US1990280A - Magazine control mechanism - Google Patents

Description

Feb. 5, 1935. A. GORDON ET AL 1,990,280

MAGAZINE CONTROL MECHANISM I Filed Aug. 1, 1933 2 Sheets-Sheet 1 MAGAZINE CONTROL MECHANISM Filed Aug. 1, 1955 2 Sheets-Sheet 2 Patented Feb. 5, 1935 I 1,990,280 t MAGAZINE CONTROL MECHANISM Albert A. Gordon and William Wattie, Worcester, Mass, assignors to Crompton &.Knowles Loom Works, Worcester, Mass, a corporation of Massachusetts Application August 1933, Serial No.683 ,14 5

2C1aims.

This: invention relates to automatic I looms in which a magazine is provided having twov or more compartments for reserve bobbins.

.Itis the object of our present invention to provide control mechanism'for such a magazine, by

which mechanism the bobbins will be released from the different magazine compartments in a predetermined sequence.

More specifically, we have provided improved mechanism for releasing a bobbin from each I compartment of a magazine in succession upon indication of weft exhaustion, and-for repeating this sequence indefinitely.

Our-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 Fig. 1 is a side elevation, partly in section, of a portion of a loom embodying our improvements;

Fig. 2 is a plan view of certain parts, looking in the direction of the arrow 2 in Fig. 1, and

Figs. 3 and 4 are additional plan views, partly in section, and taken substantially along the lines 3-3 and 4-4 in Fig. 1.

Referring to Fig. 1, we have shown our invention embodied in a loom having a loom frame 10, drop boxes 11 vertically shiftable on a lay 12, and having a weft carrier magazine 13 mounted in fixed position on the frame 10.

The magazine shown in the drawings is of the general type shown in the priorv patent to Albert A. Gordon, No. 1,803,181, issued April 28, 1931, and comprises two bobbin holders selectively movable downward in fixed guideways to present a bobbin B in position for rearward movement to transfer position by the transferrer 14.

The transferrer is mounted on a supporting rod 15 connected by a link 16 to a head or plate 17 having a substantially L-shaped slot 18 therein. A cam 20 on the usual cam shaft 21 actuates a bell crank 22 having a stud 23 normally positioned in the segmental upper portion of the slot 18 and oscillating freely therein.

An arm 25 is mounted on a cross shaft 26 which is controlled from weft detecting mechanism (not shown) at the opposite side of the loom, said arm being swung downward in the direction of the arrow a in Fig. 1 upon indication of weft exhaustion. A rocking lever 30 is pivoted at 31 and has a stud 32 at one end underlying the arm 25. The opposite endv of the lever 30 is provided with a ledge or projection 33 underlying the head or plate 17. 1

'will thereafter take place on If the arm 25 receives a downward "swinging movement when the stud 23 is at the forward end of the slot 18, the head 17 will be raised, bringing the stud 23 into the upright portion of the slot' 18, whereupon the next swinging movementof, the bell crank 22 will move the'transferrer 14 rearward to transfer position and'thetransferlay 12' tofront center.-

.. The parts thus far describedin themselves form no part of our present inventionand for a more movement of :the

complete description reference is made totheprior patent mentioned above.

Our present invention relates particularly to means for determining the order in which the bobbin holders are depressed to present bobbins in'the path of the transferrer 14.

The magazine 13 is provided with the usual rock shaft or color slide 40, which is movable axially to select the bobbin holder to be depressed, and which is movable angularly to depress the selected bobbin holder.

For accomplishing the angular movement, the shaft 40 is provided with an offset arm 41 connected by a link 42 to the outer end of the arm 25 previously described. As the arm 25 is depressed to raise the head 17 to operative position, the shaft 40 is rocked to lower the selected bobbin holder.

Under certain conditions of loom operation it is desirable to deliver bobbins alternately from each of the two bobbin holders and we have provided very simple mechanism for accomplishing this result. e

For this purpose we provide a stud 50 on the upper part of the slotted head or plate 17, and we provide a bell crank 51 mounted on a fixed stud 52 and having a slot 53 to receive the stud 50. 'The horizontalarm of the bell crank 51 is connected by a link 55 to an arm 56 swinging about a fixed pivot 5'7. A cam disc 60 and ratchet plate 61 are freely rotatable on the stud 5'7 and are secured in fixed relation to each other.

A pawl 62 on the arm 56 engages the ratchet plate 61 and the pawl is advanced one tooth on each rearward movement of the plate 17 and transferrer 14. As these parts return to normal the cam disc 60 is 7 1,990,280 end of the rock shaft or color slide 40, and the able member on said magazine, a'lever engaging shaft is held in yielding engagement with the cam disc by a coil spring 72. l

When the rock shaft 40 engages a depressed portion 71 of the cam' disc 60, as shown in Fig. l,

the rock shaft40 is positioned to depress the rearward or,lefthand .bobbin holder in the magazine.

13. When the cam. plate, 60 is advanced onespace, so that the rock shaft 40 now engages a raised portion 70 of the cam disc, the rock shaft, will be positioned to engage and depress the forward or right hand bobbin holder in the magazine;

While the cam disc shown inthe drawings is adapted to causedeliverytofbobbins fromthe,

front and rear bobbin holders alternately, it is obvious that by changing the outline of the cam disc any desired sequence may be-provide'ch We have thus provided very simple mechanism by which bobbins may bepalternately delivered fromitwodifferent bobbincholders, or may. be. do.-

liizered pin cany 'desired .Tsequenoe. The moving .1

nately axially in opposite directions, pawl-and parts are few in ,number and; simple in constructionzand the; :mechanismwis entirely. reliablein:

operation-:r 7

,Having thus described ,our' invention and the advantagesthereof, we do, not wish' to be limited.

to; :the :details ,herein 1 disclosed, :otherwisa sthan as set forth in the claims, but what we claim is: 1. ;In ",8, weft; -'replenishing lom:,2 a magazine having ,twobobbin compartments, transfer mech:

anism; and automatic: means :to' present bobbins.

from said two compartmentsalternately to trans imposition; said lattenmeanscomprisinga shifta part of said transfer mechanism, an arm engaged by said lever, and a link connecting said arm to said shiftable member.

2. In a loom, weft replenishing mechanism including a magazine'having a plurality of compartments eachadapted to contain .a plurality of bobbins, means to depress a selected bobbinicompartment, a transfer member mounted to swingi, forward and rearward under said magazine and effective to transfer a bobbin from a depressed compartment rearwardly to an exhausted shuttle, actuating means for said transfer member including acontinuously oscillated actuating member, a vlinkconnected to said transfer member and having a head with a substantially L-shaped slot therein, means to shift said head vertically to operative relation with said actuating member on indication of weft exhaustion, a rock shaft slidable axially on said magazine to determine the compartment. to be depressed, a camand spring cooperating to move said rock shaft 'alter- I ratchet means to move said-cam intermittently, and actuating means for said pawl comprising a swinging, arm ,on which the pawl is mounted,,.a'.= lever, a link connecting saidarm andlever anda device connecting said lever-,tovsaidalinkhead,J; whereby successiverrearward and forward movements of said link and transfer member return and feeding. movements of said pawlw ALBERT LA. GORDON. 1 WILLIAM M: iWATTIEzi by: said, 1.4 v I continuously oscillated "actuating memberizeifectzz

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