Abstract: A marking device for printing identification marks on the surface of an object, for example a series of billets conveyed in succession on a roll table, is mounted for vertical and pivotal movement on the end of an upper arm. The upper arm is movable along a first axis in a horizontal plane to extend and retract the marking head assembly into and out of marking position. The upper arm is supported by a carriage which is also movable in a horizontal plane parallel to the roll table along a second axis angularly positioned relative to the first axis. The upper arm is movable relative to the carriage, and the carriage is movable on a beam to carry the upper arm together with the marking device to a preselected position with respect to the objects to be marked on the roll table.

Abstract: A leading edge estimator for a vehicle terrain navigation system is described, the system having a radar terrain sensor which generates a position signal. The leading edge estimator includes a storage circuit for storing a time of arrival signal estimate. A delay circuit receives the position signal from the radar terrain sensor and produces a delayed version thereof. The position signal and the delayed version thereof are differenced and applied to a sample & hold circuit, which generates a sample of the differenced signal after a predetermined time period. The output of the sample & hold circuit is then applied to a one bit analog-to-digital convertor which determines the sign of the sampled difference signal. The output of the analog-to-digital convertor is then used as a control signal to effect the gating of one of two predetermined weighting factors.

Abstract: The present invention is a double-headed hammer slidingly encompassing a ground rod driving shaft having a single anvil affixed thereto which can be selectively engaged by either hammer. The driving shaft has a recess in each end to receive the grounding rod, depending upon whether the action is to initiate and continue the insertion of grounding rod into the ground or to complete the insertion of the rod in accordance with the provisions of the Code. The present invention does not require the operator to take a position above the ground or to use any other instrument to make the complete and proper insertion of the grounding rod into the ground.

Abstract: A three step process for preparing 2-hydroxybenzenesulfonamide from 2,4-dichlorophenol by treatment with chlorosulfonic acid followed by amination to form the dichlorohydroxysulfonamide and finally dehalogenation.

Abstract: 7-Oxabicycloheptane and 7-oxabicycloheptene prostaglandin analogs are provided having the structural formula ##STR1## and including all stereoisomers thereof. The compounds are cardiovascular agents useful, for example, in the treatment of thrombolytic disease.

Abstract: An improved heavy-weight, nonapertured, nonwoven fabric of hydraulically entangled synthetic organic staple fibers has a unit weight of 200 to 850 g/m.sup.2 [6 to 25 oz/yd.sup.2 ], a strip tensile strength of at least 0.26 (N/cm)/(g/m.sup.2) [5 (lb/in)/(oz/yd.sup.2)] and a resistance to disentanglement of at least 50 alternate extension cycles. The fabric is much stronger than such prior art heavy-weight nonwoven fabrics of hydraulically entangled staple fibers.

Abstract: The analog broadband output signal of a medical Doppler device is sampled at a constant rate to convert the signal to digital form. The sample values are stored consecutively in a random access memory component. Such values are recalled from such component at a readout rate different from the sampling rate so as to create a frequency-shifted intermediate broadband signal corresponding to the Doppler output signal. Such intermediate signal is filtered and the power of the filtered intermediate signal is continuously compared to the power of the unfiltered intermediate signal. The readout rate from the memory component is adjusted to maintain approximately the same proportionate relationship of the power of the filtered intermediate signal to the power of the unfiltered intermediate signal. The continuously adjusted readout rate from the memory component indicates a "band edge" frequency above or below which a preselected proportion of the total power of the Doppler signal resides.

Abstract: Low temperature impact properties of poly(vinyl chloride) are improved by adding to the poly(vinyl chloride) chlorosulfonated polyethylene and chlorinated polyethylene wherein the base polyethylene of each additive has a density of at least 0.94. The use of all three components provides a synergistic lowering of the brittleness temperature as compared to either chlorosulfonated polyethylene or chlorinated polyethylene when added to the poly(vinyl chloride).

Abstract: Vinyl ether monomers of the formula ##STR1## wherein n is 0 or 1 and R is CH.sub.3 or C.sub.2 H.sub.5, precursors thereto, and copolymers with, e.g., tetrafluoroethylene, are provided. The copolymers are useful as electrical insulation and as the sheath portion of optical fibers, and can be converted to known ion exchange polymers having carboxylic groups which are useful, e.g., in the form of permionic membrane for separating the compartments of a chloralkali cell. The vinyl ether monomers can also be converted to vinyl ether monomers which contain carboxylate functional groups, which in turn can be copolymerized to useful copolymers.

Abstract: Counter-rotating intermeshing rotors are employed to generate films of viscous material to enhance processing. The rotors are configured that they trap viscous material in open-ended chambers defined by the rotor surfaces. As rotation proceeds the chambers decrease in volume and the material is expelled through the ends of the chambers as a film. Longitudinally adjacent rotors each have a different angular orientation about their centers of rotation to provide a sawtooth stepped helix to convey material longitudinally.

