US1810679A - Protective lock for loom reversing mechanism - Google Patents

Description

June 16, 1931.

| ROGERS PROTECTIVE LOCK FOR LOOM REVERSING MECHANISM Filed Jan. 10, 1930- 4 Sheets-Sheet l IIWVQRTOI. Leonard PLRogers byfi wl 5M? FM;

, M. ROGERS 1,810,679

PROTECTIVE LOOK FOR 1 00M REVERSING MECHANISM Jane 16, 1931.

4 Sheets-Sheet 2 Filed guL 10, 1930 June 16, 1931. 1.. M. RCGERS 1,810,679

PROTECTIVE LOCK FOR LOOMREVERSING MECHANISM Filed Jan. 1 0, 1930 4 Sheets-Sheet 3 Fig.3.

Invenfor.

. Leonard M. Rogers Smdi ATTys June 16, 1931. M. ROGERS 1,810,679

PROTECTIVE LOCK FOR LOOM REVERSING MECHANISM Filed Jan. 10, 1930 4 Sheets-Sheet 4 Fig. 6.

lnvenTor.

Leonard N. Rogers byfMWaW Arrys.

Patented June 16, 1931 uNrrEn srarss TE T oFFl'cEf;

LEONARD M. ROGERS, or MnNnoN, IvIAssAcI-r sETTs, ASSIGNOR ro DRAPER CORPORA- TION, or I-IOPEDAL'E, MASSACHUSETTS, A CQRBORATION or MAINE rno'rn o'rrvn LOCK r012. oom nEvEnsIrreMEenAivIsM Application filed January 10, 1930. Se'riaINo. 419,968.;

This invention relates to improvements in looms having continuously rotating driving mechanism and power-transmitting mechanism adapted to be releasably connected thereto to actuate the parts of the 100111 in a normal direction to weave a fabricand manually controlled, alternatively operable, power-transmitting mechanism for reversing the direction of movement of the parts of the loom, and the object of the invention is to provide means for preventing the actuation of the manually operable auxiliary power-transmitting mechanism until the power-transmitting mechanism 'for producing the normal operation of the loom has been released. V

More specifically the invention relates to improvements in looms having reversing mechanism of thecharacter disclosed inthe applications of Verner Lindsjo Serial Number 407,916, filed November 18', 1929. I

In usual operation of the 100m the actuation of the knock-oft mechanism of the loom is such that upon stoppage of the loom,

upon detection of failure of filling, the-lay is in engagement with'or in proximity to the tell of the cloth. In order to obtain access to the faulty filling thread it is necessary for the weaver to move'the lay away from the tell of the cloth and it is also desirable so to position the shed-forming mechanism as to open the shed in which the mispick occurred, thereby enabling the faulty filling to be readily withdrawn. To accomplish this the weaver usually grasps the hand wheel of the loom and rotates the same in "a direction to actuate the movingparts in a reverse dlrection to that of their normal operations.

f It is diilicult to run the looms backwardly Where the. looms arewide andheavy and particularly in multiple harness looms. In the construction disclosed in the application of Verner Lindsjo above identified, manually controlled, auxiliary power-transinitting mechanism is provided for actuating the movable parts of the loom in a reverse'direction from the continuously rotating power-actuated mechanism for thepurpose of moving the lay away from the fell oi the cloth, and also to open the shed in which the mispick occurred.

The object of the present invention is to provide means for preventing actuation of the manually controlled, auxiliary, powertransmitting mechanismunless and until the mechanism for causing normal operation of the 100111 is released.

A preferred embodiment of the invention is. illustrated herein as applied to the construction disclosed in the Lindsjo application aforesaid, but it will be understood that the invention is broadly applicable to other types of mechanism whichf'comprises means for causing a reversal ofthe direction of movement of the movable parts of the loom. Inasmuch the invention is embodied in a usual type of loom only such portions of the loom are illustrated in the drawings as are necessary .to showrthe application of the invention thereto.

In the drawings: v

Fig. l is a sideel evation of a portion of the loom side illustrating the driving mechanism, r

I Fig. Q'is an elevation of a portion of the opposite'side of the loom to that shown in Fig. 1; i '1 d Fig. 3 is a vertical section longitudinally of the loom, viewed toward the loom; side, illustrating the manually operable lever mechanism for controlling the auxiliary power-transmitting mechanism Fig. 4 is a detail view illustrating the means for locking the controlling mechanism for the, auxiliary power-transmitting 'mech anism when the power-transmitting mechanism for causing normal operation of the loom is in operating position, but showing the parts of the locking mechanism inreleased position; and i Fig. 5isfla plan view of a portion of the mechanism forv controlling the pinion through which reverse movement is; imparted to the loom. 7 3

Fig. 6 is an end elevation viewed from the rear of the loom. 7 v r The loom illustrated in the accompanying drawings comp'rises'the usual loom sides 1 and 2 with abracket 3 built out from the loom side 1 to support the journals for the driving shaft 4 upon which is rotatably mounted a driving member 5, preferably in the form of a large gear which is continuously actuated by a pinion 6 upon a shaft 7 of an electric motor.

