baber/WOPTO huggingface dataset:
Patent GB-1156053-A (GB)
Title: Improvements in Apparatus for Reproducing Television Signals from Magnetic Tape.
IPC: H04N5/94
Filed: 1966-06-21
Abstract: 1,156,053. Television recording. AMPEX CORP. 21 June, 1966 [23 June, 1965], No. 27747/66. Heading H4F. A frequency modulated television signal 32 obtained from a magnetic tape reproducing apparatus 10 contains " drop-out " portions 32b comprising only noise which is produced during the movement D when the rotating magnetic head 20 is out of engagement with the ape. After subsequent amplification and limitation of the signal in stages 34, 36 and 40, the noise 42b acquires a substantial amplitude such that, in the outut of the F.M. detector 44, the " drop-out " signals 46b have sufficiently large negative excursions to cause disturbance of the proper picture synchronization. In a typical reproducing apparatus the " drop-out " signals occur once in each field and by appropriate phasing are arranged to appear just before the vertical synchronizing interval. In accordance with the invention, in magnetic tapereproducing apparatus, the " drop-out " signals are eliminated by an arrangement in which the frequency modulated signal 38, prior to passage through the main limiters 40, is amplitude demodulated in a detector 50 to derive positivegoing pulses 64a during the " drop-out " intervals. These pulses are then applied to trigger on clamp stage 78 connected to the output of an amplifier 66 through which the signal passes from detector 44. The action of the clamp is to bring the " drop-out " intervals to a reference potential (earth as illustrated) so that no interference with synchronization occurs. The absolute level of the signal from amplifier 66 is made adjustable by means of resistor 70 in the emitter connection. The level is selected so that the " drop-out " interval corresponds to a grey level, i.e. a level in the direction from black opposite to that of the synchronizing signals.
Patent GB-805801-A (GB)
Title: Improvements in electric motors with displaceable armature
IPC: F16D59/02
Filed: 1956-09-12
Abstract: 805,801. Electromagnetic brakes. DEMAGZUG G.m.b.H. Sept. 12, 1956 [Sept. 15, 1955], No. 27946/56. Class 103 (1). In a device for preventing engagement of the brake in electric motors with displaceable armatures, one radially displaceable locking member is adapted to interact with the motor shaft when the motor is running to prevent engagement of the brake when the motor is stopped. In the embodiment illustrated, the top part of the drawing represents the device in the inoperative position and the lower position is shown in the operative position. The device is in the form of a structural unit connected to the outside of the motor casing in such a manner that balls 2, which constitute the locking members, are adapted to engage a groove 1a in the motor shaft-end 1 as the motor is running. If the engagement of the brake after the motor has stopped is to be avoided, a magnet coil 7 is energized so that a bush 4 is moved by the armature 5 to the position shown in the lower part of the drawing to lock the balls 2 between an annular groove 4a formed on the inner surface of the bush 4 and the groove 1a in the motor shaft-end 1 in the brake released running position. When the motor is restarted after a disengagement of the brake, the force of the brake spring is neutralized by the magnetic force of the stator field of the motor, and pressure exerted by the balls on the bush 4 is released, so that the bush is enabled under the action of the spring 6 to return to its initial inoperative position. In this manner, after the switching-off operation, the rotor can be freely rotated by hand. The device can also be rendered effective when the motor is stationary by switching on the motor and magnet simultaneously; in which case the shaft 1, the armature 5 and thus the bush 4 are brought into the locking position illustrated in the lower half of the drawing. The motor is automatically switched-off when the bush 4 reaches its operative position, by reason of the switch 8 interrupting the circuit to the motor.
Patent GB-272757-A (GB)
Title: Improvements relating to impulse transmitters for automatic telephony
IPC: H04M1/274
Filed: 1926-11-06
Abstract: 272,757. Pastor, S. Nov. 6, 1926. Impulse transmitters for automatic telephony. In an impulse transmitter in which a single setting operation acts to send the complete impulse signal for a particular subscriber, a number of signal sending mechanisms are each associated with a branch circuit connected in parallel with the signal circuit of the operator's sub-station. The impulsing-mechanisms A, B, C, Fig. 2, each comprises a number of discs fixed to a shaft 12, one. set of discs A being so connected that their peripheries form a continuous spiral which engages a forked arm 34, Fig 5, on one of three blocks 27 mounted on a plate 26 which is slidably mounted on a stand 24. Depression of any key 17 - - 19 acts through gearing K. G, D, A<1> to rotate the shaft 62 so that the spiral A shifts the plate 26 to the left, Fig. 2, a distance limited by stops 14<1>,. 15 on the spiral. Each key-stem is cammed so that throughout its. reciprocation it operates spring contacts N, as shown in Figs. 2 and 9. Each block 27 carries a pivoted arm 31 which is actuated by lugs 13' on the respective discs to operate impulse-sending spring-contacts X, Y, Z, when the shaft is spring-returned to its initial position. Operation of one of the contacts N, O P, Fig. 9, removes a short-circuit from the corresponding impulsing-contacts X, Y, or Z, and completes an impulsing loop therefor, T, X, Y, Z, left-hand contacts of D, right-hand contacts of N, R. Specification 25076/94 is referred to.
