US1761621A - Feeler mechanism for looms - Google Patents

Description

June 3,1930. Q H DRAPER 1,761,621

FE ELER MECHANISM FOR LOOMS Filed June 27, 1929 2 Sheets-Sheet l m By 7 AT-i-o'RA/E Y lNI/ENTOR.

June 3, 1930. C DRAPER 1,761,621

FEELER MECHANISM FOR LOOMS IIUIILIII Filed June 27, 1929 2 Sheets$heet .2

BY J

A TT O'RNEY Patented June 3, 1 930 UNIrans ATes PATENT entice TION, OFIHOPEDALE, MASSACHUSETTS, A CORPORATION'OF MAINE FEELER MECHANISM 1 0R LOOMS Application filed June 27,

This invention relates to feeler mechanisms for looms whereby the loom operation is changed when the filling reaches substantlal exhaustion, and the present lnven'tlonis more particularly directed to feeler mechanisms of the side slipping type.

In feeler mechanisms ofthe side slipping type the feeler end or tip is usually provided 1 with a roughened or toothed surface which, by engagement with the filling on detecting beats, prevents movement of the feeler in a direct-ion longitudinally of the shuttle until the filling is substantially exhausted and is no longer capable of holding thefeeler from gitudinallyof the filling carrier or bobbin side slipping movement, whereupon a train of mechanism is set in action to change the loom operation as by causing replenishment of filling. This constant recurring engagement of the roughened or toothed end of the feeler with the filling is liable to injure the latter and in some kinds or characters of fillment-constitutes waste and the constant aim has been to reduce this waste to a minimum, while at the same time providing a sufiicient reserve supply of filling to prevent the for mation of blank or partial picks. 'In feeler mechanisms of the impinging or penetrating type, where the feeler is of thesideslipping character, it has also been proposed to provide a pin or tooth yieldingly mounted on the feeler in an attempt to'prevent side slipping movement of the feeler until the tooth engages the dense surface of the filling carrier or bobbin, at which time the tooth ismoved frontwardly relative to the feeler on Which it is mounted and side slipping action of the feeler ensues.

One of the objects of the present invention is to provide a simple and effective feeler mechanism of the side slipping typewherein .the feeler is characterizedby a pressure receiving or impmging surface extending lonand a tooth rigid with the impinging surface I of the feeler tip of sufficient extension rear-j -wardof the trailing end of thelmpinging surface to hold the feeler from side slipping 1929. Serial No. 374,112.

consists of the feeler tip above recited in which a filling receiving groove is formed between the impinging surface andrigidtooth so that when the filling is exhausted opposite the feeler to one or two layers of filling, the feeler toothwill pick under the one or two layers of fillingand causethe latter to enter the groove and enable thetooth to still retain the feeler from side slipping movement until the filling opposite the feeler liasbecoine fully exhausted. Under these conditions it will be apparent that-the'filling carrier or bobbin maybe provided with a reserve supply offilllng atone side of the feeler engaging portion j thereof whichwill enable a full pick-of'fill- I ing to be'laid inthe shed on the last fiight'of the shuttle and minimize waste.

The invention and novel features thereof will best'be made clear from the following description and the accompanying drawings of one good form thereof. 7 V v In the drawings: Fig. 1 is a plan view showing a feeler mechanism provided with the present invention,

"some of the parts being broken away, and positioned for contact with thefilliug in the shuttle asthe lattermoves frontwardly Fig.2 isasimilar view showing the feeler engaged with the. filling on a detecting beat Fig. 3 is a much exaggerated or enlarged view in'detail showing the feeler tip engaged with aworking supply offilling in the shutt i-l ligrtis a similar view showing the relation of parts when the filling has 'been'exhausted opposite the feelert-oone or two layers; and

Fig. 5 is=a view similar to Fig.1 showing the feeleras having been displaced longitudinally of theshuttle andqthefilling opposite the feeler completely exhausted.

The feelermechanismof the present invention is shown and will 'be'described as incorporated in 'afillin'g replenishing loom, but the filli'ng'repl'enishing mechanism is not herein shown and described because the details thereof form no partof the present invention and are now well understood by those skilled in the art.

The feeler stand 1 is shown as of the box type which may be secured in position by a bolt 2, as usual, and pivotally mounted upon the feeler stand at 8 is the feeler carrier 4 normally under the influence of a spring 5 acting in a rearward direction upon the feeler carrier to move the feeler carrier into feeling position, as indicated in Fig. 1. As shown, the spring 5 has one end connected to the feeler carrier at 6 at one side of its pivotal connection with the feeler stand, and its rear end secured to the rear of the feeler stand at 7, whereby the stress of the spring 5 will swing the feeler about its pivotal support 3 to cause one side of the feeler to contact with a stop 8 mounted on the feeler stand.

The feeler 9 is mounted for movement towards and from the front of the loom on the feeler carrier, and as shown consists of the feeler blade having a frontwardly extending stem 10 passing through a bearing 11 on the feeler carrier and through a rear bearing 12 likewise mounted on the feeler carrier, and interposed between the shoulder 13 of the feeler and the front bearing 11 is a spring 14 normally acting to move the feeler into its rearward feeling position, to which it is limited by a stop or pin 15, as indicated in Fig. 1.

