baber/WOPTO huggingface dataset:
Patent GB-963411-A (GB)
Title: A fluid flow control valve actuated by pressure waves
IPC: A62B13/00
Filed: 1962-07-06
Abstract: 963,411. Ventilators. SULZER FRERES S.A. July 6, 1962 [July 7, 1961], No. 26084/62. Heading F4V. [Also in Division F2] A valve for protecting a ventilation shaft 4 of an air-raid shelter in the event of an explosion comprises a valve plate 9, preferably of sheet metal covered with a plastics material, which is suspended by springs 10 so as to be free from friction. Valve seats 12, 13 in the form of gratings are provided against which the valve plate seats in response to a pressure wave and subsequent suction produced by an explosion. In a modification, two valves are provided, one at each end of the shaft 4, and the valve plates co-operate with one seat only, one valve being closed by the pressure wave and the other by the subsequent suction.
Patent GB-1000619-A (GB)
Title: Improvements in electric hand torches and writing instruments
IPC: B43K29/10
Filed: 1963-07-02
Abstract: 1,000,619. Retractable writing instruments. KAN CHEUNG LO. May 28, 1964 [July 2, 1963], No. 26175/63. Heading B6P. [Also in Divisions F4 and H1] A pencil torch-writing instrument combination is provided with a bulb 8 having a centre hole therein to accommodate with axial movement the ink feed tube 15 of a writing unit 5, such as a ball-point pen. The writing unit 5 may be projected and retracted into and from the writing position by a conventional mechanism including a clip 19. The power source for the bulb 8 comprises two dry cells 4 in series, spring biased by a spring 14 towards the rear of the pen. A push-button 10, when depressed, is latched into a forward position so that the contact 14 of the cell 4 makes contact with a member 6 to complete the circuit to the bulb 8. The next depression of the button 10 releases the latching mechanism, of brown construction, thereby breaking the circuit.
Patent GB-883804-A (GB)
Title: A process for the thermal oxidative degradation and simultaneous purification of linear polyolefines
Inventor: WISSEROTH KARL
IPC: C08F8/50
Filed: 1960-07-29
Abstract: Linear polyolefines which have been prepared by the polymerization of olefines containing two to four carbon atoms using as catalysts heavy metals of Group IV(a), V(a), or VI(a) of the Mendelleeff Periodic System are simultaneously purified and thermally degraded by dissolving or swelling the polyolefine in an inert organic solvent and heating the solution in the presence of oxygen or oxygen-supplying compounds for 15 to 200 minutes at a temperature between 70 DEG  and 240 DEG C.  Optionally the heat-treatment may be effected in the presence of 2 to 20% of water and in the presence of such an amount of an alkaline compound that the pH in the aqueous solution after the heat-treatment step is 6 to 7. Substances which have a large internal surface on to which impurities are absorbed may be added to the polymers before, during, or after the heat-treatment. Suitable substances are carbon, aluminium oxide, bleaching earths, and kieselguhr.  The linear polymers may be polyethylene, polypropylene, or copolymers of ethylene and/or propylene and/or butene-1.  Specified solvents are tetra- or decahydro-naphthalene, cyclohexane, benzene, toluene, xylene, and ethylbenzene.  The oxygen-supplying compounds may be peroxides.  Alkaline compounds which may be included in the heat-treatment step are ammonia, sodium, potassium, or calcium hydroxide, hydroxylamine or aniline.
