Abstract: Device for drilling a hole of predetermined depth having an abutment member non-rotatable in relation to the stationary part of the drilling machine and provided with an abutment surface intended to come into contact with the work piece by the displacement of the drill spindle of said drilling machine towards the work piece, a driving member intended to be connected to the drill spindle said driving member being rotatably and displaceably arranged in relation to the abutment member, a holding member intended to hold the drill and being rotatably mounted relative to the abutment member and displaceably but not rotatably connected to the driving member and provided to be secured against axial displacement in relation to the abutment member and a spring provided between said driving member and said abutment member, the driving member being displaceably in a direction towards the work piece against the action of said spring.

Abstract: Process for the manufacture of dental prostheses comprising a metallic substructure made from a nickel based alloy and coating portions made from ceramic or plastic material, wherein the substructure surfaces to receive the coating portions are metallized.

Abstract: A data slicer including detector means connected to a signal input for detecting the presence of data clock pulses on an incoming signal. Generator means are connected to the detector means for generating a sampling pulse during the time that the presence of the data clock pulses is detected. Filter or delay means are connected to the signal input for establishing the mean level of the incoming clock pulses. Sampler means are connected to the filter or delay means for sampling the mean incoming signal level when established by the filter or delay means during the sampling pulse interval and for storing the sampled signal. Comparator means having a first input are connected to the signal input and a second input connected to the sampler means for receiving and comparing the incoming signal with the sampled signal stored in the sampler means to effect slicing of the data from the incoming signal.

Abstract: A container companion plate comprising a substantially longitudinal member which is provided at each extremity with an internally mounted extension arm, said longitudinal member having one or more container engaging means provided on its upper surface and one or more vehicle lock receiving means provided in its lower surface.

Abstract: Perforated mounting plate permitting the attachment of electrical equipment whose center-to-center distances and the diameter of the fixing members are in accordance with certain recommended dimensions.

Abstract: Device for measuring the volume of sections of a tubular blank by ultrasonic echography. An ultrasonic pulse emitter -receiver is associated with an auxiliary reflector. The transducer and the auxiliary reflector are mounted on a rotary head. The blank moves forward continuously and the ultrasonic beam describes a helix on its surface. On basis of the measurement of the distances from the transducer to the outer and inner surfaces of the tube, a computer calculates the elementary areas and volumes and compares the sum of the elementary volumes with a reference value. The sections of constant weight are marked by a component controlled by the computer.

Abstract: A re-usable envelope having a zip closure which can be locked closed by a sealing device. The sealing device is of plastics material, one part being mounted to the envelope and the other part being engageable therewith, the sealing device only being operable by breaking said other part. The zip tag includes a part for manual engagement to facilitate closing of the sealing device.

Abstract: In an electronic experimenting kit an insulating base is provided on the one surface thereof with two rims and between said rims with grooves inside which are mounted conductors. Electronic components are each mounted on a plate with the terminals thereof connected to conductors mounted on said plate. The rims are provided with grooves into which the plates are slid by the ends thereof. The plates are retained in position by springs which also provide the electrical connection between a base-mounted conductor and a plate-mounted conductor.

Abstract: A liquid crystal applied voltmeter in which a nematic liquid crystal is filled between a pair of light transmitting electrodes at both sides of which polaroidal plates are provided and at least one of the light transmitting electrodes comprises an electric resistance film to which a constant voltage power supply is connected so that a voltage gradient occurs across both ends of the electric resistance film wherein a border between the light transmitting part and the non-light transmitting part of the liquid crystal moves in response to variation of the measured voltage when the measured voltage is applied across both the electrodes.

Abstract: A piezoelectric vibrator unit has a substantially flat holder case which is provided on one side with a recess or recesses each encasing a piezoelectric vibrator plate. The bottom wall of each recess is provided therethrough with a port or ports each at a position which corresponds to an excitation electrode formed on the vibrator plate. Another side of the holder case is used for masking means for forming, for the micro-adjustment of vibration frequency, a vacuum evaporated film on the excitation electrode.

