baber/WOPTO huggingface dataset:
Patent GB-508104-A (GB)
Title: Improvements in or relating to hydraulic control apparatus
IPC: B63H25/28
Filed: 1937-09-21
Abstract: 508,104. Pumps. DONKIN & CO.; Ltd., PAULIN, W, S., and STOREY, E. Sept. 21, 1937, No. 25542. [Class 102 (i)] [Also in Groups XXXIII and XXIX] In hydraulic apparatus in which a pair of rams or equivalent are in operative connection with an element to be displaced and which are adapted to be hydraulically operated by a power-driven variable stroke pump, the stroke varying mechanism of which is actuated by excess pressure in the system to vary the stroke according to the load, the motor driving the pump is a reversible one and the pump always has some stroke from a maximum to a minimum. Rams 2, 3 connected to a rudder tiller 6 are movable in cylinders 4, 5, which are connected by pipes 7, 8 with a variable stroke pump 9 driven by a reversible motor 10. When the motor is a steam engine, it is controlled by a valve 11 from a hand wheel 12 through a floating hunting lever 13. The stroke varying gear includes a differential ram 15, 16, open to pipes 7a, 8a, which branch from the main pipes 7, 8, and these rams act against a spring 14, the compression of which is adjustable by the end plate 19. When an electric motor is used, the valve 11 is replaced by a corresponding switch gear.
Patent GB-901312-A (GB)
Title: Pyridylcarbamyl lower alkane derivatives and processes for preparing them
IPC: C07D213/75
Filed: 1959-07-24
Abstract: The invention comprises mono-N-substituted-carbamoyl-lower-alkanes having a hydroxy, lower-alkanoyloxy, carbamoyloxy or N-mono- or di-lower-alkyl-carbamoyloxy group attached to a carbon atom of the alkane chain, which carbon atom is separated from the carbamoyl nitrogen atom by at least the carbonyl group and carries also at least one monocarbocyclic group, optionally substituted by halogens or lower alkyl or alkoxy groups, the N-substituent being a pyridyl residue joined to the carbamoyl nitrogen atom through a carbon atom of the pyridine ring, which may carry one or more simple substituents not adversely affecting the pharmacological properties of the compound (e.g. halogen, methyl, methoxy, nitro or trifluoromethyl), and the term "lower" denoting the presence of not more than 4 carbon atoms, and their acid addition and quaternary ammonium salts, and the preparation thereof by reacting an appropriate aminopyridine with an appropriately substituted lower alkanoic acid or a lower alkyl ester or acid chloride thereof.  The products possess analgesic and central nervous system depressant properties.  Specification 901,311 is referred to.
Patent GB-502679-A (GB)
Title: Drink vending machine
IPC: G07F13/10
Filed: 1937-09-21
Abstract: 502,679. Dispensing beverages. DEHN, F. B. (Mills Novelty Co.) Sept. 21, 1937, No. 25626. [Classes 27, 106 (v), and 116] A beverage vending apparatus comprises a housing 11, Fig. 2, accommodating a vessel 12 provided with a joint ring 15 in which seats an inverted bottle 14 containing the beverage to be dispensed. The vessel 12 communicates through a pipe 17 with a valve-box 19 mounted on a boss 22 on the housing, the valve-box being surmounted by a measuring vessel 26 provided with an adjustable breathing pipe 91 whereby the level to which the beverage rises in the measuring vessel may be varied. A three-way valve 18 is governed, mechanically by known coin-freed mechanism so that first the beverage is charged from the vessel 12 into the measuring vessel and then, after an interval determined by a clock mechanism, the beverage is drained from the measuring into a positioned drinking vessel 48. The drinking vessels are stored in a shoot 49, Fig. 1, and are released one at a time by known mechanism actuated by a bar 41, each drinking vessel descending a guideway 51 into a positioning arm 52. On the insertion of a coin into the slot of the machine, the subsequent turning of a control handle rotates a gear-wheel 33, Fig. 5, causing pins 34, 34<1> thereon first to rock a lever coupled to the bar 41 in order to actuate the drinking vessel releasing-mechanism, and then rocking a lever' 75 against spring resistance 78 to actuate a bar 85 coupled to a crank 86 on a spindle actuating the valve 18. By this movement, the valve allows beverage to flow from the vessel 12 into the measuring vessel 26, and the lever 75 is maintained in the actuated position by the engagement of a tooth 82 on the lever with teeth 84 on a lever 69. The rotation of the gear 33 drives a pinion 53 having a stud 54 which, swings a lever 55 in an anticlockwise direction, thereby releasing a tail-piece 68 on the lever 69, so that the lever 69 may be urged upwards by a spring 72 to lock the tooth 82. The downward, movement of the lever 55 rocks an arm 58 coupled by a pawl-and-ratchet gear to the gears of a clock mechanism 59, the pendulum 97 of which then oscillates giving a timed, delayed return to the lever 55, such return being permitted owing to the stud 54 having moved clear of the lever 55. On the return of the lever 55, the tail-piece 68 is engaged, thereby tripping the locking lever 69 and releasing the tooth 82, whereby the lever 75 turns under the influence of the spring 78 and rocks the crank 86 to set the valve in such position that the beverage is drained from the measuring vessel into the drinking vessel. The valve remains in this position until the insertion of the next coin and operation of the control handle.
