baber/WOPTO huggingface dataset:
Patent GB-831223-A (GB)
Title: Improvements in or relating to hand trolleys
IPC: B62B1/12
Filed: 1957-04-04
Abstract: 831,223. Hand trucks. KAIL, J., and PORTSMOUTH, G. March 28, 1958 [April 4, 1957], No. 11035/57. Class 108(1) A hand truck has a frame 10a, 10b, 10c and 10d forming also the toe-plate 11 and a retractable handle 16 which is located by the transverse member 20 and locked in any desired position by the clamping means 19. An auxiliary frame 22 pivoted at 21 may be used to extend the toe-plate 11. The handle 16 may be bent over as at 16a.
Patent GB-1450302-A (GB)
Title: Rotary piston pumps
IPC: F04C15/06
Filed: 1974-03-13
Abstract: 1450302 Rotary positive-displacement fluid machines ZAHNRADFABRIK FRIEDRICHSHAFEN AG 13 March 1974 [15 March 1973] 11203/74 Heading F1F To reduce noise and pressure loss due to turbulence on the suction side of a sliding-vane pump a chamber 12 connecting an inlet aperture 13 to suction pockets 14, 15 in end-plates 3, 4 extends partially around a cam ring 2 so as to form a segment of a ring. Walls 19 separated by flow dividing projections 21, 22 are tangential to walls 20 of the suction pockets. A segment 17 supporting the cam ring also serves as a flow divider. A chamber 10 communicates with an outlet aperture 11.
Patent GB-1168869-A (GB)
Title: Aromatic Azido-Azomethines and Reprographic Copying Material containing the same
IPC: G03F7/008
Filed: 1967-03-10
Abstract: 1,168,869. Azido compounds. KALLE A.G. 10 March, 1967 [12 March, 1966], No. 11410/67. Heading C2C. [Also in Divisions C3 and G2] The invention comprises compounds of the formulµ where Q is H or a substituent, R is a mono- or di-valent isocyclic or heterocyclic aromatic group which may be substituted and the azido group is meta or para to the azomethine group. The compounds are prepared by reacting an aromatic amine with an aromatic azidoaldehyde.
Patent GB-165274-A (GB)
Title: Improved valve
IPC: F16K15/06
Filed: 1920-04-26
Abstract: 165,274. Brown & Co., Ltd., J., and Wood, W. H. April 26, 1920. Fluid-actuated valves.-A valve for controlling the connection between a high-pressure astern turbine and a low-pressure turbine exhaust comprises a fiat disc 1 mounted on a stem 2 which carries a dome 5 on the opposite side of the seating. The dome is provided with lugs 6 which limit the opening of the valve, and a ring 10 projects upwards into the dome. When the flow of steam is in the direction to seat the valve, the closing pressure is augmented by the pressure on the inner side of the dome.
Patent GB-637709-A (GB)
Title: Improvements in measuring power available from a.c. generators
IPC: G01R11/54
Filed: 1948-04-27
Abstract: 637,709. Power-meters. BRITISH THOMSON-HOUSTON CO., Ltd., and CARFRAE, W. J. April 27, 1948, No. 11544. [Class 37] A wattmeter 6, Fig. 1, has its voltage coil fed with the rectified voltage developed by an A.C. generator 2 and its current coil fed with a current, taken from a shunt 7, in the lead to the generator field 3, and proportional to the current in the field, so that the wattmeter indicates, by the degree of rotation of one of the coils, the maximum power that can be taken from the generator. A further wattmeter 10, Fig. 2, may be fed with the voltage and current delivered by the generator 2, and its indication mechanically combined with that of the meter 6 to give an indication of the difference between the power available and the power being taken. The current coil of the wattmeter 10 may be supplied from a summation transformer fed from current transformers 9 on all leads from the generator, Fig. 3 (not shown). In a further modification, the wattmeter 10 may be replaced by two wattmeters each responsive to one phase of the supply, Fig. 4 (not shown).
