baber/WOPTO huggingface dataset:
Patent GB-137301-A (GB)
Title: Improvements relating to internal combustion engines
IPC: F02B77/04
Filed: 1919-12-29
Abstract: 137,301. Domestic Engineering Co., (Assignees of Kettering C. F.). Dec. 26, 1918, [Convention date]. Cylinders, construction of and cooling.-A combustion chamber in the form of a bell or bell-shape in vertical cross-section has overhead inlet and exhaust valves located near its closed end. Cooling-fins 14, 23 are provided upon the cylinder walls', and the combustion chamber, respectively. Other cooling fins are formed upon the exhaust pipe, and adjacent the pipe additional short fins are formed. upon the wall of the combustion chamber.
Patent GB-948937-A (GB)
Title: Method and apparatus for producing films of organic thermoplastic material having improved optical properties
IPC: B29C48/10
Filed: 1960-09-22
Abstract: 948,937. Film making apparatus. INTERNATIONAL DEVELOPMENT CO. OF NATIONAL DISTILLERS & CHEMICAL CORPORATION S.A. Sept. 22, 1960 [Oct. 6, 1959], No. 32629/60. Heading B5B. Either a continuous flat or a continuous tubular film is formed by extruding a molten or heat softened organic thermoplastic material through a slot die or an annular die to form a flat or a tubular film which is then passed through at least one cooling zone in which the film, if of the tubular type, is inflated and stretched to produce molecular orientation. The freshly extruded flat or tubular film is passed in a free path through a chamber or chimney which extends between the die and the cooling zone and forms an annealing zone. The temperature of the freshly extruded film during its passage through the chimney is maintained between the extrusion temperature and a temperature not more than 50 F. below the extrusion temperature. As shown in Fig. 1, the heated thermoplastic material is expelled from the extruder 1 through the elbow 5 in which its temperature is maintained by the electric resistance heater 27 and extruded through the annular extrusion orifice 17, to form a tubular film which is drawn from the orifice by nip rolls 31 and 33 and inflated by the introduction of slightly pressurized air through the conduits 23, 19 and 21. In conventional operation, the film is subjected to shock cooling as soon as it leaves the die by means such as an annular hollow body 41 having an inner wall 43 provided with a ring of ports 49 through which a slightly pressurized flow of air from a conduit 45 is discharged against the film. In conventional apparatus the member 41 is disposed immediately above the extrusion orifice. In the present invention the cooling zone, in this case provided by the member 41, is disposed axially in spaced relation to the extrusion orifice 17 by a distance of, for example, about 4 to about 28 inches, preferably about 6 to 10 inches. In this space between the cooling ring 41 and the upper end 9 of the die is disposed an annealing chimney 51 consisting of a vertical metal tube of which the lower end portion is threaded to be engaged by a coupling nut 53 also adapted to engage the upper end 9 of the die. The chimney 51 is lagged with a thermal insulation jacket 55 or may be enclosed in a cylindrical electrical heating jacket. The ratio of the internal diameter of the chimney 51 to the outer diameter of the die extrusion orifice may range from about 1.1 to 1 to about 4 to 1, preferably about 2: 1 to about 3: 1. The chimney may be split longitudinally in two removably mounted halves to obviate the necessity for threading the film through a one-part chimney at the commencement of film production. The process and apparatus of the invention enable films of improved gloss and transparency to be produced.
