baber/WOPTO huggingface dataset:
Patent GB-958059-A (GB)
Title: Improvements in or relating to reciprocating piston pumps
IPC: F04B49/24
Filed: 1961-10-16
Abstract: 958,059. Reciprocating pumps. SCHWEIZERISCHE LOKOMOTIV-UND MASCHINENFABRIK. Oct. 16, 1961 [Oct. 19, 1960], No. 37070/61. Heading F1A. In a reciprocating piston pump a control valve 20 has ports 23, 24, Fig. 1, which are associated with at least some of the cylinder chambers and communicate with the suction space 17, the position of the ports being adjustable relative to cylinder admission ducts 18, 19 to vary the flow cross-sectional area. At low operating pressure, the control piston 30 and control slide 20 are in the piston shown in Fig. 1 with ducts 18, 19 in register with ports 23, 24. At a predetermined fluid pressure in chamber 39, piston 30 moves control slide 20 against spring 27 thus restricting both the admission of liquid to the duct 18 and the delivery of the five large diameter plungers 8, whilst delivery from the five small plungers 9 is unchanged. Further rise of pressure causes the edge 32 of piston 30 to close duct 36 so that piston 30 is moved suddenly to its upper abutment causing slide 20 to close ports 18 completely and plungers 8 to cease delivery. Pressure in space 40 is relieved through ducts 37, 37a and 37b. The control slide 20 may be constructed to operate the large plungers when it is in its uppermost position and all plungers may be the same diameter. In a modification, a smaller piston may be mounted within piston 30 to move the control slide further upwardly to restrict admission to some or all of the small diameter cylinders. Either piston 30 or the smaller piston may be carried through cover 45 to provide for manual actuation of the control slide. In a further modification, a plurality of springs which operate simultaneously or one after the other, may replace spring 27. In a further embodiment the control slide is replaced by an annular control valve 50, Fig. 4, which is rotated by a piston 61, Fig. 5, connected by conduit 64 to pressure chamber 56. Control valve 50 has ports 71 . . . 82 of differing size communicating with spring loaded inlet sleeves 51 so that not all sleeves 51 are cut out at the same time. When the smaller control ports are closed, pressure acting on rod 85 raises piston 84 to bring opening 89 in communication with duct 87 so that any liquid still present in the cylinders is discharged through ducts 87-90 past a rubber non-return valve 91. In a modification the control valve 50 may be manually operated by handle 67. In a further modification the control slide may vary the supply to only some of the pump cylinders.
Patent GB-1022638-A (GB)
Title: Process for transforming acetonitrile
IPC: B01J23/887
Filed: 1962-10-01
Abstract: In the catalytic production of acrylonitrile together with acetonitrile and hydrogen cyanide from propylene, ammonia and air, the acetonitrile is separated from the other reaction products and recycled to the process, thereby increasing the yield of by-product hydrogen cyanide.  The mixture of reactants may contain 0.05-10% of acetonitrile and may also contain steam.  The catalyst may comprise one or more of thorium, molybdenum, vanadium, tin, chromium, tungsten, cobalt, iron, manganese, nickel, copper, bismuth, titanium, zinc, cadmium, silver, gold, lead, niobium, tantalum, uranium, or cerium as the metal or oxide. The catalyst may be combined with phosphoric acid.  The catalyst may be supported on a carrier, e.g. silica gel, alumina, aluminium phosphate, boron phosphate, or pumice. The temperature of reaction may be 300-550 DEG  C.  The contact time may be 0.05-50 sec.  The catalyst may be in a stationary, fluidized or flowing bed.ALSO:In the catalytic production of acrylonitrile together with acetonitrile and hydrogen cyanide from propylene, ammonia and air, the acetonitrile is separated from the other reaction products and recycled to the process, thereby increasing the yield of by-product hydrogen cyanide.  The mixture of reactants may contain 0.05-10% of acetonitrile and may also contain steam. The catalyst may comprise one or more of thorium, molybdenum, vanadium, tin, chromium, tungsten, cobalt, iron, manganese, nickel, copper, bismuth, titanium, zinc, cadmium, silver, gold, lead, niobium, tantalum, uranium, or cerium as the metal or oxide. The catalyst may be combined with phosphoric acid. The catalyst may be supported on a carrier, e.g. silica gel, aluminium oxide, aluminium phosphate, boron phosphate or pumice.  The temperature or reaction may be 300-550 DEG C.  The contact time may be 0.05-50 sec.  The catalyst may be in a stationary, fluidized or flowing bed.ALSO:An oxidation catalyst may comprise one or more of thorium, molybdenum, vanadium, tin, chromium, tungsten, cobalt, iron, manganese, nickel, copper, bismuth, titanium, zinc, cadmium, silver, gold, lead, niobium, tantalum, uranium, or cerium as the metal or oxide.  The catalyst may be supported on a carrier, e.g. silica gel, alumina, aluminium phosphate, or pumice. The catalyst may be in a stationary, fluidized or flowing bed.
