baber/WOPTO huggingface dataset:
Patent GB-548492-A (GB)
Title: Improvements relating to electromagnetic relays
IPC: H01H50/04
Filed: 1941-06-06
Abstract: 548,492. Electromagnetic relays. SIEMENS BROS. & CO., Ltd., and CHRISTIAN, D. A. June 6, 1941, No. 7196. [Class 38 (v)] The magnet, armature and contacts of a relay are mounted within the confines of a one-piece moulded or die-cast framework which permits ready access to all the components. In the form shown, the frame, which is of plastic insulating material, has the shape of a parallelopiped with an aperture 2 for containing the magnet 8 and armature 10, a channel along the top for containing one or, more cantilever contact springs 9 and their adjustment screws 11 and an aperture 4 at the end through which the fixed contacts 14 pass. Each screw 11 is adapted to press the contact spring 9 so that the armature rests and pivots about the left-hand pole-piece of the magnet. The fixed contacts 14 are adjustable by screws 19 each of which has two threads of different pitch engaging a fixed lug 7 and the slidable contact. In a modification, the fixed contacts are mounted on plates adjustable about a pivot.
Patent GB-844945-A (GB)
Title: Improvements in television receiver circuits
IPC: H04N5/213
Filed: 1957-03-05
Abstract: 844,945. Television. PHILIPS ELECTRICAL INDUSTRIES Ltd. March 5, 1957 [March 6, 1956], No. 7278/57. Class 40(3). Relates to an arrangement for separating synchronizing pulses 3b from the video component 3a of a television signal 3 of the type in which the signal is applied to the grid of an amplifying stage 1, Fig. 9, through a capacitor 4 which charges by grid current at the peaks of the synchronizing pulses and locates the signal with the video component beyond the cut-off point 6 of the anode characteristic as illustrated in Fig. 2. In accordance with the invention the normal leak resistor 2 is shunted by a lower value resistor 15 which is switched into circuit in response to synchronizing and/or similarly poled interfering pulses appearing at the output of the separator. The discharge path of capacitor 2 thus has a high value (2 M# in a typical example) between pulses and assumes a lower value, e.g. 200 K#, in response to pulses. The switching is effected by means of a diode 16, the output pulses 7a from the separator I being reversed in phase in a stage 19 and rectified in circuit 17, 18, 20, so as to produce a bias negative with respect to earth which normally holds diode 16 cut-off but which is overcome during each pulse. The effect of the invention is firstly to reduce the influence of interference superimposed on the synchronizing pulses, and secondly to prevent large amplitude interfering pulses which appear between synchronizing pulses from biasing the separator inoperative by end cut-off so that the synchronizing output is lost until capacitor 4 discharges back to the normal level. The loss of output under such circumstances allows the bias due to circuit 17, 18 and 20 to disappear so that diode 16 conducts and brings in resistor 15 to discharge capacitor 4 rapidly. The time constant 17, 20 if selected so that synchronism is restored within a period of one line. A modified circuit, Fig. 10, (not shown), includes a low-pass filter between circuit 17, 18, 20 and diode 16 so that the diode is not rendered conducting in response to each synchronizing pulse but responds only to the loss of bias consequent upon a suppression of output by an interfering pulse. According to a further modification (not described in detail) resistor 15 and diode 16 may be replaced by the cathode grid space of a vacuum tube which includes a second grid to which the control bias from circuit 17, 18, 20 is applied. Reference is also made to the use of transistors in place of stages 1 and 19 and crystal diodes in place of diodes 16 and 18.
Patent GB-1033581-A (GB)
Title: Decking for bridges and the like
IPC: E01C5/16
Filed: 1965-02-19
Abstract: 1,033,581. Composite metal sheet. BETEILIGUNGS-UND PATENTVERWALTUNGS G.m.b.H. Feb. 19, 1965 [Feb. 20, 1964], No. 7297/65. Heading E1K. A composite metal sheet more particularly for bridge &c. decks comprises a flat sheet 1 having hollow ribs 12 of trapezoidal crosssection containing a bracing corrugated plate 6. The ribs may be formed of separate sheets or a single zigzag sheet. A second flat sheet 2 may be welded to the opposite sides of the ribs or each rib may be formed of two sheets welded to the plate 1 and to a plate welded to the bottom of the corrugated plate.
