baber/WOPTO huggingface dataset:
Patent GB-681810-A (GB)
Title: Improvements in or relating to crystal triodes
Inventor: WHITE CHARLES DE BOISMAISON
IPC: H01L27/07
Filed: 1949-04-01
Abstract: 681,810. Semi-conductor amplifiers. STANDARD TELEPHONES & CABLES, Ltd. March 10, 1950 [April 1, 1949], No. 8906/49. Class 40 (iv). [Also in Group XL (c)] An electric amplifying device comprises a semiconductor body having two surface contacts spaced apart by less than the critical distance necessary to ensure that current carriers from the emitter are collected by the collector, and a cat's-whisker electrode in contact with the body at a distance from either of the said contacts greater than this critical distance. Fig. 1 shows an amplifier circuit in which a semi-conductor body 1 is provided with an emitter 3 and collector 4, which are separated by a small distance such as 0.001 inch. An additional point contact 5 is provided spaced at a greater distance, such as 0.015 inch, from the other electrodes, and which serves as the common connection for the input and output circuits and thus corresponds in function to that of the base electrode in previous transistor circuits. An additional low resistance contact 2 may also be provided on the base of the semiconductor body. An alternative arrangement is described in which the emitter and collector electrodes are on opposite sides of a thin disc, and the third connection is provided by a point contact situated on the edge of the disc. The disc is housed in a hollow tube. The invention results in improved amplification which may be due to the introduction of positive feedback by the additional point contact. Reference is made to Specification 681,809, and the Provisional Specification refers to Specification 681,829.
Patent GB-231882-A (GB)
Title: Improvements in or relating to internal combustion engines
IPC: F02B25/00
Filed: 1925-04-03
Abstract: 231,882. Dutel, E., and Perdonicini, J. M. April 7, 1924, [Convention date]. Spray carburettors. - In a two-stroke-cycle engine, the closed crank case E is provided with a suction-actuated air inlet valve 8 and is connected to the cylinder inlet port 2 by a passage 9 containing a fuel nozzle 11, the pressure in the crank case E being transmitted to the fuel' tank 16 and to the float chamber 13 by pipes 17, 17<1>. The fuel flow from the nozzle is controlled by a needle valve 18, and the mixture is controlled by a rotatable throttle 10.
Patent GB-1196721-A (GB)
Title: Piperazine Derivatives
Inventor: LEIGH THOMAS
IPC: C07D241/04
Filed: 1968-02-23
Abstract: 1,196,721. Antidepressant &c. compositions. IMPERIAL CHEMICAL INDUSTRIES Ltd. 7 Feb., .1969 [23 Feb., 1968], No. 8918/68. Heading A5B. [Also in Divisian C2] Pharmaceutical compositions comprise a compound I in which R 1  is H or alkyl and X is aryl optionally substituted by one or more of halo, alkyl, alkoxy, alkylthio, acyl, hydroxyalkyl, alkoxyalkyl. alkenyl, alkenyloxy, aryl, aryloxy, aralkoxy, acylamino, alkoxycambonyl, hydroxy, amino, carboxy, methylenedioxy or alkylene, or an acid addition salt trhereof together with a suitable carrier or diluent for oral or parenteral administration and optionally neuroleptic agents, sedatives, tranquillisers, anticonvulsant drugs, anti-Parkinsonian drugs, and/or antidepressants, examples of which are given. The compounds I are active as antidepressants.
