baber/WOPTO huggingface dataset:
Patent GB-2031523-A (GB)
Title: Variable area nozzle for a gas turbine engine
IPC: F02K1/12
Filed: 1979-06-06
Abstract: In a jet pipe and variable area final nozzle assembly, the jet pipe 12 is necked at a region upstream of the final nozzle 10 to reduce the diameter of the remainder of the jet pipe downstream of the neck to a diameter more nearly equal to but not less than the maximum throat area of the nozzle. The nozzle flaps 16 are pivoted at 22 to the end of the jet pipe 12, although they could alternatively be translatable, and have an upstream portion 20 which overlies the jet pipe. An actuating mechanism preferably in the form of a unison ring 30 operated by jacks (Fig. 2, not shown) is mounted around the reduced diameter portion of the jet pipe 12 and operates on the upstream portions 20 of the nozzle flaps 16 via a roller and cam arrangement 26,24 to vary the area of the nozzle. An outer fairing 14 which need be of no greater diameter than the maximum diameter of the jet pipe 12 surrounds the jet pipe, the actuating mechanism and the nozzle flaps 16. <IMAGE>
Patent GB-2054130-A (GB)
Title: Improvements in and relating to solar powered heating systems
IPC: F24D11/00
Filed: 1979-07-25
Abstract: An indirect solar-energy-driven heating system in which heat from a liquid in a first system, which includes a solar panel 10, is transferred (e.g. by a heat exchanger 14) to liquid contained in a second system (e.g. 16, 28, 30), includes a drain down tank 24 into which liquid contained in the first system is caused to drain when the temperature of the liquid in the solar panel 10 falls outside a given temperature range, sensed e.g. by electronic monitoring or thermostatic means at the solar panel and optionally in the cylinder 16. The drain tank 24 may have a pressure relief valve venting to atmosphere or to a water feed tank (54, Fig. 4) for the system. The drain tank may be formed from plastics or metal. <IMAGE>
Patent GB-2032305-A (GB)
Title: Rotary index table devices
IPC: B23Q16/06
Filed: 1979-09-07
Abstract: A multi-station rotary index table has an indexing drive mechanism with a plurality of drive transmitting rollers (27) arranged to be engaged successively by a retractable latch member (43) on a reciprocating slide (28). The slide (28) is driven by a pneumatic piston and cylinder device and two abutments (39,40) are arranged to engage rollers (27) after forward movement of the slide member preventing forward or reverse movement of the table. <IMAGE>
Patent GB-2035648-A (GB)
Title: Rotatably mounted member
IPC: G07F17/34
Filed: 1979-10-19
Abstract: A member, particularly a reel of a fruit machine, is rotatable through a number of predetermined stopping positions. The member is rotated with an electric motor and can be stopped in registration with any one of the stopping positions by means of an indexing device, comprising, for example, a finger (10) or pawl (33) which is engageable with teeth (7 or 32) around the periphery of the member. The electric motor is integrated with the member. For example, the member may comprise a metal disc (6) which forms the rotor of a rotary linear motor. <IMAGE>
Patent GB-2034866-A (GB)
Title: Small firearm for caseless ammunition
IPC: F41A9/24
Filed: 1979-10-22
Abstract: A small firearm comprising a housing 11, a barrel 26 and a cartridge holder 21 which comprises a rigid body having four symmetrically arranged faces from each of which extends into the body a series of compartments 23 for accommodating cartridges 24 in the holder 21. The holder 21 is guided for rearward retracting movement within the housing 11 during firing of a succession of cartridges from the forwardly facing face of the holder 21, and during said retracting movement the holder 21 is displaced, by means of a rail 31, in a step-wise manner at right angles to the direction of retracting movement of the holder 21 into alignment with the barrel 26. During forward, return movement of the holder 21, the latter is rotated by 90 DEG  in order to bring another face of the holder 21 into a forwardly facing position ready for firing of the cartridges from said another face. In an alternative embodiment, the holder has six series of compartments and is rotated through 60 DEG  during return movement of the holder. <IMAGE>
Patent GB-2036420-A (GB)
Title: Electric Discharge Lamps
IPC: H01J61/30
Filed: 1979-11-22
Abstract: An arc tube (10) for a high pressure, metal halide, electric discharge lamp comprises a ceramic light-transmissive tube (11) e.g. of alumina, having smaller cross- sectional ends (12). Cermet end closures (14) are sealed to the tube ends and carry electrodes (17) and leads (18) which are connected by conductive cermet. The reduced cross-section of the ends and closures reduces radiation loss and reuses 'cool spot' temperature. It also minimizes loss of volatiles during final sealing. <IMAGE>
Patent GB-2042531-A (GB)
Title: Process for preparing D-???-amino acids
IPC: C12R1/04
Filed: 1980-01-31
Abstract: D-N-Carbamoyl-???-amino acids are prepared by subjecting 5-substituted hydantoins to the action of a cultured broth, cells or treated cells of a micro- organism or an enzyme extracted from the cells, said microorganism being one cultured in a culture medium containing metabolites of pyrimidine bases or their analogs as inducers and having an ability of hydrolyzing the 5-substituted hydantoins so as to substantially produce D-N-carbamoyl-???-amino acids. The accumulation of the enzyme in cells can be further increased, when a metal ion is used in combination with the inducer in the culture. The D-N- carbamoyl-???-amino acids are converted into D-???-amino acids by decarbamoylation using nitrous acid or a microbial enzyme.
