baber/WOPTO huggingface dataset:
Patent GB-344031-A (GB)
Title: Improved means for preventing freezing of domestic watersupply and like pipes
IPC: F16L53/30
Filed: 1929-11-28
Abstract: 344,031. Preventing bursting of water-pipes. WARD, P., 38, Joicey Road, Low Fell, Gateshead, Durham. Nov. 2, 1929, No. 36527. [Class 68 (i).] Bursting of water-supply pipes is prevented by a chamber adapted to be fixed on or near the pipe, as by straps r, and containing an electric lamp e, the chamber preferably comprising a cast or stamped grooved shoe a with end wall b and lug k, and an arched cover f with wall g secured to the lug k.
Patent GB-411943-A (GB)
Title: Improvements in and relating to translucent moulded building materials
IPC: D21J1/16
Filed: 1932-12-23
Abstract: Translucent bodies are moulded by placing one or more thin layers of cellulose wadding, which have been impregnated with a solution of a translucent binding material such as gelatine, gum arabic, cellulose acetate &c., in a mould, e.g. a plaster mould, pressing the thin layers against the wall of the mould and allowing the material to set.  The process is carried out at normal temperatures.  The material may be coated and coloured, either superficially or throughout and may be metallised.
Patent GB-1536309-A (GB)
Title: Chemical indicator primarily for use in sterilisation
IPC: G01K11/16
Filed: 1977-09-02
Abstract: 1536309 Sterilisation indicators DRG (UK) Ltd 2 Sept 1977 [3 Sept 1976] 36577/76 Headnig A5G [Also in Division Gl] A temperature-indicating composition operates by reacting with formaldehyde under low temperature steam-formaldehyde sterilisation conditions comprises a non-volatile #- dicarbonyl compound (e.g. calcium ethyl acetoacetate) and a non-volatile primary or secondary amine compound (e.g. aniline sulphate or triammonium citrate). The composition is in the form of an ink including resin, methylated spirit and tannic acid.
Patent GB-823697-A (GB)
Title: Improvements in and relating to electric switch mechanisms
IPC: H02B1/04
Filed: 1955-12-21
Abstract: 823,697. Switches held set and freed mechanically. N.S.F. Ltd. (Oak Mfg. Co.). Dec. 21, 1955, No. 36645/55. Class 38 (5). [Also in Group XXV] A switch mechanism which may be applied in connection with a radio receiver adapted for mains and battery operation, includes an actuating plate 35 pivoted to a cover plate 10 by a circular tab joined to the plate 35 by a neck 37, the tab engaging in a dished socket 28 pressed out of the plate and a slot 29 being provided in the plate and socket wall through which the neck 37 passes. The tab can be withdrawn from the socket through the slot after tilting the plate 35 with respect to the cover plate. Actuating fingers 41 and 38 are bent upwardly and downwardly from the plate which is loaded by a spring 44: The finger 38 engages a slot in a movable insulating plate 50 carrying contacts 51 adapted to co-operate with contacts 47 on a fixed insulating plate 46. Spring contact members 55 on the plate 46 are connected at their tips to suitable parts of a printed circuit carried on an insulating support 56. When the radio receiver is converted from mains to battery operation by disconnecting the mains plug and inserting it in a receptacle on the receiver, a pin on the plug engages the actuating finger 41 on plate 35 to change the switch connections for battery operation.
Patent GB-1347148-A (GB)
Title: Ink drop writing systems
IPC: H04N1/034
Filed: 1971-08-04
Abstract: 1347148 Ink droplet producers A B DICK CO 4 Aug 1971 [5 Aug 1970] 36714/71 Heading B6P An ink droplet printer comprises a nozzle to which perturbations are applied by an electromechanical transducer 50, 52, the frequency of the perturbations, ink pressure, dimensions of the nozzle and the characteristics of the ink being such that fluid resonance occurs within the nozzle and satellite droplets formed in conjunction with the main droplets travel with a greater velocity than the main droplets. The electromechanical transducer may comprise piezoelectric crystals 50, 52 held against a stop 44 by threaded members 42, 56 to elongate and contract the nozzle periodically.
