baber/WOPTO huggingface dataset:
Patent GB-591563-A (GB)
Title: Improvements in or relating to two-stroke internal-combustion engines
IPC: F02B25/00
Filed: 1945-05-11
Abstract: 591,563. Two-stroke engines. TROJAN, Ltd., DYKES, F. J., and RICKWOOD, H. J. May 11, 1945, No. 11920. [Class 7 (ii] 'In a two-stroke engine having a combustion chamber 48 common to two working cylinders in which pistons connected to the same crankshaft control inlet'and exhaust ports 44, 46, the charge is supplied by a separate pump cylinder 50, and the three pistons are each connected to the same crank pin ; two sets of three pistons are connected to two crank 'pins arranged at an angle of 180 degrees, and the pump cylinder of one set supplies charge to the working cylinders of the other set. The pump spaces are permanently, connected by passages 62, 64 to opposite sides of a partition 80 in a rotary valve 70, which rotates at engine speed and controls inlet and outlet passages 60, 66, the passage 66 being connected by a pipe 68 to the inlet ports 44 of both pairs of working cylinders. Alternatively, inlet ports in the pump cylinder may be controlled by their pistons.
Patent GB-903173-A (GB)
Title: Improvements relating to filters
IPC: B01D35/02
Filed: 1960-04-05
Abstract: 903,173. Filters. PUROLATOR PRODUCTS (CANADA) Ltd. April 5, 1960 [Feb. 22, 1960], No. 11936/60. Class 46. Liquid fuel flows from the right into tapering spaces 29, 30, 31 formed between pairs of frusto-conical filtering elements 15-14, 13-12 and 11-10 respectively, the elements being held in stepped relationship by a bail 23. The elements are held in concentric relationship at the inlet end by the bail 23 and by rings 17 and 18, and at the discharge end by a diametral brace 22 and rings 19, 20 and 21. The inlet end of element 10 is closed by a cap 16. The unit fits within the discharge nozzle (not shown) of a liquid-fuel-distributing installation and an 0-ring seal 27 engages the inner peripheral wall of the nozzle. Most of the area of each element is kept clean by the flow of liquid along it, the solids collecting in the pockets formed at the discharge end of the unit.
Patent GB-1007598-A (GB)
Title: Semi-conductor devices
IPC: H01L23/16
Filed: 1962-03-28
Abstract: 1,007,598. Semi-conductor devices. SIEMENS-SCHUCKERTWERKE A.G. March 28, 1962 [March 29, 19611, No. 11945/62. Heading H1K. A PNP semi-conductor device in a sealed housing has the N-type zone in contact with a substance on a small portion of the surface which acts electropositively so as to induce negative charges on the surface of the N-zone and so prevent any tendency for a shortcircuiting P-type channel to form. The substance may be in the form of a lacquer such as a silicone modified terephthalic ester resin, or the surrounding space in the enclosure may contain ammonia in aqueous or gaseous form. Alternatively, a lacquer comprising 20% of alizarin may be used. Fig. 4 shows a semiconductor device comprising an N-type body la with P-type layers 16<SP>1</SP> and 161<SP>1</SP> and a further N-type layer under electrode 2 so that the arrangement provides a PNPN device which may be used as a transistor or semi-conductor thyratron. The body is contained in a sealed housing with an electropositive substance as described so that short-circuiting across the exposed surface of N-type 1a is avoided. The semi-conductor material may be silicon, germanium or an A III B V  compound.
Patent GB-599556-A (GB)
Title: Improvements in or relating to divided skirts
IPC: A41D15/02
Filed: 1945-05-14
Abstract: 599,556. Skirts. LIORET, O. L. May 14, 1945, Nos. 12032 and 12033. Convention dates, Feb. 1, 1943, and Oct. 5, 1943. [Class 141] A divided skirt adapted for either town or sports wear, has the leg portions sewn together at the back and detachably secured at the front. As shown in Fig. 2, the fastening means consists of a zip fastener 4 concealed behind a wide pleat 6. The two elements 4a, 4b of the fastener, Fig. 4, are sewn within a narrow additional double pleat 5a, 5b. For sports wear, the zip is opened-to allow freedom of movement.
