baber/WOPTO huggingface dataset:
Patent GB-222838-A (GB)
IPC: C01D1/24
Filed: 1924-07-31
Abstract: Alkali salts such as sodium or potassium nitrate, chloride or sulphate are treated with hydrofluosilicic acid to obtain the corresponding free acid and alkali silicofluoride.  The latter is heated to obtain alkali fluoride and silicon fluoride and the alkali fluoride is reacted with calcium carbonate or hydrate to obtain alkali carbonate or hydrate and calcium fluoride.  The calcium fluoride is treated with the silicon fluoride and with sulphuric acid to recover hydrofluosilicic acid.  The Specification as open to inspection under Sect. 91 (3) (a) includes the use of other complex fluorine acids such as hydrofluoboric acid.  This subject-matter does not appear in the Specification as accepted.ALSO:Alkali salts such as sodium or potassium nitrate, chloride or sulphate are treated with hydrofluosilicic acid to obtain the corresponding free acid and alkali silicofluoride.  The latter is heated to obtain alkali fluoride and silicon fluoride, and the alkali fluoride is reacted with calcium carbonate or hydroxide to obtain alkali carbonate or hydroxide and calcium fluoride.  The calcium fluoride is treated with the silicon fluoride and with sulphuric acid to recover hydrofluosilicic acid.  Specification 219,971 is referred to.  The Specification as open to inspection under Sect. 91 (3) (a) includes the use of other complex fluorine acids such as hydrofluoboric acid. This subject-matter does not appear in the Specification as accepted.
Patent GB-488237-A (GB)
Title: Improvements in bust supporters
IPC: C04B41/48
Filed: 1937-07-01
Abstract: 488,237. Brassieres. BERNARD & CIE. July 1, 1937, No. 18341. Convention date, Sept. 18, 1936. [Class 141] A brassiere comprising two pockets 1 united together by a front bond 2, and maintained on the body by a, dorsal strap 3a, and tabs 3b, is characterized in that each pocket is provided with a border shaped to surround the breast, the border comprising an arc-shaped stiffening element 1a, and an anti-slipping lining 4 on the side adapted to contact with the body. The anti-slipping lining 4 is constituted by threads of gum which are incorporated in the fabric of the border so as to form small projecting loops. The tabs 3b may also be provided with an anti-slipping lining. Each stiffening element 1a is cambered in its upper part 1b to conform with the shape of the bust.
Patent GB-735634-A (GB)
Title: Improvements in or relating to spray guns for use in the application of plastic and other semi-liquid compositions to surfaces
Inventor: HAWES ALBERT HENRY
IPC: E04F21/12
Filed: 1951-08-03
Abstract: 735,634. Spray-producers. HAWES, A. H. Aug. 5, 1952 [Aug. 3, 1951; Nov. 14, 1951; Nov. 14, 1951]. Nos. 18383/51, 26615/51. and 26616/51. Class 69 (3). A spray gun for semi-liquid compositions such as cement, mortar or plastic slurries, includes a body 10 through which extends a bore 11 forming part of a feeding and circulating circuit, a cylindrical atomizing chamber 14 fed from the bore via a control valve 15, and a bore 19 through which pressure gas is supplied to the chamber via a control valve 20. The gas supply is further controlled by a valve 21 which, together with the valve 15, is controlled by a trigger 22. A cylindrical baffle 28 within the chamber 14 and spaced from its walls has circumferentially spaced holes 32 through which the gas flows to atomize the composition within the chamber, and to deliver the composition through converging passages 35 to a discharge nozzle 34. A cylindrical shield 36 is secured to the nozzle by a ring 37. Specifications 599,315, 627,440 and 730,557, [Group III], are referred to.
Patent GB-222980-A (GB)
Title: Improvements in or relating to carburettors
IPC: F02M3/12
Filed: 1923-07-17
Abstract: 222,980. Thrutchley, W. F. July 17, 1923. Spray carburettors.-The nozzle comprises an inner fuel tube 8 and an outer tube 4, the inner tube being provided with air inlets 18 and with mixture outlets 26. During normal running, when the well 21 has emptied, air admitted at 22 passes through the inlets 18 to the fuel tube, the rich mixture is drawn through the outlets 26 into the air stream between the tubes, and is discharged into the main air current through an annular outlet 7. The fuel is controlled by an adjustable needle valve 14. A slow-running nozzle 25 supplied from the well 21 by a tube 23 is provided. In a modification, the fuel tube is provided with an axial outlet in addition to the outlets 26, in which case part of the rich mixture issues direct from the end of the tube. In further modifications, the fuel tube is shorter than the outer tube, and is either closed or open-ended.
