baber/WOPTO huggingface dataset:
Patent GB-742530-A (GB)
Title: Improvements in or relating to heat reflecting filters and methods for the manufacture thereof
IPC: G02B5/28
Filed: 1952-09-05
Abstract: 742,530. Coating by vapour deposition. VOGT, A. Sept. 5, 1952 [Sept. 5, 1951], No. 22394/52. Class 82(2). [Also in Group XX] A base of plastic material which has a residual vapour pressure not greater than 1 x 10- 4 mm. Hg. is coated with two or more layers to form an interference filter by vapour deposition. The base may be of polystyrene such as Styroflex, Styrofol, " Styrafoil " (Registered Trade Mark) or Polyflex, or of polymethacrylic acid esters such as " Plexi-glass " (Registered Trade Mark) provided these have the required residual vapour pressure. Preferably two different materials are applied in alternate layers, and a suitable pair of substances is titanium dioxide and magnesium fluoride. As shown, a roll of film base 1 may be run in either direction through the vacuum chamber 2 by means of conveyer belts 5, 6 which pass over and round rolls 7, 8 and 9, 10 respectively. The inlet 3 and outlet 4 are provided with lock chambers 24-29 which are connected with preliminary vacuum pumps 36-38 which produce an increasing degree of vacuum, thus enabling the high vacuum pump 39 to produce a very high vacuum in chamber 2 while the base is continuously introduced and removed. The materials to be deposited are contained in vessels 40, 41 and 42 which are heated electrically. The film is given a preliminary run through the vacuum chamber to remove any occluded gases, and it is then passed through in the opposite direction while one of the vessels 40-42 is heated to deposit the first layer. The other layers are similarly deposited. If desired, three layers may be deposited in one run by heating all three vessels and using screens 56-59. Specifications 730,640 and 730,642, [both in Group XX], are referred to.
Patent GB-442143-A (GB)
Title: Improvements in the manufacture of coloured or decorated rubber mats
IPC: B29C37/00
Filed: 1934-08-01
Abstract: Ornamented rubber mats are made by spraying a film of coloured rubber latex or solution through stencils on to a calendered sheet and after drying and removal of the stencil, vulcanizing in a mould under pressure.  If more than one colour is employed, each coat is dried before the next is applied.  To protect the design, a final translucent coat may be applied to the surface. Specifications 283,984, [Class 70], and 399,051 are referred to.
Patent GB-203700-A (GB)
Title: Improvements in microphones and similar apparatus
IPC: H04R21/02
Filed: 1923-09-06
Abstract: 203,700. Signal Ges. Sept. 7, 1922, [Convention date]. Drawings to Specification. Detecting subaqueous sounds.-Relates to the design of tuned microphones, including those for use in detecting subaqueous sounds, the object being to avoid the variation in the natural frequency of the diaphragm which arises from variation in the elasticity of the granules. The Specification gives formulµ for the relation between these quantities. A displacement of the microphone diaphragm gives rise to a restoring force composed of two parts, the first a variable component due to the granules, and the second a constant component due to the diaphragm or other constructional elements. The invention consists in making the second or constant part substantially greater than the first, for instance, four times as great.
