baber/WOPTO huggingface dataset:
Patent GB-1335391-A (GB)
Title: Process for the manufacture of thermoplastic foam plastics mouldings by the injection moulding process
IPC: B29C44/34
Filed: 1970-12-21
Abstract: 1335391 Injection moulded foam plastics CHEMISCHE WERKE HULS AG 21 Dec 1970 [24 Dec 1969] 60468/70 Heading C3C [Also in Division B5] In an injection moulding process for foamed thermoplastic articles, the thermoplastic is heat plasticized by a rotating screw 9, comprising feed, increasing compression, and metering zones E, K and M, which intermittently rotates within a heated barrel 8 as liquid or gaseous blowing agent is injected into the plasticized thermoplastic at an inlet 7, and through a non- return valve 6, into the screw metering zone M. The blowing agent is injected in metered quantities, from a reservoir 4, by a pump 5, only during rotation of the screw 9 during plasticization. In the Fig. 1 embodiment, the injection nozzle is closed by a valve 12 as the screw retracts during rotation thereof and injection of blowing agent to deliver plasticized thermoplastic under pressure past a ring valve 10 which, after screw rotation and blowing agent injection has ceased, acts to prevent back-flow as the screw 9 advances and, after opening of a valve 12, injects the thermoplastic into a cooled mould 15 wherein it expands and wherefrom, after cooling, it is ejected after a time which is longer than that for which the screw rotates to effect plasticization. In the Fig. 2 embodiment (not shown), injection is effected by a piston injector, to which the plasticized thermoplastic containing blowing agent is delivered through a non-return valve by a non-reciprocatory screw pre-plasticizer otherwise similar to the Fig. 1 embodiment, as the piston retracts under a counter pressure which is subsequently increased to effect injection by advancement of the piston. The thermoplastic may comprise polyolefines, polystyrenes, and polyamides. Sodium carbonate and bicarbonate, with citric acid, may be employed as pore regulators, and the blowing agents at 0À1 to 10% by weight may comprise substances boiling between 20 and 70 C., e.g. pentane or hexane, or trifluorotrichloroethane, tetrafluorodichlorethane and mononuorotrichloromethane. Propane and butane may also be employed solely, or as mixtures, or admixed with liquid blowing agents. The moulded articles have an unfoamed skin and the examples relate to the moulding of polystyrene to yield (1) average pore diameter and density of 0À15 mm. and 0À5 g./cm.<SP>3</SP>; (2) average pore diameter and density of 0À2 mm. and 0À63 gm./cm.<SP>3</SP>
Patent GB-1335222-A (GB)
Title: High-speed light-responsive transform computer for a light- sensitive printing system
IPC: H04N1/48
Filed: 1970-12-21
Abstract: 1335222 Facsimile apparatus XEROX CORP 21 Dec 1970 [23 Dec 1969] 60521/70 Heading H4F [Also in Division G4] In a facsimile colour printer in which an original 11 is mounted on a rotating transparent mandrel and scanned by moving a mirror 18 along the axis thereof to produce photoelectrically red X, green Z, and blue Y video signals, and in response thereto colour separations for yellow, magenta and cyan printing inks are formed on printing plates 14, 13 and 12, e.g. photographic films, selenium plates orsilver halide plates, also mounted on the rotating mandrel, the signals X, Z and Y are transformed to signals for modulating light sources 19-21 by means of a colour correction light-sensitive transform computer. The computer effects a non-linear transformation at signal X, Z and Y so that when the printing plates are used with yellow, magenta and cyan ink the colours of the original are accurately reproduced. The transform computer comprises for each of the yellow, magenta and cyan signals three cathode-ray tubes, e.g. 35, 36 and 37, each having a photographic film 49 attached to its face-plate containing a plurality of equal areas arranged in co-ordinate form and encoded with different degrees of light transparencies. In response to the amplitudes of a different pair of the X, Y and Z colour component signals, the constant intensity light spot produced by each of the three tubes (i.e. without the films) is deflected to a co-ordinate position and its intensity is modified by the encoded light transparencies of the respective film. The encoded films are such that by summing (photo-multipliers 51, 52, 53 and adder 59) the three modulated light beams from the group of three cathode-ray tubes a voltage is obtained which represents the required voltage for producing one of the separations for a printing ink. The production of the encoded films is described, a digital computer being used to interpolate all the coefficients of the mathematical transforms from a given number of voltage transforms between the analysed red, green and blue voltages and the yellow, magenta and cyan voltages obtained by direct measurement. Each C.R.T. has a fibre optics face-plate 50, Fig. 2, having a concave inner surface adjacent the encoded film 49 on the screen 34 of the tube. Half-tone screens may be disposed over the printing plates to convert the images to halftone format.
