baber/WOPTO huggingface dataset:
Patent GB-1518523-A (GB)
Title: Flash lamp arrays
IPC: H05K9/00
Filed: 1975-07-09
Abstract: 1518523 Flash-lamp units GENERAL ELECTRIC CO 9 July 1975 [26 Sept 1974] 28920/75 Heading G2X In a multiple flash-lamp array an electrically conductive reflector is electrically connected to the lamp circuitry by a U-shaped clip to provide an electrical shield. The reflector 41, which may be of aluminium coated plastics has a web 73 which is engaged by the clip legs 71 and 72 while the base of the clip, which can have loops 74, rests against a conductive area 57 of the circuit board. This area is connected to lead-in wires for the lamps and to terminals 31 and 31' provided on tabs 18, 18'. The stray capacitance to ground of terminals 31, 31' is increased by being connected to the reflector and the likelihood of the lamps firing accidentally if the terminals are touched by an electrostatically charged body is reduced. The lamps are fired sequentially and a sheet 43 of material which is effected by radiation indicates which lamps have fired.
Patent GB-340286-A (GB)
Title: Improvements in electrical frequency changing apparatus
IPC: H04L25/03
Filed: 1929-09-24
Abstract: 340,286. Converting. ELECTRICAL RESEARCH PRODUCTS, Inc., 195, Broadway, New York, U.S.A.-(Assignees of Burton, E. T. ; 97, Cypress Street, Millburn, New Jersey, U.S.A.). Sept. 24, 1929, No. 28990. Convention date, Oct. 4, 1928. Addition to 312,338, [Class 38 (ii), Electric currents, Converting &c.] [Class 38 (ii).] Frequency, changing.- In arrangements for multiplying the frequency of alternating currents, two or more static transformers having cores of a material having high permeability at low magnetizing forces are employed, and, by means of D.C. excitation, the cores are worked at such a point on the magnetization curve that high mutual inductance between the primary and secondary windings exists only at certain values of the primary alternating current. Thus, secondary voltage impulses occur at spaced intervals in each transformer, and by giving appropriate phase relationships to the impulses from the several transformers, a series of impulses, which can (by means of inductances and condensers) be shaped into a sinusoidal wave of increased frequency, is obtained. Figs. 1 and 3 show respectively arrangements for obtaining double and triple frequencies, 13, 14 being primary windings energized with A.C. from a source f and carrying also the D.C. exciting current from a battery 17. The secondaries 18, 19 are associated with the shaping devices 20, 21, 22. In the arrangement for trebling frequency (Fig. 3), a third transformer, the primary 23 of which is not supplied with D.C., is associated with the two transformers used in Fig. 1. In another arrangement for increasing frequency five-fold, five transformers are employed, one pair being energized with D.C. to such an extent as to become inductive when the primary A.C. reaches certain amplitudes, another pair being energized with a different value of D.C. so as to become inductive at different values of the primary A.C., and the remaining transformer having no D.C. magnetization so as to be inductive at still different values of the primary A.C. Thus five pairs of impulses of opposite sign per cycle of primary frequency are imparted to the secondary circuit. Cascade formations of the arrangements described are resorted to for still higher frequencies.
Patent GB-450306-A (GB)
Title: Improvements in or relating to conveyors, elevators and like appliances comprising pin coupled members
IPC: E02F3/12
Filed: 1934-10-10
Abstract: 450,306. Dredger buckets. AITKEN, A. F., Siamese Tin Syndicate, Ngow, Renong, W. Siam. Oct. 10, 1934, No. 29030. [Class 68 (i)] [See also Groups XXX and XXV] A coupling pin 4 for dredger buckets and the like has at one end an off-set head 4a which is adapted to engage an inclined recess 5 in one end eye bearing portion 2, the recess 5 being inclined to the line connecting successive pins at an angle of about between 60‹ and 75‹. By removing the pin 4 and inserting it from the opposite side the head 4a is brought into a recess, similar and parallel to the recess 5, in the further eye portion 2. Different areas of the pin surface can by this reversal be brought into wearing position, thus lengthening the life of the pin. Both the head 4a and the sides of the recesses are of dovetail form, and the pin is secured in place by driving a wodge-shaped locking key 7 between the head 4a and the recess side.
