baber/WOPTO huggingface dataset:
Patent GB-925929-A (GB)
Title: Improvements in or relating to machines for erecting boxes and trays
IPC: B31B50/50
Filed: 1961-09-29
Abstract: 925,929. Making boxes. A. MICHELS. Sept. 29, 1961 [Oct. 12, 1960], No. 35427/61. Class 18. In a die and plunger machine for erecting box blanks having tongues and slots 3e, 3f of the kind shown in Fig. 7, a magnetic device 9 is provided to open the slots 3f. The magnet is movably mounted on the plunger 1, and normally retracted within the plunger, and is projected at the appropriate point in the operating cycle under the influence of a magnet 13 in the die so as to push out the side 3b of the blank which lies between the slots 3f, thus permitting insertion of the tongues or lugs 3e on further downward movement of the plunger. Upward movement of the magnet 9 is limited by a stop 14. When the piston reaches the bottom of die 2 spring urged rollers 15 deform the inserted lugs 3g and lock them in their slots. The device 9 may be a permanent magnet pivoted at 10 and having a counterweight 12.
Patent GB-1269645-A (GB)
Title: Improvements in or relating to dinitrophenyl esters
Inventor: PIANKA MAX
IPC: C07D213/80
Filed: 1968-07-25
Abstract: 1,269,645. Dinitrophenyl esters of dicarboxylic acids. MURPHY CHEMICAL Ltd. 1 July, 1969 [25 July, 1968], No. 35591/68. Heading C2C. The invention comprises compounds of the formula wherein A is -CH=CH- or -(CH 2 ) n -, where n is 0 or an integer from 1 to 6 and R is a cyclic or acyclic, saturated or unsaturated aliphatic group which may be substituted with one or more of the following substituents: halogen atoms, NO 2 , NH 2 , substituted amino groups, OH, COOH, carbalkoxy groups, alkoxy groups, alkylthio groups, xanthyl groups or heterocyclic groups, or R is an unsubstituted or ring-substituted heterocyclic, araliphatic or aryl group (including 2-t-butyl-4,6-dinitrophenyl, with the provisos that R is not methyl when A is -CH=CH- and R is not 2-t-butyl- 4,6-dinitrophenyl when n is 0 or 4; and their acid addition salts with inorganic or organic acids. They may be obtained by reacting 2-tbutyl-4,6-dinitrophenol or an alkali metal salt thereof with the anhydride or acid chloride of an acid of the formula RO.CO.ACOOH. Examples are given for the production of the compounds. They are useful as herbicides, insecticides, acaricides, aphicides, fungicides or nematicides. Alkyl fumaryl chlorides where alkyl is a C 2 - C 12  alkyl radical are obtained by reacting maleic anhydride and thionyl chloride with the appropriate alkanol.
Patent GB-939907-A (GB)
Title: Refrigerator
IPC: F25B1/00
Filed: 1962-09-19
Abstract: 939,907. Defrosting refrigerators. GENERAL MOTORS CORPORATION. Sept. 19, 1962 [Sept. 22, 1961], No. 35600/62. Class 29. In a refrigerator having an evaporator 36, a supply conduit 26 leading to the evaporator, and a suction conduit 28, 38, leading from the evaporator to a motorcompressor unit 20, the conduits being arranged to form a heatexchanger, the evaporator is defrosted when the temperature of the suction conduit intermediate the heat-exchanger and the motorcompressor unit falls below a predetermined value. As shown, Fig. 1, the suction conduit includes an accumulator 30 between the sections 28 and 38, a section 32 of the capillary supply. conduit 26 being in heat-exchange relationship with the accumulator 30 and with a short section of the suction conduit at either end of it, the section 32 including three passes along the length of the accumulator. A snap - acting thermo-responsive switch 58 is mounted on the suction conduit 28 just downstream of the heat-exchange portion by means of a spring clip. The electric power supply to the motor compressor unit 20 and a defrost heater 86 on the evaporator 36 passes from a supply connection 125, Fig. 3, through the thermal switch 58, so that if the temperature of the suction conduit 28 falls below - 1‹ F., the bi-metallic disc 84 in switch 58 causes the defrost heater 86 to be energized and the motor-compressor circuit to be de-energized. When, after defrosting, the suction conduit rises to a temperature of 81.2‹ F. the switch 58 is reset to a position energizing the motor compressor circuit. A timer 131 acting on a switch 123 may be included to give regular defrosting independently of the suction conduit temperature. The motors 42 arid 54 of fans blowing air over the evaporator and a condenser 24 respectively, are connected in parallel with the motor compressor unit 20, the normal running of these motors being controlled by a thermal switch 52, the bulb 50 of which is mounted adjacent the evaporator 36.