Patent GB-757422-A (GB)
Title: Improvements in or relating to speed-responsive electric switches
Inventor: TOWNDROW PERCY EDWIN
IPC: H01H35/10
Filed: 1954-03-26
Abstract: 757,422. Centrifugal switches; magnetic switches. SMITH & SONS (ENGLAND), Ltd., S. April 1, 1955 [March 26, 1954], No. 8985/54. Class 38(5) In a speed-responsive switch a ferromagnetic body 9.is pivotably mounted at 8 on a rotating shaft 3 so that when stationary one end of the body comes under the influence of a permanent magnet 11 carried by the shaft and an adjustable contact 14 at the other end engages a co-operating contact 18. As the speed increases centrifugal forces overcome the magnetic attraction and the body is displaced to the position shown by the broken lines thereby opening the contacts. This displacement is limited by the adjustable stop 12. The body carries a secondary contact 15 which co-operates with a contact 19 connected to the contact 18 by a spring blade. The contact 18 is mounted on an insulating block 17 fixed to the shaft and current is introduced via a connection 20, a spring-urged brush 21 engaging a conducting disc 22 mounted on an insulated disc 23 in the casing, and a conductor 24 connected to the disc 22..The return is to earth through the shaft and bearing to the casing. The switch is particularly intended for use in motor vehicles.
Patent GB-1455858-A (GB)
Title: Digital display indicator
IPC: G04B19/21
Filed: 1974-02-28
Abstract: 1455858 Digital clocks GENERAL ELECTRIC CO 28 Feb 1974 [8 March 1973] 9062/74 Heading G3T [Also in Division G4] In a digital display device, e.g. a clock, having a rotary indicator such as minutes drum 38 carrying a sequence of numerals and attached to a ratchet wheel 56 which co-operates with a spring-loaded pawl 90 to hold the drum in its sequential display positions, the drum is driven by a finger 74 on a member 76 which revolves on a shaft 78 spaced from the wheel 56, the finger also acting on the pawl 90 to lift it away from the ratchet wheel while the finger engages one of the wheel teeth to advance the drum, and then releasing the pawl which engages the next tooth of the ratchet wheel. This is stated to reduce noise and driving torque. As shown in Fig. 8 the finger 74 is in engagement with a surface 108 of the pawl and is about to rotate the latter anti-clockwise against spring 102 to free notch 92 of the pawl from tooth 66 which is then drivingly engaged by the finger. A further surface 110 of the pawl ensures its gradual release. The clock is driven by a synchronous motor (8), Fig. 2 (not shown) and is generally as in Specification 145-5859.
Patent GB-1046324-A (GB)
Title: Time switch mechanism
IPC: G04F3/06
Filed: 1964-03-04
Abstract: 1,046,324. Switches held set and freed mechanically. MALLORY BATTERIES Ltd. (P. R. Mallory & Co. Inc.). March 4, 1964], No. 9085/64. Heading H2B. A switch wherein contacts are latched in closed condition upon depression of a knob and opened by a time-driven cam after a preset time interval, has the time interval selected by rotation of the said knob, the setting remaining effective for successive actuations until it is manually altered. A synchronous motor 11 is mounted on a back-plate 10 to drive a pinion 17 through reduction gearing, and a mating gear 28 together with cam 36 and spring clutch 30 are loosely carried on a shaft 48 which has a locator member 41 secured thereon for rotation by a knob 57. A spring 37 acts between cam 36 and locator 41. Insulating side plates 61 and 62 carry fixed contacts 66, 67 and moving contacts 73, 74 on spring blades 68, 69 and 75, 76, respectively. Blades 75, 76 are biased to the contacts-open condition and their ends 79, 80 normally rest on steps 85, 87 of a block 20 mounted on back-plate 10 by spring arm 21. A time interval is set by rotating knob 57 and hence locator 41. On depression of knob 57 against spring 53 the gear 28 is moved out of mesh with pinion 17 and spring 37 immediately rotates cam 36 back to a starting position determined by a projection 84 engaging locator 41. The movement of cam 36 rearwards also causes it to act on lugs 77, 78 on the moving contact blades and their ends 79, 80 are moved on to steps 86, 88 of block 20, thus latching the contacts in closed condition. One contact is used to energize the motor 11 and when knob 57 is released the gear 28 meshes with pinion 17 and cam 36 is slowly rotated. After the preset time interval projections 92, 93 on cam 36 act on the part 89 of block 20 thus allowing the contacts to open. A larger number of contacts may be provided and the precise opening times are determined by suitable dimensions of projections such as 92, 93 and corresponding differences in the depths of steps on block 20.
