baber/WOPTO huggingface dataset:
Patent GB-450025-A (GB)
Title: Improvements relating to centralized lubrication systems
IPC: F16N13/08
Filed: 1936-01-08
Abstract: 450,025. Lubricating-pumps. TECALEMIT, Ltd., and CHALMERS, R. A., Great West Road, Brentford, Middlesex. Jan. 8, 1936, No. 2363/35. [Class 102 (i)] In a lubricating-pump a number of discharge pipes 5, leading to different points to be lubricated, communicate with discharge ports 4 in the pump barrel 1. The ports 4 are arranged on a helical line about the barrel and preferably at equal axial distances apart. The plunger is formed with an axial bore 13, transverse bores 15 and a groove 14, which, during the discharge stroke, registers in succession with the ports 4. The suction valve casing 10 screws into the end of the cylinder. The pump is operated by manual pressure on a knob 25 screwed into a sleeve 20, which slides in a guide 31 secured to the pump body. The suction stroke is effected by a spring 24 and is limited by the engagement of flanges on the sleeve 20 and guide 31. The position of the plunger at the end of suction stroke can be adjusted by means of a stud 27 in the knob 25, the adjustment being correct when the groove 14 is visible through an inspection hole 29. The pump can be clamped to a support by a nut 32.
Patent GB-214012-A (GB)
Title: Improvements in or relating to dredgers, drags, levelling, and like apparatus
IPC: E02F3/60
Filed: 1923-01-26
Abstract: 214,012. Grundy, J. P. Jan. 26, 1923. Scraping-apparatus; drags.-A dredger, drag, leveller, &c. for cleaning ponds, rivers &c., and adapted to be hauled to-and-fro by winding gear on opposite sides of the part to be cleaned, comprises a carriage of sledge-runner type supporting a pivoted bucket or scoop. The carriage comprises upper and lower struts 1 with their ends curved, the lower struts being preferably reinforced by plates 2; plates 5, 6, braces 8, stays 7, and transverse plates 3, 4 connect and strengthen the structure. A bucket 9, preferably with perforated' sides, is pivoted to the carriage at 10, its downward movement being limited by a transverse bar or stops 21. Rear haulage cables &c. 19 are connected to the frame at 20 and through a cable 17 to a roller 12; an auxiliary cable &c. 14 is connected at each end to the roller and passes through a member 15 on the bucket, whereby a pull on the cables 19 first tilts and empties the bucket and then moves the carriage. The bucket may be returned by gravity or may be connected by a chain &c. 25 to the forward haulage cable 23 for positive return. Pivoted sprags 27 may be provided to prevent rearward movement of the carriage before or when the bucket is tipped: the rear cables 19 are then connected to arms 29 to move the sprags to inoperative position during rearward movement. In a modification, the cable 17 passes over pulleys and is directly connected to the bucket to tilt the latter. In a further form the cables tilt the bucket by means of levers.
Patent GB-1455383-A (GB)
Title: Photosensitive material for electrostatic photography
IPC: G03G5/14
Filed: 1974-01-18
Abstract: 1455383 Electro-photographic materials containing memory erasers MITA INDUSTRIAL CO Ltd 18 Jan 1974 [22 Jan 1973(2)] 02456/74 Heading G2C A process of preparing an electro-photographic material which comprises on a conductive support, a layer of (a) an inorganic photo-conductor dispersed in (b) an electrically insulating binder and (c) a compound which erases the memory effect, the compound being an alkali metal dichromate or permanganate, the process comprising applying the three components, an aromatic solvent in which the binder is dissolved or dispersed and a poler solvent for the third component (c) which solvent is soluble in the aromatic solvent, at a coating weight of 5 to 50 g per square meter to the support, component (2) having a specific resistance of at least 10<SP>14</SP> ohm cm and 5 to 50 parts of the binder and 0.001 to 1 part of component (c) per 100 parts by weight of the photo-conductor being used. Specified photo-conductors are Se, oxides of Zn and Ti, selenides of Cd and Pb and sulphides of Cd, Se, and Pb and specified binders are polyesters, acrylic resins, vinyl polymers, alkyl, melamine and epoxy resins. A layer of ethyl cellulose may be coated over the photo-conductive layer. The material may be used for positive or negative charging.
