baber/WOPTO huggingface dataset:
Patent GB-1024714-A (GB)
Title: Fluid pressure operated clutch
IPC: B26D1/00
Filed: 1964-04-09
Abstract: 1,024,714. Friction clutches. BROWN MACHINE CO. April 9, 1964 [April 26, 1963], No. 14712/64. Headings F2C and F2L. A friction clutch comprises a driving disc 41 fast with an input gear 43 and slid axially to engage a floating friction ring 40 mounted on a driven disc 39 by means of air under pressure admitted to a chamber 30 and acting on a diaphragm 21 which acts through axially slidable pins 36 on a thrust washer 37 mounted on a ring 38 which abuts the input gear 43. The driving disc 41 is mounted for axial and rotational movement on a driven shaft 11 by way of a bearing 42. The chamber 30 is formed in a housing 12 carried by the driven shaft. The clutch may be employed in a plastic forming machine to provide a material advancing stroke, and for this purpose the input gear 43 is driven by a rack 44 reciprocated by a double-acting pneumatic motor 46 supplied from a source 54 under the control of a reversing valve 47. In operation, a timer T initially closes contacts 57 and energizes a solenoid 58 so that the valve 47 admits air to the motor 46 through a line 48 and the rack is moved downwardly. A solenoid 52a of a valve 52 is also energized so that air from the source 54 is supplied to the clutch chamber 30 to engage the clutch. At the end of the stroke of the rack 44 an arm on the rack opens a normally closed limit switch 51 to de-energize the solenoids 52a, 58 so that the clutch is disengaged and the motor 46 moves the tack upwardly. A one-way clutch may be provided between the output shaft 11 and the machine frame to prevent reverse rotation. At the top of its stroke the rack engages a stop screw and remains in this position until the timer T again closes the contacts 57 to start another cycle.
Patent GB-180683-A (GB)
Title: Improvements in and relating to wireless signalling systems
IPC: H01Q11/02
Filed: 1922-05-25
Abstract: 180,683. British Thomson - Houston Co., Ltd., (Assignees of Beverage, H. H.). May 25, 1921, [Convention date]. Aerials; undesired signals, eliminating.-Relates to aperiodic receiving-aerials of the kind described in Specification 175,315 comprising two long parallel conductors 1, 2 grounded at the ends 3 and 4, whereby an initial selection is made between signal energy passing through the ether in one direction and signal energy travelling in the opposite direction, and consists in means for eliminating interference between the desired signals and signals travelling in the same direction and of approximately the same wave-length. Signal energy travelling in the direction from 3 to 4 would normally create a maximum effect in the aerial at the end 4, but as the coil 7 is grounded at its mid-point, such signals will not affect the receiver 10. On the other hand, signal energy in the opposite direction would give rise to a maximum effect at the end 3, and might ncrmally be received there. In order however to retain the receiving-apparatus at the end 4, whilst receiving desired signals culminating at the end 3, the mid-point of the coil 6 is grounded through a coil 5 which then acts as a primary to induce the current discharge through the coil 6 as a secondary, back into the conductors 1, 2 along which the signalling currents flow in opposite directions so as to have a cumulative effect across the coil 7 and its secondary 8 of the receiver 10. An adjustable resistance 9 prevents reflection of the currents from the ground point 4. In order to eliminate interference from signal-energy flowing in the same direction as the desired signals, one or more circuits 12, 13 tuned to the undesired signal-frequency are inserted in shunt to the primary 7, as shown in Fig. 1, so as to offer a path of low impedance to such signals and divert them from the receiver 10. Fig. 3 shows equivalent interference shunts arranged in bridge formation. The arms 19, 20 are each made up of two parallel shunts 21, 22 tuned, say, one above and the other below the desired signals, so that the points 25 and 26 are equipotential for such undesired frequencies which do not therefore affect the receiver 10, whereas the bridge is unbalanced for the desired signals. By choosing suitable constants, the resultant impedance of the shunts 21, 22 may be made individually inductive and capacitive with respect to the desired signals, and may then be mutually tuned so as to form a substantially infinite impedance trap for that frequency, the result being the same as though the desired currents were impressed upon the receiving-apparatus solely through the resistances 23, 24.
