baber/WOPTO huggingface dataset:
Patent GB-665420-A (GB)
Title: Improvements in froth flotation processes and frothing agents for use therein
IPC: B03D1/008
Filed: 1949-10-14
Abstract: In the froth flotation of minerals the frothing reagent is a tetra-ethoxy paraffin having in the paraffin chain two to five carbon atoms to any two of which are attached pairs of alkoxy groups from the series methoxy, ethoxy, normal propoxy and isopropoxy.  The agents, e.g. 1.1.2.2 tetra ethoxyethane, 1.1.3.3 tetra ethoxy propane or 1.1.5.5 tetra ethoxy pentane, may be used with a xanthate as collector on sulphide ores.  Specification 662,122 is referred to.
Patent GB-813050-A (GB)
Title: Improvements in or relating to wire stitching machines
Inventor: KIRBY WILFRED
IPC: B42B4/00
Filed: 1955-09-16
Abstract: 813,050. Wire stitching machines. VICKERS-ARMSTRONGS (ENGINEERS) Ltd. Sept. 16, 1955, No. 26569/55. Class 89(3) [Also in Group XXIV] A wire stitching machine is provided with two stitching heads adapted for independent operation from a common drive means through separate drive transmission assemblies each of which includes a clutch mechanism and a releasable coupling. An electrically driven pulley 11, Fig. 2, is coupled by a belt 12 to a larger pulley 16 which drives a bevel gear 17 meshing with two further coaxial bevel gears 18, each keyed to a clutch shaft 19 in each of the separate drive transmission assemblies. On each clutch shaft 19 is mounted a coil spring clutch C in which a cylindrical pawl 22 having a projection 23 Fig. 3, co-operates with a clutch key 27 controlled by a foot pedal. When the key 27 releases the pawl 22 the coil spring in the clutch tightens and effects a drive on to the clutch housing 25. Subsequent engagement of the key 27 with the projection 23, upon release of the pedal, causes the spring to unwind to disengage the clutch. A shock absorber 29, Fig. 3 dampens the blow of the projection 23 on the key 27. The housing 25 is releasably engaged by the keyed end 37 of a coupling shaft 35 hinged at 36 to the driven shaft 33 of the stitching head. The keyed end 37 carries a spring loaded axial pin 39a engaging an axial recess 40 in the housing 35, the pin being connected to a knurled ferrule 35a by means of which the pin 39a can be withdrawn to release the coupling shaft 35 by swinging it down as shown in chain dotted lines in Fig. 2. The anvil of the stitching machine is operated by a cam 26 on the housing 25, acting through a cam follower 43, levers 45a, 45b, and linkage 47.
Patent GB-246248-A (GB)
Title: Improvements in rolling joists
IPC: B21B1/08
Filed: 1924-11-07
Abstract: 246,248. Doughty, T. Nov. 7, 1924. Rolling.-A profile section, particularly a joist, is formed by passing a flat billet, from a pair of cogging-rolls, through rolls as described in Specification 703/83 to form a W or channel section and then passing such section through a pair of rolls to form an I section. Fig. 4 shows the fourth roll pass forming the W-section, with thickenings at the base of the V's, which is then rolled in rolls Fig. 5 where the thickenings are spread to form flanges. The joist is finished in a further pass.
Patent GB-815828-A (GB)
Title: Improvements in the plasticisation of synthetic rubber
IPC: C08K5/13
Filed: 1956-08-31
Abstract: Butadiene-styrene or butadiene-acrylonitrile synthetic rubbers containing an antioxidant are plasticized by mastication on rollers or on a kneader at temperatures within the range of about 60 DEG  to 150 DEG  C. with from 0.5 to 3 per cent by weight, based on the synthetic rubber, of 2,21 - methylene - bis - (6 - methyl - 4 - tertiarybutyl phenol).  The compositions may also contain additives such as carbon black and other fillers, zinc oxide, stearic acid and vulcanization accelerators.  In the examples, a butadiene-styrene synthetic rubber containing phenyl-b -naphthylamine is masticated on rollers with 2,21 - methylene-bis-(6-methyl-6-tertiarybutyl phenol).
Patent GB-223738-A (GB)
Title: Improvements to wire spring mattresses
IPC: A47C23/14
Filed: 1923-10-25
Abstract: 223,738. Bull, G. J. Oct. 25, 1923. Wire fabrics.-A wire spring mattress is formed of intermeshed wire strands, some of which are coloured, or of intermeshed strands of uniform colour provided with a back of coloured strands. A backing of plain or coloured strands may be provided for the mattress formed of the differently-coloured strands.
