baber/WOPTO huggingface dataset:
Patent GB-638405-A (GB)
Title: Improvements in and relating to advertising or display devices
IPC: F21V8/00
Filed: 1948-04-26
Abstract: 638,405. Lighting systems. SCADENG, G. W., and WILLMOTT, E. April 26, 1948, No. 20778. Divided out of 638,404. [Classes 75 (ii) and 75 (iv)] [Also in Group XVIII] An advertising or display device comprises a casing containing a light source and a stand for an article being displayed, wherein either the article is illuminated by light conveyed from inside the casing by transparent plastic rods or the stand itself is made of transparent plastic material and presents its lower end to the light source so that light is conveyed upwards by total internal reflection inside the stand to the article. A display stand 18 comprising two frusto pyramids of multi-coloured transparent plastic material united at the apices is mounted in an aperture in a casing 10 containing a lamp 12..Light is transmitted upwards through the stand and is emitted by its upper frosted surface so as to illuminate from below an article 17 on the stand. The article is also illuminated from above by light emitted from the down-turned frosted ends of two transparent plastic rods 20 which pass through sealed openings in the casing and present their other ends to the lamp. Light may be concentrated on the rod ends by a lens system 23. A bent sheet 14 of transparent plastic material projects from the casing and emits light from its frosted rear surface towards other display matter placed on the casing. A translucent panel 13 which may contain advertising matter is mounted for direct illumination on the front of the casing. A reflector 24 is arranged inside the casing to direct light on to the edge of the sheet 14, or the panel 13, or the ends of the plastic rods or the base of the stand. In a modification a display article is illuminated only from below by its stand and the plastic rods are used to convey light to a further display article remote from the casing.
Patent GB-1430562-A (GB)
Title: Quinazoline derivatives and processes for their preparation
IPC: A61P31/04
Filed: 1974-05-10
Abstract: 1430562 2 - (1,3 - Diaza - 2 - cycloalken - 2- ylamino)quinazolines UPJOHN CO 10 May 1974 [17 May 1973] 20836/74 Heading C2C Novel compounds of the Formula I where X and Y are each hydrogen, halogen, alkyl or alkoxy; R is alkyl and n is 0 or 1 where alkyl groups have 1 to 6 carbon atoms and acid addition salts thereof may be prepared by reacting a compound of the Formula II with ethylene diamine or propylene diamine in the presence of a catalytic amount of a strong acid and at least 0À01 equivalent of a thiol compound per equivalent of compound (II). The intermediates of the Formula II are prepared by reacting an X,Y substituted 2-alkanoyl aniline with sodium dicyandiamide. The various aniline derivatives may be prepared by reduction of the corresponding nitro benzene. Therapeuitc compositions of the compounds I with the usual excipients show in vitro antivirial activity.
Patent GB-238885-A (GB)
Title: Improvements in or relating to darning devices
IPC: D04B17/00
Filed: 1925-08-19
Abstract: 238885 Daugart (nee Kroll) F 20 Aug 1924 [Convention date] Darning.-Sheds of warp thread through which weft threads are passed by means of a needle are formed by a device in the form of a triangular prism having alternate deep and shallow grooves h, i in two of its edges each deep groove in one edge extending to a corresponding shallow groove in the other edge. The warp threads j, j<SP>1</SP> are caused to lie in these grooves and by turning the appliance from side to side are raised and lowered alternately in two sets or sheds a threaded needle being passed between these and along longitudinal grooves o in the appliance after every turn. The appliance may be made of bent sheet metal as shown in Fig. 7.
