baber/WOPTO huggingface dataset:
Patent GB-1525189-A (GB)
Title: Optoelectronic coupler
IPC: H03K17/795
Filed: 1976-10-28
Abstract: 1525189 Opto-electronic coupler INTERNATIONAL STANDARD ELECTRIC CORP 28 Oct 1976 [31 Oct 1975] 44831/76 Heading G1A In an opto electronic coupler comprising an emitter 3 and a sensor 4 separated by transparent insulating material 5 and enclosed in a housing of light proof material, the sensor 4 comprises two or more photo-voltaic cells. The cells are connected in series aiding. A circuit Fig. 3, (not shown) for controlling a switching transistor in response to pulses is described.
Patent GB-967529-A (GB)
Title: Improvements in or relating to piston rod packings for shock absorbers
IPC: F16F9/36
Filed: 1962-11-27
Abstract: 967,529. Stuffing-box packing; shockabsorbers. FICHTEL & SACHS A.G. Nov. 27, 1962 [Nov. 29, 1961], No. 44879/62. Headings F2B and F2S. Packing means for the piston-rod 3 of a shock-absorber comprises an elastic packing ring 5 surrounded by a rigid cylinder cover 4 and axially compressed so that it is urged inwards against the rod by a rigid ring 8 which is axially movable in the cover 4, abuts the packing ring 5 and is subjected on its free face to the fluid pressure in the shockabsorber cylinder 1. The cover 4 is located in the cylinder by a disc 9 and circlips 10. The lower face of the ring 5 is chamfered at its inner edge as shown and, in a modification, the ring is also chamfered at the outer edge of its upper face.
Patent GB-942429-A (GB)
Title: Nitrates of iminodibenzyls and a process for their preparation and conversion into nitro-iminodibenzyls
IPC: C07D/
Filed: 1961-12-15
Abstract: The invention comprises (1) a process for the preparation of 3-nitro-5-acyl-iminodibenzyls which comprises converting, under carefully controlled conditions, a 5-acyl-iminodibenzyl into its nitrate by reaction with nitric acid and then treating the nitrate with sulphuric acid; and (2) as new compounds, the nitrate intermediates of this process.  To form the nitrate, the 5-acyliminodibenzyl is dissolved in acetic acid at about 0 DEG  to 30 DEG C. and nitric acid is added dropwise. Examples describe the preparation of the acetyl, propionyl, benzoyl and isovaleroyl compounds, and also the reduction of the acetyl compound to 3-amino-5-acetyl-iminodibenzyl. Specification 942,428 is referred to.
Patent GB-1021535-A (GB)
Title: Equipment for measuring lengths or angles
IPC: G01B3/12
Filed: 1963-11-15
Abstract: 1,021,535. Machine tool details. HENSOLDT UND SOHNE, OPTISCHE WERKE A.G. Nov. 15, 1963 [Dec. 11, 1962], No. 45190/63. Heading B3B. [Also in Division G1] Means for measuring lengths or angles comprises a measuring scale 10 on an endless ribbon 6 which is pressed against a support 4 by at least one roller 7, 8 carried by a scale-reading device 1. The device is attached to a slide 2. As the slide is traversed, a rack 5 causes rotation of gears 28, 29 driving a counting mechanism 31 and frictional drive of the ribbon 6 round supporting rollers 7, 8, 9. The graduations on the ribbon are projected on to a screen 15 to fall between gauge marks 17. To centralize the visible graduation, the projection lens 11 can be adjusted by a graduated knob 20 and a screw 19. Rotation of the knob is indicated by the counting mechanism. 27. The counting mechanism 31 can be reset by a clutch knob 34 and can be set to count forwards or backwards by a reversing clutch controlled by a knob 36. The track 4 on which the ribbon is rolled is cleaned by scrapers 104, 105 and the device is held downwardly by springs 41, 42 and a magnet 44. In modifications, the track 4 is magnetic, or the ribbon is perforated and advanced by the gearing 29, or the ribbon carries magnetic blocks and is guided round polygonal rollers or magnetic rollers, or the ribbon carries rectangular prisms which serve to transmit images of a grid to cause light impulses to actuate a counting mechanism, or a square-toothed conducting line is printed on a plastic ribbon and the displacements are measured by a linear induction position device, or the ribbon has a slotted panel overlying it to produce pulses in photo-electric cells, or the ribbon carries light and dark areas co-operating with three photo-electric cells. The scrapers 104, 105 may be replaced by magnets. For reading a circular scale 110, Fig. 14, the arrangement is as shown. The ribbon may carry a scale and the magnets may be electromagnets.
