baber/WOPTO huggingface dataset:
Patent GB-768871-A (GB)
Title: Improvements in motor driven pumps
Inventor: WHITE HOWARD THEODORE
IPC: H02K5/128
Filed: 1955-02-21
Abstract: 768,871. Centrifugal pumps. CHEMPUMP CORPORATION. Feb. 21, 1955, No. 5161/55. Class 110 (1). A motor-driven pump comprises a housing 12 extending between spaced end plates 10, 11, a pump housing 63 mounted on the plate 11, a cylindrical sleeve 25 axially extending between the plates 10, 11 within the housing 12 to provide separate chambers for the motor rota 80 and the motor stator 29, and closure plates 30, 50 carried by the plates 10, 11 and extending into the sleeve 25. Packing rings 35, 55 are provided. Shaft bearings 40 of graphite or tetrafluoroethylene are carried by the plates 30, 50. The motor rotor 80 may be protected from the pumped liquid by a cylindrical cover 83 and end covers 84 and, preferably, by flanges 81 which extend into recesses in the plates 30, 50. The radial faces 82 of the flanges 81 may each bear against a thrust ring 76 which is interposed between the end face of the adjacent bearing 40 and a shoulder 75 on the driving shaft. The sleeve 25 and the cover 83, 84 may be of stainless steel. The flanges 81 have close clearances with the adjacent bearing-supporting flanges 36, 57 to form flame traps. A small quantity of pumped liquid may be passed through a pipe 45 to cool and lubricate the right-hand bearing 40, and thence around the adjacent flange 81, along the outside of the rotor 80, and around the other flange 81 to cool and lubricate the other bearing 40, returning through a bore 56 to the pump impeller 71. If the pumped liquid contains abrasive material, a valve 47 can be turned to cut off the supply from the pump and admit instead a supply of abrasive-free liquid from a pipe 46.
Patent GB-285586-A (GB)
Title: Improvements in or relating to valves for internal-combustion engines
IPC: F01L7/02
Filed: 1926-11-23
Abstract: 285,586. Sitwell, S. S. H. Nov. 23, 1926. Channels in valves.-For lubricating a rotary engine valve 16 fitted with longitudinal packing- strips 27 and packing-rings 30, oil is supplied by pipes 32 to ducts 132 which extend from the ends of the valve, beneath the packing-rings 30, to the hollows 31 formed between the packing- strips 27. Oil is also supplied by a central pipe 33. Oil-collecting grooves 35 are arranged as shown, and surplus collecting in the chamber 34 is conducted by a pipe to a casing 25 and thence to the sump.
Patent GB-179680-A (GB)
Title: Improvements in holders or feeders for salt bricks
IPC: A01K5/015
Filed: 1921-02-16
Abstract: 179,680. Crompton, E. Feb. 16, 1921. Salt, supplying to animals. -A holder for salt bricks for animals has its sides c and base d converging toward the front, and is formed with beaded or rounded edges e to prevent injury to the animals. A hinged or sliding cover f may be provided to protect the salt from rain &c. Holes g, set apart at a distance slightly greater than the thickness of a brick, are provided for suspending the holder by means of nails or screws.
Patent GB-545569-A (GB)
Title: Improvements in and relating to the production of steel
Filed: 1941-05-09
Abstract: 545,569. Alloys. MOND NICKEL CO. May 9, 1941, No. 5273/42. Convention date, May 18, 1940. Divided out of 545,139. [Class 82 (i)] Steels, which may contain alloying elements such as nickel, chromium, manganese, silicon, molybdenum, vanadium, and copper, are improved by deoxidizing a sulphur-containing melt with aluminium and then treating it with 0.05-0.6 per cent. of selenium or tellurium or both, with or without the addition of up to a total of 0.6 per cent. of one or more alkaline earth metals. If calcium &c. is used the minimum selenium or tellurium may be reduced to 0.01 per cent. Calcium may be used as silicide, and selenium and tellurium as the elements or as alloys with for example iron or nickel, and the materials may be added in the form of a compacted powder mixture containing also a metal powder and a flux as described in Specification 545,139. The Specification as open to inspection under Sect. 91, describes also the subject-matter of Specification 545,139. This subject-matter does not appear in the Specification as accepted.
