baber/WOPTO huggingface dataset:
Patent GB-992940-A (GB)
Title: Improvements in or relating to control knobs and like assemblies
Inventor: HICKLING HUBERT ROY
IPC: G05G1/12
Filed: 1960-12-01
Abstract: 992,940. Securing knobs on shafts. MINISTER OF AVIATION. Jan. 31, 1962 [Dec. 1, 1960], No. 41314/60. Heading F2U. A potentiometer control knob 12 is secured on a shaft 1 by an externally coned axially split collet 4 contracted on to the shaft 1 by drawing a coned bore in the knob over the collet taper 8 by screwing a cap 13 on the outer end 5 of the collet, the collet being locked to the shaft by a diametral pin 7 engaging slots in the collet 8 and an openended slot 3 usually provided in the end of the potentiometer shaft 1. Axial movement of the collet is prevented by an internal shoulder 9 engaging a groove in the shaft 1. The pin 7 additionally projects at one end to engage positively a groove in the knob. An undercut 11 on the collet 4 increases flexibility of the taper skirt 8.
Patent GB-865604-A (GB)
Title: Improvements in and relating to magnetic recording and reproducing apparatus
IPC: G11B20/14
Filed: 1959-12-04
Abstract: 865,604. Reading digital data. INTERNATIONAL BUSINESS MACHINES CORPORATION. Dec. 4, 1959 [Dec. 4, 1958], No. 41346/59. Class 106 (1). A magnetic recording and reproducing apparatus includes a magnetic recording surface, means for recording information on the surface at a predetermined frequency for one type of information and at an even multiple of said frequency for another type of information, and a magnetic transducer for reproducing said information having a gap positioned in reproducing relationship to said surface, the gap width being equal to the wavelength of the even multiple of the predetermined frequency. Preferably the even multiple is two. In recording digital information on a magnetic surface where the transducer gap width # is equal to the length of the bit cell a single change of flux 14 within the cell records information of wavelength #/2 while a double change of flux 16 records information of wavelength. As indicated in Fig. 1 a minimum field. is set up in coil 12 for information of wavelengths an even multiple of #/2, in particular #. This effect may be used in reading information recorded, e.g. by the Ferranti method 18 (Fig. 3) in which a flux change in one direction represents a 1 and in the other direction a 0; here, consecutive bits of the same character produce a double flux change within a bit cell but in changing from a bit of one character to the other only a single flux change results. Another method. 19 is that in which a positive pulse records a 1 and a negative pulse a 0; on read-out the same information is given as in the Ferranti method. The effect may also be used for read-out of the double pulse method, of recording but is not applicable to the method of curve 20 (NRZ1) in which a flux change indicates a 1, no flux change a 0. Using a transducer head having the gap width as defined in conjunction with the specified writing methods is stated to reduce distortion of read-back signal due to phase-shift and amplitude deterioration which normally occurs when reading high bit densities. A read-out circuit is described (Fig. 6A, not shown).
Patent GB-1522495-A (GB)
Title: Device for temperature compensation in a pressure medium circuit
IPC: F15B21/045
Filed: 1975-10-09
Abstract: 1522495 Telemotors SAAB-SCANIA AB 9 Oct 1975 [14 Oct 1974] 41467/75 Heading F1P [Also in Division F4] A device for compensating temperature dependent volume variations in a movement transmitting . pressure medium circuit, e.g. a motor vehicle hydraulic system for adjusting headlamp tilt in response to changes in the vehicle body attitude k comprises a movement transmitting member 21 attached to a support ring 25 free to move with respect to a pipe 22 and a further flexible, variable volume member 23 which compensates for temperature dependent volume variations in the volume of the main member 21. As shown, in one embodiment the members 21, 23 are bellows units. If the temperature increases to expand the pressure medium in the main bellows 21 and tending to increase a dimension k between the bellows end and the pipe end 28, then the pressure medium within further bellows 23, 24 also expands and extends the inner bellows 23 whilst the outer bellows 24 contract because of the diameter differential. The support ring 25 thus moves away from the pipe end 28 and the bellows 21 is thereby contracted to reduce the dimension k. In another arrangement, the outer bellows 24 is replaced by a coiled spring and the bellows 23 is sealed at both ends to the pipe 22.
