baber/WOPTO huggingface dataset:
Patent GB-547991-A (GB)
Title: Improvements in or relating to apparatus for the detection of cracks in ferrous metals by magnetic means
IPC: G01N27/84
Filed: 1941-08-12
Abstract: 547,991. Magnetic tests direct connections between conductors. JOHNSON, L. Aug. 12, 1941, Nos. 10228 and 14985. [Classes 37 and 38 (i)] In apparatus for detecting cracks in ferrous metals in which a magnetic flux and an electric current are simultaneously passed through a test piece, a flexible conductor is elastically pressed against each end of the test piece to provide the electrical contact. On a frame 20, Fig. 1, are supported two arms 21 of good permeability material with a gap 22 between them. These form part of a magnetic circuit which also includes brackets 23 of similar material extending from the outer ends of the arms 21 to a yoke 24 which is surrounded by a coil 25 to form the core of an electromagnet for energizing the magnetic system. An adjustable headstock 26 is mounted to slide on each of the arms 21 and can be clamped in any position by a screw 27. Each headstock 26 carries a clamping jaw 33 which can be adjusted axially by a handwheel nut 30 which is prevented from axial movement by a screw pin 31, Fig. 4. Held in a recess in the clamping jaw 33 is a flexible conductor 35 consisting of a disc of wire gauze backed by a cushion 36 of rubber &c. This can be pressed outwards by a plunger 40 moved by a cam 37 operated by a handle 42. The test piece is clamped between the jaws 33, with which it makes magnetic contact. Current is passed through the test piece from terminals 43 on the brackets 23, the yoke 24 being insulated from these brackets by a thin layer of insulating material such as mica. In a modification, Fig. 10, the magnet yoke is in two portions 50, 51 of rectangular cross section, each integral with one of the brackets 23. The portions 50, 51 are insulated from one another by a thin layer of mica 52. In another construction, Fig. 12, the magnet yoke comprises a number of laminations 54 separated by layers of mica, alternate laminations being connected to the same bracket 23. The test piece is energized by the flux of the magnetic circuit and electric contact is made with its ends by operating the handles 42. Magnetic testing liquid is then applied, surplus liquid draining into a trough 57, and current is applied through the terminals 43. The yoke 24 may be divided at right angles to the lines of force instead of longitudinally.
Patent GB-631233-A (GB)
Title: X-ray apparatus for testing the physical characteristics of material
IPC: G01N23/16
Filed: 1945-10-22
Abstract: 631,233. X-ray apparatus. STANDARD ELECTRONIC RESEARCH CORPORATION. Oct. 22, 1945, No. 10261/46. Convention date, Oct. 16, 1944. Divided out of 631,168. [Class 98 (i)] [Also in Groups XXXVIII and XL (b)] Fig. 1 shows a device for X-ray testing the thickness or density of a moving web, such as metal foil in which a metal housing 11 has a rectangular bore 18 through which the web 14 is fed. A cavity 20 within the housing contains a standard sample 15 of the web and beams of X-rays from a metal-shrouded tube 22 pass through slits 21, 23 through the standard sample and the web edge respectively and fall on photocells 12, 13, the output voltages of which are applied to amplifiers 25A, 25B operating separate output meters 28, 29 or a single differential meter. The respective amplifier outputs are related to the X-ray illuminations of the respective photocells, which depend on the degree of absorption of X-rays by the standard sample and by the web, so that the readings of the output meters enable the thickness of the web to be compared with that of the sample. If the thicknesses are equal the material densities may be compared. In a modification (Fig. 3, not shown), the X-ray device for testing the web is movable laterally across it so that examination is not confined to a fixed point thereon.
Patent GB-658569-A (GB)
Title: Improvements in or relating to motor cycles and cycles
IPC: B62K25/10
Filed: 1949-04-16
Abstract: 658,569. Spring frames for motor-cycles. BIRMINGHAM SMALL ARMS CO., Ltd., and PERKINS, H. April 16, 1949, No. 10268. [Class 136 (iii)] In a motor-cycle frame of the type comprising fixed chain stays and back stays carrying two resilient suspension units to which a rear wheel is attached so that it may oscillate vertically, the frame is provided on each side with a member 1 bent to form a chain stay 3 and a back stay 2 and has welded to it at 6 upper and lower brackets 5 so that the ends of the suspension units 12 may be secured thereto. Each bracket 5 is a forging and comprises a plate-like portion 7 secured to the member 1 and an arm portion 8 at right angles to the portion 7 and provided with a hole to receive an end of the suspension unit 12. Instead of the bracket being a one piece forging the portion 7 may be made of sheet material welded to the arm 8 of bar material.
