baber/WOPTO huggingface dataset:
Patent GB-1422247-A (GB)
Title: Method of producing casting moulds for precision casting
IPC: B22C1/20
Filed: 1973-03-16
Abstract: 1422247 Forming refractory moulds HITACHI Ltd 16 March 1973 [21 March 1972] 12688/73 Heading B5A [Also in Division C3] Moulds for precision casting are prepared from a slurry comprising a powdered refractory, a binder formed by hydrolysing ethyl silicate with less than the theoretical amount of water and a gelling promoting agent in such an amount that gelling will commence in 5-8 minutes after introduction of the slurry into a shaping mould by introducing the slurry into a shaping mould, removing the casting mould produced as soon as it has solidified sufficiently to be non-flowable, contacting it with water containing a surface active agent and/or a water-soluble silica sol to harden it completely and finally drying and calcining the mould. The refractory material may be zircon sand, chamotte powder or fused silica. Initial hardening of the slurry may be effected by contacting it with the water while still in the shaping mould.
Patent GB-1024784-A (GB)
Title: Method and apparatus for collecting rod-like articles
Inventor: KOCHALSKI HORST
IPC: A24C5/354
Filed: 1961-03-23
Abstract: 1,024,784. Conveyers; packaging machines. K. KÍRBER. April 19, 1962 [March 23, 1961; April 13, 1961; Aug. 14, 1961], Nos. 12713/61, 13294/61 and 12708/62. Divided out of 1,024,781. Headings B8A and B8C. Cigarettes C which may be irregularly spaced on a conveyer belt 11 are fed by the latter up to a stop 13 (Fig. 1, not shown) which thus arrests the leading cigarette and causes the succeeding cigarettes to back up into a continuous row. When the length of the row reaches a predetermined length the force exerted by the leading cigarette is such as to operate a switch 14 connected to the stop 13. This initiates the upward movement of lifting rails 20, 21 (see also Fig. 4, not shown) the last cigarette of the row is not engaged by the rails 20, 21 but is held by a suction jet 30 connected with the framework supporting the rails. A surface 15 of the rails arrests the leading cigarette of those left behind. A transfer member 16 moves in a direction parallel to the axes of the cigarettes to move the row on the rails 20, 21 (dot-dash lines, Fig. 4, not shown) into position above a previously delivered row. In Fig. 7 the rails 20, 21 are dispensed with and the delivery member 16 is formed with a camlike projection which engages the upper surface of the edge of the belt to cause the member 16 to lift about the axis of the hinge 35 and so lift the cigarette C off the surface of the belt 11. This action is augmented by the action of a cam 36 engaging the underside of the member 16. The cam 36 may be in the form of a roller which engages a cam-shaped surface 37 of the member 16. The other edd of the cigarette is lifted by engagement with a cam surface 33 on a guide member 32. In a modification of Fig. 7 (Fig. 9, not shown) the member 16 does not itself lift but it carries a member 41 which lifts due to the interaction of a cam surface 43 and roller 44 to engage the end of the cigarette as shown in dot-dash lines at 41a. The stop 13 and associated switch 14 of Fig. 1 may be replaced by a rotary switch (Fig. 11, not shown) consisting of a drum 50 which is in frictional contact with the cigarettes lying on the belt 11. The drum 50 is rotatable about a shaft 52 which is constantly driven by a belt 57 and pulley 56. An inner drum 58 rigid with the shaft 52 carries a switch contact 65. A further contact 61 is rigid with the drum 50. The latter is connected by a spring 62 with the drum 58. In operation, when cigarettes are being delivered by the belt 11 up to a fixed stop the shaft 52 rotates through the action of the spring 62, the drum 50, in a sense to back-up the cigarette C on the belt 11. When the leading cigarette engages the fixed stop and eventually the cigarettes back to the drum 50 have all backed up solid the additional resistance incurred by the drum 50 causes the latter to slow down and the contact 65 thereby comes into engagement with the contact 61. Contact is thus made through ring gear 68, 69 and leads 72, 73 to switch mechanism which initiates operation of the row delivery mechanism.