Patent GB-901300-A (GB)
Title: Weighing means for use with belt conveyers
IPC: G01G11/00
Filed: 1959-10-29
Abstract: 901,300. Electric selective signalling systems. BOEKELS, H., and BOEKELS, K. J., [trading as BOEKELS & CO., HANS]. Oct. 29, 1959 [Dec. 26, 1958], No. 36717/59. Class 40 (1). A device for continuously weighing the amount of material carried along a conveyer belt comprises a transducer producing an electric signal dependent upon the deflection of a resiliently yielding belt support, and means for actuating a counter in dependence upon the speed of the belt. Depression of a roller 4, Fig. 1, by the weight of material on a conveyer belt 1, upsets the balance of an A.C. inductance bridge to produce an output across a potentiometer wire 17 proportional to the roller deflection. The output of a tachometer 10 driven by the belt is applied to a self-balancing potentiometer circuit comprising a motor 14 having ita armature wound in series with a potentiometer 11, whose slide is driven by the motor and also mechanically connected to the slide of the potentiometer 17. The signal from wire 17 to a motor 18 is proportional to the weight passed along the belt per unit time. Thus the number of revolutions of the motor is an indication of the weight passed. A vane 19, Fig. 2, driven by the motor, passes between the plates 20 of a condenser to excite an oscillator circuit (for the period during which the vane is between the plates) so energizing a relay R which closes contact R1 to apply a D.C. pulse to a counter C, the number of pulses being proportional to the weight of material which has passed the sensing station. Specification 901,301 is referred to.
Patent GB-786930-A (GB)
Title: A process for preparing phthalic acids by oxidation of dialkyl benzenes
IPC: C07C51/265
Filed: 1955-12-22
Abstract: A phthalic acid is prepared by oxidizing a dialkylbenzene by means of oxygen or an oxygen-containing gas present in sufficient excess adequately to remove volatile by-products and acetic acid, in a medium consisting mainly of acetic acid, in the presence of a catalyst comprising a manganese compound together with either a cobalt compound or a barium compound or both a cobalt compound and a barium compound and under a pressure between 2 and 10 atmospheres (absolute), the reaction conditions being such that volatile by-products and acetic acid are removed from the reaction mixture in the vapour phase and substantially all the heat of reaction is withdrawn from the reaction mixture by the evaporation of the volatile by-products and acetic acid therefrom.  The process prevents the build-up of by-products such as formic acid, water, formaldehyde and methyl acetate in the reaction mixture. The preferred temperature is 100-140 DEG  C.  In an example, an acetic acid solution of p-diisopropylbenzene, p-isopropylbenzoic acid, cobalt acetate and manganese acetate was oxidized with air to give terephthalic acid under the conditions specified above. Specification 737,439 is referred to.
Patent GB-967552-A (GB)
Title: Polymerization process
IPC: C08F20/10
Filed: 1960-10-26
Abstract: Polymerizing at least one ester of acrylic and/or methacrylic acid by forming, at a temperature between -20 DEG  and 40 DEG C., a solution of the ester and from 0.2 to 1.5 moles of an organomagnesium compound per mole of ester, mixing the solution with the same or different ester in such an amount as to provide a mixture containing from 0.01 to 0.2 moles of organomagnesium compound per mole of ester, and maintaining the mixture at a temperature between 0 DEG  and -100 DEG C. until the polymer is formed. The magnesium compound has preferably the formula RMgY, where R represents an alkyl, cycloalkyl, aralkyl, aryl, alkenyl, aralkenyl, or alkynyl group, and Y is bromine, or R. Exemplified compounds are phenyl magnesium bromide, diphenyl magnesium, and etherates thereof.  The solvent for the monomers may be a hydrocarbon or an ether, or mixtures.  The Specification mentions many monomers.  In the examples the preparation of the following polymers is described polyisopropyl acrylate, polyallyl acrylate, poly 2-ethylhexyl acrylate, polyphenyl methacrylate, polystearyl methacrylate, polybenzyl methacrylate, poly sec-butyl acrylate, polymethyl methacrylate, poly cyclohexyl acrylate, poly tert.-butyl acrylate, polyisobornyl acrylate, a copolymer of cyclohexyl and isobornyl acrylate, a copolymer of isopropyl acrylate and isobornyl acrylate, and a copolymer of isopropyl acrylate and 2-ethyl-hexyl acrylate. The reaction is generally terminated by the addition of methyl alcohol, and the polymer recovered and purified by conventional techniques such as treatment with water, methanol, and hydrochloric acid. Specifications 841,338, 837,227, 884,733 and 967,551 are referred to.
