US973126A - Weft-fork mechanism. - Google Patents

Description

.J." NOR-THROP.

WBPT FORK MECHANISM. APPLICATION FILED 1110:.30, 1909.

973,126; Patefited0ct.-18,1910.

T" Illllllllll ll] THE NORRIS PETERS :0, WASHINGTON. n. c

UNIED STATES PATENT OFFICE.

JONAS NORTHROP, OF I-IOPEDALE, MASSACHUSETTS, ASSIG-NOR T0 WILLIAM F. DRAPER,

0F I-IOPEDALE, MASSACHUSETTS; CLARE H. DRAPER AND OLIVER I-I. LANE EXECU- TORS 0F SAID WILLIAM F. DRAIER, DECEASED.

WEFT-FORK MECHANISM.

To all whom it may concern:

Be it known that I, JoNAs NORTHROP, a citizen of the United States, residing at Hopedale, in the county of Worcester and State of Massachusetts, have invented an Improvement in WVeft-Fork Mechanisms, of which the following description, in connection with the accompanying drawings, is a specification, like letters on the drawings representing like parts.

The invent-ion to be hereinafter described relates to looms and more particularly to the weft fork mechanism.

The aims and purposes of the invention are to provide a weft fork mechanism of simple construction which will act efficiently to set in operation some auxiliary means or part when the weft or filling thread fails to be properly laid in the shed. In the present invention the auxiliary means or part adapted to be actuated by the said mechanism is illustrated as an arm connected to the transverse shaft for setting the filling replenishing mechanism in operation to effeet a new supply of filling for the shuttle at desired times, as will be readily understood by those skilled in the art; but, obviously the auxiliary means or part may be any device which it is desired to operate when the filling fails to be properly laid, as, for instance, the loom stopping mechanism.

In the drawings: Figure 1 is a plan view showing an end portion of the loom frame, the lay, and the present invention associated therewith; Fig. 2 is a sectional side elevation of the parts shown by Fig. 1, the transverse shaft being omitted; and Fig. 3 is a like sectional view showing the parts in another posit-ion, one of the fixed side bars being broken away.

The loom frame for supporting the operative parts may be of any usual or desired character provided with a breast beam 1 on the end portion of which, or a part 2 projecting therefrom, is adjustably secured the bracket 3, Fig. 1, said bracket being preferably connected to the supporting part by means of a bolt 4 passing through a slot 5 formed in the bracket or supporting. arm 3.

Projecting forward from the end portion of the bracket 3 are the fixed side arms 6, 6, Fig. 1. Pivotally supported on a stud 7 connecting the outer ends of the fixed side Specification of Letters Patent.

Application filed. August 30, 1909.

Patented Oct. 18, 1910.

Seria1 No. 515,152.

arms 6 is the weft fork 8, it being preferably formed as shown and comprising a series of tines, as usual, and an upwardly extending portion 9. The weft fork as regards its general construction aside from its tail piece may be of any usual or desired form and be hung upon the supporting stud 7 so that when free to swing, it will be maintained in a substantially vertical position or as indicated by full lines in Figs. 2 and 3, so that as the lay beats up, in a manner to be hereinafter explained, the weft fork may be appropriately tilted as usual by the filling laid in the shed by the shuttle. In order to limit the amplitude of movement of the filling fork 8 on its pivotal support 7 the fixed side arms 6 have extending between them at one side of the filling fork a stop 10, Figs. 2 and 3.

The lay 11 may be of usual construction and provided with a grid 12 comprismg a series of arms extending upward from the lay, substantially in line with the reed and appropriately spaced apart, as indicated in Fig. 1, to permit the passage between them of the fork tines. The lay may, at a point adjacent the grid 12, have its upper surface recessed transversely as indicated at 13, Fig. 2, and the grid may be appropriately secured to the lay by suitable means, such as screws, bolts, or the like, which being well understood by those skilled in the art need no further explanation.

