US1674312A - Loom - Google Patents

Description

June 19, 1928.

S. G. BARTOLOTTA LOOM June 19, 1928.

S. G. BARTOLOTTA LOOM Filed March 10,- 1927 2 Sheets-Sheet 2 Ajwumdoz I Patented June 19, E923.

Usa-"r' sEBAs'rIANo G. BARTQLOT'TA, or MIDDLETOVJN, CONNECTICUT, Assrenoa oF ONE- HALF TO noMINrC CAMBRIA Am) CARL F. ANDERSON, BOTH- F n nn seqwn,

CONNECTICUT.

LOOM.

Application filed March 10, 1927. Serialli'o. 174,233.

This invention relates to looms, and particularly to looms for weaving relatively narrow fabrics, especially straps, brakelin ing, belts, ribbon and so forth.

At the present time it is common practice in weaving this type of article to throw the shuttle carrying the bobbin backand forth through the open shed to form the weft or filling, but it will be obvious that in this type of machine the supply of filling thread which may be carriedby the shuttle is limited, and therefore, is exhausted. in a short time-requiring the stopping of the loom until it can be replenished. The time consumed for this purpose is a considerable portion of the time available, thus-cutting down production. To overcome these objections looms have been devised which employ a reciprocating needle for laying the filling thread in relativelyznarrowr fabric-s,

but these devices have been complicated and I have required special loom constructions which necessitate practically a new loom or practically an entire rebuilding of the old loom. I have devised a construction which may be applied to the standard loom constructions and employs a reciprocating needle for laying the'filling or weft thread so that this thread may be taken from a supply sufiiciently large to last for a days run or even longer, and which mechanism is mounted on'the standard lay and is operated by the mechanism associated therewith.

Referring to the accompanying drawings,

Fig.1 is a front elevation of the upper portion of a lay with my improved device applied thereto, a portion of the shed mechanism being also shown. v

Fig. 2 is a similar view of a portionxof this mechanism in an intermediate position.

Fig. 3 is a similar view showing the mechanism in the other extreme position: from Fig. 1.

Fig. 4 is a central section, and 1 Fig. 5 is a vertical transverse section substantially on line 5-5 of Fig. 3.

The top horizontal beam of the lay is-indicated at 10, mounted on the usual lay sword's 1l to swing back and forth in'the usual manner and by the usual mechanism, not shown, to beat the filling by means or" the ree'd12i The warp threads fora certain strip of fabric are indicated at 13 passing longitudinal horizontal through suitable guides 14 0f the harness, 15

by which the alternate threads are alter- This device comprises several-units nately, raised and lowered to. open the Shed which may be wovenat thesame time on the V loom will depend on the length ,ofthe lay,

and therefore, the space available. 'Each unit comprises ablock 16 mounted on the lay and having acurved guideway 17 for a shuttle 18. carrying a bobbin-1'9). The center of the block may comprise semircirc'ular plates 20 having a peripheral: flange-21 under whichone side ofxthe shuttleis guided to. retain it in theguideway, and .theyother 7 side may be guidedxunder overhanging plates 22 and 23. The block and shuttle guide are located at one. side of the :warp threads 13 for a single strip, and on-theop.- po'site side is: located a device for laying the weft or filling threadin the warp. This device compri-ses-aguide or need'le 24 having an eye '25 at its, free end: for passing, of the filling thread 26,- and adjacent its other. end is provide.d..with an, eye 27300 which the thread leadstrom a suitable guide and tension device 28, and to the tension device from thesupply spool- 29:. The needle is mountedon, a reciprocating bar 30 by means of an upright support 81, and the connection between then-needle and this supportv passes? through an clon gated slot 32' in the block'- tor the. next unit so thatthe support 31- andtheneedl bar 30 are located. at the rear side of the blocl The needle bar is operated by means of a frame 33 mounted toreciprocate longi tudinally of the lay 'andhavinga. rack 34 meshingwith a gear 135; carriyinganarm 36 I which is so located and to allow the needles to for a certain length of of the frame as guideway in certain timed relation with the ing with a second gear movements of the needle. This is done by gear mechanisms associated with the rack 34 and another rack 39 at the top of the frame. One side of the shuttle'is' provided with a rack 40, and While in the lower portion of its guideway it meshes with a gear 41 mesh- 42 which meshes with the-rack 34. lVhile in the upper portion of its guideway the rack on the shuttle meshes with a gear 43 meshing with an idler 44 meshing with a third gear 45 which also meshes with the upper rack 39. It will, therefore, be apparent that as the frame 33 is reciprocated it will also reciprocate the racks 34 and 39 which in turn will rotate the gears and swing the shuttle up and down across the horizontal center line, or

