baber/WOPTO huggingface dataset:
Patent GB-720660-A (GB)
Title: Instrument for testing the hardness of materials
IPC: G01N3/42
Filed: 1953-02-03
Abstract: 720,660. Testing hardness of materials. MACDOUGALL, D. Feb. 3, 1953. No. 3038/53. Class 106 (2). An instrument for testing the hardness of materials comprises a liquid-filled cylinder 10 having a shank extension 11 for enabling the instrument to be used in a conventional drill stand, a piston 12 in the cylinder 10, the piston 12 being attached to a rod 15, carrying an indenter 19, calibrated micrometer screw means for applying pressure to the liquid within the cylinder 10, and a pressure gauge 21 connected to the cylinder 10. The shank extension 11 is tapered and the indenter 19 may be a diamond, a steel ball, or if rubber is being tested, a member with a flat circular end. The cylinder 10 may be filled with lubricating oil or glycerine. The micrometer means 29 operates a plunger 23.
Patent GB-949891-A (GB)
Title: Method for polymerizing olefin oxides
IPC: C08G65/26
Filed: 1962-01-26
Abstract: Metal phosphates and phosphites of varying composition within the general formula HwMxPOy, where M is a metal or metal oxide group, w is less than 3, x is greater than O but less than 3 and y is 2 to 4, are prepared by reacting phosphoric or phosphorous acid or a phosphate or phosphite with a metallic compound such as a halide, oxyhalide, oxide, nitrate or sulphate.  Thus, titanium phosphate and zirconium pyrophosphate (ZrP2O7) may be prepared from the metal halide or oxyhalide wi-h a water-soluble phosphate or phosphite; vanadyl orthophosphate, zirconyl pyrophosphate ((Zro)2P2O7) and chromium metaphosphate from the metal oxide and phosphoric acid; the phosphates of manganese, thorium and uranium from the nitrate and phosphoric acid or phosphate; and chromium phosphate from chromium sulphate or alum and a phosphate. The compounds, which are used as catalysts in the polymerization of olefin oxides (see Division C3), may be calcined at temperatures of 100 DEG  to 1500 DEG C.ALSO:Olefine oxides are polymerized in the presence of metal phosphates or metal phosphites.  The metal phosphates or phosphites have the general formula HwMxPOy where M is a metal, or an oxygen containing metal radical, W=O-3, X=O-3 and y=2-4.  The preferred metals are the transition metals of Groups IV-VIII. Also included are compounds prepared by reaction of phosphoric acid, phosphorous acid, a phosphate or a phosphite with a metallic compound, such as a halide, oxyhalide, oxide, nitrate or sulphate, even if their chemical composition is not known. The catalyst is preferably used in the dry state. The polymerization may be at a temperature of 0-170 DEG C. The catalyst may be prepared on a carrier such as silica, alumina, or silica-alumina, or may be calcined to a temperature of 100-1500 DEG C.  The calcining modifies the properties of the catalyst towards polymerization.  Olefine oxides specified are ethylene oxide, propylene oxide, epichlorohydrin, styrene oxide, and ones having up to 9 carbon atoms. In the examples, many different types of polyethylene oxides are formed, varying from greasy to resinous, using (1) titanium phosphate; and the calcined phosphates of (2) titanium; (3) sodium; (4) ferrous; (5) (6) (8) (9) (13) and (14) Zirconium; (7) vanadium; (10) chromium; (11) manganese and (12) calcium.
Patent GB-194096-A (GB)
Title: Improvements in or connected with capstans and the like
IPC: B63B21/16
Filed: 1922-02-02
Abstract: 194,096. Spence, W. L. Feb. 2, 1922. Baths and reservoirs.-A capstan head or winding drum B is formed with a depending cylindrical extension C which forms a bearing fit with the interior of a casing A forming an oil bath, and also is dowelled to a thrust ring E which bears against the bottom of the casing. The capstan head encloses the motor, which is mounted on a platform F supported in the casing and drives the extension C through double bevel gear H. The head may also be fitted with an outer flange D forming a rope drum. The lower end G<1> of the motor shaft may be arranged as described in Specification 152,767, [Class 110 (i), Centrifugal and screw fans &c.], to form a combined oil pump and thrust bearing. In a modification a central externally driven shaft, projecting upwardly through the base, is geared to the extension C by a balanced spur train.
