baber/WOPTO huggingface dataset:
Patent GB-259310-A (GB)
Title: Improvements in engine starters
IPC: F02N99/00
Filed: 1925-07-09
Abstract: 259,310. Rogers, F. H., (Eclipse Machine Co.). July 9, 1925. Turning-gear.-A starter for aeroplane or other engines comprises a power driving member 11 movable axially into engagement with an engine member 12, actuating means 9, 10 for the member 11, a rotatable driving member 3, a friction clutch 5 between the members 3, 10, and locking-means for preventing backward rotation of the member 3. Detachable manual and electric actuating means or the member 3 are also provided. As shown in Fig. 1, the member 10 is threaded internally to engage threads 9 on the driving member 11, which is splined to engage internal splines in the engine shaft 12. The clutch 5 comprises two sets of plates under the pressure of springs 6 engaged by an adjustable nut 7 on the member 10, alternate plates being splined to the members 3, 10 respectively. A detachable electric motor 18 mounted on the casing 1 drives the member 3 by means of a bevel pinion 19 and a bevel wheel 20 carrying freely rotatable planet pinions 21 with two sets of teeth 23, 22 in engagement respectively with a fixed gear 30 and with a gear 15 on the member 3. The shaft 17 of the wheel 20 projects outside the casing 1 and carries a bevel pinion 42 for engagement by a bevel pinion 41 on the manually driven starting shaft 35. This is rotatable in a casing 33 which can be bolted to the casing 1 in three different positions, and the casing 1 may be bolted to the centre case 69 in three different positions, so that the end of the shaft 35 carrying the pin 40 for engagement by a starting-handle may be in any desired position. For locking the shaft 35 against backward rotation, a sleeve 43 carries a sliding member 44 having ratchet teeth held by a spring 49 in engagement with teeth on the casing. If it is desired to reverse the direction of rotation of the shaft 35 relatively to the shaft 16, the bevel wheel 41 is shifted from the key-way 60 to the key-way 61, and the sleeve 43 and associated parts are interchanged with a spacing collar 65 at the other end of the shaft. The shaft 35 may be extended by means of a cranking tube pinned to the shaft and formed at each end with a clutch slot for engagement by a cranking-handle, the slots being oppositely inclined so that, by reversing the tube end for end, the shaft 35 may be turned in either direction.
Patent GB-219693-A (GB)
Title: Improvements in writing and drawing devices
IPC: B43L1/12
Filed: 1924-07-23
Abstract: 219,693. Deutsch, H. July 23, 1923, [Convention date]. Writing tablets. - A writing or drawing tablet comprises a transparent or translucent writing sheet f of resistive elastic material such as celluloid, cellulose acetate, hardened gelatine &c. with a rear adhesive layer of paraffin wax, bees wax &c., and a record sheet e differently coloured from the writing sheet f and placed beneath it, this record sheet being thin and flexible so that when the point of a pointed instrument that imparts no colour to the writing sheet is passed over the latter, the parts of the record sheet against which the elastic writing sheet is pressed by the instrument adhere to the writing sheet and so become visible and are raised by the sheet when the pressure of the instrument ceases. The writing is obliterated by a transverse strip i of metal &c. fixed in the sheet metal border b of the case a and lying between the celluloid sheet f and the coloured sheet e so that when the writing plate is drawn out of the case a the strip i separates the adhering parts of the paper sheet e from the wax &c. on the celluloid &c. sheet f. In a modification, the writing plate a has a sheet metal ground plate d<1>, Fig. 10, on which is placed a block of perforated sheets l, above which is a sheet of dark and coloured copying or carbon paper e' which adheres to the plastic back of the celluloid &c. sheet. When written upon, there is produced, in addition to the immediately obliterable record, a permanent carbon copy on the top sheet of the tablet l which can be torn off. The transverse obliterating strip i<1> can be withdrawn from between the sheets so that the writing plate can be pulled completely out of the case a, when a new tablet or carbon sheet can be refitted.
Patent GB-1420816-A (GB)
Title: Filament reinforced rotor assembly
IPC: F04D29/26
Filed: 1973-04-12
Abstract: 1420816 Turbine or compressor rotors UNITED AIRCRAFT CORP 12 April 1973 [1 May 1972] 17693/73 Heading FIT A filament reinforced rotor assembly, e.g. for a turbine or compressor, comprises a rotor body 12 having an annular cavity 24 containing a ring 26 of circumferentially wound filaments embedded in a matrix material, the inside diameter of the ring being slightly larger than the radially outwardly facing base 32 of the cavity so that the different centrifugal and thermal growth of the rotor and ring bring the ring into centrifugal load bearing contact with the base during operation. Three bowed leaf-springs 38 maintain the ring concentric with the base 32, and during operation completely fill recesses 34 in the base. The filament-matrix combination may be carbon-carbon, saphire-nickel, boron-titanium or graphite-graphite. The cavity may be filled with inert gas. The composite ring may be encapsulated within a tube, or the walls of the cavity may be coated or lined with suitable insulating material.