Suitable, releasable, power-transmitting mechanism is provided for actuating the movable parts of the loom in a normal direction to weave a fabric. As illustrated herein this is accomplished by the usual clutch mechanism for connecting the gear to the driving shaft 4, the clutch being controlled through a yoked lever 8 which is actuated through a lever 9 by a slide 10 upon the end of the starting rod 11 which extends across the loom and is connected by toggle mechanism 12 and a link 13 to the lower end 14 of a starting lever 15 which is fulcrumed upon a stud 16. The usual brake lever 17 is also fulcrumed upon the stud 16 and is engaged by a boss 18 upon the starting lever in such a manner that when the starting lever is drawn to starting position the brake lever is also actuated to release the usual spring actuated. braking mechanism.

When the clutch upon the shaft 4 is in engagement with the main driving gear 5, the shaft 4 is rotated, and a pinion 19 upon the main driving shaft actuates a gear 20 upon the main cam shaft 21. The gear 20 engages a gear 22 upon the main crank shaft 23, the relation of the gears 20 and 22 being such as to provide the usual two-to-one drive of the crank shaft.

The lay 24, which is mounted upon swords 25, is actuated from the main crank shaft in the usual manner, and usual mechanism (not shown) is also provided for actuating the picker stick 26 from the cam shaft.

The loom is provided with usual automatic controlling mechanism which in case the shuttle fails to box, positions a dagger 27 to engage a frog 28 which is slidably mounted upon the loom side, and in the particular construction shown has a downwardly extending offset end portion 29 which engages a swinging arm 30 which is pivoted upon a stud 31 and which, when moved by the forward movement of the frog, engages the lower end of the starting lever 14 and moves the same from running position to knock-off position, as shown in Fig. 2, and permits the application of the brake through the usual brake-applying spring. I

By the interposition of the swinging arm 31 the effective range of movement of the extension 29 of the frog is increased and more effective actuation of the knock-off mechanism is provided.

' In the particular type of loom shown pivotally mounted harness levers 32 are reciprocated by harness-actuating cams 3 which are secured to an auxiliarycam shaft The cam shaft 34 has secured to it a bevel gear 35 which is driven by a pinion 36 upon the main cam shaft 21. Usual mechanism (not shown) operates the takeup mechanism of the loom from the cam shaft 21.

Inasmuch as the mechanisms above described are those in usual types of looms, further detail description is not required.

WVhen, in the usual operation of such looms, failure of filling or mispick occurs, the loom is stopped and in order to position the lay and shed properly for pick-out the loom is turned backward by a hand wheel 37 which is secured to the main crank shaft In wide looms, and particularly multiple harness looms, the weaver is compelled to use great force to turn the loom backwardly for pick-out and strong weavers are required to operate such looms. In the con struction disclosed herein supplemental power-transmitting mechanism, operated from the continuously rotating driving mechanism, is provided to reverse the direction of movement of the movable parts of the loom to withdraw the lay from the fell of the. cloth and to open the shed in which the faulty filling lies, or in which mispick occurred.

The auxiliary power-transmitting mechaism illustrated herein comprises a pulley 38 preferably having a V-shaped periphery 39 adapted to engage a complementary V- shaped face 40 in the periphery of an auxiliary pulley 41 which is fixedly secured to the main driving gear 5. The pulley 38, which is normally out of engagement with the pulley 41, is rotatably mounted upon a stud 42 projecting from the upper end of an arm 43, the lower end of which is provided with a boss which is fixedly secured to a sleeve 44 which extends acrossthe loom andis rotatably mounted in suitable bearings in the loom side and in a bracket 45 carried byx one of the stands 46 which supports the auxiliary cam shaft for actuating the harness levers.

