baber/WOPTO huggingface dataset:
Patent GB-399388-A (GB)
Title: Improvements in earthing devices for electrical apparatus
IPC: H01R4/66
Filed: 1933-02-21
Abstract: 399,388. Earthing-devices. KREMNER, S., 49A, Shudehill, Manchester. Feb. 21, 1933, No. 5333. [Class 36.] In an earthing-device comprising a perforated conductive container charged with a mixture which is adapted to react with the surrounding soil through the perforations, to prevent deterioration of the mixture during storage of the device, the perforations are closed by a readily frangible seal which is broken prior to the installation of the device. The mixture may comprise either common salt or sal-ammoniac or both, and may include armenian bole, copper sulphate and sand. In the construction shown, a copper earth tube 1 having perforations 6 and containing a mixture 2 has the perforations sealed by a paper wrapping 8 which is covered by a cellulose coating 7. A tape 9 for stripping the paper wrapping and the cellulose coating from the tube is disposed under the paper wrapping. The upper end of the tube is closed by a cardboard disc 3 and covered by a cellulose cap 4 which extends over the terminal bolt 5. The mixture 2 consists of 14 per cent of sand, 50 per cent of common salt, 35 per cent of sal-ammoniac and 1 per cent of armenian bole. The mixture may be modified by the addition of 5 per cent of copper sulphate which replaces a similar quantity of sal-ammoniac.
Patent GB-730422-A (GB)
Title: New or improved friction device
IPC: F16D13/04
Filed: 1953-02-26
Abstract: 730,422. Friction clutches. LAMBERT BRAKE CORPORATION. Feb. 26, 1953 [Aug. 22, 1952], No. 5435/53. Class 80 (2). A torque-assisted disc clutch 7, 9 between shafts 1, 2 is engaged by axial movement of a sleeve 28 so as to move balls 29 radially along converging grooves 26, 27 in relatively-rotatable members 17, 21 and so move one of these latter axially to initiate clutch engagement, the member 17 rotating with the clutch discs 9 while the member 21 is adapted to be frictionally engaged with the end clutch disc 7, the grooves 26, 27 having inclined or curved side walls so as to provide self-tightening of the clutch under load. As shown in Fig.. 1, discs 7 are splined on a member 3 secured on shaft 1 and discs 9 are splined in a housing sleeve 11. Member 17 is secured in sleeve 11, while member 21, adapted to be frictionally engaged by the end disc 7, is secured on shaft 2, and the grooves 26, 27 converge outwardly. A backplate 12 is adjustably secured in sleeve 11. Sleeve 28 is loose on shaft 2 and on moving it to the left, by rocking a fork 41, its bevelled end 30 forces balls 29 outwardly, thus moving member 17, and with it sleeve 11 and plate 12s to the right against the action of return springs 31 to initiate clutch engagement, the ball, riding on to the cylindrical part of sleeve 28, as shown, so as to hold the clutch engaged until sleeve 28 is withdrawn to the right. In the form shown in Fig. 4, discs 7 are splined in a sleeve 11<SP>1</SP> secured to shaft 1 by a member 20<SP>1</SP>, discs 9 are splined on a member 31 coupled through a splined sleeve 2<SP>1</SP> to shaft 2, member 17 is adjustably secured on member 3<SP>1</SP>, a backing plate 451 is secured on member 31, and member 21, adapted to be frictionally engaged with the end disc 7, is freely mounted on member 3<SP>1</SP>. The control sleeve 28 encircles member 17 and, on moving it to the right, an inclined surface 30<SP>1</SP> therein forces the balls 29 inwards along 'the inwardly-converging grooves 26, 27 to move member 21 to the left, against the action of return springs 31<SP>1</SP>, to initiate clutch engagement, the balls riding on to the cylindrical interior of sleeve 28 so as to hold the clutch engaged.
