baber/WOPTO huggingface dataset:
Patent GB-1466191-A (GB)
Title: Device for limiting brake pressure
IPC: B60T8/18
Filed: 1974-05-10
Abstract: 1466191 Brake limiting devices REGIE NATIONAL DES USINES RENAULT and AUTOMOBILES PEUGEOT 10 May 1974 [24 May 1973] 20802/74 Heading F2F A brake pressure limiting device in a vehicle has a fixed valve body and an inertia ball valve member 18 responsive to vehicle deceleration for isolating an inlet 2 from an outlet 6 and provision is made to vary the resistance to closing of the valve according to vehicle static loading. In the construction shown ball 18 is biased away from a seat 19 by a spring 24 the compression of which is varied according to vehicle loading by a piston 22 connected through a linkage comprising a pivoted arm 25 element 27 and lever 28 to a vehicle antiroll bar 13, lever 28 being rotated in an anticlockwise direction S as loading increases. In a further embodiment the spring 24 is omitted and the ball is located on a ramp 34, Fig. 3, (not shown) the angular position of which is varied through the linkage, lever 28 in this case being rotated in a clockwise direction as the vehicle load increases. Instead of a ball the valve member may be integral with a shaft 46, Figs. 5, 6 (not shown) pivotally supported in the limiting device body and carrying an arm (47) to the end of which is connected an inertia mass (48). The arm (47) is connected through a spring (51) to an arm (49) articulated at one end about a shaft (50) of the body. At the other end arm (49) is articulated to a connection rod (52) linked to the lever 28 integral with the anti-roll bar 13. Spring (51) is thereby tensioned according to vehicle load. A stop screw (53) Fig. 7 (not shown) enables the tensioning to be initially set.
Patent GB-929310-A (GB)
Title: Improvements in taximeters
IPC: G07B13/00
Filed: 1960-06-15
Abstract: 929,310. Taximeters. VEB. (K) APPARATEBAU. June 15, 1960 [March 31, 1960], No. 21004/60. Class 106 (3). The drive to a taximeter is supplied through a flexible shaft and is transmitted by means of a worm and wheel, a change wheel and gearing 5 to a tariff gearing 6 which drives an impulse wheel 8. Movement of the wheel 8 causes a contactor 9 to close contacts 10 operating an electromagnet 12 to cause motion of a fare counting mechanism and also movement of an arm 11 to release contactor 9. The impulse wheel is also caused to register waiting time.
Patent GB-1433212-A (GB)
Title: Base-band delay equalizer
IPC: H03H7/01
Filed: 1973-05-03
Abstract: 1433212 Delay equalizers NIPPON ELECTRIC CO Ltd 3 May 1973 [4 May 1972] 21034/73 Heading H4R Delay equalization of the different frequency components of a base band signal transmitted by angle modulation is effected by a variable capacitance diode Cd biased by a D.C. source Eo and controlled by the base band signal applied to the diode via a resistor R1, a second resistor R 2  shunting the diode such that the delay approximates to CdR 1 R 2 /R 1 +R 2 . The junction capacitance Cd=Co(1+v/Eo)<SP>-n</SP> where Co is adjusted by the bias Eo in the absence of base band signal v to produce the desired delay us frequency characteristic. The equalizer is located before the modulator and/or after the demodulator in an FM transmission system for mpx audio, fdm telephone, video or tdm signals. In modifications (Fig. 6, not shown) a parallel RC circuit is interposed between the upper ends of Cd and R 2  and a low pass filter may be formed by the capacitance of the diode and an inductor in series with R1.
Patent GB-884178-A (GB)
Title: Ventilator grating
IPC: F02B41/04
Filed: 1959-06-19
Abstract: 884,178. Ventilators. LEX, E. June 19, 1959 [July 7, 1958; Jan. 12, 1959], No. 21078/59. Class 137. A ventilator grating has vertical blades 17 of V-shaped cross-section of which the apices lie in a plane parallel to the lateral planes bounding a frame 5 in which the blades are carried, each blade being fixed within an inserted frame 14 which may be welded to the frame 5. A second row of V-shaped blades, as shown at 18 in Fig. 6 may be situated behind the first row; and an air filter 9 may be secured on the inside of the frame 5. In a modification, Fig. 7, one arm of each blade is approximately at right angles to the lateral planes bounding the frame 5, and a third row of blades 39 is positioned between the blades of the second row. The device will operate to clean air irrespective of the direction of travel of the vehicle on which it is fixed, the cleaning being effected when dust particles accumulate in the spaces 25, 31 of the blades 17, 18 respectively and drop away, e.g. through apertures at 25. The vehicle engine fan may aid in drawing in air through the grating.
