baber/WOPTO huggingface dataset:
Patent GB-175634-A (GB)
Title: Improvements in telegraph and telephone systems
IPC: H04L25/08
Filed: 1922-02-15
Abstract: 175,634. Ges. f³r Drahtlose Telegraphie, (Assignees of Mayer, E.). Feb. 17, 1921, [Convention date]. Void [Published under Sect. 91 of the Act]. Drawings to Specification. Induction, preventing and minimizing. - In order to protect a telephone or telegraph circuit from low-frequency disturbances such as those due to power circuits, the telephone or telegraph circuit, which is shown as having an earth return, is connected to earth at intervals along its length through impedances which choke any leakage of medium or high frequency signal current but short-circuit the undesired low-frequency current. The impedances may comprise tuned circuits, or simple inductances, or inductances in series with small condensers. An example is illustrated in which the leaks comprise tuned circuits in series with resistances and condensers.
Patent GB-234179-A (GB)
Title: Means for correcting distortion of signals in electric telegraph systems
IPC: H04L25/20
Filed: 1924-02-21
Abstract: 234,179. Hubble, W. C., Higgitt, H. V., Jacob, W. G. R., and Eastern Telegraph Co., Ltd. Feb. 21, 1924. Relays, contact-making, introducing mechanical source of power. In a telegraphic receiving or retransmitting arrangement the energizing of a magnet 3 or 4 by an incoming dot or dash signal respectively serves to interpose a corresponding armature 5 or 6 between one of a pair of reciprocating hammers 20 and the corresponding dot or dash contact-making member 21 or 22 of the receiver or retransmitter. The hammers 20 are actuated by cams 19 on a constantly-driven shaft 18.
Patent GB-396130-A (GB)
Title: Improvements in latch or bolt-fastenings for cold storage and like doors
IPC: E05B63/20
Filed: 1932-02-16
Abstract: 396,130. Sliding-latches. PARTRIDGE, W. H., 63, Charterhouse Street, London. Feb. 16, 1932, No. 4580. [Class 44.] The follower t of a spring-pressed sliding- latch is turned past a dead centre against a stop 5 to set the slam bolt 4. The latch is released by the slam bolt riding over an inclined surface 8 on the striking-plate. The follower boss is cut away at v to allow the handle to fall without withdrawing the latch bolt. A lug 9 on the striking plate and a lug on the latch casing are provided with holes for a padlock. The follower is provided with a roller u.
Patent GB-160641-A (GB)
Title: Improvements in flame-proof boxes for switches, fuses and similar electrical fittings
IPC: H01H9/04
Filed: 1920-02-14
Abstract: 160,641. Henley's Telegraph Works Co., Ltd., W. T., and Gregoire, G. Feb. 14,1920. Drawings to Specification. Boxes and cases.-The joint between a box for switches, fuses, and similar electrical fittings and its cover is rendered flame-proof by a series of grooves in a flange on the box or on the cover or on both which provides expansion chambers for any heated gases seeking to leave the box. Where grooves are provided on both parts they may be in register or in staggered relationship.
Patent GB-1425221-A (GB)
Title: Process for the manufacture of unsaturated aldehydes, acids and nitriles
IPC: B01J23/887
Filed: 1973-01-30
Abstract: 1425221 Oxidation and ammoxidation process STANDARD OIL CO 30 Jan 1973 [9 Feb 1972] 4619/73 Heading C2C [Also in Division B1] Acrolein, acrylic acid, methacrolein and/or methacrylic acid are made by the vapour phase oxidation of propylene and/or isobutylene with an O 2 -containing gas in a molar ratio of O 2  : olefin of 0À5-10 : 1 in the presence of a promoted, reduced catalyst prepared by combining, in any order, molybdenum oxide and, per mole thereof: 0À001-0À2 moles, as reducing agent, of a finely divided metal or metalloid, S, SO 2 , H 2 S, N 2 H 4 .H 2 O, NH 3 , NH 2 OH and/or an organic reducing agent; 0À1-4À5 moles of antimony oxide; and, as a non-oxidizing compound, 0À001-1À0 moles of promoter element which is Cu, B, U, Ti, Sn, Pb, P, Bi, Cr, W, Te, Mn, Re, Fe and/or Ni, and at 250-600 C. The olefin may be replaced by acrolein and/or methacrolein in the making of the acids. Acrylonitrile and/or methacrylonitrile may be made by including 0À05-5 moles of ammonia per mole of olefin in the above process.
