Jan. 7, 1947. ‘ J, ROBINSON 2,413,728 COMPENSATOR Original Filed June 26, 1942 i I 16' “12a / 33 34 INVENTOR ’ Jonas Robinson, 'BY' ATTORNEYS 2,413,728 Patented Jan. 7, 1947 UNITED STATES PATENT OFFICE 2,413,728 COMPENSATOR v _ Jonas Robinson, Clarke Summit, Pa. ’ Original application June 26, 71942, Serial No. 448,527, now Patent No. 2,386,574, dated Octo her 9,, 1945. Divided and this application De cember 23, 1944, Serial No. 569,558 4 Claims. (01. 87-—14) 2 provision of automatically operable compensat~ ‘ This invention relates to pattern-controlling means and refers, more particularly, to means connecting a jacquard with heddles, jacks, pick ers or other thread-controlling elements of a loom or'textile machine. v This application is a division of my co-pending ing means interposed between the jacquard and the elements operated thereby. ‘ ' Other objects of the present invention will be come apparent in the course of the following - speci?cation. In accomplishing the objects of the present in vention, it was found desirable to insert into the 26, 1942. " ‘ line of each individual connecting string a metal As iswell known, jacquards are utilized for element or equalizer which speci?cally com en~ 10 the selective operation of heddles carrying the sates against shrinkage or stretch of the string warp-threads in the case of a loom or the corre~ occasioned by humidity changes. ri‘he element sponding' jacks or pickers in case of acurtain is preferably located fairly close to therlower ex“ machine or Nottingham lace machine, to deter tremity of the string, namely, close to the mine the pattern of fabric produced on the loom loom ,or machine and ‘is so shaped and placed in patent application, Serial No. 448,527, ?led June or machine. For that purpose, the heddles or jacks are all individually connected by a series of strings or cords withthe lifters, hooks or needles of the jacquard. The number of strings‘ is equal to that of the heddles or jacks and is quite great. The jacquard is mounted, of necessity, high above the loom or machine frame, the length of the such manner as to compensate for and absorb all expansion and contraction of the string from its upper extremity at the‘ jacquard to the pointof contact, with the element. This may be accom— plished by allowing the element to carry out a movement which-is different from the movement of the string actuated by the jacquard. The strings or cords extending between the jacquard string movement and said different movement and the heddles or jacks being often from 20 to of the element are so combined and/or correlated 25 feet. that as soon as action is'transmitted by the jac It was found that these very long strings and 25 quard, the element will be able to manipulate its cords change in length with each change of the jack or heddle in the required manner irrespec weather and its accompanying change of mois tive ‘of any extensions‘ or contractions of the ture content in the atmosphere. This change of length of string shows at its lower extremity Thus‘, in accordance with the present invention, which is the jack. A string may extend during 30 one continuous string, the length of which is con dry weather to such an extent that the opera‘ stant and whose sole function is to exert a pull tion of the jacquard will not result in the with on the jack to an extent equal to the amount of drawal of a jack or heddle, or a string may con‘ lift that the jacquard calls for, is replaced by a tract during a period of great humidity so much connection consisting of the top string, an equal35 that the jack or heddle will remain withdrawn izer and the bottom string. The equalizer per despite the operations of the jacquard. As the forms the following two functions: » string. string varies in length the jack moves fromyits ‘ regulated position either to‘ a position too far forward in a dry atmosphere or too far back in a moist atmosphere in relation to the spool thread. In either case, it means a fault in the pattern v _ ' Firstly, it serves as a connecting link between the top and the bottom strings and transforms the lift of the jacquardinto the pull on the jack, just as though there ‘were one continuous string.‘ Secondly, it is so constructed that automati~ of the lace. Constant attention and frequent cally it can neutralize the eifect of humidity on adjustments are necessary to prevent those faults. the string, 1. e. the‘ change in the length of the It is among the important objects of the present 45 top string, and thus still transmit to the jack‘ the invention to control the effects of changes in entire pull of the jacquard. , weather conditions on the expansion andnon According to some of the preferred embodi traction of jacquard harness strings and cords. Another object is to provide’ acompensating ments of the'inventive idea,‘th_e element, which breaks up the continuity of the fabric string, may device which will insure proper operation of the have the form of a-‘plate, and may carry out a heddles and jacks by a=jacquard irrespective of 50 pulling movement, as well as a swinging move the contraction or extension ofthe