Patent GB-331432-A (GB)
Title: Railway track construction with unpierced iron transverse sleepers
IPC: E01B9/64
Filed: 1929-09-02
Abstract: 331,432. Heinemann, F. Sept. 2, 1929. Chairs, securing to sleepers; chairs with separate jaws; sleepers, metal, and securing rails thereto.-Unpierced metal sleepers have outer edges with downwardly and upwardly inclined teeth engaged by teeth on the means securing the rails to the sleepers. In Fig. 2, the sleeper b has teeth b<2> while the chair c has toothed lugs c<1>, c<2> and the bolts e have toothed heads e<2>, the bolts having- square heads. The rail is secured by a lug on one side of the chair and by wedgeplates d on the other side. In Fig. 11, the sleeper teeth are engaged by toothed lugs h<1> on chair members h<3> drawn together by bolts m, the bolt on one side of the rail passing through wedge blocks k in contact with the rail. Fig. 14 is a modification of Fig. 11 with the rail resting directly on the sleeper and secured by members i<3>, bolts m and wedges k. The top of the sleeper may be slightly curved, and straightened by tightening the bolts m. In Fig. 22, two sleeper parts b are forced into contact with toothed lugs p<1> on a chair p by a wedge-plate s, and a bolt r also passing through a wedge member o in contact with the rail. The upper limbs of the sleeper parts may also be curved.
Patent GB-1311898-A (GB)
Title: Tunnel formwork
IPC: E04G11/02
Filed: 1970-06-02
Abstract: 1311898 Wall and floor shuttering HUNNEBECK GmbH 2 June 1970 [3 June 1969] 26643/70 Heading E1S A tunnel formwork comprises a horizontal portion 1, two vertical portions 6, 7 which are movable with respect to portion 1 and the top of each of which is connected to portion 1 by a lever (8, Figures 7 and 8), and struts 18 to connect portion 1 to portions 6 and 7. Each two-armed lever 13 is connected  to a lever (8) to move the portion 6 or 7 inwardly. The levers on one side may be interconnected. The portions 6, 7 are mounted on jacks. The portion 1 which may comprise telescopic beams 3-5 support a formwork shell 26 on sections 25. The formwork can be moved from position to position by means of a vehicle 20 having three variable length supports 22, 23 and 30 adjustably mounted on the vehicle.
Patent GB-348488-A (GB)
Title: Improvements relating to corner brackets for bedsteads
IPC: F16B12/56
Filed: 1930-09-06
Abstract: 348,488. Bedstead joints. ADSHEAD, T. W., The Hollies, Queen's Cross, Dudley, Worcestershire. Sept. 6, 1930, No. 26657. [Class 52 (ii).] A metal corner bracket for a bedstead consists of a chill-casting 1 adapted to fit beneath and support a side rail 5 and carrying an internally threaded vertical bush 7 to receive a bolt 6 on the rail 5, the metal of the bracket being cast around the bush 7 and also around the extremity of the end rail 12 of the bedstead frame. The bush may have an external groove 8 or recesses into which the metal of the bracket is caused to flow.
Patent GB-1314449-A (GB)
Title: Electric signal converter
IPC: G06F7/70
Filed: 1970-06-02
Abstract: 1314449 Stochastic converters; random numbers SOC GENERALE DE CONSTRUCTIONS ELECTRIQUES ET MECANIQUES ALSTHOM 2 June 1970 [2 June 1969 2 Dec 1969 18 Dec 1969 20 Jan 1970 13 Feb 1970 9 March 1970] 26660/70 Headings G4D and G4H [Also in Division H4] In an analogue to digital or digital to analogue converter an intermediate step is made to a stochastic representation of the input signal which is then converted to the output signal. In one arrangement of an analogue to digital converter (Fig. 15) a counter 57 generates an output digital signal on parallel lines 49 which is converted to a stochastic representation 22 by comparison at 19 with a quasi-random noise signal 20. A band-pass filter 23 converts the stochastic signal to an analogue signal which is compared (53-54) with the input analogue signal to drive the counter 57 up or down. The frequency of clock pulses driving the counter 57 is made dependent upon the size of the error signal from comparator 54 (Figs. 19 and 20, not shown). The time constant of the band-pass filter 23 is made dependent upon the size of the output analogue signal 24 (Figs. 24-26, not shown). In another arrangement of an analogue to digital converter (Fig. 3, not shown) the input analogue signal is converted to a stochastic representation which drives a two-way counter in one direction. The digital output of the counter is converted to a stochastic representation to drive the counter in the opposite direction so that the output of the counter is the digital representation of the input analogue signal. In an arrangement of a digital to analogue converter (Fig. 4) an input digital signal on parallel leads 18 is compared at 19 with the signal 20 of a quasi-random noise generator 21 consisting of a clock-driven shift register 25 having feed-back via an exclusive OR-gate 26. The stochastic digital signal 29 is shaped by trigger stages 28 and 30 and converted to the output analogue signal by band-pass filter 23. Instead of a comparator 19 the input signal may be presented in complement form and a halfadder used (Figs. 7-12, not shown).
