baber/WOPTO huggingface dataset:
Patent GB-248152-A (GB)
Title: Improvements in or relating to crystal detectors for wireless purposes
IPC: H01L29/00
Filed: 1925-01-28
Abstract: 248,152. Taunton, H. R. Jan. 28, 1925. Crystal detectors -Contact with the crystal is made by a brush 1 formed of good conducting wires and stiffening wires, and held within a sleeve 2 by a wedging-member 3 which concentrates the wires within the sleeve and then allows them to diverge towards the centre to form an annulus of wire ends or a solid bunch of wires. The wires may be of varying length to present a bevelled or concave surface towards the crystal. In the form shown the detector has two brushes which co-operate with a pair of crystals 10, 11. Each member 3 has a screwed stem 6 passing through an end plate 8 and having a nut 9 which facilitates adjustment of one brush within the container 7. The sleeve 2 may be formed integrally with the plate 8 and may be screwed into the container 7. As shown each sleeve consti. tutes a push-in member, a spring clip 14 being provided for retaining the sleeve within the container. The clip 14 also constitutes the connection between the leading-in wire 12 and the brush. The brush may be locked in any set position by the terminal screw 15, but may be unlocked to test for fresh contacts with the crystal, electrical connection being maintained by the clip 14. In a modification, the terminals 15 may be in the form of plugs which fit into the sockets. Alternatively the leading-in wires may be connected directly to the stems 6 of the brushes, the terminals 15 being dispensed with. In modified forms, a simple crystal is pressed into contact with one brush or disposed between two brushes.
Patent GB-719185-A (GB)
Title: Production of anhydrous zirconium fluoride
Inventor: ANDERSON RAYMOND JAMES
Filed: 1953-01-28
Abstract: Anhydrous zirconium tetrafluoride is produced by a process comprising (1) heating an aqueous solution of zirconium fluoride containing hydrofluoric acid at 120-170 DEG C. until it is sensibly dry and (2) calcining the dried product at between 300 DEG C. and its sublimation temperature.  In the preferred method zirconium oxide is subjected to the action of sufficient 30-70 per cent. by weight aqueous hydrofluoric acid to provide 4.2-4.4 mols of HF per mol of zirconium oxide at 60-80 DEG C. for 4-6 hours; the resulting products are heated to dryness at 140-160 DEG C. and calcined at 300-350 DEG C. for 4-5 hours.  Examples are given in which zirconium oxide and zirconyl chloride are used as sources of zirconium.
Patent GB-1454115-A (GB)
Title: Forming tubular bodies from laminated sheet material
IPC: B29C65/18
Filed: 1974-01-18
Abstract: 1454115 Seaming non-metallic sheet material V FLAX 18 Jan 1974 [22 Jan 1973] 02532/74 Heading B5K [Also in Division B8] A tubular body is formed by wrapping a laminated sheet having outer thermoplastic layers 3, 3a around a mandrel 4 formed with a longitudinal groove therein and having heating means 7 therein, edges 5, 6 of the sheet overlapping in the region of and along the length of the groove, and applying pressure to the overlapping edges 5, 6 by a pressure head 8 having a working surface 35 shaped to the desired peripheral shape of the tubular body. As shown in Figs. 1 and 3, the sheet comprises an aluminium layer 2 sandwiched between two thermoplastic layers or coatings 3, 3A. The heating means 7 comprises an electrical resistance element in the form of strip which defines two longitudinal grooves 32 in which thermoplastic material flows during bonding of the edges 5, 6. The face 35 of the head 8 is provided by a flexible sheet 36 of hard material, e.g. sheet metal, and a resilient backing member 10.  A plastics closure member 73, Fig. 4, having a frusto-conical collar 74 and an externally screw-threaded neck 75 is push-fitted into the tubular body 1 so that the collar periphery engages the body interior at a short distance below the adjacent free end thereof. A rotatable mandrel 77 is inserted in the body 1 and coacts with a non-rotatable tool 78 to inturn the free end 79 of the body 1. The mandrel 77 is rotated to spin weld the member 73 to the body 1, thermoplastic material flowing into an annular recess 80 in the tool 78 to form an annular rib (81), Fig. 5 (not shown).
