baber/WOPTO huggingface dataset:
Patent GB-1530451-A (GB)
Title: Production of gypsum from by-product calcium sulphate
IPC: C01F11/46
Filed: 1975-01-22
Abstract: 1530451 Hydration of calcium sulphate hemihydrate BPB INDUSTRIES Ltd 22 Jan 1976 [22 Jan 1975] 2849/75 Heading C1A Calcium sulphate dihydrate is obtained by hydration of the α-hemihydrate by reaction in water with the addition of a volatile nitrogenous base. Typical bases include ammonia, preferably in solution as ammonium hydroxide, and ammonium carbonate. The product may be converted to the #-hemihydrate by conventional calcination.
Patent GB-1308283-A (GB)
Title: Drill rod structure
IPC: F16L15/04
Filed: 1971-01-21
Abstract: 1308283 Pipe couplings; drill pipe couplings HEATH & SHERWOOD DRILLING Ltd 21 Jan 1971 [31 March 1970] 2906/71 Headings F2G and F2U [Also in Division E1] Aluminium alloy drill pipes 10, 11 are connected by threaded steel couplings 12, formed of two. parts 13, 14 screwed together at 17, 18, and the joints are strengthened by co-operating annular shoulders 23, 24; 25, 26; 31, 32; and 33, 34. The threads 21, 22 may receive a threadlocking compound. An 0-ring seal 29 may be accommodated in a groove 30, the outer surfaces of the pipes and the coupling are flush.
Patent GB-262983-A (GB)
Title: Improvements in or relating to metallic fencing
IPC: E04H17/10
Filed: 1926-02-02
Abstract: 262,983. Corrie, B. J. B. Feb. 2, 1926. Wirework fencing comprises wirework E secured to droppers C and runner wires D by clips F. The runner wires may be clipped between the wirework and the droppers as in Fig. 3, or they may be passed through the wirework near the droppers and the clips applied as in Fig. 5. Alternatively the runner wires and wirework may be on opposite sides of the dropper.
Patent GB-556666-A (GB)
Title: Improvements relating to fuel-injection engines
IPC: F02B23/04
Filed: 1942-03-13
Abstract: 556,666. Oil engines. SANDERS, A. F. March 13, 1942, No. 3371. [Class 7 (iii)] Injection of fuel takes place into a compact cavity 14, preferably. partspherical, provided at one side of the cylinder head and communicating through an opening 15, formed in a plane slightly inclined from the normal to the cylinder axis, with a space 17 formed at the same side of the cylinder head. In order to prevent particles of carbon from entering between the piston and cylinder, the piston crown is inclined at 18 slightly away from the cylinder wall so as not to contact therewith. The face 20 of the piston may be inclined, in whole or in part, parallel to the plane of the opening 15. Specifications 440,046 and 531,075 are referred to.
Patent GB-499543-A (GB)
Title: Improvements in or relating to air rifles
IPC: F41B11/55
Filed: 1938-02-03
Abstract: 499,543. Air rifles. SCHMEISSER, H. Feb. 3, 1938, No. 3390. [Class 119] The cooking lever 5 of an air rifle is coupled by a link 14 to an arm 13 carried by an apertured plug 11 whereby, during cocking, the plug is rotated to receive a shot from a inagazine 10 and is then turned back to align the aperture in the plug with the bore 9 of the barrel. The cocking lever passes upwardly through a slot in the rod 2a of the air-piston 2 and is jointed at 5d.
Patent GB-593705-A (GB)
Title: Improved joint and locking device for surgical appliances and artificial limbs
IPC: A61F2/64
Filed: 1945-05-01
Abstract: 593,705. Hinges. KRUMBOCK, L. L. May 1, 1945, No. 3409. [Class 65 (ii)] [Also in Group VI] Pivoting adjustments.-In a surgical appliance having a joint of the kind in which one member 2 is pivoted between the bifurcated ends of another member 1 and may be locked in one position by means of a sleeve 5 which slides over a tongue 11 of the member 2, the bifurcated member is made circular in cross section adjacent the joint and the bore of the locking sleeve is also made circular so that it may be rotated to present a new wearing surface to the tongue. The sleeve 5 is forced downwards by a spring 6 so that the joint is automatically locked when the two members are in line. The sleeve may be held in the unlocked position by means of a pin 4 which engages a bayonet slot in the sleeve 5.
