baber/WOPTO huggingface dataset:
Patent GB-196112-A (GB)
Title: An improvement in timber lattice work
IPC: B27M3/00
Filed: 1922-01-25
Abstract: 196,112. Roberts, R. H. Jan. 25, 1922. Cutting and making lattice.-A series of preferably parallel straight saw cuts 3 are made lengthwise in a board A extending from near one end of the board to near the other end and a further series of cuts 4 are made from each end of the board to near the centre thereof each cut 4 being intermediate between two of the longer cuts 3. The wood is expanded as shown in Fig. 2 and may be reinforced as at 6.
Patent GB-597859-A (GB)
Title: Improvements in pneumatic paving breakers and like pneumatic tools
IPC: B25D17/04
Filed: 1946-01-24
Abstract: 597,859. Pneumatic tools. PHILIPPOVIC, J. W..Tan. 24, 1946, No. 2425. [Class 124] In a T-shaped pneumatic tool in which the cross-piece of the T is constituted by a pair of oppositely extending handles, the latter are inclined towards the chisel end so as to be at an angle of 70-80 degrees to the longitudinal axis of the tool. The handles may be formed integrally with a cylinder head unit which may be cast in steel, manganese bronze or aluminium bronze. This unit includes a union for an airline and a trigger-operated air-valve, and also forms a chest for a double-acting automatic differential pressure valve. The trigger of this valve may be disposed in a slot formed in one of the handles, whilst the other handle may be bored to accommodate an air-displacement lubricator. Specification 597,864 is referred to.
Patent GB-620814-A (GB)
Title: Improvements in hand wrenches
IPC: B25B13/46
Filed: 1947-01-27
Abstract: 620,814. Wrenches. LOGAN, G. T. Jan. 27, 1947, No. 2483. Convention date, Aug. 1. 1946. [Class 61(iii)] A pivoted outer jaw wrench comprises a lever handle 15 terminating in a fixed jaw 16 with a concave face having four nutengaging notches, arranged double hexagon fashion, permitting gripping of a nut in two adjacent positions, and a movable jaw 17 pivoted thereto at 18 and having three similarly spaced notches, a spring 19 normally urging the jaws into gripping position so that they may open slightly on the back stroke and slip over the corners of the nut. In the modification shown in Fig. 8, the forward end of the lever handle 27 is pivoted at 35 to the stem 34 of the lower jaw and has projecting ears 29 engaging bifurcations 31 of the other jaw member 32 pivoted at 39 to the stem 34, springs being interposed between the movable parts at 37, 33 to hold the jaws normally in nut-engaging position. Specication 618,203 is referred to.
Patent GB-138349-A (GB)
Title: Improvements in service doors
IPC: A47G29/20
Filed: 1920-01-27
Abstract: 138,349. Servidor Co., (Assignees of Matchette, F. J.). July 23, 1914, [Convention date]. Hotel indicators.-A number of cabinets are provided in a door &c. in which tradesmens' parcels &c. are deposited and from which they may be removed from inside the house, or in which articles may be placed for removal from outside by authorized persons. Indicators are provided actuated by opening the outer door to show when an article has been deposited. Two indicators 40, operated by the projection 25 and slot 45 during the sliding motion of a rod 23 show through the openings 20, 21 when an article has been placed in the cabinet. Specification 138,361 is referred to.
Patent GB-1078182-A (GB)
Title: Step-by-step voltage divider
IPC: G01T1/08
Filed: 1965-01-21
Abstract: 1,078,182. Resistance networks. CESKOSLOVENSKA AKADEMIE VED. Jan. 21, 1965 [Jan. 28, 1964], No. 2683/65. Heading H3U. [Also in Divisions G1 and G4] A step-by-step voltage divider comprises a plurality of main resistors R0-R9 in parallel with each of which is a secondary resistor R0<SP>1</SP>- R9<SP>1</SP>, the secondary resistors all having the same value. A subsidiary voltage divider R00- R09 having a total resistance equal to that of the secondary resistors is provided, together with means for connecting it in place of selected ones of the secondary resistors whereby the voltage steps provided by the main resistors may be subdivided without affecting the overall resistance characteristics of the voltage divider. As shown, the connecting means comprises relay contacts P0-P9. The required voltage is tapped off the subsidiary voltage divider R00-R09 by relay contacts P00-P09. The voltage divider may be used in a photo-electric photometer (see Division G1).
