baber/WOPTO huggingface dataset:
Patent GB-755618-A (GB)
Title: Improvements in or relating to automatic control apparatus
Inventor: GIBBS ALBERT
IPC: G05B11/01
Filed: 1953-10-15
Abstract: 755,618. Automatic control systems. KELVIN & HUGHES, Ltd. Nov. 1, 1954 [Oct. 15, 1953], No. 28474/53. Class 38 (4). A system for controlling a variable, such as the temperature of a furnace, comprises means for producing pulses varying in duration with the deviation of the variable from a desired value, a bridge network comprising a tapped potentiometer and two temperature-sensitive resistors, the latter being heated during the on " and " off periods of the pulses respectively, and a reversible motor actuated by the out-of-b,alance condition of the bridge for restoring the variable to the desired value. In an application to furnace temperature control, heaters 43, 44 are energized over contacts 46, 47, during " pulse-on " and " pulseoff " times respectively, according to the movement of a pulse-actuated arm 49, the pulses being derived from a generator (not shown) such that the difference between " on " and " off " times is proportional to the deviation of the variable from the desired value. The unequal heating of temperature-sensitive resistors 36, 37 causes unequal currents to flow in relay windings 31, 32, thereby actuating a contact 28 to complete a holding circuit through one or other of windings 26, 27, and thus energizes the reversible motor 13 to move the slider 40 of the potentiometer 33 and control the furnace fuel valve 10.
Patent GB-1095934-A (GB)
Title: Improvements in or relating to weighing instruments
IPC: G01G21/24
Filed: 1963-07-19
Abstract: 1,095,934. Weighing apparatus. D. A. BUSSEY. July 20, 1964 [July 19, 1963], No.28562/63. Heading G1W. A weighing device comprising a weigh beam supported upon a fixed fulcrum and a weigh pan mounting member suspended from the weigh beam for supporting a weigh pan above the weigh beam is provided with a parallelogram linkage which maintains the weigh pan substantially horizontal when in use and which consists of a link arm pivotally connected below the weigh beam to a downward extension of the weigh pan mounting member, the link arm being disposed parallel to the weigh beam and pivotally mounted for movement about a fixed horizontal axis parallel with the axis of and vertically below the weigh beam fulcrum, the weighing device being characterized in that one of the two relatively movable parts of the pivotal connection between the downward extension and the link arm is rotatable about the axis of the link arm and also about a vertical axis. As shown, the downward extension 28 of a weigh pan mounting member 20 which is pivotally connected to a U-shaped frame 42 of an adjustable link arm 48 by arranging that conical ended screws 43 attached to the frame engage mating recesses in collars 34, 35 projecting from the extension 28. The frame 42 is permitted rotation about a vertical axis and an axis parallel to the link arm by providing a first bearing between the frame 42 and the link arm 48 and also a second bearing between the link arm 48 and a central support 11 on which the weigh beam is mounted. The first bearing comprises vertically aligned screws 46 on the frame 42 which engage mating recesses in the ends of a block 45 joined to one end 47 of the link arm. The second bearing comprises a cylindrical member 54 which is pivotally mounted at its ends on a framework 55 pivotally attached to the central support 11 and which is provided either with a diametrical hole 53 through which the link arm extends and against which the enlarged spherical other end 56 of the link arm is held by means of a spring 57 or alternatively Fig. 5 (not shown) with a hole (65) in which a ball race (66) is provided and in which the enlarged other end (56) of the link arm is maintained by a plug (67). These bearings ensure correct alignment of the components of the weighing device and in order to suitably adjust the distance between each weigh pan supporting knife edge 18 and the pivot connections between the link arms and extensions 28, there is provided adjusting screws (41) Fig. 4 (not shown). In a further embodiment in which a single weigh pan is provided on a weigh beam, ball race bearings are provided Fig. 6 (not shown).
Patent GB-1273530-A (GB)
Title: Air conditioning apparatus
Inventor: PARTINGTON RICHARD BATT
IPC: F24F1/00
Filed: 1968-06-15
Abstract: 1,273,530. Unit heating or cooling devices; thermal storage heaters. NORTH WESTERN ELECTRICITY BOARD. 13 June, 1969 [15 June, 1968], No. 28615/68. Headings F4U and F4V. An air heating or cooling unit comprises a thermal storage heater 1, a fan 2, an air mixing chamber 9 and a casing 10 in which may be mounted an evaporator 14 and which includes an inlet 11 provided with air deflector vanes 13. Air is blown or drawn through the heater 1 by the fan 2. The heater is controlled by a charge control thermostat 5 and thermal cut out. A damper 19 closes an air outlet 8 of the heater when the evaporator 14 is operative. The evaporator includes a condensate drain. A temperature sensor 16 in an air distribution duct 15 controls the heater 1 to maintain a predetermined air outlet temperature.
