baber/WOPTO huggingface dataset:
Patent GB-1090065-A (GB)
Title: Improvements in or relating to the control of intensity in cathode ray tubes
IPC: H01J29/52
Filed: 1965-06-17
Abstract: 1,090,065. Cathode-ray tube circuits; transistor amplifying circuits. INTERNATIONAL BUSINESS MACHINES CORPORATION. June 17, 1965 [July 16, 1964], No. 25660/65. Headings H3T and H4T. The intensity of the trace on a cathode-ray tube screen is maintained in linear relationship to a control voltage proportional to the velocity of the beams across the screen. The invention is described in connection with a display arrangement, associated with a data processing system or computer, in which vectors are traced on the tube screen (by appropriate X and Y beam deflections) in constant intervals of time irrespective of their lengths so that the beam velocity may vary for different vectors (Figs. 3 to 5, not shown). The length of the vector is thus proportional to the beam velocity and in carrying out the present invention a control voltage proportional to such length is derived from the computer &c. and applied via a differential amplifier, termed a summing node, 25, Fig. 1, and amplifier 27 to the control grid 29 of the display tube the cathode circuit of which includes an impedance 33 supplying a negative feedback voltage to 25 via amplifier 37. This arrangement is stated to provide a linear relationship between the control voltage and the cathode current of the tube. As described in connection with Fig. 3 (not shown), the control voltage consists of a signal proportional to the larger plus one third of the smaller of the X and Y deflection changes required for the tracing of each vector (long vectors being considered as the sum of a number of smaller ones) and approximates to a signal proportional to the square root of the sum of the squared deflection changes. The amplifiers 27 and 37 comprise conventional transistor arrangements and the summing node 25 consists of a differential amplifier utilizing a "long-tailed" pair (45), (47), Fig. 2 (not shown), supplied from constant current sources (51), (55) and (93, (97). In operation, a brightness potentiometer (101) sets the upper limit to the positive voltage supplied to control grid (29) and this varies downwardly as the positive input control voltage at terminal (41) increases. The contrast of the display is adjusted by rheostat (78).
Patent GB-246566-A (GB)
Title: Improvements in friction couplings
IPC: F16D43/18
Filed: 1924-10-28
Abstract: 246,566. Wersõll, K. J. Oct. 28, 1924. Clutches, friction, of the type in which engaging pressure is produced by the centrifugal body B against a coacting cylindrical surface A are constructed according to geometric plan. In Fig. 1, motion in the direction of the arrow X is imparted to the driving-member B of the clutch by a radial pin D, contact between these elements being along a line or surface 3, 5. The rear contact point of the body B is denoted by numeral 1. The innermost point of contact 5 lies upon or outside a critical line 1, 2 drawn from the rear contact point 1 perpendicularly to the line of contact 3, 5, 2. The right half of Fig. 1 shows a modification for driving in the opposite direction. Several modifications are described some employing springs to assist the centrifugal action. In Fig. 15 is shown a form employing a drag-link 13 instead of a radial pin. The critical line connects the rear driving point 10 of the body B with the centre 9 of a driving pin D. Upon or outside of this line must lie the innermost point of contact between the link 13 and a pin 8 upon the body B.
Patent GB-382026-A (GB)
Title: Tension control for motion picture apparatus
IPC: G03B21/32
Filed: 1931-09-14
Abstract: 382,026. Kinematograph apparatus. VICTOR, A. F., 242, West 55th Street, New York, U.S.A. Sept. 14, 1931, No. 25735. [Class 97 (i).] Kinematograph apparatus comprising means for feeding the film at different speeds has means for providing variable tension on the film in proportion to the speed at which the film is fed. As shown in the Figure depression of the plunger 36 causes the cam 31 to move a frusto-conical brake ring 24 axially away from pivoted brake shoes engaging the internal surface of the brake ring to increase the speed of feed of the film. The consequent movement of the wire arm 62 mounted on the shaft 32 of the cam 31 operates a crank 58 to cause a spring member 61 to bear on a head 55 of a pin that projects from the pressure plate and thus increases the pressure on the film.
