baber/WOPTO huggingface dataset:
Patent GB-1030770-A (GB)
Title: Olefin polymerization catalyst and process for synthesis
IPC: C08F4/68
Filed: 1964-12-16
Abstract: A polymerization catalyst is made by reacting, in the absence of ether compounds, an organohalide with magnesium to form an organomagnesium complex, and adding the complex to a heavy metal compound of titanium, vanadium, cobalt, or zirconium.  After the reaction is completed substantially all the liquid phase may be replaced with a liquid having a reduced solubility for the solid phase.  If desired, after the above catalyst components have been reacted, the resulting mixture may be combined with an organoaluminium compound or boron trifluoride.  The catalyst is used to polymerize ethylene, propylene, propylene trimer, butylene and mixtures thereof.  The preferred organohalide is chlorobenzene and the exemplified transition metal compounds are TiCl4, and Ti-(o-butyl)4.  The polymers are recovered by conventional "low-pressure" techniques but when the catalyst employed is devoid of an organometallic aluminium compound, the removal of catalyst residues is facilitated by the addition of an organoaluminium compound to the olefin polymer containing residual catalyst, and then subjecting the polymer mixture to conventional recovery methods.  The polymerization may be effected in the presence of hydrogen.  The preparations of the following polymers are exemplified polyethylene, copolymer of hydrogenated propylene trimer and ethylene, and polypropylene.
Patent GB-1415343-A (GB)
Title: Boiler
IPC: F22B15/00
Filed: 1972-11-08
Abstract: 1415343 Boiler CLARKE CHAPMAN L t d 19 Oct 1973 [8 Nov 1972] 51407/72 Heading F4A A boiler comprises a shell 10 to contain liquid to be heated, a gas duct 12 extending within the shell, with an inlet 26 and an outlet 28 at opposite ends of the duct, and an array 14 of liquid tubes extending between opposite surfaces of the duct with the inlet and outlet at opposite sides of the array, the parts 30, 32 of the duct not occupied by the array at the inlet and outlet sides diverging towards the inlet and outlet respectively. The array may have parallel sides, or the sides may diverge towards the outlet end, Fig. 3 (not shown). The tubes may be vertical and the duct axis horizontal, or vice versa. The gases emanate from a burner 27; alternatively or additionally waste heat from a source (40), Fig. 4 (not shown) may be supplied through a duct (42). Tubes near the exhaust 28 or the burner may be used for preheating feedwater or for superheating steam, respectively, Figs. 5-7 (not shown).
Patent GB-1196068-A (GB)
Title: Improvements in or relating to Magnetic Tape Recording and Reproducing Apparatus.
Inventor: JOHNSON WILLIAM EDWARD
IPC: G11B27/032
Filed: 1968-10-31
Abstract: 1,196,068. Tape recording apparatus. W. E. JOHNSON, and M. S. STEELE. 31 Oct., 1968, No. 51715/68. Addition to 1,147,746. Heading G5R. The arrangement disclosed in the parent case is modified by using a rack, coiled spring or the like to represent the length of tape which is recorded on or played back whereby the arrangement may be used with tape stored in a cassette. Tape 8 is fed from spool 6 to take-up spool 7 in cassette 5 via head assembly 10 and capstan 11. On commencement of recording or playback, rack 13 is moved by solenoid 16 into engagement with a pinion 4 on take-up spool drive spindle 2 and is driven to the left against the action of spring 14. On completion of recording/ play-back and on subsequent rewind, the end of the rack engages stop 15 to stop the rewind process when the rack is returned to its initial position and the commencement of the length of tape which has been recorded on or played back is again beneath the head assembly. The arrangement is particularly for use in teaching machines.
