baber/WOPTO huggingface dataset:
Patent GB-806981-A (GB)
Title: Improvements in and relating to coin-freed prepayment mechanism
Inventor: LOFTUS EDWARD FREDERIC
IPC: G07F15/02
Filed: 1956-05-17
Abstract: 806,981. Prepayment mechanisms. BRADDOCK & CO. Ltd. Aug. 13, 1957 [May 17, 1956], No. 15364/56. Class 27 Coin-fre@ prepayment mechanism for rendering available an article or a quantity of gas, electricity or other commodity comprises a coin slot closing disc o rotatable by a knob g and having a rigid projecting arm h which engages with a quantity wheel striker plate d to hold it in the position to which it may be set by optional coins of different dimensions inserted through a slot or slots. An inserted shilling strikes a pivoted member b and moves a pin m on the member b to the top of the first leg of a slot k in the striker plate d so that a dog r engages a quantity wheel t. As the closing disc is rotated, the arm h moves with it and its pointed end engages a hole or depression v in the striker plate and locks the plate. On insertion of a halfcrown, the pin b is moved to the bottom of the second leg of the slot k, a second dog s on the striker plate engages both quantity wheels t and u and the end of the arm h locks under the edge of d<1> of the striker plate. If no coins are inserted the arm h engages a hole wand holds the striker plate in inoperative position. Full stroke of the closing disc is ensured by a pawl engaging depressions in the rear face of the coin plate a.
Patent GB-1260541-A (GB)
Title: An anti-blast valve
Inventor: VALDENAZZI LUIGI GIOVANNI
IPC: A62C4/02
Filed: 1969-03-24
Abstract: 1,260,541. Valves. L. G. VALDENAZZI. 24 March, 1969 [23 March, 1968], No. 15392/69. Heading F2V. [Also in Division G3]  A quick-closing valve is operable independently by control means, and by the direct arrival of a shock wave propagated along a pipe-line, the arrangement being that the latter action serves also to initiate the operation of the control means. The valve member 13 is held open against a bias, e.g. of a spring 14, by hydraulic pressure in a cylinder 6 acting on a plunger 5 which carries the valve member 13. This cylinder has a set of ports including some 9 of larger diameter and others 10 of smaller diameter, which communicate with a chamber supplied through a restriction 8 and exhausted through a dump valve 15 to allow the main valve 13 to close. The closing movement is progressively damped owing to successive obturation of the ports 9, 10 by a collar 11 on the plunger. Actuation by the shock wave is through an internal plunger 16 carrying a disc 18 responsive to the wave front. This plunger initially connects the cylinder 6 to drain through ports 19, 20. The disc 18 in its travel engages an electric contact 22 arranged to initiate operation of the dump valve 15. The inertia of the plunger 16 also assist the operation of the device, by engagement with an abutment 24 on the main plunger 5. A rubber closure surface 29 is vulcanized on to the valve member 13. This member is loosely carried on the plunger 5 and biased by a spring 26. The flow passage is of converging-diverging form including a recovery section 27 in the pipe. Operating circuit equipment may be housed in a space 28 surrounding the cylinder.
Patent GB-178751-A (GB)
Title: Improvements in or relating to meat slicing machines
IPC: B26D7/02
Filed: 1921-06-04
Abstract: 178,751. Smith, G. A. June 4, 1921. Cutting slices in succession; holders and boards.-In meat-slicing machines of the kind wherein the reciprocating movements of the meat-supporting table are imparted by hand, means are provided for feeding the meat forward as the table is reciprocated. A meat-grip or clamp 1 with a boss 2 turns on and slides along an horizontal rod 3 carried by the table 4. It is provided with prongs 5 to hold the meat, and a handle 6. An end device for holding the meat when only a thin end or piece is left comprises a plate 7, with hooks 8 to hold the meat, which is attached to the bar 1 by projecting pins 9 on the back fitting into corresponding holes 10 on the bar. The end device may be supported by a foot or roller 11.
