baber/WOPTO huggingface dataset:
Patent GB-325176-A (GB)
Title: Improvements in or relating to self-locking nuts
IPC: F16B39/36
Filed: 1929-05-11
Abstract: 325,176. Jackson, L. Mellersh-, (Brown, T. H.). May 11, 1929. Locking.-A lock nut, having a split 11 throughout its length, has an hexagonal upper portion 8 and a conical portion 9 carrying a rib 10, the outer surface of which fits the conical bore 6 of surrounding member 5. This member is screwed on to the bolt to be locked by the threaded portion 7. Rotation of the portion 4 relative to the member 5 on the bolt, causes the former to grip the bolt firmly. The part 4 may have its internal bore slightly smaller than the diameter of the bolt to enable a spring action to give further grip.
Patent GB-1464424-A (GB)
IPC: G01S7/527
Filed: 1974-04-03
Abstract: 1464424 Echo ranging ELECTROACUSTIC GmbH 3 April 1974 [7 April 1973] 14852/74 Heading G1G A sonic or ultrasonic pulse echo-location system including a visible or audible indicating arrangement includes means for modulating an auxiliary signal, on to the transmitted signal, at a frequency distinct therefrom. The detected signal is demodulated to extract the auxiliary signal which is used to control the indicator so that extraneous received signals may be distinguished or removed, In Fig. 1, the main signal e.g. 25KHz is mixed with the auxiliary signal e.g. 1KHz in modulator 3. Switch 4, activated by timer 5 provides pulses of the combined signal at the input of power amp. 6, the output from which is fed via T-R switch 7 to transmit/ receive transducer 8. Signals received by transducer 8 are passed through T-R switch to input amplifier 9. The amplified signal 10 is fed to both demodulator 16, and delay 12, which may be a delay line or a shift register. The output from delay 12 is amplified at 13 and used to modulate the horizontal deflection circuit for C.R.T. display 14. The auxiliary signal is extracted from the received signal in demodulator 16 and further selectivity is obtained in filter 17, which has a particular delay corresponding to its time constant, which delay is introduced into the signal amplified at 13 by delay 12. The auxiliary signal is then rectified by diode 18 and applied as a further control signal for C.R.T. display 14 whereby any echo signal may reach the horizontal deflection circuit in CRT 14 but the trace is only brightened when the auxiliary signal is simultaneously detected to produce bright traces (22), whereas extraneous signals produce dim traces (23). In further embodiments, the frequency of the auxiliary signal produced by oscillator 2 may be varied - with corresponding variation of filter 17 and delay 12, or the indicating arrangement may be by electro-sensitive paper, in which case amplifier 13 is outputted by line 20 and the combined signal used to vary input sensitivity.
Patent GB-996055-A (GB)
Title: A combined turbo-super-charger and valve for incorporation in an internal combustionengine exhaust system
Inventor: KELLETT ERIC
IPC: F02B37/02
Filed: 1961-04-25
Abstract: 996,055. I.C. engine supercharging and exhaust brakes; gas turbine plant. C.A.V. Ltd. April 12, 1962 [April 25, 1961], No. 14868/61. Headings F1B and F1G. A turbo-supercharger in an engine exhaust system has a pair of inlets 4a, 4b each one of which connects with exhaust ports 1 of one group of engine cylinders, and a valve 7 which may close both inlets and place all the exhaust ports I in communication. The exhaust manifold is divided by partition 2 into symmetrical parts and outlets 3a, 3b connect with inlets 4a, 4b of radial flow turbo-supercharger 5 through a tubular part 6 mounting the butterfly valve 7. When valve 7 is open exhaust gases are directed through inlets 4a, 4b to act on the rotor throughout two arcs. In the broken line position valve 7 serves also as an exhaust brake.
Patent GB-475878-A (GB)
Title: An improved method for joining ceramic bodies to one another or to metallic bodies
IPC: C04B37/02
Filed: 1936-05-26
Abstract: Metallic coatings are formed on ceramic articles by applying in powder form, and preferably in admixture with an organic adhesive, to the ceramic article a layer of base metal such as iron, chromium, tungsten, or nickel, or an alloy composed of two or more such base metals, or an alloy composed of one or more such base metals and other elements and then heating the article to the sintering temperature of the base metal or alloy, if necessary in an atmosphere free from oxygen.  The base metal must have a melting point of at least 720 DEG  C.
Patent GB-119897-A (GB)
Title: Improvements in or relating to Electro-magnetic Friction-brakes more especially intended for the Driving and Change-speed Gear of Motor Road-vehicles.
