baber/WOPTO huggingface dataset:
Patent GB-634576-A (GB)
Title: Apparatus for measuring the gain factor or q of resonant electric systems
IPC: G01R27/26
Filed: 1947-01-22
Abstract: 634,576. Measurement of Q. LABORATOIRES RADIOELECTRIQUES. Jan. 22, 1947, No. 2055. Convention date, Jan. 22, 1946. [Class 37] In apparatus for determining the Q of a resonant electric system, which may be a piezoelectric crystal (Fig. 2), an adjustable frequency generator 1 supplies a crystal 2 of resonant frequency F in series with a resistance 3, the voltages across -the crystal and the series resistance being respectively applied to similar selective amplifiers 9, 6, feeding the deflection plates of a C.R. oscillograph 10. A 45 degrees phase shift may be alternatively inserted into amplifiers 6, 9, by switch 11. The frequency of generator 1 is varied until values F1, F2 are found, at which the voltage across and current in the crystal are 45 degrees out of phase, which condition is determined by a straight line trace on the C.R.O. screen when the 45 degree phase shift is inserted in the appropriate amplifier circuit. Then Q=F/F1-F2. Resistances 3, 7, 8 are proportioned so that when the predetermined phase relations are attained the C.R.O. trace is a straight line at 45 degrees to the axes. For phase equalization between the amplifiers, a suitable resistance 4 may be substituted by switch 5, for the crystal, and phase correctors in the amplifiers adjusted to give a straight line trace on the C.R.O. when zero phase shift is inserted by switch 11. The generator 1 may have a common earth with the amplifiers. In a modification (Fig. 3, not shown) the generator frequency may be controlled by the crystal under test. In a further modification (Fig. 4, not shown), the amplifiers may be tuned to a predetermined frequency and preceded by frequency changers fed by a common local oscillator.
Patent GB-474224-A (GB)
Title: Improvements in and relating to basic bessemer steel processes
IPC: C22C1/02
Filed: 1936-01-22
Abstract: In a process for producing steel in the basic bessemer converter, the pig iron, which is first desulphurized by treatment with alkalies, has a silicon content of between 0,5 and 1,25 per cent and a manganese content of below 1,25 and is then blown with air in the usual manner so as to produce finished steel.  If the silicon content is too low, it is increased before the treatment in the converter preferably by increasing the silicon content of the pig iron produced in the blast furnace.  Instead of alkalies, the iron may be desulphurized by a mixture of lime and fluorspar.  If the manganese content of the iron is too low, manganese in the form of manganese alloys should be added to the iron in the ladle, mixer or container before it is treated in the converter to protect the charge during the blowing.  If the sulphur content of the pig iron is too high, it may be submitted to a second desulphurizing with alkali &c. both before and after leaving the mixer and preferably in the ladle that conveys the iron to the mixer or from the mixer to the converter. Specifications 22201/09, [Class 72], and 460,138 are referred to.
Patent GB-228182-A (GB)
Title: High-frequency radio valve circuit
IPC: H03F1/13
Filed: 1925-01-23
Abstract: 228,182. Christe, J. F., (Assignee of Morrison, M. C.). Jan. 23, 1924, [Convention date]. Void [Published under Sect. 91 of the Act]. Thermionic amplifiers.-The grids 7, 17 of the two radio-frequency amplifiers are connected through the input coils 4, 16 respectively to the positive terminal 10 of the filament-heating battery A, the rheostat arms 5 and the parallel condensers 8, 18 being connected to the negative terminal 11. This automatically puts a positive bias on each grid and also inserts the resistance of the battery in the oscillation circuit thus tending to prevent the building up of undesirable oscillations. The plate 24 of the detector valve is connected through the telephones 25 to an intermediate point on the high-tension battery B.
