baber/WOPTO huggingface dataset:
Patent GB-1135478-A (GB)
Title: Phosphorus containing starch-based polyethers
IPC: C08B31/00
Filed: 1966-04-21
Abstract: 1,135,478. Starch-phosphorus based polyethers; polyurethane foams. OLIN MATHIESON CHEMICAL CORP. 21 April, 1966 [21 May, 1965], No. 17530/66. Headings C3C, C3R and C3U. A starch-phosphorus based polyether is made by mixing starch with a phosphoric acid containing 80-120% of H 3 PO 4  in a proportion equivalent to 1-10 moles of P 2 O 5  per glucose unit in the starch at 30-120‹ C., in the presence of sufficient water to hydrolyse the starch, reacting the resulting mixture with 1-2 moles of an alkylene oxide per mole of OH in said mixture, and recovering the product. Ethylene and propylene oxides, or a mixture thereof, are exemplified; others are listed. The starch, which may be potato, corn, wheat, chlorinated, rice or tapioca starch, may be oxyalkylated in two stages, and between alkylene oxide additions an acid catalyst may be added; a list of suitable catalysts is given. In another embodiment a polyhydric alcohol, e.g. glycerol, ethylene glycol, propylene glycol or sorbitol, may be added to the starch-acid mixture before alkoxylation. Polyurethanes are prepared by reaction of the above starch-phosphorus polyethers by reaction with polyisocyanates, using at least 0À7 NCO groups per OH group present, using either "oneshot" or "prepolymer" techniques. Conventional catalysts, additives and blowing agents are used. The starting polyether may have a hydroxyl number of 30-800, depending upon the rigidity required in the final polyurethane. In examples the polyether derived from starch, phosphoric acid, propylene oxide and optionally, glycerol, is reacted with polymethylene-polyphenyl isocyanate.
Patent GB-558453-A (GB)
Title: Improved construction of guide passages for ammunition belts for machine guns
IPC: F41A9/54
Filed: 1939-06-16
Abstract: 558,453. Machine gun belt guides. BOULTON PAUL AIRCRAFT, Ltd., NORTH, J. D., and HUGHES, H. A. June 16, 1939, No. 17597. [Class 92 (ii)] An ammunition belt guide channel 1 is provided with two or more multiple rows of rollers 6 to support the cartridges 4, the rollers of each multiple row overlapping each other in the direction of movement of the belt as shown in Fig. 2.
Patent GB-680539-A (GB)
Title: Improvements in countersinking tools and the like
IPC: B23B51/10
Filed: 1949-07-04
Abstract: 680,539. Drills. WITTON-JAMES, Ltd., and SWINDLEHURST, A. July 4, 1950 [July 4, 1949], No. 17619/49. Class 83 (iii). A countersinking drill comprises a forward portion having oppositely disposed chip-clearing grooves, the junction edge between one groove and the forward portion providing a cutting edge, while the junction edge between the other groove and the forward portion provides an edge bounding a cone surface section concentric with the axis of the tool. The tool may comprise a tapered shank 12, Fig. 2, with a cutting head 13 having a conical point 14. Longitudinal flutes 15 are provided at 180 degrees and tangential to the point thus forming two edges a, c in the coned surface 14. The edge c is backed off to produce an effective cutting edge, but the edge a has only a guiding function. There may be only one flute or more than two. In a modification, the flutes may be of spiral form giving a tool similar in appearance to a twist drill, but having only one edge intended for cutting. The tool may have a straight shank.
