baber/WOPTO huggingface dataset:
Patent GB-956985-A (GB)
Title: Improvements in or relating to electric circuits including singlecrystal semiconductor resistors
IPC: H01C7/00
Filed: 1961-08-25
Abstract: 956,985. Semi-conductor devices; ohmic resistors. TELEGRAPH CONDENSER CO. Ltd. Aug. 25, 1961 [Sept. 19, 1960], No. 30690/61. Headings K1K and K1S. An ohmic resistor consists of a monocrystalline semi-conductor body containing impurity atoms which are fully ionised in the operating temperature range and yield a carrier concentration greatly exceeding the intrinsic carrier concentration within said temperature range, the impurity concentration being selected so that in the operating range the rate of change with temperature of the lattice scattering contribution to the mobility is balanced by the rate of change in the opposite sense of the carrier scattering contribution. Since the electronic charge is constant and the dimensional changes of the body with temperature are small the resistance of the resistor is substantially independent of temperature within the operating range. Outside the operating temperature range the resistance is temperature dependent. A typical resistor for use at room temperature consists of germanium doped with 10<SP>18</SP> atoms/cc. of phosphorus, arsenic or antimony. Ohmic contacts to the crystal, which is shaped to give the required value of resistance, are made by alloying using lead-arsenic alloy. The contacts to an indium doped germanium resistor are similarly made but using indium as contact material. The use of silicon as semi-conductor material is also mentioned.
Patent GB-1085871-A (GB)
Title: Improvements in mineral mining machines
Inventor: BARKER ARTHUR KENNETH
IPC: E21C35/06
Filed: 1963-08-02
Abstract: 1,085,871. Mineral-mining machines. COAL INDUSTRY (PATENTS) Ltd. Aug. 4, 1964 [Aug. 2, 1963], No. 30781/63. Heading E1F. Steering of a mineral-mining machine as it moves along a face is controlled by appropriate actuation of toggle linkage positioned between the motor-containing body and the skid base of the machine so that the body may be raised and lowered relative to the base so as to tilt the body about axis parallel to and transverse of the direction of motion of the machine as required by seam conditions.
Patent GB-209056-A (GB)
Title: Improvements in sheet-metal cans
Filed: 1923-12-07
Abstract: 209,056. Tjaaland, J. Dec. 22, 1922, [Convention date]. Opening by cutting or tearing. - In a can having the cover 4 secured by an upright seamed joint projecting above the general plane of the cover, a weakening line 5 is provided in the cover, either directly above, as shown, or outside the inner edge of the offset portion 3.
Patent GB-836529-A (GB)
Title: Improvements in or relating to polishing or abrading operations and in compositions for use therewith
Inventor: FELLOWS LESLIE HARRY ARTHUR
IPC: B24D15/00
Filed: 1958-09-26
Abstract: 836,529. Grinding and polishing. WALL Ltd., H. Sept. 26, 1958, No. 30879/58. Class 60. A bar 1 of polishing composition (for application to a rotary polishing member) or bobbing grease (for application to a rotary abrasive member) has a false end 2 the length of which is small compared with that of the bar and which is of sufficient rigidity to withstand the compressive force normally exerted on the bar by the feeding mechanism. The inner surface of the false end may have one or more undercut projections, e.g. dovetail 3, about which the material of the bar is moulded. The false end may be of wood and be provided with an eyelet 4, hook or staple for attachment of a cord, chain or rope to facilitate handling the bar. The false end may be a hollow construction of moulded plastic with an integral projection for the attachment of the handling means. The bar may be used in the automatic applicator of Specification 825,294, operation of the feeding mechanism being stopped when the inner surface of the false end is just short of the rotating polishing member or bob.
Patent GB-882701-A (GB)
Title: Star-section reinforcing bar for reinforced concrete
IPC: E04C5/03
Filed: 1958-09-29
Abstract: 882,701. Reinforcing loads. BUGAN, A. Sept. 29, 1958 [Sept. 28, 1957], No. 30999/58. Class 20(4) A reinforcing bar is geometrically of the shape shown, the intermediate points normal to the axis x-x being optional, and their omissions giving a hexagon shape. This hexagon shape may again be modified by the provision of intermediate points giving 12 points to the bar. The flanks are at 90 degrees or 30 degrees to the axes of the back.