Patent GB-378253-A (GB)
Title: Improvements in a method of manufacturing commutator segments
IPC: H01R43/06
Filed: 1931-10-08
Abstract: 378,253. Making dynamo - electric machines. FORD MOTOR CO., Ltd., 88, Regent Street, London.-(Assignees of Sorensen, C. E. ; 8120, East Jefferson Avenue, Detroit, Michigan, U.S.A.) Oct. 8, 1931, No. 28012. Convention date, Jan. 19. [Classes 83 (ii) and 83 (iv).] Punches ; forging dies.-Segments for a commutator are made by rolling a bar of copper to suitable cross section, cutting off lengths so as to form one end of the dovetail for engaging the holding rings forming the connecting lugs by the pressure of dies and then forming the other end of the dovetail ; slots are then machined in the lugs to receive the conductors. In the method shown the segments are formed in pairs which are afterwards separated. A bar 20, Fig. 4, is cut into pieces 21 of the shape shown in Fig. 3, which are then pressed by dies into the shape shown in Fig. 2. The piece shown by the dotted lines 23 is then removed and the segments separated along the middle link. Figs. 8, 9, and 10 show the dies employed. The rod 20 is fed through a slot in the die 28 into the die 24 and is cut off in lengths by the motion of the die 28. The lugs 17 are formed by a heading die 27 co-operating with the die 24 as shown.
Patent GB-191839-A (GB)
Title: Improved method of extracting gutta-percha and like gums
IPC: B29D23/24
Filed: 1921-10-21
Abstract: 191,839. Smith, W. S. Oct. 21, 1921. Gutta-percha &c.-Herbivorous animals are fed upon leaves of gutta percha &c. producing trees, their excrement is collected and washed to obtain the gum which passes through the animal unchanged.
Patent GB-504116-A (GB)
Title: Improvements in or relating to registering or calculating apparatus
IPC: A63D15/20
Filed: 1937-10-15
Abstract: 504,116. Calculating - apparatus; games-scoring apparatus. HOLLOWAY, A. J. Oct. 15, 1937, No. 28073. [Class 106 (i)] [Also in Group XV] A scoring or other registering apparatus comprises an indicator having two or more denominational sets of numbers, an electric lamp associated with each number, an entering means associated with each set of numbers operating contacts to illuminate lamps indicating the total of the entered scores, the entering means being also provided with transfer mechanism. The embodiment shown has two complete devices arranged in a common casing. The entering means comprises hundreds, tens and units apertured discs 10, 11, 12 set by the fingers in conjunction with fixed stops 14, the numbers seen through the apertures being provided on the fixed base 6. Each disc is secured to an entering-shaft 22 having a contact arm 28 engaging a series of contacts 60 each connected to its respective lamp 57 situated in a compartment 62 of the totals indicator. The indicator for each device comprises a horizontal line 13 of figures 0 or 1 .. 9. In the front of each compartment is a shield or other means to form a digit when the lamp is illuminated. A ratchet wheel 24 co-operating with a pawl 30 prevents backward rotation of the respective entering-shaft. Transfer mechanism.-A cam 39 is fixed to the tens-entering shaft 22 and causes a weighted lever 37 to rock suddenly at transfer ; the lever having a pawl 34 which operates clockwise the ratchet wheel 24 secured to the entering-shaft of the hundreds denomination. The pawl is yieldably attached to the lever to allow the normal clockwise operation of the ratchet wheel. A similar transfer mechanism is provided between the units and tens denominations. Preventing overthrow.-A spring arm 58, Fig. 2, secured to the entering shaft 22 engages a block 59 to act as an overthrow-preventing brake when transfer to the shaft 22 is taking place.
