baber/WOPTO huggingface dataset:
Patent GB-854360-A (GB)
Title: Angular accelerometer
IPC: G01P15/08
Filed: 1956-02-06
Abstract: 854,360. Electric indicating systems. RESEARCH INTERESTS Ltd. (Montrose-Oster, L. E. W.). Feb. 5, 1957 [Feb. 6, 1956], No. 3622/56. Class 40 (1). [Also in Groups XIX and XX] An angular accelerometer comprises a real or virtual mass in neutral equilibrium mounted for movement in at least one direction but restrained against such movement by at least one pressure-sensitive element which produces an output as a function of pressure variations resulting from acceleration forces acting on the mass. The pressure-sensitive elements may be piezo-electrical crystals, carbon discs superimposed upon one another, or strain gauges. As shown (Fig. 1), masses 4, 4<SP>1</SP> at opposite ends of a lever arm 3 pivoted at 2, rest on pressure-sensitive elements 5, 5<SP>1</SP>. Angular acceleration in the plane of the arm 3 increases the pressure on one pile and decreases it on the other pile, the difference in pressure, which is gauged electrically in a bridge circuit (Fig. 5), being a measure of the angular acceleration. In another embodiment (Fig. 3), two identical gyroscopes 8, 8<SP>1</SP> rotating in opposite directions, act as virtual masses. The gyroscopes are coupled together by toothed sectors 9, 9<SP>1</SP> to balance turning movements about axes 16, 16<SP>1</SP> and 10, 10<SP>1</SP> are counterweights for these sectors. The gyroscopes are mounted in a frame 6 pivoted on stub axles 7, 7<SP>1</SP>. A lever arm 11 (similar to the arm 3 in Fig. 1), extends from the frame 6 and acts on two piles of discs 12, 12<SP>1</SP>, equivalent to the piles 5, 5<SP>1</SP> used in the bridge circuit of Fig. 5.
Patent GB-822136-A (GB)
Title: Improvements relating to fuel feed installation for internal combustion engines
IPC: F02M59/42
Filed: 1958-02-04
Abstract: 822,136. Fuel injection systems. DAIMLER-BENZ A. G. Feb. 4, 1958 [Feb. 5, 1957], No. 3672/58. Class 7(3) [Also in Group XXVIII] A fuel supply system for an injection pump 2 comprises a main engine-driven feed pump 4 and an additional independently driven feed pump 5 which is switched off automatically at a speed above the engine starting speed but beneath the idling speed. The pump 5 is driven electrically or pneumatically and is controlled by an electrically operated switch 7 having one control circuit 37 including the main ignition switch 34 and a switch 17 operated by the delivery pressure of the pump 4, a parallel control circuit 36 containing a switch 24 operated by pressure in the lubricating oil circuit, and an independent circuit containing a manually operated switch 32. At starting the switches 17, 24, are closed and closing of the ignition switch 34 brings the pump 5 into operation. When the engine starts the delivery pressure of pump 4, acting on piston 16, opens switch 17 but the pump 5 remains operative through the circuit 37 until a speed just below idling speed is attained, when the lubricating oil pressure acting through pipe 19 on a piston 21 breaks the switch 24. If during operation the pump 4 fails or its output is insufficient, the switch 17 is automatically closed to bring the pump 5 into operation; closing of the switch 32 also brings the pump 5 into operation at any engine speed regardless of the action of the switches 17, 24. Piston 21 is loaded by a spring 22 having an abutment 25 connected by an adjustable link 27 to a lever 28 which determines the idling position of the injection pump control rod. Adjustment of the link 27 varies the position of abutment 25 and hence the spring loading of piston 21 to vary the speed at which switch 24 is broken to switch the pump 5 off. In addition adjustment of the idling screw stop 29 to vary the position of the idling stop lever 28 varies the idling speed and correspondingly moves the piston 25 to vary the speed at which pump 5 is switched off.
Patent GB-1452602-A (GB)
Title: Power inverter
IPC: H02M7/527
Filed: 1973-01-25
Abstract: 1452602 Inverting: control of A.C. motors J L FEAVER 15 Jan 1974 [25 Jan 1973] 3776/73 Headings H2F and H2J An inverter comprises four controllable semi-conductor devices a... d arranged in a bridge and has drive means so connected that devices a and c are normally on and b and d normally off. An oscillator wf, integrator j and comparators k and l control the drive means so as to transpose conductive and non-conductive arms and thus produce a pulse-width controlled A.C. across load terminals e and f, having one or more pulses per half-cycle depending on the magnitude of output from oscillator wf. The load m may be an A.C. motor having feedback from a tacho-generator to provide speedcontrol. Resistor w may be included to control the reactive current via diodes g and h and may be connected to the D.C. supply via further diodes. In Fig. 3 (not shown) the output of a current transformer in series with the load m is rectified and used to inhibit the operation for up to a half cycle on overload.
