baber/WOPTO huggingface dataset:
Patent GB-1102688-A (GB)
Title: Improved grit blasting apparatus
Inventor: CARDON MICHEL ALEXANDRE PIERRE
IPC: C08G18/02
Filed: 1965-09-09
Abstract: 1,102,688. Blasting. VACU-BLAST Ltd. 18 Aug., 1966 [9 Sept., 1965], No. 38595/65. Heading B3D. Grit blasting apparatus comprising an enclosure with an open side adapted to contact around it the workpiece to be treated and means within the enclosure for projecting a stream of abrasive through the said open side on to the workpiece is characterized in that there is provided sealing means around the boundary of the open side comprising two or more flexible seals with space between them to which a subatmospheric recovery pressure is applied, at least the outermost seal of which is pervious. Apparatus comprises an enclosure 1, Fig. 2, with one side open, beneath which is fitted a hopper 2 having an outlet 3 connected by a hose 4 to a source of vacuum, normally through an abrasive reclaimer unit. Inside the enclosure is a blast nozzle 5 connected to a source of compressed air and abrasive and directing abrasive through the open side of the enclosure on to the workpiece 8. The nozzle 5 is oscillated about a shaft 6. Around the edge of the open side is fitted a double row seal, e.g. of a flexible air pervious material such as crimped nylon brush, which makes contact with the work surface to prevent the escape of abrasive and debris. The space between the seals is connected by hose or hoses 11 to the vacuum source so as to remove any abrasive and debris which has passed the inner seal. The distribution of air flow from the enclosure and the inter-seal space is controlled by valves or restrictor orifices in the hoses. The enclosure is fitted with wheels 12 to guide it over the work surface. The seal assembly can be spring-mounted to allow for variations in contour of the work surface. A rubber bellows 23, Fig. 5, forms a flexible seal between the enclosure and the seal assembly which is urged against the work surface by three or more spring-loaded cylinders 24. A solid but flexible seal, e.g. rubber, may be used for selected parts of the seal periphery, e.g. the sides and top of the inner seal and the sides of the outer seal. In a modification, Fig. 6, a flexible but solid rubber inner seal 25 is used with an air pervious outer brush seal 26. Two nozzles 5 are mounted on a holder 19 rotated by an air motor or similar means 20. The enclosure is suspended by a cable 14 and moved vertically by a winch 15. To urge the enclosure against the work-surface a weight 16 is attached to a fixed cable 17 passing over a pulley 18 on the rear of the enclosure. The enclosure may be mounted on rails positioned vertically or horizontally and attached at intervals to the workpiece by vacuum pads or permanent or electro-magnets. For cleaning plates from underneath, e.g. on ships in dry dock, the equipment is supported from the clock bottom and held against the work surface by hydraulic or pneumatic cylinders or springs.
Patent GB-1407455-A (GB)
Title: Drift corrector for transducers
IPC: G01B7/16
Filed: 1972-08-18
Abstract: 1407455 Measuring strain electrically USS ENGS & CONSULTANTS Inc 18 Aug 1972 [20 Aug 1971] 38723/72 Heading G1N In apparatus for measuring the roll separation force produced by a workpiece W in a rolling mill the signal from strain gauge bridge 8 installed on the roll housing is compensated for temperature drift by means of an amplifier 18 receiving the signal and supplying it to an integrator 30 through an inverting amplifier 26, a comparator 32 and switches 46, 48 being arranged such that when the signal to amplifier 18 is due to drift alone, that is no workpiece is present, the output signal from the amplifier 18 is inverted at 26 then integrated and fed to an input of amplifier 18 to balance the drift signal, but when a workpiece enters the rolls the integrator is caused to be switched to hold its output constant and equal and opposite to the drift component so that it is substracted at 18, and the meter 22 and recorder 24 indicate the driftfree force value. A variable resistor 28 is said to be arranged to control the speed of drift compensation.
