baber/WOPTO huggingface dataset:
Patent GB-410604-A (GB)
Title: Improvements in hobs for cutting splines and the like
IPC: B23F21/16
Filed: 1933-04-21
Abstract: 410,604. Hobbing splines &c. TRIGGS, W. W., 57, Lincoln's Inn Fields, London.-(Barber-Colman Co. ; River Street, Rochford, Illinois, U.S.A.) April 21, 1933, No. 11733. [Class 83 (iii).] Milling-cutters.-A generating hob particularly for cutting tapered splines in the end of a shaft 17 is provided with a number of longitudinal gashes 14 intersecting one or more threads of constant lead angle, each thread being tapered relative to the hob axis and having a constant width on the pitch line. The hob is preferably triple-threaded as shown and the gashes are substantially perpendicular to the threads 12. The hob teeth 15 are backed off spirally to relieve the cutting edges and may be of any required contour. For forming keys 18 with straight parallel sides, the sides b, c of the hob teeth are of involute form. The threads 12 are tapered from one end to the other of the hob at an angle e the tops d in axial section being inclined at this angle to the hob axis. Clearance lugs 16 of uniform width are provided at the top corners of the teeth, these lugs conforming to the axial taper. Since owing to the taper, the tooth tops increase in width towards the small end of the hob, the clearance lugs lie on helices which diverge towards the small end. In operation, the hob is inclined, Fig. 3, in accordance with the inclination of the threads and if h is the length of the work grooves the projection of the effective hob length on the hob axis is also of length h. The hob and shaft are rotated in timed relation and the hob is fed across the work from the full line to the dotted position in Fig. 3. During the cutting, the clearance lugs cut out clearance grooves 20 adjacent the bases 19 of the tapering grooves, formed by the tops of the hob teeth, thus leaving corner edges g and enabling the projections on the complementary member of the coupling (not shown) to be firmly seated on the roots f. Specification 410,603 is referred to.
Patent GB-855971-A (GB)
Title: Improved apparatus for clearing snow
IPC: E01H5/10
Filed: 1958-04-15
Abstract: 855,971. Snow melting apparatus. KENNY, J. P. April 14, 1959 [April 15, 1958], No. 11897/58. Class 107 In snow clearing apparatus comprising a casing 1 mounted on wheels 22 and propelled by the vehicle 23, the snow is scooped up by the ramp 4 and fed into the casing by the rotating paddle 12 where it is melted by hot gases emerging from the ducts 21 connected to the combustion chamber 20. Liquid fuel and compressed air for the combustion chamber burners 18 are supplied from the rear compartment 7 which contains fuel tank 8, engine 9, compressor 10 and water pump 11. The water resulting from the melting of the snow drains via the perforated floor 5 to water outlets 3 and a part of this water is recirculated via the water pump to the sprinkler system 17. Alternatively the casing can be carried on a fork-lift truck (Fig. 2).
Patent GB-145218-A (GB)
Title: Improvements relating to pillow cases, cushion covers, and the like
IPC: A47G9/02
Filed: 1919-05-13
Abstract: 145,218. Brookfield Linen Co., and Macauley, T. H. May 13, 1919. Pillow slips and the like.-A pillow cover or the like a is provided with two extended flaps a<1>, a<2>, the under flap a<2> being turned in over the pillow d and secured to the top of the cover or to the flap a<1> by a cord or ribbon c.
Patent GB-542706-A (GB)
Title: Improvements relating to acetylene generators
IPC: C10H15/06
Filed: 1940-07-22
Abstract: 542,706. Apparatus for generating acetylene. KIMBER, H., and OGDEN, A. L. July 22, 1940, No. 11993. [Class 2 (i)] In an apparatus for generating acetylene local heating at the point of generation is avoided by the circulation of water through a pipe at or near the point of heat generation. In Fig. 2 the generator 1 surmounted by conical top 2 has a hopper 3 containing the carbide in a finely powdered form. The outlet 7 of the hopper is surrounded by shields 8 and 11 to protect the valve of the hopper from corrosion. A cylindrical member 13 which extends downwards from the conical portion 2 is open at the bottom. Secured to this cylindrical member 13 is a pipe 14 communicating from the inside of the cylinder below the water level to the outside thereof above the water level. In operation the gas generated by the inter-action of the powdered carbide and the water forces the water inside the cylindrical member 13 downwards. The evolution of gas is accompanied by frothing and when the level is depressed to that of the pipe 14, water and gas will pass up the said pipe and so induce a circulation.
