baber/WOPTO huggingface dataset:
Patent GB-1523275-A (GB)
Title: Digital control system for a gas turbine engine
IPC: F02C9/32
Filed: 1974-08-20
Abstract: 1523275 Automatic control of speed CAV Ltd 4 Aug 1975 [20 Aug 1974] 36549/74 Heading G3R A control system for a gas turbine engine includes a memory matrix 25 which is addressed by digital signals representing a first engine operating parameter to provide an output signal in the form of a desired value for a second engine operating parameter and this signal is compared with an actual value signal derived from a respective transducer and a control action mode to remove any error. The memory matrix 25 contains data relating to the relationship between the various engine operating parameters and also constants such as speed and temperature limits as well as control data used to calculate fuel and nozzle angle requirements. The memory is assessed by an  address selector 28 controlled by program counter 26. An auxiliary logic stage 29 is included to provide a response to switch inputs for starting, acceleration and the like and the arithmetic unit 30 carries out addition, subtraction and like operations on the supplied data.  During operation the desired data output from the memory matrix is compared with the actual value data stored in latches L2-L7 and the result is used to change the count state stored in latches L9, L10 which act on the respective controls after D/A conversion. The latches L8 and L11 form part of the computing arrangement and are used to temporarily store values. Typical ways in which the data is handled to give the control signals are explained especially when the first engine operating parameter is gas generator speed and the second parameter temperature.
Patent GB-941150-A (GB)
Title: Improvements in or relating to body-attachment life-saving buoyancy means
Inventor: BASNETT JAMES THOMAS
IPC: B63C9/125
Filed: 1961-10-11
Abstract: 941,150. Life-saving body-attachments. G. Q. PARACHUTE CO. Ltd. Oct. 1, 1962 [Oct. 11, 1961], No. 36572/61. Heading B7U. A body-attachment life-saving buoyancy means which includes an inflatable bladder 11, enclosure means 12 for the bladder closeable by a fastening means (slide or zip fastener 13) and means 14 (including a container of gas under pressure) for inflating the bladder, has release means 17 operable firstly to condition the fastening means 13 for being readily opened (Fig. 2) and secondly to cause the inflating means 14 to inflate the bladder 11, which, as it is being inflated, opens the fastening means (Fig. 4).
Patent GB-177608-A (GB)
Title: Improvements in and relating to apparatus for coating metals with metal
IPC: C23C10/34
Filed: 1920-12-31
Abstract: 177,608. British Thomson - Houston Co., Ltd., (General Electric Co.). Dec. 31, 1920. Coating.-Apparatus for coating metals by processes such as sherardizing comprises a rotatable receptacle 1 mounted on trunnions 2, 3 and having an electric heater between its inner and outer walls. A container 13 with a cover 14, locking- devices 15, and handles 16 fits tightly within the receptacle 1 and holds the charge of articles and a sherardizing-mixture, which may consist of 85 parts of zinc and 15 of zinc oxide. The cover 17 is fastened on by clamping-bars, the ends of which project through slots in lugs 20, and has ring bolts 22 for lifting. After the charge has been heated to 350‹-375‹ C. for the required time, the container is removed and another charged container may be substituted while tne receptacle is still hot.
Patent GB-1536614-A (GB)
Title: Acoustic surface wave interaction device
IPC: H01L41/00
Filed: 1977-09-02
Abstract: 1536614 Surface wave devices MURATA MFG CO Ltd 2 Sept 1977 [3 Sept 1976 18 Jan 1977] 36752/77 Heading H3U A surface wave transducer comprises a plurality of serially-connected comb arrays 30- 44, wherein the arrays having the greatest amount of finger overlap have the least number of fingers and vice versa. This arrangement decreases the total capacitance of the transducer. To suppress a spurious response the finger overlap in the outer arrays may be increased relative to the overlap required to give a desired transfer function. Thus in the transducer of Fig. 16 (not shown) having six arrays, the curve representing the Fourier transform of the transfer function is weighted by a factor 1À5 in the outermost arrays, and by 1À1 in the arrays adjacent thereto.
