baber/WOPTO huggingface dataset:
Patent GB-562722-A (GB)
Title: An improved sprocket adaptor for chain driven vehicles and other purposes
IPC: B62M9/10
Filed: 1943-03-09
Abstract: 562,722. Chain-wheels. DAVIES, E. C., HUGH, P. G., NORTH, O. D., and SCAMMELL LORRIES, Ltd. March 9, 1943, No. 3794. [Class 80 (i)] A sprocket wheel 3 adapted to be fitted over an existing sprocket wheel 2, for changing the gear ratio, particularly for chain driven transport vehicles, has an internal web 7 provided with semi-circular grooves 8 equal in number to the spaces between the teeth of the sprocket 2. The drive is transmitted between the two sprockets by cylindrical pins 10 located in the grooves 8 and between the teeth 5 'of the sprocket 2, the pins 10 being held in place by a plate 12 fixed to the sprocket 2.
Patent GB-859418-A (GB)
Title: Improvements in or relating to a grinding apparatus
IPC: B24B47/06
Filed: 1958-02-06
Abstract: 859,418. Grinding. KAKIUCHI, S. Feb. 6, 1958, No. 3846/58. Class 60. [Also in Group XXIX] A grinding machine comprises a head 1 reciprocated by fluid pressure means 15, 16 and carrying a grinding wheel 2, a workpiece holder 4 rotated by a fluid pressure motor 19, fluid pressure means 21, 22 for vertically moving the holder, a valve 28 for controlling the direction of flow of fluid to the means 15, 16 for moving the head in opposite directions, and means 10, 11 operable by the movement of the head for varying the flow of fluid to the means 15, 16 and motor 19 for modifying the rate of movement of the head, 1 and the speed of rotation of the holder 4, whereby the wheel grinds all portions of the workpiece equally. The grinding wheel -is driven by a motor 3 and is disposed with its axis parallel to the direction of reciprocation of the head 1. During reciprocation, a cam 6 on the lower surface of the head axially displaces a rod 8 which is urged against the cam by a spring 9 and has racks engaging gears 12, 13 of valves 10, 11 arranged to vary the flow of fluid to the piston- and-cylinder device 15, 16 for reciprocating the head and the motor 19 which rotates the holder 4 by means of a wheel 18 in toothed or friction engagement with the holder ; the arrangement is such that the speed of the head is increased and the speed of rotation of the holder decreased as the head is moved towards the holder and vice versa. At each reversal of the grinding head, the valve 28 is operated manually or automatically by an element contacted by the head to supply fluid pressure to alternate ends of the device 15, 16 and the piston-and-cylinder device 21, 22 which, by means of gearing and a pawl-and-ratchet mechanism 20, 23, raises the holder 4. The workpiece is secured to the holder by an electro-magnetic chuck or the like. Each valve 10, 11 comprises a cylindrical body 41, Fig. 2, in which is a cylinder 42, axially adjustable by means of a threaded rod 44 and knob 46, and a cylinder 43 rotatable by the gear 12 or 13. The outer cylinder 41 has internal grooves 47, 48 which are connected to pipes 25, 251 and cooperate with openings 49, 51 in the cylinder 42 and openings 50, 52 in the cylinder 43. The flow of fluid to the device 15, 16 and motor 19 from the valves 10, 11 can thus be controlled by the degree of overlap of the openings 49, 50 and 51, 52 depending on the axial position of the cylinder 42 and the angular position of the cylinder 43.
Patent GB-747706-A (GB)
Title: Improvements in or relating to regenerators for use in hot-gas reciprocating enginesand in refrigerators and heat pumps operating on the reversed hot-gas engine principle
IPC: F02G1/057
Filed: 1954-02-09
Abstract: 747,706. Making thermal regenerators. NAAMLOOZE VENNOOTSCHAP PHILIPS' GLOEILAMPENFABRIEKEN. Feb. 9, 1954 [Feb. 12, 1953]; No. 3861/54. Classes 83 (2) and 83 (4). [Also in Group XIII] A homogeneous felt-like mass of short pieces of fine metal wire, used as the filling of a thermal regenerator (see Group XIII), is formed by distributing the wire pieces in a random manner in a chamber 22 to build up a layer of uniform thickness on the base 23 of the chamber, and compressing the layer in the direction of gas flow therethrough until a required filling factor of 3 to 30 per cent is achieved. The chamber 22 has a cross-section of the size and shape required for the regenerator filling. A continuous length of wire fed through a passage 42 by an air current from a fan 49 is cut into short lengths by blades 34 carried by a rotor 33. An air current from'the fan 49 carries the wire pieces through a pipe 30 into the chamber 22, and escapes through holes in the base 23, leaving the wire pieces deposited. The chamber 22 is rotated about a vertical axis. Air from the compressor 49 also flows through a branch 43 to feed the wire through the passage 42. The wire pieces may be secured together by sintering. Alternatively, they may be coated with metal and heated to adhere together.