Patent GB-161379-A (GB)
Title: Improvements relating to operating mechanism for railway crossing gates, barriers, and the like
IPC: B61L29/24
Filed: 1920-02-07
Abstract: 161,379. Saxby & Farmer, Ltd., and Kershaw, A. G. Feb. 7, 1920. Operating gates and barriers by toothed-gear mechanism; gate stops.-Crossing-gates, &c., are operated by a hand-wheel 4 and epicyclic gearing and an interlock is provided between this mechanism and the operating-means for the gate stops. The wheel 4 carries a pinion 11 in engagement with a fixed wheel 10 and a coaxial loose wheel 7 which differs slightly in the number of teeth, and is provided with an arm 8 connected with the gates by a rod 14. The crank-wheel spindle is provided with a locking-plate 6 recessed at 15 and the gear wheel 7 carries an interrupted flanged disc 9. A double pawl 18 pivoted at 19 and connected at 21 with the gate-stop mechanism has two sets of projections 16, 17 adapted to co-operate with the recess 15 and the flanged disc 9. When the gate stops are lowered, the pawl 18 rocks to release the disc 6 and handwheel to allow the gates to be operated. When the gates reach their extreme position the pawl rocks still farther and again locks the disc 6 and the gate-operating gear.
Patent GB-989980-A (GB)
Title: Automatic control of fractionating columns
IPC: B01D3/42
Filed: 1963-01-30
Abstract: 989,980. Fractionating columns; control systems. ESSO RESEARCH & ENGINEERING CO. Jan. 30, 1963 [Feb. 16, 1962], No. 3834/63. Heading B1B. In the separation of a mixture into two or more fractions using a fractionating column 1 provided with a condenser 6 for effecting complete condensation of the overhead vapour and a controller 14 for maintaining the pressure in the column at a predetermined constant value by adjusting the reflux-valve 13, the composition of the overhead product withdrawn through line 15 is maintained substantially constant by automatic regulation of the withdrawalvalve 16 in dependence on the composition of the feed mixture and its rate of supply to the column. The feed mixture flowing through line 2 is continuously analysed by analyser 29 while the feed rate is measured by flow controller 3; and the data is communicated, electrically or pneumatically, to analogue computer 30, which calculates the quantity of overhead product to be withdrawn through line 15 and transmits a signal to flow controller 17 which regulates valve 16. The analyser 29 may be based on infra-red, ultra-violet, dielectric constant, or refractive index measurement ; but a chromatographic analyser is preferably used. Condenser 6 may be of the air-fin type, or it may be of the shell and tube type wherein cooling-water passes through the tubes at a rate automatically controlled by valve 11. Part of the heavy fraction, withdrawn from the bottom of the column is passed to reboiler 21, and the remain'der is withdrawn as product through line 18. Specification 960,501 is referred to.
Patent GB-774933-A (GB)
Title: Disinfecting apparatus
IPC: A61L2/20
Filed: 1955-02-09
Abstract: 774,933. Disinfecting apparatus. WINKELS., T. W., WINKELS, A. G. D., WINKELS, H. B. T., and WINKELS, H. W. Feb. 9, 1955 [Feb. 18, 1954], No. 3877/55. Class 81(1) An apparatus for disinfecting rooms and the like by means of a fumigant, e.g. formaldehyde and subsequent neutralization, e.g. by ammonia, comprises evaporation vessels for the fumigant and neutralizer respectively which are provided with electrical heating means, preferably adapted to be directly connected to the lighting mains, and automatic control means such that when current is supplied to the apparatus the heaters are heated independently in succession, the heater of each vessel being automatically switched off after a certain heating time or when the vessel reaches a certain temperature. As shown the apparatus comprises an upper and lower compartment and situated in the upper compartment is the formaldehyde evaporating vessel 5 which rests on an electrical heating plate 7 and is provided on the bottom in fluid-tight manner with the temperature-sensitive member of the electrical temperature-regulating means 11, e.g. a conventional bi-metallic thermostat or thermocouple instrument which is so adjusted that upon reaching a predetermined temperature, for example, 150 or 200‹C. i.e. when the formaldehyde introduced into the vessel 5 and sufficient for the disinfection operation has been evaporated and the dry vessel becomes heated, the heating current is switched off. A time switch or a timing relay 12 is also provided which', after a predetermined evaporation period, switches off the apparatus. The ammonia evaporating vessel 14 is similar but smaller than the formaldehyde vessel and is situated in the lower compartment. A time switch 15 is provided for automatically switching on the electrical heater of the ammonia vessel when the formaldehyde evaporation has been completed and after the formaldehyde vapours have had a certain time in which to act on the room being disinfected. the ammonia heater being switched off by the temperature regulating means 17 or by a further timing relay. Vapour outlet pipes 6, 16 on the vessels are provided with bayonet or other connecting elements suitable for convenient jointing to tubing so that the point where the vapours issue into the room being disinfected can be at a desired distance from the housing 1. The compartments 3, 4 may be provided with flaps e.g. 18, 19 for ventilation' purposes.
