baber/WOPTO huggingface dataset:
Patent GB-471499-A (GB)
Title: Improvements in or relating to electric transformers
IPC: H01F38/06
Filed: 1935-12-02
Abstract: 471,499. Converting; changing wave form. BRITISH THOMSON - HOUSTON CO., Ltd. Dec. 2, 1935, No. 33371. Void. Convention date, Dec. 1, 1934. [Class 38 (ii)] Relates to an arrangement for producing peaky potentials, particularly for the grid control of discharge devices, and consists in mounting the primary winding on an unsaturated part of the core, and the secondary winding on a yoke operating at saturation. A three limb core, Fig. 5, may be used, with the primary windings U1 on the outer limbs and the secondary windings U2, to give voltages 180‹ phase displaced, distributed over the two parts of the yoke. In a modification of this, two three limb cores, with a common yoke is used. By varying the magnitude of the primary voltage the breadth of the peak and thus the moment of ignition is varied. The Specification states that in a rectifier this may be used to give a constant output voltage with a varying input voltage. The small sinusoid component of the peaky voltage may be eliminated by injecting a sinusoidal component 180‹ phase displaced. This may be obtained from a tertiary winding mounted on the unsaturated part of the core. Phase shift to vary the moment of ignition may be obtained by connecting a variable resistance in the primary supply. Fig. 13 shows the construction of a transformer having windings arranged as in Fig. 5. A three-limbed core 1, operating unsaturated, carries the primary windings 3, 4, the secondary windings 5, 6 being mounted on a highly saturated yoke 2.
Patent GB-291421-A (GB)
Title: Improvement in loading machines
IPC: E02F3/348
Filed: 1927-12-09
Abstract: 291,421. Whamond, D. June 4, 1927, [Convention date]. Directing and adjustably supporting portable endless-belt conveyers; feeding-devices; driving-gear.-A self-propelled loading machine which may be used to gather coal in a mine and deliver it to a truck inside or outside the mine, comprises a main conveyer frame 2 mounted on endless treads 7, and a supplemental conveyer frame 8, pivoted to the main frame at 11, and carrying a shovel 9, with actuating means which raises the frame 8 and also moves the shovel relatively thereto. As shown, a second supplemental frame 13 is pivoted on the main frame at 14 and the frames carry an endless conveyer 12 which receives material from the shovel and delivers it into trucks at A. The frames 8 and 13 are raised by hydraulic rams 21, 32 operated by a pump 35, Fig. 4, driven from the motor 44, and controlled by valve-operating levers 40, 41. The shovel 9 is pivoted at 10 and connected by links 28 to levers 22 pivoted at 23 on the frame 8. The levers 22 are connected by links 24 to the main frame 2, and are connected also to the rams 21, so that when the frame 8 is raised about its pivot, the shovel 9 is turned.about its pivot 10 on the frame. The conveyer 12 is driven by the motor 44, clutch 78, and sprocket 71 on the shaft 14. The clutch is controlled by a lever 79.
Patent GB-1404333-A (GB)
Title: Selectively switchable signal compressor/expander
IPC: H03G7/00
Filed: 1972-07-18
Abstract: 1404333 Companders DOLBY LABORATORIES Inc 18 July 1972 [2 Aug 1971] 33645/72 Heading H4R A selectively switchable compressor expander has a combining circuit 51A in a main path extending between an input terminal C and a second terminal 53 with a further path 26 supplying a second input to the combining circuit and including signal limiting means, preferably of the type described in Specification 1,279,634 using filters whose cutoff varies with frequency, which renders the input to the combining means from the further path only effective at low signal levels. A switch 24 is arranged in one position to connect the further path in a feedback loop from the output of the combining circuit to the second input thereto to form a compressor. In addition a second combining circuit 51B is connected across the further path, 26, in at least one setting of the switch, to combine the signals at the input and output of the further path to provide an expanded monitor signal at a first output terminal 25, while the other position of switch 24 forms the circuit into an expander feeding terminal 53. The arrangement shown in Fig. 2 provides a feedback compressor between the input and terminal 35 or 35A in the record position of switch 24 while the compressed signal is expanded in a feedforward expander, formed by combiner 51B, further path 26 and inverter 52B, to provide a monitor signal at terminal 25. A similar arrangement is provided by the circuit of Fig. 3 (not shown), with the feedback compressor and feedforward expander provided by different combining networks (51A and 51B) with switching to render one or other effective, and a further combining circuit (51C) connected permanently across the further path to provide an expanded monitor signal. The circuit of Fig. 2 provides a feedforward compressor, using combiner 51B and further path 26 or a feedback expander, using combiner 51A, further path 26, and inverter 52. A monitor point 25 is provided connected to the output of the expander and to the input of the compressor.
