baber/WOPTO huggingface dataset:
Patent GB-872571-A (GB)
Title: Improvements in or relating to receivers for use in frequency shift telegraphy
IPC: H04L27/14
Filed: 1957-09-24
Abstract: 872,571. Receivers for alternating current telegraphy. PHILIPS ELECTRICAL INDUSTRIES Ltd. Sept. 24, 1957 [Sept. 27, 1956], No. 29951/57. Class 40(3) In a receiver for frequency-shift telegraphy in which the signals demodulated at 3 are applied to control a relay 20 via an electronic pulse repeater and limiter 14, 15, a D.C. restorer is provided between the detector and pulse repeater in the form of two parallel connected branches each comprising the series combination of a capacitor 25, 26 and a diode 27, 28, and a bias supply 29, 29<SP>1</SP> connected across the diodes in the direction to cut them off. The input signals, Fig. 2(a), which may have the D.C. level displaced by an amount #E due to variations in transmitter frequency or receiver tuning, appear at terminals 40, 44, and the output, Fig. 2(d), which is taken from terminals 43, 44 has the D.C. level restored correctly. The peak-to-peak value E of the input signal is adjusted by input potentiometer 30 to equal the value of the bias supply 29, 29<SP>1</SP>. In operation, the first signal element 8 causes capacitor 25 to be charged negatively via diode 27 to a potential E/2 +#E and at the same time capacitor 26 to be charged positively to a potential 1/2 E-#E equal to the algebraic sum of the potential of capacitor 25 and bias source 29, 29<SP>1</SP>. The signals appearing at the plates of capacitors 25 and 26 remote from the input terminal 40 thus take the form shown at Figs. 2(b) and 2(c) respectively with the result that the mean signal obtained from the terminal 43 at the centre-tap of the bias source has the D.C. level converted. During periods of rest grid current flowing to valve 14 may cause the charges in capacitors 25-26 to be altered with the result that the D.C. level is incorrect when signalling is resumed and the first signal element distorted. This effect is avoided by connecting the capacitors to resistor networks 31, 33 and 32, 34 which are supplied from the anode of the second stage 15 of the pulse repeater with signals in phase with the signals applied to the D.C. restoring circuit but of greater amplitude. The grid current for value 14 is then supplied via the resistor networks and the charges in capacitors 25 and 26 are maintained unaltered. As an alternative, the network may be supplied with signals obtained from the output of demodulator 3. In a modification, Fig. 3 (not shown), bias source 29, 29<SP>1</SP> is replaced by a transformer and half wave rectifier circuit energized by the incoming signal applied to demodulator 3.
Patent GB-158758-A (GB)
Title: An improvement relating to the collection of gases in chambers
IPC: F17B1/00
Filed: 1919-12-03
Abstract: 158,758. Carpenter, C. C. Dec. 3, 1919. Jet apparatus.-An injector is arranged in a gas-holder or other chamber for collecting gas to agitate and mix the gas in the chamber, the injector being operated by gas which is being collected or has been collected. As shown, the injector nozzle a arranged at the lower part of a gas-holder is operated by some of the gas from the main that delivers to the holder, this gas being withdrawn through a pipe b and compressed by a pump c to issue through a pipe d.
Patent GB-814889-A (GB)
Title: Improvements in or relating to ovens
Inventor: MURPHY ARTHUR YOAKLEY
IPC: H01J9/20
Filed: 1954-10-21
Abstract: 814,889. Electric ovens. ELECTRIC & MUSICAL INDUSTRIES Ltd. Oct. 21, 1955 [Oct. 21, 1954], No. 30296/54. Class 39(3) [Also in Groups XII and XIII] A continuous conveyer 4 comprising a chain assembly of metal links stretched around drums 2 and 3 is mounted in an oven 1 formed of separate sections 7 bolted together and provided with gas-fired or electric heaters 9 associated with fans 10 blowing hot air over the upper run of the conveyer. Fans 11 in the lower oven section blow cooling air over the return run of the conveyer, which air rises to provide additional heat in the upper oven section. An additional heater 9 and fan 10 is provided in the last oven section 8 which has an end wall. Cathode ray tube envelopes 6 are mounted in chucks or holders 5 in the conveyer and are traversed through the oven, being subject to a maximum temperature of 400-500‹C. in order to dry the tubes, to decompose binders or to drive off films of organic substances.
