baber/WOPTO huggingface dataset:
Patent GB-806468-A (GB)
Title: Improvements in and relating to noise reduction circuits for sound film recording apparatus
Inventor: SEWELL BRIAN CONSTANTINE
IPC: G11B7/00
Filed: 1957-04-05
Abstract: 806,468. Optical sound recording. RANK PRECISION INDUSTRIES (B.A.F.) Ltd. April 5, 1957, No. 11182/57. Class 40 (2). A noise-reduction circuit in a sound-film recording apparatus comprises a transductor, a control circuit, a high-frequency oscillator and a light-modulating galvanometer, characterized in that the high-frequency current is rectified and applied as a noise-reduction bias to the galvanometer after modulation by the transductor in conjunction with the control circuit and in linear relationship with signals fed to the control circuit. The method is illustrated by the circuit of Fig. 2 in which the audio signal is fed through a transformer T1 to the diodes of a valve V1 arranged as push-pull rectifiers, the output from which is fed to a potentiometer network R1, R2, Cl, C2 controlling the operating time constants and a diode MR1, a potentiometer RV1 providing limiting action with adjustable delay. The valve V2 is a D.C. coupled phase inverter producing a current differential and across which is connected a blocking diode MR2 and the control winding of a transductor shunted by a small capacitance C3. A conventional highfrequency oscillator comprising a valve V3 and transformer T2 has an output coil joined in series with the A.C. coils of the transductor and the primary of a transformer T3, the secondary of which is connected to diodes MR3, MR4 to provide the bias signal to galvanometer G which modulates light in known manner. The required normal bias current output is adjusted by means of a bias setting control RV2.
Patent GB-330057-A (GB)
Title: Improvements in or relating to writing pencils
IPC: B43K29/20
Filed: 1929-04-11
Abstract: 330,057. Marpons, R. April 11, 1929. Addition to 296,618. Pencil holders and sharpeners.- The pencil holder according to the parent Specification is modified by the provision of an elastic lead-retaining element attached to the lead, a supplemental 1 e a d - pusher housed in the tubular protector, a pencil sharpener, and a protecting-element for the conical end of the pencil casing. The lead 3 is slidable in the bore of the casing 1 and is attached to an elastic element 4 comprising two arms formed with projections for engaging the sides of the bore and holding the device in position. The lead is advanced by a rod 9 carried by a tubular protector 10, and a supplemental rod 12 is provided for enabling the lead to be projected when the rod 9 cannot reach it. The rod 12 is held by a spring 13 carried by a cap 11 closing the open end of the protector. A pencil sharpener 14 formed by a rasping-surface or by one or more cutting-blades is mounted in the cap 11. The conical surface of the wooden casing 1 is protected by a cover 7.
Patent GB-1298984-A (GB)
Title: Improvements in wire cutters
Inventor: SCHLINGENSIEPEN WALTER
IPC: B26B17/00
Filed: 1970-03-09
Abstract: 1298984 Wire-cutting pliers W SCHLING- ENSIEPEN 9 March 1970 [11 March 1969] 11199/70 Heading B4W A pair of wire-cutting pliers comprise jaws 10b, 11b of wedge-shape with one of the jaws having a resilient retaining member 13. The member 13 has a gripping surface 16 which extends the length of the jaws and in use is pushed upwardly where it is resiliently prestressed so that after wire 18 has been cut the cut-off part is retained on jaw inner face 17. The resilient member is bent upwardly to run along the top of member 10 where it is retained by pivot pin 12 and has its free end protectively enclosed by an insulating sheath 20 of the handle 10a.
Patent GB-122130-A (GB)
Title: Improvements in Scraper Rings for Scraping Oil from Cylinders, Piston-rods or the like.
Inventor: BLACHE HANS HENRIK
IPC: F16J9/20
Filed: 1918-07-09
Abstract: 122,130. Blache, H. H. July 9, 1918. Pistons; piston-rods. - Relates to rings for scraping the surplus oil off cylinders and pistonrods, and consists in providing a scraping edge on, or slightly above, the middle plane of the ring so that canting of the ring in its groove does not impair its efficiency. Fig. 3 shows a cross section of a ring with a scraping edge h. Rings for piston-rods are made in sectors held up to the rod by a garter spring n, Fig. 5, and are placed in a housing which may be arranged on the crankcasing as shown at l in Fig. 4.
