baber/WOPTO huggingface dataset:
Patent GB-848892-A (GB)
Title: Safety fluid-pressure relief device
Inventor: COFFMAN ROBERT SAMUEL
IPC: F16K17/16
Filed: 1957-01-28
Abstract: 848,892. Pressure-relieving devices for fluids. BLACK, SIVALLS & BRYSON Inc. Jan. 28, 1957, No. 3002/57. Class 135. A safety pressure relief device comprises a dome shaped slotted rupture member and a dome shaped rupturable sealing member positioned with respect to each other so that the rupture member protects the sealing member from premature rupture and the sealing member provides a seal for the device. The device comprises a slotted dome shaped rupture disc 10, a dome shaped sealing member 11 and a plurality of protection elements 12 made from relatively thin material and positioned between the slotted rupture disc 10 and the sealing member 11 to protect the sealing member from cutting itself on the sharp edges of the slots 13 in the disc 10. Where a vacuum may occur on the underside of the sealing member a support member 22 and disc 23 may be mounted below the sealing member, an additional set of protection elements 26 being utilised to protect the sealing member from the sharp edges of the slots 25 in the support member 22. The various elements constituting the safety device are clamped between two flanges associated with the relief outlet of the vessel to be protected. The sealing member may be made of corrosive resistive material to protect the pressure side of the rupture member from corrosion. The disc 23 is retained by a plurality of clips 24 secured to the member 22.
Patent GB-1186792-A (GB)
Title: Passive Intrusion Detecting System
IPC: G08B13/19
Filed: 1968-01-19
Abstract: 1,186,792. Intruder alarms. HUGHES AIRCRAFT CO. 19 Jan., 1968 [27 Jan., 1967], No. 3009/68. Heading G4N. [Also in Division G1] Moving objects or persons intruding in an area are detected by two infra-red detectors having separate, substantially parallel adjacent fields of view; an alarm circuit responds to a sequence of signals from the detectors as would be created by an intruder crossing from one field of view to the other and is not responsive to the simultaneous occurrence of signals as would be created by interfering changes in ambient infra-red radiation. Fig. 1 shows one detector and its optical system where radiation is focused upon a thermopile 10 sensitive to 8-15 Á by curved mirrors 24 and 26. Filters may be used to restrict the radiation bandwidth. Two detectors 40 and associated alarm circuitry are shown in Fig. 3 where a signal from a thermopile is chopped (42) and synchronously detected (44) to operate a generator 46 giving a pulse of predetermined duration. Gate 48 in the opposite channel is thereby opened and remains open for a predetermined period after the pulse from generator 46 has disappeared. A signal now from the thermopile in this opposite channel generates a pulse at 46 which passes through gates 48, 50 and 55 or 57 to operate the alarm 56. If the thermopiles deliver signals concurrently or signals of such a short time between them that pulses from generators 46 overlap, inhibit gate 50 is closed by signals over leads 59 and 61 so closing gates 55 and 57 to prevent the alarm operating. The speed range of moving objects within which the system is responsive has the lower limit set by the time that gate 48 remains open in ,response to a pulse from generator 46 and the upper limit set by .the length of a pulse from generator 46. The alarm device indicates which thermopile delivered the first signal of the two and hence the direction of movement of an intruder.
Patent GB-989306-A (GB)
Title: Improvements in semi-conductor devices
Inventor: SINCLAIR WILLIAM DONALD
IPC: H02H7/125
Filed: 1963-01-24
Abstract: 989,306. Semi-conductor devices. ASSOCIATED ELECTRICAL INDUSTRIES Ltd. Jan. 14, 1964 [Jan. 24, 1963], No. 3050/63. Heading H1K. A semi-conductor rectifying element 11 is encapsulated in a housing 14 and has one of its two main electrodes connected electrically to a terminal 15 by means of a fusible link located within the housing 14. The fusible link may take the form of a plurality of flexible copper strips 17, each having an opening 18 therein to produce a region of reduced cross-sectional area. The housing 14 may be filled with an electrically-insulating material, such as powdered alumina or sulphur hexafluoride gas, in order to quench any arc which may be formed on the rupture of the fusible link.
