baber/WOPTO huggingface dataset:
Patent GB-239110-A (GB)
Title: Grid for electron discharge tubes
IPC: H01J19/38
Filed: 1925-02-03
Abstract: 239,110. Schrack, E. Feb. 3, 1925. Vacuum tubes.- The grid of a thermionic valve is s( constructed that the distance of its opera tive surface from the intermediate or hot test portion of the filament is less than the distance from the ends of the fila ment. Preferably the grid is made from a punched metal strip consisting of parallel side portions 1, Fig. 3, united by U-shaped strips 2. A portion of the strip is formed into a cylinder, the strips 2 being bent inwards so that they are radial to the axis of the cylinder, as shown in Fig. 4. In a modification, the grid may be formed by winding wire on a core of double cone formation.
Patent GB-1423322-A (GB)
Title: Method of preventing chemical attacks on mineral fibres in fibre reinforcement
IPC: C03C25/1025
Filed: 1974-01-23
Abstract: 1423322 Fibre-containing cement material GULLHOGENS BRUK AB 23 Jan 1974 [24 Jan 1973] 03077/74 Heading C1H A cement material reinforced by mineral fibres is made by treating the mineral fibres with a solution of a metal salt and mixing the treated fibres with a cement material, the metal salt being one which forms an insoluble reaction product with the cement material whereby a film of reaction product is formed on the fibres during mixing thus preventing chemical attack on the fibres by the alkaline cement gel. The metal salt may be a salt of Zr, Cd, Mg, La, Mn or a mixture thereof, e.g. ZrOCl 2 , ZrO(NO 3 ) 2 , ZrOI 2 , ZrOBr 2 , Cd(NO 3 ) 2 .4H 2 O or The metal salt may be used in aqueous or ethanolic solution. In the example glass fibres treated with ZrOCl 2  are mixed with Portland cement.
Patent GB-844940-A (GB)
Title: Vehicular warning system
IPC: G01S17/931
Filed: 1957-01-29
Abstract: 844,940. Photo-electric vehicle warning devices. ELTRO GESELLSCHAFT FUR STRAHLUNGSTECHNIK. Jan. 29, 1957 [Feb. 2, 1956] No. 3147/57. Class 40(3). [Also in Group XXXVI] A vehicle warning device comprises an electrical oscillator controlled by a photo-condenser having a dielectric sensitive to infra-red light and an alarm controlled by the oscillations, the output of the oscillator varying in dependance upon the amount of infra-red light received by the dielectric. Optical transmitters of oscillated infra-red light are fitted on the back and front of a car. Light from a car in front or light reflected from a post in the road is received by similarly fitted receivers having infra-red filters and focused by paraboloid mirrors on to the photocondenser. The photo-condenser comprises two condenser plates in a photo-sensitive dielectric powder such as crystalline sulphides, selinides or telurides of zinc, cadmium or mercury activated with copper, silver, gold, aluminium, indium, gallium or an alkali or ammonium halide, (Fig. 4, not shown). The photo-condenser PHC is connected in the grid circuit of a vacuum tube 60 comprising a diode and a pentode which acts asthe oscillator, to form part of a parallel-resonant circuit including an inductance coil 61 and trimmer condenser 62. A plate 70 of the pentode is connected to the mid-point of an inductance coil 71 forming part of a parallel-resonant circuit including a tuning condenser 72. A coil 61, which is connected to grids 64, 67 via a coupling condenser 73, is inductively coupled to the coil 71 to provide negative feed-back in response to increasing amplitudes of oscillations in the circuits PHC, 61, 62 and 71, 72. Condensers 62, 72 are adjusted to stabilize the oscillator tube 60 in a trigger condition, for which purpose an antiresonant circuit 74 and negative thermistor 75 are provided. When the photo-condenser PHC is irradiated the grid of the tube 60 will be detuned and the plate current will operate a relay 76 to actuate a brake 77 and buzzer 78 or energise a light transmitter. A glow tube 79 indicates the magnitude of the plate current. The plate 65 of the diode similarly acts as a "magic eye". Alternatively the photo-condenser may be a selfcontained unit remote from the oscillator. (Fig. 8, not shown). In another embodiment the detuning of the oscillator is detected by a frequency discriminator the output of which controls the brake &c. (Fig. 9 not shown). The transmitted light is modulated to distinguish it from incident light and to characterize the class of vehicle, highway lane or direction of travel. Application to ships, aircraft and missiles is also referred to.
