baber/WOPTO huggingface dataset:
Patent GB-947638-A (GB)
Title: Process for the manufacture of acrolein copolymers
IPC: C08F20/62
Filed: 1960-04-07
Abstract: Acrolein is copolymerized at a pH of 2.5 to 6.5 with one or more esters, nitriles or amides of acrylic or methacrylic acid in the presence of a free-radical initiator and at least one water-soluble solvent of the general formula: <FORM:0947638/C3/1> in which X represents a hydrogen atom or a methyl group, and Y represents alkoxymethyl, alpha-hydroxy alkoxymetnyl, omega - hydroxyalkoxymethyl, alpha - hydroxyalkyl or omega - hydroxyalkyl group in which the alkyl group contains 1 to 3 carbon atoms, or an acyloxymethyl group in which the acyl group is that of a C1-C4 saturated aliphatic monocarboxylic acid, or a tetrahydrofurfuryl cyanomethyl or dioxacyclopentyl-(1) group.  Examples of such compounds are ethylene, 1,2- propylene, 1,2 - butylene 2,3 - butylene, 1,3 - butylene and 1,4 - butylene glycols, glycol monomethyl and monomethyl ether, propylene glycol 1-methyl and 2-methyl ether, glycol monoacetate, diethylene glycol, glycerin monoformal tetrahydrofurfuryl alcohol and ethylene cyanhydrin.  The preferred initiators are of the redox type, in which the oxidizing component may be hydrogen peroxide, a persulphate or tert butyl, cumene or pinane hydroperoxide, and the reducing agent may be sodium metabisulphite, an alkali metal bisulphite, sodium formaldehyde sulphoxylate or silver nitrate. The polymerization may be carried out by a process which involves the addition of further quantities of the reactants as the reaction proceeds. The products form adducts with sulphurdioxide and bisulphites.  The examples describe the preparation of copolymers of acrolein with acrylonitrile, methylacrylate and acrylamide.
Patent GB-528013-A (GB)
Title: Improvements in and relating to steps for manholes and the like
IPC: E06C9/04
Filed: 1939-04-26
Abstract: 528,013. Wall steps. YOUNG, W. April 26, 1939, No. 12500. [Class 20 (ii)] A wall step for manholes comprises a U- shaped frame divided into two portions by an intermediate plate 2 which straddles the legs and acts as a stop plate during the construction of the'wall to prevent concrete passing through the aperture 7 in the shuttering 6. The shuttering is held in position by a wedge 8 passing through the loop 1 forming the step portion of the frame, while the ends of the legs are provided with hooks 4 to engage the concrete. A rib may be provided on the inner face of the step portion to abut against the wedge and for curved or inclined walls the plate 2 is correspondingly shaped or inclined.
Patent GB-551896-A (GB)
Title: Improvements in and relating to electric switches or interruptors
IPC: H01H35/40
Filed: 1941-09-26
Abstract: 551,896. Actuating switches. ORTIZ, J. O., and MARTI, A. S. Sept. 26, 1941, No. 12527. [Class 38 (v)] A balanced actuating arm, comprising a connected pair of cups 1. tilts when a stream of air &c. is directed on to one of them, to displace a flat bridge from contact with two springs 8, 10.
