baber/WOPTO huggingface dataset:
Patent GB-1509768-A (GB)
Title: Multichannel record disc recording system with signal level control
IPC: H04S3/00
Filed: 1975-06-20
Abstract: 1509768 Quadraphonic systems MATSUSHITA ELECTRIC INDUSTRIAL CO Ltd and NIPPON VICTOR KK 20 June 1975 [25 June 1974] 26297/75 Heading H4R In a quadraphonic recording system in which a first sum signal and a first difference signal are formed from first and second channel signals, and a second sum signal and a second difference signal are formed from third and fourth channel signals, and the difference signals angle modulate respective carriers which are added to the respective sum signals to be recorded on the respective walls of a record groove, the levels of the angle modulated signals are controlled in accordance with a control signal derived from the level of at least one of the sum signals. As described the four channel signals are derived from a magnetic tape 10 and pairs of the channels combined in sum and difference in circuits 12a and 12b to form sum signals Sa, Sb, and difference signals Da, Db. The difference signals angle modulate respective carriers, at 15a, 15A, and the levels of the angle modulated signals are controlled, in level controllers 16a, 16b, in accordance with the magnitude of the largest of the sum signals, as derived in controller 17, before being mixed with the respective sum signals and applied to the record cutter 19. The control circuit and variable gain circuit is shown in Fig. 4 in which the sum signals are applied via amplifiers 31, 33, and high-pass filter 34, having a characteristic to compensate the record replay characteristic, to a phase splitting amplifier 35, which provided antiphase outputs to feed to respective diode rectifiers Dl, D2; or D3, D4 for the second sum signal. Rectified signals which exceed a predetermined level are squared in the wave shaper circuit 37 and fed to an integrator circuit 38 having a fast rise time and a relatively slow fall time. The resulting control signal controls the impedance of the f.e.t. Q 3  in a potential divider in the gain control amplifier through which the angle modulated difference signal is fed.
Patent GB-501461-A (GB)
Title: A clip carrier for cycle bag support, and article support for display stand, or other suitable purposes
IPC: B62J9/00
Filed: 1937-09-29
Abstract: 501,461. Luggagecarriers; brackets. ROSS, J. E. Sept. 29,1937, No. 26321. [Class 136 (i)] [Also in Group XIV] A carrier for supporting a bag or other luggage on a cycle, and articles on a display stand &c. comprises two arms b formed integral with or welded &c. to a clip a adapted to grip a pillar, tubular upright, &c. on a cycle, stand, &c., the ends of the arms being locked together, e.g. by a pin g engaging one of the holes h, so as to hold the carrier in position without the use of bolts,. screws, &c. A sheet-metal platform may be mounted on the arms b, the platform having bent-out hooks or clips to engage recesses c in the arms b.
Patent GB-1348468-A (GB)
Title: Rotary piston positive -displacement machine
IPC: F01C19/10
Filed: 1972-06-06
Abstract: 1348468 Rotary positive-displacement machines MONARK-CRESCENT AB 6 June 1972 [7 June 1971] 26373/72 Heading F1F A rotary positive-displacement machine has a surface 8 generated by a sealing strip 6 with a sealing surface 10 worn down in a machine having a conventional two-lobed epitrochoidal surface 12. After wearing down of the seal 6 against surface 12 the pattern of the worn surface is copied and then a cutting tool and the pattern rotate around parallel axes in the same direction, the angular speed of the pattern being # and the angular speed of the slotting tool being 2/3#. This creates a modified two-lobe curve 8 which forms the wall of the new machine. The method can be applied to machines with n-lobed walls and with rotors having n+1 apexes.
Patent GB-241933-A (GB)
Title: Improvements in or relating to advertising display devices
IPC: G09F13/06
Filed: 1925-10-23
Abstract: 241,933. Keller, R., (Assignee of Vangel, V. G.). Oct. 24, 1924, [Convention date]. Letters.-To secure uniform illumination of the letters of a display sign, the surface a of the letter is so curved relatively to the centrally arranged lamp o that the illumination is equal on all parts of the letter. The lamp may be coloured to produce a varied colour effect.
