US2140789A - Axminster loom rope stop motion - Google Patents

Description

Dec. 20, 19.38.

F. DARIENZO AXMINSTER LOOM ROPE -STOP MOTION Filed Sept. 14, 1937 y 2 Sheets-Sheet l INVENTOR l @$.55 vm-vn ATTORNEY I Dec. 20, 1938. VFpDARlENzo AXMINSTER LOOM ROPE STOP MOTION 2 Sheets-Sheet 2 Filed Sepi. 14, 1937 INVENTOR i v r am (-Dx (am www v ATTORNE Patented Dee. 2o, 1938 2,140,189

UNITED STATES PATENT OFFICE AXMINSTER LOOM ROPEV STOP MOTION Frank Darienzo, Amsterdam, N. Y., assigner to Bigelow-Sanford Carpet Co., Inc., Thompsonville, Conn., a corporation of Massachusetts Application September 14, 1937, Serial No. 163,792 2 Claims. (Cl. 139-336) This invention relates to Axminster looms and which winder the rope 9 winds and unwinds, as particularly to novel mechanism for stopping the indicated, to reciprocate the needle into and out loom automatically when the needle reciprocatof the shed. All of the foregoing mechanism ing rope breaks. is of the usual character in AXminster looms and In A Xminster looms it is customary to insert Arequires no furtherdescription as it forms no 5 the weft by a needle which is reciprocated into part of the present invention. and out of the shed by a rope or similar iiexible A starting lever I5 connects the loom to a suitdriver, power-driven by being wound about an able source of power. The lever illustrated typioscillating drum or scroll. Breakage of the rope fies any desired form of starting and stopping 10 while the loom is running is not unusual, reelement, such as a clutch lever, a belt shifting 10 sulting in breakage of the loom, damage to the lever, an electric switch lever or push button, fabric and possible injury to the operative. or other element, as desired. When a lever is The object of the present invention is to proused, as shown, it may be guided between its vide mechanism to stop the loom automatically full line on position and its dotted line off upon such rope breakage and to that end, as will position by a slotted bracket I1 having a notch l5 appear, I provide a follower engaging the rope i9 adapted to hold the lever in its "on posiand preferably tensioning the same, which foltion. The spring 2I indicates that the element lower may be o ne of the pulleys commonly emis shifted to its orf position automatically when ployed to guide the rope, so connected by linkage it is moved out of the notch I9. Any other type A to the starting lever as to stop the loom autoof starting element may, of course, be used. 20 matically when the rope breaks. My novel stop In the embodiment of my invention illustrated mechanism may also desirably operate to take in Fig. 1, the pulley II is rotatably mounted on up the slack as the rope stretches during use a shaft formed on one end of a bar 21 which and to stop the loom automatically when the is pivoted to the frame of the machine at 29.

25 stretch has become excessive, indicative that the A spring 3i, attached at 33 to the frame of the 25 rope should be replaced. machine and at 35 to the bar 21 yieldingly urges These and further objects and advantages of the bar in a clockwise direction about pivot 29, my invention will appear from a more detailed as viewed in Fig. 1, and this movement is limited description thereof, taken with accompanying by an elongated slot 3l in a bracket 39 attached drawings, in which: to the loom frame, into which slot projects the 30 Fig. 1 is a perspective view of a needle drive end of shaft 25, as shown. having my DOVel all'OIIletC SOD meehailism em- The end of bar 21 opposite that formed into bodied therein; the shaft 25 carries, pivotally secured to it at Fig. 2 is an elevation View, partly in Section, 4I, a tie rod 43, secured at 45 to a lug 41 (Fig. 2) teken 0n the line 2 2 0f Fg- 15 projecting from a hub 49 rotatably mounted on 35 Fig- 3 iS en eleVatOIl View, Similar i0 Fig. 1, a stud shaft 50. The hub 49 carries a projectof a modified form of my invention; and ing linger 5I adapted to bear downwardly on a Fig. 4 is a vertical section on the line 4 4 rod 53 projecting from a rotatably mounted hub of Fig. 3. 55. The hub also carries a projecting arm 51 40 My invention may be embodied in any loom engaging the handle of the starting lever I5 and 40 of the Axminster .type in which the weft is inadapted to move the same out of the notch I9 serted by a needle, reciprocated by a rope or as indicated in dotted lines in Fig. 2. other flexible driver. Such weft inserting mech- With the mechanism constructed as above deanism is illustrated diagrammatically in Fig. 1 scribed, it is apparent that during the normal wherein the weft I, unwound from a suitable running of the loom the pulley II tensions the 45 Supply package, paSSeS through the eye of a neerope 9 by reason of the spring 3| urging clockdle 3 Slidably leCeiVeCl and guided by the needle Wise rotation of the bar 21 as viewed in Fig. 1. rail 5. The needle iS Connected by bracket 'I If the rope should break, the bar 21 will swing to a flexible driver 9 which may be e IOpe, Chain, about the pivot 29 in the amount permitted by or the like, in this instance a rope, guided about the elongated slot 31, thus, through tie rod 43, 50 a pulley Il near the shed and another similar rotating hub 49 and moving finger 5I and rod 53 pulley (not shown) at the opposite end of the downwardly. The resultant movement of arm 51 needle rail. The rope is reciprocated by an osmoves lever I5 out of notch I9 and spring 2I cillating drum or scroll Winder I0, driven from (Fig. 1) immediately shifts the lever to its 01T 55 the loom shaft by mechanism, not shown-about position, thereby stopping the loom. 55

