baber/WOPTO huggingface dataset:
Patent GB-323624-A (GB)
Title: Improvements in or relating to machines or apparatus for grading eggs
IPC: B07C5/22
Filed: 1928-12-14
Abstract: 323,624. Readman, J. N., Roberts, R. O., and Swift, H. Dec. 14, 1928. Separating or sorting by weighing.-In an egggrading machine of the kind wherein the eggs are carried upon trays pivotally mounted on an endless conveyer and are deposited through openings according to their weight, the openings are controlled by arms mounted beneath the openings and balanced by weights which are adjustable to allow eggs exceeding a certain weight or grade to pass through. The eggs are placed upon trays 7 pivoted to transverse spindles 6 connecting the side chains 4 of an endless chain conveyer driven intermittently by a crank handle or by power. The trays are supported by a platform 2 having holes 3 therein into which project arms 16 pivoted on anti-friction bearings 18 and loaded by adjustable balance weights 20. As the trays pass over the arms 16 the eggs, if of sufficient weight, depress the arms and pass through the holes on to an endless belt conveyer which delivers the eggs to four compartments at the side of the machine according to their weight.
Patent GB-1391714-A (GB)
Title: Downward-discharge vessels for molten material
IPC: B22D41/24
Filed: 1972-08-08
Abstract: 1391714 Furnace pouring apparatus STOPINC AG 30 July 1973 [8 Aug 1972] 36921/72 Heading F4B A downward-discharge vessel for molten material, e.g. casting ladles, comprises a refractory lining 11, a ring 12 mounted within the lining of refractory material and a bush 13 also of refractory material mounted in the ring and having a bore 14 for the discharge of the contents of the vessel, wherein the upper end surface of the bush is below the surface of the lining 11 and also of the ring and is covered and protected by overlying refractory material. As shown, the protection comprises a member 22 of refractory material which is applied as a last operation after the ring 12, bush 13 and valve plates 15, 17 and discharge nozzle 19 are positioned. The member 22 is formed from an annular ring 22<SP>1</SP> of plastic refractory material which is positioned on a lance 24 and pushed into position by deformation. In a modification the protective member 22 comprises a suitably shaped solid refractory part which is introduced into a frustoconical cavity at the ring block 12 by a lance. The bore of the member may be smaller than the bore of the bush to constitute a throttling member during the initial pouring operation but which is subsequently widened by attrition. In a further form, the ring block may be formed of an upper and lower part, the upper surface of bush being coincident with the joint line. The valve may be of slide gate type as shown having a recilinear, rotary or partrotary movement.
Patent GB-820107-A (GB)
Title: Improvements in or relating to form dressing apparatus
Inventor: WALLACE DONALD J
IPC: B24B53/07
Filed: 1957-12-02
Abstract: 820,107. Trueing grinding wheels. WHEEL TRUEING TOOL CO. Dec. 2, 1957, No. 37499/67. Class 60. Apparatus for form trueing the peripheral surface of a grinding wheel 10 comprises a form dressing tool 25 which has an arcuate abrading face 28 having a non-rectilinear transverse contour the reverse of that to be imparted to the grinding wheel and peripheral lines of substantially true circular arcs centred on the axis of the tool, the tool being muonted for pivotal movement about its axis whereby its arcuate face moves relative to that of the rotating grinding wheel. The tool is of segmental cylindrical shape and carried on a support 26 with its axis parallel to that of the grinding wheel by a bolt 30 about which it can be oscillated by an arm 38 connected to a link 33 secured to the tool. The arm is reciprocated by hydraulic, electric, cam or other mechanical means and the support moved to feed the tool into contact with the grinding wheel so that the grinding wheel contour is formed to a shape complementary to that of the tool. The surface of the tool is embedded with a layer of diamonds or the like varying in size from those small enough to pass through a 400 mesh screen to diamonds as large as 50 per carat, such layer being preferably of single particle thickness.
Patent GB-916326-A (GB)
Title: Improvements in or relating to nuclear reactors
Inventor: BAUER STEFAN GEORGE
IPC: G21C7/22
Filed: 1959-11-05
Abstract: 916,326. Controlling reactors. ROLLSROYCE Ltd. Nov. 2, 1960 [Nov. 5, 1959], No. 37641/59. Drawings to Specification. Class 39 (4). In a steam-cooled heavy water moderated reactor, for use in a marine vessel, means are provided to prevent the reactivity rising above the critical value in the event of the vessel sinking. A heated liquid, inert to sea-water, is injected into the reactivity controlling channels which solidifies and prevents the entry of seawater. The solidifying liquid is a high melting point hydrocarbon, for example, diphenyl, metaterphenyl or ortho-terphenyl to which a neutron absorber is added, for example an organoboron, organo-lithium or organo-cadmium compound. Alternatively, a finely divided absorber may be dispersed in the hydrocarbon. Specification 916,325 is referred to.
