baber/WOPTO huggingface dataset:
Patent GB-610599-A (GB)
Title: Improvements in and relating to electric frequency changers
IPC: H04B7/155
Filed: 1945-10-12
Abstract: 610,599. Frequency changing circuits. GENERAL ELECTRIC CO., Ltd., and STENNING, L. C. Oct. 12, 1945, No. 15255/47. Divided out of 610,532. [Classes 40 (v) and 40 (vi)] An input carrier frequency, which may be signal-modulated, is converted to an output frequency by means of frequency multipliers or dividers or both, use being made of a local oscillator which heterodynes the carrier before and after the multiplier or divider stages in such a way that the output frequency is not affected by variations in the local oscillator frequency. In the example shown in Fig. 1, an input of 40 mc. is heterodyned at 10 by a local source 12 of 35 mc. The difference frequency 5 mc. is selected and amplified at 13 and fed to a limiter 14 and doubler 15, from which a 10 mc, wave passes to a mixer 16 fed with a 70 mc. wave through a doubler 17 from the source 12. The sum frequency of 80 mc. is selected at 18 and constitutes the output frequency. Any variation in the frequency of the local source 12 is reflected in the stages 13, 14 and is doubled at the stage 15, but is cancelled at the second mixer stage 16. In another example, Fig. 2, the input carrier is first reduced in frequency by the fourth harmonic of a local source 22 at the first mixer 21. A further reduction is effected at the mixer 25 by direct application of the locally-generated wave; and the output from 25 has its frequency divided by five at 27, 28, 29 and multiplied by two at the doubler 30. It is then raised in frequency by mixing at 31 with the second harmonic from the local source 22, the sum frequency being selected at 33 and utilized as the output, which as in the first example is independent of frequency variations in the local source. The divider 27, 28, 29 comprises a selector 28 of the fifth sub-multiple feeding a multiplier 29 which multiplies by four and feeds the mixer 27. The use of the frequencychanger for locking the frequency of radio transmitters is described in Specification 610,532.
Patent GB-1218631-A (GB)
Title: Improved silencer assembly for jet engines
Inventor: BRUNER GEORGES
IPC: F02K1/38
Filed: 1968-03-29
Abstract: 1,218,631. 631. Jet propulsion nozzles - silencing. BREGUET-AVIATION. March 29, 1968 [April 7, 1967], No. 15257/68. Heading F1J. The invention relates to a jet nozzle which is adapted to operate either with a silencer device operative or inoperative, the nozzle comprising a series of trough members which are pivotally mounted whereby the trough members may be disposed in the silencer operative position in which they project into the nozzle outlet or in the silencer inoperative position in which they lie adjacent the periphery of the nozzle, the trough members in the operative position permitting inflow of ambient air streams into the jet stream. In Figs. 1 and 2, the nozzle comprises a series of trough members 1 which are pivotally mounted at one edge 3 so that in the operative position shown the members 1 project radially into the jet stream and ambient air can flow through the trough members into the jet stream as indicated by broken lines. In the operative position a ring member 11 is moved to a rearward position as shown so as to permit ambient air flow to the trough members. Air flow through the trough members is guided by means of vanes 2. The trough members are movable by means of operating rods 5 and levers 8, the rods being mounted in bearings 6 in stationary structure 7. The ring member 11 is mounted for axial movement by means of riders 15 slidable in guides 14. In the inoperative position shown in Figs. 3 and 4 the troughs are swung outwardly so that they are disposed tangentially of the nozzle in abutting relation, the walls of the members being shaped so that they define a substantially cylindrical surface. In the inoperative position the ring member 11 is moved to the forward position substantially closing off the inlet to the trough members but leaving a small passage 16 for ambient air flow. In a further embodiment the ring member 11 is formed by four sector pieces which are inter-connected, the guide members for the sector pieces being shaped so that as the pieces move to the rearward operative position they move pivotally so as to define a divergent nozzle outlet, Fig. 5 (not shown). In the forward position the sector pieces define a cylindrical surface around the tangentially disposed trough members. In a further embodiment the ring member 11 is defined by a plurality of main sector pieces (lie) Fig. 9 (not shown) and auxiliary sector pieces (11f) which slidably engage into the adjacent main sector pieces.
