US1439029A - spofeord - Google Patents

Description

Dec. 19, 1922.

. G; E. SPOFFORD.v

CROSS WEAVING LOOM.

4 SHEETS-SHEET 1.

FILED IAN. 5, |922- Dea-19, 1922. 1,439,029.

. G. E. SPOFFORD. Y K

` @Ross wEAvlNG Loom.

D AN. 1922. EEEEEEEEEEEEEEE w Kw1/illu l l VDec. 19, 1922.1 G. E. SPOFFORD.

CROSS YVEAVING LOOM.

4 SHEETS-SHEET 3- FIL`ED IAN- 5,1922.

' lll/lll sin' .fr gliele' @de Freier GEORGE E. SPOFFORD, GELANGLEY,` SOUTH CAROLINA, ASSIGNOR TO DRAPER CORPO- RATION, F HOEEDALE, M .SSACHUSETTS, A CORPORATIGN Q2? MANE.

oRoss-wnavnve Loon.

Application filed January y5, 1922. Serial No. 527,229..

To all fic/m t mmf/concern.'

Be it known that l, Giioiion =E.Srorroin a citizen of' the United States,y residing at Langley, in the eountyfot Aiken and State of South C'aiolinafhave invented `an Im pi'oveinent in Cioss-l/Ve'avigngl Looms,y of lwhich the following description, in connection with the 'accompanying drawinpsiis a speciication, like characters on the drawings reprcsenting like parts. y y

This invention yrelatesto cross weaving' looms whereby certain oit 'the' warp threads drawings ot one' goed` form oif 'means forl carrying it into practical effec'.

ln the drawings Fig. l is a sectional sidezelevation longi- Liidii'ially through a cross weaif'ingloom con-A taininzig'ithe Vpresent invention,y some o'lz ther parts being omitted for clcarness ot'illustration;

Figi'. 2 is a perspective view on an enlarged scale.. showing` more particularly tlle cross weavini;` mechanism and the means 'tor opei'- ating the heddles in thefforniation of the cross-weave etiiect, the doup and-'other heddley details being represented diagrammatically only;

ot the loom for operatingthe lifter and `iuniper heddles; f

Fig. 4t is a side view oi the parts shown by Fig. 3, some ot' the elements being' broken awav-Yto illustrate the `interior constructions; Y f

Fig, 5 is an enlargedperspective detached.

`rew-of one torni ot doup and lifter heddles which may be employedA in connection` with the present invention; and y Fig'. 6 is an enlarged detailishowing.more

paiticularlythe construetionand connection of the lifter/and doup heddles.

T he loom frame l supports the usual crank shaft 2 which `is connected to the lay- 3 for Fig. 23 is an enlarged detached detail show init the rockers., preferably'located at the top `imparting to the lay its well-known beatup.

Mounted upon the loom frame' Vin suitable bearings below the crank shaft `Qis the under or cam shaft fl, Fig. @which movements.

is driven from the crank shaft in the ratio of one to two, that is, the gearing connection between the crank shaft and under or cam shaft 4: edects onejrotation of the under or camshaft upon two completey rotationsy of. the crank shaft; and inasmuch. as the presn ent invention contemplates that certain of the heddles shall be given a two-to-one ino` tion `with relation to other of the heddles, as e kwill presently appear, advantage is taken of.

the relation between the crank and under or cam shaft rto effect such motion of the hejddles.. In the construction illustrated in Figsfl and 2, two doup heddles are shown,' eachassociated with two lifter heddles, but it will' be understood that one doup heddle` and two :lifter heddles'constitutes a unit ofthe cross weaving mechanism. e l v The construction and relation'oiy the doup and lifteiheddles for controlling .the doup warp thread of a unit Ais shown Figs.' 5 and 6, but thisr feature constitutes'no essential part of Athe present invention, and ,is 'illustrated tor the purpose of making` clear that the doup thread is operated on each 'shed forn'iationto place the doup threadin thef same plane of the shed. .The consti" ction shown byl Figs 5 and jconstitutes a convenient and effective arrangement of' the doup andliiter heddles, butother forms 'of such doup and litter heddlcs may he einployed within the true scope of the present invention. y

AThe doup heddle 5v Figsf and 6, is constitutedv withA two leg portions 6," one of which passes through. an opening 7 in one litter heddle 8, while the other passesl through a similar opening` 9 kin the other lifter heddle l0. The doup heddlo. 5 has the I yeye 11 through which thedoup thread. al

passes.

