baber/WOPTO huggingface dataset:
Patent GB-722031-A (GB)
Title: Improvements in or relating to electrical apparatus of the kind in which an image isarranged to be produced on the screen of a cathode ray tube
IPC: G01R27/32
Filed: 1951-12-18
Abstract: 722,031. Cathode-ray oscilloscopes: frequency and attenuation measurement. GENERAL ELECTRIC CO., Ltd., and BRYDEN, J. E. Nov. 21, 1952 [Dec. 18, 1951], No. 29624/51. Class 37. In a cathode-ray oscilloscope for displaying the attenuationfrequency characteristic of a circuit or for measuring a frequency, the time base is calibrated in terms of frequency by varying the frequency of an oscillator synchronously with the time base, heterodyning the oscillator output with a signal comprising a plurality of equally spaced frequencies and applying the resultant sum and difference frequencies through a sharply tuned circuit to intensity modulate the time base. Displaying attenuation -fre - quency characterization As shown, the frequency of oscillator 5 is cyclically varied over a range of 100 Mc/s. in the region of 2000 Mc/s. by a motor 9 which also drives a cam 11 operating a contact 12 to trigger the time-base generator 4 and the output from the oscillator is applied to the Y deflector 3 of the oscilloscope 1 via the circuit under test 6 and an amplifier 41, the envelope 16 of the resultant display, Fig. 2, indicating the attenuationfrequency characteristic of the circuit 6. The oscillator 5 is amplitude modulated at 1 kc/s. by oscillator 13 to improve the visibility of the display. In order to calibrate the display, a signal comprising a plurality of high harmonics of 20 Mc/s., 31, Fig. 3, is generated by applying the output from a 10 Mc/s. crystal oscillator 21 through a frequency doubler 22, low-pass filter 23, harmonic generator 24 and high-pass filter 25, the signal being heterodyned in mixer 26 with an output from oscillator 5 and applied to amplifier 27 and band-pass filter 28 which have band widths of 5 Mc/s. Œ 150 Kc/s. and 5 Mc/s. Œ 50 Kc/s. respectively, so that each time the frequency of oscillator 5 is 5 Mc/s. above or below any of the harmonics 31 a pulse of oscillations is passed by amplifier 27 and filter 28 which is rectified at 33 and applied via contacts 34 to intensity modulate the oscilloscope to give bright bands 17, Fig. 2, corresponding to frequencies 32, Fig. 3. Contacts 34 are opened by cam 11 during the flyback and the amplitude of the pulse output from amplifier 27 is maintained constant by means of detector 35. The frequency of the outputs from oscillator 5 may be changed before application to mixer 26 and circuit 6. Frequency measurement. In this case the arrangement illustrated in Fig. 1 is modified as shown by the broken lines and oscillator 13 is omitted, the output from oscillator 5 being heterodyned in mixer 38 with the signal of unknown frequency which is applied through alternator 37 and the output from mixer 38 being applied to the Y deflector via amplifier 39 which has a low cut-off frequency so that the trace is deflected when the frequency of oscillator 5 passes through that of the applied signal.
Patent GB-1277727-A (GB)
Title: Mining machine having a helix or auger with cutting elements around the edge thereof
Inventor: WHITE LETCHER TOULMIN
IPC: E21C25/06
Filed: 1970-06-18
Abstract: 1277727 Mineral-mining installations L T WHITE 18 June 1970 29652/70 Heading E1F In a mineral-mining installation the cutting means comprises a number of end to end coupled shafts 36 carrying pick-armed scrolls 28 that are urged laterally into a mineral face by rams 52 acting between roof supports 24 and the coupling bearings 34 between adjoining shafts to bring down mineral and cause this mineral to be moved along to one end of the installation as the mineral is confined between the helixes and a scavenger board 104 supported from the couplings between the shafts and the rams. The rams 52 are vertically swingable by rams 76 and the board 104 is formed by pairs of vertically overlapping flat plates that are slideably connected with one another. This arrangement of rams 52, 76 and board 104 allows of satisfactory vertical traversal of the scrolls over the face and retention of mined mineral in the path of the scrolls for removal to an end of the installation.
