baber/WOPTO huggingface dataset:
Patent GB-304469-A (GB)
Title: Improvements in or relating to receiving apparatus employed in wireless telegraphy and telephony
IPC: H01J19/66
Filed: 1928-01-19
Abstract: 304,469. Casardi, F., and Sarti, R. Jan. 19, 1928. No Patent granted (Sealing fee' not paid). Crystal detectors. - A crystal detector comprises a fixed central metal tube 4 supporting the crystal 12 and having a sliding member thereon comprising hemispherical metal members 9, 9<1> forced apart by a spring 17 and engaging boxlike members 8, 8' contained within an open topped casing 7. A protective covering 10 fits within the casing 7 and completely encloses the crystal and catwhisker.
Patent GB-1300538-A (GB)
Title: An improved cutting device
Inventor: SLATTERY JAMES
IPC: B26D1/46
Filed: 1970-01-14
Abstract: 1300538 Cutting apparatus VITAFOAM Ltd 11 Jan 1971 [14 Jan 1970] 1770/70 Heading B4B A cutting device comprises an endless cutting blade 13 adapted to be continuously driven so as to present a moving cutting edge to an article 11, e.g. foamed material, to be cut, the blade being guided in relatively movable guides 12, 23 thereby enabling the contour of the effective cutting portion 26 of the blade to be varied. The blade is formed with notches adapted to be engaged by teeth 25 on a driven sprocket 16 which is adjustable in the directions of arrow 17 within an aperture 15 formed in a table 10. A second sprocket 31 may also be provided and the blade held against the sprocket 16 by a roller 30. In a modification, the sprockets may be replaced by magnetic discs. A guide roller 27 is arranged to press the blade against a bearing block 28. In order to vary the curvature of the blade portion 26, the upper guide 23 is connected to a frame 19, 21, 21 which can be raised and lowered by means of a pneumatic or hydraulic cylinder 20; alternatively, the upper guide can be fixed and the lower guide movable relative thereto. The table may be raisable relative to the lower guide 12.
Patent GB-1467023-A (GB)
Title: Current limiter responsive to current flow and temperature rise
IPC: H02H7/20
Filed: 1974-01-15
Abstract: 1467023 Automatic control of current and temperature TELEDYNE Inc 15 Jan 1974 01778/74 Heading G3R A current limiting circuit includes a main series transistor controlled by a driver transistor the base of which is connected to a constant current source. When the current in the main transistor reaches a predetermined value, a shunt circuit diverts part of the current from the constant current source away from the driver transistor so as to reduce the conductivity of the main transistors and prevent the current exceeding the predetermined value. As shown, a power transistor 16 and current sensing resistor 18 are connected between input and output terminals 12, 14. A driver transistor 20 is biased to saturation by a constant current source comprising a transistor 22, diodes 24, 26 and resistor 28. If the current in resistor 18 approaches the limit value, a shunt transistor 30 begins to conduct, diverting part of the biasing current away from the base of driver transistor 20. The impedance of power transistor 16 is thereby increased to limit the current, and power dissipation increases the temperature of the transistor. This temperature is sensed by a normally non- conductive transistor 32 which turns on when a predetermined temperature is reached, biasing on a second shunt transistor 48 which, by virtue of a positive feedback path, rapidly saturates and turns transistor 16 completely off. If a switch 52 is set to a contact 58, a latching transistor 50 holds the circuit off until the switch is moved to a contact 60, whereupon conduction restarts if the temperature of transistors 16, 32 is below a second predetermined value. The switch may be normally set to contact 60 to provide an automatic restart. If switch 52 is set to contact 56, transistor 22 is turned off and the whole circuit is disabled. A diode 66 protects the circuit against reverse voltages; a Zener diode 68 protects against voltage spikes; and a light emitting diode 70 visually indicates limiting or fault conditions.
