baber/WOPTO huggingface dataset:
Patent GB-129992-A (GB)
Title: Process of and Apparatus for Recovering Bitumens from Shale and the like.
Inventor: RYAN HENRY DAVID
IPC: C10G1/04
Filed: 1919-07-16
Abstract: 129,992. Ryan, H. D. March 28, 1918, [Convention date]. Mineral oils, extracting; paraffin wax, extracting.-In extracting bitumen, paraffin wax, and other constituents from shale &c., the latter is digested with heavy oil at a temperature too low to effect destructive distillation, and the hot digest or solution is separated from solid residual matter and discharged into a bath of light oil, in order to prevent the deposition of bitumen on cooling. The shale is fed by a screw conveyer 3 to a retort 2 containing a cylindrical screen 5 rotating in a bath of heavy oil 14 at a temperature of about 600 F. ; volatile constituents escape to a condensing coil 50, and refractory solid matter is discharged from an outlet 11. The solution flows through a pipe 16 into a conical tank 17 containing gasolene. Volatilized light oil escapes to a condenser 32 and is returned to the tank through a pipe 21, and the solution meeting an upward current of light oil is carried into tanks 36, 37, 38; these tanks contain heating coils 39, and light oil is again driven off to the condenser 32. Part of the digest is returned to the retort through a pipe 46 and the remainder is withdrawn through pipes 42 for further treatment. Clay &c. is discharged from the tank 17 and conveyed through a heated chamber 25 for the recovery of light oil.
Patent GB-144902-A (GB)
Title: An improved device for spraying ink or the like
IPC: B05B3/02
Filed: 1920-02-05
Abstract: 144,902. Rathbone, R. L. B., and Morton, C. Feb. 5, 1920. Rotary apparatus.-In an ink or colour spraying machine of the rotary type, a casing t, Figs. 1 and 2, is adapted to contain the ink and to enclose the revolving brush b and feed-wheel c, which is caused to revolve by contact with the brush and provided with teeth formed with spearshaped points, which dip into the ink contained in the casing t and deliver a small quantity to the brush b at each contact. To deflect the hairs of the brush and so throw off the ink, the device shown in Fig. 4, consisting of a number of washers w of two different diameters threaded on a pin v, is mounted in the casing at S.
Patent GB-659366-A (GB)
Title: Improvements relating to electric induction furnaces
IPC: H05B6/06
Filed: 1949-07-06
Abstract: 659,366. Induction furnaces. LINDBERG ENGINEERING CO. July 6, 1949, No. 17868. Convention date, Oct. 1, 1948. [Class 39(iii)] In a furnace of the submerged resistor type. including chambers 10, 12 interconnected by two or more conducting channels 16, a difference in level of the metal in the chambers is produced and means are provided for switching the exciting current on and off at regular intervals to produce surges of metal through the channels and so prevent dross accumulation. The exciting winding 18 may be positioned or the channels 16 shaped to cause a difference in level when power is applied. In one embodiment, Fig. 2, the channels 16 have a conical enlargement 16<SP>1</SP> at one end. Alternatively the winding 18 is positioned nearer the chamber 10, or has its centre 18a, Fig. 7, above or below the channel centre 16a. Surges may be produced mechanically by rocking the furnace about a pivot 42, Fig. 8, by an electrically operated solenoid 44 and plunger 47, the furnace exciting current being preferably switched off during the rocking. Means are described for controlling the periods of winding excitation in dependence of the furnace temperature.