Abstract: A blend of an E/X/Y copolymer, where E is ethylene, X is a vinyl ester, and Y is carbon monoxide or sulfur dioxide, with a polymer of vinyl halide or vinylidene halide is foamed and cured by dispersing in the blend a blowing agent and sulfur or a sulfur-releasing agent and heating the blend containing those additives at 100.degree.-180.degree. C. for a sufficient time to produce curing and foaming. This process can be run either continuously or batchwise in conventional equipment under conventional conditions in the presence of air. Plasticizers and other materials which often interfere with peroxide cures can be present in the process of this invention. The foamed and cured products have excellent physical properties and ozone resistance.

Abstract: The improvement in a tow delivery apparatus downstream of a crimper of a jet device mounted in the laydown spout of the apparatus in the path of the tow. The jet is operated to tension and forward tow through the spout only during startup of the crimper when operating speed is reached at startup the jet is inactivated.

Abstract: A power-driven, wheeled vehicle which interacts semiautomatically with winders in a spinning area to doff completed yarn packages, automatically delivers the packages to an unload station to unload the packages from the vehicle and then moves to another winder to repeat the operation. The wheeled vehicle and the winders are located on opposite sides of a service aisle. A frame extendable and retractable across the aisle is mounted to the vehicle. The means for extending and retracting the frame includes two four-bar linkages coupled to the vehicle and the frame and to each other.

Abstract: Angiotensin converted enzyme inhibitor activity if exhibited by compounds having the formula ##STR1## and salts thereof wherein R.sub.1 is hydrogen, aryl, or heteroaryl; R.sub.2 is hydrogen, amino, alkanoylamino, arylcarbonylamino, or heteroarylcarbonylamino;R.sub.3 is hydrogen, alkyl, or aminoalkyl;R.sub.4 and R.sub.5 are the same or different and each is hydrogen, alkyl, halogen, aryl, arylalkyl, hydroxy, alkoxy, alkylthio, aryloxy, arylthio, or cycloalkyl, or R.sub.4 and R.sub.5 taken together are oxo, ethylenedithio or propylenedithio;one of R.sub.6 and R.sub.7 is ##STR2## and the other is hydrogen, alkyl or arylalkyl; R.sub.8 is hydrogen, alkl or aryl;R.sub.9 is hydrogen or alkyl;n is 0 or an integer of 1 to 8;m is 0 or 1; andA is --(CH.sub.2).sub.p --wherein p is 0 or 1, --NH--, or --O--.

Abstract: 2-Pyridylcarboxamides are provided having the structure ##STR1## wherein n is 1 to 10; R is hydrogen, lower alkyl, alkali metal or an amine salt; andR.sup.1 is C.sub.6 -C.sub.20 alkyl, C.sub.6 -C.sub.20 alkenyl, C.sub.6 to C.sub.20 alkoxy or phenyl. These compounds are useful as inhibitors of arachidonic acid release and as such are useful as antiallergy agents.

Abstract: Photopolymerizable crystalline composition having a crystallinity index of at least 0.2 which comprises: (a) at least one ethylenically unsaturated monomer, (b) at least one photoinitiator, (c) at least one acidic polymeric binder and (d) a crystalline matrix forming compound having a melting point of 50.degree. to 200.degree. C. The compositions are useful in film form as photoresists, litho films, etc.

Abstract: This invention relates to a novel class of sulfonamides and their use as herbicides and plant growth regulants.

Abstract: 7-Oxabicycloheptane substituted thio prostaglandin analogs are provided having the structural formula ##STR1## wherein R is hydrogen, lower alkyl or alkali metal, R.sup.1 is lower alkyl, arylalkyl, aryl, cycloalkyl or cycloalkylalkyl, X is O, S or NH, A is --CH.dbd.CH-- or --(CH.sub.2).sub.2, p is 0 to 4, n is 1 to 4, n' is 0 to 2, q is 1 to 4 and m is 0 to 8, and including all stereoisomers thereof.The compounds are cardiovascular agents useful, for example, in the treatment of thrombolytic disease; and are antiinflammatory agents useful, for example, in the treatment of rheumatoid arthritis.

Abstract: In a chain-driven comb head for drawing frames, of the type including means for directing compressed air jets at the combs, these means comprise ducts for supplying compressed air to each needle field defined by the combs and slots for generating, from the supplied air, at least one flat jet of compressed air directed outwardly in a predetermined direction which does not intersect the zone of treatment of the sliver between the combs. During movement of the combs, the flat jet of compressed air flows successively over the surfaces of the combs to clean them. The needle-carrying bars making up the combs are rotatably mounted about their axes and have one end out of alignment, the head structure including at least two tracks engaged by the non-aligned ends and shaped so as to cause the combs to orient themselves in a predetermined direction when they pass in front of the flat jet.

Abstract: A coating composition in which the binder contains the following:(1) an acrylic polymer having pendent hydroxyl containing ester groups of ester group A of the formula ##STR1## and ester group (B) which is either ##STR2## or wherein R.sup.1 is a saturated hydrocarbon group having 2-4 carbon atoms, R.sup.2 is a tertiary hydrocarbon group having 8 through 10 carbon atoms; and(2) an aliphatic, aromatic or cycloaliphatic polyisocyanate;The composition can be used as an unpigmented clear finish or can contain convention pigments and be used as a colored finish. The composition is useful for refinishing trucks and automobiles and as an original finish for trucks, automobiles, boats, outdoor equipment and the like since the resulting finish in glossy, durable and weatherable.