US1994578A - Heddle frame - Google Patents

Description

E. A. GLOOR March 19, 1935.

HEDDLE FRAME Filed NOV. 20, 1935 INVENTOR 51m 12 176 ATTORNEY- Patented Mar. 19 U nnirso stares earsa'r OFFICE '7 Claims.

This invention relates to harness for looms and particularly to that class in which each unit comprises, with heddles, a frame carrying horizontal upper and lowerstrips supported at their ends by the side members of the frame and on which the heddles are strung and horizontal bars between which the strips are arranged and which are supported between the frame side members in screw eyes attached to the upper and lower frame members and to which bars the strips are respectively connected between their ends by spaced hooks, each bar and the corresponding hooks serving to reinforce the (usually thin) corresponding strip against the load of the heddles when such bar happens to be the upper one as the unit is used.

e construction heretofore has been such that if it was required to remove any hook from the rest of the unit this could not be done without taking the frame apart so that the barto which such hook was attached could be shifted endwise sufficiently to clear the hook since the hook was not capable of being uncoupled from the bar in a direction transverse thereof. According to this invention the hook may be removed without disturbing the frame, to wit by uncoupling the hook in the indicated direction, and yet accidental uncoupling of the hook from the bar' or the strip, due to motion of the unit, is obstructed- A further fault with the heretofore existing construction is that the free end of the strip-receiving hook proper of the hook is likely to catch in the strip-penetrated slot of a heddle immediately adjoining the hook and sometimes the vertical edge of such a heddle will engage and be caught in this hook proper due to the heddle turning on its own vertical axis, so that in either case the heddle becomes in effect inter-lockedwith and hence encumbered by the hook or ceases to be entirely free to shift on the strip according to the requirements of the warp thread which it controls, thereby producing faulty weaving. Another object is so to construct the unit that the interlocking of the hook and an adjoining heddle in either of these ways shall be impossible.

In the drawing,

, Fig. 1 is an elevation of a conventional harness frame;

Fig. 2 shows in elevation one corner thereof and two of the three hooks herein set forth;

Figs. 3 and 4 are sectional views each on the line :c-x, Fig. 2, showing two alternative forms of the improved unit;

Fig. 5 is a sectional View on line yy, Fig. 2, showing another alternative form;

Fig. 6 is a view illustrating the manner of removing from its bar the hook shown in Fig. 5 and Figs. '7 and 8 are sectional plan views of alternate forms of said hook shown with a fragmentof said bar. v l E The following parts are those characterizing a conventional harness unitof the class indicatedi The frame, comprising upper and lower horizontal wooden members 1 and the side members 2 consisting of metal strips the stiff horizontal bars 3 supported in spacedscrew-eyes 4 screwed into the members 1; and thefthinspring-metal horizontal strips 5 arranged between saidbars. and penetrating at their ends the members? and held taut by spring clips 6 engaged in eyes in the strips and attached to members 2, being flexible and adapted to be sprung or to yield toward the bar. Strung on thestrips are the heddles 7 which are here of fiat thin steel and have vertical slots '70. somewhat longer than the wide or vertical dimension of the strips and also somewhat wider thanthe latter are thick so as to have slight vertical movability thereon and in any event be free to slidethe'reon:

Three forms of hooks forfcoupling each strip 5 to the corresponding bar areshown in Figs. 3 to 5 according to my invention, all having hooks proper whose crotches open reversely to each other and'receiving the strip and bar between the spaced points of support thereof and each attachable to or removable from the bar and strip without disturbing them except by flexing the stripfltoward the bar and each formed so as to prevent interlocking of the same with either heddle which may adjoin it.

- Hooks 8 and 9 (Figs. 3 and i) are somewhat similar in the following particulars: Each may be generally S-shaped, as by being formed of bent wire; the upper hook proper 8a (or 9a) which receives the bar '3, has means to obstruct free escape of the bar formed by the free end of the hook proper reaching so close to the hook shank that the bar cannot pass between them without distending the hook proper; and the lower and vertically elongated hook proper 81) (or 9b), which receives strip 5, likewise has means to ob.- struct free escapeof the strip formed by the free. end of the hook proper 8bv and a bend 9c of the hook proper 9b reaching so' close to the hook shank that the strip cannot pass between them without distending the hook proper.

The hook 10 (Fig. 5) is shown as a sheet metal stamping. Its upper hook proper 10a; which receives the bar 3, has means to obstruct free escape of the bar formed by a tongue 10a: projecting oppositely to the free end of the hook proper, said substantially parallel, said passage being inclined outwardly and downwardly.

