Oct. 8, 1946. J. J. KAUFMANN, JR L00]! SHUTTLE Filed April 12, 1944 I 2, 8,981 Patented Oct. 8;, 1946 2,408,981 UNITED STATES PATENT OFFICE ’ ' ' ‘2,408,981, " L00M SHUTTLE: - Y I. I ~ ' ‘ John J. Kaurmann, Jr., Greenville; s} 04.1. assignor' to- Steel Heddle Manufacturing-Company, Phil‘ adelphia, Pa., a' corporation of Pennsylvania; Application April 12, 1944', Serial No. gamete‘ 4 Claims. ' (c1. 139L220) 1 This‘. invention relates to shuttles for looms, and it relatesvmore particularly to‘ the provision, in automatically threading loom- shuttles, of means for minimizing the tendency of the shuttles to become. unthreaded or- of the ?lling yarn to be come fouled on‘ parts of the thread'i‘ng'block dur ing'the operation of the loom. Fig. 5 is. an underneath plan view,v also em larged, of the front end portion, of said thread ing block. _ I i I _ It should, of‘ course‘; be understood that the dee script-ion and‘ drawing herein are illustrative merely‘, and that various‘ modi?cations and changesmay be made in’ the structureldisclosed In. the shuttles‘ which are used in’ the modern types of" high speed automatic looms, a thread without departin'g'imm the spirit ‘of the invert‘; til-0111' ing block is usually provided! at the'rear end of 10 the shuttle. I Such-threading‘ blocks are made in . Refer?ng to‘the drawing, in'the‘ p‘arti"(:lilai“em;v bodiment of the invention therein shown, the shuttle body It! is preferably made of wood and has the usual bobbin chamber II in which the bobbin I2 is held by the usual means (not shown) for, to be threaded automatically through the 15 whereby it may be readily discharged therefrom threading block, and thence through a side de and a new bobbin substituted as the ?lling runs livery eye, the threading action usually starting out from time to time. on the ?rst pick of the shuttle and being com The shuttle body In is also provided with the pleted on the return pick thereof. usual side delivery eye l3 for the passage of the However in the operation of the loom, partic 20 ?lling yarn M. The threading block l5 com ularly in the modern high speed looms, there is a prises primarily a casting, preferably made of tendency of the ?lling yarn to balloon and to metal, either cast iron or brass, as desired. Said swirl, and also, when reversal of movement of the threading block I5 is mounted in a complemen shuttle, takes place, there is sometimes a tendency tally shaped recess l6 in the rear end of the body of the ?lling yarn to unthread itself by an over 25 portion IU of the shuttle. cast of the yarn, and this often occurs notwith The body portion of the threading block I5 is standing the threading block is primarily de provided with a longitudinal channel I? through signed to prevent the same. which the ?lling thread I4 passes to the side de various shapes and styles and are designed to cause the ?lling yarn, after an empty bobbin has been displaced and a full one substituted there Furthermore it sometimes happens that when livery eye l3 during the weaving operation, an overcast of the yarn takes place a loop is 30 The threading block I5 may be provided with formed which becomes fouled on one of the parts the usual rearwardly extending horn portion l8, of the threading block and results in breaking and an intermediate horn portion l9 extending of the ?lling yarn and consequent stoppage of into the longitudinal thread channel I‘! of the the loom. threading block IE, or the threading block may The principal object of the present invention 35 be provided with other similar portions which is to provide simple, e?icient and inexpensive serve to assist in or bring about the initial thread means for overcoming the tendencies above re ferred to and to insure proper passage of the ?ll ing yarn through the threading block to the side delivery eye. The nature and characteristic features of the invention will be more readily understood from ing of the block, as well as the retention of the ?lling thread therein after the initial threading has been completed. 40 the following description, taken in connection with the accompanying drawing forming part At the front end of the threading block 15, that is the end disposed toward the bobbin, there is provided, on each side of the thread channel IT, a vertical groove or recess 20. Preferably said side recesses 20 extend upwardly from the bot hereof, in which: tom of the threading block to a point below the Figure 1 is a top or plan view of the threading 4.5 top thereof, the casting preferably having a suit end portion of a loom shuttle having a threading able overhang Zl at this point on each side for block provided with means embodying the main features of the present invention; Fig. 2 is a longitudinal central sectional view of 50 the portion of the shuttle shown in Fig, 1; Fig. 3 is a front elevation, enlarged, of the the purpose of guiding the ?lling yarn during the threading operation. In each of the grooves or recesses 20 there is mounted a strip 22 of fur, the hair or ?ber of which is of a relatively ?ne texture. The texture threading block removed from the shuttle; of the fur employed will to a certain extent be Fig. 4 is a side elevation, partly in section, and dependent on the size of the ?lling yarn. also enlarged, of said threading block; and 55 Advantage is taken of the fact that the ?bers > 4 3 or hair ?laments of fur usually extend at an an gle of inclination to the skin 23 which carries the same, and the strips 22 of fur are‘ there fore mounted in the recesses 20 on each side of the thread channel I‘! with the ?bers disposed at a downward inclination (see Fig. 3), and the fibers of each strip 22 of fur are of such length as to extendto iandcontact with the ?bers of the other strip; ‘ ~ ‘ ' By the foregoing arrangement, when the ?lling is once threaded in the threading block IS, the?“ strips 22 of fur between which the ?lling yarn “ passes as it enters the threading block l5 will‘ " 2. In a loom shuttle having a threading block mounted in one end thereof and provided with a longitudinal thread channel through which the ?lling yarn passes from the bobbin to the out let, the threading block having a vertical recess on each side of the thread channel at the en trance end thereof, and strips of fur the skin portions ‘of which are mounted in the aforesaid 1 recesses; and the hair ?laments of ‘which extend from the skin on each side at a downward in " clination. 3. In a loom shuttle having a, threading block mounted in one end thereof and provided with a e?ectively serve to prevent the ?lling yarn~ NY .I longitudinalthread channel through which the from being cast out from the‘ entrance end-Jot‘ ?lling yarn passes from the bobbin to the out the threading block I5 either because’ of the" ‘let, the threading block having a vertical recess on each side of the thread channel at the en ballooning of the same, or through an overcast trance end thereof, and strips of fur the skin when reversal of movement of the shuttle takes vportions of which are mounted in the aforesaid place. Also fouling of overcast loops on horn recesses and the hair ?laments of which are dis members l8 and IQ of the threading block l5 posed-eta downward inclination and respective will be effectively prevented. _ claimz' ‘ - ' . ‘ 1. In a loom shuttle having a threading block mounted inone end thereof and provided with a longitudinal thread channel through which the ?lling yarn passes from the bobbin to the out let, ‘strips‘of fur mounted at the entrance. end of the threading block, the hairv?laments of said ly contact the hair ?laments of the opposite strip.v 4, a loom shuttle having a threading block mounted in one end thereof and provided with a longitudinal thread channel through which ' ?lling yarn passes from the bobbin to the out fur being disposed at a downward inclination let, and a strip of fur mounted at the entrance end of the threading block on at least one side thereof, the hair ?lament of said fur being dis and respectively contacting the hair ?laments of posed at a downward inclination. . thev opposite strip), - ' JOHN J. KAUFMANN, JR.