Patent GB-1119979-A (GB)
Title: Improvements in and relating to the starting of gas turbine plant
Inventor: GRAF EMIL
IPC: F01D25/34
Filed: 1967-07-05
Abstract: 1,119,979. Gas turbine plant-starting. SULZER BROS. Ltd. July 5, 1967, No. 31031/67. Headings F1G, F1K and F1T. In a starting system for a gas turbine plant having a lubricating oil system, the starting system comprises a starting turbine which utilizes lubricating oil as working fluid, the working fluid of the starter turbine being connected to the delivery pressure region of the lubricating oil system, there being at least one pump for raising the pressure in the starter circuit. The gas turbine plant shown comprises a compressor 1, combustion equipment 2 and turbine 3, the turbine being connected to drive the compressor 1, also through gearing 4, a generator 5. The starter turbine 14 is permanently connected to the compressor-turbine assembly 1, 3 through gearing 16. The lubricating oil system comprises an oil tank 6, a lubricating oil pump 7 the delivery of which passes through line 8, oil cooler 10 to the line 11 and thence to bearings 12 and gearing 4, the oil returning through line 13. A by-pass line 26 containing a relief valve 27 is provided around the oil cooler 10. At starting, lubricating oil is taken from a point downstream of the oil cooler 10 and passes through line 17 and valve 19 which is then in the operative position shown, to a starting pump which increases the oil pressure from say 2 atmospheres to 30 atmospheres, the oil at this pressure passing to the starter turbine 14 which thus acts to start the plant. The oil discharging from the turbine passes through line 20 and valve 21 which is in the operative position shown back to the line 8 downstream of the discharge of the lubricating oil pump 7. Once the engine has started the valves 19 and 21 are rotated so that the starter system is cut off from the lubricating oil system, the oil in the starter system draining through lines 20, 25 and 22 back to the tank. An air vent system 31, 32 is connected in the starter system downstream of the turbine 14. A further oil cooler 29 may be provided in parallel with the cooler 10.
Patent GB-618695-A (GB)
Title: Improved method of manufacturing electrolytic devices, more particularly electrolytic condensers
IPC: H01G9/02
Filed: 1946-10-18
Abstract: 618,695. Electrolytic condensers. PHILIPS LAMPS, Ltd. Oct. 18, 1946, No. 31079. Convention date, Feb. 19, 1943. [Class 37] In making an electrolytic device such as an electrolytic condenser in which a diaphragm comprising an electrolytic mass containing silica gel is located between electrodes, the diaphragm after assembly with the electrodes, is impregnated with a solution capable of forming a silica gel and in the diaphragm is converted into the gel state, after the diaphragm has been impregnated with it. Impregnation of the paper or textile diaphragm is aided by a solution of saponified silicic acid ester, e.g. ethyl silicate converted into a state resembling a colloidal silicic acid solution by addition of methyl alcohol, so that on treatment with gelatinizing agents such as bases or acids, silica gel is set free. A weak acid, which may comprise boric acid, glycol, water and ammonia, may be added before impregnation, so that gel formation takes place slowly after impregnation. The silica gel so distributed is substantially free from metal ions. The condenser may be immersed in the liquid and formed during impregnation.
Patent GB-300237-A (GB)
Title: Improvements in or relating to double squirrel cage motors
IPC: H02K17/18
Filed: 1928-10-26
Abstract: 300,237. Siemens - Schuckertwerke Akt.-Ges. Nov. 9, 1927, [Convention date]. Alternating-current motors.-In a double squirred cage rotor of the Boucherot type, the magnetic flux density in the magnetic members which separates the two windings lies between 20,000 and 28,000 lines per sq. cm.
Patent GB-190879-A (GB)
Title: Improvements in float feed mechanism for carburettors
IPC: F02M1/00
Filed: 1921-11-22
Abstract: 190,879. Poppe, P. A. Nov. 22, 1921. Spray carburettors.-The float chamber B is provided with a guide tube A which projects through the bottom of the chamber and i; provided with a valve seating c and with fuel inlets and outlets a, F. The float E is fitted with a suitable clearance around the tube A and actuates the needle valve G, which is guided in the tube A, through levers H pivoted to projections j carried by the cover J. A fuel supply pipe connection D or' a filter chamber surrounds the lower end of the tube A and is held in position by a screw d. Specifications 26625/07 and 3162/11 are referred to.