Patent GB-630630-A (GB)
Title: Improvements in or relating to regenerative heat exchangers
IPC: F28D19/04
Filed: 1947-05-05
Abstract: 630,630. Heat-exchangers. PEREGRINE, E. P., and PARSONS & MARINE ENGINEERING TURBINE RESEARCH & DEVELOPMENT ASSOCIATION. May 5, 1947, No. 12040. [Class 64(i)] A regenerator for the exchange of heat between two fluids comprises two adjacent ducts a, b formed in separate casing members, spaced apart from each other, a rotor i disposed between the ducts and carrying a plurality of discs h, two segments of each disc extending respectively one into each of the two ducts so that on rotation of the rotor, heat is absorbed by the segments in one duct and simultaneously given up by the segments in the other duct. The casing members a, b are secured to each other by bolts or clamps d engaging on flanges c to which are attached, by mechanical means, e.g., interlocking or welding, bridge members j, of H section disposed with the normally vertical limbs of the section at right angles to the plane of the discs. Rubbing members are inserted between the said limbs of the H section and are maintained in contact with the discs by fluid pressure, e.g., the higher of the two fluid pressures obtaining in the ducts. The two fluids flow through their respective ducts in counterflow, preferably in directions opposite to the rotation of the adjacent disc segments. The diameters of-the discs may increase progressively towards the plane containing the central disc. Specification 231,192, [Class 51(i)], is referred to.
Patent GB-624499-A (GB)
Title: Bulldozer
IPC: E02F3/815
Filed: 1947-05-05
Abstract: 624,499. Earth excavators. CATERPILLAR TRACTOR CO. May 5, 1947, No. 12110. Convention date, May 31, 1946. [Class 68 (i)] When in use the operating depth of the cutting edge of a bulldozer blade is maintained constant by a trailing pivoted shoe 18 which rests on the prepared ground. The angle the shoe makes with the blade determines whether the blade penetrates into the soil in a downward, upward or level direction and in normal use is such that the shoe is horizontal. This angle is regulated by remotely-controlled hydraulic rams pivotally connected between the shoe and brackets 22 on the back of the blade. The flat ground-engaging portion of the shoe extends the whole width of the blade. The rear of the shoe is curved upwards and the space so enclosed between the blade and the shoe is prevented from entrapping earth by a screen 27, the flexible edge 28 of which engages the upturned flange 26 of the shoe. The Specification as open to inspection under Sect. 91 comprises also a series of narrow shoes or a shoe of a lesser width than the blade. This subject-matter does not appear in the Specification as accepted.
Patent GB-558500-A (GB)
Title: Self retaining spring cotter pin
IPC: F16B39/04
Filed: 1942-08-28
Abstract: 558,500. Cotters. WASSELL, R. W., and RIDER, T. R. Aug. 28, 1942, No. 12114. [Class 89 (ii)] Cotter pins are made from resilient material bent up into circular form with an open seam A so that on insertion they grip the walls of the hole tightly and they are formed at one or both ends with a spring lip B that engages the side of the bolt &c. and renders the pin self-retaining. On depression of the lip by a tool the pin may be withdrawn without damage in a condition suitable for re-use. The pins may have a head at one end and be formed from solid material or of half-round material in solid or hollow form. Hollow pins bent up from sheet metal may have the spring lips formed on one side of the pin and bent up to protrude through holes in the other. The upper portion of the spring lips may be knurled at C to afford a grip when depressing the lips to extract the pins
Patent GB-542767-A (GB)
Title: Improvements in or relating to fluid-operated work pressing means
IPC: A43D35/00
Filed: 1940-07-25
Abstract: 542,767. Hydraulic presses. BRITISH UNITED SHOE MACHINERY CO., Ltd. (United Shoe Machinery Corporation). July 25, 1940, No. 12129. [Class 69 (ii)] [Also in Group V] A fluid-operated press has a quick-advance small area piston combined with a high final pressure large area piston. The system is shown applied to a double-headed work-pressing machine having stationary lower press anvils and moving upper presses carried by arms 14 pivoted each to a head 18 on a piston rod 20 carrying a small piston 22 and a large piston 30. A spring-pressed valve 42, 52, 48 is exposed on descent of the piston 22 to the fluid pressure above said piston, and is thus forced back to allow the fluid to enter the space between the pistons by way of a port 44. The valve head 50 does not quite reach the wall face of the cylinder 24, and a disc 52 behind it fills the valve chamber 40 when valve is open to prevent escape of fluid to reservoir 38. The pistons and upper press may be raised by a manually operated valve introducing pressure fluid beneath the piston 30, and in rising the fluid above piston 30 passes by way of port 44 and hollow part 42 of the valve to a duct 36 leading into the reservoir 38. Alternatively the two heads may be made to function alternately by operating a control valve 84 by a handle 94, and automatic locking of the handle 94 in two extreme positions may be effected by spring catches releasable each by a handle which has to be moved prior to the actuation of and held during the initial movement of the handle 94. The heads 18 are further connected to the ends of a rocking lever 103. Fluid pressure is obtained by a pump 74 rotated by a power pulley 70 and forcing the fluid by way of pipe 78 and valve 84 to piston and cylinder units in turn. The valve 84 has counter-ports cut in the rotary part to balance the fluid pressure and prevent selfactuation.