Patent GB-591721-A (GB)
Title: Suspension polymerization
IPC: C08F2/18
Filed: 1945-02-07
Abstract: Water-insoluble monomers having a single >C=C< group are polymerized alone or together in aqueous media in the presence of a hydrous complex magnesium silicate, which swells in water and forms a gel therewith.  Monomers specified are vinyl chloride, vinyl acetate, styrene, ethyl acrylate, methyl, octyl, and benzyl methacrylates, methacrylonitrile, diethylacrylamide and acrylamide, also diallyl maleate and dimethyl maleate as comonomers.  Plasticisers, resins, colouring matters, methanol, benzoyl peroxide or per-salts may be present.  Specifications 358,534, 427,494 and 455,742 and U.S.A. Specifications 2,122,886, 2,133,257 and 2,265,242 are referred to.
Patent GB-685411-A (GB)
Title: A reciprocating motor
IPC: H02K33/02
Filed: 1951-02-09
Abstract: 685,411. Electric tests. TESLA, NARODNI PODNIK, and EZER, K. Feb. 9, 1951 [Feb. 10, 1950], No. 3175/51. Class 37. [Also in Group XXXV] An automatically balancing Wheatstone bridge, Fig. 5, which may be capacitative or resistive, is adjusted by means of a potentiometer 28 operated by a reciprocating motor (see Group XXXV), which is fed with non- sinusoidal impulses. These give it motion in one direction faster than in the other, this unequal motion being converted by friction into a progressive motion of a sliding piece 2. The bridge is energized with A.C. from transformer 31 and the out-of-balance voltage passes through an amplifier 33 to an impulse generator 32 which may be constructed as in Fig. 4, and the impulses produced are such as to move the slider 2 in a direction to correct the unbalanced condition. If desired, the bridge may be energized with D.C. and a suitable circuit is described for producing pulses in a direction dependent on the polarity of the out-of-balance voltage.
Patent GB-808096-A (GB)
Title: Improvements in or relating to recording machines
IPC: G11B15/08
Filed: 1957-01-29
Abstract: 808,096. Magnetic recording and reproducing apparatus. HOLLOWAY, C. E. Jan. 29, 1957, No. 3187/57. Class 40 (2). A magnetic recording tape 1 has a transparent section 8. Light from a source 6 passes through the section 8 to a photo-cell 7 and amplifier 9 producing a signal voltage of sufficient strength to operate a relay and change the operating conditions of the machine, e.g. to immediately replay a recording or to stop the machine. The area 8 may alternatively be made reflective in which case the light source and photo-cell are on the same side of the tape.
Patent GB-1059180-A (GB)
Title: Vehicle brake mechanism
IPC: B60T8/26
Filed: 1964-08-05
Abstract: 1,059,180. Brake pressure proportioning valves. KELSEY-HAYES CO. Aug. 5, 1964 [Aug. 16, 1963], No. 31889/64. Heading F2F. The rear brakes of a vehicle are connected to the master cylinder by a device which, after the braking fluid pressure has exceeded a certain value allows the pressure in the rear wheel brake cylinders to rise at a rate lower than the rate of increase in pressure in the front wheel cylinders. The device is connected at 62 to the master-cylinder 10, fluid therefrom passing from chamber 55 through passages 54, 57, 50 to chamber 58 connected to the rear wheel cylinders 15. When the fluid pressure exceeds a predetermined value the hollow piston 25 moves leftwards against the action of springs 42, 45, under the effect of fluid acting in the space 31, to apply its valve face 33 to the valve seat 51 and close communication between chambers 55 and 58. A further rise in pressure in chamber 55 acts on the small area of the valve face 33 to crack the valve to allow a reduced rise in pressure to occur in chamber 58 and act on the larger area of cavity 31 to move the piston 25 in a valve closing direction. When, during brake release, for example, the pressure in chamber 55 falls below that in chamber 58 fluid can flow back to chamber 55 past the lip of the seal 37.
