baber/WOPTO huggingface dataset:
Patent GB-409385-A (GB)
Title: Improvements in or relating to rock-boring tools
IPC: E21B10/58
Filed: 1932-10-31
Abstract: 409,385. Drill bits. SIEMENSSCHUCKERTWERKE AKT.-GES., Siemensstadt, Berlin. Oct. 31, 1932, No. 30674. Convention date, Oct. 31, 1931. [Class 83 (iii).] The inserted hard metal cutter of a boring bit is provided on both cutting faces at the point with a depression such that the width of the cutter at the point is reduced, the depression extending in the axial direction of the bit and being relatively small in breadth as compared with the length of the cutting edge. A hard metal inserted cutter 14 of tungsten carbide or the like carried between the wings 13 of a boring bit 11 has depressions 17 which reduce the width of the cutting portions at the point.
Patent GB-173925-A (GB)
Title: Grinding attachment for lathes and like machines
IPC: B24B27/00
Filed: 1921-03-19
Abstract: 173,925. Wilson, J. Y., Mathison, W., and Wilson, J. E. March 19, 1921. No Patent granted (Sealing fee not paid). Round holes, enlarging and trueing.-A grinding-attachment for a lathe or like machine comprises a grinding-wheel a carried by a hollow spindle c, which is mounted on the face-plate of the machine and is adjustable radially thereof to produce the required diameter of work, the grinding-wheel thus having a planetary motion. The spindle is mounted by ball bearings d on a pin e, which is screwed to a block f provided with a recess to engage a dovetail-guide g. The guide is secured to the face-plate h and the block is adjusted by a screw q having a graduated operating- head. The spindle is driven by a belt m. from a shaft p, Fig. 4, and the slack of the belt, due to the varying distance between the spindle and the shaft, is taken up by a pulley x carried by a weighted lever 4.
Patent GB-308170-A (GB)
Abstract: 308,170. Canadian Electro Products Co., Ltd., (Assignees of Skirrow, F. W., and Morrison, G. 0.). March 17th, 1928, [Convention date ]. Esters.-Carboxylic acid esters are prepared by reacting together acetylene gas and carboxylic acids in the presence of a catalyst, and continuously removing the ester from the reaction mixture. Vinyl acetate is prepared in this way by reacting together acetylene and acetic acid in the presence of a catalyst at a temperature between 20‹ and 60‹ C., the product being continuously removed in an excess of acetylene gas from the reaction mixture and separated from the acetylene by condensation, a second condensation being carried out at a lower temperature. The catalyst may be prepared by reacting acetic acid with mercuric oxide at a temperature of 45‹ C., and precipitating the mercuric acetate from solution by means of fuming sulphuric acid at 85‹ C. or above. Varying amounts of ethylidene diacetate are formed according to the temperature used. Specification 308,169 is referred to.
Patent GB-660766-A (GB)
Title: Improvements in or relating to stringed musical instruments
IPC: G10C3/16
Filed: 1949-12-01
Abstract: 660,766. Stringed musical instruments. SJOLANDER, J. Dec. 1, 1949. No. 30858/49. Class 88 (ii). In a keyboard instrument, depression of a key 2 pulls down against a spring 18 a slider 9, holding the forward end of a string 3 which is thereby brought into contact with an endless bowing band 5 driven by an electric motor 6 under the control of a brake 10. The band 5, which is preferably of plastic material and runs on a felt bed 17, is slightly twisted so that it is parallel to the plane of the strings at the bass end of the instrument, Fig. 2, but inclined to it at the treble end, Fig. 3 (not shown). The rear ends of the strings are attached by screws 11 to a rigid frame 12 carrying a soundboard and having a front flange 14 over which the sliders 9 move on rollers 13. The centre of curvature at any point on the front face'of the flange 14 coincides with the rear end of the adjacent string, so that the length and tension of the string are not affected by the movement of the slider 9.