Patent GB-984220-A (GB)
Title: Improvements in ultrasonic sounder systems
IPC: G10K11/35
Filed: 1962-04-19
Abstract: 984,220. Echo-sounding. CSF-COMPAGNIE GENERALE DE TELEGRAPHIE SANS FIL. April 19, 1962 [April 25, 1961], No. 15408/62. Heading H4D. A housing for ultra-sonic sounding equipment (e.g. of the type used for fish location) comprises a first envelope 1, Fig. 1a, secured under the hull of a ship and provided with an opening in which a second envelope 3 pivotally mounted at 6 may be raised or lowered by means of motor 11 and mechanical drive 14 (see also Figs. 2a, 3a and 3b). The ultra-sonic sounding equipment comprising a transducer 5 which is mounted within envelope 3 may be rotated about axis 9, perpendicular to the axis of pivot 6, by a motor 12 and mechanical drive 15. The control by the two motors therefore allows scanning in elevation and bearing to be effected. In all positions envelope 3 makes a water-tight closure for envelope 1 and to reduce hydrodynamic resistance to a minimum the leading and trailing edges of envelope 3 are formed as surfaces of revolution. Additionally, the leading edge of envelope 3 is transparent to the signals transmitted or received by transducer 5.
Patent GB-600280-A (GB)
Title: Improvements in or relating to electric vehicles
IPC: B60L50/30
Filed: 1945-06-18
Abstract: 600,280. Propelling vehicles. MASCHINENFABRIK OERLIKON. June 18, 1945, Nos. 15461, 15462, 15463 and 15464. Convention dates, June 17, 1944, Dec. 8, 1944, Dec. 22, 1944, and Jan. 11, 1945. [Class 79 (iii)] [Also in Group XXXIV] An electrically-propelled vehicle is also provided with a flywheel 1, driven by means of a motor-generator 3-3, whereby energy can be stored to drive the vehicle a certain distance without trolley wires, energy being extracted from the flywheel by causing the motorgenerator to supply current to the traction motors 5. The flywheel may run in a vacuum or in hydrogen alone or with some helium under a reduced pressure, to avoid overheating, and its bearing may be mounted in safety bearings (see Group XXXIV), whereby should the main bearing seize the safety bearings come into operation to allow the flywheel to run down. The current supplied to the vehicle is preferably 3-phase, but single-phase may be used to drive the flywheel and the motor-generator arranged to supply 3-phase current to the traction motors. For driving the flywheel a pole-changing short circuit armature motor is preferred, and asynchronous cascade motors with slip-ring armatures for traction, whereby a number of speeds may be obtained.
Patent GB-1344700-A (GB)
Title: So2 absorption system with regeneration of absorbent
IPC: C01B17/60
Filed: 1971-05-18
Abstract: 1344700 Sulphur dioxide from gases BABCOCK & WILCOX CO 18 May 1971 [11 Aug 1970] 15565/71 Heading C1A SO 2  is removed from the combustion gases of a S-containing fuel by (a) cleaning the gases to reduce entrained solid matter, (b) passing the cleaned gases through a MgO suspension thereby producing crystals of hydrated MgSO 3 , (c) heating the crystals to reduce their water of crystallization, (d) pelletizing the crystals with granulated carbon and a binder, (e) heating the pellets to form MgO particles and an SO 2  stream. The flue gases may be cleaned by wetscrubbing. The MgO suspension may also contain 10-50% by wt. Mg(OH) 2 . The granulated carbon may be pulverized coal. The binder may be MgSO 4  produced during wet-scrubbing. The pellets may be heated in a fluidized bed at a temperature of 1200-1800 F.
