baber/WOPTO huggingface dataset:
Patent GB-1328842-A (GB)
Title: Gas powered drive unit
Inventor: GREEN D T
IPC: A61B17/00
Filed: 1970-04-16
Abstract: 1328842 Pneumatic actuators UNITED STATES SURGICAL CORP 25 Aug 1970 [25 Aug 1969] Divided out of 1328841 18260/73 Heading F1D In a pneumatic actuator downward movement of a spring-returned piston 112, Fig.1, is initiated by a trigger 136, Fig.2. This permits a spool 104 to move down and open an input port 102 to admit gas under pressure into a chamber 132. Gas pressure acting on a seal 106 now overcomes the force of the return spring 117 and forces the spool and piston down until the position shown in Fig.2 is reached. In this position the spool closes on exhaust port 126. Gas now passes through a transfer port 110 and forces the piston down as shown in Fig.3. As the pressure rises in a chamber 134 the spool is raised by pressure on its underside which is of greater area than that of the diaphragm 106. Gas now passes into a chamber 130 where it acts on the underside of a diaphragm 108 and returns the spool to its original position and closes the inlet port 102. The gas from above the piston 112 is vented through the exhaust port 126 and the spring 117 raises the piston to its original position as shown in Fig.1. A port 124 prevents from pressure building up in a chamber 128 due to flexing of diaphragm 108.
Patent GB-702949-A (GB)
Title: Process for the manufacture of acetoacetic acid amides
Filed: 1951-08-01
Abstract: In a process for the manufacture of acetoacetic acid amides diketene is reacted with a salt of carbonic acid with ammonia or an aliphatic amine containing at most two carbon atoms. Carbonates and bicarbonates used as starting materials may be derived from ammonia or methylamine or ethylamine, e.g. monoethylamine carbonate, monomethylamine carbonate and ammonium carbonate and the corresponding bicarbonates and commercial mixtures consisting of the carbonate and bicarbonate of one of these bases which may also contain ammonium carbamate.  In examples a solution of acetoacetic amide is obtained by stirring ammonium carbonate with water and dropping in diketene whilst cooling the reaction mixture, further portions of ammonium carbonate and diketene being added subsequently (1); ammonium bicarbonate is similarly reacted with diketene and, e.g. phenylhydrazine hydrochloride is gradually added to the product to obtain 1-phenyl-3-methyl-5-pyrazolone, which separates on adding hydrochloric acid and cooling (2); carbon dioxide is added to a monomethylamine solution until Brilliant Yellow paper remains only slightly red in the solution, the product is cooled in ice and diketene is gradually added to obtain a solution of acetoacetic acid monomethylamide (3) and a solution of acetoacetic acid monoethylamide is similarly obtained using monoethylamine solution as starting material (4).  The amide contents of the solutions obtained are determined by titration with diazotized p-nitraniline or diazotized o-anisidine.  U.S.A.  Specifications 2,152,132 and 2,174,239 are referred to.
Patent GB-319755-A (GB)
IPC: A61B1/06
Filed: 1929-06-13
Abstract: 319,755. Gral-Ges. f³r Electro-Industrie. Sept. 28, 1928, [Convention date]. Bulbs.-In an appliance for illuminating the mouth and throat and other bodily cavities, a lens a, which is mounted in front of an incandescent electric lamp b, is made of pale blue glass, which is adapted to counterbalance the red rays of the illuminating beam, so as to produce a light approximating in quality to sunlight, thus rendering the lamp more suitable for the detection of any abnormal redness of human tissues. The lamp may comprise a tube c of non-transparent material, such as opal glass, mounted on a holder d of the usual type, and may be either straight or bent.
Patent GB-775024-A (GB)
Title: Micro-manipulator
IPC: B25J7/00
Filed: 1954-06-22
Abstract: 775,024. Micro -manipulators. FONBRUNE, P. H. D. DE., and BEAUDOUIN, P. A. June 22, 1954 [June 23, 1953], No. 18275/54. Class 97(1) In a pneumatically operated micro-manipulator a flexible metal plate 20 about which the shank 5 of a micro-tool holder pivots and to which is rigidly connected is perforated so as to permit the shank to move in a direction perpendicular to the plane of the plate. Preferably, three mutually perpendicular manometric capsules 2, 3, 4 control the movement of shank 5, and the apertures in plate 20 have the form of circular arc 21. Preferably, each capsule is deformable in at least two membranes, one being attached to a wall of a case 1 and the other at 11, 12 or 13 being connected to the shanks 5. As shown,. bands. 17 and 18 transmit the movement of connecting rods 15 and 16 to shank 5 and each rod has flexible extremities to allow for the movements of the others. Case 1 and tube 19 carrying plate 20 may be made from electrically insulating material. An additional micro-tool 23 may be provided integral with rod 24 which slides in sleeve 25 which is fixed to the ball of ball and socket joint 27. A control rod 29 may be fixed to sleeve 25.
