baber/WOPTO huggingface dataset:
Patent GB-1461042-A (GB)
Title: Grinding disc for disc mills
IPC: B02C7/12
Filed: 1975-03-19
Abstract: 1461042 Disk-mills PALYI-HANSEN INTERNATIONAL APS 19 March 1975 [5 April 1974] 11460/75 Heading B2A A grinding disk comprises a radially inner flange 14 and a radially outer flange 12. An annular groove 22 in the outer flange supports toothed saw blades 24 and spacers 26. The disk has a plurality of annular webs 16, and toothed grinding tools 28 are secured by screws 36 in the annular spaces 18 between the webs, the teeth 30 being staggered in adjacent rows. An air hole 32 is provided in each tool. The tools may also be secured to the webs 16 or to the flanges 12 or 14. The spacing and air holes facilitate transfer of heat from the grinding surface and interchange and replacement of grinding tools. The disk may be arranged with a vertical or horizontal shaft, and with one disk rotatable or both disks rotatable or contrarotatable and the peripheral speed may vary between 30 and 200 m/s.
Patent GB-1122112-A (GB)
Title: Method of inhibiting polymerization of acrylamide
IPC: C08F20/56
Filed: 1966-03-16
Abstract: The polymerization of acrylamide is inhibited by mixing therewith at least one compound selected from nitrosobenzene, nitrosoorthocresol, nitrosometacresol, metanitrosobenzoic acid, paranitrosobenzoic acid, methyl metanitrosobenzoate, methyl paranitrosobenzoate, diethylamine, sodium - 1 - naphthylamine - 4 - sulphonate and 2,3 - dicyanohydroquinone.  The amount of inhibitor employed is generally in the range 0.005-1.0% by wt. of the acrylamide.  When the acrylamide is made by neutralizing acrylamide sulphuric acid salt, the inhibitor may be added during the neutralization step, or the subsequent concentration step, before crystallization. The nitroso compounds and 2,3-dicyanohydroquinone are more effective inhibitors than the amino compounds, but the latter cause less discoloration; a combination of the two classes of compounds is preferred.
Patent GB-1042945-A (GB)
Title: Improvements in anti-theft devices
IPC: B60R25/10
Filed: 1963-03-22
Abstract: 1,042,945. Preventing unauthorised use. ELECTRO PRECISION. March 22, 1963 [March 24, 1962; Feb. 24, 1963], No. 11545/63. Heading F1B. [Also in Division G4] In a vehicle theft alarm system of the type including means for preventing an alarm relay being actuated for a predetermined time after the alarm is set (see Division G4) the alarm relay 6, Fig. 1 (not shown) is provided with a pair of contacts 17 which open the ignition circuit when the alarm is actuated.
Patent GB-346573-A (GB)
Title: Improvements in or relating to the construction of piles or columns
IPC: E02D5/50
Filed: 1930-04-11
Abstract: 346,573. Piles or columns. BRITISH STEEL PILING CO., Ltd. and HILEY, A., 54A, Parliament Street, London. April 11, 1930, No. 11607. [Class 68 (ii).] In making a composite pile or column, a tube is driven into the ground with a pointed shoe in front of it, and a lower pile portion is driven down so as to carry down further the shoe ; the tube is then filled with concrete and withdrawn by vertical vibratory movements. As shown, a tube A with a pointed shoe A3 is driven by a hammer, and a pile B, designed to form the bottom of the pile, is dropped into the tube A until a bolt B<1> traversing its upper end rests on the top end of the tube A, the lower end of the pile B being then some distance above the shoe A<3>. The pile is then slung by cords c<1> and hooks c<3>, the bolt B<1> is withdrawn, and the pile is gradually lowered until its end rests on the shoe A<3>. the annulus surrounding it being then filled with mortar previously placed in the tube A. The cords c<1> and hooks c<3> at the top end of the pile B are then disengaged and removed, and the pile B is rammed by means of a hammer and dolly. The shoe A<3> is pushed down, the pile B being guided by the rim A<4>, Fig. 8, and suitable distance-pieces elsewhere in the tube A. The dolly is then withdrawn from the tube A, into which is then placed a reinforcing-cage, and then concrete. The tube A is then extracted as described in Specification 197,430, [Class 68 (ii), Subaqueous buildings &c.], thus tamping the concrete. The parts A3, A<4> may be integral, or the part A may be integral with the tube A<1>, or the part A<3> may be in sections. The pile B may be of timber or reinforced concrete, or a steel tube filled with solidified concrete or steel sections.
