baber/WOPTO huggingface dataset:
Patent GB-474510-A (GB)
Title: Improvements in or relating to pivoted or rotating shutter blades for photographic apparatus
IPC: G03B9/22
Filed: 1937-03-02
Abstract: 474,510. Making optical shutters. JUNGHANS, H. March 2, 1937, No. 6170. [Class 83 (ii)] [Also in Group XX] The blade for a pivoted or rotating shutter is stamped from a strip of metal which is thicker at one edge than at the other and has one flat or plane face. The point of insertion a for the actuating pin and the bearing bare provided in the thick portion c<10> of the tapered blade c<1>, which may have one or both faces plane. In Fig. 4, a thickened portion d is provided for the attachment and bearing apertures a, b, the remainder of the blade being tapered.
Patent GB-235297-A (GB)
Title: Improvements in devices for use in winding yarns into hanks or skeins and in unwinding therefrom
IPC: B65H75/14
Filed: 1924-03-11
Abstract: 235,297. Clarke, F. J., and Forknall, A. J. March 11, 1924. Pulleys. - Runners or bobbins for use in winding yarns into hanks or skeins and in unwinding therefrom comprising end discs connected by a distance-piece have the end discs or distancepiece or both formed of thermo-plastic material, that is, an organic material capable of being moulded under heat and pressure, for example the materials known under the registered Trade Marks " Cellastoid " and " Galilith," or any casein, cellulose, phenolic condensation or like material. The end discs a may be corrugated as shown, and the barrel b, which is secured to annular portions of the discs, may be formed from a corrugated strip united at its ends by welding or by means of an adhesive strip b'. The end discs are provided with metal or other bearing bushes, or a tube may be fitted between the discs.
Patent GB-990336-A (GB)
Title: Process and apparatus for the decomposition of ferrous sulphite monohydrate
IPC: C01G49/02
Filed: 1963-02-15
Abstract: <PICT:0990336/C1/1> Ferrous sulphate monohydrate is decomposed to the oxide in a multiple hearth furnace using sulphur as fuel, which is supplied in solid form to a plurality of hearths.  The furnace consists of cylindrical casing 1, with hearths 4, of refractory material; a rotating rabble mechanism 2; and a surrounding of sheet iron 3. Some of the sulphur, e.g. 25%, may be supplied to drying hearth (16) with the ferrous sulphate, which is then conveyed transversely over each hearth by obliquely set rabble blades 9, so that it falls alternately through apertures 5 and 6, and finally out at 17 after cooling on the lower hearths.  The rest of the sulphur is supplied to alternate, upper and middle hearths only, by means of hoppers 14, screw conveyers 15, and pipes 13, which project a short distance over the hearths, and may have flap valves to prevent gases escaping.  Pipes such as 13 may also supply sulphur through the walls above apertures 6, where it mixes with the falling material. Gases from roasting (containing SO2) are drawn off at 11 to extract chamber 10, and may be conveyed to a sulphuric acid plant.  These gases may be heated, e.g. from 650 DEG  to 850 DEG  C., and used to generate steam in a waste-heat boiler.
Patent GB-1209734-A (GB)
Title: A method and device for providing a time delay in the reproduction of information stored on a circulating recording medium
IPC: G11B20/22
Filed: 1969-02-05
Abstract: 1,209,734. Automatic control of time delay. COMMISSARIAT A L'ENERGIE ATOMIQUE. Feb. 5, 1969 [Feb. 14, 1968], No. 6274/69. Heading G3R. A travelling recording medium forms a loop between recording and reproducing points and the time of travel of a recorded signal between the points is compared with a desired time, any error being effective to correct the time by automatically controlling the length of the loop. In Fig.2, a unit 38 periodically starts a counter 44 supplied with pulses from a generator 50 and simultaneously applies a pulse, which may be coded, to the recording head of a magnetic recorder the tape 14 of which forms a loop round a pulley (not shown) the position of which is adjustable, to vary the length of the loop, by a lead screw driven by a reversible motor 34. The time at which the recorded signal reaches a reproducing head 18 is compared with the time at which counter 44 achieves a count corresponding to a manually or automatically selected time interval. Signals corresponding to the sense and magnitude of any error are developed by comparators 56 and 58 respectively and applied to a non-linear control unit 68 which, if the error exceeds a predetermined value as detected at 74, causes motor 34 to run in the appropriate direction for a time, and/or at a speed, corresponding to the magnitude of the error, according to which section 70 or 78 of control unit 68 is selected for use. After each adjustment of motor 34, unit 38 and the counters are reset through the circuits shown dotted before the next adjustment. Switches (not shown), operated at the limits of adjustment of motor 34, alter the speed at which the tape is transported by a capstan (not shown) so that the delay is brought within a range in which it can be successfully corrected by motor 34. The recording and reproducing heads may be multiple heads associated with three tracks, the first for the above mentioned control signals, the second for information to be recorded, and the third for phase-shifted re-recording from the second track after delay by the loop.
