baber/WOPTO huggingface dataset:
Patent GB-1284210-A (GB)
Title: Pressure-sensitive recording sheet
Inventor: WHEELER SETH
IPC: B41M5/124
Filed: 1971-04-19
Abstract: 1284210 Pressure sensitive recording sheet LITTON BUSINESS SYSTEMS Inc 19 April 1971 [13 April 1970] 26230/71 Heading B5N [Also in Division D2] A laminated pressure-sensitive recording sheet comprises a transparent plastics layer 3 having an opaque pressure-clarifiable coating 5 laminated to a base sheet 9 by means of an adhesive layer 7. In a modification, Fig. 2 (not shown), a release coat may be provided between the base sheet and adhesive layer. The colour of the adhesive layer is such that it contrasts with that of the opaque layer, so that when pressure is applied to the plastics layer, the opaque layer is made transparent and reveals the coloured adhesive layer. The plastics layer may be polyvinyl chloride, regenerated cellulose, or polyethylene. The opaque coating may be of conventional type. The adhesive may be of the pressure-sensitive, heat-activatable, or waterremoistenable type. The base sheet may be made of paper, plastics, or cloth.
Patent GB-1154593-A (GB)
Title: Vibrationless Percussive Tool.
Inventor: LEAVELL CHARLES
IPC: B25D17/24
Filed: 1966-06-13
Abstract: 1,154,593. Percussive tools. C. LEAVELL. 13 June, 1966, No. 26235/66. Heading B4C. A percussive tool, such as a paving breaker, comprises a hammer piston 13 reciprocably mounted in a cylinder 12 and adapted to strike, via an anvil 15, a tool bit 19, the reaction forces acting on the tool housing 11 being counterbalanced by means of an oscillatory member 20. The cylinder 12 is held in the housing 11 by means of a threaded nut 11a and is shaped so as together with the housing, a chamber 21 for the member 20 is provided. The member 20 is formed with surfaces 20d, 20e confronting respectively surfaces 21a, 21b formed on the housing. In operation, upon pressing a valve 12f, compressed air is fed, via a distributing valve 12<SP>1</SP>, passage 17a, annular space 17b and ports 17c, to act on the underside of the piston 13, thereby moving it upwardly. The air flows through a passage 17 into a chamber 21 so as to act on the surface 20d of the member 20, thereby causing a resultant upward force to act on the surface 21a so as to counterbalance the resultant downward force on the housing as the piston is moving upwardly. When the piston reaches the end of its upward stroke, the valve 12<SP>1</SP> is actuated so as to cause the air to act on the top of the piston and drive it downwardly to strike the anvil 15. In order to counterbalance the upward force on the housing, the air is also fed, via a passage 22 into the chamber 21 and so act on the surface 20e of the member 20, thereby producing a downward force on the housing. The member 20 is maintained in a stable position in the chamber 21 so as not to strike the housing, by means of a piston 23 formed on the member 20 and acted upon continuously by compressed air fed through a passage 30, restriction 29, space 27 and a cylinder 24. When the member 20 falls below a certain level, the top edge of the piston 23 uncovers exhaust ports 25a in the housing and so allows the member to be repositioned by the compressed air in the chamber 21.
Patent GB-682188-A (GB)
Title: Improvements in or relating to means for supporting power driven chain, saws for log slabbing or similar operations
IPC: B27B17/00
Filed: 1949-10-12
Abstract: 682,188. Chain saws. ARMSTRONG, J. W. C., and PALFI, J. Oct. 12, 1950 [Oct. 12, 1949], No. 26258/49. Class 145 (ii). A chain saw comprises guides 2, 3 one on either side of the work 1 to be sawn, upright support structures 8 mounted on trolleys and traversable along the guides, and means for mounting the saw 10 at a predetermined height, this means comprising a rigid tubular suspension member 21 connected to the structures at points towards its ends and adjustable in accordance with the spacing of the guides, and means for suspending the saw from said member. The tubular suspension member 21 is adjusted by rotating it with a bar 23 to wind or unwind the cables 24. It is suspended cantilever-fashion by a frame 18 and the free end is steadied on the other upright 18. The saw motor 27 is suspended by a hanger 26 to prevent sag. Brackets 11, 12 receive the saw which is fed into the work by drum 30 and cables 28. Specification 568,988 is referred to.
