baber/WOPTO huggingface dataset:
Patent GB-1208136-A (GB)
Title: Electrical circuits
Inventor: HILL WILLIAM FRANK
IPC: G08G1/042
Filed: 1967-04-14
Abstract: 1208136 Switching circuits JOSEPH LUCAS (INDUSTRIES) Ltd 29 March 1968 [14 April 1967] 17225/67 Headings G4T and T12X3 The usage of a selected road or parking space by a vehicle is measured by providing a continuous alternating induction field of specified frequency at selected points on the road or an intermittent field in a parking zone and providing a motor on the vehicle which operates a counter once each time a said induction field is detected. When the vehicle passes over a loop buried in the road, a tuned circuit L1, C2 picks up energy from the field and turns on transistor T1 which then supplies base current, smoothed by capacitor C3, to transistor T2 which supplies a positive feedback through resistor R4 to the base of T1. A differentiating capacitor C4 produces a positive spike when T2 starts to conduct and thus turns on a Darlington pair T4, T5. Feedback from T5 through transistor T3 keeps T4 and T5 conducting until capacitor C5 charges. The output from T5 energizes a relay L2 to operate the counter 14 and a warning lamp 13. An indication that the meter is operating satisfactorily may be given to an observer outside the vehicle. In normal conditions no current flows in the circuit.
Patent GB-1362172-A (GB)
Title: Instruments
IPC: G01F9/00
Filed: 1970-12-29
Abstract: 1362172 Delivering measured quantities of liquid T J PACK 29 Dec 1970 [10 May 1970] 17434/70 Heading B8N [Also in Divisions G1 and G4] In a vehicle fluid efficiency meter where increments of distance travelled are counted for a predetermined quantity of fuel consumed for the counts update a visual display of the fuel consumed with the preceding predetermined quantity of fuel the liquid fuel meter comprises twin chambers 159, 161 each having a float Fl, F2 and by means of sliding valve members 177, 201 one chamber is filled from inlet 163 of the fuel in the other chamber is consumed by the vehicle from outlet 164. The chambers are interconnected via air passage 187 to assist filling and emptying. Each float operates a shut-off valve 185, 186 when the respective chamber is full. Chamber 161 is larger than 159 and the latter only acts as a metering chamber and increments of distance are counted as the float F1 falls between reed switches 118, 125 which are operated by a disc magnet 209 carried by the float by means of the contact mechanism shown, which is essentially similar to that described in Specification 1,362,171. Operation of the upper reed switch 118 as the chamber 159 is being filled causes the valve mechanism 169, 201 to reverse so supplying fuel to the vehicle from metering chamber 159 and filling the just emptied chamber 161. Both the reed switches then reverse the situation. An indicator (Fig. 1) has a clock face 11 and an indicator needle I<SP>1</SP> carried on a central shaft 5 having a ratchet mechanism 36 released by solenoid 42. A second indicator I on a shaft 6 is reset to datum upon the upper reed switch operating its ratchet release solenoid 52, and thereafter is driven forward and as the float falls pulses are generated by the pawl of the vehicle mileometer which operates a solenoid operated pawl 56 driving a wheel 22. If the distance travelled for this predetermined quantity of fuel is greater than that for the previous one the lug 17 of the indicator I will drive the indicator I<SP>1</SP> forward when the lug 17 contacts lug 18, if the distance travelled is less the two lugs do not come into contact and when the float F1 reaches the bottom of the metering chamber reed switch 125 operates solenoid 42 to release indicator I<SP>1</SP> so it falls back against the lug 17 of indicator I so updating the visual indication of miles per gallon. A metering mechanism of the type described in Specification 1,362,171, may also be used. A safety chamber containing a float may be placed upstream of the metering mechanism and if the float falls below a predetermined level gives an alarm indicating failure of the fuel supply.
