US1543045A - Leno loom - Google Patents

Description

June 23, 1925.

J. SA BACHMAN 'ET AL LENG LOOM Filed Jan. 14. 1924 2 Sheets-Sheet l IN V EN TOR S MW S M l, W, W

A TTORNE YS June 23, 1.925. 1,543,045

J. S. BACHMAN ET AL f LENG LOOM Filed Jan, 14, 1924 2 Sheets-Sheet 2 INVENTOR J 33am/707m A TTORNE YS Patented .lime 23, 1925.

IITE D TS T-,ATES

JOHN sNELGnowf-BACHMAN, SIDNEYARTHUR ivioiimnivi) STARLING ciia'is'rornn LEWIS. or aoMneEoiaGiA. l n

LENO LOOM.

iippiicationvfnea January. i4, 1924. sei-iai-nacse-,oea

To all 107mm t may concern.'

Be it known that we, JOHN "SNnLGRow BACHMAN, SIDNEY ARTHUR MOAK, randl STARLiNG Ciinis'roriin Lnwis, citizens ofthe United States, .and residents of Romain.

ly shifting certain. of tlieliea'lds whereby j certain ofthe Warp threadsare twisted with other warp threads for-locking. thepicks in position, the 'locking ofl the picks inl the socalled .knit yfabric/being essential 'in View of the loose lweave.

A further object ofzthe invention is the provision of a device adapted to be attached to al plain or common.twoeliarness loom forv laterally: shifting certain of the yliealds while permitting a vertical oscillation of the same whereby leno-tubing is.' formed,I4 the remainingl healds being maintained stationaryV to supportaslied of warp threads in .stationary position.

This .invention `will be-'best understood from a .consideration of the following detailed description, in view of the accompaiiying drawing :forming a part of the specification; nevertheless it. is to be understood that the invention is not confined to the disclosure, being' susceptible i of lsuch changes and niodicationswhich shall define no .material departure Afrom the salient. features ofthe .invention Vas eXpressedfin the appended claims.

In the drawings:

Figure 1 is :a4 view in perspective of 'a two-harness loom-showing our invention applied for laterally `shiftinga pair Iofthe liealds. I

Figure 2 is a view in perspective looking towardsv the 'rear kof the `machine disclosing oscillating mechanism for certain of the healds.

Figure 3 is a section through thevertical diameter of the operating gear for the shifting mechanism.

Figure et is a view in perspective of a leno locmshowing our attachment applied in operative position with thesame.

-Beferring more particularly tothe drawings, 1- designates `Ia frame vof a loomliavfing a camshaft 2mouiited inlbearings on f the frame and driven in .anyap-proved manner. The Vouter projecting end oftlie shaft 'is' provided withfa. spur gear 3 having acolf Alar f4 integrally .formed:.tlierewitli. screw 5 locks the collar'and likewise the e tol the shaft- 2.

A set gear ln mesh with the gear Bris a spur gear 6, the ratio of the gear 6 to the gear B being witlra stud 8 'disposed -eccentrically with res/Dect to theY Shaft 7. v'llhestudLS1-islad` justable in aslot 9Min the ,gearJGand .isprovided with ahead 11 aiidxan annularrshoulder 12spaced. from therhead witlitheshouldery in engagement with` the. face lofthe gear 6. The outer end of the stud is threaded and engaged bya nut 13 for. securing the stud ina predetermined position within the 65 Gear isimounted on astudc shaft 7 yconnected to the `iframe 1 land isprovided slot ISand awnut 141locksthe'nut 13: against displacement. l Afveitically disposed oscillating rodl has its -lower end. enlargedtandslottedw'as shown at -1'6- Vto :receive the cra-nk `pin i or stud '8 ywith the enlarged portio'n'ieceived between the head and thevshoulder 12 of said stud. VThe upper end yof the. rod 151is :connected -byineans of a= turn-buckle 17 to an2. a=lined reciprocating rod'lS.

The rod 15 is maintained in position when reciprocating by means of a slotted lbracket 19-secured to one -side wallr of the frame while rod 18 lissimilarly `maintained in position by means of a slottedxbracketf20 like Wise secured to theI side wall of thefframe 1 and in alinement with thebracket. 19. The.

upper end of the rod 18fisfpivotally connectedat21 to aroclr'lever 22 which is pivoted at 23 to a bracket varm v211, Asaid bracket arm :being secured'to thei-nner wall of the side frame 'ofthesupportingstruc ture ofy the'loom. The lowerend 25 ofthe rocklever22 is provided with .ai lplurality of perforatioiis l26 adapted to receive the pivot Vpin 23 for yadjusting the throw of the said prongs are perforated to receive a pin 29. This pin rides in a slot in a bar 3l which is rigid-ly secured at 32 to a vertically oscillating heald 33. The pin 29-passes through a second slotted bar 34 which is rigidly secured at 35 to a second vertically oscillating heald 36.