Patent GB-313695-A (GB)
Title: Improvements relating to the manufacture of compound sheets of glass and cellulose derivative compositions
IPC: B32B17/08
Filed: 1929-04-19
Abstract: 313,695. Heyl, G. E. April 19, 1928. Adhesives.-Air, vapour, and excess liquid are evacuated by suction or pressure when making compound transparencies of united glass, and cellulose derivative sheets, by providing on the contacting surfaces of the cellulose derivative sheet a series of closely arranged channels of any suitable formation communicating with the edges thereof. The sheet of cellulose derivative may be scored along intersecting lines, or softened and pressed with wire gauze, or formed with surface corrugations in manufacture, or left unpolished, or distance-pieces consisting of strips or frag-, ments of cellulose derivative may be interposed between the sheets.
Patent GB-990678-A (GB)
Title: Transportable tower cranes
IPC: B66C23/34
Filed: 1961-06-01
Abstract: 990,678. Erecting mobile tower-cranes. A. W. HOBBS. June 1, 1962 [June 1, 1961], No. 11553/63. Divided out of 990,677. Heading B8B. The tower 7, Fig. 1, of a mobile tower-crane is raised about a pivot 8 from a horizontal position, in which it is transported, to a vertical position by a screw 12 driven by a motor 13 which moves a nut-member 14, Fig. 3 along a guide 14c, the weight of the tower being supported by wheels 16 attached to both the member 14 and struts 15 pivoted on a base member at 10. The jib 30, 30a, Fig. 5, and counter-jib 34 are mounted on a securing ring supported by an inner telescopic tower member 37. The counter-jib 34 is raised by a rope 47 which is attached to a point 55 and passes over pulleys 45, 44, 46 to the nut-member 14 which is then drawn down by the screw 12. Jib portion 30a is lowered to rest on the ground from a folded transport position by a rope 53, Fig. 7, which is taken from a winch 50 round pulleys and a trolley 51 as shown in a continuous line. The broken line shows the path of the lifting rope 53 in use. Next, the rope 47, Fig. 5, is attached to a point 56 and passes over pulleys 45, 44, 46 to the member 14, downward movement of which raises the jib until the two portions are aligned. After the two portions have been locked together the complete jib is raised to a horizontal position ready for use.
Patent GB-459635-A (GB)
Title: Improvements in and relating to the preparation of hop extracts
Filed: 1936-04-23
Abstract: Hops, lupulin or lupulin-free hops, are extracted in two stages with (1) a low boiling solvent such as ethyl or petroleum ether or methylene dichloride followed by water or alcohol-water mixture, or (2) for old hops, by a higher boiling solvent such as ethyl alcohol, trichlorethylene, or ethylene dichloride followed by water or alcohol-water mixture, or (3) by a mixture of the above two types of organic solvents followed by water or alcohol-water mixture.  During distillation of the low boiling solvent extract, the hop oils remain in the extract together with the resins, while with the higher boiling solvent they pass over in the distillate from which they may be recovered.  The water extract contains the tannin, and to improve its keeping qualities may be mixed or emulsified with 3 to 5 per cent of alcohol.  The various extracts may be mixed in any proportion as desired.
Patent GB-888411-A (GB)
Title: Esterification of yohimbane derivatives
Filed: 1958-04-11
Abstract: 18b -Hydroxy-20a -yohimbane esters having the following structure at carbon atoms 16, 17, and 18 <FORM:0888411/IV (b)/1> wherein R is alkyl, aryl, aralkyl, or alkaryl, and R1 is -OCH3 or -CN, are prepared by esterification of the corresponding 18b -hydroxy compounds with the appropriate acid anhydride in the presence of a pyridine base and a second organic tertiary base stronger than pyridine, e.g. triethylamine, with warming and in the absence of air. Examples describe the preparation of reserpine, rescinnamine, deserpidine, 18b -(31,41,51 - trimethoxybenzoyloxy) - 17a  - methoxy16b  - methoxycarbonyl - 3 - oxo - 2,3 - seco - 20a  - yohimbane, and its 11-methoxy derivative, 18b -(31,41,51 - trimethoxycinnamoyloxy) - 11,17a  - dimethoxy - 16b  - methoxycarbonyl - 3 - oxo - 2,3 - seco - 20a  - yohimbane, 10 - chlorodeserpidine, and laevo - 18b  - (31,41,51 - trimethoxybenzoyloxy) - 11 - methoxy - 18b  - methoxycarbonyl - 17a - cyano - 3b ,20a  - yohimbane.  3,4,5-Trimethoxycinnamoyl anhydride is prepared from the acid by treatment with tosyl chloride and triethylamine in acetone. Specifications 809,912, 868,475, 868,477, 888,407, 888,408, 888,409, 888,410, 888,412, 888,413, 888,414 and 888,418 are referred to.
