US2033002A

US2033002A - Reversible side slipping weft detector

Info

Publication number: US2033002A
Application number: US18089A
Authority: US
Inventors: Oscar V Payne
Original assignee: Crompton and Knowles Corp
Current assignee: Crompton and Knowles Corp
Priority date: 1935-04-25
Filing date: 1935-04-25
Publication date: 1936-03-03
Anticipated expiration: 1953-03-03

Description

mh 3, 1936. o. v. PAYNE 2, 0

REVERSIBLE SIDE SLIPPING WEFT DETECTOR Filed April '25, 1955 2 Sheets-Sheet l Attorneysarch 3, 1936. Q v. PAYNE 2,033,002

REVERSIBLE SIDE SLIPPING WEIFT DETECTOR Filed April '25, 1955 2 Sheets-Sheet 2 FIE 5 Inventor Dacar V. Payne m Attorneys Patented Mar. 3, 1936 UNETED STATES PATENT oFFIeE REVERSIBLE SIDE SLIPPING WEFT DETECTOR Application April 25,

11 Claims.

This invention relates to improvements in side slipping weft detectors for looms and mountings thereof and it is the general object of the invention to provide a detector and mounting which will permit use when right side up or inverted.

Because of the economy of arrangement in a weave shed it is customary to build looms right and left hand. When such looms are controlled as to certain of their operations by weft detector mechanisms the latter are mounted on one side of a right hand loom and on the opposite side of a left hand loom. It is an important object of my present invention to provide a weft detector so constructed that it will operate satisfactorily at either side of the loom, the detector working right side up on one hand of the loom and being inverted on the opposite hand of the loom.

Such detectors are customarily mounted on a support which is carried by some part of the loom frame, such for instance as the breast beam, and it is a further object of my present invention to form the support in such a way that it can be used right side up to position the detector correctly with respect to the feeler slot on one side of the loom and inverted to present the feeler finger correctly for the feeler slot on the other side of an opposite hand loom.

In my co-pending application Serial No. 727,302 I have shown a side slipping electrically indicating weft detector so constructed that upon detecting non-indicating beats of the loom the actuator for the electric switch moves away from the latter to prevent accidental indication. The detector shown in that application is positioned by a single spring which serves to return the detector finger and its supporting lever to normal position after a side slipping indicating movement. It is a further object of my present invention to construct the feeler finger and its supporting lever in such a way that the finger is supported equally well whether the detector as a whole be right side up or inverted. This result I may accomplish by making the supporting lever of two similar parts which are spaced to receive between them the detector finger, although I do not wish to be limited to this particular means for accomplishing the result specified.

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,

1935, Serial No. 18,089

Fig. 1 is a perspective view of my improved weft detector and. mounting therefor shown applied tothe right end of a right hand loom,

Fig. 2 is a View similar to- Fig. 1 but with the detector and its mounting in inverted position and applied to the left end of a left hand loom,

Fig. 3 is a diagrammatic rear elevation of my improved detector and mounting therefor showing the same as used right side up and inverted,

Fig. 4 is a perspective view of the detector with the cover removed,

Fig. 5 is a plan view of the detector finger and. supporting lever therefor, and

Fig. 6 is a vertical section on line 66, Fig. 5, looking in the direction of the arrows.

Referring to Fig. 1, I have shown a loom frame Ill having a breast beam H behind which reciprocates the lay l2. A shuttle box B is mounted on the right end of the lay as shown in Fig. 1 and has a box front [3 provided with a feeler slot l4 which may align with a corresponding slot not shown in shuttle S when the latter is in the box. The matter shown in Fig. 1 is that to be found on a so-oalled right hand loom.

In Fig. 2 I show portions of a similar loom but of opposite hand, the loom frame 20 having a breast beam- 2| and a lay 22 having a. box front 23 provided with a horizontal slot 24 similar to slot I4. The structure shown in Fig. 2 represents the detector end of a so-called left hand loom. The parts thus far described may be of common construction in looms and of itself forms no part of my present invention.

The weft detector proper comprises a housing H having a base 30 formed with a vertical wall 3| which extends upwardly from a floor 32. A boss 33 rises from the floor and supports two normally spaced insulated spring electric contacts 34 and 35, respectively. A wire 36 may be connected electrically with the spring contact 34 while the other contact may be grounded. It is sufficient to state for the purposes of the present description that engagement of the'two spring contacts 34 and will bring about a change in loom operation,such for instance, as weft replenishment or loom stoppage.

