baber/WOPTO huggingface dataset:
Patent GB-1276865-A (GB)
Title: A pancratic eyepiece of the huygens construction for use in microphotography
IPC: G02B25/00
Filed: 1969-11-21
Abstract: 1276865 Lenses ERNST LEITZ GmbH 21 Nov 1969 [12 Dec 19681 57131/69 Heading G2J A paneratic eye-piece of the Huygens construction comprising on a common optical axis a field lens 1, an eye-lens 4 at a fixed distance from the field lens, and on said axis between lenses 1 and 4 a first optical component 2 of negative refracting power and a second optical component 3 of positive refracting power, the components 2 and 3 being displaceable in the same or opposite directions between the real intermediate image plane 11 and a respective field or eye-lens. One of the movable components is displaceable linearly and the other non-linearly. Each moveable component may comprise a cemented doublet, the elements being of opposite refractive powers, or such a cemented doublet together with a spatially separate further lens element, Fig.3 (not shown). The eye-lens preferably comprises a first lens element and a second cemented doublet consisting of elements of mutually opposite refracting power. The eyepiece may be used in microphotography. Optical data for three examples is given.
Patent GB-1138797-A (GB)
Title: Thin film lateral bipolar transistor
IPC: H01L27/00
Filed: 1967-12-20
Abstract: 1,138,797. Thin-film bipolar transistors. HUGHES AIRCRAFT CO. 20 Dec., 1967 [3 Jan., 1967], No. 57776/67. Heading H1K. The structure shown is that of a thin film graded-base lateral transistor before the application of its electrodes. It is formed by overall deposition of P-type silicon on to a sapphire substrate 2 and etching the silicon to form isolated transistor islands. Each island is masked by the growth or deposition of silicon oxide 6 and its selective removal. Boron is diffused into the exposed parts and diffuses under the oxide layer 6 to form the P<SP>+</SP> part 4<SP>1</SP> of the base. A further part of the oxide layer is removed (the edge 6<SP>1</SP> is left intact) and phosphorus or arsenic diffused in to form the emitter 8 and collector 10 regions. Electrode metallization is applied to the exposed emitter and collector regions and to the base region through an aperture in the oxide film. The transistors (and their P<SP>+</SP>N<SP>+</SP>NP<SP>+</SP> equivalents) may be protected by their oxides or this may be removed and replaced by a glass coating or by a hermetically sealed container.
Patent GB-579772-A (GB)
IPC: G01B5/20
Abstract: 579,772. Gauging-apparatus. MILNER, H. L. Oct. 12, 1943, No. 16752. [Class 106 (ii)] [Also in Group XXXIII] A gauge for measuring differences in form and dimensions of an aircraft propeller blade from those of a standard blade comprises a member having an abutment 73 engaging (with point contact) the trailing edge of a blade section, a pair of scissors arms 78 pivoted on the member and carrying. longitudinally adjustable contacts 87, links 91 connecting the short scissors arms to a sleeve 93 on the member, a nut 75 acting on the sleeve against a spring to open the arms, and a surface 97 having a fixed angular relation to the bisector of the angle between the scissors arms. The gauge may be used in the integrating apparatus described in Specification 578,996, or the modification described in Specification 579,771 for calculating the thrust-moment effect of departures of the zero-lift line of the copy blade from the master. Specification 578,994 also is referred to.
Patent GB-1364650-A (GB)
Title: Structure of coils for use in transformer
IPC: H01F27/36
Filed: 1971-12-14
Abstract: 1364650 Transformers MATSUSHITA ELECTRIC INDUSTRIAL CO Ltd 14 Dec 1971 [17 Dec 1970 (12)] 58103/71 Heading HIT A transformer comprises a primary and a secondary coil winding, 100 and 200 (Fig. 3) respectively, each separately impregnated with resin, 7, e.g. polyester or epoxy resin, and individually subjected to thermosetting, and at least one conductive member, 16, which does not form part of any closed circuit and which is connected to one of the coils or to ground. The resins used for impregnation of the two coils may be of different types. The windings are each made in two sections so that the coil unit is still operative if one of the sections should develop a fault. The conductive member is preferably made of a flexible material, e.g. metal wire, vapour deposited aluminium film or metal foil. In one embodiment of the invention a conductive member, connected to earth, is fixed near the H.T. coil, the coils being arranged such that the conductive member is intermediate them. The space between the H.T. coil and the conductive member is determined either by suitably arranging both in the mould when impregnation takes place or by inserting between them insulating material, e.g. unwoven polyester cloth. In another embodiment of the invention, shown in Fig. 8, a coil bobbin 20 is used for mounting the H.T. winding on the iron core of the coil unit. Two conductive members, 16 and 16<SP>1</SP>, are disposed within this bobbin, one being connected to ground or to the L.T. winding and the other to the H.T. winding. Several other embodiments of the invention are described in which one or two conductive (screening) members are used and may be connected together or to the coils and are located in the resin casings of one or both coils or in a separate resin casing intermediate the coils.
