Abstract: Precombustion chamber construction in a cylinder head of a diesel engine utilizing ceramic material to increase resistance to thermal stresses. A space is provided between the precombustion chamber construction and the cylinder head at least at the main combustion chamber of the diesel engine, and one or more ceramic bodies are shielded from the metal cylinder head and any other metal by thermal insulation to minimize thermal stresses and enable combustion in the precombustion chamber to take place at a higher temperature whereby the power/weight ratio and the efficiency of the engine are improved. The precombustion chamber construction in one embodiment is composed of axially successive parts, and at least the part nearest the main combustion chamber is made of the ceramic material and shielded as indicated.

Abstract: A power transmission system for vehicles comprising a driving member connected to an engine crankshaft, and a driven member connected to a driving wheel, the driving and driven members being connected with each other via a one-way clutch and a friction clutch which are disposed in parallel to each other. The one-way clutch is in a connected state when a forward load is applied to the engine, and in a disconnected state when a back load is applied to the engine. The friction clutch is operated to slip when it receives a torque greater than a predetermined value.

Abstract: Parisons are passed along a plurality of heating boxes for heating them to a temperature desired for blow molding. Individual radiators are switched off in groups to obtain varying temperatures along the axial direction of the parisons.

Abstract: An improved anti-lock brake device of simple and compact construction adapted for use with a motorcycle having front and rear master cylinders for actuating front and rear wheel brakes, respectively. The front master cylinder has a first brake chamber for producing a brake torque for a front road wheel and a first control chamber for controlling the brake torque so as to prevent locking of the front wheel. The rear master cylinder has a second brake chamber for producing a brake torque for a rear road wheel and a second control chamber for controlling the brake torque so as to prevent locking of the rear wheel. The control chambers are each in communication with a single common source of oil pressure through a first control valve and with an oil tank through a second control valve.

Abstract: A composition for cleaning lenses which includes a non-polar solvent in the form of cyclohexane and/or ethyl acetate with a trace amount of an organic solvent in the form of chloroform or ethyl acetate and a polar solvent in the form of an alcohol. The composition further includes thimerosal, a wetting agent, a surfactant, and a buffer. The composition is provided as a saline solution.

Abstract: A noise simulator including a reflection absorbing circuit connected between a high-frequency noise pulse generator based on the principle of a charged delay line and a DC capacitor connected to the power line of the equipment under test. The reflection absorbing circuit is composed of a parallel resistor and a series resistor. The resistances of these resistors are determined so that the impedance at the input side of the reflection absorbing circuit in a condition that a predetermined standard impedance connected thereto is equal to the output impedance of the generator and that the impedance at the output side of the reflection absorbing circuit in the condition that the generator is connected thereto is equal to the predetermined standard impedance. A grounded electric conductor plate is movably disposed commonly adjacent to the series resistor and the DC-cut capacitor to adjust the stray capacitance prior to use for noise simulation.

Abstract: An exhaust gas cleaning system for an internal combustion engine having a cylinder head with a plurality of exhaust valve ports therein associated with respective exhaust valves and an exhaust passage for discharge of exhaust gases to an exhaust system. The exhaust passage is constituted by a manifold exhaust port which is connected to the exhaust system and a plurality of branch ports which branch from the manifold exhaust port and communicate with respective exhaust valve ports. A secondary air passage is directly connected to the respective branch exhaust ports for supplying secondary air thereto in immediate proximity to the exhaust valves. Each secondary air passage is composed of a manifold secondary air passage opening externally of the cylinder head and branch secondary air passages branching from the manifold secondary air passage and communicating with the branch exhaust ports.

Abstract: A braking oil pressure control device for a hydraulically operated anti-skid brake system comprising a pair of serially aligned first and second cylinder chambers defined in a cylinder body on the opposite sides of a partition wall. The first cylinder chamber is divided by a brake piston on the opposite sides thereof into a first brake chamber communicating with a brake master cylinder and a second brake chamber communicating with a wheel brake such that when the pressure in the first brake chamber is pressurized under the action of the master cylinder, the brake piston is moved to pressurize the second brake chamber for actuation of the wheel brake. A control piston is slidably received in the second cylinder chamber and cooperates with the partition wall to define a control chamber communicating with an anti-skid brake control hydraulic circuit.

Abstract: One detects the stoppage of a tuyere 1 for blowing in, under the surface of the metallic bath 2 of a converter, of a compressed gas delivered regularly at a lower pressure than the compression pressure by measuring, by a sensor 17, the temperature of the tuyere 1 in the region 16 of the upstream end 15 of the tuyere in the vicinity of the base plate 11 of the converter and one detects an abnormal elevation of the temperature indicating a stoppage of the tuyere (1).

Abstract: A simulated-noise signal is injected in the power line of equipment under test without loss of AC power by the use of a series resonance circuit having a resonance frequency equal to the frequency of the AC power supply. The series resonance circuit is connected in the power line in parallel with the equipment, and a capacitor is connected to the power line in parallel with the series resonance circuit and the equipment. A switching element is used to short-circuit the resonance circuit when noise simulation is not carried out. For the simulation of lightening strikes the circuit further comprises a simulated-noise signal generator including a capacitor charged by a DC power supply, a first switching element to discharge the charge of the capacitor to the equipment, and a second switching element for establishing a by-pass of the discharging current. By closing the second switching element after the first switching element is closed, a square-wave signal is fed to the equipment.