Patent GB-1069514-A (GB)
Title: Method of manufacturing silicon compounds
IPC: C07F7/08
Filed: 1964-04-29
Abstract: Compounds containing bonds <FORM:1069514/C3/1> wherein M is C, Si, Ge, Sn or Pb, are prepared by the reaction of compounds containing at least one <FORM:1069514/C3/2> bond with compounds containing at least one <FORM:1069514/C3/3> bond.  In Examples: (1)....... (n-C4H9)3SnOSn(rC4H9)3 reacts with -[-(CH3)SiHO-[-n to give <FORM:1069514/C3/4> (2) the polysiloxane product of (1) reacts with further polymethylhydrogensiloxane to give <FORM:1069514/C3/5> where n is 50-100, (3) (n-C4H9)3SnOSn(n-C4H9)3 reacts with (CH3)3SiH in 1:2 molar ratio to give (CH3)3SiOSi(CH3)3, (4) (n-C4H9)3SnOCH3 reacts with (CH3)3SiH in 1:1 molar ratio to give (CH3)3SiOCH3, and (5) (n-C4H9)3SnOSn (n-C4H9)3 reacts with -[-(CH3)SiHO-]-n in the ratio of 3 distannoxane molecules per 200 <FORM:1069514/C3/6> methylhydrogensiloxane rubber.  The second product in all cases is (n-C4H9)3SnH.  The products may be used as stabilizers for polyvinyl chloride resins.
Patent GB-1123665-A (GB)
Title: Improvements in or relating to metal castings and moulds thereof
IPC: B22C9/10
Filed: 1966-04-22
Abstract: An aluminium alloy consists of:-  .Cu.3 - 4% .Si.7.5 - 9% .Fe.0.7% .Mn.0.5 .Mg.0.07% .Zn.0.5% .Ni.0.3% .others.0.3% .with the balance Al..
Patent GB-584695-A (GB)
Title: Electric arc welding apparatus
IPC: B23K9/20
Filed: 1944-09-18
Abstract: 584,695. Welding. ENGLISH ELECTRIC CO., Ltd., and SALTHOUSE, J. E. Sept. 18, 1944, No. 17789. [Class 83 (iv)] [Also in Group XXXV] The sliding stud holder of a portable machine for welding studs to plates, is held in any desired position in its range of motion by establishing an electromagnetic holding force by energizing a coil which sets up a magnetic flux through the stud holder and the member on which it slides when the two members are in the' desired relative position. A plunger 3, tapped at 3a to take a chuck for gripping the stud, slides in the body 1. When the machine is held against a plate with a fusible insert between the latter and the stud the plunger moves inwardly against spring 4 until the ends of legs 6 bear against the plate. The coil is then energized holding the plunger in position due to the attraction between teeth on the body 1 and on polepieces 3b, 3c and welding current is passed through the stud to the plate, the fusible part rupturing and forming an arc. After a predetermined time, the coil 5 is deenergized and the spring 4 presses the stud into contact with the plate. The relative movement of the two members may be angular, or the surfaces in contact may be plane, or the coil may be on the fixed member and may be de-energized in stages. Specification 579,711 is referred to.
Patent GB-701941-A (GB)
Title: Improvements relating to electrical measuring instruments
Inventor: CROWLEY-MILLING MICHAEL CROWLE
IPC: H02H11/00
Filed: 1951-07-27
Abstract: 701,941. Ammeters and voltmeters. METROPOLITAN-VICKERS ELECTRICAL CO., Ltd. July 14, 1952 [Ju]y 27, 1951], No. 17878/51. Class 37  In an instrument operable over more than one range means independent of the indicating element are provided for automatically changing from a lower to a higher range when the quantity being measured exceeds a predetermined maximum value for the lower range, together with means for indicating the range for which the instrument is set. An ammeter AM and the operating coils A, B of two relays are connected in series between terminals x. These relays are set so that while the current remains below a predetermined maximum value for the low range they remain unoperated and the ammeter is not shunted. When this current is exceeded relay A operates and closes its contact a1 to connect a shunt S1 across the ammeter AM. When the current exceeds the predetermined value for the medium range relay B operates and closes its contacts b1 to connect a shunt S2 in parallel with the shunt S1 and also closes a contact b3 to connect a shunt R across the relay A to prevent overloading while maintaining it energized. The relays A, B also control the circuits of lamps indicating the range in use. As applied to a voltmeter, relays insert series resistances for the different ranges. In a modification the relays are connected in the anode circuits of thermionic valves, the grid voltage being arranged to be proportional to the quantity being measured.
