baber/WOPTO huggingface dataset:
Patent GB-360534-A (GB)
Title: An improved water flow timing valve
IPC: F16K21/16
Filed: 1930-08-25
Abstract: 360,534. Water-flow timing valves. ELDER, D., 2533, Durant Street, Berkeley, California, U.S.A. Aug. 25, 1930, No. 25321. [Class 135.] Valves actuated by rotary motors.-A water-flow timing valve for use with garden hose &c. comprises a valve-setting cam 23.which.is manipulated by a knurled disc 35 to give the valve 14 a predetermined initial opening. The water flow from the inlet 7 to the outlet 8 operates a tangential type water wheel 10 which is geared through a triple-stage slow-thread worm gear arrangement 11, 20 and ball clutch to the cam shaft 19. After the prearranged flow the spindle 14 of the valve drops on to the recess 39 of the cam and the valve closes. The casing 1 is of circular shape with removable covers 2, 3 for access.
Patent GB-1240910-A (GB)
Title: Replenishment apparatus for photographic processor
Inventor: FRUTIGER THOMAS W
IPC: G03D3/06
Filed: 1969-05-19
Abstract: 1,240,910. Photo-electric control of film processing. EASTMAN KODAK CO. May 19, 1969 [May 23, 1968], No. 25358/69. Heading G1A. [Also in Divisions G2 and G3] In a photographic film processor, the transparency of the developed and fixed film is monitored photo-electrically to provide an electrical signal which is integrated and used to control replenishment of the developer and fixer solutions when the integrated signal becomes greater than a certain value. The film F is passed through tanks for the developer 24, fixer 26 and washing liquid 28, water removal section 30, and drier column 32 before passing through the photo-electric monitoring apparatus 38. Here, a lamp 58 illuminates the film, whose degree of development, or density, is monitored by first photo-cell 66, Fig.3, while the lamp intensity variations are compensated for by the use of second photo-cell 68 which receives light direct from the lamp via light guide 70. The control circuit, Fig. 3, includes a differential amplifier 76, receiving the output of the two cells 66, 68 which are shown as photo-voltaic selenium cells, but photo-conductive or photoemissive cells could be used. Calibration of this part of the circuit is performed using meter 80. With a clear piece of film, tap 74 is adjusted to give minimum deflection. With a completely black piece, the amplifier 76 gain is altered by resistor 78 to give maximum deflection. The amplifier output is integrated by amplifier 84 in association with capacitor 86. When the charge builds up so that comparator 88 produces an output, transistor 96 is triggered to conduct and relay 106 is actuated. This causes (via contacts 110, 112) discharge of capacitor 86, thereby initiating a new integration process, and (via contacts 114, 116) energization of stepping motor coil 120, which motor steps on one step (stepping may alternatively be effected by use of a flip-flop circuit). The stepping motor carries a cam such that after a predetermined number of these integration processes and thus motor steps, a contact 130 is closed in the circuit of relay 134, which when energized causes timers 46, 48 to be actuated. These control pumping of developer and fixer into the respective chambers 24, 26 via flowmeters.
Patent GB-388832-A (GB)
Title: An improved process for bleaching vegetable substances
IPC: D06L4/15
Filed: 1931-09-10
Abstract: Green vegetable substances, or articles made therefrom which contain chlorophyll, are bleached with organic peroxides such as benzoyl or acetyl peroxide in the presence of organic solvents therefor which are practically inert to the peroxides, such as benzine, benzene, toluene, xylene or its homologues, lower aliphatic alcohols, benzyl alcohol, acetone, methyl ethyl ketone, cyclohexanol and its homologues.  The process may be combined with the usual bleaching processes such as with hydrogen peroxide, hydrosulphites or oxidizing agents such as potassium permanganate.  A hat body of Pandan-split or "Bowen" reed may first be bleached with hydrogen peroxide, then treated according to the invention and finally treated in an aqueous hydrosulphite bath with or without the addition of sodium pyrophosphate.  In examples: (1) Pandan-split plait is treated with a solution of benzoyl peroxide in gasoline followed by bleaching in the usual way with aqueous hydrogen peroxide and hydrosulphite.  (2) A "Bowen" hat body bleached with aqueous hydrogen peroxide rendered alkaline with sodium pyrophosphate is treated with a solution of benzoyl peroxide in ethyl alcohol and finally fully bleached with aqueous sodium hydrosulphite.  (3) Vegetable materials such as Ruscus, Adiantum Cycas, moss, beech or laurel leaves, or pine twigs, intended for decorative purposes, are treated in a solution of benzoyl peroxide in ethyl alcohol and benzene or acetyl peroxide in benzene and ethylene chloride and finally bleached, dyed and finished.  Specification 268,325, [Class 15 (i), Dyeing &c., Apparatus for], is referred to.
