baber/WOPTO huggingface dataset:
Patent GB-366490-A (GB)
Title: Improvements in or relating to electric switchgear
IPC: H01H3/40
Filed: 1930-11-03
Abstract: 366,490. Switchgear structures. GENERAL ELECTRIC CO., Ltd., Magnet House, Kingsway, London, and KEELEY, F. J., Hillmuir, Chester Road, Streetly, Birmingham. Nov. 3, 1930, No. 33053. [Class 38 (v).] Oil switches; electric-motor actuation.-Oil switches of the kind that are withdrawable for isolation purposes from the fixed part of the switchgear structure, are provided with means whereby they may be operated from the fixed part even in the withdrawn position. An insulating rod 9 carrying main and arcing contacts 10, 12 is raised and lowered by means of an electric-motor driven shaft 16 on the fixed part of the gear, which in turn drives spindles 20 through gearing 18, 19. The shafts 20 are splined at 24 for engagement with splines 33 in fittings 32 in which are threaded hollow spindles 26 adapted to receive the spindles 20. The spindles 26 are mounted in ball bearings 30, 37, of which 30 are mounted on flanges 29 in housings 28 which are flanged at 34 to support tubular members 35, the lower ends of which support the bearings 37. The enlarged ends 40 of the spindles 26 are formed with quickpitch threads to co-operate with nuts 44 having radial projections 46 embraced by the forked ends of the bar 9, the said forked ends passing through holes in a further pair of radial projections 45. When the switch is lowered (by means not shown) so that the cover 1 is in the dotted position, the spindles 20 and fittings 32 are still in engagement so that the switch can be operated, but interlocks with the driving- motor circuit prevent operation except in the service or withdrawn positions. The switch can be lowered further for complete removal. A resilient stop 41 is provided on each spindle 26 and the invention is also applicable to horizontally-movable switches.
Patent GB-466504-A (GB)
Title: Improvements in or relating to the synthesis of esters of methacrylic acid
IPC: C07C69/54
Filed: 1935-11-28
Abstract: Methyl methacrylate is manufactured by converting acetone cyanhydrin into a -hydroxyisobutyric acid by hydrolysis, converting the acid into its methyl ester by treating its alkali metal (e.g. sodium or potassium) salt with a methylating agent, and treating the ester with a dehydrating agent.  In an example, crude acetone cyanhydrin is hydrolyzed by means of hydrochloric acid, the a -hydroxyisobutyric acid is neutralized with caustic soda, the sodium salt is suspended in acetone and treated with dimethyl sulphate, and the resulting methyl ester is treated with phosphorus pentoxide in the presence of hydroquinone. Specifications 300,040, [Class 2 (iii)], 359,262, 395,687, 410,208, and 416,007 are referred to.
Patent GB-323047-A (GB)
Title: Moulding compositions and artificial masses
IPC: C08G12/46
Filed: 1928-09-20
Abstract: 323,047. Ripper, K. Sept. 21, 1927, [Convention date]. Divided on 297,433. Condensation products of formaldehyde with dicyandiamide and a protein.-Condensation products which can be moulded by heat and/or pressure are obtained by reacting formaldehyde with dicyandiamide and a protein, particularly casein. For example, casein may be added to a dicyandiamide-formaldehyde condensation mixture, or to a dicyandiamide-formaldehyde condensation product still containing free formaldehyde, and the resulting condensation product may be dried and ground for use as a moulding powder. Alternatively, dicyandiamide may be mixed with a casein paste which is then shaped and treated with formaldehyde, or a casein paste may be treated simultaneously with dicyandiamide and a solid polymer of formaldehyde, the mixture being shaped by pressure, with or without heat. The reactions may be accelerated by the use of acid or alkaline catalysts, and the compositions may include fibrous or other fillers, dyes &c. Specification 287,177 is referred to.
