baber/WOPTO huggingface dataset:
Patent GB-412574-A (GB)
Title: Improvements in or relating to electric switches such as those controlling electric motors
IPC: H01H19/635
Filed: 1932-12-19
Abstract: 412,574. Actuating controllers; snapaction and retractive switches. BRITISH THOMSON - HOUSTON CO., Ltd., Crown House, Aldwych, London, and WISE, W. L., 7, St. Albans Road, Moseley, Birmingham. Dec. 19, 1932, No. 36006. [Classes 38 (iii) and 38 (v).] A controller comprises fixed contacts 1, Fig. 3, arranged in a plane, and co-operating movable contacts 20 mounted upon a member 19 constrained by equal parallel links, each link having a pivotal axis fixed relatively to the fixed contacts, and a pivotal axis fixed relatively to the member 19, so that the member 19 is movable from one to the other of two positions adjacent the fixed contact plane, and remains parallel thereto. The member 19 hangs from spindles 22 carried by a pivoted bent member 18, and a bent lever 23 connected with the member 19 is provided with a pin 24 engaged by a forked crank arm 25 on an operating spindle 26. A lever 27 for operating the spindle 26 is in two parts and moves in a gate, the member 19 being moved from one position to the other in a curved path, and remaining parallel to the fixed contact plane. Retaining projections are provided at the junctions of the gate paths. The member 19 may also be moved longitudinally so that other fixed contacts are bridged. In a modification, Figs. 5 and 6, the movable contact member is supported from pivoted bent members 36, through one of which passes a spindle 38 engaged in a slot in a member 39 pivoted eccentrically with respect to the pivots of the members 36. The member 39 has a slot 41 engaged by a pivoted double crank lever 42 which is connected by a spring 44 to a crank 45 operated by the machine driven by the motor which is controlled. The crank 45 is moved to opposite sides of the pivots of the lever 42 so that the switch is moved with snapaction. The member 39 may be moved longitudinally out of engagement with the spindle 38 by means which simultaneously move a similar member into engagement with the other end of the spindle, so that the switch may be manually operated. The manually operated lever 53, Fig. 6, which acts through this similar member on the other end of the spindle, and, therefore, on the switch, is provided with a crank 61 which operates a plunger 59 passing through sleeves 56, 57, and a spring 58 positioned in a pivoted member 54. This provides a spring return for the switch from " reverse " to " off " position, and a snap-action between the " off " and " forward " positions. Reference has been directed by the Comptroller to Specification 104,457, [Class 38 (iii)].
Patent GB-1388710-A (GB)
Title: Process of reducing the undulations of an end portion of a  corrugated plastics sheet of bending the end portion and a  machine therefor
IPC: B31F1/28
Filed: 1972-08-02
Abstract: 1388710 Sheet forming BLACKNELL  BUILDINGS Ltd 2 Aug 1973 [2 Aug 1972] 36031/72 Heading B5A A thermo-forming machine for bending the end of a corrugated plastics sheet to an included angle of at least 45 degrees and for flattening the corrugations, comprises a reciprocable base plate 2 for supporting a sheet 4 so that the end projects therefrom, an electrical heater 6 and a vertically movable plate 16 which can be lowered to engage one end 30 of a piston and cylinder unit 28 able to retract to bend the end of sheet against a forming surface 22 of the base plate. The plate 16 can be changed with other plates having different forming angle. The members 2 and 16 can be water cooled. The side portions of the sheet can be similarly bent.
