US1895462A - Braiding machine - Google Patents

Braiding machine Download PDF

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Publication number
US1895462A
US1895462A US417837A US41783730A US1895462A US 1895462 A US1895462 A US 1895462A US 417837 A US417837 A US 417837A US 41783730 A US41783730 A US 41783730A US 1895462 A US1895462 A US 1895462A
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Prior art keywords
strand
carriers
track
braiding machine
annular
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US417837A
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George E Henning
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AT&T Corp
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Western Electric Co Inc
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    • DTEXTILES; PAPER
    • D04BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
    • D04CBRAIDING OR MANUFACTURE OF LACE, INCLUDING BOBBIN-NET OR CARBONISED LACE; BRAIDING MACHINES; BRAID; LACE
    • D04C3/00Braiding or lacing machines
    • D04C3/40Braiding or lacing machines for making tubular braids by circulating strand supplies around braiding centre at equal distances
    • D04C3/44Braiding or lacing machines for making tubular braids by circulating strand supplies around braiding centre at equal distances with means for forming sheds by subsequently diverting various threads using the same guiding means
    • DTEXTILES; PAPER
    • D04BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
    • D04CBRAIDING OR MANUFACTURE OF LACE, INCLUDING BOBBIN-NET OR CARBONISED LACE; BRAIDING MACHINES; BRAID; LACE
    • D04C3/00Braiding or lacing machines
    • D04C3/48Auxiliary devices

Definitions

  • BRAIDING MACHINE Filed Jan. 1. 1950 5 Sheets-Sheet 4 Jan. 31, 1933., HENNlNG 1,895,462
  • BRAIDING MACHINE Filed Jan. 1, 1930 5 Sheets-Sheet 5 6 jww Patented Jan. 31, 1933 UNITED STATES PATENT. OFFICE GEORGE E. HENNING, OF BALTIMORE, MARYLAND, ASSIGNOR TO WESTERN ELECTRIC COMPAN Y, INCORPORATED, 013 NEW YORK, N. Y., A CORPORATION OF NEW YORK BRAIDING MACHINE Application filed. January 1, 1930. Serial No. 417,837.
  • This invention relates to braiding machines, and more particularly to braiding machines for applying an enclosing sheath to electrical conductors'
  • the principal object of the present invention is a braiding machine having a minimum number of parts arranged to cooperate to braid strands of material accurately and efficiently and at a high speed with a minimum amount of vibration.
  • a braiding machine having a central spindle around which two sets or series of cop carriers rotate with the cops of each set or series having their axes in spaced parallel longitudinal planes. Power is communicated to the lowermost of the cop carriers directly from a bevel gear connection, but in the case of the upper cop carriers which has its cops proper mounted on ball bearings, power is transmitted through disks having oppositely disposed grooves, which are secured to a shaft rotated from the central spindle, and which permit strands from the cops to pass in and around each other to effect the braiding operation.
  • Switching of the strands is accomplished by a set of alternately downwardly and upwardly directed stationary cast deflecting fingers which cooperate with a set of fingers rotating with the lower cop carriers and having a contour determined by the outermost point of the strands from the lower cops to maintain a substantially constant tension and thereby minimize breakage of the strands.
  • a distributor associated with a take-up spool which consists of a one-way threaded screw cooperating with a reversible pawl mechanism for driving the screw in opposite directions to distribute accurately and uniformly the braided material on the take-up spool.
  • the braiding machine is equippedwith a mechanism for drawing oil from a source of supply and elevating the oil to a point where it flows over the several moving parts, and also the 50 entire braiding machine is enclosed in a housing having a slidable door which allows easy and free access to all parts of the braider and which, when closed, materially reduces the noise and the possibility of injury to the operator.
  • Fig. l is a front elevational view of a braiding machine embodying the features of the invention
  • Fig. 2 is a fragmentary front elevational view of the machine, some parts being omitted for the sake of clarity;
  • Fig. 3 is a fragmentary vertical sectional .view taken on the line 33 of Fig. l in the direction of the arrows;
  • Fig. 4 is a fragmentary horizontal sectional view taken on the line 4-4 of Fig. 1 in the direction of the arrows;
  • Fig. 5 is a fragmentary vertical sectional view taken on the line 55 of Fig. 1 in the direction of the arrows;
  • Fig. 6 is a fragmentary sectional View taken on the line 66 of Fig. 5 in the direction of the arrows;
  • Fig. 7 is a fragmentary vertical sectional view on line 77 of Fig. 1 in the direction of the arrows;
  • Fig. 8 is a fragmentary horizontal sectional view taken on the line 8-8 of Fig. 7, and
  • Fig. 9 is a plan view, partially insection, showing the capstan drive.
  • the numeral 11 designates generally a braiding machine embodying the features of theinvention mounted on a table12 provided with suitable supporting standards 13. Beneath the table 12 there is provided a partition 14 for separating a supply reel-16 from a takeup reel 17. A strand of rubber covered wire 18 may be drawn from the reel 16 and advanced through the braiding machine 11 wherein it is covered with abraided sheath and thence to the take-up reel' 17.
  • the reel 17 is rotated by a motor (not shown)- which drives a belt 19 cooperating with a pulley 20.
  • the pulley 20 is mounted on a stud shaft 21 journaled on the end of a rocker arm 22 which has a spring 23 attached to the outer end thereof for normally urging the pulley downwardly to maintain tension between the belt and the pulley and to permit a slipping engagement therebetween to allow for changes in the diameter of the takeup spool as the material is wound thereon.
  • a small gear 27 Secured to the opposite end of the stud shaft 21 is a small gear 27 which meshes with and drives a large gear 28 which is secured to a shaft 29.
  • Formed on the large gear 28 is a pin which may be inserted in an aperture 30 in the head of the reel 17 when the shaft 29 is inserted in the reel 17.
  • the strand being covered is drawn through the braiding mechanism 11 by a capstan 32 mounted on a bracket 33 secured to the top of the table 12. Secured to they capstan 32 is a ring gear 37 which meshes with a pinion 38 carried on the end of a shaft 39 journaled into suitable bearings 40 and 41 formed on the bracket 33.
