baber/WOPTO huggingface dataset:
Patent GB-472583-A (GB)
Title: Improvements in or relating to electron discharge devices
IPC: H01J25/52
Filed: 1937-03-01
Abstract: 472,583. Thermionic valves; electric resonators. MARCONI'S WIRELESS TELEGRAPH CO., Ltd. March 1, 1937, No. 6092. Convention date, Feb. 29, 1936. [Classes 39 (i) and 40 (iii)] An electron-discharge device for use at high frequencies comprises a U-shaped member, the legs of which are of large cross-section and mass, the inner faces of the legs being closely spaced, flat and parallel; a pair of anode segments at the free ends of the legs on the inner surfaces thereof and having oppositely disposed semi-cylindrical surfaces providing a cylindrical chamber, the axis of which is parallel to the flat surfaces of the U-shaped member and contains a straight thermionic cathode. In the split-anode magnetron shown in Fig. 1, the U-shaped member 14 has its ends 18 formed into semi-cylindrical anode surfaces which surround the axiallv disposed filamentary cathode 20. The outer surface of member 14 is coated with carbon to increase radiation, the inner parallel faces and the thin edge strips 17 being left uncoated. The assembly is supported by an upper mica spacer 26, and a lower mica spacer 27 carried on a glass or ceramic cross 24 supported on the cathode leads 13. Supports or leads 22 for the ends of the member 14 are carried on the cross 24. A pair of non-magnetic shields 21, carried on the cathode leads, protect the envelope from the impact of electrons concentrated thereon by the longitudinal magnetic field set up by coils 28. The shields may be replaced by a single cylinder. A flexible connection 25 supplies the anode voltage. In a modification, the U-shaped member is secured to a metal portion of the envelope which may be merely an end plate or, as in the form shown in Fig. 5, may be a cup-shaped member 32 surrounding the assembly. In this form a cooling jacket 34 is provided.
Patent GB-660239-A (GB)
Title: Improvements in gas purifiers of the tower type
IPC: C10K1/22
Filed: 1949-03-07
Abstract: 660,239. Gas purifiers. BALFOUR & CO., Ltd., H., and BUREAU, A. C. June 2, 1950 [March 7, 1949], No. 6102/49. Class 55 (ii). In a gas purifier of the type in which towers contain trays of purifying material, the towers are formed as compartments, in a common structure, by transverse partitions, the compartments being so interconnected by piping that gas can be passed through the compartments in any consecutive order, and any of the compartments can be disconnected from the remaining compartments. As shown, the common structure 1 is of rectangular form, the two long sides being stiffened to carry rails 5 on which runs a crane 6 for carrying trays to a gravity-operated tippler 7 which tips the spent material into a hopper 8. The compartments are interconnected by pipes 4. A tray 9 is shown resting on the ground for re-filling, and superposed trays 10 are shown in one compartment 3.
Patent GB-654587-A (GB)
Title: Improvements in and relating to television receiver circuits
IPC: H04N5/62
Filed: 1948-02-27
Abstract: 654,587. Multiplex radio signalling. BRITISH THOMSON-HOUSTON CO., Ltd. Feb. 27, 1948, No. 6121. Convention date, June 26, 1946. [Class 40 (v)] Relates to combined audio and television systems of the kind described in Specification 663,167, as open to inspection under Sect. 91, in which the picture signal and the audio signal of a television system are sent on different carrier frequencies, and the received waves (preferably after conversion to intermediate frequencies) are passed to a detector whose output comprises the detected picture signal mixed with a wave of the difference frequency modulated by the audio signal. The picture signal may be transmitted as amplitude modulation, and the audio signal as frequency modulation. The invention consists in providing means for blocking the audio channel except during. the synchronizing intervals between the picture signals. The general arrangement of the receiver is shown in Fig. 1, the received carriers being heterodyned by a local source 3 and passed to a wideband I.F. amplifier through a filter 4 which reduces the amplitude of the sound I.F. relative to the picture I.F. The mixed wave passes to a detector 10 which yields the picture signal, and also gives rise to a wave of the difference frequency, modulated in frequency by the audio signal. After amplification at 11, the composite wave is fed to the picture reproducer 12 through a tuned circuit 15 which selects the difference frequency and feeds it through a limiter 17, discriminator-detector 18 and audio amplifier 20 to the loud-speaker 21. The discriminator may be of the phasing type (Fig. 2, not shown). In Fig. 3, which shows the present invention, the limiter amplifier 31 in the sound channel has its screen grid connected through a condenser 55 and resistor 54 to the transformer 53 by which the line scanning- coils 50, 51 are energized. Oppositely-connected diodes 56, 57 provide positive voltage pulses for the screen grid only during the blanking intervals, so that waves are not fed to the discriminator 18 when picture signals are being received. As the tuning of the sound channel is independent of the local oscillator frequency, push-button tuning may be employed. Reference has been directed by the Comptroller to Specifccation 639,926.
