baber/WOPTO huggingface dataset:
Patent GB-515201-A (GB)
Title: Improvements in and relating to dynamo electric machinery
IPC: H02K39/00
Filed: 1938-03-16
Abstract: 515,201. Dynamo-electric machines. HUGHES & SON, Ltd., H., SPROULE, D. O., and HUGHES, A. J. March 16, 1938, No. 8150. [Class 35] A generator for producing intermittent current impulses is alternately excited by a periodically interrupted direct current and demagnetized by alternating current which is substituted for the direct current when the voltages are approximately equal. In the form shown, the generator armature with a winding h is driven by a direct current motor a which has tappings on its armature connected through slip rings r, s to contacts r<1>, s<1>. The generator field winding g is connected through contacts g<2>, g<3> (which may be omitted) to contacts g'. g' by which it is excited from the direct current mains 1, 2 when contacts 11, 21 are raised by cams u, v gear driven by the motor a. Cams w, x are provided to enable contacts r', s' to drop into engagement with contacts g<1>, g<4> at instants when the A.C. voltage equals that at the motor brushes f.
Patent GB-854805-A (GB)
Title: Apparatus for inserting shaped bricks during the lining of arched underground galleries
IPC: B66F9/10
Filed: 1959-03-11
Abstract: 854,805. Tunnels. HERZBRUCH, P., and HERZBRUCH, H., [trading as HERZBRUCH UND SÍHNE, H.] March 11, 1959 [Feb. 5, 1959], No. 8330/59. Class 85. [Also in Group XXX] A masted lift truck for picking up bricks and manipulating them into position in a tunnel lining, comprises a chassis 2, mounted on endless tracks 1, and carrying a turntable 3 on which is mounted a seat 13a and a lifting mast 4 adapted to pivot about axis 5. The tines 8a, which engage in holes formed in the bricks may be expandable to grip the bricks. In a modification (not shown) the tines are replaced by clamping arms which engage the exterior side faces of the bricks.
Patent GB-1023331-A (GB)
Title: Improvements in or relating to the control of electric motor driven pumps
Inventor: MARTIN LEONARD JOHN
IPC: H02P29/00
Filed: 1962-03-05
Abstract: 1, 023, 331. Automatic control of fluid flow. BRENTFORD TRANSFORMERS LTD. and MATHER & PLATT Ltd. May 20, 1963 [March 5, 1962], No. 8343/62. Heading G3R. [Also in Division H2] To keep the pressure or rate of flow of a pump P (Fig. 1, not shown) e.g. in a borehole, constant the speed of its A. C. driving motor M is controlled by energizing a control winding D. C. b of at least one transductor in the stator supply circuit with a current dependent on said pressure or rate of flow. There may be one transductor only, speed being controlled by unbalancing the three phase supply, but alternatively there is a transductor in each phase, with series connected control windings. The desired output may be adjusted by a potentiometer SR which either supplies a second control winding D. C. a, or backs off the control current, which is supplied by an amplifier A connected to an unspecified transducer C. The transductor is auto-selfexcited by rectifiers in series with its main windings MW.
Patent GB-1111637-A (GB)
Title: Hydraulic circuit for hydrostatic steering devices
IPC: F15B17/00
Filed: 1967-02-22
Abstract: 1,111,637. Power steering arrangements. DANFOSS A.S. 22 Feb., 1967 [5 March, 1966], No. 8370/67. Heading B7H. In an hydraulic circuit including a hydrostatic steering device 6 in series with at least one control valve 8 for a further hydraulic device for the actuation of a working appliance, the steering device 6 and each valve being bypassed by respective pressure relief valves 22, 23, a non-return valve 25 is provided in the inlet line to the steering device 6, the pressure relief valve 22 by-passing both the steering device 6 and the non-return valve 25. The arrangement prevents a " knock " at the steering wheel when the valve 8 is reset to its neutral position while the steering is operative. The circuit includes a pump 2 which may be provided with a pressure relief valve 24 and the steering wheel 15 controls the device 6 which measures and directs pressure fluid to the ends of the steering servo-cylinder 12.