Patent GB-260214-A (GB)
Title: Improvements in automatic telephone substation instrument circuits
IPC: H04M1/58
Filed: 1926-07-12
Abstract: 260,214. Dicker, S. G. S., (Assignee of Pye, H. C.). Oct. 23, 1925, [Convention date ]. Automatic exchange systems.-Relates to common batterv anti-side-tone substation circuits and comprises several features illustrated in the three arrangements shown. In the first arrangement, Fig. 1, employing a direct-current receiver, the primary 13 of the induction coil is in series with both transmitter 7 and receiver 8, and the secondary 14 which is coupled and multipled to the primary so as to have an auto-transformer action is connected to the mid-point of the condenser 9 and bell 10. A third winding 12 of the induction coil in series with a condenser 11 acts as an artificial line to prevent the receiver 8 from being affected by the microphone 7. During impulsing, the transmitter 7, receiver 8 and winding 13 are short-circuited, winding 12 is directly shunted by condenser 11, whilst a circuit comprising condenser 9 in series with bell 10 shunted by coils 13, 14 in series is connected across the impulse contacts 3. This arrangement prevents the bell from responding to the impulses. The second arrangement, Fig. 4, for use, for example, in a cradletype instrument, is such that the microphone 7 and receiver 8 mounted as one unit can be connected to a second unit comprising bell, condenser, induction coil and number dial by a threeconductor cord. The connections of the various elements are re-arranged as shown, with the result that an alternative direct-current path exists across the conductors 2, 1 through dial 3, winding 12 and bell 10 to hold up the exchange apparatus in the event of a complete break at the microphone 7. During impulsing, the connection of condenser 11 across winding 14 reduces the inductive effect of winding 13 in the impulse circuit. In the third arrangement, Fig. 7, which employs a permanent magnet receiver 38, the microphone circuit includes only one winding 43 of the induction coil, the compensating circuit includes a second winding 42 and condenser 39, whilst the receiver is in series with the third winding 44 which is coupled to both windings 42, 43. During operation of the microphone, equal and opposite currents in the windings 42, 43 cause no effect to be produced in winding 44 and the receiver, but during reception the receiver is excited by current through windings 43, 44 whilst the current in winding 42 is opposed by current induced by winding 43. During impulsing, the microphone, receiver and winding 44 are directly short-circuited, and the impulse springs are shunted by a circuit comprising condenser 39 in series with bell 40 which is shunted by windings 42, 43. The shortcircuit across winding 44 reduces the inductive effect of winding 43 in the impulse circuit. Specification 177,130 is referred to.
Patent GB-1389332-A (GB)
Title: Magnetic tape copying apparatus
IPC: G11B5/86
Filed: 1972-04-14
Abstract: 1389332 Copying magnetic tapes MATSUSHITA ELECTRIC INDUSTRIAL CO Ltd 14 April 1972 [16 April 1971 (2) 19 April 1971 22 April 1971 7 June 1971 8 June 1971 12 July 1971 (2) 16 July 1971 (2) 7 Aug 1971 23 Aug 1971] 17439/72 Heading G5R  A magnetic tape copying apparatus comprises a heater 13 for heating the magnetic surface of a slave tape 2 to near the Curie point, and a compressed air unit 12 in close proximity to a capstan 3 to define a gap, the master and slave tapes 1, 2 being pressed by the compressed air against the capstan 3 for transport through the gap with their magnetic surfaces in close contact. The compressed air unit may include discharge nozzles 20 (25-27), Fig. 13 (not shown), or a porous member (33), Fig. 16 (not shown), made of a sintered alloy.. Such a porous member (67), Figs. 39-41 (not shown), may be movable and urged by air pressure towards the capstan 3, which then has an elastic periphery. The heater may include a burner (22), Fig. 12 (not shown), which heats a member such as a plate (19) or a cylinder (37), Fig. 17 (not shown), in contact with or adjacent to the slave tape 2. The heated members may be porous, Figs. 34, 35 (not shown), or may have apertures, Fig. 18 (not shown), and may be supplied with hot compressed gas, so that the slave tape 2 is spaced from the heated member and heated by the discharged hot gases and by radiation. The members may also have varying thickness, Figs. 26, 29 (not shown), thermal conductivity, Fig. 30 (not shown), or curvature, Fig. 31 (not shown), for producing a desired temperature distribution. The distribution of burners may also be suitably chosen, Figs. 21-15 (not shown). The member may alternatively be heated by an infra-red heater, or an electrical or high-frequency heater, Fig. 36 (not shown). Alternative heaters comprise hot fluid flowing through a hollow body, Fig. 37 (not shown), or a rotatable member (164), Fig. 38 (not shown), within which is a heater (65) such as a lamp or an electrical or silicon carbide element. Both the heater and the compressed air unit may be resiliently mounted, Fig. 42 (not shown).