Patent GB-942347-A (GB)
Title: Improvements in yarn feeding and controlling mechanism in multi-feeder circular knitting machines
Inventor: WIDDOWSON ALBERT HENRY
IPC: D04B15/48
Filed: 1961-08-17
Abstract: 942,347. Knitting machines. WILDT MELLOR BROMLEY Ltd. Aug. 17, 1962 [Aug. 17, 1961], No. 29683/61. Heading D1C. A yarn feeding and controlling mechanism in a circular multifeeder knitting machine comprises two automatically controlled elements in association with each yarn feed wheel which feed yarn around a slip-resisting surface of the yarn feed wheel and are pivoted to move from a position where yarn is fed around said wheel to a position where said yarn is held clear of the wheel. A silicone-elastomer covered yarn feed wheel 7 (Fig. 2) is driven by bevel gears 12, 13 and a shaft 9 from a central machine shaft. Fulcrum pins 14 mounted on a small block 27 fixed to two vertically spaced rings 28, 29 support yarn guiding elements 8, 8<1> and pinions 15 are fixed to arms 8a of said yarn guiding elements to mesh with racks 16a, 16b which are attached to the rings 28, 29. The yarn 7 is fed through porcelain eyelets 21 at the ends of the yarn guiding elements 8, 8<1> the position of a plate 20 containing one of these eyelets being adjustable (Fig. 2) to place a differing amount of yarn in contact with the yarn feed wheel for a given position of the yarn guiding elements due to the taper of the feed wheel 7. The ring assembly 28, 29 is moved by an arm 32 (Fig. 8) connected through a bell crank 33 to a cam roller 34 which is acted upon by cams 35, 36 in the machine head wheel (Fig. 10). The cam roller 34 is normally retracted out of contact with said cams 35, 36 by a spring 44 but is brought into engagement by the action of cams 52, 53 on a roller (not shown) which depresses the bell crank 33 by means of a linkage system 47, 49, 50, 51. The relative motion between the rack and pinion gearing caused by the movement of the ring assembly 28, 29 causes more or less yarn to be placed in contact with the yarn feed wheel 7 depending on the direction of the relative movement. Drums or equivalent bodies as disclosed in Specification 428, 799 can also be used to control the operation of independent parts of yarn guiding elements 8, 8<1> deviation.
Patent GB-461919-A (GB)
Title: Improvements in ophthalmic mountings
IPC: G02C1/02
Filed: 1935-10-28
Abstract: 461,919. Spectacle frames. TENNANT, W. J. (American Optical Co.) Oct. 28, 1935, No. 29735. [Class 97 (i)] A shock-absorbing mounting for the sidepieces of rimless spectacles is attached through a hole in the lens and carries a plurality of superimposed resilient members which engage the edge of the lens. As shown in Fig. II, the side-piece 3 is attached to the lens 5 by a pin 7 and carries resilient members 11, 12, 13 held together by a pin 10. As shown, the second contacting point of the mounting and lens is furnished by a non-resilient claw 6, but the member 11 or all of the members 11, 12, 13 may be extended to replace the claw 6. In the form shown in Figs. V and VI, the resilient members 24, 25, 26 have lateral extensions 21, 22, 23 respectively which are attached to the lens 32 by a pin 28 soldered to the extension 21, the members being held together by a pin 27. This construction allows resiliently controlled lateral movement of the mounting in the plane of Fig. VI and resiliently controlled rotation about the axis of the pin 28. The mounting may be attached on the centre line or on the upper part of the lens.