Patent GB-1311715-A (GB)
Title: Process for the production of fuel and or breeder elements for nuclear reactors
IPC: G21C3/62
Filed: 1970-06-25
Abstract: 1311715 Fuel elements KERNFORSCHUNGSANLAGE JULICH GmbH 25 June 1970 [27 June 1969] 30868/70 Heading G6C A fuel element comprises a mass of coated particles of fuel and/or breeder material with bridges of pyrolytic material between the particles. The bridges may be formed by the pyrolysis at a temperature between 1200 and 2100 C. of a gaseous hydrocarbon such as methane, acetylene or benzene and/or a chloromethyl silane such as Cl 3 SiCH 3  or Cl 2 HSiCH 3  whilst passing through a graphite can containing a mass of the particles. A gaseous mix including an inert gas such as A, He or N 2  may be used. The chloromethyl silane may be passed through the graphite can in a stream of H 2 . The bridges are formed of pyrolytic carbon and/or SiC. Where a zirconium compound such as ZrCl 4  is mixed with a gaseous hydrocarbon, the bridges include ZrC. The particles have a diameter of a few hundred microns and may be coated with pyrolytic carbon and/or carbides (e.g. SiC and ZrC) and/or oxides (e.g. BeO and Al 2 O 3 ). In one example, particles of 600 Á diameter and coated with pyrolytic carbon and SiC were put into a graphite can, the bottom of which had a large number of small holes formed in it, and the can was supplied from below with a gas mixture of methane and argon. The can was heated by means of an induction coil to 1500 C., the top of the can being heated first. The induction coil was then moved gradually down to the bottom end of the can. The composite body formed by the pyrolysis of the methane, resulting in carbon bridges being formed between the particles, had a porosity of 15%. A fuel element formed by enclosing such a composite body in a graphite can may be effectively cooled by passing an gaseous coolant, e.g. helium, through the composite body.
Patent GB-474412-A (GB)
Title: Improvements in and relating to internal combustion ramming devices
IPC: E02D7/12
Filed: 1936-11-13
Abstract: 474,412. Power - hammers. MECOBRENNKRAFT - MASCHINEN GES. Nov. 13, 1936, No. 31079. Convention date, Jan. 29. Addition to 474,395. [Class 83 (iv)] In hammers acting on Diesel cycle of the type described in the parent Specification, the fuel pump 7 is actuated by a rod 24 sliding in guides in a bracket 20, which is of semicylindrical section and constitutes the lower cross piece 17 for the guide rods 18 on which the ram slides. A working cylinder 4 is thrown into the air by igniting fuel air mixture above the piston therein. The fuel is injected by a nozzle 14 from the fuel pump 7, actuated by a rod 16 having a collar 22 against which bears a spring 23 of sufficient strength to withstand the pump pressure but yieldable to greater pressures.
Patent GB-1455023-A (GB)
Title: Diaphragm pump
IPC: F16K17/08
Filed: 1973-11-06
Abstract: 1455023 Diaphram pumps WANNER ENG Inc 6 Nov 1973 31082/76 Divided out of 1455022 Heading F1A In a reciprocating diaphragm pump a pressure control and unloader valve has a check-valve formed by a spring-loaded valve-member 117 and a movable seat 104 disposed between a pressure control chamber 94 and a discharge chamber 18, and an unloader valve 26 formed by an adjustably biased closure member 96 disposed between the control chamber 94 and the suction chamber 88. The arrangement is such that the unloader valve opens if the pressure in chamber 94 rises above a predetermined value or if a pressure wave formed in the discharge chamber as a result of a sudden shut-off at the discharge end is sufficient to overcome the spring bias 95. In the latter case the valve-member 117 closes and then the valve-member and seat move as a unit to open the unloader valve. The pump has three piston assemblies each formed by a piston 48 which is reciprocated by a cam plate (21) on an electric motor driven shaft (13). Bronze feet 54, 58 are disposed between the plate (21) and the piston which feet rock on their hemispherical end surfaces during reciprocation. Fluid in chamber 61 between the piston and a diaphragm assembly 41 causes the latter to reciprocate to pump fluid from chamber 88 to chamber 94 via suction and discharge valves 40, 39. Leakage of fluid from chamber 61 past piston 48 is made up from chamber (17) via spring-loaded check-valve 62. In modifications the valve 62 may be provided in the piston.