The legs 6 of the doup heddle o extend downwardly and aie connectedat theirlower ends by the'bars l2, which are normally held downwardly by the yokes 13,r to thev lower end of which a" spring 14C is secured, the confv structionbein-g such that the doup hed-idle i v5 is normally and-yieldingly held depressed. y

The lifter heddles 8 and 10f zreconnected,

,to their respective he'ddle frames" 15 by they hooked upper and lower portions` i6, the construction beingl such that when either oi" the heddlc trames l5 and its connected litting heddle S or l() is moved upwardly, in the present iiistai'ice, the doup heddle 5, one leg ol which passes'through the opening 7 in the lifter heddles, will be raised and peritorce the doup thread a which passes through the eyell of the doup heddle, will likewise be raised and consequently always be placed in the same line or plane of the shed in successive shed VJforn'iations.` Suitable springs 1.7 Fig. 2,k are connected .to the lower. portion ot each lifting heddle frame to normally depress the connected heddle frame.

Each doup thread a has associated with it a jumper thread Z) which passes between the two lifter heddles 8 and l0. and throughthe eye 1S ot a jumper heddle 19 which is mounted in the jumper heddle frame. 20, Fig. 2. 'lhe jumper heddle 4.traine 2G and the j umper heddleslf) carried by the frame are preterably mounted rearwardly of' the lifting heddle trames, as indicated in Fig. 2.

The loom frame supports one or more Warp beams 2l, Fig. 2, on which are wound the doup and jumper warp threads. The doup and jumper warp threads pass from the source of supply over the whip-roll 22, Fig. 2, and over and under the lease lrods 23, from which they extend forwardly toward the front ot the loom. All of the doup threads a, Figs. 1 and 2, pass under an evener bar 2d which is guided for movement by .guides 25 secured to the loom frame, and is normally under the control of a spring 26, one preferably being connected to the evener bar near each end thereof.' The evener bar 2a, therefore, is above the doup threads and normally rests upon the doup threads under the yielding` influence ot' the spring `26 to thereby even up the doup thread during the cross weavingoperation. From the evener bar 24, each doup thread a passes through an eye l1 of one ot the doup heddles, as clearly indicated in Fig. 5, and then the doup thread leads through the usual reed carried by the lay. The associated jumper warp thread passes from the warp beam over and under the lease rodsl 23 and through the eye i8 of the jumper heddle 19 and then between the two litter heddles 8 and l0, whence it extends trontwardly through the. same dent of the reed `with its associated doup thread.

Freni the construction thus tar described it will be clear that when the shed is closed, that is. when the doup and jumper warp threads are in substantially the same plane, if one of `the litter heddles be raised, and the jumper'heddle be lowered, the doup thread a. willbe passed at one side oi the jumper thread in the shed format-ion and that all the doup threads will be in one plane of the shed. while all the jumper threads will be in the ,stance the connection between the arm )2 5 other plane ol the shed. Similarly, when the other litter heddle is raised Vtrom the closed shed position, it will raise the doup heddle aud with it the doup thread, to the opposite side ot the jumper thread and the jumper threads may be then lowered to torni the lower plane ol.t the shed. Thus in each successive shed formation, the liti'ter lieddles alternately raise the doup heddle anifl the associated doup thread irst at one and then at the opposite side of the jumper thread `and place it in the same plane o'tthe shed on each shed formation; while the jumper thread is raised to the plane ot the closed shed and then depressed to complete the shed, on each shed formation. ln other words, every time the shed is formed, the doup threads are moved into the saine shed plane on each formation, and the jumper thread is moved into the otherl shed plane, the doup thread being passed alternately back and forth across the jumper thread.

To impart the alternate movements 'to the lifting heddles and the two-to-one movement of the jumper heddle, the present invention provides a connection between the under or cam shatt for operating the litting heddles and a connection to the crank shaft for operating the jumper heddle, one

the other of which is operated from the 1 crank shaft and is connected to the jumper ieddle, with the result that the jumper hed` dle is given an up-and-down movement of the lifting heddles.

