baber/WOPTO huggingface dataset:
Patent GB-515180-A (GB)
Title: Improvements in key switching devices suitable for use in telephone systems
IPC: H01H21/02
Filed: 1938-05-26
Abstract: 515,180. Telephone key switches. POLLAK, J. E. (Associated Telephone & Telegraph Co.). May 26, 1938, No. 15790. [Class 38 (v)] A key switch comprises a pair of frame members 10, 11 each of which provides half a bearing for the pivot pin 3 of a moulded insulating operating member having a handle 1 and a cam part 4 with recesses 5. Clamped to the frame members are contact spring sets 12, 13 and springs 22, 23 carrying intermediate members 20, 21 having rollers 24 for engagement by the cam 4. Movement of the handle 1 in either direction causes the corresponding roller 24 to move out of its recess 5 and after a certain amount of lost motion to engage a member 25 to operate one or other of the spring sets 12 or 13. When the roller 24 is fully on the raised part of the cam 4, the operating lever will remain in the. operated position until returned by hand. Fig. 4 shows a stop member 26 arranged to engage the cam 4 and prevent movement of the key in one direction. If the stop is turned over, it merely limits the movement of the cam so that the roller 24 does not rest on the raised part of the cam. This results in the switch returning to the central position when released. A stop 26 may be mounted on both sides of the operating member.
Patent GB-880771-A (GB)
Title: Adjustable quick release buckle
IPC: A44B11/25
Filed: 1959-05-08
Abstract: 880,771. Strap fasteners. NOE, W. M. May 8, 1959, No. 15838/59. Class 44. A buckle comprises a tongue part 14 for connection to one strap end 10, a connector part 13 for connection to the other strap end 11 and having two shells 18, 19, a pivot pin 20 pivotally connecting said shells adjacent one end for movement of one shell relatively to the other in order either to release or secure said tongue part in the connector part, and strap adjusted means disposed within the shells at the pivoted end having a sliding movement relatively to said pivot pin for releasing or gripping said other strap end between said adjusting means and said pivot pin. The buckle comprises, inside the shells 18, 19, separate, independent means for connecting the ends of the strap and for adjusting its effective length. Connection of the strap is effected by inserting tongue 14, attached to one end 10 of a strap, between the shells, an abutment 42 on a latch 21 co-operating with a hole 16 in the tongue to prevent outward movement of said tongue. The latch 21 is spring actuated, one or more springs being mounted on a pin 36 attached to the lower shell 18. Relative angular displacement of the shells 18 and 19 causes a pin 28 attached to the upper shell to move in a slot 29 in the lower shell and actuate a latch 21 to release the tongue 14. The effective length of the belt is altered by pushing a slide 46 into the shells by its nose 22 and moving the now loosened strap by the requisite amount. As soon as the slide moves out to the position shown in Fig. 2 the strap becomes firmly gripped around a collar 53 and a sleeve 45 on the pin 20.
Patent GB-419653-A (GB)
Title: Improvements in street lighting apparatus
IPC: F21V7/05
Filed: 1934-05-28
Abstract: 419,653. Street lamps. HOLOPHANE, Ltd., Elverton Street, Vincent Square, London. -(Soc. Anon. Franþaise Holophane; 156, Boulevard Haussmann, Paris.) May 28, 1934, No. 15861. [Class 75 (iv).] In street lighting apparatus for use with a vertical elongated light source 0-0<1> the light source is in effect transformed into a horizontal source by means of two mirrors 1 and 2 inclined at substantially 45‹ to the axis of the source, the mirrors forming between them a dihedral whose ridge intersects the said axis. By reflection from the two mirrors, the source 0-0<1> is in effect transformed into horizontal elements 0-0<11> and 0-0<111>, Fig. 2, which lie in the same straight line. Light emitted by the source which would not fall on the mirrors 1 and 2 is intercepted by two vertical mirrors 6, Fig. 3, which form images 01-01<SP>1> and 02-02<SP>1> which are again reflected in the mirrors 1 and 2 and appear as horizontal images 01-01<SP>11>, 01-01<SP>111> and 02-02<SP>11>, 02-02<SP>111>. The mirrors 6 may be replaced by a mirror 7 having prisms on its reflecting surface. The fitting is provided with prismatic end plates and baseplates 4 which deflect the light into the desired directions. The end and base plates may however be omitted and the same effect obtained by means of prisms arranged on the inclined mirrors 1 and 2 which in this case may vary slightly from an angle of 45‹ to the source. For emitting the light in two divergent beams, two fittings may be combined as shown in Fig. 9. Alternatively the mirrors 1 and 2 may be replaced by mirrors 1<1> and 21, Fig. 6, whose greatest line of slope is 45‹ to the vertical and whose ridge OC passes through the top O of the source. The source 0-0<1> is reflected as two horizontal images 0-0<11> and 0-0<111>. The fitting is closed at the front by a prismatic plate 8 and semi-cylinder 9 which latter may be a reflector.
