baber/WOPTO huggingface dataset:
Patent GB-1226288-A (GB)
IPC: B28B21/48
Filed: 1969-05-28
Abstract: 1,226,288. Shaping pipes. SPETSIALNOE KONSTRUKTORSKOE BJURO " ASBOTSEMMASH." 28 May, 1969, No. 26844/69. Heading B5A. A fibrocement pipe 10 on a core 14 is first located on the upper ends 18 of hydraulic jacks 17 mounted on a machine bed 2, and is then lowered on to a pair of driven rolls 5 mounted on a beam 1. The pipe is compressed between the rolls 5 and a roller 22 urged downwards by an hydraulic cylinder 21, and after the rolling process the upper roller is raised and the pipe and core lifted by the jacks enabling the beam to be rotated about its axis to bring a support 8 below the pipe and core. The latter are lowered on to the support whereupon a collar 23 of thd core is received in a head 15 of a mechanism 16 which extracts the core and brings it on to rollers 24; the beam is turned through 45 degrees, causing the pipe to roll from its support and to bring a row of rollers 13 on the beam into alignment with the rollers 24. The core is then transferred from the latter on to the rollers 13 from which it is raised by the jacks 17 and removed. The beam is then rotated to its initial position. The support is adjustably mounted on the beam and is movable by means of hydraulic cylinders 12 acting through a pivoted lever 11.
Patent GB-1229125-A (GB)
IPC: C09C1/30
Filed: 1969-05-16
Abstract: 1,229,125. Spray drying silica. FARBENFABRIKEN BAYER A.G. 16 May, 1969 [2 July, 1968], No. 24984/69. Heading C1A A silica filler is obtained by spray drying an aqueous suspension of precipitated silica with a specific surface of from 50-200 m.<SP>2</SP>/g. (according to BET) and a salt content of less than 1 % by weight, based on SiO 2 , the solids concentration being less than 12% by weight and the outlet temperature of the heating gases being between 250‹ and 700‹ C. The preferred conditions are a turbulent gas stream so that at least 100 kg. of water are evaporated per m.<SP>3</SP> of drier volume per hour; a residence time of 1 second or less and an outlet temperature of 450-700‹ C. The silica suspension may be obtained by removing metal cations by hydrogen ion exchange from a suspension of filter cake after washing the latter. In an example sulphuric acid is added to a waterglass solution over a period of 3 hrs. at 70‹ C., the mixture boiled for 1 hr., adjusted to pH 7 and finally filtered. The filter cake was washed, suspended in salt free water and delivered to the spray drier.
Patent GB-1229251-A (GB)
IPC: C21C5/50
Filed: 1968-02-06
Abstract: 1,229,251. Metallurgical converters. ASHMORE, BENSON, PEASE & CO. Ltd. 31 Jan., 1969 [6 Feb., 1968], No. 5866/68. Heading F4B. In a tiltable basic oxygen steel converter 1 1 carried by a trunnion ring 2 and trunnions 3, 4, tilting is effected by four hydraulic motors 12, 13 (only two shown) of the radial piston type. The motors are coupled to the trunnion 4 through gearing comprising primary gearboxes 10, 11 and a secondary gear-box 9. The trunnions 3, 4 are held in bearings 7, 8 carried on supports 5, 6. A pump unit (not shown) operated by an electric motor powers the hydraulic motors.
Patent GB-1229728-A (GB)
IPC: G03G15/00
Filed: 1969-08-29
Abstract: 1,229,728. Electrostatographic copying. FUJITSU Ltd. Aug.29, 1969 [Aug. 30, 1968], No.43233/69. Heading G2H. Paper 1 is fed at a low speed past electrodes 8, 9 e.g. a computer read-out from which it receives an electrostatic latent image, is stopped when imaging is complete, fed at a higher speed to move the whole of the imaged portion past cutters 15, 16, stopped and cut; the imaged portion then being fed at the higher speed through developing and fixing stations while another image is deposited on a second portion of paper moving at the low speed. The fixing station may comprise two sections, so that the feed means for the developing station and first fixing section may revert back to the slow speed for receiving the leading end of the second portion of paper, while the second fixing section feed means feeds the trailing end of the first portion of the paper at the high speed. The paper is fed by rollers 2 to 4, 6, 7, 10, 11; by rollers 38, 29 and a stainless steel belt 28; and by a belt 43 over a vacuum chamber 44. These three feed means are independently operable by micro-switches, clutches and gears Figs. 2, 3 (not shown), and a single motor (M201). Roller 11 may comprise three parallel rollers. Developing Toner 22 is fed via rollers 23, 18 to magnetic brush 17, roller 21 metering application. Fixing is effected by heaters 25, 26 in a shield 27, and heaters 39, 40 in a shield 41; the latter being controlled by a shutter 42.
