US2439031A - Stop motion for pile wire looms - Google Patents

Description

April 6, 1948. s. s. WILSON STOP MOTION FOR PILE w IRE Locus 7 4 she ts-sheet 1- Filed May 15, 1947 Aprilfi; 1948 s. s. WILSON 2,439,031

' STOP MOTION FOR PILE WIRE LOOMS Filed May 15, 1947 4 Sheets-Sheet 2 April 5, 1948- s. s. WILSON 2,439,031

STOP OTION FOR FILE WIRE LOOKS Filed lay 15, 1947 4 snets-sh et :5

weysfiwzzoom April 6, 1948. s. s. WILSON STOP MOTION FOR PILE WIRE LOOIS Filed llay 15, 1947 4 Sheets-Sheet 4 "s. S'WWW Patented Apr. 6, i948 STOP MOTION FOR PILE WIRE LOOMS Sydney S. Wilson, Sanford, Maine, asslgnor to Goodall-Sanford, Inc.,

poration of Maine Sanford, Maine, a cor- Application May 15, 1947, Serial No. 748,182

'loom upon particular happenings such as the breaking of a pile wire, the detachment of its head, the projection of the pile wire on top of the shed, etc., the present invention effects the stopping of the loom whatever may be the happening or the cause for the failure of a pile wire properly to function at the required time.

The invention has for a, further object to provide a cordinated means for stopping the loom' either upon a failure of the weft, the failure of a warp, or the failure of a pile wire properly to function.

v These and other objects of the invention will appear more fully from the accompanying description and drawingsand will be particularly pointed out in the claims.

Looms of the general type to which this invention relates have long been in use and are well known to those skilled in the art so that it is sufficient here to illustrate and describe only so much of such a loom as is necessary to a disclosure of the present invention.

In the drawings:

Fig. 1 is a top plan view of the main portion of a pile wire loom, partially broken away and with many of the elements of a preferred construction embodying the invention included therein;

' Fig. 2 is a detail in cross section elevationtaken on the line 22 of Fig. 1;

Fig. 3 is a top plan view enlarged corresponding to a portion of Fig. 1 and broken away in the center:

Fig. 4 is aside'elevation of the loom, partially in vertical cross section and partially broken away, and looking toward the left of Figs. 1 and 3;

Fig. 5 is a detail in side elevation and cross section taken on the line 55 of Fig. 3;

Fig. 6 is a front elevation of a telltale construction and associated parts shown in plan in Fig. 3;

Fig. 7 is a side elevation of'theconstruetion shown in Fig. 6: and

Fig. 8 is a diagram illustrating the preferred arrangement of electric circuits employed.

11 Claims. (Cl. 139-336) 2 l The loom illustrated is of a familiar type having a frame It) with its breast beam ll, lay [2 with its reed i3, heddles M for the pile warps and I5 for the ground warps. Suitable drop wires for the warps are employed, those for the ground warps being shown at i6 and those for the pile warps not being illustrated. The weft as usual is carried by the shuttle l'i traveling on the raceway I 8 of the lay 12. The warps as usual lead from the heddles through the reed to the fell iii of the cloth behind the breast beam and the woven cloth winds over the cloth roll 20 at the front or in the usual manner.

