baber/WOPTO huggingface dataset:
Patent GB-804411-A (GB)
Title: Improvements in or relating to telegraph frequency modulators
Inventor: CHITTLEBURGH WILLIAM FRANCIS S
IPC: H04L27/12
Filed: 1956-12-18
Abstract: 804,411. Code telegraphy. STANDARD TELEPHONES & CABLES Ltd. Dec. 18, 1956, No. 38557/56. Class 40 (3). [Also in Group XL (c)] A telegraph frequency shift modulator comprises an oscillator 1 with frequency-determining circuit 18, 19 and additional capacitor 20 arranged to shunt or be disconnected from across the main tuning circuit 18, 19 by rectifiers 21, 22 acting as switches opened and closed by positive and negative D.C. telegraph voltages symmetrically applied to them from a relay 28 and D.C. source 29 on mark and space signals respectively. As shown, the keying voltages are applied between a centre tap of the inductance 18 of the tuned circuit and the centre tap of a similar inductance 25 connected with equal resistors 23, 24 on each side across the further capacitor 20 and the keying voltage sources are bridged by a shunt R-C circuit 31, 32 so that the keying voltages are rounded (Fig. 2B) both on application and reversal of the voltages, thereby reducing any production of harmonics and carrier beat. Further, a series resistor 30 of one half the value of equal resistors 23, 24 and rectifiers 26, 27 are arranged to be fed from the source 29 on the rectifiers 21, 22 being blocked so that the load on circuit 31, 32 is equal on both mark and spaces and the keying voltages (Fig. 2B) are symmetrical, and the development of marking or spacing bias avoided. The rectifiers 26, 27 also ensure the capacitor 20 is discharged before connection to the tuned circuit. The oscillator may be a single transistor circuit with series current limiting resistor 7 in its collector circuit so that the oscillations are constant in amplitude and rectangular. Alternatively an R-C phase shift oscillator may be used.
Patent GB-819023-A (GB)
Title: Method of lubricating equipment subjected to ionising radiation
Inventor: CLIFFE JOHN OWEN
Filed: 1956-12-18
Abstract: A lubricating grease suitable for use in equipment which is subjected to ionising radiation consists of a major proportion of a mineral lubricating oil (having a viscosity-gravity constant of at least 0.85) gelled to grease consistency by means of an inorganic gelling agent.  The gelling agent may be a colloidal oxide, hydroxide, silicate or carbonate such as silica, alumina, magnesia, calcium oxide and mixtures thereof, or a synthetic zeolite or a natural clay (e.g. a montmorillonite such as bentonite or hectorite).  The gelling agent may be waterproofed by incorporating in the grease an anionic, cationic or non-ionic surface-active agent, especially a partial fatty acid amide of an ammonia-epichlorohydrin condensation product. Alternatively, the gelling agent to be used in preparing the grease may first be coated with a polymeric waterproofing agent such as an aminoplast, a phenoplast or a polymeric silicon compound. Polymerizable silicon compounds which may be used in preparing the waterproofing agent are alkyl halo silanes, alkyl alkoxy silanes and alkoxy amino silanes.  Where the gelling agent is colloidal silica, it may be waterproofed by conversion to an estersil (i.e. by surface esterification with an alcohol).  Those greases gelled with hydrophobic silica are improved by the addition of a minor proportion of a 1,2- or 1,3-diol such as neopentyl glycol, 1,2-heptandiol or 1,2-octandiol.  In examples, mineral lubricating oil is gelled with colloidal silica which has been waterproofed with polymerized dimethyl dichlorosilane, methyl triethoxysilane, trimethyl ethoxysilane or dimethyl diethoxysilane, or with a partial tall oil acid amide of an ammonia-epichlorohydrin condensation product.  In further examples, mineral lubricating oil is gelled with an estersil, an optional ingredient of the grease being neopentylglycol, 1,2-heptandiol or 1,2-octandiol.  Specifications 672,650, 672,651, 683,969, 685,146, 703,169 and 704,604 are referred to.
