baber/WOPTO huggingface dataset:
Patent GB-317483-A (GB)
Title: Improvements in or relating to electric incandescent lamps
IPC: H01K1/70
Filed: 1929-08-13
Abstract: 317,483. General Electric Co., Ltd., (Assignees of Patent-Treuhand-Ges. f³r Elektrische Gl³hlampen). Aug. 17, 1928, [Convention date]. Addition to 297,833. Cut-out arrangements.- Cut - out devices as described in the parent Specification are applied to the caps of bulbs, intended to be used in series, by using the cap contacts as the outer metallic layers of the cut-out, the non- metallic layers forming a bridge between the contacts to short-circuit the bulb when its filament fails. The contacts are formed of, or coated with, lead or silver and are bridged by a layer consisting of or containing cuprous iodide or oxide. In the construction shown in Fig. 2, the centra contact b of a. screw cap is connected to the shell contact a by a number of strips e of cuprous iodide inserted in grooves in the insulating material of the cap. The iodide may be applied by mixing it with a binder of shellac solution, filling it into the grooves, and then evaporating the binder. Salts of easily fusible metals, such as cuprous or lead chloride may be added to the iodide paste so as to decompose and form a conductive metallic connection when the filament fails. In the construction shown in Fig. 3, a cap f coated with lead or silver is soldered to the centre contact b and extends nearly to the shell contact a, the iodide bridge g<1> being clamped in the intervening gap. The bridge may be formed by a lead wire coated with cuprous iodide, the lead serving to solder the parts a, f together when the bridge is pierced. The device may be similarly applied to bayonet-cap bulbs.
Patent GB-961481-A (GB)
Title: Improvements in and relating to the preparation of dicumyl peroxide and nuclear chlorinated derivatives thereof
IPC: C07C409/16
Filed: 1962-06-27
Abstract: Dicumyl, bis-(p-chlorocumyl) and bis (3, 4-dichlorocumyl) peroxides are prepared by reacting the corresponding a -cumyl chlorides with an aqueous solution of H2O2 at 0-40 DEG C., the pH of the reaction mixture as measured or a pH-meter with a glass/calorel electrode being below 2.5.
Patent GB-718578-A (GB)
Title: Process for the catalytic cracking of hydrocarbon oils
IPC: C10G11/18
Filed: 1952-10-03
Abstract: <PICT:0718578/III/1> In a fluidized catalyst cracking process in which fluidised catalyst is circulated through a reactor 1, a separate stripper 2 and a regenerator 3 and in which the vapours from the stripper are combined with the reactor product vapours by a pipe 15 leading to the reactor vapour space, the vapour pressure in the stripper is maintained constant, despite fluctuations in pressure in the reactor 1, by a control valve 14, in the stripper vapour outlet. By this means the pressure drop at the slide valve 16 is maintained constant, ensuring constant rates of catalyst flow. The pressure in the vapour space of the reactor may be varied during operation to keep the catalyst pressure in the standpipe 13 constant when the depth of catalyst bed in the reactor 1 is varied to control, e.g. the coke formation.
Patent GB-339666-A (GB)
Title: Improvements in or relating to carburettors for internal combustion engines
IPC: F02M19/035
Filed: 1929-08-14
Abstract: 339,666. Inventions Developments, Ltd., Mongiardino, J. F., and Turner, W. J. Aug. 14, 1929. Surface carburettors.-The carburettor com. prises two portions 2, 3 bolted together, the part 3 containing an air strangler 16, and the part 2 enclosing a diffuser body 1 covered, with gauze or other fuel-retaining material 11 to which fuel is fed from float chamber 8 through duct 7, central bore 5 and radial passages 9. From each of these passages 6, air ducts 17 lead to the lower end of the diffuser, the ends of the ducts being nearly perpendicular to the direction of air flow. The fuel-retaining material is secured by rings of wire in. grooves 12, 15 on the body 1. A choke tube 18 intensifies the depression around the outlets of the passages 9, such outlets being larger than the passages to produce rupture of any films that may form and prevent siphon action. Into the upper end of the bore 5 is screwed a pilot nipple 20 the orifice of which discharges into a tube 29 carried by an axially adjustable tube 26 in a thickened portion 22 of the carburettor wall. An aperture 28 in tube 29 registers with a duct 23 leading to the engine side of the throtle valve 10. The tube 29 is secured by a screw 25, and the quantity of slow-running mixture is controlled by a screw 30. As a modificatian a horizontal carburettor is described, the fuel after leaving passages 9 flowing turbulently to large apertures covered with fuel-retaining material. Specifications 170,074 and 198,350 are referred to.
