baber/WOPTO huggingface dataset:
Patent GB-460700-A (GB)
Title: Improvements in or relating to electron valves
IPC: H01J25/70
Filed: 1936-08-19
Abstract: 460,700. Thermionic valves. PINTSCH AKT.-GES., J. Aug. 19, 1936, No. 22836. Convention date, Aug. 19, 1935. Addition to 452,490. [Class 39 (i)] In an ultra-shortwave valve having a hollow space resonator bounded by an inner conductor having a grid portion with which the cathode is coaxial, and an outer coaxial conductor, the distance between these conductors is large except in the excitation region where it is reduced without altering the external shape of the valve. In one form, the resonator is formed by an outer conductor 1 continuous with a cylinder 5 and plate 8, and an inner conductor comprising portions 2, 2<1> joined by discs 13 to a large diameter grid 12. A hairpin cathode 14 is mounted inside the grid and an electrode 9 insulated by members 10 from the conductor 1 forms the third electrode. The conductor 2 is continued to form an aerial 7. Discs 22, 22<1> connected to the cathode or biassed negatively screen the discs 13 from the discharge. In a modification, Fig. 3 (not shown), the grid is of the same diameter as the conductors 2, 2<1> and an annular member secured to the electrode 9 near its middle reduces the distance between the grid and the third electrode in the excitation region. The valve is operated in the Barkhausen-Kurz circuit. Specification 449,920 is referred to.
Patent GB-777660-A (GB)
Title: Improvements in or relating to refractory and/or chemically resistant bricks or shapes
IPC: C04B41/81
Filed: 1955-08-08
Abstract: 777,660. Thermo-aluminic and like chemical reaction processes. WESTER, H., and WESTER, T., [trading as WESTERWERK FABRIKEN HOCHFEUERFESTER ERZEUGNISSE]. Aug. 8, 1955 [Aug. 23, 1954], No. 22837/55. Class 83 (4). [Also in Group XII] A method of producing highly refractory and chemically resistant firebricks is characterized in that the face of a kilned or sintered firebrick which is intended to be exposed to the highest temperature is clad in a pressure mould with a layer consisting of a mixture of the powders of one or more metals or compounds which produce an exothermic reaction, said layer being caused to react by ignition and to be bonded to said brick by the application of pressure either during the course of the reaction or immediately after saidreaction has taken place. The firebrick 2 is placed in a mould 1 and the upper surface of the brick covered with a mixture of powdered chromic acid anhydride and aluminium. The mixture is ignited and while the reaction continues, or immediately after the reaction, a plunger 5 is pressed on to the brick. After cooling, the surface 3 of the brick will have a coating consisting of an agglomerate of aluminium oxide and chromium oxide. Specification 733,390 is referred to.
Patent GB-807765-A (GB)
Title: Improved refractory products
IPC: C04B35/48
Filed: 1955-08-08
Abstract: A porous refractory product with a base of zirconium silicate contains between 8 per cent. and 20 per cent. by weight of alumina, the alumina being added as corundum, calcined or hydrated alumina, bauxite or other hydrated aluminium-containing mineral, natural or artificial aluminium silicate whether roasted or nto, or as a fused product containing silica.  For substances containing alumina and silica the molecular ratio of alumina to silica should be higher than 1, preferably higher than 1,5.  In an example zircon is mixed with an alumina-containing substance, water, a combustible material to produce the porosity, and, as a binder, sulphite residue of the paper industry such as calcium lignosulphonate, and the mix is moulded, dried, and fired at 1500 DEG C.
