baber/WOPTO huggingface dataset:
Patent GB-262889-A (GB)
Title: Improvements in or relating to means for operating brakes on vehicles
IPC: B61H13/00
Filed: 1925-10-09
Abstract: 262,889. Hodges, M. H., Hodges, W. S. H., and Hodges, A. J. M. Oct. 9, 1925. Fluid - pressure; hand actuation.-The piston rod o of a. steam-operated brake is extended out of the top of the cylinder f and is threaded to receive an internally - threaded handwheel q adapted to be screwed down on the top of the cylinder to apply the brake or to hold it in operation. A pin fitted through a cross-head p in the piston rod projects through slots in the side of the cylinder and carries rods t for actuating the brakes. Steam is admitted to and exhausted from the brake cylinder by separate pipes z, y and separate valves in a two-chamber control block. The cylinder may be mounted vertically on a transverse member of the vehicle frame at the back of the driver's seat.
Patent GB-478015-A (GB)
Title: Improvements in or relating to superheterodyne wireless receivers
IPC: H03D7/06
Filed: 1936-09-11
Abstract: 478,015. Valve circuits for wireless reception. RUDKIN, E. P. Sept. 11, 1936, No. 25305. [Class 40 (v)] In a superheterodyne receiver using a multigrid frequency changer reaction at signal frequency is employed from the output of the frequency changer to the signal tuned circuit. The valve may be a tetrode, pentode, hexode, heptode or octode 'and a separate oscillator may be provided which may be a triode in the envelope of the frequency changer valve. In the case of a pentode frequency changer with the local oscillation injected into the cathode circuit an auxiliary valve may be used to provide reaction, Fig. 6 (not shown). Any electrode, an auxiliary anode, or any combination of electrodes may be used as the output electrode for reaction which may be applied directly, or shunt fed or may be to a tapping on the tuned input circuit. A high frequency amplifier may precede the frequency changer to which it may be aperiodically coupled, in which case reaction is applied to the tuned input of the high frequency amplifier. The Figure shows an arrangement in which reaction is taken from a screen grid 16 and is maintained constant throughout the tuning range by choice of the condenser 18 and the coil 3 and the provision of resistance 5 and condenser 6. Overloading is prevented by controlling the input as by a series condenser in the aerial circuit. Radiation of local oscillations may be avoided by an auxiliary coupling of the oscillator to the aerial to balance the energy at this frequency fed through the mixing circuit, Fig. 3 (not shown). Specification 447,117 is referred to.
Patent GB-727276-A (GB)
Title: Polysulphones
IPC: C08G75/22
Filed: 1952-10-09
Abstract: In the preparation of polysulphones by copolymerizing sulphur dioxide with an olefinic compound, the compound, at a temperature at which it is in the liquid phase and in admixture with an initiator, is gradually added to a molar excess of liquid sulphur dioxide through which is bubbled an inert gas such as nitrogen. The sulphur dioxide may be cooled to - 20 DEG  to - 60 DEG  C., and may be used in proportions of from 5 to 20 mols. per mol. of olefinic compound. Specified olefinic compounds which may be used singly or in admixture are allyl and methallyl alcohols, allyl and vinyl chlorides, butene-1 or -2, isobutene, propylene, cyclohexene and pentene-1 or -2. Suitable initiators are cumene, t.-butyl and t.-butyl isopropylbenzene hydroperoxides.  Examples describe the preparation of polysulphones from mixtures of (1) allyl chloride and isobutene; (2) methallyl alcohol and isobutene; (3) isobutene and butene-2; (4) methallyl alcohol and butene-2; (5) methallyl alcohol and allyl chloride; and in (6) and (7) from methallyl alcohol alone.  The time of addition of the olefinic monomers ranges up to 50 minutes and the products may be soluble in sulphuric acid.
Patent GB-1221290-A (GB)
Title: Coating compositions
IPC: C08L101/00
Filed: 1969-05-19
Abstract: 1,221,290. Heat sealable polyethylene compositions. MONSANTO CO. 19 May, 1969 [21 May, 1968], No. 25369/69. Heading C3P. [Also in Division B2] A heat-sealable composition comprises, by weight, 5-30% of a petroleum wax, 40-90% of an ethylene/vinyl acetate copolymer, comprising 15-30% of vinyl acetate and 70-85% ethylene, and 5-30% of a free-radical-produced branched polyethylene containing at least 98% ethylene. The composition may also contain a linear polyethylene. The composition is prepared by melting the copolymer and the polyethylene at 120-140 C. to form a polymeric melt, maintaining the melt at the above temperature for 2-60 minutes, adding the petroleum wax to the melt and agitating for 2-60 minutes.