Patent GB-1432748-A (GB)
Title: Current supply arrangement for an electronic ripple-control receiver
IPC: H02M7/06
Filed: 1974-04-24
Abstract: 1432748 Protective apparatus ZELLWEGER USTER Ltd 24 April 1974 [13 July 1973] 17878/74 Heading H2H  The direct voltage available at terminals 9, 10 fed from an A.C. source 2, 3 is limited by a circuit arrangement comprising an impedance 4, a capacitor 5 and a full wave rectifier 6 connected in series across the A.C. source 2, 3, with a Zener diode 7 connected across terminals of the full-wave rectifier 6. As shown in Fig. 1, the Zener diode is connected across the D.C. terminals of the rectifier whereas in Fig. 2 (not shown) the Zener diodes in series reverse polarity are connected across the A.C. terminals of the rectifier which is arranged in a bridge formation. In Fig. 1 the series circuit 4, 5, 6 is connected across the A.C. source 2, 3 by way of two further capacitors 8<SP>1</SP>, 8<SP>11</SP>. The impedance 4 can be either resistive or inductive.
Patent GB-389842-A (GB)
Title: Improvements in and relating to the production of coloured products
IPC: C09B47/06
Filed: 1931-06-20
Abstract: Nitrogen- and in some cases metal-containing colouring-matters of complex constitution are obtained by heating an o-cyanoarylamide with a metal or metallic compound preferably of the metals comprising magnesium, copper, cerium, tin, lead, antimony, bismuth, chromium, molybdenum, tungsten, manganese, iron, cobalt, and nickel, with or without suitable solvents.  The use of the following metals and compounds is excluded:--alkali and alkaline earth metals, aluminium, aluminium oxide, titanium oxide, manganese oxides and mercury.  The products which may contain metal may be treated with sulphuric acid to remove it.  According to examples, o-cyanobenzamide, obtainable by treating phthalimide with ammonia to give phthalic diamide, followed by treatment with acetic anhydride, is heated with (1) iron filings, followed by treatment with sulphuric acid to remove combined iron; (2) magnesium powder, and magnesium oxide, followed by sulphuric acid; and (3) with antimony; an example of the conversion of the metal-free compound into one containing magnesium with the use of magnesium in benzophenone is also given.  Tables are given illustrating also the use of nickel, nickel oxide, cobaltic oxide, bismuth oxide, manganese carbonate, litharge, ferrous sulphide, and magnesium oxide and carbonate, and as solvents naphthalenes and anthracenes, A sample has been furnished of a product prepared by treating dichloro-o-cyanobenzamide (obtainable by treating 3 : 4 dichlorophthalic anhydride with urea, followed by ammonia, followed by treating with acetic anhydride), with magnesium oxide in naphthalene.  The use of cupric oxide, stannous oxide, antimony oxide, and ferric oxide is also referred to.  Specification 322,169, [Class 2 (iii), Dyes &c.], is referred to.
Patent GB-258840-A (GB)
Title: Improvements in recording meters
IPC: G01P1/12
Filed: 1926-07-19
Abstract: 258,840. Soc. Anon. Etablissements E. Jaeger. Sept. 25, 1925. [Convention date]. Disc recording apparatus.-In a speedometer or other metering instrument wherein a record is produced on an annular disc the marking member is constituted by a rotatable disc mounted tangentially to the record surface which is itself attached to, and maintained in position on, a driving plate by means of a set of clips. As shown the marking disc 1, which may be of silver, is secured to a long pinion 5 mounted in a frame member 6 and constantly in gear with a worm 7 driven by a part of the meter mechanism. The frame 6, which is provided with heel pieces- 14 surrounding a guide rod 13 on a frame member 12, has a toothed portion 16 gearing with a pinion 17 on the pointer spindle 10. The record' surface 2 which may be paper coated with baryta is fitted over a flange 24 on the front protecting cover of the instrument and is held on its driving plate by three clips 22 entering corresponding notches formed in the paper, one of which clips serves as a driving connection whilst the other two clips hold the paper in position. A spring 15 maintains the disc 1 in contact with the record surface 2.
