baber/WOPTO huggingface dataset:
Patent GB-477679-A (GB)
Abstract: 477,679. Photo-electric control of fuel supply for burners. SUPERHEATER CO., Ltd. July 5, 1937, No. 18623. Convention date, July 4, 1936. [Class 40 (iii)] [Also in Groups XI and XII] Relates to safety devices for boiler &c. heating installations, in which the supply of fluid or pulverized fuel to the burner is automatically cut off when the flame is extinguished. According to the invention, the supply of fuel is controlled by two devices such as valves 6, 7, both of which are under the control of a light-sensitive device 8 which responds to the influence of light from a flame in the furnace chamber, and one of the devices such as the valve 6 being also under manual control. The arrangement shown, where the devices 6, 7 are valves in an oil conduit 5, is such that in order to allow oil to pass to the burner 4, the valve 6 must first be manually opened and light from an igniting flame must be allowed to fall on the photo-voltaic cell 8 ; thereupon by the action of a relay or the like 12 controlled by the cell, the valve 7 is opened, and both valves 6, 7 are retained open so long as light from the furnace chamber falls on the cell 8. Both valves close automatically when the cell 8 ceases to be influenced by a flame. The operating spindle of the valve 6 carries an armature which, when the valve has been opened by means of a handle 10, is moved close to or in contact with the poles of an electromagnet. When this is energized through the relay 12 controlled by the cell 8, it is able to keep the valve open, though it has insufficient strength to attract the armature before the valve has been opened by hand. The valve 7 is under the sole control of the relay, and both valves are closed automatically, e.g. by springs, when the cell 8 is inoperative. The cell may be fixed at the end of a tube 16 directed towards the burner 4 ; mirrors may be used if necessary. The valves may be controlled by several photo-electric cells operating simultaneously. Expansion traps 17, 18 may be provided at the bottom or the top of the combustion chamber 2, to provide a safeguard against explosion. There is a small opening 21, for draining off unburnt fuel. The handle 10 may be actuated by connection with means for introducing the firing flame. Instead of controlling valves in the fuel feed conduit, the photo-electric cell may otherwise control the fuel supply, e.g. by controlling a motor for pumping fuel to the burner.
Patent GB-1280162-A (GB)
Title: Improvements relating to the production of bevel gears
IPC: B23F9/10
Filed: 1969-10-01
Abstract: 1280162 Gear cutting; indexing GLEASON WORKS 1 Oct 1969 [1 Oct 1968] 48233/69 Headings B3B and B3K A gear cutting machine has a workhead assembly 40 slidably arranged on upstanding sidewall members 36 the work spindle 42 axis being arranged generally vertically and below a horizontally disposed cradle 32 and face-milling cutter holder 34. The work spindle is arranged to be pivotable within a limited range from the vertical to an inclined position. As shown, Fig. 1, the machine may be double, i.e. providing two cutting stations 24 and two such double machines with suitable work transfer and conveyer means may be arranged to provide automatic machining of gear blanks at two roughing stations and two finishing stations (Fig. 4, not shown). For the cutting of spiral bevel and hypoid gears the cradle 32 and work spindle are driven by an hydraulic motor 118, the relative rotation of the cradle and spindle being determined by a generating train 52, 54, ..., 88, 92. The speed and direction of motor 118 are regulated by control valve means actuated differentially from a control cam 162 on the one hand and the generating train on the other hand. Thus cam 162 controls the displacement of a screw and nut assembly 166, 168 to displace a control valve actuating lever while at the same time screw 168 is rotated by a suitable gearing from the drive shaft 120 in a direction to move axially relative to the nut 166 in the opposite direction and thus to restore the control valve to its neutral position. Thus a given rotation of cam 162 produces a fixed proportionate rotation of the cradle and correspondingly of the work spindle. Where tooth cutting occurs in both directions of roll the ratio of roll between the cradle and work spindle may be altered slightly in one direction by means of a cam 206 driven through gearing 200, 202, 204 from the drive shaft 120 the cam 206 being adapted to shift in its axial direction a drive worm 54 for the cradle. Axial motions of the cradle may be effected either by a feed cam 156, e.g. for indexing or by a helical motion mechanism in which drive is taken from the cradle via gear 190 and used to drive a cam which shifts the cradle axially for axial feed during cutting of a gear. An indexing mechanism 96 is provided comprising an hydraulically reciprocable rack 98 operation of which (and simultaneously of an hydraulically actuated clutch 104, 105) produces a predetermined increment of rotation of a differential spider 116 which in turn produces a desired rotation of the work spindle relative to the cradle. A locking pawl 110, normally engated with a locking disc 112 in the index mechanism is released for the indexing operating.
