baber/WOPTO huggingface dataset:
Patent GB-488342-A (GB)
Title: Improvements in or relating to electric circuit-breakers having isolating arrangements
IPC: H02B11/18
Filed: 1937-10-21
Abstract: 488,342. Switchgear structures; fusible cutouts. NIJLAND, H. A. H. Oct. 21, 1937, No. 28797. Convention date, Nov. 17, 1936. [Class 38 (v)] [Also in Group XXXVI] In a high-voltage circuitbreaker having the contact elements in a fixed metal fluid-containing tank provided with fixed lead-in conductors to which the elements are connected so that they can be entirely withdrawn from and inserted into the tank while the conductors are alive, the tank consists of two tubular casings or the like intercommunicating at their top ends and having the insulators through which the lead-in conductors pass mounted in or near their bottoms, and the contact element, comprising an axially-movable plugging contact, is arranged in the axis of one of the tubular casings. Figs. 1, 2 show in the operative and withdrawn positions, respectively, a breaker adapted to connect a bus-bar 13 with a cable in a junction box 26, for which purpose, lead-in conductors 12, 25 project from the bus-bar and cable, respectively, into the lower ends of vertical tubular casings 6, 21, interconnected by an oil-filled receptacle 28. The movable contact 1 is adapted to bridge fixed contacts 2, 4 which respectively comprise also contact-fingers 3, 5, and is insulated at 8 from operating rod 7. Contact 2 is connected to the plug-like end 11 of lead-in 12 by means of contact-fingers 10, and is mounted on insulating support 14 secured to sleeve 15 which is threaded into insulating bush 16. The contact 4 screws into metal sleeve 17 which is connected to a similar sleeve 19 and contact 22 (for lead-in 25) over a conductor 18, around an insulating bush 27 of which is a ring or like current transformer 29. Part 28 of the casing has bosses 30a on which rest an insulating plate 30 and metal cover 31 having a lifting-eye 42. Threaded into contacts 4, 22 are insulating sleeves 32, 36, which threadedly engage caps 33, 37, respectively, for supporting the various parts from the top plates 30, 31, insulating sleeves 34 serving to locate the parts in position. A cover 40 carrying the casing 41 of the operating gear, closes the whole tank. In a multi-pole structure, a common tank could be provided for all the poles, or, Figs. 3, 4 (not shown), three such structures as shown in Figs. 1, 2 could be mounted one behind the other on a common bus-bar chamber and have a common junction box, cover, and operating mechanism. The Specification refers also to laterally-entering lead-in conductors, and to other modifications in details. In Fig. 5, the fingers 3, 5 are adapted to be bridged by a fusible element 49 stretched between contacts 47, 48 which are spaced apart by parallel insulating-rods 46.
Patent GB-996976-A (GB)
Title: Improvements in or relating to electrical signal limiting and amplifying circuits
Inventor: CLARK ADRIAN PERCY
IPC: H04L27/14
Filed: 1961-08-09
Abstract: 996,976. Transistor limiting circuits. BRITISH TELECOMMUNICATIONS RESEARCH Ltd. Aug. 9, 1962 [Aug. 9, 19611, No. 28799/61. Heading H3T. A limitor comprises a transistor amplifier with a diode bridge circuit connected in its input, the input impedance of the amplifier being such that the signal at the amplifier input is small compared with the input to the bridge. As described, the circuit comprises a first section consisting of a diode bridge D1 . . . D4 and transistors T1, T2 and a second section consisting of diode bridge D7 . . . D10 and transistors T3, T4. After an initial limiting by bridge D1 . . . D4 input signals applied at J are limited in amplifier T1, T2 by means of switched negative feedback paths in which diodes D5 or D6 conduct, depending on the polarity of the input, to apply negative feedback and thus reduce the input impedance of the amplifier. In the second section, the input impedance of amplifier T3, T4 is varied by a shunt diode D11, so arranged that the input impedance is a maximum when the transistor T3 is just cut off and decreases when either diode D11 or the base-emitter junction of T3 is forward biased. The section provides two antiphase outputs L, M clamped by diodes D12, D13.
