baber/WOPTO huggingface dataset:
Patent GB-732109-A (GB)
Title: Portable respirator with electrostatic filter for the precipitation of solid and liquid particles
IPC: B03C3/32
Filed: 1951-11-23
Abstract: 732,109. Electrostatic filters. SOC. FINANCIERE D'EXPANSION COMMERCIALE ET INDUSTRIELLE. SOC. ANON. SFINDEX. Nov. 23, 1951 [Nov. 25, 1950], No. 27586/51. Class 39 (1). [Also in Group VI] In a portable dust mask, in which the dust is precipitated electrostatically, the inhaled air is first ionized, by a radio-active substance, and then passed through an electrically charged screen of interleaved plates, rods or wire mesh. In general form, the mask has an air inlet 2, which may be cylindrical or rectangular, around the wall of which a radio-active substance is enclosed in a carrier 3, and there is also a central electrode by means of which a potential difference is set up across the intake tube, to cause motion of the air and improved ionization. The air is directed by deflectors 4, 5, 6 to the precipitator 7, the elements of which are electrically charged by a power source 11, which may be either dry batteries or the rectified output of a multivibrator valve circuit. The precipitator may comprise a number of spaced parallel plates of metal or metallized paper set parallel to the air flow, alternate plates being connected to opposite poles of the voltage source, see Fig. 5 (not shown), or it may comprise two spirally wound spaced plates or a number of concentric cylindrical electrodes, alternate electrodes being of opposite polarity. In a different arrangement a number of fine mesh wire screens or perforated foils are set behind each other transversely to the air flow, alternate screens being oppositely charged. In yet another arrangement a metal or metallized block, having a number of axial ducts 45, Fig. 12, through which the air flows, co-operates with a corresponding number of spaced rods 47, the rods being connected to one pole and the block to the other. In the further device, according to Fig. 14, a number of rods 57, connected to one pole, are interposed in the spaces between a number of similar rods 56 connected to the other pole.
Patent GB-857620-A (GB)
Title: Improvements in or relating to sieves or screens
Inventor: TUNLEY ALLAN ASHMEAD
IPC: B07B1/12
Filed: 1958-08-28
Abstract: 857,620. Sifting apparatus. BAKER PERKINS Ltd. Aug. 14, 1959 [Aug. 28, 1958], No. 27604/58. Class 117 A screen frame comprising longitudinal tubular members 1, transverse members 2 and a central member 3 carries s cylindrical brushes 4 extending longitudinally and supported between the members 2 and 3 so that the bristles of adjacent brushes touch or overlap. Each brush comprises a central rigid spine 6, Fig. 3, from which bristles 5 extend radially and lie along a helical path. The ends 7, 8 of the splines engage apertures in the members 2, 3, and the brushes on one side of the member 3 are staggered relative to those on the other side. The members 2 may be curved as indicated in Fig. 2. In a modification, the brushes have their spines, which engage the member 3 and are free from bristle, extended to reach, and engage with, the transverse members on the opposite side. When a number of such screens are used end-to-end, the screen is extended over the junction between adjacent frames by transverse brushes 13, Fig. 1, secured to the members 2.
Patent GB-352318-A (GB)
Title: Improvements in central buffing and draft gear for railway vehicles
IPC: B61G9/06
Filed: 1930-09-16
Abstract: 352,318. Railway vehicles. GLASCODINE, R. T., 2, Central Buildings, Westminster. Sept. 16, 1930, No. 27611. [Classes 103 (v) and 103 (vi).] Combined buffer and draw-gear; underframing of bodies.-In a central buffing and draw-gear for railway vehicles, lateral buffing or other shocks are absorbed by means of resilient cushions of rubber or like material disposed between the gear and the vehicle underframe, the cushions preferably being faced with metal plates or liners which constitute bearing surfaces for the spring follower plates or for the draw-rod head. In Fig. 2 the invention is shown as applied to a gear of the known type in which the coupler-head shank 2 is connected to the yoke 6 by means of a single slot-and-cotter connection, and the spring 17 is located between front and rear follower plates 11, 12 associated with abutments 15, 16 on the underframe. The cushions 21 referred to consist of rubber strips mounted on the vertical faces of the longitudinal sills 14 by means of bolts 22 and nuts 24 which also secure in position the liners 20. The latter are prevented from longitudinal displacement by contacting with the abutments 15, 16, and form guides for the follower plates 11, 12, which are preferably flanged to provide larger sliding contact surfaces. In a modification, Fig. 6, separate cushions 61, 63 and liners 60, 62 are provided for the follower plates 54, 55 in an arrangement incorporating tandem springs 52, 53 adapted in known manner to be compressed in series between the follower plates 54, 55 and a plate 72 formed integral with a spacing sleeve 71. In this case, longitudinal movement of the liners is prevented partly by the abutments 57, 58 and partly by stops 64, 66 formed either by separate metal attachments or by moulding the appropriate ends of the rubber cushions with suitable tianges. In a further construction, Fig. 4, the cushions 39, 41 are secured to castings 34, 35 riveted to the centre sills 36, 37, and the liner plates 38 form guides for the draw-rod head 33.
