baber/WOPTO huggingface dataset:
Patent GB-1526250-A (GB)
Title: Waveguide lasers
IPC: H01S3/03
Filed: 1976-11-05
Abstract: 1526250 Lasers DEFENCE SECRETARY OF STATE FOR 5 Nov 1976 [26 Nov 1975] 48677/75 Heading H1C In a laser with an elongate waveguiding resonant cavity in which a gas discharge takes place, the cavity is formed in an electrically conductive material and has its wall surface, or surfaces, coated with a chemically inert and electrically insulating material of high dielectric strength. As shown the cavity is formed by a milled slot 2 in an aluminium block 1, the block and slot being hard anodized to provide the electrically insulating coating. A cover plate 4 of heat resisting glass closes the slot which is terminated at its ends by resonator mirrors 7, 8. The gas discharge in the resonant cavity is produced between distributed anodes and cathodes 5. Gas is introduced into the cavity from a source 10 through a hollow electrode. The gas mixture may be 4À36% Xe, 8À69% N 2 , 17À39% CO 2  and the remainer He. The cover plate may alternatively be formed of anodized metal. The metal block includes a hole 3 for a cooling fluid.
Patent GB-1235814-A (GB)
Title: Photographic shutter control mechanism
IPC: G03B9/62
Filed: 1969-10-03
Abstract: 1,235,814. Shutter controlling mechanisms. HATTORI TOKEITEN K.K. Oct.3, 1969 [Oct. 3, 1968], No.48806/69. Heading G2A. An exposure control mechanism for a photographic shutter has an inertia device for impeding the shutter closing action of a shutter operating member for one range of shutter speeds selected by an exposure selecting member, and an electric delay circuit which controls a member for releasing the brake device for a further range of shutter speeds. The shutter is mechanical delayed for the shortest shutter speeds, e.g. 1/60 sec-1/500 sec and electronically delayed for the longer shutter speeds, e.g. 1/30 sec-32 secs. Operation of shutter release lever 9b pivots lever 6 to disengage arm 6a from an abutment surface 4a of a driving cam 4, which under the action of a spring 5 rotates clockwise. Cam 4 has a fixed pin 22 which carries a driving lever 21, a recess 21a in the other end of lever 21 receives a bent flange 20a of a shutter driving ring 20. At the end of the opening sequence, a further abutment 4b of cam 4 strikes a bent flange 24a of an impeding lever 24 to cause pivoting of lever 24, rotation of a flywheel 29 and pivoting of lever 30 due to a fixed pin 29b of the flywheel striking a nose 30a of lever 30. Members 24, 29 and 30 thus constitute the inertia device. When the contact between surface 4b and bent flange, 24a comes to an end driving cam 4 is free to complete its rotation to close the shutter. The above action corresponds to an exposure of 1/60th of a second. Higher speeds are selected by clockwise rotation of a speed regulating ring 19 having a cam face 19h which engages pin 30d of lever 30 to pivot lever 30 away from the path of flywheel pin 29b for 1/125th of a second, and cam faces 19f, 19g for engaging a pin 24c of lever 24 to cause abutment surface 4b to abut bent flange 24a at successively later times to provide exposures of 1/250th and 1/500th of a second respectively. For exposure shorter than 1/60th of a second, a counter clockwise rotation of ring 19 causes engagement of a pin 18 fixed to a switch lever 16 to engage came surfaces 19e so that operation of shutter release lever 9b allows closing of a power source switch 13, 14. Electro-magnet 32 is thus energized to attract part 30c of lever 30, which via flywheel 29 and lever 24 holds the shutter open for a time determined by an RC timing circuit, the resistance of which is selected by a sliding contact 36 coupled to speed regulating ring 19.