Patent GB-1420040-A (GB)
Title: Sleeve
IPC: G11B23/107
Filed: 1974-04-22
Abstract: 1420040 Latch fastenings INTERNATIONAL BUSINESS MACHINES CORP 22 April 1974 [6 Aug 1973] 17472/74 Heading E2A A sleeve for insertion into a hollow hub member 44 comprises an integral, open-ended cylindrical body of stiff, resilient material, e.g. metal or plastics, having first and second axial end portions joined by a rib 15, each end portion having a plurality of slots 23, 24 extending from within the limits of the rib to the respective ends so that each end portion consists of a plurality of axially extending resilient fingers 14; 52, 17. As shown, each finger includes a nose portion 152 having a cam surface 62, a groove 66 and a shoulder 64 and pairs of fingers 52a, 52b are separated by slots 24 and the slot 25 between those fingers is bifurcated to form shorter fingers 17 having lugs 19. The hub 44 has apertures 20 for reception of the lugs 19 and is inserted into a cover 26 having a flange 36 the lock shoulder 38 of which engages the shoulders 64 of the fingers 52. The hub 44 is intended to carry a flexible, wound web 54, e.g. a magnetic tape. For removing the cover 26, the annular cam surface 76 of a tool 74, Fig. 6, engages the cam surfaces 62 of the fingers to urge the latter inwardly and to clear the shoulders 64 from the shoulder 38. The cartridge formed by the hub 44 and cover 26 may be, for storage, carried by a detent (12), Fig. 5, (not shown), having resilient fingers (68) with beaded tips (72) which engage in the grooves 66.
Patent GB-482272-A (GB)
Title: Improvements in nuts
IPC: F16B39/30
Filed: 1936-06-24
Abstract: 482,272. Nuts. PETERS, E. C., and PETERS, D. C. June 24, 1936, No. 17506. Drawings to Specification. [Class 89 (i)] The aperture of a nut is cut with a normal screw thread of normal diameter with the full normal allowance for the major portion of its length from the leading end but close to the other end converges towards said other end and is cut with a screw thread of diameter slightly less than the normal. The latter screw thread is preferably shallower and of wider angle than normal. The threads are produced by the use of a series of taps.
Patent GB-459699-A (GB)
Title: Improvements in fishing nets
IPC: A01K73/02
Filed: 1936-06-24
Abstract: 459,699. Trawling - gear. V.D., Ltd., 54, Victoria Street, Westminster. June 24, 1936, No. 17522. Convention date, June 26, 1935. [Class 48] A fishing-net, with or without belly and with a rear pocket operating substantially at the level of the head rope has the lower part of the pocket maintained above the sea bed by a sledge or like rigid structure which also prevents the escape of fish below the rear pocket. A bellyless net is shown having the mouth of its rear pocket supported by a cylinder G connected by upper and lower ropes 2, 3, 2<1>, 31 to cones H, H<1> on the tow ropes. Netting k, k<1> fills in the space between the ropes to prevent escape of fish. The sides of the net are strengthened by slack cables 4, 41 connected to the cones H, H<1>. The cylinder G shown does not rotate but it may be mounted to rotate in a vertical frame connected to the ropes 2, 3, 2<1>, 31. Alternatively, the cylinder may be replaced by a beam N, Fig. 5, with iron shoes O, O<1>, loose chains P or a netting curtain depending from the beam to prevent escape of fish. Alternatively, the curtain may be replaced by a lower pocket having a lower part of reduced extent to minimize wear.
Patent GB-226488-A (GB)
Title: Improvements in secret signalling systems
IPC: H04K1/04
Filed: 1924-07-23
Abstract: 226,488. Western Electric Co., Ltd., (Assignees of Fletcher, H.). Dec. 18, 1923, [Convention date]. Distortion of voice currents, effecting and neutralizing; thermionic modulating systems.- Speech and like waves are transmitted after division into sub-bands some of which are interchanged with or without inversion, while keeping the total range of the resultant wave within the same frequency limits as the original wave. As shown, speech waves from a transformer 11 are divided by filters F<1> - - F<3> into sub-bands 0 to 800, 800 to 1600, and 1600 to 3000. The outputs of filters F<1>, F<2> are passed to balanced modulating systems M<1>, M<2>. Waves from sources 13, 16 are added so that either the upper or lower side-band of the output in each case has the required frequency, and these side bands are passed to filters F<4> , F<5>, and combined with the unchanged sub-band from filter F<3> in transformer 17. The output of the latter is applied to a balanced modulator M<3>, supplying a radio transmitting antenna TA, which preferably suppresses the carrier and one side-band. Or the sub-bands from the filters F<3> - - F<5> may be transmitted directly over a telephone or other line. A receiving arrangement is described comprising a demodulating system for the carrier, the output of which is divided by filtering into subbands which are restored by modulation with an added frequency when they have been shifted and filtered and are recombined in a telephone receiver. The sub-division of the speech wave is preferably such that the sub-bands having the greater voice energy are of less frequency width than sub-bands of less voice energy, and the transposition is preferably between bands of high energy content.
