baber/WOPTO huggingface dataset:
Patent GB-276297-A (GB)
Title: Improvements in and relating to the manufacture of phosphate fertilizers
IPC: C05B11/08
Filed: 1927-01-17
Abstract: 276,297. Adelantado, L. Aug. 19, 1926, [Convention date]. Manures.-In making manures, finely divided natural phosphates are treated with soluble sulphates in the presence of a mineral acid, preferably sulphuric acid, at least three molecular weights of sulphuric acid and three of sulphates (preferably potassium or ammonium sulphates) to two molecular weights of tricalcic phosphate being employed. The masses obtained are washed with hot water, and the acid lyes neutralized, concentrated and crystallized out. Corresponding chlorides, sulphates, and the like may be added, or the lyes may be used for impregnating organic or inorganic material such as peat. By using a mixture of two sulphates double salts, e.g. potassium ammonium phosphate are obtained. To the phosphate treated with sulphuric acid and sulphates, may be added a quantity of phosphate equal to that first used, to give a mixture of mono and di alkali phosphates. The acid lyes, mother liquors of the crystals, and water used for washing them, may be used in further treatment of raw phosphate. A residual product remains of calcium sulphate and a small percentage insoluble phosphate. Specifications 191,129 and 239,551 are referred to.
Patent GB-141799-A (GB)
Title: Improvements in the manufacture of sulphate of ammonia
IPC: C01C1/249
Filed: 1919-01-20
Abstract: Neutral ammonium sulphate is prepared by mixing the crystals removed from the saturator with ammonium sulphite or bisulphite, in solid form or in solution, either before or after the crystals have been washed, or by adding ammonium sulphite or bisulphite to the washing-liquor.
Patent GB-1273281-A (GB)
Title: Colorimeter
Inventor: SCHULKIND HERBERT
IPC: G01N21/27
Filed: 1970-01-12
Abstract: 1,273,281. Logarithmic amplifiers. PHOTOVOLT CORP. 12 Jan., 1970 [14 Jan., 1969], No. 1428/70. Heading G4G. [Also in Divisions G1 and G3] The output of a photodetector 18 in a colorimeter (see Division G1) is converted to logarithmic form using the operational amplifier D14 and its associated circuitry. Transistors Q7b, Q8b, Q9b form a series combination connected between the output and input of the operational amplifier, and the effect of this series combination together with the amplifying characteristic of D14 is a logarithmic output signal which is applied to the meter 24 when the switch 20, 22 is in position C. To compensate for thermal drift in transistors Q7b, Q8b, Q9b three further transistors Q7a, Q8a, Q9a are provided at the power input to the amplifier D14. Transistors Q7a and Q7b are thermally matched and mounted together, as are the pairs Q8a-Q8b and Q9a- Q9b. The transistors Q7a, Q8a, Q9a also serve to regulate and stabilize the power supply to the amplifier, which supply is derived in the first instance from secondary 62 of transformer T1. The resistor 21 and potentiometer P3 are provided to trim the functional operation of the amplifier in the conventional manner, while potentiometers P4a and P4b are provided to apply coarse and fine adjustments, respectively, of the meter 24 for calibration purposes.
Patent GB-493251-A (GB)
Title: Improvements in electrode feeding mechanisms for arc lamps
IPC: H05B31/00
Filed: 1938-01-17
Abstract: 493,251. Automatic control systems. ZEISS, C., [Firm of]. Jan. 17, 1938, No. 1438. Convention date, Jan. 27, 1937. [Class 38 (iv)] [Also in Group XL] Arcs.-The electrode of an arc lamp is rotated and fed at the same time by an annular member surrounding it in a plane at an angle with its axis and engaging with a portion of its circumference by means of internal teeth. In the arrangement shown the rotary member consists of a ring c enclosed in a bevel wheel c<2> and furnished with internally-projecting pointed screws c<1>, of which those in the upper portion of the ring engage the electrode a. The bevel wheel c<2> engages a pinion e driven through a flexible shaft e<1> and carried on a block f supported on a rod h. The block f and the rotary member can be adjusted in azimuth on the rod h by screws engaging a stop i<1> carried by the rod. The rod can also be turned in azimuth to regulate the rate of feed by means of an electromagnet l controlled by a thermostat m operated by the radiation of the arc. To insert a new electrode the block f and the rotary member can be raised by a lever k so that the pins c<1> no longer engage the surface of the electrode.