Patent GB-1234789-A (GB)
Title: Electroplating bath
IPC: C25D3/22
Filed: 1968-04-01
Abstract: 1,234,789. Electro-depositing zinc. KENVERT INTERNATIONAL CORP. April 1, 1968 [March 30, 1967; March 8, 1968], No.15660/68. Heading C7B. Ductile adherent electro-plated zinc deposits are obtained from baths of pH 3 to 10 containing per litre 10 to 250 g ammonium chlordie, 20 to 220 g zinc chloride, and 0À75 to 45 g of a surface active component including a primary agent selected from sulphated polyoxyalkenyl carbinamines, condensates of a C 6  to C 12  alkyl phenol with ethylene oxide or propylene oxide, or mixtures thereof. The bath may also include one or more secondary surface active agents selected from phosphoric acid esters of polyalkylene glycols and alkoxylated alkyl phenols and alkali metal salts of such esters, polyoxyalkylene carbinamines, certain imidazoline derivatives defined in the specification, natural phosphatides, higher alkyl betaines, alkali metal salts of N- tallow-#-iminodipropionic acid and alkali metal partial salts of N-lauryl-#-iminodipropionic acid, and also 0À04 to 1À5 g/l of a brightener selected from aryl aldehydes, alkyl aldehydes having at least 2 chain carbon atoms benzylidene and imidazoline derivatives as above. Organic colloids having known secondary brightening action may also be present. Buffering agents such as boric and acetic acid may be included in a concentration of up to 30 g/1 and from 10 to 100 g/l of chelating agents such as citric and malic acid may also be included in the baths. The baths may be operated at up to 70‹ C. and for current densities in excess of 200 ASF the baths are preferably of acid pH while alkaline baths are used for current densities below 50 ASF.
Patent GB-1462535-A (GB)
Title: Weldable bar especially for use in reinforcing concrete
IPC: C22C38/12
Filed: 1974-04-09
Abstract: 1462535 Weldable steel reinforcement bars HOOGOVENS IJMUIDEN BV 9 April 1974 [16 April 1973] 15715/74 Heading C7A A Si-semi-killed B.O.F. steel comprising:- and optionally V some -0À06, with Cr, No, Ni, Cu, Sn in total less than 0À15% and balance Fe is hot-rolled and air cooled, and has a yield strength of 40-42 Kg/mm<SP>2</SP> and good spot and stitch weldability, making it suitable for steel reinforcement members in concrete. Improved properties may be obtained by cold twisting.
Patent GB-556681-A (GB)
Title: Improvements relating to machine chucks, particularly chucks for screw-tapping machines
IPC: B23G1/18
Filed: 1942-11-07
Abstract: 556,681. Chucks. HEELEY & PEART, Ltd., and ALLDAY, G. W. Nov. 7, 1942, No. 15763. [Class 83 (iii)] Chucks for taps and other tools with polygonal shanks have the drive transmitted through balls that rotate during relative axial movement between the chucks and tools so that the latter may be inserted without stopping the rotation of the chucks. As arranged for a square shank tool four balls 10 are mounted in radial bores 12 in a centre part 11 held in the chuck body 6 by screws 13 that adjust the ball positions according to the shank size, being locked after adjustment at 14. Coiled springs may be interposed between the screws and balls. Two sets of balls axially spaced may engage the square of the shank. Rollers or pivoted segments may be employed instead of balls. The shank of the tap may be steadied near the middle of its length as described in Specification 556,682.