The floor has upstanding therefrom a bearing boss 40 having therein a vertical bushed bearing 4| which receives a stud or journal 42 rotatable therein. Lubrication of the journal is provided by means of a wick 43 located in a bore 44 of the lug or boss 40. I j

The stud 42 has secured thereto a pair of similar spaced levers forming top and

bottom plates

45 and 46, respectively, which are separated by collar 41. Each plate has a short finger 48 which is positioned for engagement with the spring contact 35 when the detector indicates exhaustion of weft but which is normally ineffective to close the switch at any other time.

Each plate has a laterally extending arm 49 and both of the arms support a pivot screw 50 around which the detector finger 5| swings. The detector may preferably be made of wire and has a bearing plate 52 secured thereto which exr.

tends between the

plates

45 and 46 and has pivotal connection with the screw or stud 58. The

wire 5| extends as shown in Fig. 4 to the right from the screw 50 and has a bend 53 to cooperate with a fixed guide pin 54 supported by the shell. From the shell the wire extends rearwardly as at 55 and may have an enlarged detector tip 56 secured thereto. spring 51 is interposed between the detector finger and the arms 49, being held in place by

guides

58 and 59 carried by the bearing 52 and the arms 49, respectively. The

plates

45 and 46 have a reduced rearwardly projecting extension 68 which supports a pin 6| passing between them to limit rearward movement of the detector finger under action of the spring and also hold the

plates

45 and 46 properly spaced so that the wire 5! may slide between said plates without undue resistance. The guide 59 may also serve to space the lever plates.

The shell 3| has supporting lugs 65 which are at substantially the same height as the boss 33 and the top of pin 54, and there is upstanding preferably from the lug 40 a threaded shoulder 66 which is also the same height as the lug 65. A cover 61 rests on the lug 33, pin 54, lugs 65 and shoulder 66 and is held by a screw 68 fastened into the shoulder.

The head of the stud 42 is preferably broadened as at 10 and is substantially the same height as the shoulder 66 so as to lie closely under the .cover 61 when the feeler is used right side up,

and derive support from said cover when the feeler is inverted. The detector shell has a central tapped bore 12 extending downwardly through the lug 48 and floor 32 to receive a supporting screw 13.

In order to hold the detector for cooperation with a shuttle to be detected I provide a support 15 having slot 16 to receive a supporting screw H. A rod 80 extends through a hub 8| at the rear of support 15 and is held in adjusted longitudinal position by a screw 82. The rod is offset as at 83 and has an outer portion 84 substantially parallel to the part received by hub 8|. A small holder 85 is held in longitudinally adjusted position on the end 84 by a set screw 86.

As shown in Fig. 3 the axis of that part of the wire 86 in hub 8| may be in vertical alignment with the wire 5| of the detector finger and when the detector is used on a right hand loom the end 84 will be down so that the holder 85 and the detector carried thereby will be above the end 84. When the parts are assembled on a left hand loom as shown in Fig. 2, however, the part 84 will be above the detector and the holder 85 will hang down from the rod. In both instances, however, the center of the detector tip will be in more or less vertical alignment with the main axis of the rod 80 so that whether the detector be used right side up or inverted it 'will' align itself correctly ;with the detector slots in the box fronts. This relation will be understood fromFig. 3, where the dot A light compression' and dash line (1 passing through the centers of the detector tips also passes through the main axis of the rod.

From the foregoing it will be seen that I have provided a simple weft detector and mounting which can be used right side up on a right hand loom as shown in Fig. l, or in inverted position at the left hand side of a left hand loom, the mounting for the detector being such that in either position the feeler tip will be correctly positioned for cooperation with a surface to be detected. When the detector is used right side up the detector finger derives its support intermediate the ends thereof from the bottom plate 46, butwhen in inverted position the finger is supported by the plate 45 and the carrier lever L which is made up principally of the two plates is supported by the broadened head 10 resting on the cover of the detector. While I have shown the reversible feature of the mounting as depending upon the offset 83 in the rod 80,yet I do not wish to be thus limited.

