baber/WOPTO huggingface dataset:
Patent GB-556287-A (GB)
Title: Improvements relating to electric follow-up mechanism
IPC: G05D3/12
Filed: 1942-04-29
Abstract: 556,287. Positional control systems. PRECISION DEVELOPMENTS CO., Ltd., and OLAH, G. April 29, 1942, No. 5727. [Class 40 (i)] [Also in Groups XXXIV and XXXVII] In a follow-up system, the servomotor is provided with an electromagnetic brake having a permanently energized winding normally applying the brake which is released by an opposing winding, or one of a pair of such windings in the case of a split field reversible motor, when the motor is started, the brake being controlled directly by the follow-up contacts. If the supply fails, the brake releases and the driven member, if spring biased, takes up an extreme position. In the arrangement shown in Fig. 2 the operating handle rotates shaft 6, sun-wheel 7, and planet gearing mounted on member 9 carrying a contact A1 into engagement with one or other of the fixed contacts C1, D2. The motor 1 rotates the controlled member, which may be a rudder shaft, and also the ring member 8 of the gearing which restores contact carrying member 9 to its normal position. The brake comprises pivoted arms B2, B3 normally urged against the shaft of the motor 1 by a permanently energized winding B, but contact member 9 connects an opposing winding BC or BD in parallel with field winding C3, D3 to release the brake. The motor may have a series shunt or compound field. Figs. 7 and 8 (not shown) comprise a modification using a follow-up switch described in Specification 556,288 but provided with a biasing spring to prevent undesired circuit connections. Fig. 9 (not shown) comprises a motor with a single field winding and a single " opposing " winding controlled by a combined follow-up and reversing switch also described in Specification 556,288. Brake construction, Figs. 4 and 5.-An extension 10 of the motor shaft carries a brake drum comprising a magnetic disc DM and friction discs DF1, DF2 of slightly larger diameter than DM to prevent reduction of the air-gap to zero and consequent adherence of the brake shoes due to remanent magnetism. The brake shoes BM of magnetic material carrying friction pads, not shown, are pivoted at P to members B4 forming part of the magnetic circuit carrying the windings B, BD, BC. The shoes are statically balanced on their pivots, slight bias towards the drums being' provided by springs SP. The friction pads may be of oil-impregnated porous metal or a mixture of graphite and metal whereas the discs DF1, 2 may be of non-metallic material such as phosphor bronze or an alloy of copper and nickel or beryllium. The friction surfaces may be bevelled or grooved.
Patent GB-291426-A (GB)
Title: Improvements in lock-nuts
IPC: F16B39/14
Filed: 1928-02-23
Abstract: 291,426. Montupet, M. June 3, 1927, [Convention date]. Void [Published under Sect. 91 of the Acts]. Lock nuts.-The lock nut 6, made of an elastic metal, is split at 7 from its central hole to its periphery and is screwthreaded to the same pitch as the screw thread of the bolt 3, but on a smaller diameter. The lock-nut is sprung upon the bolt and locks by transverse pressure on the bolt.
Patent GB-360774-A (GB)
Title: Improvements in or relating to apparatus for the electrolysis of liquids under pressure
IPC: C25B9/17
Filed: 1931-02-25
Abstract: 360,774. Electrolytic cells. MENTZEL, A., 2, Nordsternstrasse, Schoneberg, Berlin. Feb. 25, 1931, No. 5927. [Class 41.] A cell b for the electrolytic decomposition of water under pressure, which is built up of members with abutting joints c, is surrounded by a pressure vessel a filled with an insulating hydrocarbon composition, such as asphalt or paraffin wax, which is liquid at the working temperature and in this state is either lighter than or heavier than the electrolyte so that any escaping electrolyte is removed from the outside of the cell. The electrolyte if heavier than the filling liquid may be removed by a cock e. The electrolyte is circulated by pipes g, h between the cell and a vessel f.