Patent GB-797991-A (GB)
Title: Improvements relating to seats
Inventor: MACHON PHILIP CHARLES
IPC: A47C7/18
Filed: 1955-09-29
Abstract: 797,991. Seat-cushions. DUNLOP RUBBER CO., Ltd. Sept. 12, 1956 [Sept. 29, 1955], No. 27694/55. Class 52(4) A seat with a main frame 11 has a detachable upholstered back component comprising a rigid base pan 12 foam rubber or other resilient filling 13 and covering material 14, the base pan having a turned over edge 15 which engages around the main frame but is separated therefrom by the edge 16 of the covering material and textile material and the pan is retained on the frame by bolts 20 and nuts 21 secured to frame cross-member 22. In a modification the frame is of square crosssection and the pan flanges are of corresponding shape. In another modification the base pan 41 is tensioned by bolts 42 whose heads are permanently attached to the pan and whose shanks pass through apertures in frame member 44.
Patent GB-389032-A (GB)
Title: Improvements relating to hydraulic operating means for grinding or abrading machines
IPC: B24B47/06
Filed: 1932-10-06
Abstract: 389,032. Grinding-machines. CHURCHILL MACHINE TOOL CO., Ltd., Atlantic Street, Broadheath, near Man. chester, and ASBRIDGE, H. H., Claremont, Washway Road, Ashton-on-Mersey. Oct. 6, 1932, No. 27777. [Class 60.] In a grinding-machine with hydraulicallyoperated table and grinding wheel feed, lost motion means is provided for allowing feed of the grinding-wheel without feed of the table. A piston a and rod c of a cylinder b are connected to a slide d with boss j. The worktable carries a spindle g slidable in the boss j. When nuts h clamp the boss against a collar i the table e and the rod c are rigidly connected and operation of the piston causes table feed. Tappets m reverse the valve n at the end of the stroke and a pawl o effects feed of the grinding-wheel. By slackening the nuts h to allow lost motion between the table e and the slide d the stroke of the table can be reduced without affecting the operation of the parts m, o.
Patent GB-476270-A (GB)
Title: Improvements in wooden airscrews
IPC: B27M3/10
Filed: 1936-10-13
Abstract: 476,270. Composite blocks. HEINE, H., (trading as HEINE MOBELFABRIK PROPELLERWERK, H., [Firm of]). Oct. 13, 1936, No. 27799. Convention date, Oct. 22, 1935. [Class 145 (ii)] [Also in Group XXXIII] Wooden airscrews are constructed of laminae comprising alternate layers of thin laminae 22 and laminae 23 made up of rods glued together side by side in longitudinal direction. A number of laminae 1 bent at the ends adjacent their ultimate use at the hub of an airscrew are constructed with the laminae of differing thicknesses, the thickness. being disposed where the radius of curvature at the hub is smallest. The laminated block so constructed is then cut cross-wise so that there are obtained a number of rods and these in turn are assembled side by side and glued together to form the rod laminae.
Patent GB-1319084-A (GB)
Title: Bandages and backings therefor
IPC: A61K6/00
Filed: 1970-06-09
Abstract: 1319084 Bandages E R SQUIBB & SONS Inc 9 June 1970 [13 June 1969] 27912/70 Heading A5R A backing for application to an adhesive layer to form a bandage, particularly but not exclusively for intra-oral use, comprises by weight from about 40 to about 50% beeswax, from about 20 to about 25% filler. The resin from about 25 to about 30% terepene resin or modified terepene resin, and may be a polymerization product of terepene hydrocarbons or a modified terpene resin such as a terpene-phenolic resin. The filler may be kaolin. The adhesive may be a gum-like bonding composition comprising a water soluble or swellable hydro-colloid admixed with a water insoluble gum-like elastic binder. Pigments and colouring agents, such as titanium dioxide, may be present in the backing in amounts of about 0.5-1.5% by weight. The backing may also include 0.05-0.5% by weight of preservatives, stabilizers or anti-oxidants, such as butylated hydroxyanisole, for the resin. Medicaments may be applied to that surface of the bandage which contacts the body surface.
