baber/WOPTO huggingface dataset:
Patent GB-382123-A (GB)
Title: Manufacture of organic nitrates applicable in the explosives industry
IPC: C07C201/02
Filed: 1931-12-15
Abstract: A mixture comprising diethylene glycol or other polyalkylene glycol with other liquid polyhydric alcohols is nitrated whilst well agitating the mass and maintaining the temperature below 20 DEG  C., and preferably below 15 DEG  C., by means of an acid mixture containing an excess of nitric acid, the amount of water being 2-8 per cent (preferably 3-5,2 per cent) when nitrating a mixture containing no glycerine, and 3,8-10 per cent (preferably 4,5-7 per cent) when nitrating a mixture containing no glycerine, and the amount of sulphuric acid 44-54 per cent (preferably 51-52 per cent) when nitrating a mixture containing glycerine and 39-55 per cent (preferably 45-53 per cent) when nitrating a mixture containing no glycerine.  The separation of the mixed nitrates may be accomplished by letting the mixture stand in the cold, and drawing off and washing the upper liquid layer.  The following examples are given.  For the nitration of mixtures containing glycerine and diethylene glycol in the proportions (a) 80 : 20, (b) 60 : 40, (c) 35 : 65, and (d) 20 : 80, there are used respectively acid mixtures comprising nitric acid, sulphuric acid, and water in the following proportions: (a) 46 : 50 : 4, (b) 46,4 : 49,4 : 4,2, (c) 46,6 : 48,5 : 4,9, and (d) 46,9 : 48 : 5,1.  A mixture containing 10 parts diethylene glycol and 90 parts ethylene glycol is nitrated with nitric acid 42,5 per cent, sulphuric acid 53 per cent, water 4,5 per cent. A mixture of equal parts diethylene glycol and ethylene glycol is nitrated by means of nitric acid 44,82 per cent, sulphuric acid 50,8 per cent, water 4,38 per cent.  Mixtures comprising glycerine, ethylene glycol, and diethylene glycol in the proportions (a) 65 : 30 : 5, and (b) 50 : 40 : 10, are nitrated by means of acid mixtures containing nitric acid, sulphuric acid, and water in the proportions (a) 44,9 : 51,3 : 3,8, and 44,8 : 51,4 : 3,8, respectively.  The diethylene glycol may be replaced by other polyalkylene glycols such as di-propylene glycol and ethylene-propylene glycol.  The products have a low freezing-point, and blend well with nitrocellulose for making smokeless propellent powders.
Patent GB-1062646-A (GB)
Title: Rotary fluid pressure motors and pumps
IPC: F04C2/10
Filed: 1963-09-03
Abstract: 1,062,646. Rotary motors and pumps. GERMANE CORPORATION. Sept. 3, 1963 [Sept. 5, 1962], No. 34785/63. Heading F1F A rotary fluid-pressure motor (or pump) comprises a body 1, Fig. 3, made from axially aligned sections 2, 3, 4, 5, 8, preferably of synthetic plastics material, with the central section 8 formed with internal teeth 21, Fig. 11, meshing with a star member 23 having one less tooth. The star member 23 also preferably of synthetic plastics material with a metallic core 24 is connected by a spline-ended shaft 37 to a twopart drive shaft 15, 16 so that the star member rotates about its own axis and orbits with respect to the internally-toothed central section 8. Section 2 includes an inlet port 41 connected to a fluidpressure source e.g., compressed air and an exhaust port 42 connected, e.g., through a muffler to atmosphere. The section 8 and star member 23 are abutted by metallic plates 6, 7, to define variable volume working chambers. The chambers being successively connected to the inlet port 41 through a ring of ports 47 in the plate 6, one for each chamber, an annular channel 46, duct 45 and annular channel 44 in the section 4 and a passage 43 in the section 2 and to the outlet port 42 through a ring of ports 54 in the plate 7, in alignment with the ports 47, an annular channel 51, radial channels 52 in the section 5, passages 53 through the sections 8, 6, 4, radial passages 50 and an annular channel 49 in the section 4 and a passage 48 in the section 2. The rings of ports 47, 54 being located radially inwardly with respect to the bottoms of the teeth 26 so that as the rotor rotates orbitally in the section 8, the ports 54 co-operate with channels (56), Fig. 12 (not shown) on one side of the rotor and the ports 47 with channels 55, Fig. 11 on the other side of the rotor to finally connect the outlet and inlet ports respectively to the chambers. The invention is described as operating as a motor but by reversing the flow of fluid through the apparatus it may operate as a pump. The section 8 is shown with 7 teeth and the rotor 23 with 6 teeth but other numbers of teeth may be used providing the rotor has at least one less tooth than the section 8.
