baber/WOPTO huggingface dataset:
Patent GB-403708-A (GB)
Title: Improvements in or relating to the de-oxidation of phenolic compounds
IPC: C07C15/02
Filed: 1932-05-26
Abstract: Vanadium catalysts are used in the reduction of phenols at substantially atmospheric pressure and may be mounted upon supports such as active charcoal, silica gel or alumina gel.  The presence of a small amount of hydrogen sulphide in the reducing gas is stated to be advantageous.  The catalysts may be reactivated by heating in air to about 450 DEG  C.  Whilst the decrease in activity takes place more slowly if the catalyst be previously reduced in hydrogen.  The catalysts employed in the examples are prepared by (1) absorbing ammonium vanadate solution in active charcoal and drying, (2) heating ammonium vanadate in a stream of nitrogen and pelleting the resulting oxide.ALSO:Phenolic compounds have their hydroxy groups eliminated by p  treatment with a reducing gas at a pressure not substantially exceeding atmospheric in the presence of vanadium or a compound thereof as catalyst.  The reducing gas may comprise hydrogen, coal gas or water gas--or according to the Provisional Specification, hydrogen sulphide--and the gaseous mixture may be pre-heated.  The catalyst may be in the form of granules or mounted upon a support such as active charcoal, silica gel or alumina gel; its activity is improved by the presence of small quantities of hydrogen sulphide in the reducing gas and may be restored after prolonged use by heating in air to about 450 DEG  C.  The decrease in activity takes place more slowly if the catalyst be previously reduced in hydrogen. Temperatures of 250--550 DEG  C. are employed, preferably 450 DEG  C. Examples are given of the conversion of cresols into toluene using as catalyst (1) the product obtained by soaking active charcoal in ammonium vanadate solution and drying, (2) pellets of the oxide formed by heating ammonium vanadate in a stream of nitrogen. Similarly phenol may be reduced to benzene and xylenols to the corresponding xylenes.  The process may be effected under reduced pressure, even that of a few inches of water.
Patent GB-561676-A (GB)
Title: Improvements in or relating to calendars or date indicators
IPC: B42D5/04
Filed: 1942-10-26
Abstract: 561,676. Calendars. MANSELL, C. E. Oct. 26, 1942, No. 15010. [Class 106 (iv)] A calendar or dateindicator comprises one or a plurality of superposed sheets a, folded in half and formed with an elongated slot at the fold, the folded sheet or sheets being suspended solely from a separate tongue or hanger e extending through the slot or slots. Each sheet is printed with one or more months, one each half, front and back. The calendar shown has three. sheets. The hanger may be modified as shown in Fig. 5, or may comprise a strip of suitable material, placed under the folded sheets with a loop extending through the slots.
Patent GB-593324-A (GB)
Title: Radial drilling machine
IPC: B23B39/12
Filed: 1945-06-14
Abstract: 593,324. Drilling-machines. WEISS, A. June 14, 1945, No. 15069. [Class 83 (iii)] In a radial arm drilling-machine with an outboard support column that can be fixed to the machine base in various radial positions, the vertical plane x-x<1> through the points of application of the effort for raising and lowering the arm passes through the centre of gravity of the arm and drilling-head and also the vertical plane b-b through the centres of the two columns passes through the line a-a joining the points at which drilling pressure may be applied. The arm 1 may be raised and lowered on the main column 4 and support column 5 by cables or chains or, as described, by an electric motor which, through a gear 15. rotates a nut mounted in bearings adjacent to the main column and, through the gears 12 on the shaft 14, rotates another nut adjacent to the support column, both nuts engaging stationary threaded shafts 6.
