baber/WOPTO huggingface dataset:
Patent GB-1008756-A (GB)
Title: Improvements in and relating to the treatment of coal tar products
Inventor: WADDINGTON WRIGHT
IPC: C10C1/20
Filed: 1962-04-13
Abstract: The hydrogenation of creosote oils to obtain hydrocarbons is effected at 750-900 DEG  C. and at a hydrogen partial pressure of 100-800 p.s.i.g. The creosote oil may be derived from coke oven or vertical retort sources, boil in the range 200-360 DEG  C. and be unrefined containing acidic and basic constituents or alkali and/or acid washed to remove such constituents.  Pure hydrogen or a hydrogen-containing gas, e.g. coal gas or synthesis gas, may be used, preferably to provide at least 5 mols per mol of oil. Conversion is preferably effected in an otherwise empty tube for times of up to 1 minute. Benzene and naphthalene are the principal, non-gaseous products and methane the principal gaseous product apart from hydrogen. Specification 870,041 is referred to.
Patent GB-149812-A (GB)
Title: Improvements relating to air supply valves for steam-generator furnaces
IPC: F23L13/02
Filed: 1919-06-10
Abstract: 149,812. Park, J. June 10, 1919. Air-supply, regulating. - The air-admission valves J, J' in the front of a water-tube boiler are operated by an arrangement of linkage adapted to close and lock both valves by a single movement of the handle. Each set of linkage comprises a pair of arms A pivoted at D to the casing and connected by links B to cross-bars C secured to the handle. Thus on pulling out the handle, a bar E connecting the outer ends of the arms A sweeps over the inner side of the valve and in the extreme position presses it tight against the casing in closed position.
Patent GB-567697-A (GB)
Title: Improvements in and relating to hinge pins, retainer pins and the like provided withself-locking means
IPC: F41A11/00
Filed: 1943-09-07
Abstract: 567,697. Hinge &c. pins. MARTIN, J. Sept. 7, 1943, No. 14614. [Classes 44, 65 (ii), 89 (i) and 89 (ii)] Relates to hinge or retainer pins and consists in means for rendering them self-locking. The pin has a hollow end tapering at 6, the bore leading by a conical part 10 to a smaller hole 8 that is a push fit for the end 7a of a cranked pin of spring wire that also engages a bore or slot in a detent member 5 projecting through a hole in the wall of the pin. One end of the wire is pointed at 7e to facilitate insertion and the other end 7b may project to facilitate release of the detent which may take various forms. The pin may be slotted instead of hollow.
Patent GB-671400-A (GB)
Title: Improvements in and relating to fly presses
Inventor: SMART RALPH WALTER
IPC: B30B1/22
Filed: 1949-05-31
Abstract: 671,400. Screw presses. OMES, Ltd. May 31, 1950 [May 31, 1949], No. 14635/49. Class 87(ii) A power driven fly-press, of the type having means for controlling operation of the flywheel comprising a cylinder-andpiston device operatively connected to clutch means for coupling the flywheel to the driving means, has means for biassing the movable member of the cylinder-andpiston device away from its neutral position so as to afford a slipping engagement of the clutch means sufficient to counteract the gravitational tendency of the press tup to descend. The control valve 52 is operated by a hand-lever 31 so that, in one extreme position of the hand-lever, compressed air passes through a feed pipe 32 into the cylinder 30 and causes the piston 34 to move in a direction such that the clutch lever 21 engages the friction disc 18 with the flywheel 14 and causes the tup to move downwards; in the other extreme position of the hand-lever 31 compressed air passes through a feed pipe 33 and moves the piston 34 to bring about the engagement of the friction disc 19 with the flywheel; and in the mid position (as shown) of the hand-lever 31 no compressed air is admitted and the piston 34 would be in-a neutral position apart from the bias. The air supply to the valve 30 is received through a pressure reducing valve 42 and air filter 51. A branch pipe line 43 and valves 44, 45, 46 permit the filter to be cleaned by blowing air through it in a reverse direction. The bias to counteract the weight of the tup is provided by a weight 37 on the arm 38 of a bell-crank 35 with its other arm 39 linked to the clutch lever 21 so as to press the friction disc 19 against the flywheel. To prevent over-running of the tup in an upward direction a member 50 is connected to it having a stop collar 49 which, when the tup nears the top of its stroke, engages a projection 47 and rotates the bell-crank 35 against the weight 37. The stroke of the tup may be varied by adjusting the stop collar 49. The Provisional Specification mentions a construction in which a compression spring tends to centralize the piston in the cylinder 30 and adjusting means to give equal spacing of the discs 19 from the flywheel, and that the bias to counteract the weight of the tup may take the form of an adjustable spring device.