Patent GB-1378220-A (GB)
Title: Direct current dynamoelectric motors
IPC: H02K3/26
Filed: 1972-04-04
Abstract: 1378220 D.C. electric motors INTERNATIONAL BUSINESS MACHINES CORP 4 April 1972 [5 April 1971] 15499/72 Heading H2A A D.C. dynamoelectric motor comprises a rotary armature 10 which includes an insulating support member, e.g. an epoxy/fibre glass tube, upon which is a printed circuit winding formed as a plurality of interconnected conductors, e.g. 34, 35, each having a collinear portion, e.g. 36, 37, which lies in a cylindrical surface and, inclined to the collinear portion, end crossover non-collinear portions 38 . . . 41 which lie on extensions of the cylindrical surface, and a permanent magnet field producing structure which is so constructed and arranged relative to the surface that the collinear portions and a substantial portion of the crossover portions are mounted to rotate in a working magnetic field gap 25. By substantial portion is meant either the whole of the crossover portions or, as shown, one and one-half crossover portions. The conductors may also be disposed, as shown dotted, on the inside of the support member, which is tubular, and it is explained with reference to Fig. 4, how current in the crossover portions may be regarded as vectors of which some act circumferentially to aid rotation of the armature. The structure comprises four equispaced permanent magnets, e.g. 20, 23, having flux focusing soft Fe polepieces (24), Fig. 2, and whose poles alternate circumferentially in polarity. They are supported in a magnetic shell 19 supported between Al end plates 13, 14 of which the latter supports in cantilever fashion a magnetic flux return path member 17. The armature 10 is supported at one end by a phenolic glass cup 11 fixed to an output shaft 12 supported by bearings 15, 16. In an area 26 the collinear conductors are engaged by four equispaced brushes in respective holders, e.g. 27, 29, only two of which brushes are used for commutation the other two being for mechanical stability. The motor is cooled by air supplied under pressure to an inlet 31 and leaving at four outlets 32, 33.
Patent GB-168174-A (GB)
Title: An improved preparation applicable for use in treating textile fabrics or other materials for stiffening and proofing the same
IPC: D06M15/17
Filed: 1920-06-08
Abstract: A preparation for stiffening and proofing textile fabrics and the like consists of a mixture of ester gum (glycerine resinate) and ordinary resin dissolved in amyl or butyl acetate, acetone, or petrol.
Patent GB-399271-A (GB)
Title: Improvements relating to fluid pressure-operated systems for operating windscreen cleaners or other vehicle accessories
IPC: B60S1/06
Filed: 1932-06-01
Abstract: 399,271. Windscreencleaners &c. TRICO PRODUCTS CORPORATION, 817, Washington Street, Buffalo, New York, U.S.A. June 1, 1932, No. 15575. Convention date, March 17. [Class 138 (i).] A device for insertion in the conduit between a fluid-pressure-operated windscreen-cleaner or other similarly-operated accessory of a motor vehicle and a source of variable operating pressure comprises a reservoir having a port for communication with the source of operating pressure and a second port for communication with the windscreen-cleaner or other accessory, a valve for controlling the first port to prevent passage of fluid from the source into the reservoir, and means for automatically controlling the flow of air from the cleaner or other accessory into the reservoir through the second port. In the construction shown, a reservoir 5 is connected to the intake manifold 2 of a motor vehicle through a valve 12 and to a windscreencleaner 1 through an adjustable valve 19. The valve 12 consists of a disc of heavy flexible fabric supported by a flexible perforated diaphragm 13, and is normally held closed by a spring 15. The valve 19 is adapted to be closed, against the action of an unseating spring 20, by suction on the upper side of the valve. A diaphragm 21 is adapted to bear against the valve, one side of the diaphragm communicating with the atmosphere through a port 22, and the other side being in communication with the windscreen-cleaner. A bleed passage 23 provides restricted communication between the cleaner and the reservoir 5 when the valve 19 is closed. The pressure of the spring is adjustable by a screw 24.
Patent GB-826615-A (GB)
Title: Improvements in or relating to electric discharge lamps
Inventor: NELSON EVAN HERBERT
IPC: H01J61/34
Filed: 1955-05-31
Abstract: 826,615. Discharge lamps. GENERAL ELECTRIC CO. Ltd. May 30, 1956 [May 31, 1955], No. 15603/55. Class 39(1). In an electric discharge lamp including a light-transmitting outer jacket within which the discharge envelope is mounted, at least one surface of this jacket, and/or of a light transmitting screen located between the envelope and the jacket are or is coated with a thin transparent film of such thickness and index of refraction that the reflectivity of the coated surface for at least part of the visible radiation from the discharge is reduced and the transmissivity of the screen increased by the presence of that film. Preferably the product of the index of refraction of the film and its actual physical thickness, i.e. its optical thickness is equal to, or to an odd multiple of, a quarter of the wavelength of that part of the visible radiation concerned and its index of refraction is lower than that of the jacket or screen, being preferably equal to the square root of the latter index. A suitable film when used for sodium light is magnesium fluoride with an optical thickness of 1473Š. Specifications 801,482 and 826,616 are referred to.