Patent GB-833255-A (GB)
Title: Improvements relating to electric supply systems
IPC: H02J3/38
Filed: 1956-10-26
Abstract: 833,255. Automatic voltage control systems. GENERAL ELECTRIC CO. Oct. 26, 1956 [ Oct. 28, 1955], No. 32723/56. Class 38 (4). In an A.C. supply system in which the output voltage of three parallel connected transformers is automatically controlled by tap changing, closer voltage regulation at the expense of some circulating current is obtained by adjusting the transformers one tap at a time in sequence. In one embodiment, Fig. 1, the load circuit 20 is connected to the supply 16 by transformers 10, 11, 12 having tapped secondaries and tap changing motors 30, 31, 32 which are under the general control of a voltage-responsive relay 22 connected to the load circuit 20 by a transformer 26 via a line drop load current compensator consisting of a current transformer 28 and impedances 23, 24. The relay 22 controls a master " raise contactor 85 and a master " lower " contactor 86. Each tap change motor, 30, 31, 32 additionally operates banks of cam-actuated contacts. Cams 57, 67, 77 open their contacts between each tap change and interrupt the master contactor energizing circuit to prevent over-run. The associated cams, e.g. 53, 63, 73, provide an interlock to prevent energization of the master contactors if the transformers get more than one tap out of step. The remaining cams, e.g. 50, 60, 70, control subsidiary " raise " and " lower " contactors 110, 111, 112, 113 to decide the sequence of tap-changing operations. If all three transformers are in the same tap position, then the first adjustment is made on transformer 12 which moves one tap. If the correction is insufficient, transformer 11 moves one tap, then transformer 10, and thence back to transformer 12 and so on. If adjustment in the reverse sense is required, the transformer which last operated is adjusted one tap in the new direction, followed by the others in the sequence 10, 11, 12, until all three are again level, when transformer 12 again takes the lead in the new direction. In a second embodiment, Fig. 2 (not shown) each transformer is controlled by its own voltage sensitive relay and line-drop compensator as in Specification 589,853, but the voltage relays of the two " follower " transformers are set to respond to progressively lower voltages than the " leader," and an additional coil carrying circulating current is added to bias each line drop compensator. Should the output voltage fall, the " leader " moves one tap, and the resulting circulating current biases its relay to render it inoperative and biases the relay of the next transformer to the operating point so that it would respond to any further fall in voltage. This in turn biases the third relay to the operating point. Specification 587,881 also is referred to.
Patent GB-1040519-A (GB)
Title: Aminooxidation of olefins and catalysts therefor
IPC: B01J23/31
Filed: 1965-07-30
Abstract: Acrylonitrile and methacrylonitrile are made by reacting propylene and isobutylene respectively with ammonia and oxygen in the gaseous phase at 350 DEG  to 600 DEG  C. in the presence of a catalyst containing Mo, Bi and oxygen, sulphuric acid or a sulphate having been used in the preparation in a proportion of up to 30%. Steam may be an inert diluent in the gaseous reaction stream.ALSO:An aminoxidation catalyst comprises Mo, Bi and O supported on an inert carrier material, H2SO4 or a salt thereof having been used in its preparation in a proportion of up to 30%. Specified sulphates are Na2SO4, ZnSO4, CdSo4 and BaSo4.  Specified carriers are SiO2, SiC, Al2O3 and clay.  The catalysts may be extruded in cylindrical pieces 3 mm. in diameter and 5-10 mm. long.
Patent GB-822598-A (GB)
Title: Improvements relating to heaters for fluids
IPC: C10G9/20
Filed: 1957-10-21
Abstract: 822,598. Fluid heaters; tube supports BORN, S., BORN, H. J., MARTIN, V., CANTRELL, J. F., BORN, N. R., and DANIEL, J. L., [trading as BORN ENGINEERING CO.]. Oct. 21, 1957, No. 32809/57. Classes 64(1) and 64(3) A fluid heater comprises side walls, a floor, and a top enclosure together defining a combustion space which is divided into two zones by a bank of vertical tubes 30 in which the fluid is heated suspended within the combustion space, each zone extending vertically within the heater and having at the bottom thereof heat source e.g. burners. 27, the side walls of the heater being inclined such that each zone narrows from the bottom to the top thereof. In the form shown the bank comprises two rows of the tubes 30, the tubes in adjacent rows being relatively staggered and being spaced apart by a distance not greater than the outside diameter of a tube. The tube bank is suspended from a transverse beam 29 by rings 32 and hanger rods 31. The side walls of the combustion space are lined with refractory blocks 16 and are jacketed externally as shown to provide chambers 25 in which combustion air for the burners 27 is heated. The lower ends of the .tubes 30 extend below the heater floor 12 into a channel 36 incorporating removable plates 36a whereby tubes may be replaced when necessary. The combustion products from the burners pass from the upper end of the heater through damper controlled outlets leading to a stack 20. The tubes may be interconnected at their ends by bends which are preferably detachable, or groups of the tubes may be interconnected in parallel between the inlet and outlet manifolds 34, 35.