From the construction thus far described it will be noted that the weft. fork regardless of its construction is pivotally supported at the outer ends of the fixed side arms, and in case a filling is properly laid in the shed, said weft fork may be tilted by such filling 14, Fig. 2, as the lay beats up. If, however, the shuttle fails to properly lay the filling, either by the filling in the shuttle having become exhausted or having been broken, the tines of the weft fork will pass between the arms of the grid 12 and the weft fork remain untilted, as will be readily' understood.

Extending transversely of the loom is the transverse shaft 15, Fig. 1, held to rock in suitable bearings 16, as usual, and projecting upward from the transverse shaft is an arm 17 Figs. 2 and 3, to which is pivotally connected at 18 the actuator 19. The actuator 19 is of such length and general form as that when the arm 17 on the transverse shaft 16 is in normal position with the loom running under normal conditions, the end portion 20 thereof will be in position to contact with the upper portion of the weft fork 9, in case the weft fork fails to be tilted when the said actuator drops from the position indicated in Fig. 2 to that of Fig. 3. The end portion 20 of the actuator is preferably recessed or shouldered as at 21, though this may be otherwise. The actuator 19 has a toe portion 22 between which and a socket portion 23 in the arm 17 is disposed a spring 24: acting normally to depress the free end 20 of said actuator. Between its pivotal connection with the arm 17 and its free end 20 the actuator 19 is provided with a finger 25 adapted to be en gaged by the head 26 of the weft hammer 2 in case the actuator 19 is positioned for such engagement, as will hereinafter more fully appear. Above the finger 25, the actuator 19 is preferably curved at at or formed as indicated in Fig. 2, to provide an opening or recess 28 into which the head 26 of the weft hammer may enter, in case the actuator 19 is permitted to drop sufficiently for that purpose, the head 26 of the weft hammer 27 being recessed at 29 to form a passageway for the finger 25 under the conditions above noted.

Extending between the fixed side arms are the bridge pieces 30 and 31 which may serve to brace the side pieces, and the bridge piece 30 may serve to support the actuator 19 when it is allowed to drop by the weft fork, Fig. 3.

The head 26 of the weft hammer is provided with an inclined engaging portion 32 which, as the weft hammer moves to the left, Fig. 2, is adapted to' engage the inclined surface 33 formed, preferably, by a dovetailed recess in the end of the finger 25, the construction being such that as the end of the weft hammer moves into engagement with the inclined surface 33 of the finger 25, it will lift the actuator 19 slightly so as to raise the end 20 thereof from the portion 9 of the weft hammer. The head 26 of the weft hammer and the curved portion of the actuator 19 are so formed and related that as the weft hammer moves to the right awa from the finger 25, Fig. 2, the head 26 of the weft hammer will engage the curved portion 34 of the actuator, thereby liftin the end 20 again, the construction being suc that when the weft hammer is to the right, as in Fig. 2, it will support the end of the actuator free from the portion 9 of the weft fork, and, as it moves to the left, the head of the weft hammer 26 will move over the curved portion 34 of the actuator and permit the end 20 thereof to drop before the engagmg portion of the weft hammer contacts with the finger 25, the construction being such so that should the shuttle fail to lay filling on the indicating pick, the weft fork would not be tilted as the lay beats up, and, as the weft hammer moves to the left, the end of the actuator 19 would contact with the portion 9 of the weft fork until the inclined portion 32 of the weft hammer ongages the inclined surface 33 of the finger 25, whereupon the actuator would again be raised out of contact with the portion 9 of the weft fork, and the actuator itself be moved to the left to actuate the transverse shaft 15 or other part to be operated.

Obviously, various changes may be made in the general disposition and form or character of the parts without departing from the spirit of the present invention, which is definitely set forth by the claims.

hat is claimed is:

1. In a weft fork mechanism for looms, the combination of a weft fork, fixed supports by which the weft fork is pivotally sustained, an actuator controlled as to its operative or inoperative condition by said fixedly supported weft fork, and means for moving the actuator only when placed in operative position by the weft fork.

2. In a weft fork mechanism for looms, the combination of a weft fork, fixed supports by which the weft fork is pivotally sustained, an actuator independent of and controlled as to its operative or inoperative condition by said weft fork, and means for moving the actuator when placed in operative position by the weft fork, said means acting to relieve the actuator from weft fork control prior to said movement.

