baber/WOPTO huggingface dataset:
Patent GB-1381338-A (GB)
Title: Signal receivers
IPC: H04L27/18
Filed: 1972-05-12
Abstract: 1381338 Digital transmission; phase modulation POST OFFICE 13 April 1973 [12 May 1972] 22338/72 Addition to 1368068 Heading H4P In an arrangement as disclosed in Specification 1,368,068, in which a diphase to base band converter comprises means for delivering a clock signal from a carrier modulated by isochronous base band data, the clock and carrier having a determined phase relation, a mod-2 adder is provided to receive the diphase signal and clock on its inputs the output being connected to a circuit regenerating the base band data signal. A receiver is described in connection with Fig. 3 (not shown). Ambiguity may be detected by an arrangement comprising a frequency divider 19 providing clock signals through 180 degrees phase change circuit 33 controlled by signals received on line 36 or 37. The output passes through a T/4 delay 32, where T= clock period, normal to AND 30 and inverted to AND 31. A circuit 29 produces narrow pulses corresponding to transitions of the restituted signal on line 50 which are fed to ANDs 30, 31. AND 30 produces output pulses on error detection which are counted by 34 reset by a "correct" pulse from AND 31. At a count of 6, switch 35 is reversed causing reversal of phase output from 33. It is stated that line equalizers may be dispensed or modified equalizers used in the arrangement disclosed.
Patent GB-844645-A (GB)
Title: Improvements in or relating to heat exchangers
IPC: F28F1/32
Filed: 1957-07-15
Abstract: 844,645. Tubular heat exchangers. LICENCIA TALALMANIJOKAT ERTEKESITO VALLALAT. July 15, 1957 [July 13, 1956], No. 22402/57. Class 64(3) In a heat exchanger tube bank consisting of adjacent groups of tubes wherein the internal fluid flows in opposite directions through neighbouring tube groups 6, 7 and wherein transverse fins 2 provide thermally conductive connections between the tubes of the bank, at least the fin portions extending between such tube groups have incisions formed therein for interrupting the thermally conductive connections and hence preventing heat flow between these tubes through the fins. The fins may be subdivided by slitting, into narrow strips 5 in the manner indicated and some of these strips may be extended as shown at 4 to constitute the aforementioned incisions, or separate incisions may be provided as shown at 3. In a further form decribed (Fig. 7, not shown), in which the fins are again divided into narrow strips, the tubes of neighbouring groups are relatively staggered and those slits located between such tube groups constitute the incisions.
Patent GB-1340652-A (GB)
Title: Sewing device for the making of piped openings in particular of pocket slits in outer garments
IPC: D05B3/10
Filed: 1972-05-12
Abstract: 1340652 Sewing machines DURKOPPWERKE GmbH 12 May 1972 [21 June 1971] 22413/72 Heading D1G A sewing apparatus (Fig. 3) moves a workpiece through a twin needle sewing machine using a clamp 9, cuts a slit for a pocket using a knife 4 while sewing on reinforcing material b, then cuts two further angled slits i2 h2 at each end of the first slit using cutters 32, 33. The cutters have adjustable knives and the sewing machine has two needle bars which start and stop independently to ensure that the ends of the seams e2, f2 lie on parallel lines X, Y when making slanted pockets. The workpiece e.g. a jacket, is placed on the table. 5, the clamp 9 is lowered on to it, and the reinforcing material is placed on the clamp 9 by bars 25 and 27, and guided by rails 24 and 23 as the clamp moves the workpiece through the machine. The clamp is attached by arms 91 to a carriage 90 which moves along the spindle 8 when the pulley 7 on the spindle is driven by the sewing machine motor. After sewing, the two cutters 32, 33 are raised to cut the end slits. Each cutter 32, 33 has two blades 34 pivoted near their upper ends at 36, on a wedge shaped pin 35. When one blade is set forward and the other back they can cut slits of different lengths and at different angles to the main slit d2. The bottom end of each blade fits in a slide 37 which is attached to a triangular lever 39 rotatable about a vertical axis 391. In operation a lever 52 is rotated anticlockwise about a pin 56 by one of three pneumatic pistons 61, 62, 63. A slide 53 carrying a pin 532 may now be moved sideways by a piston 50 until the pin 352 abuts one side of the V- shaped notch 531 in lever 52. A lever 59 carrying a pin 60 which fits into a slit 531 is thus rotated about a bar 57, causing a lever 411 to move a rail 41 sideways. This rail grasps each rod 40 attached to the triangular lever 39 and moves it sideways, so rotating the triangular lever and sliding the lower ends of the knives forward or back respectively.
