baber/WOPTO huggingface dataset:
Patent GB-552204-A (GB)
Title: Improvements in and relating to range finders
IPC: G01C3/22
Filed: 1941-10-16
Abstract: 552,204. Range-finders. LUND, C. A. Oct. 16, 1941, No. 13340. [Class 97 (i)] A range-finder having a known distant height for base comprises a plate 2 formed with an eye aperture secured to a bar or the equivalent 1 on which a disc 5 is both rotatable and slidable. Holes of different diameters are spaced circularly on the disc 5, each numbered appropriately to a known distant height. The disc is rotated to bring a desired hole into sighting line with the eye aperture, and is then moved along the rod until the height of the distant object apparently agrees with the diameter of the hole. The range is then read from a scale on the rod. The holes may be slits having various lengths, and some holes may be used for two different distant heights, the numberings and scale graduations being distinguished by the colours of their markings.
Patent GB-133676-A (GB)
IPC: A63B67/00
Abstract: 133,676. Stewart, S. N. Oct. 5, 1918, [Convention date]. Outdoor games.-A device for use in playing games comprises a holder e for a wooden egg, a potato, or the like, two parallel bars d, a central handle f, and a pole g. The device may be used in an inverted position, and a tin cup or pan may be supported on the end of the pole g. In playing a relay race game, two competing players each carrying a device of the above-described kind run round two stakes driven into the ground starting and finishing at two foot supports or benches.
Patent GB-967262-A (GB)
Title: Improvements in and relating to liquid level electric gaugeswitches
Inventor: GEORGE WALLACE YEWDALL EVELYN
IPC: G01F23/38
Filed: 1962-04-06
Abstract: 967,262. Fluid actuation of switches. BAYHAM Ltd. April 19, 1963 [April 6, 1962], No. 13418/62. Heading H2B. In a float operated electric switch, similar to the arrangement described in Specification 578, 786, a float arm o turns a shaft j through gearing q, r and magnetic coupling s, t, as the level of the liquid lowers the float so that mercury switches a, b, c, mounted on cam followers c<SP>1</SP>, d, e are actuated by cam lobes k, m, k<SP>1</SP>,  m <SP>1</SP> and k<SP>11</SP>, m<SP>11</SP> on the shaft j to close electric circuits. The cam followers c<SP>1</SP>, d, e pivoted on a rod g are moved by fingers h, i straddling the shaft j and engaging cam lobes k, m &c. Initially leads u, v of switch c are connected and may close a circuit to an indicator lamp (not shown). Then as the float drops to position B, switch c is tilted to open the circuit and switch b tilted to close a second circuit, finally when the float is in position C, switch a is tilted to close a third circuit, switch b remaining closed and switch c open.
Patent GB-899826-A (GB)
Title: Improvements in or relating to hydrazinium betanes, to their production, and to polymers obtained therefrom
IPC: B01J41/12
Filed: 1960-04-14
Abstract: A phenol-hydrazine formaldehyde resin is obtained by reacting formaldehyde with a salt obtained by acidifying a betain of the formula <FORM:0899826/IV (a)/1> where Ar represents a phenylene, alkylphenylene, or dialkylaminoalkylphenylene radical, R and R1 which may be the same or different, each represent an alkyl radical (alkyl being defined as a group containing not more than 8 carbon atoms), and n is a whole number, including zero, less than 5.  In an example 0,2 g. 1,1-dimethyl-1-(hydroxy benzyl) hydrazinium betain is converted to the hydrazinium chloride and reacted with 0,2 mls. of 40% formalin to give a polymer useful as an ion exchange resin. Reference has been directed by the Comptroller to Specification 824,357.ALSO:The invention comprises a betain of the formula <FORM:0899826/IV (b)/1> where Ar represents a phenylene, alkylphenylene, or dialkylaminoalkylphenylene radical, R and R1 which may be the same or different, represent an alkyl radical and n is a whole p  number (including zero) less than 5.  Alkyl is defined as a group containing not more than 8 carbon atoms.  The betains may be prepared by reacting chloramine or hydroxylamine-O-sulphonic acid with a phenol of the formula HO-Ar-CnH2nNRR1 and converting the resulting hydrazinium salt by treatment with a base.  The betains may be prepared directly by dissolving the amino-phenol in an organic solvent and passing in a gaseous chloramine-ammonia mixture. Examples describe the conversion of m-diethylaminophenol, dimethylaminomethylphenol, 2, 4, 6-tris-(dimethylamiomethyl) - phenol, m - dimethylaminophenol, 2 - dimethylaminomethyl - 4 - octyl - phenol and hordenine to the corresponding hydrazinium betains.  The betains may be converted to hydrazinium salts by treatment with acids, e.g. mineral acids, dilituric acid or picric acid.  1,1 - dimethyl - 1 - (3 - acetoxyphenyl) hydrazinium acetate is prepared by reacting 1,1-dimethyl-1-(3-hydroxyphenyl) hydrazinium betain with an acetic acid/anhydride mixture.  Reference has been directed by the Comptroller Specification 824,357.
