baber/WOPTO huggingface dataset:
Patent GB-1353059-A (GB)
Title: Semiconductor switching circuit arrangement
IPC: H03K3/02
Filed: 1971-04-19
Abstract: 1353059 Semi-conductor switching circuits LICENTIA PATENT-VERWALTUNGS GmbH 19 April 1971 [29 April 1970] 25884/71 Heading H3T [Also in Division H1] In a circuit arrangement including a semiconductor device 3 without a barrier layer which has a low resistance state and a high resistance state and which is capable of storing energy which is not sufficient to switch the device from the high to the low resistance state further energy supplied to the device in conjunction with the stored energy switches the semi-conductor device from the high resistance state to the low resistance state and means is provided for supplying the energy to the device in the form of pulses and comprises means for varying the pulse frequency and/or pulse amplitude and/or the pulse duration of the pulses. Energy is provided to the device which is less than the energy required for switching the device, in an energy free state, from the high to the low resistance state but which is sufficient to switch the device from the high to the low resistance state provided energy has previously been stored in the device. The energy previously stored depends on the frequency, the pulse duration and the pulse amplitude of the preceding applied energy. If a pulse (Fig. 2a, not shown) is applied to the device so that sufficient energy is stored in the device after a time (t 1 , Fig. 2b, not shown) the device switches from the high to the low resistance state. In the AND circuit shown pulses E 1  are insufficient to switch the device 3. If now a pulse E 2  is supplied of sufficient amplitude to switch the device from the high to the low resistance state this results in storage of excess energy in the device so as to maintain the device in the low resistance state during the following pules E 1 . The output at A corresponds to an Eg pulse followed by the E 1  pulses (Fig. 4c, not shown). The circuit may be used as intermediate stores in computers or may be used for counting functions where the device becomes conductive when a certain stored number is reached.  The devices may be chalcogenide glasses or may have tellurium-arsenic-germanium-silicon layers of the following mixture 50, 20, 12 and 8 atoms per cent respectively with active glass layers 1 Ám thick. Molybdenum, tungsten and carbon may be used as electrodes for the devices.
Patent GB-935429-A (GB)
Title: New pharmacologically active 2, 5-disubstituted pyrrolidines
Inventor: CIGNARELLA GIORGIO
Filed: 1960-07-26
Abstract: The invention comprises: bases of the general formula <FORM:0935429/IV(a)/1> (wherein R represents a hydrogen atom, an alkyl group, or an aralkyl group optionally halogen substituted, and R1 and R11 each represent a halogen atom or a carbamyloxy or aralkylamino group) and their non-toxic acid addition salts; the preparation of the bases by reducing a compound of the general formula <FORM:0935429/IV(a)/2> (wherein X and Y are the same or different and each represent an ethoxy or aralkylamino group) with lithium aluminium hydride in an inert anhydrous organic solvent, and, when either or each of X and Y represents an ethoxy group, treating the resulting mono- or bis-hydroxymethyl compound with thionyl chloride or an alkali metal cyanate; and therapeutic compositions comprising not less than 5% of one of the bases or salts and a pharmaceutical carrier.  1-Methyl- and 1-benzyl-2-benzylcarbamyl-5-carbethoxypyrrolidine (formula B, R=CH3 or C6H5CH2, X=C6H5CH2NH, Y=C2H5O) are prepared by refluxing 1-methyl- or 1-benzyl-2,5-dicarbethoxypyrrolidine with benzylamine in xylene. 2,5- (Bis-(N- benzylcarbamyl)- pyrrolidine (formula B, R=H, X=Y=C6H5CH2NH) is prepared by reacting 2,5-dicarbethoxypyrrolidine with excess of benzylamine.  1-Benzyl-2,5-dicarbethoxypyrrolidine is prepared by reacting diethyl a ,d -dibromoadipate with benzylamine in benzene solution.  The therapeutic compositions, which have adrenolytic, hypotensive and vasodilator activity, may be in dosage unit form using a solid carrier or a sterile parenteral liquid.