Patent GB-885323-A (GB)
Title: Improvements in or relating to apparatus and a method for purifying and/or endowing with an impurity a semi-conducting material
IPC: C30B13/28
Filed: 1958-03-17
Abstract: Semi-conductor material 13 is purified and/or doped in an evacuated envelope 1 having two interconnected portions 2 and 3, by causing a molten zone 16 to travel through the material 13 while maintaining portion 3 at a lower temperature <PICT:0885323/III/1> than portion 2. Portion 2 is heated by a heating element 5 in the walls of a container 4 surrounding it; portion 3 is kept at a constant temperature by a bath of liquid 7; and zone 16 is melted by a heating coil 8 movable axially of the envelope 1.  Impurities in the material 13, which may be silicon, are vapourized as the molten zone 16 is passed through the material, and are condensed in the cooler portion 3.  When doping substance is to be added to the material 13, the substance 9, which may be phosphorus, is evaporated in portion 3. The material 13 may be purified and doped simultaneously.  The crystal obtained is grown on a seed 12.
Patent GB-351005-A (GB)
Title: Device for railway vehicles for preventing rolling of the turning or bogie frames
IPC: B61F5/24
Filed: 1930-03-15
Abstract: 351,005. Buffers and undercarriages for railway vehicles. KAUFMANN, W., 50, Marktgasse, Berne, Switzerland. March 15, 1930, No. 8402. [A Specification was laid open to inspection under Sect. 91 of the Acts, March 17, 1930.] [Classes 103 (v) and 103 (vi).] In order to lessen the lateral swivelling of the bogies of railway vehicles or to prevent the swivelling movement of a bogie on one vehicle from being transmitted to the bogie of an adjacent vehicle, the two bogies and the side buffers are adapted to co-operate in such a manner that the buffer springs continuously exert a centralizing effect on the bogies. In the arrangement shown in Fig. 1, springs 8 are interposed between the for. ward and rearward portions 7, 9 of telescopic buffer rods on each side of the vehicles, each portion 9 being connected by a bell-crank lever 6, which is pivoted at 10 to the vehicle frame, to a rod 13 pivoted at 5 to the bogie 2. The springs 8 thus function both to absorb buffing shocks in the normal manner, and also as centralizing means for the bogies. If it is desired, in addition, to provide centralizing springs for the bogies when the two vehicles are not coupled together and the springs 8 therefore uncompressed, each buffer may have incorporated an additional spring 8<11>, Fig. 2, which is adapted to be compressed between a shoulder 18<11> on the buffer rod 17<11> and the buffer beam only when the vehicles are uncoupled. The Specification as open to inspection under Sect. 91 (3) (a) also describes a modification, Fig. 2 (Cancelled), in which central buffers 6<1> are employed, and known spring and linkage mechanisms 81, 111, 71, 15<1> are provided for centralizing the buffers, each buffer in addition being connected through a linkage 10<1>, 12<1> to a spring arrangement 5<1>, 9<1> associated with the bogie. In the coupled condition of the vehicles, the rigid connections between the buffers and the springs 5<1>, 91 act to centralize the bogies, while in the uncoupled condition, the buffer centralizing springs 8<1> perform this function. This subject-matter does not appear in the Specification as accepted.
Patent GB-576258-A (GB)
Title: Improvements in or relating to locknuts or securing devices
IPC: F16B39/36
Filed: 1944-05-04
Abstract: 576,258. Locking nuts. LIDDELL, C. BÀ May t, 1944, No. 8405. [Class 89 (i)] Relates to lock nuts of the type in which a slotted conical projection on one nut 12 engages a countersink in another 11 or in the work or a washer and consists in making the conical angle of the projection a few degrees less than that of the countersink. The slots preferably extend beyond the conical portion. Both the front and rear parts of the slotted portion may have annular recesses to increase the flexibility and the two nuts may be retained in an assembly by closing a lip on one nut into an annular groove on the other. The slots may be filled with grease or other moisture excluding compound. The application to a pipe union is illustrated.