Patent GB-469123-A (GB)
Title: Improvements in or relating to movable figures for advertising, display or other purposes
IPC: G09F19/08
Filed: 1936-01-27
Abstract: 469,123. Moving signs. EBURNE, B. Jan. 27, 1936, No. 2548. [Class 3 (i)] A moving figure for advertising, display or other purposes comprises front and rear fixed panels 4, 1, one of the oscillating parts 9 of the figure being carried by the rear panel 1 and operated by a motor 21 through crankdisc 21a and connecting-rod 20. Another part 11 of the figure is oscillatably mounted on the front panel 4, and is connected to the part 9 by a link or links 8, 10, 12 also forming parts of the figure. Two figures shown comprise respectively a man rowing a boat, and a man pushing a lawn-mower, the mower having rollers or wheels so as to reciprocate between the panels 1 and 4.
Patent GB-347229-A (GB)
IPC: A61G15/02
Filed: 1930-01-24
Abstract: 347,229. Seats. PIEPER, O. H., 43, Appleton Street, and PIEPER, A. F., 49, Hancock Street, both in Rochester, New York, U.S.A.-(Assignees of Meitzler, C. R. ; 161, Thurston Road, Rochester, New York, U.S.A.) Jan. 24, 1930, No. 2586. Convention date, Sept. 16, 1929. [Class 52 (ii).] A motor operating a vertically-adjustable chair is controlled by a pedal-operated reversing switch, and a limit switch, a mercury or like tube switch being employed with either or both of the control switches to prevent arcing. The reversing switch arm 46, Fig. 12, carries contacts 45 over contacts 35 .. 41, Fig. 5, and a roller 55 along a slot 56 in a lever 57 to rock the lever 57 about its pivot 58, the rocking movement being limited by a slot 60, and a pin 61. A mercury tube switch 65 is adjustably carried on a pivoted plate 64 which is tilted by means of a pin 81 when the reversing switch arm 46 rocks the lever 57. The slot 56 is so shaped that the contacts on the arm 46 engage the corresponding fixed contacts before the mercury switch closes the circuit and disengages them after the mercury switch breaks the circuit, so that arcing is prevented. A spring 63 tends to maintain the lever 57 in a neutral position corresponding to the central position of the arm 46, and the open position of the mercury switch. The pedal mechanism is such that the reversing switch can be operated in either direction from either side of the chair. A spring 91, Fig. 12, acting with stops 95 on members 92 causes the reversing switch arm to return to its " off " position immediately the pressure on a pedal is released, the movement being regulated by a dashpot 96 to prevent violent agitation of the mercury in the tube 65. A mercury tube limit switch 102, Fig. 14, adjustably mounted on an actuator 109 pivotally carried at 112, upon a baseplate 100 is actuated by rollers 132, 133, Fig. 1, on a moving column of the chair at the upper and lower limits of travel. The rollers 132, 133 engage cam-like projections 128, 129 Fig. 14, on the actuator 109 to give the mercury tube a slight jolt in one direction before a definite tilt in the opposite direction to ensure a definite separation of the mercury. A spring 122 attached to the limit switch returns the actuator to its normal position when the rollers move away from the cams, the speed of return being regulated by the specially-shaped projection 130, 131 on the cams 128, 129. The driving motor may be of A.C. or D.C. type, a condenser being fitted in the latter case to prevent arcing in the mercury tubes. Specification 271,054, [Class 52 (ii), Furniture for sitting &c. upon], is referred to.
Patent GB-1241176-A (GB)
Title: Improvements in or relating to hinged connections between two members
Inventor: OPHER THOMAS WILLIAM
IPC: E05D1/00
Filed: 1968-01-17
Abstract: 1,241,176. Tongue and slot hinges. T. W. OPHER & SON Ltd., T. W. OPHER and W. C. ROGERS. 12 Nov., 1968 [17 Jan., 1968], No. 2586/68. Heading E2F. Two members such as plates are connected together by a hinge comprising on one member 10 a projecting tongue 12 and on the other member 11 a slot 13 through which the tongue 12 extends, a part 14 of the tongue 12 on the side of the slot 13 remote from the member 10 being folded back on itself to overlie the material of the other member 11 at one end of the slot 13 whereby withdrawal of the tongue 12 from the slot 13 is prevented. The tongue 12 is a loose fit in the slot 13 to permit pivotal movement between the members about an axis parallel to the slot 13. Preferably one or more tongues project obliquely from the edge of the plate 10 and the end part 14 is folded back to lie at an angle to the rest of the tongue 12. The tongues may be joggled out of the plane of the plate 10 (see 12a in Fig. 2).