Patent GB-444168-A (GB)
Title: Photographic projection apparatus having an automatic focussing device
IPC: G03B27/36
Filed: 1934-06-14
Abstract: 444,168. Photographic projectionprinting apparatus. YRONDY, L. J. L., 15, Rue Edouard-Vaillant, Puteaux, Seine, France. June 14, 1934, No. 17617. Void [Abridged as open to inspection under Sect. 91 of the Acts, Dec. 24, 1934]. [Class 98 (i)] The apparatus consists of a supporting frame 4 carrying a support 3 for the sensitive material, and a light source 8, negative holder 13, and a projection lens 7 provided with a reflector 1, and connected to the light source by bellows 6. The parts 1, 7, 6, 8, are movable bodily towards the support 3 and simultaneously the separation of the parts 7 and 8 is effected by a cam surface 12 on the frame 4, so as to maintain focus. A cable 15 attached to the negative holder 13 is provided to facilitate removal of the latter. The cam 12 may, alternatively, be carried by the part 8, or by posts movable on the frame 4.
Patent GB-144499-A (GB)
Title: Force feed lubricator for automobiles
IPC: F16N13/08
Filed: 1919-07-14
Abstract: 144,499. Smith, F. W. July 14, 1919. Indicating in connexion with.-In a force-feed lubricating pump of the type described in Specification 121,113, [Class 102 (i), Pumps &c.], the delivery pipe 22 contains a small spring-pressed piston with a projecting tail-rod 25. By pressing the rod inwards, the pulsations of the oil if being pumped will be felt.
Patent GB-622659-A (GB)
Title: Improvements in holders for brushes or brooms
IPC: B25G3/12
Filed: 1947-10-25
Abstract: 622,659. Broom-handle fixings. READ, F. Oct. 25, 1947, No. 17829/46. [Class 61(i)[ A broom handle 1 is secured to the head 2 by a holder 4 formed of a sleeve the lower end of which is spun out to form a continuous flange 5 substantially at right angles to the sleeve and curved to the shape of the broom head, holes 6, 7 being provided for securing nails 6, 7.
Patent GB-327340-A (GB)
Title: Improvements in automatically supplied drinking vessels for poultry and animals
IPC: A01K39/026
Filed: 1929-06-11
Abstract: 327,340. Steinweg, J. June 11, 1929. Drinking- appliances for animals.-A reservoir 4, adapted to rest on an annular support 2 pro. jecting from the middle of a drinking vessel 1, is provided in its base with a passage 6 in which a rod 9 carrying at each end a valve 10 can slide. A float 7, in a circular guide 8, rises and falls in accordance with the water in the vessel 1 and so actuates the valve to shut off or to supply water. The reservoir has a cover 3 and an air inlet 12.
Patent GB-263689-A (GB)
Title: Clips for suspending curtains & fabrics
IPC: A47H13/01
Filed: 1926-07-17
Abstract: 263,689. Rapp, A. July 17,1926. Curtains, suspending.-A clip for suspending curtains and fabrics is composed of a pair of hollow pressed U-shaped frames a, b, the limbs of which are pivotally connected at about their centres c by projections, on one frame being passed through holes in extensions on the other frame and bent over. The ends of the frames are formed as gripping jaws d closed by a spring g. One end only of each frame may be formed as a. jaw.
Patent GB-299690-A (GB)
Title: Improvements in or relating to combing machines
IPC: D01G19/04
Filed: 1928-06-21
Abstract: 299,690. Dobson, B. P., and Hartley, W. June 21, 1928. Combing-machines. - In a combing-machine provided with an aspirator fan a high speed electric motor 6 is arranged in alignment with the shaft 5 of the fan and is coupled to such shaft by a centrifugal coupling 8, 9. The main shaft 4 of the machine is driven from the fan shaft by a chain 13 passing over a sprocket 11 on the hub 10 of the coupling-element 9 and a sprocket 12 on the shaft 4. The sprocket 12 is mounted on a plate 14 on the shaft and can be exchanged. A tensioning sprocket 16 is adjustably mounted in a bracket 17. The motor switch 20 is connected to the usual stop-rod 26 through levers 24, 21 and link 22.
