baber/WOPTO huggingface dataset:
Patent GB-1150646-A (GB)
Title: Portable Collecting Device for Obraining Vapour Phase Pyrolysate Samples of Materials particularly for Infrared Analysis
IPC: G01N21/03
Filed: 1966-04-29
Abstract: 1,150,646. Optical apparatus. BARNES ENG. CO. April 29, 1966 [May 4, 1965], No. 18951/66. Heading G2J. A portable collecting device for vapour phase pyrolysis comprises a base plate 28, Fig. 3, having an electric heating element 10 shaped at 11 to support the sample to the pyrolysed, a cover 23 having an infrared transparent window 20, hermetically sealed at 27 to the base 28, to form a vacuum cell 13, a connection 18 for removably connecting to a source of sub-atmospheric pressure, the connection 18 communicating with cell 13 via a valve, operated by a handle 17 and a conduit 25 in the base 28, and disengageable means 9 on the base plate 28 for engaging an electric power supply. The device may be plugged into a power supply having various voltage selectors and a timing mechanism so that the sample is heated to a predetermined temperature for a specified time. Then the device may be fitted into an infrared spectro-photometer.
Patent GB-530740-A (GB)
Title: Improvements in means for controlling the speed of power-driven knitting machines
IPC: D04B15/98
Filed: 1939-06-29
Abstract: 530,740. Knitting-machines. TOWLE, E. L. N., and METROPOLITAN-VICKERS ELECTRICAL CO., Ltd. June 29, 1939, No. 19011. [Class 74 (ii)] The speed of the machine can be controlled either by a hand-operated lever 3 for normal working or by a pattern controlled lever 16 for shogging, plating, narrowing &c. operation of the change-speed by the lever 16 being independent of the lever 3 within the normal working speed range. At speeds below normal working speed, the lever 16 is ineffective to change the speed of the machine. The invention is described in connection with a machine having an electric driving motor 1 the speed of which is altered by rotating a shaft 2 coupled with brushshifting means within the motor casing. The lever 3 is pivoted on the motor casing and has gear teeth 5 engaging teeth on a second lever 2 also pivoted on the motor casing. The lever 7 is connected by links 9, 11 to a toothed sector 13 meshing with a pinion 15 on the shaft 2. The lever 16 is pivotally mounted co-axially with the lever 3 and beyond its pivotal point is provided with an arcuate slot 18. The slot 18 receives a pin 19 at one end of a link 20, the other end of which is pivotally connected at 21 to the link 11. The position of the pin 19 in the slot is determined by a parallel linkage comprising an arm 22 secured to the lever 3, a pair of spaced members 25 embracing the link 20, and an arm 23 pivoted on the motor casing. The link 20 is urged upwardly by a roller 28 acted upon by springs 31. A second roller 32, fixed in position between the members 25 can engage the upper surface of the link 20. As shown, the lever 16 is in inoperative position and the lever 3 is in low speed position. The pin 19 is constrained in the upper end of the slot 18 and movement in a clockwise direction of the lever 3 within limits results in anti-clockwise rotation of the sector 13, since the link 20 is prevented from horizontal movement. Further, in this position, since the link 20 has no horizontal movement, movement of the lever 16 has no effect on the sector 13 and therefore has none upon the speed of the motor. When the lever 3 has been moved sufficiently to cause the roller 32 to depress the link 20, movement in an anti-clockwise direction of the lever 16 moves the link 20 to the right so that the toothed sector 13 is rotated in a clockwise direction. The arrangement of the links is such that during normal working speeds of the machine the speed to which the machine is reduced by the lever 16 is substantially independent of the previous speed of the motor.
Patent GB-1112750-A (GB)
Title: Improvements in or relating to reciprocating pumps
Inventor: MOLENAAR HENRI CHARLES
IPC: B60S1/48
Filed: 1967-04-26
Abstract: 1,112,750. Diaphragm pumps. H. C. MOLENAAR. April 26, 1967 [May 2, 1966], No.19140/67. Heading F1A. [Also in Division A4] A windscreen washer pump comprises a diaphragm 4 moved on its discharge stroke by a spring 5 and on its suction stroke by vacuum, or, alternatively, by hand, a switch controlling a windscreen wiper motor being closed at the end of the suction stroke by a conducting strip 22 bridging spring-loaded contacts 23, Fig. 1, and towards the end of the discharge stroke the outlet port 10 is closed by the slide valve action of sleeve and projection members 39, 40 on the diaphragm and pump casing, a restricted discharge past the inlet valve 15 permitting a slow discharge movement of the diaphragm during which a lost motion coupling 36 between the diaphragm and sleeve member 21 moves member 21 to move strip 22 out of engagement with contacts 23 to open the switch, so that the wipers operate for a predetermined time after discharge of liquid has ceased. A taper on strip 22 reacts with the spring- loading of contacts 23 to provide a snap-action. A projection 43 in sleeve 39 seals port 10 at the end of the discharge stroke to prevent backflow through the suction and delivery lines. In the Fig. 4 embodiment (not shown), the projection 40 is formed on the diaphragm and the port 10 is in the bottom of a recess. Member 21 and pump casing port 1 are of insulating material. The pump casing has a threaded portion 32 for mounting it in a washer liquid reservoir. The seating of the inlet valve may be grooved to provide the restricted discharge towards the end of the discharge stroke. The projection 40 and sleeve 39 have bevelled guiding surfaces.
