baber/WOPTO huggingface dataset:
Patent GB-1506875-A (GB)
Title: Vessel for containing molten metal
IPC: C21C1/06
Filed: 1975-05-23
Abstract: 1506875 Vessel for molten metal DEMAG AG 23 May 1975 [31 May 1974] 22775/75 Heading F4B A refractory-lined vessel for molten metal comprises a casing 1 having a cylindrical end opening and a cover 2 for the opening having an overlapping cylindrical rim portion 2a with a fixed circumferential sealing strip 3 which bears against a seal 4 on the end face of the casing. The cover is detachably secured by circumferential devices comprising a pair of spaced lugs 5 mounted upon a bracket 5a secured to the casing, and a single lug 6 on the rim 2a which fits between the lugs 5. A key 9 is driven through the holes 9a in each group of three lugs so that the sealing strip 3 is pressed firmly against the seal 4. In a modified embodiment two pairs of spaced aligned lugs (7) and (8), Fig. 4 (not shown), are mounted on the casing wall, and the rim 2a which do not interfit but are disposed opposite to one another and are held together by a connecting member (11) attached to the casing lugs by a bolt (10) and to the cover lugs by the key 9.
Patent GB-1188999-A (GB)
Title: Method and Apparatus for Low Pressure Purifying of Liquids
Inventor: RICHARDSON HARRY LEE
IPC: C22B9/04
Filed: 1967-05-16
Abstract: 1,188,999. Vacuum degassing. CHEMICAL CONSTRUCTION CORP. 16 May, 1967 [24 May, 1966], No. 22795/67. Heading B1M. [Also in Division C7] In a method and apparatus for continuously removing volatile impurities from a liquid the latter flows through a plurality of connected chamibers which are separated from each other by liquid seals and which have successively lower pressures, the liquid flowing horizontally as a layer through each chamber after the first; the horizontal flow may be either over the floors of chambers juxtaposed in a substantially horizontal plane but each chamber having a floor slightly elevated above the floor of the previous one, or in the case of metals the flow may be through a series of vertically aligned chambers in each of which is a horizontal surface over which the metal flows. As shown in Fig. 1, molten metal entering at 1 overflows lip 3 and falls into the first of three vacuum chambers, where it flows as a thin layer across the surface of baffle 11 before falling into the pool which forms a liquid seal between the first and second low pressure zones. Metal overflows continuously at 14 onto the upper surface of baffle 18 from where it passes as before to a final zone at still lower pressure before overflowing at 29 to a collection zone from which it is tapped at 32. In a simplified form, (Fig. 2, not shown) provision is made for the addition of alloying or refining agents to the liquid as it enters the apparatus. As claimed, these forms of apparatus are used only for the treatment of metals. In a different form of apparatus, illustrated in Fig. 3 the liquid flows horizontally across the floors of the chambers, each floor being slightly raised above the level of the preceding one and the chambers being formed by vertical baffles depending into the liquid.
Patent GB-533637-A (GB)
Title: Improvements in relation to electrically heated vapourising device for disinfecting and sterilizing purposes
Filed: 1939-08-09
Abstract: 533,637. Vaporizers. ASLEN, D. E. Aug. 9, 1939, No. 22951. [Class 81 (i)] [Also in Group XI] A vaporizing device for sterilizing &c. comprises a tube 4 filled with glass wool or other capillary substance, dipping into a body of liquid in a vessel 3 on which the tube is secured in a mounting 11, 13 and an electric heating coil 8 surrounding the upper part of the tube. A head 14 having an opening covered by gauze &c. 17 is provided for outlet of the generated vapour. In a modification the tube 4 is closed at its lower end which itself forms the liquid container.