Patent GB-1426074-A (GB)
Title: Potentiometer
IPC: H01C10/06
Filed: 1973-01-25
Abstract: 1426074 Potentiometers BUNKER RAMO CORP 25 Jan 1973 [25 Jan 1972] 3862/73 Heading HIS A potentiometer comprises a rotatable and axially movable shaft 5 mounted coaxially with a helical resistor element 1 having end terminals 3, 4, the shaft carrying sliding spring contacts 7, 7<SP>1</SP> which are connected to each other and to a terminal 13 via a slider track (9, Fig. 2, not shown) on the shaft 5. Several tracks (9) may be provided so that electrical contact can be made at one of a plurality of circumferentially spaced positions by each contact 7, 7<SP>1</SP>. Alternatively contacts having different lengths may be used. The axial and circumferential separations between the contacts 7, 7<SP>1</SP> are adjusted by removing the shaft 5 from the housing 2. Reference has been directed by the Comptroller to Specification 1,243,597.
Patent GB-229313-A (GB)
Title: Improvements relating to internal combustion engines with airless injection
IPC: F02B3/00
Filed: 1925-02-11
Abstract: 229,313. Motorenfabrik Deutz Akt.- Ges. Feb. 11, 1924, [Convention date]. Drawings to Specification. Regulating.-In engines working with liquidfuel injection, too high an ignition pressure is prevented, when working with supercharging, by causing the injection to occur later or at less speed as the amount of supercharging is increased. When the speed of the injection is varied, the time of commencement is kept the same and the duration altered.
Patent GB-944029-A (GB)
Title: An improved lifting machine
Inventor: SMALLPIECE COSBY DONALD PHILIP
IPC: B66F9/04
Filed: 1961-02-02
Abstract: 944,029. Masked lift trucks. MARTONAIR Ltd. Jan. 31, 1962 [Feb. 2, 1961], No. 3923/61. Heading B8H. The tubular mast 2 of a lift truck is formed with channel portions 3, which guide the rollers 6 of the lifting carriage, and is provided with a front plate 15. The carriage comprises side members 4 which are interconnected by upper and lower axles 5 supporting the rollers 6 and hook members 20, secured to brackets 21 on the L-section fork arms 18, pass through slots 14 in the mast and are engaged over the upper axle 5. The carriage is raised by a cable 7 which extends from an anchorage 9 in the mast, over a pulley on the piston-rod 11 of a pneumatic ram 12 and is secured to the lower axle 5. The track is mounted on casters and is provided with a pivoted towing handle 26. In modifications (not shown), the pneumatic ram is replaced by other fluid pressure or electric means, and the fork arms are replaced by, or support, a platform.
Patent GB-889574-A (GB)
Title: Improvements in or relating to asbestos products
Inventor: FEIGLEY DAVID ALEXANDER
IPC: C04B26/04
Filed: 1960-02-04
Abstract: In the preparation of coloured, or fluorescent, rubber-bonded asbestos sheets &c., a slurry of chrysotile asbestos fibres in water is treated with a water-soluble azo dye, phthalocyanine dye, a neutral dye or a stilbene-, or a thiazolefluorescent brightening agent, or a mixture thereof reacting with the fibre-surfaces to facilitate even deposition of synthetic rubber latex thereon.ALSO:In the production of coloured, or fluorescent, rubber-bonded asbestos sheets, &c., a slurry of chrysotile asbestos fibres in water is treated with a water-soluble azo dye, phthalocyanine dye, a neutral dye, or a stilbene- or a thiazole-fluorescent brightening agent or a mixture thereof reacting with the fibre-surfaces, to facilitate even deposition of synthetic rubber latex thereon.