Patent GB-1464595-A (GB)
Title: Internal combustion engine with means for compensating for air density variation
IPC: F02M7/28
Filed: 1974-01-28
Abstract: 1464595 Spray carburetters, air density compensation ACF INDUSTRIES INC 28 Jan 1974 [9 Feb 1973] 03897/74 Heading F1H The Specification is identical to that of (Specification 1464591) which describes the use of a bellows sensitive to changes in air density  or temperature to modify the air/fuel ratio of the mixture delivered by a carburetter and the operation of vacuum-powered devices associated with the engine. The claims of this Patent are directed to the use of the device to admit either increasing or decreasing quantities of air, as the absolute density of the ambient air decreases, to a suction passage leading from an engine to a suction operated device e.g. an accelerator pump or a vacuum operated ignition advance and retard mechanism.
Patent GB-870449-A (GB)
Title: Improvements in insulating cables with thermoplastic materials
Inventor: PALMER GARETH EDWARD JAMES
IPC: H01B13/10
Filed: 1957-02-05
Abstract: 870,449. Seaming non-metallic sheet materials. ASSOCIATED ELECTRICAL INDUSTRIES Ltd. Jan. 28, 1958 [Feb. 5, 1957], No. 3937/57. Class 42 (1). A method of insulating cables with thermoplastic material comprises introducing a length of resistance wire 3 between thermoplastic sheets 1, 2, passing an electric current through the wire and pressing the sheets together to form cable-receiving pockets. Sufficient current is passed through the wire to raise the temperature of the wire sufficiently high to enable the material of the sheets to become homogeneous in the vicinity of the wire. The pressure may be applied by a press 4 through thermal insulation 5 such as press-board. If a straight line joint is required the wire may be tensioned by means of a spring. Pressure may be applied by resting a bar of steel on the top of the work along the seam. The invention may be applied to the production of line joints of any desired contour.
Patent GB-231627-A (GB)
Title: Feeding mechanism for sewing machines
IPC: D05B27/22
Filed: 1924-02-15
Abstract: 231,627. Fairweather, W., (Singer Manufacturing Co.). Feb. 15, 1924. sewing - machines; feed by dogs.-A disc 36 integral with a feed eccentric 13 is radially adjustable upon a driving disc 25 to which it is secured bv screwed pins 34 passing through radial slots 37. The disc 25 carries a feedlift' eccentric 22. An adjusting disc 31 is placed between the discs 25, 36 and is pressed towards the latter by radially-split, dished spring discs 28. The adjusting disc has concentric slots 33 through which the pins 34 pass and two eccentric slots 35, one of which engages a bowl 39 on the disc 36. To alter the feed, a pin 44 is pressed inwards to engage one of two peripheral notches 32 in the adjusting disc and the main shaft is then turned to rotate the disc 36. The length of stitch is indicated by a gapped pointer on a scale attached to the .balance-wheel. The eccentric 13 rocks a, shaft 12, an arm 11 on which actuates the feed-bar 9. The eccentric 22 rocks a shaft 21, an L-shaped arm 19, 20 on which is universally connected to the feed-bar by a link 16 and a tension spring.
