baber/WOPTO huggingface dataset:
Patent GB-753920-A (GB)
Title: Improvements in and relating to safety couplings
IPC: F16D7/02
Filed: 1954-05-14
Abstract: 753,920. Safety release couplings. BURKHARDT. G. May 14, 1954 [May 15, 1953], No. 14162/54. Class 80(2) A centrifugal clutch is interposed between the driving shaft and the clamping ring of a coupling of the type described in Specification 464,969 to cause release of the coupling upon overload. As shown, bushings 3, 4, fixed to the driving and driven shafts 1 2, respectively, may be axially slotted and are surrounded by a sleeve 5 with a tapered perimeter. Needle rollers are located in a slightly inclined position between the sleeve 5 and the clamping ring 8. Rotation of the latter causes it to move axially and clamp the bushes 3, 4 together. The degree of clamping is limited by the abutment of a nut 9 on the ring 8 with a flange 4b on the bushing 4. Pawls 11 and weighted members 12 are pivoted on pins 10 fixed to the bushing 3. At speeds below the normal operating speed springs 13 acting on the members 11, 12, keep the noses of the pawls 11 clear of teeth 14a formed on an annulus 14 fixed to the ring 8. If the torque exceeds the desired value slip occurs between the bushings 3, 4. If the pawls 11 are in the engaged position this results in relative rotation of the ring 8 and sleeve 5 to cause release of the clamping pressure between the bushings 3, 4. The coupling remains disengaged until reset manually. The bushing 3 may be in two parts 3, 3a interconnected by spiral springs 22 located in arcuate recesses 20, 21, in the two parts. The bushing 4 may likewise be in two parts 4, 4a, with similar springs therebetween.
Patent GB-287355-A (GB)
Title: Improvements in an auxiliary wheel for motor-cars
IPC: B60B11/10
Filed: 1927-05-26
Abstract: 287,355. Hagen, E. May 26, 1927, Pneumatic and non-pneumatic tyres side by side; expanding wheels.-An auxiliary non-pneumatic wheel 4 is mounted beside, a pneumatictyred wheel and is adapted to be expanded on escape of air from the pneumatic tyre to the diameter of the latter. The auxiliary wheel is composed of telescopic sections connected by spokes 2 having cranked ends to a disc 1 rigid with the main wheel. The sections are expanded by a spring-controlled rotatable ring 7 connected thereto at diametrally-opposed points by two stays 10. The ring is held against rotation by means of a spring-controlled plunger which is retained in position by the air pressure in the tyre and is released on escape of air.
Patent GB-262660-A (GB)
Title: Improvements in economisers or evaporators
IPC: F22D1/26
Filed: 1926-06-04
Abstract: 262,660. Evensen, E. C. June 4, 1926. Feedwater, heating.-A heater mounted in a flue on a hinged door 2 comprises a cast iron frame 4 having a steam hood 5 cast integral with it or detachably affixed. On both sides the frame is covered by corrugated sheet metal 6 fastened along the edges and also intermediately by means of bolts 7 secured to longitudinal ribs 8 parallel with the side walls of the frame.
Patent GB-347493-A (GB)
Title: Improvements in the manufacture and production of acetylene
IPC: C07C4/02
Filed: 1930-05-08
Abstract: Acetylene is produced by subjecting gaseous hydrocarbons or gases containing them to incomplete combustion with an amount of oxygen or gases containing it insufficient for complete combustion to carbon dioxide and water, in the presence of elementary silicon or substances containing it.  The process is preferably carried out at pressures of 0,5 to 5 atmospheres and at temperatures of 700-1100 DEG C.  Other gases, such as hydrogen or nitrogen, may be present.  The acetylene may be used directly for chemical conversions such as the synthesis of acetaldehyde.  In examples: (1) a mixture of 90 per cent of propane and butane with nitrogen, hydrogen, carbon dioxide and methane is burned with air in contact with a cylinder of pressed silicon heated electrically to 850-900 DEG  C.; (2) a mixture of 25 per cent of olefines, 15 per cent of hydrogen and 50 per cent of methane is similarly treated.
Patent GB-220996-A (GB)
Title: Improvements in interrupters especially suitable for use in wireless telegraphy
IPC: H03B11/06
Filed: 1923-05-30
Abstract: 220,996. Bubb, W. r. May 30, 1923. Electromagnetic inrupters or buzzers especially suitable for use in wireless telegraphy comprise a trembler blade secured at both ends and a co-operating contact which can be adjusted longitudinally of the blade in order to vary the frequency of the buzzer. As shown in Fig. 2, the vibrating blade A is secured at one end by a screw B to a fixed bracket C and at the other end by a screw D to the yoke E of the bobbin F. The platinum contact G is carried by a spring H secured to the end of a threaded pin J provided with a knurled head K. The pin passes through a tapped block or nut L which can be moved parallel to the length of the blade A in a slot formed in the fixed bracket N and secured in the adjusted position by the knurled nut O. Adjustment of the contact transverse to the blade is provided by the head K.
