baber/WOPTO huggingface dataset:
Patent GB-286999-A (GB)
Title: Improvements relating to thermionic valves or electron discharge tubes
IPC: H01J19/02
Filed: 1927-10-05
Abstract: 286,999. Naamlooze Vennootschap Philips' Gloeilampenfabrieken. July 26, 1927, [Convention date]. Addition to 282,712. Vacuum tubes.-In a valve having a filament a, a grid b, and one or more anodes c of small dimensions and one or more shields according to the parent Specification, the shield d is provided with a slot to receive the support h and lead for the anode. The support h is connencted through glass beads k with supports l mounted on the supports m for the shield. The supports m are connected by a wire e with the centre of the filament.
Patent GB-682332-A (GB)
Title: Pesticidal compositions
IPC: A01N57/14
Filed: 1949-10-13
Abstract: Pesticidal compositions comprise as essential components aromatic esters of dialkyl thiophosphoric acids, i.e. o,o-dialkyl-o-aryl thiophosphates and distributing agents which are polyglycol ethers of the formula <FORM:0682332/VI/1> or the salts of their sulphuric esters of the formula <FORM:0682332/VI/2> Ar being benzene or its lower homologues, R1 being phenyl, aralkyl or cyclohexyl, R2 being phenyl, aralkyl, cyclohexyl, or hydrogen, R3 being phenyl, aralkyl or hydrogen, X being a water-soluble salt-forming radical, n being a digit from 5 to 25, and m being a digit from 1 to 20.  The aromatic nuclei of these compounds may be further substituted by halogen or lower alkyl radicals.  The preferred phosphoric acid esters are dimethyl-, diethyl-, or di-n-propyl-p-nitro-phenyl thiophosphate. The compositions emulsify readily with water.
Patent GB-1509936-A (GB)
Title: Inhibitor coating for solid rocket propellant charge
IPC: C06B21/00
Filed: 1975-06-20
Abstract: 1509936 Inhibited solid propellants WERKZEUGMASCHINENFABRIK OERLIKON BUHRLE AG 20 June 1975 [21 June 1974] 26367/75 Heading F3A A solid rocket propellant charge inhibited against undesired burning-off, comprises: an insulating layer comprising a binder and a filler; and a protective- and adhesion layer located between the insulating layer and the propellant charge; wherein the binder consists of a castable mass which has poor smoke developing qualities, the filler consists of a granular cooling agent, and the protective and adhesion layer consists of a completely hardened polyisocyanate forming a barrier against plasticizer migration. The cooling agent comprises aluminium hydroxide, aluminium sulphate, aluminium fluoride, lithium metaborate, magnesium sulphate, sodium silicate, ammonium oxalate, ammonium sulphate, ammonium borate, urea or melamine. The binder comprises polyurethane, polyester, acetytri - n - butylcitrate, diphenylamine or 4,4<SP>1</SP> - methylenebis - (2 - chloroaniline).
Patent GB-1262767-A (GB)
Title: Improvements in current limiting protective means
IPC: H02H3/02
Filed: 1969-05-23
Abstract: 1,262,767. Protective arrangements. GENERAL ELECTRIC CO. 19 May, 1969 [29 May, 1968], No. 26424/69. Heading H2K. An overcurrent protective arrangement comprises a load current pathincluding normally conducting solid state controlled switching means, e.g. thyristors 51, 52, shunted by the series combination of second switching means 63, 64 and a current limiting impedance 61, and means responsive to excess current in the path to turn off the controlled switching means and to switch on the second switching means so that the load current is caused to flow through the impedance. In the arrangement shown, a current transformer 55 is connected to control circuits 80, which when excess current occurs, apply firing pulses to commutating thyristors 73, 74 connected in series with pre-charged capacitors 71, 72. The discharge of the capacitors turns off the main thyristors 51, 52, the control circuits 80 at the same time ceasing to supply firing signals to the main thyristors 51, 52 and supplying firing signals to thyristors 63, 64 which conduct, the load current being diverted through the resistor 61. After a delay, the control circuits 80 stop the supply of firing pulses to the thyristors 63, 64 to cause final interruption of the load current unless the fault has cleared, in which case the arrangement reverts to its normal condition. Fig. 2 (not shown) illustrates the logic control circuits 80. The arrangement may be used in protecting thyristor invertors as in Specification 1,262,768.
