baber/WOPTO huggingface dataset:
Patent GB-760020-A (GB)
Title: Improvements relating to supporting fibre and like building boards as ceilings and roof linings
IPC: E04B9/26
Filed: 1953-10-29
Abstract: 760,020. Wood-screws. HAY, H. M. Jan. 27, 1955 [Oct. 29, 1953], No. 29898/53. Class 89 (2). [Also in Groups X, XXII and XXIII] A screw for securing building-boards to the underside of laths, comprises a piece of wire bent to corkscrew form with a lateral projection, on or adjacent to the head, which is cranked upwardly then downwardly with the free end upwardly inclined. In one embodiment, the corkscrew shank c, Fig. 1, extends into a looped head f which ends in a collar e and projection d, the cranked form of which is to enable it to engage the flange of lath a. The head may be aligned with, or at an angle to the projection, and instead of being a circular loop, it may be rectangular or triangular with one or both of the lower limbs forming the projection or projections. In another arrangement, the head is omitted and shank c, Fig. 5, terminates in the projection d. In further arrangements, the projection is doubled back on itself to form a T-head across the top of the shank. Reference has been directed by the Comptroller to Specification 665,492.
Patent GB-1147913-A (GB)
Title: Improvements in and relating to collapsable table and two bench assemblies
Inventor: CARDY ERNEST WILLIAM
IPC: A47B3/14
Filed: 1967-06-29
Abstract: 1,147,913. Combined tables and benches. E. W. CARDY. 19 March, 1968 [29 June, 1967], No. 30014/67. Heading A4H. Two table tops 1, 2 and four benches, 11, 12, 21, 22 are pivoted to four leg structures a, b, c, d with the two inner leg structures b, c connected together by elongated members 13 .... 16. Each table top and its two benches may be swung up about the hinges on the inner leg structures b, c to a collapsed position in which the table top and the benches are in the same plane and the outermost leg structures a, d are folded against the table tops. Pivoted loops 17 limit the downward movement of the top and benches. Wheels 18, 19 may be provided on at least one side of the two inner leg structures b, c and may be brought into engagement with the ground by toggles or jacks. An articulated strut may be connected between each outermost leg structure and a table top.
Patent GB-409700-A (GB)
Title: Improvements in piston skirt expander
IPC: F16J1/06
Filed: 1932-10-26
Abstract: 409,700. Pistons. PERFECT CIRCLE CO., Hagerstown, Indiana, U.S.A. Oct. 26, 1932, No. 30029. Convention date, June 9. [Class 122 (i).] The skirt 6 of a piston for internalcombustion engines has a substantially vertical slot 7, and is expanded by a spring metal member 12 extending transversely across the piston. The member 12 has free ends 13 which engage the skirt on either side of the slot 7, the ends being bent into contact at 17. The curved parts are provided with slits 18 to increase the resiliency. The other end of the expander engages the diametrically opposed portion of the skirt at 16, 16. The expander may be provided with sharp projections 19 where it is in contact with the skirt. Elongated holes are provided in the expander to receive the gudgeon-pin 14, and the sides of the expander bear against the gudgeon-pin bosses 9 which are carried by webs 8, depending from the head of the piston.
Patent GB-671655-A (GB)
Title: Improvements in photographic reflex cameras
IPC: G03B19/12
Filed: 1946-10-08
Abstract: 671,655. Reflex photographic cameras provided with range-finders. BOLSEY, J. Oct. 8, 1946 [Dec. 31, 1940], No. 30034/46. Class 98 (i). A reflex camera is provided with a short home base range-finder having one of the basedefining reflectors coupled to the camera objective, the said two reflectors being situated so that the beam accepted by one is passed in a direction parallel to the front wall of the casing to the other across the beam incident on or reflected from the reflex focusing mirror and then to a viewing aperture in the rear wall of the casing, the focusing mirror beam forming no part of the range-finder system. As shown, a reflex camera 10 having a translucent viewing screen 15 surrounded by a wall 29, has apertures above and on opposite sides of the objective 12, and a viewing window 26 in the rear wall of the camera in line with one of the apertures, the light beam from the other aperture being reflected to the windows by a pivotallymounted reflector 22 coupled to the objective and a stationary reflector 24. The reflected beam may pass either between the wall 29 and the front wall 14 of the camera or through apertures in the wall 29 above or below the screen 15. The Specification as open to inspection under Sect. 91, states that the coupling between the objective (which need not be that of a reflex camera) and the pivotally-mounted range-finder reflector may be by means of an arm as 34 attached to the reflector following either an eccentric cam ring, as 35, or a cam of varying thickness carried by the objective. Alternatively, there may be provided a manually rotatable shaft carrying worms of different pitches, one engaging a toothed ring on the objective and the other the arm connected to the reflector. The range-finder may be exchangeably mounted on the lens board or each interchangeable lens may have its own rangefinder mounted on a common support. A combined coupled range-finder and view-finder for alternative usage may be provided. Two slotted members 36, 41 slidable on retaining- pins 38, 43 carry respectively a view-finder eyelens 39, range-finder mirror 24 and lens 40; and a view-finder field lens 44. The movements of the slidable members are co-ordinated by a pivoted lever 45 having rounded ends engaging in notches 47 in both members. This subject-matter does not appear -in the Specification as accepted.