Patent GB-882660-A (GB)
Title: Ac-dc rectifier
IPC: H01L23/467
Filed: 1959-11-16
Abstract: 882,660. Rectifying. SABINS, R. C. Nov. 16, 1959 [Nov. 17, 1958], No. 38726/59. Class 38 (2). [Also in Group XXXVI] A rectifier assembly comprises a number of diodes in heat conducting contact with a block of high thermal conductivity material forming a wall of the assembly and having holes through it to allow circulation of a cooling medium. In the arrangement shown, Fig. 1, a cabinet 22 is provided with panels 46 on two opposite sides on each of which are mounted silicon diode rectifiers 72. The rear of a part of a mounting panel is shown in Fig. 4 and detail of the diode mounting is shown in Fig. 5. Panel 46 is formed of fibre glass and is attached to the frame at holes 48. The diodes are attached to blocks 52 of high thermal aluminium and around each diode are drilled fourteen ventilating holes 70. As shown in Fig. 5, each diode is held in close contact with a heat sink by screws 64 and is surrounded by a concentric aluminium ring 72. The space between ring and diode is filled with epoxy material 74 containing granules or threads of heat conducting material. A blower 40 draws air into the housing and forces it out through holes 70. Each plate 52 carries two rectifiers so that the whole assembly provides a triple full-wave bridge assembly. Each plate may be spaced from its neighbour so that air escapes between them, convection cooling is possible.
Patent GB-1119111-A (GB)
Title: Infra-red heating device
Inventor: BUDDEN ROBERT GEORGE
IPC: F23C99/00
Filed: 1965-09-10
Abstract: 1,119,111. Incandescent gas heaters; gas burners. ROBERTS-GORDON APPLIANCE CORP. 10 Sept., 1965 [22 March, 1965], No. 38731/65. Headings F4T and F4W. An infra red heater comprises an elongated burner 12 heating the inner surfaces of an inverted V-shape radiant 28 and a reflector 40 directing heat from the radiant 28 downwardly. The burner comprises two channel sections joined by flanges 14 and tapering from the gas inlet end. The upper flanges 14 are held apart by a corrugated strip 15, Fig. 2 forming burner apertures with the flanges and packing pieces 15<SP>1</SP> at the non-operative part of the burner tube. The radiant 28 is formed of perforated metal sections and is secured by bottom flanges 30 held between angle strips 32, 33 joined to the end plates of the heater. The reflector 40 has end plates bolted to the heater end plates, and additional holes so that it may be secured in inclined positions.
Patent GB-1396579-A (GB)
Title: Electrical installations
IPC: H02P23/00
Filed: 1972-08-18
Abstract: 1396579 De-excitation of brushless synchronous machines SIEMENS AG 18 Aug 1972 [23 Aug 1971] 38747/72 Heading H2A In an electrical installation comprising a brushless synchronous machine 1 including an exciter winding 3 arranged to be excited, via an uncontrolled rectifier 7 mounted for rotation, by a 3Ph. rotor winding 6 of an exciter machine 4 having an excitable stator winding 5, there is provided a de-exciter machine 8 comprising a polyphase stator winding 10 and at least one rotor winding 9 connected in series with the synchronous machine exciter winding 3 for injecting into the latter de-excitation current in the direction opposite to that in which the rectifier is arranged to feed excitation current thereto from the exciter machine rotor winding, the exciter and de-exciter machines 4, 8 both being either synchronous or asynchronous machines and there being connected across the or each de-exciter machine rotor winding 9 a diode 11 poled to provide a short circuit across such winding(s) during those half cycles of the de-exciter machine rotor current which are of a polarity opposing the de-exciter action of the rotor current half cycles of the opposite polarity. As shown, the two stator windings 5, 10 are supplied in parallel, via respective rectifier bridges 12, 17 and transformers 13, 18, from a choking coil 14 and a current transformer 15 with a current which is load-dependent upon the machine 1. The bridges may be short-circuited
Patent GB-1090325-A (GB)
Title: Improvements relating to watertight doors
IPC: B63B19/00
Filed: 1965-09-11
Abstract: 1,090,325. Bulkhead doors. H. BUCHANAN & CO. Ltd. Sept. 12, 1966 [Sept. 11, 1965], No. 38876/65. Heading B7S. On a watertight door 1 pivotally mounted to a bulkhead 2 by two hinge batts 3, each hinge batt has a non-rotatable screw-threaded portion 8 supported by the bulkhead 2, a rotatable screw-threaded adjustment nut 15 and a locking nut 14 with flange 17 to restrain the adjustment nut 15 from movement along the axis of the screw-threaded portion 8 so that on rotation of the adjustment nut 15 the edge portion of the door moves towards or away from the bulkhead 2. Clamps denoted generally at 28 secure the edge portions of the door to the bulkhead and a continuous strip 23 of resilient material positioned on the face of the door to be in abutment with the edge of upstanding limb 22 of the door frame 20 gives watertight engagement, In another embodiment of the watertight door. Fig. 3 (not shown), the adjustment nut 15 is on that face of the bulkhead 2 adjacent to the door.
Patent GB-1161219-A (GB)
Title: Improvements in or relating to Domestic Washing Machines.
