US2807284A - Picking motion mechanism for a loom - Google Patents

Description

l 1957 w. F. WOODWARD 2,807,284

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PICKING MOTION MECHANISM FOR A LOOM 2 Sheets-Sheet 2 Filed July 8, 1955 IN VEN TOR.

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2,807,284 Patented Sept. 24, 1957 2,307,284 PICKING MOTION MECHANISM FOR A LOOM Walter Ford Woodward, Kings Mountain, N. C.

Application July 8, 1955, Serial No. 520,765

2 Claims. (Cl. 139-142) The present invention relates to a picking motion mechanism for fly shuttle looms.

The primary object of the present invention is to provide a picking motion mechanism for a fly shuttle loom which is simple in structure, of sturdy construction, economical to manufacture and to maintain, and one highly effective in action.

Another object of the present invention is to provide a picking motion mechanism for a loom which will opcrate at high speeds with lighter and fewer parts.

These and other objects and advantages of the present invention will be fully apparent from the following description when taken in connection with the annexed drawings, in which:

Figure 1 is a partial end view of a loom showing the assembled components of the present invention,

Figure 2 is a front view partially in cross-section on line 22 of Figure 1,

Figure 3 is a greatly enlarged detail view in crosssection on line 3--3 of Figure 1,

Figure 4 is a vertical view in cross-section on line 4-4 of Figure 1, and

Figure 5 is a view in perspective of the linkage of the present invention.

Referring in greater detail to the drawings in which like numerals indicate like parts throughout the several views, the present invention provides a picking motion for a loom having a frame which supports the lower ends of a pair of lay swords 11 and 12, the upper ends of which are connected to the lay 13.

At each end of the lay 13 is one of a pair of opposed Shuttle boxes 14 and 15 between which reciprocates a shuttle 16, shown in dotted lines in Figure 2.

In the shuttle boxes 14 and 15 are reciprocably positioned the picker heads 17 and 18, respectively, each carried upon a respective one of the spindles 19 and 20 for reciprocal motion within its associated shuttle box.

The present invention provides a shuttle throwing mechanism in which the picker heads 17 and 18 are connected together by a connecting rod 21 so that as one moves toward the opposed shuttle box to effect throwing of the shuttle across the lay 13, the other picker head is moved to a position to receive the shuttle in order to be in position to throw it back across the lay 13.

The loom is provided with a rotating pick shaft 22 on which is mounted a pair of cranks 22', each carrying one of a pair of pick balls 23 and 24 for rotary movement about the pick shaft. A pair of pick bats 25 and 26 are pivotally connected by their one ends to the frame of the loom for pivotal movement, and each is struck once by the adjacent pick ball during one revolution of the pick shaft 22.

In Figure 5 it will be seen that the pick bat 25 has its free end secured in a box clevis 27, the upper end of the box clevis 27 being pivotally connected to the lower end of a link 28 which has its upper end pivotally connected to a second box clevis 29 disposed upon one arm 30 of a lever 31. The other pick bat 26 is connected by an identical box clevis 27' and another box clevis 29' and their intermediate link 28 to a second L-shaped lever 32.

Each of the L-shaped levers 31 and 32 has its intermediate portion pivotally connected to the respective one of the lay swords 11 and 12 for rocking movement I about a horizontal axis.

The other arm of the lever 31 is provided with a series of holes indicated by the reference numeral 33 in which is selectively receivable one end of a rod 34, the other end of the rod 34 being pivotally connected to the picker head 17.

The other L-shaped lever 32 is also connected to its adjacent picker head 18 by means of the rod 34'.

Referring to Figures 1 and 3, it will be seen that each of the pick bats 25 and 26 is provided with a pick shoe 35 which is adjustable upon its associated pick bat in order to adjust the stroke of the respective one of the pick balls 23 and 24 and thereby adjust the motion of the respective L-shaped lever. Each of the levers 31 and 32 moves in response to the downward movement of its associated pick bat to pull its connected one of the picker heads 17 and 18 to throw the shuttle 16 across the warp shed into the opposed one of the shuttle boxes 14 or 15.

In Figure 2 the L-shaped lever 32 has just executed its throwing movement and the shuttle i6 is shown leaving the shuttle box 15 on its way to the shuttle box 14 and the picker head 17 has been moved to a. position to receive the shuttle and to execute its throwing movement of the shuttle back across the loom upon the next impact of the pick ball 23 on the pick bat 25.

In use, the present invention eliminates the use of picker sticks, lug straps, and many other parts, and provides a picking motion highly effective in action and one having sturdy parts requiring little or no adjustment and one having long wearing characteristics.

What is claimed is:

1. In a fiy shuttle loom, the combination with a lay, opposed picker heads disposed at opposite ends of said lay, and a lay sword adjacent each picker head, of a mechanism for effecting the reciprocatory movement of said picker heads, said mechanism comprising a pair of pick bats disposed one adjacent each end of the loom and each having one end connected to the loom frame for pivotal movement, a pair of levers each pivotally connected intermediate its ends to the adjacent lay sword, means connecting one of the ends of each of said levers to the adjacent picker head, a rotatable pick shaft, a pair of pick balls carried by said shaft for rotation therewith, each ball engaging the adjacent pick bat, once during each revolution of said pick shaft to effect the re ciprocating movement of the adjacent picker head to throw a shuttle across said lay, and a rod connected by one end to one of said picker heads and by the other end to the other of said picker heads so that as one picker head throws the shuttle across the lay the other picker head moves to a position for receiving the shuttle and throwin the latter back across the lay.

2. In a fly shuttle loom, the combination with a lay, opposed picker heads disposed at opposite ends of said lay, and a lay sword adjacent each picker head, of a mechanism for effecting the reciprocatory movement of said picker heads, said mechanism comprising a pair of pick bats disposed one adjacent each end of the loom and each having one end connected to the loom frame for pivotal movement, a pair of levers each pivotally connected intermediate its ends to the adjacent lay sword, adjustable-means connecting one of the ends of each of said levers to the adjacent picker head, said adjustable means embodying a rod having one end pivotally connected in any selected one of a series of holes in said tation therewith, each ball engaging the adjacent pick bat once during each revolution of said pick shaft to effeet a reciprocating movement of the adjacent picker head to. throw a shuttle across said lay, and another rod connected" by one end to one of said picker heads and by the other end to the other end of said picker heads so that as one picker head throws the shuttle across the lay the other picker head moves to a position for receiving the shuttle and throwing the latter back across the lay.

References Cited in the file of this patent UNITED STATES PATENTS 995,954 Cote et a1 June 20, 1911 1,120,522 Odell Dec. 8, 1914 FOREIGN PATENTS 196,463 Great Britain Apr. 26, 1923 Great Britain Feb. 11, 1932

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