baber/WOPTO huggingface dataset:
Patent GB-781441-A (GB)
Title: Improvements in and relating to safety devices for internal combustion engines
IPC: F02D17/04
Filed: 1952-03-20
Abstract: 781,441. Engine stop-gear. HIBBERD & CO., Ltd., F. C., and POTTS, G. E. Dec. 3, 1953 [March 20, 1952], No. 7227/52. Class 122 (4). A safety device for an internal combustion engine comprises a waterproof housing 1 for immersion in the liquid used for engine cooling, scrubbing or flame-proofing purposes and having therein a spring-loaded plunger 5 retained in position, under normal working conditions, by fusible pellets 3, 4 which, in the event of an abnormal temperature occurring in the housing 1, melt and allow the plunger to move and by means of a cable 8 cut off the fuel supply to the engine. The cable passes through a bore in the plunger and has a retaining nipple 9 held in a ferrule 15 abutting the end of a shank 7 formed on the plunger. The fusible pellets 3, 4 are held, under normal conditions, between a shoulder 6 on the plunger and an end flange 12 of a tube 13, fitted in the housing, by a spring 10 compressed between the outer end of the plunger and a plug (not shown) in the housing end. When the pellets fuse the melted material escapes through ports in the plunger. In a modification, the shank 7 is surrounded by a non-fusible collar abutting the flange 12 and secured to the shank by a pair of fusible cotter pins that are loaded in shear by the spring 10. The invention is particularly applicable to compression ignition oil engines having watercooled flame traps for the exhaust gases.
Patent GB-988831-A (GB)
Title: Apparatus for controlling the pressurization within a sealable enclosure
IPC: B64D13/04
Filed: 1963-02-22
Abstract: 988,831. Valves. BENDIX CORPORATION. Feb. 22, 1963 [March 9, 1962], No. 7286/63. Heading F2V. [Also in Division G3] A pressure regulating valve controlling the flow of fluid to a pressure responsive seal of a capsule comprises a valve member 49 loaded by a spring 50 through a piston 52 subjected to the downstream pressure in a passage 59. The piston also co-operates with a member 56 secured to the valve member 49 to relieve excess pressure in the passage 59 which forces the piston 52 away from the member 56. A pressure regulating valve 34 is shown in an inoperative position, being held closed by a spring 35 and fluid pressure at the inlet 31, but is rendered operative on movement of a member 39 to the left which compresses spring 36 and allows a piston 38 to open the valve through a rod 39.
Patent GB-322967-A (GB)
Title: Improvements in air filters
IPC: B01D45/08
Filed: 1929-03-06
Abstract: 322,967. Wittemeier, H. March 6, 1929. Dust-collectors.-Dusty air is passed through a series of separating compartments the capacities of which successively increase and then diminish, while the areas of the openings connecting the compartments at first diminish and then increase. The compartments may be formed by plates b corrugated in circles and separated by perforated plates c, the whole surrounding a suction pipe a slotted and fitted with a throttle k. The variations in chamber capacity are effected by varying the angles of the corrugations talcing the radial distances of the compartments also into consideration. The plates b are formed with flanges b<1> arranged to give relatively large inlets, and with rims c<1> at their innermost parts giving large outlets and forming dust traps; the perforations give passages of intermediate areas.
