baber/WOPTO huggingface dataset:
Patent GB-313990-A (GB)
Title: Improvements relating to gramophone and like sound reproducing instruments
IPC: H04R11/08
Filed: 1928-03-20
Abstract: 313,990. Aspden, R. L. March 20, 1928. Gramophone pickups ; loud-speakers.- A gramophone pickup and a loudspeaker are combined in a single unit for connection to the usual gramophone tone arm and horn, the two instruments being connected to the input and output respectively of an amplifier. The case d, its divided into two compartments m, n, the former containing a loudspeaker unit of known construction. Compartment n contains a metal disc b set in vibration by stylus bar a, damped by soft rubber f, and a coil c in close proximity to b carries high-frequency current from a combined oscillator and amplifier l, the output of which is fed to the loudspeaker. According to the Provisional Specification, a reed-driven unit driven by the amplified currents may be connected to the stylus bar to increase the initial movements and provide a regenerative effect. Alternatively a stylus-driven diaphragm may have its movements amplified, by electromagnets energized by the amplified currents, and acting on its outer portion.
Patent GB-755664-A (GB)
Title: Improvements in methods of and apparatus for manufacturing cast iron pipes and otherelongated hollow articles
IPC: B22D13/02
Filed: 1954-03-23
Abstract: 755,664. Making seamless tubes; foundry plant. BUDERUS'SCHE EISENWERKE. March 23, 1954 [March 23, 1953], No. 8490/54. Classes 83 (1) and 83 (2). Cast-iron pipes &c of high-grade cast-iron, preferably in which the graphite separates out in spheroidal form, are made by centrifugal casting in a horizontal mould 1, heat-treating in a chamber 2 in line with the mould and finally rolling, drawing, forging, &c. to size, e.g. in a rolling-mill 4.
Patent GB-739964-A (GB)
Title: Glass blending
IPC: C03B5/187
Filed: 1954-03-23
Abstract: 739,964. Glass manufacture. CORNING GLASS WORKS. March 23, 1954 [March 23, 1953; March 23, 1953], No. 8497/54. Class 56. Relates to the conditioning of molten glass for the production of relatively large or massive pieces, particularly for ophthalmic or optical purposes, wherein the index of refraction is substantially wholly constant and in which cords and strife have been eliminated. Newly melted glass 20 passes substantially entirely into a circular stack 12, containing an impeller 25, within a blending zone 11 and is circulated therein and mixed with that in the blending zone. The blended glass then passes through a cylinder 32 to the discharge 33 and in the cylinder it is subjected to the constant shearing action of a stirrer 41. Specification 639,772 and Canadian Specification 495,378 are referred to.
Patent GB-450705-A (GB)
Title: Improvements in and relating to destructive hydrogenation of carbonaceous materials
IPC: C10G1/06
Filed: 1935-03-19
Abstract: In the destructive and similar hydrogenation treatment of carbonaceous materials with circulating hydrogenating gases, a hydrogenating gas of substantially constant composition and purity is obtained by subjecting the gaseous and vaporous products of the reaction to the usual condensation by water cooling, removing the residual lowest boiling benzine constituents from the gases, e.g. by washing or low temperature cooling, then branching off from the gas cycle a regulated partial stream and removing from this stream by low temperature cooling foreign gases to the desired degree, and finally recombining the partial stream with the other part of the gas stream. Bituminous coal is destructively hydrogenated at 460 DEG  C. and 300 atmos.  From the cycle gas containing 74 per cent hydrogen, 16 per cent methane, 1,5 per cent ethane 0,5 per cent higher hydrocarbons, 2 per cent carbon monoxide, 6 per cent nitrogen, the so-called gas benzine is removed by cooling to -30 DEG  C.  About 17 per cent of the gas stream is branched off, washed with water under pressure and cooled to -190 DEG  C., by release of pressure to 50 atmos.  The gas thus purified from methane is recompressed and recombined with the remainder of the stream.
