baber/WOPTO huggingface dataset:
Patent GB-900204-A (GB)
Title: Improvements in or relating to circuits for providing automatic gain control in radio receivers
IPC: H03G3/20
Filed: 1961-03-24
Abstract: 900,204. Automatic gain control. PHILIPS ELECTRICAL INDUSTRIES Ltd. March 24, 1961 [March 28, 1960; Jan. 26, 1961], No. 10917/61. Class 40 (6). An automatic gain control circuit comprises a pair of tuned circuits 3, 4 coupled by a potential variable capacitor, which, as shown, is a diode 10. Circuit 3 is fed from preceding stages 1 of the receiver, which may be of the transistor type, by means of coupling coil 2, while circuit 4 feeds succeeding stages 16, which also supply the gain control voltage, by means of coupling coil 15. A wide range of control is obtained by neutralizing the coupling provided by diode 10, at one particular capacity value, by means of neutralizing condenser 9 coupling the other ends of the tuned circuits 3, 4 which are earthed for R.F. at an intermediate point.
Patent GB-876708-A (GB)
Title: Process for producing alkylhydrosilanes
IPC: C07F7/08
Filed: 1959-03-31
Abstract: Alkylhydrosilanes are prepared by reacting hydropolysiloxane [HSiO 3/2 ]n with an alkyl aluminium halide of the formula RpAlqXr where R is alkyl, e.g. methyl or ethyl, X is halogen, p is 1-5, q is 1 or 2, and when q is 1, p is 1 or 2 and r is 3-p, and when q is 2, p is 2-5 and r is 6-p.  The reaction may be performed in an inert atmosphere and an inert solvent may be added.  The temperature should preferably be not higher than 250 DEG C.  Anhydrous aluminium chloride may be added to the alkyl aluminium halide.  Disproportionation occurs in the reaction yielding a mixture of alkylhydrosilanes, alkylsilanes and sometimes alkylchlorosilanes.  The solid residue may be hydrolysed to silanols.  In the example, methyl aluminium sesquichloride is reacted with hydropolysiloxane, forming tetramethylsilane and a mixture of dimethyldihydro-and trimethylhydro-silanes.
Patent GB-667539-A (GB)
Title: An improved table game
IPC: A63F7/06
Filed: 1950-05-04
Abstract: 667,539. Table games. BLOCK, E. May 4, 1950, No. 10993/50. Class 132 (ii). A table game comprises a playing surface 1 hounded by walls 2 and having goals 3 and a ball 4 propelled by figures 5 each mounted on a dished magnetisable base disc 7 having a central depression 9 and moved about the surface by magnets 11 carried on handles 14 for manipulation beneath the surface. A layer 6 of rubber is interposed between the figure and the disc 7. The slope of the rim 8 of the disc 7 and the centre of gravity of the figure are such that, if the figure is tipped over, the magnet when placed thereunder will right the figure again. The magnet is relatively weak so that, on rapid movement thereof, the figure will not follow. The ball 4 contains an irregularly disposed mass to bias it.
Patent GB-614440-A (GB)
Title: Improved locking device for electric-light and like fittings
IPC: H01R33/97
Filed: 1946-04-10
Abstract: 614,440. Two-part couplings. PHILIPS LAMPS, Ltd. April 10, 1946, No. 11009. Convention date, Aug. 29, 1941. [Class 38 (i)] [Also in Group XXV] A locking device for a coupling consists of a screwed locking pin 21 in one part of the coupling abutting against an inclined surface 23 on the other part, whilst pins 1 and 2 in the one part engage helical or bayonet slots 6 and 7 in the other. By arranging for the surface 23 to have a steeper slope than slots 6 and 7, it becomes impossible to turn and unlock the coupling without first withdrawing the locking pin 21, which is provided with a knurled head 24 for this purpose. The upper part of the coupling carries two flatarcuate contacts which bear. on two spring, plunger contacts carried in the lower part, when the coupling is made. The Specification as open to inspection under Sect. 91 also describes a locking member adjustable in a radial direction, and a locking member comprising a resilient piston with conical head. This subject-matter does not appear in the Specification as accepted.
