baber/WOPTO huggingface dataset:
Patent GB-709548-A (GB)
Title: Electrically heated screen construction
IPC: B07B1/62
Filed: 1952-10-13
Abstract: 709,548. Sieves. HANNON, T. W. Oct. 13, 1952 [Jan. 14, 1952; June 4, 1952; July 10, 1952], No. 25606/52. Class 117 In an electrically heated screen Figs. 2 and 3, the screen deck 23, which may be made of steel or stainless steel wire, is mounted in a frame comprising side members 12a and 12b which are connected by a bridge member 16 which carries an electrical vibrator 51 connected to the centre of the screen 23. A member 19a is mounted by means of an insulated hinge 20 on the side member 12a and carries a longitudinally extending bus bar 22a which is provided with a V- shaped tongue fitting into a bar 24a attached to the sifting element 23. A similar member 19b is mounted on the side member 12b. Tension is applied to the sifting element by means of bolts 34 and nuts 37 which are insulated from the bus bars by sleeves 30. Conductors 55a, 55b connect the bus bars to a low voltage supply. Figs. 10 and 11 show an arrangement in which the frame mounting the screen is vibrated. The frame comprises side plates 310a, 310b, carrying an upper screen deck 311 and a lower deck 312 which are supported in an arched position by bars 314 having moulded rubber strips 315 on their top edges to prevent chafing and provide electrical insulation, the bars 314 being supported on the transverse beams 316 attached to the side plates. Longitudinal members 320 having an out-turned flange 322, which is covered with an insulating material 323, tension the screen cloth, the tension being adjusted by spring-loaded nuts 328. Contact bars 331 extend the length of the screen and are carried on angles 319 attached to the side plates, being insulated from the angles by fibre strips 334, and bus bars 337, 338, are connected to the respective bars 331. The bus bars are insulated from each other and from the side plate by fibre sheets 352, 353, and are secured by a bolt 354 provided with an insulating sleeve. They are carried in the bottom of the sieve frame in a channel member 356 which is lined with fibre strips, and are connected by cables 351 to the supply. A number of bus bars may be connected to each contact bar to ensure uniform heating.
Patent GB-412071-A (GB)
Title: Improvements in document files
IPC: B42F7/14
Filed: 1933-09-15
Abstract: 412,071. Friction - grip fastenings. SOC. MONCLASSEUR, 56, Boulevard de la Villette, Paris. Sept. 15, 1933, No. 25612. Convention date, Sept. 15, 1932. [Class 44.] A device for fastening the sides 21, 22 of a filing-box comprises a tubular part 18 on the side 2<2> adapted to be engaged by spring-pressed balls 16 riding on a conical member 15 and projecting through slots in an enclosing member 15<1> fixed to the side 2<1>. The fastening is released by inserting a key 20 into the tube 18.
Patent GB-1317430-A (GB)
Title: Method of and apparatus for continuous progressive hardening of a thinwalled steel product such as the trough of a mine scraper conveyor
IPC: C21D9/00
Filed: 1971-11-12
Abstract: 1317430 Heat treatment RYBNICKA FABRYKA MASZYN RYFAMA 12 Nov 1971 [14 Nov 1870] 52619/71 Heading C7N A thin-walled steel sheet product 8 is progressively hardened by passing the sheet close to heating coils 1 located on one side of the sheet, then spraying the opposite side of the sheet with a coolant from nozzles 5 after which the side closest the heating coils is sprayed by nozzles 4, the spraying on opposite sides preventing alteration of the shape of the product. The distance between the nozzles 4 and 5 may be regulated by an adjusting mechanism 10.
