baber/WOPTO huggingface dataset:
Patent GB-1115879-A (GB)
Title: Improvements in or relating to semiconductor devices
Inventor: MASH DEREK HUBERT
IPC: H01L29/00
Filed: 1966-11-22
Abstract: 1,115,879. Semi-conductor devices. STANDARD TELEPHONES & CABLES Ltd. 22 Nov., 1966, No. 52155/66. Heading H1K. An N(P) type layer 11 of semi-conducting material is formed on an insulating substrate 13, e.g. by epitaxial deposition or surface conversion, and a P(N) type layer 12 is formed within the layer 11 and extending through it to the substrate 13, e.g. by diffusion. Semiconducting material is then selectively removed from the layers 11, 12 so as to leave a strip which includes two back-to-back PN junctions 14 between the layers 11, 12 extending fully across the strip and perpendicularly to the substrate surface, the surrounding surface being removed down to the substrate 13. One of the junctions 14 may be short-circuited by ohmic contacts either side of the junction linked by an evaporated metal strip 15, thus to provide a diode. Branch strips including further junctions 14 may also be left in the layers 11, 12 and in the embodiment shown such an arrangement is used to form an array of matched diodes. An integrated circuit may be built up on a common insulating substrate, with individual components of the circuit connected simply by semi-conducting strips in the layer 11, by conducting paths evaporated on to the semi-conducting strips connecting points of ohmic contact adjacent each device, or by conducting paths evaporated directly on to the insulating substrate 13. The substrate 13 is preferably of semi-insulating gallium arsenide; i.e. intrinsic or compensated material having a resistivity between 10<SP>6</SP> and 10<SP>9</SP> ohm. cm.; and the semi-conducting layers 11, 12 may, for example, be of gallium arsenide, gallium phosphide or germanium. A silicon dioxide layer may serve to define surface areas for diffusion, and to insulate the surface of layers 11, 12.
Patent GB-1448706-A (GB)
Title: Method of removing sand and like bridges from wells
IPC: E21B37/00
Filed: 1973-11-09
Abstract: 1448706 Wells &c BIG THREE INDUSTRIES INC 9 Nov 1973 52207/73 Heading E1F A sand bridge 43 is removed from a well by running a tube 33 to adjacent the top of the bridge and whilst lowering the tube through the bridge supplying gas by the tube to fluidize the sand and circulate it from the well. Liquid nitrogen is pumped through a heater 29 to form the gas. If the well is filled with liquid and impurities above the bridge gas may be supplied by the pipe as it descends to the bridge, the gas circulating the liquid and impurities from the well.
Patent GB-1328856-A (GB)
Title: Methods and compositions for fracturing well formations
IPC: C09K8/92
Filed: 1970-11-04
Abstract: 1328856 Wells HALLIBURTON CO 4 Nov 1970 [1 Dec 1969] 52460/70 Heading E1F A well-fracturing composition comprises water, 0.3 to 3.0 percent of galactomannan gum and 0.001 to 0.5 percent of potassium pyroantimonate, pH adjusters, propping agents stabilising agents and internal breakers may be included.
Patent GB-1531770-A (GB)
Title: Syncromesh gear assemblies
IPC: F16D23/06
Filed: 1976-12-16
Abstract: 1531770 Positive clutches IFA GETRIEBEWERKE BRANDENBURG VEB 16 Dec 1976 [23 Dec 1975] 52501/76 Heading F2C In a friction synchronized positive double clutch for a change speed gear wherein initial axial movement of an internally toothed clutch sleeve 3 engageable with teeth 19, 20 on clutch elements 6, 7 acts through a detent 14 and a hub 2 to move synchronizing rings 4, 5 into engagement with friction surfaces on the clutch elements 6, 7, the detent 14 and a detent 10 which centres the hub 2 between the clutch elements 6, 7 comprise spring-pressed balls 14, 10 in stepped radial bores 12 in the hub 2. The spring 13 acting on the ball 14 is stronger than the spring 9 acting on the ball 10 to ensure that the hub 2 moves relative to a shaft 1 to initiate synchronism prior to movement of the sleeve 3 relative to the hub 2 for clutch engagement.
