baber/WOPTO huggingface dataset:
Patent GB-1124107-A (GB)
Title: Process for plating with tin
Inventor: SWALHEIM DONALD ARTHUR
IPC: C25D5/50
Filed: 1965-10-19
Abstract: A process for producing a bright Sn coating on a metal base, e.g. of low carbon steel, comprises the steps of electrolytically pre-coating the metal base with a preplate of Ni or Ni-Sn alloy from 2 X 10-8 to 65 X 10-8 inch thick, electrolytically plating Sn on to the pre-coated base, and thereafter flow-brightening the plated base by heating to a temperature of from 540 DEG  to 850 DEG F.  The preplate may be provided by passing current for 5 to 100 milliseconds through a known electro-plating bath using a transistor switching device. Specified baths producing 35% Ni, 65% Sn (by weight) contain SnCl2, NaF, NaHF2, NaCl and NiCl2, 6H2 O and are at a pH of 2.0 to 2.5. Specified Ni baths contain NiCl2, 6H2 O and H3 BO3, one being at a pH of 2.4 and the other, which also contains an unspecified surface active agent, being at a pH of 3.5.  The Sn coating may have a thickness corresponding to a weight of 0.25 to 1.5 pounds per base box.  The heating of the Sn plated base may be for not longer than 3 seconds after which the plated base is rapidly quenched.  Graphs (not shown) illustrate variations in corrosion resistance where different preplating thicknesses of Ni-Sn, different flow-brightening temperatures and different delay times before quenching have been used.
Patent GB-1132966-A (GB)
Title: Electrical heating film
IPC: H05B3/26
Filed: 1965-03-19
Abstract: 1,132,966. Electric heating films. P. EISLER 21 March, 1966 [19 March, 1965], No. 44333/65. Addition to 1,020,311. Heading H5H. The electric heating film described in the parent Specification including an electrically conductive foil having narrow elongated openings therein by which at least one meander pattern is defined comprising substantially parallel arms and bridges joining the ends of the arms, the foil pattern being characterized by the margins of the foil bounding the long sides of the openings being folded over and back on the foil arms, is modified in that the margins are folded over and back on one side only. A suitable modification to the apparatus for making the film is described.
Patent GB-1432126-A (GB)
Title: Self clinching staple
IPC: F16B15/00
Filed: 1974-10-15
Abstract: 1432126 Staples ILLINOIS TOOL WORKS Inc 15 Oct 1974 [23 Oct 1973] 44637/74 Heading F2H A self-clinching staple 12 is formed from flat strip and comprises a bridge 14 and a pair of legs 16, 18. Each leg has a part B twisted as shown and a point C formed at the end by unequal chamfers which provide a "camming" surface. These surfaces produce a clinching action of the legs towards each other as the staple is driven into a work sheet. Shoulders 24 may be provided to limit the penetration of the staple.
Patent GB-1191957-A (GB)
Title: A Tool Changer Mechanism for Machine Tools
IPC: B23Q3/155
Filed: 1968-09-19
Abstract: 1,191,957. Tool changing. DE VLIEG MACHINE CO. 19 Sept., 1968 [2 Oct., 1967], No. 44666/68. Heading B3B. A tool changing mechanism comprises a pair of arms 52, 54 oscillatable through 180 degrees and reciprocable by hydraulic means 66 to present a tool 28 to a spindle 24. Each arm has gripper means comprising oppositely movable grippers 56, 58 that include pins that engage in holes in parallel flat faces formed in the flange 32 of the tool shank 26. The flange also includes driving flats for engagement with driving fingers on the spindle. The gripping means and the rotation of the arms are actuated hydraulically by reciprocable piston racks movable between adjustable end stops and engaged by pinions. Limit switches 108, 110 are provided for the grippers 56 or 58 and operation of the mechanism may be programmed automatically. The gripping means of each arm may be actuated independently and the gripping means may be operated in conjunction with an automatic tool loading and unloading device or manually.