Patent GB-1139722-A (GB)
Title: Instrumentation of nuclear reactors
Inventor: DALE WALTER BERNARD
IPC: G21C17/10
Filed: 1965-03-23
Abstract: 1,139,722. Reactors. UNITED KINGDOM ATOMIC ENERGY AUTHORITY. 22 March, 1966 [23 March, 1965; 9 April, 1965], Nos. 12163/65 and 12487/66. Heading G6C. [Also in Division H2] Each housing part of a two-part connector, used to make connections to temperaturemeasuring thermocouples in a graphite moderated nuclear reactor, has a number of passages 34 through which a clean inert gas or reactor coolant gas, is swept so as to pass over all exposed insulation surfaces to keep such surfaces clean. The gas may be supplied from outside the reactor and deflectors may be incorporated within the coupling for directing the gas flow. The interconnecting male and female contacts 29 of the two parts are axially spaced.
Patent GB-527891-A (GB)
Title: Improvements in accordions
IPC: G10D11/00
Filed: 1939-04-22
Abstract: 527,891. Accordions. ANELLI, G. April 22, 1939, Nos. 12190 and 12191. Convention dates, April 23, 1938 and Oct. 26, 1938. [Class 88 (ii)] An accordion in which the bellows is joined to the framework so as to be in direct contact with the valve board without the interposition of a sound box and the reeds are in the body of the bellows itself has a resonance chamber containing a double reed formed laterally of the action chamber by resonance diaphragms. The bellows 5 is secured to the frame 8 of the valve board 3 and the upper reeds 4 are arranged directly within the bellows. The bass reeds 6 are arranged horizontally, the action chamber 9 being reduced in size and divided from the bellows chamber by resonant diaphragms 7, 7<SP>1</SP>, 7<SP>11</SP>. The external contours are all curved. Fig. 3 shows bass reeds 3, 4 arranged horizontally on the sides of a central channel 2 mounted on a single diaphragm 1 and in another modification some of the reeds rest on the diaphragm itself. In another form some of the base reeds are arranged horizontally and others vertically.
Patent GB-143385-A (GB)
Title: Improvements in convertible bicycles
IPC: B62K13/00
Filed: 1919-05-15
Abstract: 143,385. Williams, R. M. May 15, 1919. Convertible cycles.- A bicycle, having a removable top ba.r a adapted to be secured in either an inclined or horizontal position, and in which the bar is furnished with reduced ends b adapted to engage and be locked in recesses d in the fixed framing, is provided with spring-controlled bolts o housed in tubular bosses e and adapted to engage holes in the ends b, knobs n being provided to facilitate the withdrawal and retention of the bolts against the action of springs p.
Patent GB-139366-A (GB)
Title: Improvements in machines for grinding pins, rollers, tubes and the like
IPC: B24B19/00
Filed: 1919-08-30
Abstract: 139,366. Coventry Chain Co., and Dudgeon, H. A. Aug. 30, 1919. Rollers, spindles, rods, tubes, and the like, treating.-In a machine for grinding the peripheries of pins, rollers, tubes, &c., in which the rollers &c. are fed freely in a guide-channel across the flat face of a grinding-wheel that rotates the rollers and exerts a draw on these to give the axial feed, the feed path is adjustable, either angularly or in parallel lines, in order to vary the rate and direction of feed. In the construction shown in Fig. 2, the rollers V are guided in a channel F formed by plates G, H mounted on a carrier D, which is adapted to be adjusted angularly, by means of hand-operated worm-gearing E<2>, to give the required inclination to the feed-path; the carrier is mounted on a saddle B adjustable towards and from the grinding- wheel Z through gearing C<3> and a screwed spindle C<4> by means of a hand-wheel C. In the modification shown in Fig. 3, the feed path X-X is on one side of the diameter W of the grinding- wheel Z, adjustment in this case being made by moving the carrier vertically to move the feed path in parallel lines. The rollers are fed to the guide from a hopper.
