baber/WOPTO huggingface dataset:
Patent GB-1367884-A (GB)
Title: Temperature compensating circuits for photoconductive cells
IPC: G01J1/44
Filed: 1970-09-30
Abstract: 1367884 Temperature compensation for photo-cells MULLARD Ltd 27 Sept 1971 [30 Sept 1970] 46573/70 Heading G1A In a temperature compensating circuit for a photo-cell 10 whose cell resistance (R) varies inversely with temperature and whose responsivity is a function of R, the photo-cell is biased to provide compensation for the resistance dependence of responsivity and extra compensating means are provided responsive to a change in R due to change in cell temperature to modify the operation of the photo-cell circuit so as to compensate for the resistance dependence of cell responsivity. In one embodiment Fig.1 (not shown) compensation is provided by an output transistor (2) whose base receives a suitable bias voltage. The extra compensation is provided by a positive feedback circuit, including a further transistor (8), which causes the bias voltage at the base of the first transistor (2) to change in response to changes in cell responsivity. In another embodiment, the extra compensation may be varied, Fig.2. The basic compensation is achieved by the circuit including transistor 11 and Zener diode 16. With index control 19 of the amplifying stage including transistor 18 at its upper setting, the emitter resistance 21 is completely decoupled. In this case the voltage output V o  provides maximum extra compensation for resistance dependance. With the control 19 at its other extreme, its resistance 21 tends to swamp the r e  of transistor 18. Hence there is negligible change of gain at the last amplifier stage with current variation, and a lesser degree of extra compensation is provided. To find the correct setting of control 19 for a particular cell it is necessary to make a number of temperature cycles, each time improving the setting by successive approximations. A final embodiment Fig.3 (not shown) provides extra compensation and includes an FET (26) to reduce current noise at the first stage. The final output is taken from the emitter of an emitter follower (31), which is used as a buffer stage to provide a low output impedance from the circuit. Suitable cells are lead sulphide or indium antimonide cells, which may be used for detecting modulated radiation.
Patent GB-1158440-A (GB)
Title: Colour Photographic Materials
Inventor: THOMPSON JOHN MARTIN
IPC: G03C8/24
Filed: 1966-10-18
Abstract: 1, 158, 440. Photographic materials. ILFORD Ltd. Oct. 13, 1967 [Oct. 18, 1966], No. 46586/66. Heading G2C. [Also in Division C2] A receptor sheet for use in a colour reversal diffusion transfer process comprises sheet material carrying an adherent layer of a polymeric filmforming substance which has incorporated therein at least one oxidizing agent of the general formula:- wherein R 1  is a long chain alkyl group of at least 12C atoms and R 2 , R 3  and R 4  are each alkyl aryl or aralkyl groups. The oxidizing agents particularly preferred are periodates and persulphates of trimethylhexadecylammonium, trimethyldodecylammonium, diethylbutyldodecylammonium or dimethyldecyldodecylammonium radicals. The oxidizing agent of the invention may be prepared in situ in the receptor sheet or the reactants may be present in separate layers which allow reaction to occur on development. In the examples trimethylhexadecylammonium persulphate was dissolved in n-propanol/dibutyl phthalate with the dispensing agent Aerosol OT and the mixture was diluted with a 10% solution of gelatine. The solution was then coated on white pigmented cellulose triacetate base previously coated with a thick layer of gelatine and was then dried. A receptor sheet comprising trimethyhexadecylammonium periodate is also prepared.
