baber/WOPTO huggingface dataset:
Patent GB-606751-A (GB)
Title: Improvements in or relating to a method of increasing the specular reflectivity of metal flakes
IPC: C09C1/62
Filed: 1946-03-13
Abstract: A method of increasing the specular reflectivity of metal flakes comprises providing a uniform dispersion of ball-milled leafing metal flakes in a paint thinner, the proportion of metal in the mass being such that the mass is relatively dry and stiff but still plastic, and subjecting the mass to a mechanical working whereby individual flakes are subjected to friction and pressure that is controlled between limits.  The metal flakes may be ball-milled in a liquid made up of a thinner and a leafing agent, whereby the particles are brought to flake form and furnished with a leafing film, the mixture discharged from the mill, liquid removed to such an extent that the metal content exceeds 80 per cent and the mass subjected to mechanical working by firing it through apertures of an extrusion plate, these apertures having a length not less than and preferably more than twice their diameter, whereby individual flakes are caused to move mainly flatwise over each other under controlled friction and pressure. It is preferred that the starting material is a filter cake containing 78 to 90 per cent aluminium or about 90 per cent copper. Specifications 391,839 and 477,451 are referred to.
Patent GB-1029211-A (GB)
Title: New azo compounds
Inventor: ATKINSON JOHN REGINALD
IPC: C09B62/026
Filed: 1962-03-01
Abstract: The invention comprises azo compounds of the formula <FORM:1029211/C4-C5/1> where X stands for any aromatic radical containing one or more sulphonic acid groups, R1 represents a libile atom or group, A represents a 1:3:5-triazine or pyrimidine radical and R2 stands for a labile atom or group which may be the same as or different from that represented by R1 or a radical of the formula <FORM:1029211/C4-C5/2> where X has the meaning stated above or for a group connected to the triazine or pyrimidine nucleus by means of an oxygen, sulphur or nitrogen atom which is not a labile group, and the metal complexes of such of these compounds as contain a metallizable group in X in ortho position to the azo group.  The dyes are prepared by appropriate diazotization and coupling procedures or by reacting a compound corresponding to the first formula save that at least one of R1 and R2 represents a halogen atom, with a tertiary amine or a compound of the formula RH or an alkali metal salt of such a compound and where R represents a labile group or a group connected to the hydrogen atom by an oxygen, sulphur or nitrogen atom which is not a labile group.  By a labile atom or group there is meant an atom or group which is bound by a covalent bond to a carbon atom of the triazine or pyrimidine nucleus but which readily dissociates under the influence of heat or alkalis especially in the pressence of moisture to form an ion or unchanged molecule to leave a residue capable of reacting with the cellulose molecule.  In examples aniline 2:5-disulphonic acid is diazotized and coupled with 2:4 - dichloro - 6 - (41 - hydroxynaphth - 11-yl)-1:3:5-triazine to obtain a red dye for cellulose and a black dye for wool is obtained by reacting the product obtained by chroming the dye 6-nitro-1:2:4-diazonaphthol sulphonic acid --> b -naphthol with the dye 4-nitro-2-aminophenol --> 1 - [41 - chloro - 61 - di-(b  - hydroxyethyl) - amino - pyrimid - 21 - yl)-4-naphthol. Other examples are furnished.
Patent GB-420000-A (GB)
Title: Improved drive for the regulatable transverse motion of the needle bar in zigzag sewing machines
IPC: D05B3/02
Filed: 1934-03-14
Abstract: 420,000. Sewing - machines. SCHWEIGER, C. W., 8, Kaufingerstrasse, Munich, Germany. March 14, 1934, No. 8045. Convention date, May 4, 1933. [Class 112.] The drive for the jogging motion of the needle bar in a zig-zag sewing-machine is adjustable and consists of a link between the needle bar and a lever oscillating about a pivot. The main shaft drives a cam disc which engages the forked end of a lever d to cause the lever to oscillate. A link e is articulated to the lever d at f. A bolt i slides in grooves g, h. This bolt can be displaced in a slot m in the machine casing and secured in a selected position by a nut p. The link e is connected to the needle bar bearing r so that during displacement of the link e by the lever d, the needle bar t is oscillated about an axis u. In the position shown, the pivots f and i being in alignment, no jogging of the needle occurs. If the pivot i is moved in the slot m, the needle will be jogged to an extent depending on the displacement of the pivot.
