baber/WOPTO huggingface dataset:
Patent GB-711621-A (GB)
Title: Process of making tetraalkyl dithiopyrophosphates
IPC: C07F9/165
Filed: 1951-10-01
Abstract: A process of making tetraalkyl dithiopyrophosphates comprises heating an o,o-dialkyl chlorothiophosphate with an alkali metal carbonate as acid binding agent with the addition of water in the presence of pyridine as a catalyst.  The use of elevated tempera-, tures is preferred.  In examples, tetramethyl, tetraethyl- and tetrapropyl dithiopyrophosphates are prepared by heating o,o-dimethyl-o,o-diethyl- and o,o-dibutyl chlorothiophosphates respectively with water and potassium carbonate in the presence of pyridine.
Patent GB-961437-A (GB)
Title: Cassette for radiographic film sheets
IPC: G03B42/04
Filed: 1960-06-30
Abstract: 961,437. X-ray film cassettes. GEVAERT PHOTO-PRODUCTEN N.V. June 30, 1960 [July 3, 1959], No. 22982/60. Heading H5R. An X-ray film cassette has two sections, 6 and 3, hinged together at 2, one of the sections having an inside projection 5 so disposed relative to the hinge that when the cassette is opened, having previously been loaded with an appropriate film, the film is dislodged by being pushed by the projection in the event that it sticks to the other section. As shown, the sections are a base 6 and a lid 3. The lid 3 has two spaced pins 5, or a single centrally placed one. A fixed intensifying screen 7 may be held against the base 6, by means of a groove 13. A further intensifying screen 9 moves with the lid 3, being separated therefrom by a resilient layer 16. The film sheet 8 is thus pressed between the two screens when the cassette is shut. When it is opened, if the film sticks to the screen 7, it is dislodged by the pin 5 pushing against the nearest edge of the film, thus facilitating its extraction. Springs 13 may also be provided, as shown, which tend to push the film away from the base as the cassette opens, and sloping wall portions 14 also guide the film outwards as it is pushed by pins 15. Such cassettes are suitable for automatic loading, using the apparatus described in Specification 939,162. Specifications 961,438 and 961,439 also are referred to.
Patent GB-845311-A (GB)
Title: Improvements relating to venetian blinds
Inventor: TAYLOR WALTER
IPC: E06B9/307
Filed: 1957-07-19
Abstract: 845,311. Window blinds. AVERY & CO. (EST. 1834) Ltd., J. July 17, 1958 [July 19, 1957], No. 23015/57. Class 20(3) A venetian blind designed for the rear window of a motor vehicle is urged to the raised position by a spring roller 14, and is lowered by a cord 17 secured to the bottom bar 12, tilting of the slats being effected by a spring roller 18 about which is wound a ladder tape 11 and an operating cord 21, the roller being so biased as to urge the slats into the open or horizontal position. The slats and bottom bar are of a light alloy.
Patent GB-828818-A (GB)
Title: Improvements in or relating to evaporators
Inventor: FRANKEL ADOLF
IPC: C02F1/06
Filed: 1956-07-26
Abstract: A brine evaporating chamber having an inlet and an outlet for the passage of brine has a temperature level safety device which comprises a U-shaped tube or the equivalent, one leg of which is connected to and extends downwards from the lower part of the chamber, and the other leg of which has an overflow open to atmosphere so that, when the vapour pressure in the chamber reaches a predetermined safety limit, hot brine is automatically discharged from the chamber through the overflow so as to reduce the brine temperature automatically to a level not exceeding the predetermined temperature.  The evaporator chamber is preferably designed to operate under a partial vacuum, in which the atmospheric overflow is located below the normal liquid level in the chamber, the location of the atmospheric overflow relative to the normal liquid level in the chamber being adjustable to compensate for <PICT:0828818/III/1> changes in barometric pressure.  A valve may be provided on the overflow leg of the U-shaped tube to close the chamber to atmosphere during starting up of the evaporator.  In a preferred embodiment, a U-shaped tube 56 has one leg 58 connected to and extending downwards from the lower part of the flash chamber 10, and the other leg 60 opening into an open-topped tank 62 provided with an overflow pipe 64.  The head of water H is equal to the pressure head by which the saturation pressure in the chamber 10 is lower than ambient pressure. Under normal conditions the liquid level in the chamber 10 will be determined by a weir 66 and the overflow device acts purely as a temperature control.
