baber/WOPTO huggingface dataset:
Patent GB-1302745-A (GB)
IPC: F16D65/02
Filed: 1970-12-09
Abstract: 1302745 Spot type disc brakes; pad assemblies; preventing squeal SOC ANON DBA 9 Dec 1970 [17 Dec 1969] 58368/70 Heading F2E A spot type disc brake includes a pad assembly 12 comprising a support plate 14 and a friction lining 18 carried by the plate 14: one or more radial grooves 20 are provided in the lining 18 and the radially inner and outer boundaries of the lining 18 are formed as bevelled surfaces 26, 24 which are inclined towards one another in the direction from the plate 14 to the surface 22 which forms part of an annulus coaxial with the disc and which comes into frictional co-operation with the disc. The radial dimensions of the lining thereby decrease from its face applied against the support plate 14 to its face 22 and such an arrangement is said to reduce high frequency acoustic vibrations on brake application. As seen in Fig. 2 the lining 18 is formed with a section in the form of an isosceles trapezium, the angles between the surfaces 24, 26 and the surface 22 being in the range 100 to 150 degrees but preferably 120 degrees. In the embodiment of Fig. 3 (not shown) the lining (18a) is formed with a section in the form of an asymmetric trapezoid: the surfaces (24a, 22a) have an angle therebetween in the range 100-120 degrees but preferably 120 degrees and the surfaces (26a, 22a) have an angle therebetween in the range 120-150 degrees but preferably 135 degrees. The construction of Figure 2 is most suitable for a brake where two motor cylinders act upon the pad and the construction of Fig. 3 is most suitable for single motor actuation. The lining 18 is attached to the plate 14 by gluing or over-moulding
Patent GB-1404966-A (GB)
Title: Gas discharge display panel apparatus
IPC: H01J17/49
Filed: 1972-12-20
Abstract: 1404966 Gas discharge display panels INTERNATIONAL STANDARD ELECTRIC CORP 20 Dec 1972 [22 Dec 1971] 59735/72 Heading H1D Gas discharge display panel apparatus comprises a gas-filled enclosure 11 containing a stack of channel plates 12, 15, 18 and 21 each having on one face a relatively thin conductive electrode layer 13, 16, 19 or 22 having apertures in register with the channels, and on the other face a similarly apertured electrode layer 14, 17, 20 or 23, the layers 23, 20 and 17 being divided progressively as shown into two, four and eight portions, means 23 for applying a sustaining potential E1 between the electrodes 14 and 13 of the viewing plate 12 and means 27, 28 and 29 for applying digital pulse voltages e 1 , e 2  and e 3  between selected electrode portions of plates 21, 18 and 15 or produce priming discharges in the channels of a selected portion of plate 15 which together with the sustaining potential produce discharges in the channels of the corresponding portion of the viewing plate 12. These discharges are sustained utnil a switch 30 is operated by a reset pulse on lead 31. The plates 12, 15, 18 and 22 are separated by apertured spacer plates (not shown). Owing to the priming effect, e 3 < 2 <e 1 , and if the pulse repetition frequencies are of the same order as the ionization time, e 3  and e 2  may have to be delayed with respect to e 1 .
Patent GB-1404210-A (GB)
Title: Controlling refrigerator defrosting-apparatus
IPC: F25D21/08
Filed: 1972-12-20
Abstract: 1404210 Measuring temperature electrically PHILIPS GLOEILAMPENFABRIEKEN NV 20 Dec 1972 [23 Dec 1971 23 Oct 1972] 58746/72 Heading G1N [Also in Division F4] A circuit for controlling the operation of the defrost apparatus of a refrigerator has means for sensing, continuously or periodically, the temperature of a storage space and the temperature of the evaporator coil and the defrost apparatus is automatically started when the difference between the two temperatures exceeds a predetermined value, indicating an insulating layer of frost, and one of the sensed temperatures is less than a given value. The thermistors 36, 38 are in contact with the evaporator coil and in the frozen food chamber respectively. The thermistors are both connected in series with resistors 40, 49 between leads 42, 43 supplied with D.C. voltage by transformer 44, diode 45 and capacitor 48. The thermistors are connected to a switch 52 which responds when the temperature difference exceeds a given value.
