baber/WOPTO huggingface dataset:
Patent GB-1486669-A (GB)
Title: Photographic cameras
IPC: G03B9/64
Filed: 1975-03-13
Abstract: 1486669 Indicating operation of camera self-timer SEIKO KOKI KK 13 March 1975 [14 March 1974] 10577/75 Heading G2A  A camera has a counter 8 which prior to exposure counts a number of pulses dependent on subject brightness and memorizes the count, exposure time being subsequently controlled in accordance with the memorized count; the counter also being useable as a self-timer to delay the start of the memorizing count, e.g. by 9 seconds and the self-timer having an indicator 19-3 (Fig. 5). Specification 1486667 claims the above arrangement without the indicator. As shown, when self-timer switch SW4 is closed an electromagnet M2 is energized to lock the reflex mirror in the viewing position. On pressing the release, standard frequency pulses from a generator 4 pass through gates 10-4, 10-5, through all the stages of a frequency divider 7 and then through a circuit 13 to the counter 8. After 8 seconds stage 8-13 inverts and this turns on the L.E.D. 19-3 to warn the user that only one second remains. After 9 seconds both stages 8-10 and 8-13 are at "1" so an AND gate 105 inverts to "1", an OR 1-4 to "O", a NAND 1-7 to "1" and thus an output E3 becomes "O", turning off LED 19-3. Thus LED 19-3 lights up for just the last second of operation of the self-timer. Alternatively in Fig. 6 (not shown) the LED flashes throughout operation of the timer and in Fig. 7 (not shown) the LED lights continuously throughout operation. E3 turns off generator 4, energizes an electromagnet Ml to hold the shutter closing curtain, resets counter 8 and divider 7 and starts generator 4 again. Pulses are counted by counter 8 for the duration of a brightness representative pulse from a generator 5, the count attained also depending on film speed and aperture by selecting one of terminals 9-1 to 9-17. At the end of the brightness pulse, or when the last counter stage is reached, the count is stopped, displayed as a shutter speed (see Fig. 4), the electromagnet M2 is de-energized to release the mirror and open the shutter, a timing switch SW3 is opened, the shutter speed indicator is turned off, subtractive pulses are fed to counter 8 and when the count reaches zero a detector circuit 16 de-energizes electromagnet Ml to close the shutter. The self-timer can also be used when an exposure time is manually set by selecting one of terminals 9-1 to 9-18 to pre-set a count. After 9 seconds pulses from generator 4 are fed to counter 8 until the pre-set count is reached whereupon a detector circuit 17 de-energizes Ml to close the shutter. The specification also describes the use of the circuit without the self-timer with means for limiting the counting period if illumination is low, Specification 1479705, and the use of the circuit for making bulb exposures, Specification 1486668.
Patent GB-235997-A (GB)
Title: Improvement relating to asphalt composition coverings for floors, roofs and other surfaces
IPC: E04F15/12
Filed: 1924-04-29
Abstract: 235,997. Tassi, G. April 29, 1924. Asphalt paving, roofing.-An asphalt covering for a floor, root, or like surface a consists of a felt or similar backing b laid on the surface, rods or bars c, expanded metal or the like d spaced from the backing by the bars and secured by staples or other devices f, and asphalt e applied hot.
Patent GB-1464819-A (GB)
Title: Cutting-off machine-tool
IPC: B24B27/08
Filed: 1975-03-13
Abstract: 1464819 Severing SOC DES ANCIENS ETABS L GEISMAR and SOC TURRIPINOISE DE MECANIQUE 13 March 1975 [9 April 1974] 10606/75 Heading B3D A machine for cutting off rails or bars comprises a vice 4 for securing the machine to the rail R or bar and connected by a pair of pivotally interconnected arms 5, 6 to a motor carrying block 1 having an arm 2 provided with a grinding wheel 3. The arm 5 has two limbs 5 1 , 5 2  joined to a hub 8 pivotally mounted on the vice 4, and the arm 6 is pivotally mounted between the limbs 5 1 , 5 2 . The end of the arm 6 has a hub 9 rotatably mounting a shaft 10 which is rotatable by a handle 18 and has an extension 11 receivable in one or other of bores 13, 14 of a sleeve 12 having an internally threaded portion 17 for engagement with a screw thread on the end of the extension 11. The sleeve 12 is on the block 1 which houses the motor for driving the grinding wheel 3 carried at the free end of the arm 2 extending from the block. By engaging the extension 11 with one or other of the bores 13, 14, the machine can cut from one or other side of the rail. A spring 19 balances the weight of the grinding unit.
Patent GB-1179156-A (GB)
Title: Process for Preparation of Hexagonal Boron Nitride.
