baber/WOPTO huggingface dataset:
Patent ES-298007-A1 (ES)
Title: Electric motors for example for driving industrial trucks
IPC: B60L11/18
Filed: 1964-03-25
Abstract: A traction motor, e.g. for a battery-powered truck, is controlled by energizing at least its field by pulses, the "mark/space" ratio of which.is adjustable. As shown, the armature 1 and field 13 have separate pulse generators 3, 5 comprising thyristors triggered by transistor oscillator circuits 9, 7, but the armature may alternatively be energized through starting resistors. A manual control potentiometer 8 first increases the mean value of the armature current with full field, and then proceeds to weaken the field by increasing the " off" period between pulses which also are shortened a diode 6 ensures current continuity through the field but the mean value is reduced. The ratio of armature current to field current is detected by a circuit 10 by comparing the voltage drop across resistors 2, 4 and if this become excessive (due to increased load) the manual control is overridden to increase the field strength. Movement of control 8 back to a lower speed increases the field strength, thus causing regenerative braking the resultant reversal of armature current through resistor 2 is detected by a device 11, which then keeps the armature circuit closed even when the controller is returned to " off," until the braking current drops to a predetermined value. Pulse circuits are described (Fig. 2, not shown) for the armature and field supply respectively, each of which comprises a thyristor triggered by a transistor oscillator circuit, the thyristors being switched off by the discharge of a capacitor which is effected by the firing of further thyristors, themselves controlled by transistor oscillators. The arrangement is such that variation of a voltage by control potentiometer 8 causes " on " pulses to be lengthened and simultaneously " off" pulses to be shortened and vice-versa. The thyristor controlling the armature current is short-circuited by a relay before field weakening commences. In a separate embodiment (Fig. 3, not shown) a single pulsing circuit is permanently in series with the field, and for initial acceleration the armature is also connected in series. When maximum speed under these conditions is reached, further movement of the controller puts the armature in shunt across field and pulse circuit, the pulse rate progressively reducing with controller movement to weaken the field. As before, too high an armature current/field current ratio automatically adjusts the pulse rate to strengthen the field, and regenerative braking is provided for. If, during slowing, the motor is still regenerating when the controller reaches the point at which change-over to series connection would occur, this is delayed by a transistor energized relay which keeps the motor shunt connected until regeneration current is low. If the controller is returned to " off " a resistor is placed across the armature to give rheostatic braking.
Patent ES-306506-A1 (ES)
Title: Cartridge ramming device for introducing cartridges into the cartridgechamber of the barrel of a gun
IPC: F41A9/42
Filed: 1964-11-27
Abstract: A cartridge ramming device for introducing cartridges into the breech of an automatic gun comprises a rammer member 2 having a ramming dent 1 pivoted at 15 thereto and biased by a spring 18 into an active position (as shown) wherein it engages the base of a cartridge to feed it into the breech on forward movement of the member 2. A cam 20 pivoted on a shaft 21 on which is also pivoted rammer dent actuating means 24 controls the positioning of the dent 1. The parts are in the position shown on forward movement of the member 2 so that the dent 1 can engage a cartridge. An abutment 29 is provided on the gun and the lever 24 rides over this on forward movement, being displaced through an angle less than that required to move the dent from the active position. However, on the return movement of the member 2 the lever 24 is caught by the abutment 29 and is rotated about pivot 21 to cause cam 20 to rotate and pivot the dent upwardly into an inactive position wherein it is clear of the path taken by an ejected cartridge case. The latter when it has passed the dent 1 actuates the lever 24 to return it to a position wherein cam 20 permits the spring 18 to return the dent 1 into the active position ready for the next forward movement. The member 2 in the form of a trolley is guided by wheels 3 engaging in grooves 4 in a reciprocating rammer member 8. The latter has pulleys 9 over which pass a chain 10 secured to a stationary lug 12 of the gun and the trolley 2 so that as the member 8 reciprocates under the action of piston motor 5 the trolley 2 will also reciprocate but at twice the speed.
