baber/WOPTO huggingface dataset:
Patent GB-1076186-A (GB)
Title: Improvements in or relating to digital computing circuits
IPC: G06F7/52
Filed: 1963-11-01
Abstract: 1,076,186. Transistor binary circuits. GENERAL PRECISION Inc. Nov. 1, 1963 [Nov. 1, 1962], No. 43318/63. Heading H3T. [Also in Division G4] A binary adder using threshold logic transistor circuits comprises, as shown, three transistor stages 38-40, each receiving five inputs, each input of which may be either at earth or at - 10V. The bias resistors 69-71 are chosen so that in the absence of feedback connections 43-45 transistor 38 would conduct when one or more of inputs A-E were at the - 10V level, 39 when two or more, and 40 when 4 or more were at that level. The collector potentials of 38-40 rise from -10V to earth when these thresholds are exceeded, except that conduction of 39 increases via 43 the positive bias applied to 38 so that this becomes a threshold - 3 gate, conduction of 40 increases it further via 44 to make it a threshold-5 gate, and also increases the bias on 39 to prevent conduction even if all five inputs are at the - 10V level. The extension to adders receiving more than five inputs is referred to.
Patent GB-952718-A (GB)
Title: Process for producing acetaldehyde
IPC: C07C45/34
Filed: 1962-11-16
Abstract: Acetaldehyde is produced by reacting ethylene with oxygen and an anhydrous C1 to C4 aliphatic alcohol in the presence of a catalyst comprising a salt of palladium, rhodium or platinum and a salt of copper, zinc, chromium, manganese, iron, cobalt, or nickel at a temperature of from 50 DEG  to 150 DEG C. and at a pressure of from 1 to 100 atmospheres.  Either pure oxygen, or air may be used. The acetaldehyde is recovered from the reaction mixture by distillation.
Patent GB-1466903-A (GB)
Title: Self propelled rotary lawn mower
IPC: A01D34/47
Filed: 1974-10-07
Abstract: 1466903 Self-propelled lawn mower DAHLMANS KLIPPO AB 7 Oct 1974 [10 Oct 1973] 43410/74 Heading A1F A self-propelled lawn mower whose motor 15, Fig. 2, drives both its cutter and its drive wheels comprises a motor output shaft 16 releasably connected to an input shaft 17 of a belt drive 18 whose output member is a pulley 28, Fig. 5, integral with one of the drive wheels 11. The belt and pulley are contained within an elongate housing 20 which is closed by the wheel and a top lid (not shown). The wheel axles 12 are mounted on linkages 13, 14 which are pivoted to the mower's body for height of cut adjustment. The belt 18 runs over tension adjusting pulleys 31, (34), Fig. 4 (not shown) the latter of which is brought into and out of engagement by an over-centre toggle pedal such that drive can or cannot be transmitted to the pulley 28.
Patent GB-1394689-A (GB)
Title: Synthetic film materials
IPC: C08J7/043
Filed: 1972-09-20
Abstract: 1394689 Melamine coated polyester films OZALID GROUP HOLDINGS Ltd and R LANDAU 31 Oct 1973 [20 Sept 1972] 43448/ 72 Heading B2E [Also in Division G2] A self-supporting polyester film which has not been pretreated, has an adherent resinous coating containing, as a binder, a curable urea formaldehyde or melamine formaldehyde resin and resorcinol or a resorcinol derivative selected from diresorcinol and alkyl esters of carboxylic acids of resorcinol or diresorcinol, the resorcinol or resorcinol derivative being present in an amount of 20% by weight of the binder. Fillers such as kaolin, clay, silica, TiO 2 , ZnO and CaCO 3  may be present. There may also be present a light sensitive diazonium compound (2, 5 dibutoxy-4-morpholino benzene diazonium fluoroborate) a coupler and an acid inhibitor, in which case there must be present polyvinyl acetate, optionally carboxylated or partially hydrolised, to promote permeation of ammonium vapour which develops the diazonium compound.
