baber/WOPTO huggingface dataset:
Patent GB-1214172-A (GB)
Title: Improvements relating to image reproducing apparatus
Inventor: PUGSLEY PETER CHARLES
IPC: G03F3/08
Filed: 1968-07-22
Abstract: 1,214,172. Colour reproduction. CROSFIELD ELECTRONICS Ltd. 22 July, 1969 [22 July, 1968], No. 34792/68. Heading H4F. In a colour reproduction system the black printer signal is derived from the colour separation signals in such a way that it constitutes a larger proportion of the "effective black level" in neutral areas (i.e. where the colour signals are nearly equal) than in brightly coloured areas. The "effective black level" is the maximum amount of black that could be used to replace overprinting of all three colours and is equal to the smallest colour signal. The processing is achieved by a circuit comprising means for selecting the maximum and minimum colour signals and a differential operational amplifier the maximum signal being connected to the inverting input via a resistor, the minimum signal being connected directly to the non- inverting input and a feedback resistor connected between the output and the inverting input. This generates a function of the form B = S-xL/1-x where B is the black printer signal, S is the smallest colour signal, L is the largest colour signal, and x is a selectivity factor. For neutral areas the colour signals are equal and the black signal is equal to the colour signals, while for coloured areas the black signal is somewhat smaller than the smallest colour signal S, unless x=O. As x is increased the black signal is decreased for coloured areas but remains the same for neutral areas. As shown, positive going yellow, magenta and cyan colour signals y<SP>1</SP>, m<SP>1</SP>, c<SP>1</SP> are applied to diode circuits 10 and 11 which select the maximum and minimum signals respectively. The minimum signal is fed to the non-inverting input of a differential amplifier 16 while the maximum signal is fed via a variable resistor 20 to the inverting input of the amplifier. A feedback resistor 22 is connected between the output and the inverting input of the amplifier. Buffers 14 and 15 are provided for the maximum and minimum signals and potential dividers 17a-23, 17b-24 and 25-26 are included in the maximum and minimum signal and feedback paths to facilitate the connection of gain and offset controls 28, 29. The output voltage is of the form specified, x being determined by x/1x = R<SP>22</SP>/R eff  where R 22  is the resistance of the feedback resistor 22 and R eff  is the sum of the resistance of variable resistor 20 and the effective source resistance of the maximum signal generator at point 18. The selectivity factor x can therefore be readily altered by variation of resistor 20 without altering the overall scale factor of the black signal. The circuit may be used for negative going colour signals by reversing the polarities of the diodes in the maximum and minimum signal selection circuits.
Patent GB-1471360-A (GB)
Title: Adjustable chiropractic device
IPC: A61H1/00
Filed: 1974-08-07
Abstract: 1471360 Device for treating the human back T MURAMATSU 7 Aug 1974 [16 Aug 1973] 34818/74 Heading A5R A device for treating the human back, comprises a pair of elongate spaced pressing members 22 each having a semi circular crosssection upper surface 24 having a curved top end 24a for pressing said back, and a foot section 23 which is slidable in a longitudinal groove 21 in an elongate bed plate 20, the curved top ends being juxtaposed and members 22 being fixable with a desired spacing therebetween. The members 22 may be fixed in position by a plate 27 positioned therebetween which engages a vertical piece 26 formed on an extension 23a of each foot section when screwed down, the spacing between members 22 being limited by the engagement of each vertical piece with a respective downwardly extending stop 28 on said plate. The upper surface of each pressing member may slope down towards its respective curved end. In an alternative embodiment, the walls of the groove have teeth (60) Fig. 6 (not shown), engageable with complementary teeth (62) on each pressing member, each pressing member having flexible, vertical plates (64) on its underside, said plates being frictionally engageable with at least one row of projections (61) in the groove.
Patent GB-1535533-A (GB)
Title: Yarn or woven fabric dyeing apparatus
IPC: D06B3/12
Filed: 1977-04-05
Abstract: 1535533 Dyeing yarns or fabrics R ASHWORTH 5 April 1977 [21 Aug 1976] 34914/76 Heading D1L In the dyeing of yarns or fabrics by passage through a series of liquid treatment baths 24, the textile is conveyed therethrough by rollers 24' mounted on frames which are vertically movable so that in the event of a malfunction the frame can be raised to remove the textiles from the baths and terminate treatment. The textiles are fed to and from the baths via nip rolls 22 and a compensator roll 23 which controls the roll speed and textile tension. The textile is also passed through the atmosphere at 28 between each bath.