Patent GB-368082-A (GB)
Title: Improvements in or relating to light sensitive emulsions for photographic purposes for metal films
IPC: G03C1/91
Filed: 1931-03-16
Abstract: 368,082. Photographic emulsions. KUPFER, R., 27, Hardenbergstrasse, Berlin. March 16, 1931, No. 8088. Convention date, March 15, 1930. [Class 98 (ii).] A solution of potassium or sodium silicate is added to a photographic emulsion, prior to coating a metal film, in order to increase the adhesion thereto. A chrome acid salt or chrome alum solution may be added to the silicate solution prior to incorporation in the emulsion.
Patent GB-583876-A (GB)
Title: Improvements in or relating to vacuum pans
IPC: B01D3/10
Filed: 1944-05-01
Abstract: <PICT:0583876/III/1> <PICT:0583876/III/2> The bottom 1 of a vacuum pan (Fig. 1) is provided with a centrally disposed, circular hole 2 and a discharge box 3, which extends inwardly to support a valve seat 4, and a conical valve 6, which projects into the pan through the hole.  Formed integral with the discharge box is an annular chamber 15 having an inlet 16 for connection to the weak liquor supply, and an annular opening at the top through which the weak liquor passes into the pan.  When the liquor is sufficiently concentrated the valve 6 is raised by rotation of shaft 9; this permits the passage of liquor to the discharge box 3 from which it is run off through outlet 14.  In the modification shown in Fig. 4 the top of the annular chamber 15 is closed by the bottom of the pan; but is provided with a series of holes 25.  Specification 511,485 is referred to.
Patent GB-928761-A (GB)
Title: Process for producing lubricating oil
Inventor: BEUTHER HAROLD
IPC: B01J37/20
Filed: 1960-01-28
Abstract: A process for producing a lubricating oil comprises contacting a sulphided catalyst consisting of one of the metals W, Cr or Mo and one of the metals Ni, Co or Fe supported upon a carrier material of minimum cracking activity equivalent to 14,1% on the Kellogg scale (described in the Specification) with a stream of liquid deasphalted hydrocarbon charge oil in admixture with a stream of hydrogen under hydrogenation conditions of 343 DEG -441 DEG C., 105-700 kg./cm.2 guage pressure, L.H.S.V. 0,25-2,0 and 56-420 S.C.M. hydrogen/barrel of charge oil, and separating a high quality lubricating oil fraction from the reaction product or effluent.  The catalyst may be halogen-promoted (F or Cl); suitable carrier materials are, e.g. alumina, silica-alumina and magnesia-silica.  Calcium alumino-silicate is stated to be unsuitable as a carrier material, although falling within the above definition, since the presence of Ca has a disruptive effect on good cracking characteristics. Specification 928,762 is referred to.
Patent GB-175907-A (GB)
Title: Improved axle mill
IPC: B21H1/18
Filed: 1921-03-16
Abstract: 175,907. Hamilton, G. S., and Thomson, T. March 16, 1921. Rolling.-An axle-mill of the type having superposed relatively reciprocating platens, has the platens divided into three sets, the intermediate set first forming the middle portion of the axle, and the external sets then completing the axle. The mill consists of three pairs of platens 1, 1<a>, 2, 2a, 3, 3a reciprocated in opposite directions in the frame 4 on roller tracks 19. The platens 1, 1<a> are brought into operation first to roll the middle portion, and the ends are then formed by the other pairs of platens. The platen 1 is adjusted towards the non-adjustable platen 1<a> by screws 6 which are fed down through a bar 7 by worm gear 9, 10 driven by a motor so as to press on the guide 8. The platens 2, 3 are adjusted by screws 11 traversed by worm gearing 13, 13a from a motor and the platens 2<a>, 3<a> are adjusted by wedges 14 operated by racks and pinions 16 from shafts 17 connected by bevelgear 18 to the shaft carrying the worms 13.
Patent GB-685317-A (GB)
Title: A new or improved crash guard for motor cycles
IPC: B62J27/00
Filed: 1950-04-01
Abstract: 685,317. Crash guards for motor cycles. ONSLOW, C. G. VALE-. June 29,1951, [April 1, 1950] No. 8227/50. Class 136 (i) A crash guard for a motor cycle comprises a frame 10 having upper and lower parts 11, 12 connected by depending portions 13 and provided with members 16, 22 for attaching the guard to the front main down tube 17 and a longitudinally extending tube 23 respectively, the members 16, 22 being adjustable along the length of the tubes 17, 23 and also adjustable angularly about an axis transverse to the guard. The attachment member 16 is pivoted at 15 to lugs 14 on the upper part 11 of the frame 10. The lower part 12 of the frame is provided with lugs 18 pivoted at 19 to the front ends of a pair of metal links 20. The rear ends of the links 20 are pivoted at 21 to the attachment members 22. Specification 634,838 is referred to.
