baber/WOPTO huggingface dataset:
Patent GB-301679-A (GB)
Title: Improvements in and relating to band saws
IPC: B23D55/10
Filed: 1928-02-28
Abstract: 301,679. Kann, W., (trading as Eisen-& Stahlindustrie Essen Inhaber W. Kann). Feb. 28, 1928. Band-saw machines. - The upper pulley is carried by a right-angled lever C enclosed in the framing and adjusted by means of a hand wheel F and spring G. A small lateral adjustment of the pulley is provided by a screw M engaging a depending lug N which carries the pulley and is mounted on the angled lever C by means of an eccentric knob O. A countenveighted guard P covers the cutting run of the saw, and a vessel S for catching waste is provided below the bottom pulley.
Patent GB-778798-A (GB)
Title: Improvements in pressure-sensitive adhesive sheeting
IPC: C09J7/02
Filed: 1956-02-29
Abstract: 778,798. Pressure sensitive adhesive tapes; flexible laminates. UNITED STATES RUBBER CO. Feb. 29, 1956 [June 6, 1955], No. 6289/56. Class 140. A pressure sensitive adhesive sheet comprises a backing laminate composed of a film of polyethylene 1 reinforced with a plurality, e.g. 10 to 70 yarns per inch width of tape, of spaced parallel glass fibre yarns 2 which may extend longitudinally parallel to the edges of the tape, each of said yarns being completely surrounded by and in direct and intimate contact with the polyethylene of said film and may be disposed more closely to one face than to the other of said film of polyethylene, said first named face having longitudinally extending protuberances formed by the yarns and polyethylene above said yarns, and valleys formed between said protuberances the lowermost points of the valleys being substantially below the uppermost points of the yarns, and having on one face of the laminate a water. insoluble normally tacky and pressure sensitive adhesive of the rubber resin type 3. With reference to Figs. 2 and 3, glass fibre yarns 2, spaced by comb 17, are continuously fed into the nip formed by polyethylene films 12 and 14, extruded at an elevated temperature from extruders 11 and 13, at roll 16 and resiliently surfaced roll 15, cooled and coated by the action of doctor knife 19 behind which bank 18 of adhesive is maintained, prior to drying in zone 20 and winding on roll 21. Suitable adhesives are vinyl alkyl ether polymers or copolymers of two or more monomeric alkyl acrylates or a mixture of a natural or synthetic rubber or a rubbery material, e.g. GR-S, polyisobutylene, reclaimed natural or synthetic rubber, and a natural or synthetic tackifying resin, e.g. ethylene glycol ester of hydrogenated rosin, factice (vulcanized vegetable oil).
Patent GB-1466040-A (GB)
Title: Apparatus and method for determining antigens or antibodies by immunoelectrophoresis
IPC: G01N27/447
Filed: 1975-02-14
Abstract: 1466040 Immuno-electrophoresis BEHRINGWERKE AG 14 Feb 1975 [14 Feb 1974] 6297/75 Heading C7B One or more immunologically active substances, antigens or antibodies in an antiserum, are qualitatively and/or quantitatively determined by applying one or more antigens to the first of a plurality of matrix strips arranged in strips, each strip containing a specific antiserum or at least one of the strips containing the antiserum to be determined, the others each containing a specific antiserum, respectively, and passing an electric current across the strips. Preferably the first (end) matrix strip, attached to a cathode, is antiserum-free and provided with holes into each of which an antigen sample is placed; an anode is attached to the other end strip. The matrix may be a gel of agar, agarose, starch, gelatine or acrylamide. The antigen and corresponding antibody react to form an antigen/  antibody complex precipitate which may be analyzed quantitatively.
