baber/WOPTO huggingface dataset:
Patent GB-734777-A (GB)
Title: Improvements relating to mechanism for separating water from sand, gravel and such like solid material
IPC: B01D33/04
Filed: 1952-05-30
Abstract: 734,777. Gravity-separation apparatus; filters. HARDY & PADMORE, Ltd., and SOUTHALL, T. J. May 26, 1953 [May 30, 1952], No. 13738/52. Class 46. [Also in Group XXX] In a mechanism for separating water from sand, gravel and the like of the rotary bucket arm or. conveyer bucket type the perforated buckets are successively subjected to a positively-operated vibrating action during their elevation or movement for assisting in the separation of the water from the solid matter. An electrically-actuated vibratory device c mounted on a frame d supported by antivibration mountings on a tank b carries a rotating disc cl which co-operates with plates a3 bolted to radial arms al to vibrate buckets a2 supported by the arms. Where the buckets are provided on an endless conveyer the vibrator makes contact with the conveyer by means of a roller. The vibrator may alternatively be mechanically actuated, for instance by a rotary cam. Specification 716,317 is referred to.
Patent GB-731538-A (GB)
Title: Improvements in and relating to spill burner fuel supply systems
IPC: F02C9/16
Filed: 1952-05-30
Abstract: 731,538. Gas turbine plant; centrifugal governors. ALLEN, SONS & CO., Ltd., W. H., and SMITH, F. S. April 27, 1953 [May 30, 1952], No. 13778/52. Classes 57 and 110 (3). [Also in Group XI] A gas turbine fuel system for a spill burner comprises a safety or starting valve which can be set so that it has an initial opening and is adapted to open fully automatically under a predetermined starting fuel pressure acting thereon and means for by-passing a proportion of the fuel discharged from the fuel pressure source to control the fuel pressure at the burners. The gas turbine combustion chamber 1 having a spill burner 2 is fed with fuel by a positive displacement pump 4. The spill valve .6 is controlled by a speed governor 7. A closure member 2a operated by an overspeed mechanism may be provided. In the supply line 3 between the pump 4 and the burner 2, a combination control device 11 is provided. The control device 11, Fig. 2, comprises a casing 12 having a connection 13 to the pump discharge, a connection 14 to the pump suction and a connection 15 to the spill burner supply line 3. The connections 13 and 14 are separated by a relief valve 17. The loading of the spring 27 of the relief valve 17 is adjusted by means of a handwheel 23 and sleeve 22. The valve 17 has a hollow stem 18 having ports 20 which when open, allow fuel to pass from the pump discharge to the spill burners. The ports 20 are controlled by a spring-loaded plunger starting valve 21 housed in the relief valve stem 18. The initial adjustment of the valve 21 with respect to the ports 20 is adjusted by a screw 33 and nut 29. At starting, the fuel will enter the ports 20 and at a predetermined pressure act on the plunger 21, and raise it to fully open ports 20. To increase the speed of the turbine the hand wheel 23 is rotated to further increase the loading on the valve 17. Speed changes due to variations of load are controlled by the governor 7. If the hand wheel 23 is screwed down so that the load on the valve 17 is above the starting pressure range, the starting valve plunger 21 will close the ports 20 when the system is at rest. These ports cannot then be opened by the pressure of the fuel supply. The governor 7 may be as shown in Fig. 3, in which pivoted governor weights 35 connected by springs 36 and driven by a shaft 34 are arranged to actuate valve members 38. The valve seats are formed on a sleeve member 39 which is adjusted by a screw 40.
Patent GB-256730-A (GB)
Title: An improved guard for wood working machines
IPC: B27G21/00
Filed: 1925-05-27
Abstract: 256,730. Howlett, A. May 27, 1925. Guards.-A guard for vertical-spindle moulding-machines comprises two curved shields A', A<2>, adapted partially to surround the cutters B and to be independently adjustable vertically on the depending part C of an arm D rotatable about a vertical axis. The arm D is guided in and adjustably clamped to an arm G rigid with the housing I of a radial ball bearing K and thrust bearing L, supported on the end of a bent-over standard J adjustable on the bench N. A tension spring P normally holds the guard members A<1>, A<2> central, with the arm D pressed against one of two rubber cushions O on the standard J. One guard member, e.g. A<2>, is adjusted with its lower edge above the work S, which, in its passage past the cutters, presses against a roller R' on the part A<1> and rotates the guard. For machining work on the other face, the arm D is transferred to the other side of the standard J, and the vertical positions of the parts A<1>, A<2> are transposed. The rotational freedom of the guard permits its employment when machinmg curved work. According to the Provisional Specification, a plain bearing may replace the ball bearing; the outer shield subtends an angle of 120‹ and the inner 180‹ or more; and the work makes contacts with the guard-carrying member.