Patent GB-557092-A (GB)
Title: Improvements in stirring apparatus
IPC: D21B1/34
Filed: 1942-06-01
Abstract: 557,092. Mixing &c. apparatus. CLYDE PAPER CO., Ltd., and INGLIS, J. June 1, 1942, No. 7379. [Class 86] In a mixing apparatus for paper stock &c. a stirrer 12 is secured to the lower end of a rotary shaft 13 which is supported in bearings 14, 15 and is surrounded by a structure 16, which, with the lower bearing 15, forms a closed casing into which the fluid 11 in the mixing vessel 10 cannot gain access to foul the lower bearing. Water or other liquid for cooling or lubricating purposes can enter the structure through a valved pipe 20, and can overflow through an outlet 22. In a modification, the shaft 13 is enclosed in a tube jointed to the upper and lower bearings to provide a narrow annular water space surrounding the shaft. In another modification, for high speed mixers, in which the matter in the mixing vessel forms itself into a vortex, the stirrer shaft has one stirrer at its lower end and a second spaced from that end so that the lower bearing, which is just above it, will, in the operation of the apparatus, be locked in the vortex cavity.
Patent GB-267960-A (GB)
Title: Device for the increased utilization of the waste gas heat of steam boilers or otherheat exchangers emitting waste gases
IPC: F22D1/02
Filed: 1927-03-17
Abstract: 267,960. Hartmann, P. E., (Assignee of Hartmann, M. & E.). March 17, 1926, [Convention date]. Air, supplying; forced draught systems.-In a steam boiler or other furnace fitted with an economizer a and an air heater b, the latter is arranged above the economizer which is made of less width than the boiler g to provide side spaces to accommodate the hot air delivery pipes d, Fig. 1, or the cold air supply pipes c, Fig. 4. The pipes d discharge into a horizontal channel e from which conduits lead to the firebox. The Specification as open to inspection under Sect. 91 (3) (a) comprises also a construction in which a number of boilers are arranged side by side, the channel e being extended so that hot air may be supplied to the firebox of a boiler which itself has no air heater. This subject-matter does not appear in the Specification as accepted.
Patent GB-548404-A (GB)
Title: An improved hardness testing instrument
IPC: G01N3/42
Filed: 1941-06-13
Abstract: 548,404. Hardness testing. FAIREY AVIATION CO., Ltd., and WOODSMITH, H. T. June 13, 1941, No. 7506. [Class 106 (ii)] A hardness testing instrument comprises a pair of oppositely situated fixed jaws carried by a handle, one jaw 21 constituting an anvil and the other having in threaded engagement therewith pressure means for forcing towards the anvil a steel ball w supported loosely in a cage v or the like, said cage being so mounted that a standard test piece 23 of known hardness may be located between the ball and the pressure means. The device is portable and carries a number of standard test pieces in the handle a. In use, the part f is screwed outwards until the part to be tested 22 and the standard piece 23 can be inserted as shown. The screw o is then turned by the tommy bar r to bring an equal force on the pressure block n, the standard piece 23, the ball w, specimen 22 and the anvil. The impressions produced in parts 22 and 23 enable their relative hardnesses to be determined. Relative rotation of the pressure block n, the sleeve h and the threaded jaw d of the device is prevented by key-and-slot means, to prevent grinding action between the ball and the pieces 22, 23. In the modification shown in Fig. 10, the cage v is replaced by a block 30 carrying two balls 32 held in position by an apertured spring clip 34. Tongues 31 on the block engage in grooves in the lugs s of the sleeve h so as to allow vertical movement but prevent rotation. The lugs s are continued downwards so as to clamp the specimen 22 against the anvil. The balls may be replaced by screwed holders with pyramidal or conical diamond indenters.
Patent GB-279702-A (GB)
Title: Radio receiver attachment for telephones
IPC: H04M1/21
Filed: 1927-03-18
Abstract: 279,702. Mitchell, G. F. March 18, 1927. Receiving-sets, construction of; aerials. - A wireless receiving attachment for house or line telephones comprises a wireless receiver 7 adapted to be fixed to the casing of the telephone or upon the telephone support, and is provided with means for electrically connecting the input of the wireless receiver to the telephone casing. Fig. 7 shows a contact strip 12 establishing connection to the stand 1 and the inherent capacity 33. Fig. 14, between the stand and the leads results in the wireless receiver being virtually connected to the telephone line. A latch 20 overlies the hook 2 so that the telephone receiver may be used for wireless reception, connection to the wireless receiver being made by pin connection as shown or by means of terminals brought out to plug and socket connections. A number of modifications are described for attaching the wireless receiver to various types of telephone sets, and the radio receiver may comprise a crystal or valve detector and low frequency amplification may be employed.
