baber/WOPTO huggingface dataset:
Patent GB-2040444-A (GB)
Title: Automatic Photomask Alignment System for Projection Printing
IPC: H01L21/30
Filed: 1979-12-07
Abstract: An automatic photomask alignment system 10 for projection printing includes a monochromatic light source, such as a laser 12, with a projection lens system to direct light onto a series of diffraction patterns (Figure 2) on a semiconductor wafer 32 in locations where alignments are to be made. At least one key (comprising an opaque square) (Figure 3) is located on a photomask 26 with which the wafer 32 is to be aligned. In use a light beam from the monochromatic light source 12 is directed through the photomask 26 and through the projection lens 30 onto one of the diffraction patterns on the wafer which results in a pattern of light spots (Fig. 5) and a screen 16 whose intensities at various locations are determined by the relative alignment of the key and the diffraction grating. The intensities of the light spots are monitored by a series of photodiodes 36. A step and repeat mechanism 34 is used to move the semiconductor wafer relative to the image of the photomask pattern which is projected onto the wafer. A feedback arrangement, employs the photocells 36 and may use servo motors, to drive the photomask, to align the locations where devices are to be formed on the substrate relative to the photomask 26, and to provide the alignment of the projected image with the proper locations for their information. <IMAGE>
Patent GB-2047655-A (GB)
Title: Agricultural vehicle
IPC: A01D90/10
Filed: 1980-03-04
Abstract: An agricultural vehicle has a base formed by a scraper conveyor (2) and at the rear end of the vehicle there is a discharge device (3) which cooperates with a transverse conveyor (5) when it is desired to discharge harvested material to one side or other of the vehicle. The transverse conveyor is mounted for pivotal movement between an operative position and a stowed position beneath the vehicle. The transverse conveyor is driven through a clutch (7) of a kind which can be fully disengaged simply by the pivotal movement between the operative and the stowed positions. <IMAGE>
Patent GB-2052408-A (GB)
Title: A play cart
IPC: B62K9/00
Filed: 1980-05-28
Abstract: A four-wheeled play cart has a chassis, a pair of rigidly interconnected driven wheels, and means for steering a pair of the wheels arranged to cause one of the driven wheels to be lifted off the ground. When the vehicle is steered around a curve, thereby avoiding the need for a differential between the driven wheels. In the illustrated embodiment the front wheels 4 are driven by a pedal crank shaft 8 and the rear wheels 6 are individually rotatably mounted on an axle 12 turnable by means of hand levers 16, 18 about a steering pivot, 14 which is inclined downwardly and rearwardly so that steering of the axle 12 tends to tilt the cart, the rear wheels being held on the ground by the weight of the rider in a seat 20 resulting in one of the front driven wheels being raised from the ground. <IMAGE>
Patent GB-2054206-A (GB)
Title: Fuel injection pumping apparatus
IPC: F02M41/14
Filed: 1980-06-05
Abstract: A fuel injection pumping apparatus includes a piston 22 located within a cylinder 26. The piston is connected to an annular cam ring of a rotary distributor type fuel pump to adjust the timing of delivery of fuel. A passage 20 conveys fluid under pressure to act on the piston to move the piston against the actions of a spring 29. The passage includes a check valve 35 to prevent movement of the piston and cam ring when a pump plunger is moved inwardly by a cam lobe on the cam ring and a further check valve 39 which prevents movement of the piston and cam ring when the plunger is allowed to move outwardly by the cam lobe. <IMAGE>
Patent GB-2052828-A (GB)
Title: Device for supporting a musical instrument
IPC: G10D3/00
Filed: 1980-06-06
Abstract: Violin shoulder rest comprises a support member (8) whose ends are provided with clamps (10) which fix the support to the instrument, and a rest member (22) fixed to the support by a locable universal joint (19). The clamps may be adjustable by means of slots (9) in the support. The universal (eg ball and socket) joint (19) is locked by a locking screw (21) and may be axially displaced and locked in a guide slot (18) in the support member (8). The support member is curved to conform to the instrument back but may be reversed. <IMAGE>
Patent GB-2053861-A (GB)
Title: Method and installation for cutting off and stacking bags, and in particular plastic bags
IPC: B65H31/26
Filed: 1980-06-09
Abstract: Before the cutting operation at 16, a first pressing means 37 is applied on the pile of bags 36, and after the cutting operation, a second pressing means 38 is moved from under the bag on top of the pile and applied to the top of the pile, the first pressing means is raised up, and a new length of bags is placed on the pile by causing it to pass between the first and second pressing means. <IMAGE>
Patent GB-2059536-A (GB)
Title: Ultrasonic Cleaning
IPC: B23D79/00
Filed: 1980-07-09