Patent GB-687344-A (GB)
Title: Improved digging machines
IPC: E02F3/04
Filed: 1949-02-04
Abstract: 687,344. Digging-machines. LEIGH, A. D. Jan. 9,1950 [Feb. 4, 1949], No. 3211/49. Class 68(i) [Also in Group I] In a machine for digging fields, trenches, or for mixing materials, the spade or spades are forced vertically downwards, tilted about a pivot into a horizontal position, then raised and returned to the original position, and during this last motion the spade is rotated and returned through 90‹ so that the excavated soil is dislodged from the spade. On one side of a wheeled carriage is a linkage system comprising a pivotally mounted anchor rod 9 to which is pivoted a beam 12, 13 that is pivotally secured to a cross-head 31 that slides on a guide rod 28 pivotally attached to the carriage. The spade shaft 33 is rotatably mounted in the cross-head 32 and on rotation of the crank 7 which is connected to the beam 12, 13 by rods 17, 18, the desired motion is given to the spade by suitable adjustment of stops 39, 40, 22 and 50. As the spade returns from the horizontal to the raised vertical position, a roller 54 mounted on the shaft 33 engages a cam 57 on the beam 13 so that the shaft is rotated against the action of a coiled spring connecting the shaft and cross-head. For each spade there is provided a separate linkage mechanism. Operation of the linkage is used to propel the carriage by a pawl and ratchet mechanism. In conjunction with each spade coulters may be secured to the carriage, whilst for trenchdigging similarly operating side-cutting spades are used.
Patent GB-432578-A (GB)
Title: Improvements in or relating to the indicating dials of petrol and like pumps
IPC: B67D7/08
Filed: 1934-01-31
Abstract: 432,578. Indicating-apparatus. BECK & CO., Ltd., and SOAR, H. G., 130, Great Suffolk Street, Southwark, London. Jan. 31, 1934, No. 3241. [Class 106 (iv)] The invention relates to petrol pumps having an indicating-pointer 1<a> which rotates once during the delivery of, say, twenty gallons and another pointer 2 which rotates once during the delivery of each gallon. To avoid parallax when observing the pointer 2, indications 3, 3a are attached to the main scale plate 1 and arranged to stand in the same plane as the pointer 2 and at a short distance from its end. In a modification, these indications may be provided on a flange standing out from the main scale plate.
Patent GB-1178435-A (GB)
Title: Control Apparatus for Lighting Installations.
Inventor: FRICKE GUNTER
IPC: G05B19/07
Filed: 1967-01-23
Abstract: 1,178,435. Stage lighting control systems. STARKSTROM-ANGLAGENBAU LEIPZIG VEB. 23 Jan., 1967, No. 3346/67. Heading H2H. A stage lighting apparatus is controlled by an amplifier 1 having two input circuits a, b, each of which comprises a variable resistor 2a or 2b and a switching device 3a or 3b, the switching devices being controlled by a pulse generator 5 having complementary pulse outputs X, X which are individually variable by way of a variable resistor 6. In its normal state the pulse generator 5 has an output signal X so that the switch 3b is operative to provide an input to the amplifier 1 over the circuit b. When the generator 5 begins to deliver pulses the switches 3a, 3b are switched on and off alternately and, as the resistor 6 is varied, the output signals are gradually varied with respect to each other so that the on and off times of the switches 3a, 3b are varied until the amplifier input is gradually transferred from the circuit b to the circuit a with a corresponding control of the stage lighting apparatus. The amplifier may be provided with a single input only, fed from the circuits a, b by way of diodes and a plurality of pulse generators may be used to control the switching devices by way of a selector switch. The switching devices may be of an electronic or an electromagnetic type. The variation of the resistor 6 may be effected by a motor control arrangement or by a series of resistors controllable by means of relays.