Patent GB-1208851-A (GB)
Title: Field regulation of asynchronous machines
IPC: H02P27/04
Filed: 1969-01-31
Abstract: 1,208,851. Automatic current and voltage control. SIEMENS - A.G. Jan.31, 1969 [Feb. 7, 1968], No.5444/69. Heading G3R. A system for regulating the field of an asynchronous machine 5 comprises converters 1, 2, acting alternately as a rectifier and an inverter, connected to a three phase source N. The voltages of these converters are applied to smoothing chokes and a capacitor 3 forming a direct-voltage intermediate circuit associated with the machine 5 through converter 4. A signal proportional to the load current I<SP>1</SP> is applied through a field simulator 6 for comparison with a field reference signal at the input of a field controller 7. The voltage across the capacitor 3 is compared with the output signal from the controller 7 at the input to a voltage controller 8 which is connected to control sets 9, 10, for determining the firing angles of the converters 1, 2. The smaller of currents I 1 , I 2 , is detected by unit 14 whose output signal is compared with a signal derived from a function generator 15, the difference signal being applied through a circulating-current controller 11 to the control sets 9, 10. The function generator 15 receives a signal representing the current I in the intermediate circuit, this signal being the rectified difference between the currents I 1  and I 2 . When the current I falls below a limiting value, the output of the function generator is increased to prevent unstable operation. The function generator comprises a unidirectional amplifier 17 having equal resistors R in its input and negative-feedback circuits. Diodes 18, 19, are connected to resistor 20 so that positive potential is developed at their junctionpoint which is connected to an inverting amplifier 21. The latter receives an additional signal U4 from potentiometer 25, and its output is limited by diode 22 associated with potentiometers 23, 24, which determine the minimum output. The maximum output is determined by the signal U4 and occurs when the input signal I is zero.
Patent GB-208057-A (GB)
Title: Improved mould for casting ribbed stereoplates
IPC: B41D3/00
Filed: 1923-02-26
Abstract: 208,057. Winkler, C. Feb. 26, 1923. Stereotype, cooling. The hollow water-cooled core a of a mould for casting ribbed stereotype plates is provided on its inner face with grooves f between the ordinary rib-forming grooves e on its outer face so that the thickness of the wall of the core is substantially the same at all parts and a more uniform cooling of the cast plate is ensured.
Patent GB-267909-A (GB)
Title: Improvements in or relating to carpet sweepers
IPC: A47L11/33
Filed: 1927-02-28
Abstract: 267,909. Bissell Carpet Sweeper Co., (Assignees of Owen, I. J.). March 19, 1926, [Convention date]. Carpet-sweepers.- The case 1 of a carpet - sweeper is provided at each end with a guard-plate 5 having a base portion 52, a horizontal portion 55, and a downwardlyprojecting portion, 56, the latter being formed with a depression 51 to receive a projecting first hub on the brush wheel 4. The portion 52 has an angular rib 59 with knobs 59<1> for retaining the forked handle vertically when the sweeper is not in use. The dust-pans 6 are carried by pivots 61 which project through slots 22 in the ends of the case and constitute the axles for the floor wheels 63. A double spring 64 adapted to bear against the top of the case is formed with bent ends pivotally connected to the dust-pans. The outer ends of the pans normally engage the lower edge of the sides of the case. In operation, the pressure on the handle during use causes the brush wheels 4 to be engaged by the floor wheels 63, their relative movement being limited by the pivots 61 and slots 22. Specification 267,908 is referred to.
Patent GB-810895-A (GB)
Title: Improvements in or relating to control mechanism for motor vehicles
Inventor: SIMPSON JOHN KEITH
Filed: 1957-02-19
Abstract: 810,895. Change-speed control; gearing for stopping and starting machinery. AUTOMOTIVE PRODUCTS CO. Ltd. June 5, 1957 [Feb. 19, 1957], No. 5641/57. Class 80 (2). To control the setting of a motorcar engine throttle during a ratio shift, a switch 23 on a steering- column-mounted ratio-shift lever 11 is closed when the lever is operated, to energize a solenoid 29 which conditions a valve 27 to connect an engine inlet manifold depression reservoir 21 to a servomotor 13 disengaging a main, centrifugally engaged, clutch and to a servomotor 25 which acts through linkwork described below to close the throttle, a drag-ring switch 24 in the main clutch closing when the driven clutch member overruns the driving clutch member to energize a solenoid 31 and condition a valve 28 to connect the vacuum reservoir 21 to a second servomotor 26 which opens the engine throttle by overriding the servomotor 25. Depression of the accelerator pedal turns a shaft 16 connected through a resiliently expansible link 38 to an arm 39 freely rotatable on a spinble 18 connected to the throttle valve. A projection 44 on the arm 39 engages a projection 42 on an arm 41 fast with the throttle spindle 18. The servomotor 25 is connected by a rod 47 to an arm 45, freely rotatable on the throttle spindle 18 and having a projection 46 which can engage with the arm 39. The servomotor 26 is connected to an arm 48 freely rotatable on the throttle spindle 18 and engaging at its end with a second projection 43 on the arm 41 fast with the throttle spindle. Springs within the servomotors 25, 26 and stops (not shown) hold the parts. in the position shown when the valves 27, 28 are not conditioned to connect the servomotors to the vacuum reservoir, the throttle spindle 18 then being movable between its fully closed and fully opened positions, without expansion of the resilient link 38, by turning the accelerator pedal shaft 16. When a ratio shift is initiated, the servomotor 25 is connected to the vacuum reservoir 21 and pulls the arm 45 down to engage the projection 46 with the arm 39 which turns, expanding the resilient link 38 without moving the accelerator pedal, and allows the throttle valve to be moved towards its closed position by its spring. If the driven member of the main clutch overrides the driving member, the drag-ring switch 24 closes and connects the servomotor 26 to the vacuum reservoir 21, so that the arm 48 is turned to engage its end with the projection 43 and thus turn the arm 41 fast on the throttle spindle 18 in the throttle opening direction. Figs. 4-7 (not shown) illustrate a preferred embodiment of a control unit having arms and links, &c., arranged as shown diagrammatically in Fig. 3.
