US2493821A - Protection rod spring - Google Patents

Description

Jan. 10, 1950 H. HoEBER PROTECTION Ron SPRING 2 shegtssheet 1 Filed Dec. 8, 1.945

afa/a INVENTOR Ho eer I L ATrgRNEYs Jan- 10, 1950 H. HOEBER A 2,493,821

' I PROTECTION ROD SPRING 'Filed Dec. 8, 1945 l 2 sheets-sheet 2 INVENTOR ATTORNEYS Patented Jan. 10, 1950 luni-frEnl PATENT lo-Fries y,

' j' ,y t l2,493,821

imormccnoN Rous-BRING HaroldHoebenSou'th Dartmonth,Mass-,' Barbara A OJW. Hueber and'William'TgRead as executors dfrsaid Harold Hueber, deceased. -assgnors, by

' ='xue'sne assignments, to Hoosac 'Mills-'Corporationflostom Mass., a eorporatonloflvlassachuy lippueauon December s, 1945,5seria11N0. 633,729

2 Claims. e 1

This invention relates to a loom, more pan ticularly to the resilient means which is applied to `theprotection "rodupon which the dagger is mounted. f

The protection rod extends lengthwise of the lay of theflocmrand lis usually mounted ina .bearing adjacent either of its ends and alsofmay 'have a center bearing. The .dagger `is .carried by this protection rod while an arm extends from the rod up into'perative relationship'with the binder vof theshiittlebox so-that ifthe shuttle is notfin `position A#in @the box -the -dagger'will not ybe raised and-coneequentlytheloom -Willbang oli. @In order telower the dagger into a 'position so thatjfthe loom 'will bang-off if -the shuttle `does not-enter the'fboxaspring is provided. "This spring yis usually in helical form` and encircles the protection rod at substantially its center. It may be adjusted asto-tension by a collar-which may be-rotated about 'the 'rod 'while vone end 1is I'reld xed :with reference vtuthe lay. "Soilong as the rod is VNin perfect axial alignment throughout its length this sort of spring may operate satisfactorily, but should the rod become somewhat out of axial alignment greater friction is then present in the bearings and considerable binding on the rod at the bearings occurs. When such a condition is present, greater spring tension is required and other diculties are experienced, especially when the loom is operated at high speed.

One of the objects of this invention is to provide resilient action to move the dagger into position to bang off without this spring acting through the long axial length of the protection rod and thereby subjected to irregularities of friction which may develop between the protection rod and its bearings. l

Another object of this invention is to apply resilient action at the location of the point of use of the resilient action so that this resilient action will be less distorted by friction which occurs in the rotation of the protection rod in its bearings.

Another object of this invention is to provide an arrangement so that the spring which acts on the protection rod may be removed without removing the protection rod from its mounting on the lay.

Another object is to provide spring action on the protecting mechanism which may utilize a resilient means which will not crystalline.

With these and other objects in view, the invention consists of certain novel features of construction, as will be more fully described and particularly pointed out in the appended claims.

In the accompanying drawings:

Fig. 1 is Ya sectional -view lillustrating 'a fragmental portl'ronfof a'lay with -the resilientm'eans acting on a protecting `mechanism -in accordance with ythis invention;

`Fi`g. 2 isa'section'online 2-2 of Fig. 1; Y

Fig. 3 Ais a section onsubsta-ntially line 3--3 'of Fig. 1;

Fig. 4 is an elevation of la Vfragmental iportion of'a 'lay equipped with the modified form of resilient means;

Fig -5 is la top "plan view of 'the structure shown 'in-Fig. 4.

"In proceeding with this invention, I remove the coiled `spring which vusual-ly encircles the protection rod which nextends l along the lay /andvapply a'resilient'means to the arm which extends vupwardly' -Vfrom V@the fprotection rod VVto be operatively associated with the back ,binder of ithe shuttIe'bOX. In tthis way the spring acts through a greater 'leveragethan heretofore Vand `closer to the point vofzuse of the 4pressure desired so vthat friction in 'the bearings of the rod will be relatively minor in leil'ect upon the protecting mechanism.

With reference to the drawings, lll'designates the lay having a reed II carried thereby with hand rail I'2 which is secured in position by nut I3. A shuttle box is designated generally I4 and consists of a front wall I5 and a back wall I 6 with a back binder I1 movable through the back wall I6 as set forth more fully in my companion application. The protection rod I8 is mounted in bearings I9 at either end of the lay and also in a center bearing of usual known form. This rod I8 extends upwardly as at 2D and has an arm 2| secured thereto which extends further upwardly and has adjustably mounted therein an abutment '22 which is threaded as at 23 and is held in position by nut 24. This abutment 22 is moved into engagement with the rear surface of the back binder I 1 by resilient means designated generally 25 (see Fig. 1) which will be described in greater detail below. A dagger 26 is also carried by the protection rod I8 and is moved downwardly by the rocking of the rod through the spring means 25 to force the back binder inwardly. The protection rod stop designated generally 29 is provided with its leather cover 30, the stop being mounted by means of bolt 3| through the lay I Il, the same being in a position to engage the dagger 26 so as to prevent its lifting too high. The picker stick is designated generally 32 and the check strap is designated 33, being mounted upon the check strap bracket 3| and movable through the friction members 34, 35, and 36. When this dagger is in its lower position, which Vaccenni occurs when the shuttle is out of the shuttle box I4, it will engage the lip 21 of the frog 28 to move this frog and cause the loom to bang oi in a known manner.

The resilient means for applying pressure on the arm 2I which serves to -follow the back binder I1 as it moves inwardly and to move the dagger into operating position when no shuttle is present in the box,. consists of a bracket 46 Vhaving a bolt 4I extending through the portion 42 vto mount it adjacent bracket 3| and below the back f the shuttle box I4. This bracketv is provided with a boss 43 in which there is a rod 44 mounted by means of nuts 45 on one side of the boss and 46 on the other side of the boss. This rod rotatably mounts an arm 41 at its outer end which is held against sliding oi the end of the rod by binder by a shuttle entering said box to rock said protection rod and consequently said dagger, a

stationary rod attached to said lay, a crank rockably mounted on said rod and extending into engagement with said arm, and a torsion spring lacting throughout the entire operation of the lay for urging said crank into engagement with said a collar 48. This arm has a nger 49 which extends parallel to the axis of its hub which is mounted on the rod 44 and which upon swinging will engage arm 2l which is mounted on the protection rod portion 20. A spring 50 circles rod 44 and is xed to the nut 45 at one end while the other end extends into the hubY of the arm 41. This spring is given suicient'torsion by rotation of the rod before the same is bound firmly into position by the nut 46 soasto cause the arm 41 to apply the desired pressure on the arm 2l of the protection rod. Y

In some cases instead of applying resilient pressure by means of a helically wound torsion spring upon the arm 2|, I may' mount a leaf spring 55 on the check strap bracket 3| carried by the lay I0 Aby means of a resilient plate 56 having an arcuate portion 51 engaging the lay while bolts 58 extend through the doubled back portion 59 of the spring and extend through the .plate 56 into the lay. By the tightening up `of these bolts more or less pressure may be applied to spring the plate 56 so as to rmly bind the leaf spring in place.- At the outer end of the spring 55 rests the protection rod finger 2I which has beenr heretofore described.

arm.

2. In a loom as in claim 1 wherein a bracket adjustably' mounts said .stationary rod onv said lay. Y Y .HAROLD HOEBER.

REFERENCES CITED The following references are ofV record in thel file of this patent: f s

UNITED STATES PATENTS Number Date 403,247 Great Britain Dec. 21, 1933

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