baber/WOPTO huggingface dataset:
Patent GB-643139-A (GB)
Title: Improvements in or relating to rotary toolholders, particularly dentists' handpieces
IPC: A61C1/14
Filed: 1947-09-24
Abstract: A rotary toolholder comprises a body, a rotary spindle mounted therein and carrying a tool-receiving chuck having a manually operable portion, a tubular control member which normally enshrouds said chuck and a disconnectible clutch device interposed in the drive to the spindle, the control member being axially slidable to uncover the manually operable portion of the chuck and being operatively connected to the clutch device to disconnect the latter whenever the said manually operable portion of the chuck is uncovered.  The subject-matter of this Specification is identical with that described in Specification 643 085, but the claims are confined to the foregoing invention.  Specification 643,140 also is referred to.
Patent GB-1036673-A (GB)
Title: Improvements in coated lead compounds
Inventor: BARROW THOMAS RICHARD
IPC: C08K9/04
Filed: 1964-06-29
Abstract: A powdered lead salt of a carboxylic acid, e.g. lead salicylate and stearate, is coated with a liquid plasticizer by agitating an aqueous suspension of the powder with the liquid plasticizer. The product is dustless and suitable as a stabilizer for synthetic thermoplasts. Mineral oil, and esters of phthalic and adipic acids are mentioned as suitable plasticizers.ALSO:Stabilizers for synthetic thermoplasts, e.g. polyvinyl chloride comprise powdered lead salts of carboxylic acids, e.g. monobasic lead salicylate and lead stearate made dustless by coating the powdered salt with a liquid plastcizer. The powder is agitated in aqueous suspension with the liquid plasticizer, e.g. mineral oil, and esters of phthalic and adipic acid.
Patent GB-625127-A (GB)
Title: Improvements in power supply means for electric circuits comprising thermionic apparatus
IPC: H02J9/06
Filed: 1946-09-06
Abstract: 625,127. Electricity supply. GENERAL ELECTRIC CO., Ltd., and OLLERENSHAW, C. Sept. 6, 1946, No. 26830. [Class 38 (iv)] Substituting sources in service.-The supply of current to thermionic apparatus is maintained, when an A.C. source fails, by connecting a vibrator converting unit to supply the load from a stand-by battery through a rectifier. Terminals 10, 11, supplying high and/or lowtension current to one or more thermionic valves are normally connected through a rectifier 12 and contacts A2, A3 of a relay or alarm device to A.C. supply terminals 13, 14. On cessation, or sufficient drop in voltage, of the A.C. supply the relay A releases and connects a trickle-charged battery 15 through contact A1 to a vibrator 16 which in the released position of contacts A2, A3, supplies the rectifier 12. In an alternative arrangement the vibrator is connected permanently through a separate rectifier to the terminals 10, 11. To increase the speed of change-over the actuating coil 20 of the vibrator may receive a starting surge by being connected in series with a metal filament lamp or other device 19 having a low resistance which increases later, or by using a vibrator with a frequency higher than (say twice) that of the supply mains, or by both means. The relay actuating circuit may be as described in Specification 625,128, [Group XXXVII].
Patent GB-993171-A (GB)
Title: Method of and apparatus for bending tubes, bars or the like
IPC: B21D7/024
Filed: 1962-07-12
Abstract: 993,171. Bending. HILGERS MASCHINEN-UND APPARATE BAUANSTALT m.b.H. July 12, 1962 [July 21, 1961], No. 26833/62. Heading B3E. A method of bending tubes, bars or the like comprises clamping the forward end of the tube, nearest the bending tool, to the tool and entraining it thereby during the rotational movement which causes the bending, the rear straight portion of the tube being subjected to the action of a force which acts in the longitudinal direction of the said portion in the direction towards the bending tool, the magnitude of the said force, or of the pressure caused thereby in the tube, being varied during the course of the bending operation. A tube 16, which may be fitted over a mandrel 15, is clamped at its forward end to a former 10 by an hydraulic device 12. A slide 13 presses the tube 16 against the former 10 as the former 10 rotates, and the tube bends therearound. The rear of the tube is clamped between toggle operated jaws on a slide 19 moved along a guide rail 18 towards the former 10, during bending, by hydraulic cylinder means 23. The slide 19 carries a cam 25 which acts on a valve 26 in discharge duct 27 of the cylinder 23 so that pressure applied by the cylinders 23 decreases as the bending operation progresses.
