baber/WOPTO huggingface dataset:
Patent GB-1153133-A (GB)
Title: Improvements in Temperature Change Detectors
Inventor: CLIFFORD GLYNNE FRANCIS
IPC: H01C7/04
Filed: 1965-07-28
Abstract: 1,153,133. Temperature change detectors. GRAVINER (COLNBROOK) Ltd. 6 Oct., 1966 [28 July, 1965], No. 32205/65. Heading H1K. A device for detecting temperature changes comprises two spaced electrical conductors, one of a Ni-Cr alloy and the other of stainless steel containing Ni, separated by a salt whose electrical resistivity changes abruptly at a certain temperature. The salt may be cadmium bromide, and the conductors may be arranged coaxially with the Ni-Cr alloy providing an inner conductor and the Ni-containing stainless steel providing an outer sheath.
Patent GB-508008-A (GB)
Title: Improvements in or relating to the manufacture of carbon for electrical and other purposes
IPC: C01B31/00
Filed: 1937-11-23
Abstract: 508,008. Carbon electrodes and other articles. CLOUD, W. A. Nov. 23, 1937, No. 32244. [Class 90] Carbon for electrodes and other articles is made by mixing finely ground anthracite coal having a fixed carbon content of approximately 90 per cent and 1 per cent ash, bituminous coal, calcined flame lamp black and petroleum still coke with coal tar and/or pitch as binding agent, reducing the mixture to a plastic mass by heat, moulding or extruding the mass to the desired shape and then baking the articles, the process being initiated at a temperature of 212‹ C. and carried on thereafter at a gradually increasing temperature, up to an optimum of about 2,000‹ F. For a softer grade of carbon, caramel from cane sugar or carbonised sugar may be used as a binder instead of the coal tar or pitch, and if desired, foliated graphite may ,be incorporated in the mixture. Preferably the powdered mixture is washed to remove impurities, dried and then mixed with the binder, again reduced to powder and then made plastic by heating, and finally pugged under pressure at about 220‹ F. A suitable mixture is 6 lbs. anthracite ; 3 lbs. bituminous coal; 2 lbs. coke; 1 lb. lampblack and 28-35 lbs. binder. These proportions may be varied according to the mechanical strength required. The product is suitable for making electrodes, plates, slabs, crucibles, furnace linings and similar. articles. Specification 15782/94, [Class 90], is referred to.
Patent GB-1029827-A (GB)
Title: Improvements in or relating to prefabricated panels for the walls of buildings
Inventor: SANDYS RICHARDS
IPC: E04C2/296
Filed: 1962-08-22
Abstract: 1,029,827. Laminates. TENSILE PRODUCTS Ltd. Sept. 24, 1963 [Aug. 22, 1962], No. 32342/62. Heading B5N. [Also in Division E1] A panel for the wall of a building comprises a backing 26 surrounded by a frame 37 of channelsectioned plastics or aluminium the panel being faced with elongate plastics strips 74 connected together side by side and being clipped over screws or supporting ribs 81, 73, the backing being a three or more layered laminate, for example a wood wool layer 64 between asbestos sheets 65. The plastics strips are provided with strengthening ribs, either ribs 75 as shown in Fig. 12 or ribs which are square corrugations in the plastics strip.
Patent GB-918568-A (GB)
Title: Semiconductor devices
IPC: C25F3/12
Filed: 1961-06-21
Abstract: 918,568. Etching. WESTINGHOUSE ELECTRIC CORPORATION. June 21, 1961 [July 18, 1960], No. 22396/61. Class 100 (2). [Also in Group XXXVI] The performance of a tunnel diode is improved by etching it in the region of the junction while passing a current through it, either continuously or from time to time so as to monitor its electrical characteristics, the etch being of such low conductivity as not to affect substantially the performance of the diode. As shown in Fig. 1, a semi-conductor device which may be of silicon, germanium or gallium arsenide and has a PN junction with tunnel diode characteristics is immersed in a low-conductivity etch 18. A forward current from source 14 passes through the junction and a cathode-ray tube 16 traces the characteristic of the device, etching being allowed to proceed until the characteristic is satisfactory. The etching process removes a peripheral area 22 about the PN junction. Suitable etching solutions contain from 1 to 10 parts by volume of 90% fuming red nitric acid, 1-15 parts of 80% acetic acid, 1-10 parts of 50% hydrofluoric acid and 0.1 to 4 parts of bromine per 100 parts of solution. Specific etches in this range are described.