Patent GB-1273355-A (GB)
Title: Gas turbine engine fuel control systems
Inventor: SMITH TREVOR STANLEY
IPC: F02C9/32
Filed: 1968-09-20
Abstract: 1,273,355. Gas turbine engine fuel systems. JOSEPH LUCAS (INDUSTRIES) Ltd. Sept. 11, 1969 [Sept. 20, 19681 No.44804/68. Heading F1G. A gas turbine engine fuel system comprises a hydraulic bridge circuit connected between a regulated fuel pressure PA and a lower fuel pressure PC, one arm of the bridge comprising restrictors 10, 11 in series while the other arm comprises restrictors 15, 21 in series. Restrictor 10 is fixed but, as shown, may be adjustable, while restrictor 11 is variable by means of a lever 13 to set the desired engine speed. Restrictors 15, 21 are variable in accordance with the compressor inlet pressure and delivery pressure P4 respectively via respective evacuated bellows 19, 24. The pressures at the intermediate points 14, 25 of the two arms are applied via respective restrictors 35, 36 to the outside of respective bellows 33, 34 separated by a diaphragm 37 and subjected internally to atmospheric pressure. An air potentiometer formed by a variable restrictor 32 controlled by the bellows 33, 34 and a fixed restrictor 44 is connected between atmosphere and the tapping of a further air potentiometer formed by fixed restrictors 41, 42 connected between the compressor delivery pressure P4 and a lower pressure P3 of the compressor. When the engine speed differs from that set by the lever 13, the resultant unbalance of the hydraulic bridge causes the bellows 33, 34 to vary the restrictor 32 so as to vary the pressure applied via passage 43 to the outside of bellows 45, 46 which control the position of a sleeve valve 48, bellows 45 being evacuated while bellows 46 is subjected internally to the pressure P3. Fuel is supplied to the engine under the control of the valve 48 and a further valve 55, 56 which is controlled in accordance with engine speed by a governor 59 in opposition to the pressure drop across the valve 48.
Patent GB-1025537-A (GB)
Title: Self-clearing screen assembly for use in irrigation and like projects
IPC: E02B5/08
Filed: 1964-11-03
Abstract: 1,025,537. Irrigation. L. A. TURNER. Nov. 3, 1964 [Nov. 7, 1963], No. 44836/64. Heading A1B. A self-cleaning screen assembly for irrigation comprises a spillway channel 16 through a weir, a pivoted gate valve 19 comprising a trough-shaped float pivoted at the downstream end of a chamber 18 in the bottom of said channel, a clean water take-off 23 from said float chamber 18 to a canal or similar, a screen grid 25 pivotally mounted upstream and overlaying said gate valve such that lifting, i.e. opening, said gate valve 19 raises the free end of the screen grid 25, while downward closing of the gate valve 19 permits the screen grid 25 to assume a horizontal position to allow debris to be washed down the spillway channel 16. The float 19 may be raised or lowered according to the setting of a control lever 28 whereby a valve 27 may be opened to permit entry of water into the float 19 but becomes syphoned out more quickly through a pipe 30 until the float. 19 rises and closes: valve 27. If lever 28 is moved to an intermittent position the valve 27 is open whatever the float position is: and thereby causes a succession of: lifting and lowering operations. In the fully flooding position of valve 27 the float 19 remains in the down position.
Patent GB-1329305-A (GB)
Title: Magnetic record reproducing device
IPC: G09B5/04
Filed: 1970-09-21
Abstract: 1329305 Recording and playback CANON KK 21 Sept 1970 [20 Sept 1969] 44925/70 Heading G5R A main tape T carrying prerecorded information signals (e.g. teaching material) and control signals is driven simultaneously with an endless tape 13 so that information signals from the main tape T are rerecorded on the endless tape 13, until the read-out of a control signal stops the drive of the main tape T, e.g. by withdrawing the pinch roller 12. The distance between any two successive control signals is equal to the length of the endless tape 13 so that any previously rerecorded information is completely erased from the tape 13. A student provided with a microphone 27 and a remote control device 28 is then able to play back repeatedly the material rerecorded on the endless tape 13 and to record his own responses on a second track thereon.
