baber/WOPTO huggingface dataset:
Patent GB-346720-A (GB)
Title: Improvements in or relating to the braking of vehicles or the like
IPC: B60T1/06
Filed: 1929-10-07
Abstract: 346,720. Brakes. AKTIEBOLAGET SPONTAN, 2, Norrmalmstorg, Stockholm. Oct. 7, 1929, No. 30338. Convention date, Oct. 6, 1928. Void [Published under Sect. 91 of the Acts]. [Class 103 (i).] Energy-absorbing elements ; actuated by running axle.-The force couple set up by applying a brake on the transmission shaft of a vehicle is utilized to apply the front wheel brakes. For cooling, the transmission brake surface comprises separated annular steel plates subjected alternately to the action of the breaking elements and to air circulation set up by the movement of the surface. Mounted on the driving shaft 1 is a drum 12 comprising a cylindrical member 2 carrying radial arms 3 which support thin annular steel plates 4 separated by spacing pieces 5 and secured by rivets or bolts 7 passing through end-rings 6. Brake shoes 8 adapted to engage the drum are pivoted at 9 to a member 11 rotatably mounted on the shaft 1 by a ball-bearing ring 10. A rod 13 passes through one brake shoe and is connected by bolts 15 with a rod 33 passing loosely through the other brake shoe the separation of the shoes being adjustable by wing nuts 14. The brakes are normally retracted by springs 24 which may be attached to the vehicle frame 30 and are supplied by a pedal 16 acting through Bowden wire 17, 18 on a floating lever 21 connected to the rod 33 and one brake shoe by links 19, 20. As shown the springs 24 are connected to bell cranks 25 pivoted on the frame 30 and connected by rods 26, 29 and arm 27 to brakes on the front wheels, a spring 28 acting on the arm 27. When the brake shoes 8 are applied to the drum they are rotated against the action of the springs 24, 28 thus applying the front-wheel brakes. Owing to the rotation of the drum 12 cooling air is caused to circulate between the plates 4 by centrifugal action.
Patent GB-174451-A (GB)
Title: Improved method and apparatus for building concrete walls in situ
IPC: E04G17/12
Filed: 1920-10-29
Abstract: 174,451. Melzer, A. Oct. 29, 1920. Casting walls in situ.-In moulding concrete walls in situ course upon course, the shutters A, B are used in pairs one on the other and are secured in position by two-part adjustable cramps D, E, provided with clamping-screws d<3>, e<3>; the shutters may be further positioned by means of distance-pieces, which may be subsequently removed or left in position. After the tamping of a course, further shutters C are placed on the tops of the clamps and further clamps are then placed depending vertically from these shutters and the lower clamping screws are tightened on to the upper shutters B already in use. The lower clamps are then removed together with the shutters A, and the space between the shutters B, C is closed by turning the clamps about the clamping points on the shutters B so that the shutters C move downwards and endwise. For corners, a bar F secured to a shutter C is pivoted at f<1> to an angle shutter C<2>, Fig. 8, sufficient clearance being provided between the end of the bar and the shutter to allow pivoting of the shutters to clear the wall as shown in Fig. 4.