Patent GB-591580-A (GB)
Abstract: 591,580. Excavating. LOOSEMORE, R. W. Aug. 1, 1944, No. 14098/43. [Class 68 (i)] A scraper for excavating comprises a scoop 2 pivoted at 4 to a drawbar 3 and fixed to a sleigh frame 1 provided at each end with stops or notches 7, 8 with which co-operate pivoted stop levers 10, whereby the scoop may be held in the scraping position shown or in travelling position with the leading edge 2a raised. The stop levers 10 are connected through rods 12 to a pivoted triangular plate 13 also connected by a rod 15 to a hand lever whereby the levers 10 may be released from the stops &c. 7, 8 against spring resistance ; forward movement of the drawbar then causes movement of the scoop and sleigh frame about pivot 4 until the ends of cross-bar 17 contact the drawbar, so dumping and levelling the spoil.
Patent GB-1359660-A (GB)
Title: Exhaust systems for internal combustion engines
IPC: F01N13/02
Filed: 1970-12-18
Abstract: 1359660 Purifying I C engine exhaust gases BRITISH LEYLAND MOTOR CORP Ltd 3 Dec 1971 [18 Dec 1970] 60198/70 Heading F1B Heat is removed from the exhaust gases upstream of a first catalytic reactor 13 and returned to the gases upstream of a second catalytic reactor 15. Air supplied by a blower 19 is heated by the exhaust gases in a shell and tube heat exchanger 12 and the heated air is fed through a tube 21 to the exhaust duct 11 downstream of the reactor 13. The duct 11 downstream of the reactor 13 and the reactor 15 are covered in thermal insulation 16. NO is reduced in reactor 13 and HC and CO are oxidized in reactor 15. The catalysts may be as described in Specification 1334797.
Patent GB-603531-A (GB)
Abstract: 603,531. Domestic cooking ranges. FEDERATED FOUNDRIES, Ltd., and CHAMBERLAIN, E. A C. Oct. 23, 1945, No. 27940. [Class 126] In a domestic cooking range having a fuel magazine, the grate d is located below the magazine a which is lined with firebrick b and carries a boiler m, combustion air is supplied in controlled quantities through a duct g and the combustion products pass through a flue h below a hotplate j to the opening i. The oven k is heated by the circulation of air in the closed circuit l, control of the oven heat being effected by the admission of cold air at n. The flue h may be partitioned as at o and fitted with a damper so that either the oven k or the hotplate j may be preferentially heated and secondary air may be introduced into this flue.
Patent GB-1237420-A (GB)
Title: Improvements in or relating to reed contact units
IPC: H01H50/18
Filed: 1968-12-23
Abstract: 1,237,420. Magnetic reed contact units. FUJITSU Ltd. 23 Dec., 1968 [27 Dec., 1967], No.61165/68. Heading H1N. A sealed magnetic reed contact unit has a reducing atmosphere within its envelope and the atmosphere comprises water vapour and hydrogen in the partial pressure ratio of less than 1/10<SP>3</SP> and preferably 1/10<SP>4</SP>. One of the contact blades may be a closable tube for inserting the atmosphere after manufacture in an oxidizing or inert atmosphere.
