baber/WOPTO huggingface dataset:
Patent GB-1434797-A (GB)
Title: Apparatus and method for the production of cast concrete emmbers
IPC: B28B23/06
Filed: 1973-05-01
Abstract: 1434797 Track propulsion systems SPANDECK Inc 1 May 1973 [8 May 1972] 20591/73 Heading B7L [Also in Division B5] A carriage 117 is driven along rails 22 by friction rollers 120 engaging I-section beams 76 mounted on the carriage. The rollers are supported on arms 126 pivoted to the bed 142 and normally resting against supports 163. Operation of a cylinder 146 pivoted to the upper end of one arm 126, and connected to the other arm through a rod 148, pivots the arms to place the rollers 120 against the I-beams 76 with a thrust determined by nuts 158, 160 mounted on the rod 148. Variable speed reversible motors 121 drive the rollers 120. The carriage is described as supporting a concrete mould 127 (see Divisions B4-B5).
Patent GB-653581-A (GB)
Title: Improvements in or relating to record punching machines
Filed: 1948-08-05
Abstract: 653,581. Statistical apparatus. BRITISH TABULATING MACHINE CO., Ltd. Aug. 5, 1948, No. 20698. Convention date, Aug. 13, 1947. [Class 106 (i)] [Also in Groups VIII and XXIV] A record - punching machine provided with a punch element mounted for reciprocation, a rotary actuating cam and an interposer positionable between the punch element and the actuating cam whereby the punch element will be operated during rotation of the cam, is characterized by the provision'of a rotary restoring cam engageable directly with the punch element to restore it and gear connections between said cams to drive them in unison. As shown in Fig. 7, operation of an appropriate magnet (not shown), connected to rod 52 withdraws a latch 49 so that upon rotation of triangular cam 56 a lever 38 pivoted at 39 is moved under pressure of spring 47 to position interposer 36 between a rotating cam 33 and the head of a punch 29. After operation the punch is restored by cams 42 geared to cam 33. The machine punches a blank tape in conformity with perforations in a tape 10, Fig. 4, sensing and punching for successive columns taking place simultaneously for three groups or decks of perforations, the sensing of one set of columns in the master tape being effected whilst the preceding set is being punched in the duplicate tape. Sensing of the master tape (not shown) is by means of three contact rollers, one for each deck, and three co-acting sets of brushes, electrically connected to the punch-controlling magnets. The tapes are fed through the machine by means of pin wheels engaging the feed holes 13 of the tapes.
Patent GB-404942-A (GB)
Title: Improvements relating to vehicle bodies
IPC: B60J7/22
Filed: 1932-07-23
Abstract: 404,942. Ventilating vehicles. BISHOP, W. H., 48, Moor Street, Birmingham. July 23, 1932, No. 20763. [Class 137.] A vehicle body of the saloon type with a sliding roof panel is ventilated by the provision at the front of the roof, or at the upper portion of the back or at both places of a transverse hood a or c each gradually increasing in its spacing from the normal roof line to leave a rearwardly facing opening in communication by an opening b or e with the interior of the saloon. Motion of the vehicle, by an ejector action, withdraws air from within the saloon. The sliding roof panel f is arranged to be drawn back as shown at g, Fig. 2, to provide an opening greater than is usually possible with an ordinary roof. The opening b may be provided with a slotted cover plate h, and slotted shutter j movable by a handle k, and a sheet metal cover l with cowled openings m prevents water from entering the opening b.
