baber/WOPTO huggingface dataset:
Patent GB-960679-A (GB)
Title: Method of and apparatus for dissolving solid solute material in a solvent
IPC: B01F5/00
Filed: 1962-10-24
Abstract: 960,679. Dissolving solids. ALLIED CHEMICAL CORPORATION. Oct. 24, 1962 [Oct. 25, 1961], No. 40319/62. Heading B1Q. An apparatus for dissolving a granular solid in a solvent comprises an inverted generally conical chamber 6 seated inside a tank. The tank is initially filled with solvent liquid via pipe 31 to the desired depth, which may be obtained automatically by use of pre-settable water meter 32 or manually with the use of valve 33. Then, with valves 23, 27 and 29 open and valve 28 closed, pump 24 is started and solvent liquid is thus caused to flow from the tank via the conduit comprising pipes 22, 25, 26 and 15 into the lower apex region 7 of casing 6. When the casing 6 is filled to the edge of weir 19 and solvent liquid has begun to overflow back into tank 2 via conduit 18, the granular solute material to be dissolved is urged by a feed screw or other means (not shown) through pipe 14 and out of the open end 13 thereof into the solvent liquid in the upper region 8 of casing 6 within the area defined by baffle 20. The granular solute falls through the upwardly-flowing solvent liquid until individual particles reach zones in the chamber where the upward velocity of solvent is sufficient to prevent further fall. The largest particles of solute thus fall farthest down toward the apex region of the conical casing 6, where they are subjected to maximum velocity conditions and then gradually rise as they become progressively dissolved. The baffle 20 functions to prevent short-circuiting of fines of solute entering casing 6 directly over weir 19 before adequate solvent action of the countercurrent flows has taken place. In the preferred operation of the device, the flow rates of solvent and solute are correlated with each other and with the dimensions of the casing so that while maximum turbulent agitation is obtained in the lower apex region 7 of the casing 6, substantially no undissolved dry material is carried over weir 19, substantially all dissolution occurring within the bottom two-thirds of the casing. The sloping walls of the casing 6 redirect undissolved particles back into the zone of greatest solvent velocity as the particles descend due to gravity. After a solution of sufficient concentration has been obtained, valve 29 is closed and valve 28 opened, whereupon the solution is pumped by the same pump 24 to the point of use via pipe 30. When the tank has been substantially emptied of solution, the cycle above described may be repeated to produce subsequent batches of solution. A new modification of the invention wherein the conical dissolver chamber is completely submerged in the tank associated therewith is described in relation to Figs. 3 and 4 (not shown).
Patent GB-1328628-A (GB)
Title: Refrigeration system with multiple centrifugal compressors and load balancing control
IPC: G05D23/19
Filed: 1971-08-31
Abstract: 1328628 Automatic control of current and temperature WESTINGHOUSE ELECTRIC CORP 31 Aug 1971 [28 Sept 1970] 40477/71 Heading G3R [Also in Divisions F1, F4] A refrigeration system includes parallel compressors driven by electric motors. The currents drawn by each motor are compared and the capacity of a compressor is automatically reduced if the current in its associated motor exceeds the currents in other motors, so that the loads on the compressors are balanced. In the system shown, a refrigeration circuit includes two parallel compressors 1, 3 driven by motors 2, 4 respectively, a condensor 7, an expansion valve 8 and an evaporator chiller 9. Sensors 19, 23 detect the temperature of zooled water 10, and elements 20, 24 operate  appropriate contacts 21, 22, 25, 26 if the temperature is above or below a desired value, to energise solenoids 27-30. These solenoids operate valves which control pressure fluid-flow to piston and cylinder arrangements for opening or closing vanes on the compressors 1, 3 and thus adjusting the flow in the refrigerant circuit, Figs.2-5 (not shown), to regulate the water temperature. Each compressor motor 2, 4 has a currentsensing coil 70, 71 connected to an associated relay 72, 73 which, when the motor current  exceeds a preset value, closes contacts 72', 73' to energise one of the solenoids 27, 28 and decrease the load on the motor concerned. The coils 70, 71 are connected together in a bridge arrangement 75, 76, 77 so that the sensed currents flow in opposition and an excessive current  difference operates the relay 72, 73 associated  with the motor drawing the higher current. The load on that motor is reduced as described above and the compressor loads are balanced. Similar  comparator connections for three parallel compressor motors are described, Fig. 6 (not shown). If a motor is switched off, an associated contact 80, 81 closes to short out the currentsensing coil 70, 71, allowing the remaining motors to function in the same way as before.
