baber/WOPTO huggingface dataset:
Patent GB-876535-A (GB)
Title: Graft copolymers and shaped articles consisting of or containing them
IPC: C08F255/02
Filed: 1959-10-29
Abstract: Graft copolymers comprising 98%-75% of a polymerized mono-olefin containing from 2-3 carbon atoms in the molecule and grafted thereon from 2%-25% by weight polymer chains of a monoethylenically unsaturated carboxylic acid, such as acrylic and/or methacrylic acid, are produced by creating active centres or sites, which are capable of initiating vinyl polymerization, along the chains of a polymer or copolymer of ethylene and/or propylene and reacting the activated polymer with the acid at 65 DEG -175 DEG C. The initial polymer may be polyethylene, polypropylene, a mixture thereof or an ethylenepropylene copolymer, and activation may be effected by treatment with high energy radiations such as gamma rays, X-rays or high-speed electrons, or by treating with ozone.  The monomer is preferably reacted with the activated polymer in the presence of a diluent which may swell or dissolve the polyolefin, such as benzene, toluene, xylene, dioxan, hexane, heptane or octane.  The carboxylic acid groups of the copolymer can be converted to salt groups such as the sodium, calcium, barium, magnesium or copper salt.ALSO:Graft copolymers comprising polymer chains of acrylic acid grafted on to polyethylene (see Group IV(a)) are compression moulded on to a brass sheet at 185 DEG -200 DEG C. under an applied pressure of 8000 p.s.i.g. to form a graft polymer film adhered to the sheet.  The graft copolymers may also be similarly adhered to copper, magnesium, aluminium and steel sheets.
Patent GB-1325236-A (GB)
Title: Permanent magnet dc motor
IPC: H02K23/62
Filed: 1971-08-05
Abstract: 1325236 D.C. motors INTERNATIONAL STANDARD ELECTRIC CORP 5 Aug 1971 [7 Aug 1970] 36791/71 Heading H2A A D.C. motor comprises a hollow cylindrical permanent magnet rotor 1 and a stator including an annular core mounted on a discoidal support member 14, Fig. 2 (not shown), there being a plurality of coils on the core and a commutator for successively connecting the coils to a source of D.C. The motor shown has permanent magnets 3 and 6 radially outside and 4 and 5 radially inside a laminated annular core carrying four part-toroidal coils I, II, III, IV. The coils may be commutated by transistors, Fig. 3 (not shown), controlled by a photo-electric rotor position sensor 10, 11, 12 or by an inductive rotor position sensor. Alternatively, a mechanical commutator and rotating brushes may be employed. The stator coils may be connected in series or in parallel to the D.C. supply. There may be one toroidal winding with four tapping points. The radially inner or outer rotor magnets may be omitted. The motor may be used in sound recording/reproducing equipment.
Patent GB-1000856-A (GB)
Title: A final stage of a servo amplifier
IPC: G05D3/14
Filed: 1963-09-19
Abstract: 1,000,856. Control of A.C. motors. REGULATOR A.G. Sept. 19, 1963 [Sept. 28, 1962], No. 36846/63. Heading H2J. An output amplifier for a servomotor M comprises transistors Q 1 , Q 2  energized in push-pull and feeding two groups of rectifier gates D 1 -D 4  and D 5 -D 8  connected in parallel between the collectors, each group having two sub-groups in opposition as shown. A reference A.C. supply T 2  of equal frequency also feeds the rectifiers as shown, in phase or phase opposition to the input to transformer T 1  and therefore a full-wave A.C. output is applied to one winding or the other of the motor M. Capacitor C produces a 90 degrees phase displacement of the energization of the other motor winding. Switches S 1 , S 2  are opened only when the motor controlled member reaches its maximum limit of correction. The transistors may be replaced by S.C.R.'s.
