baber/WOPTO huggingface dataset:
Patent GB-365483-A (GB)
Title: Protective means for massive metal parts against stray magnetic fields
IPC: H01F27/36
Filed: 1931-06-27
Abstract: 365,483. Inductances. AKT.-GES. BROWN, BOVERI, ET CIE, Baden, Switzerland. June 27, 1931, No. 18651. Convention date, June 27, 1930. [Class 37.] For preventing the production of eddy currents in metal parts adjacent to inductive apparatus the apparatus is provided with a composite shield comprising plates of magnetic material d and plates of diamagnetic material of good electrical conductivity such as copper e interposed between the windings and parts such as the casing c to be protected. A number of such shields overlapping at their edges may be superposed on each other.
Patent GB-146539-A (GB)
Title: Improvements in or relating to thermionic valves for wireless telegraphy and other purposes
IPC: H01J21/16
Filed: 1920-07-05
Abstract: 146,539. Radio Corporation of America, (Assignees of Weagant, R. A.). Feb. 1, 1916, [Convention date]. Vacuum tubes.-A thermionic valve applicable as a detector, amplifier, or oscillation generator comprises a vacuum chamber v containing a hot electrode f and cold electrode p, the latter preferably being in the form of a disk or, as shown, a cylindrical bucket. External to the chamber are two separated terminal members k, k<1> respectively in proximity with the electrodes f, p. The members k, k<1> are shown as cylinders embracing the chamber v.
Patent GB-218121-A (GB)
Title: Improvements in radiators for heating buildings
IPC: F28F21/08
Filed: 1923-07-19
Abstract: 218,121. Lombardi, M. July 19, 1923. Radiators.-In radiators for heating buildings &c. of the kind having concave radiating surfaces, each section or element comprises a pair of interconnected four-sided conduits having concave surfaces of parabolic form, the outwardly directed sides 6 - - 9 being all of equal width and approximately twice the width of the inwardly directed surfaces 20, 20<1>, 22, 22<1>. At the top and bottom the conduits merge into plane surfaces 16, 17, while the several elements are connected by the usual threaded nipples 3. Instead of resting on the floor of a room the radiator may be supported from a wall by means of cramp irons 25<1> engaging recesses in screw-threaded stoppers 24<1> inserted in place of the connecting nipples,
Patent GB-785427-A (GB)
Title: Improvements in screens and sieves
Inventor: MUSGROVE ROBERT ALAN
IPC: B07B1/46
Filed: 1956-06-15
Abstract: 785,427. Grids for straining apparatus. DE LA RUE & CO., Ltd., T. June 15, 1956, No. 18695/56. Addition to 784,995. Class 46. [Also in Group II] The slats of the parent Specification are modified by having the taper 6 extending from the top edge 2 to almost the bottom edge and opposite the spacing elements the slat has vertical sides, the top edge maintaining constant width throughout the length of the slat. The upper corners of the spacing elements may be cut away to increase the lengths of the slots.
Patent GB-203465-A (GB)
Title: Improvements relating to electric switches, circuit closers and the like
IPC: H01H1/10
Filed: 1922-07-07
Abstract: 203,465. Davies, D. R.., and Metropolitan-Vickers Electrical Co., Ltd. July 7, 1922. Laminated contacts; abutting and wiping contacts.-For circuit-closers &c. intended for heavy currents, fiexibility of contact is obtained by putting a brush 3, 4 composed of a number of curved laminated plates between terminals 2, 11 capable of slight movement from and towards one another. The brush may be fixed on a support yieldingly attached to one of the contact blocks.
Patent GB-676018-A (GB)
Title: Anti-theft device
IPC: G08B15/00
Filed: 1949-07-16
Abstract: 676,018. Man-traps. TAYLOR, J. July 16,1949, No. 18787/49. Class 5(i) An anti-bandit device for banks comprises a two-part floor grille 16 adjacent to the cashier's window 10 which can be electrified to shock a potential thief. The system may also include a conducting strip 6 along the bank counter 4 in parallel with one of the grille parts so as to provide an additional shock to a bandit leaning across the counter. The grille, Fig. 3a, comprises the outer frame 16a and centre limb 16e in electrical contact and a second part 16g insulated from the first part. The circuit shown in Fig. 8, comprises a transformer 32, the secondary of which supplies current to the grille-parts and counter-strip, the operating switch 33 being located inside the cashier's lobby. A transformer 44 is connected through a further switch 48 to alarm chimes 14 and to relays 55, 56 operating external alarms. A further grille 22 is located in front of the bank door and is simultaneously charged together with the door handle 20, to prevent the subsequent escape of the thief.
