baber/WOPTO huggingface dataset:
Patent GB-478629-A (GB)
Title: Improvements relating to finely granular kitchen salt preparations
IPC: A23L27/40
Filed: 1937-08-03
Abstract: Kitchen salt, which may be readily strewn or poured and will not cake, may be prepared by the addition of a calcium compound of lactic acid to ordinary kitchen salt.  This compound may be either calcium lactate or the double lactate of calcium and sodium and should preferably form from 2--5 per cent of the mixture.  The ingredients may be mixed or ground together in the dry state.ALSO:Kitchen salt, which may be readily strewn or poured and will not cake, may be prepared by the addition of a calcium compound of lactic acid to ordinary kitchen salt.  This compound may be either calcium lactate or the double lactate of calcium and sodium and should preferably form from 2 to 5 per cent of the mixture.  The ingredients may be mixed or ground together in the dry state.
Patent GB-1426806-A (GB)
Title: Power steering device
IPC: B62D5/24
Filed: 1973-05-04
Abstract: 1426806 Power steering systems TOYODA-KOKI KK 4 May 1973 [13 May 1972 (2)] 32196/73 Heading B7H A power steering device is provided with inlet and outlet ports 30, 31, flap valves 10, 12, for respectively controlling inlet and outlet distribution, and a coil spring 44 extending across the outlet 31, the spring being compressible by piston means to restrict flow through the outlet and prevent cavitation therein. A rotatable valve body 5 is provided with end recesses 8, 9 housing valves 10, 12, and annular recesses 6, 7 joined by lines 35, 36 to chambers 1b, 1a of the power cylinder 1. A torsion bar 22 extends through steering, valve and worm shafts 13, 11, 21 and is fixed to each shaft by pins. Worm shaft 21 rotates with body 5 whereas shafts 11, 13 are rotatable therein, valves 10, 12 are formed as projections of shafts 11, 13. Valves 10, 12 are rotatable to close diagonal pairs of inlet and outlet passages 8a, 8b and 9a, 9b in the body 5, the ports 8a, 9b and ports 8b, 9a being interconnected; the clearance of valve 12 is greater than that of valve 10. On clockwise rotation of shaft 13 a portion 22a of bar 22, having a low spring rating, allows shafts 11, 13 to rotate relative to body 5 thus closing passages 8a and restricting passages 9b. Portion 22b of bar 22, of high spring rating, allows  further restriction of passages 9b on continued rotation of shaft 13. Fluid passes from inlet 30 via ports 8a and annular recess 6 to chamber 1b, and fluid exhausted from chamber 1a passes via line 36 and passages 9a to the outlet 31. Fluid passing to passages 9b from 8a is jetted through the restriction into chamber 9 giving rise to cavitation and noise. To reduce these effects a coil spring 44 extends across outlet 31 and pistons 42, 43 abut the ends thereof. Lines 45, 46 from chambers 1b, 1a supply fluid to the rear faces of the pistons so that on pressurization of a chamber a piston is moved to compress the spring windings and throttle the outlet. In another embodiment (Fig. 9, not shown) piston 43 is fixed and piston 42 actuated by pressure at the inlet 30. In a further embodiment (Fig. 6, not shown) the piston are separately situated in vertically spaced bores crossing the outlet and a coil spring is provided in each bore. In yet another embodiment, Fig. 7, the spring is compressed by a stepped piston having portions 62b, 62a respectively acted upon by pressure in chambers 1b, la.
Patent GB-1180755-A (GB)
Title: Device for Controlling the Voltage Supply to an Electric Load
IPC: H02M7/15
Filed: 1967-05-09
Abstract: 1,180,755. Control of A.C. loads; control of A.C. motors. PHILIPS ELECTRONIC & ASSOCIATED INDUSTRIES Ltd. 9 May, 1967 [11 May, 1966], No. 21429/67. Headings H2H and H2J. [Also in Division G3] A circuit for firing controlled rectifiers, e.g. thyratrons or thyristors TH1, TH2, comprises a transformer TR1 having one primary winding P2 connected across the supply 8, 9 and another winding P1 connected to the load L, with the controlled rectifiers connected across both the windings. A secondary winding feeds through a diode bridge D1-D4 control circuitry which comprises a potentiometer R1, R2 charging through a voltage-dependent resistor R3 and a diode D5 a capacitor C1 which is periodically discharged by a unijunction transistor T1 through the primary winding of a transformer TR2, the secondary windings of which are connected to the gates of the rectifiers. The circuit may be linearized by making resistor R6 voltage dependent. The load may be an incandescent or a discharge lamp L and the illumination may be varied manually, or automatically by connecting a photo-sensitive member, e.g. a cadmium sulphide resistor directly across terminals 4, 5, or by incorporating it in a transistor preamplifier circuit, Fig. 5 (not shown). Alternatively the load may be a space heater with temperature detection by means of a temperature-sensitive resistor connected directly across terminals 4, 5, or substituted for the member (28), Fig. 5 (not shown), the sense of the control being dependent on whether a PTC and/or NTC resistor(s) are used. The circuit may be used to control the speed of an electric motor.
