CA1118751A - Automatic fish tape - Google Patents
Automatic fish tapeInfo
- Publication number
- CA1118751A CA1118751A CA000351953A CA351953A CA1118751A CA 1118751 A CA1118751 A CA 1118751A CA 000351953 A CA000351953 A CA 000351953A CA 351953 A CA351953 A CA 351953A CA 1118751 A CA1118751 A CA 1118751A
- Authority
- CA
- Canada
- Prior art keywords
- fish tape
- assembly according
- conduit
- source
- power
- 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
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
- B65H51/00—Forwarding filamentary material
- B65H51/02—Rotary devices, e.g. with helical forwarding surfaces
- B65H51/04—Rollers, pulleys, capstans, or intermeshing rotary elements
- B65H51/08—Rollers, pulleys, capstans, or intermeshing rotary elements arranged to operate in groups or in co-operation with other elements
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
- B25B—TOOLS OR BENCH DEVICES NOT OTHERWISE PROVIDED FOR, FOR FASTENING, CONNECTING, DISENGAGING OR HOLDING
- B25B25/00—Implements for fastening, connecting or tensioning of wire or strip
-
- 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
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Processing Of Meat And Fish (AREA)
Abstract
"AUTOMATIC FISH TAPE"
ABSTRACT OF THE DISCLOSURE
A portable electrically powered device pushes a fish tape through an electrical conduit. Conductors are then attach-ed to the fish tape which are then drawn back through the con-duit as the fish tape is withdrawn.
ABSTRACT OF THE DISCLOSURE
A portable electrically powered device pushes a fish tape through an electrical conduit. Conductors are then attach-ed to the fish tape which are then drawn back through the con-duit as the fish tape is withdrawn.
Description
75~
"AUTOMATIC FISH TAPE"
BACKGROUND OF THE INVENTION
This invention relates to new and useful improve-ments in automatic fish tapes and comprises a portable elec-trically powered machine designed specifically for use in the electrical construction trade.
Conduit systems in buildings are often relatively long and the conductors required are large and numerous.
Present methods of pulling the conductors through the conduits include pushing a fish tape through the conduit manually whereupon the desired conductors are attached to the distal end and the fish tape is then pulled back through the conduit manually.
; Alternatively, a blast of compressed air may be usedto push a spool of nylon string through the conduit. Once the string is through, a fish tape rope or cable is attached to the string and then pulled back through the conduit. Conductors may now be attached to the fish tape or the like and then may be drawn through the conduit manually.
A third method includes using a vacuum system to suck a foam rubber ball with a string attached, through the conduit whereupon a fish tape rope or cable may be attached to the string and pulled back through the conduit. Conductors may then be attached to the fish tape or the like and can be drawn manu-ally through the conduit.
When conduit systems are quite long and the conductors .
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required, are relatively large or numerous, it becomes neces-sary to use a block and tackle winch system to eliminate manual labour. Such methods require considerable setup time as well as an operator at either end of the conduit system.
For example it will take at least one operator to feed the con-ductors into the conduit as well as a further operator to oper-ate the equipment being used. ~nasmuch as the two ends of the conduit can be in separate rooms or several hundreds of Eeet apart, communication between the two parties usually is a pro-blem as precise coordination between "pull" and "feed" ends is important. This is because it is necessary for a periodic stopping of the conductors as large conductors have to be lubri-cated along the pull to allow for ease of movement through the conduit in order to prevent damage to the conductor insulation due to friction within the conduit.
SUMI~ARY OF THE INVENTION
The present invention overcomes these disadvantages by providing a system which pushes a steel fish tape through an electrical conduit, permits conductors to be attached to the fish tape which is then drawn back through the conduit.
One of the advantages of the present device is that it can be operated by one operator using the device, the operator being situated at the end of the conduit system where the con-ductors are being fed into the system. By means of a remote foot operated switch the operator is in full control of the ma~
chine and he may, at his discretion, start and stop the machine 375~
to suit his ability to feed the conductors into the condui-t system.
An aspect of the invention consists of a push-pull assembly for fish tape moveme:nt selectively shiftable from a "push" mode to a "pull" mode and vice versa, for pulling con-ductors through an associated conduit; comprising in combina-tion a supporting framework, a reversible source of power in said framework, a fish tape reel mounted for rotation adjacent one end of said framework, a length of flexible fish tape on said reel, push-pull drive means for said fish tape, said fish tape operatively engaging with said drive means, and means in said framework connectable to said fish tape reel and to said drive means for rotating said reel when said assembly is in the "pull" mode and being disconnectable from said fish tape reel when said assembly is in the "push" mode.
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Another advantage of the present invention is the provision of a completely portable machine which is easily wheeled into position adjacent the one end of the conduit and which can be readily attached thereto.
A further advantage of the invention is to provide a device of the character herewithin described which is simple in construction, economical in manufacture and otherwise well suited for the purpose for which it is designed.
With the foregoing in view, and other advantages as will become apparent to those skilled in the art to which this invention relates as this specification proceeds, the invention is herein described by reference to the accompanying drawings forming a part hereof, which includes a description of the pre-ferred typical embodiment of the principles of the present in-vention, in which:
DESCRIPTION OF THE DRAWINGS
Figure 1 is a schematic side elevation of the device showing same in the "push" position.
Figure 2 is a view similar to Figure 1 but showing the machine in the "pull" position.
Figure 3 is an isometric view of the supporting frame-work with the drive train removed for clarity.
Figure 4 is an isometric view of the drive chain as-sembly per se.
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Figure 5 is a side elevation of the machine per se.
Figure 6 is an enlarged fragmentary end elevation of the clutch assembly.
Figure 7 is an enlarged cross sectional side eleva-tion of the connection extending between one end of the machine and the conduit through which conductors are to be pulled.
In the drawings like characters of reference indicate corresponding parts in the different figures.
GENER~L DESCRIPTION
In general, the system includes a push-pull assembly collectively designated 10, a length of flexible connection collectively designated 11 connected to one end of the machine, a substantially rigid header pipe or conduit collectively de-signated 1~, an automatic shutoff-switch assembly collectively designated 13 and a vibrator unit collectively designated 1 which may be provided if desired.
In detail the assembly 10 includes a supporting frame collectively designated 15 and shown in detail in Figure 3.
This frame includes a pair of longitudinally extending spaced apart frame members 16, cross members 17, shaft support plates 18 one upon each side thereof adjacent the front end 19 of the framework, and vertical supporting posts or members 20 within which is supported a source of power 21 taking the form of a reversible electric motor which is preferably a gear reduction type motor.
87~l A fish tape drum shaft 22 is journalled transversely across members 16 adjacent the rear end 23 thereof, said shaft 22 being journalled for rotation within pillow block type of bearings 24 clearly illustrated in Figure 3.
