baber/WOPTO huggingface dataset:
Patent GB-945796-A (GB)
Title: Improvements in or relating to devices for use in the preparation of thermoplastic synthetic materials for moulding
IPC: B29B13/02
Filed: 1960-04-11
Abstract: 945,796. Preheating plastic materials. PHILIPS ELECTRICAL INDUSTRIES Ltd. April l1, 1960 [April 14, 1959], No. 12826/60. Heading B5A. [Also in Division H5] A device for preheating a thermoplastic synthetic material preparatory to moulding by blowing a heated gas through a predetermined amount of the material comprises a circular table rotatable intermittently in a horizontal plane and provided with an even number of recesses uniformly distributed about its circumference a stationary cover over the table having the same number of openings as there are recesses so arranged as to coincide with the stopping places of the recesses and a fixed blower for blowing heated gas through at least one of the openings to the material in a recess. In one position of the table the gas may flow vertically through the material in one of the recesses in one direction whereas in one of the subsequent positions the gas is blown vertically through the same material in the opposite direction. When adapted for use in the manufacture of polyvinylchloride acetate gramophone records, the table 14 which rotates inside a stationary box 2 (Fig. 4) may have six stopping positions a-f, and six recesses 15-17 and 19-21, the first three recesses being for the preheating of the polyvinylchloride acetate in granular form and the latter three for the preheating of the labels in two cassettes 23, 24, the labels in one cassette facing the opposite way to those in the other. The recesses 15-17 are filled at position f with the polyvinylchloride acetate which is heated at position a, allowed to cool at position b, heated again at position c, and removed at position d by means of a piston-type expelling device. The recesses 19-21 containing the cassettes with labels are heated at positions a and c, allowed to cool at positions d and f, and have two labels removed, one from each cassette, at position e. At positions a and c, heated air is blown through the recesses from the feed pipe 4 of the device shown in Fig. 6, in which device the air passes through filter 29 and past two electric heating elements 30 from whence it flows around the fixed conical body 32 to the gap between the valve seat 34 and the sealing edge 36 of the movable valve 35. This gap is closed by the action of a spring 37 unless air under pressure is admitted to duct 38 whence the valve 35 moves to the right until stop 39 abuts the fixed pin 40. Much less hot air is required for heating the labels than the plastic and this is provided with the gap closed, orifices 41 in the valve 35 allowing sufficient air to pass through to. the feed pipe 4. The outlet end of feed pipe 4 is provided with means enabling it to be held in air-tight engagement with the edge of a recess. Recesses 15-17 are closed at the bottom by means of perforated steel plates 18 which lie loose in the recesses while recesses 19-21 also have perforated bases 25 but these are rigidly connected to the table 14 (Fig. 5).
Patent GB-201656-A (GB)
Title: Improvements in stroboscopic apparatus
IPC: G01P3/40
Filed: 1922-05-06
Abstract: 201,656. Ashdown, A. J. May 6, 1922. Stroboscopic apparatus.-A shutter to be placed between' the observer and the moving object produces periodic total obturation by a movement of parts much smaller than any distance across the full aperture of the shutter. Fig. 1 shows in open position a shutter consisting of circular end plates 1 connected by spaced parallel strips 4, vision taking place through the spaces between the plates 4 and obturation being effected by rotation about an axis perpendicular to the planes of the end plates 1. Fig. 4 shows a shutter 12 with an axial spindle 13 with means for driving by hand or from a flexible shaft. Clockwork or electric motors may also be used for driving the shutter.
Patent GB-582259-A (GB)
Title: Improvements in hydraulic pumps
IPC: F04B49/12
Filed: 1944-07-06
Abstract: 582,259. Eccentrics. FITZPATBICK, H.D. (Midwest Hydraulics, Inc.). July 6, 1944, No. 12912. [Class 122 (i)] [Also in Group XXVIII] An adjustable eccentric 41 secured to a rotatable shaft 35 of an hydraulic pump (see Group XXVIII) to reciprocate the pistons thereof is transversely displaced by means of oppositely tapered wedges 43, 44, themselves axially displaced by a sleeve 50 rotatable with the shaft 35 and which wedges have shoulders 52 projecting into a recess 51 of the sleeve 50. The sleeve 50 is disposed within another sleeve 53 itself manually rotatable in threaded engagement with a fixed tubular member 55.