Patent GB-1466566-A (GB)
Title: Weighing apparatus
IPC: G01G13/29
Filed: 1974-07-10
Abstract: 1466566 Hoppers ISCA ELECTRONICS Ltd 10 July 1974 [6 Aug 1973] 37238/73 Heading B8S [Also in Division G1] Apparatus for continuously weighing fluid material comprises two hoppers 11, 12 (Fig. 1), alternately fed from a duct 13 via a selected chute 14, 15 as determined by the position of a gate 16 controlled by a pneumatic cylinder 17, and discharged through a respective outlet 20 controlled by actuators 21, the hoppers being supported by horizontal wires 30, 31, 35, 36 and 46. Each hopper is weighed by a loadall 40 located between a plate 41 carried by the hopper and a platform 42 secured to the housing 10. (For Figure see next column.)
Patent GB-1267385-A (GB)
Title: A method and apparatus for separating blanks from sheets or webs of flexible material
Inventor: ZUHLKE GERARD
IPC: B29C65/74
Filed: 1969-07-24
Abstract: 1,267,385. Cutting apparatus. ZUHLKE & BRANDLI A.G. 24 July, 1969 [5 Nov., 1968], No. 37301/69. Heading B5A. Blanks are separated from a thermoplastic sheet by tensioning the sheet, weakening it in a zone along the outline of the desired blank and then separating the part i.e. the blank within the weakened zone from the sheet. In Fig. 1 a light-reflecting web 40 is fed step by step by a motor 3 from a reel 2, and passes over a guide roller 8 and between intermittently driven rollers 9, 10, and is held under tension by a roller 6 on a pivoted lever 5 biased by a spring 7. Following a stepwise feeding of the web, a circular heated electrode 60, which determines the size and shape of the intended blank, is lowered and -forces the web against the top surface 66 and partially penetrates the web, Fig. 2. The blank, which is to form part of a dental mirror, is then separated from the web by the downward movement of a plunger 28 which carries a male part 52 of a mirror frame which forces the blank into a female part 51 located on a support 50. The plunger is carried by 'a yoke 22 'reciprocated by a motor 26 and crank mechanism 23-25 and guided vertically by posts 21. The electrode carrier 57 is received within an intermediate carrier 53 with the interposition of springs 58, and springs 55 are located between the carrier 53 and the yoke. The electrode '60 comprises an electric resistance heater.
Patent GB-1187095-A (GB)
Title: Dice Intended for Use in Board and Like Games.
Inventor: SPIRING JAMES CHRISTOPHER
IPC: A63F9/04
Filed: 1967-08-14
Abstract: 1,187,095. Playing dice. J. C. SPIRING. 16 July, 1968 [14 Aug., 1967], No. 37334/67. Heading A6H. A dice has a plurality of flat and relatively parallel opposite faces, some or all of which carry indicia related to a board or like game in such a way that the indicia denote at least one direction in which a playing piece may be moved on the board or like and in which the indicia on at least one face also denotes the number of steps which a playing piece may be moved in the indicated direction or one of the indicated directions on the board. The dice may be, for example, a cube or a regular dodecahedron.