Patent GB-1137876-A (GB)
Title: High voltage d.c. transmission systems with protection means
IPC: H02H3/247
Filed: 1966-04-22
Abstract: 1,137,876. Transistor switching circuits. ALLMNNA SVENSKA ELEKTRISKA AB. 22 April, 1966 [23 April, 1965], No. 17653/66. Heading H3T. [Also in Division H2] A high voltage D.C. transmission system is protected against fault on the D.C. line by blocking the rectifier station. An input signal at 16 from a voltage divider across the transmission line normally keeps transistor 25 conducting. When the line voltage falls below a predetermined value the transmitter 25 ceases to conduct and the unijunction transistor oscillator 4 produces pulses which are amplified by the blocking oscillator 7 and used to fire thyristor 10. The thyristor 10 is in a circuit which blocks the rectifier station. Resistor 103 is so large that the thyristor ceases to conduct at the end of the firing pulse. The blocking oscillator output drives transistor 8 and the circuit 9 which after a time delay simulates the effect of correct operation of the transmission line by making transistor 25 conduct. The rectifier station is then unblocked. If the transmission line is still faulty the process is repeated. After several unsuccessful attempts to restart the capacitor 11 becomes charged and the unijunction transistor oscillator 12 fires thyristor 13. This causes additional current to flow in thyristor 10 which then remains conducting. The transmission system then remains blocked. In the event of a sudden severe fault means 5, 6 responsive to the timederivative of the line voltage trigger the blocking oscillator 7 to provide immediate permanent blocking of the rectifier station. Where two parallel transmission lines are in use a small delay is introduced by moving switch 201 to its lower position to bring into circuit the components 17, 19, 20. This ensures that a transient fault on one line does not cause the rectifier supplying the other line to be blocked. .
Patent GB-283077-A (GB)
Title: Improvements in coin-freed printing and like apparatus
IPC: G07F17/26
Filed: 1927-07-02
Abstract: 283,077. Hõnel, C. July 2, 1927. Franking-machines.-In a coin-freed receipting-apparatus which is used as a savings-bank, and in which a book or card is printed as a receipt for the inserted coin, the printing or stamping cylinder is arranged to allow the free insertion and adjustment in position of the book or card, which is ejected from the machine by the cylinder while this is performing its printing operation. The machine comprises a printing cylinder 3 having a raised printing surface 7 which co-operates with an impression cylinder 8 and an inking cylinder 12, these cylinders being mounted between upright plates 1, 2. The book or card, freely inserted through a front slot, rests on a table 10 and! is positioned by an adjustable front index and by the ends of slits 11, 11<1> in the plates 1 2. During the printing operation, ribbed surfaces at the sides of the surface 7 engage the book or card and eject it from the machine. The cylinder 3 is driven through wheels 4, 5 from a shaft 6, is rotated by a crank handle at the front of the machine through a shaft 25 and bevel gears 26, 27, Fig. 4. The handle may be at the side on a shaft 28, Fig. 3, driving through gears 27<1>, 28<1>. In either case the gears operate a ratchet wheel 17 in engagment with a pawl mounted on a disc 16 secured to the shaft 6.
Patent GB-334888-A (GB)
Title: Improvements in producer gas generators
IPC: C10J3/00
Filed: 1929-06-10
Abstract: 334,888. Hodgson, A. E., Jones, N. C., and Motor Owners' Petrol Combine, Ltd. June 10, 1929. Producers.-In a suction gas producer for use on automobiles or marine craft, the air is supplied or the gases removed through slots in an ash pan, at the base of the producer which may be operated on the up- or down-draught, or combined up- and down-draught systems. A fuel hopper 2 is mounted on a drum 1 which has a lining 6 of non-corrosive heat resisting steel, insulated by a partition 7 from the outer wall. A door 11 at the base encloses a removable, ashpan 12 having vertical walls 16 with slots 19, and passages 10 lead to an annular chamber 9 provided with a conduit 28 connected to a valved outlet 30 for use during the down-draught, and to a fan 33 with an air inlet controlled by a slide valve 34. An upper air inlet pipe 40 leads into a depending extension 38 of the hopper 2. Water is supplied from a tank 24 and drip feed 25 to a channel 22 and to the chamber 9, and a conduit 26 takes off the gases during an up-draught from the channel 22 which is perforated on its inner side. During the up- and down-draught air is supplied through inlets 28 and 40, and the gas withdrawn through outlet 26. Specification 219,058 is referred to.
