baber/WOPTO huggingface dataset:
Patent GB-954575-A (GB)
Title: Video signal switching apparatus
IPC: H04N5/268
Filed: 1961-12-15
Abstract: 954,575. Transistor switching circuits. FERNSEH G.m.b.H. Dec. 15, 1961 [Dec. 17, 1960], No. 44993/61. Heading H3T. In video-signal switching apparatus comprising a plurality of control transistors having respective individual input circuits and a common output terminal together with means for applying individual video signals to the input circuits and means for selectively rendering any one control transistor conductive and for subsequently rendering any other control transistor conductive in place of said one control transistor so that a video signal initially present at said output terminal is replaced by another, a further transistor switch is provided which during the change-over from conduction in one control transistor to conduction in another, itself becomes conductive to connect the output terminal to a source of constant direct potential and so suppress transients tending to occur during said change-over period. In a first embodiment, Fig. 2, connection of any one switch 12 to a negative potential at terminal 14 causes the corresponding switching transistor 10 to become conductive and hence the corresponding control transistor 3 which is then able to pass the video signal applied at the corresponding input terminal 1 to a common output point 17. At the same time a negative-potential is applied through a corresponding diode 21 to the base of a NPN transistor 18 which consequently is maintained switched off. When a different one of the switches 12 is actuated, the switch 12 already operated is first released so switching off the corresponding transistors 10 and 3 and at the same time removing the bias from transistor 18 which is consequently able to conduct and short-circuit the output point 17 to eliminate transients due to the switching. A second switch 12 then makes contact with the negative potential at terminal 14 so rendering corresponding transistors 10 and 3 conductive and switching transistor 18 off. Owing to saturation in transistors 10 and 18 transistor 18 switches on before the first transistor 10 switches off and off after the second transistor 10 switches on, hence ensuring that the output is short-circuited for the whole period of non-conduction in the control transistors 3. In a second embodiment, Fig. 3 (not shown), each of the control transistors 3 is provided with a respective individual collector load instead of the common load 4 and the outputs therefrom are connected to the common output terminal 17 through respective diodes which are cut off when the corresponding transistors 3, 10 are non-conductive, thus helping to reduce cross-talk between the various input signals. The circuits described may be used in a cross-bar switching system, Fig. 4 (not shown), in which any one of a plurality of input signals on respective input bus-bars may be switched to any one of a plurality of output bus-bars.
Patent GB-1087614-A (GB)
Title: Improvements in or relating to secret radio and like transmitters and transmission systems
Inventor: KEALL OSWALD EDWARD
IPC: G01S13/28
Filed: 1963-11-14
Abstract: 1,087,614. Pulse radar; radio signalling. MARCONI CO. Ltd. May 19, 1964 [Nov. 14, 1963], No. 45104/63. Headings H4D and H4L. In a pulsed, frequency-modulated radar system, the transmission is rendered secret by means of superimposed random noise. A compression type Gaussian weighting filter at the receiver converts each long input pulse into a short duration pulse. The noise, having a random frequency distribution is attenuated at its peak valves by the filter and a high signal to noise ratio is produced. On the other hand, an unauthorized receiver receives the pulses together with the superimposed noise unattenuated.
Patent GB-1313317-A (GB)
Title: Building frame brackets
IPC: F16B3/00
Filed: 1970-09-22
Abstract: 1313317 Clamps; supporting beams A R TURNER 22 Sept 1970 [22 Sept 1969] 45113/ 70 Headings E2B and E1W A rolled steel joist A has other articles such as wooden beams or pipes secured to it by one or more brackets 1 which are notched at 6 to receive a flange of the joist and has other holes 4, 7 for fixing purposes. The bracket is folded up from metal sheet. A pair of these brackets may be used, as shown in Figs. 2 and 5, linked by a clamping bolt 8, and further bolts 10 secure the beams B. The bracket may be used with a perforated Strap E to secure a pipe D, Fig. 6, or with a hook 11 secured to a saddle 1B, which comprises only the lower half of the whole bracket 1B, to grip an angle iron A, Fig. 7.
Patent GB-1032990-A (GB)
Title: Tubular heat exchangers
Inventor: DOMENJOUD PCUL
IPC: F28F1/16
Filed: 1964-11-06
Abstract: 1,032,990. Heat exchange elements. COMMISSARIAT A L'ENERGIE ATOMIQUE. Nov. 6, 1964 [Nov. 19, 1963], No. 45316/64. Heading F4S. A heat exchanger element comprises a central tube 1 which is connected to an outer tube 2 by a first series of radial fins 3a, 3b, and has a second series of radial fins 4 which extend from the outer tube part way towards the inner tube. As shown, other fins 6 may extend inwardly from the inner tube in alignment with the fins 3a, 3b.
