baber/WOPTO huggingface dataset:
Patent GB-1002306-A (GB)
Title: Improvements in or relating to back-lighted display panels
Inventor: LOCKE JOHN DAVID IVOR
IPC: G09B1/00
Filed: 1961-07-06
Abstract: 1,002,306. Educational appliances. COMMUNICATIONS PATENTS Ltd. July 6, 1962 [July 6, 1961; Dec. 29, 1961], Nos. 24424/61 and 46715/61. Heading G5G. [Also in Division F4] A back-lighted display panel comprises a transparent or translucent screen 3, Fig. 1, to which is bonded one side of at least one openended cellular grid 5 and at least one electric lamp-holder 50, Fig. 3, having at least two retaining parts 51A, 51B and 52A, 52B which engage parts adjacent the screen of two opposite walls of a cell. The cell walls are opaque and some may be broken away. The retaining parts each comprise two V-springs carried by cross-pieces 51, 52 which fit in at the top and bottom of a cell with straight ends 53A, 53B engaging the opposite cell walls adjacent where they bond with the screen. The cross-pieces carry conducting rods 54-54C between which is carried a lamp-holder 56 held in a square or round rubber grommet 55 which grips the rods whereby one or more plane or coloured lamps enter a cell or cells between the retaining parts to illuminate an object in front of the screen. Moving parts mounted on the panel may be driven from moving parts in the cells.
Patent GB-203897-A (GB)
Title: Improvements in or connected with steelyards
IPC: G01G1/26
Filed: 1922-09-09
Abstract: 203,897. Avery, Ltd., W. & T., and Sykes, C. M. Sept. 9, 1922. Steelyard apparatus.-In a steelyard of the kind having a notched protection bar for preventing the nib of the poise weight from damaging the notches in the steelyard each notch in the protection bar is formed with a lead-in and out so that the nib of the poise weight is first directed towards the steelyard notch and then moves vertically thereinto without contact of the point of the, nib with the sides of the notch. The usual rectangular notches 6 in the protection bar 4 are provided with inclined leads 7 down which a projection 11 secured to the poise slides and thereby adjusts the poise before the nib 8 reaches the steelyard. When the projection 11 enters the rectangular notch 6, the nib 8 is vertically over its notch and descends accurately into position without rubbing.
Patent GB-479476-A (GB)
Title: Improvements relating to elevators for stacking hay and like crops
IPC: A01D87/02
Filed: 1936-09-08
Abstract: 479,476. Elevators. FRASER, R. G. Sept. 8, 1936, No. 24453. [Class 78 (i)] A motor-driven portable elevator for stacking hay and like crops comprises an endless elevator 24 pivoted at one end to a triangular casing B which houses a motor power unit 7. The drive from the power unit passes through the casing to a driving pulley 6 on the pivoted end of the elevator. The casing is secured to a carriage 11 having wheels 10 and handles 13 and provided with hoisting tackle 16, 21 for varying the inclination of the elevator. The elevator comprises spiked cross-bars 26 carried by a pair of endless ropes 27 passing over end pulleys. A central longitudinal bar is secured to a metal apron 32 to press upon the hay and keep it on the upper flight of the elevator.
Patent GB-228482-A (GB)
Title: Improvements in connections for pipes, bars, and the like
IPC: F16L27/047
Filed: 1924-10-15
Abstract: 228,482. McGeorge, J. A. Oct. 15, 1924. Ball-and-socket joints. - A coupling for connecting pipes, bars, &c., which are adapted to be fitted in alignment or relatively inclined at any angle within limits, comprises two pipe ends or pipe-sockets 1, 2 and a union nut 3 screwing upon one of the pipe sockets or ends 2, the other socket 1 having concentric spherical surfaces 4, 5, adapted to make contact with corresponding spherical surfaces 6, 8 on the socket 2 and nut 3 respectively. The centre o of the surface 6 lies on or close to the plane of the end face of the socket 2, and the parts are so designed that, when the nut 3 is positioned, a clearance is provided for between the surface 11, connecting the two spherical surfaces 4, 5, and the end 7 of the pipe socket 2. The bore of the pipe socket 1 may be rounded or chamfered at its end 12, to provide a clearer passageway for the flow of liquid. In the modification shown in Fig. 3, the surface 4 of smaller radius, which contacts with the surface 6, is an internal surface.
