baber/WOPTO huggingface dataset:
Patent GB-857412-A (GB)
Title: Improvements in and relating to ships' stabilising fins
Inventor: ALLAN JAMES FOGGO
IPC: B63B39/06
Filed: 1956-09-17
Abstract: 857,412. Stabilising ships. NATIONAL RESEARCH DEVELOPMENT CORPORATION. Sept. 16, 1957 [Sept. 17, 1956], No. 28387/56. Class 113. A ship's hull has stabilising fins built into the hull, a large part of the lower surface of each fin in transverse section sloping upwardly away from the side of the hull. Figs. 1 and 3 show transverse and longitudinal sections of a fired fin which is located well below the water line and shaped about a mean surface substantially normal to the median plane of the hull and represented by the line MS. Fig. 4 shows the longitudinal sections of a fined fin provided with a flap pivoted on a horizontal transverse axis TA. Instead of a single pair of fins, a cascade of pairs may be used. Fig. 9 shows an arrangement for connecting both pitch and roll. The flaps F are carried each by its own shaft 11a, 11b and rotated from hydraulic cylinders 13p. 13s, 14p, 14s supplied by fluid from a pump P driven by a motor M, the supply of fluid being controlled by valves 29p, 29s actuated from control systems CCp, CCs set in action by a roll detector RD and a pitch detector PD. The arrangement shown may correct for pitch and roll simultaneously or if only one motion is experienced or is to be corrected the appropriate detector may be switched off by means of switches S 1 , S 2 . If desired an automatic switch may be employed to bring into action stabilisation for pitching or for rolling according to which ever of the two motions is predominent.
Patent GB-465027-A (GB)
Title: Improvements in or relating to mops and receptacles therefor
IPC: A47L13/58
Filed: 1936-10-20
Abstract: 465,027. Mop - wringing appliances. CARTER, W. H. Oct. 20, 1936, No. 28505. [Class 19] A pail or like receptacle 4 is provided with a curved strip 2 of rigid material secured across the mouth in a vertically slanting direction to receive the head of a mop. A flap 6, 6a is hinged at one end 5 to the strip 2, and is provided at the other end with a hook member 8 which engages the mop head. One or more hinges 7 permit the member 6a to move inwardly and squeeze the mop as it is rotated. In one modification, a lever or handle 9 may be provided on the flap 6a. In another modification, the strip 2 may be extended to half the width of the pail and have holes to permit drainage back to the pail. In a further modification, the flap 6, 6a may be formed of a plurality of hinged slats, the end one carrying the hook 8, or the slats may be substituted by a strip of flexible material rubber proofed.
Patent GB-535903-A (GB)
Title: Electromagnetic control device
IPC: G03B19/18
Filed: 1939-10-24
Abstract: 535,903. Clutches. FODOR, F. H. Oct. 24, 1939, No. 28594. [Class 80 (ii)] An electromagnetic clutch described for driving a drum 6 for operating a film 8 which is caused to adhere to the drum by means of suction applied by means of spaced discs 41, 42, 43, is constructed with a pair of concentric driving-shafts 12. 14 to which are secured electromagnets 20. 30. The shafts 12, 14 are mounted in bearings in a housing 3 and are driven in opposite directions from shafts 10, 11, by flexible connections and worm gearing. The magnet 20 receives current from rings 23, 24 and brushes A, and the magnet 30 from rings and brushes 31, 32, and the electric circuit is controlled by a switch which permits only one of the magnets to be energized at once, and when the switch passes through neutral position it energizes a fixed magnet 53 which acts as a brake, so that the change of direction of rotation of the drum 6 is assisted by the braking action. The shaft 7 of the drum 6 is mounted so as to be prevented from axial motion, and it is fitted .at its end with a spider 50 to which are attached plates, 51, 52 of Norwegian iron or other metal susceptible to magnetic influence but not magnetizable to an appreciable extent. The clutch and brake are mounted in a casing 2 which is fitted with a bearing lever 38 which prevents magnet case 26 from warping under the action of centrifugal force. The gem casing 3 is made oil-tight by gaskets 34, 35.
