US2012053A - Picking motion for looms - Google Patents

Description

Aug. 20, 1935.. o. v. PAYNE PICKING MOTION FOR LOOMS 3 Sheets-Sheet 1 Filed Sept. 24, 1934 Qrruent or G's-car \l. pau ne Aug..20, 1935. o. v. PAYNE PICKING MOTION FOR LOOMS Filed Sept. 24, 1934 3 Sheets-Sheet 2 s e @M n u: t r W MM nV Nv m a Y a um .3 Sheets-Sheet 3 cqnoentor' Gscam V. Pan. we

O. V. PAYNE PICKING MOTION FOR LOOMS Filed Sept. 24, 1934 Aug. 20, 1935.

Qitor'nes Patented Aug. 2%,

V 2,012,053 J H r ck-mo. Morton FOB ooms spac Oscar V. Payne, Leicester, .Mass., assignor t'o Crompton t Knowles Loom Works, Worcester, Mass.,a corporation of Massachusetts 4 Applicationseptember 24, 1934, Serial savages '20 Claims. (Cl.139--142) This invention relates to picking'motions for looms and it is the general object of the invention to provide a silent and eflicient means to pro pel the shuttles in looms.

stick acting through a pic It is customary to pick shuttles by means of a ker located behind the shuttle and'moved inwardly at the time of picking. The stopping of the stick and also the shuttle causes considerable no ment of the parts involved, andit is an important ise and loss of adjustpart of my invention to provide a friction drive for the shuttle which will eliminate *the stick and usual picker.

This result I may attain by an endlessbelt driven by-an electric motor and held against the shuttle by pressure rolls or the like. The beltis in positi on to contact with the shuttle whenever the latter is looked, and switch controls excite the motor at the time of picking.

In this way the frictional force ,is distributed over a large area simultaneously and very little wear results on any one part of the-shuttle. The

motor is of the start and stop type and is practically instantaneous in its response afterthe switch is closed.

It is a further feature ofmy invention to place the shuttle as it enters the box and move it to a position where it will derive the. full'benefit of the subsequent picking stroke of the belt, To

. accomplish this result I use a reversing switch to give the motor a reverse motiontending to drag the shuttle deep into the way a maximum surface 0 shuttle box. In this f the shuttle is incon- 7 tact with the belt to insure proper picking.

A still further object of my invention relates to pressure means to cause the belt to-conform to the contour of the shuttle. As a specific means to accomplish this result I may employ a pair of rolls on a floating support positionto cause a normal deflection ofpart of the belt toward the shuttle path. In this wayand yieldingly held in the rounded nose and ,shoulder'of the shuttle are in driving relation with the belt. .The rolls and their supports may be associated with loom pro-gtector mechanism if desir Withthese and other objects .;in view which will appear as the description-proceeds, my invention-resides in the combination and arrange ment of parts hereinafterv described and set forth in theclaims. Inthe accompanyingdr invention applied thereto, Fig. 2 is an enlarged p I tion of arrow 2, Fig. 1',

awings, wherein a convenient embodiment of my invention. is set forth,

Fig. 1 is an end elevation of a loom having my lan view in thedirec- Figs. 3 and 4 are vertical sections on lines 3-.-3

and 4 4, respectively, Fig. 2,-

Figs. 5 and 6 are diagrammatic views of the parts indifferent positions,

Fig.7 indicates diagranunaticallytheact n of V kinaand I Fig. 8 is similarto'Fig. '1 but' relates to shuttle placing, and

Fig. 9 is a diagram of the electric circuitfor the picking motor.

