baber/WOPTO huggingface dataset:
Patent GB-475021-A (GB)
Title: Improvements in change speed gears for chain drives
IPC: B62M25/04
Filed: 1937-06-15
Abstract: 475,021. Change-speed driving-mechanism for cycles. VANTOCH, E., and KNEIFEL, J. June 15, 1937, No. 16587. [Classes 136 (i) and 136 (ii)] [Also in Group XXIV] In change-speed driving-mechanism for cycles of the type in which the chain 1 is moved laterally for selective engagement with driven sprockets 2, 3, 4, of different sizes, each sprocket is provided, by reduction of tooth thickness, with two spaced marginal ramps 6, 7 sloping in opposite directions, the corresponding ramps on adjacent sprockets sloping in the same direction and forming a substantially helical path for the passage of the chain from one sprocket to the other. One or more teeth may be entirely omitted on one or more of the sprockets where the ramp is thinnest, i.e. where the helical path passes from one sprocket to the other. The chain is shifted by a spring-urged rocking fork 8 connected by a cable 12 to a hand-lever 14, which simultaneously controls through a cable 21 a lever 20, carrying a jockey pulley 19. The lever 14 is spring-pivoted, and is pressed laterally by a blade-spring 18 to engage a peg on the lever with a selected hole in a quadrant 16.
Patent GB-935009-A (GB)
Title: Improvements in coatings for foundry moulds
Inventor: GLOVER CHRIS
IPC: B22C23/02
Filed: 1961-05-08
Abstract: 935,009. Mould and core materials. UNITED STATES INSULATOR CO. Ltd. May 8, 1962 [May 8, 1961], No. 16626/61. Class 83 (1). A mould coating comprises at least one primary layer consisting substantially entirely of metal with a major proportion of Ni and a minor proportion of Cr with or without other metals, and at least one secondary layer containing alumina and a metal component having a major proportion of Ni and a minor proportion of Cr with or without other metals, the alumina content of at least the outermost secondary layer being at least 15%. A final layer of alumina may be applied and the surface sealed as with a silicone resin. The layers are applied by flame-spraying, and the mould surface may be roughened.
Patent GB-275387-A (GB)
Title: Improvements in and relating to wireless receiving circuits
IPC: H04B1/16
Filed: 1926-07-02
Abstract: 275,387. Garrod, A. J. July 2, 1926. Thermionic amplifiers and detectors. - In wireless receiving-circuits of the kind employing a series of resistance-coupled valves a, h, m, n with coupling-resistances e, m<2> of the order of megohms. the resistance j in the plate circuit of the detector valve is of a substantially lower value in order that a reaction coil k included in this circuit may carry effective currents. An oscillatory circuit, which may comprise a frame aerial b, loading coil c and tuning- condenser d is connected across the grid and filament of the first valve a. The grid leaks h<1>, m<1>, n<1> connected to bias batteries r may be of the order of five to ten megohms. The plate resistances e, m<2> may be of three megohms and are of the type in which the ohmic resistance does not vary substantially with the voltage applied by the battery f. The resistance j may be of 500,000 ohms. The coupling-condensers g, l, q may be of 500 m.m.f. capacity. The filaments of the valves a, m may be run at a low, temperature. A reaction coil p may be interposed between the plate of the first valve a and the coupling-condenser g as described in Specification 275,388. The high-frequency amplifier may be omitted.
Patent GB-665503-A (GB)
Title: Improvements relating to the mechanical handling of workpieces
IPC: B65G17/20
Filed: 1949-06-23
Abstract: 665,503. Endless conveyers. MEAKIN, Ltd., J. & G., and MEAKIN, B. R. G. June 23, 1950. [June 23, 1949] No. 16648/49. Class 78 (i). A mechanical handling system for workpieces consists of a series of operating stations arranged alongside an endless conveyer which is arranged on a gradient past the stations, the conveyer supporting a series of rack structures each of which consists of a plurarilty of superposed racks or shelves, the arrangement being such that a different rack of each structure arrives opposite each of the various operating stations. As applied to a system for drying pottery, the conveyer extends in two parallel runs, one of which is shown at 10, and each run extends for a part of its length along a gradient, on which it is supported by a rail 11, Each rack structure 15 is suspended from the conveyer and has six racks or shelves S<SP>1</SP> ... S<SP>6</SP>. Alongside the conveyer are six corresponding loading tables D<SP>1</SP> ... D<SP>6</SP>. It is arranged that each of the shelves S<SP>1</SP> arrives at the correct loading level with respect to table D<SP>1</SP>, each shelf S' at the level of table D<SP>2</SP>, and so on. Six further tables for unloading are provided along the gradient portion of the parallel return run of the conveyer, not shown, the loading and unloading stations being opposite each other. In operation, articles are placed first upun the top racks at station D<SP>1</SP>, then on successively lower racks at the subsequent stations, until each rack structure is full, after which it passes through a drying chamber at one end of the conveyer. Upon leaving the chamber, the articles are removed from the bottom rack first at the unloading station opposite station D<SP>6</SP>, and from the remaining racks at the corresponding unloading stations.
