baber/WOPTO huggingface dataset:
Patent GB-1220796-A (GB)
Title: Internal explosive cladding of tubes
IPC: B23K20/08
Filed: 1969-06-24
Abstract: 1,220,796. Welding by pressure. E. I. DU PONT DE NEMOURS & CO. 24 June, 1969 [27 June, 1968], No. 31914/69. Heading B3R. In explosively cladding the internal surface of a hollow metal body having an internal cylindrical passage by arranging the cladding body with its internal cylindrical passage coaxial with the passage in the metal body and with a uniform stand-off therebetween and with a coaxially arranged explosive within the cladding body of detonation velocity less than 120% of the sonic velocity of the metal having the highest sonic velocity in the system, an explosive of detonation velocity 1800-3000 metres/ sec. is used for at least part of the system length and at the initiation end the explosive loading and/or the detonation velocity of this portion is increased over the values for the remainder of the explosive, the velocity of this portion being less than 3500 metres/sec. The hollow metal body may be thick or thin walled, elongated or stubby and the external surface being of square, rectangular or cylindrical cross-section. The different components of the explosive charge may have different composition or the same composition packed to different densities, or different particle size or different axial diameters and may be solid, semi-solid or liquid. Iron, titanium, zirconium, aluminium, columbium, tantalum, nickel, copper or alloys of these metals may be explosively bonded. In an embodiment a thick-walled tube 1 is supported on wooden blocks 4, 5 on a wooden pallet 6, a metal liner tube 2 is arranged coaxially within the tube 1 and supported on a wooden block 7 with a uniform gap 3 between the tubes maintained by upper blocks 4 glued to the tube 1 and nails 17, 17<SP>1</SP> in lower blocks 4, granular explosive 12 is packed up to line 13 and granular explosive 14 is packed above the line 13. A thin disc 15 of high explosive is arranged above the explosive 14 for detonation. In an example the tube 2 is of stainless steel, the tube 1, a nozzle, is of forged steel, the explosive 12 is of salt 55% and amatol 45% of such particle size that the detonation velocity is 2650 m.p.s. and the explosive 14 is of the same composition but of finer particle size to give a detonation velocity of 3350 m.p.s. A wavy bond results; the projecting ends of the liner being sheared off. In another example the finer explosive is used throughout but packed to lower density in lower part. Titanium and Inconel (Registered Trade Mark) liners may be welded to steel nozzles, an extension ring having been welded to the initiation end of the nozzle to promote improved bonding. To permit shearing off of the longer liner tube the latter may be provided with circumferential notches.
Patent GB-320584-A (GB)
Abstract: 320,584. Hemmingsen, T. V. Jan. 23, 1929. Addition to 307,100. Cylinders receiving liquid fuel. - In twostroke-cycle engines of the kind claimed in the parent Specification wherein the scavenging air is admitted through piston-controlled ports 2, and the exhaust passes out through ports controlled either by a sleeve valve or an auxiliary piston 6 or 14, the exhaust ports are made of less area than the admission ports in order to increase the pressure within the cylinder at the end of the scavenging period. The air stream is diverted tangentially to a cylindrical surface within the cylinder and the fuel is injected substantially tangential to this stream.
Patent GB-1070442-A (GB)
Title: Flow directing centrifugal countercurrent contacting apparatus with jet mixing action
IPC: B01F9/00
Filed: 1964-08-07
Abstract: 1,070,442. Centrifugal countercurrent liquid contacting apparatus. DRESSER INDUSTRIES Inc. Aug. 7, 1964 [Aug. 22, 1963], No. 32146/64. Heading B1F. A countercurrent centrifuge for contacting two at least partially immiscible liquids of different densities comprises a cylindrical chamber rotatable about a horizontal axes, in which the axial direction of flow of the liquid phases in the contacting zone is controlled by the shape of annular passages formed between two or more rings (122, 123, see Fig. 3). The light phase enters through pipe 104 and passes through perforated sections 122a, 122e, 123c and 123d of coaxial rings 122, 123, and leaves via 107. The heavy phase enters at 106, passes through perforated sections 122e, 123a, 123e and leaves at 120 via ports 120a. The two phases flow in the same direction in the annular passageways, and thus mix and then separate. The reactions between the perforate sections are imperforate. Rings 124' and 125' are specially perforated to prevent channeling towards the outlets 107 and 120a.