Patent GB-506786-A (GB)
Title: Improvements in or relating to internal combustion free-piston compressors
IPC: F02B71/04
Filed: 1938-12-28
Abstract: 506,786. Controlling free - piston compressors. SULZER FRERES SOC. ANON. Dec. 28, 1938, No. 37600. Convention date, Feb. 8. [Class 8 (i)] In an internal-combustion free-piston compressor in which the compression or combustion pressure in the combustion chamber is communicated to a control member actuating a fuel pump or other device, the pressure chamber of the control member, and preferably also the passage leading thereto, are scavenged periodic-. ally by air or inert gas. The working cylinder 3 contains two pistons 1, 2 controlling respectively exhaust at 20 and inlet at 21 supplied from pump chambers 11, 12, the cylinder pressure' being led by a pipe 26 to a control piston 24 actuating a fuel pump 25 injecting fuel past a valve 8. The passage 26 and the cylinder of the piston 24 are scavenged by air or inert gas admitted under pressure at 30 past a check valve 31 during the scavenging period of the working cylinder. Alternatively, air or gas may be supplied periodically by means of engine-operated poppet or slide valves. Also, the passage 32 may be-arranged , to give the air or inert gas a whirling motion in the piston chamber 24.
Patent GB-1018148-A (GB)
Title: Improvements relating to heat-exchangers
Inventor: GREAVES BRYAN HAROLD
IPC: F22B13/00
Filed: 1963-09-26
Abstract: 1,018,148. Air and heating stoves. A. E. GREAVES & SON Ltd. Dec. 16, 1964 [Sept. 26, 1963], No. 37834/63. Heading F4S. In an air or other fluid heater having an outer casing 2 with a pair of parallel side walls 3, a cylindrical combustion chamber 4 is disposed between and spaced from a pair of exhaust flues 5, each flue having an arcuate inner wall 10, coaxial with the combustion chamber 4, and an outer wall 11 substantially parallel to and spaced inwards from a respective one of the casing side walls 3. Some of the fluid to be heated flows transversely over the combustion chamber 4 in the space 6 between the combustion chamber and the arcuate inner walls 10 of the flues and the remainder flows transversely over the flues in the passages 13 formed between the casing walls 3 and outer flue walls 11. The space 6 is provided with an inlet 7 and an outlet 8 on opposite sides of the combustion chamber. Each flue 5 is provided internally with vertically-spaced horizontal sheet-metal partitions 20 forming connected passages 5a and 5b. The outer wall 11 of each flue is provided with a cleaning access aperture 23 and a removable cover over each aperture. The end wall of each passage 5a is also provided with a covered cleaning access aperture. The conbustion chamber 4 is provided, at one end, with a liquid-fuel burner, the combustion gases from which pass through the chamber to the passages 5a, and return through the passages 5b to an exhaust outlet. In the air heater described, the air to be heated is forced through the space 6 and passages 13 by a fan (not shown) in a housing 18 below the chamber 4, and the heated air is taken off at a duct 19.
Patent GB-1070597-A (GB)
Title: Improvements in or relating to feeding rod-like articles
IPC: B65G47/14
Filed: 1965-09-06
Abstract: 1,070,597. Discharge of cigar bunches from hoppers. ARENCO A.B. Sept. 6, 1965 [Sept. 30, 1964], No. 37986/65. Heading B8S. Articles (e.g. cigar bunches) may be delivered from hopper 28 by a quadrant 14 formed with a central duct 24 so that as the quadrant oscillates the bunches drop through the duet one by one on to endless conveyer 6.