Patent GB-522946-A (GB)
Title: Improvements in permeability tuner
IPC: H01F21/06
Filed: 1938-12-19
Abstract: 522,946. Adjusting electric coupling coils. JOHNS ON LABORATORIES. Inc. Dec. 19, 1938, No. 36923. Convention date, Dec. 24, 1937. [Class 37] [Also in GroupXXXV] A permeability tuner for wireless receivers comprises a housing, a plurality of tuning units in the housing each including a condenser, an inductance coil and a core of magnetic material movable in said coil, a member connected to the cores and holding them in similar inductance relationship to said coils, a manually operated mechanism for moving the member so as to alter the inductance of the coils for tuning purposes, a metallic shield enclosing each tuning unit, a shelf extending across said housing and supporting the shields and a cover plate enclosing the manually operable mechanism, the shelf and cover plate being formed and mounted so that together'they embrace the shields and hold them in position. Each unit comprises a magnetic core 21 sliding in a coil 14 connected to a flat capacitator adjustable for trimming., The coils are mounted adjustably on tubular formers 13 supported at one end on insulated plates 12 fixed to the front wall of the metal plate 10 constituting the housing and at their rear ends in plates 15 supported by brackets 16 fixed to a metal plate 11 forming the shelf which divides the tuning units from the lower part of the housing in which the rotary shaft 36 operated by the tuning knob 42 is contained. Alteration of the position of the coils for alignment purposes is obtained by fixing the formers 13 to screws 20 which may be rotated in threaded spring plates 19. The cores 22 are supported by insulated extensions 22, 23 brackets 24 projecting through slots in the shelf 11 and fixed to a plate 26 which constitutes the operating member. The shields 28 enclosing the permeability units are held in position between projecting ribs 27 formed in the shelf 11 and a cover plate 47 (Fig. 13) which encloses and forms the rear and bottom walls of the housing. The ribs 27 in the shelf 11 form on'the bottom side of the shelf corresponding grooves which act as guides for the operating plate 26. This latter is reciprocated by and transversely to the rotary shaft 36 through fraction gearing comprising a pair of parallel operating rods 39 connected to a flange 26a on the plate 26 and running in annular grooves 36a, 36b formed in the shaft 36 against which they are held in'frictional engagement by spring pressed rollers 40 as described in Specification 522,994. Remote control of the tuning unit (Fig. 15) is obtained by connecting the shaft 36 through a flexible shaft 51 to an operating knob 52, a pointer 54 on a scale 57 being connected through a flexible wire 55 to a point on a movable part of the tuning mechanism. Two multi coil units may be operated from a single rotating shaft (Fig. 14 not shown). Slipping of the friction reduction gear is prevented by providing rack and pinion mechanism attached to the operating member and the rotary shaft respectively.
Patent GB-1207600-A (GB)
Title: Venetian blind
IPC: E06B9/322
Filed: 1968-08-02
Abstract: 1,207,600. Venetian blinds. CHR. FABERS FABRIKER A.S. 2 Aug., 1968 [22 Jan., 1968], No. 36977/68. Heading E1J. A tilt roller mounting unit for a venetian blind and adapted to be mounted in a rectangular opening 30 in the base of a U-section head rail 32 comprises a U-section bearing bracket having parallel sides 2 and 4 and moulded from resilient plastics, the roller 8 being mounted between the sides 2, 4 on a spindle, the base of the U-having transverse strengthening projections with ribs and are provided with oppositely outwardly directed slots 14, 16, slot 14 being of greater depth than slot 16 to receive the transverse edges of the opening in the head rail base so that with the tapes on the roll 8 and the bracket pushed up through the opening the slot 14 first receives its edge, and resiliently depressing a sawtooth stop 36 and increasing temporarily the width of the groove 14 until the said edge reaches towards the end of the slot 14 when the slot 16 is faced towards and the bracket is moved to the left to receive the adjacent edge of the opening in the rail, whereupon both slots retain ther respective edges and the saw tooth stop 36 snaps down in front of its adjacent opening edge 30 to fix the bracket in the opening. The bracket has two parallel walls 12 between which is 'mounted a lift cord pulley 22 on a shaft 28 mounted in said walls 12.
Patent GB-1056600-A (GB)
Title: Aluminium cementation process
IPC: C23C10/48
Filed: 1965-08-27
Abstract: Al is diffused into an article (e.g. of steel) by embedding the article in a penetrant consisting of a mixture of (a) powdered Fe or a powdered Fe-Al alloy (b) Al powder having a particle size greater than 300 mesh (Tyler), e.g. 20 to 300 mesh and (c) 0.1 to 5% by weight of a cementation accelerator (e.g. NH4Cl), the penetrant being contained in a non-sealed vessel, and heating the penetrant with the article embedded therein (e.g. to 1000 DEG C.).  Fe-Al alloy may be prepared by mixing 70 parts by weight of Fe powder having a grain size of 30-80 mesh (Tyler) and 30 parts by weight of Al powder having a grain size of 20-300 mesh and heating gradually to 1000 DEG C.
