baber/WOPTO huggingface dataset:
Patent GB-988778-A (GB)
Title: Pulse generator
Inventor: MARTIN JOHN CHRISTOPHER
IPC: H03K3/53
Filed: 1962-01-12
Abstract: 988,778. Pulse delay lines. UNITED KINGDOM ATOMIC ENERGY AUTHORITY. Jan. 4, 1963 [Jan. 12, 1962], No. 1313/62. Heading H1W. [Also in Division H3] A pulse generator (see Division H3) comprises strip transmission lines 1, 2 comprising a pair of copper foils 4, 5 separated by sheets of polyethylene from a further foil 6 doubled back over a sheet of polymethylmethacrylate. The strip lines 1, 2 have a characteristic impedance of 0À1 ohm. In Fig. 4 the two strip lines are formed about a block 42 of polymethylmethacrylate and comprise a copper foil 43, separated by sheets of polyethylene from further foils 8, 40 which are in turn separated by further sheets of polyethylene from outer foils 47, 48. Bridge connections 21 connect the lines to a spark gap of the type described in Specification 988,777. Figs. 2, 3 (not shown) relate to pulse generators comprising a multiplicity of such lines.
Patent GB-895563-A (GB)
Title: An ion exchange process
IPC: B01J47/10
Filed: 1959-01-14
Abstract: A pulp containing ions which are to be extracted is continuously introduced into the top of a mixing vessel with ion-exchanges of lower specific gravity.  The mixture overflows into a separator, where under quiescent conditions the exchanger floats to the top and may be used in further mixing vessels.  The flow of ion exchanger from the separator can be assisted by a pump, injection of gases or by a head of liquid in the mixing vessel.
Patent GB-203265-A (GB)
Title: The manufacture of vaccines
IPC: A61K39/02
Filed: 1923-01-16
Abstract: 203,265. Carpmael, W., (Compagnie Nationale de MatiÞres Colorantes et de Produits Chimiques). Jan. 16, 1923. Vaccines are prepared by suspending sterilized microbes in an excipient obtained by the bacteriolysis of the same variety of microbe. Preferably the bacteria to be suspended are divided into three portions which are killed respectively by heating, by freezing, and by chemical action. In an example gonococei obtained from cultures of different races are divided into four portions from one of which the excipient is prepared by treatment with soda lye, neutralizing with hydrochloric acid, and rendering isotonic by adding distilled water. The remaining portions are killed by heating to 58‹., by freezing, and by treatment with formol respectively, and are suspended in the excipient obtained from the first portion. The vaccine may be rendered polygenetic by the addition of a. vaccine prepared in a similar manner from synococci.
Patent GB-650682-A (GB)
Title: Coated or impregnated fabrics of glass fibres
IPC: C03C25/26
Filed: 1947-01-16
Abstract: Aqueous dispersions of polyvinyl resins are applied to glass fabrics to give them dyeing properties.  In an example, vinyl acetate and vinyl chloride are polymerized in water containing turkey red oil and potassium persulphate in a lead-lined autoclave at 60-65 DEG  C. while stirring, until the pressure has fallen from 10 atmospheres to 2.  The emulsion obtained is filtered and mixed, while stirring, with an aqueous paste of methyl cellulose, and also with a mixture of dibutyl phthalate and tricresyl phosphate in the ratio of 2 : 1.ALSO:Fabrics composed of glass fibres are treated with such an amount of an aqueous dispersion of a polyvinyl compound that the fabric remains pervious to air while acquiring a capacity for taking up dyestuffs and a resistance to slip and to splintering of the fine glass fibres.  The fabrics may be knitted or woven.  The polyvinyl compound may be polyvinyl acetate or chloride, polyacrylic esters, or a vinyl chloride-acetate copolymer.  The dispersion, which may be made by polymerizing an emulsion of the monomer, and may contain a plasticizer, may be applied on the foulard, by a doctor blade, or by printing with a finely-engraved roller.  The treated fabric may be heated to effect gelation of the polyvinyl compound and may be dusted with talc to avoid tackiness.  In an example a glass fabric is dyed blue by first impregnating it on the foulard with a dispersion of polyvinyl acetate, drying, and dyeing in a bath containing finely dispersed 1 : 4 : 5 : 8 - tetramino - anthraquinone and sodium N-benzyl-m -heptadecylbenzimidazole disulphonate.
