baber/WOPTO huggingface dataset:
Patent GB-815296-A (GB)
Title: Improvements relating to semi-conductor electrical waveform generators
Inventor: DAWSON EDGAR FREDERICK
IPC: H03D7/12
Filed: 1955-06-14
Abstract: 815,296. Semi-conductor oscillator circuits. BRITISH THOMSON-HOUSTON CO. Ltd. June 5, 1956 [June 14, 1955], No. 17132/55. Class 40 (6). A waveform generator comprises a pair of double base diodes TD1, TD2 connected in parallel across a D.C. supply and having their trigger electrodes coupled through a capacitor C, the arrangement being such that the diodes become conductive alternately causing the capacitor to charge alternately in each direction. Assuming diode TD1 is conducting, the capacitor will charge through the inverse resistance of TD2 until the trigger electrode J2 becomes sufficiently positive to cause diode TD2 to conduct. The capacitor will then discharge rendering diode TD1 non-conductive and commence to charge in the opposite direction. A triangular wave is accordingly available across the capacitor and recurrent spaced voltage sweeps are available between each side of the capacitor and earth. A pulse waveform may be obtained from resistors R3 and R4 in the base circuit. Resistors R1 and R2 may be provided to control the charging time of the capacitor and to balance small differences in the characteristics of the diodes. By adjustment of the values of R 1 and R2 the operation of the circuit may be rendered asymmetrical. Specification 786,876 is referred to.
Patent GB-171584-A (GB)
Abstract: 171,584. British Thomson - - Houston Co., Ltd., (General Electric Co.). Oct. 8, 1920. Blades &c.-A turbine blade is secured to the rotor 5 by a projection 10 on the rotor flange 7 thereby bringing the blade into a radial position, its leg 12 being in the position shown in dotted lines in Fig. 1. The leg 12 is then staked or driven into recesses 8, 9 by a tool which for emergency repairs may be inserted at a high angle between adjacent rings or blades. In a modification, Fig. 3, after the blade 11<a> has been hooked into position the material at the bottom of a hole 16 in the leg 12<a> is driven down into a recess 9<a> in the rotor rim.
Patent GB-144492-A (GB)
Title: A machine for the manufacture of building blocks, bricks and similar articles
IPC: B28B5/08
Filed: 1919-07-09
Abstract: 144,492. Stephenson, J. July 9, 1919. Rotary-mould-table machines. - In a rotarymould-table machine for moulding blocks &c. wherein the material is compressed within the moulds 6 of an hydraulic ram 9, the moulded 'blocks are delivered from the moulds by a stripper 13 operated from the ram through levers 20, 15 arranged as shown. The mould is held down during delivery by a frame 24. The table 5 may be rotated by hand or power and is held, during pressing &c., by a locking-bolt 22 engaging holes 23. Specification 14000/03 is referred to.
Patent GB-1404503-A (GB)
Title: Well points
IPC: E02D19/10
Filed: 1972-04-14
Abstract: 1404503 Wells &c WILLIAM R SELWOOD LTD 16 July 1973 [14 April 1972] 17205/72 Heading E1F [Also in Division F2] A well point, particularly for use where a number of well points are connected to a common suction pipe, comprises a valve element 25 having a rolling engagement with a surface about an inlet 20 leading to the suction pipe, and a sensing means (a float) 28 connected to the valve to close the inlet if the level of the ground water falls sufficiently. Inlets 20 are formed in a tube 19 having a non-return valve 35. Valve elements which are each fixed to a skirt 32 on the float and to the tube are respectively shown in the open and closed positions on the left hand and the right hand side of the drawing.
Patent GB-1260371-A (GB)
Title: Conditioning bread dough
Inventor: NEU GERALD DAVERN
IPC: A21D2/14
Filed: 1969-04-02
Abstract: 1,260,371. Bread. EASTMAN KODAK CO. 2 April, 1969 [5 April 1968], No. 17254/69. Heading A2B. A method of making bread comprises incorporating into the baking mix a dough conditioning amount of at least one calcium salt of a fatty acid having 14-20 carbon atoms per molecule and a monoglyceride emulsifier. The mix may comprise a mixture of calcium salts of myristic, palmitic, margaric, stearic and arichidic acids. The emulsifier may be a mixture of fatty acid (e.g. stearic acid) monoesters of glycerol and 1,2 propane diol. The amount of calcium salt may be up to 10 ozs. per 100 lbs. flour.