Patent GB-872837-A (GB)
Title: Improvements in or relating to transistor amplifiers
IPC: H03F1/56
Filed: 1959-07-27
Abstract: 872,837. Transistor amplifying circuits. TELEFUNKEN G.m.b.H. July 27, 1959 [July 31, 1958], No. 25680/59. Class 40(6) The input impedance of a common emitter or common collector amplifier is increased by feeding a signal voltage developed across a negative-feedback resistor in the emitter circuit to two points on the base biasing potentiometer, on opposite sides of the base so as to prevent leakage of input signal through the base biasing circuit. In Fig. 1, leakage of signal via resistors R2, R3 of the base biasing circuit is minimized by coupling the signal voltage present at the emitter via capacitors Cl, C2. In Fig. 4, the operating stability is improved by feeding the base bias from the collector. Fig. 2 (not shown) relates to a circuit in which resistor R1 is omitted and R2 is connected directly to R5. In Fig. 3 (not shown), the load RL is fed from the emitter circuit.
Patent GB-1362470-A (GB)
Title: Commutator and slip-ring assemblies
IPC: H01R39/08
Filed: 1972-06-01
Abstract: 1362470 Insulating commutators and slip rings BBC BROWN BOVERI & CO Ltd 1 June 1972 [3 June 1971] 25722/72 Heading H2A An annular component shrink-fitted on to a second component, comprising a commutator or slip-ring assembly of an electrical machine, e.g. a rotary motor, is electrically separated from the second component by an insulating sheet 3 comprising at least one layer 4 of a plastics insulating film and at least one layer 5 of mica or mica-containing paper. As shown in Fig. 1, wherein a slip-ring 2 is shrunk on to a shaft 1, the plastics layer 4, a polyimide, is placed facing the slip-ring to mechanically and thermally protect the other layer, 5. In the commutator of Fig. 2, a shrink-ring 6 is shrunk on to a laminated component 7, with the interposition of the sheet 3. The sheet may comprise three or five layers, of which the middle and outer layers are of the plastics film.
Patent GB-1114999-A (GB)
Title: Improvements relating to the inspection of metallic objects
IPC: G01N27/90
Filed: 1966-06-09
Abstract: 1, 114, 999. Electro-physical measurement. REPUBLIC STEEL CORPORATION. June 9, 1966 [June 10, 1965], No. 25825/66. Heading G1N. Apparatus for detecting flaws in metallic objects comprises a pair of search coils connected in series opposition with a similar number of turns and their axes parallel to one another, whereby the effects of ambient stray fields from near-by apparatus (e. g. welding apparatus) cancels out. The coils are energized from an H. F. oscillator, Fig. 10 (not shown) and changes in loading (impedance) of the coils due to flaws and cracks cause variations in the oscillator output which is demodulated and fed to a control or indicating device. The oscillator is provided with an A.V.C. feedback circuit to cancel slow changes in output due to e. g. slight curvature of a tested sheet. As described with reference to Fig. 1 (not shown), the coils are mounted for rotation on a vertical spindle, and belt driven by an electric motor; connection to the coils is made through slips rings; and a wear-shoe or bearing plate is provided under the coils. This arrangement is used for scanning sheet metal. Several alternative coil constructions are illustrated Figs. 3-9 (not shown) in which the coils are 'potted' and located in bores in an insulating block with a phono-jack connection on top. The bearing plates and coils may be contoured for use on curved surfaces.