Patent GB-1112522-A (GB)
Title: Ambient integral pulse switching system
IPC: G05D23/24
Filed: 1965-09-06
Abstract: 1,112,522. Transistor switching circuits. RADIO CORPORATION OF AMERICA. 6 Sept., 1965 [25 Sept., 1964], No. 38026/65. Heading H3T. [Also in Division G3] A.C. through a load 22 is controlled by a silicon-controlled rectifier 24 whose trigger electrode 25 is supplied by a transistor-resistor path 26 in parallel with a similar path 28 across the rectifier 24. By suitable choice of the resistor values and with a half-wave voltage pulse building up across the paths, path 26 will conduct before path 28 and fire the rectifier 24, conduction of path 28 during this pulse thus being prevented. Alternatively the path 28 may be arranged to conduct first, thus preventing conduction of path 26 and firing of the rectifier 24. The circuit shown in Fig. 1 is used for temperature control by making the load 22 a heating resistance element and arranging for the resistor 48 in the path 28 to be temperature responsive, so that if the temperature is below a predetermined value the path 26 conducts first to energize the heater 22, and if the value is exceeded path 28 conducts first to prevent energization of the heater 22. Conduction of the paths is arranged to occur at a low applied voltage so that substantially complete half cycles (or cycles) of current are passed through the load 22. A capacitor 58 assists firing of the rectifier 24 by discharging through path 26 (into the electrode 25) when this path becomes conductive. In a modification, Fig. 2 (not shown), the load is supplied through two siliconcontrolled rectifiers connected back-to-back, their control electrodes being supplied from the secondary windings of a pulse transformer whose primary winding is connected to the parallel paths.
Patent GB-854161-A (GB)
Title: Starch ethers containing nitrogen and process for making the same
Inventor: PASCHALL EUGENE F
IPC: C08B31/12
Filed: 1956-12-13
Abstract: Ungelatinised nitrogen-containing starch ethers in unswollen granule form are prepared by reacting starch in the presence of a strongly alkaline catalyst with a secondary amine of formula NHR2R3 where R2 is alkyl, substituted alkyl, cycloalkyl, alkenyl, aryl or aralkyl and R3 is 2, 3-epoxypropyl or 3-halo-2-hydroxypropyl, or with a quaternary ammonium salt possessing the cation <FORM:0854161/IV(a)/1> where each of R4, R5 and R6 is alkyl, substituted alkyl, alkenyl, aryl or aralkyl, and R4 and R5 may form a ring, but if R4, R5 and R6 are the same, each should contain not more than 4 carbon atoms, the etherification being carried out under non-gelatinising conditions in the presence of a solvent, the amines being obtained by reacting an epihalohydrin with a primary or tertiary amine or tertiary amine salt.  Specified amines are the reaction products of epichlorhydrin or epibromhydrin with triethylamine, trimethylamine, dimethylbenzylamine, dimethyldodecylamine, dimethylstearylamine, tri-npropylamine, dimethylaniline, N-ethylpiperidine, N-ethylmorpholine, N-methyldiallylamine, 2-chloro -N, N-dimethyl ethylamine, benzylamine, cyclohexylamine, tertiary octylamine, 1-naphthylamine, allylamine, methylamine, N, N-dimethyl carboxyethylamine, and N, N-dimethyl p-chlorobenzylamine.  Specified solvents are water, dioxane and isopropyl alcohol.  Salts such as sodium chloride, sulphate and carbonate may be present.  Suitable alkaline catalysts are alkali metal hydroxides, alkaline earth oxides and hydroxides, and quaternary ammonium bases.