  • the shaft 39 carries a bevel gear 42 which meshes with and is driven by a pinion 43 mounted on the upper end of a vertically extending shaft 47 also journaled in a bearing 48 formed on the bracket 33.
  • Mounted on the end of the vertically extending shaft 47 is bevel gear 49 which meshes with a pinion 50 mounted on a shaft 51 journaled in a bearing member 52 secured to the underside of the table 12.
  • the shaft 51 also supports a pulley 53 for driving the belt 19, and a pulley 58 which is driven by the motor (not shown).
  • the braiding machine 11 comprises three principal parts, the stationary supporting portion which includes a pedestal 59 and a guard or hood 60, an outer rotatable turret 61, and an inner rotatable turret 62.
  • the stationary supporting portion which includes a pedestal 59 and a guard or hood 60
  • an outer rotatable turret 61 and an inner rotatable turret 62.
  • these parts will be described separately and in the order in which they are mentioned hereinbefore.
  • the ard or hood 60 surrounds the movable parts of the mechanism and is comprised of a sheet metal hood 63 provided with an opening on one side thereof as shown at 64 which may be closed by a slidable door 67.
  • the door 67 is provided with a handle 68 and is supported on rollers 69 which engage the table 12 and the lower edge of the wall of the hood as shown at 70 when .the door is in one position and engage the top of the table 12 and a channel member 71 which conforms to the general contour of the hood and to which the lower edge of the wall of the hood is secured.
  • a top segment 72 which is rotatably secured to an annular member 73 in turn secured to the top of the hood 63 at the center thereof.
  • the annular member 73 is threaded internally and a projecting portion of a bracket 77 having an opening 78 therein which corresponds to the openingin the annular member 73 is threaded externally and threadedly engages the annular member 73.
  • the bracket 77 is semi-circular in configuration and has threaded in its lower end a thread guide 79 which may be adjusted vertically and locked in any desired position by a lock nut 80.
  • Disposed in a circle about the underside of the hood 63 are four depending, arcuately shaped guide castings 81, the function of which will become apparent as the description progresses.
  • the table 12 has mounted thereon a three footed hollow pedestal 59 comprising an upwardly extending tubular portion 83 and feet 84 in one of which feet is journaled a driving shaft 87 to which are secured hearing races 88 which cooperate with hearing retainers 89 secured to the foot 84 of the pedestal 59.
  • the left end (Fig. 3) of the driving shaft 87 has keyed thereto a sprocket.
  • the drum 91 may be acted upon by any suitable braking mechanism (not shown) to stop the machine, and the sprocket gear 90 is driven by a chain 92 connectedin any suitable manner to the motor (not shown) which drives the take-up reel.
  • a pair of bevel gears 93 and 97 Secured to the right end of the driving shaft 87 are a pair of bevel gears 93 and 97 between which a depending portion 98 of the pedestal 59 acts as a supporting bearing for the driving shaft 87.
  • An oil guard 99 encloses each of the feet 84 of the hollow pedestal 59 to prevent a lubricating medium used to lubricate the moving parts of the machine from coming in contact with the material being worked upon and an annular oil reservoir 100 is secured to the underside of the table 12 and has formed internally thereof an annular guide member 101.
  • a bracket 102 Secured to the underside of the annular guide member 101 is a bracket 102 which supports a guide roller 103 adapted to direct a strand drawn from the supply reel through the center of the braiding mechanism 11.
  • the annular guide member also forms a part of the oil reservoir which has a perforated annular apron 104 therein which prevents the lubricant from being splashed out of the reservolr.
  • An annular cup shaped casting 107 is keyed at 108 to the upwardly extending portion 83 of the pedestal 59.
  • This casting has secured about its periphery four outwardly and upwardly extending guide castings 109 which cooperate and are arranged in series with the arcuately shaped guide castings 81.
  • the upwardly extending tubular portion 83 of the pedestal 59 carries externally thereof bearing races 110 and 111 about which the outer turret 61 is rotated.
  • the turret 61 has formed on the under surface thereof a ring gear 113 which meshes with the bevel gear 93 on the driving shaft 87.
  • Carried by the outer turret 61 are a plurality of strand supply holders or cops 117, of which there are eight, equally spaced about the turret. These strand supply holders or cops 117 are each equipped with a paddle brake 118 of a type which prevents the cop from overrunning when the machine is stopped suddenly.
  • each cop Secured to the outer turret 61 are a plurality of thread guide supports 119, one associated with each cop, which carry at their outer extremities eyelets 120 and which also support intermediate their ends an eyelet 121, the purpose of which will become apparent as the description progresses.
  • a sleeve 123 Mounted within the upwardly extending tubular portion 83 of the pedestal 59 is a sleeve 123 which is journaled at its upper end in a bearing race 127 disposed between it and the upper end of the pedestal 59.
  • the lower end of the sleeve 123 has secured thereto a ring gear 128 which meshes with the bevel gear 97 mounted on the driving shaft 87.
  • the sleeve 123* has formed on the upper end thereof a track carrying casting 129 which has formed integral therewith an annular track 130 in which a series of slots 131 are formed at points therein adjacent the eyelet 120 mounted onthe thread guide supports 119.
  • the casting 129 has an annular shoulder 132 formed thereon to which is secured a spiral ring gear 133 and carries at spaced intervals about its periphery a plurality of arcuately shaped guide members 134 which are of such configuration or contour as to maintain strands drawn from a supply holder through the eyelet 120 under a constant tension. Specifically the contour of these members 134 is determined by the outermost point of the strand passing through the eyelet 120 and as-shown the members 134 are arcuate shaped.
  • a hollow shaft 138 which has keyed thereto adjacent the lower end thereof a ring gear 139.
  • the ring gear 139 has a passage 140 formed therein at the outer extremity of which is connected a spirally shaped scoop 141 which, upon rotation of the hollow shaft 138, will rotate in the annular oil reservoir 100.
  • Fixed to the upper end of the hollow shaft 138 is the inner turret 62 which has journaled therein eight shafts 143, each of which carries at one end thereof a mutilated disk 147 provided with diametrically opposite margmal slots or grooves 147-A for the passage of strands or threads (Fig.