Patent GB-384959-A (GB)
Title: Improved method of and apparatus for making linoleum
IPC: D06N7/00
Filed: 1932-08-16
Abstract: 384,959. Inlaid linoleum. ARMSTRONG CORK CO., Lancaster, Pennsylvania, U.S.A.-(Assignees of Perry, A. C. ; 935, Virginia Avenue, Lancaster, Pennsylvania, U.S.A.) Aug. 16, 1932, No. 22977. Convention date, June 23. [Class 140.] In a method of making inlaid linoleum in which tesserµ out from linoleum material are applied to a backing, the tesserµ are cut from a web which is a half, third or other definite fraction of the thickness of the completed product, and are applied to the backing only after a number equal to the full thickness have been accumulated in superposed relation. For instance, a web of fractional thickness may be fed to a rotary inlaying machine modified so as to discharge the tesserµ from the cavities in the cutting die only after a number of pieces equal to the full thickness have been accumulated. The machine may be arranged so that the material in any one cavity is discharged at intervals equal to the time required for several revolutions of the rotary die, so that patterns of more than the normal repeat length may be produced. The method results in the elimination of much or all of the waste material which is rejected by the usual type of rotary machine ; for example, in a two-colour pattern the whole of the material may be used without waste. A die roll, Fig. 3, forming part of a machine arranged to produce a two-colour tile pattern linoleum without waste, is provided with the usual knives 13 forming cavities C<1> .. C<9>, each provided with ejector mechanism 15. Within the die-roll is an ejector roll 19 provided with pins 20 and geared to the die roll so that the pins operate the ejector mechanism in every second cavity. A tessera of material of half the final thickness is deposited in each cavity from the platen roll 8 as the die-roll revolves, but only those cavities containing the full thickness are discharged by the ejector roll. The whole of the web W is thus used. A second die-roll deposits tesserµ of the other colour on the backing. A brush 9 may be provided to force the material into the cavities, and to provide the usual lubrication of the ejector plates 16, a second pin roll 24 is arranged to project the plates in the empty cavities against a cloth roll 26 supplied with oil. A design such as that shown in Fig. 6 comprising both plain and marbled colours is produced by a series of four die-rolls D<3> .. E<3>, Fig. 2, each provided with scrap ejecting rolls 23, pattern rolls of the usual type, and scrap conveyers 22. The die-rolls D<3> and E<3> supplied with plain coloured webs of full thickness are operated in the usual way, while the rolls F<3>, G<3> are fed with marbled webs of half thickness and of two different colours, and are operated so as to eject the tesserµ required for the pattern when the latter have been built up to the full thickness and also to eject the comparatively small amount of scrap.
Patent GB-1439177-A (GB)
Title: Bandsaw machines
IPC: B23D55/04
Filed: 1973-05-16
Abstract: 1439177 Work holding vice for bandsaw AMADA CO Ltd 16 May 1973 [19 May 1972] 23299/73 Heading B5L A bandsaw machine comprises a material holding vice having a fixed jaw 23 with a central vertical opening 23vo between two jaw elements 23f, 23r and a movable jaw 27 bifurcated into two elements 27f, 27r with a vertical opening 27vo therebetween. The openings 23vo, 27vo lie in the cutting plane of the blandsaw blade 3, and the jaw 27 is integral with a movable support member 29 which is adapted to support the material M to be cut. The jaw elements 23f, 23r are bolted at 25 to a frame 17 which at one end supports a hydraulic cylinder 35. The piston rod 39 of the cylinder carries an arm 45 having a pawl 45p and a roller 49 so arranged that when the piston rod 39 is advanced by fluid pressure the roller 49 runs up a plate spring 53 to bring the pawl 45p into engagement with a rack 31 on the underside of the member 29 thus urging the movable jaw 27 to the right to clamp a workpiece M. The member 29 has a groove 29g and a depressed area 29d to receive the blade 3 and its guide 13,  and has a shoot 29c down which cutting chips are guided.
Patent GB-790142-A (GB)
Title: High frequency reflex klystron tube
IPC: H01J25/24
Filed: 1955-08-12