Patent GB-1427891-A (GB)
Title: Sample and hold circuit
IPC: H03K17/60
Filed: 1973-04-04
Abstract: 1427891 Semi-conductor sample and hold circuits RCA CORPORATION 4 April 1973 [10 April 1972] 06316/74 Divided out of 1419319 Heading H3T The description is identical with that of parent Specification 1,419,319 and the claims relate to the sample and hold circuit. There are two similar alternately operative sample and hold circuits 46, 47 receiving through T45 the output of a phase detector 31. The first consists of an emitter-coupled pair 52, 53, of which T53 is enabled by a pulse A so that T49 can conduct. A capacitor 51 is then charged by T49 to a level dependent upon that across R42, which is the detector output, or else it is discharged through T53 such that its net voltage follows any changes occurring in the R42 voltage during the pulse A period. When T53 is off, T52 conducts and holds T49 off so that C51 has neither charge nor discharge paths. In the other sample and hold circuit 47, the pulse A is supplied to the opposite transistor 62 to ensure the alternate operation.
Patent GB-924194-A (GB)
Title: Snap-out gang channel fastening
IPC: F16B37/04
Filed: 1961-02-22
Abstract: 924,194. Bolting. KAYNAR MFG. CO. Inc. Feb. 22, 1961 [Oct. 12, 1960], No. 6446/61. Class 89 (1). A fastener assembly comprises a plurality of fastener elements 16 retained in a resilient channel member 10 by lugs 46 on the elements 16 snapped into slots 42 in the flanges of the channel, the elements having an integral base flange 44 with wings 24 extending laterally to limitlateral movement of the element in the channel, and the lugs being integral with the wings. In Figs. 1 and 3, the elements 16 are dome-shaped housings for nuts 23 retained in the housings by a ring 50 and a sealing ring 41. The flange 44 is located in an opening 30 in the channel, with the wings 24 resting on the upper surface of the channel web 12. The lugs 46 extend upwardly and outwardly into the slots, from which they may be released, as by a screw-driver levered between the enlarged base 22 of the element 16 and the side of the channel. In Figs. 5 and 7, the wings 24 and lugs 46a, 46b are formed on the nuts 23a, 23b. Rivet holes 38 are formed in the channel-web.
Patent GB-1157475-A (GB)
Title: Improvements in or relating to the Manufacture of a Metal Structure on a Carrier Surface by Etching.
IPC: C23C14/04
Filed: 1967-02-10
Abstract: 1,157,475. Etching. SIEMENS A.G. 10 Feb., 1967 [11 Feb., 1966], No. 6453/67. Heading B6J. A layer of aluminium, containing a minor amount of at least one further metal which will produce local action with aluminium and, e.g. gold or silver, is deposited on a carrier surface, e.g. a surface of a semi-conductor monocrystal such as of silicon, the layer is covered with an etch-resistant photosensitive varnish, the varnish is exposed and developed to uncover portions of the metal layer not required to form part of a desired pattern and the exposed metal is etched away, e.g. with an alkaline etching solution such as potassium carbonate. The metal layer may be deposited by vapour deposition from a strip of aluminium having an electrolytic coating of the further metal(s).
Patent GB-115485-A (GB)
Title: Improvements in or relating to Electromagnetically Operated Brake Mechanism for Cranes or the like.
