baber/WOPTO huggingface dataset:
Patent GB-1241123-A (GB)
Title: Improved label holder for loose leaf binder
Inventor: SMITH REGINALD ALFRED
IPC: B42F13/00
Filed: 1969-03-04
Abstract: 1,241,123. Loose-leaf binders. RONEO Ltd. 20 Feb., 1970 [4 March, 1969], No. 11520/69. Heading B6E. A label-holder for a loose-leaf binder consists of two plate-like parts 1, 2 hinged together, one part 2 being adapted for securing to the binder and the other part 1 being adapted to receive a label 5. The holder is particularly for use with a binder having no back, the covers each having a U-shaped part, as shown, at the binding edge. Hook means 8 on the part are engaged with the inner edge of a cover, and may be provided with gripping projections 10. Projections 9 on the part 2 engage the rear edges of the bound leaves to prevent movement of the part relative to the binder. Hook-like members 4 and stop means 7 are provided on the part 1 to hold the label 5 and also a sheet 6 of synthetic transparent material. The end of a projection 11 on the part 1 can engage, with a snap action, a slot 12 in the part 2, to hold the parts at right-angles to one another. The device may be made of a flexible synthetic resin with a line of reduced thickness 3 to form the hinge.
Patent GB-178720-A (GB)
Title: Improvements in rock drills
IPC: E21B10/44
Filed: 1921-04-21
Abstract: 178,720. Stahlberg, E. April 21, 1921. Drills.-In a rock drill having breaking surfaces between the cutting-teeth, the outer teeth are radial to the drill axis. A detachable cutter b has radial cutting-edges c and an eccentric edge d, separated by breaking surfaces e, and is twisted in accordance with the twist of the stem a. Attachment is effected by a rib f, central pin g and rivet k. Specification 171,792 is referred to.
Patent GB-200255-A (GB)
Title: Improvements in electric safety lamps for preventing explosions in the presence of explosive gases
IPC: F21L4/00
Filed: 1922-04-25
Abstract: 200,255. Pawelecki, V. April 25, 1922. Separators; supports for electrodes.-The accumulator plates c, d, Fig. 1, of a miner's safety lamp are carried by the cover plate h and rest on an insulating bottom lining g, Fig. 8. A channel-section V-shaped member y serves to separate the upper ends of the plates.
Patent GB-1248811-A (GB)
Title: Methods of testing for differences between a sample pattern with a standard using holographic techniques
Inventor: KOSANKE KURT
IPC: G03H1/00
Filed: 1969-03-05
Abstract: 1,248,811. Holography. INTERNATIONAL BUSINESS MACHINES CORP. March 5, 1969 [March 9, 1968], No. 11661/69. Heading G2J. A method of testing for differences between a sample pattern (e. g. a mask for making semiconductor wafers) and a standard pattern comprises forming a hologram 7 from a standard pattern 3 and a reference pattern 8 Fig. 3, illuminating the developed hologram 7h Fig. 4 with light that has passed through the sample pattern 12 so that any change in the resultant reconstructed reference pattern 11a 11b provides an indication of differences between standard and sample patterns. The hologram is formed by successive partial simultaneous exposures of the standard pattern and the reference pattern. The reference pattern 8 preferably comprises a pair of pin holes 8a, 8b, and the standard pattern 3, comprises three known pattern 3a, 3b, 3c, corresponding to the samples to be tested. Pattern 3b need not be used. The reference pattern 8a, 8b is reconstructed as pattern 11a 11b. If desired the reference pattern could be a point having a concentric circle the circumference of which formed the limits of acceptable deviation of the pin hole. In a further embodiment useful where large numbers of samples have to be evaluated the reconstructed image illuminates a digital light deflector which can be measurably adjusted to cancel out the deviation in the sample.
Patent GB-1473610-A (GB)
Title: Suspension bolt and method of making same
IPC: B21K1/72
Filed: 1975-03-20
Abstract: 1473610 Manufacturing one-piece suspension bolts P A MALMGREN 20 March 1975 11711/75 Heading B3A [Also in Division E2] A method of manufacturing a one-piece iron bolt having a shank portion 1 and a hook portion 6 from a cylindrical workpiece comprises cold bending an end of the workpiece to form a ring portion, cold working the ring portion by pressing perpendicularly to the plane of the ring to produce a rectangular cross-section in the worked portion having a thickness of substantially half the original diameter of the workpiece, bending the distal end of the ring portion perpendicular to the plane of the ring so that the distal end is skewed to form an opening in the ring, and applying transverse forces to the ring to force the distal end past the centreline of the shank portion. The cold working and skewing of the ring portion may be carried out simultaneously in a single operation in a die set using and eccentric press. The hook portion can be formed by bending the workpiece about a mandrel with a lever arm and bending roll. The pressing may be effected in a hydraulic or eccentric press or by hammering.