Patent GB-519073-A (GB)
Title: Improvements in or relating to machines for trimming boot or shoe parts
IPC: A43D49/00
Filed: 1938-09-14
Abstract: 519,073. Shoe-trimming machines. BRITISH UNITED SHOE MACHINERY CO., Ltd., and SHEFFIELD, C. C. Sept. 14, 1938, No. 26758. [Class 17 (i)] An inseam trimming machine of the kind described in Specification 112,808 is provided with means for adjusting the knife transversely of the line of work feed, so that the inclination of the trimming cut may be varied. The frusto-conical cutter 5 is driven by a gear 29 secured to the cutter, and a train of gearwheels on shafts 33, 37, 41. The gear 29 and cutter are carried by a block 3 adjustable transversely of the axis' of the cutter by a screw having a head 21. The shafts of the driving train are carried by a block 1, these two blocks being adjustable as described in the prior Specification. Transverse adjustment of the cutter makes it possible to make a cut inclined to the sole, the stitches in the channel being nearer the last than those securing the welt. The adjustment does not take the wheel 29 out of mesh with its driving gear. Specification 112,808, [Class 17 (i)], is referred to.
Patent GB-318018-A (GB)
Title: Improvements in or relating to conveyors or the like
IPC: B65G39/16
Filed: 1928-09-18
Abstract: 318,018. Higgins, M. F., and Nyborg, T. G. Sept, 18, 1928. Band-retaining devices.-One end of the belt supporting roller p is mounted in a sliding block q adapted to be displaced by a threaded rod h which is rotated by gearing e, g, or f, g when the belt tends to run out of alignment. The gears e, f are mounted on an axially slidable shaft c carrying discs c<1>, c<2> against one of which the belt bears when displaced.
Patent GB-1306757-A (GB)
Title: Code carrying devices
IPC: G01R31/26
Filed: 1971-04-19
Abstract: 1306757 Testing printed circuit boards PHILIPS ELECTRONIC & ASSOCIATED INDUSTRIES Ltd 19 April 1971 [15 April 1970] 26764/71 Heading G1U [Also in Division G4] A printed circuit board E, Fig. 2 is provided with a plurality of binary coding elements to effect recognition thereof at least a plurality 19-26 of which are electrical contact connected to one of two in puts 17, 18, a further plurality 27-30 being of a photo-electric type, the coding elements further comprising an electrical impedance 35 between an input terminal 17 and a further contact 33. A further impedance 36 may be connected to the other input 18 and the contact 33. Upon application of a power source, the contacts 19-26 provide a digital indication, and the impedances 35, 36 provide an analogue signal. The apparatus of Fig. 3 may be employed wherein the circuit board 49 comprising a circuit 39, binary and analogue code elements 38, 40 respectively, is coupled with power sources 42, 28, a decoder 43 for the digital part and a measuring device for the impedance 40 which is coupled to an A/D converter 44, the outputs at 43, 44 being combined at 45 as input to a unit 46 which is adapted to select one of a plurality of testing programmes required for the particular circuit 39. Thus boards of different types may be tested unsorted.
Patent GB-722816-A (GB)
Title: Improvements relating to precision casting by the lost-wax process
Inventor: TURNBULL JOHN STRATTON
IPC: B22C9/04
Filed: 1951-11-15
Abstract: 722,816. Moulds; moulding processes. METROPOLITAN - VICKERS ELECTRICAL CO., Ltd. Nov. 6, 1952 [Nov. 15, 1951], No. 26795/51. Class 83 (1). A process of precision casting comprises providing a wax pattern with a multiplicity of superimposed dip coatings so that the pattern is invested with a shell of refractory material of substantial thickness, e.g. “ to ¢ inch, removing the wax pattern from the shell by means of the hot vapour of a solvent and surrounding the shell with a mass of dry refractory material, e.g. dry sand and fire-brick grog with or without a fritting agent. The wax is removed by a solvent, e.g. trichlorethylene vapour or steam, and the shell may be provided with a sprayed-on initial coating of, e.g. zirconium silicate powder used with a bonding agent consisting of, e.g. ethyl silicate, methylated spirits, hydrochloric acid and water, or a dipped coating of, e.g. silica flour used with the same bonding agent. Other usable refractory materials are sillimanite, alumina and molochite, and bonding agents sodium silicate, cement or plaster of paris. The composition of the initial coat is chosen in accordance with the surface finish required of the casting and the metal to be cast. When the initial coat is dry the shell is produced by repeated dipping in the refractory slurry, a stucco of coarse grained refractory, e.g. crushed fire-brick, being applied after each dip, until the desired thickness is reached. The drying of each coat may be accelerated by the use of an accelerator, e.g. ammonia vapour or magnesium oxide, or by placing the pattern after each coat in an air stream, e.g. in a wind tunnel. The refractory slurry may comprise a dry mixture of silica sand and flour mixed with the above bonding agent. When the shell is completed and the wax removed, it is placed in a mould box of heat-resisting steel and packed with the dry refractory material, the grain size of which is chosen according to the desired rate of cooling of the casting, and may also be varied through the mould to obtain progressive solidification of different parts of the casting. After casting, the shell may be removed by hammering or vibrating the runner. Specification 722,884 is referred to.