Patent GB-552266-A (GB)
Title: Improvements in or relating to aircraft landing gear
IPC: B64C25/40
Filed: 1941-09-26
Abstract: 552.266. Aircraft undercarriages. BENDIX AVIATION CORPORATION. Sept. 26, 1941, No. 12535. Convention date, Oct. 21, 1940. [Class 4] Aircraft landing wheels are driven prior to landing, to prevent damage to the wheels, by electric motors through an hydraulic clutch which serves also to brake the wheels after landing has been effected. The motors may be started and stopped automatically. The armature of an electric motor 65 mounted in the fixed axle 8 of the landing wheel 6 drives through a one-way clutch 68 the shaft 69 of the sun-wheel 52 of an epicyclic reduction gear the spindles 62 of the planet wheels 53 of which are secured to one member 57 of a hydraulic clutch. The inter gear member 49 of the epicyclic gear is fixed to the axle 8 and the other member 58 of the hydraulic clutch is. secured by screws 70 to the hub cap 26 of the wheel 6 which is mounted by bearings 11 on the axle 8. The clutch for energising the motor may be closed automatically by a centrifugal device when the main engines decelerate preparatory to landing and the circuit is automatically broken by the opening of a second switch by the landing gear as it completes its extension movement just prior to landing. Upon contact with the ground the wheel speeds up further, whereupon brake shoes 44 are engaged with the inner surface of an element secured to the member 57 of the hydraulic clutch by a centrifugal device 29 acting through a rod 36 and a cam 42. The clutch 57, 58 thus acts as a fluid brake. The brake shoes 44 are held applied by a detent 41 until disengaged by the operator of the aircraft through cable 17 and rod 14. The motor for extending and retracting the landing gear may also be controlled by the automatic switches that control the wheel motors 65.
Patent GB-1367931-A (GB)
Title: Protective shields for pneumatic tyres
IPC: B60J11/00
Filed: 1972-05-17
Abstract: 1367931 Tread bands C ROBINSON 17 May 1972 [1 May 1971] 12581/71 Heading B7C A tyre-protecting shield comprises two substantially semi-circular members 11, 12 hinged at 13 and releasably secured by a pin 14 engaging in registering holes in the two members. Each member is U-shaped in radial crosssection, and includes a circumferentially extending rib 16, 17. The ends of rib 16 are bifurcated at 18 and 19 to receive the ends of the rib 17, and the latter rib includes three holes 21 selectively registerable with opposed holes 22 in bifurcation 19 to adapt the shield to different sized tyres. The end 23 of the member 12 is adapted to overlap the adjacent end of the member 11 in each of the secured positions. The shield can be attached in the manner illustrated in Fig. 3 without removal of the wheel or jacking of the vehicle.
Patent GB-987225-A (GB)
Title: Improvements in or relating to lubricator assemblies for air pressure systems
IPC: F16N7/34
Filed: 1961-04-07
Abstract: 987,225. Lubricators. PARKER-HANNIFIN CORPORATION. April 7, 1961 [April 11, 1960], No. 12604/61. Heading F2A. A lubricator assembly 6 for use in air pressure systems, in which oil is conveyed in the air stream, incorporates a number of lubricator units 35 located in the housing between the body 16 and reservoir 17. Within the housing isa passage with valve means to control pressurization of the lubricant in the reservoir from the air system. The lubricator units 35 have a body portion formed by upper and lower ports and in which is located a reciprocatable spring-loaded valve member 64 which is adapted to seat at each end of its travel within the lubricator body. In operation oil is supplied in the air stream through pipes 7 and 10 via a control valve 11 to one or more points in the system. In addition, however, small quantities of oil are supplied to respective points in the system from the lubricators 35 in which the valve members 64 are actuated by pressure differentials between each side thereof due to pressure variations in the air system and pressurized lubricant in the reservoir.
Patent GB-197529-A (GB)
Title: Improvements relating to dental and other chairs
IPC: A61G15/02
Filed: 1922-05-04
Abstract: 197,529. Ash, Sons, & Co., Ltd., C., and Tolhurst, F. P. May 4, 1922. Seat backs.- In a dental or other chair of the kind in which the adjustable back is spring-supported so that the rotational torque of the spring is automatically varied in dependence on the inclination of the back, the variations in the torque of the spring are transmitted to the chair back through a lever system. In the construction shown, right and left handed springs B', B<2> have their ends b<3>, b<4> fixed to adjustable sleeves D<1>, D<2>, their inner ends b<1>, b<2> engaging slots c<1>, c<2> in a sleeve C<1> loosely mounted on the rod C. The sleeve C<1> is connected to the back K of the chair through the lever system G, H, I, and J. The pivotal point M of the chair back may be arranged to coincide approximately with the hip joint of the sitter, so that no relative motion occurs between the back of the sitter and the back of the chair.