Patent GB-146763-A (GB)
Title: Improvements in jointing metallic sheathed electric cables
IPC: H02G15/105
Filed: 1919-10-17
Abstract: 146,763. Wilson, A. E., and Callender's Cable & Construction Co. Oct. 17, 1919. Sleeve couplings.-In plumbed sleeve joints for lead-covered cables, lead rings are employed as foundations for the lead sleeve which are capable of being fixed to the lead covering of the cables without solder, and have means whereby their correct position is indicated. The lead ring c, Figs. 1 and 4, has a saw cut sleeve projection f which may be bound to the cable by wire h or secured by a clamp j, and projections k which in conjunction with the trimmed end of. the lead covering serve to position the ring. A modified ring with interior clamping means comprising a divided projection s and screws t is shown in Fig. 8, the inner end of the projection s acting as the positioning means. The lead sleeve d is beaten down on to the rings c and plumbed joints are made over the sleeve and rings.
Patent GB-737242-A (GB)
Title: Process of increasing the physical stability of aqueous suspensions of penicillin compounds
Inventor: PETERSEN KARL
IPC: A61K31/43
Filed: 1953-09-16
Abstract: The physical stability of aqueous suspensions of penicillin compounds is improved by removing the atmospheric oxygen from the unfilled space in the containers in which the suspensions are stored, before, during or after the suspensions are filled into these containers. The air may be replaced by an inert gas such as nitrogen, hydrogen, carbon dioxide or the rare gases such as helium and argon, or mixtures thereof especially mixtures of hydrogen and nitrogen. Penicillin compounds specified are procaine penicillin; N : N-dibenzyl-ethylene diamine penicillin; oxyprocaine penicillin; 2 - chloro - procaine penicillin and hydroiodide of diethylamino ethyl ester.
Patent GB-1468899-A (GB)
Title: Power supply circuit
IPC: H04B1/16
Filed: 1974-06-10
Abstract: 1468899 AC/DC power supply circuits; converting smoothing; pulsating currents NIPPON ELECTRIC CO Ltd and HITACHI Ltd 10 June 1974 [11 June 1973] 25653/74 Headings H2H and H2F A power supply circuit comprises an A.C. power supply, a D.C. power supply, a rectifier circuit 4 and an active filter circuit 7 including series connected resistors 16, 17, a transistor 16 being connected in parallel with the resistor 18 and being switched off when the A.C. supply is connected to the circuit but being switched on when the D.C. supply is connected to the circuit. The circuit supplies smoothed D.C. to a load 11  such as a television receiver and when a plug 1 connected to the A.C. supply is inserted in a socket 2, leads 6, 9 are interconnected. The voltage at the base of the transistor 18 is less than its emitter voltage so that the transistor is non-conductive and the voltage between the input and output terminals of the filter circuit 7 equals the voltage across the resistors 16, 17 due to the base current of the transistor 13 plus the base-emitter voltage of the transistor 13. When the D.C. supply is connected to the circuit via a plug 12 and the socket 2, the leads 6, 9 are not interconnected and the transistor 18 conducts so that the inter-terminal voltage of the filter 7 is determined by the voltage across the resistor 17. By reducing the inter-terminal voltage of the filter unnecessary power consumption of the D.C. supply is avoided. In a modification, Fig. 3 (not shown), regulation of the voltage across the load is provided.
