baber/WOPTO huggingface dataset:
Patent GB-1283705-A (GB)
Title: Improvements in or relating to pulse-counting circuits
Inventor: PAUL JOHN JAMES
IPC: G04F10/04
Filed: 1969-08-25
Abstract: 1283705 Measuring time intervals SPERRY RAND CANADA Ltd 25 Aug 1969 [29 Aug 1968] 42219/69 Heading G4H Clock pulses are accumulated in a counter 21 (Fig. 1) at a full repetition rate between a reference pulse (27, Fig. 2, F, not shown) on lead 2 and the next positive zero crossing (9, Fig. 2 B, not shown) of a sine wave signal from generator 5 and then at half the repetition rate until the next negative zero crossing (14, Fig. 2 D, not shown) of the sine wave signal so that the count represents the time between the reference signal and the peak value of the sine wave signal. As described the reference pulse occurs at half the frequency of the sine wave signal. Errors due to a D.C. component in the sine wave signal are avoided since the time for which pulses are accumulated at the full repetition rate is either increased or decreased by an amount t, the time for which pulses are counted at half the repetition rate being correspindingly decreased or increased by a time 2t. By making the capacity of the counter equal to the number of pulses from generator 20 in one cycle of the sine waveform, if the sine signal lags the reference by less than 90 degrees the counter overflows the final count representing the required time interval. Reference has been directed by the Comptroller to Specification 1,145,842.
Patent GB-936004-A (GB)
Title: Improvements in or relating to the production of sintered beryllium oxide
IPC: C04B35/08
Filed: 1959-12-11
Abstract: A process for the preparation of sintered beryllium oxide comprises adding to a powder formed of a substantially anhydrous mixture of substantially pure light beryllium oxide, having a bulk density of between 0,2 and 0,3 g./cm3., and a specific surface area of at least 100,000 cm.2/g., and substantially pure heavy beryllium oxide having a bulk density between 1,0 and 1,2 g./cm.3 and a specific surface area of about 5,000 cm.2/g., a lesser quantity, generally less than 0,6% by weight, of a substantially pure alkaline earth metal oxide or carbonate or other salt which forms the oxide, with elimination of the acid radical, on heating, crushing and drying the mixture, adding a binder, for example in amount of 5-8% by weight, such as glycol stearate, agglomerating the resulting mass, for example into bricks by means of a ram, and then sintering at a temperature not exceeding about 1600 DEG C.  Desirably the proportion of light and heavy oxides in the mixture is such that, after crushing for example in a ball mill, the specific surface area of the mixture is 18,000-22,000 cm.2/g.  The oxides may be prepared by calcining the hydroxides, for example at about 1000 DEG C., or by thermal decomposition of oxygen-containing beryllium salts, or by hydro-thermal decomposition of halides.
Patent GB-1202305-A (GB)
Title: Sweeping machine
Inventor: BRAUN HERMANN
IPC: E01H1/04
Filed: 1968-09-06
Abstract: 1,202,305. Adjustable brushes. SCHORLING & CO. WAGGONBAU. 6 Sept., 1968, No. 42462/68. Heading A4K. [Also in Division E1] A centrifugal brush consists of eight strip brushes 18 mounted on the strip holder 17 and these are radially controlled by "star mountings 19". Within the hollow shaft 21 is a spindle 22 carrying a left hand thread 23 and a right hand thread 24 on each of which is a nut 27 and 28 respectively, by rotating nut 25 the bolts are caused to move together or apart, thus horizontal motion being converted to vertical movement of the brushes by the rods 31 thus causing the brushes to be raised or lowered.
