baber/WOPTO huggingface dataset:
Patent GB-1389282-A (GB)
Title: Manufacture of metallic chlorides and or oxides and or the pure metals from alloys or scrap
IPC: C22B1/08
Filed: 1972-02-09
Abstract: 1389282 Metallic oxides, chlorides &c. LARCO SOC MINIERE ET METALLURGIQUE DE LARYMNA SA 9 Feb 1972 [11 Feb 1971] 6108/72 Heading C1A A method of production, in very pure form, of the oxides and/or chlorides of metals of the group comprising Al, Be, Bi, Co, Cu, Pb, Fe, Ni, Zn, or production of the metals themselves, from alloys or scrap metal containing at least two of the above mentioned metals, comprises the following steps in a closed cycle process: (i) a chlorination step to produce gaseous metal chlorides, by reaction with hydrogen chloride gas, (ii) a condensation step to separate out one or more of the volatilized chlorides followed by either (III) an oxidation step with water vapour to form the metallic oxide or (iv) a reduction step with hydrogen to form the pure metal, unconverted chlorides, metals or metal oxides not withdrawn from the system free HCl and unused water and/or hydrogen being recycled to the chlorination chamber. A temperature of about 850‹ C. is maintained in the chlorination chamber. The speed of chlorination may be increased or maintained at a set value by addition of granules of metals very reactive to chlorine such as Fe, Al. Alternatively, other elements such as C, S, As, Si and P may be introduced for this purpose. The apparatus used is the same as that of application 6109/72 with the difference that the reducing chambers and collecting hoppers are omitted, the gases leaving the oxidizing and reducing chambers being vented.
Patent GB-909912-A (GB)
Title: Improvements in or relating to foundry sand rammers
IPC: B22C15/20
Filed: 1958-02-25
Abstract: 909,912. Retractive switches. FOUNDRY EQUIPMENT Ltd., and BEECH, A. S. Feb. 25, 1959 [Feb. 25, 1958], No. 6125/58. Class 38 (5). [Also in Group XXII] The sand-slinging head of a foundry moulding machine is moved by hydraulic motors which are controlled by solenoid - actuated valves. The solenoid circuits are completed through switch contacts contained in handles on the head, so that the head is moved in the direction in which the handles are pushed by the operator. Each handle comprises a flexible casing 42 with an inner contact tube 56, and a central insulating tube 57 carrying two sets of contacts 58, 59, which are coupled through the tube 56 according to the direction the handle is pushed.
Patent GB-581491-A (GB)
Title: Improvements in or relating to loading devices
IPC: E21F13/06
Filed: 1944-04-03
Abstract: 581,491. Scraper apparatus for transporting loose material. McLOUGHLIN, A. April 3, 1944, No. 6186. [Class 78 (iv)] In a scraper for use in mine galleries of the kind which is reciprocated by head and tail ropes n<1>, n<2> and which consists of sides a, b connected by a vertical hinge c, the ropes n<1>, n<2> are attached to the cross-bar e which limits the opening of the mouth of the scraper. One end of the bar e is pivotally connected by a pin d to the side b, and the other end carries a pin f which engages in a slot f<1> in a flange a<1> on the side a. The opening of the mouth of the scraper may be further limited by the insertion of a stop in the slot f<1>. The curved end a<2> may be provided with an upwardly-sloped floor portion and the bottoms of the sides may be mounted on balls or rollers. A horizontally-hinged inwardly-yielding flap may be provided in the side b. In a modification (not shown) the bar a is made in two portions'which are pivoted together and pivoted to the sides.