Inventor: BABL ALBERT
IPC: C10G73/40
Filed: 1967-03-07
Abstract: 1,179,156. Boron nitride. LONZA-WERKE G.m.b.H. 7 March, 1967 [9 March, 1966; 3 Feb., 1967 (2)], No. 10623/67. Heading C1A. The hexagonal crystalline form of boron nitride is made by mixing an oxygen-containing boron compound with an organic nitrogen compound, drying the mixture at 110- 350 C. and then heating the dried mixture for 5-90 minutes at 1600-2100 C. in a non- oxidizing atmosphere (e.g. nitrogen or argon) either in presence of an alkaline earth metal catalyst or in a vessel whose inner wall and/or base is covered with a layer of preformed hexagonal boron nitride. The reaction product is then cooled, ground, treated with water (which may be at 90-95 C.), filtered and dried. The " oxygen-containing boron compound " is defined as boric acid, boric oxide or a compound which forms boric oxide under the reaction conditions. Specified organic nitrogen compounds are melamine, urea and dicyandiamide. The starting materials may be mixed in a ratio of 1 mol. of boron compound (as B2O3) to 2-6 gram-atoms of N in the organic nitrogen compound, and the catalyst (e.g. calcium or magnesium nitrides) may comprise 0À2-10% by weight of the starting materials. The initial drying of the mixed starting materials may be carried out in air, nitrogen or ammonia. In further embodiments, the dried mixture of boron and nitrogen compounds may be ground or ground and pelletized (using a pressure of at least 100 kg./cm.<2>) before being heated to the reaction temperature. When a catalyst is used, it may be added to the mixture if starting materials between coarse and fine grindings.
Patent GB-513666-A (GB)
Title: Improvements in or relating to vehicle brakes
IPC: F16D65/22
Filed: 1938-04-07
Abstract: 513,666. Fluid-pressure-operated drum brakes. BENDIX, Ltd., and ROBERTS, G. P. April 7, 1938, No. 10627. [Class 103 (i)] In a vehicle brake, the separation of brake shoes mounted within a rotating drum is effected by a member movable at right-angles to the line of movement of the shoe-ends and actuated by a movable fluid-pressure cylinder working over a stationary piston. In the form shown a shoe-separating wedge a is slidably mounted in a cylindrical housing b which is secured to and extends through the back-plate c of the brake. The outer part of the member a is in the form of a hollow sleeve d rigidly connected with the cylinder f which works over a piston h having a rod g rigidly connected to the housing b by the pin k. The pin passes through slots b in the sleeve d. A longitudinal groove s permits escape of air from the inner end of the sleeve d. Compressed air is supplied to actuate the brake by means of a flexible pipe connected to the union n and the lug q permits attachment of a rod or cable for alternative mechanical operation.
Patent GB-106556-A (GB)
IPC: G01R13/00
Abstract: 106,556. McLeod, T. July 13, 1916. Order apparatus.-A signalling or other device, comprising two electrically-operated apparatus, one of which is controlled faster than the other by the movement of a single arm, and two separate resistances, is provided with a relay the circuit of which is periodically controlled by the moving arm, and which is adapted, when energized, to disconnect the faster device from its source of current, thereby allowing it to return to its normal position, and to establish a circuit which cuts a resistance section out of the circuit of the slower device, thereby causing it to advance a step. In the arrangement shown, a device b, indicating digits, is placed in a circuit containing a battery h, contact o, armature d, leads l, q, sectional resistance r, contact ranges s, a wiper e mounted on an arm p, and a lead k. A device c, indicating tens, is placed in a circuit containing a battery g, lead k<1>, sectional resistance r', contact range t, a wiper e<2>, and lead u. In connexion with the resistance r<1>, a second wiper c<1> is provided, and is connected to the armature d by the lead l. A magnet m, operating the armature d, is adapted to be energized from the battery h over the leads i, f, k each time the wiper c engages the tenth contact of each range s. The operation of the arrangement is as follows. As the arm p moves from its normal left-hand position, the sections of the resistance r are cut out, and the needle of the device b moves from 0 to 9. When the wiper c engages the tenth contact of the first range, the wiper e<1> engages the second contact of the range t, the wiper c<2> being still in engagement with the first contact of the range t. The engagement of the wiper e with the tenth contact of the first range completes the circuit of the magnet m, thereby breaking the circuit of the device b at the contact o and connecting the contact n to tho wiper e<1> through the armature d and lead l. The de-energization of the device b causes it to return to zero, while the connexion of the contact n to the wiper e<1> energizes the device c through the resistance r<1>, thereby causing it to move in its first operative position. The next movement of the arm p de-energizes the magnet m and again energizes the device b, so that it moves to its first operative position. The above-described operation is repeated until the two devices indicate the number required up to 90. Specification 104,777, which describes a signalling system, is referred to.
