baber/WOPTO huggingface dataset:
Patent GB-443337-A (GB)
Title: Improvements in and relating to circuits for electric discharge devices
IPC: H05B41/18
Filed: 1935-07-20
Abstract: 443,337. Supply systems for discharge lamps &c. BRITISH THOMSON-HOUSTON CO., Ltd., Crown House, Aldwych, London. July 20, 1935, No. 20692. Convention date, July 21, 1934. [Class 38 (iv)] [See also Group XL] One or more electric discharge lamps, each having an anode and a heated cathode normally connected in a D.C. circuit, are provided with means for preheating the cathodes by a current flowing in the reverse direction so that no discharge can then take place. In the arrangement shown in Fig. 1, two lamps in series are each provided with an anode 6, 10 and a cathode 7, 11 with a heating filament 9, 12 and are supplied with current from a generator 25 through a reversing switch 22. When starting, the switch is moved to its lower position and the anodes 6, 10 are thus connected to the negative pole of the generator and current flows only through the cathode heating filaments. When the switch is moved to its upper position, the anodes are connected to the positive pole of the generator and current will then flow in parallel across the discharge path and through the heating filaments. Film cut-outs 28, 29 in shunt to the lamps pass current when the lamps fail. In a modification, each valve is in shunt with a rectifier and current during normal operation flows in series across the discharge path and through the heating filament. In a further modification shown in Fig. 3, an A.C. generator 35 supplies pulsating preheating D.C. when the switch 36 is in its lower position, through a transformer 37 and transformers 51, 52 associated with each cathode filament 44, 45. The rectifiers 48, 49 ensure that only the half waves are utilized. When the switch is moved to its upper position, the full wave rectifier 38 supplies current to the discharge paths and to the primary windings of the transformer 51, 52 in series therewith.
Patent GB-614287-A (GB)
Title: Improvements in and relating to strainers for tea and coffee pot spouts and the like
IPC: A47J31/14
Filed: 1946-07-11
Abstract: 614,287. Strainers for teapots. WALLER, W. M., and WALLER, P. H. July 11, 1946. No. 20708. [Class 129] [Also in Group I] A strainer for insertion into a tea or coffee pot spout is formed of a closely-wound spiral 1 of wire with a closed apex, and a hook 2 for attaching the strainer to the outer end of the spout. Specification 614,285 is referred to.
Patent GB-774305-A (GB)
Title: Improvements in or relating to cooling means and techniques
Inventor: AUDAS FRANCIS GEORGE
IPC: C03B27/052
Filed: 1954-07-16
Abstract: 774,305. Toughening glass. CROXDALE ENGINEERING DEVELOPMENT CO., Ltd. July 5, 1955 [July 16, 1954]. No. 20740/54. Class 56 Glass 19 heated to semi-plastic state is toughened by immersion in a cooled fluidized bed 7 of sand or other discrete material. The whole bed is raised so as. to envelope the glass and is lowered after the glass has been toughened. Fluidization of the bed is effected by the admission of air from a pipe 10 to a space 11 beneath a porous ceramic plate 12, and cooling is effected by the circulation of water through coils 7a. The bed is raised and lowered by pneumatic cylinders 8.
Patent GB-866737-A (GB)
Title: Improvements in or relating to machine tools
Inventor: PAGET JOHN STAR
IPC: B23Q35/10
Filed: 1957-07-01
Abstract: 866,737. Slotting devices. NAPIER & SON Ltd., D. Aug. 7, 1958 [July 1, 1957], No. 20752/57. Class 83 (3). In a machine-tool such as a slotting machine, a fixture which includes a rotatable cutting- tool-holder is adapted to reciprocate during the cutting-stroke, and the holder is turned through a predetermined angle at the end of the stroke to produce a radiused corner in the work. The fixture comprises a lower element 4, Fig. 1, which is secured to an indexible work-table 2 and supports the work 7. An upper element 5 carries a rotatable housing 12 to which is splined a tool-slide 13, whose axial movement is governed by a cam control device 8, 20-23. Element 5 is attached to a ram 25 which may be secured to the main tool-ram 24. In operation, during the cutting stroke, movement of ram 24 and a tool 14 on slide 13 produces a shaped surface on the work due to the roller 23 moving over the cam 8. Towards the end of the stroke, ram 25 is automatically released from ram 24 and is locked to a stationary part of the machine, but continued movement of ram 24 causes a rack 26 thereon to rotate a pinion 27 on the tool-housing 12, whereby the tool is rotated about an axis 17, to cut the radius on the work, this cut also being under control of cam 8, since the roller 23 still partakes of downward movement of ram 24.
