baber/WOPTO huggingface dataset:
Patent GB-1258435-A (GB)
IPC: G01N27/80
Filed: 1969-06-13
Abstract: 1,258,435. Electromagnetic flow detectors. AMF Inc. June 13, 1969 [March 27, 1969J, No.30051/69. Heading G1N. Hard-spots in buried steel pipe-lines are detected and distinguished from cold-working anomolies by comparing the relative magnitude of peaks in the records of an active magnetic flux test and a residual flux test. With a hard-spot the active signal is larger, while cold-working produces a larger residual signal. Measurements are made by a fluid propelled pig Fig.1 with a central electromagnet 25 with polediscs 28, 29 having peripheral flux-conducting bristles 31, 32 to engage the walls of the pipe. A tapered trailing pole 38 minimizes demagnetization as the pig moves on. Coils 36, 37 contact the pipe between the poles and detect active leakage flux while trailing coils 42, 43 detect the residual leakage flux. These coils cover a sufficiently large area to avoid significant response to small cracks and corrosion pits. Batteries and recorders are housed in containers 16, 17. Preferably a multitrack-tape is used to record e.g. traces from six active and six residual coils which may later be transposed to a pen recording Figs. 2, 3 (not shown) with peaks (FW) representing field welds; (CW) cold-working and (HS) hard-spots. AUTOMATIC DETECTION Fig.4 (not shown). Play-back heads are disposed along the tape to produce time coincidence of residual and active signals which are applied through adjustable gain amplifiers set to give suitable relative amplitudes. After full-wave rectification the signals are applied to a difference amplifier which operates an indicator when the active channel has the larger signal. The large "field-weld" signals may be clipped by a Zener-diode in one channel to leave marker pulses.
Patent GB-1264641-A (GB)
IPC: D03C13/00
Filed: 1969-02-28
Abstract: 1,264,641. Shedding motions. BREVITEX ETABS. POUR L'EXPLOITATION DE BREVETS TEXTILES. 28 Feb., 1969 [6 March, 1968], No. 10890/69. Heading D1E. A cam shedding motion for a smallwave loom comprises rods 6 which support heald frames 4 and are downwardly urged by springs 7, 8 upward movement being provided by a pack of cams 15 each of which acts through a single bell-crank lever 16 to move a rod 6. The cams are removably mounted on shaft 20 so that they may be replaced for different weaves. The casing 17 can be filled with lubricating oil and sealing glands 18, 19 are provided.
Patent GB-1265917-A (GB)
IPC: C03B5/182
Filed: 1970-05-15
Abstract: 1,265,917. Glass melting tank. P.P.G. INDUSTRIES Inc. 15 May, 1970 [22 May, 1969], No. 23605/70. Heading F4B. [Also in Division C1] A glass melting tank 10 including side walls extending longitudinally from a batch feeding end 12 to a drawing end where drawing bays 14 are located and compartments in the form of skim kilns 22 on opposite sides of the tank into and out of which molten glass may flow, the compartments have walls extending outwardly from the tank walls and opening into the body of the tank and a fluid cooled member 24 is disposed across each of the compartments to control the flow of glass into and out of the compartments. The tank 10 may have a restricted neck 18 intermediate its ends, across which is disposed a further fluid-cooled member 20. The fluid-cooled members are each of a metal such as stainless steel and the cooling fluid is water.
Patent GB-1288496-A (GB)
IPC: G03B1/00
Filed: 1970-03-24
Abstract: 1288496 Cine cameras ROBERT BOSCH ELEKTRONIK UND PHOTOKINO GmbH 24 March 1970 [25 March 1969] 14204/70 Heading G2E In a cine camera whose driven film take-up spindle has a return stop which prevents return feed of the film for dissolve photography, the takeup spindle is temporarily switched to a reduced speed while the film supply is maintained at the normal speed until a predetermined surplus length of film has built up in a space provided in the film take-up compartment of a cassette in the camera. The speed change is provided by gears 12, 10, 21, 22, 29, 30, 31, 33, 34 between motor 14 and gear 35 with a lug 23 engaging the take-up spindle in the cassette. For normal speed, gear 33 engages gear 35, as shown, until swung away on swivel plate 38 to engage slower running gear 34 with gear 35. This displacement of plate 38 is performed by extension 54 of a two-armed lever 52, pivoted at 36, which is manually rotated clockwise by handle 53 until locked in the slow-speed position by notch 59 in lever 58. This rotation of lever 52 engages driven friction wheel 55 with disc 56 to rotate plate cam 86 of a timing mechanism 57. This mechanism controls the duration of the slow-speed take-up and also energizes motor 98 to rotate an auxiliary shutter 96 relative to the adjacent main shutter 6 driven by motor 14 whereby the exposure sector is progressively closed. Plate cam 103 controls the operating time of motor 98. Motors 14 and 98 are then stopped by mechanism 57 and button 74 is depressed to reverse motor 14 to re-wind the surplus film on to the supply spool. Release button 19 is then depressed to initiate normal feed and take-up, rod 67 and lever 64 tripping locking lever 58 to release swivel plate 38 from the slow-speed position. Depression of button 19 also initiates progressively opening of the exposure sector between shutters 6, 96.