Patent GB-528037-A (GB)
Title: Improvements relating to automatic steering gear for dirigible craft having rudders
IPC: G05D1/02
Filed: 1939-01-19
Abstract: 528,037. Automatic control systems for ships &c. GENERAL ELECTRIC CO., Ltd., and CHANCE, B. Jan. 19, 1939, No. 1894. [Class 38 (iv)] [Also in Group XL] Steering.-Automatic steering gear for craft having a rudder comprises means for producing an oscillation of the rudder at a frequency greater than the fundamental frequency of yaw. Any automatic steering system, such as that described in Specification 528,562, may be coupled to the rudder through a differential gear by means of which an auxiliary reversible electric motor may be caused to produce the desired oscillation ; a thermal switch may make intermittent contact (at a frequency determined by its time constant) with alternate terminals in the two field circuits Of the motor, which circuits also include limit switches operated by cams on a shaft slowed through gearing from the motor and determining the amplitude of oscillation, which may be adjusted by changing the gear ratio. Fig. 2 shows a system comprising photo-electro cells L, R associated with a light beam orientated with respect to the craft and controlling a steering motor M. To provide the additional continuous oscillation of the rudder the sensitivity of the circuit of each cell is in turn modified to change the equilibrium position of the light beam with respect to the cells. The amplified motor current impulse from each cell circuit passes through a transformer 18 (or 19), the output of which is rectified and applied to a timing circuit 23 (or 22) and comprising a condenser in parallel with a resistance in series with the opposite cell whereby the potential range of the grid of its associated amplifier is temporarily changed to set up an oscillation of the motor which will continue at a frequency determined by the time constants of the circuits.
Patent GB-396378-A (GB)
Title: Apparatus for training air pilots on the ground, and providing the sensation of controlled flight for instructional and/or amusement purposes
IPC: G09B9/12
Filed: 1932-01-22
Abstract: 396,378. Amusement apparatus. WHITING, J. R. S., Brown Eaves, Beavers Hill, Farnham, Surrey. Jan. 22, 1932, No. 1941. [Class 132 (i).] Amusement apparatus comprises a model aircraft 1, Fig. 1, mounted within a spherical shell 5 having scenery painted or projected thereon and so connected to the aircraft that movement of the controls moves the shell to give an illusion of movement to the rider. The aircraft is mounted on a pedestal 2 and the spherical shell connected by a spider 10 to a ring 15, Figs. 3 and 5, mounted to rotate around a gimbal frame 9 suspended on the pedestal. The ring 9 is rotated in agreement with the steering mechanism by a wheel 35 driven by a flexible shaft 34, Figs. 2 and 5, connected to bevel gear 38 rotated by friction wheels 30 engaging a motor-driven disc in response to movement of the rubber bar 33. The gimbals are operated in agreement with the control lever 17 by wires 21, 24 connected thereto through linkwork.
Patent GB-125684-A (GB)
Title: Improvements in Tool Holding Spindles and Chucks or Tool Holders for Drilling Machines, Boring Machines, Lathes and other like Machines and Tools therefor.
Inventor: BOWERS CHARLES
IPC: B23B31/02
Filed: 1918-02-04
Abstract: 125,684. Bowers, C. Feb. 4, 1918. Sockets.-Relates to sockets for drills &c., and consists in means by which they can be adapted to hold drills with taper or cylindrical shanks or with shanks of non-circular section. As shown in Figs. 2 and 3, the outer sleeve or socket a is provided with a tapered shank 10 by which it is secured to the machine spindle, and is cylindrical internally to receive an inner socket h adapted to take the shank of the drill &c. to be used. The inner socket h has at its lower end a driving- projection j which fits between projections j<1> on the sleeve or socket a, as shown in Fig. 2, and is held by a spring-pressed ball or a key k, which is retained in an opening in the wall of the socket a by a screw 16 or the like, and is locked in engagement with the inner socket by a sliding ring g which can be held in the upper disengaged position by spring-pressed bases p fitting a groove 4. The drill shank is held in the inner socket by a transverse key t, Fig. 2, similarly held in an opening in the wall of the inner socket and also locked by the sliding ring g. When the drill or other shank is cylindrical, the inner socket is preferably made with a closed end, perforated for the passage of air to facilitate the entrance and removal of the drill. The outer socket may also be perforated for a like purpose. The inner socket may be dispensed with and the drill shank modified to fit the outer socket, as described above. To hold a non-circular shank, the inner socket is fitted with a filling-piece f, Figs. 8, 9, and 10, secured by a screw 5 or the like, and the drill shank is held against this filling-piece by a screw 7. Or the opening in the socket may be made of a cross-section suited to the shank, which is retained by a screw &c.
