baber/WOPTO huggingface dataset:
Patent GB-320187-A (GB)
Title: Improvements relating to dash-pot damping devices
IPC: F16F9/512
Filed: 1928-08-22
Abstract: 320,187. Gowan, S., and Associated Electrical Industries, Ltd. Aug. 22, 1928. Addition to 284,062. Dashpots.-The construction described in the parent Specification is modified by arranging the bye-pass so that the auxiliary piston and cylinder or a diaphragm forming one side of a chamber close a valve when the pressure in the main cylinder falls below a certain limit. In the form shown in Fig. 1, the tapered cylinder 1 of the dashpot is connected to the pull rod 2 and the co-operating piston 3 is mounted upon a support 4, the whole being immersed in oil. When the pull rod 2 and piston 1 are raised, the pressure in the cylinder is reduced and oil flows in through the central passage 10 in the auxiliary piston 7, the position of which is controlled by a spring 12. Only a limited resistance is thus offered to the applied force, but when the force is applied with sufficient violence to reduce the pressure in the cylinder 1 below a certain value, the corresponding reduction in pressure in the auxiliary cylinders 6 will cause the auxiliary piston 7 to be drawn into its cylinder against the resistance due to the weight and to the pull of the spring 12. The ball 9 is thereby forced on to its seat thus preventing further entry of oil to the cylinder 1 and increasing the resistance to relative movement of the main cylinder 1 and piston 3. Movement of the pull rod 2 in the reverse direction is free since the oil in the cylinder 1 easily escapes through the one-way valve 16. In the modification shown in Fig. 4, a diaphragm 24 to which a valve 25 is attached replaces the auxiliary piston. When the pull rod 2<1> is moved upward sufficiently quickly, the drop of pressure in the main cylinder and in the auxiliary chamber causes movement of the diaphragm which closes the valve 25 and prevents the entry of oil through the passage 31. Modifications of both the piston and diaphragm constructions are illustrated.
Patent GB-171769-A (GB)
Title: Improvements in apparatus for automatically delivering food or other material at predetermined periods
IPC: A01K39/012
Filed: 1920-08-19
Abstract: 171,769. Moffitt, F. W. Aug. 19, 1920. Moving-chamber apparatus. - Appartus for delivering poultry and like food or other material at certain intervals comprises a counterbalanced rocking lever l operated by water or finely divided material and connected to a bottomless compartmental box f so that one compartment is discharged through an aperture e in the base plate c at each movement of the rocking lever, or to a perforated slide moving beneath a hopper. The water or other operating material flows in a regulated stream from a tank t into a receiver m on the lever l until the weight n is overbalanced and the lever tilts, causing the water &c. to be discharged from the receiver m. The lever l is connected to the box f by a ratchet h with teeth or studs coacting with a pawl p carried by an arm o on the lever l, or where a perforated slide is employed this is connected to the arm o by a link.
Patent GB-1090177-A (GB)
Title: Improvements in catalytic hydrogenation
IPC: C07C5/05
Filed: 1966-05-31
Abstract: The selective hydrogenation of conjugated diolefins (acyclic or cyclic) to the corresponding monoolefins is effected in the presence of a catalyst comprising platinum sulphide, palladium sulphide or ruthenium sulphide.  The catalyst may be supported, e.g. on carbon or alumina.  Diolefins which may be hydrogenated include 1,3-butadiene, 1,3-pentadiene, isoprene, 2,3 - dimethyl - 1,3 - butadiene, 1,3 - cyclopentadiene, 1,3 - cyclohexadiene, 1 - methyl - 4 (or 5) - isopropyl - 1,3 - cyclohexadiene, and 1,3-cyclooctadiene.  The process may also be used to remove diolefin impurities from monoolefins, e.g. butadiene from butenes.
