Патент USA US2409673код для вставки
Oct. 22, 1946. W. C. EWALDSON STRAND F ORMING AP Filed March 15 2,409,670 _ PARATUS 2 Sheets-Sheet l 1 , 1945 INVENTOR mg. EWALDSON 8)’ J52? TTO RNEY Oct. 22, 1946. w_‘¢_ EWALDSQN ' _ 2,409,670 , STRAND FORMING APPARATUS Fi]_.ed March 15, 19,45 2 Sheets-Sheet 2 TTORNEY Patented Oct. 22,1946 ‘2,409,670 "‘ UNITED . STATES “ PATENT OFFICE‘ i ' Waldemar C. Ewaldson, Millington, .N.‘J., assignor to Western Electric Company, Incorporated, New‘York; N. Y., a corporation ‘of New York Application March 15, 1945','seria1 No. 582,970 .9, ‘Claims. (01. 28-1) . 1 ' ‘ ~ paratus, and more particularly toapparatus for forming switchb‘oar'dcables. ‘ i r 2 the ends of the ‘latter ‘being supported in parallel members 22 of a lever 23. The shaft 2| is ?xed invention relates to strand forming ap in position by a set screw 24. ‘The lever 23 is _' pivotally mounted upon a shaft 26‘, the outer ends of which are mounted in apertures in the sides II I. An ‘upwardly projecting arm ‘21 of the lever .23 supports a cam block 28 which is positioned to i In the manufactureof switchboard equipment, it has been found advantageous to provide the cables, with their groups of electrical conductors which are to complete the necessary electrical connections with the various electrical units, to ride upon the periphery of a cam 39. The cam 36 is mounted upon a shaft 3| and has a peripheral be ‘substantially ?at and with given dimensions so that they may be ‘easily positioned in the 10 contour as illustrated in Fig. l: with the peripheral surface thereof ‘beginning at a low portion 32, ‘and having a’cons'talnt rise to its highest portion 33. “The s‘haft‘3l is j-ournalled in suitable bear switchboard structures consuming a minimum of space therein. ' ‘ 7 An object of the invention is ‘to provide a strand ings 34 in the sides II, and has a dial 35 ?xedly forming apparatus which is simple in structure andhighly efficient in compressing strands into 15 mounted upon the ‘forward end thereof. vThe dial ‘35 ‘is divided adjacent its periphery by gradua predetermined cross sectional contours of given thicknesses. - f I v. ‘ tions “3'6 which are to indicate one hundredths of ‘an‘in‘ch‘the ‘thickness to which the strand or ma ' With this and ‘other ob'jectsin View, the inven terial is to be reduced while passing between the rollers M and 2!)‘. The graduations 36 are there ‘fore spaced proportionately to the varying con tour of the cam 30 so that, by positioning a given graduation adjacent a pointer.38,..it will be known tion comprises a strand forming apparatus par ticularly adapted for ‘forming cables and‘includ ing‘ a rotatable roller with a- fixed axis, cooperat ing with a companion roller, the latter being mounted on a‘ movable axis, parallel to the ?xed "that a given portion of the ‘cam ‘surface 39*wi11 to compress a strand into a given cross sectional Ni t1 be ‘adjacent’ the cam block 28 to locate the roller "axis and under ‘a predetermined variable pressure 21] a ‘selected measured distance from the roller .14. The dial 315 is provided with a handle 35, by the :aid of which it may be ‘manually rotated in either direction relative to the pointer 38. ‘The pointer 38 is mounted upon a housing 40 which is a part of the cover I2. The housing 40 includes aplunger 4| positioned to engage the back of the dial 35 and apply a predetermined braking‘ or holding force to the dial through the aid of a contour during‘the advancement of the strand. Other objects and ‘advantages will be apparent from the ‘following detailed description when con sidered in conjunction with the accompanying drawings, wherein ‘ ’ "Fig. 1‘ is a ‘front elevational view of one species of theinventionj Fig. 2 - ‘ - a 'front elevational view of the ‘struc ture shown in Fig. 1, portions thereof being broken 10 L! ‘away while others are shown‘ in section; _ Fig. 3 is an "enlarged fragmentary front ele vational view of the dial and pointer of the struc ture‘shown in Fig. 1; ‘ i " Fig. 5 is a fragmentary sectionalview taken along the 1ines'5—5 of Fig. 4. ‘r force may be‘ varied through the actuation of an adjusting screw £3 threadedly disposed in a‘ nut ‘ ‘ Fig. 4 is a fragmentary sectional view of an other species of the invention; and ‘ ' ¢ ‘ “ Referring now to the drawings, attention is ?rst directed to Figs. 1 to 3 inclusive. The species of the invention shown in these ?gures includes a ' spring 42. ‘The spring 42 isdisposed in the hous ingand in "the hollow end of the plunger M. Its PM which closes the end of the housing 40. 