baber/WOPTO huggingface dataset:
Patent GB-185962-A (GB)
Title: Improvements in kettles, saucepans, boilers and the like domestic utensils
IPC: A47J27/022
Filed: 1922-01-31
Abstract: 185,962. Benbridge, J. T. Jan. 31, 1922. Heating - surfaces increasing.-A cen tral strip of the bottom of a kettle saucepan, or other domestic utensil is formed with deep corrugations B, passing from side to side of the vessel, in order to increase the heating effect.
Patent GB-488271-A (GB)
Title: Improvements in and connected with pumps
IPC: F04B1/02
Filed: 1936-09-14
Abstract: 488,271. Compressors; reciprocating pumps ; valves. CUVELIER, P. A. I. Sept. 14, 1936, Nos. 25039 and 25040. Void. Convention dates, Sept. 16, 1935 and June 30, 1936. [Classes 8 (i) and 102 (i)] [Also in Group XXIX] In a pump or compressor the pistons 2, 2a, Fig. 1, of opposed cylinders are connected by a rectangular frame 4, which is connected to a crank-shaft by means of return connecting- rods. The valve chamber 6 comprises a suction chamber arranged between the cylinders, and a discharge chamber which is disposed laterally.. The cylinders may be double-acting, opposite ends of the cylinders being connected by means of passages 14, 15. The valves may be doublebeat lift valves, as shown. In a modification, flap valves are employed. In this case a rectangular spring leaf 36, Fig. 8, secured by screws 46a, controls both discharge ports 23. The spring may carry rubber facings 36a.. Alternatively, or in addition, rubber valve seatings may be employed. Fig. 10 shows a pump applicable for pumping either liquids or gases. The discharge chamber 110 is arranged laterally, and is removable, the suction valves 106, 106<1> being accessible through the discharge ports 126. The suction valves may be lift valves, as shown, with rubber seatings 108. The pistons 101, 101<1> are single-acting, and work through stuffing- boxes 103, each containing two cup leathers. 104. The latter may have hard wearing surfaces with softer backings. The stuffing- boxes are supplied with lubricant through pipes 115, 117, 122 from a cylinder 141, the piston 113 of which is acted on by compressed air, supplied through a pipe 112 from a tank 111 into which the pump discharges. The tank 111 and the discharge valve chamber 110 contain water. When the apparatus is used as a compressor, water is supplied to the suction pipe 121 by means of a pipe 116, and an auxiliary suction valve controlled by the governor is employed.
Patent GB-795164-A (GB)
Title: Treatment of ores
IPC: C22B34/12
Filed: 1956-08-16
Abstract: Titaniferous ore containing iron, at least 50 per cent of which is in the form of ferric compounds, is treated to remove the iron by leaching in hydrochloric acid at a temperature of at least 175 DEG C. and at a pressure sufficient to maintain a liquid pool of hydrochloric acid.  The ore, which may contain 35-90 per cent of TiO2, is preferably finely crushed and leached for several hours with concentrated acid, e.g. containing 25-40 per cent HCl, preferably with agitation.
Patent GB-338584-A (GB)
Title: An improved process for extracting glue and gelatine from chrome leather
IPC: C09H3/00
Filed: 1929-08-17
Abstract: 338,584. British Glues & Chemicals, Ltd., and Drew, R. B. Aug. 17, 1929. Gelatine and glue.-Glue and gelatine are extracted from chrome leather cuttings by percolation with a solution of an alkaline earth. The solution is caused to percolate repeatedly, in one cyclic direction in the presence of an excess of alkaline earth, at such a rate that the acid extracted from the leather neutralizes sufficient alkali to maintain the desired alkalinity. A pH of 8 to 8.5 is suitable, and a temperature of 105‹C. for thick cuttings. Undesirable soluble matter such as salt is removed by a preliminary extraction at room temperature. Leather cuttings mixed with about 3 per cent of magnesia are introduced into a digester a, fitted with a grating b. Cold water is supplied from a pipe g to the bottom of the digester until the leather is covered, and the pump l is then reversed to circulate the water which is withdrawn through pipes k and m and returned by the in let e, the three-way valve p being suitably manipulated. The solution containing magnesia and soluble matter in the leather, is withdrawn through a pipe k and m and returned by the inlet e, the sary. Hot water is now supplied to the digester from a pipe h and circulated as before. A heating coil c maitains the temperature, at 90 to 100‹C., and when the glue content reaches 3 per cent the solution is drawn off at r. Successive quantities of hot water are introduced and circulated in this way until all the glue is extracted. The second and third extractions may be effected at 102‹ C., and the final one at 105‹ C. Solutions having a low glue content may be fed to another digester to utilize any residual alkalinity. The leather acts as a filter to separate the insoluble chromium oxide formed, and is loosened by reversing the direction of circulation for short periods, the valve o being opened and the inlet e closed, and loss of solid matter prevented by a screen x over the outlet f. The glue liquor after addition of hydrogen peroxide may be filtered and concentrated. Baryta or other alkaline earth may replace the magnesia.