Patent GB-386600-A (GB)
Title: Improvements in mirrors for surgical or medical purposes
IPC: A61B1/247
Filed: 1932-09-13
Abstract: 386,600. Surgical mirrors. PAPE, H., Blumenau St. Catharina, Brazil. Sept. 13, 1932, No. 25494. Convention date, Dec. 30, 1931. [Class 81 (ii).] In a surgical or medical mirror of the type used for insertion into body cavities, a transparent protecting disc is arranged in front of the mirror which consists of polished metal. A metal mirror 1, Fig. 1, is held together with a non- splintering glass disc 2, by a frame 3 carrying a handle 4. The mirror can be concave, and the protecting glass either concave or plane, or in the form of one or more lenses when an enlarged image is obtained. The mirror 1 may be integral with the handle 4, Fig. 4, and the protecting disc 2 may be detachably secured by means of a screw-threaded ring 6 and rubber washer 7. The protecting disc may be of celluloid or like material and the outer surface may be coated with lacquer to prevent condensation of moisture.
Patent GB-518747-A (GB)
Title: Improvements relating to rock boring bits
IPC: E21B10/44
Filed: 1938-08-31
Abstract: 518,747. Drills. CROFTON & CO. (ENGINEERS), Ltd., C., and MANN, R. W. Aug. 31, 1938, No. 25521. [Class 83 (iii)] A bit for use in boring holes in stone or coal in quarrying or mining operations comprises a scroll 20 the extremity of which is formed with a central spigot 24 screw threaded for the reception of a nut 38, a reamer bit 10 formed with a socket 30 to fit the spigot and with a transverse groove 32 to fit the extremities 22 of the ribs of the scroll and a pilot bit 16 integral with or secured to the nut. In the form shown, the reamer bit has two blades 12 to cut out the full diameter of the hole and two shorter blades 14 adapted to occupy the annular space between the pilot bit 16 and the inner edges of the blades 12. The scroll may be provided with lateral ribs 28 adapted to fit within a groove 34 beneath the blades 14 of the reamer. The reamer may have a core drilled for the supply of water to the work.
Patent GB-678121-A (GB)
Title: Improvements in preparation of esters of diene carbinols
IPC: C07C17/08
Filed: 1950-10-20
Abstract: Lower fatty acid esters of genaniol (or nerol) and linalool are obtained by the action of anhydrous hydrogen halide on myrcene or on myrcene mixed with limonene obtained from a b -pinene pyrolysate, whereby addition at one double bond occurs, followed by reaction with an alkali metal fatty acid salt.  The initial product is mainly geranyl (or neryl) and linalyl halides with small quantities of a tertiary halide, easily decomposed.  The main products are allylic isomers, allyl re-arrangement taking place during the reaction, and also being possible to effect by known methods.  The second part of the reaction on each isomer gives both (all) esters, the proportion of allyl re-arrangement varying according to the conditions.  In examples, myrcene or above-described mixtures thereof are treated with hydrogen chloride or bromide followed by sodium acetate to give mainly geranyl acetate, with some linalyl acetate and by-products.
Patent GB-628215-A (GB)
Title: Improvements in and relating to liquid-tight cartons
IPC: B65D3/06
Filed: 1947-09-19
Abstract: 628,215. Cartons for liquids. STEVENSON & SONS. Ltd., H., and ROSENFELD, E. H. Sept. 19, 1947, No. 25584. [Class 66] A carton for oil &c. is made by rolling a blank which has a metallic composition or aluminium foil &c. over part of its surface, into cylindrical, frusto-conical, or like body completely metallized externally and having cemented edges overlapping at the seam. The top is closed by a dished paper disc 12 .covered by a dished metal cap 13 pressed and rolled to secure it to the body. The interior is then coated, as by spraying with a gelatine-base varnish; a little varnish and/or pressure-sensitive glue is then run into a groove in the base 15 which is secured by rolling &c. after filling the carton. The dished metal cap may have an arcuate slot defining a metal tongue so that the paper disc may be cut, and the tongue pressed inwardly to provide a pouring opening.
