US1631088A - Drag roll and clearing plate for looms - Google Patents

Description

May 31, 1927.

1,631,088 H. A. nAvxs DRAG ROLL AND CLEARING PLATE FOR LOQMS Filed Aug. 10, 1926 /l TTOR/VEY Patented May 31, 1927.

HARRY A. DAVS, F HOPEDALE, MASSACHUSETTS, ASSIGNOR T0 DRAPER CORPORA- TION, OF HOPEDALE, MASSACHUSETTS, A CORPORATION O1"V MAINE.

DRAG ROLL AND CLEARINGVPLATE FOR-LOOMS.

Application filed August 10, 1926. Serial No.y 128,490.

This invention relates to drag roll looms wherein the'warp sheet is led from the warp beam around an auxiliary drag roll and thenl about a portion of the main drag roll as it passes towards the shedding mechanism, and the invention is more particularly directed to the lneansfor coll cting lint, dirt and other foreign substances detached from the warp sheet, so that such foreign matter shall not ybe carried along with the warp sheet into the woven cloth.

ln weaif'ing certain characters of fabrics, such, for instance, as duck and other cloths .employing heavier warp threads, it is now the usual practice to provide ani-ain and an auxiliary drag roll located above the warp beam and to pass the warp sheet over the auxiliary drag roll, then about the main drag roll, to spread the sheet and maintain the desired amount of tension on the vvarp threads. ln the use of wai-ps of this general character much lint, dirt and other foreign matter is detached from the warp threads, and in the absence of ineans to prevent may be carried with the'warp sheet and be finally woven into the cloth.

It is therefore one of the objects of the present invention to provide a construction which will take care of lint, dirt and foreign substances dropped from the warp sheet as it passes about the drag rolls on its way to the shedding mechanism and to collect such undesirable substances in a manner such that they may be readily removed from the loom. ,c

The invention and new combination of parts will best be made clear from the following description and the accompanying drawings of one good forni thereof.

In the drawings:

Fig. 1 is a perspective view at the rear portion of a loom containing the present invention; and y Fig. 2 isfa cross-sectional view showing the relation of parts constituting the present invention.

In drag roll looms the main and auxiliary drag rolls are customarily mounted in fixed bearings above the warp beam, and in some instances such drag rolls have been made of tubing or cylindrical hollow pipe, and in order to secure the desired tension upon the warp sheet, the warp is led from the warp beam about the auxiliary drag roll, then backwardly under and over the main ,drag roll towards the shed forming mechanism. In accordance with the present invention, the main drag roll is formed as a hollow cylinder mounted in fixed bearings and having a longitudinally extending slot or opening in the upper portion thereof into which lint, dirt or other foreign matter may fail and troni which it may be readily removed, and associated with such drag roll the present invention provides a lint collecting trough interposed'between the'main and auxiliary drag rolls, the construction being such that as the sheet' of warp passes over the rear portion of scraper of the lint collect-.ing trough, the lint and other foreign substances detached from the warp sheet may fall directly into the opening in the main drag roll, and as the warp sheet passes over the forward scraper forn'iing a part of the lint collecting trough, any additional matter detached from the warp sheet may fall into the open trough and so be readily removed. v

The looni frame 1 may be of usual construction and have associated therewith a bracket 2 upon which is formed a bearing 3 for the support of the journals or axial stud d which supports the warp beam 5, on which the warp threads a, are` wound.

Likewise secured to the loom frame at each side of the loom is a bracket 6 preferably secured in fixed position by means of bolts 7 which pass through slotted openings 8 in the bracket web, so that the bracket itself may be adjusted in proper position.

At the rear portion of the bracket 6 (one at each side of the loom) is a support 9 to which the main drag` roll 10 maybe secured., lIn the present instance, the supports 9 (only one of which is shown) have the upper and lower portions 11 and 12 partially surrounding the Vends of the main drag roll, and the latter may be secured to the bracket by suitable bolts 13. In order that the main drag roll may be laterally adjusted into the desired position, the drag roll is provided with slots 14 extending through the terminal end portions of the Vdrag roll, and through which the clamping bolts pass, as indicated in F ig. 1.

The main drag roll 10 is provided with a slot or opening` 15 extending longitudinally of the drag` roll and when the latter is in itsoperativeposition, suchpslot or opening 15 is at the upper portion of the drag roll,

as indicated in Figs. 1 and 2. 1n. the present instance it will be noted that the slot or opening 15 has its side walls flush with the cylindrical surface of the drag roll.

lViounted in bearings 16 formed in the bracket 6 is the auniliary drag roll 17 which is held from turning movement by the slabbed-oif portion 18 of the auxiliary drag roll. The warp threads are led from the warp beam upwardly under and over the auxiliary drag roll 17` as indicated in Fig. 2, then downwardly under the main drag roll and about an extended segmental surface thereof, and then towards the shedding mechanism.

Between the main and auxiliary drag rolls is a lint trough which may be appropriately secured in positionby any suitable means7 and in the present instance is shown as secured 'to the main drag roll by bolts 19. The lint trough 20, as above indicated, has a wide open top and when in position between the main and auxiliary drag rolls, the rear upwardly extending member 21 of the lint trough projects above the opening or slot in the main drag roll, with the result that any lint, dirt or foreign matter detached by the scraping edge of the trough may fall directly into or through the opening or slot 15 in the main drag roll.

