baber/WOPTO huggingface dataset:
Patent GB-1089877-A (GB)
Title: Direct-coupled amplifier systems
IPC: H03F3/30
Filed: 1964-12-11
Abstract: 1,089,877. Transistor amplifying circuits. ELECTRONICS ASSOCIATES Inc. Dec. 11, 1964 [Dec. 31, 1963], No. 50600/64. Heading H3T. In a direct coupled amplifier comprising at least one conductor intended to carry a signal of variable magnitude in dependence on the input signal, and at least one component which is liable to be damaged on the occurrence of excessive flow through the said conductor, the conductor comprises a non-linear resistance device, the resistance of which is normally low but temporarily assumes and maintains a substantially increased value on the occurrence, and during the continuance of a current flow through the device in excess of a predetermined limit. The invention is described as applied to an operational amplifier in which input networks 18 feed summing junction 19 to which are connected (1) direct-coupled amplifier 10 via D.C. blocking capacitor 25 and input limiting diodes 30, 31; (2) the input of a chopper-type balancing amplifier 15, the output of which determines the D.C. input level of amplifier 10; and (3) negative feedback circuit 22. Amplifier 10 comprises a grounded-emitter stage 11 driving an emitter-follower stage comprising complementary transistors 12, 13, the bases of which derive bias via resistor 43 and diodes 40a, 40b. According to the invention resistors whose value increases when the current exceeds a predetermined level are placed (1) resistor 36 in the collector circuit of transistor 11; and (2) (3) resistors 36a, 36b in the leads between the emitters of transistors 13, 12 respectively and the output terminal 23. A similar resistor may also be connected in series with the input to the amplifier, where it also protects a potentiometer from which the amplifier is fed (Fig. 2, not shown); it may alternatively be connected in the input lead to the potentiometer. The resistance may comprise an iron wire in a hydrogen atmosphere or a tungsten wire in argon or zenon.
Patent GB-1320426-A (GB)
Title: Multiple solution testing device
IPC: B01L99/00
Filed: 1971-11-01
Abstract: 1320426 Apparatus for dropwise reactions PFIZER Inc 1 Nov 1971 [6 July 1971] 50743/ 71 Heading B1X A method of simultaneously testing the reaction of a number of solutions with a reactive substrate comprises the steps of placing a number of drops of said solution 1 in a holder thereby suspending portions of said drops vertically below said holder, disposing said reactive substrate upon a lower plate, moving said holder closely adjacent said lower plate whereby said drops simultaneously contact said reactive substrate to simultaneously commence reactions between said solutions and said reactive substrate, and separating said holder from said lower plate whereby portions of said drops transfer to said reactive substrate for completing said reactions. The holder may be a plate 12 with holes 32 containing drops 36 of solution; as shown, the plate is vertically slidable on rods 18 so as to approach plate 14 bearing reactive substrate 38 which may be a continuous length of film.
Patent GB-1068367-A (GB)
Title: Improvements relating to pistons and piston rings
IPC: F16J9/14
Filed: 1964-06-10
Abstract: 1,068,367. Piston rings. SEALED POWER CORPORATION. June 10, 1964 [June 17, 1963], No. 50854/66. Divided out of 1,068,366. Heading F2T. The subject-matter of this Specification is identical with that described in Specification 1,068,366, but the claims differ.
