baber/WOPTO huggingface dataset:
Patent GB-1398088-A (GB)
Title: Polymers and photoresist compositions containing them
IPC: G03F7/038
Filed: 1971-08-23
Abstract: 1398088 Photo-resist materials KODAK Ltd 17 Aug 1972 [23 Aug 1971] 39361/71 Heading G2C [Also in Division C3]  Positive and negative working photo-resist compositions are made by combining a polyester derived from at least two glycols and one or more unsaturated alicyclic-dicarboxylic acids, the glycol mixture containing from 6.25 to 25 mole per cent, based on the glycol content of one or more glycols having free carboxylic acid groups, the polyester having an acid number of from 40-90; with a diazoketo sensitizer and an aryl azide sensitizer respectively in aqueous alkaline solution. Diazoketo sensitizers are described in Specifications 1230771; 1230773 and 1331441; 1, 2-dihydro- 2-diazo-1-oxo-5(-4' azidophenoxy-sulphonyl) -naphthalene being exemplified. Aryl azide sensitizers include 2: 6-di (4-azidobenzylidene)-4- methyl cyclohexanone and 4:4'-diazidostilbene -2: 2'-disulphonic acid. Particularly useful sensitizers are described in Specifications 767985; 886100; 892811 and U.S.A. Specification 2940853. The polyester may be dissolved in cyclohexanone or 2-methoxyethylacetate and adding the appropriate sensitizers. Examples 9 to 23 describe the preparation and testing of typical photo-resist materials.
Patent GB-1293620-A (GB)
Title: Improvements in or relating to methods of anchor bolting
Inventor: ROBERTS GARETH
IPC: C04B40/06
Filed: 1970-08-15
Abstract: 1293620 Anchoring bolts ASPORLIAN Ltd 9 Aug 1971 [15 Aug 1970] 39426/70 Heading F2H A method of securing an anchor bolt 12 in a drilled hole C in rock or concrete comprises the steps of inserting into the inner end of the hole a mechanically expansible plug B, inserting a cartridge A of settable filling material into the hole after the plug B, and driving the anchor bolt 12 through the cartridge A and into the plug B to expand the latter into gripping contact with the wall of the hole. The plug anchors the bolt while the material released from the cartridge sets hard. The cartridge may contain a synthetic resin and a hardener in separate rupturable sections, but preferably is of the type described in Specification 1,293,619, comprising an inner rigid brittle tube 3 containing water 6, inside an outer rigid brittle tube 1, with a mixture of portland cement and high alumina cement in the space between the tubes 1, 3. Readily frangible end seals 2, 4 of polyester resin close the ends of the tubes 1, 3. The tubes are of polystyrene. The plug B is of polypropylene, slits 9 extending over most of its length. Alternatively the plug may have a fulllength split to allow expansion, and may have an external groove opposite the split so that the plug breaks into two halves on entry of the bolt. The plug may be serrated externally and in a further alternative form, may have internal longitudinal grooves to allow expansion. Several cartridges A may be used in a deep hole.
Patent GB-1046300-A (GB)
Title: Alloy steel
IPC: C22C38/44
Filed: 1965-09-15
Abstract: A precipitation-hardenable stainless steel has the following percentage composition:-Cr 11 - 13 Ni 9 - 11 Mo 1.5 - 3 Ti 0.1-0.5 and/or Nb 0.05-1 Al 0.5-1.6 C up to 0.03 Mn 0-0.2 Si 0-0.2 Fe and impurities the balance,  the composition being further restricted such that (a) 0.8 Cr + Ni + Mo lies between 20 and 23 (b) Al + Ti is not less than 1.9 and (c) the ratio of Ni to Al + Ti is at least 5:1. After solution treatment at 870-980 DEG C the steel is air cooled (with optional refrigeration and/or cold working) to bring it to the martensitic condition and then aged at 425-540 DEG C.