:Xs shown in the present form ot' the invention, the loom arch 27 has extending upwardly therefrom the brackets 28 and 29, which carry the dead or stud shaft 30. Mounted for rocking movement on the dead shaft 3() is the Vrocker 3l which may be conveniently formed as a cylinder, Figs. and 4. Secured; to the rocker 3l is an arm 32 pvotally connected at 33 to the upper end portion of a rod 34. ln the present inand the rod Ivlis termed by the yokcs andl 36, flexibly connected by the piu 2li' in order to prevent binding ol' parts due to the difference. in the directional movements that may occur between the rod il and the arm 32 during the loom operation. The rod 34 'is connected in a similar manner by the yokes 3S and 39 to a crank arme() secured to the lower or cam shafta, Fig. 2. The rocker 3l is connected to the lifting heddle frame, when one is used, or to the two lifting heddle trames l5 in the present form oit the invention, by means of the straps or llO flexible elements il which may be suitably guided abore their points of attachment toy the lifting heddle frames by the guides 4:2, supported by the loom arch. rfhe connectingelements between thel rocker y3l and the f lifter heddle frames may be variouslyv formed, but the rcharacter of the connection herein shown isfoundtobe advantageous in practical operation,y the construction being such that upon rocking'movementv4 of the rocker Blone yof the liftingheddles 15y will be raised and the other will be lowered.

The jumper heddle`20, in the present in vention, is torhave a two-toone motion `as compared with the associated liftingheddle, and is shown as connected through-a rocker to the crank or main shaft 21of the loom.

Loosely mountedon the stud shaft() is the second rockerfet to which is secured an arm 41A- adjustably `connected at its "outer end at 45 with the operating` rod 46H The construction between the Qopenziting rod lo and the arm #la is preferably fornied by the vokes 47, and 4S, pivotally connected gat a9. in a manner similar to the yokes 35 andBG, hereinloeforedescribed.l The rocker 418 has adjustably connected thereto, the segmento() to which is secured thejumper heddle operating connection 5l.t k n y rlhe rod- 46 at its lower end is connected to the crankarm 52 secured to thejniaink or crank shaft by the yokes 53 and 54 pivotally connected at, the construction being-` such that upon each rotation `of the crank shaft the jumper heddle willbe raised and lowered; and since the lower or cam shaft makes one revolution to each two revolu` tions of the crank shaft, it-followsthat upon each rise'and fall ofthe jumper heddle one of the lifter heddles will be raised. the construction described it will` be apparent that on each shed' formations the jumpep thread will always appear` inthe same shed plane and thatthe doup thread willalways appearin the opposite shed plane.`

It sometimes `isfdesirable thatthefabric being` woven with the cross weave or marquisette effect vhave ai plain or otherform. of woven v selvage. vention provides selvapje heddles and selva-ge thread spools, and where the'selvage threads are to be alteri'iately raised and lowered, as

shown in the present instance.the selva'ge heddles.y two `of which are shown. are connected for yalternate movement to the rocker 3l hereinbefore described.

rlhe selvag'e threads are carried by spools or beams 56 supported upon arms 57e tending` from the loom arch, and a friction let-off formed by a band 58 passing" around a rim of theselvage spool and connected to a. spring 59 maintains the selvage threads o leading from the selvage spools under proper tension. around the whip-roll 22 at each side ofthe l? rom To this end the present in The selvage threads passy loom, and thence pass to and through respective heddles carried bv the heddle frames GO, one of which is shown up and thev other down, in Fig. 2. y

it/That is claimed is l. ln a cross-weaving` loom, the combinag tion of the crank shaft. an under or cam shaft makingi a single revolution to each two `iievolutions of the crank shaft, a doup heddle for controlling` a doup thread, two lifter heddles for alternately-operatino the doup heddle 'for placing the doup thread in the same plane of the shed on each shed forma tion, a` jumper heddle for controlling` a jumper thread andplacing` it in the same shed plane on successive shed formations, connections between the lifter h'eddles and 'under or cam shaft. for operating the lifter heddles, and connections between the crank shaft and jumper heddle 'forxoperating the jumper heddle two-to-one relative to the lifter heddles.

2. In a cross-weaving` loom, the combination of the crank shaft, an under or cam shaft making` a single revolution to each two revolutions of the crankshaft, a. doup heddle `for controlling a v`doup thread, two vlifter heddles for alternately operating the doup heddle` for placing the doup thread in the same plane ofthe shed on each shed formation, a jumper heddle for controlling a jumper thread and placing itin the same shed plane on successive' shed formations, connections between. the lifter heddles and under or cam shaft foroperatingthe lifter heddles, connections for operating `the jumper. heddle t'wo-to-one relative to thef lifter heddles, and

a springi controlled evener bar resting' upon the doup threads.

