baber/WOPTO huggingface dataset:
Patent GB-771564-A (GB)
Title: Control valve devices
Inventor: VOSS WALDEMAR EMIL
IPC: F16K41/08
Filed: 1954-04-09
Abstract: 771,564. Valves. ADAMS, Ltd., L. Feb. 18, 1955 [April 9, 1954], No. 10570/54. Class 135. A control valve suitable for compressed oxygen systems consists of a closure member 7 with a hemispherical tip coacting with a conical seating in the valve body and carried by a spindle 6 having a screw-threaded portion 8 working in a bush 9 which is secured in position by a nut 11 engaging a flange 10 of the bush. The bush, which is preferably of nylon, is tapered at its lower end where it is formed with a rounded flange 15 which is engaged by a conically bored thrust block 17 made, for example, of aluminium alloy and urged upwardly by a spring 18 so as to press the lower end of the bush 9 into contact with the valve spindle to provide a fluid-tight seal. The valve spindle, which is of stainless steel, carries a washer 16 also of stainless steel which protects the end of the threaded portion from engagement with the nut 11 when the valve is fully opened. The closure member 7 may be of polished unplasticized acrylic resin which is slightly resilient relative to the seating which is made for example of aluminium alloy. According to the Provisional Specification, the spindle may be of chromium-plated mild steel. Specification 755,021 is referred to.
Patent GB-105811-A (GB)
IPC: F41G1/32
Abstract: 105,811. Fornonzini, G. May 13, 1916. Sights. - Consists of foresights having an inclined elongated sighting-mark coloured black or white, and in backsights for use therewith. Fig. 1 shows a suitable shape for a white sighting mark, and Fig. 2 for a black mark, while Fig. 16 shows a side view of the foresight on the gun barrel. The two marks may be combined on a pivoted reversible sight, as shown in Figs. 5 and 6. The notch of the backsight is coloured black or white to contrast with the foresight. Two foresights and backsights, Fig. 7, may be used, arranged side by side with the sighting lines parallel, a bar being provided to hide the wrong foresight from the backsight. A modified form of double foresight is shown in Fig. 8, and the corresponding backsight in Fig. 9. Incisions may be made in the edges of the sights as shown in Fig. 13. Fluorescent material may be used to form the white mark.
Patent GB-561142-A (GB)
Title: Improvements in or relating to the manufacture of titanium pigments
IPC: C01G23/08
Filed: 1942-07-30
Abstract: 561,142. Titanium oxide. BRITISH TITAN PRODUCTS CO., Ltd., and ANCRUM, R. W. July 30, 1942, No. 10687. [Classes 1 (iii) and 95] The production of titanium dioxide in the form of rutile by calcination of the anastase form is effected in presence of an antimony compound and also of 2-10 per cent of a compound of zinc, magnesium, strontium, aluminium, or zironium. Calcination is effected at a temperature exceeding 1000‹ C., and the usual conditioning agents, e.g. potassium salts may be added. Specification 473,312, 479,072, and 549,120 are referred to.
Patent GB-1236702-A (GB)
Title: Method of covering golf balls
Inventor: MUCCINO PHYLLIS HUTCHINSON
IPC: A63B37/00
Filed: 1969-02-28
Abstract: 1,236,702. Covering golf balls. P. H. MUCCINO. 3 Feb., 1970 [28 Feb., 1969], No. 10756/69. Addition to 949,001. Heading B5A. A golf ball having a spherical non-wound centre is coated by centring the centre 7 in the hemi-spherical cavity of a mould half 1, containing a measured amount of liquid urethane polymer holding the centre until the polymer has set sufficiently to hold the centre, depositing urethonine polymer 10 in a similar cavity 4<SP>1</SP> in the other mould half 2, closing the mould and curing the polymer. The centre is made from a mixture of cis-1,4-polybutadiene and 1,3- butylene diol dimethacrylate cross-linked with a peroxide and preferably contains up to 25 parts by weight of 1,3-butylene glycol dimethacrylate, 1-4 parts by weight of peroxide, up to 50 parts by weight of a styrene-butadiene copolymer with a styrene content of at least 60 wt. per cent and 100 parts by weight of cis-1,4- polybutadiene. It may also contain a filler to give the correct weight.
