baber/WOPTO huggingface dataset:
Patent GB-870139-A (GB)
Title: Diaphragm control for photographic cameras
IPC: G03B7/085
Filed: 1957-09-16
Abstract: 870,139. Photo-electric camera diaphragm control. BELL & HOWELL CO. Sept. 16, 1957 [Aug. 13, 1957], No. 29056/57. Class 40(3) [Also in Group XX] A photographic camera comprises motor means driven by a photo-electric cell against spring means and rotative diaphragm members, the said members being coupled to said motor means, having arcuate openings moving in overlapping relationship in front of an exposure aperture, being balanced about their respective axes, and forming a, or part of a, rotative system in which the rotative inertias of the various members are balanced. As shown, a kinematographic camera has a photo-cell 23 mounted on its front face 6 below the objective lens 15 and behind a honeycomb baffle 25 having a manually operable shutter 41 for controlling the light receiving area of the cell. The photo-cell has one electrode 31 earthed and the other 32 connected through temperature compensating resistors 33, 34 to one end of a wound rotatable armature 20 of a galvanometer 17, the other end of which is earthed at 36. The coil 20 rotates about an axis parallel to that of the objective 15 and in the field of a permanent magnet 7 such that light incident on cell 21 sets up a current which causes the coil 20 to rotate against spring force through an angle proportional to the light intensity. The coil 20 is attached to a coaxial gear 59 which in turn engages each of a pair of diaphragm discs -cf. Specification 870,140-pivoted about parallel axes through 56 and having arcuate slots 61 which overlap in the region between the back of the objective 15 and the film exposure gate. The slots 61 are of tapering shape such as to form a substantially rectangular stop the dimensions of which vary according to the light intensity, and terminate in large areas 63 which allow of the maximum aperture. For eliminating the automatic control of the aperture, a manually operable knob 89-cf. Specification 870,141-is provided which actuates a lever 94 which engages a projecting member 64 of the coil 20 such that rotation of the knob 89 is accompanied by rotation of the coil 20 and hence variation of the aperture; during manual operation the photo-cell current is short circuited by means of switch 37 which is closed by means of a disc 98 having a conducting portion which engages an earthed conductor member 100 attached to the knob 89 upon actuation of the latter. A pointer 65 connected to the coil 20 provides a visible indication of the aperture setting on the outside of the camera housing. A view finder is provided with a viewing window 72 at the top of the camera and a light-transmitting member 78-cf. Specification 870,142-having a window 76 normal to the direction of the axis of the objective 15. A blocking member 85 attached to the coil 20 covers the window when maximum aperture is reached.
Patent GB-415602-A (GB)
Title: Improvements in and relating to the purification of titanium pigments
IPC: C01G23/047
Filed: 1933-10-23
Abstract: Titanium pigments, for instance precipitated titanium oxide with or without an extender such as barium sulphate, are purified by mixing with carbonaceous material and, prior to calcination, baking the mixture at temperatures of 200--400 DEG  C. for a period of one hour or more.  Sugar, dextrine, starch, or fuel oil is advantageously used as the carbonaceous material, in amounts of from 2\ba1/2\be to 10 per cent by weight of the pigment. Following the baking step, calcination at 750--900 DEG  C. may be effected in the same oven, with the addition if desired of a small amount of a salt such as sodium sulphate or sodium carbonate.
Patent GB-676986-A (GB)
Title: An improved resilient wheel
IPC: B60B9/26
Filed: 1949-11-16
Abstract: 676,986. Coupling rotary parts together. CATLEY RESILIENT WHEEL (OVERSEAS), Ltd. Nov. 16, 1949 [Nov. 19, 1948; May 11, 1949], Nos. 29356/49 and 29357/49. Class 80 (ii). [Also in Group XXXIV] A resilient wheel or pulley comprises curved metal springs connected (directly or otherwise) at their outer ends to the rim, their inner ends being wound around 'one another and a central sleeve or hub-member. As shown in Fig. 1, a wheel suitable for use on scooters, perambulators, or the like, comprises springs 4 connected to brakes 7 on the tyre-carrying rim 2, and tightly wound around a hub 1 so as to be secured without extraneous holding-means. In the modification shown in Fig. 4, the inner ends of the springs engage slots 9 in the hub 8 which is fitted with fixed and removable end-flanges. Fig. 8 shows a further modification in which the spring-supporting hub-ring 15 is connected to the tyre-carrying rim 17 by wire spokes 16.
