baber/WOPTO huggingface dataset:
Patent GB-840519-A (GB)
Title: Improvements in or relating to hydraulic actuating mechanism
Inventor: DICKINSON RONALD SIDNEY
IPC: F15B7/00
Filed: 1957-10-29
Abstract: 840,519. Hydraulic apparatus. ARMSTRONG PATENTS CO. Ltd. Oct. 22, 1958 [Oct. 29, 1957], No. 33638/57. Addition to 826,229. Class 69 (2). Each of the two hydraulic circuits of the manually controlled hydraulic actuating mechanism of the parent Specification comprising a pump cylinder, a motor cylinder and a conduit therebetween, is isolated from the other and provided with its own separate filling means for the admission of hydraulic fluid. The pump casing is provided with two separate filling valves which may be of the spring-loaded non-return type and communicate one with each cylinder. The motor is also provided with a pair of pressure-relief valves 12, 13 which are adapted to be opened to atmosphere by removal of plugs 10, 11 and are connected by bores 6, 7 to passages 2, 3 between the conduits and the cylinders of the motor. During the filling operation, air passes out of the circuits through the valves 12, 13.
Patent GB-1320018-A (GB)
Title: Tower buildings
IPC: E04B1/34
Filed: 1970-07-10
Abstract: 1320018 Tower-like buildings L FELCIAL 10 July 1970 [29 April 1970] 33746/70 Heading E1A A building comprises a central tower having a series of floors cantilevered therefrom to receive dwelling units, the tower serving to house essential services, a staircase wall, a lift-shaft and storage rooms. For minor modifications involving design layouts the Specification should be referred to.
Patent GB-498350-A (GB)
Title: Improvements in or relating to valve mechanism for fluid pressure motors
IPC: F02M59/14
Filed: 1937-12-07
Abstract: 498,350. Valves; pumps. TRIGGS, W. W. (Trico Products Corporation) Dec. 7, 1937, No. 33810. [Class 135] [Also in Groups XXVI and XXVIII] A snap-action valve mechanism for a fluid motor for pumping fuel from a tank to a carburetter comprises a bowed spring 56 which co-operates with a suction port 61 in communication through a conduit 18 with the induction pipe of the engine and an atmospheric port 58. In the position shown in Fig. 2, the atmospheric port 58 is closed and the suction acts upon a bellows 44a, which serves for pumping the fuel from an inlet 32 to an outlet 41, to contract it against the pressure of a spring 47. A rod 48 connected to the bellows acts on contraction of the bellows against the spring valve member in a manner as shown in Fig. 3, until it snaps over to close the suction port 61 and open the atmospheric port 58. The spring 47 then returns the bellows to its extended position and in so doing snaps the valve 56 back again for the cycle of operations to be repeated. In a modification a diaphragm is utilized in place of the bellows 44a.
Patent GB-1073556-A (GB)
Title: Improvements in or relating to automatic frequency control arrangements
IPC: H03L7/12
Filed: 1965-08-09
Abstract: 1,073,556. Automatic frequency control systems. ALBISWERK ZURICH A.G. Aug. 9, 1965 [Sept. 24, 1964], No. 33963/65. Heading H3A. In an A.F.C. system wherein the frequency of an oscillator (1) is compared with that of a reference source (3) in a phase comparator (4) the output of which is fed through a resistance (R1) to a reactance (2) controlling the frequency of the oscillator (1), the output of the comparator (4) is also fed through a voltage doubling rectifier circuit (C1, C2, G1 and G2) to a capacitor (C2) connected to the reactance (2) and also connected to the emitter of a unijunction transistor (T) the base contacts of which are connected respectively to earth and through a resistance (R2) to a positive voltage supply. This causes an initial frequency sweep of the oscillator (1) which facilitates locking-in. If the frequency of the oscillator (1) is too high the charge on the capacitor (C2) increases until the unijunction transistor (T) conducts and discharges it, thereby reducing the frequency of the oscillator (1); thus the change on the capacitor (C.2.) asymptotically approaches the value required for producing the correct output frequency of the oscillator (1). Thereafter slow variations in output from the comparator (4) are passed directly to the reactance (2), part of the voltage doubler circuit (the combination of R1, C1 and G1) forming in effect a high-pass filter.