Patent GB-210923-A (GB)
Title: Improvements relating to engine governors
IPC: G05D13/00
Filed: 1922-12-05
Abstract: 210,923. Stubbs, A., and Metropolitan- Vickers Electrical Co., Ltd. Dec. 5, 1922. Electric governors. - The governor comprises two parts, an annular magnetic core 3 secured to the shaft and having primary windings 4 carrying an alternating current from rings 5 and conductors 6, and a freely mounted magnetizable core 8 with secondary windings 9. The windings are wound to form definite magnetic poles when traversed by an electric current. The parts 3, 8 normally run at the same speed. A variation in the speed of the shaft 2 causes a relative displacement of the parts and a change in the inductance and an increase in the current in the primary coil. An electric relay supplied thereby operates the engine valve. In the construction, Fig. 3, a second device 16 similar to the governor 10 is provided with primary and secondary stationary windings 17, 18. When the speed remains constant, the inductance in the coils 11. 17 remains the same, and the currents in the opposing coils are equal. A change of speed alters the currents and operates the relay. In the construction shown in Fig. 4, two devices 10, 22, one rotatable and one stationary, similar to that shown in Fig. 1 are provided. The windings 11, 24 are connected in parallel, and also the windings 12, 23. The movement of the winding 12 due to a change in speed is transferred to the winding 23 and this through a spindle 26 operates the valves.
Patent GB-621907-A (GB)
Title: Mountings for inverted incandescent mantles
IPC: F23D14/30
Filed: 1946-11-08
Abstract: 621,907. Stud and socket fastenings; bayonet joints. MANTLE LAMP CO. OF AMERICA. Nov: 8, 1946, No. 33283. Convention date, Dec. 17, 1945. [Class 44] [Also in Group XI] A sheet metal mounting (see Group XI) for an incandescent mantle has a frusto-conical upper portion 6 provided with slots 15 which engage with pins 14 projecting inwardly from the inner surface of a burner head 1. Each slot has an inclined portion 17 which serves to raise the mantle mounting and an axial portion 16 which is closed at its upper end. The tapered formation of the portion 6 permits the entry of the pins 14 into the axial portion 16. In a modification (Fig. 7) the bayonet slots are replaced by vertical grooves 35 leading down from the upper edge of the frusto-conical portion 32 of the mantle mounting and continuing through the portion 32 to provide slots having inwardly extending spring tongues 36 made from the material displaced to form the slots. These spring tongues 36 press against the upper edges of the inner ends of pins 14 projecting from the burner head 1.
Patent GB-937301-A (GB)
Title: Improvements in or relating to heat exchangers
Inventor: INGHAM CLEMENT
IPC: F28D7/16
Filed: 1958-10-18
Abstract: 937,301. Tubular heat exchangers. W. C. HOLMES & CO. Ltd. Jan. 18, 1960 [Oct. 18, 1958], No. 33340/58. Class 64 (3). Apparatus for heat exchange between two gases comprises a casing 19 containing two parallel tube groups 10, 11, each removable as a unit, the casing having a gas inlet duct 28 which tapers from the inlet end and which is open on one side to the interior of the casing. This arrangement is said to equalize gas pressure over the whole cross-section of the casing. As shown, the tube groups 10, 11 are separated by a hollow, heat-insulating partition 16 below which are provided the inlet and outlet ducts 28, 29 for the gas flowing over the tubes, the ducts being separated by a plate member 25 so disposed that each of the ducts is of tapering form, decreasing towards the centre of the casing. Gas entering through the inlet duct 28 flows over the tube groups 10, 11 in succession before being discharged through the outlet duct 29. The other gas enters a bottom header formed with inlet and outlet ducts, also of tapering form provided by a plate 30, and flows through the tube groups in series by way of intercommunicating headers 36 together forming a return header at the upper end of the tube groups. Each tube group is individually removable from the apparatus after detaching cover plates 13 and 33A and is resiliently mounted in the casing, Figs. 4 and 5 (not shown), being retained in position by its own weight and by weights 38 placed on top of the upper headers 36 without the use of bolts or flange connections.
Patent GB-858905-A (GB)
Title: Improvements in or relating to the anti-fouling treatment of ships' hulls and other structures immersed in water
Inventor: WAITE WILLIAM GODFREY
IPC: B63B59/04
Filed: 1957-10-25
Abstract: 858,905. Preventing incrustation and corrosion. HUGHES & CO. Ltd., F. A. Oct. 30, 1958 [Oct. 25, 1957], No. 33377/57. Class 123(1) Fouling of ships' hulls &c., by marine growths is prevented by discharging streams of air or other gas into the water so that bubbles rise in contact with the metal surface, a suspension of a finely divided metal such as cadmium, zinc, aluminium or magnesium or a metal compound such as an oxide' of copper, mercury or arsenic in an oily carrier liquid such as kerosene or light diesel oil being admixed with the air or gas. The treatment results in the destruction of the marine growths, the surface eventually becoming coated with a thin film of the suspension. The metal particles also provide cathodic protection against corrosion of the immersed structures, particularly when these are of steel. Specification 858,904 is referred to.