Patent GB-1399622-A (GB)
Title: Moulding apparatus
IPC: B30B15/32
Filed: 1972-04-06
Abstract: 1399622 Isostatic press OLIN ENERGY SYSTEMS Ltd 6 April 1973 [6 April 1972] 15889/72 Heading B5A The isostatic compaction of powder is effected in apparatus comprising a vertically movable block 35 with bores 36, 37 accommodating moulds 1, 2. Each mould has a main resilient body 38 with upper and lower end closures surrounded by a perforated metal sleeve 44. The mould 1, for producing a sphere 3, has resilient end closures 39, 42 attached to members 71, 64, respectively, whereas the mould 2, for producing a tube 4, includes a perforated spacer sleeve 80 and end closures 39a, 42a. The latter receive a mandrel 84 vertically movable by an air cylinder 66. The lower closures are attached to a stationary table 15 whereas the upper closures are secured to a vertically movable plate 73 attached to a ram assembly part 22 guided by pillars 11. The block 35, also guided by the pillars, is attached to the piston-rod of a piston 77. The moulds are supplied with powder from a feeder 90, Fig. 2, after raising the part 22. With the moulds closed the powder is compacted by pressure fluid fed into the manifolds 47. After decompression, the piston chamber 75 is pressurized and the part 22 raised whereby the upper mould closures and the block 35 are raised to leave the moulded products exposed on the lower members 42, 42a. As the block rises, an ejector mechanism 100 on a rotary shaft 101 is operated to swing into position and grip the products and then swing back free of the moulds before releasing them. The mechanism includes a gripper assembly for each mould, each comprising a pair of gripper members on extensions 117 of levers 114 spring- urged towards each other and separated by a wedge pin 125 at the extreme positions of the assembly movement. Stops 140, 141 at such positions effect wedge pin displacement. The shaft 101 is appropriately rotated against spring action by an arm 104 clamped to it and carrying a roller 106 engaging a cam track 107 movable with the block 35.
Patent GB-680045-A (GB)
Title: Improvements relating to sealing gland arrangements
Inventor: HARRIS FRANK ROSSLYN
IPC: F16J15/42
Filed: 1950-06-26
Abstract: 680,045. Stuffing-box substitutes. METROPOLITAN-VICKERS ELECTRICAL CO., Ltd. May 23, 1951 [June 26, 1950], No. 15903/50. Class 122 (v) A shaft 1 passing through the wall of a casing 2 is sealed when stationary or at low shaft speeds by two centrifugal type liquid seals one 12 between the shaft 1 and a sleeve 6 concentric with the shaft and the other 11 between the sleeve and the casing 2, the sleeve being mounted so that it can be rotated relative to the shaft and casing to maintain the seal. The sleeve has an external paddle-wheel 9 which operates in a recess 10 in the casing and a recess 13 provided with paddles and surrounding a flange 14 on the shaft. Normally, when the shaft speed is sufficiently high, the sleeve 6 is at rest and the shaft is sealed by a further centrifugal liquid seal 5 formed by a paddle 3 on the shaft operating in a recess 4 in the casing but when the shaft speed falls below that necessary to maintain the further seal 5 the sleeve 6 is automatically engaged and driven by gearing 8 and the shaft is sealed by the two liquid seals 11, 12.
Patent GB-594028-A (GB)
Title: Crystal controlled oscillator
IPC: H03B5/34
Filed: 1945-06-22
Abstract: 594,028. Valve generating circuits. STANDARD TELEPHONES & CABLES, Ltd. June 22, 1945, No. 15987. Convention date, March 19, 1944. [Class 40 (v)] A reaction oscillator is provided with a negative feedback path with means including a piezo-electric crystal for neutralising the degenerative effect at the resonant frequency to sustain oscillations at this frequency only. In the Figure, resistor 18 providestheregenerattive coupling for valve oscillator 8, and the negative feedback path comprises resistors 20, 21, which is rendered ineffective at the resonant frequency of circuit 1 by a piezoelectric crystal 22 tuned to the same frequency. The crystal also exerts the usual compensating inductive or capacitive effect in response to any frequency drift in circuit 1. An amplifier stage may be inserted in both feedback paths with a corresponding reversal of connections to the tuned circuit, or the amplifier may be in the positive feedback path only, when both paths terminate at point 6 (Figs. 2, 3, not shown). Multi - electrode valves may be used and the amplitude of oscillation may be regulated by employing resistors 18, 20, 21 with variable resistancecurrent characteristics.
