US1874555A

US1874555A - Loose reed stopping mechanism for looms

Info

Publication number: US1874555A
Application number: US567447A
Authority: US
Inventors: Lindsjo Verner
Original assignee: Draper Corp
Current assignee: Draper Corp
Priority date: 1931-10-07
Filing date: 1931-10-07
Publication date: 1932-08-30
Anticipated expiration: 1949-08-30

Description

Aug. 30, .1932. v. LINDSJO LOOSE REED STOPPING MECHANISM FOR LOOKS Filed Oct. 7. 1931 2 Sheets-Sheet INVENTOR. VEENEE L/NDSJO.

WIT/v55 s CLINTON 6. Cosme/v.

A TTORNE Y.

Aug. 30, 1932. v LINDSJQ 1,874,555

LOOSE REED STOPPING MECHANISM FOR LOMs Filed Oct. 7, 1931 2 Sheets-Sheet 2 .W/T/vEss INVENTOR. CLINTON S. Cosme/v. VEENOE L/NDsuo ATTORNEY.

Patented Aug. 30, 1932 UNITED STATES "PATENT OFFICE TION, OF HOPEDALE, ,MASSACHUSETTS, A. CORPORATION OF MAINE LOOSE REED STOPPING MECHANISM FOR LOOMS Application filed ctober 7, 1931. Serial No. 567,447.

This invention relates to looms. and more particularly to a yielding reed and associated devices for stopping the loom when a shuttle becomes trapped in the shed.

Looms of the type herein involved commonly include a lay mounted upon swords for reciprocation towardand from the fell of the cloth being woven and a reed carried between the lay and a hand rail for beating in each successive pick of filling. It is common to mount the reed so that it is capable of yielding when the shuttle fails to pass entirely through the shed and becomes caught or trapped therein. This yielding of the reed prevents the otherwise inevitable breaking out of the warp threads, or ,smash. Various connections from the yielding reed, independent of the reed clamping mechanism, have heretofore been devised for stopping the loom when a shuttle becomes trapped. However, such connectionshavebeen needlessly complicated and expensive and I propose ;to simplify the'structure considerably by controlling the loom stopping devices directly from the yielding reed clampingmechanism. I further propose to provide a mechanism which is more reliable in operation than those hitherto known.

It is accordingly an object of my invention to provide a simplified mechanism for yieldingly clamping a reed in its normal po sition, and a dagger controlled directly by the reed clamping mechanism for operating suitable connections to stop the loom when the reed yields. v

A further object of my invention is to provide a yieldingly actuated clamping bar for normally clamping a reed in position on a lay and a manually operable latch for releasing the clamping bar and latching it in released position.

' A further object of myinvention is to com? bine a yielding reed with a yielding back box plate tothereby eliminate the necessity for the usual protection mechanism.

Other objects will, in part, be hereinafter more specifically enumerated or will become obvious as the description proceeds.

Referring more particularly to the drawings:

Fig. l is a perspective view of certain parts of a loom embodying my invention;

Fig. 2 is a plan view of the mechanism shown in Fig. 1, and

Fig. 8 is a sectional elevation thereof, the parts being shown in theposition they assume when the loom is stopped by a shuttle being trapped in the shed.

As shown, a lay 1 is mounted upon swords 2 for reciprocation toward and from the fell 3 of the cloth being woven. Theswords are provided with extensions 4: for supporting a hand rail 5. A reed 6 is pivotally mounted at its upperedge in a groove 7 in the hand rail and is 'yieldingly clamped against a ledge 9 on the lay by means ofa locking bar 10. This freed and hand rail construction may conveniently be the same as thatdisclosed in my copending application Serial Number 525,073,

filed March 25,1931. The locking bar 10 is carried by spaced arms 11 fixed upon a rocking member herein shown as a'rock shaft 12 extending longitudinally of the lay and mounted in

bearings

13, 13 thereon.

A coil spring 14: surrounding the rock shaft has one end fixed to a bearing 13 and the other end fixed to a collar 15 fast on the rock shaft. The spring thus serves to yieldin turnmounted for longitudinal sliding movements toward and from the front of the loom. However, when the reed yields the dagger is raised to engage the stop and thus, asthe laybeats up, slide the rod forwardly.

