baber/WOPTO huggingface dataset:
Patent GB-887591-A (GB)
Title: Improvements in or relating to pulse generators
Inventor: CHAPLIN GEORGE BRIAN BARRIE
IPC: H03K5/04
Filed: 1959-05-25
Abstract: 887,591. Transistor pulse shaping circuits. UNITED KINGDOM ATOMIC ENERGY AUTHORITY. May 10, 1960 [May 25, 1959], No. 17714/59. Class 40(6). A pulse producing circuit comprises an avalanche transistor J1 with its emitter and collector connected to a switching means, e.g. a second transistor J2, the collector being connected by a capacitor Cl, such that the switching means closes upon the triggering of transistor Jl to produce an output across the load R2. Diodes Dl, D2 are provided to normally hold J1, J2 cut off, and application of a trigger pulse to J1 produces a pulse at the base of J2 (Fig. 2). In order to increase the rise time of the collector current -of J2, the capacitor C1 is provided to force the collector of J2 positive. After C1 has become discharged, J2 may be maintained in a bottomed condition by hold J1 conductive or by a further current supply to the base of J2. To vary the amplitude of the output pulse, the emitter of J2 may be taken to a variable positive potential instead of earth. In a modification, Fig. 3 (not shown), the single transistor J2 is replaced by a pair of complementary transistors, with the emitter of J1 connected to the base of the PNP, and the capacitor Cl connected to the base of the NPN. If wide pulses are not required, the switching may be provided by a bridge rectifier circuit, Fig. 4 (not shown).
Patent GB-1419140-A (GB)
Title: Wheels
IPC: B21D53/26
Filed: 1973-04-12
Abstract: 1419140 Making drop-centre wheels GKN SANKEY Ltd 12 July 1974 [12 April 1973] 17747/73 Heading B3A [Also in Division B7] A method of making a drop centre wheel comprising a disc 10 and rim 11 which are permanently secured together comprises rotating the wheel about its rotary axis and working bead seats 23, 24 on the rim to render them coaxial with the axis. The initial rim may have partially finished bead seats, Fig. 2 (not shown), or they may be formed while rotating the wheel about the rotary axis. The disc and rim have abutment portions 16, 20 at their point of engagement and are secured together by welding at points 21, 22. Any finishing operations to be performed on the disc, e.g. countersinking holes 13 and machining the centre hole 12, are performed prior to the finishing and truing of the bead seats. The bead seats are formed in the rim by flow-forming or a combination of rolling and flow-forming. The welds 21, 22 are compressed when forming the rim to its final shape.
Patent GB-500098-A (GB)
Title: Improvements in coloured light-sensitive photographic films
IPC: G03C7/29
Filed: 1937-05-31
Abstract: 500,098. Coloured photographic emulsions. GASPAR, B. May 31, 1937, No. 17805/38. Divided out of 496,558 under which a Specification was laid open to inspection under Sect. 91 of the Acts, Dec. 1, 1937. [Class 98 (ii)] Photographic silver halide emulsions are coloured by incorporating therein ortho-oxyazo dyes insoluble in aqueous alkali such as Para-red. The dyes may be synthesized in the layer or in the solutions or emulsions used for preparing the layers. Specifications 496,558 and 496,559 are referred to.
Patent GB-1499522-A (GB)
Title: Sacrificial galvanic anodes
IPC: C23F13/02
Filed: 1975-04-29
Abstract: 1499522 Anode for cathodic protection SKARPENORD AS 29 April 1975 17809/75 Heading C7E A sacrificial anode comprises a body 1 of anode material cast on to a support member, which is secured to one surface of body 1, and comprises at least one supporting metal part 2 secured to a bonding member 3 which is capable of accompanying contractions of said body of anode material. As shown, a network 3 of thin metal elements is welded to body 2 so that when anode material 1 is cast and hardens with cooling, shrinkage of material 1 is taken up by network 3, thus avoiding cracking whilst retaining mechanical and electrical contact: Instead of meshwork 3, metal tabs or tongues may be used. In other embodiments, (1) metal 1 is wider than 2 and 3, (2) metal 1 is coextensive with 3, but wider than 2, which fits between 1 and 3 (3) metal 1 and mesh 3 are wider than support 2 which is in the form of end tabs only and (4) the body is as shown, but semi-cylindrical so as to fit round a pipe to be protected
Patent GB-1456485-A (GB)
Title: Microscope objective lens
IPC: G02B21/02
Filed: 1975-04-29
Abstract: 1456485 Microscope objective AMERICAN OPTICAL CORP 29 April 1975 [6 May 1974] 17815/75 Heading G2J An oil-immersions objective comprises, from the object plane, a plano-convex element I and miniscus element II; miniscus III; miniscus IV and bi-convex V; miniscus VI and bi-convex VII; biconvex VIII and bi-concave IX optical parameters are specified (Table I) and values for f = 1À83 mm are given.
