baber/WOPTO huggingface dataset:
Patent GB-847317-A (GB)
Title: Improvements in or relating to apparatus for optically projecting transparencies in a magazine
IPC: G03B23/04
Filed: 1958-07-03
Abstract: 847,317. Optical-projection apparatus. MONTREMY, J. DE. July 3, 1958 [July 4, 1957], No. 21370/58. Class 97(1) In apparatus for projecting slides from a magazine the slide changing member is operated by a nut on a frictionally driven leadscrew the direction of rotation of which is reversed by members engaged by the leadscrew at the end of its travel. One form is shown, partly in vertical section, in Fig. 2 and in horizontal section in Fig. 3. The slide changing member 37 is driven by a' nut 12 carried on a leadscrew 11. A motor 1 drives a shaft 9 through a rubber tyred wheel 2 and a friction disc 4. The shaft carries friction discs 6, 8 spring urged so that the former is normally engaged with the wheel 10 on the leadscrew to drive it from left to right. Towards the end of this movement the nut 12 stresses a spring 14 carried on a lever 20 pivoted at 21. The lever 20 is prevented from moving by a latch 19 on a lever 17 pivoted at 18 but is freed when the nut 12 engages and depresses a pin 16 projecting from the lever 17. The lever 20 then pivots to move the discs 6 and 8 along the shaft 9 to engage the disc 8 with the wheel 10 to start reverse rotation of the leadscrew. A member 26 sliding on a shaft 13 has projecting lugs 27, 28 engaged by the nut 12 at the ends of its travel and, as it is moved to the right, engages the lever 20 to prevent its return movement until the nut 12 reaches the left hand limit. At this point the nut opens a switch 25 to break the motor circuit. It may be closed again by operating a push-button 54 (Fig. 13). Normally the motor runs until the switch 25 is opened again. This removes a slide from the projection position and replaces it with another from the magazine 48. A switch 34, also in the motor circuit, is opened by the nut 12 at the right hand limit of travel but the motor circuit may be maintained by a manually operable parallel switch 35. A slide may be removed from the magazine, without replacement, by starting the mechanism with the button 54, after opening the switch 35. Instead of using the manual button 54, projection cycles may be initiated by a clockwork time switch 31 brought into circuit by a manually operable switch 31. This is opened by the nut 12 at its right hand travel limit but closes again after a time delay which is adjustable, to shortcircuit the switch 25, after the nut has been at its left hand limit, with the slide in projection position, for the desired time. This sequence repeats continuously. Fig. 8 shows the mechanism for stepping the slide magazine forward after each slide is projected. As the slide changing member 37 starts to remove a slide from the projection position a spring 51 carried by the member 37 passes between teeth 49 projecting from the bottom of the magazine and engages an abutment 53 which stresses the spring, which, as soon as the member 37 is disengaged from the magazine, moves the magazine forward.
Patent GB-1489040-A (GB)
Title: Manipulator system
IPC: G01L5/16
Filed: 1976-05-24
Abstract: 1489040 Force transducers INTERNATIONAL BUSINESS MACHINES CORP 24 May 1976 [30 June 1975] 21378/76 Heading G1N The two fingers 12 (Fig. 1) of a mechanical manipulator, controlled individually by motors 16, 18, 20 for rotation about three mutually perpendicular axes, are each connected to a driving block 14 via a transducer assembly 10 for measuring the bending moments about each axis and the applied force along each axis, comprising a plurality of identical I-beam structures 10C, &c. with a pair of strain gauges 31-34 (Fig. 2A) on each side of the centre portion 30 of the beam. The strain gauges are connected in bridge networks and the output signals from the six bridges are analyzed by a computer to determine the three bending moments and the three axial forces on each finger 12. The I-beams are inter-connected by blocks 40, &c. The fingers 12 are opened and closed by moving the blocks 14 along tracks 15 by means not shown.
