baber/WOPTO huggingface dataset:
Patent GB-1217571-A (GB)
Title: Method of purifying a solution formed when crude phosphate is disintegrated by phosphoric acid
IPC: C01B25/234
Filed: 1968-02-07
Abstract: 1,217,571. Phosphoric acid. KLOCKNERHUMBOLDT-DEUTZ A.G. 7 Feb., 1968 [10 Feb., 1967], No. 6133/68. Heading C1A. Phosphoric acid is produced by disintegrating crude phosphate rock with phosphoric acid. The operation is performed in a continuous process by recycling the disintegration liquor. Monocalcium hydrogen phosphate is removed from the disintegration solution by crystallization. From part of the solution ferric phosphate and aluminium phosphate are precipitated by neutralizing at least part of the circulating liquor to a pH of greater than 3À3, preferably between 3À8 and 4À0. The neutralization is preferably effected by ammonia gas and water. The aluminium and ferric phosphate precipitates are filtered off and the ammonium phosphate (NH 4 H 2 PO 4 ) adsorbed by the precipitate washed with water into the filtrate. The filtrate is reacted with a strongly acid cation exchanger to produce pure phosphoric acid. The other portion of the solution is recycled and used to disintegrate further portions of crude phosphate rock.
Patent GB-953660-A (GB)
Title: Improvements in or relating to a cinematographic projector
IPC: G03B21/32
Filed: 1961-02-20
Abstract: 953,660. Cinematographic projectors. PAILLARD S. A. Feb. 20, 1961 [March 1, 1960], No.6159/61. Heading G2E. The lens, pressure plate, feed claw and camshaft for the feed claw in a projection are carried on a plate arranged transversely to the projection axis the cam-shaft and a longitudinal plate for carrying the rest of the projection mechanism being parallel as with the projection axis. As shown in Figs. 4, 5 and 6 the transverse plate 18 is secured to the upright longitudinal plate 1 and has a hearing 26 in an axially recessed portion 23 for a shaft 27 carrying a double cam-wheel 28. A spring-loaded claw arm 29,the tip of which extends through an opening 39 in plate 18 is reciprocated by cam 28 in pivotal motion about pin 30 and also about the axis VI-VI defined by two ball bearings 51, 52. A pressure plate 40, having an aperture 42 for the projection beam, is carried by plate 18 and is spring loaded by spring 41. A member 44 secured at 43 to plate 18 carries the lens mounting 45. Shaft 27 carries helical gears 35, 54 meshing with wheels 36 and 55 respectively (Fig. 7) which drive feed sprockets 9 and via gear-wheels 62, 63 drive a belt 61 connectedto two spindles on which are pivotally mounted areas for supporting a supply spool and a take-up spool respectively the said spindles being drivingly linked by gearing contained in each arm to the spool spindles. Each gear system includes a freewheel clutch so that according to the direction of running of the projector one or other of the spools is driven. The longitudinal plate 1 is flanged transversely for rigidity and a frame 67 secured at its top and bottom to the plate carries a transformer 66 and de-phasing condenser 69 for an asynchronous motor 64 which drives shaft 27 via belt 65 and operates a cooling fan 68. On its other side plate 1 carries a projection lamp housing and control switch for the motor.
Patent GB-594829-A (GB)
Title: Apparatus for the extraction of tyres from moulds
IPC: B29D30/06
Filed: 1945-03-13
Abstract: 594,829. Extracting tyres from moulds. DUNLOP RUBBER CO., Ltd., WILLSHAW, H., and BLANCHARD. L. S. March 13, 1945, No. 6223. [Class 87 (ii)] The lower mould half 7 is held down on the conveyer 9 by magnets 10, an expansible rim 6 is fitted into the bead of the tyre 8 and expanded to grip it. A crank 2 connected to the rim by a chain 4 is then rotated by an electric motor to pull the tyre out of the mould. The motor may be automatically controlled, e.g., by means of a cam on the shaft 1, to cause the crank to return to its original position by completing a revolution or otherwise, and to cause it to pause momentarily during the extraction of the tyre.
