baber/WOPTO huggingface dataset:
Patent GB-831576-A (GB)
Title: Improvements in or relating to cutting devices for filter-tip cigarette manufacture
Inventor: HORGAN GEORGE DANIEL
IPC: A24C5/28
Filed: 1957-07-30
Abstract: 831,576. Cigarette-making machines. AMF Ltd., [formerly INDUSTRIAL MACHINERY CO. Ltd.]. July 3, 1958 [July 30, 1957], No. 24065/57. Class 130. Stationary steadying discs 9, 10 bear at their rims 12 on a rotary knife 1 subdividing filter-tip cigarette assemblies 4 lying in flutes 3 of a rotary drum 2. The discs 9, 10 are arcuately cut away to clear the drum 2 and knife-grinding wheels 7, 8 and one disc 9 is hinged at 19 to allow access to the knife and bears thereon by snap-over spring loading 22. Rotation of the assemblies 4 during sub-division is prevented by freely rotatable nylon, polytetrafluorethylene or rubber-faced rollers 24 bearing on the filtertip portions 6 of the assemblies under spring loading 30, or alternatively appropriately driven fluted discs may be used. In a modification, the discs 9, 10 are each replaced by a spider carrying three circumferentially spaced rollers engaging one knife side edge-on, the spider arms or the spiders themselves being hinged to allow access to the knife.
Patent GB-1114565-A (GB)
Title: Improvements in or relating to semiconductor light source
IPC: H01L27/00
Filed: 1965-06-08
Abstract: A semi-conductor light source has a planar structure with a surface-emergent PN junction defined by two regions each of which has a characteristic dopant concentration highest at a distance of under 1m  from the surface so that when a suitable reverse bias is applied avalanche breakdown occurs near the surface and a minimum of the short wavelength emitted light is absorbed by the body. The impurity concentration gradient across the junction may exceed 7.0 x 1023 atoms/cm.3-cm. at the surface of the body and may be greater than 2.0 x 1023 atoms/cm.3-cm. within 5m  of the surface.  In an embodiment a semi-conductor body contains a matrix of such PN junctions which may be selectively energized.  A portion of a typical matrix is illustrated in Figs. 4, 5 and 6 (not shown).  A plurality of P-type cells (60) are formed in an N-type silicon wafer by the diffusion of aluminium, indium, or boron.  Into each of these cells arsenic, antimony, or phosphorus is diffused through oxide masking to form square N+ regions at the surface.  Two N+ or P+ strips (68, 70) are diffused into each cell, one at each of two opposite sides of the square junction.  Electrodes are formed on the oxide-covered matrix either by total vapour deposition of metal and selective removal or by masked deposition.  The square N+ regions 64 of the cells, which define the light-emitting junctions, are connected in columns by parallel strip electrodes (72).  The P regions 60 of the cells are connected in rows by a set of parallel electrodes (78) consisting of metallic sections joined by the highly conductive N+ or P+ strips (68, 70) lying beneath the column conductors (72) and insulated therefrom by the oxide covering the body. Connections to the matrix are made at enlarged areas (90, 88) at the ends of the row and column conductors.  Light emitted from the square junctions may be collected as circular spots on a photographic film placed close to the matrix, with no intervening optics.
