baber/WOPTO huggingface dataset:
Patent GB-887987-A (GB)
Title: A wax composition
IPC: D21H19/18
Filed: 1960-11-17
Abstract: Wax compositions comprise a major proportion of a petroleum wax having a melting point of 50 DEG  to 65 DEG C. and a minor proportion made up from two types of polyalkene, one having a relative density of 0,860 to 0,910 at 20 DEG  C. and the other a relative density of 0,915 to 0,990 at 20 DEG  C.  The wax preferably comprises 40 to 60% by weight of a distillate paraffin wax having a melting point of 50 DEG  to 60 DEG C., 5 to 20% of a heavy distillate paraffin wax having a melting point of 60 DEG  to 80 DEG C., 10 to 20% of a residual microcrystalline wax and 25 to 40% of an isoparaffinicnaphthenic plastic distillate wax having a melting point of 40 DEG  to 45 DEG C. The polyalkenes may be polyethylenes or polypropylenes.  The compositions may be used for coating paper board cartons for dairy products.ALSO:Compositions comprise a major proportion of a petroleum wax having a melting point of 50 DEG  to 65 DEG C. and a minor proportion made up from two types of polyalkene, one having a relative density of 0,860 to 0,910 at 20 DEG C. and the other a relative density of 0,915 to 0,990 at 20 DEG C.  The polyalkenes may be polyethylene and polypropylene, and preferably have average molecular weights in the range 1,000 to 12,000.  The compositions may be used for coating dairy food cartons.
Patent GB-1044208-A (GB)
Title: A compensated constant pressure apparatus for the study of reactions involving the absorption or evolution of gases
IPC: G01N7/00
Filed: 1964-09-29
Abstract: 1,044,208. Constant pressure gas study apparatus. R. SCOTT. Sept. 29, 1964, No. 39520/64. Heading B1X. In an apparatus which compensates for the change in volume of a gas in one or more reaction flasks, and can be used to measure these changes at a constant pressure, signalling means are actuated by pressure sensitive units in communication with each flask at a predetermined pressure in any selected flask. In Fig. 2, the signalling means comprises an electrical circuit including a contact 15, a contact on pressure sensitive diaphragm 11 and a light bulb, as comprises a capacitor between bridge piece 14 and diaphragm 11. Volume compensating bellows 6 are operated by rotatable threaded shaft 3 received in tapped end-member 2, and each bellows communicates via pipes 8 with one side of a diaphragm 11 and via ports 13 with reaction flasks. Fig. 1 (not shown) incorporates only one of bellows 6, which is operated by a cam 21 acting on an unthreaded shaft 3. In both Figs. 1 and 2, bellows 4 is open to the atmosphere via ports 22, and is equal in cross-sectional area to the total cross-sectional area of bellows 6 so that the pressure in manifold 1 is not affected by operation of the bellows. To compensate for and/or measure the change in volume of gas in a particular reaction flask, bellows 5 are operated until the electrical contacts touch to provide an electrical signal, at which point operation of bellows is discontinued. The means operating the bellows is calibrated for measurement of change of volume. The shaft 3 may be driven by an electric motor (26, Figs. 3 and 4 not shown) controlled by microswitches (29) which are actuated by a disc (28) on shaft 3 at extreme positions of shaft 3, which positions may also be reference positions. The electronic system described in Specification 973,954 (see Division G4) may be incorporated into the apparatus to provide digital recording of the traverse of the motor and serial selection of diaphragms, where fixed reference positions on shaft 3 replace the reference thermo-barometer selection. Thermostatic control may be effected of the reaction flasks and manifold.
Patent GB-1396958-A (GB)
Title: Adjustable pulles
IPC: D06F37/36
Filed: 1972-08-24
Abstract: 1396958 Expanding pulley gears SIEMENS AG 24 Aug 1972 [25 Aug 1971] 39571/72 Heading F2D An adjustable pulley for a washing machine drive consists of a rotary member 2 and a pulley side 1 fixed axially to a sleeve 7, and a second pulley side 3 axially movable on the sleeve 7 which is adapted to be secured to a drive shaft 8. The rotary member 2 and the pulley side 3 are formed to provide cages for centrifugal balls 6. The pulley side 1 is welded to the sleeve 7 and is formed with a hub portion 12 which projects into the sleeve and is splined to the shaft 8. A frusto-conical seat 15 on the sleeve is held against a corresponding shoulder on the drive shaft 8 by means of a nut 16.
