baber/WOPTO huggingface dataset:
Patent GB-186464-A (GB)
Title: Improvements in or relating to reciprocating engines
IPC: F02B75/28
Filed: 1921-07-18
Abstract: 186,464. Vickers, Ltd., and McKechnie, Sir J. July 18, 1921. Beam and lever engines; engines with two pistons reciprocat i n g oppositely within same cylinder.- An engine of the type described in Specification 165,861, in which two parallel cylinders each contain two oppositelymoving pistons and the pistons at the same ends of the cylinders are connected by rocking levers, while one piston in each cylinder is connected by a diagonal link to the piston at the opposite end of the other cylinder, is modified by the employment of a rocking lever at one end only, each piston being connected by a diagonal link to the piston at the opposite end of the other cylinder. Parallel cylinders A contain pistons provided with crossheads c, c<1> sliding in slots a in extensions A<1> of the cylinders. The cross-heads c, c<1> are connected by diagonal links D, E, each of which preferably consists of two side plates. The link D carries the gudgeon-pin d of the connecting-rod g, which may be guided by a cross-head d<1> sliding on guides on the engine frame. A lever H, pivoted on' a pin h<2> at either the upper or lower ends of the cylinders A, is connected by links h to the cross-heads c or c<1>. In a modification the link D is replaced by two links, connecting the gudgeon pin d to a lower cross-head c<1> and to one end of the lever H, respectively. In the modification shown in Fig. 4, the links h are replaced by pin-and-slot mechanism, pins h<3> on the lever H being pivoted in blocks h<4> sliding in slots in brackets c<4> on the pistons C. The brackets c<4> slide on an extension b<2> of the engine frame.
Patent GB-928166-A (GB)
Title: Etching process and improved etching bath
IPC: C23F1/42
Filed: 1960-06-02
Abstract: 928,166. Etching. DOW CHEMICAL CO. June 2, 1960 [June 12, 1959 (3)], No. 19496/60. Class 100 (2). An etching bath comprises a dilute strong acid, a water-immiscible organic fluid, and a filming agent, the last being an organic sulphonic acid or sulphonate, the hydrophobic portion of which consists of two or more organic radicals connected by an amide, ester or ether bridge, at least one of the radicals containing twelve or more carbon atoms in an uninterrupted series of carbon-to-carbon bonds. The proportions are acid 30-200 grams/litre, organic fluid 3-150 grams/litre, filming agent 0.2-20 grams/litre. The acid is nitric acid, to which may be added small amounts of sulphuric, hydrochloric or acetic acid. The organic fluid may be a hydrocarbon aromatic, aliphatic or naphthenic, B.P. 90-390‹ C., e.g. ligroin, kerosene, gas oils, diethylbenzenes, tetramethylbenzenes, diisopropylbenzenes, dodecylbenzene, turpentine, monochlorethylbenzene, ethylbutyl ketone, isophorone, methylhexyl ketone d-limonene,diisodecylphthalate,diamylnaphtha lene, dicapryladipate; in general, esters, ketones, terpenes, ethers. The filming agent may be a salt of an alkali metal, alkaline earth, ammonium or magnesium. The organic radicals may be aryl, cyclo aliphatic or aliphatic, such as hexylbenzene, dipropylbenzene, amyltoluene, ethylnaphthalene. Examples of filming agents are sodium n-methyl-n-(tall oil acid) taurate, sodium dioctyldiphenyloxide monosulphonate, sodium isopropyloleate sulphonate. Specifications 703,814, 709,315, 725,110 and 818,744 are referred to.
Patent GB-724239-A (GB)
Title: Improvements in machines for use in repairing valve seat faces
Inventor: SPENCE CHARLES ALBERT
IPC: B24B15/02
Filed: 1953-07-28
Abstract: 724,239. Universal joints. DEWRANCE & CO., Ltd.' July 28, 1953 [Aug. 1, 1952], No. 19520/52. Class 80 (2) [Also in Group XXIII]. In a valve-seat lapping machine, a block of rubber 8 is interposed between the rotatable lapping plate 4 and a drive plate 11; the rubber engages undercut walls 7, 10 in the plates 4, 11 respectively, the rim of the block being concave to facilitate insertion. The plate 11 is mounted on a driving spindle 13, and a screw 21 screwed into the end of the spindle loosely fits a central oversize hole 22 in the lapping plate 4.
