US1929921A - Apparatus for removing alpha covering from alpha core - Google Patents

Description

Oct. 10, 1933. H GAYLQRD APPARATUS FoR REMOVING A COVERING FROM A GORE Filed Dec. l0, 1950 2 Sheets-Sheet l OC. 10, 1933. H. F. GAYLORD 3,929,921

APPARATUS FOR`REMOVING A COVERING FROM A CORE Filed Deo. l0, 1950 2 Sheets-Sheet 2 Patented Oct. 10, 1933 UNITED STATES APPARATUS FOR REMOVING A COVERING FROM A CORE Harlow F. Gaylord, La Grange, Ill., assignor to Western Electric Company, Incorporated, New York, N. Y., a corporation'of New York Application December 10, 1930 Serial No. 501,315

5 Claims.

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

An object of this invention is to provide a simple, ecient, and ypractical apparatusV for removing a sheath from lead covered cable without preliminarily slitting the sheath.

In one embodiment of the invention a pair of pressing rollers are provided for flattening a lead covered cable, for example, a telephone cable, guided therebetween, and simultaneously advancing the flattened cable between guides to oppositely disposed rotatable cutters. Positioned immediately adjacent the points of slitting are deflecting members spaced suniciently to allow the passage of the cable therebetween and having their deflecting surfaces of such curvature to deflect the slit portions of the sheath away from the core and between advancing rollers which aid in advancing the cable and continue the advancement thereof after Athe cable has passed from between the'pressing rollers. Guides positioned in advance of the press- -ing rollers, the pressing rollers, the guides between the pressing rollers and the cutters, the cutters, the deflecting members and the advancing rollers are all adjustable to accommodate cables of various sizes.- Y

-The invention will be more fully understood from the following descriptions, taken Yin connection with the appended drawings in which,

Fig. 1 is a side elevational view ofthe apparatus, portions thereof being broken away;

Fig. 2 is atop plan View of the apparatus;

Fig. 3 is a vertical sectional view taken along 3 3 of Fig. 1;

Fig. 4 is a vertical sectional View taken along.

the line 4 4 of Fig. 1;

Fig. 5 is a schematic illustration of the operative connections of the various shafts with the power means;

'Fig 6 is a fragmentary perspective View of a portion of the apparatus, and Y Fig. 7 is a horizontal sectional view taken just above the slitting knives and the derlecting members. v

vReferring now to the drawings wherein like reference numerals designate similar parts throughout the various views, a supporting base 10 has mounted thereupon vertically extending supporting frames 11 and 12 disposed in a parallel spaced relation and having connecting plates or members 13 and 14 extending across thev upper edges thereof andl rigidly "secured thereto. Adjacent the entrance end of the passageway between the vertically extending frame members 11 and 12 are resilient guides 15and 16 held by bolts to the frames 11 yand 12, re. spectively, at their outer ends, theirinn'erv ends being disposed adjacent adjusting screws1'7 and 18 by the aid of which the positions ofj the guides 15 and 16, relative to each otherv,.rriay be varied. e

Positioned between the frames 11 and 12 near the inner ends of the guides 15 and 16 are pressing rollers 21`and 22'mounted upon shafts23 and 24, respectively, and arranged to be rotated 'in opposite directions to flatten and simultane-'f ously advance the cable guided therebetween-by the guides V15 and 16. The shaft 23 is journaled in the frames 11 and 12 and' has its ends extending outwardly therefrom for receiving` sprockets 25 and 26 (Fig. 5) which are keyed in the end thereof adjacentthe vframe 11 and for receiving a sprocket 27 which iskeyed to the end thereof adjacent the frame 12. A chain 28 passing over the sprocket 2,7,operatively connects the shaft 23 witha sprocket 29 of a power;l means (not shown). The shaft 24 is journal'ed in adjustablel bearing blocks 32 movablydisf, posed in guides in the frames 11 and 12, the ends ofthe shaft 24 extending outwardly frein the bearing blocks. The bearing blocks 32 Yaref supported by adjusting screws 33 Aextending through threaded apertures in the connecting plateA 13 for varying the relative positions ofthe rollers 21 and 22. Mounted upon the outer .end of the shaft 24 adjacent a frame 1l are sprock-r` ets 34 and 35, the sprocket 34 having a chain 36 thereupon which passes around `afsprocket 37A mounted upon a shaft 33. The shaft 33 Yand a shaft 39 extendvin parallel relationthrough the frame members 11 and 12, upon each side of-A the guides 15 and 16, and areoperatvely cori-vv nected to each other by interengaging gears 40 and 41 mounted upon the ends of the shafts 33 and 39 respectively adjacent the frame 12.