Patent GB-519805-A (GB)
Title: Improvements in or relating to installations for generating combustion products under pressure
IPC: F02C5/06
Filed: 1938-10-04
Abstract: 519,805. Combustion-product power plant. SULZER FRERES SOC. ANON. Oct. 4, 1938, No. 28760. Convention date, Nov. 20, 1937. [Class 7 (i)] In a plant for generating power gas, comprising at least one'internal-combustion engine working with scavenging of the combustion space and at least one compressor driven by the engine, a control device for engine ignition is actuated directly or indirectly in dependence on one or more of the physical characteristics (for example, pressure or temperature) of the scavenging air and renders the ignition means operative when the characteristics of the scavenging air are such that ignition will not automatically occur, and vice versa. In the plant shown, a manifold 5 is supplied with power gas from internal-combustion engines 1, 2 and the power gas drives one or more turbines 6. The engines 1, 2 each comprise opposed pistons 10, 11 connected to crankshafts 7, 8 geared together and to a blower 14 supplying scavenging air through a receiver 16 to cylinder ports 17. Exhaust ports 18 deliver to the manifold 5 through a pipe 3 fitted with a relief valve 27, Fig., 3, for discharge of the gases to the atmosphere or a receiver at a lower pressure than that in the manifold 5, and with a check valve 28. The circuit of a sparking plug 13 includes a switch 23, Fig. 2, under the control of a diaphragm 26 responsive to the pressure of scavenging air in the receiver 16, so that the ignition circuit is closed when the pressure of the scavenging air is insufficient to ensure ignition of fuel injected at 12. The relief valve 27 and check valve 28, Fig. 3, can be opened manually by cams 29, 30 on a shaft 31, to facilitate starting. In modifications, the switch 23 may be operated by a member responsive to the temperature or the specific gravity of the scavenging air or to a combination of these values, or to the characteristics of the air in the engine cylinder. Two or more ignition devices in each cylinder may be brought into and out of operation together or in succession or in groups. The ignition devices may be heated by a gas flame controlled in accordance with the invention. The relief and check valves 27, 28 may be controlled automatically in dependence on the pressures or temperatures in the pipes 3
Patent GB-657516-A (GB)
Title: Improvements relating to containers with captive lids or closures
IPC: B65D43/16
Filed: 1948-11-05
Abstract: 657,516. Containers with captive lids &c. UNIVERSAL METAL PRODUCTS, Ltd., and BIDDULPH, M. Nov. 5,1948, No. 28787. [Classes 18 and 66] A one-piece container has at least one portion secured to its edge by an integral, flexible strip so that the portion can be turned over into the container, the closure of the container being also secured by an integral flexible strip. As illustrated a box 10, and compartments 11, 12, 13, therein have lids held by flexible strips &c. the main lid 20 being held closed by a catch 23.
Patent GB-498665-A (GB)
Title: Improvements in or relating to optical projection apparatus
IPC: G03B21/134
Filed: 1937-04-05
Abstract: 498,665. Optical-projection appaxatus. STEVENS, A. H. (Trans-Lux Daylight Picture Screen Corporation) April 5, 1937, No. 28792 /38. Divided out of 496,873. [Class 97 (i)] Optical-projection apparatus comprises a printing device having means moving transversely with respect to a web or the like to print in line form thereon, the projection beam passing horizontally, or approximately so, from the web, and the printing device is readily movable to a servicing position. As shown, the printing device P is carried by an inclined surface of a member 34 on a support 1 pivotally mounted on members 48 pivoted to fixed brackets 49. Thumb screws 50, threaded into a member 52 normally hold the support, but, after opening or removing a door 53 of the cabinet, may be removed from the member 52, to permit the support to be swung out, and the printing device to be inspected or repaired. Specification 496,873 is referred to.