Patent GB-401314-A (GB)
Title: Improvements in or relating to the manufacture of metal tubes
IPC: C22C9/06
Filed: 1932-05-03
Abstract: In a process for the manufacture of metal tubes, the tubes are formed from a soft copper-nickel-aluminium alloy containing 0,5-5,0 per cent of aluminium (preferably 1-3 per cent) and nickel about 3-4 times the aluminium content, and the tubes hardened by heating them to 300-600 DEG  C.  The alloy may be softened before working by heating to 800-900 DEG  C., and cooled rapidly, or the alloy may be hardened partially by cold working before forming the tubes.  The alloy may contain up to 37 per cent of zinc. Specifications 250,194, 254,042, [both in Class 72, Iron &c.], and 386,017 are referred to.
Patent GB-1366955-A (GB)
Title: Article of furniture with reinforced column supports
IPC: A47B13/06
Filed: 1971-05-03
Abstract: 1366955 Furniture frames and joints; tables RACE FURNITURE Ltd 5 Nov 1971 [3 May 1971 9 Sept 1971] 12716/71 and 42111/71 Heading A4H [Also in Division F2] A furniture article, e.g. a table, incorporates at least one column support formed from an elongate hollow structural member 1, 30 within which and substantially along the full length of which there is fixed a hollow reinforcing member 2, 50 the members contacting continuously or intermittently along their length at a number of discrete regions 3 of their cross-section. The members may be of rectangular, square, triangular, oval or circular section. The reinforcing member may be a torsion or jamfit in the structural member, and the members may be secured by welding, bolting or bonding. The members comprise steel, aluminium alloy, bronze or carbon filament fibre. The/or each column 30 is supported at each end by a plurality of radial members 20, (40) clamped thereto by a bolt 100 passed through a winged member 70 and screwed to a perforation 50a in reinforcing member 50.
Patent GB-705854-A (GB)
Title: Improvements in or relating to the control of machine tools
Inventor: MOEBIUS WALTER
IPC: G05B19/06
Filed: 1951-05-30
Abstract: 705,854. Lathes; machine-tool details. WERKZEUGMASCHINEN-FABRIK, GILDEMEISTER & CO., AKT.-GES. May 30, 1951, No. 12720/51. Class 83 (3). [Also in Group XXIV] Means for controlling the spindle speed and feed of a machine-tool comprises a hydraulic valve 2 and an electromagnet 3a for each speedchanging step, each electromagnet being in series with a pair of switches 8a, 13a in parallel, one of each pair of switches being in a group controlled by one or more manually rotatable dog or cam drums 5, 6 and the other switches being in a second group controlled mechanically in dependence of the movement of a tool or work support. A turret lathe has the manually-controlled drum 5 for selecting eight feed speeds by three pairs of clutches such as la, 1b, and the manually-controlled drum 6 for selecting sixteen spindle speeds by similar clutches. Each pair of clutches is operated by a hydraulic valve 2 positioned by solenoids 3a-g, 4a-g actuated by switches 8a-g selected by adjustable cams 7 on two drums 5, 6. The drums may be replaced by a series of cam-discs and are rotated by hand-wheels 5a, 6a, Means are provided for preventing simultaneous operation of the manually-controlled drums 5, 6 and an automatic control drum 9. When push-buttons 14a are pressed to enable the clutches to be operated by manual rotation