Patent GB-726029-A (GB)
Title: Improvements in and relating to holders for thermionic valves, electrical plugs or other electrical devices having projecting terminal prongs
IPC: H01R33/76
Filed: 1953-06-17
Abstract: 726,029. Holders for thermionic valves. CINCH MANUFACTURING CORPORATION. June 17, 1953 [Aug. 25, 1952], No. 16783/53. Class 38 (1). A valve holder comprises an insulating body 1 with contact-receiving enclosure portions 6 on the upper face 2 and complementary projections 11 extending from a retainer wall 10 on the lower face. The resilient contacts 22 are each bent from one piece of metal, the wing portions 25 receiving a contact pin and the portion 23 forming a soldering tag. Each contact is sprung into place in an aperture 12 the wings 25 engaging under abutment shoulders 16 and a tab 24 extending rearwardly from the portion 23 resting on a shoulder 21. The portion 23 passes through an aperture in the projection 11.
Patent GB-1459435-A (GB)
Title: Weighing and bag filling apparatus
IPC: B65B1/32
Filed: 1973-04-07
Abstract: 1459435 Weighing and bagging devices; driving endless conveyers AUTOPAOK Ltd 5 April 1974 [7 April 1973] 16810/73 Headings B8A and B8C [Also in Division G1] A weighing and bag filling apparatus includes a pair of alternately operable parallel conveyers 10,11 provided at their front ends with weighing and bagging devices 27 and 28. Located at the rear of the conveyers is a hopper 26 reciprocable transversely above the conveyer to direct articles, such as carrots, to be bagged on to one or the other conveyer. Each weighing and bagging device includes a chute 29 over which the bag 30 is clamped lightly by a pivoted weight 31 or under greater pressure by a pad 37 actuated by a solenoid 35. The chute is carried by a pivotable member which moves downwardly as its associated bag is filled. This movement of the member causes the rear end of lever 32 to move upwardly until a means 33 actuates a microswitch 34. Actuation of the microswitch, signifying that sufficient articles have been fed to the associated bag, causes the drive of the associated conveyer to be stopped, the drive to the other conveyer to be actuated, and the hopper to be moved to a position above the newly actuated conveyer. Transfer of the drive in turn causes a microswitch 38 to be actuated, which microswitch actuates the solenoid 35 controlling the pad 37 holding the filled bag to allow that bag to slide under gravity from its chute, insufficient resistance being provided by the pivoted weight. Microswitch 38 also causes the solenoid 35 of the pad 37 of the chute of the newly actuated conveyer, to which chute the empty bag is clamped by the associated pivoted weight, to be actuated to apply a firm clamping pressure in readiness for the bag to receive articles. The conveyers 10 and 11 are driven by their rear pulleys 16 and 17 which are pushed apart by a spring 18 into contact with the friction linings 15 of clutch plates 13, 14 mounted upon a driven shaft 12 over which the pulleys are loosely and rotatably mounted. Each pulley is provided with a side plate 18, 20 of ratchet configuration which plates are engageable by one or the other end of a lever 22 pivoted about a longitudinally extending shaft 21. The shaft 21 also carries an arm 23 the ends of which are actuated by solenoids 24 and 25. In use, when one bag is full and a microswitch 34 is actuated, one of the solenoids 24 or 25 is actuated to pivot the lever 22 so that one of its ends engages the side plate of the conveyer associated with the filled bag and the other end is moved free of the side plate of the other conveyer. This causes the pulley of the conveyer associated with the filled bag to stop and this halts the drive of that conveyer whilst it releases the pulley of the other conveyer to rotate with the shaft and thus drive the other conveyer.