Patent GB-383990-A (GB)
Title: Improvements in or relating to light-reactive cells
IPC: H01L21/12
Filed: 1931-08-27
Abstract: 383,990. Light-sensitive cells. FALKENTHAL, E., 11, Humboldtstrasse, Dahlem, Berlin. Aug. 27, 1931, No. 24094. Convention date, Aug. 30, 1930. [Class 40 (iii).] A light-sensitive cell comprises a baseplate, a highly compressed photo-electric layer, and a translucent electrode formed by rubbing, spraying, or dusting a finely divided conducting material on the photo-electric layer so that the resistance of the cell amounts to at most 1000 ohms per square centimetre of area. The baseplate is of brass or iron and is roughened e.g. by milling, to ensure good contact with the photo-electric layer. The photo-electric layer is compressed to exclude gases and may have its conductivity increased by the addition of graphite, potassium, tellurium, alkaline metals; the salts, oxides or selenides of these metals, or radio-active substances. The translucent electrode is formed by spraying, dusting or rubbing on finely divided conducting materials such as graphite or Wood's metal which may beheated to a temperature, e.g. 200‹ C, at which the photo-electric material is not affected. Where contacts exist between the two electrodes, to avoid rejection of the cells, a heavy current may be passed through the cell to fuse the contacts and destroy them. According to the Specification as open to inspection under Sect. 91 the baseplate may be chemically united to the photo-electric layer ; the photo-electric layer may be pressed either in a hot or cold state ; the translucent electrode may be deposited thickly and reduced by polishing.and.may be a chemically produced deposit of silver. This subject-matter does not appear in the Specification as accepted.
Patent GB-1207460-A (GB)
Title: Method and apparatus for servering steel bars
Inventor: SAITO T
IPC: B23D31/00
Filed: 1968-05-21
Abstract: 1,207,460. Breaking; shearing; forging; annular tool heads. T. SAITO, M. SAITO, M. SAITO and H. SAITO. 21 May, 1968 [1 June, 19671, No. 25115/68. Headings B3E, B3H, B3T and B3W. Steel bar a is severed by forming a V-section groove b in its circumferential surface, and pressing a severing tool 33 having a sharp cutting edge of V cross-section into the groove whilst the bar is supported by two members disposed one on each side of the groove. The groove may be formed in a round section bar a by cutting wheels 14 carried by levers 11 pivotally mounted on a rotary member 4, the bar being restrained from moving with the member 4. A ring cam 8 has three grooves each associated with respective rollers 13 on levers 11. When the ring cam 8 is rotated in the same direction, i.e. clockwise as seen in Fig. 1, as the rotary member 4 but at a slightly greater speed, the rollers are forced along cam surfaces 17 and the cutting wheels are forced into the bar. Cutting bits 60, Fig. 3, may be substituted for the cutting wheels. The grooved bar is clamped against support rollers 26 by hydraulicallyactuated clamps 27. The rollers are journalled in carriages 25 running on rollers 24. An hydraulically-operated tool 33 with an arcuate cutting edge of V-shaped in cross-section is forced into the groove. The carriages 25 move apart during the severing operation. Alternative support means comprise blocks (61) (Fig. 7, not shown) slidably mounted on a base (23) and urged towards each other by springs (62), the upper surface of the blocks adjacent each other being cut away to form rounded faces. In an alternative embodiment of the invention (Figs. 17-20, not shown) the severing tool 33, and a similar tool (64) opposed to it, are used to form diametrically opposed grooves in a round section bar, the bar being rotated through 90 degrees and grooved again to complete the circumferential groove. The bar is then supported on the means described with reference to Fig. 7 and the severing tool 33 is used alone to sever the bar. An alternative wheel cutter device for grooving square-section bars (Figs. 15 to 16, not shown) comprises a C-frame (55) supporting opposed rotary bodies (56), each carrying four equispaced wheels (63), two opposed faces of the bar being grooved by feeding the bar between the rotary bodies or feeding the C-frame relatively to a stationary bar. Cutting bits may replace the discs (63).