Patent GB-941476-A (GB)
Title: Improvements in electric switches
Inventor: SNELL MAURICE SAXON
IPC: H01H13/14
Filed: 1961-02-08
Abstract: 941,476. Retractive switches. DOWTY TECHNICAL DEVELOPMENTS Ltd. May 7, 1962 [Feb. 8, 1961], No. 4655/61. Heading H2B. A snap-action switch housed in a sealed casing 1 is actuated by a lever 52 pivoted at 51 and co-operating with a hollow cam member 41 slidably carried in a tubular housing 26 secured to the housing 2 and externally threaded for mounting the device on a panel by means of nuts 28, 29. Member 41 is carried in plunger 35 and retained therein by a cap 44 and spring 45. Its relative position is preset by screw 46 which is fixed by wax 47 protected by screw 48. When an operating member (not shown) depresses the plunger 35, the end 54 of lever 52 rides up a cam surface 43 and a roller 53 at its other end pivots a lever 21 against spring 24 to depress button 17 against spring blade 14 which snaps under overcentre action of C-spring 18 to move contact 13 from fixed contact 11 to fixed contact 12. Overtravel of plunger 35 causes lever 52 to enter the hollow centre of member 41 without any further angular movement. It is intended that the operating member (not shown) is larger than the plunger 35 such that an inward limit of movement is provided by engagement of the operating member with the bush 33. The entry of lever 52 into casing 1 is sealed by a bellows 55 and bush 33 carries sealing rings 36, 37. The spring 45 restores plunger 35 upon its release and spring 24 restores the levers 21, 52 to the position shown, contact 13 then moving back into engagement with contact 11. The Provisional Specification discloses a different snap-action mechanism wherein the inner end of lever 52 reacts upon a spring- loaded roller to rock a centrally pivoted contact bar; the cam member is integral with the plunger and the operating point of the switch is preset by lateral adjustment of the roller instead of by a screw 46.
Patent GB-1066602-A (GB)
Title: Improvements in and relating to electric circuit or component testing equipment
Inventor: AMESBURY GEOFFREY THOMAS
IPC: G01R31/02
Filed: 1965-02-03
Abstract: 1,066,602. Electric tests. MODERN PRECISION ENGINEERS (FINCHLEY) Ltd. Jan. 19, 1966 [Feb. 3, 1965], No. 4725/65. Heading G1U. A testing device for electric circuits or components comprises a bridge including, in two limbs, resistors R 1 , R 2  or capacitors and in a third limb a variable potentiometer VR1. At the terminals of the fourth limb are connected leads to probes 1, 2 which are placed in contact with the circuit or component under test. The secondary winding T 1  Sec of a transformer is connected across one diagonal of the bridge and the emitterbase of a transistor oscillator VT1 is connected across the other diagonal of the bridge. This oscillatory circuit comprises the primary winding T 1  Pri. of the transformer in series with a capacitor C2 and a Piezo-electric loudspeaker 3 shunted by a resistor R4. Speaker 3 may be replaced by an earpiece. In use the potentiometer VR1 is preset to establish a threshold level of circuit resistance suitable for the type of circuit or component to be tested. When the probes 1, 2 are applied to the circuit or component under test the impedance across them, forming a limb of the bridge, determines the loop gain around the transistor VT1. When this impedance is high feedback is negative and has no effect, but when the impedance is low the feedback is positive and the oscillatory circuit oscillates and the loudspeaker 3 emits an audible signal. If the secondary winding T 1  Sec is connected across the bridge in one sense the oscillatory circuit functions to provide an audible signal whenever the impedance to which the probes are applied is within the preset range, while if the secondary winding is connected in the opposite sense the oscillatory circuit will function to give a signal only when the impedance under test is outside the pre-set range.
Patent GB-178983-A (GB)
Title: Improvements in boilers
IPC: F22B21/18
Filed: 1921-02-10
Abstract: 178,983. Badenhausen, J. P. Feb. 10, 1921. Water-tube boilers.-In a boiler consisting of a lower drum 1 and upper drums 2, 4, 35 connected by banks of tubes 3, 5, 6, 36, furnished with baffles A, B, D, F, G, the baffle B is formed with an offset C and with a rearwardlyextending branch E. The baffles consist of tiles secured by fire-proof current, inserted through openings 17, 18, 19, 38, 39 in the boiler wall, or in the case of the baffles C, D, F, G through apertures M, N, 38<1>, 39<1>, closed by removable caps 37<1> as shown in Fig. 3.
