baber/WOPTO huggingface dataset:
Patent GB-1370681-A (GB)
Title: Servo control apparatus
IPC: F15B11/10
Filed: 1971-02-10
Abstract: 1370681 Fluid-pressure servomotor systems JOSEPH LUCAS (INDUSTRIES) Ltd 25 Jan 1972 [10 Feb 1971] 4345/71 Heading G3P Increased pressure in a control line 24 of a servo-apparatus lifts a valve 29 to allow flow through a restriction 22 and a non-return valve 23 to an exhaust line 31, the pressure drop across the restriction eventually causing displacement of a servomotor piston 14 against a spring 13. Pressure stored in an air or spring-loaded accumulator 32 provides a quick return movement of the piston when the control pressure falls. The piston has its travel limited by adjustable stops 17, 18 and is connected to the swashplate 11 of an axial piston rotary hydraulic machine. A plunger 25 and a spring-loaded plate 27 connect the control line 24 to the ball closure 29.
Patent GB-736117-A (GB)
Title: Improvements relating to ceramic dielectric materials
Inventor: SHEN TZU EN
IPC: C04B35/468
Filed: 1953-02-17
Abstract: Ceramic dielectrics, in percentages by weight relative to the total weight of titanate and stannate, contain barium titanate 90 to 98; calcium stannate 10 to 2; and calcium oxide 0.6 to 1.6. They are prepared by firing either a mixture of barium titanate, calcium stannate and calcium oxide, or a mixture of barium titanate, stannic oxide, and calcium oxide.  In place of calcium oxide, a compound giving the oxide on firing, can be used.  Fluxes may also be present, though preferably not.
Patent GB-249828-A (GB)
Title: Improvements in or relating to electric hammers
IPC: H02K33/12
Filed: 1926-02-16
Abstract: 249,828. Central Electric Tool Co., (Assignees of Weyandt, C. S.). March 30, 1925, [Convention date]. Reciprocating machines.-In an electric hammer of the reciprocating motor type the striker consists of a non-magnetizable rod 27, made for example of the chrome-nickel alloy known as rezistal, secured to a sleeve 28 of silicon steel or other magnetic substance. The rear buffer comprises a block 55 in contact with leaf springs 16 mounted under a guard plate 53 outside the casing to facilitate observation and repair. The alternately-acting solenoids 11, 12 carry laminated magnets 21, 22, 23 supported between a bronze tube 13 and a steel shell 17, the inwardly-turned ends of the laminae 21, 23 being longer than the ends of the laminae 22. The sliding bearings for the striker are lubricated by graphite. In the Specification as open to inspection under Sect. 91 (3) (a), Fig. 4 (Cancelled) illustrates a modified construction wherein the parts of the hammer are held together by bolts 71; in the Specification as accepted the body of the hammer in this modified construction is illustrated in elevation only. In a further modification, which also is not described in the Specification as accepted, the striker is in two parts with inner recessed ends which meet inside the sleeve 28 over a steel ball; by forcing the two rods together these ends are expanded and jammed inside the sleeve. Fig. 4 illustrates the circuit used, comprising alternating-current mains 85, 86 connected with the solenoids 11, 12, a transformer 83, two thermionic valves 81, 82 and a key switch 84 mounted on the hammer handle.
Patent GB-1366262-A (GB)
Title: Remotely controlled vehicle
IPC: A63B55/60
Filed: 1973-01-30
Abstract: 1366262 Radio direction-finding; inductive vehicular control PORTFOLIO MANAGEMENT Inc 30 Jan 1973 4523/73 Headings H4D and H4U A vehicle (Figs. 1 to 3, none shown) remotely controlled by a radio or inductive signals from a transmitter (Fig. 4, not shown) to home to the latter has a pair of wheels coupled to respective electric motors, a pair of aerials 22, 24 one on each side of the vehicle for producing sum and difference signals to afford a D.C. heading signal having an amplitude and polarity representing the direction of the transmitter, a circuit fed with the sum signal to produce a D.C. position signal having an amplitude corresponding to the distance of the vehicle from the transmitter, and a circuit responsive to both D.C. signals to control the speed of the motors. The embodiment is a golf-club transporter the front, third, wheel of which is mounted for free rotation about a vertical axis; dynamic braking is included; and the transmitter carrier frequency is in the range 100 to 400 kcp., and independent carrier oscillators are keyed sequentially to separate aerials, Fig. 7 (not shown). Different vehicles may utilize differing carrier frequencies.