Patent GB-928511-A (GB)
Title: Improvements in and relating to electric switches
Inventor: SMITH KENNETH GRAHAM
IPC: H01H15/06
Filed: 1958-05-12
Abstract: 928,511. Retractive switches. N.S.F. Ltd. Aug. 12, 1959 [May 12, 1958; April 29, 1959], Nos. 15136/58 and 14611/59. Class 38 (5). An electric switch comprises a contact carrier reciprocated in sliding engagement with a surface of the switch housing, the carrier being ribbed where it engages the said housing. In an embodiment shown in Figs. 1 and 2 of the first Provisional Specification, operation of a pivoted trigger 1 raises an operating bar 3 to move a coil spring 6 through its dead-centre, the spring being mounted between a dished plate 5 on the bar 3 and a projection 8 on a contact carrier 9, and being retained in position by a W-shaped stirrup 7 pivoted to a frame portion la. Movement of the trigger 1 thus moves contact-carrier 9 with a snap-action to bridge one or other of two contact pairs 112, 113. The fixed contacts are chamfered at their leading edges, and the recess in which each is mounted has a bevelled leading edge, to minimize tracking. The contact-carrier 9 comprises a relatively thin plate, e.g. of nylon strengthened by webs 117 separated by a transverse web 118, each web having raised ribs 119 on which the carrier slides, to reduce friction. U-shaped spring-blade contacts 110, 111 are fitted in the spaces between the ribs and have curved ends so that the initial point of arcing-contact is not the point of contact in the fully operated position. The switch casing is in two parts 114, 115, the former having anti-tracking baffles. In a modification (Fig. 3 of the second Provisional Specification), the curved portions of the contact blades 23, 24 have ribs (not shown) in order to reduce contact wear. The contact blades are fitted between webs 22b and 22c, as before, but are further retained between side webs 22e or 22f so that when the carrier 22 slides the contact blades 23, 24 do not touch the side of the casing. The portion of the casing containing the contacts may be made of phenolic resin and the other portion of a more highly insulating material, the portions being strapped together with a metallic band.
Patent GB-1298847-A (GB)
Title: Office printing machine
IPC: B41L19/00
Filed: 1970-03-31
Abstract: 1298847 Printing apparatus FORTUNAWERKE MASCHINENFABRIK AG 31 March 1970 [31 March 1969] 15136/70 Heading B6C A printing machine comprises a printing cylinder 100, a forme roller 60 which can apply ink, or both ink and dampening fluid, to the cylinder and a further roller 40 which supplies either ink or dampening fluid to the forme roller, the forme roller being mounted on a pivoted frame and movable into and out of contact with the cylinder. The axis about which the frame is pivoted and the axis of rotation of the further roller 40 are coplanar, and the plane in which they lie intersects the surface described by the moving axis 61 of the forme roller at a point between its extreme positions. Preferably the intersection is midway between the contacting position of the forme roller and a tripped position in which it can be retained out of contact with the printing cylinder. The printing machine may be an offset lithographic printing machine, in which the cylinder 100 can be tripped out of contact with a blanket cylinder 120 by a swinging movement. Dampening fluid and ink are supplied to the forme roller 60 by separate roller trains, that for dampening fluid ending in the roller 40. The inking roller train comprises an ink duct formed between two rollers 320, 310, a messenger roller 350 and two trippable rollers 50, 55 mounted in the same frame as the forme roller 60.
Patent GB-787276-A (GB)
Title: Improvements in or relating to the handling of moulding boxes on foundry mould-making machines
IPC: B22D33/02
Filed: 1955-05-25
Abstract: 787,276. Load-handling machines. HICKMAN, G. May 25, 1956 [May 25, 1955], No. 15156/55. Class 78 (3). [Also in Group XXII] Apparatus for handling moulding boxes on foundry moulding machines comprises an arm 3 pivotally mounted about a vertical axis 1 adjacent the mould table, and a pair of opposed jaw formations 7, 8 mounted on the arm for rotation about a common horizontal axis and engageable with the lugs 9 on a moulding box 4, whereby when the arm is swung over a loaded machine table a moulding box can be picked up by the arm, swung aside and inverted. The jaws are mounted in trunnions 5, 6 and are locked to the box by pins 11. The post 1 may be an hydraulic ram.
Patent GB-871598-A (GB)
Title: Apparatus for forming grooves in sheets of thermoplastic artificial materials
Inventor: ROTTNER EMIL
IPC: B26F3/12
Filed: 1958-05-12
Abstract: 871,598. Moulding thermoplastic sheet materials. FARBWERKE HOECHST A.G. May 12, 1958, No. 15177/58. Class 87(2). [Also in Group XI] A tube or other hollow article is formed by pressing a sheet of thermoplastic material on to electrically heated, spring-tensioned wires 1 over a table 5 of insulating material, the distance between the wires and the table being such that the wires form grooves in the sheet, and then folding the sheet by hand or by forcing into or over a former. To make a closed article the ends of the sheet are heated by adjustable bars 6. A heating band 7 is provided for welding the final seam in an article.