Patent GB-1004618-A (GB)
Title: A process for nitriding ferrous metals
IPC: C23C8/50
Filed: 1962-07-25
Abstract: Ferrous metals, such as case-hardened, tempered and stainless steels, are nitrided, e.g. at 580  DEG C., in salt baths containing cyanate e.g. in amount 42-50%, wherein the salt melt being used contains less than 0.5% of dissolved iron, e.g. 0.1% Fe.  The low iron content is <PICT:1004618/C6-C7/1> achieved by ensuring that all those components of the furnace, especially the bath container, coming into contact with the salt melt contain at most 10% Fe and do not dissolve in the melt.  Thus a bath container e.g. consisting of iron, may be internally lined with one of the Group IVb, Vb, VIb, VIIb or VIIIb metals, excepting iron, preferably Ti, Zr, V, Cr, Mo, Co, Ni, Al, or an alloy of those metals, by applying as a sheet lining or spraying, or a non-metallic layer such as of alumina, zirconia and/or titania may be applied.  As shown, a crucible 2, inside a furnace chamber 1, may be lined with a titanium layer 3 and contain an aluminium pipe 4 formed with holes for introducing air into the salt melt.  For electrode heating the salt melt, the electrodes may consist of or be coated with an iron-free material.  Prior methods are disclosed wherein the salt bath, operated at 570  DEG C., contains cyanide and 32-40% cyanate e.g. 35-93% KCNO. Specification 891,568 is referred to.
Patent GB-1190246-A (GB)
Title: Rotor System for Rotary Wing Aircraft
IPC: B64C27/43
Filed: 1967-06-21
Abstract: 1,190,246. Rotary wing aircraft rotor. BELL AEROSPACE CORP. 21 June, 1967 [6 July, 1966], No. 28650/67. Heading B7W. A rotary wing aircraft see-saw rotor pivots about an axis a-a (e.g. on trunnions on member 20 splined on to a drive shaft 10) and has two blades 32 capable of pitch change about a radial axis c-c. The blades 32 are attached to flexible portions 22, 24 of a hub 12 to allow flapping motion with respect to the hub as if the blades were pivoted along axes b-b. Each blade 32 has a pitch change horn 36, 38 pivoted to a control rod 42 of a normal cyclic and collective pitch control mechanism, the axis of pivoting being so displaced from the axis b-b that a flapping displacement of a blade 32 (e.g. as upwards shown in Fig. 4) causes a pitch change to the blade (e.g. lowering the leading edge 34) in a direction to restore the blade to its initial position before flapping.
Patent GB-650811-A (GB)
Title: Improvements in or relating to change-speed transmission gears
IPC: F16H3/04
Filed: 1946-09-25
Abstract: 650,811. Two-speed gear. SCINTILLA, Ltd. Sept. 25, 1946, No. 28671. Convention date, Sept. 25, 1945. [Class 80(ii)] In a change-speed gearing contained in the pulley of a motor, a hollow spindle is secured to one bearing of the motor to surround the driving shaft and carry the gearing, the spindle containing a coupling member rigidly secured to the driving shaft and engageable with either the gearing or the pulley. The shaft 5 of a motor 1 carries a coupling member 4 rotating within a stationary hollow shaft 3 secured to the motor casing. The member 4 drives a coupling device 7 through a resilient bundle of spring blades 6, the device being axially movable, when the spring-loaded detent 21 in the knob 17 is released, to engage or disengage the dog teeth 8 on the device with the corresponding teeth 14 in the bore of a driven pulley assembly 15. The internal teeth 12 of the assembly 15 are similarly engageable by the external teeth of an eccentrically mounted internally and externally toothed planet gear 11, the internal teeth of which are engageable with teeth on a stationary sun gear 10 rigid with the shaft 3. In operation the coupling device 7 is moved to the right to engage the teeth 8, 14 for direct drive, and to the left to engage the planet gear 11 for a reduced ratio drive.
Patent GB-1582784-A (GB)
Title: Push-button electric switch for opening electric circuits
IPC: H01H13/20
Filed: 1977-07-08
Abstract: The push-button switch (1) has a contact bridge (16) which, in the closed position, lies against current-carrying contacts (4, 5) and which can be adjusted by means of a button (15) inserted in a housing (11) so that it can be displaced against spring force. One or more intermediate components (22) which can be actuated by the button (15) are disposed between the latter and the contact bridge (16), by means of which components the adjustment movement of the button (15) can be deflected in such a way that the contact bridge (16) can be adjusted fully or partially against the adjustment movement (A) of the button (15) towards the latter. The intermediate component may comprise one or two rectangular levers (22) lying diametrically opposite one another, pivotably mounted in the housing (11) of the push-button switch (1), whose one end (23) interacts with projections (30) of the button and whose other end (24) interacts with the contact bridge (16). As a result of the deflection of the adjustment movement of the button (15), the contact bridge is lifted off the contacts (4, 5). This ensures high operational reliability, in particular constant perfect contact making in a small structure. <IMAGE>
Patent GB-757010-A (GB)
Title: Improvements relating to truckmixers
IPC: B28C5/42
Filed: 1954-10-06
Abstract: 757,010. Concrete mixers. BLAW-KNOX CO. Oct. 6, 1954 [Oct. 7, 1953], No. 28777/54. Class 86. A truck-mounted concrete mixer in which the parts are arranged on a rectangular supporting frame 2 secured to the truck chassis so as to give the assembly a low centre of gravity comprises a water tank 3 mounted directly on said frame transversely across the end thereof nearer to the forward end of the truck, a pedestal 5 being disposed within the tank and carrying a bearing 6 which rotatably carries the forward closed end of the mixing drum 7. The rear end of the drum is supported by rollers 8. The drum 7 is mounted with its axis slightly to one side of the longitudinal middle line of frame 2 so that, in use, when the drum contents tends to collect more on the upward moving side of the drum, the combined centre of gravity of the drum and contents will coincide with said middle line. The drum is driven by an engine 14 which is coupled by a shaft 15, 17, 19 to a transmission 20 on the output shaft of which is a sprocket 22 carrying a chain 24 which engages with the drum sprocket 23. The transmission input shaft 19 has a pulley 38 which drives a water pump 35 through a V-belt 37, the pump delivering water from tank 3 to drum 7 either for flushing purposes or to form a component of the mixture, in which case a measured quantity is delivered.
