baber/WOPTO huggingface dataset:
Patent GB-1425097-A (GB)
Title: Rotary structures
IPC: G03B39/04
Filed: 1973-02-14
Abstract: 1425097 High speed camera drum IMPERIAL METAL INDUSTRIES (KYNOCH) Ltd 11 Feb 1974 [14 Feb 1973] 7218/73 Heading B8M [Also in Division F2]  A rotary structure comprises a hub 7, a continuous circular rim 5 of thermoplastic material concentric with the hub and at least two equiangularly disposed spokes attached to and extending radially between the hub and the rim, the spokes being of filament-reinforced plastic material and having a common modulus such that upon rotation of the structure the radial expansion of each spoke is approximately equal to the radial expansion of the rim whereby there is negligible distortion of the circularity of the rims. In other words the moduli of rim and spokes is such that even if there was no connection between them the increase in length of each spoke, i.e. the point at which the centrifugal force is balanced by the reduced stress, is equal to the increase in radius of the rim determined by the balance between the centrifugal force and the stress needed to stretch the rim to the increased circumferential length. In the preferred embodiment a film may be placed on the inside of the rim of a camera drum of radius 180 mm. and capable of 25,000 r.p.m. comprises a rim of 60% by volume carbon fibre of modulus 29 Î 10<SP>6</SP> p.s.i. and spokes of 60% by volume E glass of modulus 6À8 Î 10<SP>6</SP> p.s.i. Each of the five spokes comprised two half spokes 9, 10, each half spoke being integral with the adjacent half spoke of the next spoke. The spokes are received in recesses in the hub and are attached to the hub and the rim by bonding. Adjacent the rim each half spoke is supplemented by a triangular crosssection wedge 11 which is bonded to the rim and the spoke. The wedges each of weight 0À005 lb increase the area of bonding between spoke and rim and provide additional mass thereby increasing the stress on the spokes. The correct ratio of rim modulus to spoke modulus may be obtained by varying the proportion of filament reinforcement from 40 to 80% by volume for the spokes and 30 to 65% by volume for the rim.
Patent GB-1099655-A (GB)
Title: An anode plate for an x-ray tube
IPC: H01J35/10
Filed: 1965-02-19
Abstract: At least the electron impact surface of the anode plate of an X-ray tube is made of an alloy consisting of at least 65% W, up to 12% Os and 0-25% other refractory metals.  The alloy may also contain 0-10% Re.
Patent GB-850648-A (GB)
Title: Improvements in disc brakes
Inventor: HODKINSON HAROLD
IPC: F16D65/18
Filed: 1956-03-09
Abstract: 850,648. Disc brakes. DUNLOP RUBBER CO. Ltd. March 4, 1957 [March 9, 1956], No. 7393/58. Class 103 (1). In a spot-type disc brake, the brake pads may be replaced by removal of the brake cylinders as a unit without disconnecting the hydraulic lines leading from the brake to the pressure source. In the embodiment illustrated, circular friction pads 17 mounted on metal backing plates 16 and mounted for axial sliding movement in a non-rotatable calliper housing 2, are forced into frictional contact with a rotatable disc 1 by means of hydraulically actuated piston and cylinder mechanisms 12, 9 which are mounted on each limb 3, 5 of the housing 2; the open end of each cylinder being presented towards and spaced a short distance from the housing 2. Each piston 12 is provided on the side remote from the base 26 of each cylinder 9 with T-shaped annular flange 13 which engages in a complementary-shaped slot 14 extending transversely through raised boss 15 on the backing plate 16. The backing plate 16 is thus normally movable with the piston 12 and the piston may be disengaged from the backing plate by transverse movement in line with the slot 14 in the backing plate 16 as seen in Fig. 3 to facilitate renewal of friction pads 17. Lugs 18 on backing plate 16 are each provided with a threaded hole 20 for the reception of an extractor to withdraw each piston to a position such that removal of the brake cylinders 9 may be effected. An automatic wear adjustment device is incorporated in each brake cylinder 9 comprising a split pin 23 frictionally engaging an axially extending central bore 22 in piston 12. The pin is provided with a head 27 which is mounted in a cap 25 secured centrally to base 26 of cylinder 9. A Belleville washer 28 is fitted between cap 25 and head 27 to normally force head 27 against base 26 of cylinder 9. The head 27 of the pin 23 is able to make a limited movement only against the washer 28, and this distance is equivalent to the required clearance between the associated pad 17 and the disc 1 when the brake is idle. Reference has been directed by the Comptroller to Specification 747,965.