Patent GB-610900-A (GB)
Title: Improvements relating to artificial personal ornaments
IPC: A44C1/00
Filed: 1947-05-08
Abstract: 610,900. Jewellery. BLACKMORE, G. E. May 8, 1947, No. 15650/46. [Class 43] An ornament, e.g. a brooch, ring, dress-clip, earring, bracelet or hair clip, has a cavity for an absorbent wad or filling containing perfume, the cavity having a passage downwardly directed to it from a mouth eccentrically placed with respect to the body of the ornament, so that a perfume phial can be applied to the passage and the perfume discharged without waste. The ornamental part B of a twopart brooch has a central depression C at its back, against which fits a rear part D, carrying a pin E and having a passage F leading to the cavity C which houses an absorbent wad G. The entrance H to the passage F is shaped to fit the mouth of a perfume bottle to facilitate refilling. Gaps J in the front part B permit escape of the perfume.
Patent GB-1002993-A (GB)
Title: Fabric take-down mechanism for flat bed knitting machines
IPC: D04B15/90
Filed: 1964-04-16
Abstract: 1,002,993. Knitting-machines. A. COPPO. April 16, 1964 [April 18, 1963], No. 15788/64. Heading D1C. Fabric take down mechanism for a flat bed machine has in addition to the usual draw-off rollers 6, 7 a pair of take-down rollers supported on shafts 9a, 10 positioned just below the knitting region. The shafts are gear driven, the shaft 9a being rigidly fixed to the machine frame but the shaft 10 is supported by springs 11 which urge the roller on shaft 10 into contact with that on shaft 9a. The roller on shaft 10 is made up of sections of a resiliently yieldable material such as foamed rubber. The roller on shaft 9a is made up of metal sections secured on the shaft.
Patent GB-1096280-A (GB)
Title: Improvements in or relating to semiconductor devices
IPC: H01L27/00
Filed: 1965-04-13
Abstract: 1,096,280. Semi-conductor devices. PHILCO-FORD CORPORATION. April 13, 1965 [April 13, 1964], No. 15857/65. Heading H1K. An integrated dual planar transistor has a rectangular common collector 66 embraced at opposite ends by two C-shaped emitters 64. The collector and emitters are produced simultaneously by diffusion through windows etched (using a photo-resist method) in a silicon oxide mask 52. The device may be used as a chopper.
Patent GB-312278-A (GB)
Title: Improvements in or relating to ignition timing and distributing apparatus
IPC: F02P5/06
Filed: 1929-05-23
Abstract: 312,278. Soc. de Paris et du Rh¶ne. May 23, 1926, [Convention date]. Timing.-Automatic adjustment according to engine speed is obtained by a centrifugal device consisting of masses 29 mounted by means of side plates 30 about a spindle 3 traversing the enginedriven shaft 1. A link 9 connects the governor to the base 8 of the cam 12 and may work within a groove in the shaft. The cam itself need not then be keyed to the shaft. The movement of the masses 29 is restrained by springs, the tension of which may be varied by connecting one end of each to discs 32 adjustable on the spindle 3. The cam 12 is shaped so as to permit constant time of contact closure with varying speed, and may be of insulating material. The high tension distributor contacts are situated in the head 23 and co-operate with the rotary arm 21 on the upper end of the shaft 1. Specification 304,035, [Class 38 (v), Electric switches &c.], is referred to.