Patent GB-1174523-A (GB)
Title: Diamine Triazine Derivatives and their use in the Production of Cross-Linkable Polymers
Inventor: BRACHEL JIANSWILLI VON
IPC: C08F/
Filed: 1968-03-05
Abstract: 1,174,523. Amino-norbornenyl-triazine derivatives. CASSELLA FARBWERKE MAINKUR A.G. 5 March, 1968 [6 March, 1967], No. 10656/68. Heading C2C. [Also in Division C3] Norbornenyl derivatives of the general formula where R represents hydrogen or C 1-3  alkyl and R 1 , R 2 , R 3  and R 4  are hydrogen, methylol or etherified methylol groups of the formula -CH 2 OR 5  where R 5  is alkyl, alkoxyalkyl or cycloalkyl, are prepared by reacting cyclopentadiene or an alkyl derivative with a nitrile of an α,#-unsaturated carboxylic acid, condensing the 2-cyano-norbornene product with dicyanodiamide and metholylating the resulting 4,6 - diamino - 2 - (norborn - 2<SP>1</SP> - en - 51 - yl)- s-triazine. The products may be polymerized.
Patent GB-197663-A (GB)
Title: Electric radiator
IPC: F24H3/00
Filed: 1923-04-19
Abstract: 197,663. Bourgain, A. May 15, 1922, [Convention date]. Electric radiators.-An electric radiators comprises a casing 2, channel shaped in cross-section and provided with fins 10, and resistances 5 embedded in asbestos 6 or the like and held in place in the casing by a channel bar 7 slidably engaging the casing and secured thereto by clamping members situated in the median plane of the radiator. Three such radiators may be arranged in superposed horizontal fashion against a wall.
Patent GB-1011943-A (GB)
Title: Improvements in or relating to hydrodynamic brakes
IPC: F16D57/04
Filed: 1964-03-13
Abstract: 1,011,943. Hydrodynamic brakes. MAYBACH-MOTORENBAU G.m.b.H. March 13, 1964 [March 14, 1963], No. 10675/64. Heading F2E. In a hydrodynamic brake for use with change-speed gear on a rail vehicle, of the kind comprising rotating and fixed bucket shells, the braking effect is controlled by an annular member which slides axially in the stationary shell and which simultaneously obstructs the working space of the coupling and acts as a skimming device to draw off liquid in varying amounts according to the degree of insertion into the working space, whereby the filling of the brake is also varied. As shown, the brake consists of a rotating primary shell 11 having vanes 12, rotatable with a shaft 16 to be braked, a fixed secondary shell 13 having vanes 14, 15 and a series of filling tubes 23 communicating with an annular chamber 21 supplied with braking liquid at 22, and a combined obstructing and skimming device 24 in the form of a hollow annular ring slidable on a bearing body 30 to enter the annular space 25 between the vanes 14, 15 (see Fig. 2). The interior 28 of the ring 24 is connected with the working space by apertures 27 which are either circular holes arranged in the form of a sieve or axially extending tapered slots (Fig. 4, not shown). The space 28 is also connected by a telescoping tube arrangement 31, 32 with an outflow tube 33 incorporating a variable throttle 34 which constitutes a further means of controlling the brake when operated at a constant filling rate by determining the degree of filling for a given speed of the shaft 16 and a given degree of insertion of the device 24.
Patent GB-297656-A (GB)
Title: Improvements in sanitary closets
IPC: E03D11/02
Filed: 1928-04-12
Abstract: 297,656. Bast, E. April 12, 1928. Closet basins; discharge fittings; flushing; seatlids; urine receptacles; ventilating; dry closets.- A closet basin is divided by a partition 5, Fig. 4, to form a front urine compartment 6, and a rear soil compartment 8, the latter being normally closed by a slidable cover 9, and having an invertible bottom flap 16. The cover-operating means may operate a flushing valve, and may be connected with the flap-operating means. Connections 23, 24 lead to a ventilating pipe 22, a valve 33 operated by the cover being provided. A dry closet is provided with urine and soil receptacles 28, 27, Fig. 5.
Patent GB-1059155-A (GB)
Title: Preparation of alpha-tocopheryl quinone
IPC: C07D311/72
Filed: 1965-03-15
Abstract: Alpha-tocopherylquinone is prepared by contacting alpha-tocopherol at below its decomposition temperature with activated MnO2. The keto-ether oxidative dimer of alpha-tocopherol is identified as a by-product.