Patent GB-482934-A (GB)
Title: Improvements in and relating to electrical plug and socket connectors
IPC: H01R29/00
Filed: 1937-10-15
Abstract: 482,934. Two-part couplings. HODGES, C. G. Oct. 15, 1937, No. 28091. [Class 38 (i)] A coupling for varying the connection between the mains and a pair of load circuits consists of three sockets and plugs arranged respectively as an equilateral triangle, two of the sockets and two of the plugs being of a different length from the third, so that the plugs can be inserted in various relations in the sockets to vary the circuit connections, a short socket and a short plug when coincident remaining unconnected. One short socket 3, and one or two short plugs 5 are employed, the short socket being permanently connected by a conductor 10 to one of the long sockets 1. The load circuits 6, 7 have a common connection to the short plug 5 so that as shown they are connected in series to the supply lines 8, 9 but if the plug is turned into other positions the circuits are connected in parallel or one only is energized. An earthing socket and plug or a sheath may be provided.
Patent GB-444966-A (GB)
Title: Improvements in knitted fabrics and in the production thereof
IPC: D04B1/06
Filed: 1934-10-02
Abstract: 444,966. Knitting. HOSIERY DEVELOPMENTS, Ltd., 30, Park Row, Nottingham, and JONES, T. H., The Aspens, Breck Hill Road, Woodthorpe, Nottinghamshire. Oct. 2, 1934, No. 28166. [Class 74 (ii)] A plain, i.e. non-ribbed, fabric has the same weft thread forming ordinary stitch loops 20<c> at alternate wales in a course and forming locking loops 21<c> which pass through and around previously formed stitch loops 21B at the intervening wales. The fabric may be made upon machines having independently operable bearded needles, the extremity of the beard 25 of each of which is looped upwards as at 25<a>. In operation, and considering two adjacent needles 120, 121, after thread t has been supplied to the needles the beard of one needle 121 is pressed by a presser 27 so that the old loop 21A is cast off. The other needle 120 is not pressed, and while the needle 121 remains in a lower position, the needle 120 is raised so that the old loop 20A is taken by the portion 25<a> of the beard. The upward movement continues until the part 25 is above the thread t. The beard of the needle 120 is then pressed and the needle lowered so that a loop 20B of the new thread is drawn through the old loop 20A, Fig. 7. At the next course, the needles 120 reverse their functions. The fabric shown in Fig. 8, in which stitch loops 30E are twisted twice, may be formed upon machines having bearded needles 131, each having an eye 35. Specification 329,098, [Class 74 (ii)], is referred to.
Patent GB-324691-A (GB)
Title: Improvements in transparencies
IPC: B44F7/00
Filed: 1928-10-02
Abstract: 324,691. McCreath, J. Oct. 2, 1928. Stereoscopic apparatus. - Relates to transparencies and displaying-apparatus therefor. The transparency consists of two or morepictorially ornamental surfaces, such as drawings, etchings, or photographs on glass, film, &c., which are superposed and spaced apart, so that a stereoscopic effect is obtained on the passage of light therethrough, together with a separate sheet of light-diffusing material, such as opal or matt-surfaced glass, in series with the surfaces. Colour may be applied to one or more of the surfaces, or to a separate sheet, or the pictorial ornamentation may consist of colour. A protective sheet or layer of transparent material is preferably used. The ornamented surfaces may be two similar images, or two stereoscopic views of the same object taken at different distances. Two sets of transparencies may be superposed, in order to give a composite picture. The adjacent sides of the different sheets may be in contact or spaced apart. A long transparency, suitable for kinematographic purposes, may consist of two identical sheets or films, with colour applied to the ornamented surface of one sheet, which is then applied to the back of the other sheet, which may also be coloured. The two ornamented surfaces are thus spaced apart by the thickness of one sheet, and are backed by a third sheet composed of lightdiffusing material. The sheets forming the transparency may be mounted in a frame adapted to slide into a cabinet containing lamps, which may be coloured, or reflectors, for illuminating the transparency. Means such as notched bars may be provided, for spacing the sheets. Means may be provided for admitting light between the sheets, so that one or more sheets may be illuminated at will.