Patent GB-482451-A (GB)
Title: Improvements relating to electrically driven winding, hauling and like equipments
IPC: H02P1/02
Filed: 1936-09-29
Abstract: 482,451. Control of motors. SMITH, G. D., GEORGE, H. N., and METROPOLITAN-VICKERS ELECTRICAL CO., Ltd. Sept. 29, 1936, No. 26454. [Class 38 (iii)] Safety arrangements.-Electrically driven winding equipment is provided with an electromagnetically operated safety device CIS which when de-energized moves a speed controller LC for the winder motor WM to its minimum speed position and prevents movement from that position unless energized, means also being provided which prevent energization of the safety device unless either the controller is in its minimum speed position or the contactors fc1, rc1 connecting the motor WM to the supply are closed, reclosure of the contactors also being prevented unless the controller is in its minimum speed position. A driver's control lever acts through a rod r on one end of a floating lever c and controls the controller LC through fluid pressure servo-apparatus PC, PV, the control valve PV of which is connected to a point f on the lever c. A point l on the lever c near to the point f is connected through a pin and slot coupling to the plunger of 'a solenoid CIS weighted at W, and the circuit of the solenoid CIS includes a contact n2 closed only when the controller LC is in its minimum speed position. Contacts fc4 and rc4, closed with respective main reversing contactors of the motor WM are connected in parallel with the contacts n2. The operating coils FC, RC, for the reversing contactors fcl, rcl are first energized through a contact n1 closed only when the contact n2 is closed, and maintained by contacts fc2, rc2. Thus if the contactor FC or RC opens with the controller LC operated, the solenoid CIS is de-energized and the controller operated to its minimum speed position. Until the controller attains this position the contactor cannot be reclosed, and the solenoid CIS cannot be re-energized to permit operation of the controller. An economy resistance ER for the solenoid CIS is provided, and the closing circuits for the coils FC, RC of the contactors fc1, rc1 include contacts vic operated by a coil VIC in accordance with the voltage on the motor. The lever c may be coupled through a pin-and-slot connection to a torque motor arranged as described in Specification 482,450, [Group XXIX]. Specifications 482,447, [Group XXXV], and 482,448 also are referred to.
Patent GB-956332-A (GB)
Title: Improvements in vertically moving cable lifts
IPC: E21D7/02
Filed: 1962-07-10
Abstract: 956,332. Lift installations; counterbalancing. D. HLADNIK. July 10, 1962, No. 26524/62. Headings B8B and B8L. In a lift installation, the cabin 1 and counterweight 6 are secured to the suspension rope 7 at points B, C which are offset from their vertical axes and are provided with guide rollers 2, 3 engaging opposite walls of the shaft or channels in opposite shaft walls. As shown, the cabin rollers 2, 3 which may be rubbertyred, engage opposite walls of channels in opposite walls of the shaft and rollers 5 are provided to engage the other walls of the channels. The counterweight 6 also is provided with rollers 2, 3 engaging walls of the shaft. The driving motor 12 may alternatively be mounted either on the counterweight 6, Fig. 12, and connected to the guide rollers 2<SP>1</SP>, 3<SP>1</SP> which frictionally engage the shaft walls or on the cabin, Figs. 9, 10, 11 (not shown). The cabin is provided with a gripper device 9, Fig. 7, for engagement with a safety rope 10 suspended from a compression spring 11. The rolling surfaces or channels of the shaft walls for the guide rollers may be provided with a bearing surface of, for example, sheet metal.