Patent GB-455556-A (GB)
Title: Improvements relating to the production of coloured photographic pictures
IPC: G03C7/388
Filed: 1935-04-18
Abstract: p - Aminobenzoyl - m - aminophenylmethyl - pyrazolone is prepared by reduction of the reaction product of m-amino-phenylmethyl-pyrazolone with p-nitrobenzoylchloride.  The symmetrical urea of p-aminobenzoyl-m-aminophenylmethylpyrazolone is also referred to.
Patent GB-1520717-A (GB)
Title: Electric heating elements
IPC: H05B3/76
Filed: 1977-03-22
Abstract: 1520717 Metal sheathed heating element EMERSON ELECTRIC CO 22 March 1977 [16 June 1976] 12062/77 Heading H5H To ensure that molten metal is not expelled from a metal sheathed element when it fails a return conductor 22 is connected to a coiled resistor 21 at the blind end of the sheath and passes through the coiled resistor 21 to the other terminal end of the sheath, the sheath 10 is filled with compacted insulating material 23 and the cross-section of the element is so designed that the spacing between the coiled resistor 21 and the sheath 10 is not less than the spacing between the coiled resistor 21 and the return conductor 22. Thus in the event of overheating of one part of the coil resistor 21 the insulation between the return conductor 22 and resistor 21 will be hotter than the insulation between the resistor 21 and sheath 10 and the insulation between the resistor and return conductor will break down to enable the resistor to short to the return conductor until one or other of them is ruptured and current thereby interrupted.
Patent GB-1293875-A (GB)
Title: Improvements in and relating to protective devices
IPC: H05K10/00
Filed: 1970-03-13
Abstract: 1293875 Fusible cut-outs; protective arrangements ROBERT BOSCH GmbH 13 March 1970 [15 March 1969] 12065/70 Headings H2G, H2K A protective device for protecting against reverse polarity loading comprises a fuse 45, in the form of a sheet metal strip, riveted to a connection terminal 47, 48 and to a cooling element 23 of sheet metal, a diode 26 (Fig. 4, not shown) pressed into a flange around an aperture in the cooling element, and an insulated body 10 through which the diode and the connection terminal extend and to which the cooling plate is riveted at 38, 46. The cathode of the diode connects with the cooling plate via the diode body and the anode via pin 28, Fig. 4 (not shown), to lead 30, 29 which is earthed. The cooling element has a hole 36, Fig. 1 (not shown), through which a connection post of the apparatus to be protected may be inserted. In operation application of reverse polarity causes the diode to provide a path to ground thus drawing a heavy current through the fuse, causing the latter to rupture.
Patent GB-309962-A (GB)
Title: Improvements in hydraulic pumps and motors having radial fixed or rotary cylinders
IPC: F01B1/06
Filed: 1929-04-18
Abstract: 309,962. Soc. Anon. des Etablissements Cuttat. April 18, 1928, [Convention date]. Eccentric - actuated pumps. - In pumps and motors having radial fixed or revolving cylinders disposed outside an eccentric, the piston connecting- rods 15, Fig. 6, are connected to pivoted links 14 provided with rollers 13 or other means engaging a track member 63 mounted on the eccentric 62. The revolving cylinder form is of variable output, an eccentric 10, Fig. 1, being adjustable on an eccentric 7 by means of a sleeve 33, which is manually or automatically operated, and the distributing valve 27 being keyed to the sleeve 33.