Patent GB-407793-A (GB)
Title: Improvements relating to electric switches or circuit interrupters of the explosion pot type
IPC: H01H1/38
Filed: 1932-12-15
Abstract: 407,793. Oil-break switches. DAVIES, D. R., 14, Ruabon Road, Didsbury, near Manchester, and ASSOCIATED ELECTRICAL INDUSTRIES, Ltd., Crown House, Aldwych, London. Dec. 15, 1932, No. 35615. [Class 38 (v).] Contacts.-In oilbreak switches of the explosion-pot type, in which a movable plug contact engages a socket contact comprising a plurality of segmental members pressed towards each other by means of springs, the registering pieces 16 and springs 15 for the segmental members 11 are supported by the wall of the explosion pot 1. In the form shown, the explosion pot 1 is secured to three stacks of plates 2 ... 4, the intermediate plate 3 being formed with transverse passages through which liquid is caused to flow when the circuit is broken. The segmental contact members 11 are carried by resilient connectors 12 secured between annular members 13, 14, the assembly being secured to a conductor 9 by a nipple 10. The registering pieces 11 for the segmental members are in the form of shouldered screws, the shanks of which enter recesses 18 in the outer sides of the segmental contacts.
Patent GB-785224-A (GB)
Title: Improvements in sighting or viewing devices
IPC: G02C7/16
Filed: 1955-12-09
Abstract: 785,224. Practising golf. CHANDLER, R. A. Dec. 7, 1955 [Dec. 9, 1955; Aug. 6, 1955], Nos. 35647/54 and 22705/55. Class 132(2) [Also in Group XX] A sighting or viewing device for use in the playing of golf comprises a screen adapted to be worn over the eye or eyes and having a narrow horizontal sighting area or a pair of such areas defined thereon by a frame therearound or a slit-like aperture therethrough, each area being of adjustable length. As shown the device is in the form of a pair of spectacles having opaque eyepieces 4 each provided with a horizontal slit 5 through' which the golf ball may be viewed and carrying a pair of shutters 6 pivoted at 7 so that the effective length and lateral position of the observation slit can be varied, the position being indicated by a scale 10. Alternatively each eyepiece may be transparent and the slit formed by the space between two opaque lines formed thereon.