Patent GB-1492861-A (GB)
Title: Field excitation system for a dynamo-electric machine utilizing a rotating transformer/brushless exciter generating combination
IPC: H02P1/46
Filed: 1975-02-07
Abstract: 1492861 Exciting dynamo electric machines; starting prime movers GENERAL ELECTRIC CO 7 Feb 1975 [7 Feb 1974] 5299/75 Heading H2A and H2H An excitation system for a dynamo-electric machine (D.E.M) comprises an exciter mounted on the same shaft as the D.E.M, the exciter having its stationary field windings selectively connected in a polyphase connection or a series connection and correspondingly energized by a polyphase A.C. signal or a D.C. signal, the exciter armature output being rectified to energize the rotary field winding of the D.E.M. According to the connection and supply, the exciter, and D.E.M. act as rotating transformer and D.C. brushless motor respectively or both as synchronous generators. The arrangement is used to drive an aircraft jet engine up to starting speed and thereafter as an A.C. power supply. Initially, with the common rotor shaft 15 (Fig. 1) stationary, switch 23 connects the exciter field windings in a star-connection and applies a three-phase A.C. input thereto, causing a rotating flux field to induce A.C. in the exciter armature winding. The output thereof is rectified at 19 to supply field excitation for the machine 14 which operates as a D.C. brushless motor, the stator winding being supplied with current depending on the rotor position. Thus, the shaft 15 rotates and accelerates up to the ignition speed of a jet engine mounted on the shaft 15. At this speed, the sensor 31 opens switch 24, closes switch 25 and operates switch 23 to reconnect the exciter field windings 20, 21, 22 in series. A permanent magnet generator 26 with its rotor 27 also mounted on the shaft 15 provides an A.C. signal which is rectified at 29 to provide D.C. excitation for the exciter field and the exciter field now operates as a synchronous generator. The D.E.M. 14 now also operates as a synchronous generator, the jet engine acting as prime mover. Fig. 3 shows the reconnection of the windings 20-22 and the input switches 24, 25. At start up, switch 60 is momentarily closed setting bistable 58 such that its Q output provides a positive gate voltage to thyristor pairs Q 1 -Q 2 , Q 3 -Q 4 , Q 5 -Q 6 . These interconnect the 3 phase supply terminals 42 and the windings 20-22. Bistable 58 also supplies a gate voltage to thyristors Q 7 -Q 8 , which ensures a star-connection of the windings since thyristors Q9, Q 10  are blocked. As the shaft speed reaches the predetermined ignition speed, control 63 produces a pulse which resets bistable 58, blocking thyristors Q 1 -Q 8  and setting bistable 59 thereby enabling Q 9 , Q 10 . This provides disconnection of the A.C. supply, and reconnection of the windings 20-22 in series between the D.C. supply terminal 64 and ground 55.
Patent GB-1116609-A (GB)
Title: Binary coded mosaic apparatus
Inventor: MASON FREDERICK PERCIVAL
IPC: H04N3/12
Filed: 1967-02-03
Abstract: 1,116,609. Printing control circuits. CREED & CO. Ltd. 3 Feb., 1967, No. 5313/67. Heading G4H. Bi-stable circuits in a store MS are set in accordance with the points in a 5 x 5 matrix required to record a desired character on a magnetic tape or drum T. and a mark W co-operates with sensing means A-E to read out the columns of matrix points in turn to a column of recording elements R.H. The medium T may subsequently be processed by dusting it with magnetic powder to render the recorded character visible. Instead of a single mark W and five sensing means A-E, various combinations of marks and sensing means feeding decoding circuits may be used to provide the column gating signals. The sensing means may be photo-electric or magnetic.