connecting _ ment. The swinging movement may be produced v strings and cords. - ' ~ by an external force and may be transmitted to A‘further object is to eliminate the necessity the jack or heddle; in that case the pulling move for constant attention and frequent adjustments ment is the one received by the elements from 55 of the jacquard connecting means through the 2,413,728 3 the string. On the other hand, the swinging movement may be caused by a guide forming a part of the plate and may constitute a component 4 Thus each jack is controlled separately from the jacquard by means of a pulling movement of a string or harness. of the string movement, while another compo~ nent is transmitted by the plate to the jack or heddle; this construction may be used for vary ing the lift of a jack or heddle and/or operat In operation, bobbins l9 reciprocate in the direction of the arrow 30 (Fig. 1) by being thrown between the separated threads, whilethe bars 23 and 24 reciprocate in the direction of their ing a jack or heddle from a plurality of jac quards. lengths. There is one warp thread for each gauge of the machine. The warp bar 23 moves The portion of string below the equalizer, 10 all of the warp threads 2| in unison and has a while still being subject to changes in length side motion to allow the bobbin [9 to pass on through weather conditions, is soyshort that any each side of the Warp threads forward and back slight change in length due to weather changes and around it to tie it and hold the spool threads would be negligible and its effects would not be in position as they are built up to form a pat noticeable on the woven fabric. 15 tern.. The jack bar 26 carries out a reciproca The invention will appear more clearly from tory turning movement and moves the jacks 25 the followingdetailed description when taken to the withdrawn position shown by broken lines in connection with the accompanying drawing ' in Figures 1 and 7. At that ‘time some of the showing, by way of example only, some of the needles of the jacquard 16 are operated. preferred embodiments of the inventive idea. 20 The function of the jacks is to hold certain In the drawing:_ of the spool threads from the side motion. Those Figure 1 is a diagrammatic side view illustrat spool threads that are not held make the side ing the use of pattern-controlling means which motion, are picked up into position bya set of are constructed in accordance with the present points and tied to the warp, and in this manner invention, in a Nottingham lace curtain ma 25 build up the pattern motion by motion. As already stated, in prior art the strings 28 Figure 2 is a partial top view along the line chine. ' 2—2 of Figure 1. - - ' _ were directly actuated by the jacquard needles, which pulled-them taut. Therefore, when the ~ Figure 3 shows a compensating plate in side jack bar 26 moved back to the normal position indicated by full lines in the drawing, some of the resilient jacks 25 were maintained in the withdrawn broken-line position by their taut strings 28, and remained out of engagement with the threads 2i and 22 during the movement of elevation, Figure 4 is a perspective view of a somewhat different compensating plate. Figure 1 of the drawing illustrates diagram matically a Nottingham lace curtain machine [5, a jacquard l6 and a compensating or equalizing 35 the bars 23 and 213, until-the jacquard needles deice I'l. released the strings and the resilient jacks sprang While Nottingham lace curtain machines are back to their normal position. 7 ~ shown‘ in the drawing in conjunction with the The pattern of a fabric depends upon the posi tions of the jacks 25 in relation to the threads compensating devices, such devices maybe con veniently used with any other type of textile machine, such as a loom or a curtain machine of 40 21 and 22, said positions being determined by . the needles of the jacquard l6 and the strings The Nottingham lace curtain machine 15 is of standard construction and is shown merely in the form of a diagram in Figure l. The machine comprises carriages l8 carrying disc-like bobbins I9. Bobbins I9 carry tying threads 28 and are separately, through the medium of a pattern made of punched cards. Strings 28 may main tain the jacks 25 in full lift position, or a half lift position in which the tip of a jack is located any type. thrown between warp threads 2| and spool or patterning threads 22. There is one bobbin for every warp thread. Each bobbin I9 is ?at and contained in a carriage; it travels through the‘ threads at right angles to the line of threads, forward and back at each motion of the ma chine, twisting around the threads and holding them into a lace fabric‘. Warp threads 2| ex tend through uniformly spaced openings 'ofa warp bar or guide bar 23 and form a background of tightly held threads. Spool threads 22 extend through similar openings of a spool bar or guide 'bar 26. There is a spool thread for each warp thread. The bar 24 has a side motion which 0 allows each thread to be built up, motion by mo tion, into a pattern. Jacks 25 are carried by a jack bar 26 and are adapted to project between a pair of warp and spool threads. The jacks con sist of. steel wires arranged side by side across 65 the mahine, one jack for each warp thread; they move through the threads from back to front. The tips of the jacks are regulated in a straight line directly behind the line ‘of spool threads. 