Patent GB-1013539-A (GB)
Title: Pipe couplings
Inventor: FREEMAN FRANK GEORGE
IPC: F16L37/12
Filed: 1963-02-15
Abstract: 1,013,539. Pipe couplings. JOSEPH LUCAS (INDUSTRIES) Ltd. Jan. 6, 1964 [Feb. 15, 1963], No. 6186/63. Heading F2G. A coupling comprises a first part 10 having an external circumferential groove 19, a second part 13 to be inserted into the first part, at least one resilient sealing ring 17 located in a groove 16 in a periphery of one of the parts to bear on the other part, an external annular shoulder 26 on the second part with which can engage segmental catch-pieces 20 located in the groove 19, and a sleeve 21 on the first part which is urged by a spring 22 to a limit position where it holds the catch-pieces 20 in engagement with the shoulder 26, but when moved axially against the spring permits the catchpieces to disengage from the shoulder. Each of the parts 10 and 13 have external screwthreads 11 for attachment of a pipe. A splitring 23 of L-cross-section provides an abutment for the spring 22 and a dust cover 27 is provided. When the two parts are united the throughbore is of substantially constant cross-section.
Patent GB-788695-A (GB)
Title: Steroids
IPC: C07J75/00
Filed: 1956-02-28
Abstract: The invention comprises a compound having the formula: <FORM:0788695/IV (b)/1> where R is hydrogen or methyl and a process for the production of 11b -hydroxy-17a -methyltestosterone and 11b -hydroxy-17a -methyl-19-nortestosterone, and esters thereof, wherein the hydrolysable 3-keto protecting group of an 11b  - hydroxy - 17a - methyltestosterone or an 11b  - hydroxy - 17a  - methyl - 19 - nortestosterone which contains a hydrolysable 3-keto protecting-group is hydrolysed with an acidic, basic or neutral hydrolysing agent to regenerate the 3-keto group.  As starting material there may be used a 3-t-amino-17a -methyl-3,5 - androstadiene - 11b ,17b  - diol (or the corresponding 3-ketal) which is prepared by reaction of a 11-keto-17a -methyltestosterone with a sec. amine, e.g. pyrrolidine followed by the reduction of the thus-obtained 3-t-amino-17b  - hydroxy - 17a  - methyl - 3,5 - androstadiene-11-one with lithium aluminium hydride. Alternatively the 3-t-amino-17a -methyl-3,5-androstadiene 11b , 17b -diol is prepared by reaction of an 11b -hydroxy-4-androstene-3,17-dione with a sec.-amine followed by reaction of the thus obtained 3-t-amino-11b -hydroxy-3,5-androstadiene with methyl magnesium halide.  Both process are exemplified.  In addition, examples describe the preparation of 17 - acylates and 11,17 - diacylates of 11b -hydroxy - 17a  - methyltestosterone and 10-normethyl - 11b  - hydroxy - 17a  - methyltestosterone wherein the acylates are the acetate, propionate, trimethylacetate, furoate, a - or b -cyclohexylpropionate, benzoate, phenylacetate, a - or b -cyclopentylpropionate, a - or b -phenylpropionate, methylbenzoate, a - or b -furylacrylate, valerate and methacrylate.  Specifications 750,941 and 756,400 are referred to.
Patent GB-498566-A (GB)
Title: Improvements in electron multipliers
IPC: H01J25/76
Filed: 1938-02-28
Abstract: 498,566. Electron multipliers. FARNSWORTH TELEVISION, Inc. Feb. 28, 1938, No. 6210. Convention date, March 22, 1937. [Class 39 (i)] In an electron multiplier a cloud of electrons is oscillated apart from the body which forms the cloud to be multiplied, the first part maintaining oscillating condition of the second. A common cathode 2, coated on its interior with silver on which is caesium, encloses two anodes 5, 6, one 5 connected to a potential source 7 through resonant circuit 9, the other 5 being connected over a H.T. choke 10 and load 11. A window 4 is formed in the anode opposite the cathode 5. Light falling through the window 4 on the cathode generates electrons which are oscillated about the anode 5, the potential of which is maintained by the oscillating system 2, 6, 9, 7 acting through the variable condenser 12 ; secondary emission occurs with the separate cloud as well as with that to be amplified. A thermionic cathode may supply the original electrons in place of photo emission from the cathode 2. In a modification, the cathode is divided and the two anodes are formed in one.