Patent GB-1482625-A (GB)
Title: Treatment of aqueous material having a biochemical oxygen demand
IPC: C02F3/26
Filed: 1973-08-15
Abstract: 1482625 Temperature controlled aeration process BOC INTERNATIONAL Ltd 15 Aug 1974 [15 Aug 1973] 39580/73 Heading C1C Aqueous material having a BOD, may be treated by a process which includes the steps of passing the material (e.g. sewage) into a treatment vessel, aerating or oxygenating, and controlling the temperature of the aqueous material in the vessel so as to keep it at or close to a chosen temperature, wherein incoming aqueous material is heat exchanged with a stream of aqueous material from the treatment tank. Temperatures of 25‹ to 50‹ C. may be used, and heat exchangers may provide additional heating or cooling. The activated sludge process may thus be controlled in this way. The use of substantially pure oxygen is preferred. Apparatus is also described and claimed.
Patent GB-1274274-A (GB)
Title: A protective sound insulation device for insertion in the auditory canal of a humar ear
Inventor: HEINRICH RICHARD
IPC: A61F11/08
Filed: 1969-08-08
Abstract: 1,274,274. Ear plugs. R. HEINRICH. 8 Aug., 1969 [10 Aug., 1968; 10 June, 1969], No. 39680/69. Heading A5R. A protective device for insertion into the auditory canal of the human ear comprises an outer cover 10 of elastic material such as rubber consisting of an approximately hemispherical end portion 12 and a generally cylindrical body 13 with at least one holding rib 14 projecting from its peripheral surface, the distance between the rib 14 and the portion 12 being approximately twice as large as the external diameter at the mid-point of the portion between the head and the rib 14. Three such holding ribs 14-16 are advantageously provided, axially spaced and symmetrical about the longitudinal axis of the device. Each rib is wedge shaped in cross-section with its apex furthest from the head 12. Portion 18 of body 13 is slightly tapered and then flared outwards from a foot 20, the external diameter of which is greater than that of the holding ribs. The internal space is filled with porous material 11 of foamed plastics or felt, the filling being either integral or in discrete discs with air spaces therebetween. The cover 10 is preferably of a shore hardness of 50, portion 13 is preferably of a thickness less than 0.6 mm. and head 12, less than 0.4 mm. A modification as in Fig. 3 (not shown) comprises an aperture (22) in head 12 and passage (24) in filling 11, in communication with said aperture to allow the escape of compressed air.
Patent GB-1091328-A (GB)
Title: Improvements in means for securing mounting blocks in channel members for supporting cleats,brackets and the like
IPC: F16B37/04
Filed: 1965-09-17
Abstract: 1,091,328. Anchor nuts. S. F. CHAPLIN. July 1, 1966 [Sept. 17, 1965], No. 39751/65. Heading F2H. An anchor nut 11, adapted to be mounted in a channel member 14, has a major dimension approximately equal to the width between the flanges 14a and a minor dimension less than the space between the flanges, so that it can be fitted by insertion and rotation through 90 degrees, and a toe 17 which with the nut equals the dimension between the underside of a lip 13 and the base of the channel. After insertion the nut is tipped to cause the toe to join the nut in the channel. The nut is made from aluminium.
Patent GB-1221807-A (GB)
Title: Electric terminal clips
Inventor: RYDER FRANCIS EUGENE
IPC: H01R4/34
Filed: 1968-04-01
Abstract: 1,221,807. Clips; stud and socket fastenings. ILLINOIS TOOL WORKS Inc. 1 April, 1968 [31 March, 1967], No. 39769/70. Divided out of 1,221,806. Heading E2B. [Also in Division H2] A sheet, metal terminal clip is substanstially as described in the Specification of Specification 1,221,806 but the claims are different.
