baber/WOPTO huggingface dataset:
Patent GB-309966-A (GB)
Title: Improvements in and relating to processes for the production of crystalline cuprous oxide upon copper surfaces
IPC: C23C8/12
Filed: 1927-12-14
Abstract: 309,966. Croad, A. K., (Hanovia Chemical & Manufacturing Co.). Dec. 14, 1927. Coating.-In a process for producing a crystalline cuprous oxide coating on a copper surface by subjecting cleaned and polished copper within a sealed furnace to a gaseous medium which includes oxygen and whose temperature is raised, and maintained within 58‹ C. of the melting point of copper, the partial pressure of the oxygen is maintained, during the rise in temperature, sufficiently low, below 15 mm. of mercury, and is then raised to a predetermined amount, not exceeding 200 mm. of mercury, and for a predetermined time from 5 to 15 minutes, to effect the formation of a cuprous oxide coating. The pressure is then lowered to a low value, below 15 mm. of mercury, during the cooling stage to prevent further oxidation of the copper, by flushing out the furnace with an inert gas or gases such as nitrogen, argon, neon or helium.
Patent GB-446023-A (GB)
Title: Improvements in or relating to containers and closures therefor
IPC: B65D45/32
Filed: 1934-11-26
Abstract: 446,023. Securing container lids. DAVIES, T., Widnes Iron Works, Widnes, Lancashire. Nov. 26, 1934, No. 33891. [Class 125 (iii)] A closure strap for securing a lid on the beaded rim of a metal drum or other con. tainer is made of spring steel of channel section, and the ends are split into tongues, two of which, 17, 18, overlap, the other two 19, 20 being bent up so as to abut together. A sealing-wire is passed through perforations in the tongues 19, 20. The section of the channel is such that pressure is exerted on the rim of the lid to effect a tight closure by the resilience of the strap.
Patent GB-1512259-A (GB)
Title: Heat exchange boilers
IPC: F22B1/18
Filed: 1975-08-15
Abstract: 1512259 Boilers DR C OTTO & COMP GmbH 15 Aug 1975 [11 Oct 1974] 34002/75 Heading F4A In a boiler the heat obtained from a gas flowing through an inner pipe 1 leading from a nuclear reactor is used to superheat a cracking gas such as helium flowing through an inlet ring main 9 through a heat exchanger 3 to an outlet ring main 12. The cooled gases pass through an annular chamber 29 and back to the nuclear reactor through an apron 6 and a compressor 7 through an annular chamber 30 formed by the coaxial pipes 1, 8. Above the heat exchanger 3 is a cooler 4 which cools the gas passing through the inner boiler chamber 2, the cooler 4 also acting as a steam generator. Figure 3 illustrates an enlarged view of the pipeline 13 passing through a jacket tube 14 welded to the wall of the boiler 5 and a concrete jacket 27 encloses the boiler 5. Deflector tubes 19, 20 provide chambers 21, 22 and 23 through which the gases traverse.
Patent GB-213949-A (GB)
Title: Improvements in jib cranes
IPC: B66C23/72
Filed: 1923-07-06
Abstract: 213,949. Stothert & Pitt, Ltd., Toplis, C. M., and Padfield, W. W. July 6,1923. Jib cranes.-The lower end of the jib A is bifurcated, the power house E is arranged between the two branches, and the jib is luffed by rotating cranks G connected to it by links F. Weights a balance the jib in all positions.
Patent GB-206394-A (GB)
Title: Improvements in hammer heads and in the manufacture thereof
IPC: B25D1/04
Filed: 1922-12-15
Abstract: 206,394. Wynn, Timmins, & Co., Ltd., and Vanhagen, W. F. Dec. 15, 1922. Hammers.- A hammer head d of the kind having an eye c for the reception of the handle f is formed with side claws e opposite to the eye. The head is preferably made complete in one operation by a drop forging process. Short semi - circular langets g may extend from the eye c.