Patent GB-476830-A (GB)
Title: Improvements in or relating to cathode ray tubes and the like
IPC: H01J29/52
Filed: 1936-09-04
Abstract: 476,830. Cathode-ray tubes. GENERAL ELECTRIC CO., Ltd., BENJAMIN, M., and JENKINS, R. O. Sept. 4, 1936, Nos. 24236 and 31823. [Class 39 (i)] In a cathode-ray tube or the like, in which an indirectly-heated cathode 6 of cylindrical form and having at one end a thermionically active surface 3, Fig. 1, is to be accurately located relatively to some face of a modulating electrode 1, the cathode is provided with a shoulder 7 which abuts against a washer 4 of insulating material, such as mica or steatite, so that a relatively small part 8 bearing the surface 3 projects into or through a hole in the washer, and the washer fits into a recess in the electrode 1 so that one of its faces abuts against the face of the electrode. The electrode 1 has an aperture 2 in which the emissive surface lies. In a modification, a narrow cathode has a projecting shoulder and is preferably introduced into the washer from above so that the shoulder engages the top face of the washer. In another form, shown in Fig. 3, the modulating electrode is divided into two parts 1 and 11 spaced a small distance apart and the cathode is supported from part 1 so that the plane of the emissive surface 3 lies between the two parts. Part 11 has an extension 12 reaching nearly to the anode 13. In practice, the modulation is applied to part 11, while a constant bias applied to part 1 enables the slope of the characteristics to be varied. Typical curves of this variation as shown. Dimensions and spacing of the electrodes are specified.
Patent GB-224663-A (GB)
Title: Improvements in or relating to variable speed gears for motorcycles and the like
IPC: B62M25/04
Filed: 1923-09-29
Abstract: 224,663. Raleigh Cycle Co., Ltd., and Wilkie, W. Sept. 29, 1923. Controlling variable-speed gearing.-A striking shaft A, Fig. 3. arranged parallel to main and lay shafts of a variable-speed gear is formed as a rack with teeth A<1> at an angle of 45‹. The teeth A<1> are engaged by like teeth C', Fig. 1,. upon a pivoted' section C operated by a handlever E. The shaft A is thus slid longitudinally perpendicular to the plane of the sector C. A spring bolt G, Fig. 2, locks the shaft A in proper positions. In a modification shown in Fig. 4. the sector is replaced by a second rack H operate I by a pivoted lever J.
Patent GB-1143936-A (GB)
Title: Improvements in or relating to mowing machines
IPC: A01D34/66
Filed: 1966-03-18
Abstract: 1,143,936. Mowing machines. TEXAS INDUSTRIES Inc. 18 March, 1966 [29 March, 1965], No. 24286/68. Divided out of 1,143,934. Heading A1F. The subject matter of this application is described in Specification 1,143,934. The claims are directed to the mounting of the mowing members.
Patent GB-685000-A (GB)
Title: Improvements in fire extinguishers of the foam type
IPC: A62C5/00
Filed: 1950-10-05
Abstract: 685,000. Fire-extinguishers. MORRIS, C. Oct. 4, 1951 [Oct. 5, 1950], No. 24329/50. Class 47(ii) A foam fire-extinguisher comprises an outer container A for water D<SP>2</SP> and a single inner container C for compressed or liquefied gas D' and foamforming substance D. The inner container C which communicates with the outer container A by holes c' is closed by a valve or by a diaphragm c<SP>1</SP> preferable by a spike b. In the form shown, which is used uninverted, an inner cylinder C<SP>1</SP> filled with foam - forming substance is provided in the inner container C and the foam is supplied to a foam nozzle A' by a dip tube a<SP>1</SP>. In a modification which is of the inversion type, the dip tube is formed with an internal baffle and an ordinary nozzle is used. In another modification, also of the inversion type, the dip tube is omitted, but a foam nozzle is provided.
Patent GB-243648-A (GB)
Abstract: 243,648. Lindahl, A., and Luttropp, C. Aug. 7, 1925. Transfer mechanism of the externally operated type for transferring " up " for either direction of rotation comprises two shafts 24, 25 having a series of staggered projections 26, 27 adapted to be driven in opposite directions and pinions 21 constantly engaging the numeral wheels 22, the pinions being carried on arms 19 adapted to be shifted from a middle position as shown in Fig. 5 into operative relation with the projections on one or other of the shafts 24, 25 by a corresponding transfer member 10 co-operating with the transfer pin 9 on the numeral wheels. Each member 10 is mounted on a pivot 11 and is engaged by a notched detent 14 to hold it in any one of its three positions. A slot in the member 10 engages a pin 23 on the carrier arm 19 associated with the next higher denomination, and when the member 10 is rocked at transfer the arm 19 is rocked to position the pinion 21 into the path of the projections 26. 27 depending on the direction of rotation. Immediately after transfer the projections engage one or other of the surfaces 37, 38 of the arms 19 to restore t'hem to the normal or mid position. The shaft 6 which is operated on the return stroke of the main actuating sector 2 drives a barrel pinion 33 on the frame. A pinion 34 on the carriageengaging the drum through gearing 35, 36, 29, 28 drives the shafts 24, 25 in opposite directions. Specification 240,889 is referred t'o.