Patent GB-1376089-A (GB)
Title: Atmospheric closed hot water tank system with separate expansion  control
IPC: B67D3/00
Filed: 1972-12-18
Abstract: 1376089 Liquid dispensers JET SPRAY COOLER Inc 18 Dec 1972 58300/72 Heading A4T [Also in Division F4] A hot water system for a beverage dispenser comprises a hot water tank 18 having a heater 22, a water inlet line 28 for the tank 18, means 44 for creating a low pressure region in the line 28 when water flows into the tank 18, an expansion reservoir 46 connected by a duct 48 to the low pressure region of the line 28, and a discharge line 42 from the tank 18. On heating the water in the tank, flow through the line 28 into the reservoir 46, thermally isolated from the tank 18, takes up the expansion of the water, preventing spillover through the line 42. To dispense a drink, an actuating button (56), Fig. 1 (not shown), is pressed, causing a solenoid valve 40 to open for a pre-set time. Water flows through the line 28 to the tank 18 to displace hot water from the tank 18 through the line 42 to a mixing chamber 14 for mixing with a flavouring medium, a proportioning assembly PA being provided for controlling the concentration of the medium. The pressure drop across the means 44, e.g. an aspirator, causes water from the reservoir 46, held at atmospheric pressure, to be drawn into the line 28 and thus into the tank 18. At the end of the dispensing cycle, the valve 40 is closed and either the water level in the reservoir 46 returns to equilibrium with the water in the tank 18, or, in the case of repetitive use of the dispenser, quantities of water continue to be drawn from the reservoir 46 at each actuation until the reduced pressure head in the reservoir 46 progressively reduces the quantity withdrawn on each occasion effectively to zero.
Patent GB-1452117-A (GB)
Title: Pressure fluid control unit
IPC: B62D5/08
Filed: 1973-12-18
Abstract: 1452117 Power-assisted steering mechanism K H THOMAS [trading as LANGEN & CO] 18 Dec 1973 [21 Dec 1972] 58560/73 Addition to 1,439,038 Heading B7H In a power-assisted steering control unit comprising two valve pistons 8, 9 which are actuated in response to relative rotation between an input shaft 1 and output member 2 connected by a torsion bar 3 and have reaction faces or separate reaction elements located in reaction chambers 19, 20 subject to the pressures in the chambers of a servo cylinder controlled by the valve pistons, the transmission of force from the input shaft 1 to the valve pistons 8, 9 is effected through tappets 10, 11 having lost motion and through springs 15, 16 interposed between the input shaft and the valve pistons in parallel with the tappets 10, 11. The tappets 10, 11 are actuated through adjusting screws 12, 13 in a lever 14 on the input shaft 1. The springs 15, 16 may be under slight stress even when relaxed to the extent of the lost motion. In another embodiment the torsion bar 3 is replaced by a pre-stressed C-spring, the pre-stress in the spring being greater than the resistance offered by the springs 15, 16 to displacement of the valve pistons by pressure rises occuring in the reaction chambers due to external forces acting on the servo cylinder.
Patent GB-1396719-A (GB)
Title: Method for electrophotographic exposure
IPC: G03G15/04
Filed: 1972-12-20
Abstract: 1396719 Screened exposure RESEARCH LABORATORIES OF AUSTRALIA PTY Ltd 20 Dec 1972 [24 Dec 1971] 58944/72 Headings G2H and G2M In a method of electro-photographic recording a charged photo-conductive member is exposed twice before development, one of said exposures being through both a continuous tone transparency to be copied and a patterned screen and the other of said exposures being through the continuous tone transparency only. The image so obtained may be developed with a coloured toner and transferred to a receiving surface. The process may be repeated to produce multi-colour prints.