Referring particularly to Fig. 1, the loom-frame Ill supports a lay E l havingla'y swords l2 movable;

aboutthe lay axis l3. Connectors M are between the lay and the top or crank" shaft l5 driven by a motor M on the loom frame and having apinion l6 meshing with a gear ll onthe shaft; A top 'gear l8 meshing with a bottom gear ii! on the two pick shaft 20, gear l9 being twice the size of'gear !8. Shipping and driving connections-may be used .to start and stop the loom, including some .well known form of clutch not shown As shown in Fig. 2 the lay has a shuttle box B formed with a box front 2! having a smooth rear wall 22 substantially parallel to thereed R. The usual "picker and stop for theshuttle .S are omitted, but

otherwise the matter alreadydescribed is of common construction. g In carrying my invention into effect I secure 'a bracket 30 on the lay-sword and secure thereonamotor 3! withitsaXis vertical} The motor shaftsz may be connected'to an upright shaft fit-by a sleeve-Mfastened to both shafts. The top of shaft 33 rotates in a bearing 35 secured to the back ofthe lay and has keyed or othergenerally at P. y

The pressure mechanism comprises a lever 45 pivoted around studltfi on lay carried stand 4.1. A forwardly extending finger 48 on the lever has pivoted to it a floating lever 49 as at 50, and each end of the levertQ carries a grooved ro1l5l. The latter are pressed against the belt by a spring 52 on a rod 53 passing through the lever 45 and anchored to the lay. A nut 54 holds the spring compressed and, affords .means for varying the;

pressure of the spring. By reason of the rolls the belt is urged forwardly against the shuttle S, andv the latter in turn is held against the box front 2 I Since the belt is in shuttle engaging position at all times, the motor for it must be at rest part of the time'and in motion at other times. Furthermore, the motor is reversed to place the shut tle and run: forwardly to pick. The control for these various operations are effected as shown herein by a cam moving in timed relation with the bottom shaft 20.

As shown in Figs. 1, 5 and 6 a cam 60 is securedf to shaft 20 and has a low shuttle placing motor reversing dwell 6!, a high shuttle picking dwell 62 to drive the motor forwardly, and an inter-,

, mediate short stop dwell 63 lying between the other two dwells. There is-also a long intermediate stop dwell 64 corresponding to the time the shuttle is on the other side of the loom. A

,cam lever 65 pivotedat 66 to a fixed stand 6! has a' roll 58 held against the cam by a spring 'A motor switch ID has an arm H on a'switch shaft 12 andconnecte'd by a' link 13 to the lever 65. The cam turns constantly in the direction of arrow at, Figs. 1, 5 and 6, and moves the lever '65 and therefor'e'the switch arm and shaft to three difierent positions. jWhen the shuttle approaching the shuttle box long dwell 64 is holding the switch inneutral or stopping position and the picking motor is V at rest; Theflight of theshuttle is sotimed .With the' loom parts that as the roll reaches the end of the long dwell 64 the shuttle will be just entering the shuttle box, assuming some such position as shown in full lines, Fig. 8. As the the shuttle is ordinarily at rest so-far as move-,

ment lengthwise of the shuttle is concerned and to meet this condition the short intermediate dwell 63 arrives under the roll, moving switch arm H back to upright neutral position, see full lines 7 Fig. 5. J

As the lay approachesthe middle position on its backward stroke, the normal times for picking,

high dwell 62 comes under rollEB and throws the switch arm H to the right or dottedline position of Fig. 5. This closes the circuit on the motor 3 l to drive it "in a forward'direction, moving the shuttle from the full line top center position of Fig. 7 to the dotted position and along the lay to the oppositeside. H During both the boxing and picking of the shuttle the rolls will assumethe position indicated in'full lines in Fig; 8, causingthe beltgtoconform to the rounded end of the shuttle. When the belt moves to place' or pick the shuttle the latter slides along thebox front 2| which is smooth enough to offer a minimum of resistance to shuttle motion. l

The electrical connections for the motor, which may be of the three phase alternating current induction type, are shown in Fig. 9. The'power Wires-85, '86 and 81 are connected to posts 88, 89

and 90, respectively, of switch 18, and post/s9 I, 92

and 93 of the switch are connected by wires 94 and 95, and 96, respectively,.to the windings 91, 98 and 99, respectively, of the motor. Crossovers I00 and ml permit reversal of the connections between wires and 86, and the posts 9! and 92, while wire 81 is arranged to connect straight through to .wire 96 when the switch is thrown either direct or reverse.

