US1088497A - Lay and shuttle mechanism for narrow-ware looms. - Google Patents

Description

A. WBIMAR. LAY AND SHUTTLE MECHANISM FOR NARROW WARE LOOMS.

APPLICATION FILED DBO. 30, 1911. 1,088,497., Patented Feb. 24, 1914.

3 SHEETS-SHEET 1.

INVENTOR ANDREW WEIMAR E55E5 BY ms ATTORNEYW COLUMBIA PLANOGRAPH 60.. WASHINGTON. D. c.

A. WEIMAR.

LAY AND SHUTTLE MECHANISM FOR NARROW WARE LOOMS.

APPLIUATION FILED DEC. 30. 1911.

Patented Feb. 24, 19M

3 SHEETS-SHEET 2.

gQFNESBES 7G Z INVENTOR ANDREW WEIMA BY H15 ATTORNEYM COLUMBIA PLANOGRAPH C0,, WASHINGTON, D. c.

A. WEIMAR.

LAY AND SHUTTLE MECHANISM FOR NARROW WARE LOOMS.

APPLICATION FILED D130. 30, 1911.

Patented Feb. 24, 1914.

a SHEETS-SHEET a.

WITNESSES INVENTOR ANDREW WEI MAR BY HIS ATTORNE Y 6% aim IA Pumonurn CO..VIASNING'|'ON. D- c.

IIII STA ES IiATENT OFFICE.

ANDREW WEIMAR, 0F PHILADELPHIA, PENNSYLVANIA, ASSIGNOR T0 ANDREW -WfElH/IAIR. AND WILLIAM D. \VEIMAR, 015 PHILADELPHIA, PENNSYLVANIA,

A FIB/M.

LAY AND SHUTTLE MECHANISM FOR NARROW-TAKE LOOMS.

IAMSAEWZ.

Specification of Letters Patent.

Patented Feb. 24:, 1914..

To all whom it may concern Be it known that I, ANDREW IVEIMAR, a citizen of the United States, residing in Philadelphia, Pennsylvania, have invented certain Improvements in Lay and Shuttle Mechanism for Narrow-"Ware Looms, of which the following is a specification.

My invention relates to narrow ware looms, and particularly to that class of such looms which have double shuttle races located one above another so as to weave both an upper and a lower series of webs.

The object of my invention is to so construct such a loom as to lessen the vibration of the same and the strain upon the operat ing parts, and thereby to permit the running of the loom at a higher speed than in ordinary looms of this class.

In the accompanying drawings-Figure 1 is an end view of suiiicient of the loom to illustrate my invention; Fig. 9. is a front view of the parts at one end of the loom; Fig. 3 is a plan or top view of the same; Fig. 4 is a rear view of certain parts of the loom, and Fig. 5 is a transverse section on the line a-a, Fig. 4.

In ordinary looms of the type to which my invention relates two shuttle races, disposed one above the other, are employed, both of these shuttle races being carried by one and the same lay and each shuttle race being provided with its proper complement of narrow reeds disposed side by side between intervening sections of the shuttle race, sufficient space being provided between adjoining reeds to accommodate the small shuttles used in narrow ware looms. Upper and lower sets of warps are used, the warps of the lower set passing through the reeds of the lower shuttle race and those of the upper set passing through the reeds of the upper shuttle race. The mounting of both shuttle races and both sets of reeds upon a single lay so increases the weight of the latter as to limit the speed at which it can be vibrated, and this, in a measure, conteracts the increased production due to the weaving of the two sets of webs at one time. The operation of both sets of shuttles by the same shuttle motion also necessitates increased weightof the latter and increased strain on its straps which results in frequent breaking of the latter. In carrying out my invention with the view of overcoming these objections I employ two separate and in dependent lays, each carrying its own shuttle race and set of reeds, and I vibrate these lays in such manner that when one is swinging forward so as to beat up the wefts in its respective webs, the other lay will be swinging backward, its shuttles being passed through the open sheds of warps when the reeds of the other lay are beating up. The lays, being individually lighter than the usual lay with double shuttle race, can be vibrated more rapidly, and the movements counterbalance each other so as to check vibration of the loom and jarring of the parts of the same. The use of the independent and independently operated lays implies the use of independent sets of heddle mechanism for forming each shed of warps but this heddle mechanism may be similar to that usually employed except that the pairs of heddles are independently operated so that one pair may be opening its shed of warps while the other pair is closing the shed of warps which it controls.