Patent GB-976333-A (GB)
Title: Document feeding device
IPC: B07C1/04
Filed: 1963-11-18
Abstract: 976,333. Feeding sheets. INTERNATIONAL BUSINESS MACHINES CORPORATION. Nov. 18, 1963 [Nov. 16, 1962], No. 45358/63. Heading B6B. Apparatus for feeding sheets, and for ensuring that only one sheet at a time is forwarded, comprises a pair of feeding rollers 11, 12 which pivot and forward the sheets between a pair of vertical guide walls 10a, 10b, and a pair of rollers 13, 14 which rotate in a direction opposed to that of the sheet feed, the axes of the two sets of rollers intersecting at a point T and their peripheries forming parts of imaginary cones with their apexes at T. Since the two feed rollers 11, 12 are at a greater distance from the point T than their counter-rollers 13, 14, they exert a greater frictional force on the sheets, whereby a single sheet will be forwarded and any second sheet adhering thereto will be returned by the rollers 13, 14. The sheets are stacked on edge in a hopper 1 having a back wall 3, and a sloping bottom wall 2 which causes the stack to slide towards the back wall, and they are separated by a pair of rollers 5, 6 which protrude through slots in the wall 3. The axis of the rollers 5, 6 also intersects at the point T, and their peripheries form parts of an imaginary cone with its apex at T. A roller 7 driven by a belt 9 drives the rollers 5, 6 and 11, 12 by friction, and the rollers 13, 14 are driven by a belt and pulley system 17, 18, 19. The shaft 16 of the rollers 13, 14 is mounted in an arm 20 pivoted at 21, and is urged resiliently towards the shaft 15 of the feed rollers 11, 12. In operation, the separator rollers 5, 6 and the feed rollers 11, 12 cause each sheet to be pivoted about the point T as it is forwarded, and further feed rollers cause further pivoting such that the top edge of a sheet when it is in the hopper 1 finally becomes the bottom edge. Fig. 3a shows how a sheet at position A in the hopper 1 is gradually pivoted through positions B ... H, where it is finally grasped between a pair of conveyer belts 106, 107 and it also shows the shape of the base wall 105 which assists the pivoting operation. The sheet pivoting is assisted by four driven feed rollers 111 which co-operate with castor rollers 101 ... 104. Each castor roller, such as 101, Fig. 1, is carried in a bracket 109 which is pivotable about the axis of a spindle 110, and the bracket is urged by a spring 112 to move the roller into contact with the feed roller 111. A second spring 113 tends to pivot the bracket 109 about the axis of the spindle 110, so that the axis 108 of the roller 101 is moved out of parallelism with the axis of the roller 111, and causes the sheet to be pivoted. The system of rollers 111 and 101 to 104 can be replaced by conveyer belts.
Patent GB-454669-A (GB)
Abstract: 454,669. Knitting-pins. MORFEY, C., 27, Noble Street, Gresham Street, London.- (Canfield Rubber Co. ; Railroad Avenue, Bridgeport, Connecticut, U.S.A.) May 21, 1935, No. 14824. [Class 74 (ii)] A point protector for hand knitting- needles consists of a block of rubber or like composition having in one end pairs of holes of varying diameter in which the needle points may be inserted and frictionally held, the holes of each pair being of the same diameter. A block 1 of circular crosssection has preferably blind ended holes 2, 3, extending inwards from one face 1<b>, and, if desired, a further hole 4 or holes in the other face 1<a>, which face may be flat or rounded. The holes may be cylindrical or taper towards the blind ends and may be parallel to, or converge on, one another. In the case of a flexible pin having two points, one point may be inserted in a hole 2 or 3, and the other point in a hole 4 of the same protector. The holes 2 are smaller than the holes 3, and between them, practically all sizes of needle can be accommodated by stretching the rubber if necessary.
