baber/WOPTO huggingface dataset:
Patent GB-922008-A (GB)
Title: Securing arrangement for electric heating elements
IPC: H05B3/06
Filed: 1959-07-23
Abstract: 922,008. Mounting tubular electric heating elements through container walls. A. BLECKMANN, E. DAMHOFER, and H. BLECKMANN. July 23, 1959 [July 31, 1958; Sept. 1, 1958], No. 25344/59. Class 39 (3). [Also in Group XXVIII] A plurality of tubular heating elements are mountable in an opening in a container wall, which opening may be accessible only from the outside, by an outer apertured plate through which the elements extend, and an inner apertured plate and a member both of which are small enough to pass through the opening, the member being caused to extend radially beyond the periphery of the opening when the two plates are tightened towards one another by a screw connecting the two plates, whereby by continued tightening the outer plate may be clamped against the container wall. The deformable, reinforced sheet metal claws 11, which extend radially outwards between successive tubular heating elements 10 (not shown in Fig. 1) which pass in a liquid-tight manner through the outer plate 1, are bent back against the inner periphery of the opening 3 when the inner plate 9 is moved towards plate 1 by actuation of the hollow screw 7 upon which plate 9 is mounted, and which may house the temperature detector of a thermostat. In an alternative embodiment the deformable claws 11 are replaced by cranked levers pivoted to plate 1 (Fig. 3, not shown), or by a rubber cap fixed at its base to the plate 1 and provided with holes through which the elements extend: a modification applicable to an oblong opening is also described.
Patent GB-278008-A (GB)
Title: Improvements in bar-type coal cutting machines
IPC: E21C31/04
Filed: 1927-09-26
Abstract: 278,008. Allard, F. Sept. 25, 1926, [Convention date]. Coal-cutting machines. -A coal-cutting machine of the bar type has the end 6 of the bar reduced to the base of the keyslots 5 by which the bar is connected to its driving gear 4, the part 6 reciprocating in a bush 7 which rotates in a ball or roller bearing such as a combined journal and thrust bearing 10, 11. In a modification, the reduced end 6 is keyed to a sleeve of the same diameter as the part 1 of the bar. The engaging parts of the bar and gear 4 may be polygonal.
Patent GB-1102826-A (GB)
Title: Process for the production of ethylene
Inventor: HALLEE LAWRENCE PHILIP
IPC: C07C7/00
Filed: 1966-06-07
Abstract: Ethylene is produced by a process in which the product of thermally cracking naphtha in the presence of diluent steam is first subjected to a fractionation in which a fraction comprising C4 and lighter hydrocarbons and hydrogen is separated and then this fraction is subjected to a second fractionation at low temperature in which either propylene and ethylene or ammonia and ethylene are used as refrigerants.  The first fractionation zone is preferably operated to yield also an intermediate fraction comprising C5 and heavier components having an end point of 204 DEG  C., which may subsequently be hydrogenated to gasoline, and a fuel oil residue, which may serve as quench oil or source of heat in the process.  The light gaseous fraction is passed through a series of compressors, scrubbed with caustic, dehydrated, and introduced into the second fractionation zone.  This zone comprises in series a demethanizer, de-ethanizer, ethylene fractionator and purifier, depropanizer and desirably a debutanizer, the effluent from the depropanizer or, if used, the debutanizer being withdrawn for further treatment as a gasoline product.  The ethyleneethane mixture from the de-ethanizer is subjected to selective hydrogenation to remove acetylene and separated in the ethylene splitter into ethylene overhead and ethane bottoms, the overhead then being rectified to remove methane and yield a substantially pure ethylene stream.  The hydrogenating gas used to remove acetylene is obtained from the demethanizer overhead and contains 80-90% mols. H2.  The refrigerants may comprise ethylene and propylene products from the process.
Patent GB-1182827-A (GB)
Title: Apparatus Including a Slidable Member and Means for Blocking its Movement.
