baber/WOPTO huggingface dataset:
Patent GB-1386188-A (GB)
Title: Light measurement circuit
IPC: G03B7/083
Filed: 1973-06-08
Abstract: 1386188 Photo-cell circuitry ASAHI KOGAKU KOGYO KK 8 June 1973 [9 June 1972] 27470/73 Heading G1A [Also in Division G2] A light measurement circuit comprises a photodiode PD and a log compression element Q1 for providing an output V B  to control a camera shutter, and a source follower circuit Q2, VR1 having an input connected to the junction of PD, Ql and its output connected to the other terminal of the photodiode PD and arranged so that its output voltage VS approximately equals the voltage VC at the input. The voltage across PD is thereby zero, thus eliminating the dark current. In Fig. 3 (not shown) a source follower circuit (Q3, Q4, VR2) applies a voltage to a transister (QS) which in turn provides the output voltage. In Fig.4 (not shown) the emitter of Ql is connected to a source of voltage (A) proportional to the APEX indices A v S v  and the voltage V B  controls a shutter electromagnet (MG) via an integrating capacitor (C T ) and optinally a memory capacitor (not shown).
Patent GB-1465028-A (GB)
Title: Method of colouring synthetic resin material
IPC: D06P1/90
Filed: 1975-06-30
Abstract: 1465028 Dyeing synthetic materials DAINI SEIKOSHA KK 30 June 1975 [17 July 1974] 27566/75 Heading D1B Synthetic resin materials e.g. polyamides, polyurethanes, polycarbonates, polyacrylates polyvinyl chloride and polyesters are dyed by immersing the material in a colouring solution at a temperature less than the softening temperature of the material, the colouring solution comprising in admixture 0.1% to 50% by weight of at least one polyacid of formula HOOC(CH 2 ) n COOH n is an integer between 3 and 15, 5% to 60% by weight of at least one polyhydric alcohol, a dye and water. The acid may be adipic, pimelic, suberic, azelaic, sebacic, dodecanedioic, Brasilic or tetradecanedioic, preferred alcohols being ethylene glycol, propanediol, butanediol, pentanediol, hexanediol, glycerin.
Patent GB-1390431-A (GB)
Title: Pumps particularly power steering pumps
IPC: F04C2/344
Filed: 1972-06-13
Abstract: 1390431 Rotary positive-displacement pumps T R W Inc 13 June 1972 [6 Oct 1971] 27598/72 Heading F1F A pump comprises a shaft 26 extending through a housing plate 21 and having a rotor 29 which carries slippers 33 engaging a cam 30 formed in a cam ring 31, there being upper and lower pressure plates 40, 36 contacting respective opposite sides of cam ring 31 and rotor 29, and a top plate 94 having an aperture 96 which receives a guide member 97, a space being defined between the bottom of aperture 96 and the member 97, this space being in communication with each working chamber via openings in the top and upper plates 94, 40 so that fluid pressure transmitted to the  space serves to pressure load the upper plate 40 against cam ring 31. All these parts are surrounded by a cup-shaped member 115 having a flange 118 bolted to housing plate 21 and being attached by welds 120 to guide member 97. The whole is enclosed in a casing 125 sealingly connected at 131 to housing plate 21, screw 128 serving to attach casing 125 to guide member 97. A spring 102 serves to urge the stack of pump elements together. A valve member 86 is located in holes 73, 84, 56, 109 in the stack. The upper pressure plate 40, Fig. 13, has inlet ports 41a, 41b, 42a, 42b and outlet ports 43a, 43b, 44a, 44b. The lower side is recessed at 53, 54 and 56. A boss portion 47 receives valve 86. The distribution of inlet ports and outlet ports of the top plate, cam ring, lower pressure plate and housing plate can be easily distinguished in the respective Figs. 5, 3, 12 and 11. Casing 125 encloses a reservoir of fluid and communicates by inlets 122, 123, aspirators 80, 81 and by-pass passages 82, 83, Fig. 3, with the space between shell 115 and the stack of elements. This space acts as an inlet zone, fluid being drawn via recess 69, 70 in housing plate 21, and inlets 58, 58a, 57, 57a in lower plate 36 with the pumping chamber which discharges fluid to recess 56 in the upper plate 40. From recess 56 it passes through aperture 91 of valve 86 to chamber 109 in top plate 94 and thence via live outlets 110, 46, 79, 61, 71 to a pump outlet 110. Arrangements to ensure that the space between shell 115 and the pump stack can only communicate with the reservoir of casing 125 via the aspirators 80, 81 and by-pass passages 82, 83 are also described, Figs. 7 to 10, (not shown).