Patent GB-165744-A (GB)
Title: Improvements in or relating to vertical retorts
IPC: C10J3/00
Filed: 1921-06-30
Abstract: 165,744. Collin, Akt.-Ges. zur Verwertung von Brennstoffen - und Metallen, F. J. July 2, 1920, [Convention date]. Retorts.-In vertical retorts having a liquid sealed closure, the supply of steam to the retort and the supply of water for the liquid seal are introduced through the same pipes. Pipes h for steaming the retort are embedded in channels at the bottom of the structure and are connected by a valve i with a water-pipe E<1> and by a valve k with a steam-pipe E<2> so that steam or water may be supplied, the water running into a container e into which the flanges g of the retort mouth dip.
Patent GB-618457-A (GB)
Title: Improvements in or relating to steering mechanism
IPC: B62D5/24
Filed: 1946-06-14
Abstract: 618,457. Fluid-pressure servomotor-control systems. NEWTON, E. P. (Bendix Aviation Corporation.). June 14, 1946, No. 17934. [Class 135] In a power-assisted steering mechanism for road vehicles, aircraft, &c., a manuallyrotatable shaft 1, mounted for limited axial movement, is in threaded engagement with a double-acting, hydraulically-actuated piston 5 connected through a toothed-sector 9 and a rock-shaft 8 to the steering draw-bar, the supply and exhaust of liquid to the piston cylinder being controlled by a valve 31 which is urged towards its central position by spring washers 60. Rotation of the shaft 1 results in axial displacement of the valve 31 and increase in the supply of pressure liquid from the pipe 36 to that side of the piston which results in movement of the shaft and the valve back towards their central position. The effective pressure areas of the moving parts are proportioned so that in the central position the moving parts are completely balanced by liquid pressure.
Patent GB-867716-A (GB)
Title: Improvements in or relating to turbines
IPC: F01D1/04
Filed: 1959-05-26
Abstract: 867,716. Turbines. KERPPOLA, K. W. M. May 26, 1959, No. 17984/59. Class 110 (3). In a turbine, for example a gas turbine, having rotor blades made of heat-resistant material of comparatively poor tensile strength such as a ceramic material, the rotor blades being mounted on and projecting radially inwardly from an annular rotor wheel, the turbine working fluid flowing in contact with the inner surface of the rotor wheel, the stator casing of the turbine is formed with an annular space which surrounds the rotor wheel and fluid under pressure is supplied to the space so as to nullify wholly or partly the effect of centrifugal force acting on the rotor blades and rotor. In the embodiment shown, the stator blades 2 and the rotor blades 4 are of ceramic material, the stator blades 2 being mounted in a tubular member 1 and the rotor blades 4 being mounted at their radially outer ends in a rotor 3. An annular space 7 is formed in the stator casing 5 and fluid under pressure is supplied thereto. A suitable sealing device is provided at 6.
Patent GB-516284-A (GB)
Title: Improvements in control apparatus for aircraft
IPC: G05D1/06
Filed: 1938-07-18
Abstract: 516,284. Control apparatus for air and water craft. SMITH & SONS (MOTOR ACCESSORIES), Ltd., S., and MEREDITH, F. W. June 18, 1938, No. 18172. [Class 135] Indicating or control apparatus installed in air or water craft which depend on a predetermined relationship being maintained between the speed of some rotary member such as the rotor of a gyroscope, tachometer or log and the forward speed of the craft, is provided with means operative when a departure from said relationship occurs to effect a variation of the speed of the craft to restore the relationship. In the arrangement shown in Fig. 1, the elevator 28 of an aircraft is actuated by a servomotor 25 under the control of a piston-valve 22 working in a follow-up seat 23 coupled by a link 32, lever 30 centralized by a spring 33 and viscous element 29 to the servomotor. The piston-valve is actuated by two coupled diaphragms 14, 15, the outer face of the diaphragm 14 being subject to the output pressure of a centrifugal pump 18 rotated by the rotary member acting through mechanical, electrical, hydraulic or pneumatic means. The space between the diaphragms is connected to a static pressure tube 35 while the space on the outer side of the smaller diaphragm is connected to a Pitot tube 17 to detect variations in translational speed. A pressure gauge connected to the chamber 11 and to the static pressure pipe indicates the difference between pump pressure and static pressure and may be graduated in air speed. In a modification, the larger diaphragm is subject to the pressure produced by the Pitot tube and the smaller diaphragm is subject to the output pressure of a centrifugal pump supplying motive fluid through a reducing valve to drive the rotary member. Specifications 129,727, [Class 97 (ii)], and 422,813, [Group XX], are referred to.