Patent GB-1587920-A (GB)
Title: Microfilm reader/printer
IPC: G06K17/00
Filed: 1977-11-09
Abstract: To reproduce any information-containing areas (86) on a screen (54) illuminated from the rear, a microfilm strip (60) can be fed in both directions between two driven spool elements (56, 58). Code symbols (89, 91, 92) arranged on the edge of the microfilm strip (60) are used to identify the information areas (86). These code symbols, scanned by a reading device in the apparatus, are compared, during film feed, with code symbols which have been input by push-buttons (74) and stored, in order to move the microfilm (60), by the reversible spool elements (56, 58), into the desired position. An apparatus of this type permits any information areas, for example of microfilmed pages of a catalogue or of a service manual, to be found quickly and without coming into direct contact with the microfilm. <IMAGE>
Patent GB-1454810-A (GB)
Title: Data processing apparatus
IPC: G06F13/00
Filed: 1974-10-29
Abstract: 1454810 Data processing; input-output INTERNATIONAL BUSINESS MACHINES CORP 29 Oct 1974 [26 Dec 1973] 46687/74 Heading G4A A plurality of sub-systems 16, Fig. 1, e.g. interface adapters IA, are connected in outgoing and incoming chains by parallel data paths 18, 20, the chains forming a closed loop with a data processor, and each sub-system has a simplex request line 22 to the data processor, whereby a service request by a sub-system can be granted by the processor without regard to the position of the sub-system in the loop. In the embodiment described, the interface with the processor is via a data buffer unit shown in Fig. 2. Pulsed requests from IA subsystems are stored in respective registers of a push-down queue 50, the nature of the requests, i.e. read or write, being indicated by an I/O register 52 which has one bit for each IA. For a write operation, the I/O register is tested for the presence of a write (0) bits and a write pointer is set in write frame assignment logic 56 to indicate which of the corresponding IA sub-systems has made the largest number of requests. The address of the selected IA is transmitted over the write address bus 28, is stored in a shift register 60 having a length with respect to the frame clock 24 corresponding to the loop delay, and is used to fetch a corresponding buffer control word BCW from a store 62, all this taking place in the first half of a frame clock cycle. In the second half of the clock cycle, a displacement field in the BCW, together with the IA pointer, is used to address a high speed data buffer 74, the parity-checked byte read out being placed on the write data bus 26. The data in buffer 74 is loaded as pairs of 64-byte blocks at the start of a write operation, the BCW displacement is incremented each time the BCW is accessed during a write operation, and a block transfer interrupt is initiated each time the BCW displacement crosses a 64-byte boundary. Assignment logic 56, on finding no write requests outstanding, searches a PUT queue 72 pointing to control words PQCW each of which includes a displacement for fetching a command byte from the high speed data buffer which is transmitted on the write data bus 26 after first transmitting the IA address on bus 28 and a command code on a control tags bus 32. A separate parity line 34 is provided for address and tag bits. A read operation is similar to a write operation but employs logic 54 and shift register 58, the BCW displacement indicating the address into which a read data byte on bus 38 is to be written. Data bytes are accompanied by a read strobe pulse on line 36, and status bytes by a read sense pulse on line 42. Status is returned to the processor at the completion of a command or write transmission, a read frame request being forced by the relevant IA pulsing the alert line 40 to effectively reset all its requests in the corresponding queue 50 except for one request which becomes a read request.
Patent GB-1131688-A (GB)
Title: Electro-optical elements and optical display devices
Inventor: WILLIAMS RICHARD
IPC: G02F1/1333
Filed: 1966-10-19
Abstract: 1,131,688. Light modulators. RADIO CORPORATION OF AMERICA. 19 Oct., 1966, No. 46846/66. Heading H4F. Apparatus for scattering a collimated light beam comprises a liquid crystal layer of an organic nematic thermotropic compound (i.e. an organic compound at a temperature within the temperature range in which the nematic mesomorphic state or mesophase is exhibited) in the space between two substrates having adjacent parallel surfaces less than ¢ millimetre apart (preferably about 5 to 300 microns apart), an electric field being applied through the compound by means of conductive strips applied to the adjacent surfaces. In a first embodiment, Fig. 1b, a transparent substrate 11 having a transparent conductive strip 15 is positioned 10 microns from a substrate 12, having a reflecting coating (not shown) and a conductive strip 16 which need not be transparent, and the space between the parallel and opposite surfaces 14 and 13 is filled with an organic nematic thermotropic compound 9, conductive strips 16 and 15 being perpendicular to each other, Fig. 1a not shown. With no field 19 applied between the conductive strips a light beam incident at less than 45 degrees (preferably less than 22 degrees) is normally reflected and thus very little light is reflected to the eye of the observer whose line of sight is normal to the transparent plate 11. If the strength of the field is slowly increased there is no visible change in the light intensity observed until a certain threshold value is reached (about 1000 volts /cm.) when the optical properties of layer 9 suddenly change and some of the incident light is scattered through transparent electrode 15 in a direction normal to plate 11. The area which thus becomes bright is that area of the nematic layer 9 which is directly between the intersection of strips 15 and 16. In a second embodiment, Fig. 2, not shown, both substrates and both conductive strips are transparent. A collimated light beam passes through the device in a direction normal to the substrates, the observer viewing the device from the other side also in a direction normal to the substrates. With no field applied the observer sees the region of the device which contains the organic nematic thermotropic compound layer as uniformly bright, but when the field reaches the threshold value the transmitted light is scattered in all directions and to the observer the area of the nematic layer directly between the intersection of the strips becomes dark. Each substrate may have an array of conductive strips, the array on one substrate being perpendicular to the other, Fig. 3, not shown, or one array comprising a series of concentric circular sections and the other comprising a series of straight lines diverging from a common central point, Fig. 4, not shown. Examples of organic nematic thermotropic compounds are given in the Specification.