Patent GB-110115-A (GB)
Title: Improvements relating to the Projection of Kinematograph and like Pictures.
Inventor: MCCORMICK LANGDON
IPC: A63J25/00
Filed: 1917-05-02
Abstract: 110,115. McCormick, L. May 2, 1917. Optical-projection apparatus.-In the projection of a number of kinematographor like pictures simultaneously upon a screen, the effect of overlapping edges is avoided by dividing the screen into sections B, C, D. E by pictorial devices such as trees H, H<1>, H<2>, the centre one having branches I. The devices may be painted on, secured to, or projected upon the screen, and other parts of the surface such as d may be similarly treated.
Patent GB-1414601-A (GB)
Title: Using the pull of a beam of light on a liquid surface to explain colour sight with the provision of a chromatic selection device
IPC: A01K11/00
Filed: 1974-02-12
Abstract: 1414601 Photo-electric detection of photon induced increases of liquid level A P PEDRICK 12 Feb 1974 06269/74 Heading G1A The Specification refers to the discovery that a laser or like strong light beam can cause localized raising of a liquid surface. The invention exploits this discovery, with reference by way of example to its application to discriminating between cats of different colours. Light from sources 11, 12 are reflected from the back of a cat 1 entering an access tunnel 2. The reflected light is effectively amplified by directing it on to a photo-cell 14 whose output controls the intensity of the beam from a source 15. The latter beam strikes a liquid surface 16, causing the liquid surface to rise to an extent dependent on the energy of the reflected light from the cat's back. Thus, e.g. in accordance with whether the cat is black or ginger, the deflection of a further light beam 6 reflected at the liquid surface, can be such as to energize one or the other of two  photo-cells PC1, PC2. These cells can be used to operate a cat flap 3. The Specification also contains a theoretical discussion of the phenomenon on which the invention is based.
Patent GB-1529627-A (GB)
Title: Hinge for a door
IPC: E05D3/06
Filed: 1976-02-18
Abstract: 1529627 Door hinges PAUMELLERIE ELECTRIQUE 18 Feb 1976 [4 March 1975] 06381/76 Heading E2F A door hinge (e.g. a rear vehicle door) comprises hinge parts 1, 7 for attachment to a support 6 and door 11 respectively provided with cylindrical knuckles 13, 14 which are linked via pivot pins 19, 21 to an intermediate member 18, and a locking member 23 in the form of a block slidable between the knuckles and having flat end faces 27, 28 which can engage flat surfaces 29, 31 milled onto the knuckles; the member 23 allowing pivotal movement about only one pin at a time-locking part 7 to member 18 while both rotate about pin 19 (Fig. 1) then allowing pivotal movement of part 7 about pin 21 while the member 18 is locked to part 1 (Fig. 6). Member 18 is formed from a base with upstanding side walls through which the pivot pins extend and between which the knuckles are located. The pins have retaining nuts on one end and bent over top portions of the side walls of member 18 retain the locking member 23 which may be solid (as shown) or of hollow section (Fig. 7, not shown).
Patent GB-286255-A (GB)
Title: Process for the purification, hydrogenation and desulphurisation of liquid or gaseous hydrocarbons as for example oils or other liquid or gaseous products of carbonisation and the like
IPC: C10G45/24
Filed: 1928-03-01
Abstract: 286,255. Rostin, H. March 1, 1927, [Convention date]. Mineral and tar oils, purifying &c.-Oils are hydrogenated and purified by passage with sulphuretted hydrogen over iron, preferably finely divided and freshly reduced. For example, cracked oils or crude benzole are vaporized, mixed with sulphuretted hydrogen, and passed up a vertical tube packed with granulated " Minette " or other iron oxide ore that has been reduced by hydrogen or water gas at 200- 300‹ C. When the iron is converted into sulphide the flow is stopped until the iron and sulphuretted hydrogen are reformed by passage downwards of hydrogen or gases containing it.
