baber/WOPTO huggingface dataset:
Patent GB-1205931-A (GB)
Title: Improvements in or relating to building apparatus
Inventor: EVANS PERCY NORMAN
IPC: B66B9/187
Filed: 1966-09-07
Abstract: 1,205,931. Hoists; winches. P. N. EVANS. 30 Nov., 1967 [7 Sept., 1966], No. 39924/66. Headings B8B and B8H. A hoist for raising tiles or slates to a roof comprises a sectional track 10-13, Figs. 2-9 (not shown), having the upper sections supported on the rafters of the roof under construction, a carriage 35 movable on the track by means of a winch assembly 18, and a knock-off device 43 which is adjustably locked to the track and which is clamped to a winch control cable 40 to prevent movement of the cable to apply the winch brake, the knock-off device including a trigger mechanism to release the lock when the carriage engages the device to cause the winch brake to be applied. The winch drum shaft 65 is mounted in eccentric bearings 101 controlled by a lever, to which the control cable is attached, by which it can be moved to bring the drum into contact with a friction drive wheel 64 or with a friction brake 105. A sprocket 103 on the shaft 63 of friction wheel 64 drives, through a chain 66, a pawl plate 67 free on the shaft 65 but having sprocket teeth. The plate carries pawls which engage ratchet teeth formed on an inside surface of the winch drum, the ratcheting direction being such that the pawls slide over the teeth when the winch is winding in. On lowering the carriage, when the friction wheel is not engaging the drum, the pawls continue to slide over the ratchet teeth when the pawl plate is running faster than the drum, but engages the teeth to restrain the drum speed to that at which it can be driven by the motor. The knock-off device, Fig. 15, comprises plates 80-82 supporting rollers 83a which rest on one of the track members. An arm 87, pivotally mounted on an eccentric bush 86 is connected by a spring 88 to a trigger 89 pivoted on one end of a bar 110 linearly movable between plates 80, 82. In the " automatic " position, a projection 114 on the trigger is latched over a separator 83 between plates 80, 82 to tension the spring 88 so that the arm 87 is forced against the lowermost surface of the track, thereby allowing downward but not upward movement of the device on the track. The return run of the control cable 40 from the head gear is secured to the knock-off device by a clamp 115. When the operator pulls the control cable to start the winch, the device moves down the track and thereafter the tension is retained in the cable until the carriage engages the trigger 89, which is thereby unlatched allowing the bar 110 to move to the right to release the tension in the spring 88 and free the knockoff device. The tension in the control rope is thereby released allowing the winch control lever to move to the " brake " position. The knockoff device is reset by means of a knob on the bar 110 extending through an opening 113 in the plate 80. A tile-carrying trolley, Figs. 18-20 (not shown), is associated with the hoist and is adapted to be moved horizontally along the roof from a position adjacent the knock-off device.
Patent GB-1402958-A (GB)
Title: Flame-retardant impact-resistant resin composition
IPC: C08L7/00
Filed: 1973-08-23
Abstract: 1402958 Flame-retardant impact-resistant resins DAICEL Ltd 23 Aug 1973 [24 Aug 1972] 39968/73 Heading C3G A flame-retardant, impact-resistant resin composition consists essentially of (A) rubbermodified copolymer, containing admixed therein, (B) from 10 to 20 parts by weight, per 100 parts of copolymer (A), of chlorinated polyethylene, chlorinated ethylene-propylene copolymer, chlorinated ethylene-butene copolymer or chlorosulphonated polyethylene, having a chlorine content of from 25 to 45% by weight, said copolymer (A) comprising (a) from 3 to 30% of rubber component and (b) from 97 to 70% of resin component, said resin component (b) consisting of (1) at least 40% by weight of aromatic monoalkenyl compound, (2) from 15 to 35% of at least one compound of formula wherein R 1  is H or CH 3 , R 2  is C 1  to C 4 -alkyl or chlorine, "l" is an integer of 2 to 5, "m" and "n" are each 0, 1, 2 or 3, provided that I + m + n is 5; (3) the balance, if any, of ethylenically unsaturated monomer copolymerizable with said aromatic monoalkenyl compound. Examples are given of compositions in which (B) is chlorinated polyethylene and (A) is butadienestyrene rubber grafted with styrene, 2,4,6- tribromophenyl methacrylate and acrylonitrile; polybutadiene grafted with styrene, 2,4,6- tribromophenyl acrylate and acrylonitrile; a copolymer of styrene, acrylonitrile and 2,4,6- tribromophenyl methacrylate or 2,3,5,6-tetrabromo-4-methylphenyl methacrylate and butadiene-styrene rubber grafted with styrene and acrylonitrile; or polybutadiene grafted with styrene and 2, 4, 6-tribromophenyl methacrylate.