Patent GB-1367119-A (GB)
Title: Transit systems
IPC: B61B5/02
Filed: 1971-09-29
Abstract: 1367119 Transport system B J HARTZ 29 Sept 1971 [1 Oct 1970] 45314/71 Heading B7L In a transport system compatible with existing vehicular traffic on a ground level roadway surface 56, a vehicle comprises: running gear 17 for movement within an elongated passageway 40 beneath the roadway surface 56, the running gear 17 having means such as wheels 24 for engaging running surfaces such as tracks 38 extending longitudinally along the passageway 40; an elongated strut means 15 supported by and extending upwardly from the running gear 17; and a passenger compartment 12 mounted on the strut means 15, the height of the strut means 15 being sufficient to position the compartment 12 above the existing traffic running on the roadway surface 56. A rubber cover 44 at the level of the roadway surface 56 covers the slot 42, through which the strut means 15 passes, in the absence of the strut means. Lateral stability of the vehicle is maintained by wheels 22 engaging stabilizer tracks 23. The strut means may comprise a pair of substantially vertical elements, as in Fig. 5 (not shown), each element extending upwardly from a separate carriage element, these carriage elements being articulated together to form the running gear. Alternatively, as in Fig. 7 (not shown), the running gear may comprise an air cushion between a horizontal plate (94) and the bottom of the elongated passageway, and air cushion stabilizers (96, 104) may also be used for lateral stabilization. The transport system may comprise several intersecting passageways and switching mechanisms such as in Fig. 3 in which wheels 136 and 138 may be selected by switching cylinders 140 and 142 to guiding surfaces 130 and 131 or 132 and 133 which guide the vehicle along the chosen passageway. Passenger loading platforms, Figs. 8, 9 and 10 (not shown), may be provided at the level of compartment 12 and may include a pedestrian overpass spanning the roadway.
Patent GB-1361392-A (GB)
Title: Photographic explosure controller
IPC: G01J1/42
Filed: 1970-09-24
Abstract: 1361392 Photographic exposure control C HANSARD 15 Sept 1971 [24 Sept 1970] 45483/70 Heading G2A Apparatus for controlling the exposure of a photo-sensitive material to light comprises a photo-cell 1 responsive to the intensity of light which controls a pulsing circuit 3 so that the frequency of the produced voltage pulses is dependent on the light intensity, a control resistor 5 manually adjustable in accordance with a given parameter through which the pulses are applied to a capacitor 6 which is manually adjustable to a predetermined value corresponding to the quantity of light needed for a desired exposure of the material, manually operable switching means to initiate exposure of the material to light and simultaneously to commence charging of the capacitor through the control resistor by the pulses, and trigger means 10 operative to stop the exposure when the charge in the capacitor reaches a predetermined value. The apparatus is used to control both the main and the flash exposure in a process camera, alternatively it may be used to control the  exposure in a contact printing box. In using the apparatus to make a half tone negative, the apparatus has, in addition to photocell 1 controlling the main exposure, a photo-cell 11 controlling the flash exposure, the exposures being made successively via change-over switches 9, 17. For both exposures, the width of the rectangular pulses are controlled by selection of resistors 4a, 14a forming part of pulse shaping circuits 4, 14 and this enables correction for the degree of enlargement to be allowed for. The adjustments of variable resistors 5, 15 are coupled so that for increasing highlight density the flash exposure time is reduced. The apparatus is initially set up by exposing a sample of a film batch to a reflection density wedge, after setting the capacitor value to an optimum value, the highlight density control (resistors 5) to zero, shadow density control (resistors 15) to a minimum value. The resulting image is examined to discover the region corresponding to 5% and 95% dot, and any adjustment of capacitor 6 made to produce 95% dot in an area of zero highlight density. Further test exposures using the step wedge are then made to determine the quantity of flash exposure necessary to produce a 5% and 95% dot, and the difference in the value of the bands gives the basic density of the batch of film, and the shadow density control (resistors 15) is adjusted to this value by returning the control to its minimum position, loosened on its spindle and reset so that its scale in by the measured value. To make the half tone negative, the highlight and shadow density values are determined using a densitometer, the apparatus adjusted to these values, and the exposures made.