Patent GB-1071915-A (GB)
Title: An improved bearing means for the bottom of a window of the rotatable casement type
IPC: E05D7/08
Filed: 1964-05-07
Abstract: 1,071,915. Casement hinges. GRETSCHUNITAS G.m.b.H. May 7, 1964 [Nov. 23, 1963], No. 3454/67. Divided out of 1,071,914. Heading E2F. A bearing means for the lower journal pin 41 between the lower members of the fixed frame and casement reversible through 180‹ about a central axis X as disclosed in Specification 1,071,914 comprises an elongated plate 39 adapted to be fixed to the lower rail 38 of the fixed frame so that longitudinal sealing rib 45 is abutted by sealing strip 46 extending from the lower rail 43 of the casement when in either of the two closed positions, the plate 39 being formed with an upwardly opening annular socket 40 which interrupts the rib 45 and is for receiving the journal pin 41 and with an upstanding flange 48 partially surrounding the orifice of the socket on one side of the plate 39, the flange 48 having its ends 53 substantially continuous with the ribs 45 and having a height at least equal to that of the rib 45. The bearing preferably comprises an annulus 50 of thermoplastic material which surrounds the pin 41 between the flange 48 and the socket 40 and is contiguous with the sealing strip 46 on opposite sides of the socket to give weather protective cover to the pin 41 on one side of the window aperture. The annulus 50 may also have a depending part annular portion 50; the ends of which abut the flange 48 and so cover the other side of the pin 41 and prevent rotation of the annulus 50 with the casement frame. The annulus 50 is prevented from dislocation by inwardly extending flanges which sit on a shoulder formed on the flange 48. An alternative form of annulus 50 is described and has a pair of diametrically opposite radial arms which abut against the sealing strip 46 on opposite sides of the socket 40 (Figs. 8-11 not shown).
Patent GB-673723-A (GB)
Title: Process for producing acetals of aldehydes containing at least four carbon atoms
Filed: 1950-02-10
Abstract: Acetals of aldehydes containing at least 4 carbon atoms and of formula <FORM:0673723/IV (b)/1> are produced from acetals of the formula <FORM:0673723/IV (b)/2> which are of the type disclosed in Specification 653,081, where R, R1, R2, R3 and R4 may be alkyl, aryl, or aralkyl and n is an integer from 0 to 10 by the action of hydrogen at a pressure of from 50 to 400 pounds per square inch and at a temperature of from 20-160 DEG  C. in the presence of a noble metal hydrogenation catalyst under acidic anhydrous conditions. Catalysts mentioned are platinum and palladium preferably employed on carriers such as charcoal and pumice.  A small amount of acidic material should be present such as the mineral acids, hydrochloric, phosphoric or sulphuric acids, or acid salts such as zinc chloride, cadmium chloride or sodium bisulphate, or an organic acid such as acetic, or p-toluene sulphonic acid. Diethers mentioned as starting materials include 1 : 1 : 3-trimethoxybutane, 1 : 1 - dimethoxy - 3 - ethoxybutane, 1 : 3 - dimethoxy - 1 - ethoxy - butane, 1 : 1 : 3 - trimethoxy - 5 - ethoxy - hexane, 1 : 1 - dimethoxy - 3 : 5 - ethoxy - hexane, and 1 : 1 - dimethoxy - 3 : 5 : 7 - ethoxy - octane.  These compounds may be obtained as described in Specification 653,081. In addition ethers containing aryl groups may be used.  Such compounds include 1-phenoxy-1 : 3-dimethoxy-butane, 1 : 1-dimethoxy-3-phenoxybutane and 1 : 1 - dimethoxy - 3 - benzyloxybutane.  In examples (1) 1 : 1 : 3-trimethoxy-3-phenyl propane is reduced in the presence of palladium or charcoal to give the dimethyl acetal of hydrocinnamyl aldehyde; (2) 1 : 1 : 3-trimethoxy-butane is reduced to dimethyl butyral.  More drastic reduction conditions than those used in the present invention result in the acetal group being also reduced as is described in Specification 673,724.