Patent GB-1279121-A (GB)
Title: Improvements in drying apparatus
Inventor: SMITH STANLEY GEORGE
IPC: B29C48/76
Filed: 1969-09-05
Abstract: 1279121 Press drying E I DU PONT DE NEMOURS & CO 5 Sept 1969 [13 Sept 1968] 44158/69 Heading F4G In an open-barrel press dryer part of which comprises a water-vaporizing section, comprising a screw 50 positioned coaxially within an open barrel 60, the free volume between the screw and barrel in this section being from 8 to 18% of the total available barrel volume. The barrel has water outlets in the form of longitudinal slots, and the diameter of the screw at the discharge end is larger than at the input end. The water vaporizing section is immediately preceded by a dewatering section having a greater proportion of free volume to total available volume than said water-vaporizing section. This equipment is particularly suitable for drying EPDM-type elastomers and improved drying of natural rubber and styrene-butadiene polymers can be obtained by its use.
Patent GB-1262769-A (GB)
Title: Rotary batch mixer
Inventor: PRASCHAK GERALD H
IPC: B01F7/00
Filed: 1969-09-11
Abstract: 1,262,769. Mixer. PRASCHAK MACHINE CO. Inc. 11 Sept., 1969 [22 Oct., 1968], No. 44933/69. Heading B1C. Apparatus suitable for mixing cementitious materials comprises top and bottom shells 20, 18 forming a mixing chamber, the top shell being provided with inlets 23, (24) for introduction of materials to be mixed, an impeller 25 for moving material deposited in the chamber outwardly and upwardly along the wall of the bottom shell, curved baffles 29 mounted inside the top shell to split the material moved up from the bottom shell into streams directed towards the centre of the mixing chamber in opposed intermixing relation with one another, and means for discharging mixed material from the chamber e.g. pneumatically-operated door 34. The baffles may be notched as shown at 30 to permit the blades 28 of the impeller to pass therethrough.
Patent GB-1482007-A (GB)
Title: Fire-retarding wall structures
IPC: E04B2/78
Filed: 1974-10-17
Abstract: 1482007 Fire-retarding wall A BERG 17 Oct 1974 [19 Oct 1973] 44953/74 Heading E1W A fire retarding wall structure comprises a plurality of wall panels each of which comprises two facing panels 7, 8 between which are one or more fire retarding layers 9, 10, the vertical edges of the facing panels being formed into flanges 11 and having slots which engage hooks on vertical supports 4 between each adjacent pair of panels, the gaps being masked by cover strips 14. The supports are clamped between a floor and a ceiling by clamping elements at least one of which is resiliently loaded. The cover strips 14 also engage hooks on the vertical supports and are filled with fire retarding material 16. The upper edge of each wall panel is provided with bearing surfaces for a false ceiling. The adjacent edges of wall panels and/or supports are covered with a material which generates foam when heated in order to seal any gaps.
Patent GB-1155295-A (GB)
Title: Sliding Clasp Fasteners.
Inventor: WALDES GEORGE
IPC: A44B19/40
Filed: 1966-10-08
Abstract: 1,155,295. Sliding clasp fasteners. WALDES KOHINOOR, Inc., 8 Oct., 1966, No. 45071/66. Heading E2S. A sliding clasp fastener element comprises a coupling head portion 24 having a coupling protrusion 26 on, and a complementary protrusion-receving recess in opposite faces thereof, respectively, and a shank portion 30 of lesser thickness than said coupling head portion and being separated from the latter by substantially right-angular, outwardly facing shoulders 34a, 34b and terminating outwardly in an attaching portion for affixing the element to a cord, said attaching portion having opposite surfaces 36a, 36b which are set back from the corresponding faces of the remainder of the shank portion whereby to accommodate an edge portion of a garment or other article to which said fastener element is to be sewn. As shown each setback area is traversed by a groove 38a, 38b. Each attaching portion has two legs 32a, 3b which are clamped about a cord through which the stitches pass to attach the cord and elements to a garment edge, the stitches passing through the grooves 38a, 3b &c. an altenative the elements are cast directly on to the cord when they are made of plastics material. Either of the set back areas accommodates the garment edges. The slider slides on the shank positions 30) and its wings engages the shoulders 34a, 34b. One of the set back areas can be omitted.