Patent GB-269694-A (GB)
Title: Improvement in turbine nozzles
IPC: F01D9/04
Filed: 1926-01-28
Abstract: 269,694. Richardsons, Westgarth, & Co., Ltd., and Wyatt, B. B. Jan. 28, 1926. Nozzles.-A series of polished nozzle plates C, shaped to the desired profile, are fixed between concentric cylindrical walls formed in rings A. B, a straight portion of the blade length being held in inclined grooves A<1>, B<1> in the rings and the other curved portion being held between distance pieces D secured to the rings. The distance pieces D may be fixed in undercut annular grooves A<2>, B<2> in the rings. The nozzle plates, Figs. 5 and 6, are secured in the inclined grooves A<1>, B<1> by riveting over studs C<3> or by bolting the rings A, B together, or by electric welding, or the whole of the nozzle parts may be held together in compression by screws in the turbine casing. The outlet edge C<5> of the nozzle is inclined so as to be radial. The nozzles may be arranged in segments separated by blocks fitting the grooves A<2>, B<2>.
Patent GB-1246856-A (GB)
Title: Improvements in electrographic apparatus
Inventor: SHEPARD STANLEY CARDEN
IPC: G03G15/20
Filed: 1969-01-16
Abstract: 1,246,856. Fixing developed magnetic images. STANDARD TELEPHONES & CABLES Ltd. 16 Jan., 1969, No. 2558/69. Heading B6C. An electrographic apparatus in which a magnetic image is formed, powder developed on a drum or band, and then transferred to a substrate has a first means for directly heating the powder image on the substrate and second means which utilize heat radiated by the first means to pre-heat directly the powder image. As shown, a print drum 1 is selectively magnetized charged by recording means 2 and developed with powder containing a thermal fixing agent. The developed image is transferred to a paper web 7 by a roller pressed continuously or selectively, by a solenoid, against the drum 1. The developed image is fixed by quartz-iodine lamps 12 located in a housing 13 having a reflective surface 14, the housing being hollow or provided with tubes which allows water, to be circulated by a pump 15 from a reservoir 16 to preheat the web 7.
Patent GB-990685-A (GB)
Title: Improvements in chopper circuit arrangements
Inventor: FIELDEN JOHN ERNEST
IPC: H03F3/387
Filed: 1962-01-24
Abstract: 990,685. Inverting. FIELDEN ELECTRONICS Ltd. Jan. 24, 1962, No. 2581/62. Heading H2F. [Also in Division H3] In a D.C. chopper for a D.C. amplifier the D.C. is applied to transformer primary windings 11, 12 in series with the emitters of two transistors connected back-to-back and the transistors switched on and off together by an A.C. source applied to the bases through current limiting resistors 5, 6. A chopped D.C. is therefore derived from the secondary 14. Moreover the two windings 11, 12 cancel out any switching frequency voltage in the secondary 14, and may be bi-filar wound. Any residual voltage may be eliminated by a balancing potentiometer 16, and by a transformer electrostatic screen 15. The D.C. input may be isolated from or balanced with respect to earth.
Patent GB-720112-A (GB)
Title: Improvements in, or relating to, seal traps for sanitary appliances
Inventor: GOLDER HUGH CLIFFORD
IPC: E03C1/294
Filed: 1952-01-31
Abstract: 720,112. Traps. ECONOMIC WATER SOFTENERS, Ltd. Feb. 2, 1953. [Jan. 31, 1952] No. 2586/52. Class 33. A water-seal trap for wash-hand basins, baths and similar sanitary appliances comprises a U-shaped inlet pipe 4, the shorter leg of which is connected at 2 to a cylindrical anti-syphon chamber 1 whose axis is at right angles to the axis of the longer leg of the inlet pipe and which has an outlet pipe 5 connected to an outlet 3 at the opposite side of the chamber. The shouldered nuts 6 allow rotation of the pipes 4 and 5 relative to the chamber 1 to enable the trap to be adjusted to fit the various waste connections, and in an alternative form the .inlet and outlet at the bottom and top respectively of the chamber 1 may be disposed at opposite ends thereof for fitting in restricted spaces. A plug 7 allows cleaning of the chamber.
Patent GB-542614-A (GB)
Title: Improvements in methods and plants for hooping pipes and like pieces
IPC: B65H81/08
Filed: 1940-02-10
Abstract: 542,614. Heating wire electrically. SOC. ANON DES HAUTS FOURNEAUX ET FONDERIES DE PONT-A-MOUSSON. Feb. 10, 1940, No. 2618. Convention date, Feb. 14, 1939. [Class 39 (iii)]  In apparatus for electrically heating wire 2 which is to be unwound from a drum 1 on to a pipe 3, the current is supplied through two devices 6, 7, each comprising a plurality of contacts connected in parallel. Each device consists of a metal member 10 with rectangular holes 11 to receive carbon brushes 12 which rest on the wire 2. Each brush is spring-pressed and is connected by a cable 15 to a terminal on the side of the member 10. A uniform current supply is thereby obtained to a wire which may have surface irregularities. The devices 6, 7 may be stationary or may move parallel to the axis of the shaft 4. One of these devices may be mounted on the wire which has been wound to prevent premature cooling, and one may be replaced by a bath of molten metal through which the wire passes. The brushes may be arranged in a plane which is radially or axially arranged with respect to the wire.