Patent GB-1132285-A (GB)
Title: A method for purifying propylene
IPC: C07C7/12
Filed: 1966-08-03
Abstract: 1,132,285. Purifying propylene. B. E. BARTRUM (Dow Chemical Co.). 3 Aug., 1966), No. 34839/66. Heading C5E. Substantially anhydrous liquid propylene is freed from carbonyl sulphide by contact with an anhydrous weakly-basic anion exchange resin of the polyamine type. The process is preferably conducted at ambient temperature under sufficient pressure to maintain the propylene in the liquid phase. The resin may be regenerated by a nitrogen/steam mixture at 100‹ C. followed by drying by passage of dry nitrogen or sulphurfree natural gas.
Patent GB-1067250-A (GB)
Title: Regeneration of solutions loaded with carbon dioxide
Inventor: SCHROEDER WOLFGANG
IPC: B01D19/00
Filed: 1964-08-26
Abstract: 1,067,250. Regeneration of solutions used for absorbing carbon dioxide. BADISCHE ANILIN-& SODA-FABRIK A. G. Aug. 26, 1964 [Aug. 27, 1963], No. 34865/64. Heading BIB. A solution which has been used for the removal of carbon dioxide from gases in an absorber A is regenerated by flashing the solution to atmospheric pressure in one, two or three flash vessels E and then heating it in a steam heated desorber D. The hot vapours saturated with steam leaving the top of the desorber are recycled through a line 7 to the flash vessel in which the solution has been flashed to atmospheric pressure so bringing them into direct heat exchange with the cold solution in the flash vessel. Prior to introduction into the desorber the solution is preheated in an indirect heat exchanger W. The regenerated hot solution flowing from the bottom of the desorber passes through the exchanger W and a cooler K back to the top of the absorber. The vapours liberated in the heat exchanger may be united with those from the desorber in line 7. About 80% by volume of the solution degassed by flashing is recirculated through line 3 to the middle portion of the absorber for preliminary washing of the gases. Examples of solutions are aqueous triethanolamine and aqueous solutions of the potassium salt of N-methyl-amino propionic acid and of potassium arsenite.
Patent GB-486970-A (GB)
Title: Improvements in electric cables
IPC: H01B9/06
Filed: 1936-12-19
Abstract: 486,970. Cables. CALLENDER'S CABLE & CONSTRUCTION CO., Ltd., BRAZIER, L. G., and HAMILTON, G. M. Dec. 19, 1936, No. 34927. [Class 36] In a cable of the type in which a flexible wall applied to the outside of the dielectric separates the space within the cable sheath into two regions, one of which contains the conductor and impregnated dielectric and the other a fluid, the wall consists of an extruded tube of a polyvinyl halide, with or without plasticizers and fillers such as tricresyl phosphate, dodecyl phthalate, dibenzyl naphthalene and talc. The fluid may be either a gas or liquid and may be at super atmospheric pressure. In the construction shown, the cable comprises an oval conductor 1, impregnated paper insulation 2, an extruded flexible wall 3 of a material having a polyvinyl halide as its principal constituent, a conducting layer 4 serving as an electric screen, and a reinforced circular sheath 5. A fluid, which may be under substantial pressure, fills the spaces 6 between the conducting layer and the sheath. Specifications 264,135, [Class 36], and 436,295 are referred to.