Patent GB-256207-A (GB)
Title: Improvements relating to atomisers
IPC: B05B11/06
Filed: 1926-07-16
Abstract: 256,207. Vendome, R. July 31, 1925, [Convention date]. Air-pressure sprayers. -The head 1 of an atomizer attached to a container for the liquid to be sprayed is provided with an opening 2 for the intake of compressed air from a bulb, and is formed at its upper end with a chamber 4 having an aperture 5 in its peripheral wall. A tube 6 immersed in the liquid is mounted to extend an adjustable distance into the chamber. Liquid raised by the air pressure is mixed with air and atomized in the chamber 4 and is discharged at the crifice 5.
Patent GB-722605-A (GB)
Title: A variable speed friction drive
IPC: F16H15/40
Filed: 1951-07-27
Abstract: 722,605. Continuously-variable friction gearing. COOK, J. L. July 28, 1952 [July 27, 1951], No. 17800/51. Class 80 (2) A continuously-variable ratio friction gear comprises a driving cone 1 and a driven cone 2 connected by two balls 7 which are movable longitudinally of the cones by means of a rod 12. The balls are mounted on axles 8 and are urged by springs 9 into contact with the rollers. A cage 6 carrying the balls is mounted on rollers 10 running in grooves 11 in the casing. A portion 5 of the roller 2 is loosely mounted on the output shaft 4 to provide a neutral position. Fans 13 supply cooling air to the friction elements.
Patent GB-544118-A (GB)
Title: Improvements relating to magnet structures
IPC: H01F7/02
Filed: 1940-12-18
Abstract: 544,118. Permanent magnets. BRITISH THOMSON-HOUSTON CO., Ltd. Dec. 18, 1940, No. 17813. Convention date, Dec. 19, 1939. [Class 35] A lifting and holding magnel consists of two similar permanent magnets of U-form of iron, nickel and aluminium alloy prepared in accordance with Specification 423,897, [Group II], which may be provided with pole-pieces 12, 13 of high-permeability, high saturation alloy, for example an alloy of cobalt iron soldered to the magnet by the process described in Specification 496,103, [Group XXII]. The two magnets are according to the invention superimposed on one another in a non-central position as shown so that there are three " air gaps 15, 16, 17 and a concentration of flux through the gap 16 where unlike poles are in contact with one another. For the best results the area of contact at 16 should be equal to the sum of the areas at 15 and 17.
Patent GB-536570-A (GB)
Title: Improvements relating to hydraulic brakes
IPC: B60T11/30
Filed: 1940-06-05
Abstract: 536,570. Hydraulic brakes. ROVER CO., Ltd., and IVERSEN, P. A. SCOTT-. June 5, 1940, No. 17820/39. [Class 103 (i)] Valves provided on the brake cylinders a of hydraulic brake systems for permitting the escape of air comprise a rubber tube c fitted into a passage which com. municates at one side with the cylinder bore and which is nor. mally closed by a screw-plug d, The liquid supply connection is at f.
Patent GB-165746-A (GB)
Title: Speed control mechanism for motor vehicles or other applications
IPC: B60K20/00
Filed: 1921-06-30
Abstract: 165,746. Etablissements Industriels J. Bignan. July 2, 1920, [Convention date]. Void [Published under Sect. 91 of the Act]. Controlling variable-speed gearing. -The control lever is adapted to be rocked in two planes at right, angles, in one plane about an axis passing through its end, and in other about a ball-andsocket joint between its ends. The level g is pivoted to the control shaft a which has a finger j i working in a gate c in the form of a concave grating. A casing f is mounted on bearings b, d and is fitted with a ball- and-socket joint k for the control lever. To prevent accidental movement of the lever into the reverse position a sliding sleeve or bolt m is provided which normally engages a fixed stop l. When the lever is to be moved to its reverse position the bolt is depressed by means of a rod o against the action of a spring n.