Patent GB-569035-A (GB)
Title: Improvements in the production of toluene from crude benzole
IPC: C07C15/06
Filed: 1939-11-09
Abstract: Crude benzole obtained from coal carbonisation is fractionated and the xylene-rich fraction is heated in the presence of hydrogen or hydrogen-containing gases to a temperature between 650 DEG  and 1000 DEG  C., preferably 700-850 DEG  C., whereby the xylene is substantially converted into toluene.  The hydrogen should not be less than 30 per cent, and should preferably exceed 50 per cent by volume of the vapour treated.  The best yields of toluene are obtained by subjecting the xylene mixture to a temperature of 750 DEG C. for 0.5-2.5 seconds or to 800 DEG  C. for 0.15-0.50 seconds.  As gas containing hydrogen may be used a part of the gas produced in the carbonisation plant and stripped to remove the crude benzole. The toluene fraction of the crude benzole may have its quality improved by subjecting its vapour to a temperature between 500 DEG  and 750 DEG  C., preferably 600-700 DEG  C.  The treatment of both fractions is effected in a tube of metal or refractory material. Specifications 112,878 and 115,066, [both in Class 2 (iii)], are referred to.
Patent GB-678019-A (GB)
Title: Modified condensation products of propyl or higher alkyl phenols and formaldehyde
Inventor: SARGENT EDWARD HENRY GEORGE
IPC: C08G14/06
Filed: 1949-11-21
Abstract: Modified phenol-aldehyde resins which are hard wax-like products soluble in hydrocarbon oils and paraffin waxes and which can be used as substitutes for vegetable waxes are obtained by condensing a condensate of a propyl or higher alkyl substituted phenol and formaldehyde with a molecular excess of an amide of the general formula RCONHR1 where R is an aliphatic radical containing from 8-30 C. atoms and R1 is hydrogen or an alkyl radical having a chain of less than 5 C. atoms, e.g. stearamide, lauramide, or mono methyl stearamide.  Alternatively the amide may first be reacted with formaldehyde and the product converted to a di-imide by prolonged heating.  The condensation products of the di-imide and the phenol-formaldehyde have melting points of 130-140 DEG  C. and may be used in coating compositions, polishes, carbon-ink papers &c.  In examples: (1) 560 gs. stearamide, are condensed at a temperature not exceeding 170 DEG  C. with 280 gs. of the dialcohol of p-tert-butylphenol (obtained by condensing 2 mols. formaldehyde and 1 mol. p-tert-butyl phenol); a reddish solid of m.p. 92 C DEG  is obtained; (2) 580 gs. mono methyl stearamide are condensed with 460 gs. p-tert-octyl phenol dialcohol; (3) 370 gs. lauramide are condensed with p-tert-octyl phenol dialcohol; (4) lauramide is condensed with the tetra alcohol of dihydroxy diphenyl methane; (5) stearamide is condensed with the condensate obtained by condensing formaldehyde with anacardol obtained from cashew nutshell liquid; (6) the di-imide obtained by condensing stearamide with formaldehyde is condensed with the dialcohol of p-tert-butyl phenol.  Specifications 567,128 and 635,798 are referred to.
Patent GB-781881-A (GB)
Title: Improvements in and relating to pull-wire signalling systems
IPC: B66B19/06
Filed: 1954-10-18
Abstract: 781,881. Mine haulage signalling apparatus. DAVIS & SON DERBY, Ltd., J., and DAVIS, W. B. Oct. 18, 1955 [Oct. 18, 1954], Class 78 (5). A signalling apparatus for mine haulage comprises a manually-operated pull-wire W which, in addition to actuating a lever D to operate bell E, also carries an electric current, whereby the bell rings in the event of the wire breaking. Thus, current from transformer T passes through switch C, wire W and relays R1, R2. Switch C is opened both by a pull on wire W and by accidental breaking of wire W so that relays R1, R2 are released to stop the haulage motor and to operate bell E.