Abstract: 790,142. Velocity-modulated tubes. VARIAN ASSOCIATES. Aug. 12, 1955 [Dec. 23, 1954], No. 23338/55. Class 39(1). [Also in Group XL(b)] A reflex klystron comprises two similar metal envelope portions 1 and 1<SP>1</SP> secured together and carrying a grid 23 mounted in a ring 24. A cylindrical anode 20 carrying a grid 22 is supported by a header 21 from the envelope portion 1. During assembly the header 21 is adjusted in position (as shown by the dotted lines) along the length of the anode 20 to adjust the size of the resonant cavity 27 to suit the frequency range desired. A cathode 10 is heated by a coil 11 enclosed in a housing 12 supported by brackets 14 from the wall of a cylindrical heat shield and focusing electrode 15 having ears 16 welded to stem wires 17 projecting from a glass base 3 sealed in a flanged member 18 which is secured to a ring member 4 brazed to the envelope portion 1. The end of the envelope 1 is crimped into recesses 9 provided in the periphery of a base 7 of plastic or other insulating material carrying terminals 8. The heating coil 11 is supplied through leads 13 connected to two of the terminals 8. A reflector 26 has a cylindrical portion 28 having ears 29 welded to support wires 17<SP>1</SP> projecting from a glass base 3<SP>1</SP> similar to the glass base 3 and supported in a similar way from the envelope portion 1<SP>1</SP>, the end of which is closed by a cover 7<SP>1</SP>, similar to the base 71 and carrying a conducting stem 30 which is connected by a lead 31 to one of the support wires 17<SP>1</SP>. An external resonator portion 54 comprising sections 34 and 35 having flanges 36 secured together is secured to a flattened portion 32 of the wall of envelope 1 provided with a long narrow iris opening 33. The wall 37 of section 34 has a window 38 larger than the iris opening 33. A mica closure 41 is sealed by glass 42 around its edges in an opening 40 in a plate 39 abutting the wall 37. An inclined screw 43 serving to concentrate the field in the vicinity of the window 38 is locked in position by spot welding after adjustment and the screw slot filled by sealing composition 44. A tuning screw 45 is threaded through a block 46 mounted on section 35 and is held in adjusted position by a nut 48 carried by a spring tension device 47 secured at each end to the block 46. Waveguide ridges 49 may be employed to cover different frequency ranges, in addition to varying the size of the output opening in the flange 50. The tube is provided with cooling fins 51 separated by spacers 52. The tendency of the cavity 27 to enlarge and increase in inductance when the tube heats up is compensated by the action of the slightly dished anode header 21 which moves the anode downwards thus increasing the spacing between the grids 22 and 23 and lessening the capacity therebetween. In an alternative construction the anode 20 is made sufficiently large to contain the cathode 10 and focusing electrode 15 together with an additional accelerating grid, thus enabling the cathode to be positioned close to the resonator gap.
Patent GB-961301-A (GB)
Title: Improvements in or relating to thermocouples
IPC: H01L35/32
Filed: 1960-07-04
Abstract: 961,301. Thermo-electric devices. SIEMENS-SCHUCKERTWERKE A.G. July 4, 1960 [July 3, 1959], No. 23339/60. Heading H1K. A thermo-couple has its two limbs formed integrally with one another and cut from a single crystal whose thermo-electric figure of merit is anisotropic, the limbs being cut to give the thermo-couple a high figure of merit, and having, in use, thermal e.m.f.s of opposite sign. This arrangement eliminates a soldered junction with its contact resistance. Fig. 1 shows a thermo-couple cut from a hexagonal Cd crystal, one limb being parallel to the main crystal axis, the other limb being perpendicular to it. In some crystals, optimum conditions are obtained with limbs disposed at acute or obtuse angles to one another. Fig. 3 shows a thermo-pile, exhibiting the Peltier effect, cut from a single crystal. The crystal is doped to produce maximum thermal e.m.f.s in the limbs. Zn and Bi crystals may be used.
Patent GB-1071657-A (GB)
Title: Photographic printing processes and solutions therefor
IPC: G03C1/30
Filed: 1964-06-05
Abstract: 1,71,657. Colloid transfer process and solutions therefor. EASTMAN KODAK CO. June 5, 1964 [June 5, 1963], No. 23342/64. Headings G2C and G2M. A photographic colloid transfer process comprises applying an aqueous alkaline solution containing 2-hydroxymethyl-2-nitro-1, 3-propanediol to control gelatine transfer, to an imagewise exposed unhardened gelatino-silver halide emulsion, there being incorporated in the emulsion layer and/or the alkaline solution a tanning silver halide developing agent with or without a non- tanning developing agent e.g. a mixture of 4- phenylcateehol with 4-methoxy-alpha-naphthol, so as to bring about tanning development of the layer, and transferring a stratum of the unexposed areas to a receiving support. The alkaline solution may contain (i) 2-diethylaminoethanol or iminodiethanol (ii) sodium bicarbonate or carbonates or phosphates (iii) sodium salicylate as gelatine softener (iv) a sequestering agent e.g. E.D.T.A. or its sodium salt, and (v) sodium p-toluene sulphonate. The solution may be in concentrate form comprising in one package (i), (ii), (iii), (iv) and water and in the other 2-hydroxy methyl- 2-nitro-1, 3-propanediol. The transferred stratum may be rendered more ink-receptive by a gelatine hardening procedure using for example a mixture of the condensate of 2-furaldehyde with resorcinol, tannic acid 1, 3-diethyl-2-thiourea, glycerol, ethyl alcohol, glacial acetic acid and water.