Patent GB-1013465-A (GB)
Title: Improvements in or relating to semiconductor devices
Inventor: STERLING HENLEY FRANK
IPC: C23C16/34
Filed: 1963-02-15
Abstract: 1,013,465. Semi-conductor devices. STANDARD TELEPHONES & CABLES Ltd. Feb. 13, 1964 [Feb. 15, 1963], No. 6259/63. Heading H1K. A P-N junction is established in a semiconductor body by diffusion from a buried source of impurity. To form the buried source a layer including a doping element of the opposite conductivity type from the semiconductor body is deposited on one face of the body; this layer may, but need not, be diffused into the body at this stage. A second layer of semi-conductor material is then formed on the said face to bury the impurity contained in the first layer. The buried impurity is subsequently diffused, or further diffused, into the original body material to produce a P-N junction which may be at a considerable depth (e.g. 40 microns) below the free surface of the second layer. The resulting structure is suitable for use as a high voltage diode. In Fig. 3 a layer 2 of boron-rich silicon has been formed on one surface of an N-type silicon body 1 by vapour phase epitaxial deposition and subsequently diffused into it; and this layer has been covered by a layer 5 of P-type silicon which also extends over the surface of the still N-type silicon outside the in-diffused region 2. The final diffusion produces the P-N junction 4A of Fig. 4. Subsequent shaping and the formation, by indiffusion of phosphorous, of an N+type layer on the opposite surface of the body results in a mesa diode (Fig. 5, not shown). Fig. 7 shows a portion of a slice 12 of N- silicon to which has been applied first a boronrich silicon layer 10 and a surmounting layer of more N-silicon. Heat treatment in an oxidizing atmosphere produces the extensive P-type region 16, whose conductivity is greatest at 10, forming a deep P-N junction at 14 and also produces an oxide coating 15. A hole (Fig. 9, not shown) may be excavated from the surface layer 15 to the depth of the region 10 so that an electrode may be attached to the P-zone in its most conductive region.  In either of the above embodiments P may replace N and vice versa, in which case phosphorous replaces boron. The epitaxially deposited boron-silicon layer may be replaced by a vapour-phase deposited film of boric oxide. Boron from this film is then diffused into the body, any excess boric oxide dissolved away in hydrofluoric acid, and the new boron-doped surface covered with further silicon to form the buried source.
Patent GB-511976-A (GB)
Title: Improvements in or relating to steam heating systems
IPC: F24D1/02
Filed: 1938-02-28
Abstract: 511,976. Valves. HIGHFIELD, J. S. Feb. 28, 1938, No. 6310. [Class 135] [Also in Group XIII] A float valve employed in the return-flow pipe of a hot water heating system comprises a tapered lift member 19, Fig. 2, actuated by a float 21 having a rod 20 moving in a guide 22. Alternatively, an apertured sliding piston 23, Fig. 3, is actuated by a float 21 carrying a rod 25 to limit the valve lift.
Patent GB-626293-A (GB)
Title: Improvements in and relating to magnetrons
IPC: H01J25/55
Filed: 1945-03-13
Abstract: 626,293. Magnetrons. BRITISH THOMSON-HOUSTON CO., Ltd. March 13, 1945, No. 6322. Convention date, March 14, 1944. [Class 39 (i)] A magnetron comprises a concentric transmission line type of cavity resonator of which the inner conductor forms the polepieces 11, 12. The anode structure comprises a number of radially extending conducting members 27 secured to the outer conductor 10, and a corresponding number of oppositely situated segments 28 interconnecting the inner conductors 11, 12. Members 27 and segments 28 are equally spaced from the cathode 13. The cathode 13 is supported on a tube 23 which also carries the heater leads, passing through the polepiece 12. The outer conductor 10 is preferably of copper or silver. The polepieces 11, 12 are energized by a solenoid 14 contained in a magnetic yoke 40, 15, 38, but may be permanently magnetized. The cavity resonator may be tuned by providing at one end an adjustable piston having spring fingers contacting the inner and outer conductors, and operable outside the vacuum. The relative lengths of polepieces 11, 12 may be so chosen that the optimum mode of operation is obtained.