Patent GB-840047-A (GB)
Title: "improvements in or relating to free-piston engines"
IPC: F02B1/02
Filed: 1957-08-26
Abstract: 840,047. Free-piston engines; starting. JANICKE, H. Aug. 26, 1957 [Aug. 24, 1956], No. 26822/57. Classes 7(2) and 7(5). A free-piston engine is supercharged by compressed air supplied by a compressor 1 driven by an exhaust driven turbine 13. Compressed air from the compressor is conducted to outer return chambers and is used for starting the engine. As shown an electric motor 29 is used to drive the compressor at starting. The compressor supplies air to piping 8, 9. When the pressure reaches a predetermined value a valve 16 opens and the air can operate a piston 21 which opens valves 25, 251 controlling the supply of starting air to the return chambers 28, 28<SP>1</SP>. A pressure retaining valve 14 is included in the exhaust passage 12. It is stated that the pressure retaining valve is inoperative during starting. It may be omitted if desired. The engine drives pairs of hydraulic pumps 4, 41. It is possible to use hydraulic or pneumatic starting means instead of the electric motor 29. When using an electric motor the shaft of the motor is displaced and its pinion is brought into engagement with a gear 31 as in motor vehicles.
Patent GB-1302071-A (GB)
IPC: H04L1/18
Filed: 1970-06-04
Abstract: 1302071 Data transmission WESTERN ELECTRIC CO Inc 4 June 1970 [6 June 1969] 26964/70 Heading G4A [Also in Division H4] Data and idle (i.e. space filling) words are assembled at a transmitting station into data blocks together with a status word indicating which positions in the block relate to data words and which to idle words, the latter being stored and subsequently compared with error data sent from a receiving station so that the parts of the transmitted block which were erroneously received may be marked for retransmission while the storage space in which correctly received information was held is cleared.  As described the system comprises a central office which includes a data processor 300, trunk channel terminals 106 and 206, common signal channel terminals 108 and 208, and two remote offices A and B, the connections between the remote offices and the central office over the signal channels 1-1024 and 2001-3024 being controlled by the channel 1089. General description.-Connected to the common channel in the central station are a number of message buffers and a status word register which stores a word giving the location in the transmitted block of words contributed by high and low priority messages each of which may consist of one or more words as well as the location of data and idle words. The acknowledgment word received at the central station from one of the remote stations in response to a transmission over the common channel is examined to determine whether the transmission contained any errors. If errors were indicated the acknowledgment word and the high priority status word are compared, e.g. by product masking, to obtain an error control word indicative of the position in the transmitted block of erroneously received data words, idle words being ignored. The appropriate message buffers containing erroneously received words are then marked for retransmission and the remainder, i.e. those containing only correctly received words, cleared. The marking may be included in the retransmission to ensure high priority treatment at the remote station. A similar procedure is then initiated in respect of the low priority buffers. The system may be used to control telephone line connections, the high priority buffers being used for answer supervision and the low priority buffers for initiating new connections. Multiword transmissions.-In the case where a multiword message extending over a number of blocks is to be made the message buffers are not cleared until receipt of the acknowledgment word corresponding to the last block forming a part of that message at the central station. Further details.-The central control system, Fig. 2 (not shown), is as described in the "Bell System Technical Journal", September 1964, pages 1845-1959. The Specification contains a detailed description of the instructions used in the processor and states that Hamming and parity bits may be used for error determination.