Patent GB-1237864-A (GB)
Title: Examination of specimens of ferromagnetic materials
Inventor: BIRCHON DONALD
IPC: G01N27/82
Filed: 1967-08-22
Abstract: 1,237,864. Magnetographic recording. NATIONAL RESEARCH DEVELOPMENT CORP. Aug.14, 1968 [Aug.22, 1967; March 29, 1968], Nos.38517/67 and 15191/68. Heading G1N. A method of magnetographic flaw testing comprises applying a recording medium to the specimen while it is magnetized and subsequently treating the recording medium to produce a visible record of the pattern of magnetization. A grooved specimen 1 may be rubbed with soap (to facilitate stripping) and covered with a layer 3 of "magnetic sensing paint" followed by a backing 4 of tough vinyl paint, or conventional adhesive tape. The specimen is magnetized in any convenient manner and the recording sheet removed, flattened, and treated with magnetic ink which is fixed by lacquer. Alternatively the magnetic ink may be applied to the backing layer 4 while it is on the specimen. In another embodiment Fig. 3, portable apparatus for testing e.g. a railway track comprises an electromagnet 8 with a resilient pad 13 mounted between the poles carrying the recording sheet 14. (This sheet may be formed by painting a sheet of glass and stripping when dry). The electromagnet is energized by a pulse from a capacitor mounted in the handle together with charging batteries. The recording sheet is then inked and pressed on absorbent paper to produce a permanent record, after which the magnetic record may be erased leaving the apparatus ready for further use.
Patent GB-529123-A (GB)
Title: Improvements relating to metal vapour electric discharge lamps
IPC: H05B41/06
Filed: 1939-05-22
Abstract: 529,123. Supply systems for discharge lamps. SIEMENS ELECTRIC LAMPS & SUPPLIES, Ltd., and ALDINGTON, J. N. May 22, 1939, No. 15194. [Class 38 (iv)] [Also in Group XL] The starting of a metal vapour electric discharge lamp ' is effected by connecting the refractory wire electrodes 7 in series with an auxiliary discharge lamp 12 or condenser 13 through one or two thermal switches 8 ; a choke coil is in the supply circuit. The break down voltage of the lamp 12 is lower than the running voltage of the main gap and this lamp 12 may be used on a d.c. or a.c. supply; the condenser 13 forms with the choke 11 a resonant circuit. The electrodes 7 have a thermionic coating or surround such material. The resistance of the earth electrode is such that when the lamp is first switched on-the thermal switches being closed-the electrodes 7 incandesce and a local discharge takes place across the ends X, Y, of the electrodes to ionize the filling; when the switches 8 open due to heating from the electrodes, the surge from the choke 11 breaks down the main gap, which during running short circuits the auxiliary lamp, should the thermal switches close If the lamp should go out while switched on it is not necessary for the lamp to cool down before restarting, as the local ionizations at the electrodes 7 allows ready restarting. The filling may be mercury at less than one atmosphere preferably between -5-10mm. and neon and/or argon. Each thermal switch consists of two bimetallic, contact carrying strips one nearer the electrode than the other. A layer of luminescent material may be applied to the envelope.
Patent GB-746723-A (GB)
Title: Improvements in retractable ball-pointed pens
IPC: B43K7/02
Filed: 1954-05-24
Abstract: 746,723. Reservoir pens. UNIVERSAL FOUNTAIN PEN & PENCIL CO., Inc. May 24, 1954 [Feb. 9, 1954], No. 15225/54. Class 146(3) After the writing unit of a ball-point retractable pen is projected from the casing 8 into writing position, a cylinder 15 is then depressed to slide over the open end of the reservoir 1 and compress the air within the reservoir and thus initiate the flow of ink to the writing ball 3. The cylinder 15 is closed at the upper end, and the lower open end is deformed at 16 to engage over a shoulder on the enlarged end 6 of the reservoir 1. A rubber washer 17, having air-tight engagement with the walls of the cylinder 15, and a brass washer 19, are urged against the end 6 of the reservoir by a coil spring 21, and, in the position shown, the reservoir is in communication with the atmosphere through holes in the end 6 and the washers 17, 19 and a hole 22 in the cylinder 15 just above the washer 19. The writing unit is urged inwardly of the casing 8 by a coil spring 12 which is weaker than the spring 21. A hollow plunger 24 passing through a bush 23 has an enlargement 25 engaging the end of the cylinder 15, and houses the bend of a U-shaped leaf spring 27. The arms of the spring 27 pass through slots to overlie the cylinder 15, and ON one arm is a block 29 on which is a latch pin 30 engaging a slot 31 in the casing 8. On depression of the plunger 24, only the spring 12 is compressed and the writing unit is projected until a shoulder 5 thereon engages a shoulder 11 near the end of the casing. On further depression of the plunger 24, the cylinder 15 slides downwardly over the reservoir to close the vent hole 22 and thus force air into the reservoir; this downward movement is continued until the pin 30 and block 29 reach an enlargement of the slot 31 and spring outwardly into latching position to engage and flex outwardly the end of a pocket clip 33. The writing unit is released by lateral depression of the pocket clip, and retracted by the spring 12.