Patent GB-500865-A (GB)
Title: Improvements in or relating to electron discharge device audio amplifiers
IPC: H03G5/06
Filed: 1938-11-24
Abstract: 500,865. Valve' amplifying circuits. CHART, F. J. Nov. 24, 1938, No. 34258. Convention date, Nov. 24, 1937. [Class 40 (v)] The load impedance for an audio frequency amplifier stage comprises a resistance in series with a parallel tuned circuit and a second parallel tuned circuit so associated with the first tuned as to be effectively in parallel therewith. Fig. 3 shows a push-pull amplifier with the circuits LC, L1 C1 capacitively coupled, alternatively magnetic coupling may be used and an adjustable shunt resistance R3 may be provided as well asthe series resistance R. The capacitive coupling between the circuits may be varied and in a push-pull circuit the anode load impedance is preferably divided to give push-pull balance. Fig. 8 shows a single valve arrangement in which the voltage across the tuned portion of the load impedance is applied to the valve V4 through a resistance-capacity coupling while the voltage across the whole of the impedance is applied through a similar coupling to the valve 2 thus establishing two audio frequency channels.
Patent GB-790027-A (GB)
Title: Process for the manufacture of ceramic objects
Inventor: TOMKINS DAVID ERWIN
IPC: B28B1/26
Filed: 1955-11-30
Abstract: 790,027. Injection-moulding ceramic articles: refractory compositions. SHENANGO CHINA, Inc. Nov. 30, 1955, No. 34311/55. Classes 22 and 87(2). A ceramic slip is injected into a porous mould 10 through pipes 14, 12 and valve 13. The mould parts are closed by a cylinder 20, and when the pressure builds up in the cylinder a switch 37 is actuated, causing valves 13, 24 to be moved to positions such that fluid pressure is applied to a flexible diaphragm 16 to apply pressure to the slip in the mould and force water out of the slip through fibreglass pipes 18. It is stated that this pressure expels not only the liquid of suspension but also the " shrinkage" liquid. After a short time, compressed air is supplied to the pipes 18 to facilitate release of the moulded article, e.g., a bowl, brick or tile. Prior to moulding, the inner surfaces of the mould may be spattered with a coloured slip. In a modification, Fig. 3, (not shown) the mould parts may be held together by clamps. Differently coloured slips may be injected successively. The clay slip may comprise (parts by weight) Pennsylvania Flint, 28À5 ; Potash Feldspar, 13À9 ; Marble, 1À5; Ball Clay, 7À5; Kaolin, 8À2; English China, 15À4 ; water 25À0.
Patent GB-462857-A (GB)
Title: Improved method and apparatus for the cleaning of heat interchanger elements and the like by pressure fluid
IPC: F23J3/02
Filed: 1935-12-11
Abstract: 462,857. Soot blowers. ATKINS, G. R., and IMPERIAL CHEMICAL INDUSTRIES, Ltd. Dec. 11, 1935, No. 34410. [Class 99 (ii)] A soot blower, for cleaning the tubular &c. elements of a preheater &c. of the kind in which the elements rotate about a common axis, comprises a nozzle 13 which is transversed radially across the elements by the rotary motion of the preheater itself. The traversing movement of the nozzle is preferably effected by a cam 2 which is located on the preheater casing 1 and engages, once during each revolution of the latter, a roller 3 mounted on an arm 4 which is pivoted at 5 and is subjected to the pressure of a spring 6. The arm 4 carries a pawl 8 for engagement with a ratchet segment 7 which is connected through links 9, 10, 11 with a pipe 12 terminating in the nozzle 13, pressure fluid, e.g. compressed air, being supplied to the pipe 12 by a pipe 14 provided with a control valve 27. At the commencement of blowing, the ratchet 7 is against a stop 16 and the nozzle is at the periphery of the rotor. With each revolution of the preheater the cam 2 first rocks the arm 4 to cause the pawl 8 to ride over a tooth of the ratchet and then permits the spring 6 to rock the arm in the opposite direction, the pawl 8 actuating the ratchet and with it the nozzle tube 12 thus effecting a step-by-step movement of the nozzle towards the axis of the preheater. When the nozzle reaches the end of its travel the air supply is cut off by a weighted lever 21 which is released by a pin 18 carried, by a member 19 on the link 11 through a lever 20. Backward movement of the ratchet during operation of the blower is prevented by a second pawl 29, and during inoperative periods the roller 4 is shifted out of the path of the cam 2 and the pawls 8, 29 away from the ratchet 7 by a hand lever 26.
