baber/WOPTO huggingface dataset:
Patent GB-707081-A (GB)
Title: Electrical communication system
IPC: H04J1/10
Filed: 1951-06-26
Abstract: 707,081. Automatic volume control. WESTERN ELECTRIC CO., Inc. June 26, 1951 [July 26, 1950; July 26, 1950], No. 15126/51. Class 40 (4) In an electrical communication system comprising spaced repeaters along a signal transmission path and a compandor, the increase in circuit quality arising from the compandor is dispensed with in order to economise in circuit components, e.g. by increasing the spacing between repeaters and by easing the discrimination requirements of filters. Further economies suggested include the use of inferior exchange lines, dispensing with anti-cross-talk balancing arrangements and noise suppression coils, and the use of permeable core coils. The compressor, Fig. 2, comprises four series resistances 54 and four germanium varistors 55 in shunt across the amplifier 51, the varistors being biased according to the input envelope by.the rectified current in the feedback path. A filter 53 suppresses harmonics and a condenser C7 prevents low frequency oscillation. The expander, Fig. 3, comprises varistors 76, 761 in the input to an amplifier 74 controlled by the rectified output of a parallel-fed control valve 72. Current I 1  controls the varistors 76<SP>1</SP> at low input levels and a current I 2  which is opposed by a 130 V. back bias becomes effective at higher inputs. In the 12 channel system, Figs. 10-12, terminal A transmits a band of 164-260 Kc. and terminal B a lower frequency band 44-140 Kc. and the bands are interchanged at each repeater station. This frequency interchange inverts the order of the channels and renders equalisation unnecessary. Speech from a trunk line is applied over a hybrid arrangement 4W and a compressor 21 to a channel modulator 22, and the resulting side bands are transmitted to line with the unmodulated carrier which is obtained by unbalancing the modulator by a D.C. potential applied at a point 18. A filter 49 removes unwanted harmonics from the outgoing signal before it is amplified in the group amplifier 45, and a noise generator 45<SP>1</SP> serves to mask any cross-talk. Signals in the two directions are modulated on a 304 Kcs. oscillation in modulators 53 at each repeater 50, 51, and the required outgoing bands are selected by filters D or B according to the input frequency band. Two-way signalling is effected by interrupting in a signalling unit 40 a 3,700 cycle/s signal which is normally permanently connected to the line. An incoming signal at terminal B, Fig. 12, is selected by its appropriate channel filter 60 from a group receiver 61, the volume is regulated in automatic gain control unit 61<SP>1</SP>, and, after demodulation in 62, the intelligence signal is selected by a low pass filter 63 and passed to an expander 65. The 3,700 cycle/s signal is detected in a receiver 64. Curves indicating filter and amplifier requirements with and without compandors are described with reference to Figs. 4-7 (not shown).
Patent GB-540036-A (GB)
Title: Improvements in or relating to accumulators for hydraulic power systems
IPC: F15B1/12
Filed: 1940-10-11
Abstract: 540,036. Hydraulic accumulators. VICKERS, Inc. Oct. 11, 1940, No. 15156. Convention date, Dec. 18, 1939. [Class 69 (ii)] An air-loaded accumulator for a hydraulic power system which is especially applicable for systems on aircraft in which a pump actuates a fluid-pressure motor, is constructed of two substantially hemispherical cups 28, 42 connected by screw threads and provided with a flexible impervious diaphragm 44 clamped between the cups which are formed adjacent their edges with conical wall parts 88, 90 merging into complementary threaded thickened cup rims 58, 60. The rim 58 with the internal thread is provided with a shoulder 66 which abuts against the inner edge of the threaded portion of rim 60. The rim 60 has a re-entrant flange 68 abutting against the outer edge of the rim 58. When the oil or other liquid in chamber 48 and air or other fluid in chamber 46 are under pressure forces tending to separate the cups act along the lines 88, 90, which intersect at the mid-portion of the rim threads 62, 64 preferably at or near the pitch line of such threads, and such arrangement prevents damage to the threads. The diaphragm 44 is formed of neoprene or similar oil-resisting substance, and with corrugations which deepen towards the periphery. The rims 58, 60 are formed with holes 82 for a reception of a spanner, and one pair of such holes is provided with cross bores 84 to receive fastening wires. The diaphragm 44 at its periphery is T-shaped, and this forms a tight seal with annular recesses 70, 72 in the rims 58, 60.