Patent GB-711199-A (GB)
Title: Improved method of preparing moulds for precision casting by the "cire-perdue" process
IPC: B22C1/16
Filed: 1952-07-29
Abstract: A coating for a wax model in investment casting comprises a refractory of a silicate of alumina such as dehydrated kaolinite Al2O3 2 SiO2) or refractory clay sillimanite (Al2O3SiO2) and mullite (3 Al2O3 2 SiO2) or an aluminium oxide (Al2O3) in the form of calcined alumina or corundum or sexquioxide of chromium (Cr2O3).  The binder is a solution of aluminium chloride (AlCl3) or chromium chloride (CrCl3) anhydrous or hydrated in pure water or in a mixture of water and ethyl alcohol or water and methanol, or pure alcohol. The solution also contains a small quantity of organic binder such as soluble starch, gum-arabic, gelatine or shellac, or a mineral dispersive agent such as kaolin, bentonite &c.
Patent GB-444729-A (GB)
Title: Improvements in or relating to bee hives
IPC: A01K47/00
Filed: 1935-07-05
Abstract: 444,729. Beehives. MIDDLETON, C., Fairholme, Milton Road, Pannal, near Harrogate. July 5, 1935, No. 19196. [Class 5 (ii)] An independently accessible introduction chamber 10, for worker bees from fresh swarm, is formed within the main hive by dividing off a portion of the main brood compartment 2, remote from the main entrance 1, communication between the two compartments being effected by way of an appropriate screen or queen excluder 13 in the dividing wall 8. A separate entrance 14 to the chamber may be provided, fitted with a screen 19 through which only workers can pass.
Patent GB-1373039-A (GB)
Title: Centrifugal pump with volute of concrete or the like
IPC: F28C1/12
Filed: 1972-04-26
Abstract: 1373039 Centrifugal pumps WORTHINGTON CORP 26 April 1972 [1 Sept 1971] 19282/72 Heading F1C A centrifugal pump comprises a volute casing of reinforced concrete or the like having a suction inlet open at the upper end thereof, and an impeller having an upwardly facing impeller in communication with the suction inlet whereby a free-standing volume of liquid to be pumped can enter the impeller at the top side thereof by gravity flow. As shown, the pump receives the liquid from a resevoir 11 which may also be of reinforced concrete or the like and integral with the volute casing 20. To reduce friction, the volute casing may have an inner coating 23 or a filled fluorocarbon resin, a silicone compound or other non-wetting or non-sticking material. The lower bearing 32 and the lower wear ring support 37 are carried by a mounting plate 36, while the  upper bearing 33 is carried via spider arms 44a by a mounting frame 45 which also carries the upper wear ring 52. The support for the driving motor 42 includes circumferentially spaced bars 62 which form a trash filter and may be shaped to act as inlet vanes. Such vanes may be movable in unison by means of a manual or automatic control.
Patent GB-901228-A (GB)
Title: Improvements in pulverising mills
Inventor: FRENKEL MEYER SCHLIOMA
IPC: B02C15/12
Filed: 1959-06-05
Abstract: 901,228. Ball-and-ring mills. FRENKEL C-D CO. Ltd. June 3, 1960 [June 5, 1959], No. 19305/59. Class 59. In a mill comprising a ring of balls supported on an upwardly facing annular track of concave cross-section, means are provided for guiding and loading the balls against the track which comprise at least one ring coaxial with the track and engaging upper parts of the balls outside their pitch circle and applying to the balls pressure towards the track with a radially inward component, and means are provided for effecting relative rotation between the track and the loading ring about the centre of the track. There may also be provided at least one ring coaxial with the track and engaging upper parts of the balls inside their pitch circle and applying to the balls pressure towards the track with a radially outward component. The loading rings may be operated simultaneously or selectively. As shown, three balls 20 are loaded against a track 18 on a rotary table 15 by means of outer and inner rings 22, 23 respectively. The radially inward component from ring 22 is greater than the radially outward component from the ring 23 by an amount which balances or exceeds the outward centrifugal force on the balls. The mill casing 10 is provided with an inlet 9 for carrying and drying air and an outlet 11 for particle bearing air leading to a classifier. The casing also has an inlet shoot 12 for material to be pulverized and an inlet pipe 13 for compressed air which may be heated. For guiding the rings 22, 23 and holding them against rotation, each ring is provided with three equally-spaced radial arms 36, or 37, which pass outwardly through slots 35 in the casing, each arm having at its radial outer end rollers 40, 42 which run on fixed guides 41, 43. The weight of the rings 22, 23 may be varied by adding rings 22a, 23a. In modifications, the loading of the rings on the balls may be varied by means of hydraulic or pneumatic rams or by means of springs. In a further modification, the track is stationary and the loading rings rotated.
