baber/WOPTO huggingface dataset:
Patent GB-756546-A (GB)
Title: Improvements in and relating to transducers
IPC: H04R23/00
Filed: 1952-04-30
Abstract: 756,546. Microphones and loud-speakers. KLEIN, S. April 30, 1952 [May 12, 1951], No. 10884/52. Class 40 (4). [Also in Group XL (a)] A transducer which may be used either as a loud-speaker or as a microphone comprises a discharge electrode for producing positive ions in the throat of a horn and a control electrode coaxial with the horn. The positive ions are produced by a corona discharge accompanied by thermionic emission or by thermionic emission alone. When the transducer is used as a loudspeaker, the ions are controlled by the field between the electrodes. When the transducer is used as a microphone, the sound modulates a radio frequency current between the electrode. Corona discharge. A horn 24, Fig. 1, of fused quartz with a re-entrant flared extension (not shown) is provided with a vacuum jacket 28 and a platinum electrode 22 only the tip 23 of which is exposed in the throat of the horn. Glass wool fills the space between the horn and a control electrode 30. An oscillator comprising two tetrodes 51, Fig. 3, provides oscillations at 27 mc/s. The power supply 45 provides 400 v. anode potential and the oscillations fed to the electrode 22 through the transformer 42 have an amplitude of about 20,000 v. The output of the oscillator is anode modulated by audio-frequency from an amplifier 46 and a transformer 54. The corona discharge produced by the high voltage heats the electrode tip 23, Fig. 1, and causes thermionic emission. The electrode tip 23a may be exposed only in a small recess behind a constriction 26a, Fig. 5, and then gives best results at about 400 kc/s. In a modification, the electrode tip and the surrounding walls are coated with an emissive coating described in Specification 657,032, [Group XL (a)]. When transmitting ultrasonic vibrations into water, the horn is closed by a rubber plug 86, Fig. 7, which is of low density on one side and is of density approaching that of water at the side in contact therewith. The entrapped air is under pressure. A loud-speaker with a cylindrical horn may provide both ultra-sonic vibrations and ultra-violet radiation. Thermionic emission. A refractory material 61, Fig. 6, is coated with emissive material to form a discharge electrode 64 heated by a platinum filament. The control electrode 63 is in the form of a foraminous screen. A D.C. supply of 400 v. is connected between the electrodes and the audio-frequency modulations are applied through a transformer 65.
Patent GB-1491639-A (GB)
Title: Derivative of beta-peltatin-a
IPC: C07H17/04
Filed: 1976-03-18
Abstract: 1491639 #-Peltatin-A derivative AKADEMIE DER WISSENSCHAFTEN DER DDR 18 March 1976 [14 April 1975] 10909/76 Heading C2C The novel compound, #-peltatin-A O-α-L- arabinofuranoside, having the Formula I is prepared by reacting #-peltatin-A with a tri-O-acyl-α-L-arabinofuranosyl halide in freshly distilled, anhydrous acetonitrile, with the addition of dry mercuric cyanide, and stirred for about 60 hours at 15‹ to 25‹ C. to give a #-peltatin-A O-α-L-arabinofuranoside triacylate, which is then deacylated. The deacylation is effected by heating under reflux for 15 to 35 hours in a mixture of 5 parts of anhydrous methanol with 1 part of an inert solvent, with the addition of an anhydrous zinc salt. The novel compound is used as a transport form of the cytostatic compound #-peltatin-A.
Patent GB-559950-A (GB)
Title: Improvements in or relating to optical objectives
IPC: G02B17/08
Filed: 1942-08-05
Abstract: 559,950. Optical objectives. TAYLOR, TAYLOR & HOBSON, Ltd., and WARMISHAM, A. Aug. 5, 1942, No. 10922. Addition to 548,384. [Class 97 (i)] The two holosymmetrically-arranged parts of a reflecting objective according to the parent Specification are so disposed that a principal focus of each lies at the stop position with respect to which the parts are corrected. As shown, the objective comprises spherical metallized reflecting surfaces R<SP>1</SP>, R<SP>2</SP>, R<SP>5</SP>, Re, all of equal radius and symmetrically arranged with respect to a point A3. The focal plane of each part, and the focal surface R<SP>3</SP> of a correcting plate, pass through the point A3. The correcting plate may consist of dense barium crown glass or of a material according to Specification 548,729 and transparent over a spectral range extending well beyond the visible spectrum. Each pair of reflecting surfaces may be internally-reflecting surfaces of a piece of glass, fused silica &c ; some or all of the reflecting surfaces may be spheroidal. Complete data for one example are set out.