Patent GB-1406420-A (GB)
Title: Seat lifting mechanism
IPC: A61G5/14
Filed: 1971-11-03
Abstract: 1406420 Invalid chairs B W LYWOOD 5 Feb 1973 [3 Nov 1971] 51178/71 Heading A4J An invalid chair has a two part seat portion 3, 4 which is biased upwardly to help a seated person to stand by a system of links arranged to support the rear 4 of the seat portion in the same orientation to the horizontal during movement between the lowered sitting position and the raised standing position. Preferably the links include a parallelogram linkage 19 with two fixed points C, D on the chair frame, one side 21 of the linkage being common with a second parallelogram linkage connected to the two pivotally interconnected seat parts. A tension spring 32 having one end adjustable along an accurate weight adjustment guide 33 on the common side 21 resiliently biases the seat portion upwardly. The height to which the seat portion can be raised may be adjusted by adjustment of a strut 35 connected to an inward entension 25a of the lower link 25 of the first linkage in arcuate guide 34 formed in the lower end of the upper link 27 of the second linkage. In a modification, Fig. 1 (not shown), the fixed points of the first linkage are on the front and base of the chair frame and the seat parts 3, 4 are connected by struts to this linkage, there being no second parallelogram linkage, height adjustment means or weight adjustment means present.
Patent GB-1528965-A (GB)
Title: Liquid droplet ejecting systems
IPC: B41J2/175
Filed: 1975-12-16
Abstract: 1528965 Ink droplet printers GOULD Inc 16 Dec 1976 [16 Dec 1974 (2)] 51459/75 Heading B6F An ink droplet printer includes means to purge air bubbles from the system, comprising a secondary conduit 35 communicating with the primary conduit 5 upstream of the nozzle orifice 21, the arrangement being such that ink can be pumped through the primary and secondary conduits before use of the printer to eliminate any air present in the primary conduit. The nozzle orifice 21 may be closed during purging.
Patent GB-1143997-A (GB)
Title: Radar systems
IPC: G01S13/42
Filed: 1966-11-21
Abstract: 1,143,997. Pulse radar. RAYTHEON CO. 21 Nov., 1966 [1 Dec., 1965]. No. 52049/66. Heading H4D. The Specification describes a three dimensional pulse radar, having an antenna array 10 and a beam forming matrix 12, producing a plurality of beams overlapping in elevation, an echo signal being picked up by a particular beam, appearing on a respective one of R.F. lines 24 and I.F. lines 26. Each transmitted pulse has a width T defining the range cell. A commutator switch 16 repeatedly sweeps each line 26 to output 30 taking time T to complete the sweep. Thus part of an echo appearing on one of lines 26, in a range cell defining the range of the target, appears on line 30 at a time in the commutator sweep defining the beam on which the echo was received and the elevation of the target. The output of the commutator is thus used to energize a height/range display. The array also rotates in azimuth thus enabling a range azimuth display to be produced. Successive echos from the same target during the azimuth rotation are integrated at 18.
Patent GB-1508950-A (GB)
Title: Solar heat collector module
IPC: F24S10/75
Filed: 1976-12-16
Abstract: 1508950 Solar heating D J LIGHTFOOT 16 Dec 1976 52582/76 Heading F4U A solar collector comprises a housing 24 provided with a transparent cover 29 and containing a reflector 33 and a heat collector tube 39 through which water or air to be heated is passed. The reflector is formed of aluminium or stainless steel and has a curvature in the shape of section of a hyperbolic spiral. The cover 29 comprises a double pane, the upper pane 31 being made of a polyvinyl fluoride plastics film which is opaque to infra-red radiation and the lower pane 32 being made of transparent fibre glass. The tube 39 is of triangular cross-section and is made of aluminium formed by extrusion. The inner surfaces of the tube walls are formed with fins 44 and the outer surfaces are coated with a black heat absorbing. material. A bank of collectors connected in series, parallel or series-parallel, may be mounted on the roof or a wall of a building, Figs. 1 and 2 (not shown) and connected in a circuit including a hot water storage vessel on a hot air thermal storage system. When air is used as the heat transfer fluid, it may be used for drying grain.
