baber/WOPTO huggingface dataset:
Patent GB-1397109-A (GB)
Title: Cold pressure welding tool
IPC: H01R43/02
Filed: 1972-12-21
Abstract: 1397109 Welding by pressure KELSEYHAYES CO 21 Dec 1972 [12 Jan 1972] 33104/73 Divided out of 1397108 Heading B3R The subject matter of this Specification is substantially the same as that described in Specification 1,397,108 but the claims are concerned with a cold pressure welding tool comprising first die means, second die means, a first housing member supporting the first die means, a second housing member supporting the second die means, each of the housing members having an opening formed therein with the first and second die means received in the openings, means for moving the first and second die means into gripping engagement with first and second pieces to be welded and for moving the first and second die means to upset the ends of the gripped pieces and means for pivotally connecting the housing members together for movement between a closed position in which the first and second die means coact to effect gripping and upsetting of the workpieces and an opened position in which the first and second die means may be removed from the housing members.
Patent GB-537667-A (GB)
Title: Improvements in and relating to the pulping of soft and semi-soft substances
IPC: A47J19/02
Filed: 1939-12-30
Abstract: 537,667. Centrifugal pulping machines. BAKER, B. D., and BAKER PERKINS, Ltd. Dec. 30, 1939, No. 33117. [Class 23] A pulping machine has two or more perforated cylindrical drums 3 mounted concentrically within one another, and having their bases 4 held by pins 5 in driving association with the plate 2 on the shaft of the motor housed in the casing 13. The upper ends of the drum walls are seated freely in recesses in the cover plate 9, which carries the feeding hopper 10, and is detachably secured to the casing 1 by clip fasteners 11. Stationary scrapers 8 are supported by the cover plate 9 and these co-operate with each drum surface. The perforations or meshes of the drum walls may be of smaller size progressively in the outer drums. The material is fed into the innermost cylinder from the hopper 10 andas the drums rotate it passes through the perforations while it is crushed between the scrapers 8 and the walls. It emerges finally by the outlet 12.
Patent GB-604884-A (GB)
Title: Improvements in preparation of 5-diethylamino-2-pentanone
Filed: 1945-12-07
Abstract: 5 - Diethylamino - 2 - pentanone is prepared by heating a mixture of acetyl-propyl chloride and diethyl amine, said mixture containing not more than 0.5 per cent by weight of water.  The free amines may be liberated by treating the reaction mixture with aqueous alkali metal hydroxide.  In an example, 22 mols. of diethylamine are heated with 10 mols. of acetylpropyl chloride and the free amines liberated by adding an aqueous solution of sodium hydroxide to the reaction mixture when the solution separates into two layers.  The upper layer is withdrawn and fractionated to yield the 5-diethylamino-2-pentanone.  Some methyl cyclopropyl ketone may also be recovered and this may be reconverted to acetylpropyl chloride by treatment with hydrochloric acid and the latter may then be re-used. In an alternative method of separation, the mixture after adding the aqueous sodium hydroxide solution is fractionated to remove excess diethylamine, the residue being then allowed to separate into two layers and the upper layer fractionated.
Patent GB-410521-A (GB)
Title: Improvements in taps and valves
IPC: F16K1/02
Filed: 1932-11-24
Abstract: 410,521. Screw-down valves. ABREY, R. H., 58, Picardy Road, Upper Belvedere, Kent. Nov. 24, 1932, No. 33186. [Class 135.] Relates to valves, taps, fausets, &c. of the kind in which the valve spindle is operated by aggregate screw-thread action. The valve spindle 20 carries projections 29 engaging slots in a bushing which it closely fits and which is screwed into the top body and has a screwed extension 37. A screw-thread 24 of opposite hand is formed on the spindle 20. The threads 37, 24 are engaged by corresponding threads on handle member 32 which encloses the upper end of the spindle 20. The extension 37 of the bushing 11 may be internally threaded to engage an external thread on the handle 32.