IPC: H01H13/56
Filed: 1967-06-01
Abstract: 1,182,827. Releasable fastenings. TELEFONAKTIEBOLAGET L.M. ERICSSON. 1 June, 1967 [7 June, 1966], No. 25380/67. Heading E2A. Apparatus includes a slidable member 6; two toothed wheels 4, 5 mounted on a common pivot pin, said wheels being rigidly connected with each other and provided with teeth orientated in opposite rotational directions, the number of teeth of the one wheel 5 being greater than the number of teeth of the second wheel 4; a pawl 1 provided by the slidable member for rotating the first wheel through an angle corresponding to one tooth pitch of the first wheel when the slidable member is moved in one direction; a resilient blocking pawl 2 for preventing reverse rotation of the wheels; a shoulder 3 provided on the slidable member, the shoulder engaging one of the teeth of the second wheel after the wheels have been rotated through a given number of tooth pitches of the first wheel, the engaged tooth preventing the return movement of the slidable member from being completed; the slidable member being released from its blocked position by further movement in the one direction. The pawl 2 is resilient and engages the wheel 5 and the wheels can also be released by disengaging the pawl 2 from the teeth of the wheel 5. The member 6 is guided for movement in a groove in a base member 7 on which the wheels are mounted and the member 6 can be a push button in which case when release is effected by moving the pawl 2 out of engagement with the teeth of the wheel 5 this can be accomplished by an auxiliary push button; alternatively it can be accomplished by a bar or a solenoid; it is also stated that release of the wheel 5 from the pawl 2 can be accomplished by axially displacing the wheels instead of by moving the pawl 2. As shown the wheel 5 has twice as many teeth as the wheel 4 so that two movements of the member 6 in the downward direction is necessary before it can return to its original position; however that the wheel 5 can have three times as many teeth as the wheel 4 so that three downward movements of the slidable member is necessary before it can return to its original position. The wheel 4 can have its teeth so arranged that sometimes the wheels have to be rotated through an angle corresponding to twice the tooth pitch of the wheel 5 and sometimes through an angle corresponding to three or four times the tooth pitch of the wheel 5. The unit consisting of the wheels 4 and 5 is made easily removable so that it can be exchanged for a different pair of wheels but in a modification a plurality of pairs of wheels are arranged on a single pivot pin with provision for axially displacing the pairs of wheels.
Patent GB-1094043-A (GB)
Title: System for controlling operation of equipment such as apparatus for proportioning and blending fibres
Inventor: WISE CECIL SHAVER
IPC: G01G13/00
Filed: 1965-06-16
Abstract: 1,094,043. Weighing systems. FIBER CONTROLS CORPORATION. June 16, 1965, No. 25439/65. Heading G1W. A weighing system comprises means for feeding a material into a weighing container for discharging a predetermined quantity of material on to a conveyer, means for feeding material to said weighing container in response to means for sensing when the container holds less than said predetermined quantity, a switch closed by the conveyer to initiate discharge of material from the container and stop and then restart the conveyer, and means for positively preventing inadvertent restarting of the conveyer by coasting movement, and for preventing discharge of the material from the container after closure of said switch, if the container does not hold the required predetermined quantity of material. The weighing system particularly described is incorporated in fibre blending apparatus in which three different types of fibre A, B, and C are fed in predetermined proportions on to a conveyer 14 from feeders F1, F2, F3 via weigh pans W1, W2, W3 and solenoid valves V1, V2, V3, and are discharged from the conveyer 14 into a blender (not shown). The feeding operation is initiated by closure of a switches P5 and 20 to energize the conveyer motor relay CR to start the conveyer motor 16, and to energize the feeder relays FR1, FR2, FR3, thereby starting the feeders F1, F2, F3 and also closing switches 22. When the three pans W1, W2, W3 have received predetermined quantities of material a switch 34 is closed by a cam 28 operated by the conveyer 14 to energize a relay TD2 which opens a switch 58 to de-energize the conveyer motor relay CR. Switches 52, 54 are closed by the relay TD2 to energize a relay TD1 and close a switch 40 to re-energize the conveyer motor relay CR, de-energize the relay coil TD2, and open solenoid discharge valves V1, V2, V3. The relay coil TD2 after a delay sufficient for the completion of the discharge of the materials from the weigh pans W1, W2, W3 opens switches 54, 56 to de-energize the conveyer motor 16 and the discharge valves V1, V2, V3. When all three weigh pans have returned to their empty positions the relay coil TD1 is de-energized by the actuation of pan operated switches WS 1 , WS 2 , WS 3 , and after a delay period the switch 46 recloses to initiate a fresh cycle. If the weigh pans have not all received a required amount of material when the switch 34 is closed by the cam 28 and then reopened a relay D1L remains energized to maintain a circuit through the relay TD2 thereby holding open the valves V1, V2, V3 to complete the required discharge.