Patent GB-1436376-A (GB)
Title: Isoquinoline derivatives isoquinoline derivatives
IPC: C07D217/16
Filed: 1973-07-19
Abstract: 1436376 Isoquinoline derivatives E I DU PONT DE NEMOURS & CO 19 July 1973 [20 July 1972 1 June 1973] 34438/73 Heading C2C The invention comprises compounds of the formula where R<SP>1</SP> is C 1 -C 6  alkyl, benzyl, phenethyl or cycloalkylmethy of the formula -CH 2 CH(CH 2 ) n  where n is 2-5, R<SP>2</SP> is divalent oxygen, A is H or OH, Ar is a group of the formula where R<SP>3</SP> is H, OH, OCH 3  or acetoxyl, R<SP>4</SP> is OH, OCH 3  or acetoxyl or two of R<SP>3</SP> or of R<SP>4</SP> situated on adjacent carbons may be combined to form a divalent methylenedioxy group, and pharmaceutically acceptable acid addition salts thereof. Compounds wherein A is H and R<SP>2</SP> is or may be prepared by reducing the corresponding 1,3-diketo decahydroisoquinoline. Compounds wherein A is OH and R<SP>2</SP> is or may be prepared by reducing the corresponding 1, - diketo - 8,8a - epoxydecahydroisoquinoline. The products may be converted into compounds having different R<SP>2</SP> values by known methods.
Patent GB-1400396-A (GB)
Title: Workpiece clamping device
IPC: B25B5/06
Filed: 1971-07-23
Abstract: 1400396 Releasable fastenings ROLLSROYCE (1971) Ltd 21 July 1972 [23 July 1971] 34570/71 Headings E2A and E2B [Also in Division B3]  A workpiece clamping device comprises a base plate 1 for application to a work table 6, a clamping means on a first surface of the base plate for clamping the workpiece 30 to the base plate, and vacuum clamping means for clamping a second surface of the base plate 1 into contact with the work table 6, the base plate having a main recess 8 provided in the said second surface and a rebate 14 provided around its periphery to form a corner 16 spaced from an edge 10 in contact with the surface of the work table 6, there being provided a resilient sealing member 20 having its complete periphery extending past the corner 16 into the rebate 14 and means for urging the sealing member into the recess 8 in a direction normal to the plane of the work table to create a vacuum therebetween, said urging means being conected to the clamping means so that operation of the clamping means to clamp a workpiece to the base plate also causes the vacuum clamping of the base plate to the work table. The workpiece clamping means comprises a clamping bar assembly slidable on two columns 2, 3, the column 2 being screw connected to a metal collar 26 attached to a metal disc 24 reinforcing for the rubber sealing member 20. Rotation of an eccentric 52 by a handle 48 raises the column 2 as the workpiece is clamped. The clamping bar assembly comprises two side plates and an end clamping part, and two pivotable blocks 43, 44 mounted between the side plates. The blocks have cut outs 47, 49 to provide short cylindrical engaging surfaces on one side of the columns 2, 3 to provide a friction jamming lock when rotated in one direction, and free sliding movement on the columns 2, 3 when rotated in the other direction An indicator 34 is provided to show when a vacuum is drawn.
Patent GB-521918-A (GB)
Title: Improvements in and relating to methods of sealing vitreous receptacles
IPC: H01J5/24
Filed: 1938-11-28
Abstract: 521,918. Welding glass. BRITISH THOMSON-HOUSTON CO., Ltd. Nov. 28, 1938, No. 34597. Convention date, Nov. 27, 1937. Drawings to 'Specification. [Class 56] [Also in Group XL] Adjacent ends of the stem tube and envelope of an electric lamp are placed against a disc of material, such as carbon, heated by electric induction but not adherent to the glass. This disc is supported upon a rod or block of refractory insulating material, such as sillimanite. Specification 521,917, [Group XXXVI], is referred to.