Patent GB-1422922-A (GB)
Title: Process for the production of highly elastic polyurethane foams
IPC: C08G18/72
Filed: 1974-01-23
Abstract: 1422922 Polyurethane foams BAYER AG 23 Jan 1974 [26 Jan 1973] 3050/74 Heading C3R Polyurethane foams are prepared by reacting (a) a polyisocyanate component at least 50% by weight of which is distilled tolylene diisocyanate, (b) a polyether which contains at least two hydroxyl groups and in which at least 10% of the hydroxyl groups are primary, (c) a blowing agent and (d) a chain lengthening or cross-linking agent which is 1-aminopiperazine or 1,4-diaminopiperazine or a hydrazine of the formula wherein R and R<SP>1</SP>, which may be the same or different, each represents a hydrogen atom or an alkyl, alkenyl, cycloalkyl, aryl, aralkyl or acyl group, each of which may be substituted by one or more halogen atoms or nitro, cyano, hydroxy, amino or hydrazino groups or when R<SP>1</SP> represents a hydrogen atom, R may represent one of the following groups wherein Ar represent phenyl; and n is 0 or 1, the reaction being carried out in the absence of polyether-polysiloxane foam stabilizers. Pure tolylene-2,4- or -2,6-diisocyanate may be used as component (a) as may isomeric mixtures thereof. Numerous chain lengthening or crosslinking agents (c) are listed, those used in specific examples being hydrazine hydrate, methyl hydrazine, phenyl hydrazine, 2-hydrazinoethanol, carbohydrazide, 4-hydroxybutyric acid hvdrazide, 6-hydroxycaproic acid hydrazide and N,N<SP>1</SP>-diisobutyl hydrazine. The other reactants and additives are those used conventionally in the art.
Patent GB-1208471-A (GB)
Title: Punching apparatus
IPC: B31B19/14
Filed: 1968-01-19
Abstract: 1,208,471. Punching apparatus. WINDMOLLER & HOLSCHER. 19 Jan., 1968 [13 Feb., 1967], No. 3072/68. Heading B4B.  In a punching apparatus for working on continuously moving webs, e.g. of plastics, in bagmaking machines, a tool carrier 16, 16<SP>1</SP>, 23 is provided which is movable, parallel to itself and to the web 29, on revolvable elements 40, 401, 41 and 41<SP>1</SP> and carries punching tools 33, 33<SP>1</SP> and 35 for producing rows of ventilation holes 45, 46 and a thumb notch 47 in a workpiece section. The punching tools, which may be heated, are adjustably and replaceably mounted on the tool carrier. The tool carrier consists of two frame rods 16, 16<SP>1</SP> which are each mounted for travel in a non-circular path on the elements 40, 40<SP>1</SP>, 41 and 41<SP>1</SP>, and of rods 23 which carry the tools 33, 33<SP>1</SP> and 35 and are adjustably secured to and connect the frame rods. The frame rods are pivoted to the elements 40, 40<SP>1</SP>, 41 and 41<SP>1</SP> by means of brackets 14, 14<SP>1</SP>, 15 and 15<SP>1</SP>, each frame rod having a bracket 14 or 14<SP>1</SP> rigidly secured thereto and a bracket 15, or 151 rotatably mounted thereon. The tools 33, 33<SP>1</SP> have co-operating therewith backing tools 34, 34<SP>1</SP> connected by clamps 38 to rods 27. The tools 33, 33<SP>1</SP> may be replaced by needles. The elements 40, 40<SP>1</SP>, 41 and 41<SP>1</SP> are driven with a periodically changing angular velocity. When the web is tubular, a backing tool mounted on a carrier 36 within the tube co-operates with the tool 35. The carrier is held by external rollers 37. In a severing station 48, Fig. 1, the tubing 29 is cut midway between the rows of ventilation holes 45, 46, and the thumb hole notch 47, which has been only partly but by the tool 35, is completed by the severing cut.