Patent GB-334630-A (GB)
Title: Improvements in band brakes
IPC: F16D49/02
Filed: 1929-06-14
Abstract: 334,630. Jerams, A., and Yates, A. June 14, 1929. Band and coil ; covers for brakes; energy-absorbing elements.-A band brake comprises a spring steel band A coiled about a drum B to be braked. The ends of the band are connected to a length of rope or chain H which passes around a sprocket wheel F, the spindle of which is slidable in a slot L formed in the casing J which encloses the brake. When by means of a stirrup M the wheel F is drawn to the right to tighten the band, one or other of the pieces E, E<1> secured to the band abuts through a spring D, D' against an adjacent stop pin C, C' through which the band freely passes. Springs I, I<2> return the band. The band is maintained concentric with the drum by projections K on the casing J and on a fixed part O. The drum B has a flanged face which serves to close the casing and is provided with perforations by which air currents are induced for cooling the parts.
Patent GB-1337178-A (GB)
Title: Blood serum analytical control standard
IPC: G01N33/96
Filed: 1971-06-01
Abstract: 1337178 Blood serum control standard BAXTER LABORATORIES Inc 1 June 1971 [1 June 1970] 18376/71 Heading B1X A control standard for the analytical determination of at least three blood serum components, comprising a mixture of the blood serum components the respective concentrations of which have been predetermined by random selection from a predetermined range of lowest to highest concentration levels of each component, the three components and their corresponding concentration ranges being included in the list below. In an example, pooled human serum is filtered and treated with cation exchange resin to reduce the sodium and potassium levels of the serum, tris buffer or lithium hydroxide being added to maintain the pH of the serum at its original value, the pH of the treated serum is adjusted to 6 to 6.5, the serum is analysed for the seventeen components listed, a range of lowest to highest level concentrations is established for each component on the basis of instrumentation parameters and clinical significance, concentration values within each range are randomly selected, components are added to the treated serum to adjust the concentrations of the respective component to these random values, and the serum is refiltered, placed in vials and lyophilized. The components and their lowest to highest concentration levels are as follows: sodium 130 to 165 mequiv/litre; potassium 3 to 8 mequiv/litre; chloride 105 to 130 mequiv/litre; phosphorus 3.0 to 15 mgm/100 ml; calcium 5 to 14 mgm/100 ml; blood urea nitrogen 11 to 20 mgm/100 ml; uric acid 5 to 12 mgm/100 ml; creatinine 1 to 7 mgm/100 ml; glucose 65 to 400 mgm/100 ml; cholesterol 165 to 275 mgm/100 ml; bilirubin 0.5 to 2 mgm/100 ml; total protein 5.5 to 7.2 gm/100 ml; lactic dehydrogenase, 400 to 2400 spectrophotometric units; amylase 65 to 400 Somogyi units; acid phosphatase 0.4 to 3 Bessey-Lowry-Brock units; alkaline phosphatase 1.5 to 7 Bessey-Lowry-Brock units; protein-bound iodine 4.8 to 10.2 microgms/100 ml.
Patent GB-658925-A (GB)
Title: Potato chipping machines
IPC: B26D3/18
Filed: 1949-07-13
Abstract: 658,925. Potato chippers. NOEL. H., and METCALF, C. B. L. July 13, 1949, No. 18471. [Class 5(i)] In a potato chipper in which a reciprocated pressure head 27 forces a potato through a knife block 28, the potatoes are dumped through a hopper hole in the top casing on to a rotated disc 15 from which they are received one at a time by recesses 20 in a horizontal rotor 19 and swept round to drop down a shoot 26 into the space in front of the reciprocating head 27. The disc 15 is conical and is partly overlapped by the rotor 19. The machine is driven from a motor through a worm wheel 32 and sprocket chains 44, 47, the pressure head 27 being reciprocated from a crank disc 39. The driving mechanism is protected from contact with potato dirt by a partition 18 and by the wall of the shoot 26.