Patent GB-104207-A (GB)
Title: Improvements in or relating to Processes of Finishing the Edges of Pieces of Leather.
IPC: C14B11/00
Filed: 1916-02-23
Abstract: 104,207. British United Shoe Machinery Co., (United Shoe Machinery Co.). Feb. 23, 1916. Addition to 26300/12. Sheet material, finishing edges of.-Comprises an improved method of finishing the edges of pieces of leather by curling as described in the parent Specification. The edge of the leather is skived as shown in Fig. 2, and treated with a plastic material that has the property of shrinking on drying, so curling the edge as shown in Fig. 4. A solution of celluloid, for example in a mixture of acetone and alcohol, may be employed, and a small amount of a resinous gum may be added. The edge may also be moulded or burnished. Fig. 5 shows the application of a piece of leather as a toe tip.
Patent GB-1081153-A (GB)
Title: Improved two-stroke internal combustion engine
IPC: F02B25/00
Filed: 1966-01-21
Abstract: 1,081,153. Charging two-stroke engines. K.T.J. HENRIKSON. Jan. 21, 1966, No. 2904/66. Heading F1B. In a two-stroke I. C. engine in which the crankchamber acts as a scavenging compressor, the compressed gases flowing through the transfer passage 10, Fig.1 emerge from nozzles 11, Fig. 4 (not shown) to induce ambient air from inlet 12 thereby increasing the volume of scavenging gas. Each nozzle 11 is directed into a separate outlet passage 14 which communicates with inlet ports 15. The outlet duct 17 opens into an expansion chamber (not shown) to reduce back pressure. Fuel/air mixture is drawn into the cylinder through a carburetter 20, a throttle valve 21 and'a pistoncontrolled inlet port 7. After crank-chamber compression the mixture passes via piston port 8, cylinder port 9, Fig. 2 (not shown) into transfer passage 10. At T. D. C. position piston ports 23 register with inlet ports 15 whereby the remaining mixture in passage 14 is inducted back into the crank-chamber 5 and the passage 14 is filled with ambient air. On the subsequent piston stroke the ambient air in passage 14 enters the combustion chamber 3 before the mixture thereby, scavenging the chamber with minimum loss of mixture via the outlet passage. In modifications, a compression-ignition engine uses a fuel injector 18, igniter 19 being omitted and a valve 24 controls the transfer passage 10. In another embodiment air enters the crankchamber 5, Fig. 3 of a fuel injection engine via a non-return valve 26 controlling an inlet passage 25. Compressed air leaves the crank-chamber directly via a non-return valve 27 controlling an outlet passage 28 which connects with the transfer passage 10. A further non-return valve 29 prevents escape of gases through the inlet passage 12. The valve 27 may be biased to open suddenly when the crank-chamber pressure is near its maximum. In a modification the engine is arranged for spark ignition in a similar manner to Fig. 1. In a further modification of Fig. 3 all air is admitted via the nozzles 11, valve 27 being replaced by a double-acting valve which permits air induction through duct 10 whilst there is a partial vacuum in the crank-chamber and then closes until almost maximum gas pressure is obtained. The valve is then reopened to cause the jet pump to induce additional air.
Patent GB-1531182-A (GB)
Title: Framing artistic objects
IPC: A47G1/06
Filed: 1977-01-25
Abstract: 1531182 Picture frames SNAP JACK Inc 25 Jan 1977 [8 March 1976] 02932/77 Headings A4U and A4X A frame comprises a backing member 12 against which the object 22 is retained by an outer frame 24, the backing member 12 and the frame 24 having press-fit interengaging coupling means 20, 24, and the backing member having holes 16 for securing screws.
