baber/WOPTO huggingface dataset:
Patent GB-969616-A (GB)
Title: Improvements in or relating to the manufacture of centrifugally cast pipes and the like
IPC: B22C13/10
Filed: 1960-09-29
Abstract: 969,616. Moulding-machines. A. E. CRAWLEY. Sept. 28, 1961 [Sept. 29, 1960], No. 33491/60. Heading B3F. Apparatus for forming a hollow sand mould in a tubular flask 11 comprises an internal former 19, a conveyer 19a, 23, 25 for delivering sand close to the former, a ramming head 30 for ramming sand around the former and against a flask end closure member 18, and means for moving the flask relatively to the former as the sand is built up and rammed around the former. The flask is mounted on a carriage 17 movable to and fro by a cable 55, and is also rotatable about its axis through gearing 15, 16, 50-53. The screw conveyer 25 is driven by a belt 27 and supported in the flask by radial arms 32. The ramming head 30 is carried by the conveyer casing 19a and actuated by compressed air. Specification 639,807 is referred to.
Patent GB-776684-A (GB)
Title: Improvements in or relating to transport means
IPC: B61B13/00
Filed: 1954-11-19
Abstract: 776,684. Portable railway systems. BELL, Ltd., O. H., and BELL, O. H. March 1, 1955 [Nov. 19, 1954], No. 33569/54. Class 104 (2). [Also in Groups X and XXXIV] A transport means comprising a track along which a number of balls or rollers are placed so that an object to be transported can be rolled over them while rolling them along the track has means to retain the balls or rollers yieldably at given stations therealong prior to engagement with the object so that the rollers in advance of the object will be engaged by it in such a way that transportation will occur without the balls or rollers fouling one another. The load 23 such as a glass-house, safe or the like is mounted on or attached to "T-", Fig. 2, or " V-", Fig. 10, shaped runners 4 or 24 which bear on two rows of balls 3 running in channel tracks 1 or 1a. The balls 3 are freely mounted in and held at suitably spaced intervals along the channel 1 by permanent magnets 6 carried by brass members 7 screwed into the vertical walls of the channel 1 or 1a. Should the balls 3, due to unevenness of the track, move out of contact with the runners 4 or 24, a flexible length of cable material 10, mounted on the bottom of the runners 4 or 24 and outwardly biased by torsion springs 14 or 27 engaging lugs 13 on the cables 10, bears against the balls 3 to move them along the channel track 1. In order that the runners 4 engage the balls 3 smoothly they are provided front and rear with prow-like pieces 8. The slightly tapered web 8b of the piece 8 is provided with recesses on each side in which are clamped by a " U-" shaped plate 16 ferrules 10a attached to the ends of the cables 10. Lengths of channel 1 are joined end-to-end by a stud 19 engaging a hole 20 and bolts passing through registering holes 21, 22. Steam or hot water pipes may be housed in the hollow of the " V "-shaped runners 24 when used with glass-houses. The Provisional Specification mentions that the tracks may be slightly inclined and that the balls may be held at spaced intervals along the track by upwardly bowed springs arranged on the horizontal portion of the track.
Patent GB-1492258-A (GB)
Title: Production of glucose isomerase
IPC: C12N9/92
Filed: 1974-07-30
Abstract: 1492258 Isomerization of glucose IMPERIAL CHEMICAL INDUSTRIES Ltd 4 July 1975 [30 July 1974 30 Dec 1974] 33578/74 Heading C2S [Also in Division C3] Glucose is isomerized to fructose using glucose isomerase on an enzyme preparation containing glucose isomerase which has been produced by continuously cultivating a glucose isomerase producing micro-organism in a culture medium comprising a source of assimilable carbon and inorganic nutrients under conditions suitable for production and continuously recovering the enzyme or enzyme preparation such that the concentration of a nutrient source in the culture medium is maintained at a level such as to be limiting to growth due to a deficiency of the growth limiting nutrient. Both glucose and xylose are mentioned as sources of assimilable carbon. Preferred glucose to fructose isomerization conditions are 20-90‹ C., pH 5-9 using a phosphate buffer.