Patent GB-1068889-A (GB)
Title: Treatment of polymeric materials with antistatic agents
IPC: C08K5/521
Filed: 1964-11-04
Abstract: Hydrophobic polymeric resins have dispersed therein, as an antistatic agent, a minor amount of a mono- and/or di- and/or tri-phosphate ester of a nonionic surfactant condensation product of (a) an organic compound containing at least 6 carbons which is capable of condensing with an alkylene oxide and (b) at least 1 molar proportion of an alkylene oxide.  Resins specified are polyethylene, polypropylene, polyvinyl chloride, polyvinyl fluoride, polychlorotrifluoroethylene, polytetrafluoroethylene, polyvinylidene chloride, polystyrene, polymethyl methacrylate, vinyl chloride-vinyl acetate copolymers, vinyl chloride-vinylidene chloride copolymers, acrylonitrile-styrene copolymers, acrylonitrile - butadiene - styrene copolymers, rubber hydrochloride, cellulose acetate, triacetate, butyrate or nitrate, ethyl cellulose, nylon, polycarbonates and polyethylene terephthalate. Suitable antistatic agents include the phosphate esters of condensation products of (a) alkyl phenols, aliphatic alcohols, fatty acids, amides and amines, rosin amine, alkyl and alkaryl sulphonamides, and alkyl and alkaryl mercaptans and (b) 1 to 150 molar proportions of alkylene oxides having 2 to 12 carbon atoms. The acid phosphate esters may be partially or completely neutralized, if desired, e.g. in the form of metal (e.g. alkali or alkaline earth metal), ammonium or amine salts.  The antistatic agent can be incorporated in the molten polymer or solutions of the polymer or can be added to the corresponding monomer before polymerization thereof. The polymers may be formed into articles such as films.
Patent GB-1428789-A (GB)
Title: Method and injection nozzle for the injection moulding of  synthetic bodies
IPC: B29C45/16
Filed: 1973-09-26
Abstract: 1428789 Injection moulding E LANGECKER 26 Sept 1973 [27 Sept 1972] 45052/73 Heading B5A In a method of injection moulding a body comprising a filling layer 27 of a thermoplastic material surrounded by a surface layer 25, 26 of another thermoplastic material, the material forming the filling layer is injected in the form of a tubular flow located between an outer tubular flow and an inner flow of surface layer material. The filling layer material is supplied from a plasticizer 23 and the surface layer material from plasticizers 22, 24. The supply of filling material is cut off by axial movement of a tube 9 to the position seen in Fig. 3 (not shown) before completion of the injection operation. The result is that a plug surface of layer material remains in the nozzle 12 which plug is introduced into the mould at the beginning of the next injection operation. The material of the centrally injected surface layer may be of different colour or composition from that of the outer tubular flow. Further, different materials may be used for the central and circular injections of surface material whereby the moulded body may have a surface layer of a different composition or colouring to that on the other side.
Patent GB-1322032-A (GB)
Title: Universal work feeding mechanism in a sewing machine
IPC: D05B73/12
Filed: 1970-09-23
Abstract: 1322032 Sewing machine SINGER CO 23 Sept 1970 [29 Sept 1969] 45241/70 Heading D1G A sewing machine having provision for moving the needle laterally of the usual feeding direction while the needle is out of the work, to provide zig-zag stitches, has means selectable by an operator to move the needle laterally while the needle is in the work to provide a lateral feeding movement: The usual feed dog may either be dropped, or employed to provide an inclined feeding direction. The sewing machine described is that disclosed in Specification 808351 and essentially provides a handle (87 not shown) adjusting the width of lateral jogging of the needle and a handle (45) for adjusting the stitch length. A cam 600, a top fixed cam 500 and an upper removable cam 400 are provided. When follower 99 is interposed between cam 600 and pitman 93 the needle is moved from right to left, for example, while the needle is out of the work and remains there while the needle descends and risesagain. Cams 400 and 500 have twice as many nodes as cam 600 and rock the needle bar gate, when follower 99 is appropriately positioned, while the needle is in the work (Fig. 3 not shown)..  Presser feet. The under surface of the presser foot 703 is provided with a rib (708, Fig. 2 not shown) which surrounds the needle aperture 707 and is of uniform cross section to provide a resistance which is the same for all directions of the work movement.