Patent GB-109831-A (GB)
Title: Improvements in and relating to Coin Freed Apparatus.
Inventor: KARCK GEORGE STIRLING
IPC: G07F11/20
Filed: 1916-09-22
Abstract: 109,831. Karck, G. S., and Miles, A. H. Sept. 22, 1916. Delivery of articles stored in piles.- The lowest article of a pile is delivered by a hand-operated slide k after the requisite number of coins has been inserted. Coin action, mechanical connexion and multiple; coin-discharging mechanism.-The insertion of three coins is necessary, the first two being deflected out of the main shoot p into auxiliary shoots q, r, whilst the third passes on down the shoot p into a holder j on a coin lever e. Spindles 7, 7<1> carry, respectively, stops 8, 10 normally projecting into the main shoot p, arms 9, 11, the lower extremities of which normally project into the auxiliary shoots q, r, and stops 13, 16 normally held clear of apertures 14, 17 in the shoot p. The first coin deflected by the stop 8 into the auxiliary shoot q strikes the arm 9 and rotates the spindle 7, thereby withdrawing the stop 8 and moving the stop 13 through the aperture 14 into the shoot p to form a support for the second coin which passes over the shoot q and strikes the stop 10; the second coin acts similarly to the first, passing down the auxiliary shoot r and effecting the withdrawal of the stop 10 and insertion of the stop 16. A cam 6, Fig. 5, on the delivery slide, during the forward movement, rocks a spring-controlled lever v withdrawing studs 2, 3 from beneath the auxiliary shoots permitting the coins to escape and the stops to return to the normal position. The slide k engages the projecting upper edge of the coin in the holder j, thrusts down the lever e, and withdraws a stop g permitting full movement of the slide.
Patent GB-573632-A (GB)
Title: Improved fabric draw-off mechanism for knitting and other textile machines
IPC: D04B15/88
Filed: 1943-08-19
Abstract: 573,632. Feeding webs. TOONE (NOTTINGHAM), Ltd., B., TOONE, R. N., and ALLEN, T. L. Aug. 19, 1943, No. 13531. [Class 100 (i)] [Also in Group VIII] Fabric take-up mechanism for a textile machine comprises two rollers 1, 2, each having a series of resilient projections 7, teeth, prongs or the like projecting from its periphery. The projections on the two rollers may be arranged to register with each other, or one set may be arranged to project into the spaces provided between the other set. The projections may consist of rubber strips, the outer edge of each of which may be serrated.
Patent GB-1429796-A (GB)
Title: Fillers for use in papaermaking educaton
IPC: D21H17/69
Filed: 1972-03-23
Abstract: 1429796 Fillers for use in paper manufacture ASSOCIATED PORTLAND CEMENT MFRS Ltd 25 June 1973 [23 June 1972] 13740/72 Headings C1A and C1N [Also in Division D2] A filler for use in paper making is prepared by gelling a colloidal solution of flour (2-20% of the weight of the filler) in the presence of an uncoated filler. The filler may be acid-reactive, e.g. natural chalk whiting, or may be china clay or titania. The colloidal solution of the flour may be prepared using NaOH or Na silicate and gelled using aluminium sulphate, calcium chloride or borax. The flour has starch as its major constituent and has a content of at least 4% of vegetable protein.
Patent GB-150420-A (GB)
Title: Improvements in scaffold hangers for ladders and poles
IPC: E06C7/16
Filed: 1919-05-31
Abstract: 150,420. Newall, A. May 31, 1919. Ladders.-Ladder brackets are made in three parts, a section B with T-shaped ends which are passed through the ladder A, a similar section C resting against the ladder and loosely riveted at F to the top section B and an adjusting section D provided with a removable pin E.
