US3012586A

US3012586A - Shuttle binder release mechanism

Info

Publication number: US3012586A
Application number: US72650A
Authority: US
Inventors: Joseph M Budzyna
Original assignee: Draper Corp
Current assignee: Draper Corp
Priority date: 1960-11-30
Filing date: 1960-11-30
Publication date: 1961-12-12
Anticipated expiration: 1978-12-12

Description

Dec. 12, 1961 J, M. BUDZYNA SHUTTLE BINDER RELEASE MECHANISM Filed Nov. 50, 1960 INVEN TOR. Josspu M. BuDzY/vn United States Patent Ofifice 3,012,586 Patented Dec. 12, 1961 This invention pertains to a shuttle binder release mechanism for fly shuttle looms and, more particularly, to that means for controlling the pressure imposed upon a shuttle binder and which means functions in cooperation with a loom crank shaft, lay beam and crank arms or pitmans.

It is a general object of the invention to release the pressure imposed upon the shuttle binder prior to the picking of a shuttle from a shuttle box while still permitting checking pressure to be exerted upon the binder at the time the shuttle is being received in the box.

A more specific object of the invention is to retain the conventional direction of rotation of the loom crank shaft and yet transmit through the instrumentalities functioning in conjunction therewith a motion to accomplish said first mentioned object.

Other objects will become apparent from the following more detailed disclosure.

Various attempts have been made to contr l the binder pressure upon a shuttle by means of the motion trans mitted by the crankshaft to the lay beam via the pitman arms. These attempts and the trials that have been conducted along this line have thus far been quite limited, for to obtain the desired motion of releasing the pressure imposed upon a shuttle prior to its being picked from the shuttle box, it has been necessary that the loom crank shaft be run in a direction reverse to that of conventional rotation.

In accordance with the invention, the binder pressure exerted upon a shuttle when it is received into a shuttle box is withdrawn prior to that shuttle being picked from said box. This is accomplished by a novel means working in conjunction with the crank shaft, lay beam, pitman arms and during conventional rotation of the loom crank shaft. The novel means for withdrawing this binder pressure includes an elongated arm pivotally mounted at one end to a sword and supported intermediate its ends thus allowing it to follow the path of travel taken by the pitman arm during operation of the loom. There is provided on this arm and contiguous with the pivotal mounting means a gear segment in meshing relationship with a second gear segment fixedly positioned on one end of a horizontal shaft that is assembled to and in parallel relationship with the lay beam. There is mounted on this horizontal shaft a resilient means supporting a presser member for imparting sufficient pressure to the binder to brake elfectively the shuttle as it enters the box. Additionally, this shaft supports a laterally extending arm member that oscillates with the shaft and is adapted to overcome the force exerted by the resilient means to release the pressure imposed upon the shuttle by the binder prior to said shuttle being picked from the shuttle box. Releasing of this binder pressure allows the shuttle to leave a shuttle box free of any shuttle arresting pressure and the only forces remaining in contact with the binder are those imposed by the protector rod which are very slight and only impart sufficient pressure to prevent chattering or vibration of the binder while the shuttle is being picked from the box. Therefore, the oscillating motion transmitted to the elongated arm and gear segment, oscillates the horizontal shaft, whose gear segment is in meshing relationship with the first mentioned gear segment, and in timed relationship with the picking motion so that the shaft turns in a direction to withdraw the presser member prior to picking of the shuttle.

The invention will hereinafter be described in greater detail by reference to the accompanying figures of drawing in which:

FIG. 1 is a perspective view showing the device according to the invention with the presser member in contact with the binder.

FIG. 2 is a perspective view showing the device according to the invention with the presser member withdrawn from the binder and a portion of the shuttle as it is being picked from the box. I

Now referring to the figures of drawing FIGS. 1 and 2 illustrate the parts of a loom which function in conjunction with the invention and include a crank shaft If one of the swords 11, a crank arm or pitman 12 for transmitting to the lay beam 13 a fore and aft motion for beating up the filling after it has been inserted into the shed of the fabric. A binder 14 forms the back Wall of the shuttle box which also includes a back box plate of conventional design (not shown), a back box plate extension 15 and a front box plate 16. The novel means for permitting the shuttle 17 to leave the shuttle box free of any shuttle arresting pressure as set forth by the invention comprises an elongated arm 18 pivotally mounted at one of its ends to sword 11 as at 19. Arm 13 is supported intermediate its ends as at 20 to pitman 12 thus allowing said arm to follow the path of travel taken by pitman 12 during actual loom operation. Contiguous with the pivot point 19 arm 18 is provided with a gear segment 21 in meshing relationship with a second gear segment 22. Gear segment 22 is fixedly positioned on one end of a horizontal shaft 23 which during running of the loom is caused to oscillate by the motion transmitted from crank shaft 10 to pitman 12 and thence to the elongated arm 18 and on to shaft 23 by means of the