Patent GB-183858-A (GB)
Title: Improvements in combined washing and sorting apparatus
IPC: B03B5/62
Filed: 1922-07-31
Abstract: 183,858. CoppÚe et Cie, E., (Assignees of Hodeige, E.). Aug. 1, 1921, [Convention date]. Inclined - trough wet-separating apparatus; upwardcurrent classifiers. - Apparatus for sorting coal or minerals according to specific gravity comprises an inclined trough with its bottom in the form of longitudinal grooves. The latter offer additional resistance and reduce the velocity of the bottom of the stream carrying the heavier particles, whilst the lighter particles pass on more rapidly in the upper portion of the stream. The material to be separated, previously assorted according to volume, is fed with water at a constant velocity into a duct 1 which comprises an upper trough with a grooved bottom 2, and a lower trough 20 which is more pointed. The separation takes place in the grooves 2, the heavier material being removed through openings in their bottoms into a second series of grooves 4, up which passes a counter-current from a conduit 5. The heavier particles are finally discharged through the openings 9, whilst the lighter particles are carried forward and the separation repeated. In the modification shown in Fig. 7, the grooves are replaced by a rotating drum 14 provided with grooves, corresponding with the grooves 13, the materials meeting a counter current of water supplied from a duct 15, causing a further separation as before, controlled by varying the speeds of the water currents, or the speed of rotation of the drums.
Patent GB-127508-A (GB)
Title: Improvements in Petrol Lighters.
Inventor: SHORROCKS HERBERT
IPC: F23Q2/14
Filed: 1918-12-16
Abstract: 127,508. Schorrocks, H. Dec. 16, 1918. Pocket igniters, frictional. -A pyrophoric pocket igniter is provided, in addition to the ordinary packed reservoir, with a storage reservoir in the same casing, a single valve serving both for charging the storage reservoir or for allowing the fuel to pass from the storage reservoir to the packed reservoir. Fig. 2 shows a pocket igniter of the match type in which the pyrophoric material II is arranged on the outside of the casing A and a hardened steel striker G, together with absorbent material F, is arranged at the end of a stem normally screwed in the packed reservoir B. The storage reservoir C has a pipe or channel I closed by a screw valve J, so that, by completely removing the valve J, the reservoir C may be charged, and, by raising it from its seat, petrol may be supplied from the reservoir C to the reservoir B.
Patent GB-149199-A (GB)
Title: Improvements in and relating to a device for transmitting high-frequency energy to vacuum tubes
IPC: H04B1/22
Filed: 1920-07-12
Abstract: 149,199. Loewe, S. Oct. 19, 1918, [Convention date]. Void [Published under Sect. 91 of the Act]. Wireless telegraphy; thermionic relays.-A rejector circuit consisting of an inductance and a condenser is connected in the plate circuit of each of a series of thermionic valves. For heterodyne reception, local oscillations are produced in, and confined to, the last valve in the series. In the arrangement shown in Fig. 1, each of the rejector circuits 9, 10 and 13, 14 is tuned to the frequency being received, and a telephone 18 in parallel with a condenser 16 is in the plate circuit of the last valve, preferably with a suitable rectifier 17 interposed. It is stated that the device is so sensitive that tuning of the aerial is not necessary. If a closed-loop aerial is used, it may be connected with a similar rejector circuit. Each rejector circuit may contain a fixed and a variable condenser, the connexion to the grid being led off between the two. A preferred method of coupling the valves is shown in Fig. 4, in which an aperiodic valve 26 is connected between each rejector circuit 22, 23, 24 and the next amplifying- valve 32. The plate circuit of this valve 26 consists of a battery 27, the grid 28 and filament 29 of the amplifying-valve 32. In order to confine local oscillations to the last valve in the series, the connexion to the grid of the previous valve from the rejector circuit is branched off from a part of the inductance or condenser therein, or the connexions of the plate circuit to the inductance of the following rejector circuit are made variable. Damping resistances may also be introduced in the grid and plate circuits, or the interposition of an aperiodic valve as already described may be employed. The same result may be obtained by coupling the grid circuits as shown in Fig. 6. A capacitative coupling may be employed instead of the inductive one.
Patent GB-1043434-A (GB)
Title: Electrical control system for moveable car
Inventor: GINGRICH JOHN ALVIN
IPC: B66B1/16
Filed: 1964-05-21
Abstract: 1,043,434. Lift control systems. TURNBULL ELEVATOR Ltd. May 21, 1964, No. 20960/64. Heading B8L. A control system for e.g. a dumbwaiter has only one push-button at each landing door, and a telephone-dial-type despatching device in the car, co-operating with a rotary step-by-step selector switch to register the landing call or despatch instruction. The selector is returned to its initial position after the car has arrived at its destination. The Specification describes such a system, Figs. 1 ... 11 (not shown), for a dumbwaiter serving 20 landings, and having front and rear gates, with a telephone type dial in the car adjacent each gate. Features such as gong and light signals to indicate the arrival of a car, and " in use " lamps are provided at each floor; cancelling buttons in the car; and means to prevent the car answering another call while the doors are open.