Patent GB-1020605-A (GB)
Title: Control apparatus
Inventor: JOSSOUD MICHEL
IPC: G05D23/19
Filed: 1964-07-03
Abstract: 1,020,605. Automatic temperature control. COMMISSARRIAT A L'ENERGIE ATOMIQUE. July 3, 1964 [July 11,1963], No. 27610/64. Heading G3R. A system for controlling the value of a physical variable, such as the temperature in a chamber, comprises means for detecting the value of the variable to produce a signal corresponding to the different between the actual and desired value of the variable when this difference exceeds a specific amplitude the signal being operative on a step-by-step mechanism effective to restore the variable to its desired value. A chamber B is heated by means of an electric heater 6 supplied from a tap changing transformer 8, the temperature of the chamber being detected by a contact making thermometer 18. Changing of the taps on the transformer 8 is effected by movement of the shaft 24 such movement taking place when a coil 30 and either a coil 16 or 16<SP>1</SP> are energized. Energization of coil 30 clutches a disc 32 to a disc 34 causing a specific angular movement of the shaft 24 when energization of coil 16 or 16<SP>1</SP> causes lateral movement of a magnet 38 so causing angular movement of the disc 34. Each movement of the shaft 24 changes the tap on the transformer 8 by one step to increase or decrease the voltage applied to the heater 6. A continuously rotating motor 48 drives two cams 50, 52 which close switches 14, 36 respectively for a brief interval during each cam revolution, the switch 36 closing and opening slightly in advance of the switch 14. If now the temperature of the chamber B exceeds the desired value by more than a specific figure the thermometer 18 causes the moving contact in a contactor 10 to engage the upper or lower fixed contact according to the deviation in temperature. Thus when the switches 14, 36 are next both closed the requisite coils 30,16 or 16<SP>1</SP> are energized to increase or decrease the voltage tapping on the transformer 18 thus to correct the temperature of the chamber B.
Patent GB-853905-A (GB)
Title: A slider for sliding clasp fasteners
IPC: A44B19/30
Filed: 1957-09-02
Abstract: 853,905. Sliding-clasp fasteners. HANSEN, H. Sept. 2, 1957 [Sept. 7, 1956], No. 27644/57. Class 44. A slider for a slide fastener is provided with a spring-biased latch member 8 pivotally mounted at 10 on one wing 1 of the slider and having a finger 14 projecting through an opening 15 in the wing 1 for locking the fastener, the finger 14 forming one branch of a bifurcated end portion of the latch member 8, the other branch being formed by a tongue 17 having its lower edge shaped to provide an inclined cam 18 for engagement by a transverse pin 19 of the pulling link 20. The upper edge of the latch member 8 is engaged by a spring blade 21, disposed in an outer cap 22 attached to projections 4, 5 on the wing 1 and urging the finger 14 into engagement with the coupling links (not shown) of the fastener, and a nose 12 is provided on the latch member which, when the slider is unintentionally moved in the opening direction, will press into the spring blade 21 and form a pivot around which the latch member 8 will revolve to bite more firmly into the coupling links. The spring blade 21 therefore can be constructed with a relatively small spring force which consequently reduces the pulling force necessary at the link 20 to disengage the finger 14, this force being further reduced due to the relatively longer travel of the pin 19, forward and rearward of the finger 14, allowing the cam 18 to have a smaller incline. A cam surface 28 may be formed on the wing 1.