Patent GB-1217803-A (GB)
Title: Improvements in and relating to the welding of metal wheels
IPC: B60B23/00
Filed: 1969-07-01
Abstract: 1,217,803. Making wheels; altering physical properties; welding by pressure. MICHELIN & CIE (Compagnie Generale des Etabs. Michelin). 1 July, 1969 [2 July, 1968; 22 May, 1969], No. 33256/69. Headings B3A, B3R and B3V. Weld spots 8 attaching a rim 1 to the disc 6 of a wheel are strengthened by the application of pressure to the spots which relieves residual tensile stress resulting from cooling the fused metal. The pressure may be applied to cold or heated metal by punches 15, Fig. 3, or rollers, Fig. 4 (not shown), which have a permanent imprint in at least one of the parts. A single imprint may cover one, two or more spots, and the rollers may impress a continuous imprint around the circumference of the work. A punch may be used which impresses a triangular or circular recess (13), Fig. 2 (not shown), about a weld spot (8).
Patent GB-447758-A (GB)
Title: Improvements in or relating to telephony
IPC: H04B3/36
Filed: 1934-11-19
Abstract: 447,758. Repeaters. NEDERLANDEN, STAAT DER, The Hague. Nov. 19, 1934, No. 33263. Convention date, Nov. 29, 1933. [Class 40 (iv)] [See also Group XL] A high-frequency pentode is employed as the output valve of a repeater. In the two - way repeater shown (which amplifies in one direction only) the valve 2 amplifies signals from one pair of a four-wire circuit and passes them on to the two-way line 3, but not to the other pair 12 of the four-wire circuit owing to the effect of transformer 7 and balancing impedance 9. Reverse retroaction may be provided to make the gain of the repeater less dependent on fluctuations of the supply and on the age of the valve, as shown in Fig. 2, by means of a resistance 14 common to the grid and anode circuits or by replacing the biassing resistance 13 by a choke shunted by a resistance. Such retroaction may be made dependent on frequency to correct for distortion. The attenuation of the higher frequencies may be compensated by increasing the load impedance at such frequencies. Identical input and output transformers may be used. Specification 304,710, [Class 38 (ii)], is referred to.
Patent GB-1151751-A (GB)
Title: Improvements relating to Electric Motors.
IPC: H02K15/16
Filed: 1966-07-25
Abstract: 1,151,751. Making dynamo-electric machines; jointing by stamping. SIEMENS-SCHUCKERTWERKE A.G. 25 July, 1966 [24 July, 1965], No. 33430/66. Headings B3A and B3Q. [Also in Division H2] A method of making an electric motor comprises introducing the parts into a high-velocity forming apparatus with the aid of gauging means and securing cup-shaped end-shields 5, 6 on the stator 4 in the apparatus. The endshields may be deformed electromagnetically, and the gauging means may comprise pins to set the air-gap between the rotor 7 and stator 4. Extensions of the end-shields house bearings 2, 3 and are deformed (left-hand side of the figure), to secure the bearings, by the apparatus for securing the end-shields. Both end-shields may be secured to the stator at the same time or one after the other. To assist keying, the ends of the stator-laminations may be formed with slots, grooves or apertures, or the end laminations, which may be thicker, may also be larger in diameter than the others. Weld beads may be present. Damping rings or a lubricant may be interposed between the bearings and the end-shield bearing extensions. Angle pieces, flanges, pins, rocking arms or brackets (not shown) pushed under the edges of the end-shields, are also secured by the forming operation. For short motors, the end-shields may be in contact with each other at the motor mid-point. In a further form, Fig. 2 (not shown), the sintered bearing (8) is riveted to the end-shield, and a metal section (10) provides a space for grease or oil-impregnated felt (9). Another construction uses a spherical bearing. Reference has been directed by the Comptroller to Specification 896,923.
