baber/WOPTO huggingface dataset:
Patent GB-574161-A (GB)
Title: Improvements in or relating to cylinder cooling structure for aircraft engines
IPC: F02F1/06
Filed: 1944-07-05
Abstract: 574,161. Cooling cylinders. UNITED AIRCRAFT CORPORATION. July 5, 1944, No. 12841. Convention date, Aug. 28, 1943. [Class 7 (ii)] A cooling arrangement for internal-combustion engine cylinders consists of fins 14, thermally united to a cylinder barrel 10, enclosed by cowl or jacket members 11 providing intake and outlet openings 12, 13 for the inter-fin spaces in such a manner that the free space between the fins adjacent the intake opening is greater than adjacent the outlet; as shown in Fig. 1, the fins 14 are not of uniform radial length over the entire circumference of the cylinder. From the jackets 11 fins 15 project into the spaces between the fins 14 and may make contact with the cylinder or be thermally united thereto. Figs. 3 and 4 indicate the manner in which the free spaces decrease in size around the cylinder from the inlet 12 to the outlet 13. The cooling effect on the upstream and downstream sides of the cylinder is equalized by increasing the amount of metal in contact with the cooling air on the downstream side. Other modifications are shown in which the cylinder cooling fins are of uniform radial length with built-up cowl members disposed between adjacent fins at variable distances along their length so' that portions of the fins extend radially beyond the cowl members and supplemental cowl members surround and enclose the extended portions of the fins. In another Figure, an arrangement is shown with the cylinder cooling fins of uniform radial length, but with the fins attached to the cowl members increasing in length from the inlet to outlet openings. The final arrangement shown has only one set of fins, surrounded by the usual cowl members, which increase in thickness from the inlet to the outlet side.
Patent GB-1084542-A (GB)
Title: Magnets with high-homogeneity working gap
Inventor: PARKER LESLIE KEARTON
IPC: H01F7/20
Filed: 1963-04-01
Abstract: 1,084,542. Permanent magnets. PERKINELMER Ltd. March 25, 1964 [April 1, 1963], No. 12846/63. Heading H1P. In a magnet, e.g. permanent for providing a highly homogeneous flux distribution in a working gap, the gap is defined by opposed faces of two high-permeability inserts 4 each embedded in a polepiece 2 and so supportedly spaced therein as to define a single intervening high reluctance series gap which includes an inner portion 5 substantially normal to the magnetic axis through the working gap and an outer portion 6 extending at an angle from the inner portion 5 between the outer boundary of the insert 4 and an annular part 3 of the polepiece, the two series gap portions being of different width. The insert support is effected by a non magnetic, e.g. epoxy resin, layer, and the annular part 3 is a screw ring which is adjustable to alter the spacing between the two such rings and, in the embodiment shown, the width of the gap outer portion 6.
Patent GB-528268-A (GB)
Title: Improvements in or relating to the treatment of lignin and the products resulting therefrom
IPC: C08H5/00
Filed: 1939-05-02
Abstract: 528,268. Treating lignin. SHERRARD, E. C., and HARRIS, E. E. May 2, 1939, No. 13085. Convention date, May, 10, 1938. [Class 95] [Also in Group IV] Lignin is hydrogenated under heat and pressure in the presence of a hydrogenation catalyst to give a graduated series of products which when using copper chromium oxide as a catalyst were separated by fractional distillation. The fraction boiling above 150‹C. at 1 mm. solidifies into a hard vitreous mass. When nickel is used as the catalyst, a similar product is obtained except that it flows more readily and forms a quick flowing thermoplastic composition. If desired the lignin may be prepurified by removing sugars, inorganic materials and impurities. Two examples are given using copper chromium oxide and Raney nickel catalysts.
Patent GB-131271-A (GB)
IPC: F01B3/02
Abstract: 131,271. Pelterie, R. Esnault-. Aug. 13, 1918, [Convention date]. Cam-actuated pumps; multiple-acting piston pumps; balancing parts; relief devices; valves, arrangement of.-A pump comprises a number of barrels and pistons l, l<1> arranged symmetrically around and parallel to the longitudinal axis, the pistons being actuated by a rotating shaft a carrying an inclined plate b, which oscillates, through balls d, d<1>, a cap c provided with conical or curved bearings for balls m in contact with the pistons. The cap e is prevented from rotating by a conical pinion h on the cap engaging a fixed pinion i on the pump body. The moving masses are balanced by a weight o on the plate b. Each piston serves as valve to another piston. The liquid enters by an axial pipe p and channels q<1>, s, v<1> and leaves by the channels v<1>, s and peripheral channel t. Each barrel has a safety valve t . The pump may be used as a motor by introducing pressure liquid through the pipe p. When applied to aeroplanes, the joints of the high and low pressure pipes may be arranged so that they serve for fixing the pump to the wings by using the pipes as uprights of the framework or as struts for the wings. Specification 107,760, [Class 122 (i), Engine and like cylinders &c.], is referred to.