Patent GB-408006-A (GB)
Title: Manufacture of ethyl alcohol
IPC: C07C29/04
Filed: 1932-06-25
Abstract: Ethyl alcohol substantially free from ether is produced by treating a mixture of ethylene and steam with sulphuric or phosphoric acid of 15--60 per cent strength at elevated temperatures and at 1000 lb pressure or more.  The temperature may be 170--300 DEG  C. and the pressure one to several thousand pounds or higher.  The steam is preferably used in excess.  A small proportion of a lithium salt may be added as a promoter. The acid may contain filling material to effect intimate contact, or may be absorbed in carriers such as pumice or silica gel.  In examples, equal parts of ethylene and steam are passed: (1) into 30 per cent sulphuric acid at 255--260 DEG  C. and 1000 lb pressure; (2) into sulphuric acid of 18--20 per cent at 255--260 DEG  C. and 2000 lb pressure.  Specifications 368,051, 368,935, and 370,136 are referred to.
Patent GB-673243-A (GB)
Title: Improvements in removable front-pieces for spectacles
IPC: G02C9/04
Filed: 1950-04-03
Abstract: 673,243. Spectacles. LISSAC, G. April 3, 1950 [Feb. 18, 1950], No. 8313/50. Class 97 (i). A front piece comprising transparent or shielding member and a nose bridge and adapted to be fitted to ophthalmic spectacles is curved transversely to a greater degree than the spectacles so as to engage the latter only along a line situated at or near the outer ends of the spectacles to be held in position by fixed divergent hooks adapted to engage over the spectacle frame in both sides of the nose bridge. As shown, the lenses or screens 1, 2 are formed by a metal support 3 forming a bridge 4 and having secured thereto resilient metal hooks 5 having ends 6 for engaging the spectacle lenses. The ends 7 of the hooks form means for attaching the lenses 1, 2 to the support 3. Alternatively separate attachment means may be provided. The screen may be wider than the spectacles with which it is to be used. Alternatively the screen 1, 2 may be joined by an integral bridge. The lenses or eye-pieces may be carried in rims.
Patent GB-936853-A (GB)
Title: Improvements in or relating to vehicle door fastening devices
Inventor: JEAVONS PHILIP SWINGWEOOD
IPC: E05B65/26
Filed: 1959-03-11
Abstract: 936,853. Latches. WILMOT-BREEDEN Ltd. March 4, 1960 [March 11, 1959], No. 8327/59. Class 44. A vehicle door fastening device, of the construction as described in Specification 926,955, is of the type which is operated by means of a push-button located in or near a door handle, comprising a push - button assembly which is separate from a main body of the device but is formed for sliding connection therewith during fitting, such connection serving to locate the assembly relative to the main body in the axial and operating direction of the pushbutton. During assembly, lugs 33 on the end cap 28 of a pushbutton housing 26, are slid into recesses in a back-plate 18 to locate the housing. In operation, either the push-button 17 mounted in the housing 26, or an interior pivoted handle 19, which both operate on a push-button stem 16, is actuated against the pressure of a spring 25 to cause an arm 30 of the stem 16 to rotate a lever 15. This lever 15 is connected to a pivoted latch 5, Fig. 5, and rotation of the lever against the action of a torsion spring 8 releases a keeper attached to a stationary part of the vehicle.- A detent member 9 holds the device in an uncoupled position until reclosing of the door.
Patent GB-1049451-A (GB)
Title: Improvements in and relating to transistor logical elements
IPC: H03K19/09
Filed: 1965-02-26
Abstract: 1,049,451. Transistor switching circuits. HUGHES AIRCRAFT CO. Feb. 26, 1965 [March 30, 1964], No. 8408/65. Heading H3T. At least one charge storage diode 14 forwardly biased by resistors 29, 10, 33 is connected in the input circuit of a common emitter transistor stage whereby the discharge current of the diode may be used to provide a reverse current surge for switching off the transistor. In the circuit shown earthing the input terminal 60 of unit 52 cuts off the transistor 24, the charge storage diode 14 allowing a reverse current surge to discharge rapidly the transistor base. The transistor may have multiple inputs to provide NAND logic (Figs. 1A and 1B, not shown) and may be paralleled at its output with others to provide increased " fan-in " (Fig. 2, not shown). In Fig. 5, two circuits 52, 54 are cross-coupled to provide a bi-stable circuit and two further circuits 56, 58 provide " set " and " reset " facilities. Assuming that the " set " terminal is earthed and that transistor in 56 is non-conducting and 58 conducting, the positive going part of the input clock pulse at 66 cuts off the transistor in 58 since its base is held at earth potential by the " set " signal. The collector potential accordingly rises switching on the transistor in 56, its collector potential being applied to the base of the transistor in 58 to maintain it off. The subsequent negativegoing portion of the clock pulse pulls the collector of the now conducting transistor in 56 to a negative value. This is applied through diodes 62, 63 to the base of the transistor in 52 to change over the state of the circuits 52, 54 or to confirm its state if it is already there.
