baber/WOPTO huggingface dataset:
Patent GB-532074-A (GB)
Title: Improvements in or relating to deflecting arrangements for use with cathode ray tubes and the like
IPC: H03K4/34
Filed: 1939-08-16
Abstract: 532,074. Valve generating circuits. BAIRD TELEVISION, Ltd., and RIDGEWAY, D. V. Aug. 16, 1939, No. 23600. [Class 40 (v)] In a valve oscillator for producing scanning currents in which the anode and grid circuits are coupled by a transformer 2, 4 wound upon a yoke 3 for producing a magnetic field for deflecting the beam, part of the anode current passes via choke 7 through a part of the winding 4 in the grid circuit, thereby avoiding a steady deflection of the beam. The anode current of other valves 9, 10 may also pass through part of the winding 4. The total ampere turns of winding 4 are substantially equal to those of winding 2. The triode 1 may be replaced by a pentode having its screen grid fed through an undecoupled resistance, Fig. 2 (not shown).
Patent GB-824507-A (GB)
Title: Improvements in or relating to devices for continuous filtration, drainage, screening or similar treatment of suspensions
IPC: D21D5/06
Filed: 1957-07-25
Abstract: 824,507. Centrifugal strainer separators. SUNDS VERKSTADER A. B. July 25, 1957 [July 27, 1956], No. 23655/57. Class 46. A suspension, e.g. of cellulose pulp, to be filtered, is fed into a hollow shaft 4, Fig. 1, rotated by a motor 5, and passes along hollow arms 2, 3 to be discharged within a planetary drum 1 rotated about its shaft 6 by a bevel drive 11 driven by engagement of rotary gear 9 with a fixed gear 8. Filtered pulp is continuously disengaged from the part of the drum momentarily nearest the shaft 4 by the centrifugal force acting reversely. Such pulp is prevented from mixing with unfiltered suspension in the inlet zone by radial partitions 7, of which four are provided, between the hub 7a and the drum surface. Filtered pulp falls through the open bottom of the drum whilst liquid is collected in a channel 15. The drum may be rotated about its own shaft either by a separate motor or by appropriate directional feed of the unfiltered suspension under pressure, as alternatives to the bevel drive. In Fig. 4, the partitions 7 are replaced by baffles 12, 13 rigidly fixed to the arm 2, the end of baffle 12 being shaped to press the filtered pulp against the drum surface. In this embodiment the arm 3 is dispensed with and nozzle 14 extends over the whole height of the drum.
Patent GB-698064-A (GB)
Title: Improvements in the high-speed control of electrical machines
IPC: H02P7/34
Filed: 1951-10-11
Abstract: 698,064. Exciting dynamo-electric machines. MBTROPOLITAN-VICKERS ELECTRICAL CO., Ltd. Oct. 11, 1951 [Oct. 18, 1950], No. 23730/61. Class 35. [Also in Group XXXVII] A motor 2 drives a reversible rolling mill and is supplied from a generator 1 having a fullycompensated amplidyne exciter 3, a control winding 4 of which is energized from a constant source 26 through a reverser 24, a speed-setting rheostat 21, and a resistor 23 which reduces the time-constant of the circuit of the control winding. An exciter field winding 5 opposes the winding 4 and is connected across the armature of the generator 1 so that the voltage of the generator is substantially independent of the speed at which it is driven. A winding 7 is wound on the poles of the main generator so as to be energized in accordance with the rate-ofchange of generator flux and voltage, the exciter having a field winding 8 connected to the winding 7 and operating to restrict the acceleration of the motor. An excessive rate-of-change of motor armature current is prevented by means of a transformer secondary winding 11 which is connected to both a field winding 14 of the exciter 3 and the brushes 12, 13. The transformer may be replaced by an inductive shunt, or it may have two secondary windings feeding the winding 14 and the brushes 12, 13, separately. A motor field winding 16 is supplied from the source 26 through an undercompensated amplidyne 17 which opposes the voltage of the source and provides a rapid change of motor field excitation. Opposing amplidyne field windings 18, 19 are energized from the source .26, the winding 18 being controlled by a rheostat 22 which is interlocked with rheostat 21. A too rapid response of the amplidyne 17 is prevented by means of winding 27 which is connected to winding 28 linking the cross-flux of the machine. Rectifiers 29 are provided for more sensitive operation.