Patent GB-1409650-A (GB)
Title: Apparatus for making cigarette filter tubes
IPC: A24C5/46
Filed: 1974-02-26
Abstract: 1409650 Filter making apparatus A KASTNER 26 Feb 1974 [30 Oct 1973] 8535/74 Heading A2C Apparatus for producing cigarette paper filter tubes comprises an assembly for continuously forming a cigarette paper into a hollow tube and means for sequentially cutting cigarette tube lengths from an advancing leading end of the hollow tube, and apparatus for forming and inserting a plug of filter material sequentially into one end of the cigarette tube lengths, and clamping means for holding the cigarette tube lengths during insertion of the plugs of filter material consisting of an indexed intermittently moving endless belt carrying and advancing filter material, the endless belt advancing the filter material in the form of a rope or tow incremental distances equal to a desired length of a plug of filter material, and severing means for sequentially severing filter plugs of equal and constant length from a leading end of the filter rope or tow and transfer means for sequentially advancing filter plugs into a filter plug injection nipple in axial alignment with a cigarette tube length held in clamped position, and means for reciprocally advancing the filter plug injection nipple into an open end of the clamped cigarette tube length and for retracting the nipple therefrom, and restraining means to hold one plug of filter material within the cigarette tube length during retraction of the nipple. As shown filter plug material 16 is supplied by spool 18 in the form of a rope or tow of cellulose acetate. A series of pulleys 24, 30, 32, 34, 28 supporting an endless belt 22 conveys material 16 through forming member 62 whereby it assumes a circular cross-section. At 66, 68 the advancing end of the material 16 is severed into filter plug lengths. Intermittent belt movement ensures constancy of plug length. Movement of severed filter plugs is shown in Fig. 2 at 96, 100 and 100', the latter being advanced from transfer 'block 98 into aligned bore 112 in readiness for reception at the rearmost end 116 of injection nipple 118. Advancing cigarette tube lengths are positioned in slots 172 and clamping members 178 (shown only in Fig. 1) are lowered over slots 172 to maintain the tube length therein during insertion of a filter plug at the forward end thereof.
Patent GB-1417669-A (GB)
Title: Bistable electromagnetically-actuated valve
IPC: F16K31/08
Filed: 1972-11-02
Abstract: 1417669 Valves FLUID DEVICES Ltd 2 Nov 1973 [2 Nov 1972] 8576/75 Divided out of Co-pending 50624/74 Heading F2V A magnetically actuated valve (Figs. 1, 2) comprises a slidable armature 1 in a diamagnetic tube 6 sealedly attached to stationary polepieces 2, 3. A steel sleeve 8 with endpieces 9 surrounds the tube and polepiece assembly and also a bobbin 10 with separate windings 11a, 11b on parts of the bobbin interconnected by four webs 12, which retain four sector shaped ceramic radially magnetized machined permanent magnets 13. Series energization of the coils is applied over connector 14 with terminals 15, 16 and earth pin 16, and the coil assembly is removable by detaching retaining nut 17. Integral rectifiers may be inserted in cavities of connector 18 for A.C. operation. On de-energization, the armature 1 is as shown in upper position retained against upper polepieces 2. On D.C. energization of windings 11a, 11b the armature is impelled downwards to the opposite polepiece 3 where it is retained on de-energization. The armature position is reversible by further energization of windings 11a, 11b in reverse polarity and it is then retained against polepiece 2. The polepieces 2, 3 extend from each end into the armature tube 6 and have valve orifices: that of polepiece 2 being a bore 33 in a central projection communicating with a first fluid connection 34 while polepiece 3 has an axial bore containing an, e.g. ferromagnetic coaxial tube 35 whose lower end 36 exceeds the remainder in diameter for an interference fit. The upper end is connected to a fluid connection 37 over transverse bore 38, and the tube is also surrounded within the polepiece by annular duct 39 connected to a fluid connection 40 over transverse bore 41. Armature 1 has a stepped central bore with a rubber valve seat 43 at each end and is radially slotted in its end faces and longitudinally slotted of its periphery, so that connection 40 and annular duct 39 communicate with the space within which the armature moves, and alternatively with connections 34, 37 dependently on the armature position.
Patent GB-946168-A (GB)
Title: Improvements in typographical composing machines
IPC: B41B11/18
Filed: 1962-03-07
Abstract: 946,168. Type-bar-making machines. MERGENTHALER LINOTYPE CO. March 7, 1962 [March 8, 1961], No. 8716/62. Heading B6W. Distributing matrices and spacebands.-The composed line is transferred from the first elevator to the second elevator and the spacebands are further transferred to the spaceband box by a single transfer means. Matrices and spacebands raised by the first elevator 17, Fig. 1, are pushed into the intermediate transfer channel by a transfer member 19, Fig. 2, on a carriage 28. The matrices are removed from the line by the second elevator 20 and the spacebands are then pushed into the spaceband box 13 by the same member 19. The movement of the carriage 28 is produced by a lever 47 controlled by the transfer cam 46 and a spring 52. The lever 47 is connected to a link 49 carrying a stud 53 on which is rotatable a pinion 55 meshing with a fixed rack 58 and with a rack 61 on the carriage 28. The cam 46 is shaped so that the member 19, under the action of the spring 52, moves the line into the transfer channel, pauses while the matrices are moved, then pushes the spacebands into the box, and moves slightly to the left to normal position. The slide is moved to its leftward position at the start of each machine cycle and held there by a latch 24, released when the first elevator reaches its upper position, and a lever 33, released when the second elevator reaches its lower position. A manually-operated latch 71 also holds the slide when a line is to be re-cast. A brush 76 on the spaceband rail 75 prevents twisting of the spacebands. As the slide moves to the right, a catch 40 secured thereto engages an upwardly projecting member of the first elevator line stop and draws it to line-receiving position in the elevator. When the line has just been moved into the transfer channel, a roller 56 mounted on the stud 53 momentarily closes a switch 74, and the same time a second switch in parallel therewith is momentarily opened by the transfer cam. If jamming is caused by a bent matrix, the switch 74 is not closed and the machine stops when the second switch is opened. Specification 925,597 is referred to.