Patent GB-782272-A (GB)
Title: Improvements in or relating to electrical position-follower systems
Inventor: BOWEN JOHN HENRY
IPC: G21C7/12
Filed: 1954-08-03
Abstract: 782,272. Electric correspondence control systems. METROPOLITAN-VICKERS ELECTRICAL CO., Ltd., and BOWEN, J. H. July 25, 1955 [Aug. 3, 1954], No. 22482/54. Class 40 (1). The angular positioning of the rotors of a group of selsyn-type receivers 300 (Fig. 1), is effected by control of the D.C. voltages applied to the three windings of the receivers obtained from lines 302, 303 from the output of a frequency converter 321 (Fig. 2), whose slip-rings 325 are fed by an alternator 31.4 driven by a motor 31:3, and whose rotor windings are driven in synchronism by the motor 313 through a differential gear 317, whereby movement of the other input shaft 319 to the differential obtained by operation of a control unit 326 produces a corresponding change in the D.C. voltage outputs of the converter 321 to reposition the receivers 300. The new position of the rotors of receivers 300 is compared with the desired position by a selsyn receiver 332 whose stator is connected via lines 307 to the main receiver feeders 302, and whose rotor is coupled via a shaft 334 to a switch 331 also connected to the control shaft 319, any disparity between the angular positions of the shafts causing tha switch to operate to disconnect the control unit 326 from shaft 319. As shown the complete control equipment is duplicated. The alternator 314 may be dispensed with by connecting the slip-rings 325 of the frequency converter 321 to the polyphase supply to the motor 313.
Patent GB-968480-A (GB)
Title: Stereophonic loudspeaker system
IPC: H04R5/02
Filed: 1961-06-22
Abstract: 968,480. Stereophonic loud-speaker systems. RADIO CORPORATION OF AMERICA. June 22, 1961 [July 15, 1960], No. 22690/61. Headings H4J, H4R and H4X. A stereophonic loud-speaker system comprises a cabinet having a front, a rear and two side walls, a sound conducting opening in each side wall, a diaphragm loud - speaker mounted in each side portion with its diaphragm angularly facing toward the adjacent opening in the associated side wall and sound directing waveguides mounted in the side portions of the cabinet and acoustically connecting the diaphragm of each loudspeaker with the adjacent opening in the side wall. The waveguides each consist of a plurality of vertical partitions positioned in spaced relation to each other. A rectangular cabinet 5 (Fig. 1) has side chambers 9, 10 in which are mounted loud-speakers 7, 8 each with its axis of radiation 16 (Fig. 4) at an acute angle to the adjacent side wall. The chambers 9, 10 are separated by partitions 11 and a central chamber 6 houses a stereophonic F.M. or A.M. radio receiver 45 and two amplifiers 48, 49. The loud-speakers 7, 8 are of the moving coil type and are mounted on baffle boards 37. The waveguides are defined by vertical and parallel partitions 27 to 33 which provide ducts which are less than one wavelength across at the highest useful frequency of transmission. The partitions may be curved or variously shaped and angled, provided the various path lengths from the plane of the baffle board to a forward listening point 0 are the same for all ducts. The virtual sound sources 22, 23 are outside the cabinet.
Patent GB-149678-A (GB)
Title: Improvements in adjusting mechanisms for brake-rods of railway, tramway and other vehicles
IPC: B61H15/00
Filed: 1920-07-30
Abstract: 149,678. Chaumont, A. July 31, 1919, [Convention date]. Rod couplings.-Relates to gear for operating turn-buckles with which operating rods for brake mechanism are provided for the adjustment of their length and comprising a fixed casing x in which is mounted an operating shaft y having a worm v thereon engaging a worm wheel w on the turnbuckle part a. Instead of the wheel w splined on the part a to permit the longitudinal movement of the part with the brake rod, as described for example in Specification 16319/06, [Class 103, Railway &c. vehicles], the wheel w is fixed on the part a and the worm v is slidably mounted on the shaft y. The sockets b<1> and cooperating part of the casing x may be square to prevent unscrewing. The sockets b' are preferably pivoted to the rods b as shown. The Specification as open to inspection under Sect. 91 (3) (a) is not limited to brake mechanism and describes also the following subject matter : To protect the threaded parts and gearing from dust a sheath or guard which also serves as a grease box is provided. This may be in the form of an extension d of the member a, Fig. 5 (Cancelled), or of the lock nuts where such are used, packing e on the rods b forming a closure, or it may comprise a sheath o of sheet-iron attached to the rods b, Fig. 6 (Cancelled), or to the member a. Where the member a is cut away or open at the sides, a socket may be provided to protect the rods b within the member a in addition to the sheaths o. To secure the parts in adjusted position, a cotter-pin i, Fig. 5 (Cancelled), may be passed through a hole in the rod b and a slot in the member a or the slot may be in the rod b; or a spring b, pin or catch n, Fig. 6 (Cancelled), may be arranged to engage one or more grooves p in the member a; or a spring latch or pawl may be mounted inside the dust guard for engagement with grooves in the member a in such manner as to be entirely automatic in action. Arrangements are also shown of turnbuckles operated by worm and ratchet gearing enclosed in casings, the gearing and casing being adapted to move longitudinally with the parts a, b and the member a being either tubular as in Figs. 5 (Cancelled) and 6 (Cancelled), or a rod as in Fig. 3. This subject-matter does not appear in the Specification as accepted.