Patent GB-475804-A (GB)
Title: Improvements in or relating to range finders
IPC: G03B13/20
Filed: 1936-05-25
Abstract: 475,804. Coincidence range finders. KODAK, Ltd. May 25, 1936, No. 14686. Convention date. May 23, 1935. [Class 97 (i)] In a pocket or portable coincidence rangefinder of the type comprising two beamaccepting windows spaced apart along a constant base and having means for bringing the two partial images, derived from the two windows, into alignment with an eyepiece, an image of an internal scale, illuminated by light from one of the windows, is projected into the eyepiece by means separate from the eyepiece to allow the range to be read directly. The scale 27, on a glass cover 131, is carried by a rotatable knob 22 in the window 13, light from which is reflected by mirrors 18 and 17 to the eyepiece 14 placed opposite the second window 12. The mirror 17 covers half the window 12 so that part of the image is seen directly through the window 12 and the other half is seen by reflection in the mirror 17. The images are brought into coincidence by rotation of the knob 22, a cam surface 24 of which is engaged by a cam follower 25 carried by a lever 16 pivoted at 15 and bearing the mirror 17, the follower being pressed into engagement with the cam surface by a spring 26, so that rotation of the knob 22 causes rotation of the mirror 17. The window 13 is limited by an apertured plate 19 carrying an indicator 28, Fig. 2, to register with the scale 27, the image of this scale being projected into the eyepiece by means of mirrors 18 and 17 and a lens 29. Screws 36 are provided for adjusting the mirror 17 relative to the lever 16 to register the two parts of the image correctly, and a clip 37 may be provided for attachment to the person, or the instrument may be attached to a camera by a screw-socket 39. An external scale may also be provided on the knob 22.
Patent GB-497201-A (GB)
Title: Improvements in tight-fitting bolts
IPC: F16B31/04
Filed: 1938-05-17
Abstract: 497,201. Bolts. SCHAURTE, W. T. May 17, 1938, No. 14725. Convention date, June 23, 1937. [Class 89 (i)] The non-threaded portion a of a bolt is formed with an axial bore d and with depressions b which extend along the shank of the bolt as substantially broad and flat helical convolutions, the cross-sectional area of the shank wall remaining uniform over the entire length of the bolt, including the threaded portion c. The depressions b may constitute a single helix or multiple helices, and may have an inclination opposite to that of the threads on the portion c.
Patent GB-257987-A (GB)
Title: Improvements in driving gear for spinning and like frames used in the production of yarns or threads of fibrous substances
IPC: D01H1/20
Filed: 1925-06-06
Abstract: 257,987. Dover, W. H. June 6, 1925. Driving-arrangements.- In a driving-mechanism for spinning and like machines, the bearings 10, 13 of the shafts 4, 9 are adjustably mounted on a slotted bracket A<1> fixed to the framework A near the outer end of the driving shaft 4 and outside the pulleys 2, 5. The driving pulley 2 is fixed on a sleeve 3 loose on the shaft 4, a driving wheel 7 being also fixed on the sleeve 3 and arranged to drive the shaft 4 through the wheels 8, 11, 12. The wheels 11, 12 are detachable and may be changed to vary the speed, while the wheels 7, 8 may also be changed and if necessary, the position of the shaft 9 relative to the shaft 4 altered to accommodate the different wheels. Alternatively, the sleeve 3 may be omitted. The Provisional Specification describes a further modification in which the pulley shaft is in alignment with the shaft of the cylinder 6, but is independent thereof.