Patent GB-626257-A (GB)
Title: Improvements in locks
IPC: E05B9/00
Filed: 1947-08-19
Abstract: 626,257. Cases for locks. ASH, J., ROGERS, A., and ROGERS, A. L. Aug. 19, 1947, No. 22938. [Class 44] A lock case comprises a mounting plate 4, Fig. 1, carrying the locking mechanism and attached to a face plate 1 for fixing to the door and a cap 9, Fig. 3, held on the mounting plate by lugs 7 passed through perforations 8 in the cap and turned over. The mounting plate 4 has upper and lower flanges 6 carrying the lugs 7 and the cap 9 has flanges of which the portions 11 opposite the apertures 8 are pressed inwardly to provide recesses into which the ends of the lugs 7 are turned. In another form, Fig. 9, the mounting plate 12 has side flanges 13 under which are slid inturned flanges 14 on the cap. The cap is secured by a screw 15 or by a tongue pressed up from the mounting plate engaging the bottom of the cap.
Patent GB-1378454-A (GB)
Title: Pre-tied nail knots
IPC: A01K91/04
Filed: 1972-05-16
Abstract: 1378454 Knots SCIENTIFIC ANGLERS INC 16 May 1972 [16 July 1971] 22943/72 Heading D1C A tied but untightened nail knot is maintained ready for use by an internal or external cylindrical support, coaxial with the loops of the knot. It is particularly useful for attaching a leader to a fishing line, or joining two strands. A nail knot, preferred for fishing, is formed by holding one end 1 of the leader parallel to a support 4, the other end 2 is wound at least twice around the support and then passed between the loops and the support. The untightened knot may be maintained on the support, through which if hollow, the fishing line 6 may be passed. An external support 7 constituting a shrink film, a wax, resin or metal, may be added or substituted. When the knot is tightened in use the external support, collapses, or can be removed.
Patent GB-1368940-A (GB)
Title: Apparatus for transportation of loads
IPC: B63B27/18
Filed: 1971-12-29
Abstract: 1368940 Unloading ships CREUSOT-LOIRE 29 Dec 1971 [6 Jan 1971] 23150/73 Divided out of 1363250 Heading B8Q The disclosure is substantially identical with that of the parent Specification 1,363,250, but the claims are different.
Patent GB-706937-A (GB)
Title: Apparatus for washing, grading and de-watering material such as sand, gravel, granite, limestone and the like
Inventor: SOUTHALL THOMAS JOSEPH
IPC: B03B5/56
Filed: 1951-10-06
Abstract: 706,937. Washing granular materials. HARDY & PADMORE, Ltd. Oct. 6, 1952 [Oct. 6, 1951], No. 23299/51. Class 82 (2) Material such as sand, gravel, limestone and the like is washed, graded and dewatered in an apparatus comprising a tapering outer drum containing water in its lower part, a reversely tapered screen mounted coaxially for rotation therewith, means for depositing material on the inner screen and means for raising the washed material from the major extremity of the screen and also means for raising washed material, which has traversed reversely to the major extremity of the drum. The drum a runs on rubber-tyred rollers b<SP>1</SP> and is rotated by a chain acting on the sprocket wheel a<SP>2</SP> and carries a tapering screen a<SP>3</SP>. A shoot c supplies the raw material and lifters a' remove the material that does not pass through the screen. Discharge blades a<SP>6</SP> deal similarly with the material which passes through the screen. In operation the apparatus is filled with water to the level f.
