US2545065A - Stop motion for jacquard looms - Google Patents

Description

March 13, 1951 A. J. BARTSON 2,545,065

STOP MOTION FOR JACQUARD LOOMS Filed March 1, 1950 2 Sheets-Sheet 1 nII 23 26 l//// 28"- mama/Q finersm;

INVENTOR- ATTORNEY A. J. BARTSON STOP MOTION FOR JACQUARD LOOMS March 13, 1951 2 Sheets-Sheet 2 Filed March 1, 1950 /)1 5mm BAIFTJON,

INVENTOR- ATTORNEY Patented Mar. 13, 1951 UNITED STATES PATENT OFFICE 2,545,065 STOP MOTION FOR JACQUARD LOOMS Albert J. Bartson, Ridgewood, N. J. Application March 1, 1950, Serial No. 147,055

4 Claims. 1

This invention relates to jacquard looms and more especially to an f improved stop motion therefor for automatically stopping the loom in the event the so-called odd and even cards of two pattern card series in a double cylinder double lift jacquard become disarranged resulting in the cards alternating out of time.

The primary object of this invention is to provide relatively simple and efiective means for rendering the usual types of drop-wire stop motion operable for automatically stopping a loom when the cards of a double cylinder double lift jacquard loom are alternating out of time. This is accomplished by providing two independently operable members which are so arranged as to normally assume an inoperative position and which are simultaneously activated by the odd card and even card series when the cards are alternating out of time and which will result in one of the usual drop-wires being lowered into engagement with a bar for actuating the stop motion of the loom.

It is another object of this invention to provide an improved stop motion for a double cylinder double lift jacquard loom wherein a series of odd cards passes over one of the cylinders and a series of even cards passes over the other of the cylinders, comprising a lever oscillatably mounted intermediate its ends on the loom frame a substantial distance above and forwardly'of the usual drop-wires of the conventional type of electrical stop motion and a pivoted actuating arm the free upper end of which is normally disposed out of the path'of travel of an adjacent end of the lever and the lower end of the pivoted actuating arm being connected intermediate the ends of a carrier arm pivotally mounted at one end on the loom frame and its free'end having a cord or the like to the lower end of which a drop-wire is connected, the lever and the actuating arm being actuated, one by the odd cards in the series and the other by the even cards in the series in such a manner that when the odd and even cards alternate out of time the lever and the actuating arm are rendered active simultaneously so the free end of the actuating arm will be disposed in the path of one end of the ,lever and so the lever will move the actuating arm downwardly thus causing the free end of the carrier arm, to which the lower end of the actuating arm is connected, to move downwardly, permitting the drop-wire connected to the carrier arm to fall, by gravity, against the usual bar Some of the objects having been stated, other objects will appear as the description proceeds when taken in connection with the accompanying drawings in which-- Figure 1 is a diagrammatic illustration showing so much of a double cylinder jacquard as is necessary to the understanding of the invention and also showing the upper'portion of a loom associated therewith schematically;

Figure 2 is a schematic top plan view looking substantially along the line 22 in Figure 1 and omitting the cords which connect the usual heddles with the jacquard mechanism;

Figure 3 is an elevation of the improved apparatus but showing the loom frame in cross section and is taken sunbstantially along the line 33 in Figure 1;

Figure 4 is an enlarged vertical sectional view taken substantially along the line 44 in Figure 1; 7

Figures 5 and 6 are-elevations of a group of odd card and even card series of pattern cards which are adapted to ride over the jacquard cylinders shown in Figure 1. v 1 1 Referring more specifically to the drawings, the numerals l0 and H designate, respectively, the odd and the even cylinders over which pass the odd pattern cards generally designated at I2 (Figure 5) andthe even pattern cards generally designated at I3 (Figure 6). The odd cylinder in and the even cylinder II are alternately rotated in a step-by-step manner through conventional means, not shown, and the odd cards I2 control a bank of needles broadly designated at M while the even cards, in turn, control a bank of needles broadly designated at IS.

dles not shown.