Patent GB-1241459-A (GB)
Title: Oxidative conversion process
IPC: C07C5/48
Filed: 1968-12-24
Abstract: 1,241,459. Oxidation process. PHILLIPS PETROLEUM CO. 24 Dec., 1968 [26 Dec., 1967; 21 Oct., 1968], No. 61360/68. Heading C2C. [Also in Division C5] Organic compounds are oxidized or oxidatively dehydrogenated in the gaseous phase by a free oxygen-containing gas in the presence of an iron phosphate catalyst containing an amount of phosphorus of from 1.001 to 5 times the stoichiometric amount required to form orthophosphate (P0 4 ) ions with all the iron present and to give an oxygen to phosphorus atomic ratio in the catalyst of from 3 : 1 to 3À999 : 1. The iron may be present in the ferric, ferrous or ferrosoferric state, and the catalyst may be supported, e.g. on silica, alumina, boria, magnesia, titania, zirconia, silica-alumina, boriaalumina or silica-magnesia. Many starting materials are mentioned, as are the following specific conversions: butenes and/or butadiene to furan and acetaldehyde; pentenes and/or pentadienes to furfural, acetaldehyde and acetic acid; methacrolein to methacrylic acid; and 2-methyl-5-ethyl-pyridine to 2-methyl-5- vinyl-pyridine. In examples,' butadiene is oxidized to furan and acetaldehyde, and 2- methyl-butene-2 to furfural, acetaldehyde and acetic acid.
Patent GB-2009481-A (GB)
Title: Variably erasing magnetic tape recording
IPC: G11B25/06
Filed: 1978-06-07
Abstract: Apparatus for variably erasing sound recorded on a magnetic tape 2 of a cassette 1, to produce a fade-in or fade-out effect, comprises transporting means 5, 6 for causing the tape to be transported past an erasure head 13 at an erasing region. The head 13 is part of a ferromagnetic member 12 and a permanent magnet 10 movable towards and away from the head 13 induces the magnetic erasing field in the erasing region. A pulley 8 coupled to the transporting means 5, 6 moves the permanent magnet 10 relative to the head 13 as the tape is transported through the erasing region to vary the magnetic erasing field and thereby the degree of erasure. <IMAGE>
Patent GB-2027924-A (GB)
Title: Fibre optic connectors
IPC: G02B6/38
Filed: 1978-08-15
Abstract: Fiber optic connector apparatus and methods and apparatus for applying the fiber optic connector apparatus to the fiber optic cable are provided. The fiber optic connector apparatus includes a metallic termination 3 having a first apertured end portion 11 for butting optical fibers exposed at the aperture and a second apertured end portion for receiving the fiber optic cable. An application device for holding the termination 3 in alignment with a cable to be attached is provided to heat the termination to a temperature to cause protective sheathing on the cable to flow. Upon melting, an end portion of the cable to be attached is biased against the second apertured end portion to cause it to be displaced into the termination as the protective sheathing begins to flow to expose optical fibers at the first end portion and, upon cooling, maintain the portion of the cable within the termination in a compressed, adhered condition. A ferrule 7 and a threaded body 8 may then be fitted to the termination and a nut 9 may then be secured thereover to ensure the mechanical integrity of the applied connector apparatus. <IMAGE>
Patent GB-2003810-A (GB)
Title: Fifth wheel coupling for articulated vehicles
IPC: B62D53/12
Filed: 1978-09-04
Abstract: A fifth wheel coupling has a pair of locking jaws (7) which are pivoted by pivot pins (6) to the slotted fifth wheel plate (1) on the tractor vehicle so as to embrace the pivot pin (18) of the trailer when the coupling is engaged, the jaws being locked by engagement of a spring-loaded slider (9) between the jaws when the coupling is engaged. The slider (9) is retractable by a manual release lever (14) engaging in a notch in the slider (9). The jaws (7) are held open ready for automatic coupling by engagement of the slider (9) with abutting heels (7a) of the opened jaws. <IMAGE>