Patent GB-730437-A (GB)
Title: Improvements in or relating to convertible settees and like articles of furniture
Inventor: PRICE GEORGE MURRAY
IPC: A47C1/035
Filed: 1953-06-30
Abstract: 730,437. Bed settees. PRICE BROS. & CO., Ltd. Sept. 10, 1953 [June 30, 1953], No. 18175/53. Class 52 (2). A bed settee is arranged so that on sliding forwardly of the seat portion the arm-rests are swung about vertical axes to form a head-board to support the back-rest which is, at the same time, lowered into bed position. As shown, the main frame 1 supports a sliding seat frame 6, a back-rest 10 pivoted at 11 to the seat frame and arm-rests 13 which are carried by support members 17 and arms 14 pivoted to the main frame at 15. At each side a slotted lever 24 is pivoted at 25 to the main frame, is linked by link 27 to the back-rest 10 and by means of its slot 26 engages a roller 31 of the seat frame 6 so that as the latter is slid forwardly the back-rest is lowered about pivots 11 to the horizontal in extension of the seat frame. In addition, the seat frame 6 has two rollers 42 engaging the slots in two actuating levers 37 carried by levers 34 pivoted at 35 to stretchers 36 of the main frame. The levers 34 are linked by links 32 to the supporting members 14 of the armrests 13 whereby the sliding of the seat frame 6 causes the arm-rests 13 to move from positions at the sides adjacent the members 5 to the rearward positions shown to form a head and to support the back-rest in extended position. Mattress 21 will occupy position between mattresses 19 and 22.
Patent GB-909180-A (GB)
Title: Machine tool with inclined work holding table
IPC: B23Q1/62
Filed: 1960-05-24
Abstract: 909,180. Milling; work-holders. DECKEL, H., and DECKEL, F. W. May 24, 1960 [June 12, 1959], No. 18241/60. Addition to 856,694. Class 83 (3). A modification of the machine tool claimed in Claim 1 or Claim 2 of the parent Specification, consists in that the work support surface is formed as an oblique set of steps 36, 38, each having a vertical and a horizontal surface. An additional work-holder 40 is secured by T-bolts 44.
Patent GB-882921-A (GB)
Title: Improvements in or relating to equipment for use in subjecting apparatus to acceleration
IPC: G01P21/00
Filed: 1959-05-28
Abstract: 882,921. Apparatus for shock-testing discharge tubes. GENERAL ELECTRIC CO. Ltd., and GERALD, N. May 27, 1960 [May 28 1959], No. 18289/59. Class 39(1) [Also in Group XIX] Equipment for use in shock-testing apparatus, e.g. a thermionic valve, comprises a platform 3 Fig. 1, on which the apparatus is mounted, a member, e.g. piston 4, arranged to contact the platform and to apply thereto a force tending to accelerate the platform, and retaining means arranged to hold the platform stationary against the action of the force and adapted to be released, whereupon the platform would be accelerated. As shown, the platform 3 is mounted on the free end of an arm 1 hinged for rotation at 2, and is contacted by a piston 4, Fig. 3, which is slidable on a stationary shaft 8 of a cylinder 5. The platform is held stationary by means of an aluminium pin 16, which secures a portion 13 of the platform to the shaft 8, while air under pressure is admitted to the cylinder 5, and which shears when the pressure in the cylinder 5 reaches a required value, whereupon the piston 4 and platform 3 are together accelerated until the piston is stopped by a shoulder 9 formed on the cylinder 5. Springs 17, Fig. 1, connected between the base 6 and arm 1 subsequently reduce the speed of arm 1 and in addition a catch mechanism may be provided to prevent damage.
Patent GB-1383744-A (GB)
Title: Indicating devices
IPC: G06F3/033
Filed: 1971-06-01
Abstract: 1383744 Positioning in two co-ordinate axes FERRANTI Ltd 30 May 1972 [1 June 1971] 18325/71. Heading G1M A pantograph linkage as shown employing a 20:1 reduction ratio enables a part 7 to move both parallel to surface 14 and perpendicular to it so that a measuring apparatus comprising fixed diffraction gratings 9a, 9b and movable gratings 10a, 10b produce a fringing effect and give information which is sensed and processed as in Specifications 810478 and 760321.