Patent GB-778192-A (GB)
Title: Process for removing hafnium from zirconium
Inventor: NEWNHAM IVAN EDGAR
IPC: C01G25/04
Filed: 1952-11-18
Abstract: Zirconium tetrahalide contaminated with hafnium tetrahalide is subjected to the action of a reducing agent to bring about preferential reduction of the zirconium tetrahalide and thereafter the unreduced hafnium tetrahalide is removed from the reaction mass. The reduction of the zirconium tetrahalide may be ffected by heating the compound in a sealed vessel in vacuo or an inert atmosphere with finely divided metallic zirconium, magnesium, aluminium, zinc or other reducing agent of sufficient oxidation reduction potential whereby the zirconium halide is reduced to the trihalide or dihalide. The temperature of the treatment may be as high as 500 DEG C. when zirconium is employed whilst for aluminium a temperature between 250 and 400 DEG C. is suitable.  After reduction the unreduced hafnium tetrahalide may be separated by sublimation in vacuo at a temperature above 250 DEG C. and below the volatilization temperature of the reduced zirconium tetrahalides.  The lower zirconium halide residue may be dissolved in water or dilute mineral acid to produce solutions of zirconium oxyhalides containing less than 0.1 per cent of hafnium or alternatively the unvolatilized residue may be converted into zirconium tetrahalide and metallic ziconium by heating in vacuo at above 600 DEG C. to bring about disportionation. According to an example, zirconium tetrachloride was mixed with twice its weight of finely divided metallic zirconium and heated at 420 DEG C. in a sealed evacuated vessel for one hour whereby zirconium trichloride was produced whilst the hafnium tetrahalide was substantially uneffected.  Whilst maintaining the temperature the hafnium tetrachloride and unreduced zirconium tetrachloride was then pumped off and the volatile products condensed.  The condensed material contained 28 to 30 per cent of hafnium calculated at dioxide and the residue in the vessel contained up to 90 per cent of the original zirconium.  This residue consisted of zirconium dichloride, trichloride and tetrachloride, and on heating in an evacuated vessel to above 600 DEG C. the zirconium dichloride disproportionated and the resulting zirconium tetrachloride was pumped off and condensed. The zirconium metal remaining in the vessel was used for the treatment of further zirconium tetrachloride.  The condensed purified zirconium tetrachloride may be subjected to a further similar purification treatment.
Patent GB-1069933-A (GB)
Title: Printer with movable hammer and hammer operator carriage
IPC: H04L13/18
Filed: 1963-07-30
Abstract: 1,069,933. Selective printers. SCM CORPORATION. July 30, 1963 [Oct. 25, 1962], No. 29163/65. Divided out of 1,069,931. Heading B6F. The subject-matter of this Specification is identical with part of that described in the parent Specification but the claims are directed to a printing hammer mechanism.
Patent GB-208854-A (GB)
Title: A new or improved device for cutting the verge of roads and for similar purposes
IPC: E01H1/00
Filed: 1922-10-26
Abstract: 208,854. Brown, D. H., and Snodin, G. R. Oct. 26, 1922. Digging-apparatus.-A machine for cutting the verges of roads is adapted to be drawn by a tractor and comprises a framework having a horizontal cutting unit, a vertical cutter, and means for securing the frame to the axle of a tractor. The tractor also carries a structure for controlling and limiting the movements of the machine. The frame member comprises a drawbar 1, pivoted to the axle by a band 3, and member 6 spaced therefrom by a strut 13 and bar 14. A plate 7 carries a point member 9 in which is secured one end of the cutter bar 43, the other end being bent and secured to a bar 45 on the frame 1. Also secured to the cutter bar 43 is the edge of a deflector 46 having a lower portion 47 and side portion 48 secured to the plate 7. The vertical cutter 10 is clamped to the frame 6. For anchoring the rear part of the machine to the tractor, the latter carries a frame comprising a U-shaped bar, one limb 16 of which is bolted to a flange 17 on the tractor, and the other 15 to a bracket 51. The base 19 of the bar is extended at 19<a> and these and a bridge member 20 secure the frame 1 between them. An adjustable compression spring 24 maintains the cutters in contact with the ground. The cutter may be lifted by means of a chain 23 and lever 21 which may be retained by a hook 30. For transport, the machine is adapted to be mounted on a trolley and drawn behind the tractor. According to the Provisional Specification, a vertically adjustable circular cutter may also be provided.
