baber/WOPTO huggingface dataset:
Patent GB-563926-A (GB)
Title: Improvements in or relating to exposure controlling means for a photographic camera
IPC: G03B7/06
Filed: 1943-05-20
Abstract: 563,926. Cameras. KODAK, Ltd. May 20, 1943, No. 8041. Convention date, June 6, 1942. [Class 98 (i)] [Also in Group XL] An attachment for connection to a camera objective, where it forms part of exposure controlling means, comprises a reflecting member which is angularly adjusted upon operation of the diaphragm-adjusting means. As shown, a light-sensitive cell and meter 13 having a reflector 14 for directing light on to the cell is attached to a camera body by a shoe 12 engaging in a slideway. The meter pointer is arranged at the focus of a cylindrical lens 16, and is arranged as described in Specification 559,412. A housing 22 detachably connected to the objective includes a pivoted mirror 33 which is angularly adjustable in accordance with the setting of the diaphragm, the speed of the shutter, and the speed of the film, and which reflects an image of the pointer into the viewfinder 4. In the construction shown, the housing 22 is carried by a ring 18 secured to a ring 19 which is screwed into the front of the objective. The mirror 33 is carried by a lever 50 which is pivoted at 31 and has a lug 51 engaging the end of a screw 52 adjustably carried by a second lever 30 which is also pivoted at 31. The lower end of the lever 30 engages a cam 28 on a ring 26 rotatably mounted in the ring 18 and connected to the knob 27 so that it is rotated with the diaphragm adjusting ring 9. The screw 52 is threaded into a spindle 54 attached to an adjusting knob 45 and screwed into a sleeve 55 secured to a lug 56 on the lever 30. In use, the head 47 of the screw 52 is turned to bring an index line on it into register with the appropriate film speed graduation on the face of the knob 45, and this knob is then turned so that a pointer 44 indicates the shutter speed on a second scale carried by it. The diaphragm is then adjusted, this causing the cam 28 to rock the lever 30 which, by the previously-adjusted abutment screw 52, rocks the lever 33, so causing vertical movement of the image of the index seen in the finder 4. Adjustment of the image to coincidence with a fixed pointer determines the correct diaphragm setting. In a modification, the abutment screw 52 is replaced by a cam which is carried by the lever 30 and engaged by the lever 50, and is similarly adjusted in accordance with the shutter and film speeds. The camera may have a variable speed shutter constructed as described in Specification 529,297. The application of the invention to a kinematograph camera is illustrated.
Patent GB-609456-A (GB)
Title: Securing and releasing detachable containers of aircraft
IPC: B64D37/12
Filed: 1946-04-15
Abstract: 609,456. Releasing bodies from aircraft. MARTIN, J., and MARTIN-BAKER AIRCRAFT CO., Ltd. April 15, 1946, No. 8046. [Class 9 (ii)] To prevent a petrol tank or like container fouling the structure of an aircraft on release, the clamping device for the container embodies a piston and cylinder between which explosion gases from a cartridge act to release the clamping device and positively to expel the container away from the aircraft. In the form shown, the container to be jettisoned has mounted in it wooden blocks 9 which are held to the clamping device by the tie bolt 10, this bolt being joined by a universal coupling to the bottom of the cylinder 22, which is supported on an assembly depending from the wing by claw members 11 held together by the strips 24. On exploding a cartridge 38 in a container 37, mounted on the side of the cylinder by drawing a cam-like trigger and sear member 42 under the spring-loaded firing pin 39, the explosion gases act between the cylinder 22 and piston 28 to force the piston first to disengage the claw members by engaging its conical head 27 with abutments in the claw members and shearing the bolts of the tie strips 24 and then to engage in the cup-shaped member 36 to expel the tank, the expelling force being applied even as the tank is swept back by the aircraft slipstream, due to the universal coupling above the tie bolt.