Patent GB-358544-A (GB)
Title: Improvements in and relating to closets
IPC: A47K11/03
Filed: 1930-06-12
Abstract: 358,544. Dry closets. JACKSON, E. L., 34, High Holborn, London. June 12, 1930, No. 18090. [Class 26.] In a closet in which a vessel to receive the sewage contains a disinfectant, the vessel 1, Fig. 1, is divided by a partition 2 into an overflow chamber 3 and an inner chamber 4 divided into two sections by a perforated plate 5. Pivoted at 7 on the upper edge of the plate 5 is a shield 8 which in its normal position is partly or wholly covered by liquid 9 and is provided with a curved part which fits in a corresponding part in the partition 2. A pipe 12 maintains a constant level of liquid in the compartment 4. After use the shield 8 is turned by a rod and handle and the solid material is deposited in the outer section of the compartment 4, and is thus separated from the main body of liquid, the plate 5 precluding the return of the solid material into that part of the liquid below the shield. A conduit 13 is provided for the discharge of liquid from the chamber 3. In a modification, Fig. 3, a conical partition 18 divides the vessel 17 into a compartment 19 for the liquid, and an overflow chamber communicating by perforations 20 and conduit 21 with a constant level conduit having an overflow aperture in the side of the compartment 19. The shield 36 is secured to the seat 35, is perforated and provided with a spout 39 through which the solid material is transferred to the part 19 when the seat is raised. A spherical plate 24 is located below the shield 36 and is detachably supported by clips 25 on the vessel 17. In a further modification, Fig. 6, which is also operated by lifting the seat, the shield 59 is provided with a lip 58, a curved portion 61 with an aperture 60, and a vertical portion 57 connected to the seat 56 which rests on the edges of an outer vessel 40. The inner vessel 42 which is provided with a handle 47 for removal is also provided with a partition 67 having a curved portion connected to the vessel 42 and a vertical portion on the upper edge of which is pivoted a plate 64 having a curved lip 65 and a weighted end 68. A constant level of liquid is maintained in the vessel 42 by a pipe 49 and an opening 50 which discharges surplus liquid into a second vessel. When the seat 56 is raised the shield 59 is raised and the solid material is deposited in the vessel 42 and, at the same time, the plate 64 moves into a vertical position and prevents the entry of solid matter, paper, &c. into the compartment formed by the partition 67. In further modifications, the vessel 42 is divided into two compartments, one acting as an overflow compartment and is provided with a ventilating flue; the shield may also be pivoted on the edge of a perforated cup which is supported in the compartment containing the liquid.
Patent GB-492474-A (GB)
Title: Improvements in and relating to pneumatic ejector plant
IPC: F04F1/10
Filed: 1937-06-30
Abstract: 492,474. Raising liquids by gas pressure. HOLMES & CO., Ltd., W. C., BENTLEY, H., and HENSHAW, D. M. June 30, 1937, No. 18148. [Class 102 (ii)] In apparatus for raising liquids, e.g. sewage, of the type in which two containers are discharged alternately by compressed air, an air-distributing valve is dispensed with, the air being circulated by a reversible compressor. The latter may be driven through reversible gearing, or by a reversible electric motor. Each container 1 is filled through a pipe 3 with. a sluice valve 6 and check valves 7,8. The containers discharge into a common pipe 5 A rod 16 in each container carries floats 17, 18 and a piston 19 moving in guides 20. An extension of the rod 16 is connected to a crank arm on a spindle 22, which extends outside the casing 13 and carries a double-armed lever 21. One arm of the lever carries a weight 23, while the other is connected to a rod operating a switch in the circuit of the compressor motor. The casing 13 of each container is connected as shown to a reversible rotary compressor 27, preferably of the sliding-vane type. In the position shown the switch of the container 1 is closed and the compressor is rotated to withdraw air from the other container and supply it to the container 1. When the container 1 has been discharged, the floats fall and open the switch, and the compressor stops. The compressor is restarted in the opposite direction when the second container is full and closes its switch. Simultaneous closing of the two switches is prevented by an interlocking bar.