Patent GB-1474545-A (GB)
Title: Penicillin and cephalosporin cleavage process and compounds useful therein
IPC: C07D499/12
Filed: 1974-06-12
Abstract: 1474545 Isoimido cephalosporins and penicillins ELI LILLY & CO 12 June 1974 [18 June 1973] 26839/74 Heading C2C Novel compounds of the Formula (II) in which R and R a  are hydrogen, or R and R a  taken together with the carbon atoms to which they are attached represent an ortho-phenylene ring; Z is R 1  is H or a carboxy protecting group; and R 2  is H, acetoxy, methoxy, methylthio, (5-methyl- 1,3,4 - thiadiazol - 2 - yl)thio or (1 - methyl- 1H-tetrazol-5-yl)thio, may be obtained by dehydrating an amic acid of the Formula (I) The isoimido function of (II) may be cleaved by (1) reacting II with up to one equivalent of a hydrazine R 3 NHNHR 4  in which R 3  and R 4  independently are H or CH 3  per equivalent of the isoamide; and (2) (a) reacting the mixture from (1) with an acyl halide to yield the corresponding 7-acylamido cephalosporin or 6- acylamido penicillin; or (b) when at least one of R 3  and R 4  is methyl, recovering the 7- amino cephalosporin or 6-amino penicillin from the reaction mixture of (1); or (c) when R 3  and R 4  are hydrogen, heating the reaction mixture from (1) to 50 to 100 C. to form the amino compound; or (d) when R 3  and R 4  are H, reacting the mixture from (1) with acid to yield the corresponding amino compound in the form of its acid addition salt.
Patent GB-1063193-A (GB)
Title: Ceramic product
IPC: C04B35/19
Filed: 1965-06-24
Abstract: A ceramic product with a coefficient of thermal expansion not greater than 1 x 10-in/in/ DEG C. is produced by sintering a mixture comprising 40-60% by weight clay and 60-40% spodumene of - 100 mesh (U.S. Standard) at an Orton cone below the melting point of the mass. The product, having an oxide analysis 3-5% Li2O, 27-38% Al2O3, and 58-70% SiO2, shows by X-ray diffraction a mullite content of 14-36% and b -spodumene solid solution containing 6-8 mols. SiO2 : 1 mol. Li2O : 1 mol. Al2O3.  The clay used has an Al2O3: SiO2 molar ratio from 1 : 2, as in Georgia kaolin, to 1 : 4, as in ball clay, and the spodumene initially analyses 4 SiO2: 1 Li2O: 1 Al2O3.
Patent GB-1131752-A (GB)
Title: Improvements in or relating to cranes suitable for dockside use
Inventor: INGRAM DAVID JOHN
IPC: B66C19/00
Filed: 1966-06-16
Abstract: 1,131,752. Overhead cranes for unloading ships. GENERAL ELECTRIC CO. Ltd. 13 June, 1967 [16 June, 1966], No. 26978/66. Heading B8B. A dockside crane has a cantilevered portion of crab-supporting boom 16 which is supported by pivoted uprights 13 so that it can be swung upwards about a point A to clear ships' superstructures. The crane runs on rails 19 and the crab supports a container lifting frame 17. The control cab is mounted on the crab and the boom section 15 cannot be raised until the crab is on the fixed section 12. To this end the controls for raising the boom may be mounted on the fixed section or interlocks may be provided. The crane is operated by hydraulic motors supplied by a constantly running electric motor.