Patent GB-517955-A (GB)
Title: Improvements in vehicle wheels and detachable hub caps therefor
IPC: B60B7/06
Filed: 1938-08-19
Abstract: 517,955. Vehicle wheels., DUNLOP RUBBER CO., Ltd., and WHALE, G. H. Aug. 19, 1938, No. 24419. [Class 144 (ii)] Relates to a hub-cap or wheel-covering disc 10 having a flanged edge 13 adapted to be sprung over a series of projections on the wheel, as described in Specification 456,866, and consists in providing the projections 6 with stems 7 which are secured atright angles to radial seats on the wheel body or rim. In the form shown in Figs. 1 and 2, the recessed wheelcentre is stiffened by depressions 4, one of which is formed with a stepped portion 4a providing a radial seat 5 for one of the studs 6. Further seats 8 are provided by the radial walls of shallow depressions 9 between the depressions 4. Fig. 5 shows a modification in which the seats 5 are provided by small recessed portions 11 of the wheel disc. The studs 6 may be secured to the flange 14, or to the outer wall of the well-base of the rim.
Patent GB-767951-A (GB)
Title: Process for the manufacture of polymers and copolymers of vinyl chloride
IPC: C08F8/28
Filed: 1953-09-03
Abstract: Polymers and copolymers of vinyl chloride are prepared by polymerizing vinyl chloride alone or together with another monomer such as vinyl acetate in aqueous suspension with the aid of a water-insoluble catalyst such as benzoyl or lauryl peroxide and a hydrophilic colloid such as polyvinyl alcohol as emulsifying agent, the polymerization product being after-treated in aqueous suspension with a mixture of an aldehyde and/or a ketone with a per-acid such as perchloric or persulphuric acid or with the salt of such an acid such as potassium persulphate or perchlorate or sodium perborate and a mineral acid such as sulphuric or hydrochloric acid.  Aldehydes and ketones specified are formaldehyde, acetaldehyde, propionaldehyde, butyraldehyde, diethyl-acetaldehyde, benzaldehyde and cyclohexanone. The products have improved solubility in organic solvents. Specification 466,173, [Group IV], is referred to.
Patent GB-240657-A (GB)
Title: Improvements in or relating to floors for buildings
IPC: E04F15/20
Filed: 1924-10-15
Abstract: 240,657. Vertigan, E. H. H. Oct. 15,1924. Wood-block flooring. -Parquet floor panels, each consisting of a number of blocks 2 secured together to form any desired pattern, are supported at all their edges by the rabbeted portions 4 of wooden runners 1, which form part of the floor surface. The parquet blocks forming a panel are secured together by tongues engaging in grooves and by gluing, and a, wooden frame member 3 surrounding the group of blocks 2 is similarly connected to the said blocks. Metal &c. tongues 5 engage in grooves in the adjacent edges of the runners 1 and panels. The runners. 1, which extend for the length of two panels, are secured to the sub-floor or battens 6 bv screws and are connected together by the tongues 5. Pads 8 of compressed cork, india-rubber, felt, &c. may be arranged under the junctions of the run* ners, the remainder of the space below the panels being filled with fine cork shavings, cork wool &c.
