US2112806A

US2112806A - Shuttle check

Info

Publication number: US2112806A
Application number: US127347A
Authority: US
Inventors: Carl D Brown
Original assignee: Draper Corp
Current assignee: Draper Corp
Priority date: 1937-02-24
Filing date: 1937-02-24
Publication date: 1938-03-29
Anticipated expiration: 1955-03-29

Description

c. D. BROWN SHUTTLE CHECK March 29, 1938.

Filed Feb. 24, 1937 INVENTOR. QEL 0. EEOWN.

ATTORNEY.

Patented Mar. 29, 1938 UNITED STATES PATENT OFFICE I SHUTTLE CHECK ration of Maine Application February 24, 1937, Serial No. 127,347

2 Claims.

The present invention relates to fiy shuttle looms and, more particularly, to shuttle checking devices for such looms.

One object of the present invention is to pro- Vide in a fly shuttle loom having a shuttle box, an improved form of shuttle actuated shuttle checking device. To this end, one feature of the invention resides in a loom having a shuttle checking element supported in a shuttle box, and arranged to be engaged and moved by the shuttle in a path parallel to the path of movement of the shuttle, and means associated with said element to check the shuttle.

In the illustrated embodiment of the invention, shuttle checking elements are mounted at opposite sides of the shuttle box and are arranged for longitudinal sliding movement in paths parallel to the path of movement of the shuttle. Each shuttle checking element is arranged to frictionally engage the walls of stationary guideways formed in the front box plate and the binder to resist movement of the shuttle checking elements.

With .the above and other objects and features in view, the invention will now be described in connection with the accompanying drawing and pointed out in the appended claims.

In the drawing:

Fig. 1 is a plan view of a preferred embodiment of my invention showing a shuttle entering the shuttle box;

Fig. 2 is a view similar .to Fig. l, but showing the shuttle completely in the shuttle box;

Fig. 3 is a view in side elevation; and

Fig. 4 is a view in cross-section taken along the line 4--4 of Fig. 3.

In Fig. 1 there is shown the left hand end of a lay H] which is mounted on the lay swords (not shown) for reciprocation toward and away from the front of the loom in the usual manner. A shuttle box is carried at each end of the lay but only the left hand shuttle box is illustrated herein. The shuttle box is provided with a front member E2 forming the front box plate, and a binder l4 and a lay end It. The lay end It is slotted at l8 to accommodate a picker stick 20, which carries a picker 22 for engaging and picking a shuttle 24.

The front member I2, as shown in Fig. 3, is comprised of a pair of spaced plates '28, 30 formed of steel, iron, or other rigid material. The lower or supporting plate 28 is provided with a pair of projecting lugs 32 having slots through which extend bolts 34 for securing the front member l2 in adjusted position on the lay end lfiand parallel to the path of movement of the shuttle 24. The upper plate 3!] is spaced away from the lower plate 28 by

spacing blocks

36, 38 which are held in place by rivets or other suitable fastenings. The spacing block 36 is wider than the upper plate 30 and its rear face carries a friction strip 40 composed of leather or other friction material. The friction strip 43 is secured to one end of the block 36 by a screw 42 and to the other end by rivets or other fastenings. The friction strip 40 is engaged by the shuttle and operates to assist in partially checking the speed of the shuttle, as will later be described.

The binder I4 is formed of lower and upper

spaced plates

44, 46. The plates at their outer ends are separated by a block 43, which is secured in position by rivets or other suitable fastenings. The block 48 is apertured to receive an eccentric pin 50, which acts as a pivot for the binder I4. By rotating the eccentric pin 50, the binder l4 may be moved toward or away from the picker 22 for purposes which will later be described. The other ends of the

plates

44, 46 are separated by a block 52 secured to the

plates

44, 46, and which is provided with a projection 54. When the binder I4 is swung rearwardly by the incoming shuttle 24, the projection 54 moves a finger 56 which is a part of the usual protector rod type of protection mechanism which need not be disclosed herein. The binder I4 is normally held in the position shown in Fig. 1, by a flat spring 51 secured to the lay end It by screws 58.

A block 60 is secured between the

plates

44, 46 by removable pins 62, 64. The block 60 has secured to its ends and to its inner face a friction covering 66 formed of leather or other suitable friction material. The incoming shuttle 24 first engages the friction surface 66 and swings the binder I4 rearwardly of the loom to move the finger 56 and thereby prevent operation of the protection mechanism. The block 68 cooperates with the block 36 to slow down the shuttle 24 as it enters the shuttle box. The binder M, on which the block 60 is mounted, swings rearwardly, as above described, to retard or check the movement of the shuttle 24 before it strikes a pair of longitudinally moving shuttle checking elements 68, 10.

Referring now to Figs. 3 and 4, which show in detail the construction of the checking element 58, it will be noted that this element moves longitudinally in a guideway formed by the .top and

bottom plates

28, 30 of the front box plate I2. At

the outer end of the guideway, there is provided a bumper 12 formed of leather or other suitable material to act as a stop for the checking element 68. This bumper I2 is secured in position by rivets and may be replaced when it becomes worn. At the other end of the guideway, a similar bumper T4 is secured in position between the top and bottom plates 28, 3B. These bumpers I2, I4 absorb the shock incident to the stopping of the checking element 68 and prevent breakage of parts.