Patent GB-1414944-A (GB)
Title: Pump systems for liquids
IPC: G05D7/01
Filed: 1974-01-23
Abstract: 1414944 Water supplies JACUZZI BROS INC 23 Jan 1974 [30 Jan 1973] 03080/74 Heading E1X [Also in Division F1] A system for pumping water comprises a submersible pump 1, a drive motor 2, a discharge line 5, a service line 9 having branches at the end of which are service valves, a pressure regulating valve (see Fig. 3) between the pump I and the line 9 for reducing the pump pressure to an operating pressure, and a pressure responsive switch 43 which is responsive to a pressure below the operating pressure to start the pump 1, and responsive to a pressure above the operating pressure to stop the pump, the regulating valve isolating the pump from the service line 9 should the switch 43 fail to stop the pump so that unsafe pressures cannot be generated in the service line. The pressure regulating valve is provided with an outlet 48 to whch is connected an expandable cell 45. Specification 1414945 is referred to.
Patent GB-548418-A (GB)
Title: Improvements in or relating to machines for inking edge portions of workpieces
IPC: A43D95/26
Filed: 1941-03-07
Abstract: 548,418. Coating surfaces. UNITED SHOE MACHINERY CORPORATION. March 7, 1941, No. 3096. Convention date, March 8, 1940. [Class 95] A machine for inking an edge portion of a shoe sole is provided with a series of closely spaced inking members 86, yieldable independantly so as to be capable of accommodating themselves to irregularities of the surface to be inked. Either of the two ink receptacles 12 may be moved into the position of use, and the coupling 50 engaged so that the gear pump 46 is driven by the motor 36. The outer wall of each receptacle 12 is provided with a plate 62 having ink supply and return passages 65, 67 connected to passages 70, 68 in the cylindrical horn 14. The inking blades 86 are carried in grooves 84 in an arm 76 within the passage 70, and are yieldingly held against the work by a resilient strip 95, any blades not in use being held retracted by a bar 106. When the work is first applied to the ends of the blades, the arm 76 is tilted about the flange 116 and against the spring-pressed plunger 125, opening the gate-valve 80, 81 and allowing ink to flow to the blades. An edge gauge 92 may be provided.
Patent GB-771812-A (GB)
Title: Preparing ice-colours in textile printing
IPC: D06P1/12
Filed: 1955-02-02
Abstract: Ice-colours are printed on textile materials by applying a composition containing a coupling component, a caustic alkali and a water-soluble diazoamino compound obtained from diazotized 1-amino-3 (or 4) - nitrobenzene substituted by one or two alkyl or alkoxy groups, or by one alkyl and one alkoxy group, and 2-alkyl-amino - 4 (or 5) - sulphobenzoic acid, and then developing with neutral steam in the absence of a volatile organic base. Examples describe the printing of cotton and regenerated cellulose fabrics.  Specifications 715,249, 723,389 and 743,308 are referred to.
Patent GB-569069-A (GB)
Title: Improvements in or relating to the production of aggregates for use in concrete formations
IPC: C04B14/12
Filed: 1943-02-26
Abstract: An aggregate for use in the manufacture of concrete for production of precast or moulded blocks is prepared by firing a mixture of an argillaceous material with a sand to produce a clinker or particles having a cellular structure free from lime or alkalies.  Preferably, white silica sand is employed, but natural or artificially coloured sands may be used.  Firing is effected at 1200-3000 DEG  F. according to the nature of the materials employed.  The aggregate may be further treated by the process described in Specification 569,070. Specification 427,326 also is referred to.