Patent GB-644489-A (GB)
Title: Improvements in or relating to air-blast electric circuit breakers
IPC: H01H33/16
Filed: 1948-08-06
Abstract: 644,489. Air-blast circuit-breakers. MASCHINENFABRIK OERLIKON. Aug. 6, 1948 No. 20854. Convention date, Sept. 24, 1947. [Class 38(v)] In an air-blast circuitbreaker, a low resistance 5, adapted to limit the rate of rise of restriking volts, is connected between an annular fixed contact 2 engageable by the moveable contact 3, and an auxiliary electrode 4, and a high resistance 6, adapted to prevent over - voltages when transformer magnetizing currents are interrupted, is connected between contact 2 and the main fixed contact 1. When contacts 1, 3, separate, the arc formed is blown so that it bridges contact 1 and electrode 4 so that the resistance 5 is connected in series therewith, and the resistance 6 is inserted in parallel with the arc and resistance 5. The Specification states that magnetizing currents are ruptured at contacts 1, 3 and over-voltages prevented by resistance 6, the resistance 5 not being connected at all. In a modification, Fig. 2 (not shown), the resistance 6 is connected between the contact 1 and electrode 4, so that when the arc is extinguished, the two resistances are in series.
Patent GB-941454-A (GB)
Title: Casing structure for hair clipper
IPC: B26B19/06
Filed: 1961-06-12
Abstract: 941,454. Hair clippers. WAHL CLIPPER CORPORATION. June 12, 1961 [June 24. 1960], No. 21097/61. Heading B4B. An electrically operated hair clipper, in which the stationary blade 22 is movable longitudinally to vary the length of hair left uncut, has parallel guide surfaces 24, 26 on the end 18 of the casing section 16, and parallel guide surfaces 34, 36 on a support plate 32 mounted on the casing by screws 37, the opposed pairs of guide surfaces forming guide grooves 42, 44 in which slide the inturned ends 50, 52 of a channel-section bracket 48 to which the stationary blade 22 is secured by screws 54. As shown in Fig. 6, the guide grooves are offset. The bracket is moved relatively to the casing by movement of a hand lever 64 integral with a hub 62 which has a pin 66 engaging a recess 68 in the bracket and which is rotatably mounted on a pivot screw 56, extending through an opening 58 in the bracket 48 and engaging a threaded opening 60 in the support plate 32. The support plate is of low friction, resilient material such as moulded nylon permitting increase in design tolerances, a thin resilient front wall 35 with maximum exposure of the reciprocated blade and engagement by the drive finger 28 close to the teeth of the movable blade 20 to avoid twisting, and resilience in the sealing fin 70.
Patent GB-706975-A (GB)
Title: Improvements in and relating to tubular steam generators
IPC: F22B21/34
Filed: 1950-08-28
Abstract: 706,975. Steam-generator furnaces. VORKAUF, H. Aug. 13, 1951 [Aug. 28, 1950], No. 21206/50. Class 51 (1) In order to improve the combustion in combustion chambers of comparatively small height the combustion products are first led upwards and subsequently downwards by the provision of a tube wall formed by closely spaced tubes through which boiler water is passed by forced circulation, the arrangement being such that the velocity of the combustion products is continuously increased on both the upward and downward paths. As shown in Fig. 1 a watertube wall 2 is so disposed that combustion products flowing from the grate 3 follow a path of decreasing cross-section before flowing over convection heater surfaces 4.
Patent GB-1154161-A (GB)
Title: Polyether Polyols
Inventor: AITKEN ROXBURGH RICHMOND
IPC: C08G18/50
Filed: 1965-05-19
Abstract: 1,154,161. Polyether polyols containing nitrogen. IMPERIAL CHEMICAL INDUSTRIES Ltd. 27 April, 1966 [19 May, 1965], No. 21222/65. Heading C2C. [Also in Division C3] Polyether polyols are obtained by reacting an alkylene oxide with (a) a hydroxy-alkylamine that is liquid at 100‹ C. and contains at least two active hydrogen atoms in the molecule and (b) a polyhydric alcohol having a melting point in excess of 100‹ C., or an amine having at least three active hydrogen atoms and no hydroxyl groups in the molecule or a mixture of said amine and alcohol. The examples describe products derived from the interaction of (a) triethanolamine, sucrose and propylene oxide; (b) triethanolamine, toluene diamine (a mixture of 2,4- and 2,6-isomers) and propylene oxide; and (c) triethanolamine, p,p<SP>1</SP>- diaminodiphenylmethane and propylene oxide.