Patent GB-259767-A (GB)
Title: Improvements in drawer releasing mechanism for automatic slot machines
IPC: G07F5/02
Filed: 1925-10-21
Abstract: 259,767. Kent, S. G. Oct. 21, 1925. Coin action, with stationary coin forming abutments.-The drawer 7 of a coin-freed machine is locked by a sliding stop 6 having a tooth 5 to engage the teeth 6 of a rack 8 attached to the drawer, A coin, inserted through a shoot 1, runs along a sloping rail 9 carried by the drawer into an horizontal piece 2 carried by the shoot and open at its top and bottom. The coin rests on the rail under a projection 4 on the stop 3 and prevents it from engaging the teeth 6 as the drawer is pulled out. The coin drops as soon as the rail 9 clears it.
Patent GB-1172014-A (GB)
Title: Improvements in or relating to Push-Pull Amplifiers including Transistors
IPC: H03F3/30
Filed: 1967-06-07
Abstract: 1,172,014. Transistor amplifiers. PHILIPS ELECTRONIC & ASSOCIATED INDUSTRIES Ltd. 7 June, 1967 [10 June, 1966; 7 April, 1967], No. 26299/67. Heading H3T. A push-pull amplifier comprises two output transistors T 4 , T 6  connected in series across a supply E, the output being taken from their common point, each output transistor being driven by driver transistors, e.g. T 2 , T 3 , T 5 , the base of one of the output transistors T 4 , being connected to the emitter of a driver transistor, T 3 , and at least one diode, e.g. D 1 , D 2  connected between the collector of transistor T 3  and the common point of transistors T 4 , T 6 . Diodes D 1 , D 2  increase the collector voltage and hence increase the control range of T 3  and may compensate for the temperature-dependent emitter-base threshold of T 6 . Further temperature compensation is provided by D 3 , D 4 , D 5  and resistors R 1  and R 3  having low positive temperature coefficients and integrated with the rest of the circuit.
Patent GB-1174089-A (GB)
Title: Apparatus for Gas Shielded Arc Welding
IPC: B23K9/16
Filed: 1967-06-07
Abstract: 1,174,089. Welding by fusion. MESSER GRIESHEIM G.m.b.H. 7 June, 1967 [10 June, 1966], No. 26306/67. Heading B3R. In gas-shielded arc-welding apparatus torches using wires of different thicknesses and the associated wire-feeding devices are supplied by the same electrical installation. Rootwelding is effected by an air-cooled torch 21 using a thin electrode 19 fed by a device 11  and the weld is completed by a water-cooled torch 22 using a thicker electrode 20 fed by a device 12. Devices 11 and 12 may have a common drive or separate drives. A switch 35 connects either torch to the current source, e.g. a rectifier or converter. A separate voltage and feed rate control is provided for each torch.
Patent GB-1339669-A (GB)
Title: Process using high-silicon as the reductant for the metallothermic production of magnesium
IPC: C22B26/22
Filed: 1971-04-19
Abstract: 1339669 Production of magnesium J M AVERY 19 April 1971 [6 April 1970] 26355/71 Heading C7D Magnesium is produced by the reduction of magnesium oxide in the presence of a slag by a reducing agent comprising 80-99À75 per cent Si, 0-19À75 per cent Al and 0À25-10 per cent Fe may also be present. An inert atmosphere containing H 2 , He and/or Ar may be maintained above the slag. Mg vapour produced condensed in a condensation zone.
Patent GB-649552-A (GB)
Title: Means for actuating a bowden cable
IPC: G05G5/06
Filed: 1948-10-11
Abstract: 649,552. Control levers. DESIGN & DEVELOPMENTS, Ltd., and FROGGATT, R. E. Oct. 11, 1948, No. 26397. [Class 136 (i)] Manually operable means actuating a Bowden cable comprise a hand lever b which has freedom of angular and linear movement at its pivotal connection with a body part a and is securable in a plurality of different positions by engagement of the lever with a stepped slot r in the body part. The parts a, b are formed of folded metal sheets. As shown in Fig. 1, the lever b is pivotally attached to the body part a by a pin e passing through a slot f in the body part. On the pin e is pivoted a member g carryan abutment h for the cable sheath i. A link n is pivoted to the lever b by means of a pin m passing through the stepped slot r in the body part. The link n has a roller o which runs along the folded edge of the body part a. The cable core q is attached to a swivel piece p in the link n. In a modification shown in Fig. 3, the pin e moves in a slot f provided in the lever b. The cable core q is secured by a part t to the body part a and the sheath i is supported by an abutment h slidably supported on the body part by a swivel piece u.
