lifter rod device will be readily understood by those skilled in the art.

When the rod or shaft 14 is rocked through the operation of the filling detecting mechanism, the lever 53 is depressed or lowered at its free end, and as the lay advances, the arm 50 of the lever 50, extending in the path of the lever 53, is engaged by said lever 53, which causes the arm 50 of the lever 50 to be depressed or lowered, and the other arm 50' to be moved toward the lay, to carry the plate 52 between the dents of the reed and cause it to engage the filling, to move it into the slot 39 in the stationary cutter blade 39, as shown in Fig. 5.

By means of the filling thread pusher mechanism above described, the thread is positively carried into the cutter mechanism. On the return movement of the lay, the spring 47 acts toreutrn the lever 50 to its normal position, shown in Fig. 2.

It will be understood that the details of construction of my improvements may be varied if desired.

Having thus described my invention, what I claim as new and desire to secure by Letters Patent is 1. In an automatic weft loom, having filling feeler, 0r detector mechanism, the combination with a filling thread cutter blade, and an arm to move said blade, the movement of said arm being under the control of said filling feeler, or detector mechanism during two consecutive picks, of a pivoted lever, and connections, intermediate said arm and said lever, under the control of said fillingfeeler, or detector mechanism, a driven cam, said cam having two actuating surfaces at unequal distances circumferentially, to move said lever. one surface to move said lever when the lay reaches its forward position, and the other surface to move said lever before the lay reaches its forward position.

2. In an automatic weft replenishing loom,- having filling feeler, or detector mechanism, athread cutter blade secured to an arm, and said arm, normally inactive, a cam surface on a driven shaft, a pivoted lever, intermittently moved by said cam surface, said filling feeler, or detector mechanism acting to cause the engagement of said lifter rod with said arm during two successive picks, to operate said cutter blade upon the near exhaustion of filling in the active shuttle, and again operate said lever for a new supply of filling.

3. In an automatic weft replenishing loom, having filling feeler or detector mechanism, a lay, a bottom shaft, a cam thereon, having two actuating surfaces, to move a pivoted lever, and said lever, connected to a lifter rod, and said lifter rod, and cutting mechanism, and connections between said cutting mechanism and said lifter rod, said rod, operating intermittently, one of its movements coincident with the front center movement of the lay, and its other movement just before the lay reaches its front center both movements under the control of said filling feeler, or detector mechanism.

4. In an automatic weft replenishing loom, having' a filling feeler, or detector mechanism, a thread cutter blade, an arm to operate it, a pivoted lever, and connections to said lever, a cam on the bottom shaft, having two actuating surfaces at unequal distances radially, to move said lever, one surface to -move the lever when the lay reaches its forward position, and the other to move the lever before the lay reaches that position, said filling feeler, or detector mechanism acting to make said mechanism operative upon the near exhaustion of filling in the active shuttle, during two successive movements of the cutter.

5. In an automatic weft replenishing loom, the combination with a filling thread cutting mechanismimounted on the breast beam, and operated independently of the ALFRED F. MORELL.

Witnesses:

J. C. DEWEY, M. HAAs.

Images