Patent GB-1279717-A (GB)
Title: Improvements in heat sealing
IPC: B31B50/64
Filed: 1969-12-15
Abstract: 1279717 Seaming non-metallic sheet material ROBERT BOSCH HAUSGERATE GmbH 15 Dec 1969 [14 Dec 1968] 60990/69 Heading B5K [Also in Division H5] A device for welding thermoplastic film layers together comprises at least one heating wire 13 mounted on a film support bar 10b which is formed by a portion of a base 10a and by a hollow arm projecting from one side of the base and having a support leg 10d at the end of the hollow arm remote from the base, and connectible to a source of electrical current by a switch 21, and a pressure bar 27 which is articulated so as to be pivotable towards the bar 10b and which serves to press the film against the wire 13. The bar 10b is provided with a groove 10e, Fig. 4, into which is inserted an electricallyconductive V-strip 11 the bridge of which carries a polytetrafluoroethylene strip 12 carrying the wire 13 which is covered with a coating 32 of heat-resistant and unwettable plastics material. One end of the wire 13 is secured to a member (14), Fig. 3 (not shown), longitudinally displaceable by a rotary knob 16, Fig. 1, to adjust the tension of the wire 13. The other end of the wire 13 is connected to a switch lever 17 urged, by a spring 22, away from the switch 21 so that a contact 20 thereof is open. The wire 13 is located in the secondary circuit of a transformer 19. To initiate a welding operation, a push button 26 is depressed to push a tongue 25 into contact with contact 24 to connect the primary side of the transformer 19 to a mains supply (not shown). The wire 13 is heated and expands to pivot the lever 17 away from the switch 21 so that a pin 18 on the lever 17 releases the contact 20 to open the switch 21 and interrupt the primary circuit of the transformer 19. The bar 27 is hinged to a cover plate 10h and is provided with a stamp 33 to actuate the push button 26 when the bar 27 is depressed. The pivoting of the bar 27 away from the bar 10b is limited by a transparent strip 28, Fig. 5, clamped into a slot 27d. A lamp 29 mounted below the strip 28 is connected to the circuit of the wire 13 to indicate when current is supplied thereto. A rubber strip 31 having a resilient pressure surface 31a to co-operate with the wire 13 is mounted on the bar 27. A compression spring 34 biases the bar 27 into a raised position in which the strip 28 abuts a rib 10k of the plate 10h.
Patent GB-1329737-A (GB)
Title: Suspension devices for articles such as signs
IPC: A47G1/18
Filed: 1970-12-23
Abstract: 1329737 Suspension &c devices A A HULTBERG and N E WESTLUND 23 Dec 1970 [23 Dec 1969] 61232/70 Heading E2A A device for suspending and fixing the position of light-weight articles, such as mobiles, at a desired level below a suspension attachment point, comprises a suspension wire, having attachment means 4, such as hooks, at each end thereof and at least one intermediate portion 2 between the attachment means. The portion 2 is in the form of a tightly wound helical coil of metal wire adapted to be extended to a desired length up to an amount equal to the difference between the length of the wire of the intermediate portion and the coil length of that portion and to retain the extended length without springing back, whereby a lightweight article may be suspended at the extended length from the attachment point; the attachment means at at least one end of the wire has a curved portion 3a provided with ridges 5 extending transversely of the suspension wire with turns of the wire adjacent the respective end or ends thereof engaged on the ridges. There may be a number of spaced apart coils forming the portion 2, and the coil or coils may be circular, triangular or square in cross-section.