Patent ES-341363-A1 (ES)
Title: A double twist spindle
IPC: D01H1/18
Filed: 1967-06-03
Abstract: A double twist spindle for twisting a number of yarns 22 drawn off overhead from at least two draw-off bobbins 2, 3 mounted one above each other in a stationary bobbin carrier 1 comprises a hollow holder 4 for carrying the tubular cores 5, 6 of the bobbins so that the holder can be inserted into or doffed from the spindle with the bobbins as a unit. Holder 4 may have a flange 7 to support the tubular cores or. Fig. 2, not shown, the holder may have a ball catch at its lower end to engage grooves in the inside of the cores so that the holder can be inserted in the cores from above: an internal manually operable sleeve carying a ball engaging cone is provided by which the ball catch can be released to remove the cores. The holder is provided with a gripping portion 8 and a guide tube 17. In other forms tube 17 is fixed to the central spindle or it is made removable from the top of the holder, so that one guide tube only is necessary for each spindle. Elastic means 23 or notched means may be provided to temporarily secure the loose ends of the bobbins. The holder may be extended at its upper end and provided with a scale and be linked to the yarn brake in the spindle so that an indication of the yarn brake setting is given. The yarn brake may be mounted in the top of the holder and be removable for adjustment when the bobbins are in the spindle.
Patent ES-345974-A1 (ES)
Title: Fluid springs
IPC: B60G11/26
Filed: 1967-10-11
Abstract: A vehicle suspension system incorporates fluid springs of the rolling diaphragm type in which the tendency of such springs to undergo unsprung lateral displacement is avoided by the expedient of fitting an elastomeric O-ring in the spring chamber in contact with the diaphragm and surrounding its operating plunger (see Division F2). In Fig. 3, a public transport vehicle has its rear axle supported by a pair of rigid beams 64 each of which is fitted with a fluid spring 67 of this form. The front axle is supported by a pair of trailing links 72 each fitted with one such spring 80. The fluid (gas or liquid) for all these springs may be derived from a common source (not shown) to which they are all connected through suitable valves, e.g. to constitute a self-levelling system.
Patent ES-350356-A1 (ES)
Title: Direct pressure leaching of copper-iron sulphides
IPC: C22B3/04
Filed: 1968-02-10
Abstract: Complex copper-iron bearing sulphides, particularly chalcopyrite, ground to at least 90 percent minus 325 mesh standard Tyler screen are leached in aqueous sulphuric acid solution containing less acid than that required to combine with the copper content of the sulphides as copper sulphate. Leaching is continued at a temperature within the range of 210 DEG F. to 250 DEG F. under an oxygen partial pressure above 100 p.s.i. until all the acid is consumed and the iron content of the solution is lowered to an acceptable level.
Patent ES-350673-A1 (ES)
Title: Method of construction of tunnel lining
IPC: E21D11/10
Filed: 1968-02-08
Abstract: In a process for lining a tunnel using concrete mix inserted around a tunnel shell 7, the mix is subjected to a first compaction by jacks 5 as tunnel shield 1 and cutting head 2 advances, and to a second (higher) compaction by the jacks after the cutting action of the head has been halted.
Patent ES-360559-A1 (ES)
Title: Safety device for variable pitch propellers
IPC: B63H3/08
Filed: 1968-11-22
Abstract: In an hydraulically operated variable pitch propeller 1 having a piston and cylinder arrangement 7, the piston 11 is connected to a pull-rod acted upon by an auxiliary hydraulic motor, having a piston 25, through a lost-motion connection 39. If the hydraulic system fails, pressure fluid is admitted to the auxiliary motor via connection 29 to pull the blades into the " fullahead " position. The pressure pipes for the piston and cylinder 7 may be used as the pullrod.
Patent ES-364055-A1 (ES)
Title: Method for adding metal to molten metal baths
IPC: C21C7/00
Filed: 1969-02-25
Abstract: An agent for making additions of alloying metals to molten Al baths consists of a blended mixture comprising, by weight, 10-90% of finely divided Al and 10-90% of finely divided Mn, Cr, W, Mo, Ti, V, Fe, Co, Cu, Ni, Nb, Ta, Zr, Hf and/or Ag or alloy containing at least 50% of one or more thereof. The agent may be used in the form of pressed compacts or pellets, or uncompacted mixtures wrapped in metal foil or in consumable containers.