Patent GB-616398-A (GB)
Title: Improvements in and relating to sheet conveying mechanism between cutting and pilingapparatus
IPC: B65H35/04
Filed: 1946-09-03
Abstract: 616,398. Delivery apparatus. VICKERYS, Ltd., and VICKERY, F. W. Sept. 3, 1946, No. 26472. [Class 100(i)] In a machine for cutting and delivering sheets from a web having a high speed conveyer for receiving sheets from a cutter, an intermediate delivery roll, a low speed conveyer and a final delivery roll for delivering the sheets, a driving mechanism which normally drives both delivery rolls 21, 24 and both conveyers 20, 23 at speeds proportional to that of the cutter and the web, is arranged to maintain the intermediate delivery roll 21 running at an appropriate minimum speed when the speed of the cutter mechanism 13, 14, 18 falls below the value proportional to that minimum. As shown, the main drive motor 15 is coupled to a cutter feed roll 13 and a cutter 14 by a drive 16, to the conveyer 20 by drives 30, 33 and a free wheel on the spindle of roll 37, and to the conveyer 23 through a variable gear box 41. Delivery rolls 21, 24 are normally driven by drives 44, 46 from end rolls 37 29 associated with conveyers 20, 23 respectively, but when the speed of the main drive falls below a certain speed, roll 21 and conveyer 20 are driven by an independent motor 48 through freewheel drives 50, 52 and similarly the final roller 24 is driven by a motor 49. Freewheels permit rollers 37, 21 and 24 to travel faster than the main drive mechanism. The gear box 41 is provided with a device to prevent the selection of a gear ratio resulting in the conveyer 23 travelling faster than the web. Sheet bending devices 22 and 25, as described in Specification 17257/06, [Class 100], are associated with the delivery rolls to bend the sheets upwardly. In a modification the intermediate roll 21 may be omitted, the roll 37 serving the purpose of the delivery roll. Specifications 12143/11 and 29895/12, [both in Class 100(i)], relating to the adjustment of the height of the pile 26 are referred to.
Patent GB-744025-A (GB)
Title: Improvements in proof printing machines
Inventor: KALDSCHMID GEORG
IPC: B41F5/20
Filed: 1953-09-28
Abstract: 744,025. Proof-printing machines. VEE DRUCKMASCHINENWERK VICTORIA VVB. POLYGRAPH. Sept. 28, 1953, No 26609/53. Class 100 (2). In a rotary proof-printing press the framework is provided with runway tracks 21 at the top, a well 22, and a lifting and lowering mechanism, whereby a plate cylinder 5 can be rolled along the track and lowered into the well into printing position, or readily removed from the press. The lifting &c. means can be hydraulically or pneumatically operated. As shown, a motor 15 can either drive a pump supplying liquid to a pair of hydraulic rams 23 adapted to lift a plate cylinder, or can drive through gearing 17 an impression cylinder 2 and inking-apparatus 6. The inking-apparatus can be tripped by a lever 7, an ink duct 8 is tiltable by a lever 9, and a clutch in the drive to the inking-apparatus can be operated from either side of the press by a handle 10 or lever 11. Folding tables 12, 13 serving to receive tools &c. are mounted adjacent the plate and impression cylinders, respectively. A sheet laying-on table 14 provided with gauges &c. is hinged for parallel swinging motion above the cylinder 2. The cylinder 2 is geared to the cylinder 5, is driven through a clutch operated by a lever 18 or foot-pedal 19 on opposite sides of the press, and can be tripped relatively to the cylinder 5 by a lever 20. The grippers of the cylinder 2 are controlled by a handle 43. Each ram 23 is situated below the end of the cylinder 5 and has a piston 24 provided with a plate 25 adapted to engage a lateral shaft extension 30 of the cylinder whereby, when the bearings have been removed, the cylinder is lifted vertically to the top of the press, whereupon it can be rolled along the tracks 21. When the cylinder is fully raised, the motor 15 is automatically stopped, and lock-pins 26 (not shown) engage in holes in the pistons 24. The plate cylinder 5 has grooves in the shaft extensions 30 which are engaged by the tracks 21, and the bearings for the extensions 30 are withdrawable axially by screw means as described in Specification 743,377. A trolley, also substantially as described in that Specification, and comprising a lower part and an upper part movable along rails on the lower part, is used to carry plate cylinders to and from the press.
