baber/WOPTO huggingface dataset:
Patent GB-420993-A (GB)
Title: Method of manufacturing formaldehyde in a solid state
IPC: C08J9/00
Filed: 1933-07-13
Abstract: Solid formaldehyde preparations, which are readily soluble in cold water, are prepared by evaporating an aqueous solution of formaldehyde at temperatures below 32 DEG  C., the evaporation being performed in vacuo when a simple formaldehyde solution is treated, or a colloid may be added and the evaporation performed either in vacuo or at normal pressure.  Colloids, when used, should be employed in quantities materially less than those capable of chemically combining with the aldehyde, and the solutions may be neutralized before evaporation.  Desiccating media such as sulphuric acid or calcium chloride may be used to accelerate evaporation.  According to examples: (1) 50 cc. of a 4 per cent solution of egg albumen are mixed with 50 cc. of commercial formaldehyde solution, and the mixture is neutralized with dilute alkali and evaporated at room temperature either by standing in shallow dishes or in vacuo; (2) a 4 per cent solution of egg albumen is mixed with 5, 25 or 50 cc. respectively of formaldehyde solution and evaporated in vacuo over sulphuric acid at room temperature; (3) formaldehyde solution is evaporated in vacuo at room temperature.  The solutions containing a colloid may, if desired, be obtained also by passing gaseous formaldehyde into a solution of the colloid.
Patent GB-420695-A (GB)
Title: Improvements in fishing reels
IPC: A01K89/033
Filed: 1933-07-13
Abstract: 420,695. Fishing. PEEL, E. T., Wyndham's Club, St. James's Square, London.- (Kindersley, R. F. ; 9, Rue Toussoum Pacha, Alexandria, Egypt) July 13, 1933, No. 19822. [Class 48] A friction clutch disengages the winding plate of a fishing reel on reversal and a brake resists further movement of the spool. When the plate l is turned to wind in the line, teeth k engage arms j and turn cams f which expand spring-pressed annular shoes into contact with the spool C. On reversal of the spool, the arms j engage cam surfaces and the shoes are released. The brake comprises a band 3 which is tightened by a hand lever 5. The spool is connected to the brake drum 2 by a ratchet-ring x. When the direction of rotation of the spool is reversed the ring x rotates until it engages drum lugs z. Subsequent movement is resisted by the brake. Additional brake pressure is promoted by a hand-lever 14.
Patent GB-360427-A (GB)
Title: An improved machine for making medicinal capsules and the like
IPC: A61J3/07
Filed: 1930-06-30
Abstract: 360,427. Moulding medicinal capsules &c. DEHN, F. B., 103, Kingsway, London.- (Parke, Davis, & Co. ; 2951, Atwater Street, Detroit, Michigan, U.S.A.) June 30, 1930, No. 19829. [Class 87 (ii).] Medicinal capsules &c. are made in a machine comprising opposed synchronously-driven mechanisms for making respectively the bodies and caps, means being provided for simultaneously joining caps produced in one mechanism with bodies produced in the other. The bodies and caps may be of different materials. In Fig. 2 a pin P on which the capsules are formed is shown within a greasing cup G, prior to being dipped in a bath of gelatin M, Fig. 3. The pins are operated in groups and remain in the bath a sufficient length of time for the gelatin to collect thereon. From the greasing and dipping units A, B, Fig. 1, the pins are raised by an elevating and whirling gear to a drying unit C. An air-circulating drier-unit H is shown in Fig. 5 with the pins P passing through. Bars of pins then pass to the unit D which feeds single bars on their sides to the unit E for stripping, cutting, and capping. The dried capsules are stripped from the pins into holders K, Fig. 8, and then revolved rapidly against knives N, Fig. 7. The holders K then move inwardly towards other holders K, Fig. 8, containing the bodies of the capsules, and place the caps thereon. During the capping movement the completed capsules are ejected from the holders and dropped on to a conveyer. After the capsule parts have been stripped from the pins, the bars of pins are moved out of the stripping unit to the greasing unit for regreasing preparatory to repeating the operation. In the stripping operation the pins P are embraced by fingers F which are moved lengthwise of the pins to push the capsules into the holders K. After the stripping operation the fingers F are opened by a cam bar O.