Patent GB-378187-A (GB)
Title: Improvements in or relating to terminal plates or strips and to terminals therefor
IPC: H01R9/18
Filed: 1931-07-27
Abstract: 378,187. Binding-posts. BELLING & LEE, Ltd. and LEE, E. M., Queensway Works, Ponders End, Middlesex. July 27, 1931, No. 21399. [Class 38 (i).] In a terminal mounted on both sides of an insulating material for the connection of a wire at each side of the material, the part of the terminal in contact with the inner surface of the material is so formed as to engage non- rotatably therewith when tightened in position, and is provided with a clamping screw disposed transversely of its axis and adapted to secure a wire inserted into a hole or recess in the inner part of the terminal. As shown, the insulating material is formed with a boss 15 having a hexagonal internal recess into which is fitted a hexagonal nut 16. A bore 17 to receive a wire is formed at the free end of the nut 16, and a transverse screw 18 is provided to secure the wire. The other end of the nut 16 is formed with a larger bore 19 threaded to receive a terminal stem 20 carrying a collar 21 and a non- detachable thumb-nut 23. A notch 22 in the collar 21 is engaged by a suitable tool when screwing the stem 20 into the bore 19. In a modification, a nut 27 of circular or angular cross section, having bores 28, 29 and a screw 30 similar to the corresponding parts of the nut 16, is formed with roughenings or serrations 31 at the face in contact with the inner surface of the insulating material. In a further modification, a threaded stem 32 is formed integral with a head 33 having a bore 36 and a screw 37. The head 33 is serrated and/or is made of angular cross section to engage a correspondingly shaped recess in the insulating material. The terminal is secured by a collar 34 threaded over the stem 32 and having a notch 35 for engaging a suitable tool. In each form, the bore in the inner part of the terminal may be inclined to the axis of the terminal or may take the form of a recess into which a wire is inserted laterally.
Patent GB-628927-A (GB)
Title: Improvements in heat cast refractories
IPC: C04B35/01
Filed: 1947-08-06
Abstract: A heat-cast refractory for use in resisting attack by chemical fluxes such as molten glass, and comprising zirconia, chromic oxide, alumina, and iron oxide, has the amount of silica restricted to less than 4 per cent, and the mols of iron oxide less than the sum of the mols of chromic oxide and alumina.  The iron oxide forms spinels with the chromic oxide and alumina, and the mass is constituted by crystals of zirconia and solid solutions of ferrous chromite, ferrous aluminate, and chromic oxide-alumina.  In order to avoid the inclusion of detrimental impurities, chrome green oxide is used as the source of the chromic oxide.  Specifications 265,847, [Class 22], 542,550 and 545,949 are referred to.
Patent GB-1218341-A (GB)
Title: Pulse radar system
IPC: G01S13/52
Filed: 1965-05-20
Abstract: 1,218,341. Pulse radar. COMPAGNIE FRANCAISE THOMSON HOUSTON - HOTCHKISS BRANDT. 20 May, 1965 [2 June, 1964], No. 21502/65. Heading H4D. In a twin pulse MTI radar, elimination of chaff echoes is effected. These signals having a correlation function above a given threshold are selected. The correlation function of the output signals at the reciver phase discriminator is derived over two successive periods and the radar frequency is varied randomly and successively from one repetition to the next. Thus the phase shifts of the chaff echoes from different portions of the chaff cloud, are not correlated at the phase discriminator output. The target signals are correlated as the targets are pinpoints. An approximate calculation of the correlation function is effected by multiplying the signals at two successive repetition periods and integrating the result over N periods, where N is the number of useful illuminations in a given direction. Digital integration may be used in conjunction with a binary quantized phase discriminator output. The video signal, which is a function of the phase angle difference of received twin pulse echoes, i.e. a function of the radial velocity of detected objects, is delayed by one repetition period prior to multiplication and integration. The transmitted twin pulses 1, 1<SP>1</SP> and 2, 2<SP>1</SP> have the same width and carrier frequency. At the receiver, signals from the amplitude and phase channels are applied through the limiters 25 and 27 to the AND circuit 28, the output target pulses of which are integrated in 29. The limiters 25, 27 have outputs only if the applied signal exceeds a threshold. The output of circuit 24 is a video signal of the lowest amplitude of those at its input. Delayed and direct signals from the phase channel are applied to multiplier 41, the output of which is integrated at 43. If the output from 43, the correlation function, is lower than a threshold in 44, the circuit 45 is blocked and possible target signals cease.