Patent GB-570005-A (GB)
Title: Improvements relating to coating surfaces with cellulose derivatives
IPC: H01M4/76
Filed: 1943-07-19
Abstract: Coating a porous or rough surface with an organic ester of cellulose of low acidyl value (i.e. containing not more than 1.8 acidyl groups per glucoside unit of cellulose) in the form of an aqueous paste.  An over-coating of a more water-resistant cellulose derivative may be applied.  Cellulose esters specified are the acetate, propionate, butyrate, or mixed esters such as acetate-propionate or acetate-butyrate.  The paste may be made by moistening the ester with water and need not contain any plasticizer.  It may be pressed on to the surface at 100 DEG  to 150 DEG  C. and at a pressure of from 2 to 100 pounds per square inch.  The materials to be coated include hard or soft wood, ceramic materials such as pottery, brick or stoneware, concrete, rough metal surfaces, and fibrous materials, e.g. paper and fibre board. The over-coating may be a cellulose ester such as the acetate, nitrate, propionate, butyrate or a mixed ester such as the acetate-propionate or acetate-butyrate or a cellulose ether such as ethyl cellulose or benzyl cellulose, dissolved in a volatile solvent (ethyl lactate, diacetone alcohol or benzyl alcohol) and containing plasticizers, e.g. diethyl phthalate, tricresyl phosphate, triphenyl phosphate, p - toluene mono - methyl sulphonamide and triacetin. Synthetic resins such as phenol-formaldehyde resins, diphenylol propane-formaldehyde resins, and toluene-sulphonamide-formaldehyde resins may be incorporated in the over-coating lacquer.  In an example, cellulose acetate aqueous paste is applied to wood and over-coated with a lacquer containing cellulose acetate. Specification 568,047 is referred to.
Patent GB-981373-A (GB)
Title: A process for the production of cyanic acid
IPC: C01C3/20
Filed: 1961-03-30
Abstract: <PICT:0981373/C1/1> Cyanic acid in vapour form is produced by introducing urea, biuret or cyanuric acid into a melt of at least one alkali metal salt of cyanic acid, at a temperature between 325 DEG and 600 DEG  C., and recovering cyanic acid from the gaseous products formed.  The salt may be potassium or sodium cyanate or a mixture thereof.  The melt may be agitated, either mechanically or by an inert gas passed through, e.g. NH3, CO2, H2 or helium.  Any melam, melem or mellon formed as by-products may be eliminated by the addition of K2CO3 which reacts with them to form potassium cyanate. In the apparatus shown a vaporizer 1 is partly filled with molten KCNO 2 at 400 DEG  C.  A stream of molten urea 3 is introduced at one end of the vaporizer, and the resulting mixture agitated by a stream 4 of ammonia introduced through a distributer 5 at the inlet end of the vaporizer.  Outlet gases, mainly HCNO, leave the other end of the vaporizer through outlet 6 and KCNO leaves through outlet 7.  This outlet flow of KCNO is lifted by a stream 8 of NH3 through pipe 9 into separator 10, and the separated KCNO is then reheated in heat-exchanger 13 and returned via pipe 17 to the inlet end of vaporizer 1.  The cyanic acid vapour formed may be reacted at once with other substances to produce derivatives, including organic derivatives (see Division C2) and ammonium carbamate, which is prepared by passing a mixture of HCNO and NH3 through silica gel or aluminosilicate catalyst to produce melamine, CO2 and NH3, the latter two of which yield ammonium carbamate on cooling.ALSO:Cyanic acid vapour produced by contacting urea, biuret or cyanuric acid with a molten alkali metal cyanate at a temperature between 325 DEG  C. and 600 DEG  C. (see Division C1) is reacted at once with other substances to produce the following organic compounds:-  Malamine by passing organic acid with or without added ammonia through a silica gel or aluminosilicate catalyst.  Carbamates by reacting cyanic acid with mono- or poly-alcohols having alkyl or aryl radicals of up to 22 carbon atoms, the alcohol being in molar excess.  Allophanates by reaction of the carbamates with excess cyanic acid, or alternatively by having an initial molar excess of cyanic acid over the alcohols mentioned above.  Mono- or di-substituted ureas by reacting cyanic acid with primary or secondary amine.  Carbamyl chloride by either (i) reacting cyanic acid with hydrogen chloride gas, or (ii) reacting an equimolar mixture of cyanic acid and NH3 with phosgene gas.  These reactions may all be performed using the product gas from the cyanic acid preparation, without isolation of pure cyanic acid.