Patent GB-1172137-A (GB)
Title: Improvements in or relating to Piston Pumps
IPC: F04B1/14
Filed: 1967-10-04
Abstract: 1,172,137. Reciprocating pumps. ALFRED TEVES G.m.b.H. Oct.4, 1967 [Jan. 5, 1967], No.45247/67. Heading F1A. A swash plate pump of adjustable output comprises pistons 5 reciprocated in a stationary cylinder block by a rotating swash plate 2, the pistons having by-pass ports 17 controlled by axially adjustable rods 11, so that at the beginning of the delivery stroke, the delivery is by-passed from cylinders 7 via piston grooves 25, ports 17, and the piston bores to the swash plate chamber until ports 17 are closed by rods 11, delivery then taking place via delivery valves 9 to an outlet 10. Rods 11 pass through the inlet valves 8 of the cylinders, and are axially adjusted in the embodiment shown by rotation of a handwheel 12, which acts through gears 13 to rotate a shaft 14 on which a rod carrier 15 is threaded. In the Fig. 2 embodiment (not shown), the output is automatically adjusted by the delivery pressure acting on differential areas of a spring-loaded hollow shaft connected to the rod carrier, the spring- loading being adjustable.
Patent GB-1025422-A (GB)
Title: Copolyesters and the preparation thereof
IPC: C08G64/00
Filed: 1962-11-30
Abstract: Polymers containing carbonate and phosphonate linkages are made by condensing (a) an alkali metal diphenate, (b) phenyl phosphoric acid dichloride and (c) phosgene and/or a dichloroformate of a dihydric phenol; the diphenate being dissolved in water and the other reactants being dissolved in a water-immiscible organic liquid which is a solvent or swelling agent for the polymer.  The reaction mixture may also include thiophosgene, terephthaloyl chloride, isophthaloyl chloride, phthaloyl chloride, sebacyl chloride, adipyl chloride or 4:41-diphenylether dicarboxylic acid chloride. Condensation is effected in the presence of a quaternary ammonium, phosphonium or arsonium compound or a ternary sulphonium compound.  A large number of dihydric phenols are specified but the ones used in the examples are bisphenol A and a mixture of isomeric bis-(hydroxyphenyl)-methanes.  Some of the polymers are soluble in chlorinated aliphatic hydrocarbon, toluene, xylene, tetrahydrofurane and dioxane.  They are useful in the manufacture of films, threads and surface coatings.
Patent GB-1194879-A (GB)
Title: Improvements in Means for Separating Individual Fibers from a Fibrous Mass
IPC: C03B37/10
Filed: 1967-10-06
Abstract: 1,194,879. Pneumatic separation. GENERAL ELECTRIC CO. 6 Oct., 1967 [8 March, 1967], No. 45842/67. Heading B2H. Individual fibres are separated from a fibrous mass by passing a pulsating stream of gas upwardly through the mass in a separatory chamber and collecting at the top of the chamber the separated fibres which are entrained in the pulsating stream. The fibres may be alumina whiskers produced in a vapour phase growing process. A separatory chamber 1 has a bottom screen 2 for supporting the fibrous mass and a top screen 7 for collecting the separated fibres. A nozzle 3 at the end of a swivelling fitting 4 allows a pulsating compressed gas stream to be directed at different points through the fibrous mass. The chamber 1 has an enlarged spherical section 8 provided with projections 9 to facilitate separation. Separation is further facilitated by injecting non-pulsating gas streams, at a pressure slightly below the pulsed gas jet, through nozzles 12 which are directionally controlled, e.g. for producing vortices. The gas supply lines to the fitting 4 and to the nozzles 12 are each provided with a filter, a pressure control valve and a pressure gauge, the line to the fitting 4 including in addition a pulsing valve associated with a pulse controller. By varying the pressure of the gas supply the fibres collected on the screen 7 are classified according to size. If a resinous or metallic dispersion off the collected fibres is desired, particulate resin or metallic material may be injected in the rising suspended fibres through a nozzle 11. The separation may be batchwise or continuous.
