US1763926A - Cushioning means for the fallers of gill boxes and intersecting frames - Google Patents

Description

c. GGAuFF 1,763,926

CUSHIONING MEANS FOR THE FALLERS;OF GILL BOXES AND INTERSECTING FRAMES June 17, 1930.

Filed Seph. 22, 1928 v A v r.

Patented June 17, 1930 UNrrn STATES PATENT OFFICE CHARLES eE'eAUrr, or MULHoUsE, ALSACE, FRANCE CUSHIONING MEANS FOR THE FALLER-S F GILL BOXES AND INTERSECTING- FRAMES Application filed September 22, 1928, Serial No. 307,728, and in France October 1, 1927.

The present invention relates to gill frames or boxes with intersecting. fallers.

The invention consists in a cushioning de-' vice to deaden the shock produced at the impact of the fallers upon their rigidslides,

either at their sudden lift or their sudden fall, that is to say either at the moment they enter in the sliver or at the moment when arriving near the drawing rollers, they are suddenly dropped. This impact is a sud- .mation of the parts coming in contact,

which rapidly causes wear and deterioration. It has been proposed, to lessen this important wear, to provide an elastic support for the guiding slides of the gill bars. But this proposition had no success because such disposition could not change the rigid slide in an elastic element and that on theother hand the permanent deformation takes place practically before the inert cushion ing support can react; as a consequence the machine comes in vibration and this lncreases the wear still more, so that the drawback is greater than before.

The present invention has for its object to eliminate said drawback by transforming the shock of the faller upon the slide, in an elastic shock, owing to the special arrange ment of the slide.

The accompanying drawing illustrates diagrammatically by way of example, cer tain forms of embodiment of the invention.

Fig. 1 front elevation partly in section of a gill box with intersecting fallers.

Fig. 2 side elevation partly in section of same, the arrows showing the direction of movement of the fallers M.

Fig. 3 side and end elevation of a guide piece for the gill bars.

Fig. 4 side elevation of a further application of the invention in a gill box.

The slide 17. n receiving the shock of the fallers is not simply formed, as up to now, with a massive prismatic element fixed to the machine frame, but it is provided at the point Z, receiving the shock of the fallers 71 with a light and flexible blade hi for instance a steel blade of about 1 to 2 millimeters thick, fixed at its end Z to the slide a n itself. Instead of a blade, any other elastic material can be used and applied at the spot Z.

In this way the shockof the fallersv will be absorbed and will no more produce a bruising of the contacting surfaces, owing to the bending of the blade and as the'mass of the flexible blade end is very small, its inertia will not be sufficient to produce the bruising of the contacting'surfaces, which would be unavoidable if said mass was more considerable and which is generally the case in the systems actually in use. 7

The same cushioning device can be applied advantageously at the spot p of the" slide Z 2 1'- It is also possible to use, but in a less efficient manner, the old prismatic massive slider, made in one piece, and in which a saw cut m of sufficientdepth has been provided to communicate a relative flexibility at the point of impact; this flexible part must however be of reduced mass, this and its flexibility being two conditions to be" observed.

I Fig. 4cillustrates a somewhat different ap-,

'plication of the invention. The shock" of Up to now the vertical guide element 25 1- ended simply in a rigid hook, to suddenly stop the fallers without interposition of any elastic part.

I claim;

1. In gill boxes with intersecting fallers and upper and lower guide rails for both sets of fallers, longitudinal saw cuts in both lower guide rails of suflicient depth to form a flexible part'of very small mass for taking the impact of the fallers at the end of their fall, the arrangement being such that the space occupied by'the guide rails is not increased at all.

2'. In gill boxes with intersecting fallers, upper and lower horizontal and lateral vertical guide rails for. both sets of fallers,

longitudinal saw cuts in both lower guide -rails of suflicientdepth to form a flexible part of very small mass for taking the impact of the fallers at the end of their fall,

the arrangement being suchthat the space occupied by the guide rails is not increased 7 at all, and flexible blades of small mass see the cured to two vertical guide rails and adapted to take the thrust of the fallers at the end. I

of their ascending stroke.

3. In gill boxes with intersecting 'fallers,

two sets of fallers, upper and lower guide rails for both sets of fallers, and flexible blades of very small mass secured to both lower guide rails at the ends of same upon which the fa-llers hit at the end of their fall, so that the impact of the fallers is taken by said blades, the connection ot'the blade to guide rail being such that the space occupied by the blade and guide rail is not substantially greater than that which the guide rail would occupy alone when it receives' the impact of the fallers itself.

4. In gill boxes with intersecting fallers,. two sets of fallers, upper and lower horizontal and lateral vertical guide rails for both sets of fallers, flexible blades of very small mass secured to both lower guide rails at the ends of same upon which the fallers I hit at the end of their fall, so that the impact of the fallers at the end of their de:

, scendingstroke is taken by said blades, the

connection of the blade to the guide rail,

being such that the space occupied by the blade and guide rail is not substantially greater than that whichthe guide rail would occupy alone when it receives the impact of the fallers itself, and flexible blades of small mass secured to two vertical guide rails and adapted to take the thrust of the fallers at I r the end of their ascending stroke.

In testimony whereof I signed hereunto my name. r i

CHARLES onGAUFF,

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