Patent GB-553471-A (GB)
Title: Improvements in and relating to precision gauges
IPC: G01B3/22
Filed: 1941-12-08
Abstract: 553,471. Gauging apparatus. HEXT, H. C. V. Dec. 8, 1941, No. 15804. [Class 106 (ii)] Relates to the type wherein a lever 15, one end 25 of which is adapted to engage the workpiece engages at its other end 16 with a worm 3 acted upon by a hair-spring 42, the worm carrying a pointer 19 moving over a dial 20, and consists in mounting the lever on a pivot 14 engaging at opposite ends by point contact in bearings provided in a housing and cover plate, the feeler being mounted on a boss 22 on the pivot. The feeler is provided with a split boss to grip the boss 22 and the lever is thickened at 27 to have secured to it a leaf spring 26 through a hole in which one end of the pivot is passed. The lever 15 has secured to it a small block 29 through a hole in which one end of a wire spring 31 is passed, the other end being secured in a diametrical groove in a disc 32 secured to a pivot 33 passing to the outside of the housing. A small setting lever attached to the pivot 33 outside the casing has its movement limited by a gap engaging a fixed stop, so that the spring 31 may be adjusted and hence the feeler 24 positioned to engage the top or bottom of the circular workpiece or into a neutral position. The end of the lever engaging the worm is rounded.
Patent GB-757084-A (GB)
Title: Substituted alkyl piperidines
Inventor: SPERBER NATHAN
IPC: C07D211/14
Filed: 1953-06-09
Abstract: The invention comprises piperidine compounds of the formula <FORM:0757084/IV(a)/1> in which R and R1 are like or different aryl, aralkyl, aralkenyl, cycloalkyl, cycloalkenyl, heterocyclic, alkyl or alkenyl groups, R2 is lower alkyl, R3 is hydrogen or an additional bond to the piperidine ring, R4 is hydrogen or a lower alkyl group, or aralkyl, and n is 1, 2 or 3 when the attached group <FORM:0757084/IV(a)/2> is o or m to the N-atom and 2 or 3 when the said group is p to the N, and R and R1 may contain certain constituents; also the quaternary salts and acid addition products of the above compounds; and the methods of preparing the compounds in which R3 is an additional bond to the piperidine ring by removal of H2O from the corresponding carbinol prepared by various methods; and the hydrogenation of the unsaturated product referred to.  In examples, the 6-methyl-N-methyl-3-benzhydrylidene piperidine is prepared by the action of conc. sulphuric acid on the corresponding carbinol obtained from ethyl-6-methyl nicotinate; the product is reduced to give the corresponding benzhydryl compound and the hydrochloride, methyl iodide and bromide quaternary salts, and citrate are described; other 6-alkyl and N-alkyl compounds, the corresponding 2:4-dimethyl-, 2:6-dimethyl-, other 2:6-dialkyl-, 5:6-dimethyl-, 2-methyl-, 5-methyl-, 4:5-dialkyl-, and 4:6-dimethyl-, 2:4:6-trimethyl, and other alkyl N-alkyl 3- or 4-benzhydrylidene piperidines, the corresponding 1-phenyl-1-(6-methyl - N - alkyl - 3 - piperidylidene) - butanes and p-chlor, and p-methoxy (phenyl) derivatives of these, a N-cyclohexenyl, a benzyl with some quaternary compounds; and 6:6-dimethyl -, 2:6:6 - trimethyl - N - methyl-3-benzhydrylidene piperidines are also described.  The quaternary compounds include alkyl halide, dimethyl sulphate and similar addition products.  The acid addition salts include hydrochloride, sulphate, tartrate, maleate, citrate and other non-toxic salts.  The carbinols may be prepared by the methods of Specification 740,740 for the monoalkyl-substituted ring, or by methods analogous to those of the said Specification for compounds having two or more ring-alkyl groups.  Starting materials.  Alkyl pyridine and piperidine carboxylic acids and esters may be obtained by oxidation of alkyl pyridines or cyclization reactions selecting the appropriately substituted starting materials.  Products having alkyl groups corresponding to any of the piperidine products claimed may be prepared; cyclization products containing, initially, hydroxyl groups may be converted into chloropyridine carboxylic acids or esters and dehalogenated subsequently (see Examples 36, 40, 43, 49).