Patent GB-1460178-A (GB)
Title: Selective reclamation of waste paper constituents
IPC: D21B1/32
Filed: 1974-04-05
Abstract: 1460178 Wet separating BLACK CLAWSON CO 5 April 1974 [6 April 1973] 15160/74 Heading B2H [Also in Division D2]  To recover two different fibrous constituents of waste paper, such as corrugated paper comprising NSSC and a kraft liner, having different degrees of defiberability, the waste paper is first pulped in water until the majority of one constituent is defibred but the majority of the other is not, then the resulting mixture is screened such that one fraction containing the majority of the more-readily debfired constituent is passed through the screen as a slurry, the other fraction containing the majority of the less readily defibred constituent being removed by the screen and then subjected to further defibering. The method may be operated as a continuous process (Fig. 1) or a batch process (Fig. 2 not shown). For the continuous process two pulpers 10, 30 are used as shown. The waste paper is first pulped for about one minute in pulper 10, junk being removed by a screen 12 and junk remover 15. The remaining mixture is fed, via cyclone 22 to remove heavies, to a vibrating screen 23 having # in. holes. The majority of the more-readily defibred constituents, e.g. the NSSC, is accepted by the screen 23 and is processed at stations 24-26. The other fraction containing the majority of the less readily defibred constituent, e.g the Kraft liner, is passed by the screen 23 to the other pulper 30 where an overflow device 33 removes floating trash such as plastic. This fraction after pulping is processed by stations 41-44. A fine fraction may be separated by the screening station 42 and passed on line 45 back to station 25. In the batch process (not shown) the pulped mixture is screened into the two fractions by a perforated extraction plate (52) at the outlet of the pulper (50).
Patent GB-1423192-A (GB)
Title: Arrangement for the exact positioning of a movable part
IPC: G05D3/12
Filed: 1973-03-29
Abstract: 1423192 Automatic control of position COMPAGNIE HONEYWELL BULL 29 March 1973 [5 April 1972] 15215/73 Heading G3N A movable part produces signals corresponding to identifiable locations just before the locations are reached and when the signal corresponding to the desired location is generated the drive is stopped. Displacement of the movable part produces four sinusoidal signals A, A, B, B is phase quadrature, the passage of these signals through zero in the positive direction defining the identifiable locations. Pulses J are generated each time the signals are between -S and +S and represent the distance from 4N-E to 4N+E where 4N is the identifiable position. These pulses J are fed to a "difference of address register" into which the desired location is pre-set and when the register content reaches zero a signal is transmitted to speed-control and displacement control devices to stop the motor drive. As this signal is emitted a distance E before the desired position, this can be obtained without overshoot. The system may be used for positioning magnetic track heads.
Patent GB-126019-A (GB)
Title: Improvements in or relating to Generation of Sustained Electric Oscillations for Use in Wireless Telegraphy and Wireless Telephony.
Inventor: BETHENOD JOSEPH
IPC: H03B13/00
Filed: 1916-10-26
Abstract: 126,019. Bethenod, J. Nov. 5, 1915, [Convention date]. Non-contact-making relays. - Alternating-currents are amplified by means of a vacuum tube having a cathode 2 and two anodes 5, 5', between which the cathode beam oscillates by the action of an electric field between two plates 4. 4<1> placed adjacent to the beam, or by an electro-magnetic field, or by both. According to the Specification as open to inspection under Sect. 91 (3) (a), the variable electric or electromagnetic field or both is produced by the alternating-current to be relayed. This subjectmatter does not appear in the Specification as accepted.
Patent GB-943985-A (GB)
Title: Improvements in or relating to electroluminescent devices
Inventor: RIGDEN SYDNEY ALFRED RICHARD
IPC: H05B33/28
Filed: 1961-04-27
Abstract: An electroluminescent device has a light-transmitting film electrode provided by a multilayer film comprising a layer of bismuth oxide on the surface of a transparent base member and a layer of gold on the bismuth oxide layer.  The bismuth oxide layer can be between 100<\>rA and 500 <\>rA thick and the gold layer between 70 <\>rA and 150 <\>rA thick and formed by sputtering.  A second layer of bismuth oxide, of about the same thickness as the first layer, can be formed on the gold layer.  The multi-layer film electrode can extend over part only of the transparent base member, by sputtering through a mask, to form a display device. The base member can be of glass or methyl methacrylate and a layer of insulating material, e.g. "Paralac 10" (Registered Trade Mark), of high dielectric constant can be formed between the phosphor layer and the other electrode.  The transparent base member can be in the form of flat or curved plates or in the form of hollow members, e.g. a hollow glass cylinder filled with dry nitrogen at atmospheric pressure on the inside surface of which the layers are formed by sputtering through a mask as described in Specification 915,568, to form a display legend. The second electrode can be of aluminium paint and connections to the electrodes can be made through the ends of the cylinder.  The phosphor layer and the second electrode can be formed by an evaporation process.