Patent GB-492927-A (GB)
Title: Systems controlled by means of devices sensitive to the direction of propagation of radio electro-magnetic waves
IPC: G05D1/02
Filed: 1937-10-01
Abstract: 492,927. Automatic control systems. STANDARD TELEPHONES & CABLES, Ltd. Oct. 1, 1937, No. 26622. Convention date, Nov. 4, 1936. [Class 38 (iv)] Steering.-Direction control means for a vehicle comprise direction control gear and a device such as a radio-compass or cathode-ray tube which is sensitive to the direction of propagation of radio-electromagnetic waves and means embodied in the device whereby a change in the direction of the vehicle causes an unbalance in two electrical elements which is utilized to operate the direction control gear. Fig. 1 shows a radio-compass 1 carrying conefrustum or other mirrors 5, 6 whereby light from a lamp 7, preferably with a rectilinear filament, may be selectively directed upon photo -electric cells 9, 10 connected in opposition in the circuit of a polarized relay 11. The relay selectively closes circuits controlling an electrical, mechanical or pneumatic unit acting either on a directional gyroscope or the controls of the vehicle such as an aeroplane. The sensitivity of the control may be varied by adjustment of lenses 8. In a modification, the mirrors are replaced by a shutter obscuring selectively openings leading to two closed chambers containing photo-electric cells. The relative sizes of the openings may be adjusted to determine the equilibrium position of the polarized relay. Where the direction indicator is a cathode-ray tube, two photo-electric cells are fixed in positions so as to be oppositely affected by rotation of the luminous indicator line, figure 8 or cardioid. In a further modification, Fig. 10, an indicator needle carries a condenser plate 50 normally lying symmetrically in relation to two condenser plates 51, 52 connected respectively in circuit with transformers 55, 56. A high-frequency oscillator 54 is included in both circuits and the rectified outputs of the transformers are balanced in a differential relay 57. The condenser elements may be replaced by inductance coils. In a further modification employing such coils 60, 65, 66, Fig. 12, a low-frequency oscillator 64 is used. One coil of a marginal relay 71 is fed with current of a fixed phase from this oscillator and a second coil is in series with the coils 65, 66, the relative inductance of which is varied by the movement of the coil 60. An armature acted upon by the changes in tractive effort due to changes in phase of the two excitations actuates contacts controlling the direction gear of the vehicle.
Patent GB-1059286-A (GB)
Title: A method and apparatus for granulating pieces of thermoplastic synthetic resin film
IPC: B29C48/395
Filed: 1964-06-26
Abstract: 1,059,286. Mixing machines. ULTREX-CHEMIE G.m.b.H. June 26, 1964 [June 29, 1963], No. 26631/64. No. 26631/64. Heading B1C. [Also in Division B5]. In the continuous granulation of pieces of thermoplastic film the granulator comprises two cooperating friction discs rotated relative to each other to generate sufficient heat that the film pieces melt together to form granules. As described the process is carried out in apparatus (Fig. 1, not shown) comprising a first cutting mill (1) to which scrap film pieces are fed, a friction disc mill (2), a second cutting mill (3) and a storage bin (30) with the necessary ancillary appartus including interconnecting pipes, blowers, air separators and hoppers. The feed to the disc mill 2 from the hopper (12) includes a conveyor screw (91) (Fig. 8, not shown) driven by a motor controlled by a bridge circuit to which a heat sensitive element is connected. The mill 2 comprises interengaging crown toothed discs 53, 54 (not shown) one of which is stationary and the others, of which is provided with curved draw - in members (see Figs. 3-7, not shown). The space between the discs is adjustable. The outer part of the first disc has non- radial slots. In a modification the interengaging discs have concentric circles of teeth across their entire faces. A colouring ingredient may be fed to the friction disc mill.
Patent GB-742964-A (GB)
Title: Improvements in or relating to oscillating systems
Inventor: NEBHUTH KARL-HEINZ
IPC: B65G27/32
Filed: 1953-09-28
Abstract: 742,964. Vibratory mechanism. SCHENCK MASCHINFABRIK DARMSTADT GES., C. Sept. 28, 1953. No. 26632/53. Class 80(4) A conveyer trough 8 supported on springs 9 is coupled by a rubber block 7 to the casing of a motor 5 driving an unbalanced weight, so that the trough and motor casing form a two-mass oscillating system, and in order that changes in the loading of the trough, which affect the natural frequency of the system, do not appreciably alter the amplitude of vibration, the system is operated below the resonance frequency by a motor whose adjusted power output changes little in the range of speeds used. The motor 5 may be a series-wound electric motor, an asynchronous motor with a slipring resistance or a high internal resistance, or an internal combustion engine. In Fig. 2 the motor output power Nm and the system input power Ns are plotted against motor speed n, the three curve Ns representing three different loading conditions. The working points are determined by the intersections of the curve Nm with the curves Ns. Since with the type of motor specified the curve Nm is substantially flat, the variation in power input under the three conditions is very small and consequently the amplitude of vibration-which has an approximately parabolic relation with the power input (Fig. 1, not shown)-remains substantially constant under the three conditions. The required amplitude is set by adjustment of the power output of the motor.
