baber/WOPTO huggingface dataset:
Patent GB-664223-A (GB)
Title: Improvements in or relating to apparatus using photographic roll-film
IPC: G03B19/04
Filed: 1949-10-19
Abstract: 664,223. Photographic roll-film cameras. KODAK, Ltd. Oct. 19, 1949 [Oct. 19, 1948], No. 26844/49. Classes 97 (i) and 98 (i). In apparatus using photographic roll-film, such as a photographic camera or a film-strip projector, having a film supply chamber and a take-up chamber spaced apart on. opposite sides of an exposure frame or film gate, means being provided by which a film strip inserted in the supply chamber may be propelled through a film guideway across the film gate to the takeup chamber, where it is coiled before return to the supply chamber for removal from the apparatus, the take-up chamber has a pair of opposite end walls spaced apart to receive a film therebetween, one end wall being fixed and the other movable towards or away from the fixed wall, and one of the two end walls including an inclined portion which, when a film is fed into the chamber, engages an edge of the film to guide the latter into a coil in the take-up chamber in such manner that the coil is supported solely by the edges of the film. As shown, Fig. I, a photographic camera has supply and take-up spools 2, 3. The film is coiled in a cassette 10 with a spindle 11 which, when turned by an external winding knob, moves the film F out of the cassette, across the film gate 4 in a guide 7, and through a slot 16 into the take-up chamber 3. Chamber 3 is cylindrical in form and has a fixed end wall 20, Fig. 3, and a movable conical cap 19. Projections 22, 23 of cap 19 ride in slots 24, 25 in chamber 3 so that cap 19 is movable axially, without rotation, against action of a light spring 21 tending to press cap 19 against a shoulder 27 formed in chamber 3. The film entering chamber 3 through slot 16 and a slot 18 in cap 19 is formed into a coil, the edge of the outer coil only bearing on the cap. As the coil becomes larger, the cap is moved against action of spring 21.
Patent GB-1303913-A (GB)
IPC: H01F17/00
Filed: 1971-04-19
Abstract: 1303913 Inductors RCA CORPORATION 19 April 1971 [20 April 1970] 26889/71 Heading HIT An inductor for a thick-film hybrid circuit comprises a ceramic substrate 2, a ferromagnetic (e.g. ferrite) layer 8, a pattern of conductors 12 and a ferromagnetic covering layer 14, the ferromagnetic layer and the conductors consist of particles in an epoxy resin binder. In one embodiment the sintered powdered ferrite comprises (by weight) 10% NiO, 6% ZnO, 1% MnO and 83% Fe 2 O 3 ; the connectors 4, 6 and conductors comprise 4 parts silver powder to 1 part binder, both the ferrite and the metal being deposited by screen printing. The binder is heat cured after each step. Modifications include omitting the top ferrite layer, using composite multiple layers instead of single layers, depositing a second spiral on layer 14 and another ferrite layer on that, depositing the first ferrite layer in a shaped recess, and having an annular core (Fig. 10).
Patent GB-1186565-A (GB)
Title: Process for the Recovery of Essentially Pure Amorphous Polyolefins
IPC: C08F6/04
Filed: 1967-06-12
Abstract: 1,186,565. Fractionating alpha-olefin polymers. SUN OIL CO. 12 June, 1967 [17 June, 1966], No. 26969/67. Heading C3P. Substantially pure amorphous alpha-olefin polymers are recovered from a saturated hydrocarbon solution containing 0À1 to 10 per cent by weight of a mixture of amorphous, stereoblock and crystalline alpha-olefin polymers by (a) heating and concentrating the dilute polymersolvent solution by distilling off solvent to a concentration of from 10 to 40 weight per cent polymer in solution, (b) cooling the concentrated solution to a temperature of from 15‹ to 30‹ C., (c) centrifuging the cooled solution and recovering a filtrate substantially free of crystalline polymer, (d) diluting the centrifuged filtrate with hydrocarbon solvent to a polymer in solvent concentration of from 5 to 15 weight per cent polymer, (e) filtering the resulting diluted centrifuge filtrate and recovering an amorphous alpha-olefin polymer solution substantially free of stereoblock polymer and (f) recovering from the last-mentioned solution a substantially pure amorphous alpha-polymer. The above starting solution is obtained from a polymerization process using a Ziegler-Natta-type catalyst after the polymerizate has been treated to recover from it the hexane insoluble fraction i.e. the crystalline or isotactic fraction. The preferred polymers are polypropylene and copolymers of ethylene and propylene. A flow diagram is given of a continuous method for recovering substantially pure amorphous alphaolefin polymers.