Patent GB-267153-A (GB)
IPC: C10B57/04
Abstract: 267,153. Kohlenveredlung Akt.-Ges., (Assignees of Kohlenveredlung Ges.). March 5, 1926, [Convention date]. Materials for making gas.-Fine or dust coal is separated from the charge before or during the feeding thereof into gas retorts. The separation may be effected by wind sifters, sieves, or electrical dust removers. The Specification as open to inspection under Sect. 91 (3) (a) refers also to producers. This subject-matter does not appear in the Specification as accepted.
Patent GB-1418541-A (GB)
Title: Biological shield for a nuclear reactor
IPC: G21C11/02
Filed: 1973-06-05
Abstract: 1418541 Biological shields EUROPEAN ATOMIC ENERGY COMMUNITY 5 June 1973 [6 June 1972] 26732/73 Heading G6C Biological shielding for surrounding the core of a nuclear reactor comprises a ferro-concrete body 3 on the inside of which is a layer having discontinuous cavities therein, and a protective metal layer 4. In one embodiment (Fig. la) the layer 2 comprises concrete containing a neutron absorbing substance, e.g. powdered quartz, and a foaming agent to create the cavities which serve to attenuate any shock waves arising from explosion in the reactor core and reduce fragmentation. In other embodiments (Fig. 2b) the layer comprises cylindrical metal members 5 with intervening corrugated or honeycomb spacers 6 (right-hand side of the drawing) or a combination of a foamed concrete layer 2 and the metal cylinders and spacers 5, 6 (left-hand side of the drawing).
Patent GB-951966-A (GB)
Title: Nuclear radiation indicating systems
IPC: G01T7/12
Filed: 1961-07-25
Abstract: 951,966. Ionization counters. REPUBLIC STEEL CORPORATION. July 25, 1961 [July 27, 1960], No. 26862/61. Heading H1D. [Also in Divisions G1 and H3] A halogen quenched Geiger tube for use with an alternating energizing voltage comprises a generally conventional construction of a stainless steel housing 45 forming the cathode and a coaxial tungsten anode wire 47, but is characterized by a conductive washer 50 which sits over a protuberance 49 on an insulating support disc 48 for the anode and is sealed in place, out of contact with the cathode, under a protective insulating cap 54. An insulated wire 51 from the washer extends through a hole 53 in the cap and is connected to the anode circuit of the tube. The arrangement is stated to avoid the production of spurious signals due to the A.C. operation of the tube. Specification 894,352 is referred to.
Patent GB-1005558-A (GB)
Title: Improvements in or relating to the manufacture of grids for lead-acid batteries
Inventor: HOWLETT JOHN CAVILL
IPC: H01M4/82
Filed: 1964-06-29
Abstract: 1,005,558. Making battery plates. DUNLOP RUBBER AUSTRALIA Ltd. June 29, 1964, No. 26877/64. Heading B3A. In a method of manufacture of grids for leadacid batteries, a cast strip of lead or lead alloy is reduced in thickness and the grids subsequently blanked therefrom, the casting, reducing and blanking steps forming a continuous process. The cast strip is passed through sizing rolls to give a reduction in thickness of approximately 7%. The grid may be formed from lead alloyed with antimony or calcium or from lead hardened by a dispersion therein of finely subdivided lead oxide, lead silicate or tungsten. In the case of a lead-antimony alloy, the thickness reduction of the cast strip may be approximately 20%.