The lint trough has its frontwartly eri:- tending side member 22 projecting upwardly, as indicated vin Figs. 1 and f2, and over it, as well as the rear wall of the trough, the. warp threads a pass, so that both the top of the rear wall of the trough and the front wall of the trough act as Scrapers for the warp sheet. Any lint, dirt or other foreign substance detached from the warp sheet by the front-wardly and upwardly eX- tendingl side member of the lint trough, will fall directly into the lint trough itself, as indicated in Fig. 2, and may be readily removed therefrom without disassembling the parts of the loom.

lNhile, as hereinbefore stated, the lint trough may be secured in position between the main and auxiliary drag rolls by any suitable means, it is found preferable in practice to mount the lint trough. upon the f main d'ragroll with its end portions abutting against the upper member 11 of the lined bearing 9 in which the main drag roll is supported, the result being that the lint trough is properly located and held in its operative position more particularly with respect to the opening or slot 15 in the main drag roll.

From the construction described it will be apparent that the main drag roll is an open-ended cylinder having a plain or unlanged opening or slot 15 for the discharge of lint and foreign substances detached by the scraper plate 21, which is independent of the main drag roll and secured in position so that the scraper edge of the scraper plate shall detach lint and foreign substances from a sheet of warp in such position relative to the slot or opening 15 in the main drag roll that such substances may accumulate upon the warp sheet, Vthe pres-- ent invention contemplates an apron or shield so supported that it shall rest upon the warp on the warp beam throughout the width of the loom, as more particularly illustrated in Fig. 2.

in the presentinstance, the apron 23 is secured to a rod Q-l which is itself hung from the auxiliary drag roll 17 by a bridle 25, preferably one of said bridles being located near each end of the auxiliary drag rolls. The apron 23 ext-ends sufficiently about the warp on the warp beam so that any lint or foreign matter dropping fro-m the warp above the warp beam shall be deflected and not accumulate upon the warp. 'le apron 23 becomes of' importance because it protects that side of the warp sheet which is not subject tothe action of the scrapers, so that when the warp sheet passes over the auxiliary and main drag rolls and is subjected to the action of the scrapers, as hereinbefore described7 both surfaces of the warp sheet will be clear of lint and other foreign substances.

lhat is claimed is:

1. In a loom, the combination of a hollow drag roll having a longitudinally extending opening to receive lint, dirt, and the like dropped from the warp,- Vand a lint trough extending transversely of the loom in front of said opening in the drag roll and having a scraping edge over which the warp threads pass from the drag roll to the shed forming mechanism.

V2. 1n a loom, the combination of a hollow drag` roll having a longitudinally eX-y tending opening to receive lint and the like, an auxiliary drag roll in front of the hollow drag roll, and a lint trough between the two drag roll/s having, a scraping edge over which the warp threads pass from the hollow drag rollto the shed forming mechanism.

3. In a loom`r the combination of a hollow drag roll having a longitudinally eX- tending opening to receive lint and the like, an auxiliary drag roll in front of the hollow drag roll, and a lint trough between the two drag rolls having two scraping edges over which the warp threads pass from the hollow drag roll to the shed 'forming mechanism.

4. In a loom, the combination of a hollow drag roll having a longitudinally extending opening to receive lint and the like, an auxiliary drag roll in front of the hollow drag roll, and a lint trough between thetwo drag rolls having a scraping edge extending above the longitudinal opening in the hollow drag roll over which the warp threads pass from the way to the shedding mechanism.

5. In a loom, the combination of a hollow drag roll having a longitudinal opening, a lint trough in front of the drag roll and having an upwardly extending warp scraping edge above the opening in the drag roll over which the warp threads pass lrom the drag roll 'to the shedding mechanism.

6. In a loom, the combination of a hollow drag roll having a longitudinal opening, a lint trough in front of the drag roll having an upwardly extending warp scrap ing edge above the opening in the drag roll over which the warp threads pass from the drag roll to the shedding mechanism and means for securing the lint trough in position in front of the drag roll.

7. In a loom, the combination of a hollow drag roll having a longitudinal open ing, a lint trough in front of the drag roll having an upwardly extending warp scrap ing edge above the opening in the drag roll over which the warp threads pass from the drag roll to the shedding mechanism and an apron below the lint trough to deflect any falling lint from the warp.

8. In a loom, they combination of a hollow drag roll having a longitudinally extending opening through its cylindrical wall, an auxiliary drag roll in front of the hollow drag roll, a lint trough open at its top and located between the two drag rolls, a scraping edge formed on the lint trough and extending above the opening in the hollow drag roll, and a second scraping edgey on the lint trough ron'tward of the other scraping edge.

9. In a drag roll loom, the combination of a main hollow drag roll having a longi tudinally extending opening for the pas-z` sage of lint and foreign substances de-A tached from the warp sheet, a lint trough made separate from the drag roll and extending transversely ot the loom in front of the opening in the drag roll and having a warp scraper, and means for detachably securing the lint trough above the opening in the main drag roll so that lint scraped from the warp sheet by the warp scraper may fall through the opening in the main drag roll.

In testimony whereof, I have signed my name to this specification.

HARRY A. DAVIS.

Images