baber/WOPTO huggingface dataset:
Patent GB-1312217-A (GB)
Title: Frequency doubler circuits
IPC: H03F1/30
Filed: 1971-07-06
Abstract: 1312217 Frequency doublers; stereophonic radio receivers SONY CORP 6 July 1971 [9 July 1970] 31736/71 Headings H3T and H4L A frequency doubler for use with the pilot frequency in a stereophonic radio receiver comprises a pair of rectifiers fed from a differential amplifier, and is suitable for construction as an integrated circuit. The differential amplifier comprises transistors Q3, Q4, Fig. 4, connected as a long-tailed pair by means of resistor R1: transistor Q3 is driven on its base, the base of transistor Q4 being earthed via capacitor C2 and a setting-up variable resistor R3. The collectors of transistors Q3, Q4 are connected to either end of a centre-tapped circuit L1, C1 tuned to the input frequency, and feed transistors Q1, Q2 which operate as rectifiers. The transistors Q1, Q2 have a common emitter resistor R4 and an output is taken at the double frequency from their collectors which are connected together. In a modification, the transistors Q1, Q2, Fig. 5, are coupled to further transistors Q 1 <SP>1</SP>, Q 2 <SP>1</SP> of opposite conductivity type. The arrangement may be driven via an emitter-follower Q7, Fig. 4, from a common-emitter-stage Q6, in which the collector-emitter path of a further transistor Q5 is connected in the emitter path and shunted by a circuit L2 series resonant at the signal frequency.
Patent GB-394227-A (GB)
Title: Improvements in high speed air and gas compressors
IPC: F04B39/06
Filed: 1932-11-10
Abstract: 394,227. Piston-rings. NEIDL, G.; 20, Badstrasse, Berlin. Nov. 10, 1932, No. 31770. [Class 122 (i).] Rings of stepped section are provided on the pistons 3, 4 of a compresser, the piston 3 having inlet and exhaust ports co-operating with cylinder ports.
Patent GB-1188174-A (GB)
Title: Automatic Change-Speed Transmissions
IPC: F16H61/02
Filed: 1967-07-11
Abstract: 1,188,174. Change speed control; valves. FORD MOTOR CO. Ltd. 11 July, 1967 [1 Aug., 1966], No. 31815/67. Headings F2D and F2V. In a fluid pressure control system, for a motor vehicle automatic change speed epicyclic gear, comprising automatic (vehicle speed and engine load demand responsive) 1-2, 2-3 Shift valves 180, 218, a Downshift valve 252 is rightwardly shiftable by TV pressure from an inlet manifold pressure responsive TV valve 266, only when said TV pressure reaches a maximum value with manifold pressure usually only slightly less than atmospheric) corresponding to a wide-open through-detent ("kickdown") accelerator pedal position, to direct said maximum value TV pressure to said shift valves for forced downshifting (at differing vehicle speeds for 1-2 and 2-3 shifts). To ensure that forced downshift only occurs when the accelerator pedal reaches its throughdetent position, an inlet manifold pressure responsive valve 336 isolates the manifold 334 from the TV valve 266, and traps a residual vacuum in the line 300 to the TV valve, when manifold vacuum reduces to a predetermined value, say less than 4 inches Mercury, and a valve 364 in parallel with the valve 336 and actuable by a lever 366 connected to the accelerator pedal re-connects the manifold to the TV valve when the pedal reaches its throughdetent position. The valve 366 (Fig. 6, not shown) comprises a ball (354) closed against a seat (356) by a spring (344) in opposition to manifold vacuum acting on a diaphragm (340). The valve 364 comprises a flexible tube 368 which is connected between the manifold and the TV valve, surrounds and normally closes on a ball 370, and, when acted on by the accelerator pedal-connected lever 366, is deformed, as shown, to provide passage past the ball. The Gear arrangement and Friction Clutches and Brakes are as described in Specification. 1,123,081. The Fluid System Components are similar to those in Specification 1,123,081, the principal described exceptions including the Cut-Back valve 216 which directs TV pressure direct to the Main Regulator valve 120, and the Coasting Boost valve 272 which directs, at High coasting speeds, Main line pressure to the Main Regulator Valve.