Patent GB-500437-A (GB)
Title: Improvements in or relating to the fuel supply of motor vehicles
IPC: B60K15/04
Filed: 1937-08-16
Abstract: 500,437. Fuel tanks with main and reserve supply. DYCKHOFF, M. Aug. 16, 1937, No. 22458. [Class 21] The communication of the reserve fuel supply of a motor vehicle with the carburetter is controlled by a a rod A carrying at its upper end a handle A which, when turned so that the reserve supply communicates with the engine, engages a gap c<1> in the cover C<1> of the filling tube B of the main fuel supply, so that the cover cannot be rotated for removal for refilling until handle A<1> is turned to close the feed from the reserve supply. Handle A<1> is released by slightly rotating cap C<1> when a spring or rod A rotates this rod to close the valve. The spring may be omitted.
Patent GB-1321142-A (GB)
Title: Device for grouping objects for an encasing-uncasing machine
IPC: B65B21/06
Filed: 1971-04-19
Abstract: 1321142 Spacing bottles on endless conveyers E P REMY & CIE 19 April 1971 [3 June 1970] 22520/71 Heading B8A A device for grouping objects such as bottles, for use in conjunction with gripping heads 11 (moving at a speed V) of an encasing or uncasing machine, has an endless conveyer 21 (moving at a speed V 1 , which is greater than V), a guiding device 30 and a selecting means such as the device 40a or 40b. The guiding device 30 moves at the same speed V as the gripping heads 11 and the selecting means at a speed v which is less than V 1  (the speed of conveyer 21) and related to  the speed V of the heads 11 and device 30 according to the formula v=V l#L, where L is the pitch of stops 33 of the device 30 and equally the pitch of the gripping heads 11, and l is the pitch of stops 43a of the selecting means. Where D = the diameter of a bottle, and the pitch of the selecting device 40a = la, the device 40a, which acts as a brake on the flow of bottles, will select groups of n bottles, n being chosen as an integer and equal to la/D. The device 40b has different dimensions allowing for different diameter bottles. The conveyer 21 consists of three separate elements (22), Fig. 3 (not shown), which are positioned in accordance with the rows of gripping members on the gripping heads. The elements consist of blade members (220) mounted on rails (221), Fig. 5 (not shown). The positioning is by means of a bar (26) having flat portions (26a, 26b) and the elements are locked in position by a second bar (27), Fig. 3 (not shown). The stops 33 are detachably and rotatably mounted on an axle 301 attached to chains 31, and are attached to a rod 305 through a forked member 302. The driving shaft 35a is driven through a mechanism (310), Fig. 10 (not shown), which allows the position of the chains 31 to be adjusted relative to the driving pinion (311).
Patent GB-295279-A (GB)
IPC: B63H23/00
Filed: 1928-08-03
Abstract: 295,279. Akt.-Ges. Brown, Boveri, et Cie. Aug. 8, 1927, [Convention date]. Driving arrangements for screw propellers.-In installations wherein the propeller shaft is driven directly by a reciprocating engine and indirectly by an exhaust turbine through an electric transmission consisting of a generator driven by the turbine and a motor mounted on the propeller shaft, reversal of the reciprocating engine and motor are effected by the controlling gear of the engine. The reciprocating engine K drives a propeller shaft P on which is mounted a motor M whose generator G is driven by an exhaust steam turbine T. The engine reversing lever U also controls the double pole switches S1, S2 connecting the motor and generator through brushes movable over sliding contacts of an auxiliary circuit. This circuit is normally kept open by a switch controlled by a governor on the propeller shaft, but closes 'when the shaft revolutions are nearly zero.
Patent GB-658361-A (GB)
Title: Primary batteries
IPC: H01M16/00
Filed: 1949-08-30
Abstract: 658,361. Supply systems depending on two sources. COMPAGNIE INDUSTRIELLE DES PILES ELECTRIQUES C.I.P.E.L. Aug. 30, 1949, No. 22537. [Class 38 (iv)] [Also in Group XXXVI] A battery N of a type having an alkaline electrolyte is connected in parallel with a battery P having an electrolyte of sal ammoniac, the load U being connected to the battery P which has a lower E.M.F. than the battery N. A resistance R may be inserted between the two batteries. It is stated that a continuous small current is supplied to the load from the battery N, occasional large currents being drawn from the battery P.