Patent GB-159202-A (GB)
Title: Process for the manufacture of sulphides of alkaline and earthly-alkaline metals
IPC: C01B17/26
Filed: 1921-02-19
Abstract: Sulphates of the alkali and alkaline-earth metals are mixed with the necessary amount of coal, which is preferably non-bituminous, and converted to the corresponding sulphides by means of a reducing flame obtained by the combustion of coal, in p  the form of an impalpable powder, with heated air in such quantity that only carbon monoxide is formed.  Oils or hydrocarbons may be atomized and used in place of the pulverized coal, and steam may be admitted with the air, the latter being introduced in insufficient quantity to burn the hydrogen liberated.  The reduction may be carried out in a reverberatory furnace such as is described in Specification 140,096, but preferably it is performed in a rotary furnace having its axis slightly inclined to the horizontal.  Hot air is injected at the lower end together with the oil or powdered coal and the mixture of sulphate and coal is fed in continuously at the upper end.  The combustible gases leaving the furnace are utilized to heat the air injected with the coal or oil.
Patent GB-549060-A (GB)
Title: Improvements in antifogging and stabilizing agents for photographic emulsions
IPC: G03C1/34
Filed: 1941-05-02
Abstract: 549,060. Pyrimidine derivatives. KODAK, Ltd., and KNOTT, E. B. May 2, 1941, No. 5759. [Class 2 (iii)] [Also in Group XX] Compound used in photography having the formula in which X represents halogen and R1, R2, and R3 represent hydrogen or simple substituents and in which R1 more particularly is hydrogen, alkyl, aryl, aralkyl, amino, hydroxy, halogen, or alkylmercapto and R2 and R3 are hydrogen, aryl, aralkyl, halogen, hydroxy, or amino may be prepared by suspending in water a suitable pyrimidine or a salt thereof, having hydrogen or halogen in the 5-position, and adding the required amount of halogen, viz. 4 atoms of halogen per molecule of pyrimidine for the compounds having hydrogen in the 5-position, and 2 atoms of halogen per molecule for compounds having halogen in the 5-position. A pyrimidine having halogen in the 5-position may be treated with a different halogen to give two different halogens in the 5-position, e.g. chlorine and bromine. Suitable reacting pyrimidines are 2:6-dihydroxypyrimidine, 2:6-dihydroxy-4-methylpyrimidine, 2:6 - dihydroxy - 4 - methyl - 5 - bromopyri - midine, 2 - hydroxy - 4 - aminopyrimidine, 2:6 - dihydroxy - 4 - aminopyrimidine, 2 - amino - 4:6 - dihydroxypyrimidine, 2 - hydroxy- 4:6 - dimethylpyrimidine, 2 - methyl - 4:6 - dihydroxypyrimidine, 2 - methyl - 6 - hydroxy - pyrimidine, 2.4 - dimethyl - 6 - hydroxy - pyrimidine, 2 - phenyl - 6 - hydroxypyrimidine, 2 - phenyl - 4 - methyl - 6 - hydroxypyrimidine, 2 - amino - 6 - hydroxypyrimidine, 2:4 - dihydroxy - 6 - phenylpyrimidine, 2 - amino - 4 - methyl - 6 - hydroxypyrimidine, 2 - ethylmercapto - 4:6 - dichloropyrimidine, and 2:4:6 - trichloropyrimidine.