Patent GB-1245065-A (GB)
Title: Improvements in or relating to curios adapted for use as ashtrays or containers for holding miscellaneous articles
IPC: A24F19/00
Filed: 1969-10-22
Abstract: 1,245,065. Smokers' ash-trays. LE SULLY D'AUTEUIL. 22 Oct., 1969 [30 Oct., 1968], No. 51768/69. Heading A2M. [Also in Division A4] A curio consists of two identical, cupshaped elements 1, for use separately as ashtrays, or when superposed for use as a closed receptacle for trinkets &c, formed with one or more cigarette supporting notches 2, these notches 2 being part of a series of corrugations 4, the said series of each element 1 interfitting when they are superposed. The inner surfaces of the elements 1 may carry advertising matter and their outer surfaces may be decorated.
Patent GB-1284739-A (GB)
Title: Testing elastomeric compositions
IPC: G01N11/16
Filed: 1969-10-22
Abstract: 1284739 Testing elastomeric compositions MONSANTO CO 22 Oct 1969 [23 Oct 1968] 51857/69 Heading G1S An uncured elastomeric article such as a vehicle tyre has an inserted thermocouple 30 so that as the tyre is cured its temperature at that point is converted into a signal which is transmitted to a pair of power controllers 31, 32, controlling the heaters of upper and lower dies 11, 16 containing a sample of the tyre elastomer. As the tyre is cured so is the sample between the dies and the temperature/time relationship of the curing is reproduced in the dies, the temperature being detected by thermocouples in the dies and relayed back to the controllers 31, 32 for checking. A record of the temperature and time detected by couple 30 may be made on a recorder 29 and temperature/time/viscosity graphs are drawn from conditions metered from the sample in the dies, the rotor 19 being used to determine the varying viscosity as curing progresses. The temperature graph recorder 29 may be used to provide a record card which may be used subsequently to control further operations. In a modification the tyre is provided with four thermocouples and the viscosimeter may be replaced by any other detector which may measure a condition of the sample dependent on the state of curing. In Fig. 1 the dies are provided with heaters 24, 25 and inculators 7, 12, 13, and an air inlet 27 may be provided to circulate cooling air within a shield 26.
Patent GB-1459097-A (GB)
Title: Gas-atomizing nozzle
IPC: F23D11/10
Filed: 1973-11-08
Abstract: 1459097 Injection nozzles S TAMAI 8 Nov 1973 51993/73 Heading FIB [Also in Divisions B2 and F4] Fuel is atomized in internal combustion engines by a nozzle comprising a longitudinally extending liquid passageway 1 terminating in a liquid orifice in an end-wall of said nozzle and converging gas passages delimited by grooves 4 in a tapered solid of rotation (formed by rotation of a line about the liquid passageway axis) and a cover 5 fitting over the grooves, which terminate in orifices spaced radially from and arranged symmetrically about the liquid orifice, the gas passages being each (a) less than one turn of a helix, the helices, if notionally extended, converging to a focal point 7 lying on the liquid passageway axis beyond the liquid orifice, the focal point 7 coinciding with the imaginary apex of the solid of rotation, and (b) of such a shape that, when projected on to a plane perpendicular to the liquid passageway axis, the projections of the edges of each groove correspond to the shapes of a selected pair of stream lines, Fig. 5 (not shown) directed towards a sink (b), (Fig.5), of a hydrodynamic dipole, said sink (b) coinciding with said axis at said focal point 7. Determining first the radii of the base and the upper face of the solid of rotation of the nozzle body 3, the shape of a groove is determined by selecting the radius of the inner stream line of the pair to be in tangential relationship with the circle defining the base. The groove shape is enclosed by a line joining the intersections of the two stream lines with the circles. The number and area of the grooves determines the power of the stream. Gas supplied under pressure, via an annular chamber 2, to the passages is focused at 7 and atomizes the liquid droplets which then follow orbits (8), Fig. 3 (not shown) in a state conical zone (9). The solid of rotation may be a truncated cone, as shown, or a hemisphere truncated by a plane perpendicular to the axis of the liquid passageway.