Patent GB-182168-A (GB)
Title: Improved means for generating continuous electric oscillations
IPC: H03B5/10
Filed: 1921-03-21
Abstract: 182,168. Agate, C. S., and Willans, P. W. March 21, 1921. Thermionic oscillation generators.-A valve generator has an oscillatory circuit connected in its plate or grid circuit, and a capacity and inductance in series in its grid or plate circuit, the inductance-capacity product being the same for both circuits. As shown in Fig 1, the oscillatory circuit CL is connected between the plate and filament, and the inductance L<1> and series capacity C' between grid and filament. The capacity C<1> is shunted by a choke coil Q of high inductance and small self-capacity. If the coil Q has a low inductive or capacity reactance, this reactance should be taken account of in calculating the inductance-capacity product of the circuit. Alter. ternatively, as shown in Fig. 2, the oscillatory circuit CL may be connected to the grid, and the series arrangement C<1>, L<1> to the plate. The condenser C<1> may be connected as a shunt to both the choke coil Q and the plate battery. According to the Provisional Specification, the choke coil may, in certain cases, be replaced by a resistance, which may be connected at one side to some point in the high tension battery so as to apply a positive potential to the grid. Reference has been directed by the Comptroller to Specification 172,127.
Patent GB-659645-A (GB)
Title: Helical compression springs
IPC: F16F1/06
Filed: 1949-04-01
Abstract: 659,645. Springs. AUSTIN MOTOR CO., Ltd., BISHOP, J. L. H., and JONES, G. March 9, 1950, No. 8857. Drawings to Specification. [Class 108(iii)] In a coiled spring of the kind in which the pitch angle of the coils increases progressively toward the middle of the spring, the variation of pitch angle is represented by a full wave sine curve combined with an ascending straight line curve connecting straight line curves which represent the dead end-coils and into which the sine curve merges at its ends without rapid change of angle. The spring is shown developed into a plane curve the slope at each point of which equals the pitch angle of the spring at that point. According to the Provisional Specification a circular or parabolic curve may be employed in lieu of a sine curve.
Patent GB-435557-A (GB)
Title: Improvements in insulating electrical conductors
IPC: H01B3/44
Filed: 1934-03-21
Abstract: 435,557. Cables. GROVES, W. W., 30, Southampton Buildings, Chancery Lane, London.-(I. G. Farbenindustrie Akt.-Ges.; Frankfort-on-Main, Germany) March 21, 1934, No. 8875. [Class 36] Wires or other longitudinally extended electrical conductors are insulated by winding with sheets or bands of polyvinyl chloride, or polyvinyl chloride which has been further chlorinated, the sheets or bands being free from residues of solvent, and subjecting the wound conductors to a heat treatment sufficient to cause fusing of the overlapping edges of the sheets or bands to form a tight covering. A band, 20 Á, thick, of polyvinyl chloride, having a chlorine content of 62-65 per cent, is dried to free it from volatile solvents and is laid helically on copper wire so that the edges of the band overlap. The wound wire is guided over rollers and passed through a dryer wherein it is heated to 80‹ C. for ten minutes. Two or more windings may be applied to the conductor, the windings being fused together ; pressure may be applied after the heat treatment. Filling materials or softening agents, such as oils, mica, asbestos, silk waste or artificial silk waste, may be added to the polyvinyl chloride.
