baber/WOPTO huggingface dataset:
Patent GB-239775-A (GB)
Title: An improved method of making the opening for the evacuation cap in double-walled glass dewar vessels
IPC: C03B9/06
Filed: 1925-02-09
Abstract: 239,775. Stephens, A. J., (Siegheim, F.). Feb. 9, 1925. Forming vacuum flasks; perforating and indenting. - A method of making the opening for the evacuation tube of a vacuum flask consists in perforating, or forming a protuberance on, the outer vessel at the time it is blown while the glass is still at the working temperature. When the vessel is withdrawn from the finishing- mould, it is placed on a rest 4 and is perforated by the flame from a burner 3. The distance between the burner and the rest is so arranged that the nipple left on the finished flask cannot be damaged by the cover. The perforation may be formed by directing the flame of the burner through a small aperture formed in the finishing-mould in which the vessel is blown. In another modification, the finishing mould is formed with a recess on its inner surface, so that a proturberance is formed on the vessel which is afterwards broken off for the attachment of the evacuation tube.
Patent GB-482164-A (GB)
Title: Improvements relating to shafts for tennis, squash, badminton and other like racquets
IPC: A63B49/12
Filed: 1937-02-08
Abstract: 482,164. Racquet shaft. ACCLES & POLLOCK, Ltd., and WHITE, F. C. Feb. 8, 1937, No. 3668. [Class 132 (ii)' A racquet shaft comprises a metal tube of appropriate length, the central portion c of which is of circular or elliptical cross-section and is made to a form which gradually increases in diameter from an intermediate part towards its ends in either a curved form as shown in the Figure, or in a straight or a stepped form. One end a is attached to the racquet frame, the other end b to the handle, the ends being made parallel or tapered and of circular, elliptical or polygonal cross-section. The thickness of the tube may be uniform or it may vary. Specifications 371,665, 447,270, and 447,320 are referred to.
Patent GB-878382-A (GB)
Title: Fuel vaporizer-carburetor
IPC: F02M17/28
Filed: 1958-02-04
Abstract: 878,382. Charge forming devices. MINOZA, C. Feb. 4, 1958, No. 3699/58. Class 7(3). A charge forming device comprises an evaporator tube assembly 10 heated by the engine's exhaust gases and adapted to continuously feed and vaporize fuel, supplied by a siphon 2 from an auxiliary fuel tank 1, into a mixer tube assembly 14 at the lower end of the evaporator tube assembly, the mixer tube assembly being connected to an inlet manifold of the engine and adapted to admit air and mix it in correct proportions with the vaporized fuel issuing from the evaporator tube assembly and allow a metered amount of the resulting vaporized fuel and air mixture into the engine through the inlet manifold. As shown, the auxiliary fuel tank 1 is connected to the fuel pump (not shown) and the level of liquid fuel therein is maintained constantly above the upper bend of the siphon tube 2 by means of a float valve (not shown). The needle valve 3 could be controlled mechanically or electrically. It can be controlled mechanically by the operator. It is stated that the needle could be controlled mechanically by the rotary motion of the shaft or flywheel of the engine through gears or cams or by the suction of the engine as in the operation of a pneumatic windshield wiper. It can be controlled electrically either by an electromagnet or by an electric motor supplied with electric current from either the engine battery or generator through a switch which could be opened or closed by the operator. The end 6 of the siphon tube 2 is kept embedded axially in the centre of the upper end of a wick 9 which fills the entire length of the evaporator tube 10. A tubular mesh wire 11 lines the entire length of the evaporator tube 10 in between the tube and the wick 9. The upper end of the tubular mesh wire 11 is open while its lower end is closed with wire mesh also or metal sheet with numerous small holes to allow fuel and air to pass through. The tubular mesh wire 11 could be replaced by thin sheet metal tube with perforations. A modified wick device comprising multiple capillary holes 23 is described in detail with reference to Fig. 3. The lower end of the evaporator tube 10 is supported by a baffle plate 15 which contains air holes 16. The lower end of the tube 10 carries primary air tubes 13. In order to secure a fine adjustment of the air/ fuel ratio one of the air holes 16 and the open end of one of the primary air tubes 13 are made variable in size by the use of needle valves (not shown). A small gasoline tank 19 is provided for starting the engine when a heavier liquid fuel such as kerosene or diesel oil is used in the tank 1. It is stated that gasoline or alcohol may be used in the vaporizer.