Patent GB-1353257-A (GB)
Title: Coated polyolefins
IPC: C08J7/046
Filed: 1972-01-17
Abstract: 1353257 Laminates E I DU PONT DE NEMOURS & CO 17 Jan 1972 [15 Jan 1971] 2162/72 Heading B5N [Also in Division B2] A process for laminating polyolefin hydrocarbon to another polyolefin hydrocarbon or to another material, e.g. a polyurethane, nylon or natural or synthetic rubber comprises (1) irradiating the surface of said polyolefin with ultraviolet radiation, and (2) applying to the irradiated polyolefin surface a coating of a linear thermoplastic polyether resin which is a condensation product of substantially equimolar amounts of a terminal di-oic-epoxide and a dihedric phenol, and laminating under pressure. The polyolefin is polyethylene, polypropylene or a copolymer thereof which may be a rubber or a terpolymer of propylene, ethylene and a non-conjugated diene which is preferably 1,4- hexadiene, but may be an open chain diene corresponding to the formula where R 1  is a C 1 -C 8  alkylene and R 2 , R 3  and R 4  are independently hydrogen or alkyl, with the proviso that the R groups in said formula are such that the diene has 6 to 22 carbon atoms. Mixtures of the above polymers and copolymers may be used. The U.V. radiation should have a wavelength range of 2000-4000  at an intensity of 400,000 to 10<SP>7</SP> microwatt seconds per cm.<SP>2</SP> A photosensitizer, applied by immersion in a 2-10 wt. per cent solution may be used, with removal of excess after irradiation by wiping. The polyether resin may be formed by reaction of 2,2-bis-(4-hydroxyphenyl)propane together with either the glycidyl ether thereof or its derivative on reaction with epichlorohydrin. Other dihidric phenols are given by the formula where R 1  and R 2  are (1) when taken collectively with the connector carbon C, cyclohexyl or alkyl-substituted cyclohexyl groups, (2) when taken separately hydrogen, alkyl, cyclohexyl, phenyl or alkyl substituted cyclohexyl or phenyl groups, or (3) the halogen derivatives of such groups, with the provisos that (1) that the total number of carbon atoms in the group(s) attached to the connector carbon atoms does not exceed 18 and the number of carbon atoms in any of said alkyl-substituent groups does not exceed 6. The phenol hydroxy groups may be in the 2,2<SP>1</SP>, 3,3<SP>1</SP>, 2,4<SP>1</SP> or preferably in the 4,4<SP>1</SP> positions. R 1  and R 2  are, for example methyl, ethyl, isobutyl, n-nonyl or n-heptadecyl. Other phenols may be used except those with 2 ortho-hydroxyl groups in one ring. Suitable diepoxides include terminal diepoxy C 4 -C 10  alkanes, terminal diepoxy ethers such as bis-(2,3-epoxypropyl) ether and diglycidyl ethers of α,#-glycols. Condensation is carried out in the presence of a basic catalyst with the water content, if any, below 1% by wt. The polyether resin may be applied by dipping, brushing or spraying from solution. Extruded urethanes, nylon, natural or synthetic rubber of the same composition as the substrate may be used as a further coat.
Patent GB-1381341-A (GB)
Title: Sliding gate nozzles
IPC: B22D11/053
Filed: 1972-01-17
Abstract: 1381341 Ladle bottoms DIDIER-WERKE AG 17 Jan 1972 [16 Jan 1971] 2218/72 Heading F4B  A sliding gate nozzle unit adapted for use with ladles comprises a refractory nozzle plate 10 located in a nozzle frame 5 attached to the vessel bottom and a refractory sliding plate 11 adjacent the underside of the nozzle plate 10 and being linearly or rotatably slidable thereover, the plate being disposed in a framework 15, 16. In the nozzle unit, a refractory gasket of preformed compressible material is interposed between the nozzle plate and the vessel bottom and also between the sliding plate and its respective framework. The gasket may be formed of a refractory ceramic fibre felt of 48% Al 2 O 3  and 52% SiO 2 , or alternatively of 54À5% SiO 2 , 42À3% Al 2 O 3  and 3À2% Cr 2 O 3 .