Patent GB-153907-A (GB)
Title: Belt shifter for use with stepped pulleys
IPC: F16H7/22
Filed: 1920-11-15
Abstract: 153,907. Kleckler, F. G. Nov. 14, 1919, [Convention date]. Variable -speed belt gearing. - In stepped-pulley gearing for use on lathes &c., main operating-levers 20, 21 adjustably pivoted on arms 16, 18 secured on a standard 14 are operated through a connexion 28 by a hand-lever 22 similarly mounted, the levers 29, 30, carrying the pivoted belt forks or sleeves 42, 43, being pivoted on the ends of the levers 20, 21. Levers 33, 34 carrying adjustable weights 38 are pivoted on the levers 20, 21 and have toothed ends 33', 34<1> engaging with toothed ends 30<1> on the levers 29, 30, so that the levers 29 or 30 moving the belt 7 from a large to a small step remains firmly in alinement with its operating-lever 20 or 21. the other lever 30 or 29 being swung by the resist. ance of the belt so that its weighted lever 34 or 33 moves out at right-angles to the lever 21 or 20 and rapidly shifts the belt on to the larger step as soon as resistance is removed by the belt moving to the small step on the other pulley.
Patent GB-992729-A (GB)
Title: Improvements in or relating to methods of alloying material to semiconductor bodies
Inventor: WADEY RAYMOND CLARENCE CHANCE
IPC: H01L21/24
Filed: 1962-08-22
Abstract: 992,729. Semi-conductor devices. MULLARD Ltd. Aug. 22, 1962, No. 32255/62. Heading H1K. In a method of alloying material to an area of a semi-conductor body the body 1, Fig. 1, and two amounts 6, 7 of material are placed at different locations in the jig with said area 2 inclined to the horizontal. After heating to melt the first amount the jig is tilted to the position shown with the area horizontal to allow amount 6 to flow on to it. Subsequently the jig is tilted further when the second amount 7 is molten to run it into an intermediate position D from which it flows to the area when the jig is returned to the position shown. In a typical method, the jig for which is shown in Figs. 2 and 3, an indium pellet 23 and N-type germanium wafer 19 are positioned as shown and the remaining parts of the jig assembled about them. The jig parts are located by dowels 15 and held together by clips 16 provided with a spindle (not shown) for tilting. An indium pellet and an indiumgermanium-aluminium pellet are placed at opposite ends X, A of contoured U-shaped channel 4, 5. After heating in hydrogen to remove oxide layers from the pellets the temperature is reduced to 400 C. and the jig tilted forward 45 degrees to the position shown. This allows the pellet at X to reach the wafer via channel 3 and the other pellet to reach B. After 30 seconds alloying the jig is tilted forward 45 degrees so that the other pellet reaches C and then returned to the position shown to allow the pellet to run downhill to the wafer. 30 seconds later the jig is inverted, and indium pellet 23 falls on the wafer and is alloyed to it. Specification 907,568 is referred to.
Patent GB-467970-A (GB)
Title: Improvement in production of morphaline alkanols
IPC: C07D295/088
Filed: 1935-11-21
Abstract: A morpholine alkanol is produced by hydrolyzing a morpholine alkyl vinyl ether and isolating the product thus obtained, preferably using acid hydrolytic agents and decomposing the morpholine alkanol salt by alkali.  A morpholine alkanol may also be isolated from a mixture of amines obtained by reacting a b b <1>-dihalogenated dialkyl ether with ammonia or with a morpholine, preferably at super-atmospheric pressures, the reaction mixture being maintained alkaline during the reaction, treating the reaction mixture with a solution of caustic alkali, concentrating the product thus obtained, preferably in acid solution, and separating therefrom an amine layer, by fractionally separating said layer and collecting the fraction containing the morpholine ethanol.  The isolation of the morpholine alkanol from the mixture of amines may be effected by fractional crystallization or fractional distillation, if desired under reduced pressure, and the reaction mixture referred to may be maintained alkaline during the reaction by excess of ammonia or the morpholine, or by caustic alkali.  In examples, b b <1>-dichlordiethyl ether is reacted with excess ammonia under pressure, and the alkali-treated reaction mixture is then worked up by distilling off the free amines, extracting the residue with benzene, and either adding the benzene extract to the amine distillate, refractionating, and collecting the fraction boiling from 215 to 235 DEG  C. under atmospheric pressure or adding hydrochloric acid to the amine distillate, concentrating by evaporation, treating the residue with sodium hydroxide, separating the amine layer so obtained from the caustic layer, extracting the latter with benzene and fractionating the combined benzene extracts, collecting the fraction boiling at 203--235 DEG  C. under atmospheric pressure.  Also in further examples, the dimethyl morpholine ethyl vinyl ether, produced according to example 5 of Specification 462,383 is boiled with excess concentrated hydrochloric acid, and morpholine ethanol vinyl ether is boiled with 30 per cent sulphuric acid, the morpholine ethanols being isolated by treatment with alkali and fractionation. Specification 457,481 also is referred to.  The Specification as open to inspection under Sect. 91 refers to the catalytic vapour phase hydrogenation of morpholine alkyl vinyl ethers to form morpholine alkyl ethers, at a temperature above the boiling point of the ether being produced.  This subject-matter does not appear in the Specification as accepted.
