baber/WOPTO huggingface dataset:
Patent GB-966428-A (GB)
Title: Improvements in or relating to lawn mowers
IPC: A01D43/16
Filed: 1962-07-09
Abstract: 966,428. Edge trimmers. V. T. LEGGE. July 5, 1963 [July 9, 1962; Jan. 11, 1963; March 5, 1963], Nos. 26302/62, 1426/63 and 8720/63. Heading A1F. An edge trimming device mounted on a lawn mower comprises an auxiliary cutter assembly 25 driven from the main cutter shaft of the mower and housed in a casing 20 at least part of which is rotatably mounted on the mower whereby the cutter may be moved from a raised inoperative position (shown dotted) to a lowered operative position under the control of a manually or foot operated control device, a support member being attached or formed integrally with the casing and engaging along and/or over the lawn edge for positioning the cutter assembly. The cutter 25 comprises a ledger blade 29 forming part of the casing and blades 26 mounted on a shaft 24 driven from the main cutter shaft 17 by chain and sprocket drive, means being provided for interrupting the drive when the cutter assembly is in the raised position. The support member comprises an arm 35 the end 36 of which is turned outwardly to provide an extension adapted to lie over the edge of the lawn, the arm also carrying a vertical plate 40 for engagement with the side of the lawn. The casing may also support a roller or wheel for engaging the surface adjacent the lawn edge. The plate 40 may be extended upwardly above the level of the lawn, the upper half of the plate then being provided with a support roller. Specification 840,723 is referred to.
Patent GB-446070-A (GB)
Title: Improvements in internal combustion engines of the opposed piston type
IPC: F02B75/28
Filed: 1935-09-23
Abstract: 446,070. Opposed-piston oil engines. RENO, E., Chabreloche, Puy de D¶me, France. Sept. 23, 1935, No. 26323. Convention date, Sept. 24, 1934. [Classes 7 (ii) and 7 (iii)] In an engine having opposed pistons 4, 8 and a precombustion chamber 28 in communication with the space 29 between the pistons, the volume of the chamber is a maximum at the moment when fuel is injected through a nozzle 19 and diminishes during the expansion stroke to expel the burnt gases. The precombustion chamber is formed either by a cylinder in which a piston 16 integral with the piston 8 reciprocates or by a cylinder integral with the piston 8 which slides over a stationary piston carrying the injector. The communication between the chamber 28 and the space 29 is provided by helicoidal or oblique passages 22 in a core piece 21. The lower parts of the cylinder and the piston 4 are preferably enlarged to form a scavenging pump 23, 24 which delivers air through a passage 27 into an adjacent cylinder when admission ports 6 are uncovered by the piston 8.
Patent GB-1279711-A (GB)
Title: A method and apparatus for stowing and packing debris in mines
Inventor: LOCKWOOD PETER
IPC: E21F15/06
Filed: 1969-05-23
Abstract: 1279711 Mines; filling pack-holes LOCKWOOD BENNETT Ltd 26 May 1970 [23 May 1969] 26329/69 Heading E1F [Also in Division B8] Apparatus for filling a pack-hole with debris comprises a debris sweeping means attached to one or more chains extending between anchored sprockets and means to prevent movement of debris away from the resulting pack. Sweeping means 14, Fig. 2, is reciprocated by chain 13 extending between sprockets 15 and 17 to sweep debris from hopper 33 to fill pack-hole 4. Sweeping means 14, mounted near the pack-hole roof, consists of a sweeping blade 46. Fig. 6, pivotally mounted on plate 41 attached to chain 13. Blade 46 may be secured to slope downwards in the direction of sweeping movement by removable pin 49 engaging aligned holes in brackets 47, 48. Pivotally connected plates 19, 21, 23, 26 and 28 form a pack retaining shield attached to chocks 30. Hydraulic packs 31, 32, attached to roof supports 8 or 10 and chocks 30, serve to advance the shield and hopper. Hydraulic jacks may also be used to raise the hopper and move sprocket 17 to tension the chain. The hopper may support means for removing a ripping lip, e.g. a cutting head or a drill to bore shot holes. (For Figures see next page)
Patent GB-1137329-A (GB)
Title: A process for the manufacture of 3,3-(alkylenedioxy or dialkoxy)-alkyl halides
IPC: C07D317/12
Filed: 1967-06-07
Abstract: 1,137,329. 3,3-(Alkylenedioxy or dialkoxy)- alkyl halides. F. HOFFMANN-LA ROCHE & CO. A.G. 7 June, 1967 [7 June, 1966], No. 26339/67. Heading C2C. 3,3-(Alkylenedioxy or dialkoxy)-alkyl halides of the general formula where R is a C 1-6  alkyl group, Z is (C 1-6  alkylenedioxy) - methylene or di - (C 1-6  alkoxy)-methylene, X=Cl, Br or I, are prepared by reacting HCl, HBr or HI with an alkene-(1) of general formula under anhydrous conditions and at a temperature below 25 C. The reaction may be performed in an alkanol or alkanediol as solvent, wherein the hydrocarbon portion is the same as that of the alkoxy groups or alkylenedioxy group in the alkene. In the example, 3,3-(ethylenedioxy) - pentene - 1 is reacted with HBr in ethylene glycol to yield 1-bromo-3,3-(ethylenedioxy)-pentane. The starting material, alkene-1, may be prepared by reacting an alkanone-3 with an alkanol or-alkanediol and then with halogen to give a 2-halo-ketal which is dehydrohalogenated with a base.
