baber/WOPTO huggingface dataset:
Patent GB-698455-A (GB)
Title: Interpolymers from vinyl ethers of hydroaromatic alcohols and olefines and a process of producing them
IPC: C08F16/12
Filed: 1952-01-18
Abstract: Interpolymers of vinyl ethers of hydroaromatic alcohols and olefines having more than 4 carbon atoms and an isopropylidene group are made by polymerizing, e.g. in a solvent, a mixture of the monomers at low temperature in the presence of a Friedel-Crafts type of catalyst, preferably added portionwise. Specified olefines are 3-methylbutene-2, 2,3-dimethylbutene - 2, 2,4 - dimethyl - pentene - 3, 2,2,4 - trimethyl - 3 - t - butyl - pentene - 3, 2,6 - dimethyl - 4 - isopropylidene heptane and mixtures.  Ethers mentioned are decahydronaphthyl vinyl ether and vinyl cyclohexyl ether.  The solvent may be liquid propane, propylene, or mixtures.  The catalysts mentioned are aluminium chloride, boron fluoride and their addition products.  The copolymers which are soluble in liquid hydrocarbons and miscible with paraffins may be used in coating compositions.
Patent GB-411956-A (GB)
Title: Improvements in or relating to moulding and vulcanising or the like apparatus
IPC: B29C33/02
Filed: 1933-01-17
Abstract: 411,956. Moulding and vulcanizing rubber. DUNLOP RUBBER CO., Ltd., 32, Osnaburgh Street, London, and NORCROSS, T., Fort Dunlop, Birmingham. Jan. 17, 1933, No. 1517. [Classes 70 and 87 (ii).] Moulding and vulcanizing apparatus comprises at least two fixed abutments spaced to form a gap into which a mould is entered by a lateral movement, with little if any clearance, and an inflatable envelope is provided to submit the mould to pressure in the gap. A pair of pillars 1, 2 have fixed between them a number of members 3 between which are gaps 7 into which can be slid moulds 8<a>, 8<b>. Housed in recesses of the members 3 are inflatable envelopes 5 with overlying plates 6, whereby the moulds may be submitted to pressure when in position. The moulds may be provided with steam chambers as shown, or separate steam chests may be interposed between the moulds and members 3. The envelope may be carried by one of the mould members, heating may be by electricity, and the member 3 may constitute one of the mould halves.
Patent GB-1360575-A (GB)
Title: Solid state relay
IPC: H03K17/795
Filed: 1972-01-12
Abstract: 1360575 Photo-controlled switching circuits HONEYWELL INFORMATION SYSTEMS Inc 12 Jan 1972 [29 March 1971] 1545/72 Heading G1A [Also in Division H3] A switching device 46 is controlled by a photo-transistor 26 and a photo-controlled rectifier 32 connected in series and associated with respective light-sources 24, 30 controlled by an input signal. As shown, the photocontrolled rectifier is provided to isolate the photo-transistor from the high voltage supply when the circuit is in its 'off' stateand the phototransistor switches the controlled rectifier off when the light sources go off. The light sources are controlled by a DTL or TTL gate 10 which, in Fig.1 (not shown) is connected to the lower end of a series resistor to divert current from the light sources. A Zener diode 15 is connected to the gate of the controlled rectifier to protect the photo-transistor during switch off. diode 82 protects the output transistor from back e.m.t. from an inductive load and diode 80 protects against wrong polarity connection of the supply.
Patent GB-927326-A (GB)
Title: Improvements in or relating to the manufacture of corneal lenses
IPC: B24B9/14
Filed: 1962-01-16
Abstract: 927,326. Lathes. LENTILLES OPHTALMIQUES RATIONNELLES S.A. Jan. 16, 1962 [March 20, 1961], No. 1587/62. Class 83 (3). A lathe for finishing the rim of a corneal lens 10 comprises a bed-plate 1, a spindle 3 carrying the lens, a carriage 40 supporting a roughing tool 47 and displaceable parallel to the spindle axis, and a cutting-tool 51 for finishing the rim-profile. The lens is clamped between a rubber &c. cup 8 at the end of the horizontal spindle 3 and a rubber &c. pad 12 at the end of a spindle 13 which is rotatable on a cylinder 14 slidable in a sleeve 15. A handle 16 on the cylinder and passing through a slot 17 in the sleeve 15 retracts the pad 12 for mounting a lens in the end of a centring sleeve 20 when this is projected over the cup 8 from the withdrawn position, in which it is retained by a spring 23. The pad 12 is then engaged against the mounted lens, which is moved with the sleeve 20 and pad 12 until it engages the cup 8, when the sleeve 20 may be completely retracted. The roughcutting tool-assembly is mounted on a plate 27 biased clockwise about a pivot 28 by a spring 30 between the end 32 of the plate and a post 31 on the bed 1. A stop 38 locates the plate 27 in the cutting position of the tool 47, and a cam 34 on a pivot passing through the plate 27 bears on a pin 33 on the plate to withdraw the tool. The tool-carriage 40 is mounted on the plate 27 and biased by a spring (not shown) against the cam 34, so that when the cam is turned in the direction F by a handle 35 the plate 27 moves against stop 38 and the carriage is allowed to move the tool 47 for reducing the lens diameter. Lateral adjustment of the tool 47 is by a micrometer head 45, 46 supporting the tool on the carriage. The finishing tool 51, which has a cutting edge complementary to the desired profile of the lens-rim is carried by a micrometer head 57, 58 on a support 56 which is adjustable about a pivot 55 on a carrier 52 adjustable about a pivot 53 on the bed 1 by means of a handle 54.
