baber/WOPTO huggingface dataset:
Patent GB-1404134-A (GB)
Title: Apparatus for controlling the flow of liquids
IPC: A61M1/16
Filed: 1971-07-22
Abstract: 1404134 Weighing GLEVUM INDUSTRIAL DESIGNERS Ltd 24 July 1972 [22 July 1971] 34332/71 Heading G1W [Also in Division A5] Apparatus for supplying liquid to a patient comprises a replaceable plastics container 10 to which liquid is fed from storage containers 16 by a pump 14, a switch being operated when a predetermined amount of liquid is contained in container 10 to switch off the pump and actuate a timing device 31x controlling a solenoid valve 20 located in an outflow pipe to the patient. When container 10 is empty a dwell period is initiated by timer 32x and at the end of this period a solenoid valve 22 in the discharge line from the patient to a discharge vessel 23 is opened. When container 23 contains a predetermined amount of liquid switches are operated to close valve 22 and open valve 28 leading to reservoirs 30 or a sluice. Container 10 is mounted on a rod 11 connected to a float 11 contained in a chamber 32 to which a U-tube 36 is connected. A pair of photo-electric cells are located on a graduated scale 39 adjacent the U-tube the lower cell indicating zero content of container 10 and the upper cell being adjustable to indicate the required amount of liquid in container 10. Vessel 23 is suspended from a similar device. A fail-safe device may be incorporated whereby an alarm is given if either container 10 or vessel 23 is overfilled, and pump 14 is de-energized or valve 22 closed.
Patent GB-906994-A (GB)
Title: Improvements in or relating to purification of propylene
IPC: C07C7/167
Filed: 1959-10-09
Abstract: Gases containing propylene are purified by mixing with hydrogen and passing over a catalyst containing palladium, platinum or rhodium or a mixture of two such metals, at above 120 DEG C. Propadiene and methyl acetylene are selectively hydrogenated. The catalyst may contain 0.001-1% of palladium and preferably also platinum or rhodium supported on alumina, silica, kieselguhr, carbon or diatomaceous earth.  The gas may be passed at 400-10,000 standard volumes per hour per volume of catalyst at 120-250 DEG C. and 0-500 p.s.i.g.  The gas may contain up to 2% by volume of impurities and hydrogen is added in amount of 1-50 times the stoichiometric quantity for hydrogenation of the impurities.
Patent GB-329954-A (GB)
Title: Improvements in the manufacture and production of stoving lacquers
IPC: C09D191/08
Filed: 1928-11-22
Abstract: 329,954. Johnson, J. Y., (I. G. Farbenindustrie Akt.-Ges.). Nov. 22, 1928. Lacquers.-Stoving lacquers are made by dispersing high molecular fractions of oxidation products of paraffin and like hydrocarbon waxes in organic solvents. Other organic film-forming materials, stable at stoving temperature, such as asphalts, linseed oil, mineral or brown coal tars, stearin pitch, blue oil, &c. may be added. The fractions used are the, residues from the distillation of the oxidation products or of their acid constituents insoluble in petroleum ether, or the residues from extracting these materials with petroleum ether, or the products obtained by pressing the oxidation products. The acid constituents are obtained by extracting with petroleum ether, or by pressing the crude oxidation products, or by saponifying, removing unattached paraffin wax, &c., decomposing the soap formed with mineral acid and extracting the free acids with petroleum ether or benzine. The fractions may be treated with a volatile polymerizing agent such as chlorine, sulphur, &c. prior to dispersing them. In an example, a residue obtained as described in Example 2 of the Provisional Specification of Specification 322,437, [Class 2 (iii), Dyes &c.], by distilling carboxylic acids, insoluble in petroleum ether and derived by pressing crude oxidation products of paraffin wax, is treated with chlorine at 200‹ C. A solution of the product in toluene may be applied and after heating to 170‹ C. leaves a black lacquer film on metal, glass, &c. Other examples are given. Specification 303,566 is referred to.