Patent GB-466630-A (GB)
Title: Improvements in or relating to reciprocating pumps
IPC: F04B49/12
Filed: 1936-04-16
Abstract: 466,630. Reciprocating pumps. LOGUE, L. H. April 16, 1936, No. 10945. [Class 102 (i)] An eccentric 30 is connected by a rod 33 to a crosshead 34 comprising two parts 40, 41 shaped so that they are guided by rods 35. The crosshead is moved on the rods 35 by means of a screwed spindle 44 and may be clamped in its adjusted position by a screw 45. The rods 35 are carried by a frame 38 pivoted at 39 and connected to the rod 22 which carries a diaphragm 18 provided with a valve 25. Suction takes place through the valve 12 and liquid is delivered over the lip 21. The suction in the pump chamber is adjusted by varying the amount of air admitted through the pipe 15.
Patent GB-646920-A (GB)
Title: Improvements in or relating to a noise reduction system for radio receivers
IPC: H03G11/04
Filed: 1947-04-24
Abstract: 646,920. Radio receiving apparatus. COLONIAL RADIO CORPORATION. April 24, 1947, No. 10963. Convention date, June 29, 1944. [Class 40 (v)] A noise reduction circuit for an amplitude-modulation receiver comprises a first condenser 24 connected through a first electron tube 20 to the signal demodulator 12, and through second electron tube 29 to a second condenser 27 which is changed to a value related to the peak amplitude of the modulation envelope, and means for rendering both electron tubes non-conductive during noise impulses exceeding the 100 per cent modulation level, to isolate the audio output circuit. The arrangement reduces the effect of large noise impulses to a value below that of the 100 per cent modulation level. In Fig. 1, the carrier or intermediate frequency is supplied from transformer 10 to signal demodulator 12, the output from which is supplied via potentiometer 13, 14, diode 20 and volume control 23, to the audio frequency stages of the receiver. In the absence of noise, diode 20 conducts since the potential at B, which is supplied to the cathode of diode 20 via diode 29, is more negative than that of point A. Point C is stabilized at a negative potential by condenser 27, and in the event of a noise impulse which drives point B, and to a lesser extent point A, still more negative, diode 20 is rendered non-conducting. Noise impulses in the audio output are thus limited to a finite value, which by adjustment of the ratio of resistances 13 and 14, may be made equal to the hundred per cent modulation level. In order to reduce the interference effect still further, an additional diode 26 is provided, which is normally biassed to be non-conducting, since the anode is connected to point C. The incoming high-frequency energy is applied to the cathode of diode 26 via a capacity potentiometer 16, 17. In the event of a steep noise impulse of excessive amplitude, diode 26 conducts and produces a positive impulse which is supplied via condenser 28 to the cathode of diode 29, thus cutting off diode 29 and thereby preventing the noise impulse in the audio output circuit from reaching the hundred per cent modulation level. The Specification specifies suitable values for the resistors and condensers.
Patent GB-358862-A (GB)
Title: Improvements in or relating to intermediate frequency transformers for wireless reception
IPC: H03H7/01
Filed: 1931-04-14
Abstract: 358,862. Transformers ; condensers. LONDON ELECTRIC WIRE CO. & SMITHS, Ltd. and BOYD, W. F., 7, Playhouse Yard, Golden Lane, London. April 14, 1931, No. 11062. Grant of Patent opposed. [Class 38 (ii).] An intermediate frequency transformer for use in wireless receivers comprises primary and secondary windings 14, 15 wound on a slotted former 13 either or each of the windings having connected across it a condenser 16, 17 formed by winding a pair of insulated conductors in slots in the same former. The capacity of the condensers so formed is adjusted by adjusting the length of the conductors to tune the oscillatory circuits formed by the transformer windings and condensers to the required intermediate frequency. Connections are brought out by stiff wires passing through the centre of the former to terminal pins mounted on the base to which the former is secured and to a flexible lead 23 for connecting the plate of the input valve. A metal screen 2 is provided to enclose the whole assembly.