Patent GB-1482105-A (GB)
Title: Blow-moulding
IPC: B29C49/72
Filed: 1974-10-30
Abstract: 1482105 Blow moulding; flash removal G MEHNERT 30 Oct 1974 [3 Nov 1973  30 March 1974] 46940/74 Heading B5A In a blow-moulding process, the article neck is formed by the gauging section of a blow mandrel which simultaneously forms and shears scrap from the end face of the neck and, after blow-moulding but before mould opening, the gauging section of the mandrel is withdrawn to separate the scrap from the article, the scrap being held on the mandrel, the mould is opened to deliver the article and the mandrel further withdrawn to strip off the scrap. As shown in Fig. 1, tube 3 is extruded from head 2 and enclosed by a mould 7 which then moves along trajectory III to blowing section II. Mandrel 6 is lowered, section 9 thereof simultaneously forming the neck portion of the article and scrap 10, which may be severed therefrom by enlarged diameter section of mandrel 6. After blowing, mandrel 6 is partially withdrawn, separating and retaining scrap 10 and the mould is then opened to deliver article (11, Fig. 2, not shown) on to surface (12). The mandrel 6 may have a reduced diameter guiding tip section for this purpose. The mould returns to extrusion station I and the mandrel is further withdrawn until scrap 10 is close below plate (13, Fig. 3, not shown) on frame 4. After article (II) has moved away, mandrel 6 is raised again to strip scrap 10 therefrom against plate (15, Fig. 4, not shown) and a further cycle begins. In the embodiment of Figs. 9-12 (not shown), extra flash (40) is formed around the neck by pinching between the mould halves when they close, this flash (40) being attached to the scrap 10 formed by the mandrel, the moulds being opened slightly to release this flash (40) for movement with scrap 10 on mandrel 6.
Patent GB-985292-A (GB)
Title: A method of manufacturing synthetic resin band
Inventor: INDO TOSHIYASU
IPC: B29C48/07
Filed: 1962-12-14
Abstract: A method of manufacturing synthetic resin band or tape containing a metal-coated synthetic resin ribbon, comprises extruding a thermoplastic transparent synthetic resin material in a molten state at a determined rate, and feeding the metal-coated ribbon as an insert into the resin material, as it is extruded, at a rate which is controlled relatively to the determined rate, so that the metal-coated ribbon is fed into the molten thermoplastic transparent synthetic resin material in corrugated or wave form. The metal-coated ribbon may be aluminium-coated polyester sheet.
Patent GB-1531715-A (GB)
Title: Fibrillated polymer film fabric
IPC: D04H13/00
Filed: 1975-10-27
Abstract: 1531715 Adhesive tapes SMITH & NEPHEW RESEARCH Ltd 27 Oct 1975 [1 Nov 1974 (2)] 47403/74 and 47416/74 Heading B2E [Also in Divisions D1 and D2] A thermoplastic polymer film having a regular pattern of raised areas 4 on one side and parallel grooves on the other side is stretched exclusively or predominantly in the direction of the grooves, the stretching if any normal to the grooves not exceeding 50% of the unstretched length. The fabric of Fig. 3 is obtained by stretching a melt embossed film composed of two incompatible polymers by 50 to 250% in the groove direction. If a monopolymer film is used thick strands (16, Fig. 4) are produced. Stretching in both directions or brushing fibrillates membranes 8 to leave hexagonal non fibrous areas 4. The polymer(s) may be high density polyethylene, polypropylene ethylene-polypropylene copolymer, polyamide or polystyrene. Preferably there are 50 to 500 grooves and 10 to 100 bosses per inch. A sheet or tape of the fabric may be given a continuous or discontinuous coating of polyacrylate, acrylic/rubber or polyvinyl ethyl ether adhesive on one side, e.g. with a roller or by protecting one side with a removable liner and immersing it in a solution or emulsion of the adhesive to produce an adhesive surgical tape or wound dressing. Alternatively both sides may be coated and the product used to laminate two porous sheets.