Patent GB-1107343-A (GB)
Title: Microminiaturised, integrated circuit arrangement
IPC: H01L21/76
Filed: 1966-01-27
Abstract: 1,107,343. Semi-conductor devices. TELEFUNKEN PATENTVERWERTUNGS G.m.b.H. 27 Jan., 1966 [18 Feb., 1965], No. 3703/66. Heading H1K. Active and/or passive components in an integrated circuit are isolated by means of carrier recombination centres. In a planar circuit comprising a transistor and two diodes the transistor is isolated from the diodes by removing a strip of a surface oxide layer and diffusing gold or nickel into the wafer. The recombination centres may also, be uniformly distributed through the wafer, for example by introducing gold into the semiconductor material as it is drawn from the melt. The isolation may also be achieved by scratching the surface, or by removing part of the oxide layer and mordant roughening the surface, to produce the recombination centres.
Patent GB-861050-A (GB)
Title: An improved fastener
Inventor: FERNBERG ERIC BIRGER
IPC: F16B21/20
Filed: 1958-02-05
Abstract: 861,050. Spring clips; cotters &c. F.T. PRODUCTS Ltd. Feb. 2, 1959 [Feb. 5, 1958], No. 3796/58. Classes 44 and 89(2). A fastener for joining two members 22, 23, together so that one can pivot with respect to the other, comprises a strip of spring-metal, part of which is formed into a U-section 10, Fig. 1, the remaining portion being bent to a substantially box-shaped-section having a long side 12 and ends 13, 11. In the limbs of the U-section and the side 12 are coaxial-holes 17-19, the holes in the outer-limbs of the section having circumferential-prongs 20, 21, directed inwardly. The flat-member 22 is a loose fit in the U-section so that a hole 24 therein is in alignment with the holes 17-19, when the crank 25 of the rodmember 23 is forced through the holes in the fastener and the flat-member to the working- position, the prongs grip the rod and retain it in this position.
Patent GB-713747-A (GB)
Title: A manure loader or the like for use with tractors
IPC: A01C3/04
Filed: 1951-02-19
Abstract: 713,747. Load handling machines. FARRING- TON, F. R. W. April 10, 1952 [Feb. 19, 1951], No. 3933/51. Class 78 (3) A load handling attachment for a tractor comprises a beam 12 secured to the hydraulically actuated lift arms 21 and carrying a fork 36 which, on release of a catch 43, pivots about pins 39 to discharge the load. The beam is pivoted to the arms 21 at 20 but, due to the engagement of beam projections 22 with the undersides of the arms the beam cannot move clockwise about pivots 20 and thus, during the initial lifting movement, the beam moves with the arms about an axis 23. When, however, a V-shaped abutment (not shown), which is secured to a beam projection 33, contacts the ends of the link 30, which are locked in the position shown, the inner end of the beam is held so that on further movement of the arms 21 the beam moves about pivots 20 and the fork receives an amplified movement. In addition to tines 34 the fork 36 carries side arms 41,
Patent GB-562426-A (GB)
Title: An improved mounting for projectors and other equipment of cinematograph display vehicles
IPC: G03B15/08
Filed: 1943-03-11
Abstract: 562,426. Vehicles with optical projection apparatus. BRITISH FILMS, Ltd., and BRIGGS, J. A. March 11, 1943, No. 3971. [Class 108 (i)] Optical projection apparatus 14 in a vehicle with a picture screen at its rear end is provided with a support on the upper parts 13 of stanchions 10, upstanding from the floor 11 behind the driver's seat and bent at their upper ends as shown.
Patent GB-101918-A (GB)
Title: Friction Gear.
Inventor: THOMSON JAMES DALGLEISH
IPC: F16H13/02
Filed: 1916-03-17
Abstract: 101,918. Thomson, J. D., and Thomson, G. March 17, 1916. Winding webs.-A friction gear which permits slip of the driven members, applicable for driving winding-rolls for paper or other material to which the material is fed at a constant speed, is cooled by the circulation of air. A central member C is secured to the shaft D for driving the reels &c., is driven by two spring-pressed side members A, B, loose on the shaft D but slidably connected together and driven by a pulley on the sleeve P of the member B. Air for cooling circulates through passages J, K in the members A, B, curved passages E in the member C, and passages H between the side members. A non-conducting and frictional material L, M, preferably " bonded asbestos," is placed between the members.
