baber/WOPTO huggingface dataset:
Patent GB-1093961-A (GB)
Title: Improvements relating to stereophonic transmission systems and receivers therefor
Inventor: PERCIVAL WILLIAM SPENCER
IPC: H04H20/88
Filed: 1964-01-29
Abstract: 1,093,961. Stereophonic transmission systems. ELECTRIC & MUSICAL INDUSTRIES Ltd. Jan. 29, 1965 [Jan. 29, 1964], No. 3730/64. Addition to 1,012,160. Heading H4R. The stereophonic transmission system of the parent Specification is modified by subjecting the frequency components above 1 kc/s. of the difference signal to amplitude compression before transmission. The compressor and corresponding expander are of the type described in Specification 1,044,003.
Patent GB-321370-A (GB)
Title: Improvements in log barking machines
IPC: B27L1/02
Filed: 1929-02-04
Abstract: 321,370. Thorne, C. B. Feb. 4, 1929. Bark, removing.-Relates to a log barker in which the logs are treated in a container, pocket or on a platform and are kept moving by actuating members which lift them up and move them forward. The bark is removed through the logs being rubbed together during transit. The logs are fed down the incline way 23 to the container, the bottom of which is slotted to allow rotating and reciprocating bar grates 10, 11, 12 to project inwards. The bar grates which are provided with lugs 17, are attached to cranks of the crank shafts 13 journalled beneath the container. The logs are kept within the limits of the walls 24 and lifted over the rear wall 22 to the discharge incline 25. In modifications the bar grates are replaced by oscillating plates or pistons projecting from cylinders at regular intervals.
Patent GB-345413-A (GB)
Title: Improvements relating to control systems for elevator cars, lifts, hoists and like vehicles
IPC: B66B1/44
Filed: 1930-02-04
Abstract: 345,413. Lifts. ASSOCIATED ELECTRICAL INDUSTRIES, Ltd., Bush House, Aldwych, London.-(Assignees of Dunlop, J. ; 513, S. Prospect Avenue, Park Ridge, Illinois, U.S.A.) Feb. 4, 1930, No. 3766. Convention date, Feb. 4, 1929. [Class 78 (ii).] In a lift system provided with main braking mechanism capable of bringing the cage accurately to rest at a landing if it passes a predetermined point in advance of the landing at a predetermined speed, auxiliary braking mechanism is provided which applies retarding forces for reducing the speed of the cage so that it arrives at the predetermined point with the desired predetermined speed, these retarding forces being selected upon the arrival of the cage at a predetermined greater distance in advance of the landing than the predetermined point in accordance with the speed of the cage then prevailing. The electromagnet controlling the main brake B is connected in series with the coils of the up-direction and down-direction switches 1, 2 and is de-energized when these switches are de-energized to cut off power from the hoisting motor EM. The auxiliary brake 12 is mounted on a lever 13 which is actuated bv either of the electromagnets 14, 15, 16 connected to corresponding contact members 17, 18, 19 arranged for selective engagement by a switch arm 20 in accordance with the speed of the cage. The arm 20 is actuated by a centrifugal governor 21 driven by the shaft 7 of the hoisting drum D. If the cage is running below normal speed, the arm will be moved to the contact 19, and the electromagnet 14 will be energized to apply a subnormal braking effect. Similarly abnormal and normal braking effects will be applied by the electromagnets 16, 15, respectively, when the contacts 17, 18 are engaged. As the circuit for the electromagnets 14, 15, 16 passes through the normally closed contact members c on the low speed relay LR, the auxiliary brake can be applied only when the relay LR has been de-energized to bring the cage to a stop. The switches 1, 2 are controlled by a switch CS on the cage, and the control system employed for automatically stopping the cage at the landings is preferably of the automatic inductor landing type.