Patent GB-989071-A (GB)
Title: Method and apparatus for the continuous measurement of variations in the weight of asubstance, relative to temperature
Inventor: KOCH CLAUS VON
IPC: G01G7/04
Filed: 1961-08-25
Abstract: 989,071. Weighing electrically. O. GLEMSER. Aug. 25, 1961, No. 30645/61. Heading G1N. [Also in Division H3] The deflection of a balance beam indicating the weight variations of a substance undergoing heating varies capacitor controlling the frequency of an oscillator which frequency is converted into a direct current signal used to restore the balance and to indicate the change in weight. As shown, (Figs. 1, 2)the capacity of two capacitors 6, 7 is varied by the movement of a common plate 3 attached to one end of a balance beam 1, the other end of which carries a balance pan 2 passing into electric heating means 22. A permanent magnet 5 is suspended from the capacitor end of the balance beam 1 inside a coil 4. Capacitors 6, 7 control the frequency of an oscillator 8 which is located in a shielded housing together with a similar fixed oscillator 9 so as to reduce temperature differences. The oscillator outputs are fed through a mixer 10, to a frequency discriminator 11 whose output is amplified by a push-pull D.C. amplifier 12, having cathode follower output stages which supply the coil 4 with a direct current which is proportional to the change in weight of the substance and thus provides a balance restoring force, the magnitude of which is recorded by a recorder 13. The recorder 13 may be of the two co-ordinate type when the balance restoring direct current and the output from a thermo couple measuring the substance temperature form the respective co-ordinates thus obtaining a temperature/change in weight curve of the substance directly. The balance pan 2 is suspended below a concrete base 15 which retains the heat from the heating means 22 controlled by a program controller. An eddy current damping system comprising an aluminium core 17 and an electro magnet 18 limits the effects of external vibrations. The balance is accommodated in a gas tight housing 19 having extensions 20, 21 and a cooling trap 24. The housing may be under vacuum or supplied with protective gas through a pipe 23 and may be plastic coated if corrosive gases are to be employed.
Patent GB-371770-A (GB)
Title: Addition means and method for improving cement and cement mortar
Inventor: KIRCHNER DIPL-ING WALTER
IPC: C04B28/02
Filed: 1931-11-06
Abstract: Thiocyanic acid or one or more salts thereof is added to cement, mortar, or concrete to regulate the setting or hardening and to increase the density thereof.  Ammonium, calcium, potassium, barium, aluminium, iron, and chromium thiocyanates are specified; they may be used alone or in conjunction with other salts such as chlorides, nitrates, &c.  The additions may be made either to the dry cement or when mixing the concrete or mortar. According to examples, a Portland cement mixed with a 21 DEG  B<\>ae solution of calcium thiocyanate sets in 10-20 minutes.  If equal proportions of calcium and aluminium thiocyanates are used, setting takes place within 5 minutes and the temperature rises by 40 DEG  C.
Patent GB-449598-A (GB)
Title: Improvements in and relating to change speed gears
IPC: F16H3/12
Filed: 1934-12-27
Abstract: 449,598. Change - speed gearing. DAIMLER-BENZ AKT.-GES., Unterturkheim, Stuttgart, Germany. Dec. 27, 1934, No. 30899/35. Convention date, Dec. 27, 1933. Divided out of 449,540. [Class 80 (ii)] In change-speed gearing having three pairs of constant-mesh toothed gears d<1>, d<2> and el, e2 and f<1>, f<2>, the changes are effected by changing the engagement of two double-ended dog clutches g and h, the clutch teeth of the clutch g having bevelled end faces as described in Specification 298,186, [Class 80 (ii)], and the clutch teeth of the clutch h having square ends coacting with synchronizing means. There is preferably a quick-throw-over control for the clutch g which makes changes between two highest speeds. In the arrangement described, the double clutch h has a synchronizing device at one end acting frictionally with clutching effect, and a synchronizing device at the other end acting with a braking effect, all as described in Specification 449,540.