Patent GB-714912-A (GB)
Title: Improvements in electro-mechanism for following a moving body which moves within given limits
IPC: G05D3/14
Filed: 1950-05-22
Abstract: 714,912. Electric follow-up systems. LEBAR, M. L. May 22, 1950 [May 23, 1949], No. 12765/50. Class 40 (1). The control or the follower member of a follow-up switch has an auxiliary member pivoted thereto for' limited movement, and biassed in a direction tending to close two switches located between the auxiliary member and the control or follower member. Both switches are closed at coincidence and are opened selectively to control the follow-up motor according to the sense of the control member movement. A further contact is provided for slowing down the motor as coincidence is approached. As shown, a balance beam 1, Fig. 2, pivoted at 9 carries a pintle 3 whose axis intersects the axis of the pivots 9. Rotatably mounted on the pintle axis is a conducting plate 2 which in the position of balance shown, contacts with both contacts 11, 12 of a follower mechanism 13. Movement of the beam in either direction e.g., from position A, Fig. 1, to positions B or C causes anti-clockwise rotation of the plate 2 and opening of contacts 11 or 12 according to the direction of movement of the beam. The contacts 11, 12 when normally closed bias corresponding triodes 21, 22, Fig. 3, to cut-off. Opening of one of these contacts causes the corresponding triode to conduct and operate associated relay pairs 31, 34 or 32, 33 to drive the follow-up .motor 17 in the corrective sense, the motor moving the follow-up beam 13 along guides 14, 15 through a screw 16. The beam 1 carries a further auxiliary contact lever 6 urged by a spring 8 into contact with the plate 2 at 7. The lever 6 tends to follow any angular displacement of the plate 2 but adjustable stops 4, 18 limit its displacement to a small value, so that for any larger displacement of the plate 2, the auxiliary contacts 7 open. This permits a normally blocked triode 23, Fig. 3, to conduct thereby energising a relay 33 to speed up the servomotor 17 by short circuiting a resistor 36 in the circuit thereof. Similarly the motor is slowed down as coincidence is approached by closure of contacts 7. The motor may actuate a weight indicator. The follow-up mechanism may alternatively be applied to a steelyard in which case the "follower" contacts control the counterweight.
Patent GB-148272-A (GB)
Title: Improvements in or relating to variable-speed epicyclic gearing
IPC: F16H3/66
Filed: 1920-05-08
Abstract: 148,272. Desmoulins, E. July 19, 1919, [Convention date]. Variable-speed epicyclic gearing comprises a train f, g, j the end elements of which are driven alternatively or simultaneously from two countershafts a', a<2>, the element not driven being arrested. Additional speeds are produced by driving the train solid from the shafts a<1>, a<2> severally. Gears b<1>, b<2> loose on the shafts a<1>, a<2> and adapted to be connected thereto by clutches d<1>, d<2> mesh with a gear b on a driving-shaft a Worm or other gearing e<1>, c<2> connects the shafts a<1>, a<2> to the elements f, j. The bevel nr spur planet elements g are carried by a sleeve h connected through a clutch p to a sleeve c to be driven. The clutches d', d<2> and brakes m<1>, n are connected to pedals s<1>, s<2> so that as a clutch on one shaft is engaged, the other shaft may be held by a brake, while both clutches may be engaged when both brakes are off. The solid drives of the epicyclic train are effected by engaging the clutch p, and at the same time a clutch k connecting the gear j to the sleeve c. Reversed driving is effected by driving the gear f, arresting the carrier of the planet gears g by a brake m<2>, and connecting the gear j to the sleeve c. The invention is applicable for driving vehicles on land, on water, or in the air.
Patent GB-900918-A (GB)
Title: Improvements in and relating to domestic space heating systems
IPC: F24D3/02
Filed: 1960-04-11
Abstract: 900,918. Systems for heating buildings; hotwater supply systems. LAZNOVSKY, M., KRATOCHVIL, A., and POLANSKY, A. April 11, 1960 [April 13, 1959], No. 12908/60. Classes 64 (1) and 64 (2). Steel or synthetic resin pipes 10, which conduct hot water to space-heaters 11, have an inner diameter of 5, 6, 8 or 10 mm. and the flow induced within them by a pump 7, which may be at the outlet of a hot-water tank 1 or, as shown, at its inlet, is said to be laminar. As shown, steam from a boiler house common to a number of flats passes via pipes 4, under the control of a temperature-sensing element 13, through the heat-exchanging tank 1 in which the space-heating water for a flat is heated by the steam and in turn heats a draw-off supply in a unit 2. The steam passes through a heatmeter 6. Heating may be controlled by switching the pump on or off or by by-passing the tank 1 by means of a valve 15 operated according to the temperature of the water in a distributer 9.
