baber/WOPTO huggingface dataset:
Patent GB-732540-A (GB)
Title: Improvements relating to the switching of an electric indicator lamp by a pedal operated braking system of a road vehicle
IPC: H01H13/16
Filed: 1951-12-15
Abstract: 732,540. Retractive switches. LEEDAM, C. Dec. 11, 1952 [Dec. 15, 1951; March 15, 1952], Nos. 29410/51 and 6764/52. Class 38 (5). [Also in Group XXXVIII] A switch for energizing a " stop " light 10 on a vehicle provided with a pedal-operated braking system comprises a rubber cap 4 adapted to fit over the pedal 3 and containing electrical contacts arranged to be closed by light foot pressure on the face of the cap 4 preliminary to braking. The cap 4 has an inwardly turned boundary flange 5 which retains the cap on the pedal 3 yet permits the cap to move relative to the pedal. A contact plate 6 is insulated from the pedal 3 by a separator sheet 12 and carries a spring 14 serving to urge a movable plate 7, and hence the cap 4, away from the pedal 3 such that the flange 5 engages the back of the pedal as shown. Wiring 9 passes through the cap 4, one wire being connected to the plate 6 by means of spring 14 and another wire being connected to several contact points 13 on the movable plate 7 (see also Fig. 4, not shown). Three modifications are described. In the embodiment of Fig. 5 (not shown), a central rubber plug takes the place of spring 14 and connection to the plate 6 is made via the pedal 3 by omitting the insulating backing sheet 12 and turning the edges of the plate 6 over the edge of the pedal. The embodiment of Fig. 6 (not shown), further omits plate 6 and utilizes the pedal 3 itself as the back contact. The third modification (Fig. 7, not shown), also uses the pedal as the back contact but has a spring to urge plate 7 away therefrom, the plate 7 having a central aperture through which the spring is located in a recess in the cap 4.
Patent GB-603926-A (GB)
Title: Electric fires
IPC: F24C7/06
Filed: 1945-11-06
Abstract: 603,926. Electric fires. CATON, H. F. P.. and PRITTY. G. N. Nov. 6, 1945, No. 29448. [Class 39(iii)] An .electric fire comprises a casing 12 having an elongated opening 17 centrally disposed at the front, heating elements 20 parallel to the greater axis of the opening and offset from the centre to lie within the casing, and a dual reflector 21 having a ridge 23 lying on the greater axis of the opening. The reflector consists of parabolic portions 21 surrounding the heaters and curved parts 22 terminating in the ridge 23. The casing is circular in front section, and has ridges 15 to improve the appearance, In modifications, the casing is rectangular, and shaped to fit into the corner of a room, or the elements and central ridge of the reflector each lie in a horizontal plane. Specification 388,867 is referred to.
Patent GB-1511974-A (GB)
Title: Haymaking or like machine
IPC: A01D78/10
Filed: 1976-07-15
Abstract: 1511974 Haymaking machines J A FREUDENDAHL 15 July 1976 [24 July 1975] 29481/76 Heading A1F A haymaking machine comprises at least one pair of contra - rotating rake heads 4 carried by a cross - beam 3, and a pair of rollers 14 which are mounted behind the rake heads and are each rotated in the same sense as the associated rake head, the rollers assisting in the formation of a swath, the width of which is determined by the distance between the rollers. In order to adjust the swath width the rollers 14 are carried by booms 11 pivoted at 10 to the cross-beam 3 and being fixed in selected positions by bars 12 engaging selected holes in the crossbeam and the booms. The axes of the rollers are slightly inclined to the vertical and the rollers are driven by engagement with the ground at 17.
Patent GB-172820-A (GB)
Title: Improvements in flat drills
IPC: B23B51/00
Filed: 1920-10-19
Abstract: 172,820. Raadt, P. A. van den. Oct. 19, 1920. Drills.-Flat drills are made of steel rolled substantially to the profile shown in Fig. 3, in which the cutting-faces A<1> C, F<1> H are concave. Longitudinal flutes A<1> A<2>, F<1> F<2> are provided and the cutting-edges of the drill may be lipped as at S, Fig. 2. The concavity of the cutting- faces may diminish towards the drill point, so that an approximately straight cutting-edge is obtained.