Patent GB-294791-A (GB)
Title: Improvements in racquet handles
IPC: A63B49/08
Filed: 1927-09-15
Abstract: 294,791. Morrison, W. G. Sept. 15, 1927. Handles.-The handle 3 of a tennis or like racket is tapered from the butt 4 inwardly, and has a highly polished surface. The handle is preferably oval in crosssection and is covered with smooth highly polished skin or other material.
Patent GB-416372-A (GB)
Title: Improvements in or relating to the control of attenuation in alternating current transmission systems such as telephone or like systems
IPC: H04B3/20
Filed: 1933-03-01
Abstract: 416,372. Two-way repeaters. RYALL, L. E., 52, Crescent Gardens, Eastcote, Middlesex. March 1, 1933, No. 24310 /34. Divided out of 415,767. Drawings to Specification. [Class 40 (iv).] In a two-way repeater each path includes an attenuation network comprising metal rectifiers arranged as series and/or shunt elements and variably controlled by the anode current of a valve in dependence on A.C. signals flowing in the other path. The detailed description is identical with that of Specification 415,767.
Patent GB-1084587-A (GB)
Title: Improvements in or relating to modulator circuit arrangements
Inventor: KELLET IAN PETER
IPC: H03C1/36
Filed: 1965-06-09
Abstract: 1,084,587. Transistor amplitude modulating circuits. GENERAL ELECTRIC CO. Ltd. June 9, 1966 [June 9, 1965], No. 24396/65. Heading H3R. A suppressed carrier modulating circuit comprises a tapped inductance 7 shunted by a resistance 6 and arranged in series between modulation input terminals 1, 2 and the output load 5, the centre of tap of inductance 7 being switched at carrier frequency to the terminal 2. In the circuit shown, when the transistor 8 is cut off the resistance 6 has a lower impedance than inductance 7 and the input is in effect connected to the output. When transistor 8 conducts the inductance 7 acts as a transformer and the output across load 5 is reversed in phase. With the carrier applied to terminal 9 the output is reversed in phase at carrier frequency and represents a double-sideband suppressed carrier signal. The transistor 8 may be replaced by a diode bridge, and the direct connection between terminals 2 and 4 may be replaced by a second tapped inductance shunted by a second resistance, the switching means connecting the taps of the two inductances.
Patent GB-799391-A (GB)
Title: Improvements in and relating to the use of extended surfaces for the transfer of heat from one fluid to another
Inventor: STRAUS ROLF
IPC: F28F1/36
Filed: 1954-08-23
Abstract: 799,391. Tubular heat-exchange elements. BOULTON & CO. Ltd., E. W. Aug. 23, 1955 [Aug. 23, 1954], No. 24443/54. Class 64(3) A heat transmitting element consists of a tube 1 having wound spirally upon its surface a strip of heat conducting material comprising an inner edge 4 in heat conducting relationship with the tube and separated from a continuous outer edge 3 by interconnecting spokes 2. The finned tube may be contained in a casing through which air passes to cool a fluid such as water or steam flowing through the tube 1. Other uses mentioned are the transfer of heat between a gas and a refrigerant and the cooling or heating of petroleum products with air or gases. According to the Provisional Specification the spokes may be bowed slightly out of the plane of the strip and wire mesh may be substituted for the spokes.