Patent GB-742921-A (GB)
Title: Improvements in hot water boilers, steam boilers or the like
IPC: F24H9/00
Filed: 1951-08-03
Abstract: 742,921. Vertical steam boilers; hot-water boilers. AKTIEBOLAGET SVENSKA MASKINVERKEN. Aug. 3, 1951 [Aug. 7, 1950], No. 18488/51. Classes 64(1) and 123(2). A hot water or steam boiler having a convection channel through which hot combustion gases rise, at least one wall of the channel being in common with a container for boiler medium which absorbs and emits heat, is characterised in that pins or rod-like members of a material of higher heat conductivity than the container wall extend from that wall into the convection channel. In Fig. 1 a combustion chamber 1 has outlets 7, 8 for hot gases which pass upwardly through an annular space 15 to an outlet 18. Water is admitted at 6 and flows between walls 3, 4 to a cylindrical container 9 and then flows from an outlet 13. Pins 14 extend from the outer wall of the container and a corrugated plate 20, Fig. 2, is secured to its inner wall. The container may include a fixed or removable heat exchanger 21 comprising vertical water circulating tubes 22 extending between chambers 23 and 23a, and having a water inlet 26 and an adjacent outlet. The corrugated plate 20 may have projecting tongues pressed from it. In Fig. 5 the combustion chamber 1 includes a hollow liquid cooled circular wall or mantle connected by radially arranged tubes 32, 35 with a container 9. Rods &c., 14, 14a are secured to the walls of the convection channel and guide plates 33 are fixed to the tubes. In an alternative construction the mantle is in upper and lower detachable halves, the lower half being hollow and connected by tubes to the container, and the upper half being filled with heat insulating material. In Fig. 10 the combustion chamber 1 is surrounded by a hollow water cooled wall in two sections 47 and 48 interconnected by tubes 49 and 50. The combustion chamber of Fig. 13 is surrounded by circular or other shaped tubes 58, 59 leading from a liquid distributing box 60 and connected to a liquid container 9. The tubes may be spaced apart and provided externally with radially arranged pins. The combustion chamber may be heated by a burner flame which is directed tangentially against the chamber walls. Specification 737,911 is referred to.
Patent GB-1436112-A (GB)
Title: Direction indicator system for road vehicles
IPC: B60Q11/00
Filed: 1972-04-20
Abstract: 1436112 Road traffic signals on vehicles CAV Ltd 10 April 1973 [20 April 1972] 18493/72 Heading G4Q A direction-indicator system on a road vehicle comprises a single integrated circuit 12 and circuitry externally connectable thereto in at least two alternative ways to enable the system to operate in any one of at least two different modes. In the embodiment three modes of operation are explored: (a) "European" system.- Pilot lamps L1, L2 flash in phase with main indicator lamps 16, 17 under normal conditions with vehicle trailer attached. If one indicator lamp fails or the trailer be disconnected one of the pilot lamps ceases to operate and if two indicator lamps fail or with the trailer disconnected one indicator lamp fails, both pilot lamps cease to operate. To effect this mode terminals G and H are respectively connected to transistors ET3, ET2. (b) "British" system.- A single pilot lamp L1 normally flashes in phase with lamps 16, 17 and is extinguished when one or more lamps 16, 17 fail; with trailer connected the sensing level at which lamp failure is detected is modified to allow for the extra lamps on the trailer. Terminals G, H are connected together, as are terminals F, M; transistor ET2, diode ED2, resistor R5 and lamp L2 are not required, and terminal I is connected via resistor ER4 to closed trailer plug contact 18. (c) "British economy" system.-A single pilot lamp (not shown) is connected across relay contacts 14 to flash in anti-phase with the main indicator lamps under normal conditions. If one or more indicator lamps fail the flasher circuit in the integrated circuit is stopped, the remaining indicator lamps remain lit and the pilot lamp is off; the level at which lamp failure is detected is modified when a trailer is connected.