Patent GB-1387601-A (GB)
Title: Production of soap bars
IPC: C11D13/18
Filed: 1972-05-17
Abstract: 1387601 Extruding soap with indicia COLGATE-PALMOLIVE CO 17 May 1972 [27 May 1971] 23138/72 Heading B5A [Also in Division C5] A soap bar, Fig. 6, which is continuously extruded as a base material 43 e.g. white, containing contrastingly coloured indicia material 44, e.g. green, extending continuously within the surface of the bar and in the direction of extrusion 40, is cut transversely of this direction into a plurality of bars, as in Fig. 6, which are then each pressed in the extrusion direction between opposed dies, Fig. 5 (not shown), to produce a soap tablet having the indicia extending between the opposed major faces of the tablet. The base and indicia soap materials are preferably the same soap comprising the salts of saturated long straight chain fatty acids having a C 16  and C 18  carbon chain, and having a moisture content by weight of at least 13À5% so that the materials when subjected to the mechanical working of the extrusion process are each extruded with a beta phase crystal content of above 50%, and preferably 60 to 100% by weight. The indicia material is introduced into the base material in the shape of the indicia from correspondingly shaped outlets 27, 28, Fig. 4, discharging into the extruding stream of the base material upstream of the outlet of the extrusion nozzle 27. The base material is supplied to the nozzle 26 from a screw plodder 11, via a screen 29 and apertured pressure plate 30 and a plurality of tubes 32 passing through a chamber 21 and discharging, at constricted outlets 39, to the nozzle 26, with a portion of the base material passing through a tube 38 for discharge within the indicia material from outlet 28 to produce the required configuration of indicia. The indicia material is supplied to each of the outlets 27, 28 from a screw plodder 12, via a screen 17 and pressure plate 18 and an inlet 19 to the chamber 21 from which tubes 24, 25 lead to the outlets 27, 28. The extrusion may be effected under vacuum, and the apparatus is jacketed as shown for the circulation of heating or cooling fluid, which preferably comprises water for the extruders and chamber 21, and oil for the die intermediate the chamber 21 and nozzle 26, producing extrusion temperatures of 35‹ C. to 55‹ C., preferably 38‹ C. to 45‹ C. Preferred soaps, and plasticizing and hydrotropic additives are specified. The extrusion apparatus may comprise stainless steel, polytetrafluoroethylene, or nylon for parts contacting the soap.
Patent GB-1521815-A (GB)
Title: Process control system
IPC: G05B19/18
Filed: 1976-06-04
Abstract: 1521815 Automatic control YOKOGAWA ELECTRIC WORKS Ltd 4 June 1976 [17 June 1975] 23145/76 Heading G3N A process control system, complying a digital data processing arrangement, incorporates facilities for servicing. As shown, field sensing devices 1, such as thermocouples generate analog signals which, together with contact signals 1', are fed over a line 3 to a signal converter 4. The converter 4 comprises units ACB deriving PWM signals from the analog signals which are manipulated to derive analog control signals for valves 2. Each unit ACB is isolated through a transformer or photo-coupler. The outputs/inputs of units ACB are fed to a digital control device 9 or an editor 6, which is set up to route signals between converter 4 and the device 9 or an analog processing device 10 via a converter unit 12. An alarm device and a trend recorder are incorporated in unit 12. On-off contact signals l'are routed through a digital input board DIB to a memory DGN and used to control on-off valves 2' through a relay board ROB. The device 9 comprises a micro-computer SCU and device 11 a manual/automatic unit MBU/ABU and a maintenance back-up unit PMU operating as a stand-by for the signal converter device 4.
