baber/WOPTO huggingface dataset:
Patent GB-769007-A (GB)
Title: Improvements in powder filled, high voltage electric cartridge fuses and fuse assemblies
Inventor: DANNENBERG KURT
IPC: H01H85/042
Filed: 1954-01-18
Abstract: 769,007. Fusible cut-outs. E.M.P. ELECTRIC, Ltd. Dec. 23, 1954 [Jan. 18, 1954], No. 1436/54. Class 38 (1). A powder-filled current - limiting cartridge fuse for high and medium voltages comprises three elements 14, 13, 12 in parallel which are arranged to fuse successively by providing ceramic beads 15 on different length notches on the elements, the notches on element 14 being the longest so that this element fuses first. This arrangement is stated to prevent high surge voltages on blowing of the fuse. A tungsten wire 17 is connected between a point on the element 12 and a device as described in Specification 713,663 for operating an indicator or trip device. A slidable plunger 19 normally held in position by spring- pressed ball 21 punctures the end cap 6 due to exploding of a small charge 20 on heating of the wire 17, which may also be coiled to act as a spring. The elements are wound on a ceramic core 8 and connection between the elements and end cap is made by metal sleeves 9 and 10, a wedge 11 within sleeve 10 ensuring good connection between end cap 6 and sleeve 9. In another embodiment (Figs. 2 and 3, not shown), each element is wound on a separate former, the former all being contained in one casing while in yet another embodiment (Fig. 4) the elements are wound on separate formers in separate casings 52, 53, 54, and connected together by bars 25 having contacts 26 cooperating with fixed contacts 27. An indicator device 18-21 is provided. The fuses may be released manually by pulling a ring 34 which lifts a release lever 33 which frees the fuses and allows them to pivot about a pin 31 on lower contact 25 in a hook 30 provided on the contact 27. For automatic isolation, the device 18-21 would be at the top of the cartridge 52 and the plunger would lift the lever 33 on overload.
Patent GB-588435-A (GB)
Title: Improvements in or relating to sheet material comprising polyvinyl chloride compositions
IPC: D06M15/244
Filed: 1944-01-26
Abstract: Coated fabrics (see Group VIII) are made by applying to a substrate a paste of ungelatinised polyvinyl chloride dispersed without the use of heat or pressure in a medium comprising a plasticiser capable of gelatinising the polymer and a volatile partial solvent and heating the coated material to evaporate the solvent and gelatinise the polyvinyl chloride.  The volatile partial solvent is one or more compounds of b.p. not exceeding 180 DEG  C. capable of swelling the polyvinyl chloride on heating and dissolving less than 3 1/4 per cent of polymer at room temperature.  Specified are fatty acid esters, ketones and polychloro-aliphatic hydrocarbons, e.g. acetic esters of cyclohexanol, of ethylene glycol monomethyl and monoethyl ethers and of aliphatic alcohols having 3-6 carbon atoms, acetone, methyl ethyl ketone, cyclohexanone, carbon tetrachloride, trichlorethylene and tetrachlorethane; diluents, e.g. benzene and alcohol may also be added.  If desired, the coating may be heated only sufficiently for the coated substrate to be handled without damage, a further coating of polyvinyl chloride paste applied and the material heated to effect fusion of the surface.
