baber/WOPTO huggingface dataset:
Patent GB-1466938-A (GB)
Title: Magnetic recording and/or playback apparatus
IPC: G11B15/08
Filed: 1974-04-29
Abstract: 1466938 Controlling recording and/or playback apparatus PHILIPS ELECTRONIC & ASSOCIATED INDUSTRIES Ltd 29 April 1974 [3 May 1973] 18623/74 Heading G5R The operational mode of a magnetic recording and/or play-back apparatus is switched by a photo-electric device 20 responding to the absence of an opaque part of a magnetic record carrier 1, the device 20 having a photosensitive element 26 shielded from extraneous light and optically coupled to a limited area of a surface of a magnetic head 11, which surface is contacted by carrier 1, via a light guide 32 which is also shielded from extraneous light other than any such light incident on said limited area, at least part of the guide 32 being accommodated in the head 11. The light guide 32 may have an opaque sheath 37 with one end 33 of the guide in the working face 34 of a magnetic record and/or play-back head 11 and the guide extending into an opaque housing 27 enclosing the photosensitive element 26 which may be a photodiode, phototransistor or photoresistor. When a transparent part 2 of a magnetic tape 1 reaches the sensing end 33 of the light guide, the element 26 responds to light transmitted through the part 2 and along the guide from a source 25 and controls, over lines 21 to 24, tape reel drive motors 13, 14, capstan motor 15 and an electromagnetic actuator 19 for a pinch roller 18 to stop tape transport. In an alternative embodiment, Figs. 3, 4 (not shown), for use with a reelto-reel magnetic tape cassette (43) having transparent parts at each end of the tape, a reversible tape transport has tape reel drive motors (13), (14), a reversible capstan motor (49) simultaneously driving two capstans (17), (52) in the same direction as each other, and an electromagnetic device (19) for moving a plate (48) carrying pinch rollers (18), (54), erase heads (10), (47) and a record/play-back head (11). The erase head (47) houses the entire light guide (32) and the element (26) which on sensing a transparent tape part, by light transmitted therethrough from a lamp (25) mounted below the cassette, reverses the tape transport direction. Both erase heads may house respective light guides and photosensitive elements. Instead of stopping or reversing the tape transport, the photo-electric device 20 may switch between record and playback. Instead of the transparent part(s) 2 extending across the entire tape width, each track may have a respective transparent part and a magnetic head may have several light guides leading to respective photosensitive elements.
Patent GB-1441394-A (GB)
Title: Strut
IPC: E04C3/02
Filed: 1973-04-18
Abstract: 1441394 Joist struts W VISICK & SONS Ltd 10 April 1974 [18 April 1973] 18723/73 Heading E1W A bracing strut 1 between wooden floor joists 4, 5 comprises a rigid element of e.g. metal or plastics formed at each end with teeth to penetrate the joist. The element may be of channel formation intermediate its ends.
Patent GB-594408-A (GB)
Title: Improvements in or relating to power transmission mechanism
IPC: F16H3/02
Filed: 1944-09-30
Abstract: 594,408. Variable-speed gearing. HOBBS, H. F. Sept. 30, 1944, No. 18756. [Class 80 (ii)] Variable-speed gearing comprises a driving shaft 10, at least one layshaft 50, two intermediate shafts 12, 13 between which power can bE distributed in at least two ratios, gears on the intermediate shafts 12, 13, and on a driven shaft 11, meshing with gears on the layshaft or layshafts, and a double dog clutch 56 movable in opposite directions to bring two powei paths into operation, a third power path being also provided which is made effective when the double dog clutch 56 is in a neutral position. As shown, for a gearing providing seven forward speed. ratios, the shafts 12, 13, have bevel gears 23, 24, engaging planets carried by a spider 22. Clutch plates 26, 27, on the spider 22 and gear 23, respectively, are clutchable to a housing 34 driven by the shaft 10. Gears 15, 17, fixed on the shafts 13, 12, engage gears 16, 18, fixed on layshafts 50, 53, which also have gears 20, 25, engaging loose and fixed gears 19, 21, on the driven shaft 11. Layshaft 53 is loose on layshaft 50 but can be clutched thereto by a dog clutch 68 actuated by a yoke 74. The double dog clutch 56 is splined to the driven shaft 11 and in its extreme positions clutches to either shaft 12 or gear 19. The clutch 56 is moved by a yoke 64 which is linked to the yoke 74 so that the clutch 68 can be engaged only when the member 56 is in the neutral position shown. The clutches 26, 27, are actuated, when desired, by fluid pressure generated by a pump 45. The dog clutches have baulking rings 65, 66, 71, to ensure synchronous