baber/WOPTO huggingface dataset:
Patent GB-756954-A (GB)
Title: Improvements in optical scanning arrangements for facsimile and picture telegraph transmitters
Inventor: BELL JOHN
IPC: G02B27/10
Filed: 1953-09-18
Abstract: 756,954. Copying telegraphy. MUIRHEAD & CO., Ltd. Sept. 17, 1954 [Sept. 18, 1953], No. 25842/53. Class 40 (3). An optical scanning arrangement for a copying telegraph transmitter is arranged with the optical axes of the illumination and light-collecting systems coincident and inclined to the surface to be scanned at an angle sufficient to ensure that no light reflected directly from the surface (as occurs, for example, with a glossy finished photograph) can enter the collecting system. The magnitude of the signal produced by the system is then a true measure of the optical tone or density of the surface scanned. In one arrangement, Fig. 1, the lamp 1 reflects light to the surface 5 being scanned by. way of an inclined mirror 3 and objective 4, the same objective serving to form an image of the surface on a light-sensitive device 7 by way of a central circular or elliptical aperture in mirror 3. Surface 5 is set at angle to the normal AA which exceeds half the inclined angle of the collecting cone of the objective. In a modified arrangement, Fig. 2 (not shown), the apertured mirror is replaced by a plane glass or half-silvered mirror. In a further modification, Fig. 3 (not shown), a pair of contacting prisms are utilized with the contacting face of one ground or sand-blasted away to leave only a central circular or elliptical part in optical contact with the face of the other. To reduce the light entering the collecting system due to reflection from upper surface of objective, this surface is preferably " bloomed ". In another arrangement, Fig. 4 (not shown), the illuminating beam of light is arranged not to pass through the objective 4 by disposing the reflecting half silvered mirror or glass plate between the objective and surface 5.
Patent GB-291660-A (GB)
Title: Improvements relating to the manufacture of asbestos-cement and like slabs or tubes
IPC: B28B1/42
Filed: 1927-09-30
Abstract: 291,660. Chedler, R. B. Sept. 30, 1927. Moulding pulp.-Asbestos-cement, slabs &c. are formed by continuously and simultaneously winding a number of layers of material at different points upon a drum to a predetermined thickness and subsequently cutting and removing the wound material. As shown, a pair of felt bands 6 receive a layer of material from moulds 5 rotating in tanks 1-4 and co-operating with coating rollers 7, and the bands transfer the layers to a drum 11 under the influence of spring influenced discharging rollers 12. The drum 11 is mounted in ball bearings to rotate freely. A guide 23 fitted with rollers 24 prevents the material falling away from the drum. The bands 6 pass through washing tanks 18 and between drying-rollers 20 before returning to the moulds 5.
Patent GB-604434-A (GB)
Title: Improvements in electrical pulsing devices
IPC: H03K5/145
Filed: 1944-12-27
Abstract: 604,434. Pulse delaying circuits. WESTERN ELECTRIC CO., Inc. Dec. 27, 1944, No. 25951. Convention date, Dec. 28, 1943. [Class 40 (vi)] An input pulse initiates current through a resistor and capacitor in series to cause the magnitude of the voltage regardless of sign across two points of the circuit first to decrease and then increase, an output pulse being produced when the voltage is at a minimum value. A negative pulse, Fig. 2, applied across resistor 20 to a flip-flop pair of valves 21, 22 causes valve 21 to conduct and generate a negative rectangular wave of duration determined by the multivibrator circuit constants. Valve 35, normally conducting, is cut off by the negativegoing wave to produce a corresponding positive wave at the anode. Due to the choice of timeconstant of capacitor 51 and resistor 52, the grid of valve 36 is driven positive at the commencement of the wave to overcome the cut-off bias and allow anode current to flow, but the grid potential falls steadily as capacitor 51 charges, the anode current of valve 36 falling accordingly. When valve 36 conducts, the anode potential falls, causing normally-conducting valve 60 to cut-off. Capacitor 53 discharges over resistor 54 and then charges as the anode current of valve 36 falls and the anode potential rises, the charging current passing as grid current through valve 60. As the charge on capacitor 53 approaches a minimum, valve 60 again conducts, thereby generating a positive wave in the anode commencing with the initial pulse and terminating at a time determined by the setting of ganged capacitors 51, 53. This wave is squared and inverted in normally cut-off valve 61, the resulting negative wave being differentiated by condenser 78 and resistance 79, the short delayed positive pulse being applied to squaring valve 62 to produce a negative pulse on the anode. In a modification, Fig. 3, a capacitor C is connected across the anodes of the flip-flop pair of valves 100, 101, valve 101 normally being non-conducting. The input pulse reverses the state of the pair, causing capacitor C to discharge and recharge in the opposite sense. Normally conducting valve 131 is cut off until the charge on capacitor C passes through a minimum valve, thus generating a rectangular positive wave at the anode which may be differentiated to give the delayed pulse. In a further modification, the capacitor C is not connected to valve 100. In another modification, Fig. 5, the output pulse, coincident with the' input pulse, is suppressed. Valve 301 is cut off for an interval and upon conducting again the capacitor 311 and inductor 312 resonate, the resulting wave being damped out by grid current in valve 302 after the first quarter negative half-cycle. The positive pulse is fed to valve 303 to give a negative output pulse.
