baber/WOPTO huggingface dataset:
Patent GB-753581-A (GB)
Title: Improvements in electrical transformer tap-changing equipment
Inventor: FERGUSON ALEXANDER DALGETY
IPC: H01F29/04
Filed: 1953-09-04
Abstract: 753,581. Transformers. METROPOLITANVICKERS ELECTRICAL CO., Ltd. Sept. 21, 1954 [Sept. 4, 1953], No. 24524/53. Class 38 (2). [Also in Group XXXVII] A transformer tap changing system has the secondary winding of the transformer provided with two sets of intercalated tappings which can be connected as desired with the ends of a reactor, which reactor can, when connected to certain tappings, have its ends connected together so as to present a minimum impedance in the circuit, interlocking means being provided to prevent any section of the secondary winding being short - circuited. Two direct - current motors AM1, AM2 are supplied with current at varying voltage from a tapped secondary winding 4 of a transformer by means of transition reactors 6, 7, line switches LS1 ... LS4, single anode mercury arc rectifiers 1A, 1B, 2A, 2B, giving full wave rectification, and a smoothing reactor 8, the field windings F1, F2 of the motors being provided with reversing switches R1, R2. The tappings on each half of the secondary winding 4 are connected together in two groups by means of tapping contactors A1, A3, A5 or A2, A4, A6, the contactors designated B1 ... B6 being similarly arranged. In operation contactor A1 is closed, giving minimum voltage on the motors. Next contactor A2 is closed so that the reactor 6 has unequal voltages on its ends, the voltage applied to the motor being the mean of the voltages of the two tappings. The next step is to open contactor A1 and the next to close contactor A3 and so on, the operation of contactors B1 ... B6 being retarded by one step throughout. The requisite contactor A7 or A8 may be closed when only one tapping is connected to the reactor 6, thus current flows in both halves of the reactor to give minimum impedance thereof. The interlocking means are of the type wherein normally closed contacts are arranged on each contactor and which contacts are connected in the operating coil circuits of other contactors. The arrangement is such that only one of contactors Al, A3, A5 or one of contactors A2, A4, A6 can be closed at a time and contactor A8 can only be closed with one of contactors A2, A4, A6 and contactor A7 with one of contactors Al, A3, A5 but neither A7 nor A8 can be closed when one contactor of both groups is closed, thus rendering a short circuit on any section of the secondary winding 4 impossible. Contactors B7 and B8 are similarly operable.
Patent GB-293601-A (GB)
Title: Improvements in or relating to mining corves or like wheeled trucks
IPC: B61D11/00
Filed: 1927-09-19
Abstract: 293,601. Whitehead, A. Sept. 19, 1927. Capillary-action lubricating.-In a corve or like axle bearing comprising a bush e extending through a hollow block d slidable vertically between lugs c<1> depending from a bracket c, the bush is provided with one or more longitudinal grooves filled with fibrous material f which is in contact with the axle h and receives lubricant from the block through openings e<2>. The block has filling and vent openings normally closed by screws g. The wick f extends to the outer end of the bush and serves also to supply lubricant to the wheel boss.
Patent GB-938754-A (GB)
Title: Recording variable frequency signals
Inventor: SHANKS JOHN LEE
IPC: G01V1/24
Filed: 1961-07-07
Abstract: 938,754. Measuring short time intervals. JERSEY PRODUCTION RESEARCH CO. July 7, 1961, No. 24653/61. Class 37. [Also in Groups XIX, XXXVIII and XL (c)] In a method of recording an oscillating electrical signal of variable frequency similar significant points in each cycle of the signal are detected and a rectangular signal is generated, both the amplitude and duration of each voltage level of this rectangular signal being proportional to the time between a corresponding pair of successive significant points, and this signal is then recorded. An amplified signal at 10 (Fig. 1) from a source such as a seismic signal is passed to a zero crossing picker 11 of known form, which generates a sharp pulse of short duration for each crossing. These pulses are fed to a monostable multivibrator 12 and to a counter 14. The multivibrator gives a short positive output pulse to a differentiator 13 and thence to a sawtooth generator 15, which generates a constant linearly rising voltage upon being energized by a sharp positive pulse from the differentiator. At each pulse the sawtooth generator is reset to zero and starts to operate again. The sawtooth output is connected to the sample and hold circuits 26-34 (see Group XL (c)) one of which, provided it has been set by appropriate pulses derived from the counter, stores a corresponding sawtooth peak. The counter 14 has in fact five outputs sequentially energized from the zero crossing picker, so that an individual output is energized at every fifth pulse which it receives. Each such output is connected to a one shot multivibrator (46a-46e), from which two outputs of opposite polarity but otherwise identical may be obtained, these outputs being fed to a corresponding sample and hold circuit so as to enable it to operate. The counter outputs are also fed to similar delay multivibrators 16-24 providing both positive and negative pulses of greater duration, preferably approximately 5% longer than the longest half-cycle breadth, the duration and amplitude of pulses from each of these multivibrators being the same. At the junctions f, g . . . j the negative pulse from one multivibrator is added to the positive pulse from the next, these junctions being connected to gates 38-44, which are opened by the positive going sections of the outputs from the junctions. These sections are now equal in duration to the time between consecutive zero crossings of the original wave, but are delayed by such an amount as to bring them into time correspondence with the stored sawtooth peaks from the circuits 26-34. The outputs from the gates unite at junction 69 and the overall output is fed to a display apparatus 71 (see Group XIX), the output being a series of voltage levels, the amplitude and duration of which are proportional to the time between corresponding zero crossings of the original signal.