Patent GB-348957-A (GB)
IPC: A47L5/10
Filed: 1930-07-16
Abstract: 348,957. Free-wheel clutches. ELECTROLUX, Ltd., 153, Regent Street, London. -(Assignees of Inventia Patent-Verwertungs Ges. ; 10, Herrenacker, Schaffhausen, Switzerland.) July 16, 1930, No. 21516. Convention date, July 16. 1929. [Class 80 (ii).] In a hand-propelled vacuum cleaner a friction pawl device, comprising cranked arms 36 pivoted at 38 to a sleeve 39 freely mounted on the shaft 22, the inner ends engaging slots in a member 37 secured to the shaft 22 and the outer ends contacting with the inner face of the recess 40 in the fan, is arranged d to ensure a drive in one direction only of the fan when the cleaner is pushed to and fro.
Patent GB-154353-A (GB)
Title: Improvements relating to spare-wheel and spare-rim carriers and to means for supporting the fuel containers of motor vehicles
IPC: B62D43/02
Filed: 1919-09-02
Abstract: 154,353. Jackson, W. J. Mellersh-, (Paige-Detroit Motor Car Co.). Sept. 2, 1919. Mounting and securing reserve tyres and wheels on vehicles.-A second cross-bar E is fitted between the side bars A and behind the ordinary rear cross-bar B of a motor-vehicle and serves (1) to support a spare-wheel or spare-rim carrier G, (ii) to carry an angle-bracket F<1> which, with two similar angle-brackets F carried by the cross-bar B, gives a three-point support to the petrol tank D, Fig. 6, and (iii) forms a reinforcement for the vehicle frame. The demountable-rim carrier G is bolted by means of lugs to the cross-bars B and E, and carries a face-plate I secured to its free end by bolts J. On the face plate are secured three radial arms L, Fig. 3, to which the rim is fastened in any suitable way. The face plate I may be replaced by a support M. Fig. 5, adapted to receive the hub of a sparewheel, which is secured thereon by means of a nut engaging the threaded end M<1>.
Patent GB-1434094-A (GB)
Title: Air distributing apparatus for air-conditioning or ventilating  installations
IPC: F24F11/76
Filed: 1973-05-07
Abstract: 1434094 Ventilators DANFOSS AS 7 May 1973 5 May 1972 21584/73 Heading F4V An air supply and distributing device for maintaining a constant temperature and air flow pattern in the living space of a room comprises a horizontal supply duct 2 having an outlet opening 8 in a wall of the room, means for supplying air to opening 8 at a variable temperature or volume flow rate, baffles 9 adjustable by a device 11 to vary the angle of emergence to the horizontal of airflow through the opening 8, the air supply means and the device 11 being simultaneously operable in response to a temperature responsive device 4 in the room, and the arrangement being such that the baffles 9 are rotated anticlockwise, as shown, in dependence upon reduction of the temperature or volume flow rate of the air supplied to the opening 8. The device is otherwise substantially the same as the device described in Specification 1,433,925.
Patent GB-1436666-A (GB)
IPC: C01G37/14
Filed: 1974-05-15
Abstract: 1436666 Chromic acid; chromates TOKICO Ltd 15 May 1974 [21 May 1973 20 Dec 1973] 21662/74 Heading C1A Chromate anions are removed from effluent aqueous solutions, by treating them with a reducing agent and, if necessary, adjusting the pH, so as to precipitate Cr(OH) 3 , redissolving the Cr(OH) 3  in alkaline (pH # 7.5) H 2 O 2  solution (as the chromate), and contacting this secondarily reformed chromate solution with an acidic cation-exchange resin substituted with hydrogen ions to form an aqueous solution of chromic acid H 2 CrO 4 . The effluents so treated are from the regeneration of basic anion-exchange resins used in the purification of chromate-containing industrial waste water. Suitable reducing agents include ethanol NaNO 2 , NaSO 3  and the hydrogen sulphites of sodium, potassium, ammonium or calcium.