Patent GB-1191833-A (GB)
Title: Improvements to the Construction of Open-Ended Moulds for the Continuous Casting of Metals
Inventor: PRITCHARD WILLIAM HENRY
IPC: B22D11/041
Filed: 1966-08-02
Abstract: 1,191,833. Continuous casting moulds. CONSOLIDUS Ltd. 31 July, 1967 [2 Aug., 1966], No. 34689/66. Heading B3F. A continuous casting mould is made by butt welding together the longitudinal seams 13 between margins of one or more members that forms or form a polygonal cross-section tube 11, the seams being located between and spaced from two adjacent corners to avoid distortion and thermal stress problems at the corners. In examples described, the polygonal tube may be formed from a single formed plate 10 with a single seam weld 13; from a pair of channel members (22) (Fig. 2, not shown) welded together along their edges to produce two seam welds (23); from a pair of channels (32) (Fig. 3, not shown) with intervening plates (33) necessitating four seam welds (34); and from four angle members (46) (Fig. 4, not shown) and four intervening plates (43), (44) necessitating eight seam welds (45). The members are made from a high thermally conductive metal, e.g. copper, and the polygonal tube 11 is supported in a rigid water jacket 16 having cooling passages 17.
Patent GB-1024647-A (GB)
Title: Nitrosourethane blowing agents and process of producing foamed material therewith
Inventor: REISCHI ARTUR
IPC: C08J9/10
Filed: 1962-09-11
Abstract: Foamed materials including sponge rubber, moss rubber cords and other porous packing cords are prepared by blowing natural rubber; synthetic rubbers based on silicones, butadiene, chlorobutadiene or isoprene polymers, diolefin copolymers with styrene and acryloni trile, ethylene/vinylacetate polymers and polyvinyl chloride/nitrilo rubber blends; polyvinyl chloride and polystyrene with nitrosourethanes of the formula <FORM:1024647/C3/1> wherein R, R1, R2, R3, R5 and R6 represent alkyl or cycloalkyl radicals having up to 6 carbon atoms, R, R1, R5 and R6 may also represent hydrogen and R and R1 may also represent hydroxyalkyl radicals or radicals of the formula <FORM:1024647/C3/2> (in which R4 represents an alkyl or cycloalkyl radical having up to 6 carbon atoms), a and b are 1,2 or 3, and X represents a direct linkage or a heteroatom (e.g. O, S or N), alone or in conjunction with plasticizers and sulphonic acid esters.ALSO:The invention comprises nitrosourethanes of the formula <FORM:1024647/C2/1> wherein R, R1, R2, R3, R5 and R6 represent alkyl or cycloalkyl radicals having up to 6 carbon atoms, R, R1, R5 and R6 may also represent hydrogen and R and R1 may also represent hydroxyalkyl radicals or radicals of the formula <FORM:1024647/C2/2> (in which R4 represents an alkyl or cycloalkyl radical having up to 6 carbon atoms), a and b are 1, 2 or 3, and X represents a direct linkage or a hetero atom, for instance O, S or N (which may either bear a hydrogen atom or an alkyl substituent). The above nitrosourethanes are prepared by reacting appropriate glycols or polyalcohols with appropriate isocyanates, or by reacting appropriate di- or polychlorocarbonic acid esters with appropriate primary amines to form urethane intermediates, which are then nitrosated with nitrous acid.ALSO:Foamed coated materials are prepared by brushing paper, or fabrics having a base coating, with a polyvinylchloride paste containing a nitrosourethane blowing agent of the formula:- <FORM:1024647/B1-B2/1> together with specified fillers, plasticizers, stabilizers and pigments, and subsequently heating to a temperature of between 125-175  DEG C.
