baber/WOPTO huggingface dataset:
Patent GB-1487090-A (GB)
Title: Method of and device for compensating for optical distortion in the simultaneous screening of half-tone negatives
IPC: G03B27/32
Filed: 1974-12-17
Abstract: 1487090 Photographic process G FOXELL 17 Dec 1974 [18 Dec 1973] 54463/74 Headings G2M and G2X A method of compensating for different optical distortion of individual images in the simultaneous screening of geometrically identical colourseparated half-tone negatives or positives in preparing printing plates, e.g. for enlarging, said distortion resulting from imperfections in a projection lens, comprises adjusting the spacing between a rigid base-plate 7 and a superposed, relatively thin resiliently deformable support plate 6 on to which a photographic film is urged by suction applied to holes in the plate 6, the spacing being adjustable at a plurality of locations. Plate 6 has spaced pairs of further holes 9, 10, hole 9 being threaded and receiving a setscrew 8 that can extend below the bottom of plate 6, and hole 10 being smooth and having an enlarged upper portion and receiving a clamping screw 11 that engages a threaded hole in plate 7. The half-tone negatives are projected on to the film through a contact screen comprising a plurality of juxtaposed elementary screens with different screening angles, Figs. 7, 8, (not shown).
Patent GB-1255935-A (GB)
Title: Heat curable polyimide prepolymers
IPC: C08G73/12
Filed: 1968-11-18
Abstract: 1,255,935. Polyimides. TRW Inc. 18 Nov., 1968 [27 Dec., 1967], No. 54697/68. Heading C2C. [Also in Division C3] A heat-curable polyimide prepolymer comprises the condensation product of a polyamine with a dianhydride, end-capped by means of maleic anhydride. The polyamine may be phenylene diamine and the dianhydride may be pyromellitic dianhydride. The prepolymers may be made by condensing together a polyamine, a dianhydride and maleic anhydride, the amines and dianhydrides used in the examples being 4,4<SP>1</SP>-methylenedianiline and 4,4<SP>1</SP>-oxydianiline, and 3,3<SP>1</SP>,4,4<SP>1</SP>- benzophenone tetracarboxylic acid dianhydride and 1,4,5,8 - naphthalenetetracarboxylic dianhydride respectively.
Patent GB-1106250-A (GB)
Title: Improvements in camshaft assemblies for internal-combustion engines
IPC: F01L1/053
Filed: 1965-12-31
Abstract: 1,106,250. I. C. engine valve gear. REGIE NATIONALE DES USINES RENAULT. Dec. 31, 1965 [Jan. 4, 1965], No.55491/65. Heading F1B. In a cam-shaft assembly including a coupling, the female part 2, Fig. 1, which is connected to the drive means, has diametrically opposed wall interruptions 10 a male part 1 having concentric arcuate ends 6 and side flats 9 whereby the male part can be entered laterally into the female part through the wall interruptions and angularly dis - placed relative to the female part into a centred relationship in which the coupling parts can be bolted together. The arrangement permits dismounting of the cam-shaft without affecting valve timing.
Patent GB-1416699-A (GB)
Title: Salts of substituted p-phenylene diamine developing agents and their use in colour photography
IPC: G03C7/413
Filed: 1972-12-04
Abstract: 1416699 Salts of substituted p-phenylene diamines EASTMAN KODAK CO 4 Dec 1972 [3 Dec 1971] 55891/72 Heading C2C [Also in Division G2] The invention comprises the p-toluene sulphonic acid salts of compounds of the formula wherein n is an integer from 1 to 4, R<SP>1</SP> is H, alkyl other than ethyl, alkoxyalkyl, hydroxyalkyl, carboxylic acylamido having up to 4 C atoms in the alkyl component or sulphonamido groups if either R<SP>4</SP> or R<SP>5</SP> are other than H, R<SP>1</SP> may be C 2 H 5 , R<SP>2</SP> is H or C 1 -C 4  alkyl or hydroxyalkyl, R<SP>3</SP> is H, alkyl, alkoxy, carboxylic acylamido or acylamidoalkyl, sulphonamido or sulphonamidoalkyl, R<SP>4</SP> and R<SP>5</SP> are the same as R<SP>3</SP>, or are the atoms necessary to form a 5- or 6- membered ring with R<SP>1</SP>.