Patent GB-804330-A (GB)
Title: Improvements in or relating to centrifugal separators
Inventor: STICKER WILHELM
IPC: B04B1/20
Filed: 1956-07-23
Abstract: 804,330. Centrifugal separators. CONSTRUCTIONS GUTNAKD. July 23, 1956, No. 22779/56. Class 23 In apparatus, for separating solids from liquid, comprising inner and outer drums 5, 18, and a screw conveyer 8 mounted on the inner drum, apertures 14 are provided in the inner drum for the discharge of the separated liquid from the annulus between the drums. The solids and liquid mixture passes from an inlet 3 through an accelerator 6 to the annulus. The separated solids are washed by liquid supplied by a pipe 30 and passing through holes 35 into the annulus. The washed solids are discharged through apertures 11 into a chamber 12. The separated liquid flows through the inner drum and through passages 19 to a rotary chamber 20, a stationary skimming device 21 being located in the chamber 20 for the discharge of liquid from the apparatus. The outer drum is directly driven by a pulley 27, and the inner drum is driven by sun and planet gearing 23, a pulley 28 being provided for varying the relative speeds of the drums. The drums may be wholly conical.
Patent GB-599381-A (GB)
Title: Concrete mixers
IPC: B28C5/32
Filed: 1944-11-17
Abstract: 599,381. Mixing - machines. MARRIOTT, A. W., WEBB, E. H., and WINCET, Ltd. Nov. 17, 1944, Nos. 22883/44 and 2576/45. [Class 86] A concrete mixer has a mixing pan with a fixed outer wall 1, rotating base 2, and rotating inner wall 3, the materials being carried by the base past a plurality of circumferentially arranged mixing elements to be treated successively thereby. The materials are supplied in the requisite proportions to the inlet X by devices such as those described in Specifications 527,028 and 577,388, and are carried by the rotating base 2 past a series of four rotating stirrers 4, 5, 6, 7, to an outlet Y. Each of the stirrers 4, 5, 6, 7, comprises four blocks 8 mounted to rotate on a central vertical axle which is driven by the engagement of a pinion thereon with a gear wheel on a vertical shaft 24 which rotates with the central wall 3. The latter is rotated with the base 2 by a driving shaft 11, belt 13, and pulley 18. The base 2 is also driven by a pinion engaging rollers mounted below the base, the pinion being carried by a horizontal shaft driven through bevel gearing from the vertical shaft 24. A wearing plate 20 is carried on the inner surface of the wall 1 and a rubber layer covers the base 2. According to the second Provisional Specification the driving belt assists discharge of the mix.
Patent GB-1492266-A (GB)
Title: Process for the recovery of styrene and substituted derivatives thereof
IPC: C07C15/46
Filed: 1975-05-23
Abstract: 1492266 Extractive distillation LEUNAWERKE "WALTER ULBRICHT" VEB 23 May 1975 [13 June 1974] 22889/75 Heading C5E Styrene, or substituted styrene, is recovered from mixtures by extractive distillation at reduced pressure and in the presence of a polymerization inhibitor, such as hydroquinone, using a solvent comprising an N-alkyl-#- caprolactam. The caprolactam can be N- methyl-#-caprolactam or N-ethyl-#-caprolactam and can be used in admixture with ethylene glycol or diethylene glycol. The styrenecontaining mixture can be produced by the cracking of benzines or diesel oils or by the dehydrogenation of ethyl benzenes and can be separated into a C 8  fraction, a C 7  and lower fraction and a C 9  and higher fraction by fractional distillation prior to the extractive distillation. The extractive distillation can be carried out at 45-50‹ C. and 30 mmHg.