engagement. The gearing has four separate power paths of different ratios through which power can be transmitted separately or through pairs of paths simultaneously viz:-(a) 12, 56, 11; (b) 12, 17, 18, 53, 20, 19, 56, 11; (c) 13, 15, 16, 50, 25, 21, 11; and (d) 12, 17, 18, 68, 50, 25, 21, 11. The seven forward ratios are (1) Through path (b) clutches 27 and 19-56 being engaged and 26 disengaged; (2) through paths (b) and (c) simultaneously, clutches 26 and 19-56 being engaged and 27 disengaged; (3) through path (d) with clutches 27 and 68 engaged and 26, 19-56 disengaged; (4) through paths (c) and (d) simultaneously with clutches 26, 68 engaged and 27, 19-56 disengaged; (5) direct drive through path (a) clutches 27, 12-56 being engaged and 26 disengaged; (6) overdrive through paths (a) and (c) simultaneously with clutches 26 and 12-56 engaged; and 27 disengaged, and (7) overdrive through path (c) clutches 26, 27, being both engaged and all dog clutches disengaged. The layshafts instead of being concentric may be offset from each other or arranged end to end. In a modification which is also described in Specification 590,607 means are provided for a reverse speed. Specifications 549,988 and 560,379 also are referred to.
Patent GB-891686-A (GB)
Title: Well plungers
IPC: F04B47/12
Filed: 1960-05-27
Abstract: 891,686. Well swabs. CAMCO Inc. May 27, 1960 [Oct. 12, 1959], No. 18770/60. Class 102(1). A well tubing bucket swab has sealing and scraping members 2, 4, each comprising four axial collars 26, 27, 28, 29, laterally, movably mounted on the tubular plunger, outwardly biased by a spring 31, Fig. 3 (not shown), andhaving keys positioning them in angularly spaced relationship to one another to form a circumferen tial aggregate of at least 360 degrees. An intermediate sealing member 3 comprises a sleeve 23 with grooves 25 to cause turbulence in, and thereby resist the passage of, the fluid. An axial rod 20 is depressed to unseat a passage control valve 15, Fig. 4 (not shown) and admit fluid to the barrel passage 10 of the plunger, the valve being closed at the lower limit of plunger travel by an abutment 22. Spring loaded ball detents are located within a nose closure band 16 to retain the stem of the valve 15 in the open and closed positions. In a modification, Figs. 6, 7 (not shown), each set of collars is replaced by a pair of sleeves, each comprising an annular ring and depending leg portions which provide guide bearing surfaces for a pair of shoe segments biased outwardly by springs. The ball detents are replaced by one such member 56, Fig. 6 (not shown), located in the axial rod and biased outwardly by a spring to engage respective grooves in the swab head.
Patent GB-698371-A (GB)
Title: Apparatus for producing high-frequency oscillations in liquids
IPC: G10K7/02
Filed: 1951-08-09
Abstract: 698,371. Agitating devices. NEKOLNY, K. F. R., and KONIG, F. Aug. 9,1951 [Aug. 10. 1950], No. 18796/51. Addition to 697,860. Class 86 Apparatus for producing high frequency oscillations in liquids includes a container for the liquid having therein a flowproducing device for producing a flow of a portion of the liquid, a frequency-producing device adapted intermittently to interrupt the flow and divide it into a multiplicity of liquid impulses at high frequency and a waveform-controlling device for determining the waveform of the impulses prior to their impingement on to the mass of the liquid, the frequency-producing device being formed as a body of revolution so as to transmit the impulses radially therefrom, and the waveform-controlling device being shaped to conform to the contour of the frequency-producing device. In one embodiment the flow-producing device is in the form of a plurality of blades 3, Fig. 1, disposed about a central space and rotatable about a central axis 6 and the frequency-producing device is in the form of a hollow perforated cylinder 4 surrounding the blades. Exterior to the frequencyproducing device is a waveform-controlling device, not shown. In the arrangement of Fig. 5 there is shown in cross-section a flow producing device rotatable about an axis 20, and having a cylindrical distributing device 19 with apertures 21 through which the accelerated liquid streams are directed. A cylinder 22 exteriorly of the cylinder 19 has frequency-producing apertures 23 and an outer cylinder 24 has waveform-controlling apertures 25. The cylinder 24 can be arranged for periodical vertical movement causing a regular variation of the effective aperture size, thereby continuously varying the waveform of the oscillations. Several other arrangements are described which include means for generating alternate pressures and suctions in the mass of liquid, Fig. 7 (not shown), and means for directing the impulses to a common focus, Fig. 8 (not shown).