Patent GB-774019-A (GB)
Title: Improvements in and relating to topping devices for root crop harvesting machines
Inventor: STOLL WALTER
IPC: A01D23/02
Filed: 1954-12-21
Abstract: 774,019. Topping root-crops. STOLL, W. Dec. 21, 1954, No. 36951/54. Class 6(3). A beet-topping machine of the type wherein a stationary but vertically-adjustable knife 15 is guided by a set of co-axial feeler wheels 4 which ride over the beet-crowns is characterized in the provision of a further set of wheels 5 rearwardly of the feelers but interleaved with them the further set serving to feed cut-tops rearwardly to an endless chain-conveyer 8 and the outermost wheels of this set being integral with ribbed drums 6. The wheels, knife and conveyer are mounted on a frame 3 which is pivoted at 18 to the chassis 2 of a beet-harvester (not shown) so that it can rise and fall as the wheels 4 ride over beet-crowns. The wheels 4 are driven, anticlockwise, at a circumferential speed greater than the forward speed of the machine and the wheels 5 are driven, anticlockwise, at a circumferential speed at least equal to the upward speed of the conveyer 8. The drums 6 close the space between the outermost wheels 5 and the side-supports 9 of the conveyer 8.
Patent GB-1093111-A (GB)
Title: Improvements in apparatus for delivering divided material
Inventor: LAVERICK MALCOLM KEITH
IPC: G01G11/12
Filed: 1963-09-20
Abstract: 1,093,111. Weighing apparatus. COAL INDUSTRY (PATENTS) Ltd. Sept. 15, 1964 [Sept. 20, 1963], No.37121/63. Heading G1W. Apparatus for delivering material from a hopper E to a jig washer JW comprises a conveyer A having boundary surfaces adjacent its upper surface as to ensure the volume of material on the conveyer A is constant, the speed of the conveyer being adjusted in accordance with a predetermined relationship between the rate of feed of material from the conveyer and the bulk density of the material on the conveyer. The conveyer A is pivotally mounted on a fulcrum C vertically below the hopper E and is provided with a counterbalance weight W. A weighing device J which may be pneumatic, hydraulic or electrical is arranged to transmit a signal in accordance with the weight of material it senses through an amplifier P to actuate suitably a variable speed drive of the conveyer A. The weighing device J may include a diaphragm (JA) Fig. 3 (not shown) which is supplied with fluid through a valve (JB) so as to maintain the conveyer A in a balanced position. The pressure of the fluid is signalled to the variable speed drive through a conduit (JE). The hopper may be supplied with material either from a bunker O (Fig. 1) fitted with a vibro-feeder N which is controlled by a controller K so as to maintain the level of material in the hopper E between two levels LU and M or from a bunker (O) Fig. 2 (not shown) which is connected to the hopper E by a chute (T) and which is filled from a conveyer R by an amount controlled by a controller K which suitably positions a material deflector S.