Patent GB-935251-A (GB)
Title: Improvements in or relating to strain gauges
Inventor: HOTCHEN EDWIN PHILIP
IPC: G01L1/22
Filed: 1960-01-27
Abstract: 935,251. Strain gauges. UNITED KINGDOM ATOMIC ENERGY AUTHORITY. Jan. 3, 1961 [Jan. 27, 1960], No. 2946/60. Class 106 (2). A device for measuring strain in a body 4 comprises members 3, 19 welded thereto at distinct points and an arm 8 fixed to member 3 and slidable in member 19. Arm 8 carries staggered knife-edged electrical contacts 25 which engage contacts 33 as body 4 extends. The number of contacts 33, 25 in contact is a measure of the strain. A second arrangement comprising an arm 8<SP>1</SP> and a member 19<SP>1</SP> may be provided to measure strain in a second direction. Arm 8 is adjustably fixed to member 3 so that the gauge may be preset in a desired range.
Patent GB-439335-A (GB)
Title: Improvements in and connected with boilers and other furnaces
Filed: 1935-01-29
Abstract: 439,335. Regulating combustion in furnaces. BABCOCK & WILCOX, Ltd., Babcock House, Farringdon Street, London.- (Assignees of Aktieselskapet Thunes Mek. Vaerksted; Skoyen, and Firing, W. ; Oslo, both in Norway) Jan. 29, 1935, No. 2948. Convention date, Jan. 29, 1934. [Class 51 (i)] In a boiler furnace or the like, turbulence is produced by a nozzle 5 injecting through an opening 4, a stream of air or steam from a pressure chamber 6 and the injector action is used to entrain air, combustion products or a mixture of both through a passage 7 within the wall 3 of the furnace, which passage is connected to the atmosphere and to the combustion chamber by lateral passages 8, 9 controlled by a valve 10. The valve may be a rotary valve allowing the upper end of the passage 7 to be closed. A row of injectors may be fitted.
Patent GB-413979-A (GB)
Title: Improvements in and relating to regeneration cartridges for breathing apparatus
IPC: A61M16/00
Filed: 1934-01-29
Abstract: Regeneration cartridges for respiratory appliances are filled with grains of caustic potash or soda in the form of spheres, ellipsoids, or eggs.  The grains may be of uniform size, preferably about 4 mm. in diameter, or for closer packing may be of different sizes.
Patent GB-977861-A (GB)
Title: Method of and apparatus for producing billet or tubes
Inventor: GLEN JOHN
IPC: B22D7/04
Filed: 1963-01-24
Abstract: 977,861. Casting machines. STEWARTS & LLOYDS Ltd. Dec. 6, 1963 [Jan. 24, 1963], No. 3045/63. Heading B3F. Molten material is gravitationally fed to a tubular die, in a volume which is unbroken across the die cross-section, and the die is moved after a predetermined period of time to a position where its mouth is lowermost to enable any still molten material therein to discharge therefrom. A number of billet moulds 13 of e.g. cast iron, melhanite or alloy steel are secured to a molten metal container 21 rotatable about a horizontal axis and the mould inlets are sealed temporarily by a disc. The moulds may be cooled or heated and rotated about their longitudinal axes by common-drive means 16, 24-29. The remote ends of the moulds are sealed by refractory plugs 15 with bleed holes 19. The period of dwell of the moulds in their lowermost position determines whether tubes or solid billets are produced, and the wall thickness of tubes.
Patent GB-371940-A (GB)
Title: Improvements in and relating to dry gas meters
IPC: G01F3/22
Filed: 1931-01-30
Abstract: 371,940. Gas meters. UNITED GAS INDUSTRIES, Ltd., 51, Lincoln's Inn Fields, London, and SIMPSON, S., Meresyke, Exmouth. Jan. 30, 1931, No. 3094. [Class 54.] The flag-wires a of a dry gas meter are cranked at their lower ends to engage with the diaphragm discs and are bent at their upper ends a<1> to form arms to which connecting rods b operating the tangent crank are attached. The bottom of each flagwire rests in a footstep bearing f fitted with a transverse locking pin g and the upper part is fitted with a sleeve a<3> resting in a bearing c which is secured in the valve plate d by a screwed cap e. The cap e may be hollowed out to hold lubricant. The attachment between the flag-wire and the diaphragm disc may consist of loose bushes engaging bearing sleeves k in metal frames j. Specification 259,377, [Class 54, Gas distribution], is referred to.