Patent GB-828145-A (GB)
Title: Improvements in or relating to electric amplifying devices
IPC: H05B33/14
Filed: 1958-06-10
Abstract: 828,145. Electrophotoluminescent amplifiers. PHILIPS ELECTRICAL INDUSTRIES Ltd. June 10, 1958 [June 13, 1957], No. 18521/58. Class 39(1). [Also in Groups XXXVI and XL(c)] In a device for amplifying electric power, the electric power is supplied to the electrodes of an electrophotoluminescent element 3 which is irradiated preferably by light of short wavelength, e.g. ultra-violet light, this element being combined with a photosensitive element 4, e.g. of cadmium sulphide, the impedance of which is varied by the field modulated luminescence, so that an amplified voltage may be derived from a load impedance 8. If the luminescent material is zinccadmium-sulphide activated with copper and chlorine it is possible to use daylight for the continuous irradiation. The voltage to be amplified is preferably modulated on an alternating voltage of comparatively high frequency but modulation on carrier oscillation is not necessary if the luminescent layer exhibits field extinction a suitable phosphor being zinc-cadmium selenide activated with silver and chlorine which also contains certain other elements such as iron, cobalt or nickel.
Patent GB-870690-A (GB)
Title: Improvements relating to stopping devices for knitting machines
Inventor: HANZL VLADIMIR
IPC: D04B35/18
Filed: 1959-06-01
Abstract: 870,690. Knitting-machinos. SDRUZENI PODNIKU TEXTILNIHO STROJIRENSTVI. June 1, 1959, No. 18527/59. Class 74 (2). A stop-motion for a circular machine driven by an electric motor through a belt drive, comprises a feeler 21 adapted to engage misplaced or broken needles whereby trip mechanism 29, 30 is operated to release a spring-loaded rod 36. The rod 36 carries a boss 41 which when the rod moves upwardly, engages a lever 18 connected to a pivot pin 2 of an electric switch. The pin 2 also has rigidly secured thereto a lug 10 on a boss 9 which on upward movement of the lever 18 engages a projection 4 of a sleeve rotatable on pin 2 and carrying a contact 5. The sleeve is normally urged by a spring 7 into a position in which contact 5 is spaced from a stationary contact 14 and is retained in that position by a stop 6. When the lever 18 is moved upwardly, therefore, the contacts are brought together, thereby completing an electrical circuit to stop the machine. Simultaneously a collar 42 on the rod 36 lifts a lever 43 which releases the belt shipping mechanism 52 and causes the belt to move on to the slow pulley. The boss 41 having passed above lever 18, the lever and lug 10 are pressed downwardly, when the mechanism is reset, against the action of a spring 11 connected to boss 9, and simultaneously the contact 5 is disengaged from contact 14 by the action of spring 7.
Patent GB-227382-A (GB)
Title: Improvements in mops
IPC: A47L13/256
Filed: 1924-08-05
Abstract: 227,382. Johnston, J. Aug. 5, 1924. Floors, cleaning. - A frame G carries rotatablymounted boards 25, 26, the board 26 having a fabric wound thereon, and means for drawing the fabric from the board 26 on to the board 25 and for reversing the frame wherebv the reverse side of the fabric may be used. A tank 5 is mounted in a frame comprising a cross-bar 18 and standards 17 between which is pivotally mounted the frame G consisting of sidearms 19 and pins 20, 21. The frame G is locked in alignment with the standards 17 bv means of a U- shaped member 50 pivotally connected to sidebars 51 which are shaped to engage with the upper ends of the frame G and are slotted to receive pins secured in the standards 17. Arms 30 are hinged to the standards and carry at their lower ends a claw member 32 and intermediate their ends a detachable pin to hold a roll of fabric. The arms may be held in alignment with the standards 17 or may be placed to support the pad when the fabric is being placed on the boards. The end of the fabric is drawn off the roll and wound on the board 26, the free end being then passed over rollers 27, 28, 29 and partly round the board 25 to which it is secured. When the pad is in use the arms 30 are secured in alignment with the standards 17. In order to use a fresh piece of fabric the handle 10 of the pad is brought forward until the claw 32 engages the front of the board 25, whereupon the handle is drawn back until the board 25 turns over. The standards 17 carry a pair of guide-walls 38 with curved slots to receive the ends of a pin carrying a roller 42 which normally rests on the board 26. The slots are so arranged that the roller rides over the end of the board when it is turning over. To use the reverse side of the fabric, the frame G is released by operating the member 50 and is turned end for end. The tank 5 may be divided into two compartments 7, 8 to contain, respectively, water and oil, which are fed to the surface under treatment through pipes 11, 14 provided with valverods 12, 15.