Patent GB-1416025-A (GB)
Title: Storage device comprising bipolar electrodes
IPC: H01M12/08
Filed: 1972-11-14
Abstract: 1416025 Storage device including bipolar electrodes OMF CALIFORNIA Inc 14 Nov 1972 [18 Nov 1971 (2)] 52623/72 Heading H1B A storage device of the metal/metal halide/ halogen type includes an aqueous metal halide electrolyte and at least two bipolar electrodes 13, 15, each bipolar electrode comprising a gas- and electrolyte-impervious wall 21 as a negative electrode which has a metal layer 23 on one surface and which is joined at its other surface to a porous member 25 forming the positive electrode, with a number of passageways 29 defined between the wall and porous member through which the electrolyte flows before it passes through the porous member 25 into the reaction zone 31 of an electrolytic cell formed by the negative electrode of one bipolar electrode and the positive electrode of an adjacent bipolar electrode. The porous member 25 is a unitary structure formed of amorphous carbon or graphite with a porosity such that a cross-section comprises 20-80% carbon with an average pore diameter of 5-300 microns and a minimum thickness of 0À3-3 mm. and a number of straight parallel grooves are formed therein which with the wall 21 define the passageways 29. Alternatively the porous member may be formed of sintered titanium or rutile with a noble metal or oxide catalyst, e.g. platinum or ruthenium oxide. The impervious wall 21 is preferably formed of graphite 0À3-4 mm. thick and has a coating 23 of 25-4000 microns thick of an electropositive metal from Group IIB or VIII, e.g. iron, cobalt, nickel or preferably zinc. Electrolyte from inlet duct 17 enters the passageways 29 as indicated at 37, passes through the porous member 25 and into the reaction zone 31 and is removed via the outlet manifold 19. A hole may be provided in the bipolar electrode at the top of each passageway 29. preferably formed through the porous member 25, to prevent the build-up of any gas in the passageways, Fig. 4 (not shown). A number of specific examples of storage devices of the preferred zinc/chlorine type are given. A diaphragm may be interposed between the porous carbon and the zinc to prevent contact of chlorine with the zinc. The storage device system is generally described in Specification 1,339,060. The porous carbon member 25 may be secured to the graphite wall 21 by the means disclosed in co-pending Application 52619/72.
Patent GB-1515587-A (GB)
Title: Hydraulic amplifier
IPC: B60T13/12
Filed: 1976-12-20
Abstract: 1515587 Hydraulic brake boosters SOC ANON DBA 20 Dec 1976 [16 Jan 1976] 53072/76 Heading F2F Separate pressure supply and exhaust valves  30, 28 for a pressure chamber 16 of a booster of  the type having a servo-piston 18 and an operators control rod 38 extending into the chamber 16, and a valve actuating lever mechanism 32 comprising a lever 34 engaging, at one end, the control rod 38 and pivoting on a movable spring urged pin 36, and a rocker 40 pivoted to the lever 34 and abuttable at its ends with the servo-piston 18 and at least one valve, are actuated respectively by movement of the pin 36 and by one end of the rocker 40. The normally open exhaust valve is closed on initial control rod movement by a piston 44 of at least the area of the seating 48 of the valve ball 50, transverse movement of the pin 36 operating a tappet to lift the inlet valve from its seating. The pin 36 is mounted in slots 78 in extensions of sleeve 52 (Fig. 2) or in the Y- shaped end (171) of the inlet valve lifting tappet (172) (Fig. 3, not shown).
Patent GB-1167347-A (GB)
Title: Improvements in Cutting Tools with Replaceable Tips
Inventor: LOWE WILLIAM MAURICE
IPC: B23C5/24
Filed: 1966-11-28
Abstract: 1,167,347. Cutting tool. METRO-CUTANIT Ltd. 28 Nov., 1967 [28 Nov., 1966], No. 53162/66. Headings B3C, B3K and B3T. A cutting tool having an insert 37 removably secured to a holder such as a turning or boring tool shank or milling cutter body, has means for clamping the insert to the holder which comprises a screwed plug member 15 rotatable in a threaded bore 11 in the holder and a pin member 23 engageable with the plug member and projecting into a hole 39 in the insert the rotation of the plug member effecting canting or tilting of the pin member whereby the insert is moved transversely of the axis of the first member into engagement with abutments on the insert holder. The engaging portions of the members having part spherical faces which produce a cam action to effect tilting the pin member in relation to the plug member. Preferably two abutments are provided on the holder and against which the insert is clamped. Alternatively one of the abutments may be adjustable. The location of the first member relative to the abutments being such as to permit the insert to engage one of the abutments slightly before engaging the other.
