Abstract: A copying control arrangement for controlling functioning of a copying apparatus having a multi-copying mode to effect a continuous copying. The control arrangement includes a first switch for starting ordinary copying functioning, a second switch for causing the copying apparatus to function in a trial copy mode, a timer for starting subsequent copying function after lapse of a predetermined period of time subsequent to termination of copying functioning when the copying functioning is executed in the trial copy mode, and a control device for starting the ordinary copying functioning selectively by time-up signal of the timer or by start signal from the first switch during timer functioning of the timer.

Abstract: A power controlling circuit for automatic temperature regulator or the like using a zero voltage switching control. Clocks are dispersed and selected, in accordance with control factor, from among the clocks synchronized with the load power supply when zero voltage is detected from the load side to perform the zero cross control of the energization to the load through the detection of the zero voltage from the load side thereby to drive the zero cross control by the selection clock. The current limit close to the phase control can be achieved without any production of the noises. Also, the power control can be achieved without any production of the noises and does not damage the resolution and response property.

Abstract: A tilting device for use in an anti-glare mirror including a prism mirror, a plate for holding the prism mirror, and a casing for accommodating the prism mirror and the plate in it. The tilting device includes a contact projection mounted on the plate, a spring for urging the plate and the prism mirror, a rotary member having a cam face formed on its one face, and a reversible motor for driving the rotary member such that the prism mirror is changed over to either one of a normal position and an anti-glare position.

Abstract: The invention comprises an improvement to a compact copying apparatus of a slit exposure scanning type. A plurality of sheets of plastic lens elements provide an array of optical erecting lens systems that combine to provide overlapping images of an original on an image recording member. The optical system is designed to comply with predetermined parameters of distance between the original and the image recording planes, the magnification of the inverted real image, the maximum effective aperture of the lens system, and the distance between respective edges of maximum effective apertures of adjacent lens systems.

Abstract: An improved wide angle zoom lens system of an inverted telephoto type having a negative object side lens group and a positive image side lens group is provided, in which an air space to be varied in accordance with the shift of the object side lens group for focusing is located at the image side of a negative component in the object side lens group.

Abstract: An optical analyzer such as oximeter is provided including a source of light having a plurality of different wavelengths. At least two or more of the different wavelengths have a fixed relationship of light absorption after coaction with hemoglobin oxide. The light is directed at the subject tissue and received after coaction by an optical probe. A first signal representative of the degree of light absorption at a predetermined standard wavelength is determined and then an attempt is made to match a second wavelength having a fixed relationship of light absorption to the predetermined standard wavelength, e.g., equal absorption, to generate a second signal representative of the second wavelength, whereby the amount of hemoglobin oxide can be determined in the bloodstream.

Abstract: The automatic focusing system disclosed is characterized that the focusing condition of an objective lens to be focused is repeatedly detected with the objective lens being moved, and that defocus signals, each representing a defocus direction and a defocus amount of the lens according to the focusing condition upon each detection, are processed in a predetermined statistic method to produce a final signal. The final signal is effected for controlling the axial position of the objective lens to lead the lens to its infocus position. Therefore, the automatic focusing system according to the present invention achieves the high accuracy of focusing and quickness thereof.

Abstract: The present invention provides an improved Gauss type lens system of a five unit six element construction which fulfills the following lens conditions: ##EQU1## wherein: f represents the focal length of the whole lens system; r.sub.8 represents the radius of curvature of the intermediate cemented surface of the doublet of the fourth unit; .SIGMA.d represents the total length of the whole lens system; f.sub.1 represents the focal length of the first unit; f.sub.45 represents the focal length of the fourth unit; and F.sub.23 represents the focal length of an air lens formed between the second and third units (F.sub.23 =N.sub.3 /.phi..sub.23, if the refractive power of the air lens is .phi..sub.23).

Abstract: A toy vehicle is provided that can be manually activated to store kinetic energy. The rear wheels of the vehicle can be positioned so that upon tilting and movement of the vehicle, a gear assembly provides a high gear ratio to rotate a flywheel held off of the support surface. Subsequently, upon release of the toy vehicle, the contact of the flywheel with a support surface drives the car with the rear wheels held off of the support surface.

Abstract: A digital transmitter wherein a read only memory (ROM) is addressed by subaddresses representing vector components of signal point positions of a desired transmit spectrum. In this manner, greatly reduced ROM storage requirements are achieved.

