baber/WOPTO huggingface dataset:
Patent GB-1121553-A (GB)
Title: Liquid manometer
IPC: G01L7/18
Filed: 1965-06-19
Abstract: 1,121,553. Liquid-level pressure gauges. N.J. HASSETT. June 17, 1966 [June 19, 1965], No.26027/65. Heading G1L. A manometer for measuring differential pressure head within a given range embodies a horizontal tube which serves as a constant level reservoir for the measuring liquid and provides an invariant zero reference level for the liquid column balancing the differential pressure, the nature of the measuring liquid and the dimensions of the manometer being such that within the given range, the lower end of the liquid column rests in the horizontal reservoir tube and its upper end in a non-horizontal measurement tube connecting with the horizontal reservoir tube, thus enabling the differential pressure to be read by a fixed scale along the measurement tube. The reservoir tube may be coiled in the horizontal plane and it may be of uniform bore different from that of the measurement tube. Two measurement tubes may communicate through a common horizontal reservoir tube; the measurement tubes may be of the same bore set parallel side by side with a common scale. The inclination of the measurement tubes may be adjustable and horizontal and vertical alignment means may be provided.
Patent GB-854782-A (GB)
Title: Improvements in or relating to electrically operated tumbling grinding mills
IPC: B02C17/00
Filed: 1957-08-19
Abstract: 854,782. Automatic control systems for grinding-mills; magnetic couplings. UNION CORPORATION Ltd. Aug. 19, 1957 [Aug. 31, 1956; Feb. 19, 1957], No. 26069/57. Classes 35 and 38 (4). A method of controlling a tumbling grinding- mill comprises the steps of generating a control signal responsive to variations of the mill motor input power, modifying the control signal and utilizing it for a control operation on the mill to keep the motor input power at a maximum. The control is directed to obtaining optimum operation by varying either the motor speed or the feed of grinding mediums to the mill, too much or too little resulting in a reduction of input power. The mill motor current is monitored by transformer 1, Fig. 2, the rectified output charging capacitor 17. Double triode 18 forms with transformer 20 an A.C. bridge circuit for comparing the P.D. across capacitor 17 with a variable reference voltage from potentiometer 10. The output is amplified at 30 and applied to phase-sensitive power amplifier 32, 33 which in turn energizes two-phase motor 8. This drives through gearing the slotted rotor 43, Fig. 3, of a magnetic clutch. Mounted on bearings on the rotor spindle are pairs of arms, such as 52, 53, which carry permanent magnets 56, 57 and 58, 59 adjacent the rotor rim. Rotation of disc 43 drags the arms through a small angle until the movement is restrained by one or the other, depending on the direction of rotation, being engaged by lever arm 69, pivoted at 74. This lever rocks, operating one or the other of mercury switches 77, 78. A follow-up control is provided by motor 8 also varying the setting of potentiometer 10 in a sense such that the reference voltage tend to balance the voltage of capacitor 17. Operation of switch 77 denotes a decrease of input power and, depending whether the mill is being operated just above or just below the optimum point, the feeder motor is stopped or started. In Fig. 5 thyratron 80 anode circuit is switched periodically by timer 92. If switch 77 is closed when the anode circuit is complete the valve conducts and energizes relay 91 to control the feeder motor as required. A further mode of operation utilizes timer 92 to give a time between the control pulses sufficient for the operative condition to alternate between points just below and just above the optimum. In another embodiment (Fig. 7, not shown) the switches operated by the magnetic clutch are arranged as a reversing switch between an amplifier output lead and one winding of a twophase motor, so that the feeder motor is subject to continuous and reversible control.
Patent GB-1096876-A (GB)
Title: Centrifugal waste-water pump
IPC: F04D29/22
Filed: 1965-06-21
Abstract: 1,096,876. Centrifugal pumps. FELUWA SCHLESIGER & CO. KOMM. GES. June 21, 1965 [July 1, 1964], No. 26070/65. Heading F1C. A centrifugal sewage pump comprises an annular cutter 11 which at least partially encircles the inlet 8, a sector 15 of the cutter adjacent the discharge end of the volute 1 being either omitted entirely or, as shown, of reduced height. The remainder of the cutter 11 increases in height to provide a helical edge 12 which preferably extends up to the back plate of the impeller 2, the edge thereafter falling away steeply, for example vertically as shown at 14. Stones and other small solids pass through the pump while large fibrous and other solid matter which would otherwise clog the pump are shredded by a shearing action exerted by the back plate of the impeller in co-operation with the cutter 11. The cutter 11 may be detachable. The cutwater of the volute is made sharp so as to remove any shreds of material clinging to the outer edges of the impeller vanes 3, 4.
