baber/WOPTO huggingface dataset:
Patent GB-815594-A (GB)
Title: Improvements in or relating to the densimetric separation of solid materials
IPC: B03B5/38
Filed: 1955-10-27
Abstract: 815,594. Washing granular materials. DOUY, A. Oct. 27, 1955 [Nov. 20, 1954], No. 30814/55. Class 82(2) A sink and float apparatus for producing three fractions comprises two separating drums (1, 1<SP>1</SP>) disposed on opposite sides of a tubular feed member III with a feed shoot (6) for raw materials and rotated about a common axis (Y-Y<SP>1</SP>) by the same mechanism (DM), each drum being surrounded by an enclosure (4, 4<SP>1</SP>) rotatable therewith to serve as dense liquid container and provided with a bucket wheel (Pa, P<SP>1</SP>a) for returning the drained separatory liquid into the associated drum. As shown, the containers and associated drums are driven by a common drive DM while raw material fed via shoot 6 enters drum 1 as a flow #1 and is separated into a light fraction which leaves at L and a heavy fraction SM which is carried up by perforated blades 2 to shoot 11 and through the intermediate tubular member III as a flow f2 into the second drum 1<SP>1</SP>. Wash liquid drained through screen Cr flows as stream fL to the bottom of container 4 and is raised by bucket wheel Pa to enter member III as a stream #<SP>1</SP>1 and join the raw material to re-enter the drum 1 with the flow #1 A similar set of movements occurs in the second drum 1<SP>1</SP> which has a denser separatory liquid, thus the intermediate fraction M discharges on screens Cr<SP>1</SP>, T#2, and at LM ,  the heavies S are raised by blades 2<SP>1</SP> to enter shoot 11<SP>1</SP> and be discharged on screen T#1and at LS; while separatory liquid drained from the screen is raised by bucket wheel P<SP>1</SP>a to enter member III as a stream #<SP>1</SP>2 to join the fraction SM and re-enter drum 1<SP>1</SP> as the stream #2. Fig. 2a shows the inter mediate means III as seen from the drum 1 to which it attaches by the flange 5a, the vertical wall 10 serving to separate the feed spouts 8, 9 by which the respective dense liquids re-enter the drums.
Patent GB-689626-A (GB)
Title: Improvements in or relating to hot-gas reciprocating engines and refrigerating engines operating on the reversed hot-gas reciprocating engine cycle
IPC: F02G1/05
Filed: 1949-12-01
Abstract: 689,626. Refrigerating. NAAMLOOZE VENNOOTSCHAP PHILIPS' GLOEILAMPENFABRIEKEN. Dec. 1, 1949 [Dec. 4, 1948], No. 3087/49. Class 29 [Also in Group XXVII] In a closed cycle refrigerating engine, operating on the reversed hot gas engine cycle, having at least one hot space and at least one cold space the volumes of which are influenced by piston-like members moving with relative phase difference and comprising means for varying the amount of working medium taking part in a cycle of operations, a piston rod operative to drive one of the piston-like members is provided with an internal duct which permits a periodic communication between the working space of the engine and a second space containing working medium. Hot gas engines are described. In Fig. 1, a working space beneath a piston 3 is connected with an auxiliary space (not shown) by means of a duct 5 in a piston rod 4 and port 6 each time the end of the duct communicates with the port. The working space is connected by a duct (not shown) through a cooler regenerator and heater to a space above a piston in another cylinder, the figure representing, for example, part of a double-acting engine. In a modified engine, Fig. 3, a displacer piston rod 15 slides within a piston 13 and comprises passages 20, 22 and a port of 19. A further passage 18 in the piston 13 serves at a predetermined period of the piston movement to interconnect the port 19 and the passage 22 and thus connect a working space of the engine with an auxiliary space (not shown), the passage 20 communicating with this auxiliary space through a flexible tube. The pressure in the auxiliary space may be varied in known manner. Where rapid control is required the interconnection is established at substantially the highest pressure in the engine. The tube may be connected by means of a distributer cock to spaces of mutually different pressures.
