US2602845A - Device for running in wires, etc., into tubular structures, in particular in concealed electrical installations - Google Patents

Device for running in wires, etc., into tubular structures, in particular in concealed electrical installations Download PDF

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Publication number
US2602845A
US2602845A US180362A US18036250A US2602845A US 2602845 A US2602845 A US 2602845A US 180362 A US180362 A US 180362A US 18036250 A US18036250 A US 18036250A US 2602845 A US2602845 A US 2602845A
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US
United States
Prior art keywords
tube
hand
grip
clamping
wires
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
US180362A
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English (en)
Inventor
Wolff Josef
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.)
A Brunschweiler & Co
Brunschweiler & Co A
Original Assignee
Brunschweiler & Co A
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
Application filed by Brunschweiler & Co A filed Critical Brunschweiler & Co A
Application granted granted Critical
Publication of US2602845A publication Critical patent/US2602845A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02G—INSTALLATION OF ELECTRIC CABLES OR LINES, OR OF COMBINED OPTICAL AND ELECTRIC CABLES OR LINES
    • H02G1/00—Methods or apparatus specially adapted for installing, maintaining, repairing or dismantling electric cables or lines
    • H02G1/06—Methods or apparatus specially adapted for installing, maintaining, repairing or dismantling electric cables or lines for laying cables, e.g. laying apparatus on vehicle
    • H02G1/08—Methods or apparatus specially adapted for installing, maintaining, repairing or dismantling electric cables or lines for laying cables, e.g. laying apparatus on vehicle through tubing or conduit, e.g. rod or draw wire for pushing or pulling
    • H02G1/085—Methods or apparatus specially adapted for installing, maintaining, repairing or dismantling electric cables or lines for laying cables, e.g. laying apparatus on vehicle through tubing or conduit, e.g. rod or draw wire for pushing or pulling using portable tools