In the drawings, 1 and 2 represent the lays, both pivoted at their lower ends, the pivots being concentric and the arms of the lay 2 being goose-necked in their upper portions so as to accommodate the head of the lay l and permit one lay to swing forward as the other is swinging rearward. Swinging movement is imparted to the lays by means of oppositely set crank pins 3 and i on the main driving shaft of the loom, the crank pin 3 being connected to the lay 1 by a rod 5, and the crank pin 4 being connected to the lay 2 by a rod 6, as shown in Fig. 1. The pins 7 whereby these rods are connected to the lays are adapted to curved slots 8 Whereby they may be adjusted nearer to or farther from the fulcrums of the lays and thus rcgulate to a nicet-y the beating up point of each lay. Each lay carries a shuttle race 9 which is composed of sections separated by reeds 10, of which there are as many as there are webs in each set, each shuttle 11 being shot across a reed from one section of the shuttle race to the next and back again.

Either the rack and segment, the reciproeating finger, or any other available type of shuttle actuating mechanism may be employed in my improved loom, but I have selected for purposes of illustration the reciprocating finger type. V

The head 12 of each lay is grooved for the reception of a bar 13 from which project as many properly spaced fingers 1% as there are shuttles to be actuated, the fingers projecting upwardly from the bar 13 of the lay 1 and downwardly from the bar 13 of the lay 2, the groove formed for the recepi the bar 13 in the head 12 of the lay 2 being undercut and the bar having flanges so as to provice for its proper support in an inverted position. Reciprocating motion imparted to each bar 13 in the ordinary manner by means of a crank pin 15 carrying an anti-friction roller which engages a slotted bracket 16 secured to the head 12 of the lay, as shown in Fig. 2, the latter illustrating the mechanism for impart-ing reciprocating movement to the bar 13 of the lay 1 and similar mechanism at the opposite end of the lay 2 being employed for imparting a reciprocating movement to the bar 13 of said lay 2. The crank from which the pin 15 projects is carried by a shaft 17, the latter being mounted in suitable bearings on the head 12 of the lay and being provided with a drum 18 to which are con nected straps 19 and 20, one passing around the drum from left to right and the other from right to left, so that when one strap is pulled downwardly the drum will be moved from right to left and when the other strap is thus pulled the drum will be moved from left to right, rocking movement being thereby imparted to the shaft 1'? and to the crank thereon so as to swing the crank pin 15 back and forth and thereby impart reciprocating movem nt to the bar 13. The lower end of each of the straps 19 and 20 is connected to a slide 21 suitably guided in a frame 22 which is pivoted at its lower end concentrically with the lays 1 and 2 and is connected at its upper end by means of a link 23 to a depending bracket 24 on the head of its respective lay so as to swing with the latter. Bteciprocating movement is imparted to the slides 21 by means of picker levers 25, )ivoted at 26 to a suitable support, the forward end of one of these picker levers engaging a slot- 27 in one of the slides 21 and a slot 28 in the frame 22 and the other pick r lever engaging similar slots in the other slide 21 and in the frame. YVhen the picker levers 25 are vibrated therefore one of the slides 21 will be depressed as the other is liftech and rocking movement will thereby be imparted to the shaft 17 and its crank. Rocking movement is imparted to the picker levers from a double crank 29, each of the pins of this crank being connected to a bar 30 through the medium of a rod 31, which is guided in a yoke 32 on the bar 30, and carries a yoke 33 guided on said bar, a coiled spring 3% being interposed between the two yokes so that a downward thrust of each crank pin is imparted to its respective bar 30 through the medium of this spring, lift being imparted by means of a collar 35 secured to the lower end of the rod 31 below the yoke 32 on the bar 30. By reason of the use of the springs S lthe picker evers are operated with a yielding pressure, thereby reducing the risk of breakage in case the iovement of the shuttles, or of the picker bar, or other portion of the picker mechanism, iieets with an obstruction. One bar 30 is connected to one of the picker levers 25 and the other to the other picker lever, such connection being eifected by means of a swinging head 36 whereby the bar is connected to a collar 3'? on the picker lever.