Patent GB-551234-A (GB)
Title: Improvements in or relating to radio-receivers or amplifiers arranged to be fed from direct current mains
IPC: H04B1/16
Filed: 1941-12-11
Abstract: 551,234. Smoothing direct currents. PHILIPS LAMPS, Ltd. (Naamlooze Vennootschap Philips' Gloeilampenfabrieken). Dec. 11, 1941, No. 16012. [Class 38 (ii)] [Also in Group XL] A radio receiver is fed from direct current mains 1 through a filter comprising chokes 3, 4 and electrolytic condensers 5, 6. A relay coil 9 in the cathode lead of one of the valves 2 controls contacts 7 so that only if the polarity of the supply is such as to cause anode current to flow in valve 2 are condensers 5, 6 connected in circut, thus saving damage to the condensers due to reverse connection. Further contacts controlled by relay 9 may serve to make the loudspeaker until the relay has operated. Such bias for one or more valves may be taken from the coil 9.
Patent GB-1358346-A (GB)
Title: Cover for a curved pipe-bend
IPC: B29C51/00
Filed: 1972-04-07
Abstract: 1358346 Sheet forming M ANDERSSONS ISOLERING AB 7 April 1972 16158/72 Heading B5A [Also in Division F2] A snap-on cover for insulating a pipe bend is deep-drawn from plastics and has a stable open position in which the whole peripheral edge lies substantially in a plane, and a closed position to which it is snapped from the open position so as to cover the surface of the pipe bend with portions of the edge meeting along an inside line of the pipe bend.
Patent GB-182662-A (GB)
Title: Improvements in or relating to fittings for door handles or the like
IPC: E05B3/10
Filed: 1921-06-13
Abstract: 182,662. Krinner, A. June 13, 1921. Knobs and handles, attaching.-The spindle of a latch comprises the two wedge-shaped members c and c<1> and is tapered towards its .extremities f, f<1> so that, when the spindle is inserted in the bore h of the handle a, there are wedge-shaped spaces g, g<1> between the bore and the spindle. To secure the handle to the spindle, the pin i is inserted, forcing the ends f, f<1> apart, and exerting pressure between the spindle and the bore of the handle, and also at the edges k, k' of the bore of the latch follower.
Patent GB-201155-A (GB)
Title: Improvements in and relating to roller bearings
IPC: F16C19/26
Filed: 1923-06-22
Abstract: 201,155. Schaeffers, J. JuJy 18, 1922, [Convention date]. Roller bearinqs. - In order to take axial thrust, cylindrical bearing rollers 1 have spherical end surfaces which bear against conical portions of the races 2, 3, contact taking place at the edges x formed by the intersection of the cylindrical and spherical surfaces of the rollers. According to the Specification as open to inspection under Sect. 91 (3) (a), the .rollers may bear against conical spherical or like portions of the race. This subject-matter does not appear in the Specification as accepted.
Patent GB-278071-A (GB)
Title: Improvements in or relating to telescopic display stands or the like
IPC: A47F5/06
Filed: 1926-06-29
Abstract: 278,071. Young, W. B. June 29, 1926. Pedestal stands. - A telescopic pedestal for a display tray 4 comprises inner and outer tubular members 3, 1. The tray may be mounted on the inner member 3 by means of the hinge 5 described in Specification 270,100, [Class 65 (ii), Hinges &c.]. The lower end of the member 3 is split to form spring arms 11 which are normally spread into locking engagement with the outer member 1 by a conical plug 7 on a rod 6 normally raised by a spring 10. The locking engagement may be frictional, or by interengaging grooves or threads 12 on the arms and outer member. The rod 6 is depressed, to unlock the inner and outer member, by the short arms 20 of T-shaped levers 18 the long arms 19 of which are of disc form for actuation by the thumb and fingers. In a modification, the two levers 18 are replaced by a single lever the short arm of which is pivoted at a point beyond the end of the rod 6. As an alternative, locking means, toothed levers or toggle levers may be forced into engagement with the outer member 1 by the rod 6, and laterally moving press buttons with wedge or cam faces may replace the levers 18 for actuating the rod 6. According to the Provisional Specification, the invention is applicable generally to the locking of two telescoping members.