Patent GB-446968-A (GB)
Title: Manufacture of substituted nitro- and amino-chrysenes
Filed: 1934-10-29
Abstract: Nitro- and amino-chrysenes are made by nitrating a chrysene substituted in the 2-position but containing no protected amino group, and, if desired, reducing the mono nitro-chrysenes so formed. The products are dyestuff intermediates, particularly for the azo, oxazine and anthraquinone series.  In examples, 2-chlor-8-nitrochrysene, 2 - chlor - 8 - aminochrysene, 2-bromo-8-nitrochrysene, 2-bromo-8-aminochrysene, 2-cyano-8-nitrochrysene 2-cyano-8-amino-chrysene (made using excess of phenylhydrazine as reducing agent), 2-nitrochrysene-8-carboxylic acid, 2-aminochrysene-8-carboxylic acid, 2-acetoxy-8-nitro-chrysene, 2-hydroxy-8-amino-chrysene, 2-nitro-8-diethyl-sulphamidochrysene, 2 - amino - 8 - diethylsulphamidochrysene, 2 - nitro - chrysene - 8 - sulphonic acid, 2-amino-chrysene-8-sulphonic acid, 2-acetyl-8-nitro, 2-acetyl-8-amino-chrysene, 2-benzoyl-8-nitrochrysene, 2-benzoyl-8-aminochrysene, 8-nitro-chrysene-2-carboxylic acid methyl ester, 8-nitrochrysene-2-carboxylic acid ethyl ester, 2 : 8 - dinitrochrysene, 8 - nitro - 2 - methoxy - chrysene, 8 - amino - 2 - methoxy - chrysene, 8-nitro-2-ethoxychrysene and 8-amino-2-ethoxychrysene are made from the appropriate chrysenes. 2-Hydroxy-8-nitrochrysene is made by saponification of 2-acetoxy-8-nitro-chrysene.  2-Acetylamino-8-chlorochrysene is referred to.  Chrysenes substituted by alkyl and sulphone groups may also be used as starting materials.  In the Provisional Specification is described the formation of 2 - acetylamino - 8 - nitrochrysene from 2-acetylamino chrysene, its reduction to 2-acetylamino-8-aminochrysene, and the saponification of the latter to give 2 : 8-diaminochrysene.  2-Chloro- and 2-bromo-chrysene are made by treating chrysene with sulphuryl chloride or bromine in nitro-benzene.  2 - Cyanochrysene and chrysene - 2 - carboxylic acid.--2-Cyanochrysene is made by melting cuprous cyanide with 2-chlorochrysene, and on saponification yields chrysene-2-carboxylic acid.  2 - Hydroxy- and 2 - acetoxychrysene.--2-Acetoxychrysene is obtained by acetylating 2 - hydroxychrysene, obtainable by melting chrysene-2-sulphonic acid with potash.  Chrysene-2-sulphochloride and sulphonamides.--Chrysene - 2 - sulphochloride is made from chrysene - 2 - sulphonic acid and phosphorus pentachloride and yields with diethylamine, ammonia, methylamine, dimethylamine, mono or di-ethanolamine or butylamine the corresponding amides. Chrysene-2-sulphonic acid is made from chrysene and chlor-sulphonic acid in tetrachlorethane.  2-Acetyl-chrysene and 2-benzoyl-chrysene are made by condensing acetyl chloride or benzoyl chloride with chrysene in presence of aluminium chloride.  Chrysene-2-carboxylic acid methyl ester and ethyl ester are made by esterification of the acid.  2-Methoxy- and ethoxy-chrysenes are obtained by treating 2-hydroxy-chrysene with dimethyl or diethyl sulphate.  Dyes.--On treating 2 - hydroxy - 8 - aminochrysene with pyrolusite and sulphuric acid, a coloured quinonoid compound is formed.
Patent GB-641414-A (GB)
Title: Improvements in and relating to tube cleaning apparatus for boilers and the like
IPC: F28G3/16
Filed: 1946-10-18
Abstract: 641,414. Boiler &c. cleaners. LUMB, C. F., and DIAMOND BLOWER CO Ltd., Oct. 18, 1946. No. 31028. [Class 99(ii)] Scale is removed by projecting water or other liquid on to the heating surfaces from a nozzle 10 rotatable on the end of a tube 8 about an axis inclined to that of the tube, the axis of the orifice being inclined to the axis of rotation of the nozzle. The tube 8 is mounted in a casing 2 connected at 3 to a water supply and is movable axially into and out of operative position. A hand-crank 27 for rotating the tube 8 together with the nozzle is fixed to a sleeve 25 pinned to the tube, and a second handcrank 32 for rotating the nozzle independently or setting it to the desired angle is fixed to a shaft. 24 having a pin-and-slot connection 22, 23 with the nozzle, a spring- pressed pin 33 engaging one of a series of holes in a dial-plate 30 fixed to the crank 27.