  • spiral gear 148 meshes with the spiral ring gear 133 and since the spiral ring gear 133 is rotated in a direction opposite to the direction of rotation of the turret 62 a rotary motion will be imparted to the spiral gears 148 and disks 147.
  • the annular track 130 has a groove 149 extending around the periphery thereof in which an arcuately shaped member or carrier 150 is slidably mounted.
  • the arcuately shaped member 150 has extending therefrom a strand supply holder or cop 151 equipped with a paddle brake 152 of any suitable type which engages the surface of the cop to prevent backlash in the event that the machine is suddenly stopped and maintain a constant tension on a thread being drawn from the cop.
  • a supporting frame 153 which has rotatably mounted thereon a ball bearing supported disk or roller 154 adapted to engage the inner surface of the annular track 130 when the supply holders are rotated at high speed about the' annular track.
  • a strand guide 155 extends outwardly and upwardl from the arcuately shaped member 150.
  • Klounted on the underside of the supporting frame 153 is a slotted shoulder 157 in the slot of which the mutilated disk 147 is rotated. From the foregoing, it will be apparent that the mutilated disks being rotated in the slotted shoulder 157 and being simultaneously rotated about the axis of the hollow shaft 138 will draw the strand supply holder around the annular track 130 in a direction opposite to the direction of travel of theannular track.
  • the hollow shaft 138 has secured to the inner surface thereof a tubular member 158 which cooperates with the inner wall of the hollow shaft to form an annular passageway 159 longitudinally of the shaft. Ad acent the lower end of the hollow shaft 138 the passageway 159 communicates with the passage 140 and oil which has been picked up by the spirally shaped scoop 141 will be forced upwardly through the passage 140, communicating passageway 159 to apertures 160,161, 162, and 163 formed in the hollow shaft 138 to lubricate the various rotating members. The lubricant thus raised to the top of the machine will then be permitted to return by gravity through an aperture 167 in the track carrying casting 129and aperture 168 in the annular .turret 112. Passages 164 conduct the oil from the top aperture 163 to lubricate the shafts 143.
  • the distributing mechanism comprises a sheave 170'freely rotatable on the end of a bracket 171 which extends outwardly from the front of the table 12 and which has a roller 172 journaled therein and engaging the inner surface of a depending frontportion 17 3 of the table.
  • bracket 171 removed from the sheave 170 is threadedly mounted on a threaded member 17 7 so that upon rotation of the threaded member 177 the bracket will carry the sheave longitudinally of the threaded member 177 and since the threaded member extends transversely of the take-up reel 17, the sheave will be moved back and forth across the reel depending upon the direction of rotation of the threaded member.
  • the threaded member 177 is rotated by means of a ratchet gear 17 8 secured thereto by means of a pin 179 and adapted to be rotated step by step by a pawl 180.
  • the pawl is carried at the upper end of an oval shaped member 181 which is freely rotatable about the threaded member 177 and the longer portions of which extend vertically.
  • Pivoted to the oval shaped member 181 at 182 is a rocker member 183 which carries at its upper end a substantially semi-circular spring 187 which has a depressed portion 188 adapted to engage the pawl at either side of its axis depending upon the position of the rocker memher, which position may be controlled automatically in a manner to be described hereinafter.
  • the pawl is reciprocated by a rocker arm 189 attached to the pulley 20 which drives the take-up reel 17.
  • the length of the stroke of the rocker arm 189 may be regulated by means of an eccentric 190 positioned between it and the pulley 20 as shown in Fig. 5 wherein the eccentric 199 is shown as being rotatable about the pivot 191.
  • the eccentric may be secured to the pulley in any desired position by placing any one of a plurality of apertures 193 formed therein over a pin 194 attached to the pulley.
  • the outer ends of the pins 197 engage lugs 198 formed on the rocker member 183 and move it either to the left or the right as viewed in-Fig. 7 to change the position of'the depressed portion 188 of the spring 187 with respect to the axis about which the pawl 180 is pivoted.
  • Formed adjacent the end of the threaded member 177 is an annular groove 199 into which either one of the pins 197 may be slid upon longitudinal movement of the threaded member 177'.
  • the threaded member 177 is rotatably supported in bearings 200 and 201 so that it may be rotated by the ratchet gear 178 and may-be moved longitudinally by the engagement of the bracket 171 with one of the bearings 200 or 201 and the continued operation of the pawl and ratchet mechanism.
  • the annular groove 199 formed in the threaded member will be shifted from association with one of the pins 197 into association with the other of the pins whereupon the pins will move the rocker member to the right or'the left (Fig.
  • the operation of the braiding machine is as follows:
  • the supply reel 16 con taining a supply of rubber covered wire to which a braided covering is to be applied is rolled up the ramps 174 under the table 12 and onto the journals provided therefor, whereupon the strand 18 is drawn from the supply reel and passed through the tubular member 158 extending through the machine, through the thread guide 79, and passed several times around the capstan 32, and drawn from there to the guide sheave 170.
  • the strand is drawn over the guide sheave 170 and attached in any suitable manner to the takeup reel 17 which has been placed under the table 12.
  • a strand from each of the upper strand supply holders 151 is passed under the curved portion of its associated strand guide 155 and over the upper arm thereof and then attached to the strand 18 which is ,to be covered and a strand is drawn from each of the lower strand supply holders 117 and passed through eyelets 121 and 120 and thence around the arcuately shaped guide member 134 associated with that particular strand supply holder and eyelet and is attached to the strand 18 to be covered.
  • the motor (not shown) may now be started to drive simultaneously the sprocket gear 90 and the distributing mechanism 169.
  • the sprocket gear and its associated shaft 87 will thus be rotated and will drive the outer turret in a clockwise direction together with the track supporting casting 129 and theguide members 134 supported thereby.
  • the same shaft will, through the pinion 97, drive the hollow shaft 138 in a counter-clockwise direction to carry theinner turret 62 in acounterclockwise direction.
  • Rotation of the hollow shaft 138 will rotate the scoop 141 in the oil reservoir 100 causing it to pick up oil and advance it upwardly through the passageway formed by the inner surface of the hollow shaft and the outer surface of the tubular member 158.