Abstract: In a method and apparatus for the cleaning of machined workpieces, for example the removal of drill shavings and burrs which remain attached, the workpiece, e.g. tube 8, is clamped between two clamping elements 9, 10 in free air, and ultrasonic vibrations from emitter 11 are applied to the assembly. In a preferred arrangement, one of the clamping elements 9 is secured in resilient manner 9a on a machine structure, and the other clamping element 10 is connected by a vibration source 11 to an actuator, such as a fluid-operable ram 12, 13, mounted on the machine structure. An alternative arrangement is also described. <IMAGE>
Patent GB-2061024-A (GB)
Title: Reversible motor
IPC: G07F17/34
Filed: 1980-10-16
Abstract: A reversible motor has a coil arrangement arranged alongside a conductive body such as a rotatable aluminium disc. The coil arrangement is made up of three separate coils: namely an inner coil 13 and two interconnected outer coils 12, 14 on opposite sides of the inner coil. The coils 12, 13, 14 on U-shaped cores are connected to a single phase a.c. supply and the drive of the disc 6 can be reversed by reversing the connection of the inner coil relative to the two outer coils. A phase shifting capacitor is in circuit with coils 12, 14. The motor may be used for driving a reel of an entertainment machine of the fruit machine kind and may be stopped by releasing an electromagnet 9. <IMAGE>
Patent GB-2065339-A (GB)
Title: Time display apparatus
IPC: G04G9/00
Filed: 1980-10-22
Abstract: A time display device includes a memory, in which a plurality of successive time data items are memorized. With the operation of an external manual switch, two or more time data items among those memorized in the memory are read out and supplied to an optical display unit. Two or more time data items are simultaneously displayed in the optical display unit.
Patent GB-2066258-A (GB)
Title: Adducts containing hydroxyl groups from mononuclear hydantoin glycidyl compounds and non- aromatic dicarboxylic acids
IPC: C08G59/00
Filed: 1980-12-17
Abstract: An advanced addition product containing hydroxyl groups is prepared from the reaction of specific mononuclear hydantoin glycidyl compounds with non-aromatic di- carboxylic acids of 9 to 44 carbon atoms and, optionally mono-carboxylic acids of 6 to 18 carbon atoms. The above advanced addition products are heat curable with suitable curing agents for hydroxyl containing materials to afford cured compositions exhibiting excellent weathering, color stability and chalking resistance.
Patent GB-2090782-A (GB)
Title: Method and apparatus for cutting metal pieces into narrower widths
IPC: B23D19/06
Filed: 1981-01-09
Abstract: A relatively hot metal piece of a rectangular cross-section is cut into three or more narrower widths using a pair of driven knifing rolls disposed one above the other and having annular knifing members therearound. Annular knifing members 32 of wedge-shape when viewed in profile hold and bite into the metal piece as it advances through the knifing rolls thus forming V-shaped grooves in the metal. The angle theta 1 formed between that flank of the knifing member which is closer to the as-cast side of the metal piece to be cut and a perpendicular to the roll axis is greater than the angle  theta 2 formed between the opposite flank and the same perpendicular. The knifing member is asymmetrical in profile with respect to a line segment that passes through the apex of the wedge and extends perpendicular to the axis of the rolls. The flank of the knifing member which is closer to the as-cast side of the metal piece has no cutting force exerted thereon. In this way transverse thickness irregularities leading to curvature of the cut pieces in subsequent rolling operations can be maintained within acceptable limits. <IMAGE>
Patent GB-2067511-A (GB)
Title: Apparatus for varying the spacing between articles arranged in a series
IPC: B65H5/08
Filed: 1981-01-19
Abstract: The present invention relates to apparatus for varying the spacing between articles, e.g. confectionery articles, arranged in a series, e.g. in a line transverse to the direction of transport thereof. The apparatus comprises a plurality of gripping members 33, 35, one for each article 10 in the series, which are mounted on carriages 26, 30 displaceable along guide rails which also function as transport shafts 18 and are provided with cylindrical cam tracks 32 engaged by drivers associated with the carriages, rotation of the shafts 18 causing a variation in the spacing of the gripping members and therefore of articles carried thereby. The shafts 18 may be rotated through different angles and/or its inclination of the cam tracks may change along its length to achieve the variation in the spacing of the articles. <IMAGE>
Patent GB-2091817-A (GB)
Title: Well pumping apparatus
IPC: F04B47/02
Filed: 1981-01-28
Abstract: A pumping apparatus for a well in which a sucker rod (18) is connected with a downhole pump and extends upwardly through the well casing (12, 14) for connection to a fluid operated ram (46) which is operable to reciprocate the sucker rod and is mounted on the well casing so that the sucker rod remains in alignment with the well casing. The ram (46) comprises a hollow piston (68, 70) through which the sucker rod passes with a clearance and to which the sucker rod is connected at its end remote from the well casing through a load sensing device (74), a clamp (92) being fixed to the rod and abutting the top surface of the device (74) in which the sucker rod is slidable. <IMAGE>
Patent GB-2093324-A (GB)
Title: Garden cultivator
IPC: A01B33/02