Patent GB-477803-A (GB)
Title: Painter's palette
IPC: B44D3/02
Filed: 1937-03-02
Abstract: 477,803. Artists' palettes. WEEBER, F. March 2, 1937, No. 6188. Convention date, March 3, 1936. [Class 11] In order to facilitate the selection of colours, the paint cups are arranged in concentric circular rows, which are divided into four sectors by radial ribs f, Fig. 2, and the colours are so arranged that the groups containing the complementary colours yellow-blue and red-green are respectively in a pair of opposite sectors. The palette consists of a plate a of sheet metal, artificial resin, &c. in which the paint cups e are formed by depression. ,The cups of the inner circle hold the prime 'colours, and those of the outer circle hold different tones-belonging to the same group. Each cup has at its centre an elevation g, Fig. 4, on which the paint is placed. Around the cups is arranged a circular group of mixing- surfaces m. Two thumb-holes o are provided. A water-container s, having an inturned rim, and a sieve at about half its height, is mounted in a central bore. The palette can be covered by a lid secured by a strap.
Patent GB-612835-A (GB)
Title: Improvements in dehydration apparatus
IPC: F26B3/28
Filed: 1946-02-28
Abstract: 612,835. Drying fruit &c. FROST, L. C. B. Feb. 28, 1946, No. 6222. [Class 34(ii)] Fruit &c. to be dried is placed in a chamber 1 which may be of glass and is fitted with a removable base 2 and lid 3 with seals 4. Air is exhausted from the chamber 1 by a vacuum pump (not shown) to a condenser 9. A low-power electric heating element 6 or other suitable heater is arranged within the chamber 1 to initiate the evaporation of the moisture content of the material being dried. Ultra violet light may be employed to irradiate the contents of the chamber 1.
Patent GB-415771-A (GB)
Title: Improvements in or relating to electric circuit arangements suitable for use in connection with photo-electric cells
IPC: H01J40/14
Filed: 1933-03-01
Abstract: 415,771. Valve amplifying circuits. MARCONI'S WIRELESS TELEGRAPH CO., Ltd., Electra. House, Victoria Embankment, London, and GILL, E. W. B., Merton College, Oxford. March 1, 1933, No. 6266. [Class 40 (v).] A photo-electric cell 1, sub. jected to varying illumination, is connected in series with a source of potential 3 of such value, and a diode 2 so activated, that the diode presents a relatively small resistance to the steady component of the photo-electric current and a large resistance to the fluctuating component. The output is taken across the terminals of the diode.
Patent GB-657747-A (GB)
Title: Improvements in or relating to valve amplifiers
IPC: H03F1/33
Filed: 1947-03-05
Abstract: 657,747. Valve amplifying circuits. DECCA RECORD CO., Ltd., and O'BRIEN, W. J. March 5, 1947, No. 6298. [Class 40 (vi)] The distortion introduced by the non-linear input grid voltage/anode current characteristic of a thermionic valve amplifier is compensated by applying a potential corresponding to the output to an electrode other than the input grid in such a way that the non-linear applied voltage/anode current of the said electrode renders the overall response linear. As shown, part of the output is fed back to the suppressor grid 6 of the valve 1. The feed-back path includes a resistor 7 and condenser 8 in series. The applied voltage/anode current characteristics of the control grid and suppressor grid are such that a substantially linear response is obtained. In a modification, Fig. 3 (not shown), the feed-back is taken from a tap on the anode load.
Patent GB-1306141-A (GB)
IPC: C07C67/00
Filed: 1970-02-10
Abstract: 1306141 Preparation of alkanols; hydration of olefines NATIONAL DISTILLERS & CHEMICAL CORP 10 Feb 1970 [1 April 1969] 6372/70 Heading C2C [Also in Division B1] Alkanols are produced by the hydration of olefins over a catalyst comprising a solid silica gel having a pore volume of 1-2À2 c.c./g. and a surface area of 200-600 m.<SP>2</SP>/g. impregnated with phosphoric acid. Examples describe the preparation of ethanol (and diethyl ether) from ethylene.