Patent GB-863496-A (GB)
Title: Improvements in and relating to bean snippers for cutting off the ends of bean pods
IPC: A23N15/12
Filed: 1958-10-21
Abstract: 863,496. Cutting off bean pod ends. CHISHOLM-RYDER CO. Inc. Oct. 21, 1958 [April 7, 1958], No. 33649/58. Class 28 (2). In snipping off the ends of bean pods projecting through the wavy openings 28 of a rotated drum 7 e.g. as in Specification 863,495 by external knives the drum periphery is built up of small arcuate segments 27 e.g. of polystyrene sprung into position between the spacer sleeves 24 on rods 22 connecting the drum ends and the intermediate subdividing discs or baffles 21. U.S.A. Specification 2,114,730 also is referred to.
Patent GB-1064673-A (GB)
Title: Improvements in or relating to pressure gauges
Inventor: ATKINSON HARRY HINDMARSH
IPC: H01J41/04
Filed: 1962-09-03
Abstract: 1,064,673. Electron beam apparatus; ionization manometers. SCIENCE RESEARCH COUNCIL. Aug. 28, 1963 [Sept. 3, 1962; March 27, 1963], Nos. 33664/62 and 12083/63. Heading H1D. A vacuum pressure gauge is constituted by a high-perveance electron beam device in which the concentration of the electron beam within a field-free drift space and hence the amount of electron current collected on a target outside the drift space varies in dependence on the number of ions produced within the beam; the gas pressure is determined by measuring the change in beam current as a function of time. The device comprises a high-perveance gun 1, 3, a chamber 5 and a target 8, the anode 3 of the gun being constituted by a mesh grid covering an aperture in the chamber 5 and the opposing aperture also being covered by a mesh grid 7. The cathode 1 is a planar array of directly heated tungsten wires. The gun may be designed to produce a converging beam. The anode of the gun may comprise a plate pierced by one or more slits or annular apertures. In a modification the gauge has a flat cathode and may be immersed in a strong axial magnetic field and the gauge may be located within the vacuum system of which the gas pressure is to be measured.
Patent GB-1280431-A (GB)
Title: Fire detector
Inventor: SASAKI KOJU
IPC: G08B17/113
Filed: 1970-07-10
Abstract: 1280431 Ionization fire alarms NITTAN CO Ltd 10 July 1970 [12 July 1969] 33731/70 Heading G1N [Also in Division H1] In an ionization fire alarm, the F.E.T. 12 whose gate 14 is connected to the junction of a reference ionization chamber 2 and a measuring ionization chamber 4, is a junction type whose gate leakage current increases with temperature and which is located in thermal contact with the common electrode 43(25) in the open chamber 4. Thus, even when no smoke exists in the chamber 4, a rise in ambient temperature due to a fire increases the gate leakage current of F.E.T. 12 which has the effect of increasing the current flow through the chamber 2 and thus the potential at the junction of the two chambers, which causes energization of the alarm, Fig.1 (not shown).
Patent GB-795765-A (GB)
Title: Improved compartment having a movable shelf and pivoted door
IPC: F24C15/16
Filed: 1956-11-06
Abstract: 795,765. Oven doors; oven shelves. GENERAL MOTORS CORPORATION. Nov. 6, 1956 [Nov. 17, 1955], No. 33830/56. Class 126 [Also in Group XIV] A compartment having a pivoted door and a shelf movably mounted on one of a number of pairs of shelf supports on the sides has a link connecting the door to a pivot member guided. for movement external to the compartment and parallel to the direction of movement of the shelf, and a detachable and adjustable connection between the shelf and the pivot member to ensure projection of the shelf when the door is opened. Links 60 connect the double doors 24 of an electric oven to a nylon pivot formed on a block 64, Fig 5, sliding in a guide 68 below the bottom 'wall of the oven. A rod 82 has a bayonet connection with the block 64, and at its front end carries an arm 88 with pivoted links 90 and connectors 94 which engage the front bar of the oven shelf 34. The rod 82 projects through a hole in a flange forming a door seat immediately below the oven opening, and a groove receives the arm 88 when the doors are closed. The shelf 34 runs in ball races 42 removably secured to a pair of shelf supports 30, Fig. 3, as described in Specification 776,123. Latches, 72 engage the ends of links 60 when the doors are closed. Specification 772,794 also is referred to.
