baber/WOPTO huggingface dataset:
Patent GB-807888-A (GB)
Title: Curie point device for electrical temperature control
IPC: G05D23/26
Filed: 1956-08-07
Abstract: 807,888. Automatic temperature control systems. FOXBORO CO. Aug. 7, 1956 [Aug. 4, 1955], No. 24196/56. Class 38 (4). Temperature control of an oven is effected by utilizing the fall in magnetic permeability at the Curie point of a core of appropriate metal or alloy of a coil-core combination to reduce the heating of a resistor in the same A.C. circuit as the coil. In Fig. 2 the fall in impedance of coil 10 with core 11 forming part of potentiometer 10-11, 14 reduces the voltage across heating resistor 12; alternatively the coil may form part of a parallel or series-tuned circuit in resonance below the Curie point but which is detuned above this point to reduce the voltage or current available to the heating resistor. Fig. 10 shows a transformer 40 the coupling of which falls off at the Curie point to reduce the power delivered to resistor 41. Examples of metals and alloys suitable for core materials for different temperatures are given.
Patent GB-165872-A (GB)
Title: Improved inking arrangements for typewriters and like machines
IPC: B41J31/14
Filed: 1919-03-03
Abstract: 165,872. Harrington, F. C. A. March 3, 1919. No Patent granted (Sealing fee not paid). Ink-ribbon mechanism.-In machines having pad inking-arrangements and an ink-ribbon for use in colour-typing, the ribbon is mounted on spools, arranged on a frame which can be moved to bring the ribbon into or out of the path of the types, the distance between the spools being considerably less than the length of the platen. As shown in Figs. 8 and 10, the ribbon passes between closely adjacent spools k supported on arms h which are pivoted on a rod j on the shift-carriage or the base of the machine, the arms being moved by hand or by a key into the position shown in dotted lines in Fig. 8 when the ribbon is employed. The arms are formed with spindles h' for receiving the spools, the spindles being connected to a frame h<3> formed with guides h<4> for the ribbon; or the guides may be attached directly to the arms h. Adjustable stops or springs limit the movement of the arms h. Each spool k is supported by a shoulder h<2>, Fig. 11, on the spindle h<1> and is secured by means of a dog m which is pivoted on the spindle and is engaged by a spring n<2> on a washer n, formed on the bottom with projections for engaging recesses in the end flanges q of the spool. The arrangement normally prevents the spool from rotating, but permits of the spool being rotated manually, when it is desired to feed the ribbon. To prevent the types, from transferring ink from the pad to the ribbon, a protecting- strip is rolled up with the ribbon; or, the ribbon may pass in front of a stationary shield consisting of a strip of material which is attached by loops to the ribbon guides. The ribbon may consist of lengths of different colours, the required length being brought into position by rotating the spools. Pad inking-arrangements.-The inking-pad a, Figs. 2 and 5, is arranged in a tin or carrier b which is detachably mounted in a holder d. attached to uprights e struck up from the base plate of the machine. The uprights may be formed with ribs or flanges. The holder is formed at the front with a flange d<1> and the tin is formed with side and end flanges b<1> and a finger-piece b<2>. The carrier is formed at the end with lugs d<2> which are permanently or detachablv secured to the uprights e, and the tin is formed at the ends with lugs b<3> for engaging detachable fastenings. As shown in Figs. 5, the uprights may be formed with a lug e<1> for supporting the carrier d, and with a fastening-tongue e<2> for engaging notches in the lugs d<2>, b<3>. To permit of removal of the tin without detaching the carrier, the notches in the lugs d<2> may be made deeper than the notches in the lugs b<3>. In a modification, the lugs b<3> on the tin are formed with slots which pass over spring pins or the like on the supports. The types normally rest on the pad.