Patent GB-473199-A (GB)
Title: Improvements in or relating to dust-bins and the like
IPC: B65F1/10
Filed: 1936-04-07
Abstract: 473,199. Sanitary pails. FIEDLER, E. April 7, 1936, No. 10270. [Class 26] An attachment or fixture for a sanitary bin comprises a chamber 3 communicating with the bin and having a refusereceiving opening 9, a tipping platform 10 therein constructed with the portions on each side of the pivotal axis of unequal weights, and abutment means for limiting the movement of the platform. The platform may be moved by an external handle from the position in which it engages the abutment, which may take the form of a frame 15 or an inwardly-projecting edge, to a horizontal position in which it may receive an ash-pan 14 which is retained by holding-means. The chamber 3 may have an additional closurehood journalled on the pivots of the platform, and the abutment 15 or platform 10 may have a rubber beading. The platform is maintained in the horizontal position or against the abutment owing to the unequal weights of its two parts and in the latter position refuse may be introduced into the device and by its weight will force aside the platform and enter the bin, the platform then returning.
Patent GB-375892-A (GB)
Title: Process and apparatus for the transmission of half-tone pictures by wireless telegraphy
IPC: H04N1/00
Filed: 1931-04-08
Abstract: 375,892. Copying-telegraphy. TELEFUNKEN GES. FœR DRAHTLOSE TELEGRAPHIE, 12, Hallesches Ufer, Berlin. April 8, 1931, No. 10308. Convention date, April 8, 1930. [Classes 40 (iii) and 40 (v).] In a system for the telegraphic transmission of pictures, the amplitude range of the picture current is divided into a number of intervals, each of which is represented by and transmitted as a separate modulating frequency. At the receiving end the picture is reproduced in gradations of tone corresponding to the different frequencies. An oscillograph mirror 1, oscillated by the picture currents passed through an amplifier and rectifier 21, reflects a lightbeam from a source 2 as a light spot 4 which, in accordance with current amplitude, falls upon one of a number of photo-electric cells 5, 6, 7 connected through resistances 8, 9, 10 in the grid circuits of thermionic valves 11, 12,13 respectively. The valve rendered operative causes one of the A.C. generators 14, 15, 16 to transmit a corresponding modulating frequency w1, w2 or w3 to the line. One of the intervals of the picture current amplitude may be transmitted as unmodulated carrier frequency. The system is stated to reduce the effects of fading since the output of the receiving device selectively operated by any of the frequencies is arranged to be of constant strength. Specification 360,263 is referred to.
Patent GB-538549-A (GB)
Title: Improvements in valve stems for inner tubes of pneumatic tyres
IPC: B60C29/04
Filed: 1940-06-14
Abstract: 538,549. Moulding tyre valves. UNITED STATES RUBBER CO. June 14, 1940, No. 10348. Convention date. Aug. 1, 1939: [Class 87 (ii)] [Also in Group XXIX] The stem of a tyre valve is comprised entirely of moulded heatset plastic material and has means formed in the wall of the bore through the stem for releasably securing the interior parts of a valve in position. When making the stem a core member 10 of rubber compound which will cure to a hard consistency, formed by extrusion or wrapping a strip of rubber round a mandrel, is aligned with a shorter cylindrical element of softer compound and enclosed in two sleeves 12, 13 of soft compound, the sleeve 13 being shorter than the sleeve 12. Circular or oval layers 14, 15, 16 of successively increasing sizes are applied to the base of the composite stem and the whole is inserted in a curing mould 20. This mould has a cavity 21 corresponding to the desired external shape of the stem, which includes a screw-threaded part to form the thread for attaching the usual dust-cap. A detachable core member 29 having a screwthreaded part 30 to form internal threads for attaching the interior parts of the valve is inserted through the base of the mould. A cover plate 35 having a square boss 37 and a hole 36 adapted to engage the upper end of the core member is secured to the top of the mould. After curing or partial curing the core member is first unscrewed by means of a screw-driver slot 40 and then the stem is unscrewed by the insertion of a suitable wrench in the square depression formed by the boss 37. The stem may be moulded without the threads which are afterwards formed by a die and tap. The hard compound may be one containing over 25 parts of sulphur to every 100 parts of rubber and the soft compound one containing from 5 to 10 parts of sulphur for every 100 parts of rubber. The hard rubber part may be first semi-cured and the soft portions subsequently moulded and vulcanized, adhesion between the rubber compounds being secured by the use of a vulcanizing cement. Other thermoplastics alone or mixed with rubber may be used.