The feeler carrier 4 is provided with an elongated abutment 16 at one side, against which rests the end 17 of a transmitter 18 supported in a bearing 19 for longitudinal movement, the construction being such that should the feeler carrier be swung about its pivotal support 3, the abutment it; will slide along the end of the transmitter 18 and cause longitudinal movement of the latter and through associated mechanism, now well understood, cause initiation of filling replenishment. 7 i

The rear end portion or tip of the feeler comprises a pressure receiving or impinging surface 20 which extends a substantial distance parallel to the surface in the shuttle to be engaged by it, and has a tooth 21 rigid with the feeler and extending only a slight distance rearward of the impinging surface 20, the result being that on a detecting beat with a working supply of filling in the shuttle the rigid tooth 21 will sink slightly into the filling and hold the feeler from side slipping movement, while the impinging surface 20 will take the frontward pressure of the filling in the shuttle and cause frontward movement 7 of the feeler.

ing 24 through which the feeler may extend to feel for the filling, and mounted in the shuttle, as usual, is the filling carrier or bobbin The rigid tooth 21 extends only a slight distance rearward of the flat impinging or pressure receiving surface 20 and, as above stated such tooth is at the trailing end of the pressure receiving or impinging surface, with the result that the penetration of the rigid tooth 21 is slight and of non-injurious effect upon the filling durin normal weaving operations with a working supply of filling in the shuttle.

In the present embodiment of the invention the feeler is shown as displaced longitudinally of the shuttle or given its side slipping movement by the frontward pressure upon the feeler tip, and the penetration of the rigid tooth is only of such extent asto prevent such sic e slipping movement of the feeler until the filling in front of the feeler has become exhausted.

During normal weaving operations with a worki n g supply of. filling in the shuttle, as indicated in Figs. 2 and 3, the rigid tooth sinks into the filling a sutlicient distance to hold the feeler from side slipping movement even though. the feeler on a detecting beat has a tendency for such movement by reason of the frontward pressure of the filling, and the flat pressure receiving or impinging surface 22 takes the frontward pressure of the filling to move the feeler frontwardly on the feeler carrier.

When the filling has been exhausted in front of the feeler to one or two layers of filling, the tendency of the feeler to side slip on a detecting beat causes the filling between the rigid tooth and the pressure receiving or lmpinging surface 20 to be displaced slightly, indicated in Fig. 4, and to enter the groove or recess 22 and effectively prevent side slipplng movement of the feeler by the rigid tooth picking under, as it may be termed. The feeler will thus be held from side slipping movement until the filling has been completely exhausted in front of the feeler, whereupon the feeler will side slip under the frontward pressure, as indicated in Fig. 5, and cause the impinging or pressure receiving surface 20 to be removed from contact with the filling carrier or bobbin.

hen the feeler partakes of its side sli ping movement, as indicated in Fig. 5, by complete exhaustion of the filling in front of the feeler, there still remains upon the filling carrier or bobbin a reserve supply of filling 26 to insure that the last pick of the shuttle prior to replenishment shall lay afull length of filling in the shed under proper tension, the result being that the reserve supply of filling 26 may be placed upon the filling carrier or bobbin in sufficient amount only to insure that the last pick of the shuttle prior to replenishment shall lay a full length of filling in the shed, thereby reducing waste to a minimum.

What is claimed is l. A side slipping feeler mounted for movement towards and from the front of the loom and for swinging movement in a direction longitudinally of the shuttle and having a pressure receiving surface of substantial extent to take the impact of thefilling on detecting beats, and a single tooth rigid with i i the feeler extending a slight distance beyond 7 V the pressure surface at the trailing end thereof to sink into the filling to hold the feeler from side slipping movement until a denuded surface of the filling carrier is presented to the feeler on a detecting beat and there- 7 upon acting as a fulcrum point bearing against the filling carrier to swing the pressure receiving surface from contact with the filling carrier as the feeler side'slips'in the direction of the pressure receiving surface that the rigid tooth may pick under any windings on the filling carrier.

2. A side slipping feeler having a tip comprising a pressure receiving surface to take the impact of the filling on detecting beats, a tooth rigid with relation to the pressure receiving surface at the trailing end thereof to sink into the filling andrhold the feeler from side slipping, movement, and a filling receiving groove between the pressure'surface and the rigid tooth intowhich filling may extend under the side stress of the feeler to hold the latter from side slipping moves ment' until a denuded surface ofthe filling carrier is presented to the feeler on a detecting beat.

3. A side slipping feeler mounted to enter the shuttle and feel for the filling at substantially right angles to the lay movement and having a tip comprising a fiat impinging surface of substantial extent parallel to the surface of the wound mass of filling in the shuttle, a single tooth rigid with the impinging surface to enter the filling on detecting beats and hold the feeler from side slipping movement, and a groove formed in the feeler tip and separating the impinging surface and single rigid tooth that the latter may pick under the single layer of yarn next to the filling carrier and hold the feeler from side slipping movement until the filling is completely exhausted opposite the feeler.

In testimony whereof, I have signed my name to this specification. 1

CLARE H. DRAPER.

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