Patent GB-843209-A (GB)
Title: Conjunct chlorination procedure for polyolefines
IPC: C08F8/20
Filed: 1957-09-25
Abstract: A polyolefin is chlorinated to a desired total combined chlorine content in two steps, one consisting of chlorination in suspension to derive a portion of its combined chlorine content, the other of chlorination in solution to derive the other portion of its combined chlorine content.  The steps may be carried out in any order while specified polyolefins are those from ethylene, propylene or butylene which may be made by either the low or high pressure processes.  The suspension chlorinating step may take place by suspending finely-divided polyolefin in an inert liquid, e.g. water to form a slurry which is agitated while being treated with chlorine at between room temperature and 5 degrees below the sintering temperature of the polyolefin preferably in the presence of a free-radical catalyst. The solution chlorinating step may take place by subjecting the polyolefin to the action of a chlorinating agent at a temperature at least that required for the solvent to dissolve 1 percent of the polyolefin and which is not in excess of that at which dehydrochlorination of the polymer occurs, in solution in a solvent which is inert to the chlorinating agent, e.g. per chloroethylene or carbon tetrachloride, and preferably using a free-radical catalyst. Specification 834,905 is referred to.
Patent GB-305712-A (GB)
Title: Improvements in or relating to the process for the decomposition of chromium ore andthe manufacture of chromium compounds free from iron
IPC: C22B34/32
Filed: 1927-11-10
Abstract: 305,712. Carpmael, A., (I. G. Farber industrie Akt.-Ges.). Nov. 10, 1927. Chromium and iron chlorides; chromium oxide. -Chromium ores are given a preliminary opening-up treatment, as by heating strongly and quenching in water or by melting with 5 per cent or more of an alkaline agent in a non- oxidizing atmosphere, and then treated at temperatures up to 800‹ C., and preferably, at 500- 650‹ C., with hydrochloric acid or chlorine, or both in the presence or absence of reducing agents. Treatment with chlorine in presence of charcoal followed by lixiviation with dilute hydrochloric acid leaves chromium oxide free from iron; with hydrochloric acid in presence of a reducing agent leaves as residue pure chromic chloride; and with mixed hydrochloric acid and chlorine or the 'acid alone in absence of a reducing agent leaves a residue of chromium oxide. Specification 275,945 is referred to.
Patent GB-848116-A (GB)
Title: Improvements in and relating to fastener and retainer assemblies and to the combination of these assemblies with a socket
Inventor: SECKERSON CLIFFORD ALEXANDER
IPC: F16B5/06
Filed: 1957-09-27
Abstract: 848,116. Stud and socket fasteners. F.T. PRODUCTS Ltd. Sept. 17,1958 [Sept. 27, 1957], No. 30363/57. Class 44. An assembly for attaching a member to an apertured panel 18 comprises a retainer 10 having a slot sheared out near the centre of the retainer 10, a flap 13 cut out of the body of the retainer 10 and folded back to lie parallel with the body of the retainer 10 above the slot and prongs 11 formed in the body of the retainer for securing the retainer to the member and a fastener 12 formed from a strip of spring metal bent to a loop for entry into the aperture in the panel and having also a pair of outwardly bent feet 16, 16a and a neck adjacent the feet which engages in the slot of the retainer to connect the fastener to the retainer. As shown the member is a carpet and the prongs 11 are thrust through its canvas backing and folded over to grip the latter. Longitudinal ribs 14 are formed near two opposite sides of the body of the retainer 10 and are approximately the same height above the body of the retainer 10 as the flap 13. When engaged through the slot in the body of the retainer 10, the feet 16, 16a of the fastener 12 are engaged beneath the flap 13 and hold the fastener 12 rigidly in position. The assembly is used with a socket comprising a plate 19 having legs 20, 20a which project through the aperture in the panel 18 and pass through slots in a domed member 21, the ends of the legs 20, 20a being clenched outwardly and against the member 21. A circular hole 22 is provided in the plate 19 through which the fastener 12 engages, the edges of the hole being bent downwards into the aperture.