Patent GB-513955-A (GB)
Title: Improvements in turning lathes and like machine tools
IPC: B23Q1/01
Filed: 1938-04-23
Abstract: 513,955. Grinding-lathes. MAUSER-WERKE AKT.-GES. April 23, 1938, No. 12217. Convention date, April 26, 1937. [Class 60] [Also in Group XXII] Relates to lathes of the kind in which the blank rotates between centres in the interior of a hollow support apertured to admit the tool and consists in pressing the support as a solid cylindrical sleeve fitting in the spindles. The work 1 is mounted between centres on headstock and tailstock spindles 4, 3 on which is moulded a sleeve 5 cut away at 8 to admit a grinding wheel or turning tool 2. The headstock 11 is mounted on the sleeve and traverses with it under the control of a screw and nut 12. The screw may be geared to the spindle 4 and may be driven independently. The spindle is driven either by the worm gearing shown or by belt or electric motor. In modifications the spindle 4 is fed by racks or cams with mechanical, hydraulic, or pneumatic drive. Several sleeves may be combined into one machine preferably with a common drive. A rotary tool may be provided with a sliding supporting sleeve for axial traverse instead of the rink. Specification 116,174, [Class 60], is referred to.
Patent GB-798443-A (GB)
Title: New diagnostic compositions
Inventor: THORP JEFFREY MEYRICK
IPC: G01N31/22
Filed: 1956-04-23
Abstract: Diagnostic compositions useful as cardiac output indicators are sterile aqueous solutions containing a dyestuff of the formula: <FORM:0798443/VI/1> wherein R stands for hydrogen or for a methyl radical, in the form of a salt thereof, especially an alkali metal salt, e.g. the sodium salt.  The solution contains 0.1 to 10, and preferably 0.5 to 5 per cent, of the dyestuff.  Optional additions are bacteriostats such as chlorocresol and/or ingredients which are known to be useful for the preparation of isotonic solutions, e.g. sodium chloride.  The sodium salt of 3 : 6 disulpho - 8 - hydroxy - a - naphthalene - azophenyl a  - naphthylamine - 8 - sulphonic acid is used in the examples.
Patent GB-1430626-A (GB)
Title: Methods for controlling blast furnaces
IPC: C21B5/00
Filed: 1973-03-14
Abstract: 1430626 Controlling blast furnace operation SUMITOMO METAL INDUSTRIES Ltd 14 March 1973 [15 March 1972 14 Oct 1972] 12341/73 Heading C7D Blast furnace conditions are controlled by using data derived from fluctuations in the blast pressure, and, optionally, the descending rate of the charge. The fluctuating blast pressure is indicated on a strip chart Fig. I (not shown) and a blast pressure index can be derived from the curve. A descending rate index is derived from an equation from calculations of the height of the charge in the furnace, before and after re-charging. The values of these indices are used to control the furnace condition, by using the results to vary the sinter, coke or ore feeds.
Patent GB-1362613-A (GB)
Title: Smoking mixtures
IPC: A24B15/32
Filed: 1972-03-16
Abstract: 1362613 Artificial tobacco IMPERIAL CHEMICAL INDUSTRIES Ltd 6 Feb 1973 [16 March 1972] 12357/72 Heading C3F [Also in Division A2] A synthetic tobacco comprises a tobacco substitute (a material which may be smoked like tobacco but is not of tobacco origin) mixed with the extract obtained by treating Nicotiana Rustica with a nicotine-dissolving solvent. The substitutes specified in the claims are cellulose, cellulose ether, oxidized cellulose and lettuce leaves; the substitute exemplified is the product obtained by heating α-cellulose impregnated with ammonium sulphamate. Other materials present include glycerol, citric acid, potassium citrate, casein, calcium and magnesium carbonates and bentonite. Between 65% and 90% by weight of tobacco based on the mixture may be added.  The extract may be fractionated into nicotinerich and flavocerant-rich fractions, which may be recombined in appropriate proportions to give acceptable smoke.