Patent GB-873616-A (GB)
Title: Improvements in or relating to speed governors
Inventor: ELMES ROBERT TERENCE
IPC: G05D13/10
Filed: 1957-10-21
Abstract: 873,616. Variable pitch propeller control. ROTOL Ltd. Oct. 14, 1958 [Oct. 21, 1957], No. 32836/57. Class 114. [Also in Group XXVI] In a centrifugal governor the load is adjustable by a first means acting on the speeder spring and also by a supplementary means operable independently of the first means and including additional spring means to supplement the speeder spring load by a predetermined amount. The governor actuates a valve 24 controlling the supply of pressure liquid from a pump 27 to the pitch-change motor 25 of an aircraft variable-pitch propeller 16 driven by a gas turbine unit 11 and comprises flyweights 22 loaded by a speeder spring 23 adjustable by a rack and pinion device 29 operated by a lever 30 interconnected through linkage and a control box 35 with the engine throttle valve 19 and actuated by a pilot's control lever 40. An extension 60, Fig. 2, of the valve 24 has a tappet 61 in lost motion connection with a hollow rod 63 housing a spring 96 located between abutments formed by the hollow rod 94 of a piston 93 and a tube 97. A rod 102 is connected by a pin 103 to the rod 94 and has a flange 104 that engages a shoulder 98 in the tube 97. The piston 93 is urged upwardly in its cylinder 92 by a spring 99. The governor speed datum is normally determined by the speeder spring load, the parts being positioned as in Fig. 2. If it is desired to increase the engine speed without altering the power a switch 47, Fig. 1, is closed to operate a solenoid 46 and allow pressure fluid to pass through a conduit 48 and a port 105, Fig. 2, to the top of piston 93 which is thereby moved downwards causing the tube 97 to contact the tappet 61 and then the spring 96 to be compressed by an amount W-Y, the governor load being increased accordingly. The propeller pitch may be coarsened by supplying pressure fluid through a passage 85 in the governor casing 21 to the underside of a piston 79 loaded by a spring 84, upward movement of the piston raising a sleeve 82 connected to the rod 63 to thereby lift valve 24. A rack 71 adjustable by a pinion 72 provides a minimum constant speed adjustment. Specification 868,121 is referred to.
Patent GB-1036322-A (GB)
Title: Pleated air filter cartridge
Inventor: DEBAUN KENNETH WARREN
IPC: B01D46/52
Filed: 1963-08-20
Abstract: 1,036,322. Air filters. FARR CO. Aug. 20, 1963, No. 32863/63. Heading B1T. A self-contained air filter cartridge, e.g. for mounting in the air inlet duct of an air-conditioning system, comprises a frame in which are mounted a plurality of support strips 10 each folded into a longitudinal V-shape and having a number of apertures 11, the strips 10 being positioned laterally adjacent each other and having a filter sheet 25 secured to one surface. As shown in Fig. 2, the strips 10 are formed so as to comprise a pair of longitudinal edge ribs 12,13 and a longitudinal central rib 14 which are joined by lateral ribs 15. The central rib 14 has longitudinal cuts 17 between which it is cut-scored to facilitate its longitudinal folding. Stripes of glue are applied as shown by the broken lines 22 along and intermediate the lateral ribs 15 for securing the filter sheet 25, which sheet is secured to the insides of the V- shaped folds. Billowing of the sheet 25 through the apertures 11 is prevented by this arrangement. The sheet 25 is applied to the strips 10 before these are folded and in order to facilitate this folding and to avoid stretching of the sheet 25 where it overlaps adjacent strips 10, these are provided with protuberances 16 on their edge ribs 12,13 at locations adjacent each lateral rib 15. The edge ribs 12,13 are therefore slightly separated and the sheet 25 stretched at only a few points which does not seriously inhibit the folding of the strips nor cause appreciable damage to the filtering material. A tape is glued to each end of the assembled strips so as to maintain their folded configuration and when these are placed within the frame the tapes are glued to one pair of opposite sides of the frame, the other pair of opposite sides being glued and stapled to the end strips of the assembly. Suitable materials for the strips and the frame are chipboard, paperboard, cardboard and certain plastic materials which can be cutscored and folded.
Patent GB-846946-A (GB)
Title: Preparation of í¸-20-keto-pregnenes
IPC: C07J75/00
Filed: 1957-10-22
Abstract: In a process for the manufacture of D 16-20-keto-pregnenes, 17 a -hydroxy-20-keto-pregnane is reacted with semi-carbazide to form the 20-semi-carbazone which is then heated in the presence of an organic acid to produce the D 16-20-semi-carbazone which, in turn, is reacted with a semi-carbazone removing agent to produce the pregnene.  Other p  substituents in rings A, B and C such as hydroxyls, ketones, acyloxy radicals, e.g. in the 3- and 11-positions, and double bonds are retained unaltered by the process of the invention. Acetic acid is the preferred organic acid and pyruvic acid the preferred semi-carbazone-removing agent.