Patent GB-1468277-A (GB)
Title: Method of driving liquid crystal matrix display device
IPC: G02F1/133
Filed: 1974-10-18
Abstract: 1468277 Matrix displays HITACHI Ltd 18 Oct 1974 [19 Oct 1973] 45290/74 Heading G5C To drive a liquid crystal matrix display device, e.g. in the dynamic scattering mode in which a cell scatters light when the RMS alternating voltage across it exceeds a threshold, but alternatively in the field effect mode, where the device comprises crossed arrays of opposed electrodes on facing surfaces, one array being scanned with a change in voltage while the members of the other (signal) array, the cells of which are to be displayed on a given scanning line, receive a changed voltage during the period of excitation of the particular scanning electrode, voltages are applied so that the voltage difference across non-selected cells along a scanning electrode is different from that across other non-selected cells, all of which receive numerically equal voltages. If the voltages V Y  applied to selected and non-selected signal electrodes are V 11  and V 12  respectively and those V X  to selected and non-selected scanning electrodes are V 21  and V 22  respectively, and if V 0  is the amplitude of the excitation voltage across a selected cell, with V 0 /b across non-selected cells along a selected scanning electrode and V 0 /a across all other non-selected cells, then taking V 11  as an arbitrary level, the required conditions are met by setting the voltages to The datum level V 11  is taken as V 0 (1 + 1/a) in Columns 1-4 of Fig. 13 showing V 11  in columns 1 and 2 of V Y  and V 12  in columns 3 and 4, and showing V 22  in columns 1 and 4 of V X  and V 21  in columns 2 and 3, with the excitation voltage V Y  - V X  for corresponding cells, all based on the first set of expressions above. Columns 5-8 show corresponding voltages based on V 11 =0 and the second set of expressions. Square waves alternating about a zero datum (V 11 =0) may be used in practice (Fig. 12, not shown) swinging from the first to the second set of expressions and back. The discrimination ratio α, measured by the ratio of RMS voltages over the full scan of N electrodes, across a selected cell and the most strongly excited non-selected cell, is given by from which α may be maximized by setting a = 1 + #N. The voltages are then set to bring V 0  on the selected cell above threshold and V 0 /a and V 0 /b below threshold (Fig. 5, not shown). In the prior art a is set to 3 ("one-third bias" method), making also b=3, the discrimination being less than the maximum according to the invention, which allows 50 or more scanning electrodes with adequate discrimination.
Patent GB-1506945-A (GB)
Title: Method of and apparatus for inserting or removing additional information in or from a television signal
IPC: H04N7/08
Filed: 1975-10-31
Abstract: 1506945 Multiplexing television signals with additional information; radio signalling BLAUPUNKT-WERKE GmbH 31 Oct 1975 [15 Nov 1974] 45507/75 Headings H4F and H4L The invention relates to a method and apparatus for inserting additional information in a television signal, and apparatus for extracting the same (e.g. station, channel, programme, date or time identification) wherein the information is represented by or modulated on one or more ultrasonic subcarriers which are in turn modulated on the sound carrier, whereby the beginning of an information insertion cycle coincides with the beginning of a scanning field. As described the information, to be transmitted in two fields, is coded 7, 8 as integers and fed to respective down counters 9, 10. Circuit 11 separates vertical sync. pulses (field pulses) and controls a bistable trigger 12 and a clock generator 15 through a delay 14 so that a short time after the start of a field the clock generator issues pulses causing the counters to count down to 0. For each state of the bi-stable only one of the counters reaching 0 stops the clock so that successive fields contain pulses corresponding to the numbers in counters 9 and 10 alternately (Fig. 4, not shown). Gate 13 allows a single pulse to pass at the beginning of alternate fields. The output from adder 16 is modulated on an ultrasonic subcarrier (preferably at a multiple of half line frequency) and added to the audio signal before being modulated together on the sound carrier (Fig. 1, not shown). By varying the number of coders and counters and by modifying the logic circuitry the information may alternatively be made to occupy one field or more than three fields. Also the clock generator may be replaced by a frequency divider working on line frequency. Furthermore, the subcarrier modulated by pulses may be replaced by a number of unmodulated subcarriers. At the receiver, apparatus is provided (Fig. 5, not shown) which demodulates the sound carrier, extracts the information subcarrier and demodulates this to leave the information signal. This signal is compared with a preset programme selector. A station searcher scans the available channels until the information signal corresponds to the preselected signal when it locks on to the incoming signal and displays identifying information on a visual display. Stores may be provided for holding the partial information signals until the complete signal has been received when comparison with the preselected signal may be made, otherwise a partial comparison may be made at each field, a subsequent comparison only being made if the first was good. If the television signal is provided with time information, the apparatus may be used to turn on the receiver at a preselected time.