Patent GB-947419-A (GB)
Title: Unsaturated bis-tertiary glycols and processes for their production
IPC: C07C29/42
Filed: 1961-08-11
Abstract: The invention comprises unsaturated bistertiary glycols of the general formula: <FORM:0947419/C2/1> wherein R represents a hydrogen atom or the methyl group, X represents a halogen atom or the trifluoromethyl group, Y represents a hydrogen atom or a halogen atom and each Z represents hydrogen or, together, they represent an additional bond; and their preparation by (I) reacting a 2-phenyl acetoin of formula: <FORM:0947419/C2/2> with at least 1 molar excess of an organometallic compound of formula: <FORM:0947419/C2/3> wherein M is the group Hal-Mg-, where Hal is a halogen atom, or when the two symbols z together represent an additional bond M may also be lithium, sodium or potassium, and then hydrolysing the reaction product obtained, and (z) optionally hydrogenating in the presence of a hydrogenation catalyst an acetylene of formula I to an ethylene. Metal acetylides III may be formed directly in liquid ammonia or during reaction from the alkyne and a suspended alkali metal hydroxide. Organic magnesium halides III may be prepared in tetrahydrofuran, for example reacting ethyl magnesium bromide with acetylene.  2-Phenyl-acetoins II may be prepared from phenyl magnesium bromides reacted with diacetyl or from acetophenones reacted with acetylides to give a product to which water is added.
Patent GB-921017-A (GB)
Title: Process for making a printed circuit
Inventor: PARKINSON NOEL PERCIVAL HENRY
IPC: H05K3/20
Filed: 1959-08-25
Abstract: 921,017. Switch contacts. VACTRIC (CONTROL EQUIPMENT) Ltd. Aug. 16, 1960 [Aug. 25, 1959], No. 29049/59. Class 38 (5). [Also in Group XXXVI] A method of making a printed circuit, e.g. a switch plate having flush-bonded contacts, comprises the steps of forming the conducting parts by applying a first layer of resist material to a conductive base member in regions which are to remain unplated and plating the base member, applying a second layer of resist material on to the first layer of resist material so as to overlap the latter, plating with a layer of metal to a thickness substantially greater than that of the second layer of resist so as to provide the plating layer with re-entrant portions, causing insulating material to enter the re-entrant portions such that the conducting portions and the insulating portions are keyed together, and removing the base member. A rigid steel baseplate 10 is plated with a layer 12 of copper or nickel and the whole of the upper surface apart from the areas forming the final switch contacts, is covered by a layer of resist material so that a layer 16 of rhodium, gold or silver can be plated only on the exposed areas. In order to obtain re-entrant portions a further layer 17 of resist material is applied to the upper surfaces of the resist regions 15 so as to overlap the latter, and conducting layers 19 are formed by plating copper or nickel on to the layers 16, the re-entrant upper portions 20 formed overlapping the resist areas 17. The resist material is then removed and the upper surfaces of areas 19 coated with adhesive, the printed circuit 22 then being placed with resin impregnated material 25 between steel plates 23, 24. This assembly is placed between the upper and lower plates 26, 27 of a heated platen, sheets of paper 28 being interposed between the plates 24, 26 and 23, 27 respectively. Thus on completion of the heated press cycle the printed circuit takes the form shown in Fig. 8A. Finally the rigid base-plate 10 may be stripped away and the layer 12 removed by etching. Instead of using the heated platen a casting process may be used. The portions 19 may be electrically interconnected by soldering preformed conductors between these areas prior to placing the conductive base between the heated platens, appropriate precautions being taken to ensure that they are not broken during the following pressing operation.