Patent GB-856199-A (GB)
Title: Improvements in or relating to apparatus for levelling structures
Inventor: PRYKE FORDHAM
IPC: G01C5/00
Filed: 1955-11-22
Abstract: 856,199. Levelling building structures. PYNFORD Ltd. Feb. 21, 1957 [Nov. 22, 1955], No. 33434/55. Class 20(2) [Also in Group XXIV] In levelling a building by jacks B a wire G stretched between supports E, F1 is lined up with pointers J marking the line of subsidence of the wall and one or both ends of the wire are slowly raised and jacks B are operated to keep pointers J in line with the wire until the building is level. In Fig. 1 only the support F<SP>1</SP> is raised and comprises a vent F<SP>1</SP> on a screwthreaded rotatable shaft F<SP>2</SP>. The shaft may be rotated by an electric motor. Where a building has subsided more in the middle than at the two ends wires are stretched from a support in the middle to supports at the ends. The wire may control the jacks electrically by making and breaking contact for motors driving the jacks, the movement of the wire being damped by a permanent magnet. The shaft may be fixed and the nut in the form of a pulley rotated by a belt which has a tensioning device (see Group XXIV). Specifications 599,317, 629,355, 665,280, 671,312, 757,510 and 765,188 are referred to.
Patent GB-1146159-A (GB)
Title: Tool insert
IPC: B23B29/034
Filed: 1966-07-26
Abstract: 1,146,159. Boring bar inserts. W. MIHIC. 26 July, 1966 [26 Aug., 1965], No. 33446/66. Heading B3C. A boring bar insert comprises a tool 1, and a nut 2 screwed on to the tool and urged against a seating 14 in a bush 3 by springs 6 adjustable by a screw 12, the tool being non-rotatably connected to the bush by a key 5.
Patent GB-1513370-A (GB)
Title: Fluid-pressure operated actuator arrangements
IPC: F15B9/12
Filed: 1974-07-30
Abstract: 1513370 Fluid-pressure servomotor systems LUCAS INDUSTRIES Ltd 9 July 1975 [30 July 1974] 33515/74 Heading G3P A valve 12 controls an output shaft 14 through a rotary device 10 and a reduction gear 15 and is connected to the shaft by a differential feedback mechanism 20, 24, 26 which locks if the valve sticks. A lever 27 by which the valve is adjusted is thus held stationary and the whole of the torque applied to the feedback mechanism is available to free the valve. The lever is normally retained in the position to which it has been moved by frictional forces, represented at 30, and is coupled by resilient means 28, 29 to a carrier 25 for a planent gear 26 which rotates a quadrant or ring gear 20 when the lever is moved, the quadrant adjusting the valve through a cam track 21b and a linkage 22, 23. If the valve sticks during return operation by the feedback mechanism, the carrier 25 is displaced against the resilient means 28, 29 to apply a brake 32, 32 which prevents displacement of the lever 27. The carrier is also displaced against the resilient means if the valve sticks while it is being opened initially by movement of the lever 27, but in this case the brake skids round a track 33 and increased force is applied to the quadrant 20 to free the valve. The valve and actuator may be constructed as rotary devices.
Patent GB-324154-A (GB)
Title: Improvements in indicators for tabulated figures, particularly applicable to calendars
IPC: G09D3/06
Filed: 1928-11-16
Abstract: 324,154. Souvenir Manufacturing Co., Ltd., and Barnes, G. Lawson-. Nov. 16, 1928. Calendars. - A match box, cigarette case, or other flat article is combined with a calendar, comprising a set of date figures marked on the face 1, Fig. 1 of the box, &c. and a set of movable dav names arranged on a septagonal roller 3, Fig. 2 mounted in a U- shaped frame 5 within the box and viewable through a slit 2 in the face 1. Spring clips or tongues are provided to hold the roller in adjusted position the setting being effected at the commencement of each month either by rotating the roller by hand or by manipulation of an external knob on an extension of the spindle. The day names may be arranged in a flexible, band or on a sliding strip.
