baber/WOPTO huggingface dataset:
Patent GB-1023443-A (GB)
Title: Electrical timing apparatus for mounting in a vehicle to monitor the speed thereof
IPC: B61L25/02
Filed: 1962-09-20
Abstract: 1,023,443. Automatic train control. MASCHINENFABRIK OERLIKON. Sept. 20, 1962 [Oct. 4, 1961], No. 35905/62. Heading B7N. In a device for controlling the speed of a train, two spaced track magnets co-operate with train carried apparatus including means for defining a time period which is set in operation on passing the first magnet and which operates braking and alarm apparatus if the second magnet is passed before the time period expires. The train apparatus includes a first mono-stable circuit 2 which is triggered to its unstable state when switch 1 is operated on passing a track magnet and on return to its normal condition triggers a second mono-stable circuit 3 to its unstable state in which it remains for a period of approximately two seconds. The outputs of both multivibrators are connected to inputs of AND circuit 4 which, if multivibrator 2 is triggered to its unstable state on passage over the second track magnet before multivibrator 3 has returned to its normal state, provides an output which operates alarm and braking elements 6 via an actuating device 5. In a second arrangement, Fig. 4 (not shown), the device is arranged for use in controlling a train manned by a single operator in which the controls include a dead man's handle.
Patent GB-862177-A (GB)
Title: Improvements in apparatus for detecting perforations in webs, sheets and the like
IPC: G01N21/89
Filed: 1957-11-20
Abstract: 862,177. Perforation detectors. INTERNATIONAL BUSINESS MACHINES CORPORATION. Nov. 20, 1957 [Nov. 20, 1956], [No. 36204/57. Class 40(3)] Apparatus for detecting holes in sheet material, particularly material which is transparent to visible light but opaque to ultra violet light comprises, arranged as a pinhole detector, an ultra violet light source, e.g. a mercury vapour lamp 10 which illuminates the surface of sheet material 12 moving over an aperture 13 containing an ultra violet filter 15. Light transmitted by a hole passes through the aperture and is directed by the light guides 18 on to a photocell 16 if the signal from the cell exceeds a set value an amplitude selector 19 energises a reject circuit. In Figs. 5 and 6 (not shown) the apparatus is arranged as a hole reader for business record cards.
Patent GB-1078500-A (GB)
Title: Method of producing chlorinated polyethylene compositions
IPC: C08K5/00
Filed: 1965-08-24
Abstract: Extended or plasticized compositions of chlorinated polyethylene are produced by adding a heat stabilizer to chlorinated polyethylene containing 20 to 48 weight per cent of chlorine, having an intrinsic viscosity of 2.5 to 6.0 in o-dichlorobenzene at 100 DEG  C., and being derived by chlorination of linear polyethylene of molecular weight 700,000 to 5,000,000, and intimately mixing the heat stabilized chlorinated polyethylene with an extender or plasticizer at 200 DEG  to 400 DEG  F.  Specified extenders and plasticizers are aromatic and naphthenic oils, chlorinated aromatic and aliphatic hydrocarbons, epoxidized oils and esters of phthalic, adipic, sebacic phosphoric and benzoic acids.  Specified stablizers are salts and complexes of barium, cadmium, tin, zinc, lead and sodium, and epoxy resins.  The compositions may also comprise fillers, e.g. carbon black, silica, titanium dioxide, mica, clays, talc and magnesium and calcium carbonates; curing agents, e.g. peroxides and polyfunctional amines, preferably together with sulphur or a sulphur compound such as dipentamethylene thiuram tetrasulphide, benzothiazyl disulphide and 2-mercaptobenzothiazole, or magnesium, zinc or lead oxides.  The products may be used for jacketing wires.  Many suitable components are listed and examples describe compositions comprising chlorinated polyethylenes, epichlorohydrin/Bisphenol A condensates and chlorinated aliphatic hydrocarbons together with various conventional compounding ingredients and curing agents.