Patent GB-1506794-A (GB)
Title: Circuit arrangements for protecting couplings
IPC: G01P3/60
Filed: 1976-04-12
Abstract: 1506794 Measuring clutch slip electrically WERNER & PFLEIDERER 12 April 1976 [31 May 1975] 14851/76 Heading G1N [Also in Division F2]  A friction clutch 5 between an input shaft 3 and an output shaft 4, which slips on overload, has its input and output speeds measured by pulse transmitters 9.1, 9.2 respectively whose pulses are supplied to the forward and backward inputs 7, 8 of a forward-backward counter 6 whose count is passed at intervals determined by a resetting time base 15 to a decoder 16 and if the count is above a predetermined minimum, the decoder actuates a signal generator 17. Signal generator 17 operates an optical or acoustic warning 18 and may also disengage the clutch through a device 19. Between the pulse transmitters 9.1 and 9.2 and the counter 6 there are provided pulse formers 11 and a twochannel decoupler. The decoupler comprises  bistable triggers 11, interconnected AND gates 13.1, 13.2 and delays 14 and ensures that signals are not supplied simultaneously or in very quick succession to the counter 6, which could confuse it. Timing elements 20 disconnect the clutch if no signals are received in a predetermined time. For reconnection of the clutch there may be a speed monitor provided which resets the signal generator 17 only when the speeds of shafts 3 and 4 coincide to within permitted limits which speed monitor may comprise a timing element 20, which would sense that the speed of the driving clutch part is sufficiently slow.
Patent GB-738429-A (GB)
Title: Improvements in and relating to the control of alternating current electric motor equipments
Inventor: PARR RONALD
IPC: H02P3/18
Filed: 1953-05-29
Abstract: 738,429. Control of A.C. motors; controllers. METROPOLITAN-VICKERS ELECTRICAL CO., Ltd. May 21, 1954 [May 29, 1953], No. 15027/53. Class 38 (3). [Also in Group XXXIX] An induction motor driving a winder is braked by supplying its stator winding 2 with direct-current derived from a rectifier 9 which is controlled by transductor 15, phase-shift circuit 16, and peaking circuit 17. When the dynamic braking operation is initiated, the liquid rotor resistance 6 is at its maximum value, and, during the early part of the lowering movement of the electrodes 7, contacts 21 are open so that the control winding 42 of the transductor is de-energized and the output of the rectifier 9 is dependent solely upon the current supplied to control winding 41. This current is controlled by potentiometer 18 the moving contact of which is coupled to the electrodes 7, the motor excitation being increased as the rotor resistance is reduced. At a predetermined position of the electrodes 7, a mechanical member 50 closes contacts 21 which remain closed until the lowermost position of the electrodes is reached. The control winding 42 is thus energized in accordance with the rotor current of the motor, whereby, as the rotor resistance is further reduced, the excitation of the motor is increased in accordance with the increase of rotor current but independently of the position of the movable electrodes, the potentiometer 18 being arranged so that the voltage applied to the winding 41 is not varied after the contacts 21 have closed. The transductor 15 is of the double-cored type having series-connected output windings 32, 33, connected in the input circuit of the phase-shifting circuit 16. The transductor also has feedback winding 40 and biasing winding 43. The windings 41, 42 act in the same direction with the winding 40 and are opposed by the winding 43. The phase shift circuit is arranged so that increase of the output current of the transductor will increase the motor excitation. The liquid rheostat is controlled by lever 22 through a fluid pressure servo device 23 having control valves and operating means 28. The device 28 may comprise a circuit for maintaining the actual speed of the motor substantially equal to the desired speed at any position of the winder. In a modification, a polarized rectifier circuit may be employed instead of the contacts 21, so that energization of the winding 42 is prevented until the voltage across resistor 49 exceeds a predetermined value. The rectifier 9 may be replaced by an exciter or magnetic amplifier.
Patent GB-452531-A (GB)
Title: Improvements in and relating to breast bars and mills for grinding, refining, finishing, and other processes
IPC: B02C4/34
Filed: 1935-05-24
Abstract: 452,531. Roller - and - breast mills. COX, H. E., 131, City Road, Bristol. May 24, 1935, No. 15133. [Class 59] In a mill having two breast bars, the two bars are so arranged that they are moved collectively as a unit by a common control or are capable of separate adjustment towards or from the roll periphery. As shown in Fig. 1, a slide 1 has attached thereto a breast bar 2 and is provided with a rebate 7 which forms with the lower part 9 of the bar housing 8 a guide for a movable bar 3. The bar 3 is moved relatively to the slide 1 by a spindle 10 screwed into the block and having a thrust collar 11 engaged in a slot in the slide 1. The slide 1 is attached to a pressure bar 18, Fig. 2, by adjustable studs 19 the bar 18 being adjusted toward the roll 6 by screws 17 with or without spring pressure. The pressure bar 18 may be pulled toward the roll by spring pressure. Both breast bars may be made adjustable in the slide 1.