Patent GB-1479975-A (GB)
Title: Pulse rejection circuit
IPC: G01R29/027
Filed: 1974-09-10
Abstract: 1479975 Transistor pulse circuits NORTHERN TELECOM Ltd 10 Sept 1974 [12 Sept 1973] 39499/74 Heading H3T A circuit for suppressing short interference pulses comprises an amplifier A having a non- inverting input 12 grounded and an inverting input 11 connected thereto by a capacitor 16. When the input signal at 14 is positive, the amplifier output C is negative, keeping the low resistance path 17, 18 open. If the input signal changes to negative this path is blocked by the reverse bias on diode 17. The charge on capacitor 16 which is keeping the amplifier output negative flows away through resistor 15 until after a predetermined time it has fallen to a value where the output goes positive, switching on transistor 20. Thus providing the change of input level lasts for longer than the time set by capacitor 16, it appears in the output delayed by this amount of time, but if it lasts a shorter time it does not appear in the output at all. In modifications, Figs. 2a-2d, not shown, one or two diodes are connected across parts of resistor 15 (which may be a potentiometer) to provide different width thresholds for positive and negative going pulses. These modifications also vary slightly the width of the pulses that are passed.
Patent GB-1159957-A (GB)
Title: Improvements in or relating to Laminated Thermosetting Resinous Materials
Inventor: COBURN ROBERT VICTOR
IPC: B29C70/08
Filed: 1965-09-16
Abstract: 1,159,957. Thermosetting laminates. WILLIAM MALLINSON & SONS (MFG.) Ltd. 31 Aug., 1966 [16 Sept., 1965], No. 39598/65. Heading B5N. A thermosetting resin laminate comprises a core which consists of either (a) one or more layers of a thermosetting resin-impregnated woven or felted fibrous material sandwiched between wood plies, or (b) one or more wood plies sandwiched between layers of thermosetting resin-impregnated woven or felted fibrous material; said core being provided with outer layers of surface material, either or both of which consist of wood veneers or plastic veneers or plastic-impregnated paper or metal foil. The fibrous material may be wool felt. In one embodiment two layers of gaboon mahogany are sandwiched between resinimpregnated asbestos felt layers, and outer layers, one of aluminium foil and the other of walnut veneer or resin-impregnated kraft paper are provided. In the embodiment shown, two core plies 4, 4<SP>1</SP> of gaboon mahogany are sandwiched between layers 3, 31 of felt impregnated with phenolic resin, and outer layers 1, 1<SP>1</SP> of walnut veneer are provided. Layers 2, 2<SP>1</SP> of kraft paper impregnated with phenolic resin are present between the layers 1 and 3, and 1<SP>1</SP> and 3<SP>1</SP> respectively. The laminates are cured and shaped under heat and pressure in a mould and are heat- and water-resistant, and waterimpervious.
Patent GB-851875-A (GB)
Title: Improvements in or relating to the production of polymeric linear terephthalate ester films
IPC: B29C55/06
Filed: 1957-12-20
Abstract: A linear polymeric terephthalate ester film which has been substantillay uniformly oriented by stretching in each of two directions perpendicular to each other by a factor of at least 2,5 at 80-120 DEG C. and heat set at a temperature of from 150-205 DEG C. in one of said directions is further stretched by a factor of from 1,4-2,0 at 80-205 DEG C. and thereafter heat set under tension in one direction of stretch at 150-235 DEG C. Preferably the resulting linear polymeric terephthalate film has a tensile strength of at least 30,000 p.s.i. and a tensile strength at 5% elongation of at least 20,000 p.s.i. in the direction of elongation, a modulus of 700,000 p.s.i. and an elongation no greater than 50% in the same direction.  Polyethylene terephthalate is specified as a linear polymeric terephthalate, but the term includes any synthetic linear terephthalate ester polymer derived by reacting a glycol selected from the group HO(CH2)nOH where n is an integer from 2 to 10 inclusive with terephthalic acid or an ester forming derivative thereof or a low molecular weight alkyl ester thereof, e.g. the dimethyl or diethyl ester and up to 20% of a second acid or ester thereof, the second acid being a dicarboxylic acid such as isophthalic acid, diphenic acid, sebacic acid, hexahydroterephthalic acid, adipic acid, azelaic acid, naphthalic acid, 2 : 5-dimethyl terephthalic acid or bis-p-carboxy phenoxy ethane.  The resulting finally stretched linear polymeric terephthalate film may have a tear strength greater than 40 grams per mil in each direction. Specifications 743,503, 851,874 and U.S.A.  Specifications 2,714,569 and 2,728,941 are referred to.