Patent GB-874915-A (GB)
Title: Improvements relating to photo-sensitive circuits employing transistors
Inventor: CRAXTON ROBERT TREVOR
IPC: G01J1/44
Filed: 1957-09-04
Abstract: 874,915. Photo-transistor relay circuits. ASSOCIATED ELECTRICAL INDUSTRIES Ltd. Sept. 9, 1958 [Sept. 4, 1957], No. 27942/57. Class 40(6) A photo-sensitive indication comprises two transistors coupled together so that when one conducts the other is non-conducting, and a photo-sensitive element connected so that the conductive state depends on the radiation reaching the element. In the embodiment shown in Fig. 1, transistors X 2  and X 3  have a common emitter resistance R 4 , and a coupling resistor R 3  between the collector of X 2  and the base of X 3 . The emitter-base potential of X 2  is determined by a potential divider formed by a resistor R1 and a photo-sensitive transistor X 1 . When the light intensity is low, the collector-emitter impedance of X 1  is high and the emitter-base potential on X 2  is such that it conducts and X 3  is cut off, the relay RL1 being de-energized. As the light intensity increases, the emitter-base potential of X 2  is reduced due to the increased current through X 1  until X 2  cuts off and X 3  conducts energizing RL1. In an alternative embodiment (Fig. 2, not shown) an additional transistor is connected as an emitter follower in the coupling path containing R 3 .
Patent GB-933671-A (GB)
Title: Die casting method and apparatus
IPC: B22D17/00
Filed: 1961-08-02
Abstract: 933,671. Casting-machines. NATIONAL LEAD CO. Aug. 2, 1961 [Aug. 8, 1960], No. 28035/61. Class 83 (1). A thick-sectioned part 22 of a die-casting is subjected to a forging pressure after it has solidified to a predetermined temperature below the liquidus point. The pressure is applied by an hydraulic plunger 38 to metal in an extension 36 of the die cavity. The plunger may be so shaped as to form a bore in the casting, Fig. 8, and so actuated as to apply repeated blows.
Patent GB-445417-A (GB)
Title: Improvements in or relating to the manufacture of alkali metal addition products of aromatic hydrocarbons
IPC: C07C51/15
Filed: 1934-10-01
Abstract: The reaction of alkali-metals with naphthalene and its homogues is effected in aliphatic monoethers containing a CH3O-- group, and having a ratio of oxygen to carbon atoms of not less than 1 : 4. According to examples sodium is reacted with naphthalene in dimethyl ether, methyl isopropyl ether, dimethyl ether and methyl normal butyl ether, methyl ethyl ether, anisole and dimethyl ether, and dimethyl ether in xylene; and potassium is reacted with naphthalene in dimethyl ether.  The presence of the alkali metal-hydrocarbon compound is indicated by the appearance of a green colour in the solution, and the compounds which appear to be alkali metal addition compounds attached to the hydrocarbon, can be converted by the passing in of CO2, into naphthalene and dihydronaphthalene dicarboxylic acid salts; by passing in CO2 simultaneously with the reaction with metal, the addition products are converted into the dihydronaphthalene dicarboxy acid salts only.  Homologues of naphthalene react similarly.  Other ethers suitable as solvents for the reaction are methyl normal propyl ether and methyl ethyl ether. The higher mixed ethers and hydrocarbons and alkyl sulphides may usefully be used as diluents, mixtures specified being one part of dimethyl ether to four or five parts by volume of hydrocarbon, or to ten parts of diethyl ether.
Patent GB-1459469-A (GB)
Title: Imaging process
IPC: G03G17/04
Filed: 1974-06-25
Abstract: 1459469 Electrography XEROX CORP 25 June 1974 [27 June 1973] 28046/74 Heading G2H Images are formed by: providing in imagewise configuration a layer of an injecting material on an electrically conductive substrate to form an injecting master electrode, said injecting material being capable of generating and injecting electric charge carriers in response to an electrical field alone; providing a second electrode member; providing a layer of a suspension of particles in an insulating liquid between said injecting master and second electrodes; and applying an electrical potential difference between said conductive substrate and said second electrode of magnitude sufficient to cause imagewise migration of particles as a result of charge carrier injection from said injecting material until an image is formed. Many suitable organic and inorganic injecting materials are specified and may be applied alone or combined with a binder; materials exemplified being polyvinyl carbazole alone, mixed with metal-free phthalocyanine, and combined with a melamine formaldehyde resin binder. The substrate may be coated with the injection material by any convenient means, e.g. electro-photographically or by stenciling. Image forming particles exemplifed are a carbon black and polyester resin composition, magenta dyed melamine formaldehyde resin, and iron oxide coated with melamine formaldehyde resin. A plurality of copies may be produced from a single injecting master electrode. The image formed on the second electrode may be transferred to another surface.
