baber/WOPTO huggingface dataset:
Patent GB-573896-A (GB)
Title: Improvements in radio aerials
IPC: H01Q11/08
Filed: 1941-03-24
Abstract: 573,896. Directive wireless signalling ; aerials. MARCONI'S WIRELESS TELEGRAPH CO., Ltd., and FRANKLIN, C. S. March 24, 1941, No. 3983. [Class 40 (v)] Relates to directional aerials comprising a helix with spaced turns. (1) The length l of each turn in wavelengths and the spacing s between turns are such that lŒs=#. (2) The A length l =n and the spac- 2 A ing s=(m - 1) -, m and n being any even whole 2 number. (3) The aerial may be formed from a pair of conductors wound in like sense, Fig. 3 (not shown), or in unlike sense, Fig. 2 (not shown), the currents being in phase or antiphase in the two conductors. (4) Each pair of conductors may be crossed over at every half-wavelength along the conductors to. form loops, Fig. 4 (not shown), the conductors being formed into a helix in which the plane of the loops is substantially at right angles to the axis of the helix, Fig. 5 (not shown). Several such units may be connected in parallel to a common feeder, all being wound in the same sense, Fig. (not shown). In all cases, the helix may be wound on a square, polygonal, or circular former. The direction of maximum radiation of the aerial shown in Fig. 1 is along the axis of the helix or in a plane at right angles thereto according to the relation between l, s and A, whilst in the other Figures the direction depends also upon whether the two turns are fed in phase or anti-phase. The aerial may be wound round a vertical supporting tower so as to radiate uniformly in all directions. The conductors of the helices may be terminated with resistances. Specifications 357,480 and 476,726 are referred to.
Patent GB-1093932-A (GB)
Title: Improvements in methods and apparatus for electrochemical machining
Inventor: BROWN DENNIS COCKBURN
IPC: B23H3/02
Filed: 1964-01-30
Abstract: <PICT:1093932/C6-C7/1> In electro-chemically machining a metal or metallic workpiece, the machining tool is effectively moved towards the workpiece by causing relative movement between the tool and the workpiece in a series of discrete steps whilst an electric current is continuously passed between the tool and workpiece during the series of discrete step movements.  As shown, a tool 3 is advanced towards a workpiece 1 by a stepping motor 5 which is driven in a series of discrete steps by a series of energizing pulses from a pulse generator 7, e.g. having an electronically stabilized frequency.  A pulse counter 8 indicates the position of the tool, e.g. each pulse may give rise to a tool movement of 0.0001 inch.  The rate and amount of tool advance may be controlled by means of a predetermined programme, e.g. set up on a punched card or tape or on magnetic tape.
Patent GB-589882-A (GB)
Title: Improvements in or relating to oil maintenance units
IPC: C10M175/00
Filed: 1945-02-16
Abstract: <PICT:0589882/III/1> <PICT:0589882/III/2> <PICT:0589882/III/3> <PICT:0589882/III/4> <PICT:0589882/III/5> A method of reclaiming the oil supply and flushing the lubricating system of an internal combustion engine or other mechanism comprises initially removing contaminants from the entire lubricating oil supply, circulating the cleaned oil through the lubricating system, and removing the flushed-out contaminants from the oil.  In the arrangement shown in Figs. 2 and 3, a trailer truck carries an oil clarifier 16, a pump 30 with gasoline motor 32, and a tank 46 containing fresh oil.  The clarifier is coupled temporarily to the lubricating system of an aeroplane by two pairs of flexible pipes, one pair 55, 53 for connection with the oil storage tank 4, and the other pair 58, 60 for connection with the lubricating passages in the engine 1.  The pipes are connected to the clarifier through three-way valves 38, 39, in one arrangement of which the oil in tank 4 is circulated by pump 30 through the clarifier and the tank, and in another arrangement the cleaned oil is circulated through the clarifier to the engine by way of pipes 58, 60 and a fitting 59, and returned by a scavenger pump 3 and a pipe 11 through a cooler 12 to the tank 4.  The fitting 59 replaces the normal oil strainer during the reclaiming. Additional oil is fed by a hand pump 49 from the tank 46 to the inlet pipe 25 of the clarifier.  As the pump 30 has a greater capacity than the engine pressure pump 2, excess of oil through the pump 30 is dealt with by a by-pass arrangement 78 on the pipes 58, 60 as shown in Fig. 5.  Tubes 79, 80 are connected by ducts 83, 84 having, respectively, a restricted opening 25 and a spring-pressed valve 87.  Between the ducts is a two-way valve 88 which can be set to allow or to prevent flow of oil between the clarifier and the engine.  With the valve 88 open and both pumps 30, 2 operating, the excess oil from the pump 30 is fed back to the clarifier through the opening 85.  If the clarifier gets clogged up, oil is fed to the engine by way of the valve 87.  The oil clarifier, Figs. 8 and 11, comprises a reservoir 92 containing filter elements, each having a foraminous core 107 within which is a stiff helical wire 115.  A strip of cellular filtering material 108 is wound around the core, surrounding the layers of material is a moulded block 109 of absorbent material such as loaded fuller's earth or bauxite, and around the block is wound a second strip 104 of cellular filtering material.  A knitted stocking member 111 envelopes the windings.  The elements are arranged in axially-aligned pairs suspended from a plate 100, the elements of each pair being separated by a plate 126 and resiliently connected together.  The oil which is heated by means of a steam boiler beneath the clarifier, enters the clarifier through an inlet 25 and is discharged through an outlet 26.  Means are provided for release of air from the clarifier.