Patent GB-815045-A (GB)
Title: Finned projectile
IPC: F42B12/10
Filed: 1957-08-27
Abstract: 815,045 Hollow charge projectiles. ANSTALT FUR DIE ENTWICKLUNG VON ERFINDUNGEN UND GEWERBLICHEN ANWENDUNGEN ENERGA. Aug. 27, 1957 [Sept. 12, 1956(2)], No. 27014/57. Class 9(1) A hollow charge projectile, fin-stabilized and of ogival shape at both ends, is closed at the forward end by an ogival ballistic cap. This cap has a hollow rear portion 2b and a solid front portion 2a through which extends an axial passage 2c housing a nose percussion fuze 1. Extending through the passage 2c is a sleeve 4 containing an explosive column 3a, 3b. The projectile casing 5, which is provided with a driving band 6, houses a charge 7 with a conical metal liner 8 beyond the vertex of which a detonator (not shown) is embedded in the charge 7. The cap 2a, 2b may be made in one piece of mild steel or brass, or may be in two separate parts, Fig. 3, the part 2a being of lead or lead alloy and the part 2b, which is of stronger material has a shoulder 14 to engage the part 2a. A sleeve 16 carrying the fuze 1 and passing through the part 2a is screwed into an extension 15 of the part 2b to hold the parts together. In Fig. 1, the extension 3b of the explosive column is of reduced diameter and passes through a centring element 11. The part 2a may have an insulating covering which carries the fuze and is crimped or otherwise secured to the part 2b. The explosive column may be omitted, the fuze then including a primer to transmit combustion to the detonator. The explosive 3a, 3b may be penthrite or hexogen. The part 2a may contain a smoke-producing, incendiary or toxic charge.
Patent GB-915170-A (GB)
Title: Semiconductors
IPC: B60T13/68
Filed: 1960-08-04
Abstract: 915,170. Arc torches. WESTINGHOUSE ELECTRIC CORPORATION. Aug. 4, 1960 [Aug. 14, 1959], No. 27016/60. Class 39 (3). [Also in Groups II, XVI and XXXVI] A plasma jet generator, Fig. 1, for use in the manufacture of semi-conductor devices (see Group XXXVI) consists of a gas ionisation chamber 12 and an orifice chamber 14. The chamber walls are of copper, aluminium, graphite or steel but may include parts coated with or formed of ceramic or plastics material. Inert gas introduced under pressure via tube 34 is ionised by an electric arc struck between the edges of aperture 20 and an electrode 24 of tungsten, silver, carbon or alloys or mixtures thereof. The walls of chamber 12 which may be fluid cooled via coil 42 are insulated from the electrode at 26 and the orifice chamber at 27 by ceramic, or filled or unfilled rubber or polytetrafluorethylene. Material in the solid state may be introduced into the plasma jet from one or more containers 40.
Patent GB-748377-A (GB)
Title: Improvements in hand carriers or trucks
IPC: B62B1/10
Filed: 1953-10-02
Abstract: 748,377. Hand trucks. ROTHWELL, R. J. Jan. 3, 1955 [Oct. 2, 1953; July 5, 1954], Nos. 27022/53 and 19579/54. Class 108 (1). A truck comprises a loop portion 1 which may be bridged by a strip 4 carrying a wheeled axle 6, and a handle portion 2 and strut 10, both of which may be pivoted to the loop portion. The loop portion may be adapted to carry up to four buckets and the forward end 1a upturned to facilitate loading a sack on to the truck. The axle support and the strut may be formed integrally with the loop portion and handle.
