baber/WOPTO huggingface dataset:
Patent GB-873147-A (GB)
Title: Improvements in or relating to automatic telephone systems
Inventor: GALVIN JOHN LESLIE
IPC: H04M15/10
Filed: 1957-02-19
Abstract: 873,147. Automatic exchange systems. AUTOMATIC TELEPHONE & ELECTRIC CO. Ltd. Dec. 19, 1957 [Feb. 19, 1957], No. 5530/57. Class 40 (4). Subscribers of two different categories are charged different metering fees, metering pulses of one kind affecting the meters of both categories and metering pulses of another kind affecting the meters of only one category. A subscriber's meter MTR, Fig. 3, may be connected through a rectifier MR either to positive battery or to earth according to whether the subscriber is on a business tariff B or a residential tariff R. In the former case the meter responds to both +100 and + 50 volt pulses. In the latter case the meter responds only to the higher voltage pulses. Detailed description, Figs. 1, 2. The first dialled digit besides being repeated over junction JN also drives a fee discriminating uniselector FD. The uniselector FD starts at position 1 and advances two steps for each impulse. It is guarded against interference by subsequent digits. When the called party answers relay D operates to energize DD. The first subsequent " S " pulse on lead SP energizes DA. The next " Z " pulse operates DB. Metering pulse terminals MP1-MP6 during this " Z " pulse delivery 1-6 pulses over strappings to appropriate odd-numbered contacts of bank FD5 and even-numbered contacts of bank FD6. Since the wipers of FD stand at an oddnumbered contact only FD5 is effective to energize metering relay J an appropriate number of times. FD3 supplies a corresponding number of +100 volt pulses over contacts J1 to the P wire of the calling line. This is the basic metering fee and is effective on the meters of both residential and business subscribers. At the end of the " Z " pulse DA and DB release and uniselector FD advances one step to an even-numbered position. An " S " pulse reoperates DA and the next " Z " pulse reoperates DB. Wipers FD6 and FD4 are now effective, one to supply pulses from the appropriate terminal MP1-MP6 to relay J, and the other to supply a corresponding number of +50 volt pulses to the P wire. This is the supplementary fee and is effective only on the meters of business subscribers. At the end of this " Z " pulse DA restores but DB holds up whereby subsequent " S " pulses have no effect on the metering relay.
Patent GB-445906-A (GB)
Title: Improvements in or relating to electrically operated hand tools
IPC: C10B5/10
Filed: 1935-02-21
Abstract: 445,906. Portable drilling &c. machines. BOSCH AKT.-GES., R., 4, Militõrstrasse, Stuttgart, Germany. Feb. 21, 1935, No. 5537. Convention date, Feb. 22, 1934. [Class 83 (iii)] [See also Group XXIII] In an electrically operated grinding or other tool comprising a motor 6 secured in cantilever fashion on a tool casing 2 and having a switch 8 carried by a bracket 7 on the motor, the whole being enclosed by a motor casing 9, the latter casing carries a switchoperating lever 13 which is engageable with the switch by the axial motion required for placing the casing over the motor. The switch consists of a snap-member 8b, Fig. 2, carrying a roller 8h which passes between spring fingers 8c to close the circuit, and is pressed by a spring 8m against a slide 8e guided by pins and slots 8d. A pin 8f on the slide is engaged by a radial slot in the lever 13 which consists of a disc pivoted to the casing 9 and has a milled lug 13a projecting through a slot of the casing for actuation by the operator. On sliding the casing 9 axially over the motor, the pin 8f enters the radial slot in the disc 13 and the casing is then secured by a ring nut 10. The casing 9 also carries the cable lead-in 11 and a suspension hook 12.
Patent GB-846242-A (GB)
Title: Improvements in or relating to folding doors or partitions
Inventor: PAULSRUDE PHILIP MELANCTHON
IPC: E06B3/48
Filed: 1959-02-18
Abstract: 846,242. Folding and sliding doors or partitions. WOOD SPECIALITY PRODUCTS Inc. Feb. 18, 1959, No. 5549/59. Class 20(3) A folding door or partition comprising slats 14 hinged together by the pliable connectors 22 engaged in longitudinal grooves formed in the edges of the slats, the position of the grooves maintains adjacent slats at an angle of less than 180 degrees to each other when the door is in the closed position. When the door is opened the slats fold into a face to face relationship. Each slat is provided with an end cap 30 at its upper end, in the centre of which is disposed a slide 54 which runs in the track 16 fitted to the doorway header 10.