gear segments

21 and 22. Intermediate the ends of shaft 23 there is rotatably mounted a vertical supporting member 24 which is resiliently controlled by coil spring 25. Supporting member 24 has assembled to it at a point which is in alignment with the binder 14 a presser member 26 for imparting to said binder by means of said spring sufficient pressure to brake shuttle 17 as it enters the shuttle box. Adjacent to supporting member 24 there assembles on and to shaft 23 a laterally extending arm 27 which when shaft 23 turns in the direction of the indicating arrow of FIG. 2, is adapted to withdraw the shuttle arresting pressure from the binder due to the forces exerted by spring 25 against supporting member 24 and presser 26. Thus shuttle 17 as it is picked from the box, FIG. 2, is allowed to move free of any shuttle arresting pressure. When shaft 23 turns in the opposite direction as illustrated by the indicating arrow of FIG. 1, the laterally extending arm loses contact with the vertical supporting member 24 and permits said member and presser 26 by means of the forces of spring 25 to resume its pressing position against binder 14 assuring proper shuttle arresting pressure at the time of entry of shuttle 17 into the shuttle box.

In operation the crank shaft 10 is continually rotating in the direction of the indicating arrows shown in FIGS. 1 and 2 and transmits to the swords through the pitmans a fore and aft motion for beating up the filling which has been inserted into the shed of the fabric.

The oscillating motion imparted to the pitman causes the elongated arm 18, which is pivotally connected to the sword and supported intermediate its ends by said pitman, to follow the path of travel taken by the pitman. Movement in this manner and through meshing of the two gear segments causes shaft 23 to turn in a counterclockwise direction when the crank shaft is moving from bottom to top center, thus withdrawing the presser mem- 3 her 26 from contact with binder 14 and allowing the shuttle 17 to be picked from the box free of any shuttle arresting pressure.

When the crank shaft is moving from top center to bottom center, the movement referred to above causes shaft 23 to turn in a clockwise direction which in turn allows the presser member 26 to again make contact with the binder 14 and impart a sufiicient amount of pressure to the binder to brake effectively the shuttle as it is being received into the shuttle box.

During normal loom operation a predetermined amount of pressure is acting upon the binders at time of picking to prevent a condition of free floating of said binders and to keep the shuttle in proper alignment to assure satisfactory picking of said shuttle to the opposite shuttle box. Depending on the weaving conditions which prevail, this pressure can be increased or decreased through adjustment to meet the requirements of any particular condition which may present itself.

While one embodiment of the invention has been disclosed, it is to be understood that the inventive concept may be carried out in a number of ways. This invention is, therefore, not to be limited to the precise details described, but is intended to embrace all variation and modification thereof falling within the spirit of the invention and the scope of the claims.

I claim:

1. In a fly shuttle loom having a shuttle, a lay beam, a shuttle box and binder at the end of said lay beam, swords on which said lay beam is rockable and a crank and pitman for oscillating the lay beam, means for applying a biasing motion to the binder at said shuttle box to force it into a position to arrest the shuttle as the latter enters the box which comprises a rod, a spring, means fixed to the rod and engageable with the binder for imparting a force from the spring to the binder and other means for releasing binder pressure upon the shuttle as the latter is picked which includes an arm pivoted to 4 said sword, gear means connecting said arm to the shaft and other means for causing motion of the pitman to be imparted to the arm.

2. A binder release mechanism for fly shuttle looms including a shuttle and lay beam, a shuttle box and binder mounted on the end of said lay beam, a sword and crank shaft interconnected by a pitman arm for imparting fore and aft motion to said lay beam, means for releasing the pressure imposed by said binder to said shuttle prior to its being picked from said shuttle box comprising an elongated arm one end of which is provided with a gear segment, said elongated arm being pivotally mounted adjacent said gear segment to said sword and assembled in parallel relationship to said pitman arm by a supporting means intermediate its ends allowing it to follow the path of travel taken by said pitman arm, a horizontal shaft attached to and in parallel relationship with said lay beam, a second gear segment mounted on said horizontal shaft and in meshing relationship with said first mentioned gear segment, a resilient means mounted on said horizontal shaft for imposing pressure upon said binder and a further means afiixed to said shaft for periodically releasing said binder.

3. The structure of claim 2 wherein said resilient means comprises a coil spring, and which further includes a presser member biased toward said binder by said spring, said further means comprising a laterally extending arm adapted to overcome the force exerted by said spring against said presser member.

References Cited in the file of this patent UNITED STATES PATENTS 1,776,626 Holden Sept. 23, 1930 1,819,943 Catterall Aug. 18, 1931 FOREIGN PATENTS 502,807 France Feb. 27, 1920