baber/WOPTO huggingface dataset:
Patent GB-588817-A (GB)
Title: Improvements relating to ultra short wave oscillators
IPC: H03B5/18
Filed: 1943-11-19
Abstract: 588,817. Valve generating circuits. STANDARD TELEPHONES & CABLES. Ltd., and FREMLIN, J. H. Nov. 19, 1943, No. 19416. [Class 40 (v)] In an electron discharge generating device of the velocity modulation type in which a beam of electrons is directed from a cathode to excite a resonator, variation in the supply voltage is compensated by varying the beam. current so that the potential of the resonator relative to the cathode remains constant. The Figure shows the application to a coaxial line resonator 2 excited by a beam derived from a cathode 4, and fired through a control grid 3 and a slot defined by fins on to a collecting anode 1. According to the invention, a resistance R1 is interposed in the connection to the anode 1 and resonator 2, and the grid 3 is connected through a counteracting bias source 6 to adjustable tapping on a resistance R2 connected across the source 9, 10. In this way, a voltage dependent on the source is applied to the grid to so control the beam current that the potential of the resonator remains constant despite changes in the supply voltage in consequence of the counteracting voltages produced in the resistance R1. The conditions to ensure this are that mV - v + bE = m.n.I R1 where (V) is the voltage, (I) the beam current, (m.) the proportion of voltage applied to the control grid, (v) the counteracting voltage and b and n are constants determined by the geometrical design of the device, and E the potential of the resonating system. To avoid large dissipation of power in the resistance R1, this resistance may be replaced by the anode circuit impedance of a pentode valve, or other like differential impedance not requiring such a large total voltage. One or more gas discharge tubes 7 may be connected in parallel with the upper part of the resistance R2 so that the whole of the variation of V and not only the fraction m thereof appears across the lower part. In this way, the resistance R1 is lowered and the condition becomes mV - v+bE = n.I.R1. Specifications 537,490 and 587,619. are referred to.
Patent GB-498883-A (GB)
Title: Improvements in or relating to electron discharge tubes
IPC: H03F1/16
Filed: 1937-07-13
Abstract: 498,883. Magnetrons. TELEFUNKEN GES. FUR DRAHTLOSE TELEGRAPHIE. July 13, 1937, No. 19426. Convention date, July 13, 1936. Addition to 483,336. [Class 39 (i)] In a magnetron having the cathode K surrounded by inner and outer systems J1, J2 of electrodes, in order that the inner may be more easily used as a control system and to prevent self-oscillation of either system the outer electrodes or plates insulated from these electrodes carry projections R which project towards the inner systems. Alternatively, only one pair of projections may be used in a magnetron. Some may enter between the gaps in the inner system, while others are at the ends of those electrodes on which electrons impinge. The projections are carried by the outer system of perforated electrodes where an outer collecting electrode is used. The Specification as open to inspection under Sect. 91 also describes magnetrons wherein the outer electrodes also form the intercepting projections. These may be cooled by passing water through them. This subjectmatter does not appear in the Specification as accepted.
Patent GB-1380775-A (GB)
Title: Telecommunications cable
IPC: H01B11/02
Filed: 1972-04-26
Abstract: 1380775 Telecommunications cable KABELWEEK OBERSPREE VEB 26 April 1972 19432/72 Heading H1A The pairs or quads 1 of a telecommunication cable are laid up mutually parallel, without being stranded, within a binder 2 over which a synthetic plastics sheath 3 may be extruded. Alternatively, pairs or quads are stranded into groups which are laid up without stranding. Adjacent groups have conductors stranded with lays of different pitch.
Patent GB-423710-A (GB)
Title: A device for use in cleaning a tobacco-pipe
IPC: A24F9/08
Filed: 1934-07-02
Abstract: 423,710. Tobacco - pipe cleaners. MENDELSOHN, C., Mortimer Court, Abbey Road, St. John's Wood, London. July 2, 1934, No. 19434. [Class 130] A device for pulling a straight cotton-covered wire pipe-cleaner through the stem of a pipe consists of a strip of metal or other rigid material, a notch A being cut in the edge of the strip for engagement with the wire cleaner, which is wedged in the notch by a slight turn of the strip. The other end of the strip may be shaped similarly to the profile of a pipe bowl or may have a hole for threading on a key ring ; or it may be formed as a pick or with a knife-edge for pipe cleaning.