Patent GB-829971-A (GB)
Title: Internal combustion engines and pistons therefor
Inventor: GOLDSMITH WALTER IORWERTH
IPC: F01P3/08
Filed: 1957-11-07
Abstract: 829,971. Pistons. RICARDO & CO. ENGINEERS (1927) Ltd. Oct. 6, 1958 [Nov. 7, 1957], No. 34771/57. Class 122 (1). A piston 6, reciprocable in a cylinder 2 of an internal-combustion engine, comprises a cooling-oil retaining trough 13 having an edge portion or one or more outlet passages to determine the depth of oil therein, and passage 3 formed in a cylinder for delivering oil into the trough. The trough is formed with a rim 14 and and is retained on the underside 10 of the piston head by screws 12. A cup-like portion 16 formed integrally with the trough is arranged with one edge below an oil passage 19 in the piston so that, when the latter is in the bottom dead-centre position, oil may be fed from a gallery 4 into the cup via the passage 3 and a groove 20 in the piston. In operation, the oil retained in the cup is thrown upward and impinges on a curved surface 18 on the underside of the piston head and is thereby deflected into the trough. During continued movement of the piston the oil is shaken between the piston surface 10 and the trough thereby cooling the piston head, a quantity of oil escaping over the rim edge and returning to the crankcase. The trough 13 and cup 16 may be formed partly or wholly as an integral part of the piston 6 or partly or wholly as separate units. Specifications 617,224, 724,354 and 786,985 are referred to.
Patent GB-1506394-A (GB)
Title: Resistors
IPC: H01C10/16
Filed: 1975-05-23
Abstract: 1506394 Variable resistors WELWYN ELECTRIC Ltd 23 May 1975 [7 Aug 1974] 34771/74 Heading H1S A combined variable resistor and switch assembly comprises three arcuate resistive elements 2, 3, 4 on a substrate 1, which are engaged by wipers mounted on respective discs 18, 19, 20, and three rotary switches 43, 44, 45 on a housing wall 21, which are mounted coaxially with but are operable independently of the rotary resistors, so that each switch can be operated without disturbing the setting of its associated resistor. The resistors may be adjusted by means of either milled edges projecting from the housing or screwdriver slots in studs 27, 28, 29 which also constitute the axes for the switches. The assembly may be used in colour television receivers, each resistor/switch combination corresponding to a particular colour. The intensity of each colour can be set separately, the other two colours being switched off during setting.
Patent GB-1474982-A (GB)
Title: Antilock braking devices
IPC: G01P15/16
Filed: 1974-08-07
Abstract: 1474982 Digital frequency measurement TELDIX GmbH 7 Aug 1974 [7 Aug 1973] 34857/74 Heading H3H [Also in Division F2] In an antilock braking system, a pulse frequency proportional to the rotational speed of a vehicle wheel is digitized by decrementing a preloaded counter for the duration of one pulse period, the rate of decrementing being reduced in proportion to the reciprocal of the square of said period. The reduction may be continuous or in steps. In Fig. 1, generators 1, 2, 3 produce frequencies proportional to the rotational speeds of the front wheels and rear axle of a motor vehicle, circuit 7 producing the pulse period signals in turn on line 8. Counter 17 is initially preloaded with a number corresponding to the highest possible speed and is decremented by pulses derived from a generator 11 through a divider 12 and switching circuit 13. For an initial period corresponding to the highest speed, gate 15 is blocked, pulses from 13 being counted down in a counter 9 which when empty enables gates 10 and 15 so that decrementing of counter 17 can begin. At predetermined counts in 17, the dividing ratio selected by 13 is changed. The final count (A) in counter 17 is compared at 26 with a count (B) in a reference counter 21. If B>A, counter 17 is incremented via gate 28 until B=A, the pulses being counted at 32 to give a slip frequency #v which is routed by switch 33 to the respective output to vary the brake pressure. If A>B, the count in 17 is loaded into the reference counter 21, either directly via line 18 or, in the dotted variation, by incrementing counter 21 until B=A. Counter 21 is preloaded on the occurrence of vehicle deceleration, sensed at 24 and brake pressure sensed at 23, and counted down slowly via divider 25. In a modification (Fig. 2, not shown) the frequency of the decrementing pulses is controlled by a stepping counter (56) which changes the dividing ratio of a divider (52) feeding the measuring counter (53) and a second divider (55) whose output feeds the stepping counter.