Patent GB-1413947-A (GB)
Title: Process for refining nickel matte
IPC: C22B23/02
Filed: 1974-06-28
Abstract: 1413947 Refining nickel matte INTERNATIONAL NICKEL CO OF CANADA Ltd 28 June 1974 [5 July 1973] 28837/74 Heading C1A [Also in Division C7] Molten Ni matte, containing one or more of As, Bl, Sb, Se and Te as an impurity and having a sulphur content of 28-35% (preferably 30-32À5%) is blown with chlorine gas to remove the impurities as volatile chlorides. The process is carried out at 750-1000‹ C. under a fused halide salt cover containing at least two different salts, i.e. NaCl, KCl, LiCl and CaCl 2  to minimize losses of volatile nickel chloride which dissolves in the salt cover, and uses a salt ; matte ratio of from 1 : 20 to 2 : 1, optimally 1 : 1. Agitation of the melt may be increased by mechanical stirring or by blowing with an inert gas, i.e. N, CO, Ar, CO 2 . The sulphur content of the matte may be increased to the required range (28-35%) by prior treatment with elemental S or by H 2 S. After impurity removal, the S content may be lowered below 20% by surface blowing with oxygen, and other impurities present, i.e. Cu, Co, Fe, Pb, Zn, removed into the salt cover by further chlorination before reducing the matte to Ni metal. The salt may be treated to recover the Ni and other metal values and re-used on high-S mattes.
Patent GB-248446-A (GB)
Title: Improvements in or relating to time recording devices, particularly for use in pigeon flying
IPC: G07C1/26
Filed: 1924-12-02
Abstract: 248,446. Macintosh, C. A. G. Dec. 2, 1924. Ink-ribbon mechanism.-In a device for timing the arrival of pigeons, the carbon strip passing between two paper sheets starts from a roller b<7> and passes round pins b<5> to a second roller b<7>. The ribbon is fastened at each end to an upright pin b<6> which is split at the top to form a V- shaped spring fitting tightly into the spools b<7>. The carbon is fed by raiding the cabinet lid and rotating one spool b<7> by hand.
Patent GB-414925-A (GB)
Title: Method and device for producing pin hinges
IPC: B21K13/02
Filed: 1933-10-18
Abstract: 414,925. Making hinges. AHLHAUS, H., and FISCHER, W., (trading as AHLHAUS & CO., H.), 57, Berlinerstrasse, Halver, Germany. Oct. 18, 1933, No. 28867. [Classes 83 (ii) and 83 (iv).] Forging-dies.-A pin is upset in a hinge sleeve so that a displacement of metal takes place along the entire length of the pin within the sleeve, and it is caused to conform to the shape of the inner surface of the sleeve. A pin a<1> is upset within a sleeve c by dies i, h<1> while the sleeve is clamped between members e, f, Fig. 5, a head being formed at the lower end a<2> and a collar at the upper end. When a pin having a preformed head is used the head may seat in the recess in the die h<1>. The short pin p, Fig. 6, is similarly upset, a long die being inserted in the free end of the sleeve s, and the material flowing into recesses t in the inner surface of the sleeve. Embossing.-The clamping members e, f may be roughened to produce a surface offering better adhesion to paint.
Patent GB-1375898-A (GB)
IPC: H01B13/18
Filed: 1972-06-20
Abstract: 1375898 Indenting conductor sheath NKF KABEL NV 20 June 1972 [21 June 1971] 28885/72 Heading B5A [Also in Division H1] A conductor 52 is provided with balloon insulation by being passed, surrounded by a cylindrical insulating sheath 51 in soft condition, between the blades of two identical wheels whereby regular constrictions 53 are formed in the insulation to engage and locate the conductor. Each wheel has radial blades 56, 57 which are bifurcated at their ends and the tongues thus provided are bent out of the plane of the associated blade in mutually opposite directions. The wheels are rotated in synchronism so that opposed blades form temporary circular apertures about the conductor (see Fig. 2), and thus form the restrictions in the insulating sheath.
Patent GB-148129-A (GB)
Title: Improvements in and relating to means for obtaining unidirectional potential differences or current of constant value
IPC: H02M1/14
Filed: 1920-07-09
Abstract: 148,129. Brttish Thomson - Houston Co., (Assignees of Hull, A. W.). Dec. 22, 1915, [Convention date]. Converting alternating and direct currents. - A constantpotential direct current is obtained by rectifying an alternating current and delivering the rectified current through a series impedance to a load circuit shunted by a second impedance, the series and shunt impedances offering respectively a high and a low impedance to the alternating components of the current. In the arrangement shown in Fig. 2, the current from an alternator 1 is rectified by incandescent cathode tubes 11, 12 and supplied to a condenser 7, a transformer 2 being employed to transform the current to any desired voltage. The load 8 is connected to the terminals of the condenser 7 through an inductance 9 which offers a high impedance to the alternating components and a low impedance to the direct component of the current obtained from the condenser. A second condenser 10, which offers a low impedance to the alternating components, is placed in shunt with the load. Additional shunt circuits tuned to the frequency of the source 1 and to one or more of its harmonics may be employed as shown in Fig. 3.