Patent GB-538064-A (GB)
Title: Improvements in periodic wave generators particularly for television
IPC: H03K4/43
Filed: 1940-01-25
Abstract: 538,064. Valve generating circuits. HAZELTINE CORPORATION. Jan. 25, 1940, No. 1557. Convention date, Feb. 16, 1939. [Class 40 (v)] A circuit for generating saw-tooth currents in an inductive load circuit having incidental capacity and resistance comprises a feed-back circuit having an auxiliary impedance network 19, having elements which are the inverse of the corresponding elements of the load circuit, the network being responsive (through condenser 17 and valve 16) to the conditions in the load circuit and in turn controlling the latter through condenser 20 and valve 11. The amplitude of the currents generated may be adjusted by varying resistance 13 in a circuit 13, 14 of large time constant. The frequency of the currents may be controlled by varying a resistance 18a in a circuit 18a, 18b across which is connected the control circuit of valve 16. A small adjustable resistance 15 provides a negative feed back to the grid of valve 11 to compensate for non-linearity due to decrease in the rate of rise of current in the inductance 10 during the latter part of the tracing period. Specifications 401,990 and 522,637 are referred to.
Patent GB-699753-A (GB)
Title: Improvements in and relating to caravans and transportable buildings
IPC: E04B1/344
Filed: 1951-01-22
Abstract: 699,753. Portable buildings. POULTON. F. C. Jan. 14, 1952 [Jan. 22, 1951], No. 1638/51. Class 20(i) [Also in Group XXXII] A portable building is extended by first raising the roof A hinged at its inner side to the main roof B, then moving outwardly the side C which is carried by end wall portions D, E pivoted together at V<SP>1</SP>. The floor is then folded downwardly about its inner edge to rest on abutments on the side and end walls to maintain these parts in their extended positions.
Patent GB-606315-A (GB)
Title: Mechanical beating process for fabrics and other textile products and apparatus for carrying out the said process
IPC: D06G1/00
Filed: 1946-01-17
Abstract: 606,315. Finishing fabrics. BLIN & BLIN SOC. ANON. Jan. 17, 1946, No. 1701. Convention date, Nov. 7,1945. [Class 42(i)] In a mechanical beating machine for imparting a desired appearance or texture to a fabric, the fabric is led over driven rollers a, b covered with card clothing, plush, felt or other material capable of driving or retaining the fabric by mere contact, and is acted upon by a rotary beating member c, having a number of longitudinal projections d. The latter may be integral with the cylinder c, or may be secured thereto. and they may be parallel with the axis g, or be helical or of other shape. The speeds of the roller and of the beater may be adjustable relatively to each other, and those of the rollers may be different
Patent GB-794768-A (GB)
Title: Jet propelling unit
IPC: B64C15/02
Filed: 1956-01-19
Abstract: 794,768. Jet propulsion plant. CAILLETTE, G. Jan. 19, 1956 [Jan. 25, 1955], No. 1811/56. Class 110 (3). [Also in Group XXXIII] A jet-propulsion plant comprises two jetpropulsion engines 2, 3 arranged coaxially with their air inlets facing each other. The rear engine 2 has a single propulsion nozzle 8, the direction of which may be adjusted for control purposes and the front engine 3 is provided with a bifurcated jet pipe 9, each branch of which terminates in a rearwardly directed nozzle 11. These also may be adjusted for control purposes and the flow of gas to the respective nozzles may be controlled by valve mechanism 16. When installed in an aircraft, air. intakes located on each side of the aircraft each connect with a duct 5, each divided into branches 6, 7 taken respectively to the engines 2 and 3. The airflow to respective engines may be controlled by valve mechanism 15 at the junction of each set of ducts 5, 6 and 7. Specification 740,796, [Group XX], and French Specification 947,552 are referred to.
Patent GB-877921-A (GB)
Title: Improvements relating to transistor amplifiers
IPC: H03F1/30
Filed: 1958-01-20
Abstract: 877,921. Transistor amplifying circuits. TELEFUNKEN G.m.b.H. Jan. 20, 1958 [Jan. 19, 1957], No. 1814/58. Class 40(6) In an amplifying stage in which the input electrode of a transistor is biased from a voltage divider R1,R2 connected across the power supply, positive feedback is used to reduce the loading thrown on the previous stage by the voltage divider. In one embodiment, transistor T1, Fig. 1, feeds a loudspeaker 3 via a tapped choke 4 and positive feedback is obtained by returning resistor R2 to one end of the choke and the collector to the other, the tap being connected to the supply. In another embodiment positive feedback is obtained by returning resistor R1, Fig. 3, to a tap on the secondary of an output transformer 5 feeding loudspeaker 3. In this embodiment negative feedback is applied across transistor T1 at high frequencies by means of condenser C2, and in addition, there is overall negative feedback including a preceding transistor stage T2, by means of resistor R4 and blocking condenser C3. The first stage may alternatively comprise a thermionic valve (Fig. 4, not shown).
