baber/WOPTO huggingface dataset:
Patent GB-575823-A (GB)
Title: Improvements in and relating to electric switches with electrodynamically-reinforcedcontact
IPC: H01H1/54
Filed: 1944-04-13
Abstract: 575,823. Electromagnetic switches; thermal switches. BRITISH THOMSON-HOUSTON CO., Ltd. April 13, 1944, No. 6805. Convention date, April 16, 1943. [Class 38 (v)] A thermal switch consists of a contact 13 mounted on a blade 14 fixed to block 15 and biased towards contact 12. A conductor 16 is mounted alongside the blade 14 and connected in series therewith. Their currents are in the same direction and the resultant electromagnetic attraction holds the contacts together until the pressure from rod 21 on a bimetallic strip 19 acting on the blade causes them to separate with a snap action. In Fig. 2 (not shown) a second fixed contact and conductor are arranged on the opposite side of the blade, whereby the latter is held electromagnetically in the displaced position and an alternative connection to the outside circuit is thereby made. The conductors are of different resistances so that when the contact is in the displaced position there is a reduction in the current passing to the heater.
Patent GB-1502652-A (GB)
Title: Apparatus for deriving useful energy from sea waves
IPC: F03B13/14
Filed: 1975-02-19
Abstract: 1502652 Utilizing wave energy R M RICAFRANCA and A S DONATO 19 Feb 1975 [20 Feb 1974] 6962/75 Heading F1S Apparatus for converting wave motion into useful energy comprises a channel for magnifying the amplitude of sea waves having a wide open entrance 9 converging to a narrow exit 11, a pressure chamber 10 connected to the exit in which chamber a standing wave can be transformed to a surge, and where pneumatic compression and suction ensue, and a double acting turbine arranged to utilize the pneumatic pressure of compression and suction. As shown, the turbine drives a generator 6.
Patent GB-684501-A (GB)
Title: Improvements in or relating to electrical resistors and conductors
IPC: H01B1/24
Filed: 1950-03-21
Abstract: A porous vitrified ceramic body is exposed to a hydrocarbon vapour in a furnace at above 800 DEG  C. in a neutral atmosphere or at a reduced pressure whereby the body is impregnated with carbon. The amount of carbon impregnating the body varies according to the length of exposure and/or concentration of the vapour.  In an example, a carbon impregnated porcelain is produced.
Patent GB-780098-A (GB)
Title: Improvements in or relating to the protection of fire extinguishers against corrosion
IPC: A62C13/00
Filed: 1955-03-10
Abstract: 780,098. Preventing corrosion. HUTCHINSON, H. Feb. 24, 1956 [March 10, 1955], No. 7104/55. Class 123(1) The internal surface of a fire extinguisher, which in use contains water or an aqueous solution, is protected against corrosion by a coating of a bitumen mixture, the coating being formed by first preparing a mixture of equal parts of crude oil-based,, steam-distilled bitumen and crude oil-based, air-blown bitumen, in preheating the fire extinguisher body to a temperature higher than the melting point of the bitumen mixture and in applying the mixture to the internal surface, the preferred method of application being to fill the heated body with the melted mixture and immediately to drain it, this operation leaving a uniform and impervious coating on the internal surface.
