baber/WOPTO huggingface dataset:
Patent GB-1021541-A (GB)
Title: The protection of x-ray tubes from over load
Inventor: CONNELLY FRANK CECIL
IPC: H05G1/46
Filed: 1961-02-24
Abstract: 1,021,541. Control apparatus for X-ray tubes. RANK-BUSH MURPHY Ltd. Feb. 26, 1962 [Feb. 24, 1961], No. 6979/61. Heading H2H. X-ray apparatus in which it is impossible to set the applied voltage, the X-ray tube current and the duration of the tube current to values which, together, would damage the tube as described in Specification 871,785 is modified so that a switch 24 in the supply circuit to the tube is carried on a carriage 22, the position of which is adjusted against a spring 26 by a flexible cord 18 led around a pulley 20 according to the settings of the voltage setting controller 14 and the current setting controller 16, the switch 24 co-operating with an abutment 28 in the time setting controller 30 to cause the switch contacts to be opened if the three settings are such as would overload the tube. In a further embodiment the flexible cord is endless and passes over drums associated with the voltage and current controllers.-
Patent GB-638513-A (GB)
Title: Process of preparing penicillamine and its derivatives
Filed: 1947-03-13
Abstract: N : S-Diacyl-dl-penicillamines of the formula <FORM:0638513/IV (b)/1> where R is an alkyl group are prepared by heating the corresponding a -acylamido-b  : b -dimethylacrylic acid with an alkane thiolic acid preferably using an excess of the thiolic acid and conducting the reaction at a temperature of 85 DEG  C. or above. The reaction time at 90 DEG  C. is about sixteen hours.  Hydrolysis of the product preferably by mineral acid or by alkaline solution gives penicillamine or its salts.  Purification of the penicillamine salts is effected by neutralizing to a pH of about 6, filtering and adding the filtrate to an aqueous solution of a mercuric salt, e.g. mercuric chloride, bromide or acetate to precipitate an insoluble addition compound which is suspended in water and treated with hydrogen sulphide to precipitate mercuric sulphide and leave the corresponding salt, e.g. the chloride, bromide or acetate of penicillamine in solution.  This salt is isolated by evaporation under reduced pressure and is converted into penicillamine by treatment with an alkali such as pyridine piperidine or guinoline.  In an example, a -acetamido-b  : b -dimethylacrylic acid is heated with thioacetic acid, the resultant a -acetamido-b -acet-thioisovaleric acid is hydrolysed by heating with a mixture of hydrochloric acid and acetic acid to give on evaporating to dryness dl-penicillamine hydrochloride, this is neutralized and reacted with mercuric chloride to precipitate the mercuric addition compound, treatment with hydrogen sulphide liberates penicillamine hydrochloride which is converted to the free base by reaction with pyridine and recrystallized from ethyl alcohol to give dl-penicillamine. Specification 16225/45 (as open to inspection under Sect. 91) is referred to.
Patent GB-906506-A (GB)
Title: Improvements relating to electromagnetic friction clutches
IPC: F16D27/115
Filed: 1959-02-27
Abstract: 906,506. Bearings. ZAHNRADFABRIK FRIEDRICHSHAFEN A.G. Feb. 27, 1959 [March 4, 1958], No. 7029/59. Class 12 (1). [Also in Groups XXIV and XXXV] A needle roller-bearing 6 and an axial thrustbearing 9 for mounting a stationary magnet 1 of an electromagnetic clutch (see Group XXIV) on a rotating shaft may be formed as two separate or a combined unit which, as shown, comprises rollers 6 rotatable in a cage between an inner sleeve 5 of non-magnetic material (e.g. bronze) fixed to the shaft 4, which sleeve carries a hardened steel race 7 or is coated with hard chrome, and an outer race 3 which is press-fitted within the magnet 1 and has an end flange 8 which forms the inner race of an axial roller bearing 9 the outer race 10 of which is fixed to the inner pole ring 11a. In clutches with low-bearing loads the rollers 6 may bear directly on the non-magnetic sleeve 5. In Fig. 4 (not shown), the needle rollers bear directly on the shaft and their cage is made of non-magnetic material (e.g. brass). In Fig. 7 (not shown), the needle and axial bearings are separate units. In Fig. 8 (not shown), the rollers 9 are replaced by balls.