Patent GB-652528-A (GB)
Title: Improvements in or relating to apparatus for disintegrating bales of fibrous materials
IPC: D21B1/06
Filed: 1948-12-15
Abstract: 652,528. Disintegrating bales of fibrous material. CELLULOSE DEVELOPMENT CORPORATION, Ltd., and BECKER, F. G. L. Dec. 15, 1948, No. 32496. [Class 120(i)] An apparatus for disintegrating bales of fibrous material comprises an outer casing in which is rotatably mounted a rotor, a hopper at one end of the casing arranged to hold a bale against rotation while in contact with one end of the rotor, which end is provided with short teeth 34 adapted to rip off parts of the bale and feed them axially towards the other part of the casing and rotor, which other parts are provided with inwardly and outwardly extending teeth 28 and 39 respectively which subject the ripped-off portions to a rubbing action, and an outlet 18 at the end of the casing remote from the hopper. As shown, the casing comprises divergent beams 9, 21 carrying detachable teeth 28, the spaces between the beams being closed by curved metal plates. The tapering rotor comprises a conical casting 32 and longitudinal members 36, carrying detachable teeth 39, fixed to pentagonal plates 35 on a shaft 31. The spaces between members 36 are closed by flat plates 41. The axial spacing of teeth 28 and co-operating teeth 39 diminishes towards the larger end of the casing and rotor. Member 32 is provided with helical rows of the short teeth 34. An upper casing plate opposite member 32 is provided with a rectangular hopper (not shown) of a size to accommodate a bale of bagasse and hold it against rotation, and the outlet 18 at the larger end of the casing constitutes a delivery shoot. In operation, portions of material are ripped off a bale, placed in the hopper, by teeth 32 and are fed along the rotor to be rubbed between teeth 28 and 39, the fibres, dust and pith thus freed passing out through shoot 18 to be separated in a subsequent operation. Teeth 28 may be provided on the upper half only of the casing, to facilitate cleaning of the machine.
Patent GB-495354-A (GB)
Title: Improvements in or relating to self-locking screws
IPC: F16B39/286
Filed: 1937-11-25
Abstract: 495,354. Self-locking screws. EATON MANUFACTURING CO. Nov. 25, 1937, No. 32499. Convention date, April 22. [Class 89 (i)] A self-locking screw 15, particularly applicable for adjusting valve tappets, comprises a shank portion with a pair of axially spaced threaded sections 17, 18, the leads of the threads of which are relatively offset axially, a tapered portion interconnecting the two threaded sections, and an axially extending diametrically disposed slot 19 in the end of the shank. The threads of sections 17, 18 may be of the same pitch, and the slot 19 may extend as far as the section 17. To prevent the threaded section 18 from binding with the threads 11 inside member 10, the sides of this section are relieved, as by means of the flattened surfaces 22, Fig. 5, substantially perpendicular to the slot 19. U.S.A. Specification 2,035,055 is referred to.
Patent GB-536277-A (GB)
Title: Improvements in or relating to manually operated control valves for power transmission systems
IPC: F15B13/08
Filed: 1939-12-20
Abstract: 536,277. Valves. VICKERS, Inc. Dec. 20, 1939. No. 32633. Convention date, Dec. 31, 1938. [Class 135] A manually operable pressure controlling valve for use in power transmission systems is housed in a casing adapted to be associated in a valve bank with adjacent similar housings and comprises a valve member displaceable in a longitudinal recess in the casing provided with transverse pressure, exhaust and motor ports. Means associated with the valve and subject to the pressure in the motor port tend to move the valve member in the direction to connect the motor port to exhaust against the action of a spring load controlled by a manually operable plunger. Figs. 4 and 5 show two such valves 28, 30 adapted to control the power operation of a clutch and brake respectively while a third valve of somewhat different construction controls the power operation of a reversing gear. The several valve casings are clamped together between end plates 22, 32 the plate 22 having a pressure inlet port connected by a passage 158 with a pressure supply passage 118 extending through the bank. Similar exhaust passages 120, 121 connect with a passage 168 on the end plate 32 which passage leads to an exhaust 34 coupled to a return pipe line. Chambers 102, 104, 136, 138 lead to the ends of double-acting cylinders for operating the clutch &c. A byepass passage 106, 108, 122, 124 connects the passages 158, 168 and a leakage-discharge passage 178 is connected to the passage 168. The valves are loaded towards their neutral position by springs 112, 116 and small pistons 154 subject to the pressures in the chambers 136 are associated with the valves 28, 30. Movement of the valve 26 from its central position in which it blanks off. both the chambers 102, 104 opens one chamber to pressure while connecting the other to exhaust and at the same time closes the byepass passage. The valves 28, 30 in their neutral position connect both chambers 136,138 to exhaust while movement of the valves in a downward direction by the compression of a loading spring 144 housed in a manually operable plunger 140 connects the chamber 136 to pressure while leaving the chamber 138 connected to exhaust. As pressure builds up in the chamber 136 and beneath the piston 154 the valve is moved back to the position in which the pressure supply port is just closed. Upward movement of the valve which may be effected by relieving the spring load or positively by the engagement of pins 148 with the lower ends of slots in the plungers 140, permits fluid to be drawn into the chambers 138 or admits pressure to these chambers while connecting the chambers 136 to exhaust. A relief valve is arranged between the passages 158 and 100.