Patent GB-1292733-A (GB)
Title: Machine for digging soil
IPC: E02F5/08
Filed: 1970-02-10
Abstract: 1292733 Machine for digging soil LANDBOUWWERKTUIGEN-EN MACHINEFABRIEK H VISSERS NV 10 Feb 1970 [13 Feb 1969] 6311/70 Heading A1B A driven rotor 5 is mounted in a mobile frame 1 for rotation about the digging axis 4, and bears at least one circular set 7 of spades 6 which are each mounted on the rotor to tilt about an axis 11 transverse to the digging axis and are each coupled to a guide member 14 running in a cam member 9 so shaped that each spade tilts as it rises and is then returned to its original position. The cam profile 16 is such that the acceleration period of the tilting of the spades takes place as the rotor is displaced through an angle greater than fortyfive. degrees. The movement, parallel to the axis of the stationary camshaft 8, of the guide member 14 is transmitted to tilt the spade by means of rack 13 and pinion 12, whose axis of rotatiom is the tilting axis 11. The camshaft 8 is co-axial with and is located, inside the hollow rotor 5. The cam profile 16 may be such that the tilting angle of the spade is about ninty degrees, and also such that the period of deceleration of the spade tilting takes place during a much smaller angular displacement of the rotor than that corresponding to the acceleration period. There may be a period of constant tilting speed between the acceleration and deceleration periods. Guide and deflection members 27, 33, are provided for the soil clods thrown by the spades. (For Figures see next page)
Patent GB-741741-A (GB)
Title: Improvements in liquids for use in aircraft hydraulic systems and in liquid spring type shock absorbers
Filed: 1953-03-06
Abstract: A lubricant consists of a mixture of 100 parts of silicone liquid of 10-200 cs. viscosity at 25 DEG C and 15 parts of a light mineral oil having a specific gravity of 0.909, a viscosity at 70 DEG F of 50 cs., at 140 DEG F of 13cs. and at 200 DEG F of 9 cs., a pour point of -50 DEG F, an aromatic content by Waterman analysis of 13 per cent and an aniline point of 73.4 DEG C.
Patent GB-171067-A (GB)
Title: Improvements in hooks and eyes
IPC: A44B13/00
Filed: 1921-02-25
Abstract: 171,067. Fenton, W. H., and Bevan, F. H. Feb. 25, 1921. Hooks and eyes.-Relates to hooks of the kind in which the bill is substantially in the same plane with the attachment eyes of the hook, and consists in making the bill in the form of an elongated loop or ellipse with a blunt end whereby it engages the eye with a snap action. As shown in Fig. 1, the wire of the hook crosses over itself at the root d of the ball c. As shown in Figs. 2 and 3, the eye e is more sharply tapered than usual and its end is slightly bent up.
Patent GB-250727-A (GB)
Title: Improved means for casting concrete culverts in situ
IPC: E04G15/06
Filed: 1925-03-09
Abstract: 250,727. Nose, T. March 9, 1925. Moulding conduits in situ. - Culverts are moulded in situ by the use of a flexible core comprising an outer elastic portion 2 smaller in diameter than the bore to be formed, and a separate flexible inextensible portion 4, 5 slightly larger in diameter when inflated than the outer portion; after casting the inner portion is deflated and the outer portion contracts from the concrete and is easily withdrawn. The outer portion may be of rubber and the inner portion of rubberized canvas, leather, or the like, and strips of bamboo or the like may be placed between the outer and inner layers of the inner member when the culvert is straight. The core may be supported between crossed wires 8 which form the reinforcement for the culvert or between adjustable clamping members 12 in frames 7, 9, Fig. 5, which are removed as the casting proceeds.
Patent GB-1235356-A (GB)
Title: Clamping device
Inventor: PRATT JOHN WILLIAM
IPC: G09F7/18
Filed: 1968-02-09
Abstract: 1,235,356. Band clamps. J. W. PRATT. 4 Feb., 1969 [9 Feb., 1968], No. 6455/68. Heading E2B. [Also in Division A4] A clamping device comprises a band 2 and a connector 1 to receive its ends, at least one of the ends being retained by an element 3 which has an associated releasable ratchet mechanism, wherein the or each retaining element 3 is turnably received in an aperture 4 in the connector and is formed around its periphery with ratchet teeth 6 for engagement with complementary teeth 7 on the part of the connector defining the aperture, the teeth being arranged to permit turning of the element 3 in one direction only and being disengageable when required. As shown, the ends of the band 2 are received in a slot 5 in a pair of elements 3. Teeth at the ends of each element 3 co-operate with teeth 7 defining part of each aperture 4 whereby rotation of one or both elements in one direction is effective to tighten the band around a support 8. They may be released by driving one of the elements out of the connector. The device may be used to fix a road sign to a post.
