baber/WOPTO huggingface dataset:
Patent GB-910459-A (GB)
Title: Improvements in or relating to automatic telecommunication exchanges
Inventor: HARTLEY GEORGE CLIFFORD
IPC: H04Q3/52
Filed: 1959-10-02
Abstract: 910,459. Automatic - exchange systems. STANDARD TELEPHONES & CABLES Ltd. Sept. 30, 1960 [Oct. 2, 1959], No. 46431/61. Divided out of 910,458. Class 40 (4). In an exchange including a plurality of switching stages in tandem, each stage is a co-ordinate matrix of which each cross-point switching element is a PNPN diode, the arrangement being such that the potential of any point in an established connection through the stages is at a potential close to ground potential, the operating potentials of the exchange differing from ground potential. The trunking arrangements are the same as those of Specification 794,812. To set up a connection between an A ' frame inlet and a C ' frame outlet (Fig. 4), the inlet is marked by application of +V1 (e.g. 60 volts) by operation of relay H (not shown) via resistance R1 in the first link, and the outlet by - V3 (e.g. - 5 volts) via R2 (e.g. 100 ohms) in the final link, +V2 (e.g. +35 volts) being connected as a clamping voltage to the A ' frame inlet. The route selector chooses an available route (indicated by operated relays T (not shown) in the intermediate links) and then closes its contacts TA to apply - V4 (e.g. - 45 volts) to the second link of this route. The diode DA breaks down, whereafter the route selector closes TB and then opens TA and closes TC to break down DB and DC, respectively. The rectifier in the final link then conducts, TB and TC are opened and the route selector is released. The voltage at the 'A' frame inlet drops to near - V3, and the whole connection is at a low negative potential which marks the second and third links busy. Testing and marking of the second or third link is performed by the circuit of Fig. 5. Terminal GM is grounded on all second links which can be reached from the ' A ' switch concerned, and on all third links which can connect to the ' C ' switch concerned, by group marking relays (not shown). Transistor TR1 conducts if the link is busy, and TR2 is blocked; conversely TR2 is not blocked for an idle link. Thus relay T is operated in all free links which can provide a path between the marked inlet and outlet. T locks up and marks terminal M to indicate a free link. When the route selector chooses the route to be used it connects the switching voltage over the terminals M of the links concerned.
Patent GB-1377157-A (GB)
Title: Gain control circuit
IPC: H03F3/347
Filed: 1972-10-10
Abstract: 1377157 Gain control circuits SONY CORP 10 Oct 1972 [15 Oct 1971] 46705/72 Headings H3T and H4R Signal from source 101 is applied to the base of a transistor 102 whose collector is connected to that of a second transistor 117 and to the positive supply terminal 131 via a constant current device comprising the collector to emitter path of a further transistor 105. Transistor 105 is biased by means of a potentiometer comprising resistor 156 and diode-connected transistor 151, this potentiometer being connected to the supply terminal via a further potentiometer network comprising resistor 155 and diodes 153, 154. The collectors of transistors 102, 117 are also coupled via resistors 163, 164 to the bases of a pair of transistors 161, 162 respectively, in long-tailed pair connection, having the collector to emitter path of a further transistor 172 as common emitter impedance. The base of transistor 162 is earthed for A.C. signals by means of capacitor 136, and is coupled to the base of an emitter-follower 118 which biases the bases of transistors 102, 117 via resistors 121, 122 respectively. The arrangement is used as an I.F. amplifier, an output being taken from the collector circuit of transistor 162 by means of tuned transformer 132 and applied to a detector diode. The D.C. component of the output from the diode is applied as bias to the base of transistor 125, to provide automatic gain control. the transistor 125 varying the base bias of transistor 102, thereby varying its gain, and also forming a variable shunt path across its input. Transistor 117 in conjunction with resistor 123 maintains the collector potential of transistor 102 constant. The Specification also discloses a simplified embodiment (Fig. 1, riot shown) in which the emitter load of the emitter follower (8) may comprise a further transistor, and is by-passed for A.C. signals; also the gainvarying transistor (14) may be of the field-effect type.