Patent GB-709956-A (GB)
Title: Spray drying apparatus
IPC: B01D45/02
Filed: 1951-10-29
Abstract: <PICT:0709956/III/1> <PICT:0709956/III/2> A spray drying tower, e.g. for soaps and detergents, comprises a vertical passage for sprayed material surrounded by a gas distribution chamber near its foot, this chamber having imperforate side and top walls, except for a connection with a gas duct, and a bottom wall provided with many small perforations such that the drop in pressure of the gas as it flows through each perforation is greater than the drop in pressure during lateral flow in the gas distribution chamber between this perforation and the gas duct.  In Fig 2, wet material is sprayed by nozzles 21 down a cylindrical passage defined by a wall 26 concurrently with hot gases introduced at the top of the tower via a conduit 17. Dried material falls into a core 28 and waste gases are evacuated via an annular duct 48 surrounding the foot of the wall 26 and twin exhaust conduits (not shown).  The duct 48 has a bottom wall 52 in the form or a plurality of removable perforated sector plates. The apparatus is cooled by air admitted via a duct 47 flowing through a passage 37 surrounding the cone 28 thence through holes 39 and a passage 41 into an outlet duct 46.  The preheated air from duct 46 may be passed to the source of drying gases.  In Fig. 10, wet material is sprayed down a cylindrical passage defined by a wall 81 counter-currently with hot gases introduced via a conduit 88 and a duct 85, similar to duct 48 of Fig. 2, having a perforated bottom wall 87.  The hot gases are evenly distributed by a plurality of adjustable vanes 89 separately mounted on shafts 91 for rocking about a horizontal axis.
Patent GB-1470769-A (GB)
Title: Soldering tools
IPC: B23K3/03
Filed: 1974-06-25
Abstract: 1470769 Supply systems for electric soldering apparatus A L ROYSTON 25 June 1974 [29 May 1973] 25354/73 Heading H2H The generation of heat by a soldering tool which comprises a heating coil 8 is regulated by means of a diode 9, connected between the coil 8 and an A.C. source, and a resiliently biased switch 11 connected in parallel with the diode 9 so that by operation of the switch either half wave or full wave alternating current passes through the heating coil 8. The switch 11 may be operated by a button located in the handle of the soldering tool. Alternatively if the soldering tool is associated with a rest or cradle, the switch may be actuated when the tool is placed in the rest.
Patent GB-1026572-A (GB)
Title: An improved submerged arc welding flux
Inventor: ROBERTS LEA FRANK
IPC: B23K35/362
Filed: 1963-06-26
Abstract: A submerged arc flux for the automatic welding of alloys of Cu with Ni, Si or Al consists in proportions by weight of: .MnO.0-15% .SiO2.25-50% .CaF2.3-15% .CaO.20-45% .MgO.0-25% .Al2O3.0-15% .NaF.0-6% The electrode wire used will match the material to be welded and it may also be a cored wire of similar construction to that disclosed in Specification 949,587 in which the core flux consists of 6% CaF2 and 94% CaSiO3 (wollastonite) with alloying elements and sodium silicate as a binder.
Patent GB-747687-A (GB)
Title: Improvements in and relating to motor equipment for electrically driven winding and like gear
Inventor: PETCH THOMAS HAYES
IPC: B66C13/24
Filed: 1953-09-15
Abstract: 747,687. Control of D.C. motors. BRITISH THOMSON-HOUSTON CO., Ltd., Sept. 3, 1954 [Sept. 15, 1953], No. 25522/53. Class 38(3) The armature M of a winder motor is supplied through a controlled' rectifier AR and is adapted to be connected in parallel with a number of resistors SR1- SR4, means being provided for the simultaneous regulation of the output of the rectifier and the value of the parallel resistance. As shown, the sequential operation of a number of contactors S1C-S4C having contacts S1-S4 in series with resistors SR1-SR4 is effected by a master controller MC which is also coupled to an induction regulator 1R in the control circuit of the rectifier. Progressive movement of control handle DL from the "off" position increases the rectifier output and, at the same time, increases the resistance in parallel with the motor, until all the resistors are open-circuited and control of the motor is dependent upon the rectifiers output alone. In another arrangement the rectifier is controlled by means of a stepped resistance in its grid circuit so that the increase of rectifier voltage occurs by finite amounts at given positions of the master controller. When the back-electromotive force of the motor exceeds the rectifier voltage, the circulation of current in the armature and parallelconnected' resistors affords braking operation. The field winding MF of the motor is connected to a cross flux exciter E having a control winding CW adapted for reversible energization according to the direction of operation of the master controller, as well as an opposing winding FW providing negative feed-back. In an automatic winder, wherein the motor is controlled by means differentially responsive to the actual speed of the winder and to a reference value which is cam-adjusted in accordance with the winder-position, the differential means may operate the master controller or otherwise provide control of the motor in the manner described.