Patent GB-463750-A (GB)
Title: An improved bellows device for inflating and deflating hollow bodies
IPC: A47C27/08
Filed: 1935-12-17
Abstract: 463,750. Bellows. COW & CO., Ltd., P. B., and FULLER, J. N. Dec. 17, 1935, No. 35021. [Class 8 (i)] A bellows is provided at one end with an inlet valve and a connection 4 for deflating articles, and at the other end with an outlet valve and a connection 5 for inflation. Reinforcing rings 10 and strap handles 12 allow the bellows to be worked in concertina fashion.
Patent GB-1434556-A (GB)
Title: Endoscopes
IPC: G02B6/04
Filed: 1973-07-24
Abstract: 1434556 Endoscopes CANON KK 24 July 1973 [24 July 1972] 35161/73 Heading G2J An endoscope comprises an objective lens 2, a colour dispersion and light deflecting means 13 which directs light on to the distal end of an optical fibre bundle 8, and colour re-integration means 11 positioned at the proximal end of the bundle 8. The means 13 may be one or more prisms or diffraction gratings. Similarly the means 11 comprises a prism or a diffraction grating As shown in Fig. 5, an object may be illuminated by light passing from an optical fibre bundle 17 and reflected by the silvered base of a prism 23 which forms the means 13.
Patent GB-626893-A (GB)
Title: Improvements in or relating to diamond wheel dressing tools
IPC: B24B53/12
Filed: 1946-11-28
Abstract: 626,893. Diamond-dressing tools. CORONEL, M. SENIOR-. Nov. 28, 1946, No. 35260. [Class 124] In a diamond-dressing tool the diamond holder has four markings aligned with the octahedral edges of the diamond whereby, when the tool is set up, either opposite pair of these markings is disposed in the plane of rotation of the work-piece so that the latter strikes the hard corner of the diamond along one of these octahedral edges and avoids natural splitting of the diamond. As shown a diamond having a hard corner H is mounted in a holder in such a manner that the octahedral edges E1 and E3 are aligned with markings M1 and M3 and the mounting set in the machine so that the markings M1 and M3 are in the plane of rotation of the work-piece W. In a similar manner edges E2 and E4 (not shown) are aligned with markings M2 and M4 (not shown).
Patent GB-155538-A (GB)
Title: Loading and unloading apparatus
IPC: B66C23/20
Filed: 1920-12-15
Abstract: 155,538. Harrington, N. T. Dec. 18, 1919, [Convention date]. Rope railways. - In a loading system in which two pivoted or rolling towers support a rope stretched between them, means are described for rocking the towers in unison for enabling guy ropes of constant lengths to serve for all positions of the tower. Figs. 1 and 3 show one arrangein which the rope 5 is fixed directly to one tower and tensioned by a system of pulleys 3 at the other end. The lower end of each tower forms a counterweight to the upper portion of the structure, and is fitted with a pair of curved surfaces 11 which roll on tracks 13 during the swinging of the tower. Ropes 15 pass from anchoring points at each end of the curved surfaces, round grooves provided in these surfaces, and thence to fixed points on the ground on the side remote from the connection to the tower. These ropes prevent the curved surfaces from slipping on the tracks during the rocking of towers. To hold the curved surfaces down on the tracks, anchoring ropes 20 pass from fixed points on the ground over a pulley 19 on the tower. The anchorage points and the position of the pulley are chosen so that the point 19<a> moves in an elliptical path. The track 13 may be undulating to assist in obtaining this exact elliptical movement, which is stated to eliminate any tendency of the tower to slip when in an inclined position. For actuating the towers, in unison, a rope 24 is reeved between a power-driven drum 23 and anchorage pulleys 26. A second drum, on the same shaft as the drum 23, is connected by ropes to the other tower, which is moved simultaneously. Fig. 7 shows a modification in which one tower is fixed, while the other swings about an inclined shaft 185, the axis of which is in line with the top of the fixed tower and with the anchoring- pin 151 for the stay-rope 150. This arrangement ensures that the rope 150, and the ropes passing between the heads of the towers, each form generating lines of cones as the movable tower swings about its axis, thus enabling ropes of constant length to remain taut in all relative positions of the towers.