Patent GB-1014154-A (GB)
Title: Improvements in and relating to laminates
IPC: B32B15/08
Filed: 1962-12-20
Abstract: 1,014,154. Laminates. UNION CARBIDECORPORATION. Dec. 20, 1962 [Jan. 8, 1962], No. 48235/62. Heading B5N. Laminates which possess the property of cold forming without substantial elastic recovery and which according to the invention are subjected to cold bending, embossing or drawing, comprise thermoplastic sheets of thickness 0À005-1À4 inches having bonded to each face thereof a metal foil, e.g. of aluminium, steel, copper or brass, of thickness 0À00025- 0À01 inch, the combined thickness of the foils being less than that of the core material. The foils in any one laminate may be of different metals and different thicknesses. The thermoplastic materials usable comprise polythene, polypropylene, polystyrene, polyamides, polycarbonates, vinyl aryls, vinylidene halides, vinyl esters, acrylic acid and acrylic acid nitrile polymers, and alkyl esters of maleic or fumaric acids; many examples are given. A particular material mentioned is the thermoplastic polyether poly-2,2-bis-(oxyphenyl) propane. The materials may be foamed. The laminates may be made by coating the foils with a thin layer of the core material and then hot pressing the assembled layers. Cold-forming may be effected on the site of use and products so made may include cooling and heating ducts and thermal and sound insulating components.
Patent GB-1592075-A (GB)
Title: Flash butt welding
IPC: B23K11/04
Filed: 1977-11-21
Abstract: Welding pieces to be welded together and connected to a secondary winding of a welding transformer are constantly moved against one another with variable speed, are heated during the flashing action and are plastically deformed by upsetting. The primary winding of the welding transformer is connected to a square-wave alternating-current power source, the frequency of the alternating current being varied during the flashing action. Such a process enables the welding time to be shortened, the flashing to be reduced and the capacity to be installed of a mobile power source to be considerably reduced. <IMAGE>
Patent GB-1115230-A (GB)
Title: Supporting means for electromagnetic recording head
Inventor: BREWSTER ARTHUR EDWARD
IPC: G11B5/60
Filed: 1966-10-28
Abstract: 1,115,230. Magnetic recording heads; supporting. STANDARD TELEPHONES & CABLES Ltd. 28 Oct., 1966, No. 48371/66. Heading G5R. A support for an electromagnetic recording head 1 includes a cantilever leaf-spring 5. arranged to bias the head towards a magnetizable surface 6 and to carry the connecting leads 9, and a duct 12 through which air is forced to lift the head away from the surface. As shown, the head consists of a linear array of wound soft iron cores 2 potted in resin with the winding leads 9 taken along the spring 5 for connection to a tagboard or printed circuit 10. The leads 9 may be protected by a cover 11 acting with the spring 5 to form a composite leaf-spring, and the space between the cover and spring resin-filled. The surface consists of a magnetizable film 6 carried on a rotatable drum 7 and is used for recording a matrix of magnetic dots.
Patent GB-1282084-A (GB)
Title: Process for the preparation of direct positive photographic silver halide emulsions
IPC: G03C1/485
Filed: 1970-10-12
Abstract: 1282084 Preparation of direct-positive silver halide emulsions E I DU PONT DE NEMOURS & CO 12 Oct 1970 [13 Oct 1969] 48430/70 Heading G2C A direct-positive photographic silver halide emulsion is prepared by (a) adding 3À33-15 millimoles of a water-soluble inorganic iodide per mole of silver halide to a redispersion in an aqueous medium of a precipitated, ripened and washed water-permeable colloid silver chlorobromide or silver bromide emulsion, and (b) adjusting the pH to 5-9 and digesting the emulsion at 43  to 66C. for 15 to 60 minutes, there being added during digestion of the emulsion per mole of silver halide 0À00033g to 12À0g of an amine borane as a fogging agent and after digestion is complete 10-100 mg of an optical sensitizing dye per mole of silver halide. The colloid is preferably gelatine. The amine borane may have the formula: - R 1  R 2  R 3  N: BH 3  wherein R 1  is 1-20C alkyl and R 2  and R 3  are each H or 1-20C alkyl. The sensitizing dye may be 4 (1, 3, 3-trimethylindolidinyl)-#-ethylidene-(3-methyl-1 p-sulphophenyl)-5-pyrazolone, 2-(3-ethyl-thiazolylidenyl)- #-ethylidene-3-carboxymethyl- 5-rhodanine, 4- (p-dimethylamino benzylidenyl)-3-methyl-1-psulphophenyl-5-pyrazolone, 1, 3, 3-trimethyl- 3'-ethiodide-oxacarbocyanine or 3, 3'-(2- carboxyethyl)-5, 6, 5', 6'-tetramethyl benzoxazole carbocyanine. These direct-positive emulsions have increased speed over known emulsions. Reference is made to Specifications 1, 097, 999 and 1, 076, 296.