Patent GB-1467863-A (GB)
Title: Apparatus for producing a heat-welded assembly
IPC: D04H3/14
Filed: 1974-07-12
Abstract: 1467863 Dielectric welding of thermoplastic films J PELLETIER 12 July 1974 [13 July 1973] 31098/74 Heading B5K [Also in Division D1] An apparatus for welding non-woven nets, films and coated fabrics comprises a pair of electrodes 1, 2, between which the material 3 to be welded is passed, at least electrode 2 being movable towards and away from the other electrode, a support plate 4 connected to movable electrode 2 by insulators 5 arranged in two parallel straight lines and a plurality of jacks 7 arranged in a third straight line substantially centrally between and parallel to said insulators 5, the longitudinal position of said insulators 5 being staggered relative to that of the jacks. In the preferred embodiment the electrodes 1, 2 are 2À5 m. long and the duralumin support plate 4 and plexiglass insulators 5 prevent the movable electrode 2 from sagging. One or more pilot jacks are placed at each end of the assembly to brake its rise and/or fall. The welding of a net comprising warp and weft yarns of 20% by weight viscose rayon and 80% by weight polyvinyl chloride is specified. As schematically illustrated in Fig. 4 a 27 megacycle generator 27 feeds electrodes 11, 12 via distributer 17. Phase shifter 18 containing inductive coils and/or capacitors which are cyclically varied by motor 20 causes a waveform to travel along electrodes 11, 12 at a frequency of 10 to 100 cycles/second determined by the motor. Phase shifter 19 produces a second waveform. The phase difference between the waveforms may be 30 or 180 degrees.
Patent GB-1067952-A (GB)
Title: Improvements in high frequency electrical distribution systems
IPC: H03H7/48
Filed: 1964-08-04
Abstract: 1,067,952. Transformers. H. KOLBE & H. KOHLER, [trading at BANS KOLBE & CO.]. Aug. 4, 1964 [Dec. 10, 1963; March 7, 1964], No. 31099/64. Heading H1T. [Also in Division H4] In an R.F. coupling device for supplying several like loads from a common source, a 1: 1 ratio transformer with a ferrite core 1 formed as a closed shell from two halves 1<SP>1</SP>, 1<SP>11</SP> is wound with a double conductor 2, which may be a coaxial cable, one end being taken to a terminal 5 and to earth and the other end to four terminals, two of which, 6, 6<SP>1</SP>, are connected to one conductor and the other two, 7,7<SP>1</SP>, to the other conductor. The supply is connected between terminal 5 and earth and the loads, each of which has the same impedance as that of the supply, to terminals 6, 6<SP>1</SP>, 7, 7<SP>1</SP> respectively and to earth. In this way, the joint impedance of the loads, i.e. two sets of two in parallel which are effectively put in series by the coupling transformer, is matched to the impedance of the supply (Fig. 3, not shown). In a second embodiment (Fig. 4, not shown) more than one load is paralleled on each terminal 6, 6<SP>1</SP>, 7, 7<SP>1</SP> but the joint impedance at each terminal is brought to the correct value, i.e. that of the supply, by a resistor in series with each load. In a third embodiment (Fig. 5, not shown) each terminal 6, 6<SP>1</SP>, 7, 7<SP>1</SP> is connected to a further 1: 1 transformer of the kind described above, thus multiplying the number of terminals for connection of loads by four, and this cascading may be continued further. The arrangements are stated to have broadband characteristics and to be suitable for operation over a range such as 150 kc/s. to 800 Mc/s.
Patent GB-284819-A (GB)
Title: Improvements in or relating to cigarette making machinery
IPC: A24C5/26
Filed: 1926-12-08
Abstract: 284,819. Molins, W. E. Dec. 8, 1926. Cigarette-making machines.-A heating-device for drying the seams in continuous-rod machines comprises a heating-element 1 having a series of teeth 1<a> extending into corresponding transverse slots 1<b> in the folder 11 of the rod-forming mechanism, so as to bear upon the overlapping edges of the cigarette paper. As shown, the element 1, which may be heated electrically, is mounted in a cylindrical casing 2 bolted to an arm 4 mounted upon a spindle 5 adjusted upon a standard 6 by means of an adjusting-screw 7. A second heater may be arranged in line with the first, a projection 13, Fig 3, on the spindle of the second heater being in engagement with a pin 15 on the spindle of the first heater, so that movement of the second heater moves the first heater out of engagement with the cigarette rod. In a modification, the heating-element of the first heater comprises a series of spaced metallic discs extending into the slots 1<b>, and the discs may be rotated to sweep over the overlapping edges of the paper.