Patent GB-1349893-A (GB)
Title: Silyl vinyl ethers and polymers thereof
IPC: C07F7/18
Filed: 1971-04-28
Abstract: 1349893 Coated products E I DU PONT DE NEMOURS & CO 28 April 1971 [28 April 1970] 11694/71 Heading B2E [Also in Divisions C3 and G2]  Curable coating compositions are formed from organic solvent solutions of polysilicic acid and copolymers derived from 0.2 to 60 mole % of novel silyl vinyl ethers of the formula  (wherein X denotes C 2-10  alkylene or C 4-16  oxyalkylene, R and R' denote C 1-6  alkyl and y denotes 0, 1 or 2) and 40 to 99.8 mole % of a mixture of 100 to 40 mole % of a fluoroolefin of the formula CZ 2 :CZ'Z" (wherein Z and Z' independently denote H, F or Cl and Z" denotes H, F, Cl, C 1-4  alkyl or perfluoroalkyl, or C 1-4  alkoxy or perfluoroalkoxy) and 0 to 60 mole % of a mono- or poly-hydroxy alkyl vinyl ether having at least one terminal hydroxy group and whose alkyl portion contains 1 to 20 carbon atoms and optional ether oxygen atoms, an alkyl vinyl ether wherein the alkyl portion contains 1 to 20 carbon atoms and optional ether oxygen atoms, a (C 6-20  aryl) vinyl ether, a ( 7-20  aralkyl) vinyl ether, a monoalkyl, mono-vinyl ether of a mono- or polyalkylene glycol, ethylene, propylene or a mixture thereof. These compositions may be applied by dipping, flour coating, spraying or doctoring to wood, metal, glass and various polymer substrates such as sheets of acrylic polymers, polyesters (optionally with fibre filler), e.g. polyethylene terephthalate, polycarbonates, polyamides, polyimides, cellulosic thermoplastics, P.V.C., polyvinyl fluoride, polystyrene, polyoxymethylene or A.B.S. terpolymer, films, windows, skylights, windshields and ophthalmic lenses. Alternative coating compositions based on copolymers derived from 0.1 to 25 mole % of the above silyl vinyl ethers and 99.9 to 75 mole % of a mixture of 100 to 85 mole % of formaldehyde or trioxane and 0 to 15 mole % of an alkylene oxide, dioxolane, (C 1-20  alkyl) vinyl ether or mixture thereof optionally stabilised by solution ester capping, are used to coat glass roving, which is thereby rendered more easy to chop.
Patent GB-183802-A (GB)
Title: Improvements in or relating to photographic film cartridges and protective leading strips or backings therefor
IPC: G03C3/02
Filed: 1922-04-26
Abstract: 183,802. Kodak, Ltd., (Assignees of Jones, J. G.). July 25, 1921, [Convention date]. Roll spools.-To prevent edge fogging, the backing or extension strip of a photographic or kinematographic roll film is made slightly wider than the distance between the spool flanges and is of different thickness at different points in its width. Alternative constructions are described. The marginal edges D<1>, Fig. 2, may be tapered off, or stepped in thickness; or longitudinal grooves L, Fig. 9, may be formed which buckle in slightly when wound on the spool with the film, as at L<2>. The Specification as open to inspection under Sect. 91 (3) (a) comprises other constructions for the backing or leading strip. The edges may be serrated or the backing or strip corrugate longitudinally, the corrugations M<1>, Fig. 12, within the width of the film being flattened out when wound on the spool, forcing the outer resilient margin M<2> against the spool flanges. These alternatives are not included in the Specification as accepted.
Patent GB-402397-A (GB)
Title: A method of producing oscillograms, more particularly for television purposes
IPC: B02C17/06
Filed: 1932-04-25
Abstract: 402,397. Oscillographs ; television ; R÷ntgen-ray tubes. KERR, A., 45, Pannierstrasse, Neukolln, Berlin. April 25, 1932, No. 11791. Convention date, April 25, 1931. [Class 37.] Television and sound-picture records are produced by means of controlled cathode rays which strike an anti - cathode 2 located in the tube and form X-rays, the X- rays being separated into a thin pencil or pencils by means of a perforated shutter 7 so that a picture external to the tube is obtained on a fluorescent screen 8. The Specification as open to inspection under Sect. 91, comprises the application of the device to oscillographs generally. This subject-matter does not appear in the Specification as accepted.