Patent GB-499943-A (GB)
Title: Improvements in cycle lamp and dynamo brackets
IPC: B62J6/06
Filed: 1938-07-29
Abstract: 499,943. Looking cycle wheels and lighting equipment to prevent theft. HOESSLE, A. July 29, 1938, No. 22567. [Glasses 79 (iii) and 136 (i)] [Also in Groups XI, XXV, and XXXV] A bracket 9 for a cycle dynamo 10 is clamped on the cycle by means of screws 5 having a rounded head 6 with a profiled recess 7 for receiving a correspondingly shaped wrench, and an additional screw 12 is provided in an offset extension 21 of the bracket to project between spokes 17 for locking the cycle. The screw 12 extends through a washer 13 and a stirrup-shaped spring 14, the free end of which moves along the screw thread to engage a reduced part 16 when the screw is retracted from the path of the spokes.
Patent GB-935779-A (GB)
Title: Improvements in or relating to internal combustion engines
Inventor: FELLER FRITZ
IPC: F02B75/18
Filed: 1961-06-22
Abstract: 935,779. Regulating carburetter arrangement. ROLLS-ROYCE Ltd. April 24, 1962 [June 22, 1961], No. 22571/61. Classes 7(2), 7(3) and 7(6). In a multi-cylinder engine having at least two carburetters 14, 16, Fig. 1, a valve 30 is provided in the induction manifold 12 between the carburetters to enable mixing of the fuel/air mixtures issuing from the carburetters to be selectively varied, the valve being incapable of isolating the fuel mixtures completely from each other. The butterfly valve 30 has a spindle 36, Fig. 2, carrying member 32, housed in an enlarged section 34 of induction manifold 12, and is actuated by a link 42. At engine speeds below a predetermined figure, valve 30 remains in the position shown in Fig. 2 to permit communication between the two portions of the manifold through restricted opening 44 and restricted openings at the sides and top of the valve member 32. At speeds higher than the predetermined speed, valve member 32 is moved through 90 degrees to permit substantially complete communication between the two portions of the manifold. In apparatus for effecting valve movement the voltage produced by a tacho-generator G, Fig. 4, causes current from battery B to flow to a solenoid S, which operates link 42, through the transistor TR 1  whilst simultaneously a micro-switch MS is closed by the engine throttle pedal. Resistance R 2  and diode D prevent damage to the transistor TR 2  by reverse current from the solenoid when the current is switched off. In a modification, an engine driven centrifugal switch closes at a predetermined speed to allow a battery to energise a link-operating solenoid or in the circuit of Fig. 4 the micro-switch MS can be omitted and the solenoid S actuated solely by the voltage produced by the tacho-generator. In an alternative arrangement valve 30 may be operated by a mechanical linkage from the engine throttle control member or from an engine driven mechanical governor. In further alternative arrangements valve 30 is actuated by a hydraulic piston or by the vacuum existing in a carburetter.
Patent GB-281784-A (GB)
Title: Improvements in wireless receivers
IPC: H03F3/48
Filed: 1926-09-13
Abstract: 281,784. Pitcher, A. E. Sept. 13, 1926. Thermionic amplifiers and detectors. - In a reflex set, radio and audio frequency chokes 11 - - 16 are inserted in series in one branch of the plate circuit of each valve, whilst a second parallel branch circuit is directly coupled to the grid of the next valve. As shown in Fig. 1, valves 1 and 2 act as high-frequency amplifiers in the first instance, being connected in cascade through coupling condensers and transformers 18, 19 and 20, 21 respectively. Valve 3 is an anode current rectifier, the resultant low frequency potentials from the choke 16 being fed back to the grid of the first valve through a condenser 22. The low-frequency coupling from valve 1 to valve 2 is through a condenser 23, whilst a condenser 24 in the plate of that valve feeds the telephones. The order of feeding back the low frequencies may be varied. Grid bias is applied to valves 1 and 2 through resistances 8 and a battery 9 connected between the lower ends of the tuned input circuits 4, 5 and earth in shunt with bypass condensers 25; in the case of valve 3 the grid is connected to a potentiometer 10. Reaction is applied to the rectifier valve through coil 31 and condenser 32. Transformer coupling may be used on the lowfrequency as well as the high-frequency side. Fig. 3 shows a modified arrangement in which the moving plates of the tuning-condensers of circuits 4 and 5 are directly earthed to prevent hand-capacity effects.
