US1970833A

US1970833A - Box-operating mechanism for looms

Info

Publication number: US1970833A
Application number: US653808A
Authority: US
Inventors: Albert J Bartson
Original assignee: Individual
Current assignee: Individual
Priority date: 1933-01-27
Filing date: 1933-01-27
Publication date: 1934-08-21
Anticipated expiration: 1951-08-21

Description

Aug. 21, 1934. BQARTSON 1,970,833

BOX OPERATING MECHANISM FOR LOOMS Filed Jan. 27, 1953 4. INVENTOR flwmr J B/IRTSO/V BY ,4. A43.

A'ITORN EY Patented Aug. 21, 1934 ;PATENT orl-"lce I This invention relates to looms in which the shuttle-box movements depend upon shifting of the shuttle-box operating mechanism-into posi tion to be actuated by driving means in theloom;

as in the case where said mechanism includes a vibrator-gear journaled in a vibrator-lever between two mutilated cylinder gears forming a part of the so-called driving means, said vibrator gear being brought into mesh with said cylinderm gears, alternately, by shifting the lever; This shifting must take place when the shed i's'open relation to one or the other of said, mutilated cylinder gears, for rotation thereby, and conse quent shifting of the boxes, upon the shed being closed. Heretofore' box operating mechanismsto satisfactorily control or effect the shifting of the vibrator lever, have been open to-the objections that they are complicated and inefilcient; requiring frequent adjustment and repair. 7 It is the object of this invention to provide a simple and positive acting box indicator mechanism. 1 5 In accordance with this inventionmeans are provided to move a rod attached tothe vibrator mechanism into direct operative relation with actuating means on the loom when the shed is open to position a vibrator gear in operative relation with one of the cylinder gears for rotation thereby. Referring to the drawing: Fig. 1 is a side elevation of a jacqu embodying the invention;

Fig. 2 isa rear elevation of a portion of the invention shown in Fig. l on a larger scale. x

Fig. 3 is a side elevation of a portion ofthe invention mounted on a loom of the dobby -head type. i

Fig. 4 is a front elevation of the chain and levers shown in Fig. 3.

- Fig. 5 is a top view of a portion of Fig. 2 showing the'adjustable lever mounting.

Referring to Fig. 1 there is shown the loom frame 1; lifter rod 2 for the boxes 3; the'lever 4 to which the lifter rod is connected;" the-bellcrank levers 5 fulcrumed in the loom-frame and connected by links 6 to different points in the length of and thus supporting the lever 4; the vibrator-gear connectors 7; the vibratory gears 8 to which at an eccentric point of each,- there is pivoted a connector and each of'which'is journaled in a vibrator lever 9 fulcrumed in the frame 1 at 10; the mutilated cylinder gears 11 and the: usual crank shaft 1'7.

55 There is also shown the usual lock bar 12 having rd loom a roll 13 mounted on a rod 14 and engaged by a cam15 rotatable with the lower cylinder gear 11; The lock bar 12 is adapted to be positioned above 'or below projections 16 on the vibrator levers, 9, thus'locking the vibrator levers in lowered or'raised position. When the lock bar 12 is forced to the right by the cam 15 the vibrator levers 9 are unlocked and may beraised or lowered by the box indicator. All of the parts thus far described are of the usual construction and in themselves form no part of this invention which relates more particularly to the drop box indicator shown in Figures 1 and 2.

Pivotally attachedat 18 to the vibrator levers 9 are rodslQ which extend upwardly and pass at their upper ends through openings or guides 32 in and adjacent to the free ends of levers 20. Leversz'o are rotatable about a shaft 21 mounted on a'support 41 whlchlimits their motion in one direction to normally holdthe rods 19 just free of the path of rotation of a pivoted plate 30 as will hereinafter be explained. The support 41 is adapted to be adjustably mounted on bracket 22 and is held inplace thereon by holding members 42 attached to the bracket 22 which extend'up be-' tween the slots40 in the support 41 and engage the upper side thereof. The bracket 22 is attached in any suitable manner to the frame 1 of the loom.