Patent GB-300115-A (GB)
Title: Phonograph pick-up apparatus
IPC: H04R11/08
Filed: 1928-07-19
Abstract: 300,115. Federal Telegraph Co., (Assignees of Summers, H. A., and Sollie, S. A.). Nov. 5, 1927, [Convention date]. Gramophone pick-ups ; magnetic instruments.-In a gramophone pickup so designed that the parts are assembled on a base plate 1 arranged to lie in a plane parallel to the record during reproduction, the plate has an inclined plane surface 15 on which the pole-pieces 20, 21 are fitted, and the armature 17 is mounted in a plane passing through the longitudinal axis of the plate. The armature carrying the stylus 18, passes loosely through a coil 28 and has lateral extensions 17<a>, 17b formed on one side as a knifeedge for engaging a bearing surface 20<b> inset in the lower part of the pole-piece 20, and rounded on the other side for engaging the correspondingly shaped surface 21<a> of the pole-piece 21, a strip 23 of resilient material being interposed. The armature is clamped by a rubber strip 24 arranged between the prism-shaped head 22 and plates 25, 26 having inclined tongues such as 26<a>, the plates being adjustably mounted in slots such as 21d in the upper parts of the pole-pieces. The permanent magnet 9 is secured to the base by a member 10. The ends of the coil 28 are connected to terminals 33 on a terminal block 31, flexible leads from which extend through a hollow swivel arm to the usual amplifier.
Patent GB-655242-A (GB)
Title: Improvements in and relating to inlet and exhaust poppet valves of internal combustion engines
Inventor: OLIVER DONALD ARTHUR
IPC: F01L3/02
Filed: 1944-10-27
Abstract: 655,242. Valves. JESSOP & SONS, Ltd., W..Oct. 27, 1944, No. 20988. [Class 7(vi)] The heads and stems of poppet valves are respectively made of heat and scale resisting steel, and a ferrous alloy having a lower coefficient thermal expansion; the expansion of the whole valve is thus adjusted to agree with the expansion of the engine and the tappets can be set when the engine is cold. The steel used for the heads contains not less than 5 per cent chromium and may contain up to two of the following, nickel, titanium, vanadium, zirconium, niobium and tantalum, and preferably has the composition claimed in Specification 647,701, [Group II]. The alloy used for the stems is preferably a nickel iron alloy having about 36 per cent nickel together with iron and traces of manganese and carbon. The Provisional Specification describes the use of a steel known under the Registered Trade Mark " Invar " for the stem.
Patent GB-875982-A (GB)
Title: Electron optical image converter
IPC: H01J31/50
Filed: 1960-06-16
Abstract: 875,982. Image converter tubes. RAULAND CORPORATION. June 16, 1960 [June 16, 1959], No. 21149/60. Class 39(1). In a method of manufacturing an image converter tube which includes a pick-up screen 14 having a caesiated-antimony layer 14d, ail the components of the tube except for screen 14 are sealed into an envelope which is evacuated to a predetermined pressure, e.g. 5 X 10<SP>-5</SP> mm. of Hg. or less, and heated to a minimum temperature; e.g. 350‹C., substantially in excess of the sublimation temperature of antimony. Meanwhile, screen 14 is completed, except for its antimony layer, heated to a temperature greater than 100‹C., e.g. 340‹C., and introduced into an evacuated enclosure wherein an antimony layer is evaporated thereon. The screen 14 is then inserted in the tube envelope which is resealed and again evacuated and heated to a temperature, e.g. 240‹C., substantially less than the sublimation temperature of antimony and at a rate such that the pressure does not exceed a predetermined maximum, e.g. 2.5 X 10<SP>-6</SP> mm. of Hg., before finally caesiating the antimony layer. Preferably, the enclosure where the antimony layer is formed is filled with nitrogen before removal of screen 14. As shown, screen 14 comprises an aluminium support 14a, an X-ray sensitive phosphor, silver-activated zinc sulphide, embedded in silicon resin 14b, and a barrier layer 14c of aluminium oxide. Envelope portions 10. 12 are provided with metal flanges 13a, 13b sealed together by heliarc welding and constituting a terminal for copper or aluminium coating 19 which, together with electrode 16, focuses electrons from screen 14 on to aluminized luminescent layer 15.