Patent GB-914467-A (GB)
Title: Improvements in and relating to power circuit breakers with electrical resistors
IPC: H01H33/16
Filed: 1960-06-29
Abstract: 914,467. Arc-rupturing in switches. BROWN, BOVERI & CIE A.G. June 29, 1960 [June 30, 1959], No. 22732/60. Class 38 (5). [Also in Group XL (b)] In a circuit-breaker comprising a power interrupter and a seriesdisconnecting switch 5, a photo-sensitive resistor connected in parallel with the interrupter contacts 2 has its resistance value reduced directly or indirectly in response to the light radiation of the arc drawn between the contacts 2 when opened. Thus the arc is shunted by a low resistance which persists for a short interval to reduce the rate of rise of the recovery voltage. After the arc has been extinguished, the resistor reverts to its high - resistance value to reduce the residual current before the disconnecting switch is opened. In Fig. 1 the resistor 1 is housed in the interrupter chamber 3 so as to be directly exposed to the light radiation of the arc, the resistor being protected by a transparent tube 4. In Fig. 2, a photoelectric cell 6 in the chamber 3 produces a voltage when subjected to the light radiation of the arc. This voltage controls an amplifier 7 which supplies a light source 8 acting on the resistor 9. The resistor is of a light-sensitive single or multi-crystalline semi-conductor material such as silicon.
Patent GB-1130233-A (GB)
Title: Priority assigning circuits
IPC: G06F13/364
Filed: 1966-05-23
Abstract: 1,130,233. Priority circuits. INTERNATIONAL BUSINESS MACHINES CORP. 23 May, 1966 [9 June, 1965], No. 22826/66. Heading G4A. The invention is a priority assigning tree circuit having two arrays of priority assigning modules. In the module of Fig. 1, provided module go-ahead line GB1 is energized, the leftmost one of demand lines A1, A2 . . . which is energized causes energization of a respective go-ahead line GA1, GA2 . . . by a corresponding AND gate 101, 102 . . . the leftmost energized demand line blocking all AND gates to the right simultaneously via a respective inverter 107, 108 . . . The demand signals are ORed at 106 to feed a module demand line B1. Other similar modules using ORINVERT and AND-INVERT gates to give demand and/or go-ahead signals in inverse form are described. In a tree of modules, each as above, the module demand and module goahead lines of the modules in one level of the tree are connected to demand and go-ahead lines of the module or modules of the next higher level. The module demand and module go-ahead lines of the (only) module of the topmost level are connected together. The invention may be used for accepting computer input/output demands or interrupt demands according to a predetermined priority, or as a leftmost-1 circuit for zero suppression, or for directing incoming words to vacant registers in an associative memory.
Patent GB-771967-A (GB)
Title: Improvements in or relating to devices for sharpening twist drills
IPC: B24B3/24
Filed: 1954-08-05
Abstract: 771,967. Sharpening twist drills. GUHRING. O., GUHRING, A., and GUHRING, M., [trading as GUHRING, G.]. Aug. 5, 1954 [Aug. 25, 1953], No. 22834/54. Addition to 720,976. Class 60  In apparatus for grinding twist drills as in the parent Specification, the pin 7, Fig. 1, about which the drill holder swivels is carried by a member 6 mounted on a pin 5 and having depending limbs 29, 28 alternatively contacting a surface 32 so as to give one or other of two predetermined inclinations of the pin 7 to the face of the grinding wheel 3, e.g. 13 degrees (giving a drill point angle of 116 degrees) and 20 degrees (giving a drill point angle of 130 degrees). In the first position, i.e. with .limb 29 operative, the front carrier 14 is adjustable on a plane parallel to the face of the grinding wheel 3; adjustment of the front and rear carriers 14, 19 is effected as in the prior Specification. The adjusting screws 14a, 19a may be replaced by quick adjustment devices comprising discs 53, 59, Fig. 6, supported by the carriers and having notches 54, 54 co-operating with pins 50, 57 on the member 11 and on block 56; the carriers are locked in adjusted position by wing nuts 55, 60; the discs are held in any desired position by frictional engagement but may easily be adjusted to different positions. The pin 5 projects for both sides of an extension 10 of a slide 4<SP>1</SP> mounted on bars 9, 9 carried by a slide 4 adjustable in a plane parallel to the face of the grinding wheel; the member 6 is placed on the projecting pin 5 on one side or the other of the extension 10 according to whether the drill is right-handed or lefthanded and is clamped thereon by a nut 34 or 35. For the second position the slide 4<SP>1</SP> is moved away from the grinding wheel against an adjusting device 33 and the member 6 tilted forwardly until the limb 28 is operative. The slide 4<SP>1</SP> is moved on the bars by a screw spindle 38 having a handwheel 39. A cross member 40. Fig. 5, slidable on the bars 9 and clamped in adjusted position thereon by screws 41 comprises a bar 42 freely movable in a bore 36 in the slide 4<SP>1</SP>; the bar carries three graduations 43. The cross member 40 also comprises a diagonal guide having a scale 45; a slider 46 is adjustably mounted on the cross member, and is secured in adjusted position by screw 48 engaging a slot 47. In use, the member 40 is adjusted until a desired mark 43 (corresponding to one of three ranges of drill sizes) on the bar 42 registers with the rear edge of the slide 4<SP>1</SP>; the slider 46 is then adjusted so that a mark 49 thereon registers with a graduation on the scale 45 corresponding to the drill diameter, and the slide 4<SP>1</SP> is retracted by operation of the handwheel 39 until its rear edge abuts the slider 46.