Patent GB-1510920-A (GB)
Title: Rotary electric switch
IPC: H01H19/11
Filed: 1976-12-21
Abstract: 1510920 Mechanical switches OAK INDUSTRIES Inc 21 Dec 1976 [29 March 1976] 53237/76 Heading H1N A rotary electric switch comprises a rotor 12 carrying at least one contact 82 in an aperture 72 and a shaft 10 connected to a stator 14 which comprises an electrically non-conductive support member 20 having projections 22 received in openings in an electrically conductive member 24, Fig. 7, having terminals 54, 56. The rotor 12 is positioned between two support members 20 spaced apart by engaging posts 26 and having projections 22 for locating conductive members 24, some of the conductive portions 52 of which are severed depending upon the switch pattern desired. Contacts 82 having bifurcated arms 86 engaging the members 24 are positioned in apertures 72 in the rotor 12 which are positioned at unequal distances from the centre of the rotor 12 so that the contacts 82 wipe different portions of sections 60 of the members 24 when the shaft 10 is rotated. The rotor 12 has detent projections 70 which co-operate with a detent spring (34) (Fig. 8, not shown) to provide an indexing function. The rotation of the shaft 10 is limited by co-operating stops (48, 95) (Fig. 1, not shown) More than one pair of support members 20 may be mounted on a single shaft 10 in engagement with or separated from each other by spacers (46) (Fig. 2, not shown).
Patent GB-1133948-A (GB)
Title: A paper web winding machine
IPC: B65H19/26
Filed: 1966-11-30
Abstract: 1,133,948. Winding webs. EDET INTERNATIONAL N.V. 30 Nov., 1966 [3 Dec., 1965], No. 53577/66. Heading B6B. In a three-drum, two-stage, web winding machine, the cut-off and transfer mechanism comprises an arcuate plate 12 which closely surrounds the new core 8 in the transfer position, and which has attached thereto a blade 11 which co-operates with the second winding drum 4 to sever the web. A series of openings (14, Fig. 2) in the blade, parallel to the cutting edge, allows a quantity of air to be drawn into the annular space between the plate 12 and the core 8, caused by the rotary motion of the core 8. This induces the cut end of the web to be deflected about the new core 8. A feeler 10 contacting the surface of the web-roll 9 causes the cut-off and transfer mechanism to be lowered and the finished web-roll to be discharged, when the required web-roll diameter is achieved.
Patent GB-1313458-A (GB)
Title: Process and installation for the preparation of homo- or copolymers of ethylene
IPC: C08F10/00
Filed: 1971-11-24
Abstract: 1313458 Polymerizing ethylene STAMICARBON NV 24 Nov 1971 [27 Nov 1970 21 July 1971] 54634/71 Heading C3P Polymers are prepared by polymerizing a monomer feed comprising ethylene at elevated temperature and pressure in a reactor provided with a pressure-release safety device whereby if the pressure exceeds a predetermined limit the contents of the reactor are rapidly evacuated through an outlet pipe, means being provided for discharging water into the evacuating gases within 10 seconds after the safety device has become operative, in an amount at least to cool the gases below the ignition temperature of a mixture thereof with air. A plurality of containers adapted to release water contained therein on exposure to the evacuating gases may be attached to a chain or cable located in the outlet pipe, or may be accommodated in one or more tubes which are closed at one end and communicate with the outlet pipe at the other, e.g. via a grid. The containers may be made of thermoplastic material, and the water may contain antifreeze. Alternatively a sprinkler may be located within the outlet pipe or adjacent the discharge end thereof, the sprinkler being actuated by operation of the pressure release device, via a quick-acting valve or rupture disc comprising an electrically detonated explosive charge. The pressure release device may comprise a rupture disc or resettable relief valve, and may be adapted to disconnect the compressor and stop the monomer feed. Apparatus suitable for carrying out the process of the invention is described and illustrated.