Patent GB-1306262-A (GB)
IPC: B01D47/06
Filed: 1970-05-15
Abstract: 1306262 Valves NATIONAL DUST COLLECTOR CORP 15 May 1970 [16 June 1969] 23740/70 Heading F2V [Also in Division F4] Gas-tight sealing of a flow path within a substantially rectangularly sectioned housing 88, which housing is disposed between flow conduits 82, 84, is effected by means of a rectangular and pivoted closure member 120 which has a trough 136 formed along its periphery and which is movable between a housing- closed position, shown in full lines, and a housing-open position, shown in chain-dotted lines, by means of a double-acting piston and cylinder unit 108 acting through a lever 114 on the valve member pivot 122. When in the housing-closing position, a skirt 142, 144, which extends inwardly and downwardly from the housing interior wall, protrudes into the trough and a dispensing valve 146 feeds water over the skirt and into the trough thereby creating the desired seal. When retracted to the housing-open position, the valve member is entirely accommodated within a recessed portion 92 of the housing 88. In a modification (Fig. 3, not shown), the valve housing is connected at one end to two parallel supply conduits and at its other end to one outlet conduit and the valve member pivot is disposed at the one end of the housing and between the two supply conduits. Sealing of either one of the two inlet conduits by the one valve member is facilitated by providing each conduit with a skirt and the valve member with two peripheral troughs arranged back-to-back.
Patent GB-1434731-A (GB)
Title: Fastening devices
IPC: F16B19/10
Filed: 1972-05-20
Abstract: 1434731 Releasable fastenings H H ROBERTSON (UK) Ltd and McKENZIE KING PLASTICS Ltd 20 Aug 1973 [20 May 1972] 23840/72 Heading E2B A fastener for securing together two members, e.g. plates X, Y comprises two tubular parts 10, 11 positioned on the shank of a screw S, the part 11 having deformable arms 17 which, when the parts are forced together by tightening of the screw, are deformed outwardly to prowide an anchor as shown in Fig. 7. The part 10 has angled parts 19 against which the arms 17 coact, and a head 12 formed with a bead 14 to provide a fluid seal. The fastener may be formed from metal or a plastics material such as nylon.
Patent GB-614894-A (GB)
Title: Spring clips for supporting or suspending display matter or assemblies and the like
IPC: A47F5/01
Filed: 1946-08-12
Abstract: 614,894. Stands or hangers for plaques. JONES, P. Aug. 12, 1946, No. 23887. [Classes 52 (iii) and 52 (iv)] A single length of resilient wire is formed with a spring loop 1 and crossed limbs 2 terminating in flattened ends 7 shaped with tapered recesses to grip the edge of a flat article with a wedging action. The ends of the limbs may be upstanding from the part with the loop, which serves as a base, or for suspension purposes, the ends may be coplanar with the loop which then forms a suspension eye.
Patent GB-244548-A (GB)
Title: Improvements relating to automatic electric circuit-breakers
IPC: H01H71/52
Filed: 1924-10-09
Abstract: 244,548. Johnson, E. M., and Metropolitan-Vickers Electrical Co., Ltd. Oct. 9, 1924. Automatic cricuit-breakers.-Automatic circuitbreakers of the loose handle type have each end of the bridge piece or equivalent capable of independent movement, the closing mechanism first moving one end into engagement with its co-operating contact where it is held by tripping mechanism against a spring return after which the other end is brought into engagement with the other fixed contact so that if excess current flows on completion of the circuit the end which was first moved into contact engagement may be immediately tripped to open the circuit. As shown in Figs. 5 - - 7 the bridge piece 3 is carried by a member 6 which on operation of a cam 12 by a handle 11 is moved from the position shown in Fig. 5 to cause the arcing tip 5 to engage a fixed contact 1 the toggle 7 being held in its extended position by an automatic latch 8 as shown in the dotted position in Fig. 6. If the bell crank 13 is now rotated its forked end engages the pivot pin 14 between the member 6 and a pivoted link 9 and causes the lower end of the bridging contact 3 to engage the fixed contacts 2 so completing the circuit. If however on completion of the circuit the current is of a sufficiently high value to operate the overload device the catch 8 is immediately withdrawn and a return spring which may be connected between the pivot 15 and a fixed point causes the toggle 7 to collapse and moves the contact 3 to break the circuit as shown in Fig. 7.
Patent GB-1182185-A (GB)
Title: Improvements in and relating to Hinges.