Patent GB-900624-A (GB)
Title: Improvements in or relating to programmed electric positional control systems
IPC: G05B19/40
Filed: 1958-09-16
Abstract: 900,624. Electric copying-machines. MICRO PATH Inc. Sept. 16, 1958 [Sept. 23, 1957], No. 29606/58. Class 38 (6). [Also in Groups XXXV and XL (c)] Movements of the work-table of an unspecified machine-tool are controlled along two axes (the possibility of a third axis is mentioned) by incremental pulses recorded on a magnetic tape. For each axis the pulses are converted to rotary motion by a stepping motor which rotates the appropriate lead-screw through an electrical follow-up servo system. Considering one axis only (as the other axis is merely a duplicate) the magnetic tape (not shown) carries two sets of incremental pulses, one for forward motion and one for reverse. These two channels are read by tape heads H1, H2 whose sinusoidal outputs are amplified and converted to unidirectional square pulses in a pair of circuits 104, 106 (see Group XL (c)). The pulses are applied through gates 120 ... 126 and 128 ... 134 to control two bistable multivibrators 108, 112, and 110, 114 (see Group XL (c)), the 4 outputs of which energize pairs of stator windings of a stepping motor 150 (see Group XXXV). The outputs of the multi-vibrators also control the biasing of the gates and are so arranged that consecutive pulses from one channel change over the two multivibrators alternately, whereas the first pulse from the other channel changes back the multi-vibrator that had last been switched. Hence for movement of the motor 150 in either direction, one pair of stator coils remain energized, the pair on the appropriate side are deenergized and the pair on the other side become energized, and the rotor moves back or forward by one rotor tooth each time a pulse is read off the magnetic tape. Rotation of the motor 150 is converted by a screw-and-nut into linear motion of a magnetic core 200 which varies the linkage between a primary winding 204 and opposed secondaries 202 to provide an A.C. error signal of variable magnitude and reversible phase to control a motor 38 which positions the work-table. The core 200 is repositioned by a follow-up link from the motor 38. The motor 38 is stated to be energized from a push-pull pair of valves controlled by the amplified output of the transformer 202 via a square wave pushpull modulator. Specifications 900,623 and 900,634 are referred to.
Patent GB-802298-A (GB)
Title: Improved bonding properties of steel surfaces
IPC: B05D3/10
Filed: 1956-09-28
Abstract: Mild steel surfaces are treated, to improve their bonding properties, with a solution consisting of, by weight, H2O 20-65 per cent, H2O2 5-30 per cent, and H3PO4 and/or H2SO4 25-70 per cent. Surface-active agents such as aryl-alkyl sulphonates or sulphonated higher fatty alcohols may be added to the solution. The treated surfaces are stated to be well suited to receive coatings of lacquer, paint, resin, rubber and metal.
Patent GB-823420-A (GB)
Title: Titanium-vanadium-aluminium alloys
IPC: C22C14/00
Filed: 1956-09-28
Abstract: A rolled heat-treated titanium-base alloy sheet has a composition within the following range in per cent by weight. .V.14.0-16.0 .Al.2.0-3.5 .Ti.and impurities the remainder  The impurities may include .C.up to 0.06 .N.up to 0.03 .O.up to 0.15 .H.up to 0.19  The product, in the solution treated condition, has a ratio of yield strength to ultimate tensile strength of 0.4 to 0.9, an ultimate tensile strength less than 120,000 lbs. per sq. in., elongation over 15% and uniform elongation over 10%.  The alloy may be solution treated in the beta or alpha-beta field and aged, e.g. at 900 DEG F. to give an ultimate tensile strength of 150,000-200,000 lbs. per sq. in.  The alloy may be formed by melting titanium by electric arc in a water-cooled copper-crucible in vacuum or an inert atmosphere, the alloying elements being added to the melt individually or as a vanadium-aluminium alloy.