As is Well known to those familiar with the art, the pattern cards l2 and I3 are variously perforated and when they are positioned for engaging the needles, the needles merely pass through the various perforations aligned therewith and leave the corresponding hooks l6 and I! in positionto be raised by their corresponding grifi bars -20 and 2|, On the other hand, the

imperforate areas in the pattern cards engage the needles aligned therewith, thrusting these needles longitudinally, and thereby flexing the corresponding hooks laterally to clear their corresponding grifi bars.

The conventional comber board 24 is connected at opposed ends thereof to uprising portions 25 and 26 of loom side frame members broadly designated at 21 and 28, respectively, these uprising portions 25 and 26 being connected at their upper ends by the usual arch members 31 and 32,

The loom side frame members 21 and 28 support,

a conventional loom stop motion including a series of contact bars 34 each of which has a plurality of drop-wires 35 mounted thereon and which are normally held in a raised position with respect to the bars 34 by the usual warp yarns not shown. 7 There are various types of stop motions employing the drop-wires 35 such as the electrical stop motion shown in United States Patent No. 1,689,701 of October 30, 1928, or such as the meohanical type of stop motion shown in United States Patent No. 1,687,471 of October 9, 1928. Since the structure of these stop motions is conventional and well known to those familiar with the art, a further illustration and description of the-same is deemed unnecessary.

The arch member BI is slidably penetrated by a restricted threaded end portion 31' of a horizontally disposed stub shaft 40 and is secured in the arch member 3| by a nut 41. The horizontally disposed stub shaft 40 also has a medial .restricted portion 42 and a restricted threaded end portion 43 on its end remote from the restricted threaded portion '31. An oscillatable lever 45 is oscillatably mounted intermediate its ends on the medial restricted portion 42 of the stub shaft 40 (Figure 4-) and has a weight member 46 welded to one end thereof and a hook member 47 suitably connected to the other end thereof. The lower end of a cord 50 is connected, as at to the end of the oscillatable lever 45 adjacent the weight member 46. This cord 50 extends upwardly and is connected to the lower end of a hook :52 associated with the odd card series. A

hook 53 of the even card series has the upper end of a cord 54 connected to the lower end thereof, and this cord '54 extends downwardly and partially surrounds the pulley 55. The pulley 55 is oscillatably mounted on the medial restricted portion 42 of the horizontally disposed "stub shaft 48 and the pulley 55 as well as the oscillatable lever 45 are prevented from having excessive end-wise movement on the medial restricted portion 42 of the stub shaft 40 by a nut 155 threadably mounted on the restricted thread n "a substantially vertically disposed universally pivoted actuating arm which is loosely penetrated at the lower end thereof by a screw B l so as to provide a universal connection between a medial portion of a substantially horizontally disposed pivoted carrier arm 62 and the lower end of the actuating arm 60.

Suitably secured to the arch member 3! is an angle clip guide bracket 63, the horizontal leg of which is disposed beneath the hooked portion 41 of the oscillatable lever 45. This horizontal leg of the angle clip guide bracket 63 has an open-ended slot 64 therein through which the upper portion of the actuating arm '60 extends and the walls of the slot 64 serve as a guide for the upper end of the actuating arm Bu as it is moved to and fro by means to be later described. A tension spring 65 is connected at one end to a medial portion of the actuating arm 60 and is connected at its other end to the upstanding portion 20 of the loom side frame member 2'! thus normally urging the actuating arm 50 from right to left and out of the arcuate path of travel of the hook 4i.

The free end of the actuating lever 60 in Figure 1 has a lip portion 61 integral therewith which is adapted to be engaged, on occasion, by the hook portion 41 of the oscillatable lever 45. A tension spring H1 is connected at its lower end to a medial portion of the pivoted carrier arm 62 and its upper end is connected to the bracket 64. This tension spring 1U normally urges the free end of the carrier arm 62 upwardly in Figure 3. This carrier arm 62 is pivotally connected, as "at ll, to an angle clip 12 suitably secured to the upper surface of a horizontally disposed bar '13 extending between the upstanding portions 25 and 26 of the loom side frame members 21 and 28, respectively, and being disposed immediately ad- Jacent thecomber board 24.