Patent GB-520557-A (GB)
Title: Improved method of and means for producing or finishing gear teeth by a grinding or honing operation
IPC: B23F23/12
Filed: 1938-11-08
Abstract: 520,557. Grinding gear wheels. COVENTRY GAUGE & TOOL CO., Ltd., WAINWRIGHT, J. E., and HARLEY, S. J. Nov. 8, 1938, No. 32317. [Class 60] [Also in Group XXII] A gear b to be ground or honed by the generating process by a helically grooved wheel a is driven by a gear train b<SP>1</SP> ... b<SP>6</SP> from a shaft d that also drives the grinding wheel a at a3 and a crushing roller for trueing the wheel at c3. The wheel a is mounted on a slide for movement between the grinding and trueing positions without disturbing the gearing. The roller c may be given a rapid movement into and out of contact with the wheel during the dressing operation, for example by means of a slide, cam, and spring as described in Specification 519,081. The gear spindle d<SP>1</SP> is moved parallel to the plane of grinding by a screw and worm wheel nut f driven by a motor i. When helical gears are being ground the spindle is set over to the required angle by means of bolts k engaging an arcuate slot, the gear train b<SP>2</SP>, b<SP>3</SP> being arranged to permit the necessary adjustment. The dressing roller may also be adjustable according to the helix angle, and a clutch may be provided for disconnecting the drive to the roller.
Patent GB-1442425-A (GB)
Title: Power supply control systems
IPC: H04N5/00
Filed: 1973-07-06
Abstract: 1442425 Switching systems for power supplies SONY CORP 6 July 1973 [6 July 1972] 32342/73 Heading H2H [Also in Division H3] A circuit for controlling the power supplied to a load such as a television receiver 1 comprises a flip-flop 6, a power switch SW2 controlled by the flip-flop in response to a trigger signal applied to the flip-flop by a circuit 9-15b and a manually controllable switch SW1. An ultrasonic signal from a remote transmitter is received by a microphone 9 and, after amplification, filtering and detection by the circuits 10-12, is supplied as the trigger signal to terminal 8 of the flip-flop. Assuming the manual switch SW1 to have been closed, successive trigger signals change the states of transistors 7a, 7b to successively energize and de-energize a relay winding 3. The relay winding controls the switch SW2 which connects and disconnects the power supply 2 to the receiver 1. A time constant circuit 17, 19 ensures that when the circuit is initally supplied with power the transistor 7a is turned off thereby preventing inadvertent closure of the switch SW2 when power returns, for example after a power failure.
Patent GB-646072-A (GB)
Title: Improvements relating to the control of electric motors
IPC: H02P7/00
Filed: 1947-12-09
Abstract: 646,072. Control of motors. WINGFOOT CORPORATION. Dec. 9, 1947, No. 32481. Convention date, May 23, 1947. [Class 38(iii)] Mechanism having a predetermined operational cycle is driven by an electric motor, a power circuit is provided for actuating said motor and control means render said circuit inoperative at the end of said cycle, re-setting means operable at the end of the cycle drive the motor in a forward or reverse direction to re-set said mechanism at the desired initial position, additional power circuit means being controlled by means moving with said mechanism for actuating said motor to drive said motor in a direction toward its initial position if and when said mechanism is located at other than said initial position when the first circuit becomes inoperative. A reversible electric motor 16 drives a shaft 1 which is provided with oppositelythreaded portions 17 and 18 carrying nuts 19 and 20 mounting stitcher mechanism for a tyre-building machine. As the motor 16 reverses, the members 19 and 20 move towards and away from each other to carry the stitcher across the surface of the tyrebuilding drum. A shaft 25 is coupled to the shaft 1 through an electromagnetic clutch 33 and drives a control shaft 2 for a motor controller 3 through alternatelyeffective clutches and gear mechanism so that the control drum is always rotated in the same direction despite reversals of the shaft 1. Initially a push-button is actuated to de-energize a solenoid 36, a spring- biassed plunger being withdrawn from a notch in a cam 37 which is fixed to the shaft 2. A switch 39 is simultaneously operated to effect engagement of the clutch 33. A delayed-action switch closes the motor circuit for forward operation and, when switch 11 is closed by cam 7, a circuit to the motor independent of the pushbutton is completed. Reversal takes place when switch 12 is closed by cam 8 and switch 11 leaves cam 7, interlocks being provided to prevent simultaneous closure of the forward and reverse motor-connections. When switch 13 is closed by cam 9 the solenoid 36 is energized so that the plunger 34 engages the surface of the cam 37 until it enters the notch therein. The switch 39 opens to disengage the clutch 33 and the shaft 2 is locked in a suitable position for the next operation. The drum over-runs sufficiently to allow cam 10 to engage switch 14 and at the same time switch 12 is opened to stop the motor. The switch 14 completes a circuit rendering effective re-set mechanism comprising a cam 44 on the end of the shaft 1 which cooperates with switches 45 and 46. When the shaft is not correctly aligned, a roller on an arm of one of the switches rides on the cam surface 47 and closes a circuit to the motor which turns the shaft into its correct position. The shaft 2 carries a pulley 40 supporting a weight 43 which prevents excessive over-run of the shaft when the clutch 33 is disengaged.