Patent GB-1324437-A (GB)
Title: Cutter for office use
IPC: B26D7/01
Filed: 1970-10-15
Abstract: 1324437 Cutting apparatus BALMA CAPODURI & C SAS 15 Oct 1970 [15 Oet 1969] 48980/70 Heading B4B A paper cutter comprises a base having a support plate 1, a knife blade 3 pivotally mounted on the base, front and rear gauge plates adjustably mounted on the support plate and a clamping plate 7 for holding the material to be cut. The knife blade 3 is pivoted on the side wall of a box shaped base and co-operates with a blade 1<SP>11</SP> secured to the base. The base includes a support plate 1 against which the material e.g. sheet paper can be clamped by a plate 7 made from a transparent plastics material and secured to a bar 8 which is pivoted to the ends of levers 9, the other ends of the levers being pivoted on a rod 10 passing through the base; the clamping plate is held in a normallyraised position by means of plate springs 11, Fig. 2. A gauge plate 13 is slidably mounted by means of U-shaped ends on the support plate and may be locked in selected positions by means of knobs 14 secured on the ends of the rod 10 so that rotation of the knobs causes a threaded block 15, Fig. 4, to press via a plate 16<SP>1</SP> against the adjacent U-shaped end 1311 thereby causing the plate 13 to deflect and clamp against the support plate. The opposite end of the gauge plate is formed with a lug 17 which is held by means of a spring-loaded device 18, 19, Figs. 5 and 6 (not shown). The guage plate 20 is mounted on rails 21 which are slidable in guides 22 secured to a bottom wall 12, Fig. 2, of the base. The gauge 20 is locked in adjusted positions by means of pins 25 mounted on crosslevers 27, 28, Fig. 8 (not shown), the levers being movable by a screw-and-nut device 31, 35 actuated by a knob 29.
Patent GB-1417731-A (GB)
Title: Electronic sampling circuits
IPC: G11C27/02
Filed: 1972-10-24
Abstract: 1417731 Semiconductor amplifiers and gating circuits G & E BRADLEY Ltd 23 Oct 1973 [24 Oct 1972] 49028/72 Heading H3T The output of a sampling amplifier 20 is itself sampled at 15 and stored at 31, 18 (while the input 16 is not being sampled by a switch 11), and this stored voltage is then added to the input when input 16 is reconnected, in order to compensate for voltage or current offsets in the amplifier 20 input stage. When FET 11 goes off to disconnect the input, FET's 12 and 15 go on, so that C18 has one side earthed, and both are charged by the amplifier 20 output. Either amplifier 20, or the feedback amplifier 33 must invert. When FET 11 goes on, and FET's 12, 15 go off, the current from C31 is said to compensate for bias currents needed to be supplied at the input terminal 19 of amplifier 20, and C18 supplies a voltage offset to correct voltage differences arising between the two input terminals 19, 22 due to assymetries in the amplifier 20. In a feedback circuit to the second input 22, a FET 14 is on when FET 11 is on, and a FET 13 is on when FET 11 is off. An alternative feedback network is disclosed. The input 16 may be supplied through an alternator circuit (Fig. 2, not shown) in which FET 12 is replaced by two FET's (12a, 12b) providing selectively two levels of attenuation. Means are provided (FET 37, diode 38) for compensating leakage in the gating FET 11 and for limiting voltage excursions of the input.
Patent GB-1151896-A (GB)
Title: Method for Combating Lungworm in Animals.
Filed: 1966-11-02
Abstract: 1,151,896. Intratracheal injection of anthelmintics. MERCK & CO. Inc. 2 Nov., 1966 [3 Nov., 1965], No. 49162/66. Heading A5B. A method for treating animals infected with lungworm comprises intratracheally injecting into the infected animal a solution or suspension of 2 - (2' - thiazolyl) - or 2 - (4' - thiazolyl) - benzimidazole, in a pharmaceutically acceptable liquid carrier. The preferred form is an aqueous suspension of the active agent, which preferably also contain a suspending agent such as polyvinyl pyrrolidine, tragacanth or acacia, and may comprise 5 to 35% by weight of the total composition. The anthelmintic should be of a particle size of up to 10 microns. The method involves slow injection of the composition into the trachea at a point midway between the pharynx and the thoracic inlet, and is suitable for use in cattle, sheep, swine and cats.