Inventor: BARNISH PHILIP
IPC: D06F37/06
Filed: 1966-08-31
Abstract: 1,161,219. Washing-machines. PHILIPS ELECTRONIC & ASSOCIATED INDUSTRIES Ltd. 31 Aug., 1966, No. 38898/66. Heading D1A. A lifter for a washing drum is formed as a hollow polypropylene moulding of triangular cross section with closed ends 23, 24 which slope towards each other so as to be in the form of a trough, the edges of the trough having extensions 16 to engage keyhole slots in the cylindrical side wall of the washing drum. The trough. is shorter than the axial length of the washing drum. The washing unit of the machine is mounted on springs and dampers and the washing drum is driven by an electric motor by way of a centrifugally operated expanding pulley. A water heater element is provided.
Patent GB-1149688-A (GB)
Title: Improvements in and relating to a photographic camera
IPC: G03B17/02
Filed: 1967-08-24
Abstract: 1,149,688. Cameras. RICOH, K.K. Aug.24, 1967 [Sept. 7, 1965], No.38937/67. Heading G2A. The lens barrel can be detached from a camera, and the film magazine inserted through the opening so formed. As shown, a threaded ring 5 can screw into a threaded portion 3 of the front panel 2 of the camera body. A lens barrel unit 7 is mounted within ring 5 so that it is rotatable but is restrained from axial movement. The barrel carries an objective lens 11, a supplementary lens 10 for an exposure-regulating device 14, and an annular flash discharge lamp 13. The barrel has an integral rearward extension 15 whose edge 15a abuts against the film magazine 16 and urges it against a platen spring 18 on the camera body. The bottom part of extension 15 has a slotted arm 24, the slot of which slides on a pin 25 fixed in the camera body. Thus when ring 5 is completely unscrewed from threaded portion 3, the barrel unit 7 can hinge down into the position shown in broken lines in Fig. 5 without being completely detached from the camera body. In this position, the film magazine 16 can then be loaded into the camera through the opening thus formed. Fig. 7 (not shown) illustrates how the release button (28) is entirely within the camera housing, and is pressed by engagement with a flexible part (29, 29a) of the housing, which is of advantage in making the camera waterproof.
Patent GB-1423378-A (GB)
Title: Process for the continuous production of dihydroperoxides
IPC: C07C407/00
Filed: 1973-08-17
Abstract: 1423378 Production of dihydroperoxides SUMITOMO CHEMICAL CO Ltd 17 Aug 1973 [23 Aug 1972] 39090/73 Heading C2C The invention comprises a process for continuously producing m- and/or p-diisopropyl dihydroperoxide by the oxidation of m- and/or p-diisopiopylbenzene in the liquid phase with oxygen or a gas containing free molecular oxygen, in which the concentration of m- and/or p-diisopropylbenzene monohydroperoxide in the oxidation product solution is 20 to 40% by weight.
Patent GB-1440373-A (GB)
Title: Sulphurized metal phenates
IPC: C10M159/12
Filed: 1973-08-14
Abstract: 1440373 Overbased materials; lubricants CHEVRON RESEARCH COMPANY 14 Aug 1973 [18 Aug 1972] 39526/73 Headings C4X and C5F An overbased sulphurized phenate is made by a two-step process. In the first step, an alkylphenol, having from 8 to 35 carbon atoms in the alkyl group, is reacted with sulphur and a base in the presence of a common solvent to form an intermediate; in the second step, this intermediate is reacted with a further quantity of the base in the presence of the common solvent, so that the product has an atomic ratio of sulphur to metal from 1 to 4. The base is the oxide or hydroxide of Ca, Sr or Ba, a mixture of two or more of these, magnesium methoxide or magnesium methyl carbonate. The common solvent may be ethylene glycol, its monomethyl or monoethyl ether or 1,4-butandiol. An additional diluent, e.g. a mineral lubricating oil, may also be present. A lubricating composition comprises the overbased sulphurized phenate and a base oil, which may be mineral or synthetic (many listed). The composition may also contain other additives of known kinds. In an example, the second additive is a succinimide dispersant.