Patent GB-281682-A (GB)
Abstract: 281,682. Royal Typewriter Co., Inc., (Assignees of Degener, G. 0.). June 10, 1926, [Convention date]. Divided on 272,467. Attachments to typewriters.-The item-entering keys are locked unless the totalizer is correctly positioned within the computing zone for receiving an item. The spindles 13 are rocked by the depression of the corresponding numeral key levers H through con. nections 15, 14, and to each spindle 13 is connected by an arm 16 a sliding bar 17 toothed at 24 to engage a cam gear 21 controlling the actuation of the master wheel. Mounted on the totalizer carriage 12 is a comb plate 74 having tines 75 at predetermined intervals corresponding with the spacing of the digit columns. Co-operating with this comb plate is a dog 67, maintained at right angles to the plate by means of spring-controlled arms 69 and mounted on a slide 64 linked at 63<1> to a frame 60 pivoted at 53. Another frame 52 also pivoted at 53 has one arm 54 engaging a spring wire 56 secured to the frame 60 while its other arm 51 lies against a roller carried by a spring-controlled frames 45 pivoted at 47 and engaging all the rack-bars 17. When any numeral key is depresed therefore, the rocking of the various frames slides the dog 67 towards the comb plate 74, and if the carriager is in the right position for the entry and typing of a figure the dog will be stopped by a tine 75 and the frame 60 prevented from further displacement. If, however, the totalizer carriage position is irregular or corresponds with a decimal point or a comma the frame, being unobstructed by a tine 75, is fully rocked and an arm 76 of the frame descends into the path of the frame 45 and prevents its rearward movement and therefore locks the numeral keys. To disable this control at any time a key 77 may be depressed so as to retain the arm 76 raised. Specifications 272,467 and 297,717 are referred to
Patent GB-1498287-A (GB)
Title: Potentiometric pressure sensor
IPC: F02P5/10
Filed: 1975-07-04
Abstract: 1498287 Pressure transducers DUCELLIER ET CO 4 July 1975 [9 July 1974] 28179/75 Heading G1N [Also in Division H1] A fluid pressure transducer comprises a diaphragm 4, Fig. 1, attached by a spring-loaded arm 6 to a lever 7, pivotted at 8 and carrying a sliding contact 11 for a resistance track 12, whereby the pressure on the outer surface of diaphragm 4 determines the angular displacement of the lever 7 and the voltage tapped off the potentiometer 12. A toothed eccentric 15 enables adjustment to be made of the tension in loading spring 5 and of the initial position of the slider 11 on the track12; the pressure between the latter is adjusted by rotation of the slider carrier 10 about a locking screw 20.
Patent GB-387764-A (GB)
Title: Improvements in vaporisers for internal combustion engines
IPC: F02M31/08
Filed: 1931-10-12
Abstract: 387,764. Vaporizers. SMYTH, E. L., 166, Lisburn Road, Belfast. Oct. 12, 1931, No. 28232. [Class 7 (iii).] Combustible mixture is conveyed through a chamber 1 of which the top and sides are insulated from a space 2 traversed by the exhaust gases, the insulation 3 being held in place by a lining 4. The base 5 vaporizes fuel which gravitates towards it. In a modified construction, Fig. 3, the top and sides of the chamber 1 are constructed as a separate unheated unit which is secured between projections 6 carried by the exhaust conduit 2, insulating- material 3 being provided between the projections 6 and the sides of the chamber 1. The chamber 1 may surround an exhaust-heated induction pipe.
Patent GB-1045687-A (GB)
Title: Improvements in or relating to time division multiplex communication systems
IPC: H04Q11/04
Filed: 1963-07-17
Abstract: 1,045,687. Automatic exchange systems. SIEMENS & HALSKE A.G. July 17, 1963 [July 18, 1962], No. 28232/63. Heading H4K. In a time division multiplex communication system, metering pulses in respect of a call are inserted into a circulating memory during the same time slot as that in use for the call. The addresses of the calling and called subscribers are stored in circulating memories Ua and Ub respectively whereby the appropriate line gates S1 to Sx or trunk gates SL1 to SLx may be opened synchronously during the time slot allotted to the call. The memories consist of magnetostrictive delay lines having associated amplifiers for inserting, reinserting and deleting pulses relevant to a call during the corresponding time slot. In the case of a local call, a metering pulse is inserted into circulating memory Uz (section tzm) from control unit E upon the reply of the called subscriber, and upon termination of the call the address of the calling subscriber is passed via switch SR1 to a recorder, e.g. a magnetic tape, of a subscriber's meter under the control of the circulating pulse in Uz. In the case of a trunk call, e.g. from a PBX to a main exchange, incoming metering pulses on the relevant trunks FL1 to FLx are transmitted via a transfer unit such as Ue1 and metering bus ZM to the control unit E where they are processed and injected successively into memory Uz. Provision is made in unit E for ensuring that only one pulse is inserted into Uz for each metering pulse on a trunk since in general each such pulse will be sampled more than once during the successive scanning of the line circuits T1 to Tx and transfer units Ue1 to Uex by the control unit. If only one delay line, e.g. tzm, is provided in the memory, the address of the calling subscriber must be recorded before a new pulse can be inserted so that provision is made for reading the memory between the metering pulses occurring on the trunk. Alternatively by providing a plurality of delay lines the successive pulses may all be temporarily stored and at the end of the call, the contents of the memory then passed via switches SR4, SR2 and SR3 (the identity of the called subscriber in a toll or trunk call being recorded in Ud) to a call-charge-assessing device DR, e.g. a PBX operator or an automatic ticketing device. The system may be one in which each subscriber is permanently allotted a particular time slot.