Patent GB-1282144-A (GB)
Title: Improvements in or relating to roofing
Inventor: GAUNTLETT ARTHUR EDWARD
IPC: E04D3/40
Filed: 1969-05-21
Abstract: 1282144 Roof covering units A E GAUNTLETT 25 March 1970 [21 May 1969] 25959/69 Heading E1B A roofing panel comprises an upper skin 1 shaped to simulate a plurality of tiles, upper and lower walls 4, 5 with inturned flances 4A, 5A and a filling in which projecting ties 7 are embedded, the ties 7 being secured to pins 12 projecting from rafters 10 by further ties 11. Projecting tongues 6 having ribs 6A to prevent moisture penetration are formed integral with the outer skin which is made of asbestos, synthetic plastics with or without glass fibre reinforcement. The filling may be concrete, foamed concrete or polyurethane, mineral wool or glass fibre. In a modification the element has a lower moulded face extending between the flanges 4A and 5A and in this case the insulating medium can be air. Modified form of ties for securing the elements to roofs and various ridge capping elements and modified roofing elements are disclosed. The side edges of the elements have complementary rabets defining gutters extending down the slope of the roof. Counterbattens may be embedded in the filling and the elements secured to the roof by nails passing through roof battens into the counterbattens. Inverted V section upstanding guttering walls may be fixed on top of roof structure incorporating the elements to direct rain water towards a down pipe in torrential condition.
Patent GB-1303580-A (GB)
IPC: F16H61/02
Filed: 1971-04-19
Abstract: 1303580 Change-speed control; engine/transmission units REGIE NATIONALE DES USINES RENAULT and AUTOMOBILES PEUGEOT 19 April 1971 [3 April 1970] 25980/71 Heading B7H [Also in Division F2] In a transverse unitary automatic enginetorque converter-gearbox-differential assembly for a motor-vehicle, in which the gearbox is of the epicyclic C.S.G. type having hydraulically operated brakes for selectively locking the reaction members of the epicyclic gear train, the brakes are formed by pairs of axially movable clamping members 7 urged apart by the opposing thrust of springs 9 (Fig. 3, not shown) and having unequally spaced radial lobes 8 slidably received in cavities 11 cast integrally in the gear casing, whereby the radial overall dimension of the gear casing is kept to a minimum. A ball-mounted remotely arranged manually operated lever 15 is connected by linkage 21 incorporating a vibration damper (not shown) to a control shaft 24 which is arranged transversely to the axis of rotation of the gear train, and extends downwardly to operate a bell-crank lever 27 (Fig. 6), the ends of which are connected by links 29 and 31 to a park lock 32 and the usual automatic PRNDLH slide valve 30, respectively, the latter of which controls an electro-hydraulic control unit 33 housed in the oil sump 34 of the transmission.
Patent GB-1169281-A (GB)
Title: Improvements in or relating to hollow shaft connections
Inventor: TROMPA KARLHEINZ
IPC: C30B13/28
Filed: 1967-06-06
Abstract: 1,169,281. Zone-melting. DEUTSCHE AKADEMIE DER WISSENSCHAFTEN ZU BERLIN. 6 June, 1967, No. 26080/67. Heading B1S. [Also in Division F2] - A holder 4 for one end of a rod 5 is detachably coupled to a hollow driving shaft 1 by means of bolts 13 which pass through flanges 7 and of the mounting and shaft respectively, flange 7 having a bayonet joint connection with mounting 4 and flange 2 being connected to shaft 1 by two diametrically opposed pins (3, Fig. 2) which allow pivoting of the flange about an axis transverse of the shaft axis. The abutting ends of mounting 4 and shaft 1 have corresponding annular recesses and knife edges respectively with an interposed copper sealing gasket (Fig. 3). A cooling medium is passed through a pipe 16, radial bores 17, and the annular space between pipe 16 and shaft 1. The arrangement enables rod 5, which is to be zone-melted in a vacuum chamber, to be centred and clamped outside the chamber.