Patent GB-1140268-A (GB)
Title: Improvements in or relating to rotary fluid pumps
IPC: F04C2/14
Filed: 1966-06-30
Abstract: 1,140,268. Rotary fluid-pumps. M. TUROLLA. June 30, 1966 [July 1, 1965 (2); Aug. 9, 1965], No.29427/66. Heading F1F. In a pressure-loaded rotary fluid-pump of the externally-meshing gear type, a wear-plate or cheek-plate 6 for the pumping gears 4, 5 is clamped between a central portion 3 of a housing or casing and an end cover 2 therefor, the flexibility of the portion of said plate abutting the gears being increased by an annular groove 15 in the face of the plate that is remote from the gears, the profile of which groove, Fig. 2 (not shown), is substantially similar to that of the pumping gears. The aforesaid portion of the plate 6 is pressed against the adjacent side faces of the gears by the pressure of fluid entering said groove and a shallow recess or depression 16 contiguous thereto from the high-pressure side of the gears, the profile of said recess being substantially that of a figure-of-eight. Fluid on the highpressure side of the gears has access to the groove 15 and the recess 16 through a cavity 17 and an axial bore 18 in the wear-plate. The groove 15 and recess 16 are sealed by rings 13, 14 that are lodged in the end cover 2. A spindle 204 attached to the gear 4 is coupled to a driving shaft 20 that is supported by a ball bearing 25 in a portion 21 of the housing, there being splines formed on the wall of a bore 26 in said shaft that engage with splines formed on a sleeve 27 attached to the spindle 204. In a modification, Figs. 5 to 8 (not shown), the groove 15 has a profile substantially similar to that of a figure-of-three, the central portion of the groove on the high-pressure side of the gears being replaced by a curvilinear slot or slit (35), which gives fluid across to the recess 16. In the embodiment shown in Fig. 1, the depth of the groove 15 varies and is greatest on the high-pressure side of the gears, Figs.3 and 4 (not shown), so that the flexibility of the portion of the plate 6 abutting the gears varies accordingly and the pressure exerted on the gears by said plate matches the pressure gradient of fluid lodged in the gear-tooth spaces. A similar provision is made in the pump according to Figs. 5 to 8 and the required variation in the flexibility of the plate 6 is facilitated by the slot (35) therein, Fig. 10 (not shown). It is indicated that the pump may be provided with two wear-plates with the gears situated therebetween, each plate being provided with a groove 15 and a slot (35).
Patent GB-700399-A (GB)
Title: Improvements in trimming pneumatic tyre covers
Inventor: SMITH HAROLD
IPC: B29C37/02
Filed: 1951-12-17
Abstract: 700,399. Trimming moulded tyre covers. DUNLOP RUBBER CO., Ltd. Nov. 7, 1952 [Dec. 17, 1951], No. 29435/51. Class 87 (2) A machine for trimming moulding flash from a moulded tyre cover comprises three multibladed cylindrical trimming knives 14 two of which, those engaging the side walls of the cover, are adjustably secured to spring-biased rods 50 pivoted respectively to a crank 51 and to one arm of a bell-crank 55 which are secured to rotatably-mounted shafts 52 connected by means of cranks 57 and a connecting rod 58, and the third of which, that contacting the tread portion, is adjustably secured to a weighted rod 54 pivoted to the other arm of the bell-crank 55, one of the shafts 52 being operated by means of a weighted hand lever 59 or by mechanism driven in timed relationship with the rotation of the tyre cover. The latter is supported on a pair of driven double frusto-conical rollers 1, and a roller 11 rotatably mounted on a pair of weighted pivotally mounted arms 12 bears on the upper portion of the tyre cover. Each knife comprises a rotatable annular base portion 20, Fig. 3, provided with tapering double-edged blades 24 which are set over and chamfered at their ends.
Patent GB-882010-A (GB)
Title: Projection display apparatus
Inventor: MILLER WILLIAM N
IPC: G09F19/18
Filed: 1960-08-26
Abstract: 882,010. Sound-and-picture display apparatus. SHOP-O-RAMA Inc. Aug. 26, 1960, No. 29505/60. Class 40 (2). [Also in Group XX] A ceiling-mounted sound-and-picture shop advertising display apparatus 10 comprises a square box containing four pairs of magazine slide projectors 35, 45 displaying alternately advertising matter or " lucky numbers " respectively on back-projection screens 17. Baffles 50, 51 prevent rear illumination of the screens other than by the projectors. The advertising magazines are indexed by signals on a magnetic tape, carrying an associated sound commentary; the number magazines are indexed at random intervals by a clock which also energizes a relay for brief periods to switch off the lamps in the advertising projectors and switch on the lamps in the number projectors. The numbers may be associated with the numbers of trolleys used in a self-service store to award prizes.