Patent GB-950891-A (GB)
Title: Elastomer composition
Filed: 1961-07-21
Abstract: Elastomeric organopolysiloxanes are prepared by heat or room temperature curing a composition comprising (A) an organopolysiloxane having a viscosity of at least 100,000 centistokes when measured at 25 DEG C. and containing an average of about 2 organic radicals per silicon atom, at least 0.01% of the silicon atoms in the organopolysiloxane being attached to a carboxyalkyl radical, with the remaining organic radicals being monovalent hydrocarbon radicals, halogenated monovalent hydrocarbon radicals or cyanoalkyl radicals, (B) a filler of finely divided silica or finely divided carbon and (C) as a curing agent, at least 0.1% by weight, based on the organopolysiloxane of a compound of a polyvalent metal.  Compounds of polyvalent metals are defined as metal oxides and compounds of a polyvalent metal ion and an ion of a readily volatilisable substance. They may be the oxides, hydroxides, carbonates, carboxylates, alcoholates, and enolates of magnesium, calcium, strontium, barium, titanium, zirconium, manganese, iron, cobalt, nickel, copper, zinc, cadmium, aluminium, tin, lead and antimony,  The curing agent may be added as a solution or dispersion in a solvent, e.g. mineral spirits. Examples are given.  The products may be used for gaskets and electrical insulation of e.g. transformers. In Example 1, a methyl-b -carboxyethylpolysiloxane is prepared by reacting methyl-b -cyanoethyldichlorosilane and concentrated hydrochloric acid, adding water, separating, purifying and drying the resultant fluid methyl-b -carboxyethylpolysiloxane and copolymerizing it with octamethylcyclotetrasiloxane in the presence of sulphuric acid. Specifications 806,563, 839,374, 864,681 and 950,892 are referred to.
Patent GB-1460712-A (GB)
Title: Radar aerials
IPC: G01S13/52
Filed: 1973-06-04
Abstract: 1460712 Aerials; pulse radar EMI Ltd 28 May 1974 [4 June 1973] 26600/73 Headings H4A and H4D A radar aerial comprises three successive sections 1, 2, 3, Fig. 1, which are arranged adjacently in a row. The lengths of the apertures of the sections 1 and 3 are the same, and switch means are provided so that either the sections 1 and 2, or the sections 2 and 3, may be coupled to the radar transmitter/receiver. As described, a coupler 5 is connected on one side by a feed line 4 to the radar transmitter/receiver, and on the other side to the aerial section 2, and to a switch 6. The switch 6 is controlled by electrical pulses from a circuit 7, and is arranged to direct power either to the section 1 or the section 2. The aerial may be used in a sideways looking aircraft radar installation. The aerial sections would be waveguides each provided with an array of radiating slots. Said slots are arranged such that the sections 1 and 2 provide in combination a directive pattern having a main lobe displaced to the left of the centre of the total aerial length, whereas the sections 2 and 3 provide in combination a directive pattern identical in magnitude and phase, but having a main lobe displaced to the right of the centre. In a first position of the aircraft, as shown at A in Fig. 2, the sections 2, 3 are coupled by the switch 6, a radar pulse is transmitted, and echo return signals are received. Later, when the aircraft has moved a distance which is equal to the length of the section 1 or 3, as shown at B, another radar pulse is transmitted, and the echo return signals are received. It will be apparent that the aerial is effectively stationary for the two pulses. Moving targets may be identified by a discrete change in the phase of the returns for a particular range cell. A series of such pairs of returns may be taken along the flight path relating to an are being mapped.
Patent GB-329595-A (GB)
Title: Method of and means for forming screw threads by grinding
IPC: B24B19/02
Filed: 1929-09-03
Abstract: 329,595. Lindner, H. Sept. 3, 1929. Screw-threads, grinding; trueing rotating tools; wheels.-A roller for grinding screw-threads is cylindrical in shape, but in use has its axis inclined to that of the: work, the ribs 6 being cut symmetrically with respect to a line IV-IV perpendicular to the axis II-II of the work. The trueing tool 3, is similarly formed.