Patent GB-356822-A (GB)
Title: Improvements in apparatus for use in surveying and like operations
IPC: G01C11/02
Filed: 1930-03-17
Abstract: 356,822. Photographic surveying. SWARBRICK, J., 39, Maddox Street, London. March 17, 1930, Nos. 8481 and 13534. [Clases 97 (ii), 97 (iii), and 98 (i).] Apparatus for producing a photographic image from which the angles of altitude and azimuth of points in the image may be read comprises a camera stationary or rotatable about the centre of the iris of the lens or the nodal point combined with a spherical grille having marks indicating angles of altitude and azimuth as seen from the centre of the iris or nodal point or combined with a plane or curved surface on to which marks indicating the above angles have been projected. In the latter case the grille may be placed in contact with the sensitive film or suitably placed outside the camera. Panoramic or kinematograph cameras may be used. In a modification a plane surface on which have been marked the angles as seen from the centre of the iris or nodal point of the lens when a photograph was taken may be laid over the developed photograph. In a further modification a rotatably mounted camera may be used in combination with a grille marked with indications of equal areas of the plane under survey. In the form shown in Fig. 1, the camera a is pivoted on an axis b in a frame c rotatable about a vertical axis on a tripod. The point of intersection of the two axes of rotation coincides with the centre of the iris of the camera lens and is also the centre of a spherical grille i on which lines of longitude and latitude are marked. Fig. 8 shows a frame to be applied to the camera in place of the dark slide or film in order that the device may be used as a theodolite. An eye piece u, v co-operates with the camera lens to form a telescope and cross-hairs y are provided in an adjustable collar x. The Provisional Specifications describe (1) . the use on aircraft of cameras and grilles each mounted in gimbals and provided with balance weights, (2) transparent sheets marked with indications of equal areas of the plane under survey for application to developed photographs, and (3) plotting paper marked with indications of angles of altitude and azimuth for use in preparing astronomical charts.
Patent GB-374543-A (GB)
Title: Improvements in or relating to hauling, lifting and the like devices suitable for withdrawing pit props and the like
IPC: E21D15/60
Filed: 1931-03-20
Abstract: 374,543. Wire and like strainers. HENSON, W. S., 4, Lingspit Yard, Temple Normanton, Derbyshire. March 20, 1931, No. 8566. [Class 45.] A tensioning device for withdrawing pit-props comprises a roller chain provided with a load hook and moved intermittently through a channel frame by a lever, one end of which is mounted by a link-swung fulcrum on the frame so as to engage and disengage the chain. As shown, the lever M is pivoted at L on a pair of links K, pivoted at J on the channel frame B, and is provided with teeth M<1> which engage the chain E. On clockwise rotation of the lever M, the chain is moved forward one step and held by a spring pawl N. The lever is now disengaged from the chain by anticlockwise rotation of the links K and returned to its initial engaged position. A bolt Q prevents accidental withdrawal of the pawl N.
