Abstract: In order to guarantee that the floor space be kept to a minimum and nevertheless render a closed circuit system possible with a device for absorbing the heat of the earth, particularly for operating a heat pump which at the same time affords high, steady final temperatures of the medium to be heated, a probe with a tube body extending into the ground like a column is used. The end of the probe pointing to the ground is sealed, and in the interior thereof an inner tube is arranged, the diameter of which is smaller than the inside diameter of the tube body, so as to form a circulation jacket. The inner tube is provided at its bottom end with an overflow opening into the circulation jacket. It is advantageous to seal the tube body at its end that points to the ground by means of a removable piston. This enables the tube body to be inserted into the ground as a permanently implanted boring rod during a wash boring operation.

Abstract: A steam trap includes a housing having an inner chamber, a feed opening and a discharge opening disposed adjacent to one another and communicating with the inner chamber, and a control unit disposed in the chamber including at least one bimetallic plate, a locking member disposed at the low pressure end of the trap and secured to a valve spindle extending centrally through the bimetallic plate and having a cam mounted thereon for engagement with the bimetallic plate and a seat sleeve which defines a valve seat and an abutment for cooperative engagement with said locking member and bimetallic plate, respectively. The seat sleeve includes a feed bushing which, in cooperation with the valve spindle, defines a flow channel therebetween and the cam consists of a cap disposed over a free end of the feed bushing projecting above the bimetallic plate, on the latter of which the cap is supported.

Abstract: A spool of a spinning reel is retained on its shaft by latch means released by an axially shiftable push button. The reel shaft has an annular latch groove near its forward end and a spool supporting hub. The spool is suitably recessed to receive and retain a crosspiece and the axially shiftable push button. The crosspiece is made of elastomeric material formed with forward sloping faces and associated radial, inwardly directed lugs shaped to be retained in the latch groove. When the spool is inserted onto the shaft the lugs drop into the latch groove to releasably retain the spool on the shaft. To remove the spool, the push button is depressed causing ramp faces thereon to engage the sloped faces of the crosspiece and withdraw the lugs from the groove freeing the spool for removal over the end of the shaft.

Abstract: A metal sash-window has been slidably arranged in a wooden window-frame without the intermediary of a metal window-frame mounted in the wooden window-frame.

Abstract: An electrical plug includes a housing made of insulating material for receiving plug contacts, in particular, plug pins and coupling means for a feeder cable. The housing has a front face and a retractable spring-loaded release device received in the housing for movement between a retracted position, in which it is disposed substantially within the housing, and a withdrawn position, in which it projects outwardly from its front face. An actuation device is mounted on the housing for triggering movement of the spring-loaded device to said withdrawn position thereof by spring force, so that when the plug is received within a wall socket or a coupling having a mounting face opposing the front face thereof, the release device upon actuation will engage and push off from the mounting face to automatically effect or at least facilitate plug release.

Abstract: A method for increasing the bulk weight of silicon dioxide with a surface of at least 50m.sup.2 /g by means of sub-atmospheric pressure applied at a filter face, wherein the silicon dioxide is moved by means of a conveyor screw, whose longitudinal axis is arranged parallel with respect to the filter face and which preferably has a decreasing thread pitch in feeding direction. Furthermore, the invention relates to the use of the treated silicon dioxide as a filler material for polymeric masses, especially diorganopolysiloxane, which is storeable in the absence of water and when admixed with water at room temperature results in a hardened elastomer mass.

Abstract: A method for making an axially extendable and contractable bellows is provided for use in monolayer photographic lithographic cameras and enlargers. The method includes the initial step of passing a single web of synthetic resin sheet material past at least one die having die edges arranged in a predetermined pattern for producing a separable bellows blank having fold lines formed therein for forming of multiplicity of pleats. Then the bellows blank is die formed and following its separation from the web it is folded onto itself to produce a seam which is then bonded. Finally, the hollow body thus formed is compressed along its longitudinal axis and along the fold lines so as to produce a pleated bellows configuration.

Abstract: A device for wiping or removing stones, or the like, especially intended for a ditch digging machine, having at least one digging blade which is mounted on a horizontally disposed, rotatable shaft, includes a wiper endpiece mounted on the shaft, which is disposed parallel to and a short distance apart from the digging blade. This endpiece is mounted in a slip clutch-like manner on the shaft and is maintained in its normal position by engagement with a spring-loaded rocker arm.

Abstract: The invention provides an improved process for the manufacture of the insecticide diazinon. The process uses .beta.-isobutyrylaminocrotonic acid amide as starting material and, by reaction with sodium hydroxide solution or alcoholate and phosphorylation with diethylthiophosphoryl chloride, diazinon (0,0-diethyl-0-(2-isopropyl-4-methyl-6-pyrimidinyl)thiono -phosphate) is obtained directly in a high yield without isolating any intermediates.