Patent GB-467828-A (GB)
Title: A positive electrode for galvanic cells
IPC: H01M12/02
Filed: 1935-09-19
Abstract: 467,828. Batteries. PERTRIX CHEMISCHE FABRIK AKT.-GES. Sept. 19, 1935, No. 25981. Convention date, Aug. 15. [Class 53] A positive electrode for an air depolarized cell contains solid salammoniac or an organic ammonia derivative such as monoethylaminochlorhydrate to the extent of at least thirty grams of the salt to a hundred cubic centimetres of the electrode. The negative electrode may consist of zinc and the electrolyte may contain salts of zinc and manganese.
Patent GB-467225-A (GB)
Title: A burner for heavy oils
IPC: F23D11/08
Filed: 1936-09-26
Abstract: 467,225. Gear pumps. SOC. POUR LE PERFECTIONNEMENT DE LA CHAUFFERIE. Sept. 26, 1936, No. 26170.Convention date, Sept. 27, 1935. [Class 110 (ii)] [Also in Group XI] Liquid-fuel is supplied to a burner by a pump comprising two meshing gears 26, 27 arranged in a casing formed with supply and delivery conduits 33, 34, and a third gear 25 which is rotatable in an incomplete eccentric sleeve 30. By means of a lever 32 the sleeve 30 can be rotated to cause the gear 25 to mesh with the gear 26 to a varying extent and the fuel delivery regulated.
Patent GB-532782-A (GB)
Title: Improvements in holders for electro-mechanical resonators
IPC: H03H9/09
Filed: 1939-09-20
Abstract: 532,782. Piezo-electric crystal mountings. GENERAL ELECTRIC CO., Ltd., and CLARK, F. Sept. 20, 1939, No. 26221. [Class 40 (v)] A piezo-electric crystal plate 1 is mounted between the conical ends of metal cylinders 3, 4 which are a sliding fit in holes in a disc 2 of low-loss insulating material. Pressure is maintained on the crystal by means of forked springy conductor strips 9, 10 which engage the reduced ends 5, 6 of the cylinders 3, 4 and which are adjustable by means of screws 14. The free ends of strips 9, 10 are formed as soldering tags. The faces of the crystal are metal coated, and one face has a conical hole to assist in locating the crystal.
Patent GB-190567-A (GB)
Title: Improvements in ventilating and air purifying apparatus
IPC: F24F6/06
Filed: 1921-10-05
Abstract: 190,567. Smethurst, H. Oct. 5, 1921. Air, treating; fans, ar. rangements of.- Apparatus for washing and purify. ing air for ventilation comprises a receptacle a fot water or disinfectant, having a draw-off fitting b and carrying a footstep bearing c, which may be secured to a removable portion a<1> of the base. The bearing c supports an inverted hollow conical member d in which are one or more holes h through which the liquid passes into the cone, which is rotated by a motor g, causing the liquid to travel up the inner surface and be thrown off at i in the form of a water screen. A scoop h' is provided over each hole h. A series of holes or a spiral slot may be made in the cone to form several sprays or water screens. A fan f forces air downwardly through the water in the conduit formed by a cylindrical member j, the air being delivered at the lower end of the apparatus which may be provided with vanes q to direct the air. Liquid travelling down the cylinder j is caught in an annular trough k and returned by one or more pipes m to the receptacle a. A pipe coil t for heating or cooling purposes may be provided. A gauze cylinder n surrounding the lower end of cone filters the water entering the cone, and limits the area of disturbance of the water in the receptacle a.