Patent GB-940207-A (GB)
Title: Automatic stocking knitting machine
IPC: D04B9/46
Filed: 1960-09-12
Abstract: 940,207. Knitting-machines. M.S.MORETTA. Sept. 12, 1960 [Sept. 12, 1959], No. 31271/60. Heading D1C. Shaping of the heel and toe during reciprocatory knitting as well as needle selection for a split work sole is achieved on a stationary or rotary needle cylinder machine by the provision of a nib jack system designed to enable the desired needle selection by needle cams to be effected. In the case of a two feeder machine one feeder G1 is rendered inoperative during reciprocatory knitting and a selector cam 4 raises long butt jacks corresponding to the heel needles to an operative height in which they engage cams 6, 8 raising the needles to clearing height over leading stitch cams C, B. The cam 4 is then removed from operation. A control cam 7 engaging the butts of the inoperative jacks causes the leading and trailing operative jacks to be lowered by their nibs engaging the butts of the adjacent inoperative jacks. Similarly when it is desired to widen, the inoperative jacks adjacent the leading and trailing operative jacks raised by cams 6 and 8 are raised by the nibs and are further raised by cams 13 ... 16 after cams 9 ... 12 have been taken out of operation, Fig. 8. Shaping of a split work foot is similarly effected.
Patent GB-1466286-A (GB)
Title: Coating of tablets
IPC: A23G3/26
Filed: 1974-07-16
Abstract: 1466286 Coating drums EVANS MEDICAL Ltd 8 July 1975 [16 July 1974] 31414/74 Heading B2L Tablets in a coating drum 1 are coated with with liquid from tanks 13, 14 by a process which comprises allowing coating material into the drum, rotating the drum to mix and coat the tablets and subsequently passing air through the drum to dry'the coating and then repeating the process at least once; the drum has a temperature sensor therein which senses the temperature of the mixture during drying and when this reaches a reference temperature with which it is compared the drying process can be terminated automatically and the next cycle commenced. In Fig. 1 a drum 1 receives coating material from either of tanks 13, 14. Warm air from a heat exchanger 5 is blown by fan 4 into the drum and extracted by a vent 3E. A temperature sensor 16 is provided and the whole process is controlled from a coating control unit 6 which comprises counters, comparators; timers, alarm controls and flow meters.
Patent GB-519666-A (GB)
Title: Improvements in or relating to variable pitch aerial propellers
IPC: B64C11/42
Filed: 1938-07-29
Abstract: 519,666. Variable pitch airscrews. WASEIGE, C. R. July 29, 1938, No. 31478/39. Convention date June 23, 1938. [A Specification was laid open to inspection under Sect. 91 of the Acts, Jan. 31, 1939]. [Class 114] In a pitch varying device for tandem propellers driven by separate engines and operating separate pitch varying mechanisms, connection between the two operating systems is arranged so that should one engine be stopped the power for adjusting the blades is transmitted from the other engine. As shown, two propeller shafts 72, 73 are driven by engines Ma, Mb respectively. The shaft 72 transmits motion by a gear 117 to gears 114b' and 115a<1> and the shaft 73 by a gear 116 to gears 114a<1> and 115b'. The gears 115a<1>, 114b<1>, 114a<1>, and 115b' are each mounted on the driving element of corresponding clutches 113a<1>, 112b', 112a<1> and 113b' on respective shafts 81a<1> and 81b<1>. These shafts trarismit motion to clutch carrying shafts 14a<1>, 14b' which constitute part of the means for varying the pitch of the propellers. The pump 118a of the'engine Ma is connected by a pipe 125a through the bore of the shaft 81a' to the clutch 113b' and by a pipe 119a and shaft 81a<1> to the clutch 112a<1>. The other two clutches are correspondingly connected to the pump 118b of the engine Mb by pipes 119b, 125b and shaft connections. Valves 129a, 129b are provided which are normally closed but either of which may be operated if .one of the engines stop.
Patent GB-390768-A (GB)
Title: Improvements in apparatus for heat treatment of canned goods
IPC: A23L3/04
Filed: 1932-11-08
Abstract: 390,768. Cooking &c. canned goods. OMSTED, K., 65, Enebakveien, Oslo, Norway. Nov. 8, 1932, No. 31535. Convention date, Nov. 13, 1931. [Class 49.] Apparatus for cooking and then cooling canned goods comprises communicating heating and cooling chambers 1, 2, each filled with water or other liquid at the desired temperature, the cans being carried through the chambers by a conveyer 12 which passes over guide wheels 15 providing a zig-zag path in the chambers. The conveyer 12 enters and leaves through open-topped extensions 7, 8 which are sufficiently high to provide a pressure appropriate to the temperature. The chambers 1, 2 may be separated by a partition 3, preferably of heat-insulating material and communicate through a narrow elongated channel 4. The chamber 1 is heated by a steam-pipe 5 and has a drainage outlet 9 through which condensed water is returned to the boiler. A cold water inlet 11 and an overflow 10 is provided in extension 8, and a pipe 6 removes from chamber 2 water which has become heated. Alternatively, the chambers 1, 2 may be wholly separate with a communicating channel. The conveyer comprises a pair of chains 13, 14 to which are connected cam-holders 17, Figs. 2 and 3, at diagonally opposite corners so that the frames will not tip on moving through the apparatus, the sprocket wheels 15 for the chains being staggered in relation to one another. The cans 20 are caused to rotate by contacting with plates 21, 22 in the chambers. If the cans are not round, these plates may be given a wave-like form to impart a rocking movement.