Patent GB-1411089-A (GB)
Title: Telephone systems
IPC: H04M7/16
Filed: 1971-12-20
Abstract: 1411089 Party line systems, carrier substation circuits GENERAL ELECTRIC CO Ltd 11 Dec 1972 [20 Dec 1971] 59010/71 Headings H4K and H4R A subscribers carrier frequency telephone substation includes means to demodulate an incoming carrier frequency and to apply the resulting audio-frequency signal to a subset, means to modulate the audio frequency signals on to an outgoing carrier, an amplifier arranged to receive ringing tone and to apply it to the subset, operating means arranged upon detection of the incoming carrier to bias the amplifier from a state in which it consumes substantially no power to an active power consuming state and means to override said operating means to restore the amplifier to a passive state when the telephone handset is off-hook. As shown a subscriber line L is shared by an audio subscriber station 16 and a second subscriber station 20 employing carrier frequency transmission. The demodulator 34 includes a detector which on detection of ringing tone turns on an amplifier 62 which amplifies and couples that tone to subset B. When this subset goes off-hook, loop detec tor 64 responds enabling a switch 66 which inhibits operation of the amplifier 62 and enables incoming and outgoing speech amplifiers 50, carrier frequency outgoing amplifier 58 and oscillator 54 throughout the call. These arrangements reduce the power consumed from the local battery 61 which may be recharged via the line while no calls are in progress. The incoming signal level may be controlled by an automatic gain control circuit 46 which biases an attenuator (e.g. a diode operating at a non- linear point on its characteristic) to maintain the incoming carrier level at the demodulator constant. This bias is used to similarly control in inverse fashion an attenuator 56 in the transmit path in an attempt to maintain the level of the outgoing carrier at the exchange constant. Figs. 3, 4 and 5 (not shown), give details of units 34, 46, 62; 64, 66 and 30, 58 respectively.
Patent GB-1461590-A (GB)
Title: Reproducing device
IPC: G11B7/12
Filed: 1973-12-20
Abstract: 1461590 Optical playback THOMSON CSF 20 Dec 1973 [26 Dec 1972] 59042/73 Addition to 1451799 Heading G5R The optical playback arrangement of the parent Specification 1,451,799 is modified by the provision of four photocells 100, 101, 110 and 111 in the light detecting means. The cells are disposed about the axis 0Z of the reading light beam with two cells 100 and 101 disposed in line with a radius of the record disc and used as described in the parent case for positioning the light beam correctly and the other two cells 110 and 111 disposed in a line perpendicular to the radius and connected to a differential amplifier 112 supplying the output signal U(t).
Patent GB-1360180-A (GB)
Title: Anthelmintically active benzimidazole derivatives and process for preparing them
IPC: C07D235/30
Filed: 1972-12-27
Abstract: 1360180 Benzimidazoles FARBWERKE HOECHST AG 27 Dec 1972 [27 Dec 1971] 59666/72 Heading C2C Novel compounds (I)  in which R 1  represents an alkyl group having from 1 to 4 carbon atoms, R 2  and R 3 , which may be the same of different, each represents a hydrogen atom, a hydroxyl group, an alkoxy group having from 1 to 4 carbon atoms, a halogen atom, a trifluoromethyl group, an alkyl group having from 1 to 4 carbon atoms or a carbalkoxy group having from 1 to 4 carbon atoms in the alkoxy group, R 4  represents a hydrogen or chlorine atom and X represents oxygen or sulphur, are made by standard methods from diamines VII, themselves prepared from the corresponding 3- amino-4-nitro compounds. Pharmaceutical preparations possessing anthelmintic action contain (I) as active ingredient. Administration is orally or parenterally.