Patent GB-256633-A (GB)
Title: Improvements in or relating to processes for applying protective coatings to roads and other surfaces
IPC: E01C7/35
Filed: 1926-08-05
Abstract: 256,633. Baume, G., Chambige, P., and Boutier, D. Aug. 5, 1925, [Convention date]. Surface treatment with liquid materials. - A process for applying a protective coating to roads consists in spreading on the surface an emulsion of bitumen, tar, oils and fats, or rubber, having a critical temperature zone as described in Specification 255,074, [Class 80 (i), Disinfecting &c.], the emulsion being spread at the upper temperature limit so that, when the temperature falls below the critical zone, the emulsion thickens and breaks down, expelling its aqueous constituents and leaving a protective coating. Sand or gravel may be applied to the surface either before or after spreading the emulsion, and the spread emulsion may be rolled and sprayed with water or a saline solution such as sea-salt or calcium chloride, or such spraying may take place before or simultaneously with the spreading of the emulsion.
Patent GB-900261-A (GB)
Title: Improvements relating to rotary tuners
Inventor: KORDA PAUL
IPC: H03J3/00
Filed: 1960-06-01
Abstract: 900,261. Radio receivers switch tuning. FERGUSON RADIO CORPORATION Ltd. April 26, 1961 [June 1, 1960], No. 19454, 60. Class 40 (5). In a rotary tuner the turret of which is driven by an electromagnetic ratchet and pawl type motor, the armature 12, which actuates the pawl 22, is positioned in the field of a smoothing choke 10, 11 in the set and responds to the short-circuiting of the choke by a low-resistance circuit. The armature is biased away from the choke by a spring 15 on an adjusting-screw 17, and a detent 26 prevents anti-clockwise rotation. Layers of nylon 19, 20 are provided to reduce hammer, and contacts 30, which are opened by outward movement of the armature, provide for repeated stepping whilst the shortcircuit is otherwise maintained. A conductive disc 37 having a cut-away portion 40 is coupled with the shaft 25, and rotates to wipe a number of contacts 39 corresponding with turret setting positions. Closure of a switch 42 completes a short-circuit around the choke 11 through the disc 37 which is as a consequence stepped until the cut-away portion 40 reaches the contact 39 corresponding to the switch 42. In a twoposition modification described with reference to Fig. 3 (not shown) the separate selector switches are replaced by a change-over switch, and in a further embodiment a short-circuiting switch is cam-operated.
Patent GB-506699-A (GB)
Title: Improvements in and relating to the utilisation of the exhaust gas energy of aircraft engines for propulsion purposes
IPC: F02K7/00
Filed: 1938-07-01
Abstract: 506,699. Exhaust systems. JUNKERS FLUGZEUG - <SB>UND <SB>MOTORENWERKE AKT.-GES. July 1,1938, No. 19556. Convention date, July 1, 1937. [Class 7 (ii)] [Also in Group XXXIII] The exhaust gases from each cylinder of an aero-engine are discharged into separate pipes each having at its end a nozzle whereby the outlet velocity of the exhaust gas and consequently the reflux propulsive force or impulse is in. creased. When the pressure outside the exhaust pipe during the greater period of the exhaust discharge is greater than the critical pressure, determined by the pressure and velocityin the pipe the nozzle tapers to minimum cross section at the outlet, the taper ratio lying between 0À3 and I. Further the cubic capacity of the exhaust pipe may be between 0À3 and 1 of the swept volume of the working cylinder. When the velocity of flow in the exhaust pipe is super-critical and the external pressure is generally below the critical the nozzle' is given a. convergent-divergent form. If the velocity of flow in the exhaust pipe during a considerable period of the discharge is super-critical the nozzle is given a divergent form. In one constructional form the exhaust, pipes 32f ... 33f ... are arranged as shown in Fig. 8 and in another form, they are surrounded by a cowling 40 having inlet and outlet apertures 42, 41.