Patent GB-568882-A (GB)
Title: Improvements in or relating to heat exchange devices
IPC: F28F21/08
Filed: 1941-04-30
Abstract: 568,882. Making heat-exchangers and flame traps. COLTMAN, J. L., and IMPERIAL CHEMICAL INDUSTRIES, Ltd. April 30, 1941, Nos. 5585/41, 16391/41 and 7167/42. [Classes 83 (ii) and 83 (iv)] Soldering.-Heat - exchange devices incorporating thin-walled tubular elements with fins, or plate or film-type elements, such as intercoolers, radiators, oil coolers, flame traps for internal-combustion engines, are made by forming at least the surfaces of the elements of nickel or of an alloy comprising essentially nickel and copper, interposing between the parts to be bonded a thin film non-unitary therewith consisting of a thin foil of copper or of a copper alloy containing at least 95 per cent of copper, assembling the elements and heating in a relatively inert atmosphere to a temperature substantially below the melting point of nickel or solidus point of the alloy, but sufficiently high to melt the interposed film so as to unite the parts together. The parts may consist of nickel or a copper-nickel alloy, such as 70/30 cupro-nickel or the alloy sold under the Registered Trade Mark " Monel," or may consist of a ferrous base coated therewith, preferably by rolling. The copper brazing alloy should have a liquidus temperature at least 40‹ C. below the solidus temperature of the elements and may consist of 95/5 cupro-nickel or 95 per cent copper and 5 per cent tin. The heating is effected in 10-20 minutes in a furnace containing an atmosphere of burnt coal gas, hydrogen, or cracked ammonia. Heating is controlled at 1090‹ C. to 1160‹ C., or where the parts are formed from copper-rich cupronickel with a solidus temperature below 1160‹ C., to about 10‹ C. below the solidus temperature, which should preferably not be less than 1130‹ C. Specifications 484,371 and 568,567 are referred to.
Patent GB-876654-A (GB)
Title: Improvements in and relating to cup-shaped rotary brooms for street sweepers
IPC: A46B13/00
Filed: 1960-02-17
Abstract: 876,654. Brushes. NIELSEN, A. T. Feb. 17, 1960 [Feb. 20, 1959], No. 5585/60. Class 19. A cup-shaped rotary broom for street sweepers comprises a plate 1, a frusto-conical member 2 secured to the plate 1 and serving, with a clamping ring 9 to deflect the bristles into the desired axial angular relationship. The bristles 10 are prefabricated into an annular assembly, the bristles being in hair-pin form and held by a thin annular groove plate member 12 and binding wires 11. To fit or replace a brush assembly, the assembly is placed upon the ring 9, the member 2 is rested on the top of the assembly and the ring is pulled towards the plate 1 by long bolts which project from a plate which is placed against the underside of the ring 9 and pass through some of the holes 4. When the ring 9 is within reach of the bolts 5, these are screwed into the ring, the long bolts and associated plate are removed, and the remainder of the bolts 5 are inserted in the holes 4. The groove plate 12 is distorted by the compression ring 9 which has spikes 13 for preventing bodily rotation of the bristles in the holder. The bristles may be prefabricated into frustoconical form in which case the ring is jammed into the corner between the plate 1 and member 2.
Patent GB-725329-A (GB)
Title: Improvements relating to electric inductances
IPC: H01F29/14
Filed: 1953-02-27
Abstract: 725,329. Inductors. PATENT MANAGEMENT, Inc. Feb. 27, 1953 [Feb. 28, 1952], No. 5599/53. Class 38 (2). An inductor comprises at least one coil-either coil 10 or coil 11 or both-through which pass two separate spaced closed rings 14, 15 of magnetic material, two members 16, 17 of magnetic material bridging the space between the rings, at least one of the members, 16, being a permanent magnet or being an electromagnet to cause magnetic fluxes in the two rings which link the coil or coils in opposite directions. The magnet 16 causes a flux to pass downwards in the limb of the ring 15 which passes through the coil 10, along the bridging member 17 and upwards in the limb of the ring 14 which also passes through the coil 10; a similar flux condition existing in the coil 11 if used. This opposition of fluxes linking a coil renders the inductance of the inductor less sensitive to changes in the value of an alternating voltage applied thereto; the value of inductance being variable by movement of the magnet relative to the rings or by variation in the value of the direct current flowing in the energizing coil of the electromagnet.