Patent GB-464048-A (GB)
Title: Improvements in vacuum cleaning appliances
IPC: A47L9/04
Filed: 1935-10-11
Abstract: 464,048. Vacuum cleaners. OWENS, L. G. Oct. 11, 1935, No. 28083. [Class 8 (i)] A vacuum cleaner comprises a floor-tool to which is attached a pipe, serving as a handle, and connected by a hose to a casing mounted on wheels or runners and containing the fan, motor and dust bag. The floor-tool 4 is mounted on end wheels 6 and contains two aligned rotary brushes 9, the spindles 10 of which carry pinions 14 gearing with spur-wheels 15 in the interior of the wheels 6. The spindles 10 are supported in a common central bearing 11 and in slots in brackets 16, pivoted at 17 to the casing, and connected by a bar 12 which carries the bearing 11. The brackets are also formed with slots engaging the spindles 7 of the wheels 6, so that the spindles 7, 10 can be adjusted simultaneously.
Patent GB-1311012-A (GB)
Title: Character display cursor
IPC: G09G1/00
Filed: 1970-06-10
Abstract: 1311012 Cathode-ray tube circuits TELETYPE CORP 10 June 1970 [16 June 1969] 28090/70 Heading H4T A cathode-ray tube character display arrangement comprises means for indicating a particular character position (a cursor), for example for keyboard entry of the next character, wherein the normal bright-up pulses supplied to the tube during a raster-type scan are inverted in the cursor position to provide a "negative" display. As shown characters for a 16-line, 32-character per line display are entered, e.g. from a keyboard via unit 23 and gate 24 into a recirculating store 22 synchronous with the CRT display timing circuits. As each character is entered it normally counts up by one a nine-stage counter holding the cursor position and continuously compared in 26 with the contents of a similar counter cycled in synchronism with the tube deflection circuits, equivalency controlling over line 44c the inversion of the bright-up signals being generated at that time by unit 45 from the character readout from memory. It also times the entry into memory of the next character being held temporarily in 23. The tube beam deflection is effected at 27 by a continuously-increasing X scan voltage and a 16-step Y scan voltage (one step for each of 16 lines of characters) on which is superimposed on eight-column character scan (seven columns P1-7 for display and one intercharacter space P0). The character generator, which comprises one 7 Î 12 diode matrix for each character in repertory, generates for each of the columns P1-P7 a 12-bit bright-up signal. Circuit 31 enables the suppression of so-called "control" characters if desired, and this suppression may be accompanied by a closing-up of the data to eliminate the resulting spaces.
Patent GB-1534200-A (GB)
Title: Apparatus including a table
IPC: A61G15/16
Filed: 1976-07-06
Abstract: 1534200 Tables SIEMENS AG 6 July 1976 [9 Aug 1975] 28112/76 Heading A4H Dental apparatus comprises a table 6 for receiving instruments and mounted on a support 1 by means of two arms 8, 9 connected at their adjacent ends for relative pivotal movement about a vertical axis 7 by a generally vertical connecting member 10, the arm 8 being connected by its other end to the support 1 for pivotal movement about a vertical axis 4, the arm 9 being connected by its other end to the table 6 for pivotal movement about a vertical axis 14, and the length of member 10 being approximately equal to the thickness H of the table,  whereby the table is pivotable into a storage position between the arms 8 and 9. The arm 8 is disposed below a horizontal plane 12 containing the lower surface of the table and the arm 9 is generally horizontal and lies above a horizontal plane 13 containing the upper surface of the table. The arm 8 is formed by a pair of vertically spaced parallel links of equal length which are individually connected between the support 1 and the member 10. The length of arm 8 is approximately half the length of the arm 9 and of the length of the operating side of the rectangular table.
Patent GB-535825-A (GB)
Title: Improvements in pins
IPC: A44B1/40
Filed: 1939-10-19
Abstract: 535,825. Pins. ALONSO. J. D., ORLANDO, E., and RODRIGUEZ M. Oct. 19, 1939. No. 28226. [Classes 43 and 63] A pin, particularly a hat-pin, is made of wire helically wound and formed with a sharp point. The end of the pin remote from the point may be sewn in a hat, soldered to a plate screwed to an ornamental head, or moulded in the head. As shown the pin 12 is soldered to an ornament. Reference has been directed by the Comptroller to Specifications 210,967, [Class 43], 10094/12 and 12336/13, [both in Class 63].