Patent GB-865893-A (GB)
Title: Improvements in or relating to supporting stands
IPC: F16M11/32
Filed: 1959-10-07
Abstract: 865,893. Stands. WEIMER, K. H. Oct. 7, 1959, No. 33982/59. Class 52(3). A music or like stand has a tubular post a to the lower end of which is fixed an end b carrying spigots c upon which can fit tubular feet d and to which are pivotally connected guide plates e secured to tension springs f in the feet d which feet when pulled outwardly can fold upwardly under the influence of the springs.
Patent GB-1025868-A (GB)
Title: Improvements in methods of and apparatus for plasticising rubber or synthetic plastics material by heat and motion and pressure
IPC: B29C45/50
Filed: 1964-08-20
Abstract: 1,025,868. Injection moulding machines. DESMA-WERKE G.m.b.H. Aug. 20, 1964 [Aug. 31, 1963], No. 34013/64. Heading B5A. Material is plasticized prior to injection, in two stages, the first being under low pressure with movement of the material forwardly in an injection cylinder 12 by means of a screw 11, and the second stage being under higher pressure with little or no forward movement of the material. The changeover from low to high pressure is effected when the screw 11 has moved rearwardly to the position shown so that a switch 15 and a valve 26 are closed. Closing of valve 26 applies the full pressure from a pump 23 to a piston 14b connected to the screw 11. Closing of switch 15 also operates a time switch 18 which, after a pre-set time, switches off a motor 20 driving the screw 11 through gearing 21.
Patent GB-1269445-A (GB)
Title: High polymeric articles
Inventor: BONVINCI ALBERTO
IPC: C08L23/02
Filed: 1970-07-14
Abstract: 1,269,445. Dyeing synthetic polymers. MONTECATINI EDISON S.p.A. 14 July, 1970 [16 July, 1969], No. 34019/70. Heading D1B. [Also in Division C3] Shaped articles such as fibres, tapes and films made of compositions comprising 99 to 75 weight per cent of a high polymer and 1 to 25 weight per cent of a basic polyamide obtained by reacting a polyamine with an acrylic or methacrylic ester, are dyed with acid, premetallised and disperse dyes. Dyeing with acid and premetallised dyes may be effected in baths containing alkyl phenol/ethylene oxide condensates or sodium salt of N- oleyl-N-methyl taurine as surfactant, with the addition of acetic acid to improve bath exhaustion; and dyeing with disperse dyes in the presence of surfactant and ammonium acetate. The high polymer may be a polyolefin, polystyrene, acrylic or vinyl polymer, polyester or polyamide. The polyamide component may be insolubilised by treatment with an epoxide, isocyanate, aldehyde or divinyl benzene; and dyeability may be enhanced by treatment with an acid. Examples describe the dyeing of fibres formed from compositions comprising polypropylene and polyamides formed from methyl acrylate and (1 and 2) aminoethylpiperazine, (3) ethylene diamine, (5) ethylene diamine and hexamethylene diamine, (6) tetraethylene pentamine, (7) diethylene triamine, (8) hexamethylene diamine, (9) hexamethylene diamine and diethylene triamine, (10) hexamethylene diamine and aminoethyl piperazine, (11) ethylene diamine and aminoethyl piperazine, (12) diethylene triamine and aminoethyl piperazine, (13) ethylene diamine and diethylene triamine, (14) piperazine and (15) dibutyl hexamethylene diamine and aminoethyl piperazine; from ethyl acrylate and (4) aminoethyl piperazine; and from methyl methacrylate and (16) diethylene triamine.