Inventor: EBDON RONALD ALFRED
IPC: E05D11/00
Filed: 1967-05-23
Abstract: 1,182,185. Security hinge. F. & C. GOULD Ltd. 23 May, 1968 [23 May, 1967], No. 23952/67. Heading E2F. A security hinge consists of spaced first and second members, 3 and 4 respectively of an elongated hinge pivot. A first leaf is secured to 3 and 4 and a second leaf to a first intermediate member 5 which is engageable for its part 11 in a recess in 3. A second intermediate member 6 fits inbetween 5 and 4. A pin 7 is slidable within the bores 10, 9 and 8b and holds the hinge members together in the position shown. The pin 7 can only be removed when the hinge is inverted which is impossible when one member is mounted on the door jam and other member on the door. The circuit wiring 13 of an electrical alarm system may pass through the bore 15 and 8a.
Patent GB-442295-A (GB)
Title: Packing for rotary engines
IPC: F01C1/20
Filed: 1934-08-20
Abstract: 442,295. Rotary engines. WANKEL, F., 15, Obertorstrasse, Lahr, Baden, Germany. Aug. 20, 1934, No. 23984. [Class 110 (ii)] The engine comprises a part annular working chamber 1, a piston 7 integral with a rotary end-plate 5, and a rotary abutment 8 on a shaft 9, which is parallel with the piston shaft 6. Packing for the chamber 1, Fig. 5, is constructed of a series of bars 11, pressed outwards by springs 36, and slotted rollers a 12 which bridge the ends of two adjacent bars 11. The end 8<11> of the abutment disc 8 is raised slightly to lessen the frictional contact between it and the plate 51 which partly overlaps the disc 8. The ends of the packing are placed at the ends of the working stroke, that 16, 20, 19, 18, being pressed against the face of the disc 8. The latter is pressed axially upwards by means of a lever 66 engaged by a spring 64, and a piston 62 whose top is open to pressure in the working chamber 1. A toothed segment 82 engages a rack 86 on the end of the shaft 9. The end face of the working chamber may be pressed against the face of the abutment by similar means (see Fig. 7) in place of the packing 16, 20, 19, 18, and the lower part of the casting forming the chamber 1, pressed upwards by spring and piston means 63, 61, respectively. Fig. 2 shows an arrangement for an internal-combustion engine with two working chambers 1, and a combustion chamber 45, with open ends, placed between the chambers 1. The end faces of the pistons 7 serve to open and close the. end ports of the combustion chamber. The latter may be supported at the end of a fuel supply pipe which forms a cantilever spring.
Patent GB-829863-A (GB)
Title: Improvements in or relating to geophysical survey apparatus
Inventor: GRIBBLE PETER DOIDGE
IPC: G01V3/165
Filed: 1955-08-05
Abstract: 829,863. Geophysical survey apparatus. MULLARD RADIO VALVE CO. Ltd. Aug. 7, 1956 [Aug. 5, 1955], No. 24163/56. Divided out of 829,862. Drawings to Specification. Class 37. Aerial geophysical survey apparatus consisting of transmitting and receiving coils mounted at or near opposite wing tips of an aircraft includes means for minimizing the variation in coupling between the said coils due to bending of the wings. The above means consists of situating the coils at a certain distance below the neutral axis of the wing. A mathematical verification and description of how to calculate the necessary distances is given in the Specification. This Specification is concerned with coils having axes parallel to the line of flight. The apparatus is designed to be used with apparatus described in Specification 829,861.
Patent GB-230744-A (GB)
Title: Swinging hobby-horse
IPC: A63G9/10
Filed: 1924-10-13
Abstract: 230,744. Hodgson, H. E. Oct. 13, 1924. Swings.-A hobby-horse arranged for swinging movement is formed with an elongated barrelshaped body 2 to which one or more animal heads 3 and one or more seats 8 are attached. Stirrups 12 and mane and tail 4, 7 are secured to the body. The horse is suspended by ropes 16 from the top bar 15 of a frame 14 or the ropes 16 may meet at a point, enabling the horse to be suspended from a tree. A step 21 is secured to the frame 14. The body 2 may be made hollow or solid, of wood or metal &c., and the seats 8 are preferably detachable. A rope 22 enables the rider to set the swing in motion.
Patent GB-533526-A (GB)
Title: Improvements in or relating to gland packings for hydraulic shock absorbers
IPC: F16F9/36
Filed: 1939-08-24
Abstract: 533,526. Packings for stuffing-boxes &c. NEWTON. N. B. Aug. 24. 1939, No. 24337. [Class 122 (v)] Packing for a hydraulic shockabsorber comprises a bush c, slidable in the cylinder b and having a recess at one end to accommodate a sealing-ring l, formed with outer and inner flanges for bearing against the wall of the recess and the shaft a respectively. The other end of the bush has a shouldered portion, to support a compressible ring f and a sliding ring e. Passages k admit fluid pressure to a sealing-ring l, which is retained in the recess, so as to be axially movable therein, by a screwed plug n, which forces a washer m against the end of the bush. The screwing-in of the plug compresses the ring f by forcing the bush and the ring e against a spring ring i located in a groove in the cylinder-wall. The ring f is thereby forced outwards against the cylinderwall.