Patent GB-1125885-A (GB)
Title: Machine for the manufacture of cylindrical and tapered spiral seam tubes
IPC: B21C37/18
Filed: 1965-10-27
Abstract: 1,125,885. Making helically seamed tubing; coiling. L. KEHNE. 27 Oct., 1965 [31 Oct., 1964], No. 45509/65. Headings B3A and B3E. Apparatus for coiling strip helically to form tubing comprises three sets of rollers each set mounted on a common support, the support for the lower (outer) inlet set being fixed, that for the upper (inner) inlet set being vertically movable to accommodate strip of different thicknesses, and that for the rear set being adjustable both vertically and horizontally, the rear set also being angularly adjustable. Strip passes between an upper group 1 of rollers 4 and a lower group 2 and is then coiled helically to form tubing by a third group 3. Each roller 4 of a group rotates on a bush angularly adjustable on a ball shaped member secured on a shaft common to the rollers of that group. The shaft for the group 2 is carried by fixed columns 10a,10b and that for group 1 is vertically adjustable in columns 5a, 5b, which columns may also be displaced horizontally, in a direction perpendicular to the axis of the tubing, by a motor 8 driving a spindle acting on a plate 6 supporting the columns. The bearing in the column 5b for the shaft is loaded by an hydraulic cylinder. The shaft for the group 3 of rollers 4 is vertically adjustable in columns 13a, 13b, which are in turn adjustable horizontally to and from the groups 1, 2. The support for the columns 13a, 13b is also adjustable parallel to the tubing axis. The strip is fed by known means mounted on a pivoted table (25), Fig. 6 (not shown), which is normally stationary but may be pivoted slightly, to compensate for irregularities in the strip, under control of a probe engaging the strip edge. To produce tapered tubing the shaft of the group 3 is pivotably mounted in the columns 13a 13b and is adjusted angularly. The table 25 is continuously moved to vary the strip angle and the group 3 is moved away from the tube axis in accordance with increasing tube diameter under control of the pivoting movement of the table 25.  The helical seam is welded by submerged arc welding, protective gas welding, high frequency welding or resistance welding. The strip may be coiled downwardly.
Patent GB-955618-A (GB)
Title: Improvements in and relating to sealing thermoplastic material
IPC: B29C65/30
Filed: 1961-12-20
Abstract: 955,618. Seaming non-metallic sheet material. DU PONT OF CANADA Ltd. Dec. 20, 1961 [May 27, 1961], No. 45629/61. Heading B5K. A process for sealing thermoplastic materials comprises applying heat to the materials in the region thereof to be sealed so as to form a molten pool and moving the material on each side of the seal towards this molten pool to reinforce the seal. In one embodiment, Fig. 3, thermoplastic films 1 are conveyed by bands 4, woven, knitted or non-woven of fibres of nylon, polytetrafluoroethylene, glass or cotton, to heated jaws 2 which close to flatten spring compression bands 3. As the jaws 2 open the bands 3 return to the shape shown so that unmolten film at the edge of the seal is forced into the liquid pool thereof, the molten material sticking to the bands 4 which can be stripped off easily after the seal has solidified. In modifications, heating bands 7 may be situated outside, Fig. 4, or inside, Fig. 5 (not shown), the bands 3 so that when the non- heated jaws 2 are closed and a current impulse is passed through the bands 7 the temperature thereof is raised and the films sealed. When the bands 7 are located inside the bands 3 a covering of polytetrafluorethylene impregnated glass cloth is applied thereto. In an alternative embodiment, Fig. 6, to form a continuous seal, continuously heated jaws 5 are kept pressed together and the bands 3, 4 move continuously therebetween, the bands 3 being flattened between the jaws 5 but returning to their curved shape after leaving the jaws 5. In a further embodiment, Fig. 9, continuously heated bands 8 and the bands 3 pass around driven and idler pulleys 9 and 10 respectively whilst the bands 4 pass around driven and idler pulleys 11 and 12 respectively. In a still further embodiment, Fig. 11, the bands 3, 8 are wrapped around rotating wheels 14 and, on sealing, are flattened owing to the resilience of a silicone rubber layer 15, the bands 3 resuming their original shape at the exit side of the wheels to compress the molten seal. The bands 4 may be omitted in which case the bands 3 are covered with polytetrafluoroethylene, glass fibres or nylon to prevent adhesion of the films thereto. The bands 3 have slotted edges and examples are shown in the Specification. Examples of thermoplastic materials sealed by this method are given.
