baber/WOPTO huggingface dataset:
Patent GB-457627-A (GB)
Abstract: 457,627. Two-stroke-cycle engines. FREDERICKSON, C. E., 209, West Jackson Boulevard, Chicago, U.S.A. Nov. 18, 1935, No. 31897. [Class 7 (ii)] Gaseous fuel is induced into the crankcase through a valve 13, and air into the transfer passage 21 through a valve 24. The compressed mixture enters the space within the piston sleeve 40 through ports 20, 45. The sleeve moves in the annulus between the cylinder and the inwardly projecting domed cylinder head, the piston-face 41 being also domed to reduce the compression-space within the dome 33. The cylinder is set at an angle to the vertical, but with horizontal cooling ribs.
Patent GB-1508228-A (GB)
Title: Transistor circuits
IPC: H03F1/30
Filed: 1975-11-06
Abstract: 1508228 Transistor amplifiers SONY CORP 6 Nov 1975 [12 Nov 1974 14 Nov 1974] 46090/75 Heading H3T A circuit, e.g. 12a, for biasing an FET Q3b, includes a variable impedance K the value of which is related to the voltage across it and hence to the supply voltage by a hyperbola, whereby the drain current of Q3b is maintained substantially independent of supply voltage. The circuit is particularly applied to FET's having triode characteristics. Figs. 1-3 (not shown). It is shown mathematically in the specification that, if the supplies B 1 , B 2  fluctuate together, any change in the drain potentials of Q3a, Q3b is compensated for by a change in their gate potentials.
Patent GB-1022937-A (GB)
Title: Electrophotographic materials and a process for their manufacture
IPC: G03G5/05
Filed: 1964-11-13
Abstract: Polymers are amidated by heating a composition containing (a) a water-soluble salt of a resin-forming polymer containing acid groups, (b) a volatile nitrogen base (c) a photoconductor and (d) a non-volatile amine containing at least two reactive amino groups. The composition is applied to a substrate and on heating the substrate, the nitrogen base volatilizes, thus giving an electrophotographic plate.  The resin-forming polymer may be a copolymer of vinyl acetate and/or vinyl caprate with maleic acid or crotonic acid.  The volatile nitrogen base may be NH3, CH3NH2, C2H5NH2 or (CH3)3N. The photoconductor may be an oxide of Sb, Al, Bi, Cd, Hg, Mo or Pb, but ZnO is preferred. The photoconductor may be activated by B, Tl, Li, Pb, Co or Ag as elements or their compounds, e.g. boric acid is used to actuate ZnO. The non-volatile amine may be an aliphatic polyamine of formula H2N(ANH)n-ANH2 where n is an integer and A is an alkylene radical, e.g. diethylenetriamine, triethylenetetramine, tetraethylenepentamine or hexamethylenediamine. The compositions may be aqueous and may contain colouring matter.
Patent GB-1184794-A (GB)
Title: Improvements in Mineral-Mining, Broad-Nosed Cutting Tools having Hardened Metal Inserts
Inventor: BELL HUGH GRAHAM
IPC: E21C35/18
Filed: 1966-10-18
Abstract: 1,184,794. Mineral-mining cutter tools. COAL INDUSTRY (PATENTS) Ltd. 17 Oct., 1967 [18 Oct., 1966], No. 46546/66. Heading E1F. The hardened metal insert 12 in the nose 11 of a mineral-mining, broad-nosed cutter tool is formed with two discrete leading parts 20a that are separated from each other in the direction of the breadth of the tool. The separation is, preferably, caused by a centrally disposed V notch 18 formed in at least one of the flat upper and frontal aspects of the tool.