Patent GB-673829-A (GB)
Title: Improvements in disc brakes
IPC: F16D55/00
Filed: 1949-02-16
Abstract: 673,829. Disc brakes. DUNLOP RUBBER CO., Ltd., and BUTLER, H. J. Feb. 3, 1950 [Feb. 16, 1949], No. 4209/49. Class 103 (i). The friction pads 18, 20, 22 of a disc brake are applied through a pressure-plate 21 by a rod 13 parallel to the brake axis and disposed between a pair of capsules 10 mounted on a torque plate 5, and which engages the mid-point of a lever 16 whose ends are in operative engagement with the respective capsules. Pipes 26, 28 connect the capsules with main and auxiliary pressure sources respectively. Normally both capsules are operated to effect movement of the rod 13, but in the event of failure of either pressure system the other operates one of the capsules to effect brake application. Each brake disc is in two co-planar portions separated by a radial gap through which the rod 13 passes. The end of the rod 13 may be provided with a nut 23 and spring 24 for taking up slack, as described in Specification 631,877. Specifications 625,726, 641,665, 654,754 and 660,209 also are referred to.
Patent GB-853620-A (GB)
Title: Improvements in or relating to withdrawable electric switches
IPC: H01H15/04
Filed: 1957-02-07
Abstract: 853,620. Switchgear structures. COMPAGNIE ELECTKO-MECANIQUE. Feb. 7, 1957 [Feb. 7, 1956], No. 4254/57. Class 38 (5). In withdrawable switchgear, the plug pins, Fig. 4, are mounted on a support 12 on the fixed structure and in the operative position pass through holes 3 in a panel 1, which is detachably secured by means of holes 4 to the movable carriage, so as to serve as fixed contacts. The co-operating blade contacts 6 are non-rotatably carried by insulating elements 7 which are screw-threaded on to a rod 8, the plain ends 9 of which are supported in bearings 2 in slots 11. The rod is connected by links (not shown) to an operating means on the carriage, and the contacts 6 are provided with springs 10 and stops 5. To adjust a contact, the left-hand bearing 2 is pushed inwards and the rod end 9 lifted from slot 11, the contact being then screwed backwards or forwards, or, if necessary, changed to normally-open or vice versa. As shown, pins 13a, 13b have insulating sleeves 14, and pin 16 is shorter than pin 15. In approaching the movable part, the panel 1 may be stopped with contacts 6 in engagement with the tips of pins 13a, 13b, 15. A further movement brings contacts 6 level with insulating sleeves 14, corresponding to an intermediate position, and in the fully-home position all the pins become effective.
Patent GB-660192-A (GB)
Title: Improvements in or relating to radio receivers
Inventor: ROGERS DOUGLAS CECIL
IPC: H03G11/00
Filed: 1948-02-13
Abstract: 660,192. Radio receiving circuits. STANDARD TELEPHONES & CABLES, Ltd. Feb. 11, 1949 [Feb. 13, 1948], No. 4262/48. Class 40 (v). In a receiver having a band-width greater than necessary for the modulation received, filter and pulse-shaping means are used to derive the high or low-frequency components of noise pulses and counteract static. A demodulated wave with superimposed noise pulse, as shown (Fig. 1a), may be applied to a valve 8 (Fig. 3), with a high-pass filter 16 as cathode load, terminating with a resistance 19 and diode 17. The diode input takes the form shown in Fig. 1 (b), its output across cathode load resistance 18 eliminating the negative overswing to produce the pulse (c). The negative overswing contains low-frequency components of the noise pulse frequency spectrum which cancel corresponding low-frequency components in the positive swing. Removal of the negative overswing therefore leaves the pulse (c) containing both low and high frequencies of the original pulse. On combining the latter developed across resistance 18, therefore with a phaseinverted output of the original demodulated wave developed across the anode load 12 of the valve 8 and suitably attenuated by a tapped potentiometer 21 in series with the resistance 18, the tapped output at 22 of the potentiometer is free from noise pulse. In a modification (Fig. 4, not shown), the high-pass filter comprises simply a condenser 23, and a diode 24 clipping the base of the pulse replaces the resistance 19. In a further modification (Fig. 7, not shown), the valve 8 is dispensed with, a condenser 30 acts as a high-pass filter and the diode 17 is reversed so that across its anode load resistance 18 only the negative overswing, containing only low-frequency components of the noise pulse reversed in phase, is produced. On combination with a shunt demodulation output across a tapped potentiometer 21 the low-frequency noise components are eliminated. A final shunt condenser 34 eliminates the high-frequency noise components. Contact rectifiers may replace the diodes. Specification 641,211 is referred to.