Patent GB-516434-A (GB)
Title: Improvements in or relating to vehicle frames
IPC: B62D21/02
Filed: 1938-06-21
Abstract: 516,434. Vehicle bodies. ASSOCIATED EQUIPMENT CO., Ltd., and RACKHAM, G. J. June 21, 1938, No. 18484. [Class 108 (i)] [Also in Group XXXI] In a vehicle frame of the kind wherein the underframe extending across the axles also forms part of the framework of the vehicle-body, the underframe comprises laterally spaced longitudinal frame members extending along the major portion of the length of thevehicle and cross-members connecting these longitudinal members which are extended outwardly beyond them to afford mountings for the pillars of the body-work, and is characterised in that the extensions of the cross-members are connected to their central portions by means other than the longitudinal members in addition to being connected to the latter. The crossmembers 30. 31, 32, Fig. 2, are of approximately the..same depth as the longitudinal members 20, 21, and are formed in three parts. The central parts 39, 42, 45 serve to space the members 20, 21 and are connected to the outside parts 38, 40; 41, 43 and 44, 46 by plates 47, 50; 48, 51 and 49, 52; respectively. The rear crossmember 29 is continuous and is coupled to the members 20, 21 as described in Specification 516,727. Front cross-members 34, 35 are provided, and also upwardly inclined outrigger brackets 36, 37 over the wheel arches. Each cross-member 31, 32, 39 is connected to a longitudinal member and to a side pillar of the body-work as shown in Figs. 3 and 4. Rivets 62 connect turned-over end flanges 61 on the central part 45 and flanges on the outwardly extending part 44 to the member 20. The part 45 is of single channel section, but the part 44 is of double channel section and tapers as shown. The top and bottom flanges of the part 45 are continued outwardly in the form of triangular plates 49, 57, and are riveted to the parts 20, 44. Angle brackets 63, 64, 65 riveted to the part 44 are riveted to a supporting member 68 carrying a body-work pillar 69. The cross members 31, 32 are connected by a short longitudinal member 72, Fig. 2. A short cross member 75 having an outside extension 76 connects the member 72 to the member 20. A part 77 corresponding to the extension 76 is mounted on the member 21.
Patent GB-634493-A (GB)
Title: A differential mechanism especially for controlling variable pitch air screws
IPC: B64C11/36
Filed: 1946-06-19
Abstract: 634,493. Variable-pitch propellers. COMPAGNIE GENERALE POUR L'EQUIPEMENT AERONAUTIQUE. June 19, 1946, No. 18493. Convention date, July 5, 1945. [Class 114] [Also in Group XXIV] The angular position of the propeller blades is adjusted by a worm driven from the wheel 17, movement of which only takes place when a difference of speed occurs between the engine shaft 1 and the control shaft 29, the wheel being driven through an epicyclic train. The shaft 29 may be connected to a motor to run at constant speed, or may have its speed varied in contrary sense to the variation in the engine shaft to speed up the pitch adjustment. This speed variation is obtained from friction gearing comprising balls 49 in a cage 50 driven from the engine shaft, and capable of radial movement between a spring-pressed plate 53 and a conical gear 47 connected to shaft 29. For rapid feathering movement a gear train of different ratio is brought into operation controlled by a solenoid. The pitch can be maintained locked by a similar solenoid.
Patent GB-993221-A (GB)
Title: Improvements in and relating to the purification of hydrofluoric acid
IPC: C01B7/19
Filed: 1963-05-10
Abstract: Hydrofluoric acid containing less than 0.5 parts per billion (p.p.b.) arsenic and/or less than 0.5 p.p.b. phosphorus is produced by contacting hydrofluoric acid with a non-halogen oxidizing agent capable of forming high boiling point compounds with the impurities and/or free iodine, bromine, or chlorine to form high boiling-point oxidized impurity compounds and/or halogen-impurity compounds which are then separated.  The oxidizing agent and iodine, bromine, or chlorine may either be contacted with the hydrofluoric acid simultaneously or alternately in either order.  Separation of the impurity compounds may be by distillation, although selective adsorption or differential diffusion through a membrane or porous medium may also be used.  Specified oxidizing agents are ammonium, alkali metal, and alkaline earth metal permanganates, persulphates, chlorates, and manganese dioxide. Elemental iodine, bromine, or chlorine, or their compounds which release the nascent halogen may be used.  Contact is preferably effected at the boiling-point of hydrofluoric acid.  To aid sulphur removal, a barium compound, e.g. BaO, may be added with the oxidizing agent.  In a typical example, hydrofluoric acid was distilled with an aqueous solution of potassium permanganate in a P.T.F.E. distillation flask and column.  The initial one-third of the distillate was discarded, and to the remainder was added crystalline iodine, distillation being renewed in similar but clean apparatus.
