Abstract: In a device and process for the deposition of pure semiconductor materials, specially silicon, by thermal decomposition of gaseous compounds of said semiconductor materials on carrier bodies heated to decomposition temperature, wherein the device consists of a silver plated base plate, mounting means and electrical connections thereon for heating the carrier bodies, as well as pipe connections for supply and exhaust of said gaseous compounds, and a bell-shaped cover slipped onto the base plate and forming a gas-tight seal therewith, the improvement that the area of the bell-shaped cover facing the reaction space consists of silver or silverplated steel.

Abstract: At the beginning of a working stroke of a compressed air loaded working piston disposed reciprocally in a pneumatic operated ramming tool said piston is initially set in motion under the action of minor amounts of compressed air until its top becomes immersed into stored compressed air and the working piston is then exposed to the full force of said stored compressed air to perform its working stroke. This working process permits to use a substantially simpler ramming apparatus.

Abstract: A pivotable pipe slide for use in a two cylinder concrete pump includes a swing pipe which is pivotably moved in a reciprocal fashion between the two discharge openings of the pump cylinders in such a manner that it is pressed against the discharge openings in its end positions, while it is moved away therefrom during its pivotal movement between its end positions. Pivoting is effected by means of a movable joint which is coupled to an end segment of the swing pipe and which has an axis disposed normally to the pivot plane of the swing pipe, a fixed joint spaced from the movable joint and disposed centrally between the discharge openings which also has an axis disposed normally to the pviot plane and a guide joint which is coupled to the movable joint and is pivotable about the fixed joint.

Abstract: An improved flowmeter for liquids is provided of the type which includes a housing, a cylindrical chamber formed in the housing, a shaft rotatably mounted in the housing and extending coaxially through the chamber, an impeller mounted on the shaft and an inlet and outlet channel provided in the housing and communicating with the chamber. The impeller is provided with a coaxially disposed circular disc having a plurality of radiation-permeable passageways formed therethrough spaced about the periphery thereof. A radiation source is disposed on the side of the disc and a radiation sensor on the other side of the disc in axial alignment with the passageways thereof. The flowmeter is especially useful for accurately determining relatively low flow rates.

Abstract: A low pressure, tread wear and speed indicator for a tire includes at least one abutment member secured to the exterior surface of one of the sidewalls of the tire adjacent to the tread, which projects laterally outward from the sidewall. The abutment member is positioned at a distance radially inwardly from the tread such that, upon tire deflation or excessive tread wear or a combination thereof, the abutment will strike the road surface during vehicle operation, to produce a vibrational and/or audible signal perceivable by the driver, indicating an unsafe tire condition. The indicator may also include a weighted insert embedded within the abutment member which, upon operation of the vehicle at an excessive or illegal rate of speed, will produce an eccentric tire condition which, in turn, causes a vibrational signal. A tire deflation indicator which includes a segmented radially-extending rib formed on the interior surface of the tire sidewall is also provided.

Abstract: A pressure balancing system for an internal combustion engine wherein a conduit means connects the intake manifold to the crankcase for balancing the pressures therein. A valve is located in the conduit means and is responsive to the speed of the vehicle. A vehicle speed responsive device controls the opening and closing of the valve. The valve is normally closed at low or no speed and is opened at a predetermined speed, such as about 20 to 25 miles per hour, to connect the intake manifold to the crankcase so as to substantially balance the pressures therein at higher speeds. An oil separator may be inserted in the conduit means.

Abstract: An improved diving mask includes a rubber body configured to mate with the user's face, a viewing lens having a mounting frame extending about and secured to its rim and a fairing body which substantially encompasses the rubber body and is configured for snap-fit engagement with the mounting frame with the forward edge of the rubber body sealingly engaged between the fairing body and mounting frame. The assembly is designed to maximize the visual field and means are also provided for quick and regulatable connection with a rear holding-strap.

Abstract: A device for X-ray diagnosis, includes an X-ray tube, an image layer carrier, and a compression device for compressing a portion of the patient to be examined fixed to a side of the image layer carrier directed toward the tube. The compression device has two flat, superimposed, interconnected layers of low X-ray absorption material extending over the entire illuminable surface of the image layer carrier, so that the borders of the layers are not X-rayed. One of the layers is directed toward the tube and is fabricated from an elastically extensible material and the layers define therebetween an inflatable central circular section and a narrow tube-like lead section extending from an edge of the two layers to the central circular section. The compression device permits the patient to be X-rayed in the area of the inflatable circular section and in the area laterally adjacent to the inflatable circular section without producing edge shadows.

Abstract: A bracket assembly for the spot-facing of holes of difficult access in a workpiece includes a lower generally horizontally disposed support base, an upper elongated hollow member coupled to said base and having a relatively narrow projecting front end which is dimensioned to reach into workpiece recesses of difficult access, and a rotatable main drive shaft and a rotatable tool arbour carried by the upper member spaced from one another. The assembly also includes means for coupling the main drive shaft to the tool arbour to permit the main drive shaft to drive the tool arbour.

Abstract: A method and apparatus is described by which photocopies can be obtained from documents and the like without the need for optical means for forming focused images of the documents.

