baber/WOPTO huggingface dataset:
Patent GB-1320358-A (GB)
Title: Relay control system
IPC: H01H9/56
Filed: 1970-11-02
Abstract: 1320358 Arc rupturing in switches HONEYWELL Inc 2 Nov 1970 [11 Dec 1969] 52067/70 Heading H1N [Also in Division H3] To prevent erosion of the contacts of a relay having its contacts 42, 43 in an A.C. circuit and its coil 41 energized by a solid state circuit connected by a rectifier to the A.C. source 10, means, e.g. a resistor 26, are provided in the rectifier 22...25 to unbalance the ripple voltage to cause the solid-state circuit to energize the relay to close its contacts at a particular point in the A.C. cycle, so that should contact bounce occur, the arc drawn has the appropriate polarity to avoid transfer of contact material from one contact to the other, the contacts being of dissimilar materials. In the arrangement shown, a capacitor 38 is charged until its voltage exceeds the voltage across the relay coil 41 and interbase resistance of a unijunction transistor 33, the latter voltage being that of an instantaneous low peak voltage as determined by the unbalance of the ripple. As a result, the capacitor can only discharge through the transistor 33 at a point on a given half cycle of the A.C. supply to energize the relay coil so that, for example, if the relay contacts are of tungsten and silver cadmium oxide, the tungsten contact is always the anode when arcing occurs due to contact bounce. The relay may have holding contacts 48, 49.
Patent GB-1314280-A (GB)
Title: Self-ejecting chuck key
IPC: B25B33/00
Filed: 1971-11-09
Abstract: 1314280 Chuck key S A OSTRAGER 9 Nov 1971 [9 Nov 1970] 52072/71 Heading B3N A chuck key is adapted so that after use with a chuck it is ejected therefrom. Fig. 2 shows a key having a body 22, a pinion 26, a handle 42, a pilot 28 and a spring loaded collar 30. In use the collar is pushed into the body when the key is applied to a chuck. When pressure on the key is removed the collar ejects the key from the chuck. Fig. 4 shows an alternative embodiment wherein collar 130 is spring biased against a shoulder 140 on the pilot 128. In a further embodiment the collar has the flange that abuts a shoulder on the pin positioned at its outer end. Also the pin is screwed to the body instead of being a push fit thereto.
Patent GB-1122728-A (GB)
Title: Flexible spacer
IPC: G21C3/336
Filed: 1966-11-21
Abstract: 1,122,728. Fuel elements. ATOMIC ENERGY OF CANADA Ltd. 21 Nov., 1966 [31 Dec., 1965], No. 52081/66. Heading G6C. The fuel elements in a fuel element assembly are secured to their neighbouring elements by means of flexible spacers, each comprising a wire bent to form at least a pair of attachment portions and at least one transverse portion uniting the attachment portions, each attachment portion being secured to the sheath of its adjacent element by means perpendicularly offset from the line of action of force between the elements acting through the transverse portion or portions. The spacers are suitably made of zirconium alloy wire and may be either spot welded or continuously welded to the element cladding. In one embodiment (Fig. 3), the fuel elements are joined by means of flexible spacers 10 of double crank shape (shown in full outline), each spacer 10 being joined to one element 17 by two spot welds at each of its end attachment portions 15, 16, and also to an adjacent element 18 by two spot welds at its intermediate attachment portion 19. The end portions 15, 16 are joined to intermediate portion 19 by transverse portions 30, 33. If it is desired to increase the bond between the elements, the spacer 10 may be lengthened as shown in broken outline in Fig. 3. Because of the flexibility of the spacer 10, relative longitudinal movement of elements 17, 18 is possible. The spacers may alternatively be of hairpin shape (Fig. 4, not shown) or of single crank shape (Fig. 5, not shown). The spacers may be offset from the plane within which the longitudinal axes of two adjacent elements lie (Fig. 2, not shown), or they may be placed in the plane joining the axes (Fig. 6, not shown) to give more positive element to element spacing. The transverse portion of each spacer may include a curved portion to reduce resistance to lateral movement between the elements. Where the fuel elements are of annular shape arranged coaxially one within the other, flexible spacers similar to those described above are disposed between the elements.