Patent GB-766327-A (GB)
Title: Penicillin salts of esters of 4-aminosalicylic acids
IPC: C07D499/24
Filed: 1951-09-18
Abstract: A penicillin salt of a beta piperidinoethyl ester of general formula <FORM:0766327/IV(b)/1> in which R3 is hydrogen or an alkyl group containing not more than four carbon atoms, is prepared by reacting a penicillin with the appropriate piperidino ester.  The penicillin is the free acid, or a salt such as sodium or potassium penicillin, and may be in any form, e.g. penicillin G, F, dihydro F or K.  The ester is the free base, or a salt with an organic or inorganic acid, e.g. hydrochloric acid, or N-oxide or N-hydrated oxide.  Mixtures of esters and/or penicillins may be reacted.  The reaction is carried out in the presence of a solvent as in co-pending Specification 766,325.  The salts may be used in the purification of penicillin from, e.g. organic solvent extracts of fermentation broths. Specification 766,326 is referred to.
Patent GB-961192-A (GB)
Title: Improvements in or relating to electric amplifiers
IPC: H03G1/00
Filed: 1959-09-09
Abstract: 961,192. Automatic gain control. GENERAL ELECTRIC CO. Ltd., and L. HEALD. Sept. 8, 1960 [Sept. 9, 1959], No. 30856/59. Heading H4R. In an arrangement for effecting automatic gain control with negligible phase shift, amplifier stages 1, 2, 3 have networks 4, 5, 6 connected in shunt, each network comprising a transistor 8 having its base connected to the signal path, a capacitor 18 between its emitter and earth and a capacitor 15 between collector and base. The emitter bias is varied by a control signal applied to lead 7 to vary the shunting effect of the transistor. The control signal may be derived from the output of the amplifier.
Patent GB-1320836-A (GB)
Title: Process for the manufacture of vic-triazoles
IPC: C07D249/06
Filed: 1971-07-01
Abstract: 1320836 Vic-triazoles CIBA-GEIGY AG 1 July 1971 [3 July 1970] 30927/71 Headings C2C and C2P [Also in Division D1] Vic-triazoles of the formula wherein R 1  is alkyl, or a substituted or unsubstituted aryl group; R 2  is a free or esterified carboxyl group, a free, alkyl- or aryl-substituted carbonamide group, a phosphonic acid alkyl ester group, the sulphonic acid group or the sodium salt thereof, an alkylcarbonyl group, a substituted or unsubstituted arylcarbonyl group, an alkylsulphonyl group, a substituted or unsubstituted arylsulphonyl group, an alkyl group or an unsubstituted or substituted aryl group, or R 1  and R 2  together is a group; R is a substituted or unsubstituted aryl group or arylene group and n is 1 or 2, are prepared by reacting 1 mole of a compound of the formula with at least 1 mol. of ammonium acetate and either 2 to 2À5 moles of a cupric salt or air and a catalytic amount of a cupric salt, in a solvent at a temperature of from 50‹ to 150‹ C. Novel compounds having the first formula given above are those wherein R 2  is the sulphonic acid group or sodium salt thereof or a phosphonic acid alkyl ester group. The ammonium acetate is preferably used in an amount of from 1 to 15 mols. per mol. of the starting compound of the formula given above, the cupric salt is suitably cupric chloride dihydrate, cupric sulphate pentahydrate, cupric bromide or cupric acetate monohydrate, and the solvent is suitably water, a (C 1 -C 6 ) alcohol or a mixture thereof. The novel compounds may be used as optical brightening agents.