Patent GB-468243-A (GB)
Title: Improvements in or relating to linear dimension gauges
Filed: 1936-01-20
Abstract: 468,243. Linear - dimension gauges; indicating-apparatus. CAPP, A. Jan. 20, 1936, No. 1866. [Classes 106 (ii) and 106 (iv)] In a gauge of the dial indicator type for measuring the variations in height or depth of parts of a surface from standard, the deflections of a feeler 4 are transmitted by a lever 1, pivoted at 12, through the intermediary of a helix of wire 5 attached to the lever, which bears on a projection 9 on a spindle 6, the pointer on which indicates the magnitude of the deflection on a dial 8. A clip 15 allows of easy replacement or adjustment of feeling members which are friction held to the lever 1. The spring 10 is adapted to press the lever either upwards or downwards according to whether an upper or lower surface is to be tested.
Patent GB-639833-A (GB)
Title: Improvements in or relating to motor ploughs
IPC: A01B15/20
Filed: 1947-01-21
Abstract: 639,833. Agricultural implements. TRAUTTEUR, A. Jan. 21, 1947, No. 1892. Convention date, Feb. 3, 1946. [A Specification was laid open to inspection under Sect. 91 of the Acts, Jan. 21, 1947.] [Class 6 (i)] [Also in Group XXXI] A small, manually-guided, endless track tractor 1 is provided with a plough 6 which is pivoted to the front of the tractor and pushed by it, the plough being wider than the tractor. The tractor is mounted on a pair of endless tracks entrained around motordriven rear sprockets 3p and forward idle sprockets 3a, the drive being transmitted to either or both tracks at will by the manipulation of a lever 71 carried on the rearwardly-extending handlebars 9 (see also Group XXXI) which'also carry throttle and clutch controls. The ploughshare can be tilted about a pivot 78 on the tractor chassis by a bell-crank lever 79 operable, through a link 80, by a lever 81 on the handlebars. A pulley 75, Fig. 4 (not shown), is provided for driving any other machinery which may be associated with the tractor. Track eliminators (not shown) may be mounted at the rear of the tractor.
Patent GB-108456-A (GB)
Title: Improvements in Railway Signalling and Train Control Systems and the like.
Inventor: BERNARD STARIE
IPC: B61L3/22
Filed: 1917-02-07
Abstract: 108,456. Starie, B. July 29, 1916, [Convention date]. Signalling s y s t e m s , automatic; wireless systems; track apparatus actuating signals on trains and for stopping trains.- When dividing the track into block sections, the use of insulated rail joints is avoided by using a track rail as a common continuous conductor for a series of resonant circuits, Fig. 1, energized by highfrequency currents. Each resonant circuit is supplied at each end 3, 4 with high-frequency current, the circuit being completed by a device or relay 8, responsive to high-frequency current and capable of controlling a local circuit, a condenser, and capacity 11, 12 to give resonance for some convenient frequency, e.g. 6000. The relay may be employed to control visual signals, as shown in Fig. 8. Under normal conditions, high-frequency current flows through the relay 82 rendering it conductive to battery current and so completing the circuit for the relay 84, which, by the closing of the contact, completes the circuit through the solenoid 85 holding the signal in the " clear " position. When a train N enters the section, the relay 8 acts to cut off the current from the relay 82, thereby opening the relay 84 and operating the solenoid 85 to allow the signal to drop to ''danger'' position. The relay 8 may be employed also to control signals at level crossings or in connexion with locking switch points. It may be employed also to control high-frequency oscillating-ourrent circuits, Fig. 3, used to radiate waves to bridge the gap between the track rail aud a receiving circuit carried by a train to give train-control or a cab-signal. Each operative circuit, Fig. 3, includes a part 16 of the uninsulated track rail. a parallel conductor 19 and end conductors 20, 21. and is adjusted to resonance with the periodicity of the source 22 of high-frequency oscillating curent. Succeeding operative circuits along the track are connected to alternate sides of the track and overlap one another, as shown in Fig. 6, and each train carries a receiving circuit N<1>, N<2> near each side of the track, each receiving circuit being operated only by the operative circuits on its side of the track. The overlapping of succeeding operative circuits permits the receiving circuits on a train to be arranged so that, after a danger signal has been given on a train, both receiving circuits must be energized at the overlapping parts of the operative circuits before a clear signal can be given, though one receiving circuit will maintain. a clear signal after it has been given. A caution signal may be given by changing sufficiently the periodicity of the operative circuits. In modifications, the relay 8 may be employed to control visual signals which operate train-control and cab-signal apparatus; or it may be employed in such a manner that all the operative circuits are normally de-energized and are put into operation only immediately in front of a train.