Patent GB-1004960-A (GB)
Title: A process for the production of solid diene polymers
IPC: C08C2/06
Filed: 1964-03-24
Abstract: 1,3-Butadiene is polymerized in a hydrocarbon diluent in the presence of a titanium containing complex organometal catalyst, a stabilizing agent admixed with the solution obtained, the polybutadiene solution emulsified with water in the presence of an emulsifier and the emulsion steam distilled, the emulsifier being the reaction product of (a) a difficultly volatile water-soluble polyglycol ether amine with (b) an aliphatic carboxylic acid containing at least 10 carbon atoms, an aromatic carboxylic acid containing at least 10 carbon atoms, a rosin acid, a copolymer of styrene and maleic anhydride or a copolymer of styrene and a maleic acid semi-ester.  Specified catalysts are  LiAl(17-C4H9)(C-C4H9)3/I2/Ti Cl4, LiC4H9/I2/TiCl4, Al(i-C4H9)3/I2/(C8H17-CH = C (CH2)7 COO)TiCl3, Ti(CH3-CO = CH-COCH3)3/ICl/Al(C-C4H9 3 and (CH3-CO = CH-CO-CH3)TiCl3/ICl/Al (C-C4H9)3.  Specified polyglycolpolyether amines are the reaction products of 2-10 mole of ethylene oxide with one mole of dimethylamine or of morpholine citrile stearic acid, diphenyl-4-carboxylic acid and disproportionated abietic acid are specified acids.  The distillation may be carried out by introducing the emulsion continuously into water having a temperature above the boiling point of the azeotropic mixture consisting of water and the hydrocarbon diluent.  Specifications 856,326 and 899,154 are referred to.
Patent GB-372926-A (GB)
Title: Improvements in or relating to inflating pump connectors or couplers
IPC: F16L37/05
Filed: 1931-04-28
Abstract: 372,926. Tyre pump connectors. TURNER, W., 44, Eyre Lane, Sheffield. April 28, 1931, No. 12458. Addition to 345,746. [Class 99 (i).l In a tyre-pump connector of the kind which includes a split ring g adapted to be forced down a bevelled internal flange b<1> at the outer end of the connector and contracted to grip the valve nipple by a camoperated plunger c, fluidtightness is secured by a piston f which is disposed within the plunger c and subjected to the internal air pressure and the pressure of a spring m and is formed with a flat rubber face to contact with the end of said nipple. The piston is fitted at its rear end with a cup-leather i which is forced against the walls of the plunger by a bevelled disc l upon which one end of the spring m bears, and is further provided with a central hollow pin j which constitutes an air passage between the inflator and tyre and also serves to hold the tyre valve off its seat. A yielding buffer comprising a rubber disc n and metal facing discs o, p is disposed between the connector cam d and the plunger.
Patent GB-862078-A (GB)
Title: Improvements relating to heating and ventilating regulating means
IPC: B60H1/00
Filed: 1959-04-13
Abstract: 862,078. Ventilating vehicles. DAIMLERBENZ A.G. April 13, 1959 [April 12, 1958], No. 12462/59. Class 137 In a vehicle ventilating system wherein the flow of air is regulated by the adjustment of flap valves (not shown), the control means for effecting the adjustment comprises two approximately horizontal swingable levers 10, 11, one of the levers controlling the admission of fresh air and the other controlling its distribution to the vehicle, the levers being mounted to be swingable about a pivot 16 and also movable rectilinearly relatively to it. The lever 10 controlling - the fresh-air admission is a bellcrank having a short limb 12 connected to the flap valve by a Bowden cable 21. The lever 11  has a short limb 39 attached to a Bowden cable 38. The levers are each connected to a block 23, 231 sliding in a slideway 221 formed in the frame 15 which carries the levers and the pivot 16. Each lever has a slot 14 which enables it to slide longitudinally as it is rotated. For this reason, equal increments of lever-movement produce unequal increments of flap-valve movement.