Patent GB-1159070-A (GB)
Title: Improvements in/or relating to the production of Heptenes
Inventor: GREBBELL JOHN
IPC: C07C2/24
Filed: 1967-06-22
Abstract: 1,159,070. Heptenes. BRITISH PETROLEUM CO. Ltd. 29 May, 1968 [22 June, 1967], No. 28801/67. Heading O5E Heptenes are produced by co-dimerizing propylene and a butene at an elevated temperature over a catalyst prepared by dispersing sodium and/or lithium on an anhydrous potassium compound, the catalyst having been treated by either (a) incorporating a minor molar proportion of H 2  in the feed for at least part of the time for which the feed is passed or (b) removing the feed and contacting the catalyst with H 2  in the absence of the feed. The hydrogen may be passed intermittently, or continuously with the feed in an amount of less the 10 mol per cent. Alternatively the catalyst may be prepared in the presence of H 2  or hydrided by treatment with H 2  at 50-350 C. after preparation and before use. A preferred catalyst contains 0À5- 20% by wt. of metallic sodium dispersed on anhydrous K 2 C0 3 . The dimerization may be carried out at 100-200 C. and 800-2500 p.s.i.g. optionally in the presence of a solvent such as n-paraffins.
Patent GB-1504636-A (GB)
Title: Monolithic compound semiconductor arrangements
IPC: H01L21/82
Filed: 1975-07-09
Abstract: 1504636 Semiconductor devices SIEMENS AG 9 July 1975 [8 Aug 1974] 28824/75 Heading H1K Highly doped zones 8 of a conductivity type the same as that of a silicon substrate 1 are provided below a silicon oxide layer pattern 9 formed in etched recesses (6), Fig. 1 (not shown), by ion-implantation using an ion beam, e.g. of boron, directed substantially normally to the floor of the recess (6), a silicon nitride etching mask 5 also serving as a doping mask during the said ion implantation, and subsequently acting as an oxidizing mask during the oxidation of exposed silicon in the recess (6) formed in a surface zone 4 of a conductivity type different from that of the substrate 1, the oxide layer pattern 9 sub-dividing the surface zone into islands which are doped using an ion beam which penetrates the silicon nitride mask thereby forming a respective semiconductor element, e.g. a diode and a transistor in them. Prior to the epitaxial deposition of the surface zone 4, highly doped zones 2, 3 of a conductivity type different from that of the substrate 1 are provided in the surface region of the substrate. p-conducting zones 10, 11 are produced by boron implantation through the mask 5, and subsequently two p<SP>+</SP>-conducting contacting zones 12, 14 are formed by boron diffusion in the presence of oxygen, through windows chemically etched in the mask 5. An emitter zone is then provided by implanting arsenic or phosphorus, the mask 5 and SiO 2  layers which fill the windows above the zones 12, 14 acting as a barrier against the donors. The surface zone 4, which may be n-conducting, is epitaxially shown and the silicon nitride mask 5 is pyrolitically deposited from gas at about 800‹ C. The recesses 6 are formed by using an HF-H 2 O 2  mixture or an HF-HNO 3  mixture diluted with deionized water. Preferably, the specific resistance of the p-conducting silicon substrate 1 is not less than 5 ohm-cms, the thickness of Si 3 N 4  layer is about 1500 Š and the thickness of SiO 2 -layer in the recesses (6) is at least 1À5 Á. Reference has been directed by the Comptroller to Specification 1,363,515.