Patent GB-834680-A (GB)
Title: Improvements in multi-mechanical input devices
Inventor: WOOD FRANCIS HAROLD
IPC: B64C13/24
Filed: 1957-02-21
Abstract: 834,680. Linkwork. SMITH & SONS (ENGLAND) Ltd., S. Feb. 21, 1958 [Feb. 21, 1957], No. 5955/57. Class 80 (3). A linear-motion transmitting device, particularly for an aircraft control system, comprises a circular array of three input rods 7, 8, 9 whose ends co-operate with an annular race of tapered rollers 10 in the face of a spring- loaded apertured piston 4 on the single output rod 5. The dimensions of the input rods and rollers are such that whichever rod is foremost passes through the rollers and piston and in doing so closes up the rollers so that the output rod 5 always takes up the position of the intermediate input rod. The ends of the input rods are tapered as shown at 9 in Fig. 2 so that one rod occupies the space of two rollers. As shown, rod 9 has passed through the rollers 10 and through aligned holes in the piston 4 and roller-retaining plate 11, and the end of rod 7 is in contact with two adjacent rollers 10 so that the position of the rod 5 is determined by that of the rod 7. The rod 5 may actuate an aircraft control surface, the rods 7, 8, 9 being connected to three independent servo systems so that the device acts as a safety device guarding against a run-away or a locking of any one system.
Patent GB-434127-A (GB)
Title: Improvements in building and refractory bricks or blocks
IPC: E04B2/14
Filed: 1934-02-23
Abstract: 434,127. Building-blocks. HAMSON, L. E., Rosemount, Brixworth, Northamptonshire, and BRIXWORTH BRICK & TILE CO., Ltd., St. Stephen's House, Westminster. Feb. 23, 1934, No. 6029. [Class 87 (i)] [See also Group XII] Bricks and blocks for buildings, ovens, kilns, and furnaces are formed by extrusion with a large number of relatively small and closely spaced apertures arranged so that the separating walls E are uniform in thickness. The apertures may be square, oblong, triangular, hexagonal, or other shape, and the outer wall F may be thicker than the walls E. The material may be clay, marl, shale, or fireclay.
Patent GB-367189-A (GB)
Title: Improvements in and relating to electric circuit controlling devices
IPC: F25B49/02
Filed: 1931-02-26
Abstract: 367,189. Thermal switches ; snapaction switches ; electrically tripped switches; control of A.C. motors. BRITISH THOMSON-HOUSTON CO., Ltd., Crown House, Aldwych, London.-(Assignees of Hutt, L. P. ; Story Avenue, Schenectady, New York, U.S.A.) Feb. 26, 1931, No. 6092. Convention date, Feb. 28, 1930. [Classes 38 (iii) and 38 (v).] A switch for controlling a refrigerator of the general 'kind described in Specifications 282,074, [Class 38 (iii), Electric motor control systems &c.], and 363,121, and comprising a fixed contact 10 and a movable contact 11 pivoted at 21<1>, is operated on and off with a snap action by the expansion and contraction of syphon bellows 26 according to the temperature of the refrigerator, and may also be moved off by the counterclockwise rotation of a member 21 when this is released by the movement to the right of a bimetallic strip 20 ; this latter movement may be effected by rotation of a handle 25 and shaft 22 carrying a finger 23 or by the heating of the strip by an overload current in the circuit of the refrigerator motor ; movement of the handle 25 in the reverse direction causes the finger 23 to engage an inclined surface on the member and move this back till it is re-engaged by the bimetallic strip. The bellows 26 acts on a lever 14 against the action of a spring 15, the tension of which is adjusted by movement of a lever 16 about its pivot 17 by means of a screw 18 with a knob 19. The control circuits for the refrigerator are similar to those disclosed in Specification 367,243.