Patent GB-1200271-A (GB)
Title: Device for feeding an igniting agent for combustion chambers of liquid fuel rocket propulsion units
IPC: F02K9/95
Filed: 1968-01-24
Abstract: 1,200,271. 200, 271. Rocket engines - ignition arrangements. BÍLKOWG. m.b.H. Jan.24, 1968 [Feb.23, 1967], No.3796/68. Headings. F1J and F1L. The invention relates to a method of supplying an ignition agent into the combustion chamber of a liquid propellant rocket, the ignition agent reacting hyper golically with one of the liquid propellants. The invention also provides for the continuous flow of a purging agent through the ignition agent conduits during operation of the combustion chamber. A piston and cylinder assembly 1 is provided, the cylinder 2 being divided by the piston 3 into an ignition agent storage compartment 5 and a pressurizing compartment 4, the pressurizing fluid being the propellant fuel which is supplied under pressure from the tank 11 through line 10. An outlet 13 is provided through the end wall 12 of the ignition agent compartment 5, the outlet being controlled by a solenoid-operated twoway valve member 17. The valve member 17 is normally urged to the right by means of a spring 27 thus closing off the ignition agent outlet 13. In this position of the valve member a flow path is provided from the fuel tank 11 through line 25a, duct 29 in the closure member 26, chamber 28 and radial bores 30 to the annular space 31 thence through outlet 38 and line 25b to the inlet duct 32 in the head 33 of the combustion chamber 34. This circuit constitutes a purging circuit through which a small proportion of fuel flows when the combustion chamber is in normal operation. To start the operation, the switch 41 is closed thus energizing the solenoid 19 and causing the valve member 17 to move to the left to the position shown against the action of the spring 27 and thus opening the outlet 13. A quantity of ignition agent is forced from the compartment 5 by the pressure of fuel acting on the piston 3, the ignition agent flowing through line 25b and inlet 32 into the combustion chamber 34 where it reacts spontaneously with the other propellant, oxygen, already supplied to the chamber. Upon ignition, the electric circuit is broken and the valve member 17 moves to the right to close the outlet 13 of the ignition agent, at the same time opening the circuit 25 of the purging fluid so that a small portion of fuel flows continuously through the circuit 25 and into the inlet 32 into the combustion chamber, thus preventing the ignition agent circuit from becoming blocked. The main flow of fuel is through the line 10 to the combustion chamber head 33. The ignition agent may be aluminium triethyl which reacts spontaneously with oxygen.
Patent GB-1236905-A (GB)
Title: Improvements in or relating to the manufacture of glass
IPC: C03C1/02
Filed: 1969-01-23
Abstract: 1,236,905. Glass batch. COMPAGNIE DE SAINT-GOBAIN. 23 Jan., 1969 [23 Jan., 1968], No. 3937/69. Heading C1M. A batch for making siliceous glass, and contaming compounds that give an oxide of an alkali metal and of an alkaline earth metal, wherein the compound providing the alkali metal oxide is at least partially present as the alkali metal hydroxide, and the compound providing the alkaline earth metal oxide is present at least partially as the alkaline earth metal oxide. The alkaline earth metal oxide may be baked dolomite or quicklime. The alkali metal hydroxide may be NaOH. present either anhydrous or as an aqueous solution. The batch is preferably granulated. Preferably in making the batch aqueous NaOH (60-75% by weight concentration) is added in the molten state to the other raw materials, the batch thus prepared being maintained at not above 75‹ C. until it is introduced into the melting furnace. Considerable improvement in melting speed is said to result from the use of the batches described. Two examples of glass compositions which may be obtained are given.
Patent GB-828131-A (GB)
Title: A method of and apparatus for resistance welding
IPC: B23K11/24
Filed: 1958-02-06
Abstract: 828,131. Control systems for resistance welding. BUDD CO. Feb. 6, 1958 [Feb. 6, 1957], No. 3982/58. Class 38 (4). A method of controlling a resistance welding operation comprises supplying the workpieces to be welded with energy at a uniform rate until fusion of the workpieces commences and thereafter automatically adjusting the energy input to the workpieces in such a manner that the resistance across the workpieces varies in accordance with a predetermined function. The resistance across the workpieces is assessed by developing two signals W e  and W i  which are derived by measuring respectively the voltage across the workpieces and the current flowing therethrough, these signals being used to control the energy input to the welder. Before fusion of the workpieces takes place the resistance across the workpieces does not change appreciably; in consequence the energy input to the workpieces remains substantially uniform. Immediately fusion occurs a radical change takes place in the resistance across the workpieces whereby the derived signals W e  and W i  change. A signal W r  is derived in a resistance signal generator from the signals We, W i  and from this signal W r  is derived a further signal F r  by means of a function signal generator. The signal F r  is representative of the function which the resistance across the workpieces is required to follow after fusion has taken place. The signal F r  and the signal W r  are compared in a change signal generator, therefore when the signals W e  and W i  and hence the signal W r  change after fusion has taken place, the comparison of signals F r  and W r  produce a signal C g  which, in an input control device, is compared with a reference quantity REF, thereby to control the energy input to the welder such that the weld is made in the desired manner.