Patent GB-1435629-A (GB)
Title: Apparatuses for limitin
IPC: B65H26/06
Filed: 1974-03-11
Abstract: 1435629 Web splicing &C MASCHINENFABRIK WIFAG 11 March 1974 [9 March 1973] 10761/74 Heading B8R An apparatus for limiting the length of severed trailing ends of expiring webs includes a scanning head 10, Fig. 1, which produces an output signal each time an adhesive signal generating foil 6 or the web roll 3 to be used next passes under the head 10, a clock generator 16, a circumferential speed counter 12, a splicing brush counter 14, Fig. 2, a splicing knife counter 15 and a logic control system which is effective to enable the counter 12 to count the clock pulses from the generator 16 between consecutive output signals from the head and to enable the counters 12, 14 to count the clock pulses from the appearance of one but the first of the output signals produced by the head 10. The counters 14, 15 are preset to a state corresponding to a mechanical delay time of a splicing brush and knife, respectively, and, arranged to produce respective splicing brush and knife enabling and trigger signals when their state coincides with that of the counter 12. The apparatus is further provided with a delay circuit actuated by trigger signals arranged to produce a knife enabling signal delayed by a time which is adjustable and proportional to the speed of the expiring web 7.
Patent GB-300874-A (GB)
Title: Improvements in centrifugal drying machines
IPC: B04B9/12
Filed: 1928-04-12
Abstract: 300,874. Croad, A. K., (Cowles Engineering Corporation). April 12, 1928. Driving.-A centrifugal dryer has a basket 6 supported on the top of the shaft, 5 and secured to it by a weight 15 having its centre of gravity substantially on the axis of rotation. The lower end of the shaft rotates in the bearing 11 and rests on the ball thrust bearing 12. A gasket 18 of vibration absorbing material, such as pure gum rubber, is arranged between the curved under surface of the bearing 11 and the supporting member 4; a similar gasket 21 is arranged between the member 4 and the nut 19. The machine is driven by the motor 10 and the effect of uneven loading is diminished by the weight 15 while the gaskets tend to absorb vibration. The motor provided is of insufficient power to overcome the frictional resistance in the bearing when the load is dangerously unbalanced. An oil reservoir 22 is formed in the cup 13 and the lower end of the shaft 5 is screw-threaded to carry the oil up through the bearing to the groove 23; it returns to the reservoir 22 by means of the groove 24.
Patent GB-679682-A (GB)
Title: Improvements in rotary snap-action switches
IPC: H01H21/40
Filed: 1950-05-03
Abstract: 679,682. Snap-action switches. BRITISH THOMSON-HOUSTON CO., Ltd. May 3, 1950. [May 17, 1949] No. 10933/50. Class 38 (v). A rotary snap-action switch comprises an insulating base 7 carrying fixed contacts 14, 17, 18 and a moving contact strip 9 pivoted on a rivet 39, the strip having an end portion 34 co-operating with the fixed contacts and a dimple 35 in its other end portion co-operating with apertures 22 ... 25 in the base 7. A U- shaped frame 6 supporting the base 7, is secured to a barrel 4 and has projections 30, 31 extending into the barrel to limit the rotation of the operating spindle 33 within the barrel. A U- shaped spring 36 secured to the moving contact strip 9, has inturned ends 37, 38 engaging a flat portion of the spindle 33, the flat portion having bevelled edges 41 ... 44. On turning the knob 5 to move the contact strip 9 from one position to the next, the strip is initially restrained against movement by the engagement of the dimple 35 in one of the apertures 22 ... 25. The clip 36 is in engagement with the flat sides of the spindle 33 so that the torque applied to it is the force applied times the radius extending from the axis of the spindle to the point on a flat side where the bevel begins. As the spindle 33 turns, the clip 36 spreads until the bevels come into contact with the clip, Fig. 7, and the effective radius through which the operating force is applied is increased to the distance between the axis of the spindle and the outmost corner of a bevel. The resulting sudden increase in torque overcomes the restraining influence of the dimple in engaging with an aperture, and the clip 36 and the strip 9 is snapped into the next position. The end 40 of the spindle 33, Fig. 4, is shaped so that the spindle may be assembled by pushing it in through the barrel 4 until the end 40 is forced between the legs of the clip 36, the legs then preventing accidental withdrawal of the spindle.
Patent GB-415203-A (GB)
Title: Improvements in the hydrogenation of fats and fatty oils
IPC: C11C3/12
Filed: 1933-04-12
Abstract: Sulphides of solid heavy base metals, preferably of the 5th and 6th groups, are used as catalysts for the hydrogenation of fats and fatty oils.  The best results are obtained with molybdenum and/or tungsten sulphide with or without admixture of rhenium, nickel, and/or cobalt sulphide.  Other sulphides which may be used are those of vanadium, mobium, tantalum, antimony, bismuth, chromium, uranium, titanium, zirconium, manganese, zinc, cadmium, and iron.  The catalyst may be added to the fat &c. in finely divided state but is preferably in pieces rigidly arranged in the reaction vessel.  The sulphides are preferably produced by treating the metal or metal compound with a volatile sulphur compound at temperatures above 200 DEG  C., or by decomposition of thio-salts under non-oxidizing conditions.  The hydrogenation is effected at temperatures of 20--300 DEG  C. and pressures of 1--1000 atmospheres.