Patent GB-759438-A (GB)
Title: Improvements in or relating to liquid filters
IPC: B01D37/02
Filed: 1954-09-17
Abstract: 759,438. Filters. VILLETTE, G. Sept. 17, 1954 [Sept. 18, 1953], No. 27024/54. Class 46. In a filter for liquids comprising a series of parallel filter elements 28 covered by a single folded piece of filter fabric 23 having adjacent side edge parts secured together alongside the filter elements, said elements and associated fabric can be swung outwardly of the casing 11 about an axis parallel with the folds in the piece of filter fabric. In Figs. 1 and 3 the filter comprises a perforated circular plate 21 to which are hinged at 33 three filter elements 28 formed by perforated tubes 22 assembled by rods 31 and surrounded by the filtering cloth 23, the covered elements forming three filter panels. The filter is housed in the casing 11 by means of a perforated cylinder 26 having centring studs 27, a packing 25 forming a collector 18 below the plate 21 for the filtered liquid. The liquid to be filtered arrives under pressure at the inlet 12, passes through the filter cloth, through tubes 22 and plate 21 into the collector 18 and thence to the outlet 13. The filtering surface may be coated with a filtering aid. To clean the filter, lid 14 and cylinder 26 are removed and the filter then extracted by means of articulated lifting rods 24. One of the rods is inclined and the outer face of the first panel is washed with a stream of water. This panel is then turned down like the page of a book in order to render opposite faces of the first and second panels accessible to the jet of water. The second panel is turned down and the operation continued. A tap 17 is provided for draining purposes prior to removing the filter. Other methods of articulation may be employed instead of the hinges 33. In other embodiments the necessity for the cylinder 26 and the packing arrangement of Fig. 1 are dispensed with.
Patent GB-434158-A (GB)
Title: Diazo-preparations
IPC: C07C233/00
Filed: 1934-09-20
Abstract: Diazo-preparations are made by salting out from its aqueous solution a mineral acid salt of a diazo-compound of the general formula <FORM:0434158/IV/1> in which x and y=halogen, alkyl- or alkoxy and the acyl residue contains an aromatic nucleus.  In examples (1)--(3) the diazohydrochlorides of the following amines are prepared: 4-phenoxyacetyl- and -(1<1>-methyl)-phenoxyacetyl - amino and 4-(1<1>-, 2<1>- or 3<1>-chloro)-phenoxyacetylamino - 2 : 5 - dimethoxy- or diethoxy - 1 - aminobenzene, 1 - amino - 2-methoxy-5-methyl-, 1-amino-2 : 5-dimethoxy- or diethoxy-, 1-amino-2-methoxy-5-chloro- and 1 - amino - 2 - chloro - 5 - methoxy - 4 - benzoylaminobenzene; (4) the diazo sulphate of 1 - amino - 2 - methoxy - 5 - chloro - 4 - benzoylaminobenzene is described.  The Specification as open to inspection under Sect. 91 comprises examples of the preparation of the diazohydrochlorides of 1-amino-2 : 5-dichloro - 4 - benzoylaminobenzene and 4-(2<1>-methyl)-phenoxyacetylamino - 2 : 5 - dimethyl-1-aminobenzene. This subject-matter does not appear in the Specification as accepted.
Patent GB-656270-A (GB)
Title: Means for indicating or controlling small angles of rotation of a shaft
Inventor: WIGAN EDMUND RAMSAY
IPC: G01L3/04
Filed: 1948-10-18
Abstract: 656,270. Electric indicating and control systems. NATIONAL RESEARCH DEVELOPMENT CORPORATION. Oct. 18, 1948, No. 27069. [Class 40 (i)] A limited angular displacement between two rotatable members is measured or controlled by coupling the members by a sine spring, as described in Specification 617,076, [Group XXXII], so that the stiffness of the spring varies with relative angular displacement, causing the spring to vibrate and using means responsive to the frequency of vibration to indicate or control the angular displacement. The device is useful for torque measuring or controlling, and torque amplification. The sine spring 4, Fig. 4, which is normally straight, is stressed to the shape shown by rotating clamping members 1, 2, rotatably mounted in a base-plate 3, through arms 5, 9 and connecting the arms by a rigid link 10, so that subsequent limited rotation of either member 1, 2 or movement of the link 10 will vary the stiffness of the spring. For measuring the angular displacement between coaxial shafts 2a, 11, Fig. 5, the shaft 2a is linked to a frame 12 carried by shaft 11 through a sine spring 4a stressed as in Fig. 4 by means of linkage (not shown). For continuous