Patent GB-1288768-A (GB)
IPC: H04L27/156
Filed: 1969-09-19
Abstract: 1288768 Frequency shift signalling ANDERSON JACOBSON 19 Sept 1969 [19 Sept 1968] 46374/69 Heading H4P In a frequency shift discriminator where clock pulses are counted for all or part of a cycle of the received frequency and the count indicates the frequency received, the incoming signal is limited in amplitude and an indication given if the product of frequency and amplitude falls below a predetermined level the discriminator is of the kind disclosed in Specification 1,288,238 where a clock oscillator is triggered at the beginning of each cycle. In Fig. 2 the received signal is squared by diodes D1, D2, and of an amplitude determined by the diodes and the voltage on capacitor 25, which is determined by the amplitude and frequency of the incoming signal. Within the range of the two frequencies expected there is little change in capacitor voltage, but if the input falls significantly in amplitude or frequency the capacitor voltage falls and a Schmitt trigger connected at 29 is triggered to signal accordingly. A larger capacitor 33 and diode D3 connected in parallel insures that the voltage at 29 takes time to restore, however with a momentary fall in input, capacitor 25 discharges through resistor 26 so reverse biasing diode D3 and holding the voltage on capacitor 33 which slowly leaks away via resistor 34. For each cycle of the incoming signal, if the discriminator fails to detect either of the expected two frequencies it triggers transistor Q1 for all or part of the cycle causing capacitor 33 to discharge. A repeated failure will eventually lower the voltage at terminal 29 low enough to trigger the Schmitt trigger. The square wave signal issued at terminal 27 (Fig. 2) is differentiated and the positive pulses of which cause a counter to be read out and immediately reset and driven forward with the re-synchronized clock pulse generator (Fig. 4, not shown). The counter is a four-stage binary counter with decoding NAND gates connected to three of the stages which read the counter at the positive differentiated square-wave pulses to set or reset a bi-stable circuit depending upon which signal frequency has been received.
Patent GB-1288839-A (GB)
IPC: F04B49/12
Filed: 1970-03-25
Abstract: 1288839 Linkwork G R PAYNE 22 June 1971 [25 March 1970] 14418/70 Heading F2K [Also in Division F1] In a reciprocating pump, the pistons 17, 18 are reciprocated by inclined discs 4, 5 fixed to shafts 3 and 6, respectively, shaft 3 being the pump drive shaft and shaft 6 being axially adjustable to vary the spacing between the discs, and hence the piston stroke. Discs 4, 5 have peripheral teeth meshing with axial teeth on sleeves 12, 13, Fig. 3 (not shown), rotatably mounted on the piston-rods 14, 15. Abutments 29 are engaged by discs 4, 5 to reciprocate the pistons. Shaft 6 has a portion 9 guided by a bearing 28 in shaft 3, and is supported at its opposite end by a bearing 8 in a plate 7, Fig. 2. Plate 7 is guided by rods 23 passing through casing 1, and is movable by lever 26 against springs 25 to adjust shaft 6.