Patent GB-1184109-A (GB)
Title: Pressure Sensitive Device Incorporating Semi-Conductor Transducer
IPC: G01L9/00
Filed: 1967-06-06
Abstract: 1,184,109. Measuring pressure electrically. TOYODA MACHINE WORKS Ltd. June 6, 1967 [June 7, 1966], No.26141/67. Heading G1N. A pressure transducer comprises a strip of semi-conductor material mounted with its axis on a radius of a circular diaphragm subjected to the test pressure, so that part of the element is in tension and part in compression. The two parts are connected in adjacent arms of a resistance bridge, the common lead being connected at the position of zero stress, the output from the bridge being proportional to the test pressure, with automatic compensation for variations in temperature.
Patent GB-720073-A (GB)
Title: Improvements in or relating to the cleaning of sacks by suction
IPC: D06G5/00
Filed: 1952-10-17
Abstract: 720,073. Vacuum cleaning apparatus. BEHRMANN, O. A. L., [trading as NACHF, A. K.]. Oct. 17, 1952. [Oct. 17, 1951] No. 26170/52. Class 8 (1). An air pervious open necked flexible container e.g., a sack 5 Fig. 1 is cleaned by suction which is repeatedly connected and disconnected e.g., by a flap valve 13 in a suction duct 7 connected to the sack neck so as to cause the sack to repeatedly assume the inside out and the normal position. The sack neck is secured to a reversing socket 3 large enough to accommodate the sack in the reversed position and return is effected by gravity which may be assisted by closing a valve 15a in the discharge duct of the suction source 9 so as to provide a return of air through a duct 12, a small open aperture in the closed valve 13 and a filter chamber 8 leading to the inlet of the suction source 9. A plurality of sacks 5 may be connected in parallel to a common suction duct 7 and the valve 13 is actuated at a desired frequency and duration by a solenoid 14. Dirt from the filter chamber 8 is collected in a container 11. In a modified reversing socket 16 Fig. 2 which includes a coarse filter screen 21 the suction current traverses a controllable aperture 25 in a pivoted plate 24 which on opening the valve 13 is drawn to and held against the open end of the socket and on closing the valve 13 opens under gravity to allow return of the sack. Air inlet apertures 26 and further apertures 27, 27a controlled by an annular rotary slide valve 29 provide auxiliary suction currents impinging axially and radially against the outside of the sack as viewed in the inside out position.
Patent GB-661116-A (GB)
Title: Improvements relating to d.c. amplifiers
IPC: H03F3/36
Filed: 1948-10-07
Abstract: 661,116. Valve amplifying circuits; pulse modulation. BRITISH THOMSON-HOUSTON CO., Ltd., and EVANS, J. H. Sept. 6, 1949 [Oct. 7, 1948], No. 26177/48. Classes 40 (v) and 40 (vi). In a thermionic valve amplifier for D.C. or low-frequency potentials, a voltage of rectangular waveform is fed to a grid, a rectangular wave derived from this input is fed to the anode so as to neutralize the output voltage variations and the potentials to be amplified are applied to the grid so that a residual rectangular wave of phase dependent on the polarity of the applied voltage and amplitude dependent on its magnitude is obtained at the anode. A rectangular voltage wave applied to an amplifier circuit between input terminal B and earth is maintained at constant amplitude and polarity by opposed diodes V2, V3. Part of the voltage appearing across potentiometer R7, R6 is fed to the anode of amplifying valve VI, and part of the positive-going voltage across potentiometer R5, R4 is applied to cut off normally conducting diode V4, so that a positive-going rectangular wave of the same phase as that fed to the anode is fed to the grid of valve V1. Potentiometers R4, R5 and R6, R7 are so adjusted that, in the absence of any input to terminal A, amplified rectangular wave appearing at the anode of V1 is just cancelled by the applied voltage. When an input is applied at A a residual rectangular wave appears at the anode of amplitude and phase dependent on the magnitude and polarity of the input. Resistor R10 shunted by a diode V5 compensates for changes in the characteristics of diode V4. Diodes V2, V3, V4, V5 may be replaced by crystal rectifiers, in which case resistor R10 and diode V5 may be omitted.