Patent GB-1233028-A (GB)
IPC: A47J44/00
Filed: 1968-09-19
Abstract: 1,233,028. Food mixers. M. E. BRICKER. 19 Sept., 1968, No. 44642/68. Heading B1C. [Also in Division A4] The power take-off hub 80 of a meat chopper 82 or a commercial mixer, Fig. 6 (not shown), is used to drive a vegetable cutter 20 via a high-speed adapter 22. The cutter may be located in a raised position, Fig. 1, with respect to the food machine or a lowered position, Fig. 6, by positioning a pin (88), Fig. 8 (not shown) in a selected bore (92) in a flange secured to a removable side wall 51 of the adapter housing. The pin when in position cooperates with a hole (86) in the hub 80. A shaft 50 in the adapter engages the end of the machine drive shaft 84 and via toothed wheels and a belt drives a slicer plate 36 at a greater speed than that of the shaft 84.
Patent GB-1234363-A (GB)
IPC: H03F3/55
Filed: 1969-03-10
Abstract: 1,234,363. Semi-conductor devices. NIPPON ELECTRIC CO. Ltd. 10 March, 1969 [12 March, 1968], No. 12594/69. Heading H1K. [Also in Division H3] Gunn effect oscillations between two ohmic electrodes 12, 13 on a crystal 11, e.g. of n-type GaAs, are suppressed by the provision of a metallic film 16 capacitatively coupled to the side of the crystal 11 through a dielectric layer 18, so that the crystal acts in a stable bulk negative resistance mode as an amplifier of a signal applied to an input electrode 14 adjacent one of the main electrodes 12. The output electrode 15 is situated adjacent the other main electrode 13, separated from the input electrode 14 by the metallic film 16 and dielectric layer 18. The input and output electrodes may be capacitatively coupled to the crystal 11, as shown, or may be rectifying, ohmic or combined with delay circuits. The crystal 11 may comprise a single bar or may be an epitaxial layer on a semi-insulating GaAs substrate.
Patent GB-1234393-A (GB)
IPC: B23K3/02
Filed: 1967-06-21
Abstract: 1,234,393. Soldering. ELECTRICAL REMOTE CONTROL CO. Ltd. 20 Sept., 1968 [21 June, 1967], No. 28758/67. Heading B3R. In a soldering iron comprising a handle 1, a stem 2 attached to the handle and a bit 3 provided with a recess removably engaged on the stem, the part of the recess engaged by the stem is coated with a metal having a lower adhesion at room temperature to the stem after operation of the soldering iron, than has the bit on which the coating is provided. In an embodiment a soldering iron comprises a stainless steel stem 2 formed as a split sleeve, and a copper bit 3, the split 5 in the stem widening on heating to grip the bit. A layer 6 of nickel alloy is formed by electroless plating on the inner surface of the socket portion 4 of the bit to ensure subsequent separation of the stem 2 and bit 3. A control circuit 7 in the handle and a temperature sensing element within the stem 2 control the heating of the iron by a heating coil in the stem. The bit may be of copper alloy, the stem of iron and chromium, cadmium or alloys of chromium, cadmium and nickel may be employed for the coating.
Patent GB-1238449-A (GB)
IPC: H03K3/281
Filed: 1969-07-14
Abstract: 1,238,449. Transistor bi-stable circuits. SIEMENS A.G. 14 July, 1969 [15 July, 1968], No. 35305/69. Heading H3T. A bi-stable, such as a complementary pair of transistors 5, 10, has a single magnetic core 2 with only two windings of which a first 21 carries a steady current from the supply, and a second 22 carries a current when the bi-stable is in one state to produce a flux opposing that due to the first winding and carries no current when the bi-stable is in the other state, whereby the bistable always resumes after a power failure that state which it had before. The transistors, being normally off, are turned on by a signal at T5 base 6, whereupon T5 saturates and T10 assumes an amplifying mode to transmit a signal from a transformer 11 to an output 15. The current in winding 22 is twice that in winding 21 so that the magnetization of the core 2 is reversed. If the power supply is turned off then upon subsequently turning on again, a current flows in winding 21 which changes back the magnetization of core 2, this causing a pulse to be generated in winding 22 which turns on T5, T10. Thus the original state is resumed, and the core is remagnetized once more by the bistable current. If the bistable had not been conductive when the power supply stopped, then the core would have been magnetized already in the direction appropriate to the winding 21 current upon switch on, and no more than a spurious pulse would appear in winding 22, this being prevented from turning on the bi-stable by a capacitor 8. Means are provided to ensure that turn-on of the supply is rapid enough to ensure correct core response. The transformer 11 may supply more than one bi-stable from the same secondary or from respective secondaries, and more than one bi-stable may supply the same output 15 at a common emitter resistor 14. The transformer 11 and diode 12 may be replaced by a capacitor input. A second transistor may supplement T10 to enable A.C. signals symmetrical about earth to be gated; and a plurality of the bi-stable switches may be arranged in a crossbar switching bank or in a matrix. T5 may be a thyristor.
