baber/WOPTO huggingface dataset:
Patent GB-1090440-A (GB)
Title: Method of and apparatus for preparing samples for x-ray analysis
IPC: G01T7/02
Filed: 1965-11-01
Abstract: 1,090,440. Rotary table compression moulding machine. APPLIED RESEARCH LABORATORIES Inc. Nov. 1, 1965 [Nov. 19, 1964], No. 28159/67. Divided out of 1,090,439. Heading B5A. A rotary table compression moulding machine, particularly for making briquettes for subsequent X-ray analysis, comprises an intermittently rotating hub 40 carrying radial arms 44-49 each of which is provided with a through bore 50. Each arm carries upper and lower pressing pistons, 52 and 54 which are pivoted to the outer ends of levers 56 and 58, the levers themselves being centrally pivoted about rollers 98 mounted upon the arm. The levers are moved along the arm, to bring the pistons into a position overlying the bore, by cam actuated rods 61 and 62 connected to rollers 98, and are pivoted, to insert the pistons into the bore, by means of second, cam actuated rods 62 and 64 connected to the inner ends of the levers. In operation, starting from a position in which the upper piston is radially retracted and the lower piston is located in the bore, each arm is first indexed to a station B, where the bore is filled by a hopper 76, and then to a station D, during which time the upper piston is forwarded and pivoted into the bore to effect a preliminary compression. At station D, the pistons are engaged between upper and lower press jaws to fully compress the material, after which the lower piston is lowered and radially retracted, the upper piston is lowered to push the formed briquette from the bore, and the arm is indexed to a last station F. At station F the lower piston is forwarded to knock the briquette off the lower end of the upper piston on to a take-off device such as conveyer 74.
Patent GB-938330-A (GB)
Title: Electrical heating cable
Inventor: BRUCE HENRY HOPE
IPC: H05B3/56
Filed: 1959-08-18
Abstract: 938,330. Cables. G. N. HADEN & SONS Ltd., and ROSSER & RUSSELL Ltd. Nov. 14, 1960 [Aug. 18, 1959], No. 28184/59. Class 36. [Also in Group XI] A heating cable is formed by coiling a wire 1 into an open helix around which is then extruded an insulating sheath, preferably of butyl rubber. It is stated that with a spiral of <SP>3</SP>/ 16  inch diameter, the butyl rubber will penetrate between the turns as shown, but wil allow the wire to be pulled out into a helix of large pitch at terminating points, so as to reduce the heating effect at these points.
Patent GB-903683-A (GB)
Title: Process for the preparation of unsaturated dicarboxylic acids
IPC: C07C51/34
Filed: 1960-08-16
Abstract: The invention comprises 4,8-dodecadiene-1,12-dioic acid and its alkali and alkaline earth metal salts and a process for the preparation of unsaturated a , o -dicarboxylic acids by adding a heavy metal oxide to a mono ozonolysis product of cyclic, non-conjugated polyolefin, adding an inorganic base after initiation of the oxidation reaction to establish basic conditions and converting the resulting salt into the desired acid.  The polyolefin may be for example a cyclohexadiene, cycloheptadiene, cyclooctadiene or cyclododecatriene and the polyolefin ozonolysis may be carried out in an organic solvent using 0.30 to 0.1 mols of ozone per mol equivalent of double bonds in the polyolefin so that only one of the double bonds is converted to an ozonide.  In an example 1,5,9-cyclododecatriene is mono ozonised in a mixture of dichloromethane and ethanol, the mono-ozonide recovered and dissolved in methanol.  To this solution is added a suspension of silver oxide and when the oxidation has commenced aqueous sodium hydroxide is added dropwise.  The resulting 4,8-dodecadiene-1,12,dioic acid sodium salt is recovered and acidified.  The unsaturated acid may be brominated or ozonised and oxidised to succinic acid.
Patent GB-1518429-A (GB)
Title: Sequence controllers
IPC: F24F11/02
Filed: 1976-07-08
Abstract: 1518429 Automatic control BARBERCOLMAN CO 8 July 1976 [14 July 1975]  28438/76 Heading G3N In a sequence controller, an input signal, representative of a deviation of a measured temperature from a set value, is compared with a designated upper or lower reference from a device 30 in a comparator 20. The binary output of the comparator in dependence on the designated reference sets a shift register sequencer 40 to count up or down, a pulse from a clock 60. The stages of the register sequentially increment, or decrement, load controllers 50A-50N. An inhibitor is enabled when the value of the input signal is between the upper and lower references to prevent clockpulses being fed to the shift register 40 and thereby produce a "dead-band". The outputs of the shift register are also applied to the reference device 30 to apply an anticipating feedback to the references, while maintaining a fixed dead-band.