Patent GB-187819-A (GB)
Title: Improvements in temple thread parters for looms for weaving
IPC: D03J1/22
Filed: 1921-10-04
Abstract: 187,819. British Northrop Loom Co., Ltd., (Northrop Loom Co.). Oct. 4, 1921. Weft, cutting.-The temple is provided with a thread-parter comprising a stationary blade and a forked movable blade 10, Fig. 1, pivoted on a stud 11 and provided with an actuator 12, Figs. 1 and 4, having extensions 13 forming a counterweight, whereby the cutting-blade is moved to its open position. The extensions 13 are engaged by the lay to operate the parter before this engages the usual heel of the temple, but normally the thread-parter is locked in its inoperative position by a spring-controlled slidable detent 19, which is forced into and held in an inward position (to the left in Fig. 4), so as to be in the path of the actuator. The detent then retains the actuator in the position shown in dotted lines in Fig. 1, so that it cannot be operated by the lay. When weft-replenishment is indicated, a bar is raised so as to engage a lateral rod &c. 47 on a locking-dog 43 engaging a rack 20 on the detent. The dog 43 is thereby raised and also raises a driving-pawl 38, whereby the detent is released and is moved to the right out of its locking position under the action of a spring 23. The actuator 12 is thereby freed and falls into position to be engaged by the lay, so that the thread-parter is operated and continues to be operated at each beat-up for some time. The actuator operates a plunger 25, thereby rocking a lever 26, 29 connected by lever-mechanism to the pawl 38, which engages the rack 20 and moves the detent, step by step, to the left till finally it moves in its locking position and holds the actuator in inoperative position until weft-replenichment is again indicated.
Patent GB-262596-A (GB)
IPC: B60Q1/124
Abstract: 262,596. Adamson, R. B., and Richards, W. H. Dec. 9, 1925. Vehicle lamps, directing.-In means for dipping a pair of headlamps of the kind in which the lamps are mounted on auxiliary members adapted to engage the usual supports provided on the vehicle, the movable parts of the auxiliary members are connected by an axially-rotatable member e carrying an arm f connected at the lower end to a rigid control member g accessible by the driver, means being provided for holding the lamps in selected positions. The member e may consist of two tubular parts connected adjustably by a rod e<1>, a sleeve e<3>, a cotter-pin e<2>, and a split clamping collar e<4>, and the member g may comprise telescopic parts g', g<2>, secured by a clamp g<3>. The arm f is provided with holes f<2> to provide an adjustable connection with the member g, which may pass through the dashboard and through a guide k, secured adjustably by means of a lateral threaded pin k<1> and wing-nut k<3> to a fixed bracket k<2>. To hold the lamps in selected positions, a spring-plunger i on the arm f is adapted to engage indentations in a fixed quadrant h comprising a plate h<1> having arcuate slots h<2> through which studs h<3> are passed and screwed into a flange d<3> on the fixed part of the adjacent auxiliary lamp member so that the quadrant may be adjusted in a vertical plane. A spring-plunger or other retaining device may be provided on the guide k in addition to, or instead of, the quadrant h. The auxiliary members c for mounting on fork brackets a, Fig. 1, consist of L-shaped brackets having a part c<1> for receiving a lamp socket and a part c<2> rotatable in a casing d having an off-set portion adapted to fit on a limb of the fork. The part c<2> adjacent the quadrant h may be screwed into the split end of the tube e and clamped in position by the part f<1> of the arm f. Where lamp brackets A, Fig. 4, are provided, the auxiliary members C comprise a movable part having a socket C<1> for receiving the lamp stem A<2> and a limb C<2> rotatable in a cvlindrical portion D<1> of a plate D bolted in the socket A<1> of the bracket A, the limbs C<2> being connected by the member e.