Patent GB-1125984-A (GB)
Title: Method and circuit arrangement for an associative storage
IPC: H04Q3/00
Filed: 1966-08-26
Abstract: 1,125,984. Associative stores. INTERNATIONAL STANDARD ELECTRIC CORP. 26 Aug., 1966 [28 Aug., 1965], No. 38412/66. Heading G4C. The addresses used for searching in an associative memory comprising a co-ordinate matrix store are stored in a p-out-of-q code and only those column wires corresponding to bits of one binary signification in the search address receive interrogation pulses. In the arrangement shown (Fig. 2), each row 2 of a magnetic core associative memory 1 stores in a portion 3 an address and in a portion 4 an associated data word or words, the addresses being stored in a binary p-out-of-q code (preferably a 3 out of 5 code). In operation, an address to be searched for in a register 14 opens those gates 12 corresponding to its binary 0 digits whereby q-p columns are connected for receiving an interrogation pulse from pulse generator 15. Those rows 2 in which there is a mismatch transmit a pulse to amplifier 7 for setting the corresponding stages of a register 10 to their 1 states. Only that row in which there is a match carries no pulse. The gate 8 corresponding to this row thus remains open to transmit a pulse from generator 11 to read the associated word or words from the portion 4 into an output register 18 via amplifiers 16. By duplication of the elements 12, 15 and 16, the store may be operated in either a forward (as described) or a reverse direction. The arrangement may be used as a translator in a telephone exchange by using known devices for converting from sequences of pulses to the p-out-of-q code and vice versa.
Patent GB-1367723-A (GB)
Title: Apparatus for the continuous mixing of granular materials
IPC: B01F7/02
Filed: 1972-08-17
Abstract: 1367723 Mixing apparatus PETTIBONE CORP 17 Aug 1972 [26 Aug 1971] 38476/72 Heading B1C  Mixing. Continuou discharge apparatus for mixing granular materials, e.g. foundry sand, comprises a pair o parallel contra-rotating shaft assemblies 21, 22 in a double trough 20 mounted on a turntable 14. Each shaft carries a plurality of penta-elliptical blades 72, 172 angled (with opposite but equal pitch on the two shafts) to feed the material towards the discharge end of the trough and arranged as shown so that they sweep the space between the shafts alternate y with substantially no overlap (see Figs. : 0, 11, not shown). The blades are mounted on hubs 74 which act as spacers and are keyed to the shafts. Each blade on receiving a mass of material severs it into two parts of which one is passed to a blade on the other shaft so that subdivision is progressive. The trough 20 is secured to supports 40 by toggle clamps 48. Catalyst and binder are fed to nozzles 92, 96 by pumps (P1, P2, Fig. 1, not shown) and solid from a hopper (32) through a fluid-actuated sliding gate (36). In a modification for reconditioning foundry sand the blades consist of three quadrants of an ellipse, whereby one quadrant interacts with the corresponding blade on the other shaft to produce a compressing and milling action, see Fig. 12 (not shown).
Patent GB-1344785-A (GB)
Title: Hydromechanical transmission
IPC: F16H47/04
Filed: 1972-08-18
Abstract: 1344785 Hydro-mechanical variable speed gear SUNDSTRAND CORP 18 Aug 1972 [18 Aug 1971] 38601/72 Heading F2D In a hydro-mechanical transmission with complementary mechanical and variable speed hydraulic drive paths to an output differential, one element of the differential is driven through one of the paths, a second element is an output member and third and fourth elements are selectively driven through the other path to provide alternative output speed ranges. In Fig. 1, the input shaft 12 drives a sun 23 of the differential 16 and, through gears 26, 27, a variable displacement hydraulic unit 31 delivering fluid to a fixed displacement unit 36. For a low ratio range, the hydraulic drive 32 drives, through a clutch 20 and gear 42, the ring 40 of the differential, the carrier 68 being secured to the output shaft 17 and supporting planets 72, 73. For a high ratio range, the clutch 20 is disengaged and the hydraulic unit 32 drives, through gears 37, 46 and a clutch 22, a sun 52 which engages planets 56, 57. The planets 56, 57 are mounted on the carrier 68 and engage the planets 72, 73. The arrangement is such as to provide forward drive in the low range and forward and reverse drives in the high range. In a second embodiment, Fig. 4 (not shown), the differential is located in the hydraulic drive path, and forward and reverse drives are provided in both speed ranges. Control.-A control handle 122 is movable axially to actuate a valve 128 controlling actuation of the clutches 20, 22 and is pivotable to actuate a valve 35 controlling the swash plate of the hydraulic unit 31. The control rod 160 is formed with grooves 144-146 for engagement by a spring- loaded ball 142 to locate the rod in positions corresponding to engagement of one or other or neither clutch. The upper portion of the control handle 122 comprises a pair of pivotally mounted bars 163, 164 which are spring-urged apart and which are movable in a slot 167 in a guide plate 170. Notches 188, 189 are formed in the guide plate for locking the handle in the neutral position when in the high or low range position respectively.
