baber/WOPTO huggingface dataset:
Patent GB-711268-A (GB)
Title: Improvements in or relating to apparatus for televising from cinematograph film and the converse
Inventor: BEDFORD LESLIE HERBERT
IPC: H04N3/36
Filed: 1950-08-02
Abstract: 711,268. Television; photo-electric control systems. MARCONI'S WIRELESS TELEGRAPH CO., Ltd. Oct. 22, 1951 [Aug. 2, 1950], No. 19341/50. Class 40 (3). [Also in Group XXXV] In a film scanning arrangement, either for the recording of received television pictures upon, or for the development of television picture signals from, kinema film, the scanning raster is maintained in its correct position with respect to the film frames despite the motion of the film through the gate by means of a control system involving the projection of a beam of light through the sprocket holes in the film on to a photo-cell. The invention is applicable both to continuously-advanced and intermittently-advanced systems ; in the latter type of system the invention allows following or " chasing to occur during the pull-down intervals. In one embodiment of the invention described as applied to an intermittently advanced system, a wedge-shaped "light slot" 1, Fig. 1, is focused on to the edge of the film which is blackened to prevent the passage of light except by the sprocket holes 4. The film when stationary is in the position shown and the amplitude of the corresponding current developed by the photocell is such as to effect no control on the position of the raster. During movement of the film, however, the photo-cell current is varied and exercises a varying control on the position of the raster so as to maintain it stationary with respect to the film. In a modification, Fig. 3 (not shown), the position of the slot with respect to the sprocket holes is changed so that normally the narrow tip of the slot is focused on the holes 4. In an alternative embodiment, Fig. 2, the image of a cathode-ray tube scanning spot is focused on the film and scans with respect to the sprocket holes 4 as indicated by the scanning path 6. The phase of the pulse developed as the spot passes the hole 4 is compared with that of the scanning waveform in a suitable comparator circuit and the output is used to effect both a retro-active control on the position of the auxiliary scan and a control on the position of the main raster scanning the film. A double-beam cathode-ray tube may be used to provide the main raster and auxiliary scan or alternatively two separate cathode-ray tubes together with a suitable optical system may be used. In this arrangement the edges of the film need not be blackened since by the use of limiter circuits the amplitudes of the pulses developed in the photocell may be made unimportant. The repetition rate of the auxiliary scan is preferably arranged to be an integral multiple of the line scanning frequency. By means of suitable correcting arrangements in the control circuits, the main raster may be made to follow the movement of the sprocket holes 4 accurately despite the fact that the finite gain and the presence of time constants in the loop circuit prevents the accurate following of the holes 4 by the scanning path 6.
Patent GB-657482-A (GB)
Title: Improvements in or relating to radio aerial systems
Inventor: RAMSAY JOHN FORREST
IPC: H01Q13/12
Filed: 1947-07-18
Abstract: 657,482. Aerials. MARCONI'S WIRELESS TELEGRAPH CO., Ltd. July 18, 1947, No. 19345. [Class 40 (.uii)] , In order to eliminate the vertical polarization component from the radiation, an aerial system including a horizontal dipole 1 is situated in a closed tubular wave-guide 2 provided with a series of equally-spaced half-wavelength slots 5. The dipole is mounted one quarter wavelength from the end-plate 3 and one half-wavelength from the slot centres. A travelling H 1  wave results and excites the slots so that they function as an array of magnetic dipoles producing radiation free from vertical polarization components. The degree of excitation varies with the slot disposition with respect to the dipole axis, and the horizontal pattern produced is a figure-of-eight which may be rotated by rotating the dipole. A horizontal loop radiator 6 is located in the plane bisecting the slots and such a combination of dipole and loop has application as an omni-directional range beacon. The vertical polar diagram is that due to a magnetic dipole so that the vertical polar diagrams arising from the two aerial elements are identical. Energy from the two elements appears to originate from the same point source. Fig. 1 (not shown) shows a dipole alone in a half-wavelength resonant slotted wave-guide. A unipole may replace the dipole.