Patent GB-1129158-A (GB)
Title: Coronary dilating compositions
Inventor: BOSSERT FRIEDRICH
IPC: C07D211/90
Filed: 1966-11-04
Abstract: 1,129,158. Pyridine compounds. FARBENFABRIKEN BAYER A.G. 4 Nov., 1966 [10 Nov., 1965], No. 49497/66. Heading C2C. [Also in Division A5] Dihydrodipyridyl derivatives of the general formula wherein R is H or C 1-3  alkyl, R<SP>1</SP> is C 1-4  alkyl and R<SP>11</SP> is H or C 1-6  alkyl or alkoxy, are prepared by reacting a pyridine aldehyde which may be substituted by C 1-6  alkyl or alkoxy groups with ammonia and acyl fatty acid esters of the formula in an organic solvent.
Patent GB-1414707-A (GB)
Title: Water sprinkler device
IPC: B05B3/16
Filed: 1973-10-24
Abstract: 1414707 Spray producers LAFAYETTE BRASS CO Inc 24 Oct 1973 49650/73 Heading B2F A water sprinkler device 10 comprises an impactor 20, pivotably mounted on a rotary sprinkler head 12 and having surfaces (21), (22) Fig. 3 (not shown), which react with a water jet issuing from the sprinkler head, a spring 23 biasing the impactor to rotate in a direction opposite to the reaction torque of the water jet whereby the impactor oscillates relative to the sprinkler head, and an impact receiver 31 supported by the sprinkler head and disposed for striking engagement by said impactor to receive therefrom and transmit to the sprinkler head impact forces for turning said head and thereby changing the water jet direction, said impact receiver comprising a slidable member (33) Fig. 9, (not shown), which is resiliently engaged by an adjustably preloaded spring (35) and thereby is operable to adjust selectively the intensity of the impact forces transmitted to the sprinkler head for a given level of reaction impulse applied to the impactor by the water jet. The impact receiver is movable relative to the sprinkler head from a position where it is located in the path of impactor movement to a position where it is clear of said path, thereby providing for counter clockwise and clockwise motion respectively of said head, the impactor striking a surface (15) Fig. 3 of an arm 14 extending from a nozzle 13 and a leg 24 of a bracket 18 on head 12 in said clockwise motion. For very low water pressure, spring 35 is fully compressed whereby impactor 20 continuously presses against the impact receiver in counterclockwise head motion. An alternative impact receiver (31A) Fig. 10, (not shown), comprises a screw (37) extending through a threaded hole in an arm 25 on the sprinkler head, a stop (38) on the end of said screw thereby being adjustable relative to the path of impactor movement.
Patent GB-1452497-A (GB)
Title: Method and apparatus for analysis of leukocyts
IPC: G01N33/49
Filed: 1973-10-25
Abstract: 1452497 Photo-electric detection of blood cells TECHNICON INSTRUMENTS CORP 25 Oct 1973 [15 Dec 1972] 49826/73 Heading G1A Cells having a particular optical absorption characteristic are distinguished from others in a flowing blood sample by measuring light scattered by cells using detector arrangements sensitive to a wavelength which is absorbed by the particular cells of interest and to a non-absorbed wavelength, and comparing the measurements. Measurement of scattering, which is found to increase with staining at the non-absorbed wavelength and decrease with staining at the absorbed wavelength, is used since it is difficult to distinguish lightly stained cells in particular, leucocytes, from unstained cells by prior methods. Light from source 1 is condensed at 20 and passes via stop 22 and lens 24, through the flow cell 10, and lens 26 to a dichroic minor or other beam-splitter 28 to form two paths. Scattered light only is selected by dark field reticles 30, 34 and is focused on to photodiodes 46, 40 by lenses 42, 36, filters 44, 38 being used to define the non- absorbed and (longer) absorbed wavelengths. The detector outputs are amplified 48, 50, cleared of random noise in thresholding circuits 52, 54 and peak amplitudes for each cell signal held by peak detectors 56, 58. The signals are compared by feeding via potentiometer 68 to a partitioning circuit 72, the output of which controls by means of AND gate 66 feeding of the signals to the Y and X inputs of a display 62 or to a counter 87 for counting the number of stained cells. A total population of stained and unstained cells is given at 92. By variation of the bias provided at 82, an angular threshold or mark may be provided on the display by which only stained cells, for example, are displayed. Counter values 87, 92 may be printed out and the display filmed.
