baber/WOPTO huggingface dataset:
Patent GB-654915-A (GB)
Title: Improvements in or relating to devices for synchronising electrical flash lighting devices with photographic camera shutter mechanism
IPC: G03B9/70
Filed: 1948-11-20
Abstract: 654,915. Photographic camera shutters combined with flashlights. TECHNICA CAMERA, Ltd., and BORAM, F. Nov. 20, 1948, No. 30219. [Class 98 (i)] Mechanism for incorporation in a photographic camera for synchronizing the roller blind shutter of the camera with electricallyoperated flashlight apparatus, comprises a contact member adapted to be moved by operation of the shutter operating button of the camera towards a second contact member which is in turn movable towards the first contact member by a member automatically moved by the shutter mechanism when the shutter has opened to a pre-determined extent, movement of both said contact members being required to bring them into contact to complete the flashlight circuit. As shown, the shutter release spring on which bears a rod 5 operated by the shutter release and which is arranged on the outer bottom wall of the shutter frame of a camera of the kind sold under the Registered Trade Mark " Leica," or a copy thereof, is replaced by a spring 1 having an arm 3 bearing a contact pip 4 on its lower face, while the slow speed spring 7, which is pressed upwardly by the cam 18 when the first shutter blind has opened the exposure aperture, has a contact strip 10 bearing a pip 13 on its upper face and secured to the spring, from which it is spaced by an insulated strip, by rivets 8 passing through insulated bushes 9. A tail 14 of the strip 10 is arranged to engage the inner insulated pole of a flashlight circuit plug socket carried by the camera bottom which, and hence the contact 4, is connected to the outer pole of the socket. The movement of the spring 1 is limited by a nose 20 on its arm 3 engaging a stop 21 so that while on depressing the camera release the contact 4 moves downwardly, the flash circuit is not closed until the cam 18 of the slow-speed mechanism moves the spring 7 upwardly and hence contact 13 against contact 4, so that the flashlamp is energized at the maximum shutter opening. Alternatively, the shutter release and slow speed springs are not altered, but are engaged by the insulated tips 29 of push-rods 28, 27 which are secured to an L-shaped strip 25 and a straight strip 24 mounted on an insulating plate 23 and carrying the contacts 4, 13 respectively, the two strips being connected to the concentric poles 16, 15 of a flashlight circuit jack. The travel of the strip 25 is limited by an adjustable screw 30. A bottom cover recessed to enclose the synchronizer switch and apertured to receive the jack is provided for the camera. In a modification, the strip 25 is replaced by a straight strip and both it and the strip 25 engage a stationary adjustable contact strip.
Patent GB-222004-A (GB)
Title: A machine for making segmental cores for use in the casting of wheels and other circular bodies
IPC: B22C13/12
Filed: 1923-12-01
Abstract: 222,004. McRae, R. D. Dec. 1, 1923. Core-making; core-boxes.-Segmental cores for wheels &c. are produced in an adjustable machine and core-box. A table 12 of angle corresponding to the segment required is positioned on a support 8 and side plates 6, 7, hinge jointed on a column 2, are swung against the edges of the table and clamped by wedges 13<a>. The side plates are supported on a distance collar 5 and the column has a vertical screw adjustment 3, 4. A boss member is inserted at 15 and sectional flange members 16 are placed on the table, corresponding members being afterwards placed on top of the core flush with the tops of the. side plates which are set according to the thickness of core required. L-shaped sections 17 for the periphery of the core are placed against the flange member, a board 18, cut to the radius required, is superposed and the whole are clamped by an angle block 19, distance piece 20, and screw 24. Screws 11 clamp the table on the support in conjunction with the side plates.
Patent GB-1409628-A (GB)
Title: Nickel base alloy containing hafnium
IPC: C22C19/05
Filed: 1973-06-26
Abstract: 1409628 Nickel base alloy AVCO CORP 26 June 1973 30314/73 Heading C7A An alloy of composition:- The alloy may be vacuum melted and vacuum cast and may be heat-treated by holding at 2,050‹F for 2 hours, air cooling, reheating to 1,550‹F for 4 hours air cooling, reheating to 1400‹F for 16 hours and air cooling and may be used for the manufacture of turbine blades.