Patent GB-448747-A (GB)
Title: Improvements in and relating to ironing or pressing machines
IPC: D06F71/02
Filed: 1935-09-20
Abstract: 448,747. Ironing-presses. BRITISH THOMSON-HOUSTON CO., Ltd., Crown House, Aldwych, London. Sept. 20, 1935, No. 26115. Convention date, Sept. 25, 1934. [Class 138 (ii)] The press is operated in three stages; firstly the carriage 19 supporting the head 25 is swung about a pivot 21 to cause the head and buck 15 to register, the head is then lowered into light engagement with the buck by manipulation of a lever 41 counterclockwise and finally the full pressure is applied by manipulation of another lever 56 counterclockwise. Operation of the lever 56 is non-effective until the lever 41 has been operated. The head is resiliently secured to the arm 26 of the carriage by spring-pressed bolts 27 and is moved away from the arm to close the press and apply the pressure. The lever 41 rotates a shaft 35 mounted in the arm 26 and to which are fixed arms 37 of which the forward ends engage in notches in a block 39 slidably mounted in the arm 26 and bearing at its lower end on a plate 57 secured to the upper surface of the head whereby the latter is forced away from the arm 26. The lever 56 rotates a cam shaft 42 mounted in the block 39 and carrying a roller cam 47 acting on the plate 57. Initial rotation of the cam shaft locks the block 39 to its stationary guide 40 on the arm 26 through a pawl mechanism 49 which can be operated only after the block has been moved downward in its stationary guide a predetermined distance by the operation of the first lever 41. The forward portion of the lower end of the carriage is notched and one limb of the notch is cut away whereby, on the initial swinging of the carriage about the pivot 21, a stationary pin 24 enters the cut away portion of the notch. On drawing the carriage forward, during which time a slot 22 in the carriage traverses the pivot pin 21, the pin 24 enters the rear end 23 of the notch and holds the carriage locked. Drainage of the buck is effected by a pipe 17 into a removable cylindrical trough 18.
Patent GB-962849-A (GB)
Title: Hydraulic actuator
IPC: F15B15/06
Filed: 1962-07-09
Abstract: 962,849. Hydraulic actuators. GENERAL PRECISION Inc. July 9, 1962 [Aug. 17, 1961], No. 26304/62. Heading F1P. [Also in Division F2] A double-acting hydraulic actuator comprises a cylinder 10 housing two relatively-movable pistons 74, 78, sealing rings 28, 30 on the two pistons, a mechanism-actuating member 54 disposed between the ends of the outwardlyextending respective piston rods 76, 80 in a manner to limit movement of the pistons towards one another and to space them apart a predetermined distance, and vent means leading from the space between the pistons to prevent a build-up of fluid pressure therein. As shown, the piston rod 76 of the piston 74 is disposed within the bore of the piston rod 80 of the piston 78, and the member 54 is in the form of a ball on the upper end of a link 44 connected to the mechanism which is to be actuated. The venting of the space between the pistons through passages 90, 92 results in the rings 28, 30 always being urged against the inner shoulders 40, 42 of their grooves. The rings 28, 30 may be formed of deformable material and provided with backing rings for bearing against the shoulders 40, 42 of the piston.
Patent GB-368687-A (GB)
Title: Improvements in and relating to electric regulating systems
IPC: H02P9/18
Filed: 1930-09-03
Abstract: 368,687. Automatic regulation. BRITISH THOMSON-HOUSTON CO., Ltd., Crown House, Aldwych, London.-(Assignees of Hall, E. H. ; 32, Greenhill Avenue, Springfield, Pennsylvania, U.S.A.) Sept. 3, 1930, No. 26316. Convention date, Sept. 11, 1929. Void [Published under Sect. 91 of the Acts]. [Class 38 (iv).] Automatic regulating apparatus in which changes in the regulated quantity are magnified comprises a reactance 13 with a saturating winding 7 responsive, for example, to current conditions in a D.C. circuit 1, and two windings 8, 9 in series with a relay winding 10 supplied from a constant voltage A.C. source. An inductance 15 in series with a second relay winding 14 has the same reactance as the windings 8, 9 under normal conditions. The balance relay controlled by the windings 10, 14 governs a reversible motor 21 regulating the strength of the field of the D.C. generator 3.