Patent GB-1161059-A (GB)
Title: Furniture for Sitting or Lying Upon
IPC: F16B12/44
Filed: 1966-11-08
Abstract: 1,161,059. Seats; furniture joints. KNOLL ASSOCIATES Inc. 8 Nov., 1966 [8 Nov., 1965 (2)], No. 50063/66. Headings A4H and A4J. In a seat construction, a taut hammocklike seating surface 20 has lateral hems 21, 22 enclosing stiffly flexible steel bands 24, carried on a rigid base frame. The frame 1 consists of two inverted U-shaped side members, each cast in one piece from an aluminium alloy and joined by two stretchers 8, (19) of elliptical cross-section, extruded aluminium tubing 12. Cast metal end pieces 10 are provided to connect the stretchers 12 to the side members by means of glued spigot and socket joints (Fig. 6, not shown). The bands 24 are bolted to the side members at 32 (Fig. 5, not shown) and are interconnected by a nickel plated steel spreader bar (25) in a fold (30, Figs. 8-10, not shown) of open weave nylon seating material 20. Alternatively, in a chair without arm-rests 7a, (Figs. 11-13, not shown) the seating surface (70) is held taut by a cord (80) connected between a steel rod (78) and a transverse stretcher (59). In a chair having an integrally formed leg rest (Figs. 14-17, not shown), the end members of the chair frame may be integral castings or the legs (93, 94) may be cast separately and joined by tubular stretchers (96, 97). In a modification, the back-rest section may be of adjustable inclination (Figs. 18-30, not shown) and the chair frame may be supported, at the rear, on wheels (146). Sections (150a and 150b) of steel band (150) are interconnected by a hinge (152, Figs. 22-24, not shown).
Patent GB-1513998-A (GB)
Title: Alarm watch
IPC: G04G13/02
Filed: 1976-12-01
Abstract: 1513998 Alarm watches DAINI SEIKOSHA K K 1 Dec 1976 [2 Dec 1975 (2)] 50121/76 Heading G3T In an alarm watch, a surface of the soundproducing vibrator, or of means covering it, is open to the ambient air and is made water-repellent e.g. by coating with silicone or p.t.f.e. As shown the vibrator comprises a plate 10 carrying a magnetic yoke 11 which co-operates with a system comprising a coil 8, core 7, yoke 6 and permanent magnet 9. Vibrator housing 5 is screwed into a flange 12 on case body 1 or alternatively is fixed to the case back, Figs. 3 and 4 (not shown). The body has holes 13 to emit the sound. The outer surface of plate 10 has a water-repellent layer which may also extend over the surfaces defining the holes 13 and chamber 14. A gasket 16 waterproofs the vibrator.
Patent GB-1070881-A (GB)
Title: Detection of the hardness level of water of variable hardness
IPC: G01N21/53
Filed: 1963-12-19
Abstract: 1,070,881. Photo-electric determination of water hardness. SINTEX ORGANICO-INDUSTRIAL S. A. Dec. 19, 1963 [Dec. 19, 1962], No. 50188/63. Heading G1A. The water under test is mixed in predetermined proportions with a chemical reagent capable of setting up turbidity and samples are examined in a receptacle 3 by means of a light beam R2 which is dispersed in a transverse direction by the turbidity on to a photo-resistance 49. A second beam R1 from the same source is directed through an adjustable diaphragm 50, 51 on to a comparison photo-resistance 52. The two photo-resistances are connected in parallel with fixed resistances 79, 80 in a voltage-divider circuit, the junction being connected to the input anode of a thyratron or cold cathode valve 67. When the water attains a certain hardness level as determined by the diaphragm 50, 51, the value of the resistance 49 becomes less than that of 52, the valve 67 becomes energized and a relay 73 operates and actuates an audible indicator 75 and/or a member 76 controlling the flow of water. If the lamp source 46 fails, the valve 67 is influenced only by the resistances 79, 80 and an alarm signal is given, but this is distinguished from a normal alarm signal by the extinction of a pilot lamp 64. The water and reagent are fed to receptacles 6, 7 from which predetermined quantities are taken periodically by means of scoops 24, 25 are supplied by way of a container 9 to a mixing conduit 2 provided a number of upper and lower partitions 39, 40. Samples of the mixture are thus supplied to the receptacle 3 which an inlet conduit 41 and a discharge opening 42. An example of a suitable reagent is given which includes sodium oleate soap, monoctanolamine and a detergent of the alkyl sulphonate type.