Patent GB-976905-A (GB)
Title: Cinematographic camera for sub-standard film
IPC: G03B17/02
Filed: 1961-03-28
Abstract: 976,905. Photographic cameras: varifocal objectives. K. VOCKENHUBER. March 28,1961 [April 1, 1960], No. 11255/61. Headings G2A and G2J. A cinematographic camera for substandard film comprising a varifocal objective, which is at least partly mounted within the camera casing, is characterized in that the adjusting handles for focal length and for focusing the objective are arranged to be rotatable about a common axis running at right angles to the optical axis, and that said handles are both arranged on the same surface of the camera casing which extends parallel to the optical axis and parallel to the running direction of the film in the film gate. As shown (Fig. 2), a knob 6 for adjusting the focal length of a vari- ,focal objective is coupled to the movable middle component 2b of said objective by way of a shaft 8 and a lever 12 having a pin 13 engaging in a groove 14 of a slidable lens mount 15 and is also coupled to the movable front component 2a by way of the shaft 8, a cam disc 11 and a roller 21 which is rotatably mounted mid-way on a spring-urged lever 20 pivoted at 38 and connected through a pin and slot coupling 19 to a slidable lens mount 17. The rear objective component is stationary and not shown. A knob 7 for focusing the objective is coupled to the front component 2a by way of a cam slot 36 engaged by a pin 28 on a lever 26 pivoted at 27, a link 25 and the lever 20, the roller spindle 23 now acting as pivot point of this lever. The knob 7 is mounted on a plate 31 which is screwed to fixed pillars 29, 30 and includes a slot 34 to accommodate movement of the pin 28. Plate 31 also bears an index 37 for co-operation with a distance scale on the knob 7 and a focal length scale on knob 6. The depth of focus corresponding to any desired combination of focal length, diaphragm aperture and focused distance may be indicated by a modification illustrated in Figs. 4 and 5. An adjustable lever 41 which carries an index 42 for co-operation with a diaphragm scale on the knob 6 is connected to a gear wheel 40 stiffly rotatable about the shaft 8 and coupled through a gear wheel 43 to a cam plate 44. This plate includes two cam slots 45, 46 engaged respectively by pins 49, 50 on two levers 47, 48 which indicate the depth of field on the distance scale,on knob 7. Pairs of pointers similar to 47 and 48 may be provided to indicate depth of focus, for example, for the maximum and minimum aperture possible. One of the knobs 6 or 7 may be axially movable for effecting shutter release or a key for release of the shutter may be carried by one of the knobs. The distance and focal length scales may be arranged so that common rotation of the knobs 6 and 7 enables objects to be filmed at variable distances but fixed image sizes. For this purpose, the knobs 6 and 7 may be disconnectably coupled.
Patent GB-527524-A (GB)
Title: Adjustment and indicator for coffee mills
IPC: A47J42/18
Filed: 1939-04-13
Abstract: 527,524. Coffee mills. ENTERPRISE MANUFACTURING CO. April 13. 1939, No. 11272. Convention date, Aug. 30, 1938. [Class 59] A coffee mill has one vertical disc stationarily mounted at the inner closed end of a casing, a rotatable disc mounted on a sleeve axially movable on the driving shaft and removable through the outer end of the said casing, a detachable closure for the outer end of the casing including a stationary guide coaxial with the shaft, a non-rotatable member mounted for axial movement in the said guide and engaging the rotatable disc and a member rotatable on the guide and having camming engagement with the member mounted in the guide to axially move this member. As shown a disc 15 is fixed by screws 16 to the base of a cylindrical member 12 and a coacting rotatable disc 17 with screw feeder 16a is keyed at 18 to shaft 13 of motor 14. A spring 19 tends to move disc 17 along shaft 13 and an axially movable sleeve 23 abuts by a thrust bearing a cap 26 on the end of shaft 13. This sleeve is moved longitudinally to adjust the gap between the discs by the rotation of a disc 29 having diametrical cam surfaces abutting corresponding diametrical projections on the end of the sleeve, the latter being prevented from rotating by a peg and slot 24. The sleeve 23 is slidable in a bore in a removable cover 20 of the cylinder 12 and the cover is provided with a boss 22 which is recessed peripherally to receive the internal flanges 34 of a two-part disc 37 which has a circumferential flange 36 marked to indicate the settings of the grinding discs, these marks being visible through a recess in an outer cover 43a. The parts of the disc 37 are secured to a cylindrical adjusting knob 27 the rotation of which is limited by the shank of a screw 38a movable between two stops 39 on the cover 20. A spring-pressed plunger projecting from flange 2'2 is adapted to engage in one of a number of recesses in the flange 36, each position corresponding to a particular fineness of grind. The cam surfaces 29 are mounted on a screwed spindle 28 in the knob 27 this spindle being adjusted for the initial spacing of the grinding discs after which the cam surfaces are locked in position by screws 32. The cover 43a is secured to the cover 20 and flange 47 of cylinder 12 by screws 45 which are provided with pins 49 which press against the inside of the cover when the screws are retracted to facilitate removal thereof. After the cover 43a is removed the cover 21 and adjusting gear may be removed and the grinding disc 17 removed from spindle 13.
