baber/WOPTO huggingface dataset:
Patent GB-1047529-A (GB)
Title: Improvements in or relating to saw-tooth wave generators
Inventor: KITCHIN HARRY DONALD
IPC: H03K4/50
Filed: 1962-10-01
Abstract: 1,047,529. Transistor sawtooth generating circuits. MARCONI CO. Ltd. Aug. 12, 1963 [Oct. 1, 1962], No. 37027/62. Addition to 1,033,704. Heading H3T. In a free-running or triggered transistor sawtooth generator in which a capacitor C1 is charged at a uniform rate through a transistor VT1 serving as a constant current source and discharged at regular intervals by a second transistor VT1B whose collector-emitter path is connected in parallel with the capacitor and the sawtooth waveform developed across the capacitor is applied to the base electrode of an output transistor VT2, the mean voltage level at the base electrode of the output transistor and hence the peak-to-peak value of the sawtooth wave is stabilized against changes in leakage current in the output transistor and against changes in the repetition rate of the sawtooth wave by means of D.C. negative feedback, decoupled for alternating-current components, to the constant-current transistor VT1 so that the constant current supplied to the capacitor is adjusted automatically to maintain the mean voltage level at the base of the output transistor constant. In Fig. 1 triggering pulses are applied to the base of transistor VT1B. Owing to the negative feedback, which is decoupled for A.C. by means of capacitor C2, from the collector of output transistor VT2 to the emitter of transistor VT1, the mean voltage at the collector of VT2 will be approximately equal to that established at the base of transistor VT1 by the potential divider R1, R2. Hence the mean voltage at the emitter of transistor VT2 and also that at its base electrode will vary with the magnitude of the variable resistor R4; adjustment of R4 thus adjusts the magnitude of the sawtooth wave. Adjustment of the waveform amplitude may also be effected by returning resistor R4 to a terminal of adjustable potential V<SP>1</SP>. A resistor R5 may be inserted in the emitter circuit of transistor VT1 to improve the constancy of the current supplied thereby. In the circuit of Fig. 3 the output transistor VT2 is replaced by a two-stage amplifier VT2, VT3 having transformer-coupled negative feedback from the output of VT3 to the emitter of VT2, the mean D.C. level of which is established by Zener diode Z1 and resistor R7. The time-constant of resistor R4<SP>1</SP> and inductor L in the feedback circuit is made the same as that of the load R, Ld (e.g. television deflection coils) in the output circuit. A variable resistor R6 in series with the capacitor Cl is provided for linearizing. Free-running circuits.-The circuits of Figs. 1 and 3 can be converted to free-running circuits by the provision of suitable positive feedback and timing means. For example, transistors VT1B may be connected in suitable known blocking oscillator circuits. In Fig. 4 (not shown), which is substantially the same circuit as that of Fig. 3 but with transistor VT1B replaced by a transistor of PNP type, feedback to the base of this transistor is taken from the collector of VT3.
Patent GB-1466455-A (GB)
Title: Electroconductive corrosion-resistant silicon alloys
IPC: H01B1/00
Filed: 1974-08-23
Abstract: 1466455 Si based alloy; anodes for chlorine cells PPG INDUSTRIES Inc 23 Aug 1974 [27 Aug 1973] 37047/74 Headings C7A and C7B A silicon based alloy comprising:- 0À2-2 wt. per cent either N, P, B or Al 1 to less than 50% of a transition element Balance Silicon. with a predominant Si-rich discontinuous phase surrounded by a transition-metal-silicide-rich phase with discrete nodules of a dopant-rich phase, has an electro-conductivity of more than 100 ohmcentimeters<SP>-</SP><SP>1</SP> and is suitable for corrosion resistant electro-conductive elements i.e. anodes in electrolytic chlorine cells.  The transition element may be any metal which is soluble in Si, or in which Si is soluble or which forms a silicide in which Si is soluble. Preferred transition metals are Fe, Co, Ni, Cr, Mn or Mo, although other metals are interchangeable. The preferred compositions are Fe 4-14% Co 9-12%, Ni 1-7%, Cr 1-6%, Mn 1-6%, and Mo 5% minimum and the preferred dopant is either Boron or phosphorus.