Patent GB-741066-A (GB)
Title: An improved termination for an electric cable of the oil-filled type
Inventor: GLICK DAVID
IPC: H02G15/22
Filed: 1953-08-21
Abstract: 741,066. Cable end-sleeves; couplings. BRITISH INSULATED CALLENDER'S CABLES, Ltd. Aug. 20, 1954 [Aug. 21, 1953], No. 23153/53. Classes 36 and 38 (1). A termination for an oil-filled cable having a central oil-duct 4 in the conductor 2 comprises a rigid insulating tube 30 closed by a metal cap 33 at its upper end through which a terminal member 6 projects, and a connector 7 connected to the conductor 2 and the terminal 6 by one or more flexible conductors 8, the connector supporting one end of a rigid tube 23 which communicates with duct 4 and slidably enters a bore 25 in terminal 6, which bore extends upwards through the terminal and communicates with the interior of tube 30. The wires of the conductor are clamped between a plug 9 and sleeve 11 on to which the connector 7 is screwed, and the exposed parts of the conductor are enclosed in an oil-resisting tape 60. The tube 23 may be screwed into the connector 7 and the threads closed by brazing material 24. The bore 25 of the terminal communicates with the space 45 within the cap 33 through passages 44. To fill the termination with oil, a metal tube 46 is inserted in the terminal 6 so that apertures 47 therein communicate with the bore 25. The lower end of tube 46 comprises a solid plug 48 carrying a sealing ring 49 which seals the end of tube 23. A plug 53 integral with a pipe 54 is inserted in the upper end of terminal 6 and held by a threaded sleeve 55. Oil is fed through pipe 54 to fill the spaces 43, 45 within the termination, after which the pipe 54 and tube 46 are removed and the upper end 26 of the terminal bore is closed by means of a nipple which is held in position by a nut.
Patent GB-1188402-A (GB)
Title: Looms
Inventor: PFARRWALLER ERWIN
IPC: D06C3/06
Filed: 1967-05-18
Abstract: 1,188,402. Loom temples. SULZER BROS. Ltd. 18 May, 1967 [27 May, 1966], No. 23197/ 67. Heading D1E. A loom has a full width temple 16 containing a rod 25 which is rotated to spread the cloth. The rod may be rotated either faster or slower than the speed of the cloth and may have screw threads on its surface to assist spreading. It may be rotated continuously or intermittently.
Patent GB-188826-A (GB)
Title: Improvements in or relating to motor bodies of the coupe type for cars, side cars or the like
IPC: B60J7/14
Filed: 1922-05-30
Abstract: 188,826. Brookes, W. A. May 30, 1922. Hoods. - In a hood for motor-cars, sidecars, &c. and comprising a rigid structure pivoted to the framework of the body so that it can be, swung upwardly to cover the seat or downwardly to lie around the seat and form an open body, and an extension adapted to be fixed to the front windscreen, the extension is hinged directly to the hood and is adapted to fold back on top of the hood to allow it, when lowered, to lie closely around the seat. A rigid hood 4 pivoted to the body at 6 carries an extension 7 pivoted to it at 8 to fold on top of it and formed in two parts hinged together at 10. When the hood is lowered, the extension lies in a pocket formed between the back of the seat 1 and the tail portion 2 of the body, The sides of the tail portion may be extended to a shoulder 5 to extend the pocket around the sides of the seat and a hinged cover 12 be provided for the pocket. Specification 177,453 is referred to.
Patent GB-1465273-A (GB)
Title: Reciprocating engines
IPC: F02B25/04
Filed: 1974-05-14
Abstract: 1465273 Rotary exhaust valves T W ANDREW 14 May 1974 [16 May 1973] 23215/73 Heading F1B A reciprocating piston engine comprises at least one piston operating in a cylinder and has at least one valve-controlled induction port above a top dead centre position of the top face of the piston and has a sole valve-controlled exhaust port located in the cylinder wall with a lower boundary just above the bottom dead centre position of the top face of the piston. Exhaust port 12 is a slot which is inclined to a plane normal to the cylinder axis and the cross-sectional shape of which changes gradually to circular. A two-part valve housing 13, 20 is attached to the cylinder wall and contains a part-spherical valve-member 23 which has a flat on one side and is driven at half-engine speed, so that the exhaust port is connected first to a passage 15, then to passages 15 and 16 and finally to passage 16 only. The engine is a four-stroke mixturecompressing or direct-injection type and has an inlet valve 5. Alternatively the engine may be a hot air engine, Figs. 7, 8 and 9 (not shown) and then has two valves in the cylinder head of which one admits cold air and the other, hot air. A small quantity of fuel may be mixed with the hot air. The space 2 in the engine block is for the circulation of cooling air instead of a liquid coolant.