Patent GB-256107-A (GB)
Title: Improvements relating to the production of fuel mixtures
IPC: C10L1/04
Filed: 1925-12-08
Abstract: 256,107. Butler, T. H., Robinson, H. W., and Parkes, D. W. Dec. 8, 1925. Drawings to Specification. Liquid fuel.-Fuels consisting of stable homogeneous mixtures of pitch and petroleum residue are obtained as the still residues when mixtures of coal tar and heavy petroleum or asphaltic fuel oil are distilled up to 300-400‹ C. with or without steam, reduced pressure, or both. Petroleum fuel oil may be added to the products, and the reduction in stability may be lessened by addition of solid coal tar hydrocarbons such as those of the naphthalene and anthracene series. In an example, 100 tons of coke-oven tar and 60 tons of Mexican fuel oil of 0.950 sp. gr. are distilled at 370‹ C., until 60 tons distil over. The residue is solid at atmospheric temperatures but liquid at about 125‹ C. Specification 261,907 is referred to.
Patent GB-603063-A (GB)
Title: Improvements in or relating to conveyor belts
IPC: B65G15/34
Filed: 1945-11-19
Abstract: 603,063. Conveyer belts. PASTOOR, K. Nov. 19, 1945, No. 30979. [Class 78 (i)] A conveyer belt, particularly for a mowing and binding machine, is provided with transverse rubber strips secured by vulcanizing. The belt may be formed of textile fabric coated or impregnated with rubber on one or both sides.
Patent GB-963903-A (GB)
Title: Hydraulic anchoring apparatus for a conveyor situated in front of the coal face
IPC: E21F13/10
Filed: 1960-09-08
Abstract: 963,903. Jacks for advancing mine face conveyers. GEWERKSCHAFT EISENHUTTE WESTFALIA. Sept. 8, 1960 [Sept. 9, 1959], No. 31016/60. Addition to 928,184. Headings B8A and B8J. The apparatus of the parent Specification for advancing a conveyer towards the mine face is modified in that the cylinder 21 of the ram 20, 21 for advancing the conveyer 11 is pivotally mounted on the strap 27 connecting roof-supporting frames 18, 23, and the piston rod 21 projects from both ends of the cylinder and is located between plates 22 on a T-section rail 19 pivotally connected by pins 19<SP>11</SP> to the roof support frame 18. The frame 23 comprises a base plate 24 and hydraulic props 25, 26 and is connected to the strap 27 by a ram 31, 32, the cylinder 31 of which is secured to the frame and the piston rod 32 being pivotally connected to one end of the strap. The other end of the strap 27 is provided with rollers 28 running on the flanges of the rail 19 and mounted on an axle extending through a slot 29 in the web of the rail. The conveyer can be moved parallel to the mine face 36A by step-by-step movement of the frames 18, 23 under the action of ram 31, 32 as described in the parent Specification.
Patent GB-334421-A (GB)
Title: Improvements relating to inlet valves of internal combustion engines
IPC: F01L3/06
Filed: 1929-10-12
Abstract: 334,421. Gardner & Sons, Ltd., L., Gardner, J., and Gardner, J. H. S. Oct. 12, 1929. Valves. - An inlet valve a is provided with a raised platform-like baffle b extending over the side of the valve head adjacent to the inlet passage e to mask the inlet opening on that side of the passage, the baffle being so arranged that the valve orifice remains closed on the side adjacent the baffle throughout the lift. The baffle may be formed separately from, or integral with, the head. The inlet passage e is arranged tangentially to the cylinder bore to promote turbulence within the combustion chamber. The clearance space near the unbaffled portion of the valve seat is increased by an eccentric recess h to facilitate gas flow past the valve, the portion i of the recess which is remote from the baffle being tangential to the cylinder bore.