Patent GB-2024702-A (GB)
Title: Blown film process
IPC: B29C48/92
Filed: 1978-07-07
Abstract: A blown film process in which optimum quality film is produced by automatically controlling either the frost line position on the the tubular on blown film or the temperature in an area between the frost line and the extrusion die head. A sensing device (30) monitors the temperature in a control area between a frost line (28) and an extrusion die head (14). The signal produced is fed to a controller (32) and to a temperature reading instrument (36). The controller (32) is set to continually compare the signal received from the sensing device (30) with a pre-determined control temperature for the control area. If there is any difference between these temperatures the controller (32) operates a butterfly valve (46) which either increases or decreases the rate of flow of air from a compressor (50) to a cooling ring (52), thereby correcting the temperature in the control area to the desired control temperature at which optimum quality film is produced. <IMAGE>
Patent GB-2024759-A (GB)
Title: Mounting hoists or winches
IPC: B66D1/36
Filed: 1978-07-11
Abstract: A hoist or winch comprising a base 12, a drum housing 16 pivotally mounted on the base and containing a drum 18, a length of flat tape 20, secured at one end to the drum, the width of the tape being slightly less than the width of the drum, and means for rotating the drum to wind the tape onto the drum. <IMAGE>
Patent GB-2025568-A (GB)
Title: Toothed gearing
IPC: F16H19/00
Filed: 1978-07-12
Abstract: A variable ratio gear assembly particularly suitable for steering gears and having a helically toothed wheel or pinion (30) which is axially rotatable and in toothed driving engagement with a further toothed member such as a rack bar (27) or a further pinion. One of the toothed members, usually the wheel (30), is axially displaceable relative to the other toothed member, (the rack bar 27) while toothed driving engagement is maintained. Cam means such as cam surfaces (37 and 38) engaging with cam followers (42 and 43) on a roller (39) operatively associated with the wheel (30) is responsive to rotation of the wheel (30) to cause axial displacement of the wheel (30) relative to the rack bar (27) during rotation of the wheel (30) and thereby a variation in the gear ratio which is transmitted through the assembly. The axially displaceable wheel can be driven or an idler wheel. <IMAGE>
Patent GB-2025593-A (GB)
Title: Cooling box
IPC: F25D3/00
Filed: 1978-07-28
Abstract: A box for maintaining beverage in a cool condition comprises an outer casing (2) around an insert (3) which has recesses (4) holding sleeves containing a cooling mixture and which, in use, closely embrace beverage containers within the recesses. The sleeves may be formed from two symmetrical half sleeves. In an alternative construction, the sleeves are omitted and the cooling mixture is contained in the insert to surround the recesses. <IMAGE>
Patent GB-2014630-A (GB)
Title: Peat-Cutting Apparatus
IPC: E21C49/00
Filed: 1978-08-11
Abstract: A digging apparatus to be fitted to a land vehicle, the apparatus comprising support means in the form of a framework 12 comprising a beam 13 having a mounting plate 14 at the bottom of one side and a support 15 spaced parallel from said beam by upper and lower stays 16, 17, the lower stay extending between a block 18 extending outwardly from the bottom of the opposed side of the beam 13, and a plate 19 secured to the bottom of the support, the support means being for anchorage to the vehicle to project laterally therefrom and mounting adjacent to the support and remote from the vehicle for guided movement in the direction of its length a bar 10 then upright or upwardly inclined towards the vehicle and having secured thereto at or adjacent to its lower end and through an aperture in said bottom plate 19 through which the bar is guided, two knives 11A, 11B at right angles to the bar axis and mutually intersecting at right angles with the cutting edges thereof facing downwards, and means 25, 20, 21 for moving said bar downwards and back upwards in the direction of its length. <IMAGE>
Patent GB-2029379-A (GB)
Title: Baby's Feeding Bottle
IPC: B65D47/06
Filed: 1978-08-31
Abstract: An infant's trainer cup comprises a feeding bottle 1 and an internally threaded lid 2 having a spout 8 and an internal sealing flange 9. <IMAGE>
Patent GB-2039255-A (GB)
Title: Convertable trailers
IPC: B60P3/10
Filed: 1978-09-19
Abstract: A trailer is convertible between a boat trailer and a box trailer by the removal and addition of appropriate parts. <IMAGE>
Patent GB-2030212-A (GB)
Title: Zip fastener slider
IPC: A44B19/28
Filed: 1978-09-23
Abstract: A zip has a slider comprising upper and lower separate elements (1 and 2) detachably connected together by a pillar having two portions (5 and 6), one connected to each of the elements (1 and 2). A screw (9) extends through the pillar portions to effect the connection. Such a slider is easily replaceable upon failure thereof. <IMAGE>
Patent GB-2005786-A (GB)
Title: Container for fluid
IPC: F16K1/14
Filed: 1978-09-28
Abstract: A container (10) for fluid includes a valve assembly (148) and a coupler assembly (20) therefor. The valve assembly (148) on the container is received by a neck (124), a seal (122) being provided. To avoid damage to the seal (122) location of the valve assembly is effected without substantial rotation between the parts, e.g. by means of a retaining ring (37) in a groove (36). The valve assembly (148) has a syphon tube (128) extending therefrom, and includes a first valve member (144) co-operating with a first valve seat (146). A second valve member (74) co-operates with a second valve seat (78) and is biased by a spring (70). The first valve member (144) is carried by the top of the syphon tube (128) and is biased by a spring (136) acting on the tube. The coupler assembly (20) includes a probe (88) movable by a handle (104) so as to open the valve assembly when the coupler is engaged therewith by means of wedge surface (82) cooperating with a pair of lugs (56). A spring loaded locking pin (110) which cooperates with lugs 56, is provided for preventing engagement or disengagement of the coupler assembly (20) when the probe (88) is in a position to open the valve assembly. <IMAGE>
Patent GB-2030504-A (GB)
Title: Fibre-reinforced expanded plastics material
IPC: B65D65/38
Filed: 1978-09-30
Abstract: Expanded plastics material, e.g. polyurethane foam, is reinforced with fibrous material for use in packaging.