Patent GB-2048523-A (GB)
Title: Fire safe valve
IPC: F16K17/38
Filed: 1980-02-21
Abstract: A fire safe valve 10 has a valve body 12, a valve closure member 18 having a stem 24 and slidable in a valve chamber to open or close flow through a flow passage in the valve body, a shoulder 28 on the stem 24, and a bonnet 20 connected to the body 12. The valve also includes a seat 26 surrounding the stem 24 and adapted to be engaged by the stem shoulder on back- seating, means sealing between the stem 24 and the bonnet bore outward of said seat, an actuator 32 connected to move the stem 24 and said valve closure member 18, and a sleeve 50 surrounding a portion of the stem. A fusible material 68 supports the sleeve 50 in a normal stop position to limit the outward movement of the stem to prevent backseating, melting of the fusible material 68 allowing the sleeve 50 to move to communicate chamber 44 through passage 72 with a vent 74 whereby the valve closure member moves to its closed position and the stem shoulder backseats with metal-to- metal contact. <IMAGE>
Patent GB-2074128-A (GB)
Title: Mailing-containers and a method of manufacture thereof
IPC: B31B39/00
Filed: 1980-04-18
Abstract: A method of making mailing containers (27) comprises centrally folding a web (10) of lining material, applying webs (12, 13) of outer sheet material to the outside faces of the folded lining material web so that the latter is completely covered, securing together the edge regions of the outer material webs where they project beyond the fold in the lining material web, securing an edge region of each outer material web to an associated part of the lining material web at the side opposite the fold in the lining material web, and securing all the webs along two spaced lines transversely of the webs, all the webs otherwise being unattached over the remainder of their surfaces. The resulting mailing container is closed at one end and along two sides, it comprises a centrally-folded lining sheet located between rectangular outer sheets, the four layers being unlaminated except where all the layers are secured together at two opposed edge regions, the two outer sheets which extend beyond the fold in the lining sheet, are secured to one another at the closed end of the container and, at the open end, each outer sheet is secured along the edge to the associated part of the lining sheet. Lining-free parts of the outer sheets are provided for forming a closure at the open end of the container. <IMAGE>
Patent GB-2051472-A (GB)
Title: Crystal resonator with thickness shear mode oscillations
IPC: H03H9/02
Filed: 1980-04-28
Abstract: A crystal resonator (10) comprises surfaces defined by opposed spherical arcs (12),(12') each having a surface (14, 14') defining a circle, the surfaces (14, 14') being opposed and parallel. The ratios of the width (a) (contour length) of the spherical arcs (12, 12') to the thickness (t) of the resonator (10) and to the diameter (b) of the circular surfaces (14, 14') are selected so as to avoid coupling of the fundamental with spurious vibrations and decrease the vibration loss, thereby making it possible to provide a small sized crystal resonator of which the ratio between the contour length and the thickness thereof is small. <IMAGE>
Patent GB-2054364-A (GB)
Title: Apparatus for blanching and frying potato-based foods
IPC: A23L19/18
Filed: 1980-06-02
Abstract: An energy saving apparatus for frying snack foods comprises slicing and rinsing sections 1, 2 followed by blanching and frying sections 3,4. Hot exhaust gases from the frying section 4 are used to heat water in a heat exchanger 14, heated water from the exchanger 14 being passed to a steam generator 12. Water in the generator 12 is heated to produce steam by hot oil from the frying section 4, the resultant steam being used in the blanching section 3. <IMAGE>
Patent GB-2081033-A (GB)
Title: Sewing Machine
IPC: H02P25/24
Filed: 1980-07-31
Abstract: A sewing machine which includes an electric motor having a stator winding in which a switch is provided in the stator winding circuit for varying the torque output of the motor, the switch in one position enabling normal torque to be produced by the motor for sewing purposes and in another position shunting out part of the stator winding so as to produce increased torque from the motor for sewing heavier material. <IMAGE>
Patent GB-2055669-A (GB)
Title: Perforation of web material
IPC: B23P15/40
Filed: 1980-08-01