Patent GB-943551-A (GB)
Title: Poly-ª -olefine compositions and stabilizer combinations therefor
IPC: C08K5/151
Filed: 1961-01-30
Abstract: A polymer of a mono-olefin is stabilized with a combination of a diester of 3,31-thiodipropionic acid and an alkylated hydroquinone monoglycidyl ether of formula: <FORM:0943551/C3/1> wherein R1 is a C4 to C8 tertiary alkyl radical. The polymer may be derived from ethylene and/or propylene, methylbutene, methylpentene, pentene, dimethylbutene, octene or decene, and of the listed stabilizers those preferred are dilauryl-3,31-thiodipropionate, and 2-t-Butyl or Octyl-4-(2,3-epoxypropoxy) phenol.  The compositions may be formed into sheet, rod, tube, pipe or film and may be used as coating compositions.
Patent GB-504668-A (GB)
Title: Improvements in or relating to television transmission apparatus
IPC: H01J31/26
Filed: 1938-02-03
Abstract: 504,668. Cathode-ray tubes. SCOPHONY, Ltd., WIKKENHAUSER, G., and THOMSON, A. F. H. Feb. 3,1938, No. 3433. [Class 39 (i)] Television transmitting apparatus comprises a photo-electrically active mosaic screen, the elements of which lose electrons under the influence of the projected image, scanned both by a -sharply focused light spot to give the transmitted signals by raising the elements to a fixed positive potential and, shortly afterwards, by a more diffuse cathode-ray to restore the elements of the mosaic to a stabilizing potential. In the form shown, the optical system 4 focuses the image of the object 5 onto the double - sided photo - electrically active mosaic screen 1. Photo-electroris emitted leave the elements of the screen positively charged to an amount dependent on the intensity of the incident light and are collected by the ring electrode 3. The optical scanning arrangement comprising two rotatable drums 6 and 7 throws a small spot of light onto the screen 1 which loses electrons to the collecting ring 2 until the potentials of the elements reach the fixed "scanning" potential of the ring 2. This sudden change causes a drop in potential across the resistance 13 of the amplifier 14, a "negative" signal being transmitted. After the light spot has left the element, the cathoderay falls on it and reduces its potential to the fixed "stabilizing" " potential which may be that of the cathode of the electron gun 8. The cathode-ray need not be sharply focused and may be a beam covering several scanning lines as traced by the light spot, so that it has only to be deflected vertically. The loss of electrons due to the optical image takes place during the greater part of the frame period. The screen may comprise silver rivets in an insulated wire mesh signal plate, the whole being covered on both sides with a photo-emitter such as caesium; or it may be single-sided and comprise a mica sheet between a signal plate and a photo-electric mosaic using one collecting ring electrode. The image may be projected normally on to the screen and the scanning light and cathode-rays may be projected obliquely, or vice versa. The cathode-ray may be incident on either side of the double-sided screen and the'side remote from the ray may have its collecting electrode in the form of a wire mesh parallel to the screen.