Patent GB-966196-A (GB)
Title: Electric circuit breaker
IPC: H01H9/34
Filed: 1961-10-11
Abstract: 966,196. Automatic circuit-breakers; binding posts. SQUARE D CO. Oct. 11, 1961 [Oct. 14, 1960 (5)], No. 36430/61. Headings H2B and H2E. A circuit-breaker unit for detachable mounting in a switchboard such as that of Specification 793,885, comprises two independently-operable circuit-breakers 31, 32, mounted in tandem relationship in a single moulded casing 10, the contacts of the circuit - breakers being connected to a common line terminal clip 34 and to individual load terminals 64, 79. Each circuit-breaker comprises an operating member 36, a moving contact-carrying member 44 pivoted at 40 on the operating member and connected by an overcentre tension spring 50 to a cradle 52. This cradle is pivoted at 54 and is normally latched by the armature 106 of a combined electromagnetic and thermal tripping device. Each device comprises a current-carrying bi-metallic strip 102, an ambient temperature compensating bi-metallic strip 109, the armature 106, a magnetic yoke 112, a looped conductor 107 wound on a portion 115 of the yoke 112, and a blade spring 126 which normally biases the free end of the armature 106 against the end of the compensating strip 109. Under heavy overload conditions the armature 106 is attracted to the yoke 112 to release the cradle 52 and so trip the circuit-breaker open, the operating member 36 moving into an intermediate tripped position from which it is manually moved to the off position to relatch the cradle. Under moderate overloads, the distortion of the bi-metallic strip 102 causes the deflection of the whole tripping device to release the cradle 52. Each load terminal is provided by the grooved end 64 of a conducting member and a spring member 69 which is shaped as shown, so as to be trapped between the walls of a recess 65 and a projection 77 in the recess. When the bared end of a conductor is inserted through an opening 73 it becomes wedged between the grooved end 64 and the end portion 71 of the spring member 69. The conductor may be released by inserting a suitable tool through an opening 81 and moving the portion 71 out of engagement with the conductor.
Patent GB-364647-A (GB)
Abstract: 364,647. Vulcanizing long lengths. CLOUTH RHEINISCHE GUMMIWARENFABRIK AKT.-GES., F., 102, Niehlerstrasse, Nippes, Cologne, and ISBEG INDUSTRIE-UND SCHIFFSBEDARF GES., 40, Linkstrasse, Berlin, both in Germany. Sept. 2, 1930, No. 26220. Convention date, Sept. 2, 1929. [Class 70.] V-belts d are e vulcanized in considerable lengths by winding them in a screw thread g in a rotating cylinder f which screws along a fixed screw n, as the belt is wound, until it ultimately enters the vulcanizing tank v. The belt is forced into the screw thread by rollers i, and a steel band e, held by a roller j, is wound thereon as the winding proceeds. The ends of the belt and band are secured by a screw h. The cylinder is rotated by a motordriven friction roller or belt engaging the thread g. The end of the screw n within the tank is not threaded, so that the longitudinal travel of the cylinder f, which may be supported on carriages o ceases ; its rotation, however, which is produced by an auxiliary friction roller &c., serves to prevent the shedding of liquefied drops of indiarubber and to prevent the accumulation of drops of water. The diameter of the cylinder f is preferably twice that of the smallest pulley over which the belt will run, so as to minimize the tensile and compressive stresses during working.
Patent GB-972401-A (GB)
Title: Improvements relating to the inspection and packing of frangible commodities
IPC: G01N33/08
Filed: 1962-09-26
Abstract: 972,401. Testing eggs. G. N. BLISS. Sept. 26, 1962, No. 36528/62. Heading A1M. Mechanism for detecting cracks in eggs comprises an impact element adapted to strike the egg and to rebound therefrom, the amount of rebound indicating whether or not the egg is cracked, and means for identifying sound eggs. The eggs supported on a roller conveyer 20 are moved below a hammer 1 having a light impact head 2 of hard but light material and carried on a hub 3 to which is attached an arm 10 which acts as a cam follower for cam 7, which rotates so that the hammer 1 is raised to the position A where the arm 10 rides off the cam 7 so that the hammer 1 falls to strike the egg. If the egg is cracked the hammer rebounds to a position C and if the egg is sound the hammer rebounds a greater amount to a position B in which position an arm 13 closes electrical contacts 15 controlling mechanism for selecting sound eggs for packing. To prevent this mechanism from being actuated inadvertantly a further cam 31 rotates on cam shaft 8 and holds supplementary contacts 30 open except when hammer 1 212 is striking an egg. When both contacts 15 and 30 are closed a magnetic recording head 41 is energized and a record is made on tape 42 that the egg is sound, the speed of the tape being such that the record on the tape reaches the read-out head 50 as the sound egg E reaches the packing station. In a modification photo-electric means are used to record sound eggs. In a further modification a series of hammers may be used and the eggs are rotated on the conveyers. The impact element may also be in the form of a ball dropped down a tube and elevated pneumatically.