Patent GB-272741-A (GB)
Title: Method of and means for dehydrating fruits and vegetables
IPC: F26B25/00
Filed: 1926-10-13
Abstract: 272,741. MacPherran, C. C. Oct. 13, 1926. Endless-band conveyers.-Fruit &c. to be dried is fed through a hopper 3 into the airt i g h t compartments formed by the walls of a preheating compartment 10 of the drying oven 1 and the flexible strips 8 of the conveyer 5 by which the fruit is fed into the drying compartment of the oven. The fruit is conveyed through the drying compartment upon superposed endless bands in countercurrent to heated air supplied through a duct 36; the speeds of the bands decreasing from the uppermost downwards. The humidity and temperature of the air are indicated by hygrometers 41 and thermometers 40. Fruit juice may be introduced into the drying compartment through an atomizer 60.
Patent GB-818699-A (GB)
Title: Improvements in or relating to devices for adjusting the injection timing of fuel injection internal combustion engines
IPC: F02D1/00
Filed: 1957-08-15
Abstract: 818,699. Regulating. BOSCH G.m.b.H., R. Aug. 15, 1957 [Aug 22, 1956], No. 25730/57. Class 7(6) [Also in Groups XXVI and XXIX] Apparatus for adjusting the fuel injection timing of an internal combustion engine comprises a coupling for adjusting the angular relationship between the injection pump shaft and its driving shaft and movable by a spring-loaded servopiston sensitive to variations of pressure in a pipe 7 having a governor controlled leakoff valve 56, the governor also controlling directly the quantity of fuel delivered by adjustment of a lever 23. The governor consists of a dished member 36 urged towards the left by a spring 42 and rotatable by a chain-driven 'sprocket 34. Balls 37 guided by a cage 38 are rotated with the member 36 and react against a face of the sprocket 34 to increase the force applied to the valve 56 through an abutment 32 and pin 33 as the speed of the engine increases thereby to increase the pressure in the pipe 7 and cause movement of the servo-piston. When a predetermined speed is reached the axial component of the centrifugal force on the balls 37 compresses the spring 42 to move members 52, 21 and the lever 23 to reduce the fuel supply. The loading of the spring 42 is adjustable by a lever 50. The pressure fluid in the pipe 7 is fuel delivered by a pump which supplies the injection pump and provides a surplus for circulation through the pipe 7. In a modification, the valve 56 is formed as a piston valve which is opened by movement of ports beyond the end of a bore in which the valve is slidable.
Patent GB-792313-A (GB)
Title: A vernier device
IPC: G01B3/00
Filed: 1954-09-06
Abstract: 792,313. Measures of length; gauges. KOOPERATIVA FORBUNDET EKONOMISK FORENING. Sept. 6, 1954 [March 23, 1954], No. 25846/54. Class 106 (2). [Also in Group XVIII] A vernier device comprises a series of pins which are brought en masse into contact with a series of apertures or the like spaced in vernier relation with the pins so that one pin only enters an aperture to give the corresponding reading. The device may be applied to a rule 41 (Figs. 1, 2) having a series of apertures 42 against which numbered spring-loaded pins 46 are applied by pressing inwardly a bar 51 carrying the pin holder 47 on rods 50, the rule being longitudinally slidable between rollers 43, 44. A height gauge (Figs. 9, 10) may comprise two sliding scales 112, 121, the former having apertures 115 for the pins 117 carried in a casing 111 secured to the stand 110, and bearing units markings 114. The pins are brought against the apertures by a cam 122 acting on a roller 123, the cam being attached to the rule 121 which is slid downwards in taking a reading. The downward movement of the rule 121 is limited by a stop 124 secured to it, engaging the pin which has passed through an aperture, the rule 121 then being read in a window 116. The device is also described as applied to means for gauging workpieces on a machine, and to weighing-machines (see Group XVIII).