Patent GB-360599-A (GB)
Title: Improvements in or relating to the manufacture of compositions of or containing rubber and articles thereof
IPC: C08K3/18
Filed: 1930-10-07
Abstract: A method of reinforcing rubber or rubber compositions consists in treating the rubber with decomposable or reactive organic derivatives of metals and producing the reinforcing agents in situ by effecting the decomposition of these derivatives within the rubber.  Examples of suitable derivatives are metallic carbonyls, e.g. nickel carbonyl, and metallic alkyl or aryl compounds such as lead tetraethyl, mercury diphenyl, 2-chloromercuric thiophene, and mercury phenyl acetate.  In examples: (1) 100 c.c. of a 5 per cent solution in benzene of masticated pale crepe is mixed with 25 c.c. of nickel carbonyl; after about 20 hours the solution gels: (2) to a small amount of the above mixture, 10 per cent of sulphur is added; the mixture rapidly darkens and becomes black; on drying on a glass plate, a tough black film of rubber insoluble in benzene is obtained; (3) uncured valve tubing is immersed in a solution of sulphur in carbon disulphide, dried, and immersed in a 50 per cent solution of nickel carbonyl; (4) to 50 c.c. of a 10 per cent solution of masticated pale crepe in benzene, 10 c.c. of commercial lead tetraethyl is added and then 10 c.c. of a 10 per cent. solution of disulphur dichloride in benzene; heat is evolved and the solution sets rapidly to a tough solid gelatinous mass. Other examples are given.
Patent GB-1422382-A (GB)
Title: Tr-limiter apparatus
IPC: H03G11/00
Filed: 1973-06-25
Abstract: 1422382 T-R switches VARIAN ASSOCIATES 25 June 1973 [29 June 1972] 29978/73 Heading H1D A device for limiting the power of a microwave signal comprises an aluminium housing 26 defining a cavity 31 which is intersected by an aperture 37 containing a quartz vial 47 filled with chlorine and which is held against a R.F. input slot 44 by means of a retaining member 52 which is urged against the vial by a spring 61. A tuning screw 68 is provided for the cavity 31. In a modification, two retaining members 52 are provided on opposed sides of the vial 47.
Patent GB-1376483-A (GB)
Title: Ultrasonic transducer assembly for use in an ultrasonic treatment apparatus
IPC: B08B3/12
Filed: 1972-06-27
Abstract: 1376483 Ultrasonic transducers BRANSON INSTRUMENTS Inc 27 June 1972 [1 July 1971] 29979/72 Heading H4J An ultrasonic transducer assembly 16 for immersion in a liquid comprises a liquid-tight enclosure 17 and at least one electro-acoustic transducer 30 having a frontal surface coupled surface coupled via a coupling means in sonic energy transmitting relationship to an inside surface of the enclosure 17. A heat conducting medium such as insulating oil or a solid material fills the enclosure 17 and is in contact with the coupling means. A plurality of tubes 40 traverses the enclosure, the outer surfaces of the tubes 40 being in contact with the heat conducting medium and being sealed in liquid-tight relationship to opposite walls of the enclosure 17. The interiors of the tubes 40 are in contact with liquid when the enclosure is immersed therein and such liquid conducts heat away from the assembly 16. The transducers are piezo-electric or magnetostrictive. As described frontal surfaces of piezo-electric devices 30 are secured by epoxy adhesive to an aluminium plate 32 which is secured by epoxy adhesive to a wall 17A of enclosure 17. The aluminium plate 32 is in contact with the heat conducting medium. The enclosure 17 and tubes 40 are made of polypropylene and, in use, they are immersed in a liquid for cleaning, degreasing, plating and etching. This liquid may be contained in a polypropylene tank (10), Fig. 1 (not shown). The transducers 30 are supplied by cable within a protective tube 50 with electrical energy at a frequency within the range 16 kHz to 50 kHz. Enclosure 17 has a fill pipe 46 and cup 48 for filling with the heat conducting medium, and ears 22 so that it may be suspended by inert wires (20), Fig. 1 (not shown), such that the tubes 40 are vertical.