Filed: 1981-02-24
Abstract: This invention relates to a lightweight power driven garden cultivator designed to perform the same task as a garden spade or fork, the cultivator having spring loaded or counter balanced telescopic anchor legs 13 which locate the equipment in a fixed position whilst cultivating and absorb the counterforces produced by the action of the power driven rotors 24. Such an arrangement allows the equipment to demand the minimum physical effort from the operator. <IMAGE>
Patent GB-2077834-A (GB)
Title: A multiple pane assembly
IPC: E06B3/663
Filed: 1981-06-16
Abstract: A multiple pane assembly (1) comprises at least two transparent glazing sheets (2,3) arranged face-to- face and separated by a spacer at their peripheries. The spacer comprises hollow metallic spacing members (4) which are welded or soldered together at the corners of the pane assembly (1). An external seal (6) of silicone is adhered to the outside periphery of the spacer and the opposed inner surfaces of the glazing sheets (2, 3). Preferably the external seal (6) extends around the rim of at least one of the glazing sheets (2, 3). <IMAGE>
Patent GB-2103426-A (GB)
Title: Transformers
Inventor: RICHARDSON ROBERT
IPC: H01F27/28
Filed: 1981-08-08
Abstract: A pulse transformer is used in a radar transmitter to transform a high current pulse at relatively low voltage into a very high voltage pulse which can be used to directly drive a magnetron oscillator. The potential of the output pulse can be of the order of 30 kV and since the transformer is required to operate at very high peak powers of the order of two megawatts, it must be very carefully designed to avoid excessive electrical losses and voltage breakdown. The core material of the transformer consists of a closely wound reel of magnetic material in the form of an elongate tape, which is mechanically fragile. The magnetic core is loosely mounted within a sealed container so that the primary and secondary windings surround it. A conductive shield is placed around the magnetic material so as to protect it from the very large electric fields generated within the transformer. This prevents the ionization of gases which could lead to the rapid deterioration of the magnetic core material.
Patent GB-2081087-A (GB)
Title: Castor with braking means
IPC: B60B33/00
Filed: 1981-02-06
Abstract: A castor body comprises integral upper and lower parts (15, 21) which can undergo limited relative vertical movement by flexing of arms (25) and (26) of the body. An axle (11) for wheels of the castor is carried in the lower body part and the upper body part has braking elements (27,28) with which the wheels engage when the upper body part is moved upwardly by a spring (24) acting between the body parts. <IMAGE>
Patent GB-2088982-A (GB)
Title: Failsafe Hydraulic Trailer Brake System
IPC: B60T17/18
Filed: 1981-11-26
Abstract: A hydraulic trailer brake system for towing vehicles, the trailer brake cylinders (11) of which are actuatable by means of a brake valve (1) provided on the tractor, is characterised in that the brake lines (7, 9) downstream and upstream of the brake line coupling (8) each contain a shut-off valve (12, 13) held in the open position, against spring biasing, by the line pressure on the side adjacent the brake line coupling (8), and the brake line pressure is always kept at a level which overcomes the spring basing of the shut-off valve (12, 13). When the coupling (8) is intact the valve (13) may also connect the line (9) with an accumulator (fig. 2, not shown). When the coupling is broken, the shut-off valve connects the accumulator to the trailer brake cylinders (11). <IMAGE>
Patent GB-2090751-A (GB)
Title: Puzzle & constructional elements
IPC: A63F9/00
Filed: 1982-01-06
Abstract: Each play element (1) is provided with at least one guide way or channel in which a resilient coupling element (2) is displaceable. The play elements may be blocks or spheres and the guideways may run irregularly across the play element's surface. The connecting elements may be plastic rods, as shown, or springs. The use of a zip fastener to join the play elements together is also disclosed. <IMAGE>
Patent GB-2091645-A (GB)
Title: Raising Sunken Objects
IPC: B63C7/02
Filed: 1982-01-13
Abstract: To raise a sunken object e.g. a boat, a plastic marker buoy fitted to the object is released upon sinking and carries to the surface a messenger line 11 which is fixed to the object by way of a chain 12. A member 14 connected to a hoisting line 13 is subsequently slid down the messenger line 11 and engages the links of the chain 12 upon tension being applied to the hoisting line 13. Details of the member 14 are shown in Figure 2. <IMAGE>
Patent GB-2094310-A (GB)
Title: Novel fluoro-prostacyclins
IPC: C07D307/935
Filed: 1982-03-10
Abstract: Compounds of the formula   <IMAGE> wherein one of the double bonds indicated by broken lines is present in 4,5 or 5,6-position, R is hydrogen or lower alkyl, R<1> is methyl, hydrogen or hydroxy; R<2> is hydrogen, methyl or fluoro; and R<21> is hydrogen, fluoro, trifluoromethyl or methyl; with the proviso that when R<21> is trifluoromethyl, R<2> is hydrogen or methyl, their pharmaceutically acceptable salts, optical antipodes or racemates are useful as anti-secretory agents, anti-hypertensives, anti-ulcerogenic agents and blood platelet aggregation inhibiting agents.