Patent GB-1131499-A (GB)
Title: Adiabatic calorimeter
IPC: G01K17/04
Filed: 1965-12-08
Abstract: 1,131,499. Calorimeters. DYNATECH CORP. Dec. 8,1965 [Dec. 8, 1964; Sept.13,1965], No.52158/65. Heading G1D. A calorimeter particularly for measuring specific heats comprises an adiabatic shield 224 defining a cavity and arranged to maintain the cavity walls substantially isothermal, a sample container 222 being disposed in the cavity and spaced from the walls thereof, the container having electrically heated and substantially isothermal surfaces, means for supplying electrical energy to heater on the container, and means maintaining the cavity forming walls of the adiabatic shield at the temperature of the container so that all the electrical energy supplied to the container is effectively used to heat the sample, its temperature rise with time being measured. In Fig.2 the calorimeter is contained within a bell jar 216 sealed to a base plate 214 and evacuated to reduce heat losses. A container 226 is mounted on the plate 214 on columns 212 of thermally insulating material and this contains thermally insulating blankets 230, 232, 234. Multiple layer radiation shields 240, 242, 244 e.g. of polished stainless steel, are provided inside the blankets 230, 232, 234, and a stainless steel beaker 238 rests on the radiation shields. The adiabatic shield 224 is provided with relatively thick walls 256, 258, 260 of copper and an electrical heater 262 is wound round the outside of the shield, cover plates 264, 266, 268 being provided for the heater wires. The sample container 222 as shown is for use with a liquid sample and comprises a sealed vessel, with interiorly projecting heat conducting fins (not shown), its electric heater 270 being spirally wound on the body of the vessel, the leads for the heater being used to suspend the vessel in the cavity in the adiabatic shield. For solid samples, a rectangular section sample is used, heat conductive plates being clamped to opposite faces of the sample with the heater being disposed in serpentine form in the plates. In use thermocouples are used to sense the temperatures of the sample and the adiabatic shield and an electrical arrangement is provided to ensure that the temperature of the shield is maintained equal to that of the sample. Electrical energy is supplied to the sample heater 270 at a constant rate and since the sample is in isothermal surroundings all this energy is used to heat the sample. The time taken for a desired rise in temperature of the sample to occur is measured and from this the specific heat of the sample can be found. For low temperature work liquid nitrogen, for example, can be introduced through a tube 250. In an alternative construction of calorimeter the container 226 is in effect replaced by a Dewar vessel.
Patent GB-1294342-A (GB)
Title: A patterning mechanism in a circular knitting machine
IPC: D04B15/68
Filed: 1969-10-24
Abstract: 1294342 Knitting-machines JUMBERCA SA 24 Oct 1969 [24 Oct 1968 31 Oct 1968] 52210/69 Heading D1C A pattern mechanism for a circular machine comprises a bank of manually set sliders 3 locked in position by an arm 20 engaging notches in the sliders. The individual sliders are identified by a numbered scale 39. The mechanisms are enclosed by a guard 25. The cycle of the cam track 7 for the intermediate jacks 6, is such that they are selected at A before the needles are raised by cam 30. The jack selection is cancelled by cam 31.
Patent GB-1152545-A (GB)
Title: Polystyrene Resin Solutions
Inventor: HARRISON WILLIAM ARTHUR
IPC: C08J3/21
Filed: 1967-11-17
Abstract: 1,152,545. Solutions of polystyrene, plasticizer and U.V. absorber. W. A. HARRISON. 17 Nov., 1967, No. 52326/67. Heading C3P. A solution comprises polystyrene of molecular weight at least 170,000, a m.p. of at least 93‹ C. and an impact strength of 0À45, a plasticizer, e.g. dibutyl or diphenyl phthalate, and an effective amount of an ultraviolet light absorber in a solvent for the polystyrene. The U.V. absorber may be 2,2<SP>1</SP>-diphenoxy-4,4<SP>1</SP>-diphenyl-diphenyl or 2 - hydroxy - 4 - methoxy - 4 - methyl - benzophenone. The solvent may be xylol, benzene, toluene, dimethyl benzene or diethyl benzene. The solution may be used to mount microscopic slides.
