US814290A - Stop-motion for circular looms. - Google Patents

Description

PATENTED MAR. 6, 1906.

G` G. HILL.

STOP MOTIONL FR CIRCULAR LOOMS.

AYPLIDATIE {'ILBD 00T. 3. 190i.

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C. G. HILL. STP MOTION FOR GRUULAR LOUMS.

APPLICATION TILED 0ST. 3f l,

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11M/awww No. 814,290. PATENTBD MAR. 1906. C. G. HILL.

STOP MOTIN FOR CIRCULAR LOOMS.

APPLICATION FILED OUT. 3. 1904.

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NG. mgu. f PATBNTED MAR. 5, 1906 U. G. VVEULL, STOP MOTIGN sR cRCULAR Looms.

APPLGATOE FILED WBT. 3, 1904.

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No. 814,299. PATENTBD MAR. 6, 1906 G. G. BILL. STO? QTGE FUR CIRCULAR LOOMS.

AITLIGATIDN PILBD 06T. 3, 1904.

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STOP-MOTION FOR ClRCULAR LOOMS.

Specification of Letters Patent.

Patented March 6, 1906.

' Application tiled Detober S, 1904. Serial No. 227,042,

To all whom t 11u/Ly concern.-

Beit known that I, CHARLES GREY HILL, a subject of the King of Great Britain, and a resident of Daybrook, in the county of Nottinvham, En land,have invented certain new and useful mprovements in Sto -Motions for Circular Looms, of which the fo lowing is a specification.

his invention relates to improvements in circular looms, such as described in the specification of Letters Patent No. 689,490, dated December 24, 1901, and refers more articularly to automatic stop mechanism or such looms.

Owing to the fact that ositively-driven shuttles are employed wit a very limited space between t ein, it is found necessaryto provide mechanism that will at once stop the loom should any one shuttle meet with an obstruction in the shed. Such obstruction is generally caused by a broken warp-thread, which is, owing to the construction of the loom, drawn into the shed by one shuttle and revents the shed from subsequentiy opening or the next following shuttie. An obstruction in the shed, however caused, does serious dama e and entails considerable loss of time if theoom is not immediately stopped; and the object of the present invention is to provide automatic mechanism that will immediately stop the loom when an obstruction occurs.

Referring to the drawings, Figure 1 is a sectional elevation showing part of a loom to which my invention is a plied. Fig. 2 is a sectional elevation, and 1g. 3 a plan, showing a shuttle and the supportin and propelling mechanism for the same. ig. 4 is a side elevation, Fig. 5 a plan, and Fig. 6 a vertical cross-section, of a shuttle. Fi 7 is a sectional elevation, and Fig. 8 a an, showing the mechanism for releasing t e starting-lever of the loom. Fig. 9 is a plan of art of the sectional toothed ring and the positivelyrotated member of the starting-lever-reieasing mechanism. Fig. 10 is a side elevation showing part of the starting-lever-releasing mechanism. Figs. 2 and 3 and 7 to 10, inclusive, are drawn to a larger scaie than Fig. 1. Figs. 4 to 6, inclusive, are drawn to a larger scale than Figs. 2 and 3 and 7 to 10.

Like letters indicate like parts throughout the drawings.

According to this invention the shuttles A, (see Figs. 1 to 3,) which are supported and propelled by jacks B, are each provided with what may be termed an obstruction-detector C, (see Figs. 4 and 5,) which may take the form of a metal blade extending from near the fore end of the base of the shuttle up to near the top of the shed, as shown mor(` cieariy in Fig. 4. This detector C is preferably attached to the projecting fore end of a bar C', which can slide freely into the body of the shuttle A, so that should thc detector C meet an obstruction in the shed it can give Way or stop, while the shuttle continues to advance.

in order to make the bar C' siide as vfreely as possible, it is provided with a slot C, (see Fig. 4,) extending along its length, and is mounted on two rollers C3, mounted on the base or body of the shuttle A, as shown. The sliding bar C is also provided with or connected to a catch C, (shown more ciearly in Figs. 3 and 4,) which normally projects through and enga es with the side of an openin D in a plate This plate D is preferab y hinged at D2 to the base or body of the shuttle A, and the catch C* hoids the free end D3 of this plate down against the action of a spring-actuated pin C5, (see Fig. 6,) acting on its under side, which pin C5 raises the free end D3 of the plate D immediately it is released. The upper end of the detector C may also Work in a slit A, (see Fi s. 5 and 6,) formed in the shuttle-plate A2, W ich is connected to the body of the shuttle by members A3.

When the detector C meets with an obstruction in the shed and is consequently stopped while the shuttle A continues to advance, the catch C4 is, owing to its disposition, immediateiy disengaged from the hinged plate D, which latter is thus released, and its free end DEl is then raised by the sprin -actuated pin C5. This rising movement o the late D when released by a movement of the detector C relatively to the shuttle is utilized to stop the loom throu h the intermediary of mechanism hereina ter described. The rising movement of the piate D in any one of the shuttles em loyed is communicated to the mechanism or releasing the starting-lever by the following means.