40 Pressure ‘means is ‘provided to normally hold the rollerJZil the selected measured distance from the roller‘ 1'4. This means includes a spring 46 which. “rests upon a member 41, the latter being disposed upon the free end of the lever 23 and connected thereto ‘as indicated‘at 48. An adjustable screw frame composed of a base HI and‘vertical sides‘ I I mounted thereon; the upper ends of‘the sides being ‘closed by a cover l2.' A roller M, having end ‘members l5 integral therewith, is mounted‘upon a ‘shaft IS, the ends ‘of which ‘are supported by 43 threadedl'y disposed in an aperture 50 of the cover I2 is provided ‘to vary the force in the spring bearings H, the latter being supported asillus of thé‘invention, the strand or material to be vformed is what is known as switchboardrcable ‘trated in Fig. 2 in apertures in the sides H; A companion roller 20, positioned to interengage ‘the roller M ‘by extending between the end mem ‘bers ‘I35, is ‘rdtatably ‘mounted‘upon ‘a shaft ‘2|, ‘toi‘be applied to the lever 23 and, through it, to the roller 20. V i ' ‘Considering now the operation. of this ‘species ‘having a‘ contour, ‘after the assembling of the in isulated electrical conductors in a sheath of se lected materialswhich is round or oval in cross 2,409,670 3 4 section. More speci?cally the switchboard cable convolutions of the conductors in close proximity may be either one of two forms; one, the nor to the pressboard core and cause them to be set mally round form and the other, normally oval in this position without damaging the insulating form. The round form includes a group of insu coverings on the conductors or the layers of lated electrical conductors, their insulations being 5 material surrounding the conductors. If a different type of strand or cable is to be of a chosen group of color combinations, which after being brought together in a cable forming formed, the apparatus may be adjusted to vary machine, are tied or bound together by a spiral the desired distance between the rollers l4 and textile wrapping, after which a double spiral 20 by rotating the dial 35 through the aid of the wrapping of paper is applied. Over the paper, 10 handle 39 until the selected indications on the a spiral wrapping of metal foil is added and then dial have been moved into registration with the another double spiral wrapping of paper, after pointer 38. which a longitudinal wrapping of a corrugated relative to the braking or holding means, the cam 30 in moving relative to the cam block 32 causes tape is applied and ?nally abraided covering of textile material. The cable in this condition is then passed through a bath of paint or other During this movement of the dial movement of'the lever 23 about its pivot 26, and therefore varies the position of the roller 20 a measured distance indicated by the dial at the pointer from the roller M. The apparatus is now in condition for operation, which operation may suitable material and after the cable has been allowed to dry, it is advanced between the rollers l4 and 20. In the other form of cable, shown in the drawing, the chosen group of electrical con 20 be performed in the same manner as previously ductors with their insulated coverings of selected described through the advancement of the mate code colors are served spirally about a pressboard rial between the rollers. core which is a strip of ?exible material approxi The species of the invention shown in Figs. 4 mately 1%" wide. The wires are secured to the and 5 is identical with that shown in Figs. 1, 2, core by spiral textile serving, after which a de 25 and 3 with the exception of the handle 39 and sired number of spiral servings of paper tape are the braking means including the plunger 4|, the applied, over which the longitudinal forming of housing 42, and the other structure embodied the corrugated tape and the braided textile cov therein. In place of the housing 40, a plate 60 is ering are applied. This cable is also passed ?xed to the adjacent side H, by suitable means through the paint bath and after drying it is in 30 such as screws SI, and supports a pointer 62 posi readiness to pass between the rollers l4 and I5. tioned to register with indications 63 and 64 on a In either instance,- it is desirable that the cable dial B5. The dial 65 is mounted upon a shaft 66 be reduced in thickness so that its space back of the switchboard will be no greater than the thick which supports a cam (not shown) identical with the cam 30. Associated with the cam, is a struc ness of the jack strip to which its conductors are 35 ture identical with that shown in Figs. land 2. It will be understood therefore that variations in to be connected, These cables, therefore, serve the position of the dial G5 with respect to its to connect the terminals of the jack strips of one switchboard unit to the terminals of a similar pointer 62 will cause variations in the position of jack strip of another switchboard unit. As the a roller such as 20 with respect to a roller such strand or cable, indicated at 52, is advanced be 40 as l4, for reducing the thickness of a strand or tween the guide members 53, it will be reduced in material to a given thickness and therefore to a thickness, as illustrated in Fig. 2, to the chosen given width. dimension.’ It is natural to assume that a cable The dial 65 is apertured at 61 to receive a mem— of a given structure when reduced to a chosen ber 68, the latter having an eccentrically dis thickness will have a given width as the material 4 posed aperture 69 therein. A rod T0 is disposed of the cable will ?ow laterally between the rollers in the aperture and is keyed in place as at ‘H for to an overall width, depending ?rst upon the axial movement in the aperture and for connec quantity of material in the cable, and the dis tion with the member so that rotation of the rod tance of the rollers I4 and 20 from'each other. will cause rotation of the member in its aperture Therefore, as the material or cable is formed 50 61. A handle or gripping portion 12 is mounted as it advances between the ?xed roller l4 and upon the outer end of the rod 10 while the inner the roller 23, the latter, although variable in this end has a reduced portion 13 receivable in any selected one of a multiplicity of grooves 14 in the instance, remains at a ?xed position under nor plate 60. Through the aid of a spring 75, the mal conditions unless there should be an abnor mal quantity of material at a portion in the rod ‘:0 is normally urged to the right to force strand of cable. When such a condition exists, the end 13 into a selected one of the grooves 14. the roller .20.,may be moved with the lever 23 t is possible, however, to move the rod through about the axis of the shaft 26 and against the the aid of the handle 12 to remove the end 13 force present in the spring 46 until the abnormal, from any groove 14 in which it is disposed. The portion in the strand or cable has passed from grooves or recesses 14 are of like given widths between the rollers. When this condition occurs, substantially equal to the diameter of the end the apparatus will automatically reset itself, the 13 and disposed radially about the shaft -66 so that roller ZOreturning to the selected position with their longitudinal center lines Will lie in radial respect to the roller I4 so that the remainder of _ planes with the indications 63. the strand or cable will be reduced to the chosen When a pointer ‘H of a member 18, mounted dimension. There is no- detrimental disturbance upon the member 68, is at its zero (0) position to the cable during its advancement between the (Fig. 5), dial with its associated mechanism may rollers l4 and 20. During the initial forming of be moved to a selected indication 63 by pulling the cable, particularly the servingof the con outwardly upon the handle 12 and through the ductor wires spirally about the pressboard core, aid of the handle moving the dial to the predeter the resilient nature of the conductors will tend mined indication ‘63. By this adjustment, it will to cause them to project outwardly wherever pos be known that the rollers are a given distance sible to create an oval cross-sectional contour for apart, which distance is the number of one the cable. The pressure applied to the cable will hundredths of an inch as indicated by the dial at move these outwardly projecting portions of the 75 the :pointer._ To vobtain a ?ner adjustment, after 5 2,409,670 the selected main indication 63 has been posi tioned adjacent the pointer 62, the handle may be rotated to rotate the pointer 11 to register with any of the indications 80, that is, from the zero (0) to the nine (9) position to cause the member 68 to continue movement of the‘ dial an addi tional distance and through a ?ner adjustment 6 movable with the cam and relative to the pointer to indicate the distance between the rollers, and means cooperating with the dial to hold the cam at any selected position relative to the element. 5. A strand forming apparatus comprising a 5 main roller mounted for rotation upon a ?xed axis, a companion roller, an element to support which is divided into 1/1000 of an inch, to further the companion roller, means to support the ele vary the measured distance of the roller 20 from ment for movement of the companion roller rel the roller [4. Thus, with this species of the in 10 ative to the main roller,- a cam actuable to move vention, the same result may be accomplished as the element to move the companion roller to has been described in connection with the species positions measured distances from the main shown in Figs. 1 to 3 inclusive, but with a ?ner roller, whereby a strand advanced between the adjustment of the position of the roller 25} with rollers will be reduced to a thickness equaling respect to the roller [4. . 