Patent GB-936211-A (GB)
Title: Improvements in or relating to telegraph relays
Inventor: DAIN GORDON TAYLOR
IPC: H03K17/60
Filed: 1961-02-02
Abstract: 936,211. Telegraph relay circuits. EXCHANGE TELEGRAPH CO. Ltd. Jan. 5, 1962 [Feb. 2, 1961], No. 3951/61. Class 40 (3). [Also in Group XL (c)] In a transistor relay circuit two transistors TR1, TR2, Fig. 1, are so interconnected, R2, R3, that when either is conducting the other is cutoff, and each collector is connected to the negative supply line via a coil of an instrument such as a teleprinter T. In operation, incoming signals on a line AB either make A positive with respect to B, in which case the left-hand transistor is cut-off and the right-hand one conducts, or they make A negative with respect to B in which the left-hand transistor conducts and the right-hand one is cut-off. A diode D1 by-passes the reverse emitter-base current of transistor TR1. In a modification (Fig. 2, not shown) the coupling loop R3 and the common emitter load R2 are omitted, the emitters being connected directly to the positive earth so that the two transistors function virtually independently of each other. In this arrangement in the absence of incoming signals both transistors are non-conductive. In a second modification, Fig. 3, of the circuit of Fig. 1, the input from lead A is via a diode W1 and a capacitor C1. In the arrangement the transistors TR1 and TR2 follow the input signal on line AB, as in Fig. 1, except that if B is positive with respect to A for a long period (of the order of 1 second) the capacitor C1 becomes charged and transistor TB1 is blocked so that the circuit reverts to the condition it would be in if B was negative with respect to A.
Patent GB-607550-A (GB)
Title: Improvements in receivers for angle modulated waves
IPC: H03D3/24
Filed: 1946-02-08
Abstract: 607,550. Frequency modulation. MARCONI'S WIRELESS TELEGRAPH CO., Ltd. Feb. 8, 1946, No. 3955. Convention date, Jan. 4, 1945. [Classes 40 (v) and 40 (vi)] A receiver for angle-modulated waves comprises two or more oscillators, the first of which is locked in step by the FM received waves, and the other or others are similarly locked by the output of the preceding oscillator. Each oscillator may operate at an integral sub-multiple of the frequency by which it is controlled. In Fig. 1, the last IF amplifier 1 has its anode circuit 3 connected to the inner grid of a heptode valve 9, of which the anode and outer control grid are back-coupled by the coil 17 and tuned circuit 5 so as to generate oscillations at the frequency of that circuit, chosen as a low sub-multiple, say one-half, of the mean IF. The output of the oscillator 9 is thus locked in step with the IF by the control applied to the inner grid and by magnetic coupling of the tuned circuit 3 to the coil 17 and tuned circuit 5. The output has half the frequency and half the frequency deviation of. the IF, and is fed to a second stage of frequency division constituted by a pentode valve 20. This has its first two grids back-coupled by coil 32 and tuned circuit 30 to generate oscillations at a further sub-multiple frequency locked in step by the output from the first stage 9, which is applied to the inner grid. These oscillations are fed to a frequency discriminator 40 which may be of the types disclosed in Specifications 489,094 or 603,437. The two stages of frequency division may be combined in a single heptode valve having the IF applied to the inner control grid, the screen grid back-coupled to a cathode coil to form the first oscillator, and the outer control grid back coupled to a tuned anode circuit to form the second oscillator, Fig. 2 (not shown). In a further modification, Fig. 3 (not shown), a hexode valve with an auxiliary rod anode is used, the rod anode being back-coupled to the inner control grid to form the first oscillator, and the anode back-coupled to the outer control grid to form the second. Specification 562,993 also is referred to.
Patent GB-232370-A (GB)
Title: Improvements in davits
IPC: B63B23/04
Filed: 1924-02-16
Abstract: 232,370. Pett, F. S. Feb. 16, 1924. No Patent granted (Sealing fee not paid). Davits.-In luffing-davits of the kind in which the davit arm is provided with a downwardly-extending worm sector meshing with a worm, the casing fully encloses the worm sector and worm, and extends upwards to, and terminates in bearing-bosses. The worm-sector e meshes with the worm g, which is operated by bevel-gear k, l, o, p, the latter gear being mounted on a spindle q which extends outside the casing d. Fast on the spindle q is a pinion p gearing with a pinion s on the shaft t, the latter gearing being employed when the davit is luffed with its load. The davit a is pivoted on the spindle b by a boss of substantially larger diameter and a tight joint is made against the side faces of this boss by bearing bosses c<1> on the heads of the frames e, sheet metal washers being interposed. The davit arms may be interconnected by a spar from which two boats can be suspended and the two davits of a pair can be interconnected bv pitch-chain gear or a rotary shaft and bevel wheels.