Patent GB-1043015-A (GB)
Title: Method of manufacturing building structural and paving products using a calcium silicate hydrate bonding matrix
IPC: C04B28/18
Filed: 1964-08-18
Abstract: Cementitious building, structural and paving products are made in a process comprising shaping a mixture of calcareous material such as lime, hydrated lime, Portland cement or a mixture thereof, siliceous material such as ground sand, quartz, sandstone, soil, diatomite, clay, fly ash, mine tailings or furnace slag, and water, optionally with the addition of reinforcing material, subjecting the shapes to curing at superatmospheric pressure and a temperature at least 250 DEG  C. to form a calcium silicate hydrate coating on the siliceous material, and reducing the shapes to ambient temperature and atmospheric pressure, characterized in that the total curing period is less than 30 minutes.  A pressure of 1250 p.s.i. and a temperature of 300 DEG  C. may be used in the curing. Both forming and curing may be conducted in a heated hydraulic platen press or in an extrusion die, either sequentially or simultaneously. Reinforcing material may be asbestos, mineral wool, metal mesh, gauze, steel rods or fibres of silica, glass, silicon nitride, cellulose or synthetic organics. Sulphonated petroleum surfactants, hydrated starch or carboxymethyl cellulose plasticizers and calcium chloride or sodium hydroxide as accelerator may be included in the mix.
Patent GB-393502-A (GB)
Title: Improvements in or relating to hand stamps
IPC: B41K1/54
Filed: 1932-11-28
Abstract: 393,502. Hand-stamps; inking-pads. TIETZE, (nee FRIEDRICH), E., 15, Hauptstrasse, M÷lkau, Leipsic, Germany.) Nov. 28, 1932, No. 33694. Convention date, May 3. [Class 100 (ii).] A hand-stamp for dating &c., of the kind comprising endless type-bands passing over independently-operable pulleys, is provided with a frame in the form of a casing completely enclosing the pulleys and bands except for an opening for the printing-bar, and made in two halves symmetrical about the plane through the axis of the pulleys and the printing- bar, and having slots for the band-adjusting discs. The casing, Figs. 1 and 3, is pressed or cast in two halves from sheet-iron, papier mÔchÚ, celluloid, the material sold under Registered Trade Mark " Bakelite," or the like. The handle 8 is also in two halves integral with the halves of the casing and may be hollow and serves as a container, or may be made separate from the casing. The halves are united by a printing-bar 4 which fits into slots 15 in the halves, and by a pin 25 which passes through holes 18 in hinge-like portions 10. Each part is provided with a half socket 6 for the spindle 1, on which are mounted the dish-shaped pulleys 2 for the rubber bands 3. The pulleys 2 are drawn from sheet-iron with an inwardly-turned bearing-surface about the spindle and a cylindrical outer surface 16 which is ribbed to give a better grip on the bands. The broader pulleys are provided with a second bearing- surface in an end-cover 17 inserted in the pulley. Slots 13 are provided in the casing for adjusting discs 14 fast to the pulleys. An inking-device comprises a pad 24 in a base 19 and a spring-pressed sliding frame 23. The frame 23 receives the end of the stamp when not in use, and must be depressed together with the stamp to allow contact between the stamp and the inking-pad.
Patent GB-446004-A (GB)
Title: Improvements in or relating to a starting unloader for multi-stage air compressors
IPC: F04B25/00
Filed: 1935-12-05
Abstract: 446,004. Regulating compression. INGERSOLL-RAND CO., 15, Exchange Place, Jersey City, New Jersey, U.S.A. Dec. 5, 1935, No. 33744. Convention date, Nov. 11. [Class 8 (i)] The intercooler of a stage compressor communicates with a passage 33 leading to a chamber having an outlet 38 to atmosphere &c., and the end of this passage is controlled by a diaphragm-actuated valve 44 which is closed during normal working by pressure from a higher compression stage acting on the diaphragm through a conduit 51. This conduit has a branch leading to a valve cage 67 in which a valve 69 is held open at rest or at low speeds by a projection from a spring-pressed piston 70 in the end of the drive shaft. At higher speeds centrifugal weights 73 retract the piston and the valve closes. The high pressure air in the conduit 51 then passes through a casing 55 containing passages connected by a discharge valve 60 to the underside of the diaphragm ; an adjustable leak valve 65 in the casing 55 relieves the conduit 51 and the diaphragm of pressure when the valve 69 opens during rest intervals.