Patent GB-289638-A (GB)
Title: Improvements in plants for extracting gold from sea-water
IPC: C01G7/00
Filed: 1927-05-03
Abstract: 289,638. Cernik, B., and Stoces, B. May 3, 1927. Wet processes of extracting gold; precipitating.- Gold is extracted from sea water by passing the water through a layer of material which combines with or retains gold, laid in the open on a screen or lattice. The plant may comprise a reservoir b partitioned off from the sea by a wall m, and a lattice d supported above the bottom of the reservoir and covered with material e such as pyrites or active carbon, the space under the lattice communicating with the sea by a passage c, and the tidal movement causing the, sea water to pass alternately in both directions through the material e. In a modification, which may be attached to ships, the lattice and the layer of material may be placed in an inverted U-tube both ends of which are immersed in the sea, a propeller or pump being provided to cause a continuous flow of the water.
Patent GB-1121256-A (GB)
Title: Leg for supporting a marine structure
Inventor: LUQUE RAFAEL FERNANDEZ
IPC: E02B17/02
Filed: 1967-03-14
Abstract: 1,121,256. Leg for offshore structures. SHELL INTERNATIONALE RESEARCH MAATSCHAPPIJ N.V. 14 March, 1967, No. 11822/67. Heading E1H. Legs 3 for supporting a marine structure consisting of a platform 1 and derrick 2, are each provided with a substantially flat element 9 of negative buoyancy having an opening through which the leg passes and each element 9 is freely displaceable along its respective leg over at least part of the length of the leg. The elements have no fixed connection with the legs 3 and they may be metal plates of circular or other configurations. They prevent the legs from being non- uniformly loaded by the action of even strong currents round the base of the legs.
Patent GB-1199892-A (GB)
Title: Electrochemical Cell Circuits
Inventor: BISSETT THOMAS B
IPC: H03M1/00
Filed: 1969-03-06
Abstract: 1,199,892. Electronic counters; measuring Charge. BISSETT BERMAN CORP. 6 March, 1969 [7 March, 1968], No. 11990/69. Headings G4A and G4H. [Also in Division H3] An electrochemical cell of the type which becomes high resistance when all the active material has been transferred from one electrode to the other is connected in the charge or discharge path of a capacitor so as to transfer a predetermined quantity of the material from one electrode of the cell to the other. The transfer is thus dependent upon the capacitor charge and not directly upon the current magnitude or time of flow. Fig. 5 shows a circuit for measuring digitally the amount of material 306 which has been transferred to electrode 306 of an external cell 300, by repeatedly discharging a capacitor through the cell until all the material has been replaced. A multivibrator 332, 334 periodically energizes and de-energizes a relay 330 (via amplifier 354, 356) to changeover contacts 310. In the upper position a capacitor 308 is charged to an adjustable voltage and in the lower position it is discharged through the cell. A counter 418 counts the pulses until the material 306 has all been transferred to electrode 302 whereupon the voltage across the cell due to the current therethrough rises to a value sufficient to change over a switching circuit 376, 378 which causes a clamp transistor 394 to conduct and stops the multivibrator. The counting is started by operating button 414. This changes over a Schmitt Trigger 360, 362 to render conducting a transistor 396 whereby a lamp 422 is lit and clamp 394 is rendered non-conductive to allow the multivibrator to start. The pulsing current through transistor 356 and a diode 412 maintains a capacitor 392 charged and thus the Schmitt Trigger operated until the pulsing has ceased for a given time. This prevents the pulsing being stopped by short-duration spurious rises of voltage across the cell 416 in a stop switch.