15 the distance between the rollers, and means to Although speci?c improvements of the inven normally hold the element in engagement with tion have been shown anddescribed, it will be the cam. understood that they are but illustrative and that 6. A strand forming apparatus comprising a various modi?cations may be made therein with main roller mounted for rotation upon a ?xed out departing from the scope and spirit of this 20 axis, a companion roller, an element to support invention as de?ned by the appended claims. the companion roller, means to support the ele What is claimed is: ment for movement of the companion roller rela l. A strand forming apparatus comprising a tive to the main roller, a cam actuable to move main roller mounted for rotation upon a ?xed the element to move the companion roller to posi axis, a companion roller, an element to support 25 tions measured distances from the main roller, the companion roller, means to support the ele whereby a strand advanced between the rollers ment for movement of the companion roller rela will be reduced to a thickness equaling the dis tive to the main roller, a cam actuable to move tances between the rollers, and variable resilient the element to move the companion roller to po means to normally urge the element into engage sitions measured distances from the main roller, 30 ment with the cam. ‘whereby a strand advanced‘between the rollers 7; A strand forming apparatus comprising a will be reduced to a thickness equaling the dis— main roller mounted for rotation upon a ?xed tance between the rollers, and resilient means to axis, a companion roller mounted upon an axis normally urge the element to engage the cam. movable relative to the said ?xed axis, a pointer, 2. A strand forming apparatus comprising a 35 a dial movable relative to the pointer to indicate main roller mounted for rotation upon a ?xed in given fractional dimensions the distance be axis, a companion roller, an element to support tween the rollers, means operable by the move the companion roller, means to support the ele ment of the dial to control the position of the ment for movement of the companion roller rela companion roller relative to the main roller, a tive to the main roller, a cam actuable to move handle to move the dial, and means under the the element to move the companion roller to po control of the handle to latch the dial in any of a sitions measured distances from the main roller, plurality of selected positions. whereby a strand advanced between the rollers 8. A strand forming apparatus comprising a will be reduced to a thickness equaling the dis main roller mounted for rotation upon a ?xed tance between the rollers, and resilient means to 45 axis, a companion roller mounted upon an axis normally urge the element to engage the cam movable relative to the said ?xed axis, a pointer, means to actuate the cam. a dial movable relative to the pointer to indicate 3. A strand forming apparatus comprising a in given fractional dimensions the distance be main roller mounted for rotation upon a ?xed tween the rollers, means operable by the move axis, a companion roller, an element to support 50 ment of the dial to control the position of the the companion roller, means to support the ele companion roller relative to the main roller, a ment for movement of the companion roller rela handle to move the dial, means under the control tive to the main roller, a cam actuable to move of the handle to latch the dial in any of a plu the element to move the companion roller to po rality of selected positions, and means operable _ sitions measured distances from the main roller, 55 by movement of the handle relative to the dial to whereby a strand advanced between the rollers , further vary the distance of the companion roller will be reduced to a_ thickness equaling the dis from the main roller for ?ner fractional dimen tance between the rollers, a ?xed pointer, and a sions. dial movable with the cam and relative to the ' 9. A strand forming apparatus comprising a pointer to indicate the distance between the 60 main roller mounted for rotation on a ?xed axis, rollers. ' a companion roller, a support therefor movable 4. A strand forming apparatus comprising a relative to the said ?xed axis, a Variable stop to main roller mounted for rotation upon a ?xed limit the movement of the support and the mov axis, a companion roller, an element to support able roller to predetermined variable positions the companion roller, means to support the ele» 65 relative to the main roller, and resilient means to ment for movement of the companion roller rel normally urge the support toward and into en ative to the main roller, a cam actuable to move gagement with the stop to force the companion the element to move the companion roller to posi roller into any selected one of the positions, tions measured distances from the main roller whereby a strand advanced between the rollers whereby a strand advanced between the rollers 70 will be reduced to a thickness equaling the dis will be reduced to a thickness equaling the dis tance between the rollers. tance between the rollers, a ?xed pointer, a dial WALDEMAR C. EWALDSON.