Patent GB-1365371-A (GB)
Title: Direction indicator switches for road vehicles
IPC: B60Q1/42
Filed: 1971-03-20
Abstract: 1365371 Direction indicator switches for road vehicles JOSEPH LUCAS (INDUSTRIES) Ltd 17 Feb 1972 [20 March 1971] 7540/71 Heading G4Q A cancelling device for a vehicle direction indicator switch comprises a rotor 112 which can be moved by switch lever 116 about a pivot 114 into two operative and one inoperative position, two pawls 122 mounted on the rotor and so arranged that when the rotor is in an operative position, one of the pawls is so placed as to be contacted by a striker on the steering column, each pawl having a slot within which is engaged a post 119 connected to the rotor; a spring 124 urges one end of each slot into engagement with the corresponding post, the arrangement being such that when the steering column is moved in one direction, the pawl pivots about its post and returns to its position, whereas movement of the steering column in the other direction causes the rotor to be returned to its inoperative position; however if the lever 116 is held in operative position, the end of the slot moves away from its post and allows the striker to pass the pawl. A ball is located in each pawl slot and in the arrangements described, the ball is movable in a groove fixed relative to the rotor, pivotal movement of each pawl in one direction being prevented by abutment of the ball against the end of the groove.
Patent GB-843636-A (GB)
Title: Method and apparatus for improving performance of a fast reactor
IPC: G21C7/30
Filed: 1957-03-07
Abstract: 843,636. Nuclear reactors. UNITED STATES ATOMIC ENERGY COMMISSION. March 7, 1957 [July 31, 1956], No. 7557/57. Class 39(4). In a fast breeder reactor, a fertile mass is surrounded by an annular fissile mass to form a core, in turn surrounded by fertile material distributed in two annular concentric zones. The control rods are positioned round the outer perimeter of the fissile mass. The fertile and fissile materials are contained in vertical tubes and mounted within a vertical cylindrical shield, the whole being immersed in liquid coolant. In one embodiment, the latter is circulated vertically upwards through the reactor core and downwards through the outer fertile mass, which in a modification, separate systems circulate coolant vertically upwards through both the core and the outer mass. Both neutron flux and power generation are reduced at the centre of the reactor by the fertile core. The reactor, with the coolant pump and heat exchanger is immersed in the primary coolant, liquid sodium. As shown, Fig. 2, the active zone 51 includes a centre core 52 and radial, upper and lower sections 53, 54, 55. The core 52 comprises the inner fertile mass surrounded by fissile material and the sections 53, 54, 55 contain the outer fertile material. The shield and reflector 56, 57 surround 51. The coolant passes into manifold 110, through fuel rods 60, upwards into chamber 111, downwards through the fertile material rods 61 into chamber 112 and out through pipe 113. The fuel rod 60, Figs. 6, 7, 8 consists of a centre fissile region 62, and upper and lower fertile regions 63, 64. The fissile material is formed of fuel elements 65 and the fertile material consists of prisms 77, of triangular cross-section. The rod is manipulated by hanger 67 and the coolant flows upwards through orifice 69a, through channels 79, between the elements 65 and out by orifice 72a. The sheath of each element 65 carries an external spiral rib. The outer fertile material is contained in cylinders mounted within rods shaped identically to 60. The materials used are fissionable material, U-235, Pu-239, U-233, Np-237, in a diluent, lithium, thorium or zirconium ; fertile material, U-238 or Th-232, Co-60 ; fuel sheath, stainless steel ; fertile material sheath, zirconium, stainless steel, nickel, titanium, aluminium ; reflector, graphite ; shield, concrete ; coolant, sodium. Specification 817,751 is referred to.
Patent GB-577089-A (GB)
Title: Improvements relating to fluorescent materials
IPC: C09K11/08
Filed: 1944-04-24
Abstract: 577,089. Luminescent materials. SIEMENS ELECTRIC LAMPS & SUPPLIES, Ltd., and AUSTIN, H. April 24, 1944, No. 7582. [Class 39 (i)] Luminescent material is made by mixing finely divided cadmium phosphate, cadmium chloride, and the phosphate of an activating metal and subjecting them to a heat treatment, the proportions by weight of the cadmium chloride and the cadmium phosphate in the mixture being not less than thirty parts of the former to one hundred parts of the latter. The activating metal may be manganese or antimony or both and the proportion of the activating phosphate is of the order of 5 per cent by weight of the content of cadmium phosphate. The luminescent material may be mixed with magnesium tungstate prepared as described in Specification 563,185. Cadmium borate and zinc beryllium silicate may also be added.