Patent GB-1144171-A (GB)
Title: Improvements in railway track brake retarders
Inventor: BELLINGER RONALD
IPC: B61K7/08
Filed: 1965-05-19
Abstract: 1,144,171. Track brakes; fluid pressure brake. STRACHAN & HENSHAW Ltd. 12 Aug., 1966 [19 May, 1965], No. 21170/65. Headings F2E and F2F. In a railway track brake for use in railway marshalling yards, retarder bars 14 arranged parallel to the track are adapted to be urged together for braking by a variable pneumatic or hydraulically operated clamping means (4) arranged at intervals A, B, C and D respectively, power selecting control means being associated with each of the clamping means and sensitive to the position of a rail vehicle wheel along the track such that the pressure exerted by the track brake is greater at the rear of the wheel than at the front of the wheel according to the direction in which the vehicle is moving to prevent the tendency for the vehicle wheel to lift between the clamping members. Control switches 34, 36, 38 and 40 are positioned on the downline side of each of the stations A, B, C, D respectively and are adapted to be contacted by the flange 26 of the vehicle wheel 28 (Fig. 2). The control switches may be in the form of electromagnetic proximity switches which are energized when actuated by the presence of the metal tyre 28 in its magnetic field. The control switches 34, 36, 38 and 40 control the admission of compressed air to the pneumatic rams 20A, 20B, 20C and 20D. The block diagram shown in Fig. 3 shows an assembly for the four actuating cylinders 20A, 20B, 20C, 20D and fluid under pressure is supplied from an air compressor (not shown) which feeds a low pressure reservoir 52 through a reducing valve 56 and a high pressure reservoir 54. When a manually and/or track actuated solenoid-actuated spring-return control valve 64 is in its de-energized position, control valves 62A, 62B, 62C and 62D close the air pressure supply lines to the pneumatic rams 20A, 20B, 20C and 20D. When the solenoid valve 64 is energized, pressure from the low pressure reservoir 52 is supplied to each of the stations A, B, C and D and when the leading wheels of the wagon have passed the centre line of the first pneumatic ram 20A, the first control switch 34 is operated to initiate operation of a changeover air-operated valve 68A through magnetic relays connected in the pneumatic circuit of the control valve 62A such that pressure from the high pressure reservoir 54 is supplied to the ram 20A behind the vehicle wheel. Similarly, when the vehicle wheel passes the centre line of the second pair of cylinders 20B, the second control switch 36 is actuated to operate the changeover valve 68B and control valve 62B to supply the cylinders 20B at full pressure. The cylinders 20A are then returned to low pressure by the trailing pair of wheels of the true actual wagon seeking an entry between the retarder bars 14 to avoid them being lifted from the track. This sequence continues through the retarder such that the high pressure applied to the track brake follows behind each wheel as a following wave. A larger number of stations A-D may be provided.
Patent GB-294265-A (GB)
Title: Improvements in or relating to processes for the manufacture of hydrogen peroxide
IPC: C01B15/032
Filed: 1928-07-21
Abstract: 294,265. Askenasy, P. July 21, 1927, [Convention date]. Hydrogen peroxide.-In praparing hydrogen peroxide by the action of carbon dioxide under pressure on an aqueous suspension of barium peroxide, small quantities of hydrochloric acid or barium chloride are added to the reaction mixture. The addition of acids, or the barium salts of acids, forming soluble barium salts, which decompose on heating to form barium carbonate or oxide is referred to. Formic, acetic, propionic and nitric acids are suitable and sulphur or phosphorus acids and oxalic acid are unsuitable.
Patent GB-652375-A (GB)
Title: Improvements in and connected with reinforced concrete construction
IPC: E04B1/16
Filed: 1947-08-05
Abstract: 652,375. Rod couplings. GRASSI, F. A. Aug. 5, 1947, No. 21303. Convention date, Aug. 6, 1946. [Class 99(i)] [Also in Groups X and XXI] The Specification as open to inspection under Sect. 91 comprises an oppositely threaded sleeve 60 for connecting the bars 58, 59 of a concrete reinforcement (see Group X), and which is locked by tightening until a metal block 61 of suitable thickness is clamped between the bar ends. This subject-matter does not appear in the Specification as accepted.