Patent GB-1510276-A (GB)
Title: Production of bipolar integrated circuits
IPC: H01L21/8222
Filed: 1976-06-25
Abstract: 1510276 Semiconductor devices SIEMENS AG 25 June 1976 [2 July 1975] 26455/76 Heading H1K In a process, suitable for producing a bipolar integrated circuit on a doped semiconductor substrate, a doped zone or zones of a bipolar transistor and an insulating frame for the transistor are formed in etched troughs in the substrate surface formed through windows in a surface insulating layer. The remaining required doped transistor zones are formed by introducing dopant through the flank surface of the troughs which have been exposed by preferential ion beam etching through a mask at normal incidence through a further insulating layer applied to the substrate surface within the troughs. In the embodiment shown, a p-type silicon substrate 1, covered with a silicon oxide layer 22, has troughs 71 in which p<+>-type zones 72 are produced by ion implantation to form an isolation frame. The base zone of the bipolar transistor is formed by ion implantation of p<+>-type zone 92 through a photo-lacquer or Al masking layer (not shown), above a window 6 over the trough 611, and into a previously formed ion implanted n-type zone 91. A further insulating layer 10 is formed in the troughs by thermally oxidizing the surface, following the removal of the mask. During the thermal oxidation, further diffusion of zones 91 and 72 occurs, to yield zones 911, 721, and also zone 92 extends to yield zone 921, Fig. 6. A masking layer 12, of photolacquer or Al, is applied before bombardment by a vertical ion beam 19, Fig. 7. This bombardment removes the oxide at the oblique flanks 14 twice as rapidly as at the horizontal oxide surface within the troughs, to yield the reduced oxide layer 101 shown in Fig. 7. In a further step, Fig. 8, the masking layer 12 is removed, and replaced by another masking layer, of photo-lacquer or Al, structured to allow ion beam n<++>-type doping of the exposed trough flanks 14, to yield emitter zone 16 and collector zone 17 of the bipolar transistor having a base zone 921. The process of the invention can be applied to the production of p-n diodes, Schottky diodes, resistors, or multi-emitters.
Patent GB-1493339-A (GB)
Title: Photography
IPC: G03B1/42
Filed: 1976-06-11
Abstract: 1493339 Photographic systems W VINTEN Ltd 11 June 1976 [21 June 1975] 26487/75 Heading G2E A photographic system has film transport means such that the film is curved in the gate area, and an, image transfer means which is also curved in the gate area and planar at its other face, which is towards a lens system. The Fig. shows an intermittent film transport system of the rolling loop type, as disclosed in Specification 1171248, the film passing from a feed sprocket 2 to a take-up sprocket 3, and passing through the gap between a stator 4 and rotor 1, the latter having a number of horns 9. The film image passes through an image transfer means 7 to a lens system 8. Means 7 is in the form of a fibre optic block, which has a concave face on one side parallel to the curved face of a horn 9, and its other side parallel to the focal surface of best definition of lens 8, which in the form shown is planar. Such an arrangement gives improved image definition.
Patent GB-262558-A (GB)
Title: Improvements in wind turbines
IPC: F03D7/02
Filed: 1925-10-22
Abstract: 262,558. Newton, F. Oct. 22, 1925. Regulating.-Wind turbines. for use particularly on aircraft have their speed automatically controlled by making each blade 9 revoluble about its own axis in the hub 1, 2 and providing a radially guided weight 10 sliding under centrifugal force against the action of a spring 11. Rollers 13. 14 carried by the weight engage and hold in register mutually inclined slots 16, 15 in fixtures on the hub and blade respectively. The setting of one of the slotted members 7 may be adjusted by making it in two concentric serrated parts, which may be separated and re-engaged in a fresh position. To secure that all the blades move together, each has a projection 17 engaging in a common spider 18 rotatable upon a sleeve 5.