Patent GB-540629-A (GB)
Title: Improvements in or relating to portable frames or lights for horticultural and like purposes
IPC: A01G13/04
Filed: 1940-07-18
Abstract: 540,629. Garden frames. CHASE, L. H. July 18, 1940, No. 11828. Addition to 505,567. [Class 20 (i) ] An improvement in or modification of the invention according to the parent Specification comprises the use of a stop 6 which bears upon the adjacent upper edges of the inclined plates 4, a linkage member 7 to engage the re-entrant angle of the polygonal frame disposed between the plates and depending from spaced points on the stop member, and a bearing member 11, 12 constituting one side of the polygonal frame and adapted to bear upon the stop member.
Patent GB-341358-A (GB)
Title: Improvements in or relating to the treatment of sulphite liquor spirit
IPC: C12C7/06
Filed: 1930-04-15
Abstract: In the distillation of sulphite liquor spirit after fermentation, the first runnings containing aldehyde are conducted either periodically or continuously to fresh mash which is fermenting or is to be fermented.  It is presumed that the aldehyde is converted by reduction into alcohol.
Patent GB-571027-A (GB)
Title: Improvements in or relating to back sights for firearms
IPC: F41G1/17
Filed: 1943-07-23
Abstract: 571,027. Sights for firearms. VESELY, J. July 23, 1943, No. 12034. [Class 119] Relates to back-sights for smallarms of the kind in which a number of arms arranged on a common rotatable member have sighting notches or apertures spaced at different distances from the axis of rotation, and are thus adapted for selective use at different ranges. According to the invention, the sighting-arms (10, 11, 12 in the construction shown) are so arranged on the rotatable member which supports them between side walls 3 of a boxlike casing open at the top, that there is at least one inoperative position of the sight in which no sighting-arm is exposed above the open top of the casing, the arms being thus protected when out of use. Fig. 3 shows the sight in the inoperative position, and Fig. 2 shows the sighting-arm 10 in position for use. The rotatable member, which is a sleeve on a fixed spindle 8, has squared portions 14 acted upon by springs 16 which retain the arms in any position to which they are turned.
Patent GB-170613-A (GB)
Title: An improvement relating to the manufacture of ammonium sulphate
IPC: C01C1/242
Filed: 1920-04-30
Abstract: In the production of ammonium sulphate by passing into a saturator gases which are liable to contain cyanogen compounds, the cyanogen compounds are prevented from reaching the saturator by adding to the ammoniacal liquor to be distilled a polysulphide, or forming a polysulphide in the liquor, for instance by adding sulphur or blowing in air, so as to fix the cyanogen compounds in the liquor as sulphocyanides; or the vapour from the still may be passed over spent oxide on its way to the saturator.  In the case of the direct process, the ammoniacal gas is passed through a washer containing a polysulphide solution.  Specifications 845/71, 16172/12, and 29047/13 are referred to.
Patent GB-579250-A (GB)
Title: Improvements relating to ethyl cellulose moulding compositions
IPC: C08K5/12
Filed: 1943-07-23
Abstract: Resilient thermoplastic material capable of retaining resilience in contact with mineral oil comprises ethyl cellulose with which is incorporated at least 20 per cent of its weight of an ester of phthalic acid or hydrophthalic acid in which each carboxyl group is esterified with a methoxy ethyl or an ethoxy-ethyl group.  Specified esters are the di(methoxy-ethyl) or di(ethoxy-ethyl) esters of phthalic, 1.2.5.6-tetrahydrophthalic or 2.5-dihydrophthalic acids. The material is suitable as a moulding powder for the production by, e.g. hot compression moulding, of resilient components of shock absorbing devices and fluid power transmission systems such as piston rings and cylinder cups.  It may also be employed in the manufacture of valves, gaskets, washers, gland packing and the like.  The material may be prepared by mixing ethyl cellulose with an aqueous dispersion of the ester and subsequently driving off the water, or the components may be dissolved in a volatile solvent or solvent mixture, the bulk of which is removed before moulding, the remainder being removed by a seasoning operation after moulding. Alternatively, the ethyl cellulose and the ester may be dissolved in a volatile potential solvent, i.e. one which dissolves the components only at elevated temperature, the resilient material being recovered by cooling the solution.  Specification 424,250 is referred to.