Patent GB-1485751-A (GB)
Title: Handles or knobs for water taps and other valves
IPC: F16K31/60
Filed: 1974-07-16
Abstract: 1485751 Valves TREVELYANS (BIRMINGHAM) Ltd 16 July 1974 [17 April 1973] 18330/73 Heading F2V A handle or knob for a tap or other valve, comprises a metal shell 1, Fig. 1, containing a plastics body 2 having a socket 5 formed to receive a square or other non-circular end of the valve operating spindle. Relative rotation between the shell and body is prevented by co-operation between a polygonal depending portion 9 of the shell and a complementary recess in the body, by a polygonal opening in the base of the shell receiving a correspondingly-shaped body or by forming the body with axial grooves for cooperation with the inner walls of depressions 13 in the shell. A screw 10 is provided for securing the knob to the operating spindle. Alternatively, the knob may be a friction fit over the spindle, in which case a hole in the base of portion 9 has snap-over co-operation with the head of a spigot (18), Fig. 4 (not shown), extending upwardly from the base of the recess in the body. In another arrangement, Fig. 3 (not shown), a resilient washer (17) is provided in the cavity defined by the portion 9 to snap-over a headed spigot (14) extending upwardly from the valve spindle. The shell may have a downwardlydepending skirt to conceal body flange 8.
Patent GB-516129-A (GB)
Title: Improvements in or relating to safety apparatus for retaining persons in the seats of aircraft or other vehicles
IPC: B64D25/06
Filed: 1938-06-21
Abstract: 516,129. Winches. MILLS EQUIPMENT CO., Ltd., and LETHERN, A. A. June 21, 1938, Nos. 18347, and 28638. [Class 78 (v)] [Also in Group VII] Apparatus for retaining persons in the seats of aircraft or other vehicles so as to enable the person to lean forward when necessary, comprises harness including side straps A, A', secured at their lower ends to 'the sides of the seat B, and releasably connected in front of the person to the front ends of two pairs of shoulder straps C, D, the rear ends of which are anchored to the back of the seat by a pair of flexible tension members C<1>, D', connected respectively to winding drums G<1>, J, which are adapted to be rotated simultaneously by operating a hand lever G<8>, and a clutch &c. operable by a lever H' being provided whereby the drum J can be disconnected from the drum G<1>. The clutch comprises gear wheels G<2>, J<1>, Fig. 2, capable of being brought into and out of engagement by operating the lever H'. The drum G<1> is mounted on a fixed axis G, and is rotated by a worm and worm wheel drive G<3>, G', acting in conjunction with the lever G<8>, while the drum J is mounted on a spindle H' which is supported in eccentric bearings, the lever H<7> acting to rock the spindle so as to move the wheels G<2>, J<1>, towards or away from one another to cause engagement or disengagement thereof. A spring J', Fig. 2, extends between the drum J and the spindle H, and tends to rotate the drum J in a direction to wind in the tension member D' secured thereto, and to rock the spindle H so as to bring the gear wheels G<2> J', into engagement. In operation, the gear wheels G<2>, J', can be disengaged by actuating the lever H<7> to allow adjustment of the relative lengths of the shoulder straps, and with the gear wheels G<2>, J<1>, re-engaged, the pairs of shoulder straps can be tightened or loosened simultaneously by operation of the handle G<@5>. If the person wishes to lean forward, the lever H' is operated to disengage the gear wheels G<2>, J', so as to permit the tension member D<1> to unwind from the drum J by pulling on the shoulder straps D. The straps D can then either be maintained in the slack condition by causing re-engagement of the gear wheels, or restored to their former condition by causing the tension member D<1> to be automatically rewound on the drum J. According to the first Provisional Specification, the winding, drums are mounted on the same axis, the clutch being modified accordingly.
Patent GB-314070-A (GB)
Title: Wave signalling system
IPC: H03J3/24
Filed: 1929-06-14
Abstract: 314,070. Hazeltine Corporation, (Assignees of MacDonald, W. A.). June 23, 1928, [Convention date]. Thermionic amplifiers.-In a highfrequency amplifier having a frame aerial input and conjoint control of the tuning condensers 5, 6, 7 the effective distributed capacity of the frame aerial is reduced to that of the intervalve tuning-circuits by connecting only a part of the turns across the input to the first valve, while connecting the tuning condenser across the whole of the frame aerial.