Patent GB-1141433-A (GB)
Title: Electronic rate generator
Inventor: COTTRELL GEORGE BRUCE
IPC: G01P3/44
Filed: 1967-10-12
Abstract: 1,141,433. Frequency determining. NORTH AMERICAN AVIATION Inc. 12 Oct., 1967 [24 March, 1967], No. 46660/67. Heading H3A. [Also in Division G1] In a tachometer circuit a D.C. voltage proportional to the frequency of revolution of the shaft 1, Fig. 2, is produced from two sinusoidal input signals whose amplitudes are constant and frequencies are both equal to that of the rotation of the shaft but which are relatively shifted in phase by 90 degrees. The two input signals, Figs. 3a, 3b (not shown), from resolver 2, energized by generator 3, are fed via emitter followers 26, 27 to pairs of demodulating insulated gate field effect transistors 32-35 to whose gate electrodes in phase and 180 degrees out of phase signals from generator 3 are fed to provide four signals 90 degrees out of phase with each other, Figs. 3e-3h (not shown). These signals, supplied across capacitors 36-39, are differentiated by RC circuits 45-51, Figs. 4e-4h (not shown), and fed to further demodulating transistors 52-55 whose gate electrodes are fed with inphase square wave signals, Figs. 4a-4d (not shown), from one of two saturating differential amplifiers 19, 20, whose inputs are provided by the outputs d, c and a, b from transistors 35, 34 and 33, 32. The outputs from transistors 52-55 thus consist of the positive half cycles of each of the inputs, Figs. 5a-5d (not shown), which are summed and smoothed to provide the required D.C. signal.
Patent GB-1168462-A (GB)
Title: Fluorindine Derivatives
IPC: C09B17/06
Filed: 1966-10-19
Abstract: 1,168,462. Fluorindine derivatives. EASTMAN KODAK CO. 19 Oct., 1966 [20 Oct., 1965], No. 46703/66. Heading C4P. The invention comprises compounds of the formula where R and R 3  are the same or different alkyl or substituted alkyl group containing 1-6 carbon atoms and each represents an o-phenylene, substituted o-phenylene or 1,2- or 2,3-naphthylene group. The compounds may be prepared by heating a mixture of compounds of the formulµ The compound wherein R and R 3  are the same may be prepared by heating an o-phenylenediamine or o-naphthylenediamine with 2,5- dihydroxy- 1 ,4-benzoquinone in the presence of an acid catalyst.
Patent GB-1373784-A (GB)
Title: Circuit arrangements for the regeneration of pulse-shaped signals
Inventor: BECKER A
IPC: H03K5/12
Filed: 1971-10-08
Abstract: 1373784 Pulse regenerators SIEMENS AG 8 Oct 1971 [30 Oct 1970] 46860/71 Heading H3P Pulses occurring in periodic time slots are regenerated by integrating the pulse during each slot, monitoring the output of the integrator to determine the identity of the pulse and using the output of the monitor to set a bistable circuit upon the occurrence of a timing pulse. In Fig. 1 the incoming pulses are integrated by circuit RC during each time slot and the integrator is reset by contact K at the end of the slot. The monitoring circuit W detects whether the output of the integrator has risen above a given value and sets correspondingly a bi-stable circuit F in response to a timing pulse occurring at the end of the slot. As described, the incoming pulses are bipolar and the circuit detects whether the pulse is positive or negative of zero. Fig. 7 receives signals in which successive "1" signals are represented by pulses of opposite polarity and a "0" is represented by a zero signal (Fig. 8g). These signals are continuously integrated by a circuit R-C to provide waveform 8h. Monitor W_ detects whether this waveform is above or below a threshold value, providing waveform 8i and this sets a  bi-stable circuit in response to clock pulses k to produce an output waveform 81. The original data can be recovered from this by a pulseshaper P.
Patent GB-1153159-A (GB)
Title: Steering wheel with wood-surfaced rim and method of its manufacture
IPC: B62D1/04
Filed: 1966-10-24
Abstract: 1,153,159. Vehicle steering wheels. LENKRADWERK GUSTAV PETRI A.G. 24 Oct., 1966 [23 March, 1966], No. 47506/66. Heading B7J. A steering wheel rim 1 comprises a steel core 2 surrounded by a hard rubber body 3 and covered by wood veneers 4, 5 of from 0À3 to 1 mm. thickness. The direction of the veneer grain may be radial or circumferential and formed from a continuous strip or arcuate section in abutting or overlapping relationship. The rim is made by embedding the core in unvulcanized rubber, partially vulcanizing, superimposing the veneer and then completing vulcanization. The veneer may be impregnated with a thermo-setting synthetic resin which is cured with the completion of vulcanization. The veneer may be plasticized by steaming and pre-shaped prior to application to the body to more easily take up the shape of ridges 6.