Patent GB-893248-A (GB)
Title: Method of measuring the rate of flow of a pulverulent material suspended in a fluid
IPC: C21C5/34
Filed: 1959-03-02
Abstract: 893,248. Measuring rate of flow. INSTITUT DE RECHERCHES DE LA SIDERURGIE. March 2, 1959 [March 6, 1958], No. 7080/59. Class 69 (1). A method of measuring the rate of flow of a pulverulent material suspended in a fluid flowing in a circuit consists, for a predetermined rate of flow of fluid, in having at a predetermined point of the circuit located downstream with respect to pulverulent material introduction a constant pressure and in measuring the pressure at another predetermined point of the circuit located upstream with respect to pulverulent material introduction for obtaining, from a known ampirical relationship between such pressure and the rate of flow, the value of the rate of flow of the pulverulent material. As shown in Fig. 1, oxygen enters through a pipe 1 and the rate of flow is measured by a flowmeter 3, whilst its pressure is measured by a pressure gauge 4. The flow may be adjusted to the required value by a valve 2. Pulverulent lime is introduced into the pipe at the point 5 and a tuyere 7 injects the lime into a metal bath 8. The end 10 of the tuyere which discharges against atmospheric pressure thus forms the constant pressure point of the circuit. The reading on the pressure gauge 4 will enable the rate of flow of pulverulent material to be calculated. In the modification shown in Fig. 2 pulverulent material is fed into the circuit from feeding apparatus 11. Air is admitted through a pipe 12 and its pressure is indicated by a pressure gauge 13. To obtain a point which is under unvarying pressure a nozzle is introduced at 14, the size of which is such that it allows the fluid, when passing through its restricted cross-section to assume the speed of sound, taking into account the rate of flow of fluid passing through the pipe 12 and the maximum pressure on the downstream side of the nozzle. The air and solid particles are introduced into the main pipe 15 feeding the blast to a converter 16. In operation, a certain weight of pulverulent material is passed through the apparatus per minute and the rate of flow of oxygen or air adjusted to maintain the indication on the gauge 13 or 4 at a predetermined value which has been obtained in prior experiments as corresponding to the desired rate of flow of pulverulent material.
Patent GB-540612-A (GB)
Title: Improvements in or relating to the perforation of telegraph tape
IPC: H04L17/20
Filed: 1940-04-19
Abstract: 540,612. Telegraphy. CREED & CO., Ltd. April 19, 1940, No. 7098. Convention date, May 20, 1939. [Class 40 (iii)] [Also in Groups VIII and XVI] A telegraph tape has "lidded apertures ", i.e. partially severed embossed portions, 125, Figs, 8, 9, punched therein in accordance with a code ; the partially severed portions overlie the corresponding perforations so that a message may be printed on the same tape as shown in Fig. 7. Punching mechanism. - The die plate 105, Figs. 4, 5, 6 has a portion sheared off so as to leave the punched-out part attached to the main tape. Spring-loaded ejectors 109, Fig. 5, carried by the die plate, bring the " lids " 125 substantially into the plane of the tape to facilitate the feed of the tape between successive punching operations, additional means being provided for guiding the lids to facilitate reverse movement of the tape. Interponents 68, Fig. 4, selected by the combination mechanism of a printing telegraph receiver, or in known manner by the keys of a perforator, are moved by cam mechanism, Fig. 4, or by an electromagnet Fig. 16 (not shown) to force the selected punches 73 through the tape. A spring- pressed stripper member 102 and guide plate 98 are provided. The cradle 69 has a projection co-operating with a feed-hole punch to invariably perforate a feed hole at each operation. The feed-hole punch is slightly shorter than the code punches. A modified form of ejector is described, Figs. 14, 15 (not shown). Printing telegraph receiver.-The semicircular combination code bars 16, Fig. 1, set by a signle magnet 17 and known " sword-and-T " mechanism, select actuating bars 14 connected to the type bars 12 by gear and rack. The selected code bars 16 operate the corresponding interponents of the punching mechanism through bell-crank levers 56, vertical levers 58 pivoted at 59, bell-crank levers 61 pivoted at 62, and bell-crank levers 65 pivoted at 66. The platen 11, Fig. 4, is in the form of a cylindrical plunger fitting loosely in a block 99 and has a resilient printing surface so that it vibrates and rotates slightly at each printing stroke. The block 99 is slidably mounted on a shaft 100 so that it can be moved into " letters " or " figures " position by selecting special actuating bars by appropriate code signals. Specifications 274,448, [Class 40 (iii)], and 358,737 are referred to.