Patent GB-124518-A (GB)
Title: New or Improved Method of Mounting & Operating Doors & similar Structures for Aircraft Hangars or for other analogous purposes.
Inventor: ACKERMANN ALFRED SEABOLD ELI
IPC: E06B3/01
Filed: 1916-03-02
Abstract: 124,518. Ackermann, A. S. E. March 2, 1916. Operating doors by chain and cord arrangements, weights, link mechanism, toothed gearing, and electrically. - Doors and like closures for aircraft hangars and similar buildings are opened by causing the bottom edge to slide out at right-angles to the opening, and the upper edge to travel downwards so that the door lies flat when fully opened. The opening and closing may be effected by hauling on cables, or by a motor-driven pinion mounted on the door and engaging a fixed rack. In the form shown in Fig. 1, the door AD is guided by rollers R, S which travel along rails IIII, VV. At each side of the door are cables 4, 5; the lower cable 4 is attached to the door near the lower edge, and the upper cable 5 to a point C below the top edge of the door. Both cables are connected at the junction 7 to a single cable 8 which passes to a winch. In another form, in which the vertical guide paths may be omitted, the door is provided with two or more radius links or struts pivoted at their lower ends to fixed brackets, and at their upper ends to the middle of the door. In the form shown in Fig. 3, the guide paths are carried in the vertical plane and the door is counterbalanced so that it is in equilibrium in all positions; the line G<1>, G<2> shows successive positions of the mass centre of the door, and the lines H, V those of the centres of the rollers R, S. The cables 4 are each fixed at one end 21 and pass under and over pulleys 17, 16, thence around a driving-pulley 15, and a pulley 14 on the lower edge of the door, and are secured at the other end to a a fixed point 22. The driving-pulleys may be driven together by an endless belt 18 or otherwise, and the cables ma.y be arranged to give any desired ratio between the counter-weights and the pull on the cable. Fig. 4 shows the rach-and-pinion thrusting mechanism for operating the door and comprising an electric motor 25, a pinion 23, and a rack 24 fixed parallel to the bottom guide rail. Other counterbalance weights may be rigidly connected to the door so that they tend to tilt it from its lowest position. The lower guide rails may be placed one on each side of the entrance, or there may be a series of them for a wide door.
Patent GB-447970-A (GB)
Title: Cross perforating device for rotary paper working machines
IPC: B26F1/00
Filed: 1936-02-03
Abstract: 447,970. Perforating - machines. EDLER, A., 3A, Torrens Street, City Road, London. Feb. 3, 1936, No. 3142. [Class 31 (ii)] [See also Group XVI] A continuously-moving paper web 1 passing from a printing, folding, numbering, perforating, or other machine to apparatus for forming lines of perforations transversely of the line of feed of the web, is cut into sheets, and the sheets then diverted along a path parallel to the required transverse lines of perforations to the perforating device. As shown, the web 1 is folded by a device 3 and severed into sheets by cutters 4. The sheets are accelerated by feed-rollers 9, 10 to separate them, whereupon feed-rollers 14 move them at right-angles to their previous path past perforating-discs 18.