Patent GB-1061255-A (GB)
Title: Improvements in or relating to welded heat exchangers
IPC: F28F1/00
Filed: 1964-05-21
Abstract: 1,061,255. Heat exchangers; waste heat boilers. SCHMIDT'SCHE HEISSDAMPFG.m.b.H. May 21, 1964 [May 25, 1963], No. 21088/64. Headings F4A and F4S. In a heat exchanger, comprising heat exchange tubes 3 disposed in a tubular jacket 2 between distributor and collector heads 4, fitted over the two ends of the jacket, the heads are each of one-piece solid construction with inward facing pipe-like protrusions 5 fashioned out of the solid material which are welded to the heat exchange tubes 3, and an integral flange 6 which is welded to the jacket 5. The pipe like protrusions have bores 9 which communicate with transverse bores 8 extending through outside pipelike protrusions 7, to which are connected inlet and outlet ducts as appropriate. The heat exchange tubes 3 may be forked, as shown, to reduce the number of welds required. The internal bores 8, 9 of the heads 4 may be arranged as shown or they may be arranged to provide an inlet and outlet both at the same head, which is convenient when a number of heat exchangers are combined. Inlet and outlet ports 10 for a cooling medium are included in the jacket 2. The heat exchanger is intended for the cooling of a high pressure synthesis gas, flowing through the tubes, by water which in an assembly of the heat exchangers, Fig. 4 (not shown), forming a waste heat boiler, is vaporized to form steam which passes to a separator drum (15). Water is carried from the drum back to the heat exchangers by a pipe (16).
Patent GB-1270477-A (GB)
Title: Ceramic-metal junctions
IPC: C04B37/02
Filed: 1970-05-01
Abstract: 1,270,477. Ceramic-metal seals; brazing. COMMISSARIAT A L'ENERGIE ATOMIQUE. 1 May, 1970 [8 May, 1969], No. 21102/70. Headings B3R and B3V. [Also in Divisions C6-C7] A ceramic-to-metal seal comprises a portion formed from an alloy, containing more than 50% by weight of Ni and having a coefficient of thermal expansion of 110 to 150 x 10<SP>-7</SP> per ‹ C., bonded by a brazing alloy to a ceramic portion formed from magnesia. Suitable Ni alloys are (1) Ni 80%, Cr 20%; (2) Ni 60%, Cu 33%, Fe 6À5%; (3) Ni 60%, Fe 20%, Mo 20%; and (4) Ni 80%, Cr 14%, Fe 6%. The brazing alloy is preferably the silver-copper eutectic which may contain Ti or Zr, e.g. 0À5% Ti in hydride form. Alternatively, separate sheets of brazing alloy and active metal may be used. The ceramic may be metallized with Ti or Zr hydride or Mo-Mn, Fe-W or Mo-Ti mixtures, e.g. in powder form in an organic binder. Additionally, the Ni alloy may be coated with copper electrolytically. An example of magnesia is given which includes 95À91% MgO and a number of minor constituents. The magnesia is mixed with 0À1 to 1% titanium dioxide, e.g. 0À25%, and with 0À1% of a lubricant, e.g. zinc behenate, to avoid flaws when moulding the magnesia, e.g. to form a closure for brazing in the end of a Ni-alloy tube. Although the coefficients of expansion of the tube and closure material are substantially the same, the ceramic is under slight compression by the tube after the seal has cooled.
Patent GB-1181472-A (GB)
Title: Improvements in or relating to Bearing Bushes and Blanks therefor and the Manufacture thereof.
Inventor: WATSON COLIN
IPC: F16C33/14
Filed: 1968-05-03
Abstract: 1,181,472. Bearings. C. WATSON. 19 July, 1968 [3 May, 1968], No. 21107/68. Heading F2A. A cylindrical bearing bush comprises an inner liner of phosphor-bronze and an outer sleeve of a material other than phosphorbronze, and is made either by shrinking the sleeve on to the liner or expanding the liner into the sleeve by means of heat treatment. The outer sleeve may be of cast iron, steel, aluminium, aluminium alloy, lead, plastics or filled asbestos.