Patent GB-657337-A (GB)
Title: Improvements in or relating to machines for moulding crushed, pulverised, plastic and like materials
IPC: B30B11/20
Filed: 1948-12-02
Abstract: 657,337. Roller-and-ring extruding-machines. BOYNTON, T. E. Dec. 2, 1948, No. 31234. [Class 87 (ii)] [Also in Group II] One or more rollers 25 are journalled on arms 24 pivoted at 23 to a beam 22 fixed on a rotating shaft 7. As the beam rotates, the rollers press material through holes 5 in a stationary ring 4, and the material issuing from the holes is cut off by rotating knives 20. The shaft 7 rotates quickly, and the rollers 25 are urged centrifugally against the ring 4. The shaft 7 is driven by an electric motor 12 via shaft 10 and gears 9, 8. The knives are carried by a toothed ring 17 which runs in a groove G in the ring 4 and on rollers 17a. The ring 17 is driven, by gear 16 from shaft 10, in the same direction as the rollers 25. Ploughs or deflectors 28, secured to a sleeve 27 which depends from and rotates with the beam, lead the material into the path of the rollers. Material is fed into the extruding chamber by a regulator 30 from a hopper 29. The material may be animal feed or coal dust. In modifications (not illustrated) the ring 4 may rotate, in the same direction or opposite to that of the rollers, in which case the knives are stationary.
Patent GB-702755-A (GB)
Title: Process for the production of organo-polysiloxanes
IPC: C08G77/00
Filed: 1950-12-22
Abstract: In making polysiloxanes, one or more silanes of the formula Rn Si X4-n, where R is a hydrocarbon radical, X is a hydrolysable radical and n is 1, 2 or 3, are hydrolysed in the presence of butylacetate. Butanol may be used together with the ester.  In examples (1) a mixture of methyltrichloro- and dimethyldichloro-silanes, (2) together with phenyl trichloro- and diphenyl dichloro-silanes, and (3) dimethyl dichlorosilane, are hydrolysed in the presence of butylacetate; (4) the silane mixture of example (2) is hydrolysed in the presence of butylacetate containing butanol.  The products may be used as hydraulic fluids or for lacquer coatings.
Patent GB-499533-A (GB)
Title: Improvements in or relating to overload tripping devices for automatic circuit breakers or similar electrical switchgear
IPC: H01H71/40
Filed: 1937-11-16
Abstract: 499,533. Electrically - released switches ; arc - rupturing in switches. CRABTREE & CO., Ltd., J. A. (Schiele Industriewerke) Nov. 16, 1937, Nos. 31427 and 31428. [Class 38 (v)] A circuit-breaker comprises a heat sensitive trip disposed in a heat-insulating box for opening on sustained normal overloads, and an electromagnetic trip disposed in a recess outside the box so as to be thermally insulated from the thermal trip, and adapted for opening on abnormal overloads. The poles of the magnet may extend in proximity to the breaker contacts for arc-quenching purposes. In the three-phase example shown, the heat-insulating box 1 is partitioned at 1a to form three releasecontaining chambers 2 and a chamber 3 accommodating the ambient-temperature compensating means and an auxiliary switch controlling the main tractive-magnet coil and adapted to be opened by the trip member 4 pivoted at 13. Each chamber 2 contains a U-shaped thermal strip 5 embracing a heating coil 6 in the associated phase, the arrangement being generally as described in Specification 498,325. An external recess 15 formed in the box 1 below each lever of the trip member 4, receives an electromagnetic trip the poles 16 of which have extensions 17 on each side of the fixed contact 18, these extensions having projections 20 engaging retaining holes 21 in the recess-wall. The coil 22 is on a core extending between the poles, and the armature 24 is on a spring-loaded pin 25 which extends between the poles through the upper recess wall for operating the associated trip lever, the armature-travel being suitably restricted so as not to weaken the blow-out field unduly. Hollow or cavity walls may be provided for the partitions la and end-walls 1b of the box, and the position of the depending arm 12 of each trip lever assists the thermal isolation. Specification 439,242 is referred to in the second Provisional Specification.