Patent GB-670238-A (GB)
Title: Improvements in or relating to automatic frequency control circuit arrangements
Inventor: RATCLIFFE STANLEY
IPC: H03L7/04
Filed: 1948-03-13
Abstract: 670,238. Automatic frequency control systems. MINISTER OF SUPPLY. April 11, 1949 [March 13, 1948], No. 7698/48. Class 38 (iv). The frequency of an oscillator is automatically controlled by a voltage applied to the frequency controlling electrode of the oscillator valve and by an adjustment of the dimensions of a resonant cavity, the arrangement being such that the power in the output of the valve is maintained at the optimum or a desired level. As shown, the frequency of klystron 2 is controlled by a voltage developed in example in response to the output from the discriminator 5 and applied to the reflector electrode, and by adjustment of the dimensions of the rhumbatron by motor 8 under the control of the circuit chain 11-16 which is responsive to the output of the mixer 3 and hence the power in the output of the klystron. The direction of rotation of the cavity controlling motor 8 is determined by the output of mixer 3. When the frequency is outside a predetermined range, the discriminator 5 provides no output and the motor 8 is connected to the search circuit 9 until when tuning falls within the range, discriminator 5 operates switch 17 to connect 8 to a stepper circuit 10 after which tuning to the desired frequency within the range is effected in steps, provision being made to reverse stepping under the control of a relay 16 and multivibrators 12, 15 after passing through the point of optimum power. In a further embodiment, as applied to a superheterodyne receiver the intermediate frequency signals derived from a mixer are applied to a discriminator circuit, the output of which is applied, through an integrating circuit to the grid of a further valve which energizes the klystron reflector electrode. In addition, the output of the mixer which is also representative of the power in the klystron, after comparison with a datum current is applied simultaneously to both the control grid of the klystron, the power output of which is regulated, and to a trigger circuit which controls the direction of rotation of the motor which adjusts the klystron resonant cavity.
Patent GB-1529384-A (GB)
Title: Oxidation of propylene and isobutylene
IPC: C07C57/055
Filed: 1976-02-27
Abstract: In the oxidation of propylene or isobutylene, with molecular oxygen in a tube-shaped fixed-bed reactor with the formation of a mixture of acrolein and acrylic acid, or methacrolein and methacrylic acid, respectively, the reaction temperature can be controlled in an excellent manner when an oxidation catalyst system is used in which the catalysts have two forms which differ physically. The catalyst which is the first to be brought into contact with the reactants is composed of an essentially inert carrier material with a coating of catalytic material. The second catalyst, which is then brought into contact with the reactants, is essentially composed of catalytic material only. The good temperature control allows the conversion rate to be increased substantially.
Patent GB-270057-A (GB)
Title: Improvements in lifting jacks
IPC: B66F3/14
Filed: 1926-03-22
Abstract: 270,057. Tangyes, Ltd., Chapman, H. W., and Hodgkinson, D. M. March 22,1926. Jacks. - Screw jacks of the extended lift type and provided with means for preventing the inner screw from rotating comprising a square or eccentrically mounted rod slidably mounted within the screw and connected at its lower end to a crossbar guided non-rotatably in grooves in the casing, have the cross - bar directlv supported by the outer screw. The inner screw E is prevented from rotating by a cylindrical rod G slidablv mounted in an eccentrically placed bore F in the screw and fixed at its lower end to a cross-bar H which engages with the grooved lower end L of the outer screw C and also with vertical guide channels K in the casing A. When a rod having a square cross-section is used it is concentrically arranged in the inner screw. According to the Provisional Specification the invention may be applied to single screw jacks. Specification 270,056 is referred to.