Patent GB-2007748-A (GB)
Title: A motor vehicle having an improved side door arrangement
IPC: B62D33/06
Filed: 1978-10-10
Abstract: A motor vehicle having a side door (6), one vertical edge (7) of which is rectilinear and mounted on a rectilinear hinge post (11). The other vertical edge (8) engages a lock post (25), both of the latter have an outwardly extended shape as viewed transversely to the travelling direction of the vehicle. <IMAGE>
Patent GB-2009077-A (GB)
Title: Winch Mechanism for Crane
IPC: B66C23/72
Filed: 1978-11-24
Abstract: A winch mechanism includes a first 402 and a second 404 drum each having multiple grooves 404a, 402a therein. A frame supports the first drum spaced from the second drum with the axis of rotation of the first drum canted relative to the rotational axis of the second drum such that the grooves at the top of the first drum are substantially aligned with corresponding grooves at the top of the second drum and the grooves at the bottom of the first drum are substantially aligned with grooves adjacent to the corresponding grooves at the bottom of the second drum. A cable 200 is alternately wrapped between the grooves of the first and second drums with at least one of the drums being driven to draw in and feed out the cable. <IMAGE>
Patent GB-2011406-A (GB)
Title: Nitrogen bridgehead compounds
IPC: A61K31/519
Filed: 1978-12-28
Abstract: Compounds of the general formula   <IMAGE>  [wherein R and R<1> are H or C1-4alkyl,  or together form (CH=CH)-2,  R<2> is H or C1-4alkyl R<3> is H, C1-4alkyl, phenyl, carboxy or salt thereof, alkoxycarbonyl, carbamoyl, cyano,  -CO-NH-CO-SO2-C6H4-p-CH3 or -(CH2)s-COOR<14>  (s is 1, 2 or 3 and R<14> is H or C1-4alkyl,  n is 0 or 1,   (a) if R<13> is H, and R<12->R<11> and R<9->R<10> form bonds then YR<7>R<8> represents oxygen or sulfur, or  Y represents nitrogen,  R<7> is C1-4alkyl, optionally substituted C6-10aryl or C7-12aralkyl, R<8> is a lone pair of electrons or C1-4 alkyl and in this latter case a salt is formed; and  XR<4>R<5>R<6> represents halogen; or  XR<5>R<6> represents oxygen or sulfur,  and R<4> is H or C1-4alkyl,  XR<6> represents nitrogen and R<4> is chloroacetyl, C1-4alkyl or optionally substituted C6-10aryl or heteroaryl  and  R<5> is H or alkyl or   (b) if R<11> is H and R<9->R<10> and R<12->R<13> form bonds, then R<4>, R<5>, R<6>, R<7>, R<8>, X and Y are as defined in item (a) and   (c) if R<10->R<11> and R<12->R<13> form bonds, then YR<7>R<8>R<9> represents an oxygen or sulfur anion or YR<8>R<9> represents oxygen or sulphur and  R<7> is H or C1-4alkyl; or  YR<9> represents nitrogen, R<7> is H, C1-4alkyl or optionally substituted C6-10aryl, and R<8> is C1-4alkyl, and XR<4>R<5>R<6> represents halogen or an oxygen or sulfur anion or XR<5>R<6> is O or S and R<4> is H or C1-4alkyl, or  XR<6> represents nitrogen, R<4> is chloroacetyl, C1-4alkyl or optionally substituted C6-10aryl or heteroaryl  and R<5> is H or C1-4alkyl, and if YR<8>R<9> and XR<5>R<6> each represent oxygen or or sulfur or if YR<9> and XR<6> each represent nitrogen (R<5> and R<8> each being H or C1-4alkyl), then R<4> and R<7> together form optionally substituted -(CH2)-s (s is 1, 2, 3 or 4)] and the tautomers and salts thereof. The compounds have physiological activity.
Patent GB-2039297-A (GB)
Title: Electroplating flanged half bearings
IPC: C25D7/10
Filed: 1978-12-27
Abstract: This method of producing flanged half bearings includes the step of applying an electrically conductive protective coating to the bearing surface of the flanges before the assembled bearing has a plating electrolytically applied to the bearing surface of the liner. For example, a tin protective coating is applied to an aluminium-tin alloy flange to protect the alloy from immersion plating deposition of lead-indium alloy before lead-indium plating of the liner bearing surface in an electrolytic plating bath where the bearings are stacked in flange to flange contact. The bearing may comprise a steel backing and lead- bronze substrate.