Patent GB-108494-A (GB)
Title: Improvements in the Production of Saccharic Acid and Tartaric Acid from Carbohydrates.
IPC: C07C51/27
Filed: 1917-08-04
Abstract: 108,494. Diamalt Akt.-Ges. Aug. 4, 1916, [Convention date]. Saccharic acid and tartaric acid are obtained by the oxidation of carbohydrates in solution in the presence of metals or oxides or salts thereof acting as catalysts. Suitable carbohydrates are starch, glucose, maltose, or cane sugar; suitable oxidizing-agents are nitric acid, nitrogen oxides, ozone, oxygen, or air. As catalysts, heavy metals or their oxides or salts, e.g. molybdenum or mercury, or precious metals, e.g. platinum, may be used, either in solid, finely-divided, or colloidal form, or in solution; single or mixed catalysts may be used. The oxidation is preferably effected in sulphuric acid solution. Where nitric acid or nitrogen oxides are employed, the evolved gases are collected and returned to the system. Oxalic acid is produced in small quantities as a by-product in the above process.
Patent GB-1135607-A (GB)
Title: Mold capping semiconductor device
IPC: H01L23/498
Filed: 1966-03-15
Abstract: 1,135,607. Semi-conductor devices. TRW SEMICONDUCTORS Inc. 15 March, 1966 [18 Aug., 1965], No. 11327/66. Heading H1K. A semi-conductor device comprises an insulating header provided with at least two conductive contact regions on one side to which ribbon leads are connected, a semi-conductor body mounted on one control region and connected with a fine wire to the other, and a solid plastics cap moulded over the upper portion of the header. The lower face (12) of a beryllia disc (10) is metallized (13), e.g. by chemi-plating, and metallized regions (15 to 18) are formed on the upper face (11) of the disc (10). A copper stud (20) is brazed to the metallized layer (13) on the lower face of the disc, Fig. 2 (not shown), or alternatively a stud may be formed integrally with the disc (10). As shown, Fig. 3, four conductive ribbon leads 21 to 24 are brazed to metallized regions 15 to 18 respectively. A silicon NPN planar transistor is bonded to region 15, its base region is connected to ribbon lead 23 by fine wire 27, and its emitter is connected to ribbon leads 22, 24 by fine wires 26, 28. Wires 26 to 28 may be thermocompression bonded to the transistor and welded to the ribbon leads. A layer (30) of silicone resin or other polymer is brushed on to the top surface of the disc (10) to provide an elastic buffer coating, Fig. 4 (not shown), and the device is then loaded into a mould and a plastics cap (35) e.g. of a silicone moulding compound is transfer moulded over the top and sides of the disc (10), Fig. 5 (not shown). The stud (20) may be omitted and the lower face of the disc (10) fixed directly to a heatconductive surface. A diode may be similarly encapsulated using only two ribbon leads.
Patent GB-474032-A (GB)
Title: Improvements in or relating to machines for wrapping groups of cigarettes or of similar articles
IPC: B65B19/22
Filed: 1936-04-21
Abstract: 474,032. Wrapping-machines. ROSE, A. G., and ROSE BROS. (GAINSBOROUGH), Ltd. April 21, 1936, No. 11339. [Class 94 (i)] Cigarettes and the like are arranged in one or more rows with a gap between a pair of articles in each row to form a block of substantially rectangular shape, and a wrapper is folded into a U-shape about the block, side flaps being formed by folding the margins of the wrappers directly on to the articles at the ends of the rows, while maintaining the gaps open. The method may be combined with that described in Specification 434,662. The cigarettes are contained in a hopper 10 and descend between partitions 11, 40 into a channel 12. The channel is of a width to receive 10 cigarettes in two rows of five. The partitions 11 terminate above the top of the channel, but the partition 40 extends into the channel so as to produce a gap in both rows of cigarettes. The middle cigarette in the upper row is masked by a depending portion 13 on the end wall of the hopper, and is not fed by the pusher 14, which is formed with a slot 43 so that it can pass the portion 13 and the partition 40, so that nine cigarettes are fed in the order shown in Fig. 3, into a channel 24. The partition 41 in the channel is formed with an extension 42 corresponding to the spacing bar 25 shown in Specification 434,662, and the nine cigarettes are wrapped in conventional manner to form a block-ended packet. The resulting packet is shown in Fig. 5, with the wrapper partly removed. When one row only is to be packed, the part 13 is absent. Specification 469,500 also is referred to.