Patent GB-366199-A (GB)
Title: Improvements in brake mechanism for cycles
IPC: B62L1/08
Filed: 1930-12-05
Abstract: 366,199. Cycle brakes. RALEIGH CYCLE CO., Ltd., 177, Lenton Boulevard, and RAVEN, W. H., 45, Lenton Road, The Park, both in Nottingham. Dec. 5, 1930, No. 36679. [Class 136 (i).] Transmission mechanism for the rear brakes of cycles is provided with one or more universal connections, for example between the pull rod d and the bell-crank lever b at the upper end of the front down tube, such universal connection comprising a ball-headed stud a secured to one part, such as the lever b, and a socket formed in a nut c screwing on an adjacent part, such as the lower end of the rod d, the stud. a passing through an opening in the side of the nut c and acting between the inner V-shaped end of the socket and the lower end of the rod d. A lock-nut e secures the nut c in position.
Patent GB-619571-A (GB)
Title: Tension device
IPC: D05B47/00
Filed: 1946-12-12
Abstract: 619,571. Sewing-machines. SINGER MANUFACTURING CO. Dec. 12, 1946, No. 36779. Convention date, Aug. 9. [Class 112] A thread tension device comprises a hollow support 32, a biassing spring 51 and a sliding bias compressing nut 49 both housed within the support, tension discs 42, 43 located entirely in front of the spring and carried externally on the support, and an adjusting screw 73 partly within the support. A plate 31, fixed to the support, has oppositely disposed thread-guide and check-spring-stop lugs, and is adjustably secured to the machine head 12 by a screw and slot. One end of the check-spring 58 enters a hole in a sleeve 52, attached to the support by a set screw 56, and the other end 61 surrounds a reduced part 44 of the support. A pin 81 on the screw 73 engages one of a series of holes in a conical washer 69, provided with a thread tension scale and a lug 71 to engage a stop on a guard-plate 62. The guard plate has also an index mark for the scale, three lugs 67 engaging the disc 43, and a thread guide hook. A V-shaped lever pivoted in the machine head has one arm moved by the presser bar lifter, and the other provided with an outer boss carrying a return spring and an inner boss engaging the threaded end, of the screw 73 to release the thread tension of the presser bar is raised.
Patent GB-1272396-A (GB)
Title: Improvements in or relating to thawing frozen foodstuffs
Inventor: JASON ALFRED CHARLES
IPC: A23L3/365
Filed: 1968-08-01
Abstract: 1,272,396. Thawing frozen foodstuffs. NATIONAL RESEARCH DEVELOPMENT CORP. 1 Aug., 1969 [1 Aug., 1968], No. 36826/68. Heading A2D. Frozen foodstuffs, especially fish, are thawed by placing the frozen foodstuffs in an enclosed space, reduce the pressure in the space and providing in the space water at a temperature below that which causes deterioration of the foodstuff by cooking, whereby the water is vaporised and condenses on the frozen foodstuffs thereby giving up heat to the foodstuff. An apparatus for carrying out the thawing process is shown in Fig. I wherein water in a bath 17 is caused to vaporise by heating element 21 into the chamber 15 containing blocks of frozen foodstuffs 50 positioned in the trolley 41. The chamber 15 is maintained at a reduced pressure by the pump 33.