Patent GB-931349-A (GB)
Title: Improvements in or relating to parametric reactance amplifiers
IPC: H03F11/00
Filed: 1961-10-20
Abstract: 931,349. Parametric amplifiers. TELEFUNKEN PATENTVERWERTUNGS G.m.b.H. Oct. 20, 1961 [Oct. 22, 1960], No. 37751/61. Class 40 (9). In a parametric amplifier, the pumping frequency P is constant and the signal frequency S is variable. The signal and idler circuits include inductors L s , L H  and condensers C s , C H  which are ganged so that the sum of the signal and idling frequencies is constant (i.e. S + I = P). The input signal source G s  and the output load G A  are inductively coupled to inductor L s . A reactance diode D is excited at the pumping frequency P by an oscillator R 0  to which circuit K is tuned. The oscillator operates at the frequency to which the #-network C p1 , C p2 , L p  is tuned.
Patent GB-855072-A (GB)
Title: Indicating system for books
IPC: B42F21/00
Filed: 1956-12-11
Abstract: 855,072. Indexing books. AKAO, Y. Dec. 11, 1956 [Dec. 23, 1955 ; Jan. 19, 1956(2) ; Feb. 11, 1956], No. 37784/56. Class 16. A book 1, Fig. 1, has vertically spaced groups 5 of horizontal or vertical lines printed on the free ends 4 of the leaves to indicate sections of the book and an index sheet 7, Fig. 3, on both side edges of both faces of which are printed section indicia 8 at the same vertical position as the corresponding groups 5 of lines on the free ends of the leaves. In use, the sheet 7 is inserted in the book at random, the group of lines horizontally aligned with the indicium denoting the required section on the sheet 7 is found and the book is opened at that part. An indicium 6 may be printed on each page 3 to denote the section to which it belongs, and groups of vertical lines may be substituted for the horizontal lines shown.
Patent GB-523333-A (GB)
Title: Improvements in caravans and like trailer vehicles
IPC: B60P3/34
Filed: 1938-12-31
Abstract: 523,333. Caravans. ENSOR CARAVANS, Ltd., and ENSOR, C. A. Dec. 31, 1938, No. 37953. [Class 108 (i)] A caravan or like vehicle is provided with a supplementary chamber adapted to be collapsed against the side of the main body and it may also have a further chamber or annexe which may be collapsed on to one side of the supplementary chamber. The supplementary chamber or kitchen 2, as shown, comprises a pair of sides 3, 4 foldable one upon the other and together, about a hinge 3a upon the side of the body 1 and a pair of sides 5, 6 similarly foldable. A roof flap 9 and a corresponding floor flap are hinged to the main body so as to fold one against the other and upon the sides after these have been folded. Access to the kitchen 2 is obtained from the body 1 and by a door 8 in the side 6. An annexe comprises sides 12, 13 foldable one upon the other and upon the side 3 of the kitchen and a door 14 which can be swung against the side of the body 1 and which in that position may close a cupboard in the body 1. A roof flap 15 for the annexe is hinged to the side 3. In a modification, the three sides of the annexe fold upon one another and against the side 3. According to the Provisional Specification the annexe may be independent of the supplementary chamber and may fold similarly to that chamber. Also the side panels of the chamber may be divided horizontally and the parts be hinged to the roof and floor flaps respectively.
Patent GB-1004174-A (GB)
Title: Toilet preparations
IPC: A61K/
Filed: 1962-10-09
Abstract: Hydrogenated dimerized terpene having a specific gravity of 0.916 to 0.920 is prepared by treating dipentene with an isomerization catalyst such as acid or active clay containing zinc chloride or aluminium chloride at 170-180 DEG  C., followed by hydrogenation and fractional distillation at 210-235 DEG  C./4 mm.  Hydrogenated trimerized terpene of specific gravity 0.918 to 0.925 is produced by treating dipentene with an isomerization catalyst of sulphuric acid, ferric sulphate or aluminium sulphate at 181-190 DEG  C., followed by hydrogenation of a distillate boiling at 190-280 DEG  C./4 mm.ALSO:A stable, non-irritant, toilet preparation comprises one or more completely hydrogenated polymers of mono and/or diterpenes, said hydrogenated polymers having a specific gravity of from 0.915 to 0.930.  The hydrogenated terpene dimers and trimers exist in various forms, ranging from highly viscous and adhesive liquids to mobile oils.  They may be mixed with each other and other conventional ingredients to provide a wide range of toilet preparations.  Examples are given of a cold cream, emulsion, cleansing cream, rouge, hair cream, hair pomade, hair oil, mascara, hair lacquer, nail enamel and cosmetic.