Patent GB-841332-A (GB)
Title: Constant support device
Inventor: SUOZZO LEONARD SALVATORE
IPC: F16L3/205
Filed: 1958-04-08
Abstract: 841,332. Springs. BERGEN PIPESUPPORT CORPORATION. April 8, 1958, No. 11059/58. Class 108(3). The spring of a constant-force pipe-support comprises pairs of dished discs 75, Fig. 1. The pipe to be supported is connected to a rod 96. The spring is connected to the rod 96 by a rod 61, which passes through circular holes in discs 75, a lever 40, pivoted at 39, and lever arms 85 connected to the lever 40 by a pin 87, Fig. 2 and pivoted at 86 to plates 32. Pins 99 attached to arms 85 move in grooves 33 and limit the movement of arms 85. The force of the spring and the distance through which the spring is compressed can be adjusted by placing a pivot pin 39 through the appropriate one of holes 42, Fig. 5, in the lever 40, and placing the pin 87 through the appropriate hole 43. A screw 49 adjusts the vertical position of a pin 60, attached to the bifurcated end 62 of rod 61, in slot 44. The disc springs are precompressed 'by turning nut 67, Fig. 1, so that they work over the linear part of their load displacement curve. Spaces 77 may be eliminated by shaping the edges of the disc springs as shown at 103, Fig. 4. Fig. 6 shows an embodiment in which two groups of disc springs are housed in a tubular support 105, the connection to the supported pipe and associated levers being between the groups of springs. The springs work in unison and are connected by member 127. Fig. 10 shows an embodiment in which the springs are disposed within a tubular housing the axis of which is vertical. The point of attachment 143 of the support to the supporting structure is vertically above the point of attachment 161 of the pipe to the support. The pipe supporting rod may be attached directly to the lower end of rod 61 without' the intervention of lever arms 148. Fig. 13 shows an embodiment in which the load is supported from below by yoke 178 and lever arms 176, the spring units being housed in tubular member 165.
Patent GB-725468-A (GB)
Title: Improvements in or relating to a thermoplastic copolymer
IPC: C09D133/06
Filed: 1953-04-22
Abstract: Thermoplastic copolymers which are converted to thermoset products by heating above 135 DEG  C. are made by the copolymerization of (a) from 5 to 15 molar per cent of tert.-butyl or tert.-amyl acrylate or methacrylate, (b) from 5 to 15 molar per cent of glycidyl acrylate or methacrylate, and (c) from 70 to 90 molar per cent of at least one non-tertiary alkyl ester of acrylic or methacrylic acid in which the alkyl group contains from 1 to 18 carbon atoms, such as methyl, ethyl, propyl, n-butyl, sec.-butyl, n-amyl, sec.-amyl, 2-ethyl hexyl, n-octyl, isooctyl, lauryl, n-octadecyl, and sec.-octadecyl acrylates and methacrylates; also present in small amounts as copolymerizable monomers may be styrene, acrylonitrile, vinyl acetate, and vinyl formal. Polymerization may be carried out in bulk or solution in solvents such as carbon tetrachloride, perchloroethylene, toluene, xylene, or "Cellosolve" (Registered Trade Mark) acetate, and either at low temperatures under the influence of ultra-violet light and an activator such as benzoin, or at elevated temperature in the presence of free radical catalysts such as benzoyl, acetyl, benzoyl acetyl, lauroyl, succinyl, stearoyl, caprylyl, and di-tert.-butyl peroxides, cumene and tert.-butyl hydroperoxides, tert.-butyl perbenzoate, and ascaridol.  The copolymers are used to produce coatings which are rendered solvent and scratch resistant by heating at temperatures between 135 DEG  and 200 DEG  C.
Patent GB-1045206-A (GB)
Title: Improvements in devices for loading laundry machines
Inventor: KIRKBY CHRISTOPHER ARMSTRONG
IPC: D06F95/00
Filed: 1964-03-17
Abstract: 1,045,206. Endless conveyers. ISAAC BRAITHWAITE & SON ENGINEERING Ltd. June 17, 1965 [March 17, 1964], No. 11127/64. Heading B8A. [Also in Division F4] A device for loading a laundry machine comprises an open-topped, trough-shaped container 2 with an open front end 4 and a rear end formed by a plate 6. The base of the container is formed by the upper run of a driven endless belt conveyer 40 supported by rollers 56 and a plate 58. The container 2 is mounted. on supports 18 pivoted at 40 and 20 and its inclination is controlled by the extension of a piston-rod 30 from a cylinder 32 pivoted at 28 and 34 respectively. Work deposited into the container 2 at the rear end 6 is carried towards the open end 4 for discharge into a laundry machine 64, Figs. 3 to 5 (not shown), the inclination of the container 2 being suitably adjusted.