Patent GB-178243-A (GB)
Title: Improvements in devices for retaining a hat on the head of the wearer
IPC: A42B7/00
Filed: 1921-04-12
Abstract: 178,243. Hymas, G. A. April 12, 1921. No Patent granted (Sealing fee not paid). Hats, securing to head.- A hat-retaining device comprises a wire frame A covered with French canvas and silk and secured to the inside of the hat and a plate C pivoted to the frame and pressed against the head by a spring D secured to the plate C and a bridge-piece B extending across the frame A.
Patent GB-538890-A (GB)
Title: Improvements in and relating to door latching arrangements
IPC: E05B65/00
Filed: 1940-03-05
Abstract: 538,890. Door fastenings. COLDAIR, Ltd., WRAY, E. J., and BUDGE, H. E. March 5, 1940, No. 4099. [Class 44] A latch particularly for refrigerator and like doors has means associated with the handle for adjusting the position of the nose of the latch with respect to the striking plate or keeper. Fig. 1 shows latch mechanism concealed between the rear and front panels 2, 3 of a door and comprising a latch, with flat surface 10 and curved surface 13, which engages keeper 11 mounted on the door jamb 12. and is pivoted at 5 between lugs on a channel member 4 secured to the rear face of panel 3. The latch is urged to engaged position by a compression spring 9, and is retracted by a lever 14 bearing against a roller 16 carried by the latch member when pulled anti-clockwise by operation of the handle. Lever 14 is biassed clockwise by a spring 25. Fig. 2 shows the handle 21 pivotally mounted at one end of a base-plate 22 secured to the outer face of panel 3 to swing in a plane perpendicular to the panel, a rear portion 23 of the handle normally lying against the base-plate. Outward movement of the handle is communicated to lever 14 by a link 18 having a spherical enlargement 20 at its inner end bearing against the lever and a nut 24 at its outer end bearing against part 23 of the handle. The nut serves for adjustment of position of latch surface 13 with respect to the striker portion of keeper 11 and is normally concealed by a removable cover 27.
Patent GB-1048371-A (GB)
Title: A securing device
IPC: B60D1/14
Filed: 1963-01-31
Abstract: 1,048,371. Rod joints. H. S. EVANS. Jan. 28, 1964 [Jan. 31, 1963], No. 4106/63. Heading F2G. [Also in Divisions B7, E1 and E2] A fastening more particularly for scaffold tubes end to end, comprises a pin 15 adapted to be passed through apertures in the sides 23, 23<SP>1</SP> of a channel and an aperture in a lug 11 in the part to be fastened and arranged between the parts 23, 23<SP>1</SP> a guide plate 24 locked in position to hold the pin in these apertures being movable to a position where it can be swung to withdraw the pin. In the modification shown in Fig. 1, the fastening controls two pins 15, 18 for connecting two scaffold tubes 10, 12 end to end, having spigot and socket engagement. Each tube has a lug 11 or 13 embraced by the parts 23, 23<SP>1</SP>. The guide plate 24 is also a channel and engages, by slots 31, 32, pins 29, 30 on the ends of the pins 15, 18 and by a V-shaped slot 34 a pin 33 in the head 25 of a bolt 26 fixed to the channel 23, 23<SP>1</SP> and the channel 24 bears against the channel 23, 23<SP>1</SP> in the locked position. To separate the scaffold tubes the channel 24 is slid upwards on the channel 23, 23<SP>1</SP> and the pins 29, 30, 33 until the pin 33 can move up the branch 36 of the slot 34 when the channel 24 is swung on the pin 29 to withdraw the pin 18 and release the scaffold tube 12, whereupon the channel 24 can be swung the other way to release the fastening from the tube 10. In a modification, Figs. 7 and 8 (not shown), the channel is replaced by single flat plate engaging slots in the pins 15, 18 and the bolt head. 25. In another modification, Figs. 9, 10 (not shown), the V-shaped slot is in the bolt head 25 and the pin in the channel 24. The V- shaped slot 34 may be dispensed with and the channel 24 pivoted on the bolt-head 25 and the bolt 26 provided with an easily removable nut or held by a spring to allow it to be moved out to give the necessary room for swinging the channel. The scaffold tubes are of square crosssection and the spigot is formed of diagonally arranged plates in the form of a cross. Each scaffold tube may have two, three or four lugs 11, 13 at each end. The guide plate or. channel 24 may be spring or gravity biased.