Patent GB-2013332-A (GB)
Title: Improvements in or relating to optical detecting arrangements
IPC: G01D5/26
Filed: 1979-01-15
Abstract: An optical detecting arrangement for detecting movement of relatively movable parts 5, 7 to or from predetermined relative positions comprising light emitting means 1 associated with one of the parts 5 so that when the light emitting means 1 is energised the light emitted is transmitted through light transmitting means 10 associated with the other of parts 7 when the parts are located in the aforesaid predetermined relative positions whereby the transmitted light is received by light receiving means 2 associated with the one part. The detecting arrangement is especially applicable to security systems for doors, windows, safes, etc. in such applications the emitting means may conveniently be modulated and the receiving means output synchronously detected, both being attached to a fixed member.   The arrangement may be used as a switch, wherein an optical path is made or broken by operation of the transmitting means. <IMAGE>
Patent GB-2014303-A (GB)
Title: Area Measuring Machine with Means for Checking for Correct Operation
IPC: G01B11/28
Filed: 1979-02-08
Abstract: Area measuring machine e.g. for hides of the type having a conveyor 14 for conveying a hide H pasta plurality of wheels, each wheel 46 having a hide detector, e.g. lamp 26 and photocell 94, for detecting when a hide is being so conveyed and a signaling device, e.g. lamp 108 and photocell 92, by which a signal is supplied each time a wheel rotates through a unit distance, the signals from the signalling devices being counted when the hide detectors indicate the presence of a hide to indicate the area of the hide, wherein test means is provided for checking the function of the detectors and signaling devices in groups (or as a single group) by causing the signals for each group to be counted while the wheels are rotated by the conveyor through a fixed distance (for which the number of signals which should be supplied is known) in the absence of a hide and comparing the actual member of signals counted with such known number. Other test means also check (i) that the counters are operating correctly and (ii) that the detectors and signalling devices individually are operating. <IMAGE>
Patent GB-2017437-A (GB)
Title: Overload protection circuit for video amplifiers
IPC: H03F1/52
Filed: 1979-02-12
Abstract: To avoid excessive dissipation in a video output stage, particularly in Class B or C operation, signal transfer of higher frequencies, e.g. noise, is selectively attenuated. Accordingly transferred signals, e.g. en route to the output stage, are sampled 17, 15, differentiated 53, clamped 56, rectified 55 and then integrated 57 to switch on a normally off transistor 52 whenever high frequency signals are incident. Since the integrator 57 has a bleeder shunt 58, only high density high frequency signals will switch on the alarm transistor 52. If these occur, the video signal transfer is progressively reduced, e.g. by conditioning the output 62 of the luminance contrast control 60, whereof a resistance 65 may pass the collector current of the alarm transistor 52. <IMAGE>
Patent GB-2019064-A (GB)
Title: Transducer Circuit for Use in the Measurement of the Rotary Speed of a Shaft or Other Rotary Member
IPC: G01P3/489
Filed: 1979-03-20
Abstract: A transducer circuit includes a transducer device (10) connected to be driven by a rotary member the speed of which it is required to measure. The transducer device produces output pulses at specific angular positions which are counted by an n-bit counter (17) and which are also used to clock an m-bit latch circuit (16). Pulses from a clock pulse generator (11) are counted by an m- bit counter (13, 14, 15) which has its data outputs connected to the data inputs of the latch circuit (16). An output register (18) is connected to the n-bit counter (17) and the latch circuit (16) to receive an n+m bit code therefrom each time the m-bit counter (13, 14, 15) produces a carry out pulse. Thus the n+m bit code in the output register contains data relating to the number of pulses produced by the transducer device (10) in the fixed interval between carry out pulses and data relating to the number of pulses produced by the clock (11) between the start of that interval and the instant when the last transducer device pulse was produced. This data can be processed to provide an accurate m-bit speed code. <IMAGE>
Patent GB-2018826-A (GB)
Title: Electrode
IPC: C25B11/03
Filed: 1979-04-03
Abstract: An electrode especially for electrolysis where gas is evolved is constructed of a plurality of metallic screens of woven wire mesh, the screens being stacked together and electrically united e.g. by direct spot- or tack-welding or by way of conductive spacers or a mass of wire wool.