Patent GB-554150-A (GB)
Title: Improvements relating to jigs
IPC: B23Q3/08
Filed: 1942-03-28
Abstract: 554,150. Drilling-jigs. BENTON & STONE, Ltd., and MILNER, C. E. March 28, 1942, No. 4144. [Class 83 (iii)] A drilling jig has its parts for securing and releasing the work actuated by a number of pneumatic cylinders, one of which actuates a hold-down lever which provides a guide for the drill. In one form the work a consisting of a brush-holder for a dynamo or motor is located on a post e and is urged in one direction against a block e<SP>2</SP> by a pneumatic cylinder and in a perpendicular direction by a second cylinder j<SP>1</SP>. A third cylinder j<SP>2</SP>, pivoted to the base d, operates a lever r having an arm s which urges the work downwardly, this arm having a hole which serves as a drill guide. The cylinders are controlled by valves (not shown). The cylinders may be replaced by chambers containing diaphragms.
Patent GB-1040381-A (GB)
Title: Improvements in or relating to safeguarding television or other glass cathode-ray tubes against implosion
IPC: H01J29/87
Filed: 1964-01-31
Abstract: In a method of safe-guarding cathode-ray tubes against the risk of implosion, a sheath of resilient material is adhered to the conical portion of the glass envelope.  The sheath may be of latex, plasticized polyvinyl chloride, or foamed polyurethane, and may be applied by spraying, dipping or running on a colloidal suspension of the resin on to the tube envelope while it is being rotated, the neck and screen portions of the tube being masked, Fig. 1 (not shown).
Patent GB-1090237-A (GB)
Title: Improvements in or relating to tube joints
IPC: F16L23/028
Filed: 1963-02-01
Abstract: 1,090,237. Jointing by tube expanding and by forging. J. H. MILLAR. April 30, 1964 [Feb. 1, 1963], No. 4267/63. Headings B3A. B3H and B3J. [Also in Division F2] A method of securing a ferrule having internal annular grooves 8 to a tube 2 comprises inserting a sleeve 6 of ductile material into the tube and expanding the sleeve and the tube into the grooves 8. The tube may be of aluminium or aluminium alloy, or form the end of a stainlesssteel corrugated bellows, the ferrule being of aluminium or stainless-steel; the sleeve-metal is not stated. A tapered section 14 is formed at one end of the ferrule and a shoulder 10 at the other for engagement by the sleeve and/or tube. The sleeve and tube are expanded by frusto-conioal rolls, as described in Specification 692,571.
Patent GB-167512-A (GB)
Title: Improvements in drying chambers
IPC: F26B17/04
Filed: 1920-02-12
Abstract: 167,512. Hislop, R. T. Feb. 12, 1920. Drying-furnaces; air-heating furnaces.-A furnace for drying road metal &c. comprises a chamber a having at one end a fire-box b to which air under pressure is delivered for combustion through openings c below the fire-bars, and for diluting and reducing the temperature of the combustion products through openings d above the fuel, the chamber having an opening k in the roof at the opposite end to the fire-box for taking off moisture-laden gases. The metal is delivered to the convever h by a hopper j, or alternatively a hopper j<1> with two spouts, may be used. The conveyer h discharges into a pipe f, or the dried material may be removed by another conveyer.
Patent GB-483685-A (GB)
Title: Improvements in, and relating to, implements for road or garden use
IPC: A01B1/22
Filed: 1937-02-13
Abstract: 483,685. Rake &c. handle fixings. STRATFORD, F. Feb. 13, 1937, No. 4392. [Class 61 (i)] Rakes, hoes, scrapers, or other bladed tools for road or garden use are interchangeably secured to a handle by a member having a socket &c. a to receive the handle and a front clamping face c provided with forwardly projecting screws e adapted to engage open ended slots k in the blade j which is secured by wing nuts g non-removably accommodated on the screws by riveting over the ends, the clamping face c having also a peg h engaging a hole m in the blade and an overhanging lip d abutting the top edge of the blade.
