US1186680A - Picker-motion. - Google Patents

Description

G. POTSTADA.

PICKER MOTION.

7.1914. RENEWED 1111111251916.

APPLICATION FILED IAN. 2 I

Patented June 13, 1916.

2 SHEETS-SHEET I.

1N VEN TOR.

IWITNESSES.-

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PICKER MOTION. APPLICATION man JAN. 21. 1914. RENEwD MAR. 2

Patented J une 13, 1916. 2 SHEETS-SHEET 2 mmm... H w Sv.

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ED' STAEN GEORGE POTSTVADA, OF SAN FRANCISCO, CALIFORNIA.

PICKER-MOTION.

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Specification of Letters Patent.

* Patented-aune 13,1916.

Application filed January 27, 1914, Serial No. 814,696. 'Renewed March 25, 1916. `Serial No. 86,800.

To all 'whom t may concern.'

Be it known that I, GEORGE Po'rsiTADA,a citizen of the United States, residing at vSan Francisco, in the county of San Francisco and State of California, have invented anew and'usefull Picker-Motion, of which the following is a speciiication in such full and clear terms as will enable those skilled in th art to construct and use the same.

in the drawing in which the same reference numeral is applied to the same portion throughout, but I am aware that there are many modifications thereof.

Figure 1 is a front elevation of the lay of a loom, a portionponly of the supporting frame being illustrated, Fig. 1A is a bottom plan view of the driving cam andV yoke operated' thereby.' Fig. 2 is a. plan view of said lay, Fig. 3 is a side elevation of the lay4 and a portion of the' frame and loom looking in the direction of the arrow Fig. 1. Fig. 4 is a view partly in 1 4section of a portion -of the lay illustrating the slides which open the shuttle jaws, Fig. 5 is aside elevation of the adjusting. screw used for releasing the picker lock, and Fig. 6 is an Aend elevatlon of the cam end of the picker lock adjusting screw.

This invention relates vto a picker operator r 4for looms and its object is to4 provide means lay is pivotally connected by the usual swords 3 and 4, the lay swords supporting an whereby the shuttle will at all times be given a positive and equal speed.

' Another object of the .invention is to profy duce a picker operator which will require less power than the common forms of picker operator's,'and which will be positively operated at all points. While this-picker armis shown in connection with a particularl type of loom in which'a shuttle is used to. carry the weft threads from large spools at each side of the loom, the operating mechanism is equally applicable to any shuttle, the impulse. thereto being given by means 'of a vacuum cylinder.

The numerals 1 and 2 represent portions of two side frames of the loom to which the angle iron 5, which in turn supports a `flat member knownv vas the lay bed 6, the reed through which the warp threads pass being omitted for purposes of Iillustration.

Depending from the angle iron 5 are the bearings 7, 8, 9,'10 and 11. The bearings 7 and 11 carry the -weft measurers 12 and 13,

An embodiment of the invention is showny 18 which hubs pass through the bearings 7 and 11, and set screws 19 and 20 secure said weft measurers in place.

The weft measurers are fully described and set forth in application Ser. No. 814,698,

led Jan. 27, 1914, and form no part of the present invention and are not included herein. They are intended to present the ends Aof the weft threads successively to the shuttle jaws.

The tube 15 has a clamp 22, which clamp has a portion 23 inclined forwardly and upwardly which extends through the angle iron 5 and lay bed 6 to afford the backing for the picker arm 24 to strike on. There are two picker arms 24 and 24 which are pivotedv on thev lay swords at 25. The tube 1 5 also has two clamps 25 and 27 thereon, which clamps are on their back provided with cam surfaces 28 and 29, the object of which is to release the jaws-of the weft carrier as will b e later explained.