Patent GB-599502-A (GB)
Title: Improvements in or relating to power plants
IPC: F02B71/06
Filed: 1945-03-23
Abstract: 599,502. Servomotors. SULZER FRERES SOC. ANON. March 23, 1945, No. 7394. Convention date, March 30, 1944. [Class 135] [Also in Groups XXVI and XXVII] A power plant comprising a compressor and a precompressor, each separately driven, has means which in accordance with a service factor of the precompression will limit in at least one direction the range of adjustment of the output regulating means of the power unit driving the compressor. A free piston power gas producer, Fig. 3, having a combustion cylinder 13 and compression cylinders 12, supplies combustion gas to a useful output turbine 14, which may drive a generator or a ship's propeller, and a turbine 4 which drives a precompressor 1. The latter supplies air to the free piston engine. A pump 30 supplies pressure medium to a pipe 31, the pressure being under the control of a centrifugal governor 20 by means of a throttle valve 32. The pressure is communicated through pipe 28 to the face 29 of the control valve 24 of a servomotor 21 which operates the fuel regulating valve 3 through a lever 26. The return of valve 24 to the non-operative position is effected by a cam surface on the lever 26 through a spring 25. A valve 33 which is subject to the pressure in a pipe 35 communicating with pipe 28 shuts off the latter from pipe 31 when the pressure exceeds a certain value, so that further increase of pressure in pipe 31 cannot result in a corresponding increase in pressure in pipe 28. Any pressure medium leaking from pipe 31 to pipe 28 escapes through pipe 45. When the pressure in pipe 31 falls again, the leakage from pipe 28 enables the pressure in the latter to fall correspondingly, so that valve 33 rises to restore communication. If the pressure falls below a certain minimum, piston 34 makes contact with valve 24, and further fall of pressure has no effect on the latter, which is now under the control of springs 25 and 37 only. The upper and lower limits of the control range are adjusted in accordance with the pressure of the precompressed air by a pressure-sensitive capsule 43 which varies the loading on springs 36 and 37 by means of cams 40, 41. In existing plants with hydraulic transmission of the regulating impulse, the device shown in Fig. 4 may be used. As before, the pressure in pipe 31 is under the control of governor 20 and pipe 28 is, in this case, the connection to the control valve of some known type of servomotor. Pressure medium is supplied through pipe 51 and discharged through pipes 52. Under normal conditions the pressure in pipe 28 is equal to that in pipe 31. If the pressure in pipe 31 rises above the upper limit, piston 47 makes contact with valve 46 and prevents further pressure rise in pipe 28. Piston 48 performs a similar function in respect of the lower limit. As before, the limits of the control range are set by cams 40, 41 under the control of the precompression pressure. The interval between the upper and lower limits may be altered by means interposed between the cams 40 and 41.
Patent GB-376801-A (GB)
Title: Improvements in or relating to projector screens and method of preparing and treating the screen
IPC: G03B21/62
Filed: 1931-03-11
Abstract: 376,801. Coated fabrics. TRANSLUX DAYLIGHT PICTURE SCREEN CORPORATION, 247, Park Avenue, New York, U.S.A.-(Assignees of Newman, D. F. ; 185, Southside Avenue, Freeport, Long Island, New York, U.S.A.) March 11, 1931, No. 7482. Convention date, May 13, 1930. (Class 140.] A projection screen comprises gelatinous material, glycerine and a liquid associated with an agent, e.g. zinc oxide, having combined light-diffusing and curing properties. The screen may also comprise a germicidal &c. agent, e.g. sodium fluoride, boric acid, sodium salicylate or phenols ; an additional curing agent such as formaldehyde, acrylic aldehyde, acetaldehyde or a copper salt, e.g. cupric sulphate; a light-filtering agent, e.g. cobalt blue; and an additional light-diffusing agent, e.g. barium sulphate, antimony oxide, zinc sulphide, silica or ground glass. The screen may be formed by casting the materials upon a heated matrix table which may be marked, grooved or etched, and is furnished with a retaining wall equal in height to the thickness of the screen. Reinforcing material, e.g. a sheet of fabric such as silk, may be incorporated in the screen. The additional curing agent may be applied to the formed screen, e.g. by spraying.
Patent GB-856706-A (GB)
Title: Improvements in gear pumps
IPC: F04C2/08
Filed: 1959-03-04
Abstract: 856,706. Gear pumps. DE MICHELIS, R. March 4, 1959 [March 5, 1958; May 2, 1958], No. 7508/59. Class 110 (2). The pump, for pulverulent materials, comprises gears 19, 20 of flexible material on shafts 21, 22 which are coupled by external gearing 5, 6, 7 (Fig. 2, not shown). Cooling chambers 29, 30 may be provided. The material being pumped may be pressed into the inlet 23.
Patent GB-717902-A (GB)
Title: Improvements in or relating to valves for wind instruments
IPC: G10D9/04
Filed: 1950-03-25
Abstract: 717,902. Valves. KLEINHENN, P. V. March 25, 1950, No. 7528/50. Class 135. [Also in Group XXXVIII]  A valve for a saxophone or Bochm flute consists of a hinged cover 3, Fig. 1, and a pad 1 mounted on and movable relative to the cover to provide an airtight closure. A spring cup 4, Fig. 2, is secured by a spring 5 held in position by a washer 7 on a conical-headed pm 6 threaded into the cover 3. A plate 2 carrying the pad 1 clips on to the spring cup 4 and is free to pivot on the pin 6. A sound reflecting disc is secured to the underside of the pad 1. Where simultaneous closure of two connected valves is required, adjustment is made by rotating the pin 6. Specification 590,246, [Group XXXVIII], is referred to.