Patent GB-892232-A (GB)
Title: Improvements relating to a method of assembling a unit of a heat exchanger
Inventor: POTTER HARRY
IPC: F22B37/10
Filed: 1958-05-16
Abstract: 892,232. Pipe joints. THOMPSON WATER TUBE BOILERS Ltd., JOHN. May 14, 1959 [May 16, 1958], No. 15853/58. Class 99(1). [Also in Group XIII] In a method of assembling a prefabricated cylindrical bank of economiser, reheater, or superheater tubes 1 in a casing 7 of corresponding circular cross-section, the overall external diameter of the bank, including a supporting framework 2 and projecting transverse headers 3, 4 at each end of the bank, is chosen to be slightly less than the internal diameter of the casing by an amount which, after the bank 1 has been inserted axially within the casing, allows the bank to be moved transversely for the ends of the headers to project outwardly beyond base flanges 10 welded around corresponding apertures 8 in the wall of the casing 7. The end of each header is welded at 23 to a co-operating flanged tube 11 and then the bank is moved transversely until annular spigots 20 on the flanges 19 of the tubes 11 engage in corresponding recesses 15 in the base flanges 10 and the bank 1 is located on lugs (not shown) centrally of the casing. The co-operating flanges 19, 10, which are then secured together by bolts (not shown) which pass through clearance holes 22 in the flanges 19 and engage in corresponding threaded blind bores 17 in the flanges 10, being finally seal-welded together at the junctions of their shoulders 24. Instead of providing the flange 19 with an annular spigot 20 both of the flanges 10, 19 made be grooved to receive a separate ring made e.g. of soft iron. In a modification the base flanges 10 are replaced by flanged tubes which are bolted to the flanges 19 of the tubes 11. The bank may comprise e.g. mixed high pressure and low pressure tubes with appropriate headers at each end the projections of the headers, which preferably should extend in line vertically one above the other, in any case being disposed in an axial zone which subtends at an angle of not more than 45 degrees to the centre of the casing.
Patent GB-1480671-A (GB)
Title: Process for the preparation of 1,1-dihalo-4-methyl pentadienes
IPC: C07C17/23
Filed: 1975-04-17
Abstract: 1480671 1,1 - Dihalo - 4 - methyl - 1,3- or 1,4-pentadienes IMPERIAL CHEMICAL INDUSTRIES Ltd 5 April 1976 [17 April 1975] 15862/75 Heading C2C Compounds of the general formula where each X is halogen and R is by treating a haloalcohol of general formula with 1-2 moles of powdered Zn per mole of the haloalcohol in glacial acetic acid at 25-110 C. Preferably 1À4-1À6 moles of Zn are used at 40-60 C. The product obtained may be further treated with a catalytic amount of an organic acid other than acetic acid, e.g. f-toluenesulphonic acid, at 80-120 C. in order to obtain the maximum yield of the 1,1-dichloro or-dibromo 4-methyl-1,3-pentadiene. 1,1,1 - Trichloro - 2 - hydroxy - 4 - methyl - 3- pentene is obtained by reacting anhydrous chloral and isobutylene.
Patent GB-679302-A (GB)
Title: Improvements in or relating to tractor-trailer vehicles
Inventor: WILSON SYDNEY
IPC: B60P3/40
Filed: 1950-06-26
Abstract: 679,302. Earth-moving bowl scrapers. BLAW KNOX, Ltd. June 26, 1951. [June 26, 1950] No. 15896/50. Class 68 (i). [Also in Group XXXI] In a vehicle comprising a tractor part 1 mounted on a single pair of wheels 3 which are driven by a power unit 7 on the tractor part and which part is articulated to a trailer part 4 also having a single pair of wheels 5 so that the two parts are relatively movable in a horizontal plane to permit steering, the wheels of the trailer part are driven by an engine 8 on the trailer part. The trailer 4 supports a scraper bowl 15 which can be lowered to dig into the ground by a cable system 25 and winding drum 26 driven through a clutch by the tractor engine 7. The trailer engine is controlled hydraulically through pipe lines 10 from the tractor 1. The trailer can pivot relative to the tractor both horizontally and vertically and the vehicle is steered by a hydraulic ram between tractor and trailer.