Patent GB-921504-A (GB)
Title: Dyebaths and printing pastes
Inventor: DEHNERT JOHANNES
IPC: D06P3/24
Filed: 1961-09-26
Abstract: Materials of polyamides and polyurethanes are dyed or printed using dyestuffs of the formula <FORM:0921504/IV(a)/1> in which A may be unsubstituted or substituted with halogen atoms, nitro, alkyl, alkoxy, acylamino, sulphonic acid amide, alkylsulphone groups or an arylazo group which may be substituted. The dyes may be obtained by azo coupling on to 1-(4-hydroxyphenyl)-pyrrolidone-(2).  Among the specified diazo component materials are aminobenzene, 1-amino-2,5-dimethoxy-4-acetylamino-benzene, 1-(4-aminophenyl)-pyrrolidone-(2), 1-amino-5-chloro-2,4-dimethoxybenzene, 1-amino-2-methyl-4-nitrobenzene, 1-aminobenzene-4-sulphonic acid amide, 1-aminobenzene-4-methylsulphone, 4-amino-3, 21-dimethylazobenzene.  The materials may be fibres, flock, threads, filaments, films, woven and knitted fabrics of polycaprolactam and polyhexamethylene diamine adipate.  The dyebaths may also contain auxiliaries such as sulphonated sperm oil alcohol and the reaction product of 1 mol. castor oil and 40 mols. ethylene oxide and are preferably made neutral to weakly acid by adding ammonium sulphate or formic acid.  Weakly alkaline dyebaths are also of use.  The printing paste may contain thickeners such as crystal gum, alginates and carob bean flour and assistants such as resorcinol and b -naphthol.  Dyeing may be effected at elevated temperatures or at the boil and prints may be subjected to a dry heat or steam after-treatment.  Examples are given.
Patent GB-808033-A (GB)
Title: Improvements in or relating to ploughs and the like for mining and similar purposes
IPC: E21C27/46
Filed: 1956-11-13
Abstract: 808,033. Mining machines. CROUCHER, A. N. Nov. 13, 1957 [Nov. 13, 1956], No. 34680/56. Class 68(1). A plough type mining machine having rotating eccentric weights to impart a reciprocating force to the plough cutting ends. A vibrator unit Fig. 1 (not shown) at the centre of the plough frame contains a central shaft 8 carrying a gear wheel 9 meshing with two pinions 10 one on each of the shafts to which eccentric weights 11 are attached. Each weight 11 drives a similar weight 14 through a pair of gears 12 or 13. The drive to the unit is obtained by running the haulage rope over a pulley connected to the shaft 8 by an epicyclic step up gear unit. The direction of the reciprocating force due to the eccentric weights can be altered by rotating the whole vibrator unit within the framework of the plough. In a modlification the vibrator unit is driven by an air or electric motor.
Patent GB-957069-A (GB)
Title: Improvements in sealed salient field poles
IPC: H02K3/18
Filed: 1961-09-27
Abstract: 957,069. Insulation for dynamo-electric machines. GENERAL ELECTRIC CO. Sept. 27, 1961 [Oct. 11, 1960], No. 34683/61. Heading H2A. A field pole 10 comprises a plurality of laminations 12 assembled together to form a field pole body, insulation on the pole body and a winding 18 wound thereover, the insulation comprising a continuous sheet 24 formed of fibrous asbestos and woven glass cloth impregnated with a thermosetting resinous composition and firmly bonded to the field pole body after heat curing. The pole body surfaces are initially coated with an epoxy or other thermosetting resinous material 36 after which an insulating layer 34 comprising a pair of sheets of fibrous asbestos and woven glass cloth impregnated with an epoxy or polyester thermosetting resin and bonded together to form a single sheet, is wrapped around the pole body. Hoods 26, 30 are formed from the asbestos glass and positioned at the pole tips 28 and the spider end of the rotor respectively. In addition, to strengthen the insulation a washer or collar 32 of glass mat reinforced polyester is provided at the pole tip. In order to prevent cutting through of the insulation at the corners by the coil during winding a glass laminate 38 is used to reinforce the insulation 24. The first turn of wire near the collar 32 may be wrapped with an insulating medium to increase the dieleotic strength and an epoxy resin is poured over the coil as it is being wound. Upon completion of the winding operation the field pole is subjected to heat to cure the resin and bond the insulation to the pole body. The field pole may then be capped with an additional layer of insulation to provide a glassy surface.