Patent GB-1141335-A (GB)
Title: í¸-pregnadiene compounds and their preparation
IPC: C07J13/00
Filed: 1966-05-25
Abstract: 1,141,335. #<SP>4</SP>'<SP>9(10)</SP>-Pregnadiene compounds. MERCK & CO. Inc. 25 May, 1966 [1 June, 1965], No. 23391/66. Heading C2U. [Also in Division A5] Novel steroids of the formulae (wherein R 1  is C 1-5  alkyl and R 3  is aliphatic acyl of at most 6 carbon atoms) are prepared by reducing a 3 - 0R 2  - 13# - R 1  - 17x - acetyl - gona - 1,3,5(10) - trien 17#-ol acetate (wherein R 2  is C 1-5  alkyl) with calcium in liquid ammonia to give a 3 - 0R 2  - 13# - R 1  - 17# - acetyl - gona - 1,3,5(10) - triene, acetylating this to give the enolacetate (the #<SP>17(20)</SP>-20-acetoxy compound), oxidizing this with perbenzoic acid to give the 17α,20-epoxide and saponifying this without isolation to give a 3 - 0R 2  - 13# - R 1  - 17# - acetyl - gona - 1,3,5(10) - trien - 17α- ol, ketalizing this to give the 20-ethylene ketal, reducing this with lithium in liquid ammonia to give the corresponding #<SP>2</SP>'<SP>5(10) - </SP><SP>compound,</SP> treating this with a weak organic acid to give the corresponding #<SP>5(10)</SP> - 3 - one, treating this with bromine in pyridine to give the required 20:ketal, when required hydrolysing this with methanolic hydrochloric acid to give the required free 20-one, and when required acylating this with the appropriate acid anhydride in the presence of p-toluenesulphonic acid to give the required 17-acylate. 3 - Methoxy - 13# - methyl - 17α - acetylgona- 1,3,5(10) - trien - 17# - ol acetate is prepared by the method disclosed in Specification 1,138,460 from 3 - methoxy - 13# - methyl - gone-1,3,5( 10)- trien-17-one.
Patent GB-360833-A (GB)
Title: Improvements in the hardening of steel and its alloys
IPC: C23C10/00
Filed: 1930-08-05
Abstract: 360,833. Hardening steel &c. SOC. D'EXPLOITATION DES PROCDS MAHOUX, 62, Avenue de la Republique, Paris.-(Assignees of Mahoux, A. P. ; 7 bis, Rue d'Asnieres, La Garenne, Seine, France.) Aug. 5, 1930, No. 23444. Convention date, Aug. 9, 1929. [Class 72.] In a process for the surface hardening of steel and its alloys, an oscillatory electric field is produced between a metallic piece and the steel &c. to be treated, the dielectric consisting of an atmosphere adapted to yield carbon or nitrogen or both simultaneously. The steel &c. is kept at a temperature below the lowest of the critical points of the steel &c. Within a metallic container 52 containing hot sand, molten lead, or other metal 53 is removably arranged a container 55 mounted on supports 56 containing the metal piece 57 to be treated. The metal piece is insulated from the container 55 by an insulating plate 58 and a similar plate 59 forming a cover. The gas or mixture of gases forming the dielectric is supplied by a pipe 60 and discharged by a pipe 61. An oscillator of any known type is connected to the piece 57 by a wire 62, the receptacle 52 being earthed by a wire 63. Instead of being dipped in a bath of molten metal &c., the container may be mounted in a furnace, e.g. an electric furnace. The steel alloys which may be hardened contain one or more of the elements, nickel, chromium, aluminium, boron, manganese, molybdenum, silicon, titanium, and tungsten.
Patent GB-262032-A (GB)
Title: Improvements in and connected with chip baskets
IPC: B65D6/08
Filed: 1926-09-23
Abstract: 262,032. Pratt, J. G. Sept. 23, 1926. Fruit baskets.-A " chip " strawberry basket is formed with sharp tapered corners C, the side and end portions being formed from two scored strips B, Fig. 3, with which are interlaced lateral and longitudinal strips E to form the body. A pivoted handle adapted to be turned down to rest on the bottom, is provided.
Patent GB-1466851-A (GB)
Title: Electrochemical etching
IPC: C25F7/00
Filed: 1974-05-07
Abstract: 1466851 Selective electro-chemical etching EDWARD PRYOR & SON Ltd 7 May 1974 [17 May 1973] 23598/73 Heading C7B A method of electro-chemical etching includes the steps of making a stencil apertured to define the mark desired, the apertures having side walls which, in a plane transverse to the direction in which they extend, diverge from the underside at 10-70 degrees, placing the underside in contact with a metallic surface, placing a felt pad 16 moistened with electrolyte over the stencil, compressing the pad by a graphite pressure plate 18 and applying an electric current by means of the pressure plate through the electrolyte. The stencil may be of synthetic plastics, e.g. polyester. For application to a curved surface, the stencil and pressure plate may be correspondingly curved Fig. 5, (not shown).