Patent GB-748223-A (GB)
Title: New khellin-like compounds
IPC: C07D493/04
Filed: 1953-02-04
Abstract: The invention comprises compounds of the formula <FORM:0748223/IV(a)/1> in which R is hydrogen, carboxyl or an alkyl group of up to 3 carbon atoms and the corresponding 41:51-dihydro compounds.  The products are made by subjecting a 5-hydroxy-6-acetylcoumaran of the formula <FORM:0748223/IV(a)/2> to catalytic dehydrogenation to give the corresponding coumarone of the formula <FORM:0748223/IV(a)/3> condensing this with an ester of oxalic acid such as ethyl oxalate or an ester of an acid of the formula RCOOH, where R is an alkyl group of up to 3 carbon atoms, to give a compound of the formula <FORM:0748223/IV(a)/4> which is immediately cyclized when R is an alkyl group to form a compound of the formula I in which R is an alkyl group, or which can be characterized when R is a carbalkoxy group such as COOEt and is cyclized by heating in a solvent with an acid condensing agent, e.g. by heating in a mixture of glacial acetic and concentrated hydrochloric acid, to give a compound of the formula I in which R=COOH, which compound may be decarboxylated by heating in vacuo to give a compound of the formula I in which R is hydrogen.  The dihydro derivatives of the products are obtained by condensing the starting material of formula II by the above procedure, omitting the dehydrogenation step.  Acyl derivatives other than the acetyl derivative may also be used as starting materials in the above syntheses.  In examples: (1) 5-hydroxy-6-acetylcoumaran (formula II) is sublimed in vacuo and passed over palladium charcoal to give 5-hydroxy-6-acetylcoumarone which is condensed with ethyl acetate in the presence of sodium to give 2-methylfurano (21:31- 6:7) chromone; (2) 5-hydroxy-6-acetylcoumaran is condensed with ethyl acetate in the presence of sodium to give 41:51-dihydro-2-methylfurano(21:31-6:7) chromone; (3) 5-hydroxy-6-acetyl-coumaran is condensed with ethyl oxalate in the presence of sodium and the resulting 5-hydroxy-6 - (b - carbethoxy - b  - ketopropionyl)-coumaran is heated with glacial acetic acid and concentrated hydrochloric acid to give 41:51-dihydrofurano - (21:31-6:7) chromone - 2 - carboxylic acid which is decarboxylated on heating to 41:51 - dihydrofurano (21:31-6:7) chromone and (4) 5-hydroxy-6-acetylcoumarone is condensed with ethyl oxalate in the presence of sodium and the 5-hydroxy-6-(b -carbethoxy-b -ketopropionyl)-coumarone is heated with glacial acetic acid and concentrated hydrochloric acid to give furano-(21:31-6:7) chromone-2-carboxylic acid which is decarboxylated by heating to furano (21:31-6:7) chromone.  5 - Hydroxy - 6 - acetylcoumaran (II) is made by catalytic hydrogenation of 5-hydroxycoumaran - 3 - one to give 5 - hydroxycoumaran and condensing this with acetyl chloride in the presence of a condensing agent such as aluminium chloride.  Other acyl derivatives may be similarly prepared.  Example 1 describes the preparation of 5-hydroxy-6-acetylcoumaran by hydrogenating 5-methoxycoumaran - 3 - one to 5 - methoxy - coumarin and reacting this with acetyl chloride and aluminium chloride.
Patent GB-795565-A (GB)
Title: Improvements in or relating to control mechanisms for nuclear reactors
Inventor: LOCKETT GEORGE EDWARD
IPC: G21C7/20
Filed: 1956-02-02
Abstract: 795,565. Dash pots. UNITED KINGDOM ATOMIC ENERGY AUTHORITY. Jan. 28. 1957 [Feb. 2, 1956]. No. 3269/56. Class 108(3) [Also in Group XL(a)] Control elements in a nuclear reactor are positionsd by a rod 11 and releasably connected to a hollow threaded shaft 7. driven through a nut 14. When necessary an electromagnet 8 is de-energized to allow the rod 11 and controlelement carriage 10 to fall freely, its fall being checked by an oil dashpot 33 in which a tapered stem 37 gradually reduces initial free passage of oil between the cylinder 35 and chamber 36. In the later stages of damping a preset relief valve 38 opens and finally flow is restricted through an orifice 40 by a needle 39; when the valve 38 closes again.