Patent GB-540727-A (GB)
Title: Improvements relating to coupling components for use in colour photography
IPC: G03C7/34
Filed: 1940-03-12
Abstract: 540,727. Photographic colour development. KODAK, Ltd. (Eastman Kodak Co.). March 12, 1940, Nos. 4653/40 and 12653/41 [the second Provisional Specification being divided out of first Provisional Specifications]. [Class 98 (ii)] A colour coupler for colour development, which may be incorporated in a silver halide emulsion or in the developer is 2-n-valeryl-1-naphthol, 4- n-valeryl-1-naphthol, 2-cinnamoyl-1-naphthol, or 4-cinnamoyl-1 naphthol, or the sodium or other salt of one of these compounds. One or more of the hydrogen atoms of the valeryl.or cynnamoyl groups may be replaced by a halogen atom, a substituted or unsubstituted alkyl or aryl group, or a carboxyl, amido, alkyl-or aryl-amido, methoxy, nitro, or substituted or unsubstituted amido group. Specifications 440,032, 447,092, 458,664, 458,665, 474,353, 478,933, 478,934, 478,942, 478,983, 478,984, 478,985, 478,986, 478,989, 478,990, 478,991, 493,952, 496,195, 496,196, 496,245, 502,960, 503,752, 507,841, 509,707, 539,070, 539,395 and 539,937 are referred to.
Patent GB-175657-A (GB)
Title: Amplifier connections for wireless telegraphy
IPC: H03J3/14
Filed: 1922-02-17
Abstract: 175,657. Massolle, J., Engl, J., and Vogt, H. Feb. 18, 1921, [Convention date]. Thermionic amplifiers and detectors.-In order to avoid distortion effects arising from the use of transformers or the like in coupling a thermionic valve to a glow detector, the detecting-device g is placed across the high - tension supply E in parallel with the plate-filament path of the valve. Signal impulses applied to the grid of the amplifier k give rise to corresponding but reversed current-changes through the glow-tube g, and these may be recorded photographically. Coupling and regulating resistances W1, W2 and a condenser c are inserted, as shown; or the detector g may be connected directly across the plate-filament circuit of the amplifier k, the separate regulating-resistance w2 and condenser c then being omitted. Several amplifiers may be used.
Patent GB-1530381-A (GB)
Title: Fluid-pressure operated control device
IPC: F15B9/08
Filed: 1976-02-06
Abstract: 1530381 Fluid-pressure servomotors POCLAIN 6 Feb 1976 [28 Feb 1975] 04793/76 Heading G3P A hydraulic servomotor 5, used to operate the swash-plate 8 of a pump (not shown), has a feedback connection through a linkage 61 with a spool 20 forming a movable seat for a sleeve control valve 17 which may be connected to a manually operable lever 60 or be fitted with end plugs (48, 90), Fig. 5 (not shown) for operation by fluid-pressure under the control of a pilot valve (85). The pilot valve may be replaced by electrically operated valves. The servomotor is centred by springs 9 and is connected to the linkage 61 through a pin 63, Fig. 2, held between a pair of pivoted arms urged towards each other by a spring 79 so that it can be moved temporarily out of its correct position in relation to the control valve when abnormal operating conditions occur.
Patent GB-1217631-A (GB)
Title: Improved information storage and playback system
Inventor: RICH ANTHONY J
IPC: G09B5/12
Filed: 1969-01-29
Abstract: 1,217,631. Teaching machines. RICH Inc. 29 Jan., 1969, No. 4811/69. Heading G5G A selective retrieval information storage system which is particularly applicable to the teaching of such subjects as languages consists of a master station 9 in which information is stored, preferably on magnetic tape, and a plurality of student stations 10, 10<SP>1</SP>, 10<SP>11</SP> &c at each of which lessons can be selected from the master station and re-recorded at the student station for subsequent audible play back there. Preferably the receiving and play-back apparatus at each student station is a single-track tape recorder 11 and the storage unit at the master station employs one or more multi-channel (e.g. ten-channel) tapes. An essential feature of the invention is that there is a high speed (e.g. 30 inch/minute) re-record speed and a much lower (e.g. 1 inch/minute) play-back speed, and that on pressing keys 13 at any student station to select a lesson a re-record operation is initiated either forthwith or, if this is not possible because another student station is already recording, as soon as the master station is free to transmit the required lesson. The system therefore includes suitable memory and programming units 12, 12<SP>1</SP>, 12<SP>11</SP> &c. The circuitry of these, and of the central control apparatus at the master station, and of the local control apparatus at the student station are disclosed in some detail and circuit diagrams (Figs. 2 to 8, not shown) are provided. The sequence of operations for an individual student is as follows. He depresses one or more of his keys 13 and so transfers his requirement to his memory unit 12 which (after a short delay if the master unit is already transmitting) identifies a particular track on a particular tape at the master station and starts the master recorder on this track at high speed. The slave recorder 11 at the student station automatically starts at high speed at the same time and both master and slave run together while suitable electric transducers (not shown) pick up signals from the master tape and transmit them to the slave tape. When recording is complete as detected by a lamp-and-photo-cell detector 313, Fig. 6 (not shown) operated when a transparent window in the master tape at the end of the recording track passes it-both the master and the slave recorder are stopped automatically. The student can then operate his controls 17-20 as for an ordinary tape-recorded lesson. The student stations may be at different seats in one class-room, different class-rooms in one school or even different schools in a district. In the latter case the links between master and student stations would be hired telephone lines.