Patent GB-864705-A (GB)
Title: Improvements in or relating to methods of producing silicon bodies
IPC: H01K1/54
Filed: 1958-08-08
Abstract: 864,705. Semi-conductor devices. WESTERN ELECTRIC CO. Inc. Aug. 8, 1958 [Aug. 15, 1957], No. 25502/58. Class 37. A semi-conductor device having regions of differing conductivity produced by vapoursolid diffusion of significant impurities is made by a method comprising the forming of an oxide layer of a face of a silicon body, producing an etchresistant pattern on the face, applying an etchant to remove the oxide layer to expose the silicon in accordance with the pattern, removing the etchresistant pattern and subjecting the face to . the vapour of a significant impurity not capable of penetrating the oxide layer. According to one example, a P-type layer formed on a single crystal of N-type silicon by heating in an atmosphere of boron was removed from all the surfaces except one major face. The cleaned wafer was then oxidized by heating in a tubetype furnace, cleaned with toluene and, after drying, covered with photo-resist (compounded of polyvinyl cinnamate, methyl glycol acetate and perinaphthenone sensitizer compound). The pattern shown in Fig. 4A was then produced by photographic techniques. After the resist had hardened the oxide beneath the exposed portions of the pattern was etched away using a solution of ammonium bifluoride after which all the remaining photo resist was washed of using a suitable solvent. The wafer was then subject once more to diffusion in a boron atmosphere thus producing P-type conductivity regions of the exposed quadrants of the upper face of the crystals. The wafer was then oxidized again and the same process was used to produce the pattern shown in Fig. 7A in the oxide layer the crystal was then subject to diffusion treatment in a phosphorus pentoxide atmosphere to produce N-type conductivity regions. After washing the device was subject to final processing including the attachment of electrodes. The same method may be used for etching away exposed parts of a silicon crystal as well as the oxide layer described above and in this case a suitable etchant is silver nitrate solution in nitric and hydrofluoric acid. Specifications 717,708, 717,710, 717,712, 805,207 and 809,644 are referred to.
Patent GB-1321968-A (GB)
Title: Radio beacon with a rotating cardioid radiation pattern in particular for use in landing grounds of secondary importance
IPC: H01Q3/24
Filed: 1972-05-31
Abstract: 1321968 Radio navigation; aerials THOMSON-CSF 31 May 1971 [1 June 1971] 25551/72 Heading H4A and H4D A radio beacon comprises respective means for radiating fixed and rotating lobes, so that a rotating cardioid radiation pattern results. The rotating lobe radiating means includes a plurality of dipoles which are symmetrically disposed about a centre. By means of a switching device it is arranged that in each cycle, corresponding to one revolution of the rotating lobe, the dipoles are first energized in sequence with direct connections to an R.F. source, and are then energized in sequence with reversed connections to said source. As described, a beacon aerial system, which is supported on a mast 1, Fig. 1, and is protected by a radome 4, comprises a part 2 made up of three radially extending, symmetrically disposed, centre-fed dipoles 5, 6, 7 and a part 3 made up of two centre-fed curved dipoles 8-9 and 10-11, which are arranged in loop fashion around the axis. One conductor of a two-conductor feeder is connected to the half-dipoles 8 and 10, while the other conductor is connected to the half-dipoles 9 and 11. The aerial part 3 consequently radiates a fixed omnidirectional lobe. As shown in Fig. 3, the dipoles 5, 6, 7 of the aerial part 2, have respective halfdipoles 105-205, 106-206, 107-207. The half-dipoles 105, 106, 107 are connected through respective switching diodes 305, 306, 307 to a point A, and the half-dipoles 205, 206, 207 are connected through respective switching diodes 405, 406, 407 to a point B. Said points are connected together by a 180-degree phase shifting line 99, and either point may be directly connected to an R.F. feeder 30 by means of a respective switching diode 63, 65. By suitable sequential application of operating voltages on lines 55 to 61 the dipoles may be energized one after the other, with phase reversal every half cycle, to produce the rotating lobe. Circuit arrangements for the beacon are described with reference to Fig. 2 (not shown) and include an L.F. generator which has one output at 30 Hz for frequency modulating a reference phase subcarrier, and another output at 180 Hz for a control signal generator which produces the operating voltages for the diodes.