w the path of movement of the needle 24. As

mechanism by the shuttle moves upwardly the upper gear 43 will engage the rack thereon before the lower gear 41 releases the shuttle so that the shuttle is always in driving engagement with either the gear 41 or the gear 43. The

frame 33=isreeiprocated in certain timed reoperation of the shedding the usual shuttle operating mechanism (not shown) associated with the lay, that is, this frame may be connected to thismeohanism to be reciprocated thereby through the connections 46.

The operation is as follows: The shedding lation with the mechanism is operated to open the shed, as indicated in Fig. 5, in theusual manner, and

the warp for all of the plurality of strips to be woven may, of course, be simultaneously operated by the same shedding mechanism. After the shed is open, if the parts are in the position of Fig. 1 the frame 33 is then moved to the right, as viewed in this figure. "This movement will cause a half revolution ofthe at which time the gear will run into the gap 38 of this rack. This partial revolution of the gear 35 will shiftthe needle bar and needles 24 carried'thereby to the extreme advanced or left hand position, as shown in Fig. 2, that is, with this needle extending through the separated warp threads so that its free end carrying the eye 25 is at the opposite side of'the warp. It will be obvious that during this movement the needle will carry the filling thread 26 through the open shed between the separated warps, as indicated in Fig. 2. During thismovement of the needle the gears 41 and 42 have been moving the shuttle 18 upwardly or counterclockwise in its guideway, as viewed in Fig. 1, butthe as indicated in Fig. 2.

gear by the rack 34 gears are so proportioned that the needle is in the position of Fig. 2 before the upper end of the shuttle reaches the path of movement of the needle. The needle then remains stationary, because of the gap 38 in the'rack'34, while continued movement of the frame 33 will cause the shuttle to pass up between the filling thread 26 and the needle, After the shuttle has passed by the needle, further continued movement of the frame cause the rack 34 to again engage the gear 35 and give it another half revolution. This last half revolution will shift the needle bar 30 and the needles 24 carried thereby to the right and back to their original position, as indicated in Fig. 3, but the frame 33 will be in its extreme right hand-position. From the bobbin thread 47', asindicated in Figs.

3 and 4.

' The shedding mechanism is now shifted to movethe warp again open the'warp in the opposite direction, after whichthe frame 33 is shifted back to the left or the original position-of Fig.v 1. During this backwardmovementthe free end of the needle is again bassed through the open shed, the needle remaining stationary because of the gap 38 in therack 34 while the shuttle is passed downwardly through the loop-in the filling thread at the end of the needle, and the needle is again retracted to .its original position, Fig. 1, Therefore, at each" time the frame 33 is shifted in either direction two filling threads are laid in the warp, and it is held at one edge by the bobbin'thread 47. Therefore, in'efiect theshuttle merely lays an additional warp thread along one edge of the strip being woven. It is, therefore, able to carry sufiicient thread for a very long strip, and as the supply 29 may be any size desired the 1.00m may operate for a long time without requiring replenishing of thethread, and

therefore, the time lost in stoppage of the,

loom for this purpose is reduced to a mini-' threads byeach-other to to be noted from Figs. 1, 2 and 3 V mechanism for "all the' plurality of stripsi's mounted on the lay and moves 'therewith,

, of the warp, a block mounted on the lay profill ' vided with a guideway, a shuttle mounted in said guideway for reciprocating movement across the path of movement of the needle and having a rack, gears mounted on opposite sides of the needle path and adapted to mesh with said rack, and a frame mounted to reciprocate on said lay and including spaced racks meshing respectively with the gears on opposite sides of the needle path.