Patent GB-1296214-A (GB)
IPC: F16D51/20
Filed: 1969-07-03
Abstract: 1296214 Internal shoe drum brakes AUTOMOTIVE PRODUCTS CO Ltd 25 June 1970 [3 July 1969] 33589/69 Heading F2E An internal shoe drum brake comprises a pair of brake shoes 10, 11 and an automatic wear adjusting device. The adjusting device includes a strut 16 which extends between the brake shoes 10, 11 and abuts at one end against one, 10, of the brake shoes. The other end of the strut is arranged to engage a member 21 which is pivotably mounted on the other shoe 11, there being a lost motion connection in the assembly comprising the strut 16, the member 21 and the other shoe 11, the lost motion comprising the normal clearance of the brake shoes from the drum. A spring loaded snail cam 26 urges the member 21 into engagement with the strut and during the lost motion movement the member 21 pivots about the snail cam without play. If however excess movement is necessary to apply the brake due to wear having taken place play would normally occur between the strut 16 and the member 21. This "play" is taken up by rotation of the cam 26, which, when the brake is released remains in its rotated position. In the construction shown the lost motion connection comprises a slot 22 in the member 21 and a pin 23 on the other brake shoe, the outer end of the slot in the rest position of the brake being held against the pin 23 by the co-operation of the strut 16, the member 21 and the cam 26. In operation the slot 22 traverses the pin 23 to provide the lost motion under the action of a torsion spring 24. Two springs 18, 25 act on the strut 16 in opposite directions, the spring 18 being stronger than the spring 25 so that the strut 16 is always urged into engagement with the brake shoe 10. The brake is normally actuated by a fluid pressure wheel cylinder 14 but a manually operated assembly comprising a lever 29 is also provided, the liner 29 being pivoted to the strut and an inner end portion of the lever working in an aperture in the web of the shoe 10 (Fig. 2, not shown).
Patent GB-1296905-A (GB)
IPC: B23K3/08
Filed: 1970-05-28
Abstract: 1296905 Cavity resonators SIEMENS AG 28 May 1970 [31 May 1969] 25848/70 Headings H1D and H1W [Also in Divisions C7 and H5] A superconductive cavity resonator is made by melt-electrolysis deposition of niobium upon a substrate of the same metal, the deposited layer being subsequently degasified. The figure shows the finished form of a cylindrical cavity resonator which is built up from a winding 51 of niobium wire upon which inner and outer layers 54, 53 are deposited by melt electrolysis. The wire may be rectangular cross-section (Fig. 4, not shown) whereby the substrate presents smooth surfaces. It is initially wound upon a cylindrical copper former which is subsequently dissolved. The substrate may also be formed from niobium sheet, e.g. in the case of more complicated shapes, by a deep-drawing process. The Specification also describes the manufacture of a double-omega resonator (Fig. 5a) for use in a particle accelerator. Parts 70, 71, 73 of the resonator may be made by the wire-winding method and the other parts made from niobium sheet. The wire-wound parts are electrolytically coated with niobium on the outside and then joined to the rest of the parts by electron-beam seam welding. The whole of the inside of the resonator is then provided with an electrolytic niobium layer. The deposited layer is at least 0À3 mm. thick and, after degasification, is stated to have less impurities and higher residualresistance ratio than the substrate. The degasification is carried out at a temperature of about 2000 C. under a vacuum of 5 x 10-8 mm. Hg for about 15 hours. The substrate may be heat-treated under similar conditions before electrolysis, in order to improve surface grain structure and to promote epitaxial growth of the deposited layer.
Patent GB-1297099-A (GB)
IPC: F28F1/40
Filed: 1971-04-19
Abstract: 1297099 Grooved tubes ELECTROLUX Ltd 19 April 1971 [10 March 1970 28 May 1970] 23080/71 Heading F2P [Also in Division F4] Heat transfer conduits 21 (of absorption refrigerating apparatus) have preferably capillary grooves 22 approximately square in section at angle α to the generatrix 23 of the conduit. The conduit 21 is disposed at angle # to the horizontal 24 and preferably angle α is about 6 degrees and # about 10 degrees. In other enbodiments, the grooves form a fish-bone pattern, the vertices of the angles at the centre line of the portion being directed against the flow direction in the conduit. Alternatively indentations may be formed in the upper portion of the conduit which form drip points, with indentations in the lower portion forming pools to catch the drops.
Patent GB-1297234-A (GB)
IPC: F16L55/115
Filed: 1971-09-21
Abstract: 1297234 Pipe stopper RACIBORSKA FABRYKA KOTLOW 21 Sept 1971 [21 Sept 1970] 43846/71 Heading F2P A pipe stopper comprises an outer sleeve 1 the inside bore of which tapers outwardly from the leading edge, an inner sleeve 2, having an external conical face for location in the sleeve 1 and slidable therein, a locking element 4 adapted to abut against the inner sleeve and urge it towards the leading end of the outer sleeve; the arrangement being such that when the stopper is located over the end of a pipe, the inner sleeve can be forced against the outer surface of the pipe and the inner surface of the outer sleeve to lock the stopper on the pipe, sealing means 5 being provided to locate between the locking element 4 and the pipe. In the arrangement shown a locking screw 7 is used to exert axial force on the element 4 and the sleeve 2 has teeth to engage the pipe, In other embodiments the element 4 is screwed into the sleeve 1. The element 4 may be provided with a vent plug (10) (Fig. 3, not shown).