Patent GB-898675-A (GB)
Title: Electrically controlled clutch
IPC: F16D27/06
Filed: 1958-08-11
Abstract: 898,675. Friction clutches. EATON MANUFACTURING CO. Aug. 11, 1958 [Aug. 26, 1957], No. 25685/58. Class 80 (2). [Also in Group XXXVII] In order to drive an output member at a constant speed from a variable speed input member, an electromagnetic friction clutch is energized in pulses, the intervening disengaged periods preventing overheating of the clutch. The clutch may be used to drive a fan or the compressor of a refrigerating or air conditioning unit from a vehicle engine. A clutch disc 13 of magnetic material is splined to a sleeve 15 on an input shaft 11, and engages the driven disc 14 when a coil 22 is energized. Current is supplied to the coil through a brush 45 and split ring 43 via a centrifugal switch 61 mounted on the driven member. In one embodiment of the switch a resilient arm 64 is urged towards a normally closed position in engagement with a contact 62, and is opened at a predetermined speed of the driven member by the action of centrifugal force on the arm. The free end of the arm is formed as an armature 68 co-operating with a permanent magnet 69 so that when the contacts are open the armature 68 engages the magnet and the switch is held open until the speed of the driven member has fallen sufficiently for the resilient bias of the arm to overcome the centrifugal force on the arm and the attraction of the magnet. Separation of the clutch discs 13, 14 on de-energization of the coil 22 is effected by spring 70 and provides opportunity for cooling by circulating air or other coolant between the discs. In another embodiment the switch is held closed by a magnet so that again the switch opens at a greater speed than that at which it closes, and other constructions of the switch are described.
Patent GB-361446-A (GB)
Title: Improvements in tube rolling and reducing mills
IPC: B21B35/02
Filed: 1930-08-28
Abstract: 361,446. Rolling tubes. WELLMAN SEAVER ROLLING MILL CO., Ltd. and SMITH, S., Victoria Station House, Victoria Street, London. Aug. 28, 1930, No. 25758. [Class 83 (iv).] Each set of a series of tube reducing rolls a<1> .. a<5> is followed by a set of tension rolls b, driven at a higher speed to pull out the tube and prevent it from thickening during reducing, a slipping clutch r being provided to yield in case of excessive tension of the tube. The gear drives for each set of rolls are coupled together by chains o from the power shaft h, one or other of the chains being r e - moved to alter the gear ratio as shown by the different sized sprockets.
Patent GB-1293193-A (GB)
Title: Process for preparing carboxylic acids
IPC: C07C51/12
Filed: 1970-05-28
Abstract: 1293193 Catalyst composition JAPAN GASCHEMICAL Co Inc 28 May 1970 [28 May 1969 (2) 30 Dec 1969] 25829/70 Heading B1E [Also in Division C2] Catalyst compositions comprising a metal of Group IIb or VIII of the Periodic Table are used in the preparation of a carboxylic acid R. COOH wherein R is a saturated or unsaturated, acyclic or cyclic aliphatic hydrocarbon group, or an acyl, aralkyl, or heterocyclic group, by heating a formic acid ester, H. COOR in the presence of carbon monoxide, and an organic polar solvent which is an amide, nitrile, ketone or heterocyclic amine. The catalyst may be the metal per se or a compound which is an organic acid salt, a #-diketone or #-diketo acid ester complex, a hydroxide, a carbonate, a bicarbonate, a nitrate, a sulphate, an oxide, a salt of a halogen oxyacid, a complex of an organic orium compound or a halide or when the metal is from Group VIII a carbonyl compound. An optional further ingredient may be elemental halogen, a hydrohalic acid, an alkali or alkaline earth metal halide or a halogen oxyacid or an alkali or alkaline earth metal salt thereof. Examples describe the use as catalysts of cobalt iodide with methyl acetate or formate, cobalt acetate and iodine, cobalt acetate and potassium iodide, cobalt carbonyl and iodine, nickel iodide, cobalt bromide, cobalt carbonyl, mercuric iodide, mercuric acetate and potassium iodide, mercurous iodide, metallic mercury and iodine, cobalt carbonate and potassium iodide, cobalt hydroxide and magnesium iodide, rhodium chloride and hydrogen iodide, di[tetraethyl-ammonium]- cobalt dibromide diiodide, iron iodide, diethyl acetone-dicarboxylatecobalt and potassium bromate, nickel bicarbonate and magnesium iodate, nickel nitrate and magnesium iodide, cobalt oxide and iodic acid, cobalt sulphate and potassium iodide, ferric chloride, cobalt iodate, mercury bromide, mercury acetate, zinc carbonate and iodine, and mercuric iodide, with various solvents.