Patent GB-984116-A (GB)
Title: Improvements relating to the stators of dynamo-electric machines
Inventor: HALLETT LOUIS BERTRAM HENRY
IPC: H02K5/128
Filed: 1962-09-03
Abstract: 984,116. Electric motors. SUMO PUMPS Ltd. Aug. 15, 1963 [Sept. 3, 1962], No. 33745/62. Heading H2A. A stator of a dynamo-electric machine, e.g. a sealed submersible pump motor, comprises a pack, of laminations 1 having on its outside a longitudinal groove 4a in which is located a strip 8, a thin longitudinally split tubular shell 5 placed over the pack with its gap 6 positioned at the groove and strip, a longitudinal weld 9 along the gap, and end spigots 3 embracing the stator windings 12. The strip 8 keys and protects the structure from the welding and the invention enables the thin shell to provide a rigid stator. The winding enclosure is completed by casing end parts 13 and supporting tubes 14 which may also support a thin sealing tube, not shown, inside the stator. The vertically used submersible motor/pump unit in Fig. 4 has a thrust bearing 16 at its lower end. The stator end laminations may be insulating.
Patent GB-513053-A (GB)
Title: Gas fires and like heat radiating appliances
IPC: F24C1/08
Filed: 1937-12-07
Abstract: 513,053. Gaseous-fuel furnaces. HELPS, G. Dec. 7, 1937, Nos. 33782/37, 29618/38, 35468/38 and 37119/38. [Class 51 (i)] [Also in Group XI] A gas fired combustion chamber 2 for heating steam or water boilers is bounded on one side by a firebrick back and on the outlet side by a radiant composed of a grid-like structure or of closely spaced parallel radiant elements 26 formed of fireclay or other refractory material. A burner or burners discharging combustion products into the chamber first heats the combustion chamber back and the products pass through restricted openings in the grid or between the elements. The elements 26 may be of circular, elliptical, square, wedge, trapezoidal or other section and may be provided with ribs or projections. Specifications 413,798, 431,676 and 505,990, [all in Group XI], are referred to.
Patent GB-282396-A (GB)
Title: Improvements in and relating to locomotives
IPC: B61C9/08
Filed: 1927-12-14
Abstract: 282,396. Rasmussen, K. Dec 15, 1926, [Convention date]. Railway locomotives, internalcombustion engine and compressed air driving-gear of crank-type, coupling-rods, and like mechanism.-Comprises a locomotive having two sets of driving gear, one set driven by an internal-combustion engine or other prime mover being used to drive the locomotive at normal and higher speeds, while the other set is used for starting and low speeds and is driven by a fluid-pressure or other suitable engine which may derive its power from a compressor driven by the aforesaid prime mover. In the construction shown in Figs. 2 and 6, an engine 12 drives wheels 6 which for normal running rest on and drive the rail wheels 1. The axles 4, 8 of the wheels 1, 6 slide in guides in a frame 42 and are controlled by eccentrics 22, 44 on shafts 19, 20, 21, so that when these shafts are simultaneously turned through 180‹ by a power cylinder and gearing (not shown) the wheels 6 can be moved from the position shown in Fig. 2 to that shown in Fig. 6, and vice versa. When the wheels 6 are clear of the wheels 1 the latter can be driven by cylinders 16 supplied with compressed air by compressor cylinders 15 operated by rods 38 from the engine 12. In the construction shown in Figs. 12 and 13, the main driving wheels 138 are driven by a Diesel engine 112 through crankshafts 113, jack-shafts 157 and coupling rods 164, and the auxiliary wheels 141 are coupled by rods 169 and can be driven by cylinders 116 supplied with air from a compressor (not shown) driven by the engine 112. The wheels 138, 141 are alternately raised and lowered from the track by means of eccentrics on shafts 146. 170 geared together. The weight on the trailing wheels 144 may simultaneously be adjusted by means of eccentrics 181. In a modification the main driving wheels only are raised and lowered from the track, the auxiliary wheels being always in running position.
