baber/WOPTO huggingface dataset:
Patent GB-777956-A (GB)
Title: Improvements in or relating to fluid valves
Inventor: MAGIN SIDNEY HENRY ALBERT
IPC: F02C7/00
Filed: 1954-05-25
Abstract: 777,956. Gas turbine plant. NAPIER & SON, Ltd., D. May 25, 1955 [May 25, 1954], No. 15451/54. Class 110 (3). [Also in Group XXIX] A valve in the outlet duct of a combustionturbine gas producer comprises a rotary valve member 9 controlling the flow of gas between an inlet duct 10 connected to the gas producer and either an outlet duct 11 leading to jet reaction nozzles associated with a helicopter rotor or an exhaust duct 12, the duct 12 being fitted with an adjustable throttle valve 36 so that the effective areas of the ducts 11, 12 may be made approximately the same to avoid any violent back pressure fluctuation acting on the turbine in moving the valve 9 from one position to the other. The valve 9 which is built-up from spaced-apart circular end walls 17, 18, flat and arcuate interconnecting plates 21, 24 and suitable strengthening webs is mounted on trunnions 19 for rotation in a valve chamber 13 having a fixed wall 25 and ports 14, 15, 16 aligned with the ducts 10, 11, 12, respectively. Sealing between the valve and its chamber is provided by outwardly-sprung rings 32 around the end walls and resilient strips urged outwardly by leaf-springs and disposed at right angles to the rings 32 at the straight ends of the arcuate plate 24.
Patent GB-1349313-A (GB)
Title: Conveying and holding apparatus for workpieces
IPC: B23Q7/00
Filed: 1972-04-04
Abstract: 1349313 Work-holders PIERRES HOLDING SA 4 April 1972 [29 April 1971] 15492/72 Heading B3D [Also in Division B8] A disc shaped workpiece is held against a suction nozzle 20 and positioned by a U-shaped notch in a resilient stripper 22 operative to strip the workpiece from a rotary transport arm 8 (see Division B8). The nozzle 20, a centering member 17 and a magnet 16 are carried by a housing 14, the centering member having a bore 18 for the passage of a laser beam which operates on the workpiece. On the completion of work, a rotary arm 13 strikes the stripper 22 and lifts it from the nozzle 20, to sweep the workpiece from the nozzle. The stripper is attracted back to the nozzle by the magnet 16. Reference has been directed by the Comptroller to Specification 1,220,919.
Patent GB-679994-A (GB)
Title: Improvements relating to tungsten alloys of high density
IPC: C22C27/04
Filed: 1950-06-21
Abstract: Tungsten alloy products of high density are formed by impregnating a tungsten skeleton, which may be in the form of a presintered or of an unsintered fusing of tungsten powder, with a tungsten alloy of eutectic composition.  The latter may be an alloy with an iron group metal, preferably 52 per cent tungsten and 48 per cent nickel, and may be applied as a pressed powder melted after application or by dipping the skeleton in to the molten alloy.
Patent GB-947333-A (GB)
Title: A buff and draw gear for railway vehicles
IPC: B61G9/08
Filed: 1961-04-28
Abstract: 947,333. Railway vehicle combined buff and draw gear. BENDIX CORPORATION. April 28, 1961 [June 20, 1960], No. 15512/61. Heading B7T. A combined buffer and draw gear for a railway vehicle comprises a forward friction wedge 76 and a three-shoe arrangement 74, Figs. 3, 5, which may be pushed by the yoke 46 under buff or draft load into a casing 52 to abut and slide the tubular member 92 relatively to the casing 52 so as to cause fluid flow from a chamber 110 through a metered orifice 96 into a chamber 105, and movement of a floating piston 102 against the force of compressed air in a chamber 106. The pin 112 is provided with an overload pressure release valve 129, and the gear has the usual stops 40, 53 and a sliding key 42. In operation, when the cushioning device 30 contracts, chamber 118 expands and ring 122 is frictionally retained by the casing 52 and made to slide on 92 into engagement with a stop 123, thereby allowing fluid to enter the chamber 118 through openings 120. During the return stroke ring 122 is picked up by ring 125 and moved to close the openings 120 so that returning fluid is throttled by the small openings 127. In another embodiment, Fig. 7, the existing hydraulic and pneumatic arrangement is retained, but the friction device comprises wedges 130, 134 acting against friction members 138, 142 and two shoes 140. The wedge 130 has an end 150 which engages a spring-loaded stem 152 held in the end of the tubular member 92 so that on load the friction arrangement moves the member 92 as before. When the load is relieved, however, the spring 154 presses back the stem 152 to disengage the friction members and permit the compressed air within chamber 106 to extend the gear. In a further embodiment, Fig. 11, the friction arrangement comprises a draft bar 176 which acts against two shoes 160, 161 abutting the tubular member 92, and leaf springs 172, 174 are provided to effect a spreading action on the shoes.