Patent GB-238789-A (GB)
Title: Improvements in handles for tools such as shovels, spades and the like
IPC: B25G3/02
Filed: 1925-02-21
Abstract: 238,789. Withington, W. Feb. 21, 1925. D-shaped handles.-A D-shaped handle for shovels &c. is formed from a blank, Fig. 1, provided with side arms 2, 3 which are partially separated from the arms 5, 6 by slots 14 'having arcuate inner edges to facilitate bending. The arms 2 and 3 are bent downwardly and curved inwardly to semicircular form to receive the shaft, while the arms 5, 6 are convexed inwardly and bent up to grip a handle 30 between their ends, so completing the D-shape. Corrugations and stamped-up prongs for the handle are formed in the heads 21 of the blank at the same time as rivet holes are punched in the arms 2 and 3 of the flat blank.
Patent GB-1243713-A (GB)
Title: Method for recovering synthetic rubber from an organic solution
Inventor: HATTORI KENICHI
IPC: C08C2/06
Filed: 1969-01-29
Abstract: 1,243,713. Recovering rubber from solution. KAO SOAP CO. Ltd. 29 Jan., 1969, No. 4923/69. Heading C3P. A solution of a synthetic rubber in an organic solvent is poured into heated water containing a mixture of a bi- or trivalent water-soluble inorganic metallic salt and a sulphonate of a C 15-24  monoalkyl benzene or a formaldehyde condensate of said sulphonate, said inorganic salt and said sulphonate forming a substantially water-insoluble compound, steam stripping the solvent and recovering the rubber as fine particles in an aqueous slurry.
Patent GB-628041-A (GB)
Title: Improvements in or relating to darts and flights therefor
IPC: F42B6/00
Filed: 1945-05-25
Abstract: 628,041. Darts. O'SHEI, W. E. May 25, 1945, No. 4932/47. Divided out of 13131/45. [Class 132 (iii)] A dart flight comprises a plurality of wings 3 moulded integrally of a synthetic resin, e.g. polythene, celluloid or polyvinyl chloride, and having their surfaces provided with ribs 6 which are preferably inclined rearwardly away from the axis of the dart. Each rib may be continuous or may comprise a series of shorter ribs. The ribs may be moulded with the vanes or may be subsequently produced by embossing. The edges of the vanes are preferably chamfered. Specification 580,847 is referred to.
Patent GB-570370-A (GB)
Title: Improvements in or relating to piezo-electric crystal units
IPC: H04R17/00
Filed: 1943-03-26
Abstract: 570,370. Piezo - electric crystal holders. BRUSH DEVELOPMENT CO. March 26, 1943, No. 4934. Convention date, March 26, 1942. [Class 40 (v)] A holder for a piezo-electric crystal 13 comprises a pair of U-shaped insulating members 1, 3, each having three half-notches 5, 7, 9 formed with protuberances 11 for gripping three of the corners of the crystal when the members 1 and 3 are joined by waterproof cement. Leads 19, 21 from the electrodes pass through grooves 15, 17 in members 1, 3. The casing is completed by a sheet of metal foil 25 which is cemented to one face of member 1, then folded round the ends of the members 1, 3 and finally cemented to the surface of member 3 to give a sealed waterproof container as shown in Fig. 6. Small blocks 23 of insulating material attached to the free corner of the crystal serve to transmit movement through the foil cover to a transmission link 29 which is clamped on to the outside of the cover, which is crimped as at 27, to increase its flexibility. Specifications 318,934, [Class 40 (v)], and 521,435 are referred to.