The relation of the switch to the motor control will be apparent, it is believed, from'the drawings. When the arm ll is to the right, as dotted in Fig.

" 5,'current flows throughwires 85, 86 and 8? to wires 94, and 96, respectively, with results already described. Whenthe switch is reversed, however; wires 85; 86' and 81 are connected to wires 95', 94 and 96, respectively, a condition existing when the arm TI is in theposition shown dotted in Fig. 6. When the arm H is in neutral or mid-position the switch is open and the power wires are disconnected from themotor. While .a specific type of motor has been shown, yetI do not wish to beli'rnited to such a motor, nor the type of reversing switch shown.

From the foregoing, it will be seen thatI have provideda loom wherein the shuttle is picked by a silent friction element normally placed to engage] the shuttle and actuated at the proper time topropel the shuttle. In this way a contact of large area is provided and the" shuttle can start to move, with its actuator instead of being struck by amoving part haV-inga high rate of speed; The shuttle is therefore subjected to a force acting uniformly along its length and there is no tendency for the-actuator to wear grooves or depressions in the shuttle wall. It will also be seen that the pickingmotor is reversibleto place the shuttle preparatory to picking. Furthermore, the belt engages a large area of the shuttle and'has a portion thereof deformable to follow the outline of the shuttle to insure maximunrsurface contact both for the placing and picking operations.

Having thus describedmyinvention it will be seen that changes and modifications may be made therein by those skilled in. the art without departingjfrom the spiritand'scope of the invention and I do not wish to. be limited to the details herein disclosed, but what I claim is:

' 1''. In a loom having al'ay, a shuttle box on the lay, a shuttle actuator extending along the lay .and forming part of the shuttle boxand' positioned at all times to engage the shuttle frictionally when the latter is in'the box, an electric motor operatively connected to the actuator and idle during a part of the cycle of loom operations,

andmeans to excite the motor to cause the actuator to pick the shuttle out of the box by frictional 'forcewhen the picking point is reached in the cycle of the'lo-o'm.

-2. In a loom having a lay, a shuttle box carried by the layj'a belt movable along the lay and forming one side f ofthe shuttle box and positioned at all'times to engage frictionally ashuttle in the box, an electric mot'or operatively connected to the'beltand idle during a part of the cycle of loom 'operations', anda controller for the motor operating in timed'relation with the loom to excite 'the'motor and cause the belt to move in a direction to pick the shuttle out of the box by a frictionalforce when the loom reaches the picking point in its cycle of operations.

3. In a'loom having a lay, a shuttle box thereon, a shuttle actuator located on one sideof the box positionedaatall .times for frictional engage- .ment with a shuttle entering or leavingthe box,

llo

drive mean sfor the actuator at rest'during a part ofthe cycle of loom operations, and means operative when the loom reaches the picking point in its cycle-of operations to set'the drive means in motionto give the-actuator a movement to pick the shuttle out of the box by a force transmitted frictionally. I

I 4. In a 100m having a lay, a-shuttlebox onthe lay, a belt to engage a shuttle frictionally extending" along and forming one side of thef'shuttle box, apair of spaced pulleys around which the belt is trained, an electric motor operatively connected to one of the pulleys and idle during a part of thecycle of loom operations, and control means effective when the' loom reaches the picking'point" in its cycle of operations to set the motor in motion to give said belt a movement in a direction'to pick the shuttle out of the box by a force transmitted frictionally'.