Patent GB-207601-A (GB)
Abstract: 207,601. Gledhill, A. H. Aug. 29, 1922. Factory and like time-recorders, autographic.-In apparatus of the autographic type the major portion of the movement of the operating handle is utilized to press the impression hammer directly against the type wheels and to actuate the paper feed mechanism and to move the shutter to expose the writing aperture, and the minor portion is effective to return the parts to their normal position. Means are also provided to prevent the operating handle being turned in the reverse direction. The main shaft a<2>carries a tappet or roller b adapted to engage a member b<3> pivoted at one end to the hammer B and connected therewith at its other end by a spring b<1> which is compressed during the printing operation. After the hammer has been withdrawn from the type-wheels C and paper D a cam d on the main shaft rocks an arm d<2> carrying a pawl d<3> adapted to engage the ratchet wheel d<4> and drive the paper winding drum d<5>; the cam d is shaped to produce a slow feed and thus prevent tearing of the paper and overrunning of the drum d<5>. A shutter E, which closes the writing aperture until the handle has nearly completed its movement, is positively moved by means of a cam e on the main shaft and a spring controlled three armed lever e<1> that is provided with a projection e<2> passing through a slot in the shutter. At the same time a cam f, Fig. 3, is adapted to release a hammer f<1> to ring a bell F. A spring a<3> attached to a stationary part a' and to an arm on the main shaft is adapted to return the parts to their initial position. To prevent the operating handle being turned in the reverse diection a mutilated ratchet wheel a and pawl a<1> is provided. The mutilated portions prevent the operating handle being locked with the printing hammer pressed against the type wheels.
Patent GB-1082495-A (GB)
Title: Improvements in or relating to hydraulic chocks
Inventor: BOWER LEWIS ROBERT
IPC: E21D15/44
Filed: 1964-05-20
Abstract: 1,082,495. Hydraulic jacks. A. G. WILD & CO. Ltd. May 5, 1965 [May 20, 1964], No. 20869/64. Heading B8J. [Also in Division E1] In a chock for mine roof supports comprising a hollow ram fixed to a base on which is slidably mounted a cylinder closed at the top and raised and lowered hydraulically, on the ram head 11 above the level of the seal 14 is an advance bearing ring 18 having a peripheral groove 20 wherein is inserted a split ring 21 of a different material the outside of which projects slightly from the outside of the ring 18 to rub against the inside of the cylinder and the inner wall of the seal 14 rests on a seat 16 in the head 11, to which the ring 18 is bolted. The split ring is made of asbestos ring bonded with a phenolic resin.
Patent GB-394150-A (GB)
Title: Improvements in and relating to the supply of materials
IPC: B01F15/04
Filed: 1932-07-25
Abstract: 394,150. Weighing-apparatus. NAAMLOOZE VENNOOTSCHAP INDUSTRIEELE MAATSCHAPPIJ VOORHEEN NOURY & VAN DER LANDE, 13, Brink, Deventer, Holland. July 25, 1932, No. 20956. Convention date, July 24, 1931. [Class 143.] The intervals at which an automatic weighing scale delivers its weighed charges of grain &c. are regulated by automaticallyoperated controlling means variable in its controlling effect independently of its speed o f rotation and co-operating directly. with a pawl device in such manner that the weighing is controlled in respect of time independently of the rate of filling of the scale pan. As shown in connection with a known construction of weighing scale embodying a tilting scale pan a, the pan, after tilting to discharge its contents, is retained in the tilted and depressed position shown by means of a pawl device f, e, a groove in which engages a projection c on the pan. The scale then remains inoperative until an adjustable pin g carried by a constantly-rotating disc h displaces the pawl device and permits the pan again to move upwardly in order to commence another weighing operation. The frequency of operation is regulable by providing the disc h with more or fewer pins, or by varying the speed of the disc. When a number of weighing scales are supplying material from several sources, for example for mixing in a flour factory, the pin discs h are mounted on a common shaft and the weighing scales discharge into a common feed mechanism. Specification 3840/94, [Class 143, Weighing-apparatus], is referred to.
Patent GB-711324-A (GB)
Title: Improvements in elastic mountings for bolts or shafts
IPC: F16B13/12
Filed: 1952-08-21
Abstract: 711,324. Resilient mountings. BACKHAUS,E. Aug. 21, 1952 [April 3, 1952]. No. 20982/52. Class 108(3) in a bearing for bolts, shafts, spindles &c. comprising a rubber sleeve A disposed between the bolt &c. 3 and an outer housing 2, the bolt 3 has a slot B filled with rubber which can be forced into the space normally occupied by the sleeve. Two toothed bars 5, 6 are disposed in the slot B. Axial movement of the bar 6, effected by rotation of a set-screw 7, produces an outward radial pressure on the rubber in the slot B. The bars 5, 6 may be self-locking and the setscrew 7 is then dispensed with, the bar 6 being driven in, as desired, by a hammer blow.