Patent GB-1276242-A (GB)
Title: Immersion heater heads
Inventor: OWEN WILLIAM GEORGE SIDNEY
IPC: H05B3/06
Filed: 1970-01-13
Abstract: 1276242 Immersion heater heads SANTON Ltd 8 Jan 1971 [13 Jan 1970] 1594/70 Heading H5H  An immersion heater head 1 comprises an externally threaded brass or copper cylindrical portion 2 for mounting in a hole 8 of a water heating tank 7, a brass or copper end portion 3 of the cylindrical portion 2 for retaining one or more heating elements 9 in position in the head, and a plastics flange portion 4, formed with flat surface parts 6 for engagement by a spanner, secured to the cylindrical portion 2. Portion 4 may alternatively have a circular peripheral surface which is radially slotted to provide surface parts for engagement by a C-shaped spanner. Preferably, however, the peripheral surface is octagonal, hexagonal or square-shaped. The flange portion 4 is moulded upon portion 2 to surround a flange or rib 5 or a knurled end 11, Fig. 2 (not shown). Alternatively, the flange portion is screw-threaded on the cylindrical portion, Fig. 3 (not shown), and a resilient sealing washer is provided. The two parts are secured together by dowel pins, adhesives or other mechanical locking means. The plastics portion is of thermosetting or thermoplastic material and may be chlorinated P.V.C., glassfilled nylon, asbestos-filled polypropylene, acetal copolymers and phenolic resins. The flange portion may have a cylindrical extension 20, Fig. 3 (not shown), providing the sides of a cover for the head. Portions 2 and 3 provide an integral cup housing thermostat control switches, electrical connections, heater element ends and possibly a manually operable switch for selecting the desired heating element.
Patent GB-267892-A (GB)
Title: Driving device for centrifugal separators
IPC: B04B9/08
Filed: 1927-01-19
Abstract: 267,892. Aktiebolaget Separator. March 18, 1926, [Convention date]. Driving.-A centrifugal separator is adapted for hand and power operation, two shafts 2, 4 being supported in the frame and connected by gear wheels 3, 5. The lower shaft 4 is the worm shaft and its pinion 5 carries an extending cylindrical part with a groove 7. The gearing is enclosed by a guard 8 secured to the frame by screws and carrying a bearing 10 for the shaft 11 which has a lug 12 to enter the groove 7. The shaft 11 has a loose pulley 12a and a pulley 13 which can be clutched to the shaft by the centrifugal clutch 16, 17. The belt shifting mechanism 14 is carried by the guard 8. When the driving motor is an electric motor the shaft 11 has only one belt pulley and that is provided with a friction coupling.
Patent GB-371034-A (GB)
Title: Method of and means for sifting materials in jet impact pulverizers
IPC: B02C19/06
Filed: 1931-01-17
Abstract: 371,034. Impact pulverizers. ANGER, P., 59A, Beselerallee, Kiel, Germany. Jan. 17, 1931, No. 1656. [Class 59.] In a jet impact pulverizer a circular motion is imparted to the gaseous carrier and sus. pended material in order to separate out the coarse material which is again returned to the pulverizing jet. Material is fed through a conduit 4 and falls down the conical walls 1 of the casing into an ascending jet of air or steam from a nozzle 3 and is projected on to a block 6 where it is pulverized. The gaseous carrier and suspended material pass outwardly and are deflected by adjustable vanes 7 into an inner perforated casing 9, the coarse material passing through the perforations and returning to the jet whilst the fine material is carried away through an outlet 8. The vanes 7 may be operated independently or collectively. The inner and outer casings 9, 2 may be cylindrical, and the casing 9 may be dispensed with or the casings 1, 2 may form a single conical casing. Additional air or steam may be supplied to the casing through nozzles which may be radial, tangential, or movable, with or without pivoted deflecting blades.