Abstract: For forming a perforated pipe a method is employed which includes winding on a mandrel having multiple spaced protrusions thereon angularly related strips arranged between the protrusions. These strips cooperatively define openings through which the protrusions extend. The strips are formed of fibres which are impregnated with a settable resin or plastic which combine with the fibres to form a tube adequate to resist a pressure of about 600 p.s.i. Because the protrusions are employed the fibres can be so impregnated as to be resin-rich. The openings may be screened with resin-poor granules arranged in vaulted configuration. A further strip may be wound around the foregoing arrangement to hold the granules against the resulting pipe.

Abstract: A method of activating titanium surfaces for subsequent cladding with metallic coatings by the steps of wet-blasting, etching and activating, the activating being effected with a solution of chromic acid, hydrofluoric acid and hexafluosilicic acid.

Abstract: A pilot signal recording and reproducing system comprises a frequency generating circuit for successively generating a first frequency, a third frequency, a second frequency, and a fourth frequency in this order or in a reverse order for every recording unit of one track, where the first and second frequencies are mutually separated frequencies, selected from a first frequency group, and the third and fourth frequencies respectively are frequencies approximately equal to the first and second frequencies, selected from a second frequency group, a recording device for recording a frequency obtained from the frequency generating circuit as a pilot signal together with an information signal onto a recording medium, a comb filter for frequency-selecting pilot signals recorded on both sides of a track which is to be reproduced, where these pilot signals have mutually different frequencies and are included as crosstalk within a reproduced signal reproduced from the recording medium, a control circuit for controlling

Abstract: A motorcycle having a frame with front and rear wheels thereon, and an engine supported between the wheels. A driver's seat is mounted on the frame between the engine and above the rear wheels. The seat is supported by a hinge connection to the frame to be movable between a raised position lin which equipment located under the seat is accessible and a lowered driving position. A resilient member, such as a fluid damper, is connected between the seat and the frame so as to be energized when the seat is lowered and to apply lift force to the seat in a subsequent opening operation. The hinge connection is movable between a forward and a rearward position, and in the forward position the seat is held in its lowered position, whereas when the hinge connection is moved to the rearward position, it is released for being moved to its raised position. A grip member is secured to the seat and to a depending cover thereon and supports elements of the releasable holding system of the seat with the frame.

Abstract: A motorcycle of chain drive type comprising a frame and an engine supported from the frame at a plurality of locations. The engine drives a drive wheel of the motorcycle through a chain. At least at one of the plurality of support locations is a link coupling coupled to the frame and engine for pivotal movement in a vertical plane while being rigid in the widthwise direction of the frame.

Abstract: A magnetic recording and/or reproducing apparatus has a tracking control device for performing tracking control by varying the height position of a rotary head which rotates to record and/or reproduce signals in an oblique track on a magnetic tape, according to a control signal applied to the tracking control device. The magnetic recording and/or reproducing apparatus comprises a detecting device for detecting the height position of the rotary head at a predetermined position within an angular range of the rotary head, where the rotary head does not make contact with the magnetic tape, and a control signal forming circuit for forming a control signal according to the output of the detecting device and supplying the control signal to the tracking control device to control the height position of the rotary head so that the height position becomes constant.

Abstract: A hand covering comprising a blank of material including front and back portions secured together along perimetral edges to form an enclosure having an access opening. The front and back portions include respective radially projecting portions extending laterally so that when the radially projecting portions are secured together, a hollow thumb covering is formed which is flexed to project from the front and back portions when a hand of a user is inserted into the closure. The hand covering can be in the form of a mitt, glove or puppet.

Abstract: A combustion technique and control is provided by the use of an optical pyrometer by means of which combustion control is afforded in accordance with the inspection of the combustion flame. The preferred optical pyrometer takes the form of an optical pyrometer having a single measurement cell which is alternately exposed to the flame through different filters arranged on a rotating disc driven by a motor. The circuit associated with the optical pyrometer, for purposes of generating control signals, features the use of a synchronous D. C. restorer which establishes a reference level for minimum signal distortion. Also employed is an AGC circuit by means of which one of the signals derived from one of the aforementioned filters is utilized to minimize undesired variations in the results. Gating logic is used to separate the two channels derived from the different filters and actually demultiplexes the two separate channels.

Abstract: A mixing apparatus and associated method comprising a system for supplying a first substance of liquid constitution and a system for supplying a second substance to an assembly of pipe elbows to effect mixing and transport of the substances along the assembly. The pipe elbows are right angle elbows connected one after the other in groups of three. Each group has an inlet and an outlet disposed in parallel planes and axially offset from one another. The pipe elbows in each group have center lines disposed in mutually perpendicular planes to cause the mixture to rotate as it travels along the pipe elbows.