Patent GB-1248018-A (GB)
Title: Potentiometer
Inventor: KLUG ROBERT FRANCIS
IPC: H01C10/42
Filed: 1968-09-16
Abstract: 1,248,018. Potentiometers. DALE ELECTRONICS Inc. 16 Sept., 1968, No. 18844/70. Divided out of 1,236,269. Heading H1S. In a miniature potentiometer in which a pick-up contact 116, Fig. 4, is moved by a lead screw 26 over a resistance element 28, the element is carried by curved portions 134, Fig. 5, of contacts 34, 36, the portions 134 being joined by inclined portions 132 to parts 136 and 94 which respectively contact the top 20 and pass through the base of the housing. The contact may have spring arms 116, 118, Fig. 6, which contact respectively a collector strip 42 and the resistance element 28. The contact holds the lead screw by arms 124 which spring apart if the screw is turned when the contact reaches the end of its travel.
Patent GB-824807-A (GB)
Title: Improvements in or relating to compression-ignition engines
IPC: F02B19/08
Filed: 1957-06-14
Abstract: 824,807. Combustion chambers. MASCHINENFABRIK AUGSBURG - NURNMERG A.G. June 14, 1957 [July 18, 1956], No. 18858/57. Class 7(3) A frusto-conical swirl-type combustion chamber 2 is provided with a tangentially arranged inlet duct 5 the inner end 6 of which is oblong and extends over approximately the whole length of the generating line of the cone, the fuel infection nozzle 3 being coaxial with the chamber 2 and provided with injection orifices spraying fuel at a shallow angle on to the narrower end of the chamber 2. Additional injection orifices may spray on to the wider parts of the chamber.
Patent GB-572370-A (GB)
Title: Improvements relating to electric accumulators
IPC: H01M50/474
Filed: 1943-11-12
Abstract: 572,370. Lead accumulators. CHLORIDE ELECTRICAL STORAGE CO., Ltd., and GRAY, R. Nov. 12, 1943, No. 18889. [Class 53] The positive plates f of a lead accumulator are suspended from the tops of the negative plates a by insulating rods i, j, which rest on bearing surfaces formed at b in recesses in the terminal lugs of the negative plates and ir apertures d in other lugs in the negative plates, respectively, the negative plates resting on bars m on the base of the container with the outer plates secure( to the bars to tie the bottoms of the plates. The intermediate negative plates have notched lugs k locating the plates on the bars m, and the bars are cushioned by rubber pads n seated in grooves in the base. The holes in the plates through which the rods i, j, pass are made large enough to permit sideways growth of the positive plates.
Patent GB-658928-A (GB)
Title: An air-lock system for a continuously operated vertical cement kiln
IPC: F27B1/21
Filed: 1949-07-18
Abstract: 658,928. Discharging shaft furnaces. SOMOGYI, F. P. July 18, 1949, No. 18915. [Class 51(ii)] ] An air-lock discharge device for shaft furnaces of the kind comprising an inclined shoot 1 fitted with alternately-operated flaps 7, 12 is provided, in front of each flap, with a segmental gate 3, 9 pivoted in the shoot and adapted to swing into and out of a pocket 4, 14 therein, each gate being operated to arrest the flow of material before its respective flap closes and subsequently to swing back into its pocket when the flap is again open to allow flow to be resumed. When the gates are in the closed position their leading edges 3a, 9a abut against the undersides of depending trap-plates 5, 10 hinged at 6, 11. The flaps and gates are fitted with counterweights 15-18 and are operted through crank levers 20- 23 and links 24-27 by camshaped levers 28-31, the latter being mounted on a common shaft 32 and actuated by rollers 34 mounted between discs 35 on a driven shaft 33.
Patent GB-293051-A (GB)
Title: Improvements in and relating to time controlled mechanisms for actuating valves and electric switches
IPC: G04F1/00
Filed: 1928-06-30
Abstract: 293,051. Mourey, P. June 30, 1927, [Convention date]. No Patent granted (Sealing fee not paid). Dashpots, applications of. - A cupleather 2 rigid with a rod 3 and weight 6, moves slowly down a cylinder 1 as air leaks in through a needle valve 4, until it reaches an enlarged part 1<1>, whereupon the weight drops suddenly. When the weight is raised by hand by chain 11 a projection 14 on the weight operates the arm 17 of the valve or switch 13 and when the weight falls a second projection 15 restores the arm 17. 8 is a guide rod rigid with the weight. A solenoid winding may be arranged around the piston so that it may be lifted electdically.