Patent GB-938447-A (GB)
Title: Improvements in and relating to a rotary pump
IPC: F04D29/70
Filed: 1961-12-22
Abstract: 938,447. Circumferential flow pumps. P GEFFROY. Dec. 22, 1961 [Dec. 30, 1960], No. 46006/61. Class 110 (1). A rotary pump for liquids comprises at least one pump body A, containing a rotor E and having a machined face 2 provided with a pump delivery port 11a, and an auxiliary distribution and inlet body B clamped against the face and provided with a distributer chamber 12 having a rotatable valve element F, and the chamber communicating with the port 11a and, laterally, with two connections 14, 15, which perform alternately the functions of an inlet connection and a delivery connection, depending on the orientation of the element (shown in Fig. 5 to be in a neutral and closed position) by a lever 26, and with at least one pump inlet pipe 13 communicating with an inlet chamber 32 which connects with the interior of the pump body through an inlet port 10 and an aperture formed in the machined face 2. The inlet pipe has a perforated inner wall 13a and a filtering strainer G is incorporated in the inlet body B. Two bleed orifices 41 closed by screws are provided in the base of the chamber 32, and a stop valve is provided in an excess pressure by-pass between an opening 45 in a delivery chamber 46 of the pump and an opening 43 in the chamber 32. In another embodiment (Fig. 6, not shown) two pump bodies are provided between which is disposed a distribution and inlet body, the two rotors discharging in parallel to the distributer chamber.
Patent GB-1126173-A (GB)
Title: Output current polarity sensing circuit for cycloconverters
IPC: H02H7/12
Filed: 1965-11-02
Abstract: 1,126,173. Frequency changing. LEAR SIEGLER Inc. 2 Nov., 1965 [18 Nov., 1964], No. 46443/65. Heading H2F. A cycloconverter comprising two groups of controlled rectifiers 11, 12 connected in antiparallel relationship between an input supply and an output terminal 15 has a sensing circuit for each group which gives an output signal when the rectifiers of that group are conducting. As shown each sensing circuit comprises current transformers 26, 27, 28 associated with diodes 34, 35, 36 to give a D.C. output at terminals 32, 38. These outputs may be used as blanking voltages for application to non-conducting elements, so as to avoid circulating currents.
Patent GB-1031440-A (GB)
Title: Improvements in or relating to handles for cases or the like
IPC: A45C13/26
Filed: 1963-11-27
Abstract: 1,031,440. Handles for cases. HEINRICH SUDHAUS SOHNE. Nov. 27, 1963 [Dec. 6, 1962], No. 46857/63. Heading A4G. A pivotable handle 1 for an article 10 comprises e.g. a plastics-coated metal band riveted at 6 to a holder 3 having a key-hole slot 7 whereby the holder is secured around the neck 5 of an article bolt 8 having a polygonal head 19 and held by a ridge 16 in a leaf spring 15, the head being laterally engaged between the arms of a U-spring 11 so that the handle is held in various pivoted positions by the spring gripping the sides of the head. The handle may be removable. The bolt head may be knurled, the knurling being engaged by the free end of a spring.
Patent GB-1391224-A (GB)
Title: Resins and the preparation thereof
IPC: C07C61/29
Filed: 1972-10-11
Abstract: 1391224 Bridged ring alicyclic compounds ARAKAWA RINSAN KAGAKU KOGYO KK and NARD INSTITUTE Ltd 11 Oct 1972 [13 Oct 1971 21 Oct 1971] 46858/72 Heading C2C [Also in Divisions C3 and D2] Novel compounds of Formulae I and II (in which each of R<SP>1</SP> to R<SP>6</SP> is H or CH 3 , each of R<SP>7</SP> to R<SP>10</SP> is H, C 1-6  alkyl or phenyl and X is CN, COOR or CONH 2 , R being H, C 1-6  alkyl, alkali metal or NH 4 ) are prepared by reacting a compound of Formula III with a conjugated diene of Formula IV and, if desired, hydrogenating the resulting compound I to form the corresponding compound II. Compounds III are prepared by reacting an appropriate cyclopentadiene with an appropriate unsaturated compound, e.g. acrylonitrile or methyl acrylate.
Patent GB-1499871-A (GB)
Title: Swan neck trailers
IPC: B62D53/06
Filed: 1973-10-08
Abstract: 1499871 Swan-neck trailers TASKERS TRAILERS Ltd 8 Jan 1975 [8 Oct 1973] 46931/73 Heading B7T [Also in Division B8] A semi-trailer comprises a load-carrying platform 12 and a removable swan neck 1 which carries a king pin 10 for coupling with the fifth wheel of a tractor vehicle or of a forecarriage, the swan neck being provided with hydraulic cylinders 5 for causing movement of members 22 engageable with hooks 3 at the front end of the platform, the arrangement being such that when the front end of the swan neck is supported on the fifth wheel of the tractor vehicle or forecarriage, the front end of the platform can be raised and lowered by operation of the cylinders 5. As illustrated, the swan neck 1 abuts against an abutment 16 of the platform 12. In a modification of the illustrated embodiment, links 2 have hooked lower ends for engagement with a bar member provided on the front end of the platform.