IPC: F16H61/02
Filed: 1917-10-15
Abstract: 119,897. Pollard, G., and Menco-Elma Syndicate. Oct 15, 1917. Cone and disk; electric and magnetic.-Bevelwheel epicyclic variable-speed gearing of the kind described in Specifications 1853/12, 9557/14, 110,020, 118,308, and 118,444, [all in Class 80 (ii), Gearing, Variable-speed &c], is provided with electro-magnetic brakes in which one of the brake members is pressed by spring action against a stop adjustable to compensate for wear. The casing X carries magnetic coils G and slidable brakemembers T adjusted by screws Z or Z<0> and kept in position by springs Y, extending between two adjacent brake members, or by springs Y<0>. The springs Y may be replaced by two separate springs. The armature-members E<2> slide on pins P<2> under the action of the coils G and are normally disengaged from the members T by springs e. The adjusting-screws may pass through the members T, in which case no springs are required.
Patent GB-1039841-A (GB)
Title: Field-effect transistor variable resistance circuits
Inventor: ROGERS GORDON FOX
IPC: H03F3/16
Filed: 1964-04-10
Abstract: 1,039,841. Automatic volume control. RADIO CORPORATION OF AMERICA. April 10, 1964, No. 14979/64. Headings H3T and H4R. A variable resistance element in a variable attenuator is constituted by the drain-source path of a field-effect transistor to the gate electrode or substrate of which a control voltage (e.g. from a battery or from an A.G.C. or pulse source) is supplied, the operation of the transistor as a bidirectional resistor being linearized by the application of an appropriate fraction of the voltage developed between source and drain electrodes to the gate electrode or substrate. Fig. 4 illustrates a simple potentialdivider circuit in which the voltage from a source 52 is attenuated to an extent dependent upon the magnitude of the voltage E 1  applied to the gate electrode of an insulated gate field effect transistor 50 through the resistor 64. So that the transistor presents the same resistance to signals of either polarity from source 62, a portion of the voltage across the transistor is applied by the potential divider 68, 70 to the gate electrode through capacitor 72. If the gate electrode is disposed symmetrically between source and drain electrodes, the fraction of the voltage to be fed back to the gate electrode is one-half. Alternatively, resistor 70 may be omitted and resistor 64 made equal to resistor 68. In modified circuits, Figs. 6, 6A, 6B (not shown), either the fed-back voltage or the control voltage E 1  may be fed to the substrate connection instead of to the gate electrode, or the gate electrode and substrate may be connected together. In Fig. 7 (not shown) a T-type attenuator circuit comprises series field-effect transistors 100, 102 arranged as in Fig. 4, having P-type substrates and a shunt field-effect transistor 104 having an N-type substrate, the attenuation being controlled by the voltage of source 119. Transistors of the same conductivity types may be used if the control voltages are in appropriate sense. Source 1 19 may be replaced by a pulse source which controls the resistances of the transistors in accordance with a programme by providing pulses of appropriate amplitude and duration.
Patent GB-645259-A (GB)
Title: Improvements in and relating to dough dividers
Filed: 1947-06-06
Abstract: 645,259. Dough-dividers. POINTON, J. E., and BAKER PERKINS, Ltd. June 6, 1947, No. 15019. [Class 87 (ii)] A dough-divider comprises a lever 7 operating a ram 1 and a knife 5 in common so that the knife is positively displaced while the ram is resiliently displaced by a spring 19 and a bell crank 16, an abutment 23 associated with the ram, a stop 26a movable into the path of the abutment, and means for tripping the stop as the knife completes cutting off dough from a hopper 4. Positive movement in both directions is given to the operating lever 7 by cams 10 and 13 fixed on a shaft 14 and engaging rollers 9 and 12 respectively, the roller 12 being mounted on an extension 11. Mounted on the shaft 14 is a cam 30 against which a roller 29 on one arm 27 of a bell crank is held by a spring 31, the other arm 26 incorporating the stop 26a. The abutment 23 is carried on a connecting rod 18 between the ram 1 and the bell crank 16 and is adjustable by a screw 24 to suit the weight of dough to be divided. The cam 13 moves the lever 7 so as to advance the ram 1 and the knife 5 together until the abutment 23 meets the stop 26a, when the ram is arrested, but the lever 7 and knife 5 continue their movement and the spring 19 is compressed. The trip cam 30 is so formed that when the knife has moved across the hopper opening and cut off the dough the stop 26a releases the abutment 23 and the spring 19 then causes the ram 1 to push the dough into a waiting division box 6. On the return stroke the knife is brought into line with the ram and they are retracted together. To avoid possible damage through the operation of the stop when there is no dough in the hopper a trip plate 33 is provided. When the hopper is empty the ram 1, encountering no resistance, moves through its full stroke with the result that a block 38 carried by the lever 16 engages the stop 26a and rocks the bell crank to lift the roller 29 off the cam 30 and at the same time rocks an arm 32 mounted on the shaft of the bell crank to an extent such that its tip 32a becomes engaged by a projection 33b on the trip plate 33, the stop thus becoming inoperative. When dough is placed in the hopper the arm 32 is released by the operator moving an arm 35, bringing the stop again into normal operation.