IPC: B66D5/00
Filed: 1917-05-09
Abstract: 115,485. Ransomes & Rapier, and Lewis, R. S. May 9, 1917. Electric and magnetic; compensating for wear. - Relates to brakes, particularly for cranes, which are applied by a spring and released by a solenoid or electro-magnet. To maintain the stroke of the solenoid plunge constant irrespective of wear of the brake linings or other parts the plunger actuates the mechanism through a slutch which is disengaged when the plunger reaches a predetermined initial position or when the solenoid is de-energized. The pole-piece of the solenoid may be adjusted instead. According to Fig. 2, the plunger C<2> is bored to receive the rod D<1> to which it is adapted to be coupled by a clutch comprising balls F<2> disposed between a conical part C<3> formed in the plunger and a number of segments F<1> with tapered recesses F<3>. A spring K tends to keep the clutch in engagement. It is disengaged when the plunger reaches the limit of its stroke in the application of the brakes by the abutment of the members F<1> against the fixed plate G<1>, the rod D<1> being then withdrawn from the plunger with the further movement of the mechanism as wear occurs. The space J above the plunger may be closed except for an orifice A<6> to give a dash-pot action and the lower parts G<1>, G<2> may be replaced by a cap to provide a lower dash-pot. A simple ring clutch may be used. Fig. 5 illustrates the use of an electromagnetic clutch. The plunger part C<5> screws loosely into the part D<2> and rests upon a spring stop N. When the solenoid is energized to release the brake the parts C<5> and D<2> become rigid. ly clutched together and the stop N is depressed. When the solenoid is de-energized and wear of the blocks has occurred the part C<5> is temporarily lifted from the stop N and then screws out of the part D<2> until it again rests upon the stop. The pole-piece A<9> may instead screw loosely into the upper part of the casing A<8> and the plunger pass through the lower part so that when the solenoid is de-energized the pole-piece will be free to follow up the movement of the plunger as wear occurs. According to the Provisional Specification the plunger may be divided transversely, the attraction of the parts when the solenoid is energized effecting engagement with the central rod through a cone clutch.
Patent GB-541109-A (GB)
Title: Improvements in collapsible gates and doors
IPC: E06B3/48
Filed: 1940-04-12
Abstract: 541,109. Collapsable gates. SNARE, E., and CASTON & CO., Ltd. April 12, 1940, No. 6681. [Class 45] [Also in Group X] The series of sliding pickets 1, 6 suspended by rollers from a track. each have hinges 15, Fig.. 2, carrying leaves 16 or plates which extend at an incline and are themselves hinged together intermediate the pickets by butt hinges 17, one edge of each pair of leaves being bent to present, with the gate extended, a flat surface 19 where it is connected with the hinge flap 18 which surfaces and also the' surfaces of the pickets may be decorated as by applying stainless steel or enamel. The terminal or front style 6, Fig. 3, is provided with two grooved supporting rollers 3, 8 running on the curved upper surface of the track bar 4, and a roller 9 below the track bar and between the rollers 3, 8 is mounted in a pivoted bracket 10 and can be adjusted as by a set-screw 14, or by eccentric mounting. Lazy tongs are mounted on the pivots of the rollers 3 and may also be applied at other parts 20, Fig. 2, of the styles of high gates. A screening plate may be applied over the lazy tongs.
Patent GB-137183-A (GB)
Title: Improvements in and relating to means for preventing doubles in spinning frames
IPC: D01H13/04
Filed: 1919-03-18
Abstract: 137,183. Mitchell, F., and Mitchell, W. G. H. March 18, 1919. Doubles, preventing; sight-plates for threads.-A plate 5, serving a number of ends and preferably coloured so as to render the ends visible by contrast, is hinged to the upper side of the threadboard close to the yarn, so that if an end breaks, it will fall behind the plate clear of adjacent ends. The hinge is provided with a spring, and the plate is maintained in position by stops 9.
Patent GB-679089-A (GB)
Title: Improvements in or relating to protective knee pads for miners and other workmen
IPC: A41D13/06
Filed: 1951-03-21
Abstract: 679,089. Knee protectors. CRAFTS, F. W. March 21, 1951, No. 6757/51. Class 81 (ii). A knee pad comprises an outer encasement 1 and a separate lining of soft pliable material 5, both encasement 1 and lining 5 being provided with means e.g. straps 8, 12 by which they may be independently fastened on the leg. The top and sides of the encasement 1 are provided with a fixed lining 2, a space 3 being left to receive the separate lining which may be attached to the encasement 1 by means of a hook 11. The encasement 1 may be of leather and the linings 2 may be of spongy rubber.