Patent GB-1186798-A (GB)
Title: Field Scanned Gyromagnetic Resonance Spectrometer
Inventor: PAITICH RONALD MICHAEL
IPC: G01R33/62
Filed: 1968-05-22
Abstract: 1,186,798. Gyromagnetic resonance spectrometers. VARIAN ASSOCIATES. May 22, 1968 [June 12, 1967], No.24525/68. Heading G1N. In a nuclear magnetic resonance spectrometer, the intensity of the polarizing magnetic field is scanned through the resonance spectrum of a first group of gyromagnetic nuclei in a sample irradiated at a first, fixed, radio frequency and the sample is also irradiated at a second radio frequency which is scanned in concert with the scan of the polarizing magnetic field to sustain gyromagnetic resonance of a second group of gyromagnetic nuclei throughout the scan through the spectrum of the first group. As shown in Fig. 1, a fixed frequency transmitter 3 generates a radio frequency f 0  near the nuclear resonance frequency of the nuclei under analysis, and a fixed audio frequency transmitter 4 modulates the polarizing magnetic field at a frequency f 1  such that resonance of the first group of nuclei is produced at the first, fixed, frequency (f 0  + f 1 ). The frequency f 2  of a variable audio frequency transmitter 13 is controlled by a signal from the field scan generator 12 such that resonance of the second group of nuclei is sustained at the second frequency (f 0  + f 2 ) throughout the scan through the spectrum of the first group. The variable frequency transmitter 13 may comprise a voltage tunable oscillator (15, Fig. 2, not shown), controlled by an error signal formed by combining a feedback signal with the signal from the field scan generator. An adjustable reference voltage source (21) enables the starting frequency of transmitter 13 to be selected. The arrangement shown in Fig. 1 is suitable for decoupling the second group of nuclei from other groups by producing saturated resonance of the second group. However, the second group can be excited only weakly enabling the effect of resonance of the second group on the resonance of the other groups in the sample to be observed. The second frequency may be produced by a second r.f. trans mitter having a variable output frequency f 3  equal to (f 0  + f 2 ).
Patent GB-277964-A (GB)
Title: Improvements in and connected with gas masks
IPC: A62B18/02
Filed: 1927-09-19
Abstract: 277,964. Deutsche Gasgluhlicht Auer- Ges. Sept. 25, 1926, [Convention date]. Respirators.-In gas masks a the eyes are enclosed in a goggle-like appliance e the eye-pieces b of which are secured as at c to the material of the mask. The appliance c is of soft material and is connected to a member d fitting closely over the nose and cheeks. The upper and side edges of the appliance are connected to the corresponding edges of the mask.
Patent GB-794689-A (GB)
Title: Production of dicyclohexylcarbodiimide
Filed: 1956-08-13
Abstract: 794,689. Dicyclohexylcarbodiimide. UCLAF. Aug. 13, 1956 [Sept. 15, 1955], No. 24716/56. Class 2 (3). Dicyclohexylcarbodiimide is produced by the reaction of p-toluene sulphochloride, in the presence of a tertiary base, with dicyclohexylurea at 65-80 C., cooling the reaction mixture, separating the resulting salts of the tertiary base by adding a solvent in which they are insoluble, evaporating the solvent and distilling the resulting dicyclohexylcarbodiimide in a vacuum. Suitable tertiary bases are pyridine or methylethylpyridine, and a suitable solvent for eliminating the pyridine salts is petroleum ether. Excess p-toluene sulphonic acid is preferably used, and the excess, left after the reaction, destroyed by boiling with diethylamine.
Patent GB-234040-A (GB)
Title: Improved apparatus for heating milk and other liquids
IPC: A01J9/04
Filed: 1924-10-17
Abstract: 234,040. Bergedorfer Eisenwerk Akt.- Ges. May 16, 1924, [Convention date]. Sterilizing milk &c.-Milk or other liquid to be heated is caused to pass over the surface of one set b of superposed heated tubes, which are unenclosed, and subsequently over another set a which are enclosed in a casing g, g<1> to prevent loss by evaporation. When the set b is superposed as shown on the set a a collector c is placed between the sets.
