baber/WOPTO huggingface dataset:
Patent GB-1243137-A (GB)
Title: Tape recording/playback device
Inventor: BOLICK FRED CLINARD JR
IPC: G11B27/13
Filed: 1969-07-08
Abstract: 1,243,137. Recording and playback. LANIER ELECTRONIC LABORATORY Inc. 8 July, 1969, No. 34316/69. Heading G5R. In an arrangement for indicating the net transfer of an endless tape in a first direction past a reference position in a tape recording playback system, an indicator is operable during a record operation while tape is moved in the first direction and a control system is operable to prevent operation of the indicator when the particular tape section being driven past the reference position in the first direction has previously been driven past the position in the other direction. This prevents movement of the same section of tape from being recorded twice. The record/playback circuit may be such that record and listen facilities are separately controlled by appropriate operation of a switch 24 in circuit with drive arrangements 12 for moving the tape in the first direction. The indicator, which is a timer A, is connected in circuit with the record facilities only. A second arrangement 15 may also be brought into circuit by the switch 24 to enable the tape to be rewound prior to a listen operation. Obviously for correct indication, material must not be recorded over existing recordings. In an alternative arrangement which automatically prevents the indicator operating during the passage of previously recorded tape, both transcribe and listen facilities may be brought into circuit with the forward drive 17 by the switch 25. If the tape is reverse wound by changing the position of switch 25 to actuate the reverse drive circuits 20, a relay winding L2 is energized to switch on an oscillator 26 to provide a tone which is recorded by head 27 on the reverse travelling tape. If this tone is detected as the tape travels forward, the signal from the head energizes a relay L1 via amplifier 28 to open a switch C1 in the timer circuit B, so that this does not operate. Only when recording on previously unrecorded tape will the switch be closed and the timer be operational. Both embodiments may be provided together in a system for simultaneously recording and transcribing endless tape with intermittent recording/transcribing review, on which the recording and transcribing facilities are provided at spaced locations between which the tape passes via temporary storage bins. Timer A may be associated with the recording station and timer B with the transcribing station. The difference in reading between the two will give an indication of the surplus tape in the bins.
Patent GB-829792-A (GB)
Title: Improvements relating to the formation of phosphate coatings
IPC: C23C22/78
Filed: 1956-11-09
Abstract: A phosphate coating is formed on a metal surface by cleaning the surface with an alkali cleaning solution, treating it with a solution of one or more condensed-phosphates which has a pH of at least 7 and finally treating it with a phosphate coating solution, the difference in pH between the condensed-phosphate solution and the phosphate coating solution being not more than 6.5 The cleaning solution may be based on soda lye, soda, metasilicates, water glass, trisodium phosphate and orthosilicates; two aqueous solutions given by way of example contain a non-ionic emulsifying agent, sodium carbonate and sodium hydroxide together with (a) trisodium phosphate, and (b) sodium disilicate.  The condensed phosphate may be a pyrophosphate, e.g. tetrasodium pyrophosphate, or a tripolyphosphate, and the solution thereof may also contain titanium, tin or zirconium, preferably as phosphates; disodium phosphate; a wetting agent or emulsifying agent, e.g. an epoxy alcohol, amine, amide or alkyl phenol; and a flotation agent such as pine oil.  The exemplified phosphate coating solution contains zinc phosphate and nitrate. Metals which may be coated include iron, steel, aluminium, zinc and cadmium.
Patent GB-325577-A (GB)
Title: Improvements in circuit arrangements for alternating current relays with vibratory contacts
IPC: H04Q1/446
Filed: 1928-11-22
Abstract: 325,577. Standard Telephones & Cables, Ltd, and Skillman, T. S. Nov. 22, 1928. Automatic exchange systems.-In systems in which alternating-current signals such as voicefrequency impulses in a telephone system are transmitted over a long-distance line A, the local circuit LC containing the vibratory contacts X is so arranged that the voltage across the contacts cannot exceed a definite critical value. Thus, in the arrangement shown in Fig. 1, the contacts X are connected in parallel with a directcurrent relay DC and in series with a resistance R. The inductance of relay DC smoothes out current fluctuations due to variations in intensity of vibration of the contacts X. In another arrangement, the relay DC is polarized and has two opposing windings, one (of low resistance) in series with the contacts X and the other in shunt. In a third arangement, Fig. 3, contacts X are placed in one arm of a. Weatstone Bridge and the relay DC is connected across a diagonal.
