US2062702A - Shuttle binder control for looms - Google Patents

Description

Dec. 1, 1936. Q wm SHUTTLE BINDER CONTROL FOR LOOMS Filed Jafi. 15, 1936 2 Sheets-Sheet l INVENTOR. Ufifovd Davwm BY l ATTORNEY I l, 1936. c, DARWIN 2,062,702

SHUTTLE BINDER CONTROL FOR LOOMS Filed Jan. 15, 1936 2 Sheets-Sheet 2 Egg.

g fi/M/zfor Patented Dec. 1, 1936 UNITED STATES PATENT OFFICE Clifford Darwin, Worcester, Mass, assignor to Crompton & Knowles Loom Works, Worcester, Mass, a corporation of Massachusetts Application January .15, 1936, Serial No. 59,253

10 Claims.

This invention relates toimprovements in means for checking a shuttle as it is boxed and thereafter relieving pressure at the time of picking and it is the general object of the invention to accomplish these results with a minimum weight of parts and disturbance of cooperating connections between the binder and the control thereof.

In United States Patent Number 2,025,906 there is shown a gang of shuttle boxes each having a binder which when in picking or boxing position is acted upon by a protector finger at the inner end and a spring at the outer end, both of these parts tending to hold the binder in shuttle checking position. A disabling arm movable about an axis carried by the lay is in line with the binder in picking position, the boxes shifting so that each binder may assume this relation. The arm as shown in that application is fastened to a shaft moving in bearings carried by the lay and a second arm secured to the shaft cooperates with the lay connector driven by the crank shaft, both arms and shaft moving as a unit to relieve binder pressure at picking and to permit increased pressure when the shuttle is boxing. The fact that both arms are connected together results in a vibration of them by the boxing shuttle, causing unevenness of pressure on the binder.

It is an important object of my present invention to break the connection between the disabling arm and the lay connector so that the former is the only part of the train of mechanism which must be moved when the shuttle is boxed, thereby reducing binder pressure variation to a minimum. Breakage due to the vibration has also been reduced or entirely eliminated due to the fact that the lay connector engaging arm remains at rest relatively to the connector when the shuttle is boxing.

It is a further object of my present invention to interpose between the disabling lever for the binder and the lay connector a separate form of force transmitting mechanism which permits the connector arm to rest at all times on the connector, thereby avoiding shock and eliminating breakage.

I have found it convenient to mount the disabling arm loosely on the lay carried shaft and secure to the latter a second arm to transmit pressure to the disabling arm through an adjustable element, such as a pressure screw in one of the arms. I

With these and other objects in view which will appear as the description proceeds, my invention resides in the combination and arrangement of parts hereinafter described and set forth in the claims.

In the accompanying drawings, wherein a convenient embodiment of my invention is set forth,

Fig. 1 is a front elevation of a lay and multi- 5 cell shuttle box having my invention applied thereto,

Fig. 2 is a plan view of the structure shown in Fig. 1,

Fig. 3 is an end view of the structure shown in Fig. 1 looking in the chrection of arrow 3, Fig. 1, the lay being omitted and the lay end together with the shuttle boxes and their binders being shown in section,

Fig. 4 is a perspective view of one of the binders,

Fig. 5 is a perspective view of the upper end of the disabling arm, and

Fig. 6 is a diagrammatic view showing the relation between the shuttle and the binder when the shuttle is partly boxed.

Referring to the drawings, the loom frame It] supports the customary lay L on which are mounted for vertical sliding a gang of shuttle boxes B having guide ribs H to cooperate with grooved guides I! supported by the lay end l3." The gang of boxes which are supported by a box lifter rod 14 controlled in usual manner by any approved box motion not shown are shown as formed with four vertically aligned cells l5, l6, l1 and I8, respectively, each of which is movable into alignment with the shuttle race l9 for pickmg.

Each end of the lay has pivoted thereto as at the forward end of a driving connector 26 having spaced parallel rods 21 which extend rearwardly to a cross head 28 moved by the Wrist pin 29 on top of crank shaft 30 of the loom and slidable on the rods against the action of heavy compression springs 3| interposed between the cross head and nuts 33 at the forward ends of the springs. Nuts 32 behind the cross head limit expansion of the springs and the latter yield should a shuttle be caught in the shed. The connector itself may be the same as that set forth in patent to I-Iillman No. 1,323,391. In addition, each rod 21 has a block 34 threaded thereon and held in place by check nuts for a purpose to be set forth.