Patent GB-1466772-A (GB)
Title: Castings of articles containing calcined gypsum
IPC: C04B38/10
Filed: 1974-08-07
Abstract: 1466772 Casting and curing heated cementitious mix J N LOWE and B C GREBE 23 May 1975 [7 Aug 1974] 34831/74 Heading B5A [Also in Division C1] An article such as a building panel is cast from a mixture including calcined gypsum, cement and water with at least one of these components being heated before mixing so that the mixture has an initial temperature of from (70-130) F., the article is removed from the mould, belt or other supporting device when its component mixture has set sufficiently to be self-supporting, and loss of heat and moisture from the article is then prevented or restricted for at least two hours. During this time, the temperature of the article rises to within the range (90-180) F., and the article is kept in an atmosphere of 100% relative humidity. As described, some of the required water is passed through a heater 4 (Fig. 2(a)) into a mixer 1, and the dry components added, followed by the remaining heated water and all additives. The mixture is cast by a flexible pipe 6 into a horizontal preheated, PVC or plasticscoated timber mould 8, screeded, the supporting table 7 vibrated, and a heat insulating cover added. The calcined gypsum content sets and the temperature of the article starts to rise, whereafter the mould 8 is tilted to a vertical position and the self-supporting article is removed and held vertically on the floor by a crane engaging an eye 22 of embedded reinforcements 21. The mould 8 is returned to the horizontal for casting of a further article, while one face of the removed article is sprayed with liquid polyurethane. The crane then suspends the article in a heat and moisture insulated chamber 10 (Fig. 2(c)) having walls comprising polyethylene coated foamed polystyrene members 11, 15, which prevent moisture escape so that relative humidity in the chamber rises to 100%, while heat loss is minimised. When the cement content of the article has cured, a fan blows air over the article (with the chamber lid 15 removed) and suction is applied for drying. The chamber is then filled with CO 2 , and finally the unsprayed panel surface is coated with an acrylic resin emulsion. Materials.-(90-10)% of calcined gypsum, (10-90)% of Portland cement (sulphateresisting or rapid hardening), Pozzolana cement, sisal fibres, prestressing cables, foaming agent, a fluidizer (e.g. Gum Arabic), sodium citrate, potassium sulphate, acrylic resin emulsion, water, aggregate. The mould 8 can be contoured to simulate brickwork, and pigments or aggregate applied to its surface. Randomly mixed two-colour mixtures can be used.
Patent GB-995631-A (GB)
Title: A device in furnaces delivering hot gases for cooling the gases and utilizing their heat content
Inventor: HELLEBERG TORE
IPC: C21C5/40
Filed: 1961-09-28
Abstract: 995,631. Utilizing heat from converter chimneys; heating systems for buildings. TRAFIKAKTIEBOLAGET GRANGESBERG-OXELASUND. Sept. 28, 1961, No. 34841/61. Headings F4B, F4J and F4U. Heat is extracted from the gases emitted by a metallurgical converter by means of a chimney through which the gases flow and which forms part of a heating system comprising two circuits for liquid having a common portion acting as a liquid and heat reservoir. The first, heat - absorbing circuit includes water-cooled sections of the chimney from the converter, while the other, heat delivering circuit includes a heat-exchanger in which some at least of the heat extracted is applied usefully. As shown, blow gases from a steel-making converter 1 operating with oxygen blast enter the chimney 2 which comprises two sections 3, 4, each of double-walled construction to provide channels for the water coolant. With natural circulation of the water from the base of the container 6, the two sections form parallel-connected branch circuits, but with forced circulation (Fig. 2, not shown), the sections are connected in series. The water returns heated to the top of the container, the flow being controlled by control means 16, 24 which are linked to temperature-sensitive control means 38, 39 so that the water returns at a constant and as high a temperature as possible. Hot water is drawn from the top of the container 6 and circulated by a pump 29 through the heat exchangers 32 and 49, the former being connected to a room-heating system while in the latter a controlled flow of coolant regulates the temperature of the water returning to the base of the container to a uniformly low value. The volume of the container is chosen to accommodate intermittent absorption of heat in the heat-absorbing circuit. In a modification (Fig. 2, not shown), a constant circulation of water through the channels of the chimney is maintained by a pump, the make-up of cold water and bleed-off of hot water from and to the container being controlled in accordance with the temperature by a three-way valve.