Patent GB-1176848-A (GB)
Title: Hydraulic Control Circuit for Sliver Roll Forming Machines.
Inventor: CROCKATT DAVID DOUGLAS
IPC: B65H63/08
Filed: 1967-06-10
Abstract: 1,176,848. Doffing sliver rolls. GIDDINGS & LEWIS-FRASER Ltd. 31 May, 1968 [10 June, 1967], No. 26904/67. Heading DID and D1N. Withdrawal of arbor 10 for the doffing of a sliver roll wound thereon and the subsequent return of the arbor 10 is effected by a fluid operable piston and cylinder 11, the fluid flow to which is controlled by a valve 55 operated by a cam arrangement. During winding the movement of arbor 10 away from drive roller 13 is restrained by a second fluid operable piston and cylinder 12. As the diameter of the roll increased during winding saddle 6 supporting the arbor moves up slides 5 and causes upward movement of piston 54. End 88 of cylinder 12 is replenished with fluid from reservoir 62 by pump 56 via conduits 57, 61, open valve 60 and conduit 61A, valve 55 being closed. Surplus fluid from end 87 of-cylinder 12 returns via conduit 63, relief valve 66, conduit 65 and 63A to reservoir 62. The saddle 6 is provided with a pair of cams 79, 80 and as the saddle moves upwardly and the roll reaches a predetermined diameter, cam 79 trips a latch 72 and the slide 68 of valve 55 is spring urged to an end position to allow fluid to flow through conduit 59 to end 71 of cylinder 11 to cause axial withdrawal of arbor 10 from the roll which falls clear of the apparatus guided by plates 40, 41. Saddle 6 then passes down slides 5 under gravity and under the restraint of cylinder 12. Just before reaching its lowermost position cam 80 on the saddle engages a roller 82 and the cam 80 pivots lever 76 against end wall of a slot 75 in rod 69 to pull the rod down and thereby cause slide 68 of valve 55 to be pulled to the other end position. Fluid thn flows through conduit 58 to end 90 of cylinder I to cause the arbor to be returned to its winding position. Manual operation of the valve 55 may occur.
Patent GB-861825-A (GB)
Title: Improvements in wrapping machines
Inventor: BROOK LEONARD
IPC: B65B57/12
Filed: 1958-08-21
Abstract: 861,825. Wrapping machines. FORGROVE MACHINERY CO. Ltd. July 24, 1959 [Aug. 21, 1958; Oct. 14, 1958], Nos. 26908/58 and 32768/58. Class 94(1). [Also in Group XXIV] A wrapping machine of the kind comprising a conveyer 10, preferably an intermittently rotating disc having article receiving pockets 11 and which feeds the articles to a leading station where they are transferred to a wrapping mechanism, a mechanism for feeding wrappers to the articles so that each article carries a wrapper with it into the wrapping machanism, and a trip mechanism, for testing the presence of articles in the pockets, is characterised in that the trip mechanism comprises a cam mechanism 25, a cam lever 32, a trip arm 35 operable by the lever 32 through a spring 33, a trip member 21 coacting with the arm 35, means for disabling the wrapper feed mechanism when a detector; finger 12 movable by the cam 25 under the influence of a spring 18 enters an empty pocket 11, and causes the member 21 to obstruct the arm 35. In one embodiment, Fig. 1, the finger 12 is mounted on an arm 15 fixed to a shaft 14 to which levers 16, 17 are also fixed. The spring 18 holds the lever 17 in contact with a roller 19 on a control arm 20 which is integral with an arm 28 rotatably mounted on a shaft 29 and rocked by the cam 25. The finger 12 enters a pocket 11 upon anticlockwise rotation of the arm 20 and if it is arrested by the presence of an article therein the arm 15 and the lever 16 are prevented from moving further, under the action of the spring 18, and the member 21 remains unmoved. The arm 35 and a lever 36, both fixed to the shaft 29, are rocked to the full extent by the