Patent GB-1075361-A (GB)
Title: Improvements in and relating to nuclear reactors
IPC: G21C7/18
Filed: 1965-08-27
Abstract: 1,075,361. Controlling reactors. SULZER BROS. Ltd. Aug. 27, 1965 [Sept. 10, 1964], No. 36941/65. Heading G6C. In a nuclear reactor having a number of control rods movable lengthwise into and out of the reactor core, the adjusting movement of the control rods is such that at any given time during operation some of the rods are in one end position, e.g. fully inserted into the reactor core, while some other of the rods are in the other end position, e.g. fully withdrawn, and at least one rod and at most two rods are in an intermediate position between these two end positions. The range of adjustment of the rods is subdivided into three component ranges-a central range and two end ranges- and for as long as only one rod is in an intermediate position such rod is in the central range and immediately, in the event of an adjusting movement, the rod passes over the boundary between the central range and an end range and enters the end range, a rod in the end position of the other end range is moved and, for as long as the first rod makes adjusting movements in the particular end range concerned, follows the movements of the first rod in the same direction. Consequently, there is either one rod in the central range or there are two rods in the opposite end ranges, which feature helps to compensate for the reduced sensitivity of the control in the end ranges. No division of the rods into groups for coarse and fine control is necessary since the two functions are provided by the sequentially connected control rods. Since the nuclear fuel near control rods which are completely inserted in the core all the time is used up relatively less than fuel near rods which are fully withdrawn, the position of the rods is changed periodically. After a few months or after a reactor shut down, the rod sequence can be altered so that rods which were fully inserted now stay fully withdrawn for a time and vice versa. The operating sequence and the physical arrangement of the control rods are such that each freshly inserted control rod is inserted near to the centre of the largest zone which is still devoid of rods.
Patent GB-322652-A (GB)
Title: Improvements relating to automatic telephone selector banks and selectors
IPC: H01H63/02
Filed: 1928-12-14
Abstract: 322,652. Siemens Bros. &. Co., Ltd., and Forceville, E. A. Dec. 14, 1928. Automatic exchange selectors.- In a scheme employing bare wire multipling arranged in breadth and depth, metal strips' run the whole depth of the multiple and the wipers make contact between the wires and the strips. The multiple consists of four wires a - - d, and connection is established between these wires and strips 6, 6<a>, 6<b>, 6<c>, which are notched at the end to allow commoning wires 11 to be easily fixed. The wiper carrier 8 passes between the wires and may slide in grooves cut in the insulation blocks 2.
Patent GB-959045-A (GB)
Title: Improvements in or relating to electrostatic precipitators
IPC: B03C3/68
Filed: 1961-10-16
Abstract: 959,045. Electrostatic precipitators. APRA PRECIPITATOR CORPORATION. Oct. 16. 1961 [Nov. 7, 1960], No. 36988/61. Heading B2J. In an electrostatic precipitator comprising a bank of earthed collecting electrodes 10, which may be tubular, associated with ionizing electrodes 12 supplied with high voltage from a supply 15, each ionizing electrode 12 is connected to the high voltage lead-in 25 through a fuse 24, and a condenser 22 is connected in parallel with the supply 15 through an inductance 26 and a switch 20 whereby, in the event of arcing, or short circuit, of an electrode 12 to earth, the condenser may be switched in to discharge sufficient current through such electrode to blow its associated fuse 24 and permit normal working of the other units of the electrode bank. The arrangement shown is for use where arcing occurs at voltages below normal working voltage. For short circuit faults, the condenser is connected to the supply 15 by a solenoid operated switch which isolates the electrode bank from the supply and is operable, when the condenser is charged, to connect the condenser to the electrode lead-in to discharge through the short-circuited electrode and blow the associated fuse.
Patent GB-336487-A (GB)
Title: An improved hand trolley for holding an empty sack and raising a full sack and for other purposes
IPC: B62B1/14
Filed: 1929-12-03
Abstract: 336,487. Herrmann, C. M. Dec. 3, 1929. Winch-actuated koists with guided carriers.-A hand truck provided with means for holding and raising a sack &c. comprises a carrier a having U-shaped side bars b, Fig. 6, adapted to engage the flanged side rails c of the truck and a support r for the upper end of the sack A. Ropes attached to the carrier are connected to a spindle f serving as a drum and rotatable by means of a handle i to raise the carrier. The spindle f carries a ratchet wheel k, Fig. 4, which is held against rotation to support the raised load by a pawl n pivoted to a side rail c. A trip lever m mounted on the pivot l carries a lug p by means of which the pawl can be disengaged to release the load, the lever having a roller bearing extension o which then engages the side bar band thus brakes the load.