Patent GB-808449-A (GB)
Title: Improvements in or relating to means for mounting and securing a cathode ray tube in a television receiver cabinet
Inventor: HUGGINS ERIC WILLIAM
IPC: H04N5/645
Filed: 1956-08-21
Abstract: 808,449. Cathode-ray tube mountings. PYE Ltd. Aug. 21, 1957 [Aug. 21, 1956], No. 25567/56. Class 40 (7). A television receiver rectangular cathode-ray tube is secured between an apertured plywood panel 1 and a sheet-metal bracket 12 by tie-rods 16 and hook bolt 18; tension is applied by means of wing-nuts 16a. The bracket carries the deflector coil assembly 19 which may be centred using the wing-nuts. The panel may have holes (see Fig. 1, not shown) to accommodate control spindles and may form the front of the receiver cabinet, an implosion guard being fitted over the exposed tube face. A rubber ring 14 is interposed between the bracket and the tube bulb. More than three tie-rods may be provided.
Patent GB-1141727-A (GB)
Title: Rotation rate sensor
IPC: G01C19/66
Filed: 1967-06-02
Abstract: 1,141,727. Lasers. INTERNATIONAL STANDARD ELECTRIC CORP. 2 June, 1967 [8 June, 1966], No. 25609/67. Heading H1C. [Also in Division G1] In a rotation rate sensor comprising a ring laser in which a bias or polarizing frequency of angular velocity R is used to prevent mode locking at low rotational rates, a further polarizing frequency of angular velocity r (r less than R) is introduced into the system to enable the effects of random drift to be substantially reduced. Both angular velocities R, r may be applied directly to the ring laser, or angular velocity R alone may be applied directly and the resultant rotational rate output frequency modulated externally by angular velocity r. Fig. 4 shows a ring laser using four active media in an optical path formed by mirrors M 1 , M1 2 , M 3 , M 4 , in which angular velocity R only is introduced as a control signal influencing an electro optic or magneto optic element 5. Mirrors M 8 , M 9  insert the element into the closed optical path, further mirrors M 5 , M 6 , M 7  being used to pass an output to a photomultiplier 1. A further mirror and electro optic or magneto optic element combination (M 10 ), (M 11 ), (6), Fig. 5 (not shown), is associated with mirror M 1  for additionally introducing angular velocity r directly. A complete system using a ring laser with both angular velocities R, r applied directly is shown in Fig. 6, the output from the laser being applied through a highpass filter 6 which passes (R+r) angular velocity components alone to a phase detector 7. A reference signal of angular velocity R is applied from a source 13 to the phase detector which applies an angular velocity component r to phase detectors 8, 9. A source 12 of angular velocity r energizes phase detector 8 directly, and feeds phase detector 9 through a #/2 phase shifter 10, the two phase detectors applying quadrature components of angular velocity r to a circuit 11 in which r and random drift terms are neutralized and an output is obtained proportional to the rotation to be detected. Fig. 7 shows an arrangement in which angular velocity r is applied externally, using the ring laser shown in Fig. 4. This arrangement is similar to Fig. 6 except that a modulator 25 energized by an angular velocity r source 22 is connected in the output of laser gyroscope 15. Embodiments for detecting the outputs of vibratory gyroscopes are also described (see Division G1).
Patent GB-731701-A (GB)
Title: Steroid enol esters
IPC: C07J75/00
Filed: 1952-10-13
Abstract: The invention comprises 3 : 20-dienol acylates and 3 : 11 : 20-trienol acylates of pregnane-3 : 11 : 20-trione, having the formulae:  <FORM:0731701/IV (b)/1> and <FORM:0731701/IV (b)/2> respectively (wherein the acyl group (Ac) is derived from an organic carboxylic acid, preferably containing from 1-8 carbon atoms, and which may further contain, as non-reactive substituents, halogen atoms or alkyl or alkoxy groups, e.g. acetyl, propionyl, octanoyl, phenylacetyl, benzoyl, chloroacetyl, and methoxybenzoyl), and the preparation thereof by heating pregnane-3 : 11 : 20-trione with an organic carboxylic anhydride in the presence of an acid catalyst (e.g. p-toluenesulphonic acid, sulphosalicylic acid or sulphuric acid).  The anhydride is preferably present in excess, and when preparing 3 : 20-dienol acylates the progress of the reaction is followed by titration of the distillate.  Inert solvents may be used, particularly toluene. In examples (1) pregnane-3 : 11 : 20-trione, acetic anhydride and p-toluene sulphonic acid are refluxed so that the anhydride slowly distils, and the residue after chromatography yields the 3 : 11 : 20 - trienol acetate; (2) pregnane-3 : 11 : 20-trione, sulphosalicylic acid, acetic anhydride and toluene are distilled until distillate contains two equivalents of acetic acid, when residue yields the 3 : 20-dienol acetate.  Other examples describe the preparation of the 3 : 20-di-enol propionate and octanoylate; and the 3 : 11 : 20-tri-enol propionate and butyrate.