Patent GB-143588-A (GB)
Title: Improvements in or relating to systems for driving hoists, rolling mills and electric locomotives
IPC: F16H61/42
Filed: 1918-12-19
Abstract: 143,588. Vickers, Ltd., Mackness, C. F., and Broughton, H. H. Dec. 19, 1918. Fluid-transmission apparatus.-Hoists or winders are driven by alternating-current asynchronous electric motors through hydraulic variablespeed gears, preferably of the Williams-Janney type. The position of the tilting-box or swash-plate A' of the pump end of the gear may be varied by hand, but preferably by power-operated mechanism so constructed that the ratio of transmission cannot be changed too suddenly. In the arrangement shown, the tilting-box is positioned by a double ram D working in cylinders D<1>, D<2> connected to an oil-filled hydraulic accumulator K through a slide valve G, operated by a bell-crank lever J connected by a link F<2> with a floating lever F<1>, the end F<1> of the lever being connected to hand mechanism and the other end to the arm D. A valve K<3> controls the rate of movement of the ram.
Patent GB-736512-A (GB)
Title: Improvements in or relating to cathode sputtering apparatus
Inventor: HOLLAND LESLIE ARTHUR
IPC: H01J37/34
Filed: 1952-08-25
Abstract: 736,512. Coating by sputtering. EDWARDS & CO. (LONDON), Ltd., W. Jan. 15, 1954 [Aug. 25, 1952], No. 21340/52. Class 82 (2). A cathode sputtering apparatus comprises a vacuum chamber, which may be cylindrical, a support for the work, an anode, which may be the housing, a first cathode comprising the material to be applied as a coating, a second cathode in the same general plane as the work support and shaped to surround, partially or wholly, the periphery thereof, and means providing a magnetic field the lines of force of which extend between the cathodes. As shown, a hollow cylinder 1 of copper has its lower end resting on a vacuum seal ring gasket 2 in a mild steel base-plate 4, said base-plate forming one polepiece of an electromagnet 5, the opposite polepiece comprising a mild steel annulus 6 placed on the upper end of said cylinder 1 with similar vacuum sealing. A mild steel plate 8 spans the annulus 6 and rests upon a further vacuum seal ring 9 in the upper face of the annulus, the plate 8 thus completing the second polepiece and forming a door providing access to the chamber formed by the cylinder 1, the base 4 and the annulus 6. A disc cathode 11, composed of the material to be sputtered, is secured to the door 8 by means of insulators 1 and engages, by means of a spring-metal strip 12, the upper end of a terminal rod 13, which is shielded for the greater part of its length, by a tube 15, from the anode formed by the cylinder 1. An annular cathode 16, which may be made from the same material as the disc cathode if uniformity of the deposit is not important, or from a metal which has a low intrinsic sputtering rate, e.g. aluminium, if uniformity is desired, is supported upon insulators 17 and a circular glass plate 18, forming a work-table, is supported within the annular cathode on insulators 19 carried by a stand 20 which rests on the baseplate 4. A terminal post 21 connected to the cathode 16 is supported by an insulating bushing 22 in the base-plate 4, the latter being apertured to receive an exhaust pipe 24 for connection to a vacuum pump. In operation of the apparatus, a field of 200 gauss is supplied by the magnet, the cylinder 1 is connected to the positive terminal of a D.C. source providing 1500 volts and the cathodes 11 and 16 are connected to the negative terminal, the total current being about 150 mA. and the current density 0.25 mA. per square cm. The pressure within the chamber is reduced to 0.08 mm. Hg by pumping, it being further reduced to 3.5 X 10<SP>-3</SP> mm. Hg. when the magnetic field is applied.