Patent GB-588486-A (GB)
Title: Fairleads for cables, ropes and the like
IPC: F16H7/18
Filed: 1945-02-21
Abstract: 588,486. Fairleads. PORT COLBORNE IRON WORKS, Ltd., and MAGEE, E. B. Feb. 21, 1945, No. 4409. [A Specification was laid open to inspection under Sect. 91 of the Acts, Aug. 22, 1945] [Class 78(v)] In fairleads of the kind in which a pair of sheaves 40, 41 forming a guide for the rope are mounted in a housing 17 which is rotatable axially in a casing 16 a space 29 for lubricant is provided between the housing and casing. Lubricant is fed to the pocket through an aperture closed by a plug 30 and is retained by shoulders 27, 28 formed on the housing. A detachable ring 25 retains the housing in the casing. Each sheave is mounted on a shaft 39, Fig. 4, provided with an arm 43 which is bolted to a member 34 extending across the housing. Lubricant is fed to the channel 48 through a lateral opening 47 which communicates with an axial bore 46. The rope passes between the member 34 and a similar member 35 and is guided by curved members 50, 51.
Patent GB-275875-A (GB)
Title: Improvements in or relating to internal screw-thread gauges
IPC: G01B3/48
Filed: 1927-02-17
Abstract: 275,875. Fecke, A., and Hannoversche Maschinenbau-Akt.-Ges. vorm. G. Egestorff. Feb. 17, 1927. Drawings to Specification. Outline gauges.-A gauge set for internal screw threads comprise three tools one of which gauges only the core diameter, another gauges only the apex of the thread, and the third gauges only the flank of the thread. Each tool has stages of increasing diameter.
Patent GB-356644-A (GB)
Title: Improvements in animal-carrying vehicles
IPC: B60P3/04
Filed: 1931-02-12
Abstract: 356,644. Ventilating vehicles. NUGENT, SIR H. C., Windsor House, Lambourn, Berkshire. Feb. 12, 1931, No. 4491. [Class 137.] Animal-carrying vehicles are ventilated by means of a double roof having a spring-controlled shutter s<2> adapted to be actuated by a thermostat. The incoming air enters the double roof at the wind screen and passes into the interior of the vehicle by ports x. Foul air is permitted to escape at the exit z. An observation window s<5> is provided.
Patent GB-264342-A (GB)
Title: Improvements in locks for doors of vehicles
IPC: E05C3/40
Filed: 1926-02-17
Abstract: 264,342. Moulder, G. J. Hay-. Feb. 17,1926. Catches, spring; stud and socket fastenings; striking-plates for locks.-A door catch comprises two pivoted jaws a engaged by springs c and actuated by an intermediate cam b, the jaws being recessed to engage a grooved pin I carried by the frame J. To deaden the noise, the cover plate has a casing p adjusted by a screw r and carrying a rubber ring Q fitting closely on the pin I. The cam b is mounted on a spindle c carrying inner and outer handles d, e<1>. the inner handle d being provided with a distant control f and return spring d<1>.
Patent GB-755601-A (GB)
Title: Separating hafnium from zirconium
Inventor: LISTER BRYAN ALFRED JACK
IPC: C01G25/00
Filed: 1950-02-24
Abstract: Zirconium and hafnium are separated by absorbing salts thereof on a cation exchange material and thereafter eluting the so treated material with 0.8 to 1.2N sulphuric acid whereby the bulk of the zirconium is removed in the initial eluate.  The eluting solution may contain a soluble sulphate such as sodium sulphate. The hafnium remaining may be removed by elution with dilute hydrofluoric or oxalic acid and the cation exchanger may then be treated with a mineral acid such as nitric or sulphuric and the process repeated. According to an example, a cation exchange resin converted to acid form by nitric acid was treated with a hydrochloric, nitric or perchloric acid solution of zirconium oxychloride containing about 2 per cent hafnium.  After the solution had passed through, aqueous normal sulphuric acid was passed through to yield an initial eluate containing 99 per cent of the zirconium which when precipitated as oxide contained less than 0.1 per cent hafnium.  Alternatively the cation exchanger rendered acid with normal sulphuric acid may be charged with a 0.8 to 1.2 normal sulphuric acid solution of the zirconium and hafnium after which sulphuric acid of the same normality may be employed for elution.  Similarly a nitric acid solution of the nitrates may be circulated through the upper of two cation exchanger columns both in acid form until the desired quantity of the metals are absorbed, and thereafter, normal sulphuric acid may be passed downwards through both columns to obtain an initial zirconium-containing eluate having a hafnium content of less than 0.05 per cent.  The absorbed hafnium may be eluted with 0.5 per cent aqueous oxalic acid and the columns thereafter washed and treated with 2 normal nitric acid befor repeating the process.