Patent GB-530812-A (GB)
Title: Improvements in float-operated liquid level indicators
IPC: G01F23/34
Filed: 1939-07-04
Abstract: 530,812. Indicating liquid level. LIGHT PRODUCTION CO., Ltd., and HUTCHINGS, P. J. July 4, 1939, No. 19416. [Class 123 (i)] In a liquid level indicator having a pivoted float connected by gearing to a pointer, the float arm 18 is carried by a fork 15 having bearings 16, 17 adjacent to but separate from the bearing of the first crown gear wheel 9. The wheel 9 meshes with a pinion carried by an electromagnet the movements of which are followed by a pointer outside the casing. The crown wheel 9 is mounted on a spindle 10 journalled in bosses 11, 12 on bracket 14, and the fork 15 is also journalled on the spindle 10. Transmission between the fork 15 and wheel 9 is effected by a steel wire 20 coiled on the wheel hub and engaging a hole in the fork. A modification is described in which the gear wheel is outside the fork and the float arm moves parallel to the indicator dial. In simpler form, the float arm may be formed by an extension of the wire 20, the end of which is bent around a cork float.
Patent GB-147480-A (GB)
Title: Improvements in sighting devices
IPC: G02B23/16
Filed: 1920-07-08
Abstract: 147,480. Zeiss, C., [Firm of]. April 28, 1917, [Convention date]. Magnetic c o m - passes. - A sighting- device comprises a compass with a fixed graduated circle and a sighting - telescope rotatably mounted on the casing in such a manner that its axis of rotation coincides with the axis of the compass, and the axis of inspection coincides with the axis of rotation. The sighting-telescope consists of a reflecting prism a<1>, an objective a<2>, a roof prism a', and an eyepiece comprising lenses a<4>, a<5> between which is situated the prism a<6>. Lines A on the graticule disk a<8> are used as sighting lines. Rotation is effected by a worm c engaging a worm wheel b<1> on the compass casing b. To the upper portion of the compass case b is secured a graduated glass disk b<10>, over which rotates a disk b<7> having a zero mark b<8> (C, Fig. 3). The graduations and zero mark are projected into the outer portion of the field of view of the eyepiece by means of a lens e and a prism d in contact with the prism a<6> at the outer part of its hypotenusal face only. The object viewed is thus only visible in the middle portion of the field of view and the compass graduations and the compass direction indicator in the periphery of the field. The graduations D and indicator C may be illuminated by a lamp h in a recess at the side of the casing, from which also the graduated disk a<8> is illuminated through the prism i as shown. In use, the telescope is adjusted so that the point B coincides with the zero of the graduation D and the instrument is fixed in its support on the pivot b<2> so that the sighting line intersects the given directing point. This gives the direction of the line of sight with the magnetic meridian and then the telescope may be rotated to observe the desired object and the angle through which rotation is made read off directly.
Patent GB-959549-A (GB)
Title: Power steering systems for articulated vehicles
IPC: B62D5/09
Filed: 1963-05-16
Abstract: 959,549. Steering vehicles. GENERAL MOTORS CORPORATION. May 16, 1963 [June 6, 1962], No. 19466/63. Heading B7H. A power-operated steering system for an articulated vehicle comprises a pump 20 supplying pressure fluid drawn from a reservoir 24 to a steering circuit comprising a pair of jacks 16, 18, an hydraulic accumulator 40 and a control valve 44 operated by a steering wheel 14, the jacks steering the vehicle by moving the fore part relatively to the rear part. The supply conduit leads from a manifold 28 which includes a check valve 30 and a return line 56, 58 to reservoir in which is included a flowrestricting orifice 34 and a valve 32 which is subjected to counter pressure from an enginedriven pump so that the valve opens when the engine is not turning and the pressure fluid from the accumulator 40 bleeds off to reservoir. The steering valve 44 is of the closed centre-type.