Patent GB-1204678-A (GB)
Title: Improvements in or relating to apparatus for testing the condition of the surface layer of a workpiece
Inventor: UPTON VICTOR JOHN
IPC: G01N27/90
Filed: 1967-10-07
Abstract: 1,204,678. Electromagnetic tests. ROLLS-ROYCE Ltd. Oct.7, 1967, No.45980/67. Heading G1N. An eddycurrent probe, for testing gas turbine compressor-blades in situ, comprises:- wheels 90, 98, 99, 74 Fig. 2 which engage one surface of the blade and the rotational axes of which are perpendicular to the plane of the longitudinal axis of the blade; a wheel 68 which engages the other surface of the blade and a guide wheel 60 having a groove 62 which engages the blade edge to locate the prode whereby it can be moved in a path parallel to the leading or trailing edge of the blade. The wheels 98, 99 are mounted together with detector units 14 on respective carrier members 93, 94 which are pivotable about a spindle 95 and are spring-loaded to urge the wheels 98, 99 against the blade surface. The axes of the detector units are thus maintained in a constant orientation with respect to the blade surface. The spindle 95 is carried by a mounting block which is slidable in a long slot in the probe frame and has a spring-loaded ball 85 which engages in detent holes along the slot whereby the block is located with respect to the guide wheel 62. Thus in operation as the probe is moved parallel to the blade edge the detectors each scan a strip about ¢ in wide; the block 78 and hence the carrier members is then moved to its next position and adjacent strips are scanned and so on until the whole surface is tested. Electrical Circuits, Fig. 1.  The probe 13 has at least two detectors 14 each comprising windings 15, 16 which are inductively coupled through the workpiece and an indicator lamp 34. An oscillator 10 feeds detector 14 and a balance unit 21 (consisting of R.L. circuits not illustrated), and a comparator 25 produces an output representing the voltage differences between the reference voltage at the output 22 of the balance unit and the voltage at terminal 18 of the detector. Any unbalance voltage triggers a Schmidt trigger 31, even if only transient, which triggers a mono stable circuit 38 to operate the lamp 34. The unbalance is also indicated on meter 30.
Patent GB-1202383-A (GB)
Title: Apparatus for reproducing cassetted magnetic tapes
IPC: G11B15/68
Filed: 1967-10-10
Abstract: 1,202,383. Cassette players. STAAR DEVELOPMENT CO. S.A. 10 Oct., 1967 [11 Oct., 1966], No. 46282/67. Heading G5R. A magnetic tape cassette player 21 includes a unit 27 for selecting a particular recording on a cassetted tape, the unit having an area to receive a member 30 bearing a list of the recordings on the tape with each indication arranged opposite a corresponding selector push-button or key 28. The member may be a card or a cassette-container with a list on one or both sides and placed in a recess 29 in the selector. The selector 27 may be detachable from the player 21 and electrically connected to it by a cable, as in Specification 1,202,382.