Patent GB-572273-A (GB)
Title: Improvements in stockings and the method of knitting stocking blanks
IPC: D04B9/46
Filed: 1943-07-14
Abstract: 572,273. Knitting. SEAL & TURNER, Ltd., SEVERN, C. M., and TURNER, H. A. July 14, 1943, No. 11481. [Class 74 (ii)] In knitting a stocking blankwith a round heel, the first part A, B of the heel is produced by widening, the fabric is thereafter narrowed as B, E, the carrier traverse is reduced to a width H, H for the knitting of the foot panel, and roving courses E, K, L, M are knitted from a separate yarn on the needles that would otherwise not receive yarn. The fabric may be further narrowed as at J, N after the reduction in the carrier traverse.
Patent GB-1255736-A (GB)
Title: Baby's napkin
Inventor: SVEDBERG OLIVIA
IPC: A61F13/76
Filed: 1969-03-04
Abstract: 1,255,736. Napkin covers. O. SVEDBERG. 4 March, 1969, No. 11507/69. Heading A3V. A baby's napkin comprises a fluid impermeable cover 1 made from sheet plastics material and having flaps 2, 3, 4, 5 which in use are tied in pairs 2, 3 and 4, 5 around the baby's legs, and a piece of absorbent tissue or the like 11 whose ends are received by pockets in the cover. The cover 1 is stamped from sheet material and the pockets are formed by folding tongues 10a, 10b towards one another and welding them at 12. (For Figure see next page)
Patent GB-1345112-A (GB)
Title: Homokinetic joints
IPC: F16D3/224
Filed: 1972-03-13
Abstract: 1345112 Universal joints RIV-SKF OFFICINE DI VILLAR PEROSA SpA 13 March 1972 [23 April 1971] 11548/72 Heading F2U In a constant-velocity-ratio universal joint of the kind in which rolling elements 20 roll on tracks 34, 28 in concentric inner and outer ballsocket members 14, 10, separated by a concentric cage 18, and the centres of curvature 0<SP>11</SP>, 0<SP>1</SP>, of the inner and outer tracks are spaced axially equidistantly from the common centre 0 of the joint, so that the rolling elements 20 are compelled to assume the bisector plane, the inner member 14 is formed, as usual, with grooved tracks 34, but the outer member 10 is internally spherical and smooth and the rolling elements 20 transmit torque by wedging between the inner and outer surfaces. The rolling elements may be balls, but are preferably circumferentially arranged barrel rollers 20, of which the transverse radius of curvature lies between 0À95 and 0À98 of the spherical curvature of the outer member 10 and also of the inner grooves 34, which greatly increases the Hertzian contact area and hence torque-capacity in comparison with that of existing ball-groove types. The transverse curvature of the grooves 34 in the inner member is in two parts connected by a cusp at the longitudinal centre of the barrel roller, which cusp is not in contact with the roller. This provides a contact angle lower than the angle of friction, producing the jamming necessary for torque transmission. The spherical centring surfaces of the cage 14 and outer member 10 are at the base 26 of the latter. In Fig. 7, not shown, the cage (42) is annular and contact with a flat surface (44) at the base of the socket 10 is made by a spherical surface on the end of the shaft 16.
Patent GB-156816-A (GB)
Title: Improvements in or connected with apparatus for the purification of sewage and analogous liquids
IPC: B01F7/00
Filed: 1917-08-11
Abstract: 156,816. Lockett, W. T., and Shaw, A. Herring-. Aug. 11, 1917. Aerating. - In apparatus for aerating sewage comprising moving arms having a porous or perforated upper surface through which air passes into the sewage, as described in Specification 156,817, the arms are furnished with inclined lifting-surfaces which cause the sludge to pass over the porous or perforated surface. Fig. 1 shows an arm a provided with a perforated surface b and a lifting-surface c. The lifting- surface may be formed by a blade, the space behind which may be filled up if desired, of metal blocks or otherwise. The cross-section of the surface may be straight, broken as shown in Fig. 3, or curved. The lifting-surface may be scalloped to check radial motion of the sludge under centrifugal force.