Patent GB-1345633-A (GB)
Title: Mower apparatus
IPC: A01D67/00
Filed: 1971-04-19
Abstract: 1345633 Rotary mower GENERAL ELECTRIC CO 19 April 1971 [12 Feb 1970] 21524/ 71 Heading A1F A mower for use with an electric tractor, consists of a planar housing member 30 for supporting rotor blade elements. Springed rod members 15 and 16 are joined to the tractor chassis 10 at 14 and to the cutter housing by universal joint 53. The spring members 60 are intended to provide resilience in the transverse direction and the universal joint 53 some movement about the transverse 31 and longitudinal 32 directions. The housing is supported from the ground by four wheels, two of which are rotatable on castors for change of direction of movement. Further to this the housing is adjustably supported to the body of the tractor by a U-shaped cross section boom member 13 which is connected to the housing by means of a tape member 23 extending over a roller member 22 and has at one end a fastening element 24. The wheels 44 may be adjusted to alter the position of the housing. The cutter blades are driven by electric motors 81-83, the eletcric power being supplied from the tractor by means of an electric lead 86. The springs 73 and 74 are used to reduce the load on the front castor wheels.
Patent GB-869374-A (GB)
Title: Improvements in or relating to automatic weft bobbin changing apparatus for use in looms
IPC: D03D45/50
Filed: 1958-07-04
Abstract: 869,374. Automatic bobbin changing in looms. RUTI MACHINERY WORKS Ltd. July 4, 1958 [July 5, 1957], No. 21559/58. Class 142(2) In an automatic bobbin changing apparatus for looms of the type in which the fresh bobbins 12 are carried in a revolving magazine 11, a suction nozzle 18 and a revolving baffle 23 are provided on the axis of the magazine. The weft ends pass from the bobbins over the edge of a disc 17 to the nozzle 18. After severing of the wefts, the ends are sucked away down a pipe 21. Alternatively, the nozzle may be on the shaft 10, which is then hollow to serve as a suction pipe, the baffle then being mounted on an adjacent part of the loom.
Patent GB-953498-A (GB)
Title: Improvements relating to change-speed gears
IPC: F16H61/32
Filed: 1962-06-04
Abstract: 953,498. Change-speed and clutch control; intermittent toothed gearing; slip couplings. DAIMLER-BENZ A.G. June 4, 1962 [June 20, 1961], No. 21561/62. Headings F2D, F2L, F2Q and F2U. In a change-speed and clutch control for a motor vehicle of the kind wherein ratio shift is effected by rotation of a cam selector 31, the latter is driven from a reversible electric motor through a Geneva mechanism 23, 33. The cam selector groove 31 is formed on one side of the star wheel 30 of the Geneva mechanism and acts through pins 38, levers 39 and springs (Fig. 6, not shown), on the shift forks. The star wheel 30 is rotated through an angle corresponding to a ratio shift for each complete revolution of an intermediate wheel 22 by a pin 23 thereon engaging radial slots 33 in the star wheel which, when stationary, is locked in the selected ratio position by a surface 24 on the wheel 22 engaging arcuate recesses 32 in the star wheel. A cam 56 on the wheel 22 acts through cam follower 46 and levers 47 to disengage a clutch in series with the changespeed gear and a centrifugal clutch or fluid coupling prior to ratio shift. On completion of ratio shift the clutch is re-engaged slowly by means not described. Ratio shift is initiated by manual or automatic means which energizes a solenoid (Fig. 1, not shown), that lifts a detent pawl from a recess in a disc 26 fast with the wheel 22 and starts the electric motor. The electric motor drives through a slip coupling 18 the wheel 22 which disengages the clutch and then steps the star wheel 30 through one ratio position. On reaching a new ratio position the star wheel 30 actuates a switch 37 to de-energize the solenoid whereupon the detent pawl abuts the surface of the disc 26. The motor continues to drive the wheel 22 until it reaches its initial position, whereupon the pawl drops into the recess in the disc 26 and stops the motor. The slip coupling 18 comprises a gear-wheel 15 which is frictionally clamped between plates 19 by a spring 20.