Arranged round the exterior oi the shuttleraee (sec Figs. 1, 2, and 3) is what may be termed an annular finger-ring E, which is comprised of a number of segments having their ends journaled in bearings E, secure to the fixed framing E3, so that each segment can be oscillated freely and independently of any of the other segments. Thisiinger-ring ICO IIO

is provided with a number oi 'Vingers E2,which extend inward, so that their free ends occupy a position which is directly over that of the lree ends l)" of the hinged plate l) in each shuttle A. The fingers E2 are placed all round the shuttle-race a less space apart than that. taken up by the lree end D3 of the plate D, so that when. one of the latter' is released and raised, as previouslydescribed, it will always engage one ol' the said lingers E2 and oscillate the corresponding segment ol' the {inger-ring E.

The whole ot the segments comprisin f the linger-ring E are connected to the mec 1anism for releasing the starting-lever, which is preferably arranged as follows: Mounted oosely on the central column P of the loom is a wheel F, (see Figs. 1 and 7 to 10,) which is connected to the driving mechanism so that it is constantly rotated together with the operating cam-rings of the loom. This wheel F constitutes the positively-rotated member and is provided with a number of vertical bolts F', (see Figs. 7 to 9 and 10,) which are carried at convenient intervals in corresponding openings in the rim of the said wheel F. Each of these bolts F is held in its upper or normal position in which they are shown in Figs. 7 to 9 and 10 by a latch F2, (shown more clearly in Fig. 9,) and these latches F2 are pivoted on the upper face of the rim of the wheel F, so that they can move angularly in the plane of rotation of the latter. Each latch F2 is normally held ih a notch in the corresponding bolt F by a spring F3, connected to the latch and wheel F, respectively. Below the wheel F described in a second wheel G, which` is rigidly mounted on the column P and serves to carry certain stationary parts of the apparatus. Between the wheels F and G is a wheel H, which is loosely mounted on the column P. The upper face of the rim of this wheel H is provid ed with ratchet-teeth H, which are situated directly below the bolts F in the running member or wheel F so 'that when a bolt F is released it falls and its lower end enga es with the teeth H in the wheel H, wh'ich Jatter is then connected to the running wheel F and is moved round with it. The lower ends of the bolts F are cut, as shown, so as to engage the teeth H on the wheel H, and in order to insure the bolts F falling as described they may each be depressed by a spring F1 acting on their upper ends.

The wheel H may be supported on antiiiriction-rollers H2, mounted on the fixed wheel G, as shown, so that it can move freely.

Above the wheel F is a toothed ring J, which is comprised of a number of independent segments equal in number to that of the ringer-ring E, previously described. Each segment ofthe ring J, which is provided with ratchet-teeth JG (see Fig. 10) on its lower 4 per part.

edge, is carried by a pair of arms J, which latter are each pivoted to a bracket J 2, carried by a vertical support J, attached to the fixed wheel G. 'lhe free inner ends of each pair o'l` arms J are connected together by a strap J, and the latter are each provided with a lug J 8, which is connected by a hinged or pivoted joint to the lower end of a connecting-link J5, (see Fig. 1,) the upper end of which is conted by a corresponding joint to an arm E on the corresponding .segment of the finger-ring E immediately above it, so that the oscillation of one of the latter, as previously described, de resses the corresponding segment of the toot led ring J.

When one of the segments of the toothed ring J is moved downward, the teeth J, which are formed on its lower edge and more clearly shown in Fig. 10, eneage with the free ends of one or more of the Llatches F2 on the rotating member F and hold said latches. This action moves the latches F2 clear of the corresponding bolt or bolts F', which then fall and engage the teeth H of the wheel H and lock the two together as previously described.

The segments of the ring J may be returned to their upper or normal positions again by springs J7 acting on the arms J. The latter are each carried through an opening in the corresponding vertical supports J3, which limits the extent of their movement.

A movement of the toothed wheel H releases the starting-lever of the loom and immediately stops the loom, preferably as follows: The starting -lever K, (see Fig. 1,) which controls, say, for example, a frictionclutch L, as shown, is held in the on position by a catch-link K', which is pivoted to said lever and is provided with a catch K2 to engage with a stop K3, attached to the fixed framing R. When the catch K2 is released from the stop K3, the lever K is moved into the off position, in which it is shown by a spring K* or weight. The lower end of the lever K, to which the spring K4 is connected, is shown out of its proper relation to the up- The periphery of the wheel H previously described is provided with a camrecess H3, (see Figs. 7 and 8,) in which a proj ection M on a lever M normally rests.V The lower end of this lever M is pivoted to a bracket M2, secured to the fixed framin R, while its tree upper end is connected to a ink M3, (see Fig. 1,) provided with a cam-surface M4, which operates on the lower end of a bolt N, situated at the side of the stop Ka for the catch-link K. Any movement of the wheel H thus moves the upper end of the lever M outward, so that the cam part M* on the link M3 raises the bolt N, and the latter moves the catch-link K clear of the stop K3, thus releasing the starting-lever, which is returned to its normal position again by the IOO spring K" and the loom stopped. Then the toothed wheel H is again released by raising the fallen bolt F', it is returned to its normal position again by a spring H, (see Fig. 8,) While the bolt F is again retained by the springaetnated latch F2 in connection with it. The upper ends of the bolts F are each provided with a loop F, so that thejfr een be raised by inserting a bar, or they may be all connected by any convenient means to a common lever or device for raising them, so that lijf operating said lever or device any bolt or bolts which have fallen may be con- Venientlir raised.