Patent GB-585819-A (GB)
Title: Improvements in or relating to range finders
IPC: G01C3/16
Filed: 1944-04-06
Abstract: 585,819. Range-finders. INTERNATIONAL POLAROID CORPORATION. April 6, 1944, No. 6515. Convention date, March 2, 1943. [Class 97 (i)] In a stereoscopic range-finder the image of a graticule formed by a collimating lens 24 positioned between the graticule and the eyes of the observer, is superimposed upon the field of view of the observer. Transparent mirrors 15, permitting the graticule image to be seen therethrough, are provided for reflecting the incident rays from other mirrors 12 which increase the effective interocular distance of the observer. The position of the graticule with respect to the focal plane of the lens being known, the apparent position of the graticule in the field of view is therefore known and hence the range of an object in the field of view, stereoscopically fusing with the graticule image, is also known. As shown, the mirrors 15 are at right angles to one another and the mirrors 12 are also at right angles, but these angles may be varied to provide different scales. In the form shown in Fig. 2, the graticule comprises simply a light source 22 preferably positioned within the focal plane of the lens 24. A plurality of ranges may be given by using the graticule shown in Fig. 3 which comprises a number of superimposed sheets each carrying a differently positioned mark A, B, C or D so that when the graticule is set up, each mark lies at a different distance from the focal plane of the lens; e.g. the mark A may lie in the focal plane and each successive mark predetermined distances within the focal plane so that if, for example, the focal length of the lens is 18" and the sheets are .0075" thick and the instrument has a base line of four feet, mark D appears to lie 600 yards and mark C 1200 yards from the instrument. The graticule may also be used with a range-finder not provided with means for increasing the interocular distance.
Patent GB-589017-A (GB)
Title: Improvements in change over switches for radio receiving and like apparatus
IPC: H01H19/58
Filed: 1945-03-15
Abstract: 589,017. Mechanical switches. BOOTH, E. R. March 15, 1945, No. 6549. [Class 38 (v)] In a change-over switch for radio apparatus, a pair of movable contact plates G, each bridging an arcuate contact A and a series of concentric contacts B, are carried by opposite arms of a spring blade F, which is carried by a spindle E rotatable in a screw-threaded mounting bush D. The ends of the blade F are located in slots K in insulating carrying-pads H for the contact plates G, so that the latter are self-aligning. A positioning ball M seated in a third arm of the blade F, registers with recesses or protuberances in a plate N. In Fig. 3 (not shown) two balls M are carried in a cruciform spring blade.
Patent GB-176389-A (GB)
Title: Improvements in and relating to fountain pens
IPC: B43K5/00
Filed: 1922-03-06
Abstract: 176,389. Salmon, J. March 5, 1921, [Convention date]. Reservoir pens.-A fountain pen is provided with a removable ink-reservoir consisting of a tube 1 having an interior thread at its open end to receive the end 5 of the nib-carrier 4, which has a larger thread 9 for attachment to the body 7 of the pen. Spare reservoirs are closed by screw-plugs.