Patent GB-1059099-A (GB)
Title: Improvements in calculating devices
Inventor: BERNSTEIN LIONEL
IPC: G06G1/00
Filed: 1964-06-12
Abstract: 1,059,099. Calculating-apparatus. L. BERNSTEIN. Sept. 13, 1965 [June 12, 1964], No. 24513/64. Heading G4B. A calculating device comprises at least two parallel tapes each marked with a logarithmic scale, and carried on spools mounted in a housing and movable past a datum line and positive drive members mounted on a common drive shaft to drive said tapes, the drive being transmitted from said drive shaft to the drive members through a clutch by which either or both drive members may be driven by said drive shaft. As illustrated in the Figs. (not shown), tapes (22), (22<SP>1</SP>) are wound at one end on drums (15), (15<SP>1</SP>) from which they pass over idlers (19), (19<SP>1</SP>), drive sprockets (6), (6<SP>1</SP>) and on to drums (11), (11<SP>1</SP>) (Fig. 3). The drive sprockets (6), (6<SP>1</SP>) are urged by springs (30), (30<SP>1</SP>) into engagement with the faces (32), (32<SP>1</SP>) of a friction disc (31) (Fig. 1). A shaft (9) carries forks (4), (4<SP>1</SP>) on a multistart thread so that on rotation of shaft (9) the forks engage grooves in sprockets (6), (6<SP>1</SP>) to engage or disengage one or other of the sprockets whilst disengaging or engaging the other (Fig. 4). The drums (15), (11) and (15<SP>1</SP>), (11<SP>1</SP>) are connected through a gear train, e.g. (12), (14) and (26) and drums (15), (15<SP>1</SP>) contain a pre-tensioned spring (18) which compensates for any change of tension in the tapes (Fig. 2).
Patent GB-806463-A (GB)
Title: Conveyor chains
Inventor: RAYBOULD ERNEST HARRY
IPC: B65G39/20
Filed: 1956-08-10
Abstract: 806,463. Endless chain conveyers. NEW CONVEYOR CO. Ltd. July 25, 1957 [Aug. 10, 1956], No. 24521/56. Classes 78 (1) and 104 (2). A conveyer chain for propelling trucks along a factory floor runs in tracks 4 and consists of a series of links each comprising a pair of longitudinal strips 5, cross-bars 6, 11 adjacent one end of the strips 5, the former carrying a pair of horizontal rollers 7 and the latter a pair of vertical rollers 12, a connecting-pin 9 at one end of the strips 5, and a U-shaped connecting member 13 at the other ends of the strips 5. The member 13 is welded between the strips 5 and is arranged to allow longitudinal play between adjacent links. The pin 9 is held in position by a pair of circlips 10. The cross-bar 6 is formed by two strips welded to the outer faces of the respective strips 5 and carrying a pin 8 between them at each end on which the rollers 7 are journalled while the bar 11 is a solid member welded between the strips and carrying stub arches for the rollers 12. A dog 17 is welded to the upper strip 5 for engaging a truck running on a floor above the tracks 4. The chain is driven by a chain 14 having dogs 15 which engage the bars 11 of the conveyer chain. Each link may carry supplementary driving abutments 16 for engagement by the dogs 15.
Patent GB-1311819-A (GB)
Title: Treatment of sewage
IPC: C02F3/22
Filed: 1971-04-19
Abstract: 1311819 Sewage treating plant SOUTH AFRICAN INVENTIONS DEVELOPMENT CORP 19 April 1971 [8 April 1970] 24525/71 Heading B1D [Also in Division Cl] Sewage flows along a series of endless channels 12 to 26 each connected to its neighbours at diametrically opposed points to maximise the total length of the flow path. Channels 12 to 18 have rotary disc aerators to agitate and activate the sewage, which flows from channel 18 into channel 20 through a float-controlled sluice. As illustrated in Fig. 1 (not shown) channels 12 to 18 are oval and channels 20 to 26 circular in plan. A second set of channels 20 to 26 may be provided to the right of Fig. 1. Channels 20 to 26 are settling channels spanned by a rotating bridge 65 carrying air lift pumps 66 to 72 which withdraw settled sludge and deliver it via pipe 74 to a central sludge channel 30. Chains (86 to 92) trail behind the pump inlets to agitate the floor layer of sludge and release gas therefrom. Flocculant could be added to channel 24 and mixed by means suspended from the bridge, and chlorine may be added to channel 26. Clarified liquid flows from channel 26 via passage (46) into the upper part of a channel 28 which encloses a downward flow sand bed filter 96, 98. Filtrate flows from space 100 through normally stationary pump 104 (Fig. 3) into a reservoir 108, 110, and periodically, under control of a float-switch above bed 96, pump 104 is switched on pumping filtrate upwards through the bed 96 until a timer switches it off. The filtrate thus used to backwash the filter flows over wall 122 into sludge channel 30, a one-way valve preventing flow back into channel 26. The sludge and liquid from channel 30 may return via conduit 128 to aeration channel 12 or may be discharged via conduit 126. Weir 112 in the reservoir prevents the liquid level in filter channel 28 falling below the top of bed 96 therein.