3. In a cross-weaving' loom, the combina- Y tion-of the crank shaft, an under shaft, a doup heddle for controllinga 'doup thread,

two lifter heddles for alternately operating` the doup heddle, a jumper vheddle for controlling a* jumper thread. connections `bej tween the lifter heddles and under shaft including' la crank for operatingV the lifter vheddles,"and connections between the ljumper heddles and crank shaft for operato@` the jumper heddles twotoonerelative to the doup heddles.

4L. In a cross-weaving loom, the combination of a doup heddle for controlling adoup thread, two lifter heddles for alternately operating the doup heddle to place the doup nation of a doup heddie for controlling ay doup thread, two lifter heddles for alternately operating the doup heddle to place the doup thread in the same sued plane on successive shed formations, a jumper heddie for col'itrollingj a jumper thread and j )laeingit inthe saine shed plane on suocessive shed formations, selvage heddles for controllingselvagge threads connected with the under or crank shaft of the loom and the lifter heddles and also With the seh/"age heddles for operatingl them, and conneetions with the crank shaft and urnper heddle for operatingthe jumper to-one relative to the lifter and dles.

6. In a crosseiveaving loom, the eombination of a doup heddle for controlling` a doup thread, two lifting` heddles for alternately operating` the doup heddle toplace the doup thread in the same plane of `the shed on each shed formation, jumper heddle for controlling the jumper thread and moving it into the saine shed plane upon successive shed formations, an evener har above the doup thread, and yielding means acting upon the ev'ener bar for evening up the doup threads.

7. In a crossover-ving loom, the combination of a. doup heddle for controlling a doup thread, two lifting,` heddles for alternately operating' the doup heddle to place the doup thread in the same plane of the shed on each shed formation, a jumper heddle for controlling the jumper thread and moving; it into the same shed plane upon successive shed formations, an evener har above the doup thread, and a spring normally acting to depress the evener har upon the doup threads.

S. ln a cross-Weaving` loom, the eombination of a doup heddle and tivo controlling lifter heddles for alternately lifting the doup heddle and the doup thread to the upper plane of the shed on successive shed formations, a jumper heddle for moving the jumper thread to the lower plane of the shed selvagge hedon successive shed formations, an evener bar located above the doup threads back of the heddles and a spring; for causingthe eif'ener bar to vieldingly bear upon the doup threads.

9. ,A oross-WeavngI loom having a doup thread evening;- har Whieh rests'upon the doup threads and movable in one direcheddle twoflasheo tion by the dou p threads during the forination of a shed, and a spring acting yielding ly upon the erener bar in the opposite direc-tion.

10. In a cross-Weaving` loom havirre a warp beam supply for doup and jumper Warp threads, a separate supply for selva-ge threads, a spring operated evener bar acting,` upon the doup warp threads, heddles for separately controlling the doup, jumper, and selvage Warp threads, connections with the under or cam shaft for operating the doup and selvagge heddles, and connections with the crank shaft for operating4 the jumper heddle tivo-to-one relative to the doup and selvage heddles. `i 1l. In a cross-Weaving loom, the combination of a doup heddle, twoglifting heddles for alternately lifting),` the doup heddle to the upper plane of the shed on each shed formation, a jumper heddle, a crank oonneeted to the under or cam. shaft for operating` the lifter heddles to place the doup thread in the upper plane'of the shed on each shed formation, and a Crank connected to the cranlr shaft for operating the jumper heddle.

l2. ln a cross-rvezmfing` loornhavinga Warp beam supply for doup and jumper Warp threads, a separate supply for selvagge Warp threads, a Whip roll about Which the CII doup, jumper, and selvaggey warp; threads pass` a spring controlled evener bar folr evening' the doup threads, and heddles forand lifter heddles operated from. the under or cam shaft for operatingv the lifter heddles, and a second rocker connected to the jumper heddle and era-nk shaft of the loom for operating' the jumper heddle two to one relative to the lifter heddle.

In testimony whereof, l have/signed lily name to this specification.

GEORGE E. 'SPOFFORD

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