Patent GB-1481839-A (GB)
Title: Dynamically tuned gyroscopes
IPC: G01C19/22
Filed: 1974-02-14
Abstract: 1481839 Vibration damping DEFENCE SECRETARY OF STATE FOR 11 Feb 1975 [14 Feb 1974] 6804/74 Heading F2S [Also in Division G1] A dynamically tuned gyroscope for an aircraft inertial guidance system comprises a drive shaft 14 connected to a gimbal 12 by a first torsion flexure 13, and a rotor 10 connected to the gimbal 12 by a second torsion flexure 11, the first and second torsion flexures 13, 11 being orthogonal, the effective torsional stiffness of the first flexure 13 being zero whilst that for the second flexure 11 equals 4w<SP>2</SP>r<SP>2</SP>m where w is the tuned rotational speed, m the component mass of the gimbal 12 on an axis through its centre of gravity and normal to its plane, and r is the distance of mass m from the centre of gravity of the gimbal. Mathematic argument given shows that such values for the effective torsional stiffnesses results in a system which is not sensitive to angular vibration at twice the rotational frequency. The torsional stiffness of the first flexure 13 may be made zero by over centre or toggle spring action, or by adding a magnetic or electrostatic system below the gimbal.
Patent GB-1090844-A (GB)
Title: Monoazo dyes, their production and use
Inventor: ALTERMATT RUDOLF
IPC: C08K5/00
Filed: 1965-02-17
Abstract: The invention comprises monoazo dyes of the general formula <FORM:1090844/C4-C5/1> wherein R1 is halogen, R2 is a cyano group, a carboxylic acid ester, amide or sulphonic acid amide group which may be substituted; R3 is an alkyl group which may be substituted; R4 and R5 are alkyl groups; R6 is hydrogen or an alkoxy group and Y is -CO-, -COO- or -SO2- group.  Preferably R1 is chlorine or bromine and the alkyl and alkoxy groups have 1 to 4 carbon atoms.  They are prepared by coupling the appropriate amine and coupling components.  The dyes may be used to dye, pad or print synthetic textile materials e.g. polyesters and polyamides in orange-red shades.
Patent GB-114514-A (GB)
Title: Apparatus for Lighting Coal Fires for Domestic Purposes with the use of Gas.
Inventor: ALLWRIGHT HERBERT
IPC: F24B15/00
Filed: 1917-05-14
Abstract: 114,514. Allwright, H., and Turner, A. May 14, 1917. Lighting fires. - Apparatus for lighting domestic fires by gas is formed in sections so as to be readily put together and taken to pieces, and adapted for use with grates of different sizes and width. It consists of a long tubular chamber a, Fig. 1, with a gas-inlet nozzle c at one end and a slot d or slots extending along one side, to which are fitted a number of nozzle pieces f, each provided with a loop g or its equivalent adapted to slide on the chamber a and be clamped in position thereon with the openings to the nozzles opposite the slot. Air-admission apertures may be provided. Washers k are placed between the loops for preventing escape of gas. The whole is mounted on a frame p adapted to hang from the bars of the grate.
Patent GB-1023231-A (GB)
Title: Improvements in and relating to gas detecting devices
Inventor: PALMER THOMAS HENRY
IPC: G01K1/14
Filed: 1961-02-24
Abstract: 1,023,231. Measuring gas concentration electrically. ENGLISH ELECTRIC CO. Ltd. Feb. 20, 1962 [Feb. 24, 1961], No. 6842/61. Heading G1N. The concentration of methane in a gas mixture is determined by measuring the rise in temperature of a platinum wire activated to cause combustion of the methane by catalytic action. As shown, the activated wire resistor 10 and a similar but unactivated resistor 11 are each housed in a porous tube 13 with sealed ends 14, also containing thermocouples 15, 16 respectively. The resistors 10, 11 are preheated by a battery 12. In the presence of methane, the temperature of resistor 10 rises above that of resistor 11, and an output voltage is obtained from the two thermocouples 15, 16 connected in series opposition, which is indicated on a meter 17 calibrated in percentage methane. Part of the thermocouple output is also fed to a transistor amplifier 20 containing a positive feedback loop to cause the collector current of output transistor 22 to rise rapidly when the methane concentration exceeds a level preset by slider 19 of potentiometer 18, lighting a lamp 21. A switch 37 enables the circuit through resistors 10, 11 to be checked, and a switch 38 enables the circuit of the alarm lamp 21 to be checked.