28 operated thereby. Each jack is controlled between the two bars. i The described operation of a Nottingham lace curtain machine is well known and does not constitute a part of the present invention which is concerned with means transmitting the move ment of the needles of a jacquard [6 through the strings 2'8 for the purpose of maintaining some of the jacks 25 in the withdrawn positions. As already ‘stated, the strings between.v the jacquard and the jacks may be as long as'f20 or 25 feet, while the full path, of movement of the 2 upper end of a jack for a full lift is about‘ one inch. It is apparent that variations, in atmos pherichumidity willcause the strings to contract or expand. The variation in the length is prob-_ ably ?ve-eighths of an inch during a change of weather from complete saturation. of moisture to complete dryness in the atmosphere. The change ‘from day to day may be from one-eighth to one-quarter of an inch. If the strings con tract too much,.they may prevent‘ the jacksv from assuming their normal forward position, so that the jacks will remain. in the half lift or full lift positions despite ‘the release of the strings by the Each jack 25 is provided with a curved portion 70 needles of the jacquard. On the other hand, if 21 to which an end of a string 28 is attached. the strings expand too‘ much, a jack maybe In prior art, ‘strings 28 extended over sley ‘bars returned to a half lift or forward position despite directly to a jacquard l6, making a right angle the movement of the corresponding needle of turn at a point about two feet from the jack. 75 the jacquard to the full lift position. In either £413,728 5. event, the correct transmission of the pattern from jacquard to cloth is prevented. - In accordance with the present invention, the expansion and contraction of the harness strings is automatically compensated by a compensator or equalizer ll (Figures 1, 2 and 3). The func tion of the equalizer is to so control the length of the strings that a straight ‘line of jackswill be maintained in the same position in all condij tions of weather changes. Thus the equalizer separates the top and bottom strings. The compensator Ill comprises a plurality of thinmetal plates 33, the number of the plates being equal‘ to that of the jacks. For example, in. the case of a six-point machine; there are six plates side by side for each inch across the ma chine. Each plate 33 is attached by a separate bottom string-28 to a separate jack 25, soas to make a horizontal pull on the jack.- The plates 33 extend in vertical rows and are separated from upon the size of the projections 41, and the latter are so dimensioned, that when a plate 33 is in its lowermost position of rest, the tip 53 of the bar 46 moves not far from the line 38 of Fig ure 3 and in its extreme forward position is situated beyond an extension of the line 553 but at a distance from the edge 5!. When a plate 33 is pulled upwardly, by a string I28, the tip 53 of the bar will move in the vicinity of the line 39 of Figure 3 and will strike the plate 33 at about the point 54 of the edge as, since the edge to is further forward than the edge 5 l. The bar ill will swing the plate 33 and at ?rst one edge of the plate 33 will engage the wall 35. whereupon the plate 33 will be pressed in its entirety against the wall 35. Obviously, the strinr 28 will be stretched taut during this movement of the plate 33 and if, at that time the jack bar 26 swings‘ forward, the'string 28 willretain its pack 25 in the withdrawn position. eachother by partitions 35 which are attached to a wall 3-5. during which the bar All exerts its pressure against the edge 50 of a plate 33 coincides ap proximately with the time period during which the corresponding needle of the jacquard H3 exerts its pulling force upon the string E28, these time periods being su?icient to maintain the jack 25 out of engagement with the threads 2i and 22 during a back-and-iorth movement of the forward edge of the plate 33, which ,faces the machine It, consists of a vertical bottom portion 59 and an upper vertical portion 55 joined by a horizontal portion 52, the plate being wider atv - _ bars 23 and 24. Each plate 33 is connected at 3? by a separate top string I28 with a separate actuating needle stances cause an expansion or extension of the (not shown) of the jacquard it. The strings I23 long string I28, then this string will be more slaclr between the jacquard I5 and the plate and the plate 33 will hang lower. Then the point of contact between the tip 53 of the bar 49 and the edge 59 of the plate 33 in the full lift position of the loom, such as heddles or dobbies; itis a part of and controls each individual string and each individual string must be equipped with normal of the plate location will be 54 shifted‘upwardly and toward the from edge 