Patent GB-1145465-A (GB)
Title: System for detecting structural failure
IPC: A62C3/08
Filed: 1967-06-23
Abstract: 1,145,465. Measuring stress electrically. J.E. LINDBERG. June 23, 1967 [Aug.15, 1966], No.29209/67. Heading G1N. Longitudinal stress in an aircraft member such as a fuel line 14, Fig.2, is detected by attaching along the length of the member a resistance or capacitance strain gauge 28, the impedance of which increases with stress until a predetermined value is reached whereupon, for example, a fuel valve 15 is automatically closed. A normally closed relay having its coil 22 in circuit with the strain gauge to keep its contacts 24, 25 open, is released at the predetermined value to energize a solenoid 21 which closes the valve 15. Alternatively the valve solenoid (21, Fig. 5, not shown) may be normally actuated to open the valve (15) by means of a relay (45), which in this case is normally open and is held closed by the strain gauge circuit until an excessive strain occurs. The impedance rise may be achieved by excessive strain immediately preceding fracture of the gauge upon crashing during landing or takeoff. The resistance gauge comprises a tube 29 containing a conductor 27 which may be a wire, carbon, a metal salt, or a semi-conductor, or an electrolyte in a flexible bag, the conductor 27 being connected to the relay coil. Alternatively, the relay coil is connected between tube and an axial wire (33, Fig. 3, not shown) the tube being filled with a semi-conductor, a liquid or a salt. In a capacitive gauge, a dielectric fills a tube (36, Fig.4, not shown) having an axial wire (37), the tube and wire being connected either to a bridge to measure the capacitance or to an oscillator (40, Fig.4, not shown). The detected impedance variation in excess of the predetermined level may also control fire extinguishing equipment. Two or more gauges (41, 42, Fig. 5, not shown) may be connected in parallel, or in a parallelseries arrangement. The gauge may be arranged in zig zag fashion around the pipe Figs.6, 7, (not shown) or may be mounted, for example, adjacent the wing fuel tanks Fig. 8 (hot shown).
Patent GB-712680-A (GB)
Title: Improvements relating to means for adjusting the setting of vehicle suspension springs
IPC: B60G17/02
Filed: 1952-11-20
Abstract: 712,680. Control of motors. DAIMLER-BENZ AKT.-GES. Nov. 20, 1952 [Nov. 20, 1951], No. 29334/52. Addition to 712,661. Class 38(3) [Also in Groups XXXII and XXXV]  In means for adjusting vehicle suspension springs in accordance with Specification 686,219, [Group XXXII], and the parent Specification the means comprising an electric motor, a change-over switch device, a reduction gearing operating between the motor and the switch device, the reduction gearing and the switch device is combined with and mounted upon the motor to form a structural unit. In the arrangement shown, the change-over switch device and reduction gearing are carried on a substantially cup-shaped plate 67 which is secured to a boss 62 extending from an end wall 61 of the motor 21. A pin 52, secured to the plate 67, carries a worm wheel 40 which is driven through a worm wheel 75 and worm 42, mounted on a shaft 72, from an extension 65 of the motor shaft 63. A striker 49 mounted on the worm wheel 40 coacts with an abutment arm 47 of a rockable lever 39 formed with a wedge-shaped part 43 having camming engagement with a pin 44. The latter is carried by a slider 46 slidable on the pin 52 and is biased upwardly by a tension spring 45, to maintain the lever 39 in the position shown. An extension 54a on the lever 39 extends into a gap between abutments 53a and 53b extending upwardly from a lever device 38a mounted on a rockable pivot pin 51a, which at one end supports a pivot 51 for the lever 39 and which at its opposite end mounts a switch lever 58. The device 38a which is of similar form to the lever 39 has a camming action with a pin 38c carried by slider 38d, slidable on the pin 52. The slider 38d is biased upwardly by a spring 76. A striker 50 on the wheel 40 coacts with an abutment on an opposite arm of the lever 39. The switch lever 58 which is electrically connected with a terminal on the plate 67 is provided with contacts which engage one or the other of a pair of spring contacts 35 or 36. In operation, the striker 50, after a given number of revolutions of the motor shaft 63 engages the abutment (not shown) on the right hand end of lever 39, the wedge part 43 of which depresses the pin 44 to permit the lever to snap to a position opposite to that shown. During this movement, the extension 54a moves to engage abutment 53a to move the device 38a, the part 38b of which depresses the pin 38c to permit the device 38a to snap over and turn the switch lever into engagement with the other of the contacts 35 or 36, at which time the motor is cut out by the limit switch. When the motor is again energized, the pin 49 engages the abutment 47 and the lever is eventually returned to the position shown. The gearing and switch device is enclosed by a cover 60 which is secured on to an extension of the pin 52.
