baber/WOPTO huggingface dataset:
Patent GB-701617-A (GB)
Title: Method and apparatus for air conditioning rooms and like spaces
IPC: F24F3/052
Filed: 1951-09-06
Abstract: 701,617. Ventilating. CALDWELL, W. J. Sept. 6, 1951 [Sept. 28, 1950], No. 21105/51. Class A ventilation system comprises the distribution of compressed conditioned air through a pair of ducts of small cross-section at different temperatures and at a velocity of the order of 5,000-12,000 ft. per min., a primary expansion at a point near to a discharge zone to reduce the velocity to about 2,500 ft. per min. and finally the delivery to a point of secondary expansion and discharge to effect by its kinetic energy a high degree of diffusion into the ambient air. A mixture of outside and return air respectively admitted through louvres 10, 16 under the control of thermostat 18 passes through a centrifugal washer 22 to which water is supplied through a cooler 26 and over a heating coil 36 to a blower 44 developing air velocities up to 12,000 ft. per min. in a conduit 46 which divides into parallel ducts 54, 56 one having a heating coil 55 to provide a warm air supply. At points near to discharge nozzles 70 in rooms 64, 66, expander-silencer units 68 are arranged connection being made as through flexible ducts 72, and mixing junctions 74. Air is returned through grilles 76 to the main inlet duct ; pressure within the conditioned area is high enough to prevent infiltration of outside air, any excess pressure being relieved through a relief damper 12. The expander units comprise coaxial perforated cylinders 86, 88 supported in an opening in the air duct with longitudinal layers 90 controlling the inflow. The nozzles 70 may comprise a fixed volute head 102 and a rotatable barrel 104 with an inlet port 106 adjustably registering with the duct inlet. A guide vane 108 and an acoustic core 110 filled with sound absorbent material and carrying an outlet vane 112 are arranged within the barrel. In another arrangement, in which for a small room the expander-silencer for each duct leads to one control nozzle, a single damper motor operates the expanders in opposite sense in dependence on a room thermostat. In a larger room in which varying rates of air change may be required two nozzles being shown, a separate damper motor is linked to each expander, and is influenced both by a room thermostat and a manual switch by which its arc of rotation can be pre-selected.
Patent GB-653708-A (GB)
Title: Improvements in or relating to cylindrical bearing surfaces, particularly cylinder bores, having chromium or other hard-wearing plated surfaces
IPC: F02F1/20
Filed: 1948-08-12
Abstract: 653,708. Cylinders. HEDGECOCK, S., and LAYSTALL ENGINEERING CO., Ltd. Aug. 12, 1948, No. 21299. [Class 7(ii)] [Also in Groups XXII, XXVI and XXXIV] A chromium plated cylinder 3 for an internal combustion engine has helical grooves 2 cut at regular intervals to form a fine network of oil retaining grooves. The grooves may extend over the whole bearing surface or part, e.g. thrust faces 4. The grooves, which are cut after chromium plating, have a depth of approximately twenty-four millionths of an inch.
Patent GB-443684-A (GB)
Title: Improvements in or relating to electric wave amplifying systems
IPC: H03F1/36
Filed: 1935-07-27
Abstract: 443,684. Valve amplifying circuits. STANDARD TELEPHONES & CABLES, Ltd., 63, Aldwych, London.-(Assignees of Black, H. S. ; 6309, Alderton Street, Elmhurst, New York, U.S.A.) July 27, 1935, No. 21377. Convention date, Oct. 6, 1934. [Class 40 (v)] Relates to wave amplifying systems in which, as in the systems described in Specification 374,130, a feed-back circuit is provided for reducing distortion and preventing singing ; and consists in providing capacity in shunt to the feed-back impedances so as to reduce the effect of accidental capacities upon phase shift in the feed-back circuit. The input line, which may carry multiple carrier telephony signals, is coupled by a transformer T<1> to one diagonal of a bridge the arms of which comprise impedances z, kz, zo, kzo, the arm zo being connected across the grid and cathode of the amplifier 1. Feed back from the plate circuit is applied through the circuit f to the other diagonal of the bridge, the relation between the transformer T<1> and the feed-back circuit being conjugate. A similar bridge Z, KZ, Zo, KZo is arranged in the output circuit of the valve, the output transformer T being across one diagonal, and the feed-back circuit f across the other. Each of the impedances in the two bridge circuits includes a shunt capacity which may be constituted by an enclosing shield connected to one terminal of the impedance element. The capacities are designed to prevent singing at a frequency above the working range, by ensuring that the feed-back voltage for such frequencies arrives at the grid in substantially different phase from that of the input voltage. This can be obtained by using an odd number of valves in the amplifier, and by designing the feed-back circuit itself to give zero phase shift. The circuit f may include an attenuation equalizer, as in Specification 371,887, and either or both of the bridge circuits may operate as an equalizer.