Patent GB-228746-A (GB)
Title: Improvements in hydraulic power transmission
IPC: F16H61/40
Filed: 1924-04-10
Abstract: 228,746. Braren, L. K., and Vag�, P. von. April 10, 1924. Regulating delivery by opening by-passes and suction valves.-In hydraulic power transmission apparatus comprising a pump and motor, the reciprocating or rotary pump is provided with means for by-passing a variable quantity of the liquid delivered during each rotation or reciprocation. Devices for the equalization of flow, relief of pressure, and for controlling the speed in accordance with the load on the motor may also be provided. In the form shown in Figs. 1 and 2 the piston 3 of a single-cylinder pump is provided with recesses 7, 8 co-operating with conduits 9, 10, and the quantity by-passed is varied by a rotary adjustment of the piston. A spring- controlled piston 27 equalizes the flow, the direction of rotation of the driven shaft 21 is controlled by a reversing valve 16, and leakage is replenished through a non-return valve 26. In a form employing a multi-cylinder pump, the pump cylinders 47, 48, Fig. 6, are connected by a series of narrow parallel slots 69, 70 to a cylinder containing a piston 53, Fig. 9. The piston 53 is adjusted axially to vary the quantity by-passed, and is rotated so that its other end may form a reversing valve, the operating handle working in a slot which is so shaped that reversing may only be effected when the quantity by-passed is a maximum. The flow is equalized by a spring- controlled piston 82, and the pressure and suction sides of the system communicate through a recess 87 when predetermined pressure is attained. In another form, the output of a pump with oscillating cylinders passes to a chamber 130, Fig. 13, connected to the motor through a non-return valve 131, so that the quantity of liquid delivered to the motor increases with decreasing load, and an eccentric 135 on the pump shaft operates through a member 136 and pins on a spider 137 to lift by-pass valves 134, means being provided to adjust the length of the member 136 so as to vary the quantity by-passed. A leakage replenishing pump 140 is provided.
Patent GB-259838-A (GB)
Title: Improvements in valve gear
IPC: F02D13/02
Filed: 1926-04-07
Abstract: 259,838. Nixon, B. L. April 7, 1926, Inertia governors.-In a releasing valve-gear for operating lift or oscillating admission or exhaust or both separate admission and exhaust valves, the valve 21 is connected to a lever 19 fixed on a pivot pin 14 which lever carries a roller to engage an actuating-cam. An inertia governor is provided to open the closed admission valves under heavy overloads. A sleeve 40 with a flange 41 is fixed on the cam shaft 11 and has fixed thereon a drum 42 and has loosely mounted thereon a flywheel 43 carrying a pin 45 connected by a spring 46 to the drum. A bell-crank 48 is pivoted on the flange 41 and has a pin-and-slot connection 49 with the flywheel, and an arm carries a pin 50 which extends through a slot 51 in the flange 41 to the other side thereof. The pin carries a curved arm 52 which constitutes a path for a roller 53 on an arm 54 fixed on the pin 14. When the shaft 11 decreases in speed, the flywheel effects a movement of the lever 19 and thereby the opening of the admission valve.
Patent GB-815081-A (GB)
Title: Method of ore treatment
IPC: C22B60/02
Filed: 1943-06-07
Abstract: Uranyl nitrate is obtained from uranium containing ore by adding nitric acid to the powdered ore, evaporating to dryness, and extracting with ether.  The ether is agitated with a small amount of water to separate impurities.  A further quantity of water is added to dissolve the uranyl nitrate and the ether is recovered.