Patent GB-483462-A (GB)
Title: Improvements in or relating to coke oven batteries
IPC: C10B29/04
Filed: 1937-11-17
Abstract: 483,462. Coke-oven bracimgs. GROVES, W. W. (Otto & Co., Ges., Dr. C.) Nov. 17, 1937, Neo. 31611. [Class 51 (ii)] In a regenerative cokeoven battery having in the regenerator structure transverse walls 4 intermediate the supporting-walls 3, which are braced by the main buckstays 10, separate short bracing elements 7, preferably supported from the buckstays 10, are provided for the walls 4.
Patent GB-1341155-A (GB)
Title: Dithiophosphoric acid esters having insecticidal acaricidal and nematocidal properties
IPC: A01N57/16
Filed: 1972-07-06
Abstract: 1341155 Dithiophosphoric acid esters BAYER AG 6 July 1972 [7 July 1971] 31717/72 Heading C2P Novel compounds of the general formula wherein R<SP>1</SP> is methyl or C 1 -C 6  alkoxy, R<SP>2</SP> is hydrogen or methyl and n is 1 or 2 are obtained either (a) by reacting a salt: with a halide: or (b) by reacting a salt: with a compound: Hal-CH(R<SP>2</SP>)CH 2 R<SP>1</SP>, M in the formulµ being a metal or ammonium and Hal being halogen. The reactions are preferably carried out in an inert solvent or diluent and an acid binding agent may be present. The products have insecticidal, acaricidal and nematocidal properties and may be used as active ingredients in conventional pesticidal compositions.
Patent GB-1354744-A (GB)
Title: Encoding of binary data
IPC: G11B20/14
Filed: 1971-07-06
Abstract: 1354744 Digital data storage HONEYWELL INFORMATION SYSTEMS Inc 6 July 1971 [24 Aug 1970] 31748/71 Heading G4C To reduce the effects of pulse-crowding on a magnetic storage medium, each group of n data bits is encoded into a code combination having a larger number of bits but the minimum number of transitions possible. A group of 3 bits may be encoded into a 5-bit combination containing not more than 2 "1" bits, the average number of transitions per bit being reduced from 1À5 to 0À45. The input data may be shifted serially into a first shift register from which it is transferred in parallel to an encoder and then to a second shift register from which the re-encoded data is read out serially to a write head. A similar arrangement operating in reverse may be used for reading out data from the storage medium. A flip-flop counter may be used to control read-in/read-out of successive groups of data bits into/from the registers.
Patent GB-1154207-A (GB)
Title: Electrographic Developing Apparatus
IPC: G03G15/10
Filed: 1966-07-14
Abstract: 1,154,207. Electro-graphic development. EASTMAN KODAK CO. July 14, 1966 [July 14, 1965], No.31765/66. Heading G2H. An electrostatic image on a record member is developed by progressively laying the member on a development plate with the simultaneous introduction therebetween of developer liquid, and subsequently stripping the member from the plate. The record member is inserted in arcuate slots 10 and 12 in plates 6 and 8 of a shuttle 2, and its leading edge attached to a fixed development plate 24 by a clamp 30. By moving shuttle 2 on its guide rods 14 and 16 away from clamp 30, the record member is progressively laid down on plate 24, liquid developer being applied to the plate from a reservoir 12 via a manifold 38 mounted on the shuttle; by returning the shuttle the record member is progressively stripped from the plate 24; the developed member is then released from clamp 30. Development plate 24 maybe a gravure, typographic, or sintered metal plate or a flat-plate having an overlying mesh screen. In modification, the grooves 10, 12 are not arcuate and/or the development plate is movable.