Patent GB-1375551-A (GB)
IPC: G03G5/05
Filed: 1971-11-11
Abstract: 1375551 Photo-conductive compositions EASTMAN KODAK CO 11 Nov 1971 [13 Nov 1970] 52395/71 Heading G2C A method of forming a heterogeneous organic photo-conductive composition comprises dissolving a pyrylium, thiapyrylium or selenapyrylium dye in an organic solvent, adding an electrically insulating organic polymer containing alkylidene diarylene residues and thoroughly mixing, the amount of dye being such that in the mixture there is at least 90% of its solubility limit, then adding more solvent to reduce the dye concentration to less than 75% of the said limit and coating the diluted mixture on to a conductive support. The photo-conductive composition includes a particulate phase preferably submicron sized, comprising a co-crystalline complex of dye and polymer. The composition may incorporate other organic or inorganic photoconductors, added to the mixture before dilution. The dyes, polymers, photo-conductors solvents and conductive substrates are the same as those disclosed in Specification 1375398. In an example 4- (4-dimethylaminophenyl)-2,6- diphenylthiapyrylium fluoroborate is dissolved in a mixture of dichloromethane and trichloroethane with stirring. Then poly (4,4'- isopropylidenediphenylene carbonate) and 4,4'- diethylamino-2,2'-dimethyltriphenylmethane are added and after stirring the mixture is diluted with the same solvent and coated on to a substrate of polyethylene terephalate coated with nickel by vacuum evaporation.
Patent GB-1510969-A (GB)
Title: Marine propeller pitch-control system
IPC: B63H3/08
Filed: 1974-12-04
Abstract: 1510969 Variable pitch propellers NEWAGE ENGS Ltd 4 June 1975 [4 Dec 1974] 52444/74 Heading B7V In a marine propulsion apparatus having a driving motor and a reversible reduction gearbox 14, a variable pitch propeller assembly comprises blades 12 whose pitch angle is adjusted by a single acting piston 31 in a housing 30 connected to the gear-box 14, which is permanently acted on by a spring 38 biasing the piston to a first stop 41 corresponding to a coarse angle pitch of the blades, and a fluid pressure supply 59 to force the piston towards a second stop 44 corresponding to a fine pitch angle of the blades, both angles corresponding to forward propulsive thrust, and the spring being arranged to return the piston to the coarse pitch angle stop 41 when the fluid pressure on the piston is relieved. In the figure the spring 38 comprises a stack of conical washers 38, but in Fig. 1A, not shown, the spring comprises a cluster of stacks of smaller washers (51), and in Fig. 1B, not shown, the springs comprise a cluster of helical springs (50<SP>1</SP>A). The spring may be of the hydraulic or pneumatic type. The action of the spring may be augmented by an additional spring housed in the hub 11 and acting on the control rod 45. The stop rings 41 and 44 can be altered in size for fine tuning of the blade pitch angle adjustment. The fluidpressure supply 59 may be connected with the lubrication system of the gear-box 14.
Patent GB-1499818-A (GB)
Title: Anaesthetic composition
IPC: C07C67/00
Filed: 1974-12-06
Abstract: 1499818 2 - Chloro - 1,2,2 - trifluoroethyl difluoromethyl ether IMPERIAL CHEMICAL INDUSTRIES Ltd 2 Dec 1975 [6 Dec 1974] 52834/74 Heading C2C [Also in Division A5] The title compound CHF 2 OCHFCF 2 Cl is prepared by one of the following methods (a) chlorination of CHF 2 OCHFCHF 2  (b) fluorination of CH 2 OCH 2 CCl 3  or (c) reductive partial dechlorination of CHF 2 OCFClCF 2 Cl. The latter starting material may be obtained via the following sections
Patent GB-1100698-A (GB)
Title: Anti-bilharziasis compounds and their production
Inventor: ALTREUTHER PETER
IPC: C07D277/82
Filed: 1966-11-25
Abstract: Novel 2 - amino - 4,7 - dimethoxy - 6 - thiocyanato -benzothiazole is obtained by reacting 2,5-dimethoxyaniline with a thiocyanating agent. 2,5 - Dimethoxy - 4,6 - dithiocyanatoaniline, which is formed as an intermediate compound, can be isolated from the reaction mixture and ring closed by heating to form the final compound.  Alternatively, 2-amino-4,7-dimethoxy - 6 - thiocyanato - benzothiazole is obtained by treating (2,5-dimethoxy-phenyl)-thiourea with an oxidizing agent and thiocyanating the 2 - amino - 4,7 - dimethoxybenzothiazole thus formed.  Suitable thiocyanating agents are dithiocyanogen, halothiocyanogen and mixtures of inorganic thiocyanates. Pharmaceutical compositions having schistosomicidal activity containing the above compounds are administered orally.