Patent GB-1199643-A (GB)
Title: Improvements in and relating to the Tuning of Two-channel Radio Receivers
Inventor: SHELBY RUFUS FRANKLIN
IPC: H03J7/08
Filed: 1967-09-04
Abstract: 1,199,643. Automatic frequency control. PHILCO FORD CORP. 4 Sept., 1967 [8 Sept., 1966], No. 40342/67. Heading H3A. A television receiver including automatic frequency control by means of a frequency discriminator, is characterized in that the discriminator responds to the amplitudemodulated video I.F. signal but not to the frequency modulated audio signal. In Fig. 1 the I.F. amplifier 6 is coupled to tuned circuits 10 and 12 tuned above and below the required intermediate frequency; these circuits are coupled by detection diodes 20, 30 to transistors 24, 34 the collectors of which are coupled through D.C. blocking capacitors 51 and 62 to rectifier circuits which supply voltages to the anode and cathode of a varactor diode 70 reverse biased by the potential divider 66, 69. The varactor diode 70 is coupled to the local oscillator 4 to tune it to the required frequency. If the input to the discriminator is unmodulated in amplitude, the outputs of the transistors have only a direct current component which is blocked by the capacitors 51 and 62, so the receiver will not lock on to the audio carrier but will lock to the video carrier. An indicator such as meter 73 indicates when an amplitude modulated carrier is being received.
Patent GB-1201051-A (GB)
Title: Nuclear reactor fuel element assemblies
Inventor: MARTIN DUDLEY JAMES VICTOR
IPC: G21C3/326
Filed: 1967-09-04
Abstract: 1,201,051. Fuel elements. UNITED KING- DOM ATOMIC ENERGY AUTHORITY. 2 Aug., 1968 [4 Sept., 1967], No. 40365/67. Heading G6C. A fuel element assembly comprises a cluster of spaced, parallel, sheathed fuel rods having substantially uniform abundance of fissile isotope per unit volume, the rods being arranged in inner and outer groups with the rods of the outer group being tubular for conducting coolant flow and of greater girth than the rods of the inner group which are solid. As shown, a fuel element assembly 4 comprises an outer group of tubular rods 5a and an inner group of solid rods 5b, all of uranium oxide equally enriched in the fissile isotope U 235  to 1À4 C 0  and sheathed in Zr alloy. The assembly is located in a tube 1 for conducting light water coolant and extending through a calandria tube 2 of a core tank containing heavy water moderator 3. The tubular fuel rods may be of greater mass than the solid fuel rods but where they are of substantially the same mass, they present a lesser thickness of material to thermalized neutrons from the moderator so that more thermalized neutrons enter the remaining rods of the cluster than would be the case for solid rods.
Patent GB-1432989-A (GB)
Title: Field effect transistors
IPC: H01L29/00
Filed: 1973-08-28
Abstract: 1432989 Semi-conductor devices SONY CORP 28 Aug 1973 [28 Aug 1972] 40439/73 Heading H1K A resistive layer 15, e.g. of polycrystalline silicon, overlies the gate oxide 14 of an IGFET and is contacted by a gate electrode 16 spaced from the channel region 21 of the device and located over on the source region 12, preferably over relatively thick oxide 17. The resistive layer 15 is capacitively coupled to the source and drain regions 12, 13 at its respective ends, and the potential gradient consequently induced along the length of the layer 15 ensures a linear potential drop along the channel region 21. The configuration illustrated allows the drain region 13 to be relatively small, reducing the drain-substrate capacitance. A detailed description is also given of a similar IGFET having two gate electrodes at opposite ends of a resistive layer overlying the gate oxide, this being the subject-matter of copending Specification 1,431,199.