Patent GB-768030-A (GB)
Title: Improvements in reciprocating cutting mechanisms
Inventor: MARPLES DAVID DEREK
IPC: A01D1/00
Filed: 1954-02-03
Abstract: 768,030. Hedge cutters. MARPLES & SON, Ltd., R. M. April 19, 1955 [Feb. 3, 1954], No. 3233/54. Classes 6(2) and 6(3). [Also in Group XXIII] A saw for cutting hedges, timber and other natural growths comprises a blade 31 reciprocated relative to a fixed frame 24 carrying a ramp 25 which guides the material to be cut on to and across the blade when longitudinal thrust is applied to the saw ; for the severance of light growths, knife teeth 33 are formed in the blade 31 on the opposite edge from the sawteeth 32 to co-operate with comb fingers 34 formed in the frame 24. Pointed tips 35 are riveted to the fingers 34 and the saw portion may be detachable from the blade 31. The flanks 38 of the knife teeth are sharpened on alternate sides to a keen edge cutting with a slicing action, and the crests of the teeth have small flat lands, the corners of which cut similarly to sawing. The blade 31 may be guided either by transverse guide screws 40 extending through slots 39 or by bearing surfaces supported in the frame and co-operating with the top and bottom edges of the blade. The sharpening chamfer on the teeth tends to spring them out of line so that the groove cut is slightly wider than the blade and gives the effect of set on the teeth. Under certain conditions the teeth may become burred or bent sideways and, to prevent damage to the frame 24, the walls are locally widened in the region of the teeth, in order to give adequate side clearance. Where there is a high proportion of medium-size stems 45 in the material being cut, every third tooth 44 may be reduced in height as shown in Fig. 8 so as to cut a small groove in a medium-size stem before the stem is more deeply grooved or completely severed by adjacent higher teeth. The crests of teeth 46 may be slightly cupped to assist in severing thicker stems 47. Where the saw is driven by a compressed air motor, the oily exhaust air may pass along the bottom portion 49 of the frame to prevent the ingress of grit, to assist positive ejection of sawdust through holes 37 and to lubricate the knife and saw. The saw may alternatively be driven by electric, internal combustion or other means and may be portable or mounted on a tractor or trailer.
Patent GB-1156294-A (GB)
Title: Machine Tool with Automatic Tool Changer
Inventor: OLLEARO GEORGIO
IPC: B23B39/20
Filed: 1966-08-31
Abstract: 1,156,294. Tool changes in machine tools. ING. C. OLIVETTI & C. S.p.A. 31 Aug., 1966 [2 Sept., 1965], No. 3382/69. Divided out of 1,156,291. Heading B3B. The subject matter is as described in the parent Specification, but the claims relate to a machine tool with an automatic tool changing device, comprising a frame, a single spindle mounted on the frame for rotation about a first axis, in a non-rotatable sleeve which is slidable along the first axis, a tool storage drum on the frame for rotation about a second axis, the drum being hollow frusto-conical shaped, and having a lateral surface tapered with respect to the second axis at a predetermined angle less than 90 degrees, the second axis intersecting the first axis and being inclined with respect to the first axis an at angle which is the complement of the predetermined angle, a plurality of tool holders arranged in the lateral surface with tools whose axes are perpendicular to the surface, drive means for rotating the drum so as to align the tools with the spindle, first power means for axially displacing the sleeve upon alignment of the selected tool with the spindle, means for coupling the spindle to the tool, and second power means for axially feeding the spindle.
Patent GB-809884-A (GB)
Title: Improvements in or relating to electric storage batteries
IPC: H01M4/76
Filed: 1957-01-31
Abstract: 809,884. Battery electrodes. BORIOLO, L. A. Jan. 31, 1957 [Feb. 3, 1956], No. 3414/57. Class 53. A retainer for the active material of a penciltype storage battery electrode is formed with a plurality of pockets 13 from a woven fabric of acid-resistant thermoplastic resin which is shrunk and hardened by a thermal process about cylindrical dies temporarily introduced into the pockets. The thermoplastic material may be an acrylic resin or a copolymer of vinylchloride or of acrylonitrile. The thermal process preferably includes heating the material to just below its softening-point. As shown, the retainer is formed from two pieces of fabric 11, 12 which are woven together with the weft or warp threads of one piece being crossed to the other piece along the junction lines 10 between the pockets.