  • the guide castings will direct the strands from the outer supplies alternately under two of the inner sets of strand supplies and over two of the inner sets of strand supplies, the strand being deflected into the slot 131 and through the mutilated port-ion of the disks 147 while the upper strand supply holders are passed over b the slot under the impetus furnished thereto by the disks 14:7.
  • the contour of the downwardly and upwardly extending guide castings is such that the strand from the supply holder 117 will be directed downwardly and upwardly without an appreciable change in the tension thereof at any time in the braiding operation. In this manner a braided covering will be applied to the strand 18 prior to its being advanced to the capstan 32.
  • the covered strand 18 which has been passed over the sheave 170 will then be laid in even layers upon the take-up reel 17 by the sheave 17 0 which is moved back and forth across the reel in the following manner Assume that the sheave 170 at the beginning of the braiding operation is in its extreme left-hand position (Fig. 1) and that the right-hand pin 179 is engaging the annular groove 199. With the parts in this tion, the depressed portion 188 of the spring 187 will be engaging the pawl 180 at'a point to the left (Fig. 7) of its pivot point causing the left side of the pawl to engage the ratchet 178.
  • inner and outer sets of strand supply carriers means for rotating said sets of carriers in opposite directions about a common axis, with .an annular groove means for said carriers at comprising a member for engagement with said groove, and an anti-friction disk for engaging an opposite-surface of said annular track.
  • inner and outer sets of strand supply holders means for rotating the holders in opposite directions and supporting one end thereof,
  • pawl 180 at a point to the right a track provided about a common axis, means for supporting the inner supply holders including an annular track having a. groove in the outer. peripheral surface thereof, a supply holder carrier for traveling on the annular track, comprising a supporting frame, an arcuate member attached thereto for engaging the groove in the track, and a roller bearing member for engaging theopposite surface of the track to reduce friction caused by centrifugal force during rotation of the supply holders.
  • a cylindrical guide track In a braiding machine, a cylindrical guide track, a strand supply carrier extending outwardly from said track rotatable around the track and a single thrust roller of comparatively large diameter carried by the carrier and engaging the inner surface of the track.
  • a cylindrical guide track having a continuous slot in the outer surface thereof, and a strand supply carrier rotatable around the guide track, the carrier having a guide shoe engaging the slot in the outer surface of the track and a thrust roller engaging the inner surface of the track.
  • inner and outer strand supply carriers arranged to rotate in opposite directions about a common axis, a cylindrical track for guiding the inner supply carriers, and a single thrust roller of comparatively large diameter carried by each of the inner carriers, for engagement with the inner surface of the track.
  • inner and outer strand supply carriers arranged to rotate in opposite directions'about a common axis, and a cylindrical guide track for the inner carriers having a continuous slot in the outer surface thereof, the inner carriers having guide shoes engaging the slot and thrust rollers engaging the inner surface of the track.
  • inner and outer strand supplies each supported atone end only and arranged about a common axis with their individual axes extending radially of the common axis and in parallel horizontal planes, and means for rotating the inner supplies around the common axis extending obthe inner carriers around the common axis, and having slots for the passage of strands from the outer supplies alternately over and under the strands from the inner supplies.
  • inner and outer strand supply carriers rotatable about a common axis, and means for rotating the inner carriers around said axis, comprisingdisks engaging the inner carriers and disposed obliquely with respect to the axes of the asso- Y ciated inner strand supplies.
  • inner and outer strand supply carriers rotatable about a common axis, the inner carriers having grooves disposed obliquely with respect to their path around the common axis, and rotary disks engaging the grooves and provided with slots for the passage of strands from the outer supplies alternately over and under the strands from the inner supplies.
  • inner and outer strand supply carriers rotatable about a common axis, the inner carriers having grooves disposed obliquely with respect to their path around the common axis, rotary disks engaging the grooves and provided with marginal. slots for the passage of strands from the outer supplies alternately over and under the strands from the inner supplies, means for rotating the disks, and means for simultaneously carrying the disks around the common axis to thereby rotate the inner carriers about said axis.
  • inner and outer strand supply carriers rotatable about a common axis, and means for rotating the inner carriers around said axis, comprising disks en aging the inner carriers and disposed obliquely with respect to the path of the associated inner carriers around the common axis.
  • inner and outer strand supply carriers rotatable about a common axis, and means for rotating the inner carriers around said axis, comprising rotary disks engaging the inner carriers, disposed obliquely with respect to the path of

Description

Jan. 1933- I G. E. HENNING 1,895,452
BRAIDING MACHINE Filed Jan. 1, 1930 5 Sheets-Sheet l Mel;
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Gem" efiffermin Jan. 31, 1933. HENNlNG 1,895,462
BRAIDING MACHINE Filed Jan. 1, 1930 5 Sheets-Sheet 2 fizz/m far- Geozye 51992272172 Jan. 31, 1933. G E, NNH G 1,895,462
BRAIDING MACHINE Filed Jan. 1. 1930 5 Sheets-Sheet 3 J J 1933- G. E. HENNING 1,895,462
BRAIDING MACHINE Filed Jan. 1. 1950 5 Sheets-Sheet 4 Jan. 31, 1933., HENNlNG 1,895,462
BRAIDING MACHINE Filed Jan. 1, 1930 5 Sheets-Sheet 5 6 jww Patented Jan. 31, 1933 UNITED STATES PATENT. OFFICE GEORGE E. HENNING, OF BALTIMORE, MARYLAND, ASSIGNOR TO WESTERN ELECTRIC COMPAN Y, INCORPORATED, 013 NEW YORK, N. Y., A CORPORATION OF NEW YORK BRAIDING MACHINE Application filed. January 1, 1930. Serial No. 417,837.
This invention relates to braiding machines, and more particularly to braiding machines for applying an enclosing sheath to electrical conductors' The principal object of the present invention is a braiding machine having a minimum number of parts arranged to cooperate to braid strands of material accurately and efficiently and at a high speed with a minimum amount of vibration.