Patent GB-1081437-A (GB)
Title: Apparatus for the protection of semiconductor devices
IPC: H03K17/08
Filed: 1964-12-09
Abstract: 1,081,437. Protective arrangements. COMPAGNIE GENERALE D'ELECTRICITE. Dec. 9, 1964 [Jan. 6, 1964], No. 50196/64. Heading H2K. A protective arrangement for a semi-conductor element, e.g. a rectifier, comprises a gate circuit which conducts a signal, derived from the voltage across the junction of the element, when a pulse, obtained when the current through the element reaches a predetermined value, is applied to the gate circuit. Since the voltage across the junction for a given current through the junction falls as the junction temperature increases, the output signal of the gate is representative of the junction temperature. This output signal is applied to a threshold circuit which effects the operation of a circuit-breaker, signalling device, or indicating device when the voltage falls below a value corresponding to the maximum permissible temperature of the junction.
Patent GB-1073683-A (GB)
Title: Improvements relating to bed bases
Inventor: SPENCER HENRY BRAITHWAITE
IPC: A47C20/00
Filed: 1963-12-20
Abstract: 1,073,683. Adjustable beds. DUNLOP RUBBER CO. Ltd. Nov. 19, 1964 [Dec. 20, 1963], No. 50558/63. Heading A4J. A bed base 11 has at least one section 12 hinged on a transverse axis 18 and has a longitudinally slidable mattress carrier 15 mounted on the hinged section. Longitudinal slots may be provided in the hinged bed section 12 or the slidable mattress carrier 15, in which are engaged bolts with heads wider than the slots mounted on the slidable mattress carrier or hinged bed-base section respectively. The slidable matress carrier may slide on the hinged bed-base section 12 by means of metal, nylon or other bearings.
Patent GB-1025440-A (GB)
Title: Alkyl-substituted pyrrolidines and amine-n-oxides derived therefrom
Inventor: FREMERY MAXIMILIAN IWAN
IPC: C07D207/46
Filed: 1964-12-14
Abstract: A light-duty detergent composition comprises an aqueous or alcoholic solution of one or more alkyl-substituted pyrrolidine N-oxides having from 13 to 23 carbon atoms and having alkyl substituents attached to the nitrogen atom and at least to one of the ring carbon atoms, optionally containing as further ingredients alkylbenzene sulphonates, higher alkanol sulphates and sulphonates, ethoxylated alcohol sulphates, ethoxylated alkylphenol sulphates, long chain alkanols or alknaoic amides, glycerol carboxylates, ether sulphonates, trialkylamine oxides, polystyrene, alkali and ammonium sulphates, silicates and tripolyphosphates.  The above defined pyrrolidine N-oxides may also be used as the active ingredient in solid heavy-duty detergent compositions.ALSO:The invention comprises alkyl-substituted pyrrolidines and their N-oxides having from 13 to 23 carbon atoms and having alkyl substituents attached to the nitrogen atom and at least to one of the ring carbon atoms.  The above compounds are prepared by reacting a hydrocarbon aziridine with a hydrocarbon olefin and, if desired, further treating the product with peracid or hydrogen peroxide to give the corresponding N-oxide.