Patent GB-1402237-A (GB)
Title: Propellant charges comprising ammonium nitrate and nitrocellulose
IPC: C06B31/52
Filed: 1973-05-03
Abstract: 1402237 Propellants SOC NATIONALE DES POUDRES ET EXPLOSIFS 3 May 1973 [3 May 1972] 21170/73 Addition to 1349237 Heading C1D A propellant charge consists of an agglomerate of the granules according to Specification 1,349,237. Agglomeration may be effected by the addition of a gelatinizer, e.g. nitromethane or an acetone-alcohol or ether-alcohol mixture, and drying at 60‹ C.; by adding a solution of poly-(glyceryl acrylate) and drying; or by compressing at a pressure of 100-1500 bars. The propellant charge may be used in sealing guns, small and medium ealibre firearms, or gas generators.
Patent GB-744549-A (GB)
Title: Improvements in or relating to step ladders
IPC: E06C1/16
Filed: 1953-07-30
Abstract: 744,549. Step ladders. ABBOTT, S. S. March 18, 1954 [July 30, 1953], No. 21186/53. Class 20(2). A folding step ladder comprises rear supports G connected by a top step E to which the ladder part A, having steps A<SP>1</SP> and an upper cross batten C, is hinged at D, the step E having a hand hole F by means of which the ladder is opened or folded.
Patent GB-179865-A (GB)
Title: Improvements in and relating to the lubricating of saws
IPC: B23D59/04
Filed: 1921-08-10
Abstract: 179,865. Doman, J. P. Aug. 10, 1921. Saw handles; hollow handles; combined with other appliances.-The handle of a saw is fitted with an inclined pocket 3 in which is arranged an oil-bottle 6 from which the oil may be directed as desired through a passage 5 on to the blade 1. The bottle is closed by a screw plug 7 formed with an inclined flange 9 against which a catch 17 acts to hold the bottle in position. The plug is perforated to form a bearing for a spindle fitted with a vent valve 14 and an outlet valve, both of which are normally closed by a spring and are opened by pulling a knob 16 when it is desired to lubricate the saw.
Patent GB-1426221-A (GB)
Title: Linear synchronous motors
IPC: H02K41/03
Filed: 1973-05-04
Abstract: 1426221 Linear motors HITACHI Ltd 4 May 1973 [8 May 1972] 21373/73 Heading H2A In a linear synchronous motor system wherein super-conducting field coils N, S are mounted on the moving body (not shown) and polyphase armature coils u, v, w, are laid along the ground, current in the armature coils is switched according to either a full wave pattern as in Fig. 4 or a half wave pattern as in Fig. 5 (not shown), and both levitation and propulsion of the body are obtained if the current in one armature coil crosses a zero point when a quantity γ satisfies the inequality:- where γ corresponds to the distance between a transverse side of the armature coil and a transverse side of the approaching field coil, n is the number of phases, m the length of the armature coils, u is the angle of overlap representing the commutation overlap period when the current in one phase is dying away and the current in the next phase is growing, and k is 2 or n depending on whether a full wave or half wave current supply system is used (Figs 7, 8, not shown). The degrees of levitation and propulsion are varied by adjusting the value of γ (Figs. 9, 10, not shown), the propulsion being even reversible. The field coils may be shorter in length than the pole pitch (Fig. 12 not shown). In the arrangements of Figs. 13-15 (not shown) vertical coils are disposed on both the ground and the vehicle.
Patent GB-237750-A (GB)
Title: Improvements in and relating to air-filters
IPC: B01D46/30
Filed: 1924-09-10
Abstract: 237,750. Speidel, R. Sept. 10, 1924. Disinfecting and deodorizing air and gases.- An air filter containing purifying and disinfecting material for refrigerators and ice safes comprises a box containing a " piston " with perforated ends filled with germicidal material, the compartments of the box formed between its ends and the piston being filled with filtering and heatinsulating material respectively and the piston being displaceable in the box to vary the size of the compartments. Each filter consists of a tube i screwed into a fixed outer tube and containing layers of heat insulating and of filtering material t, u between which is inserted a shallow sieveended piston o containing germicidal material such as potassium permanganate. The piston has a pivoted handle p, and one of its ends is removable. The filtering and heat insulating materials may consist of cork chips of different sizes waterproofed by liquid pitch sprinlded on the cork resting on a sieve which is shaken to remove superfluous pitch and prevent caking.