Definitions

  • This diiiiculty is to be eliminated by the present invention. It relates to a device having a flexible rod insertable in the tube structure for the subsequent securing and drawing-in of the wires etc. and is characterized by comprising two tubes fitting into each other for longitudinal displacement the outer of which serving as a handgrip and by the inner of which the flexible rod is displaceable by said inner tube having secured to it a clamping device with at least one movable jaw, said movable jawv being in its turn in connection with a second hand-grip in such a manner that on displacing said inner tube by means of said second hand-grip in one direction said clamping jaw comes to bear against said flexible rod and moves it along, whereas on displacement in the other direction said clamping jaw releases said flexible shaft so that said inner tube carries out an idle return movement.
  • Fig. 1 shows a rst example of embodiment of the device in side elevation
  • Fig. 2 is a front view thereof
  • Fig. 3 is a partial longitudinal section thereof seen from the side
  • Fig. 4 shows an alternative example of embodimentof the device partially in longitudinal section seen from the side, Y
  • Fig. 5 is an elevation viewed in the direction of the arrow V in Fig. 4,
  • Fig. 6 illustrates a third example of embodiment of the device in longitudinal section
  • Fig. 7 shows the device according to a fourth example of embodiment in side elevation
  • Fig. 8 is a detail of Fig. '7 in longitudinal section
  • Fig. 9 shows a partial cross-section along line IX--IX in Fig. 8.
  • the device illustrated in Fig. 1 to 3 has two tubes I and 2 fitted in each other for longitudinal displacement the outer I of which serves as a hand-grip and by the inner 2 of which the flexible rod 3 is displaceable.
  • a tube-shaped extension 4 preferably adapted flexibly is provided, said extension being partly inserted into the tube structure into which subsequently the wires etc. are to be run in.
  • the inner tube 2 (termed hereinafter the first tube) projects to a certain extent out of said hand-grip, said inner tube being rigidly connected to two annular disks 5 secured tothe wall of said tube and arranged parallel to each other.
  • Said two disks form the supporting member for the two clamping jaws 6 extending into the interstice between the two annular rings and being pivotally mounted at their centre at two points of the annular rings 5 disposed opposite to each other by means of the pins 'I.
  • the pins' Veach extend through an oblong hole 8 (Fig. 3) of the clampingjaws.
  • One end of the ⁇ clamping jaws 6 takes the form of a saddle-shaped androughened clamping surface coacting with the flexible rod 3, whereas the other end of the clamping jaws is pivotally mounted on a pin I0 each between two essentially semi-circular carrying members 9.
  • the carrying members 9 are rigidly secured to one end vof a second tubular-shaped hand grip II (termed hereinafter the second tube) surrounding the flexible rod 3 concentrically and arranged in the same plane as the tubes I and 2.
  • the rst tube 2- and the second tube II define a gap arranged at one end of the second tube I I and being adapted to accommodate part of the flexible member or rod 3.
  • the jaws 6 project into said gap-
  • the outer tube I is provided with an opening I2 near its front end through which the flexible rod 3 can be securely held by means of a linger, by way of example by the thumb of the hand gripping the hand-grip I.
  • a ferrule I3 is slideably arranged on thetube I and is adjustable by means of a screw I 4 and has a projection I5 which can be brought to bear against a fixed point when working with the device.
  • the flexible rod 3 On using the device described first of all one end of the flexible rod 3 is pushed through the second hand-grip I I and through the inner tube 2 and is then inserted in the tube structure into which subsequently the wires, such as electric conductor wires, are to be run in.
  • the exible extension 4 on the tubular-shaped hand-grip I is also partly inserted in the tube structure. Then the tubular-shaped hand-grip I is gripped with one hand and held securely, whilst the other hand grips the .second hand-grip II and with the help of said second hand-grip pushes the tube 2 into the outer tube I serving as a hand-grip.
  • the clamping surface of the jaws are thereby disengaged from the flexible rod 3 and thus release it so that the inner tube 3 carries out an idle return movement.
  • the flexible rod 3 is with advantage held tight through the opening I2 of the outer tube I thus to prevent the rod 3-from sliding back until the clamping device has opened.
  • FIGs. 4 and 5 differs from the example of embodiment described above in-that the support parts 9 are adapted as complete rings to which a guiding sleeve IIil surrounding the tube 2 is rigidly secured.
  • This measure has the advantage that the second hand-grip I I is guided coaxially to the first hand-grip in an axial direction whereby a buckling of the flexible rod between the tube 2 and the hand-grip II is altogether eliminated.
  • the inner tube 2 is in rigid connection with the second hand-grip II by the tube 2 being completely passed through the longitudinal bore of this handgrip and by being anchored therein.
  • a housing I'I for the clamping device is rigidly secured to the inner tube 2.
  • A- clamping jaw 6 is pivotally arranged in the housing I'I and can coact with the flexible rod 3 throughan opening in the tube 2 by means of one of its ends adapted as a clamping surface.
  • a spring I8- engages the clamping jaw with one end and the hand-grip II with the other end and has the tendency at all times to bring the clampingl jawe into contact with the flexible rod 3-in ordento clamp said rod 3 between the clamping jaw and thewallof the tube 2.
  • a rearward extension I9 offthe clamping jaw 6 can be manipulated from without, asis shown in Fig. 6. Thus it is possible to pivot the against the action of the spring I8.
  • the method of operation of this device is similar to that described for the rst example.
  • the flexible rod 3 On pushing the inner tube 2 into the outer tube I serving as a hand-grip by means of the second hand-grip I I the flexible rod 3 is carried along by the clamping jaw 6, the clamping action first of all being initiated by the spring I8 and afterwards increased during the advancing of the hand-grip II by the jamming action due to the position of the clamping jaw 6 shown.
  • the second hand-grip I I is again withdrawn in the other direction, whilst the flexible rod 3 is held tightly through the opening I2 of the tube I not shown.
  • the clamping jaw 6 pivots against the action of the spring I8 in such a manner that the rod 3 is released so that the tube 2 can carry out an idle return movement.
  • the clamping jaw 6 can be released at every return movement of the handgrip I I by means of a finger of the hand gripping this hand-grip.
  • FIG. 1 The example of embodiment shown in Figs. 'I to 9 is an alternative execution of the embodiment just described.
  • the housing I1 serves as a support for two clamping jaws 6 located within said housing, said clamping jaws being pivotally mounted by means of the screws I0 in a plane lying in the longitudinal axis of the device.
  • the ends of the clamping jaws facing each other are again provided with saddleshaped and roughened clamping surfaces between which the flexible rod 3 can be clamped.
  • each clamping jaw 6 carries a projection I9'V formedby a screw projecting outwardly through an associated opening 20 of the lid Ila of the housing.
  • a rod-shaped spring I8 is held at its two ends in recesses of the clamping jaws i and has the tendency at all times to pivot said jaws into the position of maximum clamping action.
  • the method of use of thedescribed device is the same as with the example accordingto Fig. 6. If for any reason the clamping jaws 6 are to release the flexible rod 3, the jaws can be pivoted against the-action of the lspringlil'by displacing the lp'rojections I9 projecting. out of the housing y
  • the device according to the'present invention has the advantage that the running in ⁇ of the fiexible rod intoany tubular structure can-be carried out Without trouble and at'the same time eliminating any danger-'of damaging the rodby buckling etc.
  • a tool for moving a flexible Vmember through a conduit comprising in combination, a first tube; a second tube arranged in alignment to said first tube, said rst tube and said second tube defining a gap arranged at one end of said second tube and being adapted to accommodate part of the flexible member so that the same bridges said gap; a member rigidly connected to the end of said second tube adjoining said gap; a pair of jaws arranged oppositely lto each other and pivoted at the ends turned away from each other to said member, said jaws projecting into said gap so as to clamp the flexible member in position with respect to said second tube; and means for holding said jaws in clamping position when said second tube is moved longitudinally in one direction with respect to the conduit and for releasing said jaws from the clamping position when said second tube is moved longitudinally in the opposite direction with respect to the conduit.
  • said holding and releasing means comprising a ring-shaped member rigidly connected to said first tube and having two slots arranged on opposite sides thereof, and pins rigidly connected, respectively, to said jaws and engaging, respectively, said slots,
  • a tool as claimed in claim 2 said member rigidly connected to said second tube having an annular shape so as to enclose said ring-shaped member; and a sleeve rigidly connected to saidA JOSEF WOLFF.

