Abstract: The horn comprises a body portion, a detachable and hence replaceable end portion, and a securing member securing the end portion to the body portion. The securing member has a first threaded portion received in a tapped hole in the body portion and a second threaded portion received in a tapped hole in the end portion. By rotation of the first threaded portion in its tapped hole, the orientation of the end portion, when it is in tight contact with the body portion, can be corrected. A method of detachably securing an end portion to a body portion of a horn is also claimed.

Abstract: The invention relates to a method of and an apparatus for measuring surface temperature of especially moving objects, advantageously measuring the temperature of fibrous products, and particularly of wires during production. The essence of the method lies in that two concentric shells not being contiguous with either the object to be measured or with one another are fitted to the object to be measured, temperature is sensed in the two end locations and in the central region of the inner shell, and in the central region of the outer shell, these values are brought to be equal to the value measured in the central region of the inner shell by dissipation or by heat transfer (heating), then temperature is measured in the central region of the inner shell. The essence of the apparatus lies in that it comprises two concentric shells separated from one another, an inner sensing and an outer compensating shell, being provided with heated surfaces, and dissipating elements, respectively.

Abstract: An electronic Celsius thermometer circuit suitable for fabrication in integrated circuit form has an output directly related to the temperature scale. The zero crossing is created by subtracting a negative-temperature-coefficient voltage from a positive-temperature-coefficient voltage with one of the voltages being made adjustable and set to equal the other. The output response is set to provide the desired temperature scale. If desired the zero crossing and temperature scale can be set for Fahrenheit readings as well as for Celsius. A circuit improvement is also disclosed for compensating the thermometer for departures from linearity.

Abstract: A magnetic or optical disk load/unload device for automatically centering and clamping a disk to the spindle of an information storage device. The apparatus is comprised of a toggle arm, a toggle arm rotating device, a support base, a support hub having a centering stem and a concentric annular steel ring disposed on its mating surface, a member for clamping the hub to the support base, a spindle having a centering hole on its mating surface and a concentric magnetic material ring on its mating surface, and a spindle rotating motor. In operation, the toggle arm is rotated from a first bent position causing the support base hub and disk located thereon to advance toward the spindle, the hub slidably retained on the base by a of clamping member activated by a cam assembly. Upon full extension of the toggle arm, the hub and disk are centered on the spindle, clamped to same by the magnetic and steel rings.

Abstract: An improved archery bow sight comprising a frame, a forward and a rear sighting element movably mounted to the frame and a mechanism for simultaneously positioning the sighting elements along any one of a plurality of sighting lines originating at the operator's eye to enable the operator to maintain his sighting eye at one position while aiming the bow at any one of a plurality of ranges. The sight further comprises a range indicator and a range adjustment trigger that may be actuated by the operator while the bow is drawn.

Abstract: A device for raising and centering 45 r.p.m. records on a standard turntable having a central spindle. The device fits around the spindle and completely fills the large hole of 45 r.p.m. records. Four radially outwardly extending lifting arms project through corresponding slots made in the cylindrical housing of the device. A vertically displacable circular cap is mounted at the upper portion of the housing and is adapted for manual depression. The internal construction of the cap and housing is arranged to raise the arms and a record lying thereon by lever action when the cap is depressed against the inner portions of the arms.

Abstract: In the vibration system of a pickup cartridge of a record player, the object of preliminarily applying a required deforming bias, in a direction opposite to the direction of the vertical tracking force, to the damper which deforms with the application of a vertical tracking force, and of releasing this deforming bias when the stylus is actually applied with a vertical tracking force, is achieved by arranging the cantilever-supporting tension wire which pulls the cantilever in the rearward direction, so as to pass through the damper at a position eccentric relative to the center of this damper which is disposed between the armature-carrying cantilever and the tension wire holder.

Abstract: A temperature sensing assembly comprised of clinical thermometer including a reservoir portion disposed in a body member comprised of a shaft portion having a lip positioning element at one end and an outwardly extending flared bulbous portion at the other end for positioning within the oral cavity wherein the clinical thermometer is disposed in a channel formed in the body member whereby by reservoir portions of the clinical thermometer coextends with the bulbous portion of the body member into the oral cavity of the mammal being temperature sensed.

Abstract: A reusable metal clamp 10 for retaining a fused quartz ampoule 25 during temperature cycling in the range of 20.degree. C. to 1000.degree. C. A compressible graphite foil 27 having a high radial coefficient of thermal expansion is interposed between the fused quartz ampoule 25 and metal clamp 10 to maintain a snug fit between these components at all temperature levels in the cycle.

Abstract: An apparatus for measuring the dimensional changes which occur in a material, especially a polymer, during polymerization, or curing comprising a mold constructed of polytetrafluoroethylene having a bottom member to which are fixedly attached two side members and a front member to which is slidably attached to the bottom and side members a movable back member to form a cavity for receiving the material; and screws which ultimately are embedded in the material extending into the cavity are attached to the front and back member wherein movement of the back member resulting from dimensional changes during polymerization or curing are monitored by a dial gauge.