Patent GB-1480137-A (GB)
Title: Rotary positive-displacement machines
IPC: F01C1/32
Filed: 1974-07-01
Abstract: 1480137 Rotary positive-displacement vanetype machines GIPPSLAND INSTITUTE OF ADVANCED EDUCATION I J SPARK J M ROSSIN and R SINCICH 1 July 1974 [2 July 1973 18 Sept 1973 10 Jan 1974] 29149/74 Heading F1F A rotary I.C. engine comprises pre-compression and combustion chambers 10, 11, 12, 13 and 1, 2, 3, 4, Fig. 1, defined between an orbiting piston 6 and an external housing 14 and internal stator 5 respectively, end-plates 8, 9 being provided with pre-compression inlet ports 26, 27, 28, 29, transfer ports 16, 17 and exhaust ports 22, 23, 24, 25. Each vane, Fig. 3, comprises inner and outer portions 7, 15 separating the combustion and precompression chambers, portions 7, 15 being radially reciprocable in slots in stator 5 and housing 14 and being connected by legs 37 between which piston 6 can slide in a direction perpendicular to the vane. Four axles 31, 32, 36, 36 provide the orbiting motion of piston 6. They rotate in end-plates 9, 10, Figs. 2 and 4, and each have first and second eccentric pins rotatably mounted respectively in the piston 6 and in an orbiting link 33 rotatably mounted on eccentric 35 of shaft 34. The above construction can be modified for use as a two-stage compressor, Fig. 5 (not shown), the piston being specially slotted for sequential port opening and having specially adapted axial seals of wound steel strip, Figs. 6 to 10, (not shown). Instead of end-plate ports, camoperated valves may control inlet and outlet ports in the internal stator, Fig. 12 (not shown).
Patent GB-267846-A (GB)
Title: Direction indicator for motor-vehicles
IPC: B60Q1/34
Filed: 1926-11-18
Abstract: 267,846. Esser, H. Nov. 18, 1926. Road-traffic signals on vehicles.-The casing a of the spot light is provided with a brilliantlv coloured rim h and is so mounted that in addition to its usual deflecting movements, it can be turned about its central horizontal axis, so that a radial direction indicating lantern d overhanging and illuminating the rim h which is coloured red in one with the casing may be moved to the indicating positions. The casing a has a tail piece mounted in a sleeve k carried in a fork b which swivels in a carrier c. The casing is turned by a handle l while a switch f controls the lamp g in the lantern d and a switch i the lamp m the usual ring on which may be coloured green. In a modification the lantern d is arrow-shaped and the casing a is grooved at the side to receive a rod pivoted to the lamp support locking the casing against its usual deflecting movements; such locking rod may carry a rear-view mirror.
Patent GB-804882-A (GB)
Title: Process for ripening viscose
IPC: D01F2/08
Filed: 1955-05-17
Abstract: A process for ripening viscose comprises heating the viscose to a temperature of 35-45 DEG  C. by mixing it with substantially dry saturated steam which is at a temperature 5-15 DEG  C. above the temperature to which the viscose is to be heated, and maintaining the viscose at a temperature within this range until it has undergone a substantial degree of ripening.  A preferred method by which this process may be performed, and an apparatus in which it may be carried out, are described in the Specification 804,881.
Patent GB-390751-A (GB)
Title: Improvements in or relating to rinsing, cleansing and fat removing agents
IPC: C11D7/14
Filed: 1932-10-19
Abstract: Detergents which contain alkali metasilicates and yet are non-hygroscopic are obtained by mixing relatively small proportions of calcined tri-sodium phosphate with the metasilicate.  20-30 per cent of the weight of the silicate is suitable.
