baber/WOPTO huggingface dataset:
Patent GB-210735-A (GB)
Title: Improvements in processes and apparatus for the treatment of railway and tramway rails
IPC: C21D9/04
Filed: 1923-09-26
Abstract: 210,735. Compagnie des Forges de ChÔtillon, Commentry, et Neuves Maisons. Feb. 2, 1923, [Convention date]. Hardening.-In a process for hardening the parts of steel rails which have been submitted to a local heat treatment, such as welding, the heated parts are cooled by means of streams of liquid, the constant or intermittent delivery of which is suitably regulated, the points of impact of the liquid being continuously or periodically changed so as to produce a uniform cooling of the parts treated and the hardening process stopped before the rail is completely cooled. A water tank 1 is closed at its bottom by a perforated plate 2 of a shape conforming to the flange 3 of the rail, and is provided with a pipe 4 having a valve 5 to regulate the rate of flow and a valve 6 to control the outflow of liquid. The tank 1 is mounted on rollers 10 which rest on the rail and by means of which it is given a to-and-fro motion to change the points of impact of the liquid and to give a uniform cooling. An inner partition 8 having a valve 9 is provided in the tank to prevent the outflow of liquid when the tank is being filled. During the local heat treatment, the rails may be cooled on each side of the parts being heated.
Patent GB-1511834-A (GB)
Title: Pesticide formulation
IPC: A01N25/14
Filed: 1974-05-30
Abstract: A user-friendly pesticidal composition with improved stability is prepared. The active ingredient and the carrier can be selected as desired. First, an intimate mixture of the pesticidal active substance, at least one surfactant and a liquid medium capable of sublimation are frozen. Then, the pressure above the frozen mixture is lowered below the triple point pressure of the liquid medium, and the medium is removed in the form of a gas. The pressure is kept below the pressure at which the medium can be in liquid form.
Patent GB-240487-A (GB)
Title: Process for the production of lustrous filaments, bands, films and the like from viscose
IPC: D01F2/08
Filed: 1925-09-28
Abstract: Cadmium compounds are added to the acid baths used for the precipitation of viscose filaments, films etc.; filaments so precipitated show a high lustre, greater strength and a good covering capacity. Small additions of cadmium compounds are sufficient, and it is possible to spin the finest threads. Examples are given of baths containing cadmium, magnesium and sodium sulphates, and sulphuric acid, with and without glucose; and cadmium and sodium sulphates, and sulphuric acid.
Patent GB-247865-A (GB)
Title: Improvements in filters for air or gas
IPC: B01D46/00
Filed: 1925-09-28
Abstract: 247,865. Hadley, A. Sept. 28, 1925. Filtering. - An air &c. filter comprises cotton-wool &c. contained in a transparent chamber a and divided by horizontal perforated plates e.
Patent GB-219533-A (GB)
Title: Card punching machine
IPC: D03C17/00
Filed: 1923-09-28
Abstract: 219,533. Gault, J. H. Sept. 28, 1923. Cards, punching. - The punches 2, Fig. 1, in the punching head 1 of a machine for perforating jacquard cards are controlled by locking-keys 3, key-rods 4 and levers 5 connected to the armatures 6, Figs. 1 and 3, of magnets 7 mounted in groups in drawers 8 slidable in grooves in standards 9 on a stepped side beam 10, the levers 5 being in duplicate sets. The solenoid magnets are arranged in parallel rows. One terminal of each solenoid wire is grounded in the frame and the other is soldered to a terminal 15<a> in an insulated side of the drawer. When the drawers are in position, plug holes in the terminals 15<a> come opposite to and in line with plug holes in terminals 15 in an insulating panel in the machine side, so that the terminals 15, 15<a> may be connected by placing contacts 35, Fig. 7, in the plug holes. The terminals 15 are connected by wires to binding posts 19 and thence to spring-controlled contact-pieces or plungers or needles 38 in metal tubes in an insulating box 36. A square conductive prism carrying non-conductive master cards laced together, is oscillated to and from the box, and the cards 41 are pressed against the contacts some of which pass through the perforations in the cards and contact with the prism, so that certain magnets are energized and the corresponding punches 2 are locked to punch the required holes in the blank 42. The prism is rotated a quarter of a revolution after each oscillation. After each punching operation, the punches are unlocked and the keys 3 and levers 5 are returned to normal position by rods 22 on frames 20 oscillated by cam-controlled lever mechanism. The levers 5 are mounted on supports 11 arranged as shown. The contacts 38 may be manually operated, the operative touching selected ones with a metal rod connected electrically with the machine. A master card may thus be punched. To vary the punching, two or more plugs may be connected by flexible conductors 45, or a plug may be inserted not deep enough to reach through to the terminal 15<a>, or an insulated plug as shown in Fig. 8 may bo used, which is insulated from the contact in the hole in which it is inserted, but is connected through a flexible conductor to another contact. Specifications 16825/98, 21564/01 ; 10327/02, [Class 31, Cutting, &c.] ; 25749/02, and 15226/09 are referred to.