Patent GB-612017-A (GB)
Title: Improvements in and relating to magnetrons
IPC: H01J25/587
Filed: 1946-03-08
Abstract: 612,017. Magnetrons. BRITISH THOMSON-HOUSTON CO., Ltd. March 8, 1946, No. 7247. Convention date, Nov. 13, 1942. [Class 39 (i)]' In a magnetron of the type in which the polepieces are inside the metal envelope, the cathode is supplied with a D.C. potential and with heater current by a coaxial cable extending through a central bore in one of the polepieces. In the Figure, the conductors 32, 33 comprising the coaxial cable, which are preferably of nickel or molybdenum, are supported inside the bore by an insulator 39, the end of which projects beyond the pole face and is narrower than the bore. The outer conductor is connected to the cathode and one end of the heater, whilst the inner is connected to the other end of the heater. The cathode may be supported by an additional insulator 45 situated in a bore in the other polepiece. Small metal rings, preferably of nickel, may be provided between the insulators and the cathode to reduce heat conduction; the ends of the cathode may be shielded by discs 14, 15 larger in diameter than the bores, to prevent deposition of a conducting layer on the insulators. Spacing rings 22, 23 may be provided between the annular discs 24, 25, bearing on shoulders on the polepieces, and the anode block 4. The envelope 1 may be of cold-rolled steel and may be provided with cooling fins.
Patent GB-261604-A (GB)
Title: Cigarette packing machine
IPC: B65B19/08
Filed: 1926-03-16
Abstract: 261,604. Bõuml, M. March 16, 1926. Packeting cigarettes. - Relates to cigarette-packeting machines having partitions below the hopper adapted to receive vertical rows of cigarettes from which some are intermittently released for packeting while those above are kept back by retaining devices. According to the invention, the compartments containing the vertical rows are separated by intermediate spaces in which the retaining devices are arranged. When oval cigarettes are fed, means are provided for ensuring positive overlapping relation. As shown, two hoppers 2, 2', Figs. 1 and 2, are arranged at right angles to each other and are adapted to deliver cigarettes into receptacles 14 arranged on an intermittently rotating disc. A baffle plate 17 regulates the flow of cigarettes to a casing 16, Figs. 1 and 3, in which they enter into compartments 18 between slides 20 moving up and down in opposite directions and fall into compartments formed by partitions 56 in the receptacles 14, resting on ledges 54. In consequence of the thickness of the partitions separating the compartments 18, cigarettes are supplied only to the 2nd, 4th, 6th, 8th, and 10th compartments from the hopper 2. The receptacle 14 then moves beneath the hopper 2<1> and the remaining compartments are filled in a similar manner at position II, Fig. 2. At position III the contents are checked by suitable means and at position IV are released and fall into a case 58 on a rotating table 59. The release of the cigarettes from the compartments 18 is positively effected by means of levers 41, Fig. 3, normally projecting into the compartments and moved aside at the proper times, and the release of the cigarettes from the receptacles 14 into the cases 58 is caused by drawing apart the parts 42, 42<1> carrying the partitions 56 and ledges 54. When oval cigarettes are dealt with, the inclination of the parts 18, 56 causes them to assume an over-lapping arrangement in the case 58. In a modification shown in Fig. 8, the compartments 18 are vertical and the overlapping arrangement of the cigarettes is positively effected by channel-shaped members 60 actuated by levers 61 to move into an inclined position.
Patent GB-526045-A (GB)
Title: Improvements in and relating to vulcanizers for moulding tyres
IPC: B29D30/06
Filed: 1939-03-07
Abstract: 526,045. Moulding wheel tyres. BHIDGE & CO., Ltd., D. (National Rubber Machinery Co.). March 7, 1939, No. 7350. [Class 87 (ii)] Wheel tyres are stripped from the moulds, after vulcanization, by slight lateral movement of either upper or lower mould halves, or both, by power means, following initial opening of the moulds. As shown, the lower mould platform B may be moved laterally on slides C of a lever D, against the action of springs ; the upper mould platens E' may be moved on slides F of duplex fluid pressure mechanism G and rack gears H. According to the Provisional Specification, the stripping movement may be effected from the press mechanism, e.g. the lower moulds may be moved laterally through cam or rack gear or through lever or link mechanism assisted, if necessary, by springs; the upper moulds may be carried by support arms which are given a slight lateral movement immediately following the opening of the press.