Patent GB-1533169-A (GB)
Title: Oligomerising c3-c8 olefins
IPC: C07C11/02
Filed: 1976-06-22
Abstract: 1533169 Oligomerizing C 3 -C 8  olefins BRITISH PETROLEUM CO Ltd 1 June 1977 [22 June 1976] 25884/76 Heading C5E C 3 -C 8  mono-olefins are oligomerized, to form mainly dimers and trimers, in the presence of a catalyst comprising a gallium compound on a support, e.g. alumina, silica or silica-alumina. Other metals such as Pt, Pd, In, Ge, Tl, Cr, Sn, Zn, Fe, Co and/or Ni may also be present in small amounts. The oligomerization may be carried out at 50-250 C. and 15-1500 p.s.i.g., optionally in the presence of an inert diluent.
Patent GB-793568-A (GB)
Title: Grass verge trimmer
IPC: A01D34/84
Filed: 1955-09-09
Abstract: 793,568. Verge trimmers. SHARPE, A. R., and BROWN, A. E. Dec. 3, 1956 [Sept. 9, 1955], No. 25885/55. Class 6(2). A verge trimmer comprises a motor-driven rotary blade cutter of the type operating without a ledger blade, a front guide member 45 and means for raising and lowering the guide member and the rotary cutter into or out of their respective operative positions. The drive from the motor is transmitted to the rear roller 4 through V-belts 6, pulleys 7 fixed to a main shaft 8, a V-belt 9, a counter-shaft 10 having a cone clutch mechanism 11-14 and a V-belt 18. The clutch is operated by an arm 15 mounted on a bracket 16 and connected to a Bowden cable 16a. The drive to the rotary cutter is from the main shaft 8 projecting beyond the frame 3 and carrying a movable hub 21 which supports a hollow member 22. An arm 23, which projects into the member 22, carries an axle on which is a rotatable sleeve 24 connected via pulleys 26 and 27 and a V-belt 25 to the main shaft 8. The rotary cutter, comprising a disc 28 to which are bolted four reversible cutting blades 29, is rivetted to the sleeve 24. The blades 29 are at right angles to each other and project beyond the edge of the disc. The hub 21 also carries an operating handle 30 and an arm 35 pivotally connected to a link 36 which through a pin 39, an arm 38, a rotatable spindle 37, a fixed sleeve 40, an arm 41, and a rod 44 controls the guideplate 45. The operating handle 30 has a spring- loaded detent 31 co-acting with recesses 33, 34 in a quadrant 32. When the detent is in recess 33 the rotary cutter and guide-plate are lowered into the operative position, and when the detent is in recess 34 they are withdrawn. Additional recesses may be provided in quadrant 32 to vary depth of cut. If desired, the front guide mechanism may be controlled by means of slotted links.
Patent GB-604469-A (GB)
Title: Improvements in or relating to refractometers
IPC: G01N21/43
Filed: 1945-10-08
Abstract: 604,469. Refractometers. INSTITUT D' OPTIQUE THEORIQUE ET APPLIQUEE. Oct. 8, 1945, No. 26212. Convention date, May 26, 1944. [Class 97 (i)] A refractometer includes a transparent block, the entrance face of which is a curved surface all the sections of which orthogonal to a given direction are circular arcs and the exit face of which for light that has struck said entrance face with tangential or total reflection limit incidence, is in the form of a plane parallel to this direction ; the material whose refractive index is to be determined is placed in contact with the entrance face. As shown in Fig. 2, the block A, B, C, which may otherwise be bounded by plane faces, has a spherical face A, B, contacting the substance under test. Rays tangential to this face are refracted, the envelope of the refracted rays being a sphere, the line of intersection of which with the plane face A, C, forms the boundary between bright and dark. A scale formed on surface A, C, or movable thereover to allow for variations as of temperature, may be observed through known magnifying apparatus, such as an eyepiece movable to bring the boundary lines obtained for different samples into its field, and by use of a formula given in the Specification, the index number is determined. Monochromatic light is preferably used, but if not, means are provided to prevent different boundary lines being formed for the different wavelengths. Thus, the block A, B, C, may be constituted by two glass elements A, C, Cc, Ac, and Ac, Cc, B, Ac, Fig. 7, of different dispersions and equal refractive indexes so that by suitable shaping of the surface Ac, Cc, achromatism is obtained. For the same purpose, a block formed of three pieces of different glass, may be moved over the block A, B, C, as Fig. 2. When the sample is a liquid, a surface of another block is shaped to the curvature of surface A, B, and the liquid is held therebetween ; this block may be opaque when the total reflection principle is employed. The Specification as open to inspection under Sect. 91 also described an embodiment wherein the sections of the curved surface orthogonal to the plane of the exit face are logarithmic spirals. This embodiment is apparently for use in checking the known refractive index of a sample. When the sample is a liquid, it may be formed into a cavity formed between the surface A, B, of a block A, B, v, u, (Fig. 10, Cancelled) and a wall z, the block having an index smaller than that of the liquid. To provide achromatism when monochromatic light is not used, the movable block formed of thin different glasses may be used with the block A, B, C, of Fig. 7, or a suitable colour filter may be placed in the light path as at a in Fig. 10. This subject-matter does not appear in the Specification as accepted.