Patent GB-681933-A (GB)
Title: Improvements in or relating to high frequency circuit arrangements
Inventor: GREEN ERNEST
IPC: H03F3/54
Filed: 1950-06-02
Abstract: 681,933. Valve amplifying circuits; valve generating circuits. MARCONI'S WIRELESS TELEGRAPH CO., Ltd. Jan. 15, 1951 [June 2, 1950], No. 13877/50. Class 40 (vi). [Also in Group XL (b)]. The portion of a conductor feeding high-frequency current to or deriving current from two points required to be at the same potential is folded back on the portion connecting the two points so that the voltage drop in the connecting portion is compensated as a result of the mutual inductance between the portions. In an oscillator or amplifier the parallel connected valves V<SP>1</SP>, V<SP>2</SP> are arranged in push-pull with parallel connected valves V<SP>3</SP>, V<SP>4</SP> and are associated with a tuned circuit comprising an inductor L and variable capacitor K. The voltage drop in the conductors AB and CD is compensated by folding back the portions VW and XY of the connections to the inductor. The compensating voltage induced in the conductors AB and CD may be varied by means of adjustable bridges P.
Patent GB-751161-A (GB)
Title: Leak detector
IPC: G01M3/28
Filed: 1954-05-12
Abstract: 751,161. Locating punctures. CHIDIAC, G. C. May 12, 1954, No. 13897/54. Class 144 (1). [Also in Groups XI, XIX and XXVIII] A device for locating punctures comprises a mouthpiece 26 adapted to be applied to the source of a suspected leak to make a fluid-tight seal around the latter, a chamber 31 connected to the mouthpiece, and a piston 33 or flexible diaphragm in the chamber movable under the influence of any pressure rise due to a leakage, such movement providing an indication of leakage. The movable member 33, on displacement, may close an electric battery circuit to a lamp bulb 5. Alternatively the member 33 may have a rod 34 extending upwardly into a chamber 1, the chamber 1 being provided with windows and magnifying lenses whereby watch may be kept for any movement of the rod 34. The mouthpiece 26 is of resilient material and is detachable so that it may be replaced by a mouthpiece of different form, and the opposite end 14 of the device may be bored and slotted to serve as a tyre-valve core remover.
Patent GB-497549-A (GB)
Title: Improvements in or relating to the extrusion of moist plastic material
IPC: B28B3/20
Filed: 1938-05-10
Abstract: 497,549. Extruding plastic materials. BIRD MACHINE CO. May 10, 1938, No. 13952/37. Convention date, May 12, 1937. [Class 87 (ii)] Moist plastic material, such as clay, is extruded through a perforated die by a pair of feed rolls, a positive electric charge being impressed on said rolls and a negative charge on the die. By this means moisture is attracted to the die to lubricate it and the grip of the rolls on the clay is increased. The rolls 10, 11 may have smooth surfaces or may be provided with ribs 16. The die 18 contains a number of perforations 19 and is insulated from the rest of the machine by a rubber pad 27. Current is supplied to the rolls and the die by a generator 24. An additional cathode roll may be provided to assist in feeding clay to the nip of the rolls 10, 11. The extruded bodies are received on a conveyer 31. In a modification, Fig. 3, the feed rolls 40 are arranged side by side and feed the material vertically downwards through the die 41. The internal walls of the framework 45 may be lined with insulating-material to prevent adhesion of the clay. In order to resist attack due to acidity, the rolls are preferably made of hard lead or nickel while the die is of steel. Voltages between 20 and 120 may be employed. The invention is particularly applicable to clay containing less than 20 per cent moisture, but also to kieselguhr, cements, &c. Specification 456,353, [Group II], is referred to.
Patent GB-604369-A (GB)
Title: Potato planting machine
IPC: A01C9/00
Filed: 1946-05-17
Abstract: 604,369. Potato-planting machines. LIDDELL, G. May 17, 1946, No. 13957/45. [Class 6(i)] A potato-planting machine comprises a wheeled chassis 2 supporting an inclined tray 1 from which potatoes gravitate singly on to the surfaces of moving belts 13 and are thereby fed to revolving vertical worms 17 which feed them to the ground. The machine is arranged for three-row planting and is adapted to be towed by a tractor. A pair of front caster wheels 7 is provided and a pair of rear wheels 6 from which the belts 13 and worms 17 derive their motion. The front end of the tray can be raised by a screw 5 and the rear end is fitted with partitions which guide the potatoes on to the moving belts. Furrow-opening and closing tools 27 and 28 are provided, and the machine also carries a seat 29 for an operator.