Patent GB-879348-A (GB)
Title: Improvements in and relating to tubes
IPC: C04B35/532
Filed: 1960-01-19
Abstract: A graphite tube having internal and external helical fins is produced by baking and graphitizing an extruded mixture of coke flour, graphitized coke base flour, carbon black, ground pitch, furfural, and furfuryl alcohol, the ratio by weight of furfural and furfuryl alcohol to pitch being between 1 to 3 and 1 to 6. The pores of the tube have a diameter of less than 9 microns and the total volume occupied by the pores is less than 0.18 c.c. per c.c. of tube wall. Extrusion may be effected at a temperature of 90 DEG C. and a pressure of 1000-2000 p.s.i.  The graphitized tube may be impregnated once or twice with resin.
Patent GB-1146150-A (GB)
Title: Improvements in or relating to belt-transmission systems
Inventor: THELLUFSEN JORN
IPC: F16D13/02
Filed: 1967-01-13
Abstract: 1,146,150. Belt gearing. DET STORE NORDISKE TELEGRAF-SELSKAB (A.S.). 13 Jan., 1967 [26 Jan., 1966], No. 1845/67. Heading F2Q. In a disengageable belt drive, e.g. for a tapefeed mechanism, comprising a belt 12 passing round a driving pulley 11 and round a driven pulley 13 connected by a slip coupling to an output shaft 14 to which is secured a spider 15 having one or more arms 16 extending axially close to the belt-engaging surface of pulley 13, the greatest peripheral distance between two successive edges of arm(s) 16 is larger than or equal to the circumferential length of the portion of pulley 13 engaged by the belt, so that when an arm 17 of spider 15 is engaged by a pivoted stop 18 to prevent rotation of shaft 14, the arms 16 are clear of the belt, and when the stop 18 is removed, the torque in the slip coupling rotates the spider until the, or the leading arm 16 is gripped between the belt and pulley 13 to transmit a much higher torque to the output shaft than that of the slip coupling. The stop 18 may be returned to stop-shaft 14 after one revolution, or, if it is held clear, momentum and the slip coupling torque rotate the shaft 14 through the zone in which the arm(s) 16 are free of the belt. Other configurations of arms 16 allow stopping of shaft 14 at more than one point per revolution. The slip coupling is formed by spring urging pulley 13 axially into frictional engagement with the spider 15.
Patent GB-1142095-A (GB)
Title: Method for producing gallium arsenide devices
Inventor: ANTELL GEORGE RICHARD
IPC: H01L29/207
Filed: 1967-01-13
Abstract: 1,142,095. Semi-conductor devices. STANDARD TELEPHONES & CABLES Ltd. 11 Jan., 1968 [13 Jan., 1967], No. 1851/67. Heading H1K. A method of producing an " intrinsic " [semi-insulating] region in an N-type GaAs body comprises diffusing-in oxygen through an oxygen permeable surface layer. The surface layer may be silica and it is stated that oxygen does not convert areas not covered with the oxygen permeable layer. In a first embodiment a PIN diode is pro duced by depositing a layer (3) of silica Fig. 1a (not shown), on the surface of an N-type epitaxial layer 1 on an N + type GaAs substrate 2, and diffusing oxygen through the silica layer to form an intrinsic layer 4, Fig. 1b (not shown). The oxygen is preferably supplied in the form of water vapour. A P+type layer is then produced in the semi-insulating layer 4 by evaporating-on a layer 5 of gold containing zinc at an elevated temperature on to the layer 4, quickly cooling, and evaporating-on a layer 6 of gold at a lower temperature, Fig. 1c (not shown). The electrode is then electroless plated with a layer 7 of nickel followed by a thin layer 8 of gold, Fig. 1d (not shown). The body is cut into mesa diodes, Fig. 1e, which are lightly etched and mounted in individual housings, Fig. 1f (not shown). In a second embodiment, planar type PIN diodes are produced by depositing a layer of silica, removing part of the layer using a photo-resist technique to leave islands, Fig. 2a (not shown), and covering the surface and islands with a second silica layer of equal thickness, Fig. 2b (not shown). Oxygen is then diffused into the body and penetrates to a greater depth in the areas between the islands than in the areas under the islands, Fig. 2c (not shown), so that the breakdown voltage of each diode is determined by the parts of the intrinsic layer under the islands. P + type regions are produced on these thinner parts of the intrinsic layer by the method used in the first embodiment. The body is then cut into individual devices, Fig. 2d (not shown), which are lightly etched and mounted in housings with the electrodes on the P+type regions in contact with copper studs which form heat sinks, Fig. 2e (not shown).