Patent GB-721274-A (GB)
Title: Improvements in electrostatic gas cleaning devices
Inventor: MACKENZIE KENNETH WARD
IPC: B03C3/74
Filed: 1951-02-19
Abstract: 721,274. Electrostatic filters. RAYTHEON MANUFACTURING CO. Feb. 19, 1951. No. 4035/51. Class 39 (1). An electrostatic precipitator comprises a number of sections, each containing a plurality of precipitating electrodes, the sections are removably disposed in a frame, the voltage supply to each section is disconnectable without interrupting the voltage supply to the remaining sections, and certain of the sections may be isolated from the gas flow while permitting gas flow through other sections. As shown the frame comprises a rotatable vertical cylindrical casing 22 divided up by radial partitions 61 into a number of sector-like compartments 33. Each compartment contains a number of electrode sections each of trapezoidal cross-section. Parts of the compartments between transverse plates 62, 63 and outer spaces 65 of the sections are provided with heat insulating material. Each compartment may contain two ionizing sections and three precipitating sections. 'The electrodes in the precipitating sections may be tubular, or of plate form. In the ionizing sections thin discharge electrodes are surrounded by tubular electrodes. The individual voltage supply terminals 88 for the sections are mounted on bell-shaped insulators 86, Fig. 13, and the conductors 84 leading to the electrodes are provided with holes 89, 90 so formed that air sucked into the apparatus through the terminals is directed against the insulators to maintain them free from dust. The sections may be provided with individual power packs, or connected to a common voltage source, the various terminals being strapped together. For energizing the individual power packs or for providing a connection to the common voltage source, rollers 107, Fig. 4, are provided to move over rails 103 which include a blank section for de-energizing sections isolated from the gas stream. The sections may be energized in tiers. The precipitation apparatus comprises a gas inlet duct 34, Fig. 1, and an outlet duct 35 leading to a heat exchanger 36 from which the gas passes to, for example, the intake of a furnace. Clean gas is removed from the duct 35 through a duct 50 which feeds the gas to a blower 51. The blower 51 operates to clean isolated compartments of the precipitator apparatus by forcing the gas through a nozzle. This gas together with particulate matter is drawn off through a duct 54 to a cyclone separator 55. The gas derived from the cyclone separator is also fed, through the duct 58, to the furnace intake.
Patent GB-1069821-A (GB)
Title: Buoyant vest
IPC: B63C9/115
Filed: 1966-01-31
Abstract: 1,069,821. Protective garments. GENTEX CORPORATION. Jan. 31, 1966 [May 3, 1965], No. 4125/66. Heading A3V. [Also in Division B7] A combined life jacket and spine protector for workmen working near water comprises front portions 10, 12 of flexible buoyant material and a rear elongated element of stiffer material for extending along the spine. Each front portion is preferably formed of unicellular foamed plastics, the chest region being more buoyant than the rest of the front portion and one portion being more buoyant than the other to assist in turning the user to a face-up position in the water. The spine protector comprises an insert 24 of relatively stiff foamed plastics encased in an envelope 22 of fire-resistant fabric. Extensions 29 of the envelope 22 are secured to the neck parts 20 of the front portions. The front portions are joined by a sliding clasp fastener. A belt 50 stitched at one end (48), Fig 4 not shown, to a fabric piece (32) stuck to the portion 12 is passed through one of two loops 52 on the envelope 22 and is adjustable at cinch rings (68), (70) carried by a strap (64) stitched to the portion 10. In another embodiment, Fig. 6 not shown, vertically spaced belts (106), (126) each extending completely round the person, are threaded through slits in the front portions and fasten at centre front with T-headed fasteners. The lower belt is adjustable by means in cinch rings.