Patent GB-327880-A (GB)
Title: Improvements in slider-operated separable fasteners
IPC: A44B19/38
Filed: 1929-05-03
Abstract: 327,880. Imperial Chemical Industries, Ltd., and Bennett, J. P. May 3, 1929. Sliding-clasp fastenings.-Stringers 1 and 2 edged with interlocking members 3 are completely separable. A metal end fitting 12 on the stringer 1 contains a hollow rectangular chamber into which is fitted a metal prong 5 which caps the other stringer, the latter being inserted through a slider cam 4 when the cam butts up against the fitting 12. Fittings 12 and 5 are formed into pieces 15 and 7 and secured by rivets and are connected to the teeth 3 by extensions 18 and 10.
Patent GB-561150-A (GB)
Title: Improvements relating to ignition coils
IPC: H01F27/32
Filed: 1942-10-03
Abstract: 561,150. Transformers. ROTAX, Ltd., ROBINSON, E. E., and BARRINGTON, E. W. J. Oct. 3, 1942, No. 13912. [Class 38 (ii)] In an ignition coil of the type having an oil-insulated secondary winding g, the latter is separated from the primary e by a layer f of impervious flexible material such as oiled silk, the edges of which are sealed to collars c attached to or formed integrally with the end flanges b. The secondary is surrounded by a layer of cambric tape i to which is applied a layer of impervious material j such as synthetic rubber sealed to the end flanges and subsequently vulcanized. Oil is then introduced through a hole in one of the end flanges.
Patent GB-1500757-A (GB)
Title: Ferromagnetic chromium dioxides
IPC: G11B5/706
Filed: 1975-04-04
Abstract: 1500757 Ferromagnetic chromium dioxide MURATA MFG CO Ltd 4 April 1975 [19 April 1974 14 May 1974 (2)] 13939/75 Heading C1A Ferromagnetic chromium dioxide is prepared by mixing chromium trioxide with particles of at least one of the following compounds: TiO 2 ; SnO 2 , IrO 2 , H 6 TeO 6 , TeO 2 , TeO 3 , Sb 2 O 3 , RuO 2  or GeO 2  such that the mole ratio of the CrO 3  to the other compound is not less than 1:8, and heating the mixture at from 350 to 450‹ C. at atmospheric pressure in air or oxygen so that CrO 2  is formed on the surface of particles of the other compound or, when the compound is H 6 TeO 6  on the surface of particles of a tellurium oxide formed therefrom. The particles formed may be further treated under the above temperature and atmospheric conditions after mixing with CrO 3  either alone or in combination with one or more of the above mentioned compounds.
Patent GB-567603-A (GB)
Title: Copper base alloys
IPC: C22C9/00
Filed: 1943-08-26
Abstract: 567,603. Alloys. ENFIELD ROLLING MILLS, Ltd., and SYKES, J. Aug. 26, 1943, Nos. 13951 and 16226. [Classes 72 and 82 (i)] Copper-silver alloys for use in the manufacture of electrical contacts, electrodes, and other parts of electrical apparatus include a small percentage of oxygen. The alloys contain silver 5.0-7.0 per cent and oxygen 0.04-0.1 per cent ; the balance being copper. The cast alloys are cooled uniformly to a temperature lower than the eutectic point before quenching and cold forging. The copper may be replaced in part by 0.1-0.2 per cent of nickel or cobalt or chromium.
Patent GB-458730-A (GB)
Title: Improvements in methods and instruments for measuring the albumen in the aqueous humour of the anterior chamber of an eye to be examined
IPC: A61B3/117
Filed: 1936-05-18
Abstract: 458,730. Sight testing apparatus. ZEISS, C., Carl-Zeiss-Strasse, Jena, Germany. May 18, 1936, No. 13989. Convention date, May 25, 1935. [Class 97 (i)] An apparatus for determining the amount of albumen in the aqueous humour of the anterior chamber of the eye comprises a slit lamp which images a slit on the eye, and an optical device for weakening a part of the imaging beam until the intensity of the Tyndall effect produced in the cornea by the weakened part of the beam is the same as that of the Tyndall effect produced in the aqueous humour by the unweakened part of the beam, the amount of weakening providing a measure of the albumen present. The image of the slit 5 illuminated by a lamp 1 and a condenser 2 is projected approximately to the front surface 18 of the eye lens by a lens 4, and the Tyndall effects produced in the cornea 19 and in the aqueous humour in the anterior chamber 17 are observed through a binocular microscope 8. Part of the beam is weakened by a disc 11 rotatable about a pin 12 behind the slit 5 and having slits 13, Fig. 2, which are partially covered by grey glass plates 14 of various transparencies, a portion of each of the slits 13 being left clear, to allow part of the beam to pass unweakened. The disc is rotated until the Tyndall effects are the same as observed in the microscope, and the amount of albumen is estimated by the transparency of the glass then covering the slit, the transparencies being marked on discs 15 and observed through a window 16. Alternatively the absorbing plate may comprise two grey glass wedges movable relatively to each other, or the plates may be carried on a slide movable across the illuminated slit.