Patent GB-846198-A (GB)
Title: Improvements in or relating to bulking machines
IPC: B01F5/24
Filed: 1958-09-12
Abstract: 846,198. Mixing appliances. KARIM, A. A. Sept. 12, 1958, No. 29333/58. Class 86 [Also in Group XXX] A bulking, blending or mixing appliance for granular produce, e.g. coffee beans, comprises a container 14 having a funnellike lower portion 15 and outlet valve means 16 and provided internally with two conical of pyramidal deflectors 17, 18 mounted to leave annular spaces 19, 20 between their rims and the container wall. Material is supplied to the feed hopper 12 whence it is transferred by the bucket elevator 11 and shoot 13 to the container where the different grades initially lie in layers. The valve 16 being opened the material is circulated through the mixer by the shoot 21 and elevator 11. When blending is complete (after about five passages through the machine) the material is discharged through the pipe 23, 24 by removing the cap 22 of deflector 17.
Patent GB-904539-A (GB)
Title: Improvements in or relating to communication systems
IPC: H04M7/10
Filed: 1960-08-25
Abstract: 904,539. Automatic-exchange systems. SIEMENS & HALSKE A.G. Aug. 25, 1960 [Aug. 26, 1959], No. 29373/60. Class 40 (4). In a system employing two-way junctions VL which may be seized at either end over selectors M1, M2, in the event of simultaneous seizure of a junction at both ends, one end has priority and a seizure signal from that end is effective to cause the selector at the other end to resume hunting. The seizure signal is a continuous one and when successfully received is terminated by the arrival at the register Rg1 or Rg2 of an acknowledgment signal, which must differ from the seizure signal from the other end of the junction. Some of the junctions may be accorded priority at one end and some at the other end. The junctions may be wired in different order to the selectors M1, M2. If the junctions are connected at one end to a manual position that end is given priority. The junctions may be 4-wire with hybrid transformers Vel, Ve2.
Patent GB-639162-A (GB)
Title: Improvements relating to bone-conduction hearing-aids
IPC: H04R11/00
Filed: 1947-11-04
Abstract: 639,162. Instruments for deaf persons. SAVORY & MOORE, Ltd., and LEADBITTER, O. C. Nov. 4, 1947, No. 29386. [Class 40 (iv)] In a bone-conduction hearing aid having a base 10 suitably shaped for contact with the head of the user, one arm 131 of a two-armed bracket 13 bolted to the base forms a rigid support for a coil 15 electrically connected to a microphone or amplifier and the other arm 132 forms a slightly flexible mounting for a soft iron block 16 and an armature 17.
Patent GB-189440-A (GB)
Title: Improvements in or relating to focussing devices for photographic cameras
IPC: G03B17/02
Filed: 1922-10-27
Abstract: 189,440. Baille-Lemaire et Fils. Nov. 25, 1921, [Convention date]. Cameras, baseboard and tailboard extensions and like fittings for.-The focusing-scale is marked on a circular disc, which is angularly displaced in proportion to the rectilinear displacement of the obpective-carrying slide. In the form shown as applied to a folding-camera, the slide 7 carrying the camera objective carries also a rotary disc 1 fast with a pinion 2 meshing with a toothed sector 3, which turns on a pivot 5 carried by the slide 7, and has a slotted extension engaging a stud 4 on the folding baseboard 9. The play of the gears may be reduced by mutilating the sector 3 as at 6 to render it resilient. The sector is controlled by a spring 10, and its angular displacement is limited by a stop 8. The focusing-scale is marked on the periphery of the disc 1, and is read, against a fixed mark, through a slot 12 in the slide 7.
Patent GB-1161222-A (GB)
Title: Electrical Insulators Resistant to Creeping Currents and Arcs.
IPC: C08G59/14
Filed: 1966-07-10
Abstract: 1,161,222. Suspension insulators. R TGERSWERKE UND TEERVERWERTUNG A.G. 10 July, 1966 [10 July, 1965 (2)], No. 29569/66. Heading H2C. [Also in Divisions C2, C3 and H1] High voltage suspension insulators are moulded from an epoxy resin which is a di-, tri- or polyglycidyl ether of a hydrogenated di-, tri- or polyphenol and a curing or hardening agent therefor.