Patent GB-871307-A (GB)
Title: Transistor with double collector
IPC: H01L29/00
Filed: 1959-10-28
Abstract: 871,307. Transistor circuits. CLEVITE CORPORATION. Oct. 28, 1959 [Nov. 12, 1958], No. 36538/59. Class 40(6) [Also in Group XXXVI] A junction transistor comprises a body 12 of semi-conductive material, e.g. germanium or silicon, having at least two P-N junctions adjacent one major surface and at least one P-N junction adjacent the opposite surface, there being a direct electrical connection between a pair of opposed junctions. Thus, P-N junction 18, Fig. 3, forming an emitter, is surrounded by an annular junction 20 which is directly connected to collector junction 24 and thus forms an additional collector. The spacing between junctions 18, 20 is made as small as possible and is less than the diffusion length of the charge carriers in the material. The additional junction 20 thus serves to collect charge carriers in the semi-conductor material which would otherwise recombine at the surface surrounding the emitter region. A base electrode 26 is provided on the periphery of the body 12. In the symmetrical arrangement of Fig. 4, annular junctions 20, 24b are connected together and connected to inner electrodes 18, 24a through equal impedances 36, 38 which may be ohmic resistors, diodes or pairs of diodes connected back to back. Either of the junctions 18, 24a may be used as an emitter, the other junctions collectively comprising the collector. The resistors 36, 38 may comprise an annular or segmental coating between inner and outer junctions on the intervening surface of the body 12.
Patent GB-341216-A (GB)
Title: Improvements in foot scrapers, cooking and other grids, plate racks and similar articles of a grid-like or rack-like construction
IPC: B60R3/04
Filed: 1929-11-29
Abstract: 341,216. Gratings. DOBSON, W., Gordon Works, Oxford Street, Birmingham. Nov. 29, 1929, No. 36584. [Class 107.] Articles of a grid-like construction are made each of a single sheet 2 of metal, slotted to form separate bars 3, which are then twisted into planes at right-angles to the sheet. Downturned or depressed parts 6, 8 serve as rests or feet. In modifications, there are formed between the bars 3 tongues which are then bent towards the centre line over the edges of the central strip 8 ; the bars 3 may be zig-zag instead of straight, or may have tongues bent alternately backwards and forwards.
Patent GB-922848-A (GB)
Title: Production of sulphate opal glasses
IPC: C03C4/00
Filed: 1960-10-25
Abstract: 922,848. Opal glass. CORNING GLASS WORKS. Oct. 25, 1960 [Nov. 2, 1959], No. 36616/60. Class 56. In the production of a sulphate opal glass, arsenic containing material, e.g. sodium arsenate, is added in an amount sufficient to provide 1-2% arsenic oxide in the glass batch which also contains about 3% sulphate ion calculated as SO3. An example of base glass composition contains 55-75% SiO2, 5-20% one or more Na2O, K2O, and Li2O, up to 15% one or more MgO, CaO, BaO, InO, PbO, and SnO, 0-15% Al2O3 and optionally up to 5% B2O3 and fluoride. The glass may also contain 0.5-2% TiO2 and/or Sb2O3 to inhibit solarisation. Conventional glass colorants may also be present. The batch is melted at a temperature not exceeding 1500 C. and for any batch the temperature does not vary by more than  5 C. The ratio of cullet to raw batch is controlled to produce the desired opacity. Other basic glass compositions may also be used in the invention. Specification 922,847 is referred to.
Patent GB-363118-A (GB)
Title: An improved device for producing the advancing and lagging of leaves in dobbies
IPC: D03C1/34
Filed: 1930-12-04
Abstract: 363,118. Loom shedding mechanism. STAUBLI, H., ST€UBLI, H., ST€UBLI, R., and ST€UBLI, H., (trading as STAUBLI & CO., GEB.), Horgen, Zurich, Switzerland. Dec. 4, 1930, No. 36624. Convention date, Sept. 17. [Class 142 (i).] A variable leaf movement, which prevents the warp threads crossing in one plane during shedding, is obtained by introducing a series of levers f<1>,< >f<2> . . between the usual jack levers or half swings a and the heald connecting bars e. The free end of each lever is formed with a cam surface which bears on a roller i supported by a pin k on a bracket l. Levers with cam surfaces of various shapes are used, and when a jack lever a is moved, the shape of the cam determines the amount of lag or advance of the corresponding heald relative to a normally working heald. The pivotal connection of the levers a and bars e with the levers f<1>, f<2> . . enables the latter to be fitted at any desired point, and allows the bars e to be connected directly to the levers a without changing the basic position of the leaves. In a modification, the acceleration and retardation of the leaves may be effected by causing levers, mounted in the same manner as levers fl .. to bear on cam surfaces provided on arms carried by pivots k, n.
