baber/WOPTO huggingface dataset:
Patent GB-1462354-A (GB)
Title: Vacuum servo arrangements
IPC: F02B67/00
Filed: 1973-02-09
Abstract: 1462354 Regulating I C engine throttle valves; evacuating chambers BRITISH LEYLAND UK Ltd 6 Feb 1974 [9 Feb 1973] 6496/73 Headings F1B and F1N The level of vacuum in a vacuum reservoir 7, connected via a one-way valve 8 to the intake manifold 2 of a diesel engine 1 at a location between the engine and a butterfly throttle valve 9, is controlled by a pressure responsive unit 12. The unit senses when the degree of vacuum is insufficient and acts to close the valve so that the engine action can replenish the vacuum. The butterfly valve 9 is mounted upon a spindle 10 having a cam 15 at one end and a projection 22 at the other. The cam is engaged by pin 20 carried by a lever 16 which is connected by a cable 13 to the throttle pedal and to a lever 33 through a lost motion device. The lever 33 is connected by a cable 32 to the injection pump 31. The unit 12 comprises a casing 30 subdivided into upper and lower chambers by a diaphragm 27 biased downwardly by a spring 28, the diaphragm having an actuator 26 connected through a spring 25 to a lever 24 rotatably mounted about the spindle 10. A spring 21 acts between the lever 24 and the projection 22 to bias the valve to a closed position, this being aided by the unequal areas a 1  a 2  of the valve. The upper chamber 29 is connected to the vacuum reservoir and the lower is open to the atmosphere. In use, with the engine not switched on and the throttle pedal not depressed, the valve is closed by the spring 21, the pin 20 is out of contact with the cam, and the pin 23 is out of contact with the lever 22. When the engine is switched on a vacuum is produced by the engine in the reservoir, this vacuum being transmitted to the upper chamber of the unit 12. When the upward force on the diaphragm due to the atmosphere pressure in the lower chamber, overcomes the spring 28 the actuator 2 rises to cause the pin 23 to abut the projection 22 and partially open the valve, thereby stopping any further evacuation of the reservoir. Depression of the throttle pedal causes further opening of the valve with, after an initial lag due to the lost motion device, operation of the injection pump. In an idling or overrun situation where the valve is maintained open by the action of the unit 12 but the throttle pedal is undepressed, if  there is loss of vacuum in the reservoir, perhaps caused by the application of the brake, then the  pressure in the upper chamber of the unit 12 rises, this allowing the spring to push the actuator downwardly and remove the pin 23 from the projection 22. This in turn allows the spring 21 to bias the valve back to a closed position in which position the engine begins to apply vacuum to the reservoir. When the desired vacuum is reached the diaphragm once again moves up to cause pin 23 to abut the projection and re-open the valve to prevent further application of vacuum.
Patent GB-1083650-A (GB)
Title: Thermal protective device
IPC: H01H73/30
Filed: 1966-02-15
Abstract: 1,083,650. Thermal switches. CANADIAN GENERAL ELECTRIC CO. Feb. 15, 1966 [May 15, 1965], No. 6505/66. Heading H2B. In a switch for protecting a motor against overload, a bimetal strip 22 is loosely mounted on a further bimetal strip 27 secured to the wall 18 of a housing 1. The high expansion sides of the two strips is to the left, and strip 22 is loosely connected to a support 28 slidable in the housing to actuate a snap-action switch. Under severe overload, the strip 22 is heated by a heater 12 and its lower end bends to the right to open contacts 72, 74 and close contacts 73, 75. If a plunger 6 is in the position shown, the contacts have to be reset by depression of the plunger, but if the plunger is held depressed by a spring (7), (Fig. 1, not shown), the contacts are automatically reset on cooling of strip 22. In the event of a lesser, prolonged overload, the upper end of strip 27 bends to the right, and strip 22 pivots clockwise about an adjustable stop 45 to move its lower end to the left, thereby effectively delaying actuation of the switch. Ambient temperature compensation may be provided by making switch part 46 of bimetal. The inner walls of compartment 13 may be lined with a heat-reflecting layer.