Patent GB-1039437-A (GB)
Title: Photographic contact printer
IPC: G03B27/02
Filed: 1965-05-11
Abstract: 1,039,437. Contact printing using curved pressure plates. NATIONAL CASH REGISTER CO. May 11, 1965 [May 26, 1964), No. 19855/65. Heading G2A. In a contact printer having a movable convex pressure plate 31 and a stationary mating concave pressure plate 32, photographic film 21 from a reel 46 is threaded through a printing section 48 on to a reel 51 when the plate 31 is raised, a coated glass master 16, a glass back up plate 37 and the plate 32 being placed on a bed 64 and held thereon by rails 72. Closure of a hand switch 138 actuates valve 87 to direct compressed air through a tube 88 causing a piston and cylinder assembly 76 to lower the plate 31 which thus makes contact first with the film in the region A of Fig. 4. Further depression of the plate brings it into contact with the rest of the film and forces air out from between the film and the master 16. When the plate 31 reaches the bottom of its stroke, a delay timer 52 is actuated to energize a rotary solenoid 144 after the stresses in the film emulsion have balanced out. The solenoid 144 rotates a shutter 146 allowing light from a source 151 to be reflected by a mirror 154 to expose the film, the mirror being continuously wobbled through a small angle to average out intensity variations in the light rays and thus to evenly expose the film. After exposure, a lift delay timer 54 causes air to be directed through a tube 89 to raise the piston and plate 31. While the plate is being raised, the film is lifted off the master by lifters 92, 93 and then advanced to take up mechanism 49, a rocking lever 94 ensuring that the film is not advanced before it is completely off the master. The cycle is repeated. Dust free air is blown across the apparatus during the cycle so as to remove dust from between the film and the master.
Patent GB-1293386-A (GB)
Title: Switching networks for telecommunications switching system
Inventor: ARNOLD JOHN SPENCER
IPC: H04Q3/00
Filed: 1969-04-18
Abstract: 1293386 Telephone switching networks PLESSEY CO Ltd 24 Feb 1970 [18 April 1969] 19960/69 Heading H4K The invention relates to a method of extending a switching network comprised of two equal ranks of multi-stage co-ordinate switch frames, ATB1 to ATB16 and BTB1 to BTB16, and having links LKS between the ranks such that each switch frame of one rank is linked by a group of links to each frame of the other rank. The switch frames ATB have last stages AS1, and the frames BTB have first stages BS1, comprising the 4x16 co-ordinate switches SW1 to SW16, the number of such switches in each frame being equal to the number of links in each group of links between frames, and the number of outlets of each switch being equal to the number of frames in each rank. Each frame ATB, BTB, may comprise, two, three, or four multi-stage switching arrays the corresponding outlets of which are multipled to the links LKS. The switches SW1 to SW16 may be 4 x co-ordinate arrays, Fig. 2 (not shown), to serve in a network having two ranks of four switch frames each. Expansion of this network, which has the same number of links LKS per inter-frame group as that shown in Fig. 1, is effected by adding switch frames in each rank, each additional frame requiring an additional outlet in each of the switches SW1 to SW16 of each frame. Further expansion can be effected by multipling the multi-stage coordinate switch arrays as indicated with reference to Fig. 1, the number of switch arrays multipled in any frame being no more than one more than exists in any other frame.
Patent GB-459490-A (GB)
Title: Improvements in or relating to carburettors for internal combustion engines
IPC: F02M1/04
Filed: 1936-07-20
Abstract: 459,490. Spray carburetters. SOC. ANON. SOLEX, 190, Avenue du Neuilly, Neuilly-sur-Seine, France. July 20, 1936, No. 20064. Convention date, Oct. 8, 1935. [Class 7 (iii)] A control member for putting into and out of action an auxiliary starting carburetter and for modifying the richness of the mixture supplied thereby, the position of the member depending upon the variable viscosity of a mass subjected to engine temperature, simultaneously controls by its displacements at least one passage for the combustible mixture and at least one air inlet to diminish the quantity of mixture delivered by the carburetter in proportion as the engine temperature rises. The delivery tube 10 from a starting carburetter 9 such as that described in Specification 357,310, leads to a chamber 13 communicating by a passage 14 with the induction pipe 1 downstream of the throttle 2. The chamber 13 houses a valve such as a piston 16 adapted in its closed position to close the passage 14 and in its open position to open thereto an air inlet 15 and superposed passages 11, 12 connecting the delivery tube 10 to the chamber 13. The opening movement is effected manually &c. and is rapid but closure takes place under the action of a spring 24 in a dashpot 21 containing a piston 18 connected to the piston valve 16. Flap valves 20 in the piston 18 permit rapid downward movement thereof and a calibrated byepass 22, 23 delays the return movement to a degree varied by the viscosity of the fluid in the dashpot which is disposed adjacent the engine to respond to its temperature. By forming the higher passage 12 of less diameter than the passage 11, the rising piston valve 16 first cuts off the larger mixture supply, then cuts down the air supply through the inlet 15 and finally closes the passage 14, there being corresponding diminution in the suction applied to the starting carburetter 9.