cam 25 so that the lever 36 is clear of a roller 43 on a pawl 39 fixed to the shaft 26 and which engages a ratchet 41 on a sleeve 42 rotatably mounted on the shaft 26 and which drives the wrapper feed mechanism. When the pocket 11 is empty the spring 18 rocks the arm 15 and the lever 16 clockwise so that the member 21 is displaced anti-clockwise. The arm 35 and the lever 36 are arrested by the member 21 and the spring 33 yields to prevent further movement of the lever 32. The lever 36 contacts the roller 43 to disengage the pawl 39 from the ratchet 41 and disable the feed mechanism. In a modification, Fig. 4, a subsidiary trip arm 135 is rocked, against a tension spring 51, when the finger 12 enters a pocket 11 containing an article 30, to move a trip plate 124, through a pin 55 and a lever 57, clear of a trip plate 125 on the arm 35 so that the lever 36 is clear of the pawl 39. When the pocket 11 is empty, the arm 135 is not rocked and the plates 124, 125 coact to limit the movement of the arm 35. The lever 36 is stopped and coacts with the pawl 39 to disable the wrapper feed mechanism.
Patent GB-628444-A (GB)
Title: Improvements in or relating to an image-forming composition
IPC: B41C1/10
Filed: 1947-10-07
Abstract: 628,444. Inks. ADDRESSOGRAPH-MULTIGRAPH CORPORATION. Oct. 7, 1947, No. 26925. Convention date, Feb. 5. [Class 146 (iii)] [Also in Group XVI] An image-forming composition or ink for forming images upon planographic printing plates, such as those with a parchment or like cellulose base, is formed of a solution of an image-forming substance such as an organic dye, and a fatty acid component which is present in a percentage by weight of between two and four. The composition may be applied as a coating of an ink-ribbon. Example I. Negrosine base black dye 27 parts by weight : tricresyl phosphate 50 parts : diluent diethylene glycol mono-laurate 20 parts : stearic acid 3 parts. When used to form a typewriter ribbon the base of the ribbon is a cellulosic material or paper such as a paper made from rope stock known as " Superflex," or the paper " Special Aldex C " (Aldine Paper Company).
Patent GB-205324-A (GB)
Title: Apparatus for separating from bulk and delivering measured quantities by volume
IPC: G01F11/22
Filed: 1922-10-05
Abstract: 205,324. Seligman, R. Oct. 5, 1922. Moving - chamber apparatus; varying quantity measured in.-Relates to apparatus having a single or multichambered valve and consists in a construction in which the valve is rotated by a disc forming an end cover for the valve casing and in which provision is made for varying the capacity. The valve b rotates in a casing a and is provided with inlet and outlet ports c, d adapted to register with ports g, h in the casing, air ports p, j in the latter registering with ports f, e in the valve. The valve is closed at one end by a cover q having a cone seating secured by a screwed ring t. The other end is closed by a cover 1 provided with a handle 4 for turning the valve, a screw union ensuring a tight joint at the end of the casing and also draining the coned valve home into the seating. A pin 3 affords a driving connection between cover and valve. The end q may be removed and an extension closed at one end and fitted with a cone at the other substituted for enlarging the chamber, or the cone may slope the other way and this part inserted into the valve to diminish the capacity. In the four-chambered valve adapted for continuous rotation shown in Fig. 7, each chamber has an elongated port 5 adapted to register with inlet and outlet ports g, h and a similar air-port alongside the port 5 adapted in the top position to register with an air port 7 during filling while a port 8 running lengthwise registers with an air port in the casing during discharge.