Patent GB-1259799-A (GB)
Title: Method and apparatus for rapid search distance measuring equipment
Inventor: AKER JOHN LEWIS
IPC: G01S13/78
Filed: 1969-05-14
Abstract: 1,259,799. Pulse radar. KING RADIO CORP. 14 May, 1969, No. 24671/69. Heading H4D. In a secondary radar, incoming pulses are searched to determine a "valid return" i.e. a reply from the desired transponder, such reply signal being received at a fixed or slowly changing delay, by successive trial time gates ("Marker" pulses), a Marker pulse jumping to the next received reply if a previous reply does not recur for several successive interrogation periods. The description is generally similar to that in Specification 1,249,630, which relates to the standard DME system utilizing the transmission of a jittered pulse pair in each interrogation period and replies from a ground station are pulse pairs, the spacing in a pair being twelve microseconds. In the embodiment, a unit holds a stored number (representing range) if during an interrogation cycle a second received reply falls within the limits set by a Marker pulse; if a reply falls within the Marker pulse limits for say six interrogation cycles the reply is a valid return and the search is stopped and replaced by range tracking. All timing functions are determined from a crystal oscillator clock. Pulse repetition frequency (p.r.f.) control.-The p.r.f. is approximately 30 c./s. in the tracking mode and 150 c./s. in the searching mode, and is generated by a transistor circuit for discharging a capacitor and including a potentiometer for p.r.f. adjustment. Jitter of the p.r.f. is effected by injection of a noise voltage from a Zener diode. It is arranged that the interrogation is transmitted on a clock pulse. Searching.-A time zone of Œ15 microseconds on the Marker pulse is utilized. The marker on the next interrogation cycle is generated at an instant corresponding to the arrival of a resetting pulse during the previous interrogation cycle (assuming no reply received in the above limits) thereby immediately advancing the Marker pulse to the next possible reply distance. A transistor determines whether a predetermined ratio of replies is received in several successive repetition periods. Tracking.-When a valid Return is detected it is tracked even if some subsequent repetition periods contain no reply at the range tracked; but if the percentage of such periods exceeds a predetermined magnitude the apparatus is caused to revert to the searching mode. Read-out.-Range is read out on a digital indicator. "Standby" operation.-A circuit senses whether the average decoded "squitter" rate received from the ground station falls below a rate corresponding to it being e.g. out of range; if so, the transmitter is rendered inoperative. Identification.-An audio circuit is added to permit a pilot to hear the Morse code identification letters of the ground station.