Patent GB-1077354-A (GB)
Title: Improvements relating to fault current protective switches
IPC: H02H3/04
Filed: 1964-09-10
Abstract: 1,077,354. Protective arrangements. SCHUTZAPPARATE - GESELLSCHAFT PARIS & CO. m.b.H. Sept. 10, 1964 [Sept. 11, 1963], No. 37035/64. Addition to 1,005,941. Heading H2K. [Also in Division G1] In an arrangement for supplying a load from a mains network via a contactor, the energizing circuit for operating the contactor C includes a fault current protective switch F1-SW and a testing device for testing the protective switch prior to the closure of the contactor. The circuit is such that no attempt to close the contactor can be made before the testing device has tested the arrangements and determined that the protective switch is operating correctly. Initially relays A, B, C, D are de-energized and the protective switch F1-SW is closed. The test switch T 1  is closed, so that the auxiliary relay B connected to the neutral line N is operated via the normally closed contact a 1 . This closes contacts b 1 , b 2 , b 4  and opens b 3 . The slow release relay A connected between one phase R and the protective line Pro now operates to close holding contact a 3 , contact a 2  and open a 1 . Current flows through the testing circuit IV, which includes a thermistor R 2  and a thermal cut-out Th. As the resistance of R 2  falls, so the current increases and eventually the protective switch should operate. If it fails to do so, the voltage rise on the conductor Pro causes the relay A to de-energize, so releasing contact a 2  and de-energizing the relay B. The opening of the contact a 3 , indicated by the lamp L 2 , prevents the contactor C being operated. If on the other hand the protective switch operates normally, the relay B will be deenergized opening the contact b 4  and thus disconnecting the test circuit IV leaving the relay A energized, and the contact a 2  closed. Subsequent closure of the protective switch indicated by the lamp L 4  completes the circuit to switch T 3 , the energizing switch to the contactor, and the readiness for operation of the contactor circuit is indicated by a lamp L 3 . If both the relay A and the protective switch Fl-SW are faulty, the build up of current in the circuit IV is terminated by the cutting out of the thermal switch Th, and this is indicated by the lamp L 1 . If a large voltage appears between the neutral and protective circuits, a relay D operates, to close contact d 1 . The current through the circuit V should bring into operation the protective switch. If the contactor circuit is broken by operating switch T 2 , the test procedure must be carried out again, since this switch also breaks the circuit of relay A and thus opens contact a 2 .
Patent GB-1116403-A (GB)
Title: Improvements in or relating to door fastening devices
Inventor: FOWLER PETER MAXWELL
IPC: E05B65/32
Filed: 1964-09-10
Abstract: 1,116,403. Latch strikers. WILMOT-BREEDEN Ltd. 9 Sept., 1965 [10 Sept., 1964], No. 37057/64. Heading E2A. A striker assembly for a motor vehicle door fastening device has a main body 10 which is moulded from a synthetic plastic material for initial engagement with a latch member 1 of the device on door closure and a metallic insert 19 which engages the latch member in the latching position. The main body 10 has three integrally moulded portions i.e. a back plate portion 10a, a lower edge guide and latch engaging portion 11 and an upper edge guide portion 12, The lower surface of the portion 11 and the upper surface of the portion 12 co-operate with flanges 3 and 4 of a guide plate 2 which is carried by the latch mechanism of the fastening device and this engagement aligns the latch member 1 and the striker assembly. The insert is an L-shaped steel plate which is received in a recess having a complementary profile the insert being entered into the recess from the rear of the main body. In use an upper lobe 5 of the latch member 1 initially engages the leading end of the upper guide portion 12 which turns the latch member against spring loading so that the lobe 5 enters between the guide portions so that the lobe can enter a recessed section 27 of the upper guide portion 12; this enables a spring to return the latch member until a lobe 8 engages the inclined surface 23 of the lower guide portion 11. The lobe 8 travels up the surface 23 and eventually the spring loading turns the latch member until its surface 9 engages an exposed surface 25 of the insert 19. The lower portion 11 has a recess which provides a housing for a moulded nylon wedge 16 which is slidable on a pin 17 and which is spring loaded against the direction of relative movement of the striker assembly with respect to the latch member 1 on door closure. The main body is provided with three holes 13 for fixing screws and moulded recesses 14 to accommodate their heads; the base of each recess is of convex frusto-conical shape so that when the screws are tightened the plastic material of the body is deformed into the screw holes 13 and into engagement with the screw shanks to lock the screws in position The screw hole 13 in the portion 11. is arranged so that the head overlaps the insert 19. The rear surface of the main body is moulded with serrations, horizontal in the upper half and vertical in the lower half.