Patent GB-700283-A (GB)
Title: Improvements in or relating to level regulating means in multichannel carrier frequency transmission systems
IPC: H04B3/12
Filed: 1952-05-21
Abstract: 700,283. Automatic volume control. TELEFONAKTIEBOLAGET, L. M. ERICSSON. May 21, 1952 [May 21, 1951], No. 12910/52. Class 40 (4). In a pilot receiver for automatic level regulation in a carrier communication system, the pilot current produces two currents for the control of a pair of gain regulating thermistors, which currents vary in dependence on variations of the pilot level and in mutually opposite directions. The voltage V1 across the secondary of transformer 101 derived from the filtered pilot current Vp applied to terminals 1, 2 is amplified in valves 10 and 11 before being applied through a limiter comprising rectifiers 108, 109 to an output amplifier 12. A voltage Vo is fed back to the input of the upper amplifier from the secondary of a transformer 110 in the input circuit of amplifier 12. Since the voltage produced in the lower amplifier reaches its maximum value with a very low value of input voltage Vp, the voltage V1 induced in the secondary of transformer 201 is small and the opposing feed-back voltage Vo across resistor'9 9 swings the grid of the second triode in valve 10 in antiphase with the lower grid. As the pilot current increases the grid voltage on valve 10 and in consequence the output of the second triode portion of valve 12 pass through zero to be in phase with the output from the lower amplifier chain. The upper amplifier chain also includes a limiter and the output currents are as shown in Fig. 2. In the output circuit load 26 is fed with the difference or sum of the two outputs iI, iII according to whether they are in phase or out of phase and load 27 is fed with the sum or difference respectivelv. Alarm relays 13 and 16 are included in the two amplifier chains to indicate changes exceeding a certain predetermined limit and pilot failure respectively.
Patent GB-936618-A (GB)
Title: Improvements in the development of electrostatic images
IPC: G03G9/12
Filed: 1960-04-11
Abstract: 936,618. Developing electrostatic images. RADIO CORPORATION OF AMERICA. April 11, 1960 [April 24, 1959], No. 12911/60. Class 98 (2). An electrostatic image on an insulating or photoconductive surface is developed by heating finely divided electroscopic developer particles dispersed in an insulating thermoplastic material having a melting point within the range of 50 to 200 C. to melt at least a portion of the developer and contacting molten developer across the image-bearing surface to produce a visible image. The developer may be melted and applied by a heated roller, a heated doctor blade or by heating a solid developer-bearing sheet in contact with the image bearing surface, or by passing an image-bearing sheet having developer along one margin beneath a heated roller. The developer particles may be carbon black or other pigments or dyes, alone or with vinyl chloride-acetate copolymer particles and dimethyl polysiloxane dispersed in paraffin wax, carnauba wax, microcrystalline wax, non- crystalline hydrocarbon waxes, or gum rosin, any of which may be mixed with a thermoplastic hydrocarbon terpene resin, chlorinated bi- and poly-phenols, stearic acid or polythene.
Patent GB-916079-A (GB)
Title: Voltage grading of insulators
Inventor: MCNEILL WILLIAM ALEXANDER
IPC: H01B17/48
Filed: 1960-04-11
Abstract: 916,079. Insulators. DOULTON & CO. Ltd. April 7, 1961 [April 11, 1960], No. 12925/60. Class 36. An insulator comprises porcelain segments 5 bonded together and having a semi-conducting glaze on their interfaces, to provide condenser electrodes. The area of the glaze on each face may be progressively varied for uniformity of voltage stress along the insulator. The segments 5 may be cup-shaped or in the form of discs. Specifications 577,748 and 586,064 are referred to.
Patent GB-1174466-A (GB)
Title: Vertical Reference System.
IPC: G01C21/18
Filed: 1967-03-20
Abstract: 1,174,466. Control system. CATERPILLAR TRACTOR CO. March 20, 1967 [April 11, 1966], No. 12945/67. Heading G1N. Deviations of, for example, an earth moving vehicle Fig. 1 (not shown) about its longitudinal axis from the vertical as defined by a vertical reference such as an electrolytic potentiometer 26, Fig. 2 whose angular position is maintained by a variable gain feedback arrangement, are sensed by means such as a potentiometer 39 and used to control a member such as an earth moving blade 12. The wiper 38 of the potentiometer 39 is connected to an amplifier 72 which also receives a pre-set signal 70 and is arranged to adjust jacks 16 which vary the angular position of the blade 12 relatively to the vehicle, thereby maintaining the blade at a pre-set slope to the horizontal. The electrolytic potentiometer 26 contains an electrolyte with a non-conductive region therein, e.g. an air bubble, movements of the bubble due to gravitational forces varying differentially the impedance between respective and electrodes 28, 31 and an earthed control electrode 29. The electrodes 28, 31 are connected respectively to the lines 57, 59 which connect the balanced outputs 46, 47 of an oscillator 44 to a rectifying circuit 51. The output of the rectifying circuit varies in amplitude and polarity with the magnitude and directions of the tilt of the potentiometer 26, and is supplied via a variable gain amplifier 64 to a motor 34 which repositions the gear 27 carrying the potentiometer 26. Rotation of the gear 27 rotates a gear 36 and moves the pointer 38 of potentiometer 39, the voltage thereon being compared with the pre-set voltage at 71, and the difference being applied to one or other of valves 75 controlling the jacks 16. Movement of the blade 12 produced by the jacks is conveyed by a shaft 18 (also Fig. 1, not shown) to a universal joint and thus to a shaft 22, which carries the track assembly 41 of the potentiometer 39 and which is coaxial with, and rotatable relative to, the shaft of gear 27. The track 41 is thus moved, causing gear 36 to walk around gear 27 until the voltage on the wiper 38 again equals the pre-set voltage 71. The speed of the vehicle is measured by a tachogenerator 77 and used to alter the gain of the amplifier 64.