Patent GB-1095959-A (GB)
Title: Di-(fluoromethyl)-methylene bisphenols
Inventor: STECKER HERBERT CHRISTIAN
IPC: C07C39/367
Filed: 1966-09-05
Abstract: The invention comprises bisphenols of the general formula <FORM:1095959/C2/1> in which X is bromine, chlorine, iodine or fluorine; Y is methyl, bromine, iodine, chlorine or fluorine, and n is 0-3.  They are prepared by reacting the corresponding halogen-substituted acetones with the appropriate phenols. Alternatively, a substituted acetone may be reacted with the phenol and the product halogenated in the benzene nuclei.ALSO:Bis-phenols of the general formula <FORM:1095959/A5-A6/1> in which X is bromine, chlorine, iodine or fluorine; Y is methyl, bromine, iodine, chlorine or fluorine; and n is 0-3, are used as germicides.  They may, for example, be incorporated in cloth, paper, leather, wood or in detergent compositions, e.g. in toilet soaps consisting of the sodium and potassium salts of fatty acids from tallow, olive oil and palm oil.
Patent GB-922166-A (GB)
Title: Apparatus for conveying flexible strip material
Inventor: MADDOCK RALPH B
IPC: B65G39/071
Filed: 1961-11-06
Abstract: 922,166. Feeding-webs. PAKO CORPORATION. Nov. 6, 1961 [Nov. 4, 1960], No. 39728/61. Class 100 (1). [Also in Group XX] Apparatus suitable for use in processing photographic film strips comprises processing tanks and apparatus having means for guiding the film comprising at each of successive guide points along the film path three abreast rollers each having a medial zone of larger diameter than its ends but the central roller having its maximum diameter greater than the maximum diameter of the other rollers. A single roller portion may replace the three rollers having the same combined shape or form as the three rollers. In a film processing machine A, Fig. 1 (not shown), the guiding means at each guide point comprises guide rollers 50, 52, 54 and 56 injection moulded from polystyrene, mounted on " nylon " bearings 58 on a shaft 36. Between rollers 52 and 54 is a central roller 60, thereby constituting the three abreast rollers above. Each guide roller is formed with an outer cylindrical casing 62 having a centrally disposed annular crown rib 64 and roller 60 has a similar rib 68 of a larger overall diameter than ribs 64. The crown rib 64 influences the film strip 70 or 76 upon its respective roller so that it is guided at right angles to the longitudinal axis of the roller. Similarly, film strip 78 is influenced by rib 68 of the roller 60. Film 78 may be replaced by two film strips of similar width to 70 and 76, running over the two rollers 52 and 54. At one guide point in the machine A, a shaft 14 similar to shaft 36 is driven. Endless leader belts 28 and 37, driven by rollers 24 and 26 respectively attached to the shaft 14, may have the leading edges of a film strip or strips attached thereto to feed the film through the processing apparatus.
Patent GB-1191489-A (GB)
Title: Improvements in or relating to Motor-Driven Vibratory or Percussive Implements.
Inventor: WACKER HERMANN
IPC: E02D3/068
Filed: 1967-08-31
Abstract: 1,191,489. Percussive tools. H. WACKER and P. WACKER. 31 Aug., 1967 [2 Sept., 1966], No. 39784/67. Heading B4C. A motor-driven percussive implement, e.g. a tamper, comprises a working tool 8 connected to a spring cylinder 7 which is reciprocated within a housing 11 by means of a motor 1 via a transmission 2 and connecting rods 3, 10, a piston 4 mounted on the rod 10 and having a rubber stopper 4a, a bellows 12 connected between the housing and spring cylinder and a valve 9 being provided which is adapted to produce a continuous excess pressure in the interior of the implement. An oil bath is provided in the spring cylinder so that the moving parts are lubricated by means of an oil mist. In order to prevent the bellows from collapsing during operation of the tool, air is drawn in to the interior thereof via the valve 9.
Patent GB-920324-A (GB)
Title: A method of and device for heating the bottom section of a tube ice generator
IPC: F25B1/00
Filed: 1961-11-07
Abstract: 920,324. Ice making. STAL REFRIGERATION A.B. Nov. 7, 1961 [Nov. 26, 1960], No. 39838/61. Class 29. In a method of continuously heating the lower ends of the tubes of an ice generator incorporated in a refrigeration system, condensate from the system is used to evaporate a medium in a heat exchanger, the medium then passing to the bottom of the tube ice generator where it condenses, and returns to the heat exchanger by gravity. As shown diagrammatically, a device for performing the above method has an ice generator 3 having tubes 9 round the bottom of which is a chamber 6 connected to a heat exchanger 7. The heating medium evaporates in the heat exchanger and condenses in the chamber 6, heating the tube bottoms. The refrigeration circuit has a compressor 1, a condenser 2, an expansion valve 5, an evaporator 4, and a tube loop 8, in the line E between the condenser and the expansion valve, passing through the heat exchanger. Rapid heating of the tubes to release the ice is achieved by closing a cock 10 in the line D connecting the ice generator and the evaporator, and opening a cock 11 in a by-pass line A to allow warm refrigerant to pass from the compressor direct to the ice generator.