Patent GB-1134420-A (GB)
Title: Improvements in electric switch-socket outlets
Inventor: BUTCHER ERIC JAMES
IPC: H01H23/14
Filed: 1966-06-30
Abstract: 1,134,420. Switch socket outlets. J. A. CRABTREE & CO. Ltd. 20 June, 1967 [30 June, 1966], No. 29546/66. Addition to 1,060,579. Heading H2E. [Also in Division H1] In one modification of the rocker-operated switch socket of Specification 1,060,579, the rocker 1 is disposed in a rectangular recess 5a so as not to project beyond the plane of the plate 3 in both the " on " and " off " positions. In a further modification (Figs. 4, 5, not shown), the rocker (1) lies between projections (6) on the front surface of the plate. In a third modification (Figs. 6, 7, not shown) the rocker (8) has two obtusely disposed flat surfaces (8a, 8b) and is pivotal in a two-part recess (9, 9a) in the front plate.
Patent GB-1017600-A (GB)
Title: Improvements in or relating to information storage devices
Inventor: JAMES JOHN BERNARD
IPC: G11C8/00
Filed: 1962-08-01
Abstract: 1,017,600. Electric digital date-storage. INTERNATIONAL COMPUTERS & TABULATORS Ltd. July 16, 1963 [Aug. 1, 1962], No. 29553/62. Heading G4C. A random-access data store has means controlled by address signals for (a) selecting the timing of operating signals used to effect a read and/or write operation and (b) selecting the storage location at which the operating signals are to be effective. Fig. 2 (not shown) shows the reading and writing arrangement which compensates for circuit delays in the digit conductors each of which passes through the whole store. The required address is decoded to select (but not operate) X and Y drivers of the store. For writing, a write pulse from a control unit gates input data to the digit conductors, and is also selectively delayed in accordance with the (decoded) address before operating the selected X and Y drivers to cause writing. For reading, a read pulse from the control unit is selectively delayed in accordance with the (decoded) address and then operates the selected X and Y drivers. The read pulse is also, after passing through a fixed delay, used to strobe the output from the store. As a modification, the strobe pulse rather than the pulse which operates the drivers may be selectively delayed in accordance with the address. Fig. 1 (not shown) shows the construction of the store.
Patent GB-1343450-A (GB)
Title: Wire-drawing machine
IPC: B21C47/00
Filed: 1971-06-24
Abstract: 1343450 Drawing RHEINISCHE FEINDRAHT-INDUSTRIE DR-ING SCHILDBACH KG 24 June 1971 [4 July 1970] 29559/71 Heading B3P [Also in Divisions D1 and G3] The speed of a motor 20 of a cylindrical or tapered winding bobbin 4 in a wire drawing machine is controlled by a potentiometer 22 which produces a voltage in accordance with the voltage produced by a tachogenerator 17 connected to the last drawing drum 1a and the movement of a dancing level 7 carrying a guide roller 5 for leading the wire to a reciprocating laying roller 6 for the bobbin 4. The lever 7 is connected to a shaft 7b carrying a friction disc 10 between two cam discs 8, 9 the disc 9 being rotatable relative to the shaft 7b an amount determined by a detent 14. If the wire tension increases during drawing, the lever 7 is rotated clockwise causing a tracer 11a to ride on to a raised cam surface of the cam 9. A switch 11 is thereby actuated causing a motor 24 to be pulsed which moves a rod 23a connected to a slider 23 of the potentiometer 22. The speed of the bobbin motor 20 is reduced by the potentiometer 22 thereby reducing the wire tension. If the lever 7 is rotated further clockwise, a switch 12 is actuated by a tracer 12a, riding on to a cam surface 8a of the cam 8 which causes the motor 24 to be continuously switched on. If the wire tension decreases. the cam 9 is held stationary by the detent 14 whilst the cam 8 is rotated anticlockwise causing a tracer 11b to ride on the cam surface 8a, which actuates the switch 11, and a tracer 13a to ride on a cam surface 8b to actuate a switch 13 which reverses the motor 24. The speed of the bobbin motor 20 is also controlled by the speed of the last driving drum 1a which is connected to a tachogenerator 17 whose voltage representing the drum speed is applied to the potentiometer 22. The slider 23 of the potentiometer 22 may alternatively be moved directly by movement of the shaft 7b.