Patent GB-550527-A (GB)
Title: Improvements relating to the control of direct current electric motors
IPC: H02P7/26
Filed: 1941-06-11
Abstract: 550,527. Rectifying. ELECTRIC CONSTRUCTION, CO., Ltd., and GLEDHILL, E. June 11, 1941, No. 7361. [Class 38 (ii)] [Also in Group XXXVII] A D.C. motor MA, Fig. 1, is fed from a rectifier 1 and its speed is controlled by rotation of a phase-shifter IS controlling the supply to the rectifier grids such as disclosed in Specification 550,387. The motor is accelerated -from rest upon closure of a switch PS by a torque motor 18, acting against a spring and a dashpot to rotate the phase shifter. A relay 5 controls the starting electrode, 3, and contacts 8 on the torque motor to ensure that the rectifier can only be ignited if the phase-shifter is in the minimum speed position. The controller, Fig. 2, includes in the casings 19 and IR the torque-motor and phase-shifter respectively. Rotation of the shaft 17 is limited by a V-shaped arm 31 fixed thereon embracing a fixed stop 33. The piston of the dash-pot D.P. is connected by a chain 22 to a sprocket in the shaft. The shaft 17 can be arrested at an intermediate speed position by a latch 35 engaging the stop of a snail cam 34, the angular position of the latch being adjusted by a hand-wheel 42, and being withdrawn from the stop of the cam by an electromagnet 46 which can be energized by a conveniently placed switch.
Patent GB-1394760-A (GB)
Title: Rivet setting tool
IPC: B21J15/36
Filed: 1973-02-14
Abstract: 1394760 Riveting E KUCH 14 Feb 1973 [23 Feb 1972 26 July 1972] 7366/73 Heading B3U A tool for setting tubular rivets comprises a threaded mandrel 4 mounted in a guide sleeve 3 carrying an anvil 9, a device 7 for releasably engaging the mandrel 4 to effect rotation thereof and a drive element 5 which is connected by articulated levers 6 to a pair of lever arms 1 so that when the latter are compressed the drive element 5 is moved relative to the guide sleeve 3 to drive the mandrel 4 inwardly of the anvil 9 so as to set a rivet which has been screwed on to the mandrel 4. The two lever arms 1 are articulated to a pair of transverse members 2 receiving the guide sleeve 3 for the threaded mandrel 4 and to the levers 6 which are in turn articulated to the drive element 5. An enlarged end 14 of the mandrel 4 co-operates with a shoulder 15 in the drive element 5 so that when the lever arms 1 are compressed the mandrel 4 is retracted by the drive element 5 moving over the guide sleeve 3 to set the rivet. The mandrel rotating device 7, which enables the mandrel 4 to be screwed into and out of the rivet is releasably secured to the drive element 5 by a nut 20 and which includes a projection 17 for engaging a notch 18 in the mandrel 4. The device 7 may be provided with a battery drive. The stroke of the lever arms 1 is controlled by the abutment of a sleeve 10, screwed in the drive element 5, with the transverse members 2. The anvil 9 of the tool is in screw threaded engagement with the guide sleeve 3 to enable the effective length of the mandrel 4 to be adjusted.
Patent GB-540689-A (GB)
Title: Improvements in mechanical feeding devices for finely divided substances
IPC: B65B1/10
Filed: 1940-04-24
Abstract: 540,689. Delivering material from hoppers. PORTER, G. S. April 24, 1940, No. 7372. [Class 78 (i)] A feed device for powdered or crystalline substances comprises a chamber a having mounted for rotation therein on a common axis a number of propellers e alternately of opposite pitch and set with the centre lines of the blades at right angles to one another, the extreme axial depth of the blades being such that the blades of adjacent propellers overlap at their widest parts e<SP>3</SP> to ensure a steady flow of the material from an inlet orifice a<SP>4</SP> to a discharge aperture a<SP>2</SP>. As shown, the inlet a<SP>4</SP> is connected to a hopper c and the outlet a<SP>2</SP>  may be connected to a metering device, chute or other element. The horizontal propeller shaft d is journalled in detachable covers at each end of the chamber.