Patent GB-456129-A (GB)
Title: Improvements in roller bits for boring earth and rock
IPC: E21B10/10
Filed: 1936-06-27
Abstract: 456,129. Earth - boring drills. REED ROLLER BIT CO., Mack Street, Houston, Texas, U.S.A.-(Assignees of Harrington, G. G. ; 2706, Rosewood Avenue, Houston, Texas, U.S.A.) June 27, 1936, No. 17901. Convention date, July 10, 1935. [Class 85] In a rolling - cutter earth - boring drill with cross-cutters 18 and side cutters 40, the cross cutters may have spiral cutting teeth and are supported or a pin 15 with grooves 16 for roller bearings 17, the pin 15 passing through a bridge-piece 20 with spindles 30 or which the side cutters run on rollers 41 and balls 42 ; the balls 42 lock the side cutter: against axial move ment and are inserted through openings 45 in the bridge-piece the openings then be ing plugged. Wear plates 43 are providec outside the side cutters. The cutters and bearings are assembled on the pin 15 and bridge piece and are inserted as a unit, end parts of the bridge piece entering slots 14 in the drill head and being secured as by welding and supports 22 for the pin 15 being suitably fixed to the drill head.
Patent GB-185888-A (GB)
Title: Improvements in or relating to mechanically operated interrupters for electric currents
IPC: H01H3/00
Filed: 1921-07-01
Abstract: 185,888. Pollak, J. E., (Maschinenbau Akt-Ges. Seebach). July 1, 1921. Interrupters, mechanical; timing-devices.- Mechanically-operated interrupters comprise contact pieces h, i, k attached by flat springs l, m, n to adjustable collars o, p, q on rods r, s operated by eccentrics t, u on a driving-shaft w. Spring blades e, f, g connect the contacts h, i, k to fixed contact blocks b, c, d secured to an insulating plate a. As shown, current is led to the centre contact i and conducted alternately to the two outer contacts h, k, the former being separated by the eccentric u and the latter by the eccentric t. By adjusting the collars o, p, q the duration of contact may be varied. Alternatively, the springs l, m, n or e, f, g may be replaced by pivoted rigid connecting - links, intermediate resilient parts being provided in the rods r, e. In a further alternative, one of the outer contacts h, k may be omitted.
Patent GB-691657-A (GB)
Title: Improvements in or relating to pressure lock keys
IPC: F16D1/08
Filed: 1951-07-31
Abstract: 691,657. Securing articles on shafts. GILLEN, J. W. July 31, 1951 [Aug. 16, 1950], No. 18138/51. Class 80 (ii). Grooves 16 tapering or uniform in width and starting from points short of one end are pressed in those faces of a rectangular sectioned key 15 which engage the bottoms of the keyways, the grooves closing in under pressure as the keys are forced into position. The key will adjust itself, automatically, to tolerances in the machinery of the co-operating key slots.
Patent GB-314213-A (GB)
Title: Improved process for the destructive hydrogenation of solid carbonaceous material
IPC: C10G1/06
Filed: 1928-06-22
Abstract: 314,213. Rule, A., and Imperial Chemical Industries, Ltd. June 22, 1928. Hydrogenation, destructive.-Solid carbonaceous matter, such as coal or lignite which on treatment at raised temperatures with hydrogen under 200 atm. pressure yields a viscous product, is treated with or without addition of an oil or tar vehicle with hydrogen under a pressure of at least 500 atm. and a temperature approximating to 420‹ C. so as to yield a mobile product amenable to filtration. The reaction time does not normally exceed one hour and the ratio of total oil to matter insoluble in benzol in the final product is not less than 10: 1. Lignite mixed with 40 per cent of coal tar is heated at 420‹ C. for one hour with hydrogen under a pressure of 250 atm. rising to 550 atm. The product contains 64 per cent oil and 1 per cent organic matter insoluble in benzol. The corresponding figures for 420‹ C. and 200 atm. are 48 and 11 per cent, and for 460‹ C. and 200 atm. 36 and 18 per cent respectively. Specifications 309,095 and 309,239 are referred to.