Patent GB-376945-A (GB)
Title: Improvements in and relating to liquid level indicators
IPC: G01F23/76
Filed: 1931-07-07
Abstract: 376,945. Indicating liquid levels. CHLORIDE ELECTRICAL STORAGE CO., Ltd. and EDWARDS, F. R., Clifton Junction, near Manchester. July 7, 1931, No. 19539. [Class 123 (i).] A float a with hollow stem b, employed for indicating the acid level in electric accumulators, has the upper part c of the stem b of soft rubber to avoid breakage.
Patent GB-636664-A (GB)
Title: Improvements in and relating to cam devices for imparting varying feed-increments totool-holders of machine tools and the like displaceable elements of machines
IPC: B23G7/00
Filed: 1945-07-31
Abstract: 636,664. Securing elements to shafts. CASTELLI, X. F. July 31, 1945, No. 19595. Convention date, Feb. 10. Addition to 624,612, [Group XXVI]. Class 80 (ii)] An adjustable eccentric cam device of the parent Specification is secured to its shaft by providing the inner eccentric c with a tapered bore, for co-operating with a conical portion or bushing a of the shaft b, and a radial split c<1> so that screwing up of a nut j expands the inner eccentric to grip the outer eccentric and lock the assembly in any desired position on the shaft. The outer eccentric is maintained in axial relation to the inner by means of cheeks e and graduations are provided to enable any desired adjustment to be obtained quickly by manipulation of rods m and n on the outer and inner eccentrics respectively.
Patent GB-1424703-A (GB)
Title: Weft inserting channel members for jet weaving looms
IPC: D03D47/00
Filed: 1973-04-25
Abstract: 1424703 Jet looms VYZKUMNY A VYVOJOVY USTAV ZAVODU VSEOBECNEHO STROJIRENSTVI 25 April 1973 [27 April 1972] 19771/73 Heading DIE A confusor member 2 has at least two fluid discharge jets 5 to assist the main picking jet, the circumferential length a of each jet being larger than its radial width b and the spacing c between each jet being at least the circumferential length of the jet. Each jet 5 may be replaced by a number of circular jets (Figure 5, not shown).
Patent GB-619852-A (GB)
Title: Improvements in circuits for controlling d.c. motors
IPC: H02P7/26
Filed: 1945-08-01
Abstract: 619,852. Rectifying; automatic control systems. GENERAL ELECTRIC CO., Ltd., and JACOBY, H. C. E. Aug. 1, 1945, No. 19781. [Classes 38 (ii) and 38 (iv)] [Also in Group XXXVII] In a control system comprising a gridcontrolled rectifier for supplying a D.C. motor, a saturable reactor for controlling the phase of a voltage applied to the grid of the rectifier, and means for adjusting the current in the saturating winding of the reactor, an electron discharge valve is connected so that its anode current passes through said saturating winding, and an electromagnetic relay, arranged to be operated upon the armature current exceeding a predetermined value, is adapted, when so operated, to apply a bias voltage to a control electrode of the discharge valve so as to reduce the output of the rectifier. The armature 24 of a D.C. motor is supplied from A.C. mains through two grid-controlled rectifying valves 3 and 4, the phase displacement between the grid and cathode voltages of these valves being varied in accordance with the current in the D.C. winding 7 of a saturable reactor 35. The saturating winding 7 is connected in series with a control valve 15 the anode current of which is derived from a transformer secondary winding 9 through rectifiers 10 and a smoothing circuit 11. A motor field winding 12 is supplied through a variable resistor 36 from the winding 9. The screen grid voltage of the valve 15 is obtained through the rectifiers 10, a stabilizing neon tube 14 being provided. The bias voltage which is normally applied to the control grid of the valve 15 has two opposing components. The first is derived from an adjustable portion of a resistor 20 which is shunted across the motor armature, and the second is obtained from a part of a resistor 21 which is connected in series with the motor armature. Any deviation of the motor speed from a value corresponding to that set by a tapping 23 of the resistor 20 so alters the grid bias of the valve 15 that the voltage-supply to the motor-armature is adjusted to oppose such deviation. Variations in the motor armature current due to variations of load are likewise opposed through control of the valve 15 by the grid bias component derived from the resistor 21, it being possible to adjust a tapping 22 of the resistor 21 so that the motor speed remains substantially constant despite wide load variations. If an overload occurs the relay winding 18 responds to open contact 17 and the connection to the grid of the valve 15 is transferred to a tapping 33 of the resistor 21. The current passed by the valve 15 is reduced and the motor armature current is limited to a safe value. A rectifier 40 and a condenser 41 provide smoothing. The heater circuit of the valve 15 comprises a switch 26A which is closed simultaneously with the motor armature switch 26 so that gradual starting of the motor is provided due to the slow heating of the valve.