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 an invertible weft detector for looms, a support, means to hold the support either erect or inverted, a carrier lever pivoted to the support, means operated by the lever whether the support and lever be erect or inverted to give indication of weft exhaustion when the lever moves in a given direction, and a detector finger pivoted to the lever and movable when detecting an exhausted supply of weft to move the carrier lever in said given direction, the lever and finger so constructed that the lever extends above and below the detector finger and supports the finger when the support is either erect or inverted.

2.'In an invertible weft detector for looms, a support, means to hold the support either erect or inverted, a carrier lever pivoted to the support, means to give indication of weft exhaustion when the lever moves in a given direction, a de- -tector finger having a rear weft engaging end,

and a pivotal connection between the lever and finger, the lever constructed to support the finger at a point between the pivotal connection and the rear end thereof whether the support'be erect or inverted.

3. In an invertible weft detector for looms, a support, means to mount the support either erect or inverted, a carrier lever formed of two spaced plates secured together and pivoted to the support, means to indicate exhaustion of weft when the lever swings in a given direction, and a detector finger pivoted to the lever and movable between the plates when detecting an exhausted supply of weft to swing the lever in said given direction, the detector finger being supported by one of the plates whether the support be erect or inverted.

' 4. In an invertible weft detector for looms having a surface to be detected, a detector finger having a rear tip to engage the surface to be detected, a support, a carrier lever for the detector pivoted to the support and having two plates fastened together, one above and the other below the finger, to support the latter when the support is either erect or inverted, and a mounting for the support to position the tip to engage the surface when the support is in either position.

5. In an invertible weft detector for either end of a loom, a side slipping detector finger to move at indication of weft exhaustion in the same direction laterally relatively to the center of the loom when the detector is at either end of the loom, means to support the detector erect at one end of the loom and inverted at the other end, said means constructed to hold the detector finger at the same elevation at each end of the loom, and a pivotally mounted carrier for the finger, the finger and carrier so formed that the latter supports the finger whether the detector be erect or inverted.

6. In an invertible side slipping weft detector having a support, a carrier lever pivoted to the support and comprising upper and lower portions, a detector finger pivoted to the lever and having a part thereof extending between the upper and lower portions, whereby the latter supports the detector finger whether the detector be erect or inverted, and means carried by the detector and rendered eiTective in either position of the detector to efiect indication of weft exhaustion when the finger slips laterally to move the lever.

7. In an invertible electrically indicating side slipping weft detector, a housing, means to support the housing either erect or inverted, an electric switch carried by said housing, a carrier lever pivoted to the housing and having upper and lower portions, a detector finger pivoted to the lever and having a part extending between upper and lower portions to be supported by the latter whether the detector be erect or inverted, and means carried by the lever to operate the switch when the detector finger moves laterally to give indication of weft exhaustion regardless of the position of the housing.

8. In an invertible electrically indicating side slipping weft detector, a housing comprising a base and a cover, an electric switch carried by the housing, a carrier lever to close the switch and having upper and lower portions, a detector finger pivoted to the lever and having a part extending between said portions to be supported by the latter whether the housing be erect or inverted, and a pivotal support for the detector deriving its support from the base when the housing is erect and deriving its support from the cover when the housing is inverted.

9. In an invertible electric side slipping weft detector, a housing comprising a base and a cover, an electric switch in the housing, a carrier lever to operate the switch, a detector finger pivoted to the lever, said lever and finger constructed so that the lever supports the finger whether the housing be erect or inverted, and a pivotal support for the lever carried by the housing and supported by the base when the detector is erect and supported by the cover when the detector is inverted.

10. In a side slipping weft detector to be used at either end of a loom, a housing, a detector finger projecting from the housing slidable laterally in a horizontal plane to indicate weft exhaustion, means within the housing to support the detector finger whether the housing be erect or inverted, and supporting means for the housing to be mounted on either end of the loom to hold the housing either erect or inverted with the detector finger at the same elevation for either position of the housing, said means including a member having two parts at difierent levels which can be inverted when the housing is inverted.

11. In a side slipping weft detector to be used at either end of a loom, a housing, a detector finger projecting from the housing slidable laterally in a horizontal plane to indicate weft exhaustion, means within the housing to support the detector finger whether the housing be erect or inverted, an invertible support means for the housing, said invertible means including a rod having offset portions one of which is supported by the loom and the other of which supports the housing, the rod to assume different positions to locate the detector finger at the same elevation whether the housing and support be erect or inverted.

OSCAR V. PAYNE.