Patent GB-1441095-A (GB)
Title: Refractory shapes
IPC: C04B35/01
Filed: 1972-12-08
Abstract: 1441095 Refractories STEETLEY (MFG) Ltd 10 Dec 1973 [8 Dec 1972] 56770/72 Heading C1J A refractory is obtained by mixing at 75- 150‹ C. a refractory grain, a cokeable carbonaceous substance, an epoxy resin and an aromatic amine hardener and shaping at 50-120‹ C. The grain can be MgO, CaO, dolomite (all dead burnt) or their mixtures, whilst ZrSiO 4  acid ZrO 2  can also be included. Tar and pitch are the carbonaceous material into which carbon can be incorporated. The amine hardener may be diamino diphenyl methane or m-phenylenediamine.
Patent GB-1339435-A (GB)
Title: Pretreatment of metal sheets which are coated after forming  operation
IPC: C23F15/00
Filed: 1970-12-02
Abstract: 1339435 Enamelling metals BAYER AG 2 Dec 1970 [4 Dec 1969 7 March 1970] 57189/70 Heading C1M [Also in Division B2] Metallic substrates are surface-treated (as defined), coupled with a first layer comprising a water-soluble, film-forming, organic polymer, shaped, and then provided with a firmly adherent protective layer e.g. of B-Ti white enamel. The surface treatment is one or more of the following: rough alkaline degreasing, fine electrolytic degreasing, rinsing, electrolytic pickling and electrolytic nickel coating. The first layer may be partially or completely removed before application of the protective layer. It may comprise in addition to the filmforming water-soluble, film-forming organic polymers at least one water-soluble polymer with a molecular weight of up to 2000. Suitable water-soluble film-forming polymers are polyethyleneoxide, polyvinyl alcohol or partially saponified polyvinyl acetates, polyvinyl pyrrolidone, polyacrylamides and copolymers which contain acrylamide e.g. copolymers with acrylic acid esters or acrylic acids, optionally as their salts, polyacrylic acid or polymethacrylic acid and their copolymers, optionally in the form of their salts, water-soluble cellulose derivatives such as methyl cellulose, carboxymethyl cellulose, hydroxyethyl cellulose, hydroxypropyl cellulose, alginates and pectins, water-soluble copolymers formed by reacting copolymers of maleic anhydride e.g. with styrene, isobutylene or ethylene with decomposition of the anhydride group, the compounds being salts, amides or amide ammonium salts which contain carboxyl groups. The method may be used for application to steel sheets which may then be drawn or pressed. The first coating may be applied by brushing or spraying. The enamel preferably consists of in percentage by weight SiO 2  38; Al 2 O 3  0À5; B 2 O 3  21; alkali metal oxide 15; fluorine 2; TiO 2  19; Mg 0À5 and P 2 O 5  3.
Patent GB-1334889-A (GB)
Title: Cleaning device for a chemical or electr-chemical surface treatment plant
IPC: C23G3/00
Filed: 1971-12-10
Abstract: 1334889 Cleaning apparatus for plating baths NORDNEROAB 10 Dec 1971 [10 Dec 1970] 57562/71 Headings C7B and C7E A cleaning device for surface treatment plants, e.g. electro-plating plants, comprises a spray booth 5 supported on a runway 4 over a treatment bath 1. The material undergoing treatment is carried on a rack 7 which can be raised and lowered by pulley 6. A cleaning tank 2 supplies water via tube 11 to a pump 10. In operation, the rack 7 is raised from the tank 1, into the region of the nozzles 9 in the booth 5, the pump supplies water to the nozzles and the articles are cleaned, spent water falling into the tank 1 or returning to tank 2 by way of tube 16. The nozzles 9 can also be connected to a clean water supply 13. The booth then moves to the next treatment tank, having an associated cleaning tank, and the process is repeated. If desired, the articles can be carried in barrels. In an example the device is used in a plant for successively electro-plating with Zn, Cu, Ni and Cr.