Patent GB-239950-A (GB)
Title: Improvements in push-button control systems for electric motors and other apparatus
IPC: B66B1/16
Filed: 1924-06-27
Abstract: 239,950. Waygood-Otis, Ltd., and Clemence, E. June 27, 1924. Push-button control systems. -In push-button control for electric motors operating lifts &c., the circuits of the floor push-buttons 7<1>, 7<2>, 7<3> Fig. 2, or those of the ear push-buttons 4<1>, 4<2>, 4<3>, Fig. 3, are interconnected so that the closure of any one push-button switch breaks the circuits of the push-buttons above it, and thus allows only the lower to obtain control if two are pressed simultaneously. In the construction of the separate switches, a base 13, Fig. 5, carrying two normally closed stationary contacts 21 and two normally open contacts 22, Fig. 4, is held in a case 11 by a screwed-down cover 15 bearing a rubber ring 14.
Patent GB-484856-A (GB)
Title: Improvements in or relating to refrigerating apparatus
IPC: F25D21/02
Filed: 1937-06-04
Abstract: 484,856. Refrigerating. ELECTROLUX, Ltd. (Platen-Munters Refrigerating System Aktiebolag) June 4,1937, No. 15535. [Classes 29 and 64 (ii)] Defrosting of the cooling element 10 of a refrigerating system is effected through the action of a temperature sensitive element 24 located at a short distance from the cooling element and adapted to change rapidly in temperature when the flow of air through the gap between the elements is impeded by the accumulation of frost. The outer surface of the sensitive element is covered by insulation 27 and/or a guard of insulating material 28 is arranged adjacent to it, and heat penetrates the insulation from the relatively warm air of the cabinet, while the flow of air through the gap prevents flow of heat between the sensitive element and the cooling element. As frost forms, the air stream is restricted and the face 26 is rapidly chilled. The sensitive fluid medium contracts and controls a valve 20 to cut off the supply of fuel to the burner 16 of the generator 12 of the refrigerating system and defrosting takes place, until the sensitive element again establishes the fuel supply. A thermostat 80 controls a further fuel valve 82 to maintain a constant cabinet temperature. The melted water may be led to a tray 23 which may receive heat from the burner to dispose of the water by evaporation into the outside air. The sensitive element and/or the guard may be mounted so as to permit of adjustment of the space between them and the cooling element. The invention may be applied to compression refrigerating systems, the sensitive element controlling the motor switch. In the case of a system having a cooling element supplied with fluid of constant low temperature, the sensitive element is adapted to shut off the supply during defrosting. Alternatively, the element may control signal, alarm or recording apparatus to give warning of the necessity for and termination of defrosting.
Patent GB-181025-A (GB)
Title: Improvements relating to the generation and storing of steam and to the utilisation thereof for power purposes
IPC: F01K5/00
Filed: 1922-06-02
Abstract: 181,025. Marguerre, F., and Hausmann, M. June 2, 1921, [Convention date]. Generating by reduction of pressure of heated water; caustic-soda and like boilers.-Relates to a process for the generation and storing of steam and the utilization thereof for power purposes, of the kind in which water in a boiler is evaporated by reduction of pressure and is compressed and stored in a storage chamber, the stored steam being used in an engine which exhausts into the boiler. According to the invention, a lye boiler a is separate from the storage chamber f and contains a coil b through which is circulated water from the storage chamber.