Patent GB-1106847-A (GB)
Title: Improvements in or relating to transistor amplifying circuits
IPC: H03F3/30
Filed: 1965-06-17
Abstract: 1,106,847. Transistor amplifiers; pulse modulation circuits. PHILIPS ELECTRONICS & ASSOCIATED INDUSTRIES Ltd. 17 June, 1965 [20 June, 1964], No. 25676/65. Headings H3T and H4L. In an amplifier having a diode d 1  connected between the collector of a first transistor T 1  and the emitter of a second transistor T 2  which is also connected to a load circuit B 1 , B 2 , the collector of the first transistor T 1  together with the base of the second transistor are connected via a common resistor R 2  to a rectifying circuit C 2  and d 2  connected to the load circuits. As shown, a P.W.M. input signal is applied at 10, 12 via a differentiating network R 1 , C 5  to the base 6 of the transistor T 1 . To ensure that the circuit will start to operate the capacitor C 3  must be negatively charged and this is arranged by connecting point 16 via a resistor R 3  to a negative supply. Negatively going input pulses cause the transistor T 1  to conduct which allows a current to pass through the diode d 1  to the load, e.g. loud-speaker B 2 , and the voltage developed across the diode biases transistor T 2  off. The high-frequency voltage developed across the tuned circuit 17 is rectified by diode d 2  and charges the capacitor C 2  negative at 7. When the input pulses go positive the transistor T 1  cuts off and the negative voltage at 7 developed across the capacitor C 2  causes the transistor T 2  to conduct and a current to flow through the load. The amplifier circuit acts as a class D amplifier and as a demodulator for P.W.M. signals to provide an audio signal from the loudspeaker B 2 . A further rectifier circuit 18, d 4 , C 4  may be connected to supply the bias voltage to the base of the transistor T 1 . The amplifier may be used as control circuits for electric motors or relays. In an alternative circuit (Fig. 1, not shown), the input 10, 12 is connected to a high- and low-frequency A.C. composite signal.
Patent GB-989526-A (GB)
Title: Improvements in or relating to information reproducing systems
IPC: G11B7/24
Filed: 1963-06-27
Abstract: 989, 526. Recording and playback using scintillation processes. AMPEX CORPORATION. June 27, 1963 [July 26, 1962], No. 25679/63. Heading G5R. [Also in Divisions H1 and H4] A record member, stated to resolve information up to 50 mc/s, comprises an aluminium layer 20, optically opaque but transparent to a modulated recording beam of electrons; a layer of scintillating material 18, preferably plastic and consisting principally of (1. 4 Di 2[5 Phenyloxazolyl] Benzene), terphenyl and polyvinyl toluene; either a Lippmann emulsion 14, sensitive to the electron beam and an optically transparent aluminium antielectron-scatter layer 16 or a fine-grain photographic emulsion layer, 14 only; and a base layer 12 of optically transparent terephthalate plastic. An alternative record member, Fig. 2, comprises a mixture of scintillator and emulsion 22 on the base layer 16. The record member 32 is mounted in a vacuum enclosure 28 with access means 36 and scanned with a beam 40 over a single or frame-by-frame raster by means 43. On recording, the light emitted in layer 18 exposes the layer 16 if photographic and proceeds to a photomultiplier 30 for simultaneous monitoring of the input signal, after which the film is developed to a light-and-shade pattern in the layer 16. On playback, an unmodulated beam activates the layer 18 and the emitted light, modulated by the developed layer 16 proceeds to the photomultiplier 30. The systems 28 and 30 may share the same vacuum.
Patent GB-1209528-A (GB)
Title: Small electric motor commutator brushgear
IPC: H01R39/38
Filed: 1968-05-29
Abstract: 1,209,528. Electric motor brushgear. PHILIPS GLOEILAMPENFABRIEKEN N.V. 29 May, 1968 [1 June, 1967], No. 25721/68. Heading H2A. In a small electric motor commutator brushgear wherein spring-loaded carbon brushes 11 are slidably arranged in tubular metal brush holders 9 mounted on an injection-moulded thermoplastic synthetic resin supporting plate 8, the holders are firmly held on, and are resiliently urged against other parts of the supporting plate, by bridge members 10 integral with the plate. The latter also has integral projections 18, 19 which during assembly respectively guide and stop the holder, which is either sawn tubing or a shaped metal strip. The loading spring 12 is helical and compressed in the holder by a resilient clip 13, e.g. of phosphor bronze retained solely by portions in holder openings 16, 17. The plate has a clamping fit on stator core pins 5, and carries stator coil lead soldering tags 22.
Patent GB-616109-A (GB)
Title: Improvements in or relating to high frequency cables
IPC: H01B7/00
Filed: 1946-08-28
Abstract: 616,109. Electric cables. AVANESSOFF, I. Aug. 28, 1946, No. 25730. Convention date, Dec. 14, 1943. [Class 36] High-frequency electric cables of the type containing a number of fine enamelled or otherwise insulated wires are impregnated, by capillary effect, with an insulating composition having adhesive properties which serves to bond the strands together and to form an outer insulation layer. The insulant may be of phenolic resin which is polymerised after the impregnating process to give the desired flexibility and surface insulation to the cable. Impregnation may be effected by passing the bunched strands of wire, either laid lengthwise or twisted, through a bath containing the insulant. The process may be accelerated by employing an air-tight tank connected to a source of compressed air. Excess insulating material may be removed by passing the cable through a die which, in addition, provides a smooth outer surface.