Patent GB-658850-A (GB)
Title: Improvements in and relating to fireplace hearths and kerbs
IPC: F24B1/192
Filed: 1949-01-27
Abstract: 658,850. Fenders ; fireguards. SIMMONS, F. C., and SIMMONS, F. L. Jan. 27, 1949, No. 2227. [Class 126] A fireplace hearth or curb is formed as a slabbed unit having an open-topped recess along the front and ends ,a collapsable fireguard being expansibly secured to metal members to which are attached further metal members which are secured in the open-topped recess during its manufacture. Rails 20 are secured in the bottom of the cpen-topped recess 11 along the front and ends of the hearth or curb, lugs. 21, on which corner pieces 22 are pivotally mounted being attached to the ends of the rails 20. The. upper part of each corner piece 21 has pivoted to it a similar member 23, a sliding clip 25 shaped to hold the members 22, 23 in vertical position when they are raised being arranged on the upper member 23 which has a spring 27 to prevent the clip 25 from slipping when not in use. The upper ends of the upper member 23 are pivotally attached to lugs and blocks forming part of a top rail 29. Trellis members 31 are pivotally secured between lugs and flanges on the top and bottom rails 29, 20. Specification 210,859, [Class 126], is referred to.
Patent GB-347140-A (GB)
Title: Improvements in means for facilitating gear changing in motor vehicles
IPC: F16H61/02
Filed: 1930-01-22
Abstract: 347,140. Facilitating changing speed. JAMES, W. V., Myrtle Grove, and ROSSER, T. B., Dillwyn Stores, both in Pontlliw, near Swansea. Jan. 22, 1930, No. 2298. [Class 80 (ii).] When change is to be made in a gear-box D on a vehicle, a pedal H is depressed, which not only disconnects the engine clutch B and isolating clutch F, but also applies brake shoes Q, R respectively to drums S, T fast on the driving and driven shafts C, E of the change-speed gearing. A link K<3> connects the two clutch systems and links K2, K<4> respectively connect the two clutch controls to the two brake shoes Q, R, which are pivoted on the gear-box or casing D.
Patent GB-987314-A (GB)
Title: Improvements in or relating to clamping devices
Inventor: WARRY REGINALD FRANK
IPC: E04G21/26
Filed: 1963-01-18
Abstract: 987,314. Clamp fastenings; scaffolding. MARTIN HOIST & ENGINEERING CO. Ltd. Jan. 3, 1964 [Jan. 18, 1963], No. 2386/63. Headings E1S and E2B. [Also in Division B4] A clamping device, adapted to be applied to one end of a length of tube 19, Fig. 1 comprises a fixed jaw 12 adapted to be engaged over a projection 20 and a movable jaw 14, and incorporates means such that when the device is applied to the tube and the fixed jaw 12 engaged over the projection 20 rotation of the tube 19 in an appropriate direction about its longitudinal axis results in the movable jaw being moved towards the fixed jaw to grip the projection therebetween. As shown, Fig. 2, the fixed jaw 12 is hooked, and is affixed to the end of a rod or tube 10 on which a sleeve 13 carrying the movable jaw 14 is slidably mounted. The jaw 14 is held in alignment with jaw 12 by a bolt 16 on the rod or tube 10 and a slot 15 in the sleeve 13. At its opposite end to the jaw 12 the rod or tube 10 is threaded, and carries a threaded socket element 17 affixed to an attachment 18 whereby the whole device may be affixed to the end of the scaffolding tube 19. In operation the device is affixed to the end of the scaffolding tube 19 and the jaw 12 hooked over a projection 20 on a vertical scaffolding element 21. The scaffolding tube 19 is then rotated about its longitudinal, axis so that the socket element 17 is threaded further onto the rod or tube 10, and the sleeve 13 is advanced by the element 17 so that the jaw 14 engages the projection 20 and the projection is gripped between the jaws 12 and 14. The scaffolding tube 19 is thus securely coupled to the vertical element 21 and may act as a brace therefor, e.g. the scaffolding tube may be used to brace the upright of a hoist. Specifications 905,928 and 905,929 are referred to.