Patent GB-1481386-A (GB)
Title: Process for preparing vincamine nicotinate salt
IPC: C07D213/80
Filed: 1975-09-09
Abstract: 1481386 Vincamine nicotinate LABORATORIOS ROGER SA 9 Sept 1975 [14 Sept 1974] 37110/75 Heading C2C Vincamine nicotinate is prepared by reacting nicotinic acid directly with vincamine in a common polar solvent, allowing the reaction mixture to stand, and subsequently evaporating it to dryness under vacuum.
Patent GB-326834-A (GB)
Title: Improvements in or relating to grates for use in ore treating holders
IPC: B07B1/16
Filed: 1928-12-19
Abstract: 326,834. Alexovits, T. M., and Greenawalt, J. E. Dec. 19, 1928. Open-pan sintering-apparatus. - A grate, particularly for use in ore-sintering pans, has bar-carrying frames which are rocked, when the pan is rotated for dumping, to impart different kinds of movement to different bars. The pan is stiffened transversely by beams 1 which serve to support the rocking frames 2 which are supported by pins 15<1> carried in brackets 6 secured to the beams. The end row of frames is supported at one side by the wall of the pan. The grate bars are arranged in alternate rows of short and long bars 23, 24, the bars 23 being half the length of the bars 24. The end bars 21 on each frame are integral with the frame. An arm 22 on each frame engages a heavy slotted bar 33 which slides in guides 34 when the pan tilts and causes the frames to rock. The bars 23 are held in the frames by flanges 26 so that they rock with them, but the bars 24 are each held by two frames in such a way that the bars do not tilt, but move upwards when the frames rock. Specification 263,363 is referred to.
Patent GB-879890-A (GB)
Title: Improvements in spray-coating processes
Inventor: GOULET RONALD PETER
IPC: B05D1/02
Filed: 1959-11-05
Abstract: An article is spray-coated with a composition comprising a coating material dispersed in a volatile solvent, by exposing the uncoated article to the vapour of the solvent until it has attained the temperature thereof, spraying the article with the coating composition at its boiling point, maintaining the article in the solvent vapour atmosphere for 5 seconds followed by such further period as is required to reduce the coating thereon to the desired thickness, and then removing it from the solvent vapour atmosphere and allowing it to cool.  Suitable coating materials are alkyd resins, asphalt, phenolic lacquers, acrylic resins, polyethylene, polystyrene, and some rubber-based compositions. The preferred solvents are trichlorethylene, perchlorethylene and methylene chloride, but hydrocarbon, ketone or other solvents may be used.  In an example, a trichlorethylene composition comprising solvent, linseed oil-modified alkyd resin, and lamp black pigment is heated to boiling point in a conventional vapour phase degreaser provided with cooling coils at the top to prevent loss of solvent, and with spray nozzles through which the paint is forced by a pump.  Steel panels are immersed in the solvent vapour until heated to the temperature thereof, then spray-painted, and then exposed to the vapour for varying intervals before removal. The process may be carried out continuously, the articles being carried through the various treatment stages by a conveyer.
Patent GB-626732-A (GB)
Title: Improvements relating to the manufacture of cement
IPC: C04B7/38
Filed: 1946-12-24
Abstract: Limestone containing magnesia is treated to render it suitable for the manufacture of Portland cement by subjecting it, after crushing to a sink-and-float separation to remove magnesium carbonate, and then to a froth flotation separation to remove magnesia-containing silicates.  The limestone is first coarsely crushed to separate the carbonate grains from one another and the fine fractions are removed. It is then treated with a liquid of specific gravity between those of magnesium and calcium carbonates.  The retained portion is then finely ground, mixed, if desired, with the portion separated after the first crushing, and subjected to froth flotation.  Part of the limestone may be subjected to one treatment only.ALSO:Limestone containing magnesia is treated to render it suitable for the manufacture of Portland cement by subjecting it, after crushing, to a sink-and-float separation to remove magnesium p  carbonate, and then to a froth flotation separation to remove magnesia-containing silicates.  The limestone is first coarsely crushed to separate the carbonate grains from one another and the fine fractions are removed. It is then treated with a liquid of specific gravity between those of magnesium and calcium carbonates.  The retained portion is then finely ground, mixed, if desired, with the portion separated after the first crushing, and subjected to froth flotation.  Part of the limestone may be subjected to one treatment only.