Patent GB-643325-A (GB)
Title: Improvements in or relating to photo-electric exposure meters
IPC: G01J1/42
Filed: 1947-03-14
Abstract: 643,325. Photo-electric exposure meters. KODAK, Ltd. March 14, 1947, No. 7197. Convention date, March 14, 1946. Addition to 569,614. [Class 40 (iii)] [Also in Group XX] A photo-electric exposure meter of the type described in the parent Specification in which the galvanometer needle 18 viewed through a cylindrical lens 19 and a straight slot is so mounted and shaped that the movement of its visible part bears such a relationship to the changes in incident light, that the pointer can be read against a uniform scale of F numbers, is modified by making the scale movable in accordance with the selected emulsion and shutter speeds. As shown the F-scale is engraved on a metal tape 23 with rack teeth in its upper edge engaged by a pinion 13.on the shaft of the setting knob 27. A disc 29 formed with a window through which an inner scale of emulsion speeds engraved on a disc fast with the knob and an outer scale of shutter speeds engraved on a fixed part of the casing are visible, is rotated relatively to the knob until the desired emulsion speed appears. The knob and window are then turned together, driving the F-scale, until the desired shutter speed is seen. The pointer reading on the scale then gives the necessary aperture. If the exposure meter is mounted on a kinematograph camera a mirror pivoted on the front of the meter is mounted on a kinematograph camera, a mirror pivoted on the front of the meter may reflect the " F numbers engraved on the camera objective through a reading lens in the front of the meter and a window 32 at the back so that the diaphragm setting of the objective may be compared with that indicated by the diaphragm scale. A pair of mirrors may be used so that the scale will appear right side up. Specification 559,412 is referred to.
Patent GB-231167-A (GB)
Title: Improvements in or relating to meters for alternating current
IPC: G01R11/36
Filed: 1925-03-17
Abstract: 231,167. Siemens - Schuckertwerke Ges. March 19, 1924, [Convention date]. Induction motor meters; casings.- The parts of an induction motor meter are arranged so as to occupy minimum space. Figs. 3 and 4 are part sectional elevations looking from the right and left hand sides of the meter respectively. The pressure driving- magnet 17, which is of greater height than the series driving-core 15, is situated below the disc armature 14 facing the terminal block 20. The framework carrying the bearing- screws 9, 12, the magnets 15, 17, the counting-gear 11, and the brake magnet 13 is formed with two parallel portions 1, 2 riveted to the base at 7. The frame part 2 carrying the lower bearing-screw 12 is in a plane passing approximately through the centre of gravity of the pressure magnet 17, and the frame part 1 carrying the upper bearing-screw 9 is in a plane approximately symmetrical with that of the part 1 with respect to the armature disc 14. The brake magnet 13 is arranged with its greater portion 24 at the side of the disc facing the larger magnet 17. The bed plate is formed with a recess 36 to allow for adjustment of the brake magnet 13 and with a recess 29 to accommodate the terminal block 20. Suspension lugs 30, 37 'are welded to the bed plate. The terminal block 20 rests against the lower lugs 30 and has projections carrying the terminal bars which pass through holes into the interior of the bed plate. The terminal block 20 is held from the inside by a screw passing into a metal part moulded into the block. The casing cap 40 is secured at the top and bottom by screws 42, of which the upper screws into a lug 39 of the suspension lug 37. and the lower screws into the metal plate moulded into the block 20.
Patent GB-438929-A (GB)
Title: Improvements in or relating to reciprocating piston compressors
IPC: F02B71/00
Filed: 1935-03-08
Abstract: 438,929. Direct-acting compressors. SULZER FRERES SOC. ANON., Winterthur, Switzerland. March 8, 1935, No. 7265. Convention date, March 13, 1934. [Class 8 (i)] The timing of the fuel-injection valve of a freepiston motorcompressor is automatically determined by a pressure in the internal - combustion cylinder, the ignition being effected by pressure. Fuel is injected by a differential piston 24, Fig. 1, actuated by the combustion pressure applied through a conduit 26 and this pressure applied through the fuel opens the spring- pressed injection valve 8. Fig. 2 shows the valve actuated by a lever 31 from the piston 9, the pivot of the lever being adjustable through an eccentric 32 and rod 34 in accordance with the pressure of supercharging air introduced through ports 21. The control cylinder 35 may alternatively be connected to the exhaust manifold 45 in place of the inlet manifold 37.