Patent GB-1385805-A (GB)
Title: Material handling apparatus
IPC: B65G67/60
Filed: 1972-12-13
Abstract: 1385805 Unloading ship holds; endless conveyers BORG-WARNER (CANADA) Ltd 13 Dec 1972 [12 Jan 1972] 57577/72 Headings B8A and B8E Bucket elevators 22 to discharge a ship's hold 22 are mounted on a trolley frame 28 movable longitudinally of the hold and are pivotable between horizontal and vertical positions. A shaft 24 driven by a prime mover 29 has a number of endless belts or chains 48 having buckets 50 keyed thereto and supported by frameworks 47 pivotable about the shaft by a chain and pulley system 66 driven by a hoist 64. The buckets discharge on to a cross conveyer belt 52 which in turn discharges through a shoot 62 on to a conveyer belt 60 supported longitudinally of the ship on a portion 36 to convey the material to the dischargepoint. The trolley frame 28 has wheels 30, 32 the latter supported by a track 34 and may be moved by a winch and motor arrangement 40 or by other motor means.
Patent GB-1282576-A (GB)
Title: Isolating ring for lamp assembly
IPC: H01B7/36
Filed: 1969-11-25
Abstract: 1282576 Mounting vehicle lamps DOMINION AUTO ACCESSORIES Ltd 25 Nov 1969 [26 Nov 1968] 57649/76 Heading F4R A sealed-beam lamp 14 is mounted in a housing 10 by means of a resilient ring 25 having an internal annular channel to receive the rim 12 of the housing, a lip 42 to engage the rim 45 of the lamp, and at least three inwardly-protruding lugs 40 adapted to abut against the reflecitve portion 46 of the lamp and hold it in spaced relation with the housing. Preferably there are four lugs spaced 90 degrees apart, and each extends from the bottom of the channel through a corresponding recess in the rim of the housing and is provided with two ribs (54) between which a locating projection 60 on the lamp may be engaged. The housing is secured to a vehicle by means of a mounting hemisphere 62 and a threaded shaft 63.
Patent GB-1285904-A (GB)
Title: Catalytic process for the production of polyesters
IPC: C08G63/00
Filed: 1969-11-25
Abstract: 1285904 Polycondensation catalyst for the production of polyesters KANEGAFUCHI BOSEKI KK and SNIA VISCOSA SOC NAZIONALE INDUSTRIA APPLICAZIONI VISCOSA SpA 25 Nov 1969 [25 Nov 1968] 57658/69 Heading C3R Polyesters are produced using as a polycondensation catalyst a mixture of metallic antimony and metallic titanium. Zinc acetate and triethyl phosphate or triphenyl phosphite may be used as catalysts in an esterification step to produce the esters for the polycondensation reaction. In the examples polyesters were made be polycondensing ethylene glycol and dimethyl terephthalate or mixtures thereof with dimethyl isophthalate or by polycondensing methyl p-(#- hydroxyethoxy) benzoate.
Patent GB-1362668-A (GB)
Title: Polycondensation in the liquid phase
IPC: C08G63/80
Filed: 1971-12-20
Abstract: 1362668 Polyesters CIBA-GEIGY AG 20 Dec 1971 [18 Dec 1970] 59021/71 Heading C3R A saturated thermoplastic polyester is produced by heating under the atmosphere of a hot inert gas, a precondensate consisting essentially of a dicarboxylic acid and a diol esterification or transesterification product to a temperature of 200-350 C., detaching by mechanical action liquid droplets from the resulting bulk liquid until a melt viscosity of 500 poises is reached, the droplets being allowed to return into the bulk liquid under the action of gravity, the melt viscosity being that of the bulk liquid measured in a rotary viscometer at 270 C., polycondensation being continued in the bulk liquid or in the solid phase until the desired degree of polymerization is obtained. The process may be operated at a weight ratio of droplet phase to bulk liquid phase not greater than 1 : 1. Droplet formation may be effected by circulating the bulk liquid phase by means of a mechanical stirrer in a vessel fitted with baffles, e.g. in the form of bars, rods or blades, mounted so that only their lower portions are immersed in the upper layer of the liquid material, the process preferably being such that the liquid collides with the baffle faces at a speed of 110-1500 m. min<SP>-1</SP>. The heated inert gas atmosphere may be maintained at a pressure of 760-0À05 Torr. In Example 1 dimethyl terephthalate and ethylene glycol are transesterified in the presence of finely pulverized 3 : 7 lead-antimony alloy and metallic calcium to produce bis-(hydroxyethyl) terephthalate which is then passed for polycondensation to an autoclave fitted with a spiral stirrer and baffles suspended from the cover which dip into the liquid.