Patent GB-1174968-A (GB)
Title: Process for the Disproportionation of Olefins
Inventor: ALKEMA HENK JOHAN
IPC: B01J31/00
Filed: 1967-10-19
Abstract: 1,174,968. Disproportionation. SHELL INTERNATIONALE RESEARCH MAATSCHAPPIJ N.V. 17 Oct., 1968 [19 Oct., 1967], No. 47586/67. Heading C5E. Olefinic or cycloolefinic hydrocarbons are disproportionated by contact with a solid catalyst containing at least one compound of Mo, W, Re, V, Nb or Ta, in the presence of a hydride and/or organometallic compound of a Group I, II or III metal. The catalyst may be supported, e.g. on pumice, diatomaceous earths, ceramics, silica gel, alumina or a mixture of alumina with up to 50 wt. per cent of silica, magnesia or thoria. The main catalyst component is preferably an oxide, particularly MoO 3 , but may also be a chloride, sulphide, #-alkenyl or carbonyl compound. The catalysts may be promoted by oxides of the fourth period of the Periodic Table, e.g. of Co, Ni, Fe or Cr, and may also include an alkali metal oxide to enhance selectivity. Hydrogen may be present during the reaction. Included in the list of starting materials are propylene, 3 - methyl - hexene - 1, dodecene-1, styrene, octene-2, cyclobutene, cyclododecene and 2,2,1-tricycloheptene-2. In examples, butene-1 is converted to ethylene and hexenes.
Patent GB-1394162-A (GB)
Title: Book binding
IPC: B42B4/00
Filed: 1971-10-13
Abstract: 1394162 Bookbinding RESEARCH ASSOCIATION FOR THE PAPER & BOARD PRINTING & PACKAGING INDUSTRIES 25 Sept 1972 [13 Oct 1971] 47653/71 Heading B6A Open loops 8 of metal wire, e.g. aluminium, brass or mild steel, and at least partially coated with a hot-melt adhesive, are inserted along the last fold lines of a plurality of a signatures 1, the free ends 10 of the loops projecting from the outer edges of the fold lines and being bent against the outer edges before the signatures are bound between covers, by the application of further hot-melt adhesive, to form a book. The loops may have a coloured coating to match the pages of the signature and may be inserted by a wire stitching machine before the last folds are made.
Patent GB-1327640-A (GB)
Title: Basically substituted
IPC: C07D239/95
Filed: 1971-10-14
Abstract: 1327640 Basically substituted (1H,3H-quinazoline - 2 - thien - 4 - one) derivatives CASSELLA FARBWERKE MAINKUR AG 14 Oct 1971 [15 Oct 1970] 47862/71 Addition to 1311543 Heading C2C Novel compound of Formula I and pharmaceutically acceptable salts thereof, wherein R<SP>1</SP> means the radical of a secondary aliphatic, cycloaliphatic or araliphatic amine having 2-10 carbon atoms or of a 5-, 6- or 7- membered heterocyclic nitrogen base which contains in the nucleus besides the nitrogen atom a corresponding number of methylene groups, as well as optionally a further nitrogen atom optionally substituted, an O or an S atom, said radical being bound via a nitrogen atom; R 1  stands for lower alkoxy groups having 1-4 carbon atoms which are preferably in the 6,7 or 6,7,8-position; R 2  represents alkoxy groups having 1-4 carbon atoms; m stands for the integers 1, 2 or 3; and n means the integers 2 or 3 are prepared by acylating a compound of Formula II with a compound of formula Intermediates of Formula II above are prepared by reacting o-alkoxycarbonyl-phenylisocyanates with 3-y-amino-#-hydroxypropylamines.  Pharmaceutical compositions in conventional forms for oral or parenteral administration and having coronary dilating activity comprise an above novel compound and a carrier or diluent.