52. However, so long as the tip 53 can strike the edge _ 59, the expansion of the string l23 will not in ?uence the action of the plate 33 upon the string 23 and the jack connected therewith. If the string I28 is contracted by atmospheric conditions, the plate 33 will move upwardlmbut - It is thus apparent that according to the pres ent invention, the single string of prior art con structions is separated. close to the textile ma? chine into two strings 23 and ma and a com pensating plate is connected to both strings. The jacquard needle exerts an upward pull upon the string [238 and the plate 33 connected therewith. When the string l28 is of normal length, the extent of the upward movement of the plate 33 is represented by the distance be tween the lines 38 and 39 in Figure 3. As already stated, this upward, movement of the string 523 and of the plate 33 is caused by a jacquard needle when for pattern purposes the corresponding jack 25 should be retained in the rearward or lift position. The upward movement of a plate 33 is trans mitted to the corresponding string 28 by an oscile ' latory mechanism comprising an elongated shogging bar 40 which is carried by leversv 4i mounted upon .a pivot 42.’ The levers M carry cam followers 43 engaging cams ‘M which are rotatable along with a driving shaft d5 and which are provided with circular surfaces 45 and pro jections él. Springs 48 maintain the cam fol~ ' g If atmospheric conditions or other circum extend upwardly and are very long, While the strings 28 are quite short and extend substan tially horizontally. The plate 33 does not con trol or come in contact with the machinery parts one plate. . rotation are so selected that the time interval The strings 28 are attached to ears 3.5 situated at the bottom of the plates 33. The plates are located on the level with the jacks to make a right angle turn in the strings. The the bottom than at the top. ' The position of the'ca-m M and the speed of its its operation will not be a?ected so long as the tip 53 of the bar All can swing above the edge 52 in the non-lifting position of the plate. 50 It is apparent that in accordance with the present invention, the continuous length of string, whose single function is to pull and hold pulling the jackunit in composed its position, of the hastop been string, changed the equal; to izer and the bottom string. The equalizer compensates equally well either in case of a gradual slow change in weather con» ditions, or in case of a sudden violent change, and maintains at all conditions of the weather the same relative position of the jack at its point of contact with the lace in the making. _ Figure 4 showsa plate [33 which may be used to maintain the jack connected thereto not only in the non-lifting and full lift positions, but in" the half lift position as well. - Forthat urpose, the front edge of the plate [33 has three vertical lowers 43in engagement with the cams 45. portions 56, 63 ‘and 6| and two horizontal pore It is apparent that when a projection M en tions 52 and 6:3. The jack remains in the non gages the cam follower 43, the lever M is swung toward the plate 33. As soon as theprojection 70 lifting forwardposition so long as the shogging bar moves above the horizontal edge 64. The jack 4'! is moved’ beyond the cam follower, the spring is maintained in a half lift position when the 138 pulls back the lever 4!, so that the lever 4! plate is somewhat moved by the shogging bar and the bar 40 connected therewith carry out after the bar engages the edge 63. The jack is an oscillatory or swinging movement. The length of movement of the bar 4!] depends 75 maintained in its full lift position when the plate 2,413,728 is moved to its full extent by the shogging bar which engages the edge 60 of the plate. ' It is apparent that the string I28 may expand or contract within wide limits without interfer ing with the action of the plate I33. It was found that normal atmospheric varia tions may cause a variation of up to one inch in the length of a string I28, the operative extent of which may range between 16 and 20 feet. The plates 33 and I33 must be constructed so as to be able to compensate for this variation. It is apparent that the described equalizers are designed so that they will work in connection with the jacquard harness string automatically and by gravity for the control of the weather con ditions so far as they a?ect a lace machine or other jacquard machines in the transferring of the pattern from the jacquard to the woven fabric. The action of the equalizers is not on some part of the machine or loom, such as heddles ' or dobbies, but is directly on the individual strings, a?ecting only the strings themselves. The equalizers are so designed and placed as to neutralize the variations in length of the long top strings occasioned by the changes in relative 8. 