Patent GB-743849-A (GB)
Title: Improvements in or relating to cold cathode glow discharge tubes
IPC: H03K29/00
Filed: 1952-12-08
Abstract: 743,849. Cold-cathode tubes. TELEFONAKTIEBOLAGET L. M. ERICSSON. Dec. 8, 1952 [Dec. 8, 1951], No. 31115/52. Drawings to Specification. Class 39 (1). The de-ionizing time of a cold-cathode glow discharge tube having two or more electrodes is reduced by providing a conductive coating on the outside of the tube envelope or a screen closely surrounding the envelope, the coating or screen wholly or partly covering the envelope and being connected directly to the cathode or being arranged for connection to a source of potential which is constant in relation to the cathode potential and by providing the tube with a filling consisting of a mixture of at least one rare gas and at least one non-rare gas. A table is given showing the de-ionizing times obtained with and without a coating for tubes having a filling of Ar, Ar + 10 per cent H 2  and Ne + 1 per cent Ar + 10 per cent H 2  at pressures varying from 6.5 to 51 mm. of Hg. Reference is made to the prior art of adding H 2  or Ar and Hg in small quantities to Ne and He in dim-glow-tubes to lower the ignition voltage. Specification 639,827 is referred to.
Patent GB-950091-A (GB)
Title: Improvements in and relating to refrigeration and refrigeration apparatus
IPC: F25D17/06
Filed: 1960-09-09
Abstract: 950,091. Refrigerators. PHILCO CORPORATION. Sept. 9, 1960 [Sept. 9, 1959; Jan. 4, 1960], No. 31142/60. Heading F4H. A refrigeration apparatus for preserving fresh foods at a uniform temperature in an atmosphere free from air movements comprises an insulated storage enclosure 66 having a metal liner 62 portions of which form the respective rear and bottom walls 81, 82 of an enclosed chamber 80, the side walls 83 of which comprise metal partitions extending from the rear wall 81 and spaced inwardly of the side wall liner 62. The chamber door 85 and top wall 84 may be made of glass. The enclosing rear wall 81 has an aperture 90 in its upper region, openings 103 in its lower corners and an opening 106 overlying a grill 107 behind which a fan 108 is positioned. A plate 91 having vents 92 overlies the aperture 90. An evaporator coil 86 is provided adjacent the aperture 90. A concave panel 96 having peripheral flanged portions 97 engages confronting outer surface portions of the rear wall 81 and has regions of concavity presented towards the aperture 90 and the openings 103, 106. U-shaped rib means 98 extend transverse to the rear wall 81 and the panel 96 and have an open upper portion in the region of the evaporator 86 and a loop portion disposed along the periphery of the opening 106. The fan 108 withdraws air from the enclosure 66 through the opening 106 and forces it upwardly between the rib means 98 over the evaporator 86. One portion of air is caused to flow through the plate vents 92 and a second portion of air is directed downwardly between the rib means 98 and flange portion 97, the second air portion thereafter being caused to flow in high heat exchange relation with the enclosure rear wall 81, out of the openings 103 and thence over the chamber sides 83 to return to the enclosure 66 via louvres 105. The evaporator 86 cools the air to a temperature just above the freezing temperature of water in the food, thermostatic means being provided for controlling the cooling means. Apparatus for testing the effect on food of various humidities at 45‹, 39‹ and 33‹ F. respectively incorporates a thermocouple and an electric hygrometer sensing element.
Patent GB-777265-A (GB)
Title: Improvements in tipping wagons
IPC: B60P1/28
Filed: 1954-10-28
Abstract: 777,265. Heated tipping wagons. LAWRENCE, H. M. Jan. 23, 1956 [Oct. 28, 1954], No. 31148/54. Class 107  A tipping wagon for distributing a hot mixture of aggregate and tar or the like having a lagged body and a heater, has the latter adapted to be connected to a source of heating fluid or an electrical supply to maintain the heat when the wagon is standing with -its engine off, the exhaust gases from the latter normally being the heating medium. The heater is built into the bottom of the tipping body and comprises a flat plate 17 and a corrugated plate 16 united together, the conduits thus formed being supplied with heated fluid by headers 18, 19, the former having an exhaust gas inlet 20 (see Specification 735,205) and a steam inlet 22 normally closed by a cap 23. Gas outlets 21 are fitted to the other header. In an alternative construction an electric heater is fitted to the flat plate 17 and the corrugated plate interrupted to accommodate it. According to the Provisional Specification oil, solid fuel, or electrical heaters can be used to heat air tor liquid which is then passed through the heater.
