US2404749A - Weaver's shuttle - Google Patents

Description

July 2, 1946. R, Mi 2,404,749

WEAVERS SHUTTLE Filed Oct 15, 1941 INVENTORI RUDOLFTSCHMIDT PER ATTOR EY.

Patented July 23, 1946 WEAVERS SHUTTLE Rudolf Schmidt, Passeck-on-the-Iser, Germany; vested in the Alien Property Custodian Application October 15, 1941, Serial No. 415,025

In Germany June 5, 1940 3 Claims. 1

The known constructions of loom shuttles with hinged two-armed shuttle peg frequently have the drawback that the pirn r spool cannot be held fast on the peg quite safely, because the arms of the peg which approach one another by elastic forces present only a comparatively small elastic force for holding fast the pirn, this fact being due to the length of the arms. It is an object of the invention to improve the support of the pirns on the shuttle peg. According to the invention the arms of the shuttle peg are kept apart by a helical spring arranged between the two peg arms near the hinge or pivot of one or both peg arms on the loom shuttle. Because of the mutual support of the ends of the peg arms a strong elastic action between the peg arms can be obtained even by a comparatively small helical spring, this action being quite suflicient for holding fast the pirns on the shuttle peg with ample forces. For, it is an advantage of the construction according to the invention that the elastic force due to the inserted helical spring, is acting just on a point where the spreading force between the peg arms for holding fast the pirns, has the required effect. Nevertheless this spreading force always has the necessary elasticity to prevent breaking of the pirns (for instance with wood pirns) or to prevent an undesired deformation (for instance with paper pirns). In order to permit the removal of the pirn from the peg provided with supporting surfaces, an abutment is provided for the free end of that peg arm which is not hinged in the shuttle, this abutment permitting the two peg arms to press against one another when the same are raised. According to the invention this abutment may have the form of an inclined gliding or guiding surface for the end of the free peg arm acted upon by the spring, the free end of this arm bearing upon the gliding or guiding surface in such a manner that the peg is held fast, when the peg is lowered, by the action of the helical spring inserted between the two peg arms.

The drawing shows a device according to'the invention by way of example. In Figure 1 a section is represented through that portion of a shuttle where the two armed peg is hinged, showing the mutual support of the peg arms according to the invention; Figs. 2 and 3 represent other modifications of the device according to the invention.

In the hollow part I of the shuttle 2 the peg comprising two arms 3 and 4 is hinged by way of a bolt 5, around which the peg arm' 3 can be tively great force.

turned. The peg arms 3 and 4 are connected with one another at the end 6. In the neighbourhood of the pivot 5 a recess 1 is provided in the peg arm 3, a helical spring 8 being placed in the recess bearing against the free end 9 of the peg arm 4 so that the two peg arms are kept apart in elastic manner. The peg arm 4 is provided with an abutment Ill for holding fast the pirn set upon the peg. The free end 9 of the peg arm 4 cooperates with the inclined gliding or guiding surface II which advantageously is made of a metal plate secured to the shuttle body by means of a pin l2. The bolt l3 serves to limit the lowering movement of the peg.

On turning the peg in the shuttle just described, out of the hollow space f to such an extent that the free end 9 of the peg arm 4 bears against the surface H, the pirn can be set or removed, respectively, However, in the lowered position slipping of the pirn from the peg is wholly prevented because the tWo peg arms are pushed apart by the spring 8 so that the pirn is held fast by the elastic force of the peg arms and moreover by the abutment I 0. The gliding or guiding surface I I not only serves the purpose of pressing the two peg arms against one another to enable shifting of the pirn, but also in the constructional form shown in Fig. 1 holds fast the peg and thereby also the pirn in the lowered position. The peg arm end 9, pushed upward by the spring 8, bears upon the gliding or guiding surface H in such a manner that raising of the peg could be eifected only by pressing the spring 8 i. e. with a compara- As Fig. 1 shows, the force which has to be overcome on raising the peg is at a maximum on the beginning of the raising movement and decreases during this movement. From this fact the advantage results that the peg is held fast with a very great force when the peg is in lowered position i. e. during the time of working.