Patent GB-1033619-A (GB)
Title: Electric starting mechanism for internal combustion engines
Inventor: SEILLY ALEC HARRY
IPC: F02N15/06
Filed: 1962-04-26
Abstract: 1,033,619. Engine turning gear. C. A. V. Ltd. April 16, 1963 [April 26, 1962], No. 15925/62. Heading F1K. [Also in Division H2] In an I.C. engine starter mechanism the rotor of the electric motor is mounted on a tubular spindle which surrounds the output shaft and is secured to it at the end remote from the pinion. Rotor 12 is mounted on a tubular spindle 13 surrounding shaft 14 which carries a commutator 15 and a bearing bush 16 supported on a spigot 17 of cap 18 forming a closure for the casing 10. Shaft 14 has splines forming an interference engagement with splines on spindle 13 and has a central waist to provide torsional resilience, the forward extension 14a being mounted in bearing 19 in cover 20. A pinion 22, formed on sleeve 21 which is engaged by a quick pitch screw thread with shaft extension 14a, is retained in engagement with engine toothed wheel 23 by balls 39 held in recesses 41 by a spring loaded collar 37, the balls seating in groove 40 in the disengaged position. A solenoid winding 24 when energized draws in armature 25 against spring 26 until ring 27, held against abutment 25a by spring 28 engages ring 29 to move pinion 22 into engagement with wheel 23. If the teeth on pinion 22 and wheel 23 engage end to end the armature continues to move against spring 28 until contacts 36, 36a close and the pinion is thrown into engagement by the quick start thread. Bolts 31, (Fig. 2) (not shown), pass through flange 30, a transparent piece 32, casing 10 and end cap 18. A pair of curved brushes 33 and an annular carrier 35, for a further pair of brushes 33a are mounted on bolts 31.
Patent GB-817697-A (GB)
Title: Hard-facing alloys
Inventor: CAPE ARTHUR TREGONING
IPC: C22C38/30
Filed: 1957-05-21
Abstract: An iron-base alloy, having a Rockwell C hardness of 45 to 68 and which is particularly suitable for use as a hard-facing alloy has the following composition in percentage by weight: C above 1-4.5, Cr 17-27, Mo 4-10, C 5-25, Si 0-less than 4, Fe and impurities the balance.
Patent GB-1468174-A (GB)
Title: Catching toy
IPC: A63B67/08
Filed: 1974-04-03
Abstract: 1468174 Catching toys; catching game W D DEARING and A V TINGLE [trading as ENGINEERING INSTALLATION SPECIALISTS CO] 3 April 1974 [4 April 1973] 16079/73 Headings A6D, A6H and A6S A toy for throwing and catching play objects comprises a hand-held support 1 with a plurality of mounting means for detachably mounting and varying the relative positions of a plurality of catching stations 3 whereby a play object may be thrown from one station by movement of the support 1 and caught at another. The support 1 is preferably a rod or bar and the catching stations 3 shallow circular cups, e.g. of plastics material, that have pins 4 fitting holes 2 in the rod. Additional holes 2 enable alternative spacings of the cups 3. A grip 5 is at one end of the rod 1. The play object may be a disc, e.g. of plastics material, on which may be mounted a frog and which fits loosely inside a cup alternatively it may be a ball. The catching stations 3 and rod 1 may be in the form of a single plastics moulding. Preferably four catching stations 3 are provided, spaced linearly on the rod 1. One or more additional catching stations may be formed integrally with the rod, e.g. as a onepiece moulding.