Patent GB-634601-A (GB)
Title: Improvements in or relating to domestic coolers
IPC: F25D31/00
Filed: 1947-08-18
Abstract: 634,601. Bottle coolers. SHAW, J. Aug. 18, 1947, No. 22919. Divided out of 631,030. [Class 29] An evaporative cooler for milk bottles comprises a reservoir 21 for water having a top plate 22 with holes 27 through each of which is inserted a tubular cage 24 of unglazed earthenware or other porous material with vertical bars 34b spaced apart to form air passages between them. Bottle supports 23 are pressed up from the bottom of the reservoir. The porous cage may comprise a cylinder with vertical slots 25 and may have a porous cover 33. The upper parts of the cages pass through holes in a plate 29 supported by uprights 30 and provided with a handle 31. The porous rods 34b may pass through individual holes in the plates 29, 22. Each rod may be made up of a number of short tubular elements threaded on a wire and shaped to increase their superficial area.
Patent GB-1475968-A (GB)
Title: Anordecircuit for the output stage of a short-wave transmitter
IPC: H03F3/24
Filed: 1975-05-23
Abstract: 1475968 Cavity resonator BBC BROWN BOVERI & CO Ltd 23 May 1975 [28 May 1974] 22934/75 Heading H1W [Also in Divisions H3 and H4] A circuit coupling the output tube anode 1 of a VHF or short wave transmitter to its load, e.g. an aerial, comprises a conductive cylindrical housing 3 coaxially surrounding a first cylindrical conductor 2, itself coaxially round the tube anode 1; a second cylindrical conductor 4 and an output collector lie off-centre parallel to the axis within the housing; a first slide 5 bridges the second conductor and the housing wall and over at least part of its range bridges also the first conductor 2 and the housing wall; a second slide 6 bridges the second conductor and the output collector. An equivalent lumped circuit, subject to unwanted resonances (Fig. 1 not shown) comprises a capacitor-tuned parallel tuned circuit between anode and ground, with D.C. blocked by a capacitor and an anode load connecting the anode to its supply; a tapping on the tuning inductor feeds a second coupling inductor tapped to match the output load. In the equivalent cavities a variable tuning capacitor C1 lies between the housing base and the feet of the first and second conductors 2, 4, which are at D.C. ground potential, blocked from the tube anode 1 by the gap capacitance C2. First slide 5, representing the top on the tuning inductance, bridges with HF contacts the second conductor 4 and the housing wall over its full range, but bridges also the first conductor 2 and the wall over the high frequency part of its range. Slide 6 representing the tap on the coupling inductor bridges the second conductor 4 and the output conductor: it may be fixed with provision for external matching. A vapour-cooled anode may be ventilated by duct 10, and the tube changed by removing this duct. Anode supply andif necessary water may be brought in via inner conductor.