Patent GB-652964-A (GB)
Title: Improvements in or relating to locking devices
IPC: E05B19/08
Filed: 1948-10-04
Abstract: 652,964. Locks. CONCRETE UTILITIES, Ltd., and MARQUES, C. A. Oct. 4, 1948, No. 25743. [Class 44] In a lock, e.g. for the door closing a cavity in a concrete lamp post, and of the kind operated by a key having a pivoted arm, the arm is retained in the position at right angles to the key shank either by means provided on the arm or by means on the latch operating member. Fig. 1 shows a key for use in a horizontal position, the arm 17 being pivoted to the shank 16 and having an extension 17a adapted, when the arm is turned to withdraw the latch as in Fig. 4, to abut the inner face of the latch body 11 so that the door may be pulled open by means of the key handle 15. The key is passed through the key-hole with the arm in line with the key shank, the arm falling under gravityinto a vertical position when fully inserted. During this movement the end 17a of the arm passes through a radial slot 11d in thekey-hole. The latch 12 is mounted in a blind socket in the body 11 and shot by a spring 14. A peg 13 screwed into the bolt projects through a slot in the body for engagement by the arm 17. It may leave a turned down portion13a adapted to retain the arm at right angles to the key shank instead or in addition to the extension 17a. The slot 11d has a chamfered entrance for easy withdrawal of the key. The peg 13 may merely comprise a taper-headed screw entering a threaded hole in the latch. In another form, to reduce the length of the arm 17 the latch body is cut away over a quadrant the arm being adapted to engage in a notch in the latch itself. Fig. 8 shows a key adapted for use in a vertical position, the arm 17 being projected by a push rod 20 abutting a step 17a in the end of the arm. The rod is formed with a handle 20a and is slightly bent at 20b.
Patent GB-804764-A (GB)
Title: Improvements in x-ray screens
IPC: G21K4/00
Filed: 1956-08-23
Abstract: 804,764. Electroluminiscent materials : image intensifiers. GENERAL ELECTRIC CO. Aug 23, 1956 [Sept. 12, 1955], No. 25808/56. Class 39(1). An X-ray image intensifier comprises a layer of X-ray sensitive material having a characteristic visible light emission when excited by X-rays, and a visible light amplifying cell having a peak sensitivity to that characteristic emission, contiguous with the X-ray sensitive layer means being provided to impress an electrical potential difference between opposite surfaces of the light amplifying cell. The light amplifying cell, Fig. 2, comprises a continuous homogeneous, non- particulate layer 5 of visible light-sensitive visible light emitting material sensitive to a short wavelength blue light characteristic of the X-ray sensitive layer 4, the potential difference being impressed by transparent conducting layers 6, 7. The X-ray sensitive layers 4 may be of calcium tungstate or of zinc and/or cadmium sulphides with a Zn to Cd ratio of 3 to 1 or with Cd as 15À35 per cent. of the sulphide, activated by 0À001 to 0À3 per cent of silver with chlorine. One such mixture has a peak emission when excited at 5100‹A. The light sensitive, light emitting layer 5 may be composed of a zinc and cadmium sulphide comprising 0À70 per cent. Zn, remainder Cd, a zinc sulpho-selenide comprising 0À70 per cent. S, remainder Se, 0À5 to 2 per cent. Mn and 0À001 to 0À3 per cent. Cl, I, In or Ga. The electrode layers 6, 7 are of titanium dioxide. In forming the cell shown in Fig. 2, the plate 8 is first treated at 200‹C with vapours of titanium tetrachloride and water to form the layer 7 and is then subjected to the vapours of a charge containing zinc, zinc iodide and manganese iodide at 750‹C in an atmosphere of hyrdogen sulphide and/or hydrogen selenide to deposit the layer 5. Thereafter the initial process is repeated to form the second titanium dioxide layer 6 and finally sprayed with the X-ray sensitive material 4 in a suitable nitrocellulose or potassium silicate binder. Finally the whole plate assembly is baked for about one hour at the temperature necessary to thermally set the binder. Suitable thicknesses of the various layers are specified. Specification 724,977 is referred to.
Patent GB-601827-A (GB)
Title: Improvements in or relating to gas-blast electric circuit-breakers
IPC: H01H33/70
Filed: 1945-10-04
Abstract: 601,827. Gas-blast switches. REYROLLE & CO., Ltd., A., and ALLAN, A. Oct. 4, 1945, No. 25865. [Class 38 (v)] In a gas-blast circuit-breaker having two breaks in series, main arcing electrodes F<1>, F<2> are arranged in fixed relation to conductive nozzles C<3>, C<4>, and arc-initiating contact fingers G<3>, G<4> move as a unit, simultaneously producing arcs which are transferred to the nozzles and thence to an auxiliary electrode D. When opening the circuit-breaker, compressed air enters the casing at A<4>, flowing directly to a spring-biassed piston G' carrying the fingers G<3>, G<4> and indirectly to the nozzles C<3>, C<4> through spaces between insulating cylinders B<2>, B' and between cylinders B' and conductors F<3>, F<4> and through conduits C<1>, C<2> which are conductive and preferably magnetic. The gases are exhausted through a cooler, Fig. 3 (not shown). The fingers G<3>, G' are insulated at G<6> from one another and from the piston G' but are both conductively connected to a plate G<7> through contacts G<9>, thereby normally bridging the electrodes F<1>, F<2>. In Fig. 6, the arc-initiating fingers S<1>, S<2> move parallel to the axes of the main electrodes T<1>, T<2>, which are arranged in a single arcing chamber V. An arc-initiating bridging butt contact may be arranged on either side of the main electrodes, Fig. 5 (not shown). The blast gas may pass through a honeycomb and along straight arcing chambers, Fig. 7 (not shown) to reduce turbulence.