Patent GB-151654-A (GB)
Title: Improvements in and connected with internal combustion engines
IPC: F02B33/00
Filed: 1920-09-29
Abstract: 151,654. Daimler Motoren-Ges. July 29, 1919, [Convention date]. Spray carburettors.- Engines for aircraft and for other purposes are charged by a rotary compressor, preferably a Roots' blower b, which delivers air into an engine supply pipe c containing a carburettor d. The blower is driven from the engine at a speed not less than 2.000 revolutions per minute.
Patent GB-251540-A (GB)
Title: Improvements in air heaters working on the regenerative principle
IPC: F28D19/04
Filed: 1925-11-04
Abstract: 251,540. Muchka, J. June 25. 1925, [Convention date]. Regenerators.-For preventing mixing of gas and air due to leakages in regenerative air heaters having movable heating elements, one or more intermediate chambers are provided between the air space and the gas space, which chambers may be placed under a pressure different from that in the air and gas spaces. As shown applied to a locomotive smoke box in which rotating discs 3 project partly into the gas flue 1 through which the hot combustion gases pass to the funnel 2 under the action of the blast pipe 5, 7, and partly into the air flue 4 through which the combustion air entering at 17 is conveyed to the fire-box, the gas and air spaces are separated by a chamber 11 formed by two dividing walls 13 and exhausted by the blast nozzle 5. The walls 13 comprise bars extending between the rotating discs 3 which are mounted on a shaft 12 driven by gearing 8, 9 and cone drive 15 from a wheel axle 14 of the locomotive. The belt of the cone drive may be adjusted by a belt fork 16 operated by the valve gear of the engine to regulate the heat exchange in accordance with the admission of steam to the engine.
Patent GB-622733-A (GB)
Title: Improvements in hair pins
IPC: A45D8/14
Filed: 1945-10-22
Abstract: 622,733. Hair pins. GAYLORD PRODUCTS, Inc. Oct. 22, 1945, No. 27800. Convention date, Oct. 21, 1944. [Class 131] In a hair pin, comprising two legs 8, 9 of resilient wire connected together by a bridge portion 11 integral with both legs, one leg 9 has crimps forming with the other leg triangular hair-' receiving pockets 13, 16, 17 the shortest side being formed by the side of the crimp more remote from the bridge portion and meeting the uncrimped leg at an angle of 30 - 90 degrees. The pin is preferably formed with legs of gradually increasing width and decreasing thickness towards the free end and the lengths of the sides 12, 18, 19 of the crimps is approximately three times the lengths of the sides 14, 21, 22 the portion 12 being substantially parallel to the leg 8 which may be straight or arcuate. In modifications the uncrimped leg is cranked or recessed at the points where it is in contact with the crimped leg.
Patent GB-742709-A (GB)
Title: Improvements in the production of polycarboxylic acids
IPC: C07C51/275
Filed: 1952-11-05
Abstract: A process for the production of aromatic polycarboxylic acids consists in treating the crude oxidation product obtained by the catalytic oxidation of polyalkylated aromatic compounds with oxygen or oxygen-containing gases and consisting of a mixture of aromatic alkyl carboxylic acids and aromatic polycarboxylic acids which is strongly contaminated by intermediate oxidation products and compounds of high molecular weight, with nitric acid under increased pressure and at elevated temperature.  The treatment with nitric acid may be carried out in the presence of oxidation catalysts, e.g. ammonium vanadate.  In examples a mixture of phthalic acids is obtained by oxidizing a mixture of toluic and phthalic acids obtained by oxidizing industrial xylene with air in the presence of a heavy metal compound soluble in the reaction mixture, e.g. cobalt naphthenate, at elevated temperature and pressure, with dilute nitric acid in an autoclave at elevated temperature (1); terephthalic acid is obtained from p-xylene by a similar process using ammonium vanadate as catalyst in the nitric acid treatment (2); isophthalic acid is obtained by a similar process using m-xylene (3); trimesic acid is obtained in a similar process to (1) using mesitylene (4); nitro-terephthalic acid is obtained from nitro-p-xylene in a process similar to (1) (5); and phthalic acid is obtained by oxidizing diethylbenzene with air at elevated temperature and pressure in the presence of cobalt and manganese naphthenates and oxidizing the product with dilute nitric acid at elevated temperature (6). Diisopropylbenzenes are said to be similarly oxidized to the corresponding phthalic acids.  Specification 712,315 and U.S.A. Specification 2,636,899 are referred to.