Patent GB-180265-A (GB)
Title: Improvements in and connected with ties or scarves
IPC: A41D25/16
Filed: 1921-10-11
Abstract: 180,265. Paton, C., and Paton, R. Oct. 11, 1920. Drawings to Specification. Neck-ties.-To prevent a knitted tubular tie from stretching or tearing when being adjusted, a non-stretchable tape of about one-third the breadth of the tie runs the whole length of the tie, inside it. The tape is secured to the tie only at its ends.
Patent GB-794244-A (GB)
Title: Improvements in or relating to electrical connectors and more particularly to ceiling roses
IPC: H02G3/20
Filed: 1956-09-03
Abstract: 794,244. Ceiling-roses; two - part couplings. MASON, O. Sept. 3, 1956, No. 26912/56. Addition to 787,713. Class 38 (1). The connector or ceiling rose of the parent Specification is modified by the provision of the spring- loaded contacts 129 in the lower, detachable part 112 and of the fixed contacts 117 in the upper, fixed part 111, and by the provision of parallel grooves 143 in which contacts 117 are located.
Patent GB-171561-A (GB)
Title: Improvements in and relating to saws
IPC: B27B21/08
Filed: 1920-09-21
Abstract: 171,561. Luchansky, W., and Luchansky, C. Sept. 21, 1920. Saws.-The handle of a saw is formed on one side of the graduated blade 10 with a V-shaped portion 16, either side of which can be used as a mitre, and on the other side with a projection having a face at right-angles to the straight edge 12, so that the saw is also usable as a square. The edges are protected by strips of metal 17.
Patent GB-714150-A (GB)
Title: Improvements in or relating to apparatus for the control of respiration or anaesthesia
Inventor: ESPLEN JOSEPH RENTOUL
IPC: A61M16/00
Filed: 1950-11-04
Abstract: 714,150. Respiratory appliances. MEDICAL & INDUSTRIAL EQUIPMENT, Ltd. Feb. 4, 1952 [Nov. 4, 1950], No. 26964/50. Class 81(2) Breathing apparatus comprises a breathing bag housed in a pressure chamber associated with a compressed air inlet and means for automatically releasing air from the chamber on attainment of a predetermined pressure therein. A distensible sac 11 supplied with air or gas to be inhaled in known manner is contained within a chamber 10 for compressed air and is connected through a selector valve 12 with flexible piping 13 to the patient's lungs and with flexible piping 24 to a hand-operable breathing bag 23. When the selector valve 12, Figs. 5, 6, 7 (not shown), is set for automatic operation, compressed air is supplied to a Venturi tube 22 within an induction tube of an exhaust valve 15, Figs. 2, 3 and 4 (not shown). The compressed air then passes from the exhaust valve 15 through a pipe 14 to the chamber 10. A cover disc 15a of the exhaust valve 15 is carried by a lever 16 which can move about a pivot 16a and is held so that the exhaust valve 15 is closed by the action of a permanent magnet 19 on a plate 18 on one end of the lever 16, a counterweight 20 being provided at the other end of the lever 16. When the pressure within the chamber 10 has built up to a predetermined maximum with the resultant collapse of the sac 11, the cover disc 15a is lifted so that compressed air entering the apparatus and contained in the chamber 10 is exhausted to the atmosphere. The sac 11 is then able to expand and receive the patient's exhalations which are preferably passed through a carbon dioxide absorption cannister before being inhaled again. In the event of the pressure within the sac 11 becoming too great on receiving exhalations, excess gas from the sac 11 passes into the compressed air supply pipe 14 by way of a duct 28 and a one-way compensating valve 29, Figs. 11 and 17 (not shown). A manometer 30 is connected with the duct 28 to indicate the pressure within the sac 11. A bag 25 is connected with the exhaust valve 15 through a duct 26 provided with an adjustable valve 27, Figs. 8, 9, 10 (not shown), in order to compensate pressure waves set up by manipulation of the patient's lungs and regulate the speed of operation of the apparatus. When the selector valve 12 is set for automatic operation a leakway is provided whereby the hand-operated breathing bag 23 is maintained in inflated :condition. If desired the selector valve 12 may be set to connect the hand-operable bag 23 with the patient's lungs, the sac 11 being disconnected from them.