Patent GB-243755-A (GB)
Title: Improvements in or relating to vehicles with cylindrical or like propellers rotatingin a flowing medium
IPC: B62D57/04
Filed: 1925-11-27
Abstract: 243,755. Klein, M. Nov. 28, 1924, [Convention date]. No Patent granted (Sealing fee not paid). Propelling by rotary cylinders.-In ships with cylindrical propellers rotating in the air or water flowing past the vehicle the direction of the fluid stream is changed through about 90‹ as in the conduit a before it passes the rotating cylinder b, so that as the resultant force on the axis of the cylinder is perpendicular to the direction of flow, on the Magnus principle, this force acts in the direction of motion of the vehicle. The cylinder b is rotated by any reversible mechanical device, which may be driven by the fluid stream past the vehicle. The conduit a may be arranged entirely in a horizontal plane, the cylinder axis being vertical in this case. Two or more cylinders may be employed, and it is stated that propellers other than cylinders may be used. As applied to ships both the air stream and the water stream past the ship may be used.
Patent GB-280557-A (GB)
IPC: B22D13/02
Filed: 1927-11-09
Abstract: 280,557. Soc. d'Expansion Technique, (Assignees of Portevin, A.). Nov. 10, 1926, [Convention date]. Casting-machine; metalpouring. - Steel or other metal 3 poured into a vertical centrifugal mould is deflected by a body 1 having a number of radial passages 4 preferably shaped like those in a reaction turbine. The body 1 may be fixed to a tube k, which is rotated by the reaction of the metal or by means of a motor 5. The Specification as open to inspection under Sect. 91 (3) (a) states also that the body 1 may be moved axially without rotation. This subjectmatter does not appear in the Specification as accepted.
Patent GB-961905-A (GB)
Title: Improvements in or relating to a mechanical chair particularly for chiropodist's use
IPC: A61G15/00
Filed: 1962-08-03
Abstract: 961,905. Chiropodists' chairs. B. BARBIERI. Aug. 3, 1962, No. 30074/62 Heading A4J.  A chiropodist's chair comprises an arm-chair mounted on a plate 6, 7 which is slidably mounted on rails 2, means for braking and stopping the chair sliding along the rails 2, and a leg-rest 26 mounted between the same rails and independently shiftable with respect to the chair, proper. The braking or stopping means comprises hydraulic cylinders 14 connected together by a pipe 17, and having their pistons 15 on a common piston rod 16 which is connected by member 18 to the plate 6-7. As the chair moves along the rails fluid flows through the pipe 17 from one cylinder 14 to the other, thus braking the movement. A throttle valve may be inserted in pipe 17 to regulate or stop the movement. The leg rest 26 is mounted on a wheeled frame 23 so as to be longitudinally adjusted and it may be mounted on a telescopic upright 25 to be vertically adjusted. The back rest 11 of the chair is hinged to the seat 10 and is urged to an upright position by spring means. These may comprise a pair of pistons 20 slidably mounted in pneumatic cylinders 19 mounted at the top of arm rests 13.
Patent GB-1001870-A (GB)
Title: An improved magnetic head especially for use in conjunction with tape recording devices
Inventor: DYER ROBERT BERKELEY
IPC: G11B5/105
Filed: 1961-08-23
Abstract: 1,001,870. Making magnetic recording &c. heads. ELECTRIC & MUSICAL INDUSTRIES Ltd. Aug. 23, 1962 [Aug. 23, 1961], No. 30356/61. Heading G5R. [Also in Division B3] A resilient member clamps the components of a head assembly in two mutually perpendicular directions. The assemblies may then be encapsulated and finish-ground on tapecontacting surfaces. The assemblies may be aligned in jigs before clamping, but the jig arrangements are not detailed. In one embodiment, a four-petal steel clamp 30, Fig. 5, exerts forces to consolidate the stack of layers forming a screened, two-track tapehead (Figs. 1-4, not shown) and to force the core-members together, the insertion of the assembly into an external screening can 40, Fig. 6, increasing the effective pressures. In a second embodiment (Figs. 7-9, not shown) four separate resilient springs acting through plastics clamping members serve an equivalent purpose to the four petals of Fig. 5. In a third embodiment, Fig. 10, the core laminations are in three parts 53, 54, 60 and a clip 65 acts through plastics members 51, 52 against 45-degree flats 68, 69 on the coremembers to act to close the gap 55 and to clamp the parts 60 to the parts 53, 54 away from the gap 55.