Patent GB-177492-A (GB)
Title: Improvements in or relating to fuel mixing or diffusing devices for use in connection with carburettors
IPC: F02M1/00
Filed: 1922-02-13
Abstract: 177,492. Soc. Anon. des Anciens Etablissements Panhard et Levassor. March 22, 1921, [Convention date]. Void [Published under Sect. 91 of the Act]. Gas - mixing appliances.-The charge for an internal-combustion engine is mixed by one or more plates or a tube fitted in the induction pipe between the carburrettor andthe engine and provided with teeth projecting into the mixture passage, The teeth may be of any shape, and may project in the plane of the plate or on one or both sides thereof. In the construction shown, two such plates a are employed with the teeth projection in in opposite directions.
Patent GB-678459-A (GB)
Title: Improvements in the attenuation and winding of continuous filaments formed from a thermoplastic material such as molten glass
IPC: B65H54/28
Filed: 1950-02-20
Abstract: 678,459. Winding glass &c. threads. SOC ANON. DES MANUFACTURES DES GLACES ET PRODUITS CHIMIQUES DE St. GOBAIN, CHAUNY, & CIREY. Feb. 20, 1950 [Feb. 19, 1949], No. 4297/50. Class 120(ii) Apparatus for the production of threads &c. made of continuous fibres obtained by attenuating filaments' of thermoplastic material, comprises a reservoir 1 for containing the molten material, e.g. glass, orifices in the reservoir for the issue therefrom of streams of the material, means 3 for collecting the streams in the form of an untwisted thread, two collars 5, 7 carried on parallel or co-axial shafts and means, e.g. belts 10, 10<SP>1</SP> for rotating the collars, a bobbin carried on each collar and upon which the thread is to be wound, and a thread guide 6 having its axis fixed with regard to the collars, the guide being adapted to act upon the thread so that it is wound successively and without any appreciable interruption of attenuation,. first on one bobbin and then on the other, the filled bobbin being removed and replaced by an empty one while the other is being wound. The guide 6 is furnished with thread-guiding blades on its periphery and is reversed by gearing 14, driven from the motor 9 through reduction gearing 8. when one bobbin has been filled. For doffing, the collars 5, 7 are swung back about axis 18, 18<SP>1</SP>. The blades of the guide 6 may be irregular or replaced by fingers.
Patent GB-1366136-A (GB)
Title: Drinking cups
IPC: A47G19/22
Filed: 1972-06-06
Abstract: 1366136 Drinking cups M S KORSHAK 6 June 1972 [10 March 1971] 4331/71 Heading A4A A drinking cup, Fig. 4, comprises a generally cylindrical hollow member 1 having a side wall 2 and a bottom wall, and a base member 4 on which the hollow member 1 is mounted; the base member 4 has a convex outer surface progressively decreasing in diameter from the junction of the base member and the hollow member to the lowermost portion 6 of the base member and the cup is characterized in that the diameter of the lowermost portion 6 of the base member is at least half of the greatest external diameter of the hollow member. As shown, a self-righting drinking cup has curved walls 2 and 5 which provide a convex outer surface. A compartment 7 is provided for receiving ballast. The base member 4 may be bonded to the hollow member 1; in alternative forms the base member may be secured to the hollow member by means of a push or screw fit. The hollow member 1 may be provided with a lid 13, Fig. 7, having apertures 14, 15 provided in a dome-shaped portion. A contents scale in the form of graduation marks (12), Fig. 5 (not shown), may be provided. The drinking cup is generally of plastics construction.
Patent GB-139591-A (GB)
Title: Improvements in rear signalling devices for road vehicles
IPC: B60Q1/34
Filed: 1919-02-21
Abstract: 139,591. Cairns, A. Feb. 21, 1919. Flash signals; roadvehicle signals.-In a signalling-device for indicating the presence of a road vehicle to following traffic, flashes of light are intermittently produced by means of pyrophoric materials. The arrangement shown is suitable for use on cycles, and comprises a shaped block r of pyrophoric material in the annular space between a casing c and an inner tube t, the face of the block being pressed against a striker or rib n by a coiled spring g<1>. The striker n, having teeth upon its operative face, protrudes through a longitudinal slot in the tube t and is carried by a cammember m<1> pressed by a spring g against a cooperating rotatable cam m, upon the spindle s of which a star-wheel w is frictionally secured. The star-wheel is rotated by a striker-pin on one of the wheel spokes and presses the cam m<1> outwards, to be returned by the spring g. During the return movement, flashes are produced by the passage of the striker n along the face of the block r, the flashes being visible through a ruby lens or window l in the casing c. The device may be operated by clock-work.