Patent GB-1262770-A (GB)
Title: A stabilized reference voltage source
IPC: G05F3/30
Filed: 1969-09-23
Abstract: 1,262,770. Voltage regulators. INTERNATIONAL BUSINESS MACHINES CORP. Sept.23, 1969 [Sept.24, 1968], No.46740/69. Heading G3X. In a temperature-compensated reference voltage source circuit in monolithic form, an input terminal 20 of a differential amplifier 14 is connected through input node 30 to a voltage level setting circuit 56 and to a constant current source 33. The latter comprises transistor switch 34 whose base 35 is connected to node 41 which is adapted to provide a positive signal by means of transistor-diode 42 and the series-connected diodes 44, 45, in conjunction with resistor 43. The node 41 also applies a positive signal to the base 39 of transistor 38 to provide constant current to node 24. The voltage between node 30 and supply terminal 10 is determined by the relation between resistors R1, R2, associated with transistor 58. Temperature compensation is provided by selecting resistor R1 to have a high positive temperature co-efficient of resistivity compared with the resistor R2. The output node 32 has the same potential as the base 20, the emitters of transistors 16, 18, being connected at the node 24, and the base-emitter drops being substantially identical. Under no-load conditions, current I 2  equals the sum of currents I 3 , I 4 , a transistor 66 being conductive to provide current I 5 . The current I 6  through load resistor 64 equals the current I 5  whereby the terminal 32 is maintained at a constant potential. The current I 5  may be shared by additional transistor 73. When a load current I 0 . is drawn from terminal 60, transistor 18 tends to turn off and transistor 16 becomes more conductive. Increased current through transistor 66 raises the potential at node 32 which in turn causes the transistor 18 to turn on again. The circuit 62 thus operates to maintain the voltage at node 32 constant despite increased loading at terminal 60. Resistor 68 places transistor 66 in saturation when excessive load current is demanded, so limiting the output current.
Patent GB-1072101-A (GB)
Title: Electrophotographic printing apparatus
IPC: G03G15/22
Filed: 1963-11-27
Abstract: 1,072,101. Feeding webs. HARRIS-INTERTYPE CORPORATION. Nov. 27, 1963 [Nov. 27, 1962], No. 46870/63. Heading B6B. [Also in Division G2] In an electrophotographic apparatus (see Division G2), a web (23), Fig. 1 (not shown), is unwound from a roll 25, Fig. 3, in an unwind assembly (14), Fig. 1 (not shown). The assembly 14 has pivotally mounted arms (42) which can be raised by fluid actuators (49), Fig. 2 (not shown). A motor 55, Fig. 3, drives a roll 23 through gearing (57), Fig. 4 (not shown), when the arms (42) are in the raised position. Lugs (62) engage holes (63) to effect such driving through a clutch having a clutch plate (70) on a shaft (68) and a drive plate (75) keyed to a shaft (60). The shaft (68) is axially slidable by a handle (87) to disengage the lugs (62) from the holes (63). Core shaft (60) is supported in the arms (42) by bearings (90), (92), and is movable laterally in the raised position by a crank block (102) and crank (105). A paper core (130) is secured to the shaft (60) by an expansible rubber ring (135) and a removable key (127), the ring (135) being expanded by compression through an adjustable member (133). Bearings (90), (92) are held in fixed position by releasable clamping devices (145), Fig. 5 (not shown). A web-tensioning device (160), Fig. 2 (not shown); has a vertically movable floating roller 162, Fig. 3, urged upwardly by air cylinders 166. Should the length of a web loop around roller 162 decrease, a torque tube 170 is rotated clockwise through steel tapes 175 connected to the roller 162. Tube 170 actuates a transducer, e.g. a potentiometer for adjusting the speed of motor 55 to restore tension. A similar tensioning device and roll support is provided for winding-up the printed web. In a modification, Fig. 15 (not shown), for multi-colour reproduction an index mark (337), Fig. 16 (not shown) on a web (335) is sensed by a photomultiplier tube (350) which receives light reflected by the web (335) from a light source (340). A control circuit, Fig. 20 (not shown), controls the flashing of a light source (489) used for exposure of the web in response to the sensed index marks, thereby maintaining correct registration of a succession of images.