Patent GB-1413625-A (GB)
Title: System for storing visual image information and playing back  the stored image information
IPC: H04N5/32
Filed: 1973-01-31
Abstract: 1413625 Television ILLOCHROMA 31 Jan 1973 [31 Jan 1972 24 Jan 1973] 4806/73 Heading H4F A television system in which selected frames (or fields) of the video signal from a television camera are recorded on a magnetic tape by means of a rotating head assembly, wherein each selected frame is recorded after the tape has been advanced by one step by means of a step motor, the frame thus recorded with or without previously recorded frames then being played back and displayed on a monitor during periods when selected frames are not being recorded. In a first embodiment the multicolour printing of labels on a continuously moving web 1, Fig. 1, is monitored by stroboscopically illuninating periodically occurring labels by exciting lamp D in synchronism with the printing roller (Fig. 2, not shown) and with the television camera 4 frame scan sync. under the control of unit E, the video signal from each selected frame being magnetically recorded in unit B and subsequently repeatedly replayed and displayed on monitor C until the magnetic tape is advanced immediately prior to the recording of the next selected frame, this tape stepping being effected by an input control push-button unit F. In this manner each selected frame may be repeatedly observed immediately after being recorded as well as during recording, and in addition the recordings of all the selected frames are available for further examination. Two embodiments of unit E are described with reference to Figs. 4 and 6, not shown, and two embodiments of the record and playback unit B are described with reference to Figs. 5 and 7, not shown. Instead of manually selecting by unit F the desired frames to be monitored, periodic automatic selection may be effected under control of a clock and an automatic controller (Fig. 8, not shown). In a second embodiment, Fig. 9, not shown, X-ray analysis of a patient is periodically effected and recorded in the above manner for simultaneous repeated and subsequent observation. Instead of X-ray analysis, infra-red analysis may be similarly effected. In a third embodiment animated television shows are produced Fig. 10, not shown, by recording a first image in the video recording and playback device, displaying it on a monitor, drawing the second image on a transparent screen placed over the screen of the monitor during the playback and display of the first image, stepping the magnetic recording tape forward one step, televising and recording the drawn second image, displaying the played back second image on the monitor, and drawing the third image on the transparent screen (the second image having been deleted) &c.
Patent GB-313638-A (GB)
Title: Improvements in or relating to electric heat storage stoves
IPC: F24C15/34
Filed: 1928-02-16
Abstract: 313,638. Kirkwood, J. C. P. Feb. 16, 1928. Resistance ovens ; electric hotplates ; heating by electricity.- In a stove provided with a heatinsulated tank 1 fitted with electric heating elements 2 and containing liquid having a high boiling point, the liquid circulates by convection to and from a plurality of independent heatutilizing units, independently operable means being provided for regulating the circulation through each unit. The heating elements are enclosed in a hood 3 perforated at the bottom and open at the top. The circulating liquid is a mineral lubricating oil with a flash point above 500‹ F. The heat-utilizing units comprise hotplates 18, an oven 7, and a water heater 30. Baffle plates 25 subdivide the interiors of the hot-plates. and valves 22 are fitted on the inlet sides. A number of tubes 8 arranged in the oven are Coupled to the tank by pipes 6, 9, a valve 20 being arranged on the inlet pipe 6. In the water heater, the oil flows through concentric tubes 14, 15 under the control of a valve 21. A pipe 39, for the purpose of preventing an air-trap, is fitted to the tube 15, and is lead-sealed, after the oil system is filled. The tube 15 is surrounded by a shell 32 open at the top and perforated at the bottom. The water heater is coupled to a hotwater storage tank and is provided with a pipe 35 for the outlet of steam and from which hot water may be tapped by means of a valve 37. Fig. 5 shows a controlling valve comprising a butterfly valve 44 on a spindle 45 fitted with an iron core 46 arranged in a copper casing 47 and operated by a permanent magnet 52 mounted on a spindle 50. An electromagnet may be used instead of a permanent one. Electric heating elements may be fitted in the inlet pipe of each heat utilising unit. All the heating elements in the stove may be of the bare-wire type. Thermostats or fusible plugs may be fitted to control the main heating elements.