baber/WOPTO huggingface dataset:
Patent GB-409909-A (GB)
Title: Improvements in or relating to a cooling apparatus and process for annealed material
IPC: C21D9/573
Filed: 1933-06-02
Abstract: 409,909. Metal-heating furnaces. SIEMENS - SCHUCKERTWERKE AKT.- GES., Selmenstadt, Berlin. June 2, 1933, No. 16067. Convention date, April 20. [Class 51 (ii).] Cooling discharged materials.-Metal strip emerging from an annealing furnace is cooled by passage between fluid-cooled jaws 13, Fig. 3, which are yieldably pressed, by weights 21, against the strip 12 and are provided with lateral sealing means to prevent access of air to the edges of the strip. In the construction shown in Fig. 3, the sealing means are constituted by asbestos strips 15 carried by members 14 which are mounted on levers 16 and pressed into contact with the sides of the jaws by a spring 17. The jaws are fitted with renewable contact plates 19 which may be formed with material-guiding recesses and with channels, preferably inclined to the direction of travel of the strip, to carry away any impurities from the surface thereof. Fig. 6 shows a modification in which the lateral seals are provided by flanges 36 and co-operating troughs 35 containing sealing material, such as water, glycerine, oil, or fat. As shown in Fig. 7, the space between the end of the furnace and the face of the jaws 42, 43, is sealed by an asbestos plate 45 with which the jaws are pressed into contact by springs 44. An inert gas, such as nitrogen or carbon dioxide, may be supplied under pressure to the furnace and to the space between the cooling jaws.
Patent GB-1098857-A (GB)
Title: Method and apparatus for data processing
IPC: G11B7/24
Filed: 1965-04-14
Abstract: 1,098,857. Photoconductive materials. ITEK CORPORATION. April 14, 1965 [April 15, 1964], No. 16070/65. Heading H1K. [Also in Division G4] An information storage medium comprises in disc, tape, or drum form a photoconductive layer incorporating a material such as Ge, BN, TiO 2 , ZnO, ZrO 2 , GeO 2 , In 2 O 3 , K 2 Al 6 Si 6 O 22 .2H 2 O, SnO 2 , Bi 2 O 3 , PbO, BeO, Sb 2 O 5 , SiO 2 , BaTiO 3 , Ta 2 O 5 , TeO 2 , B 2 O 3 , ZnS, or SnS 2 . Metal such as copper, silver, mercury, or gold is deposited by a redox reaction at illuminated areas. Before deposition of metal the accuracy of recording may be checked with an infra-red scanner, the beam being differentially reflected by exposed and non-exposed areas. Permanent information may be recorded by the deposition of gold and temporary information by the deposition of silver which may be subsequently selectively etched away to enable the medium to be re-used.
Patent GB-901720-A (GB)
Title: Process for the production of polyethylene and catalysts therefor
IPC: C08F110/02
Filed: 1961-05-03
Abstract: A process for making a catalyst for the polymerization of ethylene comprises grinding TiCl3 in an atmosphere of propylene free from oxygen and water until the TiCl3 has absorbed at least 0,5% of its weight of propylene.  The grinding may be effected by ball milling for at least 24 hours, preferably 5 days; the pressure of the propylene may be from 5 to 15 atmospheres.  The amount of the absorbed propylene is preferably as much as 8% of the weight of TiCl3.  The catalyst may be further activated by the addition of aluminium alkyls.  Using this catalyst ethylene may be polymerized at a temperature of 75 DEG -200 DEG C. in a period of about 1 hour at a pressure of at least 100 p.s.i.g. and preferably 440 p.s.i.g. as described in Group IV(a).  The preferred catalyst to ethylene ratio is 0,001-1,0:1.  Examples of the preparation of the catalyst are given.ALSO:A process for making a catalyst for the polymerization of ethylene comprises grinding TiCl3 in an atmosphere of propylene free from oxygen and water until the TiCl3 has absorbed at least 0,5% of its weight of propylene.  The grinding may be effected by ball milling for at least 24 hours, preferably 5 days; the pressure of the propylene may be from 5 to 15 atmospheres.  The amount of the absorbed propylene is preferably as much as 8% of the weight of TiCl3.  Using this catalyst ethylene may be polymerized at a temperature of 75 DEG -200 DEG C. in a period of about 1 hour at a pressure of at least 100 p.s.i.g. and preferably 440 p.s.i.g.  The polymerization is preferably carried out in the presence of an inert organic solvent such as: cyclohexane, hexane, heptane, benzene, toluene, xylene, tetrahydronaphthalene, high molecular weight liquid paraffins, chlorobenzene, chloronaphthalene, orthodichlorobenzene, ethylbenzene, isopropylbenzene, diethylbenzene and methylcyclohexane. The preferred catalyst to ethylene ratio is 0,001-1,0:1.  Examples of the preparation of the catalyst and its use in the polymerization of ethylene are given.  The catalyst may be further activated by the addition of aluminium alkyls.