Patent GB-1355753-A (GB)
Title: Digital displacement and displacement rate signal generator
IPC: G06J1/00
Filed: 1972-09-07
Abstract: 1355753 Digital altimeter BENDIX CORP 7 Sept 1972 [16 Sept 1971] 41606/72 Heading G4H In a digital altimeter, an analogue pressure rate signal P s  is multiplied at 10 by a digital signal from a read only store 18 to give an analogue altitude rate signal Hp which is digitized at 12 and integrated at 14 to give the digital altitude output signal Hp. P s  is derived by a feedback loop including read only stores 20, 22 for deriving a digital pressure signal P s  and matching this to the sensor characteristics respectively, D to A converter 24 and subtraction circuit 4. 1% rate signal is added to Hp at 9 to stabilize the feedback loop. The sensor may be solid state.
Patent GB-1152476-A (GB)
Title: Method For Controlling The Temperature In A Polymerisation Process
IPC: C08F36/04
Filed: 1966-09-19
Abstract: 1,152,476. Polymerizing dienes. PHILLIPS PETROLEUM CO. 19 Sept., 1966 [20 Sept., 1965], No. 41649/66. Heading C3P. Polymers of conjugated dienes are made by catalytically polymerizing one or more dienes in the presence of a liquid hydrocarbon solvent or diluent which is supplied into the reaction zone at least partially in solid form, and melted during polymerization. The polymerization may be effected in a series of separate reactors to which diluent alone, or admixed with the diene, is supplied solid only to the first reactor. The amount of diluent supplied may be automatically controlled by the temperature in the reactor, preferably 25‹ to 75‹ F. The catalyst is preferably the product formed on mixing (i) an organometallic compound of the formula R n M, where R is alkyl, M is Al, Ga, In, Hg, or Zn, and n is an integer equal to the valency of M, (ii) a compound of the formula TiX 4 , where X is halogen, and (iii) elemental iodine. Suitable solvents or diluents are benzene, tetradecane, pentadecane, hexadecane, heptadecane, octadecane, cyclohexane, and para-xylene. Specified dienes are butadiene, 1,3-pentadiene, 1,3-hexadiene, piperylene, isoprene, octadiene, and mixtures. Styrene may also be a comonomer. A flow diagram is given of a continuous process.
Patent GB-1358418-A (GB)
Title: Fluorine-containing block copolymers
IPC: C08F283/06
Filed: 1971-09-07
Abstract: 1358418 Polyperfluoroether block copolymers MINNESOTA MINING & MFG CO 7 Sept 1971 [8 Sept 1970 2 Aug 1971] 41751/71 Heading C3P A block copolymer containing a polymer block derived from an ethylenically unsaturated fluoro-monomer and a perfluoroether polymer block may be obtained by (a) contacting a solution of a diacyl halide terminated perfluoroether polymer of formula with an alkali or alkaline earth metal peroxide to form a poly(acyl peroxide) of formula and contacting an unsaturated fluoro monomer therewith to form the block copolymers containing alternate ether and ethylenic polymer blocks, or (b) contacting the unsaturated monomer with a polyperfluoroetherperoxide of formula whereby a like alternating block structure is formed from the reaction of the monomer with the diradicals formed by cleavage of the above polyperoxide. In the above, R<SP>f</SP> is fluorine or lower perfluoroalkyl, a is 0 or 1, g is at least 4, h, m and n are 0 or 1 to 200, but no more than two of h, m and n being zero simultaneously, x is the degree of polymerization, X is halogen, Y is -CF 3 , -COF, -CF 2 COF or and p is an integer with the ratio of p/h + m + n being less than 0À5, -(O) p - representing oxygen atoms randomly distributed along the chain and linked in peroxide form to the perfluoroether polymer groupings. In the examples, peroxy polyethers containing [OC 2 F 4 ] and [OCF 2 ] units are reacted with CF 2  = CH 2 , CF 2  = CH 2 / CF 3 .CF = CF 2 , or CF 2 =CF.Cl, at room temperature, by heating or with irradiation.
Patent GB-1521795-A (GB)
Title: Production counter for a corrugator
IPC: H03K21/38
Filed: 1976-10-07
Abstract: 1521795 Counting apparatus MOLINS MACHINE CO Inc 7 Oct 1976 [15 March 1976] 41751/76 Heading G4D In a predetermined counter, to provide a warning a selected number of events before the predetermined count, the count of events in 28 is cyclically incremented from and decremented to its true value while compared at 20 to the predetermined count in 18, and on detecting a coincidence between the event count, at a selected increment from its true value, and the predetermined count, producing a warning signal. As described, the counter is used to count sheets cut from a web in a corrugator and its count may be selectively decremented at 108 to account for scrap sheets.