That portion of the crank shaft 17 which extends beyond the frame 1 or the loom, as shown in Fig; 2f, hasmounted thereon by any suitable means a cam 29 which revolves with the crank shaft 17. v A plate 30 is i'ulcrumed at 31 to a shaft attached tothe frame 1 of the loom in such a manner that itsfi'ee end "rests on the shaft 17. Thus asshaft 17 rotates, the free end of plate 30 is raised and lowered bymeans of cam 29. Cam 29 should be .so positioned that the lifting of plate 30 is in timed relation to the movement of cam" 13 on the lower cylinder gear 11 which releases the vibrator levers 9. Blocks 28 are attached to the rods19 in such a position that they are normally out of'the path of rotation of the late 30 but when the rods are tilted inwardly by the levers. as will be hereinafter described they will be engaged bythe free end of the plate 30.- Adjusting screws 33 are-provided on the blocks 28in order that the blocks may be adjusted on the rods 19. i

Attached to eye bolts 23 or any other suitable means are cords 24. which extend upward, pass through openings in a guide and are attached to the lower ends o'f'jacquard hooks 26. The

' gagement with its respective cylinder gear.

guide 25 is attached to the frame 1 of the loom in such a position that a slight pull on one of the cords 24 will cause a lever 20 to rotate about the shaft 21.

Thus when one of the jacquard hooks 26 to which a cord 24 is attached, is raised by a grifi blade 27, there will be exerted an upward pull on a lever 20 through the medium of cord 24, causing it to pivot about its fulcrum 21. As the lever 20 rotates about its shaft the rod 19 which extends through the opening 32 in the lever, is tilted toward the crank shaft 1'? a sufficient amount to bring the block 28 attached to the rod 19 into the path of rotation of the plate 30. As the plate is raised by means of the cam29 on the rotating crank shaft 1'7 its free end engages the under side of the block 28 and lifts it, thus lifting rod 19 and the vibrator lever 9 to which the rod is attached. At the same time that the cam 29 engages and lifts the plate 30 the cam 15 releases the vibrator levers 9 so that they may be moved. When the vibrator lever is in its new position the cam 15 allows lock bar 12 to return, thus locking the vibrator lever in its new position. The vibrator lever will remain in that position until the hook 26 is no longer held in its raised poistion by the griif, due to a change in pattern. When the hook to which cord 24 is attached is'free to descend, lever 20 returns to its normal position, thus tilting rod 19 about'itspivot away from the plate 30 and removing block 28 from the path of rotation of. the plate 30. A portion of the support 41 forms a barrier to the movement of. lever 20 about its shaft 21 when the block 5 28 on the rod19 is. just clear of the plate 30 so that a slight upward pull by the 'cord24 will bring.

the block 28 into co'operativarelation with the plate 30. When the cam 15 next forces the lock bar 12 to the right the vibrator lever drops back into normal position where it will be out of'en- My invention is also adapted'to be used in a loom of the type having a chain with cams thereon, set according to a definite pattern to be made,

i for controlling the movement of the boxes and driven by a chain gear operatively connected to driving means in the loom such as in a loom of the dobby-head type. In a loom of this type as shown in Figs. 3 and 4 a chaingear 37 is attached by suitable, mechanism (not shown) toa driving means on loom 1. Anendless chain 36 having cross links 39 is mounted for rotation on said gear 3'7. Attached tothe cross links 39' at predeter' mined places according'to adefinite pattern to be 'woven are rollers or cams 38'." Pivoted at on a frame mounted on loom 1 are levers34, the free ends of which are adapted to rideon the cross links 39 as the chain 36 is rotated by the gear 37. When a roller or cam 38 engages the proper lever 34 as shownin Fig. 4 it lifts the free end of said lever exerting a pull. through the medium of a cord 24 to pivot a lever 20 about its fulcrum 21. The invention then functions in a manner similar to that as hereinbefore' explained with regard to a jacquard mechanism.

What is claimed is: t I 1. A box indicator for looms having a jacquard mechanism, a plurality of drop boxes and actuating mechanism including vibrator levers therefor, said indicating meanscomprising rotatable rods mounted on said vibrator levers, adjustable means on said rods, a plurality of levers pivoted at one end, the free ends of said rods passing through guides in the free ends of saidlevers, constantly moving actuating means on said loom,

said actuating means being adapted to engage said adjustable means on said rods when said rods are rotated toward it and pattern controlled means adapted to pivot said levers about their fulcrum to cause said actuating means to engage said adjustable means on said rods.