Patent GB-755237-A (GB)
Title: Improvements in or relating to bakers' and the like ovens
IPC: A21B1/48
Filed: 1954-02-03
Abstract: 755,237. Bakers' ovens. VICARS, Ltd., T. & T., NAYLOR, J. F., and EATON, J. Feb. 1, 1955 [Feb. 3, 1954], No. 3151/54. Class 51(2). A bakers' oven of the type having zones heated directly and/or indirectly by combustion gases in a substantially closed cycle, has a conveyer 1 passing between upper and lower heating elements each comprising superposed flow ducts 2 and return ducts 3; and the inner walls 9 of the ducts 2 are formed with groups of perforations 7, each group being associated with a pivoted deflector. plate 10 controlling the passage of hot gases through the perforations into the oven chamber 8. The heating elements are also divided into several ducts by vertical longitudinal partitions 5, the flow of hot gases from burners 17 begin controlled by dampers 6 in each duct. Dampers 12 control passage of the gases back into the return ducts 3, and dampers 14 and 16 control overspill of gases to the waste duct 15 from the ducts 3 and from the baking space 8 respectively. In a modification, Fig. 4 (not shown), each end of the deflector plate 10 may be angularly adjusted. In a further modification, Fig. 5, the ducts 24 leading the overspill from the oven chamber are provided with branches 30 connected to the waste duct 15 and with branches 33 connected by elbows 34 to the return ducts 3. Passage of gases to each of these branches is controlled by a T-shaped sliding damper 25 formed with a leg 26 obturating a branch 33 as an apertured arm 27 allows gases to pass to the corresponding branch 30 and with an arm 28, which cuts off the branch 30 as the damper is pulled outwardly by an external handle 32. The hot gases from the perforations 7 may be directed positively onto the loaded conveyer 1 by transverse, vertical plates associated with each or with several of the transverse rows of said perforations, Figs. 9-11 (not shown), and ports associated with each pair of plates may be provided in the side walls of the oven chamber for exhausting said hot gases.
Patent GB-280071-A (GB)
Title: Improvements in blocks for building construction
IPC: E04B2/06
Filed: 1927-02-03
Abstract: 280,071. Smith, A., and Jones, A. E. Feb. 3, 1927. Bricks, special shapes of.-Bricks of the type provided with projecting dowels on one face and a common dowel-receiving recess on the opposite face are provided with dowels spaced so that the bricks are self-centering when laid directly on one another, when laid to break-joint, or when laid crosswise at corners, and in addition V- shaped grooves are provided on all four vertical edges. In the ilustrated form a series of dowels C rise from one flat face D, while the opposite face is recessed so as to leave a narrow margin B all round the edge, the recessed part receiving all the projections prior to being filled in with grout. V-shaped recesses F are provided at the sides and ends to facilitate division, and to form cement dowels between the blocks.
Patent GB-449697-A (GB)
Title: Improvements in tank ships for transporting wine or similar liquids
IPC: B63B25/08
Filed: 1935-01-31
Abstract: 449,697. Ships for transporting potable liquids. CONTE, H., 37<bis>, Avenue du Roule, Neuilly, Seine, France. Jan. 31, 1935, No. 3197. [Class 113 (ii)] Ships for transporting wines or similar potable liquids in bulk are provided with tanks having corrugated internally-corrugated walls such as are described in Specification 411,972 and anti-surging devices as described in Specification 421,463. The tanks Q are disposed in the hold in two longitudinal rows port and starboard. A central gangway between the banks runs at one or both ends into an athwartship apartment K in which tank-filling employing and cleaning operations are effected and supervised. The distributing charts 22 located in this compartment K are connected by a supply and return pipe system with the individual tanks Q in the other side with delivery tanks 13, 14 situated in the forward compartment L. The pipe systems are generally arranged to incline towards the distributing chests 22, so that at the termination of the filling and emptying of the tanks the residual liquid in the connecting pipes and control cocks flows back to the distributing- chest. Each of the tanks is provided with a load liquid level and these levels are repeated by a system of bell indicators to an indicator board in the control room K. In filling the tanks the rate of delivery of the pumps 13, 14 is automatically slackened when the tanks are substantially full and are finally cut off when the tanks are completely full. A smaller capacity pump may also be employed at the completion of the filling operation. After the emptying of the tank the pipe system may be employed to wash out the tanks with water. A ventilating system is provided to vent the holds and a fire-extinguishing device is described as well as a device to supply warm or cooled air.
