baber/WOPTO huggingface dataset:
Patent GB-457531-A (GB)
Title: Improvements in and relating to cathode ray tubes for television transmission, such as iconoscopes
IPC: H01J29/43
Filed: 1935-06-06
Abstract: 457,531. Cathode - ray tubes; television. McGEE, J. D., 9, King's Avenue, Ealing, FREEMAN, G. S. P., 16, Sutton Court Road, Chiswick, and BROWN, W. S., 20, Lexham Gardens, Kensington, all in London. June 6, 1935, No. 16501. [Classes 39 (i) and 40 (iii)] A method of generating picture signals for television transmission employs an iconoscope or like cathode ray tube comprising a mosaic screen and a signal plate, the mosaic screen being provided with a border of conducting material having a capacity to the signal plate greater than the capacity of any mosaic element, and consists in scanning both the mosaic and the border with a beam of electrons. Preferably means are provided for biassing the border relatively to the signal plate. In the iconoscope shown, a mica sheet 7 carries on one side a signal plate 5 and on the other a mosaic of mutually insulated photo-electric elements 6, and a border 8 of conductive material extending completely around the edge of the screen. The border 8 is preferably not photo-electric and may be a coating of metallic paint such as " liquid silver." Alternatively, the border may be an extension of the silver mosaic layer which is either screened during the subsequent oxidation and treatment with caesium, or, if unscreened, is subsequently treated with an intense beam of radiation or electrons to destroy the photo-electric coating. Masks, in the form of apertured sheets or edge flaps, may be hinged to the mica sheet 7 so as to be swung away after manufacture. When the border is scanned it may, owing to its large capacity, assume a potential which is too positive, when it will collect stray electrons and reduce the amplitude of the picture signals. To avoid this the border is biassed through resistance 13 and potentiometer 14, the bias being adjusted so that the amplitude of the signals from the border is just equal to that from the black parts of the picture. The mosaic need not be photo-electric, but may receive an electrostatic image ; a simple sheet of mica may then be used, as described in Specification 442,666.
Patent GB-125882-A (GB)
Title: Improvements in and connected with Attachments for the Protection of Pneumatic and Resilient Tyres and the Prevention of Skidding.
Inventor: GYTON THOMAS HENRY
IPC: B60C27/20
Filed: 1918-10-10
Abstract: 125,882. Gyton, T. H. Oct. 10, 1918. Chain couplings.-A chain 31 for securing a tyre tread has helical spring portions 32 connected to the end links of the chain by pivoted screw-eyes 34 threaded into the ends of the spring.
Patent GB-254731-A (GB)
Title: Improvements in electron discharge apparatus
IPC: H03F3/22
Filed: 1926-07-01
Abstract: 254,731. British Thomson-Houston Co., Ltd., (Assignees of Warner, J. C.). July 1, 1925, [Convention date]. Vacuum tubes.-A valve having a cathode 2, an anode 3, a control grid 4, and a space-charge grid 5, is provided with means, such as a third grid 6, for increasing the impedance of the electron path between the cathode and the spacecharge grid. The energy supplied to the output circuit from the space-charge grid is thereby greatly increased without decreasing the effect of the control grid on the space-charge grid current. The grid 6 is maintained by means of a tapping 12 at a potential lower than that corresponding with the potential gradient at the point at which the grid is mounted. The control grid 4 is mounted adjacent to the anode, and is connected with the input transformer 7. The anode is connected through a part of the primary winding 9 of the output transformer with the high potential source 8, and the space-charge grid 5 is connected to the other part of the primary winding through a resistance 10. As the current variations produced in the circuits of the anode and space-charge grid are opposed, the currents in both parts of the primary combine in their effects upon the secondary 11. The potential of the space-charge grid may be adjusted so that the continuous current fields of the two parts of the winding 9 balance each other. In a modification the output from the space charge grid is used to vary the voltage drop across the resistance 10 by connecting the high potential source 8 to the lower end of the winding 9, instead of to the middle.