Patent GB-878003-A (GB)
Title: Improvements in the production of pure 1,4,5,6,7,7-hexachlorobicyclo-[2,2,1]-heptene-(5) dicarboxylic acid-(2,3)
Inventor: FRIEDRICHSEN WILHELM
Filed: 1960-04-13
Abstract: Pure chlorendic acid [1,4,5,6,7,7-hexachlorobicyclo-[2,2,1]-heptene - (5) - dicarboxylic acid-(2,3)] is prepared by reacting hexachlorocyclo pentadiene and maleic anhydride in a solvent at 120-200 DEG C., hydrolysing the chlorendic acid anhydride, and treating the resulting chlorendic acid with an aqueous solution of an aliphatic carboxylic acid containing up to 6 carbon atoms, preferably at a temperature between room temperature and 40 DEG C.  Specified acids are formic, acetic, propionic, butyric, isobutyric, valeric, isovaleric and acrylic acids, and acids containing inert substituents, e.g. halogen atoms or alkoxy groups, such as chloracetic acid, dichloracetic acid, and lactic acid methyl ether. The preferred acid concentration is 2-15% by weight, and generally the acid solution is used in amounts of half to twice the weight of chlorendic acid.  The treatment may be in a heterogeneous system, by moistening or suspending the chlorendic acid with or in the aqueous acid solution and filtering, or in a homogeneous system, the amount of aqueous acid and its temperature being such that the chlorendic acid passes completely into solution and crystallises out on cooling. The purification step may be combined with the hydrolysis step by carrying out the hydrolysis with the aqueous carboxylic acid solution. Specifications 614,931 and 855,586 are referred to.
Patent GB-1348521-A (GB)
Title: Methods of making semiconductor components
IPC: H01L23/488
Filed: 1971-05-05
Abstract: 1348521 Electric couplings ROBERT BOSCH GmbH 5 May 1971 [9 May 1970] 13157/71 Addition to 1181198 Heading H2E [Also in Division H1] In assembling a contact arrangement for a semi-conductor device of the type described in Specification 1,181,198 the coil section 11 of the contact wire 10 is jammed down over the terminal post 3 which extends in insulated manner through the metal base 1, thereby causing the end section 13 of the wire 10 to exert a force on the semi-conductor body 5 to hold it in place during the subsequent soldering process which secures the coil section 11 to the post 3, the end section 13 to a solder electrode 7<SP>1</SP> and the body 5 to the metal base 1. The end section 13 of the wire 10 is angled relative to the centre section 12 so as to take up the vertical position shown only after the coil section 11 has been pushed down over the post 3. The invention is applicable to transistors or diodes. The wire 10 may be of Ag/Cu or Ni/Mn, the solder parts may comprise a Pb/Sn solder preferably applied, in the case of the layer 6<SP>1</SP>, 7<SP>1</SP>, over layers of Ni of the body 5, and the metal base 1 may be of steel. A housing may be applied to the base 1.
Patent GB-552459-A (GB)
Title: Velocity modulated tube with removable resonators
IPC: H01J25/12
Filed: 1941-10-14
Abstract: 552,459. Electron-oscillators. STANDARD TELEPHONES & CABLES, Ltd. Oct. 14, 1941, No. 13248. Convention date, Oct. 15, 1940. [Class 39 (i)] Electron discharge devices of the velocity modulation type, comprise closed resonant chambers removably arranged outside the envelope and coupled to the velocity modulating and energy extracting electrodes inside the envelope. As shown in Fig. 1, the envelope consists of metal sections 11, 12, 13 connected together by seals 14, 15, and carrying annular discs 21, 22, 23, 24. The source 10 of the electron stream is carried by the seal 16, and the collecting electrode 27 is sealed through or formed by the opposite end of the envelope. The resonant chambers 25, 26 are made with the resilient inner tubular portions which grip the envelope sections and provide good electrical connection with the discs. Alternatively the envelope may be made of glass, and the discs formed with tubular extensions inside the envelope. In this case, the resonant chambers fit over the glass envelope and are capacitatively coupled with the discs. The device is adapted for operating at different frequencies by substituting different resonators, or, alternatively, the resonators may be made in telescoping sections which may be adjusted to provide the desired operating frequency. A focusing coil is disposed around the envelope.