Patent GB-138655-A (GB)
Title: Method of and apparatus for separating, or separating and recovering (and if desiredwashing) oil, grease, fat, or fatty matter or the like or other material from water or other liquids or for the separation of two liquids of different densities
IPC: B01D17/02
Filed: 1918-07-19
Abstract: 138,655. Linden, L. July 19, 1918. Tanks and containers.-In apparatus for separating lighter matters, such as oil or grease, and heavier matters from liquid, the liquid is caused to flow horizontally at a constant speed along an unobstructed passage above which is a chamber into which the grease &c. rise, and below which is a series of pockets in which the heavier matters settle. Specification 1266/16 is referred to. In the form shown, a number of vertical baffles 10 are arranged above and below the horizontal passage x. The pockets 25 for heavier materials communicate by openings controlled by valves 23 with a discharge passage 26. The inlet 5 and outlet 3 are arranged at such a height as to keep the oil &c. in the chamber 2 at a suitable level to be drawn off by the pipe 11. If the grease &c. is too thick to flow off easily it can be forced out by liquid pressure, the ordinary inlet and outlet 5 and 3 being closed. The separated grease &c. may be cut off from the rest of the apparatus by valves 20, 21 and treated with steam, hot air &c. Valves may also be provided for isolating the pockets 25. Baffles and agitating arrangements for breaking up lumps and pipes for heating and for introducing treating liquids may also be provided in suitable parts of the apparatus. The apparatus is stated to be applicable for treating water or sewage.
Patent GB-1411537-A (GB)
Title: Liquid electrophotographic developers
IPC: G03G9/135
Filed: 1972-07-12
Abstract: 1411537 Electro-photographic developer AGFA-GEVAERT 6 July 1973 [12 July 1972] 7444/75 Divided out of 1411287 Heading G2H A positive or negative liquid developer comprises an electrically insulating carrier liquid having a volume resistivity of at least 10<SP>9</SP> Ohm.cm and a dielectric constant below 3, a pigment or colouring agent as toner suspended in the carrier liquid, and dissolved in the carrier liquid (1) a bivalent or trivalent metal salt of an oxyacid derived from phosphorus containing at least one organic residue and (2) a polyurethane. The polarity of the toner particles is controlled by varying the relative proportions of the ingredients (1) and (2). The metal salt may be any of those specified in Specification 1151141. In the example, carbon black is suspended in a carrier liquid comprising mixed aliphatic hydrocarbons in which is dissolved a butyl methacrylate/stearyl methacrylate copolymer as a protective colloid and as fixing agent and to which is added solutions of (1) the zinc salt of mono-2- butyloctyl phosphate and (2) a polyurethan alkyd resin prepared from dehydrated ricinus oil, soya bean oil and a polyisocyanate.
Patent GB-1215113-A (GB)
Title: Starch-remoistening adhesive composition
IPC: C09J199/00
Filed: 1969-02-11
Abstract: 1,215,113. Remoistenable adhesive coatings. CORN PRODUCTS CO. 11 Feb., 1969 [6 March, 1968], No. 7447/69. Heading B2E. (Also in Division C3] Paper or fabrics are coated with a remoistening adhesive composition or fabric comprises a gelatinised starch chemically modified to such an extent as to be substantially free of set back in water, hide glue having a gel strength of at least 100g and providing a glue value of at least 2, a plasticiser and water in proportions such that the ratio of starch and hide glue combined to plasticiser is at least 4:1, and the composition contains from 30%- 70% solids by weight; and a composition suitable for preparing a remoistening adhesive composition comprises a composition as above with the gelatinised starch replaced by ungelatinised starch modified so that the starch is substantially free of set back after gelatinisation in water. Various plasticisers and modified starches are specified.