Patent GB-756891-A (GB)
Title: Improvements in or relating to display devices, showcards, signs and the like
Inventor: LINDSEY GEORGE
IPC: G09F1/00
Filed: 1954-05-24
Abstract: 756,891. Signs. ACME SHOWCARD & SIGN CO., Ltd. May 24, 1955 [May 24, 1954], No. 15231/54. Class 3(2) A display sign or showcard comprises a cardboard member 10, 11, 12 which is shaped as shown and is secured to a cardboard member 17 having wings 16, a base 19 and a back 21. The panel 10 carries a legend incorporating or surrounded by a bright reflecting surface whilst the member 11 is provided with at least one strip 23 or 24 of luminescent material of one or more colours.
Patent GB-416971-A (GB)
Title: Improvements in and relating to elastic fluid turbines
IPC: F01D5/02
Filed: 1934-05-22
Abstract: 416,971. Securing turbine discs on shafts. BRITISH THOMSON-HOUSTON CO., Ltd., Crown House, Aldwych, London. May 22, 1934, No. 15272. Convention date, May 26,1933. [Class 80 (ii).] A high-speed turbine disc is formed by a radially outer part and an inner part which is recessed to receive a projection on the inner portion of the outer part, there being a radial clearance between the shoulder of the projection and the wall of the recess so that the radially outer part must be under a centrifugal stress sufficient to bring the shoulder into contact with the wall before the inner part takes up any of the stress. An outer disc 32 is formed at its inner portion with annular projections 35, 36 to enter annular recesses 33, 34 on the inside faces of two discs 30, 31 which have a sliding fit on the shaft, radial clearances being provided at 39, 40, between the shoulders of the projections and the walls of the recesses. Pins 43-45 extending from a sleeve 42 shrunk on the shaft maintain the discs concentric with the shaft and transmit the drive. Axial bolts or rivets having similar clearances with the holes in the radially outer disc may connect the two inner discs.
Patent GB-277426-A (GB)
Title: Improvements in radio signalling systems
IPC: H04B7/12
Filed: 1926-06-17
Abstract: 277,426. Standard Telephones & Cables, Ltd., (Western Electric Co., Inc.). June 17, 1926. Fading, preventing; thermionic valve circuits. -The effect of fading in wireless transmission is minimized by transmitting the signal continuously and simultaneously on a plurality of wavelengths. The waves are received on separate directive aerials and detected independently, and the resulting signals are, combined in cumulative manner in a common signal indicator. The system is particularly applicable with short waves, and the difference in frequency between the several waves mav be small. The modulation applied to the several waves is displaced in phase, thus tending to even up the amplitude of the combined wave and enabling the main transmitting amplifier to operate economically. Figs 1 and 2 show respectively a transmitting and receiving arrangement using two waves. The signal currents in the circuit 3 are applied in phase opposition to the grids of a push-ball pair of valves 6. A centre-tapped choke 7 is connected between the plates, and the voltages across the respective halves of the choke are applied in the plate circuits of the valves 2. These valves are fed from oscillatory sources 1 of different frequency, and their output thus modulated by signal currents of opposite phase. The combined output is amplified at 9 and is fed into an aerial 10 which is made resonant to both frequencies, for example by the closed circuits 12, 13 tuned approximately to the respective frequencies. Separate aerials may be used, or a single aerial broadly tuned. At the receiving station, Fig. 2, directional receivers, such as split-loops 20<1>, 20<11> are tuned to their respective frequencies, and are connected to separate detectors 21<1>, 21<11>. Locallyproduced oscillations are supplied to the detectors 211. 21<11> from the same or separate sources 23<1>, 23<11>, and the detectors are connected to the input of the same or separate intermediate amplifiers 24. The intermediate frequencies are selected by tuned circuits 29, 30 and applied to detectors 25, 26. The detected telephone currents are combined in the circuit 31, the transformers 32, 33 being oppositely connected so that the signal currents add to each other in the telephones. Reception may be by simple detectors, instead of by the supersonic heterodyne method. The phase opposition of the signal currents, as applied to the two transmitters, evens up the amplitude of the combined wave, and enables the common power amplifier 9 to operate economically. When more than two waves are employed, one phase of the signals applied to half the waves, and the other phase to the other half. Specification 168,056 is referred to.