Patent GB-868936-A (GB)
Title: Lubricants
Filed: 1957-08-02
Abstract: Ethers within the general formula  R1=O=C2H4=O=R2  wherein R1 is an ankyl or cycloalkyl group containing 1 to 12 carbon atoms and R2 is an alkyl, alkenyl, cycloalkyl, cycloalkyl-substituted alkyl or aralkyl group containing 2 to 18 carbon atoms or the formula: R3=(OC2H4)2=O=R4  wherein R3 is a C3-10 alkyl group and R4 is an alkyl, cycloalkyl or aralkyl group containing 5 to 20 carbon atoms or the formula:  R5=(OC2H4)3=O=R6  wherein R5 is an alkyl or cycloalkyl-substituted alkyl group containing 3 to 8 carbon atoms and R6 is an alkyl, cycloalkyl or aralkyl group containing 5 to 16 carbon atoms, the values of R1-6 being so selected that the ethers contain a total of 10 to 27 carbon atoms and a boiling point of at least 180 DEG C. at atmospheric pressure, are prepared by reacting a monosodium or potassium derivative of the appropriate glycol with a suitable halo-hydrocarbon to form an ether-alcohol which is then similarly reacted in the form of its alcoholate with a halo-hydrocarbon to give the desired glycol diether.  The ethers of which a large number of examples are given, are components of lubricating oils (see Group III).ALSO:Lubricating compositions comprise a lubricating oil and at least 5% by weight of one or more of those ethers having a total of 10 to 27 carbon atoms and a boiling point of at least 180 DEG C. at atmospheric pressure which fall within the general formula R1-O-C2H4-O-R2 wherein R1 is an alkyl or cycloalkyl group containing 1 to 12 carbon atoms and R2 is an alkyl, alkenyl, cyclo alkyl, cycloalkyl-substituted alkyl or aralkyl group containing 2 to 18 carbon atoms, or the general formula R3-(OC2H4)2-O-R4 wherein R3 is an alkyl group containing 3 to 10 carbon atoms and R4 is an alkyl, cycloalkyl or aralkyl group containing 5 to 20 carbon atoms or the general formula R5-(OC2H4)3-O-R6 wherein R5 is an alkyl or cycloalkyl-substituted alkyl group containing 3 to 8 carbon atoms and R6 is an alkyl, cycloalkyl or aralkyl group containing 5 to 16 carbon atoms.  The lubricating oils used with the ether may be mineral lubricating oils, chlordiphenyl oils, silicones or synthetic ester lubricants.  The ethers themselves have lubricating properties. Examples describe lubricant compositions comprising (1) benzyl-propyl-triglycol ether, di-2-ethylhexyl sebacate, lauryl polymethacrylate and minor amounts of tricresylphosphate and phenyl a -naphthyl amine; (2) dodecyl n-butyl-triglycol ether, tetraoctyl pentacrythritate and minor amounts of lauryl polymethacrylate and tricresyl phosphate. The compositions are useful as lubricants for gas turbines. Numerous other suitable ethers are listed.  Their preparation is described (see Group IV(b)).
Patent GB-1293387-A (GB)
Title: Actuator assemblies
Inventor: FLETT ALEXANDER
IPC: B23Q1/70
Filed: 1969-05-14
Abstract: 1293387 Chucks MOLINS MACHINE CO Ltd 14 May 1970 [14 May 1969] 24632/69 Heading B3B [Also in Division F2] An actuator assembly for a machine tool comprises an hydraulically actuated chuck 1 carried by a spindle 2 which is rotatably mounted in at least one hydrostatic bearing 3, the bearing having a plurality of recesses 8 circumferentially spaced around the spindle and contained in a plane perpendicular to the axis of the spindle, an axial passage 16 in the spindle extending to at least two radial passages 14, 15 which are in the plane of the recesses and communicate with the outer surface of the spindle, each radial passage having a flow restrictor therein and being angularly spaced from each other such that at any time at least one of them is in communication with a recess, whereby upon rotation of the spindle pressurized fluid is supplied by each recess in turn through the radial and axial passages to actuate the chuck. A second hydrostatic bearing 4 may be provided adjacent the bearing 3 and/or at the other end of the spindle and separate sets of passages may be provided in the bearings 3 and 4 for pressure and return lines to the chuck.
