baber/WOPTO huggingface dataset:
Patent GB-1404935-A (GB)
Title: Electrical circuit programmers
IPC: G04C23/26
Filed: 1971-09-02
Abstract: 1404935 Time switches SATCHWELL CONTROLS Ltd 1 Dec 1972 [2 Sept 1971] 41021/71 Heading H1N A programmer for controlling a circuit during an overall time cycle which is divided into a number of predetermined periods comprises a switch means for the circuit, a plurality of switch operating mechanisms for the switch means, each said mechanism being actuable by a timer device for the duration of a respective different one of said predetermined periods and having an associated control means manually and selectively positionable to allow or prevent actuation of the respective mechanism by the timer device. As shown two circuits (for example, for central heating and hot water systems respectively) are controlled by respective microswitches 24 and 25, each having a rocker bar 26, 27 whereby any one of a plurality a spring fingers 22 and 23 can actuate the associated switch. The fingers 22, 23 are in the form of teeth of comb-like members 20, 21, superimposed to provide twelve pairs of fingers, each pair biased towards a respective one of twelve cams 11 on a shaft 10 which revolves once in twenty-four hours. Each cam 11 has a cut-out 13 of arcuate length equivalent to one of the discrete periods making up a twenty-four hour cycle as indicated above an opening 2 in a control panel 1. Associated with each pair of fingers 22, 23 is a slider 5 selectively positionable in the said opening 2 in one of three positions A, B and C. In position A both fingers 22 and 23 are allowed to actuate their switches 24 and 25 when the tongue 29 enters its associated cut-out 13. In position B however, a lateral pug 21 on slider 5 engages beneath a hool 30 on finger 22 and prevents movement of that finger, while in position C a hook 30 on finger 23 is also engaged by another lug 31 and movement of both fingers is prevented. A setting knob 41 and time scale 42 allows synchronization of cams 11 with the time of day. A multi-position slider 40 may be arranged as a manual override to hold the bars 26, 27 in the ON or OFF position selectively. More than two circuits may be controlled by providing additional microswitches and spring combs.
Patent GB-1516838-A (GB)
Title: Vehicle headlamp assembly
IPC: B60Q1/068
Filed: 1974-09-21
Abstract: 1516838 Mounting vehicle lamps LUCAS ELECTRICAL Ltd 3 Sept 1975 [21 Sept 1974] 41219/74 Heading F4R A headlamp assembly comprises a light unit 10, a support member 11 adapted to be mounted on the vehicle, and means adjustably mounting the unit on the member, the means including an adjusting screw 13 engaging a nut 14 fixed to the member, a bush 15 slidable longitudinally on the screw, a manually operable cam 18 pivoted on the bush about an axis 16 perpendicular to the screw, and a cam follower 20 secured to the unit and biased by a spring 21 into engagement with the cam. The cam has a plurality of flat, mutually inclined surface portions which lie at different distances from the axis 16 so that when it is rotated, either by a lever 17 or through a Bowden cable by a knob in the driving compartment, it tilts the unit in a vertical plane.
Patent GB-1166453-A (GB)
Title: Improvements in and relating to Space Heating Apparatus
Inventor: MYSON ROBERT ERNEST
IPC: F28D1/02
Filed: 1965-09-29
Abstract: 1,166,453. Unit air heating apparatus. MYSON HEAT EXCHANGERS Ltd. 29 Sept., 1966 [29 Sept., 1965], No. 41406/65. Heading F4V. A space heater adapted to form part of a central heating system comprises twin cross flow fans 24 driven by a central motor 25 which blow air upwardly over heat exchange tubes 28, 30 into the room to be heated, the fans being controlled by a thermostat 44 such that the fans are cut off at a preselected temperature and heating continues only by convection. A second thermostat 31 switches on an electric heating element 40 if the temperature of the water in the heat exchange tubes 28, 30 falls below a preselected minimum value. Air entering the heater through a grille 20 is first filtered by a fine nylon screen filter (21, Fig. 3) above the grille. The crosssection of the air flow duct above the fans 24 increases due to the disposition of a baffle 36. An additional fan (not shown) may be included, driven by a second electric motor.