Patent GB-459641-A (GB)
Title: Improvements in or relating to coin-freed vending machines
IPC: G07F5/26
Filed: 1936-05-20
Abstract: 459,641. Coin-freed article-delivery apparatus. BRUS, G. J., 19, Van Tuyll van Serooskerkenweg, Amsterdam. May 20, 1936, No. 14309. [Class 27] Relates to coin-freed vending machines of the kind comprising a number of compartments 2, closed by hinged doors 4, any one, but only one of which can be opened at will after insertion of a coin. According to the invention, the mutual locking mechanism for the doors is housed wholly in an enclosed space extending along one side of the compartments and entirely separated therefrom by one of the side walls, the swinging doors being pivotally mounted on shafts 6 which extend through that side wall into the enclosed space. The shaft 6 for each door bears a segment 7, the curved surface of which in all positions of the door is directed towards the inner side of the machine. The segments 7 coact with locking pieces 11 slidable transversely through slots in a rod 8 which is provided with a longitudinal slot 10 holding vertically slidable blocking members 12, one for each compartment. When a door is opened, the corresponding locking piece 11 is pushed in to separate a pair of blocking members 12 thereby preventing any of the other doors from being opened. None of the blocking members can be moved unless a coin has first been inserted to release them for movement.
Patent GB-1012440-A (GB)
Title: An electric plug and socket coupling
Inventor: EDWARDS JOHN
IPC: H01R13/642
Filed: 1962-04-13
Abstract: 1,012,440. Two-part coupling. LIGHT & POWER ACCESSORIES CO. Ltd., and J. EDWARDS. Dec. 10, 1962 [April 13, 1962], No. 14326/62. Heading H2E. At least one pin and the corresponding socket of a two-part coupling are so shaped that they may be mutually engaged only when adjusted to bring their respective shapes into coincidence, the adjustment being effected subsequent to the manufacture of the coupling. In Fig. 1 the earth pin 3 and the associated socket are D-shape in cross-section and can be extracted and re-positioned in any one of eight positions corresponding to the eight positions of their octagonal heads by removing retaining plate 1D. The earth pin thus constitutes a key pin which prevents engagement with an incorrectly adjusted socket. The heads of the contact pins and their socket tubes may be square or polygonal according to the number of adjustments required. Fluid tight seals 2F and 4A of resilient material such as neoprene are situated between the insulating bodies and the outer casing and between the contact elements and their respective bodies. The conductors are secured to the pins or sockets by means of an insulating sleeve 5A screwed into position from the rear and carrying a conducting nipple 5C, Fig. 12, which may either clamp the conductors at their ends or in which they may be soldered or crimped.
Patent GB-1431674-A (GB)
Title: Charge storage devices
IPC: H01J29/44
Filed: 1973-03-26
Abstract: 1431674 Semiconductor devices; image pick-up tubes WESTINGHOUSE ELECTRIC CORP 26 March 1973 [4 April 1972] 14333/73 Headings H1D and H1K A semiconductor charge storage target com prises a planar input surface and a profiled opposite surface which, in use in a pick-up tube, is scanned by a low energy electron beam. The profiled surface comprises recesses 56, Fig. 6, formed by etching an N-type Si wafer, which define pillars 54. An insulating layer 57, e.g. of SiO 2 , is applied to recesses 56, and a conductive contact 60 is applied to the end of each pillar 54 and extends to cover part of insulating layer 56. A region of each pillar below contact 60 is of P+-type, and the planar surface region 52 is made N + by diffusion. As described, the planar surface of the Si wafer is first oxidized, and an etching mask comprising successive layers of Si 3 N 4  and SiO 2  is formed on the opposite surface by vapourdeposition and photo-etching. The recesses 56 are then formed by etching the wafer with a solution of HNO 3 , HF, and acetic acid through the etching mask, which is undercut. Layer 57 is formed by heating in a wet O 2  atmosphere, and the etching mask is removed. Contacts 60 are formed by epitaxial growth of p-doped Si using hydrogen reduction of SiCl 4  doped with B 2 H 6  in the presence of HCl injection. The P+ regions below contacts 60 are formed by out-diffusion of boron from the contacts; this may be supplemented by a diffusion of impurities into the pillars before contact formation. The water is then thinned by etching, a support rim optionally being retained around the wafer periphery, and N+ region 52 is formed by in-diffusion of POCl 3 . In the pick-up tube (Fig. 1) incident radiation, focused by a lens 25, falls on to a face plate 20 of glass, quartz or fibre optic construction. A photocathode 22 on the inner surface of face plate 20 emits photoelectrons which are focused by an electrode 27 on to the planar surface of a target 24 of the invention. The profiled surface of the target 24 is scanned by an electron beam generated by an electron gun 26, through a grid 34. Electromagnetic focusing and deflection coils 36, 38 are shown, although electrostatic means may be used. Photocathode 22 is connected to a high negative voltage source 58, while target 24 is connected through an output resistor 44 to a low positive voltage source 42.