Patent GB-1495372-A (GB)
Title: Bistable multivibrator circuit
IPC: H03K3/356
Filed: 1976-04-23
Abstract: 1495372 Transistor bi-stable circuits NCR CORP 23 April 1976 [9 May 1975] 16606/76 Heading H3T A bi-stable multivibrator circuit comprises: first and second gates 22, 70 in the cross coupling paths; first and second stores 40, 84; and third and fourth gates 20, 68 in the input circuits, the circuit being such that during a first timing period gates 20, 68 are enabled to charge stores 40, 84 from inputs at D, C and during a second timing period gates 22, 70 are enabled to discharge the stores and set the bistable to a state depending on the relative values of C and D. As described the signal at C is a reference signal and both signals C and D are pulsed.
Patent GB-1184338-A (GB)
Title: Welded Joints
IPC: B21D51/24
Filed: 1967-04-11
Abstract: 1,184,338. Welding by fusion. MITSUBISHI JUKOGYO K.K. 11 April, 1967 [12 April. 1966], No. 16636/67. Heading B3R. A method of forming a welded joint between component parts 1 of a pressure vessel comprises providing opposed groove faces on the parts to be welded, applying to both faces a built up cladding layer 2 of metal resistant to hydrogen embrittlement and to hardening by the heat of welding, annealing the separate parts, welding them together with weld metal 3 at the root, i.e. inner portion this metal 3 being the same as in the built-up layer 2 and finally completing the weld with metal 4 resistant to hardening by the heat of welding. Annealing of the pressure vessel as a whole is obviated. Where the pressure vessel (Fig. 2, not shown) is of the multilayer wall type the built-up weld layer which is resistant to hydrogen embrittlement may be limited to the inner cylinder and a built up layer may or may not be applied to the outer portions of the vessel wall the metal of which is the same as that used in the outer wall portions. Suitable weld metals resistant to hydrogen embrittlement and to hardening are austenitic or high chrome stainless steels while a suitable weld metal not hardened by welding is a low alloy molybdenum steel.
Patent GB-992218-A (GB)
IPC: F25D21/14
Filed: 1964-04-22
Abstract: 992,218. Refrigerators. LICENTIA PATENT-VERWALTUNGS-G.m.b.H. April 22. 1964 [April 22, 1963], No. 16681/64. Heading F4H. A pivoted flap 2 mounted at the rear of a drip tray 1 serves to control the flow of air from a freezer compartment above the tray to a storage compartment beneath the tray, the position of the flap being adjustable by means of a lever 3 which is pivoted at 4 to the underside of the tray. A pin 6 formed integrally with the flap 2 is received in an inclined slot 5 in the rear end of the lever 3, one wall of the slot being inclined at 14 to prevent the pin from jamming when in its inclined position. The lever is spaced from the underside of the tray by projections 11, 12 and 13 formed in the tray and movement of the front end lever is limited by a slot and pin arrangement 7, 8. The front end of the lever has a flange 9 which is provided with a scale to give a visual indication of the position of flap 2.
Patent GB-760848-A (GB)
Title: An improved method and means for producing crimped yarns
IPC: D02G1/02
Filed: 1954-06-08
Abstract: 760,848. Crimping yarns ; twist tubes &c. driving arrangements. SCRAGG, Ltd., S. & E. and SCRAGG, F. June 8, 1955 [June 8, 1954], No. 16688/54. Classes 120 (2) and 120 (3). Synthetic yarn is continuously crimped in a single operation comprising falsetwisting and heat-setting, as it is drawn from one package and wound on to another package, by passage through the inside of a tubular rotating spindle and a lateral passage in a heated head on the spindle or in a heated member carried thereby. As shown, yarn A is drawn from a package B, passes up the centre of a spindle C rotated at high speed by a belt D engaging a pulley E, emerges from a hole G provided in metal members J in a head F, and is passed to take-up mechanism comprising drawing rollers O, O<SP>1</SP>, guide rail Q, traversing guide R, and roller P driving both the drawing rollers and the package H. The members J may be of soft iron or copper and heated by high frequency induction of eddy currents therein, or by eddy currents induced by their rotation in a magnetic field as may be produced by permanent magnets L or electromagnets (not shown) mounted on a ring K.