The carrier arm 62 extends outwardly and has the upper end of a cable, cord, or the like, 15 connected thereto, which extends downwardly and is connected tonne of the drop-wires 35, this particular drop-wire'being employed in the operation of the present invention only and it is evident that this particular drop-wire should not have a warp yarn passing through and supporting the same. The drop-wire 35, to which the lower end of the cord'lS is connected, restri'cts upward movement of the pivoted carrier arm 62 as well as the actuating arm 60 since the contact bar 34 passes through the drop-wire 35 and restricts'upw'ard movement thereof.

Now, referring to Figure'fi, it will be observed that certain of the odd cards 12 are provided with a perforation'im and certain'spaced odd cards are provided with an imper'forate area Bl which corresponds with the perforation 80 in the cards therebetween. For purposes of description, every sixth card l2 in 'the odd card series shown in Figure 5 is provided with "the imperforate area 8! while those cards l2 therebe'tween are provided with the perforation '80. On the other hand, every sixth card l3 in'the even card series shown in Figure 6 is provided with a perforation '32 while those cards 13 therebetween are provided with an imperforate area 83 corresponding to the perforation 82. The perforations 80 and'BZ in the cards I 2 and-1'3 are actually 'the same size as the usual pattern perforations shown on these cards but are exaggerated. In other words, when'the two series of cards 1'2 and T3 are alternating in time," that is, in proper sequence, at least one unperforated card of one series will follow a perforated card of theot'her series.

Therefore, assuming that every sixth card in the odd card series l 2 lFigure 5) is provided with an imperforate area BI and every corresponding sixth card in the even card series '13 (Figure '6) is provided with the perforation 82, it is thus seen that upon every sixth stroke of the odd card cylinder 10,, a card l2'hav'ing .an'imperfo'ra'te area 8] therein will flex the hook 52 laterally'to clear the griif bar 20 which means that upon every sixths'tep in rotation by the odd card cylinder ill, the hook member 41 on the end of the oscillatablelever '45 will 're'ma'inin the elevated position shown in Figure 1 sinceth'e other end 5. thereof will fail to be elevated by the cord 50 connected to the hook 52.

On the other hand, upon every sixth stroke by the even card cylinder I I, the sixth even card I3 having the perforation 82 therein will fail to move the needle I5, corresponding to the hook 53, inwardly with the result that the hook 53 will be elevated by the corresponding griff bar 2I. This will occur at every twelfth pick, since the odd and even cylinders I and II alternate in moving inwardly. This upward movement of the hook 53 would cause the lip portion 61 at the upper end of the actuating arm 6|] to be moved into the vertical plane of the hook portion 41 on the free end of the oscillatable arm 45. However, since an imperforate area 8| in oneof the odd cards I2 is positioned on the odd cylinder ID for engaging one of the needles I4 for flexing the hook 52 out of the path of the grifi bar 20, at the same time that a perforation 82 in one of the even cards I3 is disposed in alignment with the needle I5 for operating the hook 53 during normal operation, it is thus seen that the weight member 46 will hold the hook portion 41 of the oscillatable lever 45 in a raised position at the time the lip portion 61 of the actuating arm 60 is moved into the vertical plane of the hook portion 41.

Now, in the event the cards l2 and I3 (Figures 5 and 6) do not operate in proper sequence on the cylinders I0 and II a perforation 82 in one of the even cards I3 will be positioned in alignment with the needle l5 for operating the hook 53 immediately prior to a perforation 8B in the odd series of cards I2 being positioned on the odd cylinder ID in alignment with the needle I6 for operating the hook 52. This will result in the hooks 53 and 52 being raised successively to where the lip portion 61 at the upper end of the actuating arm 60 will be moved into the vertical plane of the hook 41 on the end of the oscillatable arm 45 simultaneously with the hook portion 41 being moved downwardly since the even cylinder I I will not have had time to return to the inoperative position shown in Figure 1 before the hook portion 41 on the end of the oscillatable arm 45 in Figure 1 has moved downwardly.