Patent GB-1529892-A (GB)
Title: Production of olefin oxides
IPC: C07D303/04
Filed: 1976-02-26
Abstract: 1529892 Production of olefin oxides UNION CARBIDE CORP 26 Feb 1976 [27 Feb 1975 29 Dec 1975] 07584/76 Heading C2C [Also in Division C3]  A catalytic liquid phase process for the production of olefin oxides comprises admixing an olefin and hydrogen peroxide in the presence of an arsenic catalyst which is provided to the reaction as either elemental arsenic, an arsenic compound or mixtures thereof, the arsenic content of said compound being present in catalytically active amounts, said compound being essentially free of tungsten, molybdenum, vanadium and chromium, and the temperature of admixture being in the range of 25 to 200 C. The reaction is preferably conducted in an essentially oxygen-free atmosphere. Generally, a conventional inert organic solvent is used as the reaction medium.
Patent GB-1222095-A (GB)
Title: Improvements in or relating to the production of a cyanuric chloride solution
IPC: C01C3/00
Filed: 1968-02-16
Abstract: 1,222,095. Purifying cyanuric chloride. AGRIPAT S.A. 16 Feb., 1968 [17 Feb., 1967], No. 7599/68. Heading C1A. A solution of cyanuric chloride is made by condensing crude gaseous cyanuric chloride produced by the trimerization of cyanogen chloride to a liquid, flashing off chlorine, cyanogen chloride and cyanuric chloride gas therefrom, absorbing the degassed liquid cyanuric chloride in a first solvent, absorbing the flashed-off gases in a second solvent with which the gases will not react and which is less absorbent of cyanuric chloride than the first solvent, stripping from this solution all absorbed gases except cyanuric chloride, transferring the cyanuric chloride from the second solvent to a further portion of the first solvent, and combining this solution of recovered cyanuric chloride with the solution of liquid cyanuric chloride in the first solvent. In one embodiment, the cyanogen chloride content of the gases flashed off from the condensed liquid cyanuric chloride is trimerized before absorbing the gases in the second solvent. Apparatus is described. In an example, cyanogen chloride is trimerized to cyanuric chloride at 300‹ C. and condensed to liquid at 150‹ C. Toluene and carbon tetrachloride are used as first and second solvent, respectively. The first solvent may alternatively be monochlorobenzene.
Patent GB-253985-A (GB)
Title: Improvements in or relating to the ornamentation of walking sticks, umbrellas, cigaror cigarette tubes or holders, or pipe stems
IPC: A45B9/00
Filed: 1925-03-20
Abstract: 253,985. Nanke, E. F. March 20, 1925. Ornamenting. - Umbrella handles, walking- sticks, cigar or cigarette holders, or smokers' pipes are ornamented by clamping discs of bright metal and bone, ivory, or other material of any desired colour between opposing faces of two parts of the article. In the cigarette holder shown in Fig. 1, four metal discs C and three discs D of ivory or other material are slipped or threaded over a stem B fixed in the part A, by which the parts A, A' of the holder are secured together.
Patent GB-453506-A (GB)
Title: Improvements relating to motor vehicle screen wipers
IPC: B60S1/34
Filed: 1935-03-12
Abstract: 453,506. Windscreen-cleaners. LUCAS, Ltd., J., and BIRD, W. G., Great King Street, Birming- ham. March 12, 1935, No. 7658. [Class 138 (i)] The wiper arm is in two parts a, c of channel section which are clamped together by a screw g inserted through a plate e. The plate is secured to the part a by means of projectionsf entering slots in the part. The plate serves to anchor one end of the spring h which presses the wiper against the screen. The part a of the arm is secured to the spindle b by means of an apertured cylindrical member k, the ends of which engage holes in the sides of the part a.
Patent GB-924882-A (GB)
Title: Heat treatment of metals
Inventor: JOHNSON LEONARD TERENCE
IPC: C22B5/04
Filed: 1961-03-03
Abstract: A process for the stress relief of welds in steel pipes of such diameter and wall thickness that they have a weight of at least 45 lbs. per foot length, comprises applying to the weld metal an exothermic mixture of such composition that when burnt in free oxygen it generates 3000 to 6000 B.T.Us. per pound, the mixture being used in such amount that the temperature of the weld metal is raised at least to the critical temperature, firing the mixture and allowing it to cool in situ.  A sleeve of heat-resisting material may be inserted between the weld metal and the exothermic composition.  Specification 924,881 is referred to.