Patent GB-658383-A (GB)
Title: Improvements in and relating to electric switches for controlling the temperature of heating pads, blankets and the like
IPC: H01H21/08
Filed: 1949-09-21
Abstract: 658,383. Regulating switches. BRITISH THOMSON-HOUSTON CO., Ltd. Sept. 21, 1949, No. 24265. Convention date, Oct. 1, 1948. [Class 38(v)] A waterproof switch for controlling the temperature of a heating pad and adapted to be built into 'the corner thereof comprises a plate 3 carrying contacts 5 connected to the heaters, -a shaft 8 carrying a contact arm 10 adapted to sweep over 'the contacts, a waterproof envelope 22 of rubber or like 'material enclosing the plate and having an aperture through which the shaft 8 projects, an operating handle 24 secured to the shaft outside the envelope, sealing means round the shaft to prevent entrance of moisture and a housing 25 round the switch and part of the envelope 22 and 'provided with a slot 35 through which the handle projects. The plate 3 is secured to the housing 25 by means of two studs 29 passing through holes in the plate and 'having -threaded' apertures for receiving screws 30, Fig. 5. The screws 30 have snap ends head 33 for receiving snap buttons 34 on the heating pad cover. The plate 3 carries projections 4 between the contacts 5 to determine the switch positions and one of the contacts may have a spring 14a attached to it so that the contact arm 10 'can convey current simultaneously to two adjacent contacts.
Patent GB-1396921-A (GB)
Title: Tap changer
IPC: H01H25/06
Filed: 1972-05-23
Abstract: 1396921 Tap changer HAKKO ELECTRIC CO Ltd 23 May 1972 24314/72 Heading H1N A transformer tap changer, has tap contacts 32 arranged in a row on an insulated base 2, and a single fixed strip contact 31 arranged adjacent the tap contact row so that the strip and a chosen tap contact may be bridged by a bridging contact 33 (Fig. 5) secured to an insulated carrier 34, A contact carrying framework 20 which supports the carrier 34 against the action of a contact pressure spring 26 when the contacts are open is vertically movable by a toggle linkage (28, 16) with respect to a support member 10, the support member being mounted on guide rails 9, 8 formed integrally with the housing back plate 7 for sliding motion of the member 10, to move the framework along the tap contact row when the bridging contact is raised. The toggle mechanism also imparts to the bridge member a sliding movement (as indicated Fig. 4, after the bridge has been fully lowered, to clean the contacts, the motion being transmitted via the spring 26, the framework 20 being disengaged from the carrier 34 in this position. A plate 38 acts to equalize contact pressure on the tap 8 strip contact.
Patent GB-466869-A (GB)
Title: Improvements relating to turbo-mechanical transmission gear
IPC: F16H47/10
Filed: 1935-08-30
Abstract: 466,869. Hydro-mechanical variable speed gearing. FOTTINGER, H. Aug. 30, 1935, No. 24328. Void. Convention date, March 15. [Class 80 (ii)] A planetary train A in front of a turbogear, divides the power to the turbo-gear, which consists of a coupling B and a converter C. The power from a shaft 1 passes in part to a sun gear 4 and thence through a shaft 6 to the pump element 7 of the coupling B and also to the pump element 7a of the converter C. The power passes in part to a toothed annulus 5, and thence to the turbine element 8 of the coupling B and beyond that through a sleeve 11 and through connected turbine elements 8a, 8b of the converter to an ultimately driven shaft 2. The reaction element 9 of the converter may be held by a brake 10 or allowed to run free.