Patent GB-1312633-A (GB)
Title: Polymerization of conjugated dienes
IPC: C08F36/04
Filed: 1970-08-21
Abstract: 1312633 Bulk polymerization of dienes FIRESTONE TIRE & RUBBER CO 21 Aug 1970 [22 Sept 1969] 40494/70 Heading C3P Conjugated dienes are polymerized or copolymerized in bulk, using an organolithium initiator, by a procedure in which the heat of reaction is removed by evaporation and condensation of a controlled amount of the monomer and excessive foaming is avoided by keeping the temperature below the "critical minimum foaming temperature" until the solids content of the mixture exceeds the "critical polymer concentration" and then raising it to 50-150‹ C. to complete the process. The temperature at which excessive foaming occurs is found to vary with the solids content of the mixture, as illustrated, and to pass through a minimum, referred to as the "critical minimum foaming temperature" (usually about 40‹ C. for butadiene polymerization), the corresponding solids content being referred to as the "critical polymer concentration" and lying in the range 20-40%. These quantities are constants for a given set of reaction parameters. After the "critical polymer concentration" has been exceeded monomer may be introduced and polymer withdrawn continuously at the higher temperature while maintaining the polymer concentration above the critical value.
Patent GB-1399383-A (GB)
Title: Mould and process for the production of hollow concrete  articles
IPC: B28B21/18
Filed: 1972-09-01
Abstract: 1399383 Moulding hollow concrete elements F J BAUMELT 1 Sept 1972 [10 Sept 1971] 40552/72 Heading B5A A mould for concrete pipes comprises a female mould member 3, a core 2 having a flexible, fluid-tight, tubular lining 4, and an outer support wall 5 which also has a similarly fluid-tight lining 6; in use, the concrete 1 is compressed by inflation of the lining 4, simultaneous inflation of the lining 6 effecting support of the mould member 3. Air can be evacuated from the moulding cavity, during compression, through outlets provided in end cover members 9. Reinforcements 7 may be incorporated into the pipe. To accelerate setting of the concrete, the fluid employed to inflate the linings may be heated, as may the mould.
Patent GB-1182365-A (GB)
Title: Surface Active Substances
IPC: C09K23/00
Filed: 1968-08-26
Abstract: 1,182,365. Emulsions of biocides. FARBWERKE HOECHST A.G. 26 Aug., 1968 [26 Aug., 1967], No. 40711/68. Heading A5E. [Also in Division C3] Biocide dispersions are prepared using a polyurethane surfactant prepared by reacting together: (A) 1 mol. of a bulk polymer, M.W. 1000-6000, which has been formed from a water insoluble polyether, M.W. 500-3000, based on propylene oxide, butylene oxide or epichlorohydrin, and from 35-100% by weight of the polyether of ethylene oxide; and (B) 1 mol. of a compound: R(C 2 H 4 O) 4 H where R is a C 8-18  alkyl group or a mono-, bis-, or tris- (C 4-22 ) alkyl-phenyl or - naphthyl radical and n is 2-10; with 1 mol. of a diisocyanate or a compound which yields such under reaction conditions. The surfactant may be used in conjunction with other emulsifying agents. A suitable emulsifier surfactant, 20-15% of a 70% solution of calcium dodecyl benzene sulphonate or tetrapropyl benzene sulphonate in isopropanol, and 15-10% of an alkyl aryl polyglycol ether. From 30-10% of this emulsifier may be used together with 70-90% of a thiophosphoric acid ester biocide, e.g. O, O-diethyl-O-(4-nitrophenyl)-monothiophosphate.