Patent GB-951814-A (GB)
Title: Binaural tape-gramophone pick-up for playing sound record tapes
IPC: G11B3/00
Filed: 1961-07-17
Abstract: 951, 814. Stereo tape gramophones; reducing pick-up vibrations. TEFI WERKE G.m.b.H., [trading as TEFI WERKE G.m.b.H. & CO.KOMM.- GES.]. July 17, 1961 [Sept. 15, 1960], No.25757/61. Heading G5R. To reduce transducer vibrations in a compatible stereophonic tape gramophone, the pick up transducers are enclosed in a moulded case integral with an angular frame 12, 13, 14 which bears on a metal guide-rod 10 and carries an armature 19, urged by a transverse-field stationary barmagnet 21 in a direction to engage the stylus 18 with the sound-drum supported tape 1. The combined pivoting-sliding joints on the rod 10 reduce rumble. To reduce high-frequency vibrations, the armature is either of a magnetic material of intrinsic high loss-factor at the higher vibration frequencies, or it may be of normal magnetic material and coated or plated with a good electrical conductor in which damping eddy currents are induced at the higher frequencies.
Patent GB-601547-A (GB)
Title: Improvements relating to bearings
IPC: F16C41/02
Filed: 1945-10-03
Abstract: 601,547. Bearings. POWER JETS (RESEARCH & DEVELOPMENT), Ltd., and COWAN, H. Oct. 3, 1945, No. 25765. [Class 12 (i)] A shaft bearing arrangement comprises a plurality of bearing elements each mounted in one of a plurality of nested coaxial sleeves with each sleeve engaging at one end against a closely confined pad of resilient material whereby the bearing elements share the axial thrust load in predetermined proportions. The bearing arrangement shown comprises two ballbearings 4, 5 each carried in a sleeve 6, 7 extending axially to engage against a rubber ring 10 wholly filling an annular space formed by a co-operating end plate 16 which is secured, together with a housing 11 for the complete bearing arrangement, by bolts to the frame or other support 12. The rubber ring in effect sets up a uniform pressure so that the end thrust taken by each bearing is proportional to the end area of the sleeve or to the end area of an interposed ring 9 as in the case of bearing 5 and its sleeve 7. The radial thrust is taken wholly by the bearing 4 since its sleeve 6 at the region of the bearing engages against the housing 11 whereas sleeve 7 is freely movable radially as it is radially spaced from sleeve 6 and the housing 11. The radial load may be divided in predetermined proportion by having the sleeve 7 engage the sleeve 6 at the region of the bearing 5, the proportion being then determined by the elasticity characteristic of the sleeve 6 which at this region is slightly spaced from the housing 11. For ensuring that the rubber ring wholly fills the annular space, the end plate is spaced by suitable shims 14.
Patent GB-310492-A (GB)
Title: Egg preserver
IPC: A23B5/00
Filed: 1928-09-07
Abstract: 310,492. Clauss, W. F. April 27, 1928, [Convention date]. Preserving eggs.-Eggs are kept in fresh condition by mounting them in rows in separate and independent holders carried by shafts or other rotatable supports. The shafts b may be mounted in a cupboard a and the eggs i are carried by wire holders h, which are detachably mounted in holes g in the shafts. The outer ends of the shafts have pulleys c by which they are simultaneously rotated through an angle at intervals of, for example, a day to change the positions of the eggs, the pulleys being connected by a driving belt d and the central pulley having an operating handle e provided with a pointer which moves over a graduated dial f mounted on the cupboard a. Gear wheels or other transmission means may alternatively be used to drive the shafts, which in the larger types may be power-driven.