Patent GB-853910-A (GB)
Title: Improvements in and relating to electrical devices for recoding digital data
IPC: G06V30/144
Filed: 1958-01-24
Abstract: 853,910. Electric selective signalling apparatus. INTERNATIONAL BUSINESS MACHINES CORPORATION. Jan. 24, 1958 [Jan. 25, 1957], No. 2430/58. Class 40 (1). [Also in Group XIX] In a code converter an A.C. potential applied to a single one of ten leads 10a-10j, Fig. 1, causes, via inductive couplings 17 which may take any of the forms shown in Figs. 3-7, a corresponding combination of output leads 1, 2, 4, 8, X, Y to be marked.
Patent GB-163408-A (GB)
Title: An improved attachment for motor cars and the like
IPC: B60R9/06
Filed: 1920-01-27
Abstract: 163,408. Fox, G. Jan. 27, 1920. Luggage holders.-Side members b secured to the back part of a motor car, &c. support an arched bridge-piece d, which carries a stub-axle e and retaining-plate e<1> for carrying a spare wheel. The members b also carry a luggagecarrier, the side members f, f<3> of which are pivoted on a rod i attached to the members b. The luggage-carrier is maintained in its horizontal position by extensions f<1>, f<4> of the side members f, f<3> engaging fixed stops on the members b; these stops may be flanges b<1> of the members b. In the raised position, the luggagecarrier is pressed sideways on the rod i by a spring g till its sides and extensions thereof engage stops o, p and retain the luggage-carrierin the raised position. A lamp and number-plate bracket k may be pivotally mounted on the outermost rail j of the luggage carrier, as described in Specification 163,996, [Class 75 (iii), Lamps &c., Details of], so as always to occupy a vertical position. An enlarged part k<3> of the bracket k is normally kept in engagement with either a slotted opening m in the side member f, or with a slotted opening n in an extension f<2> by means of a spring l.
Patent GB-234445-A (GB)
Title: Improvement in construction of enclosed drive automobile bodies
IPC: B62D25/04
Filed: 1925-01-29
Abstract: 234,445. Brewster, W. May 24, 1924, [Convention date]. Doors for passenger vehicles.-In encloseddrive bodies for motor cars, a narrow strip 9 is carried by the door 2 adjacent to a narrow windscreen pillar 3, to which strip a guide 6 is fixed for a fixed glass pane 5 over the door latch equipment, a guide 7 being provided for a verticallysliding glass pane 11. This guide 7 may be dispensed with and the panes overlapped. In the case where the door is rectangular and is hinged at the front, the fixed glass pane 5 is over the latch equipment at the rear.
Patent GB-1207706-A (GB)
Title: Improvements in and relating to shock absorbers
Inventor: ANGERMANN ROLF
IPC: F16F9/46
Filed: 1968-01-17
Abstract: 1,207,706. Shock absorbers. BARKASWERKE VEB. 17 Jan., 1968, No. 2572/68. Heading F2S. An hydraulic shock absorber has means for remote control of the damping characteristics such that damping in the low piston velocity range is variable independently of damping of the higher velocity strokes. Said means comprises a spring-loaded control bush 17 and control piston 22 located in an enlargement of the axial bore 14 in the piston rod 3 and controlled by adjusting means located outside the shock absorber. On the upward stroke of the piston, oil flows through bore 21 and through bore 26 and valve 13 via the control space 16. The shock absorber is adjusted by a member (not shown) which applies pressure, via a medium in the bores 15, 14, on a control piston 22 which moves against spring 23 to throttle the inflow cross-section of bore 26 although a groove 27 (Fig. 2) ensures that 26 is never quite closed. For higher velocity strokes, when valve 13 is operative, the pressure on the control medium in the piston-rod bore may be increased so that the bush 17 moves against spring 19 to progressively reduce the passage crosssection of bore 21.