Patent GB-1537546-A (GB)
Title: Anti-intrusion miniradar
IPC: G01S13/56
Filed: 1976-03-25
Abstract: 1537546 Intruder detectors PHILIPS GLOEILAMPENFABRIKEN NV 25 March 1976 [26 March 1975] 12035/76 Heading G4N [Also in Division H4] A Doppler effect anti-intrusion mini-radar with an automatic monitoring circuit 31 and means for preventing false alarms includes an adjustable high-gain AF amplifier 18 connected to an alarm-triggering circuit 29 and preceded by an automatically gain controlled input preamplifier stage 15, and has a delayed detection circuit 20 with two outputs, of which output 22 provides for inhibition of the alarm triggering circuit 29 and output 21 is connected to a blocking input 23 of a high time constant control circuit 24, which circuit has a signal input 25 connected to the input 28 of alarm-triggering circuit 29 and an output 26 connected to a gain control input 16 of preamplifier 15. Control circuit 24 adjusts the gain of preamplifier 15 if the level of the AF signal varies slowly, e.g. because of slow background noise variations, but the delayed detection circuit 20 inhibits such operation of circuit 24 if there is an abrupt increase in the AF signal. Circuit 20 also inhibits triggering of alarm circuit 29 unless the filtered signal at input 28 is above a threshold level after the end of a preset delay, thereby preventing triggering by a sudden increase due merely to interference or a fly passing near the antenna of the mini-radar. Rejector filter 27, tuned to twice the local A.C. mains frequency, prevents triggering by nearby fluorescent light tubes. The microwave section 10 of the mini-radar includes a portion 10A provided by a Gunn effect diode generator supplied via a stabilizing circuit 12 and a portion 10B, comprising a microwave detecting and demodulating diode, e.g. a Schottky diode. The A.C. Doppler frequency component is applied by capacitative coupling to preamplifier 15 and the entire voltage collected at terminal 13 is applied to the automatic monitoring device 31. The device 31 acts if the detected D.C. voltage component drops below a certain value and also if the value of the D.C. component or the peak value of the sum of the D.C. component plus the A.C. component exceeds a critical level. The preamplifier 15 is as in French Specification 1,566,248.
Patent GB-1438913-A (GB)
Title: Exhaust gas detection device
IPC: F01P11/00
Filed: 1974-03-19
Abstract: 1438913 Detecting exhaust gases A E TROOP 19 March 1974 [26 March 1973] 12099/74 Heading G1B A device for detecting the presence of gas leakage from an engine into its cooling system comprises an at least partially transparent or translucent chamber 4 which, in operation, contains a liquid test reagent 2 which changes visibly, e.g. in colour, when contacted with exhaust gases (CO and CO 2 ), the change being reversible when the gas is displaced by aspirating the device with air by means of the aspirator bulb I attached to the tube 5a. At the lower end, the chamber is connected with a sampling nozzle 7 containing a non-return valve 6 via a gas diffuser 15 through which sampled gas passes into the liquid. Purging of the apparatus is achieved by removing the nozzle assembly (with the device inverted) and introducing air via the aspirator.
Patent GB-482074-A (GB)
Title: Noise eliminators for wireless receivers
IPC: H03G11/00
Filed: 1937-04-28
Abstract: 482,074. Wireless receiving systems. GABRILOVITCH, L. April 28, 1937, No. 12100. Convention date, April 28, 1936. [Class 40 (v)] The interference impulses in the out put of an auxiliary detector D<1> fed from an auxiliary H.F ampliner A<1> are separated by a high pass filter F and applied through an amplifier and rectifier R to block the grid of the main H.F. amplifier A.
Patent GB-1117397-A (GB)
Title: Improvements in the manufacture of milk curds
Inventor: GOUJARD MARIE PIERRE
IPC: A23C19/05
Filed: 1967-03-15
Abstract: A process for the manufacture of milk curd comprises the steps of acidifying whey derived from a previous curdling operation to a pH outside the range in which fermentation takes place, and mixing the thus acidified whey with milk.  The pH is preferably in the range 0.5-2.5.  The acidification may be effected chemically or physically, for example by electrodialysis.  The curd and whey may be separated by centrifuging at 250-1,000 g for 1-10 mins.  A suitable apparatus comprises means for mixing the milk and whey, a separator for the curds and whey, and means for acidifying the whey, which latter may be a mixer for mixing with acid or an electrodialysis apparatus, which may comprise four-compartment cells defined by alternate anionic and cationic membranes, the said cells being disposed between end anodic and cathodic compartments, and means for circulating the appropriate liquids in the various compartments.
Patent GB-644519-A (GB)
Title: Improvements in or relating to forming means for profile grinding wheels
IPC: B24B53/08
Filed: 1948-05-03
Abstract: 644,519. Trueing grinding wheels. PORTER. C. B. A., and TOOLMASTERS, Ltd. May 3, 1948. No. 12147. [Class 60] The template-follower member 23 in the apparatus of Specification 573,877 is provided with a guard constituted by two wings 36, 37 mounted on the follower by means enabling them to be bodily displaced towards and away from each other in a direction perpendicular to both the rocking axis of the follower and a line bisecting the angle at the apex of the wings The follower is detachably held in the end of a shaft 10 by a draw bolt 25. The shaft 10 carries a knob 14 and a pulley 20 to which is pinned a steel band 18 to transmit the rocking motion to the dressing tool holder (not shown). The wings 36, 37 are attached to blocks 30, 31 which are a sliding fit in a guide way 29. A nut 34 and a screw 35 serve to clamp the blocks after the wings have been set with their working edges 36<SP>1</SP>, 37<SP>1</SP> tangential to the follower tip.