Patent GB-522917-A (GB)
Title: Improvements relating to metal vapour electric discharge lamps
IPC: H01J61/96
Filed: 1938-12-21
Abstract: 522,917. Electricity supply to discharge lamps. SIEMENS ELECTRIC LAMPS & SUPPLIES, Ltd., LE MARECHAL. W. H., and ALDINGTON, J. N. Dec. 21, 1938, No. 37129. [Class 38 (iv)] A metal vapour discharge lamp has connected in shunt with it a metal filament lamp having a rated voltage above the running voltage of the discharge lamp and below the mains voltage so that, during the operation of the discharge lamp, the current in the filament is below its rated value and whereby, if the discharge is accidentally extinguished while the mains voltage is still applied, the filament is overrun and gives an adequate illumination during the time taken for the discharge lamp to recommence its discharge.
Patent GB-1446018-A (GB)
Title: Heat recovery and recycle process and plant
IPC: F01K5/02
Filed: 1973-08-06
Abstract: 1446018 Boiler systems R G J PEAVER 18 Oct 1974 [6 Aug 1973] 37180/73 Heading F4A In an apparatus for recovering and increasing the temperature of some of the heat rejected as steam from a machine or process so that the heat may be re-used in the machine or process or used for any other suitable purpose, a contact condenser is connected to a system such that the reject steam 1 passes via a demister 2 to the condenser side of a contact condenser 3 and a separate boiling vessel or concentrator 12 fitted with an internal surface heat exchanger reconcentrating the solution by the application of external heat through a pumped system to collect the reject heat and convey the recovered heat at elevated temperature to the machine or process or other suitable use. In the contact condenser 3 the steam is mixed with and condensed in a spray of non-boiling concentrated solution 5, such as caustic soda, which is at a temperature higher than the highest temperature required by the machine or process. The heated solution flows over the outside of heater tubes 6 through which the medium to be heated 7 (e.g. circulating brine in a seawater evaporator) is pumped. The cooled diluted solution 9 falls to the bottom of the condenser 3 from where it is extracted by a pump 10 and fed to a pre-heater 11 and to the concentrator 12 when the condensed reject steam is boiled off at a pressure and temperature suitable for use in the process heater 13. For short periods out of service, the system will permit the solution to be kept hot above saturation point in the concentrator 12 without boiling and to be continuously circulated round the system by pumps 17 and 10. The surplus diluted solution is pumped into a dilution tank 42 leaving the system filled to working level with diluted solution. Alternative embodiments are disclosed in the Specification (Figs. 7 and 8, not shown) wherein a multi-stage regenerative cycle is provided with two separate single stage condensers 3 in series.
Patent GB-1517782-A (GB)
Title: Rigid isocyanurate polymer foams and manufacture thereof
IPC: C08G18/67
Filed: 1975-09-10
Abstract: 1517782 Foamed furfuryl alcohol or furfural modified isocyanurate polymers BASF WYANDOTTE CORP 10 Sept 1975 [19 Dec 1974] 37267/75 Headings C3C and C3R [Also in Division C2] A rigid foamed furfural alcohol or furfural modified isocyanurate polymer may be made by condensing an organic polyisocyanate in the presence of a catalytically sufficient amount of an isocyanate trimerization catalyst and furfural or furfuryl alcohol, which alcohol can be present as blocking groups on the polyisocyanate. The furfuryl alcohol or furfural may be' polymerized in situ contemporaneously with the trimerization of the polyisocyanate. In the Examples (I-XXIX) methylene diphenyldiisocyanate, furfuryl alcohol, 1,3,5-tris-(3-dimethylaminopropyl) - s - hexahydrotriazine, a polysiloxane surfactant, stannic chloride, phosphorus pentoxide, fluorotrichloramethane, trifluorotrichloroethane, a polyol made from the Mannich condensation product of phenol, formaldehyde, ethanolamine and propylene oxide, dibutyltin diacetate, methanesulphonic acid, tris-(2-chloromethyl) phosphate, benzoyl chloride, and/or a propylene oxide adduct of propylene glycol were mixed together and allowed to foam and in Examples XXX-XLI furfuryl alcohol blocked polyisocyanates were first made and then mixed with a furan polymerization catalyst, e.g. benzoyl chloride, ferric chloride, phosphorus pentoxide or maleic anhydride or chloride, an isocyanate trimerization catalyst and surfactant and allowed to foam. Reference has been directed by the Comptroller to Specification 1,483,913.