Patent GB-841853-A (GB)
Title: Horizontally operating loading gate for centrifugal machines
Inventor: GRIESELHUBER WILLIAM
IPC: B04B11/04
Filed: 1956-08-28
Abstract: 841,853. Emptying tanks. WESTERN STATES MACHINE CO. Aug. 28, 1956, No. 26309/56. Class 21. [Also in Group XXIX] A sliding gate 22, Fig. 1, for closing a downwardly opening outlet 18 for liquids is coupled to a drip-catching pan 59 movable with the gate 22, the arrangement being such that when the gate 22 is in its closed position as shown in full lines in Fig. 2 (Fig. 2 being a side elevation of the gate taken in the direction of the arrows 2-2 in Fig. 1), the pan 59 is in a position A extending beyond the forward edge 62 of the gate 22 and such that when the gate 22 is about to be moved to the right to open the outlet 18 the pan 59 is first moved to a position B away from said forward edge 62. The gate 22 is carried by a cross-head 29 slidable along a track 30. Beneath the gate 22 the cross-head 29 carries two abutments 50 and 51 and between these abutments two pawls 52 are rotatably mounted on pins 53. The motion of the gate 22 and pan 59 is initiated by a shaft 39 to which is secured a member 34 disposed between the abutments 50 and 51. Assuming that the gate 22 is in its fully opened position as shown by the broken lines to the right hand side in Fig. 2, a closing motion of the shaft 39 causes the member 34 to push against the pawls 52 and thereby slide the gate 22 and the pan 59 to the left, the pawls 52 being unable to rotate since they are held stationary by the under surface of the track 30. When the gate 22 has been moved to a position closing the outlet 18, the pawls 52 rotate upwardly into recesses 54 in the track 30 and this permits the member 34 to move past the pawls 52 so that the pan 59 continues its motion relatively to a now stationary gate 22. The pan 59 thus moves from position B to position A after the gate 22 has closed the opening 18 and, during this time, the motion of the body portion 34 is also used to act on a wedging arrangement forcing the gate 22 tightly against the outlet 18. As shown in Fig. 1, the whole assembly is so arranged that the pan 59 is at an angle with respect to the horizontal, and drippings that fall from the gate closure onto the pan 59 escape via a pouring lip 64 in the lower edge of the pan. The tank 11 may contain a mixture of sugar crystals and syrup to be separated by treating charges of the mixture in centrigugal machines of the filtering type.
Patent GB-144546-A (GB)
Title: Improvements in and relating to moulds for casting articles of concrete and like plastic material
IPC: B28B7/36
Filed: 1919-10-27
Abstract: 144,546. Harrison, J. H. Oct. 27, 1919. Moulds for casting articles of concrete and like plastic material, of the kind provided with detachable liners which remain around the moulded article when the mould is withdrawn, are provided with rollers d or like anti-friction devices carried either bv the liners or the mould to facilitate the removal of the mould. The invention is applicable to moulds which comprise a box adapted to be inverted to discharge the moulded article, or to those which comprise a frame adapted to be lifted from the moulded article.
Patent GB-1451429-A (GB)
Title: Controlling pig iron refining
IPC: C21C5/30
Filed: 1975-06-20
Abstract: 1451429 Refining iron CENTRE DE RECHERCHES METALLURGIQUES-CENTRUM VOOR RESEARCH IN DE METALLURGIE 20 June 1975 [20 June 1974] 26393/75 Heading C7D In a pig-iron refining process, molten pig-iron in a converter is bottom blown through tuyeres with industrially pure oxygen and the input and output parameters are monitored. To control the quality of the steel, the temperature of the fumes leaving the converter during the oxygen blowing are measured to detect a minimum, which corresponds to the instant the slag is molten, and from that point, only a predetermined amount of oxygen is blown into the melt to produce the desired quality of steel, which may be defined by the temperature or composition of the steel. The quality of oxygen blown in after the slag is molten is determined from a previously calculated relationship between the iron content of the slag and the amount of oxygen blown after melting.
Patent GB-1116977-A (GB)
Title: Cathode for gas discharge lamps and a process for the production thereof
IPC: H01J61/067
Filed: 1965-06-22
Abstract: 1,116,977. Thermionic cathode, constructions, EGYESULT IZZOLAMPA ES VILLAMOSSAGI RESZVENYTARSASAG. 22 June, 1965 [15 July, 1964], No.26410/65. Heading H1D. A thermionic cathode for a lamp isformed by winding a tungsten wire successively at least three times to form at least a coiled-coiled-coil, the core of the last but two coil including, at least three spaced, axially extending tungsten wires, and the. core of the last but one coil including a. channel, free from solid material; extending along its axis. In manufacturing the cathode, the core of the last but two, coil is formed by an array of alternately tungsten and molybdenum wires lying parallel in a. plane, the molybdenum wires being subsequently dissolved away. Alkaline earth material applied to the cathode is activated by heat treatment.