Patent GB-1367875-A (GB)
Title: Cathode ray tubes with target screen and the manufacture thereof
IPC: H01J9/227
Filed: 1971-08-09
Abstract: 1367875 Colour cathode-ray tubes D M GOODMAN 9 Aug 1971 19599/74 Divided out of 1366344 Heading H1D In a photo-deposition method of making a colour cathode-ray tube screen, e.g. the beam indexing strips of a beam indexing type tube, a light source is used which comprises a primary source of radiation, such as an ultra-violet lamp 28, and a sheet of scintillator material 29 which is excited by the ultra-violet light to generate optical radiation which is internally reflected in the sheet and emerges from a relatively small exit region 30. A second sheet of sointillator material can surround the first so as to use radiation escaping from the first. In an alternative form, Fig. 8 (not shown), the scintillator is formed as a conical funnel with the exit region at the apex to provide a point source of light. The light source can be used in close contact with the screen as shown in Fig. 5, or it can be used in the position of a conventional light source 28a in conjunction with an optical master 60. A single light source can be used in successive positions across a screen or several sources can be arranged in an array to expose simultaneously a number of strips.
Patent GB-1136733-A (GB)
Title: A method and a preparation for the determination of the enzymic activity of co-comp-nadh, redox enzyme
IPC: C12Q1/32
Filed: 1966-05-04
Abstract: 1,136,733. Determination of carbonyl compound-NADH 2  redox enzyme. CHUGAI SEIYAKU K.K. 4 May, 1966 [11 May, 1965 (2)], No. 19726/66. Heading B1X. The activity of a carbonyl compound -NADH 2  redox enzyme is determined by coupling together a malic dehydrogenase reaction and a carbonyl compound-NADH 2  redox reaction and measuring the amount of oxalacetic acid formed. The mechanism is:-  The oxalacetic acid may be measured using a diazonium salt, for example 4-amino-2, 5-diethoxybenzanilide diazonium chloride. 6-benzamide-4-methoxy-m-toluidine diazonium chloride, tetrazotised o-di-anisidine, optionally with an inorganic metal salt; or by decomposing the oxalacetic acid with a mixture of aniline and citric acid and either measuring the carbon dioxide evolved or reacting the pyruvic acid formed with 2,4-dinitrophenylhydrazine. A typical composition for adding to the test solution comprises a carbonyl compound, NADH 2 , malic acid, malic dehydrogenase, a colour developer agent responsive to oxalacetic acid and a buffer composition to maintain the pH between 7 and 9. Malic acid (or its salt), NADH 2  and the carbonyl compound may be used in molar ratio 300-500: 0.5-2: 30-60. Examples refer to determination of lactic dehydrogenase, α-hydroxybutyric dehydrogenase. Also mentioned are alcohol dehydrogenase, triose phosphate dehydrogenase, glutamic dehydrogenase.
Patent GB-516684-A (GB)
Title: Process for desulphurising iron or iron alloys
IPC: C21C7/064
Filed: 1938-07-04
Abstract: 516,684. Refining iron ; alloys. SACHTLEBEN AKT.-GES. FUR BERGBAU UND CHEMISCHE INDUSTRIE. July 4, 1938, No. 19768. Convention date, Oct. 29, 1937. [Classes 72 and 82 (i)] Iron and iron alloys are desulphurized, with or without the simultaneous removal of other impurities, by treatment with lime in a horizontal rotary or rocking furnace which may be of the type described in Specifications 469,063; or 496,344, [Group XII], the.lime being used in such quantity that a dry, non-fluid slag is formed, in which the lime-silica ratio by weight may be for example 2.5-5:1, the slag being discharged by tilting the furnace after the molten metal has been tapped off. The metal may be charged into the furnace in a molten state, or may be melted and simultaneously refined in the furnace.
Patent GB-883125-A (GB)
Title: Spacer and guide assembly for vertical tubes
IPC: F22G3/00
Filed: 1960-06-07
Abstract: 883,125. Steam superheaters. COMBUSTION ENGINEERING Inc. June 7, 1960 [June 17, 1959], No. 19910/60. Class 123(3) A guide assembly, for maintaining the return bent tubes of each panel of a pendent superheater 14 in accurate alignment and in predetermined relationship while allowing relative axial movement to accommodate differential expansion between adjacent tubes, comprises an arcuate plate member 18 which is secured, e.g. to a tube 20, is received between two arms 22, 24 fixed to an adjacent tube 26, and is formed of upper and lower arcuately offset portions 28, 30 which have ridged portions 19 for welding at 36, 37 to the tube 20 and are interconnected by a weakened portion of reduced section. The arms 24, 22, secured to the pipe 26 by welding 40, have projections 25 which slidingly engage respectively behind the upper and lower plate portions 28, 30, the latter and upper and lower projections 27 on the arms 22 being provided with arcuate faces where they bear upon the surfaces of the respective tubes 26. 20.