Patent GB-758763-A (GB)
Title: Process and apparatus for the production of a refactory metal
IPC: C22B34/00
Filed: 1954-04-14
Abstract: 758,763. Producing refractory metals. NATIONAL LEAD CO. April 14, 1954 [April 16, 1953], No. 11069/54. Class 82(1). A refractory metal compact is produced by reacting a halide of the refractory metal and a reducing metal in a bath of a molten halide salt of alkali metal or alkaline earth metal or magnesium, consolidating the refractory metal in the bath to form the compact and expelling the compact from the bath by pressure. In the form of apparatus shown for producing titanium, magnesium chloride was melted to form a molten salt bath 13 within the tubular reactor 10, the upper part of the bath being kept at 840‹-880‹C. and the lower part at about 712‹C. The reactor was then purged with helium from a cylinder 26. Magnesium was fed to the surface of the bath via a pipe 16, fitted with an air-lock 18, and titanium tetrachloride vapour from a boiler 24 was fed to below the surface of the bath through a retractable lance 22. The level of the salt bath was kept constant through an overflow pipe 27 connected to a magnesium chloride recovery vessel 31. After sufficient titanium had been formed in the bath, the supply of the reactants was discontinued and the titanium was pressed into a compact against a metal end plug 11 by the ram head 34 of an upper hydraulic ram 33, the hydraulic jack 12 supporting the end plug then being released so that the titanium compact was expelled by a fractional amount of its thickness. Further additions of magnesium and titanium tetrachloride were made to the bath, the resultant titanium being compressed and the compact further expelled after each addition. The resultant compact contained not more than 15 per cent entrained salt and was arc melted to obtain pure titanium. The magnesium used was preferably 5 per cent in excess of the stoichiometric amount and the molten salt bath may be " seeded " with some titanium before the reactants are added.
Patent GB-166712-A (GB)
Title: Improvements in or relating to the coating of ferrous metals with a non-rusting alloy
IPC: C23C18/48
Filed: 1920-04-21
Abstract: 166,712. Rustproofing Syndicate, Ltd., and Newman, T. F. April 21, 1920. Coating.-Ferrous metals are coated with a non- rusting alloy, after removal of grease and oxidized scale, by immersion in a boiling solution of caustic soda containing a quantity of granulated tin and a smaller amount of mercury. An adherent alloy of tin-mercury is formed. If immersed in contact with a zinc-lined perforated basket, which acts as the positive electrode, the articles are coated electrolytically with tin-zincmercury alloy. The bath may be made up of 44 lb. of caustic soda in 100 gallons of water and may contain 56 lb. of tin and 1¢ lb. of mercury. Heavy coatings of metals may be deposited on the articles by electric, heat, or other treatment.
Patent GB-918898-A (GB)
Title: Improvements in or relating to blow moulding of synthetic plastics
IPC: B29C69/00
Filed: 1961-03-27
Abstract: 918,898. Blow-moulding hollow articles. BATTENFELD, W. March 27, 1961 [April 1, 1960], No. 11110/61. Class 87(2). A hollow body is blowmoulded from two extruded bands 15 of synthetic plastic by, placing them between the mould halves 11 and 12 while holding the bands apart, peripherally or at their longitudinal edges by spacing strips 16, closing the mould to weld, the edges of the bands, blowing air between the bands or through a needle perforating one of the bands and removing the spacing means before re-opening the mould. Instead of a rigid strip 16 and spring parts 18 a hinge-like member which is urged apart by spring action or a self-springing member in the form of a hairpin can be used, Figs. 2 and 3 (not shown). The bands may be of different colours. Instead of blowing air between the bands a sub-atmospheric pressure may be created between the bands and the mould parts through air extraction passages in the mould.