In accordance with the general features of the invention, there is provided in one embodiment thereof, a braiding machine having a central spindle around which two sets or series of cop carriers rotate with the cops of each set or series having their axes in spaced parallel longitudinal planes. Power is communicated to the lowermost of the cop carriers directly from a bevel gear connection, but in the case of the upper cop carriers which has its cops proper mounted on ball bearings, power is transmitted through disks having oppositely disposed grooves, which are secured to a shaft rotated from the central spindle, and which permit strands from the cops to pass in and around each other to effect the braiding operation. Switching of the strands is accomplished by a set of alternately downwardly and upwardly directed stationary cast deflecting fingers which cooperate with a set of fingers rotating with the lower cop carriers and having a contour determined by the outermost point of the strands from the lower cops to maintain a substantially constant tension and thereby minimize breakage of the strands. Further, the operation of the machine is facilitated and expedited by having a distributor associated with a take-up spool which consists of a one-way threaded screw cooperating with a reversible pawl mechanism for driving the screw in opposite directions to distribute accurately and uniformly the braided material on the take-up spool. In addition to these outstanding features, the braiding machine is equippedwith a mechanism for drawing oil from a source of supply and elevating the oil to a point where it flows over the several moving parts, and also the 50 entire braiding machine is enclosed in a housing having a slidable door which allows easy and free access to all parts of the braider and which, when closed, materially reduces the noise and the possibility of injury to the operator.
Other features and advantages of the invention will become apparent from the following detailed description, reference being had to the accompanying drawings, wherein Fig. l is a front elevational view of a braiding machine embodying the features of the invention;
Fig. 2 is a fragmentary front elevational view of the machine, some parts being omitted for the sake of clarity;
Fig. 3 is a fragmentary vertical sectional .view taken on the line 33 of Fig. l in the direction of the arrows;
Fig. 4 is a fragmentary horizontal sectional view taken on the line 4-4 of Fig. 1 in the direction of the arrows;
Fig. 5 is a fragmentary vertical sectional view taken on the line 55 of Fig. 1 in the direction of the arrows;
Fig. 6 is a fragmentary sectional View taken on the line 66 of Fig. 5 in the direction of the arrows;
Fig. 7 is a fragmentary vertical sectional view on line 77 of Fig. 1 in the direction of the arrows;
Fig. 8 is a fragmentary horizontal sectional view taken on the line 8-8 of Fig. 7, and
Fig. 9 is a plan view, partially insection, showing the capstan drive.
Referring now to the drawings wherein like reference characters designate the same parts throughout the several views, the numeral 11 designates generally a braiding machine embodying the features of theinvention mounted on a table12 provided with suitable supporting standards 13. Beneath the table 12 there is provided a partition 14 for separating a supply reel-16 from a takeup reel 17. A strand of rubber covered wire 18 may be drawn from the reel 16 and advanced through the braiding machine 11 wherein it is covered with abraided sheath and thence to the take-up reel' 17.
The reel 17 is rotated by a motor (not shown)- which drives a belt 19 cooperating with a pulley 20. The pulley 20 is mounted on a stud shaft 21 journaled on the end of a rocker arm 22 which has a spring 23 attached to the outer end thereof for normally urging the pulley downwardly to maintain tension between the belt and the pulley and to permit a slipping engagement therebetween to allow for changes in the diameter of the takeup spool as the material is wound thereon. Secured to the opposite end of the stud shaft 21 is a small gear 27 which meshes with and drives a large gear 28 which is secured to a shaft 29. Formed on the large gear 28 is a pin which may be inserted in an aperture 30 in the head of the reel 17 when the shaft 29 is inserted in the reel 17.
It will be apparent from the foregoing description that the shaft 29 carrying the gear 28 is inserted in the reel 17 before the reel is placed in the machine. After the shaft 29 and gear 28 have been associated with the reel it is rolled into positionunder the table 12 and the shaft 29 placed in journals 31 provided therefor on the standard 13 and partition 14.
The strand being covered is drawn through the braiding mechanism 11 by a capstan 32 mounted on a bracket 33 secured to the top of the table 12. Secured to they capstan 32 is a ring gear 37 which meshes with a pinion 38 carried on the end of a shaft 39 journaled into suitable bearings 40 and 41 formed on the bracket 33. The shaft 39 carries a bevel gear 42 which meshes with and is driven by a pinion 43 mounted on the upper end of a vertically extending shaft 47 also journaled in a bearing 48 formed on the bracket 33. Mounted on the end of the vertically extending shaft 47 is bevel gear 49 which meshes with a pinion 50 mounted on a shaft 51 journaled in a bearing member 52 secured to the underside of the table 12.. The shaft 51 also supports a pulley 53 for driving the belt 19, and a pulley 58 which is driven by the motor (not shown).
The braiding machine 11 comprises three principal parts, the stationary supporting portion which includes a pedestal 59 and a guard or hood 60, an outer rotatable turret 61, and an inner rotatable turret 62. For the sake of simplifying the disclosures, these parts will be described separately and in the order in which they are mentioned hereinbefore. i
The ard or hood 60 surrounds the movable parts of the mechanism and is comprised of a sheet metal hood 63 provided with an opening on one side thereof as shown at 64 which may be closed by a slidable door 67. The door 67 is provided with a handle 68 and is supported on rollers 69 which engage the table 12 and the lower edge of the wall of the hood as shown at 70 when .the door is in one position and engage the top of the table 12 and a channel member 71 which conforms to the general contour of the hood and to which the lower edge of the wall of the hood is secured. Extending from the upper edge of the door 67 is a top segment 72 which is rotatably secured to an annular member 73 in turn secured to the top of the hood 63 at the center thereof. The annular member 73 is threaded internally and a projecting portion of a bracket 77 having an opening 78 therein which corresponds to the openingin the annular member 73 is threaded externally and threadedly engages the annular member 73. The bracket 77 is semi-circular in configuration and has threaded in its lower end a thread guide 79 which may be adjusted vertically and locked in any desired position by a lock nut 80. Disposed in a circle about the underside of the hood 63 are four depending, arcuately shaped guide castings 81, the function of which will become apparent as the description progresses.