Patent GB-850178-A (GB)
Title: Improvements in the manufacture of polyformal materials
IPC: C08G18/56
Filed: 1957-03-19
Abstract: Polyformals having a M.W. of at least 1270, a hydroxyl number of less than 200 and terminal hydroxyl groups are obtained by reacting formaldehyde (including formalin or paraformaldehyde) with a hydroxy compound of one of the classes specified below, in the presence of an acidic catalyst, and separating the evolved water by the application of vacuum to the reaction mixture, the process being carried out at temperatures not exceeding 130 DEG C. The hydroxyl compounds which may be used are (A) substituted and unsubstituted linear glycols having at least 4 C atoms in a chain between the hydroxyl groups, e.g. tetra-, penta-, hexa-, octa-, and deca-methylene glycols, and pentane-diol-1,5; and 2-methyl pentane diol-1,5, 3-methyl pentane diol-1,5, 3-vinyl pentane diol 1,5, 2 (methoxyethyl) pentanediol-1,5, 2,2,4-trimethyl pentanediol-1,5, 2-methoxyhexandiol-1,6 trans-butenediol-1,4 and 2,4-hexdienediol-1,6; (B) substituted and unsubstituted linear glycols having between the hydroxyl groups a chain of at least five atoms including at least 4 C atoms in groups of at least 2, with carbon groupings at the terminal ends of the chain and the remaining chain atom or atoms being S or O and occurring singly between successive carbon groupings, e.g. di- and poly-ethylene glycols, di-and poly-propylene glycols, polytetramethyleneglycol derived from tetrahydrofuran and of M.W. up to 700, thiodiglycol and mixed propylene-ethylene polyglycols, (C) polyhydric alcohols containing more than two hydroxyl groups any two of which are separated by a chain of at least 4 C atoms, e.g. 1,5,9-trihydroxynonane, bis-(2,6-dihydroxyhexyl) ether, 5-(2-hydroxyethoxy)-4-hydroxymethyl-2,4-dimethyl pentanol-1 and the condensation product of 1 mol of trimethylolethane with 20 mols of ethylene oxide and (D) alicyclic polyhydroxy compounds in which at least three ring atoms separate any two hydroxyl groups, e.g. 1,3,5-trihydroxycyclohexane.  The substituents in (A) and (B) are alkyl, alkenyl, cycloalkyl and alkoxyl groups.  The reaction products of formaldehyde with various mixtures of the above hydroxy compounds are described and claimed.  The reaction is normally carried out with a slight stoichiometric excess of formaldehyde.  Catalysts specified are hydrochloric, sulphuric and phosphoric acids, ferric, stannic, zinc or aluminium chlorides, boron trifluoride, sodium hydrogen sulphate, methane-, camphor-, naphthalene- or p-toluene-sulphonic acids, or a sulphonic acid ion exchange resin; they may be neutralized or filtered off when the desired stage of reaction has been reached. The polymers may be further reacted with difunctional anhydrides, esters, acid halides, isocyanates, or vinyl acetates, preferably in the presence of basic catalysts, to produce polymers of higher molecular weight.  The polymers are stable towards bases but are hydrolysed by water in the presence of acid catalysts.  Uses. Plasticizers, lubricants and oil additives.
Patent GB-1135833-A (GB)
Title: An electric machine, particularly a turbo-generator, having slip rings and brush holders
IPC: H02K9/28
Filed: 1966-03-01
Abstract: 1,135,833. Brush-holders for dynamo-electric machines. LICENTIA PATENT - VERWALTUNGS-G.m.b.H. 1 March, 1966 [1 March, 1965] No. 8970/66. Heading H2A. To prevent electric shock while changing the brushes, e.g. in a turbo-generator which it is undesirable to stop, the brush carriers 10, 11 surround the slip-rings 12 to prevent them being touched. In addition, they provide an annular flow channel through which cooling air 17, 18 is drawn axially by a fan at 27. The cooling air flows through axial channels 13 in the sliprings and slots 33 in the brush carrier ring. The carrier ring is covered by a plate 23 of insulating plastics and is mounted by a ring 25. Another set of brushes is mounted at 25a on the other side of fan 27. The brush boxes 15 are radially adjustable and covered with insulating material. The brush carrier is divided into two or more segments.