In order tiat the shuttle races and reeds of tie two lays may closely approacheach other and thereby limit the amount of vertical space which they occupy, l provide securing devices at top or bottom only of each reed, the bottom or LOP being free and hence occupying but little space and being permitted to swing close to the corresponding free portion of the reed of the other lay, as shown in Figs. a and 5. In oracr to insure the rigid fastening of each reed to its respective lay head the top or bottom only, I provide said reed at op or bottom with two bars all spaced some distance apart so as to provide a broad bearing for the clamping plate to, the latter being recessed on its inner face for receiving the bars 41 of the reed and being secured to the back of the lay head 12 by means of a screw 12 at each end of the plate, as shown in Figs. 1 and 5. By inverting the shuttle race and reeds of the upper lay the shuttle races can be brought closely together.

A loom can be constructed in accordance with my invention by the simple addition of the extra lay 2, to an ordinary single lay loom together with accompanying duplication of picker motions and substitution of the double crank 3-4; for the usual single crank. and the loom can be as readily converted to a single loom by removing the lay 2 and its appurtenances.

I am aware that it has been proposed to provide a loom with an operating shaft having double cranks one connected to a swinging lay at the front of the loom on one side of the shaft and the other to a similar lay at the back of the loom on the opposite side of the shaft but my invention is distinct from this in that both of the lays are at the front of he loom and on one and the same side of the operating shaft so that the weaving operation can be conducted by a single attendantstanding at the front of the loom.

I do not herein claim the mechanism for operating the shuttles as that forms the subject of a separate application filed June 12, 1912, Serial Number 703,289.

I claim:

1. The combination, in a narrow ware loom, of an operating shaft, two independently swinging lays each with shuttle race and reeds and both located on the same side of the operating shaft, and means for operating said lays whereby one will swing forward as the other is swinging rearward.

2. The combination, in a narrow ware loom, of an operating shaft, tw independently swinging lays each with shuttle race and reeds and both located on the same side of the operating shaft, one lay having a head located above that of the other lay, and means for operating said lays whereby one will swing forward as the other is swinging rearward.

3. The combination, in a narrow ware 100m, of two independently swinging lays each with shuttle race and reeds, and means for operating said lays whereby one will swing forward as the other is swinging rearward, the bars of one lay being goosonecked to accommodate the head of the other lay.

l. The combination, in a narrow ware loom, of two independently swinging lays each with shuttle race and reeds, one lay having a head located above that of the other lay, and means for operating said lays whereby one will swing forward as the other is swinging rearward, the shuttle race and reeds of one lay depending from the upper head and those of the other lay projecting upwardly from the lower head.

5. The combination, in a narrow ware loom, of two independently swinging lays each with shuttle race and reeds, and means for operating said lays whereby one will swing forward as the other is swinging rearward, the shuttle race and reeds of one lay being reversed in respect to those of the other lay, and one edge of each reed being free so that those of one lay may approach closely to those of the other lay.

6. The combination, in a narrow ware loom, of two independently swinging lays and means for operating the same whereby one will swing forward as the other is swinging rearward, shuttle operating mechanism for each lay having a shaft with drums thereon, reciprocated bars, straps connecting said bars to said drums, and guide members for said bars each swinging with the lay with which it cooperates.

7. The combination, in a narrow ware loom, of a lay with shuttle race and reeds, and a clamping plate for the latter, each of said reeds being confined to the head of the lay at one edge only and having at said confined portion spaced bars which are engaged by the clamping plate whereby the reed is secured to the lay head.

in testimony whereof, I have signed my name to this specification, in the presence of two subscribing witnesse ANDREVV WEIMAR.

Witnesses:

KATE A. BEADLE, HAMILTON D. TURNER.

topics of this patent may be obtained for five cents each, by addressing the Commissioner of Patents,

Washington, D. G.

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