Patent GB-963808-A (GB)
Title: A machine for cutting,and possibly embossing or impressing,a paper web or the like into units of desired length
IPC: B26D9/00
Filed: 1963-05-09
Abstract: 963,808. Cutting apparatus. BILLINGSFORS-LANGED A.B. May 9, 1963 [May 14, 1962], No. 18363/63. Heading B4B. [Also in Division B6] A machine for cutting or partly severing a paper or like web includes a rotary knife 11 mounted on a roller 6 co-operating with a counter-roller 5 which is formed of annular sheets or washers of cardboard or paper piled and pressed together on a common shaft so that its surface consists of the peripheries of the annular sheets. The cutting roller may additinally be provided with embossing or impressing means. The two rollers are relatively adjustable to prevent excess wear of the counter-roller, and the knife-roll can be lubricated with suitable lubricant from a roller 7. When the web is only partly severed, cutting may be completed by a tearing operation caused by rotating the receiving rolls 8a, 9a at a greater speed than the rolls 5, 6.
Patent GB-516358-A (GB)
Title: Stabilized negative resistance and conductance devices
IPC: H04B3/16
Filed: 1938-06-21
Abstract: 516,358. Valve circuits. STANDARD TELEPHONES & CABLES, Ltd., and JACOBSEN, B. B. June 21, 1938, No. 18423. [Class 40(v)] A stabilized negative resistance or conductance device adopted to compensate for the positive dissipation of a tuned circuit, wave filter, or network, comprises amplifying valves, e.g. of pentode type, provided with both positive and negative feed-back circuits. The negative resistance or conductance may be temperaturedependent such that it compensates for the temperature-dependent loss in the tuned circuit &c. with which it is associated, and may also be frequency-dependent by using a frequency-dependent positive or negative feedback. Fig. 6 shows a negative-conductance arrangement comprising two pentodes VI, V2 associated with a tuned circuit Lo, Co in the output circuit. An output-voltage-dependent positive feed-back connection P is taken from a potentiometer B, B1 in the output of V2 to the input grid of V1, and an output-currentdependent negative feed-back connection N is taken from a resistance R7 in the cathode lead of V2. Fig. 7 shows a negative-conductance arrangement associated with a tuned circuit C1, L1 in the input circuit and having an outputvoltage-dependent positive feed-back from potentiometer R3, R4, R5 and an outputvoltage -dependent negative feed-back N over resistance D. In a modification, Fig. 8 (not shown), the impedance of the input circuit is matched by the inclusion of a pad having the same characteristic impedance, the output of the pad being connected into the tuned circuit L1, C1. A temperature-dependent effect may be obtained by making resistance R5 of copper and R4 of a material of very low temperature coefficient and suitably proportioning R4 and R5, or by making part of resistance D of copper. Other arrangements are shown, Figs 9 and 10 (not shown), providing negative resistance devices, having output-current-dependent positive feed-back and output-voltagedependent or current-dependent negative feedback.
Patent GB-1175737-A (GB)
Title: Improvements in Internal Combustion Engine Superchargers
Inventor: ARMSTRONG GEORGE JEFFREY
IPC: F02C7/18
Filed: 1967-04-21
Abstract: 1,175,737. Exhaust gas turbo superchargers. D. NAPIER & SON Ltd. April 22, 1968 [April 21, 1967], No. 18447/67. Heading F1G. The invention relates to an engine supercharger in the form of a turbo-charger in which the turbine rotor is cooled by compressed air bled off from the compressor into a cooling air chamber defined in part by the turbine rotor, the cooling air escaping from the chamber into the gas flow path downstream of the turbine rotor. A port is provided communicating the bleed air passageway with atmosphere, the port being provided with a non- return valve so that the port would normally be closed, the valve being opened in the event that the pressure in the bleed air passageway should fall below atmospheric pressure. The turbocharger shown comprises a turbine rotor 6 and a centrifugal compressor rotor 4 mounted on a common shaft 2. Air is bled from the compressor discharge through a labyrinth seal 28 and ports 26 into a chamber 24, the air passing from the chamber 24 through ducts 22 to a cooling air chamber 20 adjacent the downstream side of the turbine rotor disc. The air discharges from the chamber into the exhaust gas flow downstream of the turbine rotor. A port 36 is provided communicating the bleed air chamber 24 with atmosphere, the port being closed in normal operation by a non-return valve 38. Should the air pressure in chamber 24 fall below atmospheric the valve 38 will open so preventing the possibility of turbine exhaust gases passing into the compressor assembly.