Patent GB-515577-A (GB)
Title: An improved apparatus for handling liquid-borne solids
IPC: B65G53/30
Filed: 1938-06-07
Abstract: 515,577. Transmitting liquid-borne solids. PULSOMETER ENGINEERING CO., Ltd., and PRICE, A. V. June 7, 1938, No. 16814. [Class 102 (ii)] Apparatus for transmitting liquid-borne solid and buoyant matter comprises an intercepting chamber, a storage receptacle for the liquid, and a plate or cover to the intercepting chamber forming a weir which enables the liquid to pass into the receptacle whilst retaining solid and buoyant matter within the intercepting chamber. In the form shown, the inlet sewer B is fitted with a valve B<1> and leads into the intercepting chamber C in which the solid and buoyant matter is retained. The liquid passes over a weir D to a pipe E leading to a storage chamber formed by the lower end of the cylindrical vessel A. The inclined cover plate F may be adjustable to vary the weir, and its central part F' may be formed with ventilation openings. Rising of a float L operates a switch K controlling the electric motor J<1> of a centrifugal pump J so that the liquid is forced up the pipe E under pressure. The solid and buoyant material accumulated in the intercepter C is thereby entrained and expelled through a delivery pipe G fitted with valves H, H'.
Patent GB-838408-A (GB)
Title: Improvements relating to the ramming means of firearms
IPC: F41A9/42
Filed: 1958-05-27
Abstract: 838,408. Ramming mechanism for guns. BOFORS A. B. May 27, 1958 [June 8, 1957], No. 16858/58. Class 92 A firearm has a rammer-lug 12 moved longitudinally of the axis of the bore by a spring loaded lever 1 pivoted outside the rammer's course at 2 and moving through a position in which it is perpendicular to the rammer's course. Fig. 1 shows the pre-ramming position in which lever 1 is held by a pawl 4 on a locking member 5 which turns on a shaft 6 and is retained by a pawl 8. The lever 1 has two arms, one on either side of the lug 12 which pivots on a shaft 10 whose ends extend through recesses 9 . at the ends of the arms of the lever into longitudinal slots 11 in either side of the rammer casing. Release of the pawl 4 permits a spring 3 to force lever 1 forward and cause the lug 12 to ram a cartridge 14. The lug engages the cartridge bore and is retained there owing to pressure of its rear end 15 on a flat surface 27 on the rammer casing. During recoil a guide (not shown) on the breech-ring depresses a roller 22 and operates a linkage 17-18-19-20- 21 to recock the lever 1 and spring 3, moving the lug 12 back on to a spring buffer 26. A buffer 16 brakes the lever 1 at the end of its forward movement, but if no cartridge is present, the construction of the lug is adequate to absorb the shock of hitting the casing.
Patent GB-346607-A (GB)
Title: Improvements in or relating to keying, repeating and like apparatus for electric signalling
IPC: H04L27/04
Filed: 1930-05-31
Abstract: 346,607. Code telegraphy. MARCONI'S WIRELESS TELEGRAPH CO., Ltd., Marconi House, Strand, London.- (Assignees of Finch, J. L. ; Port Jefferson, Long Island, New York, U.S.A.) May 31, 1930, No. 16903. Convention date, July 23, 1929. [Class 40 (iii).] A keying or relay arrangement, particularly intended for repeating code signals from a land line to a radio transmitter, comprises a pair of reciprocally-coupled valves so arranged that for a marking signal one is blocked and the other conducting, whilst the reverse obtains during a spacing signal. Signals received in distorted form over the line are thus restored to square shape before re-transmission. The signals transmitted by a key 2 over a line 4 are amplified in the valve 8 and are applied in opposite phase to the grids of valves 12, 14, which are biased by connecting their filaments and the mid-point of the input coil to suitable points on the battery 44. The plates are connected through resistances 30, 32 to a positive point on the battery 44, and each plate is connected to the grid of the other valve through a reversed battery, or as shown through a resistance 26, 28. An incoming signal of one sign throws the grid of valve 14 positive, increases its plate current, and decreases its plate voltage. The lowered plate voltage is transferred via resistance 28 to the grid of the other valve 12, which consequently has its plate current reduced and its plate voltage increased. Through resistance 26 this enhanced voltage is applied to the grid of valve 14 in the same sense as the incoming signal. In this way each incoming signal above a certain datum level causes one of the valves to pass its full saturation current, and blocks the other valve. The signal of opposite sign reverses the conditions of the valves. In a modification, the input to the valves is taken from a centre-tapped resistance instead of the transformer 10, thus operating by signal current strength, instead of rate of change of current. The signal voltages arising at the plate of the valve 14 are applied to the grid of a valve 18 and modulate the output from a carrier wave source 20.