Patent GB-1330399-A (GB)
Title: Process for the production of photographic images
IPC: G03C1/64
Filed: 1971-09-07
Abstract: 1330399 Photographic processes AGFA GEVAERT A G 7 Sept 1971 [11 Sept 1970] 41592/71 Heading G2C A photographic process comprises the steps of imagewise exposing a photo-sensitive layer to produce in the layer a substance which catalytically decomposes "per" compounds (i.e. those which contain active oxygen), heating the layer with such a "per" compound and a solution of an organicalcohol and/or ketone followed by treatment with a reaction component for a dyestuff forming oxidation reaction. The dye so produced in the layer forms a direct positive image, the alcohol and/or ketone present accelerates the dye formation. The photo-sensitive layer may include metal compounds of groups Ib, VIII metals which under actinic radiation form catalytic metal nuclei. Metal complexes of group VIb or VIII metals which on exposure give, compounds capable of catalying the decompostion of the "per" compound, and compounds from which catalytic iodide ions may be split are also used. The alcohols and ketones may be present in form 0À1 to 80 by weight per cent of the total bath, the alcohol having at least one aliphatic hydroxy group e.g. secondary, tertiary aliphatic alcohols with 1 to 3 hydroxy groups. The ketone may be aliphatic or aromatic and keto alcohols may also be used; other substituents may be present. The "per" compound may be hydrogen peroxide, inorganic or organic peroxides and addition compounds of hydrogen peroxide may be used. The reaction components for the dye formation are amino, hydroxy or aminohydroxy derivatives isocyclic or heterocyclic aromatic compounds. Compounds which enhance dye formation but are incapable of dye formation alone may be added e.g. tetrabromohydroquinone. Leuco-dyes and vat dyes, which under oxidation are converted to dyestuffs are alternative additives. Mono or poly dyestuffs related to azines and quinonimines are produced. The dyestuff may be produced from two components by oxidative coupling, e.g. colour developers of the phenylenediamine, aminopyrazolone or carbocyclic or heterocyclic hydrazine series on the one hand and colour couplers of the phenol or naphthol series (cyan), indazolone or pyrazolone series (magenta) or benzoylacetanilide series (yellow) on the other hand.
Patent GB-1177257-A (GB)
Title: Method and Apparatus for Heat Treating Metals
Inventor: BAUMGARTNER CECIL ALVIN
IPC: C21D1/04
Filed: 1967-09-12
Abstract: 1,177,257. Electrostatic annealing and hardening. C.A. BAUMGARTNER. Sept.12, 1967, No.41666/67. Heading C7N. [Also in Division H5]  A metal part, e.g. of Cr, Nb, Ta, Mo, W, Ti, Be or alloy thereof, is treated by heating it to a selected elevated temperature, then cooling it e.g. to room temperature while impressing on the part an electrostatic charge of sealed magnitude and polarity, to alter selected physical properties of the part. When the metal is negatively charged during cooling, its ductility and malleability are improved; when positively charged, these properties are reduced. The part 38 may be disposed on one of two spaced electrodes 17, 18 disposed in a vacuum chamber 11 as shown. During cooling, there is applied between the other consumable electrode 18, e.g. of graphite or Cu, and the part which is earthed, a D. C . potential of predetermined polarity, e.g. using polarity reversing switches 29, and of selected value, e.g. using potential selecting switch 28 and adjustable transformer 21, insufficient to create an arc between the part and other electrode. Heating may be effected by applying between the electrodes a D.C. potential sufficient in magnitude to produce an arc manifested by a corona discharge enveloping the part. Alternatively the part may be heated by gas jets 46 or an electric induction heater (not shown). Heating and/or cooling may be carried out under sub-atmospheric pressure. For treating a Ti part engaged in a support 37, the chamber atmosphere preferably contains acetylene, e.g. introduced from source 53, during cooling to enhance its machinability; an oxygenrich atmosphere, e.g. introduced from source 50, produces an opposite effect. The consumable electrode 18 may be continuously advanced to maintain a constant air gap G; the air gap may be varied by moving the electrode axially through gears 34, 35, as shown.
Patent GB-1046318-A (GB)
Title: Improvements in or relating to pulsed radars
IPC: H03K5/06
Filed: 1965-10-05
Abstract: 1,046,318. Pulse radar. TELEFUNKEN PATENTVERWERTUNGS G.m.b.H. Oct. 5, 1965 [Oct. 17, 1964], No. 42128/65. Heading H4D. The invention relates to a pulse compression or '' chirp " radar, wherein the side lobe pulses (see Fig. 2c, not shown) obtained in practice from the output of the pulse compression filter are much reduced relative to the main control pulse. The transmitted pulse, as well as the echo pulses, is passed through the compression filter E and provides the waveform of Fig. 2c (not shown) having a central narrow pulse in-between two side pulses of appreciable amplitude. A switch S, controlled from the transmitter, is opened during the control pulse, so that only the side pulses pass to a rectifier device B and to an integrator device M to provide a control signal dependent on the average amplitude of the side pulses. The control signal causes an adjusting device OP to send signals on lines X 1- X n  to the various stages in the filter E comprising a distortion correction filter, such that the amplitude of the side lobes is much reduced, and single echo pulses can be obtained at output Y 2 . Each stage in the correction filter may have its output fed to two summation devices via weighting potentiometers controlled by the signals on lines X 1 -X n . The outputs of the summation devices may be summed in quadrature to provide the output Y 2 . An artificial echo rather than the transmitted pulse may be used for determining the side pulse amplitudes.