Patent GB-1423540-A (GB)
Title: Electrical connector
IPC: H01J5/50
Filed: 1973-07-17
Abstract: 1423540 Spark gaps TAIYO YUDEN KK 17 July 1973 [18 July 1972] 34082/73 Heading H1X [Also in Division H2] An electrical connector e.g. a CRT socket comprises a two-part insulative body 1, 4 Figs. 4, 5, housing connection terminals 2, an earth terminal 6, 7 and conductors 5 each spaced from a portion 7 of the earth terminal to define a discharge gap 13 between a connection terminal 2 and the earth terminal 6, 7 for over-voltage protection of the connection terminal 2. Each connection terminal 2 comprises a terminal element (e.g. for engaging a CRT pin) housed in a first insulative plate 1 and a leg portion projecting parallel to the connection axis from the periphery of the plate 1. A metal frame C, Fig. 9, embedded in a second insulative plate 4 attached to the first plate 1 has conductors 5 each in contact with a contiguous leg portion 2. Discharge gaps 13 are formed by cutting an annular groove 12 of accuratelycontrolled width in the exposed face of the second plate 4, so cutting through the conductors 5 but leaving intact the upset conductor 6, Fig. 5, 6 serve as an earth terminal for the ring 7. In another embodiment Fig. 10 (Fig. 12 not shown), the second plate 4, embedding a metal frame (C) having an earth conductor (6) without an upset portion, is provided with apertures 12a each corresponding to a required discharge gap 13, which gap is formed by cutting or punching a piece out of a conductor 5 through the aperture 12a. Terminals 2 may be arranged in an irregular pattern; and an index lug 11 may project into central holes 3, 9 in the plates 1, 4.
Patent GB-1187666-A (GB)
Title: Method and Means for Coupling Transmission Lines
IPC: H03H7/48
Filed: 1967-07-25
Abstract: 1,187,666. Transmission line couplers. JERROLD ELECTRONICS CORP. 25 July, 1967 [24 Aug., 1966], No. 34175/67. Heading H4R. [Also in Division H1] In a TV signal distribution system, two voltages, derived respectively from an inductive and a capacitative coupling to the coaxial line 1, 2 are added vectorially and applied to the tap line 3, 4. The two voltages are of equal magnitude and in phase for one direction of transmission, but in phase opposition for the other direction. A coil 6, wound upon a ferrite core 7, is inductively coupled to inner conductor 1 and is connected through a resistor 6 to the centre tap of an autotransformer 8 across which the second voltage is applied. The resistor 6 provides a matched termination for the line 3, 4. The coil 6 is installed by cutting away some of the outer conductor and dielectric of the line 1, 2 in such a manner that signal propagation is not interupted.
Patent GB-995090-A (GB)
Title: Two-colour optical pyrometer and methods of verifying and correcting same
IPC: G01J5/60
Filed: 1961-09-25
Abstract: 995,090. Two colour optical pyrometer. INSTITUT DE RECHERCHES DE LA SIDERURGIE. Sept. 25, 1961 [Oct. 3, 1960], No. 34181/61. Heading G1A. A two colour optical pyrometer of the type wherein the colour temperature T of incident radiation 1, Fig. 1, is determined by measuring the relative intensities e# 1  and e# 3  of the two spectral bands # 1  and e# 3  in the radiation by means of a photo-cell and optical filter assembly 3 and using the relationship A + B/T = K log e# 1 /e# 3  = E where, A, B and K are constants and E is the output of an analogue system, is checked by providing calibration curves between the temperature T and output E 1  for two different pairs of spectral bands, # 1 , #3 and # 2 , # 4 , and ensuring that the indicated temperature is the same when the pyrometer is rapidly switched from one spectral band pair to the other. The filter assembly 3 is rotated by motor 41 to provide four successive outputs e 1 , e 2 , e 3 , and e 4  (see output 5), from the photo-cell 2, representing the intensities of the bands, # 1 , # 2 , # 3  and # 4  in the situation. The output signals are fed via an electron multiplier 6, to a logarithmic transformer 7, which provides signals representing log e 1  log e 2 , log e 3  and e 4 . These signals are then fed, via amplifier 8 to two gates 9a and 9b. With switch 11 in the position shown device 10a, keyed to the shaft of motor 4 causes pulse generator 12 to generate pulse d i  to unblock gate 9a and pass signal log # 1  therethrough and pulse d3 to unblock gate 96 and pass signal log # 3 therethrough. The toogoted pulse signals are converted to D.C. signals by capacitors 13a and 13b and passed via impedance adaptor stages 14a and 14b to a recorder 15 which displays the difference of the two signals, representative of log e 1 /e 3 , enabling a determination of the temperature T. By moving switch 11 down to 10b, generator 12 produces pulses gating through the logarithmic signals from the second pair of bands, to enable a second determination of T to be made. A detected error in the temperature derived from one pair of bands can be corrected by determining the difference between the temperature indicated using the other pair of bands and the temperature which should be indicated thereby.