Patent GB-1501190-A (GB)
Title: Introduction of gases into vessels
IPC: B22D1/00
Filed: 1975-12-19
Abstract: 1501190 Injecting gas into molten metal SWISS ALUMINIUM Ltd 19 Dec 1975 [24 April 1975] 52196/75 Heading F4B A gas injection device located in a wall of a vessel containing molten metal, e.g. aluminium, comprises a metal sleeve 1 lying in the opening and fastened to the outer face of the vessel wall in a removable manner by means of a plurality of screws 5 and associated spring washers 10, and a gas permeable plug 3 of heat resistant material, e.g. zironcium silicate, adjustably and removably mounted within the sleeve 1 by a series of spring-pressure members each comprising a stack of dish-shaped spring washers 10 surrounding a central pin 8. The spring members bear against a metal disc 9 held in position by a circlip 7 located in an annular groove 16 in the metal sleeve 1. The screws 5 extend through openings in an annular flange 15 which is welded to or formed integrally with the sleeve 1. A layer 2 of aluminium silicate fibres may be provided between the sleeve 1 and the plug 3. Gas, e.g. argon, is introduced into the plug 3 via one or more openings 19 in a metal cover plate 4. As shown, the plug is of frustoconical shape, but alternatively it may comprise two coaxially disposed cylinders of different diameters (see Fig. 4, not shown).
Patent GB-1457067-A (GB)
Title: Arrangement for testing telecommunication repeaters
IPC: H04L1/24
Filed: 1974-12-03
Abstract: 1457067 Data transmission; methods of testing STANDARD TELEPHONES & CABLES Ltd 3 Dec 1974 52248/74 Heading H4P An arrangement for adjusting a repeater comprises a generated noise signal biased by a ramp voltage, the resultant being fed through a transformer together with input digital signals to the repeater with an error detector at repeater output which may reset the modulator to zero. A line code of the type 4B3T as described in Specifications 1,156,279 and 1,250,924 may be employed.  A noise generator, e.g. sinusoidal is added to a ramp voltage and applied through an amplifier, a stepped output attenuator, and a high impedance transformer to incoming lines connected to the repeater input. An error detector examines the repeater output disparity and provides a signal when this is excessive. Use of 4B3T code provides a maximum positive/negative disparity of 4 hence >4=fault condition. Input to the error detector is divided into + / - streams (see Fig. 2, not shown) counted by a 4 bit up/down counter which gives inputs to gates (G1, G2) which produce an output to a NOR gate (G3) on >4 disparity. A signal from (G3) causes output from the ramp generator to be held, and after a suitable delay reset, and after further delay it is released. In a correctly refunctioning repeater the noise threshold is generally sharp hence the ramp generator is normally repeatedly held at approximately the same point; the ramp output may therefore be smoothed to operate a meter M providing an indication of a noise amplitude threshold at which incorrect operation of the repeater occurs. Adjustment can then be made to obtain a condition so the repeater operates at its optimum point for a noisy environment such as cross-talk. Line signals are preferably scrambled, e.g. pseudo randomly before transmission hence no pattern generator is required at the repeater. Circuits are given in Figs. 3 and 4 (not shown) for systems in which maximum disparity is 1 or 2 respectively.
Patent GB-1509860-A (GB)
Title: Process for the manufacture of carbodiimides
IPC: B01J27/16
Filed: 1976-12-15
Abstract: 1509860 Preparation of organic carbodiimides HOECHST AG 15 Dec 1976 [17 Dec 1975] 52307/76 Heading C2C Organic carbodiimides are prepared by heating an organic isocyanate of the formula R-(NCO) n  where R is an organic radical and n is 1 or 2, in the presence of a 2-methyl-2,5-dioxo-1-oxa-2- phospholane of the formula at a temperature of from 50‹ to 250‹ C.