Patent GB-1098735-A (GB)
Title: Improvements in or relating to telescope attachments for spectacles
IPC: G02B25/00
Filed: 1966-01-26
Abstract: 1,098,735. Magnifying attachments for spectacles. C.H. KEELER. Aug.24, 1966 [Jan.26, 1966], No.3537/66. Heading G2J. A pair of spectacles have a magnifying attachment 14 attached to at least one lens 12 thereof by means of a metal or plastics sleeve 13, one end 15 of which is cemented into a circular groove 16 in the surface of the lens. The end 15 of the sleeve 13 may be in a plane 17 parallel to the general plane 18 of the lens 12, but may be inclined to the body of the sleeve 13 such that the optical axes of the magnifying attachments 14 on both lenses meet at a point of focus. The magnifying attachment 14 may be a telescope unit or a single glass or plastics lens, which may be screwed into the sleeve 13. The sleeve 13 may be mounted by temporarily securing a disc to the rear side of the lens concentric with the optical centre thereof (dependant on pupillary distance of the user), mounting the lens rear side down in a jig, Figs. 5-6 (not shown), cutting the groove 16 with a trepanning tool mounted on a vertical spindle concentric with the disc, removing the disc and cementing the sleeve 13 into the groove. The orientation of the sleeves 13 may be checked by mounting a pointer, Fig. 7 (not shown), of the required length, in each sleeve and manipulating the spectacle frame until the ends of the pointers meet at the point of focus.
Patent GB-1364752-A (GB)
Title: Reducing hunting of an induction motor
IPC: H02P5/00
Filed: 1972-01-26
Abstract: 1364752 Control of AC motors V G YATSUK and V F PETRENKO 26 Jan 1972 3557/72 Heading H2J In an arrangement for reducing hunting in an induction motor 4 supplied from a controllable frequency inverter 10, a signal proportional to the derivative of the reactive load component of the current or power is used as positive feedback and in combination with a main control signal to control the frequency of the inverter in a sluice such as to reduce the hunting. As shown, a signal from a reactive current sensor 1 or a reactive power sensor 2 is applied to a differentiating unit 3 to produce the derivative which is added in the unit 12 to the control signal. The resulting signal controls a frequency controller 5 of the inverter 10. The sensor 1 is connected to a bank 11 of feed-back diodes of the inverter 10 which may be supplied from a rectifier 6 connected to an A.C. source. The rectifier 6 may have thyristors or diodes in a bridge circuit and be controlled by a phase control unit 7.
Patent GB-627745-A (GB)
Title: Improvements in or relating to apparatus for examining the hardness of materials
IPC: G01N3/42
Filed: 1947-02-06
Abstract: 627,745. Testing hardness of materials. ERNST, A. Feb. 6, 1947, No. 3567. Convention date, Feb. 6, 1946. [Class 106 (ii)] Hardness-testing apparatus comprises a spring-pressed feeler, which has a small hard point and is slidably fitted in a reference member so that when the reference member is applied to the surface under test the point is caused to penetrate the surface, and an indicator operated hydraulically by relative movement between the feeler and reference member to indicate the depth of penetration which is a measure of the hardness. The indentor 29 of hard metal or diamond is carried by the feeler 20 guided in a sleeve 25 and intermediate plate 16, both screwed into a casing 1, and is loaded by a spring 21. At its upper end, the feeler 20 engages a plate 19 associated with a diaphragm 14 on one side of a liquid chamber to which is connected a circular capillary tube 6 visible through a glass disc 4. A sprung sleeve 33, whose movement is limited by a screw 35 which slides in a slot formed in the sleeve 25, normally protects the indentor 29 and V-shaped slots 37 formed in the sleeve 33 prevent slipping when a curved surface is under test. In use, the casing is pressed towards the test surface until the latter is contacted by the plane end of the sleeve 25, when the depth of penetration is indicated by the liquid level in the tube 6. This level may be adjusted by means of a screw 12 threaded into the side of the liquid chamber.