Patent GB-566274-A (GB)
Title: Ribbon vibrator dust cover for typewriters and the like
IPC: B41J29/12
Filed: 1943-08-02
Abstract: 566,274. Typewriters. OLIVER, R. H. Aug. 2, 1943, No. 12472. [Class 100 (iv)] A dust cover for the framework aperture in which the ribbon vibrator operates, consists of a plate bent to the angle of the top plate of the machine and provided with two shaped fingers which tuck under the writing-line gauge. The cover rests on the top plate and has a small hole for the ribbon-throw check-screw, the nut of which is used to secure the cover.
Patent GB-256342-A (GB)
Title: Improvements in or relating to the production of knopped yarns
IPC: D04D1/00
Filed: 1925-05-14
Abstract: 256,342. Hogg, H. May 14, 1925. Special yarns, producing; rollers and roller heads.-In the production of knopped yarns of different colour or character, means are provided for enabling knops, of either colour or character, to be produced in any order and at any intervals. The delivery rollers for the yarns are geared through change gears 7 to spindles 5 and these are driven from a suitable rotating shaft of the twisting frame. The motion is transmitted at various speeds by means of suitable clutches and suitable gearing. These are selected by bowls 16 on a driven pattern chain 17. The bowls 16 .engage their respective shoes 15 on T-levers 11<1>, 13<1>, which, by engagement with sliding cam members 11, 13 put the respective clutches into and out of operation. The neutral position of the cam members 11, 13 is ensured by the use of a second pair of shoes 15<1> of smaller length than the shoes 15.
Patent GB-220075-A (GB)
Title: Improvements in or relating to calf-feeders and the like
IPC: A01K9/00
Filed: 1923-05-10
Abstract: 220,075. Hole, S. May 10, 1923. Feeding-bottles.-A calf or like feeder comprises a teat a removably attached to a milk container d, and having flexible diaphragms with slit-like apertures to limit the flow of milk therethrough. The teat a is formed with a flange a' to be gripped between a flared ring b and a socket c that are bayonet jointed together. Diaphragms e<1> of rubber &c., having diametral slits f are secured across the milk passage, the slits being arranged at different relative angles and diaphragms of different thickness used to vary the resistance offered to the flow of milk. The outlet aperture d<2> extends to the bottom d<1> of the container d, and is level with the top of the milk passage in the teat. According to the Provisional Specification, the aperture d<2> is covered by an internal plate having a channel leading from the bottom of the container and secured by two pins that protrude through the wall and through holes in the diaphragms e<1>, the flange a<1>, and the ring b, and wedges passed through the ends of the pins, a number of holes being formed in the diaphragms e<1> and flange a<1> to allow of different angular arrangements. The container may be of rectangular cross-section tapering downwardly, so that it hangs in an inclined position against a vertical support.
Patent GB-710273-A (GB)
Title: An improvement in or relating to friction clutches
Inventor: EASTWOOD TOM
IPC: F16D21/06
Filed: 1951-05-30
Abstract: 710,273. Friction clutches. BROWN TRACTORS (ENGINEERING), Ltd., D. May 12, 1952 [May 30, 1951], No. 12646/51. Class 80 (2) In a double friction clutch wherein a central presser-plate p is moved axially in opposite directions to clamp selectively etheir of two driven discs r', r<SP>2</SP> splined on concentric output shafts s, t, against an input flywheel j and housing j' bolted thereto, the presser-plate p is actuated by axial movement of a slidable collar g acting through radial levers h, pivoted in flywheel lugs j<SP>2</SP> and having cam engagement with blocks k axially slidable in the same lugs j<SP>2</SP> and slidably carrying rings m<SP>1</SP>, m<SP>2</SP>, pressed apart by compression springs n through which clutchengaging pressure is applied to the axial studs o, adjustably screwed in the presser-plate p and passing freely through the rings m<SP>1</SP>, m<SP>2</SP>, with abutments on each side thereof to transmit the engaging pressure in the appropriate direction The co-operating cam surfaces on the levers and blocks k have continuations k<SP>2</SP> through which the springs n lock the clutch in the engaged positions. The operating collar g is centred in neutral by a spring ball-detent u, and is operated through slippers and a fork d<SP>2</SP> on a rockshaft a by a hand-lever assisted by an overcentre spring.