Patent GB-770073-A (GB)
Title: Improvements in or relating to ethers of alkylphenoxy-polyethoxyethanols and the preparation thereof
Filed: 1955-03-08
Abstract: The invention comprises compounds of formula <FORM:0770073/IV(b)/1> wherein R is an alkyl group of 8-15 carbon atoms, R1 is a methyl, benzyl or allyl group, and n is an integer from 8 to 20 when R1 is a methyl or allyl group and from 12 to 40 when R1 is a benzyl group. The compounds are prepared by reacting methyl, allyl or benzyl chloride or bromide with an alcohol of formula <FORM:0770073/IV(b)/2> wherein R and n are as defined above, in the presence of a strongly basic inorganic neutralizing agent.  Specified neutralizing agents are sodium, potassium, sodium or potassium or lithium hydroxides, sodium or potassium methoxide, sodium ethoxide, sodium carbonate and barium or calcium or strontium hydroxides.  They are preferably used in slight excess.  The benzylation reaction is preferably carried out between 50 DEG  and 200 DEG  C. and the methylation and allylation reactions between 50 DEG  and 150 DEG  C.  The reaction may be conducted in the presence of solvents such as benzene, xylene or toluene.  At the end of the reaction, the reaction mixture is washed with water and unreacted methyl, allyl or benzyl chloride or bromide and any methyl, allyl or benzyl alcohol formed are preferably removed by vacuum steam distillation.  The compounds are non-ionic and surface active and may be used in detergent compositions (see Group III).  In examples, alkylphenoxypolyethoxyethanols of formula II (only the values of R and n are specified below) are reacted with a corresponding halide: the compounds wherein R is octyl and n = 15 or R is octyl, dodecyl or pentadecyl and n = 12 or R is nonyl and n = 30 are reacted with benzyl chloride or bromide; the compounds wherein R is octyl, nonyl decyl and n = 17 or R is octyl or tetradecyl and n = 20 or R is octyl and n = 16 or 40 or R is nonyl and n = 15 are reacted with benzyl chloride; and the compounds wherein R is octyl and n = 8, 10, 12 or 20 or R is nonyl, dodecyl or pentadecyl and n = 8 or R is nonyl, decyl, undecyl or pentadecyl and n = 20 are reacted with allyl or methyl chloride or bromide.ALSO:As components of detergent compositions, use is made of compounds of the formula <FORM:0770073/III/1> wherein R is an alkyl group of 18-15 carbon atoms, R1 is a methyl, benzyl or allyl group, and n is an integer from 8 to 20 when R1 is a methyl or allyl group and from 12 to 40 when R1 is a benzyl group (see Group IV(b)).  Other specified constituents of the compositions are sodium tripolyphosphate, sodium silicate and sodium sulphate.
Patent GB-410297-A (GB)
Title: Improvements in and relating to power installations
IPC: B63H21/14
Filed: 1933-03-07
Abstract: 410,297. Gas-producers. GREGSON, W., 32, Farringdon Street, London. March 7,1933, No. 6858. [Class 55 (i).] A power installation comprises a gas producer supplying fuel to a prime mover the waste gases from which pass to a boiler which generates steam that is employed in an evaporator to generate low pressure steam for steaming the gas producer. In a ship installation, coal is fed from bunkers 1 to producers 2 which with their blowers 2<a> are adjacent the bunkers. The gas is passed through coolers and washers 3, 4 utilizing sea water, duplicate sets being provided so that one may be closed down for removal of deposits. The gas is used in an engine 5 driving a propeller 6 and the exhaust is led to a waste heat boiler 7 disposed beside or above the engine. The steam so produced is passed to one of two evaporators 8 and the resulting low-pressure steam fed to the gas producer. An auxiliary donkey boiler 13 may be used for starting the producer.
Patent GB-1067127-A (GB)
Title: Self-lapping valves
IPC: B60T15/04
Filed: 1966-02-17
Abstract: 1,067,127. Valves. WESTINGHOUSE BREMSENUND APPARATEBAU G.m.b.H. Feb. 17, 1966 [April 3. 1965], No. 6987/66. Heading F2V. With the parts in the position shown an inlet valve 8, 10 is closed and an exhaust valve 5, 11 is open so that an outlet chamber 13 and the port 14 leading therefrom are vented to atmosphere via the exhaust valve 5, 11, an exhaust passage 15, and a one-way valve 16. Upon depressing a foot pedal 18, a member 22 is lowered by a spring 21 and forces down a tube 2, within which is the passage 15, a shoulder on the tube 2 depressing a piston 4 against a spring 6 until the closure-member part 5 abuts its seat 11 on a tube 7, the lower portion of which embodies the closure-member part 8; continued movement of the pedal removes the latter from its seat 10 against the action of a spring 9 so opening the chamber 13 to an inlet port 17. The pressure in chamber 13 urges the piston 4 upwards to compress the spring 21 and both valves assume the " lapped " position unless the pedal is depressed so far that the inlet valve is prevented from closing. The tube 7 has a greater effective area than the piston 4 so that both valves have large diameters relative to that of the piston.