The table 12 has mounted thereon a three footed hollow pedestal 59 comprising an upwardly extending tubular portion 83 and feet 84 in one of which feet is journaled a driving shaft 87 to which are secured hearing races 88 which cooperate with hearing retainers 89 secured to the foot 84 of the pedestal 59. The left end (Fig. 3) of the driving shaft 87 has keyed thereto a sprocket.
gear 90 and a brake drum 91. The drum 91 may be acted upon by any suitable braking mechanism (not shown) to stop the machine, and the sprocket gear 90 is driven by a chain 92 connectedin any suitable manner to the motor (not shown) which drives the take-up reel. Secured to the right end of the driving shaft 87 are a pair of bevel gears 93 and 97 between which a depending portion 98 of the pedestal 59 acts as a supporting bearing for the driving shaft 87.
, An oil guard 99 encloses each of the feet 84 of the hollow pedestal 59 to prevent a lubricating medium used to lubricate the moving parts of the machine from coming in contact with the material being worked upon and an annular oil reservoir 100 is secured to the underside of the table 12 and has formed internally thereof an annular guide member 101.- Secured to the underside of the annular guide member 101 is a bracket 102 which supports a guide roller 103 adapted to direct a strand drawn from the supply reel through the center of the braiding mechanism 11.
The annular guide member also forms a part of the oil reservoir which has a perforated annular apron 104 therein which prevents the lubricant from being splashed out of the reservolr.
' An annular cup shaped casting 107 is keyed at 108 to the upwardly extending portion 83 of the pedestal 59. This casting has secured about its periphery four outwardly and upwardly extending guide castings 109 which cooperate and are arranged in series with the arcuately shaped guide castings 81.
The upwardly extending tubular portion 83 of the pedestal 59 carries externally thereof bearing races 110 and 111 about which the outer turret 61 is rotated. The turret 61 has formed on the under surface thereof a ring gear 113 which meshes with the bevel gear 93 on the driving shaft 87. Carried by the outer turret 61 are a plurality of strand supply holders or cops 117, of which there are eight, equally spaced about the turret. These strand supply holders or cops 117 are each equipped with a paddle brake 118 of a type which prevents the cop from overrunning when the machine is stopped suddenly. Secured to the outer turret 61 are a plurality of thread guide supports 119, one associated with each cop, which carry at their outer extremities eyelets 120 and which also support intermediate their ends an eyelet 121, the purpose of which will become apparent as the description progresses.
Mounted within the upwardly extending tubular portion 83 of the pedestal 59 is a sleeve 123 which is journaled at its upper end in a bearing race 127 disposed between it and the upper end of the pedestal 59. The lower end of the sleeve 123 has secured thereto a ring gear 128 which meshes with the bevel gear 97 mounted on the driving shaft 87. From the above, it will be apparent that the sleeve 123 and the outer turret 61 will be rotated in the same direction and at the same rate of speed.
The sleeve 123* has formed on the upper end thereof a track carrying casting 129 which has formed integral therewith an annular track 130 in which a series of slots 131 are formed at points therein adjacent the eyelet 120 mounted onthe thread guide supports 119. The casting 129 has an annular shoulder 132 formed thereon to which is secured a spiral ring gear 133 and carries at spaced intervals about its periphery a plurality of arcuately shaped guide members 134 which are of such configuration or contour as to maintain strands drawn from a supply holder through the eyelet 120 under a constant tension. Specifically the contour of these members 134 is determined by the outermost point of the strand passing through the eyelet 120 and as-shown the members 134 are arcuate shaped.
Rotatably mounted within the sleeve 123 and supported by ball bearings as shown at 137 is a hollow shaft 138 which has keyed thereto adjacent the lower end thereof a ring gear 139.' The ring gear 139 has a passage 140 formed therein at the outer extremity of which is connected a spirally shaped scoop 141 which, upon rotation of the hollow shaft 138, will rotate in the annular oil reservoir 100. Fixed to the upper end of the hollow shaft 138 is the inner turret 62 which has journaled therein eight shafts 143, each of which carries at one end thereof a mutilated disk 147 provided with diametrically opposite margmal slots or grooves 147-A for the passage of strands or threads (Fig. 3) and at the other end a spiral gear 148. The spiral gear 148 meshes with the spiral ring gear 133 and since the spiral ring gear 133 is rotated in a direction opposite to the direction of rotation of the turret 62 a rotary motion will be imparted to the spiral gears 148 and disks 147.
The annular track 130 has a groove 149 extending around the periphery thereof in which an arcuately shaped member or carrier 150 is slidably mounted. The arcuately shaped member 150 has extending therefrom a strand supply holder or cop 151 equipped with a paddle brake 152 of any suitable type which engages the surface of the cop to prevent backlash in the event that the machine is suddenly stopped and maintain a constant tension on a thread being drawn from the cop. Also secured to the arcuately shaped member is a supporting frame 153 which has rotatably mounted thereon a ball bearing supported disk or roller 154 adapted to engage the inner surface of the annular track 130 when the supply holders are rotated at high speed about the' annular track. A strand guide 155 extends outwardly and upwardl from the arcuately shaped member 150. Klounted on the underside of the supporting frame 153 is a slotted shoulder 157 in the slot of which the mutilated disk 147 is rotated. From the foregoing, it will be apparent that the mutilated disks being rotated in the slotted shoulder 157 and being simultaneously rotated about the axis of the hollow shaft 138 will draw the strand supply holder around the annular track 130 in a direction opposite to the direction of travel of theannular track.
The hollow shaft 138 has secured to the inner surface thereof a tubular member 158 which cooperates with the inner wall of the hollow shaft to form an annular passageway 159 longitudinally of the shaft. Ad acent the lower end of the hollow shaft 138 the passageway 159 communicates with the passage 140 and oil which has been picked up by the spirally shaped scoop 141 will be forced upwardly through the passage 140, communicating passageway 159 to apertures 160,161, 162, and 163 formed in the hollow shaft 138 to lubricate the various rotating members. The lubricant thus raised to the top of the machine will then be permitted to return by gravity through an aperture 167 in the track carrying casting 129and aperture 168 in the annular .turret 112. Passages 164 conduct the oil from the top aperture 163 to lubricate the shafts 143.