Patent GB-660201-A (GB)
Title: Improvements in or relating to a printing device
IPC: B41L47/02
Filed: 1948-09-21
Abstract: 660,201. Printing surfaces. ADDRESSOGRAPH - MULTIGRAPH CORPORATION. Sept. 21, 1948 [Oct. 8, 1947], No. 24668/48. Class 100 (ii). [Also in Group XV] A printing device comprises an index sheet or card C, a printing member or plate P and a retaining member R on either side thereof, one of the members (as shown P) having extensions 20-23 extending through openings 37-40 and overlying portions of the other member (R) limit outward movement and the other member (R) having projections 33, 35 between the extensions 20, 21 and 22, 23 to limit transverse movement. The type T is embossed on the plate P and may read correctly either in intaglio or in relief. The retaining member. R is of slightly flexible material to allow removal or insertion under the flanged extensions 20-23 and the plate P and member R may be transferred from one card C to another.
Patent GB-981979-A (GB)
Title: A self-excited oscillator for producing mechanical vibrations
IPC: H03B5/40
Filed: 1963-06-21
Abstract: 981,979. Vibrator supply arrangement. INTERNATIONAL BUSINESS MACHINES CORPORATION. June 21,1963 [June 22, 1962], No. 24693/63. Heading G4F. [Also in Division H3] A self excited oscillator for producing mechanical vibrations comprises a magneto-strictive quarter wave resonator 1, an amplifier circuit including an excitation coil 2 mounted on resonator 1 and a positive feedback capacitor 4 tending to promote oscillations in the amplifier circuit, and a positive feedback coil 5 mounted on resonator 1 and coupled to the amplifier to ensure, by inverse magneto-strictive effect, that the oscillation in the amplifier is at a frequency equal to the resonant frequency of resonator 1. In the embodiment Fig. 1 the amplifier is a PNP transistor and a screen 6 shields the feedback coil from the exciting coil.
Patent GB-1436977-A (GB)
Title: 7-alkylthioacetamido cephaosporins
IPC: C07D501/36
Filed: 1974-06-04
Abstract: 1436977 7-Alkylthioacetamide cephalosporin SMITHKLINE CORP 4 June 1974 [4 June 1973] 24715/74 Heading C2C Novel compounds of the Formula (I) wherein R is C 1-6  alkyl; M is H or an alkali metal or ammonium cation; and A is CH 2 SHet, where Het is a 5- or 6-membered heterocyclic ring containing 2 to 4 atoms selected from N, O and S, unsubstituted or substituted with one or two groups selected from C 1-4  alkyl, C 1-4  alkoxy- C 1-4  alkyl or CF 3 , are prepared by acylation of an aqueous solution of the sodium salt of the appropriate 7-aminocephalosporanic acid nucleus, where A = CH 2 SHet, with an appropriately substituted alkylthioacetic acid chloride. The 7-aminocephalosporin compound where A = CH 2 SHet is prepared by known methods from 7-aminocephalosporanic acid and the appropriate heterocyclic mercaptan compound. Pharmaceutical compositions possessing antibacterial activity against both Gram-positive and Gram-negative organisms comprise compounds of the Formula I together with a pharmaceutically acceptable diluent or carrier.
Patent GB-1112343-A (GB)
Title: Hoppers
Inventor: DEAN ROBERT
IPC: B65D90/62
Filed: 1965-06-11
Abstract: 1,112,343. Hoppers; load handling pallets. FISONS FERTILIZERS Ltd. 28 June, 1966 [11 June, 1965], No. 24744/65. Headings B8H and B8S. A hopper for powdered or granular material, e.g. fertilizers, has a sloping floor 2, Fig. 1, a front wall 3 and a discharge passage 4 which is divided into two conduits each being controlled by a flap valve 5, a shoot 9 being pivoted at the outlet of the passage. The hopper body 1 is of glass reinforced resin and is mounted within a steel framework 10 having channels 11 for loading the hopper on to a vehicle by a fork-lift truck. Each valve 5 has a rubber wiping blade 6 and is mounted for pivotal movement on a rod 7 controlled by a lever (8), Fig. 2 (not shown). The shoot 9 is hinged to the body 1 and may be moved to cover the passage 4. The hopper top 12 has a manhole 13 closed by a lid 14. The flap valves may be operated together or separately. The framework has legs of a length to ensure that the passage 4 is above the sides of a carrying vehicle. Several hoppers may be carried on a vehicle for discharge over both of its sides. The body 1 may be of sheet steel. Means may be provided for engaging with an overhead lifting system.