Patent GB-262752-A (GB)
Title: Improvements in air-cooled internal combustion engines
IPC: F02F1/08
Filed: 1926-11-17
Abstract: 262,752. Barbarou, M. J. B. Dec. 14, 1925, [Convention date]. Void [Published under Sect. 91 of the Acts]. Cylinders, cooling.-Air-cooling ribs 4 are of a sheet metal which is a good-conductor of heat and are imbedded in bosses 5 during the casting of the cylinder. The inner ends of the ribs may be previously tinned and holes may be provided so that the molten metal may flow through. The cylinder may be of a metal which is a good conductor of heat and provided with a strong liner.
Patent GB-1139006-A (GB)
Title: Improvements in or relating to indirectly-heated thermionic cathodes for electric discharge tubes
IPC: C07D307/82
Filed: 1966-06-29
Abstract: 1,139,006. Automatic temperature control. SIEMENS A.G. June 29, 1966 [June 30, 1965], No.29163/66. Heading G3R. [Also in Division HI] An indirectly heated cathode comprises a cathode body 1 and a non-emissive cathode support 4 made of dissimilar metals so that their junction 5 forms a thermo-electric junction which,when the cathode is heated produces a thermo e.m.f. directly related to the cathode temperature; this thermo e.m.f. may be used either to control or maintain the cathode temperature or to display its value. Leads 6, 7 extending from the cathode body and support to a cold junction outside the discharge tube housing the cathode are made of the same metal as that part of the cathode to which they are attached. The thermo-electric junctions formed may be between Mo or Ni and Pt or Ta. As shown, the cathode may comprise a moly-bdenum dispenser vessel 3 covered by porous emitter carrier 2 fastened to the molybdenum cathode body 1 and a tantalum foil cylinder cathode support 4 may be sintered to vessel 3 to form the thermoelectric junction 5. Tantalum lead 6 and molybdenum lead 7 extend out to the cold junction and are connected either to a temperature regulator which controls the cathode temperature as to a temperature display or indicating device.
Patent GB-1318354-A (GB)
Title: Water-insoluble monoazo dyestuffs and materials dyed therewith
IPC: C09B29/033
Filed: 1970-06-16
Abstract: 1318354 Monoazo dyestuffs EASTMAN KODAK CO 16 June 1970 [16 June 1969] 29166/70 Heading C4P The invention comprises water-insoluble monoazo dyes of formula where R is lower alkyl; lower alkyl substituted with cyclohexyl or lower alkylcyclohexyl; allyl; cyclohexyl or cyclohexyl substituted with lower alkyl; Y is -S- or -O-; R<SP>1</SP> and R<SP>2</SP> are H or lower alkyl, one of R<SP>1</SP> and R<SP>2</SP> being H; and X is pyrrolidinonyl, lower alkanoylamido, lower alkoxycarbonylamino, benzamido, lower alkylbenzamido, lower alkoxybenzamido, chlorobenzamido, bromobenzamido, carbamoyl, lower alkanoyloxy, 2,2,4-tri-lower alkyl-3-oxovaleryloxy, benzoyloxy, lower alkyl-, alkoxy-, chloro-, or bromobenzoyloxy. The dyes may be obtained by diazotization and coupling and give red and pink shades on synthetic polyamide fibre materials.
Patent GB-877588-A (GB)
Title: Production of chlorocyanuric acids
Inventor: ROBINSON WILLIAM LEWIS
IPC: F16K1/42
Filed: 1958-09-12
Abstract: Di- and/or tri-chloro cyanuric acid is produced by passing gaseous or liquid chlorine and an aqueous solution or dispersion of disodium or potassium cyanurate or tri-sodium cyanurate with vigorous agitation into a reaction medium maintained at a pH of below 4.5 and a temperature of up to 50 DEG C. for liquid chlorine and 25-50 DEG C. for gaseous chlorine.  The reaction medium may initially be water, a solution of di- and/or tri-alkali metal cyanurate to which chlorine has been added until a pH 4.5. has been attained, or product from a previous run.  The pH is preferably maintained my continuous mechanical high shear agitation.  The temperature is preferably maintained at 10-35 DEG C.  A 5-100% excess, preferably a 10-15% excess of chlorine may be employed.  The cyanurate may be employed at a concentration of 6-10%.  When using di-alkali metal cyanurate, the pH is preferably 2.0-4.3, more preferably 2.0-2.5, and when also using a reaction temperature of 45-50 DEG C., the solution remaining after separation of solid may be cooled to below 30 DEG C., preferably 10-30 DEG C., and chlorine passed therethrough to produce a pH of below 3.0, in order to produce further solid. When using tri-alkali metal cyanurate, the pH is preferably 2.5-4.3, more preferably 3.0-3.8, and when also using a reaction temperature of 40-45 DEG C., the solution remaining after separation of solid may be cooled to below 30 DEG C. and chlorine passed therethrough to produce a pH of below 4.3, in order to produce further solid.  The chlorine and cyanurate solution may be passed p  continuously into the reaction medium, and the reaction product periodically or continuously removed therefrom.  The sojourn time in the reaction zone may be less than 10 min., preferably less than 6 min.  The conditions of reaction are preferably such that the yield is at least 75%, more preferably at least 85%, of theory.  The product may be separated by filtration, decantation, or centrifugation to produce a product containing less than 40%, preferably less than 15% of water. The wet product may be washed with water and dried to a moisture content of 0-4%, preferably 0-1.5%.  Examples are given.