Power is transmitted from .the shaft` 23` through the sprocket 25, a chain 42, a sprocket 43 on the shaft Y39, from the Yshaft 39 vthrough the gears 41 and 40 to the shaft 38, and from theshaft 38 through thesprocket 37, thechain 36 and the sprocket34 to the shaft 24, thus rotating theroller 22 in' a counterclockwise direction and at the same speed in which the roller 21 is rotated in a clockwise direction. Positioned in frontl of the roller 21is "a stationary guide 50 serving asia platform-to guide the cable when advanced. Above the stationary guide and disposed in parallel relation therewith is an adjustable guide 5l carried by a bracket 52 which is fixed to the guide blocks 32 so as to effect a simultaneous adjustment of the guide 51 when the roller 22 is adjusted in position relative to the roller 21. At the sides of the guides 50 and 51 are tapered guide blocks 53 and 54, movably disposed in the frames 11 and 12 and connected together by an adjusting screw 55 provided with right-hand and left-hand threads receivable in similarly threaded apertures in the guide blocks (Figs. l, 2 and 4).

In advance of the guides 56 and 51 are rotatable slitting knives 56 (Figs. l, 2 and 3), which are equal in diameter and rotatably carried by adjustable supports 57, connected together by an adjustable screw 58 provided with right-hand and left-hand threads and positioned in similarly threaded apertures in the supports 57 so as to move the supports toward or away from each other during the rotation of Vthe adjusting screw. The adjustable supports 57 have outwardly extending projections 59 which are receivable in cutaway portions inthe framesll j'and 12 to allow the adjustable supports to be moved toward or 'away from each other, yet holding the slitting knives 56 in any desired position.

Adjustable defleoting members 62, having outwardly flared surfaces 63 and 64, are movably disposed in cutaway portions 65 of the frames 11 and 12 and are arranged to be moved relative to each other by adjusting screws 66, carried by the frames 11 and 12 and having their inner threaded ends receivable in threaded apertures of the deecting members. The narrow inner portions of the deecting members 62 havey partially conforming to the slitting knives 56 and terminating immediately adjacent the slitting positions to immediately move the slit portions of the sheath away from the core.

At the foreward ends of the deflecting surfaces 63 and 64 are positioned advancing rollers 70, 71, 72 and 73, the advancing rollers 70.and 71 being positioned to receive the upper portion of the sheath, while the rollers 72 and 73 are positioned to receive the lower portion of the sheath. The advancing rollers 70, 71, 72 and 73 are mounted upon shafts 74, 75, 76 and 77, respectively, the ends of the shafts 75 and 77 being journaled in the frames 11 and` 12, while the ends of the shafts 74 and 76 are journaled in bearing blocks 78 and 79, respectively. The position of the roller 70 relative to the roller 71 may be varied by movement of adjusting screws 83, which extend through threaded apertures in the connecting plate 14, and the relativepositions of the rollers 72 and 73 may be varied by4 movement of adjusting screws 84. The operative connection of the shafts 74, 75, 76 and 77 with the power means is illustrated in Fig. 5 wherein there is shown a chain 87 extending around the sprocket 26 of the shaft 23 and around a sprocket 88 of the shaft 77 and a chain 89 extending around a sprocket 90 of the shaft 77 and around a sprocket 91r of the shaft 75. A chain 92 extending around the sprocket 35 of the shaft 24 and a sprocket 93 of the shaft 74 to Vrotate in a counterclockwise direction and due to a sprocket, and chain connection 94 the shaft 76 is operatively connected to the shaft 74 and is rotated in the same direction. Y