Patent GB-580058-A (GB)
Title: Improvements relating to casting moulds
IPC: A61C13/00
Filed: 1944-04-05
Abstract: 580,058. Mould materials. MOND NICKEL CO., Ltd., and DUNLOP, A. April 5, 1944, No. 6382. [Class 83 (i)] In a process for making a refractory mould by mixing a highly refractory material in powdered form with a binder consisting of a solution of at least one organic silicate, forming the mixture into the desired shape and causing it to set, the powder is composed of grains of different sizes, not more than 40 per cent by weight being fine enough to pass a 200-mesh sieve, and is formed into a cream with the silicate solution, surplus liquid being eliminated by vibration before or during the shaping of the mixture. In a modified process, at least 60 per cent by weight of the powder is fine enough to pass a 200-mesh sieve and is formed with the silicate solution into a mixture having the consistency of damp sand, which is compacted into the desired shape. Examples are given of the proportions of grains of various sizes to form powders suitable for each of the above methods. Powdered silicon carbide or sillimanite is preferably used. The binder preferably comprises 15-30 per cent organic silicates, 1.5-3.5 per cent water and 60-83.5 per cent ethyl alcohol or methylated spirits. The organic silicates themselves must contain at least 35 per cent silica and the solution as a whole should be acid and should have a pH value-of from 1.5 to 3.0. In carrying out the first method, the creamy mixture is poured slowly around the pattern with continuous vibration so as to compact the solids and cause surplus liquid to rise to the top. The surplus liquid is removed and the mould subjected to heating at a temperature of from 45‹ to 50‹ C. for from 10 to 12 hours, this causing the silicate solution remaining in the mixture to hydrolyse and bind the solids together. It may then be heated at from 250‹ to 350‹ C. for four hours. In either process, if the pattern is of wax, it may be sprayed with a coating of fine sillimanite powder bonded with a more dilute binder solution. When dry, the coating is preferably immersed in a dilute solution of ammonia to accelerate the hydrolysis of the binder. Any tendency of the sprayed coating to crack may be inhibited by adding 5 per cent by weight of shellac to the alcohol or methylated spirit used in the binder solution.
Patent GB-483175-A (GB)
Title: Improvements in or relating to the production of endless screens of three-end twill wire fabric
IPC: B21F33/00
Filed: 1937-03-04
Abstract: 483,175. Wire-cloths of paper-making machines. KURTZ, H. March 4, 1937, No. 6483. Convention date, March 4, 1936. [Class 96] [Also in Groups IX and XXII] To join the ends of the warp wires of a twill fabric of a Fourdrinier paper-making machine wire-cloth, the ends of the warp wires 1 in each group of three wires 1, 2, 3 are erected, for example by pulling out the last weft wire obliquely upwards. A second wire 3 in each group at one end of the fabric at least is then erected, and un-erected wires at one end are joined to erected wires at the other end by a welding torch. As shown, two out of each three wires may be erected at each end R, V, a central erected wire 3 in each group at one end being joined to an erected wire at the other end as shown in Fig. 5. The fabric may be placed in inclined clamping jaws A, B, Fig. 1, the wires 1 be erected as described, and the wires 3 be then erected by a tool comprising a roller F, Fig. 9, rotatable on a threaded pivot G on a fork on a handle D. The roller F has a guiding rim or flange O, which moves on a track C on the jaw B, and peripheral flutes defining teeth L, each with a step M and a ridge N. The teeth are pitched to jump two warp wires and engage the third, the steps M engaging and erecting the wires and the ridges N preventing slipping. By replacing the roller by a similar roller with teeth which are the mirror images of the teeth L, a second set of wires may be erected.
Patent GB-589011-A (GB)
Title: Improvements in and relating to cowling mountings for the bases of hair dryers
IPC: A45D20/42
Filed: 1945-03-15
Abstract: 589,011. Hair-drying apparatus. HIBBERT, H. March 15, 1945, No. 6486. [Class 81 (ii)] In a hair dryer of the kind in which the blowing unit is mounted on a movable base, the base 3 and parts carried thereby, e.g., the motor and fan 8, are enclosed by an air-tight cowling 6 having only air openings 9 near its bottom edge, and filtering material such as cotton wool is packed between the base and vertical rings 12 and a horizontal ring 10 provided with openings 13, 11 through which air is drawn by the fan. In an alternative construction, the filter material is packed between a single ring 12, ring 10, the base and the cowling.