Patent GB-799726-A (GB)
Title: Method of and means for sealing cartons
IPC: B29C65/00
Filed: 1956-11-30
Abstract: 799,726. Packaging. SANFORD, R. S., EATON, W. A., SEDERGREN, E. D., CASLER, R. H., and EAMES, J. O. [trading as SANFORD & CO., R. S.]. Nov. 30, 1956 [Dec. 2, 1955], No. 36632/56. Class 94(1). Cartons of the type closed by overlapping flaps are sealed after filling by overlapping the adhesive coated flaps, placing an impact member in contact with the flaps, and moving the carton and impact member at such a velocity that upon sudden deceleration, the contents of the carton will exert internal sealing force against the flaps on the impact member. Apparatus for sealing may comprise a chamber 20 closely confining the filled carton and having a hinged lid 24 forming the impact member. The chamber is carried on an arm 32 pivoted at 34 and is swung by a handle 40 against an anvil 46 to produce the impact sealing. The chamber may rest on the anvil for a period to allow the contents to exert further pressure on the flaps. The adhesive may be heat activated by means not described, prior to folding down of the flaps.
Patent GB-947989-A (GB)
Title: Improved packaging machine
IPC: B65B9/213
Filed: 1960-02-18
Abstract: 947,989. Feeding webs. PACKAGE MACHINERY CO. Feb. 18, 1960 [Dec. 4, 1959], No. 36690/62. Divided out of 944,944. Drawings to Specification. Heading B6B. [Also in Division B8] The invention relates to the web take-off device of Specification 944,944.
Patent GB-972011-A (GB)
Title: Improvements in and relating to capacitor voltage transformer arrangements
Inventor: COWIN WILLIAM ALAN
IPC: H02H1/00
Filed: 1959-10-29
Abstract: 972,011. Voltage modifying arrangements. ENGLISH ELECTRIC CO. Ltd. Jan. 27, 1961 [Oct. 29, 1959], No. 36757/59. Heading H2H. [Also in Division H3] A capacitative voltage transformer, for e.g. deriving signals from high-voltage transmission lines to operate protective relays, comprises a fixed tapping on a chain of capacitors arranged between line and earth, the relation between the value of the capacitance between the line and the tapping point and that between the tapping point and earth being adjustable to give different transformation ratios whilst preserving constant output impedance. Thus, in the transformer of Fig. 1 the values of the capacitances are so chosen that the output capacitance given by is the same whichever short-circuit connection 13 or 14 is used. Thus, an output signal of 12 kV. may be obtained for two different values 275/#3kV. and 132/#3 kV. of the line voltage. In Fig. 4 a different arrangement of the capacitors and of the short-circuit 13 is shown. In Figs. 2 and 3, the short-circuit is replaced by a tapping movable from terminal A to terminal B. In all these alternative embodiments the short-circuit 14 is used to obtain the alternative transformation ratio.
Patent GB-1190420-A (GB)
Title: Improvements in or relating to Atomising or Spraying Apparatus
IPC: F04B39/00
Filed: 1967-08-10
Abstract: 1,190,420. Forcing liquids by gaseous pressure. SOC. ANON. TECNOMA. Aug.10, 1967 [Aug. 30, 1966], No.36785/67. Heading F1R. In a dispenser of the type having an air pump mounted thereon to supply air to force liquid from the reservoir, the air pump 9 engages both endwalls 2, 3 of the reservoir 1 in the manner of a tie rod. The lower end of the pump has a member 24 which is screwed on to a member 32 secured to the end 3, whereby the head 10 is drawn into engagement with the end 2. A packing 14 seals the opening 4 in the end wall 2 which acts as a filling funnel. The handle 20 has a locking arrangement 21 which secures the handle to the head 10 and permits rotation of the latter. Air is released through the opening 4 before the members 24, 32 disengage.