Patent ES-364845-A1 (ES)
Title: Synthesis of n:n{40 -distributed bipyridylium salts
IPC: C07D213/22
Filed: 1969-03-15
Abstract: A process for the production of a 1,11 -disubsti - tuted-4,41-bipyridylium salt comprises reducing an N-substituted pyridinium salt having in the 4-position a substituent which is a good leaving group and which is capable of forming a stable anion. The reduction may be carried out by means of a reducing agent or by controlled potential electrolysis in the presence of a polar solvent such as water or acetonitrile. 1,11-Dimethyl-4,41-bipyridylium salt is prepared in the examples.
Patent ES-375466-A1 (ES)
Title: Container filling means
IPC: F16K1/30
Filed: 1970-01-15
Abstract: A filling device on a container for filling the same with a liquid gas comprises two parts adapted to be coupled to each other, the first of these parts being secured to the container and provided with two check valves having distinct flow paths which begin within the container at a certain level in the upper portion thereof. The second of said two parts comprises means for opening both check valves when the two parts are coupled together, and two separate passageways for liquid gas forming continuations of said two distinct flow paths, the first of said passageways being controlled by a valve which is responsive to the presence of liquid gas in the passageway and the second passageway being adapted for connection to a supply conduit for liquid gas. The first passageway may be connected to a suction pump whereby liquid gas is drawn through said supply conduit and the second passageway into the container until said valve responsive to the presence of liquid gas closes the connection of the first passageway with the suction pump.
Patent ES-398102-A1 (ES)
Title: Process for the manufacture of a highly resilient and pliant expandable band
IPC: A44C5/04
Filed: 1971-12-18
Abstract: A process for the manufacture of a highly resilient and pliant expandable band, characterized in that an annealed resilient metallic wire is wound repeatedly and continuously into a band-shaped or endless structure composed of a series of closely adjacent coils having the same number of turns, for each coil, so that every other coil is wound from top to bottom or vice versa and the interposed coil between such every other coil is wound from bottom to top or vice versa the structure thus obtained is then subjected to a compressive force from its periphery wedge pins are then inserted into any desirable coils and trimmed in their shape and the overall structure is then subjected to quenching treatment from a high temperature.
Patent ES-398655-A1 (ES)
Title: Arrangement in feet for leg prostheses
IPC: A61F2/60
Filed: 1972-01-07
Abstract: An artificial leg for above-knee amputees comprising a thigh section, a shank section and a knee joint connecting the thigh and shank sections. The shank section is formed with an ankle to which a foot section is pivotally mounted by means of a horizontal shaft in said ankle. A mechanism is provided to bring about control over the shank section motions during swing and stance phases, said mechanism being housed in a shell-shaped calf section constituting a part of the shank. The improved alignment provided by the artificial leg in accordance with the invention is obtained by positioning the horizontal ankle shaft ahead of the weight supporting line passing through the thigh section, the knee joint shaft, and the ankle and by articulating the lower end of the ankle which is shaped as a plate, to a plate arranged on the foot section by means of the horizontal shaft, in addition to which a resilient means is provided behind said horizontal shaft between the foot and ankle plates for forcing the plates apart.
Patent ES-405244-A1 (ES)
Title: Glass sheet drawing method and apparatus
IPC: C03B15/02
Filed: 1972-07-14
Abstract: A method and apparatus for improving the quality of glass produced by drawing a ribbon of glass from a molten glass bath through a drawing chamber, by producing a flow of gas in the chamber and around the ribbon so as to cause the gas to repeatedly traverse at least one closed circuit extending through a region opposite at least one of the two outer thirds of the ribbon width.
Patent ES-408215-A1 (ES)
Title: Texturized staple fiber structures
IPC: D02G1/02
Filed: 1972-11-03
Abstract: Method and means for forming continuously by high-twisting a bundle of endless filaments, and grinding or cutting same while in the high-twisted state. The high-twisted bundle may be heat set before or after the grinding or cutting action, or not at all.