Patent GB-1299972-A (GB)
Title: Metal sheet feeding and forming or punching apparatus
IPC: B21D19/12
Filed: 1970-03-11
Abstract: 1299972 Metal sheet feeds; flanging LOCKFORMER CO 11 March 1970 [12 March 1969] 54740/71 Divided out of 1299971 Headings B3E and B3W A metal sheet feeding and forming or punching apparatus comprises a sheet receiving station in which a sheet is positioned before it is moved to a forming &c. station alongside the receiving station, forming elements mounted on carriages a sheet being fed between the carriages so that opposed edges may be formed and the spacing between the carriages being variable to accommodate sheets of varying widths, and links which maintain sheet support plates, which are vertically spaced for passage of a sheet between them, evenly spaced in response to relative movement between the carriages. As shown, Fig. 1, sheets are fed by rollers 88 on to support rods 86 at an upper level of feed device 12. When a sheet has passed a switch (96), Fig. 4 (not shown), and a time lag has occurred, the arms 48, 50 supporting rods 86 are pivoted outwardly to the broken line position. Fig. 5, by piston and cylinder arrangements 56, 60, and 80, 82 to drop the sheet on to rollers 32 of a lower station. The arms 50 are adjustably mounted to accommodate different sheet sizes. The rollers 32 move the sheet back towards the entry end of the device until it operates two microswitches 118 which actuate a piston and cylinder 112, 114 to move a carriage 100 carrying pusher fingers 102 transversely of the device 12 into a flanging device 14. Flanging rolls are supported on a fixed carriage 150 and a carriage 142 movable to accommodate different sheet sizes. The carriage 150 carries two sets of roll pairs and is pivotable in end plates (188), (190), Fig. 8, (not shown), through 180 degrees to bring either set into play. The sheets are fed by the pusher fingers 102 between a series of pairs of narrow guide and support plates 210, (208) slidably mounted on rails (220), 212. Adjacent pairs of plates are interconnected by a lazy tongs device 222 to allow for movement of the carriage 142. A series of progressive edge-forming rolls are shown in Fig. 14 and edges formed thereby in Figs. 11-13. The flanging rolls may be replaced by punches.
Patent GB-1058879-A (GB)
Title: Improvements in or relating to candy sweetmeats
IPC: A23G3/00
Filed: 1965-12-24
Abstract: A candy sweetmeat is mounted on one end of a cylindrical injection-moulded rod which has a spiral groove along its peripheral surface, there being provided flattened surfaces on the periphery at each intersection of the parting lines with the groove, a collar rotatably mounted on the end of the rod opposite the candy, and a rotary member mounted on the rod and engaging the groove, such that when the member is moved linearly along the rod, the rod, and thus the candy, is caused to rotate.  The member may be threaded or provided with a number of inwardly projecting portions so spaced that at least one of the projecting portions is always in engagement with the groove.