Patent GB-309685-A (GB)
Title: Improvements in power plants comprising internal combustion engines and rotary motors
IPC: F02B37/00
Filed: 1928-03-02
Abstract: 309,685. Hemmingsen, T. V. March 2, 1928. Movable - abutment type; back-pressure reducing.-A rotory motor of the toothed drum or " Roots'-blower " type is driven by the exhaust of an internal - combustion engine, and drives a blower to supply the air charge. The blower may be of the same design as the motor. As shown, two inter-meshing wheels 4, 5 are housed in a casing 1 formed with a curved inlet and outlet 10, 11. On the outlet side grooves 13, 14 of gradually increasing crosssection are formed, to reduce the noise due to emission of fluid to the exhaust pipe. Recesses 15, 16 are formed in the side walls of the casing; these recesses connect the spaces d formed in turn between one of the teeth on one wheel and the corresponding recess in the other to the main outlet and inlet chambers. The recess 15 prevents the return of a large amount of gas from the outlet side to the inlet side. The grooves 13, 14 may be made in the sides of the casing.
Patent GB-728961-A (GB)
Title: Extraction of steroidal sapogenins from plant material
Inventor: SPENSLEY PHILIP CALVERT
IPC: C07J71/00
Filed: 1952-03-13
Abstract: Sapogenin is obtained from plant material containing its glycosides or other derivatives, e.g. from sisal and other plants of the genus Agave, by separating the plant juice from the plant material, allowing the juice to ferment, and collecting the resultant sludge from which the sapogenin is recovered; subsequently, heating the sludge with a small proportion of mineral acid to agglomerate the finer solid particles therein, collecting the sludge solids, heating the sludge solids with mineral acid for a time and at a temperature sufficient to effect substantial hydrolysis thereof, removing the alcohol by steam distillation if alcoholic acid is employed for the hydrolysis, and collecting the nonaqueous phase from the resultant suspension, and extracting the collected material by means of an organic solvent to produce hecogenin.  The water-insoluble solids resulting from the acid hydrolysis may be treated with an adsorbent material, e.g. activated charcoal, prior to decantation, filtration &c.  As an alternative process the hecogenin can be obtained by direct extraction of the dried plant juice sludge with an organic fat solvent, e.g. isopropyl ether or carbon tetrachloride. Specifications 702,072 and 722,186 are referred to.
Patent GB-476655-A (GB)
Title: Copper alloys
IPC: B03D1/24
Filed: 1936-03-05
Abstract: Copper alloys for use as conductive parts of electrical equipment contain about 0,2 to 1 per cent of chromium and at least 0,35 but less than 1 per cent of aluminium, the remainder being chiefly copper.  The alloys may contain tin or zinc or both in amounts up to a total of about 5 per cent.  The alloys may be heat-treated by quenching from 700-900 DEG  C., and reheating at about 400-550 DEG C., for about 12 to 3 hours.
Patent GB-525785-A (GB)
Title: Improvements in the manufacture and illumination of transparencies and the like
IPC: G09F13/00
Filed: 1939-03-01
Abstract: 525,785. Transparencies. HOARE, R. R. March 1, 1939, No. 6645. [Class 20 (iii)] A transparency is produced by taking a fabric having a pattern thereon, stretching it on a frame and treating it with varnish or the like in order to render it transparent. The transparency a is backed by a reflector b, light being provided by a bulb f, having a reflector e. A pivoted baffle k may be provided to vary the amount of light transmitted to the transparency. By using two of these arrangements back to back two transparencies can be illuminated by one light source.