Patent GB-1357353-A (GB)
Title: Detection circuit useful in muting circuits
IPC: H03G3/34
Filed: 1971-08-25
Abstract: 1357353 Detectors; muting RCA CORPORATION 25 Aug 1971 [26 Aug 1970] 39834/71 Heading H3T A detector circuit comprises a first rectifying semi-conductor junction, i.e. the base-emitter path of transistor 212, having a first electrode, i.e. the base, adapted for coupling to a source of input signals, a first by-pass capacitance 218 and a resistive load connected to a second electrode, i.e. the emitter, of the first semi-conductor rectifying junction; characterized by a first transistor 220 connected in grounded emitter configuration, the resistive load being primarily provided by the base-to-emitter path of the first transistor, the first semi-conductor rectifying junction and the base-to-emitter path being arranged for simultaneous easy conduction of current through their series connection with each other. In the embodiment, which comprises a muting circuit for a frequency modulation receiver, the base of transistor 212 is connected via capacitor 210, and the collector directly, to the discriminator circuit. The transistor 220 is followed by a further D.C. amplifier 226. The arrangement comprises an integrated circuit, the output from transistor 226 being smoothed by a capacitor 202 external to the chip and the muting control voltage being taken from potentiometer 204 via switch 206. Muting occurs when the signal level is so low that noise produces "holes" in the signal (Figs. 3-5, not shown).
Patent GB-1119934-A (GB)
Title: Coated abrasives
IPC: B23H5/08
Filed: 1965-09-17
Abstract: A coated abrasive material for electrolytic grinding comprises a woven backing material, e.g. cotton, of which at least the front surface is electrically non-conductive, a plurality of electrically non-conductive abrasive grains adhesively bonded to the said front surface and an electrically conductive layer of material overlying the said front surface and bonded thereto, the abrasive grains protruding through and above the electrically conductive layer at least when the abrasive material is used.  The adhesive may be a phenolic resin or a blend of epoxy ester and polyamide resin.  The conductive layer may be a laminated foil or a metal coating applied as by metal spray, vacuum metallizing or electroplating.  The metal may be aluminium, copper, tin or lead. The abrasive grains may be permitted to protrude by mechanical abrasion or by deplating by electrolytic means.  A plurality of perforations may extend through the backing and the electrically conductive layer.  The material may be in the form of a belt or disc.  The belt may have the abrasive particles only along a strip centred along the median line and have uncoated margins on the band the electrically conductive layer comprising the strip of abrasive grains and the uncoated margin.ALSO:A coated abrasive material for electrolytic grinding comprises a woven backing material, e.g. cotton, of which at least the front surface is electrically non-conductive, a plurality of electrically non-conductive abrasive grains adhesively bonded to the said front surface and an electrically conductive layer of material overlying the said front surface and bonded thereto, the abrasive grains protruding through and above the electrically conductive layer at least when the abrasive material is used.  The adhesive may be a phenolic resin or a blend of epoxy ester and polyamide resin. The conductive layer may be a laminated foil or a metal coating applied as by metal spray, vacuum metallizing or electro-plating.  The metal may be aluminium, copper, tin, or lead.  The abrasive grains may be permitted to protrude by mechanical abrasion or by deplating by electrolytic means, e.g. with NaCl electrolytic for copper.  A plurality of perforations may extend through the backing and the electrically conductive layer.  The material may be in the form of a belt or disc. The belt may have the abrasive particles only along a strip centred along the median line and have uncoated margins on the band the electrically conductive layer comprising the strip of abrasive grains and the uncoated margin.  Reference is made to the use of non-woven non-conductive backings, e.g. polyethylene terephthalate or a phenolic tube.
Patent GB-1086828-A (GB)
Title: Gas washing bottle
IPC: B01D47/02
Filed: 1965-09-17
Abstract: 1,086,828. Gas-washing bottle. CIBA Ltd. Sept. 17, 1965 [Sept. 18, 1964; July 27, 1965], No. 39851/65. Heading B1R. A gas-washing bottle has a gas inlet 5 to a chamber 6 which opens at its base into liquid contained in a chamber 2 communicating at 0 with a third chamber 11 with a gas outlet 9, the whole being such hat any liquid carried over or sucked back rom the chamber 2 an be accommodated in chambers 11 and 6 espectively. The chamber 2 has disposed herein a pressure qualising tube 12, the tube 12 communicating with a suitable atmophere via a labyrinth indicated generally at 4 and a tube 22. Alternatively the labyrinth may be connected (Fig. 3, not shown) to a ounter-pressure valve with a bursting plate. n a modification the hamber 2 may have a mid-section which is narrower than the upper and lower portions thereof.