Patent GB-178482-A (GB)
Title: Improvements in electro-magnetic clocks
IPC: G04C3/027
Filed: 1920-11-11
Abstract: 178,482. Bulle, M. P. Favre-. Nov. 11,1920. Electric clocks; clock; framework; clock movements.-An electromagnetic clock has a forked rocking member 14, Figs. 1 and 2, which drives the clock-work by means of a pawl 6 and is engaged by an arm 16 on the pendulum 3, the contact of the arm 16 with one of the prongs of the member 14 causing the excitation of the magnet coil that maintains the motion of the pendulum. The pivot 15 of the member 14 is arranged below its centre of gravity, a stop 17 being arranged to limit its movement. The ratchet-wheel 7 engaged by the pawl 6 has fixed to it a worm 8 engaging a worm-wheel 9 on the shaft 10 of the minute-hand. All the gearing may be carried by an arm 19. In a modification, a pin 7<a>, Figs. 1<a> and 2<a>, on the pendulum 8<a> engages a forked rocking member 1<a> which is pivoted above its centre of gravity, a brake being applied to control its movement. The pin 7<a> is only slightly smaller than the slot e<a>, one side of which is faced with silver or other conducting-material, thus causing the pendulum gradually to resume its full movement after its movement has been accidentally reduced. In either of the two modifications the gearing may be carried by a frame consisting of a part 15<a> to which is secured a piece 16<a> of square tubing, an extension piece 17<a> being secured to the front face of the tubing.
Patent GB-299857-A (GB)
Title: Improvements in and relating to electron discharge devices
IPC: H01J9/395
Filed: 1928-11-02
Abstract: 299,857. International General Electric Co., Inc., (Assignees of Allgemeine Elektricitõts-Ges.). Nov. 2, 1927, [Convention date]. Vacuum tubes.-In the production of electron discharge devices, the introduction of alkaline earth metals is effected by heating within the envelope a mixture of a reducing-agent, which does not appreciably volatilize at the temperature of reaction, and one or more stable alkaline earth compounds which do not emit deleterious gases during the reaction. As reducing-agents, aluminium, beryllium or one of the rare earth metals may be employed, and as alkaline earth compounds, the oxides, aluminates or silicates. To prevent too rapid an action and consequent volatilization of the reducing-agent, diluting- agents, such as beryllium oxide, aluminium oxide or refractory metals, such as tungsten or molybdenum, may be employed. Alternatively, a mixture of substances which are acted on progressively by the reducing-agent mav be used. Metals, such as copper or aluminium, which form alloys with the alkaline earth metals may also serve as diluting-agents. When alkaline earth oxides are used, the mixture may be consolidated by pressure and saturated with paraffin oil or a similar inert liquid of sufficient viscosity which vaporizes at a high temperature. The bodies so formed are attached to an electrode and, after evacuation, are freed from gas by heating to 500‹C., the decomposition being effected by raising the temperature to 800‹C.