Patent GB-969397-A (GB)
Title: Improvements in or relating to switches for electrical apparatus
IPC: H01H19/635
Filed: 1962-07-10
Abstract: 969,397. Mechanical switches without quick action. PHILIPS ELECTRICAL INDUSTRIES Ltd. July 10, 1962 [July 13, 1961], No. 26493/62. Heading H2B. When one button 7 or 9 of a change-over switch is depressed it uncovers an indicating mark on a surface 5 over which it slides and raises the other button which covers another indicating mark. Each button has a horizontal slot 35 (Fig. 4) which co-operates with one of the pegs 37 of a pivoted contact carrying member 19. Diametrically opposed blade contacts 21 on member 19 co-operate alternately with pairs of fixed contacts 23 and are permanently connected via blade springs 29 to terminal pins 31. The member 19 is retained in its alternative positions by a spring biased locking member 33. The switch forms part of an electric shaver and is used to change the voltage at which the shaver operates.
Patent GB-674809-A (GB)
Title: Method of and apparatus for sinking concrete, cement or the like piles in ground having an excessive moisture content
IPC: E02D15/04
Filed: 1950-10-31
Abstract: 674,809. Piles. RIOS, L. I. V., and FRAVEGA, L. A. J. M.Oct. 31, 1950. No. 26507/50. Class 68 (ii). A concrete pile is cast in situ by sinking the bottom of the lowest part 6 of a three-part hopper and tubular member into the ground, sealing off each part from the other by means of hatches 8 . . . 11, supplying air pressure to the sunk part (which contains reinforcement 39) to drive out any water, supplying concrete to the hopper part 7, equalising pressures between the top and middle parts 7, 2 by opening hatch 10, passing the concrete to the middle part by opening hatch 8, reclosing batches 8, 10, equalising pressures between the middle and lowest parts 2, 6 by opening hatch 11, allowing the concrete to drop to the bottom of part 6 by opening hatch 9, reclosing hatches 9, 11 and tamping the concrete by a motor or manually operated hammer head 33.
Patent GB-425999-A (GB)
Title: Improvements in or relating to type setting systems
IPC: B41B25/00
Filed: 1933-09-26
Abstract: 425,999. Type - making machines. TELETYPE CORPORATION, 1400, Wrightwood Avenue, Chicago, U.S.A.-(Assignees of Morey, W. W.; 1516, Chestnut Avenue, Wilmette, Illinois, U.S.A.) Sept. 26, 1933, No. 26512. Convention date, Sept. 28, 1932. [Class 100 (iii)] Strip-perforating machines; justifying type.- Indicating-mechanism for perforating-machines of the kind described in Specifications 416,796 and 420,084 is modified, in order to facilitate the composition of tabular matter, by making the scale movable with the pointer that indicates the minimum thickness of the spacebands, so that the zero position of the scale is changed as each spaceband is added. The dial 15, over which the pointers move, has a scale 14 movably mounted on its outer edge by means of slots and studs, and the scale is connected to the pointer 18 that indicates the minimum thickness of the spacebands in the line. The position of the matrixpointer 16 therefore indicates the total thickness of the matrices in the line together with the thickness of the unexpanded spacebands, and the pointer 17 indicates the justifiability of the line, as heretofore. By this means, the operator can compose tabular matter without the necessity of adding mentally the readings of the pointers 16, 18, in order to determine the point at which a column is to begin. The scale may be of celluloid or other material on which erasable marks may be made, in order to indicate the commencement of the various columns.
Patent GB-331134-A (GB)
Title: Improvements in covers or muffs for the bonnets of motor vehicles
IPC: B60K11/04
Filed: 1929-08-31
Abstract: 331,134. Sutton, B., and Haughty, G. S. Aug. 31, 1929. No Patent granted (Sealing fee not paid). Rugs, travelling and like.-A fabric cover for the bonnet and radiator of a motor-car, adapted alternatively for use as a rug for the occupants, comprises a leather &c. sheet 1, preferably lined with felt, with a fixed or loose flap 7 for part of the front of the radiator and a further loose flap 9 to cover the whole or part of the radiator front.
