US2440185A - Machine for stranding wires - Google Patents

Machine for stranding wires Download PDF

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Publication number
US2440185A
US2440185A US687774A US68777446A US2440185A US 2440185 A US2440185 A US 2440185A US 687774 A US687774 A US 687774A US 68777446 A US68777446 A US 68777446A US 2440185 A US2440185 A US 2440185A
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US
United States
Prior art keywords
frame
wire
machine
circuit
insulated
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
US687774A
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English (en)
Inventor
Prosser Alfred James
Smith Ernest Alfred
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
WT Henleys Telegraph Works Co Ltd
Original Assignee
WT Henleys Telegraph Works Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority claimed from GB2248645A external-priority patent/GB598094A/en
Application filed by WT Henleys Telegraph Works Co Ltd filed Critical WT Henleys Telegraph Works Co Ltd
Application granted granted Critical
Publication of US2440185A publication Critical patent/US2440185A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • D—TEXTILES; PAPER
    • D07—ROPES; CABLES OTHER THAN ELECTRIC
    • D07B—ROPES OR CABLES IN GENERAL
    • D07B7/00—Details of, or auxiliary devices incorporated in, rope- or cable-making machines; Auxiliary apparatus associated with such machines
    • D07B7/02—Machine details; Auxiliary devices
    • D07B7/08—Alarms or stop motions responsive to exhaustion or breakage of filamentary material fed from supply reels or bobbins