Patent GB-313337-A (GB)
Title: Improvements in golf clubs
IPC: A63B59/00
Filed: 1928-07-07
Abstract: 313,337. Donaldson Manufacturing Co., Ltd., and Hadden, W. J. July 7, 1928. Golf clubs; handles.-In a golf club of the kind wherein the shaft, the head and/or the grip are clamped together by circumferentially-variable means, a locking-device is provided between the clamping means and the head and is incorporated in an adjustable attaching means for the grip. As described in Specification 278,142 the head of the club has a socket portion 2<a> with four longitudinal slits 4 so that the socket may be clamped upon the plugged end 11 of the hollow steel shaft 1 by means of a screwed ferrule 14 after the shaft has been screwed into the bottom of the socket. According to the invention the slits 4 open out into recesses 6 and an intermediate clutch sleeve 7 is interposed between the shaft and the ferrule 14. The clutch sleeve is prevented from rotating on the shaft by a cross pin 8 and has two projections 10 engaging in the recesses 6. The interposed clutch sleeve thus locks the head to the shaft after tightening up the clamping ferrule 14. The grip, as described in Specification 278,142 comprises a hollow metal sleeve 15 slidable, without rotation, upon the shaft, and (after adjustment by a screw 25) capable of being clamped by a screwed ferrule 18 engaging the split end of the sleeve. The knurled head 26 of the adjusting screw 25 is, according to the invention provided with a screwed boss 27 engaging the plugged end of the sleeve so that when the knurled head comes against the end of the sleeve the threads on the boss produce a locking action and prevent further rotation of the screw 25. A graduated scale 30 on the shaft facilitates setting of the grip.
Patent GB-201939-A (GB)
Title: Improvements in or relating to electronic discharge tubes
IPC: H01J1/15
Filed: 1923-08-03
Abstract: 201,939. Compagnie pour la Fabrication des Compteurs et MatÚriel d'Usines Ó Gaz, (Assignees of Soc. des Etablissements Ducretet (Maison E. Roger et Cie GÚnÚrale de Mesure RÚunies)). Aug. 7, 1922, [Convention date]. Vacuum tubes.-In order to give a constant emission of electrons from a cathode heated by alternating current a cathode of considerable heat capacity is employed, absorbing in normal working a minimum current of 1.5 amperes at a maximum tension of 3 volts. The heat capacity may be increased by the addition of small polished masses m, at the ends of the filament f, the supports s being as fine as possible. The Specification as open to inspection under Sect. 91 (3) (a), comprises also two or more .cathodes f<1>, f<2> Fig. 1 (Cancelled) connected to separate phases of a polyphase supply. This subject-matter does not appear in the Specification as accepted.
Patent GB-938780-A (GB)
Title: Process for polymerising aliphatic alpha-mono-olefins
IPC: C08F10/00
Filed: 1962-05-24
Abstract: Aliphatic alpha-mono-olefines are polymerized in the presence of a stereo-specific catalyst system based on aluminium dialkyl monohalides, activated titanium trichloride and (RZnX)n where X is a halogen, e.g. chlorine, R is an up to C4 alkyl group, e.g. ethyl, and n shows that the product is in associated or polymerized form and has an undefined molecular weight. The olefine may be propylene and the aluminium catalyst may be the diethyl monochloride.  The zinc catalyst is produced by reacting 1 or 1,15 mol. ZnX2 with 1 mol. ZnR2 (where R and Z are as before).  The concentration of the zinc catalyst may be kept constant in the polymerization medium, e.g. heptane, by feeding a dilute solution of RZnX in a liquid hydrocarbon.  The polymer may be washed with methanol.  The polymers may be used to form fibres, films and other articles.
Patent GB-201393-A (GB)
Title: An improved cleansing composition
IPC: C11D10/06
Filed: 1922-07-21
Abstract: Cleansing-compositions are prepared by combining 8 lb. of fat with 2 lb. of caustic soda dissolved in 3 pints of water, and mixing in 2 lb. of whiting, 1 lb. of fuller's earth, 1 lb. of panama wood bark, 1 1/2 pints of ammonia, 1/4 lb. each of bicarbonate of soda and potash, and sufficient water to make a paste.  According to the Provisional Specification, potash is used with the soda, and the bicarbonates are omitted.
