US2135664A - Loom shuttle - Google Patents

Description

NOV. 8, 1938. W` R HEWTON 2,135,664

LOOM SHUTTLE Filed Sept. 4, 1937 FIG. 111:

INVENTOI2. WML/3M P. HEM/rom er Puf/mf ATTOQNEY.

Patented Nov. 8, 1938 PATENT OFFICE 2,135,664 vLooM SHUTTLE William R. newton, Philadelphia, Pa., assigor to Collins & Aikman Corporation, Philadelphia., Pa., a corporation of Delaware Application september 4, 1937, serial No. 162,446 v e claims (01.139-207) This invention relates to improvements in shuttles and more particularly to improvements in automaticallyreplenished shuttles of the bobbinohanging type.

An object of my invention is to provide a shuttle body which will prevent weft breakage or smashes incident to replenishment.

Another object of this invention is to provide a strong standard type of shuttle, capable of vertical replenishment and which will permit a substantially exhausted or partially filled bobbin to be ejected by replenishing mechanism, but which will facilitate proper positioning of the full bobbins between the bobbin-supporting clamps.

VThese and other objects of this invention will becomereadily apparent from a consideration of the following description and illustrations in which;

Fig. I is a top view of a shed-shaped shuttle made in accordance with my invention.

Fig. II is a top view of the shuttle blank.

Fig. III is a sectional view on line A--A of Fig. II.

Referring to the drawing, it will be seen there is illustrated a shuttle I of the bobbin-replenishing type provided with tips 2, bobbin head guide cam 3, bobbin clamps 4, threading block 5 which may include tensioning means, tension brushes 6 and full bobbin 1. The foregoing may be of conventional construction. My improvement resides in a shuttle body l wherein the bottom of the shut- `tle is especially constructed to permit normal ejection of exhausted bobbins but to prevent undesirable pivotal or other movement of the bobbin incident to replenishment with resultant broken weft threads or failure to thread. My improvement, while not restricted to double shuttle weaving, is exceedingly useful with replenishing mechanism of the type set forth in co-pending application, Serial No. 750,626, in which some difficulty may be experienced in controlling the bobbin through the long stroke incident to replenishing a shuttle in the lower compartment. A preferred use of my shuttle is in a loom which is stopped upon weft breakage.

The shuttle body of my improvement carries projections 9 and l0 on the sides and integral with the shuttle blank which function as obstructions for a full bobbin and prevents the newly inserted bobbin from passing through the shuttle or from undesirable pivotal movement in the clamps 4. The projections 9 and l0 form a narrow portion H in bobbin discharge passage l2 as shown in Fig. II. Projections 9 and l0 permit the passage of a partially exhausted bobbin for normal horizontal or vertical bobbin transfer. One such projection may be suiiicient, although I prefer to use a pair, as shown. If the rings 8 on the bobbin head are not properly seated in the clamps in prior art constructions, the free end of the bobbin can swing downwardly and break the thread. It may also swing upwardly after swinging downwardly and fail to thread through the shuttle box. If the shuttle is picked with the bobbin in either of these positions, breakage of the bobbin or shuttle, or injury to the warp shed, will result. The shuttle body, according to my improvement, avoids these dangers. It is to be understood that the built-up portion of the shuttle is not so close to the thread on a properly seated bobbin to interfere with the drawing-off of the thread from the bobbin and that a partially full bobbin can be ejected. 'Ihe strengthening of the shuttle, according to this invention, is also of major importance as the majority of shuttles are made of wood. Aluminum, bakelite, impregnated canvas and other shuttles are contemplated to be within the scope of this invention.

Having described my invention and desiring to be restricted only by the scope of the appended claims, I claim:

1. In an automatically replenished type of shuttlc, bobbin clamping means and a thread guiding means at opposite ends thereof, side walls connecting the ends to form a bobbin slot and a projection on the side wall for obstructing the passage of the wound mass of thread on a full bobbin through the shuttle during normal replenishing insertion, said projection being so proportioned as to be clear of the normal path of ejection of the wound mass of thread on a partially exhausted bobbin.

2. In an automatically replenished type of shuttle, bobbin clamping means and a thread guiding means at opposite ends thereof, side walls connecting the ends to form a bobbin slot and a pair of projections, one on each side wall, for obstructing the passage of the wound mass of thread on a full bobbin through the shuttle during normal replenishing insertion, said projections being so proportioned as to be clear of the normal path of ejection of the wound mass of thread on a partially exhausted bobbin.

3. In an automatically replenished type of shuttle, bobbin clamping means and a thread guiding means at opposite ends thereof, side walls connecting the ends to form a bobbin slot and a projection integral with the side of the shuttle and extending laterally in a plane below the plane of the clamping means for obstructing the passage of the wound mass of thread on a full bobbin through the shuttle during normal replenishing insertion, said projection being-so proportioned as to be clear of the normal path of ejection of the Wound mass of thread on a partially exhausted bobbin.

4. In an automatically replenished type of shuttle, bobbin clamping means and a thread guiding means at opposite ends thereof, side Walls connecting the ends to form a bobbin slot and means on the shuttle extending a portion of the length of the bobbin slot for obstructing the passage of the Wound mass of thread on a full bobbin through the shuttle during normal replenishing insertion, said obstructing means being so proportioned as to be clear of the normal pathfof ejection of the wound mass of thread on a partially exhausted bobbin. g 5. In an automatically replenishedY type uof shuttle, bobbin clamping means and a thread' guiding means at opposite ends thereof, side Walls connecting the ends to` form a bobbin slot and a pair of projections extending a portion of the Vshuttle, bobbin clamping means and a thread guiding means at opposite ends thereof, side Walls connecting the ends to form a bobbin slot and a 4 projection integral with the side wall of the shuttle and extending laterally in al plane below the plane of the clamping means for a portion of the n length ofthe bobbin slot for obstructing the pas- ;sage of the Wound'rnass of thread on a Yfull bob- Y binl through the shuttle during normal replenish- 1 ing insertion, saidrprojection being so propor- V tioned as to be clear of the normal path of ejecon a partially 20 tion ofthe Wound mass of thread exhausted bobbin. Y

WILLIAM a. HEWTONJ Y

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