Patent GB-2052792-A (GB)
Title: Apparatus for discharging liquid at a constant rate
IPC: F16K21/02
Filed: 1979-06-28
Abstract: Liquid is discharged at a constant rate by maintaining a constant head of liquid E<1> above the feed point D<1>. The apparatus has a feed vessel B<1> open to the air and containing liquid which is conducted, under the pressure of the constant head of feed liquid, through a flexible tube C<1> discharging at the feed point. The head is kept constant by suspending the feed vessel B<1> from a helical or coiled spring assembly A<1> which, being gradually relieved of the load upon it as the feed vessel empties, raises the feed vessel and and the feed liquid therein at the same constant rate as the rate of fall of the depth of the liquid in the feed vessel. The duration of the constant drip or flow from any one such apparatus is increased by discharging into it the liquid from another such apparatus A<2>, B<2>, D<2>. <IMAGE>
Patent GB-2032555-A (GB)
Title: An improved means for effecting a friction coupling between inner and outer, relatively axially movable members
IPC: F16L19/06
Filed: 1979-07-02
Abstract: The invention provides a friction coupling, e.g. between a pipe (4) and a collar or nut (1) surrounding the same, in which a force-applying ring (2) acts on a sleeve (3) by means of abutted frusto-conical surfaces of which that on the axially elongated sleeve (3) is between differently-shaped end portions, the sleeve (3) being so shaped that the clamping force it exerts on the inner member or pipe (4) is substantially uniformly distributed along the length of the sleeve (3). The sleeve (3) may have a detachable, resilient nose portion (5) for sealing engagement with a member (6) screw-threadedly engaged by the collar or nut (2). <IMAGE>
Patent GB-2029136-A (GB)
Title: Speed control circuit for a direct current motor having armature control
IPC: H02P7/00
Filed: 1979-07-03
Abstract: A direct current motor 12 is controlled by a switching transistor bridge 20, 22, 28, 30 responsive to comparators 50, 52, 56, 58 controlled by a signal 44 and a sawtooth 54, operation being such that comparators 50, 52 cycle transistors 20, 30 on and off in phase opposition, whilst comparators 56, 58 permanently hold one of transistors 22, 28 on and the other off, or vice versa, according to whether the signal 44 represents one or other direction of rotation of the motor, the signal level determining the cyclic ratio and hence the motor speed. Diodes 32, 34, 38, 40 maintain motor current during transistor off periods and diodes 38, 40 complete a rheostatic braking circuit through the motor, resistor 42 and transistor 22 or 30, when signal 44 is reduced below the range producing speed reduction only by reduction of the cyclic ratio. Excess braking current detected by members 36, 70 turns off transistor 22 or 30 to produce regenerative braking through diode 32 or 34. When signal 44 is changed to reverse the motor, braking occurs through circuit 12, 30, 40 or 12, 22, 38 in addition to the cyclical reverse current braking through circuit 28, 12, 30 or 20, 12, 22. Excess driving current detected by members 42, 80 causes transistor 20 or 28 to turn off. Bridge short circuits are prevented by comparator 90 receiving the sawtooth 54 and a reference and controlling comparators 52, 58 to block and unblock transistors 22, 30 when the sawtooth is respectively greater than the reference and less than signal 44. <IMAGE>