Patent GB-959402-A (GB)
Title: Thermographic copying process and apparatus therefor
IPC: G03B27/30
Filed: 1960-12-12
Abstract: 959,402. Thermographic copying. ITEK CORPORATION. Dec. 12, 1960 [Nov. 21, 1960], No.42631/60. Heading G2C. Copies are made on heat-sensitive copy sheets by irradiating an original having infra-red absorbing markings and placing the irradiated original in heat-conductive relation with the copy sheet, the irradiation of the original being of an amount to produce heating sufficient to form an image when placed against the copy sheet. Either or both of the original and copy sheets may be opaque to infra-red e.g. comprising metal base layers. Preferably the copy sheet is preheated below the image-forming temperature which preferably is not below 75‹C. before contacting the irradiated original. If desired the copy sheet may carry separate heat-sensitive layers on its opposite surfaces and two different copies made on the opposite sides. As shown, an original 160 is fed by a roller 164 along the outside of a housing 168 in which is disposed a lamp 176 and a heat-sensitive copy sheet 184 is brought into contact with the irradiated original by a roller 192. Alternatively (Fig. 2, not shown) the original and copy sheets may be drawn over curved guides by a pair of gripping rollers, the lamp being arranged between the back of the copy sheet guide and the front of the guide for the original.
Patent GB-1398120-A (GB)
Title: Sheet material transport
IPC: B41J11/30
Filed: 1972-09-16
Abstract: 1398120 Linear electric motors INTERNATIONAL COMPUTERS Ltd 13 Sept 1973 [16 Sept 1972] 43027/72 Heading H2A [Also in Division B6] A pin tractor includes at least one endless belt 19, 20 guided along a path having at least one linear portion. Magnetic elements 21 are carried by the belt(s) 19, 20 and a pattern of magnetic fields is generated by cores 11 with windings 12, which pattern is caused to stop along the path of the belt(s) 19, 20 so causing the elements 21 to move with it and thus driving the belt(s) 19, 20 and web 28 by means of pins 27. As shown the pins 27 are on the elements 21 which lie between belts 19, 20. A pair of cores 11 is associated with the top and bottom linear portions of the path. The windings 12 on each core 11 are comprised by three interlaced groups arranged such that each winding is flanked by coils of the other two groups. Initially two of these groups are energized to have the same polarity and the third group opposite polarity. Then the polarity of one of the two groups is reversed as is the polarity of the third. This causes the elements 21 to step by a distance equal to the centre to centre spacing of adjacent windings 12.
Patent GB-980552-A (GB)
Title: Pipe joint packing removal tool
Inventor: COOLIN FRANCIS JOSEPH
IPC: B25B27/00
Filed: 1960-12-15
Abstract: 980,552. Prizing tools. J. GREEB. Dec. 5, 1961 [Dec. 15, 1960], No. 43189/60. Heading B4C, A tool for extracting packing from pipe joints comprises a handle 2, a tapered head 4 for engagement with the packing, and a shank 3 joining the head and handle.
Patent GB-1081104-A (GB)
Title: Animal feed stuffs
Inventor: BUDOWSKI PIERRE
IPC: A23K1/16
Filed: 1964-10-22
Abstract: 3,4,31,41-Bis-dehydro-b -carotene is isolated as a by-product of the reaction of p-toluenesulphonic acid with a lipid extract of alfalfa (which contains lutein, zeaxanthin and b -carotene), followed by saponification and chromatographic separation.ALSO:Anhydrolutein is obtained by the action of p-toluenesulphonic acid on a lipid extract from alfalfa (which contains lutein, zeaxanthin and b -carotene), followed by saponification and chromatographic separation.ALSO:An animal fedstuff contains, as a source of provitamin A2, anhydrolutein or other carotenoid containing the 3, 4-dehydro-b -ionone ring.  The provitamin A2 is obtained, in pure or concentrated form, by action of a strong acid dehydrating agent or lutein, zeaxanthin, alfalfa lipids, alfalfa meal or crude soybean oil.