Patent GB-605296-A (GB)
Title: Improvements in or relating to centrally or semi-centrally controlled electric switching systems for the control of public lighting and for other purposes
IPC: H04Q9/00
Filed: 1945-12-19
Abstract: 605,296. Switching systems. HORSTMANN, B. G., HORSTMANN, F. O., and HORSTMANN GEAR CO., Ltd. Dec. 19, 1945, No. 34423. [Class 38 (iv)] In an electric power supply system wherein a chain of electromagnetic switches controlling a number of sections of the system operate in cascade in response to a signal supplied from a control station to one of the switches at one end of the chain, the switches are arranged so that a signal can be supplied from the control station to the switch that is normally last in 'the chain, to cause the switches to operate in cascade from the last in the chain to the point in the system where a fault has occurred. Fig. 1 shows sections of the load, e.g. groups of street lamps 1, fed from supply conductors 3, 4, both ends of which are looped into a control station 2. Each switch 5, separating the sections, has a normal control winding 6 connected across the conductors 3, 4 on the side of the switch towards the beginning of the chain and upon closure of a master switch 8 in the control station closes to energize the succeeding section and the normal control winding 6 of. the switch next in the chain, the switching operations then continuing in succession to energize automatically, the whole system. Operation of all switches in the chain is indicated by a circuits normal signal 9 in the control station. Upon the occurrence of a fault, for'instance at point 100, which prevents operation of one or more of the switches, the signal 9 does not function, but an " emergency on " switch 10 in the control station, can be operated to energize the conductors 3, 4 at the end remote from the switch 8 and to energize in succession emergency control windings 7 of the unoperated switches. In Fig. 2 (not shown), each switch 5 comprises two independently operable switching members, controlled by windings 6 and 7 respectively, such that operation of either member disconnects the operating winding of the other. In further arrangements (Figs. 3 and 4, also not shown), the load sections are supplied from a feeder, the electromagnetic switch controlling the supply thereto from the main conductors. In all arrangements, the " emergency on " switch may be arranged to disconnect the circuits normal " signal when the former is operated and alternatively or in addition means 16 may be provided to indicate that that switch has been operated. The master and " emergency on" switches are preferably electromagnetically controlled by switches 17, 18 respectively which may be manually operated or controlled by time switches. The " chain " switches may be provided with delay action devices. The invention is applicable to polyphase systems.
Patent GB-374378-A (GB)
Title: Improvements in and relating to constant volume gas turbines
IPC: F02C5/12
Filed: 1931-12-11
Abstract: 374,378. Gas turbines. AKT.-GES. BROWN, BOVERI, ET CIE, Baden, Switzerland. Dec. 11, 1931, No. 34444. Convention date, Dec. 11, 1930. [Class 110 (iii).] In a combustion turbine the parts and valve openings are so proportioned that the time during which each combustion chamber discharges fluid to the wheel is equal to the time taken to displace the' residue of exhaust gas and recharge the chamber. Where two chambers 14, 15 are employed with a common nozzle 22 as shown in Fig. 5, a continuous admission of fluid to the wheel is obtained. The chambers have air inlet valves 16, 17 and fuel inlet valves 18, 19 and the mixture is ignited by means of sparking plugs 20. After combustion in the chamber 14, the nozzle valve 21 opens and compressed gas passes through the nozzle 22 to the wheel 23. The valve 25 also opens to exhaust the other chamber 15. The valves 21, 25 then close and the valves 24, 26 open so that the chamber 14 exhausts while the chamber 15 supplies compressed gas to the wheel.
Patent GB-838382-A (GB)
Title: Method of depositing continuous bituminous layers underneath an aqueous liquid
IPC: E02B3/12
Filed: 1957-11-05
Abstract: 838,382. Depositing bituminous materials under water. BATAAFSCHE PETROLEUM MAATSCHAPPIJ N. V., DE. Nov. 5, 1957 [Nov. 7, 1956], No. 34482/57. Drawings to Specification. Class 68(2) A method of depositing a dyke lining of bituminous material containing a filler of limestone or quartz in which the optimum conditions for pumping the material are calculated from the length of the line L so that the material has cooled sufficiently to prevent boiling of the water at the discharge point but is still at a sufficiently high temperature to obviate the necessity for using very high pumping pressures. These requirements are fulfilled when the rate of flow Q cubic yards per hour through the pipe is at least 12/1000 of the length of the pipe L in yards and the material is introduced into the pipe at a temperature T, not less than 120‹C., which has been calculated from the for- L mula T = Tk X e 0.006 L/Q in which Tk Q is the boiling point of the water at the discharge point.