Patent GB-218060-A (GB)
Title: Improvements in surveyors' levels
IPC: G01C5/00
Filed: 1923-05-04
Abstract: 218,060. Tallack, H. T. May 4, 1923. Levels.-In a surveyors' level provided with a teiescope A carrying a reversible level B and rotatably mounted in a collar C, as described in Specification 185,819, the collar, or a platform on which it is pivotally supported, carries a spigot D engaging in the centre E of an ordinary tribrach or quadbrach levelling head.
Patent GB-966509-A (GB)
Title: Automatic filter screen
Inventor: BLACK HUGH ROBERT
IPC: B01D33/04
Filed: 1962-03-29
Abstract: 966,509. Filters for liquids. H. R. BLACK, C. E. HUTSON, E. STANESA, N. P. KEZAR, W. G. WALSH, J. A. MORRISON, and L. SIMONS, [trading as H. R. BLACK CO.]. March 29, 1962, No. 12127/62. Heading BID. Liquid and solids flowing in at 11, Fig. 2, meet an upwardly-travelling filter screen driven by sprockets 47, the solids being discharged into a receptacle 24 by air jets from an air pipe 105 which is reciprocated transversely of the screen. Filtered liquid passes from within the screen to an outlet box 61, Fig. 1, and passes thence at 62 to a pump 63 for discharge at 64 for re-use. Jet pipes 68, Figs. 1 and 2, and 93, Fig. 2, are connected to pipe 64 to clean the screen and chains respectively. Scum passes over a float-operated weir 77, Fig. 10, into a skimmer housing located in the outlet box 61. Scum-bearing liquid is withdrawn from the skimmer housing at 76, Fig. 1, by suction provided by a further return filtrate flow 72 and is discharged at 75, Fig. 2, for re-filtration.
Patent GB-401195-A (GB)
Title: Improvements in or relating to vacuum cleaners
IPC: A47L9/19
Filed: 1933-04-26
Abstract: 401,195. Vacuum cleaners. ELECTROLUX, Ltd., 153, Regent Street, London.- (Assignees of Inventia Patent- Verwertungs- Ges. ; 10, Herrenacker, Schaffhausen, Switzerland.) April 26, 1933, No. 12170. Convention date, May 7, 1932. [Class 8 (ii).] For indicating the filtering capacity of a dust separator for vacuum cleaners, a membrane is provided which is controlled by differences in pressure set up in an air stream passing through the cleaner due to variations in the filtering capacity of the dust separator and this co-operates with an indicator element. The vacuum cleaner 10 is divided into a lowpressure chamber 15 and a high-pressure chamber which includes the fan and its driving motor. The casing 10 has an opening 20 in which a sleeve element 21 is mounted which has a flange 22 hermetically retained against the casing and its inner end covered by a dished plate 23. A pocket-shaped membrane 24, preferably of rubber, is disposed inside the sleeve 21 and is kept in an extended position by means of a spring 26. The lower part of the membrane is open through the passage 30 to the space 15. Pressure of the spring may be adjusted by axial movement of the block 29. The membrane 24 contacts with a lever 32 which controls the semicylindrical rotatable element 33 disposed in a cover 34 having a window 35 through which its position may be observed. In an alternative form a disc 37, Fig. 5, is placed at the rear of the dust bag 39 and is carried by a partition plate 18 through a spring member 38 which under normal conditions is somewhat compressed. When the bag becomes clogged, the difference in pressure between the chamber 15 and chamber 39 is increased and the bag tends to regain its full length, so that the spring 38 is compressed and the screen 37 axially moved. The movement can be observed through a window 40 in the casing 10 of the cleaner. A pointer 41 may also be employed. In an alternative the dust bag 19 may be itself formed of a resilient or elastic material.
Patent GB-474425-A (GB)
Title: Improvements in valve sacks or bags
IPC: B65D30/24
Filed: 1936-04-29
Abstract: 474,425. Valve bags. MEDWAY PAPER SACKS, Ltd., and SKINNER, H. A. April 29, 1936, No. 12194. [Class 94 (ii)] A valve sack is provided with a sealing piece D, secured to the wall of the sack, preferably to the inside thereof at D<1> and then subsequently bent back outwardly to lie on the outer bag surface, so that in making the diamond fold end closure the sealing piece is folded in with the end and side flaps B, C, to form an incomplete tube projecting laterally from the valve opening and adapted to be turned backwardly upon the bag bottom and secured by stapling, adhesive &c., to seal the valve after filling.