Patent GB-1465357-A (GB)
Title: A vehicle
IPC: A01D90/08
Filed: 1974-04-24
Abstract: 1465357 Loading unloading and transporting bales and articles MASCHINENFABRIK FAHR AG GOTTMADINGEN 24 April 1974 [12 May 1973] 17840/74 Heading B8 A vehicle for loading and unloading bales or other articles comprises a pick-up device 4 and conveyer 5 which feeds the bales 18 on to a track 17 along which they are conveyed by conveyer chains 6 having carrier elements 7, which pass over sprockets 9-13 to form a closed chain loop. The chain is driven through an advance gear 16 either continuously or intermittently under the control of a lever 26. The track 17 is divided into two loading lines by boards 23 while guide plates 24 move the bales from one line to the other as they descend the duct 22. In use a picked up bale enters a space between elements 7 which are about at the height of the centre of gravity of the bale above the track 17, when fed by the conveyer 5 and in so doing trips the lever 26 to cause advance of the chain one space between elements 7. The bales advance along the tracks 17 as they are collected stepwise in the path shown until both lanes are full. Unloading is effected over the pulley 13, where the track 17 rises into a chute 25 or on to a conveyer at the front of the vehicle.
Patent GB-499356-A (GB)
Title: Improvements in and relating to matchboxes
IPC: A24F27/16
Filed: 1938-06-16
Abstract: 499,356. Match boxes. RASMUSSEN, A. June 16, 1938, No. 17981. Convention date, June 18, 1937. [Class 18] A match box of the kind consisting of a solid non-resilient casing 3 having a slot 5, 6 through which matches may be withdrawn against the retaining force of a leaf spring, is provided with dovetail &c. slots in the walls in which wings on one or more leaf springs 7, arranged at the edge or within the contour engage to hold the springs in position. A cover 2 secured by its own resiliency e.g. in known manner by a pair of projecting tongues, may abut the ends of the springs. A striking surface 1 may be provided.
Patent GB-570817-A (GB)
Title: Improvements relating to reversible ratchet mechanisms
IPC: F16D41/16
Filed: 1943-11-01
Abstract: 570,817. Ratchet gearing. BRITISH THOMSON-HOUSTON CO., Ltd., and CASTELLAIN, A. P. Nov. 1, 1943, No. 18000. [Class 80 (iii)] [Also in Group XXXV] Consists in electromagnetically-actuated reversible ratchet mechanism for working at high speed. A pair of flexible strips 1, 2 fixed at one end to a frame 3 have their free ends reversely bent to form a double-ended pawl 4, 5. The pair of strips may be replaced by a single strip. To the strips is secured a coil 6 located in the air gap between the poles of an electromagnet 7 having an energizing coil 8. A supply of A.C. to the coil 8 causes the coil 6 to oscillate. The fingers 4, 5 are adapted to engage teeth on ratchet wheels 10, 9 respectively. These are mounted on a shaft 11 journalled in side plates 12 and connected through gearing 13, 14 to the driven shaft 15. With the blades 1, 2 oscillating about their mean position, the ratchet teeth are not engaged. To effect rotation, a D.C. component is supplied to the coil 8 and this displaces the mean position about which the strips reciprocate and causes one or other of the pawls to be effective, depending on the polarity of the current. The coil energized by the A.C. is also supplied with D.C., the value and sense of which are controllable. The coil may be centre-tapped and the- A.C. supplied between the centre-tap and the outer ends of the coil, a thermionic valve being included in each connection to the outer ends, a common source of D.C. being provided for the two valves. Thus, by rendering by grid control either both conducting or only one conducting the effective D.C. component may be made zero or of either sense respectively, without affecting the A.C. component. By rendering both valves non- conducting, the A.C. component can be suppressed, but in this case reciprocation of the pawl ceases, but it is preferred to keep the pawl oscillating. If desired, the D.C. may be supplied to a separate winding on the magnetic circuit of the electromagnet. Specification 24550/12, [Class 80 (iii)], is referred to.