Patent GB-1346117-A (GB)
Title: Polysiloxane emulsions containing condensation products of silicon-containing amines with epoxide compounds
IPC: C08L83/04
Filed: 1971-11-25
Abstract: 1346117 Waterproofing textiles RHONEPOULENC SA 25 Nov 1971 [26 Nov 1970[ 54856/71 Heading D1P [Also in Division C3] Textiles are rendered water repellant by treatment with aqueous emulsions comprising alkylhydrogenpolysiloxanes and condensates, having free amino groups, prepared by reaction of a (I) compound: (R<SP>1</SP>O) 3 -Si-RNH-R-NH 2  (R and R<SP>1</SP> are respectively alkylene and alkyl and may each be the same or different) and (II) a diglycidyl ether: R<SP>1</SP> and R<SP>2</SP> are independently H or alkyl radicals and R<SP>3</SP> and R<SP>4</SP> are independently substituted or unsubstituted para-phenylene radicals and n is at least one or when R 1  and R 2  are each methyl and R 3  and R 4  each unsubstituted p-phenylene, n is 0; the wt. ratio of II:I is at least 0.5:1. Reaction may take place at 0-150‹C, optionally in a hydroxylic solvent. An exemplified condensate is prepared by reacting (MeO) 3 Si(CH 2 ) 3 NH(CH 2 ) 2 NH 2  with a diglycidyl ether of bisphenol A. Examples relate to the treatment of cotton and cotton/ polyester fabrics.
Patent GB-1129090-A (GB)
Title: Process for the preparation of water-soluble, thermosetting copolymers of ª‡-ªß-olefinically unsaturated carboxy monomers
IPC: C08F20/62
Filed: 1965-12-31
Abstract: 1,129,090. Coating surfaces. STAMICARBON N.V. 31 Dec., 1965 [31 Dec., 1964], No. 55423/65. Heading B2K. [Also in Division C3] A metal plate is coated with a paint composition comprising (a) an alcohol, (b) a copolymer of acrylic acid, acrylamide, ethyl acrylate and, optionally, methyl methacrylate, the acid groups of the copolymer being neutralised with ammonia and amide groups of the copolymer being methylolated, (c) titanium dioxide and, optionally, (d) water. The coating is enamelled at 170‹C for 3 minutes.
Patent GB-1200746-A (GB)
Title: Improvements in carrier bags and handles for use therewith
Inventor: GATWARD HARRY FREDRICK
IPC: B65D33/10
Filed: 1967-12-12
Abstract: 1,200,746. Carrier bags. COLOROLL Ltd. 26 Feb., 1969 [12 Dec., 1967], No. 56432/67. Addition to 1,019,706. Heading A4G. A carrier bag handle as in claim 1 of Specification 1,019,706 wherein the heat fixing of the handle ends and the composite paper patch is effected by dielectric or ultrasonic welding.
Patent GB-1215149-A (GB)
Title: Improvements in or relating to manufacture of corrugated paperboard
Inventor: BOMAR THOMAS CARLTON
IPC: D21H19/18
Filed: 1967-12-14
Abstract: 1,215,149. Laminated corrugated paperboard. INTERNATIONAL PAPER CO. 14 Dec., 1967, No. 56782/67. Heading B5N. Corrugated paperboard comprising a corrugating medium and at least one liner is made by applying wax or a wax-thermoplastic resin blend to the liner and the medium, corrugating the waxed medium and bonding the layers by adhesive with heat and pressure, the medium being treated with water, e.g. by spraying, before and after waxing. The waxing of the lines may be before or after securing to the medium. The paperboard may be wet-strengthened. The wax may be applied molten, and may be blended with petroleum resins. Heattreating of the medium before corrugating is advantageous.
Patent GB-1291059-A (GB)
Title: Concrete press
Inventor: ROSS KEITH
IPC: B28B7/02
Filed: 1968-11-29
Abstract: 1291059 Moulding concrete DAVY & UNITED ENG CO Ltd 31 Dec 1969 [29 Nov 1968] 56935/68 Heading B5A A concrete press comprises a lower platen 18 with edge formers 15 and a grating 10 with passages therethrough for water drainage providing a concrete receiving mould, and an upper platen, not shown, for pressing the concrete. The grating 10 comprises two sets of parallel elongate members 11 and 12 respectively, the members of one set being arranged at right angles to those of the other and the members 12 being located in slots in the members 11 to provide drain channels 14 between members 11. Each edge former is adjustably located on the grating by keys 16 closely fitting in the grating passages.