Patent GB-833944-A (GB)
Title: Methods of and means for forming radiused objects, e.g., pipe bends or kerbs of concrete or like material
Inventor: STONE WALTER LOCKEY
IPC: B28B21/74
Filed: 1958-02-04
Abstract: 833,944. Moulding pipe bends. HUME PIPE & CONCRETE CONSTRUCTION CO. Ltd. Feb. 4, 1958, No. 3633/58. Class 87(2). Pipe bends are formed from concrete or the like by a succession of screeding actions using a former i and a rotatable arm c carrying a gauge plate g. The former i comprises a container partly filled with loose material (bricks, rubble &c.) j on which clay or other plastic material h is placed, and a gauge plate g with a contour corresponding to the exterior of the required pipe bend is swept round on the arm c and so screeds a groove in the clay. Concrete is placed in the groove, which thus shapes it to the required pipe bend exterior, and the plate g is replaced by one contoured to the required pipe bend interior and screeded through the concrete. The concrete is allowed to set partially, and core material, e.g. sand or clay, is then applied to the groove therein. The core is then screeded by a plate k contoured to the interior diameter of the pipe bend. Further concrete is applied to the screeded surface of the core and the gauge plate k is replaced by one contoured to the required pipe bend exterior and the process is completed by a fourth screeding operation. The arm c is bolted to a vertical spindle b which is rotatable in a pillar v which may be mounted on wheels, as shown, or bolted to the floor. The further end of the arm c is supported by a pillar n which can move in an arc over the floor on a roller d. The height of the arm c is adjustable by the provision of a series of bolt holes t on the spindle b and by a nut o on the pillar n. The gauge plate is screwed to a saddle p, q which is clamped at any position on the arm c, which is graduated in distances from the axis. On the spindle b is an arm e having a pointer u cooperating with a graduated dial plate f fixed to column v and marked in degrees of a circle.
Patent GB-911604-A (GB)
Title: Method of positioning objects
Inventor: HESSEN VICTOR BORIS
IPC: G21F7/06
Filed: 1959-02-02
Abstract: 911,604. Servicing reactors. PYE Ltd. Feb. 2, 1960 [Feb. 2, 1959], No. 3633/59. Class 39 (4). A method of positioning an object, e.g. a reactor refuelling machine, in relation to one or more predetermined points in which at least one television camera provided with reference means, e.g. a graticule in the optical system of the camera, is focused on an index means, either the camera or the index means being carried by the object, and the relation between the reference means and the index means in a television picture reproduced from the output of the camera gives an indication of the position of the object relative to the one or more predetermined points. As shown in Fig. 1, a refuelling machine 3 carries two television cameras 1, 2 having built-in vertical line graticules in the optical system, the cameras being positioned so that they view in an outward direction along two axes at right-angles to each other. Index points T are marked on adjoining walls 4 of the building in which the machine is situated and the machine is moved so that the graticule of each camera is aligned with its index point T as seen in the picture reproducing monitor for each camera. Thus the lines of view 5, 6 intersect at the point P which is the point at which it is desired to position the refuelling machine. A row of points T may be provided along the two adjoining walls 4 to define a series of imaginary co-ordinates forming a grid (Fig. 2, not shown) at the intersection of which the reactor charge tubes are located.