Patent GB-397858-A (GB)
Title: Improvements in electric signalling systems
IPC: G07C3/10
Filed: 1931-11-25
Abstract: 397,858. Impulse transmitters. BURGESS, A. F., 10, New Court, Lincoln's Inn, London.-(Temporator Co. ; 540, Orleans Street, Chicago, U.S.A.) Nov. 25, 1931, No. 32696. [Class 40 (iv).] An impulse transmitter of the dial type transmitting impulses at springs V1, V2 by cam V3 on return of the dial after setting, has a further pair of springs V4, V5 normally opened by an arm V6 but closed when the dial moves off normal to transmit an impulse for stepping a distributer in a signalling system.
Patent GB-1154204-A (GB)
Title: Automatic Flow Diverter Valve
IPC: F15B13/02
Filed: 1966-07-21
Abstract: 1,154,204. Power steering systems. INTERNATIONAL HARVESTER CO. 21 July, 1966 [24 Aug., 1965], No. 32735/66. Heading B7H. [Also in Division F2] A valve for dividing flow between the power steering and power lift circuits on a vehicle, comprises a body having a bore 30 closed at both ends, a spool 51 reciprocable in the bore and having end parts 56, 57 to form first and second chambers 62, 63, an inlet port 33 and first and second outlet ports 31, 32 communicating with the bore intermediate the chambers, and means carried by the spool for varying the fluid flow through the bore from the inlet port to the outlet ports in accordance with the position of the spool, means 58, 48 and 59, 49 allowing fluid to bleed from the inlet port via the chambers 62, 63 to the outlet ports, the spool being movable in response to the pressure difference between the two chambers to divert a substantial portion of the fluid flow to the outlet port demanding an increased flow. The other outlet port receives a bleed flow until one of the end ports 56 or 57 compresses a spring 70 or 71 and engages the end 38 or 39 of the bore to close the bleed orifice 58 or 59. The outlet port 31 may be connected to a valve operated by the steering wheel of the vehicle while the port 32 is connected through a three position valve to a lifting ram for a back hoe.
Patent GB-300279-A (GB)
Title: Process for the manufacture of quinoline indol compounds
IPC: C07D209/82
Filed: 1928-11-09
Abstract: 300,279. I. G. Farbenindustrie Akt.- Ges. Nov. 11, 1927, [Convention. date]. Void [Published under Sect. 91 of the Acts]. Quinoline-indole compounds, of the kind in which the indole nucleus is connected at its 2 : 3- position with the aromatic part of the quinoline nucleus, are prepared by converting a Bz-aminoquinoline into a carbazole by the usual methods, or by subjecting an aminocarbazole to the quinoline synethesis. The products are useful therapeutically and also as intermediates for the manufacture of other pharmaceutical compounds and dyestuffs. According, to the example, a .quinoline-indole of the formula is prepared by combining 6-metboxy-8-aminoquinoline with 1-bromo-2-nitro-4-methoxy-benzene by heating in a sealed tube with alcohol, sodium acetate and a little copper bronze, then reducing The nitro group to the amino group by means of iron and boiling water, diazotizing the product, and finally heating the resulting azo-amino compound in a-methylnaphthalene as solvent with addition of a little copper bronze until the evolution of nitrogen ceases.