Patent GB-1311871-A (GB)
Title: Auger pump
IPC: F04D3/02
Filed: 1969-03-28
Abstract: 1311871 Auger pumps HOWARD ROTAVATOR CO Ltd 29 June 1970 [28 March 1969] 16503/ 69 Heading F1C An auger pump for raising slurry or sludge comprises means for providing a secondary discharge for recirculating and/ or agitating the contents of the storage container or pit from which the material is being pumped. The secondary discharge is taken through a branch B adjacent the main discharge branch A. The branch B is normally closed by a valve or, as shown, a flap D hinged at E and held shut by a retaining key F inserted through a hole in a fitting I. When the branch B is to be used, a coupling G and a hose H are fitted. A control valve may be fitted in the hose H or at C.
Patent GB-1317073-A (GB)
Title: Surgical pads
IPC: A61F13/00
Filed: 1971-11-24
Abstract: 1317073 Surgical pad and wrapper PRATT MFG CORP 24 Nov 1971 54507/71 Heading A5R [Also in Division B8] A surgical pad 14 has a wrapper, the pad 14 being folded into an elongated shape with edge portions 15 turned inwardly toward one another, thus covering the surface 25 of the pad intended to contact a wound, the material of the pad being such that the edge portions 15 tend to unfold when the pad is removed from the wrapper; the wrapper having a longitudinally-extending opening 10 adjacent the side of the pad opposite to the folded edges 15, the opening 10 having a removable closure 11, and being only slightly shorter and narrower than the pad 14 to facilitate removal of the pad by gripping the surface exposed when the closure 11 is removed; the wrapper being sealed at both ends along transverse lines (23), Fig. 4 (not shown) spaced outside the ends of the closure 11. The edge portions 15 meet along a longitudinal centre line 16. The closure 11 has a tab (12), Fig. 4 (not shown) which may have a coloured strip (13). The pad is preferably -made of cotton, cellulose fluff, or other highly-absorbent material, with an outer covering 18 of a non-woven material with a relatively smooth surface to prevent the folded layers clinging to each other. The wrapper is made of bleached sulphite paper or other steam-permeable material, and the closure 11 may be a transparent film such as polyethylene. The package is sterilised by steam after manufacture.
Patent GB-1321223-A (GB)
Title: Reinforced plastics tube
IPC: B29C48/09
Filed: 1969-06-16
Abstract: 1321223 Extruding reinforced tube CREATORS Ltd 16 Sept 1970 [16 June 1969] 30463/69 Heading B5A [Also in Division F2] A reinforced plastics tube comprises an extruded tube 1 of a first plastics e.g. of flexible P.V.C., externally reinforced by a mesh 2 of a second plastics material e.g. rigid or semi-rigid P.V.C. or nylon, which has been extruded with the strands thereof integral at their crossing points. The mesh 2 may be bonded to the tube 1 either under heat and pressure and/or by adhesive. The net 2 may be embedded in the tube 1 and the reinforced tube may be enclosed in an outer extruded sheath preferably compatible with, and bonded to, the outer surfaces of the tube 1 and mesh 2. In the described embodiment, the tube 1 and mesh 2 are simultaneously extruded respectively through a tube die outlet supplied from a first extruder 12, and through a die outlet concentric therewith and comprising a plurality of orifices 15 disposed on a circular path and each being defined by half sections in each of outer die member 14 and an inner die member 13 which produce the integral net structure by relative rotation, or by the oscillation of both or one thereof e.g. by a crank cam 17, through a relative distance of one circumferential pitch of the mesh aperture, the net 2 being bonded to and partially embedded in the surface of the tube 1 by passage through a water cooled vacuum sizing die (not shown). The outer member 11 of the tube die outlet may also be rotated or oscillated. The mesh size and pattern may be varied by the size and disposition of the extrusion apertures thereof and the frequency of oscillation of the elements 14 and/or 13 relative to the extrusion speed of the tube 1.