Patent GB-1191278-A (GB)
Title: Improvements in Web-Handling
Inventor: HOWES TREVOR DENIS
IPC: D06C29/00
Filed: 1966-09-22
Abstract: 1,191,278. Feeding webs. STRACHAN &, HENSHAW Ltd. 9 Aug., 1967 [22 Sept., 1966], No. 42335/66. Heading B8R. The effective co-efficient of friction of a non- water-absorbent web of polyethylene or polypropylene is increased by spraying with water the surface of the web, which surface is to come into contact with a driven roller, belt or webroll.
Patent GB-1521087-A (GB)
Title: Electromagnetic radiation imaging apparatus
IPC: G02B17/06
Filed: 1976-09-29
Abstract: 1521087 Reflecting objectives BRITISH AIRCRAFT CORP Ltd 20 Sept 1976 [16 Oct 1975] 42386/75 Heading G2J An electromagnetic radiation imaging apparatus comprises concave and convex reflecting surfaces (mirrors 2 and 1) which face each other and are coaxially mutually spaced to leave an annular radiation entrance whereby light from a distant object is reflected first by the convex and then by the concave surface to form a real image. The image may be between the reflectors, see Fig. 1; or may be behind the convex reflector (a central aperture being provided for passage of the rays); or may be behind the concave reflector (a central aperture being left for the passage of the rays and an auxilliary mirror being provided between the curved mirrors). The image may be observed via an eye-piece, or recorded on film, or impinged on a T.V. camera, or be traversed (scanned) by an array of sensors. The device is of particular use for surveillance of the horizon.
Patent GB-954478-A (GB)
Title: Semiconductor capacitor devices
IPC: H01L29/92
Filed: 1959-12-14
Abstract: 954,478. Semi-conductor devices. WESTERN ELECTRIC Co. Inc. Dec. 14, 1959 [Dec. 24, 1958], No. 42420/59 Heading H1K. [Also in Division H3] A semi-conductor capacitor device, Fig. 1, comprises a P-type region 12 and an N-type region 11 forming a substantially planar P-N junction 13, at least one of the regions 12 having at least one external sloping boundary portion 17, 18 at an angle of from 1-5 degrees, preferably about 1 degree, with the plane of the junction, and each region 11, 12 having a substantially ohmic contact 14, 15 applied to a portion thereof of maximum thickness so that the effective plate area of the capacitor varies in accordance with the applied potential. The sloping boundary portions can be planar or curved. In the construction shown in Fig. 4 at least one sloping boundary portion contains a thin surface region 44, 46 of opposite conductivity type having a substantially ohmic contact 50, 51 thereon and forming a P-N junction 45, 47 therewith, the thin region being so located that the application of a reverse bias to its P-N junction will cause the depletion layer so produced to intersect that produced at the planar P-N junction referred to above. The contacts 50, 51 are connected to a common terminal 54. The device shown in Fig. 1 can be formed from a single crystal of germanium or silicon and in one example a square wafer of N- type silicon is coated on one face with a suspension containing boron pentoxide and heated in a diffusion furnace in an atmosphere of nitrogen at a temperature of 1300 C. for 12 hours to alter the conductivity to P-type to a small depth from the coated face. Successive nickel and gold platings are then applied to both faces of the wafer to form the contacts 14, 15. The sloping boundary portions 17, 18 are formed by abrasive lapping. Leads 21, 21 are attached to the contacts 14, 15 by thermo-compression bonding. A multiplicity of sloping boundary portions may be provided, ultimately forming a frustum of a cone, by etching or ultrasonic shaping techniques. A device having a single sloping boundary portion can be formed using the preferential alloying characteristics of single crystals, for example by alloying from a plated surface which is misorientated by about one degree from the (1,1,1) crystallographic axis to produce a substantially planar junction which is perpendicular to the (1,1,1) axis and makes an angle with the plane of the surface equal to the amount of the misorientation. The device shown in Fig. 4 can be formed from a body of single crystal silicon as in Fig. 1, the additional PN junctions 45, 47 being formed by diffusing an N-type impurity into an area limited by a mask of silicon oxide as described in Specification 864,705. An amplifier circuit using the variable capacitor device described above is described with reference to Fig. 6 (not shown).