Patent GB-448921-A (GB)
Title: Improvements in pouring devices for salt and other like containers
IPC: A47G19/24
Filed: 1935-09-02
Abstract: 448,921. Powder and liquid sprinklers. PARKES, T. H., 17, Stream Park, Kingswinford, near Dudley, Worcestershire. Sept. 2, 1935, No. 24474. [Classes 18 and 125 (iii)] The pouring spout of a container for powders or liquids is fitted with a valve comprising a pin 1, a head 2, and a plate 4 having its periphery so shaped i.e. formed with flat portions 6, that when the container is inverted to discharge the contents the valve falls until the plate abuts against the sides of the spout and the contents can flow past the valve and out of the spout. The valve is made of a substance such as bone, celluloid, &c. Specification 10760/09, [Class 18], is referred to.
Patent GB-762101-A (GB)
Title: Improvements in or relating to straight bar knitting machines
Inventor: MONK SAMUEL ARTHUR
IPC: D04B11/00
Filed: 1953-09-04
Abstract: 762,101. Knitting machines. MONK (SUTTON IN ASHFIELD), Ltd., S. A. Sept. 6, 1954 [Sept. 4, 1953], No. 24571/53. Class 74 (2). The loop transfer points of a multi-division machine are divided into two separately mounted sets formed respectively by groups 1, 101 of points; and filling-up points 3, 103, associated, one with each group, are correspondingly arranged as two separately mounted sets which are operable manually, either together or individually. The filling-up points are mounted, through connections 8, 9, respectively, on rods 6, 7, linked through levers and spindles 10, 27, 12 and 11, 28, 13, to members 25, 26, in slots 23, 24 of which moves a pin 22 constantly reciprocated from the main camshaft and which can be linked to either or both of members 25, 26 by spring returned catches 29, 30, rocked by manually controlled spring returned rockers 31, 32. The manual control comprises a shaft 41 which extends the length of the machine, is rotated by means of a suitably labelled, preferably centrally disposed, hand grips and bears for each pair of rockers 31, 32, a cam 40 so shaped that successive rotations through 90 degrees will render both catches 29, 30 idle, both operative, and each, in turn, operated alone. An indexing device 42a, 43 is provided.
Patent GB-791796-A (GB)
Title: Improvements in methods of constructing the insulation of the joints of high-tensionelectric cables
IPC: H02G15/196
Filed: 1956-08-13
Abstract: 791,796. Cable joints. PIRELLI SOC. PER AZIONI. Aug. 13, 1956 [Oct. 13, 1955], No. 24686/56. Class 38 (1). In a method of insulating a joint between high-tension, paper-insulated cable cores 1, 2, subsequent to jointing the bared conductors and tapering off the cable insulation at 3, 4, auxiliary paper tubes 8, 9 are wound in opposite directions, and in directions which tend to tighten the underlying cable insulation, on the core ends, and the space between the auxiliary tubes is filled with tape windings 10, or a combination of tapes and tubes, to obtain a cylindrical surface substantially of the diameter of the auxiliary tubes. Finally, an external paper tube 11 is wound over substantially the whole of the applied insulation and the ends tapered off. A wire or woven metal tape may then be wound on to the joint and connected to the cable sheaths to provide a screen.
Patent GB-327083-A (GB)
Title: Improvements in or relating to filtering apparatus for air and other gases
IPC: B01D46/18
Filed: 1929-08-13
Abstract: 327,083. Dunlop, S., (Bartel Ges., W.). Aug. 13, 1929. Filtering. - Air &c. is filtered by passing through a series of endless bands d<1> - - d<4> travelling at different speeds. The band nearest the air inlet, which takes place through louvres a, travels at the highest speed. The bands travel over top and bottom shafts e<1> - - e<4>, f<1> - - f<4>, the shafts e<1> - - e<4> being geared together by pinions g<1> - - g<3>, h<1> - - h<3>, Fig. 4, and actuated by hand operation of a chain l passing over a wheel on one of the shafts. The drive may alternatively be by a worm wheel and shaft actuated by a servomotor. The lower ends of the The bands are cleaned by a liquid or gas supplied through perforated hollow shafts, e.g. the driving shafts, over which they pass, or they may be cleaned by liquid in the container m through which their lower ends pass.