Patent GB-1004783-A (GB)
Title: Helicopter control mechanism
IPC: B64C27/32
Filed: 1962-07-04
Abstract: 1,004,783. Electromagnetic disc brakes. KAMAN AIRCRAFT CORPORATION. July 4, 1962 [Oct. 9, 1961], No. 25667/62. Heading F2E. [Also in Division B7] A control stick 10 in a helicopter, is pivoted about axis 14 against the resistance of a disc brake 44 which is connected to collar 16, Fig. 1, by levers 60, 58, shaft 54, a gear train, and shaft 50, Fig. 5. Discs 76 are keyed to a ring 74 on shaft 50 and to a ring 72 fixed to a coil carrying member 64; bolts 82 passing through slots in ring 72, connect back plate 80 to the movable armature 78. The coil 68 is connected through a potentiometer to a pilot switch and is engergized to apply the brake. The potentiometer 90, Figs. 1, 2, connected to stick 10, is operated from a rotatable sleeve 96 through a gear 92 whereby the voltage and hence the braking force can be adjusted. A member 98 rotatable with gear 92 has a stem 100 screwthreaded into a cap 102 which is held fixed by a friction ring 106 in engagement with casing 88; a further ring 104 is compressed as sleeve 96 and hence member 98 is turned to increase the effect of brake 44, to increase the resistance on sleeve 96 to provide " feel " for the adjustment of sleeve 96. The cap 102 can be turned by the pilot whilst holding sleeve 96 to adjust the initial resitance imposed by ring 104.
Patent GB-1037759-A (GB)
Title: Apparatus for culturing microorganisms
IPC: C12M1/12
Filed: 1965-06-17
Abstract: <PICT:1037759/C6-C7/1> Apparatus for the prolonged or continuous cultivation of micro-organisms includes a closed outer envelope 10 and an inner envelope 12 formed of an elongated semi-permeable tubular membrane. If the micro-organisms and a suitable carrier liquid are contained in the inner envelope, then culture medium in the outer envelope dialyses through the membrane to the carrier liquid in the inner envelope 12 and waste products from the micro-organisms are dialysed through the membrane into the culture medium. Toxins produced by the micro-organisms do not dialyse through the membrane and are periodically or continuously drawn off with the micro-organisms and separated from them in known manner. The culture of micro-organisms may be injected into the carrier liquid through a hypodermic syringe. The outer envelope may be fabricated in polyethylene, polyvinylchloride and copolymers thereof, polypropylene, tetrafluoroethylene or tetrafluorochloroethylene. Sheets of polyethylene and polypropylene 0.002 inch thick will transmit oxygen and are therefore suitable for the cultivation of aerobic micro-organisms. Sheets 0.006 inch in thickness (or laminates of thinner sheets), being air impervious, are suitable for anaerobic cultivations.  A desired air permeability may be achieved by the use of an air permeable sheet for one side of the envelope and an air impermeable sheet for the other.  For the inner envelope 12 there may be employed natural sausage casing from the intestines of hogs, sheep and other animals, synthetic sausage casings made of regenerated cellulose, parchment or collodion. Suitable carrier liquids for the micro-organisms during their cultivation are distilled water, saline solution, sodium citrate solution and culture medium. Dialysable nutrient substances are mentioned. The term micro-organisms includes bacteria (specified), yeast and moulds.  Examples are directed to (1) the anaerobic cultivation of Clostridium tetani the aerobic cultivation of Corynebacterium diphtheriae and the aerobic growth and sporulation of Bacillus stearothermophilus. The outer envelope 10 of the apparatus used was 14 inches long, 17 inches high and 2 inches wide.
Patent GB-1255916-A (GB)
Title: Improvements in printed circuits
Inventor: WILSON GORDON HUGH
IPC: H05K1/11
Filed: 1970-05-28
Abstract: 1,255,916. Printed circuits. STANDARD TELEPHONES & CABLES Ltd. 28 May, 1970, No. 25795/70. Heading H1R. An electrical circuit arrangement comprises electrically conductive paths 22 on a non- conductive base, with apertures 21 extending through the conductive paths and base positioned to receive electrical leads of components, with parts 23 of the circuit arrangement adjacent to one or more of the apertures being adapted for removal from the remainder of the circuit arrangement to facilitate removal of soldered components. The parts may be adapted for removal by punching out portions such as the shaded parts on Figs. 2, A-E, and then retaining them as an interference fit. Alternatively, they may be attached by small ears, such as at 26 in Fig. 2, C, or they may be incompletely punched, thus leaving a thin skin securing the portion. The portion may be removed by supplying an aperture such as 26 in Fig. 2, C; 24 in Fig. 2, D, the unshaded parts of the circles in Fig. 2, B and 2, C, and the unshaded part of the rectangle in Fig. 2, E, into which a tool, such as a screwdriver, may be inserted to prise the shaded portions out. By removing these portions prior to desoldering a faulty component, the leads may be desoldered one at a time, thus avoiding overheating of the circuit board, and damage to the leads.