A protector rod 40 is mounted in usual manner on the lay and carries a protector finger 4| adapted for engagement with the binder 42 of the active cell box. The rod has a dagger 44 and is surrounded by a compression spring 45 which acts in a direction to move the finger against the binders and hold the dagger raised. The protection is of the usual construction, a shuttle entering the active box being operative through the associated binder to rock the protector finger l! forwardly and thereby lower the dagger so thatit will clear the knock-off mechanism not shown. When the shuttle fails to be boxed the spring 45 acts to hold the dagger elevated and as the lay advances the knock-off mechanism stops the loom.

In carryin my invention into effect I provide a rocker shaft 53 mounted for oscillation in outer and inner bearings 5i and 52, respectively, carried by the lay. A rearwardly extending lifter arm 53 is adjustably secured to the rod 50 by screws E i and has a finger 55 which extends between the rods 21, preferably lying over the lower block 34 and being urged to move toward said block by a tension spring 56 the upper end of which is held in adjusted position along the lifter arm and the lower end of which is fixed.

A force arm 68 has a hub 59 held in adjusted longitudinal and angular position on shaft 50 by set screws 6!. This force arm extends upwardly and may be curved laterally to the left as shown in Fig. 1 to align with an adjustable thrust screw 65 carried by a disabling arm 66. The latter has a hub 51 loose on shaft 59 and confined between bearing 5| and. hub 59. An offset 68 in the disabling arm provides a support for the screw 65, while the upper end of said arm 66 may have a head 69 formed substantially as shown in Fig. 5 with upper and lower inclined surfaces H3 and H, respectively. Similar rear upper and lower inclined surfaces 12 and I3 are also formed on head 69.

The outer end of each binder is formed as shown in Fig. 4 with a bracket 15 having a tongue 16 and formed with spaced walls 14 to define a guide slot ii for the reception of a guide pin 18 carried by and common to all cells of the gang of shuttle boxes. A pressure finger 16 forms part of the bracket and is spaced from the binder proper, lying in front of the head 69 of the disabling lever 66. The inclines 10, ll, 12 and 13 on the head 68 of the disabling lever permit the binders and the pressure fingers to slide along the head as the boxes shift.

Each tongue it receives the rearward thrust of a screw 88 adjustably held by nuts 8! in a spring 82 having a coiled loop 83 and having the inner end thereof secured as at 84 to the shuttle box structure. Each spring 82 is so formed as to tend normally to urge the corresponding tongue 76, and therefore the outer end of associated binder, rearwardly by a force transmitted through the screw 8%], thereby normally holding the binder yieldingly in the box, where it can check the shuttle as the latter enters.

During loom operation the shaft 39 rotates in a clockwise direction as viewed in Fig. 3 the effect of -which is to place the connector 26 in low position as shown in said figure, when the lay is near so-called bottom center at which time the shuttle S is ordinarily boxed. As the shuttle enters the box it will strike the inclined end of the binder and move the inner end of the latter outwardly from the box to rock the protector finger 4i forwardly and depress the dagger 44 against the action of spring 45. The latter is weaker than the spring 82, as described in the aforesaid United States Patent Number 2,025,906, to give assurance that the detecting mechanism will operate early during shuttle boxing. As the shuttle continues to enter the box the outer end of the binder, shown at the left of Fig. 2, will be moved forwardly against the action of its spring 82.

It should be noted in connection with Fig. 3 that during the boxing of the shuttle the lifter arm 53 is down since the block 34 on which the finger 54 rests is low, and therefore the force arm 66 is in rear position, or toward the boxes, to relieve pressure on the screw 65. This relief is insured by the weight of arm 53 and spring 56, either being sufficient for the purpose. Arm 68 may be in contact with said screw or spaced therefrom, according to the setting of the screw desired by the operator.

An important feature of my present invention is that the arms 53 and 5?! are not operatively connected to the binder of the active shuttle being boxed and therefore the binder may operate in its usual manner, the disabling arm 66 being free on shaft 553 and offering no appreciable resistance to the action of the associated spring 32. The shuttle will therefore be boxed against the full undisturbed and uniform resistance of springs 35 and 82.

As shaft 39 continues to rotate and the lay moves rearwardly to picking position the lower block 34 will rise to its high position, thereby rocking arms 53 and Gil in a counter-clockwise direction as viewed in Fig. 3, the effect of which is to move the force. arm against the pressure screw 65 to give the disabling arm 66 also a counterclockwise movement forwardly with respect to the boxes. Since the head ofthe disabling at this time lies behind the tongue l] of the active shuttle box the binder will be moved forwardly against the action of the corresponding spring 82, the bracket it by reason of the slot Ti sliding forwardly relatively to the guide pin 78 to relieve pressure between the binder and shuttle. The extent of this relief can be regulated as desired, the pressure being entirely romoved, or held to a very light amount. What ever the degree of the pressure it will be considerably less than that existing when the shuttle is boxed.