Patent GB-659240-A (GB)
Title: Improvements in or relating to apparatus for mixing or working materials, particularly pastes, especially chocolate pastes
IPC: B01F7/00
Filed: 1949-06-16
Abstract: 659,240. Mixing appliances. SIMON, A. C. and ATELIERS HEUZE. MALEVEZ & SIMON REUNIS SOC. ANON. June 16, 1949, No. 16116. [Class 86] Apparatus for mixing chocolate and other pastes comprising a tank, a number of main stirrers or the like mounted in a common movable supporting frame and adapted to be positively rotated about their own axes to cause in the mass of materials, internal movements along certain directions in one plane, and additional stirrers adapted to cause internal movements in the mass along certain other directions not in that plane and arranged in the interspaces between the main stirrers, characterized in that the said stirrers depend from the common supporting frame for the main stirrers and are not arranged to be positively rotated about their own axes. As shown in Fig. 1 a rotating frame 30 supports stirrers 27 which are rotated by means of planetary gearing to move the material in a horizontal plane while stirrers 5 which are not positively rotated and which comprise sloping blades 5 secured to shafts 3 move the materials in a vertical plane. The shaft 3 may be secured at an angle to the vertical axis xx and at a desired radial distance along the arm 6 by means of a set screw 7. In Fig. 6 the stirrer 5 comprises a member twisted about its longitudinal axis preferably through less than 270 degrees and in Fig. 9 the stirrer 5 comprises a rotatable shaft 3 carrying a helix or helix section 14 such that when the stirrer is trailed through the material it rotates on its own axis. Specification 487,929 is referred to,
Patent GB-1097982-A (GB)
Title: Lasers
IPC: H01S3/095
Filed: 1965-04-14
Abstract: A laser comprises a liquid active medium from which light energy is emitted by chemical reaction.  Preferably for a continuous output the active medium is in fluid flow. Alternatively pulse operation is obtained by adjusting the chemical reaction so that insufficient light energy is released for laser action, but when the system is optically pumped by a flash source the threshold for laser action is exceeded.  For a liquid laser, a container holds an oxidizable substance as, for example, a solution of 1g of luminol and 2.5g of sodium hydroxide in 1 litre of water, while another container holds an oxidizing agent consisting of a 30% hydrogen peroxide solution, the two solutions being mixed before admission to a glass tube in the proportions of 5 c.c. of oxidizing agent to 100 c.c. of luminol solution.  The active medium in the glass tube radiates light characteristic of luminol, the energy liberated by the oxidation of luminol serving as the pumping energy. An alternative chemiluminescent reaction is the oxidation of aminosiloxenes.  A different wavelength of emitted radiation is obtained, by converting an oxidizable substance into a complex compound with a fluorescent ion such as + + +Cr or with ions of the rare earths, the reaction energy then being transferred to the fluorescent ion. The use of the europium complex of luminol is suggested.  A further alternative is the use in addition to an oxidizable substance of another compound of a fluorescent ion such as europium-tribenzoylacetonate, in which case the oxidizable molecules themselves need not be chemiluminescent.
Patent GB-1010974-A (GB)
Title: Improvements in or relating to disc brakes
IPC: F16D55/224
Filed: 1963-04-24
Abstract: 1,010,974. Disc brakes. H. TEVES, E. A. TEVES, and M. TAUSEND, [trading as ALFRED TEVES MASCHINEN-UND ARMATURENFABRIK K.G.]. April 24, 1963 [May 3, 1962], No. 16133/63. Heading F2E. In a spot-type disc brake, calliper arms 4, 5 pivotally mounted on the brake support are adapted to press brake friction pads 15 against the brake disc 11 and the free ends of the calliper arms are engaged by a lever transmission 8, 10 operated by an hydraulic piston and cylinder 17, 16 and/or mechanical linkage connected to the aperture 20 in the input lever 8, and a fixed rigid stop 23 which limits the rotation of the operating lever 8 of the lever transmission is associated with the non- rotatable brake support 1. The stop 23 is arranged on the casing of the brake cylinder 16 and co-operates with the piston-rod end 21 mounted on a gudgeon-pin 18 in the operating lever 8. A compression spring 26 is disposed between a stop-pin 25 mounted in the stop 23 and the piston-rod end 21 and a gap S at least equal to the brake clearance between the spring 26 and the piston-rod end 21 is provided when the brakes are in the " off " position. An automatic wear take-up device 14 may be provided between the spindle 10 and the operating lever 8.
Patent GB-353158-A (GB)
Title: Fire alarm or like indicator for notifying a change in temperature
IPC: G01K3/12
Filed: 1930-05-27
Abstract: 353,158. Fire-alarms. LONGWORTH, J. R., 16, Carnation Road, Farnworth, Bolton. May 27, 1930, Nos. 16240/30 and 4112/31. [Class 47 (i).] A thermal unit for an electrical fire alarm comprises an insulating block E having a recessed upper face e<1> in which a stout metal plate a and a mica or like sealing diaphragm a<2> are secured by screws j, l. The thermal device consists of a flexible metal strip b which carries at its centre a plug d<1> which is adapted to slide in a hole in the plate a, is fixed at its lower end to the diaphragm a<2>, and carries a contact d co-operating with an adjustable screw contact g. The strip b is secured at its ends to a compensator c comprising sloping arms c<2> and a central boss c<1> which is secured to the plate a. The armsc<2> bear on fixed or adjustable abutments a<3> carried by the plate a. The contact g is housed in a damp and dust-proof manner within a cavity e<2> in the block E, and screws through a metal plate f fixed in the cavity. Its outer end carries a pointer g<1> movable over a temperature scale h within limits defined by a stop pin h<1>. The scale is housed in a recess e<3> in the base of the block E, which has other recesses e', e<5> for housing the terminals i, k for the circuit leads i<1>, k<1> to the plates f and a respectively. The recesses e<4>, e<5> may be finally sealed with insulating material, and the scale h may be soldered in position when the device has been initially set. A perforated guard m, Fig. 5, is secured over the strip b by lugs m<1> on the guard engaging slots a<9> in the plate a. A hole m<2> in the guard gives access to the plug d<1> for testing purposes. The device may be arranged to work in a closed, instead of an open, circuit. In use, a rapid rise in temperature causes the strip b to sag. A slow rise of temperature causes a compensating expansion of the member c, until, at a limiting temperature, its arms c<2> are bent by engagement with the abutments a<3>. The block E has ears for mounting it, and the rear racesses e3, e<4>, e<5> may be protected by a back-plate.