Patent GB-514680-A (GB)
Title: Improvements relating to machines for manufacturing sanitary pads
IPC: A61F13/15
Filed: 1938-04-11
Abstract: 514,680. Making sanitary pads. RAMSEY, A. R. J. (Teall, O. E.) April 11, 1938, No. 11069. [Class 81 (ii)] [Also in Group VIII] The invention relates to machines for making sanitary pads, wherein pieces of absorbent material cut off a roll 20 are turned through a right angle and placed on a continuously moving strip of gauze &c. 54, the sides of the gauze strip are folded over the filler piece, the strip is severed between the pieces, and the ends are folded over. According to the invention the filler piece is turned and conveyed to the gauze strip by a device pivoted on a vertical axis. The filler material is cut by a reciprocating punch 42 of the shape shown in Fig. 7 ; this surrounds a pressure block 57 carried by rods 52 sliding through the cross head 43 and terminating in nuts 53 so that the block descends on to the material just before the punch 42. The conveying means may be a carrier 59 pivoted at 60, which after turning through a right angle lies above a plate 64. A wiper 65 operating through slots in the carrier and plate pushes the filler piece on to the gauze 54. Fig. 7a shows an alternative consisting of a rotating disc 127 carrying the pieces in between guides 130 whence they are pushed forward by fingers 129 mounted on the disc. The gauze is supported on a belt 71 and is drawn forward by driven rollers 77, 79, so recessed and synchronised that they do not compress the filler. pieces. The edges of the gauze are folded over in known manner by wedge plates 70 on which rest weighted rollers 73. The pads d then pass over a drum 90 carrying a blade 89 co-operating with a fixed blade 88 to sever the gauze between the filler pieces. A tray 95 picks up the leading end of the gauze of each pad from the drum 90 then rises to permit the pad to pass under it whereby the end is folded over. The pad is discharged into a tray 101, a creasing blade 107 descends upon the rear end, the tray tilts and discharges the pad between rollers 106, 114, whereby the rear end is folded. The pads fall into an inclined tray 118 up which they are pushed by a reciprocating p'ate 120 and are prevented from returning by friction with the walls.
Patent GB-735032-A (GB)
Title: Improvements in and relating to a pistol intended for inserting bolts into compact material by means of explosive cartridges
IPC: B25C1/10
Filed: 1951-05-11
Abstract: 735,032. Bolt-shooting devices. LEIMGRUBER, H. May 11, 1951 [May 13, 1950; April 12, 1951], No. 11120/51. Class 119. Bolts are inserted into compact material by a pistol comprising a cap 44 reciprocally mounted on the barrel 42, 30, a slide 54 adapted to be driven by the cap, a striker and an extractor 72 carried by the slide, an opening 52 in the barrel for the introduction of a cartridge 11, and means for starting the action of the striker on the cartridge when the control cap is driven downwards. The extractor, which may be resiliently mounted, is arranged in such a way that it brings the cartridge case, after firing, in front of the opening 52 during the return stroke of the cap 44. In the construction shown the barrel bore 34 is stepped at 35 to provide a seating for the cartridge 11, and the bolt 19 is held in place, prior to firing, by two spring-urged semi-cylindrical members 36 mounted in the wall of the barrel part 30. The initial depression of member 44 causes a spring 55 to drive the slide 54 downwards until a spring-controlled piston 60, initially located in a dwell 62 of the barrel part 42, engages in a dwell 63. At the same time a shoulder 65 of a piston 59, arranged as shown with respect to the piston 60, moves to engage a narrow portion 51 of a slot 50 in the part 42. The part 93 of the pistol is then set against the object which is to receive the bolt 19, and the member 44 is given a vigorous push and a turning movement, the latter being necessary to allow a stop 47, Fig. 6, of the member to follow the helical part of a slot 49 in the part 42. In this movement a ramp 45 on the part 44 depresses the piston 59 clear of the slot 50, and the slide 54 is thus released suddenly and under the action of the spring 55 moves downwardly, its striker pin striking the cartridge 11.