Patent GB-269367-A (GB)
Title: Improvements relating to laminated leaf springs
IPC: F16F1/26
Filed: 1926-07-05
Abstract: 269,367. Julien, J. D. July 5, 1926. Laminated sprigs.-Clips for retaining the leaves in place laterally are secured by bolts to lugs integral with one of the leaves and projecting upwardly or downwardly. In the construction shown in Figs. 1 and 4, depending lugs 6 are drilled to receive a bolt 3 which secures the clip 2 in position. The clip may enter recesses in the sides of the lug to prevent it from rotating about the axis of the bolt. A tubular distance piece may be placed on the bolt between the lugs. A single lug may extend right across the spring. Separate bolts may be used in connection with each lug. The lugs and clips may be extended to carry two bolts to prevent rotation, these bolts being disposed one above the other or side by side as shown in Fig. 9. In the modification shown in Fig. 10, the lug is formed by bending down the end of a leaf and the clip 2 is bolted to this end. The clip may be formed as shown of bent bar metal or may be built up from side plates, bolts and distance pieces.
Patent GB-314660-A (GB)
Title: Improvements in and relating to sound reproducing instruments
IPC: G11B31/00
Filed: 1928-06-11
Abstract: 314,660. British Thomson-Houston Co., Ltd., Young, A. P., and Butcher, J. H. June 11, 1928. Receiving-sets, construction of.-A sectional cabinet for a sound-reproducing instrument comprises valve amplifying-apparatus in one section C, and a gramophone of the electric pick-up type in another section B, the electrical connections being automatically made by fitting the sections together. A loud-speaker 1 is mounted in a hinged lid A. The valve amplifiers in the section C preferably form part of a wireless receiving- set. A plug 4 for connection to the mains is connected to terminals 5, 6 which supply the battery eliminator for the valve set. The terminals 5, 6 also supply the gramophone motor 2 in the casing B through sockets 7, 8 and plugs 9, 10. The gramophone pick-up 3 is connected through plugs 15, 16 and sockets 13, 14 to the input terminals 11, 12 of the valve set. The valve output terminals 18, 19 are connected to sockets 20, 21 in alignment with plugs 22, 23 on the section B, which are wired to the hinges 24, 25 forming a pivot for the lid A and an electrical connection for the loud-speaker 1. When the gramophone is not required, the section B is removed and the lid A is attached to hinges 28, 29 on the lowest section, which are wired to the terminals 18, 19. The sides of the casings may be of wood, or of ornamented or veneered moulded material, and conductors may be embedded or moulded in the walls. Specification 289,195 is referred to.
Patent GB-441251-A (GB)
Title: Improvements in and relating to holders for tools in, for instance, metal working and other machines
IPC: B21D28/34
Filed: 1935-06-12
Abstract: 441,251. Chucks and punch holders. FORD MOTOR CO., Ltd., 88, Regent Street, London. June 12, 1935, No. 16911. Convention date, June 12, 1934. [Classes 83 (iii) and 83 (iv)] A punch 12, drill, reamer, &c. is secured by a hardened steel removable insert, comprising a block 13 and wedge member, secured to a fixture block. The punch 12 is held by the wedge action of a roller 16 pressed by a spring 17 in a passage formed between an inclined face on the punch shank and an inclined face on a hardened member 13 secured to a carrier 10. The tool is released by the insertion of a rod 22.