Patent GB-396673-A (GB)
Title: Improvements relating to door-closing devices
IPC: E05F3/20
Filed: 1931-11-02
Abstract: 396,673. Door-checks. THUILLIER, A., 31, Rue des Bois, Paris. Nov. 2, 1931, No. 30338. Convention date, Nov. 19, 1930. Void [Published under Sect. 91 of the Acts]. [Class 65 (i).] A fluid check device comprises a screw on which works a nut operating a piston in a check cylinder ; the device is preferably in the form of a hinge, as shown with the door open in the Figure. One part of the hinge has a barrel 3 in which fits a tube 2 forming the check cylinder. The other part has fixed to it a multiple-threaded screw 1 engaging a nut 5 which is integral with a check piston 8 ; the nut has wings 6 engaging in vertical slots in the tube 2 to prevent relative rotation. The piston is provided with a ball valve 18, and the lower end of the cylinder has an adjustable ball valve 11 for regulating the checking action. The valve 11 communicates with passages between the tubes 2, 3, formed by flats on the tube 3, leading to the annular space around the nut, from which the fluid passes through holes in the nut to the inside of the nut above the piston, being returned to the check cylinder through the valve 18 when the door is opened.
Patent GB-243546-A (GB)
Title: Improvements relating to belt, band or like conveyors
IPC: B65G39/16
Filed: 1924-12-18
Abstract: 243,546. Steel Belt Conveyors, Ltd., and Allen, W. H. Dec. 18, 1924. Band-retaining devices; idler rollers.-An endless conveyer belt is supported at intervals throughout its length by pairs of idler rollers 2 fixed to the opposite ends of a shaft 3 which is rotatably mounted in a sleeve 4 forming the outer end of a pivoted arm 5. The depending inner end 8 of the arm 5 engages over the projecting upper end of a vertical pin 9 fixed within a tubular socket 10 carried by a base 11. The weight of the arm &c. is taken by a ball 14 placed between the pin 9 and a plug screwed into the end 8. Four radial webs 15 connect the socket and base and enter gaps 17 in a depending flange on the end 8. The gaps are of such width that the arm can turn through an angle sufficient to place the rollers at right angles to the direction of travel of the belt. The arm 5 may be replaced by an arm having two diverging branches carrying a shaft on which three rollers are mounted. Where there is a change in the level of the belt, the bend may be produced by a number of sets of rollers 2, Fig. 4, mounted on parallel shafts 3 carried by a swivelling arm 5. An auxiliary arm 19, Figs. 5 and 6, may be attached to the arm 5. This arm carries a horizontal rod 21 having at each end an upstanding pin 22 on which is mounted a roller 23. The distance between the rollers 23 is slightly greater than the width of the belt.
Patent GB-680296-A (GB)
Title: Improvements in or relating to temperature-responsive switches
IPC: G01K5/16
Filed: 1949-11-28
Abstract: 680,296. Mercury switches. LURASCHI, A. G. Nov. 27, 1950 [Nov. 28, 1949], No. 30492/49. Class 38 (v) [Also in Groups XIII and XXXVIII] In a thermometer-type mercury switch wherein circuit is made between a contact 13 in a tube 10 and a contact 14, either in the bulb 11 as shown or in the tube between the first contact and the bulb, a constriction 15 is formed in the tube so that part of the mercury column may be isolated above the constriction and the contacts to adjust the operating temperature. Calibrations 16 on the tube 10 are such that to adjust the switch, it is warmed until the top of a continuous mercury column attains a calibration point indicating the temperature at which the element is required to operate. The column is then broken by cooling and the element is ready for use. The mercury column above the constriction 15 is shaken down before readjustment. In a modification, Fig. 2 (not shown), the contacts 13, 14 are sealed in the tube close together and just below the constriction 15 while the tube, a calibrated scale plate and wires connected to the contacts are contained, as a protection against liquid in which the element may be immersed, in a glass tube co-axial with the tube 10.
Patent GB-422080-A (GB)
Title: Improvements in or relating to the manufacture of aluminium fluoride
IPC: C01F7/50
Filed: 1933-11-03
Abstract: Aluminium fluoride is obtained by the treatment of aluminium fluosilicate with hydrofluoric acid.  The reaction may form a step in a cyclic process wherein aluminium oxide or hydroxide is first treated with excess of hydrofluosilicic acid at the boiling point to form the fluosilicate, and the latter then treated in the cold, with or without separation of the mother liquor, with aqueous hydrofluoric acid to precipitate aluminium fluoride and regenerate hydrofluosilicic acid.  An alternative cyclic process comprises the dry treatment of the fluosilicate with gaseous hydrofluoric acid, the absorption of the resulting gases (hydrofluoric acid and silicon tetrafluoride) in water, and the use of the hydrofluosilicic acid so obtained to produce the aluminium fluosilicate from aluminium oxide or hydroxide.  The aluminium fluoride may be dehydrated at temperatures between 100 and 600 DEG  C. in an aluminium vessel.