rotation the frame 12 is balanced as at 13, 14. The spring is then vibrated and the vibrational frequency measured in any known manner to indicate the angular displacement. The difference of this frequency from a predetermined frequency may form the error signal for a positional " zero " system wherein shaft 11 is caused to follow up shaft 2a with torque amplification, or the frequency difference could be used for controlling the angular displacement. For measuring the torque transmitted by a shaft 2b, Fig. 6, a sine spring 4b, as shown in Fig. 4, couples the sleeve 19 rigid with the shaft to a flange 15 carried by a sleeve 17 secured to the shaft at 18 and the vibrational frequency of the sine spring is measured as before to indicate the torque transmitted. In another arrangement the sine spring 4d, Fig. 7, stressed as in Fig. 4, is carried between clamps 1c, 2c rotatable in a flange 26 rigid with shaft 23. When torque is transmitted from shaft 23 through the frame members 26, 25 to shaft 24 the sleeve 28 secured at its upper end to shaft 23 rotates the pinions 30, 31 according to the torque to vary the stiffness of the spring. The spring is vibrated by coaxial electromagnets 20a, 21a, the iron circuit of which is completed by an armature 22a on the spring and by the frame members 25, 26, the electric circuit including interrupter contacts operated by the spring. The electrical frequency may then be measured in known manner and is a measure of the torque transmitted. The oscillation maintaining means is preferably used with an amplifier, the gain of which falls rapidly with excessive amplitude of vibration.
Patent GB-625129-A (GB)
Title: Improvements in inflatable dinghies and like craft
IPC: B63B7/08
Filed: 1946-09-10
Abstract: 625,129. Inflatable dinghies. R.F.D. CO., Ltd., and WILLIAMS H. M. L., and WILLIAMS, R. L., [Representatives of WILLIAMS, P. W. L.]. Sept. 10, 1946, No. 27146. [Class 113 (ii)] In a dinghy having an inflatable gunwale 12 of circular, boat-shaped or like plan formation adapted when inflated to support a tensioned bottom sheet 11, and having attached to and disposed around the bottom a plurality of inflatable tubular gas containers 10, the latter are disposed in relative parallel arrangement at spaced intervals from the gunwale and are of increasing cross-sectional area from the outermost to the innermost tube to provide an inclined seat for the occupants. As described, the tubes 10 may be formed from one or more sheets of indiarubber fabric secured at and possibly intermediate their edges to the bottom so as to form a plurality of separate tubes when inflated. The Provisional Specification also described an arrangement in which a single inflatable tube is disposed spirally around the bottom sheet.
Patent GB-296912-A (GB)
Title: Improvements in apparatus for the manufacture of concrete building blocks and the like
IPC: B28B1/087
Filed: 1927-10-13
Abstract: 296,912. Shakespeare, J. Oct. 13, 1927. Moulds: shaking and jigging machines.-In machines wherein a mould is reciprocated by cam mechanism to compact the material, two or more cams are adapted to co-operate with a metal bar attached to the mould box and means are provided to hold down the mould during ejection of the blocks. As shown, the mould 5 is carried by bearers 3, 4 guided upon rods 2 on the frame 1 and is reciprocable vertically by cams 17 on a shaft 16 engaging a rod 14 carried by brackets 12 secured to the bearers 3. The shaft 16 is furnished with fast and loose pulleys 18, 19 controlled by a beltshifter 21 which is connected through cranked levers 24 and links 23, 64 to hooks 25 in such a manner that upon stoppage of the shaft 16 the hooks 25 engage over the ends of the rod 14 to hold down the mould during ejection of the finished blocks. Ejection is effected by rods 30, 31 passing through guides 28, 29 and connected by members 33 furnished with pulleys 36 around which pass ropes &c. 44 anchored at each end to the framework and passing also around pulleys 42 on arms 40 secured to a shaft 37 operable by a hand-lever 43. Rubber buffers 11 are interposed between the frame and mould box. The mould 5 is furnished at its upper edge with a tray 45 for the material and is fitted with suitable pallets, partitions &c. which are positioned by projections and recesses in the mould walls. Fig. 7 shows a mould for reinforced blocks having ribs 57 to position grooved liners 54 and members 62 and grooves 63 to receive spacers 61.