Patent GB-1430101-A (GB)
Title: Carmera shutter
IPC: G03B9/18
Filed: 1973-05-07
Abstract: 1430101 Camera shutters SEIKO KOKI KK 7 May 1973 [8 May 1972] 21675/73 Heading G2A A camera shutter comprises at least one group of blades 3 pivotally connected directly or indirectly to a pivotable lever 2 and means 1b, 4a which constrain the blades to move parallel to a side of a rectangular aperture 1a. The shutter shown comprises a base 1 having an aperture 1a, a group of opening blades 3a, 3b, 3c and a group of closing blades 7a, 7b, 7c which open and close the aperture respectively. Blades 3a, 3b, which carry a substantially triangular piece 5, and 3c are pivotally connected at 2b, 2c and 2d respectively to the operating lever 2, and at 4a, 4b and 4c respectively to an auxiliary lever 4. Lever 2 is pivotally mounted on the base 1 at 2a and is connected to the auxiliary lever 4 by piece 5. The pivot pin 4a, which inter-connects lever 4 and blade 3a, is received in an arcuate slot 1b. To open the aperture, lever 2 is rotated clockwise, the constraint placed on the movement of the blades by the linkage 2, 4, 5 and the pin 4a in slot 1b causing them to move parallel to the side of the aperture. To close the aperture, a lever 6, which is connected to the blades 7 and auxiliary lever 8 in a similar manner, is rotated clockwise.
Patent GB-1520593-A (GB)
Title: Push-button electrical switch
IPC: H01H13/50
Filed: 1976-05-25
Abstract: 1520593 Retractive switches HEWLETTPACKARD Co 25 May 1976 [3 July 1975] 21706/76 Heading H1N A pushbutton electrical switch comprises a slidable plunger 12 having a tab 28 for engaging and deflecting a cantilevered contact 26 when a button 14 attached to the plunger 12 is moved against the bias of a leaf spring 20 which is mounted between abutments 22, 24 on the switch body 10 and plunger 12. The switch body 10 is provided with posts (48, 58) (Fig. 6, not shown) which are inserted in holes in a printed circuit board 16. The contact 26 is mounted on the post (48) and is provided at one end with fingers which engage a conductor pad 32 or bridge two or three conductor pads on the printed circuit board 16 when the button 14 is depressed. The leaf spring 20 buckles when the switch is actuated to provide the operator with a tactile and audible feedback. The switch may be illuminated by mounting a light emitting diode 34 on the board 16 within the plunger 12 and by providing the button 14 with a transparent window 18. The plunger 12 is provided with ribs (40, 42) engaged in slots (44, 46) in the body 10.
Patent GB-905409-A (GB)
Title: Improved shuttering system for casting concrete
Inventor: CHASE ALFRED GABRIEL
IPC: E04G11/48
Filed: 1959-06-24
Abstract: 905,409. Shuttering for casting floors &c. SCAFFOLDING (GREAT BRITAIN) Ltd. June 23, 1960 [June 24, 1959], No. 21726/59. Class 20 (2). Shuttering for a floor comprises panels 12 supported at their corners on platforms 10 on the heads of props, for the central area of the floor and panels supported on beams 26, 27 for the surrounding area against the wall, the beams 27 being located by the bent flanges 15, Fig. 8, of the panels engaging projections 11 on the platforms. Each beam 27 rests on a platform 10 at one end and by means of a right - angle bracket 31 welded to the beam on a block on the wall 25 at the other end. Each beam 26 has brackets at both ends resting respectively on a beam 27 and a block on the wall. A small panel 33 is placed across the girders 27 and boards are placed on the beams 26. Specification 905,410 is referred to.