Patent GB-1362064-A (GB)
Title: Grinding machines
IPC: B02C13/28
Filed: 1972-02-16
Abstract: 1362064 Hammer mills SIMON-BARRON Ltd 16 Feb 1972 [11 March 1971] 6630/71 Heading B2A  A hammer 22, Fig. 1, for a hammer mill, comprises a rectangular plate having an aperture adjacent one end for pivotal attachment to the rotor and at least two apertures 26 closely adjacent the other end which rupture when sufficient wear has occurred as indicated at 25, Fig. 2, presenting fresh cutting edges. The mill described comprises inlets 11 and 12 for product to be ground and air and the housing 10 includes an inner housing with a replaceable perforate portion in two halves 14a b. An air inlet 15 is provided at the base of the housing 10 and ground product is discharged via a chute 16. Five beaters 22 are mounted about shafts 21 spaced around a drum 20. The beaters cooperate with a kibbling plate 18.
Patent GB-590809-A (GB)
Title: Improvements in or relating to vitamin compositions and the manufacture thereof
IPC: A61K31/16
Filed: 1945-03-16
Abstract: A water-dispersible vitamin preparation for food, e.g., for addition to whole or skim milk, and for pharmaceutical use, is made by dissolving in honey one or more of the watersoluble vitamins, exemplified by concentrates of the vitamin B complex from rice bran or whey, thiamin hydrochloride, riboflavin, nicotinic acid amide, pantothenic acid, calcium pantothenate, biotin, pyridoxine and vitamin C, and emulsifying into the honey one or more of the fat-soluble vitamins, A, D, E and K exemplified by vitamin A or D concentrates prepared from fish oils by saponification and high vacuum distillation, carotene concentrates and vitamin D concentrates obtained by activating cholesterol, ergosterol or 7-dehydrocholesterol.  The emulsification may be assisted by the use of edible gelatinous or mucilaginous substances, e.g., the edible grades of methyl and ethyl cellulose, gum acacia, gum tragacanth, gum senegal, agar, sugar beet gum, pectin and gelatine, and by preliminarily dissolving the fat-soluble vitamin in ethyl alcohol. The pH of preparations not already pH4 or less is preferably reduced by addition of a non-toxic organic acid, e.g., lactic, tartaric or citric acid.
Patent GB-660063-A (GB)
Title: Improvements relating to alloys
IPC: C22C19/00
Filed: 1949-03-11
Abstract: A nickel-base alloy has the following composition : C 0.75-2.5 per cent; Sn 1.0-6.0 per cent; Mg 0.03-0.25 per cent; Si 0.5-4.0 per cent; Mn 0.5-4.0 per cent; Ni, and impurities, the balance. The alloy may contain one or more of the following elements provided that the Ni content of the alloy does not fall below 70 per cent; Fe up to 10 per cent; Co up to 5 per cent; Cu up to 10 per cent; Cr up to 5 per cent; Zn up to 3 per cent and Pb up to 1 per cent.  In making the alloy the Ni and C may be melted, a part of the Si is then added, e.g. as ferrosilicon, the Mg is added, e.g. as an alloy with Ni, and the remainder of the Si is then added.  The alloy may be used to cast pump and cylinder liners, pump housings, pistons, piston rings, impellers, bushings and bearings.
Patent GB-1097504-A (GB)
Title: Elastomeric polyurethanes
IPC: C08G18/66
Filed: 1966-02-16
Abstract: An elastomeric polyurethane is the reaction product of a diisocyanate, a polyester diol of molecular weight 700-2000, and a mixture of at least two different glycols, in proportions such that the overall ration of isocyanate to hydroxyl groups is about 1:1, while the polyester/glycol ratio ranges from 2:1 to 1:3. The glycol contains between the hydroxy groups a divalent aliphatic group containing 2-10 C atoms, of which 2-6 may form a chain separating the hydroxy groups, and optionally such groups as -O-, <FORM:1097504/C3/1> alkyl, -arylene-, and -O-arylene-O-.  Examples are ethylene and tri-, tetra-, penta- and hexamethylene, neopentylene, diethylene, dipropylene, dibutylene glycols, ethyl and methyl diethanolamines, methyl dipropanolamine, p-xylylene diol, p-phenylene diethylene glycol and hydroquinone di-(ethylene glycol) ether. No glycol should comprise less than 20% of a mixture of two glycols, or less than 10% of a mixture of more than two glycols. Many conventional aromatic and aliphatic diisocyanates are listed. Suitable polyester diols may be derived from adipic, succinic, suberic, azelaic, sebacic and terephthalic acids or anhydrides with C2- 10 normal alkylene glycols, or from e -caprolactone polymerized with a glycol or aminoalkanol initiator.  Suitable catalysts are metal compounds (lists), phosphines and tertiary amines, in amounts of 0.1-2 weight per cent of the reactants.  The preparation preferably proceeds as a one-shot process, but it is possible to form a prepolymer from the diisocyanate and the polyester diol. Conventional pigments, fillers, and colouring agents may be added. In Examples 1, 2, 4 and 5, mixtures of two of trimethylene glycol, tetramethylene glycol and neopentylene glycol are mixed with a poly-(e-caprolactone) diol or a poly-(9:1-ethylenepropylene) adipate diol, then with diphenylmethane diisocyanate.  In Example 7 toluenediisocyanate is used, and in Example 8 a mixture of tetramethylene and hexamethylene glycols.