The sleeve 44 has rigidly secured to it an arm 47 he end of which is pivotally connected to a vertical link 48 the upper end of which link is pivotally connected to the horizontal arm 49 0f a bell crank lever 50 which is pivotally mounted upon a stud 51 extending from the arch 52 of the loom. The upper end of the bell crank lever 50 is provided with a handle 53 and also with a hook or latch 54 which engages a keeper 55 secured to one of the members of the loom arch. The connection is such that whenthe latch 54 is disconnected and the handle 53 pulled forwardly, the arm 49 of the lever will raise the link 48, thereby rocking the arm 47 which is secured to the sleeve in a direction to move the pulley 38 into frictional engagement with the auxiliary harness-actuating camshaft 34.

The shaft 62 has slidably feathered upon it a pinion65 which is adapted to engage a gear 66which is fixedlyv secured to, the auxiliary cam shaft 34 and preferably is made integral with the gear 35. A spiral spring 67 surrounding the short shaft 62 and interposed between the hub of the worm gear 61 and the hub 68 of the gear 65-tends to force the gear 65 into engagement with the gear '66 of the cam shaft. It. is, hoW-. ever, normally held outcof engagement with the ear66 by a lever 69 (see Fig. 5) having ayolze 70 provided with studs which engage a groove 71 upon the hub. 68 of the pinion 65. a The lever 69 isiprovided witha boss 72 which is fulcrumed upon a stud 73 carried by a bracket 74 mounted upon'the supple:

mental frame which supports the auxiliary camshaft 34; \The opposite end of the lever 69 is provided with a stud 7 5which extends into a slot. 76 ina link ,77' which. is pivotally connected to an arm 78 having a boss 7 9 which is fixedly secured to the sleeve The arm 78, is so positioned upon the sleeve44 that. when the sleeve is in normal positionin which .its arm 43 supports the pulley 38 out of engagement with the pulley 41 of the rotatable driving member, the lever 69 will be held in position toremove the pinion 65*from engagement with the gear 66against the tension of the spring 67. When, however,the'sleeve is rocked by the actuation of the handle 53 of the bell crank lever ina direction to move the pulley 38 of the auxiliary power-transmitting mechanism into engagement with the pulley 41 of thedriving gear 5, the arm 78 of the sleeve 44 willxbe rotated in a direction to permit the spring 67' to force the pinion into engagement with the gear 66 and such engagement will ;be effected before the pulley 38 frictionallyengages the pulley 41 ,7

upon the rotatable driving member. 7

Continued -movement of the handle 53 will thereafter cause frictional driving engagement between the pulley '38 of the auxiliary power-transmitting mechanism and the pulley 41 of the continuously rotatable driving member, thereby causingthe pulley 38 to actuate the sprocket gear 58, thus rotating the, auxiliary shaft 59, the worm 60 and the worm gear 61 to rotate the I shaft 62 and through the pinion 65,

which is feathered upon it, to rotate the gear 66 -which is fixedly secured to the a-uxiliarycam shaft 34, thereby in turn drivingthe auxiliary cam shaft 34 in a, re verse direction. This rotatio n of the cam shaft in the reverse direction causes the bevel gear 35, which is secured to the auxil-- iary cam shaft 34, to actuate the gear 36 whichis secured. to the cam shaft 21, thus causing the other movable parts of the loom" to move in a reversedirection to the normal direction of movement during the weaving operation. 1

By thus actuating the manually controlled auxiliary poWer-transmitting mechanism the lay may be withdrawn from the fell of the cloth and the sheds-forming mechanism properly positioned to permit pickout. i 1

In the construction disclosed in the application of Lindsjo' above mentioned,manually operable clutch mechanism is provided for disconnecting the main cam shaft 21. of the loom fromthe reversely actuated shed-operatingmechanism, so that the reverse movement of the shed-operating mechanism alone may be continued properly to open the shed in which the faultyfilling lies to facilitate pick-out. As suchradditional manually controlled means forms no part of the presentsinvention, specific illustration and description thereof is. not, required herein. I

The present invention relates to mechanism for preventing actuation of the alternative power-transmitting:,mechanism unless anduntil the clutch mechanism for causing normal operationof the loom is released. The particular means for thus locking the auxiliary power-transmitting mechanism against operation during the normal operation of the loom isillustrated'in Figs. 3 and 4'and comprises an arm 80 which is fixedly secured upon the starting rod 11 in such position that when the startingrod is moved longitudinally to startingposition the arm 80 will be moved into the path of an abutment 81 which desirably is fixedly but adjustably secured upon the link 48 which connects the horizontal arm 49 of the man ually operable bell crank lever 50 to the arm- 47 upon the sleeve 44. i

integral extended portion 82 which is guided and supported in'a slot 83 between i arms 84 and 85 of a bracket 86 which is secured to the loom side. Thus the arm 80 is rigidly held against vertical movement when engaged by the abutment 81 upon the link 48. 1

When knock-off occurs the starting rod 11 ismoved in the opposite direction thereby The arm-80 upon the starting'rod has an 9 ice moving the arm 80 outof the path of the abutment 81 so that upon stoppage of the loom the lever may be operated to bring the auxiliary power transmitting mechanism into operative relation to the friction pulley upon the driving gear, thus permitting the loom to be driven in a reverse direction through the auxiliary cam shaft as above described.