Patent GB-1417524-A (GB)
Title: Nails for use in power-operated nailing guns
IPC: G06M7/00
Filed: 1973-10-02
Abstract: 1417524 Forming nail strips W H LEISTNER 2 Oct 1973 [20 Oct 1972] 45911/73 Heading B8C [Also in Division F2] In apparatus for forming a row of nails for passage through a glue station 22, nails are fed by fingers 23 to a pusher 31 which pivots the nail about an abutment 34 and then together with a pusher 32 pushes the slanted nail against a row of slanted nails. The row is situated in a channel between plates 24 and 27, with a plate 25 pressing the nails against plate 24. The head of each nail is cut away on one side so that the shanks of the nails are contiguous, various nail head constructions being given (see Division F2).
Patent GB-1426025-A (GB)
Title: Ignition timing control devices for engines
IPC: F02P5/10
Filed: 1973-10-02
Abstract: 1426025 Timing ignition NIPPONDENSO CO Ltd 2 Oct 1973 [3 Oct 1972 17 Nov 1972 18 Jan 1973 (2) 24 Aug 1973] 45928/73 Heading F1B An ignition timing control device comprises a vacuum advanced mechanism 15 capable of controlling the ignition timing in response to a negative pressure in a carburetter, a negative pressure line 17, 17 'intercommunicating between the vacuum advance mechanism and the carburetter and a thermosensitive valve 1 for communicating the negative pressure line with the surrounding atmosphere only when the engine temperature is within a predetermined temperature range between a lower setting point and a higher setting point. The thermosensitive valve 1 is described with reference to Fig. 1 (not shown). When the temperature of  the engine cooling water is less than a lower setting point the side port 2a of the spool 2 is closed by the inner wall of the bore 1d so that an input port 1a is communicated through an annular groove 1c with an output port 1b. As the temperature of the cooling water approaches and exceeds a lower setting point a, wax with a lower melting point is melted and increased in volume. As a result the diaphragm 11 is moved towards the left so that the spool 2 is also moved to the left and its side port 2a coincides with the annular groove 1c. As a consequence atmospheric pressure is transmitted to the input and output ports 1a and 1b through an opening 5a and air filter 3 and an air nozzle plate 4. When the temperature of the cooling water is further increased to and beyond a higher temperature setting wax with a higher melting point is melted and is increased in volume so that the spool 2 is further moved to the left. As a result the ports 1a and 1b, communicated with each other through the annular groove 1c, are isolated from the atmospheric pressure. A number of modifications of the thermosensitive valve of Fig. 1 are described in the Specification. The valve may control a branch pipe which is connected into the negative pressure line between the carburetter and the vacuum advance mechanism. It is stated that a solenoid controlled valve actuated in response to a signal from a thermosensitive switch may be utilized instead of the thermosensitive valve described.
Patent GB-1035328-A (GB)
Title: Earth leakage protective device
Inventor: MILLER JOHN ALAN
IPC: H02H11/00
Filed: 1963-11-21
Abstract: 1,035,328. Transistor relay circuits. WALLACETOWN ENGINEERING CO. Ltd. Feb. 18, 1965 [Nov. 21, 1963], No. 46105/63. Heading H3T. [Also in Division H2] An earth-leakage lock-out protective arrangement includes a silicon controlled switch SCS1, a constant bias generating means CBGM applying a bias to the switch of a value too low to render it conducting, pulse generating means PGM to apply to the switch an intermittent bias which with the constant bias renders the switch intermittently conducting and means RO for producing pulses antiphased with respect to those of the pulse generating means to render the switch non-conducting after each conducting period. An earth leakage relay RLA is connected in series with the switch SCS1 and is associated with delay means C4, C5, D4 so that the relay remains continuously operated by pulses of current through the switch SCS1 and maintains open its contacts RLA/1 in series with a lock-out relay RLB. In the event of earth leakage, current induced in the secondary winding of a core-balance transformer CBT applies a bias sufficient to render the switch continuously non-conducting so that the earth leakage relay RLA releases and closes its contacts RLA/1. The lock-out relay RLB is now energized and operated to open and lock-out a main contactor MC. When the main contactor is open and an earth fault exists, current flows through an auxiliary primary winding SAW of the core-balance transformer, auxiliary contacts CAC of the contactor, supply conductors SL and the fault path. Current is then induced in the secondary winding FAW of the transformer and biases the switch SCS1 so that it. is non-conducting, the relay RLA is not energized and the contactor MC cannot be closed.
Patent GB-1022176-A (GB)
Title: Magazines for fastener driving tools
IPC: B25C1/04
Filed: 1962-11-06
Abstract: 1,022,176. Stapling machines. SIGNODE CORPORATION. Nov. 6, 1962 [Nov. 15, 1961], No. 46157/65. Divided out of 1,022,174. Heading B4C. The subject-matter of this Specification is substantially the same as that of Specification 1,022,174, but the claims relate to a magazine 13 comprising a rail 71 to support a row of fasteners, such as staples 12, urged forwardly by a spring- pressed follower 72 and retained downwardly on the rail by an element 86.