Patent GB-787435-A (GB)
Title: An angularly flexible axial coupling between the neck of a roll and the boss
IPC: F16B3/00
Filed: 1956-06-12
Abstract: 787,435. Shaft couplings. SCHLOEMANN, AKT.-GES. -June 12, 1956 [June 22, 1955], No. 18084/56. Class 80 (2). A shaft coupling permitting relative rotary motion between the neck 1 of a roll and the drive shaft bars 2 comprises two semicylindrical shells 4, 5 enclosing an elastic synthetic plastic core 6, gaps 17, 18 between the shells permitting them to be forced more or less closely together. The core 6 is secured to the shells 4, 5 by balls 15 on shanks 14 screwed into the shells, and the assembly is prevented from rotation in the semicircular key-ways in the neck and bars by sleeves 7, 10, 11 secured by screws 8, 10 to the bars and a cover ring 9. The plane determined by the gaps 17, 18 is normal to the line of action of the load, and the plastic core is prevented from entering the gaps by V-formations 16 along its length.
Patent GB-1037667-A (GB)
Title: Improvements in or relating to electromagnetic waveguides
IPC: H01P1/162
Filed: 1963-05-08
Abstract: 1,037,667. Waveguide harmonic filters. LITTON INDUSTRIES Inc. May 8, 1963 [May 14, 1962], No. 18112/63. Heading H1W. A microwave harmonic filter comprises a main waveguide 12<SP>1</SP> and a number of auxiliary waveguides, e.g. 34, loaded with solid dielectric material, e.g. quartz. The auxiliary waveguides are dimensioned below cut-off for the fundamental wave and are designed to transmit energy at harmonic frequencies. This energy may be absorbed in lossy material 28<SP>1</SP> distributed within auxiliary waveguides 18<SP>1</SP>, 20<SP>1</SP>, 22<SP>1</SP>, 24<SP>1</SP>. The solid dielectric material may protrude into the main and auxiliary waveguides. On the narrow sides of the main waveguide, the auxiliary guides are arranged in a row alternately above and below the centre line. On the broad sides, they are arranged in alternating transverse rows of two and three. The auxiliary guides may be in the form of conductive tubes or may consist of holes in blocks 44.
Patent GB-968298-A (GB)
Title: Improvements in the sealing of ends of tubes
Inventor: THOMAS CYRIL
IPC: B23P11/00
Filed: 1962-05-11
Abstract: 968,298. End capping rods and tubes. J. A. CRABTREE & CO. Ltd. April 19, 1963 [May 11, 1962], No. 18142/62. Heading B3V. [Also in Division B8] A method for sealing the open ends of flared tubes comprises the introduction of the open flared end of a tube 1 into a groove in the face of a metal cap 2 and forcing the cap circumferentially around the tube end. The tubes, employed in circuit breakers, have liquid and a spring-pressed core 3 or plunger inserted therein at stations past which the tubes are indexed by a conveyer chain. At a fourth station the core is influenced magnetically against a spring 4 in order that the cap may be placed on the tube. The tube is then placed in a split holder 10 having a die 12, and descent of a plunger 13 causes the cap wall to be forced around the flared open end of the tube. Specification 905,639 is referred to.
Patent GB-1503542-A (GB)
Title: Polyethylene foam/polyurethane composites
IPC: C08J9/34
Filed: 1975-05-01
Abstract: 1503542 Polyethylene foam/polyurethane composites BAYER AG 1 May 1975 [24 July 1974 6 May 1974] 18196/75 Heading B2E A composite material comprises a layer of cross-linked polyethylene foam joined in the absence of an adhesion promotor to a layer of unfoamed polyurethane. Several alternate layers of each material may be present. The polyethylene foam is preferably crosslinked by electron beam, Co90 rays, or by peroxides. An exhaustive list of suitable polyurethanes is given. The polyurethane may be applied as a dispersion, solution, suspension or powder and heated, or by applying a mixture of isocyanate/reactive hydrogen precursors e.g. as a melt and allowing them to harden. Powder coatings may be calendered after being heated. In Examples: (1 to 3) polyurethane powders are applied to the surface of polyethylene foams which have a closed-cell surface or open-cell surface formed by slicing off the closed-cell surface; (4, 6) a reaction mixture is sprayed onto polyethylene foam surfaces; and (5) a hot reaction mixture is poured onto polyethylene foam.