Patent GB-302689-A (GB)
Title: Grinding tool of reinforced single grinding bodies interchangeably mounted on a carrying disc
IPC: B24D7/06
Filed: 1928-12-18
Abstract: 302,689. Krug, C. Dec. 20, 1927, [Convention date]. Wheels.-In a grinding-wheel consisting of a carrier disc s to which are detachably secured a number of grinding-bodies, the bodies each consist of a flanged thin sheet metal mounting @c<1> having tongues f pressed up therefrom, the abrasive body a<3> being moulded, whilst in a soft state, in the mounting so that the tongues are embedded in, or engage the body. The bodies are each secured to the carrier s by a central hollow flanged bolt g' and a nut m, Fig. 4a, by a bolt g<3> located in a neck e<2> engaging a recess in the carrier, Fig. 5a, by threading the neck itself to receive a nut, or by a bolt welded to the mounting. An elastic layer i may be'inserted between the mountings e<1> and the carrier s. The blocks may be of cylindrical form as shown, the sides being flattened at k, Fig. 4, or may be of solid sector shape. The cavity formed by the neck c<2> may be filled with the grinding-material or with cement. The Specification as open to inspection under Sect. 91 (3) (a) comprises also the use of cement for securing the body to the mounting, and also describes grinding-bodies having inclined channels therethrough. This subject-matter does not appear in the Specification as accepted.
Patent GB-824371-A (GB)
Title: Improvements in damper valves
Inventor: TURNER PHILIP WILSON
IPC: F16F9/34
Filed: 1956-12-06
Abstract: 824,371. Hydraulic dampers. MOULTON DEVELOPMENTS Ltd. Dec. 4, 1957 [Dec. 6, 1956], No. 37343/56. Class 108(3) [Also in Group XXIX] A valve for controlling flow of fluid in either direction and suitable for use in a vehicle suspension system as described in Specification 813,259 comprises an apertured disc 18 clamped by a rubber &c. sleeve 5 and hose clips 6, 7 between a pair of housing parts 3, 4 and carrying ported, rubber &c. closure members 20, 21 of which the faces that engage the disc 18 are concave before attachment of the closure members to the disc 18 by a central spindle 17. Flow in either direction takes place through apertures in the disc 18 that register with the apertures in the upstream closure member, the downstream closure member being flexed away from the disc 18. By differently shaping the closure members or by making them of different hardness or resilience the flow characteristics in the two directions can be made to differ. Specification 810,191 [Group XXIX] also is referred to.