Patent GB-1012529-A (GB)
Title: A method of coating plastics with non-metallic inorganic films
IPC: C08J7/046
Filed: 1963-06-21
Abstract: A method of coating a plastic with a strongly adhering non-metallic inorganic film, comprises coating a heated solid support with a non-metallic inorganic film by a vapour phase technique involving a chemical reaction, bonding said film to said plastic, and separating said support from said film.  In one example a sheet of gold foil is clamped to a cast iron hotplate and is subject to a chemical vapour phase reaction in which titanium chloride vapours react with atmospheric humidity to deposit a smooth and brilliant film of titania on the foil.  The heating of the plate is turned off and the foil allowed to cool to about 200  DEG C. when it is pressed against a polyethylene sheet. The foil is removed from the hot-plate and on further cooling to room temperature is detached from the polyethylene sheet.  In another example, a centrifugal casting drum is lined with a thin foil of gold and is rotated slowly while subject to a chemical vapour phase reaction by which the gold foil receives a coating of tin dioxide.  The drum is then cooling and a polyester resin mixed with a suitable catalyst such as lauroyl peroxide is poured into the drum the speed of rotation of which is increased to effect centrifugal casting.  After cooling the hardened polyester sheet having a hard strongly adhering electrically conducting layer of tin dioxide is removed from the drum.  In another example a glass plate is heated by infra-red heaters and has applied thereto a film of titania which is then silvered by a known process.  An epoxy resin is then applied to the silver mirror before it is pressed against and bonded to a transparent polyester sheet.  The polyester sheet with the silver and titania coatings is then carefully removed from the glass.  A second polyester sheet is cemented to the first by a liquid transparent polyester resin or epoxy resin and hardener.  In another example graphite moulds shaped to cast plastic buttons are heated to about 1100  DEG C. and coated with a thin layer of silicon before being filled with the desired plastic which is bonded to the silicon coating.  In a final example a picture frame mould is lined with gold and is coated with an inorganic film before the introduction of polyethylene powder.
Patent GB-630352-A (GB)
Title: Improvements in or relating to means for preserving foodstuffs and other perishable commodities
IPC: A23L3/36
Filed: 1947-09-10
Abstract: 630,352. Cooling perishable commodities. COOK, H. M. Sept. 10, 1947, No. 24871, [Class 49] [Also in Group XIII] Apparatus for preserving a perishable commodity, e.g., fish, fruit, vegetables, flowers comprises an insulated tunnel 14 through which a series of carriages 31 of the commodity pass, and means for circulating air through the tunnel, which includes a separate chamber 20, containing cooling elements 19, receiving air withdrawn by a suction fan 15 from the tunnel, and cold air delivery ducts 10 from this chamber to the ends of the tunnel. The carriages may be on endless chains 13, and may be discharged at the exit end of the tunnel by inverting. The air locks of the apparatus of Specification 593,211 are dispensed with.
Patent GB-399969-A (GB)
Title: Improvements in or relating to tins, canisters and like metal containers
IPC: B65D25/20
Filed: 1932-09-07
Abstract: 399,969. Labels for cans &c. ROBINSON, F. G.,.Canister Works, Southcoates Lane, Hull. Sept. 7, 1932, No. 24883. [Class 73.] Tins, canisters, and like metal containers having holders for labels are characterized by the holder and labels co-operating to secure a tight fitting label without permanently securing the label. In the form shown in Fig. 1, the holder 1 has upstanding, flanged, inclined edges 4 with which the inturned edges of the label 2 engage. Fig. 4 shows a form in which the label 2 is undulated to fit the correspondingly shaped edges 4 of the frame-like holder 1. In modifications of this form, the label is provided with a single indentation at its top or bottom edge to engage corresponding indentations in the side edges of the frame, or is provided with an indentation or slot to engage a corresponding indentation or tongue in the back of the frame. The sides and bottom edge of the frame may be provided with spring tongues, or, as shown in Fig. 15, the can has a bulge 5 which holds the label in place ; the bulge may be provided on the back of the holder, or the label may be held in place by the lid.
Patent GB-532424-A (GB)
Title: Improvements in the production of non-knocking motor fuels by the conversion of hydrocarbons
IPC: C10L1/06
Filed: 1939-08-30
Abstract: 532,424. Cracking oils. I. G. FARBENINDUSTRIE AKT.-GES. Aug. 30, 1939, No. 24885. Convention date, Aug. 31, 1938. [Class 32] Hydrocarbons obtained by the reaction of carbon monoxide with hydrogen are cracked catalytically in admixture with a paraffinic base petroleum oil or fractions thereof. The cracking is carried out at 400-650‹C. in presence of catalysts, e.g. natural or artificial aluminium silicates, alumina, preferably in admixture with the metals chromium, molybdenum, tungsten or manganese or their oxides, metal oxides alone (singly or in admixture), magnesia, zinc oxide, or active carbon. A contact time of 0.2 to 5 seconds is employed and the catalyst is regenerated at intervals of from 0.5 to 2 hours bv treatment with gases containing oxygen. The reaction may be carried out in the presence of gases, e.g. hydrogen, and under pressures of from 50-70 atmos. A mixture containing 60 per cent. of a hydrocarbon fraction boiling between 210 and 360‹C. obtained by the reduction of carbon monoxide and 40 per cent. of a gas oil of similar boiling range is led at 450‹C. over a catalyst comprising silica and alumina with a throughput of 100 volumes of oil per 100 volumes of catalyst per hour. A product is obtained containing 30 per cent. benzine boiling up to 200‹C. of which 40 per cent. boils off under 100‹C. and has an octane number of 70.