Patent GB-715933-A (GB)
Title: Improvements in or relating to synthetic lubricants
IPC: C10M169/00
Filed: 1952-09-29
Abstract: The invention comprises C4 to C10 saturated aliphatic monocarboxylic acid polyesters of polyhydric alcohols having the formula <FORM:0715933/IV (b)/1> in which R is -CH2OH or an alkyl group containing from 1 to 6 carbon atoms, the alcohol being completely esterified.  In addition to pentaerythritol the alcohol may be, for example, trimethylol ethane, propane, butane, pentane, hexane or heptane. The monobasic acids used to esterify the alcohols are, for example, n-butyric, isobutyric, n-valeric, isovaleric, 2-ethylbutyric, caproic, n-heptylic, n-octanoic, 2-ethylhexoic, pelargonic, capric and C6 to C10 Oxo acids.  The esters are made by standard processes.  In an example octanoic acid is esterified with trimethylol propane in the presence of toluene.  It is stated that when branched chain acids are esterified some NaHSO4 is used as catalyst.  The esters formed are used as lubricants.ALSO:A synthetic lubricant comprises an ester formed from a C4 to C10 saturated aliphatic monocarboxylic acid poly ester of a polyhydric alcohol having the formula: <FORM:0715933/III/1> in which R is CH2OH or an alkyl group containing from 1 to 6 carbon atoms, the alcohol being completely esterified. Particular esters mentioned are trimethylol propane tri-n-octanoate and pentacrythritol tetracaproate.  The esters may be used directly as lubricants or may be blended with other lubricants such as mineral oils or other synthetic lubricants. Viscosity index improves, pour point depressors, oxidation inhibitors, detergents extreme pressure agents, corrosion resisting agents or rust inhibitors may also be added to the esters.
Patent GB-356904-A (GB)
Title: Improvements relating to cathode beam oscillographs
IPC: H01J31/12
Filed: 1930-08-14
Abstract: 356,904. Oscillographs. ASSOCIATED ELECTRICAL INDUSTRIES, Ltd., Bush House, Aldwych, London.-(Assignees. of Opsahl, A. M. ; 311, Pennwood Avenue, Wilkinsburg, Pennsylvania, U.S.A.) Aug. 14, 1930, No. 24399. Convention date, Aug. 14, 1929. [Class 37.] In a cathode-ray oscillograph in which the beam is normally inter cepted by a target around which it i deflected so as to reach a receiving surface in response to the occurrence of the phenomenon to be observed or recorded, a baffle is disposed near the path of the beam and a pair o: oppositely-acting deflecting device: are arranged one in front of and the other behind the baffle, the first device deflecting the beam towards the baffle so that the slower moving electrons are intercepted by the baffle, while the faster moving elec trons move past the baffle and are deflected by the second device towards the target. The baffle 39 consists of a rectangular plate mounted betweer two pairs of deflecting plates 32, 35 secured to two insulating strips 30 which are supported inside the upper section of metal tube by insulating rings or discs 31. A third pair of deflecting plates 36 causes the faster moving electrons to move into a path in line with their original path through an aperture in the lower disc 31 into a lower tube containing deflecting plates 17, 18, a target 22, a perforated shield 24, timing plates 26, and a photographic plate 3 or film. A concentration coil 25 is mounted around the shield 24. The tube may be used for recording surges in transmission lines, Fig. 3 (not shown). Specification 295,321, [Class 37, Electricity, Measuring &c.], is referred to.
Patent GB-977981-A (GB)
Title: Electrical connector units for use with printed circuit boards
IPC: H01R24/00
Filed: 1961-07-06
Abstract: 977,981. Two-part couplings. W. S. CATOR. July 5, 1962 [July 6, 1961], No. 24415/61. Heading H2E. A connector unit for a printed circuit board consists of an insulating block 1 recessed at 2 to receive the printed circuit board 3 and containing a plurality of contacts 4, each contact 4 having an integral terminal portion 4b and each contact 4 being retrained by an individual locking piece 17 which is initially separate from the contact. Protrusion 14 on terminal portion 4b is pressed by locking piece 17 into engagement with a shoulder 13. Locking piece 17 is retained by loop 15 on terminal portion 4b which serves for connecting wires to it. Piece 17 may also be retained by soldering to and/or being secured with wire to terminal portion 4b. The block 1 has mounting flanges 1a. Contacts 4 which are resilient lie in cavities opening into recess 2 formed by integral ribs 5. In another embodiment (Fig. 5, not shown) only one half of contact 4 is provided. Specification 977,982 is referred to.