Patent GB-152324-A (GB)
Title: Improvements in machines for making coffee
IPC: A47J31/16
Filed: 1920-08-09
Abstract: 152,324. Lemoine, J. L. Oct. 4, 1919, [Convention date]. Infusing-machines.-In a coffee-percolator, the height of the water is maintained at a constant level and the rate of percolation adjusted by varying either the head of water or the size of the outlet orifice. Several forms of apparatus are described. As shown in Fig. 3 a definite quantity of water is heated in a vessel 1 having an open pipe 4 extending upwards from the bottom, an infuser 6 containing a pre-determined amount of coffee between gauze disks is attached by a bayonet-joint 2, and the whole is inverted over a cup 14. The rate of flow is dependent on the height of the end of the pipe above the outlet 7, and is such that the coffee is exhausted by the time all the water has flowed through it. As shown in Fig. 4, boiling water is placed in a vessel 1 which is hermetically closed by a spring-held cover 20, and rests on the percolator 24 containing ground coffee between gauze disks 8, 9 surrounding a central tube 30 open to the atmosphere by a vent 28 and containing a sliding tube 27 with outlet-orifice 7. On opening a cock 18, water flows into the percolator 24 until the end of the tube 17 is sealed. The water passes through the coffee to the outlet 7 at constant pressure, as bubbles of air enter the vessel 1 by the pipe 17 when the end of the latter is uncovered and allow water to flow out of the vessel, to keep the level constant. While the tube 17 is temporarily blocked by air bubbles, water flows out by the tube 16 to maintain the level. In other modifications, a closed container is filled through a trapped pipe, or the level is maintained by a float-valve. Instead of varying the head of water, the rate of flow may be altered by varying the size of the outlet.
Patent GB-400567-A (GB)
Title: Improvements in padlocks
IPC: E05B67/02
Filed: 1933-03-21
Abstract: 400,567. Seal locks. ROBINSON, G. C. and JONES, T., Combination Works, Willenhall, Staffordshire. March 21, 1933, No. 23316. Divided on 400,830. [Class 44.] A padlock of the type having an apertured paper-seal-retaining cover movable so as to be engaged by the hasp of the lock has the cover connected to the casing by a projection on one member entering an aperture or recess in an upstanding edge on the other member when the cover is closed on to the casing. The Figure shows the casing 10 with the lock mechanism and hasp removed. The apertured cover 11 is formed on its bottom upstanding edge with a recess 18 into which enters a projection 17 on the bottom upstanding edge 16 of the casing 10 when the cover is closed up. Specification 354,574 is referred to.
Patent GB-373862-A (GB)
Title: Improvements in or relating to delayed-action electric switches, particularly for driving direction indicators
IPC: H01H7/08
Filed: 1931-08-19
Abstract: 373,862. Retractive switches ; retarding action of switches. GROHN, W., 18, Miltenberger Wes. Pankow, Berlin. Aug. 19, 1931, No. 23337. Convention date, Aug. 19, 1930. [Class 38 (v).] A switch for direction indicators has two or more operating levers a, b which can be moved against the action of retractive springs into engagement with contacts such as m, n, o; the levers return slowly when released, the delay being caused by clockwork and ratchet mechanism that is common to the two levers. In the form shown in Figs. 2 and 3, the lever a, which can be moved in opposite directions i n t o engagement with a contact m or n is pivoted at e and the lever h which can move ir one direction only into engagemenwith a contact o, is pivoted at d and has an arm b<1>. A lever l is also pivoted at d. Operation of the lever b or of a lever a up or down causes the engagement with a member f<1> of the arm b<1> or the arm a or the lever l respectively, the lever l being driven in a clockwise direction by a stud k on the lever a when the lever a is moved down. The member f<1> forms part of a member f which is pivoted at d and carries a latch 8 engaging a ratchet wheel h connected to a wheel z and chain gearing r. The latch slips over the ratchet wheel during operation of the lever a or b, but when the lever is released and a retractive spring acting on the member f<1> returns it and the lever, the latch engages the ratchet wheel and drives it and the braking gearing r. In a modification, Fig. 5, the arms a, b can both be moved in both directions and each of them has fixed to it a member q which lies between two levers x, y pivoted at d. The ratchet wheel h connected to the braking gearing is also engaged by two pawls g<1>, g<11> pivoted on the levers y, x. Operation of either lever a, b in either direction causes a member q to actuate a lever x or y and cause its pawl gll or g<1> to slip over the ratchet wheel and at the end of the stroke the top end of the lever z or y depresses a longitudinally-moving member u and causes this to release the other pawl g<1> or g<11> so that when the lever a or b is released the parts return under the action of the braking train.