Abstract: A technique for negatively coupling the outputs of polyphase choppers is disclosed, wherein the output inductance of each phase is divided into two windings, and each winding is negatively coupled to a corresponding winding of a neighboring phase. In a preferred embodiment for a three-phase chopper circuit, the output inductance of phase A is divided into windings 100 and 102, the output inductance of phase B is divided into windings 110 and 112, and the output inductance of phase C is divided into windings 120 and 122. Pairs of windings 100 and 110, 112 and 120, and 102 and 122 are respectively disposed in transformers arranged for negatively coupling the windings of each pair.

Abstract: An improved control circuit is disclosed for controlling the arc voltage of welding apparatus. The circuit includes an automatic servo control circuit operative to gradually start the electrode positioning motor in the presence of an error signal indicating that the arc voltage is not at the desired level, to accelerate the motion of the positioning motor until the error signal is nulled and then quickly decelerate the motor to minimize electrode overshoots. The improved circuit is operative to prevent electrode servo "hunting" and results in improved welding operation. Other features and improvements are disclosed.

Abstract: A photographic camera of a type utilizing a roll of film comprises a camera back lid, a take-up spool for taking up the film therearound, and a plurality of switches incorporated in the take-up spool. The switches built in the take-up spool are all closed, when the film is turned around the spool, to generate a signal inidcative of the fact that the film has no doubt been secured to the spool. An electric circuit is also provided for disabling the film wind-up so long as the camera back lid has not yet been closed even though the film has already loaded in the camera.

Abstract: An exposure amount indicating arrangement for use with a photographic printing apparatus or the like, which includes an exposure amount setting section for setting values corresponding to desired printing exposure amount, an elapsed exposure amount output section for successively outputting values corresponding to elapsed exposure amount from starting of the printing, a calculating section for working out a ratio of the elapsed exposure amount to the set exposure amount, and an informing section for visually or acoustically indicating the ratio of the elapsed exposure amount to the set exposure amount, based on the value worked out by the calculating section.

Abstract: A canopy for motorcycles, snowmobiles and the bike which is convertible and mountable on a variety of such vehicles.

Abstract: An improved welding apparatus having an electric motor driven electrode carriage assembly, is disclosed. The carriage assembly is capable of carrying the electrode either towards or away from a workpiece depending upon the direction of rotation of the electric motor. An electric switch and a control unit is operatively associated with the electrode carriage assembly for the switch to be tripped when the electrode in its movement toward the workpiece physically contacts the workpiece. Tripping of the switch sends an appropriate signal to the control unit to reverse rotation of the electric motor for a predetermined time period whereby the electrode is carried to a predetermined distance from the workpiece.

Abstract: An arc welding apparatus is disclosed wherein an electrode carriage is mounted to occupy two positions relative to a lead screw-threaded sleeve assembly which carries the electrode carriage toward or away from a workpiece. Direction of lineal movement of the lead screw-threaded sleeve assembly is determined by the direction of rotation of a motor which rotates the lead screw. The electrode carriage is moved from its first position relative to the lead screw-threaded sleeve assembly to its second position substantially simultaneously with the contact of the electrode with the workpiece. An electric switch is operatively associated with the electrode carriage to be tripped when the electrode carriage moves from the first position to the second position. Tripping of the switch causes a control unit to reverse rotation of the motor for a predetermined time whereby the electrode is carried to be a predetermined distance from the workpiece.

Abstract: A modular wall panel fastener assembly is provided having a helical penetrating member attached to a mounting base with a annular recess. A grommet member is designed to interface with the penetrating member and to be mounted within the cavity for securing objects to compressible wall panels in a modern office environment.

Abstract: A scrambler/encryption system for randomizing an information-containing data signal for transmission and for reproducing at the receiver the information-containing data signal. The information-containing data to be transmitted is applied to a modulo-two adder, the output of which is the encoded data for transmission and which is also an input of an n stage shift register. An arbitrary logic network, having a plurality of inputs each connected to a plurality of selected shift register stages, produces a particular key signal responsive to the condition of the contents of the selected shift register stages. At the receiver, the received randomized data is fed simultaneously to the input of an n stage shift register and to an input of a modulo-two adder. An identical arbitrary logic network is connected to the receiver shift register and produces the same particular key signal responsive to the same conditions in the shift register. The modulo-two adder in the receiver has as its second input the key signal.