Patent GB-1073575-A (GB)
Title: Automobile door latch
IPC: E05B65/32
Filed: 1964-11-13
Abstract: 1,073,575. Miscellaneous releasable fastenings. FERRO MANUFACTURING CO. Nov. 13, 1964 [Jan. 14, 1964] No. 46331/64. Heading E2A. A door latch comprises a support 10, a detent 40 associated with a latch bolt unit 13, a detent operating lever 16, a locking lever 15 for the detent, the detent-operating lever 16 including an operating element 69 for disengaging the detent from the latch bolt unit, the locking lever 15 being pivotally mounted on the support in spaced parallel relation to the pivotal axis of the detent operating lever 16, and having a first unlocking control element 54 and a first locking control element 56 thereon, the detent operating lever 16 having a second unlocking control element 63 and a second locking control element 65, the first and second unlocking control elements being mutually engageable and the first and second locking control elements being mutually engageable and actuations of the first and second locking and unlocking control elements causing movements of the locking lever 15 respectively to prevent and permit disengagement of the detent 40. As shown, the latchbolt unit comprises a forked latch bolt 18 engageable with a keeper pin having a head 22, which in conjunction with a bolt housing 24, affords an "anti-burst" feature. The latch bolt 18 is retained in engagement with the pin by a spring-loaded toothed member 32 which is controlled by a pawl 43 of the detent 40, arranged for "outside" operation through an arm 45, such operation being dependent upon the position of the "inside" lever combination 15, 16. The lever 16 is connected through a pivot 66 with an "inside" handle (not shown), by which the lever 16 may be operated to block or free the lever 15 which is operable by a key operated cam 52.
Patent GB-1320938-A (GB)
Title: Method and apparatus for injection moulding rubber
IPC: B29C37/02
Filed: 1970-09-30
Abstract: 1320938 Moulding rubber; footwear UNIROYAL Inc 30 Sept 1970 [3 Oct 1969] 46435/70 Heading B5A Rubber is moulded on to an article in a mould cavity defined by the article, side walls and a movable mould member opposite the article, and movable towards and away from the article and having a peripheral lip in sliding contact with the side walls and with a recess adjacent the lip on the side away from the article, by placing unvulcanized rubber in the cavity, spreading it against the article by means of the movable mould member so that escaping rubber at least partially fills the recess, vulcanizing the rubber and retracting the movable member to tear the rubber in the recess from the article. As shown, rubber is injected through inlet 14 to a cavity defined by side ring 12, sole plate 24 and lasted upper 22 to form a midsole 60 and foxing 62, rubber escaping past inclined peripheral surface 102, lip 101 into recesses 100. Portion 103 therein is torn off by retraction of plate 24 past inlet 16 through which a second rubber is injected. This is then spread against the first injected rubber to form outsole 68, inclined surface 102 pressing it against downwardly depending portion 107. Side rings 12 are retracted and the shoe removed, remaining flash being severed thereby or subsequently. The injections may be rubber of different types or colours.
Patent GB-1534187-A (GB)
Title: Knee-joint endoprostheses
IPC: A61F2/38
Filed: 1976-11-08
Abstract: 1534187 Knee joints SANITATSHAUS SCHUTT & GRUNDEI 8 Nov 1976 [6 Nov 1975] 46440/76 Heading A5R An implantable knee joint prosthesis comprises a tibial component 1 having a ridge which widens in the rearward direction, hollowed out bearing surfaces 12 which tapers from front to rear, and a cross shaft providing spigots 11 extending from each side of ridge 9, and a femoral component 2 having a pair of supporting pads 13 yoked together above said ridge 9 which diminish in width from front to rear to conform to bearing surfaces 12 when the joint is in the extended position, and guide grooves 15 which open upwardly at their rear ends whereby spigots 11 may be hooked into the open rear ends (15a) of grooves 15 during implantation, spigots 11 then engaging in grooves 15. In the fully extended position, the bottom of each spigot 11 engages the bottom of the respective groove 15. The free play between spigots 11 and guide grooves 15 in bent positions of the joint allows relative forwardrearward motion, e.g. 7mm, to prevent strain on the knee's muscular extensor apparatus. Due to the rearwardly widening ridge and rearwardly tapering pads 13 and surfaces 12 a limited turning movement of the components 1 and 2 is possible in bent positions.