Patent GB-220212-A (GB)
Title: Improvements in the manufacture and production of green vat dyestuffs
IPC: C09B3/30
Filed: 1923-12-03
Abstract: Nitrodibenzanthrone is purified by dissolving it in concentrated sulphuric acid and fractionally precipitating by addition of suitable diluents, such as dilute sulphuric acid, water, or acetic acid.  The product dyes cotton blue shades from a hydrosulphite vat, becoming clear green on exposure to air, and violet-grey to violet-black on treatment with hypochlorite.  The nitrodibenzanthrone used may be prepared by nitrating either crude or pure dibenzanthrone.  The purified product heated to 180 DEG  C. with aluminium chloride in nitrobenzene gives a product dyeing green shades, which become black on treatment with hypochlorite.  Specifications 1818/05 and 12817/13 are referred to.
Patent GB-161621-A (GB)
Title: Method of and apparatus for adherently uniting webs of fabric
IPC: D03J1/00
Filed: 1919-12-04
Abstract: 161,621. Kaufmann, F. J., and Marsden, W. N. Dec. 4, 1919. Combining sheet material.-In an apparatus for uniting two webs of fabric by adhesive, the webs are passed between rolls and a jet of powdered adhesive and a fine spray of liquid are introduced into the space between the webs as they approach the rolls. The webs 8 and 9 pass from rollers 14 provided with braking-straps 13, the tension of which is regulated by springs 15 and screws and nuts, over rollers 18, 19 to the pressure rollers 3, 4. In order to stretch the webs laterally, the rollers 18, 19 are formed with screw threads, the thread on one half of each roller being of opposite pitch to the thread on the other half. Powdered adhesive and liquid spray are blown into the space between the webs from a powder distributor 45 and a spraying device 49. The powder-spraying device consists of a hopper 41, Fig. 3, pivoted on a vertical axis and provided with a nozzle 46 and means for introducing an air-blast for blowing the powder through the nozzle. The spraying device consists of a member capable of moving about a vertical axis and dipping into a water vessel 47. Compressed air enters through passages 50, 52, 55 and sucks up water through a passage 53 and blows it out as spray through an orifice 54. The powderblowing and spray devices are oscillated through a reciprocating rack 48 engaging with toothed segments on the hopper 41 and spraying devices 9. 'The rack is operated from a crank through a lostmotion arrangement, so that the two devices are stationary for a short time at each end of the stroke. The crank is driven through a clutch device connected to the air supply valve, so that when the air is shut off the clutch is disconnected. From the rolls 3, 4 the united webs pass to a drying drum 23 against which they are held by the weight of a roll 24 mounted in pivoted arms. A drying fan 27 is also provided. The webs pass from the drum 23 between grooved rolls 30 which break up hardened spots and smoothing rolls 31, and are wound on a roll 32 driven by ratchet gear.