When the lay is advancing toward front position, and after it starts rearwardly a short distance the gang of shuttle boxes will shift, and as each binder slides along the head es of the disabling lever the latter will oscillate about shaft 59, especially if certain box cells are empty and others occupied by shuttles. Since the disabling arm is separate from the lifter arm, how-- ever, the latter will not share the motions of the former during box shifting, and the striking of the lifter arm against the lay connector, a coudition existing in former constructions, is absent.

Except for the separation of the disabling arm from those parts which are rocked by the rising and falling movements of the lay connector the parts may operate substantially as described in the aforesaid application. As the lay continues to move rearwardly the connector will again fall, the spring holding the finger be down on the lower block Stand the disabling arm moving rearwardly relatively to the lay and boxes to reestablish proper conditions for shuttle boxing. The vibration of lifter arm 53 present in former constructions at the time of shuttle boxing is avoided by the structure set forth herein, inasmuch as the disabling arm which shares the forward motion of the outer end of the binder moves independently of the arms 53 and t5 and shaft 55!.

From the foregoing it will'be seen that I have provided an improved form of binder control wherein the binder and disabling arm move independently of the lay connector actuated parts during shuttle boxing, thereby eliminating quick movements and vibration of the arm 53 relatively to the connector to prevent breakage of said arm.

It will further be seen that the checking pressureexerted on the incoming shuttle is regulated by the associated spring 82 without interference on the part of any variable force which might otherwise result from vibration of the arm 53 were the latter secured tightly to the disabling arm. Under these conditions, the checking force exerted on the incoming shuttle is smooth and continuous, thereby insuring proper boxing with a minimum likelihood of shuttle rebound. Also, the fact that the force arm is separate from the disabling arm permits the latter to oscillate during box shifting without disturbing the lifter arm, the latter resting on block 34 of the lower rod 2'! so that little or no jar or vibration exists between the block and arm 53.

(Io-pending application Serial No. 732,493 filed by Santon shows a pair of arms to control the outer end of a shuttle binder, but in that case the arms are connected by a relativelyheavy spring, the effect of which is to cause vibration of the lifter arm relatively to the lay connector as in the first application mentioned herein.

Having thus described my invention it will be seen that changes and modifications may be made therein by those skilled in the art without departing from the spirit and 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, a lay, shuttle boxes shiftable with respect to the lay to render any box active, a shuttle binder for each shuttle box, a lay connector which rises and falls during loom operation, an arm operatively related to the connector to rise and fall therewith, a disabling arm mounted for free pivotal movement with respect to the lay to be operatively related tomove positively with the binder of the shuttle box in active posi tion toward and from shuttle checking position, a force arm normally out of force transmitting relation with the disabling arm and movable with the first named arm, resilient means tending to move the disabling arm and binder in active position toward the active shuttle box, and means to establish connections between the force arm and disabling arm when the first named arm rises and efiective to move the disabling arm and active binder away from shuttle checking position against the action of the resilient means.

2. In a loom, a lay, a gang of shuttle boxes shiftable with respect to the lay to render any shuttle box active, a binder for each shuttle box, a lay connector which assumes high and low positions during loom operation, resilient means to urge each binder toward the corresponding shuttle box, two binder control members one of which is mounted for free pivotal motion with respect to the other and has operative relation with respect to the active binder to move positively therewith toward and from shuttle checking position, the other member being movable in a given direction by a force derived from the connector when the latter is in high position, the other member eifective to move the first member and binder away from shuttle checking position when said other member moves in said given direction, and means to move the members out of operative relationship when the connector is in low position.

3. In a loom, a lay, a gang of shuttle boxes shiftable with respect to the lay to render any shuttle box active, a binder for each shuttle box, a lay connector which assumes high and low positions during loom operation, resilient means to urge each binder toward the center of the corresponding shuttle box, a disabling arm movable positively with the binder of the active shuttle box and mounted for free pivotal movement, the boxes shifting with respect to the disabling arm so that the latter can have operative relation with the binder of any shuttle box when active, a force arm operatively connected to the lay connector and movable by the latter in a given direction when said lay connector is in high -'-position and eiiective to move the disabling arm and binder of the active shuttle outwardly from the active shuttle box against the resilient means corresponding to the latter by a force transmitted through the disabling arm, and means to move the force arm away from the disabling arm when thelay connector assumes low position. I

4. In a loom, a lay, a gang of shuttle boxes shiftable with respect to the lay to render any shuttle box active, a binder for each shuttle box, a lay connector which assumes high and low positions during picking and box shifting parts of the loom cycle, respectively, resilient means to urge each binder toward the center of the corresponding shuttle box, an element carried by each binder spaced from the body of the latter, a disabling lever mounted for free pivotal movement with respect to the lay and extending'between the binder in active position and the element therefor, the elements shiftable with the gang of boxes with respect to the disabling arm, and a force arm movable against the disabling arm by a force derived from the lay connector when the latter assumes high position to move said disabling arm against the element of the active binder to move the latter outwardly from the active shuttle box against the action of the resilient means oorrespending to the active shuttle box, and means to move the force arm away from the disabling arm when the lay connector assumes low position.