Patent GB-660023-A (GB)
Title: Automatic receiver tuning in multi-channel transmission systems
IPC: H04J3/00
Filed: 1948-10-18
Abstract: 660,023. Automatic frequency control systems. PATELHOLD PATENTVERWERTUNGS & ELEKTRO-HOLDING AKT.-GES. Oct. 18, 1948 [Oct. 17, 1947], No. 27037/48. Class 38 (iv). A radio receiver for multi-channel pulsesignalling systems is provided with automatic tuning control. The incoming pulsed carrier is passed through the usual frequency-changing stage to an I.F. amplifier 1, Fig. 2, which feeds a frequency discriminator giving an output in the form of short positive pulses, Fig. 1, or short negative pulses, according to the sense of the mis-tuning. These are applied through a condenser 23, which suppresses the D.C. component, to an amplifier 3, the output of which is fed to a peak rectifier 12 and condensershunted load resistor 25. A fraction of the output voltage from the valve 3 is fed from a potential divider 14 to the grid of a valve 4 which is thus excited at the same amplitude as the valve 3 but with inverted polarity. The inverted pulses are peak rectified by diode 13 and load 26. Resistors 25, 26 are connected in the grid circuits of valves 3a, 4a respectively, and apply positive voltages equal to the amplitudes a, b, Fig. 1. The larger voltage b opens the valve 3a and allows current to pass to a relay 8 to close a switch 9 for correcting the tuning. The smaller voltage a does not open the valve 4a owing to the provision of a bias resistor 11 in the common cathode lead of the valves 3a, 4a. If the mis-tuning is in the opposite sense, valve 4a opens and relay 7, 10 operates to effect correction. In Fig. 4, the pulses are applied with the same polarity to the double valve R, and the two outputs are applied to two oppositely-poled diodes 19, 20 having their load resistors 25, 26 connected in series so that the voltage across the output terminals 21 represents the difference between the absolute values of a and b and can be used to control an amplifier connected in series with a frequency control device. In a further modification of Fig. 2, the valves 3a, 4a are replaced by hexode valves, the common bias resistor 11 is omitted, and the pulses from one of the anodes of valves 3 or 4 are applied to oppositely-poled rectifiers which apply to the outer grids of both hexode valves a negative voltage equal to the sum of the absolute values of a and b, Fig. 3 (not shown).
Patent GB-1506757-A (GB)
Title: Apparatus for paint application
IPC: E01C23/22
Filed: 1975-06-26
Abstract: 1506757 Paint - coating apparatus ATOM CHEMICAL PAINT CO Ltd 26 June 1975 [5 Sept 1974 26 March 1975] 27087/75 Heading B2L Apparatus for painting lines on roads comprises a paint supply means I including a valve 3 and two parallel rows of opposed orifices 14 Fig. 4, a paint tank 2 above the supply means to feed paint thereto, a pair of roller brushes or the like each having bristles 5 Fig. 3 or projections 5a Fig. 5 arranged to counter rotate inwardly and a pair of cover members 6 for the rollers each connected at one end to the paint supply means and at the other end each having an edge adjacent the bottom of the respective roller. In operation the brushes are driven at about 5000 r.p.m. The tank may include a heat protective plate 15 Fig. 5, and the casing 16 may include an exhaust port 16a, 17a and a heat - insulating lining 17. A heater pipe 19 is provided together with a fire preventing bottom plate 18.