Patent GB-667398-A (GB)
Title: Improvements in or relating to steam generating and superheating installations
IPC: F22G5/16
Filed: 1949-05-18
Abstract: 667.398. Steam desuperheaters. SUPERHEATER CO.. Ltd.. SOUTHCOTT L. C., and RUDORFF, D. W. A. F. May 17, 1950 [May 18, 1949], No. 13252/49. Class 123(iii) In a multi-circuit steam boiler having, for example, a high temperature circuit 5 and a low temperature circuit 6 including a common steam-and-water drum 1 divided by a baffle or weir plate 2 into two sections 3, 4 associated with the two circuits respectively, cooling water is supplied to a desuperheater 9 by a pipe 14 from the boiler feedwater supply pipe 15, preferably after passage through an economizer, or by a pipe 12 from the drum section 3, where the water has a low'percentage of concentrates, and is discharged by a pipe 13 into the drum section 4 where the water is of higher concentration. The desuperheater is disposed in the installation at a lower level than the drum 1 and the water in the drum section 3 is maintained at a level higher than that of the water in the section 4 so as to ensure circulation of water therethrough during both on-load and off-load periods of the boiler.
Patent GB-1517896-A (GB)
Title: Vacuum switches
IPC: H01H33/664
Filed: 1977-03-29
Abstract: 1517896 Vacuum switch contacts SIEMENS AG 29 March 1977 [30 March 1976] 13264/77 Heading H1N Vacuum switch contacts each comprise an annular contact surface 12, 18 and a hollow intermediate portion 14 formed as a solid of revolution whose internal cross-section diminishes smoothly along its axis from the contact annulus to a terminal portion 8, the intermediate portion having oblique slits 16 to encourage arc rotation. The internal surface at the terminal may be coated with low vapour pressure material such as molybdenum or tungsten.
Patent GB-636134-A (GB)
Title: Machine for surface-finishing road paving
IPC: E01C19/42
Filed: 1947-05-16
Abstract: 636,134. Road-surfacing machines. DEHN; S. G. (Jaeger Machine Co.). May 16, 1947, No. 13302. [Class 107] A machine for smoothing freshly laid road surfacing material comprises a self-propelled wheeled carriage 10 supporting at the front a screed 15 mounted so that it is at right angles to the direction of travel of the machine. Towards the rear, a further screed 25 is positioned at an acute angle to the front screed. The screed 25 is turned about the axis of a vertical shaft 37 by means of rams 50 acting on a frame 43 which is supported by the shaft 37 and arcuate guide rails 47, the frame 43 being loosely connected to and abutting against the screed 25, Both screeds have imparted to them a horizontal reciprocating motion and are raised clear of the road by jacks acting on systems of bell-crank levers and connecting rods.
Patent GB-1200311-A (GB)
Title: A manual aid to selective plucking of tea
Inventor: BARBORA DHIRENDRA NATH
IPC: A01D46/04
Filed: 1967-03-22
Abstract: 1,200,311. Tea-plucking device. TEA RESEARCH ASSOCIATION. 7 Nov., 1967 [22 March, 1967], No. 13349/67. Heading A1F. A device for selective plucking of teashoots manually comprises a nipping blade 3 having a plurality of notches 3A each flanked by a selector 1 projecting beyond and above the blade and provided with a shoot divider 2. The plucked shoots are collected in a container 6. Plucking is done by twisting the device by its handle 4 (Figs. I-IV not shown) or by a shoot bender 7 comprising bars 7A, 7B rotated by a crank handle 8 to direct the shoots towards the blade-edge. The device is provided with an arm-rest 10, a handle 4, arms 4A, 4B, and an extension piece 10. The bars 7A, 7B may be replaced by helical bars.
Patent GB-134741-A (GB)
IPC: F23D14/48
Abstract: 134,741. Fletcher, Russell, & Co., Russell, W., and Fairhurst, T. March 15, 1919. Atmospheric g a s burners.-In an atmospheric gas burner, a. needle valve is clamped in position between a shouldered member and a part of the fitting to which the member is attached. The valve b is formed with wings b<3> and is clamped concentrically with the bore of the casing c<1> by a screwed sleeve d formed with an internal shoulder d<1>. The nipple a is screwed on the sleeve d to control the ares of the orifice a<1>, and a disk e is screwed on the nipple to control the air supply to the mixing- tube.