Patent GB-1135036-A (GB)
Title: Bearing arrangement for an electrical machine
IPC: H02K5/00
Filed: 1965-12-10
Abstract: 1,135,036. Bearings. LLOYD DYNAMOWERKE G.m.b.H. 10 Dec., 1965 [10 Dec., 1964], No. 52553/65. Heading F2A. In a bearing arrangement for an electrical machine, especially a cradle dynamometer, having a shaft 10 carrying a rotor which is housed within an independently rotatable housing 12, the shaft 10 runs in roller bearings 11 housed in supporting bushes which are secured to fixed bearing blocks 15, whilst the housing runs on intermediate roller bearings 16 located between the outer surfaces of the supporting bushes and the inner surfaces of circular apertures formed in the bearing end-plates 13 of the housing. In a modification, Fig. 3 (not shown), the bearing plate 13 has oppositely extending annular projections (18, 19) within which the bearings 16, 11 are mounted, the bearing 16 surrounding a bush (17) secured to the block 15 whilst on an oppositely extending portion of the bush is mounted a bearing (23) rotatably mounting a ventilating fan (22) belt driven from a motor (20). In a further modification, Fig. 4 (not shown), the bush (17) is rotatably mounted within block 15 by bearings (23), the fan (22) being secured to the bush.
Patent GB-1216328-A (GB)
Title: Method of controlling the thickness of an oil coating on metal strip
Inventor: EARNSHAW IAN
IPC: B21B45/02
Filed: 1967-11-20
Abstract: 1,216,328. Coating metal strip with oil. STEEL CO. of WALES Ltd. 14 Nov., 1968 [20 Nov., 1967], No. 52694/67. Heading B2E. [Also in Division D1] Prior to coiling, a metal strip is coated with oil and passed through a transverselyextended gas stream which impinges on the oil surface to control the coating thickness. The gas stream may be applied perpendicular to the strip or at an angle of up to 30‹ to this, having a component countercurrent to the direction of motion of the strip. As shown, metal strip 10 is passed through an oil bath 19, and the coating is smoothed by means of gas knives 15 before coiling on a coiler 17. In a modification, the oil may be dipped or sprayed onto the upper surface of the strip, one gas knife employed and the other surface coated by contact with the adjacent wrap when coiled. The strip speed is variable from 25-200 ft./min. The air pressure in the knife is variable between 20 and 60 p.s.i., the width of the nozzle between 0.005 and 0.025 inches, and its distance from the strip between 1/8 and 5/8 inch.
Patent GB-1455848-A (GB)
Title: Overload protection device for counterbalance vehicles
IPC: B66F9/22
Filed: 1973-11-16
Abstract: 1455848 Hydraulic control circuits; actuators EATON CORP 16 Nov 1973 [4 Dec 1972] 53335/73 Headings F1D and F1P In a load-handling vehicle, e.g. a lift truck, Fig. 1 having a primary load member 12, pivotable about a point 14, and a secondary load member 26, slidable on the member 12, an overload device prevents outward movement of the member 12 when the overturning moment about an axis 34 reaches a predetermined value but is over-ridden, so that the member 12 can again move outwards, when the member 26 is lowered. As described, the arrangement of such that the difference between the pressures on opposite sides of the piston 20 of a ram 18, Fig. 2, which tilts the mast 12 of a lift track is proportional to the overturning moment. This pressure difference and the pressure from a chamber 128 below the piston 24 of a ram 22 which raises the forks 26 are applied to an overload device 48 which, in the critical condition, prevents outward movement of the mast or raising of the forks by blocking the supply of hydraulic liquid. In these circumstances the forks can be lowered and when they are in the lowest position the mast is freed and can be tilted outwards. The overload device comprises two spring-loaded spool valves 52, 54, and a check-valve 56. Pressure from opposite sides of the piston 20 is fed to opposite ends of valves 52, 54 and pressure from below the piston 24 is fed to the end of check-valve 56 through the valve 52. When the overturning moment is reached the pressure difference across spools 52, 54 cause them to move to the left in Fig. 2. When the piston 24 is not in the lowest position the spool 88 closes the connection between annular spaces 80, 82, thus, fluid from the chamber 136 cannot return directly through the valve 64. Also it cannot return through the valve 62 because of the check-valve 142. However the forks can be tilted inwards because the check-valve 142 allows fluid to return from the chamber 146. The valve 84 acts to stop further raising of the forks 26 when the overload condition is reached. When overload occurs, the spool moves to the position shown and interupts the supply of fluid from lift valve 46 through line 124 to the chamber 128. However, fluid can return when the forks are lowered through a line 126, check-valve 129 and line 124. Fig. 5 shows the construction of the ram 18. To prevent the pressure in chambers 136, 146 from dropping to zero when the piston 20 contacts the end of the cylinder, rubber seals 180, 188 are provided which close conduits 178, 184 respectively when the piston approaches the end of its stroke. Figs. 6, 7, (not shown), illustrate different valves which may be used in place of the seal 180.