Patent GB-763378-A (GB)
Title: Extraction of moisture from asphalt
Inventor: SCOFFIELD DOUGLAS
IPC: E04D13/17
Filed: 1954-05-26
Abstract: 763,378. Roofs. SHIELDS & WHITAKER Ltd. Aug. 19, 1955 [May 26, 1954], No. 15545/54. Class 20(4) In laying asphalt, to enable the greater part of its moisture to be drawn off quickly, a number of separate spaced apart air-pockets 18 are formed in the asphalt as it is laid, each connected to atmosphere through tubes 12 which are long enough to provide a suction sufficient to draw the moisture into the air pockets 18 and thence up the tubes. The pockets 18 are formed by plates 10 having their corners turned down and the tubes 12 are welded thereto or may be removably fixed. A cowl 14 of angle metal prevents ingress of rain &c. and also increases the draught effect. A rubber ring 16 is pressed on to the asphalt layer to seal any gap. Once the greater part of the moisture has been extracted, the tubes 12 may be sawn off or removed and the holes filled in with asphalt.
Patent GB-154516-A (GB)
Title: Improvements relating to inflators or air pumps for cycle tyres and the like
IPC: F04B33/00
Filed: 1920-06-09
Abstract: 154,516. Chapman, W. R. June 9, 1920. Portable hand - compressing pumps.-A tyre-inflater comprises a flexible connexion f within a rigid guide-tube d secured to the end of the barrel a and a plunger b, the rod of which is adapted to close over the guide-tube during the compression stroke of the plunger. The plunger rod is closed by a plate e and the connexion is maintained in the guide-tube by means of a collar j on the connexion and a screwed sleeve g at the lower end of the tube. A washer h maintains a tight joint between the connexion and guide-tube in any position of the connexion.
Patent GB-583880-A (GB)
Title: Engine starter gearing
IPC: F02N15/06
Filed: 1945-06-19
Abstract: 583,880. Engine turning-gear. BENDIX AVIATION CORPORATION. June 19, 1945, No. 15584. Convention date, June 22, 1944. [Class 7 (v)] Engine turning-gear comprises a screwed power shaft 2 carrying a sliding pinion 6 movable into and out of mesh with an engine gear 7 and connected through an over-running clutch 15, 18, with a nut 9 coacting with the screw the latter being surrounded by a circular latch which is inoperative in the normal concentric position on the screw and which is movable to an eccentric position to the lock the pinion in mesh until the engine becomes self-operative. The movement of the pinion into gear is limited by thrust washers 8 adjacent a shoulder 3. The nut 9 is flanged and surrounded by a barrel 11 connected at one end to a screw-protecting thimble 14, driving clutch member 15 and a thimble 21 which encloses a spring urging the driven clutch member 18, secured to the pinion, into engaged position. A spring-urged latch member 24 is slidable radially on the nut on studs 25-27 and has a locking tooth 36, Fig. 2, coacting with a notch 37 on the land of the thread when the nut is in pinion-engaging position. A radially movable sleeve 38 is telescopically mounted on the latch ring and coacts with a trip 41 to restore the latch to concentric position, this being effected either manually or automatically as described in Specification 570,465. The driving torque is transmitted through a resilient block 13 enclosed in the barrel 11. In operation energization of shaft 2 causes the pinion to move into meshing position, the subsequent rotation of the nut being transmitted through the block 13. When the engine fires the release of the torque on the drive permits the nut to be moved back to a position where the latch is engaged by springs 30 and further backward movement prevented. The clutch 15, 18 is disengaged so that the pinion 6 overruns its shaft. If the engine now stalls the shaft 2 overtakes the pinion and cranking is resumed until the engine becomes self-operative whereupon the starting motor is stopped and the latch disengaged by the trip 41 so that the nut can overrun the shaft 2 and disengage the pinion.
Patent GB-1254018-A (GB)
Title: Improvements in hearing aids
Inventor: BROWN BERNARD JAMES
IPC: H04R25/02
Filed: 1969-03-25
Abstract: 1,254,018. Hearing aids. BERNA INDUSTRIES Ltd. 24 March, 1970 [25 March, 1969], No. 15607/71. Divided out of 1,254,017. Heading H4J. [Also in Division H2] The subject matter of this Specification is substantially the same as that described with reference to Fig. 1 of Specification 1,254,017. The claims are concerned with a hearing aid having a secondary cell, and an internal coil and rectifier for charging the cell. A receptacle for the aid (when not in use) includes another coil for supplying current inductively to the internal coil when the aid is in the receptacle.