Patent GB-256959-A (GB)
Title: Improvements in electric welding apparatus
IPC: B23K11/31
Filed: 1926-08-06
Abstract: 256,959. Budd Manufacturing Co., E. G., (Assignees of Meadowcroft, J. W.). Aug. 15, 1925, [Convention date]. Heating by electricity.-An electric spot welding machine, particularly for welding the parts of automobile bodies, comprises a pair of relatively movable arms, each having a carrier for a number of co-operating electrodes arranged so that the welding circuit is closed by only one pair of electrodes at any one time so as to operate on parts of different character without changing the set-up of the machine. The arm 10 is provided with a vertically movable ram 12 having an arm 13 carrying a holder 15 for a pair of removable copper electrodes 16, 17 of different lengths, which may be provided with removable offset points 19 and are secured to the holder by clamps 18. The lower arm 11 has secured thereto by bolts 20 passing through elongated slots, a holder 21 to which is removably secured by a clamp 30 a copper electrode 25 having a threaded socket at its upper end engaging a stud 28 for securing a second copper electrode 26, which is prevented by a bolt 29 from lateral displacement. The electrode 25 has a projecting foot 26<1> and the electrode 26 an upwardly projecting point 31. The electrode 17 passes through an aperture 24 or offset in the holder 21 so as to preclude any interference of one set of electrodes with the other. The electrodes 16, 17 are secured at such a position that the distances between the coacting points of each set are the same so that when work is placed between one set, the other set are separated by the thickness of the work and are thus prevented from by-passing the current. The electrode 17 may be arranged with its offset portion at the other side of its axis, an electrode 25 with a correspondingly longer foot being used. The electrodes 16, 17, 25 have water connections 32, 33, 34 separately connected to a supply of cooling water, or connected in series to, form part of a continuous circulating system.
Patent GB-858230-A (GB)
Title: Improvements in or relating to amplitude modulators
Inventor: SIEBER PETER WILLIAM
IPC: H03C1/58
Filed: 1958-06-18
Abstract: 858,230. Amplitude modulating systems. MUIRHEAD & CO. Ltd. April 7, 1959 [June 18, 1958], No. 19508/58. Class 40(5). An amplitude modulator (Fig. 1) in which the modulating signal fm is applied across diagonal AC of bridge ABCD, the arm AB of which consists of a further bridge abcd comprising silica or germanium diodes D1, D4 and linier and parallel resistors. The carrier fc is applied across diagonal bd and the diodes are so connected that they all only conduct on alternate halfcycles of the carrier frequency so that the impedance of arm AB will switch at the carrier frequency from low to high impedance. (The output is taken across diagonal BD). In another embodiment (Fig. 4, not shown) the position of conecting points of some of the arms of the bridge abcd may be varied by potentiometers.
Patent GB-811260-A (GB)
Title: Improvements in or relating to mobile rotary cranes
IPC: B66C23/36
Filed: 1957-06-21
Abstract: 811,260. Jib cranes; balancing. KASSBOHRER FAHRZEUGWERKE G.m.b.H., K. June 21, 1957 [June 29, 1956], No. 19529/57. Class 78 (4). The removable balance weight 11 of a mobile slewing jib crane is lifted into position to counterbalance the crane by an auxiliary hoist carried by a jib 13 oppositely directed from the hoist jib 5. In the construction illustrated the jib 13 telescopes into the frame 12 of the main crane and can lift the counterweight 11 from the chassis 1 of the vehicle so that it can be lowered to rest on a pair of traversely spaced telescoping arms 10 projecting from the slewing part of the crane. Outriggers 20 may assist in supporting the crane in use, and when not in use the jib 5 may rest on the top of the cab 21. The length of the telescoping arms 10 may be adjusted manually or automatically in accordance either with the load on the crane or with the derricking out of the jib. For example, a bight in the hoist cable may move the arms 10 against a biasing spring so that the extension of the arms 10 depends on the load raised.