Patent GB-1403089-A (GB)
Title: Cap for use with a duct terminator
IPC: F16L5/00
Filed: 1972-08-31
Abstract: 1403089 Caps for duct terminators FORMEX MFG INC 31 Aug 1972 40490/72 Headings E1G and E1W [Also in Division F2] A cap 130, having a cylindrical skirt 132, radially extending locking lugs 134 at one end of the skirt and a domed end wall 140 at the other, is provided on the end wall with a boss 142 adapted to receive a wrench. The cap serves as a releasable closure for a duct terminator arrangement in a concrete switch room wall. The duct terminator module is provided with locking lugs corresponding to those on the cap but may otherwise be as described and claimed in Specification 1315835.
Patent GB-1462200-A (GB)
Title: Insulation system for winding of electric rotating machines and process of producing thereof
IPC: C08G73/06
Filed: 1974-09-17
Abstract: 1462200 Insulation for dynamo-electric machine windings HITACHI Ltd 17 Sept 1974 [19 Sept 1973] 40522/74 Heading H2A A winding suitable for use in electric rotating machines insulated with a sheet-form insulating material (I) having thermal resistance of at least class H and a resin of general formula  in which R is the residue after removal of NCO groups of a polyisocyanate, R<SP>1</SP> is the residue after removal of epoxy groups of a polyepoxide, p is an integer of at least 2 and m and r are integers of at least 1, and containing as repeating unit at least 2 isocyanurate rings directly bonded to one another through the isocyanate residue and at least 2 oxazolidone rings directly bonded to each other through the epoxy residue. I may be a polyimide, polyamideimide, aromatic polyamide or glass cloth. II may be formed by impregnating a winding conductor, wrapped with I, with a varnish consisting of (a) 1 equivalent of a polyepoxide, (b) 2-3À5 equivalents of a polyfunctional isocyanate and 0À01-10% by wt. (based on epoxide plus isocyanate) of a catalyst (III) which forms isocyanurate and oxazolidone rings, and then heating to form the cured resin of Formula II. Alternatively the insulating material may first be impregnated with a solution of III followed by the epoxide and isocyanate. III may be an imidazole, e.g. 2-phenyl- or 2-ethyl-4-methyl-imidazole.
Patent GB-1058178-A (GB)
Title: Chuck for the external machining of hollow bodies having irregular internal contours
IPC: B23B31/18
Filed: 1964-10-07
Abstract: 1,058,178. Chucks. WERKZEUGMASCHINEN-FABRIK GILDEMEISTER & COMP., A.G. Oct. 7, 1964 [Oct. 11, 1963], No. 40975/64. Heading B3B. A chuck for the external machining of hollow workpieces having irregular internal contours, e.g. I.C. engine pistons, comprises a body 5, Figs. 1 and 2 (not shown), housing two hooklike gripping fingers 7 and 8 pivotably mounted in separate displaceable guide members 11 and 12. The fingers are provided with gripping lugs 13, 14 at one end and slots 15, 16 at the other ends. The slots are inclined at an angle to the chuck axis and are engaged by pins 17, 18 attached to a pendulum plate 20. The plate 20 and guide members are urged apart by a spring 24 to normally retain the fingers in the piston engaging position. The plate 20 carries a bolt 21 which projects through a kidney-shaped recess 22 in a connecting piece 23 attached to a draw bar 17. To locate a piston 5 in the chuck the draw bar is moved to the right which causes, by means of the pendulum plate and slots, anticlockwise movement of the fingers 7 and 8 (Fig. 1, not shown). The piston is then placed over the fingers and the draw bar moved to the left which permits the lugs 13 of the finger to engage the internal surface of the piston under the pressure of the spring 24. Due to the relative movement between the pendulum plate 20 and guide members 11 and 12 and the oblique positions of the slots the fingers are held in the engaging position and subsequently the piston 5 is drawn axially on to its centring collar 4. The permissible separate movement of the guide members and the swivelling action of the pendulum plate permit variation in axial location of the fingers in the workpiece.