Patent GB-295995-A (GB)
Title: Improvements in or relating to apparatus for use in colour photographic processes
IPC: G03B33/10
Filed: 1928-08-13
Abstract: 295,995. Kodak, Ltd., (Assignees of Seymour, M. W.). Aug. 22, 1927, [Convention date]. Colour screens.- Relates to optical apparatus for use in the lenticular film process of colour photography de. scribed in Specification 10611/09, [Class 98 (ii), Photographic processes &c.], and consists in employing, in conjunction with a screen of juxtaposed parallel colour areas associated with the objective, a diaphragm having a non-rectangular opening so shaped as to expose to light the full width of each colour area, but to alter, preferably independently, the amount of light falling on each area in accordance with the characteristics of the sensitive emulsion on the lenticular film, by masking the ends of one or more areas. Interchangeable masking devices may be so used, with which may be associated interchangeable light filters of uniform or variable density. Fig. 1 shows the optical taking system, comprising an objective 6 carrying a tricolour band screen 10, a rotary shutter 8, and a film gate 1 through which is fed a lenticular film 5 the lens elements of which are cylindrical and parallel to the bands of the screen 10. In front of the screen 10 may be fitted a masking cap 14 whose aperture is of the same width as the screen 10. Its shape may be elliptical if the three colour fields are to be reduced in the same proportion, or it may take various shapes bounded in each colour field by circular, elliptic or other arcs, or by straight lines, as shown for example in Figs. 5 and 9. The mask aperture may be covered by a light filter of uniform density mounted in a cap having a circular aperture, or a partly circular and partly elliptical aperture similar to that shown in Fig. 5. A similar auxiliary light filter may be employed having three fields of different density and also, if desired, of different colour transmission, associated with the three fields of the colour screen. Fig. 13 shows a roller blind arrangement mounted on the camera, front 47, whereby a band 51 divided longitudinally into a series of neutral light-transmitting areas of different density may be displaced so as to bring any area into position in front of the tricolour screen 10. The Specification as open to inspection under Sect. 91 (3) (a) describes also a square form of colour screen which, as shown in Fig. 11, (Cancelled). may have its aperture varied by masking plates 38 simultaneously displace able towards or away from each other by operating a screwed shaft 33 turning in bearings on the camera front 30. This subject-matter does not appear in the Specification as accepted.
Patent GB-438475-A (GB)
Title: Improvements in apparatus for drying photographic prints, blue prints and like articles
IPC: G03D15/02
Filed: 1934-08-14
Abstract: 438,475. Photographic drying and glazing apparatus. COHEN, A., 117, Whitecross Street, London. Aug. 14, 1934, No. 23422. [Class 98 (ii)] Apparatus for drying photographic prints &c. comprises an internally-heated rotary drum with its periphery of perforated metal, and a number of textile covers or holders for the prints stretched round the periphery of the drum. The drum 1 of perforated sheet zinc or galvanized iron has end discs 2 provided centrally with bushes 5 rotatable freely on a gas pipe 6 which is bent down and formed with heating-jets 8. Ventilating openings 13 are formed in the end discs 2. Washers 19 space the bushes 5 from bearing plates 10 secured on triangular standards 11. The peripheral sheet 1 is divided into segments by strips 4, and each segment has a circular aperture 12, these apertures being closed by a further segmental perforated metal sheet 14. Each segment has a holder for the prints comprising two sheets 15, 16 of absorbent textile material secured to the drum by an angle strip 17. The free edge of the outer strip 16 is secured to the longitudinal member 18 of a U-shaped frame 19 pivoted to the discs 2 at 20 so that the outer strip can be swung away from the drum. The sheet 16 is stretched round the drum by means of a spring 21 secured to a catch 22 which engages a spur 24 on the angle strips 17. To acquire a glossy finish, the prints may be dried with their faces in contact with either side of a metal sheet 25 having a highly polished surface, and placed between the covers 15, 16. A bolt 26 may be inserted in holes in the discs 2 to hold the drum in a fixed position. Modifications are mentioned in which the drum may be square in cross section ; the covers may be secured to the drum at their middle ; and the heating means may be electrical resistances or hot fluid conduits.