Patent GB-1069318-A (GB)
Title: Non-destructive testing of pressure vessels
IPC: G01N3/12
Filed: 1965-04-15
Abstract: 1, 069, 318. Measuring electrically. DOW CHEMICAL CO. April 15, 1965 [June 12, 1964], No. 16346/65. Heading G1N. A test vessel is stressed by pumping liquid into it, using a technique in which the increases in pressure and volume are automatically plotted against each other so that the elastic limit may be determined by observing the plot, which departs from linearity at the elastic limit. In determining the limit, the pumping is stopped as soon as the limit is reached. Once the limit is known, a departure from linearity below the limit indicates a leak in the vessel. The system is as shown, the pressure being determined by any suitable transducer and the increase in volume by metering the quantity of water pumped into the vessel in terms of the loss of weight of the container from which it is supplied, this being determined by a transducer such as a strain gauge load cell. The recorder is such as to plot one input against the other.
Patent GB-240562-A (GB)
Title: Improvements in steam generators
IPC: F23M7/00
Filed: 1924-07-08
Abstract: 240,562. Howden & Co., Ltd., J., Hume, J. H., and Owen, W. H. July 8, 1924. Ash-pits.-In a steam generator of the type comprising a cylindrical shell 1 having a number of internally fired furnaces 2 arranged in two or more rows, the furnaces of the lowermost row are provided with forwardly projecting ash pans 18 having inclined bottoms and hinged doors 19 which latter, when lowered to cover the ash pans, constitute, together with horizontal plates 20, a firing platform for the furnaces of the upper rows.
Patent GB-1492915-A (GB)
Title: Tilting mattress frame assembly for a turning bed
IPC: A61G7/00
Filed: 1976-04-23
Abstract: 1492915 Bed for turning an occupant BETSTONE INDUSTRIES Ltd 23 April 1976 [1 May 1975] 16482/76 Heading A4J A mattress frame for turning an occupant on to his side comprises a central section 42 pivotally connected to the bed frame, a pair of outer sections 44, 46 pivotally connected to the central section such that on tilting of the central section the outer section adjacent the raised side of the central section is tilted with the central section and the other outer section is pivoted relative to the outer section and a lever 18 secured to the central section and moveable by an electric, hydraulic or pneumatic drive to effect tilting of the central section. The drive may be a rotatable screw 26 which engages a threaded nut (23) Figs. 4 and 4A (not shown) pivotally mounted between a pair of spaced arms 22 secured to the lever. Tilting of the mattress frame may be limited by contact of a metal plate 33 on the lever with one of a pair of switches 32 mounted on a bar 31 parallel to the screw 26 and connected to an electric motor which rotates the screw through a worm and wheel drive. The screw and nut may be replaced by a hydraulic or pneumatic piston and cylinder unit (80, 82) Fig. 5 (not shown). The mattress frame may be tilted automatically at pre-selected time intervals.
Patent GB-695510-A (GB)
Title: Improvements relating to baby incubators
IPC: A61G11/00
Filed: 1951-07-12
Abstract: 695,510. Treatment chambers. GORDON ARMSTRONG CO., Inc. July 12, 1951 [July 12, 1950; Nov. 9, 1950; June 5, 1951], No. 16517/51. Class 81 (ii). A baby incubator comprises a housing containing a treating compartment and a heating com- 'partment containing a heating element enclosed in a heat dissipating envelope spaced from it, and a hollow casing from which the heating element projects and containing electrical connections between a power cable and the heating element, the casing being sealed to confine within it any explosion which may occur therein. A boxlike cabinet 2 is divided by a partition 5 into a heating compartment 4 and a treating compartment 3, a hinged cover 6 being provided. The sides of the box 2 may be formed from transparent panels. The box is supported on a metal stand (not shown) having electrically conductive casters. Regulatable perforations 18, 19 are provided so that the oxygen concentration within the cabinet 2 may be controlled. The exterior and interior surfaces of the cabinet 2 are sprayed with an electrically conductive film, the exterior surfaces then being provided with a transparent glaze of varnish, lacquer, enamel or resinous compositions. An opening 20 in the front of the heating compartment 4 receives a control panel 26 which is secured to a sectional housing unit 23 containing the electrical connections between a power cable 35, passing through and clamped to the panel 26, and a resistance wire 49 (Fig. 7), thermoswitch 45, pilot lamps 47 and an earthing wire 50. The heating element comprises the resistance wire 49 embedded in insulation 83 which has a covering 84 of alloy steel and is enclosed in a thin cylindrical tube 85 sealed at both ends and secured at one end to the housing unit 23. A water container (not shown) is carried on the tube 85 by supports 94. The surface area of the wall of the tube 85 is of such dimensions that it will not heat up to a temperature in excess of 356‹ F. The space between the tube 85 and the heating element may be filled with thermal insulating material. The end of the tube 85 is supported on a bracket 95 in the back wall of the cabinet 2. A nozzle for the supply of oxygen is provided in an insulated end wall of the treating compartment 3. Louvres are provided in the control panel 26. Wet and dry bulb thermometers, charts &c. are carried on a panel 106 within the treatment chamber 3.