The pile wire withdrawing and inserting mechanism is illustrated particularly in Figs. 1 and 3 of a familiar type. The pile wires as usual are woven into the fabric to form the pile loops from the pile warps. A plurality of the pile wires remain in the fabric adjacent the fell and as the weaving proceeds the foremostpile wire is withdrawn from the fabric and inserted into the shed as required by the pattern of the pile. The pile wires 2| are provided with the apertured heads 22 and when the pile wires have been woven in they stand with their heads supported in the magazine 23 in turn supported by the bracket 24 from the breast beam Ii. The mechanism for successively withdrawing the pile wires from the woven fabric and the magazine 23 and inserting them inthe shed is also of a familiar type. It is shown as comprising the carriage 25 mounted to slide on the guideway 26 and given its movement by link and crank connections 21 to one of the operating shafts of the loom. This carriage, as usual, carries a hook 23 adapted to; engage in the aperture of the head 22 of the foremost pile wire in the magazine when the carriage is at its innermost position and to withdraw the wire from the cloth as the carriage travels to the vright. The carriage also has the usual latch member 29 which acts to insert the pile wire into the shed and its head into the magazine in the rear of the previously inserted wires. Thewire, while being withdrawn from the magazine and inserted into the shed, is guided in a grooved track 30 pivoted atits right hand end and swung vbetween withdrawing and inserting positions by the usual' connections 3| operated in properly timed'relation with the cycle ofloom operation. The withdrawing and inserting movement of the carriage is. timed, as usual, to take place at predetermined times by the mechanism of the loom as required by the pattern of the pile fabric being woven and the shaft 32 is here assumed to be driven by the interchangeable gears 33 in the required timed relation for that all of the foregoing mechanism is of a familiar purpose. 1 Since left or the side opposite to the magazine 2: and

uponthe succeeding beat-up of the lay the pile wire will be driven up to the fell. .Now if in r 1 any way this mechanism fails to function, either by the pile wire failing to be withdrawn, by the head breaking off from the body of the wire, by

the pfle wire riding over or under the shed or failing to enter the shed or failing to pass entirely through the shed into its proper position, or by the happening of any other failure, then the pile wire will not be in the shed with its end projecting beyond the selvage so as to be carried forward by the lay in proper position. In the present invention the failure of this requirement for a properly positioned pile wire to exist, after an insertingmovement of the pile wire withdrawmg and inserting means takes place, is employed I to effect stopping of the loom, and thus prevent any damage to the fabric or the loom mechanism which might result from improper functioning of the mechanism. In the preferred embodiment of this important feature of the invention a portion of the usual mechanism for stopping the loom upon failure of the weft is conveniently employed. I i

The mechanism for stopping the loom upon failure of the weft is shown as of the usual filling fork type and is illustrated'somewhat in detail in Fig. 4. The filling fork 34 is pivoted at 35 on the filling fork slide 36 mounted in the bracket 31 supported on the breast beam ii. A weft hammer 38, pivoted at 39 on the loom frame, is given its usual vibrating movement in timed relation to the cycle of 100111 operation in the usual manner. in this type of mechanism if the weft for any reason falls or isabsent from in front of the filling fork and the opposed gate 40 between the reed i3 and the shuttle box, the fork will not be tilted on its pivot 35, but will remain in the position shown in Fig. 4 and the weft hammer will engage the tail 4| of the fork and move the fork slide 38 forward engaging and rocking the lever 42 pivoted at 43 on the loom frame and the adjustable stop 44 on this lever will engage the projection '45 depending from the controller rock shaft 46 journaled on and extending across the loom frame beneath the breast beam and thus effect the stopping of the lo'om by any of the usual means operated by this movement of the controller shaft 46. mechanism for stopping the loom is also well known and familiar and needs-no further description.

In the preferred embodiment of "the invention for stopping the loom upon the failure of a pile wire properly to function means controlled by an electric circuit are provided. For this purpose a feeler support 41 ispivoted at its forward end at I I 48 on a bracket 49 carried by the breast beam and a feeler 50 is pivoted at 5| on the rearward end of the feeler support. These parts are so mounted that the feeler extends adjacent the path of the selvage slightly rearward of the fell so that it lies across the path of the projecting end of a movementof the pile wire withdrawing and inserting means this feeler ill will be-rocked on its pivot opening an electric circuit, while if the pile wire is not present the feeler will not be rocked, the electric circuit will remain closed and will act to effect stopping of the loom.