Patent GB-1445422-A (GB)
Title: Blade holder for use when sharpening and/or honing
IPC: B24B41/06
Filed: 1973-06-01
Abstract: 1445422 Sharpening cutting edges STANLEY TOOLS Ltd 20 May 1974 [1 June 1973] 26353/73 Heading B3D A holder for use when sharpening and/or honing a blade 50 comprises a frame 20A, Figs. 1 and 2, at least one roller 30A mounted on or in the frame so that the holder can be run along a surface, and a clamp 41A for clamping the blade to the frame so that the blade can be engaged with an abrasive surface upon moving the frame along the first-mentioned surface, which may be the abrasive surface or a different surface, the blade being held at an acute angle to the abrasive surface to form a sharp edge 51, Fig. 4, between a front face 501 and an underneath face 50<SP>11</SP> of the blade, the clamp pressing the front face of the blade against a locating surface formed by part of the frame so that the blade angle is dependent on the length of a portion of the blade projecting from the frame and is independent of the thickness of the blade. The frame consists of a front plate 22A having side portions between which is a shaft 21. A pair of rollers 30A are rotatably mounted on the shaft and are maintained selectively close together or spaced apart by spring-loaded detents 31. Screws 42A extend through screw-threaded bores in the shaft 21 and are connected to the clamp 41A by nylon bushes 44 engaging recesses 45. The clamp is wedge-shaped and guided for movement in the frame by projections 43B engaging slots 23B in the side portions of the frame so as to hold the blade against the plate 20A. The portion of the blade projecting from the frame can be set according to written instructions or a gauge 60A to determine the angle the blade makes with the abrasive surface. In other embodiments, the holder has a single roller, the screws are formed with necks engaged by a cross-member on the clamp, and the slots in the side portions of the frame are inclined to the axes of the screws. The gauge 60A may be moved about a pivot 61A to a stored position, and a bracket 80, Fig. 10, has projections 81, 82, 83 for receiving the holder for storing, the bracket having a hole by which it can be hung up. In use, the roller or rollers may engage the abrasive surface 90 or a member 91, Fig. 13, placed on the surface.
Patent GB-737536-A (GB)
Title: Improvements in and relating to pliers, pincers, scissors and like tools
IPC: B25B7/08
Filed: 1953-09-24
Abstract: 737,536. Pivots. BERGS FABRIKS AKTIEBOLAG, E. A. Sept. 24, 1953 [Sept. 2, 1953], No. 26390/53. Class 65(2). [Also in Groups XIV and XXIII] In box jointed pliers, scissors and like tools, the handle portion 1 has a circular recess 10 the inner portion of which carries an integral, upstanding pivot stud 3, the outer portion 12 of the recess being adapted to receive a cover plate 4. The inner handle 2 has a partly circular part that fits in the recess 10 and a concentric hole to fit the pivot stud 2. The cover plate is fitted into the recess 10 and secured in position as by welding at 5, 6. In a modification a longer pivot stud is provided, a recess to accommodate it being provided in the under side of the plate 4.
Patent GB-760934-A (GB)
Title: Packaging
IPC: A23C19/16
Filed: 1953-09-25
Abstract: Foodstuffs, e.g. lettuce, steak, sausages and cheese, that to be kept in good condition need to be protected against undue lack of moisture but without exclusion of air are packaged in a covering made from a foil having a basis of a water-insoluble polymer of an alpha, beta - olefinic monocarboxylic acid amide containing (apart from nitrogen and oxygen) only carbon and hydrogen, the covering serving to prolong the useful life of the foodstuff.  The foils are preferably made from copolymers of the above amides and acrylonitrile.