Patent GB-439348-A (GB)
Title: Letter file
IPC: B42F13/00
Filed: 1935-03-18
Abstract: 439,348. Loose-leaf binders. KRAUT, E., 17, Moritzstrasse, Elberfeld, Wuppertal, Germany.-(Assignee of Kraut & Meienborn Ges. ; 17, Moritzstrasse, Elberfeld, Wuppertal, Germany) March 18, 1935, No. 8455. Convention date, March 20, 1934. [Class 146 (i)] In a letter-file having the base-plate carrying the filing-posts pivotally mounted on the back of the binder near one of the longitudinal edges, and adapted to be locked in position on the adjacent cover, the baseplate and locking means are so constructed that the base-plate is automatically released when the binder is closed. Filing-posts 4, Fig. 1, are pivoted in eyes 2 on a plate 1, which is pivoted to a plate 12 on the back 8 of the binder. The posts may be opened and closed by spring-toggle mechanism operated by a lever 7, Fig. 2. The mechanism may be locked to the rear cover 10 by a hook 15 engaging a shoulder 17 of a cut-out portion of the plate 1, or to the back 9 by hooks 19 engaging the posts 4. When the binder is opened the posts may be disengaged from the hooks 19 by sliding the plate 1 upwards and, if the latter is then swung over towards the rear cover 10, the shoulder 17 engages a slanting surface on the hook 15 and cams the plate down again until the shoulder 17 lies opposite the mouth of the hook 15. Operation of the lever 7 to open the posts slides the plate 1 upwards into locking relation with the hook 15. When the binder is closed again, and owing to the fact that the hinge 13 of the plate 1 is displaced from the hinge-line 9 of the cover and back, the plate slides on the cover 10 until the hook 15 comes into a cut-back portion 18 of the plate, and the plate is thereby unlocked. The posts 4 then engage camedges on the hooks 19 and raise the plate to position in front of the mouths of the hooks and when the file is raised to an upright position, the plate and posts fall into locking relation with the hooks 19.
Patent GB-757942-A (GB)
Title: Improvements in materials for and methods of making casting moulds, more especially for precision casting processes
IPC: B22C1/18
Filed: 1954-03-23
Abstract: Finely ground natural or synthetic slag of high silicic acid and lime content and which is dissolved in acid is used as a binder for mould coating and backing materials which have a silicic acid base.  The slags are defined.  Phosphoric acid and metallurgical slags are specified.  In a modification, the binder is a silicic acid solution combined chemically with calcium phosphate.
Patent GB-1039853-A (GB)
Title: Improvements in or relating to a reading device
IPC: G02B25/00
Filed: 1965-02-26
Abstract: 1,039,853. Magnifying lenses. H. S. KOENIG and R. HOST-SCHJERVEN. Feb. 26, 1965 [Feb. 27, 1964], No. 8515/65. Heading G2J. A rending device comprises a bar 1 having a guiding edge 4, for engaging the edge of a book or a frame containing text &c., and an aperture 3 lined with chamois leather or other soft material receiving a lenticular magnifying viewer 2. When not in use the viewer 2 may be received in a casing 6 provided on bar 1. In a modification the bar is of T section, the viewer being kept, when not in use, in the horizontal branch of the T.