Patent GB-375586-A (GB)
Title: Improvements in or relating to brakes for road vehicles
IPC: F16D65/28
Filed: 1931-07-27
Abstract: 375,586. Vacuum brakes ; compensating for wear. PAYNE, M., 50, Hook Road, Surbiton, Surrey, and CLAYTON DEWANDRE CO., Ltd., Titanic Works, Lincoln. July 27, 1931, No. 21420. [Class 103 (i).] A vacuum brake for a steering-wheel of a motor vehicle comprises a vacuum cylinder 1 and piston 4, carried by the swivelling stub axle 2 or by a part moving therewith, and arranged to actuate the brake operating cam or equivalent element by means of a lever arm 6, the end of which connected to the piston 4 projects into the cylinder 1 when the piston is in its innermost position thus permitting a large stroke of the piston. The cylinder is provided with a fixed housing 12 having an opening 13 to permit the movements of the lever 6, which opening is covered by a flexible sleeve 14 of rubber or other material fitting closely at its other end around the lever 6. To permit manual adjustment for wear of the brake the lever 6 is loosely mounted on the cam shaft 7 and an adjusting rod 8 pivoted to an arm 9 fixed to the shaft 7 passes through a projection 11 on the lever 6, an adjusting nut 10 on the rod 8 being held against the projection by a spring 8a.
Patent GB-1430844-A (GB)
Title: Controlling synchronous electrical machines
IPC: H02P9/30
Filed: 1973-05-04
Abstract: 1430844 Automatic voltage control SIEMENS AG 4 May 1973 [4 May 1972] 21456/73 Heading G3R The voltage generated in the stator winding of a synchronous electrical machine is controlled by adjusting the excitation current in dependence on the armature reaction and a signal proportional to the cosine of the load angle. As shown, the armature winding (not shown) on the stator of a generator 1 is connected to a threephase system N. The actual line voltage U is sensed and compared with a desired voltage U* to produce an error signal which is passed through a PI controller 4, a multiplier 5 and an adding amplifier 6 to form a control signal for a controlled rectifier circuit 3 which determines the voltage applied to the rotor exciter winding 2. The multiplication factor cos # applied to multiplier 5 represents the load angle factor and is derived from a stator current co-ordinate resolver 8 and a function generator 7 coupled to the rotor, by way of a vector rotator VD, field simulation circuits 11, 12 and a vector analyser VA. The correction factor #U F  added in the amplifier 6 compensates for armature current reaction and is derived from a further field simulation circuit 16 and a feedback integrator 20.
Patent GB-589060-A (GB)
Title: Improvements in or relating to w.c. flushing apparatus
IPC: E03D1/12
Filed: 1944-11-02
Abstract: 589,060. Water-waste preventing. FOMINAYA, P. Nov. 2, 1944, No. 21472. Convention date, Oct. 26, 1943. [Class 26] In a system of W.C. flushing by the outlet of air or water combined with the discharge pipe and pan, a siphon or water seal is provided at both ends of the discharge pipe, the said pipe being a controlling air chamber, release of which starts water-flow through the pipe from the upper siphon, a copious flow being obtained by having the cross-sectional area of the upper end of the pipe, whether bent to form a siphon or opening into a bell, greater than that of the main body of the pipe. In the form shown, a cistern 1 contains water to cover the bell 2 enclosing the upper end 4 of the discharge pipe 5. On opening the valve 13 air escapes from the siphon, followed by a flow of water to the lower end of the pipe 5, through the outlet 8 to the soil pan. The valve 13 may be associated with the pipe 5, the top of the bell 2 or the upper end of the pipe bent to form a siphon leg. When the opening 31 in the bell 2 is uncovered, air re-enters the siphon which is hydraulically sealed at the lower end by a reservoir 7, and the cistern is refilled. The reservoir 7 may or may not be in one piece with the pan or formed by a bend in the pipe itself. By opening the valve 10 to release the water in the lower end of the pipe 5, the pan is flushed through the tube 11 and afterwards by the water in the cistern. The valves 10, 13 may be dispensed with and the flushing effected automatically.
Patent GB-639730-A (GB)
Title: An improved method of rendering aluminium resistant to attack by hydrogen peroxide
IPC: C23C22/68
Filed: 1947-08-06
Abstract: Aluminium is rendered resistant to attack by hydrogen peroxide by treatment with an aqueous solution of sodium hydrosulphite. The treatment may vary from 1/2 to 48 hours at a temperature from 15 DEG -100 DEG C and at a concentration of 1-25 per cent.  The aluminium, which may form the interior surface of a container for hydrogen peroxide, may be pretreated by boiling with a dilute solution of sulphuric acid, followed by rinsing with water.