Patent GB-415154-A (GB)
Title: Means for lining the inner faces of the walls of buildings
IPC: E04B1/41
Filed: 1933-03-02
Abstract: 415,154. Walls ; bricks. CARTWRIGHT, F., 84, New Road, Uttoxeter, Staffordshire. March 2, 1933, Nos. 6347 and 9429. [Classes 20 (iv) and 87 (i).] To permit a lining of wallboards or other material to be applied to the surface of a wall, certain of the bricks or blocks constituting the wall are provided with recesses 2 for the reception of wood nailing laths 5, which are secured in position by ties 6 inserted in the bonding between the courses of the bricks or blocks, and the recesses are so shaped that the laths can be inserted or removed after the wall has been built. The ties, as shown in Fig. 8, may be screw-threaded so that the lath may be secured by nuts 7 or they may be in the form of nails 8, Fig. 9, adapted to penetrate the laths and to be clenched over the same. The rear ends of each tie may be forked or provided with a large head. The recesses in the bricks may be vertically arranged centrally of the bricks or they may be provided along the vertical edges of the bricks. Where the bricks of the wall break joint as shown in Fig. 3, the vertical recess is provided alternately in the centre and at the ends of the bricks. The recess may also be formed by the co-operating grooves provided along the adjacent longitudinal edges of two courses of bricks. The ties are bedded in the mortar joints during the building of the wall and the laths may be simultaneously inserted in position.
Patent GB-495018-A (GB)
Title: Improvements in nursery or like toilet trolleys, service wagons or the like
IPC: A47B67/00
Filed: 1937-03-03
Abstract: 495,018. Nursery &c. trollies. BROWN, C. R., KNIGHT, H. A., and ALAND, M. March 3, 1937, No. 6352. [Class 52 (iii)] A trolly for use in nurseries, hospitals, &c. comprises a chest 1 mounted on wheels 2 and provided on its top with a rail 6 for positioning a cradle 8 or a bath, the chest having a drawer 3 and compartments for toilet articles, linen &c., a basket for soiled linen detachably fitted at one end, and handles for moving it about. The drawer 3 may be withdrawn from either side and the compartments are closed by drop flaps 4, 13 held in open position by stays 14. The handles are provided upon a pair of extensible sliding flaps 10 normally housed beneath the top, and may be used as towel rails. The lower compartment 15 receives the bath 16 and may be replaced by a drawer fitted with extensible props to support it when open, or the front of the drawer may be turned into a vertical position under the drawer to support it. The handles may be of the perambulator type and may be pivoted. A brake may be provided and the trolly may include an electric heater for food &c.
Patent GB-248565-A (GB)
Title: Improvements in or relating to plug and socket connectors and the like
IPC: H04R1/44
Filed: 1925-03-09
Abstract: 248,565. Rottenburg, H. March 9, 1925. Plug couplings.-A socket member comprises a contact formed of two resilient elements 4, 8, the former of which is secured by the socket 1, passing through a panel &c. 2, and forms a clip that holds the member 8 in position to make contact with the plug 12. Notches 6 in the arms of the member 4 engage recesses 9 in the member 8, and the arms of the latter are cut away at the corners 10 and bent backwardly at 11. A wire is attached to the member 8 by soldering either directly to a tag 13 cut from the member, or between the tag 13 and the end of the member 8. Alternatively a binding-post may be provided on the member 8.
Patent GB-726570-A (GB)
Title: Improvements in or relating to epoxy resin and polyamide compositions
IPC: C08L77/00
Filed: 1953-03-09
Abstract: A synthetic resin composition comprises (1) an epoxy resin derived from a polyhydric phenol and a halohydrin, and (2) a polyamide which is the reaction product of an aliphatic polyamine, a polymeric fatty acid and, if desired, another polycarboxylic acid.  The composition may contain 10-90 per cent of either ingredient.  The epoxy groups in the epoxy resin react with amino and/or carboxyl groups in the polyamide and the two resins thus mutually cure one another.  The polyamide preferably has an acid or amine number of 5-100 and a molecular weight of 1000-10,000. The Specification contains lists of suitable polyhydric phenols, polyamines, polymeric fatty acids and other polycarboxylic acids. The compositions may be used for moulding or casting; laminating or impregnating wood, glass, glass fabric, plastic film, synthetic fibres or paper board; clear or pigmented varnishes, e.g. for can linings or wire coatings; coating paper (see Group VIII); textile finishes; or adhesives, especially for metals. In examples, in which the epoxy resin is derived from a bis-phenol and epichlorhydrin: (1)-(4) dimerized soybean oil acids were heated with ethylene diamine at 130-200 DEG  C. and finally under vacuum. The resulting polyamide was mixed with epoxy resins.  (5)-(8) A mixture of dimeric soybean fatty acids, monomeric soybean acids, diethylene triamine and an alkyl-phenol/formaldehyde resin was heated at 200 DEG  C. and finally under vacuum.  The resulting polyamide was mixed with epoxy resins.  (9) and (11) Dimeric soybean oil acids were heated with diethylene triamine at 400 DEG  F. and finally under vacuum.  The resulting polyamide was mixed with an epoxy resin.  (10) A composition of a polyamide from dimeric fat acids and diethylene triamine and an epoxy resin in a solvent mixture of toluene and methyl isobutyl ketone was coated on to paper.  (12) A coating composition comprises the polyamide of example (5) and an epoxy resin in a solvent mixture of toluene, isopropanol and methyl isobutyl ketone.