Patent GB-472488-A (GB)
Title: Improved rotary compressor for varying loads
IPC: F04C28/08
Filed: 1936-03-23
Abstract: 472,488. Meshing - screw compressors; gas turbines. AKTIEBOLAGET MILO. March 23, 1936, No. 8618. Convention date, March 28, 1935. [Classes 110 (ii) and 110 (iii)] One or more compressors supply air to a combustion turbine, each compressor having a byepass to atmosphere valve, the opening of which is controlled in accordance with the load on the plant. A double - rotation turbine 1 drives electric generators 4, 5, and screw compressors 6, 7. The latter have rotors 13, 14, preferably driven without making contact, which are geared together by gears 19, 20. A piston 24 is fitted to the shaft 21 for pressure-equalization purposes. A byepass valve 29 is normally kept in the position shown by an energized solenoid 33 overcoming the resistance of a spring 35. The solenoid is connected with the generator 4. Upon a fall in load on the latter, the spring tends to raise the valve 29 and a less quantity of air is compressed and fed to a combustion chamber 40. Fuel is supplied to the chamber by a gear pump 43, the quantity being controlled by a centrilugal governor 47 and double-piston slide 48. The compressed air is supplied partly for combustion purposes, to the nozzles 45, and partly to a jacket 42 for cooling purposes. If a supply of air at constant pressure is required at the combustion chamber, the outlet ports of each compressor may be arranged to be opened later as the valve 29 opens. Fig. 2 shows another arrangement in which an axial-flow turbine 59 drives a generator 60 and two compressors 61, 62, which are arranged in series to supply air to the combustion chamber 40. In this case the valve 29 is held closed against spring-pressure, by the pressure of air in the supply pipe 67. A hydraulic coupling 63 is supplied by a pump 85, but when the pressure in the pipe 67 talls, a piston valve 75 moves to the right and at a predetermined pressure cuts off the supply pipe from the pump and the liquid is byepassed back to a container 84 which, actually, is below the coupling so that liquid may flow under gravity from the coupling. If the load on the generator is reduced the fuel supply is throttled by the valve 48, and the valve 29 commences to open. When the compressor 62 is uncoupled, a non-return valve 91 opens automatically. Other means may be used to control the plant in accordance with the load, such as the temperature of the driving medium. The valve 29 may be actuated manually.
Patent GB-1544449-A (GB)
Title: Electronic timepiece apparatus
IPC: G04G5/04
Filed: 1976-03-04
Abstract: An electronic timepiece apparatus which comprises an electronic time-counting circuit including an oscillator generating standard clock pulses; time-setting means including an actuating switch for correcting the value of a count made by the electronic time-counting circuit; means for correcting the value of a count made by the electronic time-counting circuit for each prescribed period in accordance with the amount and direction of correction determined as the result of comparison by the time-setting circuit between a given point of time and the correct time; and display means for indicating a given point of time just counted by the electronic time-counting circuit.
Patent GB-668391-A (GB)
Title: Improvements in or relating to piezo electric crystal oscillators
Inventor: MORTLEY WILFRID SINDEN
IPC: H03B5/34
Filed: 1949-03-30
Abstract: 668,391. Valve generating circuits. MARCONI'S WIRELESS TELEGRAPH CO., Ltd. Feb. 7, 1950 [March 30, 1949], No. 8671/49. Class 40 (vi). In a piezo-electric crystal oscillator circuit the crystal is coupled to the driving valve over a line three-quarters of a wave-length long, the grid of the valve being connected to a point a quarter, and the anode at a point three-quarters of a wavelength from the crystal, or vice versa. The line may be artificial and may have uniform constants or be of the " tapered " type; it is stated that shunt elements adjacent the crystal or half-a-wavelength away are not critical in value and may be omitted. A resistance shunted across either of these points in the line serves to suppress unwanted modes of oscillation, while the desired frequency may be adjusted over a limited range by means of a variable impedance between the cathode and either grid or anode of the valve. Networks suitable for the purpose are described in the Specification, and include a tapered low-pass filter, Fig. 2, in which the crystal is connected across points 1, 2 and the grid, anode and cathode of the valve to points 3, 4, 5, respectively. Alternatives comprise the corresponding high-pass filter, Fig. 3 (not shown), and various derived networks of mixed type utilizing both low- and high-pass sections, Figs. 4-7 (not shown).
Patent GB-888977-A (GB)
Title: Improvements in or relating to a drive mechanism
Inventor: LAXO ED
IPC: F16D47/04
Filed: 1960-03-11
Abstract: 888,977. Clutch combinations. BLISS CO., E. W. March 11, 1960, No. 8736/60. Class 80 (2). A pair of aligned shafts 11, 12 are driven by a common pulley 13 through a pair of electromagnetic friction clutches 16, 50, arranged in parallel, and a ratchet clutch 25 comprising an outer member 29 connected to shaft 12 and carrying a spring-loaded pawl 32 engageable with either of two diametrically opposite notches 27 in an inner member 26 secured to shaft 11. With clutch 16 engaged and clutch 50 released drive from pulley 13 is transmitted to shaft 11 and the latter drives shaft 12 through ratchet clutch 25, but with clutch 50 engaged and clutch 15 released drive is transmitted to shaft 12 only, through the outer ratchet clutch member 29 which overruns the inner member 26. Owing to the disposition of notches 27 in member 26 correct relative positioning and timed relationship of shafts 11, 12 is ensured. The arrangement is primarily intended for use in a can body-making machine, shaft 11 being connected to the side seam forming element and shaft 12 to the solder roller, to enable the latter to continue revolving in the event of a jammed can body making it necessary to stop the seam-forming element.