Patent GB-644313-A (GB)
Title: Arrangement for automatically changing a gramophone record
IPC: G11B17/16
Filed: 1947-01-28
Abstract: 644,313. Magazine gramophones. BOER, P. A. DE. Jan. 28, 1947, No. 2577. Convention date, May 13, 1946. [A Specification was laid open to inspection under Sect. 91 of the Acts, Jan. 28, 1947.] [Class 40 (ii)] In a magazine gramophone in which records are lowered axially on to the turntable from a pin 2 held in alignment with the turntable spindle 17 by an overhanging movable arm 5, the upper part 3 of the pin 2 is flattened to produce a step 4 to support the records, and has a separate pin, which extends downwardly from the arm 5 as far as the upper surface of the lowermost record 1, whereby all but the lowermost record 1 are retained in position on the step 4. The lowermost record 1 may be unseated from the step 4 by a member 25 or a member 24, Fig. 4 (not shown), which are operated by a cam 27 or 22 respectively on a shaft 23 rotated by a ratchet-wheel 18 during a record-changing cycle. The records are held down on a rest 13 gravitationally by means of a member 14. The length of the pin 7 extending from the .arm 5 may be made adjustable to allow for variations in the thickness of records. Specification 636,949 is referred to.
Patent GB-1058322-A (GB)
Title: Imaging system
IPC: H04N3/22
Filed: 1965-01-21
Abstract: 1,58,322. Automatic control of image scanning. HAZELTINE CORPORATION. Jan. 21, 1965 [Feb. 28, 1964], No.2707/65. Heading G3R. An electromagnetic image is converted into an electrical image which is scanned to produce corresponding electrical signals, scanning of a frame surrounding the image producing further electrical signals which are utilized to maintain the scan over a desired area. As applied to a television camera tube, an electron beam, controlled by electrostatic deflection, scans a photo-sensitive target on which an image is projected. The target is provided with a border which may be engraved on the target or projected on to it. The raster overlaps the border in all directions so that signals distinct from the video signals are produced by the scanning of the border at the beginning and end of each line and frame. The border may be composed of vertical lines so that signals of a characteristic frequency are produced which can be separated from the video signals by a bandpass filter and converted into pulses having widths corresponding to the amounts by which the scan overlaps the border. Alternatively the border may be a white area separated from the video area by a black region so that separate pulses corresponding to the amounts of overlap are produced directly. In either case the sums of the widths of these pulses produced at the beginning and end of the lines and frames are compared with references pulses and any differences utilized to control the tube time-base oscillators and thereby restore the raster to its correct size. The widths of the pulses produced at the beginning and end of the lines and frames are also compared with each other and any differences utilized to control the relative potentials of the deflection electrodes and thereby restore the raster to a central position relative to the border.