Patent GB-1114578-A (GB)
Title: Beam-of-light transistor
IPC: H01L31/12
Filed: 1965-08-19
Abstract: 1,114,578. Semi-conductor devices. RADIO CORPORATION OF AMERICA. 19 Aug., 1965 [10 Sept., 1964], No. 35706/65. Heading H1K. An opto-electronic transistor comprises a body of semi-conductor material with three layers forming two junctions one of which emits radiation and the other being radiation. sensitive, the material of the common region being doped to a level sufficient to cause a shift in the absorption band edge of the material towards the shorter wavelengths. The common base region may be doped to degeneracy and is thicker than a minority carrier diffusion length. The junctions are made thick to prevent tunnelling. The base region is transparent to the emitted radiation, due to the shift of the absorption band edge, which therefore falls on the collector junction which is reverse biased. The emitter and collector regions are more lightly doped so that the absorption band edge is shifted less and they therefore absorb the radiation. The semiconductor material may be GaAs, InAs, InP, or InSb and the device may be produced by alloying dots of indium containing an acceptor to the major faces of a degenerate N-type wafer of InAs or InSb, and then heating to increase the thicknesses of the junctions, Fig. 2 (not shown). Alternatively an N + type layer is diffused into one face of a P-type wafer of GaAs, part of the layer is out-diffused and either an emitter electrode is alloyed to the diffused layer, Fig. 3 (not shown), or a P-type layer is epitaxially deposited on the diffused layer and reduced in size by etching using a photo resist mask, Fig. 4 (not shown). A tin contact may be alloyed to the base region. InSb devices are used at liquid nitrogen temperatures and below and InAs devices are used at solid carbon dioxide temperatures and below but it may be possible to use them at room temperature. In a further method of manufacturing the device a sheet of metal comprising or containing an N-type impurity is placed between two high-resistivity P-type wafers of a semi-conductor material which has a higher melting point than the metal. The metal is alloyed to the wafers in a jig, Fig. 5 (not shown). The arrangement is then placed in a second jig, Fig. 6 (not shown), which is heated in a reducing atmosphere to establish a temperature gradient parallel to the metal sheet, thermocouples being used to measure the temperatures at the two sides. The cooler side of the arrangement is at a higher temperature than the melting point of the metal. The molten metal dissolves semi-conductor material at the hot side and migrates to the cooler side where it becomes supersaturated and solid highly doped material is deposited while the liquid metal is progressively forced towards the hot side. After cooling connections are made to the major faces of the wafers and to the base layer. If the semi-conductor wafers are of InAs or InSb the metal sheet may be of In containing up to 10% Te or Sn. Complementary devices (NPN) may also be produced and it is stated that one or both of the junctions may be heterojunctions.
Patent GB-448708-A (GB)
Title: Improvements in or relating to the manufacture of cyclic esters
Filed: 1934-12-12
Abstract: Cyclic esters having more than seven carbon atoms in the ring are prepared by known general reactions, characterized in that the reaction is effected in the presence of a relatively large quantity of an inert liquid which is a solvent for the reaction materials. The known general reactions referred to are (a) formation of lactones by the internal condensation of hydroxy acids; (b) formation of cyclic esters by direct esterification of a dibasic acid with a dihydric alcohol or by alcohol interchange between a dihydric alcohol and a dialkyl or diaryl ester of a dibasic acid or by reaction of a glycol with a dibasic acid halide, including phosgene; (c) formation of cyclic esters by internal condensation of compounds of the general formula <FORM:0448708/IV/1> where M is a metal and X is an inorganic or organic ester group such as sulphato, toluene sulphonoxy or halogen; or (d) formation of cyclic esters by condensation of a salt of a dibasic acid with a compound of the general formula <FORM:0448708/IV/2> p  where X has the significance as above. Suitable inert solvents include aromatic and aliphatic hydrocarbons, ketones, ethers and halogen compounds such as xylene, toluene, "Hiflash" naphtha, chlorobenzene, b -b <1>-dichlordiethyl ether, acetylene tetrachloride, cyclohexanone and dibutyl ether.  The process may be applied to the manufacture of lactones from o -hydroxydecanoic, dodecanoic, tridecanoic and pentadecanoic acids; to the manufacture of cyclic esters, preferably in the presence of an esterification catalyst, from glycols such as ethylene, propylene, butylene, trimethylene, tetramethylene, pentamethylene, hexamethylene, heptamethylene, octamethylene, nonamethylene, decamethylene, undecamethylene, dodecamethylene, tridecamethylene, tetradecamethylene, diethylene, and triethylene glycols and dibasic acids such as oxalic, malonic, succinic, glutaric, adipic, suberic, pimelic, azelaic, brassylic and tetradecamethylene dicarboxylic acids; to the manufacture of cyclic esters by means of ester interchange such as by the interaction of diphenyl sebacate and ethylene glycol; to the manufacture of cyclic esters from a glycol and a dibasic acid halide preferably in the presence of a tertiary amine as a catalyst such as the interaction of decamethylene glycol and phosgene in the presence of pyridine; to the manufacture of cyclic esters by the interaction of a salt of an acid group or an ester of an alcohol group such as the intra molecular reaction of compounds such as CH3--C6H4--SO3--(CH2)15--COOM or Br--(CH2)15--COOM; and to the manufacture of cyclic esters from a derivative of a glycol such as a di-p-toluenesulphonic ester and a salt of a dibasic acid. In an example, o -hydroxypentadecanoic acid is converted into a lactive by heating in solution in xylene in the presence of p-toluene sulphonic acid.  Specification 433,632 is referred to.