Patent GB-352343-A (GB)
Title: An improved cot
IPC: A47D7/02
Filed: 1930-10-09
Abstract: 352,343. Drop-side cots. EVERARD, F. W., 23, Clarendon Gardens, Wembley, and GILL & REIGATE, Ltd., 25, George Street, Hanover Square, both in London. Oct. 9, 1930, No. 30306. [Class 52 (ii).] In a drop-side cot, all four sides are connected together so that they can be raised or lowered simultaneously, and are counterbalanced by the weight of the mattress and child, so that the mattress is lowered or raised as the sides are raised or lowered. In the device shown, cords H, running over pulleys C on the uprights A, are secured at one end to the mattress platform I, and at the other end to inner frames B, secured to the dropsides F and having sliding engagement with the uprights A. Means, not shown, may be provided for securing the mattress platform in any desired position.
Patent GB-1504933-A (GB)
Title: Aerobic process for the treatment of sewage in the presence of sodium hydroxide
IPC: C02F3/26
Filed: 1976-07-19
Abstract: 1504933 Aerobic sewage treatment AIR PRODUCTS & CHEMICALS Inc 19 July 1976 [19 July 1975] 30327/75 Heading C1C Waste water is treated by the activated sludge process by admixture with activated sludge in aeration tank, contacting the mixture with O 2  or O 2 -enriched air and introducing NaOH into the mixture to neutralize at least part of the CO 2  evolved, said method being performed so that the temperature of the mixture in the aeration tank does not exceed 35‹ C. Specification 1,424,801 is referred to.
Patent GB-363748-A (GB)
Title: Improvements in or relating to rolling stock
IPC: B61F5/32
Filed: 1930-10-10
Abstract: 363,748. Railway vehicle undercarriages. SPENCER, MOULTON, & CO., Ltd., G. and GLASCODINE, R. T., 2, Central Buildings, Westminster. Oct. 10, 1930, No. 30360. [Class 103 (vi).] Each axle-box 4 of a railway vehicle is provided on its upper surface with a seating 7 on which rests a substantially flat pad of rubber 8 for absorbing high frequency vibrations, such pad being surmounted by a cover-plate 10 that distributes the load uniformly over the pad. In the construction shown, the load is transmitted to the axle-boxes by means of equalizer bars 3, Fig. 1, the ends 9 of which are prevented from lateral displacement by flanges 24 on the cover-plates 10 and are provided with notches 12 to engage over projections 11 on the cover-plates. The vertical movement permitted to the cover-plates owing to the compression of the pad is guided by means of depending lugs 14 on these plates working in grooves 13 in the side walls of the axle-boxes. At these parts the rubber pads 8 may also have depending lips 17, thus furnishing some longitudinal resilience between the axleboxes and equalizer bar 3. In a modification the rubber pad is entirely flat and the axle-box and cover-plate are each provided with a continuous peripheral flange embracing the pad on all sides. In place of a single pad of rubber the cushion may be formed of a number of rubber blocks 26, Fig. 7, moulded through a metal plate 27 with gaps 28 left between the blocks for expansion of the rubber when under compression. When equalizer bars are not employed the springs supporting the vehicle frame may bear directly on the cover-plates. Specification 363,749 is referred to.
