baber/WOPTO huggingface dataset:
Patent GB-1114050-A (GB)
Title: Overload protection arrangement in a multi-stage transistorised amplifier
IPC: H04B15/02
Filed: 1965-12-31
Abstract: 1,114,050. Transistor amplifying circuits. TELEFUNKEN PATENTVERWERTONGS G.m.b.H. 31 Dec., 1965 [23 Jan., 1965], No. 55398/65. Headings H3T and H4R. A multistage transistor amplifier is protected against surges at its input or output by means of diodes D 1 , D 5  of low barrier-layer capacitance, the diode D 1  being connected between the base of the input transistor TS 1  and the earth line and the diode D 5  between the collector of the output transistor TS 2  and earth line, both diodes being biased in the non-conductive direction. In addition, there is connected across the second diode a further diode D 7  of low barrier-layer capacitance in series with, but opposition to, a voltage stabilizing e.g. Zener diode D 6  so poled as to be biased in the backward direction. The arrangement is more particularly intended for use with carrier frequency line amplifiers operated by means of D.C. sent over the line (Fig. 1, not shown), in which case protection may be improved by dividing any equalization into two networks VE, NE connected respectively before and after the amplifier.
Patent GB-1360669-A (GB)
Title: Stable polyacrylonitrile spinning solutions
IPC: C08K5/36
Filed: 1971-12-01
Abstract: 1360669 Acrylonitrile polymer spinning solutions BAYER AG 1 Dec 1971 [5 Dec 1970] 55692/71 Heading C3P A spinning solution of an acrylonitrile polymer having an X-ray crystalline component (according to the Hendus method) of more than 28%, a K value (according to Fikentscher) of more than 80 and a narrow molecular weight distribution characterized by an inhomogeneity factor (according to Vollmert) of less than 0À2, dissolved in ethylene glycol carbonate and/or dimethyl formamide is stabilized against localized swellings or gelation and against discolouration by inclusion therein of from 0À1 to 5%, based on the weight of polymer, of a compound containing an oxidizable sulphur atom. (The acrylonitrile polymers having the stated characteristics and their preparation are described in Specification 1,348,420.) Suitable stabilizers indude alkyl, aryl and hydroxyalkyl mercaptans, mercapto group-containing acids and esters, thioethers, sulphoxides, sulphinic acids and their salts, and phenothiazine.
Patent GB-1488268-A (GB)
Title: Indicating device
IPC: F16D66/00
Filed: 1974-12-30
Abstract: 1488268 Counting apparatus SPECTROL ELECTRONICS CORP 30 Dec 1974 [8 May 1974] 56045/74 Heading G4D [Also in Division F2] A control knob 20, e.g. for a variable resistor, comprises an indicator dial 16 secured to a shaft 22 rotatable by the knob to show its angular position, and a brake having a first position in which the knob is freely rotatable, a second position in which the knob is stiff to turn, to prevent a shift in setting due to vibration or shock, and a third position in which the knob is locked against rotation. The dial 16 is journalled on a fixed member 14 and carries indicia on a surface 17. The dial 16 and knob 20 are secured to the shaft 22 by a set screw (not shown) in a threaded hole 24. A second dial 18 carries indicia which appear in succession in a window in a cover 34 to indicate the number of complete revolutions of the shaft 22. A transfer gear 36 connects the dial 18 to the dial 16 in known manner once per revolution of the dial 16. The brake comprises an annular member 27 having an operating lever 26 carrying a knob 28. When the lever 26 is moved to said second position, a cam 40 on the member 27 presses a brake member 44 radially outwardly against an inner drum surface of the dial 16 to render the knob 20 stiff to turn. When the lever is moved to the third position, a cam 38 on the member 27 presses a second brake member 42 against the drum surface, the brake member 44 continuing in engagement, so that the knob 20 and dial 16 are locked against rotation.