Patent GB-1515323-A (GB)
Title: Registration apparatus for use with or incorporation in a machine which has relatively movable parts such as a line printer
IPC: G02B26/10
Filed: 1975-05-22
Abstract: 1515323 Registration apparatus CENTRONICS DATA COMPUTER CORP 22 May 1975 [5 June 1974] 03224/78 Divided out of 1515321 Heading G4H [Also in Division G1] Registration apparatus for use with or incorporation in a machine which has two relatively movable parts (e.g. a printer), comprises an elongate registration strip 113 having a row of uniformly spaced transverse slits 113g through which light can pass and a row of opaque bars each separating a respective pair of slits; means for mounting the strip on one of the parts; a housing 132 together with means for mounting it on the other part, the housing having a slot 137 to recieve the strip, a first chamber and a second chamber, each chamber having a respective opening communicating with the slot; a light source 136 in the first chamber to illuminate the strip, one of the openings being narrow so as to permit light to pass through only one slit at a time to the second chamber; photo-detector means in the second chamber; and circuitry responsive in use to the photodetector means to produce a first series of registration pulses upon detection of leading edges of the slits and an alternating second series of pulses upon detection of trailing edges of the slits upon relative movement of the strip through the slot in the housing. Two staggered rows of slits with corresponding light source and photodetector assemblies may be used with a printer such as that of the parent application to provide to phase displaced pulse trains for bidirectional printing.
Patent GB-1526313-A (GB)
Title: Apparatus and method for regulating the temperature of temperature-sensitive apparatus
IPC: G05D23/19
Filed: 1976-01-28
Abstract: 1526313 Heating chromatograph columns FOXBORO CO 28 Jan 1976 [14 Feb 1975] 03271/76 Heading B1H [Also in Division G1] Apparatus for regulating the temperature of equipment, e.g. chromatographic equipment, comprises a compartment 10 containing a heat exchanger 32 consisting of two separate containers for fluids at different temperatures. a supply of a first fluid, e.g. steam at a higher temperature to one of the containers, flow means responsive to a pressurized second fluid to develop flow of a gaseous third fluid within the other of the containers for heating and subsequent circulation within the compartment, and regulating means responsive to the temperature in the compartment for regulating the flow of the third fluid. A thermostat assembly 64 comprises a bimetal 62 serving as a flapper for a nozzle 58 and fastened to a spring 84 which is engaged by a cam 86 mounted on a shaft 88 carrying an adjustment knob 89; the nozzle is carried by a support arm 90 adjustable by a screw 92. The exchanger 32 comprises two coaxial tubes 34, 36 defining a container 38 between them through which steam circulates from a pipe 40. Air in the compartment 10 is passed within the inner tube 34 (whereby it is heated on contact with the inner tube) by means of pressurised air 56 which is ejected from a nozzle 50; the amount of air ejected is controlled via a relay 54 by the back pressure on the nozzle 58 which is dependent on the clearance between the bimetal 62 and the nozzle 58. Air from the relay vent 54 serves to cool the compartment. The chromatographic equipment comprises a sample valve 12 which in response to a signal injects a quantity of sample and carrier gas into the column 14. A detector 16 includes an orifice 18 producing pressures on lines 20, 22 which are passed via a pneumatic amplifier 24 to produce an output signal indicative of the eluting concentrations.
Patent GB-545233-A (GB)
Title: Electric suction cleaner
IPC: A47L5/24
Filed: 1941-03-11
Abstract: 545,233. Vacuum cleaners. HERZOG, H. March 11, 1941, No. 3320. Convention date, March 20, 1940. [Class 8 (i)] The suction nozzle 7, connecting channel containing the fan 5 and motor 3, and outlet 8 leading to an external dust-bag are in line and the interior of the casing 1, 2 forming and enclosing these parts is streamlined. The motor casing 4 is insulated, and vibration damped, by an insulating plate 19 through which it is supported from the body or outer casing, which is formed in two parts joined transversely. The fan blades are shaped to the casing. The dust-bag has an air valve 9. A hollow handle connection 14 is fixed on the casing and may contain a contact 16 communicating with the motor switch and supplying current to heating coils which may replace the dust-bag when a hot-air douche is required.