Patent GB-182339-A (GB)
Title: Improvements in or relating to electric cables
IPC: G01M3/18
Filed: 1921-07-25
Abstract: 182,339. Lee, L. R. July 25, 1921. Addition to 164,965. Testing; detecting faults.-In a cable, an auxiliary wire or wires D of different metal from the working conductor A and insulated by hygroscopic or permeable material is associated with the conductor A so that, when the conductors A, D are connected at one end through an indicating instrument, a fault due to the penetration of moisture will be indicated by the potential due to the galvanic action set up. When main current is passing through the conductor A, a fall of potential would also be indicated.
Patent GB-183357-A (GB)
Title: Improved means for adding reagents to liquids
IPC: C02F1/68
Filed: 1921-07-25
Abstract: 183,357. Perrett, I. G. July 25, 1921. Moving-chamber apparatus.-In apparatus for adding powders to liquids, particularly for adding a softening re-agent to a domestic water supply, a wheel arranged beneath a powder hopper and provided with measuring pockets for the powder is rotated step by step by means actuated by the passage of the liquid to cause it to deliver the powder from one pocket on each delivery of liquid. As shown, a shaft 8 is oscillated at each discharge of liquid and at each oscillation a pawl on a weighted arm 13 on the shaft acts on a ratchetwheel 15 which, through bevel gearing 16, 17, intermittently rotates a shaft 18 passing down through a powder hopper 19 and provided with an arm 21. This arm causes powder to fall through an orifice 22 in a diaphragm 20 into the lower part of the hopper whence it is fed by arms 23 on the shaft through an elongated orifice on the bottom of the hopper into pockets 25 in a measuring wheel 26 rotated step by step by a toothed wheel 27 on the bottom end of the shaft 18. At each movement of the wheel 26, the powder in a pocket 25 is delivered through an orifice 29 in a plate 28, the delivery preferably being assisted by the depression of a plunger 31 by a cam 33 on the shaft 8 against the action of a spring 32. In an alternative arrangement the shaft 18 may pass outside the hopper and be keyed to the wheel 26 which drives a shaft carrying the arms 21, 23 through the pinion 27.
Patent GB-418967-A (GB)
Title: Improvements in and relating to the fixing of bristles in brush and broom stocks
IPC: A46D3/04
Filed: 1934-07-07
Abstract: 418,967. Stapling. ZAHORANSKY, A., Todtnau, Schwarzwald, Germany. July 7, 1934, No. 20003. Convention date, July 8, 1933. [Class 89 (iii).] A method of fixing bristles consists in placing bundles of bristles nearly in line but with overlapping ends, doubling them at the overlapping parts, and thrusting them by a staple through a nozzle, whereby the short bunches produced by the doubling lie concealed between the long tufts, as in Fig. 4. Staples are bent round a shaper 18, Fig. 7, by shoulders on a plate 17 fixed to tool 3. After the withdrawal of the shaper 18, the plate 17 is moved forwards with the staple and enters a slot 19 in the nozzle 4. Just previous to this, the overlapping ends of two bundles of bristles are carried into the path of the plate from opposite sides, and a notch 18<a>, Fig. 6, compacts these bristles, thus permitting the feeders to engage the bristles near the centre without ill effects due to spreading of the bristles. Two bundles may arrive at the nozzle simultaneously, but it is preferred to make the one in the shallow notch arrive earlier and somewhat offset to the other, whereby the tufts acquire a twist. To ensure that the roots of the tufts are bent inwards and concealed, a nozzle 4, Fig. 9, is employed with a nose 20 and a recess 21 below it. The nose 20 pushes the root tips of one tuft further inwards than the long portion of the other tuft, which is bent in the recess 21 and is thus laid round the bent roots. In a modification for use with tufts without spread or twist, two narrow tufts are fed to the nozzle instead of a flat tuft and these are somewhat inclined to one another so that the two roots are slightly spread apart. The nozzle passage has on one side two opposite noses 20 with a shallow recess 21 so that the roots of the subdivided tuft are bent inwards by the noses and the long portions are laid round them by the recess 21. The long projecting ends are thus all of the same length without trimming.