Definitions

  • This invention relates to machines for assembling wires into strands by twisting together the wires drawn off from reels carried. in a rotating frame and, in particular, it deals with the type of machine, frequently called a high speed strander, in which the rotating frame is a long tubular structure within-which the reels are ar-
  • the wire taken from each reel is carried therefrom to and over a guide at or near the inner surface of the wall of the frame, along this wall to the forward end of the frame and then inwards towards the axis and through a can tral aperture in the end plate of the frame and then through the bearing, if present, to a closing die in which the. wires, already twisted together, areformed to a strand of the required diameter.
  • the invention provides improved automatic means for stopping such a machine when the wire from any of the reels comes to an end or breaks.
  • This stopping action is initiated through an electric circuit arrangement in which are included in turn at short intervals of time all the wires in their passage from the reels to the outlet from the frame so that any break in continuity of any wire in the course of this passage opens a circuit.
  • each wire while within the frame is caused to pass over a contact that is insulated from the frame and from each of these contacts connection is made to an external circuit at short intervals of time.
  • the external circuit forms part of a control circuit connected with a source of current.
  • Within the frame the control circuit is normally completed through the wires which pass over the contacts. These wires are connected electrically in the strand and are usually also connected through the reels and the frame of the machine. If any one wire has a break the control circuit of which that wire is part is broken and a control device is accordingly brought into action by that circuit.
  • Figure 1 is a diagrammatic view of an eight bobbin machine incorporating the improved stopping device
  • Figure 5. is a cross-section on the line V--V of Figure 4.
  • FIG. 6 is a circuit diagram showing the connections to and from the collector gear of Figure 3,
  • Figure '7 is a detail of a second form of insulated guide, also drawn to a large scale as compared with Figure 1, and
  • Figure 8 is a circuit diagram'showing a modification of the circuit shown in Figure 6.
  • the stranding machine shown diagrammatically in Figure 1 comprises. a rotatably supported tubular frame I driven through gearing 2 by a driving motor M controlled by switchgear SW.
  • the frame carries eight reels 5, of which five are shown, each arranged with its axis coincident with the axis of the rotatably driven frame I.
  • the wire 6 drawn off from each reel passes to and is carried over a guide 1 at or near the inner surface of the wall of the frame, along this wall to a guide 8 at the forward end of the frame andthen inward towards the axis and through a central aperture in the end wall 9v of the frame to a closing die in which the wires are formed to a strand I 0 of the required diameter.
  • Theinsulated contacts over which, in accordance with the invention, the wires are con strained to pass, are conveniently arranged all together in one region near the outlet end of the frame, being constituted by the guides 3 whichare in the form of pulleys carried by a pulley bracket ll secured toubut insulated from the wall of the frame by a bush f2 and washers H of insulating material, as shown in Figure 2.
  • the sleeve is preferably of hard wearing metal and is secured to the machine frame I by a stud Ill and insulated therefrom by a bush H2 and washers H3 of insulating material.
  • each insulated contact is intermittently connected for a short interval of time to an external control circuit comprising a relay R, and a source of current B.
  • collector gear C comprises a ring [6 of insulating material carrying on its periphery a number of segments ll'a, lib Hit, of conductive material, one segment for each reel 5.
  • the ring is mounted on the tail end of a tubular shaft 53 running in a bearing l9 and serving as one of the supports for the frame I.
  • a single collector brush 2!] is carried by a brush support 2
  • a segmental ring of comparatively small diameter there may be used, as shown in Figures 4 and 5 a large diameter ring H6 encircling the frame I and carrying segmentsll7a,ll1b illh swept by abrush I20.
  • the brush 2% is wide enough to bridge the gap between adjacent segments so that as long as all the wires remain intact, the circuit remains complete during rotation of the machine, this circuit extending, at any instant when the brush is not bridging the gap between two segments, from one terminal of the source of supply B, through the winding of the relay R, through the brush 2c and the segment underneath it, through the lead extending therefrom the associated insulated contact 8 and the wire 6 in engagement therewith and then through the reelfrom which that wire is being drawn off, to the machine frame to which the other terminal of the source of supply B is grounded.
  • the relay R is a relay of a sumciently quick acting type to ensure that it will be effective in a time less than the time between the moment the segment before a segment associated with a broken wire leaves the brush and the moment the segment following the broken wire segment reaches the brush. Actuation of the relay R trips the switch gear SW which cuts off the power supply to the motor M and preferably also applies a brake BR to the motor shaft.
  • circuit shown in Figure 6 can be varied by employing a second brush 20b and making the circuit through two brushes, two insulated leads and two wires in series, the relay R and battery B being connected in series across the. two brushes, as shown in Fig. 8.
  • a stranding machine comprising a rotatably driven frame, a plurality of wire-supplying reels housed in said frame, a plurality of contacts, one for each reel, insulated from said frame and over which the wires pass on their way from the reels to the outlet from the frame, a plurality of internal circuits, each including one of the insulated contacts and the wire passing thereover, an external circuit including a source of current and a control device for stopping the machine which device is brought into action on the cessation of current flow therethrough, and means for connecting each internal circuit in turn and at short intervals of time to the external circuit before disconnecting the previously connected internal circuit therefrom, whereby to maintain for the control device a circuit which under normal running conditions is complete but which is interrupted'on the occurrence of a break in any of the wires between the supply reel and the outlet from the frame.
  • a stranding machine comprising a rotatably driven frame, a plurality of wire-supplying reels housed in said frame, a plurality of contacts, one for each reel, insulated from the said frame and over which the wires pass on their way from the reels to the outlet from the frame, a segmental ring rotating with said frame and built up of a plurality of mutually insulated segments,.one for each insulated contact, a plurality of insulatedv leads for connectingeach segment to one of said insulated contacts, a brush sweeping said seg.-.
  • a stranding machine comprising a rotatably driven frame, a plurality of wire-supplyingree'ls housed in said frame, a'plurality of contacts, one for each reel, insulated from said frame and over which the wires pass on their way from the reels to the outlet from the frame, a segmental ring rotating with said frame and built up of a plurality of mutually insulated segments, one for each insulated contact, a plurality of insulated leads for connecting each segment to one of said insulated contacts, a pair of circumferentially spaced brushes sweeping said segmental ring and each having a circumferential length of face greater than the gap between two adjacent segments, and connected across said brushes, a source of current and a quick-acting relay which operates and stops the machine on interruption, as by breakage of a Wire, of a circuit which includes the relay and is normally completed through the Wires passing over the insulated contacts connected to the segments engaged by the brushes.
  • each of the insulated contacts is a pulley Which is carried by a support passing through the wall of the frame and insulated therefrom and deflects the wire in its passing to the outlet end of the frame.
  • Control means for stopping a stranding machine having a rotating frame housing a plurality of wire-supplying reels, when the wire from any of said reels comes to an end or breaks, comprising an electric circuit including one of the wires 5 passing from the reels to the outlet for the rotating frame, a control device for stopping the machine included in said circuit and actuated by interruption of said circuit, and a switch for replacing the wire included-in said circuit by each of the other wires in turn at short intervals of time and without interrupting said. circuit,

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  • Wire Processing (AREA)
US687774A 1945-08-31 1946-08-01 Machine for stranding wires Expired - Lifetime US2440185A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB2248645A GB598094A (en) 1945-08-31 Improvements in machines for stranding wires

Publications (1)

Publication Number Publication Date
US2440185A true US2440185A (en) 1948-04-20

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ID=10180180

Family Applications (1)

Application Number Title Priority Date Filing Date
US687774A Expired - Lifetime US2440185A (en) 1945-08-31 1946-08-01 Machine for stranding wires

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US (1) US2440185A (en))
BE (1) BE472338A (en))

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2770091A (en) * 1954-01-07 1956-11-13 Gen Dynamics Corp Control unit for cable spinning machine
US3345812A (en) * 1966-11-23 1967-10-10 Gen Time Corp Strand break detector

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
None *

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2770091A (en) * 1954-01-07 1956-11-13 Gen Dynamics Corp Control unit for cable spinning machine
US3345812A (en) * 1966-11-23 1967-10-10 Gen Time Corp Strand break detector

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Publication number Publication date
BE472338A (en))

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