Patent GB-921606-A (GB)
Title: Improvements in or relating to non-linear circuit arrangements
IPC: H03G1/00
Filed: 1959-07-09
Abstract: 921,606. Transistor amplifier circuits; frequency discriminators. PHILIPS ELECTRICAL INDUSTRIES Ltd. July 9, 1959 [July 12, 1958], No. 23627/59. Classes 40 (5) and 40 (6). [Also in Group XXXVI] A signal bearing logarithmic relation to an input voltage is obtained in the collector-base circuit of a transistor by applying a current representing the voltage to the emitter base circuit of the transistor, the collector-base circuit having no external voltage supply. In Fig. 1 the input voltage is applied through a high resistance 2 to the emitter base circuit of a transistor 3 so that the emitter current on positive half-cycles represents the input voltage. The voltage between emitter and base bears a logarithmic relation to the input voltage and the collector electrode takes up the same voltage as the emitter provided there is no external applied to the collector base circuit. Accordingly the reading on a low-resistance voltmeter 4 bears a logarithmic relation to the input voltage. An emitter bias battery 5 may be provided to increase the range of the circuit. The high input resistance 2 may be provided by a collector circuit of an input transistor and improved performance may be obtained by reversing the roles of the emitter and collector of the logarithmic transistor (Fig. 4, not shown). Fig. 2 shows a frequency discriminator using two circuits such as are shown in Fig. 1 with their inputs connected in push-pull. An inductor 13 provides the high input impedance and capacitors 14 and 15 constitutes an output filter. (Fig. 3, not shown) shows an alternative frequency discriminator using critically coupled coils 9 and 10 and a negative feed-back output amplifier 21, 22 coupled to the logarithm circuits 11, 12. The use of the logarithmic circuit renders the frequency discriminator less sensitive to variations of the amplitude of the input signal.
Patent GB-798232-A (GB)
Title: Method and apparatus for the automatic supply of warp thread heddling machines with single healds
IPC: D03J1/14
Filed: 1955-08-17
Abstract: 798,232. Warp heddling machines. ZELLWEGER, Ltd. Aug. 17, 1955 [Aug. 18, 1954], No. 23716/55. Class 142(1) A separator, comprising a separating blade 20 and a retaining blade 21 reciprocated by a cam 4, separates a heddle from one or other of two rows 6, 7 for threading by a needle 1 reciprocated by a crank pin 5a. The frame 12 carrying the heddles is swung by a cam 16 to present the required row of heddles into range of the separator.
Patent GB-406343-A (GB)
Title: Improvements in the production of sulphur from gases containing sulphur dioxide
IPC: C01B17/04
Filed: 1932-08-24
Abstract: Gases containing sulphur dioxide, especially industrial gases from ore roasting processes containing only small amounts of sulphur dioxide, are treated for the recovery of sulphur by reaction with a solid, liquid or gaseous carbonaceous reducing agent, the resultant gases being passed with a considerable excess of sulphur dioxide over a catalyst to convert the sulphuretted hydrogen, carbon oxysulphide and carbon bisulphide formed during the reduction to sulphur by reaction with the sulphur <PICT:0406343/III/1> dioxide.  Preferably glowing coke is used as the reducing agent and where the content of sulphur dioxide is low, this is first concentrated and then reduced. Excess of sulphur dioxide for the catalytic stage may be furnished by passing the gas quickly through the reduction stage but preferably by by-passing some of the concentrated sulphur dioxide before the reduction stage.  As shown, waste roaster gases containing 5 per cent of sulphur dioxide are passed by a pipe 8 through an absorber 1 where they are washed with an aqueous sulphur dioxide absorbent, such as is described in Specification 400,998, diluent gases escaping by a pipe 9.  The absorbent passes by a pipe 10 to a regenerator 2 heated by steam from a pipe 11, the regenerated absorbent, after cooling, being returned by a pipe 12 to the absorber 1.  The expelled sulphur dioxide passes by-pipes 13<a>, 13 to a preheater 3 where it is preheated to 400 DEG  C. and thence by a pipe 14 to a coke reducer 4 heated to 1100 DEG  C.  From the reducer, the gases and vapours are conducted, together with sulphur dioxide by-passed by a pipe 13<b> and valve 7, by a pipe 15 through the heat exchanger 3 to a catalytic chamber 5, maintained at 600 DEG  to 800 DEG  C, whence they pass to a condenser 6; the catalyst preferred is ferric oxide.  So much sulphur dioxide is added that, after leaving the reaction chamber, the content of sulphur dioxide is at least 8 per cent; the gases containing this excess are returned by a pipe 18 to the absorber 1. Specification 20716/13, [Class 90], also is referred to.