Patent GB-1431992-A (GB)
Title: Testing of communications networks
IPC: H04Q11/04
Filed: 1973-04-04
Abstract: 1431992 Automatic exchange systems HASLER AG SIEMENS-ALBIS AG and STANDARD TELEPHON UND RADIO AG 4 April 1973 [4 April 1972] 16142/73 Heading H4K In the exchange system of Specification 1,428,459 it is arranged for every highway to include a channel used for controlling one of the system blocks so that error free transmission of messages between the central control and the blocks can be taken as an indication of the operability of the highways. Signalling on the control channels utilizes acknowledgement messages and the return of an acknowledgement indicating an error, or the failure of an acknowledgement to be received by the central control results in a new control path being set up to the particular block.
Patent GB-880878-A (GB)
Title: Improvements in or relating to drawing mills
IPC: B21C1/30
Filed: 1958-05-20
Abstract: 880,878. Drawing. KRONPRINZ A.G. May 20, 1958 [May 20, 1957], No. 16196/58. Class 83(4). In a drawing mill which includes a rope-driven chucking carriage 4, a drawing die on a first end column 25 and rope winding and unwinding means 12 on a second end column 24, a tube 1 is the only thrustresisting member connecting the first and second columns and the chucking carriage is suspended from and runs on, a guide rail 7 mounted above the tube. The carriage 4 is moved for its working stroke by a motor 9 which rotates a drum 12 and winds a rope 5 which is passed around a pulley 4a on the carriage and has both ends secured to the drum. A smaller motor 3 which idles during the working stroke drives the drum for the return of the carriage by means of a rope 6 passing around pulleys 2 on the column 25. A tube to be drawn is fed from a stack 19 on to a mandrel 18 which moves the end of the tube through a drawing die (not shown) on the column 25 so that it can be gripped by a chucking device on the carriage. After drawing, the tube is released and directed by guides 22 into a trough 21. A change-over device for the mandrels 18 is carried by a third column 17 connected to the column 25 by a tube 16.