Patent GB-1191460-A (GB)
Title: Thermographic Copying Process
IPC: B41M5/382
Filed: 1967-06-26
Abstract: 1,191,460. Printing processes. INTERNATIONAL BUSINESS MACHINES CORP. 26 June, 1967 [29 June, 1966], No. 29308/67. Heading B6C. [Also in Division G2] A thermographic method of producing a visible image comprises heating an original containing a volatile material to transfer it imagewise to a receptor sheet and immediately or subsequently converting the transferred material into a visible copy by a process involving a colour change in a suitable polyhydroxyanthraquinone (PHAQ) compound. The volatile material is generally coated uniformly on the original. The volatile material may be a PHAQ compound which is evaporated on to a receptor sheet containing either an alkanolamine to effect a colour change due to pH or reaction with the alkanolamine or a metal salt to form a coloured chelate. Alternatively, the receptor sheet with the PHAQ image may subsequently be treated with above reactants to produce the colour change or the volatile material may be an alkali which is transferred to a receptor sheet containing a PHAQ compound to produce a differently coloured image as above. Specified PHAQ compounds are alizarin and alizarin Red S which change from red to violet with alkali, quinizarin and 1,4,5,8 tetrahydroxyanthraquinone which react with alkanolamines to give blue dyes, flavopurpurin and anthrapurpurin. Aluminium, tin, chromium, iron and calcium salts may be used to form metal chelates with alizarin.
Patent GB-318770-A (GB)
Title: Improvements in pneumatic percussive tools
IPC: B25D9/14
Filed: 1928-10-11
Abstract: 318,770. Marks, Sir G. C., (Ingersoll- Rand Co.). Oct. 11, 1928. Percussive tools.-The hammer piston is provided with a groove b which, when the piston overruns the inlet port X and stops, is adapted to catch pressure air leaking forwardly past the piston and return it to the cylinder by way of a longitudinal groove e, so that it may escape through the exhaust ports B This action takes place when the tool is not held up to its work. Compression in front of the piston is relieved by leakage between the nose d and the guide bush e to escape ports f.
Patent GB-1352483-A (GB)
Title: Separable surgical needle
IPC: A61M25/06
Filed: 1972-06-22
Abstract: 1352483 Catheter inserter EXTRACORPOREAL MEDICAL SPECIALTIES Inc 22 June 1972 [24 Sept 1971] 29353/72 Heading A5R A separable surgical needle comprises an elongated hollow shaft 12 formed by longitudinal laterally separable shaft portions, and an enlarged laterally protruding portion 16, the portions being held in tight engagement by a band 28 of a plastics material, preferably heat shrinkable, and having at least one weakened score time (32), Fig. 6, not shown, running longitudinally of the shaft along the band. The band may have two score lines (32) along which it is pre-separated for part of its length at the end nearest the protruding portion 16 to provide two handle portions 34. Used in conjunction with the needle is a catheter (38), Fig. 2 not shown, comprising an elongated flexible tube (40) one end 42 of which is is threaded through the needle for insertion into a vein and a mechanical fitting (44) at the other end of the tube for attachment to a container For removal of the needle from the catheter the needle is slid axially along the catheter and then separated by tearing apart the band along the score lines.
Patent GB-744958-A (GB)
Title: Improvements in or relating to the bindings of loose papers, catalogues and the like
IPC: B42F9/00
Filed: 1952-11-20
Abstract: 744,958. Spring-clip fasteners. HEYWOOD, H. F. Feb. 22, 1954 [Nov. 20, 1952], No. 29405/52. Class 44. [Also in Group XV] Spring clips 5 for securing loose leaves 6 to a securing strip 3 in a cover 1, 2 have opposed jaws having bent back portions 5 into which coins may be inserted to act as levers for manipulation.