Patent GB-415810-A (GB)
Title: Improvements in or relating to rotary ball valves
IPC: F16K5/20
Filed: 1933-03-06
Abstract: 415,810. Rotary spherical valves. ALLEN, R., 23, Berwick Avenue, Hayes, Middlesex. March 6, 1933, No. 6816. Addition to 403,389. [Class 135.] In a rotary ball valve according to the parent Specification a separate inclined seating 6, Fig. 1, is provided between the casing 1 and the wedging member 5, this wedge seating 6 and the ball seating 3 at the opposite side being provided with annular projections 8 and 11 fitting the walls of the main passages 10 so that the mountings of the ball 2 are detachable and the casing construction simplified. The ball seatings 3, 4 are shown supported by a frame 15 resting on the bottom of the valve casing. In a modification, the seatings 3, 4 are supported on short sleeves entering the fluid passages. The valve casing 1 has a widening flanged extension 16 receiving the bonnet 17 which carries the screw abutment 22 compressing a spring 23 on to the wedge member 5 and is secured by a screw ring conical joint 19. The bonnet may, however, be made integral with the casing and the screw abutment mounted in the casing underneath the wedge, a removable cover 48, Fig. 13, adjacent the said abutment carrying a removable support 66 for the ball 2. Alternatively, the screw abutment is carried on an enlarged cover or seal plate. The ball seatings 3, 4 may be extended to surround the ball sufficiently to isolate the ball passage from the interior of the casing in every position of the ball. As shown in Fig. 13 the separate coupling member 26 between the valve spindle and the valve driving member is formed with an arcuate slot 68 engaging a stop pin 67 to form a limit stop for the open and closed positions of the valve. The gland 18, Fig. 1, is packed under pressure of a spring 32 compressed by a nut 34 on the valve spindle 25.
Patent GB-953005-A (GB)
Title: Substituted n-phenylethyl-n-phenyl-piperazines
Inventor: BOISSIER JACQUES
IPC: C07D295/096
Filed: 1961-02-24
Abstract: The invention comprises compounds of general formula: <FORM:0953005/C2/1> in which R1 represents fluorine, bromine, hydroxy, amino, nitro, methylthio or acetylamino; and their acid addition salts; and their preparation (except when R1 is amino) by reacting a compound of formula: <FORM:0953005/C2/2> in which X represents halogen with a compound of formula: <FORM:0953005/C2/3> in the presence of an alkaline agent capable of combining with the hydrohalic acid liberated in the reaction; and preparation of the amino compound from the above-produced nitrocompound by catatytic hydrogenation in the presence of platinum oxide and of the acetylamino compound by subsequent acetylation. N-(2-fluorophenyl)-piperazine is prepared by heating the hydrochlorides of o -fluoroaniline and diethanolamine.  Therapeutic compositions comprise the above piperazines and salts with pharmaceutically acceptable carriers or diluents. Oral, rectal and parenteral administration using solid and liquid vehicles is mentioned.  The compounds are central depressants, hypotensors, anticonvulsives and barbiturate potentiators.
Patent GB-525893-A (GB)
Title: Improvements relating to coal face conveyors
IPC: B65G21/06
Filed: 1939-03-02
Abstract: 525,893. Conveyers. CROFTON & CO. (ENGINEERS), Ltd., C., and MANN, R. W. March 2, 1939, No. 6875. [Class 78 (i)] The upper carrying-run of a belt conveyer is supported upon curved surfaces 20 extending transversely across the supports 12 which carry the rollers 22 supporting the lower run. In the illustrated form these supports are formed integral with the plates 24 which cover and protect the lower run. Holes in the plates engage projections 18 on flanged portions of the supports to locate them in position. The supports are extended upwards at 30 to form abutments for spill plates 32. Specification 314,598, [ Class 78 (i)], is referred to.