Patent GB-596159-A (GB)
Title: Improvements in and relating to drill chucks
IPC: B23B49/00
Filed: 1945-07-23
Abstract: 596,159. Drilling. HARRIS, C. S., and GOLD, B. July 23, 1945, No. 18822. [Class 83 (iii)] A drill-chuck has means for determining the depth of'hole to be drilled cornprising a thrust-bearing 5 spherically seated in a housing 3 which is adjustably secured to a sleeve extension 2 of the chuckbody 1. A spring-clip 8 retains the thrust-bearing within its housing. The required lateral adjustment to the stop-face 10 is made by threading the housing 3 along the sleeve 2 and securing it in position by a set-screw 11, a graduated scale 12 indicating the adjustment made. The face 10 contacts the drilling-bush or work and is self-aligning therewith.
Patent GB-839607-A (GB)
Title: Amplifier output system for rebalancing motors
IPC: G01M1/22
Filed: 1958-06-12
Abstract: 839,607. Electric correspondence control systems. LEEDS & NORTHRUP CO. June 12, 1958 [Sept. 9, 1957], No. 18859/58. Class 40 (1). [Also in Group XXXVII] The output stage of the amplifier of a selfbalancing system feeding the control winding of a two-phase servomotor comprises two fullwave rectifiers connected so that there is no resultant D.C. field in the servomotor to produce a continuous braking effect. As shown (Fig. 1) an A.C. error signal from a balanceable network 11 is amplified at 10 and fed in pushpull to two double-triode valves 22A, 22B whose anodes are A.C. fed so that only one triode conducts in each half cycle, the resulting anode currents flowing through the half windings 12A, 12B of the control winding 12 of a servomotor 13, being equivalent to an alternating current of the same frequency as the supply to the reference winding 15, and having a leading or lagging phase relationship with the current in winding 15 depending on the sense of the error voltage from network 11. The motor 13 is thus made to rotate in the direction which removes the unbalance in network 11. The valves 22A, 22B are biased from the A.C. supply via rectifiers 35, and the standing D.C. anode currents through half-windings 12A, 12B are equal and opposite and therefore have no resultant effect. Negative feedback is derived from winding 12, e.g. by transformer 27, to compensate for variations in the supply voltage. A # component may be derived from motor 13 and added to the input error signal to the amplifier 10 to reduce hunting.
Patent GB-477901-A (GB)
Title: Improvements in and relating to marine engine plant
IPC: F01K7/02
Filed: 1936-07-08
Abstract: 477,901. Marine power plant. BAUER, G. July 8, 1936, No. 18949. [Class 110 (iii)] [Also in Group XXXIII] Marine power plant employing high-pressure and high-temperature steam and comprising a multi-cylinder reciprocating engine and an exhaust steam turbine includes also an advance high-pressure turbine and a steam cooler is introduced between this high-pressure turbine and the high-pressure cylinder of the reciprocating engine. For normal forward travel, steam is passed first through the high-pressure turbine, but for reversing it passes first to the steam cooler and the high - pressure turbine is byepassed. The plant comprises a reciprocating engine 1, an exhaust turbine 2 driving a propeller shaft 5 through reduction gears 6, hydraulic coupling 19 and reduction gears 7, a condenser 3 and an advance turbine 12 is coupled through reduction gears 13 and a hydraulic coupling 19 to the gear 7. Further, there is a steam cooler 11 which is in the pipeline 10 from the high-pressure boiler 8, the latter being also connected by a pipe-line 9 with the high-pressure turbine 12. For normal forward running, the valve 17 is opened and valve 18 is closed to cut out the cooler 11, but on reversing the valve 17 is closed and the valve 18 opened so that the steam first passes through cooler 11 before reaching the highpressure cylinder 15 of the reciprocating engine. Exhaust steam from the engine is in this case turned direct to the condenser instead of to the exhaust turbine 2. Instead of mechanical and hydraulic connection of the engines with the screw propeller shaft 5, an electric drive may be used. The controls of the gear couplings and valves of the turbines and cooler may be coupled to the reversing control for simultaneous action.