Patent GB-811855-A (GB)
Title: Photographic cameras with hingeable and detachable parts
IPC: G03B17/02
Filed: 1955-12-30
Abstract: 811,855. Hinges and pivots; releasable fastenings. HEIDECKE, R., and FRANKE, H., [trading as FRANKE & HEIDECKE FABRIC PHOTOGR. PRAZISIONSAPPARATE]. Dec. 30, 1955 [March 2, 1955], No. 37431/55. Classes 44 and 65(2) A part of a camera (e.g. the back), is detachably connected to the camera body by a pair of hinges each comprising a bar member 10 secured to the camera body, having a slot 1 which is engaged by a pivot pin, carried by the camera part, the open end of the slot being closed by a part 7 of a latch 6 pivoted to the bar 10. The outer surface of the part 7 is shaped so that when the pin is pushed against it the part 7 first rises against the action of a spring 11 allowing the pin to enter the slot 1 and then closes behind the pin. The latch 6 has a projection 9 for finger release and for limiting the release movement.
Patent GB-829773-A (GB)
Title: New or improved relief mechanism for tool heads or the like
Inventor: SYKES ARTHUR
IPC: B23F13/04
Filed: 1955-12-31
Abstract: 829,773. Gear - cutting; gear grinding. BROWN INDUSTRIES Ltd., D. Dec. 31, 1956 [Dec. 31, 1955], No. 37545/55. Class 83 (3). [Also in Group XXIII] A machine tool comprises a clapper box f, a bar j mounted on a reciprocable tool-head a, stops ul, u<SP>2</SP>, for displacing the bar axially at the end of each reciprocation, and a spring h for holding a follower r on the clapper box in contact with a cam q on the bar. The clapper box carries a grinding wheel d which generates the teeth on a continuously rotating gear. Dimples o, p on the bar are engaged by spring- pressed balls n to retain the bar in each of its positions. In a modification, the cam-surface is mounted on the clapper box and the roller on the bar. The Provisional Specification refers also to planing and shaping machines.
Patent GB-324772-A (GB)
Title: Improvements in and relating to means for housing and exhibiting animals, birds, fish and reptiles
IPC: A01K1/00
Filed: 1928-12-20
Abstract: 324,772. Wilson, A. Dec. 20, 1928. Exhibition buildings.-A building for housing and exhibiting animals, birds, fish, and the like, has the lower and outer portion a in the form of a boat, while the upper and inner portion b is in the form of a house which is provided with a series of cases or compartments e for the reception of the exhibits. The cases are provided with glass fronts f and glass partitions and some of the compartments may be provided with glass backs in alignment with windows in the sides of the structure, so that the exhibits may be viewed from the exterior.
Patent GB-305200-A (GB)
Title: Improved means for transforming a successive reciprocating movement into a periodic reversing movement
IPC: G01F3/22
Filed: 1928-12-20
Abstract: 305,200. Aktiebolaget Igamy. Feb. 2, 1928, [Convention date]. Gas meters.-To obtain a snap-over reversing movement in operating a slide valve 2 from a diaphragm 1 in a dry gas meter, a pair of intermediate levers 4, 10 are connected by a spring 11, lugs 12 on the end of the lever 10 riding on lateral flanges 7, 8 on the boss of the lever 4, to restrain the transmission of the movement until the lever 4 reaches the end of its stroke in either direction.
Patent GB-1272397-A (GB)
Title: Improvements in and relating to ball joints
Inventor: JANES GEOFFREY GILBERT
IPC: F16C11/06
Filed: 1968-08-07
Abstract: 1,272,397. Ball joint housing. ARMSTRONG PATENTS CO. Ltd. 31 July, 1969 [7 Aug., 1968], No. 37683/68. Heading E2F. A ball joint housing assembly comprises a connecting stem welded to the circumference of a hollow cylindrical housing member, dimensioned to contain a ball and socket, by a weld having a cross-sectional area at least equal to that of the stem. The assembly may comprise a stem 12, threaded for connection with a mechanical linkage and welded to a housing member 10 by a projection weld 24 in combination with a weld 26 formed by brazing or by CO 2 , arc- or oxy-acetylene welding. Alternatively the stem may be welded to the housing member solely by a CO 2 , arc- or oxy-acetylene weld.