Patent GB-588150-A (GB)
Title: Improvements in or relating to furniture for the reception of newspapers, letters and the like
IPC: A47B49/00
Filed: 1944-11-03
Abstract: 588,150. Cabinets. SOHNE, H. Nov. 3, 1944, No. 21614. Convention date, Sept. 1, 1943. [Class 52 (i)] A cabinet 3, rotatable on a movable frame 2, comprises a set of drawers 4 arranged at each end thereof such that when closed, the drawers are downwardly inclined and when fully drawn out of guide slots 5b they assume a horizontal position, being maintained thereat by means of locking pins 5, fixed to the inner walls of the cabinet, which engage with recesses 5a cut in the rear ends of the side walls of the drawers 4.
Patent GB-773352-A (GB)
Title: Improvements in the preparation of cyclised rubber
IPC: C08C19/10
Filed: 1955-07-27
Abstract: Isomerized rubber is prepared by reacting solid natural rubber with an organic sulphonic acid and a surface-active silica or silicate. The reaction may be effected in 10 to 30 minutes in a mixing apparatus heated to 140 DEG  to 150 DEG C.  The mix preferably comprises 6 1/2 to 10 parts by weight of organic sulphonic acid, 5 parts silica or silicate and 100 parts natural rubber.  In one example the mix comprises (1) 100 parts smoked sheets, 8 parts p-toluene sulphonic acid, and 7 parts finely divided calcined silica, 1 1/2 parts magnesium oxide being added after the reaction has proceeded for 10 minutes.  In a further example 100 parts of smoked sheets are mixed in a mill at a roll temperature of approximately 60 DEG  to 80 DEG C. with 10 parts China Clay and 10 parts p-toluene sulphonic acid, and thereupon heated in an oven at 175 DEG C.  In other examples mixes comprising various proportions of rubber, p-toluene sulphonic acid and silica are described. Specification 382,755 is referred to.
Patent GB-1038052-A (GB)
Title: A temperature-compensated oscillator
IPC: H02M7/53862
Filed: 1963-05-30
Abstract: 1,038,052. Saturable-core oscillator circuits. GENERAL TIME CORPORATION. May 30, 1963 [July 17, 1962], No. 21766/63. Heading H3T. A temperature-compensated oscillator comprises a saturable-core transformer with two electronic switches having input and output circuits cross-coupled to two windings of the transformer to drive the core to saturation alternately in the two directions, and either (a) a further winding connected to a temperaturesensitive device which loads the transformer more as the temperature rises, or (b) temperature-responsive diodes which reduce the supply voltage as the temperature rises. In Fig. 1 the transformer 10 is energized by a transistor multivibrator 21, 22, and the frequencystabilizing means comprises two oppositelypoled diodes 41, 42 which produce a negligible loading below ambient temperature but conduct more and more as the temperature rises. Additional compensation is provided by a temperature-sensitive common-emitter resistor 45 and a bridge 50 containing a Zener diode. The bridge may be replaced by a simple Zener diode shunt (Fig. 3, not shown), two Zener diodes in series (Fig. 4, not shown) or Zener and temperature-sensitive diodes in series (Fig. 5, not shown). The variable transformer loading may be a thermistor shunted by an ordinary resistor (Fig. 1d, not shown). The crosscoupling of the multivibrator may be via additional windings on the transformer (Fig. 3, not shown).