Patent GB-1416990-A (GB)
Title: Transfer sheet material
IPC: B41M5/136
Filed: 1971-12-21
Abstract: 1416990 Transfer sheet WIGGINS TEAPE LTD 20 Feb 1973 [21 Dec 1971] 59214/71 Heading D2B A transfer sheet material comprises a base sheet having on one surface a coating containing one or more colour formers each having the formula  where A and B are optionally substituted 1, 4-arylene residues, X 1  is hydroxy, alkoxy or optionally substituted amino radical, and X 2  is hydrogen, hydroxy or optionally substituted amino radical. A and B are preferably 1, 4- phenylene residues, and the substituents in A, B may be alkyl, amino, dialkylamino, hydroxy, alkoxy, carboxy and sulpho. The substituents in A, B may also bridge A and B to produce a compound of formula: where Z represents a direct link, oxygen, sulphur or -NR-, where R is hydrogen or an optionally substituted alkyl, aryl or aralkyl radical e.g. 2-methyl benzyl, benzyl or methyl. X 1  and X 2  may have the formula -NR 1 R 2  where R 1  and R 2  are hydrogen or an optionally substituted alkyl, aralkyl oraryl radical. Examples of R 1  and R 2  are methyl, ethyl, propyl, butyl, #-hydroxyethyl, #-chloroethyl, 4-methoxy-benzyl, 2 methylbenzyl, benzyl, 2-methylphenyl, 4 - methylphenyl, 3 - chlorophenyl, naphth-2-yl, and phenyl. The colour former may be in the form of a salt with HCI, HBr, HNO 3  or H 2 SO 4  or with a Group IA metal, a Group IIA metal, optionally substituted ammonium, optionally substituted hydrazine, optionally substituted hydroxylamine, optionally substituted cyanidine, or a heterocyclic base. The colour formers are leuco compounds of dyes of the indamine, azine, oxazine, thiazine and carbazole series and may be prepared by reduction of such dyes. Example 1 describes the preparation of leuco gallocyanine from gallocyanine and Table 1 lists other dyes which may be reduced to produce a colour former for use in the present invention. Tables 2 and 3 list examples of colour formers for use in spirit duplicating and pressure sensitive copying systems respectively. The base sheet may be of paper, polypropylene or polyethylene terephthalate. The colour former may be evenly distributed throughout the coating, or may be present in solution in microcapsules in the coating. The colour former may be used with an acid clay developer. In a pressure sensitive copying system, the coated surface of the transfer sheet is placed in contact with a surface of a copy sheet carrying the developer. If a plurality of copies are required intermediate copy sheets are interposed between the two sheets, each intermediate copy sheet having on on side a colour former as above, and on the other the developer. In a hectographic copying system, the colour former may be mixed with castor oil, 10 ethyl cellulose and toluene to form the coating material, and the developer may be attapulgite or montmorillonite clay.
Patent GB-1387401-A (GB)
Title: Insert installation tool
IPC: B23P19/02
Filed: 1970-12-14
Abstract: 1387401 Assembling force fits ADBAR (PATENT CO) Ltd 2 March 1972 [14 Dec 1970] 59361/70 Heading B3U An insert installation tool 40 for axially moving a sleeve 2 relative to a tapered body 1 to lock the latter in a hole 3 comprises a pin 44 having a reduced end 47 and a tubular nose piece 43 thereabout carried for axial movement relative to one another by a holder 41. In operation the tool is moved axially to engage the pin end 47 within a bore of the body 1 and abut the pin shoulder 48 against the smaller end of the body 1. This movement pushes the body through the sleeve 2 into the hole 3 so that the sleeve remains outside the hole and about the leading part of the pin 44. On continued-axial movement of the tool, relative axial movement between the pin and nose piece take place so that the nose piece abuts the end of the sleeve 2 and drives it into the hole to lock the body within the hole. The end 47 of the pin may be split (Fig. 7, not shown) to frictionally engage the body. The nose piece may be held in place by a ring nut screwed about an externally threaded part of the holder, (Fig. 7) or may be held by a grub screw (Fig. 8, not shown). The tool may be used in a drill chuck, press, pneumatic head, hydraulic head or an electrically vibrating head.