Patent GB-434319-A (GB)
Title: Improvements in or relating to high voltage discharge tubes
IPC: H01J5/06
Filed: 1934-12-27
Abstract: 434,319. Discharge apparatus. MULLER AKT.-GES., C. H. F., 24, R÷ntgenstrasse, Hamburg, Germany. Dec. 27, 1934, No. 37079. Convention date, Jan. 26. [Class 39 (i)] A high - voltage tube has an envelope comprising an equipotential part and an insulating part, and the insulating part is so shaped adjacent the joint that it intersects a group of planes having the tube axis as their intersecting line in groups of curves having a substantially linear potential drop per unit length, this drop being smaller than that set up along any intersection of the planes with a surface continuous with the equipotential part. In one construction, an X-ray tube has an equipotential part 7 provided with a window 12 closed by a glass layer and two insulating portions 8. These portions 8 are shaped in the form of a jar so as to have a medium diameter larger than that of the part 7 and are sealed thereto by an inwardly turned edge 14 which is normal to the part 7. A flange 17 facilitates the sealing. The free ends of the part 7 have a glass covering 15.
Patent GB-1477353-A (GB)
Title: Function generator
IPC: G06G7/06
Filed: 1974-08-23
Abstract: 1477353 Waveform generators VEREINIGTE FLUGTECHNISCHE WERKE-FOKKER GmbH 23 Aug 1974 [25 Aug 1973] 37098/74 Heading H3H A waveform generator comprises a resistance network R 1  ... R n  and a control device 13, 14, 15 for switching the input to the output in stepped sequence through the network, and means Sl for switching the output end of the network to the input end during the switching period of the last switch of the network. The input voltage is simultaneously applied to a storage capacitor 11 and the stored voltage applied through an impedance transformer 12 to the low end of the network so that, during the switching time of Sl, no voltage exists across the network. According to how the input voltage is varied thereafter, either an increase or decrease in output voltage can be produced with a renewed run of the switches S 1  ... S n . The resistances and the switching times may be equal or unequal depending upon the waveform required. If the switches are run in both forward and backward sequence, the upper end of the network also requires a voltage store and means to connect the input voltage alternately to the two stores. A modification for finer stepping is described (Fig. 2, not shown) in which every other switch is connected in common through an impedance transformer to the upper end of a second network similar to the one shown in Fig. 1. The lower ends of the two networks are also connected by an impedance transformer. In this embodiment, the total number of steps results from multiplication of the steps of the first network by the second. The embodiment of Fig. 3 comprises additional resistances RZ 1  ... RZ n  switched by two additional switches K 1 , K 2  in such a manner than the output curve can be modified, e.g. from linear to sinusoidal. A control circuit is described (Fig. 4, not shown). in which a ditital input signal is fed to a digital store and to a D/A converter which provides an input for the network. The lower end of the network is fed through a second store and a second D/A converter. The two stores and the switches are connected to a common control unit.
Patent GB-1064482-A (GB)
Title: Improvements in or relating to the preparation of n,o-dimethylhydroxylamine derivatives
Inventor: SNYDER JACK AUSTIN
Filed: 1963-09-20
Abstract: Alkali and alkaline earth metal salts of N,O-dimethylhydroxylamine-N-sulphonic acid are prepared by distilling an aqueous solution of an alkali or alkaline earth metal salt of O-methylhydroxylamine-N-sulphonic acid with an alkali metal methylsulphate and an alkali until the consumption of alkali substantially ceases. The O-methylhydroxylamine-N-sulphonate reactants may be prepared as described in Specification 1,064,483 and the methylsulphate reactant may be prepared in situ. N,O-dimethylhydroxylamine may be prepared by (1) adding a suitable acid to the mixture resulting from the above N-methylation to lower the pH to 1 or below and heating until the sulphonate group of the N,O-dimethylhydroxylamine-N-monosulphonate is substantially hydrolysed, and (2) adding a suitable non-volatile base to the mixture resulting from (1) and recovering the free N,O-dimethylhydroxylamine so liberated.  Said recovery may be effected by distillation after the addition of sufficient base to maintain the pH of the mixture between 3 and 9 during distillation.