Patent GB-1210477-A (GB)
Title: Polyester coating compositions
IPC: C08L63/00
Filed: 1969-04-29
Abstract: 1,210,477. Polyester coating compositions. E.I. DU FONT DE NEMOURS & CO. 29 April, 1969 [13 May, 19681, No. 21801/69. Heading C3R. A polyester is prepared by the esterification reaction of (a) a mixture of maleic anhydride and at least one of fumaric acid, itaconic acid, orthophthalic acid, orthophthalic anhydride and isophthalic acid, (b) a glycidyl ester of formula where R 1  is an alkyl radical having 5 to 17 carbon atoms or an ethylenically unsaturated aliphatic hydrocarbon radical having 12 to 18 carbon atoms, (c) ethylene glycol, propyleneglycol, 1,3-butanediol, 1,4-butanediol or neopentylglycol, and (d) trimethylol ethane, trimethylol propane, glycerine or a pentaerythritol/glycol mixture. Preferably the reaction mixture comprises 4 to 15% (by equivalents) of maleic anhydride, 30 to 41% of the other acid component, 9 to 25% of (b), 5 to 27% of (c) and 23 to 28% of (d). The ratio of equivalent weights of (b) to (c) is preferably from 0À25 : 1À00 to 2À25 :1À00. A coating composition comprises a solution of: (i) 20 to 87 parts by wt. of the polyester, (ii) 3 to 30 parts of a water-insoluble epoxy-hydroxy polyether condensate having a plurality of vie-epoxy groups per molecule and at least one hydroxyl group per molecule joined to an aliphatic carbon atom, and (iii) 10 to 50 parts of at least one heatcurable aminoplast coating resin, the amounts of (i), (ii) and (iii) totalling 100 parts. Preferably component (ii) is obtained by condensing epichlorohydrin with a polyhydroxy compound. The aminoplast is preferably a condensate of formaldehyde with one or more of melamine, benzoguanamine, melamine combined with toluenesulphonamide, and urea, or hexamethoxy methylol melamine. The composition may also comprise a pigment, eg. titanium dioxide, in a proportion of up to 150 parts per 100 parts of the organic film-forming material.
Patent GB-1502451-A (GB)
Title: Gas dynamic pressure exchanger
IPC: F04F13/00
Filed: 1975-05-21
Abstract: 1502451 Pressure exchangers BBC BROWN BOVERI & CO Ltd 21 May 1975 [11 July 1974] 21849/75 Heading F1N In a pressure exchanger having a rotor comprised of curved cell walls 1 each extending between a shroud at a location 3 and a hub at a location 4, the angle α between the locations 3 and 4 is less than 4 degrees and the angle # subtended at the centre of the rotor by the most angularly separated points on the median line 2 through the cell wall is less than 7 degrees. Each cell may be of sheet metal of uniform thickness or of cast metal having a thickness which decreases from one location, reaches a minimum, and then increases to the other location. The thickness of the cell wall at the shroud and hub locations 4, 3 are preferably twice and three times the minimum thickness, respectively. The preferred proportions of the radii R 1 -R 5  and r 1 -r 3  based on Ro = 100% are specified. The effects of differential thermal expansion and centrifugal forces is said to produce only slight stresses in the rotor.
Patent GB-388668-A (GB)
Title: An improved preparation for non-skid rubber roads
IPC: E04F15/12
Filed: 1932-10-18
Abstract: A road-making material contains 50 per cent of rubber together with a particular grade of Leighton Buzzard sand, and bitumens which are mixed with flux oil.  Preferred proportions are rubber 50, sand 35, bitumens 15.
Patent GB-479134-A (GB)
Title: Improvements relating to the manufacture or treating of valves for internal combustion engines
IPC: B23K9/04
Filed: 1936-08-08
Abstract: 479,134. Making valves. BULLOCK, F. E. Aug. 8, 1936, No. 21873. [Classes 83 (ii) and 83 (iv)] Uniting by fusion.-In a method of applying a layer of the heat resisting alloy sold under the Registered Trade Mark " Stellite " to the valves or valve inserts of internalcombustion engines, an electric arc is formed between a stick of " Stellite " and the valve or insert, the work being rotated during the operation. The valve 5 is secured by a collet 6 in a sleeve 9 rotated by an electric notor 13 through change-speed gear 15, 16 and bevel gear 11, 10. The axis is inclined so that the seat 5a is horizontal. A " Stellite " electrode 17 is mounted in a holder 18 secured to a slide 19 which is traversed vertically so as to maintain the arc by a screw 21 rotated by a ratchet mechanism 22, 24, connecting rod 25 and adjustable pin 26 from bevel gear 28. The gear 28 is driven by gearing 29 from a separate motor or from the motor 13. The feed of the electrode may alternatively be effected by a cam.