Patent GB-1259760-A (GB)
Title: Ventilation of an electric motor
Inventor: WIGHTMAN LAWRANCE WILLIAM
IPC: H02K9/06
Filed: 1970-06-02
Abstract: 1,259,760. Ventilating electric motors. EMERSON ELECTRIC CO. 2 June, 1970, No. 26665/70. Heading H2A. In an electric, e.g. A.C. motor comprising a rotor 18 rotatable in a stator 12 fitted into a hollow cylindrical casing 10 whose end shields 38, 40 journal the rotor shaft 20, a ventilating structure comprises a blower 64 in each unobstructed end space between the stator and end shield and includes an annulus 68 rotatable with the rotor, and. having radial vanes 72 in a  concave surface coextending radially with the stator end face and a peripheral edge having a close running fit with the casing wall, vents (74) Fig. 2, in the end shields, and circularly spaced vents 76 in the casing between the ends of the  stator and the blower edges; in operation, cooling air is drawn in through the end shield vents and annulus centres, and is directed outwardly along the stator end surfaces, the casing wall, and exits through the casing vents. The unobstructed space is provided by securing the end shields to the casing ends by bolts 52 which engage rectangular nuts 48 haying shanks retained in casing holes 46. The rotor has end rings 19 with integrally cast vanes 62 to which screws 66 secure the blowers The shaft bearings 22, 24 are initially located by applying a paste cement 58 between their rings 54, 56 and the end shields, centering the rotor by shims 61, hardening the cement, and then removing the shims.
Patent GB-374737-A (GB)
Title: Means for mixing two gases in definite proportions
IPC: F23D14/60
Filed: 1931-09-24
Abstract: 374,737. Mixing valves ; regulating fluids. MANGIAMELI, F., 88, Julicherstrasse, D³sseldorf, Germany. Sept. 24, 1931, No. 26667. [Class 135.] In apparatus for producing a mixture of gases in any desired proportions the gases enter a mixing chamber h through separate sets of holes f, g which can be opened and closed successively in opposite phase by the semicylindrical end parts, as shown, of a rotary valve e. The relative sizes of the two sets of holes are dimensioned according to the densities of the gases. The desired proportions of the gases are shown on a scale provided on the operating head i<1> opposite a fixed index finger i. Non-return valves m, n prevent any back flow from the mixing-chamber. The gases are forwarded to the mixing valve, preferably at equal pressures, from a liquid-seal pressure regulator p in which the outlet pressures at a<1>, b<1> are controlled by varying the depth of immersion of the inlet pipes r, s.
Patent GB-786818-A (GB)
Title: Improvements in or relating to processes for the production and remelting of compounds or alloys
IPC: C22C1/02
Filed: 1955-09-19
Abstract: A process for the melting and subsequent crystallization of a compound or alloy derived from both volatile and non-volatile constituents without change in composition comprises heating the compound or mixture to its melting point in a sealed vessel in an atmosphere of the volatile constituent or constituents, the proportion of volatile constituent or constituents added to form said atmosphere and the temperature conditions, being such that, at equilibrium, substantially none of the added volatile constituent or constituents exist in a non-gaseous state, either as a contaminant of the molten compound or alloy or in a separate part of the vessel.  In a modification the compound or alloy may be prepared in situ by heating the non-volatile constituent or constituents to the melting point of the compound or alloy in the presence of an excess of the volatile constituent or constituents to produce the conditions specified above.  In a further modification a melt is produced of which the proportion of volatile constituent is less than in the desired crystalline solid, but from which the desired compound or mixture crystallizes.  The process may be applied to zone melting and crystal drawing.  The process is particularly applicable to Aiv Bv and Aii Vvi compounds (the Roman numerals indicating valency). Volatile constituents specified are arsenic, phosphorus, selenium, sulphur, mercury, iodine and bromine.  Compounds specified are GaP, In2 Se3, HgTe, AgI and Az Br.  GaP is produced in a sealed tube 1 by heating gallium in a graphite boat 2 to a temperature of 1,350 DEG C. by means of a high-frequency induction coil 4, and heating the remainder of the tube which contains a quantity of phosphorus 3 to a temperature of at least 650 DEG  C. by means of furnace parts 5 and 6.  The sealed tube is then slowly withdrawn from the induction coil. If the gallium phosphide is crystallized from a melt of the stoichiometric composition, the phosphorus vapour pressure above the melt is about 8 atmos.  If, however, the melt contains a few per cent less phosphorus the vapour pressure is only about 2 atmos.  In Asy P(i-y) is similarly produced.