Patent GB-532425-A (GB)
Title: Improvements in and relating to electric insulating material
IPC: C08K5/523
Filed: 1939-08-30
Abstract: 532,425. Vinyl resin compositions. BRITISH THOMSON-HOUSTON CO., Ltd. Aug. 30, 1939, No. 24889. Convention date, Aug. 31, 1938. [Class 2 (iii)] An electrical insulating composition consists of a polyvinyl halide, a plasticizer and a small proportion of a lead salt of phenol, a lead salt of #-naphthol, or a lead salt of an alkyl or aryl nuclear substitution derivative of phenol or #-naphthol. A small proportion of finely divided carbon black may be incorporated in the composition. The ingredients are preferably compounded by milling on differential rollers, and the compositions may be aged by maintaining at an elevated temperature for a period of time. Examples are given of compositions consisting of polyvinyl chloride, tricresyl phosphate and the lead salt of phenol, ptertiary amyl phenol, #-naphthol, 1-tertiary amyl #-naphthol, o or p-phenyl phenol, 2-4 di-amyl phenol, or o ethyl phenol. Specification 450,856 is referred to.
Patent GB-222676-A (GB)
Title: Improvements in or relating to centrifugal filters, separators, and the like
IPC: B04B3/04
Filed: 1923-10-09
Abstract: 222,676. Lilleshall Co., Ltd., and Bishop, C. A. Oct. 9, 1923. Strainer separators.-The rotary scraper 7 of a strainer separator is brought by an axial movement into position to scrape the filter. The scraper is of spiral form and is carried by the rotor 3 on the shaft 1. The strainer 5 is of conical form, and may have longitudinal grooves; it is carried by a sleeve 17 loose on the shaft 1. The material enters the member 2, passes through the distributing channels 3 and is thrown against the filter cloth 6. The liquid passes through the filter, and the spiral 7 scrapes the filter cloth when the handle 12 is rotated. This handle works in a thread on a non-rotary shaft 11 which carries a wedge 8 supporting the bearing 9 at the lower end of the shaft 1. The withdrawal of the wedge lowers the shaft 1 and scraper 7. This movement may be effected automatically at intervals. The scraper and filter run at different speeds so that the scraper conveys the solids downwards, or the relative motion between the filter and scraper may be discontinued at will to provide increased time for filtration.
Patent GB-624767-A (GB)
Title: Improved closed core-type coil
IPC: H01F27/255
Filed: 1944-12-15
Abstract: 624,767. Inductances; COMMUNICATION ENGINEERING PTY., Ltd. Dec. 15, 1944, No. 21568. Convention date, Sept. 9. [A Specification was laid open to inspection under Sect. 91 of the Acts, May 14, 1945.] [Class 38 (ii)] After coils 11, 12 of an inductor have been put on limbs 6, 7 of a powdered magnetic core, the magnetic circuit is closed by a bridge 8 fixed in position by magnetic cement. There may be a tongue-andgroove connection as well, Figs. 3, 4 (not shown). A suitable magnetic cement is the subject of Specification 616,249.
Patent GB-467254-A (GB)
Title: Improvements in rotating cooling drums
IPC: A23D9/02
Filed: 1935-09-10
Abstract: 467,254. Solidifying liquid films by cooling. AKTIESELSKABET T. T. SABROE & CO. Sept. 10, 1935, No. 25176. Void. Convention date, Nov. 7, 1934. [Class 29] In a rotating cooling drum a the interior of which is connected by a stationary hollow shaft f to a eompression refrigerating plant, the shaft supports a float l which actuates a valve m to open or close the feed pipe k for the liquid refrigerating medium supplied to the drum. The movement of the float is damped by surrounding it with an apertured box n suspended from the shaft and also by affixing a scraper p to the shaft which constantly returns part of the liquid flung out to the inner surface of the drum back to the box n, A collar e secured concentrically with the shaft traps incoming lubricant from the stuffing box g into the drum and returns it through the vapour outlet pipe h.
Patent GB-208588-A (GB)
Title: Improvements in or relating to ropeway bucket conveyor systems
IPC: B65G67/00
Filed: 1922-09-19
Abstract: 208,588. Holt, H., (formerly Otto, H.). Sept. 19, 1922. Addition to 183,260. Shoots.-Rotary screws or reciprocating members rotate with and are actuated by the rotation of the bucket charging device to feed the material positively through the shoots. An annular hopper 48 mounted on the central support 47 has depending from it shoots 67, each of which has a rear wall 68, an horizontal bottom, and an open end 69. A feeding screw 70, Fig. 1, is supported within the shoot and is driven by the engagement of a bevel wheel 72 on its spindle with a semicircular rack 73 mounted on the support 47. A feeding member 74, Fig. 3, is pivotally connected to the top of the shoot and is reciprocated by a rod 76 and eccentric strap 75. A hinged extension 77 of the member 74 rests on the floor of the shoot. A hinged closure 79 is lowered automatically during discharge by a link 81 and an arm 83 mounted on the shaft 55 of the parent Specification.