of the drums 5, 6, a solenoid 12 is energized to close auxiliary switches 12a-g and 13a-g and the main driving clutch 19 of the lathe is disengaged and a brake may be applied. Movement of the clutch also actuates a switch 20 to complete the circuit. The drum 9 is mounted coaxially with the turret and is only operative when the turret lock is engaged to close a switch 21. The drum carries cams to actuate the speed-change clutches as well as additional cams 10<SP>1</SP> to determine the direction of rotation of the main driving motor. A hand lever 22 is movable in two planes to control both the direction of rotation of the motor and a switch 22a which operates the clutch 19 and the brake. A relay 30 cuts off the power if a predetermined current is exceeded. The handwheels, such as 6a are provided with embossed discs to indicate the speed selected. The dogs 10 on the drum 9 are constructed as shown in Fig. 8. The drum 9 carries a sleeve 43, Fig. 7, formed with slots 44 into which are inserted plates 42 indicating the speeds for each of the drum positions. Indicating direction of spindle movement.- Two signal lamps 24 in the circuit indicate the direction of rotation of the motor. A circuit 28 for a coolant pump is also provided,
Patent GB-1389769-A (GB)
Title: Method of recovering fluorine components from waste gases
IPC: B01D53/06
Filed: 1973-03-16
Abstract: 1389769 Fluorine compounds removed from gases ELKEM-SPIGERVERKET AS 16 March 1973 [22 March 1972] 12759/73 Heading C1A Fluorine compounds, e.g. HF, are removed from gases by contacting the gases with steam in a single or multi-stage fluidized bed of Al 2 O 3  at a temp. of less than 600 C., wherein the steam content of the gas mixture in the bed is up to 95% by vol. The steam content may be as low as 0À5% by vol. and the temp. as low as 110 C. The Al 2 O 3  may have a surface area of 30-137 m.<SP>2</SP>/g. and may be sufficiently moist to supply all or part of the steam required. Alternatively the steam may be supplied from mixed wet and dry F-containing gases. The residue from the beds may be AlF 3  or an Al 2 O 3 /F mixture which may be heated to 400-500 C. to form AlF 3 .
Patent GB-728598-A (GB)
Title: Improvements in or relating to the art of delay electric firing of blasting explosive charges and appliances suitable for use in delay electric-firing circuits for such charges
Inventor: CANCE JAMES CRAIG REID
IPC: F42B3/00
Filed: 1952-05-21
Abstract: 728,598. Actuation of switches. IMPERIAL CHEMICAL INDUSTRIES, Ltd. April 9, 1953 [May 21, 1952], No. 12832/52. Class 38 (5) [Also in Group XXI] An electrically actuated delay switch consists of a closed tubular body c, having mounted in one end a pair of switch contacts t, T and in the other end a fusehead f formed by a resistance wire coated with a combustible material. The combustible material is ignited on the passage of an electric current through the resistance wire, and the hot gases so generated cause the metal diaphragm d to bridge the switch contacts t, T. The body may be of a conducting material so serving as one of the contacts, whilst the diaphragm d may be replaced by a movable metal cap, in which case a vent hole is provided in the body adjacent the contacts. A delay element, comprising a plug through which extends a core of combustible material, may be interposed between the fusehead and the diaphragm.