Patent GB-859580-A (GB)
Title: Production of 12a-deoxytetracyclines
Filed: 1958-10-21
Abstract: The invention relates to 12a-deoxytetracyclines of formula: <FORM:0859580/IV(b)/1> wherein R1 is hydrogen or chlorine, R2 is hydrogen or methyl, and R3 is hydrogen or hydroxy, with the proviso that at least one of the substituents R1, R3 and R3 is hydrogen; and acid addition salts.  They are 12a-deoxytetracycline, 6-demethyl-6, 12a-dideoxytetracycline 7-chloro-6-demethyl -12a-deoxytetracycline, 6, 12a dideoxytetracycline and 6-demethyl-12a deoxytetracycline. They are prepared by contacting the corresponding tetracycline having a 12a-hydroxy substituent with metallic zinc in an aqueous alkaline solution so as to cause reduction of 12a-hydroxy substituent. Aqueous sodium or potassium hydroxide may be used but aqueous ammonia is preferred at pH 10 to 13 containing 10 to 20% ammonia.  The concentration of the tetracycline may be 4% w/v and 2 to 4 parts zinc per part of tetracycline are used.  The temperature is 10-50 DEG C. The 12a-deoxytetracycline is recovered by acidifying the reaction mixture and extracting with a water-imiscible solvent such as ether, methyl acetate, ethyl acetate, methylene chloride or chloroform. Acid salts are prepared by treating the amphoteric compound with an acid, the mineral acids, e.g. hydrochloric, sulphuric, nitric and phosphoric being preferred.  Specifications 845,649, 855,169, 855,170 and 859,581 are referred to.
Patent GB-1131898-A (GB)
Title: Improvements in or relating to polyesters
IPC: C08G63/54
Filed: 1967-07-21
Abstract: 1,131,898. Unsaturated polyester. GELSENBERG BENZIN A.G. 21 July, 1967 [28 July, 1966], No. 33678/67. Headings C3P and C3R. Unsaturated polyester resins are prepared by melt condensing: (a) a mono- and/or bishydroxyalkyl ester of tere- or isophthalic acid, including compounds containing substituted, e.g. haloalkyl groups, with (b) an unsaturated dicarboxylic acid and/or an anhydride thereof and optionally, (c) a glycol other than one defined by (a). Condensation is carried out for a time sufficient to obtain a resin with an acid no. from 20-50 (e.g. from 1 to 8 hours); the mol. ratios are such as to provide at least 1 mol. of OH groups per mol. of total carboxyl groups used in the condensation. Examples of (a) are mono- and/or bis-#- hydroxyethyl, -#-hydroxypropyl, or -2- hydroxy-3-chloropropyl isophthalates or the corresponding terephthalates. Examples of (b) are maleic and fumaric acids. The unsaturated polyester resin may be copolymerized with vinyl monomers, e.g. styrene, acrylates or methacrylates or with alkyd resins to obtain lacquers or shaped bodies.
Patent GB-1004133-A (GB)
Title: Improved jacking frame for prestressed concrete
IPC: E01C7/16
Filed: 1962-09-04
Abstract: 1,004,133. Prestressing concrete slabs; runways and roads. C. H. DARBY. Sept. 4, 1962 [Sept. 8, 1961], No. 33910/62. Headings E1G and E1V. [Also in Division F2] Reinforced concrete slabs for runways, roads and the like, are prestressed by means of a steel jacking frame, comprising a pin-jointed rectangular frame, with each frame member 1-4 having arranged outside it a pin-ended archshaped member 6-9 which is connected to its corresponding frame member by beams 5 pivoted to the frame member and bolted to the arch-shaped member. The longitudinal, 16, and transverse, 14, reinforcing bars or wire strands are stressed simultaneously by hydraulic jacks 18 (Fig. 4) which act between the I-sectioned frame members and J-sectioned beams 12, 13, sliding between adjacent beams 5, to one of which one end of each bar is attached. Bars 14 and 16 pass through the channel-sectioned metal formwork 15 and are connected, at the opposite ends to the beams 12, 13, to the frame members 1 and 4. Fig. 13 shows an arrangement in which reinforced concrete or steel abutments 22 are glued to completed slabs to form anchorages for the arch members 7 and 9. The arch members 6-9 are shown as being centrally pivoted, but they may also be formed from a single, or more than two, sections. Spreaders are employed between frame members 2, 3 and beams 12, 13 to hold the tension on the bars.