Patent GB-1302313-A (GB)
IPC: G11C11/416
Filed: 1971-08-24
Abstract: 1302313 Data storage SIEMENS AG 24 Aug 1971 [23 Sept 1970] 39731/71 Heading G4C A matrix of storage cells SZ each comprising a pair of multi-emitter transistors T1, T2 connected as shown to a select line A and a pair of bit lines B corresponding to the two stable states of the cell, has a read-out and write circuit comprising matrix selection transistors T9, T10 in a first data amplifier IV1 which are connected between the bit lines B and a voltage U1 so that the bit lines are de-energized in the rest state of the memory, and transistor switches TX in an X address amplifier AVX which are connected to the selector lines A to reduce the voltage at the corresponding emitters of the transistors T1, T2 during the rest state so that only residual current flows through the address amplifier. Rest state (R).-Transistors T9, T10 are blocked and the bit lines B charge through D1, D2 and D3, D4. Transistors TX1, TX2 are blocked and diodes DX1, DX2 connect the selector lines to voltage U3 (-1À7 V) giving approximately - 1 V on the selector lines allowing rest current to flow through T1 or T2 and the selector line. Transistor T15 in the read-out amplifier LV is blocked. Read operation (L).-Transistors T9, T10 are caused to conduct (M) while T3, T8 are blocked. The differential amplifier T4, T5 is supplied with a selector signal A so that both these transistors conduct. The multi-emitter transistors T11, T12 of the second data amplifier IV2 conduct on receiving control inputs L and maintain the bit lines B1, B1 &c. at the same potential. The address amplifier transistor TX associated with the selected line A remains OFF, with the line A at the rest potential, but the remaining TX transistors are turned ON by input AX to connect U2 to the non-selected lines A. In the selected cell, e.g. SZ11, current is switched to the bit line emitter of the conductive transistor T1, T2 so that a 1 or 0 output from T11 or T12 is obtained, and, with T15 on in the read state, T13 or T14 conducts to give a corresponding output BA. Write operation (S).-Appropriate 1, 0 inputs are applied to T11, T12 and T3 or T8 is turned off so that one or other of the bit lines in each pair, e.g. B1, B1 is de-energized. Selection is otherwise as in a read operation. A higher write speed is obtained by using T11, T12 to reduce the potential of the bit line which remains energized, though mere disconnection of one of the bit lines would still cause current switch-over in the selected cell.
Patent GB-961210-A (GB)
Title: Improvements in or relating to coke manufacture
IPC: C10B57/04
Filed: 1960-11-25
Abstract: Coal or coke briquettes which when coked alone do not fuse together are coked in admixture with a particulate hard coal containing 14-40%, preferably 18-28%, of volatile matter and selected so as not to fuse with the coal or coke briquettes during the coking, and after the coking the coked briquettes are separated from the fine coke. The fine coal may be a coking or poorly coking coal and have a particle size up to 20 mm. The briquettes may be made from fine coke, e.g. the fine coke produced in the process or from non-coking or poorly coking coals, oxidized coals and non-coking or poorly coking coals in admixture with poorly-coking or strongly-coking coals. Specifically referred to are anthracite, lean coals with up to 14% volatile constituents, flame coal with more than 40% volatile constituents and forge coal with 14-18% volatile constituents.  The binders employed for making the briquettes may be pitch, tar or waste sulphite lye. The fine coal may be in admixture with e.g. anthracite and may be used in amount sufficient to fill the empty spaces between the briquettes.  The coking temperature is between 500 DEG  and 1300 DEG C. and the coking time from 18-24 hours.