Patent GB-170344-A (GB)
Title: Improvements relating to sparking plugs
IPC: H01T13/46
Filed: 1920-07-12
Abstract: 170,344. Hanman, J. July 12, 1920. Sparking-plugs. - Interrupted threads are used in screwing a plug casing a into the cylinder or into an adapter a<3>, which is screwed into the cylinder. The earthed electrode is carried by a sleeve b, a flange b<1> on which is clamped between the insulator and casing.
Patent GB-1305133-A (GB)
Inventor: HAYES J C
IPC: B01J27/00
Filed: 1970-05-01
Abstract: 1305133 Reforming naphtha UNIVERSAL OIL PRODUCTS CO 1 May 1970 [28 May 1969] 21028/70 Heading C5E [Also in Division B1] Hydrocarbons are converted by contact with H 2  at elevated temperature and pressure in the presence of a catalyst comprising 0À01-2À0 wt. per cent of a platinum group metal which is substantially all in elemental form, 0À01-5À0 wt. per cent of germanium which is substantially all in a higher oxidation state than the metal, 0À5-10 wt. per cent of a halogen and a porous carrier. In examples a Pt-Ge-Cl on γ-alumina catalyst is used in the reforming of a heavy naphtha to give a C 5+  product at 517-566C., LHSV of 1À5-3À0, 6À8-34 atm. g. and a molar ratio of H 2  : hydrocarbon of 8-10 : 1.
Patent GB-1070861-A (GB)
Title: Production of images on electrophotographic material
IPC: G03G13/22
Filed: 1964-05-21
Abstract: A latent image is formed on an electrophotographic material by imagewise application of pressure by or through a non-marking medium, i.e. one that does not make a mark by the transfer of a marking deposit to or by abrasion of the image-receiving surface. The electro photographic materials are inorganic or organic photoconductors such as zinc oxide, cadmium sulphide or a polyvinyl carbazole.  Pressure may be applied by a typewriter key or pencil applied through a sheet of bond paper placed on the electrophotographic material or directly by a person's fingertips in the case of fingerprinting (Example 30). The electrophotographic material may be electrostatically charged before or after the application of pressure or not charged (Examples 26, 27, 28 and 29).  The material may be exposed uniformly to ultra-violet or actinic radiation before or after charging.  The latent image produced is developed with dry toner, liquid developer, or toner dispersed in a carrier liquid and then fixed.
Patent GB-1269362-A (GB)
Title: Integrated semiconductor circuit arrangement
IPC: H01J31/48
Filed: 1969-04-25
Abstract: 1,269,362. Integrated circuits. ROBERT BOSCH G.m.b.H. 25 April, 1969 [27 April, 1968], No. 21140/69. Heading H1K. [Also in Division G3] The drive transistor(s) associated with one or more power transistors are of complementary type thereto; all the transistors are integrated in a single semi-conductor body which has a low resistivity substrate heavily doped with an impurity of low diffusion coefficient and bearing an epitaxially grown layer of lower doping and higher resistivity. Zener and rectifier diodes, resistors and a junction capacitor may be integrated in the same body. Two structural types are outlined; in one the substrate and layer are of the same conductivity type, in the other they are of opposite conductivity types. In the case where the substrate and layer are of the same conductivity type the power transistors are double diffused and complementary transistors are triple diffused. The power transistors share the common substrate as collector region, this being provided with a bottom surface electrode. Isolation between the power transistors and the complementary transistors utilizes the epitaxial layer; it is stated that further diffusion into the layer may enhance the isolation. In the case in which the substrate and layer are of opposite conductivity types the substrate again forms the common collector of the power transistors but these are formed by a single diffusion (to form the emitter region) and have a homogeneously doped base, the epitaxial layer. The complementary transistors are formed by double diffusion and are isolated by normal junction isolation diffusion extending through the epitaxial layer. The circuits described are on-off series switching regulators for feeding the field winding of a generator the voltage of which is being regulated. In each regulator the power transistor(s) is (are) in series with the field winding of the generator. The input to the regulator is parallelled by a Zener diode to protect the regulator (and entire system) against gross over voltages. The line voltage is sensed by a potentiometer and Zener diode combination and used to switch one or more driver transistors when the diode changes state. This Zener diode may be formed by the addition of a second "emitter" region to the (or the first) driver transistor. One or more normal diodes may be connected in series opposition with the Zener diode to provide temperature compensation. Further temperature compensation may be provided by suitably placed resistors in the circuit. The circuits incorporate positive feedback to ensure complete switching of the power stage, thus the field winding is either fully energized or is not energized-the winding is shunted by a free running diode to give safety in this mode of operation.