Patent GB-1376590-A (GB)
Title: Vehicle having a windscreen washing installation
IPC: B60S1/52
Filed: 1973-10-18
Abstract: 1376590 Windscreen cleaning systems DAIMLER-BENZ AG 18 Oct 1973 [21 Oct 1972] 48683/73 Heading A4F Nozzles 3 discharging windscreen washing liquid are mounted on a vehicle adjacent the lateral sides of the windscreen. The nozzles 3 are preferably multi-jet and their mean spray direction is approximately at right angles to oscillatable windscreen wiper blades 5 when these are in their mean positions, or is slightly inclined downwardly.
Patent GB-1002632-A (GB)
Title: Electrical signal amplifier
Inventor: YOUNG FRINK MANSFIELD
IPC: H03F3/387
Filed: 1962-12-27
Abstract: 1,002,632. Transistor amplifiers. ADAGE Inc. Dec. 27, 1962, No. 48722/62. Heading H3T. The invention relates to supply arrangements for D.C. amplifiers and more particularly for amplifiers having a high input impedance. A basic circuit arrangement according to the invention is illustrated in Fig. 1, in which input signals are applied through a network 24 to a D.C. amplifier 28 feeding a transistor output stage 34 having a constant current emitter supply, the circuit having common input, output and supply terminals 12, 16 and 18 and a D.C. supply for the amplifier comprising two stabilized voltage sources 44 and 46 with a common point connected to an output terminal 14. Fig. 2 shows more details of this circuit. The input terminal 10 is connected to a main D.C. amplifier 28 through an A.C. path comprising capacitor 50 and through a chopper type D.C. amplifier 60, 66 described later. The output from the main amplifier 28 is fed to a transistor 34 having output terminal 14 connected to its emitter. The emitter supply is obtained from a constant current source 38 formed from a transistor 88 having a constant current emitter supply provided from a Zener diode 90 and resistor 96. The collector-emitter voltage of transistor 34 is maintained constant by a series transistor 80 operated as an emitter follower with its base coupled through a constant voltage source 86 to the emitter of transistor 34. This constant voltage source comprises a 10-volt Zener diode fed with a constant current supply from a source 84. The constant 10 volts with reference to the emitter of transistor 34 which exists at the emitter of transistor 80 is used as a supply voltage for circuits 60, 64 and 28. A five-volt Zener diode 76 reduces this ten volts to five volts and this is used as a supply for amplifier 28. A multivibrator 64 operates a chopper 62 and a demodulator 66, the chopper being connected in a negative feedback path from output terminal 14 to the input terminal. When the transistor 34 has to operate from a higher voltage supply, further transistors may be added between the battery 22 and transistor 80 (Fig. 3, not shown). A diode 118 prevents false operation of the amplifier when the load is capacitive and a feedback circuit 120 improves the stability of the circuit. In addition overall feedback may be provided, for example, to make the circuit into an "operational" amplifier (Figs. 4 and 5, not shown).
Patent GB-1516235-A (GB)
Title: Coagulated egg-white foodstuffs
IPC: A23L15/00
Filed: 1976-11-23
Abstract: 1516235 Coagulated egg white products KEWPIE KK 23 Nov 1976 [5 July 1976] 48831/76 Heading A2B A coagulated egg white product comprises at least 70% of coagulated egg white, I to 15% of an edible organic water-binding agent, 0.1 to 1.0% of a vegetable gum or carboxymethyl cellulose, and 2 to 15% of a starch hydrolysate. The water-binding material may be corn, rice or potato starch, wheat flour or a marine colloidal material such as algin, agar-agar or carrageenan. The gum may be guar, tragacanth, xanthan or tamarind. The starch hydrolysate may be dextrin having a D.1. of 5 to 25 or dextrin alcohol having a D.1. of 12. The egg white may be from chicken, quail, duck or goose eggs. The product is made by mixing liquid egg white with the other constituents and heating.