Patent GB-503098-A (GB)
Title: Improvements in and relating to foldable supporting stands
IPC: E01F9/012
Filed: 1937-10-05
Abstract: 503,098. Foldable stands. MARTINDALE ELECTRIC CO., Ltd., and JOHNSON, H. L. K. Oct. 5, 1937, No. 27000. [Class 52 (iii)] In stands having foldable legs pivoted to. a slider movable along a normally vertical member of the stand, and a spreader slidably receiving the legs and defining their limit of splay, means are provided cooperating with the spreader for locking the legs in the splayed condition. A central vertical standard 7 to which a sign may be clipped is supported on a stand comprising three legs 8, 9, 10 pivoted to the underside of a slider 11 on the standard. The free ends of the legs are passed through holes 12 in the spreader 13 fixed to the lower end of the standard so that when the stand is picked up by the standard 7 the slider 11 falls down until it is stopped by the spreader 13. The holes 12 are inclined so that the legs are splayed as they fall. To lock the legs in the fullysplayed condition a rotatable cam member 14 mounted on the spreader 13 and provided with radial slots 16 is turned by a handle 15 to bring the slots out of register with the legs and cause cam parts 21 to engage the insides of the legs. To collapse the stand the cam member 14 is turned to bring the slots 16 into register with the legs and the stand is lifted by handles 17 on the slider 11 so that the.legs collapse during the lifting. The top of the standard 7 has sockets 19 for flags and a hook 20 adapted to receive a ring or clip engageable under one of the handles 17 for retaining the stand in the folded condition. A modified stand of trestle type supported by two folding legs 25, 26, Fig. 6, at each end of a rectangular frame including uprights 23 has the legs pivoted to a slider 24 on the upright and passing through inclined holes in a spreader 27 fixed to the bottom of the upright. For locking the legs in the splayed position shown a clip 29 pivoted to the slider 24 is engaged under the spreader 27. This clip may also engage lugs. at the upper end of each upright to maintain the stand collapsed.
Patent GB-362525-A (GB)
Title: Improved ash tray
IPC: A24F19/00
Filed: 1930-09-10
Abstract: 362,525. Smokers' ash-trays. CAMPBELL, G. 0., Glebe House, West Grinstead, Horsham, Sussex. Sept. 10, 1930, No. 27059. [Class 130.] A cigarette rest for an ash-tray consists of one or more sheet - metal strips 2 having V- shaped notches 4, the edges of which are convex, corrugated, serrated or roughened. The base may be retained on the tray by a rubber-suction device, or the strips may be mounted in upright guides 6 at each edge of the tray. Open wire frames may replace the sheet-metal strips.
Patent GB-1237591-A (GB)
Title: Improvements in or relating to bearings
IPC: C08L91/00
Filed: 1968-06-06
Abstract: 1,237,591. Lubricants. OILES KOGYO K.K. 6 June, 1968 [19 April, 1968], No. 27076/68. Heading C5F. [Also in Divisions C3 and F2] A solid lubricant comprises particles of a hydrocarbon lubricating oil or wax, dispersed in a resin. The resin may be a polyacetal or polyamide. The resin may contain up to 5% of graphite, MoS 2  or a soap e.g. lithium stearate, in solid particulate form.
Patent GB-1381984-A (GB)
Title: Rotary positive-displacement internal combustion engine
IPC: F01C1/44
Filed: 1972-06-12
Abstract: 1381984 Rotary positive-displacement engines M YOKOI and Y YOKOI 12 June 1972 27279/72 Heading F1F An I.C. engine has a hollow rotor 2 lodged in a stationary casing 1, fixed to an output shaft 13 and furnished with an oscillating pistonmember 19, which pivots on an axially-orientated pin 20, co-operates with a rectangular opening in the rotor peripheral-wall 14 and is coupled by a rod 21 to a crank-shaft 17 supported by the rotor side-walls 11, 12. Gears 18, 27 connect the crankshaft to a gear 28 meshing with an internallytoothed gear 10 fixed to the casing. A port 24 in the wall 11 connects sequentially inlet and outlet ports 7, 8 in the casing side-wall 4 to the working space on the radially-outer side of the member 19 as the rotor revolves. Ignition is effected by a plug 26.