Patent GB-1497348-A (GB)
Title: Spacers for the connection of formwork plates in making site formwork elements
IPC: E04G17/065
Filed: 1975-03-27
Abstract: 1497348 Formwork spacers K LIEDGENS 27 March 1975 [28 March 1974] 12915/75 Heading E1S A formwork spacer comprises an elongate spacing portion 1 pivotally connected at its ends by flexible hinges 2 to formwork panelengaging portions 4, 5, the whole spacer being made in one piece from synthetic plastics material. The spacing portion 1 may be of flat bar form, with openings 12 for concrete to flow into in use, and reinforcing ribs 13, 16 around the openings and along the edges of the bar. The panel-engaging portions 4, 5 may each comprise a plate 6, 7 to abut the panel and a spigot 8, 9 to extend through an aperture in the panel; the spigots 8, 9 may each be externally screw-threaded to receive a securing nut, or have an internally threaded axial bore to receive a securing screw, or have a transverse hole to receive a securing pin. In use, a formwork element can be made up of two opposed parallel panels connected by several spacers, and can be transported in a collapsed state, as the hinge axes are parallel.
Patent GB-797967-A (GB)
Title: Bulk separation of arsenic from germanium
IPC: C01G17/00
Filed: 1956-04-27
Abstract: Germanium is separated from zinc and arsenic by neutralizing an acid solution containing these values, with ammonia to raise the pH to 8-10, thereby precipitating germanium oxide.  Separation from dissolved fluorine values is also attained and this is enhanced by the addition of minor amounts of borates or boric acid to the initial acid solution.  Gaseous or aqueous ammonia may be used and the precipitate may be redissolved in a mineral acid and reprecipitated. The residual ammoniacal solution after separation of the precipitate may be neutralized with acid to a pH not below 7 in one or more stages to precipitate further germanium which may be separated, redissolved and reprecipitated.
Patent GB-1253401-A (GB)
Title: Improvements relating to regulating devices for hydraulic circuits such as fan drives
IPC: F01P7/04
Filed: 1969-03-12
Abstract: 1,253,401. Hydrostatic transmission. M. BEHR, [trading as SUDDEUTSCHE KUHLERFABRIK JULIUS FR BEHR]. 12 March, 1969 [13 March, 1968], No. 12982/69. Heading F2D. An hydrostatic drive for a cooling fan comprises a pump 1 and a motor 2 driving the fan, and a pressure relief valve 6 by-passing the motor 2, the response pressure of the valve 6 being automatically adjusted by the pressure at the motor output to control the motor, and the adjusting pressure being fed to the valve 6 through a valve 3 which is itself controlled in accordance with temperature and/or the working point reached. As shown in Fig. 1a, a restricted orifice 42 is provided in the pump/ motor return line, and the valve 3 is electromagnetic and controlled by a temperature switch 5 and a load stage switch 10. As shown in Fig. 2, high pressure 7 from pump 1 is delivered to connection 11 in valve 6 and acts on a spring-biased piston 13. The valve also includes a pilot valve 37 biased to a closed position by a spring 36 seated on a piston 35 which is itself biased upwards by fluid pressure in a chamber 40. The pressure in chamber 40 is the pressure of the motor output and is connected from the return conduit 19 via a line 41 and the electromagnetic valve 3. With the valve 3 closed, i.e. at low temperatures &c., no adjusting pressure is present in chamber 40, and fluid flow through an orifice 14 in piston 13 forms a pressure differential across the piston to move the piston down directly connecting the delivery and return conduits 11, 19 and the lines 7 and 8 so that the fan motor does not rotate, With rising temperature, or at a higher working stage, the valve 3 is opened so that return pressure is directed to chamber 40 to close the pilot valve 37 through piston 35 and spring 36. With the pilot valve closed flow through the orifice 14 decreases allowing the piston 13 to move up cutting-off direct communication between lines 7 and 8, and the motor begins to rotate to drive the fan. Again, Figs. 3 and 4 (not shown), the piston 13 is mounted in the valve block at right angles to piston 35 and pilot valve 37, and the electromagnetic valve is mounted directly on the valve block. Also, Fig. 5 (not shown), the valve 3 is replaced by a piston valve (43) which is itself responsive to the pressure on the output side of the motor to connect this pressure to the chamber 40.