Patent GB-1138710-A (GB)
Title: An improved method of and means for facilitating loading of knitted ribs on to knitted rib fabric transfer bars
IPC: D04B11/24
Filed: 1966-09-29
Abstract: 1,138,710. Knitting apparatus. G. MURPHY and N. A. DAVIES. 18 Dec., 1967 [29 Sept., 1966], No. 43555/66. Heading D1C. To increase the loading on a magazine bar for transferring narrow width rib portions of knitted fabric to the central points of a transfer bar the rib portions are loaded at each end of the magazine bar and the transfer bars are mounted on the transfer apparatus so that their central points are aligned with the points of the magazine bar carrying the rib portions at one end of the bar or the other. The transfer bars can be manipulated by hand and are arranged against stops in the apparatus to align the points or alternatively the magazine bar can be slidably mounted and manipulated to cause the points carrying the rib portions to be aligned with the central points of the transfer bar.
Patent GB-436064-A (GB)
Abstract: 436,064. Stove dampers. MITCHELL, RUSSELL & CO., Ltd., and MITCHELL, J., Chattan Foundry, Bonnybridge, Stirlingshire. April 13, 1935, No. 11499. [Class 126] To prevent unauthorized operation of the damper 5 controlling the air - supply to a stove, the damper is located within the stove, and is operated by means, in the construction shown a screw 7, extending to the exterior of the stove, and having on the projecting portion a part for receiving an operating key without which actuation is difficult or impossible. In the form shown, a circular damper plate 5 is housed in the ash-box cover 3 and is moved to and from the apertured front 3<a> to control the air supply by rotation of the screw 7 on which it is threaded. The head 7<a> of the screw is on the exterior of the front 3<a>, and is formed with a non-circular recess 7b in which the operating key engages. A bridge member 9 extending over the screwhead forms a guard and contains an aperture 9<a> for the key. The screws 11 by which the bridge member is attached engage in recesses 5<a> in the edge of the damper and prevent it rotating with the screw.
Patent GB-869849-A (GB)
Title: Rotary tower crane
IPC: B66C23/34
Filed: 1959-12-23
Abstract: 869,849. Erecting tower cranes. LIEBHERR, H. Dec. 23, 1959 [Dec. 23, 1958], No. 43654/59. Class 78 (4). A rotary tower crane the boom 16, Fig. 2, of which is used in erecting the crane tower 15 by the addition of tower sections 14 one by one has an erecting structure 1 comprising a rotary platform 20 supported by a ballmounted ring 21, the boom 16 being supported by the platform 20. As shown the boom 16 is raised to position 161 by hydraulic rams 19 to bring section 14 to position 14<SP>1</SP> from which it is lowered through an aperture in the platform 20 and attached to the top of section 22. The structure 1 is now raised to a level above the last section 14 by a lifting cable 34, Fig. 3, which pulls a cable 28 round pulleys 26, 27 attached to member 25 of the structure 1 and pulleys 32, 33 mounted on the section 14, the opposite end of cable 28 being anchored to a bracket 30. The structure 1 is now bolted in position with the top of the member 25 flush with the top of the upper section 14. Accommodated within the structure 1 are the load-winch, the slewing mechanism and an hydraulic pump for rams 19. Fig. 4 (not shown) illustrates a tower crane according to the invention supported by the floors of a building. The boom is raised in this embodiment by raising the whole crane from one floor to the next. As shown in Fig. 5 this is effected by auxiliary cables 57, 59 anchored respectively to a pulley block 56 and to the building at 60, pulleys 55, 56 and the lifting cable 61. Fig. 7 shows the crane mounted on a chassis 64 with wheels 80, 81 which run on rails 82. The erecting structure 87 has a control cabin 88. So that the crane may be transported by road a pair of road wheels are attached to the chassis 64 after the tower has been dismantled, and the boom and supporting structure 96 are pivoted forwards into a substantially horizontal position. The crane can now be attached to a lorry by the tip of its jib and towed.
