baber/WOPTO huggingface dataset:
Patent GB-1491100-A (GB)
Title: Methods of manufacturing and transporting structures of concrete
IPC: B65G7/06
Filed: 1975-12-19
Abstract: 1491100 Transporting concrete structures using fluid cushions; slipways MACKLEY-ACE Ltd 19 Dec 1975 [25 Feb 1975] 7738/75 Headings B7K and B7S A concrete structure, such as the hull 5 of a barge, is constructed on a launching slip with the use of shuttering (not shown), and is subsequently launched by forming a fluid cushion between the hull and the slip. A flexible skirt 4 having spaced reinforcing webs 6 is temporarily attached to the structure. Air or water is fed to the cushion space from an external pump (15), Fig. 1 (not shown), the fluid conduit 16 passing through a skirt-clamping device 9, or alternatively, through a passage (31), Fig. 4 (not shown), in the concrete structure, or directly through the wall of the skirt (Fig. 5, not shown) To enable the cushion to be primed wooden strips 19 are disposed beneath the structure, or alternatively, grooves or recesses (not shown) may be formed in the bottom of the structure. Cushion fluid may also be supplied through valve-controlled ducts 40a in the slip. An impermeable sheet 20 of for example polythene may be laid on the slip to prevent erosion.
Patent GB-912554-A (GB)
Title: Glass-to-metal seal
Inventor: MAIDEN CLINTON ELWOOD
IPC: H01J5/26
Filed: 1960-03-04
Abstract: 912,554. Glass-to-metal seals. PACIFIC SEMICONDUCTORS Inc. March 4, 1960, No. 7848/60. Class 36. In the manufacture of diode bodies consisting of a pair of metal tubes 12 spaced by a sealed-on glass sleeve 13, manufacturing tolerances between the glass and metal, which interfere with the normal R.F. heating process, are accommodated by a presealing step consisting of quickly heating to a temperature slightly above the softening-point of the glass, quickly cooling below this temperature, and slowly cooling through the annealing range of the glass. During this process the glass shrinks on to the metal tubes and produces an imperfect " black " seal, the metal tubes being covered with a black oxide. Subsequent R.F. heating produces a " grey " hermetic seal. The tubes 12 may be of " Kovar " (Registered Trade Mark) and the sleeve 13 of a hard boro-silicate glass, e.g. 80 % silicon, 14% boric oxide, 4% soda, and 2% alumina. For the pre-sealing treatment, the bodies are threaded on to a series of nickel-chromium alloy wires 11 supported on brackets 25, 26 in a nickel boat 18. The boat is placed for 80- 90 seconds in a preheated oven and then quickly moved to a box of insulating material, e.g. asbestos, in which it quickly cools below the softening-point of the glass. Thereafter, it cools through the annealing range over about 15 minutes. For the final sealing process, each body is placed on a mandrel 44 by means of tongs 40. This mandrel is spring-biased upwards and is depressed to carry the body into the R.F. coil 45 by a complementary mandrel 43.
Patent GB-1358144-A (GB)
Title: Bit and block assembly
IPC: E21C35/183
Filed: 1972-02-21
Abstract: 1358144 Mineral-mining picks G W ELDERS 21 Feb 1972 7865/72 Heading E1F In a mineral-mining cutter pick and box assembly the pick shank-receiving bore 11 in the box 10 or the pick shank 16 depart from strict cylindricality in order to provide a passage 40 therebetween for the passage of fine cuttings rearwards through the bore whilst not impeding rotation of the shank in the bore during use of the assembly, the cuttings falling from the bore into a space defined by a body portion 30 that mounts and protects locking means 35 precluding unintentional withdrawal of the pick from the box. Two preferred embodiments are described. In the embodiment not shown turning of the pick in the box is aided by spaced protuberances on the head of the pick, the departure from strict cylindricality of the shank is due to spaced protuberances on the shank and cuttings-receiving space is created by an enlargement of the rear portion of the shank-receiving bore.
Patent GB-490863-A (GB)
Title: Improvements in or relating to fluid-tight joints
IPC: H02G15/24
Filed: 1937-03-17
Abstract: 490,863. Cable joints. BEAVER, C. J., DAVEY, E. L., and GLOVER & CO., Ltd., W. T. March 17, 1937, No. 7884. [Class 38 (i)] [Also in Group XXVI] A joint packing 14 between a vessel 1 containing fluid under pressure and a closure member 7 therefor is protected by sealing material supplied by gravity to a channel 16 surrounding the joint from a reservoir 21 in the upper member. The sealing material, e.g. a viscous oil or compound or a metal or alloy having a low melting point is initially introduced into the reservoir 21 and flows after the joint 14 is made into the channel 16, heat being applied to the member 7 if necessary to liquefy the material. The invention may be applied to a joint sleeve 1 for high tension cables. The sleeve is filled to level 8 with oil or compound placed under pressure by gas supplied to a number of domes 7 from the interior of one of the cables.