Patent GB-968005-A (GB)
Title: Improvements relating to sliding clasp fasteners
Inventor: SAUNT JOSEPH ALFRED
IPC: A44B19/38
Filed: 1960-11-10
Abstract: 968,005. Sliding clasp fasteners. LIGHTNING FASTENERS Ltd. Nov. 10, 1961 [Nov. 10, 1960], No. 38701/60. Heading E2S. An open ended sliding clasp fastener has a metal tape fitting comprising a discrete length of strip folded about one of the stringer tapes, the strip having longitudinal extending thinned flange portions 2. The fitting is intended to engage in a box fitting on the other stringer tape, and the strip is bent to form an openended tube with a slit along one side defined by the thinned flange portions, the tube being positioned over the beading of the stringer tape and clamped to it beyond the beading by means of the thinned flange portions. The flange portions are thin enough to go through a slot in the box fitting on the other stringer tape. In a modification a tongue is provided to close the bottom of the tube. The top of the tube is provided with a cut-away portion to accommodate the lowest element of the adjacent stringer tape when in use.
Patent GB-338769-A (GB)
Title: License card holder for motor vehicles
Filed: 1929-12-18
Abstract: 338,769. Neale, R. W. Dec. 18, 1929. License holders for motor vehicles.-The license is held in a circular metal frame a stuck to the wind screen and provided with inward projections a<4>, the retaining member comprising a slightly concave member c having peripheral gaps. The retaining member is manipulated by means of a knob c<2>, and is furnished with a leaf spring e, A cork &c. backing g is placed behind the license, and one side of one of the gaps is turned up to form a stop to limit the rotation of the member c.
Patent GB-344958-A (GB)
Title: Carburetter for internal combustion engines
IPC: F02M23/03
Filed: 1929-12-19
Abstract: 344,958. Spray carburetters. POHJANPALO, E., 15, Hogbergsgaten, Helsingfors. Dec. 19, 1929, No. 38963. [Class 7 (iii).] Fuel from a float chamber A passes through a heating chamber F to a discharge orifice controlled by a needle valve L which is surrounded by gauze Z. In the induction passage D, the fuel mixes with air admitted through a conical member H consisting of a number of spring tongues which move apart on increase of suction. Mixing is facilitated by gauze T and helical ribs W. The passage D and fuel chamber F are heated by exhaust gases, the flow of which is controlled by a valve K. The float-chamber air-space communicates with the induction passage through a duct C. Extra air is admitted in a tangential direction through ducts R. Between the float chamber and the heating chamber F is a flap valve G, which prevents damage from back-firing, and at times serves to create a pressure in the chamber F.
Patent GB-1107682-A (GB)
Title: Improvements in vehicle spring suspension
Inventor: HICKMAN ALBERT FRANK
IPC: B60G11/22
Filed: 1966-09-01
Abstract: 1,107,682. Non-independent suspensions. HICKMAN DEVELOPMENTS Inc. 1 Sept., 1966, No. 39054/66. Heading B7D. In a vehicle suspension comprising a pair of longitudinal torsionally rigid beams 21 interconnected by a light cross member 58, each beam carries on a wheel spindle 20 a tyred wheel 15 and has a cantilever bracket 45 secured to each end with a substantially upright plate 55 opposed to a corresponding plate 31 on a bracket 30 which is securable to a vehicle frame 8 and opposes the adjacent wheel tread 18, a rectilinear movement shear rubber body being mounted between the plates 55 and 31 and, at least partly, outside the plane of the inner surface of the tyre. Each rubber body comprises a pair of blocks 38, 42, the faces of the blocks and of the plates 55 and 31 converging above the wheel. A telescopic damper 60 is provided between each beam 21 and the frame 8 and a vertical bracket 28 secured to each beam is engageable with the outside face of the corresponding frame member 9 to limit movement of the wheels transversely of the frame. In Fig. 5 (not shown), the cross member (58a) and one bracket (45) of each beam are integral and in modifications the inner or outer vehicle frame rails 9 or 10 are dispensed with.
Patent GB-1385732-A (GB)
Title: Printed circuit boards
IPC: H05K3/46
Filed: 1972-08-24
Abstract: 1385732 Printed circuits SIEMENS AG 24 Aug 1972 [2 Sept 1971] 39370/72 Heading H1R Cross-overs of conductive tracks on a printed circuit board comprise one track 4 encased in hardened insulating material 12 with metal bridges over the material connecting to the severed ends of the cross-over tracks 6, 8 and 10. In an embodiment part of a conductive layer 3 on a board 2 is masked by protective material 41, and using photoresist techniques part of the layer 3 surrounding the protected area is removed so as to produce an aperture sufficient to provide the base area of the future casing. The insulating material is deposited in the aperture, in a viscous state, and subsequently hardened to form the casing 12. A metal coating is applied to the remainder of the layer 3 and the casing 12 and patterned to form the unprotected part of track 4, the tracks 6, 8, 10 and the bridges, e.g. 61, on the casing 12. In a further embodiment a board with tracks on both sides with lead-through connections is described, the cross-overs being on both faces.