2. In a device connecting a pulling element of a jacquard with a thread-actuating element of a, textile machine, an elongated connecting element having one end connected to said pulling element, another connecting element having one end con— nected to said thread-actuating element, a plate connected to the two connecting elements and so located in relation thereto that a raising and lowering of said pulling element is transmitted 10 by the ?rst-mentioned connecting element to said plate but is not transformed into a, pulling move ment of the second-mentioned connecting ele ment, and means reciprocating in a direction substantially transverse to the direction of the raising and lowering of said plate and engaging said plate when it is in the raised position to move the raised plate along with the second-men tioned connecting element, whereby the second-' mentioned connecting element carries out a pull ing movement, said means being adapted to en gage said plate in a plurality of places to com pensate for an extension or contraction of the ?rst-mentioned connecting element. 3. A device for compensating for the extension and contraction of an elongated connecting ele humidity; they do not have any control over the ment extending between an actuating element changes in length of the bottom strings occur and an actuated element, said device comprising ring from-a similar cause. However, the top string a plate suspended by its top from said connect is such a large percentage of the total length and ing element and having a narrower top portion‘ the bottom string such a small percentage of the 30 and a wider base portion, whereby said plate is total length that the variations in length of the raised and lowered by a movement of said actuat bottom string are not of a serious consequence. ing element'which is transmitted to said connect It is apparent that the speci?c illustrations ing element, reciprocating means engaging the shown above have been given by way of illus base portion of said plate when the plate is in tration and not by way of limitation and that the 35 the raised position and swinging said plate, and described methods and devices are subject to wide another connecting element connected to said variation and modi?cation, without departing plate and said actuated element and transform from the scope or intent of the present invention; ing solely said swinging movement of the plate all of such variations and modi?cations are to be into a pulling movement of the second-mentioned included within the scope of the present inven 40 connecting element, said means being adapted to tion. ‘ engage said plate in a plurality of places to com What is claimed is: pensate for an extension or contraction of the 1. In combination with a textile machine of the type having a plurality of thread-actuating elements and a jacquard having pulling elements for operating said thread-actuating elements, and elongated connecting elements having ends at tached to said pulling elements; a device for com pensating for the expansion and contraction of said connecting elements, said device comprising ' other connecting elements connected to said thread-actuating elementsand plates connected to the ?rst-mentioned connecting ‘elements and ?rst-mentioned connecting element. 4. In textile machinery, a device for compen sating for the extension and contraction of an elongated connecting element extending between an actuating element of a jacquard and an actu ated thread-operating element of a textile ma chine, said device comprising a plate suspended by its top from said connecting element and hav ing a narrower top portion and a wider base por tion, whereby said plate is raised and lowered by a movement of said actuating element which is the second-mentioned connecting elements, said transmitted to said connecting element, a shog plates and said second-mentioned connecting 55 ging bar, and means reciprocating said shogging elements being so located in relation to the ?rst bar close to said plate, the tip of said shogging mentioned connecting elements that a reciproca bar moving above the base portion of said plate, tion of a pulling element is transmitted by a ?rst~ said shogging bar being devoid of engagement mentioned connecting element to a plate, but is with said plate in the lowered position of the lat-‘ not transformed into a pulling movement of the 60 ter and striking the base portion of said plate second-mentioned connecting element connected when the plate is in the raised position and swing to the plate, and means engaging said plates ing said plate, and another connecting element when they are in raised positions to move such connected to said plate and said actuated ele-v ment and’ transforming solely said swinging raised plates along with the second-mentioned movement of the plate'into a pulling movement connecting elements, connected to said raised of the second-mentioned connecting element, said plates, and thereby to cause such second~men~ shogging bar being adapted to strike said plate tioned connecting elements to carry out pulling in a plurality of places to compensate for an ex-, movements, said means being adapted to engage said plates in a plurality of places to compensate tension or contraction of the ?rst-mentioned for an extension or contraction of the ?rst-men 70 connecting element. tioned connecting elements. ' JONAS ROBINSON.