Patent GB-1156937-A (GB)
Title: Paper Machinery
IPC: D21G1/00
Filed: 1966-09-23
Abstract: 1,156,937. Automatic position control. BLACK CLAWSON CO. Sept. 23, 1966 [Sept. 24, 1965], No. 42682/66. Heading G3R. [Also in Division D2] A retroactive system, for maintaining zero thrust in an arm 25 carrying a calender roller (20) adjacent one end and mounted on an eccentric pivot 46, 51 at its opposite end, comprises a strain gauge 65 mounted on the arm 25 in the control circuit of a console 66 actuating an electric motor 55 to drive a gear train 52, 56, 57, 58, 60, 50 which rotates the eccentric pivot 46, 51 to displace the arm 25 in the direction of its length and hence adjust the thrust in the arm 25. In a modification (Fig. 5) a similar control circuit includes a strain gauge (95) mounted on a boss (90) to rotate a screw (88) and displace a carrier for a roller (80).
Patent GB-1318362-A (GB)
Title: Laser apparatus
IPC: H01S3/02
Filed: 1970-09-07
Abstract: 1318362 Lasers AMERICAN OPTICAL CORP 7 Sept 1970 [5 Sept 1969] 42742/70 Heading H1C A laser rod and its associated resonator and flash lamp are mounted within a frame by a resilient potting material, thus providing a rugged laser which may be mounted on a rifle for rangefinding applications. The laser rod 31, e.g. of Nd glass, and the lamp 33, Fig. 2, are surrounded by a reflecting foil 51, and then a first coating of the potting material is applied to encapsulate all but the ends of the assembly, Fig. 3 (not shown). The resulting assembly is placed in the frame 74, Fig. 5, with the following optical components (left to right in Fig. 5): reflector 35, Pockels cell 41, polarizer 39, pumping light filter 43, reflector 37, pumping light filter 45 and a three lens telescope 46. Power supply components are mounted on a printed circuit card in the region 128, and the whole of the frame apart from the regions containing the resonator, Pockels cell and telescope is filled with further potting material to provide the required rugged laser. The power supply for the laser is derived from a small battery by converting its voltage to A.C., stepping the A.C. up and rectifying the A.C. The rectified voltage feeds two capacitors, one for the flashlamp and one for the Pockels cell, Fig. 10 (not shown). The connection of the Pockels cell to its capacitor is controlled by a multivibrator, a pair of S.C.R.s and a pair of thratrons such that it is energized for 0À5 microseconds during an intense part of the flashlamp output, Fig. 11 (not shown). The control signal which initiates the laser pulse also starts a clock pulse generator. These pulses are counted until the emitted pulse returns from the object whose range is being measured. The total counted is displayed as a direct reading of the range.
Patent GB-1281835-A (GB)
Title: Dry-shaving apparatus with resiliently supported shaving heads
IPC: B26B19/14
Filed: 1969-08-28
Abstract: 1281835 Dry shavers PHILIPS ELECTRONIC & ASSOCIATED INDUSTRIES Ltd 28 Aug 1969 [31 Aug 1968] 42925/69 Heading B4B The subject-matter of this Specification is identical with that described in Specification 1,281,834 but the claims are directed to a dry shaver having at least two shaving heads resiliently mounted so that their shear plates are relatively displaceable.
Patent GB-1471162-A (GB)
Title: Operation of a two-phase reactor
IPC: B01J8/00
Filed: 1974-10-03
Abstract: 1471162 Ion-exchange HOOGOVENS IJMUIDEN BV 3 Oct 1974 43015/74 Heading B1J In a process involving the step of passing a liquid upwardly through a bed of partioulate solid material in a chamber so as to cause a two-phase reaction to take place, wherein the said solid material in the absence of flow would sink through the liquid and the chamber is so shaped and the flow rate is such that, substantially throughout the time that the reaction is proceeding, plug flow is approximated through the chamber, the said flow rate is at least as high as the minimum flow rate required to hold the solid material against a barrier located above it as a single body compacted throughout its volume in the absence of any barrier in the chamber immediately below said body. The process is exemplified by the desalination of brackish water in which water already treated by cation exchange is treated with a weak base ion exchange resin which is regenerated with NaOH solution.