Patent GB-314481-A (GB)
Title: Improvements relating to glass blowing machines
IPC: C03B5/187
Filed: 1929-01-15
Abstract: 314,481. Bullman Machine Co., Ltd., (Assignees of Hillmann, H.). June 28, 1928, [Convention date]. Gathering molten metal.-Relates to a device for skimming the surface glass from an area from which mould charges are gathered by suction. The device, as shown in plan in Fig. 3, comprises a vertical shank a and two blades b, c set approximately at right-angles to one another. Each blade, as shown in section in Fig. 5, tapers downwards, and the lower part c<1>, which forms the skimming-surface, is inclined to the vertical faces of the blades. The skimming- devices are carried by the blowing-machine and one of them is arranged in advance of each of the parison moulds k. Each skimmer is so positioned that the blade b lies approximately parallel with the path x - - x of the device and with the front wall d of the trough, or opentopped forehearth, from which the glass is gathered. The blades are preferably hollow and are cooled by means of water circulated through them from the shank a.
Patent GB-769300-A (GB)
Title: Improvements in electro-optical systems
IPC: H01J40/14
Filed: 1945-01-18
Abstract: 769,300. Photo-cell circuits. WESTERN ELECTRIC CO., Inc. Jan. 18, 1945 [Oct. 7, 1943], No. 1545/45. Class 40 (3). A photo-electric cell is connected in series with a resistor having an appreciable self-heating effect and resistance-temperature coefficient, a control voltage dependent on changes in illumination of the cell being taken from the cell or resistor. As shown, a thermistor 5 is connected in series with a photo-electric cell 6 and a D.C. source 7, the thermistor being also connected across the input of a thermionic amplifier 10. The resistance of the thermistor, which may be as described in U.S.A. Specification 2,276,864, is substantially constant for small current values therein, when the amplifier input is proportional to the cell illumination. For higher current values, corresponding to increased illumination, the thermistor resistance decreases to reduce the sensitivity, provided the changes of illumination are not too rapid. The arrangement may be used for converting a square-topped light impulse into a peaked electric impulse, and discriminating, on an amplitude basis, between high- and low-frequency light pulses. The thermistor may be condenser coupled to the amplifier, Fig. 2 (not shown), so that larger variations of illumination may be utilized without overloading the amplifier. A varistor of the quick-acting kind, e.g. as disclosed in Specification 292,110, [Class 36], may be used in parallel or series with the thermistor, Figs. 3, 4 (not shown). A protective resistance may be inserted between the cell 6 and battery 7, Fig. 5 (not shown) when the valve 10 is a thyratron.
Patent GB-371345-A (GB)
Title: Pneumatic wheel for road vehicles
IPC: B60B9/20
Filed: 1931-01-17
Abstract: 371,345. Resilient wheels. RENNIE, G., 64, Canongate, Edinburgh. Jan. 17, 1931, No. 1600. [Class 144 (i).] In a resilient wheel of the kind in which a pneumatic ring is interposed between the hub and the rim, the pneumatic member 6 is formed with spoke - like projections 11, 12 which fit into recesses 7, 8 provided respectively on the rim and hub 5. The wheel has a solid tyre 1 and side discs 2, 3 held together rigidly by bolts 4.
Patent GB-741987-A (GB)
Title: Improvements in or relating to method and apparatus for classifying particles of different sizes
IPC: B03B5/54
Filed: 1952-01-22
Abstract: 741,987. Washing granular material. HARDINGE, H. Jan. 22, 1952 [Jan. 26, 1951], No. 1749/52. Class 82(2). [Also in Group I] Particles of different sizes e.g. sands and fines are separated by feeding the mixture of the particles into a pool of liquid, progressively withdrawing successive quantities of the mixture from the pool in contiguous compartments or pockets along an inclined path, and, as said quantities are moved above the liquid level of the pool, decanting, through the top only of said compartments, a portion back into the pool while shielding oncoming quantities from appreciable contact therewith. The mixture is fed as a pulp from inlet 16 and the fine particles are carried by the overflow of liquid at 22. An endless belt 24 having vanes 44 conveys the sands up the inclined bottom of the tank over a bed of sand 58. The endless belt is of impermeable material and has at least one hole formed therethrough for each compartment formed by the vanes. As the compartments raise successive quantities of sand above the liquid level of the tank some of the water from the compartments is decanted through the holes carrying entrained fines with it. The force of the water emitted through the holes prevents any reverse flow of water carrying fines back to the compartments and therefore the succeeding compartmentfuls of sand are not contaminated. If desired an upward flow of water can be diverted through the sand bed and thus through the sand in the compartments, to assist the decanting and separating actions. The vanes engage side plates which are spring-pressed thereto and constitute the sides of the compartments. Angle pieces 50 act to guide the vanes. The lower end of the belt may be adjusted vertically by a handle 38 and an associated rack and pinion. In a modification (not shown) the endless belt is replaced by a disc carrying radially disposed vanes on one side and rotating about an inclined axis.