Patent GB-615900-A (GB)
Title: Metal elements for use as metallic surfaces forming part of apparatus for the production and manipulation of butter and similar substances
IPC: A01J19/00
Filed: 1945-09-06
Abstract: 615,900. Making hollow-ware. ECREMEUSES MELOTTE SOC. ANON. Sept. 6, 1945, Nos. 23000 and 23001. Convention dates, July 27, 1944, and May 14, 1945. [Class 83 (ii)] [Also in Groups I and II] Ornamental metalwork.- A metal element having a surface provided with cells of uniform shape distributed uniformly thereover is adapted for use in apparatus for producing or manipulating butter or similar substances, the shape and dimensions of the cells being chosen so as to conform to the laws of capillary phenomena, each cell being completely separated from adjacent cells by ridges to which the liquid contained in the cell adheres and forms a layer constituting a barrier preventing adherence of the butter or similar substance to the base of the cell. The honeycombings may be formed by knurling, rolling or pressing, their depths being made proportional to their areas of cross-section. The base A, Fig. 1, of each honeycombing may be flat as shown, or rounded or may taper to a point, and may be of any cross-sectional shape. To assist further the water retaining qualities of the honeycombings, the surface may be treated to eliminate its lustre as by blowing thereon with a low-pressure air blast an impalpable powder such as clay, alumina, or any other substance which has beforehand been dried, finely crushed and screened in order to remove all hard grains.
Patent GB-1457030-A (GB)
Title: Data processing system
IPC: G06F12/06
Filed: 1974-05-23
Abstract: 1457030 Data processing system INTERNATIONAL STANDARD ELECTRIC CORP 23 May 1974 [29 May 1973] 23064/74 Heading G4A In a data processing system comprising a plurality of memory modules, at least one of which is normally in a standby module, and associated memory control units, a plurality of computer modules connected to respective inputs of each of the control units access the memories by addressing the memory control units and each control unit has an associated reconfiguration unit storing the address of its associated control unit and data indicating which (if any) of its inputs are blocked, each reconfiguration unit being arranged such that any one of the computer modules can access and modify its stored address and blocking data, e.g. in order to replace a faulty memory module by the standby module. As described two computer modules 1A, 1B access three memory modules (not shown) via respective memory control units (only one, 2A, shown) each of which has an associated reconfiguration unit (only one, 3A, shown). The address to which the memory control unit responds is stored in register R1 and the data indicative of blocked inputs in register R2 in the reconfiguration unit. Either computer may load, modify, or read registers R1, R2 by sending the address of a reconfiguration unit to the units where it is compared in comparator 6 with a wired in address. The priority circuit 7 in the selected unit issues control signals to enable the accessing computer, or in the case where both computers make simultaneous access requests, a predetermined one of the computers to send address or blocking data via line (E)D1 to registers R1, R2, e.g. in order to replace a faulty memory and associated memory control unit by the standby memory and associated memory control unit, to read via gates Q1, Q<SP>1</SP>1, ... Qn, Q<SP>1</SP>n the contents of registers R1, R2, or to load registers R1, R2 with signals indicative of the states of a group of preset switches 12, the last procedure being used initially to set up the system. The reconfiguration unit also sends acknowledgement signals to the computers indicating that an access is being honoured or not, in the latter case e.g. due to an access conflict (see priority circuit 7 above). A unit 13 is also provided to load register R2 with status data, e.g. representing a parity fault in the reconfiguration unit address issued by the accessing computer, or a fault detected in the associated memory control unit.
Patent GB-504601-A (GB)
Title: Improvements in closure devices for collapsible tubes
IPC: B65D47/06
Filed: 1938-08-04
Abstract: 504,601. Closures for collapsable tubes. RUETZ, T. Aug. 4, 1938, No. 23078. Convention date, July 1. [Class 125 (iii)] A closure for collapsable tubes comprises a tubular member 6 slidable in the neck 1<1> of the tube 1 and having a closure cap 3 secured to its outer end, a spherical enlargement 7 at the inner end to form a stop, at least one lateral inlet opening 8 in the enlargement 7, and an outlet 9 at an intermediate point in the wall of the member 6. The cap 3 is positioned or the member 6 by a central pin 4 which terminates in a slopping surface 4<1> adjacent the outlet 9. The outlet 9 is so disposed that the tube 1 can be completely closed by pushing the member 6 therein without securing the cap 3.