Patent GB-266554-A (GB)
Title: Improvements in or relating to elastic shock absorbing mechanism
IPC: B60G13/04
Filed: 1926-04-07
Abstract: 266,554. Holmes, G. E. April 7, 1926. Arrangements of springs with mountings complete in themselves.-An elastic device to be connected to two relatively movable elements comprises two toothed racks 3, 4 slidable longitudinally relatively to one another and having between them a pinion 12 or lever connected to springs 7 which engage the racks at the sides of the teeth so that rotation of the pinion is resisted by the springs. The rack 3 is rigidly connected with two other members 1, 1 by the shell of the casing and these three members alternate with the rack 4 and with two other members 2, 2, the rack 4 and members 2, 2 being connected by an end piece 10. Balls may be interposed between the several parts to facilitate the sliding movement. Solid or tubular relatively movable elements may be connected to the end piece 10 and to the end 11 of the casing. When tubular elements are employed a shaft may be passed right through, a substantially larger hole 6 being formed in the pinion 12. Or fluids may be passed through the tubes and the apparatus, a stuffing-box then being provided between the casing and the tube connected to the end piece 10.
Patent GB-700094-A (GB)
Title: Improvements in or relating to the preparation of quaternary amines
IPC: C07D487/18
Filed: 1950-04-14
Abstract: Quaternary amines are made by reacting a lactone of formula <FORM:0700094/IV(b)/1> wherein R is H or an alkyl radicle of one to four carbon atoms, in the liquid phase with a tertiary amine in which 3 carbon atoms are attached to each trivalent amine nitrogen atom. Reaction is preferably effected in organic solvents many of which are specified from amongst hydrocarbons, chlorinated hydrocarbons, ethers, esters, nitriles, ketones and alcohols, especially tertiary alcohols.  Reaction also takes place in water or in the absence of solvents.  Amines which have 4-12 carbon atoms and in which each amine nitrogen is connected by each of its 3 valencies to a methylene group are preferred.  Many amines are specified representative being triethylamine, N, N1-tetraethyl ethylene diamine, methyl diethanolamine, dimethylamino propionic acid, N-diethyl anthranilic acid, tribenzylamine, N-ethyl piperidine, triphenylamine, dimethyl-m-aminophenol, diethyl-aniline-m-sulphonic acid, 1, 2-diethyl glyoxime, p-diethylamino benzaldehyde, methylethylallylamine and mercuri-p-diethyl-aminophenyl acetate.  The amines may contain other substituents such as halogen atoms and nitro-mercapto- and carboxy groups.  b -propiolactone is the preferred lactone representative of others specified being b -valero-, a -ethyl-b -propio-, and b -isopropyl-b -propiolactones. Temperature of reaction is preferably 30-100 DEG C., e.g. 0-50 DEG C. and equimolar proportions of reactants or an excess of amine are used.  Preferably the amine is added to the lactone over a period of 1/2 to 5 hours.  In examples, b -propiolactone is reacted in acetonitrile with (1) trimethyl-, (2) triethanol-, (3) methyl diethanol- and (4) hexamethylenetriamines to give respectively b -(dimethylamino)-propionic acid methyl betaine, b -[(di-2-hydroxyethyl)amino]-propionic acid-2-hydroxyethyl betaine, b -[(di-2-hydroxyethyl)amino]-propionic acid methyl betaine and N-(2-carboxyethyl)-hexamethylene tetrammonium hydroxide and in (5) the acetonitrile of (1) is replaced by water the product being the same.  Specification 649,028 is referred to.