Patent GB-728693-A (GB)
Title: Improvements in screening mechanism for electric plug and socket connection
IPC: H01R13/453
Filed: 1952-11-22
Abstract: 728,693. Two-part couplings. PARSONS, Ltd., C. H., and HANDLEY, G. B. Nov. 23, 1953 [Nov. 22, 1952], No. 29569/52. Class 38 (1), A self-contained shutter assembly for a socket connector comprises a pair of insulating plates 2 having thickened lower portions 3 so that when the plates are secured together face to face a recess is formed to accommodate a link 17 fixedly pivoted at one end at 18 and connected at its other end to a lever 12 having a chamfered nose 15 for engagement by an earth pin. The inner end of lever 12 is pivoted to lugs 10 secured to an insulating shutter plate 9, and pins 13 carried by the lugs, one of which forms the pivot for lever 12, engage arcuate slots 14 in the plates 2. A spring 22 maintains the shutter in the normal position shown. Engagement of nose 15 by an earth pin deflects lever 12 and shutter 9, the shutter being constrained to an arcuate path by the pins 13.
Patent GB-305608-A (GB)
Title: Improvements in or relating to the sorting of granular materials
IPC: B03B4/02
Filed: 1927-11-05
Abstract: 305,608. Appleyard, K. C., Bewicke, P. W., Laycock, Sir J. F., Portall, M. R., and Manners, W. E. Nov. 5, 1927. Pneumatic separating. - In apparatus for sorting granular materials of the type in which the materials are fed on to a pervious table, which may be jigged or stationary, and are acted on by continuous or pulsating air currents passing up through the table, the effect of the air currents at different parts of the table is controlled by the provision of movable vanes connected in groups which are independently adjustable from the outside of the machine. In the construction described, two decks of vanes are used, each deck being subdivided longitudinally into a number of compartments each of which is provided with a series of pivoted vanes f, Figs. 1, 10 connected in groups k by bars i.
Patent GB-246108-A (GB)
Title: An improved silencer for internal combustion engines
IPC: F01N1/16
Filed: 1925-11-25
Abstract: 246,108. Etablissements Terrot. Jan. 19, 1925, [Convention date]. Exhaust-silencers.-A silencer is provided with a rotatable plug valve 2 by which the inlet 7 can be put in communication with the silencing chamber 9 or in direct communication with the outlet 8. The valve has a through passage 20 adapted to connect the inlet and outlet, and pockets 21, 22 adapted to connect the inlet and outlet respectively to the silencing chamber 9, and may have blind pockets 23 which serve only to lighten the valve. The chamber 9 is provided with baffles 11 and with an opening 13 leading to the passage 20 when the valve is in the normal position shown. The valve is retained in place by a removable cover 5 and actuated by a pedal 16 provided with a spring catch for retaining the valve in the open or closed position.
Patent GB-1267837-A (GB)
Title: Induction heating brazing method
Inventor: DIXON AUSTIN
IPC: B23K35/00
Filed: 1969-06-12
Abstract: 1,267,837. Brazing. WESTINGHOUSE ELECTRIC CORP. 12 June, 1969, No. 29826/69. Heading B3R. In brazing a non-ferrous metal member to a metal member, a layer of brazing alloy is inserted between the members, the assembly is subjected to induction heating which is regulated by pyrometric observation to provide a brazing temperature in slight excess of the liquidus temperature of the brazing alloy, the heating is terminated after a predetermined period and the assembly is gas-cooled to a temperature for hardening the brazing alloy within thirty seconds after reaching the brazing temperature, a uniform squeeze force being applied to the assembly at least during the heating and cooling periods. A non-ferrous member 5 of agehardened chromium-beryllium alloy, aluminium, aluminium alloy or nickel base alloy and a member 6 of silver-tungsten or copper-tungsten are cleaned by acid, sprayed with flux and assembled with a preformed member 7 of brazing alloy, the assembly being held in a water-cooled induction coil 9 between a stop 14 and a support 12 carried on a fluid-actuated piston-rod 11. With the assembly under squeezing force the coil 9 is energized from a motor generator 18 controlled by an infra-red pyrometer 22 directed to an emissivity stabilized area, i.e. provided with a stabilized radiation indication surface by spray coating with a high temperature paint, of the surface of the assembly to attain the preselected temperature and hold it for a predetermined time after which the coil is de-energized and forced cooling of the assembly by air jet 26 is effected. The brazed assembly is automatically unloaded from the apparatus by a solenoid-operated valve 15 under control of a timer 30 to cause pistonrod 11 to retract subsequent to air cooling. The brazing alloy may be a silver, copper, zinc, cadmium, phosphorus alloy, the member 6 may be a tip for a power circuit breaker contact and the member 5 may be a copper-chromium alloy tip support member.