The front checking element 68, which may be formed of iron, brass, or other like material, will now be described in detail. As shown in Figs. 3 and 4, the checking element 68 is composed of a body portion I6 having an upper surface which is in sliding contact with the lower surface of the top plate 30. The body portion I6 is provided with an upstanding flange I8 engaging the inner edge of the plate 30 and the inner edge of the bottom plate 28. The front surface of the body portion is provided with a pair of depending lugs 80 which engage the front edge of the bottom plate 28. The flange I8 and the lugs 80 maintain the checking element 68 in the guideway and prevent sidewise movement thereof. Adjacent to each end of the checking element 63,

there is provided a boss 82 to receive a spiral spring 84 of suitable size and strength. A flat friction plate 86, formed of steel or other suitable material, is interposed between the bottoms of the springs 84 and the top surface of the bottom plate 28, to set up frictional resistance to rela tive longitudinal movement between the checking element 68 and the front box plate I2, longitudinal movement of this flat friction plate 85 relatively to the checking element 68 being prevented by stop members 88 formed at each end of the checking element 68.

The rear face of the upstanding flange 18 is provided with a friction member 90 formed of leather and backed by a flat strip 92 of steel or other rigid material. The steep strip 92 and its leather facing are riveted to the rear face of the flange I8. The outer end of the friction member 90 and steel strip 92 are curved rearwardly beyond the outer end of the checking element 68. The checking element II! in the binder I4 is constructed in the same manner as the checking element 68. The checking element It is provided with a body portion 94, the top surface of which bears against the lower surface of the plate 46. An upstanding flange 96 is formed as a part of the body portion 94 and engages the front edges of the

plates

44, 46. The rear surface of the body portion 94 is provided with depending lugs 98 which engage the rear edge of the bottom plate 44. Each end of the checking element I5 is provided with a boss for receiving the upper ends of springs I02. Interposed between the top surface of the plate 44 and the lower ends of the springs I02, is a friction plate I04 formed of steel, brass, or other rigid material. The plate IE4 is prevented from moving longitudinally relatively to the checking element It! by means of lugs I05 formed at the ends of the element 16. The front surface of the flange 66 is provided with a friction strip I06 backed by a flat strip I08 of steel or other rigid material. This composite strip is riveted to the front face of the checking element in the same manner as the

composite strip

90, 92 is riveted or secured to the checking element 68. The outer end of the composite strip I 06, I08 is curved forwardly away from the front surface of the checking element I0.

In the operation of the device, the shuttle 24, upon entering the shuttle box, engages the stationary friction element 36 on one side, and on the other side engages the friction covering 56 on the block 60. The binder I4, which carries the block 60, is swung rearwardly by the shuttle 24, but sufficient friction is set up against the movement of the shuttle 24 to retard its speed slightly. It will be noted in Fig. 1 that the front face of the checking element I8 is not parallel to the path of movement of the shuttle 24, but is so arranged that when the binder I4 has been swung rearwardly to the position shown in Fig. 2,

it is substantially parallel to the path of movement of the shuttle 24. The checking element 58 is, of course, arranged in parallelism with the path of movement of the shuttle 24. Thus, when the shuttle engages the friction strips 90, Hi5; the

checking elements 68 and I0 attached thereto move longitudinally and parallel to the path of movement of the shuttle against the friction set up between the checking elements and the walls of the guideways formed in the front box plate I2 and the binder I4. The curved ends of the friction members 90, I06 engage the end of the shuttle 24, as shown in Fig. 2, and tend to hold the shuttle in position. When the shuttle 24 moves out of the shuttle box on the next pick, the checking elements 68, i0 will move with the shuttle until they reach the ends of their respective guideways. The shuttle continues its movement out of the shuttle box and the binder I4 returns to the position shown in Fig. 1.

Having thus described my invention, what I claim as new and wish to secure by Letters Patent of the United States is:-

1. In a loom, a shuttle, a lay having a shuttle box at one end thereof, a binder pivotally mounted on said shuttle box, said binder having a guideway arranged to be moved substantially into parallelism with the path of movement of the shuttle, a shuttle checking element slidably supported in the guideway in said binder and arranged, when engaged by the shuttle, to move in a path substantially parallel to the path of movement of the shuttle, a plate associated with said checking element, and springs pressing said plate against the walls of the guideway for frictionally resisting the movement of said element, thereby checking the shuttle.

2. In a loom, a shuttle, a lay having a shuttle box at one end thereof, a stationary member= mounted on one side of the shuttle box and having a guideway parallel to the path of movement of the shuttle, a shuttle checking element slidably mounted in. said guideway for engagement. by the shuttle, a binder pivotally mounted on the other side of the shuttle box and having a guideway arranged to be moved substantially into parallelism with the path of movement of the shuttle, a cooperating shuttle checking element slid-. ably supported in the guideway in said binder and arranged, when engaged by the shuttle, to move in a path parallel to the path of movement of the shuttle, and means associated with each of said elements for frictionally resisting. movement, of said checking element, thereby checking the shuttle.

CARL D. BROWN.