Patent GB-195150-A (GB)
Title: A new or improved throttle valve for the induction pipe of internal combustion engines
IPC: F02M1/00
Filed: 1921-12-22
Abstract: 195,150. Pickard, W., and Dobson, D. R. Dec. 22, 1921. Closure members.-The throttle valve of a spray carburettor comprises two plates c, d adapted to slide across the induction pipe a, and operated by links e, f attached to a lever g pivoted on the induction pipe and connected by a link j to the usual hand or foot lever. The meeting edges of the plates c, d are rabbeted so as to overlap when in the closed position, and are shaped so as to produce a central orifice at the commencement of the opening movement.
Patent GB-655362-A (GB)
Title: Improvements in or relating to a method for offset or indirect printing in one or more colours
IPC: B41M1/14
Filed: 1947-12-29
Abstract: 655,362. Printing processes. KREGLEWSKI, E. Dec. 29, 1947, No. 34493. [A Specification was laid open to inspection under Sect. 91 of the Acts, Dec. 29, 1947.] [Class 100 (ii)] In simultaneous two-sided rotary offset colour printing using rubber-cloth covered cylinders a, a<SP>1</SP>, mutually serving as counterpressure cylinders, resilient printing plates are used secured to plate cylinders b, c, d, e, g and bl, c<SP>1</SP>, d<SP>1</SP>, e<SP>1</SP> arranged around intermediate cylinders m, m<SP>1</SP> at each side, from which the complete prints are transferred to the counterpressure cylinders. As shown, the separate colours are fed from inkers f on to rubber mirror-image high-relief plates fixed on the plate cylinders. The Specification as open to inspection under Sect. 91 comprises also an arrangement wherein right-image rubber plates are used on the cylinders b, c, &c. which are arranged directly round the cylinders a, a<SP>1</SP>, the cylinders m, m<SP>1</SP> being omitted. This subject-matter does not appear in the Specification as accepted.
Patent GB-171049-A (GB)
Title: Process of forming bellows
IPC: B21D51/02
Filed: 1920-12-07
Abstract: 171,049. Arbuckle, S. F. Dec. 7, 1920. Bellows.-A metal bellows is formed by stamping double blanks 11, Fig. 1, from a plate 10, folding the blanks so as to form the two sides of a bellows unit, and then oppositely folding The opposite edges of the blanks along the lines 14, Fig. 2. The corners of the blanks are soldered or otherwise secured so as to make the unit airtight. Several units are assembled with soldered rings 18, Fig. 6, between them, and the outside plates of the outer units are heated so that the units and the rings are soldered together. The units of the bellows are then bored to the diameter of the openings in the rings, and an air-tube 19 is soldered to one side of the bellows and a disc 20 carrying the actuating-mechanism is soldered to the opposite side. In a modification, the blanks are circular and their edges are folded and crimped together.
Patent GB-509983-A (GB)
Title: Apparatus for producing constrictions on hollow metal bodies
IPC: B21D41/04
Filed: 1938-11-28
Abstract: 509,983. Stamping. DEUTSCHE ROHRENWERKE AKT.-GES. Nov. 28, 1938, No. 34654. Convention date, Feb. 1. [Class 83 (iv)] A metal bottle 2 is necked-in between mandrel dies 5 and 7, the die 5 comprising radial segments pressed out to the required size by the descent of a tapered plug 4 and maintained under pressure between the stop 3 and the plug 4 while the matrix cylinder 6 descends. On withdrawal of the plug 4, spring pressed stops 8 move in horizontally to prevent the segments 5 rising with it and allow them to close up and be lifted out of the .bottle. The bottle is ejected by fluid pressure under the piston 9.
Patent GB-934123-A (GB)
Title: An electrical device for lighting cigars and cigarettes
IPC: F23Q7/00
Filed: 1961-09-28
Abstract: 934,123. Cigarette lighters. L. PRAMAGGIORE. Sept. 28, 1961 [Aug. 23, 1961], No. 34801/61. Addition to 845,151. Class 75 (3). The cigarette lighter of the parent Specification is modified in that the actuating knob 30 is pushed in, instead of being pulled out, to operate the lighter, the current to supply the heating resistance 3 is conveyed by a plug 24 situated at the back of the device and the striker 19 of the bell 2 is supported in cantilever fashion by a spring 18 engaging a movable core 14 of insulating material carrying electric contacts 15. When the knob 30 is pushed in, three pins 32 on a ring 29 carried by the knob push the movable core 14 inwardly against the action of a spring 16 and consequently the movable contacts 15 contact a hexagonal conducting block 34. When the knob is released it is returned by a spring 28 but the contacts 15 are held by the inner ends of fixed contacts 7. The resistance 3 is thus energized and the fixed contacts 7 expand and eventually release the movable contacts 15.