Patent GB-1092439-A (GB)
Title: Pulse generator
Inventor: GELEYNSE MAARTEN
IPC: H03K17/73
Filed: 1966-01-12
Abstract: 1,092,439. Semi-conductor pulse generating circuits. BARRINGER RESEARCH Ltd. Jan. 12, 1966, No. 1506/66. Heading H3T. In a circuit, particularly for feeding spaced half-sine pulses to the transmitting loop 12 of a geophysical prospecting apparatus, a capacitor 10 is alternately charged and discharged via the loop 12 so that the energy stored in capacitor 10 during one pulse is added to the next pulse. As shown, capacitor 10 is first charged by triggering thyristors 15, 16 from transformer 25, the thyristors becoming non-conductive after one half cycle at the natural frequency of details 10, 12. After a predetermined interval, thyristors 17, 18 are triggered from transformer 26 giving a half-cycle of current of opposite polarity. The oscillatory circuit 10, 11, 12 is under-critically damped so that the current pulses only reach a maximum equilibrium voltage after several cycles. The triggering pulses for transformers 25, 26 may be derived from 250 c/s. multivibrator 21 via a frequency divider 22 and differentiating amplifiers 23, 24. Uni-polar pulses may be obtained by connecting the transmitting loop 12 in series with the fuse 14. In Fig. 5 (not shown), the four thyristors are arranged in a bridge having the supply 13 connected across one diagonal and capacitor 10 connected across the other. The transmitting loop is sequentially connected across capacitor 10 via one (or two oppositely directed) thyristors.
Patent GB-1569427-A (GB)
Title: Manufacture of semi-synthetic penicillin antibiotics
IPC: C07D499/28
Filed: 1977-01-14
Abstract: In the synthesis of penicillin antibiotics by silylation of the carboxyl and, where appropriate, of the amino group of 6-aminopenicillanic acid, acylation with an acid chloride or protected acid chloride and subsequent elimination of the silyl groups, the silylation stage is carried out in an inert solvent using a compound of the formula: R<1>R<2>N-COR<3>   (I)  or  R<1>N=C(OR<2>)R<3>   (II> and in this way improved. A compound of the formula: <IMAGE> is formed and is, without isolation, reacted with the acid chloride or protected acid chloride. The meaning of the symbols is given in Claim 1.
Patent GB-561449-A (GB)
Title: Improvements in or relating to knitted gloves
IPC: A41D19/00
Filed: 1943-02-02
Abstract: 561,449. Knitted gloves. SCHUESSLER, C. F. Feb. 2, 1943, No. 1705. Convention date, Jan. 17, 1942. Drawings to Specification. [Class 141] A knitted glove has the inner surface of the thumb, fingers, and hand portion, or any one of these, of closely knit stitches, and the corresponding back portion of relatively loosely knit stitches. The roots of the fingers and thumb may have at least one row of loosely knit stitches to provide flexibility at the juncture with the body portion.
Patent GB-141819-A (GB)
Title: Improvements in the manufacture of neutral sulphate of ammonia
IPC: C01C1/249
Filed: 1919-01-23
Abstract: The acid usually present in ammonium sulphate is removed by washing the sulphate at a raised temperature with a solution of ammonia obtained by condensing the vapours from a fixed ammonia still and diluting the solution thus obtained to such a strength that, at the temperature at which it is to be used, the vapour pressure of the ammonia is too low to entail substantial loss of ammonia.  By washing at a raised temperature, chilling of the ammonium sulphate crystals, which might lead to the choking of the centrifugal, is avoided.  A suitable diluent for the ammonia solution is obtained by subjecting the hot waste liquor from the fixed ammonia still to a slightly reduced pressure, and condensing at a suitable temperature the mixture of steam and ammonia withdrawn.
Patent GB-171960-A (GB)
Title: Securing device for protecting auto-cars against theft
IPC: B60R25/04
Filed: 1921-01-11
Abstract: 171,960. Malzoff, H., (Assignee of Romeiser, W., and Schiff, L.). Nov. 24, 1920, [Convention date]. Addition to 158,239. Guarding against unauthorized use.-In a device for preventing unauthorized use of motor road vehicles as described in the parent Specification, the ignition apparatus is rendered inoperative whenever the steering-wheel is disengaged from the steering-column. In the position shown, a rotatable bolt 12 on the hub of the wheel projects into a groove 10 in a sleeve 21 keyed to the steering-column, the steering-wheel being disengaged but not removable from the steering-column. Conductors 30, 31 connected to the ends of the primary coil of the magneto are led to the steering-column 1 and a flexible conductor 32, respectively. The flexible conductor is connected to a pin 37 secured to a metal ring 36 embedded in an insulating ring 35. This ring is carried by a flange 33 formed with a boss 34 containing but insulated from the pin 37. A ring 41 pivoted at 42 in the sleeve 21 carries a pin 43 and a rivet 44, and a spring 45 normally presses the pin into contact with the metal ring 36, thereby completing the circuit and short-circuiting the primary coil of the magneto. When the bolt 12 is rotated to enter the groove 11 in order to engage the steering-wheel with the steering- column it engages the bolt-head 44, tilts the ring 41, and breaks the circuit through the conductors 30, 31 permitting the magneto to function.