Patent GB-1060868-A (GB)
Title: Circuit arrangements for the measurement of admittances,impedances or transfer functions of networks or devices
Inventor: BUHN UWE
IPC: G01R27/32
Filed: 1964-05-07
Abstract: 1,060,868. Amplitude modulating circuits. FUNKWERK DRESDEN VEB. May 7, 1964, No. 19059/64. Heading H3R. [Also in Division G1] An amplitude modulator comprises coaxial lines 201 and 202 each coupled by slots 206 to a loop 203 which is rotated by means of a winding 205. If lines 201 and 202 are parallel, the voltage induced by line 201 in line 202 is proportional to cos<SP>2</SP>#, where 0 is the angle of the loop 203, whereas if the lines are orthogonal the voltage is proportional to sin 20. The loop 203 consists of permanent magnet material, the surface of which is silver coated, and acts as the rotor of a synchronous motor.
Patent GB-784352-A (GB)
Title: Multi-cylinder internal combustion engines
IPC: F02B27/00
Filed: 1955-07-01
Abstract: 784,352. Inlet or exhaust manifolds. AKT.-GES. FUR UNTERNEHMUNGER DER EISEN - UND STAHLINDUSTRIE. July 1, 1955 July 3, 1954], No. 19131/55. Class 7(2) In a multi-cylinder engine 'having an inlet and/or an exhaust manifold 18, Fig. 1, connected to the cylinder by individual pipes 17, the distance between the junctions with the manifold of at least two pipes 17 differ from the distance between the centre lines of the associated cylinders by more than the minimum distance between the centre lines of two adjoining cylinders. In a modification, the pipes from adjacent cylinders 1, 2 and 6, 7 cross over each other before entering the manifold as shown, the remaining pipes being straight. In another modification, the engine has six cylinders and the pipes from cylinders 5, 6 cross over each other whilst those from cylinders 3; 4, are straight. In a further modification, the pipes from cylinders 1, 3 cross over each other and are additionally crossed by a straight pipe from cylinder 2. In a final modification, the pipes from cylinders 1, 2 and 4, 5, Fig. 5, cross over each other whilst cylinders 1, 3 and 4, 6 have common junctions with the manifold; more than two pipes may merge into a common junction with the manifold.
Patent GB-754785-A (GB)
Title: Means for preventing thread entanglements in pneumatic devices for holding the ends of threads in automatic winding machines
IPC: B65H67/08
Filed: 1954-06-30
Abstract: 754,785. Winding yarn. REINERS, W. June 30, 1954 [Aug. 14, 1953], No. 19240/54. Class 120 (2). Apparatus for holding ready the ends of the threads from a magazine 7 of wound bobbins 8, for use in automatic winding machines, includes pneumatic means, e.g. suction nozzles 9, 9a, for creating an air draft to hold the ends of the threads from groups of bobbins 8 in such nozzles &c., and means for severing the threads, e.g. shears (not shown) adjacent the nozzles, so that after each bobbin has been fed to the winding-off position 1, and the end has been gripped and taken to the knotter for attachment to the thread-end in the package 6, the threads are operated and the ends in the nozzles carried away. In the modification of Fig. 2, the thread ends held in a single nozzle 12 are severed at each supply bobbin-change by means of a linkage 14, 15 attached to shears operating in the nozzle itself.