Patent GB-1194914-A (GB)
Title: Induction Motor
IPC: H02K17/02
Filed: 1967-06-28
Abstract: 1,194,914. Induction motors. LICENTIA PATENT-VERWALTUNGS G.m.b.H. 28 June, 1967 [1 July, 1966], No. 29857/67. Heading H2A. In induction motor of salient-pole, e.g. shaded-pole, type in which the torque characteristic is usually badly distorted by harmonics, the values of these harmonics are determined by a harmonic field analysis of the field itself or an analysis deduced from the torque-speed characteristic of a machine with uniform airgap, and the air-gap is graded inversely so as to counteract the effect of the harmonics. In the case of shaded-pole motors the air-gap under the shaded-pole must be closed up to allow for the flux-damping caused by this pole. The actual stampings deviate slightly from the ideal in order to simplify manufacture (Fig. 5, not shown). The circumferential variation of airgap according to the invention is illustrated for an external-rotor machine (Fig. 6, not shown).
Patent GB-442386-A (GB)
Title: Improvements relating to dress fastenings and ornaments
IPC: A44B3/04
Filed: 1934-10-18
Abstract: 442,386. Buttons etc.; sleeve links ; studs and solitaires. MORTON, T., Woodlea, Oxford Road, Moseley, Birmingham. Oct. 18, 1934, No. 29859. [Class 43] A stud, button cuff link, or like fast ening comprises ai ornamental head i and a shank a hav ing a transverse slot or hole to receive one limb of a secur ing bar c that car be swung into align ment with the shank to facilitate inser tion and then movec transversely thereo: to secure the stuc &c. in position. The bar c, which comprises a loop of metal strip secured at its free ends by a cap e, is urged towards the apertured end of the shank by a spring g and a friction element located within the shank. In a modification, Fig. 6, the spring is dispensed with and the shank a is threaded internally to receive the screw of a detachable button b. Specification 420,605 is referred to.
Patent GB-171991-A (GB)
Title: A process for the simultaneous production of de-mineralized amylaceous substances and lower nitrogenous matter for food purposes, by the use of tubers or cereals in whole or broken grains
IPC: A23J1/12
Filed: 1921-11-09
Abstract: In the preparation of starch from grains or tubers the materials treated are subjected to an acid fermentation which causes the nitrogenous matters to pass into a solution, which can be separated, the remainder being used for making starch.  In treating rice the grains mixed with water are kept for a day at 55 DEG  C., the mixture being treated with air; a portion of the grain is then placed with fresh grain and the treatment repeated, the process being continued until sufficient nitrogenous matter is dissolved.  A special spored microbe may be isolated from liquid thus produced, and treatment with a culture of this microbe may be substituted for the process.  This microbe may be also used for materials other than rice, but preferably each substance to be treated is used to develop a special microbe for its treatment. If the grain treated contains a high percentage of sugar it should be removed by solution.  Starch may be extracted from the treated grain, or the grain may be used directly in the making of sizing materials and pastes.ALSO:In the preparation of nitrogenous foods and starch from grains or tubers the materials treated are subjected to an acid fermentation which causes the nitrogenous matters to pass into a solution which can be separated from the remainder of the grains. The nitrogenous extract is boiled to precipitate coagulable albumen, and is then concentrated to 20-25 DEG  B<\>ae. and cooled, when crystals of magnesium lactate are deposited.  The residue contains assimilable nitrogen in the form of amino-acids.
Patent GB-1387046-A (GB)
Title: Conveyor
IPC: B08B3/02
Filed: 1972-06-26
Abstract: 1387046 Shoots UDDEHOLMS AB 26 June 1972 [8 July 1971] 29895/72 Heading B8S [Also in Division C7] Apparatus for conveying spherical or cylindrical objects, e.g. bearing balls or rollers through degreasing apparatus includes a feed shoot 7, a vertically movable assembly 14 having carriers 19, 22, 26, fixed supports 10, 11 and an outlet 9. Chlorinated hydrocarbon in a compartment 4 passes from a compartment 5 into which the liquid falls from spray nozzles 28, the nozzles being fed from a surface pick-up 32 via cleaning means. With the assembly in the Fig. 1 position, a ball or cylindrical object 8 from the shoot 7 rests on the top of the movable carrier 19, a further object rests above a pivot pin 23 of the carrier 22 and a still further object rests on the lower end of the movable carrier 26. When the assembly 14 is raised, Fig. 2, the first object rolls on to the fixed support 10, the carrier 22 pivots downwardly and the further object rolls on to the stationary support 11. The still further object will roll from the carrier 26 down the outlet 9. The solvent evaporates while the objects rest on the carrier 26. The surfaces which come into contact with the objects may be of plastic.