Patent GB-523990-A (GB)
Title: Improvements in or relating to aircraft braking devices
IPC: C04B28/14
Filed: 1939-01-18
Abstract: 523,990. Aerodynamic brakes. DORNIER-WERKE GES., and DORNIER, C. Jan. 18, 1939, Nos. 1795 and 1796. Convention dates, Jan. 29, 1938 and July 27, 1938. [Class 4] An aircraft braking device comprises flaps which are hinged at their rear ends adjacent the tail-end of the fuselage, the flaps being mounted behind the rudder and being movable into 'an open operative position or into a closed inoperative position against the fuselage by means disposed inside the fuselage and operable by the pilot. Fig. 5 shows radially-arranged flaps 32 in operative position, the flaps being mounted on pivots 35 on the end of a rod 34 and connected by links 38 to a sleeve 37 slidable on the rod, the sleeve and rod being operable independently by the pilot to actuate the flaps. To return the flaps to inoperative position the rod 34 is moved in the direction of the arrow P so that the parts occupy the positions shown in Fig. 6, the gap between the end of the fuselage and the flaps being closed by a part-cylindrical member 36 having a tapered portion secured to the rod 34. The rod 34 and sleeve 37 are then moved simultaneously in the direction of the arrow P2, Fig. 6, so as to bring the cylindrical part of member 36 inside the fuselage. The tail-end 33 of the fuselage is carried at the end of the rod 34. The pressure of the air-stream may cause the flaps to move, if necessary, against spring pressure, into the positions shown in Figs. 5, 6 after the flaps have been initially opened slightly or the rod 34 released. In a modification radially-arranged flaps collapse to form inner and outer cups or shells on the fuselage. When collapsed the flaps may be in recesses in or form part of the fairing of the fuselage. In another construction only two symmetrically-arranged flaps are provided.
Patent GB-788171-A (GB)
Title: Improvements in or relating to sliding healds for looms
IPC: D03C9/06
Filed: 1955-01-21
Abstract: 788,171. Heald frames for looms. KERSHAW, T., and KERSHAW, J. H. Jan. 23, 1956 [Jan. 21, 1955], No. 1841/55. Class 142(2) Hooks 43 supporting the heald support bars are provided with ball or roller bearings which run in an internal track in the adjacent rail of the frame. Spring plates 41 retain the bearings in a plate 37 forming the top portion of the hook 43. A suspension hook 25, engaging an identical track in the outer edge of each of the upper and lower rails, is locked in position by a nut 31 and a plate 33. Each support bar 45. Fig. 5, is locked against endwise movement by a notch 51 in each end engaging the lower edge of a slot in a plate 49 when the plate is raised. A screw 55 locks the plate against movement. The upper and lower rails may be of metal or of wood with metal edges. Each hook 43 may have a further hook 61 thereon for the attachment of a tension wire extending between the top and bottom rails. The side rails 17 (Fig. 7) of the frame are attached to the top and bottom rails by screws 67 which engage bushes 65 in the rails.