Patent GB-1101758-A (GB)
Title: Improvements in or relating to water-soluble polymeric salts and their use in paper-making processes
IPC: C02F1/52
Filed: 1965-08-18
Abstract: 1,101,758. Flocculating. NATIONAL STARCH & CHEMICAL CORPORATION. 18 Aug., 1965 [2 Sept., 1964], No. 35373/65. Heading C1C. [Also in Divisions C3 and D2] Water-soluble salts of polymers or copolymers of ethylenically unsaturated carboxylic acids which have been partially or completely aminoalkylated to form amino-ester derivatives (see Division C3) are suitable for flocculating suspensions of minerals, e.g. in the treatment of industrial waste and process streams, mixing and metallurgical processes, and clarification and purification of water. In an example, the hydrochloride salt of poly- (2.aminoethyl acrylate) is used for flocculating an aqueous suspension of kaolin clay.
Patent GB-746469-A (GB)
Title: Improvements relating to refrigerators
IPC: F25B31/00
Filed: 1954-12-07
Abstract: 746,469. Refrigerators. GENERAL ELECTRIC CO. Dec. 7, 1954 [Dec. 9, 1953], No. 35435/54. Class 29. Water condensate from the cabinet 6 drains through a pipe 7 into a tray 25 where it is evaporated by heat exchange with a cooling coil 18 for the motor-compressor lubricant. The sealed casing 9 is divided at the bottom by a vertical wall 15 into two spaces 16, 17, the oil level in space 16 being higher than that in space 17. Coil 18 is connected at 19, 20 to spaces 16, 17 and the oil flows through the coil by gravity. It is withdrawn from space 17 by pipe 26, is sprayed over the motor and is collected in space 16.
Patent GB-1131128-A (GB)
Title: Improvements in telephone privacy apparatus
Inventor: SMITH DAVID HESELTINE
IPC: H04K1/02
Filed: 1966-08-08
Abstract: 1,131,128. Secret transmission; amplitude modulation. COMMUNICATIONS CONSULTANTS Ltd. 8 Aug., 1967 [8 Aug., 1966], No. 35439/66. Headings H3R and H4R. The speech band is applied to two balanced modulators 18, 20 by way of phase-shift networks 22, 24 which place the inputs in quadrature, and the modulators are fed with an audiofrequency carrier 28 through similar phase-shift networks 30, 32, with the result that only the lower side-band is delivered to an amplifier 26 for transmission. The receiving path comprises a demodulator 34 and amplifier 36. The modulators and demodulator consist of diode bridges and resistors which can be constructed as integrated circuits together with the amplifiers, these being field effect transistors. In a more complex arrangement, Fig. 3 (not shown), the original erect speech band and the carrier are transmitted in addition to the lower side-band. In the receiving path the carrier is filtered out, and the erect speech band is excluded by demodulation with a suitably phased carrier.