Patent GB-182835-A (GB)
Title: Improvements in or connected with rotary cutting and levelling knives
IPC: C13B5/02
Filed: 1921-01-19
Abstract: 182,835. Withers, J. S., (Penning, C. J. H.). Jan. 19, 1921. Securing blade knives on shafts.- To secure blade knives b to a rotary shaft e so that they may readily be detached or adjusted each doubleended blade knife b is formed with a slot d extending from the side to a central hole c adapted to engage the shaft e. Part of the shaft is of square hexagonal, octagonal, or other shape, the holes in the blades corresponding thereto. A saddle piece y fits over the slotted side of each knife and engages the flats on the shaft, being clamped thereagainst by bolts k having hooked ends n which engage the far side of the knife. A distance piece p may be fitted in the slot of each knife. In a modification, U- shaped bolts passing over one edge of the knife on each side of the shaft pass through bars extending across the side of the shaft remote from the knife-edge engaged by the bolts. These U-shaped bolts may be replaced by straight bolts passing through bridge-pieces extending over the edge of the knife.
Patent GB-555735-A (GB)
Title: Improvements in or relating to signal collecting systems for radio receivers
IPC: H01F21/06
Filed: 1942-03-02
Abstract: 555,735. Inductances. JOHNSON LABORATORIES, Inc. March 2, 1942, No. 2723. Convention date, March 8, 1941. [Class 38 (ii)] [Also in Group XL] A signal collecting system comprises a loop antenna 1 which with a variable inductance 2 and capacity 5 forms a resonant circuit which feeds directly to the grid 6 of the first valve 7. Inductance 2 comprises a winding 3 and a core which comprises a conducting non-magnetic part 4b and a non-conducting magnetic part 4a. This greatly extends the range of inductance variation and simultaneously varies the resistance of the winding so that the Q of the system varies inversely as the frequency. The core portion 4a is the usual communicated iron or iron alloy in an insulating binder. Part 4b may be formed of a non-magnetic metal tube or may be of uninsulated metal dust. To obtain a desired characteristic the core 4b may include a blend of metallic powders of different conducting which varies lengthwise of the core, and may include in parts, a blend of magnetic powders. Also the shape or wall thickness of the core 4b, and the amount of overlap at the junction of the cases may be varied. Specification 410,217, [Group XXXVI], is referred to.
Patent GB-1234844-A (GB)
Title: Reinforced microporous laminates
IPC: B29C70/14
Filed: 1969-01-17
Abstract: 1,234,844. Foam laminates. PHILLIPS PETROLEUM CO. 17 Jan., 1969 [18 Jan., 1968], No. 2784/69. Heading B5N. [Also in Division C3] A microporous laminate comprises at least two foamed thermoplastic or elastomeric layers each containing unidirectionally oriented fibres, the fibres of adjacent layers being disposed at an angle; it is made by incorporating fibres and blowing agent into a softened material, forming into a sheet, orienting the fibres and laminating the sheets, foaming being carried out, during, before or subsequent to sheet formation, by heating. The fibres may be oriented and the sheet formed by calendering at 100-400‹ F. Specified layer materials are natural rubber, ethylene-propylene and ethylene-propylene-diene rubber, polyisobutylene, polybutadiene, polyisoprene, polymethylisoprene, polymethylpentadiene, polychloroprene, polyvinyl ethers, polyacrylates; copolymers of butadiene with styrene or acrylonitrile; butyl rubber; polymers and copolymers of olefins (e.g. polypropylene) acetals, acrylics, halogenated olefins, styrene and vinyl compounds; polycarbonates, polyvinylidene fluoride, and urethane elastomers. Specified fibres, which may be incorporated in amount 10-150 parts per 100 parts layer material, are asbestos, metal, cotton, hair, glass, nylon, polyester, rayon and cellulosic. Various known blowing agents are specified. Other materials which may be included are pigments, reinforcing agents, extenders, antioxidants, antiozonates, curing agents and fibre adhesion promoters. Lamination may be by adhesive or by thermal welding between rollers; in an example using butadiene-styrene copolymer as the layer material, sheets are (a) joined, cured and blown at 300‹ F.; (b) joined at 200‹ F., blown at 250‹ F. and cured at 300‹ F.; (c) blown at 250‹ F., joined, and then cured at 300‹ F.; (d) blown at 250‹ F., cured at 300‹ F. and adhesively joined; (e) blown and cured at 300‹ F. and adhesively joined. Preferably the blown material is open-celled. The angle between the fibre directions of adjacent sheets may be 10-90 degrees, e.g. 60 degrees, 90 degrees.