Patent GB-334871-A (GB)
Title: Improvements in the electrical separation of rubber from rubber latex
IPC: C08C1/14
Filed: 1929-03-04
Abstract: 334,871. Siemens & Halske Akt.- Ges. Jan. 17, 1929, [Convention date]. Addition to 307,747. Void [Published under Sect. 91 of the Acts]. Latex, coagulating.-The process for the electrophoretic deposition of rubber by alternating current according to the parent Specification is modified by the introduction of electrolytes into the latex itself or by saturating the porous moulds surrounding the electrolytes with electrolytes, instead of, or in addition to the introduction of electrolytes into the electrode spaces. The addition to the latex may be made when no porous bodies are employed. In an example, lead electrodes covered with plaster of Paris are saturated with a 20 per cent solution of calcium chloride and lightly rinsed in water before insertion into the latex. Using a voltage of 38 at 50 cycles and a current density of 0.0021 amps. per cq. cm., a total deposit of 2.15 gms. per watthour was obtained. Magnesium chloride, ammonium chloride, and acetic acid may be used as electrolytes.
Patent GB-1177922-A (GB)
Title: Gear Pumps and Motors
Inventor: JOYNER PHILIP GEORGE
IPC: F04C15/00
Filed: 1966-02-17
Abstract: 1,177,922. Rotary positive-displacement pumps and motors. DOWTY HYDRAULIC UNITS Ltd. May 9, 1967 [Feb.17, 1966], No.6993/66. Heading F1F. In a rotary positive-displacement hydraulic pump, or motor, of the externally-meshing gear-type, pressure-loaded bearing-bushes 20-- 23 for shafts 16--19 carrying a pair of gears 14, 15 are lubricated by small quantities of working fluid at low-pressure entering a groove 48 in each bush through a radial slot 46, or 47, in the face of the bush adjacent the respective gear and an annular groove 38, 39, 40 or 41 in the corresponding shaft, the slot aforesaid being located adjacent a low-pressure port for said fluid. The working fluid enters each of the slots 46, 47 whenever one of the gear-tooth spaces is in register therewith. To ensure proper lubrication, a groove 50 in each bush is connected to the associated groove 48 by a further groove 53 and to another groove 55 by a chamber 36, 37, 42 or 43 and a channel 54, the groove 55 being situated such that suction is effected therein by the gear-teeth on each gear that are disengaging the gear-tooth spaces on the other gear. Pressureloading is effected by chambers 34, 35 connected to the high-pressure side of the gears and sealed by rings 30, 31 located eccentrically by projections 28, 29 to distribute axial thrust in accordance with the hydraulic gradient across the gears. The bushes 20, 22 and 21, 23 may be rendered integral with each other; and each of the grooves 53 may be replaced by at least one helical groove. There may be more than two gears.
Patent GB-384503-A (GB)
Title: Improvements in fixing bricks or blocks
IPC: E04D13/14
Filed: 1932-03-09
Abstract: 384,503. Fixing bricks or blocks. LEWIS & SONS, Ltd., A. P. and LEWIS, B. B., Duke Street, Burton Latimer, near Kettering. March 9, 1932, No. 6995. [Class 87 (i).] In a brick or block of the kind comprising a concrete or the like base grooved or slotted to receive a wood plug, the sides of the groove or slot are formed with raised ridges B, the portions C of the sides between the ridges being substantially parallel to the general direction of the slot. The ridges on opposite sides of the groove may be staggered with respect to each other, and may be of unequal shape and, or spacing.