Patent GB-1521699-A (GB)
Title: Thermally insulating laminated board
IPC: E04D3/35
Filed: 1975-10-08
Abstract: 1521699 Laminates UNITED STATES MINERAL PRODUCTS CO 8 Oct 1975 [3 March 1975 25 Oct 1975] 41229/75 Heading B5N A thermally insulating laminate comprising a rigid closed cell foam slab, the cells of which contain a fluorocarbon gas and two facing sheets, at least one of which is of paper or fabric adhered to opposed surfaces of the slab is made by interposing liquid polyurethane- or polyisocyanurate-forming reactants including a fluorocarbon blowing agent at a temperature of about 23 C. between the sheets at a temperature of from 25 to 35 C. in a process area at a temperature of from 20 to 24 C., the reactants having sufficiently long cream time and low enough viscosity to impregnate the porous sheets prior to foaming, allowing thereactants to foam to produce the slab which is allowed to rise to at least 90% of full rise before applying external heat, and curing the laminate at a temperature not greater than 48.9 to 65À6 C. The fabric may be rag paper, the foaming agent monochlorotrifluoromethane or dichlorodifluoromethane and the other facing sheet perlite board, mineral fibreboard, fibreglass board or a metal panel. In the embodiment shown in Fig. 2, the paper a fabric layer 1 is covered with a glass fibre net work 5 and a copper or aluminium foil 4.
Patent GB-1277284-A (GB)
Title: Improvements in or relating to facsimile apparatus
IPC: H04N1/08
Filed: 1969-08-19
Abstract: 1277284 Facsimile systems GRAPHIC SCIENCES Inc. 19 Aug 1969 [19 Aug 1968] 41418/69 Heading H4F A drum type facsimile transceiver is provided with an "easy loading" system for loading and unloading documents and reproducing sheets on to the drum comprising a pair of cables wound in grooves at opposite ends of the drum and joined by cross-bars which hold documents against the drum, and means for engaging the cables to withdraw them from the drum to allow the document to be placed on or removed from the cross-bands. A document or sheet is held against the surface of the drum 14 by means of two cross-bands (18) secured to the cables 20 wound in grooves 108 in opposite ends of the drum. The crossbands are attracted towards the surface of the drum by means of permanent magnets embedded therein. One end of each cable 20 is secured to the drum and the other end is terminated by means of a spring-loaded pin 102 which hooks into an appropriately shaped notch (100) in the drum rim. The drum has an inner hub member 70, secured to a driving-shaft 73, and during transmission and reception the inner hub member 70 is locked to the outer hub member 72 of the drum by means of a spring-loaded plunger 82. A drawer 12 is positioned below the drum and carries a pair of pivoted arms 110 terminating in bifurcated hooks 102 and a cam surface 94. When the drum is to be loaded or unloaded the inner hub member 70 is locked in the angular position illustrated by releasing a solenoid 36 the armature 38 of which enters and locks in a recess 124 in the inner hub member. The drawer 40 is then pulled out, causing a wheel 92 on a lifter 90 to ride up the cam surface 94 on the drawer so that a projection 95 on the upper end of the lifter raises the plunger 82 to unlock the outer hub member 72. Simultaneously the arms 110 are lifted by means of pins 116 which slide along shaped slots 118 in cam-plates 120 secured to the main assembly so that the hooks engage pins 102 and unhook them from the notches (100) in the drum. The cables and cross-bands are then unwound from the drum by further outward movement of the drawer, the drum rotating relative to its inner hub against the force of a return spring 78. The sheet is then positioned on the cross-bands and the drawer returned so that the sequence of operations is reversed resulting in the cables being rewound and the sheet being wrapped around the drum which is rotated by the returnspring 78. A transducing head 24 is traversed along the length of the drum by means of a lead screw (28) and includes a photo-electric pickup and a pyrographic reproducing stylus 52. The head 24 also carries a normally closed microswitch 32 over which the breaking solenoid 36 is energized and an adjustable stop 34 is provided so that when the end of the document is reached the microswitch is actuated to terminate the transmission and to de-energize the solenoid to arrest the rotation of the drum.
Patent GB-946502-A (GB)
Title: Improvements in or relating to groove-and-tongue joints between prefabricated concrete slabs
IPC: E01C5/00
Filed: 1961-11-21
Abstract: 946,502. Concrete slabs; releasable fastenings. P. KEMNA, and K. ANDREAE, [trading as KEMNA BAU KOMM.-GES.]. Nov. 21, 1961 [Nov. 21, 1960], No. 41658/61. Headings EIB and E2A. Concrete road surfacing slabs are joined by movable tongues 7 contained in metal casings embedded in one slab and which can be locked by screws 12 so that they project into grooves 5 in corresponding positions in an adjacent slab. The tongues 7, which turn in grooves 6 in the casings, have a cylindrical upper surface formed with a flattened edge 11 and with grooves 10 for manipulating the tongues. In the retracted position at least one groove 10 projects from the casing. Abutments such as 14 mate the casings with the iron reinforcement and with the shuttering used in the production of the concrete slab.