Patent GB-902380-A (GB)
Title: Preparation of benzothiadiazine compounds
Inventor: IRONS JOHN SIDNEY
IPC: C07D/
Filed: 1959-06-19
Abstract: Benzothiadiazine-1 : 1-dioxides in which the heterocyclic ring is saturated, of the formula <FORM:0902380/IV (b)/1> wherein R is hydrogen, halogen e.g. Cl or F, or a hydrocarbon, e.g. alkyl, ether, e.g. alkoxy, nitro or trihalomethyl, e.g. CF3, group and each of R0 and R1 is a hydrogen atom or a hydrocarbon group optionally bearing ether, nitro or halogen substituents, are prepared by reacting the corresponding benzothiadiazine-1 : 1-dioxide of the formula <FORM:0902380/IV (b)/2> with an aldehyde R0CHO or a compound capable of yielding such an aldehyde under the reaction conditions, such as an acetal or aldol, suitably by refluxing in a polar solvent such as water or ethanol, under mildly alkaline conditions.  Examples describe the conversion of chlorothiazide into dihydrochlorothiazide by reaction with formaldehyde or paraformaldehyde.  Specifications 826,921, 826,922, 826,923 and 826,924 are referred to.
Patent GB-715437-A (GB)
Title: Improvements in the manufacture of metal tubing
Inventor: SNIVELY ANDREW JOHN
IPC: B21C37/09
Filed: 1952-08-23
Abstract: 715,437. Metal tubes. BUNDY TUBING CO. Aug. 23, 1952; No. 21228/52. Class 99 (2). [Also in Group XXII] A two-ply metal tube is formed from a continuous strip 2 of metal with the longitudinal edges 14, 15 thereof abutting against an offset portion 13, and a ribbon of bond metal 21 having a lower melting point than the strip, is introduced between the plies during the forming process; the tube is subsequently heated to melt the bond metal which runs between the plies and into the longitudinal seam to unite the plies together and form a longitudinal joint. The strip preferably of steel and is bent by a tube mill 3, having a plurality of rollers, to provide an inner ply 10 and an outer ply 11, Fig. 2. The bond metal is preferably copper or copper alloy and may be accommodated within a groove, formed in the strip by the first set of rollers. A mandrel 4 is introduced into the tube during its formation. A plurality of tube lengths are passed simultaneously through a furnace within which is maintained a non-oxidising or reducing atmosphere. A cooler is disposed adjacent the furnace.
Patent GB-574437-A (GB)
Title: Improvements in and relating to means for delivering flour or other powdered material
IPC: B65G65/42
Filed: 1943-12-17
Abstract: 574,437. Endless-chain conveyers. HARBER, L. S., and BAKER PERKINS, Ltd. Dec. 17, 1943, No. 21235. [Classes 78 (i) and 78 (iv)] Flour and other powdered material is delivered from a bin by an endless chain conveyer having longitudinally spaced pusher elements which extend over the bottom of the bin and above which is positioned an adjustable division blade to regulate the thickness of the layer of material delivered. The bin 1 has a charging aperture 7, an outlet 3 and an inclined bottom 2. The division blade 27 is mounted on a shaft 26 which extends through a side wall of the bin and has fixed upon it an adjustment lever 29. The handle 32 of the lever is provided with an axially displaceable pin for engaging any one of a series of apertures 30 in a plate 31. A plate 33 extending across the bin prevents flour being carried up between the back of the blade 27 and the curved track of the conveyer. A curved plate 34 directs the flour which has not been discharged back towards the feed end. of the bin. Tracks 21, 35 are provided for the conveyer chains. The outlet 3 communicates with a trough 9 which may contain a screw or other conveyer. A pair of bins may be bolted together side-by-side.
Patent GB-390046-A (GB)
Title: A rope and twine trimmer
IPC: D02J3/14
Filed: 1932-07-28
Abstract: 390,046. Ropes. McNAMARA, J. F., Avondale, Finnart Road, Greenock. July 28, 1932, No. 21270. [Class 109.] A machine for trimming ropes or twines comprises two sets of spiral blades 7, each revolving at high speed against a cutting blade 8. The blades 7, 8 are mounted in a rotating cylinder 3, and are adjustable to suit the size of rope or twine. The spiral blades 7 are driven by a pinion 10 and an intermediatepinion engaging a fixed internally toothed wheel 12 integral with the bracket 5 supporting the cylinder 3.