Patent GB-1593225-A (GB)
Title: Method of and means for grinding pairs of gear wheels as spiral or curved toothed bevel gear wheels
IPC: B23F19/00
Filed: 1978-05-08
Abstract: When grinding spiral bevel gears (1, 2) by the indexing method, in each case two tooth flanks at one of the bevel gears (2) can be machined on both sides of a tooth gap in one operation with a cup grinding wheel (5), the grinding flanks (51, 52) of which form an outer bevel ring. To achieve the object of grinding a satisfactorily meshing mating gear (1) in one operation, it is proposed to use a cup grinding wheel (7) to grind the mating gear (1), the grinding flanks (71, 72) of which cup grinding wheel (7) face one another and form an inner bevel ring. To generate width crowning, a cyclic additional movement of slight eccentricity can be imparted to the grinding wheels (5, 7). <IMAGE>
Patent GB-274109-A (GB)
Title: An improved mounting for removable setting stones in articles of jewellery
IPC: A44C17/02
Filed: 1927-07-08
Abstract: 274,109. Bielle, F. L., and Soc. Rochas Fils et Millet. July 8, 1926, [Convention date]. Mounting and setting gems and the like. - A stone c is removably held in a setting a in which it is inserted from the back, against a shoulder a<1 >on the setting, by a frame b which is hinged to the setting. Fastening means may be provided to lock the frame in position. The invention may be applied to a multiple stone setting. The Specification as open to inspection under Sect. 91 (3) (a) comprises also modifications in which the frame is screwed into the back of the setting or connected to it by a bayonet joint. This subject-matter does not appear in the Specification as accepted.
Patent GB-1372880-A (GB)
Title: Skimmers for swimming pools
IPC: E04H4/12
Filed: 1971-10-13
Abstract: 1372880 Swimming pool skimmers G ERLICH 13 Oct 1971 [13 Oct 1970] 18230/74 Heading A4N A skimmer apparatus for an above ground lined swimming pool comprises a tank 1 fixed to the outerside of the wall 35 of the swimming pool and a corresponding face plate 32 fixed to the inner-side of the wall and joined to the tank by bolts 33 extending through the wall 35. Tank 1 is in communication with the pool by a water surface-level passageway 2 in which is mounted a weir-type skimmer. The skimmer comprises a flat plate 8 one side of which is covered with floatable material 13 to bias the plate towards the water surface 4. A bottom edge of the plate is pivoted on a horizontal axis 11. The plate pivots as the water level 4 rises and falls to maintain a level 10 in the housing 1. If the water level falls below the bottom of passage 2 then the weir-plate seals against shoulders 21 and prevents air being sucked through the inlet. Mounted downstream of the weir is filter basket 6 and outlet 3 for filtered water leads via a pump to a return pipe 34 which empties into the swimming pool. A direct by-pass line 7 is provided to enable water circulation when weir-plate 8 is in the closed position. Check valve 18 in line 7 opens at a predetermined pressure differential. The flow from line 17 may enter housing 1 through the side of the filter basket or upstream of the basket Fig.5 (not shown). Line 7 is designed to receive the end of a pool vacuum cleaning hose. The face plate 32 has the by-pass line 17 formed integrally therein and also provides mounting for a light 31. The face plate is separated from the pool wall by a vinyl pool liner (3, 7), Fig.4 (not shown) and the tank 1 is separated from the pool wall by a gasket (39).
Patent GB-530404-A (GB)
Title: An improved electric cable system
IPC: H02G15/26
Filed: 1939-06-22
Abstract: 530,404. Fluid-actuated valves. BRITISH INSULATED CABLES, Ltd., and HOLTTUM, W. June 22, 1939, No. 18236. [Class 135] [Also in Group XXXVI] A cable system with viscous insulating material enclosed in a metal sheath has relief valves and feeding reservoirs connected to the interior of the cable at low and high points, respectively, of the installation to prevent local excessive pressure and to replenish loss of insulator. A suitable relief valve comprises a loaded valve 11 in a chamber 9 of a head 8 the upper part of which is filled with sealing material, a passage 7 leading to the interior of the cable 2 and an outlet passage 14, 12 leading to a moisture-excluding seal, such as a lightly loaded valve 16 delivering to a basin 30 beneath a bell 25.