Patent GB-1237001-A (GB)
Title: Device in a bearing combination comprising a spiral groove bearing and a rolling bearing, actuated by an external, hydraulic system
IPC: F16C21/00
Filed: 1968-08-21
Abstract: 1,237,001. Bearings. SVENSKA KULLAGERFABRIKEN A. B. 21 Aug., 1968 [22 Aug., 1967], No. 39947/68. Heading F2A.  A bearing assembly consisting of a spiral groove bearing and a rolling bearing has means provided for transferring the load from one bearing to the other comprising an hydraulic system containing a valve which is subjected to the fluid pressure in the spiral groove bearing. A shaft 5 carries a hub 4 to which is secured a plate 1 having spiral grooves 3 and a race 6 for an axial roller bearing. The spiral groove portion of the plate bears against a stationary plate 2 the underside of which rests on a member 2a which has a plurality of radial cooling passages 25 through which cooling fluid is passed. The lower race of the rolling bearing is formed in an annular piston 7. The pump P forces fluid through passage 19 to the base of the piston 7 and forces the piston against the stop 8, thereby forming a clearance 9 between the two plates of the spiral groove bearing. Lubricant is supplied to this clearance via passage 10 and may pass via passages 11 and 12 to the roller bearing. When the shaft rotates the piston 16 tends to move outwards under centrifugal force, and when a certain speed is reached such that the centrifugal force overcomes the force in the spring, the piston closes the passage 11. The pressure of fluid in the spiral groove bearing increases and due to the increase in the pressure in passage 13 the valve 15 is moved into the position indicated by the broken lines in Fig. 2. The pump P then supplies fluid via passage 21 to the chamber 22 and forces the piston 7 downwards, thereby causing the load to be born solely by the spiral groove bearing. When the valve 15 is in its displaced position and the piston 7 in its lower position the switches 24 and 23, in the electrical circuit supplying current to the motor operating the pump, are opened and the pump is therefore switched off. If the speed of rotation of the shaft falls below a given value the pressure in passage 13 becomes insufficient to keep the valve displaced and the spring 17 returns it to the position indicaby the solid lines in Fig. 2. The switch 24 is thereby closed and the pump actuated. Fluid is fed to the underside of piston 7 so that the rolling bearing carries the load and the spiral groove bearing relieved;
Patent GB-1494965-A (GB)
Title: Pipe guide head for well-pipe rackers
IPC: E21B19/14
Filed: 1975-10-01
Abstract: 1494965 Boring earth &c B J-HUGHES Inc 1 Oct 1975 [22 Nov 1974] 40201/75 Heading E1F A pipe guide head for well pipe racking apparatus has a hollow body 2 with a pipe guiding arrangement at one end which comprises a pair of slide plates 12, 13 mounted within the body for extension and retraction relative to the body, fluid actuators 19, (27), Fig. 1 (not shown), for extending and retracting the slide plates, and pipe retainers 32, 33 mounted on the body and linked with the slide plates. The slide plates have pipe-receiving arcuate openings 14, 15 of different sizes, and when one of the plates is extended, its respective pipe retainer is automatically pivoted about the body by means of the linkage 37, 40 to a closed position in which it retains the pipe in the slide plate opening.
Patent GB-1458461-A (GB)
Title: Switch device with temperature-dependent actuating element
Inventor: SAUER R
IPC: H01H37/04
Filed: 1974-09-16
Abstract: 1458461 Thermal switch BEHR-THOMSON DEHNSTOFFREGLER GmbH 16 Sept 1974 [25 Sept 1973] 40246/74 Heading H1N A thermal switch comprises an actuator 3, Fig. 1, and a switch element 2 engaged in recesses 13, 22 of apertures at opposite ends of a housing 1 of elastically resilient material. The actuator 3 may comprise a housing 20 containing a substance which expands when heated to operate a piston 21. A switch actuator is engaged over piston 21 and has a flange 17 engaged by a return spring 11. In a modification the internal diameter of the housing 1 is large enough for the actuator 3 to be inserted from the upper end to rest against the formation 15 and is retained in position by an annular insert (12) Fig. 2 (not shown) having a bead (18) engaging an annular groove (19) in the wall of the housing 1. The thermal element may alternatively be a bi-metal snap-action spring. The thermal element casing may also be integral with the housing 1 or may be frictionally fitted in a recess of the housing.