Patent GB-462018-A (GB)
Title: Improvements in or relating to photographic cameras
IPC: G03B19/04
Filed: 1935-08-23
Abstract: 462,018. Photographic roll - film cameras. BAKER, W. E. W., and RUSHTON, R. H. Aug. 23, 1935, No. 33422/36. Divided out of 461,968. [Class 98 (i)] A focal plane shutter camera comprises a sliding shutter-setting member, feed mechanism for advancing a film past the gate of the camera, and a single manually-operated knob connected both to the shutter-setting member and to the feed-mechanism so that the film is automatically advanced when the shutter is set. The apparatus is primarily intended for use with the shutter mechanism described in Specification 461,968. A knob 103, Fig. 13, moves a bar 99 provided with a dog 100 which operates the shutter as described in Specification 461,968 and carrying spring-pressed teeth 136 engaging perforations in the film. Rack teeth on the bar 99 rotate the take-up spool through gearing 137, engaging a toothed sector 138 which turns the spools through a ratchet 144. The ratchet and spring- pressed teeth 136 permit the return of the bar 99 when the shutter is operated without moving the film. The toothed section also carries a cam 149 co-operating with a curved link 150 pivoted at 181. The other end of the link is pivoted at 152 to a lever 153 which operates a counting mechanism showing numerals through a window in the camera casing. To obtain a record of each exposure a strip of paper 157 is interwound with the film and passes under a guide 155 past a window through which a pencil record may be made. Specification 462,020 also is referred to.
Patent GB-201839-A (GB)
Title: Device for automatic removal of saliva from patients' mouths under dental treatment
IPC: A61C17/08
Filed: 1922-12-08
Abstract: 201,839. Rosthoj, J. P. A. Dec. 8, 1922. Liquid-withdrawing apparatus.-A device for removing saliva comprises two perforated tubes 2, 3 for the outside and inside of the jaw, a flat or curved tongue plate 1 attached to the inner tube 3, a lip-piece 10 attached to the outer tube and fitted with a square tube 12, and a rectangularly bent rod 6 with a slide 7 and fitting 9 to be applied under the chin.' The bent portion of the rod 6 is fitted in the square tube 12. The tubes 2, 3 are connected through tubes 4 with a discharge pipe 5. The slide 7 may consist of a square tube fitting on a square part of the rod 6. In a similar device for application to the side of the mouth the lip portion is omitted and an additional suction tube is attached parallel with the outer tube so as to keep the cheek away from the jaw.
Patent GB-1499016-A (GB)
Title: Lightning protector
IPC: H02H9/06
Filed: 1975-08-13
Abstract: 1499016 Lighting arresters BUCKBEEMEARS CO 13 Aug 1975 [17 March 1975] 33650/75 Headings H2H A lightning arrester for an electrical signal line 10 coupled to a load 12 comprises a gas-filled discharge tube 13 having at least three electrodes 4, 16, 17, electrode 14 being for connection to line 10 and electrode 16 being grounded, and a step-up transformer 19 having one end of its primary connected to electrode 14, one end of its secondary connected to electrode 17 and the other ends of its primary and secondary connected together to a reference potential. Thus when a surge appears on line 10 which is sufficient to damage the load 12 but is insufficient to ignite tube 13 via electrode 14, the transformer steps-up the voltage across its primary to a level sufficient to ignite the tube 13 via electrode 17. As shown, a similar arrangement of electrodes 15, 18 and a transformer 20 is provided for a second line 11, although a single line device may be protected, Fig. 2 (not shown). Zener diodes 41-44 provide the reference potential as shown.
Patent GB-1210395-A (GB)
Title: Motor vehicle braking apparatus
IPC: F16D65/28
Filed: 1967-11-09
Abstract: 1,210,395. Fluid pressure brakes. ROYAL INDUSTRIES Inc. 9 Nov., 1967 [14 Nov., 1966], No. 33840/69. Divided out of 1,210,394. Heading F2F. The description is identical with that of Specification 1,210,394 and the claims are directed to the compressed-air braking system disclosed in Figs. 9 and 10.