Patent GB-1108120-A (GB)
Title: Hydraulic control apparatus for a pipeline valve
Inventor: ANDERSON CLIFFORD ERNEST
IPC: E21B33/035
Filed: 1966-05-25
Abstract: 1,108,120. Valves. ACF INDUSTRIES Inc. 25 May, 1966, No. 23354/66. Heading F2V. [Also in Division F1] Opposite ends of a cylinder 56, Fig. 3, housing a double-acting piston 54, Fig. 2, for controlling a gate valve slide 44 in a submerged oil supply line 22 are connected by flexible hoses 154, 156, unions 80 and ducts 146, 148 to a three-position remotely controlled distribution valve 144 which in the central position shown connects ducts 146, 148 to a reservoir return duct 150 and in either end portion connects one or other of ducts 146, 148 to the delivery duct 142, of a power driven pump 120 and the other duct to return duct 150, and the pump delivery may by-pass valve 144 and flow through ducts 164, 162 to a manually operated closed centre three position distributing valve 160 and thence through one or other ducts 154, 156 according to its end position, the duct not so pressurized being connected to the return duct 150; an auxiliary manual pump 190 also drawing from the reservoir R being available for pressurizing duct 142 in the event of failure of pump 120. A second power operated pump 120<SP>1</SP> in parallel with pump 120 may be selectively actuated from a common compressed gas source 84 and a further cylinder 56<SP>1</SP> is connected through bases 154<SP>1</SP>, 156<SP>1</SP> to a manual valve 160<SP>1</SP> and a remotely controlled valve 144<SP>1</SP> to a pump delivery manifold 142. Double check valves 152, 152<SP>1</SP> prevent escape of hydraulic fluid from cylinders 56, 56<SP>1</SP> when valves 144, 144<SP>1</SP> are in their central vented positions. A visual flow indicator 170, 170<SP>1</SP> in the return duct 166 of valves 160, 160<SP>1</SP> gives an indication of the rate of opening or closing of valve slides.
Patent GB-1160859-A (GB)
Title: Internal Resistance Heating Apparatus
Inventor: RIZZOLO ALFRED THOMAS
IPC: H05B3/00
Filed: 1968-05-16
Abstract: 1,160,859. Control systems for electric heating apparatus. CHESTON CO. 16 May, 1968, No. 23386/68. Heading H2H. [Also in Division H5] A control circuit for an internal resistance heating apparatus has a main supply 98, 99 which supplies the primary 91 of a transformer through a saturable reactor 90, the secondary of the transformer being formed by a workpiece not shown, clamped between a pair of fixed electrodes 50, 51 and a pair of movable electrodes 52, 53. When a selector switch 102 is moved to the auto-position shown, a timer 109 is closed, completing an energizing circuit for relay coil 120 from supply terminal 104 through lines 118, 119, 121, stop switch 122, line 123, the normally closed contacts 124 of a timer 125, line 126, to supply terminal 95. Relay coil 120 closes contacts 114, 116 completing a holding circuit. Workpieces are carried on a movable platform which is moved by a solenoid valve 139 to position a workpiece on the fixed electrodes 50, 51. At the end of its positioning movement, limit switch 133 is changed over from the position shown to complete a circuit through the now closed contacts 141, 142 of relay 120 of a relay 144, and to de-energize solenoid valve 139 so that the movable platform returns to collect another workpiece. Relay 144 closes contacts 146, 147 completing the energizing circuit of a relay 148. Closure of the contacts 155, 156 of relay 120 energizes a relay 158 whereupon its contacts 160, 161 close completing an energizing circuit for solenoid valve 162 which moves the movable electrodes 52, 53 into clamping engagement with the workpiece. Energization of relay 148 closes contacts 166, 167 completing an energizing circuit for relay 101 which closes its contacts 100 to connect reactor 90 to supply 98, 99. Energization of relay 148 also closes contacts 182, 183 completing a circuit through contacts 179, 180, tapped coil 97 and rectifier 93 to a control coil 92 of the saturable reactor 90. Near the end of the heating period a timer 178 which is energized through contacts 174, 175 of relay 148 opens its contacts 179, 180 so that the rheostat 172 is inserted in series with control coil 92 and reduces the heating current. The heating operation is terminated when a timer 197 energized through contacts 193, 194 of relay 148 opens contacts 124, thereby de-energizing relay 120 and restoring the circuit to its initial position, whereupon timer 109 recloses to repeat the cycle. The operation in the manual position of the selector 102 is similar.