A fish tape drum 25 is secured to shaft 22 for rota-tion therewith and is adapted to receive thereon, a length of flexible steel fish tape 26 which is preferably rectangular in cross section. The amount of fish tape carried by the drum 25 is of course a matter of choice but in the preferred embodiment, the drum is of a sufficient size to contain approximately 300 feet of 1/4 inch wide steel fish tape.
A drive sprocke~ 27 is also secured to shaft 22 or may be secured to one side of the drum 25 and a drive chain 28 extends around this sprocket and selectively driven thereby as will hereinafter be described.
A main drive shaft 29 is journalled for rotation with-in bearings 30 secured to the front sides of the front pair of vertical supports 20, said shaft being parallel with shaft 22 and having a sprocket 31 secured to one end thereof. A drive chain 32 extends around this sprocket and around a drive sproc-ket 33 secured to the shaft of the electric motor 21.
What is termed a "push" sprocket 34 is journalled for rotation upon shaft 29 and what is known as a "pull" sprocket 35 is also journalled for rotation upon shaft 29 with sprocket chain 28 engaging around sprocket 35 as shown in Figure 4.
Two pairs of fish tape drive wheels are provided, a 3L11~375~
rear pair collectively designated 36 and a front pair collec-tively designated 37, the front pair being spaced forwardly of the rear pair as clearly shown in Figure 4. Stationary shafts 38 and 39 are secured transversely to the upper sides of the longitudinal frame members 16 forwardly of the vertical supports 20 and the upper drive wheels specifically designated 36A and 37A are journalled for rotation upon these shafts.
Further stationary shafts 40 and 41 are secured be-tween the side plates 18 and the lower drive wheels specifical-ly designated 36B and 37B are mounted upon these shafts 40 and 41 respectively with the drive wheel 36A being immediately above and in contact with the drive wheel 36B and the drive wheel 37A being immediately above and in contact with the drive wheel 37B .
These drive wheels are provided with resilient peripheries 42 perferably rubber or some similar synthetic plastic so that the steel tape 26 which passes therebetween as clearly shown in Figure 4 is squeezed by these two pairs of drive wheels so that movement is imparted thereto.
A drive chain 43 extends around the sprocket 34 and is threaded around sprockets 44A and 44B and around 45A and 45B .
Sprocket 44A iS secured to one side of the drive wheel 36A and sprocket chain 43 engages the forward side of the sprocket. The chain then passes around the far side of sprocket 44B which is secured to drive wheel 36B and then around ' 75~
the front side of sprocket 45B which is secured to drive wheel37B. It then passes around the rear side of sprocket 45A
which is secured to drive wheel 37A all of which is shown clear-ly in Figure 4.
Means are provided to selectively connect sprocket gears 34 and 35 to the drive shaft 29, one example of said means being shown in detail in Figure 6. This takes the form of a clutch selective sleeve 46 splined to shaft 29 by means of spline 47 so that it may be moved endwise with shaft 29 but will always rotate therewith. Means are provided to move the clutch selector 46 either to the position shown in Figure 6 whereupon one ratchet end 48 engages with a corresponding ratchet end 49 on the sprocket shoulder 50 of the sprocket 34 or, alternative-ly, to end shift it to the right so that the other ratchet end 51 engages with the ratchet end 52 formed on the shoulder 53 of the other sprocket wheel 35. In this embodiment, reversing the motor moves the selector from one position to the other due to the ramping effect of the ratchet ends of the selector and corresponding ratchet ends on the sprocket shoulders 50 and 53.
When in the position illustrated in Figure 6, with the electric motor 21 revolving in the direction of arrow 54' (see Figure 1), the drive wheels are rotated in the direction of arrows 55' thus pulling the tape 26 from the free wheeling reel 25 and pushing it in the direction of arrow 56'.
When in the opposite position namely with the end 51 ~ . ~
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of the clutch sleeve engaged with the end 52 oE the sprocket 35, and with the electric moto:r rotating in the direction of arrow 57', the aforementioned drive chain 28 now is connected to drive the sprocket 27 and hence the drum 25 in the direction of arrow 58', the drive wheels now idling and rotating in the direction of arrow 59l shown in Figure 2.
In other words the position of the sleeve 46 in Figure 6 is such that the assembly is in the "push" position as shown in Figure 1 and with the sleeve 46 in the opposite posi-tion, the assembly is in the "pull" position as shown schema-tically in Figure 2.
A cross member 54 spans the front vertical supports 55 of the supporting framework and carries a guide tube 56 thereon through which the fish tape extends and this guide tube is screw threaded as shown in Figure 7 and held in position by means of lock nut 57.
A screw threaded ferrule 58" is used to detachably connect one end 58 of a flexible connection collectively desig-nated 59, to the distal end of the guide tube 56 as clearly shown in Figure 7. This flexible conduit or connection is pre-ferably a length of hydraulic hose which incorporates a coil spring 60 therein and which also includes a further screw threaded connector 61 at the other end thereof connectable by means of screw threaded ferrule 62, and reducer bushing 62A to one end of a:n adaptor unit 63 (see Figure 7).
This adaptor unit is provided with an internal screw ~ ;. . ~., :- . ~ :
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threaded opposite end 64 adapted to receive any one of a plur-ality of screw threaded adaptor ferrules 65 in order to connect thereto, a substantially rigid header pipe collectively desig-nated 12. The diameter and length of the header pipe is de-pendent upon the associated conduit 66 through which it is de-sired to pull conductors and the adaptor portions 65 are used to suit the diameter of the header pipe. The header pipe is connected to a screw threaded outlet 67 within the electrical panel 68 to which the conduit 66 is secured, ferrule 69 being used to detachably secure the header pipe as clearly shown in Figure 7.
Reference to Figures 1 and 2 will show that the as-sociated conduit 66 extends from the electrical box 68 to a further electrical panel or box 70 at the distal end of the conduit and that several'ends 71 may of course be incorporated within this associated conduit through which the conductors 72 are to be pulled.
Before describing the operation of the device, refer-ence should again be made to Figure 7, A conventional vibrator unit 14 is secured adjacent ferrule 62 and consists of a casing 72A with a vibrating coil 73 therein operatively connected to a source of electrical energy through conductors 74, This reci-procates the vibrating producing plunger 75 which extends through an aperture within the ferrule 62 with the inner end 76 engaging ag,ainst one side of the fish tape 26 as clearly shown, This imparts vibration to the fish tape as it is being moved and facilitates the movement thereof through the associated con-, .
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duit 66, in the pushing of the tape through the conduits as will hereinafter be described.