Patent GB-544980-A (GB)
Title: Improvements in and in the production of taps, dies and the like screw-threading tools
IPC: B24B3/18
Filed: 1940-11-07
Abstract: 544,980. Taps and chasers. COVENTRY GAUGE & TOOL CO., Ltd., HARLEY, S. J., and WAINWRIGHT, J. E. Nov. 7, 1940, No. 16199. [Class 83 (iii)] [Also in Group XXIII] In a method of and apparatus for forming threads on taps, dies, and like fluted screw-threading tools the relative axial movement between a rotating fluted blank B and a multiribbed grinding-tool A is progressively accelerated or retarded in predetermined steps during the times that the flutes of the blank are passing the tool. This results in progressively increasing mutilation of the threads from the full thread 21 to the end of the tap &c. B. If the progressive movement is a retarding one the tap is formed with progressively increasing leading flanks as shown in Fig. 3. When the tool A reaches the position shown in this figure the incremental movement is stopped and the remainder of the blank is threaded to a true pitch. If the progressive movement is a retarding one the thread approaches the full form by increase of the following flanks while by a combination of the two methods in successive operations the thread form shown in Fig. 5 may be obtained. In a machine embodiment, Fig. 1, the work head 2 is normally traversed by a lead-screw 3 engaging a nut 4 to which is secured a pinion 6 which is rotated to impart the incremental movement. For this purpose a cam 7 driven from the work spindle reciprocates a spring plunger 15 carrying a pawl 18 which drives a ratchet wheel 8 connected to the pinion 6 by change gears 19. The duration of the incremental movement is determined by an adjustable stop 20 on the wheel 8 which disengages the pawl at a predetermined point after which the thread grinding proceeds in the normal manner. In a modification the incremental movement is imparted to a rack bar having a taper surface actuating an auxiliary work-carrying head carried by the main work slide. By suitable modification of the taper surface, irregular incremental movements may be obtained. Specification 541,619 is referred to.
Patent GB-545049-A (GB)
Title: X-ray timing apparatus
IPC: H05G1/42
Filed: 1940-11-07
Abstract: 545,049. Control systems for X-ray tubes. FERRANTI, Ltd. (Ferranti Electric, Ltd.). Nov. 7, 1940, No. 16210. [Class 38 (iv)] Current supply to an X-ray photography tube is cut-off after a pre-determined energy consumption measured in milliampere seconds by means of a condenser C charged through a resistance R2 from the P.D. across a resistance R1 in series with the tube. The condenser voltage, e.g., overcomes the grid bias of a triode 10 which passes current to energize a relay 15 which de-energizes a main circuit contactor 4. To compensate the non-linear quality of the condenser charge curve a constant voltage is included in the charging circuit, e.g. from a potentiometer 18. The error due to time lag in the electromagnetic switches is compensated by a resistance R4 shunted by a condenser C2 which produces an EMF proportional to the rate of increase of potential of the condenser C and decreases the timing of all exposures by a constant amount. A control arrangement for a full-wave X-ray tube is shown in Fig. 6 which comprises also a constant potential resistance 39 and double-diode rectifiers 42 in the charging circuit of the condenser C. Resistances R5, R6 permit selection of exposure values and tapping 43 is adjustable to compensate the contact EMF of the rectifiers 42. Closure of push button 22 starts the exposure by energizing relay 23 through a slow heating diode 44 ensuring that the cathodes of the X-ray tube 9 and other discharge devices are fully heated. The relay 23 energizes the main contactor 4 and removes a short-circuit on the timing circuit. When the valve 10 becomes conductive a relay 15 opens the energizing circuit of the contactor 4. Electrostatic shielding means 45 may be provided in the low tension transformer T1. A half wave X-ray tube arrangement is also described. The valve 10 may be a gaseous discharge tube or a vacuum tube ; in the latter case adjustment of the control spring of the relay may serve to pre-determine the exposure.
Patent GB-754775-A (GB)
Title: Process for the production of filaments having improved properties as textiles
IPC: C08L33/20
Filed: 1954-06-01
Abstract: 754,775. Acrylonitrile polymer compositions. VEREINIGTE GLANZSTOFF-FABRIKEN AKT.-GES. June 1, 1954 [Nov. 6, 1953], No. 16238/54. Addition to 752,507. Class 2 (5). Filaments of improved abrasion resistance are spun from solutions of polyacrylonitrile or copolymers of acrylonitrile, e.g. a solution in dimethyl formamide, containing polyvinyl acetate and polyvinyl ethyl ether which have been added in solid or dissolved form to the solution during the course of its formation, the proportion of polyvinyl acetate being from 5 to 15 per cent, and the total proportion of polyvinyl acetate and polyvinyl ethyl ether not exceeding 30 per cent, calculated on the solids content of the solution.