Patent GB-1298927-A (GB)
Title: Removal of fluorine values from aqueous solutions of fluosilicic acid
IPC: C02F1/52
Filed: 1970-06-04
Abstract: 1298927 Recovery of fluorine values as calcium fluoride; removing fluorine from water INTERNATIONAL MINERALS & CHEMICAL CORP 4 June 1970 [16 June 1969] 27103/70 Headings C1A and C1C Removal of fluorine values from aqueous solutions which contain at least 0À25% fluosilicic acid and having a pH of less than 3 containing combined fluorine substantially in the form of fluosilicic acid which comprises adding CaCO 3  to the solution in an amount sufficient to give a pH of from 3À0 to 3À6 and precipitate CaF 2  to yield a first solids free aqueous solution, adding lime to said first solids free aqueous solution to produce a slurry of pH greater than 7À0, combining the slurry with a second solids free aqueous solution obtained as above to produce a combined liquid of pH 5À5-7À0, separating the CaF 2  precipitated out to give an aqueous solution of substantially reduced fluorine content. A further embodiment involves adding lime, before removal of the first CaF 2  precipitate, to raise the pH to 3À6-3À8. The first solids free aqueous solution may be divided into 2 portions, one of 10-50% of its volume and a second of 50-90%, the latter being used as the second solids free aqueous solution. The reaction is preferably carried out at from 35‹ to 130‹ F. The solutions may be contaminated with 0À08% to 0À1% phosphate calculated as P 2 O 5 , or a water-soluble phosphate or sulphate may be added in the proportion of 0À25 to 1À0% by weight.
Patent GB-340934-A (GB)
Title: Improvements in packaging of eggs
IPC: A23B5/10
Filed: 1929-09-06
Abstract: 340,934. Packing eggs. BENOIT, L., 2614, West 50th Street, Chicago, U.S.A. Sept. 6, 1929, No. 27147. [Class 94 (i).] Eggs, which may have been removed from their shells, are placed in containers into which solid carbon dioxide is introduced before hermetically sealing.
Patent GB-1058414-A (GB)
Title: Improvements in fuel gas production
Inventor: LOM WALTER LOWENSTEIN
IPC: C01B3/38
Filed: 1963-07-09
Abstract: Fuel gas is obtained from C5 - 360 DEG  F. liquid hydrocarbons by subjecting the hydrocarbons to an oxidative sweetening, for example copper sweetening, to convert mercaptans to sulphides, re-running the hydrocarbons by subjecting them to flash vaporization, vacuum re-running, or steam distillation to obtain a low-sulphur overhead portion and a residue containing the bulk of the sulphur compounds, further desulphurizing the overhead fraction, and gasifying the resulting product by steam reforming.
Patent GB-1020727-A (GB)
Title: Improvements in broad-band dipoles for aerial systems
IPC: H01Q5/15
Filed: 1963-07-09
Abstract: 1,020,727. Aerials. H. KOLBE, and H. KOHLER. July 9, 1963 [Feb. 14, 1963], No. 27176/63. Heading H4A. A dipole aerial for operation at a higher and a lower frequency band is formed with two inductors 3 and 4 each disposed one half-wavelength at the higher frequency from a respective one of two feed points 2 so that the end sections 10, 11 are isolated at the higher frequency but coupled at the lower frequency by the impedances presented by the inductors. The dipole may be folded, Figs. 1 and 2 (not shown).
Patent GB-408306-A (GB)
Title: Improvements in electric starters for motor-vehicle and other engines
IPC: F02N99/00
Filed: 1932-09-30
Abstract: 408,306. Turning - gear. ROBERTS, J. H. T., 73, Wentworth Road, Golders Green, London. Sept. 30, 1932, No. 27221. [Class 7 (v).] An electric starting unit comprises an electric motor supplied from electric light mains, a reduction gear, and a length of flexible shafting provided at the end with a coupling for engagement with the free end of the engine shaft, the unit being provided with supports for attachment to the dumbirons of a motor car. Specifications 12150/10, [Class 7 (ii)], 12418/12, 180,165, and 205,174, [all in Class 7 (v)], are referred to.