Patent GB-1174210-A (GB)
Title: Improvements in and relating to offset presses
IPC: B41L39/00
Filed: 1968-07-18
Abstract: 1,174,210. Printing-apparatus. RICOHK.K. 18 July, 1968 [21 July, 1967], No. 34210/68. Heading B6C. [Also in Division B8] Rotary printing machines.-An offset rotary printing machine adapted to produce a selected number of copies of each of a plurality of originals 1, said number being indicated by a marking (2), Fig. 2 (not shown) on a margin of the respective original, comprises an offset roller 27 co-operating with a printing cylinder 6, adapted to clamp each original thereon with a device 6a, and with an impression roller 28, a device 3 for detecting the marking on the original, and a memory device 4 receiving signals from the device 3 and controlling the number of sheets printed by each original. Original and sheet feed.-Each original 1 is removed individually from a stack by a friction roller 5a and fed through a guide passage 7 beneath the device 3 containing a light source 8 and a photo-electric device 9 arranged to receive the reflected light. Pulses from the device 9 are transmitted to the memory device 4. The device 3 may alternatively be provided with mechanical or magnetic detecting means as required. Individual sheets 26 of paper to be printed are fed from a stack by a friction roller 25 controlled by a device 24, the actuation of which is stopped after the feed of a predetermined number of sheets by a signal from the device 4. The number of sheets fed may be determined by counting the number of swing- ing movements of an arm 30 supporting the roller 25. The tripping of numerous other devices such as the damping, inking and set-off prevention may be interconnected with the stopping and starting of the sheet feed device 24. Original and sheet delivery.-After the required number of revolutions of the cylinder 6 the original 1 is released by its clamping device 6a on a signal from the device 4 or from a sheet feed device 24 and is passed by rollers to a tray 36. The printed sheets are delivered by rollers to a tray 29, a pivoted arm 31 being actuated by the leading edge of each printed sheet so as to determine the difference, if any, between the number of sheets fed to the press and the number discharged. Damping apparatus.-Each original is initially cleaned while mounted on the cylinder 6 by a liquid 12 applied by a roller 14. Ink and water are supplied to the original by common transfer rollers 15d, 15b. The ink is supplied by a blade and duct fountain 22 and the water from a fountain 21. Set-off prevention.-The surface of the offset roller 27 is cleaned in situ by a device 32 including a roller 33 receiving washing liquid 34 from a fountain. The various operations of the press may all be controlled either directly from the device 4 or via the device 24.
Patent GB-940306-A (GB)
Title: Improvements in or relating to electric switching systems
Inventor: JACKETS ALBERT EDMUND
IPC: H03K17/723
Filed: 1961-09-25
Abstract: 940,306. Transistor switching circuits. GENERAL ELECTRIC CO. Ltd. Sept. 25, 1962 [Sept. 25, 1961; Jan. 5, 1962], Nos. 34228/61 and 509/62. Heading H3T. [Also in Division H2] A supply system for switching A.C. to a load comprises controlling at least one semi-conductor controlled rectifier by means of a pulse generator, the recurrence frequency of the pulses being at least ten times the frequency of the A.C. supply. A load 6 is fed from an A.C. supply 3 over two reverse parallel connected silicon controlled rectifiers 8, 9, the gates of which rectifiers are fed with trains of pulses from a transformer 37 in the output stage of a pulse generator comprising a blocking oscillator 30 and a bi-stable trigger 17, 24. With switch 15 open transistor 24 is conductive rendering transistor 30 non-conductive so that no pulses are produced and consequently rectifiers 8, 9 are non-conductive. Closure of switch 15 biases the base of transistor 17 so that it conducts. Transistor 24 then becomes non- conductive whilst transistor 30 becomes conductive to produce pulses to fire the rectifiers 8, 9. Alternatively, one controlled rectifier may be used connected between one diagonal of a normal rectifier bridge network. The Complete Specification describes three phase arrangements wherein three controlled rectifiers are used, one in each phase line and each paralleled by a reversely poled semi-conductor diode or in which three controlled rectifiers are used connected in the same sense around the network on the side of the load remote from the supply terminals.