Patent GB-147038-A (GB)
Title: Improvements in or relating to transformation of polyphase currents into practically constant direct currents
IPC: H02M1/30
Filed: 1918-01-08
Abstract: 147,038. Corbino, O. M. July 28, 1917, [Convention date]. Addition to 112,938. Void [Published under Sect, 91 of the Act]. Commutator switching-arrangements; converting alternating and direct currents.-In the rotating-jet apparatus for rectifying polyphase currents described in the parent Specification, the width of the contact plates is regulated so that the intervals between successive contacts between the jets and plates may be varied down to zero. For this purpose, the plates may be trapezoidal or triangular in shape, and may be raised or lowered to vary the pericd of contact. The plates may be backed by insulating-material such as porcelain, the backing extending beyond the edges of the plates, or the casing of the jet apparatus may have an insulating-lining. When the intervals between successive contacts are very small or zero, the electrolytic cells described in the parent Specification may be omitted. Two vessels, each with a double jet and three contact plates, may be employed, the jets being insulated from each other but mechanically connected at rightangles. The direct-current load is connected between the vessels.
Patent GB-694866-A (GB)
Title: Improvements in paper filing devices
IPC: B42F9/00
Filed: 1950-07-31
Abstract: 694,866. Filing papers. SAUNDERS, A. H. July 24, 1951. [July 31, 1950] No. 19057/50. Class 146 (i). A device for filing papers includes a clip 11 comprising a base member 10, adapted to be secured, as by rivets 12, to a folder 13, and a gripper member 17 hinged together and having spring means 21 for positively locating the clip in either an open position with the members substantially at right angles or a closed position with the members superposed, one of the members having secured thereto a resilient post 22 which is adapted to be threaded through holes punched in the sheets 23. The members 10, 17 may be triangular or, as shown rectangular metal plates, cranked inwardly near one end at 14, 19 and with that end bent inwardly and with alternate projections bent at 15, 20 round a hinge pin 16. An arcuate leaf spring 21 is snapped into the depressions 14, 19 and is of such size that in the open position of the clip, it passes over the dead centre to positively hold the clip open. The post 22, which comprises a helically coiled wire or may be a cylinder of rubber or similar resilient material, in the open position springs up vertically but in the closed position is held down by the member 17 which may be bowed outwardly so that the clip may take more sheets 23. When a rectangular plate 17 is used, one corner 18 is curled over so as to uncover more of the sheets 23 and to facilitate opening of the clip. The, or more than one, clip 11 may be provided at any position along the marginal edge of a folder.
Patent GB-516485-A (GB)
Title: Improved portable race starting barrier
IPC: A63K3/02
Filed: 1938-06-28
Abstract: 516,485. Race starting barriers. GRAY. R. G.. June 28, 1938, No. 19162. Convention date, Aug. 11, 1937. [Class 132 (i)] A race starting barrier comprises posts 5 arranged on each side of the track and each, carrying a slanting rail 8 on which brackets 9 can slide, the barrier 13 being mounted on the latter and holding means are provided on each post to retain the barrier in its lowest position, one of the means being directly operable to release both ends of the barrier. One of the brackets is held by a rod 20 which can be passed through two eyes over the lower position. of the bracket. The other bracket is held by a. hook 28. When the rod 20 is withdrawn by rope and linkage 24 and 21 one end bracket is freed and when the barrier becomes loose the other bracket slips off the hook 28. The barrier is then raised by stitched rubber cords 16 acting through ropes 14.
Patent GB-710767-A (GB)
Title: Improvements in welding transformer switching circuits
IPC: G06M1/02
Filed: 1951-08-14
Abstract: 710,767. Control systems for welding arcs. SMIT & CO'S. TRANSFORMATORENFABREK, N. V. W. Aug. 14. 1951 [Sept. 16, 1950], No. 19172/51. Class 38(4) A welding transformer switching circuit in which in series with the primary winding 3 of the transformer is connected a choke coil 5 to reduce, for the safety of the operator, the no-load voltage of the secondary winding 4 during periods of nowelding and which coil 5 may be shortcircuited during welding periods by the contacts 10 of a first relay, the coil 9 of which is energized through the contacts 12 of a second, and voltage sensitive, relay, whose coil 11, then de-energized, is connected across the secondary winding 4, is characterized in that in series with the voltage relay coil 11 is connected a resistance 13 which is short-circuited by further contacts 14 of the first relay during nowelding periods. In operation, after a period of welding, the secondary no-load voltage rises to energize coil 11, whereupon the opening of contacts 12 de-energizes coil 9 to open contacts 10 and thereby remove the short-circuit on choke coil 5. The effective connection in circuit of coil 5 reduces the secondary no-load voltage to its safety value, and the short-circuiting of resistance 13 by the then closed contacts 14 prevents such voltage reduction from again deenergizing the voltage relay 11, 12 to shortcircuit the choke coil 5.