Patent GB-704109-A (GB)
Title: Improvements in or relating to fractionation with solid adsorbents
IPC: B01D53/08
Filed: 1951-12-31
Abstract: A continuous process for separating hydrocarbon mixtures into two components comprises contacting the mixture with a solid adsorbent, stripping the adsorbent with flue gas to remove adsorbed hydrocarbons, partially separating the mixture of flue gas and hydrocarbons by cooling, contacting the remaining hydrocarbons and flue gas with a second solid adsorbent and recycling the adsorbent to the stripping zone.  Adsorbents referred to are coconut charcoal and other activated carbons, silica gel, bauxite and activated alumina. Hydrocarbon mixtures which may be treated are petroleum naphthas and mixtures of iso and normal paraffins, aromatics and paraffins, and olefins and paraffins.  The hydrocarbon vapours may be contacted countercurrently with the adsorbent, or a fluidized adsorbent may be used; alternatively the adsorbent may be contacted with the liquid hydrocarbons.ALSO:A continuous process for separating hydrocarbon mixtures into two components comprises contacting the mixture with a solid adsorbent, stripping the adsorbent with flue gas to remove adsorbed hydrocarbons, partially separating the mixture of flue gas and hydrocarbons by cooling. contacting the remaining hydrocarbons and flue gas with a second solid adsorbent and recycling the adsorbent to the stripping zone.  Adsorbents referred to are coconut charcoal and other activated carbons, silica gel, bauxite and activated alumina.  Hydrocarbon mixtures which may be treated are petroleum naphthas and mixtures of iso and normal paraffins, aromatics and paraffins, and olefins and paraffins.  The hydrocarbon vapours may be contacted counter-currently with the adsorbent, or a fluidized adsorbent may be used; alternatively the adsorbent may be contacted with the liquid hydrocarbons.
Patent GB-922760-A (GB)
Title: Improvements in or relating to impedance measurement
IPC: G01R27/02
Filed: 1959-09-07
Abstract: 922,760. Indicating-apparatus. SYLVANIA ELECTRIC PRODUCTS Inc. Sept. 7, 1959 [Nov. 13, 1958], No. 30519/59. Class 106 (4). [Also in Group XXXVI] In a slotted transmission line apparatus having a detector probe extending through the slot and supported for axial movement along the line, a scale movable along a guide to facilitate measurements of axial displacements of the probe is provided, the scale being calibrated in fractions of a wavelength. Probe 13, Fig. 5, is mounted in a probe slide 15 in order to facilitate its movement to a desired position, the probe slide carrying a cursor 39. The scale is set up for a desired frequency by positioning in accordance with the frequency a chart 33 on a pair of rollers, relative to a line 37 on a glass cover, and the whole scale assembly is mounted to slide on a guide 23 to which it may be clamped by a lever 69. Readings obtained by a known procedure are used in conjunction with a Smith chart to obtain impedance readings of a load 7, Fig. 2, when the apparatus is energized by a generator 6, probe positions for a maximal and/or minimal reading being found on a standing-wave ratio detector 16. The scale may be centre-zero, or have a zero at one end. An alternative adjustable scale arrangement described with reference to Figs. 16 and 17 (not shown), may comprise a spring of say 50 turns which is adjusted in length by a screw arrangement to a half wavelength for the desired frequency, the intervals between turns being 0.01 #.
Patent GB-641079-A (GB)
Title: Improvements in or relating to pressure-tight glands
IPC: B01F15/00
Filed: 1946-10-14
Abstract: 641,079. Stuffing-box substitutes. ANGLOIRANIAN OIL CO., Ltd., and RICHES, T. W. J.' Oct. 14, 1946, No. 30601. [Class 122(v)] [Also in Group XVII] A removable, hollow stopper 11 is formed at its upper end with a seating 13 for a spherical member 14, formed on or secured to the spindle 10 of a stirrer or like device passing through the stopper, and with a grease cup in the form of an annular channel 12 around the seating, spring means 22 serving to maintain the spherical member on its seating to effect a seal. The spherical member is in the form of a steel ball welded to the spindle and the spring 22 bears at its upper end against a perforated steel ball 21 in engagement with the end of a tubular extension 15 of the stopper and at its lower end against conical collar 23 which bears upon a seating 18 formed between tubular portions 16, 17 of a stirrer device so as to centralize the spindle with the stopper.