Also shown in Figure 7 is an automatic shutoff-switch assembly 13 which includes a casing 77 secured to the adaptor 63 by means of screw 78 or the like.
This includes a single pole double throw switch as-sembly 79 actuated by a projecting screw or the like 80 secur-ed to a sleeve 81 reciprocal within the adaptor 63 and through which the fish tape 26 extends. This sleeve is flanged at the outer end 82 thereof with a compression spring 83 reacting be-tween the flange and the inner surface 84 of the adaptor so that it is normally maintained in the position shown in Figure 7 with the shutoff-switch 13 inoperative.
This switch is operatively connected via conductors 85, to the electric motor 21 and the flange 82 is engaged by the distal end 86 of the fish tape when the ends of conductors 72 are secured thereto, the diameter of the connection being larger than the internal diameter of the sleeve 81. This moves the sleeve in the direction of arrow 87 so that the projecting screw 80 actuates the switch 79 via roller 88 and lever 89 thus shutting off the source of power automatically.
Finally reference should be made to Figures 1 and 2 which show schematically, a remote operated control assembly 90 which is operatively connected via flexible conductors 91, to the motor 21, It is a conventional device which includes a push-pull selector switch 92 for selecting the direction of ro-~ : :. , : .
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tation of the motor 21 and the position of the clutch sleeve 46 and hence whether the assembly is in the "push" mode or the "pull" mode. It also includes an on off switch portion 93 which is preferably foot operated by the operator who is situat-ed at the entrance end of the conductors, namely, at the elec-trical box 70.
In operation, the assembly, which is mounted on ground engaging wheels 94 and may be manipulated by means of handles 95A at the rear end of the frame, is positioned adja-cent the electrical box 68 and the flexible connection or con-duit 11 is screw threadably engaged to the guide tube 56 by means of ferrule 58. is The adaptor 63/connected by means of ferrule 62 to the flexible connection 59. The header pipe or conduit 12 is connected together with the necessary adaptor ferrule 65 and screw threadably engaged within the end 64 of the adaptor 63.
The rigid header 12 is then connected to the one end of the associated conduit 66 by means of ferrule 69 as clearly shown in Figure 7.
The motor 21 is connected to a source of power and the remote control switch assembly 90 is extended from a con-trol relay box 94 to the other end of the associated conduit 66, namely, at the electrical panel or pull box 70 which of course may be a considerable distance away from the box 68.
The "push" mode is selected by means of the selector 92 thus enga~ing the clutch sleeve 46 in the position shown in 75~L
Figure 6 and also causing the motor 21 to rotate in the di-rection of arrow 54A as illustrated schematically in Figure 1.
This causes the two pairs of drive wheels 36 and 37 to rotate in the direction of arrows 55A thus pulling the fish tape 26 from the reel 25 which is in a free wheeling mode at this point.
The fish tape is pushed through -the guide tube 56, through the flexible conduit 11, through the header pipe 12 and into the associated conduit 66 with the vibrator 14 assisting in the movement of the fish tape through the conduit 66. The opera-tor, controlling the machine by means of the foot switch 93, waits until the distal end 95 of the fish tape, extends from the electrical panel or pull box 70 whereupon the motor 21 is stopped by releasing the foot switch 93.
The ends 72 of the conductors to be pulled, are at-tached to the fish tape as shown by reference character 86 and which is conventional whereupon the push-pull selector 92 is actuated to shift the machine into the "pull" position by moving the sleeve 46 to the opposite position to that shown in Figure 6 and reversing the direction of motor 21.
This connects the motor to the fish tape drum via sprocket 35 and sprocket chain 28 and the motor rotates the fish tape drum in the take up direction indicated by arrow 58A in Figure 2 with the drive wheels idling in this position.
This is the "pull" mode.
The fish tape is wound upon the drum pulling the con-ductors 72, through the associated conduit 66 until the end or ~A~
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connection 86 of the fish tape strikes the flange 82 of the sleeve 81 and moves it in the direction of arrow 87 thus actua-ting the shutoff-switch and automatically stopping the motor 21 at which time the operator situated at the far end, knows that the conductors have been pulled clear through the asso-ciated conduit 66.
In this connection, the stress of the pull is con-tained against the walls of the flexible connection 11 and directly onto the conduit system thereby eliminating all strain on conduit clips or hangers. It also eliminates problems in-herent with block and tackle or winch methods inasmuch as they must be securely attached to the building structure. Because the assembly of the present invention is coupled directly to the conduit system, this eliminates the necessity for any at-tachment to the building structure thus eliminating costly de-lays and set up times.
Once the motor 21 has been switched off by the shut-off-switch 13, the header pipe 12 may be uncoupled from the conduit 66 by releasing ferrules 69. The operator then resets the machine to the "push" position and depresses the foot switch which has been moved to the other end of the conduit thus in effect pushing the header pipe from the ends of the conductors so that when they are cleared from the header pipe, and are sufficiently exposed, the machine may be shutoff by the foot switch 93, the conductors detached from the fish tape and terminated in the usual way.
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The "pull" operation is electrically interlocked through a normally closed contact of the shutofE-switch there-fore, the machine will not operate unless the shu-toff-switch is operational. This prevents any unnecessary strain on the components should the shutoff-switch malfunction in anyway.
If desired, a footaqe counter (not illustrated) may be provided which will register the exac-t footage of the con-duit system. This gives the operator the exact length of the conduit system for ascertaining the approximate length of con-ductors required.
Although design parameters can be changed, the pre-sent deviee can be used on conduit systems varying in size from 1/2 inch to 2 ineh eleetrical trade size and up to a maximum of 285 feet in length.
Finally, the ground engaging wheels 94 are mounted adjaeent the front end of the frame upon an axle 96 mounted ad-jaeent the base of the side plates 18. Under these connections a folding stabilizing leg 97 is preferably provided at the rear end of the supporting framework 15.
Since various modifications can be made in my inven-tion as hereinabove described, and many apparently widely dif-ferent embodiments of same made within the spirit and scope of the elaims without departing from such spirit and seope, it is intended that all matter contained in the accompanying speci-fieation shall be interpreted as illustrative only and not in a limiting sense.
: :~
"AUTOMATIC FISH TAPE"
BACKGROUND OF THE INVENTION
This invention relates to new and useful improve-ments in automatic fish tapes and comprises a portable elec-trically powered machine designed specifically for use in the electrical construction trade.
Conduit systems in buildings are often relatively long and the conductors required are large and numerous.
Present methods of pulling the conductors through the conduits include pushing a fish tape through the conduit manually whereupon the desired conductors are attached to the distal end and the fish tape is then pulled back through the conduit manually.