Patent GB-1168016-A (GB)
Title: Manufacture of Net-like Structures
IPC: B29C48/08
Filed: 1968-05-23
Abstract: 1,168,016. Extruding nets. FMC CORP. 23 May, 1968 [27 July, 1967], No. 24616/68. Heading B5A. [Also in Division D1] An extruded net comprises intersecting mesh strands which are bonded to one another at some only of the points of intersection. For example, Fig. 4, the upper strands 65 are bonded to strands 63 at intersection points 57, but freely cross strands 63 at intersection points 67. Such netting is produced by extrusion through orifices A, B, C &c. in a transversely reciprocable die plate 27 and orifices a, b, c &c. in a transversely reciprocable die plate 29, the die plates being separated by a comb-like separator 49, Fig. 1 and Fig. 3 (not shown), having teeth 55. As shown, the two sets of orifices are in alignment and communication with one another, the teeth 55 extending between one communicating orifice pair and the next. In this position of the die plates a transverse row of bonded intersections is formed. With reciprocation of die plates 27, 29 and with the separator held stationary, orifices A, b, B, c &c. are brought into alignment but are separated by teeth 55. In this position a transverse row of free intersections are formed. Further reciprocation of the dies brings into communicating alignment orifices A, c, B, d &c. and the formation of a further transverse row of bonded intersections. In Fig. 4, the reciprocation stroke of the die plates is such as to give a change of direction of each strand at each bond point, whereas the stroke of the die plates in Fig. 5 (not reproduced), is such as to give a change of direction of each strand at every second bond point. Variations may be introduced into the design of the net by transverse or angled reciprocation of comb 49 and the teeth thereof may be irregularly spaced, e.g. as at (69, 71), Fig. 6 (not reproduced). The die plates 27, 29 are transversely adjustable by sliding motion on projections 25, Fig. 1, of the die head, and are moved by rotation of screws 51. Comb 49 is suspended movably or otherwise from a bar 45 situated in extrusion channel 37. In a second embodiment of the die head, Fig. 7 (not shown), two materials of different composition and/or colour are fed separately one to each of the rows of orifices by the provision of a dividing wall (145). The use of annular dies is mentioned as is also the use of more than two die plates. The formed net may be stretched if required. Materials specifically mentioned are polyamides, superpolyamides, polyesters, PVC, cellulose acetate, natural or synthetic rubbers, polyolefins, thermosetting materials, viscose, cupro-ammonium cellulose and carboxymethyl cellulose. A foaming agent may be used as an additive.
Patent GB-1465250-A (GB)
Title: Positive displacement rotary screw machines
IPC: F04C18/16
Filed: 1975-06-09
Abstract: 1465250 Axial screw compressors DUNHAM-BUSH Inc 9 June 1975 [26 July 1974]  24656/75 Heading F1F To balance the pressure in the closed chevron shaped working chambers just prior to their opening into a discharge port 40 and the pressure in a delivery passage 42, an axial-flow meshing screw compressor includes a valve-member 38 which slides axially and thereby alters the compression ratio and a servosystem having a spool valve 92 which opens when an imbalance exists to permit fluid to flow into a cylinder 50 and move a piston 48 connected to the valve-member 38. The two lands 98, 104 of the spool valve 92 are subject at their outer ends respectively to the pressure in the working chamber and in the delivery passage 42. The valve-member 38 has a port 72 which communicates with the working chambers of the compressor just prior to their opening into the discharge port 40 and is connected via a duct 70, annular chamber 76, radial bores 82 and an axial bore 80 in a piston-rod 46, bore 86 and pipe 88 to a port 108 in the spool valve 92. The delivery passage is connected to port 110 of the spool valve 92 via a pipe 136. In a second embodiment, two such valves as valve-member 38 and their respective servosystems as spool valve 92 and piston 48 are arranged on opposite sides of the compressor and the valves are opposed to one another at opposite ends of the compressor. In this arrangement, the compressor can be driven in either direction, in either of which the valve at the high-pressure side of the compressor operates to automatically balance the pressures as described above and the other is used to adjust the compressor's capacity.