Patent GB-1386749-A (GB)
Title: Film speed enhancement camera
IPC: G03B17/12
Filed: 1973-07-17
Abstract: 1386749 Enhancing film speed C & C RESEARCH Inc 17 July 1973 [17 July 1972]  33979/73 Heading G2A A camera has means for subjecting the film to non-image light from a source within the camera simultaneously with its exposure to image light from the subject. The term "light" includes other electromagnetic radiation which would provide the desired film excitation. The camera shown is of the type having a focal plane shutter 12 with an exposure slit which passes across the film 14. Behind the lens 13 is an annular array of small incandescent light bulbs 21, energized from a power supply 23 by a switch 24. The bulbs are energized just before exposure, which creates a low light level which does not, however, affect the film since the shutter is still closed. When the shutter is opened to effect an exposure, the light from the subject impinges on the film together with the additional non-image light. This latter is just below the threshold level of the film, so that in effect the speed of the film is increased, and an image is produced by a quantity of light which, without the non-image light, would have been insufficient to produce an image. Instead of the arrangement of bulbs 21, the light may be conveyed to the film by other means, such as an arrangement of light fibres Figs. 4 and 5 (not shown). If the camera has a between-lens shutter, then a further shutter must be provided, or the shutter synchronized with the light source.
Patent GB-1078508-A (GB)
Title: Improvements in or relating to magnetrons
Inventor: COOPER BRIAN FREDERICK
IPC: H01J23/213
Filed: 1965-08-09
Abstract: 1,078,508. Magnetrons. ENGLISH ELECTRIC VALVE CO. Ltd. March 11, 1966 [Aug. 9, 1965], No. 33991/65. Heading H1D. Each strap of a strapped magnetron includes a plurality of discrete surfaces, e.g. teeth, which co-operate to provide a plurality of inter-strap capacitances distributed along the strap lengths, a rotor having a plurality of discrete conductive parts being arranged such that, upon rotation, the parts in turn traverse the dielectric spaces of the capacitances, thereby permitting a high rate of cyclic frequency tuning. In one embodiment the straps (6, 8, Fig. 1, not shown), are connected to a pair of spaced discs (7, 9) lying in planes perpendicular to the magnetron axis, and having axially projecting teeth (10, 11), the rotor (12) lying between the two discs and having a corresponding set of teeth (13) projecting from each face. In another embodiment (Figs. 2, 3 and 4, not shown), the straps (17, 19) extend axially and have radially projecting teeth (10<SP>1</SP>, 11<SP>1</SP>), the end of a cylindrical rotor (112) having a circumferential array of axial slot apertures (13<SP>1</SP>) projecting between the two straps. The rotor may be rotated magnetically, and the opposite end of the anode block may be provided with a normal strap system.
Patent GB-1470591-A (GB)
Title: Strain gauges
IPC: G01B7/16
Filed: 1975-09-02
Abstract: 1470591 Capacitive strain gauges CENTRAL ELECTRICITY GENERATING BOARD 2 Sept 1975 [1 Aug 1974] 34029/74 Heading G1N(A) [ Also in Division H1] A capacitance strain gauge comprises electrode assemblies 13, 14 in which platinum electrodes 17 and platinum base-plates 18 are secured to opposite faces of alumina plates 16 by a fired thermo-setting glass-based material. The base-plates are secured to the flexible elements 10, 11 of stainless steel or nickel alloy by spot welding. Respective feet 12 are secured together and welded to the surface to be measured. The glass-based material may comprise borosilicate glass with alumina powder or a recrystallizable or devitrifying glass containing nucleating atoms. In making the assemblies the platinum surface is roughened and glazed with the glass-based material. A thin layer of the same material is placed between the glazed surface and the alumina plate and the assembly heated to 900-950‹C. The strain gauge is said to be usable at temperatures up to 1000‹C.