Patent GB-431129-A (GB)
Title: An improved process for rationally producing compressed yeast and spirit
IPC: C12N1/18
Filed: 1933-09-26
Abstract: In a process for the production of yeast, with or without the production of alcohol, pitching yeast is mixed with liquor which is free from sugar, and sugar-containing wort is supplied to the mixture in regulated quantities while aerating.  The pitching yeast is acidified with a salt of phosphoric acid, e.g. superphosphate.  In an example, for the production of yeast without alcohol, 20 kg. of pitching yeast is dissolved in 700 litres of water containing 7 per cent of superphosphate and 7 per cent of ammonium sulphate, and is allowed to act for 40 minutes. A total amount of 41,2 kg. of molasses, 3kg. of superphosphate and ,9 kg. of ammonium sulphate are subsequently added.  The molasses supply begins with full aeration and continues for 9 hours and the nutrient salt supply begins one hour later and continues for 8 hours.  Alcohol also is produced if, after some hours the supply of molasses is increased and the aeration is diminished.
Patent GB-301595-A (GB)
Title: Improvements relating to mining machines
IPC: E21C35/04
Filed: 1927-10-08
Abstract: 301,595. Anderson, A., and Anderson, Boyes & Co., Ltd. Oct. 8, 1927. Combinations of two variable-speed gears.- A mining machine has gearing between the motor and the haulage drum or sprocket to provide two or more forward cutting speeds, two or more reverse cutting speeds and one forward and one reverse flitting speed, a slip clutch interposed between the motor and gearing being so arranged as to be less liable to slip when the gear ratio between the motor and the haulage drum &c. is reduced. The gearing shown is out of correct alignment for clearness, the pinion 18 actually engaging a gear 34 to drive the haulage drum 35 through sun gear 40, the planet gears 38 carried by a stationary spider 39 and meshing with an internal gear carried by the drum 35. The motor shaft 15 carries a sliding pinion 16 adapted to drive a forward gear 1 directly or to drive a reverse gear 2 through an idler pinion 17, the gears 1, 2 being rigid' with a sun pinion 3 engaging planet gears 10 carried by a brake drum 11 and meshing with an internal gear 12 through which is driven a shaft 4 carrying a bevel pinion 7 engaging loose crown wheels 8, 9. When flitting, the crown wheel 8 is connected by a clutch 23 to a shaft 19 on which the pinion 18 is keyed. When cutting, the clutch 23 is engaged with the hub of a loose pinion 20, the drive then being effected through gears 9, 24, 25, 26, 27, low speed gears 29, 31, or high speed gears 30, 32, according to the position of a clutch 33, and through shaft 22 and gears 21, 20 to the pinion 18. The brake drum 11 is provided with two spring-urged brake shoes 13, 14 controlled by a cam or cams and also forming a control clutch; the lever is so interlocked with the lever controlling the clutch 23 that during cutting, only one brake shoe will be in operation, while when flitting both brake shoes will be in operation so as to make the brake drum less liable to slip.
Patent GB-791297-A (GB)
Title: An improved surgical pin
IPC: A61F15/00
Filed: 1955-09-19
Abstract: 791,297. Surgical pins. ROMANOFF, N. S. A. Sept. 19, 1955, No. 26776/55. Class 43 A surgical pin for use in retaining a drainage tube in a wound is of a safety pin form comprising two tubular parts 10, 11 each of deeply bowed form, made of stiff bendable material and generally uniform throughout, with a hinge connection 12 at one of their adjacent ends, the other end of the portion 11 being cylindrical and hollow with a smooth exterior and an interior formed with integral ribs 15 to provide a frictional joint or connection with the free end of the portion 10, which terminates in a point 13 and has external ribs 14 behind the point to engage the internal ribs of the adjacent end of the part 11. The pin is preferably made of a locally deformable material such as a plastic, which is stiff enough for the pointed end 13 to penetrate a flexible drainage tube 16. The pins may also be used for fastening clothing and babies napkins, and may be made in various colours.
Patent GB-1347272-A (GB)
Title: Knitting machine needle bed and method of producing same
IPC: D04B15/00
Filed: 1971-04-19
Abstract: 1347272 Knitting machines M PHILIP 19 April 1971 [17 April 1970] 26892/71 Heading D1C A metal needle bed has, at the front edge of the needle bed, a hard surface or surfaces substantially even with the bottoms of the needle tricks at least in the areas aligned with the tricks and formed by material 26 harder than that of the bed which is deposited in particulate, liquid or vapour form so that it is substantially integral with the metal of the needle bed. Tricks are cut in bed 10 and metal is removed from areas 22 of the milled forward edge by cutting or milling to receive material 26 which is then ground down. Grooves are then cut in the edge aligned with the trick walls and between areas 22 to receive teeth of steel harder than the bed. The material may be applied in a high velocity inert gas jet at 30,000‹F and may be chromia, alumina, titania, zirconia or tungsten or chrome carbide, refractories, ceramics or pure metals. In a rib machine, the hardened material may be applied along the whole length of the bed.