Patent GB-118822-A (GB)
Title: Improvements in or relating to Trolley Heads for Electric Traction.
Inventor: PARKER JAMES BOOTHROYD
IPC: B60L5/06
Filed: 1918-05-10
Abstract: 118,822. Parker, J. B., and Smith, J. May 10, 1918. Channels and reservoirs in trolly wheels. - A hollow trolly wheel C for electric traction forms a reservoir for lubricant and is mounted on a hollow spindle B' from which one or more passages C' convey lubricant to the swivelling spindle B<6> of the carrier B.
Patent GB-787633-A (GB)
Title: Improvements in or relating to radar systems
Inventor: RATCLIFFE STANLEY
IPC: G01S7/282
Filed: 1954-03-18
Abstract: 787,633. Radar. MINISTER OF SUPPLY. Feb. 24, 1955 [March 18, 1954], No. 7982/54. Drawings to Specification. Class 40 (7). To reduce the effect of fading, in a pulse radar system, due to changes in target contour, two different operation frequencies are used alternately or the operation frequency is varied smoothly between two values. In one embodiment, the operation frequency is switched periodically, at ten cycles per second, from one of two frequencies to the other, when the amplitude of the echo signals falls below a given value. The switching ceases when the echo signals increase. Frequency switching is effected by a movable probe in a waveguide associated with a magnetron. The probe is moved by an electromagnet controlled by a multivibrator which operates when the echo signal level falls below the given value. Alternatively, the probe is moved in accordance with the echo signal amplitude to effect a smooth change of operation frequency.
Patent GB-595639-A (GB)
Title: Improvements in or relating to rotary apparatus such as pumps
IPC: F04C2/344
Filed: 1945-03-29
Abstract: 595,639. Rotary pumps. STEVENS, A. H. (Henry & Wright Manufacturing Co.). March 29, 1945, No. 7990. [Class 110 (ii)] The stator wall of a rotary apparatus, such as a pump, of the outwardly sliding vane type, is of cardioid form except for the portion adjacent the retrogression point, which is cut away between the points on the cardioid having a common tangent to provide a longitudinal arcuate recess. The latter is engaged by the rotor, which is of cylindrical form with its axis coincident with the retrogression point. The diametrical vane 12 is slidably received within a slot 11 in the rotor 8 and comprises a tenon 15 which is journalled in a bearing 17 carried by a driving plate 18. A counterweight 18' is provided. A scraper 22, which may be of ebonite, is carried in a groove 21 at each end of the vane 12, its movement being limited by pins 23 engaging slots 24. The transverse edges of the vane 12 may be packed by strips of greased felt engaged in grooves therein or by grooves of suitable sections and positions. The pump may be rendered non-operative without stopping it by means of rotary distributer valves 27, 28 which can be turned by a lever 30 and connecting rod 29 to positions in which the suction and discharge connections 2<1>, 3<1> are placed in communication with each other through a byepass 26<1>, the suction and discharge ports 2, 3 being at the same time placed in communication through orifices 31, 32 and a cavity 26 with the open air. A relief valve 34 communicates with the discharge connection 3<1>. The stub shaft 25 of the rotor 8 has helical grooves 25<1> on its surface which delivery lubricant through conduits (not shown) to places to be lubricated. The lubricant is fed from a reservoir 36 by a wick 35. The vane 12 may be guided at the end remote from the tenon 15 by a further tenon engaging an annular slot in the wall of the cover-plate 6. The rotor 8 may be positively driven by gearing between the drive shaft 19 and the shaft 25. The machine may be used for colloidal liquids where foaming must be avoided. Whenused for such liquids or for crude oil or for gases carrying dusts or powdered mineral matter, the scrapers may be omitted and a slight clearance provided between the moving parts. The Specification includes a discussion on the optimum proportions for the moving parts.
Patent GB-403701-A (GB)
Title: Improvements in and relating to accumulator electrodes
IPC: H01M4/14
Filed: 1932-03-17
Abstract: 403,701. Accumulators. BLEIINDUSTRIE - AKT. - GES. VORM. JUNG & LINDIG, Freiberg, Saxony, and SCHNEIDER, E. M., 5, Goethestrasse, Radebeul, near Dresden, both in Germany. March 17,1932, No. 7993. [Class 53.] An accumulator electrode consists of a lead plate provided on both sides with grooves c, a small quantity of paste being placed at the bottom of each groove.