Patent GB-1242139-A (GB)
Title: Methods and machines for cutting blocks of semi-soft material, such as cheese
Inventor: JOHANSKI JAMES GEORGE JR
IPC: B26D3/18
Filed: 1968-12-17
Abstract: 1,242,139. Cheese cutters. SAFEWAY STORES Inc. 17 Dec., 1968, No. 59969/68. Heading A4C. Apparatus 10 for cutting blocks of semi-soft material, such as cheese, (11), Fig. 9 (not shown), encased in a liner of impervious film (12) in an elongated mould (13), Fig. 2 (not shown), comprises a roller conveyer 14 on to which the mould is placed, a cutting frame 24 with one or three cutting wires 27 adjacent to the conveyer, and a ram 30 which forces the cheese from its mould, which is held stationary by frame 24, and through the cutting frame 24, so dividing the cheese into longitudinal pieces, the cutting frame 24 being provided with cutters (28), (29), Fig. 12 (not shown), in alignment with wires 27 for cutting the film (12) in advance of wires 27. A turntable 16 with a lifting ram 20 is provided so that the cheese in its mould may be rotated for removal of the mould end covers (18), (19), Fig. 8 (not shown), and correctly positioned on the conveyer 14 for manual transmission, after removal of a strip (12a), Fig. 9 (not shown), of the film liner (12) from one end of the block, to a position with the latter end adjacent to cutting frame 24 and the other end adjacent to the ram 30. The ram 30 forces the cheese from the mould, which is tapered longitudinally with the smaller end adjacent to the ram, through the cutting frame 24, which cuts the cheese longitudinally, on to a second roller conveyer 31. The head of the ram is provided with vertical grooves 30a in alignment with the cutting wires 27 to allow the latter to completely pass through the cheese. The film liner is then stripped from the top and sides of the cheese. A vertical cutting frame 40 is positioned at one side of the conveyer 31 and is moved towards a fixed vertical plate 37 at the other side by a hydraulic cylinder 41 linked by a cable (42), Fig. 5 (not shown), to the underside of the frame 40 so that the cheese is cut transversely into smaller pieces which may then be removed for packing. The frame 40 has vertical cutting wires 39 with knives at their lower ends to cut the film liner on the bottom of the cheese in advance of these wires. The plate 37 has a series of slots 37a in alignment with the wires 39 to permit the latter to pass completely through the cheese. The rams and hydraulic cylinder are actuated by a high pressure oil system powered by a dual pressure air system, Fig. 6 (not shown). Much of the hydraulic and pneumatic circuitry used is common to the circuits used to actuate the ram 30 and the cylinder 41, suitable change-over valves being provided to actuate one or the other. The higher air pressure system is used only on the forward stroke of the ram 30 to conserve power.
Patent GB-1337580-A (GB)
Title: Reciprocating pump for concrete
IPC: F04B7/02
Filed: 1970-12-17
Abstract: 1337580 Reciprocating pumps L TARULLI 17 Dec 1970 [22 Dec 1969 59983/70 Heading F1A In a concrete pump wherein two pumping cylinders 8, 9 are alternately connected to a supply hopper 2 and to delivery pipes 31, 31a by an oscillating valve 3 actuated hydraulically in timed relationship with the pump pistons 10, 11, the valve 3 comprises two arcuate portions 4, 5 which alternately close off inlet ports 2a leading from the hopper and delivery ports 4a, 5a leading to the delivery pipes. An electrically, pneumatically or hydraulically actuated distributor valve 19 controls the supply of hydraulic fluid to actuating motors 16, 17 of the pumps 8, 9 and the actuating motor 7 of the valve 3. The front ends of the pump actuating motor cylinders 16, 17 are inter-connected by a duct 25 to provide a closed hydraulic system so that the forward stroke of one pump effects the return stroke of the other. The rear ends of the pump cylinders 8, 9 are connected by ducts 26, 27 with a water supply 28 so that the cylinders 8, 9 are continuously washed during pump operation. The pump cylinders are hinged to the valve housing to facilitate cleaning. The arcuate valve portions 4, 5 carry diaphragms which are hydraulically expanded to increase the seal when the valves are closed and are contracted during movement of the valve portions.
Patent GB-1457000-A (GB)
Title: Press filter
IPC: B30B9/24
Filed: 1973-12-28
Abstract: 1457000 Valves NIVOBA BV and T H HOLTHUIS 28 Dec 1973 60057/73 Heading F2V [Also in Division B1] Slurry is fed at a variable rate through inlet 26 into a housing 23, 24 having outlets 29a-29d leading to rotary drum presses of limited capacity, and fluid pressure applied at 27 to one side of an elastic diaphragm 25 urges the diaphragm to close the outlets, whereby as the slurry feed increases the diaphragm is progressively deflected by the resulting pressure build-up to uncover one outlet after another until the feed balances the capacity of the presses being supplied. If the feed rises beyond the total capacity of the presses a further outlet 30 is exposed which provides a by-pass. The fluid pressure on the diaphragm is limited by an adjustable pressure relief valve 28. Fig. 8 shows a flat diaphragm clamped between two housing members. In Figs. 1, 6, 7 (not shown) a tubular diaphragm is located in a tubular main duct with annular extensions leading to the outlets (6).
Patent GB-1280555-A (GB)
Title: Alimentary paste product and manufacture thereof
Inventor: SCHARSCHMIDT RUDOLF KARL
IPC: A23L7/10
Filed: 1969-12-30
Abstract: 1280555 Pasta GENERAL FOODS CORP 30 Dec 1969 [2 Jan 1969] 63390/69 Heading A2B A rapid cooking pasta comprises a flour which consists of a blend of by weight 45- 85% corn flour (which term includes corn meal), 15-40% soy flour, and optionally up to 30% wheat flour, the starch in said composition being at least partially gelatinised, or the product being otherwise in a quickcooking state. A hydrophilic colloid and other conventional ingredients, for example egg, high protein ingredients, vitamins, minerals, and other enriching agents may also be included.