Patent GB-292374-A (GB)
Title: Improvements in or relating to photographic sensitisers
IPC: G03C1/14
Filed: 1927-07-28
Abstract: 292,374. Kodak, Ltd., (Eastman Kodak Co.). July 28, 1927. Quinoline dyes.-Dyestuffs effective for sensitizing photographic emulsions to that portion of the spectrum 740-1100 ÁÁ are produced by the action of a strong base and iodoform upon a quaternary ammonium salt derived from lepidine or from a lepidine derivative having one or more substituents in the benzene nucleus. In an example, lepidine ethiodide is treated with caustic soda in the presence of iodoform in boiling methyl alcoholic solution. On cooling, a product which sensitizes in the region 760-1100 ÁÁ crystallizes out and on concentrating the mother liquor, a product having an effect in the region 740-760 ÁÁ is obtained. Other lepidine alkyl halides such as the methiodide and the butyl and propyl halides may be used as starting materials; lepidineethyl-p-toluenesulphonate, lepidineethylbenzenesulphonate, lepidineethylsulphate or nitrate and 4: 6-dimethylquinolineethiodide are also specified.
Patent GB-148181-A (GB)
Title: Improvements in multiple telephone wires
IPC: H04J1/00
Filed: 1920-07-09
Abstract: 148,181. Ges. f³r Drahtlose Telegraphie. May 27, 1919, [Convention date]. Void [Published under Sect. 91 of the Act]. Electric oscillations in line wires, telephoning by; electric oscillations, producing. - Relates to multiplex systems in which ordinary low-frequency speech currents and high-frequency oscillations influenced by speech currents are used simultaneously. In the system shown, ordinary speech currents from a microphone 10 are supplied to the line 1, 2 through a transformer 9, and high-frequency currents, produced by the thermionic generator 3 and modulated by the microphone 20, are connected to line through transformer 21, the high-frequency receiving system 4 being arranged as shown. According to the invention, disturbing effects of. the microphone 10 on the high-frequency receiver are avoided by connecting an inductance 11 in series with transformer 9, or a condenser 12 in parallel therewith, or both. z
Patent GB-717449-A (GB)
Title: A flotation process and apparatus for eliminating stones and extraneous matter from potatoes, and other root crops
IPC: B07B13/00
Filed: 1952-08-11
Abstract: 717,449. Cleaning root crops. GOUMENT, V. O. Dec. 8, 1952 [Aug. 11, 1952], No. 20118/52. Class 82 (2) Potatoes and other root-crops are separated from stones and other extraneous matter by being carried down a channel or pipe by carrier water to a gap between the channel or pipe and a lower channel or pipe so that the potatoes and the greater portion of the water jump the gap whilst the stones &c. fall out of the gap. If desired the stones &c. can be carried by an endless belt to retard them. The roots are added in hopper 6 and fall out of the hopper through a variable gate 7 into a stream of water from the pipe 25. The material flows down a trough 3 and over the gap to a second trough 14. Stones &c. fall short at the gap and discharge on to a grating 16, any small particles and water present flowing through the grating to the tank 20 from whence the water is recirculated. The root crops are separated from the water by a grid 18. A belt conveyer 41 may be used to retard the stones, which by virtue of their density will travel in contact with it. The belt may idle against a brake or may be driven (as shown) by the'engine 23 which powers the pump 22 for the water circulation. Various forms of deflectors for ensuring that potatoes falling to the bottom of the stream are propelled into the top portion thereof, are described.
Patent GB-1219821-A (GB)
Title: Anti-squeal braking device
IPC: F16D65/12
Filed: 1968-04-29
Abstract: 1,219,821 Disc brakes. ISUZU MOTORS Ltd. 29 April, 1968 [28 April, 1967], No. 20144/68. Heading F2E. Squeal due to resonance of disc 1, when the friction pads 2, 3 are applied, is prevented by fitting in the outer peripheral portion of the disc an annular damping plate 8 having a depth substantially greater than its thickness and formed of one or more parts of which the natural frequency of vibration is different from that of the disc. As illustrated, the plate is fitted within a groove formed in the periphery of the disc and may be formed in two parts to facilitate fitting. The parts may be secured in position by riveting or press fitting. Alternatively, the plate may be formed by casting, care being taken to avoid welding the plate to the disc. In a modified construction, Fig. 3 (not shown), the disc is divided into two parts with the plate interposed and securely fixed to both parts. Steel, carbon steel, cast iron, non-ferrous metal, an alloy, plastic and rubber are referred to as suitable materials for forming the damping plate.