Patent GB-1309485-A (GB)
Title: 6-substituted-indolo 1,2-c-quinazolines
IPC: C07D487/04
Filed: 1970-10-08
Abstract: 1309485 Indolo[1,2-c]quinazolines A H ROBINS CO Inc 8 Oct 1970 [22 Oct 1969] 47910/70 Heading C2C Novel indolo(1,2-c]quinazolines of the general formula wherein R is a pyrrolidino, morpholino, 4- methylpiperazino, 4 - phenylpiperazino, 1- acetyl - piperid - 4 - yl, piperidino, 4 - phenylpiperidino or 3 - pyrrolino group, the term "phenyl" meaning a phenyl group optionally monosubstituted by a C 1-8  alkyl, C 1-8  alkoxy or trifluoromethyl group or a fluorine, chlorine or bromine atom, R<SP>1</SP> is a hydrogen, fluorine, chlorine or bromine atom or a C 1-8  alkyl, C 1-8  alkoxy or trifluoromethyl group and n is 0 or 1, and acid addition salts thereof are prepared (a) when n is 1, by reaction of a 6-halomethyl-indolo[1,2-c]quinazoline of the general formula wherein X is a halogen atom, with an amine of the general formula RH and (b) when n is 0, by reaction of a 2-(2-aminophenyl)indole of the general formula with an acid halide of the general formula RCOX, followed optionally by salification of the product. 6 - Halomethyl - indolo[1,2c-]quinazolines of the second general formula above are prepared by reaction of a 2-(2-aminophenyl)indole of the fourth general formula above with a haloacetyl halide. 2-(2-Aminophenyl)indoles of the fourth general formula above are prepared by treatment of a 2-amino-5-R<SP>1</SP>-acetophenone phenylhydrazone with polyphosphoric acid. Pharmaceutical compositions having sedative activity comprise, as active ingredient, an indolo[l,2-c]quinazoline of the first general formula above or a non-toxic acid addition salt thereof, together with an excipient, and may be administered orally or parenterally.
Patent GB-1533879-A (GB)
Title: Inflation device for life-saving equipment
IPC: F17C13/06
Filed: 1976-10-25
Abstract: 1533879 Gas discharge devices WALTER KIDDE CO Ltd 25 Oct 1976 [21 Nov 1975] 48077/75 Heading F4P A device for releasing gas from a container comprises a spring-loaded spindle 20 having a cutter 21 and held in an inoperative position by balls 29 held against an abutment 31 by a tapered pin 32, the spindle being released by a spring 35 which retracts pin 32 when water acts on element 36, an arming device comprising a ball 46 held against abutment 48 on a disc 33 by a removable member 49, preventing premature release of the spindle 20. The device may be actuated manually by removal of a cam plate 42 which then allows a disc 39 to move under the action of spring 35 thus retracting pin 32.
Patent GB-992144-A (GB)
Title: Axial piston pump or motor with hydrostatic thrust bearing
IPC: F01B3/00
Filed: 1962-12-20
Abstract: 992,144. Reciprocating pumps and motors. J. U. THOMA. Dec. 20, 1962, No. 48112/62. Heading F1A. In an axial piston pump or motor comprising a relatively rotatable cylinder block 1 and valve plate 4, a thrust bearing formed between the block and valve plate is lubricated by oil supplied intermittently from valve ports 5 via flow-restricting grooves 8, passages 9 and grooves 10. In the embodiment shown, recesses 12 in the block face act to intermittently connect grooves 8 and passages 9 during rotation. Alternatively, grooves 8 and passages 9 may be disposed in the block face and recesses 12 in the valve plate. In another embodiment, grooves 8 are located in the valve plate and passages 9 in the block such that the passages communicate intermittently with the grooves during rotation, recesses 12 then being omitted. An annular grooove 7 in the valve plate collects leakage liquid. Grooves 8 are located between the valve ports and the block axis so that centrifugal action tends to keep the grooves free from solid impurities. The valve plate may be selfaligning relative to the cylinder block and may be urged against the block by pistons under hydraulic pressure. Grooves 10 may be formed either in the valve plate or in the block.