Patent GB-669589-A (GB)
Title: Improvements relating to the treatment of sewage and other sludge-containing liquors
IPC: C02F11/13
Filed: 1949-06-01
Abstract: 669,589. Treating sewage. PORTEOUS, W. K. May 9, 1950. [June 1, 1949] No. 14748/49. Class 111. [Also in Groups XII and XIII] In a process for the heat treatment at a high temperature of sewage sludge which comprises passing the sludge to be treated through the inner tubes in series of two heat-exchangers each of which comprises runs of inner tubes surrounded by concentric outer tubes, cooling the heated sludge by water flowing in countercurrent in the second heat-exchanger and thereafter preheating the raw sludge by water flowing in countercurrent in the first heat-exchanger the sludge, after the pre-heating in the first heat-exchanger, is heat-treated in an independently heated apparatus and is then passed through the second heatexchanger. Cold raw sludge pumped in at c to a first heat-exchanger a is heated by water passing between an inner sludge pipe a<SP>1</SP> and an outer pipe a<SP>2</SP> and which has itself been heated in the annular spaces of a second heat-exchanger b. The sewage passes to a system of treatment tanks t<SP>1</SP>, t<SP>2</SP>, t<SP>3</SP>, which may be as described in Specification 539,622, and which are controlled by a multiple valve (not shown) so that one of the tanks is being filled while another is being emptied and the sludge is being retained quiescent in the third. The retained sludge is heated by steam passed from a pipe u to one of the inlets v<SP>1</SP>, v<SP>2</SP>, or v<SP>3</SP>. After treatment the sludge leaves by one of the outlets s<SP>1</SP>, s<SP>2</SP> or s<SP>3</SP> and gives up its heat to the water in the second heatexchanger b, finally passing to one or more decanting tanks w via a pressure control valve k. A plunger l in this valve is parted at n to allow the sludge under pressure to hold it up and at the same time escape from an outlet o. A similar valve j is provided to maintain the pressure and prevent steam formation in the water system. between the first heat-exchanger and an open tank e from which water is withdrawn by a pump f. The valve j may be dispensed with and the tank e closed. Specification 653,984 also is referred to.
Patent GB-741469-A (GB)
Title: Improvements in folding tables
Inventor: WRIGHT EDMUND HARVEY
Filed: 1953-10-01
Abstract: 741,469. Folding tables. DESMO, Ltd. May 24, 1954 [Oct. 1, 1953], No. 14773/54. Divided out of 741,458. Class 52(3). A folding table has a pair of U-shaped leg members 4 pivoted to the metal frame 2 of the top panel 1 so as to be foldable towards one another and lie beneath the table top, the members being so shaped and disposed as to overlap and project beyond the edges of the top 1 to form carrying handles 14. Specification 741,458 is referred to.
Patent GB-1343466-A (GB)
Title: Automatic gain control circuit
IPC: H03G3/30
Filed: 1971-05-13
Abstract: 1343466 Automatic gain control in transistor circuits RCA CORPORATION 13 May 1971 [19 May 1970 20 May 1970] 14771/71 Addition to 1290091 Heading H3T The invention relates to a television receiver A.G.C. of the type disclosed in the Parent Specification in which gating pulses are applied from keying source 50, i.e. line. fly back pulses, to the base of a transistor 38. The collector of transistor 38 forms a variable shunt in a resistance network 42, 48, 44a, 44b which provides bias for gain-controlled stages of the receiver. The amplitude of the pulses at the collector of transistor 38 is controlled by a shunting transistor 34, the base bias of which is determined by negative-going synchronizing  pulses derived from the first video amplifier 20  over resistors 60, 62. The band-width of transistor 34 is restricted by means of a collector to base capacitor 56. The arrangement includes means for eliminating the effects of noise pulses comprising a differentiating network 88, 86: the positive-going spikes produced by the trailing edges of the noise pulses turn on an amplifier comprising transistors 74, 76, 78 so that the collector-emitter path of transistor 78 shunts the path from the keying pulse source 50 and so balances for the increased A.G.C. potential which noise pulses tend to produce. According to the present invention, the base of transistor 38 is given an additional D.C. bias by means of resistor 66 and Zener diode 64. The arrangement illustrated also includes a transistor 94, which is normally saturated, by is biased back by the A.G.C. when the control voltage reaches high levels. Transistor 94 then applies an additional positive bias to the base of transistor 38 via emitter-follower 96 and resistor 68, so that if strong signals are suddenly supplied to the receiver the A.G.C. is correspondingly rapidly enhanced.
Patent GB-636048-A (GB)
Title: Improvements in electrical measuring methods and apparatus
IPC: G01R27/18
Filed: 1947-06-04
Abstract: 636,048. Resistance measurements. ELECTRONIC & X-RAY APPLICATIONS, Ltd., TUNNICLIFFE, E. A. J., and WILKINS, S. R. June 4, 1947, No. 14786. [Class 37] A low resistance source B, Fig. 1, supplies current to a low resistance R across which is a voltmeter connected by low resistance leads L<1>, L<11>, and the unknown low resistance is connected to leads El, E<11> to vary the meter reading and thus indicate its value. Preferably LR is about half the unknown resistance. As shown in Fig. 2, the arrangement is modified for measurements over two ranges, switch SW connecting either LR<1> or LR<11>across the meter mv. The terminals E<1>, E<11> for connecting to the unknown resistance include a contact strip 11, Fig. 3a, and one has a contact 8, 9 actuated by a button 4 for completing the circuit of the resistance LR<1> or LR<11> and the battery B.