Patent GB-574332-A (GB)
Title: Improvements in or relating to cartons or boxes
IPC: B65D83/06
Filed: 1943-11-10
Abstract: 574,332. Boxes, cartons &c. WOOD, W. J. Nov. 10, 1943, No. 18698. [Class 18] A cardboard, strawboard &c. box or carton for comminuted material such as toilet or face powder comprises an outer cylindrical wall 3 and adhesively secured thereto an inner cylindrical wall 1 with apertures respectively at 4 and 2, a shutter 5 which may be apertured being located between the walls and having a loop 8 of textile secured by its ends to the inner face of the slide which can be moved thereby to obturate the opening in the inner wall. The aperture in the outer wall may be covered by a paper &c. sheet of the same size, and an outer paper &c. seal, frangible along predetermined lines may be secured over the aperture. An inspection window 11 covered by transparent material may be provided.
Patent GB-193342-A (GB)
Title: Improvements in or relating to the ventilation of passenger vehicles
IPC: B60H1/26
Filed: 1922-07-07
Abstract: 193,342. Payne, B. A., and Bristol Tramways &. Carriage Co., Ltd. July 7, 1922. Ventilating vehicles.-A passenger vehicle of the type comprising a closed body with a compartment, such as the driver's compartment, in front, and having a ventilating-shaft opening at its front end into the atmosphere at a point outside the front compartment and at its rear end into the closed body, is characterized by the roof of the forward compartment being hollow throughout substantially its whole width, the whole of the hollow interior of the roof forming the ventilating-shaft. In the arrangement shown, the driver's compartment 11 is provided with a hollow roof 13, 14, forming a ventilating-duct having a down-turned front end provided with a grid 16 and opening at the rear end into the closed bcdy 10, the latter opening being controlled by slotted shutters 17. The air is deflected into the down-turned end of the duct by the inclined wind screen 15.
Patent GB-417807-A (GB)
Title: Improvements in or relating to electric switch setting mechanism for automatic control apparatus
IPC: H05B1/02
Filed: 1933-07-01
Abstract: 417,807. Mechanical relay and followup devices. STEVENS, A. H., 5, Quality Court, Chancery Lane, London.-(Bristol Co. ; Waterbury, Connecticut, U.S.A.) July 1, 1933, No. 18729. [Class 118 (ii).] Switch setting mechanism operates in dependence on the position of the pointer of a meter, such as a pyrometer, and the switches actuated thereby control circuits for maintaining the condition indicated by the meter. A cam 35 is mounted on a spindle 32 driven at a constant speed by a motor (not shown) and engages a roller 36 on a lever 39 which is pivoted at 37 and engages a pin 42 carried by the end of a T-shaped lever 40 pivoted on a spindle 43. Also mounted on the spindle 43 are two bell-crank levers 45, 46 coupled by springs 47, 48 to the lever 40 and normally resting against a stop pin 49 on the lever 40. The levers 45, 46 have arms 51, 52 adapted when tilted to engage pins 53, 54 on a pivoted link 55 connected to a support 58 of a mercury switch 59. A selecting lever 27 pivoted at 28 has a roller 29 at its free end resting on a cam 30 rotating with the spindle 32. At the other end of the selecting lever 27 a laterally projecting finger 50 is provided which, according to the amount the lever 27 is tilted under the influence of the cam 30, obstructs either lever 45 or 46. Then when the cam 35 tilts lever 40, the unobstructed lever is actuated through its spring coupling 47 or 48 to tilt the mercury switch in the corresponding direction. The amount of tilting of the selector lever 27 is determined by a lever 20 pivoted at 21 and having its free end resting under a platform 26 on the lever 27. The lever 20 is carried by a rotatable bracket and can be set by means of a pointer (not shown) to the reading on the meter scale 13 where control is desired. The recording pointer 12 of the meter carries a steeple 23 arranged under the edge of the scale 13. When the needle 12 reaches the point at which the lever 20 is set, the steeple 23 lies over the platform 22. This prevents lever 20 from tilting and thus through the medium of platform 26 prevents lever 27 from tilting anticlockwise when the low part of cam 30 is reached. The finger 50 thus obstructs lever 46 and so cam 35 causes lever 45 to tilt and turn the mercury switch into the position shown. When the steeple is not over the platform 22, the lever 27 tilts further and finger 50 obstructs lever 45 and the mercury switch is operated in the reverse direction. The mercury switch may control circuits to maintain the condition whereby the needle 12 is maintained at the same setting as the lever 20. Modifications are described in which levers 45, 46 and platform 22 are stepped to give a series of stages in the tilting of the switch carrier 58 which in these cases carries a number of mercury switches.