Patent GB-673271-A (GB)
Title: Improvements in or relating to motor control systems
IPC: B21B37/54
Filed: 1950-05-22
Abstract: 673,271. Control of two D.C. motors. WESTINGHOUSE ELECTRIC INTERNATIONAL CO. May 22, 1950. [June 28, 1949] No. 12716/50. Class 38 (iii). [Also in Group XXXV] A control system for a motor DM driving a reel 12 associated with mill apparatus comprises a generator DG supplying the motor DM, a current regulating generator CR, normally operative to regulate the output voltage of the generator DG in accordance with the armature current of the motor DM, and a speed limiting generator LR to control the operation of the generator DG in accordance with the speed of the motor DM and that of a motor MM driving a mill stand 15. The apparatus is started by closing a main switch MS and push button 65 thus energizing the motor MM and relays DST, DMC and SLR. When the mill is started without the strip 13 being connected to the reel 12 the motor DM speed is prevented from becoming excessive by means of the voltage developed across field winding 47 of generator LR which, should the speed of motor DM become excessive, predominates over windings 46 and 48 so that the output of the generator LR rises to energize the field winding 40 of the generator CR in such a direction as to lower the value of current for which regulation occurs thereby reducing the output voltage of the generator DG and limiting the speed of the motor DM. When the strip is wound on the reel the differential magnetomotive force of the windings 46, 47, 48 is reduced to substantially zero together with the energisation of the winding 40 so that the generator CR regulates the armature current of motor DM in the normal manner utilizing antihunting winding 37, constant voltage winding 38 and armature current winding 39. A further generator ER regulates the main field winding 28 of the motor DM in dependence on the speed of that motor and of the motor MM through windings 58 and 57, a current winding 59 and an anti-hunting winding 60 also being provided. When the strip is wound on the reel 12 and the motor DM is running faster than during the threading operation a rheostat 24 is so positioned as to energize relay DRC and consequently relay DR2 to insert resistance in the field winding of generator LR thereby reducing its sensitivity thus allowing the motor DM to operate at a greater value of over speed. In a modification, Fig. 2 (not shown), the field winding 40 of the generator LR may be connected in series with the armature 45, rectifier 50 and relay SLR contact the potential divider being omitted and an extra biasing field winding being inserted.
Patent GB-873168-A (GB)
Title: Photographic objective
IPC: G02B13/00
Filed: 1960-04-11
Abstract: 873,168. Optical objectives. ZEISS-STIFTUNG, CARL, [trading as ZEISS, C. [Firm of]]. April 11, 1960 [May 16, 1959], No. 12750/60. Class 97(1) A photographic objective which consists of five collective and two dispersive lenses, the two latter enclosing a diaphragm and being concave thereto and two of the collective lenses being in front of the diaphragm and three of them being behind it, is characterized in that : (a) the front lens is bent into meniscus shape and turns its more deeply curved surface towards the object; (b) the penultimate collective lens is bent into meniscus shape and turns its more deeply:curved surface towards the image; wherein n  z  is the arithmetical mean of the refractive indices of the dispersive lenses, n s  is the arithmetical mean of the refractive indices of the collective lenses, n 3  is the refractive index of the third lens, n 4  is the refractive index of the fourth lens, n 5  is the refractive index of the fifth lens, rs is the arithmetical mean of the numerical values of the radii of the two most powerful collective surfaces, D s  is the axial separation between the said two surfaces, B is the overall length, i.e., the axial separation between the first and the last surface, and f is the focal length of the objective. Optical data are given in the specification for one example in which the second and third lenses are cemented together as also are the fourth and fifth lenses, each doublet so formed being meniscus shaped and dispersive. Specification 793,651, Swiss Specification 287,608, and German Specifications 647,830 and 1,045,120 are referred to.