3. In a weft fork mechanism for looms, the combination of a weft fork having an upwardly extending tail piece, fixed sup ports by which said weft fork is pivotally sustained, an arm, an actuator for operating said arm and adapted to be su Jported in operative position by the upwar ly extending tail piece when the weft fork fails to be tilted, and means for moving the actuator independent of the weft fork to operate said arm.

4. In a weft fork mechanism for looms, the combination of a weft fork, fixed supports by which said weft fork is pivotally sustained, an arm, an actuator movable independent of the weft fork for operating said arm and adapted to be supported in operative position when the weft fork fails to be tilted, and means for lifting the actuator from its supported position and moving the actuator to operate said arm.

5. In a weft fork mechanism, the combination of a pivotally mounted weft fork provided with an upwardly extending tail piece, an actuator adapted to be sustained by said tail piece of the weft fork when the weft fork fails to be tilted and to fall when the weft fork is tilted, and means to move the actuator when the said tail piece sustains the actuator.

(S. In a weft fork mechanism for looms, the combination of a pivotally mounted weft fork, fixed supports for said weft fork, an actuator controlled as to its operative and inoperative position by the said weft fork, and a weft hammer having a portion to engage and move the actuator independent of weft fork movement.

7. In a weft fork mechanism for looms, the combination of a pivotally mounted weft fork, fixed supports for said weft fork, an actuator having a finger and controlled as to its operative and inoperative position by the said weft fork, and a weft hammer having a portion to lift the actuator and by engagement with said finger to move the actuator independent of weft fork movement.

8. In a weft fork mechanism for looms, the combination of a weft fork, fixed supports for said weft fork, an actuator having a finger provided with an inclined portion and controlled as to its operative and inoperative condition by said weft fork, and a weft hammer having a head to engage the inclined portion of the finger and then move the actuator independentof weft fork movement.

9. In a weft fork mechanism for looms, the combination of a weft fork, fixed supports for said weft fork, an actuator, and a weft hammer having relatively inclined portions to lift the actuator clear of the weft fork as the hammer moves in one direction and having engaging portions to move the actuator with the hammer as the latter moves in the opposite direction.

10. In a weft fork mechanism for looms, the combination of a weft fork, fixed supports for said weft fork, an actuator and arm operated thereby, and a weft hammer, said weft hammer and actuator having relatively inclined portions to lift the actuator from the weft fork to free the latter, said weft hammer being adapted to move the actuator with it as it moves 1n one direction. 11. In a weft fork mechanlsm for looms,

the combination of a weft fork, fixed supports for said Weft fork, an actuator having afinger and a recess, and a weft hammer having a head adapted to engage the finger to move the actuator when the weft fork fails to be tilted and to pass into the recess to permit the actuator to remain at rest when the weft fork is tilted.

12. A weft fork mechanism for looms comprising fixed side arms, a weft fork pivotally mounted thereon, an actuator adapted to be sustained by the weft fork when filling is improperly absent and to be permitted to drop when filling is properly laid, an arm operated by the actuator, and a weft hammer adapted to engage the actuator and move the arm when the actuator is sustained by the weft fork,

13. A weft fork mechanism for loom, comprising fixed supporting arms, a weft fork pivotally mounted on said fixed supporting arms and having an upwardly extending.

tail piece, an actuator adapted to be sustained in operative position when filling is improperly absent and to drop into inoperative position when fillingis properly laid, and'a Weft hammer for moving the actuator when it is in operative position.

14. A weft fork mechanism for loom, comprising fixed supporting arms, a Weft fork pivotally mounted on said fixed supporting arms and having an upwardly extending tail piece, an actuator adapted to be sustained in operative position when filling is im' properly absent and to drop into inoperative position when filling is properly laid, a weft hammer for moving the actuator when it is in operative position, and a stop to limit the movement of the weft fork in a direction opposite that produced by the filling when properly laid.

In testimony whereof, I have signed my name to this specification, in the presence of two subscribing witnesses.

J ONAS- NORTHROP.

Witnesses:

EVERETT S. 7001), OLIVER II. LANE.

Images