Patent GB-338636-A (GB)
Abstract: 338,636. Turpin, F. A. May 16, 1929, [Convention date]. C l o s e d solid-fuel stoves; a i r - heating stoves; grates. - In an anthracite stove of the type in which the fuel descends between front and rear grates, the latter is formed by horizontal bars each comprising an upper vertical web 16 and an inclined lower web 17, the webs 16 preventing the fuel from escaping rearwardly. The top bar is formed with an horizontal plate 18 extending rearwardly and forming a baffle in the chamber 24 at the back of the stove, through which the gases pass to the flue outlet 25. Between the back of the chamber 24 and a screen 26 is formed an airheating chamber. The front wall of the stove is formed with an inclined partition 4 on which rest a cross-member 14 connecting the upper ends of the bars 13 composing the inclined front grate, the lower ends of these bars being free. The space in front of the grate is closed by a mica-panelled door 23, the top and sides of the door frame being formed by a flange 5 on the front wall and by forward extension of the lower parts of the sides of the stove casing. Air is admitted by apertures 22 in the front of the ashpit and passes as indicated by the arrows.
Patent GB-324455-A (GB)
Title: Improvements in and relating to brake blocks
IPC: F16D65/092
Filed: 1928-11-19
Abstract: 324,455. Kirchbach'sche Werke Kirchbach & Co., and Kattwinkel, R. Nov. 19, 1928. Blocks and shoes. -In a brake block for railway, tramway and vehicles of the kind which is adapted to co-operate with a flat brake disc and is provided with a renewable friction covering of fibrous material impregnated with an artificial resin or similar substance and hardened, the friction covering is provided on its rear surface with a flat projection of dove-tail or equivalent cross - section adapted to engage a correspondingly shaped recess in the carrier, the projection forming a unitary strip extending in the longitudinal direction of the covering and substantially tangentially to the direction of the thrust arising when the brake is operated. In the construction shown, the carrier 31 is cast with eyes 32 for attachment of the brake rigging and with a longitudinal recess 33 having inclined edges designed to receive the projections 45 on the rear of the friction covering 43, which is of substantially the same outline as the carrier. A filling-piece 34 having one edge 36 undercut is attached by rivets or screws 35 to fill one end of the recess 33, while an adjustable supplementary piece 37 also having an undercut edge 36a is adapted to be secured at the opposite end of the recess 33 by means of bolts 39 screwing into extensions 44 of the carrier. At its rear the piece 37 is provided with a hook 40 slidable in a slot 42 in the carrier and having an inclined surface coacting with an inclined surface 41 on the carrier so that, when the bolts 39 are tightened, the projection 45 is securely gripped by the undercut edges 36, 36<a> and at the same time the piece 37 is drawn towards and clamped against the carrier 31. Various modifications are described in which the projection 45 is of wedge shape and has its longitudinal edges bevelled to co-operate with the undercut edges of side strips attached to the carrier, the wedge being forced into position either by means of adjustable pieces similar to the parts 37 of the construction previously described or by means of wedges driven transversely across the carrier. In another modification the projection 45 is made of double wedge shape with the object of more effectively taking up the braking stresses when the vehicle runs forwards or backwards.
Patent GB-649982-A (GB)
Title: A process for the separation of naphthenic and paraffinic hydrocarbons by extractivedistillation
IPC: C07C7/08
Filed: 1947-12-23
Abstract: <PICT:0649982/III/1> Naphthenes are separated from paraffins by subjecting the mixture to extractive distillation using a solvent comprising a major proportion of a phenol of lower molecular weight and a minor proportion, e.g. 5 per cent, of water, under conditions and in proportions such that only one liquid phase is present in the distillation zone.  The vapours withdrawn from the distillation zone are rich in paraffins while the extract contains the naphthenes.  A phenol is chosen having a boiling point, in the presence or absence of water, sufficiently above the boiling temperature of the naphthenes that the two can be separated by simple distillation. Examples of mixtures which may be separated are: cyclohexane and trimethylbutane, cyclohexane and dimethylpentane, methylcyclopentane and n-hexane, methylcyclohexane and n-heptane, cyclopentane and dimethylbutane. The weight ratio of phenol-water mixture to hydrocarbon mixture is preferably about 3 : 1.  A hydrocarbon mixture of narrow boiling range containing cyclohexane and 2,2- and 2,4-dimethylpentanes, obtained by rectifying petroleum naphtha, is vaporized and fed through line 11 into column 12.  A mixture of phenol and water is admitted to the column through line 14, although part or all of the water may be admitted, if desired, through lines 18 and 19. Paraffin vapours flow over partial condenser 15 and leave the column overhead: they are condensed in condenser 20, and the condensate is separated as an upper layer from entrained aqueous phenol in separator 21.  The aqueous phenol is returned to column 12 through lines 22 and 14.  A solution of naphthenes in aqueous phenol is withdrawn from the base of column 12 through line 26, and distilled in column 27.  Vapours containing the naphthenes and water and perhaps some phenol, are removed from the head of column 27, and condensed in condenser 31.  The liquefied naphthenes are separated as an upper layer from water in separator 32.  The water may either be run to waste or returned to column 12.  Phenol containing some water is withdrawn from the base of column 27 and is returned to column 12 via lines 37 and 14.