Patent GB-273139-A (GB)
Title: Machine for rounding off or bevelling edges of glass or like articles
IPC: B24B9/10
Filed: 1926-10-28
Abstract: 273,139. Liebl, F. Oct. 28, 1926. Bevelling; lenses, grinding and polishing.- The edges of glass &c. articles are bevelled or rounded by means of a grinding-wheel 4 rotating: on a stationary axis, the work 23 being rotated, at variable speed according to the curvature of the glass &c. edge, in contact with the grinding- wheel. A vertical slotted spindle 10 is driven through gearing 5, 7, 9 from the grinding-wheel shaft, and on the spindle is freely mounted an arm 13 adjustable by a screw 14. The arm has hinged thereto at 15 an arm 16, in which is rotatable a member carrying a normally vertical shaft 16, 17, on which is mounted a pulley 20 of shape corresponding to that of the work, for example, elliptical. The pulley is driven by a belt from a pulley 21 on the shaft 10, the belt passing also over tensioning pulleys 22, 23; by this means, the work rotates more rapidly when parts of large curvature are being ground. The work is held by a holder, Fig. 4, consisting of an adjustable block 28 and a slidable block 27 carried by a plate 24, the block 27 being moved to grip the work by springs 30, and retracted by a lever 33, 34.
Patent GB-164274-A (GB)
Title: Improvements in apparatus for sterilizing liquids
IPC: A23L3/005
Filed: 1920-09-22
Abstract: 164,274. Rudd, H. B. Sept. 22, 1920. Sterilizing milk &c.-Apparatus for sterilizing liquids, especially milk, by the action of an electric current, preferably an alternating current of about 220 volts, is provided with thermostatically operated means for controlling the passage of the liquid treated and with means for cooling the electrodes. The preheated liquid enters a chamber 14 at the top of the apparatus which it leaves through a pipe 19 controlled by a valve 17 operated by a thermostatic device 16 arranged at about the required liquid level. From the pipe 19 the liquid passes upwards through a chamber 10, two sides of which are formed by insulating partitions 28, 29 and the other two by the electrodes 26, 27, the partitions and electrodes being held in grooves in top and bottom plates 23, 24. The electrodes are fitted in copper frames to which current is supplied through conductors 32, 33 and cross bars 30<a>. From the chamber 10 the liquid passes to a chamber 20 the escape from which is controlled by a thermostatic valve 20<b>. Cooling liquid is supplied by a pipe 38 to spaces between the electrodes and plates 36 and 37, escaping through openings 42, 43 in the plates 36, 37 and overflow pipes 39. The apparatus is supported on a hollow trunnion, through which passes the pipe 38, so that it can be tilted for cleansing, being normally held in a vertical position by a spring latch 12.
Patent GB-824579-A (GB)
Title: Uranium and zirconium recovery as uranium hexafluoride and zirconium fluoride from alloys containing these elements
IPC: C01G25/04
Filed: 1957-08-28
Abstract: <PICT:0824579/III/1> Fluorides of uranium and zirconium are prepared by dissolving a uranium-zirconium alloy in a molten zirconium tetrafluoride-sodium fluoride mixture and treating the molten mixture with a gaseous fluorinating agent.  Zirconium fluoride remains in the melt and uranium hexafluoride; together with fluorides of niobium and ruthenium, for example, are volatilized.  Equimolar amounts of zirconium and sodium fluoride are preferably employed and the temperature is normally between 500 DEG  and 600 DEG  C.  Suitable fluorinating agents are bromine penta- and trichloride, chlorine trifluoride and fluorine.  Alternatively a two-stage fluorination may be effected whereby the alloy in the molten fluoride bath is first treated with hydrogen fluoride at 500-800 DEG  C. to form uranium and zirconium tetrafluorides and the bath is then treated with the above mentioned fluorinating agents to produce and volatilize uranium hexafluoride.  If fluorine is employed to form the uranium hexafluoride from the tetrafluoride, lead fluoride may be added to the melt in an amount of about 5 mol. per cent.  The fluorine may then be diluted with an inert gas such as helium. The apparatus may be as shown in the Figure where a refractory furnace 1 is provided with a nickel insert vessel 4 which contains the molten salt mixture 8.  The alloy 9 is placed in the melt and hydrogen fluoride is passed in from line 12 thereby dissolving the alloy to form tetrafluorides. Excess hydrogen fluoride is collected in cold traps 17 and 18 and thereafter fresh traps are connected and bromine pentafluoride passed through the melt. Uranium hexafluoride and excess bromine pentafluoride and bromine trifluoride reaction products were condensed in condensers 17 and 18 whilst niobium and ruthenium condensed in the earlier portions of the pipe 16.  The uranium hexafluoride condensate was freed from bromine compounds by passing fluorine gas through the condensate to convert bromine compounds to the pentafluoride which may be distilled off at 45 DEG  C.  The decontaminated uranium hexafluoride may be further purified by vaporizing it and passing the vapour thereof over a bed of solid sodium fluoride at 100-400 DEG  C.