Patent GB-1181934-A (GB)
Title: Dialysis Apparatus, inter alia for an Artificial Kidney
IPC: A61M1/24
Filed: 1968-04-04
Abstract: 1,181,934. Dialysis apparatus. COMMISSARIAT A L'ENERGIE ATOMIQUE. 4 April, 1968 [5 April, 1967], No. 16257/68. Heading B1X. Dialysis is carried out using one or more tubular membranes 3 (Figs. 2 and 3) of flattened cross-section, each membrane being surrounded by an impervious tubular sleeve 4, with netting 5 disposed between the membrane and the sleeve, and the three components being made of flexible material. The apparatus shown in Fig. 1 comprises four such dialysis tubes 1 arranged spirally in a box 2. When used as an artificial kidney, blood is introduced in parallel into the tubular membranes through tubes 17 at the centre of the box; and purifying liquid is introduced through duct 14 and chamber 10, into the annular spaces between the membranes and the sleeves. The blood and the purifying liquid flow through the apparatus in opposite directions, the purified blood being discharged through tubes 16. The sleeves 4 may be made of PVC, and the netting 5 may be made of polyethylene.
Patent GB-703719-A (GB)
Title: Process for the manufacture of insecticides
IPC: A01N25/20
Filed: 1951-07-10
Abstract: An insecticide is prepared by moulding at about 40 to 50 DEG C in an extrusion press, without added binder, or thermoplastic mixture of an insecticidally active agent and a smouldering agent which contains at most 50 per cent of the insecticidally active agent. Specified insecticidally active agents are dichloro-diphenyl-trichloromethyl-methane, dichloro-diphenyl-dichloromethyl-methane, hexachlorocyclohexane, 1, 2, 4, 5, 6, 7, 10, 10-octachloro-4, 7-endomethylene-4, 9, 7, 8-tetrahydroindane, pyrethum extract, rotenone, diethyl nitrophenyl thiophosphate, hexaethyl tetraphosphate, and mixtures thereof.  The smouldering agents may be mixtures of oxygen carriers such as chlorates, nitrates or chromates with combustible organic materials such as wood resin, wood flour, grain flour, starch and colophony. Ammonium salts such as ammonium chloride or the nitrates of urea, guanidine or melamine, may be added as filling materials and flame dampening substances.  Lubricants such as stearite and talcum and acid-binders such as alkali-metal or ammonium bicarbonate, hexamethylene tetramine and ammonium oxalate may also be added.  The moulded bodies, e.g. in the form of wires, small rods, candles or small capsules may be coated with an igniting composition; separate igniting means may be provided.
Patent GB-676436-A (GB)
Title: Method and equipment for applying semi-solid materials to walls or other structural surfaces
IPC: E04F21/12
Filed: 1949-06-20
Abstract: <PICT:0676436/III/1> Mortar, plaster or cement is applied to a wall surface 9 by feeding it under pressure from a supply tank or mixer 2 to a centrifugal pump 4 and thence through a flexible hose 7, to a spray nozzle 8.  Pressure may be supplied pneumatically or gravitationally from a raised supply tank 2.  The apparatus may be mounted on a truck.