Patent GB-1293362-A (GB)
Title: Diode modulator
Inventor: BERCELI TIBOR
IPC: H03C7/02
Filed: 1969-10-27
Abstract: 1293362 Diode amplitude modulators TAVKOZLESI KUTATO INTEZET 27 Oct 1969 52587/69 Heading H3R An amplitude modulator comprises one or more diodes 1 mounted in a waveguide which has a rectangular cross-section of reduced height 2, each diode being tuned by a stub 4 and coupled to the modulation source by a cavity filter 6, 8.
Patent GB-1127122-A (GB)
Title: Resinous moulding compositions
Inventor: HARRIS GLYN ISLWYN
IPC: C08G61/00
Filed: 1964-12-29
Abstract: 1,127,122. Laminates. MIDLAND SILICONES Ltd. 29 Dec., 1965 [29 Dec., 1964], No. 52628/64. Heading B5N. [Also in Divisions C3 and C4] Glass cloth may be laminated by impregnating pieces thereof with a composition comprising (1) the product obtained by reacting to a stage which permits further cross-linking of the product (a) a compound containing one or more aromatic nuclei with (b) a compound other than (a) and having the general formula R<SP>1</SP>(CH 2 OR) x  wherein x has a value of 2 or 3, R is an alkyl radical containing less than 5 carbon atoms and R<SP>1</SP> is an aromatic residue composed mainly of carbon and hydrogen, and (2) ferric chloride, precuring the impregnated glass cloth by heating, superimposing several sheets and laminating by heating under pressure. The laminate so formed, may, if desired, be subjected to a postcure. Examples describe the laminating of glass cloth wherein the polymer product (1) is derived from p-xyleneglycoldimethylether and (a) diphenyl oxide and (b) diphenyl.
Patent GB-1518970-A (GB)
Title: Microwave oven
IPC: H05B6/74
Filed: 1975-12-24
Abstract: 1518970 Microwave ovens MICRO-TRONICS Inc 24 Dec 1975 52794/75 Heading H5H A beam stirrer in a microwave oven is mounted eccentrically about its rotating shaft at the opening of a waveguide. Cylindrical stirrer 30 is affixed to shaft 26 by a tab 4 that is bent to give a suitable angle (e.g. 5-10 degrees) between an axis of the stirrer and the supporting, rotating shaft. The length of the cylinder "h" is approximately a quarter wavelength, e.g. 0À7 inches. The shape need not be circular; square, elliptical, rectangular shapes are mentioned, "other" shapes are possible, including "segmented". The flat disc stirrer (4) could be made of dielectric material and could be an "open" ring.
Patent GB-1155250-A (GB)
Title: Portable Heater.
Inventor: WOOLLEN CHARLES EDWIN
IPC: F24H3/06
Filed: 1967-11-21
Abstract: 1,155,250. Air heating stoves. JOHN WOOD CO. 21 Nov., 1967, No. 52998/67. Heading F4S. A portable air heater comprises an outer shell 16 with a heated air discharge outlet 22 at its forward end and an inner shell 26 spacedly mounted therein, closed at its forward end and having a rearward closure plate 25 in common with an interior combustion chamber shell 30 which is spaced mounted therein. An oil burner nozzle 32 projects through the plate 25 and is connected by a tube 34 to a fuel tank 1 beneath the shells, and by a pipe 37 to a compressor 38 driven by a motor (not shown) which also drives a blower (not shown) which forces air through the space between the inner and outer shells to be heated by contact with the outer surface of the inner shell 26. The combustion gases from the nozzle 32 pass through the chamber shell 30 and rearwardly through the space between the chamber and inner shells to a venting stack 63 and the gases are put into turbulence in this space by baffles or rings 60 mounted on the outer surface of the combustion chamber shell. The heater has a pair of wheels at the rear end and handles 12, 10 at the front and rear ends respectively, the part 8 of the handle 10 acting as a rest for the heater.