Patent GB-985814-A (GB)
Title: Dust filters
IPC: B01D46/02
Filed: 1961-05-30
Abstract: 985,814. Filters for gases. MEREWIDO N.V. May 30, 1961 [May 30, 1960], No. 19530/61. Heading BIT. A dust filter comprises a casing having a cylindrical centre-part 1, a cover 2 and a conical bottom 3, the centre part 1 having a tangential connection 4 for the admission of gas in which the dust is entrained and the cover 2 having a connection 5 for removal of clean gas, a filter cloth 35 is disposed in the centre part 1 and, being originally shaped as a truncated cone, runs zig-zag-wise over rings 20, 16, 22, 18 and 24 which are carried on rods connected to star-shaped members 9 and 14 supported in the centre part 1 of the casing, the members 9 and 14 being interconnected to constitute a subassembly which can be positioned in and removed from the centre part 1 of the casing. A tubular hub 15 on the member 14 has passing therethrough a rod 10 carried on the member 9, the members 9 and 14 being releasably secured together by a nut 12 on the rod 10. The outer edge of the filter cloth is clamped in position by the lid 2 bearing on the member 14 and the inner edge is adjustably clamped to the hub 15 by a ring 27. The filter cloth may be cleaned by vibrations transmitted through the casing or by the gas having pulsations set up in it; the dust thus loosened from the filter cloth falls into the conical bottom 3 and is removed through an orifice 7 in the latter.
Patent GB-1023099-A (GB)
Title: Power operated spanner
IPC: B25B21/00
Filed: 1964-05-11
Abstract: 1,023,099. Power-driven spanners. DESOUTTER BROTHERS Ltd. Feb. 11, 1965 [May 11, 1964], No. 19567/64. Heading B3N. A power-operated spanner comprises a reversible pneumatic motor 1 which drives an output shaft 5 through a double reduction gear 3, 4 and a one-way toothed clutch 6. A box spanner portion 28 is driven by shaft 5 through bevel gears 25, 26, spur gears 27-31 and a slot 32 in the spanner portion is positioned to coincide with a slot 33 by a pawl 34 which cooperates with a ratchet wheel 33. Air is supplied to motor 1 via a valve 12 actuated by a lever 13, and a reversing valve 16 actuated by a knob 17. A screwed and milled ring 36 is provided so that noses of different proportions can be substituted.
Patent GB-437101-A (GB)
Title: Improvements in or relating to winding devices for strip-like rolled material
IPC: B21C47/06
Filed: 1935-07-09
Abstract: 437,101. Winding webs. KRUPP GRUSONWERK AKT.-GES., F., Buckau, Magdeburg, Germany. July 9, 1935, No. 19616. Convention date, Aug. 24, 1934. [Class 100 (i)] [See also Group XXII] In winding-drums for rolled strip material, rollers and curved guides are arranged in a circle about the winding drum. The curved guides 4 are connected to the levers 5 carrying the guide rollers 3 by pin and slot connections 7. When the diameter of the rolled material is increased the guides are correspondingly moved. Friction rollers 11 are mounted coaxially of each of the rollers 3, 3<1> and are driven by a friction ring on the shaft 1. A roller 9, arranged to bend the strip on to the drum, is mounted on a spring-pressed pivoted carrier 16 articulated to the guide 4<1>. The drum, is made collapsable for freeing the material after coiling. The friction ring and rollers 11 are conical to allow of axial movement of the shaft 10 and to maintain the drive and allow the rollers 3, 3<1> to be displaced to receive the strip.
Patent GB-258985-A (GB)
Title: Improvements in engine starters
IPC: F02N99/00
Filed: 1925-08-04
Abstract: 258,985. Rogers, F. H., (Eclipse Machine Co.). Aug. 4, 1925. Turning-gear.-A starter for aeroplane or other engines comprises a shaft 18 arranged to be operated manually at either end and connected through a transmission device to a driving member 11 adapted on rotation of the shaft 18 to advance into engagement with and to crank an engine member 12. The shaft 18 may extend through opposite sides of the aeroplane fuselage. As shown in Fig. 1, the shaft 18, which can be engaged at either end by a starting-handle, carries a worm 19 in mesh with a worm wheel 15 on a barrel 3 connected by a multiple-plate clutch 5 to a shell 4, which is threaded internally at 10 to engage threads 9 on the driving member 11. The plates of the clutch 5 are under the pressure of springs 6 engaged by an adjustable nut 7 on the shell 4. Rotation of the shaft 18 and members 15, 3, 4 causes axial movement and then rotation of the member 11. which is splined to engage internal splines in the engine shaft 12. The barrel 3 rotates in a bushing 2 in a fixed casing 1. In a modification, Fig. 4, an electric motor 24, detachably mounted on the face 33 of the casing 1 and held by a strap 39, is arranged to drive the shaft 27 through a pinion 25 and a wheel 26 having a slotted bore 31 to engage a transverse pin 30 in the shaft 27. An additional pin 22 may be provided for engagement by a starting-handle, or a sleeve arranged for engagement by a starting- handle may be pinned to the hub of the wheel 26. In a further form, an ignition magneto is similarly mounted on the face 33 of the casing and driven from the shaft 27 through reduction gearing.