Patent GB-226302-A (GB)
Title: Improvements in pie or like moulding machines
IPC: A21C3/00
Filed: 1923-10-04
Abstract: 226,302. Christiansen, E. Oct. 4, 1923. Pie-moulding machines ; flower-pot and like machines.-Relates to machines for moulding pie casings and other articles, of the type comprising a moulding-tool carried eccentrically on the end of a rotary spindle, and comprises a tool rotatably mounted upon a pin which is carried eccentrically by a rotary spindle. As shown, the tool 1 is rotatably mounted on a pin 2 by a thrust ball 4 and a spring ball 6 engaging a groove 7 in the pin, which is carried eccentrically by a stem 3 supported within and adapted to be driven by a sleeve 8 splined to a worm gear 9 operable through a motor 10. The stem 3 is eccentrically disposed within the sleeve 8, and is furnished with a pin 14 engaging a cam slot 13; by means of a lever 11 and collar 12, the sleeve 8 can be raised or lowered to vary the throw of the pin 2. A mould or tin 15 is supported within a recess 29 in a table 16 carried by a stem 20 adapted to be raised by a pedal 17 and chain 18, and the mould, which may comprise halves hinged at 27 and secured by a catch 28, may be positioned by pins 30 engaging slotted lugs 31 on the table. The tool 1 carries a cutter 22 resiliently held by springs 23. According to the Provisional Specification, the tool is carried by a spindle of the drilling machine type; also the mould may be slidably supported upon its bed for the production of undercut articles.
Patent GB-1514212-A (GB)
Title: Electrooptical wave-guide structures
IPC: G02F1/03
Filed: 1975-06-10
Abstract: 1514212 Controlling light SIEMENS AG 10 June 1975 [6 Sept 1974] 24764/75 Heading G2F An electrically controllable optical waveguide structure comprises a guide 3 between dielectric layers 2, 4 on a substrate 1, part of the guide being between electrodes 5 and 6 being formed with a periodic relief pattern 7 of parallel grooves which extend transversely of the optical propagation direction, either that part of the guide being formed of, or the pattern 7 being filled with, material having an electric field dependent refractive index. Depending on the material of the guide and that used for filling the pattern 7, waves propagating in the guide undergo interference either in the absence or the presence of a voltage between the electrodes, the amount of interference being a function of voltage, so that the guided wave may be intensity modulated (including switching), dispersed from the guide, or selectively coupled into an adjacent guide e.g. between guide 3 and one of the dielectric layers and spaced from the guide by a further dielectric layer. For dispersion from the guide, electrodes 5 and 6 may be transparent. The pattern 7, which may be sinusoidal or sawtooth, can be produced by etching, sputtering, heating, mechanically or by vapour deposition. The substrate 1 may be of glass, crystal or semiconductor material.
Patent GB-425673-A (GB)
Title: Manufacture of vinyl formate
Filed: 1934-08-30
Abstract: Vinyl formate is manufactured by heating a vinyl ester of an acid containing more than one carbon atom with formic acid, preferably in the presence of a salt of a heavy metal as catalyst, especially a mercury salt which is advantageously used in the presence of a mineral acid.  The mercury salt may be produced in situ, the presence of a mineral acid being secured by using a quantity thereof in excess of that required for forming the salt. In examples: (1) vinyl acetate and formic acid are heated together with the addition of mercuric oxide and phosphoric acid; (2) the phosphoric acid is replaced by sulphuric acid.  The reaction may be carried out in the presence of an antioxidant, e.g. hydroquinone.
Patent GB-1373289-A (GB)
Title: Hydraulic spring brakes
IPC: B60T17/08
Filed: 1972-05-26
Abstract: 1373289 Spring brake actuators CLAYTON DEWANDRE CO Ltd 4 May 1973 [26 May 1972] 25005/72 Heading F2F A spring brake actuator comprises two aligned hydraulic cylinders 5, 6 in one, 6, of which is a piston 7 connected to brake linkage 8, and in the second, 5, of which is a further piston 11 which abuts piston 7, there being a port and conduit connection 13 to cylinder 5 from the hydraulic brake circuit which normally holds piston 11 in an inoperative position against the bias of a spring 17, and a port and conduit connection 10 from a service line to the cylinder 6 so that when pressure is admitted to the latter cylinder it acts on pistons 11, 6 in opposite directions ensuring that a compound thrust from the two pistons cannot be exerted on the brake linkage. Spring 17 acts through a spring seat 16, sleeve 15, and a rod 14 threaded to the sleeve to apply the brake if the pressure in the hydraulic circuit fails. To release the spring applied brake rod 14 is provided with a bolt head 14a to rotate the rod and permit piston 11 to move rearwardly. Alternatively a washer abutting an end-plate 22 is inserted beneath the bolt head which is then rotated to withdraw the rod and spring seat. Bearing rings 18, 20 serve to locate the spring seat 16 against tilting and binding.