Patent GB-708929-A (GB)
Title: Improvements in or relating to dispensing tube closures
IPC: B65D35/42
Filed: 1951-05-11
Abstract: 708,929. Stoppers; collapsible tubes. BREITRUCK, L. May 11, 1951 [May 13, 1950], No. 11125/51. Classes 66 and 125 (3) [Also in Group XXIII] A dispensing stopper for a collapsible tube comprises a cap c adapted to be screwed on to the tube a in place of the ordinary screw cap and having a central hole and a resilient roller f attached by a resilient wire loop g to the cap. The roller fits in a concave portion of the cap, and the hoop g is pivoted both to the roller and the cap so that the roller can be moved aside to allow delivery of the contents. Slight pressure of the roller on a surface to be covered is sufficient to move it aside, or the roller can be moved over the surface without removal from the hole to transfer a film of the material to the surface.
Patent GB-883376-A (GB)
Title: Improvements in and relating to high vacuum plants
IPC: C23C14/56
Filed: 1960-03-30
Abstract: 883,376. High vacuum apparatus. BALZERS AKTIENGESELLSCHAFT FUER HOCHVAKUUMTECHNIK UND DUNNE SCHICHTEN. March 30, 1960 [April 7, 1959], No. 11186/60. Class 8(1). In a method of operating a high vacuum plant comprising a bell 2 into which articles tc be treated under vacuum are introduced and from which they are subsequently withdrawn, dry gas e.g., air is constantly blown through the bell, 2 whilst the latter is connected to atmosphere thereby preventing condensation of moisture on the inner wall of the bell during a subsequent evacuation period. In operation and assuming a vent valve 18 to be open and the bell to have been raised by a jack 7 from a seat 6, articles to be treated are introduced therein through resilient flaps 12, 13 of a surrounding flexible casing 9 having a restricted vent 19, and dry air is forced by a blower 14 through a drier 15 in to the space 17 between the bell 2 and casing 9 and thence in to the bell space 1. The bell is then lowered on to its supporting table 3, the valve 18 closed and the space 1 evacuated through a port 4 leading to a vacuum pump 5. In a modification any gas e.g., nitrogen is introduced directly in to the bell space and in a further modification only that portion near the open end of the bell is surrounded by the flexible casing.
Patent GB-1159223-A (GB)
Title: Novel N-Substituted Azabicyclooctanes and -Nonanes and the preparation thereof
IPC: C07D401/04
Filed: 1967-03-09
Abstract: 1,159,223. 1,4-Substituted piperidines. UPJOHN CO. 9 March, 1967 [1 April, 1966], No. 11193/67. Heading C2C. Novel N - (1 - alkyl - 4 - piperidyl) - azabicycloctanes and -nonanes, wherein the alkyl group contains from 1 to 4 carbon atoms, and the acid addition salts thereof, are prepared by condensing the corresponding N-alkyl-4- piperidone with either 2-azabicyclo-[2,2,2]- octane or 3 - azabicyclo - [3,2,2] - nonane and catalytically reducing the N-( 1 2,3,6-tetrahydro- 1 - alkyl - 4 - pyridyl) - azabicyclo - octane or -nonane thus produced, or by the reductive amination of N-alkyl-4-piperidone according to the Leuckart reaction. Therapeutic compositions, suitable for parenteral, oral, rectal or topical application, contain the above 1,4-substituted piperidines or their acid addition salts as the active ingredient and a pharmaceutically acceptable carrier. The compositions are enzyme inhibitors and are active as central nervous system stimulants.
Patent GB-1415220-A (GB)
Title: Latent image memory
IPC: H01L27/108
Filed: 1973-03-08
Abstract: 1415220 Latent image memory INTERNATIONAL BUSINESS MACHINES CORP 8 March 1973 [13 April 1972] 11274/73 Heading G4C [Also in Division H1] A latent image memory comprises an array of memory cells of two types, cells of the first type being operable to store either one of two binary digits and cells of the second type being operable in response to a first bias condition, to store either one of two binary digits and, in response to a second bias condition, to store only a predetermined one binary digit, there being means for selectively establishing the first and second bias conditions so as to render the memory operable as a read/write and a read only device respectively. To operate the memory as a read only device the second bias condition is established and binary 0 is written into all the cells either initially or before they are accessed. Under the second bias condition second type cells can only store binary 1 so that the device operates as a read only memory storing information in accordance with the distribution of the two types of cells. As described the memory consists of a matrix array of cells on a common semi-conductor substrate. The type one cells consist of a FEF, e.g. T33, and an associated capacitor. The type two cells consist of a charge-coupled device, e.g. cell 32. All the cells are coupled to word W1- W3 and bit B1-B3 lines and to bias lines V1, V2 which are all coupled to a common node 43. The charge-coupled devices are as described in Specification 1,374,009. A FET cell is shown in Fig. 3 and includes a diffused source region S33, coupled to the corresponding bit line, a gate electrode G33 insulated from the body portion B33 by a layer of silicon dioxide, and an electrode H33 which forms the capacitor electrode which is coupled to the bias line, the other capacitor electrode being formed by the upper surface of the drain region D33. The Specification describes the memory as formed on a single integrated circuit chip and gives pulse diagrams illustrating the operation of both types of cell under the two bias conditions.