Patent GB-346905-A (GB)
Title: Improvements relating to speed regulating mechanism for gramophone motors
IPC: G11B17/02
Filed: 1930-02-17
Abstract: 346,905. Gramophones. COLLARO, C., 111, Sutherland Avenue, Maida Vale, and COLLARO, Ltd., Culmore Road, Peckham, both in London. Feb. 17, 1930, No. 5334. [Class 40 (ii).] Speed-regulating.-A gramophone speed-regulating mechanism comprises an operating handle mounted to rotate about the axis of the turntable spindle and frictionally engaging with a camshaped member controlling the motor governor. Adjustment of the device can be effected by holding the cam-shaped member stationary and moving the operating handle relatively thereto. An operating handle 1 carries a pointer 3 and is formed with a ring 2 clamped to a ring 4 which has a cam edge 5. The rings 2, 4, with friction material 8 between them, are held together by a sleeve 6 which fits within an opening in a plate 10 screwed to the motor board. The cam 5 travels over the elbow 14 of a bent lever 15 pivoted to the plate 10 and bearing at the other end against the brake lever 17 of the motor governor. When the pointer 3 is moved over the scale 25 the rings 2, 4 rotate together to operate the brake lever 17 until a projection 11 upon the ring 4 makes contact with one of two stops 12, 13 on the plate 10. When such contact occurs the ring 4 remains stationary but continued movement of the handle 1 is possible against the frictional force between the rings 2, 4 so that an adjustment of the speed calibration of the mechanism may be effected.
Patent GB-405468-A (GB)
Title: Prepayment radio receiving apparatus
IPC: G07F17/28
Filed: 1933-02-21
Abstract: 405,468. Coin - freed radio - receiving apparatus. BARBEZAT, F. WEYENETH-, 42, Madretschstrasse, Madretsch, Biel, Switzerland. Feb. 21, 1933, No. 5337. Convention date, Feb. 23, 1932. [Class 27.] In prepayment radio-receiving apparatus, an inserted coin causes the energization of an electromagnet which closes a switch controlling the supply of electricity to the radio apparatus and also to an electric motor that opens the switch at the end of a predetermined period. A coin inserted in the slot 4, Fig. 1, falls between the contacts 5 and momentarily closes the circuit of an electromagnet 3, the armature 2 of which is pulled into a horizontal position about a spindle 12 on which it is pivoted, and is then restored by the spring 11 and imparts a partial rotation to the ratchet wheel 7 by means of the pawl 9. The wheel 7 is free to rotate on the spindle 12 and is connected to a bevel wheel 13, Fig. 3, which meshes with a planet wheel 14 carried by an arm 30 secured to the spindle 12. When the wheels 7, 13 are rotated, the wheel 14 is caused to ride over a second bevel wheel 15 and thereby imparts rotation to the spindle 12 and a gear wheel 17 secured thereto. The wheel 17 meshes with a pinion 18 coupled with a disc 19, rotation of which causes the pivoted arm 22 of a switch 20 to ride out of a depression 39 therein (Fig. 4), thereby closing the switch and putting the radio set into operation. As the arm 22 rides out of the depression 39 it presses against the nose 46 of a pivoted member 38 connected by a spring 44 to the disc 19, and when the arm 22 passes on to the smooth part of the disc it is freed from the member 38, which is brought back into abutment with a stop 45 by the spring 44. Connected in parallel with the radio set and controlled also by the switch 20 is a Ferraris or like motor 21 which is geared to a wheel 16 connected to the bevel wheel 15, which, as the motor runs, imparts a reverse motion to the planet wheel 14 and thereby to the disc 19, so that after a predetermined time, say one hour, the arm 22 falls over the edge of the member 38 and switches off the set. The total time available may be split up into periods as desired by the provision of a hand switch which disconnects the set and simultaneously the motor, so that the motion of the disc 19 is arrested. Several coins may be inserted in succession, each producing a separate actuation of the magnet 3 and an additive rotation of the disc 19, so that the available time is correspondingly lengthened.