Patent GB-273085-A (GB)
Title: Improvements in bi-fuel supply systems of internal combustion engines
IPC: F02M1/00
Filed: 1926-06-16
Abstract: 273,085. Guibiansky, J. June 16, 1926. Cylinders receiving liquid fuel; spray carburettors. - Passages for light and heavy liquid fuels are controlled by a piston subjected to the expansive force of a liquid heated by the combustion in the cylinder. A piston E, F in a. cylinder B is loaded by an adjustable spring K and is actuated by the expansion of liquid in a container A connected to the cylinder B by a pipe, C. Heavy fuel may enter at Hand light fuel at L and a pipe J leads to the engine. The piston carries a rod 0 which may serve as a temperature indicator. In a modification, Fig. 4, the piston passes through the top of the cylinder B and carries a crosshead P loaded by springs U. An extension of the piston ends in a fork P<1> having a cross-pin X with which engages a lever V<1> connected to the spindle O<1> of a three-way valve controlling the fuel passages. Two two-way valves may replace the single three-way valve.
Patent GB-147543-A (GB)
Title: Improved process for the extraction of ethylene from gaseous mixtures containing it
IPC: C07C305/26
Filed: 1920-06-04
Abstract: Ethylene-containing gases, such as gases from coke-ovens or from lignite, are treated with halogensulphonic acids, such as chlorsulphonic acid or fluorsulphonic acid, to produce ethylhalogensulphonates, which can be hydrolyzed to alcohol by water.
Patent GB-461857-A (GB)
Title: Improvements in or relating to re-inforced india rubber and other plastic articles
IPC: F04B53/10
Filed: 1936-05-29
Abstract: 461,857. Valves. LORD, E., and WEBSTER, W. K. May 29, 1936, No. 15237. [Class 135] [Also in Group XXVIII] A valve for diaphragm &c. pumps, air compressors, &c., comprises an annular member of rubber or other plastic material reinforced by radial springy metal or woven with strips connected at their inner ends to a ring and embedded in the plastic material. As shown, a dish-shaped member 3 of rubber &c. has embedded therein perforated radial, U-shaped strips 1 of springy metal secured at their inner ends to a flat ring 2.
Patent GB-858736-A (GB)
Title: Improvements in or relating to balling drum apparatus
IPC: C22B1/24
Filed: 1959-05-04
Abstract: 858,736. Granulating-machines. KOPPERS CO. Inc. May 4, 1959 [Sept. 10, 1958], No. 15260/59. Class 87(2). Finely divided material, e.g. iron ore, fly ash, and glass grinding waste is pelleted by feeding it along a conveyer 21 to a rotating drum 10, having baffles 31 with inclined deflectors 32 between the baffles. The spacing between the baffles and their height decreases from the feed to the discharge end. -Fixed, but adjustable scooops 19a and scrapers 13 are provided between the baffles. The drum 10 is rotated on idler rollers 23.
Patent GB-1425235-A (GB)
Title: Digital data processing apparatus
IPC: G06F12/00
Filed: 1973-03-30
Abstract: 1425235 Allocating resources INTERNATIONAL BUSINESS MACHINES CORP 30 March 1973 15306/73 Heading G4A In a data processing system in which two or more concurrently executed, e.g. time shared, processes may request temporary exclusive or shared access to a number of resources, e.g. stored data segments, hardware &c., access requests are granted or refused in accordance with the natures of the current and any previous requests and a deadlock latch is set whenever an access request is not granted, the latch being tested periodically and, a routine is executed when the latch is found to be set to determine from stored data tables indicating which processes currently require and have access to each of the resources whether a " deadlock " exists where two or more processes are suspended due to pending mutually conflicting granted and refused access requests. The arrangement may be used in single or multiprocessor, multiprogrammed systems, e.g. for airline seat reservations, and is contrasted from the prior art, e.g. see Specification No. 1,275,535, where deadlocks are predicted before program execution, and Specification No. 1,240,978 where a deadlock identifying routine is entered each time a process is suspended. The system maintains tables each indicating for a particular process or resource what access requests have been made and whether they have been granted or not. The procedure is illustrated in Table 1 with the deadlock test latch being set whenever an access request is made for a resource for which a previous exclusive request has been made, whenever an exclusive access request is made for a resource for which a previous shared access request has been made, and whenever a shared access request is made for a resource for which a previous access request was refused. Otherwise the current access request is granted, the tables being updated in either case.