Patent GB-1388033-A (GB)
Title: Apparatus for copying film images
IPC: G03B21/11
Filed: 1972-04-11
Abstract: 1388033 Electro-photographic apparatus MICRO INFORMATION SYSTEMS Inc 11 April 1972 [24 May 1971] 16535/72 Heading G2H In an apparatus for copying film images on a sensitized paper 144 the original transparencies are projected by light from a fan-cooled source 110 on to a mirror 116 from which, depending on the 'view' or 'print' position of a shutter mechanism 86, the image is directed either forwardly to a viewer 14 or rearwardly to a sheet of the sensitized paper vacuum held on a sloping conveyer 120. The paper is fed from a roll to cutters 158, 160, the subsequent sheets being charged by charging elements 171 and 173 prior to exposure and developed whilst moving in an arcuate path over a developer liquid spray tube 196. The machine is automatically operated by an endless motor driven cable carrying suitable cam devices which operate electric switches in predetermined sequence.
Patent GB-438778-A (GB)
Title: Improvements in or relating to cycle and like free-wheel hubs
IPC: B62L5/00
Filed: 1935-06-07
Abstract: 438,778. Free-wheel and coaster hubs for cycles &c. FICHTEL & SACHS AKT.- GES., Schweinfurt, Germany. June 7, 1935, No. 16564. Convention date, June 7, 1934. [Class 136 (ii)] In a freewheel cycle &c. hub of the type having a roller clutch in which the rollers are mounted in a guiding ring or cage and are adapted to be held in the inoperative position by an auxiliary ring rotatably mounted on the cage so as to be movable partially over the openings in the cage (whereby the cycle may be wheeled backwards or forwards without moving the cranks), the auxiliary ring is positively connected to the roller-driving member so as to rotate therewith relatively to the cage. The rollers 7 are adapted to be moved outwards through apertures in a guiding ring or cage 5 under the action of the inclined bottom surfaces of recesses in the driver 6, so as to drive the hub on forward pedalling. An auxiliary locking ring 9 surrounding the cage 5 is positively connected to the driver 6 by one or more pins 14 engaging incisions in the edge of the ring 9, so that on back-pedalling (but without applying the brake), the ring 9 is rotated backwards relatively to the cage, (as in Fig. 3), so as to hold the rollers 7 in the free or retracted position. Axial displacement of the ring 9 is prevented by the engagement of indentations 11 thereon with a peripheral groove on the cage 5. The invention may also be applied to roller clutches for expanding the brake sleeve in coaster hubs.
Patent GB-522463-A (GB)
Title: A process for the production of sintered bodies of light metals
IPC: C22C1/04
Filed: 1939-06-06
Abstract: 522,463. Obtaining coherent masses from powdered metals; porous metal bodies; alloys. DEUTSCHE GOLD - UND SILBER - SCHEI - DEANSTALT VORM. ROESSLER. June 6, 1939, No. 16627. Convention date, June 28, 1938. [Class 82 (i)] [Also in Group V] Sintered bodies for bearings, brushes &c. are made from powders of light metals, including magnesium and beryllium and particularly aluminium and its alloys, mixed with powders of solders containing, for example, lead. zinc, tin, cadmium, bismuth, and antimony, or fluxes, for example alkali or alkaline earth carbonates, boric acid, borates, and phosphates, or one or more of the constituents of such solders or fluxes, for example zinc and lithium carbonate, with or without graphite, the mixture being pressed and sintered preferably in a reducing atmosphere such as hydrogen: The metal or alloy powder may first be provided, for example electrolytically, with a coating of a metal such as copper, tin, zinc, or iron. An alloy consisting of 30 per cent. of lead, 30 per cent. of tin, 25 per cent. of zinc, and 15 per cent. of cadmium is referred to as suitable solder powder.