Patent GB-1430538-A (GB)
Title: Convertible sofa-bed furniture
IPC: A47C17/22
Filed: 1974-08-08
Abstract: 1430538 Convertible sofa/bed A METAYER 8 Aug 1974 [4 Oct 1973] 34969/74 Heading A4J In a sofa/bed combination the head end 18 is folded to lie between a central portion 19 and an over-lying parallel foot end 21, the portions 19 and 21 being connected by vertical intermediate portion 20. The assembly 18-21 is movable bodily in its folded condition from the seat portion of the sofa to the position shown in Fig. 1 by links 7, 9, 11, 13, 15, the link 26 causing extension of a supporting foot 27 during this motion. The bed surface is then unfolded by anti-clockwise rotation of foot portion 21 with respect to portion 20. Thereafter stud 49 engages the dog leg of slat 50 to constrain link 37 to slide along slot 39 as portion 20 is rotated anti-clockwise with respect to portion 19. During this motion link 35 rotates link 33 to cause clockwise rotation of head portion 18 until it is arrested by stop 31 on link 30. A mattress may be accommodated between portions 18-21 when in the folded position.
Patent GB-1516632-A (GB)
Title: Electric storage batteries
IPC: H01M50/176
Filed: 1975-09-30
Abstract: 1516632 Introducing electrode posts through battery lids LUCAS BATTERIES Ltd 30 Sept 1975 [8 Aug 1974] 34974/74 Heading H1B An electrode post 19 passes through a spigot 24 in a battery lid 22 of, e.g. polypropylene, and the space between the post and spigot is sealed by injecting thermoplastic material. To key the plastics material, the post has splines and annular grooves, and the inside of the spigot has splines.
Patent GB-1123602-A (GB)
Title: Production of refractory bodies
IPC: C04B35/591
Filed: 1965-08-16
Abstract: Articles containing silicon nitride and/or silicon oxynitride are produced by forming a mix comprising particulate silicon carbide, and particulate silica or clay, forming into the desired shape and heating at 1300 DEG  C. to 1700 DEG  C. in an atmosphere of nitrogen. If a clay is used aluminium nitride is also formed. Coarser particles than 200 U.S mesh may be used, but do not enter into the reaction. Carbon may replace part of the silicon carbide, and catlysts, e.g. calcium fluoride, for silicon nitride production may be employed. Dextrin may be added to the mix to act as a temporary bond.
Patent GB-507606-A (GB)
Title: Improvements in or relating to carbon copying appliances for typewriting and like machines
IPC: B41J17/00
Filed: 1937-12-17
Abstract: 507,606. Carbon - sheet holders. FANFOLD, Ltd. (United Autographic Register Co.) Dec. 17, 1937, No. 35051. [Class 16] [Also in Group XVI] In a carbon-sheet pack of the kind comprising a backing-sheet provided with carbon-sheet attaching-means which are secured to the backing-sheet only on the side thereof which is opposite to that upon which the carbon sheets are arranged, the attaching-means are so arranged that they do not project beyond the widest stationery that the pack will accommodate. In the pack shown in Figs. 2 and 3, carbon sheets 18 are connected to a backing- sheet 10 by means of paper strips 20 which extend freely across the back of the backing- sheet and are bent over at the ends and secured, preferably by adhesive, to the front edges of the backing-sheet. The bent-over ends of the strips may be additionally secured by pieces 22 of gummed paper. The strips are preferably arranged in stepped formation. The rear ends of the carbon sheets are folded around the strips or are gummed thereto. The backing-sheet is-provided on the rear edge with a wire bail 24 having the ends 26 arranged in a fold which is secured by staples 30 and a gummed strip 28. The paper webs 16 are passed through the bail and between the carbon papers, and the assembly is fed around the platen of a typewriter. To prevent the backing-sheet from catching in the weakened lines 14 in the paper webs, the front edge is formed with a V-notch 12. To prevent the carbon sheets from being drawn forwards with the paper webs when the latter are advanced after the typing of a set of forms, the backing-sheet is provided with a friction-surface which binds on the platen. For this purpose, the backing sheet may be composed of or faced with fine sand-paper, or may be faced with sheet rubber. Alternatively, for preventing movement of the carbon sheets, the bail 24 may co-operate with stops on the platen-carriage. When the stops are employed, the backing-sheet may consist of tracing cloth. The bail 24 may be replaced by a rectangular frame 56, Fig. 7, which engages a fold in a backing-sheet and is secured by clips 60. Alternative forms of bail consist of a rectangular frame mounted in a window in the backing-sheet, or of a bar arranged at the rear of the backing-sheet and having bent-over ends which are secured by clips to the front of the backing-sheet.