Patent GB-671699-A (GB)
Title: Improvements in or relating to imparting flame resistance to cellulosic textile materials
IPC: D06M11/44
Filed: 1949-12-06
Abstract: A flame-proofing composition comprises an aqueous dispersion of a polymer containing at least 20 per cent by weight of combined halogen and an oxide of tin, titanium, antimony, or bismuth.  The polymer may be polyvinyl or polyvinylidene chloride or bromide, or a copolymer of vinyl chloride with vinylidene chloride, methyl, ethyl, propyl, or butyl acrylate.  The composition may also include a water-soluble salt of an oxyacid of pentavalent phosphorus and one or more of urea, biuret, ammonium cyanate, and ammonium dicyanimide.  Ammonium hydroxide may be added as a stabilizing agent.  Further optional additions are a polyalkylene polyamine such as triethylene tetramine, tetraethylene pentamine, or hexamethylene tetramine, calcium carbonate, magnesium oxide, glow-retarding substances such as zinc borate or phosphate, zinc ammonium phosphate, stannic phosphate, phenyl diamido phosphate, or melamine pyrophosphate.  The water-soluble phosphate may be a salt of orthophosphoric, metaphosphoric or pyrophosphoric acid, a guanidine phosphate such as monoguanidine orthophosphate being specified.  The metal oxide, e.g. antimony trioxide, is dispersed in water with the aid of a dispersing agent such as a sodium or potassium salt of a condensation product of an aldehyde such as formaldehyde with a naphthalene sulphonic acid. The dispersion passed through a colloid mill to reduce the particle size to 1 micron or less, and is then mixed with a dispersion of the polymer.  The ammonia-stabilized dispersions may be sold as pastes or semi-solids and diluted when required for use.
Patent GB-948850-A (GB)
Title: An improved device for cleaning slatted structures
IPC: A47L4/00
Filed: 1961-08-31
Abstract: 948,850. Suction cleaners. J. C. DELACRETAZ. Aug. 31, 1961, No. 31405/61. Heading A4F. A cleaning device, more particularly for slatted structures such as Venetian blinds, comprises a hollow body 5, having a connector 6 for attachment to a suction source, two or more hollow members 7 extending from the body 5 and holding a pad 8 of soft resilient material extending through openings 9 on opposite sides thereof. In the illustrated embodiment, the members 7 are curved, to follow the shape of the slats, and each pad 8 is clamped to a bar 16, the ends of which engage in slots in the body 5 and the end caps 10. The caps 10 are held on the ends of the members 7 by the flanges 11 and grooves 12.
Patent GB-1511329-A (GB)
Title: Tools for inserting animal identification tags
IPC: A01K11/00
Filed: 1975-07-28
Abstract: 1511329 Surgical cutting appliances E B RITCHEY 28 July 1975 [30 July 1974 5 Aug 1974 10 Oct 1974 10 Feb 1975] 31429/75 Heading A5R [Also in Division B4] A tool for slitting an animal's ear and inserting a tag of the type shown in Fig. 2, comprises an elongate member having a pointed skin-piercing end 26 for forming a slit in the animals ear, a slotted portion spaced from the end 26 and intended for holding the wings 10, 12 of the head of the tag in a folded position during passage through the slit and a handle portion 22. In the embodiment of Fig 7 there are two slots on either side of a central bar 36 the forward end of which is bent upwardly to provide a recess in which the tip 14 of the tag is received to prevent catching on the ear on passage through the slit. In the embodiment of Fig. 9 the tool is of generally tubular form and of oval crosssection the wale being cut away towards the piercing end to form a slot 60; in use the tag overlies the tool, the wing portions being folded through the slot 60 into the interior of the tool (Fig. 10 not shown). In other embodiments (Figs. 12-19 not shown) one or both of the slots is or are longer than the tag wings and the central bar is arranged to provide a camming action to facilitate release of the tag head from the tool. Release of the tool may be effected by movement in a reverse direction after piercing the ear and inserting the tag head or by continuing the movement to pass the tool completely through the ear.