Patent GB-518984-A (GB)
Title: Improvements in and relating to valve gear for steam engines
IPC: F01L1/44
Filed: 1938-09-12
Abstract: 518,984. Engine valve gear. SOC. D'EXPLOITATION DES PROCEDES DABEG. Sept. 12, 1938, No. 26633. Convention date, Sept. 10, 1937. [Class 122 (ii)] In a rotary cam valve gear the levers 10, 11 are pivoted in a carrier 14 slidable axially in the casing relatively to the carrier 3 to vary valve lift, and the levers actuate the valve tappets through pivoted members 22, 23. The valves may be held open by hand operated levers 22a, 23a. The carrier is adjustable by rack 15 and pinion 16. A pump 33 supplies lubricant through a duct in the cam shaft. More than one carrier may be provided and they may be operated independently or together with the same or different lengths of travel. The relative axial position of two carriers may be adjustable. Specification 327,002, [CLass 122 (ii)], is referred to.
Patent GB-365036-A (GB)
Title: Improvements in or relating to machine guns
IPC: F41A9/79
Filed: 1930-09-06
Abstract: 365,036. Machine guns. VICKERSARMSTRONGS, Ltd., LARSSON, C. A., and MILLS, R. C., Vickers House, Broadway, Westminster. Sept. 6, 1930, No. 26692. [Class 92 (ii).] The cartridge feed-box A of a gun of the Maxim type is provided with a spring catch B<2> to engage in turn the rims of the cartridges C in the belt and prevent their rearward movement when the gun is at elevation. During extraction of a cartridge from the belt, the catch is moved aside by the cartridge rim.
Patent GB-1300739-A (GB)
Title: Improvements in and relating to offset duplicators
IPC: B41L39/02
Filed: 1969-12-02
Abstract: 1300739 Card reader RICOH KK 2 Dec 1969 [30 Dec 1968] 26713/72 Divided out of 1300738 Heading G4M [Also in Division B6] An offset lithographic printing machine incorporates a reading device, which reads three sets of marks, S, D1-4 and T1-4 on a printing plate presented to the machine, and means by which the number of copies to be printed from the particular plate can be derived from the marks. A counter records the number of copies produced from the plate, and when the number derived from the marks is reached, the printing machine is stopped, and a further printing plate presented by a feed mechanism. The marks may be read by photo-electric transducers, e.g. cadmium sulphide light-sensitive elements. A start mark S is read by a first transducer, which initiates operation of control circuitry and then reads variably positioned data markings D1-4. Four sets of fixed markings T1-4 are read by a second transducer, and provide a reference against which the data markings are compared to yield thousands, hundreds, tens and units. (In the Figure the number shown is 1520.) Reference has been directed by the Comptroller to Specification 1,244,854.
Patent GB-1264713-A (GB)
IPC: C08K5/13
Filed: 1969-05-27
Abstract: 1,264,713. Heat-stable, antistatic polyamide. MONSANTO CO. 27 May, 1969 [29 May, 1968; 11 Sept., 1968], No. 26769/69. Heading C3R. A linear fibre-forming polycarbonamide in which the amide groups are separated by at least 2 carbon atoms are rendered heat-stable and antistatic by addition of (a) 0À1 to 20 weight per cent of a polyoxyalkylenated triglyceride of a C 10-30  saturated fatty acid in which the oxyalkylene portion has a molecular weight of 2000 to 22,000 and (b) 0À01 to 2 weight per cent of a sterically hindered phenol of formula in which R 1-5  are atoms or groups which are chemically inert under spinning conditions and in air at 200 C. for at least 2 minutes, at least one of R 1  and R 2  being a branched C 3-8  alkyl radical, an aralkyl radical or a hydroxyaralkyl radical substituted ortho to the hydroxyl group by a branched C 3-8  alkyl radical. The polycarbonamide may be nylon 6 or nylon 66. The glyceride may be hydrogenated castor oil oxyethylenated with ethylene oxide. The phenol may be 1,3,5-trimethyl-2,4,6-tris-(3,5-di-tertbutyl - 4 - hydroxybenzyl)benzene, 1,1 - bis- (2 - methyl - 4 - hydroxy - 5 - tert. - butylphenyl) - n - butane, bis - (2 - tert. - butyl - 3- methyl - 6 - hydroxyphenyl)methane, or 2,4,6- tris - (2 - hydroxy - 3 - tert. - butyl - 5 - methylbenzyl)phenol. In examples, the glyceride and phenol are added to the polymer starting materials before polymerization together with manganous hypophosphite monohydrate. The mixture is then heated and TiO 2  added at an intermediate stage of polymerization.