Patent GB-1092877-A (GB)
Title: Method and apparatus for making wrought y-fittings from a tubular work piece
IPC: B21C37/29
Filed: 1965-11-05
Abstract: 1,092,877. Making pipe fittings. A. C. ARBOGAST. Nov. 5, 1965, No. 46980/65. Headings B3A and B3Q. In making Y-pieces of circular or non- circular cross-section from tubular blanks 10 in a split die by deforming, between members 38, 46, a filling 54 in the blank, the member 46 moves during the forming operation while member 38 is stationary with its forward end 44 adjacent the branch cavity 24 of the die, into which the blank is deformed. Shoulders 42, 52 on the members 38, 46 bear on the ends of the blank, and a plug 30 closes the cavity 24. A uniform or tapering passage 48 in member 46 receives some of the filling 54 during forming. After completion (Fig. 4) and removal from the die, the work is heated to remove the filling, the end of the branch severed and, if desired, some or all of the limbs expanded at their ends. A filler-passage may also be formed in member 38, and a lubricant may be used.
Patent GB-1128758-A (GB)
Title: Improvements in "method of removing water from a polar solvent"
IPC: B01D17/06
Filed: 1966-10-21
Abstract: 1,128,758. Electrolytically treating polar solvents. GENERAL ELECTRIC CO. Oct.21, 1966 [Oct.22, 1965], No.47268/66. Heading C7B. Contaminating water is removed from a non- aqueous solvent, which is electrically conductive or has been rendered so by dissolving therein an electrolyte, by passing current through the solvent at a potential difference sufficient to decompose the water leaving the solvent undecomposed. Platinum electrodes may be used. For drying acetonitrile, the potential is 3.5 volts where the electrolyte is lithium perchlorate or 2.5 volts where the electrolyte is tetra-butyl-ammonium and sodium perchlorate; for drying dimethyl sulphoxide, the potential is 1À3 volt where the electrolyte is tetra-ethyl-ammonium perchlorate.
Patent GB-1027076-A (GB)
Title: Wheelbarrow-like transport vehicle
IPC: B62B1/24
Filed: 1963-12-03
Abstract: 1,027,076. Hand trucks. A. KASTNER. Dec. 3, 1963, No. 47682/63. Heading B7B. A hand truck has a frame 1 to which legs 15 are secured and which carries plates 18 having recesses to accommodate a shaft 8 secured between lugs 16 forming part of the body 13. A hand-operated catch securing the body 13 to the frame allows the body 13 to be tipped. The shaft 8 is retained in the recesses in the plates 18 by another hand-operated catch thus enabling the body 13 to be replaced by a flat load carrying platform.
Patent GB-1093126-A (GB)
Title: Improvements relating to the stacking of biscuits
Inventor: MORTON DAVID CHARLES
IPC: B65B23/12
Filed: 1963-12-03
Abstract: 1,093,126. Packaging. BAKER PERKINS Ltd. Dec. 2, 1964 [Dec. 3, 1963], No. 47713/63. Headings B8A and B8C. A device for forming biscuits 3 advanced separately on a substantially horizontal conveyer 1 into an overlapped formation on another conveyer 18 comprises a stationary plate 14 over which the biscuits are projected to strike against a stop 7 and fall, guided by a member 15 onto the other conveyer. The first biscuits lay flat but those following, 3e-3g, remain inclined. An air jet 26 may be used to depress the trailing ends of the biscuits. The jet and stop are adjustable, the latter having a resilient backing 5.
Patent GB-1285922-A (GB)
Title: Pressure casting machine
IPC: B22D17/10
Filed: 1969-09-29
Abstract: 1285922 Casting machines BUHLER AG GEB 29 Sept 1968 [30 Sept 1968] 47068/69 Heading B3F [Also in Division F1] An hydraulic drive piston 62, Fig. 2, having a rod 63 for actuating a plunger 11, Fig. 1, which forces molten metal from a sleeve 10 into closed mould halves 8, 9 is supplied by a pump 31 through a valve 32 when in its left hand position and also by an accumulator 16 through an axial valved bore 66 in a stepped intensifier piston 65 which during the forward stroke of piston 62 is held in the retracted position shown by fluid trapped in the left hand end of cylinder 13 and held by a closed overflow valve 80 connected by a duct 42 to a return tank 30 until such time that when the drive piston 62 meets resistance the resulting back pressure rise at the large end of piston 65 and which acts through a restrictor 90 and after depressing a differential floating piston 96 opens a shut-off valve 85 thereby venting a line 82 between valves 82, 85 resulting in venting of the left hand side of piston 65 and displacement of piston 65 so as to intensify the pressure on the drive piston 62 which in turn pressurizes the casting. The lower end of floating piston 96 is subject to accumulator pressure, and restrictor 90 together with an adjutstable stop 98 for piston 96 serves to provide an adjustable time delay between the moment the drive piston meets resistance and the moment of application thereto of intensified forward pressure. In a modification the shut-off valve (115), Fig. 4 (not shown), is solenoid operated and the delay is effected by a time switch (146).