Patent GB-538550-A (GB)
Title: Improvements in or relating to stands for bottles and the like
IPC: A47F7/28
Filed: 1940-06-14
Abstract: 538,550. Bottle stands. SPARROW, W. J., and COTY (ENGLAND), Ltd. June 14, 1940. No. 10352. [Class 116] A stand for supporting a bottle 6 for scent or throat spray in an inclined position comprises a smooth curved upright 2 secured by a bolt 3 to a base 1. The neck of the bottle is secured in an opening or recess at the end of the upright by ,means of a screw cap 7 and the lower part of the bottle may rest upon a part of the curve. The upright may be of transparent synthetic resin and the base of stainless steel.
Patent GB-598917-A (GB)
Title: Improvements in heat exchangers of the honeycomb type
IPC: F28F9/02
Filed: 1945-04-25
Abstract: 598,917. Tubular heat-exchange apparatus. SOC. ANON. DES USINES CHAUSSON. April 25, 1945, No. 10431. Convention date, April 14, 1944. [Class 64 (iii)] In a heat-exchanger of the honeycomb type, the tubes 6 are made in one piece with at least one integral inner partition 8. The cross section of the partition may decrease from the wall of the tube towards the centre and the ends of the tubes are flared by means of a punch, slotted to fit the partitions, and a die, and welded, brazed &c. together, the partitions being cut out of the ends to facilitate flaring (Fig. 4). The tubes may be roughened to cause eddying of the flowing fluids.
Patent GB-1082876-A (GB)
Title: Record tape feeding apparatus
IPC: G11B15/56
Filed: 1965-03-11
Abstract: 1,082,876. Feeding magnetic tapes. RADIO CORPORATION OF AMERICA. March 11, 1965 [April 1, 1964], No. 10449/65. Heading G5R. [Also in Division G1] A tape feeding system comprises a reel 10 from which the tape passes between a roller guide 24 and a strip guide 26 to a reservoir loop 28, an idler roller 32, a vacuum tension loop 34 and a pair of oppositely rotating vacuum capstans 36 and 38. The speed of the motor 12 driving the reel 10 is controlled as a function of the amount of tape on the reel and the amount of tape in the reservoir 28. Between the guide 24 and reel 10 a lamp L directs light on to the tape to be reflected to a photo-cell PC so that the output of the photo-cell depends on the angle of the tape which depends on the diameter of the tape on the reel 10. The photo-cell is preferably a photo-resistance connected in parallel with a resistance R1 connected in series with a resistance R2 across a tachometer generator G driven by the motor 12 driving the reel 10. The voltage across R2 forms one input to a motor control circuit, another input of which is derived from photo-electric means sensing the length of reservoir loop 28. The two inputs feed respective amplifiers (84, 85, Fig. 2, not shown), the outputs of which are added and supplied as one input to a differential amplifier (83), the other input of which is a forward or reverse signal. The output of the amplifier (83) has the sense of the required direction of rotation and energizes appropriate circuits (92 or 93) controlling the speed of the motor in accordance with the magnitude of the output of the amplifier (83).
Patent GB-105620-A (GB)
IPC: B41B25/00
Abstract: 105,620. Lanston Monotype Corporation, (Lanston Monotype Machine Co.). April 20, 1916. Strip-perforating machines; justifying type. - Relates to machines having repeating-mechanism such as is described in Specification 7248/15, and in which the justification indicator is operated by a constantly-acting motor as is described in Specification 27264/13. In order to prevent damage owing to the high speed at which the machine works when the repeating-mechanism is in action, the justification-indicator buffering motor is provided with a cut-off or relief valve which is conveniently operated by the repeat-key. The buffering motor A of the indicator D is supplied with air from a chamber C through a pipe B in which is a valve 1 which is normally open and is closed by a projection on the repeat key-bar.