Patent GB-458493-A (GB)
Title: Improvements in or relating to vehicle hubs with inner brake
IPC: B62L5/00
Filed: 1935-03-13
Abstract: 458,493. Coaster &c. hubs. ZUCKER, P., 11, Lavaterstrasse, Zurich, Switzerland. March 13, 1935, No. 7850. Void [Abridged as open to inspection under Sect. 91 of the Acts, Sept. 14, 1935]. [Class 136 (ii)] [See also Group XXXIV] An internal hub brake for bicycles comprises a helical spring band 9 which for braking is adapted to be unwound and expanded against the interior of the hub. A helical spring 10 is simultaneously expanded and is adapted to press against the interior of the band 9 and prevent deformation. The springs 9, 10 are fixed at one end in a fixed bearing cone 2 and at the other end in a bearing cone 4 adapted to be turned on the axle 1 by a lever 5 to produce braking. A helical cooling fin 13 is provided. In a modification, the helical springs are arranged in a drum forming part of the hub and operated by a lever journalled in the cover plate of the drum and acting on a lever pivoted about the axis of the hub and engaging one end of the springs. In a modification of this latter form, the brake is operated by a coupling member adapted to move on a screw on the axle in such a manner that on forward pedalling the drive is engaged and on back-pedalling the brake is applied.
Patent GB-634045-A (GB)
Title: Improvements in or relating to spinnerettes and alloys therefor
IPC: C22C5/00
Filed: 1948-03-16
Abstract: Spinnerette jets are made from an alloy of the following composition:-Au 4-15 per cent, Rh 5-15 per cent, Pt the balance, the proportions being so selected that for Au contents less than 5 per cent the minimum Rh content is increased above 5 per cent by five times the amount by which the Au content is below 5 per cent. The Pt content may be replaced up to 20 per cent by Pd on an atom for atom basis.  A spinnerette jet is formed from a sheet of the alloy which has been heated for approximately 15 minutes at 1050-1100 DEG C and quenched in cold water.  The jet is then hardened by heating at 620-650 DEG C for 1-2 hours.  Specification 563,648 is referred to.
Patent GB-1173021-A (GB)
Title: Improvements in the Cooking of Foodstuffs
Inventor: COX JOHN ALFRED
IPC: A23L5/10
Filed: 1966-02-23
Abstract: 1,173,021. Cooking apparatus. SCOT MEAT PRODUCTS Ltd. 23 May, 1967 [23 Feb., 1966], No. 8053/66. Heading A2A. A method of moist air cooking comprises causing a body of air maintained at a predetermined temperature and humidity to recirculate through a chamber containing food to be cooked and to impinge upon the food in a substantially horizontally directed streamline flow. A suitable cooking apparatus comprises two positive displacement fans 14 for circulating air through a cooking chamber 31, a plenum chamber 32 separated by a perforated wall 33 from the cooking chamber 31, heating means 16 for heating the circulating air and means 17 supplying water in atomised form to the circulating air. The air from the outlets 18 of fans 14 driven by an electric motor, is passed to the plenum chamber 32 from where it is directed in a substantially horizontal streamline flow to impinge on the food in chamber 31, and it is then passed to the intake 19 of the fans 14, via heating means 16 and water spraying means 17. The heating means 16 may comprise a battery of closely spaced square finned tubes through which steam flows, the flow of steam being regulated by valve 26 which is controlled by means 22 which sense the temperature of the air stream leaving chamber 31. The means 17 carries a number of spray nozzles and the spray therefrom is regulated by valve 38 to maintain a predetermined relative humidity within the chamber 31. The door 11, walls 7, top 8 and bottom 6 form a heat insulated outer casing. The casing is provided with means to allow condensed water to drain therefrom. To achieve an airtight seal around the door 11, the sealing gaskets are located in slots 82 in the door side edges 80 of rounded section and present rounded faces to the frame of the door. A unit may comprise more than one cooking apparatus arranged side by side in a framework.
Patent GB-476784-A (GB)
Title: Improvements in the construction of chairs
IPC: A47C1/026
Filed: 1937-03-19
Abstract: 476,784. Seats. FRAENCKEL, G. J. March 19, 1937, No. 8133. [Class 52 (ii)] A chair in which the seat is adjustable to two different heights comprises a seat 10, back 15 and arms 16 forming a unit and connected by a hinge 20 to a cross-bar 8 of a frame 1 which can be turned so that either the side 4 or the side 3 rests on the floor. The seat is secured in either of the two positions by means of bolts 21 which engage in selected holes of one or other of two sets of holes 22, 23 on the frame, so providing a limited amount of angular adjustment. The cross member 19, to which the hinges 20 are secured may be slidably mounted in the seat frame.