Patent GB-1326912-A (GB)
Title: Musical scale tone-generator
IPC: G10H5/08
Filed: 1970-11-16
Abstract: 1326912 Electrophonic musical instruments PHILIPS ELECTRONIC & ASSOCIATED INDUSTRIES Ltd 16 Nov 1970 [19 Nov 1969] 54432/70 Heading G5J In an electronic piano comprising an oscillator O, connected via a divider chain of digital dividers-by-two B 1 , B 2  ... B m  to a system of AND-gates, N 1 -N n , dividers by 2P, C 1 -C n  and percussion circuits P 1 -P n  operated by the associated key, the frequencies of the tones produced deviate from the equally tempered twelve-tone scale substantially according to a Railsback curve as shown in Fig. 1. In a further embodiment the output of each AND-gate is fed back through a pulse shaper to reset the inputs of the digital dividers B. The tone generator may be used as a tuning apparatus (Fig. 5, not shown) whereby the output of the tone generator is compared with the signal produced by the string to be tuned via a magnetic pick-up by a frequency difference detector. Types of frequency detector are described. The overtones of the instrument to be tuned are filtered out prior to tuning. The filter circuit is described.
Patent GB-1197469-A (GB)
Title: Mixed-phase conversion product separation process
Inventor: WEILAND JACK NATHAN
IPC: C10G5/00
Filed: 1967-11-30
Abstract: 1,197,469. Separating hydrocarbons. UNIVERSAL OIL PRODUCTS CO. 30 Nov., 1967 [30 Nov., 1966], No. 54558/67. Heading C5E. A process for separating a hot, mixed-phase conversion product effluent which contains hydrogen, normally liquid hydrocarbons and normally gaseous hydrocarbons, and which has been derived from the conversion of a hydrocarbon charge stock which boils above 400 F. comprises (a) separating said effluent in a first separation zone without substantial reduction in pressure to provide a first liquid stream and a first vapour stream, (b) cooling said first vapour stream to a temperature within a range of from 60 to 140 F., (c) separating the cooled first vapour stream in a second separating zone maintained at substantially the same pressure as said first separating zone, to provide a hydrogen-rich second vapour stream and a second liquid stream, (d) separating at least a portion of said first liquid stream in a third separation zone at a substantially reduced pressure, to provide a third liquid stream containing normally liquid hydrocarbons, and a third vapour stream, (e) cooling said third vapour stream and combining it with said second liquid stream, (f) separating the resulting mixture in a fourth separation zone maintained at a temperature within a range of from 60 to 140 F., to provide a fourth vapour stream containing normally gaseous hydrocarbons and a fourth liquid stream containing normally liquid hydrocarbons. A portion of the fourth liquid stream may be recycled to combine with the cooled first vapour stream; a portion of the first liquid stream may be recycled to combine with the charge stock to the conversion zone. The process is described with reference to the conversion products of the hydrocracking of a black oil. Details of the hydrocracking process are given.