Patent GB-1015334-A (GB)
Title: Process for making polymeric materials derived from vinyl chloride and other monomers
Inventor: PHILPOT DAVID JOSEPH
IPC: C08C1/14
Filed: 1963-03-18
Abstract: Polymeric compositions are obtained by a polymerization process comprising the steps of: (1) forming an aqueous slurry of a vinyl polymer made by polymerizing vinyl chloride together with 0 to 40% by weight, based on the weight of the vinyl polymer, or one or more ethylenically unsaturated monomers copolymerizable therewith, said vinyl polymer being capable of totally absorbing the monomeric component used in step (2); (2) adding to said slurry from 25 to 60% by weight of a monomeric component, based on the weight of the vinyl polymer and monomeric component, said monomeric component comprising at least one monoethylenically unsaturated polymerizable monomer, and allowing the monomer to be absorbed by the polymer; and (3) maintaining the monomer in the presence of a sufficient quantity of a free radical yielding catalyst and at a temperature at which the catalyst is catalytically active to effect polymerization of the monomer.  The vinyl polymer may be a vinyl chloride homopolymer or a copolymer of vinyl chloride with vinyl acetate or vinyl idene chloride.  The monomeric component added in step (2) preferably comprises an alkyl acrylate or methacrylate in which the alkyl radical contains 1 to 12 or 1 to 10 carbon atoms respectively, styrene, a halogen-substituted styrene, and a -alkyl-styrene in which the alkyl radical contains 1 to 3 carbon atoms or acrylonitrile; other suitable monomers include maleimide and N-alkyl- and N-aryl-maleimides, e.g. N-phenyl-maleimide and derivatives thereof wherein the phenyl group is substituted by halogen or a nitro or nitrile group, or an alkyl or alkoxy group containing 1 to 4 carbon atoms.  The monomeric component may also include one or more cross-linking agents, e.g. glycol dimethacrylate, divinyl benzene, vinyl methacrylate, methylene dimethacrylate, allyl methacrylate, diallyl phthalate, diallyl maleaIe, allyl acrylate, methallyl acrylate, butadiene-1,3, isoprene and 2-chlorobutadiene. The monomeric material may be added to the slurry all at once or may be added in increments during the course of polymerization; in the latter case the material added in a later increment may be wholly or partly different from that added earlier.  The catalyst employed may be an azo compound, e.g. a ,a 1-azodiisobutyronitrile, the methyl, ethyl or n-butyl ester of a ,a 1-azodiisobutyric acid, a ,a 1 - azodi - a ,g  - dimethyl valeronitrile or a ,a 1-azodicyclohexane carbonitrile, or a peroxide, e.g. benzoyl peroxide or lauroyl peroxide. Other ingredients may also be included in the polymerization mixture such as chain transfer agents, e.g. lauryl mercaptan and tert-dodecyl mercaptan; lubricants, e.g. stearyl alcohol, stearic acid, cetyl palmitate, ethyl palmitate, cetyl alcohol, magnesium stearate and calcium stearate; and heat stabilizers such as organotin compounds or barium, lead or cadmium compounds, e.g. dioctyl tin dinonyl dithio glycollate.
Patent GB-1143363-A (GB)
Title: Apparatus for controlling the operation of fluid operated jacks required to be moved in synchronism
IPC: B66F7/20
Filed: 1966-03-10
Abstract: 1,143,363. Hydraulic jacks; load lifting devices. TECALEMIT (ENG.) Ltd. 10 March, 1966 [10 March, 1965], No. 10615/66. Headings B8H and B8J. A hoisting apparatus comprises two hydraulic jacks V1, V2 whose pistons P1, P2 are fixed to the ground in a vertical position and whose cylinders C1, C2 are supplied with pressure liquid through pipes a1, a2. A load supporting platform is represented by a crossmember T attached to the cylinders C1, C2 by pin joints A1, A2. In order to cause the jacks to move together so as to keep the crossmember T horizontal each cylinder C1, C2 comprises a bleed pipe b1, b2, respectively, connected to a valve 1 fixed to the cylinder C1. The valve 1 consists of a body 6 with a bore 7 into which extend ducts 8, 9, 10, 10<SP>1</SP>. A slide member 11 extended by a rod 12 is connected by a rod 3 and pivoted lever 4 to the cross-member T. If the jack V1 rises more rapidly than the jack V2 the lever 4 is pivoted clockwise by the tilting of the cross-member T so that the slide member 11 moves to the left to connect the bleed orifice b 1  to tank through the duets 8, 10<SP>1</SP> to slow down the jack V1. On descent the system operates in the same way, the bleed orifice of the lagging jack being connected to tank to accelerate its descent. The means sensitive to the relative movement of the jacks V1, V2 may be two micro-contactors (13), (14), Fig. 3 (not shown): a mercury contactor (15), Fig.4 (not shown); photo-sensitive cells (26), (27), Fig. 5 (not shown), or an arm (28), Fig. 6 (not shown), may act directly on micro-contactors. In a platform raised by four jacks (not shown) the horizontality of the platform may be maintained by combining the jacks in pairs, each jack being provided with two synchronizing devices, one of which controls the tilt of a transverse cross member, and the other the tilt of a longitudinal cross-member.