Patent GB-974317-A (GB)
Title: Hardened gelatin-containing photographic layers and process for the production thereof
IPC: G03C1/30
Filed: 1962-10-18
Abstract: 974, 317. Photographic silver halide materials. AGFA A.G. Oct. 18,1962 [Oct. 28, 1961], No. 39483/62. Heading G2C. The gelatin layers of photographic silver halide materials are hardened by incorporating therein, at a PH of 4-6, the bisulphite addition product of polyacrolein or a copolymer thereof containing at least 50% mol. of acrolein. The layers are not hardened at this pH, but hardening takes place at a pH of 7 or more in the usual processing baths. The acrolein may be copolymerized with acrylonitrile, acrylic acid or its esters, acrylamide, styrene or vinyl acetate. The hardeners may be used in conjunction with conventional hardeners such as formaldehyde, mucochoric acid and N, N', N<11>-triacroylhydrotriazine.
Patent GB-884989-A (GB)
Title: Improvements in or relating to machines for cutting or shearing sheets or plates
IPC: B23D17/04
Filed: 1957-12-23
Abstract: 884,989. Shearing. RHODES, C. J., and RIDGWAY, H. Nov. 27, 1958 [Dec. 23, 1957], No. 39889/57. Class 83 (4). In a plate shears in which a moving blade 15 secured to a a beam 11 mounted on a pivot 13 co-operates with a fixed blade 7, the moving blade 15 has a straight cutting edge having a downward inclination away from and in a plane perpendicular to the pivot 13, and is spaced a substantial distance from the pivot 13, the beam 11 being connected at actuating mechanism at a point remote from the pivot 13. The shears has a prefabricatedframe comprising a base 2, end supports 4, 10 and an arm 3 surrounding an aperture containing the blades 7, 15 and receiving the workpiece. Supported within the frame is an hydraulic system having a doubleacting ram 21 connected by a link 20 to the free end of the beam 11, and an electric motor 23 which drives a pump supplying pressure fluid from a tank 25 to the ram 21 and spring- returned hold-downs 8. The construction is such that the angle between the blades 7, 15 is substantially constant and the cutting pressure increases during the cut which is initiated by a pedal bar 37. The free end of the beam 11 is located between guides 44 which are adjustable to take up wear. The beam 11 and the frame also carry blades having a number of different shaped apertures 50 for cropping profiled bars, which are held during cropping by a device 52. In a modification the shears is operated from a crank-shaft.
Patent GB-1209022-A (GB)
Title: Improvements in and relating to building construction
Inventor: DAVIES ALAN
IPC: E04C2/32
Filed: 1966-09-08
Abstract: 1,209,022. Multistorey framed building structure. STEEL CO. OF WALES Ltd. 30 Oct., 1967 [8 Sept., 1966], No. 40142/66. Heading E1K. A multistorey building comprises lightweight cold rolled steel staunchions 60 located, with respect to a prepared base, at points which lie on the outline of a closed figure defining substantially the shape in plan of the building, and a structural member 62 secured between a pair of staunchions to form part of a wall of the structure between the two superimposed storeys, the structural member 62 comprising a pair of spaced longitudinal steel elements 2, which may be formed as folded or rolled steel channels, attached as by welding, bolting or rivetting to the edges of a corrugated steel sheet 1 which extend transverse to its corrugations. Members constructed similarly to the members 62 may be used in the roof of the building as at 63 in the flat roofed building of Fig. 6 (not shown) or at 70, 71 in the pitched roof structure of Fig. 7. Alternative forms of roof are also described with reference to Figs. 8 and 9 (not shown). Insulation backed cladding which may be plasterboard, tongue-and-groove or ship-lap boarding may be secured to wood fillets 120 Fig. 12 which are attached to the elements 2. Window frames may be attached to the fillets 120. Brick faced cladding may be formed by shaped brick elements 153, 157, 159, 160 supported by stringers 151 on battens 150 provided between upper and lower fillets 120.