Patent GB-733656-A (GB)
Title: Improved method and means for the production of comestible materials
Inventor: TAYLOR GEORGE EDWARD
IPC: A23G9/26
Filed: 1952-12-03
Abstract: 733,656. Extruding ice-cream &c. MIDLAND COUNTIES DAIRY, Ltd. Dec. 3, 1953 [Dec. 3, 1952], No. 30603/52. Class 87 (2). Apparatus for extruding comestibles which are in the partly solidified or plastic state during production, e.g. ice-cream and margarine, comprises a chamber 15, Fig. 5, having an inlet opening 16 for the supply of ice-cream thereto and two outlets 17. A member 20 for dividing the incoming ice-cream into two streams comprises a flat circular disc which may be moved across the opening, to regulate the distribution of icecream to the outlets, by turning a wing nut 22 on a screw-threaded rod 21 fixed to the disc. The two outlets may each deliver a stream of ice-cream onto conveyer plates 12, but as shown they feed into secondary chambers 23 each having two outlets 24 and each having a. control member 20 as in chamber 15. The chambers 15, 24 have end caps 18 held in place by springs 19. The four streams of ice-cream issuing from outlets 24 are cut into portions 54 by a cutter in the form of a tube 46, Fig. 1, through which hot water is passed, the cutter being reciprocated vertically by a cam 44 through the intermediary of a bar 45 (fulcrummed at 9, Fig. 3), crossbar 47 and links 6. The cam 44 is fixed on a shaft 39 carrying chain wheels 40 around which pass chains 11 which carry the conveyer plates 12. The chambers 15 and 24 and their appurtenances are carried by a frame 25 supported at its ends in slots in a pair of levers 27 pivoted at 27a, and the frame 25 is reciprocated lengthwise of the conveyer to separate the extruding streams from the cut portions. The frame is reciprocated by a cam 38 acting through rod 35 and crossbar 34, and the shape of this cam is such as to produce a gradual advance of the frame towards the cutting position and then, after cutting, a sharp retraction. In a modified arrangement (not illustrated) only two streams of ice-cream are extruded and the cut portions 54 lie with their length across the conveyer plates. Into such crosswise-lying por- . tions may be inserted sticks 57 fed by a slide 58 moved by a cam 61.
Patent GB-490578-A (GB)
Title: Improvements relating to artificial teeth
IPC: A61C13/10
Filed: 1937-11-08
Abstract: 490,578. Artificial teeth. WERKENTHIN, A. Nov. 8, 1937, Nos. 30606 and 30607. Convention dates, Nov. 19, 1936 and Sept. 25, 1937. [Class 81 (ii)] A porcelain artificial tooth is united to a tooth-carrier (which may be made of metal or non-metal, e.g. rubber) by means of a connecting member which comprises a hard metal block which is embedded in the carrier without any free space being left and having the form of a flat prism projecting perpendicularly from the rear of the tooth to a height approximately equal to ordinary anchoring pins and having an end face parallel to the rear side of the tooth. For metal work, the tooth may be provided with anchoring pins 2 and the block is formed by recessed parts 3 which fit round the pins and are secured by a wedge 6, which may be made from amalgam, (Fig. 1) or by two parts 8 recessed to surround the pins (Fig. 2) and secured by a screw 9. The projecting parts of the pins are removed. Preferably the block is cemented into an enclosing body, which in turn is fitted into the recess in the tooth-carrier. Such enclosing body, made of platinum, platinum-gold, platinum-silver or cadmium, may be a hollow body of rectangular shape open at one surface, or may be made from U -section bar, when the end faces will be open or as shown in Fig. 7, of three sections, the middle section 14 being of varying width as desired. In Fig. 10, the metal block 3<1> is integral with the anchoring 2 embedded in the tooth 1. For use in rubber work, the block 3<1> is provided with a dovetail recess 20, Fig. 11, which is filled with a complementary body 21 when used in crown or bridge work. Fig. 12 shows a modification in which the keying recesses 22 are in the ends of the block. For metal work, these recesses are filled by wire 23. Alternatively, the block may be perforated, and secured in rubber work by means of a wire hook. Suitable materials for making the block &c. comprise gold, palladium-silver, nickelin or a special brass containing iron, manganese or lead.