Patent GB-1138099-A (GB)
Title: A method and a machine for splitting untanned leather, hides and the like
IPC: C14B1/14
Filed: 1967-12-12
Abstract: 1,138,099. Splitting-machines. MACHINENFABRIK MOENUS A.G. 12 Dec., 1967 [7 Oct., 1967], No. 56425/67. Heading B4B. A machine for splitting hides and untanned leather comprises an adjustable band knife 16 to which the material is fed by means of a sectional roller 6 which is driven by a rubberfaced roller 7 in such a way that the feed is varied over the transverse width of the material. The roller 6 comprises a plurality of annular discs which are resiliently mounted. The roller 7 comprises three sections 24, 25 and 26, the sections 24, 25 being driven at the same peripheral speed by sprockets 30, 31 and the section 26 being driven at a lower peripheral speed than the sections 24, 25 by a sprocket 28. The rubber facing of the section 26 is preferably of softer material than that of the sections 24, 25. The height of the roller 7 is adjustable by means of a hand-driven eccentric (8), Fig. 1 (not shown). The height of the shaping roller 19 is adjustable by means of hand wheels (13), Fig. 1 (not shown).
Patent GB-1243545-A (GB)
Title: Device for receiving coded pulses
IPC: H03K5/01
Filed: 1968-11-29
Abstract: 1,243,545. Telegraphy. C.I.T.-COMPAGNIE INDUSTRIELLE DES TELECOMMUNICATIONS. 29 Nov., 1968 [22 Dec., 1967], No. 56916/68. Heading H4P. Received serial n-bit code combinations in which each bit has a duration d are passed to a buffer store comprising n bi-stable or monostable circuits which store the bits for a duration greater than d. In a first embodiment, Fig. 1, polar 5-bit Start-Stop signals received on LL are presented in unipolar form at output L of receiver R. The receiver also provides serial bit-rate centrebit pulses c, Fig. 2, at the output of monostable MM1, and bit-rate pulses sequentially on output P1-P5, e-j. If the potential on line L during the first bit is not zero, bi-stable MB1 is set when MM1 pulses. If the second bit potential is not zero MB2 is set, and so on. Bi-stable MB1 is reset at the end of pulse P2, MB2 at the end of P3 &c. Bi-stable MB5 is reset by monostable MM2 which is triggered by pulse P4. Consequently, each bi-stable, if set, remains set for a duration twice that of a received bit, as indicated at m-q. In a modification of Fig. 1, indicated in broken line, the bi-stables are not reset until the occurrence of pulse P0. By use of diodes D1-D5 transistor T turns on only when a particular code combination is stored on MB1-MB5. A further embodiment, Fig. 3 (not shown), employs monostables in place of bi-stables MB1-MB5, each with an astable time of twice the bit duration. In a modification of Fig. 3 the serial pulses from MM1 are not used.
Patent GB-1342810-A (GB)
Title: Process for the preparation of cyclic ketones
IPC: C07C45/67
Filed: 1971-12-09
Abstract: 1342810 Cyclopentenones and cyclopentanones FIRMENICH SA 9 Dec 1971 [9 Dec 1970 12 Nov 1971] 57189/71 Heading C2C Cyclopentenones of Formula I (in which R<SP>3</SP> is alkyl, alkenyl or alkynyl of up to 6 carbon atoms and R<SP>4</SP> is H or C 1-6  alkyl) are prepared by treating a compound of Formula II (in which X is halogen) with an organic or inorganic base or an alkali metal salt acting as a base under the reacting conditions. Compounds I may be converted, to compounds of Formula III (in which R is C 1-6  alkyl, n is 0, 1, 3 or 4, R<SP>1</SP> is C 1-5  alkylidene and the group contains not more than 6 carbon atoms) by reacting a compound I in which R<SP>3</SP> is the group -(CH 2 ) n -CH#R<SP>2</SP> (in which R<SP>2</SP> is a C 1-5  alkylidyne group and the total number of C atoms in the group R<SP>3</SP> is not more than 6) with a dialkyl malonate in the presence of a basic catalyst, hydrolysing and then decarboxylating the dialkyl 2-alkynyl-3-oxocyclopentyl malonate thus obtained, esterifying the resulting 2- alkynyl - 3 - oxo - cyclopentyl acetic acid to form a C 1-6  alkyl ester, and partially hydrogenating the ester to give the compound III. Alternatively, the above C 1-6  alkyl ester may be formed without the esterification step by using an alkyl tetrahydropyranyl malonate instead of the dialkyl malonate and hydrolysing and decarboxylating the intermediate alkyl tetrahydropyranyl 2 - alkynyl - 3 - oxocyclopentyl acetate. Starting materials of Formula II are prepared by reacting a 4-R<SP>4</SP>-cyclohexane-1,3-dione with a halide R<SP>3</SP>Y (in which Y is halogen) and treat ing the resulting 2-R<SP>3</SP>-4-R<SP>4</SP>-cyclohexane-1,3- dione with a halogenating agent.