Patent GB-784057-A (GB)
Title: Chrominance subcarrier component selection system
IPC: H04N9/26
Filed: 1954-09-06
Abstract: 784,057. Television. HAZELTINE CORPORATION. Sept. 6, 1954 [Oct. 5, 1953], No. 15298/56. Divided out of 784,055. Drawings to Specification. Class 40 (3). - The description is the same as that contained in Specification 784,055, the claims being directed to the feature of translating components along desired axes of the colourmodulated sub-carrier wave whilst shunting all components along axes in phase quadrature thereto, as described in connection with the embodiments of Figs. 2, 3 and 4. Specification 772,791 also is referred to.
Patent GB-476295-A (GB)
Title: Improvements in insulators for high tension electric lines
IPC: H01B17/22
Filed: 1936-06-02
Abstract: 476,295. Supporting conductors. COMPAGNIE GENERALE D'ELECTRO CERAMIQUE. June 2, 1936, Nos. 15302 and 15303. Convention dates, May 31, 1935 and July 23, 1935. [Class 36] To prevent radio interference from an insulator 2, Fig. 1, having a high tension conductor 1 secured thereto by a binding 3, the binding and the bound portion of the conductor are enclosed in a metal cap 4 devoid of sharp edges, the cap being filled with an insulating- material providing intimate connection between the cap and the insulator. In a modified construction, Figs. 3 and 4, the insulator 5 has a metal cap 6 intimately connected thereto, the cap carrying a clamp which holds the conductor 9. The cap and the clamp are devoid of sharp edges and extensions 7, 8 are formed on the jaws of the clamp to shield the clamping bolt, so that glow discharge on the sharp edges of the bolt is prevented. In other constructions the bolts are disposed in recesses in the clamp.
Patent GB-1012986-A (GB)
Title: Process for the manufacture of 4,5-dichloro- and 4,5-dibromo-naphthalene-1,8-dicarboxylic acids and their anhydrides
IPC: C07C63/72
Filed: 1963-04-18
Abstract: 4,5-Dichloro- and 4,5-dibromo-naphthalene-1,8-dicarboxylic acids and anhydrides are made by dissolving 1,4,5,8-naphthalene-tetracarboxylic acid or the anhydride thereof in water with the addition of an alkali metal hydroxide, carbonate, acetate or phosphate and the solution obtained is reacted within a pH-range from 4 to 6.5 at a temperature within the range from 10 DEG  C. to 70 DEG  C. with chlorine or bromine or an agent which releases chlorine or bromine under such conditions, e.g. a sodium hypochlorite liquor or N-bromosuccinimide. Detailed examples are given.
Patent GB-1214788-A (GB)
Title: Apparatus for mechanically and electrically connecting electrode plates
IPC: H01M4/23
Filed: 1969-03-24
Abstract: 1,214,788. Connecting electrode plates. SOC. INDUSTRIELLE DU CAOUTCHOUC S.A. 24 March, 1969 [6 May, 1968], No. 15391/69. Heading H1B. An apparatus for mechanically and electrically connecting electrode plates for storage batteries during the forming step is characterized by a gripper 7 which is applied to lugs 3, 4 of electrode plates 5, 6 to connect the lugs to a current-carrying terminal bar 2 between the lugs. The gripper 7 is preferably made of acidresisting material such as hard rubber or plastics and preferably consists of two hinged plates 11, 12 which are provided with gripping jaws at their lower ends. The jaw distance of the gripper can be adjusted by a chucking wedge 8 to the width of the plate lugs 3, 4. The terminal bar 2 which is preferably of lead can be mounted on a ribbed plate 1 of the forming vessel.