Patent GB-1413365-A (GB)
Title: Apparatus for permitting observation in the region of the  post-rhinal-pharyngeal cavity
IPC: A61B1/24
Filed: 1973-06-15
Abstract: 1413365 Surgical optical instruments SPITALUL COLTEA 15 June 1973 28502/73 Heading A5R [Also in Division G2]  An endoscope comprises a mirror A rotatably supported on a supporting device B which is itself rotatable about the optical axis of an ocular means or microscope F and located within a speculum D, means being provided for directing warm air onto the mirror to prevent misting thereof. A retaining device G for engaging the patient's uvula and soft palate comprises a curved plate 36 which is extended by a slide bar slidable in a guide 37 carrying an outer hinged curved plate 40, the plates 36, 40 being adjusted by a catch r which co-operates with teeth g on the slide bar. The mirror is carried by tubular arms 6 one of which is connected at 23 to a source of compressed air, the arms being connected to a channel a in the mirror frame I which is provided with air outlet channels b. The mirror is adjusted by connecting rod 16 moved by means of knob 10.
Patent GB-1412633-A (GB)
Title: Capacitor with rupture guard
IPC: H01G2/14
Filed: 1974-06-27
Abstract: 1412633 Capacitors INTERNATIONAL STANDARD ELECTRIC CORP 27 June 1974 [29 June 1973] 28514/74 Heading H1M Piston 2 moves outwardly when excess pressure develops within capacitor casing 1 to replace at least one of leads 10, 11 and disconnect capacitor 8, the piston having an extension, as shown stem 6, for locating it in the casing so as to prevent undesired movement such as tilting. As shown the leads are embedded in the piston and its stem. Cast resin 3 forms a seal between the piston and casing wall, the latter having been lubricated to prevent adhesion. Bead 9 prevents spread of resin 3 or alternatively at least the upper side of the piston is convex (Figs. 2, 3, not shown). The capacitor may be oil impregnated.
Patent GB-244252-A (GB)
Title: Improvements in soles, heels and protectors for boots, shoes and other footwear
IPC: A43C13/04
Filed: 1924-11-28
Abstract: 244,252. Hanwell, C. H. Nov. 28, 1924. Protectors, construction of.-A method of incorporating metal resilient members into creperubber soles, heels, and protectors for footwear consists in heating the metal member and incorporating it with the crepe rubber by a. screwing movement or by pressure. Metal springs 2, Fig. 3, are heated well below red heat so as to soften without overheating the rubber and are then inserted by a screwing movement into the sole on the finished boot. On cooling, the crepe rubber adheres to the spring. The outer ends 3, Fig. 2, of the springs are level with or project slightly from the sole. Instead of springs, various V-shapad pieces of wire or strip metal may be incorporated with the sole or heel, either with the open end of the V on the tread or reversed. In other cases, resilient members may take the form of a series of serrations the axes of which are parallel with the tread. Protectors either in the form of a complete sole or heel, or isolated protectors, may be formed in a similar manner and be secured by adhesive, or isolated protectors may be recessed in soles or heels.
Patent GB-877890-A (GB)
Title: Improvements in the preparation of silica flour
Inventor: SEGROVE HERBERT DAYMOND
IPC: C01B33/113
Filed: 1958-09-05
Abstract: Silica flour having a whiteness rating of at least 90, as defined, is derived from a mineral silica which on washing and grinding to silica flour by known means has a whiteness rating of less than 85, by comminuting the mineral silica in the absence of surfaces, such as ferrous surfaces, which would provide coloured contaminants in the silica flour, to a size such that 100% will pass a 120 B.S. screen, and heating the comminuted mineral in the presence of 1 to 5% of an oxide, hydroxide, carbonate, or bicarbonate of an alkali or alkaline earth metal to between 1000 and 1700 DEG C. for 10 mins. to 1 hr. Heating may be effected before, or after grinding, and the added compound may be sodium, or potassium, carbonate, or lithium, barium, or calcium hydroxide. The mineral silica may be sand, or sandstone, and may be comminuted in a silica lined mill with silica pebbles. The added compound may be admixed as a solution, or as a finely divided solid.