Patent GB-590256-A (GB)
Title: Improvements relating to apparatus for dispensing oil or other liquids
IPC: F16N37/00
Filed: 1945-04-13
Abstract: 590,256. Dispensing liquids. LOWE, A. M. April 13, 1945, No. 9235. [Class 116] Dispensing-apparatus for liquids, particularly lubricating oils, comprises a cabinet having one or more compartments each having a removable container and a door apd means whereby the container is automatically filled with liquid when placed in the compartment and when the door is closed. As described each compartment has a space 5 for a container 1, a sliding door 4, with a handle 12 and transparent window 10, that can be raised and pulled down in front of the space 5, the raising and lowering of the door operating by levers 24, 23, 20, a three way valve 3 disposed below a filling vessel 6 of the same capacity as the container 1. A rack 14 and spring controlled detent 14 prevent the door being closed until it has been fully opened, and vice versa. When the door is open an electrical contact (not shown) is made, causing oil to be pumped from a reservoir to the vessel 6 via pipe 18 and valve 3, excess oil spilling over at 9 and being returned to the reservoir. On closing the door the contact 1 is broken, the valve 3 closed between the pipe 18 and vessel 6 and opened between the vessel 6 and delivery nozzle 2 thus filling the container 1, which may be removed on opening the door which again closes the electrical contact to fill the vessel 6 in readiness for the next operation. Instead of the three way cock 3 a two way cock may be used for dispensing and a separate cock 29, in a feed pipe 28 disposed above the vessel 6 and operated by additional levers 30, 31, for filling the vessel 6. Different compartments may be connected to different reservoirs with independent pumps, or a common pump may feed any number of compartments in the cabinet. The vessel 6 may be emptied by compressed air &c. if desired instead of gravity flow. Specification 500,744 is referred to.
Patent GB-779088-A (GB)
Title: Improvements in or relating to evaporators
Inventor: HILLIER HAROLD
IPC: B01D1/26
Filed: 1954-03-30
Abstract: <PICT:0779088/III/1> In an evaporator comprising a shell having internal heating coils, such as is used for producing distilled water from sea or estuarine water, an overflow weir for withdrawing brine from the evaporator is arranged in an opening in the side wall of the evaporator at a level such that the sill of the weir is flush with the highest point of the heating coils.  The brine flows over the weir into a collecting chamber; and the opening in the side of the evaporator is sufficiently large to ensure that there is free communication between the vapour space of the chamber and that of the evaporator.  The device may be incorporated in each evaporator of a multipleeffect apparatus as shown.  Raw water is introduced through inlet 11a into the shell of first evaporator 1a; and heating steam is supplied to coils 4a through pipe 5a. Brine leaves evaporator 1a by flowing over weir-plate 13a which is fitted to opening 14a in the shell of the evaporator.  The brine enters chamber 15a, and then flows to evaporator 1b via pipe 16a and orificeplate 25a. Evaporators 1b and 1c are similar to the first evaporator.  The brine from evaporator 1c overflows into chamber 15c, and is discharged to waste via pump 17a.  Diluting water to assist the brine pump to operate satisfactorily with a small suction head is drawn in through pipe 19a.  Vapour formed in evaporator 1c leaves through pipe 23c and is condensed to give the distilled water product.  Orificeplates 25a and 25b may be arranged to be rather smaller than is necessary for maximum output, and part of the flow then passes through by-pass lines 26a and 26b.  Valves 27a and 27b are adjusted so that there is a free brine level in chamber 15a and in chamber 15b.
Patent GB-214439-A (GB)
Title: Tedding attachment for mowing machines
IPC: A01D43/02
Filed: 1923-04-05
Abstract: 214,439. James, R. P. April 5, 1923. Mowing-machines; haymaking.-To spread the swath formed by the swath board of a mowing machine a bedding device is adapted to operate outside the ground wheel remote from the cutting apparatus and to distribute the grass inwards behind the said wheel. The bedding device a, consisting of a number of radial steel rods each of which preferably is formed with a coil e, is mounted on the rear end of a spindle d, driven through bevel gearing from an extension g on the outer side of the hub of the ground wheel c. A clutch h controls the operation of the device. To enable the device to be raised and lowered, one end of the spindle d is mounted in a bracket i that is free to turn round the extension g and its other end is carried in a bearing l secured to a bar k attached to supports j pivoted on the axle. The bar k is supported, when the bedding device is in operation, on a trailing wheel m. Specification 9796/86 is referred to.