Patent GB-369992-A (GB)
Title: An acoustic diaphragm
IPC: H04R7/12
Filed: 1930-12-19
Abstract: 369,992. Diaphragms. PER S S 0 N , E. O., Brunny, Nyhamnslõge, Sweden. Dec. 19, 1930, No. 38291. Convention date, Dec. 19, 1929. [Class 40 (iv).] In an acoustic diaphragm the ratio of stiffness to mass per unit of surface diminishes continuously and uniformly radially from the centre to the edge of the diaphragm. The diaphragm, Fig. 2, comprises a support a of uniform thickness, or of thickness decreasing towards the periphery, made of a stiff material, e.g. iron, steel, or hardened celluloid, in combination with a lining c of heavy material of little stillness, e.g. rubber, the thickness of which increases from the centre to the periphery. In a modification, Fig. 4, the diaphragm comprises a straight or curved conical support e, e.g. of hardened celluloid, of uniform or decreasing thickness and a rubber lining f of increasing thickness. The reduction of stiffness of the support from the centre outwards may be obtained by graduated tempering, compression, chroming, or impregnation, the material being, for instance, gauze or other light fabric impregnated with gelatine, the degree of dilution of the gelatine bath being progressively changed during impregnation. Instead of having a continuous curved conical surface, the support e, Fig. 4, may be formed by a series of small conical surfaces having a taper increasing from the centre to the periphery and these surfaces may be connected alternately to form a series of re-entrant frusta.
Patent GB-814800-A (GB)
Title: Combined acceleration indicator and timer
Inventor: UECKER NORMAN CARL
IPC: G04F3/06
Filed: 1957-12-10
Abstract: 814,800. Accelerometers. LEAK Inc. Dec. 10, 1957, No. 38297/57. Class 106 (3). An instrument for comparing change in acceleration of a moving vehicle with an elapsed time interval comprises an accelerometer including a mass and means for guiding the mass in a predetermined path when subjected to an accelerative force, and a time-indicating device including an index movable in a path parallel and adjacent to the path of the mass, whereby time correspondence between the mass and the index may be visually co-ordinated. The accelerometer comprises a metal ball 32, Fig. 3, supported on a compression spring 33 in a transparent tube 31, Figs. 2 and 3, having a scale 34 graduated in G's and supported between a compression spring 43 and a resilient pad 26 on a slidable support 38 vertically adjustable by a screw 41 and nut 42. The index 62 is carried on a shoe 63 of Lucite threadedly engaged with a lead screw 58 rotated by a constant-speed electric motor 55 at a speed controlled by a potentiometer 81. Limit switches 65, 73 for actuation by the shoe 63 are adjustably mounted on a bracket 66 to set the index in its initial position and to arrest it at its bottom limit respectively. A leaf spring 76 urges the lead screw 58 upwardly to control backlash between it and the shoe 63. A lamp 83 is provided to indicate that the motor current is on and a lamp 46 and a further lamp within the shoe to facilitate reading of the scale through a window in the front wall of the casing of the apparatus.
Patent GB-1383458-A (GB)
Title: Dynamic convergence correction device
IPC: H04N9/28
Filed: 1973-08-13
Abstract: 1383458 Cathode-ray tube circuits HITACHI Ltd 13 Aug 1973 [14 Aug 1972] 38308/73 Heading H4T - Residual dynamic convergence errors in the corners of the screen of a colour television receiver (Fig. 2) are corrected by producing a current in a convergence coil comprising a horizontal frequency sawtooth wave having a dead central zone amplitude modulated by a vertical frequency sawtooth wave having a dead central zone as shown in Fig. 5. The dead zone in the sawtooth waves is produced by means of the oppositely poled diodes 1, 2 (Fig. 6) the characteristic of which is shown in Fig. 1. As shown in Fig. 8, a parabolic wave derived from the junction between the, horizontal deflection coil 8 and the "S" capacitor 9 is differentiated by resistor 10 and capacitor 11 to produce a sawtooth voltage 13 which is supplied via the oppositely poled diodes 14, 15, producing the waveform 18 having a dead zone, to one input 17 of a balanced modulator 19 to a second input of which is supplied a vertical frequency sawtooth voltage 29 having a dead zone produced by the action of the oppositely poled diodes 23, 24 on a vertical frequency sawtooth voltage 22 derived from the vertical deflection 20. The modulator then produces the output voltage waveform 31 which produces the current waveform of Fig. 5, in the convergence coil 33. The latter corrects misconvergence of the red beam (see Fig. 2) and to effect correction in respect of the green beam a similar circuit is employed but with the phases of the sawtooth voltage waves 13 and 22 shifted by 180 degrees. Adjustment of the correction at the upper and lower sides of the screen may be effected by resistors 25, 26 and adjustment at the right and the left hand sides of the screen may be effected by providing adjustable resistors in series with the diodes 14 and 15. Each "leg" of the parallel connected diodes may comprise a plurality of diodes instead of a single diode.