Patent GB-136479-A (GB)
Title: Improvements in or relating to Spikes.
Inventor: BALFOUR EVA LOUISA DULCIE BAGG
IPC: E01B9/06
Filed: 1919-06-19
Abstract: 136,479. Balfour, E. L. D. B., and Balfour, J. W. B. June 19, 1919. Spikes.-A spike, adapted for use as a railway dog spike, is serrated on one side and has a tapered point so that, upon being driven into wood, it is bent. The spike comprises a parallel part 2 near the top, and then on one side a series of notches 3 each formed by a downwardly and inwardlv inclined surface 4 followed by a downwardly and outwardly inclined surface 5, the inclination to the vertical of which must not be less than 40 degrees or more than 60 degrees. The bottom portion 6 of the side is vertical. The opposite side of the spike is plain and tapered as at 7, and terminates in an inclined portion 8 making an angle not less than 40 degrees and not more than 60 degrees with the vertical portion 6. The remaining sides of the spike are vertical and parallel, unless it is required to obtain a deviation of the spike from the planes of these sides, in which case the bottom portion is bevelled according to the direction in which deviation is required.
Patent GB-474258-A (GB)
Title: Improvements in or relating to windings for induction machines
IPC: H02K17/16
Filed: 1936-06-02
Abstract: 474,258. Alternating - current motors. KAUDERS, V. June 2, 1936, No. 15432. [Class 35] The conductors of an induction motor secondary form short-circuited coils with a pitch not exceeding half that of the poles and some or all of the end con. nections are connected together through impedances, the arrangement being such that for some or all of the slots opposite sides of two coils are disposed in the same slot. The impedances may be formed by extensions of the conductors. In the form shown in Fig. 6, all the bars have a common ring 7 at one end and the extensions of the bars in the core 13 serve as impedances. In a modification, the bars pass straight through aligned slots in both cores and the two conductors in alternate slots may be directly connected through part or all of their lengths. In another form, each conductor is directly connected to a bar in the adjacent slot and the junction is connected to an impedance, the other terminal of which is connected to a ring common to all the impedances. In a further modification, the slots in the two core portions are in alignment but the conductors in one core connected to conductors in the other are staggered. In the form shown in Fig. 12, the conductors 25 in alternate slots pass straight through both cores and are connected at their mid points 28 to conductors in the other slots. In the form shown in Fig. 14, conductors in alternate slots in the same core 121 are connected together and to similarly situated conductors in the second core 122. The stator co-operating with one core section is angularly adjustable. Specifications 4170 /94, 118,102, 136,156, and 140,745, [all in Class 35], are referred to.
Patent GB-296816-A (GB)
Title: Improvements in apparatus for printing sound and picture records upon a film
IPC: G03B31/00
Filed: 1927-06-10
Abstract: 296,816. Beatty, W. E., (Bell Telephone Laboratories, Inc.). June 10, 1927. Records, combined phonographic a n d kinematographic.- A photographic printing machine, for printing sound and picture records from a single negative. film on to a positive film, comprises a main casing 10 having a source of light 12 and an aperture 19 for applying light to one of the records and a supplementary casing 28 carried by the main casing and having a source of light 25 and an aperture 27 for applying light to the other record. As shown, the supplementary casing 28 is L-shaped and is detachably mounted on the main casing and is for printing the sound record. The aperture 19 has an adjustable shutter 20 for controlling the exposure of the pictures, and the intensity of the light of the sound printing lamp 25 may be adjusted by controlling the current. The positive film 13 and negative film 14 are fed across the printing apertures by rollers.
Patent GB-732450-A (GB)
Title: Wood stain using optical brighteners
IPC: B27K5/02
Filed: 1952-06-20
Abstract: A method of finishing wood surfaces comprises applying a composition containing an optical brightener dissolved in an organic solvent vehicle.  The optical brighteners are hydroxy coumarin; 1-naphthylamine-4-sulphonic acid; sodium 2-naphthylamine-6,8-disulphonate; dibenzoylamino - stilbenesulphonic acid derivatives; naphthalene; 2-styryl - benzimidazole; 1 - (m - acetamido - 2-benzimidazole) - 2 - (p - acetamidophenyl) ethylene; triazine condensation products; 2,21 - ethylene bis - (1 - benzylbenzimidazole); o - alkoxy - benzoyle derivatives of 4,41-diamino - stilbene - 2,21 - disulphonic acid; b -methyl-umbelliferone; and 4-methyl-7-diethylamine coumarin.  The organic solvent vehicle may comprise glycol, mono-methyl ether of ethylene glycol, mono-ethyl ether of ethylene glycol, mono-ethyl ether of diethylene glycol, methanol, alcohol, butyl alcohol, ethyl acetate, butyl acetate, toluol, xylol, and naphtha.  The optical brightener in the solvent may be applied direct to the wood; or the optical brightener may be applied in a solvent containing a wood dye, with or without pre-treatment of the wood with optical brightener in solvent.  The optical brightener may also be included in a lacquer sealer and/or in a gloss lacquer.  The composition contains 0.002 per cent to 1.0 per cent of the optical brightener.
