Abstract: An existing analog two-wire transmitter has a sensor module, an analog excitation circuit, and an analog detector circuit which provides an output representative of a sensed process variable, such as pressure, to a two-wire current loop. The analog detection circuit is removed and replaced with apparatus including a digital converter that digitally calculates the transmitter's output. The output is improved by calculating correction for linearity. The analog excitation circuit may also be replaced with a replacement excitation circuit. The replacement excitation circuit and the digital converter can be energized in series to control energization current. A charge pump can be coupled to the loop to balance the current in the series circuit. The digital converter can also provide electrical span and zero adjustments.

Abstract: An intestinal catheter is inserted into the gastrointestinal tract by use of a guide wire and performs the functions of aspirating the stomach and feeding the small intestine. A feeding lumen communicates with an opening in the downstream end of the catheter. The guide wire can be inserted in the feeding lumen of the catheter when emplacing the catheter into a patient's gastrointestinal tract.

Abstract: An improved tensioning assembly for vibratory screens includes a rigid frame, at least one classifying screen in the frame, an anchor for anchoring one end of the screen, and a rotatable tensioning assembly at the other end of the screen for both anchoring the other end of the screen and tensioning the screen by rotation of the rotatable assembly. The anchor at the one end of the screen includes a plurality of threaded adjustment members spaced along the length of the anchor for flexing the anchor to selectively and incrementally further adjust the tension on the screen to compensate for tension variations across the width of the screen due to torque differentials in the rotatable tensioning assembly.

Abstract: A long intestinal catheter is readily insertable into the small intestine via the nasogastric route. The tube aspirates the small intestine during the operative period, internally plicates the small intestine after surgery, and can aspirate the stomach and the small intestine during the post-operative period. The tube is self-sumping and avoids blockage or closure of any aspirating opening in the tube by the interior lining of the stomach or small intestine during aspiration.

Abstract: A catheter for insertion into the small intestine via the nose, the esophagus, the stomach and the duodenum. The catheter has a pair of inflatable balloons, a first one at its downstream end, and another a short distance (10 inches or 25 cm.) upstream of the first one. The two balloons are inflated when the catheter approaches the duodenum to facilitate passage through a portion of the duodenum which is inaccessible to a doctor who has access to the jejunum during surgery. The catheter may be advanced through the small intestine by grasping one or the other of the inflated balloons through the wall of the small intestine. When one of the balloons is in the inaccessible portion of the duodenum, the other is accessible, and vice versa.

Abstract: In a facsimile receiver, a copy medium is advanced between a platen of triangular cross-section and a plurality of stylii mounted on a moving belt. The platen is rotatable so as to allow different edges of the platen at the apices of the triangular cross-section to be placed in contact with the copy medium. In addition, the platen may be rotated to a position where a flat side of the platen is juxtaposed to the copy medium so as to allow the copy medium to be fed between the stylii and the platen during loading and unloading. The stylii are formed from sheet-like members with a broad surface in contact with the copy medium. Three such stylii are mounted on a sheet metal belt through which the stylii are electrically energized as the belt moves.

Abstract: An edible three dimensional food product and composition. The composition contains about five percent by weight of an uncooked, unhulled sesame seed, a minor amount of an oil rejection material, and a matrix of ground corn dough. Also disclosed is an apparatus for molding the composition into a relatively thick shaped item.

Abstract: The apparatus for making a filled tubular food product in which tubular dough pieces are extruded onto a supporting die member which maintains the internal diameter of the cavity in the dough piece fixed during raising and baking after which the cavity in the baked dough piece is filled with another relatively softer food product.

Abstract: An anatomy testing device for determining pregnancy in gilts and sows is disclosed comprising a housing containing an electronic circuit to generate and analyze ultrasonic waves. Located on the exterior of the housing are a transducer probe for emitting ultrasonic waves when in contact with the animal's body, a first light to indicate that proper airless contact has been made between the animal's body and the probe, a second light to indicate pregnancy of the animal because of the increase in fluid content of the uterus, an audible alarm to also indicate pregnancy, a charger plug for recharging the batteries, and a test button to activate the electronic circuit. The circuit comprises an ultrasonic transceiver monolithic integrated circuit, an inverter means, a binary counter means, two AND gate means and R.S. flipflop means to generate, transmit, receive the echo of, analyze, and interpret ultrasonic waves to determine animal pregnancy.

Abstract: An apparatus and method for making a filled tubular food product in which tubular dough pieces are extruded onto a supporting die member which maintains the internal diameter of the cavity in each dough piece fixed during raising and baking after which said cavity is filled with another relatively softer food product.