Patent GB-1092586-A (GB)
Title: Improvements in or relating to radio transmitters
Inventor: O'BRIEN WILLIAM JOSEPH
IPC: H04B1/12
Filed: 1966-03-01
Abstract: 1,092,586. Radio transmitting system; radio navigation. DECCA Ltd. Oct. 4, 1966 [March 1, 1966], No. 8973/66. Headings H4D and H4L. The invention relates to the suppression of unwanted frequencies f 1 , f 2  . . . Fig. 1, in the radiation from a pulse transmitter. The arrangement of Fig. 1 shows a loran C transmitter producing pulses A by means of a timing pulse source 10 energizing a ringing circuit 11, said ringing circuit also producing unwanted signals at frequencies f 1  etc. which will interfere with other navigation system-e.g. Decca Navigation systems. A filter 16 extracts some of the f 1  signals from the output of the ringing circuit and feeds them to manual gain and phase controls 17 and 18. The gain and phase controlled f 1  signal is added to the ringing circuit output in receiver 12 and the composite signal is fed via a power amplifier 13 to a transmitting serial 14. A monitoring aerial 21 picks up a small part of the radiated signal and the f 1  content therein extracted by filter 22 and fed to an oscilloscope 20. Controls 17 and 18 are adjusted until the amplitude of the f 1  content as shown on the oscilloscope is seen to fall to zero. The output of filter 16 may be delayed slightly to that the sharp leading edge of the pulse output of circuit 11, is not interfered with. Filters 26 and associated controls may be provided for removing other frequencies, corresponding filters 29, 30 being added to the monitoring stage. Fig. 2 shows the application of the invention to a pulse telegraphy transmitting system, wherein because of the linearity of the Class-C amplifier 41 the adjusted f 1  signal must be added at 43 after the power amplification stage.
Patent GB-439776-A (GB)
Title: Improvements in or relating to systems of sculptural reproduction in three dimensions, by means of instantaneous photography
IPC: G03F7/00
Filed: 1935-03-22
Abstract: 439,776. Photographic statuary reproduction. CASTELCICALA, F. SALLIER DE LA TOUR, PRINCE OF, 23, Piazza Olivuzza, Palermo, Italy. March 22, 1935, No. 9063. [Class 98 (ii)] Vertical luminous strips are projected on to the object, and the contours formed thereby are photographed by two cameras placed with their optical axes at right angles to the planes of the luminous strips. Two diametricallyopposed cameras 1, 2 are focussed on the subject 3 to be reproduced and the latter is illuminated from a direction at right angles to the axes of the cameras by projectors 5, 6. Lined screens 11, 12 are placed in the projectors or at a short distance from the subject, so that a series of parallel coincident luminous strips are thrown on to the subject. When the exposure is made in the open, sunlight is passed from reflectors through the lined screens on to the object. Photographs of the " numerous profiles" are taken by the cameras, the two exposures being taken simultaneously, and the resulting outlines are enlarged and transferred by carbon paper to cardboard or wood of appropriate thickness. The patterns may be assembled together to form a solid geometrically similar to the subject. Alternatively the profiles on the film may be translated into wood or wax patterns by means of a pantograph provided with a cutter.
Patent GB-447568-A (GB)
Title: Improvements in or relating to hermetically closable envelopes for cigars or other articles
IPC: B65D77/30
Filed: 1935-03-22
Abstract: 447,568. Tearable hermetic package for cigars &c. AITKEN, J., 16, Florence Road, Sanderstead, Surrey, and BRADEN, W. E., 28, Reed Pond Walk, Gidea Park, Essex. March 22, 1935, No. 9069. [Classes 66, 94 (i), and 94 (ii)] A hermetic envelope of gelatine, soft metal, &c. for a cigar &c. 4 comprises a sheath &c. 1 closed at one end 2 and furnished with a stopper 6, a rigid anchor 3 being provided arranged wholly and movably within the sheath and attached to the cigar &c., and a flexible member 7 attached at one end of the anchor 3 and extending outwardly from the sheath serving for effecting the ripping of the sheath, the removing of the stopper, and the projecting of the cigar &c., Fig. 3. The anchor member 3 may be tridentshaped at 14 for the attachment of the flexible member 7 or a lug may be upstruck from the anchor for that purpose. The attachment of the cigar &c. to the anchor may be effected by a slot 9 in the upper surface 5 of the anchor receiving the bunched end 8 of the wrapping of a wrapped cigar 4. Alternatively, the cigar may be held thereon by resilient arms, by a cup-shaped lower extremity or by impaling on a projecting spike formed in the head 5. An outer shrinkable cap 16 may also be provided. The sheath may be cylindrical, spherical, &c. in shape.
Patent GB-263735-A (GB)
Title: Two-stroke cycle internal combustion engines
IPC: F02B25/00
Filed: 1926-04-07
Abstract: 263,735. Morgan, A. Jan. 2, 1926, [Convention date]. Two-stroke-cycle engines; cylinders, internal passages of.-In engines having pumps e, f, for supplying air and combustible mixture to the working cylinder a through piston controlled ports, the pumps are driven from cams so that the pump pistons lag behind the main piston b, the pumps e supplying air before, during and after the delivery of mixture by the pumps f. Air and mixture are delivered during the wholetime the cylinder ports to receive them are open. The air and mixture enter the cylinder through an axial passage s in the piston, the passage communicating with the cylinder ports through curved channels q, r.