Patent GB-190557-A (GB)
Title: Improvements in or connected with inking-apparatus for printing machinery
IPC: B41F31/15
Filed: 1921-09-30
Abstract: 190,557. Wilson, H. W. V., and Victory- Kidder Printing Machine Co., Ltd. Sept. 30, 1921. Inking - apparatus. - In printing-machine inking-apparatus, the distributing-rollers are reciprocated by means of studs carried by cam-operated bolts which are slidably mounted in sleeve bearings on a frame on the inside of the machine frame. The cam 11 between the distributing-cylinder 2 and the machine frame 1 is rotated from the shaft 3 of the distributing-cylinder at a slower speed by means of gearing 15. 16, 18, 19. The groove 12 of the cam 11 engages bowls 13 on pins or studs carried by bolts 10 sliding in sleeves 22 on a frame 23. and pins 9 having bowls 8 on their other ends engaging between flanges 7 on the shafts 5 of the distributing rollers 4. Jumping of the latter in their open bearings 6, Fig. 3, is prevented by providing pieces 26, 26<x>, pivoted on pins 27, the longer piece 26 having a concave face to engage the shaft 5 and another concave face adapted to ha engaged by a concave part of the piece 26<x> for locking the longer piece in contact with the shaft.
Patent GB-296791-A (GB)
IPC: F04C2/18
Filed: 1928-09-08
Abstract: 296,791. McIntyre, F. Sept. 8, 1927, [Convention date]. Roots' blower type.-Relates to pumps for metering cellulosic solutions to be spun into artificial silk. The casing comprises two end plates 5, 6 and a centre plate of hard steel having circular cavities in which the pumping gear wheels 8, 9 are received. Wear plates 13, 14 of hard steel may be recessed into the inner surfaces of the end plates. The end plates are positioned by dowel pins 46, 47 and are secured by screws 48 The gears 8, 9 are keyed upon spindles 21, 22 which are mounted in the end plates, the latter preferably being bushed with metal impregnated with a large quantity of graphite. Sufficient clearance is left between the spindles and their bearings and between the gears and the casing to permit of a slight but continuous flow for lubricating purposes of the solution being pumped, and the ends of the spindle bearings are formed with scraping edges to prevent solidification there of the exuding solution. Small lateral recesses may be provided in the side plates to prevent trapping of the solution in the tooth spaces, or, as shown in Fig. 6, adjacent tooth spaces are connected by passages 42 in the bases of the teeth. The external driving wheel 27 is secured to an anti-friction sleeve 28 running on a boss 29 and is coupled to the spindle 21 by a bridge-piece 33 and a coupler 30 having tongue-and-slot connections with the bridge-piece and the spindle. The parts exposed to the solution may be made of alloy steels which the solutions do not corrode or they may be plated with chromium.
Patent GB-1167246-A (GB)
Title: Improvements in or relating to Underground Mine Roadways
Inventor: PEAKE CECIL VOWIE
IPC: E21F17/107
Filed: 1967-06-06
Abstract: 1,167,246. Mine stoppings. CAMUS M.FG. CHEMICAL CO. Ltd. 22 May, 1968 [6 June, 1967], No. 25953/67. Heading E1F. A dam for an underground mine roadway comprises partitions 4, 5 longitudinally spaced and transversely disposed of the roadway. The partitions are formed of a rigid, plastics foam that is impermeable to mine gases. Extending through the partitions is an airlock pipe 7 for permitting men to pass through the dam and a small bore pipe 8 for gas testing beyond the dam. The partitions can be directly sealed to the wall of the roadway or the dam can be sealed to the wall by fluid filling the compartment 6 between the partitions 4, 5. This fluid may also serve as a coolant to the dam. The partition 4 nearest a working face at the end of the roadway is comparatively thin when compared to the thickness of the other partition.
Patent GB-880888-A (GB)
Title: Changeable display sign
IPC: G09F11/02
Filed: 1959-07-29
Abstract: 880,888. Changing signs. HALPERIN, J. S. July 29, 1959 [May 21, 1959], No. 25988/59. Class 3(1). In a changing sign of the interleaved slat. type one set of slats 41 are hingedly connected to a removable reciprocating base panel whilst the second set of slats 42 are held stationary by means of extensions 43 removably engaging pockets 26 formed in the frame of the sign. The base panel is mounted on rods 32 which are reciprocated by an electric motor, see Fig. 5 (not shown). The slats are made of cardboard and may each bear a part of an indicia or a single indicia.