Patent GB-1208437-A (GB)
Title: Clip e.g. for use in lightning protection systems
Inventor: SEWELL JOHN ADRIAN TUKE
IPC: F16B5/07
Filed: 1967-11-10
Abstract: 1,208,437. Clamps. W. J. FURSE & CO. Ltd. 11 Nov., 1968 [10 Nov., 1967], No. 51193/ 67. Heading E2B. A clip comprises two initially separate parts 1, 2 each of which is made of an appropriate resilient plastics material, one of which is adapted to be fixed to a mounting surface and which are provided with interengageable but disengageable formations enabling them to be secured together, these formations comprising two spaced studs 5 which are provided by one part 2, and two spaced complementary apertures 6 which are provided in the other part and are arranged to receive the studs, one or each part being formed with a channel 3 disposed between the studs or the apertures as the case may be, so that when the clip is assembled, it contains a slot for receiving an electrical conductor of strip form. As shown, the part 1 is the only one formed with a channel but each can have a channel if desired. The studs 5 are each shown with an enlarged portion 5a but each can have several. The projections can be provided on the part 1 if desired in which case the apertures are formed in the part 2. Each stud as shown is hollow but in a modification each can be solid.
Patent GB-1397259-A (GB)
Title: Shakeout and crushing apparatus
IPC: B22D29/02
Filed: 1972-11-07
Abstract: 1397259 Vibratory ball mills COMBUSTION ENG INC 7 Nov 1972 [9 Nov 1971] 51354/72 Heading B2A A vibratory ball mill permits reclamation of foundry sand from moulds and comprises a base 12 Fig. 1 supporting on springs 14 a chamber 18 and a motor 26 which drives an eccentrically weighed wheel 32 to impart orbital vibration to the chamber at e.g. 15 Hz. Three sieve clocks are provided in the chamber. Sand moulds with castings are placed on the top deck 36 which has bars 38 and large holes 40 e.g. 2"-3" dia. A second deck 42 below deck 36 with holes e.g. ¢" dia. catches e.g. tramp metal and bonded sand lumps which may be cleared out by opening a door 48. The deck 42 supports balls 46 to crush the sand and communicates with a chamber 52 Fig. 13 via a small aperture 60. The chamber 52 includes rods 62 to assist in disintegrating material therein. A wire mesh screen deck 66 is of e.g. 20 mesh provided below deck 42. Oversize from this screen is returned by an elevator 80 into a chute 50 which communicates with the chamber 52 where it is ground by the rods 62 and returned to the deck 42 via the aperture 60. Sand (the product) from the floor 72 is classified (by means not shown) via an elevator 88 and reused. Dust is extracted from the apparatus via an exhaust conduit.
Patent GB-1151429-A (GB)
Title: Traps for Removing Entrained Liquid from Gas Streams
Inventor: TOMLINSON JAMES WILLIAM
IPC: B67D7/02
Filed: 1965-12-04
Abstract: 1,151,429. Separating liquid from gas stream. HYDE AGRICULTURAL IMPLEMENTS Ltd. 30 Sept., 1966 [4 Dec., 1965 (2)], Nos. 51514/65 and 51515/65. Heading B1T [Also in Division F2] A liquid trap, designed to prevent liquid or froth carried in air withdrawn from a tank being filled with liquid manure from reaching the air pump, comprises a chamber 11 containing a lower inlet 12, upper outlet 13, three perforate transverse baffles 17, 18, 19 and a float operated valve 14, 15, 16 adapted to close the outlet 13. When valve 14, 15, 16 closes outlet 13, a valve 13a opens admitting air to the pump downstream. Chamber 11 has a removable transparent front and a liquid drain cock 12a. Float 16 and disc 14 may be adjustable on valve rod 15. Baffles 17, 18, 19 may have holes of half inch, eighth inch and quarter inch diameter respectively. The tank being filled by withdrawal of air may have a float-actuated air inlet valve which opens when the liquid level therein rises to release the suction so that tank fills no further.