Patent GB-1345917-A (GB)
Title: Cartridge and cameras therefor
IPC: G03B17/30
Filed: 1971-04-19
Abstract: 1345917 Cameras and cartridges therefor EASTMAN KODAK CO 19 April 1971 [6 April 1970] 25924/71 Heading G2A A cartridge containing film, or film and backing paper, has a supply chamber and a take-up chamber on either side of a surface for supporting the film in the exposure plane, the support surface having seating pads thereon extending forwardly for a distance equal to the thickness of the film, or the film and backing paper. As shown, the cartridge comprises lower and upper casing members 11, 12, the lower member 11 having a supply compartment 17 from which the film 14 winds across to a take-up compartment 18 containing a core 13. The back wall member 25 of member 12 curves round at its ends and has grooves 40 in which tongued ribs 38, 39 on member 11 engage in a light-tight manner. The upper and lower surfaces of the two casing members also have a similar tongue and groove engagement with the upper and lower wall members 30 and 19. Above and below the flat film surface 26 of the back wall member are pairs of seating projections as at 55 and (54), Fig.4 (not shown), which project by an amount slightly in excess of the combined thickness of the film and backing paper. These projections form seating surfaces which engage in light-tight fashion with seating recesses on the camera body. Thus the front exposure surface of the film is accurately positioned at the focal plane while the film and backing paper are still able to slide freely along support rails (77, 78), Fig.5 (not shown) formed on rearwardly facing gate support surfaces (79, 80).
Patent GB-947898-A (GB)
Title: Improvements in or relating to cyclopropylamine derivatives and processes for their preparation
IPC: C07D307/86
Filed: 1961-07-18
Abstract: The invention comprises cyclopropylamine compounds of the formula: <FORM:0947898/C2/1> wherein X is hydrogen, halogen, alkyl, alkoxy, nitro, trifluoromethyl, amino or hydroxy, A is -O-, -S-, or -NH- and R and R1 are hydrogen or alkyl or together with the nitrogen atom form a 5- or 6-membered ring, such as piperidine pyrrolidine, piperazine or N1-hydroxyethyl-piperazine, and non-toxic pharmaceutically acceptable acid addition salts thereof. It comprises also the preparation of the above compounds by converting a corresponding benzofuryl-, thianaphthenyl-, or indolyl-, cyclopropyl carboxylic acid into the acid chloride by treatment with thionyl chloride, reacting with sodium azide to give the cyclopropyl carboxylic azide, pyrolysing to give the cyclopropyl isocyanate and hydrolysing to the amine, which may if desired be converted to compounds wherein R and R1 are alkyl groups or form part of a ring, e.g. by alkylation.  Benzofuryl-, thianaphthenyl- and indolyl-cyclopropyl carboxylic acids used as starting materials, are made by the following methods (a) an a - (2- or 3-thianaphthenyl, benzofuryl or indolyl)- ethanol is dehydrated to the corresponding vinyl-thianaphthene, -benzofuran or -indole which is reacted with ethyl diazoacetate and heated to give a cyclopropyl carboxylic ethyl ester, followed by hydrolysis to give the free acid; (b) for the preparation of indolyl-(2)-cyclopropane carboxylic acids a phenyl hydrazine is condensed with ethyl 2-acetylcyclopropane-carboxylate, the resulting methyl 2- carbethoxy-cyclopropyl ketone phenyl hydrazone is cyclized with mineral acid and the ester obtained is hydrolysed to the desired acid; (c) for the preparation of 3-(cyclopropanecarboxylic acid)-indoles a phenyl diazonium chloride is reacted with ethyl a -(2-carbethoxycyclopropylmethyl-acetoacetate, the resulting phenyl hydrazone is cyclised to give a 2-carbethoxy-3-carbethoxy-cyclopropyl-indole which is hydrolysed to the free acid and heated to remove the 2-carboxy group and (d) for the preparation of a thianaphthene -3- cyclopropanecarboxylic acid, a thianaphthene is condensed with succinic anhydride to form a 3-oxo-3-(3-thianaphthenyl)-butyric acid, treated with sodium borohydride to yield a 3-hydroxy -3- (3-thianaphthenyl) - butyric acid, heated to form the corresponding lactone, treated with thionyl chloride and esterified to form ethyl 3-chloro -3-(3-thianaphthenyl)-butyrate cyclised to give ethyl 3-thianaphthenecyclopropyl carboxylate and hydrolysed. Pharmaceutical preparations having anti-depressant, ataractic and hypotensive properties comprise the above compounds of the invention and a carrier, preferably in a form suitable for oral administration or subcutaneous or intravenous injection.  Specification 947,899 is referred to.