Patent GB-449543-A (GB)
Title: Improvements in dyeing
IPC: D06P1/673
Filed: 1934-12-27
Abstract: Cellulose esters or ethers, dyeing.--Cellulose ester or ether artificial silk materials which have been delustred with titanium dioxide are coloured by treatment, in either order, with a dyestuff and a water-soluble chromium compound, the treatment with the chromium compound of materials which have been dyed with a natural dyestuff (cf. Specification 440,594) being excluded.  In an example, cellulose acetate artificial silk, which has been delustred by titanium dioxide incorporated in the mass before spinning, is treated for \ba1/2\be hour in an aqueous solution at 85 DEG  C. containing sodium bichromate and formic acid and the treated material is rinsed and dyed with a dispersion of 1 - amino - 4 - methylaminoanthraquinone; the bichromate may be replaced by chromium chloride or fluoride.  The use, as soluble chromium compounds, of potassium bichromate and chromium trioxide is also specified.
Patent GB-452766-A (GB)
Title: Improvements in or relating to the finishing of textile fabrics and yarns
Filed: 1934-12-28
Abstract: Textile fabrics are rendered crease-resistant by treating them with a solution of casein and formalin or other substance yielding formaldehyde, the strength of the solution, method, and time of treatment being such as to allow of the material being impregnated with only a relatively small quantity of casein e.g. 1--1,5 per cent of the weight of the material.  The material is dried after impregnation, and then subjected to a high temperature for a short time in the presence, if desired, of vapours of para-formaldehyde. The casein may be brought into solution with the aid of alkali. In an example, the fabric or yarn is boiled in a solution containing casein and formalin for about 4 hours.  It is rinsed, dried, and then heated for about half an hour at about 145 DEG  C. in the presence or absence of paraformaldehyde vapour.  The material treated may be of cotton or artificial silk.  It may be a fabric with cotton warp and artificial silk weft.  The material may be subjected to the heat treatment under pressure and for this purpose it may be placed in a closed chamber.  Hexamethylene tetramine may be used in place of formalin in the boiling bath.
Patent GB-984972-A (GB)
Title: A device for agitating liquids in vessels
IPC: F27D27/00
Filed: 1962-10-02
Abstract: 984,972. Agitating mixing vessels. GES. FUR HUTTENWERKSANLAGEN. Oct. 2, 1962 [Dec. 7, 1961], No. 37394/62. Heading B1C. A mixing vessel 1 is mounted in a frame 5 supported on not less than three parallel vertical cranks 7 whereby the vessel is given a circular planetary motion in a horizontal plane ; the vessel is inserted sufficiently deeply in the frame so that its centre of gravity lies in the plane of the frame. The frame may be triangular as shown, and the vessel detachably mounted therein by tapered sockets 4 receiving pins 3 of complementary cross-section. In another embodiment, Figs. 4 and 5 (not shown), the frame is U-shaped and the vessel is secured therein and arranged for discharge by tilting, being locked in the operative position by a pin detent.
Patent GB-368835-A (GB)
Title: Process of producing acetic anhydride from ethylidene diacetate
IPC: C07C51/56
Filed: 1930-12-12
Abstract: Acetic anhydride is made by passing the vapour of ethylidene diacetate through a tube heated to about 300-400 DEG  C.  A catalyst may be employed but is not necessary.  The tube may be of heat-resisting glass, steel, steel alloy or copper, and may be immersed in a bath of lead to maintain the desired temperature. The time of contact of the ethylidene diacetate vapour with the tube may be from one to six seconds.  Specification 23190/14, [Class 2 (iii), Dyes &c.], is referred to.