Patent GB-319336-A (GB)
Title: Improvements in or relating to oscillation generating and modulating systems
IPC: H03C3/24
Filed: 1929-03-25
Abstract: 319,336. Marconi's Wireless Telegraph Co., Ltd., (Assignees of Hansell, C. W.). March 23, 1928, [Convention date]. Divided on 308,663. Vacuum apparatus, arrangements of. - Frequency modulation is effected by means of a valve generator which oscillates at a frequenuy determined by the time period of charge and discharge of a condenser, as distinct from the use of resonant circuits. The discharge period is in turn controlled by the current passed by a modulating valve. The high-tension supply to the plate of the oscillator valve 101 passes from a source 161 through the impedance of the modulating valve 301 and a coil 81. The condenser 201 is in parallel with the supply, and is consequently charged up. At a certain voltage the valve 101 becomes conductive, the corresponding valtage induced in the grid coil 121 emphasizing the discharge. As the discharge current decays, the valve 101 becomes non-conductive. In this way the transient charging and discharge currents " snap " the valve 101 into and out of operation. Modulating current is applied from the microphone 30 or from multiplexing keys 66.
Patent GB-656863-A (GB)
Title: Process of producing the sodium or calcium salt of penicillin
IPC: C07D499/16
Filed: 1948-11-04
Abstract: Sodium or calcium penicillin is obtained by treating a solution of potassium penicillin with a solution of a sodium or calcium salt soluble in the solvent in question of an acid whose potassium salt is sparingly soluble in the solvent employed; the potassium salt which separates is then removed.  Suitable solvents are water, methanol and ethanol, and sodium or calcium perchlorate may be used to precipitate the potassium.  If the sodium or calcium penicillin is required in the solid state, the solvent (e.g. methanol), is distilled or evaporated in vacuo until the salt precipitates or crystallizes.  A further solvent (in which sodium or calcium penicillin is less soluble than in methanol), may be added before or after the evaporation to help crystallization.  If added before evaporation, this solvent should be less volatile than methanol.  Suitable solvents are alcohols, esters and ethers, e.g. the propanols and butanols, ethyl and butyl acetates, di-ethyl, di-isopropyl and di-isoamyl ethers and dioxane. Examples are given of the process carried out in methanol, using butanol and diethyl ether as auxiliary solvents.
Patent GB-849931-A (GB)
Title: Improvements in or relating to the manufacture of polyurethane foams
Inventor: JAMIN GUILLAUME WARD
IPC: B29C44/38
Filed: 1957-09-11
Abstract: In making cellular polyurethane products the reactants are injected into a mixing chamber, at least one reactant being fed to the chamber by a discontinuous pump, the flow of the reactants being made more continuous by including in the feed line from the pump to the chamber a pulsation eliminator in the form of an enclosed chamber communicating at its lowest point with the feed line.  Specifications 769,680, 769,682, and 839,183 are referred to.ALSO:In making cellular polyurethane products the reactants are injected into a mixing chamber, at least one reactant being fed to the chamber by a discontinuous pump, the flow of the reactants being made more continuous by including in the feed line from the pump to the chamber a pulsation eliminator in the form of an enclosed chamber communicating at its lowest point with the feed line.  Specifications 769,680, 769,682 and 839,183 are referred to.
Patent GB-427404-A (GB)
Title: Improved method and apparatus for silencing exhaust gases
IPC: F01N1/18
Filed: 1933-10-17
Abstract: 427,404. Exhaust - silencers. UPWARD, A. R., 28, Holland Road, Kensington, London. Oct. 17, 1933, No. 28700. [Class 7 (ii)] A silencer for the exhaust of internal-combustion and other engines comprises one or more pairs of rotating vane wheels placed side by side with the edges of the vanes just clearing one another, and the gases impinging on a pair midway between them. The Figure shows two pairs of vane wheels a, b arranged in a casing c having an inlet h and exit i for the gases. Baffles d .. g are arranged as shown between the two pairs to prevent the formation of vortices. The casing may be provided with a valve-controlled relief outlet. A pair of vane wheels may be geared together.