Patent GB-215027-A (GB)
Title: Means for withdrawing surplus oil and leakage fuel and gases from the pistons of internal combustion engines
IPC: F16J1/08
Filed: 1922-10-30
Abstract: 215,027. Marks, E. C. R., (Skinner Automotive Device Co., Inc.). Oct. 30, 1922. Pistons; packing, metallic.-A belt in the piston of an internal-combustion engine is subjected to the suction of the engine intake or a fan in order to remove surplus oil and leakage fuel and gases, the oil being then separated and returned to the crank-chamber, the fuel &c. passing to the intake. The piston may be provided with an oil-collecting channel 25, Fig. 1, with an air vent 27 diametrically opposite to a suction port 26 in the cylinder wall. An axial groove 28 in the piston wall maintains the communication of the groove 25 with the part 26 as the piston rises and an extension 29 on the piston skirt covers the port 26 when the piston is at the top of its stroke. The extension may have an axial groove 30 communicating with the groove 28 by a passage 31 and a port closed by a check valve 33. In a modification the groove 25 is dispensed with, the lowest piston-ring groove 113, Fig. 4, communicating by a groove 112 with an axial passage 111 in register with a suction port.
Patent GB-835087-A (GB)
Title: Magnetic amplifiers
Inventor: WHITEHEAD CYRIL CRYER
IPC: H01F29/14
Filed: 1957-09-20
Abstract: 835,087. Inductors. SPERRY GYROSCOPE CO. Ltd. Aug. 1, 1958 [Sept. 20, 1957], No. 29655/57. Class 38 (2). In a magnetic amplifier having two load windings 8 arranged around the centre links of laminated cores 1, 2 and bias and control windings 9, 11 surrounding the load windings 8, shielding conductors 12, 13, which may be earthed coils or layers of metal foil, are inserted one between windings 11 and 9 and the other between windings 9 and 8 to eliminate capacitance coupling.
Patent GB-375666-A (GB)
Title: Improvements in or relating to rotary valves for internal combustion engines
IPC: F01L7/02
Filed: 1931-10-27
Abstract: 375,666. Valve mechanism; cylinders. KONSTANTINOFF, J., 19, Rue Vernier, Paris. Oct. 27, 1931, No. 29723. Convention date, Oct. 27, 1930. [Classes 7 (ii) and 7 (vi).] Valves; combustion chambers.-A rotary valve controlling inlet at A and exhaust at E is formed with a bore 10 which constitutes the combustion chamber, and into which enters a projection 17 on the piston. The projection 17 shields the valve from the heat. of the cylinder gases. Recesses 11, 12 provided around the valve are ribbed at 11a, 12a and covered by split rings 13, 14, forming air spaces which have a further cooling effect. The leading vertical edge of the inlet port in the valve may be spaced 135‹ from the rear edge of the exhaust port. Regulating.-A liner 2 surrounding the valve is adjustable angularly by a segment 21 and worm 22 to vary the size of the port openings. In large engines, a stationary liner is inserted between the valve and the adjustable liner.