Patent GB-949577-A (GB)
Title: Electro-magnetically actuated fluid flow control valve
Inventor: DONGUY RENE
IPC: F16K31/06
Filed: 1960-11-10
Abstract: 949,577. Electromagnetic switches. COMMISSARIAT A L'ENERGIE ATOMIQUE. Nov. 10, 1960 [Nov. 10, 1959], No. 38630/60. Heading H2B. [Also in Divisions F2 and H1] An electro-magnetically actuated valve comprises a fluid-tight tubular member surrounded by a solenoid 13 having two windings. A main ferro-magnetic core 12 is slidable in the tubular member while an auxiliary core 23 is slidable in a flanged member 21. The auxiliary core 23 carries a washer 24 which actuates two microswitches such as 32. In operation, a " pull in " current is applied to one of the windings, the other being short-circuited by the switch 32, and the main core 12 moves inwards. At the end of its stroke, the increase in magnetic flux causes the auxiliary core 23 to move inwards and the washer 24 actuates the two switches, the switch 32 causing the windings to be connected in series thereby reducing the current required to hold the core 12, and the second switch actuates an indicator in a separate circuit.
Patent GB-1190634-A (GB)
Title: Air Support System for Webs of Material.
IPC: B65H23/24
Filed: 1967-08-22
Abstract: 1,190,634. Feeding webs. MASCHINENFABRIK VITS G.m.b.H. 22 Aug., 1967 [23 Nov., 1966], No. 38652/67. Heading B8R. An air bearing support for a web comprises a slit nozzle extending transversely of the web and arranged to direct air at an angle towards and along the web, and a convex perforated air guiding surface downstream of the nozzle. In Fig. 1, an arrangement includes two such supports comprising a pair of opposed nozzles defined by a pair of plates 3 and a concave plate 2. The plates 3 extend beyond the mouth of the nozzles to form the convex air guiding surfaces perforated at 3a. Concave plate 2 is also perforated at 2a. Fig. 1 illustrates drying apparatus which includes nozzles 4 and 5. The air bearing support arrangement illustrated in Fig. 1 may be used for changing the direction of movement of a web (Fig. 6), and also for the climatic treatment of a web passed through a drier (Fig. 8). A single nozzle and convex guiding surface may be used to stabilize a paper web running through a printing machine in the region of an optical sensing device (9, Figs. 4 and 5) for automatic register control.
Patent GB-941778-A (GB)
Title: Improvements in or relating to transformer arrangements
Inventor: FRIEDLANDER ERICH SIEGFRIED
IPC: G05F1/32
Filed: 1960-11-10
Abstract: 941,778. Automatic regulation. GENERAL ELECTRIC CO. Ltd. Nov. 3, 1961 [Nov. 10, 1960], No. 38660/60. Heading G3X. [Also in Division H1] Fig. 3 shows a transformer 8 with its auxiliary control winding 5 connected to a transductor 11 energized from a magnetic amplifier 10 which is excited from the line voltage and also, via a current transformer 9, from the primary current. To make the transductor control sensitive to the voltage drop due to the load current a further winding on the current transformer 9 having a phase displacing impedance LR connected across it feeds the transductor control at a voltage #e (Fig. 4) through a pair of back to back rectifier bridges 12. The reactive voltage drop can be compensated by adding a fixed capacitor. If the transformer supplies an arc furnace the auxiliary winding can be connected across the furnace electrodes directly or through another transformer. Alternatively, it can be fed from a fourth winding which is tightly interleaved with the secondary windings and may link also with the leads as far as the electrode terminals. Specification 932, 549 is referred to.