Patent GB-1513850-A (GB)
Title: Production of a lead-acid storage battery
IPC: H01M4/22
Filed: 1977-04-14
Abstract: 1513850 Forming lead-acid battery plates VARTA BATTERIE AG 14 April 1977 [18 May 1976] 15628/77 Heading H1B In the forming of lead-acid battery plates in the battery container, the forming acid is topped out, by turning the container on its side, and then the container is passed on an acid-proof endless belt 2 through a washing stage 1 where water is sprayed through nozzles 12, an anti-oxidation stage, where boric acid is sprayed at 19, and finally a hot air drying stage. Both the wash water, and hot air are moved counter to the direction of movement of the containers.
Patent GB-173469-A (GB)
Title: Improved mechanism for converting rotary into reciprocatory motion
IPC: B06B1/16
Filed: 1921-06-07
Abstract: 173,469. Tekniske Forsogsaktieselskab. Dec. 31, 1920, [Convention date]. Addition to 158,228. Machinery, utilizing inertia to obtain move. ments in.-Relates to a modification in the means for converting rotary into reciprocating motion described in the parent Specification, and consists in providing weights carried at the outer extremities of each arm or two or more arms of a system of rotatably. driven jointed arms, the lengths and directions of rotation of which, and the mass of the weights, are preferably such that the centre 0f gravity of the system oscillates in a straight line or in a closed curve approximating thereto. In the simplest form, Fig. 4, a weight O1 is carried at the joint W2 between the oppositely-driven arms S1 S2 and a weight O2 at the end of the arm S2; when L2=2L1 and the mass O1=the mass O2, the reactive force on the body V has no lateral component. By vary. ing the relative moments of the weights O1, O2, small lateral components may be introduced, as required, e.g. in the application to the wings cf ornithopters. The number of arms and weights may be multiplied, as shown in Fig. 6, which discloses three arms S1, S2,. S3. In place of the chain drive described in the parent Specification, a pinion (not shown) rigid with the arm S2, Fig. 4, may mesh with an internally toothed wheel concentric with the pivot W1, or, through an idler journaled on the arm S, with an externally-toothed wheel. In the arrangement diagrammatically shown in Fig. 12, the arm S2 is driven by a connecting-rod T2 and a crank T, rotating in the direction of the arrow. The crank T1 may be extended and the connecting-rod T2 replaced by a pin-and-slot connection with the arm S2. These arrangements are stated to be applicable also to the form shown in Fig. 6. The arms and weights may be combined in the form of eccentrics O1, O2, Fig. 13, an arrangement suitable for driving hammers, wherein a short stroke is desired and heavy shocks arise. The eccentric O1 may be driven by bevel-gears G, F, and the eccentric O2 in the opposite direction by bevel-gears G, E through one or more (say four) crank-like links T2, having preferably a. throw x equal to the eccentricity. The Specification as open to inspection under Sect. 91 (3) (a) comprises also the following subject-matter : The eccentrics may be formed with lead-filled chambers to increase their effective mass. As applied to hammers, the arrangement may be duplicated, Fig. 14 (Cancelled), in order to apply symmetrical forces to the tup V, the elements being then interconnected trough a hollow shaft W1 To reduce shock, the drive to the arms or eccentrics may be spring- cushioned. A form is described in which the arms are approximately or exactly equal, and a weight is carried at the end of the outer arm only. This subject-matter does not appear in the Specification as accepted.
Patent GB-1492828-A (GB)
Title: Brakes
IPC: F16D69/00
Filed: 1975-04-16
Abstract: 1492828 Disc brakes; brake discs; preventing brake noise SOC ANON FRANCAISE DU FERODO 16 April 1975 [18 April 1974] 15682/75 Heading F2E A brake comprises at least one friction surface 11 mounted to rotate about an axis A, and a friction member 13 which has a contact face for engagement with the surface 11, the surface 11 being shaped so that when it rotates the position of the centre of pressure P of the contact face on the surface 11 varies, the width L of the surface 11 being substantially constant and smaller than that of the contact face of the friction member 13. The brake may be a bond brake or a drum brake but the embodiment illustrated is a disc brake having a disc 10 with two flat friction surfaces 11, 12 for engagement by pads 13, 14 respectively. The surface 11 is defined between outer and inner contours E, E<SP>1</SP> of generally elliptical shape with a major axis X. The outer contour E extends between an inscribed circle C 1  and a circumscribed circle C 2  having radii R 1 , R 2 , the length of R 1  being between 0À80 and 0À99 of the length of R 2  (preferably 0À90). Likewise the contour E<SP>1</SP> extends between circles C<SP>1</SP> 1 , C<SP>1</SP> 2 . The pad 13 co-operates with surface 11 over an annulus having a width 0 and L is advantageously between 0À70 and 0À90 of D (preferably 0À80). The surface 12 is of a shape similar to surface 11 but the surfaces 11, 12 are asymmetrical about a median plane perpendicular to the axis A and passing midway between the surfaces 11, 12. The arrangement in use is said to reduce noise due to the fact that zones in the pads 13, 14 are alternately heated and cooled leading to thermal and mechanical stresses and internal damping of the pads 13, 14. The surfaces 11, 12 instead of being elliptical with two points on the inscribed circle and two on the circumscribed circle might have a different number of these points on these circles.