Patent GB-1004488-A (GB)
Title: Improvements in circular knitting machines
IPC: D04B15/68
Filed: 1962-07-13
Abstract: 1,004,488. Knitting-machine. SOLIS S.r.l. July 13, 1962 [July 17, 1961; Oct. 10, 1961], No. 27024/62. Heading D1C. A circular knitting-machine has needle jacks provided with butts at some of eight levels, the butts of a group of four adjacent jacks being arranged on four of the levels, the butts of a second group of four jacks being arranged on the other four levels, eight slidable cams being associated with the jacks, one on each of the said levels and capable of being withdrawn from, or wholly or partially inserted to act upon, the butts, each jack being provided with low butts on two or more levels, each jack in each group of four jacks presenting a high butt in one of the four levels for forming a tuck stitch. The cams 11 are actuable by spring biased levers 26, 27 associated with pattern cams 30, two such levers engaging each cam slide. Members 34, 35 are displacable to prevent operation of the levers, the member 35 having a surface 35b which when presented allows only partial insertion of the cam slides. The jacks have a notch which, when the jack is selected to rise, engages a fixed cam 12 to complete the rise initiated by the appropriate cam slide. The cam slide block 22 may also carry two needle butt engaging bolt cams (Fig. 10 not shown) to respectively raise the needles to clearing height and lower them before the jacks reach the cam slides. The machine has two feeding stations at one of which two yarns are fed, one yarn being located higher than the other to be picked up by high needles only. Plain stitches are formed at the other feeding station.
Patent GB-272091-A (GB)
Title: Improvements in door handles and fastenings
IPC: D06F37/10
Filed: 1926-10-28
Abstract: 272,091. Marks, E. C. R., (Troy Laundry Machinery Co., Ltd.). Oct. 28, 1926. Sliding - bolts- Handles 26 suitable for controlling the sliding doors 12 of washing - machine cylinders fall into a depression 14 in. the doors when operated to shoot the bolts, Fig. 3, and project at right angles to the doors when moved to release the bolts, Fig. 4 Each handle 26 has legs 27 extending at right angles thereto and carrying pintles 28 engaging holes in the bolt 19. The legs 27 pivot about the edge 31 of a casing aperture 30, and are notched to receive said edge in the closed position. A spring 22 tends to force the notches into engagement, and also to hold the handle in the open position, Fig. 4. A spring- pressed plunger 32 may assist in holding the handle in the open and closed positions.
Patent GB-1434767-A (GB)
Title: Biological indicator and method of producing it
IPC: C12Q1/22
Filed: 1973-06-06
Abstract: 1434767 Micro-organisms for testing sterility KOMBINAT MEDIZIN-UND LABORTECHNIK VEB 6 June 1973 [6 June 1972] 27061/73 Heading C6F An apathogenic spore earth is separated by flotation into a germ suspension and a solid residue, the suspension being removed and dried for use as an indicator for testing the efficiency of ethylene oxide sterilizers. The flotation liquid may be water, alcohol, acetone or a salt solution and the suspension may be heated in water at over 60‹C for a short time and/or treated with a chemical sterilizing agent, to kill less resistant germs before separation, which may be by filtration. The indicator may be prepared by pipetting the suspension into a plastics tube and drying at room temperature or at about 40‹C, and the dried micro-organisms may be covered with a gas-permeable layer, e.g. of albumin, after which the tube may be sealed and packed in a gaspermeable envelope, together with a chemical indicator, e.g. bromo cresol purple.
Patent GB-173068-A (GB)
Title: Improvements in and relating to feed water heaters
IPC: F22D1/32
Filed: 1920-09-23
Abstract: 173,068. British Thomson - Houston Co., Ltd., and Samuelson, F. Sept. 23, 1920. Surface condensers.- A feed-heater of the surface type supplied with low pressure steam is provided with compartments for the cooling of contained air and condensate bounded by a baffle plate 4 and weir 7. Condensation water is held back by the baffle 4 under which it passes to the weir 7 and the outlet. Contained air passes through apertures 6 above the baffle into the compartment 13 in which it is further cooled by the ends of the cooling tubes 12.