Abstract: A position detection device according to the present disclosure includes: a detector which outputs a count value corresponding to a position of a detection target, and repeating values from zero until an upper limit value; an extended data storage unit which stores extended data corresponding to an integrated value of change amount in the count value by the rollover; a position calculation unit which calculates an absolute position of the detection target by adding the count value outputted by the detector and the integrated value indicated by the extended data; a section storage unit which, among count sections defined by dividing the range of the count value into at least three, stores the count section in which the count value received from the detector is included; and a confirmation processing unit which confirmation appropriateness of the extended data, based on an isolation number between the count section stored by the section storage unit during position detection processing start, and the count sect

Abstract: In a variable-pitch tape feeder for feeding parts to a pick and place machine used to produce electronic circuit boards, a switch assembly is provided which controls the limits of a shutter movement and the tape advance distance dependent upon the desired pitch. The tape feeder uses a carrier tape to deliver parts to the pick and place machine. The parts are inserted into depressions at regular intervals along the length of the tape. To accommodate tapes of varying pitches, i.e., distances between parts, the feeder uses an electronic control unit to drive the tape feed mechanism and actuate a shutter. The shutter prevents small parts from escaping their respective depressions prematurely. The switch provides a stop surface which limits the rearward travel of the shutter and a flag which is detected by optical sensors to determine the position of the switch and thus the pitch desired by the operator.

Abstract: A crank drive for the material feeder of a machine tool is constructed so that the position of the crank pin along a line of action thereof, viewed in a position/time curve of the crank pin, is a modified sine curve, which curve is modified in that the peaks of the sine curve are flattened. To achieve this, the crank pin is adjustable relative to a crank disc on the one hand by a basic eccentricity setting device and on the other hand by an eccentricity correcting device. The eccentricity correcting device comprises cams mounted stationarily on the bearing arrangement of the crank disc and a cam follower engaging the cams. The cam follower acts on a main slide movably guided on the crank disc. The basic eccentricity setting device is effective between the main slide and a secondary slide carrying the crank pin. The secondary slide is guided on the main slide.

Abstract: In a motor-driven tape cutter including a cavity formed longitudinally on the upper side of a cutter body, a reel provided at one end of the cavity for supporting a ring-like roll of adhesive tape, a feed roller provided at the other end of the cavity for peeling and reeling out the leading end of the adhesive tape over a predetermined length, a backing roller and a presser roller adapted to grip the unreeled tape portion from opposite sides for straightening warping of the tape, a cutter blade for cutting the unreeled tape portion, a motor for driving the feed roller and the backing roller, a switch for actuating the motor, and a switch operating member which closes the switch in response to a tape cutting operation thereby reeling out a predetermined length of the ensuing tape portion, a cutter blade holder pivotally mounted on the front side of the cutter body to cover a fore end portion of the body cavity and at least part of the feed, backing and presser rollers and mounting the cutter blade and presser

Abstract: A paper shifting apparatus for toilet seats includes; a supply mechanism with a pair of rollers pivotally installed in a supply case which is adapted to be fixed at a proper place close to one side of a toilet bowl; a take-up mechanism with a pair of rollers pivotally provided in a taki-up case to be positioned at a place close to another side of the toilet bowl; a continuous toilet-seat covering paper prepared in a stack in the supply case having a feed portion and a running portion movably arranged between the supply mechanism and the take-up mechanism for being rotatably moved piece by piece over the toilet seat; a fine adjusting device fixed at an axial end of the take-up mechanism; and a locating and driving device installed in the take-up case and mechanically coupled with the take-up mechanism; so that, by starting the locating and driving device, the take-up mechanism will be driven to effect the replacement of one piece of the continuous toilet-seat covering paper.

Abstract: An apparatus is disclosed which serves to move a carriage in one direction over a predetermined distance at a substantially uniform velocity and to return the carriage at a varying velocity so that a film web delivered at a constant velocity is intermittently advanced relative to a welding device fixed to a frame. The apparatus comprises a lever, which is adapted to be pivotally oscillated by a drive and which by virtue of a first guide provided on the lever and a slider or roller cooperating with the guide imparts a motion to the carriage. The carriage is movable on track rods in a plane which is parallel to the plane in which the lever is pivotally movable. In order to provide an apparatus which is compact and space-saving, the lever is driven by a crank, which revolves in a plane parallel to the plane in which the lever is pivotally movable.

Abstract: A photographic printer makes a plurality of exposures on photographic print paper. The size of the exposure is determined by a mask. The proper feed length of the print paper is determined by indicia associated with the mask.

Abstract: A device for feeding a web like a microfilm by use of rubber rollers has a stepping motor for driving the rubber roller. The stepping motor is controlled by a pulse generator. A temperature detector is provided for measuring the temperature of the rubber roller or any part of the device having a temperature substantially equal to the rubber roller. The output of the temperature detector is sent to the pulse generator for controlling the stepping motor according to the measured temperature. When the temperature is raised, the stepping motor is controlled to reduce the speed of rotation and the increase in feeding speed due to expansion of the rubber roller is compensated, thereby feeding the web at a constant speed irrespective of the temperature fluctuation.