Patent GB-1426766-A (GB)
Title: Analogue to digital converters
IPC: H03M1/00
Filed: 1973-09-29
Abstract: 1426766 Analogue-to-digital conversion SOLARTRON ELECTRONIC GROUP Ltd 23 Sept 1974 [29 Sept 1973] 45648/73 Heading H3H In an analogue-to-digital converter of the type in which the analogue input V in  is compared, 18, with a ramp voltage from an integrator 32 and clock pulses are counted, 62, for the time taken for the ramp to reach V in , coarse (i.e. steep) and fine ramps are used, changeover occurring at the next clock pulse after comparator 18 detects equality between the coarse ramp and the signal at 16 and the clock pulses counted during the fine ramp are given a correspondingly reduced weight relative to those counted during the coarse ramp. A conversion cycle begins with zero drift compensation, F.E.T.s S3, S6, S7 conducting to form a closed loop including comparator 18 and integrator 32, C2 charging to bring 28 to earth potential, and BCD counter 62 counting clock pulses from 48 applied via gate 56 to its 3rd decade. When counter 62 fills, it is reset to 000000 and F.E.T.s S3, S6, S7 are made non- conducting, S1, S2, S4 conducting thereby subtracting an offset voltage from V in  (by drawing current from 19 through R1) and beginning the coarse ramp, reference 38 connected to the integrator 32 via R4, and clock pulses fed to 3rd decade of counter 62. When comparator 18 senses equality, AND gate 44 is primed so that on occurrence of the next clock pulse F.E.T.s S2, S4 are made non-conducting to remove the offset voltage and terminate the coarse ramp and F.E.T. S5 is made conducting to begin the fine ramp, reference 38 connected to the integrator 32 via R5 (# 100 R4), and clock pulses are fed via gate 54 to the 1st decade of counter 62 thereby being counted with 1/100th the weight given to the coarse ramp pulses. When comparator 18 again senses equality, the counter 62 is read out and displayed. Modifications.-(i) For V in  less than the offset voltage a second, permanent, offset voltage is added to V in . (ii) No offset voltage used, coarse ramp therefore overshoots, polarity of fine ramp is reversed, the fine clock pulses being subtracted. (iii) Separate coarse and fine counters, outputs combined.
Patent GB-1428694-A (GB)
Title: Deaerating oil tank
IPC: F16N39/00
Filed: 1973-10-01
Abstract: 1428694 Oil deaerator UNITED AIRCRAFT CORP 1 Oct 1973 [2 Oct 1972] 45729/ 73 Heading B1M A tank in which oil for a turbojet is deaerated comprises a container 12 which is curved to fit against the engine. Engine oil is directed into the container via tubes 42 and 44 and rises in perforated funnel 50 and out through openings 52 to flow into the container funnel section 70 for flow through outlet line 24 to the source of use. The remainder of the oil rising in the funnel allows the air to escape to the top of the container. When oil is low in the container it may be fed in directly through the opening normally closed by cover 18 and the open pipe 16 indicates the height of the oil when the engine is at rest. The surplus oil may also be drained through pipe 22.
Patent GB-1416137-A (GB)
Title: Methods of and apparatus for measuring inductance
IPC: G01R27/26
Filed: 1971-10-01
Abstract: 1416137 Measuring inductance G M ETTINGER 19 Dec 1972 [1 Oct 1971] 45758/71 Heading G1U In a method of measuring an unknown inductance Lx, a voltage limiter Dl, D2 is connected across the inductance to limit the voltage across it to a value E, a pulse of maximum current I from a generator 1 is passed through the inductance, and the duration Tp of the voltage pulse appearing across the inductance is measured. For an inductance the voltage V across it is given by V = L di/dt. If V is held constant at a value E, and if the maximum value of the current i is I, then once the current through the inductance has reached the value I, di/dt becomes zero and the voltage across the inductance drops to zero. Thus the duration Tp of the voltage pulse appearing across the inductance is given by Tp = LI/E and is linearly proportional to the value L of the inductance. The duration Tp is determined by amplifying 2 the voltage across the inductance and gating Ti a constant current to a capacitor C for its duration. The maximum voltage appearing across the capacitor C is then extracted by a peak detector D3, Cl and displayed, via an appropriate D.C. amplifier, on a meter M. An alternative output 5, 6 is available direct from the gate T 1 .
Patent GB-1030450-A (GB)
Title: Improvements in digital encoders
Inventor: SEARLE ERIC HENRY
IPC: H03M1/00
Filed: 1963-11-20
Abstract: 1,030,450. Shaft displacement digitizers. BRITISH AIRCRAFT CORPORATION (OPERATING) Ltd. Feb. 22, 1965 [Nov. 20, 1963], No. 45824/63. Heading G4H. The tororoidal ferrite core of a transformer having its primary winding supplied with highfrequency A.C. is situated in an air gap in a magnetic circuit, and a toothed disc fixed to the input shaft is so arranged that each tooth, as it passes through the air gap, diverts flux from the core and thereby modulates the output from the transformer secondary winding. The input and output of the transformer are connected through respective further transformers. Permanent magnets on the disc or another disc geared thereto may provide datum pulses from co-operating transformers. A second pick-off transformer may provide phase-displaced signals for direction indication. Torque may be measured by means of two discs axially spaced on the shaft.