Patent GB-396149-A (GB)
Title: Improvements in the construction of electrical storage water heaters
IPC: F24H1/20
Filed: 1932-03-12
Abstract: 396,149. Heating water by electricity. CRISTIANI, L., 25, Via G. Pallavicino, Milan, Italy. March 12, 1932, No. 7462. [Class 30 (iii).] In a water heater comprising a heat-insulated casing a divided into two chambers by a heat-insulating wall b, water being drawn off from the inner chamber which contains the electrical heater d and the cold water inlet being connected to the outer chamber, the two chambers are in free communication at their upper ends. The wall b may comprise a double-walled jacket enclosing a dead air space or a non-circulating water space, or it may be provided with connections l, e to a central heating system so that it may form a second heating means for the water if desired.
Patent GB-1441364-A (GB)
Title: Iodophor compositions
IPC: C11D1/00
Filed: 1974-02-19
Abstract: 1441364 Iodophor DIVERSEY Ltd 22 Oct 1974 [19 Feb 1974] 7484/74 Heading A5E An iodophor comprises an iodine-nonionic surfactant complex, the surfactant component comprising a biodegradable alkoxylated wool grease or related substance (as defined) on to which composition said alkoxylated wool grease or related substance has been added. The related substances specified include wool grease fatty acids, anhydrous lanolin and its derivatives such as lanolin alcohols, lanolin fatty acids, liquid fractions of lanolin, acetylated lanolin, lanolin fatty acid esters and hydrogenated lanolin or any chlorinated water insoluble wool grease or related substance as above. Preferably there are present in the alkoxylated wool grease up to and including 8 mols of propylene oxide and between 5 and 15 mols of ethylene oxide, the total molecular weight of EtO-PrO being no greater than 900 and the molar ratio EtO/PrO being equal to or greater than 1. The weight ratio of total surfactants to iodine may be 1:1 to 100:1. In use the diluted iodophor contains an amount of iodine from 1000 to 6000 ppm.
Patent GB-540737-A (GB)
Title: Improvements in or relating to pressure relieving devices for fluids
IPC: F16K17/16
Filed: 1940-04-26
Abstract: 540,737. Pressure-relieving devices. HEASELDEN, H. April 26, 1940, No. 7507. [Class 135] An hydraulic system, particularly a domestic hot water system, is fitted with a frangible diaphragm pressure relieving device so arranged on a branch conduit that the diaphragm is normally isolated from the liquid in the system by air trapped in the branch conduit between the diaphragm and the liquid. In the form shown in Fig. 2 the diaphragm 25 of thin lead sheet or stout foil is clamped between the flanged ends 221, 231 of two pipes 22, 23, by a coupling nut 24. In a modification the two pipe sections screw directly into one another and the surface of the flanges have annular grooves to ensure a liquidtight joint. In another form the flanges are recessed to receive the edge of the diaphragm and are secured together by bolts. A spike or knife-edge may be fitted at 32 to facilitate rupture of the diaphragm when it bulges under excessive pressure.
Patent GB-382526-A (GB)
Title: An improved receiving arrangement for the telemetering of magnitudes occurring in practicalwork
IPC: G08C19/26
Filed: 1932-03-14
Abstract: 382,526. Electric signalling systems. LANDIS & GYR AKT.-GES., 1, Hofstrasse, Zug, Switzerland. March 14, 1932, No. 7512. Convention date, March 18, 1931. [Class 40 (i).] In a system for indicating at a distance measured quantities, the indicating instrument is included in a circuit controlled by a servomotor which is under the control of differential mechanism. As shown, a meter 2 transmits impulses over a circuit 29 at a rate dependent on the quantity being measured to operate ratchet mechanism 3 which through a spring 5 drives the sun wheel 9 of a differential mechanism under the control of a flywheel 6. The second sun wheel 11 is driven by a motor 28 connected in circuit with an indicating instrument 26 and a resistance 24 adjustable by a motor 20 which is controlled by contacts 17, 18, 21, the contact 21 being carried on the planet wheel. An alteration in the value of the measured quantity results in the rotation of the planet wheel to close the circuit of the motor 20 which runs in one or other direction to adjust the current in the indicating circuit and thereby alter the speed of the wheel 11 until balance is again obtained and the motor circuit is opened. Instead of the resistance 24, an induction regulator may be employed.