Patent GB-307674-A (GB)
Title: An improved means of treating castings to be enamelled
IPC: C23D3/00
Filed: 1928-06-23
Abstract: 307,674. Eckhoff, W., and Deussener, L. June 23, 1928. Drawings to Specification. Enamelling ; enamels.-Relates to a method of preparing castings for enamelling, particularly with lead-free enamel, in order to obtain a finished surface free from the blemishes caused by air and moisture enclosed in pores in the castings. According to the invention, the surface of the casting, after it has been cleaned and before the enamel is applied, is treated with a highly inflammable material such as petrol. The material forms a protective layer and prevents the enamel from penetrating the pores of the casting until all the water present has evaporated. The protective layer burns off when the enamel is dried and fired. When dry powdered enamel is used, the powder may be mixed with the inflammable material instead of with water.
Patent GB-1141806-A (GB)
Title: Wrapping paper for photographic material
Inventor: HOOF ALBERT EMIEL VAN
IPC: D21H19/58
Filed: 1965-04-30
Abstract: 1,141,806. Photographic wrapping paper. GEVAERT-AGFA N.V. April 26, 1966 [April 30, 1965], No.18334/65. Heading G2C. A wrapping paper for photographic material comprises a flexible black paper support coated with a layer containing an actinic light absorbing pigment in a polymeric latex and overcoated with a transparent protective layer. The polymeric latex may be polyvinyl acetate, polystyrene, copolymers of styrene, vinyl chloride, vinylidene chloride or alkylacrylates and the pigment may be carbon black, an azo dye or an anthraquinone pigment. The latex layer may also contain a filler such as titanium white. Indicia may be printed on the pigmented layer for identification purposes. The protective layer may be a cellulose ether or ester, polyvinyl acetate, polystyrene, chlorinated rubber or copolymers of vinyl chloride, vinyl acetate, vinylidene chloride or alkyl acrylates and may be applied as a latex. The paper may be used for X-ray films or be attached to a photographic roll film when it also functions as a backing paper.
Patent GB-1496725-A (GB)
Title: Resin composition and method for its use in forming laminates
IPC: C08L33/00
Filed: 1975-05-02
Abstract: 1496725 Laminates SUMITOMO BAKELITE CO Ltd 2 May 1975 [3 June 1974] 18539/75 Heading B5N [Also in Divisions C3 and D1] Prepregs are laminated by hot-pressing to each other and/or to Cu, Al or nichrome foil, and these laminates may themselves be further laminated to form a multilayer printed-circuit board, the prepregs having been made by impregnating cloth or paper of glass, asbestos, and/or carbon fibres, pretreated with a coupling agent, with a solution of a composition comprising by weight: 100 parts (I) polyamino bismaleimide, 10-300 parts (II) polyepoxide, and 5-150 parts (III) copolymer(s) of aromatic vinyl compound(s) with (a) maleic anhydride and/or (b) alkyl maleate(s), or a partial alkyl ester of the copolymer with (a). (III) has number average M.W. 1000-60,000. (II) may have epoxy equivalent 100-4000. The coupling agent may be y-glycidoxypropyltriethoxysilane, or γ-aminopropyltriethoxysilane. Reference has been directed by the Comptroller to Specifications 1,276,646 and 1,190,718.