; Alternatively, a blast of compressed air may be usedto push a spool of nylon string through the conduit. Once the string is through, a fish tape rope or cable is attached to the string and then pulled back through the conduit. Conductors may now be attached to the fish tape or the like and then may be drawn through the conduit manually.
A third method includes using a vacuum system to suck a foam rubber ball with a string attached, through the conduit whereupon a fish tape rope or cable may be attached to the string and pulled back through the conduit. Conductors may then be attached to the fish tape or the like and can be drawn manu-ally through the conduit.
When conduit systems are quite long and the conductors .
, :
.: . .
:, s~
required, are relatively large or numerous, it becomes neces-sary to use a block and tackle winch system to eliminate manual labour. Such methods require considerable setup time as well as an operator at either end of the conduit system.
For example it will take at least one operator to feed the con-ductors into the conduit as well as a further operator to oper-ate the equipment being used. ~nasmuch as the two ends of the conduit can be in separate rooms or several hundreds of Eeet apart, communication between the two parties usually is a pro-blem as precise coordination between "pull" and "feed" ends is important. This is because it is necessary for a periodic stopping of the conductors as large conductors have to be lubri-cated along the pull to allow for ease of movement through the conduit in order to prevent damage to the conductor insulation due to friction within the conduit.
SUMI~ARY OF THE INVENTION
The present invention overcomes these disadvantages by providing a system which pushes a steel fish tape through an electrical conduit, permits conductors to be attached to the fish tape which is then drawn back through the conduit.
One of the advantages of the present device is that it can be operated by one operator using the device, the operator being situated at the end of the conduit system where the con-ductors are being fed into the system. By means of a remote foot operated switch the operator is in full control of the ma~
chine and he may, at his discretion, start and stop the machine 375~
to suit his ability to feed the conductors into the condui-t system.
An aspect of the invention consists of a push-pull assembly for fish tape moveme:nt selectively shiftable from a "push" mode to a "pull" mode and vice versa, for pulling con-ductors through an associated conduit; comprising in combina-tion a supporting framework, a reversible source of power in said framework, a fish tape reel mounted for rotation adjacent one end of said framework, a length of flexible fish tape on said reel, push-pull drive means for said fish tape, said fish tape operatively engaging with said drive means, and means in said framework connectable to said fish tape reel and to said drive means for rotating said reel when said assembly is in the "pull" mode and being disconnectable from said fish tape reel when said assembly is in the "push" mode.
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Another advantage of the present invention is the provision of a completely portable machine which is easily wheeled into position adjacent the one end of the conduit and which can be readily attached thereto.
A further advantage of the invention is to provide a device of the character herewithin described which is simple in construction, economical in manufacture and otherwise well suited for the purpose for which it is designed.
With the foregoing in view, and other advantages as will become apparent to those skilled in the art to which this invention relates as this specification proceeds, the invention is herein described by reference to the accompanying drawings forming a part hereof, which includes a description of the pre-ferred typical embodiment of the principles of the present in-vention, in which:
DESCRIPTION OF THE DRAWINGS
Figure 1 is a schematic side elevation of the device showing same in the "push" position.
Figure 2 is a view similar to Figure 1 but showing the machine in the "pull" position.
Figure 3 is an isometric view of the supporting frame-work with the drive train removed for clarity.
Figure 4 is an isometric view of the drive chain as-sembly per se.
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Figure 5 is a side elevation of the machine per se.
Figure 6 is an enlarged fragmentary end elevation of the clutch assembly.
Figure 7 is an enlarged cross sectional side eleva-tion of the connection extending between one end of the machine and the conduit through which conductors are to be pulled.
In the drawings like characters of reference indicate corresponding parts in the different figures.
GENER~L DESCRIPTION
In general, the system includes a push-pull assembly collectively designated 10, a length of flexible connection collectively designated 11 connected to one end of the machine, a substantially rigid header pipe or conduit collectively de-signated 1~, an automatic shutoff-switch assembly collectively designated 13 and a vibrator unit collectively designated 1 which may be provided if desired.
In detail the assembly 10 includes a supporting frame collectively designated 15 and shown in detail in Figure 3.
This frame includes a pair of longitudinally extending spaced apart frame members 16, cross members 17, shaft support plates 18 one upon each side thereof adjacent the front end 19 of the framework, and vertical supporting posts or members 20 within which is supported a source of power 21 taking the form of a reversible electric motor which is preferably a gear reduction type motor.
87~l A fish tape drum shaft 22 is journalled transversely across members 16 adjacent the rear end 23 thereof, said shaft 22 being journalled for rotation within pillow block type of bearings 24 clearly illustrated in Figure 3.
A fish tape drum 25 is secured to shaft 22 for rota-tion therewith and is adapted to receive thereon, a length of flexible steel fish tape 26 which is preferably rectangular in cross section. The amount of fish tape carried by the drum 25 is of course a matter of choice but in the preferred embodiment, the drum is of a sufficient size to contain approximately 300 feet of 1/4 inch wide steel fish tape.
A drive sprocke~ 27 is also secured to shaft 22 or may be secured to one side of the drum 25 and a drive chain 28 extends around this sprocket and selectively driven thereby as will hereinafter be described.
A main drive shaft 29 is journalled for rotation with-in bearings 30 secured to the front sides of the front pair of vertical supports 20, said shaft being parallel with shaft 22 and having a sprocket 31 secured to one end thereof. A drive chain 32 extends around this sprocket and around a drive sproc-ket 33 secured to the shaft of the electric motor 21.
What is termed a "push" sprocket 34 is journalled for rotation upon shaft 29 and what is known as a "pull" sprocket 35 is also journalled for rotation upon shaft 29 with sprocket chain 28 engaging around sprocket 35 as shown in Figure 4.
Two pairs of fish tape drive wheels are provided, a 3L11~375~
rear pair collectively designated 36 and a front pair collec-tively designated 37, the front pair being spaced forwardly of the rear pair as clearly shown in Figure 4. Stationary shafts 38 and 39 are secured transversely to the upper sides of the longitudinal frame members 16 forwardly of the vertical supports 20 and the upper drive wheels specifically designated 36A and 37A are journalled for rotation upon these shafts.
Further stationary shafts 40 and 41 are secured be-tween the side plates 18 and the lower drive wheels specifical-ly designated 36B and 37B are mounted upon these shafts 40 and 41 respectively with the drive wheel 36A being immediately above and in contact with the drive wheel 36B and the drive wheel 37A being immediately above and in contact with the drive wheel 37B .
These drive wheels are provided with resilient peripheries 42 perferably rubber or some similar synthetic plastic so that the steel tape 26 which passes therebetween as clearly shown in Figure 4 is squeezed by these two pairs of drive wheels so that movement is imparted thereto.
A drive chain 43 extends around the sprocket 34 and is threaded around sprockets 44A and 44B and around 45A and 45B .