Patent GB-1261117-A (GB)
Title: Two-wire former
IPC: D21F9/00
Filed: 1969-05-29
Abstract: 1,261,117. Papermaking. BELOIT CORP. 29 May, 1969 [25 June, 1968], No. 27347/69. Heading D2A. A paper-making machine comprises, in combination, successive first, second and third guides, and first and second forming belts. The first and second belts are arranged to travel, respectively, over the first and second guides through initially close spacing, the stock flow being there introduced between the wires; immediately thereafter they travel through gradual convergence and into general parallelism with the web in between, and are maintained parallel as they travel over portions of the first and second guides towards the third guide, over which at least one of the runs travels. The first guide is a non-circularlycurved stationary water-permeable surface defined by the locus of a multiplicity of closelylongitudinally-spaced belt-contacting, transverse edges; and the second guide is a rotary member with an open, water-receiving periphery about which the second run is wrapped during the forming zone. As shown, the first member 15 is formed from blades 15a, 15b, 15c, 15d and 15e, with preferably more than 50% open area. The blades may be mounted for adjustment either individually (e.g. 15bb) or collectively (e.g. 17bb). The locus of the wirecontacting edges may be of from H=CD<SP>k</SP> where H is the distance in inches between the wires, D is the distance from the stock inlet, and C and K are constants, C being from 0.5-1.6, and K from -0.2 to -0.8, depending on circumstances. The second guide may be a suction roll, with the particular suction shell configuration shown. A flexible headbox nozzle J is provided to seal the inlet of stock with wires 11 and 21. Lips J-1 and J-2 are resilient, e.g. of rubber, and plates J-3 and J-4 are metallic to provide stiffness. The head-box is adjustable to allow movement of the direction of the centre-line of flow, C L  to alter the ratio of drainage through the first and second members. The belts may be of synthetic materials e.g. nylon, and a saveall and a foil may be provided (Fig. 1B, not shown). The formed web may be picked up from one of the belts, after the other has been removed by the third guide, which may be a solid roll, by means of a felt, and carried by the felt through a wet press between a plain and a grooved roll, pressure being applied by a third roll contacting the grooved roll (Fig. 4B, not shown). The headbox may also be inclined to direct stock upwardly (Fig. 4A, not shown).
Patent GB-1195348-A (GB)
Title: Precision Locating Means for Machine Tools
Inventor: JONES GORDON H
IPC: B23Q16/04
Filed: 1969-05-29
Abstract: 1,195,348. Indexing. GIDDINGS & LEWIS Inc. 29 May, 1969, No. 27353/69. Heading B3B. A locating pin assembly for a pair of relatively movable machine tool elements such as an index table 10 and base 11, comprises a shot pin 16 mounted in the base 11, means 21, 22 for moving the pin 16 into a bushing 17 mounted in the table 10, the pin and bushing having tapered precision locating surfaces 40, 41 and the pin 16 having a smaller diameter pilot portion 45 the length of which is such that engagement of the precision locating surfaces 40, 41 is prevented unless the pilot portion is entered into a pilot bore 42 in the bushing 17 thereby giving a preliminary location to the table 10. Electrical interlock means comprising a switch 51 prevent the supply of air to the cylinder 22 for operation of the locating pin 16 until the table 10 and base 11 are in sufficiently accurate relative registration for the pilot portion of the pin 16 to enter the pilot bore 42. The switch 51, together with a spring loaded plunger 54 and switch operating arm 62, is mounted in a recess 53 in the base 11 and is operated by movement of the plunger 54 when a recess 60 in a flange of the table 10 moves into alignment with a roller 57 on the end of the plunger 54.
Patent GB-299602-A (GB)
Title: Improvements in and relating to internal combustion engines
IPC: F02B75/02
Filed: 1928-07-12
Abstract: 299,602. Johnston, J. W. July 12, 1928. Four-stroke-cycle engines.-In a twin-cylinder engine the induction port i in the cylinder a and the exhaust port j in cylinder b are controlled by sleeves valves a<1>, b<1>. The line joining the centres of the cylinders as seen in Fig. 2 is at an angle to the crank shaft axes x, x so that the connecting rods which work on one crank pin a<4> are not excessively inclined at the commencement of the power stroke.
Patent GB-1435533-A (GB)
Title: Back rest for recreational purposes
IPC: A47C9/10
Filed: 1973-06-08
Abstract: 1435533 Backrest J B SMITH 30 Aug 1974 [8 June 1973] 27428/73 Heading A4J A backrest (e.g. for standing on a beach) comprises two substantially rectangular frames 1, 2, hinged together at one end and spaced apart at the other end by a pair of stays 5 inter-connected by a rod 7. The rod engages one of the notches 8 in the errected position but may be used as a carrying handle when the device is folded down. In the folded condition the frame 2 rests within frame 1.  The backrest surface may be of slats 3, or natural or synthetic sheet or net or may be a  lashed construction of leather or other thongs. The frame may be wood metal or plastics or a combination of materials.