Patent GB-1465525-A (GB)
Title: Headed screw
IPC: F16B23/00
Filed: 1974-02-06
Abstract: 1465525 Headed screw NORDISKE KABEL OG TRAADFABRIKER AS 6 Feb 1974 [7 Feb 1973 16 Jan 1974] 05408/74 Heading F2H A headed screw adapted to be driven by means of a twist drill has a recess 4 in its head for receiving the twist drill, and projections 5 for engaging the clearing grooves of the drill. The surfaces of projections 5 which abut the drill during driving of the screw may be inclined such that the drill rides out of the recess when the screw is fully driven. The screw may be a wood screw, a machine screw or a self tapping screw, and the drill required for driving may be that used for drilling a pilot hole or a hole for a plug or socket. The head recess may be filled with putty after insertion of the screw to indicate tampering.
Patent GB-306417-A (GB)
Title: Improvements in or relating to chokes and other electro-magnetic devices
IPC: H02M1/14
Filed: 1929-02-18
Abstract: 306,417. Telefunken Ges. fiir Drahtlose Telegraphie. Feb. 16, 1928, [Convention date]. Electromagnets.-In electromagnetic devices, such as choking coils and telephone magnets, carrying a working current which comprises a direct current with superposed alternating current, the cores and the number of turns are so chosen that the core, after strong initial magnetization, is magnetized by the direct current component to a point on the sides 2, 3, Fig. 1, of its hysteresis curve at which the curve is steeper than in the initial magnetization curve 1. The core may work at the points a, c where it is demagnetized by the direct current component. The effective inductance is thus increased and may be further increased by using iron of great hysteresis loss so that the points a, c are at a greater distance from the origin. Direct current may be superposed on the working current to magnetize the core to the point a.. In a filter circuit C, D, Fig. 2, between a rectifier G and a thermionic valve R supplied from the rectifier, the core of the choke D normally works at the point a, Fig. 1. A switch S, when moved to the position indicated by dotted lines reverses the choke and short-circuits the valve R to magnetize the core strongly in the opposite direction so that the point a is accurately determined by occasional operation of the switch S. The choking coil may also be used in the anode circuit of an amplifying valve. In a telephone magnet D, Fig. 4, a battery B<1> normally keeps the core at the point a, a switch S being arranged in association with two batteries B<1>, B<2> to magnetize periodically the core to the point b. The switch S may be connected to the suspension hook of the receiver so that, each time the receiver is taken down, the core is magnetized to the point b for a short time and then to the point a.
Patent GB-1101280-A (GB)
Title: Reinforced containers and method of making
IPC: B29C53/60
Filed: 1965-02-08
Abstract: 1,101,280. Coated container. GOODYEAR TIRE & RUBBER CO. 8 Feb., 1965 [21 Feb., 1964], No. 5453/65. Heading B2K. [Also in Divisions B7, B8 and D1] A container is made by: (1) applying at least one coat of a liquid polyurethane reaction mixture to a mandrel to which the cured polyurethane will not adhere, (2) wrapping the coated mandrel with a continuous fibrous material, (3) applying at least one further coat of liquid polyurethane reaction mixture over the resulting reinforcement; and (4) allowing the liquid reaction mixture to react and cure and removing the cured product from the mandrel. The liquid polyurethane reaction mixture may comprise a polyester polyol, polyether polyol, or polyesteramide, an organic di-isocyanate, a cross-linker and optionally a solvent. In an example, it also contains carbon black. The cross-linker may be a glycol, a primary diamine, an ammo-alcohol or water. When water is used, the product may be porous. The fibrous reinforcement may comprise monofilaments of nylon, glass or metal, or a spun yarn or ribbon. As shown, an inflatable mandrel 4 is mounted on a rotatable shaft 3. It is coated first with a layer of polyethylene or other waxy material to prevent adhesion of the product to the mandrel, and then with the liquid reaction mixture. Filaments, e.g. of nylon, are attached at 5 and the mandrel is rotated. The filaments are drawn from spools 8 through guides on a carriage 9 that moves back and forth along the track 10, so that the filaments are wound around the mandrel helically or circumferentially or in a combination of helical and circumferential wraps. The filaments may be coated with reaction mixture by passing them through a dip bath 22 (Fig. 2, not shown). When the wrapping is complete, a final coat of reaction mixture is sprayed on. The mandrel can be moved off the shaft by removing the support 28, and the container is then allowed to cure at ordinary or elevated temperature. When the cure is complete, the mandrel is collapsed by applying vacuum to it and is withdrawn from the container. The method of winding may give a built-up bead at each end of the container. If the mandrel has one coated free end, the fibrous material may be wound to wrap around that end.