Patent GB-988701-A (GB)
Title: Improvements in or relating to disc brakes
IPC: F16D55/227
Filed: 1961-05-24
Abstract: 988,701. Disc brakes. DAYTON STEEL FOUNDRY CO. May 24, 1961 [May 25, 1960], No. 18755/61. Heading F2E. In a spot-type disc brake comprising a fixed torque member 25 defining opening adjacent opposite sides of the brake disc 20, a pad of friction material 45 arranged for transverse movement in each opening and being restrained by torque arms 30, 31 against rotational movement, a caliper housing is adapted for axial movement on the fixed torque member by bolts 55 and pressure means (e.g. hydraulic piston and cylinder mechanisms 60) is provided to apply a braking force and causes frictional engagement of the pads against the disc. As shown in Fig. 3 the caliper housing 50 is slidable in operation and is adapted to be pivoted about one of the bolts 55 when the other bolt is being removed to enable the pads 45 to be withdrawn and replaced when worn. An automatic adjusting and retraction device is incorporated in the hydraulic piston and cylinder applying mechanisms 60. This takes the form of a main brake applying piston 70 having a secondary piston 75 positioned coaxially within the main braking applying piston 70, the secondary piston 75 having a cap bolt 80 provided with an enlarged head 81 positioned for limited movement in an end plate 71. When hydraulic pressure is applied to the main piston 70 the pistons 70 and 75 are carried towards the brake disc to apply braking pressure thereto against the reaction of a retraction spring 82. Wear of the brake pads 45 and deflection of the housing 50 is compensated for by relative movement between the main and secondary pistons, the displaced relative positions of the two pistons being held by the frictional effect of a split friction ring 76 provided on the secondary piston 75. A generally U-shaped dust cover 68 is secured to the torque member 25 adjacent to the caliper housing 50 to protect the cylinder 60 against dirt and dust. Specification 982,567 is referred to.
Patent GB-463621-A (GB)
Title: Improvements in reflectors for vehicle and like lamps
IPC: F21S8/10
Filed: 1935-07-01
Abstract: 463,621. Reflectors for vehicle &c. lamps. NIELSEN, F. July 1, 1935, No. 18782. Convention date, June 30, 1934. [Class 75 (ii)] A reflector, for a vehicle or like lamp, of the kind consisting of two half mirrors each lying on one side of a longitudinal plane and comprising two parabolic sections JT, TE of different parameters merging into one another and having separate foci A, B, is characterized in that for each half of the reflector, in a vertical plane, the foci are displaced vertically or substantially vertically and the common axis of generation of the two parabolic sections lies between the axes AC, BD of the said sections but never coincides with either of them. One or both of the inner parabolic sections may be replaced by continuous or discontinuous surfaces of such configuration that, in a vertical plane, incident rays parallel to the optical axis do not fall in a space defined at its upper limit by the focus of the remaining parabolic section and at its lower limit by the extreme lower end of the light source. Such a surface may be generated by means of the tangent TO, or by means of a circular arc TU with centre Z. The axes of generation of the two half mirrors may be coincident or parallel, and the foci of one half mirror may coincide with the corresponding foci of the other half mirror, or be spaced horizontally therefrom by a distance approximately equal to the longitudinal length-of the light source. The latter may comprise an electric light bulb with a plurality of selectively operable filaments, and is accommodated within the space defined by the focal lines of the two half mirrors. The surfaces of the two half mirrors may be made circular in cross-section by rotation about the axis of generation, but, in order that all reflected rays shall be below the horizontal, the cross-sectional curve may have normals which all lie beneath the light source or, at most, are tangential to it. Examples of such curves are archimedean spirals, evolvents about the circular or other cross-section of the light source, or curves approximating thereto. The radius vectors of the upper and lower half mirrors increase and decrease respectively from the vertical to the horizontal. Mechanical or electromagnetic means may be provided for moving the half mirrors in opposite directions longitudinally, either separately or simultaneously, for moving the light source laterally in an upward or downward direction beyond the axes AC, BD, or for tilting the whole projector upwards through a small angle. The Specification as open to inspection under Sect. 91 states also that the axis of generation may coincide with either of the axes of the two parabolic sections. This subject-matter does not appear in the Specification as accepted.