Patent GB-927898-A (GB)
Title: Photographic objective
IPC: G02B13/00
Filed: 1959-10-08
Abstract: 927,898. Photographic objectives. CARL ZEISSSTIFTUNG, [trading as C. ZEISS Firm of]]. Oct. 8, 1959 [Oct. 10, 1958], No. 34206/59. Class 97 (1). A photographic objective for taking or reproduction consists of six lenses of which the first and the second each have collective refractive power, the third and the fourth each have dispersive power and the fifth and the sixth each have collective refractive power, the second lens and third lens being cemented to each other and all surfaces having a radius of curvature smaller than the equivalent focal length of the objective being concave towards a diaphragm placed between the third lens and the fourth lens, is characterized in that the following conditions are simultaneously satisfied: 1. 0.50.f < D s  < 0,60.f 2. 1,20.rs < D s  < 1,65.#r s  3. 0,35.f < #r s  < 0,45. f 4. 0,22.f < D z  < 0,33.f 5. 0,90.r z  < D z  < 1,10.r 2  6. 0,22. f < #r z  < 0,33. f 7. 0,70. f < B < 0,80.f 8. 3,30 < n III +n v  < 2.n IV  9. 1,80.#r z  < D 8  < 2,2.#r z  10. 1,00.r 5  < |r 6 | < 1,40.r 5  11. 0,002. f < d 7  < 0,022.f 12. 0.08.f < d 3  + d 4  < 0.92.f 13. 0,08.f < d 6  + d 7  + d 8  < 0,20.f 14. 0,20.f < r 5  < 0,28.f 15. 0,26.f < |r 6 | < 0,33.f 16. 0,24. f < D s -d z  < 0,30.f wherein the symbols have the following meanings: f = the focal length of the objective r s  ¢ À(r 3  + | r 9  |) D s  = the apical separation between surface 3 and surface 9 #r z  ¢ À (r 5  + |r 6 |) D z  = d 5  = the length of the diaphragm space B = the overall length of the objective d 3  = the axial separation between surface 3 and surface 4 d 4  = the axial separation between surface 4 and surface 5 d 6  = the axial separation between surface 6 and surface 7 d 7  = the axial separation between surface 7 and surface 8 d 8  = the axial separation between surface 8 and surface 9. Optical data are given for an example of the objective shown.
Patent GB-932484-A (GB)
Title: Resin coated fabric
IPC: D04H3/16
Filed: 1961-09-25
Abstract: 932,484. Pyroxylin coated fabric. E. I. DU PONT DE NEMOURS & CO. Sept. 25, 1961 [Sept. 26, 1960], No. 34217/61. Class 140. A pyroxylin coated fabric comprises a non- woven fabric containing, as the major fibrous component, continuous synthetic organic filaments having a loopy configuration and separate and random disposition within the fabric, the majority of the loops being disposed substantially in the plane of the fabric, and the filaments being bonded together at spaced points throughout the fabric. The filaments may contain at least 30 crimps per inch and may be held together at spaced points with a synthetic organic binder polymer which is different from the polymer of said filaments. The filaments may be composed of polyesters e.g. polyethylene terephthalate and polyhexahydro-p-xylylene terephthalate; polyamides e.g. polyhexamethylene adipamide, polycaproamide and copolymers thereof; polyhydrocarbons e.g. polypropylene and polyethylene ; polyurethanes; polycarbonates ; and polyacetals. Preferred binders are an 80/20 copolymer of ethylene terephthalate and ethylene isophthalate, 90/10 copolymer of hexamethylene adipamide and caproamide, a copolymer of 94-99% by weight of a methyl, ethyl, propyl or butyl ester of acrylic or methacrylic acid and 1-6% by weight of acrylic, methacrylate or itaconic acid preferably a terpolymer of 80-90% by weight ethyl acrylate, 4-20% by weight methyl acrylate or methyl methacrylate and 1-6% by weight acrylic or methacrylic acid. The fabric may also contain additional staple, crimped or uncrimped, organic or inorganic, natural or synthetic fibres. The pyroxylin composition may also contain drying oil, natural or synthetic or oil modified resin, pigments and plasticizers. A final coat of a non-pigmented and non-plasticized pyroxylin composition or a synthetic interpolyamide composition may be applied. The fabric may be subcoated and back-side coated with a composition containing the acrylic copolymer of the binder, and polyvinyl acetate. The coated fabric may be embossed and is particularly useful as a bookcover material. Specifications 712,950, 829,674, 841,230, 914,714 and 932,482 are referred to.
Patent GB-1017178-A (GB)
Title: Beam interruption detector
Inventor: HILSUM CYRIL
IPC: G08B13/184
Filed: 1963-08-29
Abstract: 1,017,178. Intruder alarms. NATIONAL RESEARCH DEVELOPMENT CORPORATION. Aug. 28, 1964 [Aug. 29, 1963], No. 34275/63. Heading G4N. [Also in Division H3] A detector for indicating the presence of an object in a path 5 comprises: a lamp 1, the energization of which is modulated by means of, for example, an oscillator 3; a receiver 8 producing an output signal in response to radiation falling on it; and a comparator 9 comparing the phase of the signal from the receiver 8 with that from the oscillator 3, to produce an output indicative of the presence of an object in the path 5. The path from the lamp 1 to the receiver 8 may include one or more mirrors 6 and lenses 4, 7.