Patent GB-1040204-A (GB)
Title: Heat insulating metal section
IPC: B29C65/48
Filed: 1965-05-03
Abstract: 1,040,204. Making heat insulating panels. ALUMINIUM PRESS UND WALZWERK MUNCHENSTEIN A.G. May 3, 1965 [May 2, 1964], No. 18535/65. Heading B3A. [Also in Division F2] A heat insulating panel or the like has hollow spaces of rectangular cross-section which are filled with an intermediate layer 3 of plastic or synthetic rubber. The hollow section, which may extend the whole distance between the outer layers, is cut away at 6 and baffles 5 may be provided to anchor the insulating layer. The filling may be fluid, pulverulent or solid and in the latter case it may be undercut in the region of the cut away (Fig. 3, not shown). The filling is bonded to the walls of the hollow spaces before the hollow section is cut.
Patent GB-583398-A (GB)
Title: Improvements in or relating to devices for holding flexible photographic film
IPC: G03B27/62
Filed: 1944-09-28
Abstract: 583,398. Film holders. KIESCHKE, W. Sept. 28, 1944, No. 18540. [Classes 97 (i) and 98 (i)] A device for holding flexible photographic film for projection purposes comprises a baseplate 3 formed with a shallow groove of the width of the film 5 and having undercut edges, and a frame or transparent body 7 resiliently connected to the base-plate and movable in the exposing aperture of the base-plate. The frame or body 7 is secured to the tray 1 which contains the base-plate, four leaf springs 8 lying between the bottom of the tray 1 and slots 9 in the base-plate. A secondary groove 15 with steps 16 may be formed in the groove 6, leaving the central portion of the film free of the plate. Screws engaging in corner slots of the frame 7 restrict the movement of the latter. In a modification, not shown, a transparent block replaces the frame and a pair of transverse leaf springs urges the block away from the tray. When the device containing the film is brought into contact with the plane surface bridging the aperture, e.g. the condenser lens, the film is flattened, but the tendency to transverse curvature produced by the interaction of the frame and the undercut edges counteracts any tendency of the film to buckle.
Patent GB-1187131-A (GB)
Title: Method for producing Imidazolines and derivatives thereof
Inventor: MANNHEIMER HANS S
IPC: C07D233/10
Filed: 1967-04-21
Abstract: 1,187,131. Imidazolines. H. S. MANNHEIMER. 21 April, 1967 [22 April, 1966; 5 April, 1967], No. 18599/67. Heading C2C. An organic reaction product having a high content of an imidazoline of the formula wherein R 1  represents a C 2-4  alkyl or C 2-4  alkylol radical and R represents an alkyl, alkenyl or cycloalkyl radical containing at least 5 carbon atoms, a hydrocarbon radical of a resinic acid, or an alkaryl or alkenylaryl radical, the alkyl or alkenyl moiety containing at least 6 carbon atoms, is prepared by heating a diamine NH 2 -(CH 2 ) 2 -NHR 1  with a fatty acid R-COOH and continuously removing water of reaction and some of said diamine as a distillate, heating being continued until at least 1À75 mols water per mol fatty acid have been removed as distillate and, while said water of reaction is being produced, continuously maintaining in the reaction mixture at least 1À08 mols diamine per mol fatty acid originally in said mixture, the amount of diamine being calculated on the basis that none of the unremoved amine has reacted. It is preferred to use 1À1 1 mols diamine per mol acid, to continue the reaction until about 2 mols water have been removed and subsequently to strip the excess amine from the reaction mass. The reaction is generally effected by heating the reactants to an initial temperature of about 140‹ C. under reduced pressure and thereafter increasing the temperature to about 200‹ C. while further reducing the pressure and adding sufficient diamine below the surface of the reaction mass to maintain the required excess. The resultant produce has a particularly low diamide content and forms acid addition or quaternary salts which provide clear solutions in water. Examples describe the preparation of imidazolines from aminoethylethanolamine and lauric or coconut fatty acid and quaternization of the products with chloroacetic acid and NaOH.