Patent GB-1060228-A (GB)
Title: Improvements in or relating to self-destroying projectile fuzes
IPC: F42C15/22
Filed: 1964-09-22
Abstract: 1,060,228. Ammunition fuzes. RHEINMETALL G.m.b.H. Sept. 22, 1964 [Nov. 23, 1963], No. 38629/64. Heading F3A. Projectile fuze is provided with self-destruction means and comprises a two-part casing 1, 2 housing an axially movable firing pin 7 immobilized by a radially displaceable slide 10, Fig. 1, adjacent an insert 11 in which is an oblique channel 14 leading to an opening in the slide. Furthermore, within the channel is a movable element 15 restrained by a bolt 19 until centrifugal force brings about release of the bolt, whereupon the element moves along the channel and enters the slide causing unbalance thereof with resultant radial movement of the slide and release of the firing pin. The bolt 19 securing the element or ball 15 is initially held in position by a coiled spring metal band 18, the inner end of which is secured to a bush 17 surrounding the reduced end of the insert 11. When a rotated projectile equipped with the fuze is fired from a gun, centrifugal force causes the band 18 to expand and release the bolt 19, which is of low specific gravity, e.g. a plastics material. At the same time, due to centrifugal force, a spring band 21 expands and allows bolts 22, Fig. 2, locking the slide to move outwards and release the slide. Since the channel 14 runs obliquely, centrifugal force causes the ball 15 to move forwards and enter the bore 13 in the slide. The position of the centre of gravity of the slide then being altered, the slide moves radially and releases the pin 7, the fuze then being armed for direct action on impact. If impact does not occur before centrifugal force has fallen to a certain predetermined value, balls 5, which support a striker 4, move inwards so that a spring 6 can thrust the striker against the firing pin to operate the fuze.
Patent GB-1177744-A (GB)
Title: A Gear Forming Machine
IPC: B23F23/12
Filed: 1968-08-13
Abstract: 1,177,744. Gear-cutting. MICHIGAN TOOL CO. 13 Aug., 1968 [20 Oct., 1967], No. 38698/68. Heading B3L. A machine for form-cutting simultaneously all the teeth of a gear 15 has the workpiece mounted on a reciprocating ram 14 while tho cutters 14 are radially disposed and reciprocable under the control of a drum cam 32 so as to cut the teeth on the advance strokes of the ram, being relieved from the work on the retraction strokes thereof, the cam 32 being designed and arranged to feed the cutters 14 to varying depths during the cutting stroke so that tapered, crowned and run-out gears may be produced. The drum cam 32 is rotated in synchronism with the strokes of the crank-driven ram 16, and controls the transverse movement of a cam follower 43 on a member 41 which has a wedge portion 44 co-operating with a wedge portion 45 of a vertically movable head assembly 46. Movement of the assembly 46 is transmitted to a vertically reciprocable sleeve 21 which carries a tool feed cone 17 and retractor ring 18 which control the tool movements. Incremental feed of the tools to give greater depth of cut is effected by an infeed cam 49 driven by a ratchet 52 and pawl 53 which operate once each stroke of the ram 16 under the control of a cam 31. Adjustment of the tool position, e.g. initially or after sharpening, is effected by means of an adjustable Z-bar 47 in the head assembly 46. Cam 32 is replaceable according to the type of gear to be machined and the profile of each cam 32 is designed to ensure that the tools are positioned at appropriately varying radii during the cutting, strokes.