Patent GB-909741-A (GB)
Title: Cartons for packaging cigarettes or the like
IPC: B65D5/72
Filed: 1959-04-16
Abstract: 909,741. Cigarette cartons. TAMARIN, B. J. April 16, 1959 [June 19, 1958], No. 13048/59. Class 18. In cartons having an opening 44 for access to the cigarettes, exposed by retracting a slide 23 by a thumb piece 25 hinged to the wall 5 by a panel 5p, one or more wings such as 6s are provided to cover the triangular gap which would otherwise be left between the edge of the sides 2, 3 and the parts 25, 5p when the slide is retracted. The carton is folded up from the blank shown, the slide being covered by the end wall 24, and the flap 6 being stuck at 2a to the side 2 while the port 6s is left free to slide behind the side 2. The tab 23 -  is attached along a perforated line 27 to the wall 3 and is stuck at 23a to the thumb piece 25, which has indentations 31. The wing 6s may have an ear formed in it for co-operation with a slit provided along the score line 26, the ear being held in the slit when the slide is in its fully open position. The other triangular gap may be closed by a triangular wing at 47. The blanks may be folded around a hollow mandrel containing the cigarettes. Specification 832,446 is referred to.
Patent GB-730388-A (GB)
Title: Process for the manufacture of foundry pig iron
IPC: C21C1/00
Filed: 1952-05-22
Abstract: Foundry pig iron is produced from low grade pig iron of low carbon and manganese and high sulphur content by charging low grade iron produced in a blast furnace into a hot blast, basic or neutral, cupola furnace, operating under reducing conditions with more fuel and slag than are used in normal cupola operation, alloying elements being added if required, and heating the iron to 1450-1600 DEG  C. before casting.  The cupola charge may also contain iron or steel scrap.  The alloying elements may be added as ores, oxides, or slags. The gas produced in the cupola may be used to heat the blast.
Patent GB-473878-A (GB)
Title: Improvements in or relating to acoustic devices
IPC: H04R1/08
Filed: 1937-05-07
Abstract: 473,878. Sound-reproducing devices; microphones. STANDARD TELEPHONES & CABLES, Ltd. May 7, 1937, No. 13106. Convention date, Sept. 9, 1936. [Class 40 (iv)] In an acoustic device comprising a diaphragm in a casing provided with an apertured portion in front of the diaphragm for the passage of sound waves, the possibility of injury to the diaphragm is reduced by the provision of raised portions disposed on said apertured area. As shown, the invention is applied to a moving-coil transmitter in which the magnetic assembly 20 and diaphragm 24 are located near the perforated end of a cylindrical casing 19 by a screwed ring 27. The raised portions are formed by three radial ribs 42 which extend across the area having the perforations 16. The normally open end of the casing is occupied by a plate 29 held by a screwed ring 30 and carrying a terminal block for connection of pins 31 to the lead 32, and to leads 33 passing into a cord member 34 in a hollow plug 35. A chamber 37 communicates with the atmosphere through a gap 36 between the plug 35 and a cap member 13 and with a chamber 38 within the casing by means of a tube 39 of soft rubber terminating in a hole (not shown) in the plate 29. The chamber 38 communicates with the space at the rear of the diaphragm 24 by a gap (not shown) in the magnetic assembly 20. The inner surface of the perforated portion may be covered with a thin strip 17 of fabric and the chamber 38 may be filled with loose cotton, wool or felt.
Patent GB-1260993-A (GB)
Title: Process for obtaining (+-)-trans-chrysanthemic acid
IPC: C07C51/487
Filed: 1970-03-18
Abstract: 1,260,993. Chrysanthemic acids. SUMITOMO CHEMICAL CO. Ltd. No. 13135/70. Heading C2C. ()Trans chrysanthemic acid is obtained from a mixture with the () cis acid by treating the mixture under non-aqueous conditions with an acid catalyst (e.g. BF 3 , SnCl 4 , FeCl 3 , ZnCl 2 , H 2 SO 4 , H 3 PO 4 , p-toluene sulphonic acid or CF 3 CO 2 H) to convert the cis acid into () chrysanthemolactone, subjecting the reaction mixture to extraction with aqueous alkali and treating the extract with an acid to recover the ()trans acid.