Patent GB-1252484-A (GB)
IPC: F16D65/14
Filed: 1969-04-30
Abstract: 1,252,484. Brake operating mechanism. D.B.A. S.A. 30 April, 1969 [14 May, 1968], No. 21981/69. Heading F2F. A brake operating mechanism comprises a spring responsive actuator 22 which is held in an inoperative position by fluid pressure acting on a piston assembly 28 thereof against spring loading. The piston assembly 28 comprises a tubular member 36 in which a brake control rod 50, 52 is slidably mounted. A mechanical release includes a tubular abutting element 60 threadedly received within the tubular member 36, engaging the inner end of the control rod 50, 52 and having a polygonal bore. A member 54 having a polygonal cross-section corresponding to the polygonal bore is slidably received therein and is manually rotatable to rotate the abutting element 60 and thus permit retraction of the control rod 50, 52 which allows brakes to be released when the actuator 22 is in the brakes applied condition. The member 54 is rotatable through an extension part 56 which is normally sealed in a fluid pressing service brake actuator 10 by a plug 55. In a modification (Fig. 2, not shown) the service application of the brakes is effected by hydraulic pressure and the abutting element is rotated through gearing.
Patent GB-1252935-A (GB)
IPC: H02M7/523
Filed: 1968-11-04
Abstract: 1252935 DC/AC converters UNION CARBIDE CORP 4 Nov 1968 [3 Nov 1967] 52120/68 Heading H2F. Polymeric films are treated with a relatively high voltage (e.g. 2000-15, 000 V) gaseous discharge to improve the affinity of the surface thereof, to inks, adhesives and other polar substrates. The high voltage is derived from an invertor 15, Fig. 1 supplied from variable voltage D.C. source 13 and comprising a step-up transformer 16, a bi-phase arrangement of thyristors 20, 22, a commutating capacitor 28, reactive current feedback diodes 34, 36 and commutating choke 38. Each thyristor is triggered alternately to send current through the half primary windings in turn. With Th20 conducting and Th22 blocked, current flows in the left hand winding. Autotransformer action produces a voltage 2E DC  at the anode of Th22 charging C28 to 2E DC  so that when Th22 is triggered the capacitor charge reverse biases Th20 turning it off and so on. A substantially square wave output is produced at the secondary winding terminals which are connected to electrodes, one on each side of the film as illustrated in Fig. 4 (not shown). One electrode is spaced from the surface and comprises a "knife edge" while the other is connected to a roller having a dielectric surface layer over which the film sheet is passed. The trigger circuit 40 is a multivibrator, preferably a free-running astable solid state oscillator or a unijunction astable oscillator. Alternatively monostable and bistable oscillators may be used. The operating frequency may be from 1000 Hz to 3000 Hz.