Patent GB-1535310-A (GB)
Title: Hysteresis circuit
IPC: H03K5/08
Filed: 1975-12-31
Abstract: 1535310 Transistor switching circuits TOKYO SHIBAURA ELECTRIC CO Ltd 31 Dec 1975 [17 Jan 1975] 53349/75 Heading H3T A trigger circuit exhibiting hysteresis comprises an emitter coupled pair Q1, Q2, with the input applied through a resistor R 1 to the base of Q1, the collector of transistor Q2 being connected via a current mirror to a current source 13 having a current capacity half that of the current source 12 common to Q1 and Q2 and the collector of transistor Ql being connected to its power supply through a transistor Q5 having its base connected to the current source 13. When the input voltage applied at 11a is low, Q1 is off and Q2 on. The current through Q3 saturates Q4 which therefore holds Q5 off. As the voltage on 11A increases, emitter current begins to flow in Ql, provided by the base and this reduces the emitter current in Q2. When the emitter currents of Q1 and Q2 are equal at i/2, Q4 comes out of saturation, turning on transistor Q5. Positive feedback occurs, turning Q I hard on and Q2 off. When the voltage on 11A decreases Q1 and Q2 act as a differential amplifier until the voltages on 11a and 11b are equal. Any further decrease in the voltage on 11a saturates Q4 and turns off Q5 returning the circuit to its initial state. The hysteresis voltage, which equals ¢iR 1  may be adjusted by varying i or R 1 . The constant current souces 12, 13 may be resistors. The output voltage is taken from a second collector on transistor Q5 or Q4 (not shown).
Patent GB-1481718-A (GB)
Title: Tobacco composition
IPC: A24B15/10
Filed: 1974-12-10
Abstract: 1481718 Tobacco composition LIGGETT & MYERS INC 10 Dec 1974 [19 Dec 1973] 53408/74 Heading A2C A tobacco composition comprises tobacco; zinc oxide in an amount of 0.1 to 15 weight % based on the weight of tobacco; and a nitrate of an element selected from Group IIA or Group IIB of the Periodic Table in an amount of from 0.25 to 0.75 weight percent calculated as nitrate nitrogen based on the weight, of tobacco.
Patent GB-1285274-A (GB)
Title: Apparatus for conveying and cutting flat metal members
IPC: B23K7/00
Filed: 1970-11-12
Abstract: 1285274 Cutting by fusion NIPPON KOKAN KK 12 Nov 1970 [17 Nov 1969] 53791/70 Heading B3V Metal sheets 22 are moved by a conveyer 3 from a support table 2 to a cutting station where they are cut by an automatically controlled cutting torch 24. The uppermost sheets of two sheet stacks on the table 2 are pushed on to the roller conveyer 3 by a pusher (1a, 1b) (Fig. 3, not shown) operated by an hydraulic cylinder (1). After each movement of the pusher (1a, 1b) the table 2 is raised by a cylinder (5) to bring the uppermost sheets in the stacks into alignment with the pusher. The two sheets 22 are moved by the conveyer 3 on to rollers 9 until their ends abut an adjustable stop 13, whereupon they are cut to the desired shape by a pair of torches 24 mounted on carriages 25, 26. The movement of the torches 24 is automatically controlled by a magnetic roller 19 following a template 18. After cutting the sheets 22, the supporting rollers 9 are tilted by a cylinder 11 to discharge the workpieces 22 on to a pallet.
Patent GB-1417027-A (GB)
Title: Assemblies of prefabricated prestressed reinforced concrete  elements
IPC: E04C5/12
Filed: 1972-11-21
Abstract: 1417027 Connecting concrete elements R SOUM 21 Nov 1972 [4 Jan 1972 3 Oct 1972] 53801/72 Heading E1W Prefabricated prestressed concrete elements, e.g. beams and columns, are interconnectable by one or two turnbuckles, preferably connected to the reinforcement of the elements, the nuts A1, A2 or 1a, 1b having ball and socket engagement with the cage or cages B or 3a, 3b to facilitate the connection of misaligned elements. Beams connected to columns in this way may have lower projecting portions sitting on haunches on the columns, and be connected in the above-described manner near their upper sides.