Patent GB-447718-A (GB)
Title: Improvements relating to thermostatic control apparatus
IPC: G01K5/50
Filed: 1935-09-06
Abstract: 447,718. Thermostats. WESTING- HOUSE BRAKE & SIGNAL CO., Ltd., 82, York Road, King's Cross, London.-(Assignees of Compagnie Belge des Freins Westinghouse; 97, Avenue Louise, Brussels) Sept. 6, 1935, No. 24915. Convention date, Sept. 26, 1934. [Class 64 (ii)] [See also Groups XXXVII and XXIX] Relative expansion of a tube T and a rod V with variations of temperature causes operation of contacts P, P<1> or of a valve by means of the turning moment exerted on an intermediate member which is substantially parallel to the rod and tube and is connected to them by non-pivotal joints, e.g. soldered joints. In the form shown, the intermediate member is the lower portion of the strips c carrying the contacts P, P<1>, this lower portion being soldered at its ends C, D to strips a, b which are themselves soldered at B and A to the tube and rod. The tube T may have heat radiating fins S and may be enclosed in a perforated outer casing. In modifications, the rod V is connected to the tube T through intermediate springs and adjusting members, the springs taking up extra movement after the contacts have engaged each other or separated more than a certain amount.
Patent GB-599535-A (GB)
Title: Improvements in coat hangers
IPC: A47G25/40
Filed: 1945-09-26
Abstract: 599,535. Garment hangers. HAFFNER, L. Sept. 26, 1945, No. 24997. [Class 52(v)] In a coat hanger of the kind comprising a central part having collapsable side arms hinged to the central part and adapted to fold into the central part when collapsed the supporting hook d is hinged to the central part so that it can be folded against the side thereof. The side arms are, as shown, composed of sections e-h hinged together but in a modification the sections may comprise tubular telescopic parts. The central part a is comprised of plates spaced apart so as to house the side arms when collapsed. Specification 130,826, [Class 141], is referred to.
Patent GB-935101-A (GB)
Title: Improvements in broaching machines
Inventor: POYNTER CYRIL EDWARD
IPC: B23D37/06
Filed: 1960-07-18
Abstract: 935,101. Broaching; making connecting- rods. WEATHERLEY OILGEAR Ltd. July 14, 1961 [July 18, 1960], No. 25017/60. Classes 83 (2) and 83 (3). A surface broaching machine comprises means 15, 16 for shifting a work-table 13 to present more than one face of a workpiece successively to a set of tools on a broach bar 4. The hydraulic devices 15, 16 move a connecting- rod blank 14 towards or across the broach bar under the control of a punched card or pegged-cylinder programming apparatus, which alternatively may operate electric or mechanical means for moving and locking the worktable. Tools 5, 6 broach faces 2 in four strokes, the blank being withdrawn on the idle strokes. Tools 7, 8 then broach the surfaces 3. Tools 9, 11 part the two portions of the rod on one side and tools 10, 12 complete the machining operations.
Patent GB-1241118-A (GB)
Title: Improvements in conveyor rolls in glass-bending apparatus
IPC: C03B23/03
Filed: 1969-05-16
Abstract: 1,241,118. Bending and conveying glass sheets. LIBBEY-OWENS-FORD CO. 16 May, 1969 [24 May, 1968], No. 25063/69. Heading C1M. Apparatus for bending glass sheet, e.g. to form vehicle windscreens, comprising an upper, stationary mould member 11 and a movable, lower mould member 12, e.g. of the ring type, in which a glass sheet is bent by raising the lower mould member by means of the ram 29 and guide members 28 so that a heat-softened glass sheet resting on conveyer rolls 17 against the stop 36 is raised and bent partially by sagging under its own weight and partially under the influence of the upper mould member, is characterized by having conveyer rolls 17 constructed with an outer sleeve 39 with a cover 46 (asbestos or fibre glass) which fits loosely over the driving shaft 38 in which it is in single line contact only so that, when a glass sheet abuts against the stop 36, slippage occurs between the roll and the driving shaft, thus reducing the distorting forces asexerted on the glass sheet.