Patent GB-1257685-A (GB)
IPC: B65H3/24
Filed: 1969-11-28
Abstract: 1,257,685. Feeding sheets. INTERNATIONAL BUSINESS MACHINES CORP. 28 Nov., 1969 [11 Dec., 1968], No. 58278/69. Heading B8R. A card-feed mechanism comprises a first picker or pusher member to move the bottom card of a stack 22 along a first path, and a second picker or pusher member to move the card along a second path at an angle to the first path, the two picker members being reciprocated along the respective paths in opposite phase to one another by a linkage coupling the pickers. As shown, two pickers 88, 90 engage the long edge 82 of an 80-column card and move the card in the direction of arrow 24 through a slot (26, Fig. 1) in a side wall (28) and on to a base-plate along which reciprocates a plate 76 in the direction of arrows 70. The plate 76 moves rightwardly, Fig. 2, whilst the card is being moved by the pickers 88, 90, and then moves leftwardly so that a picker 80 engages the right-hand edge of the card and feeds the card at right-angles to its previous path into a reading apparatus. If 51-column cards are being used, a second picker 78 on the plate 76 engages the right-hand edges of such cards, and a pivoted part (46, Fig. 1, not shown) of the table supporting the stack springs to a vertical position to engage the side of the shorter stack 22. Driven rollers 44 projecting through slots in the pile table assist in forwarding the cards towards the plate 76. To reciprocate the plate 76 and pickers 88, 90, an L-shaped lever 116 is oscillated about a pivot 124 by a cam 112 coupled to a shaft 108 by a clutch 114. One arm 118 of the lever is pivoted to the plate 76 and the other arm 120 is pivoted to a T-shaped member 142. Support members 148, 150 for the pickers 88, 90 are connected to the ends of the cross-bar of the member 142. Picker or pusher construction.-Each picker 88, 90 which is made of stamped sheet metal, comprises a broad part 156, Fig. 3, with a struck-up feeding edge 86 and a narrow U- shaped flexible extension 158. The extension 158 is pivotal about a pin 162 on the support member 148 and the part 156 is pivotal about another pin 168 which is perpendicular to the pin 162. The flexibility of the extension 158 and the pivotal mounting allows the part 156 to tilt when engaging a distorted card. To prevent bending of the extension 158 when the edge 86 engages misaligned cards, a pin 176 on the support 148 engages in the U-shaped extension. The support members 148, 150 are carried by members 58, 60 pivoted at their lower ends.
Patent GB-1264350-A (GB)
IPC: A23L19/18
Filed: 1969-11-27
Abstract: 1,264,350. Potato snack. M. J. WILLARD. 27 Nov., 1969 [8 Jan., 1969[, No. 58064/69. Heading A2B. A potato snack is prepared by mixing potato solids with water to form a dough having between 40% and 50% solids by weight, and including sufficient available free gelatinised starch to cause the dough to expand at least 1.6 times when cooked and sufficient ungelatinised starch to prevent expansion greater than 3.0 times when cooked, extruding a piece from the dough into hot cooking oil and cooking the piece at a sufficient high temperature and for a sufficient time to cause the piece to expand to a thickness between 1.6 and 3.0 times that of the pieces prior to cooking and removing from the oil. Suitable potato products are potato granules, potato flakes, potato flour or diced dehydrated potatoes. The potato product may also contain pre gelatinised starch to improve the cohesiveness of the dough. A flavoured product may be obtained by mixing with the dough, a flavourant such as onion powder. The dough may be formed into a strip or piece having a closed ring cross section, by extrusion. The extruded piece may be cooked by dropping into cooking oil maintained at a temperature of 330‹F to 400‹F, and fried for 1 to 3 minutes.
Patent GB-1266292-A (GB)
IPC: A23L15/00
Filed: 1970-10-09
Abstract: 1,266,292. Dried egg product. R. LIOT and E. LIOT. 9 Oct., 1970 [21 Oct., 1969], No. 48192/70. Heading A2D. A dried egg product is prepared by a process that comprises incorporating into the liquid egg a sucroglyceride (the trans-esterification products of sucrose and natural triglycerides) or a sucrose ester of a fatty acid. All or part of the reducing sugars may be previously removed from the liquid egg.
Patent GB-1266973-A (GB)
IPC: G01L3/10
Filed: 1969-08-22
Abstract: 1,266,973. Measuring torque electrically. WESTLAND AIRCRAFT Ltd. Aug. 4, 1970 [Aug.22, 1969], No.41997/69. Headings G1N and G1W. A torque tranducer comprises a tube 10 waisted to form a housing 14 for one or more strain gauges 15, the tube ends being expansible to contact the inside surface of a hollow shaft 11 of which the applied torque is to be measured. The insertion end of the tube has a tapered entry for an expansion bolt 16 to provide a contact at 17 whilst the other end is engaged internally by two angled washers 20, one under the head of a bolt 19 the other engaging a further housing 18 whereby tightening of the nut 24 on the bolt expands the washers to press the tube into engagement with the shaft interval surface at 28. Signals from the gauges are led out by a rotary transformer 27.