Patent GB-896898-A (GB)
Title: Improvements in and relating to positioning means for movable objects
Inventor: CROSSE PERCY BROUGHALL
IPC: C10B41/04
Filed: 1959-12-29
Abstract: 896,898. Control of A.C. motors. SIMONCARVES Ltd. Dec. 6, 1960 [Dec. 29, 1959], No. 32971/59. Class 38 (3). [Also in Group XXXVIII] In a system for aligning a machine opposite a selected point (see Group XXXVIII) the motor 14 which drives the machine comprises stator windings 138 and rotor windings 143 and a brake circuit 134. Power is supplied to windings 138 over contacts 126e, 126/, 126g or 127e, 127f, 127gr, according to the desired direction of travel. When the motor is started, relay 123 is released to open contacts 123a, 123b and relays 124, 125 operate to close contacts 124a, 124b and 125a, thus applying full D.C. to brake 134. Relay 128 is provided with three slugs 139, 140, 141 which delay the closure of contacts 128a, 128b, 128c by one, two, three seconds respectively, so that relays 129, 130, 131 operate in succession. Operation of relay 129 shorts out some of the resistance in the rotor circuit by closing contacts 129b, 129c and releases relay 124 by opening contact 129a to reduce the D.C. braking torque. Relay 130 then operates to shunt out further resistances in the rotor circuit and to re-energize relay 123 and release relay 125, thereby releasing the D.C. brake. Finally relay 131 operates to shunt out the last resistances in the rotor circuit. When the machine is at predetermined distances from the desired point a pulse is induced first in coil 44, then in coil 45 (or in coil 47, then coil 46, if the machine is travelling in the opposite direction) to successively operate relay 125, release relays 123, 130, 131 and then to release relays 128, 129 and operate relay 124. Cams 34-38, mounted on a carriage which automatically centres itself about the desired point, actuate switches 39-43 which cause relay 126 or 127 to release when the machine is at the normal braking distance from the desired point, thereby cutting off the supply to motor 14 and applying a mechanical brake. If the machine under or overruns the desired point, motor 14 is re-energized to drive the machine forwards or backwards until it is correctly aligned. Instead of using a slugged relay 128 to control the sequential switching of the motor control circuit, " eddy drag " from rotor 143 may be employed, the rotor current flow controlling the sequential operation of the stages as the rotor accelerates.
Patent GB-1210365-A (GB)
Title: Improvements in and relating to a device for treating a web with a liquid or gas
IPC: D06B3/12
Filed: 1969-06-30
Abstract: 1,210,365. Treating a web with a liquid. MACHINEFABRIEK BRUGMAN N.V. 30 June, 1969 [4 July, 1968], No. 32976/69. Heading D1L. In the passage (fig. 1) of a web in zig-zag fashion over rollers 9 through one or more chambers (3) each followed by a pair of driven pressure rollers (4) the rollers 9 are mounted in carbon bearings 11 on shafts 10, at least some (one) of the shafts being driven at a web-conveying speed (assuming corresponding slip-free rotation of its roller) slightly greater than that of the pressure rollers so as to avoid tensile stress in the web during passage over the rollers. The web may be of textile, paper or plastics material. Treatment may be with liquid or steam.
Patent GB-775297-A (GB)
Title: Improvements in or relating to drying or airing racks
IPC: D06F57/12
Filed: 1953-11-27
Abstract: 775,297. Clothes airers. DAWSON, P. J. Dec. 21, 1954 [Nov. 27, 1953], No. 32987/53. Class 52 (5).  A clothes airer comprises two brackets, for mounting on a wall &c., having check plates 1, 2 and inwardly-turned flanges 3, 4 to which a cross-member 5 is secured, and two lazy tongs 8, 9 laterally separated by rods 10 or the like and lying between the cheek plates when in the collapsed position. The flanges 3, 4 have key-hole slots 6, 7 and the struts of the lazy tongs are connected to the cheek plates by pivots 15, 16 and pins 17, 18 riding in slots 19, 20 and to each other by eyelets 21 through which the rods 10 are passed and turned over.