Patent GB-1113871-A (GB)
Title: Production of casein
IPC: A23J3/10
Filed: 1965-07-19
Abstract: A method of making a finely-divided substantially odourless and colourless substantially dry food grade casein comprises granulating a water-containing casein curd in the presence of added amounts of water to produce an aqueous slurry of casein containing up to 30% by weight of casein solids, subjecting the slurry to intense forces of impact and hydraulic shear and thereafter subjecting the slurry to high velocity flow whereby a substantially completely homogenized aqueous slurry is produced. The curd may be produced from milk by the action of hydrochloric acid.  The shear may be produced by the action of a rotor carrying spaced blades, then passing the slurry between a rotor and a stator at least one of which is serrated, and finally between a smooth-faced rotor and a smooth-faced stator; these zones may be contained within a colloid mill.  The slurry so produced may be spray dried.ALSO:A method of making a finely divided substantially odourless and colourless substantially dry food grade casein comprises granulating a water-containing casein curd in the presence of added amounts of water to produce an aqueous slurry of casein containing up to 30% by weight of casein solids, subjecting the slurry to intense forces of impact and hydraulic shear and thereafter subjecting the slurry to high velocity flow whereby a substantially completely homogenised aqueous slurry is produced. The curd may be produced from milk by the action of hydrochloric acid.  The shear may be produced by the action of a rotor carrying spaced blades, then passing the slurry between a rotor and a stator at least one of which is serrated, and finally between a smooth-faced rotor and a smooth-faced stator; these zones may be contained within a colloid mill.  The slurry so produced may be spray dried.
Patent GB-630612-A (GB)
Title: Improvements in drilling appliances
IPC: A61C1/14
Filed: 1946-10-15
Abstract: 630,612. Dental drills. SCHENK, F. Oct. 15, 1946, No. 30672. [A Specification was laid open to inspection under Sect. 91 of the Acts, April 21, 1947.] [Class 81 (ii)] [Also in Groups XIII and XXII] In a dental or other drill of the kind in which the tool 10 and its collet 11 are rotatable in a drill stock 12 which can be turned about pivots 13 to vary the angle of the tool relatively to the handpiece 14, and are rotated by a gear wheel 17 which turns about one pivot 13 and meshes with teeth 16 on the collet, the wheel 17 is driven by the drive shaft 22 through an intermediate shaft 20 with gear wheels 21, 19, so that the tool and drive shaft turn in the same direction. The tool is retained in the collet by a catch 61 held in a groove in the tool, Fig. 3, by a spring 62. The catch is moved to release the tool by a finger piece 65 guided on the handpiece 14 and provided with,a pin 67 which, in a suitable position of the finger piece, can enter any one of an arcuate series of holes 68 in the handpiece in order to lock the drill stock in adjusted angular position. The tool is cooled by cooling medium circulated through a recess 30 in the drill stock by pipes 35, 36 connected to bores in the pivots 13 and to a refrigerating apparatus (see Group XIII). The Specification as open to inspection under Sect. 91 comprises also the provision of a single gear wheel on the shaft 20 meshing with the drive shaft and the gear wheel 17. This subject-matter does not appear in the Specification as accepted.
Patent GB-687808-A (GB)
Title: An improved duplicating process
IPC: B41M1/12
Filed: 1950-12-18
Abstract: 687,808. Coated paper. NATIONAL CASH REGISTER CO. Dec. 18, 1950. [Dec. 22, 1949] No. 30739/50. Drawings to Specification. Class 96. [Also in Group XVI] A paper sheet for use as a copy sheet in a duplicating process (see Group XVI) is coated on one or both sides throughout its surface with a mixture containing finely divided particles, preferably white, of a solid inorganic material capable of acting as an adsorbent for and reacting with an organic compound, such as crystal violet lactone, to form a coloured mark. 20 per cent by weight of starch is cooked in water for 15 minutes at 200 degrees F., and the mass cooled to room temperature ; 1 part of attapulgite is dispersed, by the use of a ball mill or the equivalent, in 3 parts of water ; 4 parts of the attapulgite dispersion is mixed with 1 part of the starch solution to form the final mixture. Instead of attapulgite, there may be used Halloysite, magnesium trisilicate, or sodium aluminium zeolite material. Alternatively the inorganic material may be incorporated in the paper, being incorporated in the paper pulp stock as part of the furnish. In another form, the sheet is sensitised by treating it with a solution of tannic acid and drying it, this being suitable where the organic compound is furric ammonium sulphate.