Patent GB-1535642-A (GB)
Title: Pitot pumps
IPC: F04D1/12
Filed: 1977-10-07
Abstract: 1535642 Lubricating KOBE Inc 7 Oct 1977 41911/77 Heading F2A The lubricant for the bearings 28 of a pitot pump is cooled by blowing air over heat exchange means (e.g. fins 74) located on the outer surface of the lubricant reservoir 22. The air is forced over the heat exchange means by adapting the pump so that air is drawn via ports 68 from the atmosphere into the housing containing the rotatable casing, within which there is the fixed pitot tube 18, by vanes 66 on the rotatable casing. The air is then forced from the housing via ports 70 over the heat exchange means 74.
Patent GB-1146730-A (GB)
Title: Improvements in the cutting or blanking of sheet material
IPC: B26F1/44
Filed: 1966-09-20
Abstract: 1,146,730. Cutting-out presses. E. V. HENC. 20 Sept., 1966, No. 41936/66. Heading B4B. [Also in Division B3] A cutting blade B, Figs. 1 and 4, for a die press comprises a flat bar having a shank portion 41 and an edge deformed to provide a plurality of notches and protrusions on each side forming a corrugated-like edge which when ground at an angle to the medial plane of the shank portion defines a cutting edge 43 and is characterized by a plurality of side by side teeth 50, each tooth having an arcuate scallop-like cutting edge portion 52 terminating at each end in a sharp point 51, each tooth having a flat tapered side face portion 54 on one side and an indenture 56 on the opposite side having a tapered side face portion 58 at the top thereof, alternate teeth having the indenture in one side face and the teeth between alternate teeth having the indenture in the opposite side face. The shank portion 41 is provided with a plurality of keyhole slots 59. A die press 10, Fig. 12, incorporating the blade B comprises a resilient anvil 14 mounted on a stationary support 12 and a platen 16 having means including a member 24 for mounting the blade B, the platen being operable by an hydraulic actuator H. Resilient strippers 40 are provided to strip the cut-out blank and the waste from the cutting edge of the blade.
Patent GB-975663-A (GB)
Title: Improvements in and relating to the manufacture of ceramic or other articles
IPC: B28B1/52
Filed: 1961-11-24
Abstract: 975,663. Filter press plates. J. A. JOHNSON. Dec. 21, 1962 [Nov. 24,1961], No. 42025/61. Heading B1D. At least some of the faces of the trays in a filter press are fitted with contoured grids, the grids having apertures covered by a filter cloth. Filter cakes, e.g. of ceramic material, formed between the trays, are thus formed with inherent lines of weakness along which they are easily separatable into a number of blanks or billets. All trays in the press may have a grid on one face only, or alternate trays may have grids on both faces, or all trays may have a grid of half-depth fitted on both faces. In one embodiment, Fig. 1, filter trays 10, having thicker frame portions 13, are fitted on one face with contoured grids 12, the grid defining a number of apertures 15, Fig. 4. Under filtering pressure, cloth 11 takes up the contour of the grid so that the filter cake is similarly contoured. A wire mesh or perforated grid may be interposed between the faces of the press tray and the contoured grid of the invention. Specifications 795,167, 820,668, 842,669, 842,795, 883,595, 888,340, 927,697, 937,669 and 975,662 are referred to.
Patent GB-1456054-A (GB)
Title: Crane for ships
IPC: B66C13/10
Filed: 1974-09-27
Abstract: 1456054 Overhead cranes on ships FREDRIKSSTAD MEK VERKSTED AS 27 Sept 1974 42107/74 Heading B8B A crane for a ship comprises a fixed horizontal crane beam 2 shown mounted transversely of the ship (represented by parts 7, 7 of the superstructure which has access openings (not shown) on either side) with a cantilever crane beam 8 at each end pivotable upwardly into an inoperative position, Fig. 2 (not shown). A load carriage 20 can move along the crane beams 2, 8 under the action of a motor 28 and hauling wire 25 and has a hoisting wire 30 supporting a hook 40 in a sling 38 operated by a winch 35, 36. The wires 25, 30 have loops extending out to pulleys 26, 31, 33 at the respective outer ends of the beams 8 and run beneath guiding pulleys 24 at the pivoting ones 10 of the beams 8. The carriage 20 can thus travel on the beam 2 independently of the angular position of one or both cantilever beams 8.