Patent GB-981579-A (GB)
Title: Novel alkaloids and process for preparing same
IPC: C07G5/00
Filed: 1962-10-25
Abstract: The invention comprises the alkaloids leurocristine and leurosidine, their acid addition and quaternary ammonium salts, and their preparation by contacting plant material of the family Apocynaceae, for example Vinca rosea, with an aqueous acid and a water-immiscible organic solvent, separating the organic layer, extracting it with aqueous acid, making the extract alkaline, extracting it with a water-immiscible solvent, separating the alkolids therefrom by chromatography, obtaining the fraction containing leurocristric and/or leurosidine by preferential elution, evaporating this fraction to dryness, and recovering the desired alkaloid therefrom by crystallization either in the form of a free base or as an acid addition salt.  Subsequent quaternization is effected by standard methods.  Catharanthine, vindoline, ajalicine, vindolinine dihydrochloride, vincaleukoblastine sulphate and virosine are obtained as by-products from the chromatographic separation.  The alkaloids and salts of the invention are employed in the treatment of malignancies and may be used in combination with physiologically compatible extending medium in form suitable for oral or parenteral administration.
Patent GB-1396246-A (GB)
Title: Back sealing for lift valves
IPC: F16K41/18
Filed: 1973-08-28
Abstract: 1396246 Valves STAL REFRIGERATION AB 28 Aug 1973 [15 Sept 1972] 40482/73 Heading F2V In a lift valve comprising a body 1, cover 4, packing box 7 and spindle 6 carrying a closure member 5, a ring seal 8 of truncated wedgeshaped cross-section is provided around the spindle and arranged to seal against bevelled surfaces 9, 10 on the cover and closure member, respectively, when the closure member is in the fully open position. The angle of the wedge is greater than the angle between the two bevelled surfaces so that the seal ring is also forced into sealing contact with the spindle. The sealing by the ring 8 allows the packing box to be removed for repair.
Patent GB-1025502-A (GB)
Title: Valve assemblies
IPC: F23Q2/52
Filed: 1963-10-15
Abstract: 1,025,502. Lighters using liquefied gas. JACQUES KREISLER MANUFACTURING CORPORATION. Oct. 15, 1963 [Nov. 14, 1962], No. 40605/63. Heading F4F. [Also in Division F2] A valve for refilling a lighter with liquefied gas comprises an 0-ring 72 forming a seat for a valve member 80 and forming a further seat for an adaptor 82 extending from a refilling tank 92. The end of the adaptor 82 is passed through the O-ring to push the valve member 80 off its seat against the action of a spring 78; and a shoulder 110 on the adaptor finally seats on the 0-ring. In an intermediate position of the adaptor 82 gas in the lighter can escape through the partially opened valve and past the adaptor to atmosphere. The adaptor is carried on an outlet tube 88 having a head 94 urged by a spring 98 against a resilient seat 96 to prevent the escape of gas from the refilling tank, but pressure on the refilling tank after the adaptor has seated on the 0-ring moves the head away from the gasket and gas flows into the outlet tube 88 through holes 104 therein. The filling valve may be mounted in an aperture in the bottom or side of the lighter. The head of the lighter comprises a thumbpiece which is pressed to open a snuffer, rotate a spark wheel and pivot a lever to open a valve controlling the gas flow to the burner of the lighter.