Patent GB-165009-A (GB)
Title: Improvements in toasters
IPC: A47J37/08
Filed: 1920-10-29
Abstract: 165,009. Collier, F. W. Oct. 29, 1920. Grilling and toasting apparatus. - A gas or electrically heated toasting-appliance comprises one or more slices-holders D mounted on cranked bars H, G and I, J, which are pivoted so that the slice-holders may be reversed to present either side to the heating-element F. The upper and lower plates C, A of the toaster are spaced by uprights B and are provided with bearing-holes C<1>, A<1> for the cranked bars H, G and I, J, the horizontal portions of which are suitably bent, and if necessary arranged to work in different planes, to obviate fouling of the crank bars during operation. The slice holders are pivotally mounted on the vertical portion of the bars H, G and I, J, and are secured thereto at opposite points 0, P so that the holders may be reversed by means of handles X, Y, the bread being inserted when in the neutral position shown in Fig. 3. The distance between the points M, N must be greater than that between the points 0, P, to permit movement of the holder through one-half of a revolution, and the crank-bars are attached to the end of the holder remote from the handles X, Y to ensure sufficient clearance between the edges of the holders and the heating-faces F<1>.
Patent GB-1058369-A (GB)
Title: Operating member for a stopper for closing vacuum flasks and similar containers
IPC: A47J41/00
Filed: 1965-07-19
Abstract: 1,058,369. Container closures. TERMOVERKEN A.B. July 19, 1965 [July 24, 1964], No. 30660/65. Heading B8T A vacuum flask stopper 5 is attached to one end of an arm 10 by a screw 7, and includes a sealing ring 6 and several holes 21 allowing inflow of air to prevent a vacuum forming within the flask. The arm is pivoted at 9 to a handle 1 and is raised or lowered and held in either position by a member 12 pivoted about a bearing 11 and having an operating arm 32. By turning the member clockwise from the position of Fig. 2 a projection 14 on the member engages a projection 17 on the arm to lift the stopper from the flask; to apply the stopper, the member is turned anticlockwise and a projection 13 thereon engages a projection 15 on the stopper arm, and the stopper arm is locked in position. After partially removing the stopper its arm 10 can be fully retracted to bring a curved area of its pivoted end into engagement with a recess 18 in the member.
Patent GB-1468669-A (GB)
Title: Process for the production of polybutadiene
IPC: C08F236/00
Filed: 1973-06-28
Abstract: 1468669 Anionic polymerization of butadiene I S R HOLDING Sarl 28 June 1974 [28 June 1973] 30817/73 Heading C3P Polybutadienes having a vinyl content above 30% are obtained by polymerizing a hydrocarbon stream comprising butadiene-1,3, and which is the C 4  product stream from a naphtha cracker or from a dehydrogenation reaction, in the presence of a catalyst comprising (a) an organolithium and (b) a polar modifier, in appropriate amounts to obtain the required stereostructure, which is an ether, amine, phosphine or phosphoramide, and in the absence of acetylenes. The stream may also include a multivinyl benzene. In the Example a stream comprising butadiene- 1,3, butene-1, propylene, other butanes and butenes and butadiene-1,2 is subjected to purification and then polymerized using n-butyl lithium and diethylene glycol dimethyl ether.