Patent GB-136177-A (GB)
IPC: B65G27/14
Abstract: 136,177. Eickhoff Maschinenfabrik Geb. Aug. 20, 1918, [Convention date]. Compressed-air engines.-In a directacting compressed-air engine for jigging conveyers in which compressed air is admitted before the end of the return stroke to cushion the piston, a device for adjusting the time of admission also adjusts the time of cut-off. In the form shown, a valve c controls the admission and exhaust of compressed air to and from a cylinder port o, and is actuated by tappets m, n on the piston-rod c, the tappets acting on rollers h, i on a rod g connected by a lever f to the valve. The tappets are adjusted on the piston-rod by means of a screw k and an adjusting-handle l, the tappet n being mounted on a thread of steeper pitch than the tappet m. The piston-rod is connected by a cross-head d to the conveyer, the runway of which has inclined or curved roller paths, so that the return stroke of the piston is performed by gravity. Towards the end of this stroke, the upper face of the tappet m lifts the roller h, and the valve c opens the port o to admit air for cushioning the piston. On the working stroke, the lower face of the tappet m acts on the roller i, first to continue the admission of air, and then to close the port for expansion. Towards the end of the stroke, the tappet n acting on the roller i opens the port for exhaust. Specification 19696/12 is referred to.
Patent GB-700934-A (GB)
Title: Separators for electric storage batteries and methods of preparing the same
IPC: H01M50/434
Filed: 1951-06-08
Abstract: 700,934. Batteries. FLEXA INDUSTRIA MATERIE PLASTICHE SOC. PER AZIONI. June 8, 1951 [June 13, 1950], No. 13645/50. Class 53 A separator for a storage battery is made by mixing bentonite, silica gel or other colloidal substance with water and allowing it to stand till the colloid becomes swollen, mixing it in this condition with a plastic binder for example a solution or dispersion of polyvinyl chloride or phenol formaldehyde resin, spreading the mixture on a fibrous carrier and drying and moulding to shape. The carrier may comprise a web of carded glass wool, asbestos, synthetic resin or other woven material, and the final product may be ribbed, corrugated or otherwise formed with projections.
Patent GB-1515475-A (GB)
Title: Air flow control systems
IPC: F24F11/76
Filed: 1976-04-05
Abstract: 1515475 Fluid-pressure servomotor systems WATERLOO GRILLE CO Ltd 9 Feb 1977 [5 April 1976 7 July 1976] 13653/76 and 28217/76 Heading G3P The rate of air-flow in an air conditioning system is regulated by means including a fluid logic element and supplied through a dead weight regulator 12 by air from within the system. The system also supplies air to a valve 30 controlling a bellows 6 connected to a system damper, the valve in turn being controlled by the fluid logic element 14 in response to a rate of air-flow signal 10 and to room and air temperature signals 4, 20.
Patent GB-220723-A (GB)
Title: Improvements in sound boxes for phonographs or the like
IPC: H04R7/04
Filed: 1923-05-24
Abstract: 220,723. Monge, Vicomte Gerard de. May 24, 1923. Sound-box cases.-Soundboxes are so constructed that the ratio of the distance r between the lateral wall of the sound-box and the edge of the orifice in the rear wall leading to the amplifier to the distance a between the inner face of the rear wall and the diaphragm lies between 2 to 1 and 5 to 1, the throat between the sound-box and the amplifier being made conical as shown for connection to a tone-arm of normal size.
Patent GB-138097-A (GB)
Abstract: 138,097. Aktiebolaget Original-Odhner. Jan. 20, 1919, [Convention date]. Multiplying and dividing apparatus.-Comprises locking-devices for the crankhandles of machines such as those of the pin-wheel and cam-disk variety with laterally - movable totalizing- counter, locking and unlocking being effected by a radial movement of the handle. In the form shown in Figs. 1 and 2, the spindle 6 of the handle 7 passes through a slot 4 in the end of the crank-arm, which is also provided with a socket which receives a bolt 8 extending laterally from the spindle 6. A spring 5 surrounds this bolt bearing between a collar 9 on the bolt and a fixed collar 11 in the socket and holds the handle so that the spindle 6 lies on a notch 13 in a segment 14 in the frame. To rotate the handle, the latter is moved downwards first to release it from the notch. The curved sides 15 of the segment assist in finding the notch. In the modification shown in Fig. 3, the bolt 8 passes through a boss in the crank-arm and is bent at its upper end 17 to lie partly in the boss of the crank and partly in a cut-away portion of the frame. When pulled down, this bent portion rides, during rotation of the handle, on the circumference of the boss formed on the frame, and thus the curved part 15, Fig. 2, may be dispensed with.