Patent GB-297841-A (GB)
Title: Process for producing flour-like horn and similar materials by grinding
IPC: B02C19/00
Filed: 1928-09-28
Abstract: 297,841. Oexmann, H. Sept. 30, 1927, [Convention date]. Rasping and like abrading apparatus.-Horn, resin, casein, cellulose derivatives &c. are ground to a flour fine product by intermittent dry grinding. Grinding-discs, rings, or cylinders are used for the grinding which are made of carboruudum &c. or natural stone. The raw material is ground without preliminary treatment and the discs &c. are cooled. Horn may be pressed into cylindrical blocks and may be mounted on a slide rest which is moved automatically, or the block may be mounted so that the grinding end moves along an arc-shaped path. The block and the grinding disc may rotate eccentrically to each other whereby intermittent grinding' movements are produced. Cylindrical horn blocks may be inserted in a sleeve or mandrel which can be rotated so that a portion of the end face is exposed to the grinding action. A cylindrical block might also be ground on its periphery. The Specification as open to inspection under Sect. 91 (3 (a) describes also a metal disc having rasp-like projections, and refers to the grinding of glass. This subject-matter does not appear in the Specification as accepted.
Patent GB-864044-A (GB)
Title: Volume indicator for anesthesia machine system
IPC: A61M16/10
Filed: 1959-08-14
Abstract: 864,044. Respiratory appliances. AIRSHIELDS Inc. Aug. 14, 1959 [Aug. 21, 1958], No. 27842/59. Class 81 (2). Respiratory apparatus has means for measuring the volume of air inhaled and exhaled at each respiration. The mask 5 is supplied from cylinders 10a, 10b through a pipe 9 and this is connected with the interior of a bellows 13, so that the latter expands and contracts with the patient's respiration. The bellows is enclosed in a chamber 12 having transparent walls and the intervening space is connected through a pipe 20 to a flexible bag 19. Movement of the bellows can thus be observed through the wall of the chamber 12 and measured against a scale 30, while displaced air causes distension or collapse of the bag 19. Provision of the bag 19 enables the operator to control inhalation by manual pressure on it. If the system receives an excessive volume of gas from the supply cylinders the increased extension of the bellows ultimately lifts a valve 22 by means of a cord 26 to vent the system to atmosphere.
Patent GB-676453-A (GB)
Title: Improvements in or relating to drawers for furniture
IPC: A47B88/00
Filed: 1949-10-31
Abstract: 676,453. Furniture drawers. D. M. D. (SLOUGH), Ltd., and THOMAS, C. G. Oct. 31, 1950. [Oct. 31, 1949] No. 27853/49. Class 52 (i). A drawer is formed by a trough-shaped member 1 moulded or pressed from sheet material such as plywood, metal, plastic or other laminated material and has bonded in recesses 4, segmental fillets 5 having grooves 6 with metal liners 7 to co-operate with e.g. a T-shaped runner fixed to a drawer supporting-structure. Preferably, wood laminae and the fillets 5 are placed between a die and matrix 15, 16 and moulded under heat and pressure, a thermosetting glue being used. The heat is derived from a high-frequency electric field and the pressure by forming the die 15 as a resilient bag inflated by a fluid. The outer laminae terminate below the recesses 4 so that the side walls are thinner at the top and the inner laminae do not extend to the ends of the trough so that rebates are left for glueing on the front and back plates 8, 10. A facing 12 is mounted on the plate 8 by screws 14 which also secure a handle to the front of the facing 12.