Patent GB-568492-A (GB)
Title: Improvements in valve gear for steam distribution in duplex pumps
IPC: F04B9/12
Filed: 1943-11-17
Abstract: 568,492. Engine valve-gear. CARRUTHERS & CO., Ltd., J. H., and JOHNSTONE, G. K. Nov. 17, 1943, No. 19223. [Class 122 (ii)] In a valve-gear for a duplex pump, the valve spindles A<1>, B<1>, each carry projecting lugs E. F engaging one main valve G or H and one cut-off valve L, K working on the back of the other main valve, and guides E<1>, F<1> engaging seats M in the valve chest. Each main valve is operated by the rod of the cylinder other than that which it serves and each cut-off valve is operated by the rod of its own cylinder as described in Specification 177,115, [Class 122 (ii)]. The valves are all flat slab-like members.
Patent GB-771594-A (GB)
Title: Receiving channel amplifier and signal receiver
IPC: H04Q1/446
Filed: 1953-07-10
Abstract: 771,594. Voice frequency receivers. STANDARD TELEPHONES & CABLES, Ltd. July 10, 1953 [Nov. 3, 1952], No. 19228/53. Class 40 (4). In a communication system using out-ofband voice-frequency signalling, a receive amplifier dealing with the communication and signalling currents includes a reflex circuit arrangement whereby a predetermined harmonic of the signalling current is further amplified for actuation of the signalling relay. Incoming signals are applied to amplifier 1 over a transformer 3 and communication currents pass to terminals 7 over an anode transformer 4. The signalling current is selected by a tuned transformer 6 and harmonics thereof developed in a network 8 are applied to the grid of valve 1 via a potentiometer arrangement comprising a resistor R5 and the tuned primary of transformer 9. The amplified harmonic is selected by a tuned transformer 5 and applied via rectifiers Gl3, Gl4 to operating winding 12 of relay S. Changes of signal level and variations in the supply voltage are compensated for by a loading network 10 connected across the secondary of transformer 9 which network includes rectifiers Gl5, Gl6 biased by the difference between the operating voltage, and the hold voltage applied to the hold coil 13 of relay S.
Patent GB-1414095-A (GB)
Title: Data processing system
IPC: G06F15/177
Filed: 1973-04-24
Abstract: 1414095 Data processing system COMPAGNIE INTERNATIONALE POUR L'INFORMATIQUE 24 April 1973 [24 April 1972] 19264/73 Heading G4A A data processing system includes two redundant microprogrammed processors and is arranged such that all the data in the processors, e.g. operands, instructions &c., is compared, a mismatch initiating a test routine in both processors to identify the faulty processor. The arrangement provides a more rapid detection of faults than in prior systems in which only the results of processing operations are compared. Comparators 8, 58 energize their outputs via gates 27, 77 when a mismatch is detected to request via inputs 34, 84 a test routine in the processors, to inhibit gates 9, 59 to prevent data being transmitted to the external units, and to inhibit further comparisons of data. Gates 27 and 77 are inhibited by exclusive -OR 48 when the comparator outputs differ indicating a comparator failure. Following the test routine the faulty processor energizes an output, 35, 85, to inhibit its gate 9, 59, and control bi-stable 30 to enable the gate 59, 9 of the other processor which provides an output 86, 36 to confirm the setting of bi-stable 30. If, however, at the end of the test routine, both processors generate outputs 86, 36 an AND gate 50 generates an output to request more extensive test procedures to identify the faulty processor.