Patent GB-682231-A (GB)
Title: Improvements in refrigerating counters
IPC: A47F3/04
Filed: 1949-09-30
Abstract: 682,231. Refrigerators. RYDIN, M. E. Sept. 30, 1949, No. 26329/51. Divided out of 682,186. Drawings to Specification. Class 29 The subject-matter of this Specification is identical with that described in Specification 682,186 but the claims differ. It is also stated that closed, transparent slidable doors may be provided for the open side of the hood.
Patent GB-705330-A (GB)
Title: Improvements relating to electromagnetic telephone instruments
Inventor: BROWN RONALD ERNEST CHARLES
IPC: H04R11/06
Filed: 1951-11-09
Abstract: 705,330. Sound receiving and transmitting devices. SIEMENS BROS & CO., Ltd. Nov. 7, 1952 [Nov. 9, 1951], No. 26338/51. Class 40 (4) In a telephone instrument of the type employing an annular armature, the magnetic system is so disposed that there is no magnetic flux in the armature due to the permanent magnet. Pole shoes 2, 3 on each side of an annular permanent magnet 1 have pole pieces 4, 5, 6, 7 defining an air gap in which a rim-clamped annular armature 8 supporting an acoustic diaphragm 14 operates. The acoustic diaphragm which may have stiffening ribs 15 is cemented to the inner circumference of the armature and the outer edge of the armature is clamped by screws 16 between two resilient spacers 11 and 12. The screws 16 pass through cut away portions 22, Fig. 2, in the edge of the armature which may be so dimensioned as to give a desired compliance. The operating coils 9, 10 are located between pole-pieces 4, 5 and 6, 7 respectively, but in other embodiments, Figs. 3-5 (not shown), they are located either between a single polepiece and the spacer or in an annular recess in the permanent magnet itself. These further embodiments also disclose the employment of a permanent magnet on each side of the armature by means of which the rim is clamped. The reduction of compliance thereby introduced is compensated by reducing the thickness of the armature in the area between the magnet and the air gap or by drilling holes at intervals. The manner of connecting the coils to the insulated terminals 20 in the outer casing is also described.
Patent GB-1262768-A (GB)
Title: Improvements in electrical inverting arrangements
IPC: H02H3/04
Filed: 1969-05-23
Abstract: 1,262,768. Protecting inverters. GENERAL ELECTRIC CO. 23 May, 1969 [31 May, 1968], No. 26425/69. Headings H2F and H2K. A thyristor inverter (particularly for parallel operation) is provided with a switch SWA arranged to isolate the load in the event of commutation failure. The inverter (Fig. 2) comprises two 3-phase bridges of thyristors 21 ... 26<SP>1</SP> feeding the primary windings 31p ... 33p of an output transformer via commutating interval current limiting reactors 27 ... 29<SP>1</SP>. The thyristors 21 ... 26<SP>1</SP> are triggered sequentially, control of output voltage being obtained by variation the triggering time of a slave thyristor (e.g. 21<SP>1</SP>) relative to amasterthyristor(21). Silver fuses 35, 36 are arranged to blow following a single commutation failure, blowing of a single fuse being detected at 37 and arranged to control a thyristor 47 which feeds a signal to control unit 80 (Fig. 3A) to open switching devices SWA ... SWC in the load circuit. Load-isolating switch.-Thyristors 51, 42 are arranged to be normally conductive so as to connect the output line 18a of the inverter to the load circuit 41. In the event of a fuse blowing due to commutation failure, the triggering pulses for the main thyristors 51, 52 are withdrawn and thyristors 73, 74 are turned on so that the commutation circuits 71 ... 76 rapidly turn off the main thyristors 51, 52. Auxiliary thyristors 63, 64 are also turned on interposing a resistor 61 in the load circuit. If the excess current as monitored by transformer 55 continues for more than three seconds (as determined by a time delay in unit 80, the triggering pulses are withdrawn from thyristors 63, 64, opening the load circuit. Thyristors 63, 64 may be replaced by a mechanical circuit breaker. Fig. 3B (not shown) relates to a logic circuit for controlling the starting and tripping of the inverter.