Patent GB-214148-A (GB)
Title: Improvements in and connected with steam generators
IPC: F22B37/22
Filed: 1923-08-01
Abstract: 214,148. Stirling Boiler Co., Ltd., and Mackay, H. J. S. Aug. 1, 1923. Water-tube boilers; priming, preventing.-In a Stirling type or other vertical water-tube boiler, to prevent water from passing over with the steam when the water-level rises in the drum C from which steam is taken, this drum is connected at a point well above the normal water-level with another upper drum B at a point below the water level by one or more S-shaped tubes F. The tubes lead water rising above the normal water level back below the normal water-level. A plate G fitted in the drum C immediately above the S-shaped tubes prevents water from passing into the steam circulating tubes D.
Patent GB-267875-A (GB)
Title: Improvements in or relating to paper making machines
IPC: D21F7/04
Filed: 1926-08-10
Abstract: 267,875. Peschl, F. A. March 22, 1926, [Convention date]. Fourdrinier paper machines; alarm apparatus. -To prevent the piling up of " broke " paper in the wet presses, driers, &c. of a paper machine, resulting from a break in the web during its passage through the machine, a web-rupturing device is provided at a convenient place in the machine, such device being operated electrically by contactors situated in different parts of the machine. In the apparatus shown, the web-rupturing device consists of a blast delivery nozzle 15, Fig. 1, supplied by a pipe 16 having a valve 18 which is opened by means of a solenoid and core 19 on the completion of the circuit through one or other of the contactors. The contactors 24 in the wet presses comprise levers 27, Fig. 4, pivoted at 28 and resting on the paper web. The breakage of the paper allows the levers to fall and complete the earthed circuit by connecting conductors 31 with contact plates 29. The contactors 25, 26, Fig. 2, in the drier section of the machine consist of a number of metal contactor rods 33, Fig. 5, suspended loosely from a ring and riding on the paper web. The failure of the web allows the rods 33 to make contact with a drying cylinder and so complete the circuit. The current used may be direct or alternating, and, as shown, alternating current is used from a power supply furnished with a transformer 39<a>. The circuit between the solenoid coil 19 and the transformer 39a comprises conductors 46, 45, 44, 42, 47 and contact points 40, 41, the latter being connectable by a switch 51 operated by a relay 49 which is in the circuit 23 of the contactors 24, 25, 26. During normal working of the paper machine, the solenoid 73 of the relay 49 is de-energized, the points 63. 64 are connected by a switch arm 71, and the solenoid 56 energized, maintaining the switch arms 52, 53, 54 in contact and the switch arm 51 out of contact. The earthing of the circuit by either of the contactors 24, 25, 26 momentarily energizes the solenoid 73, breaks contacts 63, 64 and so de-energizes the solenoid 56. The rod 50 then falls, breaking contacts 61 and 61<a>, 59, and 60, 57 and 58, and by means of the switch arm 51 makes the contact of 40 and 41, thus completing the circuit of the solenoid 19 which opens the valve 18 of the nozzle 15. The breaking of the contacts 57 and 58 de-energizes the solenoid 73, its core drops, and the contact 63, 64 is remade. A resetting switch 79, manually operated, re-makes the circuit through the solenoid 56 and raises the rod 50 into its normal position. Electric lights or bells may be arranged in the circuit to indicate to the workmen the parting of the web, or a whistle or siren 87 may be applied to the air blast.
Patent GB-905992-A (GB)
Title: Improvements in and relating to electrical spring contact sockets
Inventor: DAVIES GEOFFREY
IPC: H01R12/72
Filed: 1960-06-03
Abstract: 905,992. Two-part couplings. STANDARD TELEPHONES & CABLES Ltd. June 3, 1960, No. 19711/60. Class 38 (1). A resilient socket contact 1 has a cam surface 3 which engages a printed circuit board 4 and prevents engagement between the contact portion 2 of the socket and a copper contact strip 5 on the board until the cam lodges in a hole 6 in the fully inserted board. The engagement of the cam 3 in the hole 6 also serves to hold the board in position. Several sockets, Fig. 3, may be mounted in an insulating block 7 by twisting their soldering tags 9. The contacts may be symmetrical as in Fig. 1 or may each be a single spring-urged contact jaw 10 arranged in and co-operating with an insulating block 11.