In a loom having a lay, a'shuttle box on the lay, a belt forming part of and extending along the shuttle box and positioned at all times to engagefrictionally a shuttle enteringor leaving the shuttle box, a 'pair of spaced pulleysrotatably mounted onthe lay'and around which the belt is trained, an electric motor operativelyrelated to one of thepulleys and idle during a part of the cycle of 100111 operations, a control switch for the motor, andmeans operativefwhen the loom reaches the picking point in its cycle of op- 'erations to move the switch in a direction to cause the motor'to move the belt in a direction to pickthe shuttle out of the shuttle box.

6. In a loom having a lay, a shuttle box, a belt forming part of the shuttle box at rest during a part of the cycle .of loom operations and positioned at all times to engage frictionally a shuttle entering or leaving the box, and means operative when the loom, reaches the picking point in its cycle of operations to set said belt into motion and'move the same in a direction to pick the shuttle out of the shuttle box by frictional contacttherewith. v V '3 In a, loom operating with a shutt1e,1a Shut-'3 tle box to receive a shuttle, a belt extending along and forming part of the shuttle box and posi 'tioned atv all times to engage frictionally a shuttle when the'l'atter is in the shuttle box, and intermittently actuated means operatively connected to the belt to give the latter periodic movements in a direction along the shuttle box and in frictional contact with the shuttle to pick the latter out of the box.

8. In a loom operating with a shuttle having a rounded nose, a shuttle box to receive a shuttle, a belt extending along and formingpart of the shuttle box and positioned at all times tov engage frictionally a shuttle in the shuttle box, intermittently actuated means operatively connected to the belt to give'the latter, periodic movements in a direction along the shuttle box and in frictional contact with the shuttle to pick the latter out of the box, and means pressed against the belt to cause the same to conform to'an'd liein frictional contact with the rounded nose of the shuttle.

-9. In a loom having a: shuttle box, a belt extending along and forming part of'the shuttle box and positioned at alltimes for engagement with a'shu ttle in the shuttle box, a pair of spaced rolls to engage the belt, at spaced points and move the same inwardly with respect to the shuttle box towards'a shuttle in the box, and a. floating yielding mounting for saidrolls causing the latter trio motor mounted on to require the belt to conform to the outline of the shuttle in the box. I

10. In-a 100m having a shuttle box, a belt extending along and forming part of the shuttle box and positioned at all times to have frictional engagement with a shuttle in the shuttlebox, means to move the belt periodically and while in frictional' contact with the shuttle to pick the latter out of the box, and means to cause the belt to conform to the shape of the shuttlefas the latter moves along the shuttle box.

' llaln a loom having a shuttle box, a belt excycle of operations and to cause? said motor to move the belt topick the'shuttle-out of the box when the loom reachesjthe' picking point in its cycle of operations,

"12. In a loom having a' lay movable about an axis, a shuttle box on the lay, a shuttle actuator forming one side of the shuttle box and po-sie tioncd at all "times to engage :frictionallya shuttle in the box, an electric motor mounted on and movable about the axisofthe lay an'd operatively connected to'the actuator and idle during apart of the cycle of loom operations, and means operative when the loom'reaches the picking point in its cycle of operations to set said motor in operation to give the actuator a movement in a direction to pick the shuttle out of the box by frictional contact therewith;

13; Ina loom having a' lay movable about an axis, a shuttle box thereon, a belt mounted on the lay and forming part of the shuttle box, an'electhe layered operatively connected to the belt, said motor and belt being 'atr est during a part of the, cycle of loom opera- 7 tions and the'belt positioned at all times for engagement for frictional engagement with a shuttle" in the box, areversingsw'itch for the motor to cause the same to move in opposite directions, and a controller for the motor operating in timed relation with the loom and operative to reverse the motor to cause the belt'to move a shuttle int-o the box by frictional contact therewith when the lay reaches the shuttleboxing point in its cycle of operations to place the shuttle for proper subsequent picking and thereafter operative to move the motor and belt to pick the shuttle out, of the box by frictional contact between the shuttle and belt when the lay reaches the picking point in its cycle of operations.