Patent GB-370781-A (GB)
Title: Improvements relating to cartons or cases for cigarettes or cigars
IPC: B65D85/10
Filed: 1931-07-27
Abstract: 370,781. Cigarette &c. cartons or cases. HALTENHOFF, A. G., 79E, Harcourt Terrace, West Brompton, London. July 27, 1931, No. 21437. [Class 18.] A paper or metal cigarette &c. drawer-and. shell carton or case has members G fixed on the inside of the narrow side of the shell A to engage with notches K in the narrow sides of the sliding drawer B, the ends of the members G having projecting parts H, I which are adapted to contact with one or other of the sides of the notches K and prevent the drawer being pushed out at one end of the shell and limit its projection from the other end thereof. A row of matches D and a striking surface E are fixed to the inside of the flap C of the drawer and are protected from the cigarettes when the carton &c. is closed by a flap F.
Patent GB-423861-A (GB)
Title: Intermediate frequency band pass filter
IPC: H03H7/01
Filed: 1933-07-31
Abstract: 423,861. High-frequency transformers. VOGT, H., 69, Steglitzer Strasse, Lichterfelde, Berlin. July 31, 1933, No. 21449. Convention date, Aug. 4, 1932. [Class 38 (ii)] [See also Groups XXXVI and XL] An intermediate frequency band-pass filter having two inductance units 31, 33 with their respective condensers 32, 34, in a common casing 30 has each of the inductances provided with a low-loss magnetic core of permeability 10-20. The inductance units are relatively movable for adjusting the coupling, or a movable screen 35 is located between them for this purpose. The condensers are adjusted by screws 39, 40. One of the units is tapped to match the impedance of the preceding thermionic valve. The inductance cores may be shell-type, and when the units have been matched up the casing is filled with insulating material. The Specification as open to inspection under Sect. 91 describes also the following constructions. Three toroidal units 1, Fig. 1 (Cancelled), of different wavelength ranges are superposed axially and contained in a metal casing 3 with screening-plates 9 between the coil units. Fig. 4 (Cancelled) shows two sets of toroidal units mechanically coupled and provided with a cam switch for wave-range changing. In Fig. 8 (Cancelled), long-wave coils 43, 44 are arranged in lower casings 41, 42, the short-wave coils being in upper casings 45, 46. The units in this construction have shell-type cores and the coupling is indicated by the arrows A. Adjustment of the degree of coupling can be effected by varying the distance between the units or by screening-plates, further individual adjustment for matching purposes being effected by screws 47. Condensers 49, resistances 50 and wave-range switch 48 are built in, the screening cover 51 being frictionally held on the lower frame 52. This subject-matter does not appear in the Specification as accepted.
Patent GB-500474-A (GB)
Title: Improvements in or relating to methods and means for applying an adhesive material to surfaces
IPC: B31B50/62
Filed: 1937-08-05
Abstract: 500,474. Coating with adhesives. SEALCONES, Ltd. Aug. 5, 1937, No. 21606. Convention date, Oct. 17, 1936. [Class 95] Paper or like fibrous sheet material is coated with a film of a thermoplastic adhesive, e.g., a film from <1>/800 to <2>/1000 inch in thickness, by forming a film of the desired thickness in a viscous state on an applying device, e.g. a printing plate or cylinder, transferring the previously formed film to the paper by contact, without contact between the paper and the applying device, and finally drying. The film may,be applied to the whole surface of the paper blank or only to desired areas, by use of an applying device of corresponding form. As shown, the adhesive is fed by rollers 12,11,10 to the raised area 9 on cylinder 8,and a blank B to be coated is carried into contact with the adhesive film on the applying device 9 by a platen 7 which moves from A to A<1> with the same linear speed as the applying device. The coated sheet 4 delivered to a conveyer C and through a heated chamber (not shown) or beneath gas burnets 17, which may extend over only apart of the conveyer. The applying device, 9 is of metal or other material to which the film adheres less strongly than to paper &c. The adhesive may consist of natural or synthetic resin and solvent, with or without water and a plasticizer. A thermoplastic non-adhesive material; e.g. paraffin wax, may be mixed with the adhesive and fused during the drying of the film so as to form a coating which prevents offsetting of the adhesive when coated sheets are stacked ; or such a coating maybe applied over the adhesive. The method of coating is described as applied to coating the edges 14, 15, 16 of blanks B to form the body portions of truncated conical containers ; the seams in the finished container become protected by the non-adhesive material, and the finished container or the blanks may be coated so as to be waterproof and /or oil and grease proof.