Patent GB-1323934-A (GB)
Title: Central lubricating device particularly for knitting machines
IPC: F16N7/38
Filed: 1970-08-21
Abstract: 1323934 Lubricating knitting &c machines ELITEX-ZAVODY TEXTILNIHO STROJIRENSTVI GENERALNI REDITELSTVI 21 Aug 1970 [3 Sept 1969] 40299/70 Heading F2A [Also in Division D1] A central lubricating device for a knitting machine, loom or the like comprises an oil discharge chamber 8 within which is a discharge body 9 controlled by a lifting device to discharge oil into a groove with associated dosing chambers 19, at least one of which is replaced by a pressure unit drawing oil direct from an oil vessel 7 and operated by the lifting device controlling the operation of the discharge body. Dosing chambers 19 are controlled by screws 20 and are connected by lines 5 to various lubricating points. The rotatable lid 11a of vessel 7 carries a pin 16 which controls a lifting pin 10 on body 9, and a cam 17 which operates the or each pressure feed arrangement. In a pressure feed, Fig. 5, for heavy oil, the oil is drawn in through openings 29 from vessel 7 and forced out by piston 26 actuated by cam 17 through a valve 33 to a line 5. A pressure feed for thin oils, Fig. 6, comprises a piston 42 forced down through rod 40 by cam 17 to draw oil in from vessel 7 and is raised by spring 43 to force the oil out through line 52 to a distributer 53.
Patent GB-1011610-A (GB)
Title: Tube fitting
IPC: F16L19/08
Filed: 1963-10-11
Abstract: 1,011,610. Tube coupling. IMPERIALEASTMAN CORPORATION. Oct. 11, 1963 [Oct. 11, 1962], No. 40317/63. Heading F2G. A tube coupling comprises a tube T receiving on one end a sealing ring 12, a body member 11 sealingly engaging with said ring and a first member 13 engaging the body member to deform the sleeve into sealing engagement with the tube. The sleeve 12 is flanged 21 at one end to abut the end 22 of the tube T and this end is received within a frustoconical bore of the body member on connection of the coupling. The body member carries a screw thread 27 co-operating with a thread on the first member or nut 13. On connecting the two members 11, 13 a cam surface 25 on the nut deforms the ring 12 such that teeth 24 on the ring bite into the tube. The nut 13 is provided with an outer extension 28 having a thread to receive nut 14 and having an inner cylindrical surface of larger diameter than the outside diameter of the tube. A thread 29 is provided on the inner surface of the extension 28 the teeth of the thread having a right triangular section with the surface 30 extending substantially perpendicular to the tube axis (Fig. 5). A series of slots 34 in the extension allows the extension to be deformed so that the thread 29 bites into the tube when a nut 14 having an internal tapered thread is screwed on to the extension. The nut 14 is provided with an inturned flange 35 to preclude entry of dirt into the fitting. Specification 978,899 is referred to.
Patent GB-1162589-A (GB)
Title: Thermoelectric Elements
IPC: H01L37/00
Filed: 1967-09-04
Abstract: 1,162,589. Thermoelectric devices. NORTH AMERICAN AVIATION Inc. 4 Sept., 1967 [6 Sept., 1966], No. 40397/67. Heading H1K A thermoelectric generator using the Soret effect comprises a composition 12 of from 1 to 30 mole per cent of Bi in BiBr 3  and/or BiCl 3  in a closed container 11 provided with means to prevent convective flow within the container when the mixture is molten while permitting flow of Bi ions and of vapour of BiBr 3  and/or BiCl 3  to maintain a concentration gradient within the composition in the presence of a temperature gradient. The generator operates on the principle that a temperature gradient applied across the molten solution 12 produces a steady-state concentration gradient which results in a voltage between inert electrodes 14, 15, e.g. of W or alloys thereof. In the form shown the container 11 is made of a refractory material and convective circulation is prevented by an ion-permeable barrier 13 of sintered glass, quartz or ceramic. The ion concentration gradient occurs entirely across the barrier 13. The device is enclosed within a furnace to produce a temperature gradient of 5-20 C. at a temperature of 230-500 C., control being effected by thermocouples. In another form convective flow is prevented by means of tightly packed particles of glass, quartz or ceramic filling the container. The preferred solution concentrations are 1-10 mole per cent Bi in BiBr 3  or 5-10 mole per cent Bi in BiCl 3 . Other materials such as BiI 3  may also be included. The mixture is introduced into the container in powdered form.