Patent GB-970599-A (GB)
Title: Frame for interchangeable pictures
IPC: A47G1/06
Filed: 1963-02-18
Abstract: 970,599. Picture frames. FARBENFABRIKEN BAYER A.G. Feb. 18, 1963 [Feb. 19, 1962], No. 6494/63. Heading A4X. A frame for interchangeable pictures comprises a rear wall 1 in the form of a box on to which the picture 2 may be placed and a hood 3 of transparent synthetic material which fits tightly over the box and retains the picture in position. A calendar block 4 is secured to the frame.
Patent GB-115474-A (GB)
Title: An Improved Radius Lever for Braking or Facilitating the Starting of Vehicles.
Inventor: STANIER THOMAS
IPC: B62C5/00
Filed: 1917-05-08
Abstract: 115,474. Stanier, T. May 8, 1917. Energy of moving vehicle, storing and utilizing.-Means for facilitating the starting of and for braking vehicles comprises one or more radius levers E adapted to be rotated by engagement with the vehicle wheel W during backward rotation thereof so as to tension a spring H. The levers are also arranged to abut against stops to lock the wheel. The lever E has a collar F by which it is rotatably mounted upon a saddle B fixed to the wheel axle A. A spring H is connected to the collar F at G and to the saddle at J. A pawl L pivoted on the lever E is adapted to be engaged by a ratchet wheel P on the wheel W. During forward movement of the wheel W the ratchet wheel P lifts the pawl which owing to the inclination of its pivot M as indicated in Fig. 3, moves away out of engagement with the wheel P as it rises and is then able to fall back, the lever E thus being unaffected. When upon backward movement of the vehicle the ratchet wheel P engages the upper side of th pawl the lever E is rotated and the spring H is tensioned so that the subsequent forward movement is assisted thereby. A stop K on the saddle B limits the tensioning movement of the lever E and locks the wheel so as effectively to check further backward movement of the vehicle. The wheel can also be locked against forward movement by inserting a bar in a hole Q passing through the lever E and the tail N of the pawl L so as to fix this pawl with respect to the lever which is then moved by the ratchet wheel P against a stop K<1>. The radius lever can be brought into operative engagement with the ratchet wheel P without the necessity of backing the vehicle by turning it manually by a crow-bar inserted in a longitudinal slot in the lever. The device can be rendered inoperative by throwing back the pawl L. Means for doing this and for locking the pawl with respect to the lever E by a conveniently disposed hand lever or the like may be provided. Fig. 2 shows a pair of levers E arranged to act as a single unit by bolting the pawls L together.
Patent GB-766221-A (GB)
Title: Improvements in or relating to sheet feeders, particularly for printing machines
IPC: B65H1/30
Filed: 1955-03-07
Abstract: 766,221. Sheet-feeding apparatus. FABER & SCHLEICHER AKT.-GES. March 7, 1955 [March 12, 1954], No. 6580/55. Class 100(1) Pile table and supports. A pile raising device for a sheet feeder in which during the continued feeding of the sheet of a temporarily supported nearly used-up pile a new pile is introduced to be seized and lifted by pile raising rails until united with the remainder of the used-up pile is characterized in that the pile raising rails are pivoted outwardly out of the way of the pile table while being lowered into their new working position after having completed a pile raising operation. The pile raising device include columns 3 on which sockets 4 slide, the latter being operated by endless chain 6. The sockets 4 are provided with dowel pins 12 on which are pivoted the arms of depending U-shaped supporting rails 13 for the pile table 14 on which a stack of sheets 16 is supported. The stack 16 is raised upward until the table 14 encounters supporting pawls 17 when electric switch 18 reverses the drive of the chains 6 to return the rails 13 downwardly at increased speed. In order to clear a new stack 19 placed on the platform 20 the U-shaped rails are swung outwardly by the action of rollers 23 on guide 22 having pivoted portions 25 at their upper ends which give way to allow free passage of the rails upwardly but which engage the rollers 23 when the rails are moved downwardly. Operation of the switch 18 also causes energization of an electromagnet 34 which through links 33, 30 moves a front stop 22 from the position shown in full lines in Fig. 2 to that shown in broken iines so that free passage of the supporting rails is possible. As the rollers 23 run off the bottom end of the guides 22 the rails 13 fall under the table supporting the new stack. At the same time one of the sockets 4 encounters a further switch 27 which reverses the drive to the chain 6 and de-energizes the electromagnet 34 so that the front stop 32 may be returned to its working position by the action of the rails 13 on a lever 137 connected through gear segments 38, 39 and link 31 to the stop 32. The new pile is raised until its upper surface contacts the under surface of the nearly used-up pile when the pressure is relieved on the switch 18 and the normal pile raising mechanism is brought back into action.
