baber/WOPTO huggingface dataset:
Patent GB-520102-A (GB)
Title: Improvements in synchronous dynamo electric machines
IPC: H02K19/12
Filed: 1938-10-26
Abstract: 520,102. Synchronous motors. BRITISH THOMSON-HOUSTON CO., Ltd. Oct. 26, 1938, No. 30978. Convention date, Oct. 28, 1937. [Class 35] A synchronous motor wherein the polyphase primary windings are connected to the source in sequence has each section of the series connected field windings permanently shunted by an impedance. In the form shown, one only of the sets of primary windings 2, 3 is energized for starting and the other is switched in at a predetermined speed and a resistor 20 or a condenser is connected across each of the series connected field windings 8. The windings 8 are connected to a discharge resistance 15 during starting and subsequently to an excitation source 16.
Patent GB-248296-A (GB)
Title: Improvements in adjusters and feeding mechanisms for automatically operating drilling machines for thread reels
IPC: B23Q7/10
Filed: 1924-11-26
Abstract: 248,296. Cronstr÷m, H. Nov. 26, 1924. Blanks, transferring.-In a mechanism for feeding roughly turned blanks to the chuck of an automatic drilling-machine, particularly a combined drilling and turning machine such as is described in Specification 248,068, the blanks are first arranged in a continuous descending column in a vertical tube and are picked up successively from the bottom of the tube by a device which transfers them to a horizontal clamping chuck and which automatically rejects any blanks which are cut either obliquely or too short. The blanks are shovelled into a container the floor of which is provided with a hopper 2 into which projects a driven roller 5 of double conical grooved form. The roller is provided with cam surfaces 6 which agitate the blanks and cause them to be fed in a continuous column with their axis vertical through a tube 4 whence the blanks drop successively on to a. platform 19 and are gripped by jaws 14 carried on a swinging sector 13 resiliently mounted on a hub 22. The sector, carrying a blank, is oscillated through 90‹ by means of a lever 23 the slot 24 of which is engaged by a pin connected with the drill reciprocating mechanism. Ejection of the blank during this movement is prevented by a guide 28. If a cylinder which is too short or which is cut obliquely is received on the platform 19 the rotation of the sector 13 cannot take place but a resilient con nection allows the movement of the platform 19 and the defective blank being thus unsupported falls out of the claws and is rejected undrilled. At the end of the travel of the sector the axis of the blank is horizontal. The claws are then opened by resilient pads 31 and the blank thus released is pushed into the drilling chuck.
Patent GB-244471-A (GB)
Title: Improvements in or relating to sleeve valves for engines, pumps, or compressors
IPC: F01L7/04
Filed: 1925-12-09
Abstract: 244,471. Lemasson, R. P. F., and Martin, E. H. Dec. 10, 1924, [Convention date]. Valves, arrangement of.-A rotary sleeve valve 1 for internal-combustion engines or pumps is given a slight axial reciprocation of variable amplitude by means of an eccentric 14 connected to a rocking arm 16 which carries a laminated spring 16 engaging a groove 17 in the valve, the resilience of the spring resulting in a variable movement of the valve according to the speed. The reciprocating motion is not used for opening or closing the valve ports, but serves for grinding the surface of the valve and to ensure, fluidtight action of packing rings 10 and segment's 11 provided on the cylinder head 3, the segments 11 being pressed outwards by plate springs. The valve is rotated by a worm 6 on the same shaft as the eccentric 14 and driving a worm wheel 7 which engages the valve by means of a tongue 8 and groove 9. Ports 4 in the valve co-operate with inlet and exhaust ports a<1>, a<2> and e<1>, e<2>.
Patent GB-645608-A (GB)
Title: Improvements in or relating to fans
IPC: F04D29/58
Filed: 1948-12-02
Abstract: 645,608. Centrifugal fans. SHEPHERD, G. R. (Westinghouse Electric International Co.). Dec. 2, 1948, No. 31238. [Class 110(i)] A fan comprises a hollow shaft 8 and a hollow hub 12, attached together so that their bores, which are of substantially the same diameter, extend in axial alignment, and a cooling water supply tube 16 extending through the shaft and into the hub, whereby cooling water supplied through the tube into the hub is returned around the tube in contact with the inner surface of the hub. The water is discharged through a pipe 20, and either runs to waste or is recooled. The bearing 7 is also watercooled.