Patent GB-408633-A (GB)
Abstract: 408,633. Calculating-machines; transfer-mechanism. PETTERS, Ltd., and PETTER, G. B., Westland Works, Yeovil, Somerset. Oct. 12, 1932, No. 28466. [Class 106 (i).] A calculating-machine comprises in each column a pinion movable in one direction only and engaged and actuated by a gear segment when the keys are depressed, a transfer lever in each column moved in one direction during key actuation and movable in the opposite direction to effect transfer, and means for preventing transfer to a next higher column, when actuation is taking place therein, until a movable part in the said higher column is returned to its initial position. The invention is shown.applied to a machine having only five keys in each bank, the registration of certain digits necessitating the successive depression of two keys. Differential movements are given to an actuating lever 8 pivoted at 33 by the keys acting on different slopes 32. A segment lever 9 pivoted at 34 has pivoted to it at 40 a gear segment 16. The actuating lever 8 when depressed moves the segment 16 into engagement with the totalizer pinion 15 by means of a projection 26 and the segment lever and segment are then moved differentially about the pivot 34. On the return movement, effected by a spring 38, the pawl-detained totalizer pinion 15 pushes the segment back to its out-of-gear position. Stops 44, 45, limit the movements of the segment. At the beginning of the motion of the segment lever 9 the pivot 50 moves away from an extension 42 of the transfer pawl 19 which forms a locking detent for the totalizer pinions. Transfer-mechanism.-A cam 18 rocks a lever 13 clockwise about its pivot 11 and stresses a spring 12. The lever has pivoted to it a transfer pawl 19 engaging the next higher totalizer pinion. At transfer, the spring 12 restores the lever 13 and the pawl 19 effects the transfer operation. When actuation is occurring in the next higher column, the projection 26 of the actuating lever 8 is moved away from an arm 25 of a lever 22, whereby the lower end 28 of the lever 22 is moved into the path of the transfer lever 13. If the lever 13 is rocked by the cam 18, due to the totalizer wheel passing through a transfer point, it is latched by the lever-end 28 until the actuating lever 8 returns to normal position, whereupon the projection 26 engages the arm 25, the lever 13 is released and the transfer communicated. The pivot 40 forms an overthrow-preventing abutment for the transfer pawl 19. Specifications 360,375, 360,376, and 360,377 are referred to.
Patent GB-1376400-A (GB)
Title: Apparatus for joining together the ends of plastics or plastically- resilient webs
IPC: B29C65/00
Filed: 1972-09-04
Abstract: 1376400 Seaming non-metallic sheet material CONTINENTAL GUMMI-WERKE AG 4 Sept 1972 [9 Sept 1971] 40866/72 Heading B5K Apparatus for joining unvulcanized tyre cord fabric webs f, g, e.g. rubber having parallel steel wires embedded therein, comprises two pairs A, B of jaws to engage the ends of the webs f, g, the jaws of each pair being provided with teeth 11 to interengage with teeth of the other pair when the jaws are brought together, each pair of jaws being openable or closable independently of the other pair, and the jaws 1, 2 acting as an abutment for the end of the web f. As shown, the upper jaws 1, 3 of each pair A, B are supported on a fixed abutment 5 and the lower jaws 2, 4 are vertically movable by cylinders 6, 7. The pairs A, B are movable towards and away from each other by cylinders 10 acting on yokes 8, 9. The teeth 11 of the jaw 1 are vertically aligned with those of the jaw 2 and similarly the teeth 11 of the jaw 3 with those of the jaw 4. In operation, the end faces of the webs f, g to be butt joined are cut and, with the jaws 1, 2 closed, the web f is introduced between the jaws 3, 4 until its cut face abuts the teeth 11 of the jaws 1, 2. The jaws 3, 4 are closed and the jaws 1, 2 are opened to allow the web g to be positioned with its cut face contacting the cut face of the web f. The jaws 1, 2 are closed and the pairs A, B are moved together until their teeth engage and a butt-joint is formed.