Patent GB-800938-A (GB)
Title: Improvements in and relating to the control of electrical heating apparatus
Inventor: MOULE GORDON HENRY
IPC: G05D23/19
Filed: 1955-04-18
Abstract: 800,938. Switching systems for heating resistances. METROPOLITAN - VICKERS ELECTRICAL CO., Ltd. April 18, 1956 [April 18, 1955], No. 11139/55. Class 38 (4). In a circuit of the type whereby two or more heating elements are normally arranged in series, but for rapid initial heating, one or more of the elements are connected directly across the supply under the control of a thernal relay, devices are included to ensure that in the event of failure of the thermal relay, the circuit will revert to normal series working. In the system shown in Fig. 1, HI, H2 are heating elements connected together and to contact b of changeover relay R1. On-off switch CS energizes three parallel paths; (a) a circuit comprising coil RW4 of magnetic relay R4, heater 4 of thermal relay R3 and contact 5 of thermal cutout R2, (b) heater of energy regulator S over contacts 1, and (c) H1, H2 in series also over contacts 1 and normally closed contacts CC of R1. Energization of RW4 closes contacts 6, completing circuit of RW1 over contact 7 of R3, thus connecting H1, H2 in parallel, with the common connection b fed from the mains through thermal cut-out R2 and heavy current fuse F2. After a predetermined interval, bimetallic contacts 7 open under the action of heater 4, releasing RW1 and reverting H1, H2 to series connection under the control of energy regulator S and fed through light current fuse F1 In the event of heater 4 becoming opencircuited, coil RW4 will lose its supply, releasing RW1. Should contacts 7 of R3 fail to open, thermal cut-out R2, which has a longer delay period than R3, will operate, thus again releasing RW4, and hence RW1, and, as an additional precaution, breaks the main supply to common connection b. In a simplified circuit, Fig. 2 (not shown), heater H1 is short-circuited by operation of RW1, thus connecting H2 directly across the supply, and in another modification, a switch CSA may be inserted in the neutral, disconnecting H1 and limiting the rapid heating to that given by H2 only. The heaters may or may not be of equal rating. Specification 517,538, [Group XXXVII], is referred to.
Patent GB-573406-A (GB)
Title: Improvements in and relating to frequency modulated radio transmission
IPC: H03C3/36
Filed: 1943-07-12
Abstract: 573,406. Frequency modulation; electro-optical light valves. PHILIPS LAMPS, Ltd. July 12, 1943, No. 11313. Convention date, July 11, 1942. [Classes 40 (iii) and 40 (v)] In a process of frequency modulation, an electro-optical device, such as a Kerr cell, is controlled by the signal, or preferably by an integrated version of the signal, to modify the intensity of light passing to a photo-cell, thus producing in the cell circuit a voltage which is a sinusoidal function of the signal or integrated signal. Two such sinusoidal functions in quadrature are combined multiplicatively with carrier oscillations also in quadrature, their resultant being a carrier modulated in phase proportionally to the control signal, and therefore modulated in frequency proportionally to the original signal, if that signal is integrated before it is used for controlling the Kerr cell. As shown in Fig. 1, light from a source S passes through two complementary Nicol prisms PI, P2 and an interposed Kerr cell to which.control voltages V related to the signal are applied, the emergent light passing to a photo-cell F from the circuit of which an output voltage is derived. This output is caused to be a sinusoidal function of the signal by (a) making V proportional to the square root of the signal by the use of valve circuits with suitable response'curves, or (b) making V a combination of a constant voltage and a relatively small voltage representing the signal, or (c) making the length of the path l through the cell proportional to the signal, for example by providing the cell with reflecting walls A and directing light into the cell by a rotatable mirror E under the control of the applied voltage so as to vary the number of to and fro passages before emerging, as shown in Fig. 4. Fig. 5 shows the system as a whole. The carrier wave SP is divided into two quadrature phases by shifters PS1, PS2, and these are modulated in balanced modulators M1, M2 by two voltages derived from the apparatus PM of Fig. 5 and proportional respectively to the sine and the cosine of the applied signal. The modulation products are combined at T. Fig. 7 shows an alternative system using three pairs of Niool prisms, and two pairs of interposed Kerr cells. Light from the source S is divided into two beams, both passing through three Nicols and two Kerr cells, and being reoombined at the photo-cell F. A carrier wave is supplied in quadrature to the Kerr cells K1<1>, K1<11>, and the applied signal V controls the Kerr cells K2 <1>, K2<11>, an output circuit O tuned to the carrier frequency being provided in the photo-cell circuit.
Patent GB-849248-A (GB)
Title: Improvements in and relating to fire extinguishing compositions
Inventor: BONA PAUL DE
IPC: A62D1/00
Filed: 1958-04-10
Abstract: 849,248. Fire-extinguishing compositions. SOC. BIRO FILS. April 10, 1958, No. 11410/58. Class 47. A non-inflammable composition for extinguishing magnesium fires contains by weight from 5 to 20% pitch, 10 to 30% polyethylene and 50 to 80% urea. The composition is preferably in the form of a powder passing a number 60 screen with a retention not exceeding 10%. The powder particles may be coated with a water repelling agent.