L9aa921 From the foregoing description of the varid ous parts of the apparatus the operation thereof may be more clearly understood. When the apparatus is in operation, the pressing roller 2l rotating in a clockwise direction and the pressing roller 22 rotating in a counterclockwise diection a cable' is fed between the shafts 38 and 39 and moved forwardly between the guides 15 and 16 'and into engagement with the pressing rollers. The pressing rollers 21 and 22 will immediately grip the cable, compress it and simultaneously advance the cable in the fiattened condition between the guides 50 and 51. The movement of the cable is continuous and at a' predetermined speed so that when it passes from between the guides 50, 51, 53 and 54, it `will pass between the slitting knives 56. Due to the flattened condition of the cable the sheath may be slit upon opposite sides by the knives 56, thus separating the sheath into two Substantially flat strips which will immediately engage the deected surfaces 63 and 64 of the deflecting members 62 and be guided so that the upper strip will be moved into engagement with the advancing rollers 70 and 7l and the lower strip will be guided between the advancing rollers 72 and 73. The deecting members 62 are spaced sufficiently to allow the core of the cable vto pass therebetween to. the exterior of the apparatus where it may be received by any suitable means (not shown). The strip portions of the sheath, when engaged by the advancing rollers 70, 71, 72 and 73, will be drawn out rof the apparatus and the advancing rollers will continue to rdraw the cable between the knives v56 after the cable has passed completely from between the pressing rollers 21 and 22.

With this apparatus, a cable may be fed between the pressing rollers andv advanced continuously past the slitting knives and through the apparatus without preliminarily threading the cable in the apparatus and without rst slitting the sheath. The shafts 38 and 39, positioned one above and one below the guides 15 and 16, rotate inthe proper directions to aid in advancing the cable to the pressing rollers 21 and 22. To condition the apparatus for receiving a different size cable-the guides l5 and 16 are moved by the adjusting screws 17 and 18 to accommodate the cable. The pressing roller 22 is also moved relative to the roller 21 by rotation of the adjusting screws 33 and at the same time movement is Vvimparted to the adjustable` guide 51 to properly position it relative to the guide 50. The guide blocks 53 and 54 are moved laterallyto accommodate the different sized cable. Accurate guiding of the cable through the apparatus is essential and for this reason the guides 56 and 51 and the guides 53 and 54 are positioned as closely together as possible, thus servingv as means for retaining the compressed condition of the cable. The advancing Yrollers 70 and 72 may be moved relative to the rollers 71 and 73, respectively, to accommodate a sheath of different thickness. l

While the invention hasbeen described with reference to a specific embodiment thereof, it is understood that various modifications may be made therein without departing from the spirit and scope of the present invention.-

What is lclaimed is:

1. In an Aapparatus for removing a sheath froma cable, a pair of pressing rolls, means for guiding a sheathed cable between said pressing rolls, means for adjusting one of said pressing rolls relative to the other whereby the rolls may flatten the cable guided therebetween, ymeans for retaining the flattened condition of the cable, and means associating said retaining means with said adjustable means for eiecting a simultaneous adjustment or said retaining means and said adjustable pressing roll.

2. In an apparatus for removing a sheath from a core, a pair of rolls for compressing the sheathed core and advancing the sheathed core to a slitting means, fixed surface means for receiving the compressed sheathed core from between said pressing rolls and for maintaining the compressed condition of the sheathed core while being advanced to a slitting means, and means for slitting the sheath.

3. In an apparatus for removing a sheath from a core, a pair of rolls for compressing the sheathV and advancing the sheathed core, stationary means for receiving the compressed sheathed core from between said pressing rolls and for maintaining the compressed condition of the sheathed core while being advanced to a slitting means, means for slitting the sheath, a deecting member for defiecting the slit portions of the sheath in transverse directions, and advancing rolls disposed adjacent the termination of said deecting member for receiving yand advancing the portions of the sheath.

4. In an apparatus for removing a sheath from a-core, a pair of rolls for compressing and advancing the sheathed core, one of said rolls being movable relative to the other, means for slitting the sheath while advanced, guide members extending between said rolls and said slitting means for retaining the compressed condition of the sheathed core while being advanced, one of said guide members being movable with said movableroll, and'means for moving said movable roll and said movable guide for varying the positions thereof relative to their respective members.

5. In an apparatus for removing a sheath from a core, a pair of rolls for compressing the sheathed core and advancing the sheathed core to a slitting means, iiat retaining elements extending in parallel relationship and tangentially to the peripheries of said compressing rolls and spaced from each other a sunicient distance to retain the compressed condition of the sheathed core while being advanced to a slitting means, and means disposed adjacent said retaining elements for slitting the sheath.

HARLOW F. GAYLORD.v

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