Patent GB-1077849-A (GB)
Title: Improvements in or relating to the manufacture of single crystals
IPC: C30B23/06
Filed: 1966-02-18
Abstract: Monocrystalline semi-conducting material e.g. Si or Ge, is deposited by cathode sputtering on to a heated support while superimposing an alternating voltage discharge on the unidirectional voltage discharge employed in the cathode sputtering.  The support may be heated to 800-1400 DEG C.  for Si and 600-900 DEG C. for Ge the cathode of the unidirectional voltage discharge can be used as the counterelectrode for the alternating voltage discharge. The support may be the same material as the material applied thereto.  The sputtering may be carried in H2 or an inert gas, e.g. Ar or a mixture of H2 and Ar at 10-4 - over 760 mm Hg.  The H2 may contain a doping substance, the alternating current frequency may be 50 c/s-10Mc/s.
Patent GB-103754-A (GB)
Title: Improvements in or relating to Means for Mooring Ships and Boats.
Inventor: POTTER WILLIAM ETTY
IPC: B63B21/20
Filed: 1916-05-24
Abstract: 103,754. Potter, W. E. May 24, 1916 Mooring. - Relates to weighting-means for appli cation to the anchoring cables of ships and boats to increase the grip of the anchor and to give elasticity to the anchorage by flexing the cable. The device consists of a hook A and a weight-holding lever B pivoted to the shank of the hook and provided with a part B<1> which closes the hook automatically when the device is hung on the mooring-cable G. When the device is held by the pivoted handle D, the hook falls forward by gravity into the open position. A cord attached to the shackle E of the weight is used to determine the position of the device along the cable and to haul the device back.
Patent GB-459989-A (GB)
Title: An improved circuit arrangement for the production of periodic direct current impulses
IPC: H03K3/16
Filed: 1936-03-11
Abstract: 459,989. Converting. SIEMENSSCHUCKERTWERKE AKT.-GES., Siemensstadt, Berlin. March 11, 1936, No. 7372. Convention date, April 25, 1935. [Class 38 (ii)] In an arrangement for supplying loads such as welding plant or flashing signs with unidirectional current impulses from a D.C. supply 1, a pair of grid-controlled gaseous discharge devices 2, 3 are arranged in parallel-type inverter connection with a commutating condenser 10 and a pair of inductively-coupled quenching inductances 12, 13 each of the discharge device circuits including a purely ohmic resistance 11, 14 across which the load elements 15, 16 are connected. The grid circuits of the discharge devices 2, 3 may be arranged for self-excitation, and may comprise resistances 17, 19 and condensers 18, 20 bridged across the resistances 11, 14, auxiliary rectifiers 21, 22 being provided to discharge the condensers 18, 20 each cycle. The conducting periods of the discharge devices 2, 3 may be varied either equally or, where the load circuits are to be asymmetrically energized, unequally by adjustment of the elements 17 ... 20 to vary the time constants of their respective circuits. The arrangement shown may be modified by interchanging the resistances 11, 14 with the inductances 12, 13 or by connecting the rectifiers 21, 22 between the junctions of the resistances 17, 19 and the condensers 18, 20 and tappings on the resistances 11, 14. The arrangement is designed to produce an output wave form which does not vary with load, and it may be applied also to controlling discharge gap arrangements of high output.
Patent GB-1508192-A (GB)
Title: Vehicle wheel brake lining wear indicator pointers
IPC: F16D66/02
Filed: 1976-02-23
Abstract: 1508192 Pointers SAB BRAKE REGULATOR CO Ltd 23 Feb 1976 [21 Feb 1975]  7427/75 Heading G1J [Also in Division F2]  A vehicle wheel brake lining wear indicator pointer is mounted on a splined S-cam-shaft 4 of an internal expanding wheel brake provided with an adjuster 2; the pointer comprises a finger portion 5 and an apertured hub portion 15 for passage of shaft 4, the pointer being formed with a plastically deformable tongue 5A for protruding into one groove in the splined S-cam-shaft. A washer and nut or spring circlip retains the pointer and the adjuster 2 on the shaft. Pointer may be of metal or plastics.
