US1929915A

US1929915A - Method of and apparatus for removing alpha covering from alpha core

Info

Publication number: US1929915A
Authority: US
Inventors: Jr Louis S Deitz; Jr Rudolph Schmidt
Original assignee: Western Electric Co Inc
Current assignee: AT&T Corp
Priority date: 1930-12-10
Filing date: 1930-12-10
Publication date: 1933-10-10
Anticipated expiration: 1950-10-10

Description

-METHOD OF AND APPARATUS FOR REMOVING A COVERING FROM A CORE Oct. 10 1 33 L. 's. DEITZ, JR, ET AL Filed Dec. 10, 1930 fire/71W; 1.5: 56/ 72 Patented Oct. 10, 1933 PATENT orFicE METHOD OF AND APPARATUS FOR REMOV ING A COVERING FROM A CORE Louis S. Deitz, Jr., Hinsdale, and Rudolph Schmidt, Jr., Chicago,

Ill., assignors to Western Electric Company, Incorporated, New York, N. Y., a corporation of New York Application December 10, 1930 Serial No. 501,307

' 17 Claims.

This invention relates to a method of and apparatus for removing a covering from a core, and more particularly to a method of and apparatus for removing sheath from lead covered cable.

Objects of this invention are to provide a simple, efiicient, and practical method of and apparatus for removing sheath from its core.

According to the objects of the present invention, the method of removing the sheath from a lead covered cable; for example, a telephone cable, consists in compressing the cable, slitting the sheath on only one side and at the point of greatest pressure, gradually deflecting the slit edges of the sheath to spread the sheath into a substantially fiat strip and separate it from the core, and directing the sheath and core in opposite directions.

The apparatus for practicing the method includes a pair of power driven rolls, which serve to compress the cable and advance it into engagement with a stationary knife carried by a support having a V-shaped spreading member for gradually deflecting the slit edges of the sheath outwardly free of the core. The cutting edge of the knife lies at a point in the plane of the axes of the rolls, while the side walls of the knife merge into diverging walls forming the spreading member. A projecting member oooperates with the spreading member for guiding the core and sheath in opposite directions.

The invention will be more fully understood from the following description, taken in conjunction with the accompanying drawing, wherein Fig. 1 is a front elevational view of the apparatus;

Fig. 2 is a sectional view taken substantially along the line 22 of Fig. 1;

Fig. 3 is a sectional view taken substantially along the line 3--3 of Fig. 2;

Fig. 4 is a sectional View taken along the line 4-4 of Fig. 3;

Fig. 5 is a sectional view taken along the line 5-5 of Fig. 2, with parts removed to illustrate the spreading of the sheath from the slitting position, and

Fig. 6 is a sectional view taken along the line 66 of Fig. 4.

Referring now to the drawing wherein like reference numerals designate similar parts, a frame or housing 10 has spaced parallel shafts 11 and '12 journaled in the side walls thereof, and operatively connected to each other by

gears

13 and 14, mounted upon adjacent ends of the shafts and in mesh so as to cause rotation of the shafts in opposite directions and at the same speed when power is applied thereto. A power means (not shown) is operatively connected to the shaft 11 through a sprocket and chain connection 15.

Disposed within the housing 10 and mounted upon the shafts 11 and 12 are

rollers

18 and 19 which are equal in diameter and have their peripheries spaced a suitable distance apart depending upon thesize of the cable which is to be advanced'therebetween. The suitable spacing of the

rollers

18 and 19 to allow for the slitting of different sized cable may be effected by any suitable adjusting, means (not shown).

Extending between the

rollers

18 and 19 adjacent the'line of travel of a cable 20 is a supporting member 21 having positioned at the transverse center thereof a knife or slitting member 22, the edge of which begins at a point in the plane of the axes of the rollers '18 and 19 and extends forwardly. The supporting member 21 has a transversely extending integral flange 23 through which screws 24, or the like, extend for rigidly securing the supporting member to the housing 10. The walls of the knife merge into diverging walls: 26 and 2'7 which form a V- shaped spreading member 28. At the outer end of the spreading member 28 are arcuate shaped diverting guides 29, the inner ends of which are rigidly mounted upon projecting fingers 30 of the support 21 and spaced sufliciently to allow core 31 of the cable 20 to pass th'erebetween as it is guided through a tapering grooved channel 32 formed between thediverging walls 26 and 2'7 and increasing in depth as it increases in width (Figs. 3, 4 and 6).

Positioned at the oppositeends of the

rollers

18 and 19 and rigidly secured to the housing 10, is a projecting member 35 having an inwardly extending directing surface 36 which begins at a point in close proximity'to the plane of the axes of the rollers, curves inwardly to a point a short distance from the outer end of the support 21, and then curves outwardly.

,the rollers sufficient to compress the cable.