Patent GB-902983-A (GB)
Title: Improvements in and relating to the polymerisation or curing of epoxides
IPC: C08G59/42
Filed: 1959-07-06
Abstract: Spirobi-(meta-dioxane) epoxides of the formula <FORM:0902983/IV(a)/1> where D is a vicinal epoxy group containing an unsubstituted hydrocarbon radical, the group containing 2 to 18 carbon atoms, and Z is hydrogen or an alkyl group of 1 to 4 carbon atoms, are polymerized by a catalyst or a polyfunctional hardening agent. The catalyst must belong to the group of strong mineral acids, partial esters of phosphoric acid, sulphonic acids, metal halide Lewis acids, Lewis acid boron derivatives, alkali metal hydroxides, quaternary ammonium compounds and secondary and tertiary amines.  The polyfunctional hardening agent must belong to the group of polycarboxylic acids, their anhydrides and polyesters, polyols, polythiols, polyfunctional amines, polyisocyanates, and urea-, melamine-and phenol-aldehyde condensates.  Mixtures of these hardeners may be used.  In the epoxide, the radical D may contain an alkyl, aryl or alkenyl radical, and the epoxy group may be linked directly to the dioxane ring or through an aliphatic or aromatic hydrocarbon linkage.  The catalyst may be added in a solvent, e.g. an organic liquid or water.  Curing may be effected in two stages, the first producing a gel which may be applied in a solvent as a coating or otherwise manipulated before final curing at temperatures up to 250 DEG C. Specified solvents for forming coating compositions are xylene, ethyl acetate and methyl isobutyl ketone.  The resins may also incorporate fillers and pigments and modifiers such as phenol-, urea-and amine-formaldehyde resins and polyepoxides, e.g. polyglycidyl ethers of polyhydric compounds, butadiene dioxide, soybean oil epoxide, 3,4-epoxycyclohexylmethyl-3,4-epoxycyclohexane carboxylate, vinyl cyclohexene dioxide and bis (2,3-epoxycyclopentyl) ether.  The examples describe the polymerization of 3,9-bis(1,2-epoxy-1-methylethyl)-, 3,9-bis(3,4-epoxybutyl)-, 3,9-bis (1,2-epoxy-1-ethylpentyl)-, 3,9-bis(3,4-epoxycycohexyl)-, 3,9-bis(1,2-epoxyethyl)-, and 3,9-bis (1,2-epoxypropyl)-spirobi-(meta-dioxane).  The catalysts or hardeners used are BF3-ethylamine, KOH, 2,4,6-tri(dimethylaminomethyl) phenol, BF3-piperidine, H2SO4, 2,2-bis(p-hydroxyphenyl) propane and KOH, adipic acid, maleic anhydride and ethylene glycol, phthalic anhydride and p,p1-methylene dianiline.  Some of the products are described as foamed.  Uses: Coatings, potting electrical components, bonding, moulding, calendering &c.  Specification 887,593 is referred to.
Patent GB-691896-A (GB)
Title: Method and apparatus for continuously determining the conductivity of a liquid
IPC: G01N27/06
Filed: 1951-10-03
Abstract: 691,896. Conductivity of liquids, measuring. DIRECTIE VAN DE STAATSMIJNEN IN LIMBURG. Oct. 3, 1951 [Oct. 4, 1950], No. 23082/51. Class 37. In order to electrically isolate the liquid in the test chamber 17 from the flow, while permitting a desired rate of flow therethrough, the incoming liquid from 8 falls on a rotating disc 3 which scatters it in drops on to the walls 6 of a container whose outlet 10 feeds the chamber 17, and the outlet 15, 9 from the chamber 17 similarly falls on a rotating disc 5 which scatters the liquid in drops on to the walls of a container 7 whose outlet 11 continues the flow. Comparison is made with a standard liquid in chamber 22 and both chambers and a supply coil are maintained at constant temperature by circulation of a liquid in jackets 13, 14, 16. Where the liquid has a solid suspension, the centrifuges serve to prevent sediment forming.