Patent GB-1247806-A (GB)
Title: Improvements in or relating to clockwork calendars
Inventor: GAEMERS PIETER WILHELMUS MARIA
IPC: G04B19/253
Filed: 1969-10-29
Abstract: 1,247,806. A clockwork calendar. P. W. M. GAEMERS. Oct.29, 1969 [Oct.31, 1968], No.52952/69. Heading G3T. A clockwork calendar comprises a clockwork driving means coupled to a transmission mechanism for periodically adjusting the calendar, the transmission mechanism including driving shaft 2 which rotates once every 24 hours, having two members 3, 4 fixedly mounted thereon, one of the members, 4, co-operating with a movable latch element 8 for temporarily locking and suddenly releasing an adjustment lever 11 mounted for rocking movement through a limited distance, the adjustment lever having an adjustment finger 15 for adjusting the calendar mechanism 16, the calendar mechanism being entirely uncoupled from said adjustment finger before and after the adjustment, the adjustment lever 11 being connected with an operating lever 6 by means of a biassing member 9 and forming a snap action mechanism therewith, the operating lever being mounted for rocking movement, the other member 3 on the driving shaft serving to rock the operating lever. As described, cam 3 rocks lever 6 about pivot 5 and cam 4 moves slide 8 axially (radially of the cam) between guide blocks 7. Lever 6 is connected by tension spring 9 to lip 10 on lever 11 mounted between rollers 12. Movement of lever 11 is limited by engagement of dog 13 between stops 14. Finger 15 on lever 11 in one direction of travel of the lever trips switch lever 16 of calendar mechanism (not shown or described) to advance the reading, but on the return stroke causes lever 16 to make an inoperative stroke. Fig. 1 shows the mechanism just before midnight. Cam 3 has moved lever 6 to its extreme leftward position. Spring 9 is under tension and pulling dog 13 of lever 11 against slide 8 Cam 4 is about to release slide 8. Immediately after midnight, Fig. 2, slide 8 has been released and has moved downward as spring 9 has pulled lever 11 anticlockwise, during which sudden movement finger 15 has struck lever 16 and released it again. A similar action at midday Figs. 3 and 4 (not shown) cocks the mechanism.