Patent GB-842622-A (GB)
Title: An electrical synchronous control system
IPC: H02P5/49
Filed: 1956-10-15
Abstract: 842,622. Control of A.C. motors. SCHMID, W. K. Oct. 15, 1956 [Oct. 18, 1955], No. 31336/56. Class 38 (3). [Also in Groups XXII, XXXV and XXXVIII] A secondary member is driven before a primary control member when the two members touch to complete a control circuit. When the members are driven apart the load carried by the secondary member returns the members into contact. The controlled member is coupled to a continuously rotating magnetic field by short-circuiting a rotor winding in the control circuit. A lathe may incorporate the arrangement in a motor speed governor and in a tracing device. Hoist control.-In Fig. 1, a shaft 3 drives gearing 4 to hoist a load 6. A continuously rotating A.C. rotor 1 drives the D.C. excited polepieces of a coupler 2, the motor of which is mounted on the shaft 3. The shaft is driven when the rotor winding is short circuited at contacts 17, 18 in the control device, Fig. 2. The load 6 tends to bring the contacts 17, 18 together to shortcircuit the rotor of coupler 2. The load is thus driven in a succession of small steps. Speed governor.-A constant speed device, Fig. 3, comprises a centrifugal governor 22 which short-circuits the rotor of a three-phase rotating field motor 21 when the speed of a driving pulley 26 falls below a predetermined speed. A tachometer 29, Fig. 4, may be used instead of a governor. The rotor 35 of an induction motor 21 is normally short-circuited by relay R and follows the rotating field of the stator windings 34. When the maximum set speed is reached, indicator 46 engages contact 47 set by handle 45, relay R pulls up and removes the short circuit from the rotor which then slows down until the contact 47 is disengaged.
Patent GB-408546-A (GB)
Title: Improved construction of building for use as a shed, hall or the like
IPC: E04B1/34
Filed: 1933-11-10
Abstract: 408,546. Aviation and like sheds and halls. MOPIN, E. G. P., 90, Avenue Niel, Paris. Nov. 10, 1933, No. 31361. Convention date, Oct. 26. [Class 20 (i).] A building for use as an air-ship shelter, market hall, or shed, or for similar purposes, is formed with an extensive roof in the form of an hyperboloid of revolution with a centre support. The surfaces 2 and 3 can be generated by means of straight lines a, b, the ends of which move on circles spaced apart, and a point on the line moving tangentially with respect to another circle c<3>, Figs. 2 and 3. The centre support may be formed hollow and may be divided radially externally to form offices 5, the inner hollow being used as a water tank 7 and may support a fuel tank 6. Peripheral sliding doors may be provided.
Patent GB-365548-A (GB)
Title: Improvements in or relating to the manufacture of rubber articles
IPC: C08J5/02
Filed: 1930-10-20
Abstract: Rubber with a wrinkled surface is produced by bringing uncoagulated layers of rubber dispersions into localized contact with substances which effect both concurrent localized or total coagulation and localized contraction by dehydration or syneresis or into consecutive localized contact with two agents one of which effects localized or total coagulation and the other contraction. Suitable substances are grains of soluble or insoluble material, e.g. plaster of Paris, lime, burnt alum, calcium sulphate, dry starch grains, pumice and dry cellulosic particles, common salt, or droplets of a dehydrating and setting solution as in Specification 303,544, [Class 70, Indiarubber &c.].  The dispersions may contain also factice &c., fillers, such as leather, cork, or metal dust, fibres or colloidal metals, or artificial resins.  The wrinkled deposit may be set by heat or by a setting solution, and if desired the backing strata may have a prior coating of coagulant.  The formers may be internally heated and may be of any suitable material.  Electrophoretic deposits incompletely coagulated may be treated.  Master moulds or formers having a wrinkled surface may be thus produced and may be used as negatives or as positives for the production of, e.g. ceramic moulds. Specifications 290,313 and 324,988, [both in Class 70, Indiarubber &c.], also are referred to.
Patent GB-254603-A (GB)
Title: Improvements in or relating to fuel injection nozzles for internal combustion engines
IPC: F02M61/18
Filed: 1925-12-12
Abstract: 254,603. Banner, O. A. Dec. 12, 1925. Cylinders receiving liquid fuel. - The fuel nozzle is provided with convergent fuel passages 6 which meet at the rear of groove 7 perpendicular to the plane containing the passages. A sharp dividing edge 9 is formed between the passages 6, and the groove 7 is flared outwardly in the direction of its length. In a modification, a third fuel passage situated along the axis of the nozzle is provided.