Patent GB-1043089-A (GB)
Title: Improved kilns and similar heat treatment apparatus
IPC: F04D29/58
Filed: 1964-06-30
Abstract: 1,043,089. Centrifugal fans. SHELLEY ELECTRIC FURNACES Ltd. and D.P. SHELLEY. June 25, 1965 [June 30, 1964], No. 26914/64. Heading FIC. [Also in Division F4] A fan for circulating hot air or gas in a heat treatment apparatus such as a kiln comprises a bowl-like impeller 13, Fig. 6, having a lining 20 of metallic or non-metallic refractory material. The impeller blades 21, which are supported by the lining, are also of refractory material, such as fused alumina or silicon carbide, and are preferably tapered to reduce centrifugal forces. Each blade 21 may be set loosely in a slot 27, Fig. 5 (not shown), in a support block 28 made of silimanite or other refractory material and forming a segment of the lining 20. The loose fit allows for thermal expansion, the blade being held in place by a radially disposed peg 29. The remainder of the lining 20 is formed by refractory insulation bricks or concrete set between the blocks 28 with, it may be, a backing of insulation, material. A labyrinth seal 12 is formed either on the impeller 13 or on a surrounding casing 11. Blades 23 on the outside of the impeller produce a greater pressure than the blades 21 to give a small flow of air at ambient temperature inwardly through the labyrinth seal 12 to cool the metal parts and prevent corrosion. As shown, the fan may be carried by an annular plate 10 which forms the main support for a pottery kiln. Hot air is drawn downwardly through an inlet tube 22 by the fan and discharged through perforations 30a in a hearth 30. In addition to heating or cooling the load, the hot air also provides an air cushion to support the travelling load which comprises either flat objects which are directly supported or other items 31 set on flat bats 32 for support. A portion of the dust entrained in the air is removed in the fan and held against the lining 20 by centrifugal force. Where dust retention is not required, the lining 20 and inlet tube 22 may be curved in cross-section to give better air flow.
Patent GB-520331-A (GB)
Title: Improvements in or relating to materials for use in the production of alloys containing chromium, and to the production of alloys therefrom
IPC: C21C7/00
Filed: 1938-09-15
Abstract: 520,331. Alloys. UDY, M. J. Sept. 15, 1938, Nos. 26984, 26985, 26986, and 26987. Convention dates, Sept. 23, 1937, Jan. 22, 1938, July 23, 1938, and Sept. 7, 1938. [Class 82 (i)] A reaction-mixture for use in the production of chromium alloys is made by oxidizing carbonbearing ferrochromium to a product low in carbon and containing iron and chronium in oxidzed forms, and mixing the oxidized product in the solid state with a solid non-carbonaceous reducing-agent such as silicon, aluminium, magnesium, or alloys thereof, including nickel silicide in the case where nickel is wanted in the final alloy. The ferro-chromium may be produced by reducing low-grade chromite with carbon in a submerged-are electric furnace and may be oxidized in molten or solid form. In the former case the melt is blown 'with air or oxidized by iron-oxide, preferably in the presence of a base such as lime, to produce a workable slag; in the latter case the ferrochromium, which may be saturated with carbon or contain carbon and silicon to facilitate grinding, is ground and roasted at above 1000‹C. if desired, with oxidation promoters' such as lime, baryta, strontia, soda-ash, sodium chlorate, nitrate, or bichromate, manganese-dioxide, chromium trioxide, or potash. In either case, the degree of oxidation may'be controlled to effect the desired carbon-elimination' or the desired ratio of chromous to chromic oxides, and more than one oxidation may be carried out after regrinding, if desired, to a finer comminution than that previously employed and at below 1000‹C. The chromium ratio of the oxidized product may be improved, if desired, by the process of Specification 437,008 to the point, if necessary, of the total exclusion of iron. The product is ground and mixed with the reducing- agent in finely-divided form, or the two materials are ground together; the mixture may be employed for the direct production of iron-alloys or may be added to a steel bath, or to cast-iron, being employed in briquetted or loose form or in bags or metal containers, if desired with the addition of sodium nitrate, bichromate, chlorate, iron oxide, or manganese: dioxide, and a further addition of lime to give, with the silica present or produced during the reaction, a slag having a lime-silica ratio, e.g., 'of approximately 1.5:1. The additional lime may be obtained from a basic slag with which the mixture may be placed in contact. Chromium steels of specific composition, and chromium-nickel steels containing specified amounts of manganese silicon, carbon, aluminium, vanadium, and copper, are referred to.