Patent GB-1224991-A (GB)
Title: Process for forming metallic coatings on glass and other materials
IPC: C03C17/10
Filed: 1968-05-07
Abstract: 1,224,991. Coating with Fe, Co, Ni. GLAVERBEL. May 7, 1968 [May 30, 1967], No.21655/68. Heading C7F. A surface is coated with at least one of Fe, Co, or Ni by discharging a solution or solutions containing a salt of Fe, Co, or Ni and at least one reducing agent on to the surface to form thereon a coating from which the metal deposits on said surface, and immediately before or at the time when any given zone is coated with said solution(s), that zone is contacted by dissolved Pd salt. The surface is of glass, plastics or ceramics, the reducing agent is an alkali metal hypophosphite or borohydride, and the metal salt solution may contain ammonia or Na citrate as complexing agent. In Fig.1, Pd salt, coating metal salt, and reducing solution from tanks 29a, 29b, and 29c respectively pass to reservoirs, 17a, b, c and down fabric wicks 23a, b, c to metal wires 24a, b, c near the surface of glass sheet 11, moved in direction 12, and there is formed on the glass a triple liquid coating layer 31a + b + c from which coating metal deposits on to the glass. The fabric wicks 23 may be replaced by spray atomizers Figs. 3, 4 (not shown) or ejectors and the coating metal salt and reducing solution may be mixed prior to application to the substrate Fig. 5 and 6 (not shown) or all three solutions may be applied simultaneously.
Patent GB-614534-A (GB)
Title: Improvements in automatic firearms
IPC: F41A3/40
Filed: 1946-07-19
Abstract: 614,534. Automatic firearms. LIPPERT, H., and HEPPERLE, E. July 19, 1946, No. 21705. Addition to 612,182. [Class 92 (ii)] The invention of the parent Specification is now modified by forming the breech casing 1 and the breech-block locking member 13 with coacting surfaces 16, 15, which are automatically released after discharge of the weapon, and by arranging that the energy accumulator 9 which actuates the locking member also serves to retain that member in the locked position. In the construction shown a housing 9a for the accumulator spring 11 is connected by a pin 10 to an arm 19 pivoted to the breech casing. The housing serves as a support for an arm 17 of the member 13. On discharge, the casing and breech-block 5 recoil together until the arm 19 is rocked by striking a surface 20 on the gun cradle 3, thus moving housing 9a clear of the arm 17 and enabling the surfaces 15, 16 to disengage. The breech-block can then recoil alone against the action of a spring 6, and when it returns its arm 17 strikes the housing 9a to compress the spring 11, the impact of the housing on an abutment 12 of the casing 1 serving to help the spring to re-assert itself when moving the housing back to the position shown. In a modification, Figs. 7-11 (not shown), the accumulator housing is connected by a pin to a lever pivoted on the cradle 3, this lever being rocked by an abutment on the breech casing during the recoil movement.
Patent GB-655801-A (GB)
Title: Improvements relating to drive transmitting devices suitable for oil-immersed transformer tap-changing switches
IPC: H01F27/04
Filed: 1948-08-17
Abstract: 655,801. Actuation of switches. BRITISH THOMSON-HOUSTON CO., Ltd., and APPLEYARD, A. N. Aug. 17, 1948, No. 21706. [Class 38(v)] '[Also in Group XXIV] A coupling extended for driving the operating shaft of a tapping switch on an oil-immersed transformer is constructed to provide a glandless hermetic seal where it extends through the wall of the transformer tank. The switch shaft 11 is rotatable in a bushing 1 secured to the oil-tank and has an eccentric hole 19 whereby it is rotatably connected to an intermediate member 12 by a pin 24, a pin 23 similarly connecting the member 12 with a.driving member 8. A metallic bellows 14 secured to the bushing 1 and to a flange 13 on the member 12 constitutes the hermetic seal, and prevents any tendency for the member 12 to rotate about its own axis, whereby the member 12 describes a double cone having its apex on the axis 17 and the shaft 11 rotates in consonance with the member 8. According to the Provisional Specification, the flange 13 is situated at the centre of the member 12. Specification 15,172/12, [Class 80(iii)], is referred to.