Patent GB-1199956-A (GB)
Title: Folding Device
IPC: B65H45/22
Filed: 1967-07-25
Abstract: 1,199,956. Folding apparatus. KIMBERLYCLARK CORP. 25 July, 1967 [25 July, 1966; 19 Aug., 1966], No. 34055/67. Heading B8R. [Also in Division D1] An apparatus for longitudinally folding a web q, Fig. 6, into a Z-configuration q 1 , q 3 , q 4 , comprises a folding plate having angled flat portions 10<SP>1</SP>, 11<SP>1</SP> and 12<SP>1</SP>, a slot 241 being provided in the portion 10<SP>1</SP> and a bar 25<SP>1</SP> being attached thereto. The angled portions, the slot and the bar provide edges over which the web q may be passed to cause it to adopt the required Z-configuration. The apparatus may also be used to provide a single longitudinal fold in the web (Fig. 5, not shown), in which case the slot 24<SP>1</SP> and the bar 25<SP>1</SP> are not operative to guide the web. A series of plates A 1 , B 1 , A 2 , B 2  &c., Fig. 1, may be employed to fold and interleave a series of webs p, q, r, s and provide stacks of folded sheets arranged as shown in Fig. 7 or Fig. 9. A configuration as shown in Fig. 8 results when a series of webs are Z-folded and superimposed without interleaving. The devices B, Fig. 1, fold in the opposite sense to devices A (and are mirror images of the same) to provide stacks of sheets orientated as shown in Figs. 7, 8 and 9.
Patent GB-1481280-A (GB)
Title: Hydraulic chain-tensioning apparatus
IPC: F16H7/08
Filed: 1975-08-15
Abstract: 1481280 Chain tensioners DAIMLER-BENZ AG 15 Aug 1975 [22 Aug 1974] 34124/75 Heading F2Q In an hydraulically-actuated chain tensioning apparatus, a pivoted member 18 is urged against a chain 14 by a nose portion 27 of a piston 21 in a cylinder 20 and an hydraulic fluid under pressure is supplied through a non-return valve 26 located downstream of a supply duct 25, wherein the duct 25 slopes downwards in the direction of flow, and another passage 35 forming a throttling orifice leading into a low-pressure space 40 is disposed at a high level in the downward slope of duct 25. The source of hydraulic fluid may be the lubricating oil circuit of a reciprocating-piston engine, although such oil commonly includes a large amount of air entrapped. Air bubbles in the oil will rise up the sloping path of duct 25, in a direction opposite to that of the flow. Bubbles or foam reaching the passage 35 then become flushed away through the throttling orifice. The sloping arrangement of the duct 25 ensures that a reserve quantity of de-aerated oil is retained and does not drain away when the engine is stopped. A pressure-limiting valve 37 prevents any excessive pressure which might result from small pumping movements of piston 21 in oscillation when the cylinder is already full of oil.
Patent GB-953238-A (GB)
Title: Improvements in or relating to boot and shoe stiffeners
IPC: A43B23/16
Filed: 1962-09-24
Abstract: A shoe stiffener has its base material coated with a pressure-sensitive adhesive which is covered by a protective release paper adapted to be peeled off to expose the coating at the required time.  The base material consists of fibrous or fabric material stiffened with a suitable impregnant.  The pressure-sensitive adhesive may be of any suitable type e.g. a natural or synthetic rubber-based adhesive containing a synthetic resin and zinc oxide, and may contain a curing agent which causes the adhesive to dry out and set on the application of heat.  This curing may be effected in a rubber-based adhesive by applying the adhesive in two layers, one containing sulphur and the other an accelerator, the two layers mixing when heated.