Patent GB-1118597-A (GB)
Title: Process for uniting components of polybutene-(1)
IPC: C08J5/12
Filed: 1965-11-04
Abstract: 1,118,597. Seaming non-metallic sheet material. CHEMISCHE WERKE HœLS A.G. 4 Nov., 1965 [5 Nov., 1964; 5 Dec., 1964], No. 46723/65. Heading B5K. Components of polybutene-(1) are united by treating the components with a liquid hydrocarbon and pressing them together at temperatures of 50‹ to 100‹ C. Suitable hydrocarbons are paraffins, such as heptane, gasoline, diesel oil or paraffin oil; aromatics, such as benzene or xylene; cycloaliphatics, such as cyclohexane or isopropylcyclohexane; alkylaromatics, such as tetrapropylenebenzene or dodecylbenzene; or substituted hydrocarbons, such as carbon tetrachloride or chlorobenzene. Polymerizable hydrocarbons, e.g. styrene or α-methylstyrene, may be used. To achieve a more rapid polymerization, 0À001 to 1% of a radical-forming compound may be added to the polymerizable hydrocarbon, e.g. benzoyl peroxide, lauroyl peroxide, capryl peroxide, isopropyl percarbonate, p-menthane hydroperoxide, azoisobutyrodinitrile or azodivalerodinitrile. Sensitizers in amounts of 0À1- 1000% with reference to the radical-forming compound may be added to lower the treatment temperature, e.g. sulphites, thiosulphates, hydrazine, mercaptan, methanol, oxalic acid, polyhydric alcohols or ferrous sulphate. The liquid hydrocarbon may contain polybutene-(1) dissolved therein, e.g. a 5% solution of polybutene-(1) in heptane or benzene. The hydrocarbon may be applied by brushing on or by dipping the components to be united therein. Preferably, both components are treated and may be kept in the air from 1-10 minutes before being brought together so that a preliminary swelling of the adhesive surfaces takes place and excess solvent evaporates. Alternatively, only one component is treated with the hydrocarbon. The solvent is preferably heated, e.g. to boiling point. A pressure of 5-20 atmospheres gauge is applied to the components. The components may be pipes, sheets, plates or films.
Patent GB-1112360-A (GB)
Title: Process for the manufacture of rubber stocks
IPC: C08J5/10
Filed: 1965-07-29
Abstract: A rubber stock for the manufacture of rubber goods containing linear polyester fibrous material as reinforcement contains a dimer or polymer of a polyfunctional isocyanate containing a uretidine-dione ring of the formula <FORM:1112360/C3/1> The composition may be based on natural rubber, GRS, or a mixture and may contain conventional curatives etc.  Suitable uretidinediones include, N,N1-bis-[3-isocyanato-p-tolyl] -2,4 - uretidine - dione and N,N1 - bis - [3 - iso-cyanato - 4 - methoxyphenyl] - 2,4 - uretidinedione.ALSO:A linear polyester fibrous material has coated thereon a composition comprising unvulcanised, vulcanisable, natural or synthetic rubber and a dimer or polymer of a polyfunctional isocyanate containing a uretidinedione ring of formula <FORM:1112360/D1-D2/1> Suitable compounds are N, N1-bis-[3-isocyanato - p - tolyl] - and - [3 - isocyanato - 4 - methoxyphenyl]-2, 4-uretidine-dione.
Patent GB-989326-A (GB)
Title: Improvements in or relating to transistor oscillator circuits
Inventor: LEEDER HARRY ALOYSIUS
IPC: H03K3/28
Filed: 1963-11-27
Abstract: 989,326. Visible signalling-apparatus. R. E. DIETZ CO. Nov. 27, 1963, No. 46900/63. Heading G4F. [Also in Division H3] In the lamp-flashing circuit illustrated, closure of switch 13 causes capacitor 20 to charge through resistor 18 and lamp load 16, the emitter current increasing at the same time until relay 21 is energized to close contacts 19 and cause lamps 16 to be lit, the capacitor 20 thereupon discharging through resistor 18 and contacts 19 until the emitter current is no longer sufficient to maintain relay 21 energized, whereupon contacts 19 open and the cycle is repeated.