Patent GB-1189822-A (GB)
Title: Method of making Xerographic Glass Binder Plates
IPC: G03G5/085
Filed: 1967-05-10
Abstract: 1,189,822. Xerographic plate. RANK XEROX Ltd. 10 May, 1967 [13 May, 1966], No. 21764/67. Heading H1K. [Also in Division C1] A xerographic plate is formed by adding an activator to a mixture of a glass binder and a photo-conductor, coating the mixture on a substrate and firing the mixture. The activator is preferably Cu or Ag added as the chloride, nitrate or sulphate but may also be Ga, In, Al and/or Cl. The photo-conductor is preferably CdS, CdSe or CdSeS but many other materials are specified. A number of glass compositions are specified containing oxides of Si, Ca, Na, B, Pb, Cd, Li, K, Ti, Al, Zn and Ba, together with NaF. The support may be Al, brass, Cu, Ni, stainless steel or conductively coated glass or plastics.
Patent GB-905631-A (GB)
Title: Improvements in or relating to a crane, excavator, dragline or like swivel connection
IPC: F16C19/16
Filed: 1959-06-25
Abstract: 905,631. Ball-bearings. BARGMANN, E. June 25, 1959 [June 28, 1958], No. 21767/59. Class 12 (1). A single-row ball-bearing swivel connection for mounting a rotating superstructure 8 of a revolving crane on an undercarriage 4, has narrow vertical faces 10, 12 and 11, 13 on its rings 1 and 2, 3. The faces are offset and allow ball-races, formed by the rings, to have their thicker portions adjacent the points of application of the maximum load. The rings 2, 3 are held by a bolt 7 to the superstructure 8 and the ring 1 is held by a bolt 6 to the under-carriage 4. The rings 2, 3 facilitate insertion and removal of balls 9 and permit the receiving of a ball retainer 16 in a groove 17 formed at the joint of the rings 2, 3. A ring- gear 5, having internal or external teeth, may be integral with the ring 1 or attached separately to the undercarriage 4. The balls are unequally spaced so that the race wears evenly. In a modification the ball retainer is a solid ring made in two parts and a groove is provided in the ring 1 to receive the retainer.
Patent GB-531587-A (GB)
Title: An improved electrode or die for electrical welding and a method for the production thereof
IPC: B21D51/54
Filed: 1939-07-27
Abstract: 531,587. Making welding electrodes. BUDD MANUFACTURING CO., E. G. July 27, 1939, No. 21813. Convention date, July 27, 1938. [Classes 83 (ii) and 83 (iv)] Cupping.-A hollow resistance welding electrode consists of a head and sleeve portion formed by drawing from a blank of copper or copper alloy. The electrodes 20, 22 are each formed by placing a disc in the centring portion 46 of a die and then pushing it through the die by a punch 50 so as to obtain a cupped blank 52. The blank then undergoes two subsequent drawings through dies of smaller dimensions, the punch 70 in the last operation having a flat end with rounded corners 76 so as to obtain a bore with a flat end. Annealing may be effected between successive operations, particularly prior to the final drawing. The tip, which is of thickness equal to that of the original blank may be hardened so as to give it a hardness greater than the sleeve portion by placing on a pedestal 78 and coldhammering by a reversed die 80. An annular groove in the cut in the tip near its base so as to indicate the amount of wear during use and the shank is ground to taper form so that the electrode will fit in the ferrule 34 of the socket of the welding machine. Cooling medium is supplied to the electrodes through tubes 30.
Patent GB-1015183-A (GB)
Title: Apparatus for controlling and releasing pims from a magazine in an automatic weavingloom
IPC: D03D45/20
Filed: 1962-06-06
Abstract: 1,015,183. Bobbin magazine for automatic looms. METAPIC S. A. HOLDING LUXEMBOURGEOISE. June 6,1962 [March 20,1962], No. 21816/62. Heading D1E . The bottom bobbin 32 in a magazine compartment is supported at its head by a curved surface 16 of a slide 9, and at its nose by a peg 19 carried by the slide. To release the bobbin, the slide is moved to the right , whereupon a rib 14 engages under the head of the next bobbin 33, and a rod 23 moves to the left to support its nose.
Patent GB-583590-A (GB)
Title: Improvements in and relating to linear measuring devices
IPC: G01B3/18
Filed: 1944-11-07
Abstract: 583,590. Pencil holders. MOREHEAD, J. H., and RITCHIE, G. R. M. Nov. 7, 1944, No. 21832. [Class 146 (iii)] [Also in Group XIX] A pencil holder com prises a measuring whee 24 which, when rolled along the length to be measured, rotates a threaded shaft 22 carrying a spiral shaped washer from which a lug 38 pro jects into a slot 40 and indicates the length agains adjacent graduations. In a modification, a flat spring 56 with a slightly dishec guide 58 may be provided for guiding and retaining wires and similar article in contact with the measur ing wheel.