Patent GB-1281481-A (GB)
Title: Production of trichloroethylene
IPC: C07C17/04
Filed: 1970-04-01
Abstract: 1281481 Trichloroethylene and perchloroethylene SOLVAY & CIE 1 April 1970 [8 April 1969] 15392/70 Heading C2C A trichloroethylene-perchloroethylene mixture containing a larger proportion of trichloroethylene than perchloroethylene is obtained by the chlorinating pyrolysis of 1,2-dichloroethane, with the recycling of dichloroethylenes and, optionally, trichloroethylene, in the presence of a diluent in a fluidized bed oven, the oven temperature and pressure being maintained at 390-150‹ C. and above 8 kg/cm.<SP>2</SP>, the chlorine: dichloroethane molar ratio being 2À15 to 2À35, the chlorine: C 2  chlorinated hydrocarbon molar ratio being 1À3 to 1À7, and the total quantity of recycled di- and tri-chloroethylenes being 0À35 to 0À65 moles per mole of fresh dichloroethane introduced into the oven. Carbon tetrachloride may be used as diluent.
Patent GB-1059549-A (GB)
Title: A method and apparatus for conveying bobbins carrying thread remnants and having trailing threads
IPC: B65H73/00
Filed: 1964-04-14
Abstract: 1,059,549. Conveyers. STUTZ & CIE. April 14, 1964 [May 1, 1963], No. 15395/64 Heading B8A. [Also in Division D1] Bobbins having thread remnants thereon and trailing threads are conveyed, from for example looms, to a bobbin stripping machine along a zigzag-shaped path in groups and then individually, with the trailing threads being severed by cutting devices positioned at the bends or buckling points of the path. A trough 7 receives bobbins directly from a loom, or via a conveyer 5 or other lifting device. A grab rake having fingers 13 protruding through a grate 10 formed of a plurality of rods 11 pushes groups of bobbins out of the trough and down shoot 15 while similar rakes push groups of bobbins out of troughs 16, 25 on to conveyer shoot 33. Scissor beams 17, 28 and 34, which are reciprocated by crank-shaft 60 and are positioned below the end of grates 10 &c. out of engagement with the bobbins, sever the trailing threads. The grab-rakes are reciprocated in rails 39 by crank-shaft 44 through rods 48, 53, 52 and 55 &c. The conveyer shoot 33 is divided by a central wall into two parts, each having a slot (67) or (68) Fig. 5 (not shown), through which protrude fingers 69 or 70 mounted on an endless chain to lift individual bobbins up the shoot. The fingers 69, 70 may have protective caps while the bottom end of shoot 33 has flaps 87 to allow entry of the fingers but not exit of the bobbins. Alternatively the fingers may be fork-shaped with corresponding slots (94), Fig. 6 (not shown), in the bottom end wall. Bobbins may be aligned in the bottom of the shoot by laterally oscillating jaws 100 or by arms projecting into the shoot from above and which lift the bobbins a short way up the shoot or by endless bands running parallel to the transporting direction. At the top of shoot 33 the side walls become steeper while slots (67), (68) widen to allow the shaft of the bobbin to fall through into a vertical position. The bobbins slide down one of two shoots 102 to be seized by discs 104 which feed the bobbins to the vertical feeding shafts 112 of a bobbin stripper. Cutting device 120 is provided adjacent shoots 102 and has a thread catcher 116 reciprocated in slot 129 by eccentric 118 acting through arm 117. Photocells 122, 123 cause parts of the machine to be stopped if shoots 102 or 33 respectively, become blocked. As a modification, instead of a double shoot 33 with two chains 69, 70 and two shoots 102, there may only be a single shoot 33 and one shoot 102. Further cutting devices may be provided adjacent horizontal bends of the zigzag path.
Patent GB-155513-A (GB)
Title: Improvements in washing machines
IPC: D06F13/02
Filed: 1920-06-08
Abstract: 155,513. Davis, G., (Ritz, F.). June 8. 1920. Washing-machines with rotary dollies. - The rotary oscillating wooden agitator, slidingly keyed upon an oscillating vertical shaft 6 within a tub, has several blades 4 extending radially in vertical planes from a central boss, and connected by fillets 5. The driving-shaft, which passes through the bottom of the wash-tub 1, is oscillated by an electro-motor 10 through a worm 11, worm-wheel 12, and link-work 14, 15, 16 operating a quadrant 17. There are slots between the upper and lower surfaces of the radial blades of the agitator, which can adjust itself vertically on the central shaft.