Patent GB-771435-A (GB)
Title: Process for the manufacture of a quinuclidine derivative
Filed: 1955-11-29
Abstract: Quinuclidine - 2 - carboxylic acid is obtained by heating a 2-halo-3-(g -piperidyl)-propionic acid or a salt thereof in the presence of an acidbinding agent; when the product is obtained as a salt it may be converted into the free acid or vice versa. Suitable acid-binding agents are the oxides, hydroxides, carbonates and alkoxides of the alkali and alkaline earth metals, and organic bases such as pyridine or collidine.  The product forms salts with hydrohalic, sulphuric, nitric, phosphoric and acetic acids and also with metals of Groups I and II.  An example is given of the ring-closure of 2-chloro-3-(g -piperidyl)-propionic acid with sodium hydroxide, the starting material being obtained (as hydrochloride) by acid hydrolysis of its N-benzoyl derivative.
Patent GB-411436-A (GB)
Title: Improvements in or relating to window regulators
IPC: E05F11/38
Filed: 1932-12-03
Abstract: 411,436. Window regulators; frames. TERNSTEDT MANUFACTURING CO., 6307, West Fort Street, Detroit, Michigan, U.S.A.-(Assignees of Lakin, J. W. ; 3402, Fischer Avenue, Detroit, Michigan, U.S.A., and Field, H. C. ; 1517, London Street West, Windsor, Ontario, Canada.) Dec. 3, 1932, No. 34252. Convention date, Dec. 3, 1931. [Class 20 (iii).] A vehicle-window regulator comprises a pair of crossed levers which are pivotally interconnected at 21 between their ends, and which have their ends connected to or in engagement with the sliding sash 4 and a fixed frame member 6. One lever carries a toothed sector 8 engaging with a pinion of the operating mechanism. In the form shown, this lever comprises two separate members 18, 20 which are spaced apart laterally but rigidly interconnected at points 21 and 22, to provide a loop or slot for the reception of the other lever 19. The lever 18, 20 is pivoted at 7 to the frame member 6 of a vehicle door and slidably engages at 24 with a slot 13 of a bracket 12 secured to the sash. The lever 19 is pivoted at 25 to the bracket 12 and slidably engages at 26 with a slot 15 in a bracket 14 of the member 6. The slots 13 and 15 are parallel to each other and perpendicular to the guides 3 of the sash. The points of interconnection between the levers and the frame and sash are all equidistant from the pivot 21. The guides 3 may comprise a felt-covered rubber lining of channel section or, alternatively, the edges of the sashes may be guided between felt beads 39, Fig. 6, mounted in grooves 40 of a garnish moulding 37 and door panel 38.
Patent GB-883382-A (GB)
Title: Poles for overhead electric power transmission
Inventor: RITCHIE JAMES
IPC: E04H12/02
Filed: 1956-11-09
Abstract: 883,382. Posts. BRITISH INSULATED CALLENDER'S CONSTRUCTION CO. Ltd. Feb. 10, 1958 [Nov. 9, 1956], No. 34322/56. Class 20(1) A pole for supporting overhead electric conductors comprises an upper part formed from one or more tubes of resin bonded inorganic fibre, e.g. glass fibre and a lower part formed from one or more metal tubes. All the tubes are tapered so that the lower end of one will fit over or into the upper end of another in order to form a rigid joint. The tubes of the upper part of the pole are reinforced at their lower ends and extend below the lowermost conductor carried by the pole. Apart from the socket at their lower ends these tubes are filled with a rigid supporting material. Resins which can be used include epoxy/polyamide, silicone, polyester and phenol formaldehyde. Two or more poles may be used to form. a conventional H-pole. A method of making the upper part of the pole is described and this method forms the basis of divisional Specification 883,383. Specifications 745,317 and 791,809 also are referred to.
Patent GB-1384150-A (GB)
Title: Pyrimidine derivatives and process for preparing the same
IPC: C07B61/00
Filed: 1972-07-21
Abstract: 1384150 Pyrimidine derivatives LABAZ 12 July 1973 [21 July 1972] 34378/72 Heading C2C The invention comprises compounds of the formula wherein R represents a di- or tri-propylacetyl-, 2 - ethyl - 2 - butyl - acetyl or 2 - methyl - 2- pentyl-acetyl group and R 1  represents H or is selected from the same groups as R; and mono- and di-acid addition salts thereof. They may be obtained by heating a compound of the formula with the appropriate quantity of a compound of the formula wherein R 2  is 2-, 3- or 4-heptyl or 4-(4-propyl)- heptyl and R 3  is Cl or to form the free base of the required compound, which if required may be reacted with a stoichiometric quantity of an organic or inorganic acid to form the corresponding mono- or di-acid addition salts thereof. Examples are given for the production of these compounds. The above compounds possess antiprotozoan activity as well as toxoplasmicidal and antiallergenic properties. They may be administered orally or rectally in the form of coated or uncoated tablets, powders, capsules or suppositories.