Patent GB-810419-A (GB)
Title: Etching apparatus
IPC: C23F1/08
Filed: 1957-11-18
Abstract: 810,419. Etching. DIRATS, J. Nov. 18, 1957 [Jan. 4,1957], No. 35780/57. Class 100(2) Apparatus for etching printing plates includes an etching tank with a liftable cover having a circular opening, a rotatable shaft extending vertically and off-centre through the opening and carrying a plate holder at its lower end, a series of splash padles arranged in parallel horizontal rows in the tank, and means mounted on the cover for rotating the shaft and simultaneously moving it bodily along a circular path concentric with the opening. A motor 26 drives a shaft 29 journaled in a bearing secured to a fixed plate 23 and concentric with the opening 17. The shaft 29 carries a pinion 37 engaging a gear 38 on the plate holder shaft 18 to rotate it. The shaft 18 carries a second gear 40 engaging a fixed gear 36 secured to the bearing of the shaft 29. The shaft 18 is journalled in a structure comprising plates 33, 34, 35, which is rotatable about the bearing of the shaft 29.
Patent GB-1095879-A (GB)
Title: Vacuum bottles having fillers with plastic liners
IPC: A47J41/02
Filed: 1965-08-20
Abstract: 1,095,879. Stoppers. ALADDIN INDUSTRIES, Inc. Aug. 20, 1965 [Aug. 20, 1964], No. 35804/65. Heading B8T. [Also in Division F4] A stopper 38 for a vacuum bottle comprises a cup-shaped member 39 with a tapered shoulder 40 adapted to seat on a curved portion 41 of the bottle liner 12. The member 39 is closed by a disc 45 and has a downwardly projecting outer flange 43 formed with screw threads 44 to engage threads 42 on the bottle casing 19. The parts may be made of resinous plastic material. In a modification, screw threads on the outside of the member 39 engage corresponding threads in the neck of the bottle liner.
Patent GB-1468078-A (GB)
Title: Electrolytic devices
IPC: H01G9/04
Filed: 1974-08-14
Abstract: 1468078 Alloys P R MALLORY & CO Inc 14 Aug 1974 [15 Oct 1973] 35854/74 Heading H1M [Also in Division C7] The surface layer 14 of an electrode suitable for use on a cathode electrode 11 in contact with a liquid or semi-liquid electrolyte 22 in a capacitor consists of a pore-free alloy containing which has been applied to a base material 13 of either Ag, Ag alloys other than Ag-Au, Cu and its alloys, Ni and its alloys, steels, Nb, Ta &c., e.g. by brazing, roll bonding, electroplating &c., with or without an intermediate layer such as Ta or Nb. The capacitance area of the electrode surface is enhanced by the diposition of a layer of a finely divided material 15, i.e. Pt, C, Au &c., on the surface.
