Motorized cutting torch attachment
First Claim
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1. A cutting torch drive apparatus, comprising:
- a) a drive motor,b) a drive wheel mounted for rotation about its center upon a floating drive wheel mounting means,c) a means engaging said drive wheel to said drive motor, said engaging means providing frictional engagement of the drive wheel with the drive motor,d) a means powering said drive motor, ande) means mounting said apparatus to said cutting torch.
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Abstract
A cutting torch drive attachment which is easily attachable to an existing cutting torch providing a self contained battery powered motorized cutting torch drive attachment facilitating consistent torch speed and tip to work distance resulting in smooth straight line and circular metal cutting with improved torch gas usage efficiency.
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Citations
42 Claims
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1. A cutting torch drive apparatus, comprising:
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a) a drive motor, b) a drive wheel mounted for rotation about its center upon a floating drive wheel mounting means, c) a means engaging said drive wheel to said drive motor, said engaging means providing frictional engagement of the drive wheel with the drive motor, d) a means powering said drive motor, and e) means mounting said apparatus to said cutting torch. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31)
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32. A cutting torch drive apparatus for attachment upon a gas cutting torch with a cutting torch tip, a cutting torch neck and a gas valve lever, comprising:
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a) a battery powered drive motor with a single motor shaft, b) a power supply for powering said motor including a multiplicity of batteries, c) electrical circuitry controlling said motor and said motor power supply, said circuitry including a grounding on/off switch which is positioned to be activated by depressing the cutting torch gas lever, a high and low switch which in the low position provides power from less than all the batteries to the motor and when in the high position provides power from all the batteries to the drive motor, and a reverse and forward switch which switches the polarity of the electrical power to the drive motor facilitating motor direction change, d) a cylindrical body housing with a front and back end, said front body housing having a circular plate fixedly attached forming a body housing cavity for receiving said motor, batteries, and electrical circuitry, said circular plate further having a centrally located threaded aperture, said body cavity being further sealed with a circular back plate which is secured in place upon said housing back by screws extending from said body housing front through the body housing cavity to the body housing back plate, said cylindrical body housing further providing a user accessible mounting means for said high/low switch and said reverse/forward switch, said cylindrical body housing further providing a mounting means for mounting said drive apparatus upon a neck of said cutting torch, e) a cylindrical housing having front and back ends, the back end being male threaded for disposition upon the front plate centrally located threaded aperture, an extendable cylindrical housing having front and back ends, said extendable housing further having an internal diameter to receive said cylindrical housing front end upon said extendable housing back end, said extendable housing back end further having a compression nut disposed for compressingly securing said extendable housing upon said cylindrical housing back in a desired position, said cylindrical extendable housing front further having an enlarged area for internally receiving an extendable shaft bearing in addition to a shoulder area for pressingly receiving a drive wheel bracket, f) a drive motor shaft coupler having front and back ends, the back end fixedly receiving said motor shaft and the front end with a centrally disposed extendable shaft receiving area slidingly receiving an extendable shaft wherein said extendable shaft is also engagingly received by said coupler by the use of an extensible shaft key way which engages coupler key material disposed within said centrally disposed extendable shaft receiving area, said extendable shaft, drive motor shaft coupler, and extendable shaft being disposed within said cylindrical housing and said cylindrical extendable housing, said extendable shaft front end further extending beyond said extendable housing from said extendable shaft bearing providing a mounting shaft for an engagement wheel pressingly mounted upon said extendable shaft front, said engagement wheel having an engagement groove around its circumference said engagement groove being dimensioned as a V, g) said drive wheel bracket providing an aperture for mounting a drive wheel said aperture being positioned and said drive wheel and said engagement wheel dimensioned so that once the drive wheel is mounted said drive wheel supports the cutting torch tip a proper distance from the work metal and also provides a proper drive speed for the torch tip and work thickness, said drive wheel further having an engagement area around its circumference which engages with the engagement wheel engagement area, further providing a rotationally mounting means which is secured to said drive wheel bracket aperture said rotational mounting means further providing rotational movement of said drive wheel with a predetermined amount of slack between the drive wheel and drive wheel mounting means so that the drive wheel engagement area engages the engagement wheel engaging area when the drive wheel is urged toward the engagement wheel, h) a front mount mounted to said drive wheel bracket, said front mount having a cutting torch tip receiving aperture, said torch tip receiving aperture dimensioned to receive a cutting torch tip threaded area once the cutting torch tip has been removed from the cutting torch and said front bracket further being secured by installing the cutting torch tip upon the cutting torch, further providing a means for securing said front mount to drive wheel bracket, i) said cylindrical body housing mounting means for mounting said drive apparatus upon a neck of said cutting torch further comprising a multiplicity of mounting projections extending from said cylindrical body housing exterior, a non-electrical conducting mounting block, said mounting block having a cutting torch neck receiving aperture and further said mounting block being split forming top and bottom mounting block halves facilitating a clamping mounting means around said cutting torch neck, said top mounting block providing a means for mounting said on/off grounding switch and further positioning said on/off grounding switch to be contacted by said cutting torch gas valve lever. - View Dependent Claims (33, 34, 35, 36, 37, 38, 39, 40, 41, 42)
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Specification