Patent GB-1274278-A (GB)
Title: Aqueous pigment dispersions containing ethylene copolymers
Inventor: REARDON JOSEPH EDWARD
IPC: C09D123/08
Filed: 1969-09-03
Abstract: 1,274,278. Coating. E.I. DU PONT DE NEMOURS & CO. 3 Sept., 1969 [3 Sept., 1968], No. 43673/69. Heading B2E. [Also in Division C3] Substrates such as cylinder board may be coated with aqueous dispersions having a solids content of 30 to 65 weight per cent, the solids consisting of 20 to 80 weight per cent of pigment and 80 to 20 weight per cent of a binder comprising (a) 25 to 100 weight per cent of a copolymer of 45 to 97 weight per cent ethylene and 55 to 3 weight per cent of at least one polar comonomer selected from α, #-ethylenically unsaturated carboxylic acids, esters thereof and vinyl alkanoates and (b) 0 to 75 weight per cent of a coalescing aid. The coating may be applied with a wirewound bar. The coalescing aid may be a "soft" polymer derived from vinyl or vinylidene chloride, butadiene and styrene optionally with acrylonitrile, acrylic compounds or α-olefins; or a wax, e.g. paraffin, microcrystalline, polyethylene, carnauba and bees waxes. The pigment may be clay, titanium dioxide, calcium carbonate, talc, lithopone, finely divided metals or lakes. The compositions may also comprise viscosity modifiers, e.g. polyvinyl alcohol, carboxy methyl cellulose, methyl cellulose and polyacrylamide. Examples describe the coating of cylinder board with aqueous dispersions comprising clay and/or titanium dioxide; ethylene/vinyl acetate copolymer and/or ethylene/methacrylic acid/sodium methacrylate copolymer; paraffin wax or a styrene/ butadiene copolymer; and optionally polyvinyl alcohol or methyl cellulose.
Patent GB-905560-A (GB)
Title: Improvements in or relating to a baffle for a loudspeaker
IPC: H04R1/28
Filed: 1959-12-28
Abstract: 905,560. Loud-speakers. GEENSEN, P. C. Dec. 28, 1959, No. 43958/59. Class 40 (4). In a loud-speaker baffle comprising alternate sound-absorbent and metallic plates, provided with an opening of the same size as a loudspeaker diaphragm, the loud-speaker is secured to a housing 17 which is attached by insulated bolts to one face of the plates 1 to 7. The plates 1, 7 (Fig. 1) are made of a fibrous material and plates 2, 6 may also be made of fibrous material e.g. plywood or wood fibre board; plates 3, 5 may be made of felt paper with a border 15, 16 thereof made of a less sound-absorbent material e.g. wood-veneered felt; and plate 4, only one of a number of such plates being shown in Fig. 1, is a metal plate e.g. copper, which only touches the borders 15, 16 of plates 3, 5 respectively and is of such thickness and density that it has a resonant frequency in the audio spectrum 16- 20,000 c/s. In Fig. 2 a number of metal plates 21, 23, 25, having different resonances are shown sandwiched between wood veneered felt plates 22, 24, fibrous plates 19, 27, and felt plates 18, 20, 28. More than three plates and other sound-absorbent materials may be used.
Patent GB-1063440-A (GB)
Title: Graft polymers
IPC: C08F279/02
Filed: 1965-10-19
Abstract: Thermoplastic graft polymers are made by polymerizing an unsaturated carboxylic acid or ester, nitrile or amide thereof, or a mixture of such a monomer with an aryl olefine, in a latex of a homopolymer of an alkyl substituted diene or a copolymer thereof with a minor proportion of a comonomer.  Dienes specified are isoprene, 2,3-dimethylbutadiene and methylpentadienes, which may be copolymerized with styrene, substituted styrenes, acrylic acid, methyl acrylate and methacrylate, acrylonitrile, methacrylonitrile and methacrylamide, these comonomers also being suitable as grafting monomers.  The examples describe polymerizing mixtures of styrene and acrylonitrile in latices of polyisoprene and isoprene acrylonitrile copolymers.