Patent GB-175044-A (GB)
Title: Improvements in and relating to the manufacture of duplex or splinterless glass
IPC: B32B17/10
Filed: 1920-11-06
Abstract: 175,044. Cox, J. Nov. 6, 1920. Compound sheets.-In making compound glass sheets, the surfaces are treated with a solution composed of gum mastic, amyl acetate, pyroxylin or collodion, and ricinol oil, dissolved in absolute alcohol, and superposed sheets are subjected to pressure at a temperature which allows superfluous liquid to escape. When cool, the edges are treated with linseed oil, and the sheets are again heated and pressed; and the edges of the finished sheets are finally sealed with a solution of shellac in methylated spirit.
Patent GB-858264-A (GB)
Title: Improvements in and relating to hand brakes for trailers
IPC: B60T7/08
Filed: 1959-09-15
Abstract: 858,264. Vehicle brakes. LUTZ, H. Sept. 15, 1959, No. 31445/59. Class 79(5). [Also in Group XXXIV] A hand brake operating device for trailers is adapted to be fitted as an extension to the hand brake lever 5 on the tow bar of the trailer 2 and comprises a handle 7, pivotally mounted at 8 on a U-shaped stirrup 9 which is secured to the head 10 of the normal handle brake lever 5, and adapted to swing about its longitudinal axis to rotate a cam or like mechanism 14 to engage the ratchet release button on the brake lever and release the ratchet on rotation of the handle about its longitudinal axis. When the ratchet is released, the handle 7 may be pulled forwardly by the driver of the tractor 1 by grasping the grip 16 of the handle 7 which is shaped so as to enable the handle to be applied by the driver by "blindly" feeling behind him.
Patent GB-656847-A (GB)
Title: Sectional warping frame
IPC: D02H3/00
Filed: 1947-11-27
Abstract: 656,847. Warping yarns. ATELIERS ROANNAIS DE CONSTRUCTION TEXTILES. Nov. 27, 1947, No. 31480. Convention date, Nov. 29, 1946. [Class 142(iv)] [Also in Group XIX] A warp frame comprises a head piece 1, containing mechanism for the rotation and longitudinal travel of the drum 2, coupled to a carriage 3 carrying the drum and brake mechanism, both parts being fitted with wheels and being mounted on rails in front of a stationary reed carrier 6. A motor 8 rotates the drum 2 by means of belts 100, a shaft 16, a pinion 18, clutch plates 19, 19<1>, the latter being operated by an electromagnet, and by means of a toothed wheel which meshes with the pinion 18 and is mounted on a shaft carrying an Oldham coupling 13. Movement of the drum in relation to the reed is effected by a pinion 9, driven by gearing from the shaft carrying the coupling 13, and meshing with a rack 14 fixed to the ground. This movement is indicated by a meter 11. The number of revolutions of the drum are measured by a meter 10 which controls electrically the stopping of the drum when a predetermined amount of yarn has been wound on to the drum. Movement of a hand lever 12 rotates a pinion 61 and a rack 62 is moved to cause engagement of a cone clutch 42 with either of two gear wheels 43, 43<1> so that the carriages and head piece are moved forwards or backwards relative to the reed carrier. During winding, a rack 46 on the carriage 3 meshes with a pinion 47 on the reed carrier to move a carriage, carrying the reeds 51, 51<1> and a thread guide roller 52, away from the drum so that the roll 52 will recede in proportion to the accumulation of threads on the drum.