Patent GB-256039-A (GB)
Title: An improved brake mechanism
IPC: B60T13/66
Filed: 1925-07-16
Abstract: 256,039. Marks, E. C. R., (Compagnie Internationale des Freins Automatiques Soc. Anon.). July 16, 1925. Fluid-pressure.- Brake mechanism, more particularly for trailer vehicles, comprises a reservoir 1 containing a compressed fluid which, when a closing member 2 is opened, acts upon a liquid to displace a piston 4 in a cylinder 3 and so apply the brake, and the piston is returned to its initial position by a device operated by hand which exhausts the liquid from the cylinder or mechanical means returns the piston. The liquid exhausted from the cylinder 3 may be returned to the reservoir 1 by a hand pump 12. The closing member 2 is opened by a core 8 of a solenoid. The solenoid has a current normally traversing it and restrains the core against a spring 10. The wire transmitting the current may be connected between the power-driven vehicle and the trailer and is broken on the coupling braking. The piston may be forced back by gearing meshing with a rack on the piston rod. The reservoir may be connected to the brake cylinder through two ducts each controlled by a cock or automatic valve operated by cords, one connected to the vehicle in front and the other to that behind. In Fig. 3, the brakes are applied to the four wheels of a vehicle by separating one of the members 5 from the adjacent member 6 by means of the links 23 and lever 22 connected to the brake piston 4. The brakes are released by acting on the other lever 22 by the cable 24a. The members 5 are connected by connecting rods 5b and members 5a embracing the members 6. The members 6 are supported by arms 6<a> fulcrumed on the vehicle.
Patent GB-1512291-A (GB)
Title: Composite alloys
IPC: C22C38/00
Filed: 1975-05-01
Abstract: 1512291 Composite material: sintered boride tools CATERPILLAR TRACTOR CO 1 May 1975  [2 May 1974] 18268/75 Headings C7A and C7D A high wear-resistance composite alloy consists of cast spheroidal particles of an alloy of Cr, Fe and B embedded in a matrix of a second alloy e.g. a Ni-base brazing alloy.
Patent GB-1503706-A (GB)
Title: Durable alloys
IPC: C22C30/00
Filed: 1975-05-01
Abstract: 1503706 Hard alloy particles CATERPILLAR TRACTOR CO 1 May 1975 [2 May 1974] 18269/75 Heading C7A Hard cast, spheroidal particles of alloys containing either Cr 25-61 B 6-12 Fe bal plus impurities or Cr 61-70 B 6-12 C 0À05-2À0 Fe bal plus impurities are made by pouring the molten alloy on to a hard surface to produce droplets and rapidly quenching the droplets to produce solid cast spheroidal particles. These may be plated with Ni, Cr or Cu by normal electro-plating techniques and either cast or shaped with a homogenous block or mixed at ambient temperature with a particulate ductile matrix material and sintered to give an abrasion and wear resistant composite alloy.
Patent GB-312518-A (GB)
Title: Improvements in or relating to photographic apparatus
IPC: G03B17/53
Filed: 1928-06-23
Abstract: 312,518. Stewart, A. June 23, 1928. Drawings to Specification. Automatic and coin-freed apparatus. - In apparatus wherein a number of exposures of a sitter may be made in succession on a light-sensitive strip, means are provided for rendering attractively visible in succession a number of positions which are spaced apart in the sitter's field of view, so as to ensure that the sitter will change his pose between successive exposures. The means described are the same as those described in Specification 312,516. Means are also provided for payment to be made in advance by the sitter, and for enabling such payment to attract the attention of the operator. These means are also the same as those described for this purpose in Specification 312,516.