Patent GB-327520-A (GB)
Title: Mechanical drive and coupling for dynamo-electric generators
IPC: F16H37/00
Filed: 1929-02-21
Abstract: 327,520. Frost, S. G. Feb. 21, 1929. Driving - arrangements. - Mechanism for driving a generator either by hand or from a mechanical power source comprises a crank handle which transmits its drive through a hollow shaft and speed gearing to the rotor of the generator, and a driving connection between the mechanical power source and the rotor passing through the tubular spindle and including a shaft which can easily be detached from the rotor without the use of tools and without altering the generator structure. The invention is particularly applicable to wireless signalling generators such as are used on aircraft, whereby in an emergency a signalling commutator can be applied to the machine, as described in Specifications 175,720, and 226,626, [Class 40 (v), Wireless signalling &c.], and the signal radiated by merely driving the generator by hand. The casing a of the generator has a connecting box c and a switch d for changing over from one mode of signalling to another, and an extension e of the end plate a<2> houses the signalling commutator. The rotor shaft h ends in a square projection k which engages within a socket l formed on the end of a flexible shaft m, which is driven at its other end by an air screw. The hand drive comprises a handle o, the boss q of which is pinned to a tubular shaft p, which drives the rotor shaft through a free wheel clutch t and through gearing u, v carried by a cage s, the pinion u engaging with a fixed toothed ring w, and the spur wheels v engaging a pinion g on the rotor shaft. The boss of the hand crank is threaded to receive the end coupling r of the flexible shaft casing n, and during normal drive by the air screw the handle o is stationary on account of the free wheel clutch t. For hand drive, the member r is unscrewed and the coupling k disengaged. In a modification, Fig. 3, an air screw y is adapted to be held by a nut on a shaft m, and the cap r of the casing containing this shaft is screwed directly on to the end plate a<1> of the generator. When the hand drive is required, the cap r is unscrewed and a crank can be fixed on the squared end of the hollow shaft p. The free wheel clutch may be omitted and the shaft p is then allowed to rotate. The air-screw adapter r may be screwed on to the crank boss as in Fig. 1, in which case the crank o may be left on the shaft p. The crank may be reversed on the shaft or the handle may be hinged to avoid fouling the air-screw. The crank and power drives may be arranged at opposite ends of the machine.
Patent GB-1432305-A (GB)
Title: High sensitive photographic mask material
IPC: G03F1/54
Filed: 1974-02-08
Abstract: 1432305 Photographic material for photomasks AGFA-GEVAERT AG 8 Feb 1974 [8 Feb 1973] 05858/74 Heading G2C Photographic material for producing masks comprises in order (a) a transparent support, (b) a metal, metal oxide or Si layer (c) a photoresist layer e.g. a photopolymerizable or polyizer/ azide layer, (d) a silver halide layer the layer (c) or a layer between (c) and (d), containing a dye which has an absorption maximum at a wavelength to which the silver halide is sensitive but does not absorb in a region to which the photoresist is sensitive. Specified photo-resists are cyclized polyizoprene/azide, polymers containing sulphonyl azide groups (e.g. Specification 1062884), polyvinyl cinnamates, photocross linkable polymers as Specifications 1384343 and 1373146 and photopolymerizable compositions as Specification 741441. Preferably an adhesion promoting layer of a hydrolysable organosilane is applied to the photo-resist layer (c) before application of layer (d). The specified screening dyes are of Formula. with an absorption maximum of 546 nm. The specified silver halide emulsion is a green sensitized silver bromoiodide emulsion with an average grain diameter of 0�05 millimicrons.
Patent GB-622016-A (GB)
Title: Improvements in and relating to valved bags
IPC: B65D30/24
Filed: 1947-03-01
Abstract: 622,016. Paper and like bags. MEDWAY PAPER SACKS, Ltd., and WINSKILL, J. W, March 1, 1947, No. 5920. [Class 94(ii)] A paper sleeve 7, for an internal or external valve of a bag, is provided with two springy strips 11 at the mouth end of the sleeve which hold the mouth closed. Each strip, which extends across the whole width of a sleeve side, may be made of cellulose-acetate sheeting, and may be held in position by a band 13 of paper pasted or glued to the sleeve. The strips may be forced apart by a filling spout.
Patent GB-249836-A (GB)
Title: Improvements in or relating to receptacles for writing leads, needles and like articles
IPC: A45C11/34
Filed: 1926-03-03
Abstract: 249,836. Blyantfabriken Viking Aktieselskab. March 30, 1925, [Convention date]. Boxes made from special blanks, container pivoted within shell; contents, delivering.-A receptacle for pencil leads, needles &c. comprises two channel-shaped members d, e resiliently connected -together by a common end wall f and adapted to telescope one within the other so that openings b, h<1> located in the overlapping walls at the opposite end of the device and normally held out of register with one another can be brought into register by pressing, inwards the inner member e. The receptacle is preferably formed from a single blank.