Patent GB-1180372-A (GB)
Title: Slidable Print Head for a Printing Apparatus
IPC: B41J2/32
Filed: 1968-11-11
Abstract: 1,180,372. Selective printing. NATIONAL CASH REGISTER CO. 11 Nov., 1968 [12 March, 1968], No. 53278/68. Heading B6F. Letter-spacing; thermal printers.-A selective printer comprises a print head 44, Fig. 1, slidably supported on a bar 46, the print head being movable from a non-printing position to a printing position by rocking the bar 46, and being indexable along the bar 46 for letterspacing movement, both rocking and indexing movements being effected by a common member. The common member comprises a lever 66, Fig. 6, acted upon by a solenoid 76. Energization of the solenoid 76 causes counterclockwise pivoting of the lever 66, which acts to rock the bar 46 through a link 80, Fig. 6, and further links (82, 84, 90), Figs. 9, 10, not shown, so that the print head 44 assumes its printing position and an impression can be made. De-energization of the solenoid 76 permits a spring 70 to urge the lever 66 clockwise, whereby the print head returns to its non- printing position and is indexed one character space by means of a pawl 102 on the lever 66 acting on a ratchet wheel 96 to rotate a shaft 64 which carries a pulley 60, Fig. 1, around which passes a belt 54 which is keyed to the print head at 56. A pawl 108, which normally engages a second ratchet wheel 98 on the shaft 64 to prevent clockwise rotation thereof, is mounted on the lever 66 such that during letterspacing movement of the shaft 64 the pawl 108 is disengaged from the ratchet wheel 98. The mechanism is applied to a thermal printer of the kind having a five-by-seven array of selectively energizable resistive elements, to print on thermally sensitive paper. Carriage-return mechanism.-When the print head 44 reaches the end of a print line, a switch 122. Fig. 1, is closed thereby, so that a solenoid 124 and a motor 126 are energized. The solenoid acts to draw a plunger 128, Fig. 6, rightwardly so that a lever 130 pivots about a fastener 134. The lever 130 engages pins on pawls 102, 104 which normally prevent counterclockwise rotation of the ratchet wheel 96 to urge the pawls out of engagement therewith. Concurrently, a cable 144 connected to the lever 130 is relaxed, permitting a spring (146), Fig. 3, not shown, to urge a lever (148) to engage a clutch which drivingly connects the motor 126, Fig. 1, with a gear 156 to drive the shaft 64 and return the print head to the beginning of the line. The print head acts on a switch 168 at the beginning of the line, to de-energize the solenoid 124 and motor 126. Line-spacing.-Paper for receiving printed impressions is fed for line-spacing by pin wheels 172, 174, Fig. 1, by means of a solenoid 218 which acts on a pawl (208, Fig. 3) to rotate a ratchet wheel 198 keyed to the shaft 176 bearing the pin wheels 172, 174. Input arrangements.-The print head 44 is connected by a multiple conductor cable 246 to a terminal block 248, to which a computer or keyboard may be connected.
Patent GB-1408952-A (GB)
Title: Vapour generators
IPC: F22B37/22
Filed: 1972-11-17
Abstract: 1408952 Steam generators SIEMENS AG 17 Nov 1972 [17 Nov 1971] 53377/72 HeadingF4A In a steam generator in which water flows beneath a partition 12 to pass upwardly over U-tubes 2 through which a primary heating medium of a nuclear reactor is circulated, and steam passes to outlet 6 via a water separator 5, feed water is discharged through pipes 15 into the water leaving the separator 5 to condense any residual steam. The pipes 15 extend radially from a distribution pipe 9 connected to an inlet 8 and are provided with discharge apertures 15a. Alternatively the pipes can be supplied from a central distribution pipe (18, Fig.4) or may be mounted above the separator with discharge pipes (16 Fig. 3) extending down into the separator. In a further modification water from the separator mixes with feed water passed upwardly from a distribution floor (19, Fig. 5).
Patent GB-1236278-A (GB)
Title: Fluidic amplifier
Inventor: GLAZE STANLEY GEORGE
IPC: G05D16/18
Filed: 1968-11-12
Abstract: 1,236,278. Vortex amplifiers. H. M. HOBSON Ltd. Oct. 17, 1969 [Nov.12, 1968], No.53601/68. Heading G3H. A fluidic amplifier comprises pairs of pushpull connected vortex amplifiers forming a comparing section V1-V4, and amplifier sections V5, V6 and V7, V8 with a fluid potentiometer R5, R6 providing a multiplying factor feedback signal P p  to the comparing section which also receives a signal P I  to be multiplied. Capacitors C 1 , C 2  and resistors R 1  -R 9  provide the desired operating conditions with a common supply P S . Amplifiers V5-8 are constructed as shown in Fig. 6 with tangential control inlets 13, an annular supply inlet 111, and an axial outlet 12 feeding a recovery probe 15. The Specification sets out pressures and dimensions, and discusses the operation of the amplifier in detail. Specification 1, 236, 277 is referred to.