Therefore, upon downward movement of the hook portion "on the end of the oscillatable arm 45, while the lip portion 61 on the actuating arm 60 is disposed in the same vertical plane, the actuating arm 60 will be moved downwardly which will, of course, transmit partial clockwise movement to the pivoted carrier arm 62 thus permitting the corresponding drop-wire 35 to move downwardly into engagement with the contact bar 34 to actuate the conventional loom stop motion in a well known manner to stop the loom.

It is thus seen that, if the cards I2 and I3 alternate out of time after a very few picks by-the loom, a card in each of the series I2 and I3 having the perforations 80 and 82, respectively, therein will follow one another, which means that the hook portion 41 will engage the lip portion 61 in Figure 1 whereupon, as above stated, the loom is stopped. It is thus seen that I have provided a mechanical automatic stop motion operated to stop the loom whenever the cards of either series are not operating in proper sequence and which is actuated after only a very few picks have been woven in the fabric thus avoiding the weaving of an appreciable length of imperfect fabric although the defects may be overlooked by the weaver. It is evident that the cards must be 6' restored to their proper relative positions prior to the loom again being started, since the loom would merely weave, say, twelve picks and would again stop unless the cards had been restored to their proper relative positions.

The terms oscillatable lever, actuating arm and carrier arm are not intended as a limitation, since these members 45, 60 and 62 are all forms of levers and the terms as used are for purposes of differentiating these parts as they appear in the claims.

In the drawings and specification there has been set forth a preferred embodiment of the invention, and although specific terms are employed, they are used in a generic and descriptive sense only, and not for purposes of limitation, the scope of the invention being defined in the claims.

I claim:

1. In a double cylinder jacquard loom including alternately acting odd and even pattern cards, said loom having a hook subject to control by certain cards of the odd card series and a hook subject to control by certain cards of the even card series, and said loom also having a frame and a drop-wire operated stop motion associated therewith for stopping the loom upon any one of the drop-wires being permitted to fall by gravity, an oscillatable lever oscillatably mounted on the loom frame a substantial distance above the drop-wires, an actuating arm whose upper end is disposed adjacent in a lower horizontal plane thanone end of said oscillatable lever and a carrier arm pivotally connected at one end to the loom frame and disposed in a lower horizontal plane than the oscillatable lever, the lower end of the actuating arm being universally connected to a medial portion of the carrier arm, a cord connecting the free end of the carrier arm to one of the drop-wires in said drop-wire actuated stop motion, spring means normally urging the upper end of said actuating arm out of the vertical plane of the hook portion on said oscillatable lever, other spring means normally urging the actuating arm and the carrier arm upwardly, a connection from one of said hooks to the actuating arm and a connection from the other of said hooks to the oscillatable lever whereby upon both of said hooks being lifted simultaneously, the upper end of the actuating arm will be moved into the vertical plane of and engaged by the hook portion on the oscillatable lever and the hook portion on the oscillatable lever will move the actuating arm downwardly to move the carrier arm downwardly correspondingly and to permit the drop-wire connected to the free end thereof to fall, by gravity, thus actuating the drop-wire" stop motion for stopping the loom, certain of the cards in each series having needle perforations therein to control the lifting of the respective hooks and so as to cause the hooks to alternate in being lifted While the cards are in proper sequence but to cause said hooks to operate at substantially the same time when the cards are not in proper sequence.

2. In a double lift double cylinder jacquard loom having alternately acting odd and even pattern cards and also having a drop-wire controlled stop motion and said stop motion being operable to stop the loom in the event of any of the drop-wires moving downwardly by gravity, said loom also having a plurality of hooks subject to control by certain cards of the odd card series and other hooks subject to control by certain cards of the even card series, means normally holding. at; least one; of thedrop-wires in. an