Patent GB-1312711-A (GB)
Title: Flame-proof plate
IPC: E04B1/94
Filed: 1970-03-26
Abstract: 1312711 Flame proof plates K SHIMIZU and K SUZUKI 26 March 1970 [10 May 1969] 15022/70 Heading B2E [Also in Division B5] A flame proof plate comprises a base e.g. of plywood or fibre board a first coating of a self setting waterproof composition, a coating of a foamable water soluble sodium or potassium silicate and a further coating of the waterproof composition. The waterproof composition being produced by adding, to a water soluble sodium or potassium silicate, 1-50% of dicalcium silicate. The compositions may be applied by roll coating. A decorative pattern may be printed on the uppermost layer. Fillers such as peaolite asbestos fibres or bentonite may be included in the composition. The soluble silicate layer may be applied by flow coating.
Patent GB-1396884-A (GB)
Title: Valve proving systems
IPC: F23N5/18
Filed: 1971-05-14
Abstract: 1396884 Valves BABCOCK & WILCOX Ltd 12 May 1972 [14 May 1971] 15070/71 Heading F2V Rotary ball valve 10 is opened to supply gas to a burner by spring-returned actuator 34 when solenoid valve 31 pressurizes line 30, the pressure in line 30 also acting via restrictor 33a to close a valve 26 in a duct 15 extending from the ball chamber of valve 10, and via restrictor 32a to advance piston 17 against spring(s) 18, air and gas in cylinder 16 and duct 15 downstream of valve 26 being released by valve 20. In this condition, leakage into duct 15 is sensed by pressure-responsive switch 27. When valve 31 depressurizes line 30 to close valve 10, valve 26 opens and piston 17 returns leftwards to exhaust the ball chamber and duct 15 so that leakage gas is encouraged to flow to duct 15, switch 27 again ultimately responding to a predetermined pressure rise in duct 15 indicative of continuing leakage after piston 17 has fully returned. In a modification, valve 26 is replaced by a 3-way piston valve mechanically linked to the ball valve.
Patent GB-982724-A (GB)
Title: Improvements relating to cine photography
IPC: G03B15/08
Filed: 1963-04-17
Abstract: 982, 724. Method of forming composite pictures. R. J. REID. April 17, 1963, No. 15116/63. Heading G2C. A method for producing of a motion picture in which an object or a set of objects are illuminated by visible light and photographed on a film and then the same or a different object or set of objects, at least one of which has a surface which emits visible light when illuminated by ultra violet or infra red light, is illuminated with the light and photographed on the same length of film, the object with the luminated surface being moved during the second exposure. In the embodiment shown, a sky background 60 is photographed by means of a camera 15 and visible light source 23. A model rocket 63 coated with a fluorescent or phosphorescent paint is then supported on a sloping track 66 mounted on bracket 67 so that it can slide down the track and the screen is illuminated with ultra violet or infra red light from source 28 and photographed on the same length of film; only the moving rocket being visible this time. Filters may be used in the camera to cut out strong light. The light sources have resistances 27, 32 in their electric circuits so that fade-in and fade-out effects can be achieved.
Patent GB-606094-A (GB)
Title: Improvements in opening means for tins or receptacles intended for adhesive or plastic substances
IPC: B65D43/26
Filed: 1939-05-22
Abstract: 606,094. Opening tins. JENSEN, O. V. May 22, 1939, No. 15170. [Class 66] The lid 2 of a tin 3, Fig. 3 is raised by moving outwardly the lower end of a sheet-metal lever 1 bearing against the rim of the tin. The lever 1 is pressed into a slot 4 in the side of the lid, and prevented from falling out by arms 6, Fig. 4, and by a wedge-shaped embossment 5. The strip may lie in a recess in the tin. In a modification the arms 6 are below the slot 4 and the embossment above, the strip being inserted from the outside of the lid. The tin may be made airtight by an encircling paper band.