Patent GB-796866-A (GB)
Title: Improvements in or relating to apparatus for the addition to or abstí¡í¡ from bulk quantities of material of other quantities
IPC: G01N1/14
Filed: 1953-10-19
Abstract: 796.866. Sampling liquids. SMITH, W. G., and PROVAN, A. L. Oct. 1, 1954 [Oct. 19, 1953], No. 28832/53. Class 106(5) [Also in Group XXVIII] Apparatus for the addition to or abstraction from bulk quantities of other quantities which bear a predetermined relationship to the bulk quantities and/or each other has at least one measuring chamber with component parts 1. 2 one part having a helical groove 4 and the other a pin 8 whereby relative rotation of the parts causes an alteration in the capacity of the chamber. The part 1 is provided with a nozzle 3 while the part 2 is provided with a boss 5 to form a stop for a piston 6 connected by a shaft 7 and a clip 12 to a handle 11. To obtain a composite sample from, say, first and second batches of milk, both parts 1, 2 are provided with identical logarithmic scales which are adjusted so that like graduations coincide before the sample is taken from the first batch and expelled into a container. The second sample is then taken and added to the first after the parts 1, 2 have been adjusted until the graduation on the part 2 corresponding to the volume of the second batch is aligned with that graduation on the part 1 corresponding to the volume of the first batch. The volume ratio of the samples is thus equal to that of the batches. The logarithmic scales may be replaced by a single index on one part and a scale of ratios on the other part. The apparatus is provided with "O" rings 10 and 13 and with milled bands on the parts 1 and 2.
Patent GB-704058-A (GB)
Title: Improved power steering mechanism for road vehicles
IPC: B62D5/24
Filed: 1952-11-17
Abstract: 704,058. Fluid-pressure servomotor-control systems GENERAL MOTORS CORPORATION. Nov. 17, 1952 [Nov. 30, 1951], No. 28898/52. Class 135 Power steering mechanism for road vehicles comprises a manuallyoperable steering shaft 11 operating a valve 30 controlling a servomotor 20, said valve in its neutral position having pressure ports 58, 58a connecting with pressure fluid inlet 50 and spill ports 59, 59a, connecting with exhaust outlets 51, 51a, the spill ports being larger than the pressure ports. The shaft has a threaded end 12 engaging a nut 13 and is capable of limited axial movement. The nut has rack teeth 140 engaging a quadrant 15 on a shaft 16 connected by arm 17 to the steerable wheels. Piston 21 of motor 20 drives a rack 19 also engaging quadrant 15. The valve comprises a sleeve 41 fixed between bearings 40 on shaft 11, and is slidable in a housing 31 provided with the inlet 50, motor ports 52, 52a and outlets 51, 51a. The sleeve is centred in the housing by two or more pairs of spring- pressed plungers 34, the space between each pair being open to the inlet port, whereby inlet pressure also centres the sleeve, and the force due to the pressure and the springs must be overcome before axial movement of the shaft occurs. When the sleeve moves, e.g. to the right, its central land 56 closes pressure port 58a and increases the opening of port 58 and increases and decreases the openings of ports 59a, 59 respectively. Thus, application of pressure fluid through ports 58, 52 to the motor is cushioned by leakage through the open port 59. Further movement of the sleeve to the right further decreases opening of port 59 until finally when it is closed full power is provided. Movement of piston 21 causes recentring of the sleeve by axially moving the nut and shaft. If the power fails, manual steering occurs by engagement of bearing washers 37 with walls 47 in the valve housing, which walls limit the axial movement of the shaft, and a ball check valve 60 opens to prevent a fluid lock.
Patent GB-429018-A (GB)
Title: Improvements in and relating to electric power converting apparatus
IPC: H02M7/15
Filed: 1933-10-19
Abstract: 429,018. Converting. BRITISH THOMSON-HOUSTON CO., Ltd., Crown House, Aldwych, London.-(Assignees of Griffith, R. C. ; 107, Union Street, Schenectady, New York, U.S.A.) Oct. 19, 1933, No. 28976. Convention date, Oct. 26, 1932. [Class 38 (ii)] Voltage regulation of a D.C. circuit 10, fed from an A.C. circuit 11 through grid controlled valves 13, 14, is obtained by means of a vibrating regulator 25 which controls the current supplied to the saturating winding of a reactance 20 in a phase shifting circuit from which the grid voltage is obtained. In a modification of this, to ensure a drooping voltage characteristic after a predetermined load current has been reached the regulator 25 is in series with a further vibratory regulator having a current coil. This additional regulator does not operate until a predetermined load current has been reached. In a further modification shown in Fig. 2 an additional reactance 26 is connected in series with the reactance 20 in the phase shifting circuit and is provided with windings 27, 28 connected respectively across and in series with the D.C. circuit. These windings are connected so as to act in opposition. Under normal circumstances the winding 27 causes saturation of the core 26 to a point well above the knee of the saturation curve. When the load exceeds a predetermined amount the winding 28 causes desaturation of the core, thus altering the phase of the grid potentials and reducing the output voltage. A condenser 29 is connected in circuit with the reactances 20, 26 to compensate for the inductance of the reactance 26 under normal operating conditions. Specifications 373,526, 400,290, and 410,776 are referred to.