2. In a loom the combination with means for holding the warp, means for shedding the warp and a movable lay, of a weft laying needle mounted on the lay and adapted to reciprocate through the shed of the warp, a support mounted on the lay having a guideway, a movable shuttle mounted in said guldeway provided with a rack, gears on opposite sides of the needle path adapted to mesh with said rack, and means on the lay for operating the needle and the shuttle in certain timed relation with the shedding mechanism comprising a frame mounted to reciprocate on the lay including racks meshing respectively with the gears on opposite sides of the needle path and means connected to said frame for reciprocating the needle.-

3. In a loom the combination with means for holding the warp, means for shedding the warp and a movable lay, of a weft laying needle mounted on the lay and adapted to reciprocate through the shed of the warp, a support mounted on the lay on the opposite side of thewarp from the needle and having a guideway, a shuttle mounted in said guide ,Way, a longitudinally reciprocable frame on the lay, means operated by said frame for reciprocating the needle and the shuttle, and means for reciprocating said frame in certain timed relation with the shedding mechanism.

4. In a loom the combination with means for holding the warp, means for shedding the warp and a movable lay, of a weft laying needle mounted on the lay and adapted to reciprocate through the shed of the warp, a support mounted on the lay on the opposite side of the warp from the needle and having a guidewa-y, a shuttle mounted in said guideway, reciprocable' racks mounted on the lay, gears meshing with the racks, means operated by the gears for reciprocating the needle and the shuttle, and means forreciproeating thev rackssin certain timed relation; with the operation ofthe shedding I mechanism. a

5. In alloom the combination with means for holding and operating the warp including means: for shedding thejwarp, and-a movable lay, of a weft laying needlemounted to reciprocate'on the lay through the shed of the warp, a block mounted on the lay provided with a guideway, a shuttle mounted in said guideway for reciprocating movement across the path of movement of the thereof, gears in theblock on opposite sides of the needle path and adaptedtomesh with said rack, a frame mounted to reciprocate needle, said shuttle having a rack in one side longitudinally of the lay, racks carried by i the frame having driving connection with the said gears, means operated by the frame for reciprocating the needle, and means for re ciprocating the frame in certain timed relation with the operation of the shedding mechanism.

6. In a loom the combination with means I for holding'the warp, means for shedding thewarp and a movable lay, of a weft laying needle mounted on the lay and adapted to reciprocate through the shedof the" warp,

a shuttle mounted to move backand forth across the path of the needle, a gear having driving connection with the needle for reciprocating the same, a frame mounted to V reciprocate on the lay, a rack carried by the frame meshing with said gear and having agap to permit the needle to remain stationary for a portion of the movement of the frame, and driving connection from the frame to the shuttle. 7

7. In a loom the combination with means for holding the warp and means for shedding the warp, of a weft laying needle mounted on one side of the warp and adapted to reciprocate through the shed of the warp,

a support mounted on the other side of the shed and having a guideway, a shuttle mounted to reciprocate in said guideway across the path of movement of the needle, a reciprocable frame, and driving connections from the frame to the needle and they shuttle.

8. In a loom the combination of a plural ity of spaced warp sheds, means for shedding the warps, supports mounted between the sheds and having guideways, a weft laying needle mounted to reciprocate across 9. In a loom the combination of a plu-.

rality of spaced warp sheds, means for shedding the warps, supports mounted between the sheds and each having a longitudinal slot and a curved guideway extending on opposite sides of said slot, shuttles mounted toreciprocate in said guideways, Weft lay- 'ing needles in said slots and each adapted to reciprocate across a shed, a reciprocating bar connected to the needles, a reciprocating frame hav ng. a pair of racks, a gear mesh- SEBASTIANO e. BARTOLOTTA.

Images