Patent GB-266004-A (GB)
Title: Improvements in or relating to the recovery of by-products in coke oven or like plants
IPC: C10C1/02
Filed: 1927-02-14
Abstract: 266,004. Still, C., (Assignee of Weindel, A.). Feb. 15, 1926, [Convention date]. Ammoniacal liquor, treating.-In the recovery of bye-products in coke-oven or like plants the aqueous portion of the condensate which is deposited on cooling the hot distillates is treated for the removal of phenols, the concentration of phenols in this condensation being much higher than in the crude ammoniacal liquor containing also the liquor from the gas washers. The distillates may be cooled in stages and the aqueous portion of the fraction or fractions containing the greater quantity of the phenols treated for removal of the latter. Suitable solvents for treating the condensates are solvent naphtha or a high boiling tar oil and the condensates may be clarified by filtration, adsorption with coal dust or by allowing the mixture to stand before treatment. The phenols are recovered from solution by fractional distillation or by treatment with an alkali to form alkali phenolates. Specification 28072/12 is referred to.
Patent GB-487760-A (GB)
Title: Improvements in or relating to gear cutters
IPC: B23F21/10
Filed: 1938-02-10
Abstract: 487,760. Gear - cutting tools. SYKES, W. E. Feb. 10, 1938, No. 4192. [Class 83 (iii)] A pinion-type gear cutter of helical or spur gear form comprises a toothed body 10 provided on the front face with radial serrations 24 engaged by complementary serrations 28 on the cutting blades 27. The serrations may be of American Standard Thread, or other form in cross section and the blades are secured by screws 25, 26. After assembly, the cutter is bored to provide concentric surfaces 33 on the blades and a counterbore in the body which receives a blade-seating ring 35. The blades are roughly generated and then removed and the complementary serrations lapped together. Finally the blades are reassembled and finish generated. In a modification, Fig. 5, a straighttoothed cutter has body teeth which are inclined on the serrated face 44 to a transverse plane and the blades are of uniform thickness so that a rake A is provided at the cutting faces without special grinding of the blades.
Patent GB-756585-A (GB)
Title: Sawtooth signal generating circuit
IPC: H03K4/43
Filed: 1954-02-12
Abstract: 756,585. Sawtooth generating circuits. RADIO CORPORATION OF AMERICA. Feb. 12, 1954 [March 10, 1953], No. 4224/54. Class 40 (6). A sawtooth signal generating circuit comprises a first valve connected to produce sawtooth oscillations and feeding a second valve operating as a power amplifier and having a transfer characteristic which is not linear, wherein the first valve is arranged to produce grid current and the grid of the first valve is coupled to the grid of the second valve to convey a voltage derived from said grid current to the grid of the second valve to linearize the operation of the second valve. In the circuit shown a sawtooth voltage generated by charging a capacitor 140 and discharging it through a blocking oscillator valve 124 is fed to a non- linear amplifier 132. A portion of the sawtooth voltage generated at the grid of the blocking oscillator is applied to the grid of the amplifier 132 to linearize its operation. In addition a D.C. path may be provided between the grids so that the second grid derives its D.C. bias from the first. In an alternative embodiment the first valve is regeneratively coupled to the output of the second instead of to the cathode of the first and negative feedback is provided from the output of the second valve to its grid. In addition a " negative peaking " resistance is connected in series with a capacitor 140.
Patent GB-248725-A (GB)
Title: Improvements in vents for metal moulds used for casting metals
IPC: B22C9/06
Filed: 1926-02-16
Abstract: 248,725. Holley, E., (Assignee of Anderson, W. S.). March 9, 1925, [Convention date]. Moulds H of metal are provided with vents F formed between a plug D and the wall E of an aperture formed in the mould for its reception. The vents may be formed in the wall E or in the face of the plug; e.g. three flats F, Fig. 3, about- 0.009 inch wide, may be formed on the face of a cylindrical plug. Specifications 202,273 and 212,515 are referred to.