Patent GB-602760-A (GB)
Title: Improvements in or relating to milling or the like rotary cutters
IPC: B23C5/14
Filed: 1945-10-04
Abstract: 602,760. Milling-cutters. BULL, A. L. Oct. 4, 1945, No. 25904. [Class 83 (iii)] A milling-cutter in which the cutting portion extends radially beyond the periphery of the cutter body is characterised ir that a cutting face of each tooth of the cutter tra verses a part of the work piece which, substantially is not traversed by the cutting face of another tooth of the cutter. The teeth 8 of the cutter carry portions or projections 9 staggered to cover the whole tooth periphery in one revolution. The cutting faces of the projections overlap slightly so that the cutter shown ultimately cuts a semicircular groove.
Patent GB-717308-A (GB)
Title: Improvements relating to disc brakes for vehicles
Inventor: BERROWS PERCIVAL WALTER
IPC: F16D55/2255
Filed: 1952-10-16
Abstract: 717,308. Disc brakes. GIRLING, Ltd. Oct. 12, 1953 [Oct. 16, 1952], No. 25936/52. Class 103(1) In a "spot-type" disc brake, friction pads mounted in opposed bores in a fixed housing 10 are adapted to be urged into engagement with the opposite faces of a rotatable disc 11 by means of a floating lever 15 lying on one side of the housing and pivotally connected at spaced points to a plunger 16 bearing on the adjacent friction pad and to one end of a member 20 extending slidably through the housing and having at its other end a parallel return portion 21 which bears on the other friction pad. In operation, when the floating lever 15 is pulled at its free end in the direction of the arrow, the pivotal connections of the lever to the plunger 16 and the rod 20 cause the plunger and the return portion 21 of the rod to be drawn towards each other to urge friction pads 12 into braking engagement with the opposite faces of the disc 11. An adjustable stop 24 is provided for the lever in the " off " position of the brake; the lever normally being held in engagement with the stop by a spring (not shown). Annular seals 23 prevent leakage of hydraulic fluid past the plunger 16 and the portion 21 of the rod 20; the portion 21 need not be an integral part of the rod 20 but may be a separate member connected by a cross-head or the equivalent to the rod 20. The illustration shows only one pair of opposed cylinders and friction pads which may also be actuated hydraulically. However, two or more pairs of hydraulically actuated angularly spaced cylinders and friction pads may be arranged in the same housing; in which case, the mechanical actuating means will be applied to one pair of pads for parking purposes. Specification 688,382 is referred to.
Patent GB-537857-A (GB)
Title: Pest control compositions
Filed: 1939-09-18
Abstract: 537,857. Synthetic resins. IMPERIAL CHEMICAL INDUSTRIES, Ltd. (Du Pont de Nemours & Co.. E. I.). Sept. 18, 1939, No. 26032. [Class 2 (iii)] [Also in Group VI] Compositions suitable for insecticidal, bactericidal and like purposes comprise a diluent together with a linear polymeric quaternary ammonium salt produced by the process of Specification 536,017 in which a ditertiary amine is reacted with a dihalide in which halogen atoms are attached to aliphatic radicals having single bonds, or the process of Specification 535,577 wherein a compound containing two only of the groups CHOH or CHSH is reached with formaldehyde, an anhydrous acid or acid anhydride and a ditertiary amine, or by condensing with itself an #-halogeno tertiary amine of the formula R-N<<SP>R1</SP> R 11 wherein          |           X X = halogen, R = alkylene, radical having at least 3 C atoms and R<SP>1</SP>, R" are alkyl groups. Salts of the above type may be reacted so as to produce a variety of anions attached to the pentavalent nitrogen. The substances may be used dispensed in solvent or non-solvent liquid vehicles or mixed with powders, e.g. talc, diatomaceous earth, clay, for spraying or dusting purposes or may be employed in solution to impregnate materials for insect proofing purposes. A number of compounds suitable to take part in the reactions are mentioned in the Specification, for example as ditertiary amines in the first mentioned reaction triethylene-diamine and dd<SP>1</SP>-dipyridyl and certain alkaloids, e.g. nicotine, cinchonine, quinine and as dihalides methylene dibromide, p,p<SP>1</SP>- di (bromomethyl) biphenyl. Examples of substances containing the group CHOH or CHSH are 1.4-cyclohexylene glycol, 2-mercaptoethanol. Linear polymeric quaternary phosphonium salts may also be used for like purposes and may be prepared by reaction of ditertiary diphosphines and alkylene halides the latter being of the type used in analogous preparations of the ammonium compounds and the reactants being so selected that the sum of their radical lengths is at least 7 so as to avoid ring formation. Linear polymeric ternary sulphonium salts for similar purposes can be prepared by reaction of alkyl halides or sulphates with polyalkylene sulphides the components being chosen to avoid ring formation.