Patent GB-504090-A (GB)
Title: Improvements in or relating to rail cars
IPC: F42B3/28
Filed: 1937-09-18
Abstract: 504,090. Railway-vehicle bodies and underframes. BUDD MANUFACTURING CO., E. G. Sept. 18, 1937, No. 21389/38. Convention date, Sept. 19, 1936. Divided out of 502,491. [Classes 103 (iv) and 103 (vi)] The Specification relates to the construction and assembly of the component parts of a railway or like vehicle as described in Specification 502,491. The claims relate to the construction of the underframe and its connection to the side frames. The underframe A, Fig. 3, comprises a series of C-section transverse beams 10 passing through a centre sill which is built up of upper and lower channel section chords 12 united, in the spaces between the beams 10, by a number of short corrugated vertical webs 13. Near its ends the centre sill is welded to needle beams, each of which comprises a transverse member 19, Fig, 1, terminating in flanges 19a, which are welded to the side frames C. The latter frames, Fig. 2, are formed of longitudinals 45, 46, 47, vertical posts 48, and diagonals 49 welded together by means of gussets 50. Initially the longitudinals are made continuous, but, after assembly of the several frames, are cut away at the required points to form doorways &c. At their lower ends the posts 48 are welded to the underframe beams prior to assembling the, longitudinals 47, 47a, and intermediate sheathing 54, Fig. 11.
Patent GB-1345417-A (GB)
Title: Carboxylic containing polymer products
IPC: C08C19/28
Filed: 1971-04-19
Abstract: 1345417 Carboxylated polymers GAYLORD ASSOCIATES 19 April 1971 [24 Feb 1970] 21426/71 Heading C3P Organic carboxyl-containing polymers having pendant groups of formula where n is 0, 1 or 2 and >A-B- is may be prepared by reacting at a temperature above 120 C. a mixture of styrene and maleic. anhydride with a polymer having active hydrogen atoms. Suitable polymers are those having hydrogen attached to a tertiary, benzylic or allylic carbon atom or to a carbon atom adjacent an electron donor group or atom or an electron acceptor group. Specified polymers include polymers of olefins, vinyl aromatics, conjugated dienes, vinyl esters, allyl esters, alkyl vinyl ethers and sulphides, acrolein, itaconic acid and acrylic and methacrylic compounds; polyalkylene oxides, imines and sulphides, polyurethanes, polyesters, polyamides, urea-, melamine- and phenol-formaldehyde resins, silicones and poly bis(chloromethyl)oxetane; cellulose and derivatives thereof, silk, gelatine, keratin, starch, gum arabic and collagen. Modified polymers such as chlorinated and chlorosulphonated polyethylenes may also be used. Preferably a solution of maleic anhydride in styrene at elevated temperature is added to the molten polymer which is mechanically deformed, e.g. in a mixer, mill or extruder, to promote contact. The products may be used in coating and laminating, made into shaped articles which may be dyed, converted to water dispersible salts by reacting with alkali and crosslinked by treating with polyvalent metal compounds. In a preferred embodiment the products may be formed in situ in an extruder in the extrusion of films and fibres. Examples describe the carboxylation of (1) poly n-butyl acrylate, (2) polystyrene and cis-polybutadiene, and (3) polypropylene, polyethylene, ethylene/propylene rubber, polyvinyl chloride, acrylonitrile/butadiene/styrene copolymer and butadiene/acrylonitrile rubber; and the preparation of carboxylated (4) polyethylene films and (5) polypropylene fibres by injecting maleic anhydride and styrene into the polymers in the extruders.
Patent GB-386695-A (GB)
Title: Process for the production of a preparation suitable as a salve base, a skin preparation or the like
Filed: 1931-07-28
Abstract: In a process for the production of a salve base from a mixture of wool fat and whale-shot (spermaceti), a liquid wax e.g. whale-shot oil or bottle-nose whale-oil is employed as a softening agent. Synthetically produced ingredients may replace the naturally occurring ones.  Rump gland fat, skin tallow, beeswax, Chinese insects-wax, psylla wax, palm wax or curcas wax may be used in addition.