Abstract: A device for perforating or cutting a moving web of paper by means of pins 8, especially uniting paper for use in a cigarette filter attachment machine, comprises a roller 6 carrying pins 8 for perforating the paper 14 in cooperation with a backing roller 7 arranged to support the paper while it is being perforated, the backing roller being driven so that its peripheral speed equals that of the perforating roller, and having a deformable surface formed with indentations corresponding to the positions of the pins, the deformable material forming the surface of the backing roller being such that the indentations are formed by the pins when the rollers are first operated. The surface portion or portions of the backing roller aligned with the pins may comprise a thin metal portion in the form of a sleeve which covers recesses in the main body of the backing roller. The sleeve is perforated by the pins when the rollers first operate. <IMAGE>
Patent GB-2081165-A (GB)
Title: Razors
IPC: B26B21/22
Filed: 1980-08-08
Abstract: A razor of the kind in which a shaving unit 10 can pivot relative to the handle in response to the pressures which result when the unit contacts the skin during shaving comprises a handle having, at the end adjacent the shaving unit, two cantilever leaf springs 11n, 11p which contact the shaving unit, one or other of the springs being deflected as pivoting occurs. Consequently, when the shaving unit is removed from the skin the leaf springs ensure that the shaving unit is restored to a non- deflected position. The shaving unit can be supported by outwardly directed arms on opposite sides of the leaf springs, the arms being provided with pivots which engage in recesses in the shaving unit. <IMAGE>
Patent GB-2083515-A (GB)
Title: An improved roof gutter
IPC: E04D13/158
Filed: 1980-08-28
Abstract: A roof gutter of the type consisting of a channel with a rear flange, a bottom, and a front flange higher than the rear flange, and with overflow ports 19 in the front flange below the level of the top of the rear flange, wherein: the front flange has a longitudinal formation 18 with a surface which, viewed from the front, is upwardly (22)  POUND  facing, and the overflow ports are located in the said upwardly facing surface. Alternatively the groove formation 18 may be replaced by a rib having apertures in its upwardly facing surface. Brackets 31 are used to mount the gutter and a fascia panel 20 which interengages therewith. The fascia panel and bracket support the front edge of a fascia. <IMAGE>
Patent GB-2066681-A (GB)
Title: Solar distiller
IPC: C02F1/14
Filed: 1980-11-12
Abstract: A solar distiller comprising a distillable liquid container 14, a panel 22 of transparent material covering the container 14, a distillate collector 15 fixed with respect to the container 14, the transparent panel 22 sloping downwardly to the collector 15, the arrangement being such that when liquid is placed in the container 14 and the distillate is subject to solar energy radiation, the distillate evaporates from the distillable liquid, condenses on and flows down the undersurface of the sloping transparent panel 22 and releases therefrom into the distillate collector 15. <IMAGE>
Patent GB-2070212-A (GB)
Title: Combustion apparatus and process
IPC: F23G5/16
Filed: 1980-11-28
Abstract: Substantially smokeless combustion of refuse or other liquid or solid fuel may be effected in apparatus comprising a sub-stoichiometric combustioner chamber (1) in which the fuel may be burnt sub- stoichiometrically to produce a stream of dirty combustible gas, a final combustion chamber (26) that includes a tubular portion in which there is a circumferential slot (8) through which air may be drawn into the chamber by gas flowing along the portion, and a duct (22) for leading the stream of dirty combustion gas to the tubular portion and chamber (26). The chamber (26) is preferably horizontal and either or both sides of the slot are preferably defined by flanges (29 and 30). There may be a heat exchanger (10) for collecting the heat. <IMAGE>
Patent GB-2089291-A (GB)
Title: Portable rocking machine for soothing a baby in a perambulator
IPC: B62B9/22
Filed: 1980-12-13
Abstract: An electric motor, such as a car windscreen motor, which is powered by a battery provides the primary drive. The motor output shaft is connected via a crank to push rods (8) which are guided to provide a reciprocal linear motion. To provide variable speed two arms (13) which are held between pivots (9 and 9A) and driven by the push rod (8) have a number of holes in them to accommodate a further pivot (12). From this pivot point a rod (1) extends out to be connected to the axle of the pram (15) by a latch. The motor, battery and switch are all contained in a case (4) with its own carrying handle (10). The drive unit is further enclosed by a guard (11). <IMAGE>
Patent GB-2090139-A (GB)
Title: Improvements in Insecticidal Compositions
IPC: A01N31/02
Filed: 1980-12-29
Abstract: Insecticidal compositions comprising 2 to 1 parts by weight of chlorpyrifos and 1 to 2 parts by weight of bis(2,3,3,3-tetrachloro-n- propyl)ether, which are particularly effective in killing and controlling insects of the order Lepidoptera, e.g. Egyptian cotton leafworm.