Patent GB-509667-A (GB)
Title: Improvements in or relating to dentures or parts thereof
IPC: A61C13/00
Filed: 1938-10-25
Abstract: 509,667. Dentures. HESSELS, D. Oct. 25, 1938, No. 30858. Convention date, Oct. 25, 1937. Drawings to Specification. [Class 81 (ii)] In dentures or parts thereof made of synthetic material, the tooth-receiving part or the part or parts adjacent to the teeth is or are opaque and of suitable colour, for instance white, pink or flesh colour, and the remaining part is transparent and preferably colourless, although it may be of rose, pink or flesh colour. The synthetic material may be a polymerized product of methacrylic and/or acrylic acid together with, if desired, plasticizers, hardening agents, fillers and colouring substances, products known under the Registered Trade Marks " Plexigum," " Plexigum M " and " Plexiglass " being specified. So much filler is added to the material forming the tooth-receiving parts that it is not transparent. The invention is applicable to an entire artificial set of teeth or to a part thereof containing or adapted to contain one or more teeth.
Patent GB-1169308-A (GB)
Title: Improvements in or relating to Furniture Drawers
Inventor: FIRDMANN JACQUES
IPC: A47B88/16
Filed: 1968-06-28
Abstract: 1,169,308. Sliding drawers. E T A B S . ALLIBERT. 28 June, 1968 [30 June, 1967], No. 30866/68. Heading A4B. A drawer 2 is guided by a pair of parallel ribs 5 extending from front to rear of the drawer centrally beneath its bottom, the ribs 5 straddling a pair of ribs 7 upstanding from the bottom of the drawing housing 3 and parallel to laterally disposed ribs 9 on which the drawer 2 rests, and inadvertent removal of the drawer is prevented by engagement of stop plates 6 and the rear ends of the drawer ribs 5 with lugs 8 upstanding from the bottom of the housing. To completely remove the drawer the housing bottom is flexed downwardly so that the stops 6 may pass over the lugs 8. The forward edges of the lugs 8 incline downwardly and forwardly.
Patent GB-783481-A (GB)
Title: Impregnated shaped bodies of graphite or carbon and a process for their manufacture
Inventor: KAUFMANN WALDEMAR
IPC: C04B41/83
Filed: 1955-10-28
Abstract: A porous carbon or graphite article is rendered impervious by impregnating with a thermosetting synthetic resin, hardening at least the surface of the resin by treatment with a catalyst optionally together with a limited heat treatment, removing the catalyst, and completing the hardening process by heat treatment, e.g. at 90-160 DEG  C.  The purpose of the partial hardening treatment is to prevent exudation of resin during the final heat hardening treatment.  The final heat hardening treatment may be carried out immediately or after some time after the removal of the catalyst.  Resins specified are phenol-formaldehyde, cresol-formaldehyde, urea-formaldehyde and phenol-furfurylaldehyde resin.  Catalysts specified are aqueous or alcoholic solutions of sulphuric, hydrochloric, phosphoric and naphthelene sulphonic acid.  A wetting agent, e.g. an alkali metal or amino salt of a fatty acid, of a ligninsulphonic acid, or of a dialkyl sulphosuccinic acid mono ester, or a water-soluble hydroxyethylated alkylphenol may be present with the catalyst.ALSO:A porous carbon or graphite article is rendered impervious by impregnating with a thermosetting synthetic resin, hardening at least the surface of the resin by treatment with a catalyst optionally together with a limited heat treatment, removing the catalyst, and completing the hardening process by heat treatment, e.g. at 90-100 DEG  C.  The purpose of the partial hardening treatment is to prevent exudation of resin during the final heat hardening treatment.  The final heat hardening treatment may be carried out immediately or some time after the removal of the catalyst.  Resins specified are phenol-formaldehyde, cresol-formaldehyde, urea - formaldehyde and phenol - furfurylaldehyde resin.  Catalysts specified are aqueous or alcoholic solutions of sulphuric, hydrochloric, phosphoric and napthalene sulphonic acid.  A wetting agent, e.g. an alkali metal or amino salt of a fatty acid, of a lignin-sulphonic acid, or of a dialkyl sulphosuccinic acid mono-ester, or a water-soluble hydroxyethylated alkylphenol may be present with the catalyst.