Patent GB-752058-A (GB)
Title: Improvements relating to foot valves for fluid pressure braking systems
IPC: B60T15/04
Filed: 1954-11-05
Abstract: 752,058. Fluid-pressure brakes. WESTING- HOUSE BRAKE & SIGNAL CO., Ltd. Nov. 5, 1954 [Nov. 6, 1953], No. 32059/54. Addition to 751,578. Class 103 (1). In a foot valve as claimed in Specification 751,578 the auxiliary body is spring-biased towards its unoperated position. In the embodiment shown applied to a tractor-trailer braking system the construction is similar to that illustrated in Specification 751,578 except that the auxiliary body 2 is spring- biased towards its unoperated position by an adjustable spring and pivoted lever arrangement 31-36 such that there is a delay between the operation of the trailer brakes and the operation of the tractor brakes to prevent " jack-knifing." Compressed air is transmitted to the trailer brakes via port 7, chamber 21, valve controlled passage 19, into chamber 14 and outlet port 8, and to the tractor brakes via port 30, chamber 29, valve controlled passage 24, into chamber 27 via conduit 28. The pressure admitted to the cylinder of the tractor will be lower than the pressure admitted to the trailer by an amount depending on the tension of the spring 35 which is adjustable so that it is possible to vary the decrease in pressure admitted to the tractor as a function of that admitted to the trailer. A further modification lies in the fact that the maximum pressure set up in the trailer brake cylinders may be adjusted by means of the nut 5 screwed on stem 4 of the first piston 11 such that if the nut is moved down the stem 4 to a point where the nut bears on the head 37 of the auxiliary body 2 before control of the braking circuit of the tractor is initiated by the means already described, further pressure exerted on stem 4 results in the depression of the body 2 thus initiating control of the tractor braking, the air pressure in the chamber 14 and the trailer conduit remaining constant. An alternative arrangement of the position of the spring 35 is described in the Specification.
Patent GB-465895-A (GB)
Title: Improvement in apparatus for incubating eggs and hatching chicks therefrom
IPC: A01K41/00
Filed: 1935-11-19
Abstract: 465,895. Hatching-appliances; automatic control systems. PETERSIME, I. M., and PETERSIME, R. M. Nov. 19, 1935, No. 32060. Convention date, Oct. 14. [Class 5 (ii)] [Also in Groups XI, XX, and XXXV] The egg trays 40, Fig. 8, are mounted in guides in a drum carried by a perforated tube 33 open at one end to the atmosphere and adapted to be turned by a handle 30a for tilting the trays. Fans 43 connected by spiders 42 rotatable on the tube 33 are driven by an electric motor 46 and circulate air radially from the tube through the trays. The trays 56 in a hatching compartment are also carried in a drum mounted on a perforated tube and provided with a circulating fan. After the incubation period, the egg trays 40 are inverted on larger hatching trays 56 that are placed in the hatching compartment and are covered with a wirework cover to protect the chicks. Air is passed out of the incubator by adjustable slides having perforations adapted to register with perforations in a wall of the incubator. The incubator is heated by thermostatically-controlled electric resistances 4, 4a, Fig. 7, arranged in the floor of the incubator in the rearing and hatching compartments, or the resistances may be arranged in the roof. The humidity of the air is regulated by the rotation of discs 28 dipping into water troughs 26. The discs are mounted on shafts 27 driven by electric motors 29 that are controlled by humidistats. Each humidistat comprises a perforated tube 5 containing a rod of bass or chestnut wood with the grain at right-angles to its length. One end of the rod is mounted adjustably in the tube 5, while the other end is connected to a plunger projecting through the other end of the tube and adapted, when a predetermined degree of humidity is indicated, to break the circuit to the electric motor driving the discs 28.