Patent GB-1274420-A (GB)
Title: Selector levers for variable ratio transmissions of motor vehicles
Inventor: OEHL ADOLF
IPC: B60K20/02
Filed: 1971-04-19
Abstract: 1,274,420. Change-speed control; levers. GENERAL MOTORS CORP. 19 April, 1971 [27 Jan., 1970], No. 20136/71. Headings F2D and F2K. A gear shift or automatic selector lever 15 for manual or automatic transmissions comprises a one-piece plastics upper lever member 19 resiliently mounted by rubber or plastics damper blocks 23, 24 on a metal lower lever member 17 whith extends into the gear box housing extension (12) (Fig. 1, not shown), the plastics upper lever member 19 being insensitive to high temperatures generated in the gear-box and transmitted to the metal lower lever member 17. The onepiece plastics upper lever member 19 may be produced either by injection-moulding or by extrusion and may be of glass fibre-reinforced polyamide plastics or of acrylonitrile-butadienestyrene plastics, and be covered with a resilient surface layer 9 of soft elastic polyvinyl chloride, and may be provided either entirely or partially with a finely grained coloured finish of slight surface roughness to impart a leather-like appearance to ensure a better grip. A decorative member 35, bearing for example the gear shift pattern may be snapped or otherwise fitted into a hollow recess in the integral knob 20 (Figs. 3 and 4) and serve to retain a vibration-damper lead weight 44 in vibration free engagement with a frusto-conical internal surface of the knob 20. In Fig. 5, a spring loaded reverse blocker pressbutton 45 is additionally incorporated in the knob 20, the press-button operating the reverse blocker via a control rod 46 extending downward through the lever assembly.
Patent GB-729700-A (GB)
Title: Improvements in or relating to screened electric cables
Inventor: PERGUNAS SIDNEY WILFRED
IPC: H01B11/18
Filed: 1953-07-21
Abstract: 729,700. Cables. ASSOCIATED TECHNICAL MANUFACTURES, Ltd. Sept. 14, 1953 [July 21, 1953], No. 20144/53. Class 36. In a screened cable, the screen 12 comprises at least one pair of metallic tapes or wires applied in open helices, one of each pair being applied over the other and with 'the opposite direction of lay to the other. The screen preferably comprises tapes of copper or other non- ferrous metal, but tapes or wires of ferrous metal may be used.
Patent GB-728842-A (GB)
Title: Improvements in or relating to microphones
Inventor: BIAL WOLFGANG
IPC: H04R17/02
Filed: 1952-08-11
Abstract: 728,842. Microphones. ROTHERMEL, Ltd. Aug. 28, 1953 [Aug. 11, 1952], No. 20213/52. Class 40 (4). A piezo-electric microphone comprises two conical diaphragms 1, 2 with a rectangular, twistertype crystal 11 located therebetween, two diagonally opposite corners of the crystal being directly attached to one diaphragm, while the remaining corners are attached by drive pins 9 to the other diaphragm. The diaphragms are of different size and are mounted by their flanges 3, 7 on opposite faces of an insulated annulus 8 formed of paper impregnated with synthetic resin. To avoid contact with the drive pins, diaphragm 2 is formed with localized bulges 12. In a modification, felt discs 14 are inserted to effect damping and to reduce the internal air space. Glue is employed to secure the various parts together.
Patent GB-659088-A (GB)
Title: Improved production of unwoven fabrics
IPC: D04H1/72
Filed: 1948-07-29
Abstract: 659,088. Opening fibres; lap-forming apparatus. WEST POINT MANUFACTURING CO. July 29, 1948, No. 20232. Convention date, Nov. 18, 1947. [Class 120(i)] [Also in Group VIII] A machine for manufacturing unwoven fabrics comprises a device supplying fibres to a fibre transfer duct traversed by an air current which carries the fibres to a foraminous member on which they are deposited by the current to form a matted web, the fibre supply device having a velocity ratio of at least 500 between the feed-in speed of the fibres to the device and their speed of delivery by the device to the transfer duct, the supply device having a high speed supply surface substantially normal to the axis of the duct which has a side air inlet arranged to direct the entering air transversely to the inlet end of the duct. As shown, fibre is fed from a lap 11 by a take-in 16 to a card cylinder 17 from which it is removed by a high-speed doffer 20 rotating at a peripheral speed 500 to 1,500 times that of the taker-in. The fibre is removed from doffer 20 by an air stream passing through an inlet 26 transversely into a duct 25 which is of uniform crosssection and has transparent inspection panels 31, inlet 26 being provided with a screw-adjustable gate 27 for regulating the strength of the air stream. The fibres are deposited on a cylindrical screen 33 rotating in a casing 32 and provided with a stationary internal shield 42. The air stream passes through an opening 43 in shield 42 and out through exhaust connections 44, at the ends of casing 32, leading to a fan 46. Flexible sealing strips 47 and a sealing roller 48 are provided at the end of duct 25, and flexible seals are also provided at the ends of the screen 33, casing 32 and shield 42. The speed of rotation of screen 33 is variable to control the thickness of the fibre web deposited thereon. The width of the web may be varied up to the full width of the screen by using ducts with outlets of different widths; it may be formed in a narrow width, being stripped from screen 33 by a doffing roll and collected in a sliver can. Alternatively, the web may, as shown, be stripped from screen 33 by a flexible, porous belt 63 of cloth, woven wire or the like and subjected to a bonding treatment (see Group VIII).