Patent GB-828175-A (GB)
Title: Observation mirrors for vehicles
IPC: B60R1/06
Filed: 1957-06-24
Abstract: 828,175. Vehicle mirrors. SMALLBONE, H. P. May 6, 1958 [June 24, 1957], No. 19770/57. Class 103(2) A rear-view mirror d, Fig. 1, attached by a base a and arm b to the exterior of a vehicle, is mounted in a holder e which also carries wind-driven vanes h whereby the mirror is rotated about a central spindle f secured to the arm b to fling off rain or snow by centrifugal force. An annular housing k connected to the arm surrounds the vanes to concentrate the air stream on the vanes. In another embodiment, a spring-urged wiper block m, Fig. 3. is movable to and from an operative position against the mirror d by a spindle n in the housing k. The spindle f has limited axial freedom relatively to the arm b and is spring-loaded at r so that the air pressure acting on the vanes h, when they rotate, advances the mirror sufficiently for the wiper blade to act thereon.
Patent GB-1301714-A (GB)
IPC: H01J29/45
Filed: 1970-04-24
Abstract: 1301714 Image pick-up tubes; semi-conductor devices RCA CORPORATION 24 April 1970 [29 April 1969] 19788/70 Headings H1D and H1K A charge storage target comprising a semiconductor wafer 24, Fig. 2, is provided on one surface with a layer 36 of transparent material containing a high concentration of non-mobile charges of polarity opposite to the conductivity type of the wafer. In a vidicon tube such non- mobile charges tend to reduce recombination of carriers generated near the surface by short wavelength blue light, and thereby equalize the sensitivity of the target to light of different wavelengths. The wafer 24 may be of N-type silicon and the layer 36 of silicon dioxide providing a charge layer 38 of positive silicon ions of between 3 Î 10<SP>11</SP> and 5 Î 10<SP>12</SP> charges/cm.<SP>2</SP>; alternative materials are silicon nitride or aluminium oxide. If the wafer is P-type the charges should be negative and may be incorporated in a layer of aluminium oxide. In the example shown the opposite face of the wafer includes an array of diodes provided with contact pads 30 of P-type silicon which overlap the insulating layer 32 of silicon oxide protecting the wafer. Electrode processing.-An N-type single crystal silicon wafer of 160 #-cm. resistivity with 3 Î 10<SP>13</SP> N-type impurity atoms/cm.<SP>2</SP> and major surfaces in the <111> plane is covered on the surface with 1 micron layer 32 of silicon dioxide having an array of openings in which are formed pads 34 of silicon containing boron. The wafer is reduced in thickness to 125 microns at the periphery and 15 microns in a round central region. The wafer is backed in oxygen at 1200‹ C. for 5 minutes, and then hydrogen chloride is admitted to produce an atmosphere of 99% O 2  and 1% HCl in which the wafer is baked for a further 10 minutes. After cooling to 700‹ C. the atmosphere is changed to pure oxygen again and the wafer is removed to normal atmosphere at room temperature. Finally the wafer is heated in hydrogen at 500‹ C. for ¢ hour and any silicon dioxide formed on the pads 34 is removed by etching with hydrofluoric acid, and the transparent layer 36 is reduced to a thickness of 0À08 micron also by etching with hydrofluoric acid to give it anti-reflection properties for visible light. During the heating at 1200‹ C. boron ions in the pads 34 diffuse into the bulk 24 to a depth of 3 microns, and the layer 36 with its charge concentration is formed. Alternative ways of incorporating the charge are chemical processing and bombardment with high velocity charged particles.
Patent GB-968549-A (GB)
Title: Controlling or detecting apparatus
Inventor: HARRISON JAMES ARTHUR
IPC: B30B15/14
Filed: 1961-06-02
Abstract: 968,549. Power presses. DAVY & UNITED ENGINEERING CO. Ltd. May 31, 1962 [June 2, 1961], No. 19963/61. Heading B3H. [Also in Division G4] Apparatus for controlling a moving member, e.g. for stopping a ram on a forging press, measures the position of two points on the member and calculates the mean of the two points. In the forging press control circuit shown bidirection counters 22A, 22B operated by pulses from transducers 16, 17 indicate vertical movements of the ends of the crosshead A, B. When the counter 22A reaches a value, determined by a selector 25, corresponding to a fixed position reached by the lower end A of a tilted crosshead a gate 29A is opened and a counter 23A measures further downward movements of the end A. When it reaches a pre-set value, also determined by the selector 25, and indicating that the end A has reached a predetermined level 14, a comparator 24A produces an enabling signal on a line 65, which signal sets a trigger in a circuit 27 and also opens a gate 26B. This taps the outputs of a gate 29B to a counter 23B, which operates similarly to the counter 23A, and after delaying the pulse trains re-combines them with the original signals in a twin OR gate 28B so that the counter 23B counts two pulses for each unit of downward movement of the end B. Thus if the end B is at a height D above the end A when gate 26B is opened a signal is given on a line 56 when the end B has dropped a distance D/2. The signal on line 56 causes a second trigger in the circuit 27 to open an AND gate and stop the press in known manner. At this point the mid-point C of the crosshead is on the level 14.