Patent GB-255175-A (GB)
Title: Improvements in or relating to processes for obtaining tricalcium saccharate
IPC: C13B35/04
Filed: 1925-04-27
Abstract: 255,175. Steffen, C. J., (known as Steffen, C.). April 27, 1925. Purifying saccharine liquids; refining sugar. - Tricalcium saccharrate poor in lime and rich in sugar is produced with a reduced consumption of lime from a cold molasses or impure sugar solution by subjecting the solution, immediately after the addition of the powdered lime, to a vigorous and thorough mixing, the liquid then passing to a main collecting receiver. The liquid is circulated repeatedly through the apparatus until the desired amount of saccharate is obtained. In the process described, the cold dilute molasses or sugar solution is forced by a pump P through a pipe a to a container S where powdered lime is uniformly supplied to the rapidly flowing solution from an apparatus M. The liquid then flows to the mixing apparatus A and thence to the collecting receiver Q from which pump P circulates it again through the apparatus. A specific example of the process is described.
Patent GB-779404-A (GB)
Title: An improved carbon paper and method of manufacturing it
IPC: B41M5/10
Filed: 1953-04-21
Abstract: 779,404. Carbon papers. WAGNER VERWALTUNGS-GES., G., [trading as WAGNER, G. [FIRM OF]]. April 21, 1953 [April 29, 1952], No. 10978/53. Drawings to Specification, Class 100(4) A carbon paper which remains opaque in use and of which the two sides contrast with one another in colour and the raw tissue paper of which has a colour other than black has a thermo-plastic intermediate layer between the raw tissue paper and the colour surrendering layer. The rear side of the raw tissue paper is coated with a layer containing pigments and a binding agent. The intermediate layer may be made opaque by blackening it.
Patent GB-974836-A (GB)
Title: Electro-optical device
IPC: H03K17/78
Filed: 1961-03-27
Abstract: <PICT:0974836/C4-C5/1> <PICT:0974836/C4-C5/2> <PICT:0974836/C4-C5/3> <PICT:0974836/C4-C5/4> In an electro-optical device, Fig. 1, comprising a photo-conductive element 11 in series with light source 13 and an A.C. power supply 12, the light source being optically coupled to the photo-conductor whereby the device may be triggered on by a short duration light pulse from a separate source 15 and remains triggered on due to the optical feed-back between 11 and 13, the photo-conductive element is arranged to exhibit current undershoot (see Journal of Physics and Chemistry of Solids, Vol. 1, No. 4, 1957, pages 234-248), whereby, in response to the termination of a subsequent light pulse equal to or greater than a predetermined intensity and duration from source 15, the resistivity becomes for a time greater than normal and causes light source 13 to extinguish and the device to trigger off.  As illustrated, the light source comprises an electroluminescent element.  In another embodiment, Figs. 7 and 8 (not shown), a neon tube is used.  A display panel, Fig. 3, may be made of an array of devices as shown in Fig. 1 by forming between glass plates 32, 33 and transparent conductive layers 31, 34 an electroluminescent layer 35 bearing individual photo-conductive elements 30.  A picture is set up by scanning the panel by an appropriately controlled flying-spot scanner 39 and any changes necessary in the picture are effected by illuminating areas to be darkened by a slow scan. Alternatively, the entire display may be blanked by unfocused illumination of long duration or a high intensity scan and then a further picture imparted by a low intensity scan. Photo-conductive material said to exhibit the current undershoot phenomenon to a sufficient pronounced extent comprises cadmium selenide with copper and silver acceptor atoms and chlorine donor atoms.  In another form of device, Fig. 4, the photo-conductive element 41 is shunted by a normal resistive element 42 chosen so that the potential distribution in the circuit is such that the device is normally "on" with light source 44 (an electroluminescent element) producing light.  If light from a separate source 46 of sufficient intensity is now impinged on element 41 for a sufficient period and subsequently extinguished, the resulting rise in resistance above normal, due to current undershoot, extinguishes source 44 and triggers the device off. The device persists off only momentarily, for the photo-conductive element reverts towards its normal resistance and once again allows source 44 to come on. A device as described in connection with Fig. 4 may be constructed as shown in Fig. 6 by forming on a glass plate 61 in successive layers: a transparent tin oxide electrode 62, an electroluminescent element 63, an insulator 64, a photo-conductive element 66 and a resistive element 67 formed of tin oxide.  A hole 65 in insulator 64 allows a common connection to be established between elements 63, 66 and 67.