Patent GB-1186133-A (GB)
Title: Brake, Lock and Release Mechanism for Automatic Rewind Reels.
IPC: B65H75/44
Filed: 1968-09-26
Abstract: 1,186,133. Braking drums. SYBRON CORP. 26 Sept., 1968 [13 Nov., 1967], No. 45840/68. Heading B8M. [Also in Division F2] A rotatable reel for storing a cord or hose having means for applying a rewind torque is provided with an internal shoe drum brake mechanism (see Division F2) for preventing rotation of the reel by the rewind torque, which brake is alternately actuated and released by pulling out and releasing the cord or hose on the reel. The brake mechanism is housed in a recess in the reel hub covered by a non-rotatable cover plate fixed to the shaft of the reel.
Patent GB-1446864-A (GB)
Title: Blade for earth moving equipment
IPC: E02F9/28
Filed: 1972-10-05
Abstract: 1446864 Digging blades for earth-working equipment DEFENCE SECRETARY OF STATE FOR 7 Jan 1974 [5 Oct 1972] 45889/72 Heading E1F A digger blade 1 for earth-working equipment has one or more earth-engaging cutters 4 so extending forward of the lower edge 7 of the blade that each cutter can be caused to oscillate about an axis that is substantially parallel to and close to said edge. When several cutters are provided they have an abutting relationship and are caused to oscillate in a phased relationship to one another. Preferably each cutter is provided with a rearward extension on which an hydraulically powered ram or a rotating cam 6 can act to cause the cutter to pivot about the axis, which is defined by stub axles mounted on a frame integral with the blade or by a resilient cushion bonded to the cutter and the frame.
Patent GB-1131236-A (GB)
Title: Improvements in or relating to rear vision mirrors
IPC: B60R1/08
Filed: 1965-10-29
Abstract: 1,131,236. Rear vision mirrors for vehicles. E. CORAGLIOTTO. 29 Oct., 1965 [29 Oct., 1964], No. 45899/65. Heading B7J. [Also in Division G1] A rear vision mirror for motor vehicles comprises a mirror element 7 in a frame 8 pivoted at 9 in a plastics casing 5 fixed inside the vehicle windscreen, two magnetic armatures 8a, 8b associated with two electromagnets 14, 15 and two photoconducting cells 16, 17 behind transparent windows 7a, 5b in the mirror element 7 and in the casing 5 respectively, and controlling by means of transistors 18, 19, 20 the current supply to the electromagnets 14, 15 so as to hold the mirror element deflected in the absence of daylight only as long as a beam from the headlights of a vehicle behind the mirror impinges on it and to hold the mirror element in its normal undeflected position during daylight. The transistors 18, 19, 20 shown are of PNP type and hence point A is connected to the negative pole of the vehicle battery; if of NPN type, to the positive pole. During daylight, the cell 17 biases the base of the transistor 18 negative so that it conducts and biases the base of the transistor 19 positive whereby no current flows through the electromagnet 15 and the base of transistor 20 is biased negative so that current flows through the electromagnet 14. In the absence of daylight, the cell 17 and the transistor 18 cease to conduct, and the cell 16 when irradiated by a headlight beam conducts and biases the base of the transistor 19 negative so that it conducts and current flows to the electromagnet 15, and the base of the transistor 20 is biased positive so that current does not flow to the electromagnet 14.
Patent GB-1274982-A (GB)
Title: Apparatus for conveying fish
Inventor: GNOTH WERNER
IPC: A22C25/08
Filed: 1970-09-26
Abstract: 1,274,982. Endless conveyer systems for fish. VOLKSWERFT STRALSUND VEB. 26 Sept., 1970, No. 45931/70. Heading B8A. [Also in Division A2] Fish are conveyed vertically downwards by spiked belts through a beheading station comprising a pair of circular cutters 17, 18 to a transfer point where they are received in a V-shaped channel formed by a pair of horizontally extending belts 21 and thence conveyed to further processing stations by a horizontal or inclined conveyer comprising a pair of spiked belts 22. The fish are delivered singly to the vertical conveyer, which comprises three pairs of belts arranged in three parallel planes, by a charging device 1 which consists of pivoted flaps actuated by a pneumatic device 9. The vertical belts, which are resiliently engaged by pairs of rollers 14, 15, 16, are held against yielding in the beheading region by guides 19, 20. Scrapers 23 remove the fish from the spikes.