Patent GB-2069326-A (GB)
Title: Protective device for a wiper blade
IPC: B60S1/38
Filed: 1981-01-15
Abstract: A protective device 20 for a windscreen wiper blade comprises a split sleeve 22 provided with a wiper lip 32. The device may be clipped onto wiper rubber 10. The object of providing the protective device with a lip is to enable it to be used for cleaning the windscreen during marshalling operations instead of the wiper blade thereby preventing wear of the latter. <IMAGE>
Patent GB-2071615-A (GB)
Title: Apparatus for dispensing sheet material, e.g. paper towelling, from rolls
IPC: A47K10/36
Filed: 1981-02-20
Abstract: In apparatus of the type comprising a case (1) which has at an upper cavity (13a) for a spare roll (15a) and a lower cavity (13b) for a roll in use, a lower dispensing passage (4), and a withdrawable retaining means (12) interposed between the two cavities, the retaining means (12) is actuated by a bearing means (11) positioned in the lower cavity and which is not accessible from outside the case. The means (11) and (12) are in the form of rods carried between two pivotally mounted arms (8a). The rod (11) in its retaining position, where it supports the lower roll, is at a distance from roller 2b, which together with a movable roller (2a) defines the dispensing passage (4), less than the diameter of the cylindrical roll support (16b). Pulling on the final length of material attached to the support (16b) causes both roller (2a) and rod (11) to move, thus allowing empty support (16b) to be expelled and rod (12) to move and allow the spare roll to drop down. Spring (20) then causes rods (11) and (12) to return to their retaining positions. <IMAGE>
Patent GB-2070863-A (GB)
Title: Adjusting electrical contacts
IPC: H01H11/06
Filed: 1981-03-04
Abstract: A method of adjustment of the relative positions of replacement fixed and movable contacts 2, 16 in an electrical switch wherein the movable contact 16 is adjustably mounted by a screw 17 on a spring biased movable support 13 consists in substituting, for a worn fixed contact 2, Fig. 1, a fixed pseudo-contact 26, Fig. 3a having a pseudo-contact surface 27 set back with respect to the contact surface P of a new fixed contact, replacing the worn movable contact 16 by a replacement movable contact 16% but leaving the screw 17 loose, moving the contact support 13 to the contact closed position to cause the new movable contact 16% to be displaced and to abut the pseudo contact surface 27 without spring pressure, fully tightening the screw 17 and finally replacing the fixed pseudo contact 26 by a new fixed contact. <IMAGE>
Patent GB-2078029-A (GB)
Title: Electric motor speed controller and method
IPC: H02P7/29
Filed: 1981-06-12
Abstract: An electric motor speed controller circuit comprises at least one power transistor (12) (or thyristor or triac) in series between the motor (14) and a power supply (10) to form a power circuit such that current flows between the power supply and the motor through the transistor only when a signal current is supplied to the base (12a) of the transistor and which further comprises a control circuit (F) for supplying a signal to the base of the transistor which signal is pulse width modulated so that the width of the pulse is proportional to the value of a variable resistance (20), inductance or capacitance of the speed control. Such pulse width modulation is performed by comparing a voltage proportional to the variable resistance, capacitance or inductance of the speed control with a sawtooth or triangular waveform and providing pulses when such voltage is higher than the waveform voltage. The circuit and method of use thereof is particularly suitable for use with motors used to power electric vehicles. <IMAGE>
Patent GB-2081896-A (GB)
Title: Device for measuring the gas content of liquids
IPC: G01N33/28
Filed: 1981-07-20