Patent GB-2005222-A (GB)
Title: Twin slewing cranes
IPC: B63B27/10
Filed: 1978-10-02
Abstract: A shipboard crane includes two jibs (50), (51) consisting of respective (DE) inner arms (50a), (51a) and respective outer arms (50b), (51b) the inner arms being slewably mounted, by way of a four track, annular, ball or roller bearing, on a common supporting column (42) fixed to the hull and the outer arms being slewably mounted at their inner ends on the outer ends of the inner arms and being provided at their outer ends with lifting tackle. The inner arms are mounted on the column so as to be slewable about a common vertical axis (47) and, in double working of the jibs, the locations of action of the common load on the jibs are at equal radii from the axis and at an equal height. <IMAGE>
Patent GB-2005491-A (GB)
Title: Improvements in or relating to bushes or grommets
IPC: H02G3/06
Filed: 1978-10-11
Abstract: A bush for providing a protected passage for one or more electrical cables 25 through an aperture in a wall comprises hingedly connected body portions 10,11 formed with parallel troughs 13,14,20,21 extending longitudinally from one end to the other end, the hinge connection 12 permitting the body portions 10,11 to be assembled together to define laterally enclosed passageways or separated to admit of lateral introduction of cables. <IMAGE>
Patent GB-2032086-A (GB)
Title: Film-type rotary gas/liquid mass-and-heat exchange column
IPC: B01D47/16
Filed: 1978-10-23
Abstract: The column comprises a shell 1 which accommodates a vertical shaft 7 carrying contact stages 9 formed by bands 10, 11, 12 curved into spirals diverging from the shaft 7 and flanged towards the shaft 7 at their edges 13. The bands 10, 11, 12 have longitudinal beads 21 bulging from the concave surfaces of the bands so as to define a number of channels 22, 23 adjacent in height. An annular trough 17 collects liquid discharged centrifugally outwardly from each contact stage, the collected liquid being transferred to the next subjacent stage by means of a downflow pipe 18. <IMAGE>
Patent GB-2032937-A (GB)
Title: Photosensitive Resin Compositions Having Increased Viscosity
IPC: G03F7/032
Filed: 1978-11-06
Abstract: Photosensitive compositions useful for producing high quality relief printing plates comprise at least one unsaturated polyester, at least one ethylenically unsaturated, addition polymerisable monomer, at least one photosensitive initiator and a poly(hydroxyl ether) derived from a diphenol and an epihalohydrin, such as bisphenol A-epichlorohydrin resin. The poly(hydroxyl ether) increases the viscosity of the photosensitive composition such that the composition is less likely to flow during the plate-making process, thereby avoiding undesirable blemishes on the finished plate.