Patent GB-651275-A (GB)
Title: A process of producing ethyl alcohol
IPC: C07C29/04
Filed: 1948-02-11
Abstract: <PICT:0651275/IV (b)/1> Ethyl alcohol is continuously prepared by the hydration of ethylene by passing a mixture of ethylene and water vapour at elevated temperature and pressure into intimate contact with a catalyst bed made up of a solid porous support containing absorbed phosphoric acid, of a concentration of at least 70 per cent, the acid having been supplied to the support in a more dilute form and been concentrated in situ on the support.  The solid support for the phosphoric acid may be any strong, porous material having good absorptivity for aqueous phosphoric acid.  The preferred material is a calcined diatomaceous earth, preferably the product sold under the trade name "Celite".  The solid supporting material is impregnated with an aqueous solution of phosphoric acid, preferably of concentration between 55 and 65 per cent to form the catalyst bed which is then heated, preferably by recycling heated ethylene gas through the system under pressure until its temperature reaches 175-200 DEG  C.  Steam is then gradually mixed with the ethylene and the temperature is raised until when the desired operating ratio of steam to ethylene is established a temperature of 270-280 DEG  C. is reached.  The average temperature of the bed is controlled between 270 DEG  and 310 DEG  C., preferably between 290 DEG  and 300 DEG  C. In the Figure, various curves show how a given concentration of phosphoric acid may be attained at any given temperature by using one of the many combinations of pressure and water vapour-ethylene molecular ratio.  As the reaction progresses some phosphoric acid is lost from the bed and to maintain the efficiency of the catalyst it is desirable to add further amounts of phosphoric acid to the bed, the quantity added depending on the amount of ethyl alcohol formed. The ethylene used in the process may be obtained from the catalytic or thermal cracking of petroleum hydrocarbons.  If the ethylene is contaminated with acetylene the reactants should be copper-free and should be conducted to the catalyst bed out of contact with any copper surfaces to avoid the formation of cuprene.
Patent GB-686398-A (GB)
Title: Improvements in and relating to the lining of hollow articles
Inventor: BLAKSLEY JOHN OWEN
IPC: B32B27/00
Filed: 1950-02-17
Abstract: 686,398. Lined hollow-ware. IMPERIAL CHEMICAL INDUSTRIES, Ltd. Feb. 16, 1951  [Feb. 17, 1950], No. 4127/50. Class 66 In a process for lining hollow articles e.g. pipes, tubes and drums or like containers a collapsable tube or bag of an organic thermoplastic material e.g. polythene, chlorinated polythene, polyvinyl chloride, superpolyamides and superpolyesters and thermoplastic cellulose derivatives, is introduced into the cavity, maintained in an inflated condition and in contact with the walls of the cavity which are heated to a temperature above the softening temperature of the thermoplastic material. The collapsable bag or tube may be inflated before it is introduced into the cavity and its diameter is preferably not greater than that of the cavity.
Patent GB-179314-A (GB)
Title: Improvements in and relating to emergency brakes for vehicles
IPC: B60T1/14
Filed: 1921-02-04
Abstract: 179,314. Willis, N. E. Feb. 4, 1921. Skid.-In an emergency slipper brake, the slipper is supported by means of an axle clip or bracket and a hanger and stay arranged so that the axle, hanger, stay, and slipper-holding rope each take part of the strain. The hanger A is connected to the axle clip C and the stay A'. The hanger and stay are connected to the vehicle frame F bv bolts A<6> in slots A<2>. A radius-rod R, connected to the slipper S, is pivoted at the meeting point of the hanger and stay and bears against a stop P on an extension of the stay. The slipper S is adjustably connected to a jointed wire rope A<2> fastened to a spring-controlled plunger A<4> in a cylinder A<x> attached to the frame. Two slippers may be connected by a rod, to which is attached a rope A<5> for lifting them into inoperative position. The rope A<5> may be fastened to a quadrant L provided with a pinion L<1> gearing with a toothed quadrant L<3> provided with an operating-handle L<4>. The slipper makes the main contact with the road at the toe S<5> and consists of a metal casing into which are fitted blocks of wood, asbestos, &c. The upper face is curved so as to make a short contact with the wheel. According to the Provisional Specification, the slipper rope is attached to a boss or stud on the frame, and the slipper and its rope are held in inoperative position by pins which are adapted to be withdrawn by operating a lever.