Patent GB-1374870-A (GB)
Title: Optical pulse modulators
IPC: G02F1/35
Filed: 1972-08-08
Abstract: 1374870 Lasers WESTERN ELECTRIC CO 8 Aug 1972 [9 Aug 1971] 36968/72 Heading H1C An optical pulse modulator comprises an amplifier 11 whose gain can be switched between two values and a saturable absorber 12 which absorbs the amplifier output when the gain is low but which is saturated when the gain is high so that the ratio of the pulse amplitudes emitted by the amplifier is increased. In Fig. 1 both the amplifier and absorber are PN junction diode laser bodies; the amplifier faces are provided with anti-reflection coatings to prevent oscillation, while the body 12 has zero or reverse bias to make it absorb. Light emitted by laser source 13 is pulsed and provides an optical input to amplifier 13 and a timing signal to encoder 14. When a digital 0 is to be transmitted the encoder gives no output and the amplifier gain is unity; the pulse from source 13 thus passes through the amplifier and is largely absorbed at 12. When a digital 1 is to be transmitted the encoder gives a current output which increases the amplifier bias and hence its gain. The pulse from source 13 is thus amplified enough to saturate the absorber for transmission. The source 13 may be a Q switched Ga-As laser; the amplifier may be a Ga-As junction, a single or a double heterojunction laser.
Patent GB-1086875-A (GB)
Title: Process for producing ªÏ,ªÏ-diaminoalkanes
IPC: C07C209/52
Filed: 1964-09-11
Abstract: o ,o 1-Diamino-alkanes of the formula (I) NH2-(CH2)2n+1-NH2 where n is 3 to 6, are obtained by converting the compounds in the equilibrium mixture <FORM:1086875/C2/1> to said o ,o 1-diaminoalkanes by heating the equilibrium mixture with an aliphatic hydroxy compound having 1 to 6 carbon atoms and an alkali metal hydroxide to obtain diaminocarbinols of general formula <FORM:1086875/C2/2> said diaminocarbinols or their acylates, wherein the acyl radical contains 1 to 3 carbon atoms, being then dehydrated in a liquid or vapour phase in the presence of a dehydrating catalyst to diamino alkenes of general formula <FORM:1086875/C2/3> where m1 + m2 is 5, 7, 9 or 11 and then catalytically hydrogenating said diaminoalkenes. The equilibrium mixture may be obtained by heating an appropriate nitrogenous compound, e.g. a lactam containing 4 to 7 carbons, an o -amino acid containing 4 to 7 carbons or a polyamide whose component unit is an o -amino acid of 4 to 7 carbons, in the presence of a base, the equilibrium mixture may be acylated prior to reaction with the hydroxy compound and the alkali metal hydroxide and the acyl groups may be removed from the diaminoalkane product by hydrolysis, e.g. with a mineral acid.
Patent GB-933565-A (GB)
Title: N-isopropyl-n-benzyl-hydrazine
IPC: C07C243/18
Filed: 1960-10-31
Abstract: The invention comprises N-isopropyl-N-benzyl-hydrazine and its acid addition salts, and the preparation thereof by reducing N-nitroso-N-benzyl isopropylamine, preferably with a mixed metal hydride reducing agent.  N-Nitroso-N-benzyl-isopropylamine is prepared from N-benzylisopropylamine and nitrous acid.  Specification 933,566 is referred to.
Patent GB-969044-A (GB)
Title: Quaternary ammonium compounds
IPC: C09K3/16
Filed: 1961-10-18
Abstract: The invention comprises sulphatobetaines of the formula: <FORM:0969044/C1/1> wherein R1 and R2 independently represent C1- 4 alkyl radicals, R3 represents a C1- 6 alkyl radical substituted by a C2- 18 acyloxy radical and R4 represents an ethylene or propylene radical. The above compounds are prepared by reacting a tertiary amine of the formula R1R2R3 N with equimolar quantities of ethylene oxide or propylene oxide and sulphur trioxide at a temperature of between -40 DEG C. and +20 DEG C. Amine reactants are exemplified by diethyaminoethanol esterified with acetic, propionic or stearic acid. An addition product of the formula C5H5N. SO3 is obtained by stirring sulphur trioxide into dry pyridine at 0-10 DEG C.