Patent GB-839991-A (GB)
Title: Improvements relating to casting processes for the manufacture of interlinked articles such as chains
IPC: B22D25/02
Filed: 1957-02-28
Abstract: 839,991. Moulds. HOWELL, J. P. May 22, 1958 [Feb. 28, 1957], No. 6664/57. Class 83 (1). In a method of making an interlinked article such as a chain, a shell mould for casting one link is assembled interlinked with another link or with another shell mould for casting a link, and the metal cast into one or both moulds. The prefabricated links 18 may be formed of rod or wire bent and welded, or by casting in a shell mould. A four-piece chill mould 19, 20 (two pieces only shown in Fig. 3), with a shell-type runner piece 26, is then assembled in interlinked relationship with the links 18 on a conveyer 10, the mould parts being clamped to a support plate 12 by rings 29, 30. The chain 34 proceeds to a station at which the risers 35 are cut off and the chain dressed or annealed.
Patent GB-442933-A (GB)
Title: Improvements in or relating to templates for more efficiently meeting the general and specialised requirements of mechanical dentistry
IPC: A61C19/05
Filed: 1935-03-04
Abstract: 442,933. Dental appliances. BOYLE, H. H., 81, Walters Road, Swansea. March 4, 1935, Nos. 6682 and 12574. [Class 81 (ii)] A template for use in forming and mounting occlusion models and for setting up arti. ficial teeth, and also adapted for use in form. ing models for plugging bleeding lesions and with certain modifications for the production of splints for fractured jaws is formed to correspond in plan with the outline of the tooth carrying ridge of a jaw and has a flange 11 or 22 extending towards the palate or tongue respectively, and an occlusion surface 13 or 21, facing towards the teeth of the jaw in question, which is curved to conform approximately to curves defined by the incisal edges and cusp ends of a set of teeth as viewed in front and side elevation and also sloped as viewed in cross section to correspond with the slope of the incisal edges and cusp ends of the teeth. The templates are formed with concentric inner and outer boundaries 14, 16 and 23, 25 in front and rearwardly extending portions 15 and 24. The desired curvature of the occlusion surfaces may be attained approximately by forming them to a spherical or ellipsoidal curvature conveniently by the use of a former of the required shape. As shown in Fig. 10 such a former has an ellipsoidal portion 30, to which the anterior part of a template is shaped, and a spherical portion 31 to which the posterior part is shaped. The templates are marked with lines 41, 42, 43 parallel to the outer edge of the template and radial lines 46, 46, 47 for use in positioning teeth of various sizes in jaws of different dimensions. The constructions shown in Figs. 1-4 are suitable for an edentulous mouth, in the case of a mouth the front teeth of which are present an opening corresponding to the position of these may be formed between the anterior edge and the flange. The use of the templates for forming bite blocks and setting up teeth is described in detail in the Specification. The modified construction shown in Fig. 8 is suitable for use in preparing a splint for a fractured jaw, a model being first prepared with the aid of the template and the completed splint secured to the template by ligatures passing through the slots 52 and around the splint proper. Templates marked as described may also be used as gauges for noting progress in orthodontic work.