Patent GB-1490362-A (GB)
Title: Filtration apparatus
IPC: B01D35/00
Filed: 1975-08-06
Abstract: 1490362 Laboratory filter C J SANDERSON 6 Aug 1975 [7 Aug 1974] 34843/74 Heading B1D [Also in Division G1] Apparatus for treating liquids comprises first means 10 for receiving at least one sample to be treated, the means defining at least one sample-receiving passage 11, and second means 16 for receiving treated liquid the second means comprising at least one liquid-pervious support 19 extending across the sample-receiving passage, the first and second means 10 and 16 being adapted to be separably fitted together, the apparatus having edges capable of cutting to the shape of the support(s) a liquid treatment element such as a filter paper 27 placed between the support(s) and the sample receiving passage(s) 11 and having a surface area larger than the area of the support(s) when they are fitted together and the or each support is aligned with the sampler receiving passage(s). The apparatus may comprise a plurality of sample receiving passages in a linear or circular row, means 16 and being held together by locating pins and holes. Means 17 may be connectable to a suction line via 22. The treatment element may be a tablet of ion-exchange powder or containing absorbent powder.
Patent GB-603476-A (GB)
Title: Improvements in roller machines for the moulding of dough and other plastic substances
IPC: A21C3/02
Filed: 1945-12-22
Abstract: 603,476. Dough-rolling machines. VICARS, Ltd T. & T., and CROSLAND, E. M. Dec. 22, 1945, No. 34844. [Class 87(ii)] The scraper blade 4 is so mounted as to be rotatable about the axis of the roll 1 from the set tangential position shown in Fig. 1 to the set tangential position shown in Fig. 2, and is also rotatable about the pivot 10 counterclockwise (i.e. away from the roll 1) for cleaning purposes. In the arrangement shown in Fig. 1 the three rollers 1, 2, 3 are disposed to roll out and gauge dough webs, and the function of the blade 4 is to clean the roll 1, whereas in the arrangement shown in Fig. 2 the rollers are disposed to form the hopper of a sheeting-machine and the blade functions not only as a cleaner but as a stripper also. The blade is secured by screws 6 and clamping-plate 5 to a holder 21 having bosses 7 through which are slid screws 8. A pad 22 is disposed between the blade and the holder. The screws 8 have eyes at their upper ends which fit over pins 10 fixed on plates 11 mounted on a boss which is concentric with roll 1. The blade is adjusted to and from roll 1 by means of locking nuts 9 on the screws 8. A locking bracket 12 having a screw 14 normally secures the holder 21 to the plates 11, but may be swivelled away to allow the holder to move away from roll 1 about pins 10. The plates 11 are moved between the two positions shown by turning a shaft 17 through 180 degrees, this turning movement being transmitted to plates 11 via cranks 16 and arms 15. The shaft is turned by a slidable handle 18 which can be locked in position between lugs 20.
Patent GB-880906-A (GB)
Title: Improved method for devolatilizing polymeric compositions
IPC: B29B13/06
Filed: 1957-11-08
Abstract: Synthetic vinylidene polymers and copolymers are devolatilized from unpolymerized monomer and low molecular weight polymers, by feeding the polymer at devolatilizing temperature into a chamber having a condensing surface maintained at a temperature greater than the condensing temperature of the low molecular weight polymers under pressure, and withdrawing pure monomer vapours from the chamber; withdrawing the condensed low molecular weight polymers as a liquid from the condensing surface; and withdrawing the devolatilized polymer from the chamber.  Polymers mentioned are those derived from styrene, b -methyl styrene, vinyl toluene, mono- and dichlorostyrene and ar-dimethyl styrene, their copolymers and graft copolymers, and in an example, polystyrene containing styrene and less than 1% polymers with less than a M.W. of 300, is devolatilized in a chamber at between 100 and 150 mm. absolute and with a condensing surface at between 37 DEG  and 52 DEG  C. Suitable apparatus is described and claimed in Specification 880,907.