During the operation of the apparatus, the

rollers

18 and 19 are rotated in opposite directions. The operator may then direct one end of the cable 20 into engagement with the rollers, which will immediately grip the cable and advance it forwardly in the direction of the arrow. The cable in passing between the

rollers

18 and 19 will be compressed sufficiently to hold the sheath against depression when moved into engagement with the knife 22, and at the point of greatest pressure the sheath is slit at one side by the knife as the cable is advanced. The diverging walls of the knife 22 guide the :slit edges of the sheath 40 into engagement with the spreading member 28 which bringsthexsheath into the shape shown in Fig. 5. The projecting member 35 serves a double purpose inthat it cooperates with the spreading member .28 indeflecting the slit edges of the sheath by gradually forcing the sheath outwardly into a substantially flat strip as the edges thereof are moved apart, and while flattening the sheath 40 the projecting member directs the core 31 in a direction opposite that in which the sheath is forced cduetothe diverting guides 29. As the core 31 is freed-from the sheath .40 it is forced 'and guided between the fingers 30 by the projecting member 35 and as 'no means is provided for changing the direction of travel thereof, such as thediverting guides 29 which are provided for the sheath 40, the core continues its movement in one directionwhile the sheath is moved in the opposite direction.

Withthis apparatus, the cable 20 maybe fed to the

rollers

18 and 19 withoutflrst adjusting the vrollsand during the operation of the apparatus the cable is subjected to a pressure by At the point of greatest pressure and at the point where it is most assured that the sheath .40 is .heldagainstdepression, the sheath is slit and .the slit. edgesthereof are immediately deflected outwardly toform thesheath into a substantially flat strip anddivertit in one direction while. the

core 31is diverted in the opposite direction.

.While theinvention has been described with reference to .a specific embodiment thereof, it .is understood that various modifications may be made therein.withoutdeparting from the spirit and. scope of v the present invention.

Whatis claimed is: v1. A'method of removing sheath from a core,

which comprises compressing the coveredcore sufficient to distort the covered core by subject- .ing.it to a-predetermined pressure, and slitting thesheathat the point of greatest pressure.

.,,2..A.method..of removing sheath from. a core,

which comprises compressing the coveredzcore sufficient to distort the covered core by subject- .ingitto a predetermined pressure, slitting the compresedsheathat the point of greatest pres- .sure, and deflecting the slit edges of the sheath.

.3. Amethod. of. removing sheath from a cable,

whichcomprises subjecting the sheathed cable .to .a pressuresuificient to Iflattenthe cable, and

slitting the sheath at the ,point .of greatest pressure.

4...In .an apparatusfor removing sheath from acore means for compressing the sheathed core suflicient to distort .thesheathed core by subjecting it tovapredeterminedtransverse pressure, and meansfor slittinglthe compressed sheath at rfrom the core, means for directing the core in one direction, and means for directing the sheath in the opposite direction.

"7. In'anapparatus for removing sheath from a core, means for advancing the sheathed core,

and a-V.-shapedmember having a slitting edge at the'point of the V for slitting the sheath longitudinally, the transversely extending por .tions of the V-shaped member arranged to spread the slit sheath.

8. In an apparatus for removing sheath from a-core, means for advancing a sheathed core, and a V-shaped member for slitting the sheath longitudinally and spreading the sheath while advanced.

'9. In an apparatus for removing 'shea'thfrom a core, means for advancing the sheathed core, and a V-shaped member for slitting the sheath longitudinally and for spreading the sheath into a substantial-flat strip while advanced.

10. A method ofremoving sheath from a core which consists in subjecting the sheathed core to a pressure for substantiallyflattening it,-and slitting the sheath at one side of the flattened portion during the flattening thereof.

11. In-an apparatus for removing sheath from a core, means for slitting the sheath upon one side, and means for deflecting the two slit edges of the sheath to separate the sheath fromthe core.

12. In an apparatus for removing sheath'from a core, means for slitting the sheath upon one side, means for deflecting the slitedges of the ward said deflecting means for substantially flattening the sheath.

14. In an apparatus for removing sheath from acore, means for slitting the sheath upon one side, means for deflecting the slit edges ofthe sheath, means for directing the sheath toward said deflecting means for substantially flattening the sheath, said directing means also directing the core in one direction, and-meansfor directing the substantially flattened sheath in the opposite direction.

15. In an apparatus for removing sheath from a'ccre, means for slitting the sheath upon one side, transversely extending members for deflecting the slit edges of the sheath, and a member having an inclined surface engaging *the sheath at the opposite side for substantially flattening the sheath and directing the core away from the sheath.

.16. In an. apparatus for removing sheathfrorn a core, means for slitting the sheath upon one ..side,.transversely extending members for deflecting the slit edges of the sheath, a member'having an inclined surface engaging the sheath at the opposite side and'extending in one direction for substantially flattening the sheath and directing the core in one direction, and deflecting members for directing the flattened sheath in another direction, said deflecting members being spaced so that the core may pass therebetween.

LOUIS S. DEITZ, JR.

RUDOLPH SCHMIDT, JR.