Patent GB-676763-A (GB)
Title: Preparation of freeze-stable polyvinyl acetate emulsion compositions
IPC: C08F2/22
Filed: 1947-11-15
Abstract: A coating composition comprises a stable aqueous polyvinyl acetate emulsion made by emulsion polymerization and containing from 30 to 65 per cent of polyvinyl acetate having an average particle size of from 0.5 to 5 microns, a plasticizer in an amount between 5 and 50 per cent of the polyvinyl acetate, a surface active agent in an amount between 20 and 75 per cent of the plasticizer and from 0.3 to 6 per cent of the emulsion of a hydrophilic colloidal emulsifying agent. The composition may also contain a pigment in an amount of from 25 to 70 per cent by volume of the total non-volatile ingredients and a keying agent, i.e. an agent which has the ability of adhering to old oil-paint, in an amount of from 5 to 25 per cent of the polyvinyl acetate. Specified emulsifying agents are gum tragacanth, gum arabic and partially hydrolysed polyvinyl acetate.  Specified plasticizers are dibutyl phthalate, butyl phthalyl butyl glycollate, diethylene glycol di-2-ethylbutyrate, dibutyl sebacate, polyethylene glycol di-2-ethylhexoate, and tricresyl phosphate.  Specified surface active agents are the oleic acid condensate of polyethylene oxide, di-n-octyl sodium sulphosuccinate, dodecyl dimethyl hydroxyethyl ammonium chloride, and a polyoxyalkylene derivative of sorbitan monolaurate.  Specified pigments are titanium dioxide, bone black, Venetian red, Tuscan red, mineral black, iron oxide, lithopone, zinc sulphides, and mixed pigments, e.g. barium-titanium, calcium-titanium, magnesium-titanium.  Keying agents mentioned are drying or non-drying alkyd resins, e.g. linseed fatty acid-modified phthalic anhydride alkyd resins, a mixture of a drying oil such as linseed oil and paint softener such as acetone oil, or resins such as polyterpene hydrocarbon resins, soft cumarone-indene resins, and pentaerythritolrosin ester gum.  The compositions may also include fillers such as calcium carbonate, mica, china clay, and diatomaceous earth.  The emulsions may be made by the processes described in Specifications 466,173, 568,884, 568,886, 574,863, 577,861, 615,723 and 657,545.
Patent GB-1452652-A (GB)
Title: Furnaces
IPC: B22F3/00
Filed: 1974-07-09
Abstract: 1452652 Muffle furnaces FHD FURNACES Ltd 9 May 1975 [9 July 1974] 30420/74 Heading F4B A furnace for treating materials in continuous movement comprises an elongated gastight chamber and a hearth 6 over which passes a conveyor 7 for the materials to be treated, the conveyor being covered with a longitudinal refractory hood 11 which encloses a treatment zone, the heating means being outside the treatment zone. The refractory material has a high thermal conductivity and is inert to cracked ammonia and to endothermic and exothermic atmospheres. The refractory used is silicon-nitride-bonded silicon carbide and the hood is formed in sections joined together 'end-to-end'. The atmosphere of the treatment zone may be supplied through ducts 13 formed in the hood sections, or  through a pipe housed in recesses in the hood sections. At the position between two different sections of the furnace, the section of the hood is formed with a depending ridge forming a radiation barrier (Fig. 4c, not shown).
Patent GB-684443-A (GB)
Title: Improvements in the manufacture of capacitors
Inventor: GROUSE RICHARD ALFRED
IPC: H01G13/00
Filed: 1950-12-13
Abstract: 684,443. Making electric condensers; soldering. HUNT, Ltd., A. H. Sept. 10, 1951 [Dec. 13, 1950], No. 30447/50. Classes 83 (ii) and 83 (iv). [Also in Group XXXVI] Strip dielectric is thinly metallized on one face, so that one edge is left bare, and is assembled into a multilayer assembly in which in successive layers the metallization extends up to alternate edges, the assembly being cut into sections to form separate condensers. As shown in Fig. 1, two strips of paper 11, 19 are wound on a wheel 18, one strip having an edge free of metallization opposite to that of the other edge. After winding as required, the wheel rim 17 is removed, copper is deposited through a mask on areas 26, Fig. 2, leads soldered to the copper, and the annulus cut into sections by a saw 32 maintained at a potential high enough to burn back the metallized layers a sufficient distance to prevent subsequent short-circuiting. Vacuum drying and impregnation with the materials known under the Registered Trade Marks " Marco (SB-28C) " and " Araldite (Resin B) '' preferably takes place before cutting. The processes of testing, printing and ejection into accept and reject bins may be carried out while the condensers are still on the forming ring 17. If desired, the annulus may be subjected to a flash test and its total capacity measured before division into small condensers. One or more unmetallized strips of dielectric may be wound between the metallized strips.