Patent GB-534911-A (GB)
Title: Improvements relating to operating mechanism for type bars of typewriters
IPC: B41J7/02
Filed: 1939-11-28
Abstract: 534,911. Typewriters. PAILLARD & CIE., SOC. ANON, E. Nov. 28, 1939, No. 30949. Convention date, Dec. 10, 1938. [Class 100 (iv)] Type-lever action.-In actions comprising toggles for preventing rebound of the type-levers 18 from the rest 23, each toggle 8, 12 is pivoted to the framework 5, and to a lever 13 which is pivoted to the framework and is connected to the type-lever by means including a link 15, which lies normally in the plane of the togglepivots, and at right-angles to the shift-plane of the type-lever segment 3, the arrangement enabling shift to be effected without disturbing the toggles. Preferably, the type-lever is connected by a link 17 and a lever 16 to the link 15, and the key-lever is connected by a link 7 to the toggle-member 8. The link 15 is of sufficient length to permit shift of the segment without disturbing the parts of the action mounted on the framework. The Specification as open to inspection under Sect. 91 includes also the following :-In an action comprising a sub-lever co-operating with the key-lever and type-lever, rebound of the type lever is prevented by co-operation of a pin on the key-lever with a stop-lever which is connected by a link to the sub-lever. In another action, the type-lever and key-lever are connected to a bell-crank which co-operates with a rebound-preventing stop-lever connected to the key-lever. This subject-matter does not appear in the Specification as accepted.
Patent GB-979729-A (GB)
Title: Explosive gel composition
IPC: C06B47/14
Filed: 1962-08-13
Abstract: A stable non-separating explosive gel contains as essential ingredients 25-60% by weight of ammonium nitrate; 5 to 25% by weight of an alkali metal nitrate; 15 to 50% by weight of a sensitizer explosive; 5 to 25% by weight of water; 0'1 to 5% by weight of a polyacrylamide having an apparent molecular weight from one million to 25 million, and a hydrolysed free acid content of 0.1 to 8%; and from 0.01 to 0.05% by weight of a polyvalent metal inorganic salt cross-linking agent for said polyacrylamide. Preferred constituent ranges inside the above broad ranges are given in the Specification, and the weight ratio of polyacrylamide to the cross-linking agent is preferably from 8:1 to 12:1 whilst the weight ratio of ammonium nitrate to sensitizer is from 2.5:1 to 4:1.  The cross-linking agent is preferably a water soluble salt of an inorganic acid and aluminium, iron chromium or tin, e.g. aluminium sulphate.  The sensitizing explosives specified are smokeless powder, TNT or other nitrated equivalents, and cyclonite used in composite sensitizers with TNT, and it is indicated that the particle size of the sensitizer influences the amount used, and that as a rule less TNT will be required than smokeless powder for similar types of composition.  There is no critical order in which the constituents should be combined except for the cross-linking agent.  This should be added last.  Specification 825,367 and U.S.A. Specification 2,930,685 are referred to.
Patent GB-1346447-A (GB)
Title: Mobile machine for detecting lateral deviations of a railway track from a desired position
IPC: B61K9/08
Filed: 1971-07-02
Abstract: 1346447 Measuring railway track parameters F PLASSER 2 July 1971 [2 July 1970] 31046/71 Heading G1N In a self-propelled machine for determining the versine (lateral deviation from a desired position) of a railway track, three track-feeling axles 9a are biased laterally against one of the rails and their relative movements mechanically coupled to produce a resultant displacement which is converted into an electric signal. Three more track-feeling axles 9b may be biased against the other rail, their relative movements being converted into a second electric signal, whereby the versine of both rails may be measured simultaneously, but separately. In Figs. 4 and 12, lateral displacements of the track-feeling axles in the outer sets 6 are mechanically coupled via rocker arms 10 and Bowden cables 27 to respective ends of levers 22, the centres of which are connected to inductive displacement transducers 24, 25. The sheaths of the Bowden cables are fixed to the machine undercarriage 3 at their outer ends and, via rocker arms, to the intermediate trackfeeling axles at their inner ends, whereby lateral displacements of the intermediate axles are also coupled to the levers 22. Springs 23 tension the cables. In Fig. 8, the Bowden cables 27 are connected at their inner ends to respective leaf springs 31 fixed to the undercarriage 3 and carrying strain gauges 32 cemented on near their roots. Alternatively Figs. 10 and 11, (not shown) the sheaths of the Bowden cables may be fixed at both ends to the undercarriage 3, and the roots of the leaf springs mechanically coupled to the intermediate axles. Inductive displacement transducers, shown dashed in Fig. 8, comprising an armature 24 axially displaceable relative to two coils (28) in a stainless steel housing 25 may be used instead of the strain gauges. In another embodiment Fig. 2, (not shown) unsheated cables (19) are used instead of the Bowden cables in Fig. 4. The cables (19) are connected between the outer axles and respective ends of a lever (22), passing round rollers (21) coupled to the intermediate axles. In all the embodiments, the rocker arms 10  may be omitted. The strain gauges or inductive displacement transducer may be connected in a bridge circuit Figs. 5 and 7, (not shown) energized with stabilized alternating voltage and connected via an amplifier and filter to an indicator and recorder. The electric signals may be used to control a track aligning machine. The machine may also include means for measuring twist, gauge and joint position. The feeler wheels are hydraulically retractable from the rails during non-measuring transit.