Patent GB-1133528-A (GB)
Title: Improvements in or relating to circuit arrangements for producing sawtooth currents
IPC: H03K4/48
Filed: 1966-09-14
Abstract: 1,133,528. Transistor sawtooth circuits. PHILIPS ELECTRONIC & ASSOCIATED INDUSTRIES Ltd. 14 Sept., 1966 [17 Sept., 1965], No. 41103/66. Heading H3T. A line output stage (particularly for television equipment) utilizes the base-collector diode of an asymmetrical transistor as a damping diode, the duration of the pulses of the switching signal which cut off the transistor is arranged to be longer than that of the flyback. As shown, driver transistor T1 is made conductive during the flyback time so that the output transistor T2 becomes non-conductive, allowing the energy in the deflection coils Ly to be transferred sinusoidally to capacitor Cy. This action is terminated by the base-collector diode of T2 when the collector becomes negative, so that a further current sweep is initiated in coils Ly. At the end of the pulse from T1, T2 again becomes conductive so that the current in deflection coils Ly continues via the collectoremitter path. The circuit is arranged to be balanced so as to minimize radiation from long leads feeding coils Ly. An E.H.T. winding 16 and rectifier D2 are provided. Power is obtained directly from the supply mains via rectifier D1 and a fuse Z. In Fig. 10 (not shown) a symmetrical transistor is used at T1, the emitter of T2 being earthed. The collector supply of T1 is obtained partly via a resistance/capacitance circuit from the mains supply and partly by rectification of flyback pulses from transformer 10. Supply for other transistors may be obtained by rectification of flyback pulses if T1 is arranged to be self-oscillatory under switching- on conditions. In Figs. 1, 4 (not shown), Cy is connected across Ly. Transformer 1 may be replaced by an inductor.
Patent GB-936141-A (GB)
Title: Improvements in and relating to contact systems for electrical switchgear
Inventor: BRUCE JAMES WILLIAM
IPC: H02B13/02
Filed: 1958-12-19
Abstract: 936,141. Oil-break switches; switch contacts. ENGLISH ELECTRIC CO. Ltd. Dec. 9, 1959 [Dec. 19, 1958], No. 41104/58. Class 38 (5). Each phase of an oil switch comprises a fixed conductor 12 bifurcated to allow a blade 11 pivoted at 13 on an insulator 16 to swing between positions in which its contact fingers 11a engage contact blocks 10a<SP>I</SP>, 10b<SP>1</SP> connected respectively to line supply and earth terminals 20, 24 by conductors 10a, 10b, the conductor 12 being connected to the supplied circuit 22 and a test terminal 21. The movement of an operating rod 14 to close the blade 11 on to the block 10a<SP>1</SP> or 10b<SP>1</SP> is assisted in its final stage by the electromagnetic interaction between the currents in members 11, 12, the interaction between members 10a, 11 providing further assistance when closing to block 10a. The switch-open position is obtained with the blade 11 lying just below the conductor 12, or, if the switch is arranged so that the conductor 12 is vertical, with members 11, 12 in line. The blade 11 is similar to that of Specification 936,142.
Patent GB-1013160-A (GB)
Title: Improvements in or relating to two-channel audio frequency amplifying systems
IPC: H03G5/04
Filed: 1962-10-31
Abstract: 1,013,160. Binaural circuits; reverberation systems. PHILIPS ELECTRONIC & ASSOCIATED INDUSTRIES Ltd. Oct. 31, 1962 [Nov. 3, 1961], No. 41192/62. Heading H4R. A two-channel audio-frequency amplifying system for handling either a single monaural signal or two separate but related signals forming for example a stereophonic pair comprises a signal modification circuit (e.g. for producing a reverberation effect) for connection between the output of the amplifier of the first channel and the input of the amplifier of the second channel. A balance control is provided having a pair of ganged gain control potentiometers, one in each of the channels, together with a switch for connecting the signal modification circuit and rendering the potentiometer in the first channel inoperative when a monaural signal is being handled. Two audio-frequency channels (Fig. 2) each include an amplifier 1, 2. Ganged switches 20, 21, 22, 23, 24, 25 in position s permit separate amplification of two stereophonically related signals. In position n a reverberation device 5 is connected between the output of amplifier 1 and the input of amplifier 2. The input signal, which may be applied from either or both of terminals L, R, is then reproduced from loudspeaker 3 without reverberation and from loudspeaker 4 with reverberation. For stereophonic reproduction operative components include a ganged balance control 10, 11, a ganged volume control 12, 13, frequency dependent negative feedback loops 16, 17 and ganged tone controls (not shown). When producing monaural sound with added reverberation, balance control potentiometer 10, volume control potentiometer 13 and negative feedback loop 17 are inoperative, while volume control potentiometer 12 functions as an overall volume control and balance control, potentiometer 11 is adjustable to control the proportion of reverberant sound. Also a tone correction filter is interrupted by switch 25. The reverberation device 5 is fed through a matching impedance 18 and supplies a single transistor amplifier 6.