Patent GB-1275749-A (GB)
Title: Electrical circuits for controlling a current through a load
Inventor: FINNIMORE BENJAMIN KEITH
IPC: H05B39/08
Filed: 1968-06-26
Abstract: 1275749 Switching circuits for consuming devices B K FINNIMORE 26 June 1969 [26 June 1968] 30488/68 Heading H2H The current in a load is controlled by varying the firing angle of a controllable rectifier in dependence or the state of charge of two capacitors. In the circuit of Fig. 1, closure of a switch 13 initiates a slow build-up of charge on a capacitor 18. A transistor 21 becomes conductive and another capacitor 23 charges rapidly until a voltage sufficient to trigger the thyristor 14 is reached. The load 10 now draws a greatly increased current for the remainder of the halfcycle, a too rapid rise in current being prevented by a filter circuit 26, 27. In a subsequent halfcycle, the charge on the capacitor 18 will be higher, so that current can flow more rapidly into the capacitor 23 and the load will be fully energized for a greater part of the half-cycle. Hence, the average current in the load, which may be a lamp, builds up gradually to a maximum when the capacitor 18 is fully charged. The resistor 19 may be varied to change the rate of increase. A shorting switch may be connected across the capacitor 18 to allow the lamp to be dimmed. In modifications, the thyristor 14 may be replaced by a pair of anti-parallel thyristors or by a triac triggered by a diac.
Patent GB-668220-A (GB)
Title: Improvements in or relating to sliding doors and the like
Inventor: PERNETTA CHARLES
IPC: E05D15/06
Filed: 1949-11-29
Abstract: 668,220. Sliding doors. BECKETT, LAYCOCK & WILKINSON, Ltd. Nov. 28,1950. [Nov. 29, 1949] No. 30577/49. Class 20(iii). The lower guide for a sliding door 11 of the type in which the full weight of the door is carried by an upper runner, comprises a guide member 14 which is fixed along the lower edge of the door and extends into a groove 13 formed in the floor 12, guide rollers 15, 16 being arranged in pairs on vertical axes 31 at each side of the groove 13 to resiliently engage the sides of the guide member 14. Each pair of rollers is mounted in a frame 17 having flanges 23 for attachment to the floor. A resilient connection between the rollers and the guide member 14 may be effected by forming the guide member of two resilient plates so that the spaced apart ends 25, 26 converge slightly as the guide enters between two rollers, or by adding resilient facing layers to each side of the member 14 where it engages the rollers, or by covering an inner resilient central layer of material with a thin metal facing, or by providing the rollers with resilient tyres. The ends of the guide members are rounded or tapered and provided with protective metal caps. In an alternative construction the brackets 17 are located in recesses provided in the upper surface of the floor.
Patent GB-1093990-A (GB)
Title: Tv-monitored method and machine for taking a sample from the wall of a conduit
Inventor: CHARLADE JEAN
IPC: G21C17/02
Filed: 1966-07-08
Abstract: 1,093,990. Trepanning machine. COMMISSARIAT A L'ENERGIE ATOMIQUE. July 8, 1966 [July 22, 1965], No. 30879/66. Heading B3C. [Also in Division G6] A machine for removing a graphite sample from a reactor comprises a trepanning tool 5 Figs. 1 and 6 rotated by a motor 8, a pneumatic sac 11, which when filled with air feeds the tool, and a T.V. camera 12, and receiver 17, for monitoring the sampling operation. The machine frame comprises parts 1 and 2 pivotally connected at 0, the tool and its driving motor being mounted on part 1 and the T.V. camera and a ring of lamps 13 being'mounted on part 2, which has a string of non rotary rods 14 secured thereto. A panel 16 is situated outside the square or circular cross sectioned conduit 3 and comprises a pressure reducer for adjustment of the air pressure in Sac 11, and a rheostat or control valve for controlling the variable speed electric motor or pneumatic motor 8. In operation the machine is inserted into passage 3 by rods 14 which latter are graduated so as to determine the position of the tool. Motor 8 is started, and sac 11 is inflated, and an annulus is drilled into wall 4. Motor 8 is stopped, rods 14 are pulled, and the sample snaps off and falls into a recess 7 in the tool. The machine is then removed from passage 3. If motor 8 is a pneumatic motor the exhaust is channelled so as to cool the tool. If the motor is an electric motor the cutter is cooled by injecting gas.
Patent GB-864448-A (GB)
Title: Motor overload protection system
IPC: H02H7/085
Filed: 1959-09-10
Abstract: 864,448. Protective arrangements for electric motors. STUBNITZ-GREENE CORPORATION. Sept. 10, 1959 [Sept. 26, 1958], No. 30905/59. Class 35. An electric motor is provided with a temperature-sensitive capsule 27 embedded in its windings and a thermal-image overload device 20 outside the machine in which the bi-metallic strip carries the load current, so as to make allowance for both the temperature of the motor windings and the load current. The element 27 is normally open, but at a predetermined winding temperature, it closes the circuit of a heater 35 which in turn causes the normally closed motor-current switch 20 to open. The switch 20 has a snap-action spring 25.