Patent GB-888412-A (GB)
Title: Improvements in or relating to reserpine compounds
Filed: 1958-04-11
Abstract: The invention comprises laevo-18b -(31,41,51-trimethoxybenzoyloxy) - 17a  - methoxy - 16b  - methoxycarbonyl - 3,4 - dehydro - 20a  - yohimbane, laevo - 18b  - (31,41,51 - trimethoxycinnamoyloxy) - 11,17a  - dimethoxy - 16b  - methoxycarbonyl - 3,4 - dehydro - 20a  - yohimbane, their perchlorates and a process for preparing alkaloids of the reserpine series by condensing a racemic and optically active 18b -hydroxy-17a -methoxy - 16 - methoxycarbonyl - 3 - oxo - 2,3 - seco 20a -yohimbane, which may contain a methoxy group in one or more of positions 9 to 12, with a functional derivative of an organic carboxylic acid, cyclizing the resultant ester with a dehydrating agent and saturating the 3,4-bond of the resulting alkaloid by treatment with a reducing agent.  Preferred functional derivatives are the acid chloride, anhydride or mixed anhydride, the cyclisation is preferably performed with phosphorus oxychloride and the reduction with zinc and acetic acid.  Detailed examples illustrate the process. 18b  - Hydroxy - 17a  - methoxy - 16 - methoxycarbonyl - 3 - oxo - 2,3 - seco - 20a  - yohimbane is prepared by methanolysis of (a) the corresponding 16 : 18-lactone or (b) the corresponding 18 - acetate. Specifications 809,912, 868,475, 868,487, 868,488, 888,407, 888,408, 888,409, 888,410, 888,411, 888,413, 888,414 and 888,428 are referred to.
Patent GB-1426957-A (GB)
Title: Water degassing device
IPC: F22D1/30
Filed: 1973-03-12
Abstract: 1426957 Water degasser KONINKLIJKE MACHINBFABRIEK STORK NV 12 March 1973 [14 March 1972] 11742/73 Heading B1M Boiler water under pressure to be degassed in the presence of steam is sprayed from nozzle portion 4 Fig. 1 as a screen to strike splash grating strips 46, Fig. 8 which surround the nozzle portion 4 to absorb the energy and cause a minimum of disturbance on the surface of the water in tank 1, and steam from 7 is introduced through outlet apertures 12. At least the top most strip but one may have recesses or apertures. The splash grating may be made by bending punched portions in a plate to form the strips (as in Fig. 5 not shown).
Patent GB-254683-A (GB)
Title: Improvements in weighing scales
IPC: G01G1/00
Filed: 1926-05-04
Abstract: 254,683. Dayton Scale Co., (Assignees of Strachan, T. H.). July 3, 1925, [Convention date]. Pendulum-weight apparatus. -A weighing scale is provided with an indicator driving-frame pivotally mounted upon the scale lever and maintained in a vertical position by a parallel motion check link. The scale lever 20 mounted on a fulcrum stand 21 supports the goods platform in the usual manner and carries, on knife-edges 40, the indicator-driving frame 42. The driving-frame is maintained in a vertical position by a check link 26<b> connected to an adjustable post 52. A similar link 26 engages the leg 23 of the platform support. The usual counterweight 43 secured to the driving-frame 42 is provided with a shot cup 46. The driving-frame actuates the indicator drum through an equalizer bar 58 and racks 59. An adjustable connection, Fig. 10, between the equalizer bar and the driving-frame facilitates the zero adjustment of the indicator drum and comprises a plate-like member 64 slotted to engage the equalizer bar, a plunger 65, a spring 74 and an adjusting screw 73. A pendulum-lever 33, Fig. 8, carrying an adjusting weight 37 is connected to the scale lever by a tape 35. A dash-pot 30, Fig. 1, is connected to one end of the scale lever so that the piston will descend upon the application of a load, this arrangement tending to obviate displacement of oil from the dash-pot. Links; bearings.-The pivots of the links 26, 26<b> are preferably arranged as shown in Fig. 3 in connection with the link 26, wherein the post 24 is provided with bevel surfaces 26<a> and the link is apertured and provided with pointed portions 27 co-operating with a stud 28 secured in the post. Specification 140,395 is referred to.