Patent GB-782574-A (GB)
Title: Caps for necked containers
Inventor: SENIOR HENRY
IPC: B65D41/04
Filed: 1954-07-26
Abstract: 782,574. Container closures. BRITISH XYLONITE CO., Ltd. July 19, 1955 [July 26, 1954], No. 21740/54. Class 125(3). A screw cap closure 36 has projecting downwardly from the underside of the head a surface 37 with a central recess 39 and one or more annular teeth 38 to make line sealing contact with the container mouth. In a modification concentric ribs 42 are provided, Fig. 5. In another modification the teeth or ribs bear on a ply stopper within the container mouth. In yet another modification, Fig. 8, the closure has also a depending sleeve 48 which fits into the container mouth.
Patent GB-1023708-A (GB)
Title: Pesticidal phosphorylated mercaptals and mercaptoles
IPC: C07F9/09
Filed: 1963-05-30
Abstract: The invention comprises compounds of formula <FORM:1023708/C2/1> where alkylene contains 1-3 carbons; X is oxygen or sulphur (same or different); R and R1 are C1-8 alkyl; R2 is C1-8 alkyl, carbalkoxyalkyl, benzyl, chlorobenzyl, phenyl, alkylphenyl or halophenyl; R3 is hydrogen, C1-8 alkyl, phenyl or <FORM:1023708/C2/2> where R5 and R6 are C1- 8 alkyl; and R4 is C1- 8 alkyl, carbalkoxyalkyl, benzyl, chlorobenzyl, phenyl, alkylphenyl, halophenyl or <FORM:1023708/C2/3> where R7 and R8 are C1- 8 alkyl. They are prepared by reacting <FORM:1023708/C2/4> with HSR2 and/or HSR4, optionally in the presence of an acid catalyst.ALSO:Pesticidal compositions comprise organophosphorus compounds of formula <FORM:1023708/A5-A6/1> where alkylene contains 1-3 carbons, X is oxygen or sulphur (same or different), R and R1 and C1-8 alkyl, R2 is C1-8 alkyl, carbalkoxyalkyl, benzyl, chlorobenzyl, phenyl, alkylphenyl or halophenyl, R3 is hydrogen, C1-8 alkyl, phenyl or <FORM:1023708/A5-A6/2> where R5 and R6 are C1-8 alkyl and R4 is C1-8 alkyl, carbalkoxyalkyl, benzyl, chlorobenzyl, phenyl, alkylphenyl, halophenyl or <FORM:1023708/A5-A6/3> where R7 and R8 are C1-8 alkyl. Aqueous dispersions, solutions, wettable powders, vapours and dusts are specified.
Patent GB-1291810-A (GB)
Title: Improvements in and relating to optical projection apparatus
IPC: G03B21/00
Filed: 1969-12-15
Abstract: 1291810 Stereoscopic projection apparatus RICOH K K 15 Dec 1969 [30 Dec 1968] 21758/72 Divided out of 1290892 Heading G2A Stereoscopic projection is provided by securing first and second projectors 44, 47 to a chair 41 on either side of an observer, the upwardly directed projection beams being thrown forward on to a reflex projection screen by mirrors 42, 45 so that the observer sees left and right eye images with left and right eye respectively using the naked eyes. Half-ring mirrors may replace mirrors 42, 45 in which case each light-source comprises a half-toroidal mirror and a similarly shaped condenser lens.
Patent GB-460893-A (GB)
Title: Mechanical toy apparatus
IPC: A63F7/00
Filed: 1935-08-02
Abstract: 460,893. Toys ; measuring forces. COOLEY, H. Aug. 2, 1935, No. 21900. [Class 132 (iii)] [Also in Group XIX] A whirling toy comprises handle Hand spindle S on which are rotatably mounted two drums A and B interconnected by a spring E, the drum A having attached to it a cord F passing a roller R and through a hole f<1> in the drum B and being provided with a stop G and a ball or ring W. The pull on the cord F at any time during the whirling motion can be measured by pushing the drum B with its crinkled end b <1> into engagement with the crinkled disc D fixed to the drum A, a pointer P on the end of the drum A reading against graduations on the end of the drum B. Alternatively, graduations may be marked around the edge of the disc D and an index marked on the end of the drum B.