Patent GB-198446-A (GB)
Title: Improvements in machines for centrifugally separating solids from liquids
IPC: B04B1/14
Filed: 1922-03-07
Abstract: 198,446. Johnston, G. March 7, 1922. Density separators; discharging.-A centrifugal machine for the separation of solids from liquids has a drum casing A within which is a helix B rotating at a different speed from that of the drum to convey the solid contents to the apertures C. Circular facing D formed on the casing A at the apertures C support cylindrical guides E within which are cylindrical casings G with conical outer ends. A spider H at each aperture C supports a valve member J which coacts with the seating K and normally closes the nozzle M opening from the casing G. A flexible annular diaphragm L connects the casing G to the spider H to prevent the escape of the solids. A muff T is connected by links U to one end of a lever V on a pivot W and carrying an adjustable weight Y at the other end. The weight normally holds the casing G in its innermost position. The solids are passed along by the helix B to the apertures C and are then thrown by centrifugal force into the casings G, of which any number may be employed. These rotate with the casing A and when a casing G is sufficiently packed it is moved outwards by centrifugal force against the tendency of the weight to keep it back. This action clears the opening M and the solids are discharged into the circular casing 0 which is kept clear by scrapers R attached to a ring S and rotating with the casing A. The solids are then discharged through the opening P. The centrifugal force on the weight then returns the casing to its normal position.
Patent GB-1022885-A (GB)
Title: Improvements to data registering and processing systems
IPC: H04L12/54
Filed: 1964-02-18
Abstract: 1,022,885. Data transmission. STANDARD TELEPHONES & CABLES Ltd. Feb. 18, 1964 [Feb. 21, 1963], No. 6703/64. Heading H4P. In a data processor associated with a number of incoming and outgoing circuits there is provided a magnetic tape loop general memory comprising message sections which are sequentially and cyclically accessible to reading and recording means, a waiting memory in which are stored, in accordance with the order in which the transducers have access to the general memory sections, the requests for access to or transmission from the general memory, and a programme memory. Each incoming message is preceded by start of message symbols which are recognized, whereby a tape access request is generated and stored, this request including a tape section address which is the address of the first free section-the free addresses are stored in a core matrix address memory. As each tape section appears under the writing head, the address of the section is compared with the requests and addresses stored in the waiting file, and equality allows the associated characters (part of a message being received) stored in the incoming line memory to be transferred to that section. The remainder of the message will be associated with the same address. Transmission from the tape to an outgoing line (selected by means not described) takes place in an analogous manner.
Patent GB-466974-A (GB)
Title: Improvements in holders for tubular electric lamps
IPC: F21V19/00
Filed: 1936-03-05
Abstract: 466,974. Two-part couplings. CLAYTON, A. J. March 5, 1936, No. 6716. [Class 38 (i)] A holder for one end of a tubular lamp provided with a nipple 14 consists of a box 1 shaped at the top edges to receive the lamp cap 4 and grooved at the bottom to take the supply cable. A hollow terminal post 7 is mounted in the base by means of a nut 13 and supports a blade 12 and a spring clip 11. The lamp is assembled by first inserting the nipple 14 in one end of the box and then sliding the lamp axially to force the nipple into the clip. The clip and blade are spaced by a sleeve 10 and the supply lead is threaded up the post and secured by a clamping screw at 8.
Patent GB-276257-A (GB)
Title: Improvements in or relating to mouth gags
IPC: A61B1/24
Filed: 1927-03-10
Abstract: 276,257. Gernert, H. March 10, 1927. Gagging-appliances.-A mouth-gag for use particularly in dental operations consists of two members b, c having grooves d to receive the lips and mounted slidably on a spring blade a. The members b, c are held frictionlly or by means of screws &c. The rear portions of the members b, c project as shown at m in plan view In Fig. 3 to form a protection for the inner surface of the cheeks. Finger-pieces f, g are provided for manipulating the instrument.