Patent GB-624811-A (GB)
Title: Improvements in percussion fuzes for ammunition projectiles
IPC: F42C9/16
Filed: 1947-06-26
Abstract: 624,811. Projectile fuzes. BREVETS AEROMECANIQUES SOC: ANON. June 26, 1947, No. 16916. Convention date, July 11, 1945. [Class 9 (i)] A percussion fuze of the kind in which a percussion head 14 is disposed in front of the striker 15 is characterised in that means are provided to resist the backward movement of the head 14 and that the movement of the striker is controlled by a selfdestruction device including a centrifugal element 26 which engages with a ramp 32 to retard temporarily the displacement of the striker by the means actuating it for selfdestruction. In the construction shown, a spring-urged sleeve 24 bears against a flange 28 of the striker 15 and the flange bears against two weights 23 which are located in a housing 22 of an outer sleeve 17. When the projectile is in flight, centrifugal force serves (a) to open a ring 19 thereby permitting forward movement of the sleeve 17, (b) to drive outwards the two weights 23 thus, by surfaces 29, to cause the weights to move the sleeve 17 forwards, and (c) to open out a split ring 26 so that it bears against the ramp 32 of sleeve 17. The weights are now clear of the flange 28, but the firing pin is not driven towards the detonator 33 until impact occurs, or until centrifugal force drops sufficiently to enable the spring to overcome the holding force of the ring 26. On impact, the disc 13 is broken and the head 14 is sheared by the shoulder 34 and is driven in to act upon the striker 15. In modifications, Figs. 2 and 3 (not shown), a Range on the stem of the head 14 is, in one case, the part which is sheared, and in the other case it is a pin which projects through a slot in the stem. Specification 605,683 is referred to.
Patent GB-1357191-A (GB)
Title: Sliding gate nozzles
IPC: B22D41/24
Filed: 1971-05-25
Abstract: 1357191 Slide valves for metallurgical ladles STOPINC AG 25 May 1971 [25 May 1970] 16954/71 Heading F4B A sliding gate nozzle for a bottom-pour ladle comprises a frame 4 attached to the ladle shell 1 having a nozzle box 5 hinged thereto at 6, a nozzle plate 11 grouted with mortar in an insertion frame 13 disposed centrally of the nozzle box, a sliding gate 12 located in a support body 14, a felt ring 26, Fig. 7, disposed between the orifice brick 3 and the nozzle plate 11 and a copper asbestos seal 27 disposed between the nozzle box 5 and the ladle shell 1. Slotted pins (8, Fig. 4) on the frame 4 engage lugs (10) on the nozzle box 5 and keys (9, Fig. 3) driven into the slots hold the frame and nozzle box together. The insertion frame 13 is attached to the nozzle box by screws 25. A cover 18 is drawn tight against the nozzle box by swing bolts (21, Fig. 2) carrying dish springs (22). The working parts of the valve, being assembled within the nozzle box 5 are easily replaced by knocking out the keys (9), removing said box from its hinges 6 and replacing it by another in which the said working parts are pre-assembled.
Patent GB-1437776-A (GB)
Title: Cyanourea derivative having biocidal activity
IPC: C07C239/00
Filed: 1975-04-24
Abstract: 1437776 Urea derivative STAUFFER CHEMICAL CO 24 April 1975 [3 May 1974] 17004/75 Heading C2C The invention comprises 1-m-trifluoromethylphenyl - 3 - (3<SP>1</SP>,5<SP>1</SP> - dicyanophenyl)urea. It is prepared by reacting m-trifluoromethyl phenyl isocyanate with 3,5-dicyano aniline. Steps in the process are the preparation of 5-nitro isophthaloyl chloride by reacting 5-nitro isophthalic acid with thionyl chloride which is then converted to 5-nitro isophthalamide by reacting with ammonium hydroxide and by reaction with phosphorous pentachloride and pyridine into 5-nitro-isophthalonitrile which by reaction with HCl and iron powder produces 3,5- dicyano aniline which is reacted with mtrifluoromethylphenyl isocyanate.