Patent GB-743441-A (GB)
Title: Apparatus for generating smoke artificial fog, aerosols, and like dispersions
Inventor: PARIS FRANCOIS GILBERT
IPC: A01G13/06
Filed: 1953-07-14
Abstract: 743,441. Smoke, fog, and the like generators. SOC. NATIONALE D'ETUDE ET DE CONSTRUCTION DE MOTEURS D'AVIATION, and FRANCAIS, ETAT, MINISTERE DE LA DEFENSE NATIONALE. July 14, 1953 [July 25, 1952], No. 19537/53. Class 81(1). In an apparatus for generating smoke, artificial fogs, acrosols and the like dispersions comprising a pulse jet unit having an exhaust duct designed for imparting velocity to the pulses of the combustion gases generated in the unit, there is provided a chamber having a volume and a flow cross sectional area substantially larger than the volume and.the area of the duct and having an inlet connected with the duct and an outlet opening to the atmosphere and being otherwise substantially sealed from the atmosphere and means are provided for injecting the substance to be dispersed into the combustion gases at a point upstream of and remote from the outlet. As shown in Fig. 1, combustion gases produced in a chamber 2 by a burner 1a escapes through exhaust pipes 3, 4 and vaporizes the dispersible substance e.g. oil fed through a sprayer 5 so that on reaching free air at the end of the exhaust pipe 4 the vapour condenses in particles of the order of 1 micron to form a fog or aerosol, which condensation may be accelerated by injecting liquid e.g. water through a spraying device 6 in the neighbourhood of the outlet of the exhaust pipe. Further spraying with water through a spray 6a inside the exhaust pipe 4 on the intake side or in the neighbourhood of the spray 5 is effected to prevent the substance to be dispersed taking fire or breaking up or cracking. In a modification, Fig. 2 (not shown), a chamber of relatively large volume compared with the exhaust pipe is provided at the end of the exhaust pipe so that a semicontinuous flow of gas at a uniform temperature passes out of the outlet orifice the spraying nozzle for the substance to be dispersed and the water spray device 6a delivering into this chamber. In another embodiment shown in Fig. 3 a tubular member 8 surrounds the combustion chamber 2 through which the fluid to be dispersed circulates before passing to the spray 5 in order to recover some of the heat of combustion. Specification 731,798, [Group XII], is referred to.
Patent GB-596622-A (GB)
Title: An improved method of and apparatus for brazing and like operations
IPC: B23K3/04
Filed: 1945-07-31
Abstract: 596,622. Making heat-exchangers. PEET, A. July 31, 1945, No. 19576. [Classes 83 (ii) and 83 (iv)] Soldering.-Elements such as fins, ribs or tubes, are soldered or brazed to hollow metal bodies to form articles such as heat-exchangers by assembling the parts with applied solid fusible metal and rotating the body in alternately opposite directions about its axis during heat treatment within a hot gas chamber to melt the fusible metal and cause it to flow in alternate directions round the body and thus prevent the formation of deposits or blobs of fusible metal. The fusible metal may be in the form of strips, rods, paste or composition applied along the whole length of the junction between the elements and the body. In joining a pipe coil 12 to a shell 11, which may be cylindrical, conical, oval or polygonal with parallel or tapered sides, the fusible metal may be in the form of C-shaped clips 20 with curled edges 21 and central slots 22 and applied to the pipe with the curled edges on the outside and the slots inside so that the pipe coil may make direct contact with the shell the ends of the clips being inclined so that they may abut against one another when threaded on the pipe and will conform to the curvature of the pipe coil. The shell with pipe coil and clips and with flux applied, if necessary, is placed on a member 10 on shaft 9, which may be inclined as shown or may be horizontal or vertical, and rotated by a reversible electric motor 15 which may rotate at 50 revolutions per minute and may reverse after every ten revolutions in one direction. The work is surrounded by a hood with an opening below which torches 16 are provided to effect the heating. One end of the hood may be open for the introduction of a torch 17 which may be moved manually or automatically backwards and forwards inside the shell to give an even distribution of heat. The torches may be supplied with fuel through valves manually controlled or mechanically controlled in conjunction with the starting and stopping means of the motor. According to the Provisional Specification the work may be moved axially relatively to the torches or vice-versa.
Patent GB-422474-A (GB)
Title: Insulator for ignition plugs
IPC: H01T13/38
Filed: 1933-07-11
Abstract: Refractory materials which are devoid of free silica and are suitable as insulators for ignition plugs, comprise 92 per cent or more of alumina together with 8 per cent or less of a different inorganic oxide or oxides having physical properties approximating to those of alumina, where the whole is sintered at approximately 1600 DEG  C. Suitable additional oxides are titanium oxide, magnesium oxide and beryllium oxide.  In an example, a mixture of 96 parts corundum, 2 parts titanium oxide and 2 parts magnesium oxide are heated, the product ground, mixed with a little acid, moulded, and fired at 1630 DEG  C.  It is stated that a solid solution of the additional oxides in the alumina is formed.  Specification 326,279, [Class 22], is referred to.  The Specification as open to inspection under Sect. 91 comprises also the use as the main component of magnesia and beryllia and as the additional oxide, calcium, strontium barium and zirconium oxides.  This subject-matter does not appear in the Specification as accepted.