2. A box indicator for looms having a jacquard mechanism, a plurality of drop boxes and actuating mechanism including vibrator levers therefor, said indicating means comprising pivotedly mounted rods on said vibrator levers, blocks mounted on said rods, a plurality of pivotedly mounted levers, means on the free ends of said levers to loosely engage the free ends of said rods, flexible means linking said levers to hooks in said jacquard mechanism, constantly rotating means in said loom, a pivotally mounted plateon said loom, said plate being so mounted that its free end rests on said constantly rotating means, a cam mounted on said constantly rotating means to alternately lower and raise said plate, the free end of said plate being adapted to engage'said blocks to raise said rods when said rods are pivoted toward said constantly rotating means by said pivoted levers.

3. A box indicator for looms having a jacquard mechanism, a plurality of drop boxes and actu ating mechanism therefor, including vibrator levers, said indicator comprisingrods pivotally mounted on said vibrator levers, a plurality of pivoted levers mounted on' said loom, the free ends of each of said levers loosely engaging the free ends of said pivoted rods, flexible means linking said levers to hooks in said jacquard mechanism, a guide for said flexible means so positioned on said loom that an upward movement'by said hooks causes said levers to rotate upwardly thuscausing said rods to rotate toward said levers, blocks rigidly attached to said rods a predetermined distance from said rods fulcrum, and constantly rotating actuating means on said loom, said means being adapted to engage 'and raise said blocks when said rods are rotated by said levers. I

4. A box operating mechanism for looms having a plurality of drop boxes, comprising in combination a plurality of vibrator levers, a rod pivotally attached at one end to each of saidvibrator levers, constantly rotating actuating means on said loom, means on said rods adapted to be engaged and lifted by said actuating means, when moved into the path of rotation thereof by said rods thereby causing said rods and vibrator levers to be lifted and pattern-controlled means controlling the'pivotal movement of said rods so as to move'said means thereon in-and out of the path of rotation of said actuating means.

5. A box operating mechanism for looms having a plurality of drop boxes, comprising in combination a plurality of vibrator levers, 'pivotedly mounted rods on said levers, constantly rotating actuating means on said loom, means on said rods adapted to be engaged by and lifted by said constantly actuating means, when moved into the path of rotation thereof by said rods thereby causing said rods and vibrator levers to be lifted, means controlling the pivotal movement of said rods on said vibrator levers and patterncontrolled means controlling said controllingof rotation, constantly rotating actuating means on said loom, means on said rods adapted to be engaged by and lifted by said constantly rotating actuating means, when moved into the path of rotation thereof, thereby causing said rods and levers to be lifted, and automatic means controlling said first means and adapted to cause the latter to rotate said rods toward said constantly rotating actuating means thereby moving said means on said rods within the path of rotation of said actuating means.

7. A box operating mechanism for looms having a plurality of drop boxes, comprising in combination a plurality of vibrator levers, pivotally mounted rods in said vibrator levers, constantly rotating actuating means on said loom, means on said rods adapted to be engaged by and lifted by said actuating means, when moved into the path of rotation thereof, thereby causing said rods and vibrator levers to be lifted, and means controlling the engagement of said means with said actuating means, said means comprising a plurality of pivoted levers engaging the free ends of said rods and means operative according to a predetermined pattern to be made to control the rotation of said pivoted levers.

8. A box operating mechanism for looms having a plurality of drop boxes, comprising the combination of a plurality of vibrator levers, vertically disposed rods rotatably supported at their lower ends on said vibrator levers, means mounted on said rods, a constantly rotating actuating means on said loom, said actuating means being adapted to engage and raise said means on said rods when the latter are moved into its path of rotation thus lifting said rods and said vibrator levers, and pivotally mounted pattern-controlled guides operatively associated with the free ends of said rods and adapted to rotate said rods about their pivots toward said actuating means an amount sufficient to position the means mounted thereon within the path of rotation of said actuating means.

ALBERT J. BARTSON.