Patent GB-320874-A (GB)
Title: Improvements in and relating to cascading apparatus comprising a series of rotatable retarders
IPC: C10B7/00
Filed: 1928-07-23
Abstract: 320,874. Farnham, R. V. July 23, 1928. Continuous - discharge apparatus with stationary containers. - Cascading apparatus comprising a series of rotatable retarders A. B, such as described in Specifications 283,717 and 308,074, [both in Class 34 (ii), Drying systems &c.], are provided with a series of nozzles a', b<7> - - -along the length of each section of the apparatus so that injected liquid, gaseous or pulverulent media play over the whole of each retarder and on the cascading material which is introduced by a rotatable hopper G. The retarders, which may be staggered, preferably rotate in gas-tight association with one side a<3>, b<3> - - - of each section leaving a gas passage a<5>, b<5> - - on the other. Drying or other gases may pass through the apparatus in either direction. A modified form of retarder comprises a double sided tray of H-section. The apparatus may be used for spraying granite or other road-making material with tar. The Pro. visional Specification describes the manufacture of smokeless fuel by spraying tar or paraffin into the cascader.
Patent GB-214265-A (GB)
Abstract: 214,265. Marconi's Wireless Telegraph Co., Ltd., (Assignees of Shapiro, L.). April 23, 1923, [Convention date]. Receiving sets, construction of. - Consists mainly in providing within the casing of a gramophone sound-box, in addition to means for operating the diaphragm by a stylus coacting with a record, electromagnetic operating-means under the control of radio receiving apparatus, either means for operating the diaphragm being made effective as required. Wireless receiving apparatus is preferably arranged on a panel in the cover of the machine casing, as described in Specification 203,710, and leading wires 128 pass therefrom through the tone-arm 20, Fig. 3, to the sound-box 22. The sound-box is turned back to rest on a stop 124, as shown in Fig. 3, when the wireless receiver is in operation, the stylus 21 being then away from the gramophone turntable. Figs. 7 and 10 show the construction of the sound-box. Instead of a single sound-bar and diaphragm operated by alternative devices, a number of separately-actuated sound-boxes may be provided on the tone-arm.
Patent GB-823472-A (GB)
Title: Process and apparatus for the production of hydrolyzed starch syrup
IPC: C13K1/06
Filed: 1957-07-05
Abstract: 823,472. Hydrolysing starch. KROYER, K. K. K. July 5, 1957 [July 11, 1956], No. 21430/57. Class 127. In the conversion of a continuous stream of starch by heat treatment, the stream is divided into at least two branch streams which are subjected to separate reaction conditions and the streams are re-combined; it is stated that by mixing the products of higher and lower degrees of conversion, the viscosity of the resultant syrup may be controlled to a certain extent relative to the sugar content. The temperature, pH values or rates of flow employed in branch streams may be different in each ease. Referring to Fig. 1, acidified starch slurry is pumped through a heat exchanger 3 into a tubular heater 4 of which the discharge end is connected through a reducing valve 5 to a flash chamber G. At a tapping point 7, part of the flow is by-passed without further treatment through a check valve 8 direct to the pressure side of the valve 5. Flow meters 9, 10 enable a check to be kept on the flow ratio between the two branch streams. Other arrangements of apparatus are depicted diagrammatically in Figs. 2, 3, 4 and 5 (not shown).
Patent GB-654065-A (GB)
Title: Improved method of and apparatus for moulding thermosetting materials
IPC: B29C35/02
Filed: 1947-08-07
Abstract: 654,065. Hoppers. GENERAL MOTORS CORPORATION. Aug. 7, 1947, No. 21498. Convention date, Aug. 22, 1946. [Class 78 (i)] [Also in Groups V, XVIII and XXIX] Powdered moulding material falls from a hopper 300 into a measuring device (see Group XVIII), comprising a rotatable tube 313, from which the material drops through a valve 359 into a hopper 360. The valve is opened and closed by a lever 366, the upper edge of which has a knife-edge to prevent material resting on it. After the valve is closed, the material is blown by compressed air, supplied either from a pipe 377a or a pipe 377b, through a pipe 378 to an upper heating chamber. Whether the pipe 377a or the pipe 377b is used, depends on the nature of the material. Any dust-laden air escaping past the valve 359, is removed through a pipe 376 to a dust collector 375. Specification 629,228, [Group XI], is referred to.