Patent GB-898376-A (GB)
Title: Improvements in a locking device for electrical instruments having movable parts
IPC: H01H50/32
Filed: 1960-06-03
Abstract: 898,376. Thermal switches; switch cases. WESTINGHOUSE AIR BRAKE CO. June 3, 1960 [June 9, 1959], No. 19682/60. Class 38 (5). [Also in Groups XXV and XXXVI] A device for locking the movable part of a relay comprises a body 58 secured to the transparent casing 14 and having a threaded hole 58d for a screw 62 which can move a plunger 56, against the bias of a spring 70, so that the bifurcated ends 56a, 56b of the plunger hold a movable part 35 in its neutral position during transport of the relay. The spring 70 acts between a head 64 of the plunger 56 and a split pin 68 which is secured in holes 66 in the body 58 and which prevents rotation of the plunger. The thermal relay shown in Fig. 1 has adjustable fixed contact springs 22, 24 engageable by separate contacts 34, 32 carried by an insulating member 31 which also carries the part 35. The member 31 is secured to the end of a bimetallic strip 26 having a heater 52 and secured to an auxiliary oppositely.disposed bimetal strip 28, fixed to the relay base. Flexible connectors 36, 38, 40, 42, 44, 46 connect the contacts and heater terminals to fixed strips 47.
Patent GB-1318328-A (GB)
Title: Process of varying the characteristics of a semiconductor device
IPC: G11C17/06
Filed: 1971-06-09
Abstract: 1318328 Read only memory INTERSIL Inc 9 June 1971 [13 July 1970] 19743/71 Heading G4A An integrated circuit read only memory is produced by forming a matrix of transistors connected at the cross-over points of rows and columns so that each forms two diodes connected back-to-back with the transistor base unconnected, applying pulsed power in a forward direction across the base-collector junction and in a reverse direction across the base-emitter junction and monitoring current flow to stop the pulsed power when the base-emitter junction is shorted. Pulses of power from a generator 26 may be interspersed with test pulses from generator 27 of a value such that when the resistance of the transistor decreases to a predetermined value NAND gate 28 operates latching circuit 32 to gate generator 26 to an off condition. Each transistor (Fig. 6) has an emitter region 41, a base region 42 and a common collector region 43 which serves as a row or column of the matrix. The transistor may be formed by diffusion of a donor impurity into silicon to form the common collector 43 followed by diffusion of an acceptor type impurity to form the P-type base and diffusion of a donor impurity to form a heavily doped emitter region N +. An oxide protective coating 47 is provided on the silicon wafer.
Patent GB-260681-A (GB)
Title: Improved manufacture of artificial silk threads from viscose
IPC: D01F2/08
Filed: 1925-08-05
Abstract: 260,681. Bass, H., and Erste B÷hmische Kunstseidefabrik Akt.-Ges. Aug. 5, 1925. Cellulose xanthates, processes for making filaments from.-Molasses or the residual liquors obtained from the distillation of alcoholic liquors are added to the precipitation baths used in the spinning of viscose silk; the baths contain also sulphuric acid and alkali sulphate, the former being in proportions greater or less than those required to produce acid sulphate, or they contain sulphuric acid and the salts of polyvalent metals, such as the sulphates, chlorides, and nitrates of magnesium, aluminium, and cerium. The latter baths may also contain sodium, ammonium, or other alkali sulphate in the proportions specified above relatively to the sulphuric acid present. The threads obtained show marked softness, lustre and covering-power. Specifications 21405/07 and 5595/08, [both in Class 2, Acids and salts, Organic &c.], are referred to,
Patent GB-1506500-A (GB)
Title: Nickel complexes and their use in stabilizing sensitive material
IPC: C07F15/04
Filed: 1975-05-12
Abstract: 1506500 Nickel complexes of pyrazole-5-oxy Compounds SANDOZ Ltd 12 May 1975 [13 May 1974] 19782/75 Heading C2C [Also in Division C3] Novel nickel complexes comprising two monodentate nickel coordinated 1,3-hydrocarbyl - 4 - (greater than C 1 )acyl - pyrazole - 5- oxy ligands and one bidentate or two monodentate nickel coordinated primary or secondary amine ligands are prepared by complexing the appropriate amine with the appropriate pyrazole-5-oxy nickel complex or, together with the appropriate pyrazolone-(5)- compound, in free or alkaline metal salt form, with a complexable nickel salt. The novel complexes are useful for stabilizing polymers against UV light.