The electric circuits employed are as shown diagrammatically in Fig. 8 The electric current employed may be taken from any suitable source through the wires 52 connected to a switchboard II conveniently mounted upon the front of the loom frame, as shown in Fig. 4. Thiscircuit is provided with a suitable switch 54 for connecting and disconnecting the source of current.

The circuit, the closing of which effects the stoppin of the loom upon the failure of the pile wire properly to function, is shown as including a solenoid II mounted on the fork slide 36. The core I of "this solenoid is pivoted at 51 to a bell crank lever-I8 fulcrumed at 59 on the fork slide 08 and the core is pressed yieldlngly forward by a light spring ill holding the rearward end of the bell crank lever out of the path of the weft hammer 38. When the circuit is closed by the failure of the filling fork ill to rock on its pivot the solenoid I! isenergized drawing the core 56 rearward and bringing the bell crank lever it into the path of the weft hammer with theresult that the fork slide 30 is moved forward and acts to effect stopping of the loom through the mechanism already described.

After the feeler '50 has been rocked by the projecting end of. a properly positioned pile wire on the beat-up it is necessary that the feeler shall be lifted over the wire so as to drop into position behind the fell for the next operation. This is effected in the construction illustrated by rocking the feeler support 41 upwardly aboutits pivot 48 and then allowing it to drop down. For this purpose a bell crank lever is fulcrumed at we on gagement with the pile wire and allowed to drop into position in the rear of the fell.

' As already pointed out a pile. wire withdrawin and inserting movement takes place, in certain timed relation to the cycle of loom operation and consequently the controlling circuit must be kept veniently operated by the cam 63 on the shaft 32 so as to close the circuit only at the required times. i

It is also desirable that any of the electric circults employed shall be opened whenever the loom is stopped for any reason and for that purpose another pair of contacts are illustrated at l4 and I which are normally closed but which properly positioned pile wire when that pile wire is v beaten up to the fell by the reed. If the pile wire is thus properlypositioned after an inserting are opened by the controller shaft when rocked to loom-stopping position.

The invention also coordinates with the means for stoppi the loom upon'the' failure of the weft and the means for stopping the loom u on the failure of the pile wire withdrawing and inserting mechanism properly to function means for stopping the loom upon failure of a warp.

This latter means is shown of a familiar type and effecting the stopping of the loom under the control of an electric circuit. An ordinary form ofdrop wire mechanism is indicated at the left of .stopped byvthe engagement of the weft hammer with the bell crank lever 58 in the same manner as already'described.

The invention also provides a telltale device operated by the circuit closedv by the feeler 50 to enable the operator readily to determine'whether the loom has stopped by warp failure or by failure of the pile wire withdrawing and inserting mechanism properly to function, To avoid any possibility of they circuit energizing the solenoid 55 opening before the controller shaft 48 has been rocked to loom-stopping position, the operation of thetelltale mechanism is employed simultaneously to close another circuit including the solenoid 55.

The ,telltale mechanism is mounted on the switchboard 53 and in its preferred form is shown in detail in Figs. 6 and 7. In the form illustrated it comprises-a solenoid 69 included in the same circuit as the solenoid 55 and the contacts Ill and H opened and closed by the feeler 50: A shield 12 is pivoted at 13 on the switchboard and held in raised position by a trip 14 pivoted at 15. An arm 16, connected to the shield 12, extends laterally therefrom and is engaged by a plunger 11 mounted for vertical movement in a bracket 18 and yieldingly pressed downward by a spring 19. This plunger carries a contact member 80 actin when the plunger moves downward to engage and close a pair of contacts 8| and 82. It will thus be seen that when the circuit is closed by the feeler 50 at the contacts I and H the solenoid 69 in the circuit will be energized causing its core to attractthe trip 14, release the shield 12 which drops to indicating position shown in dotted lines in Fig. 7. This action opens the circuit at 83 and immediately the spring 18 causes the contact member 80 .to close the circuit through the contacts 8| and 82, thus maintaining the solenoid 55 energized.