Patent GB-1358249-A (GB)
Title: Screw machining material and method of preparing same
IPC: C22F1/00
Filed: 1972-06-26
Abstract: 1358249 Screw-machining material; continuous casting NORANDA MINES Ltd 26 June 1972 [1 Nov 1971] 29836/72 Headings B3A and B3F [Also in Division C7] A method of producing a material suitable for screw-machining comprises casting an alloy containing 20 to 35 wt. per cent aluminium, 4 to 10 wt. per cent copper, up to 0À2 wt. per cent magnesium, balance zinc, extruding the alloy to form rods and then drawing the rods. A preferred alloy composition is 24 to 26 wt. per cent Al, 4À5 to 5À5 wt. per cent Cu, 0À02 to 0À06 wt. per cent Mg, balance Zn. Amounts of zinc and magnesium are added to an aluminiumcopper melt which is then continuously cast into billets S using a mould 10, Fig. 2. Cooling water W surrounds the mould in a jacket 11 and may fall therefrom to cool the emerging billet, the cooling of the billet being arrested by a water stripper 15, e.g. of hard rubber, at a level above the point 14 at which the alloy is fully solidified. The stripper is attached by a support 18 which is adjustable with respect to its distance from the mould. There is a graph showing relationship of the stripper distance and casting speed. The formed billets are then extruded into rods suitable for drawing. The fillets can be soaked at 250C prior to extrusion at 250 C. The rods are then drawn to their final screw machining size to give a reduction of from 10 to 50%. The dimensional stability and creep resistance of the material may be improved by heat treating after the extrusion step 3, Fig. 1, or during the drawing step 4. For example, the rods can be homogenized at 275 to 300 C., slow cooled to 250 C. at a rate 0À5 to 2 degrees/minute, and then air cooled to ambient temperature. The rods are then screwmachined, preferably at high feed rates, and the finished articles plated. The plating operation 6 involves buffing, polishing, deburring and degreasing the articles. Then they are rinsed in water and immersed in NaOH/NaF aqueous solution, preferably at room temperature and with agitation. The articles are then rinsed, a copper strike is applied, e.g. copper cyanide strike, followed by copper, nickel and chromium plating.
Patent GB-1213446-A (GB)
Title: Improvements in or relating to needle felting machines
IPC: D04H18/00
Filed: 1969-06-12
Abstract: 1,213,446. Needling machine. OSKAR DILO K.G. 12 June, 1969 [15 June, 1968], No. 29902/69. Heading D1R. A needling machine has a needle beam 1 to which is fastened needle boards 2 with rows of needles 3 projecting therefrom. Below the beam 1 is a movable or fixed perforated holding down plate 4 and a perforated plate 5 below the latter so that the needles may extend through these plates during needling. The sheet of fibres to be needled 6 runs through compacting rollers 9 before entering the machine. At the entrance end of the machine the needle beam 1 has a clamping strip 7 provided with needles or pins 8. The plate 4 is bent upwards at this position and the strip 7 is shaped to correspond with this portion through which the needles 8 may extend.
Patent GB-820202-A (GB)
Title: Processes and tanks for heating water for agriculture, horticulture and other uses and fine distribution of liquid manure, trace elements, insecticides and similar agents
IPC: F24D17/00
Filed: 1954-10-18
Abstract: 820,202. Utilizing solar and natural heat; supply and delivery arrangements for hotwater boilers. MARTINI. P. A. Jan. 18, 1956 [Oct. 18, 1954], No. 29906/54. Classes 64(1) and 64(2) In a tank warmed by the sun or air from which warmed liquid, such as water for plants, baths or livestock, or liquid manure or chemicals for treating plants, is forced out by the pressure of incoming mains water, the cold water inflow is slowed down to avoid its mixing with the warm liquid. There is black paint, or one which absorbs infra-red rays, on the tank. As shown, cold water enters an inlet pipe st from a smaller-bored pipe e near one end and enters the tank a from a bellmouth directed towards the bottom of the tank, while the outlet pipe r and a safety valve v (for operation at a pressure of 4¢ atmospheres) are at the top. Other means for hindering mixing of the liquids are described. These include a double baffle at the bottom, Fig. 2 (not shown). There may be a number of tanks interconnected and valves or agitators for mixing some cold water with the warmed liquid for attemperation before delivery. There may be an inlet reducing valve, supplementary heating by electricity, coal or oil, or a by-pass for the tank. The Provisional Specification describes also a serpentine pipe (in which the liquid is warmed), room heating, thermostatic control of the inflow and radiators or reflectors such as mirrors and glass covers for increasing the effect of the sun.