Patent GB-1214729-A (GB)
Title: A method of and means for positioning the wheeled carriage of an overhead crane
Inventor: HIRATA KIYOTAKA
IPC: B66C13/46
Filed: 1968-09-30
Abstract: 1,214,729. Optical alignment apparatus. K. HIRATA. Sept.30, 1968 [Sept. 30, 1967], No.46356/68. Heading G2J. [Also in Divisions B8 and F4] In a method of positioning the winch-carrying carriage 2 of a conventional overhead travelling crane a spot-light 6 mounted on the carriage 2 is adjusted so that a spot of light is emitted downwardly in the same direction in which the extension of lifting rope 7 is paid out. The carriage 2 may thus be adjusted in position right above an article F to be lifted. Fig. 2 shows one embodiment of the spotlight 6. Condensing lenses 12 collect light from a lamp 11 and pass it to an aperture 14 imaged by lens 15 on to the article F. In a modified spotlight, Fig.5, a lamp 11<SP>1</SP> of high brilliance has a point source imaged by reflector 33 on to an aperture 34 projected on to the article F by lens 35. Electrical components 25 of the lamp 11<SP>1</SP> and its upper and lower base members 19, 20, but not the bulb body itself, are cooled by a fan 21.  In a modification shown in Fig.10 lamp 11<SP>1</SP>, reflector 33 and holder 50 can be removed as a unit for replacement of lamp 11<SP>1</SP>.
Patent GB-995377-A (GB)
Title: Convertable shelter
IPC: E04H15/30
Filed: 1961-12-28
Abstract: 995,377. Greenhouses and tents. M. MESSER. Dec. 28, 1961 [Dec. 30, 1960], No. 46371/61. Heading E1A. In a greenhouse, tent or shed consisting of a series of spaced arcuate frames 1 having a covering, for example of plastic, each frame consists of two symmetrical risers 4 interconnected at the top 5 and each riser is formed by top and bottom members 8, 9 with, if desired, the inter-position of at least one intermediate member therebetween. The various members of each frame are pivotally connected by locking means which when released permit the top and base portions of the greenhouse etc. to be reassembled into the different positions shown. The angle of inclination of the top portion remains constant whereas that of the base portions is variable without effecting its rigidity. For method of attaching the covering to the frame the Specification should be referred to.
Patent GB-1499660-A (GB)
Title: Pigment compositions
IPC: C08L71/02
Filed: 1974-10-26
Abstract: 1499660 Pigment compositions CIBA-GEIGY AG 8 Oct 1975 [26 Oct 1974 18 July 1975] 46407/74 and 30160/75 Heading C4A [Also in Division C3] A solid pigment composition comprising pigment and at least 5% by weight with respect to the weight of pigment of a complex formed from one or more predominantly non-ionic polyether surfactants derived from ethylene oxide and a polymeric carboxylic acid having a molecular weight as free acid of at least 1500, may be prepared by treating a dispersion of the pigment either before, during or after its synthesis with at least 5% by weight with respect to the pigment of the surfactant and a solution of the polymeric carboxylic acid and reducing the pH to 4 or below to form a complex between the surfactant and the acid which precipitates and is deposited on the pigment and separating the pigment composition thus obtained. The pigment may be incorporated into emulsion paints and inks. In Example 20 a yellow pigment is added to a solution of waterbased varnish of the shellac type and water.
Patent GB-1061720-A (GB)
Title: 6-substituted steroids
IPC: C07J75/00
Filed: 1963-11-25
Abstract: The invention comprises steroids of the formulae <FORM:1061720/C2/1> <FORM:1061720/C2/2> <FORM:1061720/C2/3> (wherein R is hydrogen or C1- 6 alkyl; R1 is C1- 6 alkyl; R0 is hydrogen, hydroxy or keto; Y is a dihydroxyacetone side chain protected as a bismethylenedioxy derivative; and Z is an ethylenedioxy or bis-alkoxy radical) and the preparation of corresponding D 4,6-3-keto-6-alkyl steroids by hydroxylating a corresponding 6-unsubstituted -D 5-3-ketal to form compounds of Formula II, oxidizing these to compounds of Formula III, alkylating these with an alkyl Grignard reagent to form compounds of Formula IV and dehydrating and hydrolysing these.  Hydroxylation is preferably effected with osmium tetroxide in a basic solvent, and oxidation with chromium trioxide in pyridine.  If an 11-keto group is present, this is desirably reduced, e.g. with sodium borohydride, to an 11b -hydroxy group, before dehydration and hydrolysis, which may be effected with a mineral or organic acid.  If a mineral acid is used the bismethylenedioxy sidechain remains intact.  Examples are given.  3 - Ethylenedioxy - 17a ,20: 20,21 - bismethylenedioxy - 16a - methyl - pregn - 5 - en - 11 - one is prepared from the D 4-3-one and ethylene glycol. Other starting materials are prepared similarly.