Patent GB-891295-A (GB)
Title: Method of and apparatus for hot-dip coating strands
IPC: C23C2/32
Filed: 1959-06-23
Abstract: 891,295. Coating by dipping. UNITED STATES STEEL CORPORATION., June 23, 1959 [June 23, 1958), No. 21544/59. Class 82(2). A method of hot dip coating a continuous metallic strand, particularly steel wire with aluminium, comprises applying shock impulses to the cleaned strand adjacent its point of entry to a bath of molten metal, maintaining the strand under sufficiently low tension to prevent the formation of standing waves, and dampening the vibration before the strand leaves the bath, the coating being permitted to freeze with a smooth surface while the strand passes from the bath in an upward direction. As shown, coil 2 of wire S on reel 4 is fed to alkali tank 6, rinse 8, acid cleaning tank 10, rinse 12, hot rinse 14, drier 16 and under resiliently mounted hold down sheave 18 to impact mechanism V which comprises two parallel discs 52 separated by horizontal bars 54. The discs 52 are rotated at such a rate as to create, by the impact of bars 54 on the strand, at least 40 shock impulses per second, an acceleration between 20 and 5000 g. and innumerable frequencies in the range of 80-10,000 c.p.s. The strand then passes through tube 22 filled with natural gas from inlet 24, through bath 20 of molten coating metal at at least 40 ft per second to give an immersion time of less than 8 seconds, under sinker 26, and up to steady bar 28, to gas wipe 30 and sheave 34 and on to re-coiler 40.
Patent GB-585639-A (GB)
Title: Improvements in or connected with railway rail joints
IPC: E01B11/30
Filed: 1944-11-03
Abstract: 585,639. Rail joints. LEIGH, W. Nov. 3, 1944, No. 21553. [Class 104 (ii)] In a rail joint, the upper surfaces of the fishplates bear on either side of the rail webs and on the undersides of the rail heads, the lower inside portions of the fishplates bearing against the outside edges of the lower rail heads and the undersides of the fishplates bearing on the bases of the two adjacent rail chairs. For supporting bull-head rails, Fig. 3, two kinds of fishplates 1, 18 are shown, both of which may be such that they cause the rail to be held clear of the chair. The fishplates 1, 18 are recessed at 20 to bear against the outside edges of the lower rail heads 21, and have lips 22 which may extend into hollows 23 of the chairs, or may serve to hold keys 16. The fishplate 18 supports the rail head along its whole length, while the fishplate 1 has an upstanding portion 9 near the rail ends which bears against a surface 11 where the rail has been machined off to allow the portion 9 to be brought level with the running surface 10. Fishplates 34, Fig. 7, suitable for flat-bottom rails bear against sloping bases 38 and stops 33 of the rail chairs 29, vertical movement being prevented by spikes 43. The rail head may be machined off to allow the fishplate to be brought level with the running surface 36 as for bull head rails, and in both cases bolts may be provided on the level of line 27, Fig. 3, or line 40, Fig. 7.
Patent GB-574656-A (GB)
Title: Improvements in or relating to the flanging of pipes, conduits and the like of plastic materials
IPC: B29C65/00
Filed: 1943-12-23
Abstract: 574,656. Electric induction heating. HAIM. G., and ZADE, H. P. Dec. 23, 1943, No. 21561. [Class 39 iii)] [Also in Groups XXIII and XXVIII] A pipe of plastic material is united to a flange piece of the same or similar material by the application of a high frequency electric field to the contact surfaces so that they become united. For this purpose electrodes, which may be spring-urged radially, are applied within the pipe and around the flange piece. The end of the pipe may be bevelled internally so that it presents a knife edge at the angle of the flange. A plastic insert may be placed between the pipe and flange piece. The operation may be effected by a hand tool having jaws 31 hinged at 32, carrying semi-annular electrodes 24 embracing the flange piece 20. The inner electrode consists of a split tube enlarged at 28 to fit the bevelled pipe-end referred to above. Specifications 555,054 and 574,657 are referred to.
Patent GB-736513-A (GB)
Title: Improvements in or relating to direct-current amplifiers
Inventor: EARP WILLIAM ADAMS
IPC: H03F3/36
Filed: 1952-08-28
Abstract: 736,513. Valve amplifying circuits. SPERRY GYROSCOPE CO., Ltd. Aug. 14, 1953 [Aug. 28, 1952], No. 21621/52. Class 40 (6). A D.C. amplifier comprises a pentode valve with the input applied either (a) between the signal grid 4 and the earth line, or (b) between the suppressor grid 6 and earth line, or alternatively, (c) between the signal and suppressor grids 4, 6. The output is taken from the screen grid 5, which is provided with a load resistor 10, the no-signal level being adjusted to earth-line potential by means of a potentiometer 9, 8 connecting to a source of negative potential. A cathode-load resistor 13 is provided, The valve is adjusted, either in manufacture or by applying suitable biases to the signal and suppressor grids 4, 6, so that the mutual conductance between the signal and screen grids 4, 5 respectively, is equal and opposite in sign to that between the suppressor and screen grids 6, 5, respectively. Drift due to variations in cathode emission is thereby cancelled out.