Patent GB-1056328-A (GB)
Title: Scale instruments
IPC: G01B3/02
Filed: 1964-08-26
Abstract: 1,056,328. Measuring scales. H.E. CHARLTON. Sept. 21, 1965 [Aug. 26, 1964], No. 34864/64. Heading G1M. A scale instrument comprises an elongated member of highly extensible material e. g. rubber upon which at least one scale is marked, whereby the member may be extended so that the scale has an overall length which is infinitely variable between given limits. The member may comprise a rubber strip or bar and the scales may be linear or logarithmic. A device for holding and expanding the member is illustrated in Fig. 3 (not shown) and comprises telescopic co-operating tubes each the natural length of the member having blocks at their mutually remote ends. The blocks each incorporate a shouldered pin, the pins engaging holes in the ends of the member.
Patent GB-506490-A (GB)
Title: Improvements in driving chains
IPC: F16G13/07
Filed: 1938-11-30
Abstract: 506,490. Driving chains. DIETRICH, E. Nov. 30, 1938, No. 34890. [Class 24] The links comprise elements 1 all the same and pressed in one piece with bosses 2 at each end and at the opposite sides of the element. In assembly, the links are connected by pins 3 with the bosses on adjoining link elements directed away from the contacting surfaces of the elements and embracing the pin, and a roller 4 is mounted on the pin between the inwardly directed bosses.
Patent GB-901874-A (GB)
Title: Improvements relating to aircraft
Inventor: WILDE GEOFFREY LIGHT
IPC: B64C29/00
Filed: 1959-01-08
Abstract: 901,874. Vertical take-off aircraft. ROLLSROYCE Ltd. Jan. 7, 1960 [Jan. 8, 1959], No. 34995/61. Divided out of 901,873. Class 4. The subject-matter of this Specification also forms the subject-matter of Specification 901,873, but the claims differ.
Patent GB-938501-A (GB)
Title: Powder dispensing apparatus
IPC: G03G15/08
Filed: 1959-10-15
Abstract: 938,501. Electrophotographic development. RANK-XEROX Ltd. Oct. 15, 1959 [Nov. 28, 1958], No. 35003/59. Class 98 (2). [Also in Group XXX] Toner powder for a xerographic copying apparatus is dispensed from hopper 100 by means of a reciprocating grid 45. The hopper has a base plate 40 which is separated from the sides 37, 38 to form two elongate discharge slots 101, 102; and the wire grid 45 is carried by rectangular frame 41-45, so that the grid passes through the slots and moves over the base plate to discharge the powder from the hopper via the slots. The reciprocating movement of the frame is effected in one direction by a driving crank and in the other direction by spring 63 ; the movement being guided by fixed rods 48, 49 which are engaged by blocks 51 carried by the frame. The movement may be varied to vary the rate of discharge. The hopper is carried by arms 52, 53 supported at 54. The grid may be formed of a metal stamping.
Patent GB-864554-A (GB)
Title: Improvements in or relating to devices for securing cutting bits in tools
Inventor: COMIRE DONALD EVERETT
IPC: B23C5/22
Filed: 1959-10-16
Abstract: 864,554. Machine-tool details; milling- cutters. O.K. TOOL CO. Inc. Oct. 16, 1959, No. 35099/59. Class 83 (3). A device for securing a cutting-bit 6, e.g. in a milling-cutter, comprises a. holder 1 with a cylindrical recess 2, one side of which breaks through one side of the holder, two semicylindrical parts 4, 5, concentric with the recess for securing the bit therebetween, and a wedge 10, Fig. 3, for clamping the parts and bit without substantially deforming the wall of the recess. A part-cylindrical shell 3 surrounds the parts 4, 5, which, with the shell and bit, are held together as a unit by a hollow spring-pin 8. A tapered flat 11 on the outside of the shell engages the wedge 10, which is screwed into the holder.
Patent GB-1428838-A (GB)
Title: Polytetrafluoroethylene granular powder and process for  preparing the same
IPC: C08L27/00
Filed: 1973-07-24
Abstract: 1428838 PTFE particles DAIKIN KOGYO CO Ltd 24 July 1973 [29 July 1972] 35209/73 Heading C3P Granular PTFE particles consisting of agglomerates of primary particles of size below 200 microns have more than 90% of granular particles less than 1000 microns, an average particle size in the range 100-500 microns with more than 60% of the granular material having particle sizes of 0À7-1À3 times the average and with a flowability (defined) more than 3 while on moulding giving an article having a surface roughness less than 2À0 are obtained by agglomerating PTFE powder particles having an average particle size below 200 microns by agitating in 150-5000% by wt. of the PTFE of an aqueous medium consisting of more than 130% of water and 20-300% of an organic liquid incompatible with water and having a surface tension less than 35 dynes/cm, at 25‹ C. and subsequently, simultaneously or alternately crushing to reduce overlarge agglomerates. The organic liquid may be a hydrocarbon, halogenated hydrocarbon or ether; in the examples are used carbon tetrachloride, agglomeration being effected with stirring.