Patent GB-1247903-A (GB)
Title: A method of producing cast forms from preformed panels
Inventor: BOWERS IAN FREDERICK
IPC: B29C33/38
Filed: 1968-06-10
Abstract: 1,247,903. Moulding moulds. PRESSED STEEL FISHER Ltd. 10 June, 1969 [10 June, 1968; 14 Aug., 1968], Nos. 27551/68 and 38785/68. Heading B5A. A vacuum forming tool 21 is cast from refractory cement, plaster of Paris, or synthetic resin, against a configural moulding surface comprising a preformed sheet steel panel 14, which is located in a mould box 11 above foamed synthetic plastics material 18 which at least partially comprises a closed or mainly closed cell formulation which has been formed within the mould box 11 containing the panel 14. In the embodiment shown, the panel 14 is tack welded by brackets 17 to a sheet steel mould base 13 and the material 18, which wholly comprises a closed or mainly closed cell urethane foam, is trimmed by a knife or saw, after removal of the mould box sides 12, in the regions in which during the forming thereof it rises around the panel sides and above panel holes 15 and 16. Venting passages in the tool 21 are formed by steel rods 19, which locate through the holes 15 and support tubes 20, either via blobs of petroleum jelly, or via spring contact therewith if the rods 19 are bowed. After replacing the mould box sides 12 and spraying the exposed surfaces of the panel 14 and foam 18 with silicone release agent, the tool 21 is cast from refractory cement poured into the mould box and intially vibrated to remove entrapped air. In an alternative embodiment, the brackets 17 are replaced by a packing of adhesive coated expanded polystyrene beads, and the closed or mainly closed cell formulation is introduced around the sides and through the holes in the panel 14 to fill any remaining voids.
Patent GB-811535-A (GB)
Title: Improvements in or relating to the production of polyvinyl acetate
IPC: C08F6/00
Filed: 1956-12-20
Abstract: Vinyl acetate is stripped from a non-aqueous solution containing polyvinyl acetate, vinyl acetate and a solvent for polyvinyl acetate which boils below 150 DEG  F. at atmospheric pressure, by causing the solution to flow down a distillation zone, such as a column containing plates or packing, and introducing the vapour of the stripping agent which is a solvent for polyvinyl acetate into the lower part of the distillation zone while maintaining the pressure in the zone at a value between 1 and 14 atmos., preferably between 2 and 10 atmos.  Methyl alcohol is the preferred stripping agent.  Vapours comprising vinyl acetate and the stripping agent are withdrawn from the head of the column, while a solution of polyvinyl acetate, depleted of vinyl acetate, is withdrawn from the base.  A polymerization-inhibitor, such as an alkyl nitrite, a mixture of sulphur dioxide and molecular oxygen, thiourea or elemental sulphur, is added to the solution prior to the stripping operation; or alternatively, provided the inhibitor is volatile, it may be introduced into the column with the vapour of the stripping agent.  A preferred inhibitor is obtained by dissolving nitric oxide or nitrogen dioxide in methanol.  Other stripping agents referred to are: ethyl alcohol, the propyl alcohols, and low-boiling ethers, esters and hydrocarbons.ALSO:The polymerization of vinyl acetate is inhibited by addition of sulphur dioxide or an alkyl nitrite.  In general, 500 to 2000 p.p.m. of sulphur dioxide per part of vinyl acetate is sufficient for stabilization.  Sulphur dioxide is most efficient in the presence of a small concentration of molecular oxygen, e.g. 5 to 400 p.p.m. by weight of oxygen based on the weight of vinyl acetate.  The alkyl nitrite is preferably mixed with a lower aliphatic alcohol; and a suitable composition is prepared by dissolving nitric oxide or nitrogen dioxide in methanol.  These inhibitors are effective at high temperatures such as are used in the stripping of vinyl acetate from solutions of polyvinyl acetate (see Group III).  Other inhibitors referred to are elemental sulphur and thiourea.
Patent GB-1067154-A (GB)
Title: Foldable warning sign for motor vehicles
Inventor: MAIER HANS ULRICH
IPC: B60Q7/00
Filed: 1963-10-03
Abstract: 1,067,154. Road traffic signs. BP BENZIN und PETROLEUM A. G. Oct. 3, 1963 [Nov. 21, 1962], No. 38940/63. Heading E1G. The container for a foldable road traffic sign comprises two cooperating parts which may be used as separate feet to support the unfolded sign. The sign has a base section 1 to which sections 2 and 3 are hinged on opposite sides, the sections 2, 3 being slotted to lock together at the apex of the triangle. The container parts 4. 5 are divided diagonally and the shorter sides are notched to mate with notches in the base section 1 when used as supports. The sign may be made of red painted plastic.