Patent GB-972820-A (GB)
Title: Semiconductor devices
IPC: H01L21/00
Filed: 1962-02-22
Abstract: 972,820. Semi-conductor devices. RADIO CORPORATION OF AMERICA. Feb. 22, 1962 [March 17, 1961], No. 7010/62. Heading H1K. A semi-conductor body 10 with a PN junction formed by an impurity layer 13 and having an electrode pellet 16 ohmically connected to the impurity layer is shaped by removing material from the body except for material underneath the electrode pellet. The body may be of Ge, Si, InP, or GaAs, but is preferably Ge with sufficient Ga to give 8 x 10<SP>19</SP> to 5 x 10<SP>20</SP> charge carriers/cm.<SP>3</SP> The impurity layer may be diffused into the surface of a larger body from which body 10 is cut or may be produced by flooding the surface with a melt of 50 gm. of lead-tin alloy containing 2 gm. germanium arsenide. The electrode pellet 16 may be of gold, lead or tin or lead-tin alloy and is preferably lead with the donor antimony. The body is mounted in an insulating ring 18 between nickel-iron-cobalt gold plated plates 15 and 19. Plate 19 has a prong 17 cut out of its centre which is cranked over to make contact with the electrode 16. Shaping may be done by etching chemically but electrolytic etching is preferably employed. The invention is employed in the production of tunnel diodes having a selected peak current. To monitor the peak current of the diode a curve tracer 78 is used while the diode is being etched in KOH. A two-pole switch 73 enables etching to be conducted a step at a time and the characteristic to be examined after each step. It is stated that an automatic control unit 79 may control the etching process in a system of mass production. After etching the diode is washed, dried and encapsulated.
Patent GB-199087-A (GB)
Title: An anti-vibration device for lamps
IPC: H01R33/975
Filed: 1922-03-10
Abstract: 199,087. Cable Accessories Co., Ltd., Reeves, F. H., and Davis, P. W. March 10, 1922. Anti-vibration devices.- An anti-vibration support for lamps comprises two elements a, b, one adapted to be screwed to a fixed support and the other to a lamp or lamp-holder c, each element having a plurality of depending limbs a<1>, b<1>, the limbs of one element being disposed intermediatelv of, and connected by springs d to the limbs of the other element. The element b is secured to the lamp-holder by screws passing through a flange c<1> formed on the latter member. In a modification, the limbs a', b<1> are extended and connected at different levels by two or more series of springs and the attaching screws for the member bare disposed internally of the lamp-holder.
Patent GB-1142265-A (GB)
Title: Improvements relating to sealing rings
Inventor: REID-SMITH DONALD ALEXANDER JA
IPC: F16J15/16
Filed: 1967-02-14
Abstract: 1,142,265. Piston and shaft seals. TRIST MOULDING & SEALS Ltd. 4 Jan., 1968 [14 Feb., 1967], No. 7056/67. Headings F2B and F2T. A piston or shaft sealing ring comprises a rubber ring 1 having on an axially extending face 4 a series of annular ridges 8 forming sealing lips and a backing ring 2 of firmer material attached to a radially extending face of the ring 1 and having an edge 3 which forms part of the face 4 having the ridges 8. The ring 1 is of V-section and the ring 2, which is of fibrous material impregnated with rubber, engages a recess in the ring 1 and may be interlocked but is preferably bonded thereto. As shown in Fig. 2 for a piston seal the ridges 8 are on the outer peripheral face 4. In a modification, Fig. 3 (not shown), the ring (2) extends across the whole of the base of the ring (1). When used as a shaft seal the ridges (8) are in the inner peripheral face (12) or the ridges may be on both inner and outer peripheral faces so that the ring may be used as a shaft seal or a piston seal.