Patent GB-828922-A (GB)
Title: Bonding, coating and impregnating process
Inventor: FORD ALLAN RAYMOND
IPC: B32B27/00
Filed: 1956-05-09
Abstract: Fibres or fabrics of polyethylene terephthalate are bonded, coated or impregnated by treating them with a polyester softening at 140-230 DEG  C. and derived from a glycol of the series HO(CX2)nOH, where X is H or CH3 and n is 2-10, and terephthalic acid, with or without another aromatic dicarboxylic acid.  The polyester may be applied by deposition from a solvent.  Specified polyesters are those derived from dimethyl terephthalate and (a) 1 : 4-butanediol, (h) hexamethylene glycol, (c) 2 : 2-dimethyl-1 : 3-propanediol, (d) and (e) a mixture of ethylene glycol and 1 : 4-butanediol; and (f) ethylene glycol and dimethyl isophthalate.  In an example a cord of polyethylene terephthalate is dipped into a chloroform solution of polyester (f) whereby it is stiffened and made more cylindrical in form.  The invention of Specification 783,555 is disclaimed.ALSO:Fibres or fabrics of polyethylene terephthalate are bonded, coated or impregnated by treating them with a polyester softening at 140-230 DEG  C. and derived from a glycol of the series HO(CX2)nOH, where X=H or CH3 and n= 2-10 and terephthalic acid and, if desired, another aromatic dicarboxylic acid (e.g. isophthalic or phthalic acid).  As a polycondensation catalyst there may be used an alkali metal hydroxide or alkoxide, a mineral acid, a metal oxide (e.g. litharge) or a metal salt. Some of the polyesters are soluble in chloroform.  Examples describe polyesters obtained by polycondensing in the presence of litharge dimethyl terephthalate and (a) 1 : 4-butane diol, (b) hexamethylene glycol, (c) 2 : 2-dimethyl-1 : 3-propane diol; (d) and (e) a mixture of ethylene glycol and 1 : 4-butane diol; (f) ethylene glycol and dimethyl isophthalate.  The invention of Specification 783,555 is disclaimed.
Patent GB-403129-A (GB)
Title: Improvements in and connected with the construction of pipes, conduits, sewers or the like
IPC: E03F3/06
Filed: 1932-05-21
Abstract: 403,129. Moulding conduits in situ. CITY CONSTRUCTION CO., Ltd., and PATERSON, J., Florence Road, Edmonton, London. May 21, 1932, No. 14487. [Class 20 (ii).] Concrete pipes, conduits, sewers, and the like, or supports therefor, are cast in situ in trenches by positioning spaced-apart pre-cast profile units in the trench, supporting core shuttering on these units, and then casting concrete in the spaces between the units and around the shuttering. The profile units 1 are provided with apertures 10 through which the reinforcement 11 passes, and which allow concrete to pass through, so that the cast conduit is monolithic. The units may be provided with spaces to receive a glazed or other channel about which the concrete is cast. The top of the sewer may be formed of pre-cast plates 5 having projections 7 and bevelled edges 6, two of which rest on the edges of the conduit. The transverse edges may be separated by projections 7a, the seams thus formed being subsequently filled in.