Patent GB-418578-A (GB)
Title: Improvements in electrical starting devices for internal combustion engines
Filed: 1933-01-27
Abstract: 418,578. Starting prime movers. ECLIPSE MACHINE CO., Elmira, New York, U.S.A. Jan. 27, 1933, No. 2639. Convention date, Jan. 28, 1932. Addition to 414,351. [Class 38 (iv).] In electric starting systems for internalcombustion engines the starting motor is rendered inoperative during normal running of the engine and during backward rotation or backfire and is automatically rendered operative if the engine stalls, but in the case of backward rotation or backfire is held inoperative until a further action by the operator. The system may comprise an ignition switch 51 which also operates to energize a winding 8 for closing a starting circuit switch 4, which is opened on starting of the engine by the opening of contacts 9, 10 in the circuit of coil 8 by a pivoted lever 13 on an armature 15 acted on by generator voltage on a coil 17 and battery voltage on a coil 16 in opposition to the motor current in a coil 5, additional means for opening the contacts 9, 10 in response to backward rotation of the engine being provided. Contact 10 is mounted on a weighted trembler spring 11 which may be engaged, on backward rotation of the engine, by an arm 31 on a lever 23 connected by a rod 22 with a diaphragm 32 subjected to pressure in the fuel intake 35 of the engine. The rod 22 is of magnetic material, electrically insulated from the diaphragm 32 and connected to one end of a coil 24 surrounding it, the other end of the coil 24 being connected to the dead contact of the switch 5<1> so that on engagement of the arm 31 with the spring 11 the coil 24 assists the diaphragm to separate contacts 9, 10 and holds them so open after the back fire has ceased and until the coil 24 is de-energized by opening the ignition switch 5<1>. Thus, on back fire, the engine cannot be re-started until switch 5<1> is opened and re-closed. In a modification, Fig. 2, the diaphragm 36 acts on a lever 38 which moves a non-conducting link 41 to open contacts 9, 10. Movement of the link 41 completes the earth connection of the solenoid 46 through brushes 48, 50 bearing on the link 41 which has a conducting section 49, a spring-controlled armature 43 of the solenoid 46 being thus moved to engage a notch 44 in the link 41 and lock it until the switch 5<1> is opened. In a further modification, Fig. 3, the diaphragm 51 has an earth contact 52 of magnetic material which, on back fire connects with an insulated contact 53 on the fixed core of a solenoid 56 and thus energizes it so as to hold contacts 52, 53 closed even after back fire has ceased and draw the spring 11 away from the contact 9, the weight 59 on the trembler 11 being of magnetic material.
Patent GB-385458-A (GB)
Title: Improvements in the flues of cooking apparatus for fried potatoes and the like
IPC: A47J37/00
Filed: 1932-01-30
Abstract: 385,458. Frying-ranges. TOGNARELLI, J. R., New Garage, Manchester Road, Bolton. Jan. 30, 1932, No. 2835. [Class 126.] In a frying-range, the heating gases pass to a flue c behind the pan, thence to a flue t extending forwardly along a side of the pan, and thence through a damper-controlled opening u to a flue h which extends rearwardly to the chimney. In the construction shown, the pan is heated by gas burners a delivering into tubes b extending horizontally through the pan to the rear flue c, in the floor of which is an aperture g covered by a counterbalanced explosion flap. A flue h<1> controlled by a damper i<1> allows a regulable amount of the gases to pass from the flue t to a heating-chamber k extending below the cooked food container j, and connected to the chimney by a pipe (not shown). The hot gases pass through a tapering ejector tube p in the chimney, the resulting suction causing withdrawal of fumes through tubes o extending from the space above the pan and from the food container j.
Patent GB-113616-A (GB)
Title: Improvements in Electric Relays particularly for Railway Traffic Controlling Apparatus.