Patent GB-917553-A (GB)
Title: Improvements in or relating to magnetic storage devices
Inventor: MOORE ARTHUR CYRIL
Filed: 1958-05-27
Abstract: 917,553. Magnetic storage devices. NATIONAL RESEARCH DEVELOPMENT CORPORATION. May 14, 1959 [May 27, 1958], No. 16923/58. Class 38 (2). [Also in Group XXXIX] A magnetic digital storage device comprises a thin magnetic film 1 of nickel-iron alloy (80- 20) on a glass backing and a number of conductors 2 extending parallel to and close to the film. A current in a conductor magnetizes the film in the local area 3 when the magnetic field exceeds a critical value. The film may be initially magnetized in the direction of the arrow H as it is deposited by high-vacuum evaporation on to heated glass. Reading and writing conductors 2B, 2A, Fig. 3, may be arranged on opposite sides of the film 1 and the backing 4. Storage matrix.-X and Y conductors, Fig. 4, are arranged over the film, as shown, so that they have short parallel sections at the crosspoints. The magnetic vectors of the X and Y film are then in line on the cross-point regions. The currents are adjusted so that the field production at a cross-point exceeds the critical value whilst the individual fields fall short. In another arrangement, Fig. 5, two orthogonal sets of writing conductors 11, 12 are displaced 45 degrees from one or two orthogonal sets of reading conductors 9, 10.
Patent GB-681082-A (GB)
Title: Improvements in and relating to door latches
IPC: E05B65/00
Filed: 1951-07-17
Abstract: 681,082. Door latches. BRITISH THOMSONHOUSTON, CO., Ltd. July 17, 1951 [Aug. 2, 1950], No. 16939/51. Class 44 A fastening for the door of a refrigerator cabinet comprises a latch element 19 pivotally mounted on the door and a keeper 7 pivotally mounted on the cabinet, springs 29, 12 urging the latch and keeper to the engaging position for holding the door in the closed position, a push-button 32 on the outside of the door for moving the latch 19 to the releasing position and a foot pedal connected by a link 41 to the keeper for moving it to the releasing position. The latch 19 is pivoted at 20 to a bracket 17 and normally maintained in the fastening position by toggle links 24, 25 held by the spring 29 in a straight line. The press-button 32 is mounted in a bore in the handle 5 and spring loaded to the outer position. Pressure on the press-button breaks the toggle and lifts the latch to the dotted-line position where a roller thereon is free from the keeper 7. The keeper is pivoted at 9 and urged to the retaining position by the spring 12 which yields as the door closes. The foot pedal is pivoted between its ends, one end projecting at the bottom of the cabinet and the other being connected by the link 41 to the keeper. Downward foot pressure on the outer end causes the link to lift, thus displacing the keeper to free the latch 9. A spring-loaded plunger engages an edge of the door so that the door opens automatically when the foot pedal is operated.
Patent GB-1432614-A (GB)
Title: Seats for tractors and other vehicles
IPC: B60N2/90
Filed: 1973-04-09
Abstract: 1432614 Vehicle seats L A G ALDEN [trading as PARALLELLSYSTEM] 9 April 1973 [12 April 1972] 16954/73 Headings A4J and A4U A seat is mounted on a tractor or other crosscountry vehicle for movement in a curved path with the centre of curvature of the path disposed in the plane in which the vehicle wheels engage the ground, the seat being biased towards the normal position in the vehicle by springs 13 interposed between the seat and the vehicle. The seat which may be adjustable in height by a lazy-tongs arrangement 12 may be supported on the vehicle by three pivoted links (9), Fig. 5 (not shown) 10, 11 disposed one at the front and two at the rear of the seat. Alternatively, the seat may be movably supported on a spherical member 4 or on two pairs of curved rails at right angles to each other. The springs which may comprise four rubber bands disposed at right angles to each other may be of adjustable tension to compensate for persons of different weights. The seat may be held in position relative to the vehicle by an electric hydraulic or mechanical brake 19.