Patent GB-1339488-A (GB)
Title: Channel selection system including variable capacitance diode  tuning
IPC: H04N5/44
Filed: 1971-09-01
Abstract: 1339488 Controlling selection of T.V. station MATSUSHITA ELECTRIC INDUSTRIAL CO Ltd 1 Sept 1971 [12 Sept 1970 (4)] 40811/71 Heading G4H [Also in Division H3] In a channel selection system having tuners 12, 13 each of which includes a variable capacitance diode 14, 15 a plurality of memory circuits 1, 2 each has four binary memories 20, 21, 22, 23 for storing one digit of a decimal number which identifies a particular channel, the memory circuits 1, 2 are connected through a matrix network MtX to a first set of logic gates 3 1 -3 62  which correspond to respective channels and the logic gates are connected to voltage imparting means 6, 7, 9 so that respective desired voltages can be fed to the variable capacitance diode 14, 15 of one of the tuners 12, 13. A channel number is read in at 0 and is stored in memories 1 and 2. Numeral indication tubes 38, 39 such as segment luminous indicators or gas discharge lamps indicate the channel number stored. The outputs from the memories 1, 2 energize a NAND gate 3 1 -3 62  corresponding to the channel selected and connect a voltage at J 1 -J 62  via a diode 9 1 -9 62  to a varicap diode 14, 15 of the VHF or UHF tuner 12, 13. AND gates may be used in place of the NAND gates. For VHF channels 1-3 the outputs from AND gate 27 1 -27 3  and NOR gate 28 select switch 31 so that the negative voltage 33 is connected to reverse bias a diode 18. The output from a NAND gate 30 controls switch 32 so as to connect the supply 35 to the VHF tuner 12. For VHF channels 4-12 the switch 32 remains operated by NAND gates 27 4 -27 12 , NOR gate 29 and NAND gate 30 to connect supply 35 to the VHF tuner 12 but the switch 31 changes over to connect positive voltage 34 to turn the diode 18 on so as to alter the tuning of the VHF tuner 12 for the higher VHF channels. For UHF channels exceeding 12 the output from NAND gate 30 changes over the switch 32 so that the supply 35 is connected to the UHF tuner 13. Each NAND gate 3 1 -3 62  may have diode input connections (22, Fig. 4, not shown) from the matrix MtX which operate as an AND function and feed via level shift diodes (dd) a transistor (tr) which operates as a NOT circuit providing an output to the resistor 7. These NAND gates 3 may be of integrated circuit form. The matrix Mtx may consist of selector switches (S1-S8) so that a NAND gate 3 may be selected to operate for a particular channel. Each timer 12, 13 has input stages, amplifying stages and local oscillator. The binary memories 2<SP>0</SP>-2<SP>3</SP>, may be a bi-stable circuit or a shift register circuit may be used. The system may be used for remote control of a TV receiver where selection is made by electric signals supplied to the memory circuits. The specification draws attention to Specification 1,208,849.
Patent GB-1018957-A (GB)
Title: Improvements relating to pressure reducing valves
Inventor: SLADE PETER
IPC: G05D16/06
Filed: 1962-10-26
Abstract: 1,018,957. Pressure gauges. BRITISH OXYGEN CO. Ltd. Oct. 29, 1963 [Oct. 29, 1962], No. 40816/62. Heading G1L. [Also in Division F2] A pressure reducing valve is combined with a device indicating the pressure on the H.P. side of the valve. The valve member 5, Fig. (not shown), seats on the H.P. side of seat 3 between inlet 1 and outlet chamber 2 and has a neck 7 passing through the seat and connected to a diaphragm 8 responsive to outlet pressure. A passage 20 in the valve member communicates the inlet pressure to a bore 21 in a member movable with the diaphragm. A spring loaded plunger 25 sealingly engaged in this bore extends through an opening in a cap 15 so that the inlet pressure is indicated by the amount that the plunger projects.
Patent GB-1012010-A (GB)
Title: Testing by ultrasonics
IPC: C08J3/07
Filed: 1963-10-16
Abstract: 1,012,010. Ultrasonic testing. AUTOMATION INDUSTRIES Inc. Oct. 16, 1963 [Feb. 28, 1963], No. 40891/63. Heading H4D. In an arrangement for testing a fluid for particle inclusions a pulsed ultrasonic beam 36 (Fig. 3) having a cross-sectional area varying with distance is passed through the fluid and echoes caused by reflections from particles in predetermined volumetric zones 40, 42-46 are separately detected and counted. This is achieved, as shown in Fig. 1, by means of gate generators 19-22 which gate on amplifiers 15-18 to which received echoes are applied for intervals corresponding to the reception of reflections arising respectively in the four zones 40-46 (Fig. 3), the amplifier outputs being supplied to counters 23-26 via discriminators 23<SP>1</SP>-26<SP>1</SP> which respectively, pass echo signals of increasing amplitude so that the first counter is activated by all echoes caused by particles exceeding a minimum selected size and each succeeding counter by echoes exceeding a greater amplitude (i.e. due to larger particles). Since in the majority of contaminated fluids the number of small (contaminating) particles vastly exceeds the number of large particles, overloading of the counter(s) responsive to low amplitude (small particle) echoes is prevented by making the volumes of the different zones (determined by the " gate lengths " and the divergence of the beam) inversely proportional to the probability of occurrence of the various size particles. Each counter, therefore, counts all particles exceeding different, predetermined, minimum sizes so that the distribution and occurrence of particles in each predetermined size range may be calculated. A test flow-cell is described with reference to Fig. 2 (not shown) and correction factors are developed to compensate for the effect, in any given zone, of large particles at a distance from the beam axis reflecting signals of the same amplitude as smaller particles lying near the beam axis.