Patent GB-716218-A (GB)
Title: Improvements in or relating to electric circuit interrupters
IPC: H01H9/44
Filed: 1952-05-09
Abstract: 716,218. Arc-rupturing in switches. WESTINGHOUSE ELECTRIC INTERNATIONAL CO. May 9, 1952 [May 26, 1951], No. 11763/52. Class 38(5) In order to reduce the leakage flux of a magnetic blow-out used with an arc-chute in a circuit-breaker, a short-circuited low-resistance electric conductor is arranged to enclose each of the pole plates so that currents induced'in the conductors produce forces which oppose the leakage flux. In one form, Fig. 1, a U-shaped magnetic core comprising a yoke 6 and two pole plates 5 has a short-circuited conductor 45 around each plate 5. The yoke ends of conductors 45 may be bent towards each other at 47, Fig. 3, and a further smaller turn 50 may be arranged near the yoke, Fig. 5. In a circuit-breaker having an H-shaped core, a conductor 69, Fig. 11, having an extension 69a is used, the part 69a enclosing a transfer interrupting stack used to interrupt a central portion of the arc to insert the coil 65 into circuit. The conductor may be replaced by a plate, Fig. 13 (not shown). The chute contains a number of slotted insulating plates, the upper ends of the slots being staggered to give the arc a zigzag shape.
Patent GB-1374930-A (GB)
Title: Method of and apparatus for flash discharge
IPC: G03B15/05
Filed: 1973-03-12
Abstract: 1374930 Gas discharge lamps UNITED STATES SCIENTIFIC INSTRUMENTS Inc 12 March 1973 [30 May 1972] 11779/73 Heading H1D [Also in Division H2] A flash discharge tube has an anode 2, a cathode 4, a triggering electrode 5 and a further auxiliary electrode 1 adjacent the anode 2 and spaced therefrom by an insulating sleeve 3. The electrode 1 is used to provide a high electric field near the anode at the same time that the tube is triggered, but the insulation 3 is sufficiently extended towards the discharge gap to prevent arcing. The electrode 1 is secured to the insulating sleeve 3 by crimping. The main discharging voltage is applied to the tube via rectifiers R from a capacitor C. The triggering potentials are developed by R 1 , C 1 , R 2 , C 2  and R 3 , C 3  in response to a triggering signal pulse in the primary of transformer T. The anode and cathode can be reversed so that the electrode 1 surrounds the cathode, Fig. 2 (not shown). The tube can be filled with xenon. The cathode can be 95% tungsten and 5% barium aluminate.
Patent GB-226430-A (GB)
Title: Improvements in or relating to stays or struts for the hinged lids or covers of show-cases and other articles
IPC: A47F3/14
Filed: 1924-05-14
Abstract: 226,430. Poujols, J. Jan. 2, 1924, [Convention date]. Stays.-The hinged lid 2 of a show case or other article is held in an adjusted position by a pivoted strut 8, the lower end of which has a pin 10 engaging a ratchet-bar 5 pivoted at one end about a pin 6, the parts being so .arranged that to close the lid it is first raised until the pin 10 clears the last tooth of the bar, and thereafter moves under the bar as the lid is lowered into the closed position. The bar 5 is pivotally mounted in a box-like casing 4 slotted at its upper side to allow the. bar to move freely during the opening and closing movement of the lid. When the. lid is closed, the bar takes up the position 8<1> so that when the lid is again opened, the pin 10 travels up the inclined face 12 of the member 5 for engagement with the ratchet teeth.