Patent GB-442980-A (GB)
Title: Process for the production of ammonium nitrate having a low weight per unit volume
IPC: C01C1/18
Filed: 1935-03-15
Abstract: Ammonium nitrate of low density is obtained by heating a concentrated aqueous solution thereof to a temperature slightly below its boiling point at atmospheric pressure and spraying it in association with air through nozzles in the form of discrete particles into a chamber maintained under vacuum or reduced pressure.  The dry or nearly dry crystals collect at the bottom of the vessel.  85--95 per cent solutions may be sprayed at temperatures of 80--120 DEG  C.  The Specification as open to inspection under Sect. 91 comprises also the spraying of the ammonium nitrate solutions without the simultaneous injection of air.  This subject-matter does not appear in the Specification as accepted.
Patent GB-1140156-A (GB)
Title: Apparatus for cutting channel through soil
Inventor: FERGUSSON IAN DOUGLAS
IPC: A01B15/02
Filed: 1967-02-21
Abstract: 1,140,156. Plough shares. DIRECT NITROGEN Ltd. 19 Feb., 1968 [21 Feb., 1967], No. 8203/67. Heading A1B. A plough share comprises a blade 1 with leading cutting edge 2 and holes 3, 4, 5, 6 in one of which is held a detachable U- or C-shaped mole 7. A pipe 10 may be provided at the rear of the blade for injection of fluids into the soil. The share is designed so that when wear has occurred, for example down to line 12, the bottom of the blade may be sawn off and the mole moved to a higher hole, to prolong the life of the share.
Patent GB-1108813-A (GB)
Title: Improved method for welding and metal powder therefor
IPC: B23K35/30
Filed: 1965-02-26
Abstract: A metal powder mixture for welding joints (e.g. by flame spraying) consists of nickel powder having a particle size of less than 150 mesh (U.S.) in an amount of 10-50% the balance being a nickel base alloy powder.  Suitable alloy powders disclosed are:-  .Ni.. .Cr.5-15%.- .Si.2-6%.1-6% .B.1-4%.1-4% .Fe.0.1-8%.0.2-5% .C.0.1-1.5%.0.01-0.3%
Patent GB-1379245-A (GB)
Title: Spring devices
IPC: F16L3/205
Filed: 1971-03-31
Abstract: 1379245 Spring units PIPE SUPPORTS Ltd 20 March 1972 [31 March 1971] 8349/71 Heading F2S A spring device, particularly for supporting a pipeline, has spring means such as a helical spring 19, acting between the bases 13 of two relatively movable (similar) members 10, 11, each of which has a pair of arms 15a forming a U with its base 13 which is located between the arms of the other member. Each pair of arms 15a is accommodated in recesses 14 in the base 13 of the other member and the ends 17 of the arms receive a bolt 22 or 24 which passes through a suspension eye or that of a load-supporting turnbuckle 26. A welded strut 20 or a bolted tubular spacer bridges the arms of each pair and, between that of the member 11 and the base 13 of the member 10, a removable stop 21 determines the precompression of the spring 19. The pair of arms 15a may be provided by a strip welded to a base 13. To lock the members 10, 11 against relative movement, a pair of diametrically-opposed U-clips 31 are turned through a right angle so as to straddle the adjacent arm 15a of the member 10 and receive the edge of base 13 of the member 11 in notches. A scale 27 on the member 11 co-operates with an arrow 28 on the member 10.
Patent GB-1400126-A (GB)
Title: Method and apparatus for making permeable drains
IPC: E21B43/04
Filed: 1973-02-21
Abstract: 1400126 Wells &c FOUNDATIONS PATENT & INVESTMENT CO NV 21 Feb 1973 8481/73 Heading E1F A method of installing a pervious drain in an impervious stratum comprises directing a jet 84 of water vertically downwardly into the stratum to form a hole therein, the hole being formed in the absence of a casing for supporting the wall of the hole so formed, and slowly filling the hole with a pervious material e.g. coarse sand. The jetting apparatus 72 also comprises nozzles 86, 90 for producing water jets 92 which serve to erode the wall of the hole and to flush loosened particles out from the hole. A fixed annular cutter 88 is provided at the head of the jetting apparatus. The jetting apparatus is reciprocated when forming the hole and is then maintained stationary for a given period to flush the hole. The sand is either shovelled or fed from a hopper (not shown) into the hole at a rate of three to twelve cubic feet per minute.