Patent GB-454615-A (GB)
Title: Improvements in or relating to the control of internal combustion engines
IPC: F02D9/00
Filed: 1935-09-18
Abstract: 454,615. Regulating. HAPKINS, D. N., 458, South Spring Street, Los Angeles, U.S.A. Sept. 18, 1935, No. 25895. [Class 7 (vi)] The flow of combustible mixture to the engine cylinders due to the high degree of vacuum caused in the intake manifold by closure of the throttle valve is reduced or prevented by an auxiliary throttle valve which is automatically closed by the action of the vacuum on a piston in a cylinder so as to move this piston to transmit the vacuum to a second piston and cylinder device connected to the auxiliary valve. The Figure shows the usual throttle valve 11 controlling the flow of mixture to the intake manifold 13, the auxiliary valve 16 being mounted on a shaft 15 connected by rods 40, 39 to a piston 35 in a cylinder 33. A pipe 34 connects the cylinder 33 to another cylinder 17 in which operates a piston 23 connected to a valve 25 and subjected to the vacuum in the intake 13 by a connection 20. A valve 28 on the cylinder 17 is connected by a spring 30 and rod 31 to the throttle 11, so that when this throttle is opened the valve 28 is closed. When the throttle 11 is closed, the valve 28 is released and air is admitted above the piston 23. At the same time the vacuum produced in the intake 13 acts on the lower side of the piston 23, so that this piston is moved downwards against the action of a spring 24, opening the valve 25 and allowing the vacuum to act through a passage 22 and the pipe 34 on the piston 35, which is thereby moved to the left against the action of a spring 36, so as to close the throttle 16. As the vacuum reduces due to the slowing down of the engine, the piston 23 is moved upwards by the spring 24 to close the valve 25, and the spring 36 moves the piston 35 to the right to open the throttle 16. This action is assisted by gravity, as the throttle 16 is pivoted eccentrically. The throttle 16 also has an opening 16a to allow mixture to pass for idling. A third piston subjected to the vacuum in the intake may be provided, with a lost-motion connection to the throttle 16 so as to limit its opening.
Patent GB-1497023-A (GB)
Title: Gas pressure measurement nipple for gas appliances
IPC: F16L41/00
Filed: 1976-06-23
Abstract: 1497023 Junction pieces NEFF-WERKE CARL NEFF GmbH 23 June 1976 [24 June 1975] 26031/76 Heading F2G A nipple 3 for fitment into a gas cock body 1 having a feed connection 8 and a jet 2, comprises a screw threaded shank 14 which screws into the body 1 and a hollow stub projection 13 with an 0-ring seal 7 retained in a collar 12 thereon, and the stub projection 13 being closed by a closure screw 4 with an 0-ring 6. The nipple may be used for measurement of gas pressure within the body 1 and to this end a measurement orifice 5 is provided. In use the closure screw 4 is removed and the nipple 3 screwed out of the body 1 sufficiently to allow fitting of a measurement hose (not shown) to the projection 13.
Patent GB-688073-A (GB)
Title: Hydraulic control valve with automatic hold and release
IPC: F16K11/07
Filed: 1950-10-26
Abstract: 688,073. Hydraulic valves. BENDIX AVIATION CORPORATION. Oct. 26, 1950 [Oct. 31, 1949], No. 26156/50. Class 135. A hydraulic control valve comprising a valve member movable in a body member and manually operable against resilient means to actuate a doubleacting jack is held in its operative position by a spring detent carried by one of the members and a pair of relatively movable elements on the other member which are normally separated to provide a gap therebetween engageable by the detent and movable toward each other to close the gap by pressure responsive means on the pressure in the valve inlet exceeding a predetermined value to return the valve member to its neutral position. The control valve 14, Fig. 2, comprises a piston member 24 slidable in a body member 22 and manually movable from its neutral position shown by a lever 15 against a return spring 50 tocontrol supply, exhaust and motor parts 25 ... 28. The piston is formed with transverse bores 33, 31, 65 communicating with an axial bore 32 slidably mounting a spring-loaded piston valve 34 connected by a pin 35 to a sleeve element 36 slidable over an extension 24e of the piston 24. A pin 40 connects the extension 24e to a surrounding sleeve element 41 defining a gap 45 between the sleeve elements which co-operates with spring detents 48, 62 carried in annular grooves 49, 63 in the valve body when the valve is in its neutral position. On anti-clockwise movement of the lever 15, the piston 24 moves to the right to supply the left-hand end of the jack 10 with pressure liquid and connect its other end to exhaust, the sleeves 36, 41 moving with the piston 24 until the gap 45 reaches the detent 48 which engages the gap and holds the valve in its operating position and permits the release of the lever 15 by the operator. On completion of the jack stroke, pressure builds up in the inlet 25 to overcome the spring 39 and move the piston valve 34 to return the liquid to exhaust through passages 32, 65, 66 and move the sleeve 36 to abut the sleeve 41, whence the detent 48 is urged into its groove 49. The piston 24 is then returned to its neutral position by its spring 50. Conversely, on clockwise movement of the lever 15, the detent 62 is forced out of its groove 63 to hold the valve in its operative position and released therefrom on movement of the valve piston 34 on the predetermined pressure again being reached in the inlet 25.