Patent GB-1107238-A (GB)
Title: Process for the preparation of alicyclic methylene-ªÏ-aldehydes
Inventor: GUNTHER EBERHARD
IPC: C07C47/225
Filed: 1966-12-01
Abstract: Alicyclic methylene-o -aldehydes are produced from alicyclic hydrocarbons carrying an exocyclic methylene radical on the ring by reacting such hydrocarbons with a disubstituted formamide in the presence of an acid halide. Thus, in Example 1, camphene yields camphene-o -aldehyde when treated with dimethylformamide in the presence of phosphorus oxychloride. Other examples describe the treatment of b -pinene and of a cedrene mixture. Other specified acid halides are thionyl chloride and phosgene.
Patent GB-1459050-A (GB)
Title: Cover for a card and process for its manufacture
IPC: D01G15/84
Filed: 1974-12-13
Abstract: 1459050 Construction of carding cover FRIED KRUPP GmbH 13 Dec 1974 [14 Dec 1973] 54001/74 Heading D1N A cover for a card which consists of a rigid body 1 and an attached flexible lining 3 with projecting carding wires 4 is produced by stretching the flexible lining over the peripheral surface of a cylinder 6, placing the body 1 of the cover in position spaced from the lining then filling the intervening space with kneadable or castable plastics material 2 which is subsequently hardened. Wires 5 or wire netting is stretched around the lining by springs 7 and is set into the plastics material, the ends being trimmed away after hardening. The carding wires may have curved back pieces 10 which embed in the plastics material, similar pieces or projections 12 can be provided on the body 1. The lining 3 may also have bent holding elements which project into the plastics and the body may have a corrugated reinforcing plate which enters the plastics material, Fig. 4 (not shown), reinforcing ribs 9 can be secured on the exterior of the body 1.
Patent GB-1243103-A (GB)
Title: Mos read-write system
Inventor: HOFFMAN CHARLES ROBERT
IPC: G11C11/412
Filed: 1969-11-04
Abstract: 1,243,103. Bi-stable store. MOTOROLA Inc. 4 Nov., 1969 [29 Nov., 1968], No. 54002/69. Heading G4C. [Also in Division H3] A bi-stable 25 is switched over by the complementary outputs at 26, 28 of a switching circuit 96 which is controlled in turn by the complementary outputs 102, 104 of a datareceiving switching circuit 201, the last mentioned outputs 102, 104 being enabled or inhibited by a write control circuit 108, and the circuits employ semi-conductor field effect devices, such as P-channel MOS F.E.T. s as shown. The data is inverted at 114 and inverted again at 112 to give the complementary data signals on lines 102, 104. These lines are normally earthed by F.E.T.'s 186, 190 in the write circuit 108 due to the normally negative level of the write command signal at 110 (70, Fig. 2, not shown); the switching circuit 96 is thus inhibited. When the write signal goes positively to earth (66) and the data is also at earth (60) then line 102 is negative and line 104 is earth so turning on F.E.T.'s 182 170 in the switching circuit (174, 178 being off) and consequently making its output 26 negative and output 28 earth. These turn on F.E.T. 156 of the bi-stable and turn off F.E.T. 154 to write a 1 provided that gate F.E.T.'s 162, 164 are conductive. This is ensured by a bit select circuit 10 whose output word line 90 is negative to turn on F.E.T.'s 162, 164 provided that it receives a positive (earth) enable pulse at 20 and a negative address signal A at 12 which turns off F.E.T. 138. F.E.T.'s 126, 130, 134 similarly receive address control from other A inputs (not shown). Load resistors are formed by F.E.T.'s 95, 99. To read, a positive going pulse (72) is applied to a read command input 120 turning off a F.E.T. 224 and allowing a F.E.T. 220, receiving the bi-stable output on line 28, to turn on F.E.T. 216 in an output buffer circuit 122 provided that bi-stable output 28 is at earth (1). The output line 107 of the buffer circuit, which is thus earthed, is connected to the data line 116. During the read operation, the bi-stable gating F.E.T.'s 162; 164 are again held conductive by the address and enable circuit 10.