Patent GB-565056-A (GB)
Title: Hydraulic pump or motor construction
IPC: F01B3/10
Filed: 1942-10-06
Abstract: 565,056. Liquidpressure engines. HAWLEY, J. B. Oct. 6, 1942,No. 14006. [Class 69 (ii)] [Also in Group XXVIII] In a hydraulic pump or motor of the swashplate type in which angular movements of the tilting plate are effected by sliding movements of a plunger, two flexible bands 95, 96 secured to flat surfaces on the tilting plate 94 and on the plunger 98a move over a curved portion 94a of the plate when the latter is moved. Specification 556,394 is referred to.
Patent GB-936854-A (GB)
Title: Improvements in or relating to voltage amplitude detection apparatus
Inventor: SHARP JOHN JOSHUA
IPC: H03K5/153
Filed: 1959-04-24
Abstract: 936,854. Valve pulse circuits. INTERNATIONAL COMPUTERS & TABULATORS Ltd. April 11, 1960 [April 24, 1959], No. 14034/59. Class 40 (6). A circuit for generating a signal only when the input waveform crosses zero immediately following a positive half-cycle, comprises an amplitudesensitive circuit 10 normally inoperative but arranged, when operative, to produce a signal when an input signal passes through a first voltage level and a second amplitude sensitive circuit 8 responsive to the input signal passing through a second voltage level to render operative the first amplitude sensitive circuit 10 so that an output signal is produced by circuit 10 when the input signal passes through a second voltage level prior to passing through the first voltage level. As described, the input signals from the reproducing head 4 take the form of single cycles of sine wave and are amplified at 5 and fed in anti-phase to identical multiar amplitude sensitive circuits 8, 10. The triode 17 in the amplitude sensitive circuit 10 is normally cut-off by the negative voltage at the cathode of cathode follower 13. The triode in the amplitude sensitive circuit 8 is normally conductive, the grid circuit diode being cut-off by grid current. When a negative half-cycle occurs in the waveform of winding 7, the diode in amplitude sensitive circuit 8 is rendered conductive, closing a feed-back loop so that the triode is regeneratively cut-off. The rise in anode voltage from amplitude sensitive circuit 8 is fed via a cathode follower 13 to cut-off diode 14 and render valve 17 conductive. Diode 26 is rendered conductive by next negative half-cycle from winding 9, closing the feed, back loop via transformer 23 so that valve 17 is regeneratively cut-off, feeding an output signal via cathode follower 11 to line 12. The rise in voltage at the anode of valve 17 is fed via a cathode follower to cut-off diode 16 and restore the system to its original state. Amplitude sensitive circuits other than the multiar may be employed in which case it may be necessary to replace cathode followers 13, 15 by inverters.
Patent GB-980079-A (GB)
Title: Improvements in apparatus for pressing fodder cakes
IPC: B30B11/20
Filed: 1961-04-18
Abstract: 980,079. Apparatus for compacting and pelleting hay. MASSEY-FERGUSON SERVICES N.V. April 18, 1961 [May 18, 1960], No, 14035/61. Heading A2B. In a machine for forming pellets of hay such as is described and claimed in Specification 939,759, at least one wall of each of the dies is hinged to provide a die of selectively variable taper. The dies have thin partitions 53, Fig. 5, with sharp inner edges 54 and partitions 55 having portions 58, Fig, 7, movable about pins 56 in response to the air or other fluid pressure in diaphragm members 59 supplied from a common outer ring (not shown). Alternatively, the moveable partitions are actuated by cams 90, Fig. 6, operated by a lever 91 against a spring 92. The helical conveyer which feeds the hay in a thoroughly lacerated and shredded condition to the compacting rollers 43, has pitched endflanges 40, Fig. 5. The pellets produced are broken off at any desired length on adjustable impact elements 52. A spraying unit (not shown) may be provided above the hopper 34 for supplying moisture to the hay to be pressed; this forms the subjectmatter of Specification 980,080.