Patent GB-789934-A (GB)
Title: Improvements in or relating to devices for variable amplitude correction
IPC: H03F1/20
Filed: 1956-05-14
Abstract: 789,934. Television. PHILIPS ELECTRICAL INDUSTRIES, Ltd. May 14, 1956 [May 17, 1955], No. 14925/56. Class 40 (3). [Also in Group XL (c)] Variable amplitude correction of a signal is obtained by means of a delay line which is open at one end and correctly terminated at the other end, the signal to be corrected being supplied with opposite polarity to the open end and the terminated end, an output signal being derived from the terminated end of the line. The circuit may be used for correcting aperture distortion of a television signal. The signal to be corrected is applied at E to the grid of tube B1 and thus to the open end of delay line KL so that a signal of the same polarity is produced at the terminated end of the delay line after a delay equal to t which is the one way characteristic delay of the line. The signal appearing across the cathode resistor R of tube B1 is fed via circuit R3, R2 to the cathode of tube B2 so that a signal of the same polarity as the input signal at E is produced at the anode of tube B2. This signal is fed into the delay line KL reflected with the same polarity at the open-circuited end and appears at the correctly terminated end of the delay line with the same polarity as the input signal but delayed by time 2t. The amplitude of the signal fed back from tube B1 to tube B2 may be adjusted by variation of the resistor R3, thus adjusting the amount of amplitude correction. Alternatively resistor R3 may be dispensed with and the cathode resistors R1 and R2 may be made in the form of potentiometers, the tappings of which are connected together. The product of the mutual conductance and the cathode resistance of the two discharge tubes B1, B2 is equal in magnitude.
Patent GB-669925-A (GB)
Title: Improvements relating to power transmission mechanisms
Inventor: BAINES JOHN ARCHIBALD
IPC: F16H57/10
Filed: 1949-06-03
Abstract: 669,925. Toothed gearing. ROTAX, Ltd. May 19, 1950 [June 3, 1949], No. 14929/49. Class 80 (i). In an actuator mechanism, e.g. for aircraft, an electric motor a drives a shaft f through epicyclic gearing comprising a sun g, a reaction annulus c and a driven carrier e. The annulus is freely rotatable and is provided with external teeth i engageable by either one of a pair of oppositely-acting spring-retracted pawls i (Fig. 2) pivoted to the housing k. Upon energisation of the motor a one or other (depending on the direction of rotation) of a pair of solenoids n is operated to move the corresponding pawl j into engagement with the teeth i. Should the motor fail, the pawl mechanism allows the shaft f to be rotated by other means, such as another actuator connected thereto.
Patent GB-259917-A (GB)
Title: Improvements in and relating to therapeutic lamps
IPC: A61N5/06
Filed: 1926-06-14
Abstract: 259,917. Burdick Corporation (formerly Burdick Cabinet Co.), (Assignees of Anderson, F. A.). Oct. 19, 1925, [Convention date]. Electric radiators.-A therapeutic lamp, adapted particularly for the production of red and infra-red rays comprises a pair of rigid radiating elements 47, 48, mounted in a parabolic reflector A connected through a housing 13 for an insulating mounting block 17 with a handle or support C. The elements 47, 48 are of part annular section and are held between clips on bent strip conductors 32, 33 and a suitably recessed washer 45 contained within a nut 44 screwed on to a central fixed post 42; the elements may be of carbon, or a mixture of carbon and carborundum. The conductors 32, 33 are formed of a nickel-copper alloy and the clips holding the elements 47, 48 of a chromium steel alloy. Good contact between the elements 47, 48 and their supports may be obtained by coating the ends of the elements with aluminium. The conductors 32, 33 are secured to a two-part insulating block 30, 31, which also carries the post 42, by bolts 34, 35, the bolt 34 extending through the block and being connected to a screw threaded metal cap 38 which engages a screw socket 18, whereas the bolt 35 is connected with a conducting block 36 mounted in recesses in the parts 30, 31, the block 36 being connected to a central stud 37 engaging an insulated contact in the socket 18. The electric connections are made through the mounting block 17, which may also comprise a switch-block, to a flex 23 passing through the handle C. The block 17 may be surrounded by a fibre sleeve 20. The housing 13 is formed with a flanged portion 13<1> secured to a shoulder 12 on the reflector A by screws 14. The skirt of the flange 13<1> and the cylindrical portions 11 of the reflector A are formed with ventilated openings 16, 15. The handle C is screw into a socket 25 secured to the housing 13 by the engagement of an internal flange, on an octagonal aperture 24 in the housing, with an octagonal recess in the socket, the upper end of the socket being riveted over a packing member on the flange.