Patent GB-1014731-A (GB)
Title: A method of and apparatus for determining the required surface hardening conditions for cylindrical workpieces
IPC: C21D1/55
Filed: 1962-09-18
Abstract: In a method for determining the appropriate conditions for the surface hardening of cylindrical workpieces such as rolls there is produced from the workpiece a sample segment having an arcuate face conforming to the cylindrical surface of the workpiece.  The plane faces of this segment are lagged with thermally insulating material, and the segment is then heated and quenched from the arcuate end face.  Temperature distribution during treatment may be monitored continuously by means of thermocouples inserted into the specimen, or the treated specimen may be subsequently examined micrographically. Preferably the examined micrographically. Preferably the sample is in the form of a sector-shaped prism taken from a disc-shaped section of the workpiece. In the case of rolls, the sample disc may be cut off prior to forging of the roll necks, may be taken from the end of a neck, or the roll may be forged with one neck larger than the other and an annular disc then removed whose outer diameter is that of the roll face and inner diameter that of the neck. The method is applicable both to induction and flame-hardening processes.  Where hardening of the roll is carried out by passing it axially through a ring inductor, so that some axial flow of heat occurs it is preferable to use prisms as shown in Fig. 4 in which the height substantially exceeds the width.  In a particular form of apparatus (Fig. 5), segment 8 on holder 15 may oscillate about axis 16 in either of positions 18 or 19.  In position 18 the segment moves with its arcuate face in close proximity to inductor 20, while in position 19 it is subjected to water spray 22.  Action of the <PICT:1014731/C6-C7/1> <PICT:1014731/C6-C7/2> <PICT:1014731/C6-C7/3> spray is preferably confined to face by means of shield 23 shaped as shown in Fig. 6.
Patent GB-1041710-A (GB)
Title: Sun visors for motor vehicles
Inventor: STEVENSON NORMAN JAMES
IPC: B60J3/02
Filed: 1964-08-29
Abstract: 1,041,710. Motor car visors. PERFECTA MOTOR EQUIPMENTS Ltd. Aug. 13, 1965 [Aug. 29, 1964], No.35467/64. Heading B7J. [Also in Division B5] A block, slab or sheet of expanded polystyrene, polyurethane or a polyester 1 having cut-away portions 2 and bevelled edges 3 is cast on to a fluted tube 4 of P.V.C., nylon, polystyrene, polypropylene or metal, and is enclosed in an envelope of P.V.C. sheet 5 which is closed by thermal welding along the edges of the block and has openings opposite the ends of the tube 4. The sheet 5 could however be inserted into the mould prior to casting.
Patent GB-341629-A (GB)
Title: Improvements in or relating to gramophone and the like sound record pick-up devices
IPC: H04R11/08
Filed: 1929-11-21
Abstract: 341,629. Gramophone pick - ups. HUGHES, A., 27, Hawthorne Road, Hillsboro', Sheffield. Nov. 21, 1929, No. 35549. [Class 40 (iv).] A gramophone pick-up comprises a telephone receiver C which is secured by a bar A2 and nuts A4 on screwed studs A3 to a base base member A, adapted for attachment to the tone arm &c. Rubber &c. pads D, D1 are provided between the receiver and the base A and bar A2 respectively. The diaphragm C<1> of the receiver, which may either be of magnetic material or of non-magnetic material with an armature secured thereto, is in adjustable contact with the end of a screw B4 threaded through the upper end of a stylus bar B2 which is carried on a bracket arm B secured by screw B1 to the base A. According to a modification, the base A may be formed as a cup-shaped member, the receiver C being held therein by radial screws. Specifications 16149/15 and 145,805, [both in Class 40 (ii), Phonographs &c.], are referred to.
Patent GB-757237-A (GB)
Title: Improvements in or relating to electrical contact devices movable axially along current-carrying coils
Inventor: GRAY JOHN
IPC: H01F29/06
Filed: 1953-12-22
Abstract: 757,237. Collectors. BRENTFORD TRANSFORMERS, Ltd. Dec. 7, 1954 [Dec. 22, 1953], No. 35660/53. Class 38 (1). A control device movable axially of the coil 1 of a voltage regulator comprises a pair of carbon rollers 6 rotatably mounted on pins 7 extending laterally from a block 8 having trunnions 9 extending at right angles to the pins 7. These trunnions are rotatable in bearings 10 carrying pins 11 which slide in bearings 12, the pins being surrounded by springs 14 which urge bearings 10, 12 apart. The rollers are thus pressed on to the winding by springs 14 and are pivotable in the bearings 9 to equalize the contact pressure between them. The bearings 12 are carried by plates forming part of a carriage 2 movable along a shaft 3. Reference has been directed by the Comptroller to Specification 660,247.