Patent GB-569237-A (GB)
Title: Improvements relating to sparking plugs
IPC: H01T13/05
Filed: 1943-11-06
Abstract: 569,237. Spark - plugs. LODGE PLUGS, Ltd., and HOPPS, B. Nov. 6, 1943, No. 18468. [Class 7 (iv)] A screened spark-plug for an internal-combustion engine comprises a body b integral with an extended screening tube c and fitted with a screwed ring g which retains the electrode unit together with its insulator e in position in the body, a removable insulating lining being fitted within the screening tube over the part e and being resiliently held in position by a detachable end-piece k screwing into the top of the tube and acting through a short spring n. The member k is threaded to receive a nut l for securing the cable screening m.
Patent GB-875766-A (GB)
Title: Improvements in and relating to tier stands for table use
Inventor: CLARKE BERNARD JAMES
IPC: A47G19/08
Filed: 1959-05-30
Abstract: 875,766. Cake stands. CLARKE & SONS (STOKE-ON-TRENT) Ltd., JAMES. May 27, 1960 [May 30, 1959], No. 18494/59. Classes 52 (3) and 128. A cake stand with one or more surfaces 12 has a central pillar 10 to which the bottom plate is fixed by a screw 11 with a disc 17 and washer 18 above the plate and a foot with a central boss 13, radial arms and a rim 16 under the plate so that the head of the screw 11 is lifted clear of the table. The pillar may be made in sectional lengths according to the number of plates to be carried.
Patent GB-477892-A (GB)
Title: Improvements in or relating to heavy oil burners
IPC: F23D5/00
Filed: 1936-07-03
Abstract: 477,892. Liquid-fuel burners. CANZI, C. July 3, 1936, Nos. 18499 and 18500. Convention dates, March 13 and May 15. [Class 75 (i)] L A heavy-oil burner operating under natural draught comprises a circular sleeve c, a cup f, and a pan a secured by a nozzle d to the fuel supply pipe w, an outer member b secured by nuts s to the pipe w, and hoods j, q supported by the sleeve c above the pan a. On the fuel issuing from the nozzle d being ignited the more volatile parts of the fuel are vaporized immediately and burn at the orifices r in the hood q with air passing through holes t, h, o, m in the parts b, a, j. The less volatile parts of the fuel pass through holes e in the sleeve c to the cup f where they are vaporized and mixed with air passing under the lower edge of the hood j. This mixture is drawn upwards into the hood q and also burns at the orifices r. In a modification the bottom of the pan a is in contact with the bottom of the member b and is integral with the sleeve c. The cup f may be dispensed with.
Patent GB-238361-A (GB)
Title: Improvements in or relating to horns, trumpets or like sound conduits
IPC: G10K13/00
Filed: 1924-08-02
Abstract: 238,361. Graham, E. A., and Denniss, A. J. Aug. 2, 1924. Sound magnifying and directing appliances.- A horn is built up of a number of leaves of non- metallic material such as wood mechanically connected at their edges to metal ribs or stays. In one construction, Fig. 2, the leaves 1 and ribs 2 are connected together by clips 3, 4 and rivets 5. The clips may be united to form inner and outer rings. In a second construction, Fig. 4, the metal ribs comprise two members 6, 7 secured to the leaves 1 by rivets 5<a> passing through projections or wings in the members 6, 7. In other arrangements, the metal ribs are formed from a sheet-metal blank bent into an H-section, Fig. 8, the leaves 1 being inserted into the grooves thus formed and the whole being secured by clinching the ends 9 into the material of the leaves or into recesses formed therein. Such deformation of the metal at the outer end of the horn may be concealed by a tongue 10, Fig. 7, formed on the end of the sheet-metal blank and bent over into the interior of the horn. This tongue 7 may be formed with penetrating points 12, Fig. 12, which either embrace the rib or pass through apertures therein. At the inner end of the horn, the outer double-thickness portion 15, Fig. 23, of the metal may be clinched into the leaves or a single thickness only may be clinched if a suitable aperture is formed in the sheet-metal blank. The wood may be smoothed and polished before assembly and the metal ribs may be polished, plated, lacquered, enamelled, &c. An elastic or plastic filling agent or an adhesive may be inserted between the leaves and the metallic grooves. Other materials for the leaves 1 are papier mÔchÚ with wood veneers on either or both sides, vulcanized fibre and the material known under the registered Trade Mark " Bakelite." Specification 217,675 is referred to.