Patent GB-1032572-A (GB)
Title: Improvements in or relating to optical masers
IPC: H01S3/22
Filed: 1963-04-11
Abstract: 1,032,572. Optical masers. WESTERN ELECTRIC CO. Inc. April 11, 1963 [April 12, 1962], No. 14513/63. Heading H3B. In an optical maser in which the active medium is gaseous interaction surfaces are positioned in contact with the gaseous medium for selectively suppressing unwanted excitation states. In order to dispense with an auxiliary gas such as helium in a neon gas laser comprising a tube 11 and endplates 12, 13 enclosing the gas and which is pumped by R.F. oscillator 28, the Is metastable level of the neon has to be depopulated to reduce the excitation of the neon from the Is metastable state to the 2p excitation level, which excitation reduces the magnitude of the population inversion between the 2s and 2p levels and hence the possibility of maser action between these last two levels. The Is state of the neon is maintained at a very low level by promoting a high rate of collisions between the neon atoms in Is state and the solid walls of the gas-filled chamber which is achieved in accordance with one embodiment of the invention by attaching to the inner wall of the tube a plurality of fur-like members 29 extending radially toward the centre of the tube and extending longitudinally of the tube. The spacing between the surfaces of adjacent fins is made approximately equal to the mean free path of the particles in the metastable state to be depopulated but the spacing may be up to four times the mean free path. It is thought that either the atoms in the metastable state transfer their excitation energy to the surfaces during collisions therewith so producing depopulation of the metastable state or an excited electron is detached from the gas particle to produce a free electron and a positive ion. In an alternative embodiment, Fig. 2A, a plurality of fins 29, spaced apart by the proper distance and parallel to each other, extend along the length of the tube 11 and are slotted to provide a central opening. In both these embodiments the fins are made of fused quartz and are arranged so that they present a minimum area transverse to the optical wavefront passing along the tube 11. In a third embodiment, Figs. 3, 4 (not shown), the interaction surface is provided by a plurality of spaced perforated plates, the holes in the plates being of a diameter approximately equal to the mean free path of the particles and separated by a like distance. The holes are arranged in register defining a plurality of straight-through light paths between the end windows. The neon may be replaced by argon, krypton or xenon the levels of which are shown in Figs. 6, 7, 8 (not shown). Alternatively a mixture of neon and oxygen may be employed.
Patent GB-1437710-A (GB)
Title: Fixture for a blast cleaning machine
IPC: B08B5/02
Filed: 1975-04-09
Abstract: 1437710 Blasting WHEELABRATORFRYE Inc 9 April 1975 [15 April 1974] 14530/75 Heading B3D A portable device 10 for movably securing a blast cleaning machine to a ferromagnetic surface 20 comprises a rectangular frame 12, 14, electromagnetic means 18 on the frame for releasably securing the frame to the surface, a carriage 22 movable on the frame, and means 40, 42 for linking the blast cleaning machine to the carriage for movement therewith and for maintaining the machine in intimate contact with the surface. The frame consists of longitudinal members 12, which may be 20 to 30 feet long, and transverse member 14 of hollow rectangular cross-section joined to form a rectangle. Legs 16 are provided at each corner of the frame and have electromagnets 18 for releasably securing the frame to the surface 20. The carriage 22 is guided for movement along the members 12 by rollers (26, 28, 30, 32, 34, 36, Fig. 2, not shown) and has a pair of links 40, 42 for carrying the blast cleaning machine which has a seal 50 and is urged towards the surface by a pair of hydraulic or pneumatic actuators 52. The blast cleaning machine consists of a centrifugal wheel which is disposed in a housing 44 and is driven by a motor 46 to project particulate material supplied from a hopper 49 under the control of a valve 48 against the surface. A chain 68 which is guided over sprockets 64, 66, one of which is driven from a motor 60 and gear-box 62, and is connected at its ends 70, 72 effects movement of the carriage along the members 12.
Patent GB-593723-A (GB)
Title: Improvements in, and relating to, tongs and similar gripping devices
IPC: B25B7/02
Filed: 1946-05-09
Abstract: 593,723. Tongs. BAKER, J. May 9, 1946, No. 14553/45. [Class 61 (ii)] In tongs. and ,the like of the kind provided with claw-shaped jaws which are attached to gripping members with freedom for limited universal swivelling movement, each gripping member 10 is formed with a rounded extremity having a hole 11 to receive a pin 12 carrying a fixed claw-shaped jaw 13. The pin has a ball head 12 which seats loosely in an enlargement of the hole. The shank of the pin is tapered and turned over at the end 14 to secure the claw.