Patent GB-844083-A (GB)
Title: Improvements in or relating to centrifugal governors
Inventor: WOOD ROBERT SPURGEON
IPC: F16K15/00
Filed: 1957-11-18
Abstract: 844,083. Centrifugal governors. PLESSEY CO. Ltd. Feb. 18, 1959 [Nov. 18, 1957; Feb. 12, 1959], Nos. 35877/57 and 4972/59. Class 57. [Also in Group XXIX] A centrifugal governor for the spill valve element 13 of the fuel control system of an engine, such as a gas turbine, comprises a governor member 18, 19 pivoted for movement in a longitudinal radial plane containing its axis of rotation and having the valve element coupled to it at a point thereon which lies approximately in the axis of rotation and in a plane passing through the pivot of the member normal to the axis. As shown applied to a geartype fuel pump, the governor member 18, 19, of L-shape cross-section, is connected by the arm 18 to a leaf-spring 20 which is secured to a member 10 mounted for rotation with the driven gear-shaft 7 of the pump. In operation, during normal running, the pressure of the fuel, which is in communication through a bore 7a in the shaft 7 with the valve element 13, is balanced by the effect of the centrifugal member loaded by a spring 14 mounted in a housing 15 and rotatable with the member. With an increase in engine speed, the member 18, 19 overcomes the pressure of the spring thereby opening the valve and returning excess fuel back to the pump delivery. In the modification shown in Fig. 2 the spring 14 mounted in a housing 15a can be pre-loaded by supplying a liquid under variable pressure through a pipe 31 and a bore 28 in an extension 27, to act upon a piston 26 in contact with the spring; a thrust bearing is fitted to take up some of the thrust reaction in the housing 15a and slots 15b are provided therein to facilitate the return of the excess fuel to the pump.
Patent GB-335450-A (GB)
Title: Improvements in and relating to power operated valves
IPC: F16K31/04
Filed: 1929-11-25
Abstract: 335,450. Fabrik Electr. Apparate F. Sauter Akt.-Ges. Nov. 26, 1928, [Convention date]. Actuating-mechanism; electrically-actuated valves. - A power operated valve, wherein an axially movable spindle 15 is cornected to a. motoroperated crank device 6, 7 through the intermediary of a spring 13, is so arranged that the effective action of the spring is in a direction along the axis of the valve spindle 15. An electric motor 1 drives the crank mechanism 6, 7 and is provided with a switching arrangement 21. 22, 24 which permits of a half revolution at a time of the crank. A connecting-rod 9 slides in a longitudinally movable casing 10 in which is located the compression spring 13 which presses a pin 11 on the connecting-rod 9 against the upper end of a slot 12 on the casing 10 in the open position of the valve. The valve spindle 15 is connected to the movable casing 10 by means of a pin 14. The stroke of the rod 9 is arranged to be greater than the lift of the valve member 17 so that, in the closed position, the valve is held on to its seat by spring pressure, and, in the opening movement, is raised positively therefrom by the abutment of the pin 11 against the upper part of the slot 12. In place of the compression spring 13, a tension spring may be used, and the thrust rod 9 may be provided with a slide in which the crank pin 8 is guided to replace the more rigid connection shown.