Patent GB-789489-A (GB)
Title: A press for providing semi-finished cartridge cases with an extraction rim
IPC: B21K21/04
Filed: 1956-02-17
Abstract: 789,489. Forging presses. LIBERGELD, M. Feb. 17, 1956 [Feb. 28,1955], No. 4976/56. Class 83(4). A press for providing a cartridge case 10 with a rim 9 comprises a mandrel 11 and jacket die 17 co-operating with a counter-die 4, 8 to provide an annular space into which the cartridge base is upset to form the rim. The counter-die comprises a ring die 8 provided with the undercut recess 8a and a bottom die 4 slidable within the bore of the ring die and adapted to be locked in the pressing position by a ram 5. The mandrel 11 is mounted on a movable press ram 12 on which is screwed a sleeve 14 which carries the jacket die 17. The latter is supported against a shoulder 14b of the sleeve through a spring 18. In operation, a cartridge blank is inserted over the mandrel which is moved forwardly with the jacket die to press against the base of the cartridge and upset the metal to form the rim. During initial retraction of the mandrel, the spring 18 maintains the jacket die 17 in contact with the ring die 8 to hold the cartridge 10 in the ring die and hence release it from the mandrel. The ram 5 then moves the bottom die 4 forwardly to eject the cartridge. A stripping ring 19 frictionally mounted on the mandrel has ears 19a projecting through longitudinal slots 14a in the sleeve 14. If the cartridge 10 adheres to the mandrel when the latter is retracted, the open end of the cartridge moves the ring 19 into engagement with a resilient buffer 20 which is moved to engage a stopmember 23, Fig. 4 (not shown), for stopping the press. The stop-member may be electrical, mechanical or hydraulic according to the type of press used.
Patent GB-1166554-A (GB)
Title: Improvements in and relating to Copy Milling Machines
Inventor: PECCHIOLI ARRIGO
IPC: B23Q1/72
Filed: 1967-02-02
Abstract: 1,166,554. Copy-milling machine. A. PECCHIOLI. 2 Feb., 1967 [4 Feb., 1966], No. 5020/67. Headings B3B and B3K. In a pantograph type copy-milling machine the template supporting table 7 is linked to the work-table 6 by a coupling 23, 18 permitting relative vertical movement therebetween. The member 23 is adjustable in two directions at right angles on the underside of table 6. The table 7 is slidably mounted on a cross slide 11 mounted on a support 9 which is itself vertically adjustably mounted on a member adjustable in the same direction as cross slide 11 on the machine base. Locking levers L provide for clamping the table 7 and cross slide 11.
Patent GB-1504503-A (GB)
Title: Process for coating metal surfaces
IPC: B05D3/10
Filed: 1977-02-08
Abstract: 1504503 Tannin containing coating composition PYRENE CHEMICAL SERVICES Ltd 8 Feb 1977 [9 Feb 1976] 05024/77 Heading C7U An aqueous composition comprising a vegetable tannin compound and a soluble Lithium compound. The solution may be used to treat aluminium surfaces to improve their corrosion resistance may have a pH of 3 to 9 and may additionally comprise titanium and fluoride compounds and phosphate ions.
Patent GB-416896-A (GB)
Title: Improvements relating to electrolytic condensers
IPC: H01G9/02
Filed: 1934-02-15
Abstract: 416,896. Electrolytic condensers. ELEKTRIZITATS - AKT. - GES., HYDRAWERK, 32, Drontheimerstrasse, Berlin. Feb. 15, 1934, No. 5092. Convention date, Feb. 21, 1933. Drawings to Specification. [Class 37.] The composite layer separating the strip electrodes of an electrolytic condenser comprises one or more strips of highly absorbent material such as filter paper or woven material, adapted to retain the electrolyte and one or more strips of spacing and insulating material such as thin ordinary paper.
Patent GB-959158-A (GB)
Title: Process of freezing a subterranean water-bearing formation
IPC: E21D1/12
Filed: 1963-02-07
Abstract: 959,158. Soil stabilization. PITTSBURGH PLATE GLASS CO. Feb. 7, 1963 [Feb. 28, 1962], No. 5105/63. Heading E1F. Subterranean water-bearing stratum is frozen by introducing a coolant liquid having a temperature below 0‹C down one or more boreholes extending down through the stratum to a cavity formed below the stratum and removing the coolant from the cavity through one or more holes extending to the surface of the working site, said second hole or holes being well spaced from the first hole or holes so that heat is not transferred from the rising coolant to the descending coolant. Specification 945,220 is referred to.