Patent GB-760199-A (GB)
Title: Improvements in or relating to processes for the production of an electrically insulating layer on metals and alloys
IPC: H01B3/10
Filed: 1954-11-23
Abstract: In a process for the production of an electrically insulating layer on metals or alloys the surface of the metal parts to be treated is firstly exposed to the vapours of at least one oxidising material (defined as a mixture of oxidising agents plus alkali metal hydroxides, or oxidising agents above) which is solid at room temperature, said exposure taking place in a first heat-treatment chamber from which air is not excluded, at a temperature of 800 DEG - 1200 DEG C., and secondly, the layer formed on the metal surface is brought into its final state in a second heat-treatment chamber at a temperature of 800 DEG  - 1200 DEG C., said second chamber serving to evaporate any residual oxidising material which remains on the surface of the metal parts without having reached therewith, and being otherwise free from the vapours of oxidising materials which are solid at room temperature.  The oxidising material may comprise potassium hydroxide and sodium hydroxide in combination with an oxidising agent, e.g. potassium permanganate, or potassium or sodium peroxide alone.  Chlorates, peroxides, nitrates and/or nitrites or phosphates and/or borates may be added to the oxidising material. The process is stated to be particularly suitable for application to materials, such as wires e.g. for electric heating elements, based on Cr and Ni alone or on alloys of Cr, Ni and Fe with additions such as Ti, W, Mn, Si, Mo, Be and Ce; alloys given by way of example are (a) Cr 18 - 25 per cent, Ni 20 - 80 per cent, Fe remainder (b) Cr 22 - 30 per cent, Al 3 - 5.5 per cent, Fe remainder and (c) Cr 17 - 32 per cent, Si 2 - 4 per cent, Fe remainder.
Patent GB-497882-A (GB)
Title: Improvements in or relating to the manufacture of pipe of soft metal
IPC: B21C25/00
Filed: 1937-12-09
Abstract: A die for use in extruding metals is formed from forged steel containing 3 1/2 per cent of nickel, and the metal for extrusion into pipes may be lead tellurium alloy.
Patent GB-623422-A (GB)
Title: Polymerization of vinyl sulfonic acid and derivatives thereof
IPC: C08F28/00
Filed: 1946-11-18
Abstract: Monomeric vinyl-sulphonic acid and its derivatives are distilled at low pressures in the absence of oxygen.  Derivatives specified include the a -alkyl-vinyl-sulphonic acids, the a -halo-vinyl-sulphonic acids, and the esters, amides and acid halides thereof.  In an example, an HCL-free aqueous solution of vinyl-sulphonic acid obtained from the reaction of ethylene disulphonyl chloride with water was distilled in an apparatus sealed without joints.  Distillation was commenced at atmospheric pressure, the pressure being reduced as the water was distilled off when, with its final removal, the monomer was distilled under a few mms. pressure.  The distillate was sealed in vacuo in the receiver and polymerized by exposure overnight at about 40 DEG  C. to ultraviolet light.ALSO:Discoloration of monomeric vinyl sulphonic acid and its derivatives is removed by distillation at low pressures in the absence of oxygen, and discoloration of the polymer is avoided by retaining the distilled monomer in the absence of oxygen until polymerization has been effected.  Derivatives specified include the a -alkyl vinyl sulphonic acids, the a -halo vinyl sulphonic acids and the esters, amides and acid halides thereof.  In an example, an HCl-free aqueous solution of vinyl sulphonic acid obtained from the reaction of ethylene disulphonyl chloride with water was distilled in an apparatus sealed without joints. Distillation was commenced at atmospheric pressure, the pressure being reduced as the water was distilled off when, with its final removal, the monomer was distilled under a few mms. pressure.  The distillate was sealed in vacuo in the receiver and polymerized by exposure over night at about 40 DEG  C. to ultra-violet light.