Patent GB-567382-A (GB)
Title: Improvements relating to fuel tanks
IPC: B64D37/02
Filed: 1943-07-16
Abstract: 567,382. Tanks. WORCESTER WINDSHIELDS & CASEMENTS, Ltd., and DEAKIN, T. M. July 16, 1943, No. 11578. [Class 69 (i)] Relates to fuel tanks for aircraft &c. with opposite side or end walls connected by tie rods, and comprises means for fixing the ends of the rods. In a rectangular tank of aluminium &c. with dished ends 2 welded to the body and stiffened by angle members 4, one end of each tie rod 3 is threaded for engagement with' the threaded boss 7 of a cover-plate 6 which, after adjustment, is secured against a sealing washer 14 by studs &c. 15 which pass through a ring 11 riveted &c. to the tank end and provided with threaded bosses or welded nuts 12; the tank end may be recessed to receive the cover-plate. The other end of each tie rod may be similarly secured or may be fixed to the other end of the tank before or after said end is welded to the body.
Patent GB-685750-A (GB)
Title: Improvements in or relating to isoquinoline derivatives
IPC: C07D217/20
Filed: 1949-10-14
Abstract: 1 - Benzyl - 3 - methyl - 1 : 2 : 3 : 4 : 5 : 6 : 7 : 8 - octahydroisoquinolines of the general formula <FORM:0685750/IV (b)/1> (wherein R11 and R111 are the same or different and each represent hydrogen or a methoxy group), and their hydrohalides, are manufactured by (a) catalytic hydrogenation, if desired in the presence of caustic alkali, of quaternary compounds of the general formula <FORM:0685750/IV (b)/2> (obtainable by the process of Specification 685,748) or (in the case of the free bases) by (b) methylation of a compound of the general formula <FORM:0685750/IV (b)/3> (obtainable by the process of Specification 685,749) by reaction with formaldehyde followed by reduction, or (c) reduction with lithium aluminium hydride of a compound of the general formula <FORM:0685750/IV (b)/4> (obtainable by reacting a compound of the general formula (C) with ethyl formate).  In examples: (1) 1-benzyl-3 : 4 : 5 : 6 : 7 : 8-hexahydroisoquinoline is prepared and converted to its methobromide as described in example (1) of Specification 685,748 and the quaternary compound is hydrogenated in methanolic caustic potash in the presence of Raney nickel; (2) 1-(p-methoxybenzyl) - 1 : 2 : 3 : 4 : 5 : 6 : 7 : 8 - octahydroisoquinoline is prepared as described in example (1) of Specification 685,749 and is reacted with aqueous formaldehyde in methanol followed by hydrogenation in the presence of Raney nickel or reduction with formic acid; (3) 1 - (31 : 41 - dimethoxybenzyl) - 1 : 2 : 3 : 4 : 5 : : 7 : 8-octahydroisoquinoline is prepared as described in example (2) of Specification 685,749 and is reacted with formaldehyde followed by hydrogenation as in (2), or is heated with ethyl formate and the N-formyl compound reduced with lithium aluminium hydride.  Specification 685,747 also is referred to.
Patent GB-1064032-A (GB)
Title: Conversion process
IPC: B01J29/06
Filed: 1964-03-19
Abstract: The selective conversion of straight-chain hydrocarbons to straight-chain products is effected in the presence, as catalyst, of a crystalline aluminosilicate having a pore size of about 5A and a silicon to aluminium atomic ratio of at least 1.8 and the alumino-silicate being at least partially in the acidic form. Normal alkanes, e.g. hexane, may be cracked in the presence or absence of iso-alkanes or cyclics, propane, butane, butylene or pentane may be dehydrogenated, mono- and di-olefines may be hydrogenated and hydrocarbons may be hydrocracked. The catalyst may stilbite, offretite, chabazite, gmelinite, or analcite at least partially in the acid form obtained by base exchange with an acid or with an "onium" compound followed by decomposition. Preferably there is 0.5-1 equivalent of cation per gram atom of aluminium, and 0.01-90% of the cations may, if desired, be alkali metal.  The catalyst may be incorporated with an organic or inorganic matrix which may contain a promoter and for hydrogenative reactions a catalyst such as platinum, molybdenum or molybdenum oxide may be incorporated. The examples describe the cracking of n-hexane.
Patent GB-949781-A (GB)
Title: Manufacture of non-ferrous metal ingots or castings
Inventor: LUCEY JOHN ANTHONY
IPC: B22D27/06
Filed: 1960-04-01
Abstract: 949,781. Casting. THE BRITISH OXYGEN CO. Ltd. April 21, 1961 [April 1, 1960], No. 11692/60. Addition to 948,161. Drawings to Specification. Heading B3F. The process of the parent Specification is adapted to the casting of non-ferrous metals and alloys. Specification 584,299 also is referred to.