Patent GB-722388-A (GB)
Title: Improvements in or relating to fuel injection pumps for internal combustion engines
IPC: F02M59/18
Filed: 1952-10-29
Abstract: 722,388. Regulating. VANNI, P. G. Oct. 29, 1952, No. 27201/52. Class 7 (6). [Also in Group XXVIII] The piston 2 of a fuel injection pump is actuated on its suction stroke by a cam 10, acting through a lever 9, and on its delivery stroke by a spring 8 ; the plate 12 is damped at the end of its stroke by entering a recess 13. The delivery of the pump is controlled by a raised portion 4 on the piston co-operating with the inlet port and is adjusted by rotating the piston by a rack 6 and pinion 5 actuated by a spring-loaded diaphragm 16 subjected to the pressure in the air induction pipe of the internalcombustion engine, e.g. a two-stroke petrol injection engine, to maintain constant the fuel/air ratio ; a rotary valve may be provided to permit the diaphragm to be subjected to pressure during the suction stroke of the engine only. Fig. 3 shows a modified pump in which the inlet port 29 is controlled by an additional piston 30 so that the inlet is opened during the whole of the suction stroke of the pump piston 31 : a by-pass port 28 is provided.
Patent GB-1146839-A (GB)
Title: Improvements in or relating to vacuum valve actuators
IPC: G05D23/20
Filed: 1966-06-17
Abstract: 1,146,839. Fluid-pressure servomotor systems. DOLE VALVE CO. June 17, 1966 [July 28, 1965], No.27238/66. Heading G3P. [Also in Division F1] An actuator comprises a valve section 37 and an actuator section 10, two passageways between the valve and actuator sections with means for separately connecting each passageway with a vacuum source and to atmosphere, and a movable diaphragm 25 separating the actuator section into two air-tight chambers 16, 17. The means consists of a pair of valve members 47, 48 interconnected by a spring 51 and actuated by solenoids to connect each chamber either to an atmospheric vent 66 or 67 or to a vacuum source 43, such as a vehicle engine intake manifold. A shaft 30 couples the diaphragm to a pivoted valve 82 for varying the proportion of hot to cold air admitted to the interior of the vehicle. A variable resistor 88 provides a feedback signal to temperature sensors and an amplifier controlling energization of the solenoids. The diaphragm has a bead 24 clamped between annular grooves in separate halves of the actuator section and a central plate 29 coupling it to the shaft 30 which is retained in its adjusted position by frictional engagement with a resilient seal 33. The actuator sections are connected by C-clamp 26.
Patent GB-1172719-A (GB)
Title: A Process for Improving the Processability of Textile Fibres.
Inventor: CARTER HARRY
IPC: D06M13/144
Filed: 1967-06-13
Abstract: 1,172,719. Polyethers. SHELL INTERNATIONALE RESEARCH MAATSCHAPPIJ N.V. 30 May, 1968, [13 June, 1967], No. 27256/67. Heading C2C. [Also in Divisions C5 and D1] Compounds suitable for use in the treatment of textile fibres are produced by reacting in the presence, as catalyst, of potassium hydroxide, a mixture of monohydric saturated aliphatic primary C 12 , C 13 , C 14  and C 15  alcohols containing above 72% by weight of linear straight chain alcohols, the remainder being branched chain alcohols and the weight ratio of C 12 , C 13 , C 14  and C 15  alcohols in the total product being about 2: 3: 3: 2, with a mixture of 1,2- propylene oxide and ethylene oxide in the weight ratio of 49 : 51 so that the resulting condensation product contains 4À3 moles of condensed 1,2-propylene oxide and 5À8 moles of condensed ethylene oxide per mole of alcohol, or with propylene oxide so that the resulting condensation product contains 5 moles of 1,2 propylene oxide per mole of alcohol.