Patent GB-816856-A (GB)
Title: Veterinary compositions containing 4-bromo-4-nitrocarbanilide
Inventor: HEPWORTH WALTER
IPC: A61K31/165
Filed: 1956-01-04
Abstract: Veterinary compositions for the treatment of coccidiosis in poultry comprises 4-bromo-41-nitrocarbanilide in admixture with a non-toxic pharmaceutically acceptable diluent or carrier. The compositions may be such as can be admixed with foodstuff or drinking water, or may be in the form of a food composition in which the active ingredient is mixed with an edible vegetable material such as animal or poultry feed urea, corn meal, fermentation residues and distillers' dried grain.  Compositions for admixture contain 1 to 50, and preferably 3 to 20, per cent of the active ingredient.  Food compositions contain 0.005 to 0.05, and preferably 0.01 to 0.03, per cent of the active ingredient.  The active ingredient may also be put up in the form of a tablet or capsule.  Compositions for admixture take the form of (a) powders, (b) aqueous dispersions.  For powders, the carriers are solids such as talc, kaolin, chalk, lactose or urea with or without the further addition of dispersing and/or wetting agents such as the condensation product of cetanol and ethylene oxide, the condensation product of betanaphthalene sulphonic acid and formaldehyde, or a thickening agent such as methyl cellulose. Aqueous dispersions may contain (a) sweetening agents such as lactose, (b) solubilizing agents such as propylene glycol, and (c) dispersing agents such as polyoxyethylene sorbitan monooleate. In the case of foods, the active ingredient may be dissolved in a suitable organic solvent such as acetone, the solution so obtained distributed in the food and the solvent removed by, e.g., drying at 50 DEG  C.
Patent GB-1207265-A (GB)
Title: Improvements in or relating to circuit components
IPC: H05K7/20
Filed: 1968-02-13
Abstract: 1,207,265. Semi-conductor devices. HEBERLEIN & CO. A.G. 13 Feb., 1968 [14 Feb., 1967; 24 Jan., 1968], No. 7096/68. Heading H1K. A flat parallelpiped box has a base 2, side walls 3, 3<SP>1</SP>, and partition walls forming a trough 23 made from a single aluminium casting. The rear wall of the box is of plastics material. A semi-conductor element 24 is located in the trough 23 which is then filled with a plastics filler compound 25 containing quartz sand so that heat generated by the element in operation is swiftly dissipated. A plastics plate 10 bearing a printed circuit is fixed in the box and may carry circuit elements such as resistors, semi -conductors, capacitors &c. Indicator lamps, (12, 13) and a fuse (14), Fig. 2 (not shown) are also provided in the front wall of the box.
Patent GB-845937-A (GB)
Title: Powdered soup product and method of making same
IPC: A23L23/10
Filed: 1958-03-06
Abstract: A dry pre-cooked soup mix, which disperses readily in hot or cold water without lump formation, is prepared by moistening a dry soup powder with water in order to cause the particles to aggregate and then removing the excess water without breaking up the aggregates to give a free-flowing granular material containing less than 7 1/2 % of moisture.  Milk powder is preferably mixed in before the moistening and, in order to assist in the conversion of the lactose to a -lactose monohydrate, a small amount of this material is added. Potato, pea, mushroom, bean, tomato, or cooked poultry powder and a stabilizer starch may be added.  Reference has been directed by the Comptroller to Specification 793,118.
Patent GB-1317219-A (GB)
Title: Fluid filters
IPC: B01D29/21
Filed: 1970-09-04
Abstract: 1317219 Magnetic separating SPERRY RAND CORP 4 Sept 1970 [5 Sept 1969] 7344/72 Divided out of 1317218 Heading B2J [Also in Divisions F2 and H1] In a filter, wherein fluid is forced outwardly to inwardly of an element sealedly retained in a housing by a cover containing a by-pass valve, against the pressure of an inner spring (Fig. 1, not shown) the filter element is outwardly surrounded by a further helical spring interposed between the cover and the housing, made of a Cu Ni Fe ductile magnetic alloy which is magnetised alternately in successive north-south poles along its length to collect ferrous particles from the fluid. The inner spring may also be magnetised. Magnetisation is effected by placing the spring on a core 36 interposed between adjustable clamping jaws 31a, 31b engaging first and second sets of points of the exterior of the spring spaced peripherally and axially, the jaws forming poles of a DC energised magnetizing coil 33; the coil resting on a non-magnetic plate 37 (Figs. 3, 4). The pairs may have plural spaced contacts providing multiple north-south poles along the spring length. Specifications 1,317,220 and 1,317,218 are referred to.