Patent GB-1068395-A (GB)
Title: Improvements in and relating to joint between pipes
IPC: F16L27/10
Filed: 1965-06-22
Abstract: 1,068,395. Pipe couplings; joint-making packing. CENTRE DE RECHERCHES DE PONT-A-MOUSSON. June 22, 1965 [June 26, 1964], No. 26305/65. Headings F2B and F2G. A spigot and socket pipe coupling comprises a sealing ring R which has a body portion 4 co-operating with a groove 17 in the socket and a lip 5 which projects towards the mouth of the socket, which mouth is provided with a substantially cylindrical portion which has an internal diameter slightly greater than that of the spigot. The substantially cylindrical portion is formed with a plurality of annular grooves the lands between which have rounded crests (Fig. 2, not shown). The spigot and socket are provided with sheaths 1, 1a of plastics material.
Patent GB-463193-A (GB)
Title: Improvements in or relating to corsets, body belts, and like garments
IPC: D05B73/12
Filed: 1935-09-23
Abstract: 463,193. Corsets &c. LIGHTNING FASTENERS, Ltd. Sept. 23, 1935, No. 26325. Convention date, Sept. 29, 1934. [Class 141] In corsets, body belts, &c. having an opening extending from one edge and closed by a sliding fastening, the opening is provided with a flap underlying the fastener and attached on one of its edges to the garment along the whole length of the opening ; the lower portion only of the other edge of the flap is attached to the garment and takes lateral strains when the fastener is fully open. The flap 9 is secured along its edge 10 by the same stitches as secure the fastener strip, while the lower part of the other edge is secured by a row of stitches 13 in zigzag form, the row deflecting at a part 16 which is normal to the line of strain when the garment is removed, and then returning at 15.
Patent GB-1099634-A (GB)
Title: Improvements in and relating to magnetic display devices
IPC: G09F7/04
Filed: 1965-06-22
Abstract: 1,099,634. Magnetic holding devices; magnetic Structures. M. BAERMANN. June 22, 1965 [June 27, 1964; Jan. 15, 1965], No. 26400/65. Headings H1H and HIP. [Also in Divisions E2 and G5] A display comprises a board provided over its surface with equally spaced stripes of alternating polarity (Fig. 3), or of magnetizable material (Fig. 7), symbols for magnetic attachment thereto being provided with similarly spaced stripes of alternating polarity and the lowermost pole stripe of each symbol being of the same polarity whereby a series of symbols is automatically correctly aligned. The symbols and board are preferably made from a powdered permanently magnetic material such as the ferrites of barium, strontium or lead compounded with a thermoplastic binder. Such a board may be secured to a wooden, plastics or sheet iron backing. Alternatively, the board may comprise a non-magnetic backing into which wires or tapes or iron powder compounded with a binder are inserted. In a further embodiment (Fig. 9, not shown), grooves provided by sheet iron bent into square wave shape are filled by non-magnetic material. The board may be in the form of a flexible endless band passed around two rollers of which one is driven.
Patent GB-507873-A (GB)
Title: Method of briquetting coal without the aid of binders
IPC: C10L5/08
Filed: 1938-09-09
Abstract: 507,873. Agglomerating fuel. FUEL IMPROVEMENT CO., Ltd. Sept. 9, 1938, No. 26410. Convention date, Aug. 5. [Class 50] [Also in Group V] Coal is comminuted so as to consist at least of 50 per cent of particles not exceeding À08 mm. and containing only small amounts of particles exceeding 1 mm, the coal dust being then pre-compacted to a bulk density of 55 to 85 gram per cubic centimetre and finally pressed in a bar-forming press. Ring-roller presses in which the diameter of the press track of the inner roll amounts to at least two-thirds of the diameter of the press track of the outer ring are particularly suitable. The material may be pre-compacted by deaeration as by pumping out air therefrom, or by subjection to gravitational or centrifugal force, or static, hydraulic, or pneumatic pressure.