Patent GB-649584-A (GB)
Title: Improvements in and relating to the preparation of trialkyl phosphates
IPC: C07F9/08
Filed: 1947-11-24
Abstract: Neutral esters of phosphoric acid containing alkyl groups or halogenated alkyl groups having a molecular weight within the range 40-120 are prepared by reacting phosphorus pentoxide with an ether free from hydroxyl groups and containing one or more alkyl groups or halogenated alkyl groups having a molecular weight within the range 40-120 at 45-180 DEG  C., in an atmosphere of an olefine having in the molecule the same number of carbon atoms as the said alkyl group or groups, preferably for a period of not less than five hours and using an excess of at least twice preferably at least eight times the theoretical amount of ether. The reaction may be carried out in the presence or absence of esterification catalysts such as ferric chloride, phosphoric acid, sulphuric acid and iodine.  The reaction is suitably carried out in an autoclave under autogenic pressure.  A reaction temperature of 140-180 DEG  C. is desirable.  Trialkyl phosphates which may be prepared include propyl, butyl amyl, 2-ethyl hexyl and trichloroethyl derivatives.  The trialkyl phosphate may be isolated by fractional distillation and the residue from the distillation may be added to fresh reaction mixture or may be reacted with further quantities of ether.  In examples (1) di-n-propyl ether is reacted with phosphorus pentoxide in an atmosphere of propylene to give the trialkyl phosphate; (2) di-isopropyl ether is used in place of di-n-propyl ether in the process of (1).  A residue of the corresponding di-propyl metaphosphate is formed in examples (1) and (2) which may be reacted with further ether to give a further amount of the trialkyl phosphate.  Specification 645,134 is referred to.
Patent GB-1433308-A (GB)
Title: Acetamidophenyl esters of salicylic acid derivatives
IPC: C07C231/00
Filed: 1974-07-15
Abstract: 1433308 Para-acetamidophenol esters of salicyclic acid derivatives MERCK & CO Inc 15 July 1974 [20 July 1973] 31159/74 Heading C2C Novel compounds, suitable as anti-inflammatory, antipyretic and analgesic agents have the formula where Ar is phenyl or pyrrolyl (preferably 1-pyrrolyl); R<SP>1</SP> is hydrogen or C 1-5  alkyl, R is chloro or fluoro; x is 0-5; and R<SP>4</SP> is hydrogen, benzyl, acetyl or propionyl. The compounds in which R<SP>4</SP> is benzyl, acetyl or propionyl, are made by esterifying a compound of formula where R<SP>42</SP> is benzyl, acetyl or propionyl with a compound of formula The compound in which R<SP>4</SP> is hydrogen are made by hydrogenolysis of the compounds in which R<SP>4</SP> is benzyl in the presence of Pd or Pt. Esterification is preferably performed in the presence of dicyclohexyl carbodiimide and an inert solvent. The compounds are made into pharmaceutical preparations with the usual additives.
Patent GB-1510365-A (GB)
Title: Film thermoelement
IPC: H01L35/08
Filed: 1975-07-25
Abstract: 1510365 Thermoelectric devices NVKOLOMOETS Z M DASHEVSKY V I GRANOVSKY I A SHMIDT and D M GELFGAT 25 July 1975 31164/75 Heading H1K A thermoelectric device comprises seriesconnected limbs each consisting of a P or N-type semiconductor film 1 in thermal and electrical contact with a heat sink 3 at one face and a heat source 2 at the other via thermally conductive strips 4, 5, e.g. of aluminium, copper or silver, laterally spaced from one another by a distance greater than the strip width, whereby heat flows in the plane of the film. Heat loss may be reduced by sealing off the sink-source space by end plates and fitting it with argon.