Patent GB-284745-A (GB)
Title: Improved gearing for producing a progressively varying reciprocatory or oscillatory motion
IPC: F16H37/12
Filed: 1926-10-06
Abstract: 284,745. Bentley, P., Jones, F. H. Haslam-, and Hollins &. Co., Ltd., W. Oct. 6, 1926. Converting rotary into oscillating or reciprocating motion.-Reciprocating or oscillating motion of progressively decreasing and increasing stroke, for application or example to the traverse bar or other reciprocating element in textile machinery, is transmitted for example to a bar e from a rotary shaft g. Gear-wheels A, B of different diameters are secured eccentrically, one adjustably on the shaft g and the other on an axle d carried in a bracket! f on the base e. The shaft g may be rotated by worm gearing h. Mesh between the wheels may be maintained by a spring c or by a link engaging pivots concentric with the wheels. In a modification, a second eccentric driven wheel carried by a second bracket on the bar e or by a lever pivoted to the wheels A, B may engage the opposite side of the wheel A, or the second eccentric wheel may be replaced by a wheel concentric with its pivot.
Patent GB-532417-A (GB)
Title: Improvements in or relating to aircraft radio installations
IPC: H04B1/034
Filed: 1939-08-29
Abstract: 532,417. Aircraft radio insinuations. MARCONI'S WIRELESS TELEGRAPH CO., Ltd., and COCKERELL, C. S. Aug. 29, 1939, No. 24839. [Class 40 (v)] An aircraft radio installation comprises a housing and a plurality of internally wired radio units, for example two receivers a1, a2 and two transmitters b1, b2, mounted within said housing, said units being interconnected by wiring incorporated in a wiring channel, duct, or unit E also included in said housing, the radio units being withdrawable as units from their compartments A, B and when in position being connected to the interconnecting wiring by means of plug and socket or other complementary contact devices. As shown, the housing also includes bottom compartments C, D suitable for power supply units and spare parts, a lower extension F of the wiring channel E, and intermediate compartments H, I suitable for headphones, telegraph keys, writing materials and such like when not in use. The upper part of the housing is closed by a cover G hinged along the bottom and comprising a lower and an upper part hinged together, so that the cover when opened may constitute a table. A telegraph key L may be fitted on slides so as to be adjustable to a convenient position for the operator.
Patent GB-988766-A (GB)
Title: Arrangement for releasably securing two parts together
IPC: F16B2/06
Filed: 1963-06-21
Abstract: 988,766. Knobs. H. L. NAIMER. June 21, 1963 [July 23, 1962], No. 24861/63. Heading A4U. [Also in Divisions B3 and F2] A knob 16 is secured on a spindle 10 by a split conical bush 12 of the flow deformable material, such as superpolyamide, zinc or aluminium, which is drawn into a socket in the knob by an axial screw 14 to press the bush against the ribs 10a on the spindle.
Patent GB-748871-A (GB)
Title: Heat-treatment of alloys containing zinc and aluminium with a tendency to form dendrites on solidification
IPC: C22F1/16
Filed: 1952-10-03
Abstract: A method of improving the toughness of aluminium-zinc alloys containing at least 20 per cent aluminium which on solidifying tend to produce dendrites, comprises annealing the alloy at a temperature between 300 DEG C. and the melting point for 1-3 hours and cooling at a rate not exceeding 5 DEG C. per minute.  The cooling may be carried out immediately after casting or the casting may be cooled and reheated to the annealing temperature.  The alloys treated may contain 20-50 per cent Al; up to 5,0 per cent Cu; up to 0,2 per cent Mg; and the balance Zn and unavoidable impurities.  The preferred annealing range is 300-400 DEG C. and the cooling rate below 1 DEG C. per minute.