Patent GB-1365751-A (GB)
Title: Image pick up devices
IPC: G11C19/28
Filed: 1972-03-16
Abstract: 1365751 Semi-conductor imaging device WESTERN ELECTRIC CO Inc 16 March 1972 [16 March 1971] 12242/72 Heading H1K Also in Division H4] First and second arrays of electrodes are provided adjacent to but insulated from the surface of a charge storage medium. An optical image is projected on the medium underlying the first array while the medium under the second array is shielded from radiation, means being provided for collecting beneath electrodes of the first array charges generated by the image, for transferring these charges to beneath the second array and for reading-out the charges stored under the second array. One column of the array shown in plan in Fig. 2 is seen in Fig. 1A. Every third electrode in each column is connected to a different clock pulse line. In the first phase of operation a pulse on line A 2  causes holes generated by the image to collect in packets in the N-type silicon beneath electrodes 13a, 13b. Then switches 18-20 are closed and clock pulses applied sequentially to lines A 1 -A 3  to rapidly transfer the charge packets beneath electrodes of the storage and read-out array, i.e. those above light-stop 17. After reopening switches 18-20 and with a pulse on line A 2  pulses are sequentially applied to lines B 1 -B 3  with switch 21 closed to transfer charge packets to beneath electrode 15. When the first packet from each column has reached its electrode 15 pulses are sequentially applied to electrodes 15 and those between them to transfer the packets to a-diffused P region 23 (Fig. 2) where they are detected, after which the second packets are brought under electrodes 15 and transferred to the detector region. The whole process is then repeated. A line imaging device is similar save that there is only one electrode in each column of the sensing and storage arrays. Where there are a large number of rows there may be a number of detector regions spaced along the row of electrodes 15, the output from which can be appropriately combined. To prevent charge coupling between adjacent columns an N+ diffused region may be provided between and around them. Alternatively a metal strip 24 (Fig. 2) maintained at a negative potential is disposed on the oxide insulation between them. Recombination of charge carriers trapped at the silicon-oxide interface is reduced by applying to all electrodes a fixed bias on which the pulses are superimposed. The device may alternatively be designed for two or four phase operation as described in Specification 1,340,620.
Patent GB-553200-A (GB)
Title: Improvements in or relating to methods of effecting the evaporation of water or other liquids
IPC: B01D1/00
Filed: 1941-09-23
Abstract: 553,200. Evaporating liquids. REAVELL, J. A. Sept. 23, 1941, No. 12279. [Class 39 (iii)] Evaporation of water or other liquid in bulk is effected by means of infra red radiation of wave lengths between 10,000 and 50,000 Angstrom units. The liquid container is translucent to infra red radiation. The method is applicable to heat-sensitive liquids such as blood or solutions of vitamins and enzymes such as diastase or rennet which would be affected by a high contact temperature of the wall of the vessel. The radiation generator may employ tungsten or carbon filament lamps operated at reduced temperatures, or ceramic rods wound with "Nichrome" (Registered Trade Mark) or platinum wire. The container wall may be of glass, e.g. that described in Specification 496,508, [Group XXIII], or fused silica, according to the wave-length employed. Reference has been directed by the Comptroller to Specification 12075/12, [Class 39 (iii)].
Patent GB-801748-A (GB)
Title: Improvements in or relating to breathing apparatus and pressure control valves therefor
Inventor: BASHAM EDGAR WILLIAM JAMES
IPC: A62B9/02
Filed: 1956-04-24
Abstract: 801,748. Respiratory appliances. NORMALAIR, Ltd. April 15, 1957 [April 24, 1956], No. 12465/56. Class 81 (2). [Also in Group XXIX] A servo-actuated demand valve for respirators has a main valve member 14 slidable in a cylindrical mounting 8 and normally held against its seating 9 by a spring 33 and by gas pressure from a supply G, passing through a central drilling 15 to a chamber E. This chamber is normally closed by a ball 19 engaging a resilient seating 17. When the valve is to be opened, pressure on this ball, by a rod 20, is released by a pressure sensitive diaphragm, the contained pressure in chamber E is exhausted through orifices 6 and the valve 14 is lifted off its seat 9 to allow gas to pass through ports 3, 4 to the face mask.