Patent GB-657026-A (GB)
Title: Improvements relating to multi-stage thermionic valve amplifiers
Inventor: JAMES IVANHOE JOHN PENFOUND
IPC: H03F1/50
Filed: 1948-01-30
Abstract: 657,026. Valve saw-tooth amplifying circuits. ELECTRIC & MUSICAL INDUSTRIES, Ltd. Jan. 30, 1948, No. 2792. [Class 40 (vi)] In a wide band thermionic amplifier having a forward path and a negative feed-back path which forms a loop therewith, and having a number of stages in the loop with cut-off frequencies, the frequency dependent element in one of the stages in the forward path imparts a phase shift to a signal component of a chosen frequency which is of the same sign and order of magnitude as the sum of the phase shifts imparted to the signal by the other stages multiplied by the magnitude of the pure negative feed-back loop gain of the amplifier. The object of this arrangement is to produce a flat amplitude frequency characteristic of the amplifier. A "Head" amplifier for television transmission using these principles is shown in Fig. 4. The valves are provided with D.C. couplings as described in Specification 456,450. The primary time constant of this circuit is taken as that of the load circuit of valve 52 and it may be necessary to connect the anode of this valve to earth through a condenser 69 if the stray capacity of the valve does not result in a sufficient value of the time constant. An adjustable inductance 70 is provided, as the apparatus as first designed may not be able to conform precisely with the conditions for the flattest characteristic. The feed-back is taken from across a resistance 60 in the cathode connection of the last valve 53. In the amplifier described the feed-back ratio is independent of frequency and also only high frequency cutoffs are concerned and the product of the sum of the time constants and feed-back gain is multiplied by two in order that it may be equated with the primary time constant. If low frequency cut-offs are concerned the reciprocals of the time constants replace the constants themselves in the above relations. The amplifier shown in Fig. 4 feeds television signals into six parallel lines 76. The input valves 77 and 78 are strictly in parallel and D.C. couplings are used. The time constant chosen as primary is that of the anode load circuit of valve 81 and inductance 87 is chosen to provide the variable compensation. An A.C. coupled amplifier for a frame scanning circuit for television is shown in Fig. 5 and comprises a generator of saw-tooth wave form consisting of a source of pulses 110, a diode 109, condenser 111, and resistance 112. The feed-back resistance 127 is placed in the secondary circuit of an output transformer 124. A mathematical discussion is given to show that the time constant liable to cause low frequency as well as high frequency cut-off may be adjusted according to the conditions of the invention to produce the desired flat characteristic. Specification 630,132 is referred to.
Patent GB-620902-A (GB)
Title: Improvements in devices for use in cutting glass
IPC: C03B33/12
Filed: 1947-01-30
Abstract: 620,902. Adjustable rules for glass cutting. CARTER, B. Jan. 30, 1947, No. 2908. [Class 56] [Also in Group XX] A device for use in cutting sheets 21 of glass, etc., has a guide member 1 to be placed against the short edge, a rule member 2 for guiding the cutting tool, a pair of arms 3, 4 adjustably connecting the members, and means 12 for clamping the members in position, (each arm being connected to one of the members at a point fixed along the length thereof and connected to the other member by a pivoted connection which is slidable longitudinally along the arm so that the angle and distance between the members can be adjusted). The bars 3 and 4 are connected to the member 2 by screwed studs 8 and nuts 10 so that the bottom surfaces of the three parts be in the same plane, and pass through slots in the screwed studs 11 which are rotatable in the guide member 1, and clamped in position by nuts 12. The distance between the studs 8 is equal to that between the studs 11. The bars 3 and 4 may also act as guides for the cutter and are preferably graduated to indicate the distance between the members 1 and 2, and by arranging a protractor, e.g. about a pivot 11, the angles between the parts may be adjusted. The members may be of metal, plastic, etc., and the pivots may be reversed i.e. parts 8 and 10 on the guide 1, and parts 11 and 12 on the rule 2.
Patent GB-639811-A (GB)
Title: Improvements in and relating to aircraft undercarriages
Inventor: NEALE ROBERT LINDSAY
IPC: B64C25/00
Filed: 1948-01-31
Abstract: 639,811. Aircraft undercarriages. BOULTON PAUL AIRCRAFT, Ltd. Jan. 31, 1948, No. 2935. [Class 4] A normally fixed or non-retractable aircraft undercarriage is held in its extended position by locking means which are releasable in an emergency to allow the undercarriage to collapse. In the embodiment illustrated, the undercarriage (shown in the normal and collapsed positions by full and broken lines respectively) comprises an oleo-leg 2, a landing- wheel 1 and a breakable strut 4. A cable 8 is connected to a spring-loaded retractable locking bolt, Fig. 2 (not shown), which is normally located in corresponding holes in the two halves of the breakable link 4 and which may be retracted by the cable 8 to allow collapsing of the undercarriage during a crash landing.