Patent GB-1140668-A (GB)
Title: Interstage coupling circuit for transistor amplifiers
IPC: H03F1/08
Filed: 1966-04-27
Abstract: 1,140,668. Transistor amplifying circuits. RADIO CORPORATION OF AMERICA. 27 April, 1966 [14 May, 1965], No. 18546/66. Heading H3T. In a transistor amplifier, an interstage coupling includes a capacitor 36, coil 38 and resistor 40 effectively in series between the output of transistor 10 and a point of constant potential, the value of resistor 40 being less than one half the input reactance of the succeeding transistor 50 so that capacitor 36 and coil 38 appear to the output of transistor 10 as a parallel resonant circuit. The low output impedance of the coupling circuit 34 reduces the feedback voltage which arises from the collector-base capacitance of transistor 50. The phase characteristic of the circuit is improved (Fig. 4b, not shown) whilst the impedance transformation provided by circuit 34 stabilizes the gain and bandwidth of the amplifier against variation in input and output impedances of the transistors. Capacitor 36 and coil 38 may be interchanged (Fig. 2, not shown), and either may be variable for tuning purposes. The earthy side of capacitor 36 (or coil 38) may be connected to ground if appropriate bias changes are made. The circuit may be employed as a television I.F. amplifier.
Patent GB-421979-A (GB)
Title: Process for the manufacture of laminated joinery members
IPC: B27G1/00
Filed: 1933-06-29
Abstract: 421,979. Laminated joinery boards. KLINGER, J., and WEISS, F., (trading as ALPINA PANEL & SPERRHOLZWERKE KLINGER & WEISS), Rosenau, near Windischgarsten, Upper Austria, and LUDWIG, R., 25, Gerhardusgasse, Vienna. June 29, 1933, No. 18554. [Class 145 (ii)] A process for the manufacture of laminated joinery boards consists in cutting the sheets of veneer from the peeling machine into sheets which may be of different length in the direction of the grain, but of equal and predetermined. breadth at right angles to the grain, joining these strips end to end in the direction of the grain to form a continuous band of veneer, cutting this band into equal lengths which are stuck together to form a block and then cutting the block parallel to the direction of the grain and at right angles to the plane of the sheets into laminated slabs which are then stuck three or more together with their grain crossed.
Patent GB-1508178-A (GB)
Title: Pulse width modulated relief patterns
IPC: G03F7/26
Filed: 1975-05-02
Abstract: 1508178 Etching RCA CORPORATION 2 May 1975 [22 May 1974] 18554/75 Heading B6J [Also in Division G2] A method of producing a line-width modulated surface relief pattern from an amplitude modulated surface relief pattern comprises (a) coating a substrate 12 with a photoresist 10, (b) exposing the photoresist to a light intensity pattern, (c) developing the photoresist into a continuously variable amplitude modulated surface relief pattern 18, 20 which reveals the substrate surface 24, 26 as a function of the light intensity pattern, (d) etching the substrate to form a wave grating of substantially uniform depth and rectangular cross-section 28, 30 and (e) removing the remaining photoresist. The substrate may be glass coated with Cr, with Cr and Mo or with iron oxide. The etchants specified for the metal, iron oxide and glass are HNO 3 /H 2 SO 4 /water; ferric chloride/HCl; ferrous chloride/HCl/water and HF.
Patent GB-798252-A (GB)
Title: Improvements in or relating to flexible belt conveyors
IPC: B65G23/00
Filed: 1955-03-24
Abstract: 798,252. Belt conveyer driving apparatus. THOMSON, C. June 15, 1956 [March 24, 1955], No. 18605/56. Divided out of 798,251. Class 78 (1). In a belt conveyer, the belt (not shown) runs alternately over groups of idler rollers 10, 11 and intermediate groups of driving rollers 14, the rollers 14 in each group being driven from a motor 26 through longitudinal shafting 16, 17 and bevel gear boxes 20. Flexible couplings are included in the shafting to compensate for unevenness in the floor over which the conveyer is laid, e.g. a mine floor. The driving rollers 14 are constructed as described in Specification 798,251. The idler rollers may be either of the form shown or as described in Specification 738,472.