Patent GB-1400523-A (GB)
Title: Axial blast nozzle for a compressed gas electric circuit-breaker
IPC: H01H33/70
Filed: 1972-07-31
Abstract: 1400523 Gas-blast switches MAGRINIFABRICHE RIUNITE MAGRINI-SCARPA E MAGNANO-MSM SpA 31 July 1972 [30 July 1971] 35713/72 Heading H1N A blast nozzle for a gas-blast switch is internally shaped to provide a first zone 1 which is of substantially truncated conical form and convergent, a second zone 5 which is convergent and of substantially truncated conical form with a small cone angle, and a third zone 9 which is of substantially truncated conical form and divergent, radial holes 6 being provided in the wall of the nozzle in the second zone. A plurality of annular grooves 13 of triangular cross-section may be provided in the wall of the nozzle in the third zone.
Patent GB-1447644-A (GB)
Title: Elastomeric polyurethanes
IPC: C08G18/46
Filed: 1973-07-27
Abstract: 1447644 Polyurethanes IMPERIAL CHEMICAL INDUSTRIES Ltd 19 Sept 1974 [27 July 1973] 35838/73 Heading C3R Polyurethanes are prepared by reacting (a) 1 molar proportion of a linear polyester derived from dicarboxylic acids and diols of which from 10 to 40 molar per cent of the total acid and diol is aromatic, heterocyclic and/or cycloaliphatic in nature, (b) 1 to 8 molar proportions of a compound having a MW up to 250 and two groups reactive with isocyanate groups and (3) an aromatic diisocyanate sufficient to provide 0À9 to 1À1 NCO groups for each NCO- reactive group present in compounds (a) and (b). The polyurethanes may be prepared using one-shot or prepolymer techniques, optionally in the presence of organic solvents. In examples, bis(4-isocyanatophenyl)methane is reacted with polyesters drived from adipic acid. phthalic anhydride and ethylene glycol to form prepolymers which are then reacted with 1,4- butane diol. The polyurethanes find particular application as adhesives and coatings.
Patent GB-1279241-A (GB)
Title: Improvements in or relating to machine tools
Inventor: GALE PETER CHARLES
IPC: B23B31/26
Filed: 1968-07-26
Abstract: 1279241 Milling machines; spindles; drilling machines CINCINNATI MILACRON Ltd 4 Sept 1969 [26 July 1968] 35922/68 Headings B3B B3C and B3K  A machine tool, e.g. a milling or drilling machine, has a main spindle 11 with drive means 14, and a tool holder 20 having a socket for a cutting tool the toolholder being supported coaxially with the main spindle in bearings 19 which are supported in an annular capsule 23 itself received in a tapered socket 16 of the main spindle 11. Secondary drive means are provided for driving the toolholder at a speed different from that of the main spindle, the secondary drive means comprising a secondary drive shaft 30 supported on bearings 32, 33 within the spindle 11 and driven alternatively in forward or reverse directions by gearing 50, 52, clutch means 57 gears 61, 40 or by gearing 50, 52, 53 further clutch means 57 and gears 62, 40, drive being taken from the main spindle at a gear member 36. Alternatively the secondary drive means for the toolholder may comprise a separate drive source such as a pneumatic, hydraulic or electric motor. The capsule 23 and toolholder 20 form a removable attachment removal of which allows the insertion of a tool in the main spindle 11 in conventional manner.
Patent GB-801490-A (GB)
Title: Improvements in or relating to transistor amplifiers
IPC: H03F1/48
Filed: 1955-12-15
Abstract: 801,490. Transistor amplifying circuits. TELEFUNKEN G.m.b.H. Dec. 15, 1955 [Dec. 16, 1954], No. 35964/55. Class 40 (6). In a common emitter circuit a negative feedback resistor R1 is inserted in the emitter lead to maintain more nearly constant the ratio of collector current to base voltage. The base of the transistor is returned to ground through a resistor R2 to maintain the effective resistance between base and earth constant. This resistor may be partly or wholly the output resistance of the driving source. The resistor R1 may be part of the emitter stabilizing resistor.