Patent GB-1481973-A (GB)
Title: Document reader
IPC: G06T1/00
Filed: 1974-08-02
Abstract: 1481973 Document reading system WESTINGHOUSE LEARNING CORP 2 Aug 1974 [3 Aug 1973] 34249/74 Heading G4M A reader for a document such as an answer sheet for tests, having a timing track, has a section forming timing pulses and a section receiving the timing pulses to indicate when the next following timing pulse should occur. The first timing pulse is detected by sensor 20 and causes pulses from oscillator 28 to be fed to counter 30. The second timing pulse causes pulses from oscillator 28 to be fed to counter 34. A decoder is arranged to define a window depending on the count value in which the succeeding timing pulse is considered to be valid and not a random mark on the document. The pulse will be either a timing pulse received in the window period or a pulse produced by a comparator 36 when the count in the two counters 30, 39 is the same, or both. The first of these pulses only is passed by a pulse priority detector to form a timing pulse. If a timing pulse is produced first this also resets counter 34 via OR gate 40 so the comparator does not produce a signal. If comparison occurs first because the value in counter 34 is low the pulse resets counter 34 and the following correct timing pulse also resets counter 34 so discrepancies in timing do not accumulate. If several timing pulses do not fall within the window period an error is indicated by counter 46. The pulses can be produced from an electro mechanical tachometer-type pulse generator attached to a drive capstan of a document conveyer to provide a stored pulse count independent of the speed of travel of the document and dependent on pulse spacing allowing counter 30 to be present according to the document used.
Patent GB-446810-A (GB)
Title: Improvements in respiratory equipment particularly for gas masks and the like
IPC: A62B9/04
Filed: 1935-12-11
Abstract: 446,810. Respiratory appliances. SOC. ANON. DES GAZ INDUSTRIELS S.O.G.A.Z., 30, Avenue Rittweger, Haren-Nord, Brussels. Dec. 11, 1935, No. 34305. Convention date, Sept. 11. [Class 81 (ii)] Breathing apparatus is so supported by straps on the body that the filter canister and oxygen cylinder are disposed at the sides and the breathing bag at the back of the wearer. As shown, a belt 1 carries pockets 4, 5, carrying the oxygen cylinder 6 and canister 7 respectively and is connected to braces 2, 3, at the crossover of which is supported a four-way union piece 14. The piece 14 is connected by flexible tubes 13, 17, 18 with the cylinder 6, the canister 7, and the inhaling valve 19 of the mask respectively ; the piece also carries the breathing bag 16. A flexible tube 21 connects the exhaling valve 20 of the mask to the other end of the canister 7.
Patent GB-448113-A (GB)
Title: Improvements in or relating to thermionic amplifiers
IPC: H03F1/50
Filed: 1934-11-30
Abstract: 448,113. Distributing music &c. KOLSTER-BRANDES, Ltd., and EARP, C. W., Cray Works, Sidcup, Kent. Nov. 30, 1934, No. 34408. [Class 40 (iv)] [See also Group XL] An amplifier for a wide band of frequencies received over a low impedance line, e.g. radiofrequency signals extending from 150 to 1500 kc. distributed by a line with interposed amplifiers, comprises a number of valves in parallel each with its input connected across one element of a series-resonant circuit, these circuits being tuned to frequencies chosen at regular intervals within the band. Similar connections may be made on the output sides of the valves to an outgoing line. The input line I has one side earthed and is closed by a coil L and resistance R. Across it are connected a number of series-resonant circuits, each comprising a coil G1 .... G8, and a condenser G9 ... G16. The grid-cathode circuits of the respective valves V1 ... V8, which may be pentode valves, are connected across the respective condensers, and include a common biassing-resistance R2 and shunt condenser C2. The whole frequency range is divided into sub-bands and each resonant circuit is tuned to the mean frequency of a sub-band, so that its impedance for that sub-band is low and is thus matched to the low impedance line. On the output side, the line O is bridged by a coil L1 and resistance R1, and in addition a number of series-resonant circuits comprising coils P1 ... P8 and condensers P9 ... P16 are connected across the line. The plate-cathode circuits of the valves are connected across the respective condensers. Further valves and associated resonant circuits may be added to cover further sub-bands. Particular ranges of frequency may be boosted and the amplifier given any desired overall frequency characteristic. Automatic volume control may be provided for any sub-band amplifier that is liable to receive exceptionally strong signals.