Patent GB-911246-A (GB)
Title: Improvements in and relating to hydration and dehydration processes and to catalyststherefor
Inventor: MOSS RAYMOND JACKSON
IPC: C07C37/055
Filed: 1960-05-04
Abstract: Hydration-dehydration catalysts comprising thoria supported on a -alumina. are prepared by treating a -alumina in the solid phase to produce a deposit of thoria in its pores.  They are suitable for catalysing the hydration of diphenyl oxides to the corresponding phenol or phenols as well as the reverse dehydration.  They may be prepared by impregnating a -alumina which may be pelleted, with a solution of a thorium salt, e.g. the nitrate, and converting the salt to thoria; alternatively the alumina may be impregnated by teating it in aqueous suspension with a solution of a thorium salt.  In this case it is preferably treated with ammonia to precipitate thorium hydroxide which is then converted by heating to thoria.  Catalysts are preferred which contain about 25% thoria by weight of the alumina and which are in the form of pellets.  The a -alumina may be obtained by firing alumina for 6 hours at 1000-1500 DEG C.  The catalysts are regenerated by heating in a stream of air at 500 DEG C.  The example describes the preparation and use of the catalysts.ALSO:The hydration of diphenyl oxides to a phenol or phenols and the corresponding dehydration is effected in the presence of a catalyst comprising thoria supported on a -alumina (see Group III).  The reactions are preferably performed in the vapour phase at atmospheric pressure and elevated temperature, e.g. for diphenyl oxide itself 475 DEG C.  The process may be carried out in successive cycles of reaction and regeneration, being accomplished by heating the catalyst in a stream of air at 500 DEG C.  Specified reactants are diphenyl oxide, bis(p - methylphenyl)oxide, phenol p  and p-cresol.  In the example diphenyl oxide is converted to phenol.
Patent GB-1199686-A (GB)
Title: Improved means for Retaining Tubes in End to End Relationship
Inventor: WILDRIDGE BRUCE CHARLES RICARD
IPC: F16B7/04
Filed: 1968-04-02
Abstract: 1,199,686. Pipe joints. B. C. R. WILDRIDGE. 31 March, 1969 [2 April, 1968], No. 15720/68. Heading F2G. [Also in Division E2] The ends 1 and 2 of tubes for use in the erection of road signs are connected in abutting end relationship by an internal clamp comprising two opposed elongated members 12 and 13, each received in the ends of the tubes and urged laterally apart to grip the tube ends by a screwthreaded pin 15 screwed in a boss 5 of member 12 and engageable with a depression in a projection 18 formed on the member 13. A co-operating opening is provided in the tube 1 to permit access to the keyed head of the screw. As shown, each member is of C-shaped cross-section. The elongated members may be initially located in one tube by a rod passing through registering holes in the members and one of the tubes. Alternatively, one of the elongated members may be secured to one of the tubes as by welding, riveting, or bolting, or by an adhesive. The outer surfaces of the clamp may be provided with a frictional surface covering of plastics material. The tubes and clamp may be of metal or plastics.
Patent GB-889742-A (GB)
Title: Improved means for measuring the amount of depression of railway sleepers under load
Inventor: TUSTAIN IVY
IPC: E01B35/00
Filed: 1959-05-07
Abstract: 889,742. Rail depression gauges. ABTUS Ltd. May 9, 1960 [May 7, 1959], No. 15754/59. Class 105. [Also in Group XIX] A meter for measuring the depression of railway sleepers under load of passing railway stock comprises a double-armed lever 13 pivotally mounted on a base 12 and having one end 13a formed for location beneath a rail adjacent a sleeper. When end 13a is depressed the other end 13b, which has a scale 14 on an arcuate flange 13c, is moved relative to an adjustable arm 18 having an arcuate flange 20 which acts as a pointer to indicate the amount of deflection.