Patent ES-411960-A1 (ES)
Title: Process for the production of pourable, powdery, filler-containing rubber mixtures from rubber solutions
IPC: C08J3/215
Filed: 1973-02-23
Abstract: Pourable, discrete, finely-divided, tack-free elastomer particles, preferably containing filler, are prepared from an aqueous elastomer emulsion comprising an elastomer dissolved in a volatile inert organic solvent having an emulsifying amount of an alkylamine or alkenylamine oxyalkylate surfactant and an aqueous suspension of a filler, which process comprises gradually adding the filler-containing aqueous elastomer emulsion into a hot aqueous precipitating bath maintained at a pH of 7 or less, and simultaneously evaporating the organic solvent to obtain a precipitate of particles in water, separating therefrom and drying to produce the said pourable filler-containing elastomer particles. The pourable particles are particularly suitable in vulcanization processes to form shaped objects.
Patent ES-416543-A1 (ES)
Title: Servo steering device, especially for automobiles
IPC: B62D5/093
Filed: 1973-07-03
Abstract: A hydrostatic servo operated steering system having primary and shunt motors connected to the steering linkage under control of steering wheel and pressure operated valves to effect a change in steering effort in order to meet changes in load or resistance. A shuttle valve responsive to a pressure differential between the output of the engine driven servo pump and the pressure applied to the primary servo motor, controls supply of operating pressure medium to the shunt motor from either the servo motor or the steering wheel actuated control pump in the event the servo pump fails.
Patent ES-419206-A1 (ES)
Title: Tempering glass sheets
IPC: F25D1/00
Filed: 1973-09-29
Abstract: Apparatus for tempering glass sheets comprising means for moving a pair of spaced, opposing plenum chambers in unison in either of two mutually perpendicular directions such as vertically or horizontally reciprocating paths or in closed orbital motion while imparting tempering fluid against the opposite surfaces of a glass sheet supported in the space between the opposing plenum chambers through nozzles extending from the plenum chamber.
Patent ES-437701-A1 (ES)
Title: Particulate transfer control device
IPC: B24C7/00
Filed: 1975-05-14
Abstract: The invention pertains to control means for apparatus for pneumatic transfer of a particulate material of the type having an air flow-way intersected by a particulate flow-way. The control means includes respective closure means for the air flow-way and particulate flow-way and a fluid-actuated sequencing mechanism for sequentially operating the closure means. When both closure means are open, the sequencing mechanism may be operated by a single control to cause closing of the particulate flow-way first, followed by closing of the air flow-way.
Patent ES-444327-A1 (ES)
Title: Strap dispenser for automatic strapping machine
IPC: B65H16/04
Filed: 1976-01-15
Abstract: A strap dispenser for a strapping machine includes a dancer arm connected to a double acting pneumatic cylinder assembly wherein the piston has a rod end and a larger area piston end. Air under the same pressure is applied to both ends before strap feeding begins and during the time that the strapping machine is reversed to withdraw strap from the machine. The resultant differential pressure retracts the dancer arm with the assistance of a relatively weak spring. During strap feeding both ends of the cylinder are exhausted, the piston end exhausting through an adjustable throttle valve. This provides a passive resistance to advance of the dancer arm as the strap reel is being accelerated during the strap feeding operation.
Patent ES-446046-A1 (ES)
Title: Fissionable mass storage device
IPC: G21C19/40
Filed: 1976-03-13
Abstract: An apparatus for the safe storage of a plurality of fissionable masses including an array of discrete neutron absorbing shields which utilizes the principle of the neutron trap to reduce the multiplication factor of the storage array to a subcritical value when immersed in a neutron moderating medium. Each discrete neutron absorbing shield is designed to perimetrically encircle each of the stored fissionable masses. Each shield is spaced such that the encircled fissionable mass is spaced from the next adjacent neutron absorbing shield by a distance determined by the enrichment of the fissionable masses and attenuation of the moderating medium.
Patent ES-450507-A1 (ES)
Title: 3-iminoalkyl-2(1h)-pyridones
IPC: A61K31/4418
Filed: 1976-08-05
Abstract: The compounds of the formulae Ia and Ib < IMAGE > in which the symbols have the meanings given in Claim 1 are suitable as starting materials for pharmaceutically active substances. They are obtained by reacting a compound of the formula II with a compound of the formula III as defined in Claim 1 or by oxidation of a compound of the formula Ib as defined in Claim 2 and obtained in this way.