Patent GB-556113-A (GB)
Title: Interpolymers of vinyl esters
IPC: C08F218/04
Filed: 1942-03-16
Abstract: 556,113. Resinous polymerization products DU PONT DE NEMOURS & CO., E. I. March 16, 1942, No. 3438. Convention date, Jan. 14, 1941. [Class 2 (iii)] Interpolymers are prepared by heating a vinyl ester of a monocarboxylic acid with a reaction product of a frosting drying oil and a minor proportion (i.e. 5-50 per cent.) of an α, #-unsaturated acid having a double bond between the carbon next to the carboxyl group and the carbon once removed therefrom or a derivative thereof such as an ester, anhydride, amide or nitrile. The oil may be china wood, oiticica or Japanese wood oil with or without raw or boiled linseed, soya bean, perilla, castor or dehydrated castor oil. The unsaturated acid may be maleic, fumaric, methacrylic, crotonic, sorbic, acrylic α-chloracrylic, α- or #-phenylacrylic, #-furylacrylic, α-cyano-#-propylacrylic, itaconic and mesaconic acids. Suitable vinyl esters are vinyl acetate, vinyl chloracetate, vinyl formate and vinyl benzoate. The unsaturated acid may be heated with the cil prior to heating with the vinyl ester or the three components may be heated together. Catalysts, e.g. hydrogen, benzoyl, or acetyl peroxide may used. Excess vinyl ester monomer may be removed by vacuum distillation, being replaced continuously or at intervals with a solvent, such as naphtha, benzene, toluene, xylene or ethyl or butyl acetate. Other polymerizable substances such as methyl vinyl ketone, vinyl chloride, vinyl ethers and styrene may be admixed in minor proportions with the vinyl ester. The products may be used as coating compositions, which may comprise nitro-cellulose, plasticizers e.g. dibutyl phthalate or tricresyl phosphate, natural or synthetic resins, e.g. rosin, phenol-formaldehyde, phydroxydiphenyl - formaldehyde, and oilmodified alkyd resins, driers and pigments, or as moulding compositions.
Patent GB-855017-A (GB)
Title: Biguanide derivatives
Inventor: JAMES JOHN WILLIAM
IPC: C07D295/13
Filed: 1958-02-03
Abstract: The invention comprises biguanides of the formula: <FORM:0855017/IV(b)/1> and non-toxic acid addition salts thereof, wherein R represents an aryl group optionally substituted by one or more of any combination of alkyl, aryl, aralkyl, alkaryl, alkoxy and nitro groups and halogen atoms (e.g. chlorine), X is oxygen, R5-N < or <FORM:0855017/IV(b)/2> R1, R2, R3 and R4 are independently hydrogen or C1-4 alkyl groups, R5 is a C1-4 alkyl group, n is an integer of from 2 to 6 and the polymethylene chain may be interrupted by an oxygen atom, and p and q, which may be the same or different, are 0 or 1.  Biguanides of the above formula, in which X is oxygen or R5-N <, are prepared by heating under reflux in an inert organic liquid a salt of dicyanimide with a heterocyclic amine of the formula:  <FORM:0855017/IV(b)/3> wherein X is oxygen or R5-N < and Y is hydrogen or -(CH2)n-NH2, to form a cyanoamidine compound of the formula:  <FORM:0855017/IV(b)/4> wherein q is 0 or 1, and thereafter heating such cyanoamidine compound under reflux in an inert organic liquid with an amine of the formula RNH2.  Biguanides of the above formula, in which X is:  <FORM:0855017/IV(b)/5> are prepared by heating under reflux in an inert organic liquid one molecular proportion of a piperazine derivative of the formula: <FORM:0855017/IV(b)/6> wherein Y1 and Y2 are independently hydrogen or -(CH2)n-NH2, with at least two molecular proportions of a salt of dicyanimide to form a cyanoamidine compound of the formula: <FORM:0855017/IV(b)/7> wherein p and q are each 0 or 1, and thereafter heating one molecular proportion of such cyanoamidine compound with at least two molecular proportions of an amine of the formula R NH2.
Patent GB-241435-A (GB)
Title: Manufacture of new azo dyes of the pyrazolone series
Filed: 1925-02-07
Abstract: Monoazo dyes are obtained by coupling any diazo compound with 1- (21 : 51-dichloro-31-sulphophenyl)-3-methyl-5-pyrazolone. The diazo compounds obtained from aniline and its holologues and substitution products, their sulphonic acids, sulphamides and carboxylic acids, and the b -naphthylamine monosulphonic acids are mentioned; in an example, diazotized o-aniline sulphonic acid is used.  The products dye wool from an acid bath in yellow or greenish-yellow shades.  1- (21 : 51-dichloro-31 sulphophenyl)-3-methyl-5-pyrazolone is obtained from p-dichlorbenzene by sulphonating it and subsequent nitration and reduction.  The resulting p-dichlorometanilic acid is converted into the corresponding p-dichlorophenylhydrazine-m-sulphonic acid and condensed with ethyl acetoacetate.