Patent GB-896797-A (GB)
Title: Improvements in or relating to pulse-transmission circuit arrangements
IPC: H03K5/01
Filed: 1958-05-21
Abstract: 896,797. Transistor pulse-shaping circuits; multiplex pulse signalling. PHILIPS ELECTRICAL INDUSTRIES Ltd. May 21, 1958 [May 24, 1957], No. 16319/58. Classes 40(5) and 40(6). In a pulse transmission circuit comprising a pair of conductors one of which is earthed, the other conductor having the pulses applied thereto, the effects of stray capacitance between the conductors in deforming the pulses is reduced by connecting the emitter-collector path of a transistor across the circuit, the transistor being normally conducting but being rendered non-conducting at intervals by pulses applied to its base electrode in coincidence with the pulses carried by the transmission circuit. The invention may be applied to a time-division multiplex signalling system to prevent cross-talk between channels which may occur due to pulses becoming distorted so that they overlap or to prevent the occurrence of similar effects in a digital computer in which case the control pulses may be clock pulses. As shown in Fig. 1, pulses are applied to a transmission circuit comprising a line 1 from generators 41-44, each corresponding to one channel of a multiplex system. Due to stray capacitance 5, the pulses are distorted both by a curvature of their leading edges and by an overall lengthening. A transistor 6 is connected across the line 1 in such a polarity as to be conducting to the pulses on the line; however coincident with the desired portion of each transmitted pulse a control pulse is applied to the base of the transistor to render it non-conducting. Owing to charge-storage in the transistor, when it is initially cut off current continues to flow for a short time in the emitter circuit tending to reduce the curvature of the leading edges of the transmitted pulses, while unwanted lengthening of the pulses is prevented by the short-circuiting effect of the transistor. Figs. 2 and 4 (not shown) illustrate arrangements in which the transistor 6 is preceded by a common-base and a common-emitter transistor amplifier respectively, these transistors tending to increase the distortion suffered by the pulses. Fig. 5 shows a system including an amplifying transistor 10 in which the control pulses applied to the base of transistor 6 are derived from the transmitted pulses before they are amplified and distorted by the transistor 10. Reference has been directed by the Comptroller to Specification 725,396.
Patent GB-741250-A (GB)
Title: Vitamin b derivatives and a method of preparing same
IPC: A61K31/51
Filed: 1953-06-12
Abstract: The invention comprises compounds having the general formula: <FORM:0741250/IV(a)/1> wherein R1 is methyl or ethyl, R2 is an acyl group and R3 is hydrogen or an acyl group, and their acid salts, and the preparation thereof by reacting <FORM:0741250/IV(a)/2> at a non-acidic pH with an acylating agent, e.g. an acid anhydride or acid halide.  As acyl groups which may be introduced there are mentioned, acetyl, propionyl, butyryl, benzoyl, p-nitrobenzoyl, and carbalkoxyl. The reaction may be effected in water, alcohol, methanol or pyridine.
Patent GB-868821-A (GB)
Title: Improvements in jigs for washing coal
IPC: B03B5/24
Filed: 1956-05-28
Abstract: 868,821. Coal washing jigs. NORTON, A. T. May 28, 1957 [May 28, 1956], No. 16383/56. Class 82(2). A baum type jig has an inclined primary bed 2, a downstepped horizontal secondary bed 11 and a middle elevator extraction duct 6 with a weir 7a the minimum height of which does not substantially exceed the level at the upper end of bed 2. Rotary gates 5, 13 discharge the shales. An extra plate 8 may be used to increase weir height.
Patent GB-1474667-A (GB)
Title: Access control assembly
IPC: E05B49/00
Filed: 1975-04-21
Abstract: 1474667 Electronic locks INFORMATION IDENTIFICATION CO INC 21 April 1975 [9 May 1974] 16391/75 Heading E2A An electronic lock employs a key assembly comprising a key receiver capable of receiving a time division binary key code and a key code receiving and storage unit. As shown in Fig. 1 a key 12 plugs, at 64, 78, into a lock assembly 14 which has been encoded with a time division code to be matched. The key can receive, store and transmit a given code, the code being generated at remote station 16 connected electrically 18 or accoustically 20. In use, for instance when a lorry driver wishes to open his lorry at the end of a journey, he will telephone or radio a request to a central office for a key that he is holding to be encoded to suit the lock of the lorry he is driving. This encodement is then radiod or telephoned or conveyed accoustically at 20 as a timed sequence of binary bits from encoder station 16 to the key receiver assembly. To receive the key code, the key holder closes switch 34 to energise the key functions and also to energise the lock when the key is plugged in. The key code received by storage unit 24 is matched against clock signals from a data synchronisation assembly 26 to determine that it has the proper predetermined code format, and if so, it illuminates signal lamp 44 and retains the code in store. The key may now be plugged into the lock, whereupon the lock code generator 92, the decoder and comparator 94, and the lock control assembly 96, are energised, and a clock signal from 26 is fed into the recognition code generator and the decoder and comparator assembly. In response to the received clock signal, the recognition unit 92 sends a predetermined time division binary recognition code to key decoder assembly 28 in the key, which, if the format is correct, signals over path 52, to switch the storage unit 28 into its code transmission mode under control of the clock 42. This signal is received by unit 94 of the lock and compared with the predetermined code permanently encoded in itself. If the codes do not match, a signal is sent which destroys the code in storage unit 24. If the code is correct, the lock control unit 96 is signalled to unlock the device and also to transmit a signal destroying the key code. Logic circuits to achieve this are described in detail.