Patent GB-699296-A (GB)
Title: Improvements in or relating to scales for the automatic weighing of liquids
Inventor: MURRAY CECIL WALTER
IPC: G01G13/00
Filed: 1950-08-02
Abstract: 699,296. Automatic-feed weighers. FLETCHER & CO., Ltd.. G. June 15, 1951 [Aug. 2, 1950]. No. 19258/50. Class 143. [Also in Group XXXII] In an automatic weighing scale for liquids such as sugar liquors in which the opening and closing of a supply valve 18 to the weigh tank 11 and a discharge valve 19 therefrom are effected by the up and down movement of the weigh tank, supported at one end of a counterweighted main weigh beam 16, the valves 18, 19 are of the lift type and caused to move through a greater vertical distance than the rise or drop of the weigh tank by linkage as shown fulcrummed about fixed points 25, 33 in the scale framework and connected to the weigh tank and valves. The linkage may have slotted couplings to permit the valves to seat properly on their bases. The supply valve 18 is located at the base of a supply tank 10 mounted on the framework above the weigh tank 11 and has a surrounding screen 21 with serrated lower edge acting as a dribble valve operated through parallel motion linkage from a float 20 when the weigh tank is nearly full. The weigh beam 16 is fulcrummed about knife edges 69 supported on spaced seatings and is operatively connected to a counterbalanced buffer lever 58 connected to a double acting buffer piston 55 sliding in a hydraulic buffer 38. The buffer lever 58 is pivoted about a fulcrum pin with axis colinear with and intermediately located between the main beam knife edges 69 and is connected to the main beam 16 by an end extension 582 having roller abutments 64 embracing opposite sides of the weigh beam 16 so that the latter can move without buffer restrain over part of its traverse. The total traverse is limited by adjustable screw-threaded stops 71a locked in position by set screws engaging axially extending V-notches in the heads of the stops. The double-acting buffer comprises a series of ports connected to an outlet pipe 44 through a control chamber having a screw adjustable baffle plate for regulating the outflow of liquid from the ports, the liquid returning to the opposite' side of the piston through. one or other of the one-way non-return valves 48. A wiper shaft 76 operated from the buffer lever 58 by a link 74 and crank 75 automatically acts through linkage to register the number of weighings, to empty a sample of the supply liquid into a sampling device container and to deliver a fixed quantity of reagent, e.g. milk of lime, into a receiver tank 12 for the liquid discharged from the weigher. The discharged liquid and reagent may be fed to a funnel 77 having an outlet duct 77a fitted with baffles 77b arranged in a succession of helices of successively opposite hand to mix the liquids, which finally impinge on a liquid deflecting and spreading cone 80 on the base of the receiving tank. Specification 247,158, [Class 143], is referred to.
Patent GB-837778-A (GB)
Title: Photographic method and apparatus
IPC: G03B27/72
Filed: 1957-06-19
Abstract: 837,778. Photo-electric printing control. LOGETRONICS Inc. June 19, 1957 [June 19, 1956], No. 19299/57. Class 40 (3). In a photographic method in which a variable light beam scans a subject and forms a real image on a photo-sensitive surface from which the light is directed to light-sensing means, the light beam is modified as a function of the intensity variations sensed by said means to maintain the average light intensity constant and is further modified as a function of the integrated value of light received. A light beam from CRT 10 is directed through lens 26 on to a film negative 28, which it scans under the control of horizontal and vertical sweep generators 18, 22. Light which passes through the photo-sensitive surface 30 is constrained by a light trap 34 and energizes a photo-multiplier tube 32. Electrical feedback through amplifier 42 to CRT grid 14 so modulates the beam intensity that at any instant the average light intensity over the finite area of the light spot is the same as at all other instants, i.e. the average light intensity on all portions of the photo-sensitive surface is substantially constant. Thus the contrast range of any one negative is reduced to that acceptable by the printing paper. To maintain similar levels of light intensity and therefore uniform exposure, with negatives of varying density an integral function of light intensity is used to further modify the light beam. This is derived from a separate photo-multiplier tube 60 which has an adjusting sleeve so that any particular portion of the surface 30 may be used to influence this control factor. The output of tube 60 is applied to lightintegrating switch 50, to which is also fed the signal determining the desired level of exposure from device 54. In a simpler embodiment (Fig. 1, not shown) the integral control factor is derived directly from photo-multiplier tube 32.
Patent GB-223665-A (GB)
Title: Improvements in and relating to colliery and other winding gear
IPC: B66D1/36
Filed: 1923-07-27
Abstract: 223,665. Lamb, E. le L., Hammick, H. A., and Metropolitan-Vickers Electrical Co., Ltd. July 27, 1923. Reels.-The cylindrical portion 2 of a cylindroconical winding drum is fitted with an adjustable collar 8 which is set to regulate the amount of dead rope that is received in this part of the drum before winding commences on the conical portion. The collar is re-set, when adjusting the drum for winding at a different level, so that the conical part of the drum will always be reached at the same distance from the commencement of the wind. In bi-cylindro-conical drums made up of two parts, clutched together for level-adjusting purposes, each cylindrical part is fitted with an adjustable collar. In the illustrated form the split collar and drum are formed with coacting helical surfaces 5, the collar being moved axially by rotating the drum, and fixed in its adjusted position by clamping screws. Modified constructions include smooth bearing surfaces between the drum and collar and axial adjustment of the collar by hand-operated screw- and-nut mechanism. The volute path 10, which returns the rope to re-wind on itself, may be formed on a separate flange angularly adjustable in respect to the collar, so that the correct laying of the rope during the return run can be secured.