Patent GB-690821-A (GB)
Title: Improvements in or relating to detergent compositions
Filed: 1950-04-05
Abstract: Salts of alkylbenzene sulphonic acids containing only one alkyl radicle of 10-16 carbon atoms, with or without one or two additional alkyl radicles containing one or two carbon atoms, are employed in detergent compositions (see Group III).  In the examples: (1) sodium alkyltoluene sulphonate is prepared by alkylating toluene with a propylene polymer fraction to give an alkyltoluene of average composition CH3.C6H4.C12H25, the alkyltoluene is sulphonated with oleum and the sulphonation product is neutralized with aqueous sodium hydroxide; (2) sodium alkylbenzene sulphonate is prepared by alkylating benzene with a propylene polymer fraction of average molecular weight 168 and then sulphonating and neutralizing as in (1), and (3) sodium alkyltoluene sulphonate is prepared from an alkyltoluene fraction of average molecular weight 268 by sulphonating and neutralizing as in (1).  The products of (1) and (3) contain sodium sulphate, but the product of (1) can be obtained almost free of sodium sulphate by extracting the sulphonation product with toluene and washing the toluene extract with water before neutralizing with sodium hydroxide.ALSO:A detergent composition, especially suitable for scouring wool, comprises 98-50 per cent by weight of a salt of an alkylbenzene sulphonic acid containing only one alkyl radicle of 10-16 carbon atoms, with or without one or two additional alkyl radicles containing one or two carbon atoms, and 2-50 per cent of a water-soluble guanidine salt.  The preferred salt of an alkylbenzene sulphonic acid is a sodium alkyltoluene sulphonate, while salts of guanidine mentioned are the nitrate, hydrochloride, sulphate, phosphate, carbonate, acetate, benzoate, phthalate, carbamate and anthranilate.  The detergent composition may also contain sodium sulphate or other inorganic salt.  In the examples, detergent compositions are described which consist of (1) sodium alkyltoluene sulphonate (containing free sodium sulphate and prepared by alkylating toluene with a propylene polymer fraction to give an alkyltoluene of average composition CH3C6H4C12H25, then sulphonating and finally neutralizing with sodium hydroxide) and guanidine carbonate or sulphate, (2) sodium alkylbenzene sulphonate (prepared by alkylating benzene with a propylene polymer fraction of average molecular weight 168, then sulphonating and finally neutralizing with sodium hydroxide) and guanidine carbonate and (3) sodium alkyltoluene sulphonate (containing free sodium sulphate and prepared by sulphonating an alkyltoluene fraction of average molecular weight 268 and then neutralizing with sodium hydroxide) and guanidine carbonate, hydrochloride, nitrate, phosphate or sulphate. Detergency tests are described in which wool fabric is scoured with aqueous solutions of the detergent compositions of the examples.
Patent GB-276905-A (GB)
Title: Improvements in or relating to railway sleepers
IPC: E01B3/36
Filed: 1927-03-29
Abstract: 276,905. L÷ssI, C. March 29, 1927. Tie-bars; sleepers, pot; sound and vibration, preventing.-Chair plates u are secured to reinforced-concrete pot sleepers by bolts Sr which are anchored to the tie-rod Sp so that their axial pull is transmitted directly to the rod. The bolts have rectangular ends slotted to engage recesses on the tie-rods which engage pressure plates FL. The sleeper ledge W is reinforced with steel. Compressed-paper plates H1 - - H3 are used.
Patent GB-819799-A (GB)
Title: Brassiere clasp
IPC: A41F1/00
Filed: 1955-10-27
Abstract: 819,799. Hook and eye fastenings. COUSINS, S. Oct. 27, 1955 [Nov. 26, 1954], No. 8645/59. Divided out of 819,798. Classes 43 and 141 [Also in Group XXV] The subject-matter of this Specification is identical with that of Specification 819,798 but the claims are concerned with the combination of a clasp for a front opening brassiere with reinforcing elements.
Patent GB-223500-A (GB)
Title: Improved otterboard for trawl nets and other similar purposes
IPC: A01K73/045
Filed: 1924-04-05
Abstract: 223,500. Boer, R. de, and Voogt, H. W. de. April 5, 1924. Trawling-gear.-An otter-board is formed as a flat, preferably oblong, box, the horizontal crosssection of which, as shown in Fig. 2, shows a flat inner wall 1 and a convex outer wall 2, or both walls may be convex. A keel semicircular in vertical cross-section may be provided and lined with hard rubber or the like.