Patent GB-371235-A (GB)
Title: Instrument for indicating the transverse position corresponding to the state of movement, and the direction of travel above ground, for air and water craft with gyroscope pendulum
IPC: G01C19/44
Filed: 1931-07-15
Abstract: 371,235. Gyroscopic apparatus. GES. FUR ELEKTRISCHE APPARATE, Marienfelde, Berlin.-(Assignees of Boykow, J. M. ; 2, Fontanestrasse, Lichterfelde, Berlin.) July 15, 1931, No. 20353. Convention date, July 16, 1930. [Class 97 (iii).] For indicating the transverse position and alterations in the direction of travel of air and water craft a gyroscope mounted in a pendulum with its axis of rotation at right-angles to the direction of travel and with a vertical precessional axis is after a predetermined deflection damped in accordance with the precessional velocity, a second gyroscope with horizontal axes of rotation and precession and combined with a switch controlling means for exerting a correcting moment upon the precessional axis of the first gyroscope being provided. In the form shown, a frame 2 swings about an axis 3 situated horizontally in the direction of the aircraft's flight I. Mounted in the frame 2 with horizontal axes of rotation perpendicular to the direction of flight are the principal gyro 4 and if desired the correcting gyro 5, the former having a vertical axis of precession 8 and the latter a horizontal axis of precession 15. On the precessional axis 8 is an arm 9 with a pin 10 projecting into the recess of a fork 11 which is connected to a liquid damping device 14 and is engaged by a centralizing spring 12. The precessional axis 15 which may be similarly connected to a damping device 19 carries a contact arm 16 coacting with contacts 17 on the frame 2 and working between stops 18. A torque is applied to the gyro 4 to compensate for the influence of the earth's rotation bv the action of the magnetic field of a pair of coils 22 on an armature 20 fixed on the axis 8. Within the freedom of movement of the pin 10 in the fork 11 the arm 9 indicates the amount of variation in the direction of travel. When the aircraft is intentionally run in a curve the pin 10 is rapidly brought against the fork 11, precessional freedom about the axis 8 being thus limited, and the pendulum adjusts itself to the resultant of gravity and centrifugal force. The switches 16, 17 of the gyro 5 close the circuit of coils 23 exerting through the armature 20 a correcting torque on the gyro 4 if for any reason the pendulum should hang at an inclination during straight flight.
Patent GB-516823-A (GB)
Title: Improvements in or relating to yarns or threads and the manufacture thereof
IPC: D06M11/05
Filed: 1938-07-09
Abstract: 516,823. Yarns. TAYLOR, W. I., and GIBBINS, L. B. July 9, 1938, No. 20369. [Class 120 (ii)] [Also in Group IV] A yarn comprising filaments or fibres of flat cross section of a delustrable organic derivative of cellulose is crinkled by subjecting it at spaced intervals along its length to an aqueous boiling treatment; the filaments or fibres may contain cellulose acetate and there may be a colour difference between the crinkled and uncrinkled portions. The parts of the yarn to be protected against the action of the aqueous boiling treatment may be strained, may be coated with a high melting wax, gum or resin or by clips formed of rubber or other impermeable flexible material adapted to be wrapped around and tightly secured thereto. As shown a hank 2 on the swift 1 has clips 3 secured thereto at the part to be protected and the clips may be formed with apertures so that at the generally protected parts, ' a part 8 is exposed to the aqueous boiling treatment; the clip is formed with a pair of wings 4, 5 secured by press fasteners 7 to the main part of the clip. The aperture in the clip may be of various shapes to vary the effective end of the clip and the sides of the clip may be tapered. Specifications 371,910 and 491,259 are referred to.