Patent GB-327593-A (GB)
Title: Improvements in or relating to means for separating foreign matter from cotton fibres
IPC: D01G9/00
Filed: 1929-04-22
Abstract: 327,593. Brennen, J. B. April 22, 1929. Openers, cleaners, etc.; feeding openers &c. - In an arrangement for cleaning cotton comprising a cleaner and a trunk system leading to a collecting cage, the material is ejected from the cleaner into the lower end of a vertically arranged casing 1, having an air inlet 3 at the bottom and an adjustable plate 2 to regulate the size of the passage through the casing. The plate 2 is hinged at the top and held by an arm 5 engaging a cross-piece 6. The upper end of the casing leads to the trunk. The discharge shoot 12 of the cleaner extends downwardly from the cleaner cylinder and the heavier particles of dirt &c. are discharged into the casing below the cotton fibre. The air current carries away the cotton through the casing to the trunk and the dirt falls to the bottom. Opposite the discharge shoot 12 the plate 2 is furnished with a grid 8 through which small particles of dirt pass into a box 9 having a weighted bottom 10, which opens when sufficient dirt &c. has accumulated and discharges it into the bottom of the casing.
Patent GB-126976-A (GB)
Title: Means for Tight Jointing the Piston Rings for Internal Combustion Engines.
Inventor: BILLON MARCEL
IPC: F16J9/06
Filed: 1919-05-17
Abstract: 126,976. Billon, M. and Dufay, F. Jan. 19, 1918, [Convention date]. Piston packing.-In a revolving-cylinder interna'-combustion engine, contraction of the packing-ring b, Fig. 1,. when the side thrust of the piston is varied or reversed, is prevented by the action of the centrifugal force on an inner bevelled ring a which bears on the bevelled inner periphery of the ring b. The ring b may be of castiron and the ring a of steel. The Specification as open to inspection under Sect. 91 (3) (a) comprises also the following subject-matter: The ends of a packing-ring are formed with conical engaging surfaces and both ends bear against the cylinder and against the side of the packing-ring groove against which the packing-ring is pressed normally. In the form shown in Fig. 5 (Cancelled), one end of the ring is cut away to form an inclined tongue g<1>, and the other end has a corresponding inclined slot h<1>. The surfaces i<1> and k of the two ends bear against the cylinder, and the surfaces j and l against the packing-ring groove. In a modification, one end of the ring has a triangular tongue. and the other end a triangular recess. This subject-matter does not appear in the Specification as accepted.
Patent GB-179428-A (GB)
Title: Improvements in water turbines
IPC: F03B1/00
Filed: 1921-05-02
Abstract: 179,428. Neumann, S. May 2, 1921. Clutches, claw.-Driving connections between turbine wheels 19, 20, 21 and their hollow shaft 2 comprise clutches, Fig. 6, which can easily be released during running. Blocks 33 are attached to spring-pressed levers 34 which are pivoted to a rod 32 passing through the shaft 2. The blocks 33 normally engage recesses 40 in the wheel bearings and lock the wheels to the shaft. On moving the rod 32 to the right, the levers are pressed down by the action of projections 37, 38 on the levers and the shaft, and disengage the wheel from the shaft.
Patent GB-1144322-A (GB)
Title: Improvements relating to fuel cells
IPC: H01M12/04
Filed: 1966-03-22
Abstract: 1,144,322. Fuel cells. ELECTRIC STORAGE BATTERY CO. 22 March, 1966 [22 March. 1965], No. 12534/66. Heading H1B. In a fuel cell the electrodes are arranged in the upper part of a reservoir of electrolyte containing or in a space communicating therewith and not below the level thereof and the fuel reacts to form a product which further reacts with electrolyte to form a product which is denser than the electrolyte; the downward diffusion of the denser reaction product under gravity serves to displace electrolyte rich in fuel upwards towards the electrolyte. As shown in Fig. 1, the fuel cell 11 has a navigation light 10 mounted thereon and powered thereby via a converter. The reservoir 13 contains a fuel (methanol) dissolved in a KOH solution and in its upper part the fuel cell comprising hollow nickel/silver cathodes and silver/palladium sheet anodes separated by polythene netting. CO 2  produced by oxidation of the methanol reacts with KOH to form K 2 C0 3  which gravitates to the bottom of the reservoir displacing fuel rich electrolyte to the top. External carbonation of the electrolyte is prevented by a layer of mineral oil 23. Control 18 periodically vents the cathodes through vent 22.