Abstract: A circuit means including a power source, a cathode ray tube, a source of high frequency sound, a transducer means for emitting and receiving sound signals, and mode control means for varying the visible output of energy across said cathode ray tube for making various anatomical measurements by emitting high frequency sound into an anatomy through said transducer, whereby the amplitude and frequency of reflected signals received by said transducer will be visibly reflected on said cathode ray tube.

Abstract: FM signals within a predetermined bandwidth representing dark-light variations in a document are transmitted over a communications network to a facsimile receiver. Signals are demodulated by a single-shot multivibrator which is triggered at a frequency in response to the FM signals. An average DC voltage detector is connected to the output of the multivibrator to generate an average DC voltage representing the ratio of the astable state duration to the multivibrator cycle. A bandpass filter in the receiver input substantially attenuates signals outside the range of the FM signals thereby enhancing facsimile quality and precluding an erroneous receiver shutdown by a control circuit responsive to the frequency and presence of signals being transmitted. Contrast and brightness controls are included in the stylus drive circuit of the receiver.

Abstract: A transportable silo assembly is provided which includes a self-supporting structure with a platform with an opening in it, pillow blocks mounted on the platform, trunions journaled in the pillow blocks, a silo mounted on the trunions for pivotal movement between an erected position and a lowered transport position, a winch mounted on the structure, a cable so arranged as to move the silo between erected and transport position upon operation of the winch, and structures on the leading and trailing ends of the self-supporting structure by which wheels can be mounted and demounted, whereby the self-supporting structure can be transported.

Abstract: A facsimile transceiver comprising a document/copy receiving drum, a motor for rotation of the drum about the drum axis and a read/write head mounted for linear movement in a direction parallel with the drum axis. When the transceiver is operating in the receive mode, the copy medium having adhesive along at least one edge circumscribes the drum in a closed loop so as to eliminate the necessity for transmitter-receiver angular synchronizing signals which would otherwise be required for locating the copy margin adjacent the edge of the copy paper. After completion of a transmission, the copy medium is severed along a line so as to provide an appropriate margin for the copied information content. The closed loop is formed from a single sheet having adhesive along at least one edge for purposes of forming a bond between opposite edges of the sheet when the sheet is applied to the drum.

Abstract: A facsimile transmitter detects dark-light variations in an illuminated document by means of a photodetector. Fiber optics form an optical path from the illuminating means to the document and from the document to the photodetector means with filter means being located in the optical path for attenuating light in the near infrared region of the spectrum. Amplifier means are coupled to the photodetector means and automatic gain control means are associated with the amplifier means for increasing the gain of the amplifier in response to a lesser amount of light detected by the photodetector. The gain control means is adjustable so as to limit the increase in gain when detecting dark regions. Lead networks are coupled to the amplifier means to increase the speed of response to dark-light variations in the document.

Abstract: A facsimile transceiver comprising a document/copy receiving drum, a motor for rotation of the drum about the drum axis and a read/write head mounted for linear movement in a direction parallel with the drum axis. When the transceiver is operating in the receive mode, the copy medium having adhesive along at least one edge circumscribes the drum in a closed loop so as to eliminate the necessity for transmitter-receiver angular synchronizing signals which would otherwise be required for locating the copy margin adjacent the edge of the copy paper. After completion of a transmission, the copy medium is severed along a line so as to provide an appropriate margin for the copied information content. The copy medium may comprise a magazine having a plurality of sheets of a copy medium which form individual closed loops where one edge of each sheet overlaps with and is attached to the opposite edge of the sheet.

Abstract: A facsimile transceiver comprising a document/copy receiving drum, a motor for rotation of the drum about the drum axis and a read/write head mounted on a rotating shaft for linear movement in a direction parallel with the drum axis. When the transceiver is operating in the transmitting mode, the information of the original document is scanned by a reading fiber optic carried on the read/write head. Illumination of the document is provided by a light pipe or a plurality of fiber optics which substantially surround the reading fiber optic which extends from the base of a recess in an arcuate surface of the read/write head which rides on the document carried by the drum.

Abstract: A facsimile transceiver comprising a document/copy receiving drum, a motor for rotation of the drum about the drum axis and a read/write head mounted for linear movement in a direction parallel with the drum axis. When the transceiver is operating in the receive mode, the copy medium having adhesive along at least one edge circumscribes the drum in a closed loop so as to eliminate the necessity for transmitter-receiver angular synchronizing signals which would otherwise be required for locating the copy margin adjacent the edge of the copy paper. After completion of a transmission, the copy medium is severed along a line so as to provide an appropriate margin for the copied information content. In one embodiment of the invention, the closed loop is formed from a single sheet having adhesive along one edge for purposes of forming a bond between opposite edges of the sheet when the sheet is applied to the drum.