Patent GB-1116841-A (GB)
Title: Improvements in or relating to apparatus for and a method of mounting tiles on a base
Inventor: CAHOON HENRY STEWART
IPC: E04F13/08
Filed: 1964-03-17
Abstract: 1,116,841. Latch fastenings. REED CERAMIC PANELS Ltd. 17 June, 1965 [17 March, 1964], No. 11153/64. Heading E2A. [Also in Division B5] In an apparatus for mounting tiles on a base, plate 12 is superimposed on setting plate 11 and secured thereto by latching means 22 carried on the end of a support arm 20 and in the form of a substantially L-shaped hook 23 pivotally mounted on a spindle 4 which engages arm 13.
Patent GB-1057067-A (GB)
Title: Production of ductile metal wheels
IPC: B60B11/04
Filed: 1963-10-16
Abstract: 1,057,067. Making wheels; extruding; forging; stamping. REYNOLDS METALS CO. Oct. 16, 1963 [Oct. 24. 1962], No. 11179/65. Divided out of 1,057,066. Addition to 971,259. Headings B3A, B3H, B3P and B3Q. A method of making a wheel, particularly a vehicle wheel, of ductile metal comprises pressing a blank between coaxial punches 248, 264 to cause backward extrusion over the punches to produce a pair of cylindrical walls 72, 78 extending in opposite directions from a central web 80, the walls having integral longitudinally extending ribs 288, 290 which are in alignment in the opposite walls. The Specification also includes claims for the apparatus and the wheel. The subject matter is identical with that of Specification 1,057,066.
Patent GB-1100703-A (GB)
Title: Improvements in or relating to memory storage elements
Inventor: FELDTKELLER ERNST
IPC: H01F10/32
Filed: 1965-03-17
Abstract: 1,100,703. Magnetic storage devices. SIEMENS A.G. 17 March, 1965 [17 March, 1964; 25 May, 1964], No. 11225/65. Headings HlH and H1T. A magnetic element for a memory store comprises a plurality of thin magnetic layers 5, 6, 7, 8, e.g. of permalloy, arranged in a stack and separated by thinner layers of substantially non-magnetic material 9, 10, 11. The layer 9 may separate the stack into two groups of layers and may be of silicon monoxide or of metal. The layers 10, 11 may be of conducting material such as gold, copper, aluminium, chromium or tin, of an oxide of silicon or of a mixture of several metals with possibly one or more insulating substances. The separating layers may be made inhomogeneous, e.g. in parts the mixture of a metal and silicon oxide, of which they may be formed, may be mostly metal and in other parts may contain little metal. The carrier layer 12 may act as a return path for a read-out line.
Patent GB-467757-A (GB)
Title: Inhibition of crystallization in coal tar distillates
IPC: C10C1/00
Filed: 1936-04-20
Abstract: The crystallization of naphthalene, anthracene, phenanthrene and the like from liquid coal-tar distillates is inhibited by the addition of a small quantity of a Friedel-Crafts reaction product prepared according to Specification 463,014, preferably that from stearyl chloride, and a coal-tar fraction boiling between 400 and 500 DEG C., especially red wax.  In examples, there is added to coal-tar distillates 0,5 per cent of such compounds, but 0,1 to 5 per cent may be used.
Patent GB-783456-A (GB)
Title: Improvements in or relating to arrangements for determining network insertion loss
Inventor: CAMPBELL CHARLES FRANCIS
IPC: G01R27/28
Filed: 1955-04-20
Abstract: 783,456. Insertion loss measurement; voltage measurement. AUTOMATIC TELEPHONE & ELECTRIC CO., Ltd. Dec. 19, 1955 [April 20, 1955], No. 11355/55. Class 37. Insertion loss of a network is measured by energizing the network and a calibrated adjustable attenuator from a variable frequency oscillator, and connecting a calibrated adjustable phase-shifting means to combine the attenuator output in antiphase with the network output at a null indicator; balance being achieved when the attenuator and the network outputs are equal and opposite in phase. A variable-frequency oscillator excites test network N1 and attenuator N2 over series input impedances R1, R3 to energize respectively load impedance R2 and the centre-point of the primary of a hybrid transformer, whose remaining terminals are grounded over variable impedances R4 and R5; a variable capacitance C1 being connectible by switch S across either half primary. The secondary is connected in series with the network output across impedance R2 to the input of an amplifier feeding a null indicator; it being shown that by adjustment of R4, R5 and C1 the phase angle of the attenuator signal is adjustable to antiphase with the network signal, and by adjustment of the attenuator the signals are made equal in magnitude for a zero indication; the network insertion loss being then equivalent to the attenuator setting plus the insertion loss of the hybrid network determinable from the settings of R4, R5 and Cl.