Patent GB-197944-A (GB)
Title: Improvements in internal combustion engines
IPC: F02B75/26
Filed: 1923-05-17
Abstract: 197,944. Lind, A. May 18, 1922, [Convention date]. Valves.-In an engine of the type in which cylinders parallel to the shaft and having one end forming a pump chamber are provided with pistons reciprocated by swash-plate mechanism, the passage of mixture from a charge-forming chamber to a storage reservoir, and from the reservoir to the combustion chambers, is regulated by a rotary valve. Air and fuel enter the chargeforming chamber 16 by passages 17, 18 respectively and are drawn into the pump chambers 4 through a passage 21 in the rotary valve 19 and ports 22, 23, and towards the end of the suction stroke, further air is drawn into the pump chamber through ports 26, 23. On the return stroke of the pump, the mixture is forced through port 23, valve passage 24, and passage 25 to the central storage reservoir 20, from which it passes to the combustion chambers 2 by passages 29. The valve 19 is pressed against its seating by a resilient washer 27. The Specification as open to inspection under Sect. 91 (3) (a) describes a modification in which the valve 19 is conical. This subject-matter does not appear in the Specification as accepted.
Patent GB-132282-A (GB)
IPC: F02B75/18
Abstract: 132,282. Anzani, A. March 16, 1917, [Convention date]. Four-stroke-cycle engines. - Radial cylinders are arranged in groups of four in four or six parallel planes, the pistons of each group being connected to a common crankpin.
Patent GB-179943-A (GB)
Title: Improvement in or relating to dry fire-extinguishing apparatus
IPC: A62C13/66
Filed: 1922-05-10
Abstract: 179,943. Total-Ges., (formerly Deutsche Total Ges.). May 10, 1921, [Convention date]. Addition to 174,616. Fire - extinguishing by pulverulent material.-Relates to detail improvements in the fire-extinguisher described in the parent Specification, wherein a fire - extinguishing powder is discharged by means of compressed gas. The cover 11 is secured by fastenings of the bayonet type comprising studs 17 fixed to the top of the container and engaging key-hole slots in the cover 11, which is rotated to engage the studs with the narrow parts of the slots. The studs 17 also secure the upper outturned ends of the strips 4 forming the cage for the gas-bottle 3 The cover 11 is provided with an upturned roughened operating-rim 14, and partly covers the safety valve. The rotary key 8 for releasing the gas has a cross-pin 9 engaging a vertical slot in the cylindrical head 6 of the gas valve. Pins 5 on the bottle 3 prevent it from rotating by engaging the strips 4 of the cage. The bottom 25 of the container is hemispherical, and is provided with a cavity 26 in which is located the discharge nozzle 2, which is normally closed by a cap 28, held in position by a side spring 29 and adapted to be blown aside when the powder is discharged. The string of a seal is passed through holes in the hand-wheel 9<1>, the rim 14 of the cover, and a projection on the container, such as the spindle of the safety valve.
Patent GB-437812-A (GB)
Title: Improvements in variable speed hydraulic power transmission gears
IPC: F16H61/40
Filed: 1934-05-02
Abstract: 437,812. Hydraulic transmission of power. SMITH, F. L., and SMITH, R. J., 2, Alexandra Villas, Burton Road, Littleover, Derbyshire. May 2, 1934, No. 13238. [Class 69 (ii)] A variable - speed hydraulic transmission gear comprises a pump having sections in parallel, one or more of the sections having a byepass valve operated automatically through snap - over mechanism. Other sections have a manually controlled byepass valve. The pump may be of the type described in Specification 433,488, [Group XXVI], and comprise sections a, b, c, Fig. 6, the section a having a byepass valve i, and the sections b, c having a valve manually operable to byepass one or both of the sections. The valve i is controlled from a piston s by a rod o, and snap-over mechanism comprising a wedge r, Fig. 2, and a spring-loaded plunger u; the pump delivery pressure acts on the piston s in opposition to a spring v and the liquid pressure on a piston w. The pressure on the piston w is determined by adjusting a spring 24 and so controlling a valve 13 to admit or release liquid to act on the piston.
Patent GB-724733-A (GB)
Title: Overload release devices for hydraulic bending presses
IPC: B21D55/00
Filed: 1953-05-12
Abstract: 724,733. Hydraulic machines. RHODES, C. J. May 12, 1953, No. 13250/53. Addition to 706,320. Class 69 (2). [Also in Group XXII] A machine for bending or shearing according to the parent Specification comprises an adjustable stop 24 on the operating rod 3, which is engageable with a fixed abutment 25 to stop the operating piston in a selected position of the beam 1 and thereby create the excess pressure to cause the return of the beam. In an alternative construction a stop may be arranged in the path of the beam. Specification 640,605, [Group XXII], also is referred to.