Patent GB-260890-A (GB)
Title: Improvements in or relating to the manufacture of wheels
IPC: B60B1/00
Filed: 1926-06-03
Abstract: 260,890. Austin, C. A. June 3, 1926. Suspension-spoke wheels.-Wire spokes after assemblage in the hub and rim are tensioned in the operation of shaping the rim from a flat cylindrical form 3, Fig. 1, to the desired cross-sectional profile. The spokes, which are preferably of the double form shown in Fig. 7, are threaded through holes in the rim 3, the inner ends being bent back to L-shape and fitted in slots 2 in the .ends of the hub 1. Liners 5 may be fitted under the spoke ends, the latter being locked by washers 7 and a nut 8 screwed on the sleeve 6.
Patent GB-1190682-A (GB)
Title: Concentration of Aqueous Formaldehyde Solutions.
IPC: C07C47/04
Filed: 1968-03-22
Abstract: 1,190,682. Concentrating aqueous formaldehyde solutions. SOC. ITALIANA RESINE S.p.A. 22 March, 1968 [23 March, 1967], No. 14084/68. Heading C2C. Aqueous formaldehyde solutions are concentrated by distillation, wherein the concentration is effected under reduced pressure in one or more distillation steps, the distillation temperature of each stage being below the stability temperature of the concentrated aqueous solution formed therein, i.e. the temperature below which solid polyoxymethylenes precipitate and the concentrated solution being subjected to said distillation temperature for a period shorter than that required for the solution to become turbid or for solid bodies to appear therein, and wherein the concentrated aqueous solution of each stage, after formation, is subjected to an ageing period at a temperature exceeding the stability temperature of the concentrated solution. During each evaporation step the temperature is preferably maintained below 100‹ C. and particularly 5‹ C. below the stability temperature of the concentrated solution produced in each step. The preferred ageing temperature exceeds the stability temperature by at least 5‹ C. while the ageing period should be between 0À5 and 30 minutes. Thin film evaporators or molecular distillation apparatus is particularly suitable.
Patent GB-457737-A (GB)
Title: Improvements in or relating to radio range-finding and like systems
IPC: G01S1/02
Filed: 1936-05-18
Abstract: 457,737. Indicating proximity of earth or other bodies. TELEFUNKEN GES. FUR DRAHTLOSE TELEGRAPHIE, 12, Hallesches Ufer, Berlin. May 18, 1936, No. 14101. Convention date, May 18, 1935. Drawings to Specification. [Class 37] [See also Group XL] The known method of ascertaining the distance of a remote object, such as an aeroplane, by observing the nodes on the standing- wave system set up between outgoing and reflected waves is characterized by the use of a directed beam of short-wave radiation modulated by a longer wave. Observations are taken on the nodes of the modulation frequency, instead of on the short-wave carrier, so as to allow of a greater accuracy. The modulation frequency is selected to give a phase-difference of either 180 or 360‹ and the resulting maxima or minima are measured either by a receiver placed near the transmitter, or by observing their effect upon the grid-current or grid potential of the transmitting valve.
Patent GB-450898-A (GB)
Title: Improvements in or relating to motor vehicles
IPC: B61C17/12
Filed: 1935-05-14
Abstract: 450,898. Controlling motor vehicles. SCHWEIZERISCHE LOKOMOTIV- & MASCHINENFABRIK, Winterthur, Switzerland. May 14, 1935, No. 14110. Convention date, May 14, 1934. [Class 79 (v)] A safety controlling-device for vehicles having driving gear which is either hydraulic or is controlled by fluid pressure, interrupts the power drive to the axles by releasing the fluid pressure in the driving or controlling gear. The safety device may be a " deadman control 3, an emergency switch 17, an automatic train control device 18, or an emergency brake control 19 or 20. In the construction shown, the vehicle is driven through change - speed gearing comprising clutches 16 engaged by fluid pressure acting on pistons 14. When the driving gear is to be engaged a distributing valve 11 is operated and a pump 9 pumps oil from a tank 13 through a pipe 10 and the valve 11 to the selected piston 14 which engages the desired gear. If one of the safety switches 3 or 17 ... 20 is closed a solenoid 5 is energized and acts through a fluid-pressure relay 6, 7 to open a byepass valve 8 which connects pipe 10 to the tank 13 and releases the pressure on piston 14 so that the driving gear is disengaged. Alternatively, the valve 8 may be dispensed with, the relay 6, 7 being arranged to close a valve in the pipe 10, the oil from the pump then being delivered through a back-pressure valve 21. The safety device, instead of acting on the fluid-pressure controlling system 9, 14 may act on the hydraulic circuit of a F÷ttinger or a piston-type driving gear. The prime mover may be an internal-combustion engine or an electric motor.