Patent GB-739610-A (GB)
Title: Improvements in or relating to chlorinated interpolymers
IPC: C08F8/20
Filed: 1953-11-19
Abstract: An unsaturated partially chlorinated isoolefin-polyolefin interpolymer containing 0.4 to 2.3 per cent of chlorine is prepared by chlorinating the interpolymer below 0 DEG  C.  More than one polyolefin or a third monomer such as styrene, chlorostyrene, acrylyl chloride or methallyl chloride may be present in the interpolymer. Specified iso-olefin, which are preferably used in major proportion, are isobutylene, 3-methyl- or 2-ethyl-butane-1 and 4-methyl- or ethyl-pentene-1 while specified polyolefins include butadiene, isoprene, 2,4-dimethyl-butadien, piperylene, 2-methyl-hexadiene-1,5, cyclopentadiene, dipentene, sylvestrene, phellandrene, 2,6-dimethyl-4-methylene-heptadiene-2,5, myrcene, fulvene, 6-ethyl fulvene, 1,3,3-trimethyl - 6 - vinyl - cyclohexadiene - 2,4, 6,6-vinyl - methyl - fulvene, phenyl butadienes, divinyl benzene, diallyl benzene and divinyl naphthalenes, many other similar compounds being specified.  Any chlorinating agent may be used, e.g. molecular chlorine, sodium hypochlorite, phosphorus pentachloride, N-chlorimide and N-chloramide.  Chlorination may be effected by passing gaseous chlorine over finely divided solid interpolymer or by forming a solution, dispersion or cement of the interpolymer in an organic solvent or diluent such as a hydrocarbon or halogen derivative thereof, e.g. methyl chloride, and adding the chlorination agent.  The product may be compounded with the usual vulcanizing ingredients and cured.  It may also be mixed with natural rubber, polychloroprene, polybutadiene, copolymers of chloroprene, isoprene or butadiene with each other or with styrene, acrylonitrile, acrylic and methacrylic acids and their alkyl esters, vinyl pyridine, and vinylidene chloride. Adhesive cements may be made from the interpolymer, channel black and n-heptane.ALSO:Natural rubber is mixed with vulcanizing agents (sulphur, mono- and diheptyl diphenylamines, furnace black, zinc oxide, stearic acid, mercapto-benzothiazole, di-ortho-tolyl-guanidine and sulphur are specified) and an isoolefinpolyolefin interpolymer which has been after-treated with chlorine (see Group IV (a)) and cured.  30 parts natural rubber to 70 of chlorinated interpolymer are used.  The chlorinated interpolymer may form a cement with n-heptane and channel black and be used to bond butyl-type rubbers to natural rubber.
Patent GB-1243172-A (GB)
Title: Improvements in or relating to swash plate type pumps and motors
Inventor: FLANAGAN KEVIN
IPC: F01B1/06
Filed: 1967-07-12
Abstract: 1,243,172. Swash-plate pumps and motors. JOSEPH LUCAS (INDUSTRIES) Ltd. Aug.16, 1968 [July 12, 1967], No.32096/67. Heading F1A. In a pump or motor of the type in which a swashplate 12 engages the pistons in a rotating cylinder block, each spring-loaded piston 9 is hollow and slides telescopically on a stepped member 15 fixed to a ported end-plate 6 of the cylinder block, the annular spaces 19 formed between the members 15 and the cylinders being inter-connected so that leakage fluid contained in the spaces in use is expelled by pistons on their pressure stroke into the spaces 19 whose pistons are on their suction stroke to force the suction stroke pistons against the swash-plate 12. A lubrication passage 13 is provided through the ball end of each piston and communicates with a recess 14 in the associated slipper 11 for hydraulic balancing. The swashplate may be of adjustable inclination.