Patent GB-526063-A (GB)
Title: Improved truck or trolley
IPC: B66F9/02
Filed: 1939-03-07
Abstract: 526,063. Portable hoists. PINDER, J. March 7, 1939, No. 7435. [Class 78 (iii)] Portable hand trucks of the kind in which lifting-platforms are connected to balancing platforms on which the operator stands to overbalance and raise the lifting-platforms, are constructed with a wheeled chassis supporting two H-shaped columns providing inner and outer guideways for the two platforms respectively. Thus, the lifting-platform 12, which is rollerguided in the outer channels of the H-columns 10, is connected by chains 16 to the balancing platform 14, which is roller-guided on the inner channels of these columns, and carries brakeoperating mechanism 25 or a hand-lever 28, Fig. 5, which is used to project locking pins 27 into one or other of the spaced holes 26 to lock the platforms in position. The mechanism 25 rotates a horizontal screw-threaded shaft 21 and thus moves a nut axially to the left. The nut forms part of a bar carrying brake shoes at the ends and causes the shoes to bind against the left-hand walls of the inner channels of the columns. Parts of the platform 14 may extend adjacent to the brake shoes on the opposite sides of the columns and co-operate with the brake shoes in binding on the columns. Steps and a hand-rail may be associated with the columns to enable the operator to climb up to the platform 14 in its raised position. In some cases the columns may be extensible as shown at 30, Fig. 1.
Patent GB-174895-A (GB)
Title: Improvements in and relating to liquid heaters
IPC: F24H1/10
Filed: 1921-03-08
Abstract: 174,895. Beschorner, A. Feb. 1, 1921, [Convention date]. Measuring-apparatus. -In an apparatus for heating liquids a. spring- pressed piston q working in a cylinder p is subjected on its underside to the pressure on the liquid in the apparatus and its movements are indicated on a dial by means of a rod r and a rack and pinion. If the heat input is constant and the outlet is of fixed size, the dial will indicate simultaneously the quantity flowing in a given time and the temperature. Should the pressure become excessive, ports t are uncovered and the pressure relieved.
Patent GB-440860-A (GB)
Title: Improvements in boiler cleaners
IPC: F28G1/16
Filed: 1935-03-09
Abstract: 440,860. Boiler &c. cleaners. BABCOCK & WILCOX, Ltd., Babcock House, Farringdon Street, London.-(Assignees of Thomas, W. P., Bowers, F., and Cox, S. F. ; 10340, Oakland Avenue, Detroit, Michigan, U.S.A.) March 9, 1935, No. 7465. Convention date, Nov. 7, 1934. [Class 99 (ii)] In a boiler &c. cleaner in which blower elements 25, 26 provided with discharge openings 27 extend longitudinally of and are integrally secured to some of the boiler tubes 19, 20, the main 30 supplying cleaning fluid to the blower elements 25 is located wholly outside the boiler setting and the branches 31 between che main and said elements are adapted to pass through a portion of the water circulating space of the boiler. As shown in Fig. 2 each branch 31 passes through a sleeve 33 fixed in a header 17 ; alternatively it may pass through a relatively small opening provided between adjacent headers by forming the latter with depressions. In a modification, Fig. 6, the whole of the branch 31<b> is located within the water space of the boiler, viz. a header 17b and a tube 19b, fluid tightness between the branch and header being effected by a packed joint 50.
Patent GB-557794-A (GB)
Title: Improvements in or relating to electric resistance grids
IPC: H01C3/10
Filed: 1942-06-02
Abstract: 557,794. Electric resistances. SATCHWELL, L June 2. 1942. No. 7492. [Class 37] [Also in Group XXII] An electric resistance is made from a metal plate by cutting slots g or slits g<SP>1</SP>, Fig. 4, terminating in holes d to form a zigzag and then displacing the resultant bars B through 180 degrees so as to face one another without touching: The bends may occur wholly in the metal x beyond the ends of the slits or slots as shown in Fig. 5 or may extend to the bars B, Fig. 9 in which case the plate may be bent first and then cut. The end bars are bent to form hooks c so as to hang the grids on parallel insulated rods in known manner.