Patent GB-536791-A (GB)
Title: Improvements relating to cycle and like bells
IPC: G10K1/074
Filed: 1940-04-10
Abstract: 536,791. Cycle bells. ADIE R NEPHEW Ltd., C. J., and FLETCHER, R. A. April, 10, 1940, No. 6443. [Class 13] The rotor of a cycle bell is made up as follows : a hollow post a, Fig. 3, with a shoulder b made from a solid bar or from sheet metal ; a washer e; a pinion c stamped from sheet metal; an arm f stamped with bottom projections or a corrugated recess g, Figs. 3 and 4, for keying engagement with the pinion, also with fingers h for holding the centrifugal weights k, and spacing projections j; and a resilient retaining strip i. After the parts have been assembled one over the other as shown in Fig 1, they are retained together by expanding the upper end of the hollow post a. The spacing projections j may be replaced by washers or a separate distance piece.
Patent GB-180086-A (GB)
Title: Improvements relating to electric heaters
IPC: F24C7/06
Filed: 1921-02-26
Abstract: 180,086. British Brass Fittings, Ltd., and Butler, H. B. Feb. 26, 1921. Electric radiators.-Relates to electric stoves or radiators of the type in which the resistance wires are mounted on a frame or support 1 in front of a reflector 8 arranged in grooves or recesses carried by the support. According to the invention the grooves or recesses 7 are provided on rearwardly extending flanges 6 of the support, and the reflector 8 is adapted to be slid or sprung into engagement therewith. In the construction shown in Fig. 5, the reflector 8 is preferably of a spring construction and is slid from one side to engage or disengage the grooves 7. In a modiflcation, Fig. 7, the reflector 8 is formed with the integral bars 9, by pressing which the reflector may be bent sufficiently to be inserted in the grooves 10 from the rear. Alternatively the reflector 8 may be rigid and the flanges 6 arranged to yield sufficiently to permit the insertion of the reflector.
Patent GB-286605-A (GB)
Title: A new or improved hand-operated digging appliance
IPC: A01B1/04
Filed: 1928-03-02
Abstract: 286,605. Bonal, G. de. March 5, 1927, [Convention date]. Hand tools for working soil, spades; forks.- A hand-operated appliance for digging without stooping comprises a spade, fork, or digging-tool connected by a chain or like flexible member to a portable stand or support. The stand consists of a base 2a, Fig. 2, and a tube 2. The spade or fork 1 is detachably connected by the chain 6 to an adjustable bar 9 on a lever arm 5 projecting from a spindly 3 which is mounted in a sleeve 2<b> on the tube 2 and is provided with an operating-lever 4. The tool is forced into the ground by the operator's foot and is then tilted by his right hand grasping the handle 7. The tool is raised by pulling on the lever 4 with the left hand, and the soil is discharged by pushing forward the tool and turning it over about its longitudinal axis by means of the right hand. The Specification as open to inspection under Sect. 91 (3) (a) describes also the arrangement shown in Fig. 4 (Cancelled), in which the stand consists of a sheet-iron plate 11 provided with two raised tracks 12 with which are adapted to engage rollers 13 on arms projecting from the fork or digging-tool 1. Pivoted on the stand is a frame 16 provided with teeth 15 and with pivoted handle-bars 19. Stops 22, 21 limit the movements of the frame 16 and handle-bars 19. The fork 1 having been driven into the soil is tilted backwards by means of the handle 7 until the rollers 13 engage the tracks 12 and the tool assumes a horizontal position. It is pushed forwards and may then suddenly be drawn backwards from beneath its load. The soil may be broken up before being discharged by means of the frame 16 and prongs 15, the handle-bars 19 being worked to and fro by the operator's left hand grasping the handle 20. If a spade is used the teeth 15 may be replaced by articulated scrapers or cutters which cut up the soil and push it off. This subject-matter does not appear in the Specification as accepted.