. Below the bearings 8 and 9 there' is a cast` ing 30, the ends of which at 31 and 32 are clampedl respectively to the tubes 15 and 16,

' while at 33 and 34 said casting is provided The tube 16 adjacent the bearing 10 has a4 clamp 36 with an upwardly extending arm I 37 pivoted to a lever 38, said lever being v pivotedbehind the tube 16 at 39 to the angle iron '5, while the lower end of said lever extends into the vacuum cylinder 40 and is connected with the piston rod 41 for a purpose to be later explained. Adjacent the I picker arm 24 the tube 16 has two' cam clamps 42 and 43 substantially the same'as the clamps 26'and 27, but reversely placed,

while immediately adjacent the clamp 43 is a clamp 44, the same as the clamp 22, also reversely placed with respect to the clamp 22.'

Between the'bearings 8 and 9 there is a yoke 45 which affords a bearing for the shaft 46 and which also .has two bearings 47 and 48 through which the Shaft 14 extends. The shaft 46 has a bevel gear 49 in mesh with a bevel Ygear 50 on the shaft 14, said shaft 46 being driven from-.any suitable source of power, not' a part of -this invention.

Thevacuum tube 40 is vsupported/by means of brackets 51 and 52 which are connectedv with the angle iron 5. This vacuum tube is provided with two pistons 53 and 54 on the piston rod 41 and with oppositely operated pistons 56 and 55 on the piston rods 57 and 58 extending through guide boxes 59l and 60 on the ends of the cylinder 40.

Each pickerar'm extends up through the slot in the angle iron 5 and through the lay bed, and is provided with a lug 61 Whichengages an L shaped catch 62 .pivoted on f blocks having their ends shaped to cause the blocks 63 and. 63 connected respectiveljiT with the clamps 22 and 44. Each block 63 and 63 is provided .with a spring shuttle positioner-64- Thelay bed has a block 55 adjacent each shutter positioner, each of said inclined portion 66 of each shuttle positioner to move the shuttle positioner outwardly out of engagement with the shuttle oi-.weft carrier when the weft carrier is about to be released to travel through the shed. The blocks 65 also afford means to prevent the weft carrier from being dislodged during lthe several operations which occur at the end of its travel each time it picks upf the yarn.

The depending bearings 7 and 11 are each provided with a screw as illustrated at 68 and 69,' each of which screws has a cam Surface thereon at 7 0 for the purpose of striking the depending arms of the hooks'62, the position of said cam determining the precise moment of release of said hook, the left.

hand hook in Fig. 1 being shown .as of the insta-nt` of release. v

Each picker arm is provided with .a yoke 71 which yokes are connected with the pis?A v ton rods 57 and 58 by means of threaded rods 72 and 73, said rods being secured in a given adjustment by means of Vlock nuts 74 and 75. The. lay is worked back and forth in a well known manner by means of -links 76 and 77 connected with ears 78 and 79 bolted on the back of the angle iron 5;

. The camA clamps 26, 27 and 42, 43 operate j slides 81, 82, 83 yand 84 respectively, saidslides each lhaving a slot and being secured inrplace against the inner sidel of the angle iron'5 by means of Screws 85, 86, 87 and 88. Eachof `the SlidesSl to-84 has-an upwardly extending arm 90 connected therewith. Each arm is U shaped at its upper end and the short leg of each carries a roller 91, said rollers being for the purpose of opening the jaws at the ends of the carrier used'with this loom in amanner to be later explained.

. Each of the armsA 90 has a spring 92 to cause the arms to remain normally in the position 'shown in Fig. 1, a plateQO covering vthe springs and the block and beneath which Vthe carrier passes.