Patent GB-632298-A (GB)
Title: Improvements in or relating to self-loading rapid-firing toy pistols
IPC: F41B7/00
Filed: 1946-09-06
Abstract: 632,298. Toy pistols. CHRISTIANSEN, G. K. Sept. 6, 1946, No. 26825. [A Specification was laid open to inspection under Sect. 91 of the Acts, Feb. 18, 1947.] [Class 132 (iii)] A self-loading rapid-firing toy pistol comprises a chamber, a main spring therein, a stock and a trigger movable in the stock wherein a projectile disposed in the chamber can be engaged by a projection on the trigger and pulled thereby some way along the chamber during the compression of the main spring, the projection on the trigger subsequently disengaging from the projectile and permitting the ejection thereof from the chamber by the main spring. As shown in Figs. 1 and 2, the trigger consists of a flat plate e slidable against the pressure of a trigger spring in an inclined recess or channel k in the stock a. The trigger carries at its forward end an upright pin f projecting in front of the projectile p in the chamber d. The main spring g is mounted on a pin h fixed in a groove m of smaller cross-section than the channel k. Grooves I and n are similarly of smaller cross-section than the channel k and allow free movement of the pin f and the trigger spring j respectively. The magazine o is formed as an upward continuation of the chamber d and terminates in a filling opening with undercut projections g, r between which projectiles may be inserted and which prevent them rolling or jumping out on jarring or shaking the pistol. Forward of the lowest projectile in the magazine a movable arm z is provided, carrying a side web z<SP>1</SP> which co-operates outside the barrel with a cam z<SP>2</SP> on the projection f on the trigger. Alternative trigger forms are described. Fig. 3 shows two uprights e<SP>1</SP> and e<SP>2</SP> terminating in pins f<SP>2</SP> and f<SP>3</SP> respectively and connected by a link t and turning on pivots x and y. Pin f<SP>2</SP> actuates the projectile and pin f<SP>3</SP> the main spring. If desired, this second upright may be omitted, the main spring being compressed by the projectile. Fig. 4 shows a trigger mechanism formed by two turnable sprockets u and v carrying respectively an upright e<SP>3</SP> terminating in a pin f<SP>4</SP> actuating the projectile and a finger grip e<SP>1</SP>. On compressing the trigger e (el or e<SP>4</SP>) the projectile is drawn backwards (of Figs. 1 and 2) and the main spring compressed (possibly through the projectile) until the projection on the trigger moves out of the track of the projectile and the main spring forces it out of the barrel c. The arm z-serves to prevent the lowest projectile in the magazine from dropping into the chamber as the projectile p is withdrawn, the projectile being released as the cam z<SP>2</SP> on the projection f pushes the side web z<SP>1</SP> forward.
Patent GB-805787-A (GB)
Title: Improvements in and relating to clips for formwork
Inventor: CROOK ERIC GEORGE BENJAMIN
IPC: F16B35/06
Filed: 1955-09-20
Abstract: 805,787. Wall shuttering clamps. ACROW (ENGINEERS), Ltd. Sept. 3, 1956 [Sept. 20, 1955], No. 26853/55. Class 20(2) [Also in Group XXV] The flanges 14 of adjacent shutter panels are slotted at 12 to receive the stepped head 20 of the bolt 16, which is inclined to the working face of the panels and carries a channel section sliding piece 26 with a 'face inclined so as to lie flat against one flange 14 when the bolt is tightened by the wing nut 18, the step 22 on the bolt head engaging at the same time the adjacent flange. Specifications 741,764 and 741,765 are referred to.
Patent GB-740979-A (GB)
Title: A new or improved driving unit for rotary members
Inventor: BURTON THOMAS HOWARD
IPC: B30B15/00
Filed: 1952-10-27
Abstract: 740,979. Ratchet gearing. HORDERN MASON & EDWARDS, Ltd. Oct. 23, 1953 [Oct. 27, 1952], No. 26856/52. Class 80(3) [Also in Groups XXVI and XXX] A ratchet device for alternatively driving a ring 10 in either direction of rotation comprises a carrier member 17 rotatably mounted upon the ring 10 and carrying two pawls 28, 29 with teeth for co-operating with teeth 27 on the ring 10. The pawls are pivoted at 32 and 33 and pressed by springs 48, 49 into engagement with the teeth 27 on ring 10 and are also interconnected by a pin 39. Sockets 50, 51 are also provided in the pawls 28 and' 29 respectively so that by insertion of a tommy-bar in either socket the pawls and carrier member can be oscillated. According to which socket the pawl is inserted the ring 10 will be driven in one direction or the other on each movement of the tommybar in one direction, the pawls being lifted clear on the return movement. Applications stated are to the adjustable connecting rod of a mechanical press, screw-jacks and the screwed spindles of extensible legs or supporting members of apparatus and machines requiring adjustment.