Patent GB-616351-A (GB)
Title: Improvements in crystallization apparatus
IPC: B01D9/00
Filed: 1945-12-28
Abstract: <PICT:0616351/III/1> In crystallizers of the type operating with a free level of liquid in the crystallization vessel 9, and in which a solution circulated through the vessel is supersaturated in cooler 3 and then forced downwards through a pipe 5 and upwards through the body of crystals 1, the arrangement is such that the circulation channel connecting the space above the body of crystals with the space below the crystals comprises a syphonic conduit provided with a cock 11 for admitting air to cause interruption of the flow of liquid.  When the pump 2 is stopped also, the surface of the liquid is lowered to expose the ends of the cooling tubes for cleaning purposes, and if air is also admitted at 12, the conduit may be emptied through cock 7.  In a modification, Fig. 3 (not shown), two coolers may be used alternately or together.  The Specification as open to inspection under Sect. 91 comprises also a crystallizer having two or more coolers at the same level as the crystallization vessel, Figs. 4, 5 (Cancelled) (not shown). This subject-matter does not appear in the Specification as accepted.
Patent GB-1011249-A (GB)
Title: Improvements in or relating to the production of multi-coloured plastic articles
IPC: B29C45/53
Filed: 1962-09-14
Abstract: 1,011,249. Injection moulding machines. D. TONG. Dec. 13, 1963 [Sept. 14, 1962], No. 35147/62. Heading B5A. Apparatus for injection moulding multicoloured articles, e.g. artificial flowers, comprises at least two injection cylinders 12, 14 (Fig. 2) connected to a single nozzle 16, injection pistons 20, 22 carried by a cylinder block 32, at least one of the pistons working in a cylinder (28, 30) in the block 32, and the cylinder block 32 and pistons 20, 22 are movable as a unit until hydraulic fluid in a cylinder (28 or 30) is released, whereupon relative movement takes place between the piston and block. In the example shown in Figs. 1 and 2, injection is effected by admitting fluid to the left-hand end of a master cylinder 6 to move a master piston 8, connecting rod 34 and cylinder block 32 to the right. Due to the pressure of fluid in cylinders 28, 30 behind piston heads 24, 26, the pistons 20, 22 are also moved to the right. After a predetermined movement a ball valve 48 or 50 is opened to allow fluid to flow back from one of the cylinders (say 30) through a passage 39 to the master cylinder 6. Injection from cylinder 14 then ceases while that from cylinder 12 continues for so long as its ball valve 48 remains closed. Opening of the ball valves 48, 50 is effected by push rods 60 acted on by pivoted levers 64 each carrying a roller 68 adapted to engage abutments (as 70) (see Fig. 6, not shown). - By adjustment of the abutments the injection of the differently coloured plastics can be started and stopped as desired. Plastic material is supplied from a two-compartment hopper 18 (Fig. 10, not shown) by means of feed chambers 80 connected by a threaded rod 90 to the cylinder block 32 for movement therewith. The size of the chambers is adjustable by a screw 84 and movable wall 82. Figure 11 shows the nozzle 16 having a main passage 100 with a non- return ball valve 102 connected to cylinder 12. Cylinder 14 is connected by three passages 106 to a circumferential passage 110 which communicates with grooves 112 formed between nozzle pieces 104, 114. In a modification (Figs. 16 ... 21, not shown) one injection piston is rigidly connected to the cylinder block and release of hydraulic fluid from the cylinder of the other piston takes place when the pressure in this cylinder has built up to a valve sufficient to overcome the effect of an adjustable spring.