Patent GB-425041-A (GB)
Title: Manufacture of basic triphenylmethane dyestuffs soluble in water
IPC: C09B11/20
Filed: 1933-09-04
Abstract: 425,041. Dyes. I. G. FARBENINDUSTRIE AKT. - GES., Frankfort - on - Main, Germany. Sept. 4, 1933, No. 24473. Convention date, Sept. 3, 1932. [Class 2 (iii)] Basic triphenylmethane dyes soluble in water are made by condensing a tetra-hydroxyalkylated substituted or unsubstituted p : p<1>- diaminobenzophenone with a p-alkoxydiphenylamine or a p-alkyldiphenylamine or by exchanging in a tetra-hydroxyalkylated p : p<1>- diaminotriphenylmethane dyestuff containing in p-position to the carbinol carbon atom a halogen atom, an alkoxy group, a sulpho-group or an amino group, the said atom or group for a residue of a p-alkoxyphenylamine or a p-alkylphenylamine. They yield bright shades fast to light. In examples: (1) the leucocompound obtained by sulphuric acid condensation of dihydroxyethylaniline with pchlorobenzaldehyde is oxidized with lead peroxide and the product condensed with p-phenetidine (blue on wool, silk and tanninmordanted cotton) ; (2) p : p<1>-tetrahydroxyethyldiaminobenzophenone is condensed with 4-ethoxydiphenylamine in presence of phosphorus oxychloride (properties same as (1)) ; (3) and (4) p-chlorbenzaldehyde is condensed with dihydroxyethyl - m - toluidine and the oxidized leuco-compound is melted with p-toluidine or p-phenetidine (greenish blue) ; (5) the oxidized leuco-product from p-sulphobenzaldehyde and dihydroxyethyl - m - chlor - aniline is condensed with p-phenetidine (greenish blue) ; (6) the oxidized leuco-compound from p-methoxybenzaldehyde and dihydroxyethyl - m - toluidine is melted with p-phenetidine. Specification 275,609, [Class 2 (iii)], is referred to. Tetrahydroxyalkyl - diaminobenzophenones are made by the action of an alkylene oxide on the appropriate substituted or unsubstituted diaminobenzophenone.
Patent GB-807071-A (GB)
Title: Improvements in or relating to gas compressing plant
Inventor: CLARK NEIL MILLIGAN
IPC: F04D27/02
Filed: 1955-08-26
Abstract: 807,071. Centrifugal compressors; gas turbine plant POWER JETS (RESEARCH & DEVELOPMENT) Ltd. Aug. 3, 1956 [Aug. 26, 1955], No. 24552/55. Addition to 774,391. Classes 110 (1) and 110 (3). [Also in Group XXIX] A compressor plant comprises separate low and high-pressure compressors connected in series and driven by separate turbines, the low-pressure compressor also supplying gas to the turbines by way of a heating system, and surging is prevented by a by-pass at the outlet of the high-pressure compressor, the by-pass valve being controlled by a pneumatic differential relay responsive to two gas pressures sensed by tappings at the high-pressure compressor. In the gas turbine plant described in the parent Specification, wherein the output from a lowpressure centrifugal air compressor is divided, part of it going through a two-stage highpressure centrifugal air compressor to the output and part directly to the combustion chamber and from there to the two separate turbines which separately drive the compressors; the surge-preventing by-pass valve 17, Fig. 4, is actuated pneumatically instead of hydraulically. The high-pressure compressor runs at a constant governor-controlled speed. Pressure tappings 28, 29 at the inlet and throat of a venturi flow meter situated at the intake or delivery of the high-pressure compressor communicate with corrugated diaphragms or, as shown, bellows 32, 33 of differing diameters, connected in opposition to a lever 40 pivoted about a fulcrum 41. A valve 37 carried by the lever 40 throttles the escape of air through a nozzle at the end of a pipe 38. Variations in the leak-off result in corresponding variations in the pressure in an air supply pipe 21 downstream of a restriction 39. This pressure is applied to a diaphragm 44 to operate the by-pass valve 17. A device 35 can alter the pressure to provide compensation for temperature variations sensed at 36. At normal rates of flow, the venturi is partly bypassed by a valve 31 which lifts at a load value just above the operating range of the surgepreventing control. The pipe 21 is connected to the outlet of the low-pressure compressor, and may incorporate a cooler. The venturi may be omitted, the flow measuring tappings then being taken from static points in an outlet duct wall or from a yawmeter. The yawmeter tapping points may comprise sensing holes 26, 27, Fig. 2, in small diameter tubes 25 in the leading edges of separate diffuser vanes 24 of the second-stage high-pressure compressor. The tubes 25 are adjustable to bring the holes 26, 27 to the required positions. A number of such pairs of holes may be disposed around the circumference of the compressor. A second and larger pneumatic relay may be interposed between the pneumatic relay and the by-pass valve 17. Mechanical or pneumatic feedback may be used.