Patent GB-841308-A (GB)
Title: Improvements in the production of polymers
Inventor: WOOD DENNIS GEOFFREY MURRAY
IPC: C08F20/14
Filed: 1957-08-07
Abstract: Process for polymerization of methyl methacrylate comprises bringing methyl methacrylate into contact with a compound of formula RMgBr in which R is an alkyl, alkenyl, cycloalkyl, aryl or aralkyl radical, the reaction mixture being such that the methacrylate and said compound form a system with two liquid phases, the process being characterised in that the reaction mixture contains water, preferably in excess of one mole of water per hundred moles of the magnesium compound.  The reaction medium may contain solvents, e.g. petrol ether and diethyl ether, and examples describe polymerisation in the presence of ethyl magnesium bromide, normal propyl magnesium bromide, normal butyl magnesium bromide, normal amyl magnesium bromide and phenyl magnesium bromide.  The products may be purified by treating with hydrochloric acid and methanol.  Specification 837,227 is referred to.
Patent GB-503833-A (GB)
Title: Improvements in or relating to telephony systems comprising thermionic valves
IPC: H04M3/40
Filed: 1937-09-13
Abstract: 503,833. Exchange systems. CHAPPLE, W. J. C. (Siemens & Halske Akt. Ges.) Sept. 13, 1937, No. 24900. [Class 40 (iv)] In a system in which each of a group of outlets includes an amplifier, the outlet next to be used is prepared by the closure of the heating circuit and is marked in the selector banks or indicated by lamps at manual positions. The outlets lead to junctions which may provide more than one channel. As shown, the heating circuits of the amplifiers V1-3 are associated with low resistance relays A1-3 and high resistance relays B1-3, which are controlled by the sleeve relays C1-3. In a manual system, lamps associated with the outlets are controlled by A1-3 and C1-3. In the initial state, the amplifier V1 is heated, since A1 (operating more quickly than A2, A3) short-circuits B1, and C1 is connected to the selector test banks. When the outlet is seized, 'the operation of C1 shortcircuits A1, B1 to maintain the heating circuit of V1 and by short-circuiting B2 completes the heating circuit of V2 in which A2 operates. In the same way the heating circuit of V3 is completed when the outlet corresponding to V2 is seized. In certain cases, the freeing of a busy outlet results in the substitution of the corresponding amplifiers for the one already prepared. For example if V1, V2 are in use and V3 prepared, the freeing of V2 results in that amplifier being prepared instead of V3, and the subsequent freeing of V1 restores the initial state with V1 prepared. If all are in use, the successive freeing of VI, V3 results in both these amplifiers being prepared.
Patent GB-206129-A (GB)
IPC: G01N3/36
Filed: 1923-10-06
Abstract: 206,129. Signal Ges. Oct. 28, 1922, [Convention date]. Testing physical qualities of materials.-In a testing-machine of the type in which the specimen is subjected repeatedly to tension and/or compression by being arranged in an oscillatory system which is caused to oscillate in its natural frequency, the rapid oscillations are produced by liquid or gaseous pressure. In the arrangement show-n in Fig. 1 the test piece 4 is attached at one end to a.n oscillating mass 3 that is connected by an elastic member 2 consisting of a stem 6 and a tube 7 to a heavy mass 1. The mass 3 is. caused to oscillate by fluid under pressure introduced by a pipe 11 and channel 12 to an annular nozzle 17 or to a ring of nozzles, whence it escapes by a gap 14 and causes the system to vibrate.' The fluid passes away through openings 15 in the diaphragm 8. A large mass 5 which provides an abutment for the test piece, is mounted on rollers 9 in order that it can move longitudinally to take up expansion of the test rod due to heating. In a modifica.- tion, the actuating fluid is introduced centrally instead of through an annular nozzle ring. Fig. 3 shows a further modification in which the oscillating mass 3 is carried by discs 8, 8' in a fixed ring 22. The fluid is introduced at 12 and escapes through the gap 14.
Patent GB-475920-A (GB)
Title: Improvements relating to "fronts" for personal wear
IPC: A41B1/22
Filed: 1936-09-14
Abstract: 475,920. Shirt fronts. SHANKS, E. Sept. 14, 1936, No. 24968. [Class 141] A detachable front or dickey 1 of relatively stiff material is provided with side flaps 2 of relatively soft material, the flaps being provided with a series of spaced loops 3 through which the wearer's braces 4 may be passed to hold the flaps against the braces. In a modification, the loops 3 are replaced by tabs each attached at one end to the respective flap by a releasable fastener. In a further modification, the loops are replaced by slits.