Patent GB-1510916-A (GB)
Title: Gas springs
IPC: A47B9/10
Filed: 1976-09-09
Abstract: 1510916 Gas springs STABILUS GmbH 9 Sept 1976 [11 Sept 1975] 37472/76 Heading F2S A gas spring comprising a piston rod 2 carrying a piston 3 movable in a cylinder 1 containing pressurized gas is provided with a frictional braking means which is automatically operated, in the event of gas leakage causing a pressure reduction in the cylinder 1, to hold the piston rod 2 relative to the cylinder 1. As illustrated, the frictional braking means comprises a hollow conical member 7 having an inner surface which is urged into frictional engagement with the piston rod 2 under the action of springs 9 in the event of pressure reduction in the cylinder 1. The cylinder chambers on opposite sides of the piston 3 are connected by a passage which may pass through the piston 3 and may be closable.
Patent GB-891646-A (GB)
Title: Improvements relating to the polymerisation of olefins
IPC: C08F10/00
Filed: 1960-11-01
Abstract: In a process for the polymerization of olefins there is employed a catalyst comprising (A) an organometallic compound of a metal of Group I, II or III of the Mendeleef Periodic Table and (B) two metal salts of which at least one (a) is of a metal of Group IVa, Va or VIa and at least one (b) is a salt of a metal of Group I, II, IV or VIII complexed with a nitrogenous organic base the molar ratio of (b) to (a) being at least 0,05.  The olefin may be ethylene, propylene or butene.  The salt (b) may be a lithium, beryllium, magnesium, cupric, cadmium, zinc, ferric, nickelous or titanium IV halide, e.g. chloride, and the preferred base is pyridine.  Examples describe the use of catalysts comprising aluminium triethyl and titanium trichloride with (1) CuCl2.2Py, BeCl2.2Py, ZnCl2.-2Py, CdCl2.2Py, MgCl2.4Py, NiCl2.4Py and FeCl3.4Py; (2) NiCl2.4Py; (3, 6 and 10) ZnCl2.-2Py; (4) CdCl2.2Py; (7) LiCl2.2Py; (8) TiCl4.2Py and (9) TiCl3.3Py; and aluminium triethyl and vanadium chloride with (5) ZnCl2.2Py.  Polymerization may be effected in liquid media, e.g. heptane and butane, and the products washed with methanolic hydrochloric acid and methanol.
Patent GB-1385006-A (GB)
Title: Process for the production of a bituminous composition
IPC: E01C7/26
Filed: 1973-08-08
Abstract: 1385006 Bituminous compositions BRITISH PETROLEUM CO Ltd 8 Aug 1973 [19 Sept 1972] 37582/73 Heading C3N A process for the production of a bituminous composition comprises forming a mixture consisting of an aromatic flux on oil, an elastomeric copolymer of one or more mono α-olefins and an unsaturated hydrocarbon with more. than one olefinic double bond and an endocyclic bridge comprising one or more methylene groups, and optionally up to 10 parts by weight sulphur per 100 parts of elastomeric copolymer, the amount or aromatic flux oil being 65-95% by weight of the sum of the aromatic flux oil and the copolymer, blowing the mixture with a gas containing elemental oxygen at a temperature of 150- 260‹ C. to form a concentrate, and dissolving the concentrate in unblown bitumen. Preferably the copolymer contains units derived from ethylene and propylene whilst the preferred cyclic olefins are dicyclopentadiene and ethylidene norbornene. The aromatic flux oil may be obtained by treating vacuum distillates and deasphalted vacuum residues with selected solvents. Aromatic extracts obtained during the production of lubricating oils, and coal tar fractions are also suitable. The bitumen is preferably a vacuum residue derived from a Venezuelan or Middle East' crude oil. The mixture obtained by blending the blown concentrate with the bitumen may be further blown with air' or another gas containing oxygen at 150-260‹ C.