Patent GB-1014634-A (GB)
Title: Automatic photographic film developing apparatus
Inventor: LITTLE WILLIAM
IPC: G03D13/00
Filed: 1963-02-25
Abstract: 1, 014, 634. Developing apparatus for colour films. W. LITTLE. Feb. 25, 1963, No. 7545/63. Heading G2A. A method of developing colour films comprises supporting each film in a separate compartment adapted to hold a developer liquid, filling each compartment in a timed, predetermined sequence commencing with the compartment requiring the longest time of operation, and then withdrawing all the films from contact with the liquids after the longest immersion time has elapsed. As shown, a series of films to be developed is fixed to a carriage 84 mounted on rails 70, 60, and is lowered and raised at intervals into and out of a number of developing, washing, and fixing tanks 32, 34, 36..., by means of switches 85, 86... controlled by electronic programming means. Developer tank 32 is divided into compartments 50, 52, 54, 56, one for each film, and when the films have been lowered into these compartments, the compartments are filled with developer liquid from reservoir 78 or 80 in a timed sequence controlled by the programming means so that each film is in the liquid for the required time. The control also supplies gas for agitating the liquid and returns the liquid to its reservoir after the film has been raised.
Patent GB-116128-A (GB)
Title: Improvements in and relating to Coal Mining Machines.
Inventor: TUGWOOD RICHARD JOHN
IPC: E21C27/12
Filed: 1917-05-25
Abstract: 116,128. Tugwood, R. J., (Jeffrey Manufacturing Co.). May 25, 1917. Regulating delivery by opening suction and delivery valves.-In a mining machine provided with cutters adapted simultaneously to produce parallel kerfs, the upper cutter arm carries breaking- down means comprising a hydraulic jack 79 operated by a pump 85 driven from the shaft 11 by an eccentric 90 and a cross head 87 guided by side rods. The valves 93, 94 of the pump are controlled by an eccentric 98, whereby the valve 94 may be lifted alone to put the pump out of operation, or both valves may be lifted simultaneously to permit the water to flow from the jack 79 to the reservoir 96, a spring 82 then returning the ram 81 of the rack.
Patent GB-557862-A (GB)
Title: Improvements in or relating to tuning arrangements in radio receivers
IPC: H03J3/12
Filed: 1942-06-05
Abstract: 557,862. Wireless receiving apparatus. STANDARD TELEPHONES & CABLES, Ltd., and AMBROSE, D. M. June 5, 1942, No. 7674. [Class 40 (v)] A tuning indicating arrangement for a radio receiver provided with automatic volume control, comprises an indirectly heated temperature sensitive resistance having its heating coil connected in series with the plate circuit of a thermionic valve in the receiver subject to automatic volume control, the temperature sensitive resistance being connected in a local circuit with a tuning indicator and adapted to control the indicator in accordance with changes in the tuning adjustment. As shown the heating coil r is connected in the anode circuit of an I.F. amplifier V subject to A.V.C. and the temperature sensitive resistance R is shunted across an indicator lamp L fed by a constant source S through a resistance R 1. If R has a negative temperature coefficient the lamp glows brightly when the set is in tune. The resistance R may be in series with the lamp and may have a positive temperature coefficient. An arrangement is also described in which the indicator is a neon lamp, Fig. 2 (not shown).
Patent GB-1048234-A (GB)
Title: Production of quaternary chloroalkylammonium salts
Inventor: KOENIG KARL-HEINZ
IPC: H04L12/26
Filed: 1964-02-25
Abstract: Quaternary 2-chloroethylammonium salts of the general formula <FORM:1048234/C2/1> in which R denotes an alkyl radical having 1 to 3 carbon atoms, R1 denotes a hydrogen atom and X denotes an anion, are prepared by reacting an aqueous or water-containing solution of a corresponding quaternary 2-hydroxyethylammonium salt with hydrogen chloride at a temperature of more than 100 DEG  C. and at a pressure of more than 3 atmospheres gauge. Examples describe the preparation of chlorocholine chloride-(trimethyl-(2-chloroethyl)-ammonium chloride).