Patent GB-807042-A (GB)
Title: Improvements in and relating to transistors
Inventor: HOSELITZ KURT
IPC: H01L21/00
Filed: 1955-04-27
Abstract: 807,042. Transistors; electrolytic etching and plating of semi-conductors. MULLARD RADIO VALVE CO. Ltd. April 27, 1955, No. 12150/55. Classes 37 and 41. A field effect transistor is produced by electrolytically etching a semi-conductor mass across an entire dimension to produce a narrow central region which is plated with impurity by means of an electrolytic jet less than 0.03 inch wide, and heating to alloy the impurity to form a region of opposite conductivity type. A pair of jets 4, 5 of an electrolyte under pressure are directed on to opposite faces of an N-type Ge wafer 1 held in holder 2. A current source is connected through a rerversing switch to electrode 8 immersed in the electrolyte and 7 fixed to the wafer. The electrolyte InSo 4  produces etching for one current direction and deposition. of In for the other. The holder 2 is traversed relative to the jets by an electric motor with a reciprocating motion to etch troughs extending the width of the wafer and then to deposit In along them. After deposition the device is heated sufficiently to produce P-type regions beneath the deposits but which are separated by a thin zone of the original N-type Ge. Electrodes are then attached to the end of the wafer. A cylinder may be used instead of the wafer (Fig. 3), and in either case the motor may be dispensed with and a fish tail jet used to give a trough extending the width of the wafer or cylinder. In an alternative method of manufacture a cylinder of N- type Ge is rotated about its axis relative to a single jet to form an annular recess with an annulus of In deposited in it, the heating being sufficient to form an annular zone of P-type Ge with an N-type core remaining. The etching and depositing current should be between 16 and 120 amps./cm<SP>2</SP>.
Patent GB-545929-A (GB)
Title: Improvements in or relating to blocking layer rectifier cell units
IPC: H01L25/03
Filed: 1941-09-19
Abstract: 545,929. Asymmetrically-conducting resistances. PHILIPS LAMPS, Ltd. (Naamlooze Vennootschap Philips' Gloeilampenfabrieken). Sept. 19, 1941, No. 12162. [Class 37] Each base plate 1 of the elements of a rectifier carries a number of separate counter-electrodes each on its semi-conducting layer and a set of cooling plates 5 of U-section on its other side. Connecting leads for the electrodes are led to a contact bar 13 supported by the unit. Thus, the leads 17, 18 from the part counter-electrodes combine at an insulating bush 19 to connect to a tab 22, while the base plate connects with a tab 24, and so on throughout. Specification 545,928 is referred to.
Patent GB-817725-A (GB)
Title: Improvements relating to reeling and unreeling equipment
Inventor: BARANY THOMAS EDWARD
IPC: B65H23/198
Filed: 1956-04-20
Abstract: 817,725. Automatic control systems for winders. BRITISH THOMSON-HOUSTON CO. Ltd. April 12, 1957 [April 20, 1956], No. 12173/56. Class 38 (4). [Also in Group XXXVII] In an arrangement in which a motor or motors M1, M2 energized by a generator G and driving a roller or rollers is or are connected in a loop with an electric machine RG (a motor during reeling and a generator during unreeling) coupled to the reel, and a booster B the excitation of which is controlled in accordance with the current in the loop, a proportion of the IR drop in the loop is compared with a similar proportion of the booster output and the difference is applied to adjust through a motor RhM and a rheostat Rh1 the strength of the field RGX of the machine RG in order to maintain a substantially constant voltage output, and a substantially constant booster voltage. The booster is controlled to maintain a substantially constant loop current and hence tension in the element being reeled, by an amplidyne A1 having a field due to winding AIX energized in proportion to the loop current opposing a field due to a reference winding AIY the energization of which may be predetermined by a tension selecting potentiometer VR. Inertia compensation is provided by a further winding AIZ which is energized by an amplidyne A2 in accordance with the current through the main generator G as measured by the voltage drop across compoles CG. The compensation is modified as the mass varies during reeling or unreeling by a potentiometer Rh2 also driven by the motor RhM. A unidirectional coupling may be included to prevent back driving of potentiometer Rh1, Rh2 during a breakage, or alternatively the circuit of motor RhM may include a rectifier. The amplidynes could be replaced by magnetic amplifiers. Specification 817,726 is referred to.