Patent GB-518915-A (GB)
Title: Improvements in or relating to the manufacture of malonic and cyanoacetic esters
Filed: 1938-06-10
Abstract: 518,915. Malonic and cyanoacetic esters. TENNANT, W. J. (Sharp & Dohme, Inc.). June 10, 1938, No. 17338. [Class 2 (iii)] A 1- Alkenyl malonic or cyanoacetic esters are made by reacting alkylidene (other than ethylidene) malonic or cyanoacetic esters with an alkylating agent comprising an alkyl or aralkyl salt in the presence of an isomerization agent, consisting of an alkali or alkaline earth metal, or alkali or alkaline earth metal salt of a substance having an acidity weaker than that of the ester produced, e.g. an alkali metal amide such as sodamide, or an alkoxide such as sodium methoxide, ethoxide or isopropoxide. The parent alkylidene esters may be made by condensing an aldehyde or ketone with a malonic or cyanoacetic ester in an acid solvent such as acetic acid with removal of water during the reaction. In examples : (1) 1-npropyl-A 1-butenyl-ethyl-cyanoacetic methyl ester is prepared from 1-n-propyl-butylidenecyanoacetic methyl ester and diethylsulphate in presence of sodium ethoxide ; (2) 1-n-propyl- #1-butenyl-allyl-cyanoacetic methyl ester is made from 1-n-propyl-butylidene cyanoacetic methyl ester and allyl bromide in presence of sodium methoxide ; (3) allyl isopropenyl cyanoacetic ethyl ester is made from the isopropylidene ester and allyl bromide in the presence of sodium ethoxide ; (4) mixed ethyl and isopropyl esters of 1-methyl-# 1-butenyl-ethyl- and propylcyanoacetic acid are made by reacting ethyl-1- methyl-butylidene cyanoacetate with diethyl sulphate or n-propyl bromide in a solution of sodium in isopropyl alcohol ; (5) #1-butenyl ethyl malonic methyl ester is obtained from n-butylidene malonic diethyl ester and diethylsulphate with the aid of sodium in xylene ; and (6) isopropenyl-diphenylmethyl malonic diethyl ester is made from isopropylidene malonic diethyl ester and diphenylmethyl bromide. Other #1-alkenyl groups which may be introduced are #1-pentenyl,#1-hexenyl,#1-33 butadienyl, 1:3-dimethyl-#1-7-octadienyl (citronellenyl), 1-methyl-,#1-propenyl, and 1-ethyl-#1 propenyl. The alkyl and aralkyl groups include unsaturated groups such as crotyl, citronellyl and cinnamyl, and cycloalkyl groups, such as cyclopentyl and cyclohexyl. The products may be used for the production of #1-alkenyl barbituric and thiobarbituric acids by condensation with urea or thiourea.
Patent GB-332011-A (GB)
Title: Improvements in or relating to dynamo-electric machines
IPC: H02K17/14
Filed: 1929-06-06
Abstract: 332,011. General Electric Co., Ltd., Orsettich, R., and Kahn, M. June 6, 1929. Motors, controlling; alternating-current induction motors.-In a wound rotor induction motor having its primary winding adapted to give different pole numbers, a switching device is provided for simplifying the change of rotor connections required for different conditions of operation, such as for different supply frequencies. With this device one set of slip-rings is sufficient. In the form shown, the slip-rings 3, 4, 5 are connected to terminals 7, 8, 9 which may be connected by links to terminals 10, 11, 12 respectively, thus giving a delta connection for one frequency on the three-phase rotor 2, or to terminals 16, 17, 18 respectively, thus connecting the slip-rings to the mid-points 20, 21, 22 of the winding for the other frequency. Preferably the slip-rings are arranged on the side of a bearing remote from the rotor, and the switching device is located at or near the adjacent end of the shaft. Other types of switching device may be used.
Patent GB-155796-A (GB)
Title: Improvements in and relating to magnetos
IPC: H02K21/32
Filed: 1920-06-28
Abstract: 155,796. Remy Electric Co., (Assignees of Conklin, O. F., and Vanneman, J. A.). Dec. 17, 1919, [Convention date]. Magneto-electric machines.-In ignition mag. netos for internal-combustion engines, the distributor is mounted on a vertical shaft driven from the armature shaft, the distributor housing, rotatably supported by a gear-housing carried by the armature end casing, and detail improvements are made to facilitate inspection and adjustment. The armature housing 20 has end walls 25, 31, the latter having an annular flange 50 and groove 51 into which the cover 52 snugly fits so as to be readily removed only by means of a special tool, Fig. 2, placed in the aperture 60. The upper housing 22 carries the earthing contact-brush 75 and the high and low tension collecting brushes 83, 94. Fig. 5 shows the distributor casing 102 and the bearing 100 for the timing elements mounted on the shaft 103 and connected by gearing 105, 57 to the armature shaft 42. Fig. 6 shows the construction of the contact-breaker operated by the cam 110 on the shaft 103, adjustment being provided by the slot 118. The condenser 141 is located in the recess, as shown, and the distributor rotor 150, conductor 151, and brush 152 are carried on the shaft 103. The distributor head 156 has a track 155 constructed preferably of a phenol condensation product with metallic contacts 157, leads being connected as shown in Fig. 5<A>. The lever 180 secured to the distributor casing 102 is provided to adjust the timing.