Patent GB-1483798-A (GB)
Title: Method and apparatus for the indirect measurement of the longitudinal development of curved seats or grooves in mechanical workpieces
IPC: G01B7/00
Filed: 1974-08-28
Abstract: 1483798 Measuring arcuate length electrically MARIO POSSATI [trading as FINIKE ITALIANA MARPOSS SAS DI MARIO POSSATI & C 28 Aug 1974 [4 Sept 1973] 37667/74 Headings G1M and GIN The distance along an arcuate seat 1 of a rotor between points 3, 4, Figure 1, at the ends of the seat is obtained by measuring the straight line distance between points, measuring the curvature of the seat by measuring the distance of a point 7 on the arcuate surface from a line joining two other points 5, 6 on the surface and combining the results of the two measurements. A device for measuring the straight line distance between points 3, 4, Figure 2, comprises a bar 15 having members 16, 20 at its ends for engaging apertures 10, 11 adjacent points 3 and 4, and having a slot 23 to define a leaf spring hinge on the bar. The angle between the parts of the bar on the two sides of the hinge is detected by a transducer 26, the output signal of which is passed to a processing unit 31. A device for measuring the curvature of the seat, Figure 3, comprises a table 40 and stop 43 for locating the rotor and a gauging head 56. The gauging head comprises a frame 62 on which is mounted a pair of fixed feelers 67 for engaging the wall of the seat at spaced points 5, 6 and a movable feeler 69 for engaging the wall of an intermediate point 7. Movable feeler 69 is mounted on bar 63, the upper portion of which is pivotable by virtue of a slot 64 in the bar and the deflection of feeler 69 is measured by transducer 71, the output signal of which is passed to processor 31. Frame 62 is mounted on a base 50 by means of a bearing 55  and is biased to a datum orientation by means of a projection 74 engaging springs 75 which also engage abutments 77 on the base. Base 50 is slidable along a guide 51 and is pulled to a left hand datum position by electromagnet 53 until the feelers have entered the seat after which a spring 54 pulls the base to the right until the feelers contact the seat wall. The devices of Figures 2 and 3 may engage a seat to be measured simultaneously or in turn a memory device being provided in the latter case.
Patent GB-849112-A (GB)
Title: Process for the polymerisation of lower olefines
IPC: C08F10/00
Filed: 1956-12-10
Abstract: Olefinic hydrocarbons are polymerised in the presence of a catalyst formed from a compound of a metal of sub-Group IV(A), V(A), VI(A) of the Periodic Table and an aluminium trialkyl, and a halogenated hydrocarbon.  The hydrocarbon polymerised may be ethylene and/or propylene.  Halogenated hydrocarbons mentioned are methyl chloride, dichloromethane, carbon tetrachloride, methyl bromide, dibromomethane, ethyl chloride, ethyl bromide, sym dichloroethane, n-propyl chloride, isopropyl chloride, monochlorobenzene, o-dichlorobenzene, difluorodichloromethane, trifluoromonobromomethane, trifluoromonoiodomethane, sym difluoro-dichlorethane, sym tetrafluoro-dichlorethane, sym tetrachlorodifluorethane and mixtures.  The preferred catalyst is titanium tri- or tetrachloride with aluminium triethyl.  The product may be a liquid.  Specifications 799,392, 799,823 and 801,031 are referred to.
Patent GB-1162164-A (GB)
Title: Torso Encircling Garment
IPC: A41F1/00
Filed: 1966-08-23
Abstract: 1,162,164. Brassieres. EXQUISITE FORM INDUSTRIES Inc. 23 Aug., 1966 [5 May, 1966], No. 37834/66. Heading A3V. A brassiere comprises an elastic strap 38 extending round the lower edge of the cups 16 and side panels 18 to a releasable fastening 24 at the rear of the garment, the effective length of the strap being variable by means of a hook on each free end selectively engageable with eyelet holes 52, each free end being passed through a slot in its respective member of the fastening 24 and through a loop 60 of its respective shoulder strap 26. The straps include elastic portions 58.