Patent GB-1194551-A (GB)
Title: Improvements in Electrical Signalling Systems
Inventor: BEAUFOY RAYMOND
IPC: H04L25/48
Filed: 1967-01-27
Abstract: 1,194,551. Digital transmission systems. PLESSEY BTR. Ltd. 25 Jan., 1968 [27 Jan., 1967], No. 4280/67. Heading H4P. Binary data is encoded by transmitting an alternating signal whenever one or more 1-bits appears in the input data. Each 1-bit is represented by a half-cycle, and each sequence of n 1-bits is terminated by a further half-cycle indicating the 0-bit terminating the sequence. If one or more 0-bits follow that 0-bit no signal is transmitted, but if a 1-bit follows that 0-bit the half-cycle transmitted has the same polarity as the previous half-cycle. At the receiver an element is interpreted as a 1-bit if its magnitude exceeds a given level and has opposite polarity to the previous element. If it has the same sign or if the previous element is zero it is interpreted as a 0-bit.
Patent GB-1088911-A (GB)
Title: Improvements in laundering plants
IPC: D06F34/08
Filed: 1965-02-01
Abstract: 1,088,911. Laundry systems. PELLERIN MILNOR CORPORATION. Feb. 1, 1965 [Aug. 3, 1964], No. 4335/65. Heading D1(A). In a laundry comprising two rooms separated by a partition having at least one washing machine 15 sealingly mounted therein, the machine has doors affording access thereto from each side of the partition and into locking means which prevent both doors being open at the same time. The dirty room is maintained at sub-atmospheric pressure by an extractor fan whereby air entrained into the machine when its doors are operated can only pass from the clean room to the dirty room. The working machine is of the rotary drum type having a variable speed drive. Each door 61 incorporates a lower port 62 which swings downward and outward about a horizontal axis when the door is open to form a support for feeding clothing into the machine. For control circuit for doors, soap supply injector and air control valve means, Figs. 4, 5 and 6 (not shown). should be referred to respectiyely.
Patent GB-574917-A (GB)
Title: Improvements relating to means for squaring the ends of coil springs and the like
IPC: G04D3/00
Filed: 1944-03-08
Abstract: 574,917. Coiling. TROUSDALE, A. E. March 8, 1944, No. 4344., [Class 83 (iv)] The end of a coil spring is squared by compressing the last turn against the face of a jig plate slotted to accommodate the penultimate turn. A base-plate a provided with slots so that it can be adjustably attached in a vertical position by bolts to a bench, has fixed thereon a pair of brackets b provided with grooves d to receive pivot pins e projecting from a pressure plate f and grooves h to receive one of a series of jig plates g which are angularly slotted at n to suit the pitch and size of a right- or left-hand spring. The plate g is firmly held in position by screw-adjusted braces j provided with recesses k engaging fulcrum pins c in the brackets b, and the pressure plate which is operated by screw, hydraulic pressure or electric power is provided with a central mandrel r to engage the bore of the last turn of the spring. The pressure plate, which is semi-floating so as to adjust itself automatically to the end face of the last turn, may be provided with an annular groove s to receive the last turn to prevent lateral deviation from the required diameter. The mandrel r may be replaced by a mandrel r<1>, Fig. 4.
Patent GB-1006791-A (GB)
Title: Improved electromagnetic actuator
IPC: H01F7/13
Filed: 1961-02-06
Abstract: 1,006,791. Electromagnets. A. J. L. CROMPTON. Feb. 9, 1962 [Feb. 6, 1961], No. 4377/61. Heading H1P. In an electromagnetic actuator comprising a winding 21 on a bobbin 22... 24 having a tunnel 23, e.g. of brass, through its centre and surrounded by a magnetic yoke 12, 13, 18, forming part of a magnetic circuit traversed by flux set up by the winding, and a movable armature or core 35 which is drawn along the tunnel when the winding is energized, the characteristic is modified by the provision of a plurality of fixed magnetic shunts 28 ... 30 disposed outside the tunnel and alongside the armature path at spaced intervals in the direction of armature travel so that the armature passes the shunts successively during said travel. The shunts are plates having mutually different thicknesses and/or spacings, and local variations of armature pull may be avoided by grooving the end of the armature and/or so deforming the plates adjacent their bores that a substantially continuous helix is formed. For A.C. applications the magnetic circuit components are laminated. The yoke has a non- magnetic stop member 14, and one bobbin cheek 24 is insulating and carries winding terminals, whilst the other, 22, is of magnetically permeable material, insulating linings 25, 26 being provided.