Patent GB-1171087-A (GB)
Title: Hydraulic Flow Regulators for Hydropneumatic Suspension Systems.
IPC: B60G17/056
Filed: 1968-04-11
Abstract: 1,171,087. Hydropneumatic suspensions. DAIMLER-BENZ A.G. 11 April, 1968 [14 April, 1967], No. 17585/68. Heading B7D. An hydraulic flow regulator for a vehicle hydropneumatic suspension system is provided with connections 9, 10, 11 for a pump, oil chamber of a spring cylinder and a reservoir respectively, the connections being alternately interconnected by the regulator, an excess pressure valve 15 being disposed between the connections 9, 10 and a rotary slide valve 16 being disposed between the connections 9 and 11 and a valve 21, which is operated by a control edge 20 of the rotary valve 16, being disposed between the connections 10 and 11. In use, when a vehicle load is increased the valve 16 is rotated clockwise cutting off communication between the connections 9, 11 through passages 13, 12 and a recess 18 of the valve. The pump output pressure increases until it exceeds the pressure of the spring cylinder when the excess pressure valve 15 opens permitting the pressure fluid to flow to the spring cylinder until the normal vehicle height is attained when the rotary valve 16 is returned to the position shown by the spindle 22. To ensure a quick valve action the valve 16 is axially movable and there is a resilient connection between the valve 16 and the spindle 22 or in the linkage between the vehicle axle and the valve. Thus when the valve is rotated clockwise the raised pump output pressure acts on the right-hand face of the valve 16 (Fig. 2) providing frictional resistance to its rotation. When, as the valve is returned towards its normal position, the recess 18 begins to uncover the passages 12 and 13, the pump output passes to the reservoir, reducing its pressure and hence the frictional force on the valve 16. The resilient connection then opens the valve 16 completely. When the vehicle load is reduced the control edge 20 of the valve 16 opens the valve 21 to permit fluid to flow from the spring cylinder to the reservoir.
Patent GB-800741-A (GB)
Title: Improvements relating to door holders
Inventor: WALKER ALAN JOHN
IPC: E05C17/44
Filed: 1955-06-18
Abstract: 800,741. Door holders. SHOWELL & SONS, Ltd., E. Sept. 17, 1956 [June 18, 1955], No. 17652/55. Class 65(1) A door holder comprises a fixing plate 7 secured to the door and a keeper 5 of channel section coupled to lugs 7a, 7b on the plate by links 6 which are freely pivoted on pins 8, 11 on the keeper and pins 10, 12 in the lugs. A tension spring 13 interconnecting the pins 8, 12 urges the keeper downwards to bring lug 5d into frictional contact with the floor, and serves to retain the keeper in the raised, inoperative position.
Patent GB-184006-A (GB)
Title: Improvements in trap doors for poultry nest pens and the like
IPC: A01K31/16
Filed: 1921-06-29
Abstract: 184,006. Insley, W. P. June 29, 1921. Poultry coops. - A trap door for poultry nest pens &c. comprises a drop slide d carrying a catch f adjustable in a slot e and coacting with a key j pivoted at k so that it tends to swing out of the path of the catch f. In the set position the key j engages a pin l and supports the slide d, but when a hen lifts the slide the key j is released and allows the slide to fall. The grooves b for the slide terminate a little above the bottom of the doorway.
Patent GB-232085-A (GB)
Title: Improvements in grates for gas-producers, furnaces and the like
IPC: C10J3/34
Filed: 1924-07-24
Abstract: 232,085. Sauvageot, J. July 24, 1924. Grates.-In a grate for gas producers, furnaces and the like, hollow fire-bars are formed with plain portions and projecting portions and are arranged so as to be rotated in their frame 3 with the projections inter-engaging on rotation; air under pressure with or without steam is supplied to the interiors 1 of the hollow fire-bars and passes out through holes 2 in the bars preferably arranged in a plain cylindrical portion of the bar opposite to the portion formed with the projections. The fire-bars are oscillated slightly to vary the position of the air-holes 2 and are periodically rotated to remove the clinker; to this end the bars are operated together by worm gearing 6. The frame may be provided with wheels 4 running on rails.