Patent GB-614675-A (GB)
Title: Improvements in or relating to signs
IPC: G09F13/06
Filed: 1946-07-19
Abstract: 614,675. Signs. ACME SHOWCARD & SIGN CO., Ltd., and WISBEY, S. July 19, 1946, No. 21662. [Class 3(ii)] In a sign of the kind in which letters &c. 15 formed of transparent or translucent material are situated within correspondingly shaped apertures in a panel 10, the panel is formed of coloured translucent material and has its ends bent backwardly and rearwardly, (as at 11, 12). The panel 10 is backed by a sheet of uncoloured material 13 and, if desired, by a second sheet (not shown) coloured to contrast with the panel 10. The letters may project from the surface of the panel or may be flush with it; they may be colourless or coloured. A lamp box 16 may be bolted to the ends of the panel which are illuminated by light passing from the lamp through opening 20 in the box. Specification 349,617 is referred to in the Provisional Specification.
Patent GB-868528-A (GB)
Title: Thermoplastic connecting members for pipes and method of preparing them
IPC: B29D23/00
Filed: 1959-06-24
Abstract: 868,528. Making tubes; coiling. SVENSKA METALLVERKEN A.B. June 24,1959 [July 26, 1958], No. 21719/59. Classes 83 (2) and 83 (4). [Also in Group XXVIII] A helical tube to be embedded in a thermoplastic pipe connecting member is formed by distributing combustible material 14 from a feed hopper 15 on to a metal strip 11, drawing the covered strip through a drawplate 16 to form the tube, drawing the tube through a further drawplate 17 so as to reduce its diameter and to compress the combustible material and finally shaping the tube into a helix 19 through a rotating drawplate.
Patent GB-833316-A (GB)
Title: An arrangement for truing profiled grinding wheels for grinding helically toothed involute spur gears
IPC: B24B53/075
Filed: 1958-07-07
Abstract: 833,316. Trueing grinding wheels. ZAHNRADFABRIK FRIEDRICHSHAFEN A. G. July 7, 1958 [July 5, 1957], No. 21759/58. Class 60. An arrangement for trueing a profiled grinding wheel used for grinding helically-toothed involute spur gears comprises a trueing tool 6, Fig. 4, disposed on a plate 12 capable of performing a rolling motion on a cylinder 1 which has a diameter equal to the base circle diameter of the workpiece and is fixed to the machine with its axis parallel to that of the workpiece, the trueing tool acting along the straight generating line 4 at the helix angle of the involute helicoidal surface of the toothing. The tool is mounted on the plate 12 and may be in the form of a knife edge 6<SP>1</SP> lying on the line 4, or a diamond 8, Fig. 5, reciprocated along the line 4 which is tangential to the cylinder and at the angle #g from a line 21 on the surface of the cylinder parallel to the axis 2 thereof, the diameter of the cylinder being equal to the base circle diameter of the workpiece. The length of the knife edge 61 or travel of the tool is slightly greater than a length b, c, Fig. 1, the ends of which are in planes b, b<SP>1</SP>, c, c<SP>1</SP>, lying at the ends of a line b, c<SP>1</SP> representing the line of engagement between the grinding wheel and workpiece. Both faces 10<SP>1</SP>, 1011 of a grinding wheel 10, Fig. 6, or a face on each of two grinding wheels, on a shaft 22, which is rockable and vertically adjustable, may be trued by tools in the form of knife edges or by diamonds 8 reciprocated manually or by motors in the direction of axes 17 on heads 16 adjustable to the helix angle #g of the workpiece on arms 18 secured to plates 12 capable of rolling by means of bands on the cylinder 1, the plates engaging one another by means of lugs 20 fastened to the bands. The arrangement may be mounted behind the tailstock of the machine with the axis of the cylinder coaxial with the axis of the workpiece or suspended above the grinding wheel, the distance between the axes of the cylinder and grinding wheel being the same as that between the grinding wheel and workpiece. The cylinder may be interchangeable with others of different diameter or have an adjustable diameter.