Patent GB-759557-A (GB)
Title: Improvements in or relating to roof supporting structures and particularly mine roof supports such as pit props and arches
Inventor: GERLACH KARL
IPC: E21D11/22
Filed: 1954-05-25
Abstract: 759,557. Mine roof supports. GERLACH, H. May 25, 1954, No. 15415/54. Class 20(2). A pit prop or arch support 1 is fitted into and clamped by a member 2 which is of flanged channel - shaped cross - section wherein portions of the lateral flanges 6.have been displaced to provide lugs or bearings 7 to receive tightening means such as a wedge 8. As shown, two sets of lugs 7, 71 are provided, and the member 2 is made by welding together two opposed angle irons 5 to the cheeks of a U-section iron 3. The lugs 7, 7<SP>1</SP> are formed by cutting and then bending back portions of the lateral flanges 6. The holes in the lugs are formed by stamping, and stamped-out wedges 8, 8<SP>1</SP> having sharpened and hardened edges are driven through the holes to clamp the prop &c. 1. An additional member 10 of U-section iron is fitted within the member 2, and the lower ends of both members are mounted in a baseplate 12 between shoulders 11.
Patent GB-462367-A (GB)
Title: Improvements in devices for agitating fluid matter to produce froth
IPC: A47J43/12
Filed: 1935-05-27
Abstract: 462,367. Mixing and agitating apparatus; aerating liquids. NAAMLOOZE VENNOOTSCHAP INGENIEURS-BUREAU VOOR PATENTE - EXPLOITATIE. May 27, 1935, No. 15417. Void. Convention date, May 26, 1934. [Class 86] [Also in Group VI] A device for agitating fluid matter, particularly for whipping cream or eggs, comprises a double-walled vessel which receives the fluid. A mixture of air and water is forced into the jacket 2 by a water-jet injector 1. The air separates and passes, by way of a pipe 3, chamber 12, and distributer 4-6, into the fluid to agitate it. The water is continuously discharged by a waste pipe 10, so that it serves to cool the fluid. The distributer comprises a plate 6 with circular or radial openings, a porous layer 5, and a perforated layer 4. The air pressure in the jacket is controlled by a valve in the pipe 10, which valve cannot close the pipe wholly, so that there is no danger of the water in the jacket entering the pipe 3.
Patent GB-1218389-A (GB)
Title: Coin handling device
Inventor: ERICKSON GUSTAV F
Filed: 1968-04-01
Abstract: 1,218,389. Testing coins. NATIONAL REJECTORS Inc. 1 April, 1968 [15 June, 1967], No. 15594/68. Heading G4V. Apparatus for testing milled coins includes a coin rotating member rotatably mounted adjacent a coin input passageway and having a stop projecting from one side for supporting a coin in face-to-face relationship with said member, selectively operable means for enabling a coin to pass down an accept or reject passageway, and a sensing member having a milled part for engaging a coin during rotation by the coin rotating member and movable by complementary milling on the coin to operate said means enabling the coin to pass down the accept passageway on release from the coin rotating member. The coin testing device includes a rotatable disc 130 supporting a coin in face-to-face relationship on an ear 132. The coin actuates the arm 178 of a switch 174 to energize a solenoid 67 moving a member 72 to grip the coin between the free end of the member 72 and the disc 130. In addition, the switch 174 energizes a motor rotating the disc 130 and consequently the coin in contact therewith. A stud on the rear face of disc 130 releases a catch allowing a spring-loaded pivoted member 76 to move a milled disc 94 towards the coin and hold the coin between an ear 134 on disc 130 and the disc 94. The ear 132 closes a switch 142 to deenergize solenoid 67 and withdraw member 72 from the coin. The disc 94 is rotated through co-operating milling on the coin and disc to close a switch 102 through stud 96. Switch 102 withdraws a stop 170 from the coin accept channel 186. Finally, the ear 132 pivots a lever 138 moving the disc 94 away from the coin which drops into the channel 186. If a coin without milling is inserted in the testing device, the disc 94 is not rotated, whereby the switch 102 is not operated and the coin is directed by stop 170 into the reject channel 188. In a modification, the disc 130 is rotated by a customer moving a handle on a vending machine and the disc 94 has a notch in its periphery which registers with one end of a spring-loaded member when the disc 94 is rotated by a milled coin, whereby said member pivots to withdraw the other end from the coin accept channel. A spring-urged member having a stud registering with the centre of the disc 130, is cammed towards and away from the disc 130 by the ear 132 thereon, to press the coin against the rotating disc. In a further modification, the milled disc is replaced by an arcuate segment integral with a pivoted arm, the outside edge of the segment being milled to co-operate with a milled coin. The coin accept channel is normally blocked by one end of a pivoted spring-loaded member, the other end bearing against the arcuate segment.