Patent GB-668902-A (GB)
Title: Improvements in or relating to change speed mechanism
IPC: F16H61/02
Filed: 1950-01-25
Abstract: 668,902. Change-speed gearing. EATON AXLES, Ltd. Jan. 25, 1950, No. 1956/50. Class 80 (ii). An electromagnetically controlled epicyclic two-speed gear comprises a ring gear 46 secured to the driving shaft 34, a planet carrier 58 secured to the driven shaft 40, and a sun gear 48 which is slidable and rotatable on the shaft 40 and to which is secured an armature disc 74 formed on one side with clutch dogs 76, engageable with projections 68 on a plate 64 secured to the carrier 58, and on the other side with protuberances 78 engageable with a radial part 4 of the housing 20, in which latter is fixed an electromagnetic coil 70. With the coil de-energised, a spring 80 moves the gear 48 and armature 74 to the left to lock the gears solid for direct drive. On energising the coil, the disc 74 is drawn to the right and held stationary in contact with the wall 4, though spaced slightly from the coil, giving a reduced drive. Alternatively, the driving and driven shafts may be interchanged, so that direct or overdrive is obtained.
Patent GB-341270-A (GB)
Title: Improvements in engine starting apparatus
IPC: F02N99/00
Filed: 1930-01-20
Abstract: 341,270. Turning - gear. ECLIPSE AVIATION CORPORATION, 545, North Arlington Avenue, East Orange, New Jersey, U.S.A. Jan. 20, 1930, No. 1964. Convention date, Jan. 30, 1929. [Class 7 (v).] An engine starter comprises a low-speed shaft 15 with a clutch member 17 for engaging an engine member 18, a flywheel shaft 7 axially aligned with the shaft 15 and having its bearing 9 in a barrel 14 surrounding the shaft 15, a countershaft 27, and a train of gearing connecting the shafts 7, 15 and including a yieldable driving connection. The shaft 7 of the flywheel 6 has gear teeth 31 engaging a gear 30 loosely mounted on the countershaft 27 by means of a multiple-plate friction coupling 34, 35, alternate plates 34 being splined upon a tubular extension 32 of the gear 30 and upon the countershaft 27, and the plates being maintained in engagement by a dished spring plate 36. A gear 26 on the shaft 27 engages a gear 24 mounted on the flange 22 of the barrel 14, in which the shaft 15 is splined and is moved axially by shifting means engaging a ring 20. The flywheel is set in rotation manually by means of a cranking shaft 46 carrying a worm 45 engaging a worm wheel 39 meshing with a pinion 38 on the end of the sleeve 14. The wheel 39 is mounted on a bolt 43 threaded in a part 44 of the casing 2 and is recessed to provide a seat 40 for a bearing 41 held in place by a retaining ring 42.
Patent GB-509782-A (GB)
Title: Turbo gear for the braking of vehicles
IPC: B61H11/08
Filed: 1938-01-20
Abstract: 509,782. Hydraulic power transmitters. VOITH, W., VOITH, H., and VOITH, H., (trading as VOITH, J. M., [Firm of]). Jan. 20, 1938, No. 1969. Convention date, Feb. 3, 1937. Drawings to Specification. [Class 69 (ii)] A vehicle, for example, a railway vehicle, comprises, in addition to the main transmission between the motor and .the running wheels, a turbo-converter which is normally inoperative but is adapted to be brought into use for braking; the diameter on which is disposed the inlet section of the turbine element is smaller than the diameter on which is disposed the outlet section of the turbine element, whereby the same -direction of circulation in the circuit is maintained under all braking conditions; alternatively, the diameter on which is disposed the inlet section of the turbine element is not larger than the diameter on which is disposed the outlet'section of the turbine, in consequence of which arrangement, by suitable choice of blade forms and disposition of the blade rings (for example by providing reversing guide means between the pump motor and an axialflow turbine rotor having substantially equal inlet and outlet angles), the same direction of circulation in the circuit is maintained under all braking conditions.
Patent GB-739258-A (GB)
Title: Improvements in and relating to implements for making cuts in chestnuts
IPC: A47J43/28
Filed: 1954-01-25
Abstract: 739,258. Nutcrackers. BRUCKER, K. Jan. 25, 1954, No. 2173/54. Class 128. [Also in Group XXIII] The pivoted arms 2, 1 of a pair of tongs having nutcracker jaws 9 are respectively provided with a hole 4 which receives a chestnut, and a detachable cutting tool comprising two or more knife edges 7a, 7b which cross. The edges of the hole may yield.