Patent GB-313020-A (GB)
Title: Improvements relating to apparatus for handling and quenching coke
IPC: C10B39/04
Filed: 1928-02-03
Abstract: 313,020. Dempster & Sons, Ltd., R., and Handley, W. H. Feb. 3, 1928. ! Discharging; cooling discharged materials.-In coke-quenching apparatus of the kind in which separate charges of coke are conveyed in a telpher skip to a small quenching-bench of approximately the same capacity as the skip, the perforated bench B is mounted at an incline in a framework A and is provided at the lower end with a discharge gate C, the operation of this gate and the supply of quenching water being controlled by an operator other than the telpher driver. The excess quenching water and the breeze are directed into a trough F by a base plate E and a pivoted flap H, the latter being turned, when the gate C is opened, to form an extension of the bench B and so prevent the coke on its way to the hopper G from entering the trough F. The latter is connected by a pipe f with a settling and filtering tank J from which the clear water is returned by a pump j<5> to the spraying nozzles j<4>. The gate C is actuated through ropes c, counterweighted pivoted levers c<1> and links c', by an electric motor D; the motor D, another motor driving the pump j<5>. a valve j<7> on the water supply main j<6>, and the movement of the flap H are all controlled by the second operator.
Patent GB-251698-A (GB)
Title: Improvements in spindles
IPC: D01H7/04
Filed: 1925-02-06
Abstract: 251,698. Marks, E. C. R., (Saco-Lowell Shops). Feb. 6, 1925. Channels in vertical-shaft bearings.-In a spinning spindle bearing, lubricant, fed to the bolster casing 10 through the spout 24, passes through slots in the bolster 4 to the step bearing 5 and works its way up the spindle to a thrower ring 26 which throws it into a well 27 formed between the bearing bush 7 and a sleeve 18. The lubricant passes from the, well 27 through passages in the ball and socket bearing and down a passage formed by a split in one side of the sleeve 16 to the bottom of the bolster casing 10.
Patent GB-767556-A (GB)
Title: Improvements in or relating to polish and like applicators
IPC: A45D33/00
Filed: 1955-02-04
Abstract: 767,556. Pads; handles. SCHOLL MANUFACTURING CO., Ltd. Feb. 4, 1955 [Feb. 4, 1954], No. 3410/55. Classes 19 and 61. [Also in Group XIV] An applicator pad comprises a substantially flat base-plate of soft resilient material and an upstanding handle of the same material secured centrally to one face of the base. The shoe dressing applicator shown in Fig. 1 comprises a baseplate and a handle made of fabric covered foam latex. In Fig. 3 (not shown) the base is reversed to bring the fabric on top so that the pad is suitable for applying powder, and fabric covering is provided on both sides of the handle, while in Fig. 5 a cylindrical handle is provided.
Patent GB-815174-A (GB)
Title: Improvements in spray nozzles
Inventor: MOTT LAWRENCE FARNELL
IPC: B05B1/32
Filed: 1957-02-01
Abstract: 815,174. Spray burners. HOBSON Ltd., H. M. Jan. 22, 1958 [Feb. 1, 1957], No. 3584/57. Class 75(1) A spray nozzle for injecting fuel into a gas turbine and having a substantially linear pressure flow characteristic comprises a plug 3 having one or more orifices 5 through which fuel flows into a chamber 11 with a diverging wall against which faces a resiliently flexing disc 6 which at its edge moves away from the wall a variable amount dependent on the pressure of the fuel to give a diverging spray. The disc is bolted at its centre with the interposition of an appropriately sized distance piece 8 to the plug 3 by a bolt 10. The disc periphery co-operates with a deflector ring 7 screwed on to the plug and having its inner wall of the same diverging angle as the wall of the chamber 11.
Patent GB-192611-A (GB)
Title: Improvements in or relating to cream separators
IPC: B04B11/02
Filed: 1922-02-07
Abstract: 192,611. Coote, W. G. Feb. 7, 1922. Density separators; cooling parts.-In a cream separator, the milk is fed from a float chamber b<1> at a rate automatically controlled by the speed of the bowl to which is fixed an air suction device, comprising blades a<2>, which reduces the pressure in a removable vacuum dome a<3> from which milk flows by way of the ports b<4> in the tube a<1>. The separated cream is caused to pass over a corrugated disc d where it is cooled by the air current and drops on to the projection e on a water jacket and passes away by the outlet e<2>. In a modification the float chamber and vacuum dome are arranged concentrically with the axis of the bowl.