Patent GB-1291218-A (GB)
Title: Windscreen wiper assembly
Inventor: PARKER ERIC GEORGE
IPC: B60S1/18
Filed: 1971-08-12
Abstract: 1291218 Windscreen wiper GENERAL MOTORS CORP 12 Aug 1971 [27 Aug 1970] 37887/71 Heading A4F A windscreen wiper assembly comprises a guide 40 along the lower edge of the windscreen having parallel tracks 50, 51, a trolley 42 driven to and fro along the track by arm 70 and guided by wheels 55, 56 engaged in the tracks, a wiper arm 35 rigidly fixed to the trolley so as to be driven to and fro across the windscreen in a vertical wiping position and a mechanism for parking the wiper arm off the lower edge of the windscreen. The parking mechanism comprises a pair of latches 100, 80, Fig. 8. Latch 100 is biased by a torsion spring 110, Fig. 2 (not shown) to the position shown in Fig. 1 and during normal wiping roller 56 passes limb 104a by a camming action which rotates the latch 100 and allows roller 55 to freely pass the latch, Figs. 4, 5 and 6 (not shown). Latch 80 comprises an L-shaped rod 81 pivoted to the end of mount 83 Fig. 8, a stop 85 pivoted to the end of rod 81 and protruding into an opening 87 in track 50, and a guide rod 82 on the lower end of rod 81. In normal wiping operation spring 95 biases the latch 80 to the position shown in Figs.1 and 8 so that guide rod 82 forms part of the lower wall of track 51, and stop 85 does not protrude into channel 50. When the main wiper switch is switched off, the motor continues to operate until a limit switch 46 is actuated by the parked position being reached, Fig. 7. Moving the main switch to the off position also causes a solenoid 96 to be energized until the limit switch 46 is actuated, and solenoid 96 causes latch 80 to pivot so that stop 85 protrudes into channel 50 and guide rod 82 is moved away from channel 51 Fig.9 (not shown). When roller 55 abuts stop 85, the trolley pivots about 55 until it reaches the position shown in Fig. 7 when roller 56 abuts limit switch 46 and deactuates the drive motor. In this position the wiper is parked off the screen. On starting up the wipers again, the trolley pivots in the opposite direction about roller 55 until roller 56 is in position to cam up latch 100 to free roller 55.
Patent GB-303069-A (GB)
IPC: F25B17/00
Filed: 1928-12-27
Abstract: 303,069. Perfection Stove Co., (Assignees of Keith, D. F.). Dec. 27, 1927, [Convention date]. Refrigerating, absorption machines for.-Apparatus of the reversing type is provided with a syphon 20 for automatically returning solvent from a sump 2<a> in the evaporator 2 to the aircooled generator-absorber 1 during the early part of the generating period, and a vapour return pipe 4, the end of the pipe 3 through which the liquid refrigerant flows from the water-cooled condenser 6 to the evaporator being sealed by the liquid in the evaporator to prevent the vapour returning through the condenser to the generatorabsorber. The longer limb of the syphon is disposed in the duct through which the generated vapour passes to the rectifier 5 and the condenser, and the generator-absorber end of the return vapour pipe is surrounded by a sleeve 27. The generator-absorber is provided with ribs 10 and is arranged in an air shaft and heated by an oil-burner 15 receiving oil through a pipe 16 from a cup 17. This cup has an inverted bottle 18 containing sufficient oil for one period of generation. In a modification, the solvent is returned to the generator-absorber from a dome 30, Fig. 2, into which the solvent flows from the sump in the evaporator through a pipe 31. In another arrangement, the dome is replaced by a separate vessel disposed above the evaporator. In a further arrangement, the generator-absorber end of the syphon is immersed in liquid in a vessel 38, Fig. 4.
Patent GB-336499-A (GB)
Title: Improvements in or relating to episcopic projection apparatus
IPC: G03B21/06
Filed: 1929-12-13
Abstract: 336,499. Leitz, E., [Firm of]. Jan. 31, 1929, [Convention date]. Optical-projection apparatus. - In episcopic projection apparatus, a concave reflector B, a. front reflector C, and two curved side reflectors D, are provided in conjunction with one or more lamps A, to illuminate the field of the object being projected. The curvature of the side reflectors may correspond approximately to that of the reflector C, and their focal length may be from one to one-and-a-half times that of the projection lens F.
Patent GB-1111290-A (GB)
Title: Alloy cast iron
IPC: C22C37/06
Filed: 1965-09-08
Abstract: An alloy cast iron has a composition within the following range:- .C.2.1  - 3.4% .Ni.0    - 2.6% .Cr.12.5 - 25.6% .Mo.0.38 - 2.9% .Fe.the balance  and a specified minimum abrasion resistance after air cooling from about 2000 DEG F.  The particular abrasion test is described in the Specification.
Patent GB-1037229-A (GB)
Title: Improvements in or relating to electrical plug and socket couplings
IPC: H01R13/447
Filed: 1963-10-02
Abstract: 1,037,229. Two-part couplings. CLANG Ltd., H. E. AUSTEN, and C. D. HARWOOD. Jan. 4, 1965 [Oct. 2, 1963], No. 38784/63. Heading H2E. In an electrical plug and socket coupling, a rotary shutter 9 that shields the socket contacts 5 is biased to its closed position by a compression spring 18 provided on a slider 14 that engages a peg 11 on the shutter 9. The shutter is rotated by partially inserting the plug pins in its apertures 21 until these coincide with contacts 5 to permit full insertion.