Patent GB-243433-A (GB)
Title: Improvements in and relating to apparatus for separating fuel and other oils from water contaminated therewith
IPC: B01D17/02
Filed: 1924-08-26
Abstract: 243,433. Green, E. W., and Ogden, H. Aug. 26, 1924. Separating by gravity.-Apparatus for separating oil and water, for example, from the fuel tanks on board ship, comprises a tank a provided with a channel or channels b in its upper part. The liquids tend to stratify in the channels and the heavier liquid escapes. into the tank a through perforations j, the lighter liquid flowing through one or two rows of perforations k, l, or over a sill in or to the top of the liquid in the tank. The water escapes between plates q, r and passing over a weir r<1>, is taken by a pipe f to the outside of the tank. The oil passes over a weir u<8>, of greater height than the weir r<1>, to compensate for the different specific gravities of the liquids, into a conduit u, from which it is withdrawn by a pipe g. Water may be added to or taken from the space between the plates q, r by service pipes z, z<1>. Compensation for level is provided by pivoting the plates q, r on a bearing e, an adjusting screw u<5> being mounted on the tank. The pipes f, g are flexible, or may communicate with the exterior of the tank through passages in the trunnion e. The channels b may also be adjusted for level. While the weirs r<1>, u<8> are close together no adjustment for level is necessary, but if they are far apart, such adjustment may be provided. A distributor c leads the liquid mixture to ports n which are slightly raised above the bottom of the channels b. Cocks a<2>, a<3> enable the depth of the stratum of oil to be ascertained.
Patent GB-1005570-A (GB)
Title: Improvements in or relating to supporting constructions for a blackboard, projectionscreen or like article
IPC: B43L1/04
Filed: 1962-05-28
Abstract: 1,005,570. Movable boards. H. WOLTERS. May 28, 1962, No. 20368/62. Heading G5C. [Also in Divisions B6 and G2] In an arrangement for counterbalancing a verti-, cally movable blackboard projection screen, notice board or the like, the blackboard &c. is suspended from chains attached to eccentricallymounted rotatable circular segments, and a spring- loaded chain is attached to one of the segments, the arrangement being such that the torque exerted by the weight of the blackboard on the segments is always approximately equal to that exerted by the springs. As shown, the blackboard 1, which has extensions hinged to its sides, is vertically movable on rollers 8 carried by side members 2a of a fixed frame 2 and its weight is taken by chains 14, 15. The chain 14 passes over a pulley 6 mounted on the frame 2 and passes around and is attached at 16b to a circular disc 16 eccentrically mounted on a spindle 17 fixed to a member 2e of the frame 2. The chain 15 passes around and is fixed at 16c to a half disc 16a of the same diameter as the disc 16 and which is also eccentrically mounted on the spindle 17 and fixed to the disc 16, but its eccentricity is 90 degrees displaced with respect to that of the disc 16, i.e. the point 16c is at a maximum distance from the spindle 17 as is the point 16b. Chains 13 are also secured to the disc 16 at 16b, and have attached thereto springs 4 the tension of which is adjustable by screw devices 3 by which their free ends are anchored to one of the side members 2a. In the highest position of the blackboard, the point 16b is at a position corresponding with that of 16c, Fig. 1, whilst in the lowest position of the board, it is diametrically opposite the position of 16c, Fig. 1. With the arrangement, the two ends of the board move up and down at the same speeds, but the turning moment exerted by the chains 14, 15 on the discs 16, 16a increases as the board moves downwardly and vice versa. The tension exerted by the springs 4 increases as the board moves downwardly but because of the eccentricity of the disc 16, the distance from the spindle 17 of the point where the chain 13 makes contact with the disc decreases so that the torque balances that of the chains 14, 15. Stops 19, 20 on the blackboard engage pins 21, 22 on the frame 2 to limit the vertical movement of the board.
Patent GB-1450738-A (GB)
Title: Connecting device
IPC: F16B12/26
Filed: 1974-05-08
Abstract: 1450738 Frame joints NYKVARNS SKYLT AB 8 May 1974 20379/74 Heading F2M Frame members 1, e.g. of plastics material, having a base 2, resilient flange 3 and a more rigid flange 4 are connected together in abutment, e.g. with mitred ends in contact, by a connecting piece 6 having arms 9, 10 each provided, on a face 15, with a longitudinal rib 12 and a transverse rib 13 (or alternatively with similarly disposed grooves), the arms 9, 10 being insertable in the spaces 5 between the flanges 3 and 4 of each frame member such that the ribs 12, 13 (or grooves) of each arm engage, by transverse or longitudinal movement with a snap action, corresponding grooves 7, 8 (or ribs) in a facing surface 14 of the flange 4 of the associated frame member. A reinforcing plate 11 may be rigidly joined to the arms 9, 10 to increase the rigidity of the connection.