Patent GB-1493932-A (GB)
Title: Electromagnetic lifting device
IPC: B66C1/06
Filed: 1975-02-26
Abstract: 1493932 Magnetic lifting devices BRITISH STEEL CORP 26 Feb 1975 [26 Feb 1974] 8674/74 Heading H1P A magnetic lifting device for ferromagnetic loads comprises a magnetizable casting 10 within which an energizing coil 14 is located having an extended hollow conical hardened ferromagnetic polepiece 16 detachably secured by stud 20 to a tapped bore in the central pole of the casting, which improves the lifting capacity for loose ferromagnetic materials. The polepiece may alternatively have a cylindrical or rectangular profile, and may be solid. Alternatively (Fig. 3, not shown) a solid polepiece may be secured to a conventional circular lifting electromagnet by a stud traversing a bushed bore of the casting and secured by a top nut and washer.
Patent GB-127390-A (GB)
Title: Improvements in Life-preservers or Life-Saving Devices.
Inventor: LEAN CLEMENT
IPC: B63C9/115
Filed: 1918-05-27
Abstract: 127,390. Lean, C., (Wood, E. W.). May 27, 1918. Body attachments, buoyant.-Buoyant life-saving appliances are made of rubber sponge having integral therewith a waterproof protective coating, such as a film, or layer of rubber. This film may itself be treated or coated with a protective or impregnating material, such as gilsonite. The sponges may be made in the form of a cube, parallelopiped, &c., or as flat sheets, and may be enclosed in a textile covering and provided with attachment means. Fig. 2 shows a life-preserver comprising front and back plates, each consisting of six of the coated rubber sponges encased within textile material 8, and provided with shoulder straps 6 and side straps 7. Fig. 3 shows another form made of a single rubber sponge 15 with its protective rubber layer 14 and gilsonite coating 16. The sponges may also be made in the form of an endless belt, which may be either circular or rectangular in radial cross-section.
Patent GB-738652-A (GB)
Title: Process for the hydrogenation of carbon monoxide
Filed: 1952-04-07
Abstract: Products rich in oxygen-containing organic compounds are made by passing a carbon monoxide-rich synthesis gas containing less than 1-2 volumes of hydrogen per volume of carbon monoxide under synthesis conditions of temperature and pressure, over an alkalized, precipitated iron catalyst containing an alkali which, calculated as K2O, is present to the extent of more than 5 parts per 100 parts of iron, the catalyst being provided as a fixed bed or as a suspension in a liquid medium.  The oxygen-containing products are mainly alcohols with some esters principally acetates and propionates, which may be saponified. Methane and other hydrocarbons may also be formed. In an example a catalyst is precipitated from the corresponding metal nitrates with sodium carbonate and after drying, moulding and reducing at 310 DEG  C. with a mixture of hydrogen and nitrogen is used in a synthesis to yield oxygen-containing organic compounds especially high molecular weight esters which are saponified.
Patent GB-1156850-A (GB)
Title: Electrical Discharge Machining Apparatus.