Patent GB-563375-A (GB)
Title: Improvements in and relating to resinous condensation products
IPC: C08G14/06
Filed: 1942-10-30
Abstract: Resinous condensation products are prepared by heating together under alkaline conditions an aldehyde and 4,6-diamino-s-triazinyl-2-p-sulphamyl - phenyl - carbamyl - methyl sulphide.  The aldehydes which may be used, the manner in which modified resin may be prepared, the compositions which may be prepared from the resins and their applications are as described in Specification 561,044.  4,6 - diamino - s - triazinyl - 2 - p - sulphamyl - phenyl - carbamyl sulphide is prepared by adding p-sulphamylphenyl-carbamyl chloro methane to a hot aqueous solution of thioammeline containing sodium hydroxide, allowing to stand, filtering the precipitate and recrystallizing from water. p-Sulphamyl-phenyl-carbamyl chloro methane is prepared by refluxing excess of chloracetyl chloride with sulphanilic acid and distilling off excess chloracetyl chloride.  The p-sulphonic acid-phenyl-carbamyl chloro methane isolated by crystallization is converted to the sodium salt and treated with phosphorous pentachloride and finally ammonia to give the sulphamyl derivative. Specifications 542,932, 554,195, and 9244/41, 10917/41 and 1458/42, as open to inspection under Sect. 91, are referred to.
Patent GB-775107-A (GB)
Title: Improved means for the vacuum treatment, for instance for drying and impregnating, of electric capacitors and other articles
Inventor: WALKER HERBERT
IPC: F26B5/04
Filed: 1954-05-24
Abstract: 775,107. Capacitors. BRITISH INSULATED CALLENDER'S CABLES, Ltd. May 23,1955 [May 24, 1954], No. 15264/54. Class 37. [Also in Groups XIII and XXVIII] In an apparatus for drying and impregnating capacitors of the wound type, the capacitors are placed in containers 1 which are moved by a ram 51 or other means into a first low vacuum chamber 10, then to a heated high-vacuum chamber 25 where insulating oil is supplied via a pipe 40 and hand-controlled valve 41, thence to a second lowvacuum chamber 11 from whence they are moved to the exit station.
Patent GB-1283114-A (GB)
Title: Collapsible reflecting stereoscopes
IPC: G02B27/22
Filed: 1970-03-31
Abstract: 1283114 Photo-grammetry WILD HEERBRUGG A G 31 March 1970 [14 Oct 1969] 15279/70 Heading G1F [Also in Division G2] A collapsible reflecting stereoscope comprises a lens holder 1, Fig.l carrying two magnifying lenses L1, L2 and having two lengthwise surfaces each provided with grooves 13, 14, Fig. 5 a pair of outer deflecting mirrors 6, 7 having shafts 111, 112, 121, 122 mounted displaceably and pivotally in the grooves and a pair of inner mirrors 2, 3 having frames pivotable about shafts 4, 5, the lensholder 1 having a recess 10 with two inclined sides for receiving upper end extensions of the frames of mirrors 2 and 3. To render the stereoscope operational, shafts 111-122 are displaced into grooves 14, shafts 112, 121 being displaced into notches 15 and shafts 111, 122 being retained by springs 16, the force of gravity then causes mirrors 2, 3 to fall into place. The stereoscope is folded by removing shafts 112, 121 from their notches 15 and slipping them into and along grooves 13, whereupon noses 21, 31 of mirrors 2, 3 are pressed into the recess 10 so that finally all mirror and lens surfaces are protected from damage. The non-optical parts are made of plastic, and in the operative position the mirrors are all inclined at 45 degrees to the horizontal.
Patent GB-455148-A (GB)
Title: Improvements in or relating to shoes, slippers and like footwear
IPC: A43B13/12
Filed: 1935-05-25
Abstract: 455,148. Shoes. PIRELLI, Ltd., 343, Euston Road, London, and BARKER, G. E., Beech Lane, Stretton, Staffordshire. May 25, 1935, No. 15287. [Class 17 (ii)] In shoes, slippers, and like footwear of the kind comprising a fabric upper, a dense rubber sole or heel, and a rubber foxing, the foxing 4 is united to the upper 2 by sponge rubber 5 at the interface between the parts and is vulcanized in situ thereat. The sponge rubber may be preformed and then vulcanized to the upper and foxing, or may be formed from a rubber mixing in situ upon the upper simultaneously with the vulcanization of the dense rubber foxing. The foxing may be formed integrally with, or separate from the sole 1 or heel, and in the latter case is vulcanized in position simultaneously with the operation of vulcanizing the sponge rubber bond as between the upper and the foxing.