Patent GB-1145634-A (GB)
Title: Process for the continuous preparation of polyesters
IPC: C08G63/78
Filed: 1967-09-14
Abstract: 1,145,634. Polyesters. INVENTA A.G. FUR FORSCHUNG UND PATENTVERWERTUNG ZURICH. 14 Sept., 1967 [16 Sept.. 1966], No. 41934/67. Heading C3R. Fibre-forming polyesters are prepared by a continuous direct esterification of glycols with terephthalic acid or other dicarboxylic acids or mixtures thereof, optionally in the presence of hydroxycarboxylic acids. The first stage is a reaction of glycol and acid at 150-250C. and pressures up to 50 atmospheres to obtain a precondensate which is then mixed with a previously formed precondensate and the mixture further polymerized at 25-100 mm. Hg, with removal of water and excess glycol until it has a degree of polymerization of 2 to 6 and is substantially free of carboxyl groups. Part of the precondensate may be further polymerized whilst the remainder is recycled to be mixed with the esterification product. In an alternative embodiment, part of the glycol starting material is separated from the remainder and is reacted in a glycolysis reaction with the recycled precondensate at a point upstream of the point at which the esterification product is mixed in; this reaction may take place at 200-250 C. at atmospheric pressure or above. The reactions may be catalysed.
Patent GB-1142037-A (GB)
Title: Microwave tube apparatus having an improved slot mode absorber
IPC: H01P1/162
Filed: 1966-09-21
Abstract: 1,142,037. Magnetron oscillators. S-F-D LABORATORIES Inc. 21 Sept., 1966 [19 Oct., 1965], No. 42194/66. Heading H1D. Slot-mode resonance in a multi-cavity magnetron is prevented by a suppressor arranged adjacent to the slots, the suppressor comprising a lossy member having a metallic sleeve bonded to it on the side remote from the slots. As shown, the magnetron comprises radial vanes 52 surrounding a cathode 59 and defining a circular array of resonant cavities. These are coupled to an annular cavity 51 by means of a circular array of axially-directed slots 53. The unwanted slot mode is suppressed by means of an annular member 55 consisting of carbon-impregnated alumina or beryllia having one surface metallized with a mixture of manganese, titanium, molybdenum or tungsten. This surface is brazed to a copper sleeve 61 which is in turn brazed to the polepiece 57 of the magnetron. Modifications are described in which: (a) the sleeve 61 fills the whole space between the member 55 and the polepiece, (b) the member 55 is brazed directly to the polepiece. The invention may be applied to the type of magnetron having an annular cathode adjacent to an annular array of resonators which surrounds a central cylindrical cavity (Fig. 2, not shown). This is tuned by means of a disc supported on the end of an axially movable plunger. The output comprises an axiallydirected waveguide.
Patent GB-1321540-A (GB)
Title: Current limitting element
IPC: H02H9/02
Filed: 1971-09-10
Abstract: 1321540 Current-limiting elements TOKYO SHIBAURA ELECTRIC CO Ltd 10 Sept 1971 [8 Oct 1970] 42277/71 Heading H1K A current-limiting element 1, e.g. for insertion into an electric motor control circuit between a power source and a circuit-breaker, comprises one or more wires 2 of a metal having a high temperature coefficient of resistance, a flexible heat-resistant coating 3 of a material such as glass fibre or asbestos fibre, optionally strengthened by application of silicone varnish, and a flexible electrically insulating coating 4, e.g. of synthetic rubber or P.T.F.E. Suitable metals for the wire(s) 2 are Fe, Fe-Co alloy and W, Ni and Co also being mentioned.
Patent GB-1085407-A (GB)
Title: An alloy of the copper-aluminium-beryllium series
Inventor: WATANABE SEIZO
IPC: C22C9/01
Filed: 1964-10-16
Abstract: An alloy, especially suitable for high speed marine propellers, has the following percentage composition:- .Al.6-9.8 .Be.0.31-1.3 .Cu.and incidental elements the balance
Patent GB-1055606-A (GB)
Title: Process for preparing 2-hydroxy-1,4-naphthoquinone-2-(aminobenzoates)
IPC: C07C/
Filed: 1965-10-05
Abstract: 2 - Hydroxy - 1,4 - naphthohydroquinone - 2 - (aminobenzoates) having the general formula <FORM:1055606/C2/1> in which R is a hydrogen atom or an alkyl group and R1 and R11 are hydrogen atoms or alkyl or alkoxy groups, are prepared by reacting a nitrobenzoic acid chloride with a 2-hydroxy-1,4-naphthoquinone in an inert solvent and in the presence of a tertiary amine to form a nitrobenzoate and then catalytically hydrogenating the nitrobenzoate to reduce the quinone system and the nitro group of the ester.