Abstract: A film or paper drive system for use in photographic film or paper cutters allows the operator to position the film or paper accurately and rapidly by actuating a switch. The film or paper is driven a predetermined distance at a first rate in response to actuation of the switch. If the switch remains actuated after a first period, the film or paper is driven at a second rate. If the switch still remains actuated after a second period, the film or paper is driven at a third, higher rate.

Abstract: A highly accurate and reliable indexing apparatus for progressively indexing a band-shaped work such as a breaker ply of a preset length using steel cords in high accuracy. The indexing apparatus does not use any electric converter but uses a control mechanism. The apparatus includes starting point determining means for determining the starting point of the work loaded to a rotary drum. Further inclusive is end point determining means for determining the end point of the work loaded to and delivered from the rotary drum. Rotation interrupting means is interposed between the rotary drum and an electric motor for interrupting the transmission of the rotations of the spindle by the motor to the rotary drum. Further inclusive is indexing means for suitably indexing the work loaded to and delivered from the rotary drum. Further inclusive is idle rotation preventive means for preventing the rotary drum from its idle rotations.

Abstract: The present invention is a strip feed control which is particularly useful in photographic systems such as film and paper cutters, film notchers, and printers. The photographic strip material is fed by a predetermined feed length during each operating cycle. The operator of the system visually monitors the position of the strip with respect to a reference position or indicator along the feed path and provides adjustment signal through an operator control knob. The strip position is moved in accordance with the desired adjustments, and the predetermined feed length for the next operating cycle is derived from the predetermined feed length of the just completed operating cycle, together with any adjustment in the strip position which was made by the operator.

Abstract: Apparatus for automatically dispensing material from a roll comprising a base and a cover pivotally mounted thereon, a roller for rotatably supporting a roll of material, and material engaging roller for automatically dispensing the material from the roll for at least two preselected time intervals under the control of an adjustable resistor-capacitor timing control circuit.

Abstract: A film advancement system for use in a photographic film cutter includes a movable cursor which indicates, by its position, a desired feed length. A cursor position sensor senses the position of the movable cursor with respect to a reference position and provides a feed length signal indicative of the feed length desired. The film is advanced by a distance determined by the feed length signal.

Abstract: A strip feeder particularly for punch dies comprises drive and idler rollers engageable with opposite faces of the strip being fed, a spring-loaded member displaceable in a first direction during the foward stroke upon receiving an impact and returned by the spring during the return stroke, a first one-way clutch effective to decouple the drive roller from the displaceable member during the forward stroke and to couple same during the return stroke, and a second one-way clutch effective to couple the idler roller to the fixed frame during the forward stroke and to decouple same during the return stroke. The described one-way clutch comprises a first member having an external annular surface and a second member including an internal bore for rotably receiving the latter.

Abstract: In a measuring instrument such as a spectrophotometer which is driven under the control of a dedicated microcomputer and has a provision for wavelength scan, a flow chart lock system is obtained by storing in the random access memory of the microcomputer an indication of the actual chart position between two sprockets on the chart drive. With this information and stored data regarding the position of the scanning apparatus of the instrument, accurate repositioning of the chart to accurately reflect the scanning position even after scale changes or different modes of operation have occurred is accomplished.

Abstract: Stepwise feed apparatus for longitudinal advancement of photographic print or film strips to an operating device, such as a cutter. Control of step feed distance is provided by a digital command derived by selective positioning of a movable cursor relative to the operating device, the cursor being set visually so as to coincide with a selected operating point along the strip. The command distance may be corrected at will either with the strip at rest or when in motion to accommodate changes in the interval between operating points along the strip.

Abstract: A web handling mechanism is described for incrementally feeding a web of stretchable material (e.g., plastic film) to a processing station. The web feed rollers are driven by a motor incorporated in a servo system which electronically controls the feed rate, length of increment, dwell at processing station, etc. Variations in the speed and elasticity of a moving web are accommodated by means of a vacuum box adapted to accumulate a loop of the web material in the box and maintain proper tension on the web as supplied to the feed rollers. A detector in the vacuum box responds to a predetermined length of web accumulated in the box to trip a control circuit which actuates the feed roller motor to move the desired length of web through the processing station and then stop for a preselected interval. The circuit also controls the processing station to synchronize its operation with that of the web feed and the entire sequence is repetitive at high speed.

Abstract: Apparatus of the type wherein a desired length of adhesive strip is fixed to an edge of a stack of sheets with heat and pressure includes automatic means for reliably providing the desired length of strip from a roll of adhesive strip. The automatic means include a pair of rollers which engage and feed strip, one of the rollers being mounted for free rotation and the other of the rollers being coupled to a shaft by a one-way clutch. Means rotate the shaft from a start-of-feed position a selectable amount in one direction, with said other roller and clutch engaged, to feed the desired length of strip and, thereafter, a spring counter rotates the shaft to the start-of-feed position, said position being determined by an abutment which limits rotation of a gear coupled to the shaft. A flywheel frictionally coupled to the shaft prevents bounce when the abutment limits rotation of the gear, thereby preventing rotation of the shaft in said one direction and, consequently, unmetered feeding of adhesive strip.