Patent GB-318452-A (GB)
Title: Improvements in or relating to collapsible tubes or containers
IPC: B65D35/14
Filed: 1928-12-21
Abstract: 318,452. Bruun, O. J. Dec. 21, 1928. No Patent granted (Sealing fee not paid). Tubes or containers, collapsable.-Callapsable tubes or containers are prevented from being crumpled or rolled up in use, so as to become unsightly, by means of a stiff plate 9 of metal or other material arranged inside the tube. The plate has rounded corners and may extend into the, folded closure 11 of the lower end of the tube.
Patent GB-988998-A (GB)
Title: Improvements relating to calender rollers for textile carding machines
Inventor: CLAYTON HAROLD
IPC: D01G15/46
Filed: 1963-09-25
Abstract: 988,998. Weighting carding-engine calender rollers. T.M.M. (RESEARCH) Ltd. Sept. 25, 1963, No. 37807/63. Heading D1D. One of a pair of carding machine calender rollers is mounted on a support that can be pivoted to swing the roller between operative and inoperative positions and has roller loading means applying a force to bias the movable roller toward the co-operating roller, the pivoting point being located between the roller and the point at which the biasing force is applied. The top roller 18 is carried in bearings 19, 20 on a shaft 21 that extends from a support 22 rotatably mounted on a cylindrical eccentric member 23 which is eccentrically mounted on a rotatable shaft 24. The support 22 carries an extension 26 for engagement by a spring-loaded plunger 27. A handle 25 is attached to the shaft 24 by means of which the top roller 18 may be released from the loading imposed by the plunger 27. Initial movement of the handle 25 carries the extension 26 clear of the plunger 27 in partial lateral movement arising from the eccentric mounting of member 23 and continued movement of the handle causes the roller 18 to pivot about the shaft 24.
Patent GB-937510-A (GB)
Title: Two-component diazotype material
IPC: C07D207/38
Filed: 1961-10-23
Abstract: 937,510. Diazotype materials. CHEMISCHE FABRIEK L. VAN DER GUNTEN N.V. Oct. 23, 1961 [Nov. 25, 1960], No. 37891/61. Class 98 (2). A two-component diazotype material comprises a support carrying a layer containing a light-sensitive diazonium compound of formula wherein X is an anion, R 1  and R 2  are alkyl groups with 1-3 carbon atoms and R 3  and R 4  are hydrogen or methyl, a blue azo coupler which is 2,7 dihydroxynaphthalene-3,6-disulphonic acid or 2,3 dihydroxynaphthalene or its 6 sulphonic acid and a yellow azo coupler which is an acetoacetamide less volatile than p-chloroacetoacetanilide. Specified acetoacetamides are o-, m- and p-hydroxy-, o-, m- and p-carboxy", p - ethoxy -, p - bromo -, 2,4,6, - tribromo-, m - carboxy - p - hydroxy - and p - diethylamino - m - chloro - acetoacetanilide'; N - hydroxyethyl -, N - carboxymethyl - and N - dnaphthyl - acetoacetamide ; m - and pacetoacetaminobenzene sulphonic acid; N-acetoacet - and N,N<SP>1</SP> - bis - acetoacet - piperazide; N,N<SP>1</SP> - bis - acetoacet - p - phsnylene diamide, 2 - aeetoacetamidonaphthalene - 8- sulphonic acid, N,N<SP>1</SP> bis acetoaoet-ethylene diamide, N - acetoacet - N,N - diethanol amide and 2 - acetoacetamido - 6 - ethoxybenzothiazole. The volatility of the acetoacetamide is determined by putting the compound in a bottle, the cap of which has a strip soaked in a diazonium compound of great coupling activity, and putting the bottle in an oven at 35‹ C. for 36 hours. The strip is then removed, exposed to ammonia and then to light to decompose the diazonium compound. The density of the yellow shade on the strip, due to coupling of the diazonium compound, is determined by colorimetric or spectrographic methods; the deeper the shade, the more volatile the acetoacetamide. Specification 538,869 is referred to.