Patent GB-433173-A (GB)
Title: Improved safety device for use by drivers of aeroplanes, motor-cars and like vehicles
IPC: B60K28/06
Filed: 1934-12-17
Abstract: 433,173. Safety device for aircraft. GALLI, L. C., 25, Broadway, Dunedin, New Zealand. Dec. 17, 1934, No. 36111. Convention date, July 17. [Class 4] [See also Groups XXXI, XXXIV, XXXVII, and XXXVIII] A safety device for motor vehicles or aircraft comprises a switch normally held in inoperative position by lateral pressure of the driver's leg, this switch when released being returned by a spring to a position in which electric circuits are completed to operate means for rousing or restoring the driver to consciousness. The switch, when released, may also energize audible and visual warning signals. In the arrangement shown in Fig. 3 applied to a motor vehicle, the switch comprises movable contacts 10, 11 adapted to engage alternatively with fixed contacts 12, 13, the switch plunger 2 having a crutch 17 against which the driver's leg is adapted to press. In the position shown, the switch has been released, the contacts 11, 13 have been separated thus breaking the ignition circuit, and the contacts 10, 12 are closed, completing circuits from a battery 22 to a horn 26, a bell or buzzer 27, warning lamps 28 inside and outside the vehicle, and a solenoid 29 or electric motor which applies the brakes. Circuits may also be completed to devices (not shown), for discharging within the vehicle a gas or vapour designed to counteract the effect of CO or other stupefying gas, a ventilating fan being also provided. 23 is a handoperated switch closed whenever the vehicle is is use. The safety device may be put out of action by moving a switch 24 from contact 24b to 24a, the ignition circuit being then completed directly through the switch 24. In the case of aircraft the safety device does not affect the ignition circuit and the braking arrangement is omitted. The switch is adjustably mounted on a door or bracket at the side of the driver, and the springs of the driver's seat may be stiffer at the side nearer the switch so as to tend to move the driver's leg away from the switch. The adjustable mounting for the switch may comprise a fixed plate with a spiral or other cam slot, the switch being secured by wing-nuts in any desired position in the slot.
Patent GB-158502-A (GB)
Title: Improvements in or relating to kites
IPC: B64C31/06
Filed: 1919-09-25
Abstract: 158,502. Pantsos, (known as Pantcheff), S. X. Sept. 25, 1919. Kites.-Strength and any devised colour effects in the coverings of kites are secured by sticking together the overlapping edges of pieces of tissue paper, linen or light fabric cut into strips or other shapes. Sheets so formed are pasted over the peripheral thread of the kite. Specification 158,600 is referred to.
Patent GB-374409-A (GB)
Title: Improvements in thermionic valve circuits
IPC: H03F3/22
Filed: 1930-12-02
Abstract: 374,409. Valve amplifying circuits. LORENZ AKT.-GES., C., 1, Lorenzweg, Tempelhof, Berlin. Dec. 2, 1930, No. 36356. Convention date, Dec. 4, 1929. Drawings to Specification. Void [Published under Sect. 91 of the Acts]. [Class 40 (v).] Push-pull and parallel connected valves are arranged to work on the most favourable portions of the characteristic curves of the valves by providing individual grid bias arrangements for each valve. The grids are isolated for direct current by the provision of condensers and the required bias is applied through separate grid leaks.
Patent GB-928657-A (GB)
Title: Hydraulic transmission with low speed slip compensation
IPC: F16H61/46
Filed: 1959-10-27
Abstract: 928,657. Hydraulic transmissions; fluid-pressure servomotor control systems. OILGEAR CO. Oct. 27, 1959 [Nov. 3, 1958], No. 36441/59. Classes 69 (2) and 135. In an hydraulic transmission in which a fixed displacement motor 7, subject to suddenly applied loads, is connected by supply and return pipes 5, 6 with a variable-displacement pump 1 the displacement of which is adjusted by a servomotor 10 in response to changes of pressure in a pipe 12 connecting a pump 11 driven by the motor with a reference pump 4 driven by the means, e.g. an electric motor, driving the pump 1 whereby to maintain constant the speed of the motor 7 despite changes of load thereon, a spring-loaded plunger 41 is connected to the pipes 5, 12 in such a manner as to cause, in response to an increase of pressure in the pipe 5 due to increased load on the motor, an injection of fluid into the pipe 12 and consequently into the servomotor 10 to provide a rapid or anticipatory adjustment of the pump displacement. A gear pump 3, also driven by the means which drives the pump 1 and discharging through a relief valve 24, provides a loading pressure opposing the servomotor 10 and feeds the circuit containing the pumps 4, 11. The pump 4 is manually adjustable. In a modification, the pump 4 is dispensed with and the gear pump feeds the pump 11 through a flow control valve and loads the plunger 41, which is of dumb-bell form, through a pressure regulating valve. In a further modification, the servomotor 10 incorporates an hydraulic relay with moving-seat "follow-up."