Patent GB-424184-A (GB)
Title: Improvements in or relating to apparatus for controlling the operation of marine diesel engines
IPC: F01L13/02
Filed: 1934-11-26
Abstract: 424,184. Starting. SULZER FRERES SOC. ANON., Winterthur, Switzerland. Nov. 26, 1934, No. 33956. Convention date, Dec. 6, 1933. [Class 7 (v)] In an arrangement for controlling the operation of a marine Diesel engine, the fuel and starting-air supplies are controlled by a common member f, so that the engine can be set to operate either on compressed air or fuel, but the supply of starting air can be controlled independently of the fuel supply in order to supplement the charge by compressed air without interfering with the setting of the fuel control. As shown, the rod e of the starting-air valve carries a tappet roller c movable into or out of the range of forward and reverse starting cams a, b by means of a lever h, which is normally coupled by a catch k to the lever f. In the " stopping " and " starting " positions St, A of the lever f, the suction valve of the fuel pump is held open. In the " normal running" position B, the suction valve is released and the roller c is out of the range of the cams a, b, but can be brought into the operative position by means of the lever h upon releasing the catch k.
Patent GB-1512455-A (GB)
Title: Process for hardening photographic layers
IPC: C07C267/00
Filed: 1975-08-15
Abstract: 1512455 Carbodiimidoalkyl sulphobetaines AGFA-GEVAERT AG 15 Aug 1975 [17 Aug 1974] 34047/75 Heading C2C [Also in Division G2] Carbodiimides containing a sulphobetaine group, have the formula wherein R 1  represents C 1-6  alkyl, cycloalkyl or alkoxy alkyl; R 2  represents C 2-4  alkylene; R 3  represents C 1-3  alkyl and R 4  repre sents C 1-3  alkyl or aryl or R 3  and R# together with the adjoining N represent a 6-membered heterocyclic ring which, in addition to the N, may also contain at least one further hetero atom; and R 5  represents C 1-5  alkylene, and may be prepared by reacting a carbodiimide of formula with a sultene or haloalkyl sulphenic acid.
Patent GB-1505838-A (GB)
Title: Pulse radar apparatus
IPC: G01S7/292
Filed: 1975-10-31
Abstract: 1505838 Pulse radar DECCA Ltd 31 Oct 1975 [ 1 Aug 1974] 34066/74 Heading H4D A pulse radar system in which objects are displayed on a C.R.T. at brightnesses dependent on their extent in azimuth, comprises a scanning aerial 12 having a non-zero width lobe whereby a point target is illuminated by a set number P of pulses, and, for each range cell, means 26, 27, 28 determining the number M of echoes in N successive p.r.p's when N>P and grouping the echoes into at least three sets according to the value of the ratio M/N, at least one of the sets being then displayed with a distinctive brightness. By this means noise and sea echoes giving a low value of M/N can be blanked or displayed as grey, point targets such as ships giving a medium value are displayed as white and extended objects, e.g. coast line, giving a high value are displayed as grey. Video staticizer 27 holds a running set of N = 16 consecutive same range cell samples, the video signal having been digitized at 26. Compressor 28 performs the logic on the ratio M/N and determines the display brightness. A log receiver 18 increases the signal/noise ratio. The final display 35 is made true motion by a ground stabilizer input 32. The digitized video is monitored in B-scope format at 29.
Patent GB-428673-A (GB)
Title: Improvements in and relating to skips, tubs and the like, used in connection with hoisting devices
IPC: B66C1/66
Filed: 1934-11-27
Abstract: 428,673. Tip-buckets. DOWLING, J. H., 27, Terenure Road, Dublin. Nov. 27, 1934, No. 34105. Convention date, March 8. [Class 78 (iv)] The bail of a tip-bucket resting on the ground cannot be swung from the vertical position without first being moved vertically upwards. Fig. 2 shows one arrangement in which the elongated slots C allow the bail to fall by gravity relatively to the trunnions D and so bring inwardly-projecting spurs E into register with projections F on the bucket, which may be arranged as shown or at the top of the rim. In one modification the projections F are below the trunnions and the spurs E project downwardly from the ends of the bail. In a further modification the downward movement of the bail brings a projection E, Fig. 5, into contact with the usual locking-catch H on the bucket, thus preventing withdrawal of the latter. The trunnions may be fitted on the bail and the elongated slots in the wall of the bucket. The locking-appliances may be fitted to one end only or to both ends of the bail.