Patent GB-1501882-A (GB)
Title: Cationic monoazo dyestuffs derived from dioxinobenzthiazoles
IPC: C09B44/20
Filed: 1974-12-18
Abstract: 1501882 Cationic monoazo dyes derived from dioxinobenzthiazoles IMPERIAL CHEMICAL INDUSTRIES Ltd 18 Nov 1975 [18 Dec 1974] 54617/74 Heading C4P [Also in Division C2] Novel dyestuffs devoid of carboxylic and sulphonic acid groups have the formula wherein A is the residue of a 1,3- or 1,4- benzodioxino ring structure fused to the thiazole ring via the benzene ring, B is the residue of a paracoupling amine or an indole, R is an optionally substituted alkyl, alkenyl or cycloalkyl group, and X is an anion. They are prepared by quaternization of dyestuffs of the formula which are in turn prepared by conventional diazotization and coupling. The novel dyestuffs may be used to colour polymeric materials, e.g. polymers and copolymers of acrylonitrile and of dicyanoethylene and also acid-modified polyesters and polyamides.
Patent GB-1197778-A (GB)
Title: Improvements in Fine Grained Gold Alloy.
IPC: C22C5/02
Filed: 1967-12-01
Abstract: 1,197,778. Alloys. HANDY & HARMAN. Dec.1 1967 [Feb. 16, 1967], No.54857/67. Headings C7A and C7D. An alloy having a fine grain structure in the as-cast condition consists, by weight, of:- Au 39À6-75% Ag 0-30% Zn 0-10% Ni and/or Pd 0À025-2% Ru 0À005-0À05% Cu balance (apart from impurities). The alloy is made by adding Ni-Ru or Pd-Ru master alloy to a melt of the remaining constituents.
Patent GB-1111230-A (GB)
Title: Improvements in or relating to hydropneumatic control devices for vices
IPC: B25B1/18
Filed: 1965-12-31
Abstract: 1,111,230. Vices. E. M. TOROSSIAN. 31 Dec., 1965 [8 Jan., 1965], No. 55421/65. Heading B3B. A hydropneumatic control device, for attachment to a vice for locking the jaws, comprises a traction member P connected to the movable jaw M and extended through a stationary seat member S connected to the fixed jaw I, the member P being connected with a cylinder C which is slidably mounted in the seat S and forms a compression chamber 7 therewith for hydraulic fluid, the cylinder having a movable wall or piston 1 therein which divides the cylinder into two parts, one part A forming an hydraulic reservoir which communicates with the hydraulic compression chamber 7 through an orifice 4 in the end of the cylinder and the other part B forming a pneumatic chamber containing a pneumatically operable piston 8, the pneumatic piston having a plunger 9 connected thereto and extending through the movable wall or piston 1 for engaging in the orifice 4 and for movement into the hydraulic compression chamber 7 in response to movement of the pneumatic piston 8. After initial adjustment of the vice by the screw V, the closing and locking of the jaws is carried out by subjecting the pneumatic chamber B to air pressure in three steps. Firstly, compressed air acts on the movable wall or piston 1 so as to force hydraulic fluid from the reservoir A into the compression chamber 7. Secondly, the pneumatic piston 8 is advanced to engage its plunger 9 within the orifice 4 thus closing the hydraulic compression chamber 7. Thirdly, the air pressure is maintained behind the pneumatic piston 8 but the pressure is released from the part A of the cylinder to permit the pneumatic piston 8 to move in the cylinder thereby projecting the plunger 9 into the hydraulic compression chamber 7 so as to produce the necessary high pressure for locking the jaws of the vice. The three successive steps of operation of the control device are attained automatically by the movement of a control valve member 14, Fig. 5, in a chamber 15 which has ducts 21, 22 connected with the cylinder C.
