Wellbore heat loop systems, fillers for bores in the systems, and methods of the use of such systems; the systems in certain aspects having a heat loop wellbore in the earth having heat loop pipe extending down to one side of a bottom member and up therefrom on another side thereof, the bottom member in certain aspects having a body with first and second bores therethrough, the second bore sized and configured for securement thereat of an end of coil tubing; and, in certain aspects, filler mater...

A method and apparatus for effective through-the-earth communication involves a signal input device connected to a transmitter operating at a predetermined frequency sufficiently low to effectively penetrate useful distances through-the earth, and having an analog to digital converter receiving the signal input and passing the signal input to a data compression circuit that is connected to an encoding processor, the encoding processor output being provided to a digital to analog converter. An am...

The invention relates to earth connections to workpieces particularly a workpiece to which an arc is to be struck, and more particularly to a workpiece that is underwater. It is of considerable importance that a workpiece is properly connected to earth, and that the impedance of the connection is not such as will elevate dangerously the voltage on the workpiece. The objective of the invention is to solve this problem, an objective met by an earth connection for workplaces that comprises a loop i...

The present reflector is an acrylic screen or curtain created for the purpose of illuminating designs and images by candlelight. The reflector is a free standing, thermo-molded, light-weight, acrylic form with decorative fabric affixed to the convex side of the form to be used in conjunction with a candle placed within the concave area of the form for illuminating the fabric images and softening the light from the candle. The concave side of the form, not covered with the fabric, reflects the li...

A junction for joining a first section of conduit to a second section of conduit is described. The junction has a body, which has a first connecting portion for connecting a respective first section of conduit to said body and has a second connecting portion for connecting a second respective section of conduit to said body. The body defines a volume extending between the first connecting portion and the second connecting portion. The junction also has a lid which is engagable with the body and ...

An earth leakage breaker includes a main contact, a switch mechanism, an operating handle, a leakage tripping device and an over-current tripping device having an earth-leakage-detection circuit disposed in a main-body case. A power-supply line connects the earth-leakage-detection circuit to the main circuit for supplying voltage between phases of the main circuit as a power source of the earth-leakage-detection circuit. Further, a test switch is provided for turning on and off a power-supply ci...

An all-earth foundation trencher has a digger body (1) pivotal selectively on a track-laying chassis (7). The digger body has an earth-mover blade (16) that is manipulatable multi-directionally on a front end. A digger boom (19) has a base end that is pivotal vertically forward from an aft end of the digger body. A digger head (22) is manipulatable on a digger end of the digger boom for power-digging foundation trenches having desired widths and depths in all likely consistencies of earth that r...

A through-the-earth communication system that includes a digital signal input device; a transmitter operating at a predetermined frequency sufficiently low to effectively penetrate useful distances through-the earth; a data compression circuit that is connected to an encoding processor; an amplifier that receives encoded output from the encoding processor for amplifying the output and transmitting the data to an antenna; and a receiver with an antenna, a band pass filter, a decoding processor, a...

An earth boring apparatus for sinking shafts and removing shaft material from the shaft, the apparatus having at least two decks; hydraulic means for allowing movement of the decks relative to one another; releasable anchoring means associated with the decks for engaging walls of the shaft to secure the apparatus in a stationary position; whereby the releasable anchoring means of one of the decks engages the wall while the releasable anchoring means of the other deck is released from the wall to...

An educational globe assembly is provided comprising a globe and a base cradle for the globe configured to removably and rotatably support the globe. The base cradle comprises a great circle ring, and the great circle ring comprises at least one annular indicia surface that is capable of rotation in the plane of the great circle ring. Base cradles are separately provided. Methods of use of the educational globe assembly are also described.