Patent GB-1382237-A (GB)
Title: Olfactory compositions
IPC: A61Q13/00
Filed: 1971-02-02
Abstract: 1382237 Olfactory compositions R P MICHAEL 12 Jan 1972 [2 Feb 1971] 3697/71 Heading A5B A composition for stimulating the sexual activity of primates comprises a mixture of fatty acids including acetic, propionic and butyric acid and at least one of isobutyric, isovaleric and isocaproic acids dispersed in a physiologically acceptable vehicle including perfumes and toilet preparations.
Patent GB-229298-A (GB)
Title: Improved process for the manufacture of ethyl chloride
IPC: C07C17/08
Filed: 1925-02-10
Abstract: Ethyl chloride is produced by the interaction of ethylene and hydrogen chloride under pressure and at a temperature below 50 DEG C. and in the presence of aluminium chloride, ferric chloride, or their double compounds with ethylene.  The catalysts may be mixed with inert material which is preferably non-porous.  Instead of ethylene, gases containing ethylene may be employed.  According to the example, equal volumes of dry ethylene and hydrogen chloride are pumped into a steel autoclave containing ferric chloride and some glass balls until the pressure attains 30 atmospheres; the reaction begins at a temperature of 10 DEG  C. and is maintained by forcing in more reacting gases.  The process may be stopped at intervals for the withdrawal of the resulting ethyl chloride, or the operation may be made continuous by the provision of an outlet to the bottom of the autoclave through which the product can be drawn off.  The Specification as open to inspection under Sect. 91 (3) (a) describes also the use of the anhydrous chlorides of the highest oxidation stage of antimony, chromium, cobalt, magnesium, manganese, nickel, titanium, zinc and tin, and of their double compounds with ethylene, as catalytic materials.  This subject-matter does not appear in the Specification as accepted.
Patent GB-483252-A (GB)
Title: Improvements in or relating to pivots for scissors and the like
IPC: B26B13/28
Filed: 1936-10-22
Abstract: 483,252. Pivots. BARTLETT, B. G. W., and GOLDING, R. R. Oct. 22, 1936, No. 3802/37. Divided out of 483,246. [Class 65 (ii)] A pivot for scissors and the like has associated with it a flexible or resilient device comprising one or more dished or cup-shaped members 18 separately mounted on the pivot pin 12, the base of the dish being at or near the contacting surfaces of the blades of the scissors. The dish is located in a clearance hole in one blade, the edge of the hole preferably being chamfered as shown. The members 18 are preferably slotted radially and are held down under stress by the pin 12, so that the blades are pressed together resiliently. Two dishes may be provided arranged back to back and riveted or otherwise secured together. The head of the pivot pin may be spherical.
Patent GB-621010-A (GB)
Title: Improvements relating to respiratory gas masks
IPC: A62B18/00
Filed: 1947-02-10
Abstract: 621,010. Respiratory masks. ENGLEBERT & CO. , and DAUTREBANDE, L. A. J. B. G. Feb. 10, 1947, No. 3882. Convention date, Feb. 9, 1946. [Class 81 (ii)] A mask for protection against dust and gases is open to the atmosphere at its upper edge 7 and is supplied with air under pressure through a nipple 3. Side pieces 1 rest against the face and chin and the mask is held in position by straps 9.
Patent GB-821514-A (GB)
Title: Improvements in or relating to brackets for scaffolding and the like
IPC: E04G5/04
Filed: 1955-02-09
Abstract: 821,514. Scaffolding. ARNOLD, S. K. Jan 31, 1956 [Feb. 9, 1955], No. 3890/55. Class 20(2) In one modification the horizontal member 5 of a scaffold bracket supporting scaffold planks is engaged in a socket 1 permanently embedded in a wall and having a face 34 to oppose its withdrawal, the bracket being secured by a nut 7. When not in use the ends of the socket are closed by plugs having surrounding rubber rings. The bracket comprises also inclined and vertical members 8, 12 of channel section hinged together at 11. In order that the bracket may be folded the member 5 engages between cross members 13, 14 on the member 12 and a removable pin 10 engages a hole in the member 5 and notches in the member 8. In the other modification the socket 1, Fig. 4, has fixed in a slot therein a cross bar 22, with a part 23 of which inside the socket is engaged a bayonet slot in the bracket member 8. The member 5 also has a cross pin engaging another bayonet slot in the socket. Keying projections 24 on the socket are embedded in the wall. An adjustable detachable bar 32, Fig. 1, receives scaffold planks.' The bar 5 may be extended so as to support planks on both sides of the wall.