Patent GB-922542-A (GB)
Title: A machine-tool control system
IPC: H03M1/00
Filed: 1961-02-23
Abstract: 922,542. Numerical control systems; electric selective signalling systems. SOC. GENEVOISE D'INSTRUMENTS DI PHYSIQUE. Feb. 23, 1961 [Feb. 24, 1960], No. 6698/61. Classes 38 (6) and 40 (1). In a punched-tape controlled numerical positioning system, tape errors are checked by duplicating the tape and the associated command signal circuits. A first binary coded tape 11 is read at 13, the resulting signal converted to six digit decimal at 14, and this is stored at 15 on telephone selectors before being converted at 16 to phase modulated A.C. signals. The three signals representing the three most significant digits are applied to three synchros 17 which are appropriately geared to a leadscrew 19 to measure the position of the worktable 10, and any error is amplified at 26 to control a servomotor 25. The signals representing the three least significant digits are applied to two (see below) synchros 18 which are appropriately geared to a lead-screw 20 to measure the position of a photo-electric microscope 29, and any error is amplified at 23 to control a servomotor 24 so that the microscope is moved the fine distance which is a fraction of one of the divisions of a scale 27 which is attached to the table 10. The output of the photo-cell is then applied via switch 28 to the amplifier 26 so as to move the table until the appropriate scale division, which can be checked visually, is centred beneath the microscope. The digital to analogue converter 16 consists of five synchros to the stators of which voltages are applied from five tapped transformers in respect of the first five digits of the decimal command signal, the final, least significant digit controlling the tappings of a sixth transformer which adds a signal to the rotor of the 5th synchro, Fig. 3 (not shown), so that five output lines carry the six digits. The second, checking tape 11<SP>1</SP> is similarly read and decoded, and the resulting phase-modulated signals are compared with the outputs of either the banks of synchros 17, 18 or with duplicate banks of synchros 17<SP>1</SP>, 18<SP>1</SP>. If, when the table is finally positioned, the second channel shows an error signal, unspecified devices 43, 44 cause a warning lamp to light, or stop the cutting tool. Specifications 684,435, 686,274, 864,049 and 864,050 are referred to.
Patent GB-490842-A (GB)
Title: Improvements in and relating to means for use in grinding and machining the seatingsof valves
IPC: B24B15/04
Filed: 1937-03-06
Abstract: 490,842. Grinding and machining valve seatings ; turning ; milling. RATCLIFFE, J. T. March 6, 1937, No. 6700. [Class 60] [Also in Group XXII] A support for holding a poppet valve during grinding, milling or turning its seating comprises a block built up of strips 12, formed with aligned V-shaped or similar recesses 14, spaced apart by strips 13 which extend at 15 beyond the edges of the strips 12. The valve stem 16 rests in the recesses 14, and is held therein, so as to permit of rotation but not of movement of the axis, by holes 18 in links 17 which lie in the spaces between the strips 13 and are united by a pin &c. 19, wedges 20 being driven between the pin and the strips 13, and lying between the parts 15. The valve stem has fitted thereon a chuck 21 driven through a flexible connection or through a universal joint ; the support may form part of a machine or may be clamped to any suitable foundation.
Patent GB-1404744-A (GB)
Title: Variable impedance for use in testing coaxial cables
IPC: G01R31/02
Filed: 1974-02-14
Abstract: 1404744 Measuring input impedance of coaxial cable STANDARD TELEPHONES & CABLES Ltd 14 Feb 1974 6755/74 Heading G1U An adjustable impedance unit comprises a coaxial socket, 1, Fig. 1, a short length of coaxial cable 5, two resistors R1, R2, and a potentiometer RV1 with an adjusting knob 8, all mounted inside a metal screen 10 and connected as shown in Fig. 2. In use the unit simulates a coaxial cable having an adjustable impedance and forms part of a bridge Fig. 3, across which a swept r.f. is applied, for measuring the impendance of a coaxial cable under test.
Patent GB-1294198-A (GB)
Title: 2-amino-6-chloro-pyrimidines
Inventor: SCHNEIDER RUPERT
IPC: A01P13/00
Filed: 1970-02-12
Abstract: 1294198 Herbicidal pyrimidines SANDOZ Ltd 12 Feb 1970 [14 Feb 1969] 6770/70 Heading A5E [Also in Division C2] Herbicidal compositions comprise, in combination with a carrier, a compound of formula  wherein R 1  is C 2-6  alkyl, C 3-6  alkenyl or cycloalkyl and X is hydrogen or halogen, or an acid addition salt thereof. Other herbicides may be incorporated, for example ureas, saturated or unsaturated haloacids, halobenzonitriles, halobenzoic acids, phenoxyalkl-carboxylic acids, carbamates and triazines.