Patent GB-1008871-A (GB)
Title: Improvements in cathodic protection electrode structures
Inventor: MORGAN JOHN HAROLD
IPC: C23F13/02
Filed: 1961-09-29
Abstract: <PICT:1008871/C6-C7/1> <PICT:1008871/C6-C7/2> An anode structure to which a current is applied for the corrosion protection of ships' hulls, propellers &c., consists of a strip-like electrode 1, Fig. 2, embedded in a plastic insulating member comprising a rib 2 and plate 3 which extends beyond the perimeter of the electrode, and is secured to the side of the ship's hull preferably by a layer of mastic and securing bolts. The electrode has holes 6. Fig. 1, through which the polyester, epoxy resin or other plastic admixed with fibre glass, is forced in moulding the structure, and then forms anchoring means for the electrode.  The rib 2 also acts as ship's fender.  The electrode is made of lead or platinized titanium.  The substantial area of the insulating plate 3 prevents high current density effect in the region of the electrode.
Patent GB-441161-A (GB)
Title: Improvements in and relating to high-voltage apparatus such as a current transformerinsulated by compressed gas
IPC: H01F38/30
Filed: 1934-12-07
Abstract: 441,161. Insulation. BRITISH THOMSON - HOUSTON CO., Ltd., Crown House, Aldwych, London. Dec. 7, 1934, No. 35211. Convention date, Dec. 7, 1933. [Class 36] In a high voltage apparatus such as a current transformer insulated by compressed gas and in which the conductor elements surrounded by the gas are wrapped with impreg nated insulation, to prevent draining of the impregnating compound from the impreg nated insulation this is enveloped in a covering of elastic and oil-resisting insulating. material, such as polymerides of acrylic acid, or its deriva. tives, or homologues, or a mixture of these substances. The elastic and oil resisting material may be wound in tape form over the impregnated insulation and may be protected from the gas by a wrapping of paper, silk, cambric, or linen. The Figure shows a current transformer, the core 1 and high tension winding 2 of which are enclosed in a chamber 3, comprising a steel casing 4 and insulator 5, filled with gas under pressure. The winding 2, and if desired the core 1 also, is insulated by wrappings of impregnated paper over which is applied a wrapping of oil resisting elastic insulation. The insulator 5 comprises a hand paper pressure resisting cylinder surrounded by a porcelain shell.
Patent GB-605592-A (GB)
Title: Improvements in acceleration and deceleration testing instruments for motor and like vehicles
IPC: G01P15/04
Filed: 1945-12-31
Abstract: 605,592. Accelerometers. RECORD ELECTRICAL CO., Ltd., and RECORD, J. L. R. Dec. 31, 1945, No. 35222. [Class 106 (iii)] An accelerometer of the type comprising a pendulous magnet co-operating with an armature which moves therewith and operates indicating means, is characterised by the provision of means of the eddy current type for damping the motion of the magnet. On a spindle b is suspended a U-shaped magnet a and an armature c having lugs c<2> for engagement with the magnet during its operative movement and having a toothed quadrant d meshing with a pinion e on a shaft f which carries, by means of a spider h, a graduated drum g whose indications are observable through a window i. A ratchet m on the spindle f is engaged by a pawl n which can be disengaged by depression of a pushbutton r (not shown). A T-sectioned conductor (e.g. copper) of arcuate form is located between the legs of the magnet a so that eddy currents set up by the swinging magnet damp the motion of the latter.
Patent GB-1182900-A (GB)
Title: Condenser System for Steam Turbine Power Plants.