14. In a loom having a shuttle box, a friction belt extending along and forming part of the shuttle box and at rest during a part offthe oycle of loom operations and positionedto engage a shuttle in the box, and means first togive said belt a reverse movement to draw a shuttle into the box by frictional contact with the shuttle to establish maximum contact of area between 1 the belt and the shuttle, and operative thereafter 1 to'give the belt a-direct motion in a direction to drive the shuttle out of the box by frictional contact therewith.

15. In a loom having a lay movable about an axis, a motor normally at rest mounted on and movable about the axis of the lay, ashuttle moving elementoperatively connected to the motor and positioned at all times to have frictional contact with a boxed shuttle, a reversing switch for the motor, a cam having high, low and inter-- mediate dwells, meansto operatively connect the switch and cam to hold the switch open by the intermediatedwell, close the switch in one condition by the low dwell and close the switch in a different condition by the high dwell, the

switch when in one condition causing the motor to move the belt in a direction to box the shuttle and when in the other condition causing themotor to move the belt in a direction to pick the shuttle out of the box. 7 a

16. In a loom having a lay movable about an axis and having a shuttle box-on the lay, a beltextendin along and forming part of the shuttle box and positioned at all times for frictional en'- gagement with a shuttle in the box, a motor operatively connected to the belt and idle during a part of the cycle of loom operations, a'reversible switch for the motor, a cam to'control the switch having high and low dwellsspaced by an intermediate dwell, means to operatively conmeet the cam and the switch so that the low dwell will cause. one closed. condition for the cause the motor to drive the belt in the opposite direction to pick the shuttle out of-the box by frictional contact therewith.

17. In a loom having alay and a shuttle box thereon, a shuttle actuator lying on one side ofthe shuttle box and at rest during apart of the cycle of loom operations and positioned to em gage a shuttle in the shuttle box at allltimes, andmeans to set said belt in motion to pick the shuttle out of the box by a force transmitted frictionally from the belt'to the shuttle.

18. In a loom having'a lay and operating with a shuttle, a shuttle box on the lay, an elongated friction element extending along the lay adjacent the shuttle box andlocated to have contact with a shuttle in the box at points lying along the lay and on both sides of the longitudinal center of the shuttle, and means to move the element along the lay to pick the shuttle out of the box by a force transmitted frictionally from the element to the shuttle,-that. part of the element having contact with the rear part of the shuttle having reference to the direction in which the shuttle ispicked resisting movement of the shuttle transversely of the direction of picking. V

19. a picking motion for a loom having a lay and operating with a shuttle, a shuttle-box on the lay, a pair of spaced rotatable actuators located at different points-longitudinally along the lay and adjacent the shuttle box, a friction belt engaging and movable by the actuators and positioned to have contact with a shuttle in the box at points which lie on both sides of the longitudinal center of the shuttle when the shuttle is at restin the box, and means to move the actuators to pick .the shuttle out of the box by a force transmitted frictionally'by th'e'belt tothe shuttle, that part of the belt having contact with V the rear part of the shuttle having reference to the direction in which the shuttle is picked resisting movement of the shuttle transversely of the directionof picking. j'

20. In a picking motion'for 'a loom operating with a lay and a shuttle, a shuttle box on one end of: the lay, a belt extending along the lay adjacent the shuttle box and positioned for frictionalcontact with a shuttle in the box, said belt having contact with the shuttle along portions of the latter which are behind and in front of the longitudinal center of the shuttle having respect to the direction of travel of the shuttle, and means operative to'inove the belt and cause the latter to ,pick the shuttle out of theshuttle box by a force transmitted frictionally from the belt to the shuttle, that part of the belt having contact with the rear part of the shuttle having reference to the direction in which the shuttle is picked resistin-gmovement of the shuttle transversely of the .direction of picking.

OSCAR V. PAYNE.

Images