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  • Surgical Instruments (AREA)
  • Mutual Connection Of Rods And Tubes (AREA)
US180362A 1949-08-26 1950-08-19 Device for running in wires, etc., into tubular structures, in particular in concealed electrical installations Expired - Lifetime US2602845A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CH2602845X 1949-08-26

Publications (1)

Publication Number Publication Date
US2602845A true US2602845A (en) 1952-07-08

Family

ID=4570464

Family Applications (1)

Application Number Title Priority Date Filing Date
US180362A Expired - Lifetime US2602845A (en) 1949-08-26 1950-08-19 Device for running in wires, etc., into tubular structures, in particular in concealed electrical installations

Country Status (3)

Country Link
US (1) US2602845A (de)
CH (2) CH279073A (de)
DE (1) DE855422C (de)

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1091645B (de) * 1957-07-06 1960-10-27 Akad Wissenschaften Ddr Geraet zum Einschieben einer biegsamen Stahldrahtspirale fuer ein Einfuehren von Draehten in elektrische Leitungsrohre
DE1111259B (de) * 1960-07-05 1961-07-20 Karl Goebel Geraet zum Durchziehen von Stahlbaendern durch Elektro-Isolierrohre
SE396515B (sv) * 1975-12-15 1977-09-19 Elversson Tord Erland Verktyg for forflyttning av en langstreckt bojlig fjeder genom ihaliga passager
SE8204296L (sv) * 1982-07-13 1984-01-14 Pax Electro Prod Ab Anordning for indragning av el-ledningar i installationsror
EP1976085A1 (de) * 2007-03-29 2008-10-01 Rex-Technologie Gmbh & Co. Kg Vorrichtung zum Einführen von einer Einziehfeder
EP1976087A1 (de) * 2007-03-29 2008-10-01 Rex-Technologie Gmbh & Co. Kg Vorrichtung zum Einführen von einer Einziehfeder
EP1976088A1 (de) * 2007-03-29 2008-10-01 Rex-Technologie Gmbh & Co. Kg Vorrichtung zum Einführen von einer Einziehfeder
EP1976086A1 (de) * 2007-03-29 2008-10-01 Rex-Technologie Gmbh & Co. Kg Vorrichtung zum Einführen von einer Einziehfeder

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1880431A (en) * 1930-08-15 1932-10-04 Goodyear Tire & Rubber Tool for forcing and drawing an element through conduits
US1959490A (en) * 1931-08-31 1934-05-22 Mistelski Theodor Wire pushing and pulling tool

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1880431A (en) * 1930-08-15 1932-10-04 Goodyear Tire & Rubber Tool for forcing and drawing an element through conduits
US1959490A (en) * 1931-08-31 1934-05-22 Mistelski Theodor Wire pushing and pulling tool

Also Published As

Publication number Publication date
CH279073A (de) 1951-11-15
DE855422C (de) 1952-11-13
CH288644A (de) 1953-01-31

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