Patent GB-562237-A (GB)
Title: Improvements in or relating to upsetting or header mechanism
IPC: B21K1/44
Filed: 1942-06-12
Abstract: 562,237. Forging. WILCOX, R. L., and WATERBURY FARREL FOUNDRY & MACHINE CO. June 12, 1942; No. 8048. [Class 83 (iv)] Heading or upsetting machines, in which a number of punches are mounted on a slide on the main punch slide to co-operate in succession with a single die, have the slides movable in horizontal planes. The main slide 11 slides in guides 14, 15 and has clamped to it bars 13 that slide in the frame. The slide 16 moves on the slide 11 or on a backing plate 17 fixed thereon and has a lug 18 projecting into a recess 52 and a lug 19 projecting into a recess 53. Bars 20 parallel to the main shaft of the machine are clamped in the slide 16 and slide in bores in the slide 11 to bring the punches 31, 32 alternately into line with the die (not shown). This movement is effected by an oscillating shaft 46 carrying a crank-pin 47 linked at 48 to a pin 49 in the lug 18. The oscillation is through rather less than 180 degrees and the movement of the slide is limited by adjustable stops, the crank-pin being at dead centre when the slide engages the stops so that locking means is not necessary. A groove in the slide 16 receives ribs 23 on backing plates 22, one for each punch, and vertical grooves on the 'plates 22 receive ribs 35 on the punch holders 33, 34 thus permitting vertical and horizontal adjustment of the punches. The parts are clamped after adjustment by bolts 24 that pass through clearance holes in the parts 22, 33 and 34 and by a bolt 27 passing with clearance through lugs 42 and through half lugs 26 in the backing plates. The adjustments are effected by screws 28, 29, 37 and 38. The punches are notched to receive the inclined ends of the heads 43 of clamping bolts secured by hollow screws 44 and nuts 45. A hard plug 30 may be inserted in the slide 16 to receive pressure from the plates 22. The thrust on the punches is taken up on four widely spaced points above and below and to each side, the thrust being resolved along the dotted lines 51 towards the ends of the bars 20.
Patent GB-469494-A (GB)
Title: Improvements in liquid filtering apparatus
Filed: 1936-03-18
Abstract: 469,494. Filters. HOVEMAN, W. A., and HOVEMAN, F. C. March 18, 1936, No. 8099. [Class 46] In water-filtering apparatus of the type comprising horizontal layers of sand or like material, and provided with siphons for removing wash-water after cleaning of the filter, each siphon is accommodated wholly within the washwater channel, and is constructed to serve the two sections of the filter bed on opposite sides of such channel. The discharge of the siphons is automatically controlled by the differential hydraulic pressure set up in the filter bed during the cleaning operation. In one form, a shelf 1 extends across the upper part of the wash-water channel 2, and is surmounted by an arched roof 3 forming an enclosed chamber 7. Two banks 5 of concrete form a weir leading into a trunk or passage 6 of rectangular section. Wash-water passes from the filter bed sections 8 into the chamber 7 through flared slot-like passages 9, and thence through the trunk 6, an opening in the shelf 1, and a siphon tube 11 depending into a sealing cup or trough 13. In a modification, the trunk 6 and tube 11 are combined in the form of a single siphon pipe with an upper bell-mouth, while in a further modification constructed wholly of metal parts and particularly applicable to pressure filters, the chamber 7 is of mushroom shape, with a depending siphon pipe dipping into a cup. The siphons are controlled by air vents 16 fitted with check valves and connected to a common main pipe fitted with a regulating air valve, which is controlled automatically by a differential pressure device comprising a diaphragm or piston, the opposite sides of which are connected respectively to the underside and to the interior of the filter. When the pressures are equal, the regulating valve is open, but when cleaning water is passing in a reverse way through the filter, the valve is closed. The valve may be constructed to operate after sufficient time has elapsed to ensure resettling of the filter bed sand.
Patent GB-235669-A (GB)
Title: An improved check valve device for high pressure fluids
IPC: F16K15/06
Filed: 1924-03-31
Abstract: 235,669. Tudor, H., (Heywood, C. F.). March 31, 1924. Check lift valves.-A check valve is formed with a projecting circular ridge which engages with the plane surface of a vulcanite or other slightly impressionable seating; or the valve surface may be plane and the seating formed with a projecting ridge. The casing A is fitted with a screwed nipple B at one end and with a pipe union at the other end. The nipple B is formed at its inner end with a tube b<1> surrounded by a seating E of vulcanite, vulcanized fibre, rubber compound &c. The valve member F is hollowed to provide a sharp ridge f which coacts with the seating. The body of the member F may be square in section to provide a passage for fluid to the pipe D. The valve is applicable in cases in which gas or liquid is supplied under pressure through the nipple B and valve F to a storage vessel. If used with containers from which fluid is exhausted, the valve is kept on its seating by a spring.
Patent GB-572900-A (GB)
Title: Improvements in or relating to fire-back domestic hot water boilers
IPC: F24B1/183
Filed: 1943-05-25
Abstract: 572,900. Hot-water boilers. MOSS, H. May 25, 1943, No. 8286. [Class 64 (i)] A fire-back boiler 1 is provided with an internal flue 2 and with fire tubes 4 passing from front to back, entirely surrounded by water. Reference has been directed by the Comptroller to Specification 7883/10, [Class 64 (i)].
