US2445024A - Weft cutter on multishuttle box looms - Google Patents

Description

July 13, 1948. c FloRlNA 2,445,024

WEFT CUTTER ON MULTISHUTTLE BOX LOOMS Filed Jan. 25, 1945 2 Sheets-Sheet 1 INVENTOR, Chum Fioflflw,

BY M d I ATTORNEY.

July 13, 1948. CQFIORINA 2,445,024

WEF'T CUTTER ON MULTISHUTTLE BoX LOOMS Filed Jan. 25, 1945 I 2 Sheets-Sheet 2 INVENTOR, C h a rle's' Fz'ar zIYLa/ A TTORNEK ward stroke of the batten the dagger is allowed by the feeler to fall to clear said notch, but if such filling is absent the dagger is lifted and engages the notch to effect stopping of the loom. What has so far been described is conventional in looms of the type first herelnbefore referred to adapted for weaving withthe use of catchcords as b, and with the use of a-plurality of shuttles and having a filling stop-motion means.

As the weaving proceeds the shuttles go into action as determined by the'means controlling the vibrator levers 23here alternately because in this example there are only two shuttles shown, though the number of shuttles. partaking in the weaving is not material so. long as there are at least two. If the filling from either shuttle fails,. as by being exhausted, the weft stop-motion means will stop the loom on'the ensuing flight of the shuttle. It will be'understood that since the catch-cord b is subject to shedding the sameas the warp proper the filling becomes'trained around it to form what is in effect a selvage.

Now my invention is particularly related to the weaving of repeatedpatterns in each of which,

a plurality of shuttles being used to develop each pattern, one shuttle continues in action'while the warp-is being advanced through a maximum distance whereby that shuttle lays filling in the warp sheds to form a woven zone of maximum Width, which I term the wider zone.

The continuous filling so laid through the sheds I term the primary filling. What I term the primary zones thus formed will in the finished piece be spaced from each other, and have (extending from-one to the other margin of .the piece) their final filling stretches all equally spaced apart.

' In the space between each .two such zones another shuttle or shuttles go into action, perhaps, also, together with the first-named shuttle; each to lay continuous secondary filling in thesheds for the forming of another or other zones, which I term the narrower zone, and which has a width less than that of the wider zone; a

So much of the iloomas includes the shuttles (here only two), the picker-stick,'box-set and the means for shifting the latter to bring a given shuttle in linewith the lay .I treat as .m eans,

while the warp is advanced at constant rate and subjected to shedding, for performing two functions, to wit, (1) laying continuous ,filling d -through the warp sheds :to form with the warp, :spaced from each other lengthwise of-the warp, "woven primary zones 14' all having their final :stretches equally spaced'apart and (Z) 1aying continuous filling through the shedsinthe spaces a: between said zones to form other and narrower woven zones.

Now, in bearings 30 on structure l is journaled a shaft 3! geared .at '32 with thegearing 5 so as to be rotated clockwise asviewed from the right in Fig. 2.. This shaft-has 'f astithereon a disk-shaped cutter 33 having it-speriphery as its cutting edge, it being arranged in a planebetween the catch-cord b and the'adjoiningwarpproper a and projecting through the plane of the .intervening filling; since there are here shown two groups of warps proper there is a similar cutter 33d on. the shaft'similarly l-ocated with respect to, such groups, As thesevering proceeds As for the cutters 33a which sever between the groups of warp proper the same might be placed anywhere lengthwise of the already woven area, but this is not true of cutter 33 which severs between the catch-cord and adjoining warp proper. Thus account must be taken of the circumstance that cutter 33 may be active to sever the filling extending from such a shuttle, as 12, Fig. 2, which is inactive, or remaining boxed, while the other shuttle is active, with the consequence that when the former shuttle again goes into action the weft stop-motion would cause stopping of the loom because its severed filling would not depress the feeler.

-H-ence, according to my invention I position the cutters (especially cutter 33) completely forward of the last wider zone adjacent the fell which has just been completely woven. The final filllngstretches of the zones 3/ being all equally spaced apart it follows that, with the cutter 33 so positioned, such cutter cannot sever until the filling from shuttle 12 has first been more or less laid in the warp sheds and so has passed the feeler and held it depressed. The cutter is here so far forward as to be below the breast-beam, but I do not wish thus to be limited. In the spaces '1 thefzones woven or left unwoven are wider-than the zonesm'.