Patent GB-925232-A (GB)
Title: Method of and plotting apparatus for the marking of roads and the like
Inventor: MACPHERSON JAMES GEORGE
IPC: E01C23/16
Filed: 1958-10-16
Abstract: 925,232. Setting out warning lines on curved roads. SECRETARY OF STATE FOR SCOTLAND. Oct. 16, 1959 [Oct. 16, 1958], No. 33017/58. Class 97 (2). In determining where warning lines should be marked on a road to indicate lack of sufficient visibility, two trucks are positioned at a fixed distance apart on the road, depending upon the normal speed of vehicles using the road, and by means of mirrors on the rear truck a target on the front truck is observed, the two trucks then being moved at constant speed along the road and positions are determined where the image of the target disappears from the field of view of the mirrors, or is displaced sufficiently therein, and also where it is restored to its initial position. The two trucks are identical and each comprises a body 2 having a support 4 carrying a circular target 11 and three pivotally mounted mirrors 15, 18, 21. The forwardly directed mirror 15 and rearwardly directed one 18 of the rear truck are so adjusted initially that an image of the target 11 on the front truck is observed at a position behind the rear truck. The mirror 21 is to enable vehicles or other objects at the rear to be observed at the position behind the truck. The target 11 consists of two semicircular parts hinged together. The distance of travel of each truck is indicated by a pointer moving over a dial and driven from one of the road wheels by a flexible transmission 23.
Patent GB-966639-A (GB)
Title: Process for recovering acetaldehyde from a crude aldol condensation product
IPC: C07C/
Filed: 1962-08-29
Abstract: Acetaldehyde is removed from a crude aldol condensation product of acetaldehyde thereby purifying the aldol by distilling the product in two distillation steps, the first of which is carried out under a gauge pressure of more than 0.5 kg./cm2 in a distilling tower, the temperature of the liquor under treatment in the still being below 113 DEG C. and the second distilling step being carried out under atmospheric or reduced pressure in the same or another distilling tower, the temperature of the liquor in the still also being below 113 DEG C. Preferably 40-80% of the recoverable acetaldehyde is removed in the first step. Preferably the temperature in both towers is in the range 100-110 DEG C.
Patent GB-521311-A (GB)
Title: Improvements in or relating to taps for jars and other vessels
IPC: B65D47/24
Filed: 1938-11-15
Abstract: 521,311. Valves. CARTER & CO., Ltd., H. W., and HOLLAND, R. S. O. Nov. 15, 1938, No. 33195. [Class 135] A tap for dispensing syrup &c. from an inverted jar, and adapted to oscillate the liquid in the jar by the entry of air, comprises a screw cap 1 engaging the neck of the jar and supporting an annular member 5, the aperture in which is closed by a spherical stopper 15 having a stem 16. The stem is attached to a cross-bar 20, which, when the tap is closed, rests in grooves in the ends of rods 8 carried by the member 5, whereby the stopper is held down on an indiarubber washer 13. To open the tap, the bar 20 is turned, so that it escapes from the rods 8, and the stopper can then be raised. In a modification, the stem of the stopper is hollow, and the liquid passes into it through lateral apertures.
Patent GB-449853-A (GB)
Title: Brake for motor cars
IPC: F16D51/48
Filed: 1935-11-30
Abstract: 449,853. Brakes. DELAY, E., and BAYER, L. L., 31, Rue de la Marseillaise, Vincennes, Seine, France. Nov. 30, 1935, No. 33280. Convention date, May 8. [Class 103 (i)] In a two shoe self-energizing brake, the self-energizing effect is limited by a check cam operated by the brake operating mechanism. The brake comprises shoes 3, 4 having cams 11, 12 between the ends. Cam 12 is operated by a lever 13 and is mounted in a slide 18, 19 which on brake operation is adapted to abut against the check cam 23, so that the movement of the shoes and cam with the brake drum is limited by this cam. The cam 23 is operated by a lever 22. The levers 13, 22 are operated by a plate 15 connected to the brake operating mechanism at 16. The connection 16 is made adjustable by providing a number of holes to allow a greater effort to be applied to one or other of the levers 13, 22. The lever 22 is connected to the plate 15 by a slot 25 to allow the lever 13 and plate 15 to return to release position before the lever 22. The cam 11 is mounted on a slide 18, 19 and also on a lever 27 connected by a slot 28 to a pin 29 on the brake back plate so that when the shoes and cam move round with the drum the lever pivots about the stud 29 and the cam assumes an oblique position and separates the shoes.