Patent GB-204873-A (GB)
Title: Electric water heater
IPC: F24H1/12
Filed: 1922-09-15
Abstract: 204,873. Colebrook, W. Sept. 15, 1922. Wire and ribbon resistances, cored and encased. -In a water heater the main iron cylinder b is coated with vitreous enamel on which is wound resistance tape c held in position by a metal armouring separated therefrom by mica insulation. The armouring may comprise a soft metal wire wound over the insulation.
Patent GB-1097655-A (GB)
Title: A method of producing cold
IPC: F17C9/04
Filed: 1966-06-06
Abstract: 1,097,655. Heat-insulated pipes. SHELL INTERNATIONALE RESEARCH MAATSCHAPPIJ N.V. June 6, 1966 [June 8, 1965], No. 25120/66. Heading F2P. [Also in Division F4] In a closed liquid circulating system for transferring cold from a heat exchanger 2 to heat exchangers 8, the outflow line 6 has thermal insulation on its inside and is located within the inflow line 7.
Patent GB-1026018-A (GB)
IPC: H04B3/18
Filed: 1964-06-18
Abstract: 1,026,018. Transistor negative resistance and trigger circuits. PHILIPS ELECTRONIC & ASSOCIATED INDUSTRIES Ltd. June 18, 1964 [June 21, 1963], No. 25282/64. Heading H3T. A negative resistance device comprises a pair of transistors, reciprocally coupled via resistors, substantially as shown in the portion surrounded by broken lines. It is shown that, if the voltage between terminal 5 and the positive terminal is gradually increased from zero, the current is initially taken by Tr2 and increases until Tr1 becomes conductive when the total current becomes reduced to a low value. The negative resistance characteristic thus formed may be used to reduce damping in a resonant circuit. Bi-stable switching circuits.-If a load RL is connected as shown, the load current has two stable states: one state occurring when Tr1 is conductive and giving a low value of load current determined by resistor Rc; the other occurring when Tr2 is conductive and Tr1 substantially non-conductive, giving a high load current. Resistors may be included in the emitter circuits.
Patent GB-577790-A (GB)
Title: Improvements relating to the manufacture of light non-metallic structural material or components
IPC: B64C3/00
Filed: 1938-08-29
Abstract: 577,790. Compound sheet materials. BRUYNE, N. A. De, AERO RESEARCH, Ltd., and DE HAVILLAND AIRCRAFT CO., Ltd. Aug. 29, 1938, Nos. 25297 and 31468. [Class 140] [Also in Groups V and XXXIII] A method of manufacturing light reinforced synthetic - resin structures in cellular form, applicable to the construction of aircraft &c. comprises laying or wrapping an unset resinimpregnated fibrous or filar reinforcement material, such as textile fabric, rove, sliver, &c, over or around a series of cores so that these cores, which are packed together substantially parallel, are each surrounded and continuously separated by the material, applying heat to the pack, applying pressure to the pack transversely to the cores, and withdrawing the cores endwise from the material, whereby a set cellular structure of reinforced resin is left. To produce a structure having hexagonal cells or passages, a mould bed 1, Fig. 1, is provided with ribs and grooves, and over it is applied a first layer 2 of resin-impregnated fabric, a series of hexagonal cores 3, a second layer 4 of impregnated fabric, a second series 5 of cores, and so on, the pack being completed by a platen 8 and then heated and compressed, after which the cores are withdrawn endwise. Alternatively, the cells may be of triangular, square, circular &c. crosssection. The outer surfaces of the cellular material may be covered by a sheet or skin of resin-impregnated or adhesive-treated material, such as laminated material or wood veneer, which may be applied prior to the application of heat and pressure to the pack. The set material, e.g., in the form of a plank or board, may have the cellular cross-section either transverse to the board &c. or in the plane thereof, the latter form being applicable to a tailplane &c. structure provided with a stressed skin. Such a skin may be formed by applying over the ends of the cell walls 36, Fig. 9, a layer of impregnated fabric 37, which is pressed down to form shallow pockets and is secured by stitching or stringing 38' at each side of the walls 36. The pockets are filled with unset resin 38, over which is laid a skin 39 of impregnated veneer, fabric, metal &c. the whole being set by heat and pressure. The cellular structure may be curved in cross-section. The cells may taper lengthwise.