Patent GB-1460165-A (GB)
Title: Detection of discharges in metal-clad installations ignition distributor for internal combustion engine
IPC: H02B13/065
Filed: 1974-03-22
Abstract: 1460165 Acoustical detection of electrical discharges SIEMENS AG 22 March 1974 [23 March 1973] 12945/74 Heading G1G [ Also in Division H2]  A detecting arrangement for dielectrical disruptive discharges in metal clad switching or transmission systems comprises, preferably, a plurality of detector channels each having an electroacoustic transducer, e.g. a microphone, mounted at points in the installation to detect such discharges, and associated circuitry for suppressing unwanted signals on a frequency, amplitude and time duration basis, which circuitry provides an output for actuating a trip device or an earth leakage indicating device. The metal-clad high-voltage switching installation includes a cable tap 1, connected via a line isolating switch 2 to a circuit breaker 3, a tubular coupling conductor 4, a load break switch 5, a transformer tap 6, &.c. and is divided into gas tight, arc-resisting compartments by partitions 21. Each compartment has externally attached at least one structure-borne noise microphone 22, which detects the characteristic noise, at twice the mains frequency, of arcing within the cladding. Fault conditions are detected by the circuitry of Fig. 2. In each channel, microphone 22 feeds an amplifier 22 the output of which is connected to a filter which may be variable, and is tuned to 2 times the mains frequency, e.g. 100 Hz. Variable gain amplifier 25, which ignores signals below a pre-set minimum amplitude, amplifies the filtered signal, which is then applied to selection stage 26. The location of the activated microphone is detected by blocking all other channels on the lst occurrence of a detection signal in stage 26. To further distinguish fault conditions from arcs produced by normal circuit breaker operation or by noise of the operable frequency i.e. 100 Hz produced by nearby machinery, timing device 27 is operable to pass signals only if the signal occurs for longer than the circuit breaker quenching time, and further, the output of device 27 may be connected to enable a store 28 which stores the signal switched from 27 for a relatively long pre-selectable time and maintains an enable signal at an input of AND gate 29. The other input to AND gate 29 is connected to a circuit fault detecting device so that the signal is still present in store 28 when device 30 responds to the fault condition whereby a circuit tripping signal is produced at output 31 of AND gate 29.
Patent GB-1501334-A (GB)
Title: Manually operated remote control apparatus for opening and closing vehicle doors
IPC: E05B65/36
Filed: 1976-03-31
Abstract: 1501334 Manual operating linkage for vehicle doors S YAMANAKA 31 March 1976 12947/76 Heading E2M A vehicle door 41 is opened or closed by a manual operating linkage comprising a transverse shaft 64 having an operating handle 65, a link 52 pivoted between the end 63 of the shaft and a member 47 secured to the door; a pivot 51 on link 52 extending through a slot 48 in the member 47 and through a slidable member 50 which operates on a spring biassed pivoted lever 54 to lock and unlock the door. Movement of link 52 causes pivot 51 to initially move freely in slot 48 and pushes member 50 against the lever 54. This lever pivots about 56 against spring 55 and pulls cable 60 which leads to an unlocking device. When pivot 51 reaches the right hand end of the slot 48 it pushes on member 47 to open the unlocked door. In another embodiment (Figs. 1-3 not shown) a second link is pivoted between link 52 and the member 47.