Patent GB-1149392-A (GB)
Title: Process for the catalytic epoxidation of olefinic compounds
IPC: B01J37/04
Filed: 1966-07-29
Abstract: 1,149,392. Epoxidation of olefinic compounds. CHEMISCHE WERKE HLS A.G. 29 July, 1966, No. 34171/66. Heading C2C. [Also in Division B1] Olefins are epoxidized by reacting with an organic hydroperoxide in the presence of a catalyst comprising (a) a compound of a metal of Groups IVA, VA or VIA of the Periodic System; and (b) a compound of a metal of Groups VIIA or VIII of the Periodic System. The preferred components (a) are compounds of vanadium, molybdenum, tungsten, titanium, zirconium or tantalum and the preferred components (b) are compounds of manganese, iron, cobalt or nickel. If desired the catalyst may be a single compound containing metals from both classes e.g. cobalt molybdate and nickel tungstate. The process may be used for the epoxidation of substituted olefins e.g. allyl alcohol, methallyl alcohol, rhodinol, geraniol, oleyl alcohol, 4-chlorocyclohexene-(1), 4-cyanocyclohexene-(1), oleic acid, ethyl linolenate, unsaturated fats and butadiene sulphone. Suitable organic hydroperoxides are, for example, tertiary-butyl hydroperoxide, cyclohexenyl hydroperoxide, cumene hydroperoxide and the hydroperoxides of cyclohexanol, isopropanol and butanol-(2). Examples are given of the epoxidation of propylene, 2-ethylhexene, cyclohexene, cyclododecatriene - 1,5,9 and diallyl formal.
Patent GB-920486-A (GB)
Title: Rolling element bearings
IPC: F16C33/44
Filed: 1961-09-25
Abstract: 920,486. Bearings. DURKOPP MASCHINENBAU-G.m.b.H. Sept. 25, 1961 [Oct. 17, 1960], No. 34200/61. Class 12 (1). A cage of synthetic resin is injection-moulded around balls, or rollers, while they are in spaced positions between outer and inner races. The balls &c. are coated to prevent attachment to the cage during casting, the thickness of the coating being sufficient to allow for the required clearance of the balls when said coating has been removed. The coating may be applied by dipping &c. and removed by a solvent such as acetone, for example. A mould, used for making the cage, comprises two setting-rings 5, 10 having openings 9 therein which serve to space balls. The rings 5, 10 fit one inside the other and have annularly-shaped internal flanges 8. The flange 8 of the ring 5 has openings 11 through which the resin is injected.
Patent GB-1100529-A (GB)
Title: Inverter
IPC: H02M7/525
Filed: 1966-07-29
Abstract: 1,100,529. Inverting. INTERNATIONAL STANDARD ELECTRIC CORPORATION. 29 July, 1966 [31 July, 1965], No. 34204/66. Heading H2F. [Also in Division H3] In a static inverter 1, comprising semiconductor controlled rectifiers 12 which are controlled by a pulse generator la, the input of the pulse generator is connected to the D.C. input of the inverter for starting and via a rectifier 7 and a transformer 6 to the A.C. output of the inverter for running, when the connection between the pulse generator input and the D.C. input is broken. As shown for starting the input of the pulse generator 1a is fed via a resistor 2 from the D.C. input to the inverter. Then by manual closing of the switch 5, relays 3 and 4 operate causing contact 4/1 to disconnect the D.C. input of the inverter from the input of the pulse generator which is then fed via the rectifier 7 and transformer 6, and contact 3/1 to connect the load to the A.C. output of the inverter. Contact 4/3 holds the inverter self-oscillating until either this circuit connection is broken or the input D.C. is removed. In a modification of the switching arrangement (Fig. 2, not shown), an S.C.R. is connected in series with the D.C. supply of the inverter connected to the input of the pulse generator, such that on starting this S.C.R. conducts but is made non-conducting when the rectified output from the inverter becomes more positive at the cathode of a diode (14) than at the anode of the S.C.R.