Patent GB-833252-A (GB)
Title: Improvements in or relating to sealing arrangements for pipe joints
Inventor: HAMPE ERHARD
IPC: F16L17/073
Filed: 1956-10-19
Abstract: 833,252. Pipe joints. INGENIEURTIEFBAU BRANDENBURG VEB. Oct. 19, 1956. No. 31914/56. Class 99(1). In a pipe joint particularly between prestressed concrete pipes, a packing ring 1 between the opposing pipe ends 7 is penetrated by an axially extending steel ring 3 projecting from one of the pipe ends and is surrounded by an annular steel ring 6. As shown, ring 1 has sealing lips 4 which engage in wedge shaped recesses 10 in the pipe ends, the recesses being wider than the lips so as to allow the insertion of rubber pressure rings 8 which force the lips into sealing contact. The angle of slope of the sealing surfaces of the lips may differ from that of the sealing surfaces of the recesses. The steel ring 6 is set in a recess and may be secured to one of the pipe ends or slidably fitted in position. In modifications, Fig. 2 (not shown), the sealing lips are accommodated in annular recesses formed in the bore of the pipes the opposing ends of which have recesses which provide a cavity for the reception of the packing ring, the steel rings are embedded in the opposing end faces of the pipes and a rubber ring is provided between the end faces. In Fig. 3 (not shown), the packing ring is located in a cavity formed by recesses in the pipe ends which have shoulders against which the lips abut and against which the internal pressure forces the lips into sealing engagement, steel rings and a rubber ring being provided as before. The sealing lips or surfaces of the packing ring may be bonded to their complementary surfaces or spring loaded to assist sealing engagement.
Patent GB-152547-A (GB)
Title: Improvements in or relating to lockers for use in the delivery of goods to houses
IPC: A47G29/20
Filed: 1919-12-19
Abstract: 152,547. Hansen, J. P. Dec. 19, 1919. Receiving and delivery devices for doors.-A device for use in the delivery of goods to houses comprises a locker having one or more compartments each provided with a pivotally-mounted bottom 2 supported by a. spring 3 fixed to a block 13. When an article is deposited on the bottom 2, a spring 4, fixed thereto, presses a hook 6 on a double-armed lever 7 into engagement with a catch 8 on the door 11 of the compartment, which is thus automatically locked. The compartment may be opened from the rear by a rod 9, a bent portion 15 of which, when the rod is turned, lifts the hook 6 from engagement with the catch 8 and releases the door 11.
Patent GB-828381-A (GB)
Title: Safety-glass laminates
IPC: B32B17/10
Filed: 1957-10-15
Abstract: 828,381. Laminated glass. DU PONT DE NEMOURS & CO., E. I. Oct. 15, 1957 [Oct. 18, 1956], No. 32110/57. Class 140. A safety-glass laminate comprises a layer of plasticized polyvinyl butyral bonded on one side to a sheet of glass and on the other side to a sheet of biaxially oriented polyethylene terephthalate. A further layer of plasticized polyvinyl butyral and a layer of glass may be bonded to the other side of the polyethylene terephthalate sheet. The surface or surfaces of the polyethylene terephthalate sheet contiguous with the layer or layers of polyvinyl butyral is preferably subjected to direct contact with a flame before laminating. In the examples lamination is effected by pressing the layers together at elevated temperatures. A fivelayer laminate having a central layer of polyamide is described for purposes of comparison, as also are surface-treatments of the polyethylene terephthalate with nitric acid, aqua regia, and solutions of potassium permanganate, chromic acid in water and chromic acid in sulphuric acid in place of the flame treatment. Specification 704,665 and U.S.A. Specifications 2,648,097, 2,683,894 and 2,704,382 are referred to.
Patent GB-1312543-A (GB)
Title: Method of making a frame for a tennis racket
IPC: A63B49/02
Filed: 1971-07-08
Abstract: 1312543 Tennis racket J ROBIN and M GUYOT 8 July 1971 [29 July 1970] 32140/71 Heading A6D [Also in Division B5] A blow-moulded tennis racket frame is formed (see Division B5) from two braided fibre glass tubes 5 impregnated with polymerisable material and enveloped in a third braided tube 6, the tubes 5 having inner sheaths 4 which are inflated while the material is polymerised in a mould 10 so that the tubes join together to form an internal reinforcing rib 7. Tubular cores (not shown) which may be perforated may be removed after polymerisation. The tubular structure is positioned along paths 11, 12 around voids 15 and 16 to form the head and "heart" respectively of the racket. Alternatively or additionally a path 13 (Fig. 6, not shown) which crosses itself between the voids 15, 16 may provide better reinforcement.