Patent GB-1022274-A (GB)
Title: Method for intensifying optical images
IPC: H01J31/52
Filed: 1964-02-11
Abstract: 1,022,274. Cathode-ray storage image intensifiers. CSF-COMPAGNIE GENERALE DE TELEGRAPHIE SANS FIL. Feb. 11, 1964 [Feb. 15, 1963], No. 5616/64. Heading H1D. An optical or infra-red image is both intensified and its contrast increased by using a photocathode to produce first a fast electron image which impinges upon a mesh storage grid to produce a charge pattern image thereon, and subsequently to produce a slow electron image which is passed through the meshes of the storage grid on to a luminescent screen, whereby an approximately square low response is obtained. Storage grid 6, 7, formed by a wire grid coated with dielectric secondary electron emissive material, is first stabilized at the potential-earth-of the photo-cathode 2, which is flooded by a light source 12 to provide a uniform slow electron stream passing through focussing electrodes 3, 4 and accelerating grid 5, and then by the application of a positive pulse 11, left 10 volts negative with respect to the photo-cathode. Light 12 is switched off and image 13 projected on to the photocathode, which is connected to the- 2kv. supply to provide a high velocity electron image on the storage grid. The photo-cathode is then again earthed, with image 13 still incident upon it, whereby a slow electron image is projected through the apertures of the storage grid to produce an optical image on the metallized luminescent screen 8. The storage grid may, alternatively, employ dielectric material which exhibits, instead or additionally, bombardment induced conductivity, e.g. magnesium or zinc fluoride. A series of intensifiers as above may be operated in cascade, or may be constructed with the luminescent screen of one formed on the same plate as the photocathode of the next.
Patent GB-601383-A (GB)
Title: An improved current transformer of the bushing type
IPC: H01F38/30
Filed: 1945-03-07
Abstract: 601,383. Transformers. LANDIS & GYR SOC. ANON. March 7, 1945, No. 5722. Convention date, March 13, 1944. [Class 38 (ii)] In a current transformer an insulating bushing 1 through which passes the primary winding, is anchored to a housing 2 inside which is the secondary winding by the pressure of the inner edge of a ring 4 drawn down by bolts 3 on the conical faces of two or more segments 5 surrounding the insulator 1.
Patent GB-418341-A (GB)
Title: An improved holder for cosmetic pencils or the like
IPC: A45D40/02
Filed: 1934-02-21
Abstract: 418,341. Holder for cosmetic pencils. CZETTEL, R., 28, Neubaug³rtel, Vienna. Feb. 21, 1934, Nos. 5734 and 5735. Convention dates, Feb. 22, 1933 and Feb. 16, 1934. [Class 18.] A holder for cosmetic and like sticks is provided with a plunger which partially projects from one end thereof, and is depressed within the holder in order to cause the stick to slide out from the said end. A plunger 11 gears through racks 14, 6, and pinion 15 with a sliding sleeve 4 for lipstick 5 disposed in an adjacent part of the holder, so that when the plunger is depressed against the action of a spring 19, a cover 13 hinged thereto is jerked open against the action of a torsion spring and the lipstick 5 is protruded. A detent may be provided for temporarily holding the plunger in its depressed position. As the stick wears it may be fed forward by rotation of the knob 9. In a modification a U-shaped sliding frame 22 forms the plunger whilst a similar frame 23 holds a ferrule which contains lipstick by means of detents 39, which grip lateral indentations in the ferrule. Depression of the plunger opens the cover as before and lifts the frame 23 by tilting the end of a rocking lever 32 the other end of which engages the frame 23. Tho rocking lever is returned by a spring 36. A catch 27 engages in apertures in the wall of the casing to maintain the plunger in the inoperative and operative positions respectively.