Patent GB-1082152-A (GB)
Title: Program control mechanism
IPC: D06F34/28
Filed: 1964-09-10
Abstract: 1,082,152. Timed control of electric circuits. H. OBERGFELL [trading as KIENINGER & OBERGFELL]. Sept. 10, 1964 [Sept. 10, 1963], No. 37148/64. Heading G3T. [Also in Division H2] A programme control mechanism (see Division H2) has a main shaft (1) carrying programme discs NP (29) and driven by a self-interrupting stepping magnet SM, and means for rendering inoperative some of the energizing pulses for the stepping magnet to lengthen the time interval between steps of the shaft (1). Magnet SM is energized periodically by a contact set ni controlled by a contact disc NI. A contact set ns controlled by a contact disc NS is connected in series with the pulsing contact set ni, operated by a synchronous motor via the contact disc NI, and can suppress parts of the pulse sequence of contact set ni. Contact set nh is controlled by contact disc NH or by physical factors such as temperature by thermostat switches th 1, th 2, which can be rendered inoperative by keys or buttons TN 1, TN 2. Contact disc NH is on the main programme control shaft with programme discs NP1 - NP4. The programme prolongation produced by disc NS is selectively suppressed by operation of keys or buttons T1 - T2 for the four possible programmes. Programmes may be prolonged or eliminated Figs. 3-5 (not shown).
Patent GB-829556-A (GB)
Title: Insecticidal compositions
IPC: A01N65/00
Filed: 1955-12-29
Abstract: An oil-free insecticidal composition comprising pyrethrins dissolved in a synergist therefor is prepared by extracting pyrethrins from pyrethrum with a volatile solvent, adding the synergist for pyrethrins to the extract so obtained and subsequently removing the volatile solvent.  The synergist may be piperonyl butoxide or analogues having the generic formula <FORM:0829556/VI/1> in which R is a saturated, bivalent, aliphatic, hydrocarbon radical, A is H or an alkyl radical R1 is an alkyl, cycloalkyl, aralkyl, aryl or heterocyclic radical, A1 is a saturated bivalent aliphatic hydrocarbon or radical having 2-3 C atoms and n is an integer from 1-3, N-(2-ethylhexyl) - 3,6 - endomethylene - 4 - cyclohexene - 1,2 - dicarboximide, diallyl phthalate or N-2-ethylhexyl phthalimide.  The oil-free compositions may be used in aerosol sprays, in aqueous emulsions or, admixed with a solid carrier, as a dust.
Patent GB-346688-A (GB)
Title: Improvements in mounting the steered road wheels of vehicles
IPC: B62D7/18
Filed: 1929-12-05
Abstract: 346,688. Mounting steerable road wheels. ADAMS, F. J., 11, Moule Avenue, Brighton, Victoria, Australia. Dec. 5, 1929, No. 37260. Convention date, Jan. 31. [Class 79 (v).] A steering road-wheel is rotatably mounted on an upwardly-extending member fitted to the chassis below the wheel centre and angularly movable parallel to the plane of the wheel, resilient means being provided for resisting the angular displacement of the upwardly-extending member. In the construction shown in Figs. 1 and 2 the road wheel 17 rotates on a spindle 16 secured to a crank member 15 extending upwardly from a pin 14 by which it is pivoted to the usual steering swivel 11, the swivel being connected to the front axle 10 by the steering pivot 11<1>. The crank 15 can oscillate about the pin 14 but its movements are resisted and controlled by springs 20 extending between the swivel 11 and adjustable stops 19 carried by flanges 18 formed on the crank 15. Oscillations of the wheel caused by road shocks are damped out by the springs 20, and, in order to give one steering wheel a different period of vibration from that of the other, (a) one wheel only may be mounted in the manner described, (b) the springs 20 on one wheel mounting may be stressed differently to those on the other, or (c) one crank 15 may be longer than the other. Shock-absorbers or vibration dampers may be provided to act in conjunction with the springs 20. A brake drum 21 is fixed to the wheel and the brakes may be applied hydraulically or pneumatically, or, as shown, mechanically, by means of a telescopic shaft 26, 26<1>, an arm 27, universal joint 25, and cam 23. In a modification laterally-extending arms are provided on the crank and on the steering swivel, and telescopic spring cylinders are arranged between the arms. In the construction shown in Figs. 5 and 6 an eccentric 34 is used instead of the crank member, the eccentric being pivoted at 37 to the steering swivel 11 and being provided on its periphery with bearings 35 for the hub of the wheel 17. An arm 38, fixed to the pivot pin 37 and therefore to the swivel 11, extends into the eccentric and springs 20 are provided between the arm and the walls of the eccentric, relative movement between the eccentric and the swivel being limited by adjustable stops 39. Snubbers or dampers 44 may be provided. Modifications are described in which (1) instead of the helical springs 20, spiral springs are mounted on the pivot pin 37 of the eccentric, their inner ends being secured to the pin and their outer ends to the eccentric, and (2) instead of a crank or an eccentric the swivel 11 carries an upwardly-directed spring or flexible arm fixed at its lower end to the swivel and carrying the wheel spindle at its upper end.