Patent GB-1173761-A (GB)
Title: Improvements in or relating to Electrical Apparatus, e.g. Television Receivers
Inventor: TAYLOR CEDRIC
IPC: H01R33/76
Filed: 1966-01-31
Abstract: 1,173,761. Valve holders. E. K. COLE Ltd. 20 Jan., 1967 [31 Jan., 1966], No. 4120/66. Heading H2E. A connector for linking two E.H.T. valves 1 and 4 in a television receiver comprises an insulating body 13 which holds the valves in endto-end relation, the cathode lead of the valve 1 being connected, through a valve holder 16 which engages the base of that valve and a triangular metal plate 17, to a socket contact 18 which receives the anode top cap of the valve 4. Lugs 14 on the connector are slidably mounted in channel-shaped supports 7 and 8 on the upper end of which a bracket 20, which carries the base 19 of the valve 4, is slidably mounted by screws 21 engaging slots in the supports. The anode of the valve 1 is connected through a socket contact 11 and lead 12 to a winding 2 of a transformer 6 which provides the input voltage. An output lead to a cathoderay tube and leads from a transformer winding 5 which provides a heating voltage pass through the connector body 13 and are connected, through the holder 16, to base contacts of the valve 1. A screening can may surround the valve assembly.
Patent GB-237819-A (GB)
Title: Improvements in pulverizing apparatus
IPC: B02C13/08
Filed: 1925-02-14
Abstract: 237,819. Clarke, Chapman, & Co., Ltd., (Soc. Anon. la Combustion Rationelle). Feb. 14, 1925. Impact pulverizers. - Relates to rotary pulverizers in which the fuel &c. under treatment is caused to travel continuously in a path of which the pulverizer and a separator form parts, the pulverizer having only one beaterwheel which also acts as a fan and the separator being mounted on the pulverizer and communicating therewith through two passages, one passage forming a conduit through which fuel &c. passes from the pulverizer to the separator and the other passage forming a conduit for the return of oversize material from the separator to the pulverizer for further treatment. According to the invention, the pulverizer casing has a smooth inner surface and the beater-wheel is mounted on the end of its driving-shaft, the casing being in direct connection with the separator through a tangentially-disposed outlet passage and through a second passage disposed so that the oversize material which passes therethrough is delivered either centrally of, or on to the periphery of, the beater-wheel. As shown, Figs. 1 and 2, the beaters 8 are attached by brackets to a steel disc or plate 7 bolted to a coupling 6 keyed on the end of a shaft 1 which is driven by a motor, either through a coupling 5 or through a belt and pulley 4. The casing 6 is circular in section with two flat ends and its inner surface is smooth. The outlet 10 is disposed tangentially and may extend vertically. Any unpulverizable material collects in a recess 11 in the bed-plate and can be removed through a removable closure 12. The casing 9 and outlet 10 are, and the recess 11 may be, lined with metal or other wear-resisting material 13. Passages 15 in the flat ends of the casing communicate with the separator 16 mounted on the pulverizer. Adjustable air-inlets 19 are provided in the ends of the casing. The fuel &c. introduced through the passage 17 is pulverized by the beaters 8 and carried with the air through the outlet 10 into the separator 16, oversize material returning through the passages 15 to the pulverizer. In Fig. 4, the return duct 15 is tangential to the casing 9 so that it discharges on to the periphery of the rotor, and the feed-shoot 17 discharges into the duct 15.