The operation of the apparatus is as follows: xaminingFig. 1 it will be seen that the'ho'o 62 at the left end of the lay isljust about to be released from the -lug 61 on the picker arm. Thereupon the piston 55 will be drawn by the vacuum' forcibly against the piston 53, the shock of the throw being taken by the picker arm at the end of the slot 80, the slot 80 at the opposite end of the lay acting in the same manner with respect to the other picker arm. At this same time it will be observed that the cam clamps 27 and 26 have passed over-the cam slides 81 and 82, thus releasing the rollers'91y from contact with the weft carrier. At this same time the picker arm is free to move to throw the carrier, and as the shaft 46 continues to rotate it will carry the ktubes 15 and 16 to the right, whereupon the piston rod 41 will be pushed to the left such an amount as is necessary to cause the picker arm 24 to relengage thehook 6,2, the cam 35 having carried the othery hook 62 and its supportingl block 63 to the right Ythe same amount as the tube 15 moves.. This action will set the picker arm at the left and the further action of the cam 35 will pull the picker arm 24 to the right far enough for the depending end of thehook 62 to' engage the cani surface of the'right hand screw 68, whereupon that picker arm will be released and the weft carrier will be returned .to the left hand end of the lay. Before the picker arm is released, however, the cams on the back of` the clamps 42 and 43 will have engaged the cam slides 83 vand 84 and will have ,pulledv 'the two rollers 91l down into contact with the weft carrier, thereby opening the jaws of the same to release theyarn carried thereby and to engage a new yarn end, the .operations being repeated in a continuous cycle. The shaft 14 operatesy rotary yarn measuring and -holding devices X withinthe casings 1 2 and 13, butI these devices form the subject-matter of a separate patent vapplication.

The shuttle or weft carrierl is shown at 66 and in order to hold the picker arm lock tightly. against the lug on the top of the picker arm, a spring 62i'is used. In order to reduce the friction of the cams on the top ofthe clamps 26, 27 and 442 andl 43, each of the slides 81to 84 is provided with a Vsmall roller 81', note Fig. 4.

Having thus described my invention what i I claim as new and desire to secure by Letters Patent of the United States, is as follows,

modifications within the scope of the claims being expressly reserved.

1. In a loom, the combination, withl the picker arm in one position, means to shift lay, of a lpicker arm, means to lock said said picker arm until ysaid locking means is released, a vacuum cylinder, a piston in the vacuum cylinder, for operatingsaid picker arm, a second picker arm, a plston in the vacuum cylinder connected with said second arm, and an operating piston'- between the other two pistonsfor alternately setting the two picker arms and for producing a vacunm in said cylinder.

2. In a loom7 the combinatiomwith the lay, ol a picker arm, a slide on said lay, a hook earrieil by the slide to engage the picker arm and loi-k the same, means to canse said hook 'to be released from the picker arm, a Vacunm (1s-'linden a piston in the vacuum cylinder, Jr'or operatlng the picker arm when released. a second picker arm, a piston onneeted therewith, and another piston for alternately setting the picker arms and for producing a vacuum 1n the cylinder for llrii'ing the pieker arms.

3. In a loom, the combination, with the? lay. ofla picker arm, a slide on said lay, a hook carried thereby to engage and lock the piekenv arm, means to release said hook, a vaciinm cylinder, connections therewith and with the. picker arm for operating the same when released, a shuttle positioner for the weftearrier, and .means to release said comealong from the weft carrier when the' picker arm is released.' A l 4. In a loom, the combination, with the lay, of a picker arm at each end thereof, means to lock said picker arms in one'position, means to shift them alternately'until4 the locking means is released, a vacuum chamber, and means connected with the vacuum chamber and each of said picker arms'i'or operating them.

5. In a loom, the combination, with the la'y, of a picker arm, a slide movable on the lay, a hook on said slide to engage the picker arm, means to bring the picker arm into engagement with said hook, means whereby further movement is `given to said slide and picker arm, means to release said hook at the end of the movement of the picker arm, and a vacuum chamber having connections with the picker arm for operating the same.

stops for alternately disengaging the hooks i from the picker, arms.

In testimony whereof I have hereunto set my hand this 20th day of January, A. D. 1914, in the presence of the two subscribed v witnesses. f

GEORGE rorsTADA.

Vitnesses:

f C. P. GRIFFIN,

HENRY B. LESTER.

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