Patent GB-359607-A (GB)
Title: An improved device for use in the air testing of tubular bends, knees, tees and the like
IPC: G01M3/08
Filed: 1930-08-08
Abstract: 359,607. Testing pipe bends &c. for leakage. DUNLOP, J., 424, Amulree Street, Sandyhills, Tollcross, Glasgow. Aug. 8, 1930, No. 23758. [Class 99 (ii).] A bend &c. K is tested for leakage by immersing it in water and supplying compressed air thereto. The bend is mounted in an L-shaped chair 1, Figs. 1 and 4, which is provided with chocks 2, 3 on both limbs to embrace partly the corresponding limbs of the bend and is preferably secured to a clamping plater a by wing nuts 4. The upper end of the bend is closed by a closure 7 carried by a bracket 5 on the plate a, while the other end is closed by a second clamping plate b. The plates a, b are formed integral with swinging arms e, f which are carried by a rotatable shaft mounted on the side of a water bath g, and the testing air is supplied to the bend from a pipe through an opening in the plate b. Fig. 6 shows the invention applied to a tee-piece P.
Patent GB-537403-A (GB)
Title: Improvements in or relating to refining vitaminiferous oils
IPC: C11B3/00
Filed: 1939-08-17
Abstract: 537,403. Purifying fish oils. NATIONAL OIL PRODUCTS CO. Aug. 17, 1939, No. 23772. Convention date, Aug. 30, 1938. [Class 91] The process of purifying animal and vegetable oils which contain a small proportion of free fatty acids by means of activated carbon is applied according to the present invention to fish oils. In the present process the amount of free fatty acid which may be present may not exceed 25 per cent. The treatment is preferably applied by means of a deaerated mixture of carbon and an organic solvent. In the case of the treatment of oils which contain a large amount of free fatty acid. the carbon treatment is preceded by a preliminary treatment with alkali. Organic solvents mentioned as suitable for the process include heptane, ethylene dichloride, trichlorethylene, dichlorethyl ether, ethyl ether, petroleum ether, chloroform and cyclohexane. Fish oils mentioned which may be treated include crude or partially refined fish liver oils derived from cod, ling cod, jew fish, pollack, shark swordfish, tuna, herring, halibut and sardine. Particular examples are given of the treatment of (1) crude halibut liver oil with potash followed by " nuchar XXX" in ethylene dichloride, (2) Blue tuna fish oil with potash followed by " nuchar 2 " in ethylene dichloride. (3) crude tuna oil with potash followed by "nuchar XXX" in ethylene dichloride. (4) Crude fish liver oil with potash followed by "nuchar XXX" in heptane. (5) Crude halibut liver oil with "nuchar XXX" in heptane followed by a treatment with potash. (6) Crude swordfish liver oil with "nuchar XXX" in ethylene dichloride followed by a vacuum distillation.