Patent GB-1319658-A (GB)
Title: Method of colour anodising aluminium and aluminium alloys
IPC: C25D11/14
Filed: 1970-09-30
Abstract: 1319658 Anodizing aluminium VEREINIGTE ALUMINIUM-WERKE A G 30 Sept 1970 [8 Oct 1969] 46564/70 Heading C7B In a process for colour anodizing Al in an electrolyte of maleic acid which may contain sulphuric and oxalic acid, the cathode 2 is housed in a container 4 of an ion-permeable material, e.g. fixed alumina silicates, containing an electrolyte of an organic acid, e.g. citric, oxalic or sulphosalicylic, with sulphuric acid.
Patent GB-1157509-A (GB)
Title: Colour Reversal Diffusion Transfer Process
Inventor: BRAID ARTHUR WILLIAM
IPC: G03C8/56
Filed: 1966-10-18
Abstract: 1, 157, 509. Photographic colour transfer receptor sheet. ILFORD Ltd. Oct. 13, 1967 [Oct. 18, 1966], No. 46584/66. Heading G2C. A receptor sheet for a colour reversal diffusible colour-coupler or dye-coupler transfer process comprises a sheet support carrying at least one layer containing a polymeric film-forming substance such as gelatine and a mordant comprising at least one polymeric quaternary salt which is derived from a monomer of the formula:- where X, Y and Z are each alkyl, or X is alkyl and Y and Z together form a non-aromatic heterocyclic ring, or X, Y and Z together form an aromatic heterocyclic ring, and Q is an anion.
Patent GB-1449840-A (GB)
Title: Alkylation process
IPC: C07C15/107
Filed: 1973-10-08
Abstract: 1449840 Reaction of polybutene with benzene BRITISH PETROLEUM CO Ltd 23 Sept 1974 [8 Oct 1973] 46803/73 Heading C3P [Also in Division C5] Benzene is alkylated with a polybutene in the presence of AlCl 3  said polybutene being prepared by polymerizing a mixed C 4  feedstock containing between 2 and 20 wt. per cent isobutene and not less than 20 wt. per cent n-butenes based on the total feedstock. The average molecular weight of the polybutene is preferably not more than 1000, e.g. 300-600. A modifier such as Cu 2 Cl 2 , NaCl, HCl or an organic chlorine-containing compound may be added to the AlCl 3  alkylation catalyst. The polymerization catalyst may be AlCl 3 .
Patent GB-982631-A (GB)
Title: Improvements in or relating to automobile frame structures
IPC: B60G3/00
Filed: 1962-12-12
Abstract: 982,631. Vehicle frames. ANDRE CITROEN S.A. Dec. 12, 1962 [Dec. 15, 1961], No. 46960/62. Headings B7D and B7H. A motor vehicle frame comprises a transverse cylindrical member 1 which may form or may house the fuel tank and longitudinally extending hollow members 2 and 3 which may be coplanar, or as shown, offset, and which are provided with cross-bracing members 4 and 5.
Patent GB-1340370-A (GB)
Title: Process for the purification of o-hydroxydiphenyl
IPC: C07C37/06
Filed: 1971-10-08
Abstract: 1340370 Process for the purification of ohydroxydiphenyl BAYER AG 8 Oct 1971 [20 Jan 1971] 46962/71 Heading C2C A process for the purification of o-hydroxydiphenyl produced by the gas phase catalytic dehydrogenation of o-cyclohexenyl-cyclohexanone, o - cyclohexylcyclohexanone, o - cyclohexylidenecyclohexanone, o - cyclohexylphenol, and/or o - phenylcyclohexanone, in which the o-hydroxydiphenyl is fractionally distilled to yield a residue containing less than 0À05% by weight of diphenyl, less than 20% by weight of diphenylene oxide, less than 20% by weight of o-cyclohexylphenol, and at least 75% by weight of o-hydroxydiphenyl and the residue is then crystallized.