Patent GB-1039863-A (GB)
Title: Reinforced fibrous mat
Inventor: STEWART DAVID SAMUEL
IPC: D04H13/00
Filed: 1963-07-03
Abstract: 1,039,863. Laminates. REGINA GLASS FIBRE Ltd. June 17, 1964 [July 3, 1963], No. 26443/63. Heading B5N. A flexible reinforced mat is made by continuously producing a layer of randomly disposed glass fibres, continuously laying a woven fibrous cloth on the glass fibre layer and continuously laying a second layer of randomly disposed glass fibres on the woven fibrous cloth, impregnating the mat so formed with a bonding agent, the bonding agent, when it is a thermosetting resin comprising not more than 30% by weight of the finished product, and heating the mat to set the bonding agent. The woven fibrous mat may be of glass fibre, or of cotton or other natural or synthetic fibre or yarn. The bonding agent may be a melamine- or ureaformaldehyde, polystyrene, polyvinyl acetate, an acrylic resin or a polyester resin.
Patent GB-708811-A (GB)
Title: Navigational computer of the slide rule type
IPC: G06G1/12
Filed: 1950-10-30
Abstract: 708,811. Calculating-apparatus. BATORI, O. E. Oct. 30, 1950, No. 26450/50. Class 106 (1) A logarithmic device for speed, time and distance calculations comprises relatively rotatable discs 1 and 6 bearing co-operating distance and time scales A, and an outer disc 7 secured to the base disc 1 and with an aperture 10 and index SP for reading an inner speed scale B on the disc 6. The device shown is for air navigational purposes and has additional scales for correcting indicated air-speed for height, taking into account air density and compressibility, and compression temperature rise at the thermometer. In order to correct indicated air-speed for height, a height scale D and a co-operating temperature scale C are marked on the discs 7 and 6. These scales are calculated from a formula taking into account compression of the air at the air-speed indicator, in addition to the main factors of pressure and temperature at the flying height in terms of which the scales are marked. To use these scales, the disc 6 is adjusted so that the indicated temperature on scale C coincides with the indicated pressure on scale D, whereupon true and indicated air-speeds are shown against one another by the scales A. To correct this speed value further for compression error in the indicated temperature, a speed scale E is marked on the disc 6 ; the zero of this scale is positioned against the previously computed speed on scale A of the disc 1, whereupon the further corrected speed can be read off the scale A against the appropriate speed of scale E. Additional scales are also marked :- (1) height and temperature scales G and H on discs 6 and 7 for correcting indicated temperature for height, and (2) a density altitude scale F on the disc 7 read against an index DN on the disc 6 after setting the height and temperature scales C, D. The disc 6 rotates on a spacer disc 8 clamped between the discs 1 and 7 which are secured together by a nut and bolt 9. Slots 13 cut in the disc 8 provide spring fingers 14 frictionally engaging the disc 6, and concentricity adjustment is provided by a clearance 12 between a sleeve of the clamping nut and the central aperture of the disc 8. Specification 708,893 is referred to.
Patent GB-639652-A (GB)
Title: Improvements in the methods for eliminating carbon monoxide from gaseous mixtures
IPC: C01B3/52
Filed: 1945-10-10
Abstract: In the elimination of carbon monoxide from gaseous mixtures with the production of hydrogen by two stages of catalytic reaction with steam separated by a washing step, the first stage catalyst is relatively less active but little sensitive to sulphur and is employed with a small amount of steam while the second stage catalyst is more active but more sensitive to sulphur and is used at a temperature lower than that of the first stage. The first stage may employ reducible iron oxide at a temperature of 470-500 DEG  C., or ferro-chromium at 450 DEG  C., and the second stage a copper oxide catalyst at 270-300 DEG C.  The process may be conducted under pressure.  In operation heat is conserved by heat exchange and steam required for the conversion is obtained by heating water by the gases issuing from the conversion step.  The washing is effected by water under pressure or alkali.
Patent GB-518140-A (GB)
Title: Improvements in stays for mirrors and the like
IPC: A47G1/24
Filed: 1938-09-10
Abstract: 518,140. Stays for hinged articles. SPEGELSTEIN, S., and COOK, C. H. Sept. 10, 1938, No. 26498. [Class 65 (i)] A jointed folding stay for a mirror &c. 1 comprises 4, 5 pivoted at 7 to the mirror and at 8 to the fixed frame 3, at least one of said connection being adapted to adjust itself in a direction transverse to the axis of the pivot. In one form, the pivot 8 is carried by a bar 10 slidably mounted in a bracket 11. The joint 6. between the arms 4, 5 may comprise friction elements and one of them may have a flange 19 to limit the relative turning movement of the arms on the pivot 18. A similar stop 20 for the arm 5 may be provided on the slide 10. The arm 5 may be forked to accommodate the arm 4 when the arms are folded.