Patent GB-554354-A (GB)
Title: Improvements in and relating to copyholders
IPC: B41J29/15
Filed: 1942-04-07
Abstract: 554,354. Copy-holders. DODDS, N. April 7, 1942, No. 3698. [Class 100 (iii)] The paper-feed roller 14, Fig. 2, is turned by a spring-tensioned belt 19, which passes around it and is operated by a finger-lever 20, so as to grip and turn the roller upon depression of the fingeriever and to slip over the roller when the lever is released. The finger-lever is connected by a pivot 23 to a second lever 22, to the rear end of which is attached one end of the belt 19. The other end of the belt is connected through a spring 25 to an intermediate point of the lever 22, the front end of which slides on the floor of the casing. The extent of the feed movement is adjusted by means of a cam 27. Rings 17 surrounding the roller 14 hold the copy against a presser-plate 9. The roller 14 turns on a fixed axle 10, Figs. 5 and 6, from which it is spaced by a ring 15 and projections 16. Specification 418,546 and U.S.A. Specification 2,162,706 are referred to. Reference has been directed by the Comptroller to U.S.A. Specification 2,273,841.
Patent GB-1362884-A (GB)
Title: Slats for conveyor belts
IPC: B65G15/42
Filed: 1972-11-16
Abstract: 1362884 Conveyer belt slats STEELACE Ltd 16 Nov 1972 [27 Jan 1972] 3789/72 Heading B8A [Also in Division E2] A slat member 11 is formed as a plastics moulding and has threaded bores 17 to receive threaded studs 21 provided on a base 19 of a fastener member 18. In securing the slat to a conveyer belt, the belt is punched with a series of holes corresponding to the slat bores 17 and, after passing the studs 21 through the holes, the slat is hammered on to the studs. There will normally be several fastener members for each slat. In place of the members 18 there may be individual headed bolts for use with an apertured strip engaging two or three of the bolts. The members 18 are of plastics but may be of metal. The bores 17 may be un-  threaded.
Patent GB-536785-A (GB)
Title: Improvements in or relating to tripods
IPC: F16M11/16
Filed: 1940-03-01
Abstract: 536,785. Tripods; adjustments. KODAK, Ltd. March 1, 1940, No. 3848. Convention date, March 29, 1939. [Class 52 (iii)] Telescopic tripod legs 11, Fig. 1, are secured to a tripod head 10 by brackets 13 pivoted to lugs 14 by clamping bolts 15 and are formed of angular sections 12, 16, Fig. 2, frictionally clamped by lugs 20 fixed to the outer sections 16 and hinged at 26 to movable jaws 25 exerting pressure at the re-entrant angle 29 of the sections. The member 25 is actuated by a hollow bolt 32 having threaded engagement with the member 25 and provided at its respective ends with a flange 33 and cap-nut 35. The pairs of bolts 32 are oppositely threaded and are simultaneously rotated by a rod 37 with a hand grip 38 recessed at 40 to receive compression springs 39. The handle 38 also facilitates manipulation when adjusting the length by pulling out the sections.
Patent GB-1521864-A (GB)
Title: Method and apparatus for simultaneously printing sheets on both sides
IPC: B41F21/10
Filed: 1977-01-31
Abstract: 1521864 Feeding sheets to, and delivering sheets from a work station REINHARD MOHN OHG 31 Jan 1977 [30 Jan 1976] 03883/77 Heading B8R  Sheets are fed through the nip between two coacting cylinders 7, 10 effective to simultaneously print both sides by means of a feed drum 4 comprising a number of friction wheels, air blast 18 urging the sheet against the drum, suction box 22 which holds the sheets away from the cylinders prior to the impression line, and air blast 26, after impression, which strips the sheets from one cylinder and urges it against the others. Conventional feed and delivery systems may be provided, but the delivery may include air cushion members 14 (also Fig. 6, not shown) to prevent smuging of the wet ink. In the embodiment shown, cylinders 7 and 10 are offset cylinders, co operating with plate cylinders 6 and 9.
Patent GB-952313-A (GB)
Title: Improvements in or relating to gear wheels
IPC: F16H55/17
Filed: 1963-01-30
Abstract: 952,313. Windscreen wipers. ROBERT BOSCH G.m.b.H. Jan. 30, 1963 [March 21, 1962], No. 3916/63. Heading A4F. [Also in Division F2] In an electric windscreen wiper drive an axially yieldable rounded synthetic resin cap 6 is fixed to a worm wheel 3 and covers the end of the shaft 4 to which the wheel is fixed, acting to compensate for any axial play between the wheel and its casing (not shown). A motor controlling contact disc 10 is retained between a flange 8 on the cap 6 and an outer rim 14 joined to the cap by radial arms 11 having pins 15 engaging holes in the gear wheel 3.