Patent GB-596427-A (GB)
Title: Improvements in or relating to apparatus for decorating dinner ware and the like
IPC: B44D3/22
Filed: 1944-02-18
Abstract: <PICT:0596427/III/1> <PICT:0596427/III/2> <PICT:0596427/III/3> Decorative circumferential lines are applied simultaneously to a number of dinner plates &c. in a machine comprising a rotating table 15 driven continuously by an electric motor 13, belts 11, worm 6 and worm wheel 5 and provided with a number of plate holders 18 arranged around its circumference and rotated continuously on their axes by means of pulleys 21 and a belt 22 passing around all the pulleys and having a radial loop passing around a stationary central sheave 23, each plate holder having mounted adjacent thereto on the rotary table a pivoted colour applicator 41 supplied with colour by its own bottle 57, cam and lever operated pump 53 and pipe 54, Fig. 3, which applicator is lifted for part of the rotation of the table by means of a projecting arm 45 engaging a cam 47 to enable a lined plate to be removed and a new one placed in the holder and for the other part of the rotation of the table is allowed to contact the plate to apply a coloured line around its edge as shown in Fig. 3 or inside the plate as shown in Fig. 10, where the applicator has an end tip 97 of absorbent material.  The applicator shown in Fig 3 comprises three rollers, the lower one of which is of metal gauze 73 through which the colour fed by the pump 53 and tube 54 percolates on to a band of absorbent material 72 disposed around the rollers and rotated from time to time by a head 71 to distrimute the colour.  In a modification the rollers are rotated automatically by a ratchet.
Patent GB-1468149-A (GB)
Title: Tooth remineralising composition
IPC: A61Q11/00
Filed: 1974-02-26
Abstract: 1468149 Dentifrices NATIONAL RESEARCH DEVELOPMENT CORP 26 Feb 1974 [22 Jan 1973] 3143/73 Heading A5B Dentifrice compositions comprise a source of calcium and phosphate ions and an inorganic fluoride salt in amounts such that, in use, there is formed in the mouth a solution which is saturated with respect to calcium and phosphate ions containing between 0.5 ppm and 100 ppm fluoride ions by weight. Other conventional ingredients may be present, e.g. for toothpastes, other abrasives such as CaCO3, silica, calcium pyrophosphate and sodium metaphosphate. A buffer in the range pH 5.8 to 7.5 is preferably also present.
Patent GB-1402302-A (GB)
Title: Spectrometry
IPC: G01N21/33
Filed: 1972-07-03
Abstract: 1402302 Photo-electric gas analysis ENVIRONMENTAL DATA CORP 3 July 1972 [1 July 1971] 3229/75 Heading G1A The description is similar to that of Specification 1402301, but the claims relate to the method of analysis of nitric oxide in the presence of sulphur dioxide at an absorption frequency characteristic of nitric oxide and at two other non-absorption frequencies on respective sides of the absorption measurement.
Patent GB-1451878-A (GB)
Title: Lung ventilator
IPC: A61B5/087
Filed: 1974-01-23
Abstract: 1451878 Detecting gas leakage JUNGNER INSTRUMENT AB 23 Jan 1974 [29 Jan 1973] 03231/74 Heading A5T A lung ventilator arranged so that leakages may be detected, comprises an expiration tube 5 for connection to a breathing mask (not shown) via a tube 3, a first valve 6 operative to be open during expiration and closed during inspiration, gas volume measuring means 7 downstream of valve 6, and a second valve 8 connected between first valve 6 and the volume measuring means 7 which is controlled to open to the atmosphere during inspiration and to close during expiration. A third valve 9 which may be a check valve may be provided between the volume measuring means 7 and the second valve 8 for preventing gas flow from the measuring means 7 to the atmosphere through the second valve 8. A gas dosing unit 1 may be connected to an inspiration tube 2 via a non- return valve 4. Valves 6, 8 and 9 may be controlled in synchronism with gas dosing unit 1. In use, the volume of exhaled air registered by the volume measuring means 7 is compared with the volume supplied by the unit 1. Any air from unit 1 which leaks through the first valve 6 escapes through the second valve 8, and consequently is not registered by the volume measuring means 7.