Patent GB-258073-A (GB)
Title: Improvements in the manufacturing of porous artificial stone
IPC: C04B28/22
Filed: 1925-08-31
Abstract: 258,073. Eriksson, J. A. Aug. 31, 1925. Porous concrete is made by mixing a finely divided intimate mixture of lime and silica-containing material with water and a gas-generating agent, and hardening the resulting porous mass by steam under pressure. The preferred silicacontaining material is calcined slate or alum shale. A powdered metal such as zinc or aluminium is preferably used to generate gas, but porosity may be obtained by any other means, e.g. the use of soaps or of ice.
Patent GB-742309-A (GB)
Title: A retractable undercarriage for aircraft
Inventor: PERDUE JACK
IPC: B64C25/34
Filed: 1952-08-29
Abstract: 742,309. Aircraft undercarriages. ELECTRO-HYDRAULICS, Ltd. Oct. 23, 1953 [Aug. 29, 1952]. No. 21776/52. Class 4. A retractable aircraft undercarriage includes ground contacting elements comprising at least one wheel or set of wheels in tandem with another wheel or set of wheels, and also a member articulated to the undercarriage structure and carrying said wheel or wheels, and means carried by said elements which means on retraction, are adapted to co-operate with means on the aircraft or undercarriage to alter the articulated relation of the ground contacting elements to the undercarriage structure to facilitate storage of the undercarriage. In one embodiment (Fig. 1) the invention is applied to an undercarriage constructed as described in Figs. 4 and 5 of Specification 674,237, and provides rollers 61, 59 on the bogie 52 adapted to co-operate with cam surfaces 62, 63 on strut 4 to tilt bogie 52 to lie parallel with the leg 2 when retracted. In the embodiment of Figs. 6 and 9, the main undercarriage leg 1 is supported by a rigid strut 4 pivoted to the aircraft at 6 and to the leg at 5, and by a bearing 22 abutting stops on the aircraft (not shown) and locked by levers 41 spring-biased by spring-box 70 to engage studs 42 on the aircraft. On retraction, a jack 66 extending between the strut 4 and lug 67 contracts, and an auxiliary jack (not shown) removes lever 41 from studs 42, and as the main jack contracts, bearing 22 pivots on bars 39 about pivot 40, so that bars 39 and leg 1 jackknife to the retracted position. As shown in Fig. 9, rollers 61 on the bogie 52 contact a recess 76 in a resiliently mounted hook 75.so that as leg 1 and strut 4 become parallel, the bogie 52 is constrained to tilt parallel to leg 1. Brake torque reaction devices 73 are provided as described in Specification 635,842. An auxiliary shock-absorber 56, 57 is pivoted to a lug 50 on the leg and slides in a sleeve (not shown) pivoted at 71 to the bogie so as to bias the rear wheel to touch down first, and allow the bogie to tilt relatively to the leg. Specification 635,885 also is referred to.
Patent GB-411708-A (GB)
Title: Improvements in electric time switches
IPC: G04C23/24
Filed: 1933-08-03
Abstract: 411,708. Time switches. LANDIS & GYR AKT.-GES., 1, Hofstrasse, Zug, Switzerland. Aug. 3, 1933, No. 21825. Convention date, Aug. 23, 1932. [Class 38 (v).] A time switch comprises a twenty-four hour dial b driven by clockwork or a synchronous motor provided with tappets d which are adapted to operate two switches detachably mounted in close proximity to the dial. One switch comprises two contact springs e moved into and out of contact by means of a cam i driven by a tappet d and pinion d<1>. The switch is mounted on a bar g having a plate k detachably mounted on the base a. The other switch s comprises two contact springs one of which has an insulating extension o to which is pivoted a spring controlled arm n carrying a pawl m which rests against one limb of a V-shaped spring l between the limbs of which is positioned a triangular cam x rigidly connected to a pinion d'. In the position shown, if the cam p is turned anticlockwise by hand a nose q engages the pawl m which is prevented from moving by the spring l and so slides to the left along the spring moving the member o to close the switch s. The switch is held closed by the notch r engaging a spring catch, not shown. When the tappet d rotates the pinion d<1> and hence the cam x, the spring l moves upwards out of the way of the nose r and the switch is opened. While the cam x is in this position it is impossible to close the switch s. Thus with the tappets d arranged diametrically opposite as shown, while the right hand switch is closed it is impossible to close the switch s or if the switch s has been closed it is opened when the right hand switch is closed. A pair of arrows carried by the extension of the part o are visible in turn through a window to indicate the position of the switch.