Patent GB-1139863-A (GB)
Title: Improvements in pyrolytic graphite electrical resistance element
IPC: H05B3/14
Filed: 1967-02-22
Abstract: 1,139,863. Resistance heating element. GENERAL ELECTRIC CO. 22 Feb., 1967 [10 May, 1966], No. 8493/67. Heading H5H. [Also in Division H1] A carbon resistance heating element 10 made from pyrolytic graphite to which electrical connections 16, 17 are made, is characterized in that the "C" crystallographic axis extends in the direction of current flow through said graphite element. To prevent the element " delaminating ", it is compressed in the direction of the "C" axis. The tantalum leads 16, 17 may be resiliently pressed towards each other to provide the compressive force or a weight may be placed on the upper end of element 10. In Fig. 2 (not shown), the electrical connections are made to enlarged ends of the element and separate biasing means is provided to compress the element. The cross-section of the element may be varied to provide local temperature variations. The element shown is hollow and acts as a furnace.
Patent GB-488591-A (GB)
Title: Improvements in or connected with heat exchangers for fluids applicable to the conditioning of air
IPC: F28F1/42
Filed: 1937-03-23
Abstract: 488,591. Moulding heat-exchangers; heating air and gases. BELL, G. G. March 23, 1937, No. 8501. [Class 87 (ii)] [Also in Group XIII] Heat-exchangers, for use with fluids, such as air, comprising a series of ducts having heat conductors in wire, rod, or bar form embedded in the walls and entering the ducts, are produced by supporting the wires &c. in spaced relationship in a mould corresponding to the solid part of the exchanger, pouring in melted paraffin wax or similar material to support the wires and form the cores for the ducts, placing the embedded wires in another mould, pouring in cementitious material to surround the wax, and, after setting, melting out the wax. The ducts may be arranged so that the streams of hot and cold gases pass through alternate ducts in parallel planes in the same or opposite directions or in directions at right - angles. As shown in Fig. 1, vertical ducts B and horizontal ducts C are traversed by wires A. The exchanger is formed in a mould comprising a base 14, end walls 15, and a number of staggered side walls 1-13 and 1a-13a. A number of filling bars 18 are placed between opposite even numbered side walls and spacing strips 17 are inserted in the gaps between adjacent side walls. On each strip 17 is placed a strip 16 having grooves in its upper face which support the wires A and finally a second strip 16 is inserted above the wires. Wax D, Fig. 9, is poured in level with the top of the strips 16 and, when set, the strips 17 and 16 are pulled out and replaced above the wire A. Further wax is then poured in and the process repeated until all the wires are embedded in the wax. A second set of bars 18 is used in forming the top. If desired a number of strips 17, 16 can be used to support all the wires A in place so that the wax may be poured in a single operation. The wax with the bars embedded therein is placed in a second mould 19, Fig. 15, and liquid cement is poured in to fill the spaces E. When the cement has set the block is heated in a steam bath to melt out the wax D leaving the wires A embedded in the cement. The wires may be coated first with wax if they are to fit loosely in the cement. In a modification, Fig. 19, the exchanger may be built up of a number of channel-shaped sections F formed separately with short wires A<2>, the sections being arranged so that the ducts are either parallel or at right-angles. The exchanger may be used in the flue of a gas fire.
Patent GB-492716-A (GB)
Title: Improvements in or relating to hydraulic jacks
IPC: B66F3/42
Filed: 1937-03-23
Abstract: 492,716. Fluid-pressure jacks. UTZ, H. March 23, 1937, No. 8568. [Class 78 (iii)] In a hydraulic jack of the kind comprising a combined jack cylinder and pump unit, the pump piston or a member connected thereto operates a check-valve when in its most advanced position to release fluid from the jack cylinder and allow it to pass to the reservoir through a passage formed in the piston or piston rod, the passage having one end terminating just behind the pressure surface of the piston and its other end connecting with the reservoir when the piston is in its most advanced position. In the embodiment shown in Fig. 1, the jack member 4 is actuated by means of a pump comprising a piston 5 and cylinder 2 mounted in a reservoir 1, the piston being operated by a lever 9. When it is desired to lower the jack, the piston 5 is depressed to its lowest position whereby a projection 13 opens a check-valve 11 to permit liquid to return through a chamber 14 communicating with a recess 12 which comprises a flat formed on the piston and is connected with the interior of the reservoir. A passage 16 in the piston connects the reservoir with the atmosphere when the piston is depressed to its lowest position. To prevent accidental release of the liquid during the lifting operation, the handle 15 which may be attached by either of its ends to the lever 9, is provided at one end with a collar which engages the top of the reservoir to prevent the piston being fully depressed until the handle is reversed. Instead of the recess 12, a channel may be bored in the piston. Alternatively, the channel may be provided by having the piston mounted on a rod of smaller diameter. The load-engaging means on the jack comprises a bracket, Fig. 4, clamped round the body of the jack and comprising a channel part 20 which engages beneath a downwardly projecting edge on, for example, the chassis of a vehicle to be lifted.