Patent GB-465784-A (GB)
Title: Improvements in non-skid devices for vehicle wheels
IPC: B60C11/18
Filed: 1935-11-14
Abstract: 465,784. Wheel tyres. GRAY, B. P. Nov. 14, 1935, No. 31569. Addition to 443,427. [Class 144 (ii)] Relates to non-skid devices for embedding in the tyre tread and comprising a number of elements 10 having ribs, flanges, or other projections 11 and united by a flexible band as described and claimed in the parent Specification. According to the present invention, the flexible band, preferably formed of fabric layers 12, 13, encloses the elements on both sides as shown in Fig. 2 or Fig. 4, and is made wider than the band in the parent Specification so as fully to cover the bases of the elements and in some cases, Fig. 5, the flanges also. Figs. 3 and 4 show modifications of the channelshaped members forming the elements, The invention may be applied to tyre gaiters.
Patent GB-504706-A (GB)
Title: Improvements in or relating to thermal engines
IPC: F01K25/02
Filed: 1938-11-01
Abstract: 504,706. Liquid expansion engines; heat - exchangers. STEVEN, H., and STEVEN, (nee PIERET), M: Nov. 1, 1938, No. 31632. Convention date, Nov. 16, 1937. [Class 10] [Also in Group XIII] A heat-exchanger 12 acting on the countercurrent principle, in which the exhaust liquid from an engine operating by the force of expansion of a heated liquid preliminarily heats the liquid passing to a furnace for supply to the engine, comprises two concentric chambers separated by a conducting wall 21 and containing helically wound wire coils 22, 24, the space in the inner chamber inside the coil 22 being filled by heat conducting elements such as metal filaments 23. The engine comprises a working cylinder 1<1> and compression cylinder 1 fitted with controlled inlet and outlet valves and a piston member 2, 3 driving a shaft 5. The exhaust liquid from the cylinder 1<1> passes through the outer chamber of the exchanger 12 to a chamber 13 in which any contained air escapes and is finally cooled in a refrigerator 14. The cold liquid is supplied to the compression cylinder 1 from which it is forced at high pressure through the inner chamber of the exchanger 12 to a furnace 17 in which it is heated by passage through a helical coil 26 embedded in a mass 25 of copper or other heat conducting metal before reaching the cylinder 1<1>. A thermally controlled valve 28 allows water to pass to a second coil 27 embedded in the mass 25 if the mass 25 reaches a predetermined temperature. Water may also be vaporized in the coil 27 to heat the cylinder 1<1> and exchanger 12 at starting.
Patent GB-1260109-A (GB)
Title: Pyrotechnical fuze
Inventor: BEDALL HANS
IPC: F42C15/34
Filed: 1970-06-30
Abstract: 1,260,109. Projectile fuzes. K. DIEHL. 30 June, 1970, No. 31646/70. Heading F3A. A fuze for a hand grenade comprises a detonator 22, Fig. 1, which is moved into a live position adjacent a secondary charge 27 when a fusible element 18, securing a displaceable detonator carrier 19 to a fixed part 14, is softened by the heat from a combustible delay charge 13, safety means being provided to prevent ignition of the secondary charge so long as the carrier is not displaced into the live position. The safety means includes a flap valve 17 or (34), Fig. 4 (not shown), which is held closed by an insulating disc 17 displaceable with the carrier. In the live position of the carrier the valve is no longer held closed and is opened by an igniting jet from the charge 13. Additional safety is provided by a member 25 which prevents ignition of the secondary charge if the detonator is ignited in any position other than the live position. The charge 13 is ignitable by a percussion cap 10. A spring-striker 9 for the percussion cap is held at safe by a handle 4 which is thrown off by a spring plate 6 on removal of a safety pin 5. A perforated plate (32) Fig. 3 (not shown), may be provided beneath the percussion cap to prevent it igniting the detonator if the charge 13 is inadvertently omitted. In another embodiment, Fig. 5, the fusible element 18 is softened by a charge 39 and the detonator is ignited by the flash from a separate charge 40 passing along the bore 42 of a hollow striker 45. The striker is pendulously mounted in a plate 44 and is axially and radially restrained by the detonator carrier, but, on its displacement into the live position is free to swing the charge 40 against the wall of the chamber 38 to effect ignition. In a modification, Fig. 6 (not shown), the wall of the chamber is coated with the igniting charge (48). A flap valve 17 and a member 25 act as safety devices as before.