Patent GB-625316-A (GB)
Title: Improvements in stretching machines for flattening metal strips
IPC: B21D25/00
Filed: 1947-04-28
Abstract: 625,316. Stretching. BIGWOOD & SON, Ltd., J., and PICTON, J. B. April 28, 1947, No. 11259. [Class 83 (iv)] Winding and unwinding.-Relates to machines for stretching strip or sheet metal of the kind described in Specification 601,407, and consists in fitting in the gap between the stretching heads 31, 36 transverse ways 12 extending to each side of the bed 10 and mounting an auxiliary unit 26 on one side and a recoiling unit 27 on the other side, each unit in turn being traversable into line with the bed 10. The coiling units are similar to those described in Specification 570,260. The gripping head 35 is hydraulically operated and the adjustable head 31 is anchored by a hook 32 engaging a rack 33 in the bed, and carries a drum 34 round which the strip passes, both ends being held in the grippers at 35. Alternatively the head 31 may carry grippers. The transverse ways 12 are of channel section with additional flanges 16 between which and top strips 29 the coiling units are guided, each unit having a rack engaging a pinion 19 in the bed driven by reduction gearing from a motor 23, one for each unit.
Patent GB-966163-A (GB)
Title: Improvements in electrically operated stopper guides for ladles
IPC: B22D41/20
Filed: 1963-03-21
Abstract: 966,163. Foundry ladles. BOCHUMER VEREIN FUR GUSSTAHLFABRIKATION A.G. March 21, 1963 [March 22, 1962], No. 11261/63. Heading F4B. An electrically-operated device 4 for controlling the flow of molten metals into degasifying vacuum vessels such as ladles has electrical means energized from a low voltage source for moving longitudinally in either direction a spindle 5 which extends through the device, means being provided to lock the spindle when the electrical means is not energized, said spindle being coupled at one end to a linkage 2 which operates a stopper to control the flow of metal. The adjusting device 4 and the linkage 2 are fixed to a ladle wall 1. The linkage 2 is coupled to the spindle 5 through a rigid fork 3, a bracket 6 and a releasable pin 7. In an alternative coupling arrangement, Fig. 2 (not shown), a double arm lever 8 pivoted at 9 near its centre is provided between the linkage 2 and the spindle 5. The adjusting device, Fig. 3, includes a stator core 14 and a rotor 13, the latter being fixed to an internally screwthreaded sleeve 12 which co-operates with a screw-threaded portion of the spindle 5. A key 29 can slide in a longitudinal groove 30 in the spindle to prevent co-rotation of the latter. A disc 21 rotates with the sleeve 12 being coupled thereto by member 22. The device housing 15 is connected to a guide cap 17 and a bearing cover 16, the latter being secured to a stationary disc 23 by nut 24. A rubber washer 25 and an axial thrust bearing 27 are provided between the two discs 21 and 23.
Patent GB-239571-A (GB)
Title: Improvements in alternating current electric machinery
IPC: H02K19/02
Filed: 1924-05-08
Abstract: 239,571. Creedy, F. May 8, 1924. Alternating-current commutator machines; exciting; rotary converters and transformers.- Synchronous or asynchronous internal cascade machines having a single cascade secondary winding are provided with an auxiliary commutator winding on the secondary member with brushgear adapted to produce E.M.F.'s of primary or slip frequencies. In a self-synchronizing motor, Fig. 1, the auxiliary commutator winding B is separate from the permanently short-circuited cascade secondary A, the commutator E being connected into the star-points of the primary parallels C, D. The positive and negative brushes F are relatively adjustable, and starting resistances may be inserted, or the circuits opened at starting. The commutator is designed for brush adjustment to regulate the continous-current excitation after synchronism has been reached. A polyphase arrangement of brushes may be provided and the machine may function asynchronously with inherent power factor regulation. The commutator itself may be made the star-point of the primary winding with a nine-phase arrangement of brushes, Fig. 4, as in such cases the primary currents balance at the commutator, as indicated by the arrows, and produce no field excitation for the auxiliary commutator winding. Winding connections for pole ratios of 2 : 1 and 3 : 1 are described. In another arrangement for speed and power factor regulation, two primary windings of different pole number are provided, one connected to line and the other across brushes of different sets which may be adjusted to give voltages of variable phase and magnitude from the auxiliary commutator winding. The auxiliary commutator winding may be connected into the star-point of a star-mesh cascade secondary winding, the phase rotation of currents through the tappings being arranged to produce currents of slip or primary frequencies at the brushes. Machines with the auxiliary commutator winding inserted into the secondary winding may be compounded, and may function as synchronous motor generators and converters. The volts on the commutator may be reduced by inserting intermediate segments between those connected to each coil, or the coils may be star-connected to the segments. Economy in copper may be obtained in known manner when inserting the extra turns into the star-mesh secondary. Specification 175,306 is referred to.