Patent GB-981625-A (GB)
Title: Improved television and film studio lamp
Inventor: JOHNSON SAMUEL LEWIS
IPC: F21S8/00
Filed: 1962-07-26
Abstract: 981,625. Lamps. MOLE-RICHARDSON (ENGLAND) Ltd. Oct. 24, 1963 [July 26, 1962; May 8, 19631, Nos. 28721/62 and 18239/63. Heading F4R. A lamp adapted to be used selectively either as a flood lamp or as a spot lamp comprises a bowl reflector 1, Fig. 1, for providing flood illumination and a lens 14 for focusing the spot, the bowl and lens facing in different directions so that the light emerges in different directions with alternative use. Conversion from one use to the other is achieved by rotating a spherical mirror 13 mounted on a turntable 18, the mirror being placed adjacent the lens, as shown in full lines, when a flood lamp is required and adjacent a diffusing bowl 16, as shown in chain-dotted lines, when the light is to be passed through the lens. The mirror and the bulb 11 are mounted on slides 22 so that they can be moved together, by means of a rack and pinion 23, 24, to adjust the focus of the spot, and eyes 20, 25 engageable by a hooked long-arm 7 are connected to pinions 19, 23 for rotating the mirror 13 and adjusting the focus respectively. In an alternative embodiment, Figs. 3, 5 and 8, the bulb 11 and mirror 13 are fixed to a carriage 27 and a conical diffusing bowl 16 is carried by a bracket 32 mounted on a shaped plate 33 pivoted to the supporting platform 10 at 34. When the diffusing bowl is positioned as shown in Figs. 3 and 5 the lamp operates as a flood lamp. To convert it to a spotlamp the carriage 27 is moved to the right and a projection 36 on the carriage engaging a slot 35 in the plate 33 causes the latter to turn about its pivot 34. After the projection has left the slot the bowl is given its final rotation into the position shown in Fig. 8 by the engagement of a cam 42 (not shown) on the bottom of the carriage with a projection 41 on a link 37 pivoted at one end 38 to the plate 33 and slidable at its other end in a slot 40 in the platform 10. This link acts as a toggle to hold the bowl 16 in its displaced position. When it is again desired to use the lamp as a floodlamp the carriage is moved to the left, whereupon the projection 36 re-enters the slot 35 to restore the bowl to its original position.
Patent GB-533270-A (GB)
Title: Improvements in or relating to photographic shutters
IPC: G03B9/08
Filed: 1939-10-26
Abstract: 533,270. Photographic shutters. KODAK, Ltd. Oct. 26, 1939, No. 28727. Convention date, Oct. 26, 1938. [Class 98 (i)] A photographic shutter comprises a blade pivotally mounted on a pivoted oscillatable member, the blade upon release moving about the axis of this member and at the same time rotating about its own pivot to uncover and cover the exposure aperture. In the form shown, a two-lobed blade 24 is pivoted at 23 on a member 20 oscillatably mounted on a central upstanding flange 22 of the shutter casing. A hairpin spring 17 is attached to an arm 19 on the member 20 and to the trigger 5, which is pivoted at 12 and urged in a clockwise direction by a spring 13. Fig. 2 shows the parts towards the end of the operating stroke of the trigger. Slight further anti-clockwise movement of the trigger causes the ends of the spring 17 to snap over the dead-centre position in which they are shown, the spring then opening and swinging the member 20 to the position shown in Fig. 5. During this movement the blade 24 is caused to make a semi-rotation by means of a gear segment 25 secured to it and meshing with an internal fixed gear segment 26, thus uncovering and covering the exposure aperture. At the end of the return stroke of the trigger, effected by the spring 13, the spring 17 again snaps over, and the parts come to the position of rest as shown in Fig. 7, in which the exposure aperture is covered by a plate 14 forming part of the trigger 5. Time exposures are effected by turning a stop 33 so that it arrests the member 20 when the exposure aperture is uncovered.
Patent GB-1187329-A (GB)
Title: A Support for the Ignition Device of an Internal Combustion Rammer
IPC: F02B67/04
Filed: 1968-06-17
Abstract: 1,187,329. Ignition devices of internalcombustion rammers. DELMAG-VERWAL TUNGS, G.m.b.H. [trading as DELMAG-MASCHINENFABRIK REINHOLD DORNFELD] June 17, 1968 [June 27, 1967], No. 28809/68. Heading F1B. A support for the ignition device 16 of an internalcombustion rammer, by means of which at least the parts of the ignition device producing the ignition voltage are mounted, comprises at least one elastic bearing element 30 in which the ignition device parts 16, 36 are held by virtue of the shape of the bearing element, the bearing element being in turn retained by parts 22, 24 fixedly secured to the rammer (not shown) by virtue of the shape of elastic bearing element and the shape of the rammer parts retaining the element being complementary. The elastic bearing elements may have an approximately U-shaped or W-shaped crosssection.