Patent GB-984374-A (GB)
Title: Improvements in or relating to friction wheel driving devices for dictating machines
IPC: F16H3/00
Filed: 1962-08-17
Abstract: 984,374. Change-speed friction gearing. WOLFGANG ASSMANN G.m.b.H. Aug. 17, 1962 [Aug. 17, 1961], No. 31649/62. Heading F2D. [Also in Division G5] The turntable 10 of a dictating machine is driven by an electric motor 1 through friction gearing comprising a stepped driving disc 3 with an intermediate second stepped disc 6 and a plain disc 9 respectively carried at the ends of links 16, 17 on a lever 18 pivoted at 21 and connected to a solenoid-operated linkage 14, 15 for effecting forward and highspeed reverse drives. In the off position shown link 14 is held by a centering spring 20 so that while discs 3 and 6 engage, the step portion 7 of disc 6 and the disc 9 are held clear of the turntable 10. For forward drive the armature of solenoid 13 is retracted so that step 7 engages the turntable periphery 12, while for reverse drive the armature is projected to wedge disc 9 between the periphery 8 of disc 6 and an inner turntable step 11 and to separate step 7 from the turntable periphery. In all settings the centres of discs 6, 9 lie on opposite sides of the line joining the centres of disc 3 and the turntable, so that during both forward and reverse running increased table loading tends to increase the frictional forces between the several discs.
Patent GB-1442421-A (GB)
Title: Propanolamines
IPC: C07D303/26
Filed: 1973-07-03
Abstract: 1442421 Tetrahydronaphthalenes E R SQUIBB & SONS Inc 3 July 1973 [3 July 1972] 31656/73 Heading C2C Compounds of the general formula (R<SP>1,2,8,9</SP>=H, C 1-8  alkyl, Ph-(C 1-8  alkyl); R<SP>7</SP> = H, Me; Ph=phenyl, optionally C 1-8  alkyl, halogen or nitro substituted) and their acid addition and quaternary ammonium salts are prepared by reacting an alkali metal derivative of the parent amino tetrahydronaphthalenediol with epichloro- or bromohydrin or the methyl derivative thereof, or with allyl or #-methallyl chloride followed by reaction with a peracid, and reacting the product with R<SP>1</SP>R<SP>2</SP>NH. The above compounds are #-adrenergic blocking agents, and may be administered in the form of pharmaceutical preparations containing them in association with a carrier.
Patent GB-533869-A (GB)
Title: Improvements in and relating to electric air heating apparatus
IPC: F24H9/20
Filed: 1939-12-07
Abstract: 533,869. Unit air heater. BRITISH THOMSONHOUSTON CO., Ltd. Dec. 7, 1939, No. 31672. Convention date, Dec. 9, 1938. [Class 137] A fan 2 driven by an electric motor 4 forces air to be heated over a heating element 1, a switch being provided to shift from the starting to the running connection and for energizing the heating unit at a pre-determined motor speed. Current from line conductors 11, 12 passes through a starting winding 5 and switch 15 until, when the motor 1 is rotating at a certain speed, the contacts 17, 18 of the switch 15 are opened by a centrifugal governor 19 rotated by a shaft 20 from the motor. This shifts the motor connections to the running winding 6, and energizes a relay 25 which, by a bridging member 28, closes contacts 26, 27, energizing the heating element 1 over which air is now being forced by the fan 2, overheating of the heating element being prevented. On reduction of motor speed, switch contacts 17, 18 are closed, and the circuit through contacts 26, 27 broken, the heating element being de-energized.
Patent GB-264141-A (GB)
Title: Improvements relating to the exhaust arrangements of locomotives
IPC: F23L17/16
Filed: 1926-12-14
Abstract: 264,141. Backhaus, H. Jan. 9, 1926, [Convention date]. Relieving back pressure.-The exhaust streams from the cylinders Z1, Z2, Fig. 1, in a locomotive are brought down to a low pressure but a high velocity by converging nozzles B1, B2 arranged so that the streams flow in the same directions and are conveyed to the blast pipe D through a common converging compression nozzle C. The nozzles B1, B2 are arranged eccentrically and are surrounded by a chamber from which steam can be fed to heat feed water or for other purposes. The Specification as open to inspection under Sect. 91 (3) (a) comprises also an arrangement where the exhaust of an engine is utilized by being passed through a relief nozzle B and compression nozzle C surrounded by a chamber G, Fig. 1, (Cancelled), and thence through a non- return valve D to the exhaust pipe F. The first part of the exhaust produces a suction effect in the chamber G and passes to F. As the pressure drops the valve D closes and the remainder passes to G, which is now a chamber of lower pressure. This lower pressure opposes the return stroke. In a modification, the nozzle D, Fig. 2, (Cancelled), is annular and the valve D can be dispensed with if the counter-pressure in the pipe F is prevented from striking back. This subjectmatter does not appear in the Specification as accepted.