Patent GB-1012579-A (GB)
Title: Construction for use as a garage for vehicles
IPC: E04H6/28
Filed: 1964-01-16
Abstract: 1,012,579. Mechanical garages; elevators. ANCIENS ETABLISSEMENTS COULETTE. Jan. 16, 1964 [Jan. 17, 1963; Dec. 20, 1963], No. 2071/64. Headings B8E and B8H. In a multistorey garage the parking sites surround a lift consisting of a vertical mast and a centrally apertured lift platform fitted on the mast, the platform being guided on the mast only. In Fig. 1 the mast 1 is fixed at the centre of a circular array of parking sites 12 and the platform 8 is rotatable about the axis of the mast. In Fig. 10, the mast 110 is movable on tracks 128, 130, 136 along a passageway 102 flanked by parking sites and an assembly of superimposed platforms 104, 106, 108 is non- rotatably mounted on it. Rotating platform embodiment (Figs. 1, 4 and 5).-The mast 1 provides tracks 6, Fig. 4, for engagement with recesses 5 in an octagonal structure which in turn supports a circular base member 7, Fig. 5, for the platform. The platform 8 is mounted above the base 7 and is rotatable with respect thereto by means of drive units 56. On the platform 8 are a plurality of vehicle supports 9 each tiltable about an axis 65 and incorporating a resilient stop 70. Like supports and stops are provided in the parking sites. The system is controlled by an operator riding with the lift in a walkway 40 surrounding a structure 4 integral with the base 7.  Mobile mast embodiment (Figs. 9 and 10).- Each of the platforms 104, 106, 108 provides a plurality of vehicle supports 146 to 156 of the same form as the supports 9 of Fig. 5; so also do the parking sites 138 to 144 on each floor.
Patent GB-561540-A (GB)
Title: Improvements in and relating to luminairs
IPC: F21V5/00
Filed: 1942-02-17
Abstract: 561,540. Lamps for lighting. HOLOPHANE, Ltd. Feb. 17, 1942, No. 2114. Convention date, Nov. 27, 1940. [Class 75 (ii)] A lens for projecting concentrated light beams in controlled direction comprises upper and lower lens pieces 10, 11, the inner lens piece 10 nearer the light source LC being formed with prisms so shaped that the centres 23, 28, 30 from which the issuing light rays 25 at increasing distances from the centre of the lens appear to emanate are at increasing distances from the lens and the outer lens piece 11 being formed with prisms which concentrate the light rays 24 into a parallel beam. The light source may be displaced by as much as 30 degrees to points 15, 17, Fig. 1, or a point Lc, Fig. 2, while still giving a parallel beam. The prisms may be concentric or rectilinear and an elongated light source may be used.
Patent GB-459086-A (GB)
Title: Driving device for motor cars, especially for stream-lined cars
IPC: B60K11/02
Filed: 1936-01-23
Abstract: 459,086. Motor vehicles. FISCHER, S., 19, Slovenska, Prague. Jan. 23, 1936, No. 2132. Convention date, Jan. 24,1935. [Classes 79 (ii) and 79 (iii)] In a motor vehicle having independentlysprung driving wheels, the power unit, comprising the transverse engine or motor 1, change-speed gear 2, an intermediate shaft 5 and axle driving gear 9, is mounted on that part of the chassis frame which is behind the spring suspension, the wheels being driven through articulated shafts 15 and being connected to the frame through levers 17 or other means. In the construction shown, the power unit is secured to bracket plates 10, 10<1> which are mounted on the frame 14 on rubber or other springs 11. The engine or motor may be an internal-combustion or other engine or an electric motor. The change-speed gear 2 drives the shaft 5 through spur gearing 4, and the shaft 5 drives the axle differential preferably through an auxiliary two-speed gear 61, 62. The main and auxiliary change-speed gears are respectively controlled by rods 22, 3<2>. The road wheels are connected to the frame by levers 17 controlled by springs 18. The engine is cooled by a radiator (not shown) mounted in an air duct 19, the air from which also passes over the power unit where it is guided by plates 20, 21 and escapes through side ducts in the tail U<2> of the car.