Patent GB-589479-A (GB)
Title: A machine for hedge cutting
IPC: A01G3/04
Filed: 1945-03-28
Abstract: 589,479. Hedge-cutters. LEE, W. S. K. March 28, 1945, No. 7791. [Class 6 (ii)] Relates to power-operated hedge-cutters of the type in which the cutter is mounted on an adjustable framework carried on a wheeled base. According to the invention, the framework consists of a telescopic derrick adjustable in both height and inclination, the power source being connected to the means for adjusting and setting the derrick and for driving the cutter. In the form shown, the wheeled base a is towed behind a tractor by means of a universallyjointed drawbar which, being driven by the tractor motor, also acts as a flexible drive for the mechanism. The drawbar is jointed to a shaft b fitted with two sprockets. One sprocket carries a chain e which drives a bevel gear transmission f, the bevel gear in turn driving a screw g inside a tapped sleeve h, thus providing a means for altering the inclination to the vertical of the telescopic derrick j. The bevel gear transmission incorporates a clutch, controlled by the lever r, enabling the motion of the screw g to be arrested or reversed. The second sprocket, carried by the driving shaft b, drives a chain w which operates a bevel gear joined to the lower end of a telescopic shaft (not shown) passing centrally along the axis of the derrick j. The upper end of this shaft carries a further bevel gear which drives a rotary cutter s. The length of the derrick may be altered by rotation of a hand-wheel o which is connected through a chain p to a sprocket m on which is fixed a crank-arm l. A link rod k connects the crankarm with a point j<SP>3</SP> on an inner section j<SP>2</SP> of the derrick and rotation of the crank-arm therefore causes extension or contraction of the derrick. The rotary cutter s is mounted in a pivoted bracket j<SP>5</SP> which may be fixed in one of several positions relative to the derrick by means of a pin j<SP>7</SP> engaging with holes in a disc x carried by the bracket j<SP>5</SP>. In a modification of the machine, an endless-chain cutter replaces the rotary disc cutter s.
Patent GB-1033213-A (GB)
Title: Improvements in or relating to a quick release mechanism
IPC: A44B11/25
Filed: 1963-02-18
Abstract: 1,033,213. Buckles. A. SELNES. Feb. 18, 1963 [Feb. 20, 1962], No. 7802/63. Heading E2A. A quick release mechanism comprises a base plate 4, a cover plate 1 pivotally mounted on the base plate about a first axis so as to be swingable towards and away from the base plate, first spring means 8 operable to urge the cover plate towards the base plate, a first aperture 12 in the base plate, a tongue member 5 insertable between the cover plate and the base plate and formed with a second aperture 5<SP>1</SP> located to be aligned with the first aperture upon insertion of the tongue member by a predetermined amount, a fastening device 2 pivotally carried on the cover plate for rotation about a second axis parallel to the first axis and dimensioned and located to extend into both the first and second apertures 12 and 5<SP>1</SP> when the apertures are aligned, stop means 9 carried on the cover plate and engageable by the fastening device to limit angular displacement of the fastening device about the second axis in the direction corresponding to the direction of insertion of the tongue member and second spring means associated with the fastening device and operable to oppose angular displacement thereof away from the stop means. The arrangement of the fastening device is stated to be such that insertion of the tongue member to the predetermined position causes movement of the fastening device out of the aperture 12 and hence movement of the cover plate against the bias of the spring 8, the fastening device then automatically engaging the apertures 12 and 5<SP>1</SP> when the tongue member is in the predetermined position. In the construction shown two sets of apertures 12 and 5<SP>1</SP> and two fastening devices are provided and the base plate carries a spring 15 which opposes insertion of the tongue member. Both the base plate and tongue member have slots which are intended to receive strap ends. The cover plate is pivoted between side walls 6 of the base plate and a guide plate is also carried between side walls 6 of the base plate and a guide plate 10 is also carried between these side walls to define a passage for the tongue member 5.