It will be understood that the particular embodiment of the invention shown and described herein is of an illustrative character and is not restrictive, and that various changes in construction and arrangement of parts may be made within the scope of the following claims.

Having thus described the invention, what is claimed as new, and desired to be secured by Letters Patent, is:

1. In a loom comprising a continuously rotating driving mechanism having an auxiliary frictional pulley, clutch mechanism for transmitting power from said driving mechanism to actuate the movable parts of the loom in a normal direction to weave fabric, manually controlled, alternatively operable, auxiliary power-transmitting mechanism having a friction pulley movable into frictional engagement with the friction pulley of said driving mechanism operable to actuate the movable parts of the loom in a reverse direction, and means for preventing engagement of said friction pulleys during power-transmitting engagement of said clutch members.

2. In a loom comprising an auxiliary cam shaft having cams for actuating the shedding mechanism and normally driven by the main cam shaft of the loom, a continuously rotating driving mechanism, clutch mechanism for transmitting power from said driving mechanism to actuate the movable parts of the loom in a normal direction to weave a fabric, manually controlled auxiliary power-transmitting mechanism alternatively operable to rotate the auxiliary cam shaft of the loom in a reverse direction and thereby to actuate the other parts of the loom in a reverse direction, and means for preventing actuation of said auxiliary power-transmitting mechanism during powertransmitting engagement of said clutch mechanism.

3. In a loom comprising an auxiliary cam shaft having cams for actuating the shedding mechanism and normally driven by the main cam shaft of the loom, a continuously rotating driving mechanism having clutch mechanism for transmitting power to actuate the movable parts of the loom in a normal direction to weave a fabric, means including a starting rod controlling said clutch mechanism, auxiliary power-transmitting mechanism alternatively operable to rotate said auxiliary cam shaft in a reverse direction and thereby to reverse the direction of movement of the other parts of the loom, a manually operable lever having a link connected to said auxiliary power-transmitting mechanism and operable to cause effective engagement between the same and said driving mechanism, and means operable by the movement of said starting rod in a direction to cause operative engagement of said clutch mechanism to prevent actuation of said lever.

4. In a loom comprising an auxiliary cam shaft having cams for actuating the shedding mechanism and normally driven by the main cam shaft of the loom, a continuously rotating driving mechanism having an auxiliary friction pulley, clutch mechanism for transmitting power from said driving mechanism to actuate the movablev parts of the loom in a normal direction to weave a fabric, means including astarting rod controlling said clutch mechanism, auxiliary power-transmitting mechanism having a friction pulley movable into and out of engagement with the auxiliary pulley of said driving mechanism alternatively operable to rotate the auxiliary cam shaft of the loom in a reverse direction and thereby to reverse the direction of movement of the movable parts of the loom, a manually operable lever having a link connected to said auxiliary power-transmitting mechanism operable to move the pulley thereof into and out of engagement with the auxiliary pulley ofsaid power-transmitting mechanism, and co-operating means on said starting rod and said link movable into locking engagement by the movement of said starting rod in a direction to cause operative engagement of said clutch mechanism and thereby acting to prevent actuation of said lever.

5. In a loom comprising an auxiliary; cam shaft havingcams for actuating the shedding mechanism and normally driven by the main cam shaft of the loom, a continuously rotating driving mechanism having an auxiliary friction pulley, clutch mechanism for transmitting power from said-driving mechanism to actuate the movable parts of the loom in a normal direction to weave a fabric, means including a starting rod coutrolling said clutch mechanism, auxiliary power-transmitting mechanism having a friction pulley movable into and out of engagement with the auxiliary pulley of said driving mechanism alternatively operable'to rotate the auxiliary cam shaft of the loom in a reverse direction and thereby to reverse the direction of movement of the movable parts of the loom, a manually operable lever having a link connected to said auxiliary power-transmitting mechanism operable to move the pulley thereof into and out of engagement with the auxiliary pulley of said power-transmitting mechanism, an abutment adjustably mounted upon said link, an arm on said starting rod movable into the path of said abutment as the starting rod is moved 111 a directlon to cause operative engagement of said clutch mechanism, and

rigid members mounted on the loom side LEONARD, M. ROGERS.

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