Patent GB-347253-A (GB)
Title: Improvements in and relating to coin-freed vending machines
IPC: G07F9/10
Filed: 1930-01-21
Abstract: 347,253. Food warming and moistening apparatus. GOLDSCHMIDT, S. H., 4, Jakob Erlandsensgade, Copenhagen. Jan. 21, 1930, No. 2148. Convention date, Jan. 21, 1929. [Class 28 (i).] A coin - freed machine for delivering articles, such as foodstuffs, is provided with electrical heaters to heat the articles and to heat water to moisten them. As shown in the Figure, the machine comprises an insulated chamber 2 with a front window 7 consisting of several superimposed panes with or without air spaces. Boxes 11 containing sausages rest on drawers 8 adapted to be withdrawn on the insertion of coins in slots 10. The sausages are heated by a vertical series of lamps at the rear of a central chamber 15 and are maintained moist by steam formed by electrically heating water in a tank 14. The steam is led up through the chamber 15 by pipes 22 perforated on the sides facing open ends of the boxes. One or more plates 16, with or without holes, divide the chamber 15 to prevent the upper parts thereof getting too hot. Electric heating units may be provided in the drawers 8 to maintain the bottom articles at the requisite temperature. Thermostats, connected to some or all of the heaters, cut off the current when suitable temperatures have been attained. The current to the machine is cut off when a drawer 8 is opened and when the machine becomes empty. The tank 14 is connected to a tank 23 provided with a pipe 24 communicating with the chamber 15 by a recess 25 so that condensed steam flows into the tank 23. Electric heating units may be provided at any point where it is desired to avoid condensation of steam. In a modification the drawers 8 contain wire resistances which are energized when a coin is inserted and de-energized by a time relay, a coloured lamp being switched off to indicate when the heating is finished. The Specification as open to inspection under Sect. 91 (3) (a) comprises holes in the top and bottom of the boxes through which hot air or steam may be passed and asbestos curtains, connected to weights 13, which are pulled down when the articles are withdrawn to gradually shut off a portion of the chamber 15 and reduce the consumption of electricity. This subject-matter does not appear in the Specification as accepted.
Patent GB-824278-A (GB)
Title: Improvements in method for purifying polymers
IPC: C08F10/00
Filed: 1956-01-23
Abstract: A high density olefin polymer such as is obtained using a chromium oxide type catalyst, e.g. as described in Specifications 790,195 and 804,641, is purified by filtration of a hydrocarbon solution of the polymer at a temperature between the upper and lower cloud points, i.e. at a temperature at which the polymer and solvent are in a homogeneous phase.  The examples illustrate the filtration of solutions of polyethylene in trimethylpentane, cyclohexane and methylcyclohexane and it is said that the temperature used may be between 175 DEG  and 375 DEG  F.
Patent GB-432043-A (GB)
Title: Improvements in photographic cameras
IPC: G03B17/04
Filed: 1934-01-22
Abstract: 432,043. Photographic cameras; shutters ; finders. UNIVERSAL CAMERA CORPORATION, 32, West 23rd Street, New York, U.S.A. Jan. 22, 1934, Nos. 2218 and 2219. Convention dates, March 7, 1933 and Aug. 4, 1933. [Class 98 (i)] The shutter is pivoted on one side of the aperture and an operating lever pivoted on the other side of the aperture, a bridging spacing being provided to engage the operating lever and the shutter adjacent the pivoting points for holding them in assembled position. The front plate 16, Fig. 8, is formed with two bosses 40, 45, one on each side of the aperture 35. On the boss 45 is pivoted a single blade shutter 60 passing an elongated aperture 63. On the boss 40 is pivoted the operating lever 65 shaped and bent outwards as shown. A spring bridge plate 80 centrally apertured is provided with apertured ears which fit over the bosses 40, 45. The lever 65 is connected to the shutter by a spring 75. A front cover 90 is fitted to the camera. A spring washer 55 serves to secure the lens member 58 in a split inwardly projecting boss 36. A single rivet 54 secures the washer 55, the bridge 80 and the cover 90. In the position shown in Fig. 3, the lever 70 is pressed down to make an exposure, the shutter moving from the position shown against the stop 49 until the opposite edge engages the stop 50. The next exposure is made by moving the lever upwards. Finder. A sight hole 100 in a piece mounted at the back of the camera co-operates with a wire finder-frame comprising two parallel vertical parts 101, joined at the top by a horizontal part 102. The lower ends of the vertical sections 101 are bent outwards to contact with and turn over the top edge of the camera at 103 and then carried forward, the extreme ends being turned inwards with grooves provided in the inner top corners of the cover 90. The top and sides of the front are grooved to receive the wire frame when turned down as shown in dotted lines, Fig. 1.