Patent GB-773906-A (GB)
Title: Fluid pressure dampers, particularly for braking systems
Inventor: MORTIMER FRANK RADCLIFFE
IPC: B64C25/46
Filed: 1954-12-04
Abstract: 773,906. Fluid pressure aircraft brakes. DUNLOP RUBBER CO., Ltd. Nov. 7, 1955 [Dec. 4, 1954], No. 35164/54. Class 103 (1). In order to prevent the cyclical operation of the brakes on an aircraft controlled through an inertia-anti-skid device 4 of the kind described in Specification 676,708, from setting up judder or heavy vibration of the oleo struts, an hydraulic fluid pressure damping device 6 is inserted in the fluid supply line 5. Such device, as shown in Fig. 2, comprises a cylinder 7 containing a piston 28 past which fluid can normally flow through filter disc 34 and restrictor hole 32, the central passage in tubular member 23 and a further filter disc 22. During a brake application, the piston 28 would normally be advanced against spring 20 so that substantially the entire fluted part of the plunger 37 was contained within the member 23, this position corresponding to the taking up of brake clearance. Thereafter with further movement to the right of piston 28 fluid flow would be restricted to the helical groove 41 on the plunger 37, thus damping the intermittent applications of pressure with consequent reduction in vibration.
Patent GB-1216519-A (GB)
Title: Thermoplastic yarn plasticizing device and method of plasticizing thermoplastic yarn
IPC: D02G1/16
Filed: 1968-07-25
Abstract: 1,216,519. Heating and finishing yarns. W. A. SEEM, N. J. STODDARD, F. TECCE and H. P. BERGER [trading as PERMATWIST CO.] 25 July, 1968 [26 July, 1967], No. 35464/ 68. Headings DID and D1F. In a method of continuously processing thermoplastic yarns e.g. as part of a false-twist crimping operation, perhaps in a machine for making torque-stretch yarns, yarn passes through a capillary passageway (or a series thereof) to a position along the length of which is fed a heated plasticising fluid e.g. hot air or steam, under pressure and perhaps at a temperature above the second order transition temperature of the yarn material. The fluid flows along the passageway from the position of its introduction, against capillary reaction, in contact with the yarn and without undue turbulence, finally passing outwardly through capillary "seals": if the yarn is undergoing twist (or back twist) the fluid is caused, as by "rifling" or internal contouring, to flow with helical motion in the same sense thereas. Heat may be added to the fluid e.g. by external electrical elements or a heat sink, as it passes along the passageway: thus, steam may be saturated on supply and be subsequently superheated upstream and perhaps downstream of is entry. Several stations of a yarn processing machine may be supplied with the fluid from a common source and supply pipe with main and individual valve controls.
Patent GB-994117-A (GB)
Title: Capacitance bridge
IPC: G01R17/00
Filed: 1963-09-09
Abstract: 994, 117. Measuring bridges; measuring liquid level. ROBERTSHAW CONTROLS CO. Sept. 9, 1963 [Nov. 2, 1962], No. 35534/63. Headings G1N and G1U. A capacitance bridge energizable from an A.C. source comprises first and second series circuit means in parallel and adapted for connection to the source; the first circuit means including first and second impedance arms in series each having a diode electrically oriented in the same direction with respect to the source; the second circuit means including an adjustable impedance arm to balance the bridge and a transformer connected to capacitance means variable for unbalancing the bridge and producing a D.C. output. In the Figure the unknown capacitance 19 is connected to a tap on an auto-transformer 18, the effect of which is to connect in one arm of the bridge a virtual capacitance C6 equal to the capacitance 19 times the square of the turns ratio of the transformer. Similarly a second arm of the bridge comprises standard fixed and variable capacitors 16 and 17 connected to a tap on autotransformer 15 to form a virtual capacitance C7. The other two arms of the bridge comprises equal resistances 11 and 13 and diodes 12 and 14. The bridge is energized by transformer 3 from a 500 kcs/sec. oscillator 1 and out-of-balance current is integrated by capacitor 30 and measured by a meter 26, the reading of which can be adjusted by a potentiometer 28. Capacitance 19 may indicate the level of material in a tank. The taps on transformers 18 and 15 are selected to give a desired range of variation, e.g. the difference between capacity 19 when the tank is full and when it is empty, and the bridge is balanced with an empty tank by means of capacitor C17. Switch 20 is then operated to connect in place of capacitance 19 a variable memory capacitance 24 which is adjusted to restore the balance of the bridge. With the tank full, potentiometer 28 is adjusted to give full scale deflection of the meter 26; if this is not possible, the taps on transformers 15 and 18 are altered, the zero is re-set using capacitance 24 to represent an empty tank, and potentiometer 28 is again adjusted to give full scale deflection of meter 26 with a full tank connected in the bridge circuit.