FIGURE 16 is a view similar to FIGURE 4 depiotiig another modified arrangement for the groove slee-ze。
FIGURE 17 is a view similar to FIGURE 5 depicting a spooling drum as assembled from tire sleeve depicted in FIGURE 16。
FIGURE 18 is a sectional view taken on line 18—18
of FIGURE 17。
FIGURE i9 is a sectional view taken on line 19—i9 of FIGURE 17。
Referring to the drawings in detail, reference character 18 generally indicates a substantially cylindrical sleeve preferably of any suitable diameter corresponding to the diameter of a drum core (not shown) to be provid•。d with a couiiterbalanc•»d peripheral grooving。 The outer pe- ripher( of the sleeve lfl is provident with a plurality of circumfer•ntially parallel grooves 13 extending through-
becomes a “ma。ster cylinder” which may be utilized for provid'mg a variety of counterbalanced grooving systems on the core o:I a drum in a manner as will be hereinafter set forth。
6 Conventional Rise IS roo›•ing 5ystcm
One type of' counterbalanced grooving is common- ly known as the conventional rise system, and is partic- ularly disclosed in FIGURES 1 throup•h 7。 This type of drum core grooving comprises a continuous combined
10 helical and parallel groove on the outer periphery of the
core, and th• length of the core is such With respect to the fiiametric size of the grooves that a full number of grooves, plus one-half groove are necessary to fill the en- tire longitudinal length thereof。 For example, as shown in FIGURES 5 and 6, the length ct: the core beiwee'n the W•i i flanges 14 and 16 is indicated as A。 The grooving,
¿generally indicated at 18, extends across the drum be- tween the i1an;;es, but a half groove spacing, shown at 20, remains between the grooving and the drum flange 16。
20 Of course, in per。tions of the circumferential grooving the
ha1f- OOve spacing 20 will be adjacent the flange 16, whereas in other portions of 'the circumferential groov- ing the half-groove spacing 2(I will be adjacent the drum flange 14, as •U1 be hereinaftei- s••t forth。 Arcuate end inter bars 12 and 24 of any well known type are disposed in the half-grooves for facilitating the cable spooling op- eration, as is well i:no-an。
The con•/entiona1 rise grooving system ›comprises a parallel pu-ooved section B extending around substantial-
30 ly nalf the circumference or the drum core and in com-
munication with a sccond similar para11e1 section C tiiro'agh a pair of spaced helical portions D and E。 The groOY)ng 18 of the parallel section B extends from the flange 14 aci•osS the drum core to the end filler bar 22, Which is adjacent the flange ›16。 The groovinq• ,18 of the para11e1 section C extends from the 8ange 16 across the drum core to the end filler bar 24, which is adjacent the fiange 14。 Oi course, the helical section D, comeurinat- ing between the parallel sections B and C, is of: necessity provided with one less groox•e than the parallel sections iii order to provide the cross-over action of tn’e cable (not show) duri:ig the winding operation。 However, the helical or cross-over section E contains an equal min- ber of grooves as th•。parallel sections B and C。 Thus, as 开槽电缆线筒体的方法英文文献和中文翻译(4):http://www.youerw.com/fanyi/lunwen_100039.html