Patent GB-591259-A (GB)
Title: Improvements in lapping devices
IPC: B24B53/04
Filed: 1945-05-04
Abstract: 591,259. Dressing conical lapping tools. ROBINS, S. J. May 4, 1945, No. 11413. Convention date, June 22, 1944. [Class 60] A lapping attachment for a machine tool, e.g. a drilling-machine, includes a base block 1 with a dead centre pin 4 arranged under a lapping-tool 8, for producing female centres in the work pieces, carried in the normal drill socket 6. In a groove 10 in the block, parallel to the conical face 9 of the stone 8, a rack 11 is reciprocated by a pinion 14 so that a diamond tool 13 mounted on a bolt 12 attached to the rack moves across the face 9.
Patent GB-717197-A (GB)
Title: Improvements in and relating to cases for electrical apparatus
Inventor: MARTIN GUY CHRISTIAN
IPC: H02B1/28
Filed: 1952-05-06
Abstract: 717,197. Indicating-apparatus. ENGLISH ELECTRIC CO., Ltd. May 1, 1953 [May 6,1952], No. 11413/52. Class 106 (4) An instrument casing comprises, Fig .  1, an inner tube 6 (e.g. of metal) extending within an outer tubular casing 1 (e.g. of moulded material) and between a window disc 4 and back plate 8 which close the casing 1. The window disc 4 bears against an internal flange at 2 and the' tube 6 is provided with conical end surfaces and a circlip 9 urges inwardly the back plate 8 to compress sealing rings 14, 15 between the conical end surfaces and the disc 4 and back plate 8 respectively and against the wall of the casing 1. The dimensions of the sealing rings 14, 15 and the angle of the conical surfaces of the tube 6 are preferably so chosen that the ends of the tube 6 contact disc 4 and plate 8 before excessive distortion of the rings 14, 15 has taken place. In Fig. 1 the sealing ring 14 for window 4 comprises two rings joined by an annular web 13 and the sealing for back plate 8 may be similar as shown in Fig. 2 or comprise a single ring 15 with an annular web 16 as indicated in Fig. 1. If desired seating rings without webs may be used In Figs 2 and 3 lugs 19 distributed around the casing 1 press the circlip 9 against the back plate 8 and sealing ring 17. The instrument to be enclosed by casing 1 may be and normally is, mounted on the back plate 8. Lugs 12 may be provided so that the casing may be mounted on a panel as described in Specification 714,686.
Patent GB-1461043-A (GB)
Title: Thermionic emitters
IPC: H01J1/144
Filed: 1975-03-19
Abstract: 1461043 Thermionic cathode materials CANADIAN PATENTS & DEVELOPMENT Ltd 19 March 1975 [8 April 1974] 11476/75 Heading H1D A thermionic cathode is formed of where 0À4#x#0À01. The material is prepared by firing La and Sr oxylates with V 2 O 5  first at 600 C. in H 2  and A then at 1300 C. in A and H 2 ; forming pellets and refiring at 1700 to 2100 C. in A and H 2 . A directly heated cathode is in the form of a hairpin; alternatively a block of the material is held between spring loaded members of Ta, W or Mo. The cathode is used in a scanning electron microscope and is operated at 1200-1500 C. The inclusion of Sr reduces the resistivity and causes the resistance to increase with temperature.
Patent GB-114844-A (GB)
IPC: G10K13/00
Abstract: 114,844. Fritzsch, B. June 5, 1916, [Convention date]. Sound magnifying and dirccting appliances. - The enclosed horn of a talking-machine is formed with double walls of thin resonant wood, the outer wall being perforated, while the resonating chamber formed between the walls does not communicate with the sound-inlet tube. The tone-arm 12 opens into an elbow tube 14 secured to the backplate 4 of the casing. The horn, which may be of square or other section, has double walls 18, 19, the space 20 between them being closed by a plate 21 at the inlet end, and open at apertures 25 along the horn and at perforations 26 at the front of the machine. The inner wall is strengthened by transverse ribs 24. The resonating chamber 20 may be divided by diagonal plates at each angle of the horn.