Patent GB-1341215-A (GB)
Title: Press tool for producing shoe soles
IPC: B29C33/00
Filed: 1970-12-21
Abstract: 1341215 Moulding foamed plastics materials BOR - MUBOR - ES CIPOIPARI KUTATO INTEZET and VSESOJUZNY NAUCHNOISSLEDOVATIELSKY INSTITUT PLENOCHNY MATERIALOV I ISKUSSTVENNY KOZHI 21 Dec 1970 [30 Dec 1969] 24604/73 Divided out of 1341212 Heading B5A A mould for use in a press for the production of shoe soles of foamed material comprises lower and upper mould parts 25a, 25b attached, respectively, to plates 24, 23, a vertically reciprocable knife 26 which cuts the sole to shape after a sheet of rubber mixture has been compressed and vulcanized between the mould parts. An arrangement for locking the mould closed when the knife cuts the sole comprises a number of pins 30 on the plate 24, each grooved at 33 to receive balls 34 located within bushes 32 depending from the plate 23. The balls are urged inwardly into the grooves by sleeves 35 which move downwardly with the knife during the cutting stroke.
Patent GB-1344312-A (GB)
Title: Digital encoding system
IPC: H04N11/04
Filed: 1971-08-27
Abstract: 1344312 Digitally encoded colour television POST OFFICE 22 Aug 1972 [27 Aug 1971] 40309/71 Heading H4F An analogue signal including a base band and a modulated subcarrier is differential pulse code modulated by comparing the instantaneous and a previous value of the signal at each sampling instant and encoding the difference; both values having the same subcarrier phase. The invention is particularly directed to the encoding of colour television signals with the previous value being either on the same line or at about the same horizontal position on a previous scan line. A sampling frequency of three times the subcarrier frequency is preferred and is used in all the examples. As shown, (Fig. 5) the signal to be encoded is fed to subtracting element 2. The resulting difference signal is sampled and quantized at 3 and encoded in coder 4. The difference is also applied to adding element 5 and after delay in D1 and D2 the difference signals are recombined at 6A and fed to subtractor 2. The output of 6A is also fed back to adder 5. Delay D1 is the period of the subcarrier frequency, i.e. three times the sampling frequency and gives the "same line" comparison (i.e. RP on Fig. 6, not shown) and delay D2 is the time for one line scan plus or minus half the period of the subcarrier frequency for an NTSC signal, i.e. PU on Fig. 6. Xa 1  and Xa 2  weight the signals to give the best resulting picture which is obtained after transmission by a complementary decoding system 8-11. Either the same line or the previous line delay may be used on its own (Fig. 4, not shown). For PAL signals with line by line phase reversal a similar system using same line comparison (RP on Fig. 7, not shown) and/or two line delay comparison (VP on Fig. 7) may be used or else a different system is used (Fig. 8) in which delay D1 gives "same line" comparison as with the NTSC signal (RP on Fig. 9). D2 produces the delay on the preceeding line and the output signal is modulated at 12 by a carrier of twice the subcarrier frequency, low pass filtered 13 and passed to the subtracting element 2. Further algebraic methods are described for PAL encoding in which for example D1 is the delay PQ (Fig. 9), D2 is the delay PS and D3 (in Fig. 8) is the delay SU.
Patent GB-1345002-A (GB)
Title: Container discharge systems
IPC: B65D88/66
Filed: 1970-12-28
Abstract: 1345002 Discharging hoppers by vibrations BULK UNIT LOAD SYSTEMS Ltd and G W SNAPE 29 Dec 1971 [28 Dec 1970 23 Feb 1971 30 March 1971] 61380/70 5234/71 and 8181/71 Heading B8S Apparatus for discharging material from a hopper 14, Fig. 2, comprises a frame 12 which is vibrated strongly when the hopper is full and less strongly as the amount of material in the hopper decreases, the change to the weaker vibrations being made automatically. Motors 21, 22, with out of balance weights, provide the initial vibrations and motors 23, 24 provide weaker vibrations when some of the material has been discharged. If hopper 27 becomes full a switch 28, 29 stops the vibrators. Motors 21, 22 are stopped after a predetermined time if the automatic switch-over to motors 23, 24 fails to operate. Automatic control of the motors may be effected by a switch which responds to the compression of an elastomeric support between the frame 12 and a fixed frame 11. A hinged door in the base of the hopper is opened by rotating a handle 60, Fig. 4. The door is held closed by a screw operated latch. When a shaft 110, Fig. 8, rotates in the direction of arrow Q a peg 114 attached to a weight 111 fast on the shaft pushes a weight 115 round in the position shown in full lines. When the shaft rotates in direction P the peg 114 pushes weight 115 round in an overlapping position shown chain-dotted. Alternative positions 116, 117, 118 are provided for the peg 114.