Patent GB-1298357-A (GB)
Title: Fluidic transducers
IPC: F15C1/04
Filed: 1969-12-04
Abstract: 1298357 Fluid regulation GARRETT CORP 4 Dec 1969 [5 Dec 1968] 59385/69 Heading G3H In a fluidic transducer, signals applied to an electromagnet 11 result in a corresponding deflection of an armature 39 carrying a cylindrical pin 41, and hence also in a corresponding apportionment between two outlets 16 and 17 of a fluid stream issuing from an inlet nozzle 15, the outlets being separated by a splitter element 20. The pin may have a diameter substantially equal to that of the inlet nozzle 15 and, with the outlets 16, 17 laterally displaced from the axis of nozzle 15, may be arranged to lie oppositely to one of the outlets 16 or 17 when in its de-energized state so that fluid is deflected to the other of the two outlets, Fig. 2 (not shown). Alternatively, the outlets may be disposed symmetrically with respect to the inlet nozzle axis so that when in its neutral position, the pin causes an equal distribution of fluid between the two outlets, Fig. 3 (not shown). Adherance of the fluid beam to the pin contour can be achieved by rendering the pin diameter substantially greater than the diameter of nozzle 15, Fig. 4 (not shown).
Patent GB-1454080-A (GB)
Title: Dobbies
IPC: D03C1/14
Filed: 1973-12-21
Abstract: 1454080 Dobbies YAMADA DOBBY CO Ltd 21 Dec 1973 [29 Dec 1972] 59407/73 Heading D1E A dobby with a continuously moving pattern drum 5 has a reading device comprising a star wheel 1, on a spring loaded lever 2, pressed against the drum 5 so that movement of the wheel 1 into and out of the pattern perforations electrically or mechanically controls the dobby.
Patent GB-1277609-A (GB)
Title: Microwave vibrating resonating cavity and drying process
Inventor: FORSTER ERIC OTTO
IPC: F26B3/347
Filed: 1969-12-05
Abstract: 1277609 Drying polymers with microwaves ESSO RESEARCH & ENG CO 5 Dec 1969 [23 Dec 1968] 59422/69 Addition to 1226988 Heading F4G [Also in Division H5] The method of drying non-polour polymers, as described in the parent Specification is modified by replacing the belt conveyor by one or more vibrating acrobating microwave resonating cavities, which convey the polymer through the cavity when inclined to the horizontal. The microwave frequency falls within the range 600 Fo 40,000 MHz.
Patent GB-1331699-A (GB)
Title: Photo-flash apparatus
IPC: G03B7/083
Filed: 1971-12-22
Abstract: 1331699 Flash apparatus POLAROID CORP 22 Dec 1971 [24 Dec 1970] 59701/71 Heading G2A A photo-flash apparatus, which in use may be attached to a camera 2, comprises a flash source 10, which may be a flash-cube, and a variable diaphragm which is made up of a plurality of relatively slidable apertured members 34, 36, 38, 40 and is located in front of the flash source. Preferably the apertured members define two openings, the sizes of which are changed by relative movement of the members 34, 36, 38, 40 and are moved in response to focusing of the camera 2. When not in use, the photo-flash apparatus may be folded to lie at the side of the camera. A trimming means may be provided for varying the size of the apertures independently of the camera focus.