Patent GB-715993-A (GB)
Title: Improvements in or relating to electrolytic zinc plating
IPC: C25D3/24
Filed: 1952-05-30
Abstract: 715,993. Electrodeposition of zinc. PHILIPS ELECTRICAL INDUSTRIES, Ltd. May 30, 1952, [June 5, 195<SP>1</SP>.] No. 13826/52- Class 41. A zinc bath contains at least one alkali metal cyanide, alkali metal hydroxide and zinc ions and a quantity of a zinc compound, other than zinc sulphide, which is soluble in the bath only as a result of chemical reaction with bath constituents, the compound being present in excess of such solubility; this zinc compound may be the oxide, hydroxide or carbonate or a mixture thereof. The excess material is suspended in the bath and is replenished as necessary. The excess should not be sufficient to increase the resistance of the bath unduly; an excess of 75 gms. per litre of washed zinc oxide is satisfactory. In an example a solution is prepared containing ZuO 75.6, NaCN 78 and NaOH  31 . 1  gms./lit., and 50 gms./lit. of zinc carbonate is added thereto to form a suspension. In another example the initial solution contains Zn(CN) 2  80, NaCN 75 and NaOH go gms./lit., and 75 gms./lit. Z n O is added. An iron anode may be used. Plating may be carried out in oblique rotating barrels or in perforated horizontal drums.
Patent GB-1005799-A (GB)
Title: Improved variable speed drive control systems
IPC: H02P5/46
Filed: 1964-04-03
Abstract: 1,005,799. Control of A.C. motors. ALLIS-CHALMERS MANUFACTURING CO. April 3, 1964 [April 4, 1963], No. 13848/64. Heading H2J. [Also in Division G3] In a system for controlling the speed of a plurality of shafts 10, e.g. in paper-making machinery, both individually and as a group, each shaft is driven via a variable ratio transmission by a frequency responsive motor 14 supplied from a common variable frequency source 11. The source comprises a three phase generator 17 whose speed is retroactively controlled by comparison of the output of a tachogenerator 28 with a desired speed signal 31 and using the resultant error signal to control either a variable ratio transmission 19 driven by a synchronous motor 18 as shown or, alternatively, the speed of a steam turbine. The speed of each shaft 10 is also retroactively controlled, the setting of each variable transmission 16 being adjusted in response to a comparison, in a device 38, of the output of tachogenerators 35 and a proportion of the group speed signal 39, e.g. taken from the tachogenerator 28. The proportion is determined by a potentiometer, adjustment of which by a mechanical signal 40 is the means for setting the individual shaft speeds. The variable transmissions are preferably eddy current couplings and the motors 14 may be either synchronous, reluctance or induction and are reversible.
Patent GB-936566-A (GB)
Title: Electrolytic marking of metal workpieces
Inventor: ERSKINE SAMUEL
IPC: C25F3/14
Filed: 1962-04-10
Abstract: 936,566. Electrolytic marking apparatus. ROLLS-ROYCE Ltd. April 10, 1962, No. 13894/62. Class 41. An electrolytic marking head for stencilling a metal workpiece comprises a rod electrode 9 which can be placed in electrical contact with the workpiece, a wire gauge electrode 27 separated from the workpiece by a stencil (not shown), and a pad 33 of felt or cotton wool soaked in electrolyte and housed in a casing 26. The stencil is fitted on the casing so as to extend across the gauge 27 and a felt pad may be interposed between the gauge and stencil. The rod electrode 9 is spring-loaded towards the workpiece surface and on placing the head on the workpiece the rod is moved upwardly and through a lever 19 operates a microswitch 18 whereby D.C. is first applied to cause a bright indentation in the surface and then A.C. to produce oxide and so darken the mark. Details are given of circuitry incorporating timing means for adjusting the duration of D.C. and A.C. Alternatively, D.C. or A.C. alone may be used. The casing 26 together with the gauze electrode 27 and stencil are plugged into a body part 5 of the head by a plug 29 and socket 22 connection. This casing unit is interchangeable with others bearing different stencils. A stencil can extend between two storage reels rotatably mounted on the head, the pattern being repeated along the stencil length. When one pattern becomes worn, another can be wound beneath the head.
Patent GB-561149-A (GB)
Title: Improvements in or relating to buildings and slabs and the like for the constructionthereof
IPC: E04B7/02
Filed: 1942-10-03
Abstract: 561,149. Walls. ABRAHAM, R. A. Oct. 3, 1942, No. 13907. [Class 20 (iv)] A wall is built of slabs 11 linked together concertina-fashion by pins 14 and secured to a foundation 10 by rods 18 enclosed at the joints between the slabs by concrete 20 and keyed to plugs 19-in the foundation.