Patent GB-2098866-A (GB)
Title: Cosmetic emulsions
IPC: B01J13/00
Filed: 1982-05-07
Abstract: Cosmetic preparations providing appropriate care for different skin areas according to their specific fat, nutrient and/or moisture requirements in the form of ointments, pastes, or creams and containing one or more hydrophilic and/or lipophilic active substances, a fatty or oily phase, an aqueous phase, emulsifiers and one or more preservatives and perfume components, and comprises a very finely dispersed mixture of an oil/water emulsion containing an oil/water emulsifier and one or more preservatives and a water/oil emulsion containing a water/oil emulsifier are prepared by intimately mixing of the two emulsions under reduced pressure, optionally at a temperature of up to, say, 50 DEG C., and with control of particle size (normally in the range 1 to 50  mu m).
Patent GB-2107704-A (GB)
Title: Process for the preparation of urea
Inventor: VAN NASSAU PETRUS JOHANNES MAR
IPC: C07C239/00
Filed: 1982-09-01
Abstract: A process for the preparation of urea from ammonia and carbon dioxide at an elevated temperature and pressure having a reaction zone and a stripping zone. In the reaction zone, carbon dioxide and a portion of the ammonia are converted to ammonium carbamate, and a portion of the ammonium carbamate is converted to urea, the combined conversions resulting in a net formation of heat. In the stripping zone, a urea product stream containing unconverted ammonium carbamate is heated by heat exchange with the reaction zone to decompose a portion of ammonium carbamate. The reaction zone is maintained at a pressure of between about 125 and 250 bar, and the stripping zone is maintained at a pressure lower than the pressure in the reaction zone.
Patent GB-2113282-A (GB)
Title: Wood preservation
Inventor: ROBERTSON IAN MALCOLM
IPC: E06B7/28
Filed: 1982-11-10
Abstract: In order to be able to treat wood such as a window frame periodically with a preservative, a longitudinally extending cavity is formed within the wood into which the preservative can be introduced. In one embodiment the cavity is formed by cutting a channel in the wood and partially filling it with a filler strip so as to define an internal cavity (see Figs. 1 to 5). In another embodiment, the internal cavity is formed by a plurality of intersecting bores 120 (see Figs. 8, 9 and 10). There is described apparatus for forming the channel and apparatus for use in forming the intersecting bores.
Patent GB-2112862-A (GB)
Title: Rotary hydraulic motor
Inventor: PERCIVAL ERIC THOMAS
IPC: F04C2/08
Filed: 1983-01-04
Abstract: A gerotor-type motor comprises a toothed stator (2), a toothed rotor (4), a commutator valve (8, 9) operated by the rotor, and auxiliary ports (22) that communicate with the inter-tooth chambers (6a-g) when the latter are at maximum or substantially maximum volume to relieve the pressure of working fluid trapped therein. The auxiliary ports may be in the housing, as shown, or in the rotor at 22'. Alternatively, said ports may be in a pivoted plate next to the rotor to facilitate reversal. Fig. 4 (not shown). <IMAGE>
Patent GB-2116425-A (GB)
Title: Antimycotic preparations in a cream or ointment base
Inventor: STUTTGEN GUNTER
IPC: A61K31/17
Filed: 1983-03-18
Abstract: Antimycotic therapeutic preparations contain one or more antimycotically active substances and urea in a cream or ointment base. The antimycotic can be i.e. an antibiotic, a quinoline or imidazole derivative.