Patent GB-260539-A (GB)
Abstract: 260,539. Lepel, E. von. Oct. 29, 1925, [Convention date]. Transformers. - An induction coil for ignition purposes &c. having a trembling contact-breaker of ordinary type is provided with an auxiliary coil producing a field which holds the contact-breaker open until the main switch is again opened. In the arrangement shown in Fig. 2, the auxiliary coil 9 and the main coil 6 are on the same core 5, the auxiliary coil being in parallel with the contact-breaker 3. In a modification the contact breaker is controlled by coils on a separatee core, and one such contactbreaker may be used in connection with a number of coils. Another contact breaker may be placed in the secondary circuit. Fig. 5 shows a further modification in which the auxiliary coil is dispensed with and a resistance 19 is coupled across the contact breaker 3, so that when coutact is broken sufficient current passes through the main coil 6 to hold the contact-breaker open.
Patent GB-386716-A (GB)
Title: Improvements in electric motor control systems
IPC: B60L11/18
Filed: 1931-09-17
Abstract: 386,716. Master control of D.C. motors. WHYMAN, F., Arncott, Greenway Road, Timperley, Cheshire, and ASSOCIATED ELECTRICAL INDUSTRIES, Ltd., Crown House, Aldwych, London. Sept. 17, 1931, No. 26084. [Class 38 (iii).] Regenerative braking.-A pair of traction motors A1, A2 are connected as series wound motors during motoring by an electromagnetic switch 8, and during regeneration this switch is thrown over so as to connect the motor armatures to return current to batteries 3, 3a, the fields being separately excited by an exciter E, whose field resistance FR is shortcircuited under automatic control so that a substantially constant regenerated current is obtained as the motors slow down, the automatic control being effected by the same current limit relay 7 as is used to effect automatic acceleration during motoring. The control system, Fig.- 3 (not shown), includes a master-controller having start, series, and parallel motoring positions on one side of its off position, and a single regenerative position on the other side. In the motoring positions contactors are closed sequentially under control of the current limit relay 7 to exclude starting resistances 4<1>, 4<2>, rearrange the motors in parallel and again exclude the resistance. Movement of the master controller to the regenerative position causes all contactors to open as it passes through the " off " position. When the regenerative position is reached, the ollowing sequence of operations occur. An auxiliary relay is energized only when the contactors 10 and G have opened. When this relay is energized, its contacts complete the circuit for the coil that moves the switch 8 to the generating position. Auxiliary contacts on the switch 8 then complete a circuit to the coil of the exciter contactor E1, which when closed completes a circuit, provided that the contactor for the auxiliary motor driving the exciter is closed, to the coils of the contactors 10, and LS1. Thereafter contactor operation progresses to the full series position, after which auxiliary contacts on the switch 8 deviate the control by the current limit relay 7 to the actuation of the contactors for short-circuiting the exciter field resistance FR. When motoring is resumed, the switch 8 is moved to the motoring position but only after the auxiliary relay is again energized. Thus movement of the switch 8 can only be made when contactors 10 and G are open.
Patent GB-1284151-A (GB)
Title: Tobacco containing encapsulated flavor
Inventor: QUINN ALTON DE WITT
IPC: A24D3/06
Filed: 1970-06-01
Abstract: 1284151 Microcapsules INTERNATIONAL FLAVORS & FRAGRANCES Inc 1 June 1970 [18 Aug 1969 18 Nov 1969] 26230/70 Heading B8C [Also in Division A2] Minute capsules of 50-500 microns diameter containing a volatile flavouring material, for incorporation in tobacco compositions (see Division A2), have rigid walls which are heat rupturable with a crackling sound and may be made from gelatine-gum arabic or gelatinecarrageenan complexes, phased out succinylated gelatines, or ethyl cellulose. In the examples, a synthetic clove oil is encapsulated in a gelatine-gum arabic complex by first dispersing the oil in a hot solution of gelatine or gum arabic and then stirring in a hot solution of gum arabic or gelatine respectively and cooling the mixture with continued stirring, or by adding the oil to a hot stirred mixture of precipitated gelatine in gum arabic solution (produced by mixing hot solutions of each) and subsequently cooling with continued stirring. Glutyraldehyde is added in some of the examples to harden the formed capsules, and in one example sodium benzoate is also added.