Patent GB-771695-A (GB)
Title: A process for the electrodeposition of iron-chromium alloy
IPC: C25D3/56
Filed: 1954-08-05
Abstract: 771,695. Electrodeposition of iron-chromium alloys. YOSHIDA, T. Aug. 5, 1954, No. 22845/54. Class 41. Iron-chromium alloys are deposited by electrolysis of an aqueous bath having a ratio by weight of trivalent chromium to divalent iron greater than 1.3 and containing per litre 10-63 gms. trivalent chromium, 5-40 gms. divalent iron, and 100-264 gms. of urea, and an amount of sulphate radical at least stoichiometrically equivalent to the total content of trivalent chromium and divalent iron, the bath having been brought to equilibrium as regards complex ions by keeping it at a constant temperature between 25‹ and 55‹ C., the time for attaining equilibrium ranging correspondingly from 270 to 8 hours. For a practical process, additional sulphate and chloride ions are added to increase the bath conductivity and to speed up anode dissolution. Typically the bath contains per litre 160 gms. chromium sulphate, 60 gms. ferrous sulphate, 200 gms. ammonium sulphate, 180 gms. urea, and 10 gms. ammonium chloride and was employed at 40‹ C. after having beeen held at this temperature for 50 hours, using as anode an iron-chromium alloy containing 18 per cent chromium at a cathode current density of 15 amps./sq. dm. to deposit an alloy containing 21 per cent chromium. Specification 715,225 is referred to.
Patent GB-1148486-A (GB)
Title: Derivatives of oligomers of tetrafluoroethylene and hexafluoropropene
Inventor: FIELDING HAROLD CROSBIE
IPC: D06M13/322
Filed: 1966-05-23
Abstract: 1,148,486. Fluorinated nitrogen-containing oligomers. IMPERIAL CHEMICAL INDUSTRIES Ltd. 5 May, 1967 [23 May, 1966], No. 22866/66. Heading C2C. [Also in Divisions B2, C3 and D1] Oligomer derivatives of the formulµ Q-NR 1 R 2  or Q = N-R;, wherein Q is a residue of a branched internally-unsaturated tetrafluoroethylene or hexafluoropropylene oligomer after one or two fluorine atoms have been removed and R 1  and R 2  are alkyl, aryl, substituted alkyl or substituted aryl groups or R 1  is a hydrogen atom or R 1  and R 2  together complete a heterocyclic ring, are prepared by reacting the above oligomers with the appropriate primary or secondary amines. If desired, compounds within the above formulµ may be interconverted, e.g. by acylation of a hydroxy group or quaternization of an amino group. Some of the compounds have surface-active properties and are useful as cationic, anionic or non-ionic detergents.
Patent GB-885640-A (GB)
Title: Improvements in electrical indicating or/and control systems
Inventor: COWLIN PHILIP
IPC: G05D23/22
Filed: 1957-07-19
Abstract: 885,640. Automatic temperature control systems. BAILEY METERS & CONTROLS Ltd. July 21, 1958 [July 19, 1957], No. 22990/57. Class 38 (4). [Also in Group XL (c)] A variable amplitude D.C. signal from a measuring device is converted by a transistor circuit into a variable-amplitude square-wave signal which sets a relay to one state or the other according to whether the amplitude is above or below a predetermined value, the magnitude of the D.C. signal corresponding to the predetermined value being so chosen that the output of the transistor circuit is independent of transistor temperature. In a temperaturecontrol system, Fig. 1, a direct voltage proportional to the temperature is derived from a thermocouple 15 and opposed to a reference voltage determined by the setting of a potentiometer 23. A resistor 21 having the same temperature response as the thermocouple cold junction provides ambient temperature compensation. The resultant voltage Vin is chopped by a shunt-connected transistor 13 which is periodically rendered conductive by a further transistor 8 having a fixed alternating voltage input. A square-wave signal having an amplitude dependent on temperature is thus produced and applied to a three-stage transistor amplifier 26 the output of which changes the state of an on-off temperature-controlling transistor-operated relay 34 when the temperature has a predetermined value. The voltage Vin is arranged to have such a value at the predetermined temperature that the squarewave output signal produced is independent of the temperature of transistor 13.