Patent GB-126093-A (GB)
Title: Apparatus for Macerating Bagasse.
Inventor: HERRIOT WILLIAM SCOTT
IPC: C13B10/04
Filed: 1918-02-27
Abstract: 126,093. Herriot, W. S., (Deerr, N.). Feb. 27, 1918. Extracting s u g a r . - Water or sugar-cane juice for macerating bagasse in sugar-cane mills is supplied by means of a device consisting of two coaxial rollers, one perforated and rotating, the other stationary with a longitudinal slot on the side directed towards the bagasse. Two such sets of rollers may be used, one above the blanket of bagasse and one below. In the arrangement shown in Fig. 5, the rotating roller 8 of the upper pair surrounds the stationary roller 9. To provide a tight joint between the two, pawl-shaped members 10, Fig. 1, are hinged to the roller 9 and press against the inner face of the roller 8, but can lift to allow of the passage of any pieces of solid matter that get between the two rollers. The surface of the roller 8 is formed with circumferential and longitudinal grooves, thus giving a surface covered with projections except at the ends, where smooth bearing surfaces are left, which run on rollers 11 carried by a spring frame 12, and on other rollers 25. Scrapers 63 keep the surface of the cylinder 8 clear. The rotating roller 7 of the lower pair is arranged inside the stationary roller 5 which carries adjustable and renewable plates 6 acting as scrapers to keep the surface of the roller 7 clear, and a scraper 3 acting on the surface of the crushing roll 2. To permit of the adjustment of the scraper 3, the roller 5 can be turned slightly about its axis. Liquid is supplied to the interior of the rollers 7, 9 by appropriate flexible connexions. Various arrangements of the rollers with relation to the other elements of the mill are described.
Patent GB-553820-A (GB)
Title: Improvements in ships for use in naval warfare
IPC: B63G1/00
Filed: 1942-03-17
Abstract: 553,820. Ships with twin hulls. LAW, E. A. March 17, 1942, No. 3485. [Class 113 (ii)] A ship comprises two similar hulls a, b rigidly joined together by girders c which span the intervening space d. The latter accommodates a paddle wheel k or other supplementary propelling means, and is surmounted by a rectangular chamber e accessible from both the hulls. The chamber e supports a turret f for two guns g, and there is a centrally disposed common smoke funnel h carrying an outlook chamber j and a mast i.
Patent GB-194504-A (GB)
Title: Improvements in invalid bed tables and the like
IPC: A47B23/00
Filed: 1922-02-07
Abstract: 194,504. O'Rourke, J. Feb. 7,1922. Invalids', bed, &c. tables; book &c. rests. - An angularly-adjustable bed-table is pivoted to a shelf overhanging a clamp for attachment to a chair or other portable article of furniture. The shelf 7 has on its lower side a clamp comprising two pairs of rods 4, 5 spaced to form jaws and an adjusting screw 9 carrying a pressure block 12 adapted to bear against the chair rail. The table 11 is supported at one end on a pin 13 in a cross-bar 14 at one end of the shelf 7. A lug 15 at the other end of the table has a pin 16 carried in a block 17 on the end of a fixed rod 18 extending beneath the table from the bar 14. The table is angularlyadjustable about its pivots 13, 16, and may be held horizontal by a pair of catches 19 on the bar 14.