Patent GB-1383120-A (GB)
Title: Workpiece holders
IPC: B25B5/00
Filed: 1972-08-09
Abstract: 1383120 Clamps MULLARD Ltd 9 Aug 1972 37160/72 Heading E2B  A workpiece to be operated on through hole 7 is gripped beneath a plate 6 by a platform 8 which is carried on a plunger 9 which is forced upwardly by a spring 10, upward motion being limited by arms 12 sliding in slots 13 and abutting an adjusting nut 15 (shown screwed down to its lowest position). Adaptors 16 may be used and the whole unit pivots at 3.
Patent GB-1481793-A (GB)
Title: Spreaders for farmyard manure or like material
IPC: A01C3/06
Filed: 1974-08-02
Abstract: 1481793 Flail spreader MASSEY-FERGUSON-PERKINS Ltd 2 Aug 1974 [7 Aug 1973] 37316/73 Heading AID To avoid excessive starting torque, the shaft 40 of a flail spreader is driven at low speed by its ground wheels 18 (or tracks) via an overrun clutch 72 which permits the shaft 40 to be driven at spreading speed by a drive shaft 60 connected to a tractor power take off.
Patent GB-619715-A (GB)
Title: A transfer applying machine
IPC: B41F16/02
Filed: 1946-12-20
Abstract: 619,715. Transferring designs; deliveryapparatus for printing machines. CORAH & SONS, Ltd.. N., and HARRIS, T. Dec. 20. 1946. No. 37469. Addition to 595,259. [Classes 100(i) and 100(ii)] A transfer-applying machine as described in parent Specification is constructed with means for displacing the top article after each transfer applying stroke. A pair of gripper jaws 38, 39 project slightly below the iron 6, and are operated by a cam 47 and a cam shaft 46 driven by a flexible shaft 45. The grippers 38, 39 grip the top article. as the table begins its downward travel, and the suspended article is then engaged by a rotating member 41 mounted on a lever 42 driven by a spindle 43 driven by the shaft 45. The suspended article is displaced sideways, and the cam 47 opens the grippers to release the article at the appropriate time. Specification 614,150 is referred to in the Provisional Specification.
Patent GB-964090-A (GB)
Title: Improvements in and relating to hillside combines
IPC: B60G17/015
Filed: 1960-11-01
Abstract: 964,090. Combine harvesters. MASSEY-FERGUSON Inc. Nov. 1, 1960 [Nov. 9, 1959], No. 37479/60. Heading A1F. [Also in Division G3] A combine harvester consists of a frame 11, vertically adjustable drive wheels 12, 13 and a pivoted header assembly 14 arranged so that the machine may operate on a slope. The drive wheels are mounted at the forward end of arms 16, 17 which are pivoted to the frame at 18, 19 and are moved relative to the frame by a hydraulic system including a pump 25 and a double-acting actuator 21, the system being set into operation by a valve which is closed by a solenoid operated by the making or breaking of a mercury switch which is sensitive to tilting of the frame (see Division G3). The header assembly 14 is supported at a pivot 15 and from cables 41 and 42 which are wound in opposite senses about pulleys 38, 39 respectively. When the arm 16 (see Fig. 3) pivots a rack 31 turns a pinion secured to shaft 34 which turns by chains a shaft 37 on to which the pulleys 38, 39 are fixed, thus tilting the header assembly.