Patent GB-1186289-A (GB)
Title: Improvements in or relating to Double Chain Scraper Conveyors.
IPC: B65G19/28
Filed: 1968-12-04
Abstract: 1,186,289. Endless conveyers. GEBR. EICKHOFF. MASCHINENFABRIK. U. EISENGIESSEREI m.b.H. 4 Dec., 1968 [6 Dec., 1967], No. 57451/68. Heading B8A. In a double chain scraper conveyer for use in mines, m which the material is conveyed in the lower run of the conveyer, the face side of the conveyer sections 5 are open to the face and the chain 7 on that side is guided by a plurality of spaced guides 8 arranged at the junctions of the sections. The goaf side chain is guided by conventional continuous guides 6 which overhang the chain and the scrapers 13 are so spaced along the chains 7 that the sag of the face side chain between the guides 8 is insufficient to allow the chain to be forced out of the guides when the conveyer is moved towards the face. Supports 10 for a mining machine (3) Fig. 1 (not shown) are shaped as plough-shares to guide the material on to the conveyer and rest on forward extensions of the base of the conveyer sections.
Patent GB-1171800-A (GB)
Title: Method of and Apparatus for Determination and Adjustment of the Optimum Dose of Coagulation Agents in Coagulation Processes.
Inventor: DRACKA OLDRICH
IPC: G01N15/06
Filed: 1967-12-28
Abstract: 1,171,800. Filtering and settling; mixing flowing liquids. CESKOSLOVENSKA AKADEMIE VED. 28 Dec., 1967 [6 Jan., 1967], No. 58785/67. Headings B1C and BID. [Also in Divisions Cl and G3] In Fig. 2a, liquid treated with a coagulating agent is supplied through a conduit 7 to zone A of a circular tank 1 and coagulated particles form a sludge blanket in a zone B. Above zone B clarified liquid C overflows into an outlet conduit 8 and sludge spilling over into a sedimentation zone D passes off through a conduit 9. The streaming potential derived from electrodes 2, 3 on each side of the sludge blanket in the direction of flow periodically controls the dosage of coagulating agent to maintain optimum conditions. Control in dependence on conductivity, rate of flow and/or concentration may be added. Applications involving a sedimentation tank or a solid filter bed with electrodes one above the other are described.
Patent GB-1397328-A (GB)
Title: Longitudinally extendable foundation pile
IPC: E02D5/52
Filed: 1972-12-28
Abstract: 1397328 Foundation Piles TEXACO DEVELOPMENT CORP 28 Dec 1972 [19 Jan 1972] 59816/72 Heading E1H [Also in Division F2]  A pile comprises a plurality of non-metallic e.g. concrete, sections connected together by interlocking connectors 19, 30 secured together by one or more keys, a protective barrier surrounding and enclosing the connectors to prevent exposure of the latter to, e.g. corrosion by sea water or spray. The connectors, as shown, comprise an annular flange 32 cooperable with an annular slot formed by further annular flanges 23a, 24a. The rotational alignment of the flanges is fixed by a tooth 49 and groove 48. The keys take the form of pins engaging aligned holes 33, 34 in the flanges 32, 23a, 24a. A sleeve 41 on the upper pile section may be lowered to cover the connection, and is provided with an aperture for the injection of e.g. a grout or a bituminous slurry to seal the connection.