Patent GB-889056-A (GB)
Title: Automatic braking of the load in ward-leonard drives
Inventor: MILLER GEORGE BERTRAM
IPC: B66C15/00
Filed: 1959-07-30
Abstract: 889,056. Control of motors. ASSOCIATED ELECTRICAL INDUSTRIES Ltd. July 5, 1960 [July 30, 1959], No. 26195/59. Class 38 (3). A mechanical emergency brake on the Ward- Leonard controlled hoist motor 3 of a gantry crane is held off by a solenoid 6 which is energized in response to and A.C. signal induced in the motor supply trolley wires 5 by a transformer 11 close to the generator 2 and detected by a second transformer 12 mounted close to the motor 3. The transformer 11 is fed from an oscillator 10 supplied from the same source as the motor 1 of the set; the solenoid 6 is separately supplied through trolley wires 7. The brake is thus operated (by spring or gravity) in the event of failure of power to either the motor 1 or the solenoid 6, or lack of continuity in the line to the hoist motor 3.
Patent GB-705036-A (GB)
Title: Improvements relating to electrostatic precipitators
IPC: B03C3/011
Filed: 1951-11-09
Abstract: 705,036. Electrostatic filters. HEINRICH, R. F. Nov. 9, 1951, No. 26270/51. Class 39(1) In an electrostatic precipitator in which each collecting electrode varies in length, in the direction of gas flow, across the precipi tator chamber, a gas distribute is arranged at the entrance to the chamber so as to ensure that each portion of the gas is in the collec ting field for the same length o time. As shown, each collecting electrode is composed of shoots 3 inclined towards the centre of the chamber and fitting into a pair of walls forming a central channel for receiving the dust. A corru gated sheet 4 fills the space above the shoot. The walls forming the central channel 5 may be provided with dust catch pockets. The size of the apertures in the gas distributer plate 1 are arranged to supplement the natural tendency of the gas to flow with a higher velocity through the centre of the precipitator than at the sides. The gas may be admitted to the chamber from both sides. In another embodiment, Fig. 1 (not shown), the collecting electrodes are composed of inclined shoots extending right across the chamber.
Patent GB-826802-A (GB)
Title: Improvements in or relating to the manufacture of thermionic cathodes
Inventor: WILLCOX JOHN EDMUND
IPC: H01J9/04
Filed: 1957-08-20
Abstract: 826,802. Cathode materials and processing. MULLARD Ltd. Aug. 20, 1958 [Aug. 20, 1957], No. 26281/57. Class 39(1). [Also in Group XXXVI] A cathode is provided with a coating of emissive material by making a suspension of the material in a binder solution, forming the suspension into a layer, drying said layer to produce a film, forming a cathode with a rough surface, and compressing the film onto said surface. The film may be adhered to the cathode by the "wrapping" technique described in Specification 717,231. The cathode may be roughened in various ways, such as electroplating a spongy deposit thereon, or etching with ferric chloride, or applying a powdered layer and sintering. Examples of each of these methods are given, and also examples of the preparation of the emissive material. After application to the cathode, the material is compressed between plates or rollers, and a mandrel may be inserted inside the cathode. The binder is removed by heating in a reducing atmosphere, after which the coating may be compressed again, or further material applied and compressed.
Patent GB-184720-A (GB)
Title: Improvements in splash guards for the wheels of vehicles
IPC: B60B7/00
Filed: 1921-10-05
Abstract: 184,720. Caldwell, W. J., and Faraday, H. Oct. 5, 1921. Mud-guards rotating with wheels consist of a ring or tube A of rubber or other flexible material mounted on ring segments B<1> connected by leaf springs b and each supported by telescopic spokes C, C<1> radiating from a central member C<3> parallel to the plane of the wheel and collapsable against the action of springs C<2>. The outer part C of the spokes is preferably made adjustable in length and works in a slot b<1> of the ring segment against a stop b<2> to permit the inward movement of the segment. A cover for the device consists of segments of flexible material E connected at their outer edges to metal strips a and at their inner edges to metal segments F secured to a metal ring G mounted on the part C<3>. Adjustment is provided for by slots f in the plate G. The device is screwed or otherwise secured on the wheel hub d or an extension thereof.