US1704860A - Picking mechanism for wide carpet looms - Google Patents

Description

March 12, 1929. r w. w. LASSEY 1,704,860

PICKING MECHANISM FOR WIDE CARPET Loofis Filed March 1927 We? WZamre) 3 7 OE-ways Patented Mar. 12,

UNITED stares lane Parser oFF1cE..;

WALTER W.'LASSEY, or woncn's'riin, MASSACHUSETTS, Assienon TO -lllli; J, WHITTALL ASSOCIATES, A VOLUNTAEEY' assoornrron or MASSACHUSETTS; v e

PICKING MEcHAi-iisMnoa winncnarnr LOOMS.

ilanar filed ma. 2, 1927. Serial 172323.

This'invention relates to certain improvements in the picking mechanism of wide,

carpet looms,it being the particular object of my invention to improve thesprmg tension devices forgiving actuating movement to the'picking' mechanism. I

By the useof my improvements, the cost of manufacture of the picking-mechanism is substantially reduced, and the breakage of springs and consequent loss of running time,

ofthe loom is largelyeliminated.

V My'invention further relates to arrangements and combinations of parts which will be hereinafter described and more particularly pointed out in the appended claims.-

A preferred form of the invention is shown in the drawings, in which- 5 Fig. 1 is a front elevation, partly in section, of certain parts-0f awide carpet loom embodying my improvements;

Fig; 2 is a similar view,*.showingcertain of the parts in a different position and- Fig. 3 is a detail sectional plan .VlBW,

taken along the line 3-3]in,Fig. .1.

Referring to the drawings, I have indi-' cated a. pickerstick 10, pivoted at 11,'and a pick-lever 12, pivoted at. 13, and connected with, the pickerstickby the usual link connections 14 and 15. A square lug 161projects laterally from the'side of the lever 12 and is positioned for engagement, by a, latch 18 pivoted at 19 and having a depending arm 20. A spring 21is flexibly conected .to'the hub 22 of the latch 18 and tends to move the latch yieldingly to holding position.

'Asettin'g lever 25 is also pivoted at 13, and is connected-by a rod 26 witha crank pin 27, mounted on a crank shaft 28 and continuously rotated. Suitable connections 30 are- )rovided between the settin lever .25

. l i e shown in the drawings, and a similar-setting lever positioned at the opposite side of the The setting lever 25 s provided with a rearwardly pro ecting lugBl (F g, 8) positioned to engage the pick-lever 12 as the lever 25 is moved to the left, (as viewed in Fig.1), 1

by the rotation of the crank pin 27. NVhen the pick-lever 12 is thus moved to the left, it isengaged andheld by the latch 18, remaining in its left-hand position while. the setting lever 25 returns to its-initial or right hand position.

' -The. setting lever 25 provided with a laterally projecting arm 32 having a contact the setting lever returns to initial or righthand position, the stud 33 engages the de- A pendingarm 20of the latch 18, raising the latch and releasing the pick-lever 12.,

For actuating the pick-lever when thus,

released, I have'provided a heavy coiled spring 35. (Fig. 1) housed within a casing 36 I which has a head 37 at one end and a remov-' able'cap 38 at the opposite end. The casing,

is firmly bolted to a portion ofthe loom frame. A rod 39lextends through an openingin' the head 37 andalso extendsaxially through the spring 35. A um: or abutment-:40 is adjustably positioned on the rod 39 by nuts 41 and 42, one end of the spring 35 being centered bythe nut 41.

The opposite end of the rod 39 is .con-' n'ected by a flexible member 44 to a lug 45 projecting froin'the side of the "pick-lever 12. A guide roll 46 is also provided, so that the tension on the flexiblemember44may be kept directly in line with theaxis, of the sliding I rod 89.

, vV hen the pick-lever 1 2 is moved to the left by the setting lever 25, and is'secured by the latch 18, the spring 35 is placed under increased tension and when the latch 18 is released, the spring 35 swings the picklever 12 with a quick powerful motion to the right, giving the desired picking motion to the pickerstick 10; The force an'deffeetive- I ness of the Picking motion may be regulated" as desired'by adjusting the nuts 41 and 42 on the rod 39.

It will be noted that the spring '35 is subtal injury. Also, that the action'of the spring is due to compression rather than tension, and that the probability of break- 1 age of the spring is therebyvery much reduced. 1

In thepractical operation of myiinproved picking mechanism, ithas been found that] the replacement ofsprings has been almost entirely eliminated, with acorresponding and very substantial saving in thejrunning I time or the loom.

stantially enclosed within its casing and is veiflectively protected from dirt and acciden- Having thus described my invention and.

to position for comprising a heavycoiled spring and means to place said spring under compression as position for engagetherefor, a rod extending the advantages thereof, I do notwish to be limited to the details herein disclosed other-' wise than as set forth in the claims,-but

'What I claim 1s:- 7 V 1. In a Wide loom, apickmg mechanism comprising a; shaft, a pick-lever mounted thereon, a latch for said lever, means including a setting lever on said shaft to trip said latch and release said pick-lever, and a spring device effective to give said released pick-lever a picking movement, and continuously acting means to return said pick-lever latching, said spring device said lever is moved to nient by said latch. i p

2. In a Wide 100111, a picking mechanism comprising a shaft, a pick-lever mounted thereon, a latch forsaid lever, means including a setting lever on said shaft to trip said latch and release said pick-lever, and a spring device effective to give said released pick-lever a plcking movement, and continuq ously acting means to return said pick-lever to position for l.atcl iing,'said swing device,

comprising a heavy coiled spring, a easing; into said casing and through said spring, an abutment on said rod engaging said spring theend thereofreinotefrom said lever, and connectionsfrom said rod to said lever.

3. In a wide loom, a picking mechanism comprising a shaft, a pick-lever mounted thereon, a latch for said lever, means including a setting lever onsaid shaft to trip said latch and release said pick-lever, and a spring device effective to give said released pick-lever a picking movement, said spring device comprising a heavy coiled spring, a

casing therefor, a rod extending into said casing and through said spring and having an abutment engaging said'spring atthe end thereof remote from said lever, a flexible connection from said rod to said lever, and a guide for said flexible connect on.

4;: In a. Wide loom, apicking mechanism comprising a shaft, a pick-lever mounted thereon, a. latch for said lever, means including a setting lever on said shaft to trip said latch andrelease said pick-lever, and

a spring device effective to give said released pick-lever a picking movement, and continuously acting means 'to return said pick-leverflto position forlat-ching, said spring device comprising a heavy coiled 1 spring, a casing therefor, and a rod extending into said casing and through said spring; and having an abutment engaging said spring atthe end; thereof remote from said lever said casin bein' substantiall closed 9 b t) i at each end and effectively protecting said spring from dirt.

In a Wide looni, a picker stick pivoted thereon,a picking mechanism comprising a shaft, a pick lever mounted thereon, a latch for said pickslever, continuously acting means-including a setting lever, mounted have hereunto

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