Patent GB-1371621-A (GB)
Title: Fibre treatment
IPC: D01F11/16
Filed: 1971-01-28
Abstract: 1371621 Electrolytically treating filamentary carbon COURTAULDS Ltd 28 Jan 1972 [28 Jan 1971] 3358/71 Addition to 1297946 Heading C7B In a process where filamentary carbon is electrolytically treated as an anode using aqueous electrolyte such that nascent oxygen is generated at the surface of the carbon, the filament is passed through the electrolyte surface at least four times. The electrolyte may be 10-20 wt. per cent NaOH. Treated filaments may be embedded in a resin to form a composite material. A tow of filaments 14 passes through bath 4 over positively charged graphite rollers 1, 2 and 3 and non-conducting rollers 6, 7 and 8. The graphite rods 5 act as cathodes.
Patent GB-708111-A (GB)
Title: Improvements in or relating to electronic valves and similar devices
Inventor: UTTING ARTHUR PRESTON
IPC: H01J19/66
Filed: 1950-02-09
Abstract: 708,111. Discharge apparatus. POSTMASTER GENERAL. July 6, 1951 [Feb. 9, 1950], No. 3367/50. Drawings to Specification. Class 39(1) The subject-matter of this Specification is substantially the same as that of Specification 708,112, the valve having flexible pins which are used to secure the adaptor, instead of welding separate flexible leads to rigid valve pins.
Patent GB-348172-A (GB)
Title: Improvements in or relating to the utilization of the heat of steam engine exhaust in hot-houses
IPC: F01K17/02
Filed: 1930-01-31
Abstract: 348,172. Ventilating hot-houses. HAPPEL, O., 45, Konigsallee, Bochum, Germany. Jan. 31, 1930, No. 3376. [Class 137.] The waste heat from a steam-power plant is utilised in a hot-house by conducting the cooling water from the steam condenser through air-heaters provided with blowers in the hot-house. The water from the steam condenser 4, Fig. I, in the power house 1 flows through a pipe 5 and may be diverted partly or entirely to air-heaters 8 within the hothouse 7, or taken wholly to a cooling-tower 6; the water is returned through a cold main 11 to the condenser by a pump 12. The air-heaters have ribbed ivater-tubes of elliptical cross section, and blowers which may discharge the air directly into the hot-house, or into a flue 17 with openings 16. In a modification, the cooling-tower is dispensed with, and surplus hot air allowed to escape through dampers 25, Fig. 8, in air shaft 26. Dampers 27, 28 regulate admission of air to the heaters 8, and blowers 14 drive the hot air into main flues 29 and distributing flues 24 ; in exceptionally hot weather, the air may be drawn through underground flues before reaching the heaters. Sprays 37 may be used to cool the water tubes, or to moisten the air entering the heaters. Specification 19962/89 [Class 137, Ventilation], is referred to. Reference has been directed by the Comptroller to Specification 338,443 [Class 137, Ventilation].
Patent GB-886333-A (GB)
Title: Improvements in book binding machines
IPC: B42C9/00
Filed: 1959-01-30
Abstract: 886,333. Bookbinding machines. FRENCH, L. J. B. R. Jan. 19, 1960 [Jan. 30, 1959], No. 3410/59. Class 16  A bookbinding machine comprises means for laterally displacing or fanning the adhesively coated edges of the sheets of a book or pad throughout their length temporarily to separate the sheets at their edges so as to permit penetration of the adhesive therebetween, the means operating on the edges of the sheets as they are fed past and fanning the sheets first in one direction and then in the opposite direction and progressively throughout their length. Books 1 are fed, spines downwards, by a gripper chain over a roller 3 which applies adhesive to the spine of each book and over a rotating disc 5 having upward projecting saw-teeth 6. Each book passes diametrally over the rotating disc and consequently the sheets are fanned in one direction and then in the other direction by the teeth 6 on opposite sides of the axis of rotation. A resilient blade 8 engages the spine edges adjacent to the disc 5 to encourage the adhesive to pass between the sheets as they are separated.