Patent GB-732200-A (GB)
Title: Improvements in or relating to impermeable asbestos-cement tubes
IPC: B28B21/48
Filed: 1953-08-07
Abstract: 732,200. Asbestos-cement tubes. ETERNIT SOC. PER AZIONI., [formerly SOC. PER AZIONI ETERNIT PIETRA ARTIFICIALE]. Aug. 7, 1953 [Sept. 24, 1952], No. 21926/53. Class 99 (2). A tube 1, made by spirally winding and pressing an asbestos-cement sheet, is mounted on a hollow mandrel 2, and while the mandrel is rotated a layer 15 of asbestos-cement, having incorporated therein an impermeabilizing material such as resin or asphalt in solution, is applied to the external surface of the tube, some of the resin or asphalt under the action of external pressure, e.g. that exerted by cylinders 8, combined with a vacuum produced inside the mandrel penetrating the surface of the tube so that the layer 15 is keyed onto the tube. Holes 3 are provided in the peripheral surface of the mandrel 2 and means such as gaskets, may be placed at the ends of the mandrel and tube to provide for a uniform distribution of the vacuum about the whole internal surface of the tube. The mandrel may be frictionally driven by the cylinders 8 and be supported in friction rollers 6 movable vertically to allow removal of the tube from the mandrel. To distribute the material forming the layer 15 a carriage 11 carrying a tank 12 provided with a mixing device 16 and an outlet 13 may be mounted on a rail 10 for movement in the axial direction of the mandrel. The impermeabilizing material may be between 10 and 50 per cent of the dry weight of the asbestos-cement to which it is added.
Patent GB-1464970-A (GB)
Title: Pulse-modulated semi-conductor lasers
IPC: H01S5/042
Filed: 1974-05-17
Abstract: 1464970 Lasers SIEMENS AG 17 May 1974 [14 June 1973] 21985/74 Heading H1C In a pulse modulated semi-conductor laser system, the laser 1, Fig. 2, which may be a GaAs diode, is pumped by the combination of a direct current source 2, an alternating current source 3 and a pulse-type modulating current source 4, the frequency of the alternating current corresponding to the natural relaxation oscillation frequency of the laser. The current sources and the modulating current may be applied through transistors, Fig. 3. In a further arrangement, Fig. 4, for regenerating light pulses received by a receiver 6, the receiver output controls a modulating signal source 4 through an amplifier 8, and a component of the signal applied to a photodiode 7 produces timing pulses controlling an alternating current source 3.
Patent GB-207501-A (GB)
Title: Improvements in or relating to apparatus for the examination of the keenness of vision and the chromatic sense
IPC: A61B3/06
Filed: 1923-08-31
Abstract: 207,501. GuÚrin, E. Nov. 22, 1922, [Convention date]. Sight - testing apparatus for testing acuity of vision and the chromatic sense comprises a source of light 2 enclosed in a casing 1, the casing 1 being capable of rotation about the light, and having a translucent ribbon 9 on rollers at one end for testing acuity of vision and a disc 6 at the other end for testing the chromatic sense. The apparatus is normally housed in a casing 39 and is supported on a base 40 fitted with stops 41 which fit the casing 39 when the same is used as a stand during testing operations. The translucent ribbon 9 is provided with charts of type of graduated sizes consisting of letters or outlines so that test mav be made of both educated and illiterate persons. When using the colour sense testing disc 6, the casing 1 is rotated through 180‹ and various colour screens, signals, semaphores &c. which are on the disc 6 may be brought into position before an aperture 46 in the casing 1. The light 2 may be varied in conjunction with comparison photometers so that tests may be carried out at various and definite luminosities.
Patent GB-793810-A (GB)
Title: An electric motor with a small moment of inertia at its output side
IPC: H02K7/108
Filed: 1955-08-02
Abstract: 793,810. Electric motor driving arrangements; magnetic dust. ELEKTRO-MECHANIK-GES. Aug. 2, 1955 [Aug. 2, 1954], No. 22152/55. Classes 35 and 38 (2). A squirrel-cage motor drives through a magnetic powder clutch situated within the rotor 5. The inner member of the clutch consists of a two-pole, D.C. excited rotor 14 fixed to the driveshaft 13. The outer and inner members of the clutch are lined with iron tubes 9, 16, respectively, between which is contained the magnetic powder, which is preferably composed of dry, approximately spherical, grains of 0.1 to 0.3 mm. size. Slots 22 serve to shield the clutch from the motor flux.