Patent GB-811187-A (GB)
Title: Improvements relating to reinforced plastic chair pedestals
Inventor: THOMPSON STANLEY HOWARD ADCOCK
IPC: A47C7/00
Filed: 1956-10-19
Abstract: 811,187. Seat pedestals. TAN-SAD CHAIR CO. (1931) Ltd. Oct. 14, 1957 [Oct. 19, 1956], No. 31820/56. Classes 52(2) and 52(3) A pedestal is supported on feet moulded preferably from a polyester resin bonded glass fibre material and adapted to be secured together so that the united walls of the mouldings constitute webs for the strengthening of the pedestal. As shown, the outer end of each inverted channel sectioned foot is rounded and the inner end V-shaped so that the feet may be secured together by bolts 8, rivets or adhesive. The tip of the V has an arcuate recess 9 so that when secured together the feet support the pedestal in the socket thus formed. A strengthening plate may be fitted at the end of each foot.
Patent GB-1039375-A (GB)
Title: Dibenzocycloheptene compounds
IPC: C07D295/02
Filed: 1963-04-17
Abstract: The invention comprises compounds of the formulae <FORM:1039375/C2/1> and <FORM:1039375/C2/2> wherein each of X and X1 is a hydrogen or a halogen atom, or a C1- 5 alkyl, C1- 5 alkoxy, C2- 5 alkenyl, C1- 5 haloalkyl, phenyl, substituted phenyl, C1- 4 acyl, C1- 4 haloacyl, amino, C1- 5 alkylamino, di(C1- 5 alkyl)amino, C1- 4 acylamino, C1- 4 haloacylamino, C1- 5 alkylsulphonylamino, hydroxyl, C1- 5 haloalkoxy, cyano, carboxy, carbamoyl, C1- 5 alkylcarbamoyl, di(C1- 5 alkyl)carbamoyl, C1- 5 alkoxycarbonyl, mercapto, C1- 5 alkylmercapto, C1- 5 haloalkylmercapto, C1- 5 alkylsulphonyl, C1- 5 haloalkylsulphonyl, sulphamoyl or di(C1- 5 alkyl)sulphamoyl radical; and wherein more than one substituent may be on each benzenoid ring; and a process for their preparation by treating a compound having the formula <FORM:1039375/C2/3> or <FORM:1039375/C2/4> with an acid other than a halogen hydracid.
Patent GB-720249-A (GB)
Title: Improvements in or relating to printing surfaces for duplicating texts
Inventor: RITZERFELD WILHELM
IPC: B41M5/04
Filed: 1952-12-16
Abstract: 720,249. Printing surfaces. RITZERFELD, W., and RITZERFELD, G. Dec. 16, 1952 [Dec. 22, 1951], No. 31836/52. Drawings to Specification. Class 100 (2). A printing surface, e.g. for copying workslips or the like, which consist of a heading and a variable text, comprises a heading part in the form of a permanent printing foil which requires inking, e.g. a relief or stencilled printing surface, and a text part in the form of a hectographic mirror-script original. The permanent printing foil may be of aluminium or zinc foil and may be arranged to overlap the hectographic part somewhat, being connected to it in any suitable manner. The composite printing sheet of this form may be prepared for printing by introducing it into a typewriter with a sheet of hectographic carbon paper in contact with the hectographic part. The types engaging the rear face of the printing sheet impress mirror-script relief or stencil characters in the permanent printing foil and form mirror-script characters in hectographic ink on the other part. The hectographic carbon paper may be provided attached to the composite printing sheet and adapted to be torn off after the formation of the characters thereon. The permanent printing foil may alternatively be composed of a wax matrix, a thermoplastic foil, e.g. polyvinyl chloride or cast or stamped metallic relief printing plates. The hectographic part may comprise an artprinting paper.
Patent GB-442099-A (GB)
Title: Improvements in or relating to means for suppressing interference with the reception of radio transmissions caused by small motors and other electrical apparatus
IPC: H04B15/02
Filed: 1934-11-06
Abstract: 442,099. Protective arrangements. BELLING & LEE, Ltd., and LEE, E. M., Cambridge Arterial Road, Enfield, Middlesex. Nov. 6, 1934, No. 31924. [Class 38 (iv)] A radio interference suppressor comprises at least two condensers and a choke, one of the condensers 19 being arranged for connection across the terminals of the source of interference, e.g. a motor 11, a second condenser 20 being arranged for connection between one pole of the source and the frame 14, and the choke 22 being arranged for connection between the frame 14 and earth. A third condenser 21 may be provided for connection between the other pole of the source and the frame. The parts together with fuses 23 may be arranged in a casing adapted for mounting on a wall and having a flexible lead terminating in a three pin plug for the input connections 16, 17, 18 and sockets for the output connections. Alternatively the suppressor may be built into the appliance forming the source of interference or into a wall socket from which such appliance or a number of such appliances are to be fed.