Patent GB-853872-A (GB)
Title: Positive displacement fluid machines
IPC: F04C2/344
Filed: 1957-04-25
Abstract: 853,872. Rotary motors and pumps. BENDIX CORPORATION, [formerly BENDIX AVIATION CORPORATION]. April 25, 1957 [May 7, 1956], No. 13260/57. Class 110 (2). A rotary pump or motor of the outwardlysliding vane type is provided with an accumulator chamber 36 which communicates with a groove 32 subjected to the output pressure of the device. The chamber 36 also communicates with a series of radial grooves 39 in the rotor 10 through a series of passages 38, the members 38, 39 being so positioned relative to one another that a particular groove 39 is connected to one of the passages 38 just before its associated working chamber 13 which is fed by the passage 39 is connected to an outlet port, see also Fig. 2 (not shown). The above arrangement eliminates pulsations and noise in the device. Specification 799,302 is referred to.
Patent GB-133254-A (GB)
IPC: F24H1/00
Abstract: 133,254. Mathy, M. March 18, 1919 Internally-fired boilers. - Water is heated by passing in counter-current to the flow of combustion products from a surface combustion burner 1 supplied with gas by a pipe 4 and with air by a fan 3 through the pipe 2. Water passes first through a nest of pipes 16 in the flue pipes 14, 15 and then through the annular space 12 surrounding the flue 6 to the draw-off pipe 9.
Patent GB-1423967-A (GB)
Title: Process for producing a wallpaper
IPC: D21H27/00
Filed: 1974-03-26
Abstract: 1423967 Prepasted embossed wallpaper LES PAPETERIES DE GENVAL 26 March 1974 [26 March 1973] 13338/74 Heading B2E [Also in Divisions B6 Dl and D2] A pre-pasted embossed wallpaper is made (a) by preparing a sheet by a papermaking method from a mixture comprising up to 90% by wt. of a cellulosic pulp and at least 10% by wt. of discontinuous fibrils of a synthetic polymer; (b) heating the sheet such that the temperature at its surface is at least equal to the temperature at which the fibrils become plastic; (c) embossing the heated sheet and (d) applying a layer of adhesive, which can be activated by water, to a surface of the sheet. The fibrils may be derived from one or more of the following polymers:-polyolefins, polyamides, polyesters, polyurethanes, polycarbonates, vinyl resins, acrylic resins.
Patent GB-133884-A (GB)
IPC: A63F9/02
Abstract: 133,884. Koppenhagen, J. Feb. 21,1919. Table games; outdoor games.-Relates to appliances for games of the kind in which balls or other missiles are thrown at stands carrying coconuts or imitations thereof enclosed by a back screen and side wings, and consists in attaching to the back screen numerals c, Fig. 1, each of which is behind one of the targets. The side wings fold flat against or parallel to the back screen. The stands e for the targets may be fixed to a separate base e', Fig. 1, or may be permanently attached to the back screen, Fig. 5. In a larger form of apparatus, Fig. 3, standards g clamped to a table by springs g<2> support the back screen and wings by means of eyes g<3>. The base-plate e' may also be clamped to the table by means of springs. For outdoor games the standard g has a heavy metal base and may have a central spike for insertion in the ground.
Patent GB-593269-A (GB)
Title: Improvements in the manufacture of target boards for games or sports, and target boards so produced
IPC: F41J3/00
Filed: 1945-05-29
Abstract: 593,269. Targets. DUNLOP RUBBER CO., Ltd., and VAUGHAN, G. May 29, 1945, No. 13389. [Class 132 (iii)] Target boards comprising a compressed assembly of short lengths of straw so disposed that the ends of the straw constitute the playing surface of the target are manufactured by bonding the straw with a molten waxy material.' In an example 5-6 lbs of straw is arranged with the reeds of straw parallel to each other, clamped together and treated in molten paraffin wax at 90‹C. After draining and while the wax is still hot the bundle is compressed in two directions normal to the direction of the straw to about 1/15th of its original volume. After cooling and solidifying the block is trimmed and cut into sections of a target, the straws in each section lying end on to the playing surface. The sections are united by insertion of thin metal strips between them and passage of a low tension current through the strips to melt the adjacent wax, and then, after removal of the strips, pressing the sections together. Boards so made may be treated by the process described in Specification 593,268. Boards so manufactured are double-sided. Specification 407,336 also is referred to.