Patent GB-654752-A (GB)
Title: Improvements in dielectric heating apparatus
IPC: H05B6/78
Filed: 1948-11-05
Abstract: 654,752. Dielectric heating. BRITISH THOMSON-HOUSTON CO., Ltd. Nov. 5, 1948. No. 28814. Convention date, Nov. 7, 1947..[Class 39(iii)] Objects to be heated are placed within a section of a hollow wave guide having an electromagnetic field maintained within it, the section being terminated by a closed hollow structure or structures simulating an infinite extension of the ends of the section, thereby effecting a substantially constant field strength throughout the length of the section. In one embodiment a wave guide section 23, fed by an oscillator 3a and loop 4, is closed at each end by structures 24 and 25 having metallic end walls 26 and 27 respectively. The structures have a width W<SP>1</SP> greater than the width W of the central section, and a length equal to an odd multiple of one quarter of the wave length within them. The width W is preferably made equal to one half of the free space wave length, or a multiple thereof, at the predetermined operating frequency. A continuous roll of paper 31 may be heat treated by passage through central slots 29 and 30. Alternatively, Fig. 6, a working section 34 is terminated by end structures 35 and 36 which interconnect a second operating section 37. Specifications 605,655 and 616,996, are referred to.
Patent GB-1431809-A (GB)
Title: Process for the production of a balanced viable and living culture of lactobacillus bulgaricus and streptococcus thermophilus
IPC: C12N1/20
Filed: 1973-06-18
Abstract: 1431809 Lactobacillus bulgaricus and streptococcus thermophilus MJOLKCENTRALEN ARLA EKONOMISK FORENING 18 June 1973 [16 June 1972] 28875/73 Heading C6F A process for producing a dried viable Lactobacillus bulgaricus and Streptococcus thermophilus culture in skim milk powder in the cell ratio 60:40% to 40:60% comprises adding cyanocobalamin to the nutrient substrate before starting cultivation of the micro-organisms. Lysinc and/or cystine may also be added. Preferably 0.5-5 mg cyanocobalamin, 50-500 g lysine and 10-1000 g cystine are used per 100 1 skim milk. The skim milk vehicle for the cultivated cells preferably has a solids content of 18-24 wt per cent. The product is dried at 70-85C.
Patent GB-671851-A (GB)
Title: Improvements in or relating to apparatus for viewing and photographing a cathode raytube screen
IPC: G01R13/20
Filed: 1949-11-10
Abstract: 671,851. Photographing and viewing cathoderay tube trace and separate graticule. CINEMATELEVISION, Ltd., and NUTTALL, T. C. Nov. 9, 1950 [Nov. 10, 1949], No. 28881/49. Class 98 (i). Apparatus for viewing and photographing a trace on a cathode-ray tube screen comprises a semi-reflecting mirror positioned at 45 degrees to the axis of the tube, a graticule disposed at the same distance from the mirror as the tube screen so that the mirror forms a virtual image of the graticule on the screen and viewing and photographing means at separate positions, at one of which light from the trace is transmitted and light from the graticule is reflected by the mirror, while at the other light from the graticule is transmitted and light from the trace is reflected by the mirror. As shown, a cathode-ray tube 2 and a transparent graticule-bearing screen 5, illuminated by a lamp 6 of adjustable brightness and curved similarly to the fluorescent screen of the tube, are arranged with their axes perpendicular and the images of the tube trace and the graticule are superimposed in register by a semi-transparent mirror 1, which is arranged at equal distances from the two screens and at 45 degrees to their axes and may be of equal transmitting and reflecting powers. The registered images may be viewed at 3 or photographed by the camera 4. Both the fluorescent and the graticule-bearing screens may be flat.
Patent GB-1387824-A (GB)
Title: Curtains
IPC: A47H23/08
Filed: 1971-06-19
Abstract: 1387824 Curtains J W BANFORD 31 May 1972 [19 June 1971] 28899/71 Heading A4S A curtain, particularly a shower curtain, comprises a sheet of cotton, nylon thread, sheet plastics material or glass fibre, which is hemmed at 11 by folding the upper edge over on itself twice and securing at 9 by stitching or heat welding, a series of reinforced apertures 12 being formed through the hem for engagement by a clip fastener 14 which is slidable along a rail 15. The apertures may be formed as an elongate slit by a hot blade in each layer of the hem, the layers being stitched or welded together round the aperture. Stitched apertures may be reinforced by extra stitching at the top of the aperture. In a modification a series of vertically spaced pairs of round holes are engaged by a ring clip, passing through each pair.