Patent GB-1328312-A (GB)
Title: Lightning arrester
IPC: H01T2/02
Filed: 1971-04-19
Abstract: 1328312 Spark gaps MITSUBISHI DENKI KK 19 April 1971 [6 March 1970] 23408/71 Heading H1D A lightning arrester device comprises main electrodes 1 and 3, Fig. 4, and a trigger electrode 4 in an electronegative gas such as SF 6 , the location of the trigger electrode being such that the ratio of the spark-over voltages of the two gaps G1 and G2 is between 0À5 and 2. Preferably the electrodes are connected by impedances Z 1  and Z 2  such that the entire voltage is applied across the gap G1 for a steep wavefront having a duration of 1 microsecond whilst only about 40% of the voltage is applied to G1 for a slow wavefront lasting about 100 microseconds. By matching the voltage/time curves of the impedance network (L2, Fig. 6, not shown) and the spark gaps (L1) the sparkover voltage may be made almost independent of the time between the application of the pulse and the initiation of the discharge (curve L3, Fig. 6). In one example the capacitors 5 and 6 are 160 and 100 pf respectively and resistors 7 and 8 are 100 kilohms and 40 megohms respectively. The main electrodes 1 and 3 may be hemispherical (Fig. 3, not shown), and means may be provided for magnetically blowing the arc.
Patent GB-1114689-A (GB)
Title: Improvements in or relating to electric bistable circuits
Inventor: MORRIS RICHARD MICHAEL
IPC: H03K3/28
Filed: 1966-05-25
Abstract: 1,114,689. Transistor bi-stable circuits. GENERAL ELECTRIC CO. Ltd. 5 May, 1967 [25 May, 1966], No. 23480/66. Heading H3T. [Also in Division G4] A bi-stable circuit comprises a single active element (such as transistor 1) the control electrode of which is coupled via a capacitor 6 to an input conductor 7, a switching means such as 11 being arranged to change the polarity of the voltage applied to the input conductor 7. As described, conductor 7 is initially biased negatively from the power supply 18 until contacts 13 are closed when a positive-going step passes capacitor 6 so as to turn on transistor 1, energizing relay 2, contacts 8 of which maintain transistor 1 conductive whilst contacts 11 change the polarity of conductor 7. The operation is restored when contacts 13 are again closed. Counters.-A plurality of such circuits may be arranged in cascade to form a counter, contacts 13 being replaced by a contact of the relay of the preceding circuit. Resetting contacts are provided between the base of each transistor and earth.
Patent GB-1431981-A (GB)
Title: Electric arc welding apparatus for welding joint between annular workpieces
IPC: B23K9/00
Filed: 1973-05-17
Abstract: 1431981 Reels CRC-CROSE INTERNATIONAL Inc 17 May 1973 [17 May 1972] 23523/73 Heading B8M [Also in Division B3] In Fig. 9 a spool 182, for consumable electrode wire (see Division B3), is of plastics and is held and located on a drum 184 respectively by a spool-biting cam 190 and a spline 185. The drum is mounted on a support shaft and frictionally braked by an adjustable spring- pressed plastics shoe 186 to prevent uncoiling. In Fig. 10, a spool support drum 195 is retained between parallel receiver walls R by spring-loaded pintlers 196 in a drum support hollow shaft 194. Ribs 207 on pintle retaining sleeves 198 engage wall grooves to prevent rotation of the shaft 194. An adjustable spring- pressed shoe 199 frictionally brakes the drum 195. A spool is held in place by spring catch 203.
Patent GB-697104-A (GB)
Title: Improvements in and relating to pocket clips on fountain pens and the like
IPC: B43K25/02
Filed: 1950-09-27
Abstract: 697,104. Spring clips. WAGNER, E. V. Nov. 14, 1951 [Sept. 27, 1950], No. 23658/50. Class 44 A clip b for the attachment of a fountain pen cap a or similar article to a pocket is provided with a lug b<SP>1</SP> which is inserted through a hole near the closed end of the cap and engaged by a spring metal strip c inserted within the open end of the cap so that it spans resiliently across the hole in the wall. The lug b<SP>1</SP> may be formed in the shape of a C with inturned end parts providing an eye, and the metal strap may be substantially in the shape of an arrow with a barbed head c<SP>1</SP> which may be bifurcated to give it transverse resilience for passing through the eye of the lug. Alternatively the ends of the lug may be turned inwardly upon the metal strip after positioning an offset portion of the latter substantially within a hole in the wall of the cap. In a further modification a lug with a T-head is secured by pushing a bifurcated strip between the said head and the inside wall of the cap so that the two limbs of the strip straddle the vertical limb of the T.