Patent GB-1182890-A (GB)
Title: Preparation of Cracking Feed and Carbon Black Feed.
Inventor: GODINO RINO LODOVICO
IPC: C10G51/06
Filed: 1968-10-07
Abstract: 1,182,890. Separating hydrocarbons. FOSTER WHEELER CORP. 7 Oct., 1968 [6 Oct., 1967], No. 47510/68. Heading C5E. A paraffinic raffinate mix 40 and a highly aromatic carbon black feed 42 are produced by contacting at 36 a deasphalted oil 26 with a highly aromatic.solvent extract phase 34. The oil is produced from a crude petroleum fraction 16 by conventional vacuum flash distillation at 18 and conventional solvent deasphalting of the residuum at 22, and the stream 34 is produced from a cycle o;l and/or decant oil 28 by extraction with furfural, phenol, liquid sulphur dioxide or glycol ether at 30. Decant oil is a fraction recovered from catalytic cracking and is higher boiling than recycle oil, e.g. having a B.R. of 700‹ to 900‹ F.
Patent GB-1461981-A (GB)
Title: Microwave oven having a safety switch interlocked with the door
IPC: H05B6/76
Filed: 1974-11-04
Abstract: 1461981 Mechanical switches AMANA REFRIGERATION Inc 4 Nov 1974 [13 Dec 1973] 47639/74 Heading H1N [Also in Division H5] A microwave oven has a door-operated safety switch 78 operated by a lever 44 pivoted to the door and guided for sliding and rotational movement by a bushing 54 pivoted to the door frame 16. Lever 44 has a turned down end 46 to prevent door 18 opening too wide. Bushing 54 is made of two interengaging nylon parts (56, 58, Figs. 3, 4, not shown). As the door closes, lever 44 first slides in bushing 44 in a direction 106, Fig. 5, secondly when the door is almost shut the end of lever 44 follows an arc 108 to engage switch operating spring 80, since the distances of arm pivot 50 and bushing pivot 76 from the door hinge are different. A choke seal is present around the door but is not described.
Patent GB-1246826-A (GB)
Title: Method and arrangement for measuring non-uniformities of transmissions having a small transmission ratio
IPC: G09B21/00
Filed: 1968-10-08
Abstract: 1,246,826. Determining inaccuracies in gears, electrically. VYZKUMNY USTAV OBRABECICH STROJU A OBRABENI. Oct. 8, 1968 [Oct. 10, 1967], No.47673/68. Heading G1N. The irregularities in a low gear ratio transmission link are measured by introducing a large gear ratio whose irregularities are eliminated. As shown, Fig. 1, for monitoring the gear ratio of wheels 2, 3, wheel 2 is driven by a motor 5 through worm gear 4, the motor also driving an auxiliary wheel 10 meshing into a wheel 11, the gear ratio of wheels 10, 11 and 2, 3 being equal, The various rotational speeds are measured by transducers 6-9. The output from transducers 6, 8 are frequency-corrected in accordance with the gear ratio of worm gear 4, and the variation in phase difference measured at 18, Fig. 3, being indicative of the irregularities of worm gear 4: the output from transducers 7, 9 are also frequency-corrected in accordance with the gear ratio of worm gear 4, and the variation in phase difference measured at 19, being a measure of the total irregularities of worm gear 4, gear-wheels 2, 3 and gear-wheels 10, 11. The gear-wheels 10, 11 are chosen with no irregularities, whereby the difference, obtained at 21, between the output from meters 18, 19, modified at 20 in accordance with the gear ratio of wheels 10, 11 or 2, 3, represents the inaccuracies in the gear ratio of wheels 2, 3 and is indicated at 23.