Patent GB-992397-A (GB)
Title: Improvements in or relating to storage containers
IPC: B65D90/503
Filed: 1961-08-03
Abstract: 992,397. Storage tanks. W. NICOLAT. Aug. 3, 1961 [Aug. 4, 1960; Sept. 21, 1960], No. 28234/61. Heading E1T. [Also in Division G1] A storage-container assembly has an outer 1 and an inner 2 container with means 6 for varying the pressure in the sealed space 9 between the containers and means 7 for measuring the pressure in the space 9 whereby leaks in either container may be detected. The means 6 may be an air pump and the means 7 a pressure gauge which regulates operation of the pump 6 through a control line 8. One of the containers may be a deformable plastic bag whilst the other is rigid. If the outer container is rigid as in Fig. 1 the pressure in the space 9 is made negative, but if the deformable container is outside the rigid arc the pressure in the space 9 is made positive. Hygometric means or chemical detection means may also be used to investigate leakage into the space 9. Fig. 3 shows the preferred form of surfaces of the containers facing the space 9. The space 9 may be subdivided, if desired.
Patent GB-312016-A (GB)
Title: Improvements relating to ovens for baking, roasting and drying purposes
IPC: F26B21/00
Filed: 1928-10-03
Abstract: 312,016. Cox, J. B. Oct. 3, 1928. Bakers' ovens.-An oven for baking, roasting or drying of the kind in which heating gases from burners ascend into a casing surrounding the heating-chambers and escape from the casing at a low level, preferably that of the burners, the oven is formed as a self-contained structure with two or more heating-chambers b, c, which are separated by a heat-resisting floor or partition d. In the construction shown the chambers b, c are independently heated by fish-tail burners e, and the products escape through two flues f connected to a common uptake h. The two compartments of the oven may be put into communication through an opening in the partition d controlled by a damper d'. In a modification (Figs. 4-6, not shown) the burners for the upper and lower chambers are arranged at the same level. In further modifications the two chambers b, c are heated from a common source, the gases passing first around the upper chamber (Figs. 7 and 8, not shown), or first around the lower chamber (Figs. 12 and 13, not shown). In other forms of the invention (Figs. 9-11 and 14, 15, not shown) dampers are provided for varying the distribution of the heating-gases between the two chambers. Specification 191,865 is referred to.
Patent GB-727026-A (GB)
Title: A device for adjusting the pressure in a cylinder printing press
IPC: B41F3/80
Filed: 1951-12-04
Abstract: 727,026. Transmitting rotary motion. WILHELM, J., [trading as ASBERN MASCHINENFABRIK KOMMANDIT-GES.]. Dec. 4, 1951 [Dec. 5, 1950], No. 28416/51. Class 80 (2) [Also in Group XVI]. The drive to the cylinder 1 of a travelling cylinder printing press (see Group XVI), from a gear 10 caused to run along a fixed rack 11, is transmitted by a driving bolt 13 having an eccentric part 14 engaging the end of the cylinder; the eccentricity of this part is the same as that of the cam part 5 of the shaft 2 on which the cylinder 1 is mounted, and is maintained in the same direction by toothed or other gearing 15, 16, 17 between the shaft and the bolt. The shaft 2, which is adjustable in the side frames 4 of the travelling carriage by a hand lever 7 to vary the printing pressure at a, has a concentric part 2a on which the gear 10 rotates. The gears 16, 17 are supported by a plate 18 screwed to a thickened part 10a of the gear 10; the eccentric part 14 of the driving bolt enters a block 20 radially slidable between a pair of jaws 21 on the cylinder 1, as a safety measure against jamming.
Patent GB-1441857-A (GB)
Title: Swing check valve
IPC: F17D3/08
Filed: 1974-06-26
Abstract: 1441857 Valves GROVE VALVE & REGULATOR CO 26 June 1974 [27 June 1973] 28439/74 Heading F2V In a swing check-valve the body comprises a central spherical portion 12 and cylindrical upstream and downstream portions 20, 22 welded to it, the end of the upstream portion forming a seat for a valve member 30 pivoted on a shaft 38. A part cylindrical liner is provided between the seat and the inner end of the downstream cylindrical body portion 22. The liner is cut away at 46 to permit the valve member to pivot to the fully open position. Cut-outs 56, 66 are provided in the central body section to facilitate insertion and withdrawal of the valve member. These may be sealed by plates not shown. A vertical cylindrical body portion 58 is provided on the top of the central spherical body portion and a domed lid 72 is attached to it. A vent valve 76 may be provided in the lid.