Patent GB-1101997-A (GB)
Title: Clamping device
IPC: B23Q1/28
Filed: 1965-04-22
Abstract: 1,101,997. Machine tool details; grinding. K. M€GERLE. 22 April, 1965 [25 April, 1964], No. 17035/65. Headings B3B and B3D. [Also in Division E2] A clamping device for clamping the work table or tool carrier of a machine tool comprises a part to be clamped provided on the table or carrier and a clamping part on the frame, one of the parts in the clamping position of the device being moved towards the other part or elastically distorted in a direction towards the other part by a wedge member moved hydraulioally, the part to be clamped having serrations which co-operate with and, when the parts are unclamped move along, a serrated surface of the clamping part. A work-table has guideways which engage two strips on a bed of a grinding machine. Supports 29, 31 with serrated upper surfaces 39, 41 on strips 35, 37 screwed to the machine bed are engaged by the tapered clamping face 65 of piston 63 of a pair of hydraulic clamping cylinders 61 bolted to column 33 on the supports 29, 31. Operating the cylinders lowers serrated surfaces 43, 45 on strips 47, 49 on the column into clamping engagement with the serrated surfaces 39, 41 on the supports. Reversing the direction of oil flow releases the clamps and the work table is traversed hydraulically to a second position where it is automatically clamped. Alternatively an L-shaped member having an elastic limb which contacts the underside of strip 35 is screwed to the column 33 and is clamped to the strip by operating an hydraulic cylinder the piston of which is connected by a lever to an eccentric pin in the wedge member which engages the elastic limb. A grinding wheel head has strips with serrated surfaces which contact serrated surfaces on strips on the column 33. One strip is L-shaped and a tapered wedge member connected to an hydraulic cylinder clamps one limb of the strip and thereby clamps the wheel head to the column. Release of the clamps is effected automatically and the wheel head is automatically lowered or raised by rotating a spindle, the clamps are then operated again.
Patent GB-1069323-A (GB)
Title: Clamping device
Inventor: PARKIN LESLIE
IPC: F16B5/06
Filed: 1964-04-24
Abstract: 1,069,323. Clamps. CARR FASTENER CO. Ltd. March 12, 1965 [April 24, 1964], No. 17121/64. Heading E2B. A clamping device comprises a hollow body having an open front and a clamping plate 7 slidably mounted in the body by lugs 8 of the plate engaging in slots 5 in opposed side walls 1, 2 of the body, the clamping plate being formed with an aperture 10 in which is threadedly engaged a screwthreaded stud 11, the slots 5 being formed with recesses 6 so that when the lugs 8 enter the recesses the lugs to facilitate insertion of a member 12 to be clamped into the open end of the body under the clamping plate so as to be clamped thereby when the plate is moved into its clamping position by rotation of the screwthread stud 11. As described the device is used to secure together two parts of an article of furniture. The device is mounted on one of the parts by means of apertured lugs 1a, 2a and the lugs 8 are engaged in the recesses 6 near the ends of the slots 5. The plate 7 is tilted and a platelike portion 14 integral with a base 12 mounted on the other part of the article of furniture is inserted into the body beneath the plate. The plate is moved forwardly by sliding the lugs 8 along the slots 5. A screw driver is inserted via a hole 4a in the top wall 4 of the body and is used to rotate the screw threaded stud 11 so that its head engages with the wall 4 and the plate 7 bears on the portion 14 to clamp it. A plurality of the clamping devices may be used in combination to hold together the parts of a piece of furniture.
Patent GB-612907-A (GB)
Title: Improvements in or relating to drying cylinders for paper making machines
IPC: D21F5/02
Filed: 1946-06-06
Abstract: 612,907. Hollow rollers. BERTRAM & SON, Ltd., J., GRAY, G. F., BALFOUR & CO., Ltd., H., and BURNS, L. June 6, 1946, No. 17145. [Class 34(i)] A hollow roller comprises a shell 1 rolled and welded at the seam, end plates 2 welded to the ends of the shell, and a tubular shaft 3 penetrating and welded to the end plates. The end portions of the shaft acting as journals 4 may be fitted with removable sleeves 5. A collar 6 presenting a shoulder 7 may be incorporated, and perforations 8 may be provided in the tubular shaft for admitting steam. Condensate is withdrawn by a water lifter, not shown, via ports 10 in the shaft 3. A water baffle 9 is provided within the shaft to prevent condensate entering the steam line.