Patent GB-757637-A (GB)
Title: Improvements in or relating to the actuation of controlled members
IPC: H02P7/20
Filed: 1954-02-15
Abstract: 757,637. Change speed and reverse control. REGIE NATIONALE DES USINES RENAULT. Feb. 15, 1954 [March 31, 1953], No. 4433/54. Class 80(2) [Also in Group XIX] Actuation of a member 1, such as the control rod of a dog-clutch in reverse- or reduction-gear on a road or rail vehicle is subject to the operation of one or more pivoted feelers 9 brought into contact with a rectilinear or rotary part such as the output shaft 8 of the gear, which part, if moving, causes the feeler to break (or make) a secondary electrical circuit which, subject to a delay device, has been initiated by switching in at 18 a primary circuit, to cause actuation of said member 1. Thus, in the arrangement shown, actuation of the dog-clutch reversing-rod 1 would be prevented if the output shaft were rotating. The rod 1 is actuated by supplying compressed air from a line 5 to a spring-returned piston 2, under the control of an electromagnetic valve 6. Manual closure of a switch 18 to actuate the rod 1 energizes a relay 21, which first closes an upper contact 23, closing the primary circuit energizing a winding 13b, which, either directly or through a compressed air relay Figs. 2 and 3, (not shown), applies the feeler 9 to the gear output shaft 8. If the shaft 8 is rotating, the feeler 9 swings a lever 10 against one or other of two stops 27, 28 breaking electrical contacts 26, so that no rod-actuation results. If the output shaft 8 is stationary, a spring 14 centralizes the lever 10, making the contacts 26, so that, when, after a predetermined time-delay (by means not described), the relay 21 closes its lower contact 25, the secondary circuit is established through the electromagnetic valve 6 to actuate the reversing-rod 1, and at the same time the valve 6 opens contacts 24 to de-energize the winding 13b, releasing the feeler 9.
Patent GB-262303-A (GB)
Title: Variable pitch propeller
IPC: B64C11/36
Filed: 1926-02-16
Abstract: 262,303. Cederquist, N. H. Feb. 16, 1926. Screw propellers.- Variable pitch screw propellers of the kind wherein arms are laterally mounted in the blade roots and are connected to pitchchanging mechanism are constructed so that the arms may be individually given an initial adjustment. The blades 18 have a metal casing 19 for the root which is spigoted at 17 on the boss and has a flange 20 held through bearings 21 by a collar 22 screwed into the sockets 14. A bush 23 is provided in each blade root and is adjustable therein. In the bush is secured the stock 24 of the arm 25 the external curved part being slotted to engage a pin 32 on a rod 29 which slides in a guide 28 on the boss and is secured to a ring 30. The ring is axially movable on the screws 35 which are rotated by pinions 39 driven by the internal pinion of a sprocket wheel 38 which is rotatably mounted on the sleeve 36. The sprocket 38 is moved by a chain from a sprocket on a shaft under the control of the pilot of the aircraft on which the screw propeller is used.
Patent GB-1244388-A (GB)
Title: Track wheels for tracked vehicles
IPC: B62D55/096
Filed: 1969-01-27
Abstract: 1,244,388. Vehicle wheels; endless track vehicles. CLOUTH GUNMIWERKE A.G. 27 Jan., 1969 [26 Jan., 1968], No. 4470/69. Headings B7C and B7H. A wheel for tracked vehicles comprises two discs of "light" metal or metal alloy, each having a rubber tread 2a, 2b integral with two rubber layers 6a and 6b, the portions of the discs facing the track guides 3 being protected against wear by two steel wear rings 5a and 5b. The steel wear rings are secured in position by placing them in position prior to vulcanization of the rubber so that upon vulcanization a rubber-metal bond is formed. A "light" metal or metal alloy is defined as being a metal or alloy having a specific gravity of less than 5.
Patent GB-469237-A (GB)
Title: Improvements in vehicle frames
IPC: H03J5/00
Filed: 1937-02-15
Abstract: 469,237. Vehicle frames; spring-suspensions. DAIMLER-BENZ AKT.-GES. Feb. 15, 1937, No. 4480. Convention date, Feb. 14, 1936. [Class 108 (ii)] In frames for vehicles the wheels of which are suspended by torsion springs disposed longitudinally, the torsion springs are arranged within longitudinal stiffening bearers provided in addition to the main bearers, the stiffening bearers extending between two transverse bearers of the frame and rigidly connected thereto. The frame comprises main bearers a, b, and transverse bearers c ... g of which the bearers c, d are connected together by stiffening bearers h, i within which are disposed torsion springs q anchored at q<1>. The parts c<1>, c<2> of the front transverse bearer c are provided with upstanding parts k, l having bearings k<1>,l<1> for the upper links p of the wheel suspension, the lower links o having bearings in the stiffening tubes and being connected to the torsion springs q. The rear wheels are sprung by transverse torsion springs t arranged in the transverse bearer g.