Patent GB-689122-A (GB)
Title: Improvements in or relating to bell-shaped washing devices
IPC: D06F15/00
Filed: 1950-09-29
Abstract: 689,122. Washing-dollies. BAUMANN, L. Sept. 29, 1950. [June 18, 1949] No. 23830/50. Class 138 (ii). A bell-shaped washing-dolly comprises inner and outer bells 1, 2 enclosing a space 3 which narrows towards the top whereby upon immersion in washing lye air pressure in the annular chamber becomes higher than that inside the dolly and turbulence is promoted by air passing through perforations 5. This pressure difference and turbulence are increased by making the total area of the perforations 5 less than that of the lower perforations 7.
Patent GB-278873-A (GB)
Title: Non-slip horse shoe
IPC: A01L1/02
Filed: 1927-06-23
Abstract: 278,873. Oldridge, E. H. R. June 23, 1927. Integral calks, treads, and hoof-fitting surfaces. -A horseshoe is formed with one or more bluns or square-topped ridges and one or more ridges of triangular section, all extending entirely round the shoe. Several forms are shown, b being the outer ridge in each case.
Patent GB-475441-A (GB)
Title: Improvements in and relating to metal skeletons or frames for writing cases, manicure sets, handkerchief or tie containers, note cases, cigarette cases and the like
IPC: A45C13/04
Filed: 1936-09-01
Abstract: 475,441. Hinges. BELLAU, H. Sept. 1, 1936, No. 23975. [Class 65 (ii)] [Also in Groups XVII and XV] A writing case, manicure-set case, handkerchief or tie container, note case, cigarette case, &c. is made from a frame consisting. of two U-shaped elements a, b secured together at their bases by split tubes a' secured to member a and encircling member b, the two members being urged outwardly by a coil spring c. A runner d serves to draw the arms together. Portions a<2>, b<2> serve for the attachment of the cover.
Patent GB-140330-A (GB)
Title: A device for testing the presence of mind of personnel and particularly of personnelto be occupied in traffic service
IPC: A61B5/18
Filed: 1919-09-30
Abstract: 140,330. Oberschlesische Eisenindustrie Akt. Ges. fur Bergbau-und H³ttenbetrieb. March 21, 1919, [Convention date]. Testing mental aptitude.-In order to test a person's presence of mind, more particularly in reference to traffic conditions, a representation of a tramcar running on rails is carried by an endless band, and a spot of light can be thrown in or near the path of the car by an independently-' worked projector. The person under examination, by means of handles, can control the motor which drives the endless band and also a brake on the motor shaft, and his reaction time is recorded by an electric chronograph. Over a screen 1 passes an endless band 2a carrying the representation of a street car 2. The band is operated by an electric motor 5 acting through the shaft 4<a>, which carries a fly-wheel 17 and a centrifugal governor 15. The motor is started by a handwheel 7, and a brake can be applied by the handwheel 8. A spot of light, representing an obstruction, can be thrown into the path of the car 2 by manipulating the lantern 6, which has a contact 10 travelling over a hemispherical screen 11 corresponding to the screen 1. There are metallic bars across it corresponding to the lines 3 which represent the rails on which the car moves. The frame of the screen 11 is also metallic, so that when the contact 10 touches it, a circuit is closed to show a chrometrie chart 9, the time when the light is first seen on the screen 1, i.e. the time when it reaches the danger zone. If the light passes on to the rails, the time of this occurrence is also charted. The position of the car at such a time is shown on strip 16 through the medium of a contact 14, the same circuit effecting a mark on the strip which is chemically prepared. The time of the application of the brake is recorded on the chronographic chart through the governor 15. A predetermined spot at which the light shall appear can be arranged for by a contact 13 in front of the screen 11. When the contact 10 meets the contact 13, a circuit is completed, and the spot is marked on the strip 16 and the time recorded on the chronographic chart. The fly-wheel 17 gives the effect of running a vehicle under momentum, so that the length of the braking path may be varied by a ,stronger or weaker application of the brake.