Patent GB-1282638-A (GB)
Title: Ultrasonic displacement drilling of pivot holes in a plastics plate
IPC: G04D3/00
Filed: 1969-10-02
Abstract: 1282638 Ultrasonic drilling of plastics plates; percussive tools HAMILTON WATCH CO 2 Oct 1969 [30 Oct 1968] 48575/69 Headings B4C and B5A A plastics plate 18, e.g. a circular plate of nylon filled with 5% molybdenum disulphide for use as a mounting plate in watches, clocks, timers, and fuses, is drilled by a plurality of projections 12 from a fixture 10 which melt the areas of the plate 18 which is urged thereagainst by a member 22, which is loaded by a spring 26 and vibrated in a direction normal to the plate 18 at high frequency e.g. 20,000 cycles per second, by an electro-mechanical transducer 20. The penetrated plastics plate is urged into a recess 14 in the fixture 10, from which it is ejected by ejector pins and with respect to which it is initially located at preformed plate holes by a pair of spaced pins 16. The projections 12 may form holes through the plate 18 with melted plastics collecting in a groove 32 around the base of a projection 12, and being displaced also to the upper surface of the plate 18 where it may remain as a boss or subsequently be removed. The projections 12 may penetrate through smaller diameter pilot holes preformed in the plate 18. The projections may also form blind bores into the plate 18, which is preferably provided with preformed recesses on the underside thereof and around the area of a bore to accommodate the melted plastics, in addition to or alternatively to the recesses 32. Insert parts e.g. a lug or pin, which are located on the fixture 10 may simultaneously be embedded in the plate 18, or a metal or jewel insert or a bearing sleeve may be embedded at undercuts or threads thereon within the plate 18, by mounting on a projection 12.
Patent GB-979339-A (GB)
Title: Improvements in or relating to traveller systems
Inventor: PERRY BARRIE EDWARD
IPC: B63H9/10
Filed: 1962-12-27
Abstract: 979,339. Travellers. IAS PROCTOR METAL MASTS Ltd. Dec. 23, 1963 [Dec. 27, 1962], No. 48661/62. Heading B7V. A traveller 5 having a channel or bore 6 extending longitudinally thereof adapted in use to engage a rail 1 is provided with two grooves 8 co-operating with grooves 2 on the rail when the traveller is mounted thereon to define tracks or races for ball bearings 10, the traveller further comprising passages 11, 12 for the return of the balls from one end of each track to the other, and a projection 9 at the end of each groove to deflect the balls either from the track to the return passage or vice versa, depending on the direction of motion of the traveller, whereby in operation continuous recirculation of the ball bearings takes place as the traveller moves along the rail. The traveller has an eye-bolt 16 for attaching a sheet thereto, and apertured lugs 17 to which ropes can be attached for controlling the athwartships movement of the traveller along the rail.
Patent GB-1341978-A (GB)
Title: Unloader assembly
IPC: B21D43/10
Filed: 1971-10-20
Abstract: 1341978 Delivery sheets WARNER & SWASEY CO 20 Oct 1971 [14 April 1971] 48727/71 Heading B8R A device 10 for delivering sheets, e.g. of metal, from an unloading location in a machine 12 for performing work operations on the sheets in turn, to a stack 48 includes a clamp assembly 52 for gripping the leading end of a sheet 24 and moving the sheet from the unloading location to the stack, the clamp being opened to release the sheet in response to the detection that a trailing end portion of the sheet has been pulled from said machine. The machine may be a punch press including a slide (30), Fig. 1 (not shown), having pneumatic clamps (22) for clamping a sheet and moving it to work positions beneath a tool turret (34) and thence to the unloading location under the control of a punched tape (18) and reader (16). The clamping assembly includes pneumatic clamps on a horizontally reciprocable trolley 56 driven by an hydraulic motor 70. A control circuit for the device 10, which includes a sheet trailing edge detector 60 having a feeler arm 148, and a limit cam 102 and limit switch 104 for the trolley is associated with the punched tape reader so that when a work operation has been concluded and the sheet moved to the unloading location, the trolley is advanced to the machine, its clamps are closed, the sheet is moved to the stack and the clamps opened. An ejector 62 pushes the sheet from the clamps to the stack. A stack height detector202 on the trolley lowers the stack table 198 incrementally, as the stack 48 increases, until a limit switch 210 senses a completed stack and triggers a warning light for stack removal.