Patent GB-396269-A (GB)
Title: Improvements in or relating to centrifugal machines for the manufacture of hollow bodies of cement, concrete or the like
IPC: B28B21/30
Filed: 1932-12-03
Abstract: 396,269. Centrifugal moulding of long pipes, columns, &c. EBERLEIN, H. and SCHLOSSER, J., (trading as OTTO & SCHLOSSER), 18, Elbstrasse, Meissen, Germany. Dec. 3, 1932, No. 34279. [Class 87 (ii).] Comprises means for locking a long, heavy centrifugal mould 1 to the rotary heads 2 carrying the supporting rollers. Each head is furnished with pairs of rollers 8, 10 arranged on axes set at 120 degrees to one another to give a three-point-roller support to the mould while it is rotated by belts 11. In addition, as such moulds are usually conical for producing tapered posts, the framework carrying the heads is braced by brackets 12 to take the axial thrust. Rollers 4 carried on bell-crank levers operated by a common shaft 6 carrying a handwheel 7, can be raised to support the mould while it is run into or out of the machine. The clamping-means are arranged in the enlarged portions at each end of the rotary heads 2 and comprise three pairs of curved arms set at equal distances round the circumference of the head. One pair 151, 1511 is pivoted together at b, the other end of the member 151 being pivoted to the head at a and the other end of the member 1511 connected to a ring 18 at c which can be rotated by the worm gear 20 until the curved arms grip any size of mould at two points. The other two pairs of members are similarly arranged so that the rotation, of the ring results in a six-point grip on the mould.
Patent GB-1347857-A (GB)
Title: Method and apparatus for d'sulphurizing exhaust gas
IPC: B01D53/86
Filed: 1971-07-21
Abstract: 1347857 Desulphurizing exhaust gases HITACHI Ltd 21 July 1971 [29 July 1970] 34282/71 Heading C1A The sulphur oxides in an exhaust gas are absorbed on active carbon, the absorbed oxides being washed from the carbon in the form of dilute sulphuric acid which is concentrated by heat exchange with part of the exhaust gas branched off from the main stream, the thus cooled gas in the branch stream being reconnected to the main stream to adjust the temperature thereof and the gas stream so formed is passed into the absorption towers containing activated carbon. By this means the temperature of the mixed gases entering the absorption towers is adjusted to 100-150‹ C., and the treated gas which is released to the atmosphere has a temperature above 100‹ C., thus facilitating its spreading in the atmosphere. Preferably the flue gas is first contacted with more concentrated acid in a first concentrator and then the partially cooled flue gas is contacted with more dilute acid.
Patent GB-803284-A (GB)
Title: Improvements in or relating to telephone transmitters
Inventor: BEADLE ANTHONY CRISP
IPC: H04R21/02
Filed: 1956-11-09
Abstract: 803,284. Microphones. STANDARD TELE, PHONES & CABLES, Ltd. Nov. 9, 1956, No. 34296/56. Class 40 (4). In a transmitter of the carbon-granule type, the diaphragm 7 has a central electrode portion 8 co-operating with the carbon chamber which contains two coaxial fixed electrodes 9 and 10 mounted on a coaxial insulating member 11 which protrudes into the carbon chamber and restricts the volume of the carbon granules in a region between the two fixed electrodes. Radial grooves may be cut in the surface of the insulating member 11, and an insulating enamel may be applied to the cylindrical sides of the front electrode 8 and of the annular fixed electrode 10. The transmitter may be used as a high-resistance series type, in which the current path extends between the two fixed electrodes 9 and 10, or as a conventional low-resistance instrument with the two fixed electrodes connected in parallel to one terminal and the moving electrode 8 connected to another terminal.