Patent GB-905608-A (GB)
Title: Pressure fluid control system
IPC: F15B13/04
Filed: 1960-01-18
Abstract: 905,608. Hydraulic apparatus. CESSNA AIRCRAFT CO. Jan. 18, 1960 [Feb. 19, 1959], No. 1753/60. Class 69 (2). A pressure-fluid control system for a double-acting fluid motor 19 comprises fluid supply means 16, fluid return means 24, 25, means forming two circuit control passages 26, 27 connectible to opposite sides of the motor, valve means 18 for selectively connecting either control passage 26 or 27 to the supply means while connecting the other control passage to the return means and in one position blocking flow to and from both control passages, two separate by-pass passages 28, 29 each associated with and connectible to a respective one of the passages independent of the valve means, and means 30, 31 responsive to an increase in pressure in one control passage and a decrease in pressure in the other control passage to by-pass excess fluid from the higher pressure control passage into the lower pressure control passage. The motor 19, which may operate the boom 41 of a power shovel, is connected by lines 22, 23 to ports 20, 21 leading from the circuit control passages 26, 27. The control passages are connected to a bore 32 receiving a reversing valve spool 18 which when moved to the left from its neutral position shown connects the passage 27 through a check valve 35 and the supply means 16 to a relief valve 15 and pump 12, and connects the passage 26 to a transfer passage 36 leading to the return line 24, 25 connected to a reservoir 13, the boom 41, in this position of the spool 18, being lowered. When the spool is returned to its neutral position, to which it is urged by a device 60, the inertia of the boom causes an increase in pressure in the side of the motor connected to the passage 26. The increase in pressure acts through an orifice 61 in the relief valve 30 to open a needle valve 51 dropping the pressure in a chamber 63 so that fluid in a chamber 43 connected by ports 45 to the control passage 26 moves a member 47 to the right against a spring 48 to allow fluid to pass through a seating 44 to the by-pass passage 28, transfer passage 36 and return line 24, 25. The passing of fluid through the valve 31 causes a drop in pressure on the side of the motor connected to the passage 27, which drop in pressure permits fluid in the return line 24 to pass through the by-pass passage 29 and passages 55, 58 in the one-way ball valve 31 into the passage 27 to prevent cavitation in the motor. The valve housing 17 is formed with passages 10, 11, whereby it may be used in association with other valves in a multiple valve bank. The housing may be modified by replacing the transfer passage 36 by a passage 39 connected to the return line 25.
Patent GB-576529-A (GB)
Title: Means for temporarily supporting separated sections of a wheeled machine or a wheeled vehicle
IPC: B66F15/00
Filed: 1944-02-01
Abstract: 576,529. Lifting-jacks. CUMMING, A. Feb. 1, 1944, No. 1854. [Class 78 (iii)] [Also in Group XXXI] Means for temporarily supporting two separated sections A, B of a wheeled vehicle or machine comprise a base 1 carrying adjustable supports 13, 28 adapted to engage the sections to be separated, these supports being relatively movable along the base so as to continue to support the sections in alignment as they are drawn apart and moved together again. The invention is shown applied to a tractor having sections, A, B, Fig. 1, normally bolted together, the section A comprising the transmission housing and rear wheels, and the section B comprising the engine and front wheels. The base 1 has fixed at one end a jack 13, Figs. 1 and 2, having a cradle 18 adapted to support one end of the section A. The adjacent end of section B is supported by a cradle 28 pivotally suspended at 25 from screw jacks 21, 22 fixed to an axle 20 having wheels 19 running on rails on the base. When the two sections of the tractor are to be separated the jack 13 is adjusted to support section A and the cradle 28 is moved into position by means of handles 31 which are fixed to the axle 20 and by which the jacks 21, 22 are tilted to lower the cradle for movement on the wheels 19. When the cradle is in the right position, the jacks 21, 22 are rocked to the vertical position and are adjusted to support section B, and the cradle is prevented from swinging about the pivots 25 by means of a catch 29. The handles 31 may be bolted at 34 to the section B so that they act as struts and prevent movement of the support relative to the section. Before the sections are uncoupled, the overhanging end of the fuel tank (not shown), which is carried by section B but is partly supported by section A, is supported by means of the jack shown in Fig. 4. This comprises a base 35 having recesses 36 adapted to fit over bolts on section B and hold the jack in place. A hand lever 40 is pivoted at 38 on the base and carries a tank support 43 by means of a link 41, stops 44, 45 limiting the relative movement of the parts. When the lever is depressed to lift the support 43, a pin 46 on the lever engages the hook 53 of a spring loaded catch 47 and locks the support in the raised position. The base 1 is collapsible and comprises two side members connected by readily-detachable cross-bars.