Patent GB-1394672-A (GB)
Title: Radiation sensitive materials
IPC: G03C5/58
Filed: 1971-05-21
Abstract: 1394672 Photo-sensitive materials IMPERIAL CHEMICAL INDUSTRIES Ltd 11 May 1972 [21 May 1971] 16242/71 Heading G2C A light-sensitive material comprises a salt of formula: wherein R<SP>1</SP>-R<SP>10</SP> are H, halogen or organic substituents, R<SP>11</SP> and R<SP>12</SP>, if present, are halogen or organic substituents, Z is O or an integer, X is an anion of an acid with a pka less than 2.5 and m is 1 or 2, sensitized by a substituted isoalloxazine other than riboflavin. Riboflavin sensitized materials are disclosed in Specification 1310812. Specified sensitizers are those of formula: wherein the 9- position is substituted by a -(CH 2 )m-CH 2 -N-(R<SP>3</SP>) 2  or a-(CH 2 ) m -CH 2 - N<SP>+</SP>(R<SP>3</SP>) 3  X<SP>-</SP> group where m is 0, 1 or 2 and R<SP>3</SP> is hydrogen or alkyl and X is an anion or riboflavins containing phosphate groups. The material may be mixed with a water-soluble polymer, coated on a support, imagewise exposed to blue light and physically developed with a developer containing a silver salt to produce a silver image. Preferred polymers are polyvinyl alcohol or pyrrolidone, gelatine or alginates and the material may be exposed to electron beams.
Patent GB-639784-A (GB)
Title: Improvements relating to superheterodyne radio receivers
Inventor: GODDEN ALEC WILLIAM
IPC: H04B15/06
Filed: 1947-06-20
Abstract: 639,784. Superheterodyne circuits. ELECTRIC & MUSICAL INDUSTRIES, Ltd. June 20, 1947, No. 16292. [Class 40 (v)] Signal and heterodyne oscillations are fed to the same electrode of a mixer valve through circuits tuned respectively to the signal and heterodyne frequencies, each circuit being in part tuned to resonance by the reactance presented to it by the other. A high-frequency amplifier 1 is coupled to the mixer valve 2 via a variable inductance 9, condenser 13 and grid leak and condenser 14, 15. The oscillator 3 is of the cathode-coupled type and is coupled to the same grid of the mixer by means of inductance 25 condenser 30 and a blocking condenser 31. High-tension is applied to the anodes of the valves 1, 3 over chokes 8, 24 respectively. The circuit 9, 13 is tuned to signal frequency in conjunction with stray capacities 12, 16 and the reactance presented to it by circuit 25, 26, 30 over condenser 31, while the circuit 25, 30 is tuned to oscillator frequency in conjunction with stray capacity 26 and the reactance presented by circuit 9, 12, 13, 16 over condenser 31.
Patent GB-288061-A (GB)
Title: Improved means for securing flexible printing plates upon cylinders or other supports
IPC: B41F27/12
Filed: 1927-06-20
Abstract: 288,061. Gill, H. A., (Gilman Fanfold Corporation, Ltd.). June 20, 1927. Printing-surfaces.-Flexible printing-plates are secured upon cylinders or other supports by placing one end of the plate in a slot in the cylinder, &c. and attaching the other end of the plate to a spring-actuated plate-tensioning member. The leading end of the plate 12 is slidden into a slot 18 formed by a space between a pair of members 14, 17 secured together and fixed to the cylinder 10 adjacent to one edge of a longitudinal recess 13. The plate is wrapped round the cylinder and its free end is then bent backwardly upon itself to form a hook 30 adapted to engage the hook-like edge 21 of one or a series of plates 20 mounted in the recess 13. The plate 12 is tensioned by springs 23 arranged between bearing lugs 22 on the plates 20, and abutment plates 24 mounted in recesses in the opposite walls of the recess 13. Slots are provided in the plates 20 to receive a tool by which the plates may be raised against the pressure of the springs 23 to release the plate 12. The plates 20 may be retained in the raised position by resting on ledges 26.