The rod 20 operates any suitable, usual connection for stopping the loom, such as link 21, pivoted to shipper lever 22. The shipper lever is pivoted on a stud 23 for movements between. an on position deter- Z VERNER LINDSJO, OF HOPEDALE, MASSAGHUSETTS, ASSIGNOR TO DRAPER CORPORA- Such means comprises, 7

mined by a stop 24 and the ofi position in which it is shown in Fig. 3. Any usual means, such as

rods

25, 26 pivoted on the shi er lever, serve to control the clutch an rake or other power controlling elements of the loom.

It will readily be seen from inspection of Fig. 3 that when a shuttle 27 becomes trapped it may force the reed rearwardly entirely past locking bar 10, in which event spring 14 would return the bar toits normal positlon, thus lowering the dagger 18 out of the path of lug 19 and preventing the initiation of the loom stopping operation. In order to prevent such failure of operation I have provided a latch member for automatically latching the dagger in loom stopping position once it is so positioned. This latch member, 28, is pivoted as at 29 to an arm 30 which may be fixed to the rock shaft, or may be attached directly to the dagger. A spring 31 serves to urge the member 28 forwardly to cause a projection 32thereon to engage over the edge of guide 33 when thedagger, and thereby the latch member, is raised.

. This latch member 28 serves an additional purpose. Being provided with a finger piece 34 the latch is manually operable, when the parts are in their normal position shown in Fig; 1, to rotate the rock shaft 12 and thereby release the locking bar 10, and latch it in released position. This feature is particularly advantageous when it is desired to insert or remove the reed.

The lay is provided, at each end, with a shuttle box comprised of a front wall 35 and V a rear wall 36. It may so happen at times that the shuttle will be trapped partly in the shed and partly in the shuttle box, in which event a smash would occur in spite of the yielding reed mounting. It has been customary to provide an additional stoppm mechanism, commonly of the protector ro t pe, controlled by the presence or absence of the shuttle in the box to prevent damage to the parts when the shuttle does not box properly. However, by combining the yielding reed with a rearwardly yielding back box plateI have eliminated the necessity for this additional stopping mechanism.

It is notnecessary that the entire box plate yield, and I have accordingly provided the relatively rigid outer end portion 37 thereof with a rearwardly yielding inner end portion 38 pivotally connected thereto by means of a spring hinge 39. Thus, when a shuttle is trapped, as shown in Fig. 2, partly in the shed and partly in the box boththe reed and the box plate yield rearwardly and the loom will be stopped by the dagger 18.

The operation of the mechanism is, briefly, as follows: I

The shuttle is picked through the shed while the lay is moving rearwardly and ordinarily has passed entirely through the shed and boxed on the other side by the time the lay has reached its mid position on its forward movement. In this event, the arm 16 passes under lug 17 thus positively holding rock shaft 18, and locking bar 10 in the os1- tion shown in Fig. 1 to thereby securely ock the reed for beating in the pick of filling laid by the shuttle. Dagger 18 passes underneath stop lug 20 and the connections to the power controlling elements are not disturbed.

However, should the shuttle be trapped within the shed, as shown in Fig. 3, it will bear against the reed as the lay beats up and cause the reed to move locking bar 10 rearwardly against the action of spring 14. Latch member 28 will be raised and the projection 32 will hold the same in raised position. Since movement of the locking bar rearwardly serves to raise thedagger 18 to loom stopping position continued movement of the lay forwardly will cause the dagger To operate the connections for stopping the 00m. a

Should the shuttle be trapped partly in the shed and partly in the box both thereed and the back box plate will yield rearwardly, and the loom will be stopped as before.. i It is to be understood that while I have illustrated and described the preferred embodiment of my invention, numerous changes in the details of the construction may be resorted to without departing from the spirit of the invention as defined in the appended claims.