Patent GB-699300-A (GB)
Title: Improvements in or relating to electric protective arrangements
Inventor: ELLIS NORMAN SADLER
IPC: H02H3/30
Filed: 1950-10-10
Abstract: 699,300. Protective cut-out arrangements. REYROLLE & CO., Ltd., A. Oct. 1, 1951 [Oct. 10, 1950], No. 24778/50. Class 38 (v) A fault-responsive arrangement for energising the starting device G of the carrier-current protective gear of, e.g. Specifications 598,581 or 610,610, comprises an operating and a bias network, H<SP>1</SP>, H<SP>2</SP>, respectively, both fed from the current transformer secondaries D<SP>1</SP>, D<SP>2</SP>, D<SP>3</SP>, the outputs of the networks being connected in opposition and normally balanced, and means for delaying the effective response of the network H<SP>2</SP> to sudden changes in the line currents, so that the outputs unbalance and device G is energised. In one form, Fig. 3, the networks H<SP>1</SP>, H<SP>2</SP> are arranged respectively, to segregate positive, and positive and negative phase-sequence components, which are applied over saturable transformers U, Q to bridge rectifiers U<SP>1</SP>, Q<SP>1</SP>. The rectified outputs are connected in opposition, that from rectifier U<SP>1</SP> across a resistance U<SP>3</SP> and that from Q<SP>1</SP> across a condenser Q<SP>2</SP> in series with a resistance Q<SP>3</SP> which provides a time-delay in the charging of the condenser. A rectifier Q<SP>4</SP> ensures a rapid discharge. In a modification, Fig. 2 (not shown), the network H<SP>1</SP> comprises the system described in Specification 683,989. Either arrangement ensures the detection of a fault in cases where the maximum permissible load current under some conditions may exceed the three-phase fault current under other conditions.
Patent GB-206299-A (GB)
Title: Improvements in window blind roller mechanism
IPC: E06B9/78
Filed: 1922-09-13
Abstract: 206,299. Tidy, B. H. Sept. 13, 1922. Roller-blinds.-A brake device comprises a lever 7 pivoted at 8 upon the blind - roller supporting brackets 2 and provided with a removable rubber wedge-shaped brake shoe 11 normally held by gravity in braking engagement with the smooth periphery 6 of one flange of the cord pulley, the lever 7 being oscillated and the brake relased when the operating- cord 14, which passes through a hole 10 in the lower end of the lever, is pulled. A stop 13 on the bracket 2 limits the movement of the lever.
Patent GB-654378-A (GB)
Title: Improvements in and relating to electro-dynamic devices for converting electrical oscillations into sound waves
IPC: H04R1/30
Filed: 1947-09-10
Abstract: 654,378. Matting loudspeakers. YOUNG, L., and YOUNG, A. Sept. 10, 1947, No. 24877. [Classes 83 (i) and 83 (ii)] [Also in Group XXXIX] Casting.-The throat and acoustic transformer of a moving-coil horn loudspeaker (see Group XXXIX), is cast in one piece with the slots therein. The throat comprises a hollow cone 15 (Fig. 4) with an integral coaxial solid cone 16 united by the integral solid portions 17 between radial slots 18. The solid portions 17 converge into knife-edges towards the righthand side of Fig. 4. The core parts for each of the slots are made in two parts, one set of fins 19 (Figs. 7, 8) withdrawable in one axial direction with the core 20 for the conduit 13 (Fig. 4), and the other co-operating set of fins 21 (Figs. 5, 6) with the core 22 for the concave portion to receive the loudspeaker diaphragm withdrawable in the opposite direction. The edges of the pins 19 and 21 meet and coincide when the cores are positioned ready for casting, and the core 20 has a conical recess 23 for the formation of the solid cone 16. After casting and withdrawal of the sets of fins, it may be necessary to clean flashes on the surfaces of the slots by drifting. The casting may be performed by injection, flow, pressure or by any of these in combination.