Patent GB-472163-A (GB)
Title: Improvements in or relating to coating paper and the like
IPC: D21H19/34
Filed: 1936-02-17
Abstract: 472,163. Coated fabrics; coating webs. BOYDEN, P. Feb. 17, 1936, No. 4840. [Class 140] Paper, cardboard, mill-board and the like is coated by forming a continuous film of a cellulose ester solution containing an adhesive on the surface of the material and solidifying the film by evaporation of the solvent. The solution may be applied horizontally from a slot-like opening in front of a doctor knife. Where embossed or other surfaces of irregular. contour are coated the doctor knife is omitted and the thickness of the film is regulated by the viscosity of the solution and width of the slot. The cellulose ester solution may contain dyes, pigments, plasticizers such as oils, and fireproofing agents such as triphenylphosphate. The example describes the use of a solution of cellulose acetate in a mixture of acetone, wood spirit and a petroleum distillate boiling between 40 and 100‹ C., containing a mixture of gum arabic and rosin or the synthetic resin sold under the Registered Trade Mark " Rezyl." The products may be used for making containers for food products or for hot liquids. Thin coated tissue paper may be used for wrapping toffees. The Provisional Specification describes also the use in the composition of shellac and plasticizers such as whale oil or turkey red oil.
Patent GB-863235-A (GB)
Title: Improvements in or relating to organic compounds related to heparin
IPC: C08B37/10
Filed: 1959-02-11
Abstract: 863,235. N-desulphonated heparine, N-acyl derivatives and salts thereof. UCLAF. Feb. 11, 1959 [July 5, 1958; Oct. 9, 1958; Dec. 8, 1958; Dec. 17, 1958], No. 4840/59. Drawings to Specification. Class 2(2). The invention comprises heparamine (N-desulphonated heparine), its salts, N-acyl derivatives and their salts. Heparamine is produced by subjecting heparin to the action of an alcohol containing 1-6 carbon atoms, reacting the resulting ester with an alkali metal base, preferably at ambient temperature, and recovering heparamine, e.g. by precipitation of the salt with a water-miscible organic solvent and passing the salt through an ion exchange resin. The N- acylated derivatives may be obtained by treating heparamine with an acylating agent in an aqueous solvent in the presence of an organic or inorganic base. The acylating agent may be an aliphatic, alicyclic, araliphatic, heterocyclic or aromatic carboxylic acid, halide or anhydride or a sulphonic acid. The heparamine may be converted to heparin by treatment with chlorosulphonic acid. Exemplified heparides are the N- benzoate, the N-p-nitrobenzoate, N-3, 5-dinitrobenzoate, N-p-acetoxybenzoate, N-3, 4, 5-trimethoxybenzoate, N-2, 4-dichlorophenoxyacetate, N-phenylethylacetate, N-tosylate and N-#-naphthoylate of heparamine.
Patent GB-978263-A (GB)
Title: Improvements in or relating to nuclear fuel elements
IPC: G21C21/06
Filed: 1961-02-10
Abstract: 978, 263. Nuclear fuel elements. MITSUBISHI ATOMIC POWER INDUSTRIES Inc. Feb. 10, 1961 [Feb.12, 1960], No. 5072/61. Drawings to Specification. Heading G6C. A nuclear fuel element is made by filling a cladding tube with powdered nuclear fuel material, closing its ends, and subjecting it to a number of cold swaging operations, each operation causing a reduction of not more than 8% of the cross-sectional area of the tube, to reduce the cross-sectional area progressively until the bulk density of the fuel material reaches a value above which the wall of the tube is decreased in thickness. For a stainless steel cladding tube containing powdered uranium dioxide and having an external diameter of 12 mm. and a thickness of 0. 5 mm., the wall thickness increases until the core of uranium dioxide powder becomes higher in compressive strength than the cladding tube when the wall thickness starts to decrease, this occurring when the crosssectional area has decreased by approximately 20% and the bulk density increased to approximately 80% of theoretical maximum density. Hot swaging promotes greater densification and sintering of the nuclear fuel powder and is more effectively performed after the tube has been further cold swaged to increase the bulk density to the maximum possible value by cold swaging. In the example quoted above, this is about 90% of theoretical maximum density. After heating the filled tube to 1100‹C. for 15 min. and subjecting it to one hot swaging operation, the bulk density reached 94% of theoretical maximum density. A second hot swaging operation, however, caused the uranium dioxide compact to tend to collapse and its bulk density fall to less than 92% of theoretical maximum density. The thickness of the cladding tube was maintained throughout within the limits of Œ0. 02 mm. and structural defects such as cracks in the tube prevented. Besides uranium dioxide, plutonium dioxide or thorium dioxide or mixtures of these may be used as the powdered fuel material.