Abstract: A method of producing an annular bead core assembly for a pneumatic tire from a plurality of wires of substantially rectangular cross-section, wherein the wires are formed into a plurality of plies. The wires of each wire ply then are arcuately deformed in a direction substantially perpendicular to the desired plane of the annular assembly when made but in a direction which will be towards the inner side of the tire when completed, each arcuate deformation yielding an arc having a constant radius. The arcuately deformed wire plies thereafter are wound on a tapered support to form the assembly.

Abstract: A cable for the reinforcement of plastic and elastic articles, such as conveyor belts and the like, is provided which includes a plurality of metal strands which are twisted to form a cable and a non-metallic insert which is disposed between the surfaces of the strands which oppose each other so as to prevent the strands from contacting each other, while leaving the surfaces of the strands which define the outside diameter of the cable exposed. A method and device for producing the cable is also provided.

Abstract: A connector is described for joining tubes together, particularly plastics tubing as used in laboratories and the like.The connector comprises a first member having a barb-like projection through which the tube can be pushed but cannot be pulled in the reverse direction due to the interaction between the barb-like projection and the surface of the tube. The protruding captive end of the tube passes through a resiliently deformable disc of plastics material preferably Polytetrafluroethylene and in a preferred embodiment the disc is partly housed in a cup-shaped extension from the first member.The assembly of first member and disc is secured within a sleeve by means of a screw-thread engagement between the said sleeve and a further member which acts on the rear of the said first member. The said further member is screw-threadedly advanced into or onto the sleeve.

Abstract: A device for storing valuables includes a multiplicity of safety deposit boxes arranged in a transportable and releasably-anchorable column, a hollow receiving jacket anchorable in a ground support, and means for releasably anchoring the column in the receiving jacket. The column consists of a plurality of sets of vertically-superimposed safety deposit boxes, disposed adjacent to one another with the sets being disposed side-by-side in a generally circular arrangement.

Abstract: In an elongated field lamp housing made of assembled sheet metal parts of the type including a U-shaped elongated lamp element, two U-shaped front faces joined to opposite ends of the lamp element and a generally U-shaped, elongated covering hood joined to the front faces and the lamp element, at least the front faces and the lamp element are provided with overlapping and abutting surfaces defining connecting zones. The front faces and the lamp element in these connecting zones have simultaneously-formed coacting indentations formed therein from one side of the connecting zone, for joining the front faces and lamp element together.

Abstract: An S-O-S distress signalling device for flashing a lamp, consisting of a decade binary counter, a signal converter circuit connected to the counter and a timer having its output coupled to the lamp and the input of the counter. The counter and converter circuits provide three charging paths to the timer, so that rapid flashes will be produced to simulate the "S" code and two charging paths to the timer to simulate the "O" code at a slower repetition rate. Between each S-O-S signal, only one charging path is provided, to slow down the timer to define the interval between the coded messages.

Abstract: A thermally-controlled valve for a steam trap and the like, includes a thermally-controlled element including generally plate-like outer and inner wall portions and a generally plate-like, resilient membrane member disposed between and welded at its outer edges to the wall portions. The outer wall portion and the membrane define therebetween a chamber for accommodating an expanding medium and a reciprocably movable locking member is disposed generally between the membrane member and the inner wall portion, and is disposed for cooperative engagement with the valve seat of the steam trap. The membrane member is coupled to the locking member to effect movement of the locking member relative to the valve seat, and is comprised of a plurality of superimposed membrane lamellae, which permits proper functioning of the valve under high operating pressures.

Abstract: Process for making a pourable material for chewing gum by adding to a dry base of chewing gum heated to about 60.degree.-120.degree. C., dry sugar materials, polysaccharides, natural gums and swelling agents, or mixtures thereof, mixing the mass at this temperature for about 1-15 minutes, subsequently cooling the mixture to a temperature of from 30-minus 5.degree. C. and continuing the mixing for about 1-15 minutes.

Abstract: Lap cutting blades are provided which are useable for the multiple lap cung of solid materials, such as semiconductorrods. The blades each have a generally rectilinear cutting edge, the length of which is 1-75 times the thickness of the blade, as measured at its cutting edge. The cutting edge of each blade has rectilinear edge portions separated by a plurality of notched edge portions which, in turn, define a plurality of recesses which encompass 5 to 25% of the total blade length and 5 to 40% of the effective operating length of the blade. The notched blade edge portions define a notch angle of between 20 and 80 degrees, as measured between the tangent thereto at its point of intersection with the rectilinear cutting edge portion and a line perpendicular to the rectilinear cutting edge portion.

Abstract: A stackable, tray-type packaging unit for semiconductor discs, having a lr portion accommodating the discs and a matching lid, comprising two upright, elongated side walls in the lower portion and two narrow end walls, all walls as well as the lid consisting of deep-drawn plastic material inert to the disc material. A plurality of ribs are formed opposite to each other on the side walls, serving as guide means for the discs during the loading of the unit, stabilizing ribs for accommodating the discs are provided in the base of the lower portion on the joining line between opposite guide ribs. The lower part of the side walls are curved inwardly at an angle of 30.degree. to 60.degree. with respect to the perpendicular upper part.