Patent GB-609523-A (GB)
Title: Improvements in and relating to evaporation apparatus
IPC: B01D1/12
Filed: 1946-03-08
Abstract: In a vertical tube evaporator wherein up-flow and down-flow tubes pass between upper and lower liquid/vapour separators, the up-flow tubes open into an additional separator disposed in the upper separator, and a conduit is provided for conducting a large part of the vapour in the upper separator to the lower separator without passing through the down-flow tubes.  An automatic valve may be provided in the conduit in order to maintain the difference of pressure between the upper and lower separators such that only a small amount of vapour from the upper separator passes into the down-flow tubes.  In a preferred embodiment, the up-flow tubes 3 (Fig. 1) <PICT:0609523/III/1> <PICT:0609523/III/2> <PICT:0609523/III/3> and down-flow tubes 4 are placed in the same heating chamber 1. The up-flow tubes discharge into the interior of separator 5, essentially formed of a series of partitions 6 (Fig. 3) and orifices 7, disposed in chamber 8 which is connected to lower separator 9 (Fig. 2) by conduit 10 and valve 11.  The top end of each down-flow tube is provided with a special nozzle 15 to ensure uniform distribution of liquid between the down-flow tubes.  The amount of vapour passing through the nozzles is just sufficient to ensure that the inner surfaces of these tubes is suitably wetted by the liquid. The liquid to be evaporated enters the evaporator at inlet 12 and the concentrated liquid is discharged through outlet 13; vapour leaves via outlet 14.  Specification 12,502/06, [Class 32], is referred to.
Patent GB-473467-A (GB)
Title: Improvements relating to carburettors for internal combustion engines
IPC: F02M29/02
Filed: 1937-03-12
Abstract: 473,467. Spray carburetters. ZWICKY, A. March 12, 1937, No. 7384. Convention date, March 14, 1936. [Classes 7 (ii), 7 (iii), and 7 (vi)] An auxiliary throttle valve a, mounted-in an attachment between the carburetter A and the induction pipe C, is coupled with the throttle valve and can be independently operated by the driver when the throttle is moved to the idling position so as to close completely the induction pipe. The auxiliary valve a is coupled to the throttle valve c by levers c<2>, d, e and f, of which the latter e, f are connected by a spring-catch device, formed by a ball e3 which normally engages a detent g<1>. When. the valve c is in the idling position, the valve a may be completely shut by a rod h<2> which through a finger h<1> on a bell-crank lever h rotates the lever f and breaks the spring-catch device between the levers e, f. The mixture rotates fan wheels b on opposite sides of the throttle valve a.
Patent GB-1178411-A (GB)
Title: Non-Linear Servo-Control Devices
IPC: G06G7/20
Filed: 1967-02-16
Abstract: 1,178,411. Electric analog computing for automatic pilotage. SOC. FRANCAISE D'- EQUIPEMENTS POUR LA NAVIGATION AERIENNE. 16 Feb., 1967 [23 Feb., 1966], No. 7444/67. Heading G4G. [Also in Division G3] A non-linear servosystem comprises an electric analogue computer resolving the equation: # = (sign of z)  m # x <SP>n</SP>y<SP>O</SP>z<SP>p</SP> where m=n+o+p which are arbitrary constants x=f 1 (α), y=f 2 (α), z=f 3 (α), where f 1 , f 2 , # 3  are linear, or pseudolinear functions of α or combinations thereof. # is the output magnitude. α is the control magnitude. For automatic pilotage of air or other craft, course error ## from gyro 1 is applied to operational circuits 2, 3 developing signals representing y = (###/1+# 1 s) z=##(1+# 2 s) where s is a differential operator, # 1 , # 2  are time constants, and # is gain. The Y signal is passed over rectifier 4, developing a modular signal Y | to multiplier 5 also receiving the z signal to produce | Y | z, from which square root circuit 6 extracts a signal representing # | yz | having sign of z, which operates servo-control unit 7 to apply corrective control # to rudders 8 of craft 9. Multiplier 5 comprises (Fig. 2, not shown) transistor chopping gates transmitting the direct and phase reversed inputs | y | , - y | to a summation amplifier followed by a filtering amplifier; the gates being controlled by a trigger circuit excited by an adding and phase reversing amplifier receiving a triangular wavetrain of high frequency, and also a signal of amplitude z, so that the amplifier produces. square waves of amplitude proportioned to | Y and opposed excursions differing in width by hz, whereby the filtered output represents | y |z. Square rooter 6 comprises (Fig. 3, not shown), a phase reversing input amplifier additively receiving input | Y | z and the output signal of a sign reversing multiplier energized by the output of the input amplifier, both directly and through a rectifier retaining the sign of z. At equilibrium this output represents # | Y | | Z | with sign of Z.