Patent GB-1432450-A (GB)
Title: Containers comprising paperboard cartons and method of  filling such cartons
IPC: B65D5/60
Filed: 1973-06-26
Abstract: 1432450 Lined cartons J A MALCOLM 26 June 1973 37893/75 Divided out of 1432449 Headings B8P and B8C The container disclosed in this Specification is the same as one embodiment disclosed in Specification 1,432,449 but the claims are directed to the container in which the liner extends beyond the shorter end closing flaps but not beyond the longer end closing flaps.
Patent GB-1477357-A (GB)
Title: Pyrotechnic composition
IPC: C06D5/06
Filed: 1974-08-29
Abstract: 1477357 Gas-generating compositions ALLIED CHEMICAL CORP 29 Aug 1974 [10 Sept 1973] 37900/74 Heading ClD A non-toxic gas-generating composition comprises a fuel, a metal nitrate, chlorate, or perchlorate as an oxidiser, and nickel carbonate or magnesium carbonate as a coolant, The fuel may be carbon black, lamp black, Al, Mg, nickel formate, iron oxalate, magnesium oxalate, or aluminium formate, and the oxidiser potassium or sodium nitrate, chlorate, or perchlorate. In examples, the ingredients used are carbon, nickel formate, nickel or magnesium carbonate, and potassium chlorate. A polycarbonate or an acetal resin may be added as a binder. The composition may be formed into pellets with the addition of stearic acid or polyethylene glycol as a lubricant. On combustion, the composition generates low temperature gas suitable for inflating a vehicle safety bag.
Patent GB-1433317-A (GB)
Title: Arrangement for the control of a burner
IPC: F23N1/00
Filed: 1974-08-30
Abstract: 1433317 Burners JOH VAILLANT KG 30 Aug 1974 [4 Sept 1973] 38033/74 Heading F4T A control arrangement for a gas supply valve 22 of a burner 5 of a water heater 6 has an amplifier 13 controlling the actuating solenoid 20 of the gas valve and fed by two input lines 12, 27 connected respectively to one branch of a bridge and formed by a resistor 14 and a NTC resistor 8 responsive to the temperature in the heat exchanger outlet 4 and to the other branch of the bridge and formed either by a resistor 38, 39 and a capacitor 41 or by a resistor 42, 43, 44 according to the position of contact 30 which is moved by an electromagnet 31 that is controlled through a contact 34 moving with the gas valve. A further bridge branch is formed by the resistors 23, 24 and is switched in and out of connection with amplifier input line 27 by a contact 28 moved according to the temperature at the heat sensor 7. A contact 46 in the circuit supplying a pump 2 is moved together with contact 30. In a modification resistors 8 and 14 are replaced by a fixed resistor (71) and a PTC resistor (70). In a further modification the resistor 8 is in parallel with a resistor (63) which can be switched in to replace the resistor 8.
Patent GB-858133-A (GB)
Title: Manufacture of metal salts of formo-sulphathiazole
IPC: C07D277/52
Filed: 1957-12-06
Abstract: The invention comprises a salt of formosulphathiazole (the reaction product of sulphathiazole with formaldehyde) with a divalent metal, and the preparation thereof by reacting sulphathiazole or a salt thereof in a diluent with formaldehyde and a soluble salt of a divalent metal.ALSO:Pharmaceutical compositions comprise a salt of formo-sulphathiazole (the reaction product of sulphathiazole with formaldehyde) with a divalent metal, in admixture with a pharmaceutical organic or inorganic solid or liquid carrier suitable for oral or parenteral administration.  The preparations may be in the form of tablets, dragees, salves, creams, solutions, suspensions or emulsions, which may be sterilized and may contain preservatives, stabilizing, wetting or emulsifying agents, salts to vary the osmotic pressure, buffers, or additional therapeutically valuable substances.