Patent GB-1362590-A (GB)
Title: Sheet feeding apparatus
IPC: B65H3/06
Filed: 1972-01-14
Abstract: 1362590 Feeding sheets ENGLISH NUMBERING MACHINES Ltd 26 July 1972 [14 Jan 1972] 1876/72 Heading B8R Sheets are piled on edge on a sloping tray 14 and urged against a front plate 15 by a plate 22 urged forwards along rods 18 by springs 20, the tray 14 and plate 15 defining a slot 30 through which the sheets are fed in turn. The sheet separator comprises two cams 26 mounted on a shaft 28 and projecting through slots in the plate 15, so that the front sheet is moved downwards when the high portions 262 of the cams project through the slots. A separated sheet passes first to the nip between feed rollers 36 and stationary rollers 46, and then between pairs of rollers 52. The inner rollers 52 are mounted on crank arms and urged towards the outer rollers 52. The rollers 46 are mounted on a shaft 48 non-rotatably mounted in crank arms adjustable to vary the spacing between the rollers 36, 46. If more than one sheet is advanced to the nip between the rollers 36, 46, sheets other than the front are prevented from passing by the frictional action of the stationary rollers 46. The cams 26 have a surface of rubber or a resilient plastics material with horizontal ribs moulded in. A freely rotatable roller 24 protruding through an opening in the plate 22 reduces the resistance of the plate 22 to movement of the last sheets in a pile. An electric motor drives the rollers 36, 52 continuously, and drives the cam-shaft 28 through a onerevolution clutch controlled by a solenoid itself controlled from a printing-machine 12 to which the sheets are to be fed. The rollers 46 may be manually rotated to even out wear.
Patent GB-192091-A (GB)
Title: Improved illuminating puffing device
IPC: G09F13/14
Filed: 1923-01-23
Abstract: 192,091. Aktieselskab Autopil. Jan. 23, 1922, [Convention date]. Void [Published under Sect. 91 of the Act]. Vehicle lamps. - A vehicle lamp comprises a rectangular casing 6, having its inside walls polished or painted white, containing a source of light 4, a glass front or lens 7, and one or more transparent or transiuecent advertising plates 3. A mirror 8 also may be employed.
Patent GB-111759-A (GB)
Title: Improvements in or relating to Starting Gear for Motor Vehicles.
IPC: F02N1/02
Filed: 1917-02-10
Abstract: 111,759. Triumph Cycle Co., and Stanley, G. E. Feb. 10, 1917. Turning-gear.-In a kick starter for motorcycles, the ratchet clutch member E is provided with oppositely inclined cam surfaces L adapted to engage cam surfaces M on an adjacent rigid stationary member B, and to withdraw the clutch, when the clutch member has rotated through an arc in either direction. The member E is slidable on keys G on the starter shaft H and is pressed into engagement with clutch teeth on the spur gear A by a spring I. The usual spring, which normally holds the pedal F in starting position, causes the clutch member E to be normally held out of engagement.
Patent GB-546188-A (GB)
Title: Improvements relating to fuel feed systems for motor road vehicles
IPC: F02B1/00
Filed: 1941-02-17
Abstract: 546,188. Fuel feed systems. HAMILTON, D. St. A. (known as HAMILTON, D.).  Feb. 17, 1941, No. 2137. [Class 7 (iii)]  A fuel feed system for the engines of motor road vehicles comprises a main tank 1 with an engine-driven pump 6 supplying the float chamber 4 at a higher level, and an auxiliary tank 2 arranged to supply the float chamber by gravity, valves 5, 8, 10 being provided so that fuel can be supplied to the carburetter continuously by way of the tank 2, or it can be supplied from the tank 2 by gravity for starting, the supply for normal running being delivered directly to the carburetter by the pump. The tank 2 may merely contain sufficient fuel for starting, or may be large enough to constitute an emergency supply. The pipe 9 may be dispensed with, in which case the pump 6 would supply the float chamber through the tank 2.