Patent GB-1155592-A (GB)
Title: Improvements in and relating to Vehicle Hydraulic Braking Systems
Inventor: FARR GLYN PHILLIP REGINALD
IPC: F16D55/228
Filed: 1965-06-26
Abstract: 1,155,592. Hydraulically actuated disc brakes. GIRLING Ltd. 23 July, 1966 [26 June, 1965], No. 27179/65. Headings F2E and F2F. In a motor vehicle hydraulic braking system employing a master cylinder, a servo arrangement is provided by which a servo pressure, produced by a piston and cylinder arranged within a brake having an hydraulic actuator supplied by the master cylinder, is applied to the master cylinder piston in the brake applying direction. The brake is preferably a disc brake which, as shown in Fig. 4, comprises a generally U-shaped caliper 10 straddling a brake disc and carrying friction elements attached to pistons which work in a pair of cylinders 24 one cylinder on each side of the brake disc (Fig. 1, not shown). The limbs of the caliper are of unequal length (Fig. 2, not shown), the longer limb being bifurcated and being mounted on, for limited relative movement to a fixed post 38. The mounting means comprises a pivot pin 40 which is provided at one end with a plug 42 to co-operate with a spring-biased piston 44 in an hydraulic cylinder 35 of the caliper. The pivot pin 40 is urged in a direction away from the cylinder 35 by attaching to its other end a spring-loaded bolt 52. When the brake is actuated the caliper is urged in a direction to compress the springs which co-operate with the bolt 52 thus urging the plug 42 against the piston 44 and hence increasing the pressure in the cylinder 35. This increased pressure is fed to an annular chamber 111 Fig. 5, in the master cylinder 74 to increase the braking pressure. When the master cylinder 74 is inoperative its working chamber 110 is in communication with a reservoir (not shown) through a valve 86, 90, ports 92, a tilting valve 100 and a passage 98. Actuation of the master cylinder by push rod 76 closes valve 86, 90 and allows the tilting valve to close. The hydraulic connection 142 between the annular chamber 111 and the cylinders 35 of two brakes as described above includes a pressure compensator 130 having inputs 126, 148 from the respective cylinders 35 and a connection 154 to atmosphere, or to the fluid reservoir. The compensator provides hydraulic fluid to compensate for the volume increase in the chamber 111 when the piston 72 is actuated, prior to the establishment of a servo pressure in the connection 142. The brake may also be actuated by a mechanically or hydraulically operated lever through a thrust member of adjustable length, the thrust member acting on one friction member only.
Patent GB-860474-A (GB)
Title: An improved means of attaching a broom head to a handle
IPC: B25G3/00
Filed: 1958-08-25
Abstract: 860,474. Brushes; squeegees; handle fixings. CLARES (WELLS) Ltd., and YATES, D. Nov. 20, 1959 [Aug. 25, 1958], No. 27208/58. Classes 19, and 61. In a two part clamp for attaching a broom head to its handle, one part comprises a bowed body 14 fitting the head, provided with a tube 20 formed with apertures 21 for water, a nose 22 for the reception of a hose 23 and a split socket 15 for the reception of the handle, the second part 27 having a flange for engagement with the head. The parts are detachably secured together around the head of the broom by a tightening screw 25 and nut 26. The part 14 has an inwardly turned flange similar to the flange on the part 27. The split socket 15 has ears through which pass a tightening screw 18 for a flynut, 19. Integral with the tube 20 is a scraper 24.
Patent GB-1270267-A (GB)
Title: System for storing and distributing a liquid under pressure
Inventor: CHARLATTE MAURICE
IPC: E03B11/06
Filed: 1969-05-29
Abstract: 1,270,267. Water supplies. M. CHARLATTE. 29 May, 1969 [5 June, 1968], No. 27291/69. Heading E1X. [Also in Division F1] A water storage and distributing system comprises an inflatable storage bladder 3 supplied with water through a connection 4, a gasfilled casing 1 enclosing the bladder, and a pressure switch 7 responsive to the gas pressure and operable to control the water supply to the bladder. The casing 1 has cover plates 2 and a gas valve 6. A level indicator tube 9 extends from the connection 4.