I claim: r a I s 1. In a loom, the combination of a lay with a reed mounted thereon to yield when a shuttle is trapped in the shed, a rocking member mounted on and extending longitudinally ,of the lay, arms on said rocking member car rying a reed lockingbar, a spring acting to normally hold the bar in reed lockingposition but yieldable to allow the reed to move when a shuttle is trapped, means for positively holding the rocking member against movement after the lay has reached a predetermined point in the path of its movement, a dagger carried by the rocking member, and connections operated'b the dagger for stopping the loom when tie rocking member is moved by the yielding of the reed- 2. In a loom, the combination of a lay with a reed .pivotally mounted thereon to yield when a shuttle is trapped in the shed, a rock shaft mounted on the lay and extending 1ongitudinally thereof, a plurality of. spaced arms on said rock shaft carrying a locking bar, a spring acting on the rock shaft to normally hold the bar in reed locking position but yieldable to allow the reed to move when a shuttle is trapped in the shed, means'for positively holding the rock shaft a inst rotation while the reed is beating-in t e filling, a. dagger carried by the rock shaft, and a slidable stopping rod actuated by the dagger for an m MMML? .nmi...ii.a.. aaaanm. v "in a initiating a stopping of the loom when the rock shaft is rotated by the yielding of the reed.

3. In a loom, the combination of a lay with a reed mounted thereon to yield when a shuttle is trapped in the shed, a locking bar engaging the reed and normally clamping it in operative position on the lay, and a manually operable latch carried by the lay for releasing the locking bar and latching it in released position.

4. In a loom, the combination of a lay with a reed pivotally mounted thereon to yield when a shuttle is trapped in the shed, a rock shaft mounted on and extending longitudinally of the lay, arms on said rock shaft carrying a reed locking bar, a spring acting to normally hold the bar in reed locking position but yieldable to allow the reed to move when a shuttle is trapped, and a manually operable latch member carried by the lay connected to the rock shaft for releasing the looking bar and latching it in released position.

5. In a loom, the combination of a lay with a reed mounted thereon to yield when a shuttle is trapped in the shed, a locking bar normally yieldingly holding the reed in operative position but movable by the reed when a shuttle is trapped, a dagger controlled by movements of the locking bar, connections actuated by the dagger for stopping the loom when the locking bar is held out of reed locking position, and an automatically operating latch for holding the dagger in loom stopping position independent of the movement of the. lay once it is so positioned.

6. In a loom, the combination of a lay with a reed mounted thereon to yield when a shuttle is trapped in the shed, a dagger movable from loom running to loom stopping position by the yielding of the reed, and v a separate latch member automatically latching the dagger in loom stopping position upon its movement thereto by the reed.

7. In a loom, the combination of a lay with a reed mounted thereon to yield when ashuttle is trapped in the shed, a rocking member mounted on and extending longitudinally of the lay, arms on said rocking member carrying a reed locking bar, a spring acting to normally hold the bar in reed locking position but yieldable to allow the reed to move when a shuttle is trapped, a loom stopping dagger moved to stopping position by movement of the locking bar, and an automatically operating latch for holding the locking bar in released position and the dagger in loom stopping position.

8. In a loom, the combination of a lay with a reed mounted thereon to yield rearwardly when a shuttle is trapped in the shed, and a shuttle box carried by the lay at one end thereof, the shuttle box including a back box plate at least a portionof which is yieldable rearwardly, the reed and the back box plate both yielding, to prevent a smash, when a shuttle is trapped partly in the shed and partly in the box.

9. In a loom, the combination of a lay with a reed mounted thereon to yield rear wardly when a shuttle is trapped in the shed, and a shuttle box carried at one end of the lay, said shuttle box including a back box plate having a rearwardly yielding inner end portion cooperating with the yielding reed to prevent a smash when a shuttle is trapped partly in the shed and partly in the box.

10. In a loom, the combination of a lay with a reed pivotally mounted thereon to yield rearwardly when a shuttle is trapped in the shed, and a shuttle box carried by the lay at one end thereof, said shuttle box including a back box plate having a relatively rigid outer end portion and an inner end portion pivoted to the outer end portion by means of a spring hinge to yield rearwardly,

whereby both the reed and the inner end portion of the back box plate will yield to prevent a smash when a shuttle is trapped partly in the shed and partly in the box.

VERNER LINDSJO.