Patent GB-1211018-A (GB)
Title: New 3-formylcephalosporin compounds and process for preparing same
Inventor: CHAMBERLIN JAMES WESLEY
IPC: C07D501/04
Filed: 1967-10-19
Abstract: 1,211,018. 3-Formyl cephalosporin esters. ELI LILLY & CO. 19 Oct., 1967, No. 47690/67. Heading C2A. The invention relates to 3-formyl cephalosporin esters of Formula (II) wherein R is an ester forming group consisting of C 1 -C 6  alkyl, C 2 -C 6  haloalkyl, benzyl, diphenylmethyl, 3,5 - dimethoxybenzyl, pmethoxybenzyl or tetrahydropyranyl and R<SP>1</SP> is acyl. Compounds of Formula (II) wherein R is are prepared by (a) reacting a 7-acylamido-3- hydroxymethyl - 3 - cephem - 4 - carboxylic acid with a diazo compound of formula in which each of R<SP>11</SP> and R<SP>111</SP> is H, C 1 -C 6  alkyl, C 2 -C 6  haloalkyl, phenyl or carboalkyloxy having C 1 -C 6  alkyl except that, when R<SP>11</SP> is carboalkyloxy, R<SP>111</SP> is H; or R<SP>11</SP> and R<SP>111</SP> taken together with the carbon atom to which they are attached may denote an aryl hydrocarbon radical having from 6 to 8 carbon atoms, to obtain a 7-acylamido-3-hydroxymethyl-4-carboxylate ester and (b) reacting said ester with an oxidizing agent to form as product a 7-acylamido-3-formyl-3-cephem-4- carboxylate ester. The oxidizing agent may be a metal oxide such as chromium trioxide and manganese dioxide. A preferred compound is 7 - (2 - thienylacetamido) - 3 - formyl - 3 - cephem - 4 - carboxylate. The 3 - formyl cephalosporins react with alcohols, thiols or glycols to form acetals, thioacetals or dioxamyl compounds. They react with hydrazine to form hydrazones and with semi-carbazide to form semi-carbazones. They also form addition salts with sodium bisulphite and oximes with hydroxylamine. They form imines by reaction with primary or secondary amines and cyanohydrins by reaction with hydrogen cyanide. The 3-formyl cephalosporins have antibacterial activity and resist penicillinase.
Patent GB-986743-A (GB)
Title: Improvements in or relating to chain hoists
IPC: B66D3/10
Filed: 1963-12-03
Abstract: 986,743. Limit stops for chain hoists. HEINRICH DE FRIES G.m.b.H. Dec. 3, 1963 [Dec. 4, 1962], No. 47694/63. Heading B8B. End stop gear for a power-driven chain hoist comprises limit switches or valves 4, 5, Fig. 1, mounted behind a rigid cover-plate 8 having apertures for the chain 10 and operating tappets 6, 7 and carrying a resilient cushion 9 engaged by end abutments 12, 13 on the chain. Apertures are provided in the cushion 9 for the tappets 6, 7 which are preferably mounted with their ends below the surface of the cushion 9 and are arranged to move beyond the cut-off position to permit compression of the cushion 9 on over-run. In a modification, a cushion 16, Fig. 2, may have a thin layer of material 17 arranged to provide a sealed closure for the tappets.