Patent GB-1360143-A (GB)
Title: Split sleeve bearing assembly
IPC: F16C9/02
Filed: 1972-09-04
Abstract: 1360143 Bearings GLYCO-METALL-WERKE DAELEN & LOOS GmbH 4 Sept 1972 [24 Sept 1971] 40902/72 Heading F2A A journal bearing assembly has a split sleeve 1 which is arranged to be removed from the bearing housing without disturbing the shaft 12, one of the portions of the sleeve having an elongate projection 4 on its external surface which slides in a guide groove 3 formed in the surface of the seating 15 and which extends from one point of separation between the seating sections to another. There may be one or more projections on the sleeve. The projections may be narrow C-shaped strips the ends of which are bent to fit into recesses in the sleeve, or may be narrow keys located in recesses in the sleeve or may be a circumferential rib on the sleeve. Alternatively the projection may be on the bearing seating and the groove formed in the sleeve. The other portion of the sleeve is so formed as to retain the sleeve in position.
Patent GB-1127376-A (GB)
Title: Steering column assembly for absorbing impact
IPC: B62D1/19
Filed: 1967-09-08
Abstract: 1,127,376. Energy-absorbing devices. NISSAN JIDOSHA K.K. 8 Sept., 1967 [24 Nov., 1966; 26 May, 1967], No. 41074/67. Heading F2E. [Also in Division B7] A plastically deformable energy absorbing device for use in a vehicle collapsible steering column (see Division B7) comprises a corrugated tube (Fig. 5, not shown), a bellows-like tube 41 with axial slits 42 in the raised portions (Fig. 3), a tube 46 with a pair of projections 50 engageable with narrower slots 47 in a tube 45 (Fig. 9) or a tube (52) carrying at one end a die (53) which deforms a tube (54) on impact (Fig. 10, not shown).
Patent GB-1441135-A (GB)
Title: Multiple pole circuit breakers
IPC: H01H71/10
Filed: 1973-08-31
Abstract: 1441135 Automatic circuit-breakers LICENTIA PATENT-VERWALTUNGS GmbH 31 Aug 1973 [1 Sept 1972] 41134/73 Heading H1N A multi-pole circuit-breaker has a respective coupling slide 16 associated with each pole to trip the said pole when said slide 16 is moved and each said slide 16 is moved by opening operation of its associated pole and is engaged with the coupling slide 16 of an adjacent pole for moving the latter therewith, whereby opening operation of one pole causes tripping of an adjacent pole. As shown, movable contact 8 and a switching arm 6 are pivoted at 7, the arm 6 holding contact 8 against fixed contact 10 by means of a spring 9 and the arm 6 being retained by a stop 3b on a Y-shaped latch 3 which is pivoted at 4 in a slot 5 and has one arm passing through an aperture in arm 6. A release lever 11 may be pivoted about 12 by a bimetallic member 15 or by the core plunger 13 of electromagnetic 14 whereupon the latch 3 is tilted to release arm 6 allowing spring 19 to pivot arm 6 clockwise thereby opening contacts 8, 10 (as in Fig. 2, not shown). A coupling member 16 is slidably secured on the yoke 17 of the trip coil 14a of each pole, and these slides 16 are interconnected, as shown in Fig. 3, by side extensions 16d engaging notches 16c. Each slide 16 has a bent-up lug 16a positioned to abut the leg 3a of latch 3 so that when one pole is tripped the end 6a of arm 6 urges its associated slide 16, and hence the other slides 16, to the left such that all poles are opened.
Patent GB-1108424-A (GB)
Title: Diaphragm fluid pumping systems
IPC: F04B53/14
Filed: 1965-01-01
Abstract: 1,108,424. Diaphragm pumps; reciprocating motors. PANTHER PUMPS & EQUIPMENT CO. Jan.1, 1965 [Jan. 8, 1964; Dec.11, 1964], No. 41202/67. Divided out of 1,108,423. Heading F1A. The subject-matter of this Specification is substantially the same as that described in Specification 1,108, 423, but the claims are concerned with the diaphragm pump.