Patent GB-1333109-A (GB)
Title: Cups and like containers
IPC: B31B50/00
Filed: 1970-12-23
Abstract: 1333109 Cups TOKAN KOGYO CO Ltd and J SETO 23 Dec 1970 [24 Dec 1969] 61302/70 Heading A4A [Also in Division B5 and B8] In a method of making a cup or like container, a foamed sheet of thermoplastic resin is curled to the shape of the container walls with the ends of the sheet overlapping and placed within a confined space in which it expands on a heating, the container bottom or a layer of material for forming the bottom on heating is placed in a position in which it is mechanically held by the foamed sheet upon its expansion. If the bottom is of a thermoplastic material it is additionally held by melt bonding its periphery to the foamed sheet. As particularly described a foamed sheet, e.g. of polystyrene, is compressed and cut to the developed shape of the container walls; a pattern may be printed on the sheet before it is cut. The cut sheet 2 is curled to shape in a machine, Fig.4, comprising a cylinder 3 with retainer lugs 3', a sheet charger 4 and pushers 5 whereby the sheet is gradually lowered and curled to form a tube or tapering cylinder which is transferred to a female die 8 in which a bottom forming material 10 e.g. a foamed polystyrene powder has been placed. A male die Fig.7 is then inserted and spaces are provided for the expansion of the container materials when the male and female dies are heated by fluid supplied through conduits 7d and to chamber 8f. A vacuum may be applied to the space between the dies via conduits 7f, 7h and ports 7i and 8i to assist the expansion of the materials. The upper and lower rims of the container formed in the spaces 11 and 12 may be compressed by rim presses 7g and 8e to increase their strength. The material for the container bottom may comprise a foamed or non-foamed sheet e.g. of paper, cardboard, wood, aluminium or tin.
Patent GB-1260640-A (GB)
Title: Clutch plates for friction clutches
Inventor: HOWARD MICHAEL ROI
IPC: F16D13/64
Filed: 1970-12-28
Abstract: 1,260,640. Friction clutches. FORD MOTOR CO. Ltd. 28 Dec., 1970, No. 61404/70. Heading F2C. A method of making clutch plates having a thin friction lining comprises securing locking plates 3, 5 to the opposite sides of a layer of friction material 1 and thereafter cutting the friction lining in half to form two clutch plates. The friction lining material may be woven asbestos yarn incorporating zinc wire and impregnated with a resin compound. The backing plates may be made of steel, aluminium or plastics material. The lining may be bonded or moulded on to the backing plates.
Patent GB-1261360-A (GB)
Title: Electrophotographic elements and their use
IPC: G03G17/10
Filed: 1968-12-31
Abstract: 1,261,360. Photo-conductive imaging member. XEROX CORP. 31 Dec., 1968 [2 Jan., 1968], No. 61835/68. Heading H1K. [Also in Division G2] An imaging member comprises a substrate comprising a layer of electrically conductive material, a layer consisting of carbon particles overcoating said conductive layer and a layer of solvent soluble insulating material and having particulate or fracturable photo-conductive migration material therein or thereon, the soluble layer being soluble in a solvent wherein the substrate, carbon particles and migration material are insoluble. The imaging member is developed after charging and image-wise exposure in a two-step process whereby in a first step a solvent for said soluble layer is used whereby the migration material forms an image lying on the particulate carbon layer and in the second step the conductive layer is dissolved away together with a portion of the particulate carbon layer to give respectively a positive or negative image according to whether the solvent for the conductive layer 12 simultaneously dissolves the migration material 15 and the carbon layer 13 thereunder (Fig. 5, not shown) or the carbon layer not covered by the migration material (Fig. 6, not shown). An insoluble support 11 of glass, paper or plastics has a conductive film 12 of Al, Sn O 2 , Sn, In, Cu 2 I 2  or Cu 2 S and an overlying film 13 of graphite, charcoal, coke, carbon black, lamp black or activated carbon which may be formed by coating with a colloidal carbon solution and drying, or dusting or cascading carbon particles on the film. The solvent softenable layer 14 is preferably a hydrogenated glycerol rosin ester but many other plastics materials and sucrose benzoate are specified. Particles 15 of vitreous selenium are deposited on the layer 14 by vapour phase deposition. Other suitable photo-conductors are specified. These may be in the form of a continuous or semi-continuous layer which is capable of breaking up during the first development stage. The particles may also be applied to the heat or solvent softened layer 14 by dusting or coating with a slurry. In other embodiments, the particles may be sandwiched between two plastics layers or dispersed in the layer 14.