Patent GB-216292-A (GB)
Title: Improvements in the suspension of motor and other vehicles
IPC: B60G11/36
Filed: 1923-04-19
Abstract: 216,292. Starley, W., and Fairley, J. F. April 19, 1923. Laminar and wire springs.-A compound spring for vehicles comprises a cantilever or quarter or semi-elliptic laminated or leaf spring secured to one of the relatively moving parts and one or more wire springs secured to and arranged along the laminated spring, one or both ends of each wire spring being secured to the other relatively moving part and constituting the sole connection of the laminated spring thereto. As shown, the wire spring 2 is secured to the laminated spring 4 by the straps 7 and axle clips 6, and is formed with coiled ends 12 which may be secured to the chassis 9 by a plate 10 and bolts 11, or may be extended to form a second coil 13 carried by pins 15 on plates 14 secured to the chassis, the extreme end of the wire spring being passed through an eye 16. A pair of wire springs 2 may be arranged side-by-side along the laminated spring, in which case the coiled ends may be carried between a pair of plates 14, or may be arranged one on each side of a single plate secured to the chassis.
Patent GB-1139379-A (GB)
Title: Filament-forming polyesters
IPC: C08G63/42
Filed: 1967-03-07
Abstract: 1,139,379. Poly-(glycol terephthalates). E. I. DU PONT DE NEMOURS & CO. 7 March, 1967 [11 March, 1966; 23 Nov., 1966], No. 10665/67. Heading C3R. The concentration of free carboxyl groups in a filament-forming terephthalate polyester (e.g. polyethylene terephthalate) is reduced by mixing the molten polyester with an epoxide of formula wherein R is a phenyl or n-hexyl radical in an amount of less than 3 mol. per cent calculated on the polyester repeat unit and then allowing or causing the polyester to solidify within 45 minutes of the addition of the epoxide.
Patent GB-166940-A (GB)
Title: Improvements in and relating to electric relays
IPC: H03K17/54
Filed: 1920-04-17
Abstract: 166,940. Eccles, W. H. April 17, 1920. Thermionic relays.-The opening and closing of a light contact, controlled by very small forces, affects the grid potential of a thermionic valve and gives an indication in an instrument connected in the plate or grid circuit of the valve, or in a circuit inductivelv related thereto. As shown in Figs. 1 and 2, the contact P is connected in series with a battery B, and resistance R between the grid and filament of a valve T, the grid being given a normal potential, if desired, by a battery B2 and leak resistance S. The resistances R, may be inductive. The indicator I is connected in series with the plate battery. Closure of the contact may increase or reduce the current in the plate circuit. As shown in Fig. 3, the valve has a reactive coupling between the grid and plate circuits, and closure of the contact P causes the valve to start or stop oscillating, or varies the frequency and amplitude of the oscillations, an indication being given by an instrument I connected in series with a detector D across the oscillating circuit. The indicator and detector may be associated with a secondary circuit coupled to the plate circuit. If the oscillations are of audible frequency, the indication may be given in a telephone connected directly in the circuits. Fig. 5 shows a modification in which the contact P is connected between the plate and the grid in series with a protective resistance R. Closure of the contact gives a positive potential to the grid and increases the plate current. The switch arm P may have front and back contacts, one serving to augment and the other to decrease the plate current. The circuit shown in Fig. 6 gives an indication in the telephone H by variation in the valve noises. A grid leak S shunted by a condenser K is employed with a hard valve, but is not required with a valve containing gas. The contact member may be the moving element of a galvanometer or electroscope, or it may be attached to a. diaphragm acted on by speech waves or to a telephone receiver diaphragm. It may be attached to an expanding member actuated by alteration of temperature, or to a vane in a radiometer.