Patent GB-309560-A (GB)
Title: Improvements in or applicable to typewriters
IPC: B41J3/00
Filed: 1929-04-12
Abstract: 309,560. Maguregui, P. G. April 12, 1928, [Convention date]. Void [Published under Sect. 91 of the Acts]. Drawings to Specification. Keyboards; letter-spacing mechanism.-For simultaneously writing two or more characters a typewriter is provided with one or more additional sets of keys operating additional type-levers arranged in sets having separate printing points, and the escapement mechanism is adapted for variable-spacing by providing a stop-device operated by one or more keys or spacing-bars in different sets. The stop-device may consist of a movable support carrying stop-pins for an escapement pawl. The additional keys preferably comprise keys for the vowels, comma, and full stop.
Patent GB-417947-A (GB)
Title: Improvements in wireless receiving apparatus
IPC: H03J3/28
Filed: 1933-04-19
Abstract: 417,947. Valve circuits for wireless reception. PYE RADIO, Ltd., Radio Works, and ROOT, E. V., 176, Milton Road, both in Cambridge. April 19, 1933, No. 11452. [Class 40 (v).] In a superheterodyne receiver designed to receive two tuning ranges and having the oscillator and tuning condensers ganged and shaped to give a constant frequency difference over one of the ranges, the circuit values for the second range are so chosen that the frequency difference is correct at two frequencies the difference between which is not greater than three-quarters of the maximum range through which the circuit is capable of being tuned. This is done in the example described by giving a comparatively large value to the residual capacity and a comparatively small value to the inductance of the oscillator circuit. Examples of suitable values of capacity and inductance are given in the Specification.
Patent GB-114877-A (GB)
IPC: B60C7/12
Abstract: 114,877. Frommann, F. A., and International Motor Truck Wheel Corporation. April 13, 1917. Spring wheels with continuous outer rigid ring and rubber cushions; disk-wheels. -Rubber cushions S are immovably mounted in pockets formed by radial webs V in the rim, and are fitted witli shoes having lugs T which engage similar lugs P on the hub member so as to allow radial and circumferential play between the shoes and the hub member. The rubber blocks allow similar play between the shoes and the rim. The hub member is built up of two castings having radial webs E and circular webs C, D, the castings being bolted together to hold a bush N. Flanged rings H are bolted on so as to provide guides for the rim member U, which is flanged tc receive the rubber cushions, and has annular webs with cross webs on its outer periphery, so 'as to produce staggered pockets into which blocks of wood or other material may be inserted.
Patent GB-1377253-A (GB)
Title: Trimellitic acid anhydride recovery
IPC: C07C51/573
Filed: 1972-03-13
Abstract: 1377253 Trimellitic acid anhydride recovery STANDARD OIL CO 13 March 1972 11523/72 Heading C2C A process for the recovery of trimellitic acid anhydride from the crude product obtained by the steps of (a) molecular oxygen oxidation of a pseudocumene-containing C 9  aromatic hydrocarbon fraction in the presence of acetic acid and a catalyst comprising a polyvalent transition metal and a source of bromine, and (b) the subsequent removal of acetic acid from the oxidation product and heating of said oxidation product to dehydrate the trimellitic acid contained therein to trimellitic acid anhydride, comprises flash distilling the trimellitic acid anhydride-containing crude product to yield vapours containing the anhydride, steam stripping the vapour condensate and vacuum distilling the liquid residue from the steam' stripping to recover the anhydride.
Patent GB-1155166-A (GB)
Title: Process for Splitting Acetals
IPC: C07C45/51
Filed: 1968-03-11
Abstract: 1,155,166. Splitting of acetals. MELLEBEZONS. 11 March, 1968 [29 March, 1967], No. 11835/68. Heading C2C. The splitting, by hydrolysis or alcoholysis, of an acetal or hemiacetal is effected using as a catalyst a sulphonic ion exchange resin, e.g. of the polystyrene sulphonic type, in its acid form. The preferred temperature is from 60-140‹ C. The preferred pressure is from 1-12 atmospheresand should maintain the reaction medium in the liquid phase at the operating temperature. The hydrolysis process may be carried out in the homogeneous liquid phase by the use of a water-miscible solvent, e.g. the alcohol produced by the hydrolyse reaction. Examples hydrolyse methylol and a mixture of isomeric butyl butyrals and form methylol from formaldehyde dibutyl acetal.