Patent GB-1145031-A (GB)
Title: Improvements in or relating to chain saw sharpeners
IPC: B23D63/16
Filed: 1967-10-20
Abstract: 1,145,031. Grinding. OMARK INDUSTRIES Inc. 20 Oct., 1967 [9 Nov., 1966], No. 47917/67. Heading B3D. A chain saw comprises a sharpener for sharpening the tops of top sharpenable teeth of a saw chain 30 as the chain is advanced through an arcuate portion of a path of movement of the chain, the sharpener having a member 50 rotatable on and slidable along a predetermined axis 120 inclined to the general plane of the chain and angularly intersecting a line 122 normal to the plane and extending through the centre of the arcuate portion of the path. The saw chain 30 is driven by a sprocket 26 along a bar 32 secured to the chain saw 20 by nuts 37. The saw chain has a cover 38 formed with a thickened corner portion 74 on which the sharpener is mounted by a pair of dowels 72 fixed to the cover and slidably receiving a carrier 60 of the sharpener. The carrier rotatably supports a shaft 56 which is urged downwardly to a position determined by a ring 79 by a spring washer 64 and carries at its lower end the sharpening member which has a concave spherical surface 52 for engaging the tops of the teeth of the saw chain to be sharpened. The member can be moved into engagement with the teeth by rotation of a differential screw 82. The axis 120 of the member 50 intersects the axis 122 of the sprocket 26 at a point 124 midway between the sides of the saw chain, and the width W of the annular surface 52 of the member is such that, during sharpening and as the member is permitted to slowly rotate, the surface is dressed by the teeth of the saw.
Patent GB-1483731-A (GB)
Title: Axles for motor road vehicles
IPC: B60B/
Filed: 1974-10-15
Abstract: 1483731 Vehicle hub reduction gearing; vehicle brakes KIRKSTALL FORGE ENG Ltd 9 Oct 1974 [15 Oct 1973] 47973/73 Heading F2E [Also in Division B7] In a vehicle axle arrangement including a hub rotatably mounted on an axle casing with epicyclic gearing driven by the axle drive shaft for driving the hub, there is provided a disc brake comprising two sets of discs mounted on respective relatively rotatable parts of the axle. As shown in Fig. 1 a hub reduction epicyclic gearing 12 comprises three planet gears 18a carried by carrier 18, the gears meshing with sun gear 17 on drive shaft 15 and with an annulus gear 19 supported by carrier 20 fixed to axle tube 10. Outboard housing member 28 carries bearings 36, 38 for supporting the planet carrier 18 and wheel hub 13, the tubular part 37 of wheel hub 13 being splined to carrier 18. An oil seal 39 between carrier 18 and wheel hub 13 and plug 40 seals the outboard end of the housing which contains oil. The brake comprises one set of discs 46 splined to sun gear 17 and another set 48 which are notched at their outer peripheries and located against rotation by pins 49 received in aligned apertures in abutment ring 26 and gear carrier 20. An annular thrust plate 50 is also supported by the pins 49 and also by a further series of pins 51 received in the thrust plate 50 and abutment ring 26. Springs 52 urge the thrust plate away from the abutment ring 26 thus maintaining the brake in a disengaged state. Heads 59 of pins 58 extending through a cross-shaft 53 engage thrust surfaces 60 of plate 50. The cross shaft has an arm 54 which is rotated in an anti-clockwise direction against force of spring 55 for actuation of the disc brake by means of an hydraulic actuator 56. In another embodiment, Fig. 4, the planet carrier 71 is located by bearings 73, 75 outboardly and inboardly of the gearing respectively. The brake comprises one set of discs 84 splined to the sun gear 69 and a further set of discs 85 received on internal splines 86 within the planet carrier 71. A thrust plate 89 also engages splines 86 and is movable axially thereof by a lever 96 to force the plates 84, 85 into engagement against abutment ring 87.
Patent GB-1534004-A (GB)
Title: Method and apparatus for determining acoustic wave parameters indicative of wave velocity in well logging
IPC: G01V1/50
Filed: 1975-11-19
Abstract: 1534004 Well logging SCHLUMBERGER Ltd 19 Nov 1975 [27 May 1975] 47978/75 Heading G1G In a method of well logging, waves received by an array of four receivers R 1-  4  separated from each other and from a transmitter T by known distances are correlated in a variable correlation window (74) Fig. 2, (not shown) by a processor 40 using various values of transit times #T based on a spread of assumed probable wave velocities. The value of #T giving the highest correlation is recorded as the tool 10 is moved up the borehole. The processing may be digital or analogue Fig. 8, (not shown).