After the strand of wire 18 has passed through the braiding mechanism 11 and has had a braided covering formed thereon by the braiding mechanism, it is directed to the take-up reel 17 which has been rolled up ramps 174 and positioned in suitable bearings 31 provided therefor, and deposited thereon in even layers by a distributing mechanism designated generally by the numeral 169. The distributing mechanism comprises a sheave 170'freely rotatable on the end of a bracket 171 which extends outwardly from the front of the table 12 and which has a roller 172 journaled therein and engaging the inner surface of a depending frontportion 17 3 of the table. The end of the bracket 171 removed from the sheave 170 is threadedly mounted on a threaded member 17 7 so that upon rotation of the threaded member 177 the bracket will carry the sheave longitudinally of the threaded member 177 and since the threaded member extends transversely of the take-up reel 17, the sheave will be moved back and forth across the reel depending upon the direction of rotation of the threaded member.
The threaded member 177 is rotated by means of a ratchet gear 17 8 secured thereto by means of a pin 179 and adapted to be rotated step by step by a pawl 180. The pawl is carried at the upper end of an oval shaped member 181 which is freely rotatable about the threaded member 177 and the longer portions of which extend vertically. Pivoted to the oval shaped member 181 at 182 is a rocker member 183 which carries at its upper end a substantially semi-circular spring 187 which has a depressed portion 188 adapted to engage the pawl at either side of its axis depending upon the position of the rocker memher, which position may be controlled automatically in a manner to be described hereinafter. The pawl is reciprocated by a rocker arm 189 attached to the pulley 20 which drives the take-up reel 17.
The length of the stroke of the rocker arm 189 may be regulated by means of an eccentric 190 positioned between it and the pulley 20 as shown in Fig. 5 wherein the eccentric 199 is shown as being rotatable about the pivot 191. The eccentric may be secured to the pulley in any desired position by placing any one of a plurality of apertures 193 formed therein over a pin 194 attached to the pulley. From the foregoing it will be apparent that the amount of travel of the guide sheave 17 0 may be accurately controlled with reference to the speed of operation of the take-upreel ends engaging the surface of the threaded .member 177. The outer ends of the pins 197 engage lugs 198 formed on the rocker member 183 and move it either to the left or the right as viewed in-Fig. 7 to change the position of'the depressed portion 188 of the spring 187 with respect to the axis about which the pawl 180 is pivoted. Formed adjacent the end of the threaded member 177 is an annular groove 199 into which either one of the pins 197 may be slid upon longitudinal movement of the threaded member 177'. The threaded member 177 is rotatably supported in bearings 200 and 201 so that it may be rotated by the ratchet gear 178 and may-be moved longitudinally by the engagement of the bracket 171 with one of the bearings 200 or 201 and the continued operation of the pawl and ratchet mechanism. Upon such movement occurring, the annular groove 199 formed in the threaded member will be shifted from association with one of the pins 197 into association with the other of the pins whereupon the pins will move the rocker member to the right or'the left (Fig. 7) about itsopivot to change the position of the pawl The operation of the braiding machine, the parts of which have been described hereinbefore, is as follows: The supply reel 16 con taining a supply of rubber covered wire to which a braided covering is to be applied is rolled up the ramps 174 under the table 12 and onto the journals provided therefor, whereupon the strand 18 is drawn from the supply reel and passed through the tubular member 158 extending through the machine, through the thread guide 79, and passed several times around the capstan 32, and drawn from there to the guide sheave 170. The strand is drawn over the guide sheave 170 and attached in any suitable manner to the takeup reel 17 which has been placed under the table 12.
A strand from each of the upper strand supply holders 151 is passed under the curved portion of its associated strand guide 155 and over the upper arm thereof and then attached to the strand 18 which is ,to be covered and a strand is drawn from each of the lower strand supply holders 117 and passed through eyelets 121 and 120 and thence around the arcuately shaped guide member 134 associated with that particular strand supply holder and eyelet and is attached to the strand 18 to be covered.
The motor (not shown) may now be started to drive simultaneously the sprocket gear 90 and the distributing mechanism 169. The sprocket gear and its associated shaft 87 will thus be rotated and will drive the outer turret in a clockwise direction together with the track supporting casting 129 and theguide members 134 supported thereby. The same shaft will, through the pinion 97, drive the hollow shaft 138 in a counter-clockwise direction to carry theinner turret 62 in acounterclockwise direction. Rotation of the hollow shaft 138 will rotate the scoop 141 in the oil reservoir 100 causing it to pick up oil and advance it upwardly through the passageway formed by the inner surface of the hollow shaft and the outer surface of the tubular member 158. The rotation of the inner turret 62' will cause a relative movement between the track carrying casting 129 having the gear 1 33 attachedthereto and the shafts 143 carrying the spiral gear which meshes with the spiral ring gear 133. In this manner the mutilated disks 147 carried by the shafts 143 will be drawn around the axis of rotation of the turret and will simultaneously rotate about the axis of the shafts 143 to alternately carry the mutilated portions thereof into the slotted shoulder 157 of the strand supply holder 151. From the foregoing, it will be apparent that the upper strand supply holders and the lower strand supply holders are rotated about the pedestal 82 and simultaneously therewith the mutilated disk which drives the inner strand supply holders will be rotated.
During the rotation of the outer strand supplies the strand runningfrom the eyelet 120 to the strand or conductor 18 which is being covered, will alternately engage the downwardly extending guide castings 81 and the upwardly extending guide castings 109 and will be directed thereby into and out of'the slots 131 formed in the castings 129. There being four downwardly and four upwardly extending guide castings disposed at equldistant points about the axis of rotation of the strand supply holders, the strand from the supply holder 117 will in each cycle of rotation of the mechanism be directed downwardly four times and upwardly four times. Since there are eight outer and eight inner sets of strand supply holders and since the inner and outer strand supply holders are rotated at the same speed in opposite directions about the common axis, the guide castings will direct the strands from the outer supplies alternately under two of the inner sets of strand supplies and over two of the inner sets of strand supplies, the strand being deflected into the slot 131 and through the mutilated port-ion of the disks 147 while the upper strand supply holders are passed over b the slot under the impetus furnished thereto by the disks 14:7. The contour of the downwardly and upwardly extending guide castings is such that the strand from the supply holder 117 will be directed downwardly and upwardly without an appreciable change in the tension thereof at any time in the braiding operation. In this manner a braided covering will be applied to the strand 18 prior to its being advanced to the capstan 32.