Patent GB-1255703-A (GB)
Title: Articulated coupling
Inventor: GILSON WARREN ELLSWORTH
IPC: F16C11/04
Filed: 1969-01-13
Abstract: 1,255,703. Bracelets. W. F. GILSON AND R. E. GILSON. 13 Jan., 1969 [1 Feb., 1968], No. 1938/69. Heading A3H. [Also in Division F2] A coupling between elements 12, which may be links of a watch band, comprises a groove having lips 24B, 24C, in one member, in which is received a generally T-shaped member 26 on an adjacent member, the parts are assembled by inserting one portion 26D of the member 26 within the groove and relatively rotating the members until a portion 26B on the member 26 snaps past the lip 24B, the members preferably being made of plastics material.
Patent GB-391411-A (GB)
Title: Improvements in and relating to wireless heterodyne reception
IPC: H03D7/10
Filed: 1933-01-20
Abstract: 391,411. Valve circuits for wireless reception. SEIBT AKT.-GES., DR. G., 29, Kolonnenstrasse, Sch÷ne berg, Berlin. Jan. 20, 1933, No. 1964. Convention date, Jan. 20, 1932. [Class 40 (v).] A two-grid combined oscillating and detecting valve 7 for supersonic heterodyne reception has an oscillatory circuit 1, tuned to the received frequency, between the control grid and the cathode lead, and a circuit 2, tuned to the local frequency, between the screening grid or the anode and the cathode lead, and an oscillatory circuit 3, tuned to the intermediate frequency, is in the common lead to the cathode. The circuit 2 is inductively coupled to a coil 13 in the anode circuit to generate the local oscillations. The valve has a large amplification factor with respect to both the controlling and screening grids, and may have an auxiliary grid in front of the anode and at the potential of the cathode. A variable condenser 8 in the circuit 2 is ganged with a condenser 6 in the circuit 1, and condensers 9, 10, 11 are trimming condensers, According to a modification, the local-frequency circuit is in the anode circuit, and the voltage of the anode is below that of the screened grid so that the valve oscillates on the negative part of its characteristic without back-coupling, Figs. 2a and 2b (not shown).
Patent GB-1163578-A (GB)
Title: Improvements in or relating to the defrosting of frozen fish
IPC: A23B4/07
Filed: 1966-01-15
Abstract: 1,163,578. Defrosting frozen fish. AFOS Ltd. and A. F. SNELLING. 14 April, 1967 [15 Jan., 1966], No. 1994/66. Heading A2D. A method of defrosting frozen fish comprises exposing the fish to a flow of warm moisture-saturated air, the direction of air flow being periodically reversed. A suitable apparatus comprises a top section 12, connected to a bottom section 10 by ducts 24, 38. The top section comprises reversible impeller 14, heaters 18, 20 and humidifiers 21, 39 and the bottom section comprises diffuser walls 26, 36 and heaters 32 and contains open-ended and opensided trolleys 30. The trolleys 30 may hold trays with or without bars arranged across them or the trolleys may contain bars positioned above the trays. The humidifiers may comprise steam injectors. The heaters may be electric or comprise tubes using hot water or steam. In use the apparatus is a closed system, the air flow is periodically reversed by control means (not shown) reversing impeller 14 and the air is only humidified by the humidifier downstream of the impeller. The air may flow from impeller 14 past heater 18 and operating humidifier 21 to duct 24, through diffuser wall 26, trolleys 30 and diffuser wall 36 to duct 38 and then past inoperative humidifier 39 and heater 20 to impeller 14. When the air flow is reversed humidifier 39 is operating and humidifier 21 is inoperative.
Patent GB-1060034-A (GB)
Title: Penicillins
Inventor: WILCOX JOHN ALAN
IPC: C07D499/00
Filed: 1965-01-18
Abstract: Alkali metal salts of a -aminobenzylpenicillin are prepared by treating the amine salt of the penicillin in organic solvent with alkali metal C3 to C5 alkoxide and recovering the salt formed; "a -aminobenzylpenicillin" includes the corresponding epimers (viz. 6-[D(-)a -aminophenyl-acetamido]- and 6 - [L(+)a aminophenylacetamido]-penicillanic acids.  The amine salt may be that of triethylamine, and solvents include polyhalogenated alkanes such as CHCl3, CH2Cl2, and C2H2Cl4.  The preferred alkoxide is sodium isopropoxide.