Sprocket 44A iS secured to one side of the drive wheel 36A and sprocket chain 43 engages the forward side of the sprocket. The chain then passes around the far side of sprocket 44B which is secured to drive wheel 36B and then around ' 75~
the front side of sprocket 45B which is secured to drive wheel37B. It then passes around the rear side of sprocket 45A
which is secured to drive wheel 37A all of which is shown clear-ly in Figure 4.
Means are provided to selectively connect sprocket gears 34 and 35 to the drive shaft 29, one example of said means being shown in detail in Figure 6. This takes the form of a clutch selective sleeve 46 splined to shaft 29 by means of spline 47 so that it may be moved endwise with shaft 29 but will always rotate therewith. Means are provided to move the clutch selector 46 either to the position shown in Figure 6 whereupon one ratchet end 48 engages with a corresponding ratchet end 49 on the sprocket shoulder 50 of the sprocket 34 or, alternative-ly, to end shift it to the right so that the other ratchet end 51 engages with the ratchet end 52 formed on the shoulder 53 of the other sprocket wheel 35. In this embodiment, reversing the motor moves the selector from one position to the other due to the ramping effect of the ratchet ends of the selector and corresponding ratchet ends on the sprocket shoulders 50 and 53.
When in the position illustrated in Figure 6, with the electric motor 21 revolving in the direction of arrow 54' (see Figure 1), the drive wheels are rotated in the direction of arrows 55' thus pulling the tape 26 from the free wheeling reel 25 and pushing it in the direction of arrow 56'.
When in the opposite position namely with the end 51 ~ . ~
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of the clutch sleeve engaged with the end 52 oE the sprocket 35, and with the electric moto:r rotating in the direction of arrow 57', the aforementioned drive chain 28 now is connected to drive the sprocket 27 and hence the drum 25 in the direction of arrow 58', the drive wheels now idling and rotating in the direction of arrow 59l shown in Figure 2.
In other words the position of the sleeve 46 in Figure 6 is such that the assembly is in the "push" position as shown in Figure 1 and with the sleeve 46 in the opposite posi-tion, the assembly is in the "pull" position as shown schema-tically in Figure 2.
A cross member 54 spans the front vertical supports 55 of the supporting framework and carries a guide tube 56 thereon through which the fish tape extends and this guide tube is screw threaded as shown in Figure 7 and held in position by means of lock nut 57.
A screw threaded ferrule 58" is used to detachably connect one end 58 of a flexible connection collectively desig-nated 59, to the distal end of the guide tube 56 as clearly shown in Figure 7. This flexible conduit or connection is pre-ferably a length of hydraulic hose which incorporates a coil spring 60 therein and which also includes a further screw threaded connector 61 at the other end thereof connectable by means of screw threaded ferrule 62, and reducer bushing 62A to one end of a:n adaptor unit 63 (see Figure 7).
This adaptor unit is provided with an internal screw ~ ;. . ~., :- . ~ :
. ~ :
t75~
threaded opposite end 64 adapted to receive any one of a plur-ality of screw threaded adaptor ferrules 65 in order to connect thereto, a substantially rigid header pipe collectively desig-nated 12. The diameter and length of the header pipe is de-pendent upon the associated conduit 66 through which it is de-sired to pull conductors and the adaptor portions 65 are used to suit the diameter of the header pipe. The header pipe is connected to a screw threaded outlet 67 within the electrical panel 68 to which the conduit 66 is secured, ferrule 69 being used to detachably secure the header pipe as clearly shown in Figure 7.
Reference to Figures 1 and 2 will show that the as-sociated conduit 66 extends from the electrical box 68 to a further electrical panel or box 70 at the distal end of the conduit and that several'ends 71 may of course be incorporated within this associated conduit through which the conductors 72 are to be pulled.
Before describing the operation of the device, refer-ence should again be made to Figure 7, A conventional vibrator unit 14 is secured adjacent ferrule 62 and consists of a casing 72A with a vibrating coil 73 therein operatively connected to a source of electrical energy through conductors 74, This reci-procates the vibrating producing plunger 75 which extends through an aperture within the ferrule 62 with the inner end 76 engaging ag,ainst one side of the fish tape 26 as clearly shown, This imparts vibration to the fish tape as it is being moved and facilitates the movement thereof through the associated con-, .
375~
duit 66, in the pushing of the tape through the conduits as will hereinafter be described.
Also shown in Figure 7 is an automatic shutoff-switch assembly 13 which includes a casing 77 secured to the adaptor 63 by means of screw 78 or the like.
This includes a single pole double throw switch as-sembly 79 actuated by a projecting screw or the like 80 secur-ed to a sleeve 81 reciprocal within the adaptor 63 and through which the fish tape 26 extends. This sleeve is flanged at the outer end 82 thereof with a compression spring 83 reacting be-tween the flange and the inner surface 84 of the adaptor so that it is normally maintained in the position shown in Figure 7 with the shutoff-switch 13 inoperative.
This switch is operatively connected via conductors 85, to the electric motor 21 and the flange 82 is engaged by the distal end 86 of the fish tape when the ends of conductors 72 are secured thereto, the diameter of the connection being larger than the internal diameter of the sleeve 81. This moves the sleeve in the direction of arrow 87 so that the projecting screw 80 actuates the switch 79 via roller 88 and lever 89 thus shutting off the source of power automatically.
Finally reference should be made to Figures 1 and 2 which show schematically, a remote operated control assembly 90 which is operatively connected via flexible conductors 91, to the motor 21, It is a conventional device which includes a push-pull selector switch 92 for selecting the direction of ro-~ : :. , : .
:. ' ''' ~ ~ - , - ~ ~ -, " .: ~ :
. . ~. ~ .
- l~i87~
tation of the motor 21 and the position of the clutch sleeve 46 and hence whether the assembly is in the "push" mode or the "pull" mode. It also includes an on off switch portion 93 which is preferably foot operated by the operator who is situat-ed at the entrance end of the conductors, namely, at the elec-trical box 70.
In operation, the assembly, which is mounted on ground engaging wheels 94 and may be manipulated by means of handles 95A at the rear end of the frame, is positioned adja-cent the electrical box 68 and the flexible connection or con-duit 11 is screw threadably engaged to the guide tube 56 by means of ferrule 58. is The adaptor 63/connected by means of ferrule 62 to the flexible connection 59. The header pipe or conduit 12 is connected together with the necessary adaptor ferrule 65 and screw threadably engaged within the end 64 of the adaptor 63.
The rigid header 12 is then connected to the one end of the associated conduit 66 by means of ferrule 69 as clearly shown in Figure 7.