Patent GB-311921-A (GB)
Title: Improvements in or relating to means for measuring the rate of generation of electrical impulses
IPC: H04M1/24
Filed: 1928-04-26
Abstract: 311,921. Coventry Automatic Telephones, Ltd., aud Collyer, J. E. April 26, 1928. Automatic exchange systems.-A means for testing the rate of generation of impulses consists of two preselectors A and B; the former is stepped by a vibrator C whilst the latter counts the impulses. The arrangement can be used to measure the time interval between the impulse and the return of off normal springs in which case the switch B is not required. The device illustrated is wired to double the rate of movement of A after the first 10 impulses and to indicate by lamps the position reached when the apparatus is stopped. If a dial is to be tested it is connected across terminals 10 and 11, operating relay 12 which allows relay 15 and then 19 to pull up. Relay 19 attracts the vibrating armature 20. When the first impulse is transmitted relay 27 pulls up releasing relay 19 and connecting earth to armature 20. The armature swings under its natural periodicity, stepping switch A each time it meets contact 21. After 10 steps the circuit is completed at each half-swing (21 or 22) stepping the switch A at a faster rate. The impulses transmitted by the dial are repeated by relay 12 to magnet 6 which steps the switch B. When the train has been completed, relay 12 holds up, relay 27 falls away and relay 31 pulls up in series with 6 via the bank contacts and wiper 9 of switch B. Switch A is stepped by breaking the circuit of magnet 1 at 17 and lamps connected at 36, 37, 38 or 39 indicate the time elapsing since the switch started, whilst the lamp 34 shows whether more or less than 10 steps have been made by switch B. To reset the key 14 is pressed momentarily, energizing relay 40 which completes circuit for magnet 1 at 28 and 41 and for magnet 6 at 30. Switches A and B return by self-interruption to normal, relay 40 being held energized by its upper winding over wiper 7 until switch B is normal and by its lower winding over wipers 2 or 3 until switch A is restored. If only 10 impulses are to be measured intermediate normal positions can be provided on switch B. Specifications 289,602, [Class 38 (ii), Electric currents, Converting &c.], and 306,990 are referred to.
Patent GB-254249-A (GB)
Title: Improvements in or relating to open end wrenches of the adjustable jaw type
IPC: B25B13/14
Filed: 1926-05-12
Abstract: 254,249. Eck, J. van. Sept. 22, 1925, [Convention date]. Sliding-jaw wrenches. -In an open jaw wrench of the kind having one jaw hinged to the handle and the other jaw slidably mounted relative thereto and connected to the handle by a rod of adjustable length, the jaws are mounted in an inclined position relative to the axis of the handle so that the hinged jaw is nearer the free end of the handle than the other jaw and its pivot nearer the free end of the handle than the connection between the slidable jaw and the adjustable rod, and abutments are provided on both sides of the pivot for the hinged jaw. The jaw 2 is pivoted at 3 to the handle 1 and the jaw I which slides in a guideway in the jaw 2 is connected at 5 to a rod 6 adjustable by a nut 7 and pressed inwards by a spring 10. Abutment surfaces 13, 14 are provided on both sides of the handle. When the handle is moved to the left the resistance of the nut causes it to pivot about the pivot 3, so that the pull on the rod 6 closes the jaw 4 tightly on the nut. Movement of the handle in the reverse direction causes the jaws to open and slip round the corners of the nut. The jaws may be curved and serrated for gripping pipes.
Patent GB-1492827-A (GB)
Title: Microwave apparatus
IPC: H01L29/864
Filed: 1975-03-24
Abstract: 1492827 Semi-conductor diode oscillators WESTERN ELECTRIC CO Inc 24 March 1975 [27 March 1974] 12248/75 Heading H3T [Also in Division H1] A microwave semi-conductor device 11 is packaged in a dielectric housing 15, 20 with first and second leads 13, 17 connected to the same region of the device 11 such that when the first lead 13 is connected through a capacitor 24, 25 to a third lead 29 of the device 11 and the second lead 17 is connected to a load, substantially no reactive tuning current flows through the second lead 17. The device 11 may be a GaAs IMPATT diode or a FET and the load may be a coaxial line 21, 23 to which the leads 13, 17 are connected by conductive rings 18, 19, the ring 18 being coupled to the outer sheath 21 of the coaxial line via metallized rutile capacitors 24, 25 which form part of a reactive tuning circuit. This packaging arrangement permits impedance matching of the device 11 and the load without incurring noticeable parasitic reactances.