Patent GB-439761-A (GB)
Title: Improvements relating to interlocking devices for electric switches
IPC: H01H21/06
Filed: 1934-09-19
Abstract: 439,761. Snap action switches. MIDLAND ELECTRIC MANUFACTURING CO., Ltd., Barford Street, and VICARY, A. W., 55, Greenhill Road, Moseley, both in Birmingham. Sept. 19, 1934, No. 26910. [Class 38 (v)] A snap-action switch of the enclosed type comprises a contactcarrying spindle cdriven with lost-motion by an external handle, (not shown), and carrying a lever l connected by a link m to an arm o of a torsion spring n to give a snap-action. A blade spring p carries at its free end a rod r positioned against a wall t of a recess in the base, and when the cover g is removed the rod r lies in the path of the link m to prevent closure of the switch. When the cover is in position a projection s engages the spring p to move the rod r out of the path of the link m to allow the switch to be closed. The cover is held in position by an internally screwed nut i engaging a screw (not shown), upstanding from the base. A sector shaped flange (not shown), on the cover engages a projection (not shown), on the handle to prevent opening the cover when the switch is closed.
Patent GB-385920-A (GB)
Title: Improvements in or relating to synchronisation devices for television and the transmission of moving pictures or of pictures derived from cinematograph films
IPC: H04N5/073
Filed: 1932-09-28
Abstract: 385,920. Television. COMPAGNIE POUR LA FABRICATION DES COMPTEURS ET MATERIEL D'USINES A GAZ, 12, Place des Etats-Unis, Montrouge, Seine, France. Sept. 28, 1932, No. 26934. Convention date, Sept. 28, 1931. [Class 40 (iii).] In television, a synchronizing signal, transmitted on the same carrier wave as the picture signals, consists of groups of impulses separated by the duration of the scanning of one line, the groups being separated by the duration of scanning of more than one line; at the receiver, detecting and tuned circuits separate the picture signals and the synchronizing signals which are applied to a synchronous motor. A picture, Fig. 1, is scanned 16<2>/3 times per second and has reflectors m<1>, m<2>, m<3> at one edge, each reflector extending over 10 scanning lines and separated from the next reflector by 10 scanning lines, so that in a complete scanning synchronizing impulses of greater amplitude than the picture signals occur at the end of each line, and are distributed in three groups occurring every 10 lines. The received impulses are applied across a resistance Z, Fig. 3, in the input circuit of a valve 1 whose grid is biased to pass impulses of an amplitude attained only by the synchronizing signals. The output of valve 1 includes a condenser C in parallel with the primary of the transformer T1 which constitutes a circuit tuned to a frequency of 50. The condenser C accumulates the individual impulses of each group so that the transformer T1 applies to the grid of valve 2 impulses corresponding to the groups only, which occur at a frequency of 50 (3 Î 16<2>/3). The valve 2 thus produces an amplified current having a 50-cycle frequency which is applied to the synchronous motor MS driving the scanning apparatus. The anode circuit of valve 1 could be tuned to a frequency of 1000, the anode circuit of valve 2 being tuned to a frequency of 50, a third valve amplifying the signals to drive the motor. Specification 363,605 is referred to.
Patent GB-1276363-A (GB)
Title: Liquid developer for electrophotography
IPC: G03G9/135
Filed: 1969-05-28
Abstract: 1276363 Artificial resin dispersions RICOH KK 28 May 1969 [30 May 1968 25 March 1969] 26995/69 Heading C3R [Also in Division G2] Electrophotographic liquid developer comprises a carrier liquid containing (a) dispersed toner particles comprising a pigment and a polarity-control agent, and (b) a dithiophosphate of formula (in which R I-IV  are each 3-18C alkyl or aralkyl in which the alkylene chain is 3-18 C; Me is a divalent metal atom). Preferably Me is Zn, Ba, Ca, Sr or Mg, the pigment is carbon black, the polarity-control resin is a phenol modified xylene and the developer may also contain an acrylic copolymer to improve dispersion.
Patent GB-887177-A (GB)
Title: Improvements relating to cushions and the like
Inventor: DIBDIN THOMAS JAMES RIMBAULT
IPC: A47C27/14
Filed: 1957-08-28
Abstract: 887,177. Cushions. DUNLOP RUBBER CO. Ltd. Aug. 22, 1958 [Aug. 28, 1957], No. 27060/57. Class 52(4) In a reversible pillow, cushion &c. of resilient cellular material such as rubber or polyurethane foam the walls forming the two main faces are connected and supported by parallel-sided columns of the cellular material integral with the material of one or both of the main walls. As shown, the pillow is in two identical, rectangualr halves 11, 12, each half being in the form of a slab, hollow on one face and with regularly arranged cylindrical columns 16 and an uninterrupted side wall 15. The columns and side walls of each half are in register for correction to each other by adhesive on the plane 13, 14. In modifications the columns are of polygonal &c. cross-section and the halves are each secured to an intervening, flexible sheet of hessian &c. Hair or other fibrous material may be added to the foamed material.