Patent GB-827420-A (GB)
Title: Improvements in boot and shoe brushing and cleaning machines
IPC: A47L23/02
Filed: 1957-08-09
Abstract: 827,420. Shoe-cleaning machines. BREESE, B. D., [trading as BAKEWELL PRECISION GRINDING CO.]. June 23,1958 [Aug. 9, 1957], No. 25138/57. Class 138(1). A coin-operated automatic machine for brushing and cleaning boots or shoes includes a base 10 and casing 11, a pair of revolvably mounted brushes 23, 24 driven by an electric motor 25, a time-control switch 31 for starting and stopping the motor 25 operated by a coincontrolled push-button 312 and a coin collecting box.341. On .inserting a coin through a slot 363 and depressing the push-button 312, the motor is started and on its release the coin falls into the box 341 and the switch allows the brushes to rotate the predetermined time during which a translucent panel 14 having advertising facia is illuminated by a light 16. The brushes 23, 24 are side by side in an open recess 17, their shafts, e.g. 20, projecting above a mounting bracket 18 each having a pulley, e.g. 22, the motor 25 being secured to the bracket, with its shaft 27 having a pulley 28 wrapped with pulleys 21, 22 by a belt 29. The time-switch unit 31 is mounted on a bracket 306 secured to the casing roof 113, to which is attached a slot-meter body 32 in register with a coin-slot 114 in the casing 11, a non-turning push-button plunger 36 influenced by a spring 38 being slidably mounted in the casing 11 and a bore 324 axially aligned with the push-button 312 of the timeswitch 31, and having a vertical coin slot 363 in register with the slot 323 in the body 32, a non-turning adaptor 39 having one end con. tacting the push-button 312 and the other end with a coin slot 391 in register with the slot 363, a cover plate 33 being secured to the body 32 with a slot 332, from which a coin shoot 34 leads to the box 341. There is a gap between the plunger 36 and the adaptor 39, bridged only by inserting a coin to operate the time-switch. Means is provided for supplying the brush 23, which applies it, with a polishing compound 42 including a cylinder 40 attached to the casing 11, the compound 42 being slidably mounted in a cylinder 41, and held in contact with the brush 23 by a disc 44 and a spring 46 on an adjusting screw 43, the cleaning and polishing being done by the brush 24. Steadying knobs 50 for the user are furnished.
Patent GB-604128-A (GB)
Title: Improvements in or relating to sheet conveying apparatus
IPC: B65H1/18
Filed: 1944-12-15
Abstract: 604,128. Feeding sheets. STEVENS, A. H. (Miller Printing Machinery Co.). Dec- 15, 1944, No. 25204. [Class 100(i)] A pile support for a sheet - feeding or like machine is raised by means such as chains 7 which are driven by means controlled by the height of the pile comprising a bar 41 movable transversely of the direction of movement of the support 9 when the pile attains the desired level indicated by the line A, Fig. 3. The bar 41 is fitted with a cam member 45 formed of inclined members 47, 48, and is pressed towards the pile by a spring 46 and normally occupies the position in which the cam is shown by full lines. When the pile reaches position A the cam is pressed to the left in Fig. 3, and operates a tilting mercury switch 36 so as to open the circuit of a motor 27 which drives the worm gearing for raising the pile support. The support may be under the control of the motor 27 alone, or the motor 27 may be used as an auxiliary control to a known form of pile-raising means in which ratchet-operated gearing is controlled by mechanism as described in Specification 584,730. The sheets are fed forwards by two sets of suction devices 32, 33 as described in Specification 601,373.
Patent GB-1065667-A (GB)
Title: Advanceable mine roof support
IPC: E21D23/00
Filed: 1964-06-18
Abstract: 1,065,667. Advancing mine roof supports. STAMICARBON N.V. June 18, 1964 [June 20, 1963], No. 25322/64. Heading E1E. Mine roof support frames 1, 1', each comprising props 2, 3 are connected to respective advancing cylinders 8, Fig. 4 (not shown), slidable side-by-side in rectangular passageways (7) in a movable guide 6. Springs 9, 10 allow relative movement over uneven ground. The piston 13 shown has a rod 14 which extends through both ends of the cylinder and is connected to the guide 6 at 15, 16. The second piston (not shown in Fig. 1) is similarly connected. Alternatively the guide 6 may be connected to a piston rod or cylinder by stops. During advance, pressure is admitted to the first cylinder 8 to move it along the guide 6 and then to the second cylinder 8 to move the guide 6 itself. The ends of the cylinders 8 ar formed as or provided with ploughs 19 to clear debris from the guide 6. Reference has been directed by the Comptroller to Specification 850,170.