Patent GB-870944-A (GB)
Title: Improvements in or relating to a machine for molding articles of plastic material
IPC: B29C49/06
Filed: 1958-08-29
Abstract: 870,944. Moulding hollow articles. PLAX CORPORATION. Aug. 29, 1958 [Sept. 5, 1957], No. 27876/58. Class 87(2). Blanks 14, Fig. 3, are formed at a fixed central station 11 and alternately transferred to blow moulding stations 12 and 13 by independently operated carriers 17. The carriers 17 comprise plungers P and sectional neck moulds 27, one carrier being operated by a piston motor 20, Fig. 1, and the other by a piston motor 21. Thermoplastic material is preferably supplied continuously through a connection 49 to a cylinder 48 from which it is intermittently injected into moulds 15 through valves 50. While a carrier 17 is being transferred to the blank moulding station 11 the valves 50 are closed and the supply of plastic to cylinder 48 depresses its ram and the piston rod 55 of a motor 51. When the cylinder 48 is full a member 54 carried by piston rod 55 actuates a switch 56 to start a timer 57. Starting of timer 57 is also dependent on a switch 40 which is operated by the closing of moulds 15. A motor 60 is then operated to open valves 50, and a motor 46 depresses a bar 44 to clamp the plunger and neck mould assembly in the moulds. Simultaneously high pressure is supplied to motor 51 to operate the injection ram. After a predetermined time, the motor 60 is operated to retract piston rod 51 to close the valves 50, and a member 62a operates a switch 62 to open the mould and raise pressure bar 44. The neck rings 27 and plungers P are raised slightly by means of springs 63 to lift the sprues out of the injection nozzles. Upward movement of bar 44 actuates a switch 59 to operate motor 21 to transfer the carrier 17 to the blow mould station 13. A motor 64 is also operated to raise blow mould bottom plates 66 to the moulding position. When switches 68, 69 are operated by members 67, 42 respectively, a second timer 47 operates to close the blow moulds 18. Simultaneously a block 72 is pressed downwardly against the tops of the plungers P and air is blown through the plungers to form bottles or the like 19. After a preselected cooling time the blow moulds 18 are opened and the bottles 19 blown off the plungers. At the completion of the blowing operation the carrier 17 is moved to station 11 (where new blanks are formed) and returned to station 13 before the blow moulds at the other station 12 are opened.
Patent GB-648900-A (GB)
Title: Improvements in or relating to plasticized vinyl resin compositions and to methods of preparing the same
IPC: C08L27/04
Filed: 1947-10-20
Abstract: Polymers or copolymers of vinyl chloride or vinylidene chloride are plasticized by a copolymerization product of 30 to 80 parts of a butadiene-1,3 hydrocarbon with 20 to 70 parts of an acrylic nitrile, the product having a molecular weight below 85,000 and a Mooney viscosity below 35 as determined by means of the Mooney Viscosimeter using the 1.5 inch rotor after four minutes at 212 DEG  F.  The vinyl chloride or vinylidene chloride may be copolymerized with each other or with minor amounts of other compounds containing a single double bond, e.g. vinyl acetate, propionate and butyrate, methyl acrylate, methacrylate and ethacrylate, ethyl acrylate, diethyl maleate and monochlormaleate, styrene and ethylene.  The plasticizers may be prepared from butadiene-1,3 or isoprene with acrylonitrile, chloroacrylonitrile, methacrylonitrile or ethacrylonitrile and are soft and non-rubbery.  Small proportions of a third component, e.g. myrcene, methyl, methacrylate and divinyl benzene, may be added. They are preferably prepared in aqueous emulsion using substantial quantities of modifying compounds such as mercaptans, non-metallic xanthogenates and other sulphur-containing compounds, or, using less modifier, terminating the polymerization at an early stage by an inhibitor, e.g. hydroquinone.  