Patent GB-1071612-A (GB)
Title: Improvements in or relating to stuffing box packings
Inventor: SCHUBERT RUDOLF
IPC: F04B39/04
Filed: 1964-06-18
Abstract: 1,071,612. Stuffing-box packing. LINDE A.G. June 14, 1965 [June 18, 1964], No. 25325/64. Heading F2B. In a stuffing - box packing composed of a plurality of non-lubricated sealing rings, some at least of the sealing rings are provided with passages leading from the sealing face to the outside, through which part at least of the leakage gas can be conducted to the sealing faces of the sealing rings. Alternatively, the material of the sealing rings is porous, this porosity being a substitute for the passages. The sealing faces of the sealing rings may have transverse circumferential grooves, or circular holes, at the ends of the passages, the diameter of the holes or the width of the grooves being less than about one-third of the axial length of the sealing face of a sealing ring. The sealing face of each sealing ring may have axial grooves at the ends of the passages, these grooves connecting the passages and the transverse grooves or the holes with that side of the sealing ring at which the lower pressure exists. The side of each sealing ring at which the higher pressure exists may contain radial grooves through which a balance can be established between the pressure on the outside and the higher pressure existing at a given seal. Preferably, each sealing ring is tangentially divided and made up of several segments and has a radially-divided covering ring consisting of several segments and located so that the segments of the covering rings cover the tangential joints in the sealing ring. The sealing ring may have a supporting ring which may be radially divided. The stuffing-box shown comprises sealing carriers 35, 36 and 37 and a cavity ring 38, the carriers 35 each housing a covering ring 40, a sealing ring 41 and a supporting ring 42, the carrier 36 housing two identical throttling rings 43, the carrier 37 housing two identical sealing rings 44 while the ring 38 contains a tapping 45 to which a pipe is connected for the extraction of leakage gases. The segments of the rings are held together by closed coil springs 48 and pressed into contact with piston-rod 32. Successive sealing rings in the direction of reducing pressure are provided with passages of progressively increasing cross-sectional area or with a progressively increasing number of passages or with transverse grooves or with holes of increasing size. Alternatively, when the sealing rings are porous, successive sealing rings are of increasing porosity. In a modification, Fig. 10 (not shown), the sealing carriers are arranged in a different sequence.
Patent GB-236786-A (GB)
Title: Improved electrical conductors
IPC: H01B9/02
Filed: 1924-10-24
Abstract: 236,786. Railing, M. J., Cutting, C. E., and Quance, F. G. Oct. 24, 1924. Earth-continuity couplings. - An uncovered solid metallic wire d is laid in contact with the inside of the metallic sheath a of a cable to provide means for electrically connecting the sheaths of cables together and to metallic fittings.
Patent GB-1285856-A (GB)
Title: Automatic bar end sensing apparatus
IPC: B21J13/08
Filed: 1971-04-19
Abstract: 1285856 Feeding bars FORD MOTOR CO Ltd 19 April 1971 [15 May 1970] 25500/71 Headings B3H and B3W Bars fed end to end to a shear 2 for cutting into workpieces to be subjected to successive forging operations pass through a sensing device comprising guide rings 3 and 4 the longitudinal axes of which are spaced transversely by an interval a and a probe 5. The bars are fed by intermittently operating rollers 1 and the probe 5 is urged upwardly between feed steps. If a junction between bars is located between the probe and the ring 3 the probe moves through the interval a which trips a limit switch 6. This switch triggers a first counter 7 which is set to the number of workpiece lengths between the sensing device and the shear 2 and which, by means of pulses coming from a gripper 9, counts the workpieces cut from the bar and on reaching the pre-set number returns to zero and trips a second counter 8 which is set to the desired number of scrap pieces per joint. The counter 8 causes the gripper 9 to eject the pre-set number of scrap pieces. Should the ends of very hot bars have been temporarily welded the probe will separate them.