Patent GB-1157838-A (GB)
Title: Adhesive for Porous Structures
Inventor: TARBELL HARLAN EUGENE
IPC: C08L95/00
Filed: 1966-10-04
Abstract: 1,157,838. Bitumen/lignosulphate emulsions. GREFCO Inc. 4 Oct., 1966, No. 44361/66. Heading B1V. A water-in-oil emulsion comprises a solution of bitumen having a softening point within the range,of 100‹ to 400‹F in a substantially water immiscible organic liquid intimately mixed with an aqueous lignosulphate solution, said emulsion comprising from 20% to 70% bitumen and from 30% to 80% lignosulphate on a dry weight basis where the word "dry" means "in the absence of organic liquid". The bitumen may be one or more of asphalt, gilsonite petroleumtar pitch, coal tar pitch, -wood tar pitch, lignite tar pitch, naphtha cracking residues, and the lignosulphonates may be selected from material of hardwood or softwood origin. The lignosulphate solution may be neutralized with an alkaline hydroxide.
Patent GB-1132692-A (GB)
Title: An electrical process control system
IPC: G05D23/24
Filed: 1964-10-30
Abstract: 1,132,692. Automatic temperature control systems. F.L.F. STEGHART. Jan.28, 1966 [Oct.30, 1964; Feb.18, 1965], Nos.44421/64 and 7121/65. Heading G3R. An automatic temperature control system having a delayed proportional feedback comprises a temperature sensitive resistor 30 in a D.C. bridge circuit controlling through valves 31, 32 the voltage across a capacitor 33. When a diode 34 breaks down a thyristor 35 is fired energizing a thermal expansion motor 37 to control the heating fluid. The feedback circuit includes a current transformer 39 which charges a capacitor 42 the voltage across which opposes the bridge output hence the thyristor is cyclically switched off. The load 37 may be in series with the thyristor. A resistor 41 and capacitor 43 may introduce a time delay. In another arrangement Fig. 6 (not shown) positional feedback may be provided by a potentiometer linked to the motor 37. In a further arrangement the motor 37 is switched by relay contacts and other contacts simultaneously supply the feedback. A number of other arrangements are described in the Specification employing feedback proportional to position or other parameters.
Patent GB-1080117-A (GB)
Title: Improvements in and relating to camera shutters
IPC: G03B9/32
Filed: 1965-10-20
Abstract: 1,080,117. Photographic roller blind shutters incorporating flashlight synchronizers. V. J. LUNCHENKO, I. N. KERSEK and J. E. STOLBOV. Oct. 20, 1965, No.44425/65. Heading G2A. Shutter blinds of a focal plane camera are fixed on shafts 1, 2 which rotate on release of the shutter, shaft 1 leading shaft 2. As shaft 1 nears the end of its rotation, a stop pin 3 thereon strikes a lever 9 and rotates it against the action of a spring 14 into contact with an abutment 5, thus bringing the shaft 1 to rest and closing contacts 18, 19 to complete the circuit 22 to a flash bulb (not shown). After the camera aperture has been reclosed by the second blind, a pin 4 on the shaft 2 strikes a lever 10 and rotates it to bring the shaft 2 to rest and to open the contacts 20, 21 and hence break the flash bulb circuit Fig. 2 (not shown).