Patent GB-811826-A (GB)
Title: Portable radio receivers and like instruments and handles therefor
Inventor: TAYLOR ROY PICTON
IPC: H04B1/08
Filed: 1957-08-15
Abstract: 811,826. Automatic catches. BURNDEPT Ltd. Aug. 15, 1957, No. 25838/57. Class 44 [Also in Groups XIV and XL(c)] A handle 3 carried on a stem 4 can be pushed against the pressure of a spring 11 to be housed in a recess on a wireless &c. cabinet in which position it is held by a catch, release being effected by pushing it again in the same direction. As shown, the catch is a pivoted cam 8 carried by stem 4 and when it reaches the bottom of its stroke, a fixed abutment 13 engages face 15 on the catch to tip it to the position of Fig. 2, and, on release, the spring 11 causes face 18 to co-operate with a second fixed abutment 12 to hold the handle retracted and to cause the bottom of the catch to clear abutment 13. To free the catch, the stem is pushed down again and abutment 13 tips it over so that the top lies entirely under abutment 12 whereupon spring 11 can raise the stem and handle. In a modification, the handle is carried on two stems interconnected by a shaft and rack and pinion mechanism, the catch being pivoted on a stationary axis and the abutments being on the sliding parts.
Patent GB-596385-A (GB)
Title: Improvements in hinges
IPC: E05D3/02
Filed: 1944-12-23
Abstract: 596,385. Hinges. WALLIS & CO. (LONG EATON), Ltd., and CROWE, N. J. Dec. 23, 1944, No. 25851. [Class 65 (ii)] Concealed hinges.-A hinge comprises a plate 5, formed with an aperture between two lugs 5b which carry the hinge pin, and a plate 1 having one end portion straight, for attachment to a door or other member, and bent at 1a near the other end to an arc concentric with the hinge axis, the bent portion passing through the aperture in the plate 5 and ending in a straight return portion to receive the hinge pin. The plate 1 may have a projection 4 to locate it on the door.
Patent GB-333753-A (GB)
Title: Improvements in or relating to piston mechanism
IPC: F16J1/14
Filed: 1929-08-26
Abstract: 333,753. McNaught, C. J. Aug. 26, 1929. Pistons; connecting- rods. - To insert a piston into a cylinder, a rod is screwed into the connecting-rod or the gudgeon-pin and the piston slides over this into the cylinder, the rod passing through a hole in the piston. In a piston in which the gudgeon - pin is attached to the piston by screws b<1>, b<2>, the rod is screwed into one of the holes in the gudgeon-pin and passes through the corresponding hole in the piston. For tightening or loosening the screws b<1>, b<2>, the straddle bar F is mounted on the cylinder head, the ends of the bolts h<1>, h<2> serving as screwdrivers on the. pinheads.
Patent GB-259999-A (GB)
Title: Manufacture of stable preparations of vat-dyestuffs
IPC: C09B67/28
Filed: 1926-10-18
Abstract: 259,999. I. G. Farbenindustrie Akt.- Ges., (Assignees of Farbwerke vorm. Meister, Lucius, & Br³ning). Oct. 17, 1925, [Convention date]. Dye preparations.-Stable preparations of vat dyestuffs are made by intimately mixing the dry dyestuff with a dry alkali-starch preparation, with or without the addition of a wetting or dispersing agent and a hydrosulphite, or either of them. The alkali-starch preparation may be made by mixing starch with caustic soda solution and drying in vacuo; the preparation of an alkali-starch containing 39 per cent caustic soda is described. In examples (1) di-p-chloranilido-benzoquinone is mixed with alkali-starch; the preparation thus obtained gives a clear vat when dissolved in warm water with the addition of a wetting agent, e.g. sodium sulphoricinoleate and hydrosulphite, (2) indigo-paste is evaporated to dryness with sodium ligninesulphonate, and the mass is ground with alkali-starch and hydrosulphite, (3) the brown vat dyestuff obtained by the process described in Example 2 of Specification 19599/12 is evaporated to dryness with sodium sulphoricinoleate and ground up with the alkali-starch and hydrosulphite, and (4) thioindigo red powder containing 10 per cent sodium sulphoricinoleate is ground up with alkali-starch. The Specification as open to inspection under Sect. 91 (3) (a) states that other alkalies, e.g. sodium carbonate, may be used in making the alkali-starch preparation. This subject-matter does not appear in the Specification as accepted.
Patent GB-320209-A (GB)
Title: Refining balata or gutta percha for golf ball manufacture
IPC: C08C3/02
Filed: 1928-09-11
Abstract: 320,209. Penfold, A. E. Sept. 11, 1928. Guttapercha and balata, purifying.-Guttapercha or balata is purified by shredding the raw product, washing out the greater portion of the impure matter with cold or cool water, deresinating by agitation in a cold solvent such as petro leum spirit, forming a solution in a warm solvent. separation of the rest of the impurities by settling, and precipitation of the pure product by cooling the solution.