Patent GB-239517-A (GB)
Title: Improvements relating to the manufacture of piston rings
IPC: B23P9/00
Filed: 1925-09-02
Abstract: 239,517. Willaredt, A. Sept. 8, 1924, [Convention date]. Void [Published under Sect. 91 of the Act]. Drawings to Specification. Piston packing.-A split ring is made from an over-size circular blank in which a gap is cut, the ring being reduced to the required curvature to be circular when closed by penning the outer surface only. The peening blows may be of equal intensity but at increasing intervals from the ends to the middle, or at equal intervals but decreasing intensity from the ends to the middle, or a combination of both methods may be employed. The outer periphery is finally trued.
Patent GB-904391-A (GB)
Title: Improvements in or relating to magnetic core registers
Inventor: COATES HAROLD NOEL
IPC: G11C19/04
Filed: 1960-06-23
Abstract: 904,391. Magnetic core storage. INTERNATIONAL COMPUTERS & TABULATORS Ltd. May 18, 1961 [June 23, 1960], No. 22065/60. Class 106 (1). [Also in Group XXXIX] In a register comprising an ordered series of magnetic cores C1 to C24, the cores are read out successively by pulsing drive windings D1 to D25, the same drive pulse reading out a core and writing into the next lower order core. A drive winding, e.g. D3, threads one core, C3, twice in the same sense to produce a field in one direction and the next lower order core, C2, once in the opposite sense to produce a field in the opposite direction. A bias winding B threads all the cores to produce a field in the said one direction and there are common read and write windings R, W, respectively. The circuit LC processes a signal on winding R and retransmits it after a delay equal to the interval between drive pulses on winding W. A pulse on drive line D3 in combination with the bias current switches core C3 rapidly if it stores a one, the same pulse in combination with a pulse on winding W but against the bias current switches core C2 more slowly to store a one. Thus there is no interference between the switching outputs of C3 and C2.
Patent GB-775686-A (GB)
Title: Improvements in or relating to durene production
IPC: B01D9/00
Filed: 1954-07-28
Abstract: In recovering durene from hydrocarbon mixtures of boiling-point 270-400 DEG  F. containing 5-40 per cent of durene, the mixture is chilled in the presence of at least 10 per cent of a liquefied normally vaporous hydrocarbon, e.g. propane, propane with ethane and butane, ethylene, ethylene with propane, and mother liquor is separated from the slurry of durene crystals so produced.  Durene crystals in the product may be allowed to grow at 70-110 DEG  F. for not less than 4 hours, whereupon a durene product of 95 per cent or more purity may be separated by centrifuging.ALSO:In recovering durene from hydrocarbon mixtures of b.pt 270-400 DEG F. containing 5-40 per cent of durene, the mixture is chilled in the presence of at least 10 per cent of a liquefied normally vaporous hydrocarbon, e.g. propane, propane with ethane and butane, ethylene, ethylene with propane, and mother liquor is separated from the slurry of durene crystals so produced.  Durene crystals in the product may be allowed to grow at 70-110 DEG F. for not less than 4 hours, whereupon a durene product of 95 per cent or more purity may be separated by centrifuging.
Patent GB-329228-A (GB)
Title: Improvements in sprinkler heads for fire extinguishing apparatus
IPC: A62C37/10
Filed: 1929-07-18
Abstract: 329,228. Doughty, H. W. Dec. 6, 1928. [Convention date]. Sprinklers, automatic-In a sprinkler head comprising a base secured to a nozzle with a bore in the base leading to the nozzle outlet, the latter is closed by a frangible diaphragm which is further held in place by a fusible plug 9 screwed or otherwise held in the outlet and resting directly thereon. The diaphragm may comprise a disc of metal foil 14 held between washers 10, 11 clamped between the nozzle 8 and the base 5. The washers 10, 11 may be coated before assembly with a luting material, such as glycerine mixed with litharge, or nitrocellulose paste. The plug 9 is of wax, stearine, or other organic compound of low melting point.