Patent GB-959424-A (GB)
Title: Improvements in or relating to printing machines
Inventor: PARROTT JOHN REES
IPC: B41L39/00
Filed: 1962-05-01
Abstract: 959,424. Delivering sheets. MARDON, SON & HALL Ltd. April 25, 1963 [May 1, 1962; May 1, 1962], Nos. 16551/62 and 16552/62. Heading B6H. In apparatus for controlling sheets issuing from a printing machine, the sheets are fed across a convex surface formed by a suction roller 10, Fig. 1, or a vacuum box 15, Fig. 3, mounted at a predetermined distance from an optical scanning head 8. A nozzle 18 may be used to direct an air jet against the upper surface of the sheet 14 to ensure attraction by the vacuum. The scanning head 8 may be a photo-electric device for detecting the quantity of ink supplied to the sheet. In a modification, Fig. 4 (not shown), the suction orifices 11 of the roller 10 are formed on the edges of the roller, and a recess between them is used to retain a " pass " copy of a printed sheet to check tho control setting of the scanning head 8. A brush may be provided to remove dust from the " pass " copy every time the roller 10 rotates.
Patent GB-264073-A (GB)
Title: Improvements in puncture-resisting pneumatic tires
IPC: B60C11/00
Filed: 1926-07-02
Abstract: 264,073. Krusemark, F. A. July 2, 1926. Tyres with cooling means; tread bands.- A tyre cover is formed with a thick tread 2 having transverse passages 3 opening at the sides of the tread into enlarged cavities 4. Ribs 6 may be formed around the mouths of the passages 3.
Patent GB-783848-A (GB)
Title: Aqueous micro-crystalline insecticidal dispersions
IPC: A01N25/30
Filed: 1956-05-30
Abstract: An aqueous microcrystalline insecticidal dispersion comprises water having incorporated therein a composition obtained by mixing molten DDT or benzene hexachloride with a salt or mixture of salts of sulphated butyl oleate, the water preferably being between 30 to 200 per cent by weight of the composition.  Zinc stearate and an electrolyte, e.g. sodium chloride may also be incorporated.
Patent GB-638057-A (GB)
Title: Apparatus for measuring the level of the surface between two liquids of different densities in a container
IPC: G01F23/16
Filed: 1948-06-23
Abstract: 638,057. Liquid-level indicators. DOBBIE McINNES, Ltd., and MORE, J. June 23, 1948, No. 16837. [Class 123(i)] A method and apparatus for determining the level of the surface 4 between two liquids 2, 3 of different densities in a container 1 and used e.g. to ascertain the depth of water that has entered an oil tank by leakage, comprises taking pressure readings at two levels respectively above and below the intermediate surface and at a known distance apart. The difference reading so obtained is used to determine the position of the intermediate surface by comparing it with the pressure value for one of the liquids which may be calculated knowing the density of that liquid and the distance between the bells 5, 6.