Patent GB-172431-A (GB)
Title: An amusement apparatus
IPC: A63G7/00
Filed: 1920-09-16
Abstract: 172,431. Moore, H. B. Sept. 16, 1920. Railways for recreation. -An amusement apparatus comprises a series of oppositely - inclined tracks or rails disposed one below the other each track commencing at the termination of the preceding one and the ends being interconnected by switch mechanisms so that a trolly carrying passengers is transferred from one track to another. In the form shown in Fig. 1, the trolly 2, on arriving at the lower end of a track, strikes a buffer 5, and by its weight depresses a pivoted switch 3 forming part of the track. The .switch descends into alignment with the second track 1, down which the trolly then runs and so on until the trolly reaches the end of the lowest track, from whence it is raised to the highest track by a chain 8. The switches may be secured by locking-bolts which are released by the trolly. In a modification, Fig. 2, the trolly is transferred from one track to another by automatic switch points 11 of known type, the momentum of the trolly being arrested by an upward sweep at the ends of the tracks. Reference has been directed by the Comptroller to Specification 18418/09.
Patent GB-786817-A (GB)
Title: Improvements in and relating to apparatus for the measurement of magnetic flux
Inventor: COTTON HARRY
IPC: G01R33/028
Filed: 1955-09-16
Abstract: 786,817. Flux meters. BRUSH ELECTRICAL ENGINEERING CO., Ltd. Sept. 16, 1965, No. 26532/55. Class 37. Apparatus for the measurement of magnetic flux comprises a narrow probe composed of a central conductor member disposed between and laterally displaceable in relation to two outer conductor members. As shown, probe g, Fig. 3, inserted in test flux Hy, Fig. 1, consists of a central conductor c and fixed outer conductors a. A steady current Iz in central conductor c produces a field which interacts with test flux Hy to cause deflection of central conductor c. As shown in Fig. 4, the conductors a, c are encircled by an insulating sheath hand are mutually separated by insulating pads i whilst an earthed screen surrounds sheath h. Also conductors a, c are suitably connected to a supply circuit via double screened leads e, Fig. 3, so that with c earthed and fixed at both ends force Fx produces curvature deflection of c and thus change in capacitance of outer conductors a to earth. The change in capacitance is measured by an electronic circuit (not shown) and depends on the value of the applied field Hy and direction of motion of inner member c so that in one position a capacitance meter has a maximum reading and when probe g is rotated from this position through 90 degrees the reading is a minimum; thus by suitable calibration and orientation probe g will detect the value and direction of the flux. The measuring circuit may comprise an oscillograph which indicates transient or periodic variations in flux Hy.
Patent GB-720581-A (GB)
Title: Improvements in or relating to the manufacture of sacks or bags of paper, transparent thin film, or like material
Inventor: SCHEER RENE
IPC: B31B37/00
Filed: 1952-10-23
Abstract: 720,581. Making bags. ATELIERS DE CONSTRUCTIONS MECANIQUES C. & A. HOLWEG SOC. AR.L. Oct. 23, 1952, No. 26617/52. Class 94 (2). In a machine for making block-bottom bags the web 1 is fed from a roll 2, through rollers 4, 5, where gum is applied to a tube forming member 6, a rotary knife 7 having a flexible blade cooperating with a fixed knife 7<SP>1</SP> to make a semi-circular cut A in the upper wall of the bag tube. A narrow flexible blade 8 enters the tube which passes between rollers 9 and 10 to rotary knives 11 which make transverse and longitudinal cuts B through both walls of the tube. The blade 8 has its end raised in front of a rocking lever 12 to lift the flap formed in the upper wall of the tube. In this way the tube is opened and the bottom formed as at C by the member 12 co-operating with a bar 13, the bags remaining joined by a strip of material on the underside. A pair of rollers 15 on oscillating arms 14 are lowered successively to ensure overlapping of the two flattened parts. Endless belts 16 then advance the tube to a rotary knife 17 which cuts the connecting strip along a slightly curved line as at E, the tube being gripped on a rotary drum 18 by a member 20, while a rotarv blade 19 marks the fold line for the leading bottom flap, gum is applied and the flap is folded over by retractable members 21 on the drum 20. The tube passes under a rotary folding blade 22 which marks the second bottom flap which is flattened by a member 23<SP>1</SP> carried by endless chains 23 at a speed greater than the peripheral speed of the drum. A projection 22<SP>1</SP> on the support for the blade 22 co-operates with a notch 18<SP>1</SP> on the drum 18 to provide a slight amount of slack in the bag blank when the blade 22 comes into contact with the tube to prevent tearing. The finished bags are flattened by a roller 24 and ejected on to a table 25.