Patent GB-1172887-A (GB)
Title: Improvements in or relating to Radiation Detection Apparatus
Inventor: BUBBINS KEITH
IPC: G08B17/12
Filed: 1967-06-02
Abstract: 1,172,887. Radiation detection apparatus. K. BUBBINS and S. HALL. May 30, 1968 [June 2, 1967], No. 25676/ 67. Heading G1A. [Also in Division G4] Radiation detecting apparatus e.g. in fire-alarm apparatus comprises a first semi-conductor device PT1 Fig. 1 having a predominant response to radiation in the infrared region, a photo-cell PC, on which the radiation also impinges and having a predominant response in the ultraviolet region, the semi-conductor device and the cell being connected in series across a fixed potential source + -, a fixed potential from a point P having a value less than that of the source applied at the junction T between the semi-conductor device and the cell, and, connected to the point T for causing an alarm to be given in response to a change of potential thereat when the device and cell are irradiated by infrared, but not when they are irradiated by infrared and ultraviolet, a second semi-conductor device PT2 shielded from radiation and from quick acting changes in ambient temperature, and having a predominant response to infrared so that on a slow rise in ambient temperature the increase of conductivity of the two semi-conductor devices is substantially equal and no potential change occurs at junction T, whereas on a rapid rise a potential charge occurs to give an alarm. The output is connected to a relay REL via three stages of transistor amplification, and in a bigger system using a number of groups of such apparatus, the outputs of the separate detector circuits are isolated by rectifiers, and a common amplifier which may be plugged in is provided for each group. A lamp is provided to indicate that all the circuits in a group are working and facilities for applying a potential to point T to simulate a fire are arranged to operate a further flashing light. Continuity tests on the circuits may also be made. The alarm circuit is made self-holding and a reset button is provided. A platic detector block 30, Fig. 3, having a transistor 31 and a photo-cell 32 is described, the second transistor being embedded in the plastic. Physical protection for the sensors is given by guards 35.
Patent GB-865987-A (GB)
Title: Improvements in or relating to dental instruments
IPC: B23B47/10
Filed: 1959-07-27
Abstract: 865,987. Dental handpieces. GALLAY, R., and STERN, C. July 27, 1959 [Aug. 14, 1958; Dec. 3, 1958], No. 25685/59. Class 81 (2). A high-speed dental engine is characterized by two coaxial ball or roller bearings 3, 4, the inner races 9, 10 of which are connected, at least indirectly and in spaced relationship to one another, to the spindle 15 of the tool to be driven. Nozzles 16, 17 are adapted to direct a stream of pressure fluid, preferably air, between the two bearings so as to drive, directly or indirectly, the cages 7, 8 thereof, and thereby drive the inner races 9, 10 at a speed which is a multiple of the speed of the cages. As shown, the inner races 9, 10 are secured to a tubular member 11 in which the spindle 15 is retained by means of a spring 14. In another embodiment (not shown), a single nozzle directs air against the rotor of a turbine which rotates freely on a tubular member similar to the member 11 but is coupled to the cages of two ball or roller bearings, the inner races of which are rigidly secured to the tubular member. Alternatively, the rotor may be adapted to direct the air received from the nozzle on to the two cages.
Patent GB-1329758-A (GB)
Title: Passenger conveyor warning apparatus
IPC: B66B29/08
Filed: 1971-04-19
Abstract: 1329758 Endless conveyers GOODYEAR TIRE & RUBBER CO 19 April 1971 [28 April 1970] 25714/71 Heading B8A In a passenger walkway means are provided for warning the passenger that he is approaching the end of said walkway. In the Figure shown the walkway is formed by a transversely rigid endless belt 2 supported over its main portion 19 by edge rollers 27, thereby providing a smooth ride for the passengers and is supported at its end region 20 by a series of rollers 29 extending across the conveyer to induce a vibratory motion to the conveyer and thereby warn the passengers of the approaching end of the conveyer. In an alternative embodiment, Fig. 5 (not shown), the belt (2<SP>1</SP>) is transversely flexible and is supported in its main region (19<SP>1</SP>) by a plurality of closely spaced rollers (30) extending across the full width of the conveyer. The said rollers (30) at the end of the conveyer being spaced apart to a greater extent to induce a vibration of a different frequency to said belt (2<SP>1</SP>). In a further embodiment Fig. 6 (not shown) the walkway is formed by a plurality of pivotally interconnected carriages (33) each with wheels (34) to engage a support track (36). The support track (36) being provided with ridges (37) adjacent the end of the walkway to induce a vibratory motion to said carriages.