Patent GB-492019-A (GB)
Title: Improvements in and relating to electrical fuses
IPC: H01H85/36
Filed: 1938-02-22
Abstract: 492,019. Fusible cut-outs. TAPLIN, H. E. Feb. 22, 1938, No. 5534. [Class 38 (i)] A plurality of cartridge fuses are so constructed and interconnected in a bank or series, that each successive fuse is automatically placed in the main electrical circuit when the fuse element of the immediately preceding fuse is blown. The invention is specially adapted for use in fuses of the type employing an arcextinguishing liquid. Two glass tubes 6 are connected by a contact-making ferrule 9, and the ends are covered by ferrules 7 and 8, electrically connected by metal rods 13 and 26, Fig. 2, secured to an emergency contact element 14, and a tubular element 26b which telescopically engages the rod 26. A washer 11 of insulating material prevents direct electrical contact between the rod 13 and the ferrule 7. A helical spring 28, connecting the element 14 and the ferrule 8, tends to move the element 14 so that the contact springs 15 thereon engage the sides of a restricted opening 24 in the ferrule 9, but is prevented from doing so by a comparatively stout suspension wire 18 secured at its ends to the ferrule 7 by clamping screws 20, and passing through a hole in the rod 13. A fuse wire 19 is secured to the rod 13 by a clamping screw 16 and to the ferrule 7 by clamping screws 20. When the current fuses both wires 18 and 19, the rod 13 is released, the electrical connection between the ferrules 7 and 8 is broken and when the emergency contact 14 reaches the opening 24 the ferrules 8 and 9 are electrically connected. A tube 22 of insulating- material is secured at its upper end to the contact 14 and encloses the rod 26 and part of the spring 28, to prevent any arcing or direct flow of current to the ferrule 9. An enlarged portion 23, of the insulating tube is of such a diameter as to pass slidably through the restricted opening 24, and serves to reduce the speed of the tube 22 and the contact 14 as the contact approaches the ferrule 9. The fuse may contain an arc-extinguishing liquid 33, and in this case, a liquid directing sleeve 13a may be provided. In one arrangement, Fig. 4. the fuse is mounted on a standard insulated fuse base, the ferrules being engaged by pairs of spring contacts 32, and a subsidiary fuse construction 34 of any well-known type is similarly engaged by contact springs 35. When the main fuse is blown, the connection of ferrules 8 and 9 completes the circuit through the subsidiary fuse 34 one end of which is electrically connected to the ferrule 9.
Patent GB-364912-A (GB)
Title: Improvements relating to draught poles or shafts of agricultural machines
IPC: A01D75/24
Filed: 1931-02-23
Abstract: 364,912. Draught poles. BAMFORD, J., St. Mary's Mount, and BAMFORD, C. J., The Parks, both in Uttoxeter, Staffordshire. Feb. 23, 1931, No. 5554. [Class 108 (ii).] A draught pole 1 connected to a mounting or bracket 2 on a vehicle or agricultural implement is provided with a strengthening member 5 of channel section secured by bolts 4 on the opposite side of the pole to the bracket 2 and extending further along the pole than the bracket.