Patent GB-602567-A (GB)
Title: Improvements in and relating to centrifugal machines
Inventor: RIEL PIETER VAN
IPC: B04B15/06
Filed: 1945-11-20
Abstract: 602,567. Centrifugal machines. NAAMLOOZE VENNOOTSCHAP MACHINEFABRIEK REINEVELD. Nov. 20, 1945, No. 31180. Convention date, July 30, 1940. [Class 23] A centrifugal machine having a drum 4 provided with one or more passages 5 for the circulation of heating or cooling liquid under the action of centrifugal force, is characterised by a jacketed top 14 and jacketed bottom 8 both communicating with the passages 5, the jacketed top being provided with an upturned discharge rim 17 spaced at a greater distance from the axis of the machine than is the outlet of the stationary skimming and discharge pipe 9 which opens into the bottom jacket 8.
Patent GB-970486-A (GB)
Title: New steroid compounds and processes for their preparation
IPC: C07J5/00
Filed: 1961-08-30
Abstract: The invention comprises 11b , 21-dihydroxy-16a -methylpregn-4-ene-3, 20-dione and its esters having the formula: <FORM:0970486/C1/1> where R represents either a hydrogen atom or an acyl radical derived from an organic carboxylic acid and processes for the preparation thereof in which 21-hydroxy-16a -methylpregn-4-ene-3, 11, 20-trione is semicarbazonized so as to block the 3- and 20-keto groups yielding the 3, 20-di-semicarbazone of 21-hydroxy-16a -methylpregn-4-ene-3, 11, 20-trione which is then reduced e.g. with potassium borohydride to yield the 3, 20-disemicarbazone of 11b , 21-dihydroxy - 16a -methylpregn-4-ene-3, 20-dione and the latter desemicarbazonized e.g. with pyruvic acid to liberate the blocked 3- and 20-keto groups thus yielding 11b , 21-dihydroxy-16a -methylpregn-4-ene-3, 20-dione. Subsequently the hydroxy group at 21-position may be esterified. Specification 970,483 is referred to.
Patent GB-653231-A (GB)
Title: Improvements in or relating to magnetrons
IPC: H01J7/26
Filed: 1948-12-02
Abstract: 653,231. Magnetrons. M-O VALVE CO., Ltd., BROOK, F., and KETTLEWELL, E. Dec. 2,1948, No. 31289. [Class 39 (i)] [Also in Group XL (b)]  In a multi-resonator magnetron in which the ends of the anode block 1 are closed by iron polepieces 4, 41 hard-soldered thereto, and the indirectly heated cathode 7 is carried by one or more thermally and preferably also electrically conductive supports 6, 17 passing through a hole in the polepiece 4 and electrically insulated therefrom, at least one cathode support projects from the pole-piece 4 into a liquid-filled enclosure 18 attached to the magnetron. The enclosure 18, which is a glass boot filled with oil, serves to absorb heat from the cathode conducted along its supports 6, 17. Circulation of the oil by convection may be relied upon, or the enclosure may be artificially cooled by passing cooling medium through pipes extending through the enclosure or by circulating the oil filling of the enclosure and cooling it outside the enclosure. The copper tube 6 and tungsten rod 17 also serve as leads for the indirectly-heated cathode 7 consisting of a coated nickel tube enclosing a heater 15; the cathode 7 is gold brazed to the copper tube 6. The vacuum is maintained by glass members 10, 12 and flanged copper discs 8, 13, the disc 13 being sealed to the polepiece 4. The lead 6 is attached to copper disc 8 and lead 17 is sealed through glass cap 10. External cathode leads 22, 23 pass through bushes 21 in the boot 18, which is bolted to copper disc 13 with the interposition of a fabric washer 20. An orifice for filling the boot 18 with oil is closed by a plug 24. The output of the device is taken from one of the resonators via an aperture in the resonator wall and a flared wave-guide section 25. The vacuum is maintained by copper members 26, 28 and glass disc 27 sealed to member 26. Metal cylinder 29 can be joined at its open end to an output wave-guide. The Provisional Specification refers to a construction in which the tubular cathode lead is sealed to one end of a glass tube sealed at its other end to a polepiece, and in which the heater lead is sealed through a glass bead closing the outer end of the tubular cathode lead. The glass boot is bolted directly to the polepiece.