Patent GB-230131-A (GB)
Title: Improvements in machines for levelling and surfacing roads
Inventor: TEED HARRY WILLIAMSON
IPC: E01C19/23
Filed: 1923-10-30
Abstract: 230,131. Teed, H. W. Oct. 30, 1923. Rollers, road.-Relates to machines for levelling and smoothing roads of the type in which the levelling-device 10, which may be a roller or tamper, is supported on a carriage frame 1 and located between the wheels or rollers 6, 7, 8, 9 on which the frame rests. According to the invention, in order to prevent the formation of undulations corresponding to the pitch of the wheels or rollers, the horizontal distance between the levelling -device and the adjacent supporting wheels or rollers is made variable by relative adjustment in a purely longitudinal direction. In the hand-operated machine shown, a smoothing roller 10 connected to the handle 13 has its axle 11 freely movable in a longitudinal slot 12 in the frame 1. The frame rests on front and rear bogies 2, 3 which oscillate in the vertical plane on pivots 4, 5. The extent of movement of the axie 11 in the slot 12 may be varied progressively by stops, the positions of which are automatically adjusted by the reciprocating movement of the frame.
Patent GB-631070-A (GB)
Title: Improvements in or relating to weighing machines
IPC: G01G23/00
Filed: 1947-10-10
Abstract: 631,070. Weighing-apparatus. ASCO, Ltd., and SHARPLEY, W. Oct. 10, 1947, No. 27212. Drawings to Specification. [Class 143] An automatic counter scale has mounted on it a mirror or mirrors whereby the customer can view the goods pan as well as the weight indicator without changing his position. In a preferred arrangement, a convex mirror is held centrally over the scale and at a suitable inclination by a pair of spaced arms secured to the top of the scale indicator housing. Provision may be made for adjustment of the mirror. An alternative arrangement comprises a pair of mirrors angularly disposed in relation to each other in a casing secured to the top of the indicator housing.
Patent GB-1427258-A (GB)
Title: Hinge fitting for a seat with an adjustable backrest particularly a vehicle seat
IPC: B60N2/02
Filed: 1973-06-07
Abstract: 1427258 Adjustable seat backs FRITZ KEIPER 7 June 1973 [7 June 1972] 27243/73 Heading A4J [Also in Division E2]  A seat, preferably for a vehicle, has an adjustable backrest carried by pivots each comprising a part 14 secured to the seat base and an adjustable part 15 secured to the backrest. Part 15 is formed with an internally toothed gear 17 which meshes eccentrically with a spur gear 16 formed on part 14 and having a smaller pitch diameter and at least one tooth less than gear 17. A pin 20 having portions 25, 26, 27 of differing diameters is welded at flange 22 to part 15, the part 25 being rotatably mounted within an eccentric bore in a part 28 is located by a step 29', formed by a portion 29, in a central aperture 24 in gear 16. The eccentric bush 21 is closed at 31 and bored to accommodate an extension 33, secured by circlip 33, of a pin 32 which carries a handle 36 and is urged to the right in Fig. 2 by a spring 38. The part 14 carries a bearing case 41 secured by screws 44 and fitting closely over part 30 of bush 21 to enclose a roller bearing 46 which has no inner cage and is mounted by an outer cage in case 41. A further roller bearing 48, also without an inner cage, is carried by bush 21 so that the bearings are eccentrically positioned one to the other. With the mechanism in the position shown in Fig. 2 with portion 28 of eccentric bush 21 engaged within spur gear 16 and over portion 25 of pin 20, resistance is such that loading applied to the seat backrest will not result in tilting movement. If, however, the eccentric bush 21 is displaced axially to the left by the handle 36 acting on pin 32 the surface of portion 29 of bush 21 will engage the rollers of bearing 46 while the rollers of bearing 48 will engage the surface portion 27 of pin 20. This results in a frictional resistance which is low whereby the seat back may be adjusted. The gearing is such that bush 21 always follows eccentric movement of pin 21 so that when handle 36 is released portion 28 will be in correct position to move into the gap 23 between portion 25 and the aperture in spur gear 16.