Patent GB-520790-A (GB)
Title: Improvements in or relating to control of radio transmitters
IPC: H03F1/54
Filed: 1938-11-01
Abstract: 520,790. Wireless transmitting apparatus. GENERAL ELECTRIC CO., Ltd., and CHUBB, A. A. Nov. 1, 1938, No. 31525. [Class 40 (v)] A transmitter of telephony and telegraphy at 18 is controlled from a microphone at 17 by direct current in the wires 1, 2 of the speaking loop. Closure of FL1 causes current in wire 2 and earth return to energize relay A which completes cathode heating circuit of transmitter. A time delay circuit at the transmitter comprising condenser 5, glow tube 8 and relay G closes G5 to increase current in wire 2 and so cause relay E to light indicator 12, and closes G4 to prepare the anode supply. Thereupon HT1 is closed to energise relay B which closes B 1 and completes the anode supply to the transmitter whereupon the microphone can be used. For telegraphy the contacts CO1, CO2 are reversed so that relay D is operated to change over the transmitter. Thereafter opening and closing of TL upsets the balance of current in the windings of relay C which keys the transmitter. Supervision of the state of the various relays is given by lamps 10 ... 16, and monitoring of the output of the transmitter is afforded by a return speech loop constituted either by a phantom on the loop 1, 2 with an earth return, or as a real two'wire loop, in which case this real loop can also be used for other speech currents from the transmitter end to the contro l end.
Patent GB-327422-A (GB)
Title: Improvements in or relating to closures for vacuum-sealed containers
IPC: B65D51/16
Filed: 1928-11-01
Abstract: 327,422. Bennett, G. H. Nov. 1, 1928. Drawings to Specification. Vacuum closures.-Vacuum-sealed jars, cans, boxes, &c., in which a jointing ring is compressed between the cover and the container to make an airtight joint, are provided with a small perforation in the cover which is hermetically closed prior to the vacuumizing operation by an elastic sealing material such as rubber or a rubber compound applied in a plastic state, the material being easily punctured by a pin &c. to break the vacuum and after puncturing contracting to close the puncture. The material may be disposed in a recess in either the inside or outside' of the cover.
Patent GB-1524417-A (GB)
Title: Cementation of cooper
IPC: C22B3/00
Filed: 1976-07-30
Abstract: 1524417 Cementing copper from aqueous solution INCO Ltd 30 July 1976 [5 Aug 1975] 31764/76 Heading C1A [Also in Division C7]  Copper is cemented out of an aqueous solution by means of nickel matte by leaching 15-60% of the nickel from the matte by reaction of a slurry of the matte in an aqueous solution containing copper ions.with gaseous chlorine or oxygen and contacting the resultant partially leached matte with the solution from which copper is to be cemented.
Patent GB-1392740-A (GB)
Title: Controllable heat pipe
IPC: F28D15/06
Filed: 1972-07-07
Abstract: 1392740 Heat exchangers BETEILIGUNGS AG FUR HAUSTECHNIK 7 July 1972 [26 July 1971] 31895/72 Heading F4U The interior of a heat pipe or Perkins tube communicates by a line 4 with the interior of an auxiliary hollow body 10 which is in thermal contact with a heat sink 6. The sink can withdraw heat from the body at a controlled rate so as to control the rate of heat transfer of the pipe or tube. The heat sink may be a Peltier element having a change-over switch 7 to supply reversible direct current and control is exercised by alternately heating and cooling the body 10, heating being effected by air, an electric resistance heating element (not shown), or changing the polarity of the switch 7. The body 10 (Fig. 2, not shown), includes a plurality of containers for containing any condensed fluid medium and a Peltier and a heating element is arranged below either end of the body so as to condense or evaporate variable quantities of the medium.