Patent GB-540603-A (GB)
Title: Process of and apparatus for high vacuum distillation
IPC: B01D1/22
Filed: 1940-04-05
Abstract: 540,603. Condenser and evaporater in structural combinations. POTTS, H. E. (Distillation Products, Inc.). April 5, 1940, No. 6142. [Class 32] [Also dn Groups XXVI and XXVIII] In processes for high vacuum short path distillation the working fluid of the ejector con densation pump producing the vacuum is vaporised by radiation from the heated surface vaporising the distilland and by the latent heat of condensation of the distillate. The still comprises a closed vessel 4, 6 provided with a water jacketed annular chamber 46 for condensing the working fluid and a passage 72 leading to the fore vacuum pump. Three concentric rotating plates comprise respectively a heated plate 18 having a central depression 20 to which the distilland is fed by a branched pipe 26, 60 from a stationary pipe 56; a central plate 24 on the lower surface of which the distillate is condensed while on the upper surface the working fluid, fed through a pipe 48 and cup shaped extension 22, is evaporated; and an upper plate 30 between which and the plate 24 an annular ejection nozzle is formed owing to the centrifugal force so that the vaporised fluid and residual gases in the chamber are ejected into the chamber 46. Annular receivers and draw-offs 62, 66, 64, 68 are provided for the residual distilland and the condensate respectively. In Fig. 2 the plates are stationary, the working fluid is pumped by a pump 110 through line 48 to the top of the central plate 108 while the distilland flows by gravity over the plate 100. Working fluids specified are'diethyl, dipropyl dibutyl, diamyl and dioctyl phthalate, dioctyl sebacate, methyl and ethyl esters of oleic, stearic, and mixed fatty acids.
Patent GB-1334481-A (GB)
Title: Rotary regenerative heat-exchanger
IPC: F28D19/04
Filed: 1972-02-09
Abstract: 1334481 Thermal regenerators LE MOTEUR MODERNE 9 Feb 1972 [15 Feb 1971] 6161/72 Heading F4K In a rotary regenerative heat exchanger for exchanging heat between hot and cold gas flows and comprising a rotary matrix 4 of refractory material, the periphery of the matrix 4 is compressed uniformly by an elastic collar 10 made up of three overlapping arcuate bands (10a, 10b, 10c) connected together by three elastic tension members 12. A heat insulating band 11 is interposed between the matrix 4 and the collar 10. Each tension member 12 is made up of two stirrups 12a, 12b abutting against respective hooks 13b, 13a at the overlapping ends of two neighbouring bands 10b, 10a. The stirrups 12a, 12b are subjected to a force tending to separate them, this force being provided by four sets 14 of spring washers threaded on shafts 15 on the stirrups. The matrix is rotated by a ring gear 21 which is coupled to the matrix through the tension members 12 by locking a peg 22a in a groove 23 of the stirrup 12a. The ring gear 21 has two outwardly diverging flanges (27, 28, Fig. 9) which form a track for a number of circumferentially spaced rollers 29, 30, 31 one of which is fixed on to a drive shaft 32 and is provided with teeth which engage the teeth of the ring gear 21. The drive mechanism is cooled by means of a forced flow of atmospheric air, see arrows 41, Fig. 2.
Patent GB-216928-A (GB)
Title: An improved method of and apparatus for removing and preventing the formation of scale in boilers
IPC: C02F5/10
Filed: 1923-03-03
Abstract: 216,928. Sieff, S. H. March 3, 1923. Extracts, decoctions, and infusions, makings. - A scaleremoving composition is prepared from linseed or other vegetable seed by treating the seed with hot water or steam in a chamber in which the seed is continuously agitated by means operated by the incoming hot water or steam. Seed treated in a cylindrical vessel a is agitated by blades l on a spindle j rotated by inclined vanes m which are acted upon by hot water or steam admitted to the vessel through a pipe q. Partitions b, g at the bottom and top of the vessel have perforations which are covered by sheets of wire gauze or the like. Water may be supplied to the vessel through a pipe o. The composition is taken off through a pipe p. Bristles or scrapers n attached to the rotating spindle! remove obstructions from the gauze on the partition g. When the composition is supplied directly to the boiler, the vessel is enclosed in a casing of sufficient strength to withstand the boiler pressure.