Patent GB-1062047-A (GB)
Title: Improvements in and relating to annular magnetic cores
IPC: C04B35/26
Filed: 1963-12-10
Abstract: 1,062,047. Magnetic compositions. PHILIPS ELECTRONICS & ASSOCIATED INDUSTRIES Ltd. Dec. 10, 1963 [Dec. 13, 1962], No. 48741/63. Heading H1H. An annular magnetic core having an outer diameter of not more than 0.6 mm., an inner diameter at least half the outer diameter, a switching time of not more than 0.25 Ásec., and   a value of the quotient uV1/dV2 greater than 3 with   a disturbance ratio of 0À61 is obtained by sintering the presintered product of a mixture of oxides or equivalent compounds of lithium, nickel and iron in the proportions: 14 to 15 mol. per cent Li 2 O 5 to 7 mol. per cent NiO and 78 to 81 mol. per cent Fe 2 O 3  The core is made by mixing the presintered product with polyvinyl alcohol in water to form a paste, thickening, sieving ont large particles, drying, compressing in the desired shape to a density of 2À3 to 3.0 gm/cm.<SP>3</SP> and sintering according to a specified schedule. Pulse characteristics of the core are given.
Patent GB-1024434-A (GB)
Title: Modified urea-formaldehyde resins
IPC: C08G12/36
Filed: 1962-12-28
Abstract: Modified urea-formaldehyde resins are made by reacting a major amount of urea and a minor amount of acetoguanamine, benzoguanamine or phenylacetoguanamine, with formaldehyde under weakly alkaline conditions in the presence of ammonia and hexamine.  The formaldehyde may be used in the form of formalin, paraformaldehyde or polyoxymethylene. The reaction is preferably effected with a molar ratio of 0.01 to 1.5 moles of guanamine per 3 moles of urea, at a pH of 7.5 to 8.0 and at 75 DEG  to 80 DEG  C.  The resulting condensates can be hardened by known hardening agents, e.g. NH4Cl and Na3PO4. Examples are given in which the modifier is (1,5,6,7,8) benzoguanamine, (2,3) acetoguanamine, and (4) phenylacetoguanamine. Uses.-For moulding, coating, making laminates, as adhesives, or for finishing textiles and paper.
Patent GB-1147278-A (GB)
Title: Valve for controlling temperature in an automotive vehicle heater core
Inventor: CALDWELL ROLAND BLAIR
IPC: B60H1/00
Filed: 1967-10-27
Abstract: 1,147,278. Fluid-pressure servomotor systems. RANCO Inc. Oct. 27, 1967, No. 49044/67. Heading G3P. A valve for controlling the flow of liquid through the heater cone 10, Fig.1, of the heating system for an I.C. engine driven automobile comprises a frame 15 supporting a valve mechanism 31, Fig. 2, and a thermally responsive element 32 adjacent the mechanism, the mechanism having an actuating stem 47 projecting therefrom and fluid responsive means 42, 43 to nullify fluidpressure forces tending to open or close the valve 40, Fig. 3, a first lever 60 inter-connecting the moving member of the element 32 and the stem 47, a second lever 64 pivoted to the frame and to the first lever, a vacuum motor 33 having an operating member 73 connected to the second lever, and a manually adjustable vacuum regulator 23 adapted to be interposed between the motor and the intake manifold of the engine 11. The regulator 23 provides an output pressure which is dependent only upon the position of the lever 22 so that each position of the lever corresponds to a particular position of the motor 33 and hence a definite temperature setting of the valve 31. The element 32 is connected by a capillary tube 61 to a bulb 62 in the path of the air discharged from the core 10 and is connected by an adjusting screw 57 to the lever 60 which is loaded by a spring 68 and coupled by a C-shaped blade spring 67 to the stem 47. A passage 51 through the stem connects the space between the fluid responsive means 42, 43 to the space 35 downstream of the valve seat 37.