Patent GB-851534-A (GB)
Title: Improvements in collapsible boxes, crates and the like
IPC: B65D6/00
Filed: 1957-05-30
Abstract: 851,534. Collapsible boxes. HOLMES, W. May 29, 1958 [May 30, 1957], No. 17147/57. Class 18. A knock-down box has sides 3, 5 and ends 4, 6 all hinged to the bottom member 1 which is provided with a groove 7 close to its outer periphery to receive the lower edges of the sides and ends, the top 2 also being provided with a corresponding groove to receive the upper edges of members 3, 4, 5, 6 and the ends 4, 6 provided with grooves to receive the end edges of sides 3, 5. The sides 3, 5 and ends 4, 6 are attached to the bottom 1 by hinges 8 and strips 9 respectively, the strips being made of flexible material to enable ends 4, 6 to be folded flat on sides 3, 5. The grooves to receive the ends of the sides 3, 5 are formed by parallel strips 10, 11 of wood or metal. Short bolts 12 are mounted on bottom 1 to enable the top 2 and the bottom 1 to be secured together when the box is collapsed and when it is erected they are held together by long bolts 15 hinged to the bottom by eye-pieces 15a and slidably held against the box by U-brackets 16. An angle-piece 18, with a pin (not shown) to pass through aperture 19, is provided as a temporary fastening device if the box is used without the top 2. Strengthening battens may be fitted to the sides and ends and the top and bottom may be reinforced round the edges by a metal frame and the groove 7 formed by metal strips. Off-set hinges may be used instead of flexible-strips 9. In a modification, Fig. 10, an angle-shaped frame 20 provides an upstanding flange 25 around the bottom 1 and top 2. Instead of bolts 12 the top is provided with tongues 26 at one end to engage apertures 27 in flange 25 while spacing members 28 are provided on the sides and other end to rest on marginal strips 21. One of the members 28 may be provided with a spring-loaded sliding bolt for locking top and bottom together. Specifications 733,331 and 784,649 are referred to.
Patent GB-1191382-A (GB)
Title: Improvements in or relating to Brake Boosters.
IPC: B60T13/573
Filed: 1968-04-10
Abstract: 1,191,382. Fluid pressure brake systems. ALFRED TEVES G.m.b.H. 10 April, 1968 [26 July, 1967], No. 17250/68. Heading F2F. In a brake booster having a working piston 1 formed with a control bore for a valve piston 2 a resiliently yielding member, such as a compression spring 12, Fig. 3, or a rubber ram 16, Fig. 4, is disposed between the valve piston and the piston-rod 4 and the arrangement is such that the portion of the braking force transmitted from the push rod 5 by the valve piston directly to the piston-rod 4 is distributed uniformly over the valve piston area 10 occupying the whole cross-sectional area of the bore. In Fig. 3, the valve piston 2 comprises two piston members 11, 13 having annular grooves 21, 20 respectively for locating the spring 12, movement apart of the piston members being limited by nut 15 and stop 18. The central bore of member 13 is closed by a disc 14 whereby the portion of the braking force transmitted through the valve piston is uniformly distributed over the whole cross-sectional area of the bore in which member 13 is disposed. In Fig. 4, a rubber ram 16 is arranged so that its maximum compression is reached as the valve piston area 10 comes into contact with the reaction disc 3 so that the reaction disc and the rubber ram then co-operate to form a unit over which the portion of the braking force transmitted through the valve piston is uniformly distributed over its whole cross-sectional area.