Patent GB-284011-A (GB)
Title: Improvement in conveyor apparatus
IPC: B65D19/42
Filed: 1926-10-20
Abstract: 284,011. Romine, R. T. Oct. 20, 1926. Portable railways ; systems. - Travelling portable platforms B with depending leg supports are moved along antifriction ways A near ground level made of portable sections laid upon the floor of the plant. The platforms are deposited upon the ways and removed therefrom by lifttrucks L. The apparatus may be used for assembling or for packing automobile parts taken from racks or platforms B<1>, C, and packing cases may be built upon the portable platforms as they pass along the ways. As shown, the antifriction ways A are made of sections comprising angle members 10, 11 which support bearing rollers 12, the angle 10 extending upwards at 13 to guide the platforms. Some of the rollers may be driven, or they may form gravity ways. The ways may include curved sections and may be secured end to end and held in position by blocks nailed to the floor.
Patent GB-1508047-A (GB)
Title: Aluminium hydride oligomer derivatives and process for the preparation thereof
IPC: C07F5/06
Filed: 1975-06-19
Abstract: 1508047 Polyiminic hydrides containing aluminium SNAMPROGETTI SpA 19 June 1975 [1 July 1974] 26212/75 Heading C2C Oligomers, suitable for use as polymerization catalysts, have the general formula in which R is a hydrocarbon radical, X and Y are hydrogen or halogen atoms bound directly to aluminium, y is 1-10 and (x+y) is not higher than 10. The oligomers tend to comprise rings of the general formulµ in which the free valencies may be partially or totally employed in linking hydrogen or halogen and/or may be utilized in the fusion of any of the rings to rings of the general formulµ The oligomers may also have a three-dimensional or open cage structure resulting from the fusion of the above ring systems with imine moieties and 4 or 6 member chains and having, e.g. the formulµ Those oligomers where all of X and Y are hydrogen are made by reacting an aluminium hydride complexed by a Lewis base with a primary amine of formula R.NH 2  for a sufficient time to produce the oligomer. The aluminium hydride may be produced in situ from lithium aluminium hydride and a Lewis acid or a Bronsted acid. Those oligomers wherein Y is halogen are made by reacting the above reaction products with an aluminium halide.
Patent GB-795480-A (GB)
Title: Apparatus and method for classifying sheets according to length
IPC: B07C5/10
Filed: 1955-09-13
Abstract: 795,480. Photo-electric control systems. UNITED STATES STEEL CORPORATION. Sept. 13, 1955 [May 11, 1955], No. 26228/55. Class 40 (3). Sheets longer or shorter than an acceptable length are detected by gauging apparatus which as described is photo-electric and which registers over or undersized sheets on a timer so that such sheets are diverted when they reach a deflector spaced along the conveyer. As shown, metal strip is unwound from an uncoiler 10, passes through a roller leveller 12, and is cut into strips by a flying shear 13, the strips then passing over a conveyer 14 where they are gauged and into one of prime or reject boxes 17, 18 according to the position of deflector 15. The gauge comprises a plate 20 (Fig. 2) in which are three apertures 21, 22, 23. Apertures 22, 21 are spaced in the direction of movement of the plate to be gauged and their leading edges are accurately machined. Aperture 23 is further spaced and has its trailing edge machined. Photo-cells 28, 29 receive light from a source 24 through apertures 21, 22 respectively, while a further cell 20 receives light from a source 26 through aperture 23. The distance between the machined edges of slits 21, 23 represents the maximum permissible sheet length and the distance between slots 22, 23 the minimum. In operation, as the trailing edge of the sheet uncovers cell 28, amplifier 31 produces a positive signal which causes a " flip-flop " to generate a negative signal which continues until the trailing edge uncovers cell 29 which then generates a positive pulse and the negative flip-flop output pulse terminates. If the positive pulse produced when the trailing edge of the sheet passes slot 23 occurs within the period of negative flip-flop output pulse a clipper amplifier 35 carrying both the pulses is maintained non-conductive; if outside, the clipper amplifier conducts and acts through pulse lengthener 37 to record on a timer 36 driven at a speed proportional to that of the moving strip the fact that a defective sheet has been rejected. At the correct time deflector 15 operates to deflect the imperfect sheet. The machined edges of apertures 21, 22, 23 may be adjustable. Specifications 673,140 and 784,142 are referred to.