Patent GB-1219770-A (GB)
Title: Improvements in or relating to variable attenuators
Inventor: CROSS JOHN ERNEST
IPC: H03G1/00
Filed: 1967-05-26
Abstract: 1,219,770. Variable attenuators. PLESSEY CO. Ltd. 29 April, 1968 [26 May, 1967], No. 24633/67. Heading H3T. Variable attenuator circuit, e.g. for an a.g.c. circuit, comprises a pi-network including pin diodes 1, 2 and 3, supplied with a control voltage from terminal HT which can be varied to differentially vary the impedance of diode 1 relative the impedance of diodes 2 and 3. A small negative bias voltage is applied to terminal 4 to ensure that all the diodes are not cut off at the same time when the control voltage changes through earth potential, and the diode 8 equalizes the loading on the control line between the state where only the single series diode is conducting and the state where the two shunt diodes are conducting. Chokers 5,9 and 11 isolate the control circuit from the A.C. signal.
Patent GB-1463973-A (GB)
Title: Optical systems for datum establishment
IPC: E01C19/00
Filed: 1973-05-23
Abstract: 1463973 Levelling railway track BRITISH RAILWAYS BOARD 10 May 1974 [23 May 1973 12 July 1973] 24637/73 and 33238/73 Heading B7N [Also in Divisions E1 and G3] An optical system mounted on a vehicle to establish a datum level in relation to a road or railway surface comprises a support 11 pivoting about a horizontal axis X-X and carrying a light emitter 13 and receiver 14, 15 whose optical axes intersect at a point A, the support being coupled to an actuator 8 and thus displaced so that point A lies on the road or rail surface and a predetermined optical triangle ABC is established to form a reference plane. Figs. 4, 5 show a railway track levelling machine 1 standing on a portion of track S which has already been levelled, the point A being on unlevelled track but sufficiently far away for any level error thus introduced to be negligible. The actuator 8 is a hydraulic track lifter coupled to the support 11 by a post 12 and controlled by a unit 10 to raise the track while the ballast is tamped by units 9. The receiver 15 has an image receiving surface 16 and the track is raised until the image of the point on the track surface lies at C, that point then being point A. The system may use a laser beam or white or monochromatic light, and the receiver may alternatively be a sighting telescope. A dual system using two emitters or a single emitter and a beam splitter may be used to give images of points (A<SP>1</SP>, A<SP>11</SP>, Fig. 6, not shown), on both rails, allowing cross-fall of the track, e.g. at curves, to be taken into account. An arrangement in which the support 11 can also be pivoted about a vertical axis when the point A lies on a curve of the track is also briefly described (Figs. 7, 8, not shown). The arrangement may also be coupled to a conventional wire datum system, one end of the datum wire (43, Fig. 9, not shown) being adjusted in height by a tower (44, 45) in accordance with the average of the recent, e.g. the last ten, outputs of the optical system.
Patent GB-256085-A (GB)
Title: Method of and means for rough cutting a propeller blade or other body of variable section
IPC: B23Q35/10
Filed: 1925-10-03
Abstract: 256,085. J÷rgensen, O. J. Oct. 3, 1925. Saw guides.-In a rough cutting operation on propeller blades or other bodies of irregular outline, a number of narrow grooves are cut under the guidance of templets 5 removably clamped to the work support 10. The saw carries an adjustable stop 7.
Patent GB-532369-A (GB)
Title: Improvements in kites
IPC: F41H11/04
Filed: 1939-08-28
Abstract: 532,369. Aerial warfare. RYNER, A. Aug. 28, 1939, Nos. 24691, 27078 and 28387. [Class 9 (ii)] [Also in Group XXXIII] Kites (see Group XXXIII) may be attached to barrage balloons to cause them to fly at a greater height, or they may be drawn by vehicles or ships. As shown in Fig. 3, a barrage comprises eight kites 19 connected in pairs to four kites 20 in turn connected to kites 21 and a kite 22 carrying the anchoring rope 23 from a drum 27. Cords 24 attached to the kites are provided on which explosive discs, bombs, lights, leaflets &c. are carried by the wind to engage trigger-releasing devices 25.