Patent GB-1456284-A (GB)
Title: Production of pipe elbows for withstanding high pressure
IPC: B21D9/15
Filed: 1974-07-18
Abstract: 1456284 Making pipe elbows KRALOVOPOLSKA STROJIRNA NARODNI PODNIK 18 July 1974 [23 July 1973] 31925/74 Headings B3A and B3E A method of making pipe elbows comprises heating and bending a heated seamless pipe section (6), Fig. 1 (not shown), to obtain a semifinished product 4 having an oval cross-section with its longer axis parallel to the bending axis, filling the semi-finished product with sand and closing its ends with caps 7, heating and bending it to the required radius for the finished elbow while maintaining its cross-section oval, removing the caps and sand, heating the elbow and forming the cross-section to circular shape. The heated pipe sections (6) are placed on a rod (1) of circular cross-section and pushed along the rod to a curved mandrel section (3) of oval cross-section, which forms the semi-finished product 4. The major axis of the oval is about 3%-4% longer than the minor axis. The filled and sealed semi-finished product is placed in a die 8, which has rounded working surfaces 12, and it is forced through the die by a ram 10. Shaped working surfaces 14 on the ram 10 co-operate with the surfaces 12 to maintain the elbow cross-section oval. The heated elbow is brought to a circular cross-section in an hydralic press having a finishing cavity of the final form of the elbow.
Patent GB-1270333-A (GB)
Title: Rotational moulding process
Inventor: SPRAUL JOSEPH ROBERT
IPC: B29C41/04
Filed: 1969-06-24
Abstract: 1,270,333. Rotational moulding. TRW Inc. 24 June, 1969, No. 31939/69. Heading B5A. Thermoset resin articles are rotationally moulded from one of the compositions disclosed in Specifications 1,193,301, 1,193,734, 1,195,565, 1,195,566 and 1,194,723 (see Division C3), e.g. a 1,2-polybutadiene diol with more than 50 wt. per cent 1,2 units, a polyfunctional isocyanate capable of reacting therewith and a peroxide free radical initiator. The moulded article may be removed from the mould before heating to cure or may be cured in situ by additional heating of the mould.
Patent GB-1480059-A (GB)
Title: Cylinder and piston valve
IPC: F15B13/044
Filed: 1974-07-19
Abstract: 1480059 Valves SANDERS ASSOCIATES Ltd 19 July 1974 [27 July 1973] 32074/74 Heading F2V [Also in Division G3] A valve, e.g. controlling a relay valve in a servosystem, comprises a housing 11 slidably containing opposed landed spools 22, 27 having respective collars 33, 35 engaging fingers 41, 42 on an arm 38 actuated by an electric torque motor 37. The collars 33, 35 are urged apart by spring 43. An input signal to torque motor 37 causes arm 38 to displace spools 22, 27 to control flow from inlet 52 or 54 to outlet 51 or 53. Spools 22, 27 are slidable within sleeves 13, 14 which are threaded at 15, 17 to enable axial adjustment of sleeve ports 45, 47 relative to control lands 24, 29. The opposite ends of the spools may be subject to a feedback pressure or, via passages 61, 62, to drain pressure at port 55.
Patent GB-625138-A (GB)
Title: Improvements in or relating to cathode-ray oscillographs
IPC: G01R13/22
Filed: 1946-10-29
Abstract: 625,138. Cathode-ray oscillographs. PHILIPS LAMPS, Ltd. Oct. 29, 1946, No. 32090. Convention date, April 27, 1943. [Class 37] The X-plates 2 of a cathode-ray tube oscillograph are supplied with a potential em E h  sin w h t and the y-plates 3 with a potential em E h  cos w h t, where em is the signal to be delineated, and E h  is an auxiliary oscillation, so that em is delineated in polar co-ordinates, from a point origin, by mixing em from source 5 and E h  from source 10 in two pairs of push-pull mixing valves 6, 7 and 8, 9, whose anodes are connected in parallel.