Patent GB-663871-A (GB)
Title: Improvements in or relating to door closures for large buildings such as hangars, power houses and the like
IPC: E06B3/92
Filed: 1948-10-13
Abstract: 663,871. Sliding doors. DAVIDSON, L. Oct. 13, 1948 [Oct. 17, 1947], No. 26648/48. Class 20(iii) Doors for large buildings, e.g. hangars, power houses &c. comprise a number of leaves of different heights and supported when in closed position at different height levels. In an installation comprising leaves A<SP>1</SP> .. D on each side of the centre, the two centre doors are higher and narrower than the rest. The doors are guided at the top by the engagement of rollers 5 with the sides of rails 6 depending from canopies 1, 2, and at the bottom by flanged wheels riding on floor rails; a storage pocket 7 may be provided at each side with rows of guides 6 suspended from a frame support and may be closed when all the door leaves are out by a plate secured at right angles to the end leaf D. To support the higher leaves when removed from under their canopy 2a guide 3 is located on the adjacent lower leaf for accommodating rollers carried by brackets 4 at the same level on the higher leaf. In a modification, canopy 2 may be arranged at the same height as canopies 1 but be capable of being raised to provide a larger leaf at a later date. The middle leaf or leaves are supported similarly to the higher leaves when moved from under canopy 2. Two parallel spanning arches may be provided when several of the leaves are required to be of great height; the guides 6 and a supporting structure replacing canopies 1 for the shorter leaves are mounted between the arches. The higher leaves may be placed outside and the shorter inside the building.
Patent GB-1236458-A (GB)
Title: Process and apparatus for draw twisting yarn
IPC: D01H1/22
Filed: 1968-06-05
Abstract: 1,236,458. Draw twisting yarn. MASCHINENFABRIK RIETER A.G. 5 June, 1968 [5 June, 1967], No. 26745/68. Heading D1D. In a method of draw-twisting, the winding spindle and delivery mechanism are accelerated to production speeds in such a way that the ratio of spindle speed to delivery mechanism speed decreases. The ratio is reduced from a critical value corresponding to a critical number of turns per length in the yarn. The delivery mechanism is so accelerated over a period of the starting time that the yarn waste is reduced as compared with a method in which both production speeds are gained uniformly over the same time period. As shown in Fig. 4 the thread delivery speed VL and spindle speed Ns both increase over the period Ao such that VL/Ns is constant. After remaining constant till t 3  before NS/VL reaches the critical value K the delivery speed is again increased. After running at production speeds the apparatus is stopped in the reverse sequence. Comparative indications of wastage in prior out processes and the process of the invention are given in Figs. 2d, 4d respectively. In a modification (Fig. 6 not shown) the delivery mechanism may accelerate slowly before the ratio NS/VL is reduced. The apparatus may "creep" between stopping and starting periods. The spindle and delivery mechanism may be driven from individual motors or a common motor, and the initial acceleration of the delivery mechanism may be performed by a motor auxiliary to its individual motor.