Patent GB-909231-A (GB)
Title: Improvements in or relating to apparatus suitable for automatically controlling a retarder in a hump yard
Inventor: GROSE BASIL HUBERT
IPC: B61K7/12
Filed: 1958-09-07
Abstract: 909,231. Radar. WESTINGHOUSE BRAKE & SIGNAL CO. Ltd. Sept. 8, 1959 [Sept. 17, 1958], No. 29743/58. Class 40 (7). [Also in Group XXX] Railway vehicle speed control apparatus includes first means for comparing signals representing the speeds of a vehicle at the beginning and end of a predetermined interval of time to produce a difference signal and second means for comparing this difference signal with a reference signal to produce a signal indicative of the resistance to rolling of the vehicle. A voltage representing the velocity of a cut of wagons, obtained by reflected R.F. signals, is supplied to terminal 10 and through one path via amplifier 11 where it undergoes a sign reversal, to a storage amplifier 13 to charge a condenser C1, and through another path direct to a summing amplifier 14. A voltage dependent on the gradient of the measuring track section is also applied to amplifier 14 from a potentiometer P1. When the cut approaches the track section, a relay R1P is energized via terminal 16 to close contacts R1P1, R1P2, and when the first axle reaches the beginning of the track section, relay ST is energized via terminal 17 to close holding contact ST1 and contact ST2 to energize relay H and actuate contacts H1, H2, H3. Opening of contact H3 initiates charging of the control electrode of timing device V1 from a stabilized H.T. input 18, a resistor R1 and capacitor C2 ensuring that the build up of charge is such that the device fires after 1 sec. this firing energizes relay TM to close holding contact TM2 and contact TM1 to operate a further storage amplifier via terminal 19 to store the output of amplifier 14 extant at the firing of device V1, the voltage representing the difference between the grade and the actual acceleration being stored for use in a rollability discriminator. When cut leaves the measuring section, relay R1P releases with the consequential release of relays ST, TM and H to reset amplifier 13. With reference to the drawing of the Provisional Specification, the speed measured by R.F. unit 1 is converted to a voltage in meter 3 and applied via contact 4 of relay 5 to a sign reversing amplifier 6 and a storage amplifier 7 connected to a summing amplifier 8. When a cut enters the track section relay 5 opens contact 4 and closes contact 4a to supply the output of meter 3 to amplifier 8 which is also supplied with voltage g corresponding to the section gradient. When relay 5 is operated a timing device is energized to close contact 9 after one second with the resulting operation of summing amplifier 8 whose output is fed to a further storage amplifier.
Patent GB-1085463-A (GB)
Title: Improvements relating to spinning and twisting machines
Inventor: MACKIE JOHN KAY PRINGLE
IPC: D01H7/20
Filed: 1963-07-26
Abstract: 1,085,463. Lubricating spinning spindles. JAMES MACKIE & SONS Ltd. July 9, 1964 [July 26, 1963], No. 29762/63. Heading DID. A stationary spindle assembly for supporting a bobbin carrier 2 on a spinning &c. machine comprises a base 1 shaped to constitute an oil reservoir 15, and a stationary spindle 11 mounted in a seating 12 on the base and in which a longitudinal bore 14 for lubricating- oil extends down the spindle to the point of entry of the spindle into the seating, while a passage connecting the bore with the reservoir is located beneath the said point. This ronstruction aims to avoid the drawback of existing arrangements where the connecting passage is located just above the point 'when. the spindle enters the seating, and gives rise to fracture of the spindle owing to metal fatigue. A helical passage 3 is provided in the carrier or in the spindle. The spindle has an axial bore 14 and there is a closure 6, while the spindle is supported in the seating by a cap nut 18 on a threaded part 17, a washer 21 being provided. The passage connecting the bore with the reservoir is constituted by an extension of the bore to the bottom of the spindle, annular spaces 19, 22, passages 20 in the nut, and passages 25 in the seating part of the reservoir, the annular space 22 obviating the need for the passages 20, 25 to register. In operation, as the carrier rotates, oil is drawn out of the reservoir by the passage 13 and returns by the bore 14. In other forms, (a) the nut is replaced by a conventional one which is surrounded by a casing screwed on to the lower part of the reservoir and constituting an extension thereof, the bore being extended to the bottom of the spindle within the seating into the extension, while passages in the seating connect the two parts of the reservoir, (b) the bore stops short in the part of the spindle fitted in the seating and is connected to passages in the seating which lead to the reservoir by a radial bore.
Patent GB-454468-A (GB)
Title: Improvements in or relating to alloys of magnesium and aluminium
IPC: F26B17/28
Filed: 1935-10-29
Abstract: In a method of making magnesium-aluminium alloys, magnesium, the combustibility of which has been reduced by the removal of oxides, nitrides, chlorides, fluorides, and carbon compounds, is melted without a flux, and added in the molten state to molten aluminium. The refining of the magnesium may be effected by means of hydrogen peroxide and hydrogen.  Alloys containing 42-54 per cent of magnesium may be so made, and may be employed as preliminary alloys for the production of magnesium-aluminium alloys of other compositions.  Such alloys may contain also 0,2-0,6 per cent of iron.  The Specification as open to inspection under Sect. 91 describes also the refinement of magnesium with the aid of a flux containing chlorides and fluorides of magnesium and of alkali metals and also higher oxygen compounds of manganese, and it refers also to U.S.A. Specification 1,989,456. This subject-matter does not appear in the Specification as accepted.