Patent GB-747440-A (GB)
Title: A machine tool having a selsyn control system
IPC: B23F23/02
Filed: 1954-01-25
Abstract: 747,440. Automatic speed control systems. SCHIESS AKT.-GES. Jan. 25, 1954 [Jan. 27, 1953], No. 2124/54. Drawings to Specification. Class 38 (4). To synchronize the movement of an independently driven work-table and cutting tool, an error voltage is derived for electricallyconnected Selsyns driven from the table and the tool-drive motor, and this error voltage is used to control either the tool or table-drive motor through, e.g. a thyratron amplifier. A speed feed-back from a tachometer generator may be used to stabilize the control system.
Patent GB-545591-A (GB)
Title: Periodic wave repeaters
IPC: H03B19/12
Filed: 1941-02-17
Abstract: 545,591. Thermionic valve circuits ; television. HAZELTINE CORPORATION. Feb. 17, 1941, No. 2148. Convention date, Jan. 20, 1940. [Classes 40 (iii) and 40 (v)] A periodic wave repeater or amplifier adapted to be substantially insensitive to undesired pulses or entrances transients comprises an energy storage device with charging and discharging circuits each associated with a valve. One of the valves is rendered operative under the joint control of the incoming pulses and the state of charge of the storage device and the other is under the control of the pulses after passing through a delay device. Fig. 1 shows a condenser 14 discharged by a valve 10 under the control of pulses applied to the input 11 and charged through a valve 16 after a pulse from output transformer 19, 20 has passed delay circuit 17, 18. In this way the discharge of the condenser 14 blocks the valve 16 until condenser 18 is discharged when condenser 14 is rapidly charged so that pulses applied to the valve 10 are ineffective except when condenser 14 is charged. In a modification, Fig. 5, the condenser 14 is charged through.valve 10 and resistance 21 under the control of applied pulses and discharge is effected by valve 16 by the voltage across resistance 21 after passing through the delay network 22, 23. Fig. 3 (not shown) shows a further modification in which a pulse passing through a delay network is applied to the valve controlling the charging of the condenser in which the output is taken across the condenser. Specification 538,553 is referred to.
Patent GB-214010-A (GB)
Title: Improvements in and relating to electric controllers
IPC: H01H9/26
Filed: 1923-01-24
Abstract: 214,010. Electro-Mechanical Brake Co., Ltd., and Pattison, M. J. Jan. 24, 1923. Controllers, actuating. - A controller barrel for seriesparallel control of two motors is advanced intermittently by successive pressures on a pedal and is returned to zero if the pedal is allowed to rise beyond a certain distance. In the construction shown the pedal lever 2 acts through sector and pinion gearing upon a pawl 10 driving a ratchet 12 fast to the controller barrel, while a checking - pawl 14 engages with another fast ratchet 13. After each depression the pedal is lifted by a spring 6, and if allowed to rise too far takes both pawls out of engagement with the ratchet teeth by means of a stationary deflector 17 and a moving arm 18. The controller barrel is then returned to zero by a separate spring. The controller barrel is interlocked by a cam 28, Fig. 6, with a manual reversing switch 4. Means are provided for cutting out either motor at will by adjustment of the barrel relatively to its operating-handle. Specification 184,646 is referred to.