The motor 21 is connected to a source of power and the remote control switch assembly 90 is extended from a con-trol relay box 94 to the other end of the associated conduit 66, namely, at the electrical panel or pull box 70 which of course may be a considerable distance away from the box 68.
The "push" mode is selected by means of the selector 92 thus enga~ing the clutch sleeve 46 in the position shown in 75~L
Figure 6 and also causing the motor 21 to rotate in the di-rection of arrow 54A as illustrated schematically in Figure 1.
This causes the two pairs of drive wheels 36 and 37 to rotate in the direction of arrows 55A thus pulling the fish tape 26 from the reel 25 which is in a free wheeling mode at this point.
The fish tape is pushed through -the guide tube 56, through the flexible conduit 11, through the header pipe 12 and into the associated conduit 66 with the vibrator 14 assisting in the movement of the fish tape through the conduit 66. The opera-tor, controlling the machine by means of the foot switch 93, waits until the distal end 95 of the fish tape, extends from the electrical panel or pull box 70 whereupon the motor 21 is stopped by releasing the foot switch 93.
The ends 72 of the conductors to be pulled, are at-tached to the fish tape as shown by reference character 86 and which is conventional whereupon the push-pull selector 92 is actuated to shift the machine into the "pull" position by moving the sleeve 46 to the opposite position to that shown in Figure 6 and reversing the direction of motor 21.
This connects the motor to the fish tape drum via sprocket 35 and sprocket chain 28 and the motor rotates the fish tape drum in the take up direction indicated by arrow 58A in Figure 2 with the drive wheels idling in this position.
This is the "pull" mode.
The fish tape is wound upon the drum pulling the con-ductors 72, through the associated conduit 66 until the end or ~A~
.
~ . ..-: - ~
~ . ~
875~
connection 86 of the fish tape strikes the flange 82 of the sleeve 81 and moves it in the direction of arrow 87 thus actua-ting the shutoff-switch and automatically stopping the motor 21 at which time the operator situated at the far end, knows that the conductors have been pulled clear through the asso-ciated conduit 66.
In this connection, the stress of the pull is con-tained against the walls of the flexible connection 11 and directly onto the conduit system thereby eliminating all strain on conduit clips or hangers. It also eliminates problems in-herent with block and tackle or winch methods inasmuch as they must be securely attached to the building structure. Because the assembly of the present invention is coupled directly to the conduit system, this eliminates the necessity for any at-tachment to the building structure thus eliminating costly de-lays and set up times.
Once the motor 21 has been switched off by the shut-off-switch 13, the header pipe 12 may be uncoupled from the conduit 66 by releasing ferrules 69. The operator then resets the machine to the "push" position and depresses the foot switch which has been moved to the other end of the conduit thus in effect pushing the header pipe from the ends of the conductors so that when they are cleared from the header pipe, and are sufficiently exposed, the machine may be shutoff by the foot switch 93, the conductors detached from the fish tape and terminated in the usual way.
~B~S~L
The "pull" operation is electrically interlocked through a normally closed contact of the shutofE-switch there-fore, the machine will not operate unless the shu-toff-switch is operational. This prevents any unnecessary strain on the components should the shutoff-switch malfunction in anyway.
If desired, a footaqe counter (not illustrated) may be provided which will register the exac-t footage of the con-duit system. This gives the operator the exact length of the conduit system for ascertaining the approximate length of con-ductors required.
Although design parameters can be changed, the pre-sent deviee can be used on conduit systems varying in size from 1/2 inch to 2 ineh eleetrical trade size and up to a maximum of 285 feet in length.
Finally, the ground engaging wheels 94 are mounted adjaeent the front end of the frame upon an axle 96 mounted ad-jaeent the base of the side plates 18. Under these connections a folding stabilizing leg 97 is preferably provided at the rear end of the supporting framework 15.
Since various modifications can be made in my inven-tion as hereinabove described, and many apparently widely dif-ferent embodiments of same made within the spirit and scope of the elaims without departing from such spirit and seope, it is intended that all matter contained in the accompanying speci-fieation shall be interpreted as illustrative only and not in a limiting sense.
: :~
Claims
WHAT WE CLAIM AS OUR INVENTION.
(1) A push-pull assembly for fish tape movement selectively shiftable from a "push" mode to a "Pull" mode and vice versa, for pulling conductors through an associated con-duit; comprising in combination a supporting framework, a re-versible source of power in said framework, a fish tape reel mounted for rotation adjacent one end of said framework, a length of flexible fish tape on said reel, push-pull drive means for said fish tape, said fish tape operatively engaging with said drive means, and means in said framework connectable to said fish tape reel and to said drive means for rotating said reel when said assembly is in the "pull" mode and being disconnectable from said fish tape reel when said assembly is in the "push" mode.
(2) The assembly according to Claim 1 in which said push-pull drive means includes at least one pair of cooperat-ing drive wheels journalled for rotation in said framework, said fish tape operatively engaging therebetween and means se-lectively connectable to the source of power for rotating said drive wheels when said assembly is in the "push" mode.
(3) The assembly according to Claim 1 in which said means connectable to said fish tape reel includes a clutch as-sembly movable from a fish tape reel driving position to a fish tape reel non-driving position and vice versa.
(4) The assembly according to Claim 2 in which said means connectable to said fish tape reel includes a clutch as-sembly movable from a fish tape reel driving posititon to a fish tape reel non-driving position and vice versa.
(5) The assembly according to Claim 2 which in-cludes two pairs of cooperating drive wheels journalled for rotation in said framework, a drive chain operatively connect-ed to all of said drive wheels for rotating same when said assembly is in the "push" mode, with said fish tape passing between opposing wheels of each pair, a drive shaft for one of said wheels, said means selectively connectable to said source of power including a sliding clutch member on said drive shaft and rotatable therewith, means selectively engage-able by said clutch member to drive said drive wheels in one direction and being disconnected from said fish tape reel, when said assembly is in the "push" mode and further means selectively engageable by said clutch member to rotate said fish tape real and being disconnected from said drive wheels when said assembly is in the "pull" mode.
(6) The assembly according to Claim 1 which includes a guide tube in said framework for said fish tape, a flexible connection detachably secured by one end thereof to said guide tube and a rigid header conduit detachably secured by one end thereof to the other end of said flexible connection, said header conduit being detachably securable to one end of the associated conduit through which said conductors are to be pull-ed.
(7) The assembly according to Claim 2 which includes a guide tube in said framework for said fish tape, a flexible connection detachably secured by one end thereof to said guide tube and a rigid header conduit detachably secured by one end thereof to the other end of said flexible connection, said header conduit being detachably securable to one end of the associated conduit through which said conductors are to be pull-ed.