Patent GB-1471722-A (GB)
Title: Refrigeration unit
IPC: F25D19/00
Filed: 1974-08-27
Abstract: 1471722 Refrigerating THERMO KING CORP 27 Aug 1974 [7 Sept 1973] 37326/74 Heading F4H  A transportable refrigeration unit for a vehicle container comprises a main frame 2 supporting an evaporator section 4, a condenser structure 6, and a compressor 34. The evaporator section 4 includes an evaporator coil 24, a fan 26 and ducting defining an air discharge duct 30 and an air intake 28, and is mounted on a single substantially planar upright panel 5 which is removably fastened to the rear of the frame 2 by bolts (60, Fig. 5). The frame 2 also supports a battery 12; a fuel tank 14 for supplying fuel to an I.C. engine 36; and an electrical control box 16. The engine 36 drives the compressor and the condenser and evaporator fans 33, 26 via a pulley and belt system. The frame 2 is also provided with fork-lift prong receptacles 18.
Patent GB-504908-A (GB)
Title: Crane equipment for the recovery of seaplanes and boats
IPC: B66C13/02
Filed: 1938-12-23
Abstract: 504,908. Winches. CLARKE, CHAPMAN, & CO., Ltd., WOODESON, W. A., and MIDGLEY. W: Dec. 23, 1938, No. 37441. [Class 78 (v)] For the raising of sea-planes &c. from rough water a winch a having a pawl-andratchet drive and a tensioning spring winds up a cable f passing along a main crane jib o and a steadying boom b to a spring-loaded overhauling weight e. To the weight e is attached the upper part c of a mechanical coupler from which hangs a coupling rope j which passes round the lower part d of the coupler, back through the part c, and over the jib o and boom b to the winding drum of a control winch m. This drum is driven through a fluid coupling which allows a man standing on the sea-plane &c. to seize a quick-release hook h depending from the part d, and pull it down to hook on the slings. The fluid coupling allows this to be done while the motor speed is slow, but when this is quickened sufficient tension is imparted to the rope j to draw down the weight e against the tensioning spring of the main winch a till the couplings c, d engage. The main winch a is then started to raise the load. Specifications 486,599, and 501,324 are referred to.
Patent GB-1056768-A (GB)
Title: Improvements in or relating to electric conductor identification apparatus
Inventor: MURCH DEREK CLIFFORD
IPC: G01V3/06
Filed: 1963-09-24
Abstract: 1,056,768. Locating underground conductors. LONDON ELECTRICITY BOARD and D. C. MURCH. Sept. 16, 1964 [Sept.24, 1963], No. 37602/63. Heading G1N. Manually portable apparatus for identifying or locating a power supply cable or a metal pipe carrying an alternating current comprises two coils mounted so that, in use, their axes make equal and opposite oblique angles to the horizontal and means for separately but simultaneously indicating the magnitudes of the signals induced in the two coils or separately but simultaneously indicating the sum and the difference of the magnitudes of the signals induced in the two coils. As shown in Fig. 1, the two coils 10, 11 have their axes at 45 degrees to the horizontal but they may be at 20 to 30 degrees to the horizontal or adjustable. A four position switch 17 enables the signals induced in the coils to be fed separately to the gauged attenuators 20 or combined in phase or antiphase and the connections of one coil to be reversed. The attenuators have a calibrated control 21. A pair of adjustable matched amplifiers 22, 23 and detectors feed a crossed pointer indicator. Alternatively, headphones may be used, each amplifier and detector feeding a separate ear piece. The apparatus may have an elongated tubular handle.
