US2313354A - Loom picker - Google Patents

Description

J. E. MOE

LooM PICKER y March 9, 1943.

INVENTOR.

lffrrzuwwsy Pfg@ `Jew/v EDGAR MOE Filed 001:. 2, 1941 Patented Mar. 9, 1943 UNITED STATES PATENT OFFICE Gates Rubber Compa poration ot Colorado ny, Denver, Colo., a cor- Applicatlon October 2, 1941, Serial No. 413,2 52 2 Claims. (01. 139-159 This invention relates to improvements in loom pickers and has reference more particularly to a loom picker made principally from rubber-impregnated fabric and reenforced to resist disruptive strains.

In every loom the shuttle is reciprocated through the shed, formed by the warp, by mechanical means comprising picker sticks, one of which is positioned on each side of the loom. The picker sticks are interconnected and oscillated by cam mechanisms that give them the proper movement for projecting the shuttle.` Secured to the picker sticks are removable loom pickers so positioned that they receive the end of the shuttle and bring the same to a stop and also impart to it the necessary momentum for the return passage. The continued impact of the shuttles with the loom pickers has a tendency to break them down and considerable difficulty has been experienced in properly designing loom pickers that will resist the disruptive action of the shuttles with the result that the loom pickers are shortlived.

It is the object of this invention to produce a loom picker that dii'ers from similar loom pickers principally in thisl that it is so constructed and reenforced, by means of metal or other reenforcing members that the disruptive strains are more successfully resisted.

Another object of this invention is to produce a picker having the shuttle engaging end of greater density than the remainder of the picker body.

It is well understood that when a vessel such as a cylinder is subjected to internal pressure, it will tend to assume a. circular cross section as this g'ves the greatest area per unit periphery.

In the present invention the loom pic-ker has been so designed that the shuttle engaging end is made cylindrical and is reenforced by a cylindrical reenforcing member, and therefore any strains tending to rupture the picker will be uniformly resisted by the circular or cylindrical reenforcing member.

In order to more clearly describe the invention, reference will now be had to the accompanying drawing in which a picker constructed in accordance therewith has been illustrated, and in which:

Figure l is a side elevation of the improved picker;

Figure 2 is a sect-ion taken on line 2-2, Figure 1;

Figure 3 is a section taken on line 3-3,-Fig ure 2;

Figure 4 is a section cross sectional View through the entire width and height of the plug, taken on line 4-4, Figure 3;

Figure 5 is a side elevation of a slightly modied form;

Figure 6 is an end elevation looking in the direction of arrow 6, in Figure 5; and

Figure '7 is a cross section similar to that shown in Figure 4, but showing a slightly modified form of construction.

The loom picker illustrated is formed principally from rubberized fabric and is provided with an openingl I 0 of the proper size and shape to receive the picker stick which has been shown by dot and dash lines in Figure 1 and which is designated by reference numeral I I.

In the embodiment shown, the wall of the picker stick opening is formed by a plurality of layers I2 of rubberized fabric which are wrapped around a core forming the opening. Positioned in front of the fabric layers I 2 is a core I3 formed from a plurality of4 layers of rubberized fabric. The core I3 is secured to the layers I2 by means of a plurality of rubberized fabric layers I4 that are wrappedlongitudinally and entirely enclose the core and the fabric layers I2. After the body oi the loom picker has been built upV in this manner, it is placed in a mould and subjected to pressure whereby the front end is provided with a depression I5 which serves to receive the end of the shuttle. In the embodiment'illustrated opening I5 has been shown circular, but

it may be elongated in a vertical direction as shown in United States Patent No. 2,259,413. The mould is so constructed that the front end of the loom picker is compressed thereby and made y cylindrical to the point designated by reference numeral I6 in Figure 1. When the cross section is decreased the material is naturally compressed and increased in density. A cylindrical metal sleeve II is applied to the cylindrical portion immediately after its removal from the mould and serves as a reenforcing ferrule. The cylindrical metal reenforcing member can be made or the `desired strength to resist the disruptive forces produced by the shuttle. Instead of a metal sleeve I'I, the cylindrical end of the picker can be wrapped with wire or with cord in the manner" indicated by reference numeral I8 in Figures 5 and 6. In the embodiment illustrated in Figures 1 to 6 the core is formed from a plurality of layers of rubberized fabric extending transversely in a vertical direction. The

reason `for making the core in this manner is to facilitate the manufacture. It is possible, however, to employ a spirally wound core formed from a roll of rubberized fabric as shown in Figure '7 and designated by reference numeral I1. The spiral core will still further add to the strengthof the picker but will also increase the diiculty and expense of manufacturing the same.

From the above description it will be apparent that a loom picker constructed as shown and described will be highly resistant to disruptive strains. The high density of thecompressed material at the shuttle engaging end and the circular reenforcement produces a picker that will ontlast isimilar pickers of ordinary construction. Since rubber composition of the kind employed in the picker tends to return to its original form after compression, to a limited extent, but quite slowly, the material will engage the surrounding. reenforcing members with considerable force whereby the material will be retained under considerable compressive strains at all times.

Having described the invention what is claimed a's new is:

l. A loom picker comprising a body of resillent rubber containing material and of normally rectangular cross section in a plane perpendicular to its longitudinal axis, the body having an opening near one end for the reception of a picker stick, the other end having a recess for the reception of a. shuttle end, the end having the recess being changed in shape by compression from one of rectangular to a substantially circular cross section in planes at right angle to the axis of the picker, and means for maintaining the cylindrical end of constant cross sectional area during operation, comprising a substantially inextensible band surrounding the cylindrical portion in close engagement therewith.

2. A loom picker comprising a body composed principally of rubber impregnated fabric, the body having an opening near one end for the reception of a picker stick, the other end of the body having a. recess for the reception of a shuttle end, the body being normally of rectangular cross section in planes perpendicular to its longitudinal axis, that end of the body containing the recess being changed in shape from one of rectangular to one of circular cross section in planes perpendicular to the axis of the body, and a cylindrical metal ferrule surrounding the portion of circular cross section and positioned in close contact with the surface thereof for maintaining the cross sectional area constant during operation. l

JOHN EDGAR MOE.

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