Patent GB-832340-A (GB)
Title: Improvements in and relating to inertial guidance of ballistic missiles
Inventor: SCORGIE GUY CRAIG
IPC: G06G7/78
Filed: 1954-08-20
Abstract: 832,340. Automatic steering control systems. ENGLISH ELECTRIC CO. Ltd. Aug. 19, 1955 [Aug. 20, 1954], No. 24374/54. Class 38 (4). In a long-range guided missile the control signals are the resultant of recorded information representing the required path and information given by an accelerometer system. The difference between the gravity effect at the actual position and at the predicted position is corrected for. Both the direction and speed of travel are controlled. In Fig. 1, a function representing the required and actual positions is derived in a Carterian co-ordinate system while in Fig. 2 (not shown), spherical co-ordinates are used. Damping is effected by the application of first differential signals to the control system, Fig. 3 (not shown). In the first embodiment, Fig. 1, the missile control unit, 17, is energized by electrical signals, representing both the actual acceleration, from unit 10, and the required or predicted acceleration, from unit 11, which are applied to the integrating units 15, 16 to produce signals corresponding to the missile displacement errors. Gravitation difference signals are injected into the system at 13 from the unit 14 which is supplied by predicted gravitational field gradient signals, from 18, and displacement feed-back signals from 17. In the second embodiment, Fig. 2 (not shown), the application of the actual and predicted accelerations to the control unit is identical with that of the first embodiment but the system effecting the gravitational correction employs a spherical co-ord. system. In a third embodiment, Fig. 3 (not shown), the system is similar to that of Fig. 1, except that integration is carried out at the acceleration detector and prediction unit and in addition damping signals representing the first differential of the missile displacement are applied to the control unit. Specifications 817,672 and 817,673 are referred to.
Patent GB-891968-A (GB)
Title: Improvements in changing signs
IPC: G09F9/30
Filed: 1958-07-30
Abstract: 891,968. Changing signs. ELVESTROM, V. July 30, 1958 [Aug. 30, 1957], No. 24486/58. Class 3(1). An illuminated display panel or transparency 11 is provided with three separate scenes 13, 15, 17 and is masked by a reciprocating slide 19 having apertures 23. The panel may be subdivided into a series of wave-like strips or incorporate a herring- bone configuration, see Figs. 3 and 4 (not shown) Again, the representation may be in the form of dots or circular areas in which case the mask may have an orbital movement imparted to it by a worm and worm-wheel drive, see Figs. 6 and 7 (not shown). Finally the mask can be reciprocated in a horizontal or a vertical direction, see Figs. 8-10 (not shown).
Patent GB-1211180-A (GB)
Title: Linear displacement of machine members
IPC: B23Q1/58
Filed: 1969-05-14
Abstract: 1,211,180. Actuating sliding carriages; milling machines. FRIEDRICH DECKEL PRAZISIONS MECHANIK & MASCHINENBAU. 14 May, 1969 [4 June, 1968], No. 24704/69. Headings B3B and B3K. [Also in Division F2] Mechanism for displacing one machine tool member relative to another e.g. for displacing slide 16 relative to slide 12 in a universal milling machine as shown, comprises an endless chain drive 20 mounted on one of the members with one run parallel to the direction of displacement, one or more entraining elements 32 being mounted on one or the other member to establish a drive connection. Sprockets 22, 24 have one tooth machined off to accommodate the teeth 34 of the elements 32.
Patent GB-825985-A (GB)
Title: Improvements in pilot burner and thermocouple therefor
Inventor: JACKSON WILBER FRED
IPC: F23Q9/00
Filed: 1957-08-06
Abstract: 825,985. Pilot burners. ROBERTSHAWFULTON CONTROLS CO. Aug. 6, 1957 [Dec. 5, 1956], No. 24764/57. Classes 75(1) and 75(3) [Also in Group XXXVI] A combined pilot burner and thermocouple c o m - prises a tube 24 having at one end a gas outlet 32, a fitting 48 including a pair of spaced flame retainers 50, 52 engaging the outlet end of the tube 24 and a thermocouple c o m - prising a first element 28 and a second element 35 joined at their upper ends to form a hot thermojunction 36, the tube 24 surrounding the thermocouple elements and having its gas outlet 32 adjacent the hot thermojunction 36. The thermocouple element 28 is tubular and is mounted in the lower end of a bore 22 in the burner casing 10. The other thermocouple element 35 is a rod disposed within the tubular thermocouple element 28 and insulated therefrom by a sleeve 37 of fibreglass. The lower ends of the thermocouple elements are connected to inner and outer conductors in a cable 38. The fitting 48 is welded to the upper end of the thermocouple element 28 and includes three radially spaced supports 56 separating the flanges 50, 52 and defining a space 58 above the gas outlet 32. The gas tube 24 is secured to the upper end of the bore 22 in the casing 10 and is supplied with gas through a passage 20 and a nipple 14. In operation a flame is maintained at the periphery of the upper flange 50 and the heat therefrom is conducted to the hot thermojunction 36.