Patent GB-114865-A (GB)
IPC: F16H3/66
Abstract: 114,865. Collier, A. T. March 16, 1917. Variable-speed and reversing gearing. - In a change-speed gear for motor-vehicles &c., in which trains of bevel epicyclic gearing are arranged in series, planet-wheel carriers 14, 34 are secured respectively upon shafts 15, 35 coaxial with the driving-shaft A. Planet pinions 12 mounted on the carrier 14 mesh with a gear 10 on the shaft A and with a gear 11 mounted loosely on the shaft 15. Planet pinions 32 on the carrier 34 mesh with a gear 30 secured to the shaft 15 and with a gear 31 secured to a sleeve 36. The gears 11, 31 anl the carrier 34 can be held against rotation by projections on one or more sliding rods 100. A clutch member 21 operated by a sliding rod 80 enables the carrier 14 to be clutched to the wheel 10 or to the wheel 11, and a clutch member 40, also operated by the rod 80, enables the carrier 34 to be clutched to the wheel 31. A sliding clutch member 58 allows the driven shaft B to be clutched either to the shaft 35 or to a reverse-drive sleeve 55 driven from the sleeve 36 by reducing-gearing 50, 51, 53, 54. With the parts in the positions shown, neither the shaft 35 nor the sleeve 36 is driven. To drive the shaft 35 at top speed, the rod 80 is moved to the right, thereby locking the carriers 14, 34 to the wheels 11, 31 and causing both epicyclic trains to drive solid. To drive the shaft 35 at half-speed, the rod 80 is moved to the left to lock the carrier to the wheel 10 and the rod 100 is moved to the left sufficiently to lock the wheel 31 against rotation. The shaft 35 is driven at quarter-speed by leaving the rod 80 in the position shown and moving the rod 100 fully to the left, so as to lock the wheels 11, 31 against rotation. The sleeve 36 is driven at half-speed in the reverse direction by moving the rod 100 to the right and thereby locking the wheel 11 and the carrier 34. The rcd or rods 100 may be yieldingly supported by stiff springs, and may be provided with spring- supported brake blocks engaging annular brake surfaces adapted to bring the parts 11, 31, 34 gradually to rest. The gearing may be modified so as to employ more than two bevel epicyclic trains in series. If a reverse drive is not required, the clutch 58 is omitted, and the shaft 35 is connected directly to the shaft B.
Patent GB-966767-A (GB)
Title: Improvements in or relating to an hydraulically operated ships'hatch cover
IPC: B63B19/197
Filed: 1961-03-29
Abstract: 966,767. Hatch covers. BERGENS MEKANISKE VERKSTEDER A.S. March 29, 1961 [March 29, 1960 (2)], No. 11493/61. Heading B7S. [Also in Division E2] A hatch cover comprises four sections hinged together in pairs, the sections 11 being hinged to the coaming by means of hydraulic motors 28 of the oscillating vane type (see Division E2) which operate the cover and the sections 12 having guide members 16 pivotally mounted on pins 20 and supporting rollers 18, 19 which rest on the coaming. The guide members each include a locking rod 21 which falls under gravity into a recess 24 in a sloping member 29 when the cover reaches its open position. The rod can be manually retracted by means of a pin 22 which may be inserted into a branch 25 of an L-shaped slot 23 to hold the rod out of engagement with the recess 24 when the cover is to be closed.
Patent GB-580209-A (GB)
Title: Improvements in the manufacture of high wet-strength paper
IPC: D21H25/06
Filed: 1944-06-16
Abstract: 580,209. Paper containing synthetic resin. ANDERSON, H. E. June 16, 1944, No. 11553. [Class 96] Paper is made to have high wet strength by impregnation, in the paper-making machine, or after manufacture and re-introducing it into the machine beyond the second wet press, with a solution of resin-forming constituents, e.g., of urea- or phenolformaldehyde, e.g., as in Specification 553,122 and drying; it is then heated and the resin cured as by passing the web P about pipes 11, 12 at 120 to 130‹C. and into a chamber 10 heated to 130‹C. by electric resistance mats, or the web may be wound between an inner and outer electrode and interleaved at intervals with metallic foil for heating diathermically.