Patent GB-648244-A (GB)
Title: Improvements in and relating to the manufacture of yeast-containing food products
IPC: A23J3/20
Filed: 1946-03-14
Abstract: A food is made by subjecting yeast to autolysis or plasmolysis in a hypertonic medium, e.g. by the employment of sodium chloride or an alkali metal phosphate, mixing the so-treated yeast with starch, e.g. a decorticated whole cereal such as wheat, or by cooking a mixture of yeast and a decorticated whole cereal under pressure in an autoclave, e.g. for 20 min. at 2 kg./cm.2, and subjecting the mixture to cooking and drying under mechanical pressure by passage between heated rollers.  The Specification as open to inspection under Sect. 91 comprises also the stirring of yeast into strictly carbohydrate basic products, e.g. cremoses obtained from wheat or products mediocre in nitrogen and vitamins, in a cold state, before passage of the mixture over heated rolling cylinders for cooking and drying the mixture and for bursting the cells of the yeast and the ingredients mixed therewith.  This subject-matter does not appear in the Specification as accepted.
Patent GB-289236-A (GB)
Title: Device for varying the power in lever driven bicycles
IPC: B62M1/24
Filed: 1927-03-24
Abstract: 289,236. Smith, S. F. March 24, 1927. No Patent granted (Sealing fee not paid). Drawings to Specification. Control mechanism.-In driving-mechanism for bicycles, of the type comprising treadles and reciprocating wires, or chains, the gear is varied by altering the points of attachment of the reciprocating wires &c. to the treadles by means of Bowden or like control wires, which are connected to a drum mounted in a hollow cylinder attached to the upper frame tube, the drum being rotated by a handle, which is adapted by its own resilience to engage slots in the end closure of the cylinder, so as to be locked in adjusted position. Specification 200,385 is referred to.
Patent GB-251077-A (GB)
Title: Improvements relating to doors and windows
IPC: E05D15/50
Filed: 1925-03-26
Abstract: 251,077. Bottomley, W. March 26, 1925. No Patent granted (Sealing fee not paid). Hinges arranged to act alternatively at either side of door and the like.-Pairs of pivots are provided on each of two or more opposite edges of a door or window each pair e.g. b<1>,b<1> being connected as by a pivoted link r for simultaneous. operation and the corresponding links b<1>, b<11> of two pairs being connected by a floating or pivoted link f so as to be alternatively engaged with or disengaged from hinge sockets h<1>, h<11> In the withdrawn position a recess &c. v' in each pivot is engaged by a spring-pressed catch c<1>, the door having been opened sufficiently to disengage the catch from a stop m<1> on the frame. The rod f is acted on by springs t<1>, t" and when not pivoted bears on two upwardly inclined faces g' in the cavity g. The pivots are tapered at the ends and are operated by handles on squared spindles passing through the links r.
Patent GB-219933-A (GB)
Title: Process for making bolts and the like and dies for bolt making or similar machines
IPC: B21K1/44
Filed: 1924-03-31
Abstract: 219,933. Shelly, T. P., (Assignee of Simpson, F. J.). Aug. 3, 1923, [Convention date]. Forging bolts; dies.-A head is formed on a stock bar 35, held in grinpers 34, by a die 13 which is advanced, relatively to the grippers, to enclose the projecting end of the bar and then a plunger 16 is advanced to upset the metal into the die. Both die and plunger are detachably mounted, for changing sizes &c., on spring holders 12, 27 carried by the reciprocating slide of the machine. The springs 21, 25 yield when the die contacts with the grippers and the weak spring 30 yields, when the bar contacts with the punch, until this is advanced by the adjustable stop 31. The punch, during the return of the slide ejects the bolt from the die which is preferably slightly flared. The diameter of the punch may be almost as great as that of the head made and in this case the die cavity may be slightly larger than the head formed. Springs 19 are provided to reduce risk of damage to the machine if the die meets an obstruction. In a modification, the spring 30 is independently adjustable.