Patent GB-284958-A (GB)
Title: Improved manufacture of sodium sulphide
IPC: C01B17/36
Filed: 1927-09-21
Abstract: 284,958. Laporte, Ltd., B., (Schlaugk Ges., M.). Sept. 21, 1927. Sodium sulphide solutions are freed from iron by treatment with a cyanide, for instance, by heating to 85‹-90‹ C. with 0.2-1.0 per cent of sodium cyanide, and settling or filtering. Substantially colourless crystals are obtained from the separated solution.
Patent GB-743374-A (GB)
Title: Improved means for attaching a rotary brush to the rear of a tractor or like vehicle
Inventor: WILLIAMS VERNON VALENTINE
IPC: E01H1/05
Filed: 1953-09-09
Abstract: 743,374. Sweeping-machines. YOUNG (MOTORS), Ltd., H. Sept. 9, 1954 [5ept. 9, 1953], No. 24971/53. Class 107. A brush attachment to be used with the normal 3 point linkage (m, p) and power take-off provided on a tractor or like vehicle, comprises a brush b rotatably mounted in a frame a. The frame may be inserted in the fitting e to reverse the direction of rotation of the brush, the brush being driven through a chain c1 and a take-off shaft d. The fitting e is carried on a pivoted quadrant g<SP>2</SP> for transverse angular adjustment and this in its turn is carried at o for further adjustment. The frame j<SP>1</SP> engages the tractor linkage by means of link pins. A scoop may be fitted if desired, and a water spray fed from the propelling vehicle may be arranged on the device.
Patent GB-502358-A (GB)
Title: Improvements in or relating to television receivers
IPC: H04N1/50
Filed: 1937-09-14
Abstract: 502,358. Television. CARPMAEL. A. (Velde, H. R. C. van de) Sept. 14, 1937, No. 25019. [Class 40 (iii)] The scene is successively scanned to produce signals corresponding to different primary colours, and at the receiver a cathode ray distributer 14 is controlled by synchronizing signals to render parallel channels CCR, CCY, CCB operative in turn; each channel is appropriated to a primary colour, is terminated by a light-valve LVR, LVY, LVB, and is fed from the common receiver 13. The valves VR, VY, VB are normally biassed to cut-off, and the bias is overcome when the cathode ray impinges on electrode 19, 20, 21. The synchronizing signals are preferably of different length, Fig. 2, (not shown) ; the light-valves are preferably of the supersonic type ; and the scannings are preferably interlaced.
Patent GB-1059052-A (GB)
Title: Improvements in or relating to an ornamental snap fastener assembly
Inventor: ASH CHARLES FREDERICK
IPC: A44B17/00
Filed: 1965-05-27
Abstract: 1,059,052. Snap fasteners. SCOVILL MANUFACTURING CO. May 27, 1965, No. 25024/ 65. Heading E2B.  An oranmental snap fastener assembly comprises a fastener member consisting of pliable thermoplastic material having a base 11 adapted to bear against the inner surface of a piece of flexible supporting material, a snap fastener head 13 projecting from said base and having radially yieldable portions 14 adapted for engagement with a mating snap fastener element 25, and a support-penetrating post 16 integral with and projecting from the centre of the base in combination with an ornamental member 12 of button-like appearance adapted to bear against the outer surface of said piece of supporting material opposite said base, said ornamental member having a centrally arranged hole 19 with a counterbore 22 extending inwardly a substantial distance from the outer surface thereof to provide an outwardly facing annular shoulder 21; the post 16 extending through said hole and having its end deformed radially outwardly to provide a ring 20 of thermoplastic material bearing against said annular shoulder, said ring being positioned wholly below the top surface of said ornamental member whereby it will be protected from contact with a heated iron which may be pressed against the outer surface of said ornamental member.