Patent GB-1476279-A (GB)
Title: Manufacture of a contact breaker arm for an ignition distri butor of an internal combustion engine
IPC: H01R39/60
Filed: 1975-11-25
Abstract: 1476279 Rotary ignition distributer DUCELLIER ET CIE 25 Nov 1975 [18 Dec 1974] 48313/75 Heading H1N A contact breaker arm for an ignition distributer of an internal combustion engine is moulded from plastics material with the frictionally engaging surfaces formed from plastics material with a high resistance to abrasion and previously disposed in the mould. The abrasion resistant material may be a polyimide filled with graphite, molybdenum disulphide or p.t.f.e. and which bonds with the plastics material of the body of the breaker arm.
Patent GB-967777-A (GB)
Title: Gas turbine engine cooling arrangements
Inventor: LEVESQUE ROBERT LUCIEN
IPC: F02C7/18
Filed: 1962-12-21
Abstract: 967,777. Gas turbine plant. GENERAL ELECTRIC CO. Dec. 21, 1962, No. 48365/62. Heading F1G. In a cooling arrangement for a gas turbine engine, compressor air flows through a passage between the combustion chamber flame tube and the engine outer casing, the turbine casing has axially spaced flanges for supporting shrouds and cooling tubes pass from the air passage through the upstream flanges into the downstream flanges to provide air from the passage to the flanges and shrouds. A gas turbine engine having a compressor 1, combustion equipment 2 and a turbine 3 has cooling air passages 13, 14 between the annular flame tube 9 and the outer and inner casings 7, 8. The turbine casing 20 is attached to casing 7 at 21 and carries flanges 22, 23 supporting rotor blade shrouds 24, 25. Tubes 31 having closed upstream ends 33 and air inlet holes at right angles to the airflow pass through the upstream flange 22 to the downstream flange 23 and supply cooling air from the passage 13 to the flanges and shrouds through ports 36, 35 and passages 40, 41. The cross-sectional area of each inlet hole in a tube 31 is less than the cross-sectional area of the tube.
Patent GB-1200198-A (GB)
Title: Improvements in or relating to discharge devices in packaging apparatus
IPC: B65B19/10
Filed: 1967-10-26
Abstract: 1,200,198. Feeding endless conveyers; shoots. ARENCO A.B. 26 Oct., 1967 [18 Nov., 1966], No. 48665/67. Headings B8A and B8S. Cigarettes from a hopper 52, 53 collect in groups in a partitioned receptacle 42 beneath the hopper and the cigarettes of each group are simultaneously displaced axially by a ram 13 into a box-like carrier 44 carried by endless conveyer chains 45, the ram 13 and receptacle 42 being mounted on a plate 17 which is adapted to move parallel with the conveyer during the transfer. The hopper 52, 53 feeds the receptacle 42 via a number of partitions 41 pivotally mounted on shafts 38. The two outermost 37, 37, of these partitions 41 are connected by links 36, 36, 35, 34 to a cam actuated arm 32. This is timed so that when cigarettes have filled the partitions of the receptacle 42 to a depth of three cigarettes, the paritions 37, 41 are urged together to prevent further cigarettes falling down. The receptacle 42 is mounted on the plate 17 by being carried by the outer end of a member 25, the inner end of which is pivotally connected to the plate 17 at 24. The outer end of the member 25 rests on an arm 27 which is pivotally connected to the frame at one end 28 and has a follower 29 at its other end which bears on a cam 7. The timing of the latter is such that when the partitions 37,41, are in their closed position, the arm 27 is lowered so as to lower the receptacle 42 into line with the conveyer carrier 44. The ram 13 is then actuated by a cam 4 to discharge the cigarettes from the receptacle 42 into a carrier 44 as the plate 17 (carrying the ram 13 and receptacle 42) moves parallel with the conveyer under the action of a cam 5 bearing on a follower 21 of a linkage 22, 30. A stop 55 prevents the middle cigarette of the middle row being fed from the receptacle 42, so that 20 cigarettes only are located into the carrier 44. The opening 49 of the latter, through which the cigarettes pass, is widened momentarily by the action of a follower 47 on the carrier 44 engaging a cam rail 48 thereby causing the container walls to move apart and its coverplate to be lifted.