Patent GB-563283-A (GB)
Title: Improvements in alternating current control circuit arrangements suitable for resistance welding machines
IPC: B23K11/24
Filed: 1942-10-06
Abstract: 563,283. Automatic control systems for electric welding and other loads. BRITISH THOMSON-HOUSTON CO., Ltd.; and HIGGINS, B. G. Oct. 6, 1942, No. 14027. [Classes 38 (ii) and 38 (iv)] Current.-The current in a welding or other circuit supplied from A.C. mains is rendered independent of changes, e.g. due to variations in the material being welded. Means responsive to the load current produce a phase shift in the voltage applied to the grid of a valve controlling the ignition of a valve through which current is supplied to a welding transformer tend to maintain the current substantially constant throughout a welding period measured in cycles of the A.C. supply. Two back-to-back immersion ignition valves 1, 2 may be controlled by auxiliary circuits B1, B2, comprising auxiliary valves to which firing impulses of variable phase are supplied through a circuit D comprising a valve, controlled by a timing circuit A in series with a valve amplifying the voltage of a firing impulse derived from a circuit C. The circuit C comprises a transformer, Fig. 2, supplying grid voltage of steep wave front to the amplifying valve and fed from a phase shifting circuit comprising a rectifier bridge 327 and condenser in series across a voltage derived from the supply mains. The rectifier varies the phase of the output from this circuit in accordance with changes in load current so as to maintain that current substantially constant; it has connected across it a valve 323, the grid voltage of which is composed of a predetermined negative bias determining a minimum value of load circuit current, and a voltage depending on the difference between a positive reference voltage and a negative voltage derived from a current transformer 301 in the load circuit. The resultant voltage is applied to the grid through a resistance condenser circuit 325 and a time constant of the order of several cycles. The grid voltages: are all supplied through a constant voltage transformer 12 from the mains and the reference voltage, which is adjustable to determine the average load current, is derived through valves 313, 314, the grid circuits of which are controlled by a welding timer circuit A so that it is only present when welding is to take place. The voltage responsive to load current is obtained through a circuit comprising an over voltage relay 307 to render it inoperative on high currents. Specifications 416,374 and 528,247 are referred to.
Patent GB-597419-A (GB)
Title: Stamped sheet metal lock nut
IPC: F16B37/02
Filed: 1945-06-04
Abstract: 597,419. Sheet metal nuts. ADEL PRECISION PRODUCTS CORPORATION. June 4, 1945, No. 14041. Convention date, Dec. 26, 1944. [Class 89 (i)] Resilient sheet metal nuts are stamped with substantially parallel bridge portions 7, 8 spaced from the body 6 as permitted by slots 9, 10, 11, only the edges 12 of the round or square &c. bolt opening being deformed to engage the thread. The bridge portions bow on tightening the nut and provide a locking effect. One of the members to be secured may pass between the parts 6, 7.
Patent GB-884735-A (GB)
Title: Photographic camera with mechanical, photoelectrically controlled shutter retarding mechanism
IPC: G03B7/12
Filed: 1958-05-02
Abstract: 884,735. Photographic cameras. AGFA A.G. May 2, 1958 [May 21, 1957], No. 14157/58. Class 98(1). A camera having a photoelectric exposure meter in which the position of the meter needle is ascertained by an exploring device which automatically sets the shutter retarding mechanism for the correct exposure time, is characterized in that both the retarding mechanism and the exploring device are located in the main camera housing, and not in the shutter housing. The motion is transmitted to the shutter by a Bowden cable. The needle 12 is deflected into a particular position according to the meter reading, and can then be engaged by one of two exploring levers 23, 24 having stepped lower edges. The levers are pivoted at 22, as is also a shutter release lever 25. The pin 22 carries a spiral spring 26 having one end in contact with a lug on lever 25 and its other end in contact with a lug on lever 23. Thus as lever 25 pivots counterclockwise on pressing the camera trigger, it causes, via spring 26, lever 23 to pivot also. Lever 23 takes with it lever 24, since the two are coupled together by a hairpin spring 29. According to the position of needle 12, the stepped lower edge of one or the other of levers 23, 24 engages it, and sets, by means of coupling with a bell-crank lever 38 and pin 39, the appropriate time delay on the shutter retarding mechanism, which is housed (but not shown) between support plates 14, 15. The exploring levers are so designed that lever 23 is applicable for exposure times longer than 1/25th sec., and lever 24 for 1/25th sec. and below. One end of lever 23 has a bent-up end 40 carrying an adjustable screw 41; this operates, via levers 42, 43, a pin 44 which cuts out the escapement of the retarding mechanism and allows the shutter to run down on release. The main driving spring (not shown) is housed between the plates 13, 14, and is tensioned by a gear-and-rack train 19, 20, 21, which may be coupled with a filmadvancing device. The whole assembly is mounted on a supporting arrangement of three generally parallel plates 13, 14, 15, and can form a unitary structure which can be assembled before fitting into the camera, and readily replaced.