The operation of the electric circuits will be better understood from the diagram in Fig. 8. With the 100m in operation the contacts 64 and 65 under the control of the rock shaft 46 are closed, the switch 83 is closed,,and the contacts BI and 82 are open. If now a pile wire withdrawing and inserting movement takes place the circuit, running from the contact ll through the contacts 62, 6|, through the switch 83, the solenoid 69, through the so1enoid'55, to the contact 65 and back to the contact 10, is closed by the cam 63 through the contacts and 62. If the pile wire has been properly inserted and the mechanism is functioning properly the contacts l0 and H are opened by the wire: and nothing happens, but if the pile wire withdrawing and inserting mechanism has failed properly to function the feeler 50 is not moved as the lay heats up, the contacts and H remain closed, the entire circuit is closed, and the solenoids 55 and 69 are simultaneously energized. Immediately the telltale drops, an electric circuit is closed through the contacts -8| and 82 through the solenoid 55, through the contacts 64-65, thus cutting out the contacts 6l-62 and Hi-H, maintaining the solenoid 55 energized and the loom stops when the circuit is opened at 64-65.

If a warp fails a circuit is closed at the contacts 61-68 directly through the solenoid 55 and through the contacts 64-68, energizing the solenoid 55. efiecting the stopping of the loom, and

opening of the contacts 64-65, but not eifecting the telltale.

7 Having thus described the invention, what is laimed as new, and desired to bev secured( by Letters Patent,is: y

1. In a loom the combinationot pile wire withdrawing and inserting means atoneside oi the loom, a feeler support pivotally mounted on t e breast beam at the opposite side of the loom, a

feeler movably mounted on the support and extending adjacent the path of the'selvage rearward of the fell, means acting to stop the loom,

. unless. after an inserting-movement of the pile wire withdrawing'and inserting means, a pile wire is in the shed projecting from the salvage and is carried forward by the lay on the beat-up to engage and move the feeler, and means acting after each wire inserting movement and subsequent beat-up of the lay to raise the feeler support on itspivot and allow the feeler to drop into normal position rearward of the fell. 7

2. In a loom-the combination of a-weft hammer vibrating in timed relation to the cycle of loom operation, an actuator mounted for movement into and out of the path of the weft hammer and acting when in the path of the weft hammer to be struck thereby and effect the stopping of the loom, pile wire withdrawing and inserting means at one side of the loom, a feeler mounted on the breast beam at the opposite side of the loom and extending adjacent to the path of the selvage rearward of the fell, means, controlled by the failure of the feeler, after an inserting movement of said withdrawing and inserting means, to be moved forward by a pile wire intheshed with its end projecting from the selvage and carried forward by the lay on the beat-up, to cause the actuator to move into the path of the weft hammer.

3. In a loom the combination of a weft ham- H mer vibrating in timed relation to the cycle of loom operation, an actuator mounted for movement into and out of the path of the weft hammer and acting when in thepath of the weft hammer to be struck thereby and effect the stopping of the loom, pile wire withdrawing and inserting means at one side of the 100m, a feeler mounted on the breast beam at the opposite side of the loom and extending adjacent to the path of the selvage rearward of the fell, a solenoid acting when energized to cause the actuator to move into the path of the weft hammer, an

electric circuit containing the solenoid and a pair of contacts normally closed by the feeler anda second pair of contacts normally open, means for closing the second pair of contacts upon an inserting movement of the pile wire-withdraw-' ing and inserting means, the feeler thereupon acting to maintain the first pair ofcontacts closed and thus eifect the stopping of the loom unless it is moved by a pile wire in theshed.