Patent GB-758245-A (GB)
Title: Welding process and apparatus
IPC: B23K9/02
Filed: 1952-10-22
Abstract: 758,245. Welding by fusion. GRAVER TANK & MFG. CO., Inc. Oct. 22,1952 [Oct. 24, 1951], No. 26566/52. Class 83 (4). In a method of arc welding horizontal seams 10, Fig. 3, of curved vertical tank shell plates 11, 11A a flexible strip 34 is pressed against the plates to form a trough for flux 19 covering the welding arc. The apparatus is substantially the same as that described in copending Specification 758,244 in which welding tools 12 feeding electrode wire 16 to the welding zone are supported on frames 25 suspended on each side of the tank plates from a carriage (not shown) running along the top edge of the plates. The flexible strip 34 comprises an endless band running on rollers 31, Fig. 4, and retained in engagement with the plates by spring-loaded rollers 38. A shelf 35 supported below the belt by arms 36 maintains the belt substantially flat and a pivoted mounting 33 for a member 32 carrying the rollers 31 permits the belt to take up the angle of the tank wall. Flux 19 is supplied from a main hopper 27 (not shown) in the carriage through a pipe 28 to a small hopper 29 on the frame 25 from which the flux is fed to the belts 34 through pipes 30. In operation a weld is made on one side or on both sides simultaneously, flux being supplied on both sides in each case. U.S.A. Specification 2,145,009 also is referred to. Reference has been directed by the Comptroller to Specification 669,890.
Patent GB-1532166-A (GB)
Title: Micro-wave hygrometer
IPC: G01N22/04
Filed: 1977-06-24
Abstract: 1532166 Micro-wave hygrometer TDK ELECTRONICS CO Ltd 24 June 1977 [7 July 1976] 26576/77 Heading G1N A micro-wave hygrometer comprises a shield housing 20 having a hole of such dimensions so as to allow flow of air but prevent radiation of microwave energy from the housing, a dielectric resonator 23 mounted within the housing at a portion thereof at which, in use, the electric field is weak and a pair of antenae 27, one for transmitting microwave energy to the resonator 23 and the other for receiving the alternated micro-wave energy therefrom. As shown the shield housing comprises two end-plates and mesh side walls providing a plurality of holes. Depending upon which mode is used for exciting the resonator it may be mounted, as shown, by a pillar 24 or by equispaced legs about its periphery. Fig. 4, (not shown) or by the end-plates of the housing Fig. 7A, (not shown). The housing may be cylindrical and be partly or wholly mesh Fig. 4, 6, respectively, (not shown).
Patent GB-297360-A (GB)
IPC: B60L15/32
Filed: 1928-09-17
Abstract: 297,360. Somajni, G. Sept. 19, 1927, [Convention date]. Rotary machines.-In a remote control system for selectively positioning one or a plurality of devices, such as drum controllers, each controller is driven by a step-by-step electric motor having independent windings one or other of which is adapted to be excited by impulses of opposite polarity to cause rotation in one or the other direction. As shown, a drum controller C<11> is driven through gearing 6, 6<1> by a motor C<1>, the field of which comprises a permanent magnet or an electromagnet energized from a battery 4<1>. The armature 3 is provided with two independent windings 1<1>, 1<11>and 2<1>, 2<11> each having one end connected to a common slip-ring 0 and the other ends respectively connected to rings 1, 2 and the arrangement is such that normally the windings lie in proximity to the pole pieces of the field magnet. The rings are connected by line wires O<0>, 1<0>, 2<0> to a control drum C having an upper set of contacts CF adapted to transmit alternately impulses of opposite polarity from a battery B to one, or other of the windings on the armature 3 according to the direction of rotation of the controller C. For example, rotation of the controller in the direction of the arrow F causes the transmission of impulses over the line wires O<0>, 1<0> to the winding 1<1>, 1<11>. In the arrangement shown, each impulse rotates the armature 180‹, but additional windings may be provided to facilitate stepping through a smaller arc. Alternatively a multipolar field magnet system may be provided. Rotation of the controller in the reverse direction operates a change-over-switch 7 to select the line 2<0> instead of the line 1<0> and thereby cause the transmission of impulses to the winding 2<1>, 2<11> and consequently reverse the direction of motion of the motor. The switch 7 is controlled by a ratchet wheel 7<0> on the shaft of the controller which co-operates with hinged pawls 7<1>, 7<11> in such a manner that the initial movement of the ratchet upon reversal operates the switch but continued movement in the same direction has no effect. The motor 3 is correctly positioned by a locking disc 5.