Abstract: This device for locking the door of an enclosure notably for housing safety equipments on aircraft or the like comprises means permitting of opening notwithstanding the additional load resulting from the use of a stronger opening spring than in hitherto known devices of this character, without modifying the external shape and dimensions of the device nor increasing the consumption of electric current for energizing the means provided for releasing the device to its open condition, whereby the device remains completely interchangeable with prior art devices not provided with the complemental features of this invention, consisting essentially in the use of a coil spring having several arms and possibly also of an intermediate lever for increasing the lever advantage of hitherto known single-lever devices.

Abstract: A hydraulic secateurs has two blades at least one of which is a movable blade operated by a hydraulic device including a drive piston controlled by the movable blade and mounted for sliding with play in a longitudinal bore formed in a handle for the secateurs, and a hydraulic distributor controlling the movements of the piston and including a distributing slide valve moving in a cylindrical jacket positioned to the rear of the drive piston and perpendicularly to its axis.

Abstract: This invention provides a process for preparing artificial leather bands or belts, particularly those suitable for use as watch bands or straps which are characterized by bearing close resemblance to natural leather in the appearance, feeling and touch and toughness of the product, inexpensive production cost and easiness in the production control.

Abstract: Variable-speed electric induction motors are known with a closed fluid-flow circuit for coolant liquid driven by a pump operated by the motor. A disadvantage is that the coolant flow varies with speed of the motor. The improvement is that the motor has an ancillary shaft which drives the coolant pump and which is rotated at constant speed irrespective of the speed of the main drive rotor of the motor. The ancillary shaft may be driven by an ancillary rotor cooperating with the main stator of the motor. There may also be provided a coolant fan driven at constant speed, for example by the ancillary shaft and preferably through a releasable clutch.

Abstract: The anti-theft plug or cap for the filler of a gasoline tank comprises a plate with a tapping corresponding to threading on the filler, a body rotatable in respect of the said plate, a securing element serving to render the said body integral with the said plate, and a cylindrical lock mounted in the said body and controlling the said securing element. The securing element rotatable with the rotatable body and serving to render the body fixed in relation to said plate, is provided with an elastically deformable arm resiliently removable from the axis of the plug under the action of the said lock, while its free end, when the arm has undergone no deformation, is disengaged from said teeth, although it engages them when the arm has undergone deformation.

Abstract: The disclosure relates to a device for the continuous production of cheese material through coagulation of milk, comprising a horizontal trough-shaped container, whose ends extend funnel-shaped toward the flattened face edges, a flexible inner wall covering the container wall on the inside, which inner wall can be displaced along the wall of the container and runs as endless band around the face edges of the container, a device for feeding at the inlet and a predetermined amount of milk suitably pretreated for the manufacture of cheese, a transportation of such introduced milk from such inlet end to the outlet end by means of the flexible inner wall at such a velocity that during such a displacement inside the container the milk coagulates to a coagulate which can be cut and, further, comprising a cutting device at the outlet end of the container for cutting the coagulate to cheese curd, which is removed by the rotating inner wall over the face edge at the outlet end of the container for the purpose of furthe

Abstract: This invention relates to a device for removably locking a crossing deflector to a ski. The device includes a base plate fixed to the ski and a removably locking pin which holds the crossing deflector to the base plate.

Abstract: In operation of an internal combustion engine, a lamina of air is introduced into the combustion chamber to line the wall thereof, the fuel being admitted into the interior of the lamina of air. The air lamina may be introduced along a cylinder wall through an annular valve which encompasses an inlet and an exhaust valve, and a secondary air flow may take place through the exhaust valve to a position adjacent the exhaust valve. In an alternative, air is admitted annularly about a fuel inlet valve. In a two-stroke engine, air entering the combustion chamber is driven by the incom fuel mixture to form a lamina which lines the wall of the combustion chamber.

Abstract: The invention relates to the coating of steel articles with organic polymeric material for the prevention of wear and corrosion. To obtain secure and permanent adhesion of the coating on the steel article the coating material is compounded so as to result in graft polymerization with the underlying steel face. Fillers may be included in the coating material for enhancing physical characteristics of strength, wear resistance etc., and a preferred coating material includes monomer having functional groups to interact both with the steel substrate and with the fillers. The coating material may be compounded so as to have flow characteristics, before curing, which permit a smooth and finished exposed face to be obtained, particularly on a rough or unfinished steel substrate surface. The coating process is particularly advantageous in the field of steel automative parts exposed to corrosive environments, for example ball studs.