Patent GB-1505176-A (GB)
Title: Window comprising two movable glazed panels
IPC: E05F11/40
Filed: 1975-06-24
Abstract: 1505176 Operating vertically sliding double panel windows R F DORGAMBIDE 24 June 1975 [4 July 1974] 26756/75 Heading E2M A double panel window, in which top 2 and bottom 3 sashless glazed panels can slide vertically in guides secured to hollow vertical frame members 4, 5 is operated by means of fours cords 48, 49, 51, 65 which are attached to corner members 61 on the sashes, pass over pulleys 50g, 52g, 50d, 52d, arranged in a horizontal hollow frame member 6, and are secured to runners 46 movable up and down shafts 37 mounted in each member 4, 5 when these shafts are rotated by an external crank mechanism; each shaft 37 being rotatable in a lower bearing block 21 and an upper bearing plate 40 and carrying a pinion 35 which is engaged by a pinion 26 on a crank handle shaft 31 rotatable in the block 21. Each runner 46 has a stud 45 which engages in a helical groove on the shaft and carries a clamp 47 which receives the ends of two cords from one of the windows. Fig. 3 shows the left hand vertical member 4 which contains the operating mechanism for the lower sash 3. Cords 48 and 49 pass from the left hand clamp 47 to a left hand pair of pulleys 50g, 52g. Cord 49 passes over pulley 50g to the left hand corner of sash 3, and cord 48 passes over pulley 50g then through the member 6 to a pulley 52d of a right hand pair of pulleys 50d, 52d and then down to the right hand corner of sash 3. A similar arrangement connects the right hand clamp cords 51 and 65 to the sash 2. Fig. 4 shows the top halves of pulleys 50g, 52g and the bottom halves of pulleys 50d, 52d.
Patent GB-362859-A (GB)
Title: Improvements in or relating to optical systems for producing stereoscopic effects
IPC: G02B27/22
Filed: 1930-09-08
Abstract: 362,859. Reflectors; projection screens. KOEGEL, G., 9, Hebelweg, Baden-Baden, Germany. Sept. 8, 1930, No. 26777. Drawings to Specification. [Class 97 (i).] A device intended for producing stereoscopic or relief effects comprises a concave reflector provided with a number of parallel reflecting grooves separated by ribs having concave reflecting surfaces. A second series of parallel reflecting grooves may be provided at right-angles to the first series. The device may be used for viewing pictures &c. by reflection or for receiving projected light.
Patent GB-339289-A (GB)
Title: Improvements in automatic regulator systems for electric circuits
IPC: G05B11/01
Filed: 1929-09-03
Abstract: 339,289. Somerville, T. B., and Associated Electrical Industries, Ltd. Sept. 3, 1929. Regulation, automatic. - Apparatus for " cutting out " a faulty automatic regulator and allowing continued running of the generator affected with a pre-determined field resistance in circuit comprises a repeating relay 7. energized in the same manner as the regulator, and a cut-out relay 6, as shown in Figs. 1 and 2. As shown in Fig. 1, the repeating relay 7 has a time-lag and cuts out the regulator 6 when this is functioning incorrectly, in which case the field resistance is not shortcircuited on " low volts " and current is flowing through resistance 29. The contact 26 on the repeating relay 7 makes contact with terminal 27 on high volts and terminal 26 on low volts. In one case coil 32 and in the other coil 33 is energized, and circuit is closed at 36 to allow the coil 37 to operate and release the trip lever 39, which then moves over to the contact 42 and inserts a variable amount of the field resistance 5 into circuit. A. hand-operated switch 43 controls the field resistance after the regulator is cut out. An under-volts relay 47 operates to energize solenoid 37 on failure of voltage. In Fig. 2 a polarized relay 51 completes the circuit of coil 37 of the cut out relay when the regulator is working incorrectly. Two sets of windings 52, 53-54, 55 are wound so that the windings in each set are in opposition and the sets connected in parallel. On high voltage floating contact 26, permanently connected to the common point of resistance 5 and field winding 4, makes contact with terminal 27. Coils 54 and 55 will balance, but if the voltage across the exciter field 4 exceeds that across the field resistance 5 the current in winding 53 will be greater than that in winding 52, and contacts 50 will close to energize solenoid 37 and cut out the regulator. Similarly on low volts if the voltage across the resistance 5 is greater than the voltage across the field winding 4 the current in winding 54 will exceed that in winding 55 and solenoid 37 will be energized.