Patent GB-266904-A (GB)
Title: Improvements in road signs for directing vehicular and other road traffic
IPC: E01F9/07
Filed: 1926-03-02
Abstract: 266,904. Blagburn, T. March 2, 1926. Paving blocks; blocks, special shapes of.-A sign or line for directing vehicular traffic on roads, which is arranged tc reflect the lights from passing vehicles is characterized by an independent retaining member detachably fixed to the road and having a central reflector surrounded bv other detachably fixed reflectors. Fig. 2 shows one construction in which a metal frame c is bolted to a concrete base-plate a, and a rubber pad 4 is interposed between them. The framing is similar in appearance to a wheel, and reflecting members d made of opalescent or other glass are fitted between the spokes and rest under the flanged rim in addition to being embedded in cement. Raised parts c<2> of these spokes act as protectors to the glass. The central reflector d<1> rests on a reflecting or other plate 2 over a recess in the frame c, and is secured by a screwed-on ring e. In a modified construction the central reflector comprises four lenses fitted in front of deflectors and arranged to project light upwardly in an oblique direction. Fig. 6 shows a glass or like reflecting sphere p mounted in front of a reflector q, and spring-supported at s to yield under pressure of vehicle wheels. A rubber ring t cushions the movement.
Patent GB-949628-A (GB)
Title: Transistorised d.c. to d.c. converter
IPC: H02M7/525
Filed: 1961-02-17
Abstract: 949,628. Converting. STANDARD TELEPHONES & CABLES Ltd. Feb. 17, 1961 [Feb. 24, 1960], No. 5948/61. Heading H2F. [Also in Division G3] A D.C. to D.C. converter comprising a transistor oscillator whose output is rectified by a diode 4, includes a circuit arrangement of transistors 6 and 9 and a Zener diode 8 to provide a stabilized output. An oscillator transistor 1 has its emitter-collector path in series with the primary winding of a transformer 2 across input terminals 21, 22. The transformer has a secondary winding connected to the diode 4 and a further winding 3 whose lower portion is a feedback winding connected to the base of transistor 1 and so wound that increasing collector current induces a voltage (negative upwards) to increase the base current through the transistor 6 and diode 10. A capacitor between the lower end of the winding 3 and the terminal 22 is positively changed with respect to 22. The increasing base current causes the collector current to rise until the transistor saturates when the voltages across the output winding and the winding 3 reverse, stored energy is discharged into the load and the transistor cuts-off. The voltage then appearing across the winding 3 is applied through diode 7 to charge a capacitor 12. This voltage is applied to the base of a transistor 9 whose collector-emitter path together with the emitter-base path of a transistor form effectively a variable resistance in the emitter base path of the transistor 1. This variation of the voltage on the base of transistor 9, which is a measure of the output voltage, acts on transistor 1 to keep the output constant. The supply for the transistors 6 and 9 is derived from the capacitor 14. A diode 11 is included to overcome difficulties attendant on a rise in temperature.
Patent GB-433881-A (GB)
Title: Improvements in control systems for electrically propelled road vehicles
IPC: B60L3/00
Filed: 1934-02-23
Abstract: 433,881. Master control of motors. GENERAL ELECTRIC CO., Ltd., Magnet House, Kingsway, London, and CROFT, E. H., c/o General Electric Co., Witton, Birmingham. Feb. 23, 1934, No. 5996. [Class 38 (iii)] Safety arrangements.-A vehicle motor 7 supplied from an external source 1 is controlled by a master control system including contactors energized from a battery 37, and means are provided, responsive to the voltage applied to the motor, to control certain of the contactors to effect a modification of the motor circuit when the voltage falls to a low or zero value, whereby, when the voltage is restored and the controller 11 is maintained in a running position beyond the first or adjacent running position, the motor current is suitably limited. The circuits of the coils 46W- 50W of armature resistance and field diverter resistance contactors 46-50 include contacts 36 of a relay 36W energized by the supply voltage, and normally open auxiliary contacts 45 of the contactor 46. Thus when the supply fails, contacts 36 open and contactors 46-50 are de-energized to insert all the armature resistance and restore the field strength, the main line contactors 56 being maintained closed through contacts on the controller 11. The normally open auxiliary contacts 45 of the contactor 46 are in parallel with contacts 21, 22, closed only in the second position of the controller 11. Thus the contactor 46 closes in the second position and maintains itself until the controller is returned to its first position, or the voltage relay 36W operates. In the latter case the controller must be returned to its second position before the accelerating contactors can be reclosed. When the contactors 46, 47, and 49 are first closed the circuits of their coils include resistances 52, 54, 55, but subsequently the coils of contactors 47 and 48, are connected in series, and similarly the coils of contactors 49, 50, the resistances 54, 55, being disconnected.