Patent GB-1170687-A (GB)
Title: A Catalyst and use thereof for the Polymerization of Epoxides
IPC: C08G65/12
Filed: 1967-02-06
Abstract: 1,170,687. Polymerisation catalyst MARUZEN PETROCHEMICAL CO., Ltd. and TOYO RUBBER INDUSTRY CO. Ltd. 6 Feb., 1967 [10 Feb., 1966; 27 Jan., 1967], No. 5620/67. Heading B1E. [Also in Division C3] A polymerisation catalyst for epoxides comprises the reaction product of dialkyl zincs or organo aluminium compounds with a nitrocompound containing a nitro group adjacent to a carbon with an active hydrogen. The catalyst is prepared in an inert diluent at -78C to room temperature and may be subjected to an ageing treatment before use.
Patent GB-806426-A (GB)
Title: Improvements in or relating to the hardening of steel objects
IPC: C21D7/04
Filed: 1957-02-19
Abstract: 806,426. Altering physical structure. DU PONT DE NEMOURS & CO., E.I. Feb. 19, 1957 [July 11, 1956], No. 5663/57. Class 83 (4). [Also in Group XXI] A method of hardening the inner surface of an austenitic manganese steel hollow body 1 comprises positioning a layer of a detonating explosive composition 2 on the outer surface of the body inserting a mandrel 3 of a deformation - resistant material inside said body, so dimensioned that there is a reasonably close fit between it and the body, and initiating said explosive charge. The explosive layer 2 may be applied as a preformed sleeve, may be coated on the body in a paste or slurry, may be wrapped around the body in the form of ribbon, sheet or tape or may consist of a packaged loose explosive composition. The mandrel may be of hardened tool steel, soft iron, copper, aluminium, temperered glass or ceramics. The charge is exploded by an electric initiator 4. U.S.A. Specification 2,703,297 is referred to.
Patent GB-815523-A (GB)
Title: Constructional sheet material and a machine for producing the same
IPC: D06J1/06
Filed: 1955-06-07
Abstract: 815,523. Corrugating. GEWISS, L. V. June 7, 1955 [June 10, 1954; July 30, 1954], No. 5663/59. Divided out of 815,522. Class 83 (4). Sheet metal is provided with sharp corrugations of zig-zag or sinuous form by passing it step by step between transverse rows of dies 3, 4 carried by plates 1, 2 separable by cams 14, 141. The face of each die 3, 4 is in the form of four parallelograms, the inclinations of which increase towards the left, Fig. 9, and the various rows of dies are mounted so as to permit a slight separation thereof under control of a pivoted member 31 coupled thereto through links 33, 32. The material is advanced by two pairs of jaws 7, 8 and 5, 6. The jaws 7, 8 are advanced and retracted by a lever 43 and are opened and closed by a cam 40. The jaws 5, 6 are advanced and retracted by a lever 34 and opened and closed by cam surfaces 22, 23, and operate the pivoted member 31 by links 29, 30. A stop bar 9 holds the folded material during movement of the jaws 5-8.
Patent GB-767796-A (GB)
Title: Selenium rectifier
IPC: H01L21/108
Filed: 1955-02-25
Abstract: A lacquer comprises 0.1 to 1 part of polymonochlorotrifluoroethylene and 0.1 to 1 part of an organic amine dispersed in a hydrocarbon solvent such as toluene or xylene.  The amine may be N-methyldiethanolamine, diethanolamine, triethanolamine, paraphenylenediamine, diisopropylamine, diethylethanolamine, isopropylamine, dimethylethanolamine, monoethanolamine, aminoethylethanolamine, diethylenetriamine, monoisopropanolamine, tetraethylenepentamine, ethylenediamine, triethylenetetramine, propylenediamine, triethylamine, N-aminopropylmorpholine, N-acetylethanolamine, diisopropanolamine, N-hydroxyethylmorpholine, triisopropanoltriamine, tri-n-amylamine, or diethylamine.  The amine is preferably added to the dispersion in solution or dispersion in nitromethane or a mixture of nitromethane and methyl alcohol.  A small amount of acetaldehyde may also be present.