Patent GB-972483-A (GB)
Title: Improvements in or relating to electrical signalling systems
Inventor: DAVIS JOHN CHRISTOPHER HAMMOND
IPC: H03M1/44
Filed: 1961-05-01
Abstract: 972,483. Electric selective signalling systems. BRITISH TELECOMMUNICATIONS RESEARCH Ltd. April 27,1962 [May 1, 1961], No. 15689/61. Heading G4H. [Also in Division H4] In a pulse code modulation system in which amplitude modulated sampled pulses are coded in a four digit cyclic permutation binary code, the sampled pulses are applied to a four stage parallel readout coder in which each stage provides for the withdrawal of a different fixed portion of the peak value of the sample pulse current. A current 8i, equal to half the maximum value of the sample pulse signal is subtracted from the sample pulse at the input of the first coder stage and if the sample amplitude is greater than 8i the difference current flows via the emitter-collector path of transistor VT2 to the output of the stage. If the sample pulse amplitude is less than 8i, then the difference current flows via the emittercollector paths of transistors VT3, VT1 and switches a circuit 01 from its normal state in which it provides a binary 1 signal to a state in which it supplies a binary 0 signal, furthermore the current flow sets up a voltage across resistor R1 such that a substantially equal current, reversed in direction is supplied to the output of the stage via transistor VT4. The unidirectional output current from the first stage, which is the same value for sample currents which are greater or less than 8 i  by the same amount is applied to the second stage in which a current of 4i is initially subtracted. The two subsequent coder stages initially subtract currents of 2i and i respectively. The code digits are read out in parallel from circuits 01,02 &c.
Patent GB-120720-A (GB)
Title: Improvements in Telephone Apparatus for use on One Common Line.
IPC: H04M1/70
Filed: 1918-09-26
Abstract: 120,720. Aktieselskabet Electrisk Bureau. Nov. 15, 1917, [Convention date]. Manual exchange systems and apparatus; party line systems and apparatus.-In a party-line system of the kind in which each of the intermediate stations is provided with a commutator switch, this switch is arranged independently of the telephone apparatus in order that a standard apparatus may be used at the end stations without the switch and at the intermediate stations with the switch. In the arrangement shown, the apparatus comprising the telephone, hook switch, induction coil, and the magnetos I is connected to the terminals L1, L3; while the bell K is connected to the terminals EK1, EK2, and to the terminals L1, L2. The terminals L1. L2 and EK1, EK2 are connected to the terminals L5, L6 respectively of a commutator switch S. The other terminals L3 and L4 of the switch S are connected to the line LV and the line LA respectively. With the switch S in the position shown, and with the telephone upon the switch hook, the lines LA, LV are connected through as follows : -Upper lead of line LA, switch terminals L3, L6, terminal EK1, contacts 4, 5 of hook switch, terminal L2, switch terminals L5, L4, to upper lead of line LV; also lower lead of line LA, switch terminals L3, L6, terminal EK2, through shunt around magnets I, contacts 2, 3 of hook switch, terminal L1, switch terminals L5, L4 to lower lead of line LV. With these connexions, the bell K is in shunt across both the lines LA and LV. A similar through connexion between the lines LV, LA is established when the commutator switch S is in its second position. With the switch S in the position shown, the telephone is connected to the line LV through the contacts 1, 2 of the hook switch when the telephone is removed from the switch hook, the bell K being simultaneously disconnected from the line LV by the disengagement of the contacts 2, 3 and 4, 5. The through connexion between the lines LA and LV is broken and the bell K is connected across the line LA. When the switch S is in its second position and the telephone removed from its hook, the telephone is connected across the line LA and the bell K across the line LV.