Patent GB-1480646-A (GB)
Title: Method for measuring flowrates of fluids in a borehole
IPC: E21B47/10
Filed: 1974-07-26
Abstract: 1480646 Measuring fluid flow-rate electrically SCHLUMBERGER Ltd 26 July 1974 [27 July 1973]  33115/74 Heading G1N A method for measuring flow-rate of fluid in a borehole 10 using e.g. a turbine type flowmeter 22, the electrical signal from which is a substantially linear function of the flow-rate relative to the flowmeter involves making a first series of recordings of the signal 30, 31, 32 whilst moving the flowmeter down the borehole at a different constant speed V 1 , V 2 , V 3  for a respective recording of the series, each of the speeds being greater than the upward fluid flow-rate at a level A located between perforations 16 and 15 in the borehole casing 12, then making a second series of recordings while moving the flowmeter up the borehole at a different constant speed (V' 1 , V' 2 , V' 3 ) Fig. 3 (not shown) for a respective recording of the series, each of the speeds being greater than the upward fluid flow-rate at the level A. A third series of recordings of the flowmeter signal is made while holding the flowmeter stationary at each of the four levels A, B, C, D of the borehole. The results are shown in Fig. 5. For the level A, the first series of recordings gives three points 41, 42, 43 to which a straight line 47 is fitted and the second series of recordings gives three points 44, 45, 46 to which a straight line 50 is fitted. These lines have the same slope and are offset on the abscissa by a value d 1 . This corresponds to the range where the difference between flow-rate and flowmeter movement speed is insufficient to overcome the resistance to rotation of the flowmeter screw or shaft. This resistance is experienced regardless of the direction of flow relative to flowmeter movement. The value d 1  thus corresponds to twice the flow-rate threshold for which the screw would begin to rotate with the flowmeter stationary. Thus the response law of the flowmeter is represented by a straight line 51 parallel to lines 47, 50 and making an intercept S on the x-axis equal to <SP>d</SP>¢. For highest accuracy the operation may be carried for levels A, B, C to give a mean intercept value V o  =1/3(d1/2 + d2/2 + d2/2). The flow-rate at each level may then be obtained by applying the response law to the screw rotating speeds obtained with the flowmeter stationary Fig. 4 (not shown). Alternatively the flow-rate at a level B, for example, is obtained by plotting the horizontal straight line from the intercept 60 on the y axis of the straight line 52 to a point of intersection with the line 51 representing the flowmeter response law. A vertical is dropped from this point to the x-axis to give an intercept point 61 representing the flow-rate V B  at the level B. This flow-rate corresponds to the rate at the centre line of the well and is multiplied by an empirical coefficient 0À83 to obtain the average flow-rate at this level.
Patent GB-520605-A (GB)
Title: Protective arrangement for thermionic valve apparatus
IPC: H03F1/54
Filed: 1938-11-15
Abstract: 520,605. Protective cut - out systems. STANDARD TELEPHONES & CABLES, Ltd. Nov. 15, 1938, No. 33184. Convention date, Nov. 16, 1937. [Class 38 (v)] [Also in Group XL] The radio frequency source 1 of a transmitter is connected to the antenna 9 over an amplifier 3, transmission line 4, tuning coils 5, 6, and coupling and antenna condensers 7, 8. The cathode circuit of the valve 3 includes a gridbiasing resistance 11 and a resistance 12 which normally is short-circuited by contacts of a relay 13 having its coil connected between an earthconductor 10 and the inner conductor of line 4, preferably on the amplifier side, and in series with a battery 14 or L.F. alternating source. If, due to lightning or power-current overloading, a discharge to earth takes place from the part of the high-frequency system to which relay 13 is connected, the latter opens its contact to apply a blocking bias to the valve and prevent the transmission of power-current so long as the discharge lasts. A H.F. choke 15 and condenser 16 segregate the main and auxiliary currents, and a H.F. choke provides a conductive or L.F. connection shunting condenser 8.
Patent GB-1044459-A (GB)
Title: Improvements in plasma diodes
Inventor: DEVIN BERNARD
IPC: H01J45/00
Filed: 1965-08-03
Abstract: 1,044,459. Thermionic generators. COMMISSARIAT A L'ENERGIE ATOMIQUE. Aug. 3, 1965 [Aug. 25, 1964], No. 33226/65. Heading H1D. [Also in Division G6] A thermionic generator comprises one or more reservoirs 8 containing a compound 10 of an alkali metal in the linked or combined state and a low work function metal 11, either volatile or incorporated in a volatile product, which, during operation of the generator forms a coating on the emitter 2 and/or collector 4. The alkali compound 10 may be a compound of insertion into graphite of Cs, or K-Cs or K-Rb alloys, which may be operated at a temperature of 700 C. to give a partial pressure of 2 mm. of Hg. The low work function metal 11 or compound thereof may be Be, Mg, Ca, Sr, Ba, Na, Li, Po, La, U, Be, Ce, Sm, Th, Zn, BaO, LaB 6 , and may be housed in a separate reservoir, Fig. 2 (not shown), at a different temperature from compound 10, the reservoir temperatures being dependent on the thickness of walls 12, 13. As shown, the generator comprises a plurality of series-connected diodes, each having a uranium carbide emitter 2 and a niobium or rhenium collector 4 cooled by circulation of a molten Na-K alloy through chamber 5, and forming the core of a nuclear reactor. The diodes include insulators 1a of alumina containing yttrium oxide.