Patent GB-1263858-A (GB)
Title: Antibiotics and the manufacture thereof
IPC: C07G11/00
Filed: 1970-05-28
Abstract: 1,263,858. The antibiotic selenomycin and its acetyl derivative. GRUPPO LEPETIT S.p.A. 28 May, 1970 [13 June, 1969], No. 25804/70. Heading C2A. The antibiotic selenomycin, active against gram positive bacteria; of melting point 135- 138 C.; being soluble in C 1-8  alkanols, chloroform, ethyl acetate, acetone, dioxane and hot benzene (60 C. to B.P.); insoluble in water at neutral and acidic pH, soluble in alkaline water and insoluble in diethyl ether; having an U.V. absorption spectrum with the following maxima in 0.1 NHCl, shoulder at 245-257 mÁ (E<SP>1%</SP> 1cm. =  41), in pH 7À3 buffer solution, 295 mÁ (E<SP>1%</SP> 1cm . = 88), in 0À1N NaOH, 295 mÁ (E<SP>1%</SP> 1cm . = 88); having an acid group with pK a  5.5; having an I R. absorption spectrum in Nujol with maxima at the following wavelengths expressed in cm.<SP>-1</SP>: 3400, 1720, 1650, 1570, 1550, 1350, 1245, 1200, 1170, 1100, 1040, 1000, 980, 950, 912, 870, 835, 812, 783, 770, 738, 720 and 680; giving positive Tollens and Fehling reactions and negative Schiff, ferric chloride and Molisch reactions, decolorising potassium permanganate in neutral and acid solution; giving a phenylhydrazone with 2,4-dinitrophenylhydrazine, and giving a brown colour with concentrated sulphuric acid and concentrated hydrochloric acid, is prepared by cultivating a selenomycinproducing strain of Streptosporangium brasiliense under aerobic conditions in an aqueous nutrient medium containing a source of carbon (e.g. glucose, xylose or galactose) and of nitrogen and inorganic salts at 25 to 35 C. for a time sufficient to provide substantial antimicrobial activity in the medium and then isolating the antibiotic therefrom. Acetylselenomycin of melting point 152-154 C., containing the elements carbon, hydrogen and oxygen in substantially the following proportions by weight: carbon 55À5%, hydrogen 4À86% and oxygen 38À3%; containing the acetyl group in a proportion of 21%; showing specific rotatory power (α)<SP>22</SP> D -34 (C = 0À3% in methanol); having an ultraviolet absorption spectrum with the following maxima in 0À1N NaOH, 294 mÁ (E<SP>1%</SP> 1cm  = 60), in 0À1 NHCL and in pH 7À3 buffer solution, shoulder at 250- 270 mÁ; having an I R. absorption spectrum in Nujol at the following wavelengths expressed in cm.<SP>-1</SP>: 1790, 1750, 1720 (sh), 1640, 1550, 1240, 1195, 1130-1040, 980, 958, 920, 865, 780 and 750-720, is prepared by acetylating selenomycin with acetic anhydride in pyridine. Selenomycin may be isolated by separating the medium from the mycelium of the organism, adjusting the pH of the separated medium to an acid pH greater than about pH 5 and thereafter extracting the medium with an organic solvent e.g. butanol, ethyl acetate or chloroform, and then removing the solvent. Pharmaceutical compositions comprise the antibiotic selenomycin or acetylselenomycin together with a pharmaceutically acceptable carrier.
Patent GB-532626-A (GB)
Title: Improvements in or relating to a transparency carrier for use with photographic enlargers
IPC: G03B27/73
Filed: 1939-09-14
Abstract: 532,626. Photographic enlargers for colour transparencies. KODAK, Ltd. Sept. 14, 1939, No. 25867. Convention date, Sept. 14, 1938. [Classes 98 (i) and 98 (ii)] A transparency carrier for use in an enlarger for making colour separation negatives, comprises a base plate 25 and cover plate 31 having registering exposure apertures, adapted to be clamped together by locking means with a transparency between them, and with registering marginal apertures 42, 421 at one edge of the exposure apertures having between them a multi-coloured filter or filters used in identifying the separa'ion negatives, and with registering apertures 48, 48<SP>1</SP> in another edge between which the density scale strip used for balancing the negatives is placed. The colour filters correspond in colour to those employed in making the separation negatives, so that each negative bears a black dot in the position corresponding to the filter having the same colour as the filter used in making it, thus serving to identify the negative. The film F is received in a recess extending across the upper surface of the base plate 25. The cover plate 31 is held by a rotary latch 32 and is forced down by means of bevelled edge portions on it which are engaged by corresponding surfaces on the latch and an overhanging portion 29 on the base plate. The aperatures 42, 42<SP>1</SP> and 48, 48<SP>1</SP> in the carrier shown are formed in the bevelled margins of the exposure opening and are of countersunk form.