Patent GB-289818-A (GB)
Title: Improvements in or relating to automatic speed control mechanisms and the like
IPC: G05D13/00
Filed: 1928-05-02
Abstract: 289,818. Marconi's Wireless Telegraph Co., Ltd., (Assignees of Ranger, R. H.). May 2, 1927, [Convention date]. Centrifugal govenors; transmitting-mechanism.-The action of a centrifugal governor controlling a supply of air to a pneumatically-operated brake or other prime-mover coil, is modified by a mechanical resonant member which is controlled by the prime mover and which member controls a supply of air for modifying the governor action. The apparatus is primarily for use in transmitting and receiving pictures by radio, and its action is dependent upon a change in phase lag between the control of a secondary air supply by the prime mover to a bellows device modifying the governor action and that controlled by the mechanical resonant member. An electric motor 1 has a mercury-filled flywheel 8 and a disc 11 carrying a strip of spring-steel 12 with centrifugal weights 17, 18 secured to its shaft. The strip 12 has slots 15, 16 to permit movement upon an increase of speed, and has a rod 19 extending centrally therefrom which controls a valve controlling a supply of air from a source 24 to a bellows 29 operating a brake shoe 31. The bellows has a leak-valve 33, Fig. 1. A bellows 89 is arranged adjacent the governor, and operates to close the valve opened by the governor to take off the brake. A valve controlling the supply of air to this bellows is controlled by a third bellows 83, the air supply of which is under the control of two valves. One valve 45 is controlled by a rod 44 operated by a lever carrying a roller engaged by a cam 40<a>, Fig. 2, on a shaft 36 driven by the motor through reducing-gearing. A second valve 50, Fig. 5, controls the same air supply. This control comprises a metallic, sectorshape strip 47, Fig. 3, outstanding from resonant arm 46 carrying adjustable weights 51, 52. The arm 46 is secured to a spindle 53 mounted in bearings in a frame 55, 56, 57, and is set swinging by a helical spring secured to the spindle 53 and to an arm 62 oscillated by a rod 43 connected to a lever operated by a second cam 39<a> on the shaft 36. The valve 45 opens for not more than onefourth of a revolution of the cam shaft, and the valve 50 opens for one-half revolution. When the cam shaft rotates at the correct speed, the valve 50 opens as the valve 45 closes, and the brake is unaffected. If the motor speed is slow, the valve 50 opens before the valve 45 closes and the brake is released. If the motor runs too fast, the valve 45 closes before the valve 50 opens, the bellows is unaffected, and the brake is applied. During starting, the phase lag of the arm 46 results in both valves being open; the bellows holds the governor out of action. The arm 46 also carries a strip of soft iron, and the plate 56, electromagnets 66, whereby electric means may control its action.
Patent GB-1483994-A (GB)
Title: Ureaform type compound and method for the preparation thereof
IPC: C05C9/02
Filed: 1976-03-31
Abstract: 1483994 Urea - formaldehyde fertilizers CHEMICALS & PHOSPHATES Ltd 31 March 1976 [22 April 1975] 12933/76 Heading C1B [Also in Division C2] A fertilizer comprises a urea-formaldehyde condensation product having a nitrogen content of at least 41% by weight comprising (1) a main fraction which is cold-water soluble and (2) a second fraction which is cold-water insoluble and free from hot-water insoluble compounds.
Patent GB-967534-A (GB)
Title: Liquid examining means for electrophoresis apparatus
IPC: G01N21/86
Filed: 1963-04-02
Abstract: 967,534. Optical apparatus. TECHNICON INSTRUMENTS CORPORATION. April 2, 1963 [April 16, 1962], No.12954/63. Heading G2J. Apparatus for examining liquid in an electrophoresis cell comprises a radiation source from which light is transmitted via a longitudinal passage to and through the cell, the cell and the passage being relatively movable for the transmission of the radiation at different levels of the liquid in the cell. In addition the passage is provided with means which permits the exposure of the liquid in the cell to only a vertically narrow horizontal beam of the radiation. As shown light from a lamp 22, for example a deuterium lamp, is focused by condensers 30 on to a horizontal slit 32 whence the light passes to another horizontal slit 52 and a collimating system 54 whereby a narrow beam of radiation reaches the front surface of a prism 62. This prism is mounted in a rotatable sleeve in a housing 99 joining the two tubes 26 and 74 and disperses the light in such a way that the horizontal rays leaving the exit surface 66 of the prism are of the wavelength required for examining the liquid in the electrophoresis cell 12. The light leaving the exit surface is focused by lenses 72 on to another slit 76 so that only the horizontal rays traverse the cell, these rays passing through a further slit 86 and being focused by lenses 90 on a photomultiplier 14. The cell 12 is disposed between the slits 76 and 86 and is carried by a non-rotatable threaded rod 16 on which is a sleeve 18 which is rotatable by gearing 20 to effect movement of the cell to change the level of the liquid through which the horizontal beam is passed. Change of the wavelength incident on the cell is effected by rotation of the prism about the axis 98. This prism is mounted in a cylindrical sleeve 60 by being resiliently pressed by a locking ring at one end of the sleeve against a circular member fixed at the other end of the sleeve. The sleeve extends from one side of the housing 99 and is embraced by a split ring 118, the arms 120 of which are slidably engaged by an eccentric part of a rotatable shaft 122 mounted in the housing 99 so that a relatively large rotation of the shaft 122 produces a relatively small rotation of the ring 118 and therefore of the prism 62. The wavelength set can be read off on a circular scale 132 which co-operates with an index on a dial 130 connected to the shaft 122. A locking screw (not shown) prevents further rotation of the prism after the wavelength has been set. Specification 950,042 is referred to.