Patent GB-837190-A (GB)
Title: Improvements in mechanically operated presses
IPC: B30B15/12
Filed: 1958-08-27
Abstract: 837,190. Mechanical presses. SCHOSTAL S. A. Aug. 27, 1958 [Sept. 13, 1957], No. 27474/58. Class 87(2). [Also in Groups XXII, XXIV and XXXIV]. A mechanical press has its slide block 2 driven through a connecting rod 5 by a crank shaft 3 to which is secured a plate 22, Fig. 2, carrying rotatably mounted planet gears 20 meshing with a stationary outer gear ring 23 and with a central driving pinion 17. The latter is connected to a clutch plate 15 working between driving plates 10, 12 biased apart by springs 14 and pulled into clutch-engaged position by an electro-magnet 11, carried by the main driving pulley 9. In another embodiment, Fig. 5, the driving plate 33 is actuated by pressure fluid acting on a diaphragm 32. Alternatively a mechanically actuated clutch may be used. The opposite end of the crank shaft 3.carries a braking disc 62, Fig. 10, working between non-roatry plates 65, 66, biased together by springs 73, Fig. 9 (not shown), and pulled apart by pressure fluid admitted to chambers 82 and acting on movable plates 74, 75, connected by pins 83 to the respective plates 65, 66. The press slide 2 may carry detachable guides 29 and is coupled to its connecting rod 5 by an eccentrically mounted gudgeon pin 6 which is rotatable by a worm 26 for varying the stroke position of the slide. An ejector rod 8 of variable stroke operates through the press table 7.
Patent GB-316276-A (GB)
Title: A process for the surface treatment of celluloid articles to render the same practically uninflammable
IPC: C08J7/04
Filed: 1928-09-25
Abstract: 316,276. Weber, A., H÷ppner, H., and Weich, H. July 27, 1928, [Convention date]. Celluloid, treatment of.-Celluloid is rendered less inflammable by treatment of the surface with a solution of acetate celluloid in acetone and amyl acetate. Lac dissolved in alcohol mav be added to produce a gloss. In an example, 500 gm of acetate celluloid are dissolved in 1500-2000 gm of acetone to which 100 gm of amyl acetate has been added. 100-125 gm of varnish or shellac dissolved in alcohol is added and the whole is diluted as required with acetone or amyl acetate. The coating may be applied by immersion, spraying &c. The Specification as open to inspection under Sect. 91 (3) (a) comprises treatment with a solution of any practically uninflammable substance in a solvent for celluloid. This subjectmatter does not appear in the Specification as accepted.
Patent GB-1116237-A (GB)
Title: Crimping apparatus
IPC: D02G1/12
Filed: 1965-10-14
Abstract: In a stuffer-box crimping apparatus such as described in the parent Specification, the drive for a roller feeding yarn into the compression chamber is automatically connected and disconnected periodically so as to maintain the quantity of yarn in the chamber constant.  A flywheel, mounted to rotate with the feed roller, retards the deceleration thereof during the periods when the drive is disconnected.
Patent GB-694635-A (GB)
Title: Improvements in oil control means for relatively reciprocating bodies
IPC: F16J9/20
Filed: 1949-10-27
Abstract: 694,635. Pistons. NAAMLOOZE VENNOOTSCHAP PHILIPS' GLOEILAMPENFABRIEKEN. Oct. 27, 1949 [Oct. 30, 1948], No. 27577/49. Class 122(i) [Also in Group XXXIV] In lubricant control means for two relatively reciprocating bodies J, K, of which parts of adjacent relatively reciprocating surfaces are separated by a space of small cross section intended to contain lubricant and in which a further part F, H of the surface on the body J, is required to be kept substantially free from lubricant, the surface of the body J is interrupted at a region thereof in proximity to the part F, H, by a slot of U- or V-section, the slot being disposed so as to intercept the flow of oil to the part F, H, and the side walls of the slot forming acute angles with the part F, H, so that when viewed in a direction F, B into the body J, they slope towards the part F, H, the adjacent surface part on the body J being kept at a distance from the adjacent surface part on the body K less than the distance of the part F, H, from the adjacent surface on the body K. The body J may have succeeding parallel slots separating further parts spaced from the body K by increasing distances in the direction F, H. The specification describes the invention as applied to a piston in a cylinder and to a shaft reciprocating in a guide. A piston may have control slots at each end or at the head end and also at an intermediate point between the rings. The bottom of the slot may form a capillary slit.