Patent GB-1407987-A (GB)
Title: Hydrogenation process utilizing homogeneous metal catalysts
IPC: C07C5/03
Filed: 1972-09-06
Abstract: 1407987 Hydrogenation of unsaturated hydrocarbons TEXACO DEVELOPMENT CORP 6 Sept 1972 41225/72 Heading C5E [Also in Division C2] Ethylenically and acetylenically unsaturated organic compounds on hydrogenated to their more saturated devivatives by treating with H 2  gas at 0-600 p.s.i.g. in the absence of O 2 , CO or H 2 O under a catalyst comprising where M = Fe, Co or Ni or mixture thereof, Z = P, As, or Sb or mixture thereof, X = Cl, Br, I or mixture thereof, R = unsubstituted or alkyl substituted phenony or phenyl or mixture thereof wherein the alkyl groups contain 1 to 6 C atoms. Exemplified is the conversion of 1- hexene to hexane, cyclohexadienes to cyclohexene and cyclohexane and cis-2-octene to octane. The preferred catalyst is CoCl[Ph 3 P] 3 .
Patent GB-956661-A (GB)
Title: Carbamic acid esters
IPC: C07C271/06
Filed: 1962-11-02
Abstract: The invention comprises carbamic acid esters of the formula:- <FORM:0956661/C2/1> wherein R1 and R2 represent the same or different C1-4 alkyl radicals (R1 being straight-chain) and R3 represents a C2-4 alkyl radical. The above compounds are prepared by reacting a 3-alkyl-4-N,N-dialkylamino-phenol of the formula: <FORM:0956661/C2/2> with methyl isocyanate, methyl carbamic chloride, N-methyl phenyl carbamate (under transesterification conditions), or with phosgene to form intermediate chloroformic acid alkyl N,N-di-alkylaminophenyl esters of the formula: <FORM:0956661/C2/3> or intermediate bis-(alkyl N,N-dialkylaminophenyl-) carbamic acid esters of the formula: <FORM:0956661/C2/4> which are then reacted with methylamine.  The above carbamic acid esters are used as pesticides. Specification 954,733 also is referred to.ALSO:A pesticidal composition contains as the active ingredient a carbamic acid ester of the formula <FORM:0956661/A5-A6/1> wherein R1 and R2 represent the same or different C1-4 alkyl radicals (R1 being straight-chain) and R3 represents a C2-4 alkyl radical.  Other ingredients include talc, chalk, bentonite, clay, water, alcohols, ketones, liquid hydrocarbons and emulsifiers.  Known insecticides may be present.  Specification 954,733 is referred to.
Patent GB-1176197-A (GB)
Title: A Continuous Dryer
IPC: F26B21/00
Filed: 1967-09-12
Abstract: 1,176,197. Drying wood or cork. ROBERT HILDEBRAND, MASCHINENBAU G.m.b.H. 12 Sept., 1967 [13 Sept., 1966], No. 41558/67. Heading F4G. An apparatus for drying wood or cork comprises a drying zone 2 separated from a cooling zone 3 by a movable gate 24, and a fan 14 for withdrawing preheated air only from the cooling zone and forcing it past heater 15 into the drying zone. A thermostat 27 controls heater 15 or an air inlet valve (not shown) to zone 2. In use wood or cork is intermittently conveyed in stacks or in wagons or baskets along rails 18 through the zones 2, 3, the gate being intermittently raised manually, to allow the passage of the dried material.
Patent GB-917377-A (GB)
Title: Improvements in or relating to four component objectives
IPC: G02B13/00
Filed: 1961-11-21
Abstract: 917,377. Optical objectives. EASTMAN KODAK CO. Nov. 21, 1961 [Nov. 21, 1960], No. 41582/61. Class 97 (1). A four-element objective of aperture greater than f/2 and semi-fixed angle less than 18 degrees comprises two positive elements 1, 2, a biconcave element 3 and a biconvex element 4, the thickness of each element being more than 0.095 F. and each airspace being less than 0.1 F. The thickness t 4  of the biconvex element is preferably at least three times that of the airspace S 3 . Each element may have a refractive index between 1.65 and 1.75, the biconcave element 3 having a dispersive index less than 35 while the dispersive indices of the other elements lie between 55 and 60. Optical data are given for two examples of the objective shown.