Patent GB-1457872-A (GB)
Title: Polysulphide sealants
IPC: C08G75/02
Filed: 1972-12-01
Abstract: 1457872 Polymeric sealant compositions ALBRIGHT & WILSON Ltd 29 Nov 1973 [1 Dec 1972] 55695/72 Addition to 1396698 Heading C3R A sealant composition contains the reaction product of a polysulphide having terminal -SH groups with a silane having an epoxide group or an ethylenically unsaturated group. The polysulphide has the statistical formula where a is 1-5, b is 0 or 1, c is 1-200, d is 0 to 0À05 c,f is subject to the conditions 0À05 c>/ f>/d, 1>/f and f = dX (No. of free valencies in R<SP>11</SP>-2) R<SP>1</SP> is -O-, -S- or an organic divalent radical free of aliphatic unsaturation consisting of C and H and optionally O and/or S a , in the form of -C-O-C-, -OH or -C-S a -C- links, R<SP>11</SP> is an organic radical free of aliphatic unsaturation and having at least 3 free valencies and consisting of C and H and optionally O and/or S a  in the form -OH or -C-S a -C- links, and the free valencies carrying all the fSH groups and the and R<SP>11</SP>s a  groups being in any order. The silane has the formula Q n SiX (4-n)  where n is 1 or 2, Q is an organic group having an epoxide group, or CH 2 =CR<SP>15</SP>C m H 2m -, where m is 0, 1, 2, or 3, each of R<SP>14</SP> and R<SP>15</SP> which are the same or different, is hydrogen or is an alkyl radical of 1 to 4 carbon atoms, preferably methyl, and at least two X's are organic hydrolysable groups and the remaining group X (if any) is an alkyl group of 1 to 6 carbon atoms or a chloro alkyl radical of 1 to 6 carbon atoms, the silane having a total of only 1 or 2 groups which react with SH in the polysulphide under the reaction conditions. The reaction is carried out at a temperature and for a time and using a quantity of silane such that the proportion of the SH groups of the polysulphide which react with the silane is from 3% to 30%. The products may be blended with 0À1 to 10% by weight of a moisture curing catalyst and also may contain fillers, plasticizers, pigments, thixotropic agents and silane inhibitors. In examples polysulphides having -SH groups are reacted with silanes having vinyl groups and the products are blended with calcium carbonate coated with stearic acid, titanium dioxide, fumed silica, chlorinated polyphenyl, diisopropyltitanium diacetyl acetonate, tetraisopropyl titanate, methyl trimethoxy silane, chlorinated paraffins and carbon black.
Patent GB-1317613-A (GB)
Title: Copying machine
IPC: G03B27/62
Filed: 1970-06-02
Abstract: 1317613 Copiers RICOH KK 2 June 1970 [10 June 1969(3)] 55702/72 Divided out of 1317611 Heading G2A  A cover plate for placing over an original in an electro-photographic copier comprises a rubber or resin plate 8 having stub shafts 9, 10 embedded in or moulded integrally, with the plate for hinging it to bearings 11, 12 of the copier.
Patent GB-1144000-A (GB)
Title: Improvements in and relating to boilers
Inventor: REID WILLIAM HAMILTON
IPC: F24H1/26
Filed: 1966-12-13
Abstract: 1,144,000. Boilers. HAMILTON REID FABRICATIONS Ltd. 8 Dec., 1967 [13 Dec., 1966; 13 July, 1967], Nos. 55784/66 and 32199/67. Heading F4A. Combustion products from a burner flow through a chamber 15 and are reversed at a wall 15b to flow back along a wall 12a before reversing again to flow through channels 12 in contact with the wall 10a of the water chamber 10. The channels 12 are formed by dividing webs welded to both the walls 12a, 10a. In a modification, Fig. 3 (not shown), the gases from the channels 12 flow to the outlet flue through a further annular passage (20) around the water jacket 10.