Patent GB-475620-A (GB)
Title: Improvements in or relating to cathodes of thermionic valves
IPC: H01J1/20
Filed: 1937-03-03
Abstract: 475,620. Thermionic valves. TELEFUNKEN GES. FUR DRAHTLOSE TELEGRAPHIE. March 3, 1937, No. 6285. Convention date, March 3, 1936. Addition to 444,844. [Class 39 (i)] In an indirectly heated cathode the emissive surface 5 is formed on the convex sides of a body which in cross-section has the form of a double convex lens with the ends cut off. A ceramic body 1 has a metal layer 4 drawn or deposited thereon and coated at 5 with alkaline earth oxide ; the ends are uncoated and are plane or concave. The body may be a cylinder of the cross-section described or the sides may be curved. The grid 6 and anode 8 supported by rods 7, 9 may follow the curvature of the cathode, and may only be of lengths determined by the angles alpha corresponding to the radii containing the cathode surfaces.
Patent GB-125227-A (GB)
Title: An Improved Clip or like Attachment for Wires or other Stays on Aeroplanes or other Structures.
Inventor: SHIRLEY ERNEST
IPC: B64C3/00
Filed: 1918-04-13
Abstract: 125,227. Shirley, E. April 13, 1918. Wire couplings.-A clip for holding wires or other stays on aeroplanes and other structures comprises two jaws B arranged in a casing A so that the greater the pull in the stay the tighter will be the grip. The jaws have inclined backs bearing against stout pins F in the casing and are given an initial grip by springs E secured to pins J. Teeth G are formed on the jaws to grip the wire or stay C. Pins K on the jaws project through slots in the casing and are engaged and drawn down by hooked levers L, Fig. 2, on a special tool when it is desired to release the stay C. The casing A is pivoted to a screwed shank G. Loose anti-friction sleeves may be provided on the pins F.
Patent GB-1060533-A (GB)
Title: Improvements in or relating to heat transfer devices and to electric lighting fittings incorporating such devices
Inventor: HUBBOLD SYDNEY
IPC: F21V19/00
Filed: 1965-02-15
Abstract: 1,060,533. Clamps. GENERAL ELECTRIC CO. Ltd. Jan. 19, 1966 [Feb. 15, 1965], No. 6390/65. Heading E2B. [Also in Division F4] A device for cooling one member by conducting the heat to a dissipating member, especially for use in lighting fittings with high wattage lamps, consists of a block 12, mounted on a boss 11 carried by a heat dissipating member e.g. a finned casing 1, the block 12 carrying a pivot 19 supporting a pair of jaws 22 connected by a spring producing a snap action both on opening and on closing of the jaws, the jaws having contact projections 25 engaging the pinch seals 15 of an elongated filament lamp 14. Lampholders 17 are mounted adjacent the jaws. In a modification, the pivot 19 is mounted on a metal-cased lampholder secured to the block 11. In a further modification, it is mounted on the end of the lamp housing adjacent to the lamp holder.
Patent GB-208955-A (GB)
Title: Improvements in the nipper-mechanism of combing machines
IPC: D01G19/16
Filed: 1923-03-06
Abstract: 208,955. Heinrich, H. March 6, 1923. Combing-machines.-In a machine of the Heilmann-Nasmith type, the nipper frame 8 is hung on a bolt 10 carried by a frame, 19 mounted on the cylinder shaft 13 and oscillated by a rocking arm 2 and connecting-rod 5. The frame 8 carries the upper jaw 9, the lower jaw 4 being pivoted at 6 and controlled by a spring 26. A fixed bracket 24 carries an adjustable stop 23, which engages a curved surface 21 on the frame 8. A spring 20 maintains the surface 21 and stop 23 in contact. As the nipper point swings forwards, the first part of its motion is concentric with the cylinder shaft. An extension 22 on the frame 8 then contacts with the stop 23 and the frame 8 in its forward movement swings upwards about the bolt 10. The nipper point then travels away from the comb cylinder. Finally the lower jaw 4 comes into contact with an adjustable stop 29 carried by the frame 19 and the nipper mouth is opened as the frame. 8 continues to swing around the bolt 10. The spring 26 is further compressed and the lower jaw moves forward in a straight line to the detaching-rollers 16, 17.