Patent GB-918858-A (GB)
Title: A valve or shut-off device provided with a means for automatic emptying of downstream pipes
IPC: F16K24/00
Filed: 1959-11-16
Abstract: 918,858. Valves. RHEINISCHES METALLWERKE G.m.b.H. Nov. 16, 1959 [Nov. 21, 1958], No. 38801/59. Class 135. A valve or shut-off device provided with means for automatically emptying the downstream pipe comprises a shut-off member 13 provided with radial ribs 30 which move in recesses in the valve housing. Each rib comprises two limbs which are radial extensions of the valve member 13 and are spaced apart and filled with an elastomeric material and the recesses of 42 are provided between the ribs and the shut-off member, thus allowing the lower portion 43 of the ribs to yield. With the shutoff valve in the closed position as shown, the ribs 30 uncover two outlets 24 to allow the fluid downstream of the valve to escape through a port in the housing (not shown) to a chamber 41 and through the outlet passages 24. When the shut-off valve is opened to allow flow through the pipe, the ribs 30 close the outlet passages 24. A diaphragm member 14 forming a cover for the shut-off member is clamped to the valve housing to prevent leakage.
Patent GB-1013586-A (GB)
Title: Improvements in or relating to bottle closures
IPC: B65D41/34
Filed: 1964-09-23
Abstract: 1,013,586. Bottle closures. METAL CLOSURES Ltd. (Trefimetaux S.A.). Sept. 23, 1964, No. 38851/64. Heading B8T. A tamperproof screw cap of thin ductile metal has an upper threaded part 3 and a lower part 4 for engaging under a shoulder on a bottle neck, and the two parts are separated by two parallel interrupted slit lines 5 having a weakening line 7 extending between them. When the cap is unscrewed a portion 12 is separated from the parts 3, 4 to give a visual indication. Each line 5 comprises slits separated by bridges, and each line may have at least one bridge wider than the remainder. The line 7 extends from a slit in one line immediately adjacent a bridge which is wider than the other bridges in the line.
Patent GB-832082-A (GB)
Title: Engine and change-speed gearbox unit for small cars
IPC: F16H57/02
Filed: 1956-12-21
Abstract: 832,082. Driving gear. NSU WERKE A. G. Dec. 21, 1956 [Dec. 21, 1955], No. 38971/56. Class 7(2) [Also in Group XXXI] A motor vehicle drive unit incorporates a change-speed gearing as described in Specification 832,081, an engine whose crankshaft 1 drives via gears 2, 3 and a clutch 4 the change-speed gearing onepiece input shaft 5, and a differential gearing powering articulated road wheel shafts 15 and whose driving gear 12 meshes the change-speed gearing output gear 9 mounted on the shaft 5 and clutchable to a gear 8 splined thereon for a direct drive.
Patent GB-376220-A (GB)
Title: Improvements in or relating to gaseous discharge devices
IPC: H01J61/067
Filed: 1930-12-29
Abstract: 376,220. Discharge apparatus. WESTINGHOUSE LAMP CO., Bloomfield, New Jersey, U.S. A.-(Assignees of Thomas, C. H.J.) Dec. 29, 1930, No. 38992. Convention date. Dec. 28, 1929. Void [Published under Sect. 91 of the Acts]. [Class 39 (i).] In a discharge device such as a lamp or X-ray tube, the positive ion bombardment is concentrated on a small surface of an electrode so as to heat it to a temperature of thermionic emission, and the electrode is made of a thermionic refractory metal such as thorium, uranium, zirconium or titanium. One or both electrodes of a lamp is hollow and formed by drilling a hole 7 in a block 3 of thorium. The exterior surface may be oxidized to form an insulating coating 8, or a coating of oxide of zirconium, aluminium or magnesium may be applied, so as to confine the discharge to the recess ; or an electrode of zirconium or titanium may have an external coating of thorium oxide. In another electrode, thorium is coated on or alloyed with the hollowed-out part of a tungsten or tantalum block. The lamp may be of the positive column type. The filling may be neon at a pressure of 10À3 mms. Dimensions of the electrodes and lamps are given.