Patent GB-889295-A (GB)
Title: Improvements in and relating to the refinement of ores
IPC: C22B34/30
Filed: 1960-07-27
Abstract: In a process for the recovery of molybdenum and tungsten from a molybdenum-contaminated solution containing tungsten and having a pH of at least 8, there is added to the solution at least 170% of the alkali metal sulphide stoichiometrically required to convert the molybdenum to the thiomolybdate complex ion, the solution is digested at at least 80 DEG C. to bring about the conversion, and the solution is acidified to a pH below 2,3 to form insoluble molybdenum trisulphide, which is separated.  The alkali metal sulphide may be Na2S, NaHS, K2S or KHS.  The starting solution may be one obtained by digesting a molybdenum-containing tungsten ore with an excess of sodium carbonate solution.  After the addition of the alkali metal sulphide but prior to the acidification, the silica content of the solution may be lowered by adding alum to form an aluminium hydroxide precipitate which is removed together with silica.  After acidification (e.g. with sulphuric acid) and removal of precipitated molybdenum trisulphide, the tungsten may be recovered by extraction with a p  water-insoluble organic liquid (e.g. kerosene) containing an amine (e.g. bistridecylamine) which forms a tungstate-amine complex. The organic liquid is washed with water and then contacted with an aqueous ammonia solution to obtain an aqueous solution from which ammonium paratungstate (5[(NH4)20].12 WO3. 5H2O) is crystallized.  A list of suitable amines and solvents, and examples of the process are given.
Patent GB-963935-A (GB)
Title: Insulated rail joint construction
Inventor: FERGUSON RANDON OGDEN
IPC: E01B11/54
Filed: 1962-07-06
Abstract: 963,935. Insulated rail joints. JOHNSON RUBBER CO. July 6, 1962, No. 26110/62. Heading E1G. An elastomeric insulating layer bonded between a fish plate and spaced flexible metallic cladding members at least one of the upper and lower load surfaces of the fish plate extends on both sides of the load surface(s) and co-operates with the cladding members to confine the lightlystressed portion of the insulating layer at the load surface(s). As shown, a fish plate 3 has bonded to its fishing faces a layer 13 of insulating, elastomeric, material to which is bonded a flexible metal member 14 or 15 which engages the head or foot respectively of the rails 1, 2. A layer 16 of insulating material bonded to the inner face of washer plates 6, 7 comprises inwardly projecting bushes 17 which line apertures 20 through which pass bolts 8. Between the rail ends there may be a metal clad insert of insulating material of similar configuration in cross-section to a rail. In an alternative embodiment (not shown) the upper face of the plate 13 has a slight recess at the rail joint to relieve pressure on the insulating material at this critical area.
Patent GB-280690-A (GB)
Title: Improvements in or connected with trolleys for moving damaged motor cars and the like
IPC: B62B5/00
Filed: 1926-10-20
Abstract: 280,690. Lake, A. E. Oct. 20, 1926. Trailer vehicles.-A trolly for enabling damaged vehicles to be towed comprises a plate 12 mounted on a wheeled axle 10 and a plate 18 horizontally rotatable on the fixed plate 12, the plate 18 having mounted thereon crutches 26 for engaging the damaged vehicle. The crutches 26 are laterally adjustable on a slide comprising preferably two spaced channel members 20, 21 secured to the rotatable plate 18 and the crutches 26 preferably overhang the crutch members 25 so as to be vertically above the axle 10. A towing pole 15 is provided.
