US1409778A - Lay-mark preventer - Google Patents

Description

A. E. RAVENELLE.

LAY MARK PREVENTER.

APPLICATION FILED FEB- I3| l92l. 1,409,778, Patented Marrl l, 1922.

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jwuemioz A. E. R AVENEL LE. LAY MARK PREVENTER.

APPLICATION FILED FEB. 13. 192]. 1,409,77 8. Patented Mar. 14,1922.

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411E. Pavenelle.

A. E. RAVENELLE.

LAY MARK PREVENTER. APPLICATION FILED FEB. 18, 1921- 1,409,778. Patented Mar. 14, 1922.

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amputee z/enelle ADELARD E. RAVENELLE, OF NORWICH, CONNECTICUT.

LAY-MARK PREVENTER.

Specification of Letters Patent.

Patented Mar. 14, 1922.

Application filed February 18, 1921. Serial No. 445,992.

To all whom it may concern-.-

Be it known that I, ADELARD E. RAVEN- nLLn, a citizen of the United States, residing at Norwich, inthe county of New London and State of Connecticut, have invented certain new and useful Improvements in a Lay-Mark Preventer; and I do hereby declare the following to be a fullfclear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same.

The object of the invention is to provide means for preventing lay marks in woven fabrics, or to provide an indicator whereby the weave line of fabrics in a loom and in the course of production may be accurately adjusted with relation to the path of movement of the lay to avoid the crowding of the picks when the loom is'restarted after the operation thereof has been interrupted and to prevent a loose or widely spaced arrangement of the picks, one fault resulting in that when the machine is set to'producea fabric having a specified number of picks to the inch, should the operat on be interrupted for any cause and it be necessary for the operator or weaver to pick out or remove some of the fibres, thereby dislocating the weave- -line of the woven fabric with rela tion to the pathof movement of the lay, his

readjustment of the weave line must be absolutely accurate or the machine upon being restarted will lay the fibres too close together for a certain distance or too far apart throughout a number of picks or operations, with the result of laying either an extra thickness orcloseness of the fibres or picks, or a looseness or undue separation thereof constituting what isknown as above indicated as either a heavy or a light lay mark; and it is with the object of enabling the weaver after such an interruption of the operation of the loom to readjust the weave line with absolute accuracy and without loss of time sons to enable him to resume the weaving operation where it was interrupted and lay the picks at exactly the rightintervals in accordance withthe setting of the machine and the portion of the fabric already woven, to the end that the possibility of forming lay marks may be avoided, that the mechanism forming the subject of invention has been devlsed; and the same conslsts in a construction, combination, and arrangement of parts constituting an apparatus which may when not in use be conveniently stored under or adjacent to the loom in position for immediate use when required, a preferred embodiment of such mechanism being illustrated in the accompanying drawiug, wherein:

Figure 1 is a front view of the apparatus arranged in operative relation with a loom, a portion .of which is shown to indicate the mode of operation of the apparatus.

Figure 2 is a side view of the same.

Figure 3 is an enlarged detail view of the head of the apparatus.

Figure 4C is a view of the gage arm detached.

Figure 5 shaft.

The apparatus consists essentially of a head indicated generally at '10, which is is a similar view of the crank adapted to normally occupy a position beneath the loom indicated generally at 11 or what'is known as a heavy lay mark and the other in a light lay mark, due to the fact beneath the planeof movement of the woven fabric and the mechanism by which the same is produced, under such conditions as to adapt it to be moved into the plane of the fabric when required to justify the weave line in-the resetting of the woven portion of the fabric after an interruption of the operation of the loom, and to provide for such movement of the head it maybe supported by a vertically movable plunger rod 12, mountedin suitable guides 13 and 14 upon a standard 15 having a suitable base 16 which may be boltedor otherwise secured to the floor, a treadle 17 being arranged in operative relation with the plunger rod and mounted upon a suitable bracket 18, a cushion spring 19 serving to relieve the jars on the head when pressure is removed from the treadle to per 'mit the mechanism to drop from the plane of the fabric. 7

The justifying mechanism in the illustrated embodiment of the invention consists cated at 26. This gage arm is of'pendulous construction, having the counter-weight 2T cause a heavy lay mark by crowding the itsnormal or truly vertical-position will be weft threads in the beating movement of the lay.