Patent GB-676770-A (GB)
Title: Improvements in or relating to phenol production
IPC: C07C39/08
Filed: 1948-12-16
Abstract: The processes of Specification 676,772 for oxidizing compounds Ar-CHR1R2 to peroxides Ar-CR1R2-OOH and of Specification 676,771 for decomposing the peroxides to phenols and ketones are operated successively and continuously, the unreacted compound Ar-CHR1R2 being separated from the reaction mixture, purified and recycled; in the formul  Ar is an aryl group which may be alkyl-substituted and R1 and R2 are the same or different alkyl groups.  The reactants, catalysts used and reaction conditions are similar to those given in the Specifications mentioned above.  Examples show the conversion (via the peroxide) of (1) cumene to phenol, (2) p-cymene to p-cresol, and (3) diisopropylbenzene to hydroquinone, acetone also being produced. Other suitable starting materials are sec.-butyl-benzene, p-ethyl-isopropylbenzene, isopropylnaphthalene and others given in Specification 676,772. Specification 626,095 also is referred to. The Specification as open to inspection under Sect. 91 includes the additional catalysts for decomposing the peroxides that are mentioned in Specification 676,771.  This subject-matter does not appear in the Specification as accepted.
Patent GB-446982-A (GB)
Title: Improvements in furnaces
IPC: F23H7/00
Filed: 1934-11-13
Abstract: 446,982. Boiler &c. furnaces. BRITISH HEATING INDUSTRIES, Ltd., and WIGNALL, N., Beehive Works, Bolton. Nov. 13, 1934, No. 32701. [Class 51 (i)] A furnace comprises two fire-grates c each separately supplied with fuel by a gravity feed so as to maintain substantially uniform but different thicknesses of the fuel beds a, b, a combustion chamber d common to the two fuel beds and means for dividing the primary air supply so that that supplied to the thicker bed a is insufficient for complete combustion while that supplied to the thinner bed is in excess, such excess being admitted as heated secondary air to the combustion chamber to effect complete combustion of the gases issuing from the thicker bed. The primary air to the ashpits e, f is supplied by either natural or forced draught through trunks g, h having dampers for controlling the separate supplies. The two grates may be arranged in V-formation as shown or may be arranged in line.
Patent GB-759632-A (GB)
Title: Apparatus for mechanically working plastic masses
IPC: B01F5/00
Filed: 1953-11-25
Abstract: 759,632. Mechanically working plastics materials. WACKER-CHEMIE GES. Nov. 25, 1953 [Nov. 25, 1952], No. 32786/53. Addition to 758,513. Class 86. An improvement in or modification of the invention of the parent Specification consists in providing the working surface of the rotary member 1 with ribs 5 which extend radially across part of the working space only and are inclined to the genatrix of the cone. The spacing between the ribs, and their inclination relatively to the genatrix of the cone can be changed, for which purpose interchangeable conical sleeves to fit the member 1 are provided, each having different arrangement of ribs 5.
Patent GB-1032728-A (GB)
Title: Improvements in and relating to polymers
IPC: B29C48/03
Filed: 1963-08-20
Abstract: A composition for high extrusion speed wire insulation comprises a first ethylene polymer having a density of from 0.915 to 0.925 and per 100 parts thereof from 2 to 66.7 parts by weight of a second ethylene polymer having a density above 0.939 and a melt flow at 440 p.s.i. and 190 DEG  C. of 3 and less.  The highdensity polymer may be a copolymer of ethylene with up to 10% of an a -olefin such as butene-1.  The low-density polymer may be a copolymer of ethylene with up to 10% of one or more copolymerizable organic compounds, such as those having the ethylene linkage, a number of which are listed. Conventional fillers, extenders, opacifiers, modifiers and stabilizers may be added.