Said haft for the cutters; is preferably arranged below the breast-beam, between it and j th-e-sand-roller, being forward of the depending part of the piece. Sinice the cutters rotate clockwise (viewed from the right, Fig. 2), or so that their peripheral portionswhich are between the shaft and the warp move generally in thesame direction as the latter, and of course-at a different speed, the filling isassuredlysevered, especially in view of the following: A guide 34 is attachedto and depends from the breast-beam back of and so as to be wiped by the piece and it is sli tted at 34a to accommodate, the, corresponding cutter.

That one of saidguides which cooperates with the cutter 33 has one arm thereof, i. e., the arm 34!) adjoining the catch-cord, bent forwardly thus to form an abutment suit-ably spaced from the cutter. Although the warp is of course advanced under tension by what I term oing mean-s Shuttle .12 provides the filling c for the woven zones :2: andshuttle I3 prowides the fillingd to form the woven zones in the spaces-y.

comprising the take-up and let off means, the catch-cord, under the tension of the filling, usually bows, inwardly to an extent which, inthe absence ofsaid abutment, would result (as con- 'forrepeatedly forming sheds ,in the vwarp, during advance. thereof, means ,to lay continuous these-cutters sever the filling as they rotate thus t form airings on eachband-offabric-developed.

primary filling through the sheds and form with the. warp, spaced from each other lengthwise of the warp, woven wider'zones all havingthe'irfinal filling stretches equally spaced apart byspaces narrower than said zones, means tolay continuous secondary filling through the sheds in the spaces between said wider; zones and form other narrower woven zones, means-to indicate filling failure each time filling is laid through a shed, and a cutter on said structure arranged to sever the filling portions connecting the warp proper and auxiliary warp element, said cutter being positioned completely forward of the last wider zone adjacent the fell, which has just been completely woven, a sufficient distance so that the filling from the second named filling laying means remains intact until said last named means has laid at least the initial filling through the sheds forming a part of the next succeeding narrower zone.

2. A loom including supporting structure, means to advance, at constant rate and in synchrony, groups of warp proper paralleling and spaced from each other and a flexible auxiliary element spaced from and paralleling the relatively outer margin of one such group, such groups and element forming the warp f the fabric to be woven, means for repeatedly forming sheds in the warp during advance thereof, means to lay continuous primary filling through the sheds and form with the warp, spaced from each other lengthwise of the warp, Woven wider zones all having their final filling stretches equally spaced apart, means to lay continuous secondary filling through the sheds in the spaces between said wider zones and form other narrower woven zones, means to indicate filling failure each time fillin is laid through a shed, a shaft supported by said structure and extending transversely of the warp, and cutters on the shaft respectively arranged to sever the filling between said groups and between said element and the adjoining group, said shaft and cutters being positioned completely forward of the last group of wider zones adjacent the fell, which has just been completely woven, a suificient distance so that the filling from the second named filling laying means remains intact until said last named means has laid at least the initial filling through the sheds forming a part of the next succeeding narrower zone.

3. In a loom, the combination of supporting structure including a breast-beam, a rotary shaft journaled in said structure below and parallel with .the breast-beam and having in fast relation to itself a cutter having a peripheral cutting edge and projecting through the plane of the warp extending over the breast-beam and downwardly, and a guide for the warp depending from the breast-beam at .the breast-beam side of the wa p and having a slit receiving the peripheral portion of the cutter.

4. In a loom, the combination of supporting structure having a breast-beam, going means in said structure including means for advancing under tension warp having filling interwoven therewith, a rotary shaft journaled in said structure below and parallel with the breast-beam and having in fast relation to itself a cutter having a peripheral cutting edge and projecting through the plane of the warp extending from the breastbeam downwardly, means, driven by said going means, to rotate said shaft in the direction in which that peripheral portion of the cutter which adjoins the warp moves downwardly, and a guide for the war-p depending from .the breast-beam rearward of the warp and having a slit receiving the peripheral portion of the cutter.

5. In a loom, the combination of supporting structure, means therein for advancing under tension a warp proper and a flexible auxiliary warp element paralleling and spaced from a margin of the warp proper, said Warp proper having filling interwoven therewith and trained around said element, severing means on said structure including a cutter projecting into the path of the art of the filling between the warp proper and said element, and means on said structure wiped by said element and holding the same clear of the cutter.

CHARLES LFIORINA.

REFERENCES CITED The following references are of record in the file of this patent:

UNITED STATES PATENTS Number Name Date 868,688 Naylor Oct. 22, 1907 1,872,979 Kronoff Aug. 23, 1932 1,970,365 Dudley Aug. 14, 1934 FOREIGN PATENTS Number Country Date 597 Austria Nov. 25, 1899 109,312 Germany Mar. 22, 1900 176,722 Great Britain Feb. 16, 1922 740,926 France Nov. 22, 1932

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