Patent GB-974717-A (GB)
Title: Derivatives of piperazine and homo-piperazine
IPC: C07D295/084
Filed: 1963-02-21
Abstract: The invention comprises compounds of the general formula <FORM:0974717/C1/1> and non-toxic acid addition salts thereof wherein each X is a halogen atom or a C1-4-alkyl radical; T is a piperazine, methylpiperazine, homopiperazine or methylhomopiperazine residue; Z is a straight or branched alkylene or alkenylene radical; A is an oxygen or a sulphur atom and Y is naphthyl, halonaphthyl, or <FORM:0974717/C1/2> where each R is independently a hydrogen or halogen atom or an amino, nitro, C1-4-alkylamino, di-(C1-4-alkyl) amino, C1-4-alkoxy, alkyl, alkenyl, aralkyl or cyclohexyl group, and the preparation thereof by refluxing equimolar amounts of a compound of the formula <FORM:0974717/C1/3> and a compound hal-Z-A-Y where hal is a chlorine or bromine atom, in an inert solvent and in the presence of a hydrohalide acceptor and, if desired, forming the acid addition salt. Acid addition salts include ascorbates, salicylates and nicotinates. The compounds are anti-schistosomiasis agents. 1-(3-Chloro -4- methylphenyl/piperazine is prepared from diethanolamine, 3-chloro -4- amino-toluene and hydrobromic acid. Similarly are prepared 1-(3, 4-dimethylphenyl)piperazine, 1-(3-bromo-4-methylphenyl)piperazine and 1-(3-chloro -4- methylphenyl) -5- methylhomopiperazine.  Halides of the formula hal-Z-A-Y are prepared by reacting an appropriate phenol with an alkylene dibromide. A comprehensive list of such halides is given.
Patent GB-913724-A (GB)
Title: An improved process and apparatus for carrying out mass polymerisation
IPC: C08F2/02
Filed: 1961-02-27
Abstract: A process for mass polymerization in an autoclave having rotatable ribbon agitators (see Group II) is described with reference to an example in which 210kg. vinyl chloride were introduced into an autoclave of 500 litres capacity and 0,06 kg. or 0,03% of azodiisobutyronitrile added as catalyst.  10 kg. of monomer were removed in degassing to expel air and the agitator rotates at 70 r.p.m.  The pressure mounted to and was maintained at 9,05 kg./cm2, and the temperature was maintained at 54,5 DEG C., by cooling and heating as required, until after 16 hours the pressure fell to 8,5 kg./cm2.  The pressure was then released, the apparatus swept by nitrogen and the product discharged, being a finely pulverized polymer of vinyl chloride representing a yield of 73,21% of the monomer, having an apparent density of 0,480 and more than 88% passing through a 250 micron mesh sieve.  The resin had a polymerization coefficient K of 63,1, a low polymer rate of 4,8% by weight and a stability to heat (200 DEG C.) of 19 minutes.  The physical properties of the product may be controlled by selecting the rate of rotation of the agitators.  The apparatus may also be used for polymerization in suspension or emulsion or applied to other monomers, e.g. vinyl fluoride, vinylidene chloride, acrylic nitriles, ethylene and propylene.
Patent GB-225759-A (GB)
Title: Improvements in and relating to fire-arms
IPC: F41A21/36
Filed: 1923-05-31
Abstract: 225,759. Dibovsky, V. V. May 31, 1923. Machine guns; ordnance breech-mechanism; design.-Guns such as are described in Specfications 131,016 and 224,927 are provided at the muzzle end of the barrel with a special form of gas baffle for imparting the forward movement to the barrel on discharge. The baffle attachment includes gas outlets 6, Fig. 4, adapted to direct the escaping gases forwardly on to the exposed rear surface of a baffle-plate or dish 5 connected to the barrel 2, with or without slight play against the action of a spring 15. The baffle-plate, which extends radially beyond parts of the gun in the immediate rear, has its front and rear surfaces exposed to the atmosphere. The baffle may have conical enlargements 8, 12, Fig. 2, forming one or more internal baffles 10, 13 in advance of the gas outlets. In a modification, the baffle is mounted on a sleeve which slides on the barrel through a limited distance to unlock the barrel before moving it forwards. Specifications 5099/00, 131,040, and 165,364 are referred to.