Patent GB-509672-A (GB)
Title: Improvements in and relating to machines for producing upholstery
IPC: B68G7/04
Filed: 1938-11-11
Abstract: 509,672. Upholstery stuffing-apparatus ; sewing-machines. BRIGGS MANUFACTURING CO. Nov. 11, 1938, No. 32848. Convention date, Feb. 18. [Class 52 (iv)] [Also in Group VII] Pleated upholstery with a layer of padding between sheets of fabric stitched along spaced lines is produced in a machine having scoring discs to compress the padding in line with the sewing needles. The foundation fabric 22 and padding 19 are fed between a series of lower belts 31 and a pair of upper divergent spiked belts 35 which grip the edges and tension the fabric as it approaches the needles 69. A row of scoring discs 63 compress the padding along lines 62 before it reaches the platform 15 on which the cover pieces 16 are stacked. The latter are manually positioned and pass beneath a spaced series of weighted belts 46, and the whole assembly is further compressed by a second row of scoring discs 65 adjacent the presser feet 66. After stitching, the fabric is stripped from the spiked belts by a bar 80.
Patent GB-1130905-A (GB)
Title: Process for the preparation of tertiary amines
IPC: D06M13/463
Filed: 1967-07-18
Abstract: 1,130,905. Preparation of tertiary amines. BAIRD CHEMICAL INDUSTRIES Inc. 18 July, 1967 [18 July, 1966; 2 Feb., 1967; 23 Feb., 1967], No. 33000/67. Heading C2C. Tertiary amines are prepared by reacting an alkyl chloride with ammonia, a primary amine of formula R<SP>111</SP>NH 2  where R<SP>111</SP> is an alkyl, hydroxyalkyl, alkoxyalkyl or hydroxyalkoxyalkyl group having from 1 to 4 C atoms or an aralkyl group wherein the alkyl group has from 1-4 C atoms or a dialkanolamine; or an alkyl bromide with ammonia or a dialkanolamine in the presence of a soluble iodide catalyst. The alkyl halides preferably have from 4 to 22 C atoms and the process is carried out within the temperature range 80-200‹ C. The reaction is generally performed as a twophase system wherein the first phase is organic and comprises the alkyl halide and the second phase is aqueous and comprises water and/or a low molecular weight alcohol of 1-6 C atoms, preferably isopropanol. The catalyst is usually an alkali metal iodide such as potassium iodide. During the reaction an alkaline material such as caustic soda is added in controlled amounts.
Patent GB-628137-A (GB)
Title: Improvements relating to cloches
IPC: A01G13/04
Filed: 1946-11-07
Abstract: 628,137. Cloches. COUVE, N. Nov. 7, 1946, No. 33174. [Class 20(i)] In a cloche comprising a pair of glass &c. panels 5, 5A, Fig. 1, mounted in mutually inclined position on a framework 1, with means 10 for connecting and retaining the panels so as to permit the adjustment of one panel to vary the space between the adjacent top edges of the panels, as described in Specification 583,379, the framework 1 is adapted to support a second pair of lower panels 2 and retaining means 6 are provided to prevent their outward displacement. Feet 4 secured to the sup. porting members 1 support the lower edges of the upper panels 5, 5A. The members 6, each consisting of a piece of springy wire, engage between the supports 1 as shown in Fig. 4, with portions 7 bearing against or close to the bottom edges of the panels 5, 5A, and thus prevent the lower panels 2 from being blown outwards by the wind. The members 6 also serve to hold apart the two panel supports 1 in correct spaced relation.
Patent GB-427873-A (GB)
Title: Regulating device for centrifugal separators
IPC: B04B11/02
Filed: 1934-11-20
Abstract: 427,873. Float valves. AKTIEBOLAGET SEPARATOR, 8, Fleminggatan, Stockholm. Nov. 20, 1934, No. 33368. Convention date, Nov. 22, 1933. [Class 135] A float valve for controlling the supply of liquid to a centrifuge comprises a float 2 with a neck portion 4 the top end of which co-operates with a valve seating 6 to regulate the supply of liquid from a pipe 3 through the neck 4 to the float chamber 1, from which it passes through the outlet 8. The passage 4 in the float increases in cross-section in the direction of flow in order to decrease the velocity of flow at the outlet orifice.