(8) The assembly according to Claim 3 which includes a guide tube in said framework for said fish tape, a flexible connection detachably secured by one end thereof to said guide tube and a rigid header conduit detachably secured by one end thereof to the other end of said flexible connection, said header conduit being detachably securable to one end of the associated conduit through which said conductors are to be pulled.
(9) The assembly according to Claim 4 which includes a guide tube in said framework for said fish tape, a flexible connection detachably secured by one end thereof to said guide tube and a rigid header conduit detachably secured by one end thereof to the other end of said flexible connection, said header conduit being detachably securable to one end of the associated conduit through which said conductors are to be pull-ed.
(10) The assembly according to Claim 5 which in-cludes a guide tube in said framework for said fish tape, a flexible connection detachably secured by one end thereof to said guide tube and a rigid header conduit detachably secured by one end thereof to the other end of said flexible connec-tion, said header conduit being detachably securable to one end of the associated conduit through which said conductors are to be pulled.
(11) The assembly according to Claim 6 which in-cludes a remotely situated electrical control means operative-ly connected to said source of power for stopping, starting and reversing said source of power.
(12) The assembly according to Claim 8 which in-cludes a remotely situated electrical control means operative-ly connected to said source of power for stopping, starting and reversing said source of power.
(13) The assembly according to Claim 8 which in-cludes a remotely situated electrical control means operative-ly connected to said source of power for stopping, starting and reversing said source of power.
(14) The assembly according to Claim 9 which in-cludes a remotely situated electrical control means operative-ly connected to said source of power for stopping, starting and reversing said source of power.
(15) The assembly according to Claim 10 which in-cludes a remotely situated electrical control means operative-ly connected to said source of power for stopping, starting and reversing said source of power.
(16) The assembly according to Claim 11 which in-cludes a shutoff-switch assembly in said header conduit oper-atively connected to said source of power and actuated by the distal end of said fish tape when in the "pull" mode, to dis-connect said source of power from said drive means.
(17) The assembly according to Claim 12 which in-cludes a shutoff-switch assembly in said header conduit oper-atively connected to said source of power and actuated by the distal end of said fish tape when in the "pull" mode, to dis-connect said source of power from said drive means.
(18) The assembly according to Claim 13 which in-cludes a shutoff-switch assembly in said header conduit oper-atively connected to said source of power and actuated by the distal end of said fish tape when in the "pull" mode, to dis-connect said source of power from said drive means.
(19) The assembly according to Claim 14 which in-cludes a shutoff-switch assembly in said header conduit oper-atively connected to said source of power and actuated by the distal end of said fish tape when in the "pull" mode, to dis-connect said source of power from said drive means.
(20) The assembly according to Claim 15 which in-cludes a shutoff-switch assembly in said header conduit oper-atively connected to said source of power and actuated by the distal end of said fish tape when in the "pull" mode, to dis-connect said source of power from said drive means.
(21) The assembly according to Claims 1, 2 or 3 which includes a fish tape vibrating assembly in said frame-work and operatively contacting said fish tape to impart vibra-tion to said fish tape to facilitate movement thereof through said associated conduit.
(22) The assembly according to Claims 4, 5 or 6 which includes a fish tape vibrating assembly in said frame-work and operatively contacting said fish tape to impart vibra-tion to said fish tape to facilitate movement thereof through said associated conduit.
(23) The assembly according to Claims 7, 8 or 9 which includes a fish tape vibrating assembly in said frame-work and operatively contacting said fish tape to impart vibra-tion to said fish tape to facilitate movement thereof through said associated conduit.
(24) The assembly according to Claims 10, 11 or 12 which includes a fish tape vibrating assembly connected to said header conduit and operatively contacting said fish tape pass-ing therethrough to impart vibration to said fish tape to faci-litate movement thereof through said associated conduit.
(25) The assembly according to Claims 13, 14 or 15 which includes a fish tape vibrating assembly connected to said header conduit and operatively contacting said fish tape pass-ing therethrough to impart vibration to said fish tape to faci-litate movement thereof through said associated conduit.
(26) The assembly according to Claims 16, 17 or 18 which includes a fish tape vibrating assembly connected to said header conduit and operatively contacting said fish tape pass-ing therethrough to impart vibration to said fish tape to faci-litate movement thereof through said associated conduit.
(27) The assembly according to Claims 19 or 20 which includes a fish tape vibrating assembly connected to said header cnduit and operatively contacting said fish tape passing there-through to impart vibration to said fish tape to facilitate movement thereof through said associated conduit.
(1) A push-pull assembly for fish tape movement selectively shiftable from a "push" mode to a "Pull" mode and vice versa, for pulling conductors through an associated con-duit; comprising in combination a supporting framework, a re-versible source of power in said framework, a fish tape reel mounted for rotation adjacent one end of said framework, a length of flexible fish tape on said reel, push-pull drive means for said fish tape, said fish tape operatively engaging with said drive means, and means in said framework connectable to said fish tape reel and to said drive means for rotating said reel when said assembly is in the "pull" mode and being disconnectable from said fish tape reel when said assembly is in the "push" mode.
(2) The assembly according to Claim 1 in which said push-pull drive means includes at least one pair of cooperat-ing drive wheels journalled for rotation in said framework, said fish tape operatively engaging therebetween and means se-lectively connectable to the source of power for rotating said drive wheels when said assembly is in the "push" mode.
(3) The assembly according to Claim 1 in which said means connectable to said fish tape reel includes a clutch as-sembly movable from a fish tape reel driving position to a fish tape reel non-driving position and vice versa.
(4) The assembly according to Claim 2 in which said means connectable to said fish tape reel includes a clutch as-sembly movable from a fish tape reel driving posititon to a fish tape reel non-driving position and vice versa.
(5) The assembly according to Claim 2 which in-cludes two pairs of cooperating drive wheels journalled for rotation in said framework, a drive chain operatively connect-ed to all of said drive wheels for rotating same when said assembly is in the "push" mode, with said fish tape passing between opposing wheels of each pair, a drive shaft for one of said wheels, said means selectively connectable to said source of power including a sliding clutch member on said drive shaft and rotatable therewith, means selectively engage-able by said clutch member to drive said drive wheels in one direction and being disconnected from said fish tape reel, when said assembly is in the "push" mode and further means selectively engageable by said clutch member to rotate said fish tape real and being disconnected from said drive wheels when said assembly is in the "pull" mode.
(6) The assembly according to Claim 1 which includes a guide tube in said framework for said fish tape, a flexible connection detachably secured by one end thereof to said guide tube and a rigid header conduit detachably secured by one end thereof to the other end of said flexible connection, said header conduit being detachably securable to one end of the associated conduit through which said conductors are to be pull-ed.