Patent GB-250019-A (GB)
Title: Improvements relating to alcohol fuels
IPC: C10L1/02
Filed: 1925-04-08
Abstract: 250,019. Sarigny, R. de. April 8, 1925. Motor spirit consists of approximately 50 pints of alcohol, 12 pints of benzol, 34 pints of petrol, 3 pints of ether, and 1 pint of a denaturant, e.g. a mixture of “ pint of pyridine with ¥ pint of mineral oil.
Patent GB-875236-A (GB)
Title: A movable hutch means in combined writing and type writing desks
IPC: A47B17/03
Filed: 1959-03-18
Abstract: 875,236. Furniture combinations, cabinets. JANSSON, C. M. March 18, 1959 [March 24, 1958], No. 9377/59, Classes 52(1) and 52(3). A combined writing desk and typewriting desk comprising a writing desk portion 10 and a typewriting desk portion 11 disposed at an angle to each other has a rack 13 slidably suspended beneath portion 10 to house stationery &c. In a modification Fig. 3 rack 13 moves into the position occupied by a fixed rack 12 in Fig. 1 and a drawer 15 is provided.
Patent GB-1037793-A (GB)
Title: Improvements relating to suction cleaners
IPC: A47L5/30
Filed: 1964-03-05
Abstract: 1,037,793. Suction cleaners. HOOVER Ltd. March 5, 1964 [March 8, 1963], No. 9418/64. Heading A4F. A suction cleaner comprises two hollow open bottomed arms 13, 14, projecting back from opposite sides of a suction nozzle 12 (Fig. 1, not shown) to the end of which is pivoted an elongated housing 40 (Fig. 1, not shown). The housing slopes up and back from the nozzle body being pivotally attached to it (Fig. 3, not shown) by projecting bearing members 56, 58 which seat in downwardly opening slots 65, 73 respectively in the inner walls of the hollow arms 13, 14 and are secured thereto by screws 67, 71 accessible from the open undersides of the hollow arms 13, 14. The housing 40 includes an upper portion containing a fitted bag 47 (Fig. 1, not shown) connected to the nozzle 12 by a hose 48 which extends through the hollow arm 14 to an adapter 50, and a lower portion containing the fan 53 and motor 54. The armature shaft 59 of the motor 54 drives an agitator 22 in the nozzle 12 through a belt and pulley drive 60, 23 in the hollow arm. 13. The housing 40 is assembled to the nozzle body from underneath.
Patent GB-883081-A (GB)
Title: Improvements in or relating to gates
Inventor: EATON GEORGE EDWARD
IPC: E06B11/02
Filed: 1960-03-17
Abstract: 883,081. Gates of variable widths. EATON BERRY Ltd. March 17, 1960, No. 9519/60. Class 45. A gate comprises two stiles, 1 and 3, each having a set of parallel tubular bars attached which telescopically engage one another, one set 5 being of equal length and the other set 7 of smaller diameter having three of one length and three of another. The maximum width of the gate is determined by a rod 9 disposed within one of the bars 5 having one end secured to the stile 1 and the other end extending into the interior of an inner bar 7 has a nut, 11, secured to it which engages the inwardly flanged end of the bar 7. Locking means for the gate comprises nuts, 8, welded to one or more of the bars 5 and wing bolts 10 which engage the inner bars 7. The ends of the bars 5 not secured to the stile are maintained correctly spaced by means of a pair of bracing members 13 welded to each bar and additional bracing is provided by the strap 14. The stile 3 is provided with a sliding fastener 15 to co-operate with one of the gate posts and the stile 1 is provided with a plurality of spaced apart holes 16 Fig. 3 (not shown), to receive a pair of eye-bolts by means of which the gate may be pivotally supported.