Patent GB-1126068-A (GB)
Title: Improvements in or relating to propellant grains
Inventor: LEGRAND KARLHEINZ
IPC: F02K9/12
Filed: 1965-09-02
Abstract: 1,126,068. Propellent compositions. NITROCHEMIE G.m.b.H. 2 Sept., 1965 [2 Sept., 1964], No. 37577/65. Heading C1D. [Also in Division F3] A propellent composition comprises nitrocellulose, nitroglycerine, diethyl phthalate, nitrodiphenylamine, candelilla wax, lead-2- salicylate, and lead-2-ethylhexoate. The composition is used for making a stabilized burning rate rocket charge having incisions extending into the charge from the initial burning surface and filled with powdered material having a different burning rate or inhibiting burning (see Division F3).
Patent GB-1154595-A (GB)
Title: Improvements in Sight Testing Equipment Primarily for Young Children.
Inventor: WITHNELL ALLAN
IPC: A61B3/02
Filed: 1966-08-23
Abstract: 1,154,595. Sight testing cards. A. WITHNELL and H.E. WILSON. Aug. 16, 1967 [Aug.23, 1966], No.37699/66. Heading G2J. In a set of three cards used for sight testing the cards have respectively one, two or three dark areas, separated by gaps in the last two cases, the overall size of the dark areas (including gaps) being the same for all three cards. The gaps are dimensioned so that at a given distance persons with visual acuity below a certain standard will not be able to distinguish between the cards. The cards may be combined as a single unit, or used separately.
Patent GB-1000324-A (GB)
Title: Improvements in or relating to gearing
IPC: F16H1/32
Filed: 1963-09-25
Abstract: 1,000,324. Reverse gear. L. PETRONI. Sept. 25, 1963 [Aug. 1, 1963], No. 37763/63. Heading F2D. A gyratory epicyclic reverse gear comprises an internally toothed planet 7 carried by the eccentric hub 6 of an input driving gear 5 and meshing a sun 8 keyed on an output shaft 1, the gear 5 being clutched to the output shape by a sliding face-dog clutch 3 for solid direct forward drive and the planet 7 being held from rotation for reduced reverse drive.
Patent GB-974227-A (GB)
Title: A flexible electrical conductor assembly
Inventor: DAHLGREN VICTOR F
IPC: H01B7/08
Filed: 1960-11-03
Abstract: <PICT:0974227/C6-C7/1> As shown in the flow-diagram, sheets of copper are immersed in a mild alkaline bath, rinsed in cold water, dipped in solution of hydrochloric acid containing a little ferric chloride, rinsed, immersed in a solution of sodium cyanide, rinsed, immersed in a hot solution of sodium or potassium hydroxide and sodium or potassium chlorite, rinsed in cold and then hot water and heated to dry them. The oxide films so formed aid the bonding of the copper to macromolecular materials (see Division B5).
Patent GB-1388585-A (GB)
Title: Detection devices
IPC: G06K17/00
Filed: 1972-08-14
Abstract: 1388585 Selecting records RICOH KK 14 Aug 1972 [14 Sept 1971 1 Oct 1971 28 Dec 1971] 37896/72 Heading G4M Laminar members 3, e.g. microfiche, are each provided with at least one reflective surface M, N which may form part of a clip 3B attached to the member, as shown, or may be separate therefrom, 28, 29 as in Fig. 11, the reflective surface(s) serving either to deflect light from a source 5 through a coded marginal portion of the member 3 and on to a detector 6 or being coded, whereby a selected member may be located and retrieved. In the apparatus described, the code for a selected member is entered on a keyboard, relative movement between the detector and a magazine containing the coded members takes place, and after detection the selected member is withdrawn from the magazine for display and/or copying of a selected information field thereon. Numerous different arrangements of the reflecting surfaces are described. One of the reflectors of a pair may be smaller than the other and movable relative thereto in order to provide serial read out of the code associated with the corresponding member.