If the free peg arm 4 has only to hold fast the pirn and does not serve to fix the peg in the lowered working position, constructions as shown by way of example in Figs. 2 and 3 may be recommended. Fig. 2 shows a construction of the peg wherein a leaf spring [4 (or the like), which is arranged separately from the free peg arm 4, is connected with the peg arm 3 and projects with its free end l5 towards the inclined gliding or guiding surface I l. The end l5 of the leaf spring I4 bears against helical spring I6 in the same manner as the free end 9 of the peg arm 4 against the spring 8. In order to prevent interference without any difficulty.

between the peg arm 4 and the leaf spring M the peg arm 4 passes through an aperture ll of the leaf spring l4. The function of the shuttle corresponding to Fig. 2 is analogous to that of Fig, 1 with the difference that the two objects, viz. holding fast of the pirn and fixing of the peg in the lowered position are distributed in the constructional form-shown---in Fig. to-thepeg arm 4 and the'l eaf sprihgl l whereas in" the construe tional form according to Fig. 1 both objects are fulfilled by the peg arm 4 alone.

According to Fig. 3 an am Hi advantageously Z-shaped is provided, said arm being pivoted at one end upon a bolt I9 and-at the other end #bearlng against a helical spring 20-. I his arm 18 cooperates with corresponding planes on'the bearing 21 so that the pegis kept fast the raised, as well as in the lowered position. In this constructional form the free peg arm 4 also serves only the purpose of keeping the pirn fast on the -'Ijhe.pirn-can-he removed from the-peg when the peg is in the raised position by pressing the free peg arm end-9 against the vertical p'art22 ofgthe arm l8 i r v 'What'I claim is:

1-.-'In -a doom shuttle having a hollow space therein, a peg arm having one end thereof hinged to saidshuttle within said space, a second: peg arm secured to the free portion of said first arm and extending alongsidethe first arm in thedirection otsaid-hinge a helical spring arranged between the peg arms in the vicinity ofsaid hinge, a -lea f-spring extending substantially parallel to and having one'end thereof secured upon said hinged pegarm, a, second helical spring arranged betweenthe hinged-peg arm "and the free end. of saidleaf spring, and a gliding surface cooperating with 'the' free end of said second peg arm through the-medium-of said leaf spring, said gliding surface being inclined relative-to the longitudinal i axis -of the "leaf springand adapted to holdsaid-peg arms in lowered position within said hollowspace.--- r -'2 .--ln-a-loom shuttle having an elongated spindle cavity therein, an elongated spindle pivoted 4 at One end thereof in said cavity, means for limiting the downward rotation of said spindle about said pivot when the spindle is in normal position within said cavity, a resilient arm extending from the free end of said spindle reversely toward said pivot, and abutment means provided with a substantially fiat guiding surface against which the end ofsaid arm slides while the spindle is rotated" out of said cavity, said surface forming an acute angle with the upper portion of said arm, and the point of contact of said arm with" said surface lying on a line disposed at right angles to"- thesurface and passing above said pivot, whereby gradually decreasing resistance will be ofieredto the u pward rotation of said' spindle from its normal position within the cavity to a position outside the cavity.

"3; "Ina'l'oom shuttle having an elongated cavity thereinyan elongated spindle pivoted at one end in said cavity, an arm having one end thereof attached to the free endLof said-spindle. and;extending 'r eversely.along said =s'pindle', a spring normally urgingl said arm away fromsaid spindle toward the .,open end of. saidcavity,..m'eans for limiting .the inward rotation of said spindlenabout saidpivot when thespindle is in normallposition within said cavity, a second. a'mnsecured toathe spindle at a point intermediate.theliingeand the pointof attachment ofsaidlfirstarm,. said sece ond arm extending reversely -along saidlspindle and having the free end thereof. interengageable with the free end of the. first arm when thersec- 0nd arm is moved toward the spindle,.a-second spring :between'the-free endloflsaidmsecond arm and said spindle, and abutment .meansl provided with a substantially iiat guiding surface against which the'free end ofsaidsecond armslides while the spindle is. rotated out of said-cavity,.saidsure face forming an acute angle with the sideofrthe second ar'mlfacing the opn end of..said: cavity, wherebythe second arm is held against: said sec-.- ond spring and said spindle is held against said limiting means within said cavity.

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