Patent GB-224420-A (GB)
Title: An improved process for coating metal moulds
IPC: B22C23/02
Filed: 1924-01-25
Abstract: 224,420. Holley, E. Jan. 25, 1924. Mould materials. - A metal mould is lined bv alternately heating and painting or spraying with a liquid. The mould, which may be hollow and of cast iron, is heated to 300-500‹ F. and coated with a 10 per cent solution of sodium silicate mixed with an equal weight of fine fireclay as described in Specification 202,273. The mould is reheated by means of a blowpipe applied to the coated surface. Specification 227,425 also is referred to.
Patent GB-893205-A (GB)
Title: Vacuum cleaner attachment
Inventor: BRIDGE SAMUEL DOUGLAS
IPC: A47L5/28
Filed: 1960-01-20
Abstract: 893,205. Suction cleaner filter bags. ROLLNICK & GORDON Ltd. Dec. 2, 1960 [Jan. 20, 1960], No. 2124/60. Classes 8(1) and 8(2). The dust-laden air outlet 2 of a handlepropelled suction cleaner of the outside bag type is connected to one end of an upwardly extending impermeable flexible tube 1 which passes through a U-shaped bracket 3 secured to the cleaner handle 6 and has a downturned end to which is detachably secured a porous paper filter bag 9. The tube 1 and bag 9 is contained in an air permeable appearance container 10.
Patent GB-1056562-A (GB)
Title: Improvements relating to methods for forming conductive pads on a circuit board by coating with metals
IPC: H01L49/02
Filed: 1964-01-17
Abstract: Conductive pads are formed on micro-circuit wafers 10 of e.g. a ceramic (alumina or beryllia), glass or a polymeric material, by mounting the wafers between masks 12, 14, mounting the assembly in a rotating wheel and depositing metal by either sputtering or vapour deposition from <PICT:1056562/C6-C7/1> <PICT:1056562/C6-C7/2> <PICT:1056562/C6-C7/3> sources 16, 18.  A first layer may be Cr, Ti, Zr, Mn, Ta or Co and a second layer Au, Cu, Ni, Ag, Ta or Al.  As the wheel rotates, a stationary chain 34 causes the assembly of wafers 10 to be rotated about their own axes.  Masks are then arranged to expose all but the sides, and a layer of Al deposited at 42, Fig. 4, which is then oxidized electrolytically using e.g. 10% H2SO4 solution as electrolyte.  Electric contact is made with the Al layer, e.g. by breaking through the oxide layer, and copper or nickel is electrolytically deposited on the terminations previously deposited. The aluminium and its oxide coating are removed by e.g. immersion in an alkaline solution.  The terminations so formed are tapered.
Patent GB-950949-A (GB)
Title: Process for the selective oxidation of polyhydroxy-steroids
IPC: C07J71/00
Filed: 1961-01-19
Abstract: Oxidizable carbinol groups having a double bond in the a , b -position thereto are selectively oxidized in steroids containing these and other oxidizable carbinol groups by treating the steroid with a carbonyl compound in an aromatic hydrocarbon solvent and in the presence of an aluminium or magnesium alcoholate until the absorbtion in ultraviolet light reaches a maximum between 230 and 260mm . Suitable solvents are those normally used in Oppenauer oxidations, and the alcoholates are preferably the tertiary butylates or isopropylates, although halogenated alcoholates and phenolates may also be used. The carbonyl compound employed may be an aliphatic, alicyclic or araliphatic ketone or a quinone. In examples (1) D 4 -3, 20- dihydroxy-11a -acetoxy-pregnene (prepared by reduction of 11a -acetoxy-progesterone) is oxidized to D 4 -3- keto -11a - acetoxy -20b - hydroxy-pregnene and this is converted to the corresponding D 5 -3- ethylene-ketal; (2) D 4 -3, 11a , 20-trihydroxy-pregnene (prepared by reduction of 11a -hydroxy-progesterone) is oxidized to D 4 -3-oxo -11a , 20-dihydroxy-pregnene, from which the 20b -epimer is isolated and converted to its D 5 -3- ethylene-ketal; (3) and (4) D 4 -3, 17b -dihydroxy-androstene is oxidized to testosterone; (5) D 4, 9 (11) -3, 20- dihydroxy-pregnadiene is oxidized to the 3-ketone which is converted to the D 5 -3- ethylene-ketal; (6) D 4-3, 20-dihydroxy-11a -tosyloxy-pregnene (prepared by reduction of D 4 -3, 20- dioxo -11a - tosyloxy-pregnene) is oxidized to D 4 -3- oxo -11a -tosyloxy -20- hydroxy-pregnene, which on ketalization gives D 5 -3- ethylenedioxy -11a -tosyloxy -20-hydroxy-pregnene and the ketal of (5); (7) D 4 -3, 20- dihydroxy-9, 11b -oxido-pregnene (prepared by reduction of 9, 11b -oxido-progesterone) is oxidized to D 4 -3- oxo-9, 11b -oxido -20-hydroxy-pregnene, which is then converted to the D 5 -3- ethylene-ketal; and (8) D 4-3, 20- dihydroxy-pregnene (prepared by reducing progesterone) is oxidized to D 4-3-oxo-20-hydroxy-pregnene which is converted to D 5 -3- ethylenedioxy -20b - hydroxy-pregnene and a little of the 20a -epimer. Reference is also made to the use of D 5 -7- hydroxy-and D 16 -20-hydroxy-steroids, obtained by reduction of the corresponding ketones, in the process of the invention. Specification 950,948 is referred to.