Patent GB-458881-A (GB)
Title: Improvements in or relating to refractory glasses
IPC: C03C3/087
Filed: 1935-11-11
Abstract: 458,881. Glass manufacture. GENERAL ELECTRIC CO., Ltd., Magnet House, Kingsway, London, and PARTRIDGE, J. H., c/o General Electric Co., Ltd., Wembley, Middlesex. Nov. 11, 1935, Nos. 31146/35 and 11917/36. [Class 56] A refractory glass having a softening point not less than 1000 C. and capable of being founded at a temperature of 1600 C. consists of 50-70 per cent of silica, 25-35 per cent of alumina, 6-11 per cent of lime, and 1-6 per cent of magnesia, baryta, zinc oxide or thoria, or any or all of these oxides, and containing substantially no other constituents. The glass possesses the properties set out in Specification 426,129 and is particularly suitable for the envelopes of high-pressure metal-vapour discharge lamps. Compositions of a number of glasses are given in the Specification.
Patent GB-943354-A (GB)
Title: Monitoring device
IPC: H04L12/26
Filed: 1961-08-30
Abstract: 943,354. Telegraphy; transistor pulse circuits. ATLANTIC RESEARCH CORPORATION. Aug. 30, 1961 [Sept. 15, 1960], No. 31181/61. Headings H3T and H4P. [Also in Division G4] The invention provides a monitoring device for indicating the presence of telegraph distortion in a train of pulses. A meter shows the distortion either of each pulse, or of the pulse having the greatest distortion. Telegraph pulses fed in at 10 trigger transistor TR1 at the half-current levels, preset by resistors R23-R25. A space potential causes TR1 to be switched on, this switching TR2 off and TR3 on. The arrangement of TR1, TR2, TR3 is such that they switch rapidly. As TR3 turns on the left side of capacitor C2 is placed substantially at earth potential and the right side at a positive potential. Diodes D2, D3 isolate this potential. While the space pulse is present capacitor C2 discharges through resistors R16, R14 and 16, the latter being preset so that the charge falls to below a certain level if the space pulse has the correct or longer length. If the space pulse is too short (i.e. if the mark pulse is too long) TR3 reverts to its off state before C2 has discharged to that certain level with a result that as the left plate of C2 returns to battery potential the right plate drops rapidly to zero, clamped by D2, and a negative pulse passes via C3 to TR4. If this pulse has sufficient amplitude, i.e. if the mark pulse is sufficiently distorted and C2 has discharged by too small an amount, TR4 is triggered on. Meter M is deflected while TR4 is on so that normally the needle deflects for each distorted pulse received. If, however, switch 18 is closed TR5 causes TR4 to be locked on, subsequent to the reception of a distorted pulse, and meter M then gives a steady indication. In order to measure distortion in spacing pulses switch 13 is reversed. A second embodiment, Fig. 2 (not shown), illustrates apparatus having two channels, one for detecting spacing distortion and one for marking distortion. The presence of distortion in either channel causes a relay to pull up and a lamp to be lighted.
Patent GB-443169-A (GB)
Title: Improvements in or relating to the mouthpieces of tobacco pipes
IPC: A24F7/00
Filed: 1934-10-31
Abstract: 443,169. Tobacco pipes. LEITCH, A. K., 7, Cawdor Street, Nairn. Oct. 31, 1934, No. 31244. [Class 130] An attachment for a pipe mouthpiece 4 is formec of a single T-shaped piece of sheet metal having a leg portion 2 which is bent upwards to contact with the upper palate of an artificial denture and a crosspiece 5 bent around the mouthpiece near its end to form a stop for the lower teeth. The leg portion 2 of the T is wider than the crosspiece 5. The attachment may be of stainless steel or aluminium.