Patent GB-896781-A (GB)
Title: Improvements in cam arrangements for four-stroke internal combustion engines
IPC: F01L1/047
Filed: 1960-12-02
Abstract: 896,781. Valve gear; reversing. CESKOSLOVENSKE ZAVODY NAFTOVYCH MOTORU PRAHA NARODNI PODNIK. Dec. 2, 1960 [Dec. 3, 1959], No. 41620/60. Classes 7(5) and 7(6). In an arrangement of inlet and exhaust cams 2, 3, Fig. 2, having the same profile, on the control shaft 1 of a four-stroke engine, the coincident keyway axes O1 of both cams bisect the angle included between the inlet cam axis K2 and the exhaust cam axis K3. The same cams may be used for an engine turning in the opposite direction by reversal of the cams upon the control shaft.
Patent GB-1452018-A (GB)
Title: Method of and apparatus for determining the presence or absence of a flame
IPC: G08B17/12
Filed: 1974-09-25
Abstract: 1452018 Flame detection CERBERUS AG 25 Sept 1974 [25 Sept 1973] 41683/74 Heading G1A In an apparatus for detecting the presence of a flame the low frequency A.C. outputs R, B of two detectors 1, 2, that are each sensitive to different incident spectra (red or blue) are processed by a "difference amplifier" 3 to give two signals (R-K, B), (B-K 2 R); whose phases are compared by a phase comparator 7 which provides an output alarm signal if they are in phase. The alarm signal may be directed via a timing circuit that only activates an alarm 13 if the alarm signal from the comparator 7 persists for greater than a predetermined duration. In Fig. 2, the junctions of two photo-resistors 14, 15 (with corresponding optical filters r, b) and trimmer resistors 16, 17 are connected via capacitors 18 and 19 to the bases of two transistors 20, 21 in the difference circuit 4. Resistors r i , r 2 , ro are connected as shown to determine the values of K 1 , K 2  (see above) and are such that K 1 =r 0 / (r 1 + r 2 ) < 1 and K 2 =r 0 /(r 0 +r 1 ) < 1. The trimmer resistors 16 and 17 are adjusted initially so that the output signals R and B are equal at a given colour temperature (the average temperature expected in a flame). The resulting outputs of the difference circuit 4 are fed via band pass filters 5, 6 to the phase comparator 7. The phase comparator circuit operates like a "voltage doubler", that is, if the input signals are substantially in phase then an output capacitor 33 will be kept charged (and providing an alarm output) otherwise if the two input voltages are out of phase the capacitor 33 will not be charged and there will be no output. A further similar cir-  cuit Fig. 3 (not shown) employing a photodiode and a temperature compensating element is disclosed.
Patent GB-1088738-A (GB)
Title: Improvements in or relating to life-saving vessels
IPC: B63C9/06
Filed: 1966-09-19
Abstract: 1,088,738. Life-saving craft; hatch covers. B. M. OLSEN. Sept. 19, 1966, No. 41732/66. Headings B7A and B7S. A life-saving vessel having two opposing sides 13, 14 which partially define an enclosed central accommodation and storage space 10, each side being capable of serving as either the top or bottom side of the vessel and being provided with a coaming 24 defining a hatchway giving access to said space, each coaming has pivotally mounted at the top and bottom of one end thereof an outer 27 and an inner 41 hatch cover, the outer hatch cover 27 being openable and closeable from the outer side of the vessel or from the accommodation and storage space by manually operable closure means 30, 31 engaging the outer hatch cover 27 outside the coaming and at a position remote from that at which said outer cover is pivoted. The coaming is provided wth windows 25, and on the inner side of the outer cover 27 there is hinged an inner closeable hatch 40 for ventilation, control of the closure means 30 or other purpose.