Patent GB-970908-A (GB)
Title: Machine for packing containers
IPC: B65B21/16
Filed: 1962-10-08
Abstract: 970,908. Packaging machines; endless conveyers. J. H. WALTER. Oct. 8, 1962 [Oct. 9, 1961], No. 38024/62. Headings B8A and B8C. Bottles or other containers are supplied on a conveyer 60 to an endless conveyer 58, Fig. 2, on which a cam-operated gate opens at intervals to release groups of bottles to the control of bars 162 carried by a pair of endless chains 160, the bottles being assembled between partitions 178 of a frame 176, Fig. 10, until a grid 204 is reciprocated to allow the bottles to drop through partitions 198 into a crate which is raised on a plate 334. Bottle assembly.-The bottles are marshalled into lanes formed by partitions 62. An adjustable cam, Fig. 7 (not shown), operating the control gate enables the number of bottles passing through the four entrances in the gate to be predetermined. The gate is formed by hexagonal rods pivotable on a vertical axis and carrying roller members, Fig. 6 (not shown), which bar the bottle path until the rods are rotated. The chains 160 are driven more slowly than the conveyer 58 so that, on passing through the gate, the bottles are restrained by a bar 162 which precedes them. The leading bottles, passing on to a support plate (not shown), slow down those following until a second bar 162 catches them up and pushes them between the partitions 178, where they rest on members 208 of the grid 204. The bars 162 pass under partitions 64. Crating and crate movement.-A box member 266 having a limited movement on rollers 276 transfers empty crates to a ramp 258 pivoted respectively to the box member and to members supporting the plate 334. The crates are moved by a bar 306 carried by chains 304 and bars 290 carried by chains 288. On reaching the plate 334, the crate is raised to receive bottles which fall through resilient members 202 depending from the partitions 198. The crate raising mechanism comprises a carriage, formed by a pair of forks 338 carried by uprights 342, which is reciprocated up and down in an arcuate path by crank members. The plate 334 and associated members ride freely on the carriage but in a vertical path due to rollers 358 tracking a flange 360 on the machine frame. After loading, the crates pass on to rollers 312 on a ramp 310 pivoted to the plate support at one end and at the other carried by a roller 314. Switches cause the drive of the machine to be broken should the feed of crates or bottles fail, or if a bottle becomes displaced during crating.
Patent GB-948723-A (GB)
Title: Unwinding device for reels of strip material
IPC: B21C47/24
Filed: 1962-10-08
Abstract: 948,723. Unwinding webs. BETEILIGUNGS - UND PATENTVERWALTUNGSGELLSCHAFT m.b.H. Oct. 8, 1962 [Oct. 12, 1961], No. 38062/62. Heading B6B. [Also in Division B3] An arrangement for continuously unwinding strip from a succession of reels includes one station at which a reel is unwound and fed to a rolling mill and a preceding station at which the unwinding of a succeeding reel is commenced, the leading end of the strip of this reel being forwarded through the first station as the unwinding of the reel at that station is completed, the said succeeding reel moving then to the first station. Strip is fed by rollers 31, 32 from a reel 33 supported on rolls 23, 24 on a plate 26. A succeeding reel 22 is allowed by lowering means 7 to roll on to rollers 8, 9. The roller 9 is lowered by hydraulic means 17 and a member 11 is swung down about a pivot 10 and in co-operation with the rollers 8, 9 which are driven, a roller 18 raised by hydraulic means 20 and a roller 13 on the member 11 feed the strip from the reel 22 over a table 21 towards the reel 33. At this stage unwinding of the reel 33 is almost complete, the plate 26 has been lowered, Fig. 2, by hydraulic means 29 and the feed roller 32 lowered by hydraulic means 35, the reel 33 being supported by a laterally introduced member 39. The strip from the reel 22 thus passes between the rollers 31, 32. The roller 32 is then raised to feed the strip and the empty reel 33 removed by the member 39. The member 11 is lifted, the roller 8 raised by means 16, and the roll 18 lowered so that the reel 22 moves over the table 21 on to the rollers 23, 24, the plate 26 having been tilted by engagement with a stop 30. The plate 26 is then raised to bring the reel 22 into the position occupied by the preceding reel 33. In a modification, Fig. 4, the reel 22 is first supported by rollers 42, 43 on a table 41, movable horizontally on rails 40 and liftable by means 44. A roller 49 prevents springing up of the reel 22. In operation, table 41 carries the reel 22 to a position below the member 39, a guide table 52 for the strip having been lowered. The reel 22 is then raised and is held by the member 39 and the table 41 is moved back.