Abstract: A check valve with a valve seat formed in the valve housing wherein two side-by-side locking members are pivotably mounted in the valve seat for movement between an open and closed position. The locking members have their pivoting edges mounted adjacent and parallel to each other in the housing and have bearing bushings formed along the adjacent edges which engage side-by-side shafts whose ends are engaged to the valve housing. A pair of locking springs each have their windings engaged to one of the shafts which are located between the bearing bushings. Each of said springs has a first shank portion which is rigidly supported by an abutment of the valve housing and a second shank portion which engages the locking member mounted on the same shaft of the corresponding spring to urge the same into a closed position relative to the valve seat.

Abstract: A control for a sanitary mixing valve, includes an electric motor drive for the mixing water-control member in the mixing valve and a temperature sensor for measuring the discharge temperature of the mixed water. The analog values obtained by the temperature sensor are digitally converted and are fed to an electronic control means provided for one or a plurality of such mixing valves. The control means compares these values with previously determined nominal values of one or a plurality of nominal value transmitters and controls the electric motor drive based upon the corresponding value differentials.

Abstract: A spray gun for applying granulated material onto a surface, preferably glass beads onto roadway markings, or the like, is characterized in that a bead spray gun with an ejection effect is coupled with a mechanical dosaging device in one structural unit. Preferably, the mechanical dosaging device is a roller bead sprayer and is mounted immediately in the housing of the air spray gun above an ejection air nozzle.

Abstract: The development of a compact non-electrical mains supply based photocopier is described in which a piezo-electric crystal generator or a battery operated capacitor discharge circuit EHT supply is employed for generating the high voltage for charging the photoreceptive paper.The EHT supply for charging the paper is additionally used to provide the source of power for the light source (typically one or more fluorescent gas discharge tubes).The photocopier incorporates all the facilities to charge and subsequently apply toner and fix the latter in place, with a light-proof housing.

Abstract: An improved frame for eyeglasses includes a pair of interconnected rims, each of which is configured to surround and support an eyeglass lens and at least one clasp superimposed over at least about 1/3 of the outer surface of one of the rims. The clasp is configured and dimensioned to correspond to the configuration and width of the portion of the outer surface of the rim over which it is superimposed. The clasp is also generally spaced above this portion of the rim outer surface to permit a portion of a user's garment to be inserted between the clasp and the rim. The clasp serves to releasably secure the eyeglass frame to a user's garment inserted between the rim and the clasp.

Abstract: A locking device for bracelets and necklaces having two ends, each provided with a chain link, includes a first plate and a second plate which are pivotably coupled together for movement about a common pivot axis between an opening and locking position. The plates each have an aperture formed therethrough aligned with the pivot axis through which one of the chain links may extend and the first plate has a hook-like end portion for receiving the other of the chain links. The second plate has an arcuate slot formed therein running in a concentric manner with respect to the pivot axis which defines an arched portion on an end portion of the second plate disposed distal to the pivot axis relative to another end portion thereof. The arched portion also runs concentrically with respect to the pivot axis and, in the locking position, is received through the other chain link received in the hook-like end portion of the first plate.

Abstract: An angle valve is provided which is mountable on the exterior of a container having a container valve disposed therein and which includes a valve housing composed of a container-side connecting member having a front face and a channel formed therein opening onto the front face for communication with the container and a loading-side connecting member disposed at an angle to the container-side connecting member, which has a channel formed therethrough and which is capable of communication with a loading line. The valve housing further includes an intermediate connecting member having a receiving chamber formed therein which establishes communication between the channels of the loading-side and the container-side connecting members, with the loading-side connecting member disposed to discharge into the receiving chamber tangentially relative to the container-side connecting member.

Abstract: To make solar energy competitive, as compared against other sources of energy, inexpensive solar cells are required. To accomplish this goal, a method is provided which enables one to produce silicon rods having a columnar structure made of monocrystalline zones with preferential crystallographic orientation. This is effected by feeding a silicon melt into a crystallization chamber having a vertically movable cooled bottom face under the influence of a temperature gradient directed parallel to the rod axis, so that the rods can be made continuously or semicontinuously with high drawing speeds.

Abstract: A pneumatic tire made of polyurethane elastomers or other moldable material which can be made into an elastic, plastic material by means of a chemical reaction is provided. The tire includes a belt which is mounted beneath the tread surface which essentially consists of threads of a stress carrier, which threads run in the circumferential direction of the stress carrier. Alternatively, the belt is made of a moldable material which can be hardened into an elastic, plastic material having an E-modulus larger than 20,000 N/cm.sup.2. The tire is characterized by the provision of an increasing bending radius of the neutral axis of the tire sidewall from the tire bead to the edge of the belt.