Patent GB-1268822-A (GB)
Title: Television decoder
Inventor: BAER RALPH
IPC: G09B7/06
Filed: 1969-03-13
Abstract: 1,268,822. Cathode-ray tube circuits. SANDERS ASSOCIATES Inc. 13 March, 1969, No. 43036/70. Divided out of 1,268,821. Heading H4T. [Also in Division G5] A "coded" display on the screen of a television receiver is "decoded" by means which includes a light-sensitive detector responsive to light from the display. The invention is described in connection with an educational system in which test questions together with a multiple set of answers, one of which is correct, are displayed on the screen of a television receiver (Fig. 1). A respective symbol 14, 16, 18, 20 is associated with each answer the symbols being "coded" by on-off flashing, at a rate which is not interpretable by the unaided eye, the rate of flashing of the symbol associated with the correct answer (symbol 16) being different from that of the other symbols. As described, symbol 16 is flashed an odd number of times (e.g. 61) the other symbols being flashed an even number of times (e.g. 60). In operation an examinee is required to select the answer deemed to be correct by positioning the light-sensitive detector of the "decoding" means in proximity to the symbol associated with such answer and if the selected answer is the correct one a steady light signal is given whilst, if incorrect, no light signal results. Fig. 2 shows the "decoding" means (all of which may be contained in an easily handled configuration, e.g. a gun) which comprises a photo-cell 24, a buffer amplifier 26, an amplifier and pulse shaper 28 and a flip-flop 30 which is initially set by switch 22 such that, when an odd number of flashes, each of which changes the state of the flip-flop, have been received, the latter is in the state in which an amplifier 32 conducts and causes lamp 34 to be lit to indicate that the correct answer has been selected. If an incorrect answer is selected the even number of flashes results in flip-flop 30 being left in its other state so that the lamp is not energized.
Patent GB-1364143-A (GB)
Title: Automatic pistol
IPC: F41A17/36
Filed: 1972-09-19
Abstract: 1364143 An automatic pistol COLT INDUSTRIES OPERATING CORP 19 Sept 1972 [24 Sept 1971] 43379/72 Heading F3C An automatic pistol comprises a frame 12, Fig. 1, a slide assembly 14 including a slide 18 and a barrel 16, having a barrel lug 54, Fig. 3, thereon, the slide assembly being movable between a forward and a rearward position and being biased towards said forward position, a slide stop latch 30, Fig. 4, which is mounted on the frame 12 for movement between a position in non-interfering relation to the slide assembly 14 and an operative position wherein the latch 30 is in obstructing relation to movement of the slide assembly 14 toward its forward position, and a releasable takedown pin 50 which is pivotally supported on the frame for rotation between a slide stop position, where the pin 50 is engageable with the barrel lug 54 of the slide assembly 14 and defines its forward position, and a slide release position, in angularly displaced relation to its normal slide stop position, the takedown pin 50 in its slide release position being in non-interfering relation to the slide assembly 14 to permit its removal from the frame 12, the takedown pin 50 having a manual actuating lever 60 engageable with the slide stop latch 30 simultaneously upon rotation of the takedown pin 50 into its slide release position to automatically activate the slide stop latch 30 and move it into the operative position for temporarily latching the slide assembly 14 to the frame 12 during slide removal. A spring 38 is supported on the frame 12 and engages the slide stop latch 30 for continuously urging it to the position of non-interfering relation, the spring 38 also maintaining the slide stop latch 30 against lateral displacement relative to the frame 12. The slide stop latch 30 includes a pin 34 which is supported for pivotal movement in the frame and an operating lever 32 which is secured to the pin 34 and has an abutment shoulder 72 engageable with the actuating lever 60 of the takedown pin 50 upon movement thereof into the slide release position. The operating lever 32 maintains the actuating lever 60 in its slide release position in operative position relative to the frame 12. A trigger pin 24 is supported in an opening in the frame, the operating lever 32 overlying the opening and serving as a one-way stop continuously maintaining the trigger pin 24 in assembled relation to the frame. The slide assembly 14 includes interlocking means 74, Fig. 1, having a receiver portion for receiving at least part of the actuating lever 60 which is rotated by the slide assembly 14 to a pre-selected position relative to the frame 12, the interlock means 74 preventing inadvertent actuation of the takedown pin 50 to the slide release position and permitting it to be actuated when the slide assembly 14 and frame 12 are in the preselected position, this being when the slide assembly 14 is in its rearward position relative to the frame.