Patent GB-724275-A (GB)
Title: Improvements in and relating to sealing arrangements between relatively moving partsof apparatus operating with fluids at high pressure
Inventor: COX MARTIN
IPC: F28D19/04
Filed: 1952-09-02
Abstract: 724,275. Rotary regenerative heat-exchangers. POWER JETS (RESEARCH & DEVELOPMENT), Ltd. Sept. 2, 1952. [Sept 12, 1951], No. 21495/51. Class 64 (1). Apparatus for operating with fluids at high pressures and including a casing and relatively movable members therein, one of which is a partition separating high and low pressure zones and the other is a member passing through said partition from one zone to the other, comprises a seal provided between relatively movable. faces of said partition and said other member, means defining a closed control chamber with a leakage passage thereto and a leakage passage therefrom, one of said leakage passages being a communication with one of said zones variable in accordance with the clearance between a face of the seal and the relatively moving face and the other of said leakage passages being constant, and means for applying to the seal a force in accordance with the pressure in said control chamber. In the form shown, the invention is applied to a rotary regenerative heatexchanger in which cold air at high pressure is heated by hot gas at low pressure. The partition separating the high and low pressure zones incorporates an articulated seal comprising the sealing shoes 10 which are hinged together by pins 11. Each pin 11 has, at its end adjacent the high-pressure zone, a head portion 11a with a flat face 11b level with the sealing faces of the shoes 10. The pin is formed with a chamber 11c and a duct 11d is formed in the face 11b and leads into the chamber 11c, and a leakage passage 13a leading to the low-pressure zone of the heat exchanger is formed in a bottom closure 13 of said chamber. A pipe 14 interconnects the chamber 11c and the interior of a bellows 16. Movement of the bellows causes a corresponding movement of the seal to or from the face of the usual matrix rotor (not shown). In operation, a running clearance is maintained between the sealing surface and the rotor face, and leakage fluid from the high-pressure zone enters chamber 11c through duct 11d and escapes to the low-pressure zone through leakage passage 13a. Under normal running, this leakage to and from the chamber 11c is balanced and no pressure is applied to the seal except that applied by springs 20. Should the running clearance increase however, the pressure in chamber 11c and therefore in the bellows chamber will rise and since the leakage passage 13a remains invariable this increase in pressure acts on the movable end 15 of the bellows chamber which, through the tubular member 14, moves the sealing members 10 towards the face of the rotor, reducing the running clearance to its correct size. According to the Provisional Specification, the bellows may act as a spring obviating the use of a separate spring. Also a strip may be arranged on the matrix rotor to present a smooth surface to the orifice 11d as the rotor moves past.
Patent GB-654724-A (GB)
Title: Improvements in or relating to methods of making glass bases for electron discharge and other devices
Inventor: WELLSTEAD LESLIE GEORGE
IPC: H01J9/32
Filed: 1948-08-14
Abstract: 654,724. Glass-to-metal seals. ELECTRIC & MUSICAL INDUSTRIES, Ltd. Aug. 14, 1948, No. 21509. [Class 36] A glass base for an electron discharge device is made by inserting lead-in conductors 3 in apertures in a die 2, surrounding them with a length 4 of hard glass tubing and placing a cup-shaped element 5 of glass on the die 2 so that the base of the cup rests on the die with a small contact area. The assembly is then heated to make the glass parts 4 and 5 plastic and a die 1 is brought towards the die 2 to shape the glass to the desired configuration. Owing to the small contact area between the glass 5 and the die 2, the conduction of heat away from the glass is reduced.
Patent GB-614964-A (GB)
Title: Improvements in or relating to inductors or transformers
IPC: H01F27/02
Filed: 1946-07-18
Abstract: 614,964. Transformers and inductances. HOLZER, R. C. DE. July 18, 1946, No. 21517. [Class 38 (ii)] [Also in Group XXXVI] A terminal of a high-frequency or other transformer or inductor winding 1 on a tubular former 2, which may contain a magnetic dust or other core, is constituted by passing the coil end 4 or a lead 5 attached thereto through an aperture 6 in a plug 3 of insulating material inserted in the former 2. Other terminals may be similarly provided in one or more plugs. The aperture may extend diametrically, axially or at an intermediate angle, and the leads may be bent around the outer surface of the tubular former. for a part of a convolution or to a degree in excess thereof, on either or both sides of the aperture. In a modified arrangement, Fig. 7, the apertures 6 in the plug 3 are open, axially extending, slots to hold U-shaped leads 5 against the inner surface of the former 2 through which one leg of each lead extends outwardly, with a tapped hole 8 provided in the outer end of the plug to afford securing means for the transformer. In a further arrangement, the plug comprises two segments, each with an axially extending aperture, and a U-shaped lead may be moulded therein with the two segments spaced apart by a plate inserted between them to secure them in the tubular former and to afford supporting means for the transformer. Specification 595,102 is referred to.