Patent GB-402411-A (GB)
Title: Braun tube, more particularly for television purposes
IPC: H01J29/18
Filed: 1932-03-21
Abstract: 402,411. Fluorescent screens. ARDENNE, M. VON, 19, Jungfernstieg, Lichterfelde-Ost, Berlin. March 21, 1932, No. 8301. Convention date, March 27, 1931. [Class 98 (i).] In fluorescent screens of cathode-ray tubes for television &c. purposes, potassium waterglass is used as the binder for the fluorescent substance, preferably cadmium tungstate. The binder and substance may be mixed together but the binder is preferably painted on the glass or other base to form an even layer and the fluorescent substance is then applied in finely divided condition as by spraying. To allow charges to leak away, a conductive layer is provided in the screen and comprises the binder or a thin coating produced by cathode atomization or by spraying on carbon. To prevent slowly moving electrons reaching the screen, it is provided with a transparent protective layer of potassium water-glass or aluminium. Specifications 206,081, [Class 39 (i), Electric lamps, Arc &c.], 387,536, [Group XL], and 402,418 are referred to.
Patent GB-558017-A (GB)
Title: Improvements relating to holders for double-ended electric lamps
IPC: H01R33/08
Filed: 1942-06-17
Abstract: 558,017. Lamp-holders. BRITISH THOMSONHOUSTON CO., Ltd., and EDINBOROUGH, E. R. June 17, 1942, No. 8312. [Class 38 (i)] A holder for a tubular lamp has a socket 4 with oblique surfaces 6 to guide bayonet pins on the lamp into notches 5 in the socket which is mounted on a floating member 3 that telescopes within a housing 1 against the pressure of a spring 12. The member 3 also has rotational freedom limited by the engagement of a terminal block 19, when in place in the opening 20, with a gap 16 in the skirt 17 of the member. The contacts consist of plugs 9 in an insulating block 7 mounted on a pin 8, the leads 21 being secured in lateral holes in the plugs 9 by screws 10. A seating 23 is furnished with screw holes 24, whereby it may. be secured to a fitting. The springs in the holder at each end of the fitting serve also to mount the lamp resiliently. The terminal block may be passed through a rectangular hole in a reflector before securing the seating over the reflector.
Patent GB-632633-A (GB)
Title: Improvements in or relating to the evaporation of water from concentrated solutions of calcium nitrate
Inventor: AKEN JOHANNES S A J M VAN
IPC: C01B21/46
Filed: 1946-09-16
Abstract: A saturated or nearly saturated aqueous solution of calcium nitrate is heated under a pressure high enough to prevent boiling and then expanded to a pressure below the vapour pressure of the heated solution before the expansion, the temperature before and the pressure after the expansion being adjusted so as to give a moist powder containing less than 10 per cent of water.  A product having 7.6 per cent of water is obtained after expanding to 1 atmosphere a calcium nitrate solution containing 23 per cent water which has been heated up to 290 DEG  C. under 18 atmospheres. The powder-like product can be dehydrated in a drying drum.
Patent GB-1486978-A (GB)
Title: Mineral-mining machine
IPC: E21C29/00
Filed: 1975-02-28
Abstract: 1486978 Mineral-mining machines COAL INDUSTRY (PATENTS) Ltd 3 Feb 1976 [28 Feb 1975] 8436/75 Heading E1F In a hydraulic circuit of a mineral-mining machine having a driven hydraulic pump 2 for feeding pressure fluid to a hydraulic drive motor 6 arrangeable to drive the machine's haulage mechanism 8-there is provided means 11 sensitive to the pressure of the pressure fluid feed to the motor to control actuation of a brake 12 on the machine so that in use of the machine, when the sensed pressure is below a preselected value the brake is applied. Preferably said means includes a hydraulic control valve 20 sensitive to the pressure fluid feed to the motor and arranged to block the feed of pressure fluid, when the sensed pressure is below the preselected value, to the brake 12, which is biassed, e.g. by spring 16, towards the applied position and is caused to be released by pressure fluid supplied from a second pump 7 to means, e.g. piston cylinder units 13 acting like the spring 16 on the pad 15 of the brake. The pump 2 may comprise a parallel arrangement of a fixed delivery pump 2 and a variable delivery pump 4. The pump 4 is normally used during cutting operations when the machine is traversed along the face at low speeds and both pumps are used when the machine is flitted along the face at relatively high speeds.
Patent GB-566876-A (GB)
Title: Improvements in or relating to drinking tubes
IPC: B65D77/28
Filed: 1943-05-27
Abstract: 566,876. Drinking straws. BARNSLEY, O. G. May 27, 1943, No. 8466. [Class 14 (ii)] The upper end of a drinking straw to be placed in a stoppered bottle of beverage is sealed by pinching or by means of a glass ball cr bead held in position by paraffin wax so that when the stopper is removed the straw by its buoyancy will project from the mouth of the bottle for use. The straw is made of waxed paper to withstand prolonged immersion.