Patent GB-1103165-A (GB)
Title: Improvements in or relating to frequency dividing circuits
Inventor: SUCHARCZUK MAREK
IPC: H03B21/02
Filed: 1964-05-08
Abstract: 1,103,165. Frequency dividing circuits. GENERAL ELECTRIC CO. Ltd. 7 May, 1965 [8 May, 1964], No. 19270/64. Heading H3T. In a frequency dividing circuit having a series and shunt modulator 4, 6 connected in cascade between input 1 and output 2, the application of an input signal of frequency NF where N is an odd integer causes a loop within the circuit to oscillate until the attenuation presented in this loop by the shunt modulator 6 increases to stop these oscillations so that the circuit is started and continues to operate with oscillations derived from the shunt modulator 6 to give an output of F at 2. As shown, with an input of 5F applied to series modulator 4 the loop, comprising modulator 4, transistor 8, modulator 6 and transistors 13 and 19, oscillates at a frequency of 3F. This frequency is applied to modulator 4 at 3 so as to give an output of 2F from the tuned amplifier 5. The shunt modulator 6 is supplied with a frequency 2F from the output winding 11 of amplifier 5 and with frequency F from the output winding 22 of a further transistor amplifier 19 tuned to F and coupled via transistor amplifier 13 to the output of modulator 6. The output winding 23 of amplifier 19 also supplies the output F of the circuit at 2. When the attenuation presented by modulator 6 increases to stop the loop oscillating the circuit has started and an output frequency of 3F from the modulator 6 is amplified by transistor 13 and tuned amplifier 15 and is supplied to modulator 4 from winding 18 so as to maintain the circuit operating. The circuit may be modified so as to effect frequency division by a factor of 3 by arranging oscillations of frequency F from modulator 6 to be supplied to modulator 4 in place of signals of frequency 3F.
Patent GB-706131-A (GB)
Title: Improvements in or relating to presses for extruding metal
IPC: B21C25/06
Filed: 1951-08-15
Abstract: 706,131. Extruding. SIEMENS-SCHUCKERTWERKE-AKT.-GES. Aug. 15. 1951 [Aug. 15, 1950], No. 19295/51. Class 83 (4) In an extrusion press with the mandrel and die arranged co-axially with a ram and a mandrel-holding tube in a receiver which bears against a separate entablature containing the die, the mandrel is so arranged in the holder as to be axially displaceable and may be withdrawn from the press in a direction towards the ram. In a cable sheathing press a hollow mandrel 15 is supported in the steel receiver by a tube 10 held in position in a shrink-fitted jacket 12 by radial arms 11 which divide the chamber into two parts 14, into which the metal to be extruded, e.g. aluminium, is introduced in the form of two preheated half-shells. The mandrel is axially adjustable by means of a pressure screw 16, and the die 20 is laterally adjustable by means of taper headed screws 19. The cable core is fed through a double-walled tube 21. The hollow ram 22 is reciprocated by a hydraulic plunger 23 and is slotted at 24, to form two arms having cross sections similar to those of the chambers 14. The mandrel may be removed, after removal of the tube 21 and screw 16, by a draw-bolt 28 screwed into the end of the mandrel and operated by a hand nut 29, or by coupling said draw-bolt to the ram by a cotter 33.
Patent GB-245812-A (GB)
Title: Improvements in or relating to the manufacture of artificial wood and of building orconstructional elements or other articles or materials therefrom
IPC: C04B18/28
Filed: 1924-08-14
Abstract: 245,812. Novocrete & Cement Products Co., Ltd., and Burney, C. D. Aug. 14, 1924. Moulds; stationary-mould machines.-A mould for producing building elements or other articles from a moist mixture of mineralized sawdust and cement is perforated and contains a lining of sheet zinc having perforations out of alignment with those of the moulds. The lining is attached to the mould by springs which allow it a limited movement away from the mould to facilitate the entrance of air through the perforations when the moulded article is extracted. The moulding may be performed in a press having a mould box B in which the mould is inserted. Extracting hooks E attached to the plunger D<2> raise the mould out of the box after the pressing operation is completed. Specifications 220,677 and 225,912, [both in [Class 20 (iv), Floors &c.]; 236,450, [Class 22, Cements &c.]; 238,948 and 240,561, [both in Class 20 (iv), Floors &c.]; 244,142; 244,178 and 249,899, [both in Class 22, Cements &c.]; 252,906. [Class 70, Indiarubber &c.], and 253,007, [Class 22, Cements &c.], are referred to.