Slotted bars 37 are rigidly secured to a transverse bar 39 which is connected to the side members of the frame 1 and located above a stationary heald 39. The stationary heald 39 is secured to the bars 37 and is adapted to be adjusted manually and vertically through the slotted bars 37. A fourth heald 41 is secured to bars similar to the slotted bars 37 which are adjustably connected to a second transverse bar 43. The second transverse bar is likewise rigidly secured tol the side members of the frame l.

The intermediate healds 33 and 36 are bolted together and connected by means of straps 44 to the boss rollers 50. The skeleton harness frame 53 is also connected by means of straps 51 to the boss rollers 50. Intermediate harness and skeleton harness are vertically reciprocated. by means of regular two-harness cams operated by the earn shaft 2.

The shed of warp threads comprise two sets of stationary sheds and two sets of movable sheds, the movable sheds being carried by the oscillating healds 33 and 36. Shed 45 is carried by the stationary heald 39 while shed 46 is controlled, by heald 33; shed 47 is controlled by oscillating heald 36 while shed 48 is controlled by the stationary heald 4l. A reed or beater 49 receives the warp threads of the four sheds and is adapted to beat the picks 52 in position in the usual manner. The usual form of shuttle is employed for carrying the picks back and forth.V

The operation of our device is as follows:

The adjustment of the lever 22 by means of the pin 23 and the perforation 26 and likewise the adjustment of the throw of the lever by means of the turn-buckle 17 is dependent upon the size and the kind of loom. employed and likewise upon the kind or design of materials it is intended to manufacture. The healds 33 and 36 are bolted together and vertically reciprocated with the skeleton harness in the usual manner While the healds 39 and 4l remain stationary and therefore the shed 46 controlled by heald 33 is moved upand down in the usual manner for crossing the wanp` threads of said shed with the warp threads of shed 45 in a vertical plane to lock the picks 52 in position while movable shed 47 cooperates with the stationary shed 48 for crossing the warp threads vertically and locking the picks in position. It will be seen that by the usual operation of the healds and the Vlower portion of the tubing.

ln order to lock the picks 52 in a predetermined position, we shift the healds 33 and 36 laterally of the machine, thereby horizontally crossing the warp threads of shed 46 with warp threads of shed 457 while the warp threads of shed 47 are crossed horizontally with the warp threads of shed 48.

The gear 3 meshing with gear 6 drives the last mentioned gear and through the crank pin 8 causes vertical reciprocat-ion of the alined and connected rods l5 and 1,8 thereby oscillating the rock lever 22. The fork at the lower end of the arm 25 of said lever oscillates laterally and in a horizontal manner and therefore shifts the healds 33 and 36 in a horizontal manner for crossing the warp threads of the various sheds as has been previously explained.

The slotted connectingvmembers 3l and 34 of the respective healds 33 and 36 permit the connecting members to rise vertically on the pin 29 while oscillation of the lever 22 causes a lateral shifting of the healds 33 and 36. The oscillating lever 22 shifts the healds 33 and 36 and therefore the warp threads carried by said healds in the working harness from first one side to the other of the threads in the stationary harness thereby crossing the warp threads between each pick of the filling. The loom in this case delivers two picks to one stroke of the oscillator 22, one pick crossing thel endsof the front working harness with the ends of the front stationary harness thereby weaving the upper side of the tube. The neXt pick crosses the ends of the back working harness or heald 4l thereby weaving the lower side of the tubing. The next stroke of the oscillator in the opposite direction gives the same results but in the opposite direction so that the warp threads of the shifting healds cross an adjacent warp thread of the stationary healds and then upon the return stroke of the shiftable warp threads are transposed diagonally across the other adjacent warpthread. .lt will be seen that the loom delivers four picks to one complete movement of the oscillator.

Heald 39 is located at a sufficient elevation to form the top shed of tube and heald 4l is located below heald 39 to properly form the lower side of the tube.

In order that the threads of sheds 46 and 47 may be crossed horizontally over the threads of the respective sheds 45 and 48, healds 33 and 39 cooperating to form the top of the leno tube are each provided with an eXtra space between each needle eye. The threads from healds 36 and 4l are drawn llO needle eye and the threads from healds 33 and 39 are drawn through said spaces.

The needle eyes of healds- 39 and 36 point upward while the needle eyes of and-41 Y point downward. lThese eyes are not shown on the drawings since suoli a construction is well known in the art.V

Vhat we claim is: f

In a leno loom, the combination with ver,-

tical reciprocating healds land stationaryv healds, means tor causing shitting ot the reciprocating healds, said means comprising a rod having an enlargement at its lower end, said enlargement being provided with a hor1- vzontal slot, a drive gear, a pin on the gear received by the slot, a lever having an adjustable pivotalvmounting vintermediate .its

lends, one end ot the lever being connected with the rod, a yoke at the opposite end of the lever having armsprojecting laterally and 'then inwardly and with an arm connected with a heald for causing simultaneous lateral shitting of the vreciprocating healds kand means for maintaining the stationary healds in position while the reciprocating healds are shifted laterally between said stationary healds.

JOHN SNELGRO'VV BACHMAN. SIDNEY ARTHUR MOAK. STARLING CHRISTOPER LEVIS.

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