Patent GB-1168992-A (GB)
Title: Improvements relating to Pattern Recognition Devices
Inventor: METZER KURT
IPC: G06K9/62
Filed: 1965-09-25
Abstract: 1,168,992. Pattern recognition. ELECTRIC & MUSICAL INDUSTRIES Ltd. 14 Dec., 1966 [25 Sept., 1965], No. 40902/65. Heading G4R. A pattern recognition device including stored representations of a plurality of different samples of each pattern to be recognized, the representations of different patterns being in different sub-groups of representations, comprises means for examining the stored representations to produce an indication that a feature is common to most of the stored representations and is not absent from most of each sub-group of representations and means for discarding that feature from storage in response to said indication. In the Figure, each row of store 1 stores indications (one bit per feature) of the features present in a standard versions of a possible character, for read-out and comparison in recognition device 2 with features of an unknown character. The three sub-groups consisting of rows 1-3, 4-6, 7-8 respectively relate to 1st, 2nd and 3rd possible characters. The rows are read out in turn, counters 6 totalling the numbers of occurrences of the respective features. Stores 8 receive the amounts the feature counts change during each sub-group. Each counter 6 then provides a "1" or "0" signal to a respective gate 9 if the count is above one threshold value or below a second (lower) value respectively. The stores 8 each provide a "1" or "0" signal to a gate 9 if the stored value is above or below a particular threshold value respectively. If all such signals from the counter 6 and stores 8 relating to a given feature are the same, the corresponding gate 9 prevents rewriting of the bits for that feature into store 1, by controlling inhibit gates 7 via mask store 10. The gate 9 also prevents that feature from being used in the recognition. The contents of store 1 may then be transferred to a smaller store. The store 1 may actually store a plurality of bits to represent each feature, feature recognition means at the store output producing the single bit referred to above from them.
Patent GB-989794-A (GB)
Title: Rotary mechanical seal
IPC: F16J15/36
Filed: 1962-03-07
Abstract: 989,794. Mechanical seals. CENTRAL RESEARCH LABORATORIES Inc. March 7, 1962 [March 27, 1961], No. 40936/63. Divided out of 989,793. Heading F2B. Sealing means to prevent leakage along a rotary shaft 27 where it extends through a barrier wall 14 comprises a housing 11 which is secured to the wall and encloses a mechanical seal comprising two sealing rings 38, 41 resiliently supported and urged axially into contact with two axially fixed sealing rings 25 and 30 respectively, the housing being supplied with gas under pressure which is monitored so that any seal failure is detected by flow of the gas. The rings 38, 41 are mounted in retainer rings 37, 40, each carried at one end of metal bellows 36, 39 which are connected in fluid tight manner at their other ends to opposite sides of a disc 35 secured to the shaft 27 which is rotatably mounted in bearings 28 and 31. The rings 25, 30 are spaced by a tube 29 and sealed by gaskets 26, 33 to the housing 11 which is sealed to the wall 14 by a gasket 22. Gas under pressure supplied to the interior of the tube 29 through tubing 18, port 17 and groove 16, port 21 in gasket 22, groove 19 and port 20 and port 42 in tube 29 is used to test the tightness of the seal; any loss indicating a faulty seal. In a modification, Fig. 2 (not shown), the axially movable sealing rings and bellows are non-rotatably fixed to the housing and the former contact opposite sides of a ring rotatable with the shaft.
Patent GB-1223125-A (GB)
Title: Improvements in or relating to cementious compositions
Inventor: BOWER NEVILLE RALPH
IPC: C04B28/04
Filed: 1967-09-08
Abstract: 1,223,125. Cement compositions. EVODE Ltd. 28 Aug., 1968 [8 Sept., 1967], No. 41094/67. Heading C1H. A dry composition contains Portland cement, a redispersible powdered p.v.ac. and a filler. The p.v.ac. is defined as a spray dried emulsion containing one or more surfactants. The specified filler is limestone.