Patent GB-275025-A (GB)
Title: Improvements relating to the construction of two-wheeled radial bogies for railway vehicles
IPC: B61F5/34
Filed: 1926-08-14
Abstract: 275,025. Edington, H. Aug. 14, 1926. Axle-trucks and bogies.-In a twowheeled radial bogie of the type in which radiation of the axles is provided for by movement of the axleboxes in a direction substantially transverse to the track in guides attached to the frame, a convex spherical bearing-surface 2, Fig. 1, is arranged between each axle bearing 1 and the axle-box housing 6 so that the housing can swivel in both an horizontal and a vertical plane, thus avoiding jamming of the axle-boxes in the guides, and permitting the use of straight instead of curved guides. In the construction shown, the lateral movement of the housing 6 takes place upon internal guide shoulders 16, Fig. 2, on slippers 12, which are also provided with external guide shoulders 13, Fig. 5, so as to be vertically displaceable with the housing 6 in guides 14 on the bogie frame 15. The concave spherical surface for the axle-boxes is arranged on a detachable pad 5, and the upper portion of the axle-box is provided with cooperating double-inclined surfaces 25, 28 of a known type for assisting in restoring the axles to a normal or central position after a curve has been traversed. In a modification, Fig. 12, the concave spherical surface is arranged directly on the axle-box housing 6 and single co-operating inclined surfaces 31, 33 are substituted for the double inclined surfaces. Grooves are formed in the slippers 12 to supply lubricant to the wearing surfaces from a pipe 18.
Patent GB-1154508-A (GB)
Title: Improved drum support.
IPC: G10D13/02
Filed: 1967-05-02
Abstract: 1,154,508. Drum stands. MEAZZI S.R.L., F. CALDIRONI and A. OLIVIERI. 2 May, 1967, No. 20173/67. Heading G5J. [Also in Division E2] A drum stand comprises a base portion 10 having feet 11, 12 and 13; a ball 19 and clamp 20 to secure an upper portion 24 to which a drum T may be releasably secured. The drum may be locked and released by a handle 35. A spring 31, which upwardly urges slidable ring 29, is attached to a slidable and lockable collar 30. The feet may be adjusted by ties 16, 17 and 18 pivoted to a slidable and lockable ring 15.
Patent GB-1077350-A (GB)
Title: Process for removing phosgene
IPC: B01D53/14
Filed: 1966-05-06
Abstract: Phosgene is removed from gas mixtures by contacting the mixture with crystalline alumina (preferably a -alumina) in the presence of enough water to hydrolyse the phosgene and to dissolve the hydrogen chloride formed.  The water is circulated and kept at a hydrochloric acid concentration of less than 5%, preferably 1-3%, either by dilution with fresh water or by neutralization.  The process may be carried out in a tower at least partly filled with a -alumina, the gas stream being introduced at a point below the alumina bed and the water at the top of the tower.  A temperature below 100 DEG  C. may be generally employed.
Patent GB-388031-A (GB)
Title: Improvements in and relating to the production of rubber masses
IPC: C08C1/00
Filed: 1931-07-14
Abstract: A non-coagulable emulsion or suspension of calcined gypsum and latex, containing more water than is necessary to hydrate the gypsum, is cast and allowed to dry to produce a porous material. In an example the mixture consists of 1000 gms. calcined gypsum; 660 gms. of the substance known under the registered Trade Mark "Revertex"; 17,5 gms. sulphur; 3 gms. accelerator; 10,03 gms. zinc oxide; and 400 ccs. water, containing 20 gms. alkali soluble casein; 1 gm. Nekal; 10 drops 4 per cent thymol solution and 20 ccs. 15 per cent ammonia. Mats may be made by casting the mixture on to a glass plate lying on a carriage frame which fits exactly in the vulcanizing vessel in which the mixture is dried in a vacuum at 40 DEG  C and then vulcanized.  The glass plate may bear an inscription or design. Floors may also be covered with the mixture.