Patent GB-1211676-A (GB)
Title: Contact arrangement
Inventor: BLEIBTREU ALEXANDER
IPC: H01H1/42
Filed: 1969-02-05
Abstract: 1,211,676. Switch contacts. E. SCHEUBECK. 5 Feb., 1969 [15 Feb., 19681, No. 6100/69. Heading H1N. A contact arrangement comprises two laterally movable contacts 2, 3 which are situated one above the other and which receive a rigid fixed contact 1 between them, particularly for tap selectors, invertors and reversers of regulating transformers, the fixed contact 1 being constructed as a round bar while the movable contacts 2, 3 are constructed as dihedral strips formed from flat strips bent approximately at right angles about the longitudinal direction and forming together in cross-section a not completely closed square, the movable contacts 2, 3 being provided on each internal oblique surface with a protuberance 8 as a contact point, a recess 9 being provided in each case between protuberances 8. The purpose is to allow cooling oil access to the contact points. When the contact arrangement is used on regulating transformers as mentioned above the fixed contacts are affixed to insulating bars arranged in a circle, the movable contacts connect the fixed contacts in succession with a centrally situated slip-ring, the movable contacts performing a circular movement. Lugs 10 are provided to enable the movable contacts 2, 3 to slide on to fixed contact 1 more smoothly.
Patent GB-435698-A (GB)
Title: Improvements in charge-moistening devices for internal combustion engines
IPC: F02M1/00
Filed: 1934-02-26
Abstract: 435,698. Admission pipes. GILBERT, H. G., Linslade, Pound Lane, Bowers Gifford, Pitsea, Essex. Feb. 26, 1934, No. 6135. [Class 7 (ii)] In an arrangement in which moist air is added to the combustible mixture, the two are separated as they flow through the induction pipe by a partition 7 which extends up to the cylinder port, the combustible mixture entering the cylinder on that side of the partition nearer the sparking plug. AT-member 1 is connected by opposite limbs to a moistening device and the carburetter, and between the limbs a partition 7 extends down the leg of the T-member where it is twisted through a right-angle as shown and bent up, either in front of, or behind, the valve guide 9. In a multi-cylinder engine the partition extends into each cylinder branch.
Patent GB-491558-A (GB)
Title: Improvements in or relating to land vehicles
IPC: B60P3/07
Filed: 1937-03-02
Abstract: 491,558. Vehicle fittings for loading; trailer vehicles. BROCKHOUSE & CO., Ltd., J., and DEAR, A. T. C. March 2, 1937, Nos. 6148 and 9468. [Classes 78 (iii) and 78 (iv)] [Also in Group XXXII] A trailer vehicle for transporting handcarts or other loads is provided with means pivotally mounted thereon for raising the load from the ground to a carrying position on the vehicle. In the embodiment shown, the trailer is provided with a frame 18 pivotally mounted on its axle 13 and comprising a pair of members 19 provided with trunnions 28 within each of which is pivoted a bearing block 30 recessed at 31 to accommodate the axle of a hand cart. The hand cart is raised on to the vehicle by pivoting the frame 18 by means of cables 34 secured to a hand-operated roller 32, and is secured to the frame in this position by a chain 39 engaging round the front end of a bar 37. The frame is locked in position by a pin 36 engaging in apertures in lugs 36a, 36b on the frame and trailer respectively: The carrying position of the frame is determined by a pair of screwed rods 35 engaging a stop-bar 24. The hand cart is unloaded by adjusting the rods 35 so as to pivot the frame and hand cart rearwardly until their common centre of gravity passes over the trailer axle, whereupon on release of the winding mechanism, the frame automatically falls to unloading position. In alternative constructions for use on rough ground, the frame 18 may be pivoted on a bar extending between the members 10 of the trailer and these members mounted on the trailer axle by a spring suspension, or the frame mounted directly on the axle by a spring suspension. Specifications 410,095, [Group XXXI], and 469,134, [Group XXXII], are referred to.
Patent GB-608701-A (GB)
Title: Pipe connection
IPC: F16L13/11
Filed: 1946-02-27
Abstract: 608,701. Pipe joints. JANSSEN, H. J. J. Feb. 27, 1946, No. 6166. Convention date, Feb. 17, 1941. [Class 99 (i)] Pipes are connected by a rubber or like sleeve 3 within a socket 5 and a filling 4 of cementitious material introduced under pressure through openings 6, which are plugged before the filling hardens. The filling comprises material which expands by the evolution of gas by chemical reaction such as a mixture of cement and aluminium powder and water or calcium carbide and water. Reference has been directed by the Comptroller to Specification 538,067.