Patent GB-1183003-A (GB)
Title: Improvements in or relating to Latches.
Inventor: SCHOTT MARCEL RENE
IPC: B64C25/26
Filed: 1968-03-18
Abstract: 1,183,003. Latches. SOC. D'EXPLOITATION DES MATERIELS HISPANOSUIZA. 18 March, 1968 [22 March, 1967], No. 13022/68. Heading E2A. A latch comprises a pivoting latch bolt 3 which engages a keeper finger 1 on a retractable undercarriage or the like, the latch bolt being retained in engagement by a roller 6 on a link 8, the roller engages an abutment surface 4 on the latch bolt, the link 8 being mounted on a pivot S on a link 7 pivotable at Y to a fixed structure, the link 8 being fixed angularly relatively to link 7 by a lever 17 pivotable on link 7 engaging a lug 15 projecting on the link 8; the latch bolt being released by operating a hydraulic cylinder 9a which causes the link 7 to pivot and the roller 6 to disengage the surface 4 of the latch bolt. If the hydraulic cylinder is inoperative, a second emergency release mechanism is operable, by pulling cable 22 and lever 19, pivoting at T, pivots lever 17 to disengage the lug 15, to release the links 7,8 for relative angular movement. A spring pressed plunger 10 then pivots the link 8 to disengage the roller from the abutment surface and thus free the latch member. The links 7, 8 are automatically secured in angularly fixed relation when the hydraulic cylinder is operated. The roller 6 automatically engages the surface 4 when a load abuts the surface 14 of the latch member and thereby pivots it to engaging position. A visual indication of the latching of the load is provided by a lever 28 on the link 8 making contact with a button 27 on a contactor 26 when a load is latched.
Patent GB-820152-A (GB)
Title: Improvements in coated abrasive wheel elements
IPC: B24D13/04
Filed: 1956-04-27
Abstract: 820,152. Abrasive wheels: abrasive sheets. NORTON CO. April 27, 1956 [May 20, 1955], No. 13041/56. Class 60.  A coated abrasive wheel element comprises a substantially rectangular woven backing member having a length greater than its width bearing on at least one side thereof a layer of abrasive grain adhesively secured to the backing member, one set of the threads of the woven backing being disposed at an angle greater than 0 degrees and less than about 30 degrees to a medial line extending in the length direction of the backing member. The wheel may be a flap wheel utilizing a plurality of straight rectangular elements extending radially outward from the central hub, or may be a wheel utilizing pleated elements as in Specification 755,192. In cutting an element 62, Fig. 6, from a length of coated abrasive material 60, the long sides 63 of the element are cut at an angle of 30 degrees to the warp direction of the material, so that when the element is pleated and folded about a supporting member 13, Fig. 8, of a wheel the warp threads 64 of the element are at an angle of 30 degrees to the axis of rotation of the wheel. Alternatively, the long sides 73, Fig. 7, of the element 62 are cut at a small angle, e.g. 5 degrees to the weft direction of the material 60, so that when the element is pleated and folded about a supporting member 13, Fig. 9, of a wheel the warp threads 64 of the element are at an angle of 5 degrees to the radius of the wheel.