Patent GB-1289015-A (GB)
Filed: 1970-06-15
Abstract: 1289015 Digital transmission systems; coding television BRITISH BROADCASTING CORP 20 April 1971 [15 June 1970] 28953/70 Headings H4F and H4P To reduce the number of digits particularly in television picture transmission, where successive brightness levels are coded into a binary sequence for transmission, each input, after coding is compared with a preceding signal and if the difference exceeds a determined amount a signal is transmitted defining the new level coarsely (low definition), together with an indication that coarse information is being transmitted; or if the difference is below the determined amount an updating signal is transmitted together with an indication that the signal is associated with a fine (high definition) adjustment. The coarse/fine indication signals are deleted at the receiver. Transmission; each picture element is coded into say an eight digit binary sequence and presented through an arithmetic unit 11 to processor 13 and compared with information corresponding to a previous element held in a store 14. If the difference is within say + 7, - 8  fine levels the least significant four bits are sent plus a bit to indicate operation in fine mode, even though the level may fall within an adjacent coarse band; store 14 is updated. At the receiver, processor 15 alters the word held in store 16 by the difference signal. If the difference exceeds +7, -8 the most significant four digits are sent representative of, the new coarse band, usually the mean of the band, plus a bit to indicate coarse mode, stores 14, 16 being updated accordingly. If the last four digits are 1000, a coarse signal is sent irrespective of the proximity of the previous signal, which provides a check on transmission errors. It is arranged that coarse information will be sent once every sixteen times each element is scanned to prevent persistence of error while "still" pictures are transmitted. Incoming words are modified by unit 11 by adding to them a word which changes once during each scan. The sequence of added words causes the level of a constant input signal to be modified to explore a range of sixteen consecutive fine divisions which repeats itself every sixteen scans and ensures that for a constant input, coarse (i.e. error correcting) information is sent periodically. The unit 18 removes this modification and can be synchronized with unit 11 by synchronizing signals sent between scans. In use with colour television the value of an element can change from colour to colour even when the brightness is constant. To prevent the coarse/fine system operating continually in the coarse mode additional circuitry can be added so that information contained in stores 14, 16 is compensated coarsely for the colour in use (corresponding points in successive fields or frames are compared), any necessary correction being made by transmitting a "fine" adjustment signal. Tables are included in the Specification explaining operation of the system in arithmetical terms.  It is stated that the reduction of number of bits from 8 to 5 provides a 37¢% saving in data rate.
Patent GB-1289220-A (GB)
IPC: G02B27/28
Filed: 1970-10-28
Abstract: 1289220 Optical scanning devices INTERNATIONAL BUSINESS MACHINES CORP 28 Oct 1970 [5 Nov 1969] 51101/70 Heading G2J [Also in Division H4] A light deflector and scanner comprises means for circulating light in a progressive loop path, i.e. a path in which light both loops and executes progressive motion e.g. scanning, the circulating means including optical means 43 for coupling light into the circulating means and for causing the light to follow the path when the polarization is in a first state, and for ejecting the light from the circulating means when the polarization is in a second state, and means 42 positioned in the path for selectively altering the polarization state of the scanning light so that light is ejected from the circulating means. The optical means may be that of Specification 1285640. The scanning may be accomplished by arranging mirror 31 off-axis. The element 42 may be an electro-optic switch with a number of pairs of electrodes Fig. 4 (not shown).
Patent GB-1294885-A (GB)
IPC: G01S7/36
Filed: 1969-11-24
Abstract: 1294885 Pulse radar MESSERSCHMITTBOLKOW-BLOHM GmbH 24 Nov 1969 [26 Nov 1968] 57336/69 Heading H4D In a missile radar system in which the missile homing radar is switched on after the missile has flown for a pre-selected time and after a separate "phantom" transmitter has been switched on operating at the same p.r.f. but at a slightly different carrier frequency, it is arranged that the pulses from the missile homing radar and the "phantom" transmitter arrive at the target simultaneously. A missile-carrying aircraft releases a balloon carrying a transmitter before launching a missile at a target. When the missile radar is switched on the transmissions from the balloon mounted transmitter are received by. a backward facing aerial 20. These pulses undergo a delay #t and then trigger a ramp generator 23. When the ramp voltage reaches a predetermined level, the output thereof is reset to zero and a pulse generator 24 triggers a transmitter 27. The delay #t plus the time taken for the ramp to reach the predetermined level equals the pulse repetition period of the received pulses. The pulses from the transmitter 27 have a slightly different carrier frequency to the received pulses, the difference being determined by an analysis of the electronic counter measures available to the target. In a ground based launcher the separate transmitter would be mounted on the ground in the vicinity of the launch site. It is stated that as long as the missile does not deviate by more than 8 degrees from the line joining the transmitter and target a camouflage pulse of width one microsecond greater than the missile radar pulse will mask the missile pulses.