Patent GB-416014-A (GB)
Title: Improvements in, or relating to, teapots, coffee pots, and like vessels
IPC: A47J45/07
Filed: 1933-03-04
Abstract: 416,014. Teapot &c. handles. MIDLAND METAL SPINNING CO., Ltd., and WYER, J. M., Pelham Street, Wolverhampton. March 4, 1933, No. 6637. [Class 66.] Handles B, Fig. 6, are attached to aluminium or other metal teapots &c. by means of screws F passed through the ends of the handle and engaging nuts or bushes G disposed in similarly shaped non-circular recesses in the body of the vessel under cover-plates C riveted thereto. The recesses may be initially of part-spherical form and brought to the required shape by striking the cover-plate after insertion of the nut. Extensions of the bushes may pass through holes in the cover plates and be riveted over at the outer faces thereof, or longer extensions surrounded by heat-insulating bushes J, Fig. 8, may be provided. Alternatively the screws may be formed with square, hexagonal or other non-circular heads f, Fig. 7, which are engaged in the depressions.
Patent GB-123648-A (GB)
Title: Improvements in or relating to Braces for Personal Wear.
Inventor: HARDY WILLIAM REYNOLDS
IPC: A41F3/02
Filed: 1918-04-20
Abstract: 123,648. Hardy, W. R. April 20, 1918 Braces; trousers. - Each front end of a pair of braces a is provided with a metal loop c to which is secured a leather strip d. Near the top of this strip is attached a second narrower leather strip d<1>. In a loop at the lower end of each strip is a metal terminal, the under and wider one c being concave and having a slot h at its lower end, while the upper narrowed one f is convex with its extreme lower end g turned up. The trousers i, with which the braces are to be used, is without front buttons, but is provided with two slits j. In use, the end of the lower metal terminal e is passed through the trousers' slit j, and the end of the upper metal terminal passed through the slot h. To release the terminals, either the strip d<1> or the corresponding metal terminal f is lifted, whereby the terminals become disengaged.
Patent GB-309988-A (GB)
Title: Improvements relating to the manufacture of self-lubricating bearings
IPC: F16C33/18
Filed: 1929-03-02
Abstract: 309,988. Skillman, N. April 19, 1928, [Convention date]. Bearings; compound forms. - A spherical bearing member 1, Fig. 5, having a lining 2 of fibrous material impregnated with lubricant, is made from a piece of metal tubing 3, Fig. 2, in which a strip of lining material 4 is inserted. The tube 3 is pressed between dies 5, 7, Fig. 4, to spherical shape, a member 6 preferably being used to hold the lining in place. The member 1 is then held between members 8, 9, and the lining 2 is compressed to fill the member 1 and to its final bore by a spindle.
Patent GB-300447-A (GB)
Title: Improvements in or relating to drying and finishing machines for textile fabrics
IPC: D06C3/04
Filed: 1928-03-05
Abstract: 300,447. Bates, E. B. March 5, 1928. Drying fabrics in long lengths. - A tubular fabric is dried by hot air introduced by the pipe 3, is stretched on a frame 11, and finished by rolls 33, 36. The fabric is on a cartridge 1 which rests on a flange 2 on the pipe 3 and is surmounted by a fish tail 4. The stretcher consists of a centre post 11, adjustable cross-rails 7, 8, and side rails 5 carrying rollers 6 and curved towards each other at their bottom ends. The stretcher is supported in a socket 13, out of which it is lifted by a cable 12 passing through the separated rolls 33, 36 when a new cartridge of fabric is to be put into position on the flange 2. Tappets on the cable 12 operate a rod 30, a catch 32, and a clutch to limit the rise and fall of the cable. A tube 14 with transparent sides 15 around the frame 11 induces convection air currents and thus assists in the drying of the fabric. The rolls 33, 36 carry intergeared wheels 45, 46, one roll 33 is driven through worm and variablespeed gearing 35, D, while the other roll 36 can be moved to and from the roll 33 by a screw 39 and gearing 40, 41. The rolls are loaded by springs 43 to an extent indicated by a pointer 44. Positively driven rollers at the sides of the frame 11 but external to it feed the fabric over the frame. The finished fabric is baled on a roller 47.