elevated; position,. actuating means. connected to the means: for normally elevating at least one: oi the: drop=wires,means connecting at least one of the hooks subject-toco'ntrol by certaincardsof the even: series with said actuating means for moving said: actuating means. to an operative po-- sition, means responsive to at. least one of the hooks subject to control by certain cards of: the odd. card series for rendering, the actuatingmeansv operable upon said actuating. means being moved try-operative position, certain of the cardsof each series having. needle perforations therein to contro'L the lifting of the. respective hooks, certain. of said: perforations. being provided in certain spaced cards of one series and said certain perforations beingprovided in all; the cards of the other. series except those cards coinciding with said spaced cards in the first series so that when the cards are alternating; in correct. sequence an unperforated card of one series will follov. a perforated card of the other series and whereby, upon the cards alternating out of time, a perforated card of one serieswill follow a perforated card of another series; resulting in the hooks being moved one immediately after the other to thus move the aotu ating meansinto operative position as well as the means for rendering the actuating. means operable at substantially the same time so as to move the means normally holding the drop-wires in elevated position downwardly and to thereby permit the corresponding.drop-wire to fall and to thus actuate the stop motion for stoppin the loom.

3. In. a double lift double cylinder jacquard loom, having alternately acting odd and even pattern cards. provided with. perforations therein and also having a plurality of vertically movable odd and even hooks subject to control by the odd and even cards,v respectively, and. to elevate said hooks in accordance with the perforations in the cards and: said loom also having an arch and a: drop-wire operated stop motion which is rendered operable upon a drop-wire moving downwardly, by gravity, a laterally extending pivoted. carrier arm disposed above the dropwires, pliable means connecting one of the drop-wires to the carrier arm, an actuating arm universally connected intermediate. the ends of the. carrier arm and. extending upwardly therefrom, spring means. normally urging the carrier. arm. out of a normal vertical plane, an oscillatable lever oscillatably' mounted on the arch of the loom. and means on one end of the oscillatable lever for engaging the upper. end of the actuatingarm when the actuating arm is in its. normal vertical. plane and. upon a downward movement of the corresponding end of' the. oscillatable lever, weight means on the end of the oscillatable. lever remote from the end which. is adapted to engage the actuating arm, means connecting. one of the hooks responsive to the odd patternv cards to the end. of. the oscillatable lever adjacent the weight-means and means. connecting the actuating. arm to one of the hooks responsive to the: even pattern cards, certain spaced evenv cards. having a perforationv therein for rendering. operable and lifting the hook to which the actuating. arm is connected for moving the actuatin arm into the vertical plane of the corresponding end of the oscillatable lever,. all the odd cards,. with the exception of certain spaced cards which coincide with said spaced cards in the even series, having perforations therein to cause-the oscillatable arm. to swing. downwardly at its end adjacent the actuating arm= upon each. succeeding odd. card being. moved: into operating position except immediately following movement of. the actuating. arm into-the vertical plane of the oscillatable lever when. thecards' are alternating intrue sequence whereby, upon the cards failing to operate in truese: quence, a perforated. card of the odd series will follow a perforated card of the even series resulting in. the actuating arm being moved into the path of, and then. being engaged by,. the oscillatable' lever. to thus lower the carrier-- arm and thereby cause the drop-wire to fall and to operate the; loom stop motion.

4. In a double cylinder jacquard loom having alternately acting odd and: even pattern cards and also having a drop-wire stop motionfor stopping the loom upon a drop-wire being permitted to fall ,.by gravity, the combination of a spring loaded carrier. arm normally biased so as to assume an elevated position, a pliableuconnection between. the carrier arm and one of the drop-wires, an actuating arm connected to the carrier arm, a lover adapted to, at times, engage: and. lower said actuating arm, means rendering said lever and said actuating, arm independently operable and to effect the lowering of the drop-wire when they are simultane ously rendered active, said means: including said said lever being controlled by one series of cards and said actuating arm being controlled by the other series. of cards and means forv rendering said lever and said actuating arm active, simultaneously, when the cardsare: alternating out of time to move' thelever into engagement-with the actuatingv arm andto lower the carrier arm thereby permitting. the drop-wire to move, by gravity, to actuate the stop motion for stopping the loom.

ALBERT J. BAR'I'SON;

REFERENCES CITED The following references are fileof. this patent:

UNITED STATES PATENTS of" record in the Number

Images