Patent GB-520411-A (GB)
Title: Improvements in or relating to relaxation oscillation generators
IPC: H03K4/18
Filed: 1938-10-21
Abstract: 520,411. Valve generating circuits. STANDARD TELEPHONES & CABLES, Ltd., and BLACK, D. H. Oct. 21, 1938, No. 30523. Addition to 485,120. [Class 40 (v)] In a circuit as described in the parent Specification in which the discharge of a condenser C1 in a relaxation oscillator is assisted by the secondary emission from the plate P of a valve, an extra grid G3 is provided which remains positive relative to the plate P and is thus capable of withdrawing the secondary electrons and ensuring that the condenser C1 is more completely discharged. Specification 518,240 is referred to.
Patent GB-1504980-A (GB)
Title: Raster display apparatus
IPC: G09G5/42
Filed: 1975-07-22
Abstract: 1504980 Displays INTERNATIONAL BUSINESS MACHINES CORP 22 July 1975 30554/75 Heading G4H [Also in Division H4] A raster display apparatus comprises a display device e.g. a C.R.T. or matrix of light emitting diodes), means for computing line by line, while a frame is being displayed, which points are to be displayed, means for detecting when the computation time for a line or group of lines exceeds a given time, means for issuing a signal on such detection, and means for halting at least the vertical component of the raster scan on reception of said signal. The computer feeds to the display a video signal, line sync pulses 2(a), a line time base 2(b), frame sync pulses (2c), and the frame time base 2(d). Graph 2 (e)shows the frame clamp signal which clamps the frame time base 2(d) when necessary until the computation is complete. The video signal may be stored in two buffers prior to output to the display, each buffer storing an integral number of lines, e.g. 1. When one buffer is being loaded the other outputs the video signal to the display. A frame clamp signal is generated when a signal indicating that a buffer is being loaded coincides with it, the clamp signal being maintained until the next line sync pulse following the end of the loading signal. During the clamping signal the device repeats the last displayed line at reduced brightness. Fig. 5 shows a circuit in which the frame clamp signal (input at 56) operates on the <SP>1</SP>y deflection coil 52 of a C.R.T. Anplifier 51 controls the current to coil 52 according to the charge on capacitor 53, which is normally charged at a constant rate through transistor 54. During frame clamp, transistor 55 conducts to prevent charging and the capacitor discharges through transistor 57 which is made conductive by the frame sync signal at 58. In another embodiment (Fig. 7, not shown)the line sync pulses increment a counter (71) except during frame clamp -the output of the counter being fed to the deflecting coil via a D/A converter (73).
Patent GB-1138372-A (GB)
Title: Storage apparatus
Inventor: BOYCE GUY BARON
IPC: B05B15/00
Filed: 1966-07-07
Abstract: 1,138,372. Arrangements of pulleys; storage of hoses. BINKS-BULLOWS Ltd. 26 June, 1967 [7 July, 1966], No. 30559/66. Headings B8B and B8M. An apparatus for storing paint hoses 14 extending between fixed valves 16 and movable spray gun couplings 20, comprises hose supporting members 11 which are suspended on a cord 18, the latter being of sufficient length to permit one member 11 to move into a lower operating position 11a, the movement of any other member 11 downwards causing the first said lowered member to move up into its stored position. The cord 18 is fixed at its ends and is supported therebetween on rollers 17. Rollers 19 support the members 11 on the cord 18 intermediate pairs of rollers 17, and sheaves 12 support the hoses 14 on the members 11. The hose 14 leaving a sheave 12 passes between the latter and a roller 22 mounted on an arm pivoted at the axis of the sheave 12, such that as the hose is pulled down for use, the roller 22 and sheave 12 engage opposite sides of the apparatus easing 10 down which they roll. At the outlet from the casing 10 the hose passes around a roller 23 mounted on an arm 24 pivotal about a vertical axis.