IPC: B23H1/02
Filed: 1967-02-24
Abstract: 1,156,850. Electro erosion. ELOX CORP. 24 Feb., 1967 [4 March, 1966], No. 9045/67. Heading B3V. [Also in Division H3] An electro-erosion apparatus comprises a power source 132, Fig. 1, connected across the gap between an electrode 130 and workpiece 128 through an electronic switch 110 whose control electrode is triggered by a first pulser 10, 12 providing variable on and off time pulses, a sensing means 150, 152, Fig. 2, providing a signal output responsive to abnormal conditions, such as a short-circuit, across the gap, cut-off means 160 connected to the sensing means to interrupt operation of the switch 110 when abnormal conditions occur, a second pulser 190, 192, 194, 196, supplying cut-off pulses to the cut-off means 160, and means 202 for varying the duration of the cut-off pulses. The first pulser is an astable multivibrator formed by tubes 10, 12. The pulse frequency is varied by switched condensers 34, 36 and the on-off ratio may be adjusted by rheostat 46 between eighty and one per cent. The output from the multivibrator is passed through amplifiers 56, 68, 76, which may comprise banks of tubes to a transformer 92, whose secondary winding controls the bases of a bank of power transistors 110 forming the electronic switch. The latter may alternatively comprise vacuum tubes, ignitrons, thyratrons, or semi-conductor controlled rectifiers. If an abnormal condition, such as a short-circuit, occurs in the gap, the sensing means 150, 152, Fig. 2, responsive to peak gap voltage, transmits a signal through diodes 182, 184 to base of transistor 160 to render it conductive. The collector of this transistor is connected to the control grid of multivibrator tube 10 whereby a negative voltage occurs on this grid and stops the multivibrator. During this stop period, however, low frequency pulses of 50-60 c.p.s. are applied to the switch 110 under the control of the second pulser comprising a relaxation oscillator formed by a four-layer diode 190 and network 192, 194, 196 supplied from transformer 186. These low frequency pulses are applied through diode 212 to base of transistor 160 to render it non- conductive, thus periodically reactivating the multivibrator which automatically begins normal operation when normal conditions are restored in the gap. The low frequency pulses are varied in their on-off period by a potentiometer 202 which is preferably operated in unison with the rheostat 46. A dielectric such as kerosene, transformer oil or distilled water is circulated through the gap and the latter is controlled by a servo feed unit for the electrode 130.
Patent GB-158167-A (GB)
Title: Improvements in and connected with frames for pictures, calendars, mirrors and the like
IPC: A47G1/14
Filed: 1920-03-30
Abstract: 158,167. Murdoch, H. S. March 30, 1920. No Patent granted (Sealing fee not paid). Card and like stands.-In photograph and like frames, the picture, glass and backboard are held in place against the front opening by a springy wire such as B, Figs. 1 and 3, which is bent from its natural position nearly into a circle and then slipped under a flange A. Eyes 8, 9 formed at the ends of the wire spring take a wire strut C. The strut may be permanently attached as shown in Fig. 6. The wire spring may be made in oblong or any other shape to suit different frames. The strut may be of sheet metal. The invention is particularly applicable to silver or other metal frames of small size for photographs, calendars, or mirrors.
Patent GB-160805-A (GB)
Title: Improvements in and relating to processes of retreading rubber tires and product thereof
IPC: B29D30/54
Filed: 1921-03-29
Abstract: 160,805. Nestler, E. March 29, 1920, [Convention date]. Devulcanizing waste rubber; junction rubber.- The treads of worn tyres are exposed to a flame to desulphurize the rubber and render it sticky, a cement of rubber in carbon tetrachloride containing a small amount of sulphur is spread over the surface, and when this is dry, a new tread is applied which may consist of new rubber or pieces of old treads. The whole tyre is then vulcanized as usual.
Patent GB-1531395-A (GB)
Title: Process for producing electrophotographic materials
IPC: G03G5/05
Filed: 1977-03-04
Abstract: 1531395 Acenaphthylene copolymers and complexes thereof MITSUBISHI CHEMICAL INDUSTRIES Ltd 4 March 1977 9316/77 Heading C3P [Also in Division G2] Acenaphthylene copolymers with methyl or ethyl acrylate or with methyl methacrylate are prepared by adding the monomers in benzene solution to water to form an aqueous emulsion and polymerization is carried out by adding potassium persulphate. The copolymers which contain less than 20 per cent acrylate are used in electrophotographic materials in the form of charge transfer complexes (see Division G2).