Patent GB-1350358-A (GB)
Title: Photographic apparatus
IPC: G03B17/04
Filed: 1972-09-12
Abstract: 1350358 Folding cameras POLAROID CORP 12 Sept 1972 [4 Oct 1971] 42335/72 Heading G2A A folding camera has two housing sections 12, 14 connected by a pivot 20, a film-advancing lever 76 pivoted to housing section 14, and a prop 56 pivoted to housing section 12 to hold sections 12 and 14 in the open position, such that in the collapsed position prop 56 overlies lever 76 and hence prevents inadvertent operation of lever 76 in the collapsed position. Fig. 1 shows a camera of the folding single-lens reflex self-processing type disclosed generally in Specification 1292240 having housing sections 12, 14, 16, 18 pivoted together, and shown in the open or operative position. A cassette 40 containing a number of film units is housed in section 12 and, after exposing, the topmost film unit 41 is advanced to pass between rollers 60, 62. It is moved initially by the lever 76, whose upper end extends externally of the camera, so that it can be manually operated. Clockwise movement of lever 76 causes a flange structure at its lower end (110), Fig. 3 (not shown) to engage behind the film unit and push it forward, until its leading edge 49 engages a cam 114, pivoting it clockwise. The cam surface 117 falls, so that a spring member 118 resting on it and which is biased downwards by its own resilience eventually comes into contact with a member 120. A circuit is thus closed, energizing a motor which drives rollers 60, 62 thus continuing to advance the film unit until it has been passed out of the camera. In the position shown in Fig. 1, a tang 70 at one end of housing section 14 enters an aperture 72 near the end of prop 56 (seen more clearly in Fig. 2 not shown), so that the camera is locked open. To collapse the camera, prop 56 is pushed anticlockwise until tang 70 comes out of aperture 72, enabling section 14 to be pivoted anti-clockwise, so closing the camera. Lever 76, when not in use, is spring-biased so that it lies in the plane of section 14, its exterior end lying in a recess 74 on the exterior surface of section 14. As the camera is closed, prop 56 pivots clockwise about its hinge 58 until it also lies in the recess 74. Since it is lying on top of the upper end of lever 76, however, the latter cannot be accidentally moved.
Patent GB-1472002-A (GB)
Title: Welding method
IPC: B23K33/00
Filed: 1974-09-30
Abstract: 1472002 Welding by fusion ROCKWELL INTERNATIONAL CORP 30 Sept 1974 [11 Oct 1973] 42351/74 Heading B3R In butt joint arc welding together end-to-end tubular or, as shown, flat plate workpieces 30, 32, wherein in preparation the workpieces have end surfaces 34, 36 defining opposing side walls of a weld space 38 and respectively a tongue 42 and a co-operating groove defining therebetween a lateral interface 50, the workpieces are also formed with step projections 52, 54 disposed between the weld space 38 and the level of the interface 50 and in effecting a weld, an arc between a consumable electrode, positioned in the weld space 38, melts both a portion of the electrode and said workpieces including all of the projections 52, 54 to form a root portion 62 having said interface 50 extending tangentially therefrom. The surface 34, 36 may be mutually tapered or, as shown, parallel. In the arrangement shown, tongue and groove ends 49, 46 abut and the shoulders 52, 54 are separated, whereas in Figs. 4, 5 (not shown), the tongue and groove ends are separated and the shoulders abut, the separation in each case avoiding the necessity for close manufacturing tolerances. In the arrangement shown, concentrations of heat occur in the shoulders 52, 54 to facilitate deep welding.
Patent GB-922160-A (GB)
Title: Improvements in or relating to shaft couplings
IPC: F16D3/22
Filed: 1961-11-27
Abstract: 922,160. Universal joints. ONDERZOEKINGSINSTITUTE RESEARCH N.V. Nov. 27, 1961 [Dec. 3, 1960], No. 42377/61. Class 80 (2). In a coupling between a box 11 and a shaft 12, three balls 15 engage cylindrical recesses 17, 18 in the shaft and box respectively. In a drive for a gear pump shaft 7 two such couplings are employed, the box 11 being surrounded by a ring 8 and cover-plate 9 to assist in sealing the shaft 7. The recesses 17 and/or 18 may be at an angle of less than 5 degrees to the shafts to hold the end of the sleeve in light contact with the cover-plate. Preferably the radial width of a ball opening is equal to the radius of a ball plus the radius of a recess; the two recesses may be of equal radius. To prevent loss of the balls when the shaft is withdrawn, a race 16 having a cam surface 19 is provided within the base. To maintain alignment of the shaft 12 on withdrawal, the shaft may be provided with a hub which engages a bushing on axial movement of the shaft.