Patent GB-1058269-A (GB)
Title: Scanning system for recording pictorial data
IPC: G03B15/00
Filed: 1964-05-01
Abstract: 1,058,269. Local recording by scanning. THER PERKIN-ELMER CORPORATION. May 1, 1964 [May 1, 1963], No. 18207/64. Heading H4F. In an apparatus for mounting in an aircraft for photographing a long strip of terrain at night, light emerging from one end of an optical maser 10 is formed into a beam and scanned over the ground 26 in a direction transverse to the flight path by a rotating mirror drum 20, the reflected light being detected by a photo-multiplier 38 to produce a signal which controls a modulator 60 through which light emerging from the other end of the maser passes to the scanning drum and thence to a continuously moving photographic film 80. Drive motors 24 and 82 for the mirror drum and film are controlled by a circuit 100 at a speed which is determined approximately from the ratio of aircraft height to velocity. The use of a common mirror for the scanning and recording light beams ensures accurate recording of the relative positions of image details in the transverse direction, whilst too rapid or too slow rotation of the motor 82 merely causes a longitudinal stretching or shrinking of the records image which can be allowed for in interpretation. To compensate for the variation of recording speed with aircraft speed and height a tachometer 62 controlled from the drive to mirror drum 20, or from an eddy-current slip clutch 96 for the film take-up spool 92, is employed to adjust angularly a variable density filter disc 68 located in the recording light path. Compensation for the reduction in reflected light as the transverse scan angle increases is effected by a stationary and variable density filter 78. Variation of reflected light with aircraft height is compensated by an automatic gain control system 40, 42, 46 for the photomultiplier 38. The modulator 60 comprises an electro-optical element, e.g. a potassium dihydrogen phosphate crystal, which functions to rotate the plane of polarization, the element is followed in the light path by a polarizing filter. No filter is required before the element since the light provided by the maser is polarized. A filter 36 is included before photomultiplier 38 to pass only radiation of a wavelength corresponding to that of the maser (for example, 6328 Angstroms). A more complete illustration of the mechanical and optical arrangement of the apparatus is given with reference to Figs. 2 and 3 (not shown). According to a modification a second independent light source may be used for recording on the film. Futhermore, the signals from the photomultiplier may be recorded on magnetic tape for translation into a photographic record subsequently.
Patent GB-808876-A (GB)
Title: Devices for adding to the contents of bottles, phials and the like, substances contained separately therefrom
IPC: B65D51/28
Filed: 1957-06-07
Abstract: 808,876. Bottles &c. DOMPE, F. June 7, 1957, No. 18250/57. Class 66. A container-stopper device comprises a container, which fits on the mouth of a bottle 11, and a capsule 5 with side ports 9, the capsule being designed to occupy one of two positions either to close the container or to permit free passage between the container and bottle. The coupling 3 of the container casing 1 is flanged internally at 4 and has internal threads for screwing on to the bottle neck. The capsule 5, has two annular beads 6 and 7 and a flange 8, the beads normally lying either side of the flange 4 of the easing 1. Axial beads 10 separate the ports 9. To release container contents, the container is screwed down, thereby causing the rim of the bottle to push up the capsule 5 so that the bead 7 rides past flange 4 and ports 9 are opened, as shown.
Patent GB-1380959-A (GB)
Title: Apparatus for the automatic folding and creasing of sheet material
Inventor: HEIST H
IPC: B65H45/20
Filed: 1972-04-20
Abstract: 1380959 Folding paper KALLE AG 20 April 1972 [22 April 1971] 18306/72 Heading B8R A sheet 2, Figs. 1 and 2, to be folded is fed by driven feed rollers 5, 6 to a drum 7 initially rotated counter-clockwise by an independent drive means, so that the leading end of the sheet is carried to the left to a photo-electric sensing device 15 which initiates a timing sequence as a result of which the drum drive is disconnected and the rollers 5, 6 are bodily pivoted to bring the roller 6 into contact with the drum, which it drives clockwise to draw the sheet to the right and form a fold between the drum and the roller 6, the folded part being carried to the right until the rollers 5, 6 are pivoted to bring the roller 5 into contact with the drum and drive it counter-clockwise to form a second fold. When the final fold has been made, the zigzag-folded sheet 2<SP>1</SP> is delivered along a guide 12 or guides 14, 12 to a receptacle 13. By selecting a timing circuit by an appropriate switch, the apparatus can be used to produce folds at irregular intervals according to various standard systems, in which case the last timing sequence, to form the last fold, is predetermined, or to produce folds at regular intervals, in which case the last sequence is determined by a photo-electric sensing device 17 detecting the trailing end of the sheet. Two sensing devices 15, 16 are provided, which are selectively operable according to the required position of the first fold.