Patent GB-995394-A (GB)
Title: 2-sila-1,4-dioxan compounds
IPC: C07F7/18
Filed: 1963-05-22
Abstract: 2,2-Dimethyl-2-sila-1,4-dioxan and its derivatives having the formula <FORM:0995394/C3/1> are prepared by reacting a dimethyl-(bromomethyl)-alkoxy- or chloro-silane with an equimolar amount of an organic compound containing two hydroxy groups on adjacent carbon atoms to form a dimethyl-(bromo-methyl)-(b hydroxy-organooxy)-silane and slowly adding to the latter at elevated temperature a tertiary nitrogen base in amount equivalent to the bromine.  If a chlorosilane is used in the first reaction, a tertiary nitrogen base must also then be present in stoichiometric amount. The compounds other than 2,2-dimethyl-2-sila-1,4-dioxan itself are claimed per se. Examples of compounds with two adjacent hydroxy groups are ethylene glycol, pyrocatechol, 1,2-dihydroxy - 4 - alkoxybenzenes and 1,2-dihydroxy-4-(trifluoromethylmercapto benzene. Triethylamine is the preferred base.  In the Examples: (1) 2,2 - dimethyl - 2 - sila - 1,4-dioxan is prepared via 1-hydroxy-2-[dimethyl-(bromomethyl) - siloxy] - ethane; (2) benzo - 2,2 - dimethyl - 2 - sila - 1,4 - dioxan is prepared via 1 - hydroxy - 2 - [dimethyl - (bromomethyl)-siloxy] - benzene; (4) (trifluoromethyl - mercaptobenzo) - 2,2 - dimethyl - 2 - sila - 1,4-dioxan is prepared together with the benzo derivative from a mixture of the corresponding hydroxy compounds.  Specification 957,987 is referred to.
Patent GB-1200048-A (GB)
Title: Electric smokers lighter igniting unit and lighters comprising such units
IPC: F23Q7/00
Filed: 1969-04-22
Abstract: 1,200,048. Electric lighters. CASCO PRODUCTS CORP. 22 April, 1969 [7 May, 1968], No. 20423/69. Heading F4F. In a smoker's electric lighter, spring fingers 27 in a tubular well 11, e.g. in an instrument panel 15 in a car, releasably engage an outer shell 23 of a removable tubular igniter unit 10 slidably received in the well for storage and energization, the unit 10 includes a handling knob 35 of smaller dimensions than the sleeve 23 so that to slide a cup 20 in the unit, relative to the sleeve 23, from the storage position, Fig. 1, to the energizing position, Fig. 2 (not shown), in which latter position bimetallic fingers 12 in the well grip the cup 20 and convey current to a coil heater 19, the knob is moved from a position substantially flush with the panel 15 into the sleeve 23 and well 11 and is rendered inaccessible for gripping. Another cup 28 is secured base-tobase with cup 20 and is slidable within an inner sleeve 29, itself slidable in the sleeve 23, and depression of the knob 35 causes a flange 33 on sleeve 29 to compress a spring 32 so that when the heater is energized and the fingers 12 release cup 20, the sleeve 29 is returned to its normal position in which the flange 33 engages the bulged end of sleeve 23, and the cups 28, 20 continue to slide in sleeve 29 until a shoulder 40 on cup 20 strikes a flange 30 on sleeve 29, Fig. 3 (not shown). The knob 35 is secured to a sleeve 37 which then slides under momentum out of cup 28 until its end flange 41 engages with a flange 42 of a cup 43 secured within the cup 28, when the igniter unit may be removed from the well 11, Fig. 4 (not shown). A friction-ring 38 is inserted between sleeve 37 and cup 28. An eyelet 44 secures the cups 20, 28, 43 together, cup 20 being electrically insulated, and cups 28, 43 being earthed, and a stud 45 in the eyelet is connected to the centre of the coil 19, the outer end of the coil being secured to cup 20. In a modification, Fig. 7 (not shown), the knob sleeve 37 is made of a poor heat conductor, e.g. plastics material, rather than metal, but having a metal sleeve insert. In Fig. 6 (not shown), the lighter is shown combined with an ash-tray having a hinged cover.