Patent GB-218954-A (GB)
Title: Improvements relating to compensators for railway signalling apparatus
IPC: B61L7/02
Filed: 1924-02-28
Abstract: 218,954. Kershaw, A. G., and Westing- house Brake & Saxby Signal Co., Ltd., (Assignees of Saxby & Farmer (India), Ltd.). July 23, 1923, [Convention date]. Wire and like compensators.-A compensator for a two-wire transmission system comprises a pair of weighted levers 6 pivoted on a pin 5 and each carrying a pulley 10 over which the transmission wire is passed. Each lever 6 carries a pivoted link 12 and these are connected by a link 14 provided with grips 16 which engage the sides of a pivoted bar 17. As both wires expand or contract, the levers 6 move similarly and the grips move freely along the bar 17. During operation of a signal, the levers 6 tend to move oppositely, thereby causing the link 14 to rock and under these circumstances the grips 16 prevent movement of the levers 6, thus permitting movement of the signal.
Patent GB-846237-A (GB)
Title: Improvements in or relating to jet type burners
IPC: F23D14/64
Filed: 1959-02-13
Abstract: 846,237. Gas burners. NASSHEUER, J., NASSHEUER, A., and HOPFNER, M., [trading as NASSHEUER, INDUSTRIEOFENBAU UND ELEKTROTECHNIK, J.]. Feb. 13, 1959 [Feb. 13. 1958], No. 5160/59. Class 75(1). A gas burner comprises a gas supply pipe 9 opening into a combustion nozzle 3 disposed at the head of an air supply pipe 7 and inserted into a flame tube 2 disposed within a jacket 1, the nozzle being made of heat resistant metal and having at least one machined cylindrical outer surface 12 conforming to the inner cylindrical surface of the flame tube 2. The free end 5 of the nozzle is also machined to conform to the inner surface of the flame tube and the other end 8 of the nozzle is machined to form an inner surface which conforms to the outer surface of the air supply pipe 7. Axial or sloped ribs 11 are formed on the inner surface of the nozzle. The end of the flame tube 2 may be completely open or closed and provided with a small aperture. The cylindrical wall of the flame tube has apertures.
Patent GB-511297-A (GB)
Title: Improvements relating to ball and roller bearings
IPC: F16C13/02
Filed: 1938-02-19
Abstract: 511,297. Ball and roller bearings. WHITTAKER BROS. (ACCRINGTON), Ltd., and DUCKWORTH, J. A. Feb. 19, 1938, No. 5246. [Class 12 (i)] A bearing for wringing and mangling machines comprises race rings J, G, one of which is in two parts press-fitted together, the outer race ring being a press fit in a cup shaped housing K shaped to fit the end frame E of the machine. The casing K has a clearance hole L for the roller shaft C which-carries a-collar N. Spaces M, P, and Q between the parts are charged with grease and the bearing is thus made dirt and damp proof. The collar N or the adjacent surface of the casing K may have grease grooves R.
Patent GB-659437-A (GB)
Title: Improvements relating to electric strobing circuits
Inventor: SCOLES GRAHAM JOHN
IPC: G01S1/02
Filed: 1949-02-25
Abstract: 659,437. Pulse circuits. METROPOLITANVICKERS ELECTRICAL CO., Ltd. Feb. 25, 1949, No. 5251. [Class 40 (vi)] A recurrent sweep voltage is applied to actuate two or more strobing circuits via a suppressor circuit which comprises a biassed rectifier so that actuation of the strobing circuits may be prevented when the sweep voltage is above, or alternately, when it is below a predetermined value. The Figure shows a circuit in which a saw-tooth sweep voltage is applied across terminals IN and in which three strobing circuits which operate at successively increasing voltages are connected across terminals OUT. If switches S1 and S2 are open then as the sweep voltage across the input increases in amplitude, the three strobing circuits will be successively operated. If switch S1 is closed, then by adjustment of potentiometer R2, diode D1 will conduct at a given input voltage to prevent actuation of that strobing circuit which normally requires the largest input voltage to operate. If switch S2 is also closed then the strobing circuit which normally responds to the lowest input voltage is also suppressed.