As a modification of the preferred form of my invention which has been described above, I have disclosed in Figs. 3 and 4 a construction which, by employing an auxiliary pulley, obviates the necessity for a special mounting for the main pulley In Fig. 3 the pulley la, around which rope 9a runs, may be mounted in a fixed bearing in the customary manner. The auxiliary pulley is indicated at |03 and, as shown in Fig. 4, this pulley is preferably mounted beneath the lower course of rope 9a on a shaft |01 pivoted at |09 to a bracket depending from the loom frame. A weight or spring l2, attached to an extension of shaft |81, urges clockwise rotation of the shaft about pivot |09 and the opposite extremity of the shaft is received in an elongated slot formed in bracket adapted to guide and to limit the vertical swinging movement of shaft |01 about pivot |09.

A link ||3, loosely mounted on shaft |01, is pivoted at 45a to a lug 41a projecting from a hub 49a rotatably mounted on stud shaft 50a, the arrangement being identical with the similarly numbered parts in the preferred embodiment illustrated in Fig. 1. Hub 49a similarly carries a finger 5|a which operates through arm 51a to shift lever |5a out of its notch and to its off position through the influence of spring 2| just as in the preferred embodiment above described.

It will be noted that in both embodiments of my invention above described, the follower or pulley which actuates the stop mechanism when the rope breaks, also so applies tension to the rope as to take up the slack as the rope stretches during use. If desired, that feature of my invention may be dispensed with, particularly where a non-stretching driver, such as a chain, is employed. However, it is a desirable feature where a stretchable driver is used and it will be noted that with such a construction the loom will be stopped automatically when the stretch has become excessive, indicative that the rope should be discarded.

It will be apparent to those skilled in loom construction that other linkage of a similar nature may readily be employed to connect a follower engaging the needle driving rope with mechanism adapted to connect and disconnect the loom with a source of power. Whereas I have found that the embodiments illustrated are best adapted for my purpose yet my invention is not to be limited thereto or to any other details set forth herein except as indicated in the appended claims.

I claim:

l. In an Axminster loom, the combination with a weft inserting needle, a flexible driver for reciprocating the same into and out of the shed and a starting element adapted to start and to stop the loom, of a movably mounted member having a follower engaging the driver so that movement is imparted to the member when the driver breaks and linkage connecting the said member directly to the starting element so that the said movement of the member is imparted through the linkage to the starting element whereby to stop the loom automatically and immediately upon breakage of the driver.

2. In an Axrninster loom, the combination of a weft inserting needle, a flexible driver for reciprocating they same into and out of the shed, a needle rail guiding the needle during its reciprocation, a pulley at each end of the needle rail around which the driver passes, a pivotally mounted bracket supporting one of said pulleys, means yieldingly urging rotation of said bracket about its pivot to tension the driver as it passes about said pulley, a starting element adapted to start and to stop the loom, means releasably holding the element in its on position to run the loom, and linkage connecting said bracket with the starting element to release the latter and stop the loom automatically when the driver breaks.

FRANK DARIENZO.

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