Patent GB-896502-A (GB)
Title: Improvements in or relating to steam power installations including forced-flow, once-through, boilers
IPC: F22B35/10
Filed: 1958-07-31
Abstract: 896,502. Controlling forced-flow steam boilers. SIEMENS-SCHUCKERTWERKE A.G. July 31, 1958 [July 31, 1957(2); Nov. 16, 1957], No. 24776/58. Class 123(2) In a forced-flow, once-through steam generator comprising a feedwater pump 2 supplying water through an external high pressure preheater 3 to a preheater 4 whence it flows through and is evaporated in tube sections 6, 7, the steam being superheated in sections 8, 9, 10 and passing through a stop valve 12 to a turbine 11, the rate of flow of feed supply is controlled to correspond with the rate of steam output whilst the rate of firing of the boiler is separately controlled according to other variables such as steam pressure at the boiler outlet or at a point between the superheaters. As shown in Fig. 1, flow-measuring constrictions M 1 , M 4  are situated at points 27, 28 and give rise to signals M 1 1, M 4 1 which are compared in a device 30. The output signal from this device, corrected by temperature-dependent signals taken from points 32, 33, which signals are increased as the flow measured at point 34 and represented by a signal M 2 1 increases and vice versa, is passed to the feed pump 2 through a line 31, the signal being effective to increase or decrease the pump speed to bring the signals M 1 , M 4  into correspondence. Steam temperature is maintained constant by automatic interstage water injection at points 36, 37 in dependence on temperature indications at points T 4 , T 5 , T 6 . The furnace chamber shown at 16 receives fuel from a distributer 15 and air from a compressor 18 and discharges gases along a path 19 terminating in an induced draught fan 20. The firing rate is controlled according to signals L 1 , L 2  representative of turbine speed and steam pressure respectively measured at the speed control device 23 of the turbine and at a point 26 at the outlet of the final superheater 10. The distributer 15 is additionally controlled according to the oxygen content of the gases entering the fan 20. In a modification, the steam pressure is measured between the superheaters 9, 10 or 8, 9. In a further modification, the interstage water injection is controlled by superheater temperature and by the throughflow of steam or the rate of flow of feedwater to the preheater 4.
Patent GB-864135-A (GB)
Title: A silica powder and a process for its production
IPC: C09C1/30
Filed: 1958-08-01
Abstract: Compacted silica powder having a density above 15 lbs./cu. ft and size less than 150 mesh is produced by heating a mixture of water and precipitated silica having an average ultimate particle size below 0.05 micron to evaporate water and form agglomerates, grinding the agglomerates to less than 150 mesh, and compacting the ground material to at least 15 lbs./cu. ft. bulk density.  An aqueous slurry of precipitated silica is used, where the silica contains more than 85% SiO2, 3-14 moles bound water/mole SiO2, and 10-15% free water, has surface area 50-300 sq. m./gm., and may contain 1 mole alkaline earth metal, zinc, magnesium, or aluminium oxide per 10-150 moles SiO2.  The aqueous slurry may have previously dried or partially dried SiO2 added during drying, which is carried out at 100-800 DEG C., and may be accompanied by tumbling, until the product contains 10-15% free water.  The dried SiO2 is cooled below 50 DEG C. ground to pass, e.g. 325 mesh.  The ground SiO2 is compacted: (i) by pressing in a mould; (ii) by pouring into a paper bag, reinforced with cardboard, in a mould and compressing under 140-150 lbs./sq. in., with further amounts of SiO2 being added as necessary to fill the bag; (iii) by pressing into the container for transport; or (iv) by passage between a pair of rolls coated with natural or synthetic rubber having a Durometer hardness 20-80.  The compacted SiO2 is readily broken up to powder which is readily dispersible in natural, or synthetic rubbers, of which a number are specified. Specifications 756,857 and 756,877 are referred to.