Patent GB-987979-A (GB)
Title: Improvements in or relating to electric voltage detectors
IPC: G01R19/155
Filed: 1961-04-19
Abstract: 987,979. Voltage detectors. INTERNATIONALE PATENT-UND LIZENZ-ANSTALT. April 19, 1961 [April 19, 1960; May 3, 1960(2); May 17, 1960], No. 14125/61. Heading G1U. [Also in Division H1] A voltage detector comprises a part annular shaped discharge tube indicator 2 in a recess 1a of a housing 1, the recess being lined with cork, plastics material or foamed rubber 5, the lamp 2, liner and a mirror 4 being embedded in transparent synthetic resin 5a. A light diffuser is formed by a lens 3. An insulating rod 9, carrying the housing 1, has a nose piece 10 carrying a spring biased axially movable contact 12 the rear end 12d of which forms with a fixed contact 13 an adjustable spark gap in series with tube 2. A checking terminal 8 is connected to contact 13 and the other side of the tube 2 is series connected with a tubular resistor 17 and a high resistance electrode 20 housed in the rod 9 and an extension 19 thereof. The extension 19 telescopes into a handle 22 which carries marks to indicate the limiting position for the user's hands which couple the electrode 20 capacitatively to earth. The amount of telescoping is varied according to the voltage under test, marks on the tube indicating this voltage. In a further embodiment, (Fig. 4 not shown) the detector contact is carried at the end of an extension insulating tube housing further resistors which series connect the detector contact to the lamp 2. The elements 17, 20 may be rods of foamed plastics material containing graphite particles or be in the form of resistive coatings applied to the interiors of the rods 9, 19. Specification 987,980 is referred to.
Patent GB-874443-A (GB)
Title: Improvements in or relating to head clamps for stunning pens
IPC: A22B1/00
Filed: 1958-05-03
Abstract: 874,443. Animal holding appliances. BILLINGTON, A., and BILLINGTON, R., [trading as BILLINGTON BROS.]. July 31, 1959 [May 3, 1958], No. 14202/58. Class 81 (2). A device for gripping an animal's neck comprises two rods 14, 14 slidable in pivoted guides 11, 11 and pivoted to a plate 17 so that when the latter is raised by a handle 20 the lower ends of the rods are brought closer together. Projecting lugs on the plate 17 run in a guide-way formed by the gap between two vertical plates 25 and the whole assembly is mounted on two parallel transverse members 10, which may be pivoted to a wall bracket 28 so as to be readily moved out of position. Specification 874,442 is referred to.
Patent GB-669534-A (GB)
Title: Improvements in or relating to electric pulse selecting circuits
Inventor: REEVES ALEC HARLEY
IPC: H04J3/04
Filed: 1947-05-28
Abstract: 669,534. Discharge apparatus. STANDARD TELEPHONES & CABLES, Ltd. May 28, 1948 [May 28, 1947], No. 14203/47. Class 39(i). [Also in Groups XL (b) and XL (c)] For selecting and demodulating the various interlaced channel pulse trains in a multiplex communication system a cold cathode gas discharge tube of the type described in Specification 639,827 is provided, having an anode 133, Figs. 2 and 3, and an array of pairs of cathodes 134A, 135A ... 134N, 135N, the gaps of each pair being of unequal length, as shown. The anode 133 is connected to a source 138 of potential of insufficient magnitude to initiate any discharges and the input pulse train is applied to the anode through condenser 144, a synchronizing pulse having been separated therefrom by circuit 52 to trigger a synchronizing pulse generator 54. The pulses from 54 are applied to the first cathode pair 134A, 135A. The cathode pairs are connected to earth through condensers 141A ... 141N shunted by resistances 140A ... 140N respectively and by channel demodulators 142A ... 142N. Ionization control electrodes such as cathode 146 energized by source 147 through variable resistance 148, and providing a continuous discharge, may be provided as described in Specifications 639,827 and 660,253. The synchronizing pulse causes a discharge between cathode 134A and anode 133 and the.next channel pulse on the anode causes cathodes 135A and 134B to strike. The rapid increase of cathode current through resistance 140A charges the condenser 141A and extinguishes the discharge to cathodes 134A, 135A in the manner of a squegging circuit. When the second channel pulse is applied to the anode, cathodes 135B. and the next short-gap cathode electrode fire and so on until the last channel pulse extinguishes the discharges to the last cathode pair 134N, 135N.