Patent ES-451847-A1 (ES)
Title: Closed loop control system for hydrostatic transmission
IPC: F16H61/46
Filed: 1976-09-24
Abstract: A hydrostatic transmission for accelerating, driving and braking a high inertia load, such as the swing mechanism of a power shovel or crane, includes an engine-driven swashplate-type variable displacement constant speed reversible main hydraulic pump coupled in a closed loop circuit to a swashplate-type fixed displacement variable speed reversible hydraulic motor. A pair of control lever operated pilot pressure modulated pump displacement control valves selectively direct control fluid from an engine-driven fixed displacement constant speed charge pump to the stroking pistons of the servo control cylinders on the main pump to thereby control motor direction and speed. The charge pump also supplies replenishing fluid to the main pump/motor circuit through replenishing check valves. A network of three flow control valves is connected across the main pump/motor circuit and to the charge pump outlet to measure the fluid pressure drop across the motor and thus provide a torque feedback signal to modulate the control valves and thereby maintain maximum motor torque for the control lever position selected. A balancing signal is also transmitted from the charge pump to further modulate the control valves and thereby render them insensitive to variations in charge pump pressure appearing in the torque feedback signal.
Patent ES-453442-A1 (ES)
Title: Test strip for the detection of occult blood in excreta
IPC: G01N33/50
Filed: 1976-11-18
Abstract: A test strip for detecting the presence of occult blood in excreta such as urine or feces or body fluid, which strip comprises a bibulous or porous material impregnated with a chromogen, a hydroperoxide and, as a sensitizer, a thiazole compound of the formula: < IMAGE > wherein R1 is a lower alkyl a substituted or unsubstituted aralkenyl, or a substituted or unsubstituted aralkyl R2 and R3 are each a hydrogen or a lower alkyl and R2 and R3, when taken together with the adjacent carbon atoms, may form a benzene ring.
Patent ES-453751-A1 (ES)
Title: Apparatus for and method of separating droplets of a liquid from a gas
IPC: B01D45/12
Filed: 1976-11-29
Abstract: This invention relates to the separation of droplets of a liquid (such as a washing liquid) from a gas, in which a stream of gas is conducted along a broad-fronted arcuate path, defined by interior and exterior walls, liquid droplets impinging upon the exterior wall and being directed through slits provided in said exterior wall. Flow of gas into, through and from the part-annular chamber defined by said walls is substantially in directions lying in planes, extending at right-angles to the longitudinal axis of the chamber with little or no movement in the longitudinal direction.
Patent ES-456418-A1 (ES)
Title: Method and apparatus for locating improperly positioned or bent rolls
IPC: B22D11/20
Filed: 1977-03-01
Abstract: A method and apparatus for locating improperly positioned or bent rolls among a set of rolls which define a confined path of travel for a workpiece, particularly useful for checking a straight or curved roll-rack of a continuous-casting machine. The apparatus may be propelled through the path defined by the rolls by any suitable mechanism. For example, as applied to a roll-rack, the apparatus may be attached to the upper end of a starter bar and propelled with the bar through the rack, or the apparatus may be suspended from a hoist and pulled through the rack. The apparatus includes a housing and means within the housing for measuring the gap between work-engaging faces of the rolls and/or, when used with a curved roll-rack, means for measuring the angular relation of adjacent bottom rolls. The latter measurement is used in determining whether the work-engaging faces lie on arcs of the intended radii. Bent rolls are located by observing different measurements when the apparatus is moved in opposite directions through the path of travel.
Patent ES-460981-A1 (ES)
Title: Contacting overlapped cutting discs
IPC: B26D7/26
Filed: 1977-07-22
Abstract: In a cutting device of the shearing type comprising two circular blades one of which is in the form of an elastic disc displaceable on a bracket by pressure from a pressure element engaged by a lever, the cutting edge of said blade in the form of an elastic disc being disposed against the cutting edge of the other blade, the improvement wherein said bracket is disposed within a bearing sleeve which in turn is disposed within a bearing of said disc, said bearing sleeve being connected to said lever in an axially inflexible manner, said pressure element disposed adjacent to the cutting area of said blade in the form of an elastic disc and passing a moment into said bearing sleeve and said bearing which is opposed to the moment of any reaction force imposed on said disc in its cutting area.