Patent GB-351311-A (GB)
Title: Apparatus for indicating deferred signals
IPC: B61L17/02
Filed: 1930-08-19
Abstract: 351,311. Electric signalling systems. SOC. D'EQUIPEMENT DES VOIES FERR•ES ET DES GRANDS R•SEAUX ELECTRIQUES, 18, Rue de Tilsitt, Paris. Aug. 19, 1930, No. 24820. Convention date, April 25. [Class 40 (i).] In a signalling system for routing wagons on sidings, the route of a wagon is shewn on either indicator B or T, Fig. 1, the indication being controlled by the control board A which stores 3 indications and is released by the passage of the wagon over the track. The pilot lamps Al, A2, A3 indicate the next control row to be used and the relative key in this row is depressed and locks down. The corresponding lamp V1 .. V4 is illuminated on B whilst the number of the track is shown on T and this indication remains until the wagon has entered the track section. When a key, say B1<1>, is depressed, Fig. 2, the bar c locks the key down, potential is connected to wire I (R1, 8, 9, 10) to control the indicators and relay g1 energizes and locks, extinguishing A1 and energizing A2 to indicate to the operator the next row of keys to be used. Further indications may be stored in the other two rows. When the first wagon passes the track section, V de-energizes, R1 steps R on to contacts 2, g1 releases and f1 energizes to release key B1<1> and the first row of keys. The indicators may be controlled over banks of a step-by-step switch which hunts for the marked wire.
Patent GB-263940-A (GB)
Title: Improvements in and connected with dynamo electric machines
IPC: H02K47/06
Filed: 1925-10-06
Abstract: 263,940. English Electric Co., Ltd., Wilson, J. C., and Howard, J. W. Oct. 6,1925. Synchronizing dynamo-electric machines. -A dynamo-electric group comprises a polyphase asynchronous machine cascaded with a polyphase synchronous machine the secondary element of the asynchronous machine having a winding so formed and its connections thereon so disposed that it produces an asymmetrical electromagnetic effect when used with a balanced polyphase starting device and a symmetrical effect when connected for normal running. As shown, Fig. 2, tappings from the rotor winding of the asynchronous machine are taken from phases which are not uniformly spaced and are connected to slip-rings 2, 5, 9, and to balanced polyphase starting resistances 15 - - 17. The phase winding connected to the slip-rings 1, 5, 9, Fig. 3, are uniformly spaced and the resistances may be connected with these rings at starting. When approaching synchronism choking coils 18 - - 20 connected with the non-uniformly spaced sliprings and phase windings are switched in to produce the asymmetrical electromagnetic effect in the rotor winding of the asynchronous machine and pull the group into synchronism. The resistances and choking coils may be connected in series or in parallel.
Patent GB-832482-A (GB)
Title: Improvements in or relating to grinding elements
IPC: B24D15/02
Filed: 1957-04-08
Abstract: 832,482. Abrasive tools. BISTERFELD, E., [trading as BISTERFELD & STOLTING.]. April 8, 1957 [April 7, 1956], No. 24937/59. Divided out of 832,481. Class 60. A tubular grinding element is composed of wound fabric strips pressed and bonded together by synthetic resin in which abrasive grains are embedded and has a substantially rectangular cross-sectional shape, the longitudinal sides 1 of which are more strongly compressed than the transverse sides 2. The elements may be mounted circumferentially around a support disc and in use, the sides 2, which are softer than the sides 1, wear to leave the harder sides 1 projecting slightly to form abrasive rings ; the sides 1 may be curved to produce circular abrasive rings. During pressing of the elements, the sides 2 may be formed with extensions 6 which serve to radially space the elements when mounted side-by-side on a support disc. The elements may be connected together by artificial resin or metal plates 10 and secured in openings in the support disc 8 by pressure acting in the direction of the arrows 9.
Patent GB-533040-A (GB)
Title: Improvements relating to time-lag devices
IPC: H01H7/03
Filed: 1939-08-31
Abstract: 533,040. Circuit-breaker timelag dashpots. ANDERSON, A., and ANDERSON, BOYES, & CO., Ltd. Aug. 31, 1939, No. 24968. [Class 108(iii)] A piston 2 working in a dashpot cylinder 1 and connected to an electric circuit-breaker rod 3 has a fluid transfer port 4 controlled by a normally open automatic non-return valve in the form of a spring blade 5 secured by a screw 6 which valve is so sensitive that it closes and prevents a violent upward displacement of the piston 2 under an excessive overload of only temporary character.