Patent GB-431926-A (GB)
Title: Improved fastening means for scaffolding members
IPC: E04G7/18
Filed: 1935-03-15
Abstract: 431,926. Scaffold clamps. DOUGALL, G. J., 299, South Ridge Road, Durban, South Africa. March 15, 1935, No. 8165. [Class 20 (ii)] A scaffold clamp comprises a U-shaped member A embracing one pole B and wedges E passing transversely of the pole through shaped apertures in the limbs of the member. The wedges pass in opposite directions across the limbs, which are recessed at their upper ends to receive the other pole C. An intermediate member with hook - shaped end D may be used between the wedges and the pole B to retain the other pole in the recesses.
Patent GB-563275-A (GB)
Title: Oxidation catalyst
IPC: B01J23/644
Filed: 1942-06-15
Abstract: 563,275. Catalytic agents. CARBON MONOXIDE ELIMINATOR CORPORATION. June 15, 1942, No. 8171. Convention date, June 13, 1941. [Class 1 (i)] A catalyst for oxidizing exhaust gases of internal - combustion engines consists of platinum and palladium, preferably in equal proportions, together with a preferably larger amount of an oxide of cobalt, iron, nickel, manganese, or copper. It is preferably deposited on a porous refractory carrier such as alumina.
Patent GB-420224-A (GB)
Title: Improvements in or relating to dentists' appliances
IPC: A61B1/06
Filed: 1933-03-17
Abstract: 420,224. Hinges. KOHLER, W., 10a, Zweibr³ckenstrasse, Munich, Germany. March 17, 1933, No. 8220. Convention date, Aug. 8, 1932. [Class 65 (ii)] [See also Groups VI, XI, XXXV, and XXXVI] In order to permit adjustment of the driving belt of a dynamo the supporting arm 41 may have a pivot joint, Fig. 8, provided with two serrated discs 46, 47, of which one, 46, is connected to the cup 37 by a pin 49 whilst the other, 47, is connected by a pin 50 to the arm 41 and to the head 48 of a clamping bolt carrying a wing nut 51.
Patent GB-1454566-A (GB)
Title: Rotary switches
IPC: H01H19/11
Filed: 1974-02-22
Abstract: 1454566 Cam-operated switches H L NAIMER 22 Feb 1974 [23 Feb 1973] 8298/74 Heading H1N A rotary switch comprises a cam 2 acting on plungers 5 carrying bridging contacts 6 mating with fixed contacts 8, and a star-wheel 14 mounted coaxially with cam 2 in the same housing 1 and coupled to cam 2 for rotation therewith, spring loaded detent elements 13 being mounted in grooves 11, 12 for cooperation with star-wheel 14. Elements 13 have slots (15), Fig. 3 (not shown) engaging rails (16), to prevent elements 13 moving in a direction parallel to the axis of rotation of the switch.
Patent GB-617258-A (GB)
Title: Improvements in dí¬c reinsertion circuits, more particularly for television receivers
IPC: H04N5/16
Filed: 1946-03-18
Abstract: 617,258. Television. MARCONI'S WIRELESS TELEGRAPH CO., Ltd. March 18, 1946, No. 8347. Convention date; March 17, 1945. [Class 40 (iii)] A D.C. reinsertion circuit comprises a unilaterally conducting device and a low-pass filter arranged so that received signals (e.g. television signals) are applied to said device through said filter whereby the D.C. restoration takes place substantially independently of highfrequency noise signals. Amplified television signals (e.g. as shown by graph a, Fig. 2) from a video amplifier 5, Fig. 1, are applied to the control grid 11 of a cathode-ray tube 13 through a capacitor 10, the necessary D.C. correction voltage developed by the diode 15 and associated circuit being also applied to grid 11 as a controlling bias. When pulses are present in the received signal (such as shown by graph a<1>, Fig. 2), the D.C. level, instead of being held at the level B (determined in conventional manner with reference to the average maximum level of the horizontal synchronizing pulses) would, in the absence of the low-pass filter comprised of resistors 17, 19 and capacitors 21, 23, be depressed to a level such as D until the area of the wave a<1> above level B is equal to that of the wave a. The wave a<1> which is in effect equal to a combination of low-frequency components and a number of high harmonics has these harmonics removed by the low-pass filter so that the resultant signal voltage reaching the diode during the occurrence of noise pulses is of the form shown in graph b which results in only a very slight departure of the D.C. level from the desired level B. Separation of the synchronizing pulses from the image signals is effected by means of the cathode coupled valves 31, 33 which are arranged to clip the applied signal between the levels E and F to provide controlling signals for application to the deflection circuits 35.