Patent GB-842015-A (GB)
Title: Improvements relating to domestic fires
IPC: F24B1/18
Filed: 1956-09-26
Abstract: 842,015. Domestic fires. BAXENDALE, R., BAXENDALE, J., BAXENDALE, P. S., and CASELTON, M. J. Sept. 10, 1957 [Sept. 26, 1956], No. 29359/56. Class 126. The outlet flue 1, Fig. 1, of a domestic fire is connected to the flue 2, Fig. 3, of the fireplace by a dust formed of strips of wire mesh secured to the sides of the flue 1. The dust is inserted in the flue 2 and its sides are pressed outwards by hand to conform to the shape of the flue and held in position by screws mounted in a slip 11, Fig. 4. The joints between the sides and the meshes in the strips are sealed by fireproof material.
Patent GB-171108-A (GB)
Title: Improved resilient coupling for use between the engine and the transmission of a motor vehicle
IPC: F16D3/72
Filed: 1921-11-04
Abstract: 171,108. Viratelle, M. N. Nov. 6, 1920, [Convention date]. Securing chain-wheels &c. on shafts.-The engine-shaft a of a motor-cycle or other vehicle drives a chain-wheel or pinion c through a spring coupling e, the ends of the spring abutting against pins b, d on the engine-shaft and the hub of the chain-wheel respectively. The engine tends to unwind the spring so that when the driving torque is excessive the spring binds against the inner surface of the chain-wheel hub.
Patent GB-488977-A (GB)
Title: Improvements in typographical composing machines
IPC: B41B11/06
Filed: 1937-10-27
Abstract: 488,977. Type-bar-making machines. INTERTYPE, Ltd. Oct. 27, 1937, No. 29370. Convention date, Feb. 26. [Class 100 (iii)] Magazines.-In machines having a shiftable column of magazines, adjustable means are provided for guiding the column during shifting, so that each magazine of the column, or only certain ones thereof, as desired, may assume an operative relation to the assembling and distributing means. Either adjacent or non-adjacent magazines or pairs of magazines may thus be brought into position. The column may consist of four magazines 7, Fig. 1, which are provided with double assembling and distributing mechanism, and are shifted by means similar to those described in Specification 262,670, [Class 100 (iii)]. The several magazine-frames 8 are secured together by upper and lower tie-plates 9, 10, so as to form a unit, which is supported by rollers 11 riding on tracks 13. The lower end of the column rests on a shaft 14, which carries at each end a pinion gearing with a rack 16. The shaft 14 is secured by links 22 to the shafts of the rollers 11, and the magazine column is shifted along the tracks 13 and racks 16 by chaingearing enclosed in housings 17, 18 and operated by a handle 21. The magazine-locating means comprise cam-blocks 27, Fig. 2, secured one to each side of the machine frame, and co-operating with rollers 28 on the magazine unit. Each cam-block has two high portions separated by a depression 27b. During the shifting, the lower end of the magazine unit is raised by the cams, so as to allow the magazines to clear the escapement-rods 26, and when the rollers 28 reach the low parts of the cams, different pairs of magazines are in operative position, The magazines are accurately seated by the engagement of lugs 23 with locating-blocks 24 on the machine frame. A controlling selector or switch 29 is pivoted adjacent to each cam-block, and can be swung down into the position shown, so as to bridge the central depression of the cam. The rollers 28 then travel over the switches, so that the column passes directly from one extreme position to the other, the intermediate position, in which the second and third magazines are in operation, being omitted. Specification 14582/90, [Class 100], also is referred to.