Patent GB-832338-A (GB)
Title: Vinyllictin compounds and process for preparing the same
IPC: C07F7/22
Filed: 1956-05-04
Abstract: The invention comprises vinylic tin compounds of formula ViaR1ySnX4-(y+a) wherein Vi is a mono-valent vinylic radical, R1 is an alkyl, aryl or heterocyclic radical, X is a halogen atom, a=1, 2, 3 or 4, y=0. 1, 2 or 3 and (y+a) has a value from 1 to 4.  They may be prepared by reacting a vinylic magnesium chloride complex of formula Vi(MgCl)xnQ where Vi is a vinylic radical, Q is a cyclic ether (both as in Specification 792,537), x is 1 or 2, and n is an indeterminate small number of the order of 1 to 3, with a compound of formula R1ySnX4-y wherein X is a halogen atom, R1 is a monovalent hydrocarbon radical and y is 0, 1, 2 or 3.  Specified vinylic radicals include vinyl, 1 - cyclohexenyl, 4 - methyl - 1 - penten-2-yl, 2-propen-2-yl and isocrotoyl.  Numerous examples are given.  Specification 777,158 also is referred to.ALSO:Polytetravinyl tin is prepared by reacting a solution of vinyl magnesium chloride-tetrahydrofuran complex in tetrahydrofuran with tin tetrachloride (Example 8).  Specifications 777,158 and 792,537 also are referred to.
Patent GB-334488-A (GB)
Title: Improvements in tables for casting glass
IPC: C03B19/02
Filed: 1930-02-17
Abstract: 334,488. Brancart, Y. Feb. 2]. 1929, [Convention date]. Rolling. - Relates to a casting table of the kind which is cooled by circulating water beneath the plate that forms the surface of the table and in contact with ribs which are formed thereon to increase its cooling surface. According to the invention, means are provided for keeping the water in contact with the plate however it may be bulged by the heat of the glass, and for removing the steam that tends to accumulate under the bulged portions. The table is shown in cross-seotion in Fig. 1 and in longitudinal section in Fig. 3. It comprises a plate 1 having depending cooling-ribs 2, and side portions which are joined by a bottom plate 4 to form a chamber 3 through which water is circulated. The water inlet pipes 5 and outlet 6 open into recesses 7 formed in the underside of the plate 1, so that the water is supplied and discharged at a level above that of the under surface of the plate. In the central portion of the plate, where the bulging is greatest and steam tends to accumulate, a pipe 9 is provided which opens close to the plate, or into a recess 10 in the plate, and provides a means for the steam to escape. The pipe is of small diameter, so that little water runs out when steam is not being formed.
Patent GB-434119-A (GB)
Title: Improvements relating to light-measuring instruments
IPC: G01J1/42
Filed: 1934-02-19
Abstract: 434,119. Photometric apparatus. BRITISH THOMSON-HOUSTON CO., Ltd., Crown House, Aldwych, London, and RUFF, H. R., Waverley, Overslade Lane, Rugby. Feb. 19, 1934, No. 5495. [Class 97 (i)] In a photometer, footcandle meter, or other apparatus for measuring or comparing the intensity of light a rectangular box 1 has mounted across one end a lens 5 which is normally covered by the hinged door of the box. When the door is opened this lens directs light from a source 6 on to a photo-electric cell 7 which is connected to an ammeter 8. A sliding shutter closes an opening 11 through which the cell may be viewed so that the light can be directed thereon. When used as a foot-candle-meter, an inclinometer 12 such as that described in Specification 433,636 is mounted in the side of the box whereby the inclination of the incident light may be measured. From the reading of the light intensity and the angle of incidence of the light, the illumination on a horizontal plane such as a roadway can be calculated.
Patent GB-270842-A (GB)
Title: Improvements relating to travelling ovens for baking bread, biscuits and the like
IPC: A21B1/48
Filed: 1926-02-26
Abstract: 270,842. Boer, H. P. den. Feb. 26, 1926. Bakers' ovens. - A travelling oven 1 is provided with two or more superposed endless conveyers 2, 3 driven either together or separately, and burners 4 are arranged above and below the upper run of each conveyer. The charging and discharging tables 9, 11 of the conveyer 2 are displaced relatively to those 10, 12 of the conveyer 3 to facilitate independent working of the conveyers. The front end of the oven is provided with separate doors operated by handles 5, 6 and the rear end with waste-product flues 7, 8 communicating with a stack. A partition may be arranged between the conveyers in which case separate off-take flues are provided for each of the compartments thus formed.
Patent GB-525361-A (GB)
Title: Improvements in or relating to motion-picture camera apparatus
IPC: G03B15/08
Filed: 1939-02-20
Abstract: 525,361. Kinematograph cameras. BOSCH GES., R. Feb. 20, 1939, No. 5537. Convention date, Feb. 25, 1938. [Class 97 (i)] The casing comprises a base member 4 serving as a bed plate and a carrier for a second bed plate 5, the entire driving mechanism being mounted on and between them, and the base member is screwed or otherwise detachably secured to a frame 1, to which a hinged cover 2 is detachably secured. Supports 6 for the plate 5, and bearings for the mechanism spindles, may be integrally formed on the member 4. The space between the plate 5 and the cover 2 may house a film holder, and the lens and gate may be carried by the frame 1.