Patent GB-915250-A (GB)
Title: Improvements relating to weighing machines
Inventor: ASTON HORACE
IPC: G01G19/46
Filed: 1960-11-03
Abstract: 915,250. Weighing apparatus. SALTER & CO. Ltd., GEORGE. Oct. 19, 1961 [Nov. 3, 1960], No. 37768/60. Class 143. In a personal weighing machine of the kind in which a platform 2 is floatingly supported on two overlapping lever plates 3, 4, fulcrumed on a base 1 so that the load is divided between them and in which the upper, main, lever plate 3 is attached to load springs 5 and its movement is transmitted, through rack-and-pinion 33, 34, to a rotatable dial 6, a bracket 20 from which the load springs 5 are suspended and bracket parts 36, 37 which form a bearing bar the pinion 34 are both carried on one of the lever plates, as shown, by the upper lever plate 4. The lower, main, lever plate 3 is fulcrumed on knife edges 8 and the upper lever plate 4 is fulcrumed on knife edges 81. The platform 2, which may be coupled to the base 1 through a spring 42, has depending lugs 13 with notches 14 whereby it is floatingly supported on the lever plates. The bracket 20 is of inverted U-shape and a horizontal plate 21 engages notches 22 in its sides. The load springs 5 are suspended from the end of a beam-like plate 18 which is convex at its middle part 25 so as to seat rockingly on the plate 21. By means of a screw 23 the plate 21 may be raised and lowered, so providing a zero-setting arrangement. The rack 33 is moved in correspondence with the movement of the outer end of the main lever plate 3 through a bell-crank lever, of which one arm 28 has a stirrup part 29 which rests on a projection 26 from the lever plate 3, Fig. 10, and the other arm 30 is jointed at 31 to a rack bar 32 extending from the rack. A tension spring 39 exerts an oblique pull on the rack bar 32 and thereby maintains the rack 33 in engagement with the pinion 34 and also keeps the stirrup part 29 in contact with the projection 26.
Patent GB-838157-A (GB)
Title: Improvements relating to bayonet catch couplings
Inventor: TOMKINSON ERIC MARK
IPC: F16B5/10
Filed: 1957-12-05
Abstract: 838,157. Bayonet-joint fastenings. TOMKINSON Ltd.. F. W. Oct. 29, 1958 [Dec. 5, 1957], No. 37860/57. Class 44 In a bayonet-joint fastening for detachably connecting two co-axial cylindrical members 10, 11, the member 10 has L- shaped slots 14 which form tongues 15 each of which has a bayonet groove 13 formed .therein, and the member 11 inwardlyprojecting indentations 16 engageable with the grooves. The radial depth of each groove 13 is progressively reduced from the entrance end to the closed end to a depth less than the radial depth of the indentations 16 so that when the members are fully engaged the tongues, being resilient, are pressed inwardly and a frictional grip is obtained between the members 10, 11. The member 10 may have a stepped portion 12 to receive the member 11, and part of each groove 13 is formed as a helix to effect axial movement between the members 10, 11.
Patent GB-1223660-A (GB)
Title: Process for the manufacture of carboxylic acids
IPC: C07C67/00
Filed: 1969-07-29
Abstract: 1,223,660. Carboxylic acids. RUHRCHEMIE A.G. 29 July, 1969 [7 Sept., 1968], No. 38081/69. Heading C2C. Carboxylic acids are prepared by reacting an alcohol with carbon monoxide in the presence of an acid catalyst under turbulent flow conditions in a tubular reactor. In a preferred embodiment, isobutanol is converted to pivalic acid using cone. sulphuric acid saturated with carbon monoxide.