Patent GB-1087835-A (GB)
Title: Glass thermometer and method and apparatus for marking the same
IPC: G01K5/02
Filed: 1965-02-15
Abstract: 1,087,835. Thermometers. S. N. BLACKMAN. Feb. 15, 1965, No. 6470/65. Heading G1D. Thermometers e.g. clinical thermometers are marked with stain markings by depositing on the surface of the thermometer markings of a heat decomposable substance e.g. silver chloride, and then heating the thermometer to cause the substance to stain the thermometer glass giving permanent flush markings. The thermometer is first marked with two fixed points at known temperatures and the desired scale markings are then applied by use of the so called silkscreen process, the screen e.g. of nylon, being stretchable to a limited degree to make the scale thereon correspond with the fixed points. Apparatus is described for marking different faces of the thermometer successively using a flexible squeegee blade moving above the screen, and use of decalcomanias is also described.
Patent GB-566387-A (GB)
Title: Manufacture of insecticidal compositions, and the resulting products
Filed: 1943-04-22
Abstract: An insecticide consists of a mixture of a finely divided or porous diluent with a compound of the formula <FORM:0566387/IV/1> wherein X is chlorine or bromine, R1 and R2 are organic radicals having respectively at least 3 and at least 5 carbon atoms, and wherein R1 and R2 are different from each other or bound by carbon to the CH group.  Examples of diluents are talc, pumice, kiesel, charcoal, &c. Examples of compounds are: (1) phenyl-4 - chlorophenyl - trichlorethane; (2) phenyl - p - tolyl - trichlorethane; (3) 4 - chloro - 41 - docecyl - diphenyl-trichloro-ethane.  The preparation of the last compound is described.ALSO:An insecticide consists of a mixture of a finely divided or porous diluent with a compound of the formula <FORM:0566387/VI/1> wherein X is chlorine or bromine, R1 and R2 are organic radicals having respectively at least 3 and at least 5 carbon atoms, and wherein R1 and R2 are different from each other or bound by carbon to the CH group.  Examples of diluents are talc, pumice, kieselguhr, charcoal, &c.  Examples of compounds are: (1) phenyl-4 - chlorophenyl - trichlorethane; (2) phenyl - p - tolyl - trichlorethane; (3) 4 - chloro - 41 - docecyl - diphenyl - diphenyl-trichloro-ethane.  The preparation of the last compound is described.
Patent GB-147955-A (GB)
Title: Improvements in methods of and apparatus for forming filaments for electric lamps and the like
IPC: H01K3/04
Filed: 1917-05-09
Abstract: 147,955. British Thomson - Houston Co., (General Electric Cb.). May 9, 1917. Making metal fabrics; bending-formers.-Tungsten or other wire for lamp filaments and the like is shaped into zigzag form by bending it around rows of projections carried by an uniformly-rotating shaping-device, the straight portions being successively heated to incandescence while the convolutions are held by the shaping-device. Before being bent around the projections, the wire may have imparted to it a tendency to curl to a curvature approximately to that of the projections, the resilience of the straight portions being destroyed by the heating. As shown, the wire passes from a reel 33, Fig. 1, around a tensioning roller 34 and the rounded edge of an adjustable bar 37, to give the wire a tendency to curl. Thence the wire is led to a tubular guide on the upper end of a lever 21, Fig. 2, which carries the wire around pins 11, 12 on two disks clamped against a replaceable sleeve on the shaft 6. The lever is oscillated by an adjustable crank pin 23 and link 22, and its pivot block 26 may simultaneously be moved up and down in a guide 25 by a link 27, lever 28, and cam 29 so that the filament guide describes a loop around each pin in turn. A contact brush 14 successively engages the insulated pins 12 of one disk, and a return connexion is made to the other disk, so that the lengths of the wire are heated electrically in succession. Stationary fingers 15 strip the wire from the pins. A bell jar enclosing the apparatus is supplied with nitrogen, hydrogen, or a mixture, preferably through a tube 18 delivering the gas by a slot near the incandescent lengths of wire. The shaped wire may be wound on spools.