Patent GB-863393-A (GB)
Title: Controlling scale formation in evaporators
Inventor: HODDINOTT PETER FROST
IPC: B01D1/00
Filed: 1958-10-02
Abstract: <PICT:0863393/III/1> A multiple-effect evaporating plant of the vapour compression type is divided into a plurality of sections connected in parallel between a source of liquid to be evaporated and the inlet of a vapour compressor, and is provided with heat exchange elements connected in parallel with the outlet of the vapour compressor, means being provided for selectively isolating the sections and descaling the heat exchange element of an isolated section by cold-shocking or soaking without interrupting the operation of the entire plant.  In the plant shown, for the distillation of pre-heated sea-water, the sections 1 are connected in parallel to each of lines 2, 3, 4 and 5 for brine suction, hot sea water feed, cold sea water feed, and drainage respectively.  Each section 1 contains a heat exchange coil 8 between line 9 leading from the outlet of the compressor 7 and line 10 leading to a distilled water collector.  The steam produced in each section is led off by line 6 to be compressed and utilized to heat the next charge of liquor before being removed from the plant.  When any section is to be shocked valve 14 is opened and valves 15, 11, and 12 are closed. Valves 16, 13 and 14 are then operated to effect the shocking, after which a fresh charge of hot sea water is introduced and heated by heat exchange element 17 through which exhaust gases from a diesel or other engine are passed.  Soaking is effected by closing valves 11, 12, 14, 15 and 16 and leaving a coil 8 to soak, after which element 17 restores the water to operating temperature.  Soaking may precede shocking, if desired. Where soaking only need be effected the cold sea water feed 4 and valves 14 are omitted.
Patent GB-684491-A (GB)
Title: Improvements in or relating to the control of electric servo-motors
Inventor: WRATHALL ROBERT WILLIAM
IPC: G05D3/14
Filed: 1949-12-08
Abstract: 684,491. Control of D.C. motors. NATIONAL RESEARCH DEVELOPMENT CORPORATION. Feb. 5, 1951 [Dec. 8, 1949], No. 31610/49. Class 38 (iii) [Also in Group XXXV] Relates to electrical servo-systems employing amplifying generators with one or more stages of amplification where the servomotor voltage provides a positional, velocity, or acceleration re-set or feedback. In order to prevent spurious oscillation or hunt in such systems, the amplifying generator is provided with an additional winding on the poles carrying the exciting winding and the E.M.F. generated in the said additional winding is fed into the amplifier in series with and in opposition to the voltage induced in the armature and the compensating winding (where provided) by the transformer coupling with the exciting windings. As shown, a controller 1 provides an input signal which is amplified in a thermionic amplifier 2 and then passed to variator windings 3 of a metadyne generator 4 which supplies a servomotor 5. A voltage proportional to the back E.M.F. of the motor is derived by means of a bridge net-work formed by resistors 6, 7, and the resistances of the armature of the servomotor and the metadyne compensator winding 8. Adjustment of potentiometer 9 eliminates the I.R. voltage drop of the servomotor armature. The additional winding is shown at 10 and the voltage generated in this winding is introduced in series with the output from the bridge network by means of potentiometer 11. The balance between the two opposing voltages is obtained by adjustment of potentiometer 11, after potentiometer 9 has been adjusted, final adjustment of the total quantity fed back to the amplifier 2 being made by potentiometer 12.
Patent GB-777231-A (GB)
Title: Improvements in hydraulic transmission systems for winches
IPC: B66D1/08
Filed: 1954-11-02
Abstract: 777,231. Rotary engines. HYDRAULIK AKTIESELSKAPET. Nov. 2, 1954 [Nov. 28, 1953], No. 31659/54. Drawings to Specification. Class 110 (2). [Also in Group XXIX] The subject-matter of this Specification is substantially the same as that described in Specification 777,230, but the claims differ.