Patent GB-1417843-A (GB)
Title: Disc brake systems
IPC: B60T11/24
Filed: 1972-10-24
Abstract: 1417843 Hydraulic systems; disc brakes AUTOMOTIVE PRODUCTS Ltd 19 Oct 1973 [24 Oct 1972] 48938/72 Headings F2E and F2F A dual hydraulic brake system includes disc brakes of which the discs 1 have braking surfaces liable to axial displacement (as indicated by the dotted lines in Fig. 1) relative to fixed calipers 2 because of heat expansion of the discs 1 in service: to compensate for this any given line (e.g. 6) of the system operates brake cylinders in the calipers 2 that are affected oppositely by such displacement so that the greater travel of the piston required in one cylinder is compensated by the smaller travel required in the other. In the system illustrated, a vehicle has front discs 1 of top hat section and conventional rear drum brakes. A master cylinder 4 serves through one set of lines 6 the offside (right-hand) drum brake 3, the inner (relative to and away from the adjacent vehicle wheel) cylinder of the rearside (left-hand) disc brake and the outer cylinder of the offside disc brake; and through another set of lines 7 the nearside drum brake 3, the inner cylinder of the offside disc brake and the outer cylinder of the nearside disc brake. Other arrangements are possible on a vehicle with disc braking on more than one axle, or with two or more pairs of calipers or cylinders to a disc. For example connections may be made front to rear on a vehicle with discs all round on the same side or diagonally.
Patent GB-1150369-A (GB)
Title: Improvements in or relating to Seals
Inventor: HART JESSE STANLEY
IPC: F16J15/10
Filed: 1967-10-27
Abstract: 1,150,369. Fire-resistant seals. ROLLSROYCE Ltd. 27 Oct., 1967, No. 49008/67. Heading A5A. [Also in Divisions, F2 and H2] A fire and fume-resistant seal 10 for an aperture 14 in a partition 15 comprises a cylindrical housing 11 in two identical parts 11 a, 11b having radially extending flanges 12 for attachment to the partition, said housing having disposed therein a sealing member 18 sandwiched between two further sealing members 19a, 19b. The housing may be metal, the (fume seal 18 silicoine rubber, and the seals 19a, 19b, fire-resistant material. The seal may be used in the bulkhead of a gas turbine engine.
Patent GB-1069737-A (GB)
Title: Vulcanizable olefin copolymers
IPC: C08F210/18
Filed: 1964-12-03
Abstract: High molecular weight linear amorphous unsaturated vulcanizable copolymers of ethylene and at least one aliphatic alpha-olefin of the formula R-CH=CH2, where R is a Cl to C6 alkyl group, and at least two monomers belonging to two or more of the following classes, alkenyl cycloalkenes, non-conjugated cyclic polyenes, non-conjugated aliphatic dienes and cyclic mono-olefines, of which at least one of the monomers is selected from the last two classes are made by copolymerizing the monomers in the presence of a halogen containing catalyst obtained from a vanadium compound and an organometallic compound of aluminium or beryllium.  The catalyst and the copolymerization are preferably effected between 0 DEG  and - 80 DEG C.  The catalyst may contain a complexing agent such as an ether, thioether, tertiary amine, or trisubstituted phosphine.  The copolymerization may be effected in a hydrocarbon or halogenated hydrocarbon solvent. The Specification specifies many monomers belonging to the above-mentioned classes.  A preferred monomeric mixture of compounds of these classes is cyclooctadiene-1,5, cyclooctene, octadiene-1,7, and 4-vinylcyclohexene-1, which mixture is obtained by the partial hydrogenation of cyclooctadiene, and subsequent pyrolysis of the product.  The Specification also contains long lists of suitable catalyst components. The following monomeric mixtures are exemplified (1) ehtylene, propylene, cyclooctadiene-1,5 and octadiene-1,7, (2) ehtylene, propylene, cyclooctene, and octadiene-1,7, (3) ethylene, propylene, cyclooctadiene, cyclooctene, octadiene-1,7, and 4-vinyl-cyclohexene-1, and (4) ethylene, butene-1, cyclooctadiene-1,5 and octadiene-1,7.  The copolymers may be vulcanized by conventional techniques.
Patent GB-1386060-A (GB)
Title: Oxygenated alicyclic compounds useful as odoriferous and flavouring agents
IPC: A23L27/20
Filed: 1973-10-26
Abstract: 1386060 Flavourings FIRMENICH SA 26 Oct 1973 [26 Oct 1972 21 March 1973] 49983/ 73 Headings A2B and A2C [Also in Divisions A5 and C2] Foodstuff and tobacco compositions contain a compound of the formula: where X is -CO-CHR<SP>2</SP>-CR<SP>3</SP>=CHR<SP>4</SP>, -CO-CR<SP>2</SP>= CR<SP>3</SP>-CH 2 R<SP>4</SP> or -CO-CHR<SP>2</SP>-CHR<SP>3</SP>-CHR<SP>4</SP>, R<SP>1</SP> is H or alkyl of 1-6 carbon atoms, R<SP>2</SP>, R<SP>3</SP> and R<SP>4</SP> are H or one of them may be alkyl of 1-6 carbon atoms, the ring is saturated or contains 1 or 2 double bonds in the positions indicated by the dotted lines and Z represents a double bond oxygen atom, or, when the ring contains one double bond at position 1, 2 can represent a hydroxyl group and a hydrogen atom both at position 4 of the ring.