Patent GB-1421721-A (GB)
Title: Shaft assemblies
IPC: B21D22/02
Filed: 1974-06-06
Abstract: 1421721 Shaft couplings JEAN WALTEBSCHEID GmbH 6 June 1974 [12 June 1973] 25066/74 Heading F2U A tubular shaft 2, of non-circular cross-section is fitted in a correspondingly shaped bore of a member 1 to be connected to it and held there by a bead of weld metal 5 placed in a transverse bore 4 of the member 1. The member 1 is a fork of a universal joint. The weld metal need only be compatible with the material of the shaft 2.
Patent GB-851198-A (GB)
Title: Apparatus for the remote indication of the states of devices for example the "stop" and "go" states of railway signals
IPC: B61L25/06
Filed: 1958-08-05
Abstract: 851,198. Electric remote indicating systems. SIEMENS & HALSKE A.G. Aug. 5, 1958 [Sept. 24, 1957], No. 25067/58. Class 40 (1).  In an arrangement for the remote indication of the states of a plurality of two-state devices situated at field stations, a transmitter supplies in each cycle clock pulses equal in number to the number of field stations which pulses are transmitted over a first frequency and are counted at each field station and at a central station, the field stations thereby being primed in turn to emit a frequency dependent on the state of the device at that station which frequencies are received by the central station to operate indicating means. As shown, for 100 field stations, a transmitter TG comprises an oscillator TSM controlling a flip-flop pulse former T1F which supplies pulses at a frequency of 100 c.p.s. to a seven-stage binary counter TZK and to a generator TG1 for transmission by a frequency f 1  over a line DL. When 100 pulses have been counted by the counter TZK, a gate TS cuts off the supply to the generator TG1. At each field station, Fig. 4, the frequency f 1  is received by a filter SF1 and the signals derived therefrom operate a pulse former S1F which supplies a field station counter SZK. Outputs SB1 from the counter stages are connected in a manner characteristic of the particular field station so that when the appropriate count is reached a gate SKG is opened to cause transmission of a frequency f 2  or f 3  over the line DL depending on which of switches SK1, SK2 is closed, the switches being actuated by the device whose position is to be indicated. When pulses cease to arrive over the line DL, a gate SG is opened to reset the counter SZK at each field station. An input to the gate SG is provided, via an " or " gate SMG, from each counting stage so that should a counter stage not return to zero due to defect, the counter is prevented from operating to cause the emission of incorrect signals. Central station, Fig. 5.-The transmitter pulses are counted at the central station by a counter ZZK, outputs from the stages of which are selectively connected to gates ZST 1 - ZST n  corresponding to the respective field stations so that relays ZR11-ZR12 up to ZR n1 - ZR n2  are primed to receive signals originating from the indication frequencies f 2 , f 3  at the appropriate time to cause the " 1 " or " 2 " relays to energize in accordance with the state of the remote device. The relays energize only after receiving two or three successive pulses, to prevent false indication due to spurious pulses. The central station counter is reset via a gate ZG in a similar way to the field station counters.
Patent GB-630770-A (GB)
Title: An improved adjustable boring head for machine tools
IPC: B23B29/034
Filed: 1947-09-13
Abstract: 630,770. Grinding and polishing. BONEHAM, W. Sept. 13, 1947, No. 25124. [Class 60] [Also in Group XXII] An adjustable boring head comprises a transverse slide 3, to which a grinding attachment is secured, mounted on the head and adjusted relatively to the axis of the head by adjusting relatively to each other two internally toothed rings 6, 9, connected by one or more sets of pinions 21, 22, to two toothed wheels 19, 20, which are respectively fast and loosely mounted on the boring head, the wheel 20 being connected to the slide so that movement of the wheel will adjust the position of the slide. The ring 9 is located in a recess in the ring 6, and the rings are adjusted relatively to each other by a pinion 13 engaging teeth 11, 12, formed on the edges of the rings and secured on an axle 14, carried by a cap 16, rotated by a manually-operated knob 15. The wheel 20 is formed with teeth on its underside which engage with a pinion 26, the latter engaging a rack on the slide or, as shown, being on a shaft carrying a worm 27 which engages in a nut 28 secured to the slide. When it is desired to provide a coarse adjustment for the slide, the pinion 13 is moved laterally out of engagement with the teeth 11 on the ring 9 and locked by a pin 30 which engages in the teeth of the pinion 13 to prevent it from rotating. The ring 6 may be calibrated and an index mark provided on the cap 16. In a modification, Fig 4 (not shown), a coarse adjustment for returning the slide to zero position is obtained by locking the cap to the body part of the head by means of a set screw and plunger.