The polymerization may also be effected in the presence of emulsifiers and catalysts, such as soap flakes, sodium alkaryl sulphonates, laurylamine hydrochloride, potassium sulphate, hydrogen peroxide, sodium pyrophosphate, ferric sulphate and cobalt chloride; and the polymeric latex may be stabilized by heptylated diphenylamine. The plasticizer may be dry-mixed with the vinyl or vinylidene chloride resin, or mixed in solution, or, preferably, added as a latex to a latex or aqueous slurry of the resin and co-precipitated by a salt or acid to produce, after separating fatty acids &c., a clear, homogeneous blend. Precipitation may also be produced by the use of emulsifying-agents of opposite charges in the two latices.  The plasticizer-resin ratio may range from 5 : 95 to 90 : 10.  Additional substances such as carbon black, calcium and lead silicates, ester-type plasticizers, triethanolamine, tars and pitches may be added by dry mixing or as an aqueous dispersion to the blended latex.  Specification 637,600 is referred to.
Patent GB-1298787-A (GB)
Title: Window drain valve
Inventor: JOLLY CLARENCE HAROLD
IPC: F16K31/22
Filed: 1971-06-15
Abstract: 1298787 Valves COMALCO Ltd 15 June 1971 27999/71 Heading F2V [Also in Division E1] A window drain valve comprises an inflow chamber 22 having an inlet 24, an outflow chamber 20 having an outlet 36, a web 18 separating the two chambers, and a cylindrical float 26 which moves towards the inlet when gusts of wind acting through the outlet 36 lower the level of fluid in the outflow chamber (Fig. 4, not shown). In the embodiment of Figs. 5-8 (not shown), cavities (46) and (48) house window panes; liquid from the outer pane drains directly via outlet (78) and liquid from the inner pane drains via a cylindrical float valve to outlet (80). The cylindrical valve member may be replaced by a spherical member in which case the inlet is made circular.
Patent GB-1033810-A (GB)
Title: Improvements relating to vibration dampers
Inventor: DUCKETT WILLIAM ARTHUR
IPC: F16F9/06
Filed: 1963-07-15
Abstract: 1,033,810. Shock absorbers. WOODHEAD MONROE Ltd. July 14, 1964 [July 15, 1963], No. 28010/63. Heading F2S. In an apertured piston and cylinder shock absorber the working fluid used comprises a gas/liquid emulsion under pressure. The ratio of liquid to gas is not less than 7 to 1 and not greater than 9 to 1 and the gas pressure is between 80 p.s.i. and 500 p.s.i. at 20‹ C. The working cylinder is closed at one end 11 and the piston rod 14 extends through a fluid-tight seal 12. The seal comprises two sealing rings 26, 36 mounted in a cavity 32 of a housing 33. The ring 26 is of frusto-conical shape the smaller diameter end being normally in tension about the rod 14 and also being spring loaded against the rod. The ring 36 is formed with an upwardly directed lip which frictionally engages the rod. The rings, therefore, act as oppositely acting one-way valves and the cavity 32 acts as a reservoir having a pressure relief passage 41 for fluid to pass back to the working chamber. An annular ring 21 is included in the seal, the ring being coated with a self-lubricating material such as sintered bronze. The piston 15 is provided with two valve assemblies consisting of a spring-loaded valve member 46 and two spring- loaded discs 58, 60, disc 58 being formed with a plurality of bleed notches. A cup 44 is mounted on the lower end of the piston rod, which together with a portion 42 of the housing 33 forms an hydraulic stop mechanism. In a further embodiment both piston valves may be of the disc type (Fig. 4, not shown). Two pistons may be provided, each piston having two disc-type valve assemblies with the like valves opposing each other (Figs. 5, 6, not shown).