Patent GB-328235-A (GB)
Title: Improvements in or relating to rock drills and like tools
IPC: B25D9/20
Filed: 1929-01-22
Abstract: 328,235. Holman, J. L., and Holman, A. T. Jan. 22, 1929. Percussive drills.-In a distributing valve for a rock drill &c. of the type wherein a piston 11 operates on a twist bar 12 within a cylinder 10, the valve gear is situated around the twist bar in front of the ratchet gear and consists of a sleeve 20 containing ports, a valve chest 14, and a reciprocating annular " hat-shaped " valve 16. The working fluid passes through ports 23 and 24 to the annular space 26 on the rear side of the brim of the valve, and ports 25 and 27 to the front side of the brim of the valve. In the position shown the space 26 is in communication with ports 28 and 30 to the front side of the piston. During the motion of the piston the port 37 is uncovered communicating the front side of the piston to atmosphere and at this point the greater force on the front side of the brim of the valve moves it and places the rear side of the piston in communication with the working fluid through ports 27, 29 and 31. The annular crown of the valve is hollow and the space 22 is in communication with the atmosphere. The annular space 32 is connected to the working fluid and arranged as a balancing influence.
Patent GB-449453-A (GB)
Title: Improvements relating to devices for regulating or controlling the level of liquid or other flowing material
IPC: G05D9/12
Filed: 1936-01-23
Abstract: 449,453. Automatic control systems. EVERSHED & VIGNOLES, Ltd., NEEDHAM, J. C., and MARCHMENT, W. T., Acton Lane Works, Chiswick, London. Jan. 23, 1936, No. 2216. [Class 38 (iv)] Fluid level.-In apparatus for electrically emptying a container such as a sewage sump a in which a pump is driven by an electric motor g started and stopped by an electromagnetic switch d controlled by contacts which energize the switch at a predetermined level and in which a locking circuit is closed by the switch until a predetermined low level is reached, the contacts b, c, h consist of electrodes in the container which come into direct contact with the material handled by the pump. Alternating current is used in the control circuits to avoid electrolysis. One of the electrodes is preferably the suction inlet pipe of the pump. The locking circuit may comprise a separate winding on the electromagnetic switch.
Patent GB-677466-A (GB)
Title: Improvements in or relating to electrical contactors
IPC: H01H1/50
Filed: 1950-01-27
Abstract: 677,466. Electromagnetic switches; contacts. GENERAL ELECTRIC CO., Ltd., and BRYER, R. F. Jan. 2, 1951. [Jan. 27, 1950] No. 2223/50. Class 38 (v). In an electromagnetic contactor, rebound of contact is prevented by mounting the 'fixed' contact 8 on a cylindrical member 9 movable within narrow limits in a tube 10 and bearing against a series of balls 18-21 pressed lightly against it by a spring 22, the momentum of the movable contact 1 being, at impact, substantially transferred to the end ball 21. The ball 21 moves along the tube till it is brought to rest by air damping and is then gently returned by the spring 22. The small movement of the member 9 is possible owing to a rubber ring 12 which becomes compressed on impact. Specifications 468,187 and 677,465 are referred to.
Patent GB-1442957-A (GB)
Title: Furniture
IPC: A47B91/02
Filed: 1975-01-17
Abstract: 1442957 Adjustable furniture feet; separate feet G BAUKNECHT GmbH ELEKTROTECHISCHE FABRIKEN 17 Jan 1975 [29 Jan 1974] 2232/75 Headings A4H and A4U An article of furniture 14 has a base comprising height adjustable feet 1 and strips 24, 31, each foot having an upper plate 10 received in a respective receiving means 15 on the underside of the furniture article, and the strips being detachably clamped to the feet by holding means 25, 33 attached to the strips. Each holding means comprises a fixing part 28, 35 secured to the strip and one or two clamping parts 29, 37, 37' with an endpiece 30, 38, 38' for fitting tightly against the feet, the strips being vertically slideable along the feet. Each receiving means 15 comprises a contact part 17 secured to the furniture article and a C-section rail part 18 open at one side for receiving the - rectangular plate 10 on the upper part 3 of the foot, the plate having ratchet teeth (a, b) on its longitudinal sides. Each foot comprises the upper part 3 which is threaded into a lower part 2. The holding means 25 lie between the changing parts 37, 37' of the holding means 33, and the fixing parts 35 of the holding means 33 have oblong apertures 36 for height adjustment.