Patent GB-1020631-A (GB)
Title: Control apparatus and method
Inventor: HARRISON JAMES ARTHUR
IPC: B65G47/50
Filed: 1961-12-13
Abstract: 1,020,631. Electric selective signalling. DAVY & UNITED ENGINEERING CO. Ltd. March 13, 1963 [Dec. 13, 1961], No. 44611/61. Heading G4H. [Also in Division G1] Apparatus for stopping a beam when a preselected length has passed a fixed point, e.g. a saw in a saw-mill, initiates the counting of pulses generated by the displacement when the leading end of the beam has travelled a given distance past the fixed point, the count being compared with a preselected number. Fifty photo-cell units, with one-metre spacing, each deliver a step-function output to a metres coincidence unit on being passed by the leading edge of the beam. A motor driving a roller table carrying the beam is slowed to quarter speed by this unit two metres from the coarse desired position (metres) of the beam. One metre later, the unit gates beam-displacement pulses (one pulse produced per mm. of beam travel) to a counter. The count in the counter is sent to a centimetres coincidence unit to be compared with the fine part (centimetres) of the desired position. At 20 cms, from the desired position, the centimetres coincidence unit gates pulses from the generator to a digital-to-analogue converter which produces a gradually falling output signal which is used to control the motor and reaches zero after the reception of 200 pulses (i.e. when the desired beam position has been reached). If the beam overshoots, further pulses are produced and the converter reverses the motor. The roller now rotates in the opposite direction, producing pulses (one/ mm.) which go to a second input to the converter to suitably change its output signal. In this way the desired position is approached. When the coarse component of the desired position is reached, the metres coincidence unit gates the counter contents (which should be 1000) to a checking unit which indicates to the operator whether or not the count is between 995 and 1005 and if not prevents sawing. When the beam is moved on after sawing and its trailing edge passes the first photo-cell unit the latter resets the system. The outgoing roller table section is started before the ingoing to ensure a gap of at least one metre between the two beam pieces so that the second piece may be cut accurately. The D-A converter may alternatively control the motor via a threshold device whereby the speed is constant until the error signal from the converter falls below a certain level when the motor is cut off.
Patent GB-952279-A (GB)
Title: Improved housing for an electrical component
IPC: H02B1/048
Filed: 1962-11-27
Abstract: 952,279. Lamp caps and holders. INTERNATIONAL BUSINESS MACHINES CORPORATION. Nov. 27, 1962 [Dec. 26, 1961], No. 44814/62. Heading H2E. [Also in Division E2] A housing for an electrical component consists of a hollow socket 10, Fig. 2, of plastics material with two parallel tapering arms 11 having grooves 15 so that on insertion of a suitably shaped cap 20 the arms of the body are spread to ensure a tight fitting with a panel Fig. 1 (not shown). An electrical component 24 such as a lamp, fuse, capacitor or switch is connected to two arcuate contact members 25 which meet with contacts 18.
Patent GB-1197411-A (GB)
Title: Light Alloy Pistons with Inserts of a Different Metal
IPC: B22D19/00
Filed: 1968-09-23
Abstract: 1,197,411. Pistons. MONDIAL PISTONDOTT. GALLI ERCOLE & C.-S.p.A. 23 Sept., 1968 [9 Jan., 1968], No. 45062/68. Heading F2T. [Also in Division B3] An aluminium alloy piston 2 contains at least one insert 1 of a copper based alloy, e.g. aluminium bronze having a copper content of 80-90%. In addition to piston ring grooves, the inserts may provide gudgeon pin seatings or be located in the piston head.
Patent GB-972139-A (GB)
Title: Improvements in brakes for rail vehicles
Inventor: TICKLE COLIN JOHN FREDERICK
IPC: B60T8/32
Filed: 1961-12-16
Abstract: 972,139. Fluid-pressure brakes. GIRLING Ltd. Dec. 5, 1962 [Dec. 16, 1961], No. 45179/61. Heading F2F. In a braking system for rail vehicles the brakes are applied hydraulically by slave cylinders 18, 19 to which liquid under pressure is supplied from a master cylinder 12 actuated by a fluid-pressure actuator 10 of the vacuum-suspended diaphragm type and there is provided in the pipe-line between the master cylinder and the slave cylinder of the brakes on each axle of a vehicle a solenoid operated valve 16, 17 controlled by a skid detection device (not shown) which is sensitive to the rate of change of the rotational speed of the wheels. The valve 16 or 17 normally connects the appropriate slave cylinders 18 or 19, respectively to the master cylinder 12 but disconnects them from the master cylinder and connects them to a reservoir 13 via a return line 21 when the rate of change exceeds a predetermined value. An automatic hydraulic slack adjuster 15 may be provided in the pipe line 14 between the master cylinder and the slave cylinders. On operation of a control valve 16 or 17 by the skid detection device the slave cylinders 18 or 19 are put in communication with the reservoir 13 through a return line 21 containing a trap line pressure valve to maintain a pressure higher than the reservoir pressure on the exhaust side of the control valve 16 or 17.