Patent GB-1163134-A (GB)
Title: Improved Hydraulic Shock Absorber with Communication Slide-Valve for Automobile Vehicles or the like.
IPC: F16F9/06
Filed: 1966-12-02
Abstract: 1,163,134. Vehicle suspension. SOC. ANON. ANDRE CITROEN. 2 Dec., 1966 [7 Dec., ., 1965], No. 54174/66. Heading B7D. [Also in Division F2] Two liquid compartments 11, 12 of a shockabsorber are divided by a partition 13 which has a bleed orifice 17 and two openings 18, 18a which have extended skirt portions 20, 21 and 20a, 21a and which receive the stems 19, 19a of valves whose heads 26, 26a co-operate with seatings 24, 24a, the valve stems 19, 19a having longitudinal conduits 30, 30a with calibrated inlet orifices 31, 31a and outlet parts 32, 32a, respectively, and the conduits 30, 30a being provided with separate inlet passages 29, 29a which are progressively closed by the skirts 20, 20a when the valves are lifted against the action of the springs 25, and which, as shown only in the case of the inlet passage 29, is reopened as it reaches a further peak limiting-hole 22 in the skirt 20. Considering pressure rising in the compartment 11, when the flow rate is small the fluid passes solely through the calibrated orifice 17. As the pressure increases the valve 19, 26 lifts, opening up additional communication between the compartments 11, 12 by means of the passage 29, the orifice 31, conduit 30, outlet ports 32, and a chamber 23 within the skirt 21 so that pressure/displacement characteristic flattens until the passage 29 begins to be closed by the skirt 20. Continued increase of pressure in the compartment 11 causes the passage 29 to be fully closed so that the characteristic rises sharply. Greatly increased pressure raises the stem 19 sufficiently for the passage 29 to communicate with the further hole 22 in the skirt 22 to enlarge the liquid flow area again so that the characteristic flattens off again at its upper-end. The valve 19a, 26a operates in the opposite sense in a similar manner. However, no hole 22 is provided in the skirt 20a, so that a curved-over portion at the top of the characteristic is not provided. In an oleo-pneumatic shock-absorber 1, Fig. 1, the rod 7 of a piston 8, which works in a cylinder 9, is connected to a crank arm 4 of a suspension for a wheel 3, a partition 13, with valves as described, dividing the cylinder into lower and upper spaces 11, 12, and the upper space 12 accommodating a compressed gas cushion 10. If the suspension includes a separate support spring (14), Fig. 2, not shown, the cylinder has a compensating compartment instead of the spring cushion 10, and the piston carries a pair of control valves, as described.
Patent GB-1442313-A (GB)
Title: Device for aiding the putting on of hose for personal wear
IPC: A47G25/90
Filed: 1972-11-25
Abstract: 1442313 Devices for putting on socks and stockings H V HICKS 5 Oct 1973 [25 Nov 1972] 54577/72 Heading A3V A device for assisting an incapacitated person to put on socks or stockings, comprises a handle 10 and two resilient flexible arms 11, 12 extending therefrom, each arm having inwardly directed portions such as helical loops formed therein with a portion extending between the loops for supporting a pre-rolled sock or stocking as shown to allow entry of the person's foot and automatic unrolling of the sock or stocking as the arms 11, 12 are drawn upwardly on opposite sides of the person's legs. The arms are suitably formed of wire and are bent at 11a, 12a. To facilitate unrolling of the sock or stocking the wire may be polished. The arms 11, 12 may be separate or formed as a continuous length of wire. The handle 10 may be formed by twisting the wire of the arms together. Preferably the arms are detachable from or foldable relative to the handle for convenience of packing.