Patent GB-504337-A (GB)
Title: A process for the manufacture of an aldol condensation product from carbonyl compounds
IPC: C07C45/72
Filed: 1938-05-31
Abstract: 504,337. Aldol condensation catalysts. NAAMLOOZE VENNOOTSCHAP DE BAT. AAFSCHE PETROLEUM MAATSCHAPPIJ. May 31, 1938, No. 29866. Convention date, June 12, 1937. Divided out of 502,450, [Group IV]. [Class 1 (i)] [Also in Group IV] Granular catalysts for the production of aldol condensation products, particularly diacetone alcohol from acetone, comprise a basic compound such as a basic hydroxide, oxide, carbonate or oxychloride of a metal of group two of the periodic table or of copper, lead, aluminium, manganese, iron or tin and a basic binder for the particles thereof which is sub. stantially. insoluble in the starting material under the conditions of the reaction. The catalyst may be produced by mixing hydrated lime, Portland cement, kieselguhr, sodium hydroxide and water into a paste and granulating. The cement may be replaced by sodium silicate, borax, sodium carbonate, silica, &c. Small amounts of powdered metals may be introduced to increase the heat conductivity. The catalysts are reactivated by treating with warm'water and removing the water at below 100‹ C.
Patent GB-1272518-A (GB)
Title: Method and article for color television tube screen and mask production
IPC: H01J9/227
Filed: 1970-06-19
Abstract: 1,272,518. Etching. R.C.A. CORPORATION. 19 June, 1970. [19 June, 1969], No. 29875/70. Heading B6J. An apertured mask for use in forming a screen for a colour television tube, comprising a thin sheet of metal having a pattern of apertures therethrough and a metal layer fixed to one surface of the sheet and having a pattern of smaller apertures therethrough aligned with the apertures in the sheet, whereby phosphor deposits of a size defined by the smaller apertures can be produced on the plate which is to constitute the screen by passing light through the apertures, so formed by a method comprising coating one surface of a metal sheet with a metal layer having a pattern of apertures therethrough, coating the opposite face of the sheet with a film of resist having a pattern of apertures therethrough aligned with and of the same size as the apertures in the layer, etching away the portions of the sheet exposed through the apertures in the layer and the film so as to produce apertures in the sheet which, because of lateral etching action, are longer than those in the layer, and removing the resist film. The layer is of a metal not substantially affected by the etchant. In one method of applying the perforated metal layer, a pattern of deposits of photosensitive material is photographically deposited on the sheet in the area of the required apertures and the metal layer is then applied to the unprotected parts of the sheet surface by plating. The deposits are removed with a solvent, leaving the perforated layer. In another method of applying the perforated metal layer, a continuous metal layer is applied to the sheet and there is photographically formed on the layer an apertured film of a resist material, through the apertures in which the apertures in the metal layer are formed by electrolytic etching. The layer should be less than one fifth as thick as the sheet. The sheet may be of iron or steel and the layer of nickel, nickel-phosphorus alloy, copper, chromium, cobalt, copper-nickel or cobalt-nickel alloy. The solvent may be sodium hydroxide. The etchant may be ferric chloride. After the screen has been prepared, the metal layer is removed from the mask, and the apertured metal sheet is used as a permanent electrode mask in the operation of the tube.
Patent GB-339404-A (GB)
Title: Improvements in connection with mirrors
IPC: A47G1/04
Filed: 1929-10-03
Abstract: 339,404. Loring, F. H. Oct. 3, 1929. Mirrors.-Toilet mirrors are provided with sliding mountings at each side having plain or roller slides so that the mirror 1 can be moved bodily forward. The guides can be in the form of rails 5 projecting from the wall, or supported by standards 13 carried by a washbasin 14, or may be formed as guide rails running from back to front on the top of a dressing table or like article of furniture. The standards 13 or the wall-plate carrying the rails 5 may have combined therewith a support for an electric lamp 10.