Patent GB-1256073-A (GB)
Title: Improvements in heat exchangers
Inventor: SMITH PETER ROY
IPC: F28D17/00
Filed: 1968-03-29
Abstract: 1,256,073. Thermal regenerators. ASSOCIATED ENG. Ltd. 28 March, 1969 [29 March, 1968], No. 15368/68. Heading F4K. A thermal regenerator has a heat transfer mass 3 comprising particulate material which is fluidized by the heat exchanging fluids as they flow through the mass. As shown, the mass is contained in compartments formed in a stationary container 2 having end plates 5, 18 with ports 9, 12 therein by which the fluids enter and leave the mass. Plates 21 of perforated or porous material prevent contact between the mass particles and the container end plates. Rotary valve plates 4, 17 have ports therein positioned to permit alternate flow of the hot and cold fluids through the mass in the usual manner. The valve plates are interconnected by a shaft 15 and the lower plate has teeth 14 on its periphery so that it may be rotated by a gear or chain drive (not shown). Alternatively each valve plate may have means thereon whereby it is rotated by the velocity of the fluids in the manner of an inpulse turbine. In the arrangement shown the heating fluid enters at 10 and leaves at 20 and the higher pressure fluid to be heated enters at 1 and leaves at 19. The entry and exit ports for the fluids may be at the same end of the apparatus so enabling one valve plate only to be required.
Patent GB-328470-A (GB)
Title: Improvements in belt drives
IPC: F16H7/12
Filed: 1929-05-16
Abstract: 328,470. Nyborg, T. G., and Higgins, F. May 16, 1929. Addition to 304,061. Driving-gear for endless-belt conveyers.-The belt drive of the parent Specification is provided with means whereby, in the event of a breakage occurring in the belt, the latter is adapted to pile up beneath a shield or abutment 16 so positioned in relation to the parts as to force the jockey pulley 4 away from the driving drum 3 against the action of the spring 9. The shield is carried by brackets 14 located on each side of the side plates 15.
Patent GB-807058-A (GB)
Title: Improvements in draw-bar structures
Inventor: BROCK CHARLES TABOR
IPC: B60D1/54
Filed: 1957-05-15
Abstract: 807,058. Vehicle draw-gear. ALLISCHALMERS MANUFACTURING CO. May 15, 1957, No. 15408/57. Class 103(5). A removable draw-bar 6 is provided with an eye 10 for engagement with the tractor hook 11 and with a joggled bracket 8 for overlapping engagement with the arcuate plate 1 carried by arms 2 pivoted at 3 to the tractor thus forming a rigid towbar the angular position of which may be altered by engagement of the U- shaped bolt 7 in alternative pairs of holes 5. When it is desired to change to a mounted implement the pins 23, which prevent angular movement of the arms 2 about the axis 3, are withdrawn and the draw-tear 6 released from the hook 11 and removed. The arcuate plate 1 remains attached to the tractor but in an out-of-theway position when the pins 23 are inserted in further holes in the bracket 4.
Patent GB-1407422-A (GB)
Title: Fluid motor control mechanism
IPC: E01C19/28
Filed: 1972-02-04
Abstract: 1407422 Controlling hydraulic motors RAYGO Inc 27 Sept 1972 [4 Feb 1972] 15503/75 Divided out of 1407421 Heading F1A [Also in Division F2] A control system for a fluid motor 22, whose speed is controlled by speed regulating means, includes an arrangement adapted to prevent overspeeding in the event of a failure of the speed regulating means and consisting of means driven by the motor 22 for producing fluid-pressure of a magnitude which varies with the speed of the motor and means for stopping the motor 22 if the fluid-pressure rises above a predetermined value. As described the motor 22 (e.g. for driving the vibration producing mechanism of a road roller) is supplied with pressure fluid from a pump 52 via a solenoid operated four-way valve 53. The speed of motor 22 is controlled by conventional speed regulating means including a pulse generator 55 and speed sensor 54. The motor 22 rotates a shaft (not shown) which carries eccentrically mounted weights 26 (which form part of the vibration producing mechanism). Each weight 26 is attached to a piston 35 in a cylinder 33. Thus as the speed of motor 22 increases, the centrifugal forces generated by the weights 26 will cause increasing fluid-pressure in the cylinders 33 and hence in line 46. A normally closed pressure responsive switch 56 opens when the fluidpressure in line 46 exceeds a critical value, (e.g. if the speed regulating means fails) thus interrupting the energizing circuit for the solenoids of valve 53, permitting the spool of the valve to centre itself thereby preventing fluid from flowing to the motor 22 from pump 52 to stop the motor 22.