Patent GB-684850-A (GB)
Title: Improvements in or relating to hinge joints for drawing instruments
Inventor: GILES WILLIAM HERBERT
IPC: B43L9/20
Filed: 1950-02-21
Abstract: 684,850. Mathematical drawing appliances. THORNTON, Ltd., A. G. May 10, 1951 [Feb. 21, 1950], No. 4363/50. Class 97 (iii). [Also in Group XXV] In the hinge joint between the leg members of a drawing instrument such as a compass or dividers comprising an anti-friction thrust type of bearings having a cage member for the antifriction elements mounted in a stirrup member and located between and in frictional contact with the two legs of the instrument so that movement of one leg frictionally drives the other through a similar distance, the cage member comprises a disc 1 having laterally projecting central bosses 2 at least one of which being shaped or provided with means such as complementary serrations 8, 12 on the boss and stirrup limb for inter-connecting or locking the disc 1 to the limbs of the stirrup member 9 so that the stirrup is self-centred and the manipulating handle 10 requires only to be attached to the stirrup. As shown, the serrations 12 in the stirrup surround a hole therein adapted to receive a headed set-screw 13 engaging a tapped hole in the central boss 2. Both bosses 2 form bearing surfaces for the legs 6 of the instrument and a further headed set-screw 11 passes through the other stirrup limb and engages the tapped bore of the boss 2 to give rigid support to the disc 1. A friction disc or ring 7 is provided between each instrument leg 6 and the adjacent stirrup limb, the frictional resistance between the disc 7 and stirrup being adjusted by screw 13 and by a further screw 16 fitted to the lower end of the stirrup member 9. Specification 207,383, [Class 65 (ii)], is referred to,
Patent GB-706742-A (GB)
Title: Improvements in or relating to lubricating oil additives and a process for their preparation
IPC: C08F222/14
Filed: 1952-02-19
Abstract: Esters of a , b -unsaturated polycarboxylic acids or anhydrides, prepared with an excess of 2.3 to 15 per cent. of one or more long chain aliphatic alcohols are copolymerised with one or more low molecular weight vinyl compounds, e.g. vinyl acetate or butyrate, isopropenyl acetate, a -chlorvinyl acetate, styrene, a -methyl styrene and acrylonitrile, in the presence of the said excess of alcohol and a catalyst.  Esters of e.g., fumaric, maleic, citraconic, mesaconic, itaconic, and aconitic acids and alcohols such as octyl, iso-octyl, 2-ethyl hexyl, nonyl, 2, 2, 4,4-tetramethylamyl, decyl, dodecyl, tetradecyl, cetyl, stearyl or a mixture of methyl and stearyl alcohols and hydrogenated coconut oil alcohols may be used. Single alcohols contain an average of 8 to 18 carbon atoms and if a mixture is used an average of 7.5 carbon atoms is necessary. Catalysts, e.g. hydrogen, benzoyl and lauroyl peroxides, cumene, urea and t-butyl hydroperoxides, potassium and ammonium persulphates, t-butyl perbenzoate or redox systems such as benzoin and ferric laurate are used in bulk or solution polymerization in such solvents as naphtha, lubricating oil fractions, white oil, benzene, toluene, esters, ethers, chloroform and carbon tetrachloride, or suspension or emulsion polymeriations using a soap and a water soluble catalyst. In examples a fumarate ester of a coconut oil alcohol mixture prepared with 2.3 per cent. excess of alcohol is copolymerised with vinyl acetate in bulk or with white oil as a diluent.  The products are useful as lubricating oil additives.ALSO:Copolymers of esters of b -unsaturated polycarboxylic acids or anhydrides prepared with excess of 2.3 to 15 per cent. of one or more long chain aliphatic alcohols, and one or more low molecular weight vinyl compounds e.g. vinyl acetate, or butyrate, isopropenyl acetate, a -chlorovinyl acetate, styrene, a -methyl styrene and acrylonitrile in the presence of the said excess of alcohol and a catalyst, are used as lubricating oil additives.  In examples a fumarate ester of a coconut oil alcohol mixture prepared with a 2.3 per cent. excess of alcohol is copolymerized with vinyl acetate in bulk or with white oil as a diluent.  Pour point depressants are preferably those using alcohols having 11 to 15 carbon atoms per molecule and the viscosity index improvers are those using alcohols in the range of 8 to 10 carbon atoms per molecule.