Patent GB-1338481-A (GB)
Title: Tomographic apparatus
IPC: A61B6/02
Filed: 1971-04-28
Abstract: 1338481 Tomographic apparatus G S FREEDMAN 28 April 1971 [28 April 1970] 11961/71 Heading H4D In tomographic apparatus the radioactivity radiation collimator 30 is in the form of a disc having a mosaic plurality of parallel inclined apertures 37, 39, 43, 45, 47, 49, 50. In operation the collimator is rotated 180 degrees from a first position, Fig. 2, in which the photomultiplier and scintillation crystal assembly indicate the planar distribution of the radiation source 46, to a second position, Fig. 3, in which the axes of the apertures cross the first position axes at points defining a plurality of parallel section planes 150, 160, 170. By analysing the received radiation distribution in the second position with respect to that in the first, the depth distribution of the source 46 in the planes 150, 160, 170 in the 0 degree-180 degree vertical plane, can be determined. Movement of the apparatus towards or away from the source varies the position of the section planes and so increase depth definition, whilst planar definition is improved by taking measurements at more frequent intervals of rotation of the collimator.
Patent GB-527819-A (GB)
Title: Improvements relating to aluminium alloys
IPC: C22C21/00
Filed: 1939-04-21
Abstract: 527,819. Alloys. MILLS, Ltd., W., and PAIGE, J. F. April 21, 1939, No. 11999. [Class 82 (i)] Aluminium alloys suitable for bearings and other purposes and containing magnesium contain also over 2 and up to 5 per cent, of lead with or without up to 3.5 per cent. of antimony or up to 5 per cent. of cadmium or both. The amount of magnesium may be half or rather more of the amount of lead or of lead and cadmium. Specifications 366,483 and 498,766 are referred to.
Patent GB-1008525-A (GB)
Title: Thermally responsive fluid control valves
IPC: G05D23/02
Filed: 1964-03-20
Abstract: 1,008,525. Valves. RANCO Inc. March 20, 1964 [April 18, 1963], No. 12019/64. Heading F2V. A thermally-actuated valve for the cooling systems of engines comprises a cup-shaped member 11 providing flow ports 13 and a seating 12 for a closure member 17. The closure member is connected to a spindle 33 which enters a flexible sleeve 30 mounted in a housing 27 containing a thermally expansible substance 28, e.g. wax mixed with powdered copper, the housing being connected to member 11 by a fitting 26 having an extension 26a which passes through member 11 and carries a tension spring 35 which coacts with the spindle to urge the closure member on to its seat. A guide member 16 is held against member 11 by the spring and has a piston-like portion 16a, 20 for guiding the movement of the closure member. All the valve components in contact with the coolant may be of plastics material.
Patent GB-124139-A (GB)
Title: Improvements in and relating to Bolts and Lock Nuts.
Inventor: HARRELL ANNIE LAURA
IPC: F16B39/12
Filed: 1918-07-23
Abstract: 124,139. Harrell, A. L. July 23, 1918. Locking nuts. - A stem 12 on a cap 10 engages a lefthanded thread tapped in the bolt end, the cap bearing against the outside of the nut 4 to be locked. A nut 7 is then screwed on a left-handed thread 5 on the nut 4 and engages with a shoulder 9 on the cap.
Patent GB-217717-A (GB)
Title: Improvements in or relating to pillion seats for use upon motor cycles
IPC: B62J1/14
Filed: 1923-05-04
Abstract: 217,717. Dupree, F. G. W. May 4, 1923. Seat attachments.-A flexible seat G of leather, canvas, balata, plywood, &c. is connected at each end by metal strips F. to levers C, C<2>, which are pivoted at D, D<2> and are connected at their lower ends to one or more tension springs E contained in a tube A. The strips F may be extended as at F<2>, F<3> to form additional pivot members for the levers C, C<2> which are pivoted in lugs B, B<2> brazed &c. to the ends of the tube A. The lugs B, B<2> are provided with sockets H, H<2> for the reception of telescopic tubes J, K, J<2>, K<2>, having clips M, whereby the seat is adjustably secured to the carrier.