Patent GB-1087612-A (GB)
Title: Improvements in or relating to governor-controlled electric motors having a commutator
Inventor: WREN JOHN PELHAM
IPC: H02K7/04
Filed: 1963-06-27
Abstract: 1,087,612. Electric motors; speed responsive switches. GARRARD ENGINEERING Ltd. June 26, 1964 [June 27, 1963], No. 25675/63. Headings H2A and H2B. [Also in Division G3] The speed of a D.C. motor is kept substantially constant by means of a plurality of centrifugal switches connected between the commutator and the armature winding and carried on a disc of insulating material coaxial with the motor axis. As shown, insulating disc 3 carries brackets 4, 8 which mount adjustment screws 14, 15 including the fixed contact of the switches Spring arms 16, 17 mounted from brackets 4, 9 include the moving contacts and weights 16a, 17a respectively. Commutator segments 21, 22, 23, which may be plated on to disc 3, are connected to the armature windings 1a and the other ends of the windings are connected together through the switches, Fig. 2 (not shown). Resistors 18, 19 are connected across the switch contacts, and to ensure static and dynamic balance, weight pins can be inserted in holes 20 around the periphery of the disc.
Patent GB-604525-A (GB)
Title: Improvements in or relating to fuel injection pumps for internal-combustion engines
IPC: F02D1/00
Filed: 1945-10-03
Abstract: 604,525. Regulating. BEDALE, P. W., and HUGHES, J. O. P. Oct. 3, 1945, No. 25724. [Class 7 (vi)] A fuel injection pump for an internalcombustion engine has a metering jet controlled to give a flow in accordance with boost and back pressure and a second metering jet in parallel with the first controlled to give a flow proportional to the difference between a preselected datum temperature and the temperature in the induction pipe. A formula involving engine speed in addition to the above factors is given for the fuel flow. The fuel delivered to a chamber 14 by a vane pump 12 flows to a chamber 19 through an orifice 16 controlled in accordance with engine speed by a centrifugal governor 18 actuating a needle valve 17, and flows to the delivery chamber 22 through two orifices in parallel, the first controlled by a needle 24 connected to capsules 33 subject to boost pressure in the chamber 26 and atmospheric pressure through a pipe 29, and the second by a needle 25 operated by a capsule 30 in a liquidfilled chamber 31 connected by a pipe 32 to a thermometric bulb in the induction pipe. At the average temperature To of the operating range the needle valve 25 is partially open, rise of temperature closing it according to a factor To-Tc, where Tc is the induction pipe temperature. The needle valve 17 may be connected to a diaphragm subject to the fuel pressure in chamber 19 and adjustably loaded by a spring 20 to increase the flow at slow running, and the needle 24 may be contoured for enrichment at maximum power.
Patent GB-743068-A (GB)
Title: Improvements in stapling mechanism
Inventor: TURRALL GEORGE
IPC: B27F7/38
Filed: 1952-10-14
Abstract: 743,068. Stapling. CRABTREE & SONS, Ltd., R. W. Oct. 14, 1953 [Oct. 14, 1952], No. 25775/52. Class 89 (3). In a stapling machine, an uninterrupted feed of wire is effected by arranging that when either of two reels of wire is exhausted, wire is automatically drawn from the other. Wire W is drawn from reels A, B through guides 10, 9 which converge into a single guide 11 and passes thence to the stapling machine. The wire is fed forward by a main pair of feed rolls 1, 2 and a supplementary pair 3, 4 all driven from a gear 18. The rolls 2, 4 are carried by a pivoted frame 6 and urged towards the rolls 1, 3 by springs 8. The separation of the rolls 3, 4 is slightly greater than that of the rolls 1, 2 so that the former 3, 4 run idly until the end of the wire from one reel passes from between the latter 1, 2; the rolls 3, 4 then move closer together and feed the wire from the other reel up to the rolls 1, 2 which then take over the feed of the new wire. The roll 3 is mounted in an eccentric bush 13 for adjustment. Specification. 740,079 is referred to.