Patent GB-304476-A (GB)
Title: Improvements in low-water level alarms for steam generators
IPC: F22B37/42
Filed: 1928-01-24
Abstract: 304,476. Butler, A., and Butler, R. Jan. 24, 1928. Alarms, low-water.-A low-water alarm actuated by a thermostatic electric switch according as the thermal element is subjected to the temperature of steam or water comprises a pipe 1 connected at its ends to the boiler across the normal level x, x. A loop of piping 4, 5, 8, 10, 11 has its end 4 connected to the pipe 1 at the normal level, and its end 11 at a lower level, while a thermostatic device 6 is connected at the top. The pipe system is constructed of ordinary piping connected by standard bends and couplings. The piping 4, 5, 8, 10, 11 is first, completely filled with water by manipulation of the valves at the ends of the pipe 1, and the pet cock 12, so that in the absence of connection, the thermostatic device is relatively cool. If the end of the pipe 4 becomes uncovered, steam enters the piping 5, 8 and the device 6 is subjected to a higher temperature so that an electric circuit is completed and an alarm or indicator actuated. The thermostatic device, Fig. 2, comprises a bimetallic strip 13 carried by a plug 14 screwed into a branch 15 of the pipe. The plug 14 may have an axial bore to admit steam. The casing 16 carries terminals 17, 18, the latter being insulated and adjusable, and adapted to contact with the strip 13 to complete the circuit of the alarm.
Patent GB-980791-A (GB)
Title: Improvements relating to thermostats
Inventor: KENT EDWARD CHARLES
IPC: H01R13/713
Filed: 1961-01-20
Abstract: 980,791. Two-part couplings combined with switches. KENT & WELLS Ltd. Jan. 3, 1962 [Jan. 20, 1961], No. 2408/61. Heading H2E. A thermostat unit comprises plug and socket portions 2, 4 interconnected through a snapaction thermal switch. A control knob 7 for the switch is provided and the socket may have a shutter 11.
Patent GB-138338-A (GB)
Title: Improvements in pipe joints
IPC: F16L37/54
Filed: 1920-01-26
Abstract: 138,338. Krause, W. May 12, 1916, [Convention date]. Butt joints; ball-andsocket joints; couplings, disconnectible.- A support is provided on one pipe, and the other pipe is suspended from the support so that the weight of the suspended pipe presses the contacting faces into engagement. The contacting faces g and h of pipes a. and d are spherical in contour, and on pipe a is an arm b provided with several notches c. On pipe d is a hook e with a transverse bail f to engage in the notches. The tube d may be inclined slightly upwards to resist the tendency to downward buckling due to the weight of a series of connected pipes.
Patent GB-939644-A (GB)
Title: A vehicle for underwater operation
IPC: B63C11/48
Filed: 1961-01-20
Abstract: 939,644. Submarine vehicles. GENERAL MILLS Inc. Jan. 20, 1961 [Jan. 20, 1960], No. 2444/61. Class 68 (2). A vehicle for underwater operation comprises a chassis 10, endless tracks 16 on motor-driven wheels 18 and additionally propellers 24 for advancing the chassis over the ground, a buoyant superstructure 30 with propellers 36 for advancing it through the water in step with the chassis, and struts 48 connected to the chassis and superstructure by universal joints 50, 52 to permit movement of the superstructure, by reason of its buoyancy, to maintain its position vertically above the chassis despite deviations of the attitude of the chassis from the horizontal. The superstructure has vertically operating propellers 42 to lift the vehicle clear of obstacles on the bottom or to increase ground pressure to produce better traction by the tracks 16. The vehicle is provided with a manipulator 56, and is shown transporting a load in the form of a column or pipe 164. The various controls and supply of power are provided through a cable 240 from a ship 242.
Patent GB-371061-A (GB)
Title: Improvements in or relating to sheet metal cans or like containers
IPC: B65D53/02
Filed: 1931-01-26
Abstract: 371,061. Can &c. closures. SYKES, G. A., 2105, Bolton Street, Baltimore, U.S.A. Jan. 26, 1931, No. 2536. [Class 125 (iii).] A sheet metal can &c. is formed with an inwardly extending skirt with a shallow concave seat 12, 13 presenting a blunt ridge 14 above which is disposed a downwardly-turned ridge 17 on the lid domed at 15 and tightly fitting the can at 16. The gasket 18 is of approximately circular shape, before the can is vacuumized, and presents an external feather &c. 20 which is gripped between the ridges 14, 17. The gasket may present feathers or ridges projecting both outwardly as at 20 and inwardly at a diametral position viewed in cross section.