Patent GB-202898-A (GB)
Title: Improvements in work supporting arms for sewing machines
IPC: D05B27/02
Filed: 1922-12-06
Abstract: 202,898. Thompson, W. P., (Union Special Machine Co.). Dec. 6, 1922, Sewing-machines; frames.-The terminal portion of a tubular work-arm enclosing the looper &c. is formed in two parts, one part 14 being fixed to the body of the work-arm and the other part 15 pivoted to turn about an axis parallel to that of the The section 14 is secured to the arm by a bolt entering a slotted flange. The section 15 is connected to the section 14 by a pivot 19 entering lugs in the two sections and is latched in closed position by a catch 27 which may be forcibly disengaged by pressure applied to a thumb-hold 26 on the section 15. The sections are formed with end flanges 17<a> 25 which close the end of the work-arm. Thread is led to the threaded looper 9 along a slot in the workarm closed by a plate 31 and guided by a wire 33 to the heel of the looper.
Patent GB-1198713-A (GB)
Title: Improvements in or relating to Vehicle Wheel Suspension Assemblies.
IPC: B60G15/07
Filed: 1967-07-20
Abstract: 1,198,713. Vehicle suspension. BAYERISCHE MOTOREN WERKE A.G. 20 July, 1967 [22 July, 1966], No. 33433/67. Heading B7D. [Also in Division F2] In an independent suspension comprising a telescopic vibration damper 8, to one member of which is attached a wheel support member 4, a coil spring 2 and a lower guide arm 5, bending moments set up in the vibration damper are opposed by asymmetric stressing of the spring so as to apply to the strut a banding moment in opposition to the bending moment applied by the wheel, e.g. by locating the coil spring between parallel plates 10, the spring either having a straight axis, 6, Fig. 2, with its end coils inclined, or having a curved axis as shown in Fig. 3. Alternatively, an even coiled spring may be located between inclined end plates 13 as shown in Fig. 4.
Patent GB-485484-A (GB)
Title: Improvements relating to receptacles for smokers' ash
IPC: A24F19/00
Filed: 1936-12-07
Abstract: 485,484. Smokers' ash receptacles. JONES, S. N. Dec. 7, 1936, No. 33474. [Class 130] An ash receptacle for public vehicles &c. comprises a base plate 4 having a central aperture 4a and a receptacle 5 hinged to the plate so as to lie normally in a recess in a seat or fitting to which the plate is attached. The receptacle is totally enclosed except for a slot in the front wall, and is normally retained in the closed position by a screw 6b, Fig. 2, operated by a key, or by a ball catch 7, Fig. 3.
Patent GB-1046038-A (GB)
Title: Electro-magnetically actuated switch
Inventor: WIGHTMAN ERIC JEFFREY
IPC: H01H50/30
Filed: 1962-08-31
Abstract: 1,046,038. Electromagnetic relays. SPERRY GYROSCOPE CO. Ltd. Aug. 23, 1963 [Aug. 31, 1962], No. 33488/62. Heading H2B. A balanced permanent magnet armature 1 is pivotally mounted between the polepieces 6, 7 of an electromagnet and is normally held in one or other of its extreme positions by the permanent magnetism. Asymmetrical, curved extensions 10, 11 of the polepieces ensure that the armature does not stall in an intermediate position. An edge cam 25, 26 secured to a disc 2 is rotatable with the armature and actuates a change-over contact set 14, 16, 17, 18 and a make-and-break contact set 15, 22. Contacts 14, 15, 16 are secured to a housing 13, contacts 17, 18 are carried by a spring strip 19 secured to the housing and contact 22 is carried by another strip 24 secured to the housing. Pins 20, 21, 23 carried by the strips co-operate with the edge cam and two insulating separators 27, 28 are arranged to be interposed between co-operating contacts as they separate to prevent sparking. All the contacts are made of permanently magnetized material. The ends of the armature are chromeplated to prevent sticking. In an alternative arrangement the armature is coated with contact material, e.g. " Silver Elkonite " (Registered Trade Mark) and acts as a change-over bridging contact between four fixed contacts. The polepieces of the electromagnet are covered with P.T.F.E. and the relay is sealed.