Patent GB-673730-A (GB)
Title: Improvements in and relating to ice cream machinery and the like
IPC: A23G9/28
Filed: 1949-07-12
Abstract: 673,730. Slicing machine. ROLFE, A. F. B. June 20, 1950 [July 12, 1949], No. 15383/50. Divided out of and addition to 673,687. Class 28 (ii). [Also in Group V] In cutting slices off an ice cream block which is pushed along step-by-step to a reciprocated guillotine cutter as in the parent specification, the step-by-step feed is derived from the reciprocated cutter 2 to which is coupled a slotted lever 8 to rock a layshaft 7 whereby a ball 13 slides a plunger 16 with lost motion so that a connecting rod 17 rocks the lever 18 of a one-way coupling 20 (e.g. a ratchet) of a sprocket 21A to give step-by-step motion to the conveyer chain 22 and the pusher 23 engaged therewith. Just before the pusher 23 reaches its extreme left hand position the operator pushes it back to initial position carrying with it the upper run of the conveyer chain 22. This reversing of the chain 22 is made possible by the one way coupling 20 or alternatively by two separate free wheels 30 for the sprockets 21A. If the pusher 23 is not so returned by hand and it comes against a stationary part of the machine the feed of the conveyer chain is stopped by a release coupling 31 (subh as a friction clutch). The ice cream block being cut by the guillotine 4 is prevented from sticking to the guillotine blade by a fixed hold down 27 adjustable for height by a screw 28. The slice thickness is determined by adjusting the amount of rocking of the lever 18 which rotates the chain sprockets 21A through the one way coupling 20, such adjustment being made by nuts 18" altering the position of the sleeve 18' along the lever 18. The sleeve 18' is oscillated from the rocking shaft 7, lever 11, plunger 16 and connecting rod 17. The guillotine blade 4 may be made extra wide with transverse auxiliary blades 4' to cut several slabs at once from an extra wide block.
Patent GB-774337-A (GB)
Title: Improvements relating to the control of electric heaters
Inventor: STUMPF HEINZ
IPC: F24C15/10
Filed: 1955-05-27
Abstract: 774,337. Switching systems for consuming devices. BUSCH-JAEGER DURENER METALLWERKE AKT.-GES. May 27, 1955, No. 15430/55. Class 38 (4). An electric hot-plate control circuit comprises heater elements R1, R2, R3, and a double-pole cam-operated switch having contacts a-d co-operating with contacts associated with element terminals 1-4. Sparking at the contacts c and e may, if the switch is operated rapidly, cause short-circuiting. To prevent this, the circuit is made and broken at those of the contacts, a, b, d, which are connected in circuit with the contacts c or e at any time. The cams are thus arranged so that contacts a, b, d are opened before the contacts c, e, and are closed after them.
Patent GB-1181214-A (GB)
Title: Photographic Machines
Inventor: CLARK CHARLES WILLIAM
IPC: G03B27/30
Filed: 1966-04-07
Abstract: 1,181,214. Photographic apparatus. C.W. CLARK. April 6, 1967 [April 7, 1966], No. 15598/66. Heading G2A. Photographic apparatus of the kind comprising means for exposing a sensitized sheet to provide one or more latent'images thereon and conveying apparatus for then conveying the sheet automatically to development and fixing apparatus is further provided with mashing apparatus and flash producing apparatus associated with the conveying apparatus for exposing a border around the or each image so as to give a white border to the developed sheet. Depending on whether one or several images are initially selected, a microswitch 43 or a micro-switch 56 is arranged to be closed by the leading end of an exposed sheet as it is conveyed past masking apparatus 31 or 32, so as to fire a flash-lamp in the appropriate container. The container 31 has a translucent side 35 with a stainless steel masking sheet 36 embedded therein, while the masking sheet of the container 32 is in four parts. An opaque plate 37 and a light baffle 40 are provided to prevent fogging.
Patent GB-415363-A (GB)
Title: Improvements in apparatus for facilitating stripping paper, paint or the like from walls, ceilings or other surfaces
IPC: B44D3/16
Filed: 1934-05-25
Abstract: 415,363. Cleaning walls &c. SANDERSON & SONS, Ltd., A., and LEE, E. C., 52, Berners Street, London. May 25, 1934, No. 15656. [Class 138 (i).] Apparatus for removing paper, paint, &c. from walls, ceilings, or other surfaces, comprising a horizontal boiler 4 for supplying steam to spray the walls, &c., a blow-lamp 5 and a vessel 7 containing fuel for the lamp, is characterized in that a pressure gauge 36 and a relief valve 37 are mounted on a fitment 35 secured to the vessel 7, and a strainer 33 is provided on the lower end of the fuel pipe 30<a>, the portion of which leading to a needle valve 32 is free from joints. Pressure in the vessel 7 is provided by an air pump 25. The boiler supplies steam to a pipe 10 which is adapted to be connected by a hose to a concentrator for directing the steam against the surface under treatment.