Patent GB-486610-A (GB)
Title: Improved mixing machine
IPC: B01F31/42
Filed: 1936-12-18
Abstract: 486,610. Mixing-machines. DYCKERHOFF, E. Dec. 18, 1936, No. 34906. Convention date, Nov. 17. [Class 86] A machine for mixing fibrous material with a binder which sets rapidly comprises an inclined trough k, Fig. 3, which is reciprocated longitudinally, and in which the material is worked by forks operated by cranks f and connected to links so that their lower ends trace out irregular closed curves in inclined planes. The fibrous material is fed down an incline as shown, and the binder is supplied from a vessel a, Fig. 1, in controlled quantities, the ingredients being supplied from the vessels a<1>, a<5>.
Patent GB-507587-A (GB)
Title: Improvements in or relating to direction finding radio receivers
IPC: G01S1/02
Filed: 1937-12-16
Abstract: 507,587. Directive wireleas systems; photo-electric apparatus. MARCONI'S WIRELESS TELEGRAPH CO., Ltd., SMITH, S. B., and KEMP, R. J. Dec. 16, 1937, No. 34923. [Classes 40 (iii) and 40 (v)] In a direction-finding receiver in which two mutually perpendicular components of the incoming signal are applied to an oscillograph indicator through separate amplifying channels, an omnidirectional . monitoring indication is obtained from energies derived from the two channels. Four modifications are described. (1) In Fig. 1 the two signal components from the crossed frames A1, A2 are applied through separate radio and intermediate frequency amplifiers to the deflection plates P1, P2 of the cathode-ray tube CR in a known manner. The output from the I.F. amplifier IF2 is fed through network PC introducing a phase shift of 90‹ and the output from IF1 is fed direct to the common detector D and monitoring loudspeaker LS which accordingly has an effective circular polar characteristic (2) In Fig. 2 (not shown), a separate monitoring loudspeaker is provided for each channel. (3) A single detector and monitoring loudspeaker may be fed alternately from the two paths by means of a diode network operated by a local A.C. current. (4) When the directional indicator is a luminous oscillograph, e.g. a cathode-ray tube, the light from the oscillograph may operate a photoelectric cell feeding a detector and monitoring loud-speaker. The photo-electric cell may receive general illumination from the cathoderay tube screen but it preferably comprises a strip-like cell PE, Fig. 4, attached to a rotatable pointer CW which is swung into line with the oscillograph luminous trace.
Patent GB-626349-A (GB)
Title: Improvements in circuits for amplifying ultra-high-frequency electrical oscillations
IPC: H03F1/10
Filed: 1946-11-25
Abstract: 626,349. Valve amplifying circuits. PHILIPS LAMPS, Ltd. Nov. 25, 1946, No. 34924. Convention date, April 21, 1943. [Class 40 (v)] In a V.H.F. amplifier comprising a valve having a cathode with two separate connecting leads associated respectively with the input and output circuits, a control grid and 2 auxiliary electrodes, each byepassed to the cathode input lead, the input damping due to reaction between output and input circuits is reduced or made negative by increasing one or more of the inter-electrode capacitances or the inductance of one or more of the auxiliary grid or input cathode leads. As shown, a double bridge is formed by the self-inductances L3, L5 of the screen and suppressor grid leads and the self-capacitances C3, C5 between these grids and the control grid, together with the grid-cathode capacitance C1 and the cathode input lead inductance L1. When the bridges are balanced, reaction between the output-circuit Z2 and the input circuit Z1 through the anode-auxiliary grid capacitances C2, C4 is minimised while if the bridges are unbalanced in opposite directions a negative input impedance may be obtained. If the auxiliary grids are connected by short leads L4, L6 to the cathode output lead the input diagonals of the bridges are effectively short-circuited and reaction at other than the balance frequency is minimised. Specification. 544,641. is referred to.