IPC: B61L1/18
Filed: 1918-02-19
Abstract: 113,616. McKenzie, Holland, & Westinghouse Power Signal Co., (Assignees of Zierdt, C. H.). Feb. 20,1917, [Convention date]. Electrical systems, automatic.-Relays are designed to operate with current of signalling frequency and to remain unaffected by propulsion current of lower frequency. The insulated section A of track is supplied through a transformer T with signalling current of higher frequency than that of the propulsion current which returns through the rails. When no train is on the section, the relay is energized by the higher frequency signalling current and is unaffected by any propulsion current derived from the rails. The relay closes a local circuit which moves the signal to " clear." When a train enters the section, the relay coils are short-circuited and the signal returns to " danger." The construction of the relay is described in detail.
Patent GB-302077-A (GB)
Title: Improvements in or relating to digesters
IPC: D21C7/00
Filed: 1928-01-31
Abstract: 302,077. Penman, J. W. Jan. 31, 1928. Digesters.-A false bottom is so fitted in a digester as to be slightly flexible or yielding between the rivets of the joint. This may be effected by providing a number of fine saw-cuts extending radially inwards from the periphery.
Patent GB-551108-A (GB)
Title: Improvements in or relating to the manufacture of castellated nuts
IPC: B23C3/24
Filed: 1942-03-10
Abstract: 551,108. Making nuts. BARLOW & CO., Ltd., H. J., and BARLOW, H. J. March 10, 1942, No. 3129. [Claees 83 (ii) and 83 (iii)] Milling.-In a device for milling the castellations of nuts the nut A is frictionally gripped internally by spring fingers 5 on a holder 1 carried in bearings 2, the holder being moved axially to place the nut in a hexagonal guide 7 and then given a helical movement to advance the nut to a milling cutter 3 while the holder slips in the bore of the nut. The helical movement is effected by a handle 9 on the holder which co-acts with an inclined cam guide 10 and is moved from a starting position to a position wherein the slot is cut to full depth. After the slotting operation, the handle 9 is first reversed to the starting position and is then given an additional reverse movement while the nut is still held in the guide, thus indexing the nut with respect to the holder. The latter is then axially withdrawn to disengage the nut from the guide, rotated forward to the starting position and then moved axially to re-engage the nut in the guide for cutting the next slot. In a modification, Fig. 5, the handle 9 is guided by a cam slot 17 which is shaped so that after the full depth of cut is reached on the forward movement of the handle, the nut is slightly withdrawn from the cutter. In the case of small nuts, two opposed slots may be cut at each operation.
Patent GB-120545-A (GB)
Title: Improvements in or relating to Controlling Mechanism for use in Electrical Installations.
IPC: G05F1/648
Filed: 1918-02-22
Abstract: 120,545. Soc. Anon. des Etablissements L. BlÚriot. Nov. 7, 1917, [Convention date]. Lighting systems; regulation, automatic systems and apparatus for.-In variable-voltage supply systems, such as railway lighting systems, the voltage on the lamps is maintained constant by a resistance d<3> in series with the line and controlled by a quick-action or vibrating regulator. The coil d of the regulator is connected across the line and normally shunts the resistance; if the voltage rises above the normal the resistance is placed in the circuit. When the generator speed falls, the battery b supplies the lamps. A resistance d<2> is included in the coil circuit when the regulator contacts open.
Patent GB-1045016-A (GB)
Title: Improvements in or relating to mirrors
IPC: G02B5/08
Filed: 1964-01-24
Abstract: 1,045,016. Mirrors. A.ELLIOTT. Jan. 12, 1965 [Jan. 24, 1964], No. 3225/64. Heading G2J. [Also in Division H5] A replica mirror is produced by coating a cleaned surface of a negative master 1 with a layer of gold, applying to the gold coating a blank 2 separated therefrom by a coating of resin which is then cured, and removing the gold coated blank from the master 1. The gold film may be subjected to heat treatment prior to application of the resin. When forming a hemi-toroidal replica mirror, the master 1 is formed from a glass rod ground to produce the required curvature over its length. The ends of the rod are supported in coaxial cylinders 3, 4 having an external radius equal to that of the hemi-cylindrical blank 2. The rod 1 and blank 2 can then be mounted coaxially in a vee-block 5. The resin is cast between the gold coated rod 1 and the blank 2 and subsequently cured. Two such replica mirrors may be positioned in a cylindrical tube to form a toroidal mirror for use in radiology.