Patent GB-883575-A (GB)
Title: Improvements in devices for the continuous copying of original documents
IPC: G03G15/30
Filed: 1958-03-18
Abstract: 883,575. Printing processes. SIEMAG FEIMECHANISCHE WERKE G.m.b.H. March 18, 1958 [March 22, 1957], No. 8605/58. Class 100(2) [Also in Group XX] In a xerographic printing apparatus, a photoconductive layer in sheet form 3 is fed with the original to be copied to a rotatable drum 1 having a surface of transparent conducting material to which the sheet 3 adheres solely under the action of electrostatic forces. The original is fed through guides 5 and emerges along guides 7. The photoconductive sheets 3 from a stack 4 are given a uniform charge at 19 and are pressed with the original against the drum by a belt 6. After reflex exposure by lamp 17, the sheet 3 continues on the drum surface to a developing station 9 and a transfer drum 11, where the developed image is transferred to a sheet from a stack 12. The sheet 12 continues round drum 11 and the transferred image is fixed at 13, while the sheet 3 is removed from the drum 1 along guides 15. The surface of the drum 1 may be of conducting glass or it may be of glass covered by a conducting layer of transparent metal or varnish. Specification 755,486 is referred to.
Patent GB-1236837-A (GB)
Title: Protective relay power supply
Inventor: PADDISON E
IPC: H02H1/06
Filed: 1969-02-18
Abstract: 1,236,837. Protective arrangements. ENGLISH ELECTRIC CO. Ltd. 18 Feb., 1970 [18 Feb., 1969], No. 8642/69. Heading H2K. A power supply arrangement for circuits 7, 8, e.g. of a distance relay, comprises means 1, 2 deriving a supply from a protected transmission system for energizing the circuit 7, 8 under normal conditions, and a voltage regulator 26 . . . 29 which is cut off under normal conditions, but turns on to maintain the circuits 7, 8 energized from a battery 13 if the supply from the transmission line becomes insufficient. A circuit 9, 10 normally maintains transistors 5, 6 conductive so long as the transmission line is " live," the provision of a voltage transformer and Zener diodes 11 in this circuit 9, 10 ensuring that the transistors remain conductive during the dead time in a single phase auto-reclose sequence. The voltage regulator comprises series-connected transistors 27, 26 controlled by a transistor 29 having its base connected to the junction between a Zener diode 32 and a resistor 30. A safety circuit 12 provides an output at 19 to enable a relay circuit (not shown) to function immediately to cause circuit-breaking should a near-by fault exist when the protected transmission line is initially energized. This output is provided through a transistor 14 which conducts only for the period in which a capacitor 15 charges up, though a "holding" circuit to maintain the transistor 14 energized is completed through a terminal 20 when the relay circuit operates.
Patent GB-364945-A (GB)
Title: Improvements in or relating to the admission and exhaust passages and valves of internal combustion engines
IPC: F02B1/00
Filed: 1931-03-20
Abstract: 364,945. Cylinder passages and valves. EBERMAN, L., 20, Ul Nabielaka, Lwow, Poland. March 20, 1931, No. 8692. Convention date, March 24. [Classes 7 (ii) and 7 (vi).] For assisting scavenging and charging of engines used on vehicles, ships, or aircraft and having a single valve c controlling inlet and exhaust, the admission passage e is formed with its end opening in the direction of movement of the vehicle &c., the exhaust passage f opening in the opposite direction, as shown in Fig. 1. The valve may be formed with a baffle g, Fig. 2, which causes the air entering at e to pass through the upper part of the cylinder, as indicated by the arrows in Fig. 1. The valve may be formed with a flange h, Fig. 3, at the exhaust side, so as to retain as much air as possible within the cylinder. Both the baffle g and flange h may be provided on the valve together. In cylinders having two valves, each serving both for inlet and exhaust, the passage e leads to one valve, and the passage f from the other; or the passage f may be replaced by the arrangement of passages l, m shown in Fig. 7. The partition g is unnecessary on the valve i, and the valve j is closed before the other valve or is provided with the flange h all round its periphery. The entering air may be given a whirling motion by surfaces o, Fig. 8, on the partition g, or where two valves are used, by flanges extending partly around the valves.