Patent GB-1077349-A (GB)
Title: Copolymerization of alpha olefins
IPC: C08F210/00
Filed: 1966-04-18
Abstract: Gel-free rubbery copolymers of at least two alpha-olefins containing 2-12 carbon atoms, a vinylidene aromatic hydrocarbon, and optionally a small amount of a diene, are made by contacting a mixture of the alpha-olefin monomers with a catalyst comprising an organoaluminium compound and a compound of a transition metal of Group VB of the Periodic Table, in the presence of less than 50% by weight of the alpha-olefins, of the vinylidene aromatic hydrocarbon.  The Periodic Table referred to is that shown in "Handbook of Chemistry and Physics," thirty-ninth Edition. The preferred transition metal is vanadium. The alpha-olefin may be ethylene, propylene, butene-1, or 3-methyl pentene-1.  The aromatic compound may be styrene, alpha-methyl styrene, allyl benzene, vinyl toluene, vinyl naphthalene, or 1-vinyl-4-ethyl benzene.  The diene may be an aliphatic, cycloaliphatic, or aromatic hydrocarbon in which the double bonds are either conjugated or non-conjugated. The copolymerization is preferably effected in a non-reactive organic liquid diluent and the catalyst may be preformed or formed "in situ." Exemplified copolymers are ethylene, propylene, and allyl benzene; ethylene, propylene, and dicyclopentadiene; ethylene, propylene, and styrene; ethylene, propylene, diayclopentadiene, and styrene; ethylene, propylene, and butadiene; and ethylene, propylene, and cyclooctadiene-1,5. The copolymers can be sulphur vulcanized or vulcanized with peroxy compounds.
Patent GB-488394-A (GB)
Title: Improved process for the production of sheet formations of a leather-like character from fibres and polymerisation products of unsaturated organic compounds
IPC: D04H1/74
Filed: 1937-06-18
Abstract: 488,394. Agglutinated fibrous materials. FREUDENBERG, W., FREUDENBERG, H., FREUDENBERG, O., and FREUDENBERG, R. June 18, 1937, No. 17057. Convention date, June 20, 1936. [Class 140] Leather-like sheets are made by impregnating fleeces of loose (i.e. unwoven and non-felted) fibres such as are obtained by carding preferably long-fibred material with thermoplastic polymerization products, e.g. polyvinyl or polyacrylic acid compounds, their homologues or derivatives, or mixtures, or mixed polymerization products, hot-pressing, e.g. by calendering, and if desired, coating with lacquer, e.g. nitro-cellulose lacquer. The fibres may be skin or leather fibres, wool, cotton, wood, asbestos or artificial silk or mixtures. The binder may be in the form of powder or threads, solutions or aqueous emulsions or suspensions, and may contain wetting agents, pigments and softeners. The fleece may be pre-treated with wetting agents or pigments or with thin emulsions or froths of the polymerization products, followed by drying and hot-pressing to impart sufficient strength for the subsequent treatment. The product may be curried, dressed and grained in the manner of leather.
Patent GB-273333-A (GB)
Title: Improvements in and relating to cooling systems for dynamo electric machines
IPC: H02K9/10
Filed: 1927-06-27
Abstract: 273,333. Akt.-Ges. Brown, Boveri, et Cie. June 28, 1926, [Convention date]. Dynamos, cooling. - In a dynamo-electric machine having a closed circulating cooling air system with the coolers disposed below the machine between the supporting columns, the coolers 1 are inclined at an upwardly opening angle of about 60‹ to the vertical so that their upper headers are accessible from the outside for cleaning purposes. The lower headers 5 open into a chamber 6 which is not in the air circulating system, and waste water and foreign matter are conveyed from the chamber 6 by a pipe 7. The direction of the air from the machine outlet 8 to the inlets is shown by the arrows. Instead of being arranged in V-form, the coolers may be disposed all at one side. Slideways 13 are provided in the air passages 10 so that the coolers can be introduced vertically through the floor openings 12 as shown by the dot-and-dash lines. Hooks 16 secure the coolers in position. Arrangements may be provided to utilize fresh cooling air in the event of failure of the cooler.
Patent GB-439683-A (GB)
Title: Improvements in or relating to packing and shipping boxes or like receptacles
IPC: B65D5/50
Filed: 1934-06-08
Abstract: 439,683. Boxes. BREHMER FOLDING BOX CO., Ltd., and WASSNER, F. A. B., Vencourt Place, King Street, Hammersmith, London. June 8, 1934, No. 17097. [Class 18] A box or case for use in shipping fragile articles such as wireless sets is erected from one or more blanks that constitute the walls thereof and that, before being erected, have buffers attached thereto. The buffers in the erected case provide resilient support at opposite sides of the contents. The box may be made from two end blanks 30 having buffers 32, 33 attached thereto, and a blank 18 which constitutes the bottom, two side walls and a lid 19, and has buffers 27, 28 provided along the two longer edges of the blank. Alternatively the box may comprise two blanks of the form shown in Fig. 6. The sections 44, 45 form side walls and the flaps 47, 54, 50, 55 form overlapping lid and base flaps. The blanks are joined at diagonally disposed vertical corners by flaps 46.