Patent GB-164703-A (GB)
IPC: B61D7/28
Filed: 1920-10-06
Abstract: 164,703. Krupp Akt.-Ges., F. June 7, 1920, [Convention date]. Hopper wagons.-The side doors are locked in the open or closed position by means of a toggle joint which in that position has just passed its position of dead-centre. The doors B, B, are connected by rods D, D, to the ends of opposing crank arms C, C<1>, the arm C<1> being connected at its junction with the arm D to the toggle joint formed by the links E, F. The latter are pivoted at c<3> : an extension of the link E is formed with a stop e<2> against which the link F bears when it has just passed its dead-centre at the open or closed position of the doors. To discharge the load, a rod attached to the pivot c<4> is revolved slightly counter-clockwise; this breaks the toggle, Fig. 4, and the doors swing out under the action of the load, the arm D carrying the toggle into the position shown in Fig. 5, where it locks the doors in the open position. To close the doors, the pivot c<1> is turned slightly counterclockwise so as to break the toggle, the doors then close due to their weight. The pivot c' is then turned slightly clockwise until the link F bears against the stop e<2>, Fig. 3, this action locking the doors in the closed position.
Patent GB-537175-A (GB)
Title: Improvements in and relating to cathode pay apparatus
IPC: H01J31/04
Filed: 1939-10-23
Abstract: 537,175. Valve amplifying and generating circuits. BLUMENTHAL, L. J., and PERELMANN, A. Oct. 23, 1939, No. 28482. [Class 40 (v)] An ionic discharge tube having an anode, a cathode and a collector electrode has a transverse magnetic field applied thereto to control the amplitude and frequency of the current produced in the circuit of the collector electrode. A permanent magnet or an electromagnet may produce the field or the anode current may flow through the electromagnet coils 25, Fig. 3. A transformer output may be provided with primary windings in both the anode and collector electrode leads or separate outputs may be taken from the two electrodes, Fig. 4 (not shown). Fig. 6 shows a push-pull generator or amplifier in which the collector electrodes 34, 35 function as grids and in the case of a generator frequency and phase are controlled by condensers 40, 42 and resistance 41.
Patent GB-756570-A (GB)
Title: Improvements in or relating to bust-supporting garments
IPC: A41C3/00
Filed: 1953-10-15
Abstract: 756,570. Brassieres. BAYER & CO., Ltd., C., and PIERSON, J. O. Oct. 6, 1954 [Oct. 15, 1953], No. 28534/53. Class 141. A bust-supporting garment has the upper part of each breast cup formed of two or more substantially triangular flaps disposed side by side, each triangle being secured at its base to the lower part of the breast cup and secured at its apex to suspension means for the garment, the adjacent sides of the juxtaposed triangles remaining free. In the embodiment shown in Fig. 1 each breast cup comprises a lower part 18 and three triangular flaps 20, 21, 22 secured at their lower edges to the part 18 by the seam 19 and at their apices to the lower end 23 of the shoulder strap 24. The free sides 21a, 22a; 20a, 21b define the edges of two convergent slots allowing for variations in size of the breast of the wearer. The garment also comprises a body-encircling band having alternate panels of elastic and non-elastic material, the ends of the band and the adjacent flaps 22 being secured together at the front of the garment at 17 by hooks and eyes, so that the garment may be readily opened down the front from top to bottom.
Patent GB-1151215-A (GB)
Title: Improvements in Fluid Control Valves
Inventor: SHERLOCK WILLIAM RAYMOND
IPC: F16K5/06
Filed: 1965-07-07
Abstract: 1,151,215. Valves. SHELL INTERNATIONALE RESEARCH MAATSCHAPPIJ N.V. 13 Sept., 1966 [7 July, 1965], No. 28793/65. Heading F2V. A spherical ball valve comprises a metal ball rotatable in a valve body and engaging electrically non-conductive seating. The ball is maintained in electrical contact with the body by a spring or brush housed in a bore in the ball or body.