Patent GB-1345821-A (GB)
Title: Idler gear for changespeed gears
IPC: F16F15/28
Filed: 1971-12-02
Abstract: 1345821 Toothed gearing W SCHAEFFLER and G SCHAEFFLER [trading as INDUSTRIEWERK SCHAEFFLER oHG] 2 Dec 1971 [2 Dec 1970] 56062/71 Heading F2Q A gear-wheel 1, having two tooth systems 5, 6, is rotatably mounted on a shaft 2 by a roller bearing, consisting of rollers 3 in a cage 4, and is adapted to be coupled to the shaft 2 by a synchronizing device, the wheel being characterized in that it has imbalance. A milled-out recess 7 is provided between the two tooth systems 5, 6 to effect the imbalance which loads the bearing at high speeds of the gear-wheel so that the rollers 3 roll continuously instead of sliding.
Patent GB-1406659-A (GB)
Title: Speed control system for a vapour engine
IPC: F01D17/20
Filed: 1972-12-06
Abstract: 1406659 Automatic control of speed THERMO ELECTRON CORP 6 Dec 1972 [6 Jan 1972] 56227/72 Heading G3R The speed of a vapour engine expander is controlled by means of a stepping motor actuated throttle valve supplied with pulses at a rate which is proportional to a speed error signal derived from comparison of the actual speed of the expander and the desired speed. The expander 13 of vapour engine plant 11 drives an alternator 35 whose output is used as a speed signal and is shaped to produce a squarewave signal at 37. A monostable multi-vibrator 39 is triggered by the squarewave signal to produce standard length reference pulses which open gate 41 to allow capacitor Cl to charge positively and the squarewave signal pulses after inversion open gate 53 to charge capacitor Cl negatively. The voltage on capacitor Cl thus represents the speed error and its polarity the direction in which the error exists (i.e. fast or slow). The polarity is used to set circuits 33 controlling the selection of coils to which the pulses from pulse generator 59 are applied. The value of the voltage derived at 57 is used to control the output rate of pulse generator 59 whereby the stepping motor moves the valve 21 at a rate proportional to the speed error and in a direction to remove the error. A manual control facility 46 is provided. The differentiating R.C. network Rl, R2, C2 provides a faster response and it is stated that to obtain a different controlled speed the duty cycle of the monostable circuit 39 is changed.
Patent GB-1148629-A (GB)
Title: s-triazolo(1,5-a) pyrimidines substituted in the 7-position by a basic group
Inventor: TENOR ERNST
IPC: C07D487/04
Filed: 1966-12-19
Abstract: 1,148,629. s - Triazolo - [1,5 - a] - pyrimidines. DEUTSCHES HYDRIERWERK RODLEBEN VEB. 19 Dec., 1966, No. 56808/66. Heading C2C. s-Triazolo-[1,5-a]-pyrimidines I of Formula I, in which each of R 1  and R 4  is a hydrogen or halogen atom or a C 1-4  alkyl or alkoxyalkyl group or an aralkyl or aryl group which may be substituted in the nucleus, R 2  is a hydrogen or halogen atom or a C 1-4  alkyl, alkenyl, aralkyl or aryl group and R 3  is a free amino group, an amino group substituted by one or two alkyl, cycloalkyl, alkenyl, hydroxyalkyl, alkylaminoalkyl, alkoxy, heterocyclic or possibly substituted aryl or aralkyl groups, or R 3  is a hydrazino, guanidino, tertiary cyclic amino or basically-substituted, straight or branched chain C 2-4  alkoxy group, the basic group being any one of the aforementioned amino, substitutedamino, guanidino, hydrazino or cyclic amino groups, are prepared by (a) reacting a compound II of Formula II, in which R is a halogen atom or a mercapto, alkylthio or alkoxy group with a compound of formula R 3 H, in which R 3  is an amino, substituted-amino, hydrazino, guanidino or tertiary cyclic amino group, to give the compounds I in which R 3  is as defined immediately above, or (b) reacting a compound II, in which R is a chlorine or bromine atom, with the sodium compound of an appropriate basically-substituted alkanol, to give the compounds I in which R 3  is a basically-substituted C 2-4  alkoxy group. The compounds I have a coronary vasodilative effect.