Patent GB-1169331-A (GB)
Title: Method of Making Multiple Copies Using a Heat-Sensitive Master Sheet
IPC: B41M5/26
Filed: 1968-02-15
Abstract: 1,169,331. Printing process. NATIONAL CASH REGISTER CO. 15 Feb., 1968 [1 March, 1967 (3)], No. 7441/68. Heading B6C. A method of making a copy from a heat sensitive master sheet comprises the steps of moving a printing member in heat conductive relationship with a master sheet comprising a base having thereon a normally solidly, coloured coating which assumes tacky condition when heated to the tackifying temperature of the coating material and which remains in this tacky condition for a period of time after being cooled below the tackifying temperature heating the printing member to bring the coating in a tacky condition in areas corresponding to a heat pattern produced by the printing member, placing a copy sheet against the coated surface of the master sheet and applying sufficient pressure to cause a quantity of material from the tacky areas to adhere to the surface of the copy sheet, and, if required repeating the copying step using further copy sheets without further heat activation of the master sheet until the material in the tacky areas is depleted. In the drawing a print head 20 having a heatable impression surface 21, is located beneath a master sheet 22, supplied in the form of a web roller 23, to be fed over an idler roller 24 and the print head impression surface 21, around a feed roller 25, operating in conjunction with an idler roller 26 to form a pressure nip 27, and a second idler roller 28 to form a pressure nip 29, and finally over an idler roller 30 into a waste receptacle 31. The sheet 22 has a heatsoftenable coating 32, with a property of staying tacky for a period of minutes to hours after being heated to softened condition. This coating, in dry, solid state, is of the order of several thousandths of an inch in thickness, and preferably is black because of the carbon content. Copy paper supply rolls 33, which exhibit an ink-print-receiving propensity, and receiving rolls 34 are on axes parallel to the axis of the roll 23. The composition of the coating material may comprise a selection from the following constituents: hydrogenated rosin with a softening point range of 80-88 C. and an acid number of 8À0, glycerol ester of the above rosin, polyvinyl acetate copolymer, casein, P.V.A., plasticizer, carbon black, diazo dye, defoaming agent, surfactant, anti-blocking agent, chlorinated rubber, sodium silicate.
Patent GB-550591-A (GB)
Title: Improvements in quenched electric oscillation generators
IPC: H03K3/78
Filed: 1941-06-13
Abstract: 550,591. Valve generating circuits. MARCONI'S WIRELESS TELEGRAPH CO., Ltd., and PARKIN, T. D. June 13, 1941, No. 7523. [Class 40 (v)] A quenched oscillation generator comprises a valve having a condenser connected across the control-electrode-anode space by means of a parallel line circuit and a grid resistor connected across the control electrode/cathode space by means including one conductor or a part thereof of the parallel line circuit. The Figure shows a valve V associated with lines L, L<1> in which the grid resistor GR and condenser C are variable and a variable bias resistor BR is included in the cathode lead and may serve for taking off the pulse oscillations. The parallel line circuit may be replaced by a co-axial line circuit with either the inner or the outer conductor connected to the control-electrode. The system may be enclosed in a metal cylinder to avoid interference and may be used to control a further self-oscillator. The positions on the line circuit at which the grid resistor and the anode supply are connected may be variable.
Patent GB-1353478-A (GB)
Title: Resin fibrous article and method of making same
Inventor: ACKLEY RICHARD H
IPC: B29C70/08
Filed: 1971-03-22
Abstract: 1353478 Glass fibre-resin laminates; moulding PPG INDUSTRIES Inc 22 March 1971 [25 March 1970] 7523/71 Headings B5N and B5A [Also in Division D1] A stampable reinforced thermoplastic sheet product comprises a mat (A) of fibrous glass strands and a mat (B) of unstranded glass filaments (including mats composed of strands of up to 10 filaments) disposed contiguously to each other, the unstranded filaments and fibrous strands being free to move relative to each other when the resin is in a flowable state. The strands and filaments in each mat may be of staple or continuous length and may be randomly oriented. Mat (A) may be a swirl mat or a chopped strand mat and mat (B) may be made by chopping a crimped roving or tow and carding and lapping the unstranded filaments. Various combinations including a plurality of mats (A) and/or (B) are disclosed. Preferably mats (A) and (B) are free of chemical binder but the assembly may include chemically-bonded strand mats, e.g. bonded with acrylic binder. The mats (A) and (B) may be individually needled or may be needled together before assembly. In examples, the assembled mats are interleaved with thermoplastic resin sheets and the stampable article is made by applying heat and pressure in a laminating press to cause the resin to impregnate the mats. The resin is preferably polypropylene or styrene-acrylonitrile, but may be a vinyl halide polymer, another polyolefin, phenoxy resin, polyamide, polysulphone, polycarbonate, polyacetal, polyethylene oxide, a styrene polymer, acrylic resin, neoprene, polyphenylene oxide resin or cellulose ester. It may alternatively be applied by doctoring or extrusion. The article may be stamped to a desired shape by preparing a blank from the above sheet, preheating the blank (e.g. to 400 F. in an infra-red oven) and placing it in a mould at 60-100 F. which is then rapidly closed. A striking force of 300-2000 p.s.i. may be applied in cycles of 10- 60 seconds. Boxes and automobile roof panels may be produced.