Patent GB-1212605-A (GB)
Title: Continuous production of isobutylidene diurea
IPC: C07C275/06
Filed: 1968-03-29
Abstract: 1,212,605. Isobutylidene diurea. BADISCHE ANILIN- & SODA-FABRIK A.G. 29 March, 1968 [30 March, 1967], No. 15102/68. Heading C2C. Isobutylidene diurea i.e. is produced by a continuous process which comprises mixing an at least 50% by weight aqueous urea solution, isobutyraldehyde and an aqueous solution of acid, such as a strong to medium strength acid, particularly a mineral acid, by means of one or more nozzles, the mixture being supplied to a reaction chamber so that the reaction may continue and the wholly or substantially reacted mixture is withdrawn' from the reaction chamber at a rate commensurate with the rate of feed. The reaction chamber may be provided with a jacket which is capable of being heated or cooled. The process is preferably carried out at a temperature between 40‹ and 90‹ C. The product can be processed with other plant nutrients into multinutrient or complete fertilizers in a simple manner without the need for water to be added.
Patent GB-594436-A (GB)
Title: Method of finishing plastic filaments in brushes
IPC: A46D1/00
Filed: 1945-06-14
Abstract: 594,436. Brushes. LEVER BROS. & UNILEVER, Ltd. (Pepsodent Co.). June 14, 1945, No. 15154. [Class 19] A method of finishing and shaping the ends of thermoplastic bristles in brushes, especially tooth-brushes, comprises applying heat to the free ends of the bristles to melt the same, allowing the melted ends to solidify and pulling away the melted portions when solidified. Suitably, the bristle ends are brought into contact with a heated plate whereby molten globules, which may coalesce, form on the bristle ends, Fig. 3, and may be pulled off when 'solidified by combining, picking or brushing. The bristle ends may be given any desired contour by use of a suitably-shaped plate as shown, for example, in Figs. 1 and 12 ; the surface of the plate may be stippled or minutely irregular, thereby resulting in bristle tips containing depressions facilitating retention of tooth paste, as shown in Fig. 9. The desired contour may be produced by contacting the bristle end with a heated plate in a single operation, by step-wise contact with two or more contoured plates, by moving the bristles over the heated plate while in contact therewith or by successive application of a suitably small heated plate to different portions of the brush at varying angles. The method is preferably employed in finishing brushes containing nylon filaments and, if desired, the bristles may be trimmed to approximately the desired length and contour prior to the application of heat. Specification 550,229 is referred to.
Patent GB-1383722-A (GB)
Title: Tubular grafts having indicia thereon
IPC: A61F2/06
Filed: 1973-03-29
Abstract: 1383722 Prosthetic tubes MEADOX MEDICALS Inc 29 March 1973 [28 July 1972] 15173/73 Heading A5R A graft comprises an elongated tubular body 10 made of a flexible material and having at its exterior at least one longitudinally extending line visibly distinct from the remainder of the body for accurately orientating the body angularly with respect to its axis. The graft may be warp knit the line or lines being produced by incorporating a thread or threads of different colour from the remainder of the body. The line(s) may be marked on the body using e.g. a marking pen. The graft may be circular knit, and may be a vascular graft with two branches 14a, 14b.
Patent GB-510986-A (GB)
Title: Improvements relating to possers
IPC: D06F15/00
Filed: 1938-05-21
Abstract: 510,986. Making possers. WADES (METAL SPINNERS), Ltd., and WADE, W. K. May 21, 1938, No. 15198. [Classes 83 (ii) and 83 (iv)] [Also in Group VIII] Jointing by stamping.-The conical member B of a posser is connected to the socket C, intended for receiving a wooden handle, by means of a bead or inverted gutter D pressed or spun out of the sheet metal of the part B to form a recess F in which is placed the lower outwardly flanged end E of the socket, the bead then being pressed or spun inwardly over the flange E. In the event of the posser being constructed without the inner conical member, the top of the outer cone A would be joined in a similar manner to the lower end of the socket.