Patent GB-926739-A (GB)
Title: Therapeutic apparatus
IPC: A61N1/40
Filed: 1960-09-20
Abstract: 926,739. Electro-therapeutic apparatus. DIAPULSE MANUFACTURING CORPORATION OF AMERICA. Sept. 20, 1960 [Oct. 2, 1959], No. 32308/60. Class 81 (2). Therapeutic apparatus for administering pulsed high-frequency oscillations comprises a treatment head, movable to a position adjacent the desired part of the body and means for controlling the oscillation generator to determine the magnitude of the energy output. The apparatus is enclosed in a cabinet 5, Fig. 1, provided with controls 59, 36, 62 and having, at one side, an adjustable arm 7, at the free end of which the treatment head 9 is carried on a universal mounting. The main switch 15, Fig. 4, has " off," '' standby," and "operate" positions and when turned to the central position the supply mains, connected at L1, L2, cause energization of relay 16 which connects the supply to the power transformers 20, 21, 23, 22, supplying respectively heater current, grid bias voltage, H.T. for the oscillation valves and heater current for the rectifier valves 28, 29. After a delay dependent on a thermal switch 30, which actuates a relay 32, the 420 volt H.T. from transformer 21 is connected to the oscillation generator valves 74, 64 and mains are connected to the transformer 23 to supply 2100 volt H.T. to the output valves 88, 89, 90, 92. Moving the main switch to " operate " merely cuts-out a timing switch 34 which would otherwise switch-off the high tension supply after a predetermined interval. In the oscillation generator section 12 a crystal 70, energized through a valve 74 and tuned circuit 72, 73, oscillates at 6.78 mc/s. and its second harmonic is fed to a control valve 64, the purpose of which is to pass the oscillations in the form of pulsed bursts of oscillation, the pulse repetition frequency being determined by two valves 68, 78, connected as a cathode coupled multivibrator, through a coupling valve 83. Thereafter, the fourth harmonic, at 27.12 mc/s. is selected by a tuned circuit 85, 86, 87 and fed to power amplifier valves 88, 89, 90, 92, connected as two pairs in push-pull. The output is thence fed through a low-pass filter 97A to the tuned radiating coil 100 which is mounted in the treatment head. The period of operation of the multi-vibrator, and thus the ratio of pulse length to repetition frequency, is determined, by the voltage applied to the grid of valve 68 through a selector switch 60 while the amplitude of the oscillations passed to the output stage, and thereby the degree of penetration attainable by the output radiator, is controlled by the voltage applied to the screen grid of tube 64, through an adjustable switch 68.
Patent GB-1512973-A (GB)
Title: Radiationsensitive prepolymers and their use for the production of relief structures
IPC: C08F290/00
Filed: 1975-08-01
Abstract: 1512973 Relief images produced from radiation-sensitive prepolymer SIEMENS AG 1 Aug 1975 [2 Aug 1974] 32364/75 Addition to 1467226 Heading G2C [Also in Division C3]  A method of producing a relief image comprises imagewise exposing and dissolving out or stripping the non-exposed parts from a material comprising an organic solvent soluble, radiation-sensitive prepolymer which is a polyaddition or polycondensation product of (1) at least one polyfunctional carbocyclic compound and/or heterocyclic compound containing (a) at least 2 groups R capable of undergoing an addition or condensation reaction and (b) at least one organic radiation-reactive group COOR*, the or each group R* having the Formula:- where R" is H or CH3 and R' is alkylene, and the or each COOR* group being in the ortho-or periposition with respect to the group R, and (2) at least one polyfunctional carbocyclic compound and/or heterocyclic compound containing at least 2 groups capable of undergoing an addition or condensation reaction with the groups R. In the Examples the prepolymer is prepared from pyromellitic acid dianhydride, methacrylic acid 2-hydroxyethyl ester, thionyl chloride and 4,4 - diamino-diphenyl methane or 4,4'-diaminodiphenyl ether. The images obtained in the Examples are tempered for 20 minutes at 300C.
Patent GB-769462-A (GB)
Title: Improvements in or relating to railway track equipment including magnetically or inductively controlled railway track apparatus
IPC: B61L1/16
Filed: 1954-11-09
Abstract: 769,462. Railway track apparatus. SIEMENS & HALSKE AKT.-GES. Nov. 9, 1954 [April 15, 1954], No. 32461/54. Class 105. Magnetically or inductively controlled railway track apparatus, e.g. impulse axle counters 1, 2, is prevented from being influenced by stray magnetic fields, e.g. from train-lighting generators, by a plate F having a high magnetic permeability disposed between the rails 10, 20 at the level of the upper edges thereof and connected to the rails by magnetic elements G. The impulse devices 1, 2 disposed one in front of the other longitudinally of the rails, may be covered by cover strips D of material of high magnetic permeability and these strips are supported at the upper edges of the rails by angle members or deflectors E, Fig. 3, which protect the apparatus against parts depending from a vehicle. The strip F may be of such width as to leave a space between it and the cover strips D to enable the apparatus to be tested and adjusted. Preferably the plate F and cover strips D have a low retentivity.