Abstract: A device for measuring the gas content of a liquid for example lubricating oil from engine 7 comprises a measuring container (9) in which the gas content of the liquid can be read by filling the container with the liquid containing gas, allowing the gas to separate from the liquid in the container and reading the level of the liquid in the container, conduits (4, 5) connected to container (9) to allow the liquid to flow through the container, valve means (10, 11) for isolating the container from the conduits, a bypass passage (12) connected in parallel with the container for permitting the liquid to flow through the conduits when the container is isolated therefrom, and a pressure relief valve (13) for relieving pressure on the liquid in the container. <IMAGE>
Patent GB-2105828-A (GB)
Title: Monolithic lining of vessels such as furnaces and parts thereof
Inventor: WOMBLE KENNETH
IPC: F27B14/10
Filed: 1981-09-02
Abstract: An induction furnace (10) is monolithically lined or repaired by the steel liner method, the latter being a hollow drum (15') which is vibrated during the lining operation to consolidate the refractory lining formulation. The drum (15') is perforated and its opening (16) are occluded by an air-permeable and normally moisture-impermeable plastics material; during the lining operation the drum is evacuated to draw air via the occluded openings (16) from the interface between the refractory formulation and the drum (15'), thereby obtaining a lining having a void-free inner surface after removal of the drum (15') e.g. by melting down. The process can be used for relining other vessels such as ladles and tundishes, and relining furnace runners is also described. <IMAGE>
Patent GB-2085314-A (GB)
Title: Hydrocarbon cracking process and catalyst
IPC: B01J23/78
Filed: 1981-09-21
Abstract: The reaction of a hydrocarbon with steam or carbon dioxide or a mixture thereof in net endothermic conditions to produce a gas containing carbon oxides and hydrogen is carried out using a catalyst comprising the product of thermally decomposing and reducing intimately associated compounds of nickel and/or cobalt and of at least one metal whose oxide is difficultly reducible to metal; and a water- insoluble compound of an alkali metal oxide with an acidic or amphoteric oxide or mixed oxide. Owing to the high activity and resistance to carbon formation of the catalyst the process is especially advantageous when different hydrocarbon feedstocks are to be used at different times.
Patent GB-2108104-A (GB)
Title: Catalytic process for 1 acyloxy-alkatrienes
Inventor: BOCHMANN MANFRED
IPC: C07C69/145
Filed: 1981-10-16
Abstract: A method for the preparation of unsaturated esters containing at least 13 carbon atoms which comprises reacting a 1,3-diene of the formula:   <IMAGE> wherein each of R<1> and R<2>, independently, represents hydrogen or alkyl and R<3> represents hydrogen, alkyl or alkenyl, with a non-conjugated dienol ester of the formula:   <IMAGE> wherein each of R<4> and R<5> independently, represents hydrogen or alkyl, R<6> represents hydrogen, or an optionally substituted hydrocarbyl radical, in the presence of a rhodium or iridium compound and an organic halide of the formula:  Q-X wherein Q represents an optionally substituted alkenyl aralkyl, acyl or alkoxymethyl radical and X represents chlorine or bromine. The products are useful intermediates in the manufacture of detergents.
Patent GB-2091983-A (GB)
Title: A centrifugal spreader
IPC: A01C17/00
Filed: 1981-12-11
Abstract: A spreader has two centrifugal discs (2) which are interchangeable with other discs and arranged on a respective drive shaft (23). In order to change the spreading pattern of the spreader in such a manner that field edge strips can be covered with the same quantity of fertiliser per unit area; i.e. spreading density, as the rest of the field, without fertiliser being thrown beyond the edge of the field, a centrifugal border disc (9) also provided with throwing elements is provided. The border disc (9) is selectively mountable on one or the other of the two drive shafts (23). Furthermore the border disc (9) has at least one radially extending throwing element (14) as well as at least two throwing elements (15) which are arranged angularly symmetrically at an acute angle  beta  to respective tangents (17) to the circular path (16) of the outer edges of the throwing elements (15). The outer edges of the throwing elements (14, 15) of the border disc (9) have a smaller spacing from the drive shaft (23) than the outer edges of the throwing elements of the discs (2). <IMAGE>