Patent GB-1168501-A (GB)
Title: Improvements in and relating to Electric Motors
Inventor: HOOPER EDWARD
IPC: H02K7/14
Filed: 1967-01-25
Abstract: 1,168,501. Assembling electric motors. BRITISH ENGINES Ltd., and E. HOOPER. 11 April, 1968 [25 Jan., 1967], No. 3637/67. Headings B3A and B3V. [Also in Divisions H1 and H2] A motor is assembled into a casing, e.g. of a coal drilling machine, by shrinking a sleeve 3 around the stator 2 and then shrinking the casing on to the sleeve. As shown, the casing is formed in two parts 1, 5 which abut centrally of the sleeve 3 and, in addition to supporting the rotor shaft 10 carry respectively a gear-box 12 containing an epicyclic gear train with nylon or other wear resistant plastic planet wheels, and a cowling 22 for a nylon or similar plastic fan 23 secured to the rotor shaft 10 externally of the casing and adapted to blow air over the exterior thereof. The casing also carries handles one of which has a spring-loaded rotatable grip (21), Fig. 2 (not shown) by means of which a micro-switch (17) in the casing may be actuated.
Patent GB-586001-A (GB)
Title: Improvements in or relating to the insulation of coils for electrical apparatus
IPC: H01F41/12
Filed: 1944-02-28
Abstract: 586,001. Electric coils. TELEPHONE MANUFACTURING CO., Ltd., HOLT, J. W., and TERRY, R. ST. G. Feb. 28, 1944, No. 3680. [Class 35] Pieces of thermoplastic material are applied to a magnet or other electric coil and then heated to cause them to become plastic and to coalesce to form a complete sheath for the coil. In the form shown, a sleeve 3 and washers 4 of polyethylene or polystyrene are applied to a core 2 which is then wound with enamelled or otherwise insulated wire and an outer band of insulation is applied, followed by heat to unite the parts 3, 4 and 6 into a complete coil enclosure.
Patent GB-104397-A (GB)
Title: Improvements in and relating to the Manufacture of Electrically Welded Link Chains and Cables.
Inventor: GREEN RICHARD
IPC: B21L15/00
Filed: 1916-03-13
Abstract: 104,397. Green, R. March 13, 1916. Making chains; welding.- Electrically welded link chains have their burrs removed by passing between rolls a, b. The roll a presses the links d into the groove b<4> of the roll b to remove the burrs. The chain is then twisted through 90 degrees and again passed through the rolls. These rolls may be used in conjunction with the sizing-rolls described in Specification 104,469, the latter pulling the chain through the former.
Patent GB-1188873-A (GB)
Title: A Process of Producing Silicic Acid Gel with Active Charcoal Incorporated therein.
IPC: B01J20/20
Filed: 1968-01-24
Abstract: 1,188,873. Silicic acid-charcoal gel. CESKOSLOVENSKA AKADEMIE VED. 24 Jan., 1968 [27 Jan., 1967], No. 3732/68. Heading C1A. Silicic acid gel incorporating active charcoal is made by suspending active charcoal in a silicic acid hydrosol, obtained by an ion exchange procedure from sodium silicate, gelling the suspension either spontaneously or by adding a trace of an inorganic salt, and drying and activating at 105-130‹ C. The inorganic salt may be an ammonium salt. The product is homogeneous, pure, and substantially free from inorganic salts.
Patent GB-123809-A (GB)
Title: Improvements in the Radiators and Adjacent Fittings of Motor-vehicles.
Inventor: COOKE GEORGE FREDERICK
IPC: B60K11/04
Filed: 1918-03-04
Abstract: 123,809. Cooke, G. F. March 4, 1918. Brackets, electriclamp.-The supports connecting tha upper and lower tanks of radiators for motor vehicles are formed with casings or recesses in which the vehicle lamps and their reflectors are arranged. As shown, each casing e is formed integral with its support c and is provided at its rear part with a socket g for the lamp-holder h.