Patent GB-738575-A (GB)
Title: Improvements in or relating to printed circuits
Inventor: LENO JOHN ALBERT
IPC: H05K3/24
Filed: 1951-12-21
Abstract: 738,575. Printed circuits. STANDARD TELEPHONES & CABLES, Ltd. Dec. 12, 1952 [Dec. 21, 1951], No. 30008/51. Addition to 718,811. Drawings to Specification. Class 36. The conductivity of part or all of the tracks of a circuit printed on organdie according to the method disclosed in the parent Specification is increased by depositing good-conducting metal thereon by electrodeposition. Where two parts of a circuit on the same or different sheets of organdie are required to be joined they may be brought into contact, the conducting metal then being deposited to make electrical connection between -the two parts. The circuit may be attached to the surface of a sheet of insulating material, or embedded between two sheets of insulating material by an adhesive, by the application of heat and pressure or by softening the surface of the insulation with a solvent and then laying on or pressing in the circuit. Alternatively the circuit may be laid in a mould, which may contain a layer of thermosetting material, and which is then filled with thermosetting material and subjected to heat and pressure to cure the thermosetting material as disclosed in Specification 738,265.
Patent GB-203230-A (GB)
Title: Improvements in or relating to manhole covers and the like and frames therefor
IPC: E02D29/14
Filed: 1922-11-04
Abstract: 203,230. Needham & Sons, Ltd., J., and Needham, W. Nov. 4, 1922. Road-surface boxes'. - To prevent rocking, a manhole or like cover I is provided with a depending rim J the base of which is tapered to engage a corresponding annular groove G formed in an interior flange E at the base of the frame A. Drain-holes H are provided in the groove G.
Patent GB-1274470-A (GB)
Title: Improvements in or relating to intramedullary fixation devices
Inventor: HALLORAN WILLIAM XAVIER
IPC: A61B17/72
Filed: 1969-06-16
Abstract: 1,274,470. Fracture fixation device. W. X. HALLORAN. 16 June, 1969 [17 June, 1968; 7 Oct., 1968], No. 30330/69. Heading A5R. A fracture fixation device for insertion into the medullary canal of a fractured bone comprises a rod 21 with a plurality of longitudinally spaced slots (25), Fig. I (not shown) transversely extending therethrough, the slots being suitable for receiving screws 27, 54 used to secure compression plates 45, 55 on the exterior of the bone to provide longitudinal compression to the fracture site. The rod may be of a cross-section of sufficient size to extend substantially across the medullary canal and thereby hold the fractured portions against transverse movement. In an alternative embodiment, the rod may also have a helical groove (221), Fig. 14, (not shown) forming a bone engaging thread on its periphery for compressing the bone longitudinally as the rod is screwed into position.
Patent GB-625445-A (GB)
Title: Improvements in or relating to hand tools such as drills
IPC: B23B45/06
Filed: 1946-10-10
Abstract: 625,445. Hand drills. VENNING, J. D. E. Oct. 10, 1946, No. 30333. [Class 83 (iii)] A hand drill comprises a casing constructed of two identical parts which are secured together to enclose the driving mechanism and to form a handle. The parts 1, 2 are preferably die-cast and the opening 11 for the spindle 9 of the driving bevel wheel 4 may be formed during casting or subsequently. Bushes are provided for the spindle 9 and for the tool spindle 12. The two parts of the casing are secured together by bolts or screws and the upper part forms a spade-grip handle.
Patent GB-1467452-A (GB)
Title: Device for regulating the current in a load
IPC: G05F1/12
Filed: 1974-07-09
Abstract: 1467452 Automatic current control VECO ZEEFPLATENFABRIEK BV 9 July 1974 [11 July 1973] 30398/74 Heading G3R. The current in a load is sensed by a device producing a voltage which is then converted into a pulse-train with a frequency proportional to the current. Pulses are counted during a measuring interval, and the result is stored in a memory for comparison with pre-set upper and lower limit values. If either limit value is exceeded, the voltage supplied to the load is automatically adjusted in order to regulate the current. As shown, the current in a load B, which may be a galvanic bath, is sensed by a shunt C connected through a filter D and amplifier E to a voltagefrequency converter F supplying pulses to a counter H when a gate G is opened for an interval controlled by a clockpulse generator K. The setting and resetting of the counter H and a memory M are also controlled by the clockpulse generator K. The output from memory M is displayed on a  panel L, and the required value of load current is similarly displayed on a panel N connected to setting switches which are also connected to add and subtract circuits P1, P2 to which a tolerance limit signal is supplied. Circuits Q1, Q2 compare the contents of memory M with the limiting values from circuits P1, P2, and, if the limits are exceeded, an amplifier R energizes an appropriate relay T1, T2 connected to a servomotor S which adjusts a supply transformer A.