(7) The assembly according to Claim 2 which includes a guide tube in said framework for said fish tape, a flexible connection detachably secured by one end thereof to said guide tube and a rigid header conduit detachably secured by one end thereof to the other end of said flexible connection, said header conduit being detachably securable to one end of the associated conduit through which said conductors are to be pull-ed.
(8) The assembly according to Claim 3 which includes a guide tube in said framework for said fish tape, a flexible connection detachably secured by one end thereof to said guide tube and a rigid header conduit detachably secured by one end thereof to the other end of said flexible connection, said header conduit being detachably securable to one end of the associated conduit through which said conductors are to be pulled.
(9) The assembly according to Claim 4 which includes a guide tube in said framework for said fish tape, a flexible connection detachably secured by one end thereof to said guide tube and a rigid header conduit detachably secured by one end thereof to the other end of said flexible connection, said header conduit being detachably securable to one end of the associated conduit through which said conductors are to be pull-ed.
(10) The assembly according to Claim 5 which in-cludes a guide tube in said framework for said fish tape, a flexible connection detachably secured by one end thereof to said guide tube and a rigid header conduit detachably secured by one end thereof to the other end of said flexible connec-tion, said header conduit being detachably securable to one end of the associated conduit through which said conductors are to be pulled.
(11) The assembly according to Claim 6 which in-cludes a remotely situated electrical control means operative-ly connected to said source of power for stopping, starting and reversing said source of power.
(12) The assembly according to Claim 8 which in-cludes a remotely situated electrical control means operative-ly connected to said source of power for stopping, starting and reversing said source of power.
(13) The assembly according to Claim 8 which in-cludes a remotely situated electrical control means operative-ly connected to said source of power for stopping, starting and reversing said source of power.
(14) The assembly according to Claim 9 which in-cludes a remotely situated electrical control means operative-ly connected to said source of power for stopping, starting and reversing said source of power.
(15) The assembly according to Claim 10 which in-cludes a remotely situated electrical control means operative-ly connected to said source of power for stopping, starting and reversing said source of power.
(16) The assembly according to Claim 11 which in-cludes a shutoff-switch assembly in said header conduit oper-atively connected to said source of power and actuated by the distal end of said fish tape when in the "pull" mode, to dis-connect said source of power from said drive means.
(17) The assembly according to Claim 12 which in-cludes a shutoff-switch assembly in said header conduit oper-atively connected to said source of power and actuated by the distal end of said fish tape when in the "pull" mode, to dis-connect said source of power from said drive means.
(18) The assembly according to Claim 13 which in-cludes a shutoff-switch assembly in said header conduit oper-atively connected to said source of power and actuated by the distal end of said fish tape when in the "pull" mode, to dis-connect said source of power from said drive means.
(19) The assembly according to Claim 14 which in-cludes a shutoff-switch assembly in said header conduit oper-atively connected to said source of power and actuated by the distal end of said fish tape when in the "pull" mode, to dis-connect said source of power from said drive means.
(20) The assembly according to Claim 15 which in-cludes a shutoff-switch assembly in said header conduit oper-atively connected to said source of power and actuated by the distal end of said fish tape when in the "pull" mode, to dis-connect said source of power from said drive means.
(21) The assembly according to Claims 1, 2 or 3 which includes a fish tape vibrating assembly in said frame-work and operatively contacting said fish tape to impart vibra-tion to said fish tape to facilitate movement thereof through said associated conduit.
(22) The assembly according to Claims 4, 5 or 6 which includes a fish tape vibrating assembly in said frame-work and operatively contacting said fish tape to impart vibra-tion to said fish tape to facilitate movement thereof through said associated conduit.
(23) The assembly according to Claims 7, 8 or 9 which includes a fish tape vibrating assembly in said frame-work and operatively contacting said fish tape to impart vibra-tion to said fish tape to facilitate movement thereof through said associated conduit.
(24) The assembly according to Claims 10, 11 or 12 which includes a fish tape vibrating assembly connected to said header conduit and operatively contacting said fish tape pass-ing therethrough to impart vibration to said fish tape to faci-litate movement thereof through said associated conduit.
(25) The assembly according to Claims 13, 14 or 15 which includes a fish tape vibrating assembly connected to said header conduit and operatively contacting said fish tape pass-ing therethrough to impart vibration to said fish tape to faci-litate movement thereof through said associated conduit.
(26) The assembly according to Claims 16, 17 or 18 which includes a fish tape vibrating assembly connected to said header conduit and operatively contacting said fish tape pass-ing therethrough to impart vibration to said fish tape to faci-litate movement thereof through said associated conduit.
(27) The assembly according to Claims 19 or 20 which includes a fish tape vibrating assembly connected to said header cnduit and operatively contacting said fish tape passing there-through to impart vibration to said fish tape to facilitate movement thereof through said associated conduit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CA000351953A CA1118751A (en) | 1980-05-14 | 1980-05-14 | Automatic fish tape |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CA000351953A CA1118751A (en) | 1980-05-14 | 1980-05-14 | Automatic fish tape |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CA1118751A true CA1118751A (en) | 1982-02-23 |
Family
ID=4116944
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA000351953A Expired CA1118751A (en) | 1980-05-14 | 1980-05-14 | Automatic fish tape |
Country Status (1)
| Country | Link |
|---|---|
| CA (1) | CA1118751A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2537795A1 (en) * | 1982-12-13 | 1984-06-15 | Kohler Guy | Apparatus intended to pass a conductor in a duct previously placed in a building |
| WO1995011540A1 (en) * | 1993-10-19 | 1995-04-27 | Cae Di Carollo Albano & C. Snc | Threading device for filiform elements |
| CN113097930A (en) * | 2021-04-08 | 2021-07-09 | 汉维科技发展有限公司 | Cable pipe-penetrating auxiliary tool in multifunctional comprehensive wiring system and use method thereof |
| WO2022146439A1 (en) * | 2020-12-31 | 2022-07-07 | Kyle Edward Gordon | Automatic extending device |
-
1980
- 1980-05-14 CA CA000351953A patent/CA1118751A/en not_active Expired
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2537795A1 (en) * | 1982-12-13 | 1984-06-15 | Kohler Guy | Apparatus intended to pass a conductor in a duct previously placed in a building |
| WO1995011540A1 (en) * | 1993-10-19 | 1995-04-27 | Cae Di Carollo Albano & C. Snc | Threading device for filiform elements |
| WO2022146439A1 (en) * | 2020-12-31 | 2022-07-07 | Kyle Edward Gordon | Automatic extending device |
| CN113097930A (en) * | 2021-04-08 | 2021-07-09 | 汉维科技发展有限公司 | Cable pipe-penetrating auxiliary tool in multifunctional comprehensive wiring system and use method thereof |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| MKEX | Expiry |