in a rclatively few large pieces, thus reducing the assem- bly or application time to a minimum。 In this manner, the Le Bus counterbalanced spooling grooves may be quickly and i=cexpensively provided on substantially any drum core。
It is an impcrrtant object of this invention to f GVide a novel method of providing counterbalanced spending grooves on a drum core。
It is another object of this invention to provide a meihoct of: providing counterbalanced spooling grooves on a drum core throup•h the utilization of conventional machining processes。
3,1 10,080
Another object of this invention is to provide a method ct grooving a drum core with a continuous circumfer- ential groove havin;; combined helical and parallel por- tions in a manner requiring a minimum of exp•<nse。
5ti11 another object of this invention is to provide a method of grooving a drum core with a continuous cir- cumferential gi oove having combined helical and parallel portions in a manner wh»•rein II:e same method may be utilized for providing a variety of the helical and par- allel patter:is on the drum。
Still 。another obJect of this invention is to provide a novel method of providing a counterbalanced grooving on the periphery of the spooling drum and which is simple and efficient in operation。
Other and further objects and advantageous features of the prcs-•nt invention will hereinafter more fully appear in connection with a detailed description of the di awings in v/hich:
FIGURE 1 is a perspective view of a parallel grooved sleeve embodying the invention。
FIGURE 2 is an exploded perspective view of a grocv»•d sleeve as shown in FiGURE 1, and depicting one modi- fication thereof for providing a counterbalanced grocv- mp on a drum core。
FIGURE 3 is a view similar to FIGURE 2 depicting the segm•。nts of the grooved sle•ve as re-arranged for attachment to a drum core。
FIGURE 4 is an evolved plan view ct a cylindrical sleeve emt›odying that in'/ention。
FIGURE 5 is an evolved plan vi<•w of a cable spooling drum having a coimterbal:inced grocvin;; thereon as assembled from the embodiment depicted in FIG'dT'。fl 4。 FIGURE 6 is a sectional view ta1:en on line It—6 of
FIGURE 5。
FIGURE 7 is a sectional vi。•w tai:en on 11ne 7—7 of FIGURE 5。
FIGUPsE 8 is a view similar to FIGURE 4 depicting a modified arrangement fcr thc grooved s1ee•ze。
rIGURE 9 is a view similar to FIGURE 5 depicting a spooling drum as assembled from tire s1c»•ve depicted in FIGURE s。
FIGURE 10 is a sectional view ta1‹en on line 18—18
of FIGURE 9。
FIGURE 11 is a sectionsl view tai:en on line 11—11
of FIGURE 9。
FIGURE 12 is a view s:iini1ar to FIGURE 4 depicting st111 another modified arrangement for “tne grooved sle•-ve。
FiGURH 13 is a view siriiilar to FIGURE 5 depicting a spoo1ir。g drum as assembled from the s1e••ve depicted in FIGURE 11。
FIGURE 14 is a sectional view tai:en on line 14—14 of FIGURE 13。
FIGURE 15 is a sectional view taken en line 15—is o:I
FIGURE 13。