Patent GB-1497809-A (GB)
Title: Angular positional sensing devices
IPC: E21B7/04
Filed: 1975-01-27
Abstract: 1497809 Clinometers BP TRADING Ltd 23 Dec 1975 [27 Jan 1975 9 April 1975] 3494/75 and 14513/75 Headings G1F and G1N An angular-position sensor comprises a housing 10 in which is mounted a rotation-sensing device 11 having a freely rotatable shaft 14 carrying a pendulum 17, such that angular movement of the housing about the shaft axis causes rotation of the device relative to the shaft, which is retained stationary by the pendulum, to produce a signal. The device 11 is screwed 12 to the housing with its sensing shaft 14 rigidly secured to and coaxial with a cylindrical pendulum 17 having a weight 18. The pendulum is light both in mass and inertia compared with a balanced wheel 24 rotatably mounted on the housing and circumferentially surrounding the pendulum; the housing including the space between the pendulum and wheel is filled with a damping fluid, a cellular member 29 accommodating any expansion of the fluid. To increase damping between the wheel and pendulum these may have interfitting cylindrical portions (17a, 24a), Fig. 1B (not shown). Two such sensors are shown installed at right angles to each other on the outside of a riser pipe, and their output signals are displayed on a CRT and also to an alarm system which operates progressively as predetermined angles of deviation from the vertical or other chosen reference are exceeded.
Patent GB-1060216-A (GB)
Title: A fulcrum bracket
Inventor: PARKER CLIVE FORDHAM
IPC: E03D1/012
Filed: 1965-01-27
Abstract: 1,060,216. Pivot mountings. FORDHAM PRESSINGS Ltd. Jan. 12, 1966 ,[Jan. 27, 1965], No. 3495/65. Heading E2F. A fulcrum bracket for a cistern comprises a base 10 and two side walls 11 each of the latter being formed with aligned openings 28 for a fulcrum pin, the base being of triangular shape and formed with a screw threaded hole 14 near to its apex. The bracket is positioned on a cistern wall with the wall lying between the base 10 and the undersides 19 of the sides 11, a face 24, of a reinforcing web 23 extending across the bracket between the side walls forming an abutment for the edge of the cistern wall. Tightening of the screw 15 in the hole 14 secures the bracket in position.
Patent GB-501787-A (GB)
Title: Vulcanisation of rubber
IPC: C08K5/00
Filed: 1938-02-04
Abstract: 501,787. Vulcanization accelerators. WINGFOOT CORPORATION. Feb. 4, 1938, No. 3528. Convention date, May 15, 1937. [Class 70] [Also in Group IV] Rubber is vulcanized in the presence of a compound having the formula in which R is an aliphatic or aromatic radicle, and R<1> and R<11> are aromatic radicles. The compounds are addition products of guanidines and phenyl isothiocyanate. Data are given of results obtained employing as activator the addition product from (1) sym. diphenylguanidine and phenyl mustard oil, (2) di-otolylguanidine and phenyl mustard oil, (3) sym. diphenylguanidine and o-tolyl mustard oil, (4) di-p-tolylguanidine and phenyl mustard oil, (5) sym. diphenylguanidine and allyl mustard oil. These compounds were added to a rubber composition consisting of smoked sheet 100 parts by weight, zinc oxide 5 parts, sulphur '3 parts and 2-mercaptobenzthiazole À3 parts. The compounds may be employed with other accelerators as activators or by themselves as primary accelerators. A list of isothiocyanates which may be employed according to the invention is given.
Patent GB-1153364-A (GB)
Title: Process for the Production of Epsilon-Caprolactone.
IPC: C07D313/04
Filed: 1967-01-24
Abstract: 1,153,364. Epsilon-caprolactone. UGINE KUHLMANN. 24 Jan., 1967 [12 Feb., 1966], No. 3612/67. Heading C2C. Epsilon-caprolactone is prepared by heating esters or self-polyesters of epsilon-hydroxycaproic acid between approximately 150‹ and 350‹ C. in the presence of a basic compound as catalyst. Reduced pressure is preferred and the reaction products may be distilled as they are formed, or the alkanol first in the case of an alkyl ester. The basic compound may be a hydroxide, oxide, carbonate, cyanide, alcoholate, acetate or propionate of an alkali or alkaline earth metal, Mg, Zn, Cd, Al, Ti, Pb, Sn, or Sb, or a basic salt such as a Cu or Ag basic carbonate or acetate.