Patent GB-782887-A (GB)
Title: Improvements in the manufacture of organic compounds containing nitrogen, arsenic, sulphur or selenium
IPC: C07F9/70
Filed: 1953-10-07
Abstract: Compounds of the general formula <FORM:0782887/IV (a)/1> (wherein R represents hydrogen or an alkyl, aralkyl, aryl or heterocyclic radical, R1 represents an alkyl, carboxy-substituted alkyl, aralkyl, aryl or heterocyclic radical, n is a whole number, and A is SY, SeY, AsY2 or NY2, where Y represents hydrogen or a monovalent hydrocarbon radical) are prepared by reacting an organo-metallic compound R1MX (where M represents magnesium or zinc and X halogen) with an aldehyde or ketone R-CO-(CH2)nH to give a compound of the general formula <FORM:0782887/IV (a)/2> and reacting this with a compound of the general formula X1A (wherein X1 represents hydrogen, or a monovalent metal when A is SY, SeY or AsY2).  In examples: (1) acetaldehyde is warmed with benzyl magnesium chloride in ether and the product treated with methyl amine to produce C6H6.CH2.CH(CH3).NHCH3; (2) the methylamine in (1) is replaced by methyl mercaptan, giving C6H5.CH2.CH(CH3).SCH3; (3) methyl ethyl ketone is warmed with phenyl magnesium bromide in ether and the product treated with ammonia gas to form <FORM:0782887/IV (a)/3> (4) and (5) acetophenone and propiophenone similarly yield (C6H5)2C(CH3).NH2 and (C6H5)2C(C2H5).NH2; (6) aceton is warmed with b -pyridyl magnesium bromide in ether and the product treated with ammonia gas to produce (CH3)2C(C5H4N).NH2; (7) methyl ethyl ketone is warmed with methyl magnesium iodide in ether and the product treated with AsH3 to give (CH3)2C(C2H5).AsH2; (8) the AsH3 in (7) is replaced by H2Se, producing (CH3)2C(C2H5).SeH; (9) acetone is warmed with ethyl bromoacetate and zinc foil in benzene, and the product is treated with NH3 to form <FORM:0782887/IV (a)/4> Other reactants specified are: zinc-methyl bromosuccinate; acid salts of AsH3, H2S and H2Se, and mono-substituted organic derivatives of H2Se.
Patent GB-571610-A (GB)
Title: Improvements in guards for machine tools
IPC: F16P1/02
Filed: 1943-09-06
Abstract: 571,610. Machinery guards. THERMOPLASTICS, Ltd., and ANDREWS, C. G. Sept. 6, 1943, No. 14587. [Class 80 (iv)] A guard for machine tools, particularly drilling-machines, consists of two telescopic sleeves, of which the sleeve 1, of transparent material, is freely slidable in the upper sleeve 2 which is secured to the tool-feeding part, both sleeves being of generally cylindrical form. After the sleeve 1 has been inserted into the sleeve 2, the lower end of the latter is crimped or pressed in at 3 to provide two shoulders 4 on which can rest an enlarged end 5 of the sleeve 1 which is biassed to its lowest position by gravity or a spring. Ribs 6 on the sleeve 1 enter guideways 7 on the sleeve 2 to ensure axial movement only, but these ribs terminate short of the lower end of the sleeve 1 so that when the latter is pushed fully into the sleeve 2 it can be rotated slightly against stops 9 to bring the ends of the ribs over the shoulders 4 to retain the sleeve in its raised position. The upward movement of sleeve 1 is limited by a metal ring 8 secured to its lower end. In a modified securing arrangement, the outer sleeve is flanged over at its upper end for attachment of a plate which itself is attached to an external vertical spindle by means of which the plate is secured to the tool-feeding part.
Patent GB-1012362-A (GB)
Title: Improvements relating to fuel cells
Inventor: GILLIBRAND MAURICE IVAN
IPC: H01M4/96
Filed: 1962-04-16
Abstract: 1,012,362. Fuel cells. CHLORIDE ELECTRICAL STORAGE CO. Ltd. April 4, 1963 [April 16, 1962], No. 14590/62. Heading H1B. A fuel cell electrode comprises a hollow moulded carbon body including two opposed flat porous walls 3, 4, and an inlet for the supply of fuel or oxidant. The carbon body is surrounded by metal gauze 1, e.g. of silver or nickel embedded in the surface of the body, and two metal mounting posts 11 are soldered to lugs projecting from the gauze, the electrode being sealed with a resin layer 12. One post 11 is hollow to provide the inlet, which may lead to a thin perforated pipe winding back and forth across the inner cavity to uniformly distribute the fuel or oxidant within the electrode, Fig. 5 (Fig. 3, not. shown). The electrodes are suspended from the lid of the fuel cell by the posts 11 which also provide electrical connections. Alternatively, the gauze and metal posts 22, 23 are secured by bolting together between clamping plates. The carbon walls 3, 4 are made from moulding powders as described in Specifications 931,732 and 1,007,490.