Patent GB-1449589-A (GB)
Title: Roll
IPC: F16C13/00
Filed: 1975-02-28
Abstract: 1449589 Rollers ESCHER WYSS Ltd 28 Feb 1975 [10 April 1974] 8542/75 Heading F2U A flexure-compensating roller 1 comprises a shell 3 rotatable in bearings 6 and supported hydrostatically on a bearer 5, a second bearing 10 being provided at each end of the shell with its inner race secured on the shell and its outer race secured to the bearer by a part 11. The shell 3 may co-operate with a rigid roller 2 and supported hydrostatically on piston-like elements 4 guided in bores in the bearer 5; alternatively, the shell may be supported hydrostatically by a pressure chamber between the shell and bearer enclosed by seals. The bearer 5 is held against rotation by an element engaging the left end while the shell 3 is driven by a part 12 of a shaft 13. The shell may be progressively tapered at its ends.
Patent GB-1415825-A (GB)
Title: Method for the preparation of difluoropyridines
IPC: C07D213/77
Filed: 1974-02-26
Abstract: 1415825 Difluoropyridines OLIN CORP 26 Feb 1974 8598/74 Heading C2C A method of preparing difluoropyridines and substituted difluoropyridines comprises (a) diazotizing a diaminopyridine compound of the formula wherein each R is independently selected from alkyl of 1 to 4 carbon atoms; nitro; alkoxy of 1 to 4 carbon atoms; and halogen and n is 0 or an integer of 1 to 3; in the presence of hydrogen fluoride and sodium nitrite to form a reaction mixture containing the pyridyl bis-(diazonium fluoride) salt of the diaminopyridine compound and (b) then heating the reaction mixture to decompose the pyridyl bis-(diazonium fluoride) salt to the corresponding difluoropyridine.
Patent GB-199166-A (GB)
Title: A new or improved receptacle for the liquid fuel used in oxygen blow-pipe burners
IPC: F23D99/00
Filed: 1922-03-24
Abstract: 199,166. Fernholz, E. March 24, 1922. Blowpipe burners; oil supply fittings.-A receptacle for liquid-fuel for use in oxygen blowpipe burners is provided with a stopper 12 into the lower end of which is loosely screwed a plug 7 having a conical end which contacts with a conical surface 8 in the stopper 2, a passage 14 communicating with the bore 15 of a lug 16 and with the conical surface 8 and the upper edge of the threaded portion of the stopper 2. A steel tube 10 is soldered to the plug 7 and is provided at its lower end with a plug 11, having a central aperture 12 and an opening into which is screwed a plug 13, the screw-thread not being completely liquid-tight. A tube 23, leading to the oxygen connection of a blowpipe burner, is attached to a nipple 17, which is screwed into and soldered to the lug 16 to the other end of which is similarly attached a union 18 connected to a nipple 19 to which is attached a tube 20 leading to the pressure-reducing valve of an oxygen flask. A pipe 22 is soldered into a passage 21, communicating with a space in the stopper 2 above the plug 7, and is coiled round the tube 23 and leads to the fuel connection of the blowpipe burner, in which the fuel is conducted through a gasifier 24 into a suction chamber 25, a shutting-off device 26 operable by a hand-wheel 27 being provided. The stopper 2 and a packing-ring 3 are held in position by a screw 6 carried by a stirrup 4 pivotally mounted on the neck of the receptacle. In use, oxygen flows through the tubes 20, 23 to the burner and through the passage 14 into the receptacle 1 from which liquid fuel is forced through the tube 10, the bore 9 of the plug 7 and the pipe 22 to the burner.