Patent GB-1349159-A (GB)
Title: Process and catalyst for the polymerization of alpha-olefins
IPC: C08F10/00
Filed: 1971-12-29
Abstract: 1349159 Catalyst for polymerizing olefins TOHO TITANIUM CO Ltd 29 Dec 1971 [28 Dec 1970] 60434/71 Heading C3P A catalyst component for polymerizing olefins is prepared by milling, preferably at -50‹ to +50‹ C., a halogen compound of titanium in lower than its maximum valence state with 0À1 to 5% by weight based on the titanium compound of an ester of an α,#-unsaturated carboxylic acid (e.g. acrylic esters) and exposing the titanium compound before during or after the milling to 0À1 to 5 mole per cent based on the titanium compound of oxygen and may be mixed with an organoaluminium compound of formula AlR n X 3-n  where R is alkyl or aryl, X is halogen, alkoxy or trialkylsiloxy and n is 1 to 3. In the examples TiCl 4  was reduced with Al to give Ti 3 AlCl 12  which was milled with methyl methacrylate in an atmosphere of an inert gas containing oxygen and was used with diethyl aluminium monochloride to polymerize propylene to produce a product of high isotacticity. Methanol and propanol were added at the termination of polymerization.
Patent GB-1271310-A (GB)
Title: Improvements in or relating to telecommunications system subscriber station circuit arrangements
IPC: H04M1/58
Filed: 1969-12-16
Abstract: 1,271,310. Substation circuits. SIEMENS A.G. 16 Dec., 1969 [15 April, 1969], No. 61160/69. Headings H4K and H4R. In a circuit for a centrally supplied subscriber station, the input (base and collector electrodes) of a receiving amplifier Tr1 for a receiver T is connected to opposite corners of an anti-sidetone bridge circuit and one or more voltage dependent impedance elements D1 are also connected between these opposite corners for equalizing the attenuation produced when connected to lines of different lengths. A transmitter M is connected to the other diagonal of the bridge circuit. The bridge circuit comprises the resistance of the connected subscriber line, a balance resistor N and two bridge resistors R1 and R2. To accurately match a subscriber line the balancing arm consists of the resistor N and a capacitor in parallel. The transistor operates as a common-emitter amplifier. Resistors Re and Rk connect the emitter and collector electrodes to negative and positive lines respectively. A base resistor Rb is connected to the negative line via a diode D2 which holds the emitter-base voltage substantially constant. A feedback resistor R3 is provided. The receiver T is of capacitor type, equalization being effected by arranging that the effective internal resistance of the amplifier is itself dependent upon the impedance of element D1.
Patent GB-1254800-A (GB)
Title: Improvements in or relating to binary to decimal conversion
IPC: H03M7/12
Filed: 1969-12-19
Abstract: 1,254,800. Binary coded decimal conversion. TELEFONAKTIEBOLAGET L. M. ERICSSON. 19 Dec., 1969 [20 Dec., 1968], No. 62101/69. Heading G4A.  The invention relates to a binary to binary coded decimal conversion.  Binary data is converted to b.c.d. by effectively dividing by 10 or by multiplying by 1/10 which is recurring number in binary notation. To produce an approximation to 1/10 a number is multiplied by 3 then 17, 257, 65,537 i.e. successively by 3 and then (2<SP>2n-1</SP> + 1) with n#3. Data in a register RA is passed to an adderregister A1 where 1 is added. The data is passed to an adder register and is shifted one place and added to itself to produce multiplication by 3. It is passed to A3 to produce multiplication by 17, to A4 producing multiplication by 257 and to A5 producing multiplication by 65,537. Each adder-register An is effectively 2<SP>n-1</SP> stages longer than the preceding adder-register, the extra stages of A5 not being shown since they are not required.  If a p-bit number is being converted (16 bit as shown) the p-3 most significant bits in A5 are examined by comparator circuit J. If they are not zero they are returned to register RA to be remultiplied. The remaining 4 bits are passed to register-adder A6 where they are multiplied by 5 and the four most significant bits of A6 are passed to a register RB1-RB5. This number represents the remainder of the number in RA when divided by 10 and hence represents the least significant decimal digit of the number in RA. The remainders are successively entered in the registers RB1-RB5 until the p-3 most significant bits of A5 are zero indicating that the process is complete. The addition of 1 in A1 and the multiplication of 5 in A6 are found to be necessary to correct errors in the approximation.