Patent GB-1186391-A (GB)
Title: Manipulator
Inventor: STUBBS DENNIS
IPC: B21J13/10
Filed: 1967-01-16
Abstract: 1,186,391. Forging manipulators. DAVY & UNITED ENG. CO. Ltd. 16 Jan., 1968 [16 Jan., 1967], No. 2254/67. Heading B3H. A manipulator, particularly for use with a forging press, has its peel 21 mounted to permit transverse horizontal and/or pivotal movement about a vertical axis 40, relatively to the carriage 12. The latter is movable longitudinally along rails (15), Fig. 3 (not shown), by sprockets 16 engaging a fixed pin rack 17 and driven by an electric motor 18 supplied with current through a drag chain 20. The peel jaws 25 are actuated by a cylinder assembly 26 and its shaft 22 is rotatable in bearing blocks 23, 24 by a cylinder assembly 31. These bearing blocks form part of an inner frame 36 carrying a vertical pin 40 rotatable within a pivot block 43 slidable transversely in guide 44. The inner frame is biased to a central position by pairs of cylinder assemblies 38 which allow pivotal movement of the peel about pin 40 and also transverse horizontal movement. Cylinder assemblies 38 are carried by an intermediate frame 33 supported by links 66, 73 and levers 65, 72 on transverse shafts 64, 71 rotatable in the carriage 12. Further levers 67, 70 secured to shafts 64, 71 are interconnected by tilt-cylinder assemblies 68 which cause tilting of the intermediate frame and hence the peel 21 in a vertical plane. Further levers 63 secured to shaft 64 are connected to hoist cylinder assemblies (61), Fig. 3 (not shown), which cause the intermediate frame 33 and the peel 21 to be raised and lowered without tilting. The intermediate frame 33 with the peel are also movable longitudinally relatively to the carriage by recoil cylinder assemblies 47 connected to pieces 51 slidable both horizontally and vertically in the carriage and also pivotal about horizontal pins 60.
Patent GB-211118-A (GB)
IPC: B62J6/06
Filed: 1924-01-28
Abstract: 211,118. Frankonia Akt.-Ges. vorm. A. Frank. Feb. 9, 1923, [Convention date]. Lighting by electricity.-The separable telescopic parts d, e of the casing of an electric generator, more particularly for the lighting sets of motor and other cycles, are secured together by studs b and a band c, which is clamped around the casing by the same screw which secures the casing to the supporting brake on the cycle &c. The parts d, e are formed with beads k, l to ensure the correct positioning of the parts when closed together and the correct positioning of the band c. The left-hand bearing n of the shaft h is carried by the part d, and when the parts d, e are separated the armature and magnet may be removed from the part e by unscrewing a screav g normally connecting to the shaft h a member f secured to the driving- wheel.
Patent GB-830855-A (GB)
Title: Improvements relating to clamping apparatus for temporarily securing sheets or plates
IPC: F16B5/06
Filed: 1958-01-23
Abstract: 830,855. Work-holders. INTERNATIONAL GLASS CORPORATION. Jan. 23, 1958 [Sept. 30, 1957], No. 2290/58. Class 83 (3). In a clamp for holding together overlapped plates 32, 33, Fig. 1, a tubular body 10, having capped sleeves 14, 20 secured thereto, slidably supports a holder 12 carrying a pair of needles 22. The needles together form a ball-shaped end 26 and a headed end, consisting of a conical portion 38 and a cylindrical portion 40. Each needle has a shank portion 34, set back to allow contact of the ends only and to provide clearance for a spreader bar 24, having a T-shaped head 28 held between the sleeve 20 and a washer 30 abutting the body 10. A head 46, Fig. 3, of the holder, is upset about the needle heads so as to become integrally connected thereto, and the holder is mounted in the body 10 and held therein by the sleeve 14. A screwed extension 12, of the holder passes through the sleeve 14 and receives a wing nut 16, to impart axial movement to the holder. In use, the ball end 26 of the needles is passed through holes in the plates 32, 33 and the nut 16 is rotated to move the needles along the spreader bar so that the ball end is forced apart and a shoulder 36, Fig. 5, thereon abuts the plate 32. Further rotation of nut 16 clamps the plates 32, 33 together.
Patent GB-675093-A (GB)
Title: Improvements in screwdrivers
IPC: B25B23/00
Filed: 1949-01-27
Abstract: 675,093. Fixing handles; screwdrivers. ATKINSON, E., and ATKINSON, A. Jan. 19, 1950 [Jan. 27, 1949], No. 2320/49. Classes 61 (i) and 61 (iii). In screwdrivers wherein the handle has an opensided slot 2 to receive the flattened tang 9 of the stem 7, the tang increases in width towards the upper end and is held in the slot by a pin 15 and by a ferrule 4 secured to the reduced end 3 of the handle by pins 16 passing through registering holes in the tang, the handle and the ferrule. The stem increases in diameter from the blade towards the tang, shoulders 12 being provided at the junction of the tang which abut the extremity 13 of the handle. In a modification, Fig. 3, the tang has an enlarged shouldered end 10 which is positioned in the upper part of the slot, the shoulders on the tang engaging the end 5 of the ferrule. In another modification the ferrule and tang are equal in length.