Patent GB-962017-A (GB)
Title: New water-soluble leuco-sulphuric acid ester salts of vat dyestuffs of the anthraquinone series and a process of the anthraquinone series and a process of making same
IPC: C09B9/02
Filed: 1962-03-23
Abstract: The invention comprises water-soluble leucosulphuric acid ester salts which, in the form of the free acids, have the formula <FORM:0962017/C4-C5/1> where each x is hydrogen, chlorine or -NH aroyl, each y is hydrogen or chlorine, each R is -NH2, -NH alkyl, -N (alkyl)2, -NH cyclohexyl, -NH aryl, -O alkyl, -O aryl, phenyl, piperidino or morpholino, Z is the radical of hydrazine of a diamine bound through the nitrogen atoms to the triazine ring, and wherein the two anthracene and triazine radicals are identical, at least 6 hydrogen atoms are attached to each anthracene nucleus and the alkyl radicals contain 1 to 6 carbon atoms.  The dyes are made by reacting together in an aqueous medium and in the presence of an acid-binding agent, 2 mols. of a compound of the formula <FORM:0962017/C4-C5/2> where R1 is chlorine or has one of the values of R above, and, in any sequence, 2 mols. of a compound of the formula <FORM:0962017/C4-C5/3> where x and y have the meanings given above and 1 mol. of hydrazine or a diamine, and, when R1 is chlorine the product is reacted with 2 mols. of a compound of formula R-H, where R has the meaning given above but is not phenyl.  The leuco-esters are used to dye and print cotton red to yellow shades.
Patent GB-1119401-A (GB)
Title: Improvements in or relating to automatic switching systems
Inventor: CAPLIN JOHN STANLEY
IPC: H04Q3/00
Filed: 1965-03-17
Abstract: 1,119,401. Automatic exchange systems. GENERAL ELECTRIC CO. Ltd. 25 May, 1966 [17 March, 1965], No. 11317/65. Heading H4K. The system described is identical with that disclosed in Specification 1,119,403 and the claims relate to the feature of inhibiting means such that an incoming call at a switching centre cannot be directed back over the incoming route.
Patent GB-180168-A (GB)
Title: Improvements in toy rockers
IPC: A63G15/00
Filed: 1921-04-19
Abstract: 180,168. Macdonald, S. L. April 19, 1921. Rocking-horses.-Relates to rocking-horses of the kind in which the rocking motion produces movement forwards. According to the invention, the back legs 6 are, pivoted at 8. A notch 17 in a bar 12, pivoted at 13 to the back rockers 3, engages a cross-bar 15 on the backward swing of the horse and prevents the hind legs from swing- ing forward again until, on the forward swing, a roller 16, on its forward end, strikes the, ground, as shown in Fig. 3, and lifts the notch 17 clear of the bar 15. The hind legs then swing forward and the action is repeated. The rockers may be locked together by a pin 18.
Patent GB-1446612-A (GB)
Title: Oxygen lances
IPC: C21C5/46
Filed: 1973-03-09
Abstract: 1446612 Oxygen lance for use in steel-making BRITISH STEEL CORP 11 March 1974 [9 March 1973] 11441/73 Heading F4B An oxygen lance with an oxygen conduit 9 has a tip including a circular baffle 2 which splits the flow of oxygen passing down the lance so that a portion passes through an annular passageway 4 and issues from the lance with a radially outward velocity component. An upper part 14 of the baffle is secured to the discharge end of the lance by three metal webs 3. A lower part 15 of the baffle is screwed to the upper part. As shown, the lance may be cooled by water flowing through a passage 12 and around a baffle 13 in an annular elongated closure 1. In an alternative tip construction, the radial width of the passageway 4, instead of being constant, increases towards the end of the baffle.