Abstract: A pneumatically powered oxygen pressure loss alarm system for use in conjunction with a gas anesthesia machine having an oxygen supply circuit and a gas mixing circuit. The oxygen pressure loss alarm system comprises a volume chamber in which a pressurized volume of oxygen is maintained, an oxygen escape valve for venting the chamber when pressure within the oxygen supply circuit falls below a critical minimum level, and an audible alarm operable in response to the flow of oxygen vented from the chamber through the oxygen escape valve. In addition, a reverse flow of residual gas from the gas mixing circuit, through a master valve also used to shut off the gas anesthesia machine, is coupled to the alarm to provide an audible indication of machine shut-down.

Abstract: A method of inspecting heat-insulation performance of a heat-insulating layer surrounding a pipe, which method comprises inserting an insulated electrical conductor line in the pipe having a heat-insulating layer therearound, in case where the pipe is a metal pipe, or another metal pipe laid along the pipe and placed in the inside of the heat insulating layer; causing an AC current flow through the conductor line to thereby induce a secondary current which flows through the pipe or another metal pipe; and measuring the temperature of various points of the outer surface of the heat-insulating layer by a non-contact thermometer to thereby determine the variance of the heat-insulation performance of the heat-insulating layer in terms of the variance of temperature thereof.

Abstract: To load a record into the player, a caddy is inserted into the player and then withdrawn, thereby leaving the enclosed record inside the player resting on a pair of front and back receiver pads. As the pickup carriage moves toward the turntable for playback, the record is lowered to the turntable for rotation therewith without hindrance from the receiver pads. As the carriage is driven back to a standby position after playback, the record is transferred back to the receiver pads for retrieval.

Abstract: A liquid sample is placed in a closed vessel. A thermocouple junction is submerged in the liquid sample. The pressure of the liquid is decreased, or the thermocouple junction is heated, until boiling from the thermocouple junction is detected. The pressure or temperature is then varied until the boiling just ceases. The pressure and temperature at cessation of boiling define the boiling point free of spurious liquid superheating effects.

Abstract: A clapper body individually mounts two striker turrets on opposite ends. Each striker turret carries individual striker heads and is angularly movable on a turret platform tilted sufficiently in the swing plane so that only the head closest the bell mouth is operative.

Abstract: An improved ultrasonic thermometer of the acoustic pulse-echo type for measuring high temperatures and temperature profiles having a magnetostrictive head surrounded by an acoustic pulse generating and pulse sensing apparatus having a positioned electromagnetic coil, the magnetostrictive head joined to an elongated heat sensing wire having a plurality of discontinuities at the distal end thereof to reflect a portion of the propagated acoustic pulse, the improvement comprising a lock fixedly holding the acoustic pulse generating and pulse sensing electromagnetic coil in alignment after initial adjustment in order to achieve long term stability.

Abstract: This invention relates to a device at projectors, which are provided with a lens barrel (1) vertically movable perpendicularly to the optic axis of the lens, and with a lighting arrangement (12), which is mounted rotatably and coupled via one or several hinged arms to the moving means for the lens barrel, so that optimum lighting through the slide to the lens is obtained. According to the invention, the hinged arm comprises two co-operating portions, a lens arm (3) and a lighting arm (13). The lens arm extends from a guide pin (2) on the lens barrel rearward to the slide plane where it is hingedly united with a sector arm (5). The joint (4) between the lens arm (3) and sector arm (5) is rigidly connected to the sector arm and in the lens arm (3) movable in a groove (8). The lighting arm extends from the lighting arrangement (12) forward to and a distance past the slide plane. In the slide plane the lighting arm is pivotally mounted in a joint (4 ) attached on the projector chassis.

Abstract: The sound-reproducing device for playing the record disc has a number of selection poles corresponding to the member of recorded grooves and a stylus force releasing wheel normally urged to a specific direction but which rotated by one of the selection poles to release stylus force on a pickup. The stylus force releasing wheel includes a locking arm confronting the back face of the selection pole in an advanced position for pushing the inclined face of the releasing wheel. Each of the selection poles has a jaw which catches the locking arm and prevents the selection pole when in an advanced position from retraction. A locking device locks the stylus force releasing wheel at the position to which the wheel has rotated. A record disc unit includes a turn table and a record face member disposed in a stacked but axially separable arrangement. A stopper pin is disposed on the record face member.

Abstract: This invention sets forth a wind tracking device particularly useful on sailing vessels for determining the best sailing direction relative to the wind. The reference card is provided with color panels which cooperate with lines on the dome to indicate best direction. Further, the card has circular lines about the axis which cooperate with a dot on the axis of the dome to indicate a 360.degree. level condition around a horizontal plane.

Abstract: A device for visually indicating the moisture content of a potted plant includes a housing defining opposing openings in which an elongated flexible visual moisture indicating member is disposed. A reciprocally moveable support member is operatively associated with the housing and is fixed to the indicating member so that movement of the support member between high and low positions responsively effects flexible downward and upward displacement, respectively, of the exposed portion of the indicating member extending exteriorly of the housing. In such a manner, the moisture content of a potted plant can be quickly ascertained by visual inspection of the relative positioning of the exposed indicator member portion.