Patent GB-1384638-A (GB)
Title: Ambulatory stimulator
IPC: A61N1/36
Filed: 1972-02-24
Abstract: 1384638 Ambulatory stimulators PHILIPS ELECTRONIC AND ASSOCIATED INDUSTRIES Ltd 24 Feb 1972 [27 Feb 1971] 8626/72 Heading A5R Apparatus for the stimulation of ambulatory muscular activity comprising an electric switching element 19, Fig. 4, a pressure-sensitive mechanism for location under the ball of one of the patient's feet, a respective electrode assembly 27, 32 for each leg, and a control circuit for activating the electrodes 27, 32 alternately by means of electric pulses in response to actuation of element 19 by said mechanism so that movement of said one foot can stimulate each leg in turn. The pressure-sensitive mechanism may be formed as a shoe insert and comprise a resilient material having open ducts and enclosed between cover layers, or may comprise a coiled or folded hose, the mechanism being coupled by a hose to a chamber having a piezo-electric element, forming the switching element, disposed in a window of the chamber. When element 19 receives a pressure pulse, control unit 20 supplies power from a battery 21 to a high-voltage generator 26 and to a switch 24 controlled by an astable multivibrator 23 to pass pulses from generator 26 to electrode 27 at the multivibrator repetition-frequency, e.g. 5oHz. After termination of the pulse from an element, because the foot under which the pressure-sensitive mechanism is lifted, or at latest after a time, e.g. 2 seconds, determined by unit 20, unit 20 applies a switching pulse to control unit 28 whereby multivibrator 29 controls a switch 30 to supply pulses from generator 26 to electrode 32 their pulse train terminating, e.g. after 2 seconds, by unit 28 acting on switch 30 via unit 29, the next cycle commencing at the next pulse from element 19. The pulses at electrodes 27, 32 may be from 0 to 100 volts at a maximum of 6 mA and 400 microseconds duration. Each electrode assembly 27, 32 may comprise a central electrode 35, Fig. 5, contacting the skim via a sponge 36 soaked in water or electrode paste, with an electrode 37 surrounding electrode 35. Electrode 37 has an electrically conducting gauze 39 embedded in elastic material 38 carrying a layer of conducting rubber 40 at the side facing the skin.
Patent GB-250236-A (GB)
Title: Table for rontgen ray examinations and photography
IPC: A61B6/00
Filed: 1926-03-30
Abstract: 250,236. Otto, W. April 3, 1925, [Convention date]. R÷ntgen-ray apparatus. - A table. 1 for supporting a patient, of the kind which is pivoted nearer one end than the other about an horizontal transverse axis 3 so that it may be used either in the vertical position as shown, or in an horizontal position with its legs 7 on the ground, and which carries beneath the longer portion 1<a> a casing 2 containing the R÷ntgen-ray apparatus, and upon the shorter portion 1<b> a counterweight 5, is characterized in that the centre of gravity of the counterweight lies at such a distance above the table that the apparatus is balanced or tends to turn into and remain in the vertical position. The counterweight may comprise in addition to the part 5 at the end of the table a part 4 above the table connected to the part 5 by a bar 6; or it may take the form of a plate extending upwards from the plane of the table.
Patent GB-1047786-A (GB)
Title: Improvements in or relating to electromagnetic contactors
IPC: H01H50/64
Filed: 1964-03-02
Abstract: 1,047,786. Electromagnetic switches. SQUARE D CO. March 2, 1964 [March 8, 1963], No. 8659/64. Heading H2B. In an electromagnetic contactor, the armature 15 and coil 10 are mounted between front and rear portions 7b, 4 of a three-part mounting frame 2, 6, 7, and an insulating base 5 carrying at least one fixed contact 28 and a forwardlyextending pivot pin 35 is mounted in overlying relationship to the coil and armature on the front portion 4. A rocker assembly 36 carrying a contact 51 and mounted on the pivot pin 35 is coupled to the armature 15 by a pin and slot connection 61, 62. The armature is urged away from the electromagnet by a spring- biased rod 65 which projects through the top plate 2 of the frame. The moving contact is carried between two plates 38 mounted on opposite sides of a rocker 37 pivoted at 35. Rivets 39 secure the plates together and provide, in conjunction with apertures 40, 41 in rocker 37, a lost-motion coupling between the rocker 37 and plates 38. Slots 42 in the plates 38 permit them to move vertically if the rocker 37 continues to move after the moving contact has engaged one of the fixed contacts. A wiping action is thus provided. A spring 44 acting between rocker 37 and plates 38 centres the plates about pin 35. The upper end of the biasing rod 65 bears on one end of an interlocking rocker 72 whose other end may co-operate with the biasing rod of an identical contactor to prevent simultaneous actuation. Electrical interlocks between the contactor and associated equipment are provided in the form of microswitches 75, 76. Microswitch 75 is actuated by a projection 84 of rocker 37 and microswitch 76 by the armature 15. Instead of the changeover contact set shown, one of the fixed contacts may be replaced by a suction cup (Figs. 18 to 20, not shown) to provide a variable time delay. In an alternative arrangement (Figs. 22-24, not shown) the suction cup is controlled by an electromagnet, energization of which determines whether or not the suction cup applies a time delay. To prevent operation of microswitch 75 whilst the movable contact is still held by the suction cup an additional actuating member, which rotates with the plates 38 but cannot move vertically, is mounted on the pin 35 (Fig. 21, not shown).