Patent GB-704386-A (GB)
Title: Improvements in sliding hearths for tunnel surfaces
IPC: F27D1/00
Filed: 1950-07-17
Abstract: 704,386. Tunnel kilns. SOC. DES ETABLISSEMENTS R. AMAND & CIE. July 17. 1950 [Sept. 3, 1949], No. 17808/50. Class 51 (2) A travelling hearth for a tunnel kiln comorises sets of superposed si'icon carbide blocks 1, 2 and 3, each row of the lower course consisting of two end blocks 1 and three intermediate blocks 2 interlocked by mortise and tenon joints as shown with identical blocks 3 forming the rows of the upper course.
Patent GB-674746-A (GB)
Title: Travelling band printing machine giving a plurality of impressions
IPC: B41F17/00
Filed: 1949-07-06
Abstract: 674,746. Printing -machines. SEMPERIT OSTERREICHISCH-AMERIKANISCHE GUMMIWERKE AKT.-GES. July 6,1949 [Aug. 14, 1948], No. 17815/49. Class 100 (ii). In a printing-machine for concurrent printing on each side of a plurality of paper strips by means of flexible elastic printing blocks carried on endless bands, a plurality of endless bands run over guide rollers and serve as both make-ready and transport bands, at least two of which are located on each side of two adjacently disposed printing block carriers so that a guide roller for each make-ready and transport band stands in contact with the appropriate block carrier outside its curved section of travel and acts as an impression roller for the paper strip carried on the make-ready and transport band. Paper strips from supply rolls 9 are first led over the transport bands 5 to the printing blocks 4 on the block carrier 1, where printing on the front side is effected. The strips then pass over transport bands 10 to the blocks on carrier 11, where printing on the reverse side is effected, and thence to folding means 12 and to storage. A steel band inking means 8 for the blocks is provided between each two rollers 6 of the bands 5, 10. The peripheral speeds of the two groups of travelling bands, 1, 11 and 5, 10, are maintained in agreement by synchronising means. Make-ready arrangements.-The transport bands 5, 10 have supports in the form of thin paper sections at the relevant positions to act as overlays. Specification 640,058 is referred to.
Patent GB-1455392-A (GB)
Title: Data transmission systems
IPC: H03K9/06
Filed: 1974-04-25
Abstract: 1455392 Frequency demodulation SIEMENS AG 25 April 1974 [30 April 1973] 18048/74 Heading H3A In a modulator for a FSK signal B1, B2 of the type in which a counter Z counts pulses from a clock generator GEN for periods determined by first and second flanks of pulses of the signal to be demodulated, the counter reaches a maximum count and is reset a number of times during a count period; the digital output of the counter is connected to a digital/analogue converter DIG/A by gates G1, G2, G3 opened at the second flank; and the output of the converter is connected via a lowpass filter TP to a threshold stage ScH. The maximum count of the counter is selected such that the residual count at the arrival of the second flank differs for the different frequencies to be detected, so that the resulting analogue signal will have a value dependent on the input frequency. The circuit of Fig. 3 operates in one half cycle of the input only, but in an alternative form the units preceding the filter may be duplicated to give operation on both half cycles, Fig. 5 (not shown).
Patent GB-1127400-A (GB)
Title: Process for improving the bonding property of fluorinated and fluorochlorinated polymers
IPC: C08J7/12
Filed: 1967-04-20
Abstract: 1,127,400. Polymers of fluorinated and fluorochlorinated polymers. FARBWERKE HOECHST A.G. 20 April, 1967 [20 April, 1966], No. 18144/67. Heading C3P. Polymers of fluorinated or fluorochlorinated olefins treated with a solution of at least one alkali metal in a phosphoric acid tris-dialkylamide having the formula in which each R represents a straight chain or a branched chain alkyl group containing 1 to 4 carbon atoms. The treatment improves the bonding property of the polymers. The solution may also comprise a hydrocarbon, e.g. naphthalene, anthracene, phenanthrene, toluene, diphenyl, vinyl cyclohexene, butadiene, cyclododecatriene, styrene or propylene. Preferred alkali metals are sodium, potassium, lithium and alloys. The polymer may. be a polymer of tetrafluoroethylene, vinylidene fluoride, chlorotrifluoroethylene, 1,2-difluoro-1,2-dichloroethylene, 1,1 - difluoro - 2 - chloroethylene, vinyl fluoride, 1-fluoro-1-chloroethylene or perfluoropropylene; or a tetrafluoroethylene/perfluoropropylene or perfluoropropylene/vinylidene fluoride copolymer. In examples: (1) polytetrafluoroethylene is treated with phosphoric acid tris-dimethylamide solutions of sodium/potassium alloy optionally containing naphthalene, anthracene, phenanthrene, diphenyl, toluene, butadiene, styrene, cyclohexene, dicyclopentadiene or triphenyl methane; and (2) polychlorotrifluoroethylene is treated with a similar solution containing naphthalene.