Patent GB-1427036-A (GB)
Title: Method and apparatus for removing water vapour from high pressure steam lines
IPC: F16T1/34
Filed: 1973-02-09
Abstract: 1427036 Condensing; steam separator FLEXITALLIC GASKET CO INC 9 Feb 1973 [23 March 1972] 6608/73 Headings BIB and BIT [Also in Division F4] A steam trap for particular use in high pressure steam lines comprises a plate 8 having a restrictive orifice 9, on a screen element 13 on the upstream side of the orifice plate providing a multiplicity of flow passages, preferably via a first mesh screen 16, having crosssections smaller than the orifice. A second mesh screen 17 having a larger hole size may be used to space the first mesh 16 from the orifice plate 8. Sealing gaskets, each in the form of a spiral metal strip 18 interposed by a strip of compressible packing 19 are disposed on either side of the orifice plate. In use, the trap is located in a branch pipe, between the steam line and the feed water source, steam collecting in the pipe up to the level of the orifice, before being blown through the orifice into the pipe 2 for subsequent reuse.
Patent GB-820861-A (GB)
Title: Improvements in or relating to pneumatic jacks
IPC: B66F3/25
Filed: 1956-03-02
Abstract: 820,861. Joint-making and piston packing. REGIE NATIONALE DES USINES RENAULT. March 2, 1956 [Sept. 28, 1955], No. 6651/56. Classes 122 (1) and 122 (3). [Also in Groups XXII and XXX] A pneumatic jack comprises a cylinder 1, a base-plate 2, a cylinder head 4, a cover 5 and an integral piston and piston-rod 8, 9 which are all produced by pressure die casting or by the lost-wax process of casting of plastics material or light metal Resilient packing rings 22 are provided to seal the ends of the cylinder and to form buffers for the piston at the ends of its travel. The resilient piston packing ring 10 is provided with an inner portion 14, 16 shaped to engage an annulus 16 in the piston, and a pair of lips 17, 18 which press against the cylinder wall. The piston packing may alternatively be similar to that described in Specification 815,971.
Patent GB-1521412-A (GB)
Title: Determining respiratory path resistance
IPC: A61B5/085
Filed: 1976-02-19
Abstract: 1521412 Determining respiratory path resistance SIEMENS AG 19 Feb 1976 [26 Feb 1975] 06675/76 Heading G1N(E) A device for determining the respiratory path resistance of a patient comprises a mouthpiece 1, a connecting piece 2 and a long hollow tube 4 which has an "inductive-like" or "capacitive-like" impedance (flow resistance). The connecting piece 2 is joined via tubes 7 and 9, as shown, to a piston pump 8 and a microphone 10. The pump 8 serves to subject the respiratory flow to flow pulses at a frequency which is high compared with the patient's respiration rate. The output signal of the microphone 10 is supplied via an amplifier 11, band pass filters 12 and 13 and an adjustable amplifier 14 to a rectifier 15. The rectified signal obtained is transmitted to two low-pass filters 16 and 17 tuned to 5Hz and 0À1Hz, that may supply a chronograph and/or a meter 21. The filters are chosen so that the output of arc (16) is proportional to variations in respiratory path resistance with respiration, and the other (17), is proportional to the time averaged respiratory path resistance. The description refers to other arrangements employing repeatedly curved tubing for the inductive impedance or constructing the tube so that its length is alterable cyclically in a "trombone" like manner.