Patent GB-1365512-A (GB)
Title: Doping control for semiconductor materials
IPC: C30B13/12
Filed: 1971-09-01
Abstract: 1365512 Doping during zone refining MONSANTO CO 1 Sept 1971 [2 Sept 1970] 40780/ 71 Heading B1S In a zone refining process doping of the semi-conductor material by a selected dopant is effected by controlling the dopant concentration in the zone being refined by passing atoms of the dopant thereto during repeated time periods each of a chosen duration for a selected percentage of each time period. The dopant atoms are preferably supplied in admixture with an inert gas such as argon, krypton or xenon, and the dopant is generally phosphone. The apparatus for carrying out the doping comprises means for passing the dopant atoms during repeated time periods of chosen duration during zone refining of the material to the material, and means for controlling the selected percentage of time during which the atoms are passed. The control is preferably effected by a valve associated with a timing device and the arrangement is such that the dopant concentration in the gaseous mixture can be varied without altering the gas pressure in the system. As shown in the Figure the numeral 10 generally designates the gas proportioning system utilized for controlling dopant concentrations in semiconductive materials in a zone refining chamber 12, wherein rod 16 is being zone refined, by R.F. induction heating coil 18. The chamber is constantly purged with an inert gas via line 67 and also receives an inert gas-dopant mixture from tube 20 directed towards the molten zone 17. Inert gas is supplied from tank 22 and dopant from tank 24 to first mixing chamber 32 via control valve 30 and critical orifice 34, and control valves 38 and 44 and critical orifice 40, respectively. From chamber 32, the gas mixture flows under substantially constant pressure via flow line 48 to a 3-way programmable solenoid valve 50 energized by an inductance coil 52 controlled by an electronic timer 53 programmed so that the gaseous mixture in line 48 will pass through valve 50 and to the gas exit line 54 for the chosen percentage of a given time period or cycle required for treatment of a particular rod. During the chosen percentage of the cycle, the gas mix in chamber 32 is passed to chamber 58 where it is diluted with inert gas flowing through valve 60 and critical orifice 64 from which chamber the mixture via line 68 and doping tube 20 makes contact with the molten zone 17. The rate of flow of the dopant mixture is controlled by the gas pressures in lines 26 and 36, and the actual time that P or N dopant atoms are passed to chamber 12 is controlled by timer 52. In a modification (not shown) the mixing chamber is formed by the meeting of adjoining walls of three gas lines and the dopant gas flowing into this chamber is controlled by a solenoid type plunger member cooperating with an orifice valve.
Patent GB-917787-A (GB)
Title: Improvements in or relating to electric incandescent filament lamps
Inventor: CLAPSON BRIAN EDWARD
IPC: H01K3/06
Filed: 1960-11-28
Abstract: A filament of tantalum carbide may be formed in situ in an electric lamp by welding the ends of a length of tantalum wire to short lengths of thicker tantalum wire and welding these to tungsten wires sealed into a pinch.  The pinch is then sealed into a lamp envelope, the envelope evacuated and the filament heated by the passage of current to drive off residual gas from the filament and envelope interior.  The envelope is then filled with pure methane and sealed off.  The filament is carbonized by heating for six hours at 2000 DEG -2400 DEG C. by the passage of current.  The mixture of hydrogen and methane remaining in the envelope serves to prevent decarbonization.
Patent GB-1301730-A (GB)
IPC: A61C13/30
Filed: 1970-08-26
Abstract: 1301730 Artificial teeth K H RIVOIR 26 Aug 1970 [29 Aug 1969] 40932/70 Heading A5R A resilient mounting for an artificial tooth 1 comprises a supporting bolt 3 secured to the tooth by means of a base 4 and engaging with a supporting housing 7 and a resilient member, such as spring 8, located therebetween, the bolt 3 and base 4 and housing 7 having corresponding engaging surfaces 3" and 10", and 12 and 13, the arrangement being such as to allow the tooth to move relative to housing 7 along its longitudinal axis and also transversely thereto. Spring 8 is received in a recess in the lower end 11 of bolt 3 and is held in place by a plate 9 at the lower end of housing 7. Bolt 3 is screwed into base 4 embedded in tooth 1 by means of cement and annular grooves 5. The mounting may be applied to a denture or a bridge, or to implanted teeth.
Patent GB-948174-A (GB)
Title: Fluid control valve
Inventor: HUNT NATHAN CHARLES
IPC: F16K31/42
Filed: 1961-06-30
Abstract: 948,174. Valves. INTERNATIONAL BASIC ECONOMY CORPORATION. June 30, 1961, No. 41161/62. Divided out of 948,172. Drawings to Specification. Heading F2V. A valve has a first valve member with a piston slidable in a cylinder bore, a second valve member for reciprocating the first valve member by controlling the flow of fluid to the cylinder bore, an electromagnetic coil for shifting the second valve member, and a manually operable valve member effecting fluid flow to the cylinder bore in simulation of coil energization. The valve is also described in Specification 948,172. Specification 948,173 also is referred to.