Patent GB-880118-A (GB)
Title: Steam engine
IPC: F01B29/12
Filed: 1959-02-20
Abstract: 880,118. Steam engines; valve gear; cylinder mountings. HILL, R. A. Feb. 20, 1959 [March 3, 1958], No. 5978/59. Classes 122 (1), 122 (2) and 122 (3). In a steam engine having two pistons 26, 30 working in cylinders 18, 20 the distributer valves 92, 94 are each actuated by mechanism including a member 142 which is adapted for oscillatory movement only on a fixed axis 140 parallel to the axes of the engine crank-shaft 50 and has an arcuate slot 144 passing through and extending on both sides of the axis 140, a control rod 148 pivoted at one end to the valve and having its other end engaging in the slot 144, and an eccentric 130 mounted on the crank-shaft for oscillating the member 142 and reciprocating the valve when the point of engagement of the control rod in the slot is spaced from the axes 140. Each eccentric 130 acts through a yoke 137 which is pivoted on a bolt 140 screw-threaded into a crosshead 136 and the member 142 is screwed to the yoke; the end of the control rod 148 has an enlarged head to retain it in the slot 144. The two control rods are manually adjusted through actuating rods 160 for positioning the ends of the rods in the slots 144 according to the desired stroke. The valves 92, 94, which are hollow, are mounted centrally between the two cylinders 18, 20 in the cylinder block 10 and are each formed with an elongated port 120 communicating with a port 116 leading into a steam chest 112. Ports 108 at the ends of the valves align with ports 98, 100, 102, 104 in the cylinder walls at appropriate positions of the valves. Exhaust ports 96 in the valves open into an exhaust box 124. The cylinder block 10 and crankcase 12 are connected together by stanchions 34, 36, 38, 40 which extend through the crankcase for the adjustable support of the split bearings 52, 54 of the crankshaft. Cross-heads 64, 70 slidably mounted on the stanchions provide connection for the piston-rods 28, 32 and connecting rods 72, 80. The drive from the crankshaft to a gear 86 is taken from a gear 84 which is mounted on the crank-shaft and secured by screws 174 to plates 170 keyed to the crank-shaft; disconnection of the screws 174 enables the gear 84 to rotate freely on the crank-shaft.
Patent GB-591937-A (GB)
Title: Improvements relating to the supporting on boat hulls of apparatus for making investigations under the surface of water
IPC: B63C11/48
Filed: 1938-02-26
Abstract: 591,937. Stuffing-boxes. PAINE, H. SCOTT. Feb. 26, 1938, No. 6121. [Class 122 (v)] A movable streamline sectioned tube 1 is projected through the bottom 30 of a boat through a gland member 5 having fixed bearings 6 and 7 and two rollers 10, 12 shaped to fit the tube section. The roller 12 is adjustable. The tube is raised by the wire 23 operated from a winch, and the lock 27, 28 secures the tube in its adjusted position.
Patent GB-877909-A (GB)
Title: A beet digging wheel
IPC: A01D25/04
Filed: 1960-02-22
Abstract: 877,909. Beet-harvesters. APPEL, H. C. Feb. 22, 1960, No. 6226/00. Class 6(3). In a beet-harvester of the type having 4 pairs of mutually-inclined beet-lifting wheels which prise the beets from the gound, each wheel comprises two parts, viz. a hub, Fig. 4, and a rim, Fig. 3 ; the hub has a plurality of radial spokes 19 which are secured, by bolts 25, to similar spokes 33 extending inwardly from the inner periphery of the rim 14 which is provided with integral lugs 28 along its outwardly-tapering edge 31. The pairs of spoke-halves 19, 33 are joined by rebated surfaces 22, 23 and the composite spokes taper outwardly from a point 26 of maximum thickness to the rim. Curved webs 21 extend between the spokes.
Patent GB-241089-A (GB)
Title: Automatic gas bag pressure regulator
IPC: A61M16/10
Filed: 1925-03-07
Abstract: 241,089. Wellesley, G., and Coxeter & Son, Ltd. March 7, 1925. Pressure-regulating valves.-The pressure in a gas bag 1, more particularly for supplying anaesthetics, is automatically regulated by means of an elastic band 2 disposed round the bag and connected with a pair of arms 3, one integral with a carrier 4 and the other pivoted on the carrier to compress the inlet tube 5. A spring arm 9 with a regulating screw 10 limits the movement of the pivoted arm and so regulates the pressure to be maintained. Fig. 3 shows a modification in which a foot-controlled rod 14 operates rods 11 which bear at their other ends 8<a> on the inlet tubes of two bags which may contain different gases. The arms 3 may be on the same side of the bag the band 2 being crossed and may be connected by springs or the like. The arms 3 are fitted with rounded ends or rollers 7, 8.