In order to detach the hook 8 or 9 strip 5;

which will yield for the purpose, is first sprung upward and forced past the mentioned obstructing means of the lower hook proper, with incidental distention of the latter, and then the hook is forced upwardly until the bar 3 clears the obstrucing means of its upper hook proper, incidentally distending the same. I

In order to detach the hook l0 strip 5 is first sprung upward and then twisted until its lower edge will enter passage 10s, whereupon it is passed downwardly through the passage, and then the hook is first turned to the position of Fig. 6 rela tively to the bar and lifted clear of the same. The mentioned "interlocking of an adjoining heddle with the hooks proper 8b, 92) or 10b by the upper end of the slot 7a of the heddle catching the extremity of such hook proper is prevented by arranging said extremity out of the range of movement of said slot-end permitted by strip 5. That is to' say, the heddle, and hence said slot end, has its range of movement vertically or horizontally limited by the strip 5, and according to this invention the extremity of the hook proper of hook 8 is above, that of the hook proper of hook 9 is laterally beyond, and that of the hook proper of hook 10 is below such range. In the ordinary construction the extremity of the lower hook proper is but slightly above the top edge of the strip and hence within said range of the top of the heddle slot, thus permitting the interlocking in question.

The mentioned interlocking of anadjoining' heddle with the lower hooks proper due to the vertical edge of a heddle engaging therein may be avoided by forming the material of such hook proper round in cross section as in Fig. 7 rather than rectilinear as in Fig 8. In Fig. 8 if an adjoining heddle skews and its edge enters the lower hook proper it will be caught and held by the corners existing at 11. In the form shown in Fig.-

7 this is avoided by its corners being removed,

' or the material of the hook proper being round in cross section. This feature of my invention is applicable to any hook, whether or not of one of the shapes hereinbefore set forth. I

Having thus fully described my invention what I claim is:

1. A harness unit including, with a horizontal heddle-supporting strip, a horizontal stiff bar above the strip and a frame having means to support the strip and bar each at longitudinally spaced points thereof, a connecting hook arranged between said points of, and having hooks proper whose'crotches are open reversely to each other and respectively receiving, said strip and bar and freely shiftable along the same, said strip being yieldable toward the bar to clear the hook proper receiving the same.

2. A harness unit including, with a horizontal heddle-supportingstrip, a horizontal stiff bar above the strip and a framehaving means to proper whose crotches are open reversely to each other and respectively receiving, said strip and support the strip and bar each at longitudinally spaced points thereof, a connecting hook arranged between said points of, and having hooks bar and freely shiftable along the same, said strip] being yieldable toward the bar to clear the hook proper receiving the same and the hookhaving means to obstruct the free escape of the strip from thelatter hook proper. Y

3. A harness unit including, with a horizontal heddle-supporting strip, a horizontal stiif bar above the strip and a frame having means to support the strip and bar each at longitudinally spaced points thereof, a connecting hook ar-,

hook proper receiving the same and the hook,

having means to obstruct the free escape of the strip and bar from the respective hooks proper.

4. A harness unit including, with. a horizontal heddle-supporting strip, a horizontal stiff bar above the strip anda frame having means to support the strip and bar each at longitudinally spaced pointsthereof, a connecting hook arranged between said points of the strip and bar and disconnectively connected to the strip and having a hook proper receiving'the bar and a tongue projecting oppositely to the free end of said hook propensaid end andtongue both fiank-' ing one side of the bar and being bent oblique- 1y to the plane of the hook substantially Parallel to each other and forming between them an oblique restricted passage for escape of the bar from said hook proper. s v

5. A harness unit including, with a horizontal heddle-supporting strip, a horizontal stiffv vb'ar above the strip and a frame having means to' support the strip and bar each at longitudinally spaced points thereof, a connecting hook arranged between saidpoints of the strip andbar and disconnectively connected to the bar and having a hook proper receiving the strip and a tongue projecting toward'the free end of the hook proper and forming 'With'said end a downwardly and outwardly inclined restricted passage having substantially parallel sides, said passage permit 7. A harness unit including a horizontal strip,

a heddle having a vertical'slot loosely penetrated by the strip, a vertically extending hook having its hook proper free to shift around a vertical axis and loosely receiving the strip, and means, in'-" cluding a frame, supporting the strip and hook,

said hook proper having the surfacesthereof adjoining the strip rounded in the cross-section of said hook proper.

EMIL A. GLQOR.

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