Patent GB-597973-A (GB)
Title: Improvements in or relating to apparatus for making rustic bricks
IPC: B28B11/06
Filed: 1945-10-06
Abstract: 597,973. Rusticating and sanding moulded bricks. BRISCOE, H. Oct. 6, 1945, No. 26074. [Class 87 (ii)] The apparatus described in Specification 503,028 for rusticating wire-cut bricks is modified to make it suitable for dealing with pressed bricks, by providing guide plates 11, 12 to retard the movement of the bricks so as to maintain them in a closed column formation in their movement through the apparatus. One plate 12 is spring loaded and the other fixed. The bricks are placed one behind the other on a conveyer 10, passed between the plates 11, 12, roughened at 13 by a saw-tooth scraper or a wire brush, watered at 14, roughened again at 15 by brushes or jets of air or steam, watered again at 16, sanded at 20 and passed under a smooth, oblique roller 34 and between side rolles 45. Resilient pressure is applied to the rollers. Sand is spread over the sides of the bricks by resiliently-mounted spreader plates 31 to which the sand is fed by brushes 29. The conveyer 10 may carry the bricks right through the apparatus.
Patent GB-205822-A (GB)
Title: Improvements in or relating to change-speed mechanism
IPC: F16H29/04
Filed: 1923-10-19
Abstract: 205,822. Rouyer, P. G. J. Oct. 23, 1922. [Convention date]. Variable-speed and reversing ratchet gearing comprising a driving cam 5, Figs. 1, 2, 3, which is variable in throw and has two swells so as to act twice per revolution. This cam oscillates levers 65 which through ratchets 62 drive countershaft gears 9 continuously. Each cam comprises two expansible parts 25 thrust out positively by sliders, racks 12 and sectors 13 controlled by a sliding sleeve 16 and lever 19. Alternatively the two-phase cam may be of cone form as shown in Figs. 4, 6 and slidable axially to vary the throw. Forward driving is effected through a central gear 11 and reverse driving through an internally-toothed gear 67. These gears 11, 67 are slidable on a driven shaft 3 alternatively into mesh by raising and lowering a handle 73, which acts through two bell-crank levers.
Patent GB-1319876-A (GB)
Title: Data reading satellite station for communication with a central  data bank
IPC: G06Q40/00
Filed: 1971-04-19
Abstract: 1319876 Credit card systems AMP Inc 19 April 1971 [27 April 1970] 26184/71 Heading G4T A data reading and transmission system for use with credit cards includes a central data storage station and at least one communicating data reading satellite station, the latter comprising a card reader/imprinter 4, a scanner 1 for scanning read data and a receiver 12, frequency detectors f1-f4 and bistable devices 14, 21, 24, 25 which cause operation of scanner 1 on receipt of signals of a first frequency from the central station and subsequently the operation or otherwise of the imprinter depending on the frequency of a further set of signals transmitted by the central station. In operation of the embodiment shown, a card and invoice are inserted in reader/imprinter 4 with scanner 1 in its home position H and in response to this and a present or previous dialling of the central station by an operator which results in a reply tone on line T, both inputs of AND gate 13 are energized. The reply tone which is of frequency 1 sets bistable device 14 and energizes a second input of AND gate 11 with consequent operation of scanner 1 via OR gate 15 and control 40. Movement of the scanner through position R resets bistable devices 14, 21, 24, 25 and 27. Stations 2-8 which include "start" and "end of message" stations 2, 8, an "address" station 3 and a "purchase or refund" station 6 as well as reader/imprinter station 4 are subsequently scanned, the scanned signals being shunted successively to a decoder 17, for translation into touch tone code, an oscillator 16 and an amplifier 18. In the wait position W of the scanner one inlet of AND gate 20, which feeds frequency detectors f2-f4, is energized. Reply by the central station to the scanned signals energizes the other inlet of gate 20 and if the reply is of frequency range f2, lamp 44 lights to indicate that credit is "good" and the imprinter operates to imprint data from the card on to the invoice. If the reply is of frequency range f3, lamp 46 is lit to indicate that there is doubt about credit and no imprinting occurs and if of frequency range f4 lamp 47 is lit to indicate that credit is "bad" and again functioning of the imprinter is inhibited. In each case the scanner is returned to its home position H. Stations 3 and 6 may be set by a manual switch system and if no reply is received within a predetermined time, a timer 56 resets the satellite station throughout. In a second embodiment, Fig. 2 (not shown) touch tone operation is replaced by modern operation and the apparatus incorporates a three-level decoder 37.