Patent GB-179628-A (GB)
Title: Improvements in or relating to two stroke cycle internal combustion engines for actuating locomotives and the like
IPC: F02B25/00
Filed: 1921-02-07
Abstract: 179,628. Macchioni, A., Hocke, E., and Soc. Anon. Italiana G. Ansaldo & Co. Feb. 7, 1921. Starting.-In twostroke engines having opposed pistons, one governing exhaust ports and the other the scavenging ports, and having means for admitting compressed air between the pistons, the admission ports for the compressed air are controlled by the piston that controls the scavenging ports. Fig. 1 shows a locomotive engine comprising two cylinders 16, 17 each having two pistons 6, 7 controlling respectively scavenging and exhaust ports 4, 5. Compressed air is admitted by a conduit 10 leading to ports 9 also controlled by the pistons 6. The conduit 10 is provided with a valve 12 which has a through-port 18, Fig. 2, and is rotated once for every two cycles of the engine. The port 18 is made tapering, as shown, so that when the valve is moved axially by a governor, the port opening is decreased as the speed of the engine increases. The injection of compressed air commences shortly before the scavenging parts 4 are closed.
Patent GB-211876-A (GB)
Title: Improvements in or relating to mining machines
IPC: E21C35/14
Filed: 1924-02-20
Abstract: 211,876. O'Toole, E. Feb. 20, 1923, [Convention date]. Coal-cutting machines. - A mining-machine comprises a frame carrying a cutter chain, a housing over the frame and below the upper ends of the cutter bits, a conveyer extending parallel with the chain and in rear thereof, and means for driving simultaneously the conveyer and chain. The frame A carries a cutter chain 12 having the usual bits 14 and extending o v e r forwardly inclined sprockets 8, 10, of which 8 is mounted in an adjustable bearing 9. The conveyer comprises T-shape members 25 secured to chains 26, 27 trained over idler sprockets 18, 19 and driving-sprockets 21, 22, and is raised at the delivery end to deliver into cars B from the conveyer plate 17. For advancing the machine, a drive shaft 28 journaled on the base carries worms 30 meshing with worm wheels 31 freely movable on threaded bars 32. These latter carry nuts 30<a> adapted to be .locked to the wheels 31 by pins 31<a>, and are positioned against removable jacks 34 at the rear while their forward ends project through openings 35 in the frame. The wheels 31 rest on collars 36 round the openings 35 so that as the bar 28 rotates, the nuts 30<a> are fed along the bars 32 and advance the machine. The bars 32 are arranged in pairs so that one bar of each pair may be put ready in position while the other is advancing the machine. The chain 12 is driven from a motor 39 through a shaft 40 and worm 41. The shaft 28 is rotated from a stub shaft 46 through a chain 50, and the convever chains are driven from the same stub shaft through chains 55, 60 and gears 54, 56. As the machine cuts under the coal and advances into the kerf formed by the chain 12, the coal falls on the housing 7 and is pushed on to the conveyer plate 17 and delivered into trucks. Hydraulic jacks 70 and cap pieces 71 serve to support the roof.
Patent GB-1087572-A (GB)
Title: Improvements relating to the production of alkyl chlorides
IPC: C07C17/10
Filed: 1964-02-03
Abstract: Detergent alkylates are obtained by reacting an aromatic hydrocarbon, in the presence of an alkylating catalyst, with a chlorinated product obtained by continuously feeding a liquid C10- 17 paraffin feedstock, containing not less than 95% normal paraffisn, into o e end of a reaction zone comprising one or more towers, withdrawing the product at the other end and injecting chlorine into the reaction zone at not less than 2 points along the zone in such quantities that the product contains no more than 35 atoms chlorine per 100 molecules paraffin feed.  It is preferred to use mixtures of paraffins whose chain lengths differ by not more than 5 carbon atoms in order to facilitate separation of the detergent alkylate from unreacted paraffin. Examples 3 and 4 describe the alkylation of benzene, using AlCl3 as catalyst, with a chlorinated C10- 13 paraffin.ALSO:Alkyl chlorides are made by continuously feeding a C10- 17 paraffin feedstock, containing not less than 95% normal paraffins, into one end of a reaction zone comprising one or more tower reactors and adding chlorine to the reaction zone at not less than 2 points along said zone in such quantities that the content of combined chlorine in the product is not more than 35 atoms chlorine per 100 molecules of paraffin feed.  It is preferred to operate at 50-150 DEG  C. and to remove by-product HCl at points between the chlorine feeds.  The preferred feedstock is that which contain paraffins whose chain lengths differ by not more than 5 carbon atoms.  The chlorinated paraffins are used to prepare detergent alkylates (see Division C5). Examples describe the chlorination of n-decane and a C10- 13 mixture of n-paraffins.