Patent GB-677636-A (GB)
Abstract: 677,636. Furnaces. STOCKHILL, E. March 13, 1950 [March 30, 1949], No.8627/49. Class 51 (i). [Also in Group XI] In a solid fuel furnace wherein fuel is fed by gravity on to a grate, primary air admitted to the lower part of the unburnt fuel zone passes in a more or less horizontal stream over the distillation zone and with entrained combustible gases passes by one or more short ducts to the ashpit and upwardly through the firebed, final products of combustion passing from the stove by one or more flue openings adjacent the firebed. Solid fuel is fed by gravity through a combustion chamber 10 on to a fixed grate 13 and a movable grate 14. Combustion gases pass from the combustion zone 11 into a flue 15 which is separated from the combustion chamber 10 by a wall 21. Distillation gases formed in the unburnt fuel contained in the combustion chamber 10 are led to the ashpit 17 through a duct 22 which is provided with a thermostatically controlled damper 26 and an air inlet 23a. A primary air inlet to the ashpit 17 is provided. Sufficient primary air enters the stove through the unburnt fuel to maintain slow combustion. The combustion chamber 10 may be fed with fuel from a hopper. Secondary air may be mixed with the combustible gases passing to the ashpit 17. Specification 671,381, [Group XIII], is referred to.
Patent GB-763904-A (GB)
IPC: A63F1/06
Abstract: 763,904. Turntables; revoluble stands and trays. KEIM, M. Jan. 12, 1955 [Feb. 18, 1954], No. 977/55. Classes 52 (3) and 128. A turntable for table use comprises a base 10 of rigid fibreboard material having a severed central disc portion 13 displaced upward to form a bearing surface for the turntable top 16. In the construction shown the base 10 has feet 14 displaced in a similar manner and is connected to the top 16 by a headed rivet 23. Felt or other suitable covering may be bonded to the table surface at 17 and the feet at 15. A cover plate may be fitted to the recess left after displacement of the central disc to make the under surface of the base substantially continuous.