Patent GB-376883-A (GB)
Title: Improvements in or relating to electric speed controlling or indicating means
IPC: H02P7/06
Filed: 1931-05-13
Abstract: 376,883. Centrifugal switches; fusible cut-outs. GENERAL ELECTRIC CO., Ltd., Magnet. House, Kingsway, London, and JACKSON, F. MUNTON-, of General Electric Co., Witton, Birmingham. May 13, 1931, No. 14161. [Class 38 (v).] A device for breaking a circuit should the speed of a dynamo or other machine become excessive comprises pivoted hooked arms 13 which are flung outwards by centrifugal force against the action of springs 14 when a shaft 2 rotates so as eventually to engage and rupture or tear away a fuse wire 3 or other conductor stretched between two supports 17 arranged one behind the other. Adjustment may be effected by rotating the supports 17 about the shaft 19 to which they are clamped or by varying the strength of the springs. To prevent an arm 13 bridging the rupture the arms may be axially displaced relatively to one another. In a modification clips may be provided for holding the wire 3 which is then either fractured or torn out of the clips when engaged by the arms 13.
Patent GB-799269-A (GB)
Title: Production of intermediates for the synthesis of reserpine and related compounds
IPC: C07D493/08
Filed: 1957-05-03
Abstract: The invention comprises the compound: <FORM:0799269/IV (b)/1> which is prepared as follows: 1 : 4-dioxo1 : 4 : 5 : 8 : 9 : 10 - hexahydronaphthalene - 5-carboxylic acid ester (prepared from quinone and vinylacrylic acid, esterified before or after the reaction, e.g. with methanol or diazomethane) is treated with an aluminium alkoxide to give the lactone: <FORM:0799269/IV (b)/2> which is converted into the desired compound (II) by successive treatment with bromine and sodium methoxide.  Alternatively the free acid corresponding to the above ester is reduced (e.g. with sodium borohydride) and epoxidized to: <FORM:0799269/IV (b)/3> The latter is converted into its methyl ester or its lactone, either of which gives by treatment with an aluminium alkoxide the compound: <FORM:0799269/IV (b)/4> Treatment of this with sodium methoxide yields (II).  Examples are given of the various steps.  The product is an intermediate for the synthesis of reserpine of which the subsequent steps appear in Specifications 799,270, 799,271 and 799,272.  Details are given of the preparation of vinylacrylic acid from acrolein and malonic acid, and of perbenzoic acid (for the epoxidation) from benzoyl peroxide and sodium methoxide.
Patent GB-817553-A (GB)
Title: Improvements in or relating to methods for measuring magnetic fields
IPC: G01R33/07
Filed: 1956-05-07
Abstract: 817,553. Magnetic tests. SIEMENSSCHUCKERTWERKE A.G. May 7, 1956 [May 6, 1955], No. 14179/56. Addition to 759,047. Class 37. The magnetic properties of a magnetic material are determined by placing a semiconductor adjacent the surface of the material under test, the semi-conductor being of the AIII BV type having a carrier mobility of 6000 cm.<SP>2</SP>/volt. sec. or more claimed in the parent Specification. The semi-conductor may be used as a Hall plate, or its change of resistance with magnetic field strength may be measured. Fig. 3 shows an arrangement in which the material 23 under test is situated between the poles 21a of an electromagnet. Hall plate 25 is placed against one of the faces of the material in an air gap between it and one of the polepieces and produces an output indicative of the induction in the test material. An additional Hall plate 27 placed edge-on may measure the field near the surface of the specimen, i.e. " H " By connecting the outputs of the two Hall plates in opposition the magnetization intensity, B-H, may be measured. Fig. 4 shows an arrangement for examining a magnetic plate 32 for anisotropism. The field is produced by current in a central conductor 33 and the semi-conductor is placed in various radial positions to determine maximum and minimum field strength and thus the preferred magnetic direction of the material. Specifications 719,873 and 797,505 also are referred to.