Patent GB-328493-A (GB)
Title: Diffuser for obtaining gaseous combustible mixtures
IPC: F23D17/00
Filed: 1929-06-18
Abstract: 328,493. Penicud, J. W. June 18, 1929. Spray burners.-In a spray burner of the type comprising a central axial fuel supply and a con. centric annular air supply, the fuel supply tube is adapted to be partially obturated by a biconical diffusing pin and the air supply is regulated by means of an iris diaphragm. The fuel supply tube 6 is axially adjustable by means of a hand wheel 7 and its outlet is partially obturated by a biconical plug 4 which serves to regulate and spread out the fuel in conical form. The plug 4 is held centrally in a nozzle 3 by radial arms 5, said nozzle being fitted in an easily detachable manner by a bayonet joint to a portion 2 screwed to the body of the burner 1. Air, arriving under pressure in the body 1 is divided by a socket 11 into two annular streams and is regulated by an iris diaphragm 14, controlled by a lever 15, adapted to partially or completely close the outer or secondary air passage 13 and in the latter case may also partially or completely close the inner or primary air passage 12. The air pressure in the burner may be measured by a gauge attached to a cock 16. The whole apparatus is secured to a support 17.
Patent GB-354481-A (GB)
Title: Delayed action electrical indicator
IPC: H04M3/64
Filed: 1930-06-19
Abstract: 354,481. Electric indicators. GELDER, E. L. M. VAN, 11, Purcells Avenue, Edgware, London. June 19, 1930, No. 18738. [Class 40 (i).] The shutter of an indicator is not released until the operating circuit has been completed for an appreciable time. When the magnet is energized the armature 5 begins to rotate, the projection 22 being V-shaped to present a gradually increasing surface to the core 23. When its stroke, determined by the stop 25, is almost completed, a projection engages the end 20 of the lever 6 and the shutter 7 is released. The armature may be counterbalanced by means of a pair of weights 24.
Patent GB-274491-A (GB)
Title: Method and apparatus for using telephone subscribers' loops for transmission and reception of broadcasting
IPC: H04H20/81
Filed: 1927-07-15
Abstract: 274,491. Squier, G. O. July 17, 1926, [Convention date]. Wired wireless systems; multiplex signalling. - In a wired-wireless system modulated high-frequency currents are passed over the individual subscribers' loops of a telephone system by impressing high-frequency energy simultaneously on all the loops by means of the wires of an otherwise unused loop. Highfrequency signals are passed from transmitting- station 1, 2, 3 to a central pair of wires 7 in a telephone cable 10 through transformers 5, 6. The signals are then communicated to the other pairs of wires 11 in the cable by radiation and capacity effects. At a receiving-station 13 two small highfrequency bye-pass condensers 19, 20 are connected across wires 12 and a wireless receiving- set 22 is connected to a point between the condensers.
Patent GB-995415-A (GB)
Title: Improved liquid ring pump
IPC: F04C19/00
Filed: 1961-05-24
Abstract: 995,415. Liquid-ring pumps. I. C. JENNINGS. May 24, 1961 [Feb. 20, 1961], No. 18793/61. Heading F1C. A single-lobe liquid-ring pump is arranged so that the out-of-balance forces acting on the pump rotor are reduced. A single-lobe liquidring pump, Figs. 2 and 3, comprises heads 12 at each end of the casing and each carrying the usual conical port members 34 surrounding the shaft and projecting into the rotor. Each head 12 comprises an inlet 32 and three alternative discharges 42, the two unused discharges being blanked-off by cover plates 44. Shaft bearings 16 and stuffing boxes 17 are carried by the heads 12. The two halves of the pump are separated by a central partition 26 on the rotor and a central partition 28 in the casing. The lobes 30 of the two halves of the pump are in alignment with one another and are so disposed that the thrust exerted on the rotor by the compression forces acts upwardly in opposition to the weight of the rotor. Alternatively, the two lobes may be arranged at 180 degrees with respect to one another whereby the thrusts exerted by the compression forces balance one another. A recess 56 in each head 12 may be blanked-off by a cover plate. However, if reduction gearing 62, 64 is provided, an alternative apertured cover plate 58 is used, in conjunction with a gear chamber cover 60, the cover plate apertures providing communication between the gear chamber and the recess 56 whereby the latter acts as a lubricant reservoir. The lubricant is circulated within the recess 56 by an impeller 72 and cooled by conduction through the walls of the recess to the relatively cool seal liquid passing through the pump discharge passage 40. Longitudinal passages 50 communicating with the lobes 30 through ports 48 and connected to transverse passages 52 allow the pump to be unloaded or drained by opening the passages 52 to atmosphere through valves and piping not shown. The pressure existing in the passages 52 during normal operation may be communicated through piping 84, Fig. 6, and a passage 80 to arcuate grooves 76 in each port member 34, whereby a downward thrust is extended on the rotor to act against the upward thrust exerted by the compression forces. Specifications 324,249, 324,286, 850,140 and 995,416 are referred to.