The covered strand 18 which has been passed over the sheave 170 will then be laid in even layers upon the take-up reel 17 by the sheave 17 0 which is moved back and forth across the reel in the following manner Assume that the sheave 170 at the beginning of the braiding operation is in its extreme left-hand position (Fig. 1) and that the right-hand pin 179 is engaging the annular groove 199. With the parts in this tion, the depressed portion 188 of the spring 187 will be engaging the pawl 180 at'a point to the left (Fig. 7) of its pivot point causing the left side of the pawl to engage the ratchet 178. Also let it be assumed that the eccentric 190 has been positioned on the pulley 20 so that the desired amount of reciprocation will be imparted to the rocker arm 189. As soon as the braiding operation is started, as described hereinbefore, reciprocatory motion will be imparted to the rocker arm 189. This will cause the oval shaped member 181, whichcarries the pawl 180, to oscillate and drive the ratchet 178 in a counter-clockwise direction (Fig. 7). Rotation of the ratchet 17 8 in a counter-clockwise direction will cause the threaded member 177 to rotate therewith and thereby drive the racket 171 to the right across thereel until the bracket engages the bearing 201 whereupon further movement of the bracket is prevented and since the reciprocatory motion of the rocker arm continues the threaded member 177 will be shifted to the left. When the threaded member 177 is shifted to the left in this manner the annular groove 199 will be moved out of association with the right-hand pin 17 9 and into association with the left-hand pin 179 whereupon the spring 187 will be moved to the right (Fig. 7) where the depressed portion 188 thereof will be engaging the of its pivot point causing the right side of the pawl to engage the-ratchet 17 8. Further reciprocatory motion being imparted to the rocker arm 189, the ratchet 178 will be rotated in the opposite direction to advance the bracket carrying the sheave 170 to the left until it engages the bearing 200 whereupon the threaded member 177 will be shifted to the right to move the annular groove 199 into association with the right hand pin 179 and the pawl will again be reversed and will engage the ratchet with its left side. The racket carrying the sheave 170 will thus be moved back and forth across the reel.
What is claimed is:
'1. In a braiding machine, inner and outer sets of strand supply carriers, means for rotating said sets of carriers in opposite directions about a common axis, with .an annular groove means for said carriers at comprising a member for engagement with said groove, and an anti-friction disk for engaging an opposite-surface of said annular track.
2. In a braiding machine, inner and outer sets of strand supply holders, means for rotating the holders in opposite directions and supporting one end thereof,
pawl 180 at a point to the right a track provided about a common axis, means for supporting the inner supply holders including an annular track having a. groove in the outer. peripheral surface thereof, a supply holder carrier for traveling on the annular track, comprising a supporting frame, an arcuate member attached thereto for engaging the groove in the track, and a roller bearing member for engaging theopposite surface of the track to reduce friction caused by centrifugal force during rotation of the supply holders. Y
3. In a braiding machine, a cylindrical guide track, a strand supply carrier extending outwardly from said track rotatable around the track and a single thrust roller of comparatively large diameter carried by the carrier and engaging the inner surface of the track.
4. In a braiding machine, a cylindrical guide track having a continuous slot in the outer surface thereof, and a strand supply carrier rotatable around the guide track, the carrier having a guide shoe engaging the slot in the outer surface of the track and a thrust roller engaging the inner surface of the track.
5. In a braiding machine, inner and outer strand supply carriers arranged to rotate in opposite directions about a common axis, a cylindrical track for guiding the inner supply carriers, and a single thrust roller of comparatively large diameter carried by each of the inner carriers, for engagement with the inner surface of the track.
6. In a braiding machine, inner and outer strand supply carriers arranged to rotate in opposite directions'about a common axis, and a cylindrical guide track for the inner carriers having a continuous slot in the outer surface thereof, the inner carriers having guide shoes engaging the slot and thrust rollers engaging the inner surface of the track. p
7. In a braiding machine, inner and outer strand supplies each supported atone end only and arranged about a common axis with their individual axes extending radially of the common axis and in parallel horizontal planes, and means for rotating the inner supplies around the common axis extending obthe inner carriers around the common axis, and having slots for the passage of strands from the outer supplies alternately over and under the strands from the inner supplies.
10. In a braiding machine, inner and outer strand supply carriers rotatable about a common axis, and means for rotating the inner carriers around said axis, comprisingdisks engaging the inner carriers and disposed obliquely with respect to the axes of the asso- Y ciated inner strand supplies.
11. In a braiding machine, inner and outer strand supply carriers rotatable about a common axis, the inner carriers having grooves disposed obliquely with respect to their path around the common axis, and rotary disks engaging the grooves and provided with slots for the passage of strands from the outer supplies alternately over and under the strands from the inner supplies.
12. In a braiding machine, inner and outer strand supply carriers rotatable about a common axis, the inner carriers having grooves disposed obliquely with respect to their path around the common axis, rotary disks engaging the grooves and provided with marginal. slots for the passage of strands from the outer supplies alternately over and under the strands from the inner supplies, means for rotating the disks, and means for simultaneously carrying the disks around the common axis to thereby rotate the inner carriers about said axis.
In witness whereof, I hereunto subscribe my name this 27 day of December A. D., 1929.
GEORGE E. HENNING.
liquely with respect to the path of the inner supplies.
8. Ina braiding machine, inner and outer strand supply carriers rotatable about a common axis, and means for rotating the inner carriers around said axis, comprising disks en aging the inner carriers and disposed obliquely with respect to the path of the associated inner carriers around the common axis.
9. In a braiding machine, inner and outer strand supply carriers rotatable about a common axis, and means for rotating the inner carriers around said axis, comprising rotary disks engaging the inner carriers, disposed obliquely with respect to the path of
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