Patent GB-347219-A (GB)
Title: Improvements in and relating to splinterless glass
IPC: B32B17/08
Filed: 1930-01-22
Abstract: 347,219. Compound transparent sheets. BRITISH CELANESE, Ltd., 22, Hanover Square, London. Jan. 22, 1930, No. 2269. Convention date, Jan. 22, 1929. [Class 140.] The layers of glass and cellulose derivative or other strengthening material to be united into a compound transparent sheet are heated to a suit. able temperature between 50 and 200 C. depending on the nature of the cellulose derivative or other materials used and then pressed while hot to unite them. The cellulose derivative used may be purified as described in Specification 347,648 or bleached with nitric acid, hydrogen peroxide, &c., or may be extracted with ether. Any suitable solvents, plasticizers, or resins, &c. may be used in making the strengthening material. Dyes such as Ponsol Blue may be used to correct the natural yellowness. Any suitable adhesive such as the resins prepared according to Specifications 296,675, 299,065, [both in Class 2 (iii), Dyes &c.], or 347,646 may be used. Specification 317,476, [Class 20 (iii), Doors &c.], also is referred to.
Patent GB-809659-A (GB)
Title: Pad for use with flat bottomed rails
IPC: E01B9/68
Filed: 1956-01-24
Abstract: 809,659. Rail chair pads. CLYDE RUBBER WORKS CO. Ltd., and HANNAH, D. M. Jan. 24, 1956, No. 2277/56. Class 104 (2). A flat bottom, rail pad 1 is made of an elastically deformable material and has lugs 2, 3 which are apertured at 4 and which project laterally from two opposed sides of the pad 1 to form a cruciform figure in plan view. The pad may be made of an electricallyinsulating material such as vulcanized rubber. Specifications 678,731 and 724,388 are referred to.
Patent GB-177630-A (GB)
Title: Improvements in golf tees
IPC: A63B57/00
Filed: 1921-01-18
Abstract: 177,630. Maher, D. Jan. 18, 1921. Grant of Patent refused. Tees.-A golf tee of the kind that is pressed out of cardboard, paper, &c. and has the form of the frustum of a hollow cone, has walls of a uniform thickness throughout, and is made without an annular flange at the base. The tee may have a concave top B, or the top may have a central opening, or may be dispensed with. The sides of the tee may be perforated or corrugated. Specification 4752/05 is referred to.
Patent GB-786471-A (GB)
Title: Carton feeding and squaring-up device
IPC: B31B5/76
Filed: 1956-01-24
Abstract: 786,471. Setting up cartons. HEDLEY & CO., Ltd., T. Jan. 24, 1956 [Jan. 25, 1955], No. 2378/56. Class 94(1). A device for setting up collapsed cartons comprises a rotating helix, one end of which enters an open end of the carton to remove it from a stack and convey it along a path in contact with the helix, the helix having an increasing width which progressively squares the carton. In one embodiment, the ends 15 of two helices 13, 14 enter opposite ends of tubular cartons 5 on a stack conveying them towards the pockets of a chain conveyer 16 while in contact with locating rails 7. In another embodiment, Fig. 6 (not shown), a single helix is used for setting up, the helix comprising two wire spirals in lieu of a widening ribbon, the spirals progressively separating towards the discharge end. The rear wall of the cartons is engaged by a further helix consisting of a single wire spiral and positioned, as before, at the other end of the carton, this helix together with an auxiliary helix coaxial with the setting-up helix, assisting in conveying the cartons through the device. In a further embodiment (not shown), two opposed helices are of progressively reduced diameter towards the discharge end whereby they enter more deeply into the cartons as they travel towards the smaller ends.