Patent GB-842130-A (GB)
Title: Improvements in or relating to bistable transistor trigger circuits
IPC: H03K3/012
Filed: 1957-11-12
Abstract: 842,130. Transistor bistable circuits. WESTERN ELECTRIC CO. Inc. Nov. 12, 1957 [Nov. 16, 1956], No. 35274/57. Class 40(6). A bistable trigger circuit comprises a first transistor having a positive feedback impedance in its base circuit so as to cause the transistor to have negative impedance characteristics and operate as a bistable stage and a second transistor having its base connected directly to the emitter of the first transistor and acting as a buffer amplifier, the two transistors having a common bias circuit. In this circuit the high speed of operation of a point contact transistor may be combined with the high output qualities of a junction transistor and leakage of the input pulses to the output may be avoided. In the "off" condition of Fig. 1 both the point contact transistor 12 and the junction transistor, 11 are maintained non-conductive by a bias supplied through resistor 14. On the application of a positive pulse through capacitor 19 the point contact transistor 12 begins to conduct and due to regeneration produced by the base resistor 16 rapidly reaches the fully conductive state. This causes the emitter potential to fall and the junction transistor to become conductive, producing a heavy current in the output load 24. When a reset pulse is applied through capacitor 27, the point contact transistor is rapidly cut off and this causes the junction transistor 11 also to be cut off.
Patent GB-508063-A (GB)
Title: A device for instruction and examination in rule of the road at sea and navigation by sea marks
IPC: B63B49/00
Filed: 1937-12-21
Abstract: 508,063. Navigation - teaching and optical apparatus. SOMMERVILLE, W. E. Dec. 21, 1937, No. 35312. [Class 114] [Also in Group XX] Navigation instruction apparatus comprises a projector adjustably mounted'on a stand and a curved screen concentric thereto and between them is a stand carrying a dummy compass card which a student operates following upon movements of the projector by the instructor. A projector 13 mounted on a base 12 has a bossing 11 fitting upon an upright peg 6 which is mounted for rotation on the upper part 2 of a stand 1. The spindle 6 is connected by two double reduction gears with an operating handle 20 whereby the projector can be moved slowly. For rapid movement, the bossing 11 is moved by hand on the spindle 6 with which it is normally in frictional engagement. The stand 1 has a number of platforms 3, 4, 5, and upon the platform 3 is disposed a circular tray 22 rotatable on a spindle 23 and having compartments in which slides representing navigation lights, sea marks and other navigation details are placed. The compartment over the tray is illuminated by light 47 and a compass 40 mounted on the top platform 2, illuminated by a screened light 45. A dimming resistance 48, 49 is provided for the projector. A compass card 29 is provided for the examinee and is free to revolve on the centre pin 30 in relation to a fixed indicator ring 32. A frame 33 carries a lubber line 34 to be positioned over the ring 32 and a wind indicator 35 and sight vane 36 are provided. The card and ring are transparent and illuminated by a light beneath them. The curved screen 50 is preferably made in segments carried by uprights 51, which have pins 54 engaging holes in brackets 55 upon the screen segments. In the twin side carrier, a combined key and shutter 57 is carried by the vertical frame bar of the carrier. The shutter works on a pin 58 fixed in the bar 59 and is normally held by a rubber spring 60. For releasing the shutter, a second spring 62 is provided, and when pulled downward slowly, may be used to unmask openings 71 in the slides to represent revolving or flare lights. The shutter may be drawn clear of the slide aperture by pressing down on the knob 61 and bringing the other end of the slot in the shutter up against the fixed pin 58. In order to increase the length of the arc swept, a second projector may be used, which is linked up so that a common indicator apparatus is used for both. In this case, the screen is in. the form of two arcs each concentric with its respective projector.