Patent GB-174788-A (GB)
Title: Improvements in separators and collectors suitable for application to tops of chimneys
IPC: F23J15/02
Filed: 1920-11-18
Abstract: 174,788. Parker, A. Nov. 18, 1920. Dust &c., separating from air and gases.-Apparatus for separating heavy particles from smoke, air or other gases issuing from a stack, or other outlet has a conical body c enlarging upwardly and divided into three compartments e, f, g by the partitions j, k extending across the body c. The central compartment e is in communication with the top of the stack and is of approximately constant area throughout its length. Air or gases issuing from the compartment e are deflected by the two semicircular defectors and expanded into the side compartments f, g, and dirt settles to the bottom of these compartments. Outlets. m, n lead the collected dirt to pipes passing down the side of the stack. Baffles o, p further prevent dirt from being carried away by the gases as they emerge from the compartments f, g to escape through an annular passage i between the cover h and the body c. In modifications the deflector is of double angular form or the form of a single semicircle.
Patent GB-447328-A (GB)
Title: Improvements in or relating to the cracking of distillates from coal/oil mixtures
IPC: C10G9/02
Filed: 1934-11-13
Abstract: <PICT:0447328/III/1> The hydrocarbon distillates obtained by the carbonization of mixtures of solid and liquid carbonaceous materials in rotating retorts, e.g. as described in Specifications 393,601, 393,602, and 407,360, are cracked in the vapour or liquid phase at temperatures above 400 DEG  C.  A combined liquid and vapour phase treatment may be employed.  The preferred temperatures are 400--500 DEG  C. for liquid phase, and 500--600 DEG  C. for vapour phase treatment which may be carried out in the presence of water and catalysts.  The vapours and gases produced by carbonizing a coal/oil mixture in a rotating retort 11 are passed through an air condenser 13 to remove the higher boiling fractions and thence through a preheater 14 where the temperature is raised to 500--600 DEG  C.  The vapours are then mixed in a mixer 15 with a small quantity of gas formed in a previous operation and heated in a heater 16 to a higher temperature, and the mixture is cracked in a chamber 17, the products being separated in fractionating apparatus 18.  The products of higher boiling point are mixed with the condensate from the condenser 13 and used for mixing with fresh carbonaceous material.  A liquid phase treatment is also described.  Specification 400,234 also is referred to.
Patent GB-1033763-A (GB)
Title: Improvements in and relating to training flexible material about packages and the like
Inventor: LANGFORD OSWALD VICTOR
IPC: B65B13/12
Filed: 1963-08-19
Abstract: 1,033,763. Bundling machines. SEAL-LESS STRAPPING Ltd. July 29, 1964 [Aug. 19, 1963], No. 32764/63. Addition to 1,031,516. Heading B8C. In a binding machine in which a supply of wire or strip is moved around a package, a vertically movable horizontal beam 15 (Fig. 2) supports a spring-loaded bight-tightening arm 35 having a lateral spring-loaded finger (Fig. 9, not shown) to engage the bight and ultimately release it when the slack is taken up. The beam prevents any substantial vertical movement of a package P as the tie B is drawn about it and may be fixed to vertical poles 16 by grips (Fig. 4, not shown) which are operated from one end of the beam by the lever 20. The grips 19a, 19b allow the beam to move freely downwards but are self-closing against upward movement of the beam. The strip 23 which controls the grip 19b may also serve as additional clamping means for the package since it may be lowered below the beam 15 (Fig. 6, not shown). The beam is kept horizontal by a pantographic linkage 24-28 and may be provided with a device 29 to prevent sideways movement of the package, consisting of a series of plungers 31 (Fig. 7, not shown) urged downwardly by a series of springs 32.