Patent GB-348924-A (GB)
Title: Improvements in supporting planes for air crafts
IPC: B64C21/02
Filed: 1930-06-16
Abstract: 348,924. Aircraft planes. ZIEGLER, J. F., 2, Schwarzenbergplatz, Vienna. June 16, 1930, No. 18347. Convention date, Dec. 31, 1929. Addition to 347,051. [Class 4.] Aircraft planes with inclined channels through them as described in the parent Specification have the upper rear edges and the forward lower edges of the openings projecting beyond the upper and lower surfaces respectively to act as scoops and nozzles as shown in Fig. 3, to promote the airflow. The inside of the plane may be made hollow and may be divided into three compartments by partitions f, g, Fig. 2, having staggered holes. A slit e is provided at the rear of the plane.
Patent GB-719739-A (GB)
Title: Improvements in cable winding devices
IPC: B66D1/20
Filed: 1952-07-21
Abstract: 719,739. Winch drives. DUSA AKT.-GES., and DURST, F. July 21, 1952, [July 21, 1951.] No. 18431/52. Class 78 (5). The drive from the engine to the winch drum 8 passes to either of gears 60, 61 (Fig. 4) which are rigidly connected together, the gears being released from .brake surface 72 by movement of sleeve 70. As shown, the drive from engine, 30 (Fig. 1) passes via sprocket 34 to shaft 35 and thence, upon rotation of shaft 47, by operation of handle 54 (Fig. i) to move clutch member 44, to either of sprockets 56, 57 and thence to the corresponding gear 60, 61 thus driving the gear combination 60, 61 in either load lowering or raising direction. The drive then passes to shaft 65 through spring rod go (which at the same time permits relative rotation) and the drive passes thence to drum 8 through gears 76, 77 and internal gear 78; relative movement between gear combination 60, 61 and sleeve 70 causing the. locking clutch 73 to be released from block 36. by engagement of shoulders 66a, 67a. When the load rises it engages at a predetermined height the end stop 26 (Fig. 1) which latter pivots about 28 and causes pin 29 to rise and to contact lug 48a whereby shaft 47 is rotated to release clutch member 44. Thus, the drum stops and spring rod 90 is free to re-assert itself and thus it rotates the gear combination 60-61 so as to operate brake clutch 73 and so sustain the load. Clutch member 44 is operated by twisting knob 54, the handle 53 of which is made long for distant control and comprises spring 53a. Drum 8 is supported between frame plates 1, 4 joined by rods 3 carried on overhead rail by wheels 11 connected resiliently by springs 94. Guide 22 (Figs. 1, 7) carrying guidepins is caused to reciprocate along threaded spindle 19. To stop said guide at its ends, electric wires 112 in the motor circuit are embedded in insulation 110 and short circuited by the guide as the latter reaches its limit so as to stop the latter. Between load rope 24 (Fig. 8) and load hook 100 are interposed shock absorbing springs 105.
Patent GB-619968-A (GB)
Title: Improvements relating to high frequency transmitting apparatus
IPC: H03C1/06
Filed: 1946-06-19
Abstract: 619,968. Valve modulating circuits. BRITISH THOMSON-HOUSTON CO., Ltd. June 19, 1946, No. 18484. Convention date, June 19, 1945. [Class 40 (v)] 'In a modulating system in which modulation is effected at an intermediate high-frequency stage, and the modulated wave is fed to a power or output stage, the load on the intermediate stage is maintained steady even at peak modulation by a load compensating valve which is brought into action at the modulation peaks. As shown in Fig. 2, the intermediate stage comprises a pentode amplifier 3 following a series of low-power stages 1, and is modulated on its suppressor grid g3 by signals from a source 2. The valve 3 feeds an output stage 6, the grid of which is connected to a grid-current compensating valve 6a. The tuned grid circuit of the stage 6 is shunted by a load-compensating pentode valve 4 which has its control grid connected to the anode of a triode valve 5. This valve is back-biassed so as to pass current only on the positive peaks of the modulation voltage present on its grid. When the valve 5 passes current, the control grid voltage of the valve 4 falls and the load current taken by the compensating valve 4 is reduced, thus producing a linear modulated output from the valve 6. As the voltage on the control grid of the valve 4 falls, the screen voltage rises and results in a rise in the screen voltage of the modulator valve 3, and an increase in the R.F. output at the modulation peak. In a modification (Fig. 5, not shown), the compensating valve 4 is replaced by two triode valves, each having its grid connected to the anode of the valve 5, the anode of one triode being connected to the screen grid of the valve 3 and the other triode being connected across the tuned input circuit of the output stage 6. Overall negative feedback may be provided by connecting the detected output from the stage 6 to the signal input circuit 2.