Patent GB-1007738-A (GB)
Title: Forced-flow once through vapour generators
IPC: F22B35/10
Filed: 1962-07-27
Abstract: 1,007,738. Forced flow steam boilers; regulating steam temperature. SULZER FRERES S.A. July 27, 1962 [July 27, 1961 (2)], No. 29052/62. Heading F4A. A forced flow, once through steam boiler operating at subcritical or supercritical pressure has at least two combustion chambers, parallelconnected wall lining tubes of the chambers being connected for series flow of the working medium from chamber to chamber. Thus as shown in Fig. 1 the boiler comprises two units A, B with respective combustion chambers 10A, 10B from which lead flue gas passes 12A, 12B. A feed pump 16 forces water through parallel-connected economizers 22A, 22B disposed one in each pass to a mixing vessel 28 whence the water passes successively through a conduit 30, the tubes lining the chamber 10B, a conduit 32 and the tubes lining the chamber 10A, generated steam flowing through a conduit 34 to parallel-connected superheaters 38A, 38B located one in each of the passes 12A, 12B and thence through a line 42 to a turbine 44. The installation operates with double reheat, the first stage consisting of a reheater section 46 in the pass 12B followed by a larger section in the pass 12A whilst the second stage consists of a single reheater section 56 situated wholly in the pass 12B. The combustion chambers are independently fired by tangential tilting burners 86 and the lining tubes are diametrically finned and welded together to form substantially continuous inner wall surfaces. To protect the tubes if the flow velocity of working medium therethrough falls below a critical value, as may occur at low loads or when starting up, a recirculating system is imposed on the through flow system, the medium being withdrawn from the conduit 34 by a pump 80 which forces it through a non-return valve 82 into the mixing vessel 28. The recirculating pump may alternatively be located in the conduits 30 or 32, a bypass then being provided for the working medium flow during normal operation. Superheat and reheat temperatures are controlled at reduced loads by differentially adjusting the burner tilt in the chambers 10A, 10B. Alternatively control may be effected by recirculation of cooled flue gas to the chambers. At a certain low load further control is obtained by differential firing of the chambers. In a modification, Fig. 9 (not shown) sections of the superheater are located in each gas pass and are serially connected whilst the first and second stage reheaters each consist of single sections located one in each pass. Superheat temperature is controlled by attemperation whilst reheat temperature is controlled by adjusting burner tilt or by gas recirculation and then by differential firing of the burners. In a further modification, Fig. 12 (not shown), there is a single stage of reheat the reheater being disposed wholly in the gas pass 12A. The chambers 10A, 10B are differentially fired and burner tilt or gas recirculation used to control reheat temperature.
Patent GB-851636-A (GB)
Title: Improvements in or relating to roof covering materials
IPC: B29C44/12
Filed: 1958-09-10
Abstract: 851,636. Roof covering; laminates. RUBEROIDWERKE A.G. Sept. 10, 1958 [Sept. 14, 1957], No. 29054/58. Class 140. A roof covering comprises a synthetic resin sheet in the form of a strip reinforced by a fabric or fleece insert of organic or inorganic fibres, coated on one side with a dense, rigidly adhering hard and friction-resistent layer of rock fines. The synthetic resin sheet may comprise polyvinyl chloride, a vinyl chloride copolymer, polyethylene, polyisobutylene, polyurethane or a synthetic rubber. The synthetic resin sheet may be given a foam structure by the addition of a gas or foam forming material thereto. The rock fines consist of sand grinding dust, basalt or ground stone, which may be coloured, e.g. by metallizing with a metal bronze. The rock fines may be adhered by means of polyvinyl chloride, vinyl chloride - vinyl acetate copolymer, polyvinyl acetate, bitumen, or a mixture of bitumen and polyisobutylene. The roof covering comprising the foamed synthetic resin material may be secured, using an aqueous dispersion of thoroughly plasticized polyvinyl acetate, to a support of oiled or bitumenized paper, or thin finely-sanded tar or bitumen roofing felt.