projecting from the selvage and carried forward by the lay on the beat-up. l

4. In a loom the combination of pile wire withdrawing and inserting means at one side of the loom, a feeler mounted on th breast beam at the opposite side and extending adjacent the path of the selvage rearward of the fell, an electriccircuit containing a solenoid, means controlled by the solenoid when energized acting to'efiect the stopping of the loom, a pair of contacts in the circuit normally closed by the feeler, a second pair of contacts in the circuit normally open,

means for closing the second pair of contacts upon an inserting movement 01' the pile wire aesa'osi withdrawing and inserting means, a second solenoid in the circuit, a telltale device, and means for eifecting the operation of the telltale device through the energization of the second solenoid, the circuit thus acting to stop the loom and operate the telltale unless, after an inserting movement of the pile wire withdrawing and inserting means, a pile wire in the shed with its end projecting from the selvage and carried forward by the lay engages and moves the feeler to open the first pair of contacts.

5. In aloom the combination of pile wire withdrawing and inserting means at one side of the loom, a reeler mounted on the breast beam at the opposite side and extending adjacent the path of the selvage rearward of the fell, an electric circuit opened by the feeler when struck, after an inserting movement of the pile wire withdrawing and inserting means, by a pile wire in the shed with its end projecting from the selvage and carried forward by the la'y,and

means controlledv by the circuit when not thus opened by the feeler actingto stop the loom.

6. Ina loom described'and operated as in claim 5' together with asecond electric circuit including the first solenoid and means acting upon the operation of the telltale to close the opens before stopping of p the loom.

7. In a loom the combination of pile wire withdrawing and inserting meansat one side of the loom, a feelervinounted on the breast beam at the opposite side and extending adjacent the path of the selvage rearward of the fell, an elec- 8 r r the. opposite side and extending adiacent the path .of thefselva e rearward ofthe fell, an elec-' tric circuit controlled by the failure of the feeler, after an inserting movement ofsaid withdrawing and inserting means, to be moved by a pile wire in the shed withits "end projecting from mer vibrating in timed relation to the cycle of loom operation, means actuated by the weft hamme! for stoppin theloom either upon failure of vtheweftoruponi'ailureoi'awarporuponfailure 'of a pile wire in the shed-with its end pro- Jecting from the selvage to be carried forward by the lay on thebeat-up after aninserting movement of a pile wire withdrawing and inserting means.

i 10. In a loom the combinatiion as set forth inclaim 9, in which the said means actuated by the weft hammer is controlled upon the said failureofawarpbyaeloeedelectriccircuitsnd upon the said failure of a pile wire by a second tric circuit controlled by the failure of the feeler,

- after an inserting movement of said "withdrawing and inserting means, to 'be moved by a pile wire in the shed with its end projecting from the nismupon failure of a warp acting to effect stopping oi' the loom, a telltale, and means controlled l by one of the circuits to operate the telltale.

, 8. In a loom the combination-of pile wire withdrawing and inserting means at one side of the Y loom, a feeler mounted on the'breast-beam at closed electric circuit. v I 11.In a loom the combinationasset forth in claim 9,in whichthesaidmeansactuated by the weft hammer is controlled upon the said failure of a warp by a closed electric circuit and'upon the said failure of a pile wire by a second closed electric circuit, together with means acting to open both circuits upon the stopping of the loom.

-" BYDNEYS.WILSON.

amend mm The following references are of record in the file of this patent:

' .Nuinber UNITED PATENTS Name Date 7,660 Bigelow Sept, 24, 1850 177,020 Bigelow May 30, 1876 542,806 Poole July 16, 1895 1,815,277 Spendlcve July 21, 1031 1,061,400

Spendlove June 5, 1934 9 Certificate of Correction 1O Patent No. 2,439,631. April 6,1948.

SYDNEY S. WILSON It is hereby certified that error appears in the printed specification of the above numbered patent requiring correction as follows: Column 7, line 25, for the claim reference number 5 read 4; and that the said Letters Patent should be read with this correction therein that the same may conform to the record of the case in the Patent Ofiice.

Signed and sealed this 25th day of May, A. D. 1948.

THOMAS E MURPHY, Assistant flam/mz'ssioner of Patents.

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