Patent GB-2026167-A (GB)
Title: Amplifier for an earthed thermocouple
IPC: G01K7/02
Filed: 1978-07-20
Abstract: An electrical temperature sensing device which is intrinsically safe comprises an earthed thermocouple 1 and an amplifier 2 using a biased direct current supply 3 which is totally isolated from the output from the amplifier. <IMAGE>
Patent GB-2003557-A (GB)
Title: Bearing bush
IPC: F16C33/08
Filed: 1978-08-22
Abstract: A bearing bush having a retaining lug 3 driven-in in the region of one joint face 2 is bevelled or rounded in one or both transition regions from the joint planes 5 of the retaining lug to the joint face and/or to the abutting surface 4. The bevelling is preferably at an angle of less than 90 DEG  and the rounding preferably has a radius of curvature of from 0.1 to 5 mm. The abutting surface of the retaining lug may be set back in relation to the joint face. The bevelling or rounding serves to prevent the formation of a run-off burr when broaching the joint faces. <IMAGE>
Patent GB-2030914-A (GB)
Title: Rotationally cast football with pre-formed lug
IPC: A63B43/00
Filed: 1978-09-21
Abstract: A lug attachment for a football which is to be tethered by a cord to anchor means comprises a preformed solid member H of greater Shore hardness than the body of the wall to which it is bonded during rotational casting of the ball. The lug 4 is injection moulded and is located between the mould halves in recesses in mould projections. <IMAGE>
Patent GB-2037832-A (GB)
Title: Fire-retardant Composition and Method of Rendering Cellulosic Materials Fire-retardant
IPC: D06M11/55
Filed: 1978-12-19
Abstract: The fire-retardant composition of United States Patent No. 3,983,040 is improved to a surprising extent by the addition thereto of from about 10% to about 40% by weight of ammonium sulfate. In producing the improved composition, the patented composition is first made by reacting a pulverized borate ore selected from the group consisting of calcium, sodium, magnesium, and potassium borates and mixtures thereof, with sulfuric acid and water for a time sufficient to produce a substantially dry reaction product containing a boric acid constituent and a sulfate constituent. After drying, the reaction product is pulverized and the ammonium sulfate, also in pulverized condition, is intimately mixed therewith, or the two may be pulverized together to produce the final improved product. Cellulosic material is rendered fire-retardant by application of the product thereto.
Patent GB-2011092-A (GB)
Title: Liquid-vapour sensor device
IPC: G01N27/04
Filed: 1978-12-22
Abstract: A device responding to the degree of liquid vapour in an enclosure C to control the application of energizing power via socket B to an appliance. such as an exhaust fan (not shown). Response is by voltage value resulting from changing resistance between adjacent conductors on a printed circuit board D exposed to condensation of the vapour. Switching of power to the appliance is controlled by a comparator 8 which compares said voltage value and the value of a reference voltage. <IMAGE>
Patent GB-2013585-A (GB)
Title: Manufacturing breakwaters
IPC: E02B3/06
Filed: 1979-01-29
Abstract: A method of fabricating inflatable structures such as breakwaters in which waisted flexible strips 3 are arranged and joined along their edges to form a crease free flared element. Neighbouring elements are connected directly or indirectly by joining strips 5 to form an extended structure which is of smooth contour when inflated. <IMAGE>
Patent GB-2015328-A (GB)
Title: Bar supports for hurdles
IPC: A63K3/04
Filed: 1979-02-27
Abstract: A support for the pole of a horse jump is arranged to provide ready detachment under downward thrust to prevent injury to the animal, and comprises a plate (9) with an elongate slot (11) having a narrowed mouth (12) and widened part (13) through which the head of a bolt (4) on a vertical post may be passed. The plate carries a cradle 10 to support the pole. The mouth of the slot (11) will splay under excess downward load to allow to disengagement. <IMAGE>
Patent GB-2015856-A (GB)
Title: Root Crop Harvesters
IPC: A01D33/14
Filed: 1979-03-22
Abstract: A mechanism for supporting the shear (10) (or shears) and adjusting the height thereof relative to a frame (44) to control the depth of penetration into soil over which the harvester passes comprises a parallel linkage (34, 36) pivotally attached at one end at pivots (38 and 40) to an upright support (42) mounted on the frame (44) and at their opposite ends at (30, 32) to a movable subframe member (14) having the shear (10) mounted at the lower end thereof. A pivot joint (16) between a foot (12) carrying the shear (10) and the lower end of the subframe member (14) allows the angle of the shear (10) to be adjusted by a screwed rod (18) and lock nuts (22, 26). Vertical height adjustment of the subframe and shear assembly is effected by a ram (52) and associated linkage (56, 58, 60 and 64). Guides (76,78) support a sliding leg (74) carrying a bearing assembly (72) at its lower end for a disc (70), the leg (74) being sprung by coil spring (84) between a collar (82) and the upper guide (78) and including a headstop (80) which limits the downward travel of the leg. <IMAGE>