5. In a loom, a lay, a gang of shuttle boxes shiftable with respect shuttle box active, a binder for each shuttle box, a lay connector which assumes high position during the picking cycle and low position during the box shifting cycle, resilient means to urge each binder toward the center of the corresponding shuttle box, a disabling arm to move positively with the binder in active position toward and from the active shuttle box and subject to vibration when the boxes shift relatively to the lay, means separate from the disabling arm movable by the lay connector as the latter assumes high position against the disabling arm in a direction away from the active shuttle box, and means to move the means away from the disabling arm when the lay connector assumes low position to prevent the vibration of the disabling arm during the box shifting cycle from being communicated to the means and lay connector.

6; In a loom having a lay with a shuttle box to receive a shuttle, a binder forming part of the shuttle box to check the motion of the shuttle, resilient means tending to move the outer end of the binder toward the center of the shuttle box, a connector to drive the lay having rising and falling movements during loom operation, a shaft carried by the lay and extending substantially parallel to the direction of motion of the shuttle,

to the lay to render any means secured to the shaft to rock the latter by i a given direction, a force arm secured to the shaft and movable therewith, a disabling arm loosely pivoted to the shaft and operatively related to the binder, and means to operatively relate the arms when the shaft rocks in said given direction to cause the force arm to move the disabling arm in a direction to move the outer end of the binder away from the center of the shuttle box and against the action of said resilient means, the binder being movable by the shuttle when the latter is being boxed to move the disabling arm against the action of the resilient means.

'7. In a loom having a lay with a shuttle box to receive a shuttle, a binder forming part of the shuttle box to check the motion of the shuttle, a connector to drive the lay having rising and falling movements during the loom operation, an element to have abutting relation with and rise and fall with the connector continuously during loom operation, an arm fixed with respect to and movable with the element, a second arm movable relatively to the first arm and operatively related to the binder to move with the latter, resilient means to hold the binder and second arm in shuttle checking position, the arm which is fixed relatively to the element operative when the latter rises to move the binder away from checking position by a force transmitted through the second named arm, and the arms being out of cooperative relationship when the element is in low position to the end that the relationship between the element and connector is preserved without disturbance when the binder is moved by a shuttle entering the shuttle box.

8. In a loom having a lay with a shuttle box to receive a shuttle, a binder forming part of the shuttle box to check the motion of the shuttle, a connector to drive the lay having a low position when the shuttle is boxed and a high position when the shuttle is picked, an element to have engagement with the connector and assume high and low positions with said connector, an arm in fixed relation with respect to and moving with the element, a second arm movable relatively to the first arm to engage the binder and move with the latter, and means to establish an operative connection between the arms when the connector is in relatively high position only to cause the binder to move away from shuttle checking position by a force derived from the connector and transmitted through the element and arms, the arms being out of cooperative relation when the connector is in low position, whereby the engagement between the element and connector is preserved without disturbance when the shuttle is boxed.

9. In a loom operating with a shuttle, a lay, a shuttle box thereon, a shuttle binder, yielding means to hold the binder normally in shuttle checking position, a binder controller movable with the binder and capable of moving the binder away from shuttle checking position, a lay connector to be in low position when the shuttle is boxed and in high position when the shuttle is to be picked out of the box, an actuator for the controller separate therefrom, a force transmitter between the actuator and lay connector having a pressure contact with the connector and causing the actuator to move against the controller to move the binder away from shuttle checking position when the connector is in high position, the force transmitter moving with the connector when the latter is in low position to move the actuator away from the controller, whereby vibration of the latter incident to boxing of the shuttle is inefiective to disturb the pressure contact between the connector and force transmitter.

10. In a loom operating with a shuttle to be boxed and picked, a binder to be moved by the shuttle when boxing, a binder controller positively movable with the binder toward and from shuttle checking position, a lay connector to be in low position when the shuttle is boxed and in high position when the shuttle is picked, an actuator for the controller moving with the lay connector during the shuttle boxing and picking parts of the loom cycle, the lay connector when in high position moving the actuator into cooperative relation with the controller to move the latter away from shuttle checking position, and the actuator movable away from the controller when the lay connection is in low position, whereby the relation between the lay connector and actuator remains established without disturbance when the binder and controller move at the time of shuttle boxing.

CLIFFORD DARWIN.

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