Patent GB-2001032-A (GB)
Title: A portable distribution container
IPC: B65D25/22
Filed: 1978-06-09
Abstract: A portable distribution container (1) e.g. kcg is provided which has lifting and support chimes (4 and 5) removably mounted at opposite ends of the container to facilitate replacement in the event of damage. The chimes are of flexible plastics, rubber or a mixture thereof to cushion the container against damage and to reduce noise during handling. The chimes may be attached to the container by interengaging ribs or flanges and recesses with or without additional clamping bands, by screws, by pins which extend from the container and pass through the chimes, the pins receiving clamping nuts or being bent over to retain the ring, or by hooks or clips. <IMAGE>
Patent GB-2001985-A (GB)
Title: Penam and cephem production
IPC: C07D499/00
Filed: 1978-08-04
Abstract: A process for the preparation of derivatives of certain penicillanic and cephalosporanic acids is disclosed. Such derivatives have previously been prepared by reacting the relevant acid with a silylating agent, which product is then reacted with a suitably substituted  alpha -amino- phenylacetic acid or a reactive derivative thereof. Any silyl groups are thereafter removed by hydrolysis. Such known reaction was carried out at elevated temperature in the presence of a tertiary base as a proton acceptor. The present invention improves such process, which is carried out at room temperature and in the absence of a tertiary base by either utilising an amide carrying one or more alkylsilyl substituents, e.g. N,O-bis(trimethylsilyl) acetamide, as silylating agent, or carrying out the silylation reaction, using a known silylating agent, in the presence of a substituted amide, e.g. dimethylacetamide.
Patent GB-2027920-A (GB)
Title: Photographic silver halide developer composition
IPC: G03C5/305
Filed: 1978-08-11
Abstract: High contrast photographic silver halide developer compositions with increased solution stability (dish or machine life) comprise a superadditive development agent combination, sulphite ions and an amount of a contrast-increasing substituted indazole which provides a concentration of at least 65 mg/litre of the indazole in the working solution. The composition may additionally contain up to 60 g/litre sodium sulphite and/or 25-75 g/litre of sodium chloride and/or an amine, e.g. an alkanolamine.
Patent GB-2005360-A (GB)
Title: A reciprocating-piston engine including a crankcase split in a plane level with the crankshaft bearings
IPC: F16C9/02
Filed: 1978-09-25
Abstract: A reciprocating-piston engine including a crankcase split in a first plane (4) level with the crankshaft bearings (3) into an upper portion (1) and a lower portion (2). At least one of the bearings is provided with a thrust washer (6). In order to facilitate accurate and secure assembly of the or each thrust washer without the use of adhesives or the like, the or each thrust washer is diametrically split in a second plane (7) and its or their two parts are inserted into the crankcase so that the first (4) and the second (7) planes include an angle  alpha  of less than 90 DEG . As a result of this arrangement each of the two parts of the or each washer will engage the same portion of the crankcase so that they can easily be pre-assembled in one of the portions prior to the other one being bolted thereto. <IMAGE>
Patent GB-2006533-A (GB)
Title: Slotted Waveguide Array with Resonant Screen for Cross Polarisation Suppression
IPC: H01Q15/24
Filed: 1978-10-10
Abstract: A waveguide array in which the radiating elements are single or multiple slots (12-15) in the narrow wall of the waveguide (11). A resonant screen (16) of spaced reflector dipoles (17-21) is deployed in the near field of the array, the reflector dipoles (17-21) being oriented vertically in the case of an array radiating primarily horizontally polarized radiation for the reflection and hence elimination of the vertical polarisation component. The resonant dipoles of the screen are preferably conductive strips applied by printed circuit techniques on a surface of a radome enclosing the radiating aperture of the array. <IMAGE>
Patent GB-2008811-A (GB)
Title: Retaining spring for a wristwatch case
IPC: F16B21/07
Filed: 1978-10-12
Abstract: A retaining spring for fixedly retaining a case band and a back cover of a wristwatch case, which retaining spring comprises a fixing portion secured to one of the case band and the back cover, a weakened or torsionable portion extending from the fixing portion, and an engaging portion connected to the fixing portion through the weakened or torsionable portion and engaging with the other one of said case band and said back cover.