Patent GB-2029344-A (GB)
Title: Washing Automotive Vehicles
IPC: B60S3/06
Filed: 1978-11-28
Abstract: As the roof brush 5 is moved, its instantaneous x- and y-positions are compared with stored threshold values. In order to wash a larger (e.g. commercial vehicle 14, 15 or 17 more vigorously than a car 10, the brush speed or force is increased when the brush exceeds a first y- threshold value Y1 (chosen to be higher than any expected car bonnet) but does not exceed a first x-threshold value X1 (chosen according to the steepest expected slope of a commercial vehicle body-front). In order to avoid brush-damage to the connecting hoses 18 between a tractor cab 16 and a trailer 17 the brush, on exceeding a second, higher y-threshold value Y2 is prevented from descending below a chosen safe level YN1 until a second x-threshold value X2 (chosen to clear the greatest expected cab-to-trailer gap) has been exceeded. Other refinements and side brushes are disclosed. <IMAGE>
Patent GB-2035676-A (GB)
Title: Frequency agile magnetron arrangement
IPC: H01J25/50
Filed: 1978-11-30
Abstract: At least two magnetron oscillators 1 and 2 are coupled into a common output waveguide 5 with phasing such as to minimise frequency pulling effects, the two oscillators being arranged to utilise a magnetic field provided by a common permanent magnet, being capable of operating at different frequencies, and being capable of being pulsed separately. In a preferred example each oscillator is itself a multi-pactor discharge tuned magnetron. <IMAGE>
Patent GB-2015927-A (GB)
Title: Method and Apparatus for Applying Adhesive in the Binding of Books
IPC: B42B5/10
Filed: 1979-01-29
Abstract: In binding a body of leaves 10 to produce a bound book band of hot melt adhesive is applied along an adhesive- receiving area on the spine of a book cover 14 and/or on the spine of the body by projecting the adhesive as a thin flat transverse sheet from a flat fan orifice past which the cover or body is moving. The direction of relative movement is parallel to the spine, with the orifice extending transversely to the direction of movement. The adhesive, which is desirably applied in foam condition, provides an adhesive band that extends parallel to the direction of movement. This method of binding can be used to bind both hardbacked and paperbacked books.   <IMAGE>
Patent GB-2016527-A (GB)
Title: Preparation of selective surfaces for high temperature solar energy collectors
IPC: F24J2/48
Filed: 1979-01-31
Abstract: Previous attempts to prepare selective surfaces suitable for use in high temperature solar energy collectors have included chemical vapour deposition of metals on to substrates. Such coated substrates have not been successful due to impurities in the coatings and to agglomeration due to auto-diffusion. These problems are alleviated by metal vapour thermal deposition of a layer of metal or alloy whose crystalline size is such that the surface contains holes whose mean diameter is of the same order of size as the wavelength band of visible light. The characteristics of the coating may be varied by varying the gaseous atmosphere e.g. air, oxygen, nitrogen, argon, gaseous hydrocarbon in which the deposition is performed and the speed e.g. 1 to 10 microns per minute and temperature e.g. 1500 DEG C to 2000 DEG C of vaporisation and deposition. Preferably the vaporised metal is kept out of contact with the substrate for a period of time after the metal has been melted, to avoid impurities which adversely affect the coating.
Patent GB-2018272-A (GB)
Title: Self-bonding silicone rubber compositions
IPC: C08L83/04
Filed: 1979-02-14
Abstract: A self-bonding silicone rubber composition comprising a vinyl-terminated polysiloxane polymer, a hydride siloxane cross-linking agent, a platinum catalyst and as the self- bonding additive, the partial hydrolysis product of an aliphatically unsaturated hydrolyzable alkoxy silane.
Patent GB-2042693-A (GB)
Title: Sporting Cartridges
IPC: F42B7/12
Filed: 1979-02-23
Abstract: A sporting cartridge comprises a case and a separately formed closure cap fitting over the case at the end of the case remote from the initiator assembly. The tightness of the cap fitting in relation to the strength of the cap is such that the force needed to break the cap by firing the cartridge is less than the force needed to move the cap off the case. The cap may be retained on the case by a snap fit, e.g. an interfitting rib and groove, or by an interference fit, e.g. tapered mating parts.
Patent GB-2043135-A (GB)
Title: Ballast packing apparatus
IPC: E01B27/16
Filed: 1979-03-06
Abstract: The apparatus is mounted on a railway vehicle and comprises a carriage (37) vertically movable in guides (35a etc) and carrying tines (40, 41) which are movable towards each by means of a hydraulic ram (50) for packing ballast about a railway sleeper. The carriage is lowerable by a hydraulic ram (75) acting on a parallelogrammic linkage (71) arranged to provide a large initial downward movement of the carriage for a given movement of the ram (75) and a small final downward movement of the carriage for an equivalent movement of the ram (75) so that there is rapid lowering of the carriage at low force followed by slow lowering of the carriage at high force. <IMAGE>
Patent GB-2018250-A (GB)
Title: Bicycloheptane derivatives
IPC: C07C405/00
Filed: 1979-04-06
Abstract: Compounds of the general formula:-   <IMAGE> wherein R<1> represents a straight- or branched-chain alkyl group containing from 1 to 6 carbon atoms or a phenoxy or benzyl group, and pharmaceutically acceptable salts and esters thereof, possess pharmacological properties of use in the fields of mammalian reproduction and cardiovascular disease.