Patent GB-2140369-A (GB)
Title: Supports for belt conveyors
Inventor: LAWTHER NICHOLAS GEORGE
IPC: B65G39/12
Filed: 1983-05-24
Abstract: A belt conveyor 1 of the extendable type in which following insertion of stools 3 into the conveyor as a batch in nested relation, those stools are movable, successively, away from their nested relation under the control of linking means 58, 59 each of which is pivotally-connected between adjacent stools. The linking means each comprise at least two rigid elements 60, 61; 69, 70 themselves pivotally-connected together and movable from a folded condition to a generally in-line condition, and vice versa. Locking means prevents each stool from leaving its nested position until the linking means ahead of it has reached its generally in-line condition, or substantially so. <IMAGE>
Patent GB-2124611-A (GB)
Title: Refractory mortar compositions
Inventor: JONES CECIL M
IPC: C04B35/047
Filed: 1983-06-10
Abstract: A firebrick mortar is disclosed which is composed of 75-95 wt.% cofused chromia-magnesia spinel grain, 6-12 wt.% fine chromium oxide, 0-5 wt.% fine periclase, and 1-10 wt.% ball clay, bentonite or kaolin; sufficient organic plasticizer is added to give the mortar the desired plasticity in conjunction with an amount of water to bring the mixture to a consistency suitable for dipping or trowel, whichever is desired.
Patent GB-2124269-A (GB)
Title: Wall structure
Inventor: ABRAHAM WINFRIED
IPC: E04B1/343
Filed: 1983-06-10
Abstract: The wall structure, which is based on a modular grid and is designed in particular for sanitaryware exhibitions, consists of two different sizes of wall elements 1 and 2, a window wall 3 with a window opening, connectors 4 and edge facing strips 6. The wall elements are mounted on a base track 7 and an upper part 8 is provided as an upper door panel, and on the walls 1 to 3 there are optionally disposed decorative panels 9 and banks of fittings 10. Cable and service ducts are provided in the top of each connector and wall element. Sanitaryware bodies may be mounted on the wall elements and the latter may be provided with tiled or other decorative furnishing. <IMAGE>
Patent GB-2125015-A (GB)
Title: Lifting and guiding apparatus for e.g. a valve for discharging a silo
Inventor: WILLIAMS ALAN
IPC: B65D90/62
Filed: 1983-08-05
Abstract: An actuator for a discharge valve (18) for e.g. a silo comprises means for elevating and guiding an upper plate (21), carrying the conical valve (18), relative to a support member (17). An air bag (19) elevates plate (21) and valve (18) to permit material discharge, whilst four pairs of articulated arms (24) prevent the plate and the valve member from tilting during travel. A vibrator (28) may be mounted on plate (21), and the arms (24) may be in the form of plates whose travel is limited by strips (31) and pins (32), Fig. 3, not shown. <IMAGE>
Patent GB-2124261-A (GB)
Title: Knotters
Inventor: VANSTEELANT MARC GEORGES
IPC: A01F15/14
Filed: 1983-08-10
Abstract: A knotter (24) comprises a twine holder (63) operable to hold, during a knot-tying operation, a primary portion (20) and a secondary portion (43) of twine (21) in which a knot is to be tied, the twine holder including rotary means mounted on a first shaft (64) of the twine holder for rotation, a rotary billhook (66) attached to a second shaft (99) offset from the first shaft (64), for rotation and operable to tie the knot in the primary and secondary portions of twine, and intermittent drive means (67) disposed between the billhook shaft and the twine holder shaft and operable such that the billhook shaft intermittently drives the twine holder shaft during the knot-tying operation. <IMAGE>
Patent GB-2130511-A (GB)
Title: Method and apparatus for making foundry molds
Inventor: MUSSCHOOT ALBERT
IPC: B22C15/10
Filed: 1983-08-18
Abstract: The apparatus includes a base 10 with a flask receiving station. A vibrator means 30, 34 is employed to vibrate the foundry flask 20 disposed in the station in at least a vertical direction and there are provided a plurality of movable compacting heads 54 of substantial mass. The heads are mounted with vertical lost motion to a cross member 44 for movement into and out of the station by means of fluid cylinders 40, and also for movement permitted by the lost motion relative to each other in a generally vertical direction as the flask 20 is vibrated. The apparatus is free of any devices for applying a downward force to the compacting heads such that the sole downward force applied thereto is that supplied by gravity. <IMAGE>