Patent GB-631748-A (GB)
Title: Improvements in and relating to concave grating spectrographs
IPC: G01J3/20
Filed: 1947-01-29
Abstract: 631,748. Spectrographs. HILGER, Ltd., A., MENZIES, A. C. G., and DOWELL, J. H. Jan. 29, 1947, No. 2834. [Class 97 (i)] A concave grating spectrograph comprises a slit, a grating, a photographic plate or film and a plane, cylindrical, figured plane or figured cylindrical mirror for forming an image of both the slit and the grating, and is so arranged that the slit, the grating, and the photographic plate or film and the images of the slit and the grating lie on a Rowland circle, while the plane of the reflecting surface of the plane mirror or, in the case of a cylindrical mirror, the generator thereof which lies in the plane of the Rowland circle, or an extension of said reflecting surface or generator, is maintained at right-angles to the line joining the slit and the image of the slit and passes through the centre of the Rowland circle. In an embodiment whereby different sections of the spectrum are brought into the width of a photographic plate P, a carrier for the grating G and the plate P is rotated about the axis of the slit S and a plane mirror M is moved to and from the slit with its reflecting surface normal to the line joining the slit S and the image S<SP>1</SP> formed by the mirror. For this purpose the mirror mount is connected by a link R to a pin Q on the plate and grating carrier, this pin being at a distance from the slit S equal to one quarter of the diameter D of the Rowland circle, on the circumference of which the grating, slit and plate are positioned. The length of the link R is also equal to D/4. Another form is described in which the slit, grating and photographic plate occupy fixed relative positions on the circumference of a Rowland circle and the mirror M is mounted on a carriage which is slidable on a bar, pivoted at the slit, and to which is pivoted a link, the other end of which is hinged to a fixed point midway between the slit and the centre of the Rowland circle.
Patent GB-657814-A (GB)
Title: Improvements in or relating to process of obtaining crystalline salts of penicillin
IPC: C07D499/16
Filed: 1948-01-30
Abstract: Crystalline salts of penicillin in which the penicillin is predominantly penicillin G are prepared by treating an alkyl acetate solution (in which the alkyl group contains 3-6 carbon atoms) derived from a filtered broth in which penicillin has been grown to a concentration of at least 150 Oxford units with a sufficient amount of potassium hydroxide, carbonate, phosphate, monohydrogen phosphate, nitrite, molybdate, sulphide, silicate, acetate, benzoate, formate or salicylate or sodium hydroxide, phosphate, monohydrogen phosphate, nitrite or acetate to produce a pH between 5.0 and 8.0 in a water solution of the crystals formed, the whole being sufficiently free from water to maintain the whole in a single phase, the reaction being performed at a temperature between 8 DEG  and 45 DEG  C., preferably between 25 DEG  and 45 DEG  C.  The added alkali metal compound may be a potassium compound added in the dry form, or may be a hydroxide dissolved in methanol or ethanol or potassium hydroxide dissolved in an alcohol having 1-6 carbon atoms, e.g. iso-amyl alcohol, or the compound may be dissolved in a small quantity of water, insufficient to form a separate layer with the alkyl acetate solution.  The alkyl acetate solution of penicillin used as the starting material may be obtained by direct extraction of a penicillin broth or may be the result of a number of re-extractions. In examples: (1)-(5) an amyl acetate solution of a penicillin broth is treated with (1) potassium hydroxide in isoamyl alcohol; (2) potassium hydroxide in one of a number of specified alcohols; (3) potassium acetate in a small quantity of water; (4) sodium hydroxide in methyl alcohol; (5) dry powdered potassium acetate; and in (6) example (1) is repeated at temperatures of 8 DEG , 25 DEG  and 35 DEG C; and (7) a n-butyl acetate extract of a penicillin broth is treated with potassium hydroxide in n-butyl alcohol.  Reference has been directed by the Comptroller to Specification 614,581.
Patent GB-1494183-A (GB)
Title: Process for the preparation of alpha-ethylbenzylamine
IPC: C07C209/00
Filed: 1976-01-26
Abstract: 1494183 Preparation of α-ethylbenzylamine MILES LABORATORIES Inc 26 Jan 1976 [28 Jan 1975] 02894/76 Heading C2C α-Ethylbenzylamine is prepared by reacting a mixture of propiophenone and a molar excess, with respect to the propiophenone, of ammonia in a solvent therefore with hydrogen in the presence of an iron-promoted catalyst under conditions which allow the reductive amination of propiophenone to occur; the iron-promoted catalyst consisting of a hydrogenation catalyst and, as a catalyst promoter, iron. Preferred hydrogenation catalysts are Raney nickel, Raney cobalt, zirconium promoted nickel, platinium or palladium.