Inventor: HELLER LASZLO
IPC: F01K9/00
Filed: 1968-07-24
Abstract: 1,182,900. Condenser system for steam power plants. TRANSELEKTRO MAGYAR VILLAMOSSAGI KULKERESKEDELMI VALLALAT. 24 July, 1968 [24 Oct., 1967], No. 35288/68. Heading B1B. Steam from double-flow turbine 1 is condensed by direct contact with jets of cooling water in two mixing condensers 2, 3, arranged at different levels, the cooling water first flowing through the upper condenser 2, and then through pipe 4 into the lower condenser 3 by hydrostatic pressure difference. The water holding-capacity of condenser 3 is greater than that of condenser 2; and the cross-sectional area of the downflow conduit 2a of condenser 2 is less 'than the cross-sectional area of condenser 3. The water-level in condenser 3 is maintained constant by control device 17 and valves 12, 13, which are connected to water receptacle 14 at atmospheric pressure. The water-level in the downflow conduit 2a of condenser 2 fluctuates according to the operating conditions. Some of the water withdrawn from condenser 3 by pump(s) 5 is discharged from the system through pipe 16, and the remainder is pumped through heat-transmission elements 6 ... 9; where it is cooled by atmospheric air, before being recirculated to condenser 2.
Patent GB-956577-A (GB)
Title: A snap-action electric switch device
IPC: H01H61/06
Filed: 1960-10-14
Abstract: 956,577. Thermal switches. J. W. WELSH. Oct. 14, 1960 [Oct. 20, 1959], No. 35291/60. Heading H2B. A snap-action thermal flasher has a thermallyexpansible ribbon attached to a snap-acting vane which is normally curved so as to have a convex front face and concave back face, the ribbon flattening the vane at its sides and buckling it about a different axis, and the ribbon carrying a contact co-operating with a fixed contact. As shown, the vane 40 is initially curved along its longitudinal axis, Fig. 8, but is deformed therefrom to bend about a central lateral axis, Fig. 9, by the ribbon 50 which is fixed to the ends of the vane. The latter is mounted slightly below its horizontal centre line on a leg 28 of a terminal 25 and the contact 55 on the ribbon co-operates with a contact 56 on a terminal 26. The contact 55 is slightly below the centre line of the ribbon so as to tilt and wipe on contact 56. As the ribbon expands on heating, a depression 45 at the centre of the vane flattens out, and the vane eventually snaps over to its initiallycurved state, thereby opening the contacts, which reclose when the ribbon recools. The comers 53, 54 of the vane are bent rearwardly to assist in holding the ribbon.
Patent GB-175829-A (GB)
Title: Improvements in or relating to silencers for engine exhausts
IPC: F01B31/16
Filed: 1920-12-15
Abstract: 175,829. Wade, H., (Fort Dearborn Manufacturing Co.). Dec. 15, 1920. Exhaust-silencers.-The silencer consists of a spiral spring 34 supported by a cruciform spider 33 with its edges engaging the spring and entering in the interstices between successive coils. The spider is formed on a socket which fits over the exhaust pipe; or as shown the socket is mounted' on a bracket 27 and can be swung sideways to act as a cut-out. In the modification where the socket fits over the exhaust pipe the end of the spring is 'connected to a lever which can be used to open out the spiral and allow free exhaust. The end of the spiral is closed by a disc 18, which may be hemispherical, thereby forcing the gases to pass through the interstices of the spring.
Patent GB-1138086-A (GB)
Title: Means for contacting programming cards
IPC: H01H43/24
Filed: 1966-08-08
Abstract: 1,138,086. Interrupters. O. RAMSTETTER, [trading as OTTO RAMSTETTER FABRIK ELEKTROTECHNISCHER APPARATE]. 8 Aug., 1966 [6 Aug., 1965], No. 35367/66. Heading H1N. A programme switch comprises a stationary carrier having a plurality of tracks in the form of gapped ribs overwhich travel feelers which are moved thereby to actuate respective contact devices. The feelers 5 (15, 22) are carried by endless conveyers 7 and move in the space between the carrier 1 and the contact devices which, as shown in Fig. 2, comprise a plurality of spring-loaded wires 11 engageable with fixed contact strips 10. Alternatively, the feelers (15) may close spring contact pairs (17) via activators (16), carried by levers (19, 20), Figs. 3, 4 (not shown), or the feelers (22) may carry contacts (23) arranged to bridge pairs of fixed contacts (24, 25), Fig. 5 (not shown). The feelers may consist of spring-urged plungers.