Patent GB-247800-A (GB)
Title: An improved photographic film pack
IPC: G03B17/34
Filed: 1925-05-18
Abstract: 247,800. Imray, O. V., (Akt.-Ges. f³r Anilin-Fabrikation). May 18, 1925. Change-boxes, self-contained.-A film pack casing, for films manipulated from front to rear by long tabs, and which is stamped out and bent from sheet metal, has its edge folded twice at right angles in such a manner that flaps are produced at the corners. which are folded down over the edges along which the bent portions meet in order to render the corners of the casing light-tight. The casing is preferably formed in two parts which have a sliding fit and are joined by tongues, and the opening through which the film tabs emerge is fitted with a cover lined with velvet. The casing encloses a sheet metal film supporting,frame having spring tongues for pressing the films into the focal position, and bent-up side walls which are joined at' one end by a tube forming a guide over which the exposed films are pulled. In the form shown, the main casing comprises two parts 10, 15, Figs. 2 and 9, bent from stamped blanks. The part 10 has a rear wall 11, side walls 12, and end wall 13. and front strips 14 defining three margins. The method of bending the metal is indicated in Fig. 7, which shows one corner before the final step of bending down the flap 12b. The part 15 has a rear wall 18, side walls 17, an end wall 16, and front strips 19. and is slidden upon the part 10 and joined thereto as by tongues 20, 21 which permit ready separation. The film supporting frame 25, Fig. 11, may be formed from a single metal blank, or from two sheet-metal side members 26 joined at one end by an angular cross-piece 29 and at the other by a tube 30 over which the exposed films are adapted. to be pulled. The members 26 have side walls 28 and spring tongues 27 for pressing the films against the focal apertures 14, 19. The film tabs emerge from the casing through an aperture formed between the free edge of the wall 11 and the rear wall 33 of a sheet metal cover 37, Fig. 10, which is slipped on to the assembled pack, and is preferably lined with velvet.
Patent GB-1138131-A (GB)
Title: Process for the preparation of dicarboxylic acids
IPC: C07C51/31
Filed: 1967-03-20
Abstract: 1,138,131. Dicarboxylic acids. E. I. DU PONT DE NEMOURS & CO. 20 March, 1967 [28 April, 1966], No. 13032/67. Heading C2C. [Also in Division B1] Dicarboxylic acids are prepared by the oxidation of cyclic olefines by contacting with a liquid phase reaction system comprising aqueous nitric acid and an osmium-vanadium catalyst. Mono-olefines may be oxidized, or di-olefines which form two dibasic acids of lower molecular weight or unsaturated diacids. The osmiumvanadium may be introduced as elements, oxides or salts and an organic solvent, e.g. dioxane or acetic acid, may be present. The process may be batchwise or continuous, with or without oxygen, the presence of which regenerates the nitric acid in situ. Examples describe the oxidation of cyclohexene, cyclododecene, cycloheptene, cyclooctene, 3- and 4- methylcyclohexene, 1,5-cyclooctadiene and cyclododecatriene.
Patent GB-874933-A (GB)
Title: Nail polish remover pad
IPC: A45D29/00
Filed: 1960-04-13
Abstract: 874,933. Polish-removing pads. MORSE, E. A. April 13, 1960 [April 13, 1959], No. 13268/60. Class 19. A pad for removing nail polish is of absorbent material impregnated with a controlled amount of solvent. As shown, the pads 10 are produced from a continuous mat of creped wadding tissue formed and shaped into a series of double-faced strips 19 ... 23 connected by webs 13 ... 18 located on the central medial plane of the mat ; webs 12 are produced along opposite edges of the mat, the latter being cut into separate individual pads. During or after manufacture the pads are impregnated with a measured amount of solvent such as propylene carbonate. Two pads 10 are superimposed upon each other and enclosed in an air-tight protective envelope 9 of aluminium or fluoro carbon.
Patent GB-883140-A (GB)
Title: Improvements in valves for vacuum brakes
Inventor: LIGHTOWLER LESLIE ERNEST
IPC: B60T13/46
Filed: 1959-04-18
Abstract: 883,140. Valves. BIRFIELD ENGINEERING Ltd. March 29, 1960 [April 18, 1959], No. 13290/59. Class 135. [Also in Group XXXIV] A restrictor valve in the " trainpipe " of a vacuum brake system comprises a valve member resistently loaded at 12 to a closed position and formed by a pair of axially or spaced pistons 10, 11 making a small clearance in a bore 6 on either side of a side aperture in the bore leading to the right-hand end of a through passage 4, the ends of the bore leading to the opposite end of the through passage, and the valve being slidable in bearings coaxial with the bore. The valve spindle 9 is moved upwards to open position by a solenoid 15 in response to actuation of a driver's control valve and a spindle collar 13 abuts a housing stop 14 when the valve closes. The two pistons are of equal diameter to balance the valve so that light spring 12 is used for overcoming friction.