Patent GB-614432-A (GB)
Title: Improvements in screw capped or stoppered tins
IPC: B65D35/24
Filed: 1946-03-11
Abstract: 614,432. Unscrewing capped tins. RECKITT & COLMAN, Ltd., and STABLER, W. March 11, 1946, No. 7524. [Class 61 (iii)] [Also in Group XVII] A tin or like metal con tainer has a screwed-on cap 4 and an inward depression 1( formed in the bottom of the tin to fit and firmly grip the cap of a similar tin, whilst it is being unscrewed by relative twisting of the two tins. The flat circular top 5 of the cap is surrounded by an annular channel 9 and a knurled rim 8 the latter being adapted t( engage the knurled wall 11 of the depression 10. In a modi fication, the depth of the de pression is reduced and the reduction made up by adding a raised annular rib, knurled on its inner wall. In other modifications, a second annular rib of smaller diameter or projections to enter the annular channel, or studs to fit corresponding recesses in the top of the cap, are provided. In further modifications, the screw cap is in the form of a Maltese cross or polygon or is of the shape shown and is threaded either externally on.the cap itself or internally on the knurled rim, coacting threads being provided on the inner wall of the recess or rib in the bottom of the tin. Specification 259,040, [Class 125 (i)], is referred to.
Patent GB-1028065-A (GB)
Title: A vacuum operated lifting device
Inventor: GUNTHER ERWIN
IPC: B66C1/02
Filed: 1965-02-22
Abstract: 1,028,065. Suction lifting devices. ENTWICKLUNGSUND MUSTERBAU BAUMECHANISIERUNG VEB. Feb. 22, 1965, No. 7564/65. Heading B8H. In a suction lifting device the motor 6, pump 7, vacuum gauge 9 and control panel 10 are located in a central compartment 5 of a housing having two side compartments 3 which, with a conduit 2, constitute a vacuum reservoir. The compartment 5 has a removable hood and the side compartments 3 have sockets 2<SP>1</SP> into which may be inserted tubes carrying lifting heads. Several housings may be connected together by means of sockets 2<SP>1</SP>, Fig. 4 (not shown). The suction heads comprise circular plates which have grooved packing rings drawn over their edges to form the vacuum chamber, Fig. 12 (not shown). Loads such as paving slabs may be carried in a vertical position by supporting the suction heads on a member which is suspended by one end from the base of the housing. Loads may be carried at an angle to the vertical by pivoting the support member to the desired angle and holding it there by a tie rod, Fig. 7 (not shown). Figs. 8, 9 (not shown) illustrate a plurality of pumps 7 driven by a single motor 6. An optical or audible warning signal is operated if the vacuum falls below a certain value. A standby battery circuit is provided for the safety signalling system. Fig. 10 shows auxiliary grippers 25 which are operated by a turnbuckle driven by a motor 22. The motor housing 26 is displaceable in a support 21 so as to be self-centring. The device may be remotely operated by a second control panel connected either by a cable or a radio link. Figures are given for the suction pressure required for safe working.
Patent GB-259118-A (GB)
Title: Process for the electrolytic separation of metallic chromium
IPC: C25C1/10
Filed: 1926-03-19
Abstract: 259,118. Appel, R. Nov. 26, 1925, [Convention date]. Chromium, obtaining; coloured surfaces, producing; electrolytes, heating. - The electrolyte consists of a dilute solution of chromic acid or a chromate to which is added a small quantity, e.g. about 0.5 g.m., per litre of sodium sulphate, and the anodes are of compact or dense lead, e.g. rolled lead. Anodes of cast lead are not suitable. A suitable electrolyte contains 50 gms. of chromic acid or chromate per litre. The electrolyte should be rendered slightly acid, if not already so, by the addition of a small quantity of sulphuric acid; otherwise a colloidal oxide of chromium may be deposited. The temperature is maintained at 35-40‹ C. bv an electric heater. A voltage of 3-4 and a current density of 0.6 amps. per sq. cm. are employed. Deposits of various colours and degrees of polish may be obtained.