Connected with the gage arm is an indicator mechanism consisting of a pointer 28 traversing a dial plate 29 supported by the bracket 20 and having a suitable normal or unit mark 30 to which the pointer should be directed when the gage arm is in its normal position with the edges of the blades 24 in light touching contact with the weave line of the fabric. I

In the construction illustrated, motion is communicated from the gage arm to the pointer by means of a crank shaft 31 having a terminal spindle 32 mounted in a bearing in the bracket 20 and carrying the pointer,

and having at its opposite end a pin 38 arranged'ina slot 34 of the gage arm near the lower or weighted end thereof so that a multiplied in the represention thereof by the pointer ;upon the dial plate and will indicate unmistakably to the operator that 'adjustment of the weave line is necessary Obviously if the weave line is too far back and is outof contact with the. edges of the blades 24 the fact may readily be determined by a slight swinging'movement of the gage arm..' When the edges of the blades are in" *light contact with the weave line and the pointer is directed to the unit or neutral mark 30 of the dial, the weaver is advised. that the fabric is in proper position to re-f I sume the operation of, the loom without peesibility of producing a lay mark.

Owmg to the fact that the apparatus may be thrown into operative relation with the fabric merely by pressure upon the treadle,

. it will be obvious that the adjustment of the weave line of a fabric after an interruption of.

the operation of a loom, may be effected promptly as the device will instantlyindi. cate whether or notthe weave line is inthe. proper position and the direction in which it must be moved in order that it may.

occupy the proper position, and as a consei quence much loss of time may be avoided in the setting of tlie'fabricrand the reductionof the value of the fabric by producing lay marks therein'which involvesa well recog nized commercial depreciation, may..,be.

avoided-, itbeing a well known fact that only. the most skillfulweavers can properly adjust-the weave line merely bytesting the" same through the movement of the lay or otherwise,"and then only by the exercise of the utmost care and under conditions involving a considerable expenditure of time. The-lay preferably carries a bumper protector 34 for preventing movement thereof when the apparatus embodying the invention is in operative position, and in order to of the treadle to permit of the elevation of the gaging apparatus whereas when the hand lever is movedtoward the machine to start the loom the latch is permitted to drop into the path of the treadle and lock it against movement.

' Having thus described the invention,

what I claim is: i I

, 1. An apparatus for the purpose described havinga weave line indicator movable in I a path perpendicular to the plane of movevery slight deviation of the gagearm from ment of the fabric and supported by a treadle actuated plunger. I V

2. -An apparatus for the purpose described having a weave line indicator movable toward and from the plane ofimovementof the fabric and providedwith a pendulcus the fabric and provided with a pendulous gage arm, and'a cooperatlng index for registermg deflections of the indicator from the normal position.

4;. Anapparatus forthepurpose described I having a weave line indicator movable toward and from the plane of movement of the .fabric and provided with a pivotal counter-weighted gage arm having blades for interpositlon between the warp threads and edge contact with the weave line.

5. An apparatus for the purpose described having a weave. line indicator movable toward and from the plane ofmovementof the fabric and. provided with a pivotal counter-weighted gage arm having blades for interposition between the warp threads and edge contact with the weaveline, and a :pointer operatively connected with thegage arm and traversing. a dial plate.

6. An apparatus for the purpose described having a weave line indicator. movable towardand from. theplane of movement of the fabric and provided with 'a pivotal counter-weighted gage farm f havmg blades for interposition between the warpthreads and edge contact with the weave line, anda point er operatively connected with the gage arm and traversing a dial plate, said connection consisting of a crank shaft carrying the pointer and having slotted connection With the gage arm.

7. An apparatus for the purpose described having a Weave .line indicator movable toward and from the plane of movement of the fabric and provided with a weave line contacting element yieldingly movable in the direction of movement of the fabric, said indicator being carried by a movable frame,

ADELARD E. RAVEN ELLE.

lVitnesses CHAS, A. CHAMBERLAIN, THOMAS J. XVIGNALL.

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