Patent GB-689782-A (GB)
Title: Improved device for securing spindles in loom shuttles
IPC: D03J5/08
Filed: 1950-11-17
Abstract: 689,782. Shuttles for looms. BROWN, H. Nov. 17, 1950, No. 29387/49. Class 142(iii) Catch means automatically grips a shuttle spindle in a bore in a pivoted block when the block is turned down from the loading to the weaving position, the block being pivoted in a cradle secured in the shuttle body. The end of the spindle has a circumferential groove and enters a bore 3 in a block 4 pivoted on a pin 9 in a U-shaped cradle 5. When the block and spindle are turned down horizontally, balls 10 leave recesses or holes 12 in the cradle and are pressed inwards and grip the spindle by engaging the groove. The block is retained in the turned-down position by spring-urged balls 13 engaging holes 18 in the cradle. The cradle is secured in the shuttle by screws or pins passing through holes 8. In a modification, the spindle 1 is retained by the pivot pin 19 for the block, and a flat 20 on the pin enables the spindle to be withdrawn or inserted when the block has been turned up to the loading position. The block is retained by a catch 21 pivoted at 22, and can be released by pressing down its upper part against two springs 24. In this modification, the spring-urged balls 13 may be used instead of the catch 21. The balls 10 and 13 may be replaced by plungers, and only one ball 10 or plunger may be provided.
Patent GB-265319-A (GB)
Title: Non-splintering shock-resistant glass
IPC: B32B17/10
Filed: 1925-11-21
Abstract: 265,319. Innes, W. R. Nov. 21, 1925. Compound sheets.-Compound, transparent, non-splintering sheets are formed by coating the surfaces of the glass plates, sheets, &c. to be joined with one or more colloidal substances such as gelatine celluloid, viscose, pyroxylin, gums, agar-agar, Irish moss, or Icland moss, or by interposing between the plates a film or films of these substances and by surface-wetting the colloid by immersion in a liquid capable of absorption thereby and then uniting the plates by light pressure while still immersed. The plates are preferably cleaned, prepared, and coated as in producing photographic plates but the coating film is thicker. The strength and temperature of the gelatine solution are preferably 15 per cent and 140‹ F. respectively. A sufficient quantity of industrial spirit is added to the above solution to prevent grease spots, or saponin, quillaia bark extract, or soap may be added for that purpose. Hardening agents such as chrome alum, formalin, &c., and colouring matter and non-volatile antiseptics and matting materials, such as starch &c. may be added to the colloid. The drying operation is suitably delayed by adding a hygroscopic substance such as glycerine, calcium chloride to the solution or by drying at a suitably low temperature. Air bubbles may be avoided by boiling the water or maintaining it in vacuum for sufficient time before and while jointing. The edges of the compound sheet are trimmed by cutting or grinding and luting may be then applied, an undercut slot being preferably provided to hold the luting.
Patent GB-1483003-A (GB)
Title: Load diverter switch assembly
IPC: H01H33/16
Filed: 1975-07-14
Abstract: 1483003 Regulating switches MASCHINENFABRIK REINHAUSEN GEBR SCHEUBECK KG 14 July 1975 [17 July 1974] 29427/75 Heading H1N In a three-phase transformer tap-changing switch comprising, arranged in an oil filled cylindrical outer housing 3, a cylindrical inner housing 1 comprising three symmetrically disposed shell members 10 each detachably mounted on two axially spaced attachment members 11, 12, and carrying fixed contacts 9 each shell member extends in one direction along the longitudinal axis of the cylindrical housing beyond the attachment member to form a respective end portion inside which a resistor assembly 18 is attached, conductors interconnecting this resistor assembly and the fixed contacts being disposed on the radially outer sides of the shells. Protrusions in the form of ridges 24 on the outer sides of the shells protect these conductors and screws 25 fixing the shells to the attachment members during assembly of the switch. The end portions have their axially outer extremities disposed in a plane extending perpendicular to the longitudinal axis of the housing to form supports 19 for the inner housing when it is removed from the outer housing.
Patent GB-168541-A (GB)
Title: Improvements in or relating to a certain known means for hermetically packing tobacco and other substances
IPC: B65D85/08
Filed: 1920-10-19
Abstract: 168,541. Johnson, J. M. Oct. 19, 1920. Opening by cutting.-The flange of a can lid b carrying a sliding cutter d is recessed at e in order that the cutter may be continuously visible.