Patent GB-412711-A (GB)
Title: Improvements in and relating to cartons and like containers
IPC: B65D5/72
Filed: 1933-03-14
Abstract: 412,711. Cartons &c. LYONS & CO., Ltd., J., Cadby Hall, Hammersmith Road, Kensington, London, and GRANVILLE, D. A., Wayfarers, Jordans Village, Buckinghamshire. March 14, 1933, No. 7707. [Class 18.] A carton or like container comprising a trayshaped receptacle 1 covered by a sheet 2 of transparent material has an aperture in the receptacle provided with a closing member so that access may be had to the contents of the receptacle without injuring the transparent cover 2. As shown the aperture 3 is made in the bottom of the receptacle near one of the corners and is closed by a flap 4 having flanges 5, 6 engaging the inner faces of the adjacent sides of the receptacle, the flap being held in position by a frangible seal 8 and having a small flap 7 and slot 9 for enabling the flap 4 to be opened after the seal is broken.
Patent GB-1163396-A (GB)
Title: Improvements in or relating to Coathanger Hooks
Inventor: SPILKER ROLF
IPC: A47G25/32
Filed: 1968-02-16
Abstract: 1,163,396. Coat &c. hangers. R. SPILKER. 16 Feb., 1968 [17 March, 1967], No. 7717/68. Heading A4U. [Also in Division E2] A member 2, secured to the free end of the suspension hook of a coat hanger to retain the hanger when suspended from a flat surface, e.g. the top of a wardrobe, consists of an inner sleeve 3, of rigid synthetic material and housing a flattened bearing surface 6, and an outer sleeve 4 of rubber and pushed thereover. The sleeve 4 has a ribbed surface and is retained on the sleeve 3 by an integral stopper 5 which is pressed into the bore of the sleeve 3. In modifications, the member is in strip form, extends normal to the plane of the hook, or is integral therewith.
Patent GB-586846-A (GB)
Title: Improvements in key holders
IPC: A45C11/32
Filed: 1944-07-08
Abstract: 586,846. Retaining articles in pockets. ANDREW, A. S., and WADE, W. L. July 8, 1944, No. 7781. [Class 43] [Also in Group XXV] A keyholder for flat keys used witn revoluble barrel locks comprises a flat, elongated, tapering sheath into which a key may be inserted and frictionally retained by spring leaves 4 formed by slitting the material of the sheath, the sheath being attached to a handbag or clothing by a spring clip 2 formed on the back of the sheath. The sheath may alternatively be fitted with key retaining springs. The leaves 4 are inwardly bowed to effect the frictional grip. The holder may comprise several sheaths as a unit.
Patent GB-338831-A (GB)
Title: Improvements in and relating to mercury vapour rectifiers
IPC: H01J13/32
Filed: 1930-03-11
Abstract: 338,831. Akt.-Ges. Brown, Boveri, et Cie. Aug. 1, 1929, [Convention date]. Metallic - vapour apparatus. - In a mercury-vapour rectifier having anodes c arranged in a circle concentric with an annular cathode e, a central cooling body f extends from the inwardly-dished part g of the bottom of the cathode, vessel almost up to the plane of the anodes. The interior of a star-shaped cooling body which is open to the atmosphere may be connected to, or insulated from, the casing and its walls may be transversely or longitudinally corrugated. The casing and a dome b are provided with double walls between which a cooling medium may be circulated.