Patent GB-1432915-A (GB)
Title: Vacuum control assemblies
IPC: F02P5/10
Filed: 1974-04-25
Abstract: 1432915 Timing ignition GENERAL MOTORS CORP 25 April 1974 [3 May 1973] 18154/74 Heading F1B To ensure accuracy in the initiation of ignition spark advance when engine vacuum reaches a predetermined value, the breaker plate actuating rod 20 attached to the usual diaphragm 12 has its  opposite bent end 22 passing through a slot 31 in a range plate 30 attached, e.g. by spot welding, to the unit fixing bracket 25 and initially positioned while the vacuum is maintained so that the end 22 abuts one end 31a of the slot at the predetermined value. The opposite end 31 b of the slot limits the maximum vacuum advance.
Patent GB-110657-A (GB)
Title: Improvements in Internal Combustion Engines.
Inventor: GARNER HENRY
IPC: F02D15/04
Filed: 1916-12-22
Abstract: 110,657. Garner, H., and Parker, W. J. Dec. 22, 1916. Cylinders, construction of.-To avoid knocking at low speeds when heavy oil is used in engines designed to use light oil, the effective clearance is automatically adjusted according to the piston speed by providing the cylinder with a small clearance chamber 1 which is separated from the combustion chamber by a perforated diaphragm 4. The charge, being compressed, has more time to escape through the hole 5 at low speeds and the final compression pressure is thereby reduced. The diaphragm has a recess 9 and, by its inversion, the relative volumes of the chamber 1 and the combustion chamber may be altered.
Patent GB-854775-A (GB)
Title: Improvements relating to fluid speed indicators
Inventor: LOBELLE MARCEL JULES ODILON
IPC: G01P5/07
Filed: 1958-06-09
Abstract: 854,775. Fluid flow meters. M.L. AVIATION CO. Ltd. May 21, 1959 [June 9, 1958], No. 18370/58. Class 40 (1). [Also in Group XXXV] In a fluid-flow meter in which an impeller drives an A.C. electric generator the blades of the impeller are set at various angles in order that the fluid flow-speed of rotation characteristic shall compensate for a non-linear speed of rotation-electrical output characteristic and give an overall characteristic which is linear over a wide range. In the impeller shown in Fig. 2 the rotor has 24 blades, each quadrant having one blade with an angle of incidence relative to the air flow of - 11 degrees followed by two blades having 23 degrees, a single blade with 10 degrees and 2 further blades having an angle of incidence of 23 degrees.
Patent GB-857175-A (GB)
Title: New explosive compositions and their production
IPC: C06B25/32
Filed: 1959-05-29
Abstract: 857,175. Explosive compositions. DU PONT DE NEMOURS & CO., E. I. May 29, 1959 [Sept. 25, 1958], No. 18370/59. Class 9(2). An explosive composition capable of being formed into self-supporting structures comprises at least 44% by weight of pentaerythritol tetranitrate whose average largest dimension is between 0À1 and 2 microns, the largest dimension of all the particles being between 0À1 and 10 microns, 6À5 to 14% by weight of soluble nitrocellulose having an average degree of polymerisation of 2,000 to 3,000, and 15-35% by weight of an essentially non-volatile simple nitrocellulose plasticizer which is mutually insoluble with water, chemically inert to pentaerythritol tetranitrate and essentially a non-solvent for said pentaerythritol tetranitrate. Dynamitegrade nitrocellulose having a nitrogen content of 12À0 to 12À6% is the preferred nitrocellulose and the plasticizer may be acetyl tributyl citrate, dibutyl phthalate, tributyl phosphate, diethyl phthalate, diesolbutyl phthalate, diamyl phthalate, dihexyl phthalate, dioctyl phthalate dilauryl phthalate, benzyl butyl phthalate, diallyl phthalate triphenyl phosphate, or tricresyl phosphate. Dinitrotoluene, trinitrotoluene, dinitrobenzene, or trinitrobenzene may also be added. The composition may be sheeted and formed into sleeves to be used in the joining of metallic articles as described in Specification 564,211. Specification 765,305 also is referred to.