Patent GB-202423-A (GB)
Title: Improvements in window structure and plurality of closures therefor
IPC: E06B7/082
Filed: 1922-02-15
Abstract: 202,423. Lancaster, G. W. Feb. 15, 1922. Louver ventilators.-A window for controlling ventilation and lighting comprises an outer louvered shutter hinged to the rabbeted frame at 105, a hinged inner screen 97 and a hinged frame carrying a number of sashes 70. The screen is secured when closed by a pivoted fastening and a projection on the frame, and the shutter is fastened to the screen by a push-bar and fastening 107 which is released on opening through a small arc owing to the eccentric movement of the screen. The sashes are balanced one against another by means of cords and pulleys 85 and the hinged frame 68 has inturned flanges 23 making a weatherproof joint with the window frame and is locked in the closed position by means of a weather-strip 25 which has a pin-andslot engagement with the frame and is operated by a handle and eccentric stud to engage a bevelled recess 14 in the frame. A spring-pressed bolt is provided to engage the edge of the weather-strip and hold it in the open or closed position. The louver slats have oppositely directed flanged ends 160, 161 and are secured to oscillating bars which are operated by a lever connected to one of the bars and to the pushbar In a modification, the window consists of several glazed sashes having draught-proof meeting rails but forming one closure only.
Patent GB-918648-A (GB)
Title: Improvements in fishing reels
IPC: A01K89/01
Filed: 1961-02-07
Abstract: 918,648. Fishing reels. URFABRIKEN A.B. Feb. 7, 1961 [Feb. 9, 1960], No. 4599/61. Class 48. In a stationary spool type fishing reel having spring retracted line guide pins 11 projected outwardly into the path of the line through a rotatable cap 9 by a stationary cam 29 and held in projected positions by a retaining member 17 actuated to release the guide pins by an operating member 23, the latter is disposed centrally at the side of the reel from which the line runs out and within the path of the line around the cap during unwinding. In casting the finger which operates the operating member 23 also stops the line from unwinding but at the end of the casting motion of the fishing rod the finger is withdrawn and the line runs out. The cap 9 is rigidly connected to a shaft 8 rotatable in a hub 28 and having a gear 7 meshing with a gear 6 on a crank-shaft 5. The line guide pins 11 extend through holes in the peripheral portion of the cap 9 and are mounted on slides 13 guided by pins on the cap sliding in slots in the slides; an annular leaf spring 25 maintains the slides in abutment with the under side of the central portion of the cap 9. The retaining member 17 consists of a plate secured to a head 16 on a rod 14 disposed in an axial bore in the shaft 8. A spring 15 acts on the rod 14 to maintain the retaining member 17 in contact with the cap 9 so that when the guide pins 11 are in projected position abutments 18 on the pin slides 13 engage the edge of the retaining member 17. The operating member 23 comprises a disc having a central hole for the head 16 of the rod 14, there being sufficient play between the head and the hole to allow tilting of the operating member. At casting one edge of the operating member 23 is depressed by a finger and in consequence the operating member tilts about the top of one of a series of pins 20 extending through holes in the retaining member 17 from a ring 19 resting on the cap 9. The rod 14 is thus raised and the retaining member 17 releases the pin slides 13 so that the guide pins 11 are retracted by their springs 24. When the finger pressure on the operating member 23 is removed the spring 15 draws the retaining member 17 downwardly to press against the tops of the abutments 18 to cause tilting of the guide pins 11 in the holes in the cap 9. The inner ends of the pin slides 13 thus move downwardly against the action of the annular spring 25 into engagement with the cam 29. When the crank is turned to wind in the line the cam 29 pushes the slides 13 outwards and the edge of the retaining member 17 again engages the abutments 18 on the pin slides 13. The spool 27 may be rotatable against a braking resistance and/or axially reciprocable during winding in. Specification 897,072 is referred to.
Patent GB-547028-A (GB)
Title: Printing machine
IPC: B41L45/02
Filed: 1941-02-06
Abstract: 547,028. Printing-apparatus. ADDRESSOGRAPH-MULTIGRAPH CORPORATION. Feb. 6, 1941, No. 4622/42. Convention date, Oct. 10, 1940. Drawings to Specification. [Class 100 (ii)] A portable printing mechanism comprises a head supporting a removable printing plate and formed with a shank terminating in a handle, a platen arm pivoted to the shank and actuated by means adjacent the handle, and a number of platens carried by the platen arm and selectively movable into position to print part of the matter on the printing plate. The machine described is identical with that described in Specification 547,026 from which the present application is divided.