Patent GB-1365480-A (GB)
Title: Profile cutting machine
IPC: B23Q35/10
Filed: 1970-10-28
Abstract: 1365480 Cutting by fusion DRILLFIELD ENG CO Ltd 7 Got 1971 [28 Oct 1970] 51158/70 Heading B3V A machine for profiling an end of a branch pipe 20 which is to be joined to an apertured main pipe, includes a chuck 10 for mounting a master 19, in the form of a pipe or rod having the same external diameter as the main pipe, for rotary movement about an axis transverse to its length and for pivotal adjustment about an axis 15 perpendicular to its length, a chuck 11 for rotating the pipe 20, a follower 21 for following the outer surface of the master 19 to trace a closed path thereon and a cutting element (not shown) connected to the follower 21. A stylus 21 is connected to a sleeve 22 movable along a slideway 23 which is slideable along rods 26, 27 and connected to a bracket 28 carrying a cutting torch via a rack (32) (Fig. 2, not shown) and pinion (33). In operation, the slideway 23 is unlocked from the rods 26, 27<SP>1</SP> by a device 35 to cause the bracket 28 and slideway 23 to be moved to the right by a spring (30) until the stylus 21 engages the master 19. The chucks 10, 11 are rotated at the same speed by a motor 13 whereupon the slideway 23 is moved along the rods 26, 27, such movement being transmitted to the torch. The master 19 is mounted in a clamp 14 which is pivotable relative to the chuck 10 about an axis 15 to enable profiling of the pipe 20 according to the angle to which it is to be joined to the main pipe. The slideway 23 is movable along the rack (32) by means of a handle 34.
Patent GB-1087858-A (GB)
Title: Switching circuits using two terminal negative resistance devices
IPC: H03K17/58
Filed: 1964-12-17
Abstract: 1,087,858. Electronic counters; shift registers. RADIO CORPORATION OF AMERICA. Dec. 17, 1964 [Dec. 23, 1963], No. 51364/64. Headings G4A and G4C. [Also in Division H3 Each stage of a shift register comprises a bistable circuit (Fig. 1) having two transistors 20, 30 in series with tunnel diodes 28, 38 across a current source 40. Initially assume transistor 20 is conducting, tunnel diodes 28 and 72 are in high-voltage states and tunnel diodes 38 and 70 are in low-voltage states. A negative clock pulse at 74 switches tunnel diode 72 to its low-voltage state but has no other effect. If there is a positive pulse present at 86 (the other inputs 88, 98, 100 not being used in this application) when the clock pulse reverts to 0.5 v., the tunnel rectifier 104 will not conduct but tunnel diode 70 will switch to its highvoltage state; tunnel diode 72 requires more current than 70 and will not be switched. The rise in base voltage of transistor 20 cuts it off and all the current from 40 flows through transistor 30, so that tunnel diodes 28, 38 reverse their states and the outputs at 42, 44 change over. The output is delayed with respect to the clock pulse by the switching time in transistors 20, 30, which however are never saturated. The next negative clock pulse switches tunnel diode 70 to its low-voltage state but has no other effect. At the end of the clock pulse, if there is no input at 86, tunnel diode 72 is switched to its high-voltage state and 70 remains in its low-voltage state due to the current path through tunnel rectifier 104. The base voltage of transistor 20 now falls and current from 40 is diverted from transistor 30 to 20. The state of tunnel diodes 28, 38 and the output signals at 42, 44 thus revert to their former condition. For use as a stage in a counter (Fig. 7) the input is applied to the two bases 26, 36 in parallel, each base being connected to earth through a tunnel diode 70, 150, these being switched alternately from one state to the other by the input pulses. Each transistor has a series LR feedback circuit 148, 154 from collector to base so that a portion of the collector current flows through the tunnel diode connected to its base. The tunnel diode that is already passing this current is therefore switched by the input pulse while the other tunnel diode is not switched. The inductance in the feedback path maintains sufficient current through the tunnel diode so that it does not change its state until the switching transients have finished. As in Fig. 1, further tunnel diodes in the collector circuits stabilize the output signal level.