Patent GB-1066650-A (GB)
Title: Improvements relating to tractor mounted lifting device
Inventor: SCOTT DONALD ALAN
IPC: B66F9/19
Filed: 1964-10-17
Abstract: 1,066,650. Container tipping attachments for tractors. NU-WAY BENSON Ltd. Sept. 16, 1965 [Oct. 17, 1964], No. 42463/64. Headings B8E and B8H. A container-tipping attachment for a tractor comprises a U-shaped frame 18 pivotally supported between a pair of arms 11 adapted to be supported by the tractor loader arms. A pillar 17 mounted on arm 11 pivotally supports an hydraulic ram 68 which is connected to plates (65), Figs. 3, 4 (not shown), secured to a rotatable shaft 24. A sprocket 23, secured to the shaft 24, is connected by an endless chain, to a sprocket 22 on a trunnion 21 rotatably supporting the frame 18 whereby extension and retraction of the ram causes tipping of the frame 18. A latch mechanism (44, 45), Figs. 2, 9 (not shown), is provided which is adapted to prevent tipping of the frame 18 relative to the arms 11 and which is released automatically when the container flange (53), Figs. 7, 8 (not shown), is supported in the frame 18. When the latch mechanism is released by the container, clamp members (55) are free to pivot about shafts (54) extending along the arms of the frame 18. The shafts (54) are coupled by levers (56, 57) and rods (58) to a rocker (59) and hand lever (60) on a cross-member (19) of the frame 18. The weight of the container on abutments (52) on the frame 18 overcomes the action of springs (50) and thereby allows spring (61) to be effective to rotate the rocker (59) to bring the hand lever (60) and clamp members (55) over the container flange to lock it on the frame 18.
Patent GB-1207496-A (GB)
Title: Heating elements
Inventor: SCHREIBER JOHANNES OTTO HEINZ
IPC: H05B3/34
Filed: 1967-09-20
Abstract: 1,207,496. Laminates. R. W. ADAMS. 19 Sept., 1968 [20 Sept., 1967], No. 42758/67. Heading B5N. [Also in Divisions H3-H5] An electric heating element comprises a generally flat resistive element 1 sandwiched between a pair of composite layers 20, 21 which are joined together, each composite layer comprising a sheet 4 of moisture impervious synthetic plastics film, a sheet 5 of foamed natural or synthetic polymer and a sheet 6 of fabric. In the electric blanket shown, the resistive element 1 comprises a sheet of glass fibre or Terylene (Registered Trade Mark) fabric coated or impregnated on one or both sides with a conducting natural or synthetic polymer. Braided copper wire conductors 2, 3 are sewn to the element 1 and are connected to conducting sockets 10, 11 respectively by crimping to conductors 12, 13 provided for the respective sockets. The conducting sockets 10, 11 are formed in a socket 9 which is secured to one edge of the composite layers 20, 21. The composite layers 20, 21 are stitched together round the periphery 7 and between the parallel runs of wire conductors 2, 3 at 8. Insulating tape is applied to the edges of the element to render it moisture proof. The runs of wire 2, 3 extending parallel to the top edge are arranged between three sheets of insulating material, 14, 15, 16, conductor 3 being in pockets formed between sheets 14, 15 and conductor 2 being in pockets formed between sheets 15 and 16. A plug or two core lead may replace the socket 9. Instead of stitching along lines 7, 8, 18 the composite layers may be bonded with adhesive, welded by radiofrequency heating, or heat sealed together. The resistive element 1 may be in the form of a plurality of parallel fabric strips coated or impregnated with conductive polymer and sewn to the conductors 2, 3 to form a grid structure. Bare or partly bare wires, or strips of coated fabric in sinnuous form may also be used as the resistive element 1. The heating element may have the fabric sheet outermost so that it can be used as it is as an electric blanket or it may be placed in a removable cover to form the blanket. It may be used as a cistern jacket, in a rug, or carpet warming panel.
Patent GB-1345359-A (GB)
Title: Natiinflammatory agents
IPC: C07D209/26
Filed: 1972-09-15
Abstract: 1345359 Anti-inflammatory agents A H ROBINS CO Inc 15 Sept 1972 [13 Oct 1971] 42913/72 Heading A5B A coprecipitate of an anti-inflammatory agent and tannic acid is prepared by acidifying an aqueous basic solution of the anti-inflammatory agent and tannic acid and isolating the co-precipitate. The anti-inflammatory agent may be, for example, acetylsalicylic acid, phenylbutazone or indomethacin.