Patent GB-1381561-A (GB)
Title: Method of producing a glass blade with a sharp cutting edge
IPC: C03B23/047
Filed: 1973-01-23
Abstract: 1381561 Glass knife or razor blades J W HICKS JNR 23 Jan 1973 [8 Feb 1972] 3290/73 Heading B4B [Also in Division C1] A blade for a knife or razor is produced from glass (see Division C1), and is of generally triangular cross-section. The blade may be slidable in a razor handle, Figs. 6, 7 and 13 (not shown) or into a handle, Fig. 8 (not shown),  to act as a knife. In a modification, the blade may be formed with a glass cutting edge secured, e.g. by adhesive, to a non-glass body portion, Figs. 14, 15, 16, 17 (not shown).
Patent GB-1120441-A (GB)
Title: Manufacture of polyurethanes
Inventor: HAGGIS GEOFFREY ARTHUR
IPC: C08G18/38
Filed: 1965-01-26
Abstract: Flexible or rigid, cellular or non-cellular polyurethane materials are made by reacting organic polyisocyanates with compounds containing two or more OH groups per molecule, in the presence of a 1,3,5-tris-(hydroxyalkyl) hexahydro-s-triazine. Preferred hydroxyl group containing bodies are polyesters, polyesteramides, polyethers or mixtures thereof.  Conventional di- or tri-isocyanates may be used.  For cellular products, a gas-generator, e.g. water or a low boiling liquid should be included.  Usual catalysts and other adjuvants may be included.  Examples employ the tris-(hydroxyethyl) or -(hydroxypropyl) hexahydro-s-triazines.
Patent GB-933642-A (GB)
Title: Improvements in control apparatus for power transmissions
Inventor: BOWERS ERIC HIDER
IPC: B60W30/18
Filed: 1959-01-30
Abstract: 933,642. Fluid pressure servomotor control systems. DOWTY HYDRAULIC UNITS Ltd. Jan. 29, 1960 [Jan. 30, 1959], No. 3413/59. Addition to 878,511. Classes 69 (2) and 135. The invention described and claimed in the parent Specification is modified in that the manually operable setting means controls both pump displacement and prime mover speed. A diesel engine 1 drives a variable positive displacement pump 2 connected by pipes 3 and 4 to a positive displacement motor 5 the output shaft 6 of which is connected to the vehicle wheels. The pump displacement is adjustable by a servomotor 25 under the control of a hand lever 68 acting through a shaft 69, cam 74, link 28, spring unit 27 and the rod 26. The pipes 3 and 4 which receive make-up fluid under pressure from an auxiliary pump 18 are connected by conduits 29, 31, respectively, to plungers 35, 36 which are loaded by a spring 38 the compression of which is variable by a cam 41 on the rod 26. The compression of the spring 38 is at its maximum when the pump is at zero displacement, i.e. when the hand-operated lever 68 is in its central position. If, at any given pump displacement, the pressure in either of the pipes 3, 4 should exceed that determined by the cam 41 and spring 38, the corresponding plunger 35, 36 is moved to allow fluid pressure to act on a piston 62 which is moved against a spring 63 to connect the pressure fluid to one or other of the pistons 47, 48 which moves the cam 41 and the rod 26 in a direction to reduce the pump displacement. This arrangement prevents stalling of the diesel engine by excessive movement of the lever 68 or if the vehicle is climbing a steep incline. The speed of the diesel is selected by positioning the control-bar 8 of the fuel injection pump 7 through a cam 73 on the shaft 69, the rod 14, the piston 11, the spring 12 and the diaphragm 9. The selected speed is maintained by subjecting the diaphragm to the pressure at the throat of a Venturi 16 in the air inlet manifold. The profiles of the cams 73, 74 are such that the diesel speed adjustment is effected evenly throughout the complete movement of the lever 68 whereas the pump displacement adjustment is only effected during the first 15 degrees of movement of the lever 68 from its central position. Specification 933,643 also is referred to.
Patent GB-270787-A (GB)
Title: Improved grass box for lawn mowers
IPC: A01D34/42
Filed: 1926-02-06
Abstract: 270,787. Bunt, W. B. Feb. 6, 1926. Lawn-mowers. - A metal grass-box for any type of lawn-mower consists of three separate parts adapted to be packed in a small space for transport and to be assembled together readily when required. The two end parts each consist of a metal sheet having its edges bent up at right angles where it is to be connected to the body part. Hooks D for attaching the box to the mower are riveted to the end pieces. The body part consists of a shaped piece of thin sheet metal provided with strengthening wires along the ends that are to form the side edges of the opening of the box. These wires have projecting ends adapted to be inserted into rolled-over edges of the end pieces at the ends of the box opening. Holes are formed in the overlapping parts E of the end pieces and body part to receive screws L provided with nuts.