lt will be noted that the segments of the ring J which are connected to the corresponding segments of the finger-ring E, also the wheel Il, are provided with fine teeth, so that there is no time lost, owing to lost motion, in releasing a bolt F and setting up connection between the running member l" and ring ll when one ot the segments of the ring J is depressed. The loom is thus stopped in the shortest period of time possible.

lhat l claim as my invention, and desire to secure by Letters Patent, is

l, ln a circular loom, the combination of a shuttle, meanstor propelling the sa1ne,ayield ing obstruction-detector projection in front of and carried by the shuttle, loomstop mechanism and means for connecting the said detector and loom-stop mechanism; substantialliv as deseril'ied.

i. ln circular loom, the coniliination of a shuttle, means for propelling the same7 an obstruction detector in connection with the shuttle, a spring-actuated plate in the shuttle which is normally held by the detector but is released when an obstruction is met, loomstop mechanism, and means 'for setting up a renner-tion between said plate and loom-stop mechanism, substantially as described.

3. In a circular' loom, the combination of a shuttle, means tor propelling the same, an obstruction-detector in connection with the shuttle, a spring-actuated plate in the shuttle which is normallyT held by the detector but is released when an obstruction is met, a series of iin ers arranged round the shuttle-race for the p ate to engage with, loom-stop mechanism,and ineens for carrying and connecting said lingers to the loom-stop mechanism, substantially as described.

t. ln a circular loom, the combination of a shuttle, means for propelling the saine, obstruction-detector mechanism in connection with the shuttle, a series of fingers arranged round the shuttle-race to set up a connection with the detector mechanism of the shuttle, loom-stop mechanism, and a connection between the latter and the said fingers, substantially as described.

.5. ln a` circular loom, the combination of a shuttle, means for propelling the same, ob-

struction-deteetor mechanism in connection with the shuttle, a series oi' lingers arranged round the shuttle-race to set up a connection with the detector mechanism of the shuttle, a segmental linger-ring, loom-stop mechanism, and connections between the latter and the segments of the linger-ring substantiall \Y as described. Y

6. In a circular loom, the combination of a shuttle, means for propelling the same, obstruction-detector mechanism comprised of a sliding bar carrying a blade in front of the shuttle, a` spring-actuated plate in the shuttle, a catch on the sliding` bar to hold said plate1 a series of lingers arranged round the` shuttleraee to set up a connection with said plate, a. segmental ring to carryY the fingers, loomstop mechanism, and connections between the latter and the sevmentsof the linger-ring, substantially as descril'ied.

7. In a circular loom, the combination ot a shuttle, means for propelling the saine, obstruction-detector n'ieehanism in eonnection with the shuttle, a series of lingers arranged round the shuttle-race to set up a connection with the detector mechanism in theV shuttle, a segmental ring to carry the lingers, a running member, bolts in said member, retaininglatc-hes for said bolts, a` segmental toothed ring to engage said latches, a connection hetween the toothed segments and the segments of the linger-ring, a toothed member which is engaged by a fallen bolt, and means for releasing the starting-lever operatori by the latter, substantially as'describedx 8. vln a` circular loom, the combination of a. shuttle, means l'or propelling the same, obstruction-deter'tor mechanism in connection With the shuttle, a series of' iingers arranged round the shuttle-race to set up :i connection With the detector mechanism in the shuttle, a segmental ring to carrir the lingers, a ruiming member, bolts in said member, retaininglatches tor said bolts, a segmental toothed ring to engage said latches, a` connection between the toothed segments and the segments of the finger-ring, a` toothed member which is engaged by a 'fallen bolt provided with a cani part, a cam-lever operated by said eain part, a starting-lever catch, and a connection between the cam-lever and starting-lever catch, substantialllrY as described.

9. ln a circular loom the combination of a. shuttle, means for propelling the same, an ob* struction-detector in the shuttle, a spring-actuated plate which is normally held by the deteetor, a series of Vlingers arranged ronnd the shuttle-race to set up a connection with the plate in the sluit tle, a segmental ring to carry the lingers, s positively-rotated member, bolts in said member, retaining-latches for said bolts, a segmental toothed ring to engage said latches, a connection between the toothed segments and the segments ol the linger ring, a

IOC

toothed member which is engaged by a fallen name to this speeicaton in the presence of bolt provnied Wlth a eem part, a cam-lever two subsorlblng wltnesses.

o )em ad l 'smid fun an at st `I'tinOf-l Ver v f lo t( 5 e C P tf l C e onARLES GRE mnu. catoh, and a eonnectlon between the cam-1e- 5 ver and. Stmtmg-lever catch, substantlally as Wltnesses: Y

descrlbed. CHARLES GILLIARD,

In testimony whereof I have signed my RoBERT WM. WATSON.

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