Patent GB-525211-A (GB)
Title: Improvements in or relating to lifting jacks
IPC: B66F1/02
Filed: 1939-02-16
Abstract: 525,211. Lifting-jacks. WALKER MANUFACTURING CO. Feb. 16, 1939, No. 5127. Convention date, Feb. 17, 1938. [Class 78 (iii)] In a friction-ratchet jack wherein a housing 8 carrying a lifting-crutch 13 is raised on a vertical column 7 by oscillations of a lever 18 acting through a friction ratchet element of the tilting plate type, a plurality of tilting plates 24 with independent gripping-action on the column is employed instead of a single plate. A plurality of tilting plates 35 is similarly employed as a load-sustaining device. The plates 24, which are maintained in assembled relation by a metal clip 28, are normally held at right angles to the column by a spring 30, and are tilted to grip the column by the pin 20 on the operating-lever 18 when the latter is raised so that the housing is raised with the lever. The plates 35 are normally held tilted in the gripping position by a spring 40 seated in a cup washer 41 bearing on the plates 24 ; the plates being held at one end 44 in a restricted opening 38 in the housing whilst at the other end they are free to move between a stop 45 and the edge 39 of the housing. As the housing is raised the opening 38 moves the plates to the non-gripping position. For lowering the lever arm 18 is removed from the socket and inserted in the space between the plates 35 and the edge 39 of the housing, thus forcibly depressing the adjacent ends of the plates into the non-gripping position. The housing is made from sheet metal pressings connected together by folded flanges and by the crutch member 13, and the individual plates 24 and 35 may be metal stampings.
Patent GB-138724-A (GB)
Title: Improvements in the design and manufacture of sheet metal boats or other light vessels
IPC: B63B3/00
Filed: 1919-03-03
Abstract: 138,724. Gardner, W. March 3, 1919. Metal boats.-The material of sheet-metal boats is crimped or joggled longitudinally in steps, each step increasing in depth towards the bow and stern as required to form the shape of the vessel, as shown in Figs. 2 and 3. The effect produced is that of a clinker-built boat, the steps corresponding in extent to the amount usually necessary to stretch the metal amidships.
Patent GB-588647-A (GB)
Title: A thermally operable mechanical system
IPC: G05D23/02
Filed: 1945-03-02
Abstract: 588,647. Temperature - responsive actuating - elements. BRITISH OXYGEN CO., Ltd., and GODFREY, R. C. May 2, 1945, No. 5236. [Class 64 (ii)] [Also in Groups XI and XXV] A thermostatic control unit comprises a mass of metal which expands on heating, preferably an annulus 11 of copper, copper alloy or stainless steel, which is subject to a heating medium and has longitudinal members 10 spaced about the axis of the mass at one end ; and on the members 10 is placed constraining means such as a non-expansible metal ring 14, e.g., of ferronickel alloy, so that on rise of temperature the annulus 11 expands outwardly and the free ends of the members 10 are constrained by the ring 14 to move inwards, these free ends being connected with means to control the flow of heating medium. The members 10 may be tapering jaws formed by slitting one end of the annulus 11. The ring 14 may be connected to the annulus 11 by arms having a low co-efficient of expansion, and the jaws 10 may be tapered to or from their outer ends, the movement of which is thus amplified or reduced. These free ends may be connected to a temperature recording device. The annulus may grip a rod 13.
Patent GB-370123-A (GB)
Title: Improvements in or relating to the tube joints of water-tube steam boilers
IPC: F22B37/10
Filed: 1931-02-19
Abstract: 370,123. Jointing tubes to plates. STIRLING BOILER CO., Ltd., 32, Farring- don Street, London.-(Babcock & Wilcox Co. ; 85, Liberty Street, New York, U.S.A.) Feb. 19, 1931, No. 5274. [Class 99 (i).] The ends of the water-tubes 12 of high pressure steam generators are reduced in diameter and secured in the outer ends of radial holes 14 in the drum.
Patent GB-112873-A (GB)
Title: Improvements in or relating to Scales, Rules and like Measures of Length.
Inventor: NEWELL ALFRED LEONARD
IPC: G01B3/04
Filed: 1917-04-14
Abstract: 112,873. Newell, A. L. April 14, 1917. Scales.-A scale or rule is formed of a graduated metal strip a bent around a cardboard, wood, or like reinforcement b so that its edges a<1> do not meet at the back. It may be bent, as shown in Fig. 1, or shaped, as shown in Fig. 3, so as to present a concavity at the back, to which an advertisement may be secured by an adhesive or by the edges of the strip, so as to be protected from wear through contact with surfaces on which the rule is used. Solid metal end pieces may be fitted and ground to give accurate length. The graduations are preferably extended over the edges so as to appear on the back.