Patent GB-658983-A (GB)
Title: A dobby for open shedding
IPC: D03C1/00
Filed: 1948-05-03
Abstract: 658,983. Openshed dobbies. PROTOTYPA, NARODNI PODNIK. May 3, 1948, No. 12110. Convention date, Feb. 9. [Class 142(i)] Lifting rods 2 are actuated by cam grooves 3d in discs 3 which are selectively turned 180 degrees by pawls 6 carried by arms 45. A pawl is caused to engage a disc by energizing a corresponding solenoid 10 which releases a cam 8, whereupon a spring 11 urges the pawl into a notch 3b. The arms 45 swing 180 degrees anticlockwise and then return to the position shown. the discs 3 being located in the position to which they have been set by ball catches 12. If the solenoid is still energized, the pawl engages another notch in the disc 3 and turns the disc again; if the solenoid has been de-energized, the cam 8 has meanwhile returned to the position shown, (under gravity), and been locked by the core 9, so that the pawl 6 is rocked clear of the disc 3. Closing shed. By energizing all the solenoids and turning the arms 45 through 90 degrees, all the healds 20, irrespective of whether they were up or down, are brought to the middle of their stroke. Levelling healds. The height of the healds can be adjusted by a nut 35 which supports the dobby. Adjustment of the height of individual healds can be provided. at the bearings 17.
Patent GB-692526-A (GB)
Title: Improvements in or relating to arrangements for automatic amplitude regulation, especially dynamic regulation, in an electric transmission system
IPC: H03G7/02
Filed: 1951-05-24
Abstract: 692,526. Automatic volume control. KLANGFILM GES. May 24, 1951 [May 24, 1950], No. 12235/51. Class 40 (iv). In an automatic volume control arrangement a control voltage derived from the intelligence signal transmitted is fed to a regulating device which is normally balanced to give a zero indication and which on variation of the control voltage produces a regulating movement to re-balance the device, at the same time controlling the setting of an amplitude regulator in the transmission path under control, this regulator varying the level in accordance with a predetermined (preferably logarithmic) regulating curve in dependence upon the control voltage. As shown in Fig. 1, the-input of an amplifier 1 is tapped and fed through a manually adjustable regulator 4 to the automatic regulating system 5 which includes an auxiliary potential divider 6 and a control member 7. When a change in level occurs at the input of the amplifier 1 the control member responds and causes the potential divider 6 to be adjusted until the zero condition again obtains in member 7. The potential divider 6 drives the amplitude regulator 3 to adjust the level in the transmission system accordingly. The control member 7 may comprise a measuring instrument, preferably of the moving-coil type, coupled directly to the moving contacts of the potential divider 6 and the regulator 3. Alternatively the member 7 may be a polarized relay connecting up and opening (or reversing) an electric motor which drives the potential divider 6 and the regulator 3; or the motor may run continuously with the member 7 comprising clutches therefor. Such an arrangement is shown in Fig. 3 wherein the clutch consists of two ferromagnetic discs 10 rigidly coupled to the potential divider 6 and the regulator 3 which are of rotary form. At the periphery of the discs 10 a further disc 12 (with a magnetic return path in the form of a similar disc 13) is mounted and driven continuously at constant speed by motor 14. The control voltage at St is fed via the potential divider 6 the amplifier valve 17 and with valve 18 acting as a phase-changer the coils 15 and 16 surrounding the disc 12 normally carry equal and opposite currents to produce zero field. When the control voltage varies the current in either 15 or 16 becomes predominant and either the lower or upper disc 10 is driven so that the potential divider 6 is adjusted in one direction or the other until the original voltage is again fed to valve 17. The amplitude regulator 3 is at the same time adjusted accordingly. The resistance curves of the components 3 and 6 may be chosen to produce compression or expansion in the system, or to compress lower and higher amplitudes more than medium amplitudes as desired.