Patent GB-442487-A (GB)
Title: Improvements in liquid-piston reciprocating pumps
IPC: F04B53/14
Filed: 1935-09-23
Abstract: 442,487. Stuffing-boxes. WAINFORD, R. H., 22, Woodlands Terrace, Darlington. Sept. 23, 1935, No. 26255. [Class 122 (v)] [See also Group XXVIII] Packing for a pump plun. ger comprises rings 47 having oil-retaining grooves 49 and alternately fitting the plunger and the bore of the stuffing-box. The packing may rest on a ring 45 supported by springs 52.
Patent GB-374725-A (GB)
Title: Improvements in and relating to refrigerators
IPC: F25D25/00
Filed: 1931-09-19
Abstract: 374,725. Domestic refrigerators. SCHLENK, R., 70A, Margarethenstrasse, Vienna. Sept. 19, 1931, No. 26272. Convention date, Sept. 23, 1930. [Class 29.] The container of a refrigerator comprises an open pot-shaped vessel 3 mounted beneath a fixed lid 2 in such a manner as to be capable of being lowered from the lid. The container is balanced by means of counterweights 7, Fig. 2, travelling within the framework 26 of the apparatus. Between the upper part of the latter, spaces 18 are left through which the refrigerator is charged. A jacket 16 surrounds the container 3 in its lowermost position. Shelves 21 may be arranged above the container suspended from the lid to which the source'of refrigeration may also be affixed. The container may be double-walled and the jacket filled with insulating material such as cork.
Patent GB-634564-A (GB)
Title: Improvements in reservoir writing instruments
IPC: B43K7/00
Filed: 1945-10-10
Abstract: 634,564. Reservoir pens. FEHLING, H. R., and ROSIN, P. O. Oct. 10, 1945, No. 26388. [Class 146 (iii) In a ball-point fountain pen, the ink in the reservoir increases in viscosity with the distance away from the ball so that the tendency to leakage as the ball gap increases due to wear is lessened. As shown, the reservoir comprises a capillary tube 3 charged with two inks 7a, 7b of equal density to prevent their mixing, the ink 7b  being of greater viscosity than that of the ink 7a. The ink column is subject to atmosphere pressure through an air-hole 5. Inks.-The inks may consist of collophony, castor oil, ricinoleic acid and basic dyes, the proportions being such that the viscosities of the inks 7a, 7b are 5 poise and 50 poise respectively, but the densities are substantially the same. Specifications 571,698, 573,747, 597,143 and 629,226 are referred to.
Patent GB-280174-A (GB)
Title: Improvements in or relating to heels of boots and shoes
IPC: A43C13/00
Filed: 1927-10-06
Abstract: 280,174. Schttondermark, C. Oct. 6, 1927. [A Specification was laid open to inspection under Sect. 91 of the Acts, Nov. 9, 1927]. Heels. - Shoe heels are provided with a protective member having side walls c characterized in that the said walls snugly fit in a corresponding recess hollowed out of the outer surface of a heel a and are further provided with a collar c which fits into a circular groove of rectangular cross-section near the upper end of the heel. The standing wall of the heel pad may be strengthened or reinforced by a metal band or wire to be fastened in the groove of the heel. Reference has been directed by the Comptroller to Specification 21536/03.
Patent GB-858585-A (GB)
Title: Improvements in or relating to inching control devices for electric motors
Inventor: BONSOR DAVID VICTOR
IPC: H02P7/20
Filed: 1957-08-22
Abstract: 858,585. Control of motors; controllers. DICKINSON & CO. Ltd., J. Oct. 20, 1958 [Aug. 22, 1957], No. 26537/57. Class 38 (3). A system for inching an electric motor comprises a push-button for intermittently operating a contactor the coil of which is connected in series with contacts of a switch which is opened against spring pressure by a movable machine part after the latter has moved through a predetermined distance, Fig. 1 (not shown). In a further embodiment, depression of an inching push-button energizes an electromagnet 35 which is displaced towards a driving-flange 37 to be coupled to driving sprocket 38. The axial movement of the electromagnet and its flange 36 allows closure of an auxiliary switch 26 in series with the coil of the inching contactor. If the push-button is depressed for an excessive period, the flange 36 is turned until flat 36<SP>1</SP> passes over spring 45. The pressure on the spring is relieved whereupon switch 15 is opened to deenergize the contactor and stop the motor. A torsion-spring 51 returns the parts 35, 36, to the starting-position. Stops 39, 40 prevent turning movement of the electromagnet and flange due to inertia after the switch 15 has been opened, the stop 40 being adjusted so that the stops engage when the flat 36<SP>1</SP> releases the pressure on spring 45. The switch 26 prevents energization of the contactor if the electromagnet 35 fails to move after the push-button has been depressed.