Patent GB-853025-A (GB)
Title: Improvements in and relating to the control of electric winder drives
Inventor: GOODALL JAMES
IPC: B66B1/06
Filed: 1956-09-11
Abstract: 853,025. Control of A.C. motors. METROPOLITAN-VICKERS ELECTRICAL CO. Ltd. Sept. 5, 1957 [Sept. 11, 1956], No. 27767/56. Class 38 (3). Automatic operation of a winder motor DEM is effected when a change-over switch COS is engaged with contacts A, so that the coil of a brake-thruster SBT receives full voltage from the stator circuit of the motor and the brake is released, provided that contacts 4a-4c, 5f-5d are closed. When a cam-operated limit switch is operated, an auto-transformer SDT is placed in circuit with the thruster coil, thereby gently applying the brake to retard the winder motor and, at the same time, additional resistance is introduced into the rotor circuit of the motor. Thereafter, another limit switch is operated to change the thruster-coil connections from the stator circuit to the rotor circuit, thus providing a steady creeping speed since the braking torque is automatically increased if the motor speed increases. Eventually, a final limit switch cuts off the supplies to the motor and to the thruster, and the winder is stopped in a predetermined position. An emergency brake thruster EBT is energized through a safety contactor 1, and, for manual control, the coil of the thruster SBT is connected through contacts M to the supply circuit. In another arrangement, the transformer SDT is dispensed with, and the thruster SBT is replaced by two thrusters, the coils of one or both thrusters being energizable either from the stator or rotor circuits of the motor, Fig. 2 (not shown). This selection is dependent upon operating conditions as determined by a reverse power relay, which detects whether the motor is drawing power from the supply line or is regenerating, and by a load-measuring relay, supplied in accordance with the stator current of the motor and effective during both motoring and regenerating operations. Thus, when deceleration is to begin, a limit switch causes operation of one or both brakes, as required by the operation of the reverse-power and loadmeasuring relays. Later in the operating cycle, another switch of similar kind causes actuation of the second brake if it had not been operated in the first instance.
Patent GB-1330598-A (GB)
Title: Process for the preparation of oxirane compounds
IPC: C07D303/04
Filed: 1972-06-14
Abstract: 1330598 Preparation of oxirane compounds SHELL INTERNATIONALE RESEARCH MAATSCHAPPIJ NV 14 June 1972 [16 June 1971] 27821/72 Heading C2C [Also in Division C3] Oxirane compounds are prepared by reacting, substantially in a non-gaseous phase, an olefinically unsaturated compound with an organic hydroperoxide in the presence of a polyorganotitanosiloxane polymer as catalyst. The amount of polyorganotitanosiloxane polymer may be in the range of from 0À001% to 100% by weight based on the organic hydroperoxide. The molar ratio of olefinically unsaturated compound to organic hydroperoxide may be in the range of from 50 : 1 to 1 : 10. The reaction between the olefinically unsaturated compound and the organic hydroperoxide may be carried out at a temperature between 0‹ and 200‹ C.
Patent GB-1464097-A (GB)
Title: Method and means for finishing an aperture
IPC: B24B31/116
Filed: 1974-06-10
Abstract: 1464097 Abrading E G FELDCAMP 10 June 1974 [12 June 1973] 27825/73 Heading B3D The subject matter of the present Specification is substantially identical with that of Specification 1,464,096 but the main claims are directed to a method of finishing an aperture in a component by forcing an abrasive compound through the aperture against a controlled back pressure and to means for carrying out the method. The back pressure may be maintained at a constant value or proportional to the force applied to the abrasive compound and may be achieved by a flow restrictor downstream of the aperture in the component.
Patent GB-509489-A (GB)
Title: Improvements in maps
IPC: G09B29/02
Filed: 1937-10-13
Abstract: 509,489. Maps. HELLRIGL, K. Oct. 13, 1937, No. 27909. Void. Convention date, Oct. 15, 1936. [Class 146 (ii)] A map is divided into a number of sections of equal size which are then divided into strips, the corresponding strips being arranged in piles, and the strips of each section are connected together so that they can be exposed when required. The strips 2, Fig. 2, of any mapsection are attached to bars 2A, which themselves project at one end from a closed casing, or are secured to cross-bars 2B, Fig. 4, projecting from the casing, the strips of the other sections being similarly mounted on corresponding bars. The outer bars 1A may be fixed in the casing. Other bars may be secured at the back of the bars 2A to carry other strips visible from the back of the device. By raising any of the bars in the casing the corresponding strips are raised to view.