Patent GB-1107003-A (GB)
Title: Descaling or turning machines for rods and tubes
IPC: B23B5/12
Filed: 1965-06-22
Abstract: 1,107,003. Cleaning pipes. M. VON BUSHE, and T. ALTENBRACHT, [trading as TH. KIESERLING & ALBRECHT]. 22 June, 1965 [l9 Aug., 1964], No. 26431/65. Heading F2N. [Also in Division B3] A machine for de-scaling or turning pipes or rods comprises two reciprocating carriages 5 and 6 disposed on either side of a rotating cutter head 2 for feeding and withdrawing a pipe or rod 31 therethrough, said carriages being run temporarily at a synchronized speed and being capable of independent movement at an increased speed in the direction of feed. The head is belt-driven by a motor 4 and the carriages synchronously driven by a motor 7 through a common gear train 8 coupled to two driven shafts of worms 14a and 15a through clutches 9 and 10 respectively, the worms engaging pinion shafts 11 and 12 which themselves drive their corresponding carriages 6 and 5 through a rack and pinion arrangements 13 and 13a respectively. To enable either carriage to move independently of the other at an increased speed, the worm gear shafts are driven from the intermediate gear chain through additional gear and clutch transmissions 10a, 25a, 25, 20, 19 and 18 and 26, 27, 29, 29a and 9a respectively. In operation, pipes or rods for descaling or turning are fed from a rack on to rollers 5a and 5b of the feeder carriage 5. On closure of pipegripping jaws 45, carriage 5. moves towards the cutting head at an increased speed independent of the movement of carriage 6, the coupling 10 being disengaged and the carriage drive being taken through clutches 25 and 20. Abutment of the pipe 31 against the end of the being- treated pipe 31f passing through the head causes clutch 20 and associated gear part 19 to separate and trip a limit switch 48 through cam means 19a and 22, Fig. 3 (not shown). Operation of this switch disengages clutch 25 and re-engages clutch 10 to ensure the speed of carriage 5 is reduced and synchronized to that of carriage 6. On the end of the being-treated pipe 31f leaving the head, clutch 9 is disengaged and clutch 29 engaged thereby moving the carriage 6 away from the cutter head at an independent, increased speed. Separate motors 16 and 17, connected through suitable gearing to worms 14a and 15a respectively, return the carriages to their initial positions, the operation of said motors being controlled by control means such as limit switches or photo-electric cells.
Patent GB-762916-A (GB)
Title: Internal combustion engines of the piston type
IPC: F01L7/12
Filed: 1954-09-13
Abstract: 762,916. Valves. SULZER FRERES SOC. ANON. Sept. 13, 1954 [Sept. 19, 1953], No. 26488/54. Class 7 (6). A common valve 9 in series with pistoncontrolled inlet or exhaust ports 6, 7 of a transverse cylinder pair 1, 2 and lying between the cylinders is engine-driven at a frequency which is an integral multiple of that of the working cycle. As shown applied to a twostroke V-engine, the valve 9 rotates at twice crank-shaft speed and controls exhaust, but it may be applied to V-engine inlet control, or to inlet or exhaust control of transversely paired in-phase or out-of-phase cylinders of doublecrank-shaft engines with parallel cylinder banks. In a two-stroke engine, the valve 9 may control two rows of ports for scavenging and charging air respectively. In a four-stroke engine the valve 9 may rotate at three times the working cycle frequency and may control supercharging air additional to the normal suction air. Oscillation of the valve 9 is mentioned.
Patent GB-176822-A (GB)
Title: A new or improved process for the manufacture of solid fuel, and the distillation oftar
IPC: C10L5/10
Filed: 1920-09-16
Abstract: 176,822. Strafford, W. W., and Pick, S. Sept. 16, 1920. Materials for making coke and other products. -Carbonaceous materials such as anthracite or coke are ground and mixed with a compound of barium such as barium carbonate and preferably a proportion of charcoal, and the mixture treated with coal, water-gas or blast furnace tar in sufficient quantity to bind the mass together, which is then heated in a retort. Tar is distilled off which is free from pitch and free carbon and a smokeless full product obtained.