Patent GB-268270-A (GB)
Title: Improvements in or relating to yarn clearers for winding and like machines
IPC: B65H63/06
Filed: 1927-01-25
Abstract: 268,270. Cook & Co. (Manchester), Ltd., and Sefton, T. Jan. 25, 1927. Clearing-apparatus.-The slits through which the yarns 16 pass are formed of two flanges 7, 15, 8, 14, Figs. 1 and 2, the size of the slits being adjustable. The flanges 8, 15 have a cutting edge and project at an angle greater than a right-angle, and are non-rigid whereby a slub on the yarn will draw the flange down and cause it to sever the yarn. The flanges are formed by the turned edges of plate members 4, 9, 10 mounted on a rod or bar, the central member 4 being fixed and the outer members 9, 10 being adjustable. The top of each plate adjacent the cutting flange is curved downwardly as a guide edge 8<a>.
Patent GB-636572-A (GB)
Title: Improvements in or relating to the construction of small electric motors
IPC: H02K1/16
Filed: 1948-01-23
Abstract: 636,572. Dynamo - electric machines. FISHER, A. W., and KACSER, F. Jan. 23, 1948, No. 2152. [Class 35] A motor stator having a continuous internally slotted face is vertically divided into two parts a, b, which are wound separately and subsequently fixed together by brackets e within a horizontally split casing j, k. The split d may take place at a tooth or slot, appropriate winding arrangements being illus trated.
Patent GB-910943-A (GB)
Title: Throttle valve for pneumatic percussive tool
IPC: B25D9/14
Filed: 1961-01-19
Abstract: 910,943. Percussive tools. CHICAGO PNEUMATIC TOOL CO. Jan. 19, 1961 [Feb. 16, 1960], No. 2183/61. Class 124. [Also in Group XXIX]  The air supply to a percussive tool is controlled by a throttle valve 35 (see Group XXIX) opened by a lever 49, pivoted at 51 and having a stop 53. Opening of the throttle valve admits air from an inlet 32 to a passageway 24 from where the air is directed by a valve 20 through passageway 18 or 21 to act on an end face of a motor piston 13 working in a cylinder 12. When the pistol has moved past a vent 12a in either direction, the air trapped is compressed and actuates the control valve 20 to direct air to move the piston in the opposite direction.
Patent GB-1046361-A (GB)
Title: A method for electrically protecting the surface of a metal object in electrolytes against corrosion and an apparatus for performing such method
IPC: C23F13/02
Filed: 1964-01-17
Abstract: <PICT:1046361/C6-C7/1> In the cathodic protection of e.g. a ship anodes 3 which may be spaced longitudinally along the ship are supplied during one half cycle with a rectified current from a source 5 of A.C. and during the other half cycle with a counter current through a resistance 7, having a resistance greater than that of the rectifier 6.  It is stated that having adjusted the resistance 7 to provide an average desired voltage, the presence of the counter current compensates for changes in the voltage due to changing conditions as e.g. change of area.  The anode used should be inert e.g. platinum coated titanium, zirconium coated with magnetite, carbides or nitrides of titanium, tantalum or chromium, the oxides of chromium or iron, and titanium or tantalum coated with their carbide or nitride.  A switch 9 breaks the circuit when the circuit is deprived of current.
Patent GB-1286035-A (GB)
Title: Synchronous electric motors
IPC: H02K19/14
Filed: 1970-01-16
Abstract: 1286035 Synchronous A.C. motors ELECTROMOTORENFABRIEK DORDT NV 16 Jan 1970 [17 Jan 1969 12 Jan 1970] 2268/70 Heading H2A In a polyphase synchronous A.C. motor which starts asynchronously, the rotor comprises at least two axially-spaced squirrel cages 27, 30, 32 and 27<SP>1</SP>, 34, 36 and associated magnetic cores 24, 25, and the stator comprises annular cores 18, 19 in radial alignment with the rotor cores, together carrying the A.C. winding 20, and a D.C. field winding disposed between the stator cores. The rotor cores 24, 25 are separated by a spacer 22 of magnetic material and each has a pair of poles angularly displaced by 90 degrees with respect to the poles of the other rotor core. In a modification (Fig. 3, not shown) there is a third squirrel cage, third rotor and stator cores and, correspondingly, two D.C. field windings (17, 17<SP>1</SP>). Some of the squirrel cage bars extend through the rotor poles, and the remainder rest in grooves formed in the centre portions of the rotor cores. The rotor shaft 6 has non-magnetic end portions and enlarged centre portion 6<SP>1</SP> of magnetic material, and is mounted on bearings 7, 8 in the end caps 2, 3 of the motor casing, correct positioning of the rotor cores being maintained by spacers 50. A fan 13 is mounted on one end of the rotor shaft within a further cap 14. On starting, the D.C. field winding(s) may be energized a certain time after the polyphase winding by means of a time delay relay (43, Fig. 5, not shown).