Patent GB-300534-A (GB)
Title: Improvements in rotary pumps and engines
IPC: F01C1/352
Filed: 1927-08-12
Abstract: 300,534. Spina, E. Lanzerotti-. Aug. 12, 1927. Fixed-abutment type; movable-abutment type, plant; driving pumps; packing drums, vanes, abutments, and the like; back-pressure, reducing. -A rotary engine or pump with blades mounted on a shaft 6 to sweep the wall of a cylinder concentric therewith and projecting through a double walled eccentric drum which touches the cylinder utilizes the space within the drum, the space between the walls of the drum, and the space outside the drum as working spaces. In the forms shown in Figs. 1 and 2 the double walled drum 23 is provided with inclined webs 24 so that this section may act as a turbine or a turbine pump; two vanes 20, 21 are independently mounted on the central shaft and provided with end and side packing pieces 33, 34, the latter being pressed out by the centrifugal action on rollers 35 housed in inclined grooves in the vanes. Packing grooves 31 are formed on the bearing surfaces of the drum. The drum contacts with a recessed portion of the casing and to prevent back pressure arising from fluid drawn into the vane slots due to the withdrawal of the vanes thereinto during the passage over this recessed portion of the casing a groove 56 is cut in the casing. The modification shown in Fig. 3 comprises a diametral blade 37 which projects through slotted bearings 38 carried by segmental members 39 sliding in the double walled drum; the alternate approaching and receding movement of the segmental members is used to effect a working operation, the fluid being admitted and discharged through ports 63 in the drum ends which periodically register with fixed ports 61 in the cylinder. The different working spaces may be used for different pumped fluids or one may serve as a motor unit for driving. The device may be used as a brake by connecting the inlet and outlet through a cock variably throttled; as a shock absorber by providing a spring-pressed one-way valve between the inlet and outlet and a small leak or oppositely working one way valve so that the device moves readily in one direction but slowly in the other.
Patent GB-638924-A (GB)
Title: Improvements in or relating to front edge detector mechanism for use in sheet feeding apparatus
IPC: B65H7/08
Filed: 1947-08-05
Abstract: 638,924. Feeding sheets. BACKHOUSE, H. T. Aug. 5, 1947, No. 21312. [Class 100 (i)] In a sheet-feeding apparatus as described in Specification 609,772 in which sheet detectors are arranged close to the front lays and act to cause stopping of the machine or actuation of a signal if a sheet is not fed correctly, the feeler 26 is carried by a telescopic support 18 mounted in a pivoted and spring-controlled outer member 17 mounted in a bracket 1 transversely adjustable on a support 2. When the feeler 26 is lifted by a sheet moving to the stop 34 it releases a rocker 24 and permits rotation about a horizontal axis of an assembly which includes a shaft 22 mounted in a bearing 23, a square rod 20 slidable in a tube 19, and a member 11 mounted in a bearing 13 and fitted with a pin 12 which can engage a cam-and-stop member 10 on a rocking sensing arm 4. If the feeler is not operated before the stop 10 engages the pin 12, mechanism is operated to stop the machine or actuate a signal. If the feeler is operated, the pin 12 is released by rotation of the parts 22, 20, 19, 11 by a spiral spring 21, and the movement of the arm 4 is not restricted. On the return movement of the arm 4 the stop 10 rotates a lever 7, mounted in an extension of the tube 17, by engaging an adjustable screw 6, and a flat part of lever 7 engages the flat part of member 11 and rotates the shaft 22 and associated parts to the normal position shown in Fig. 1, and the rocker 24 holds the parts against the action of the spring 28 until it is again released by the action of the feeler. At the end of the clockwise motion of stop 10 it engages a roller 30 mounted on the tube 17 and depresses its rear end, and so raises its front end to move the feeler mechanism away from the feed board. Specification 638,970 also is referred to.
Patent GB-1005887-A (GB)
Title: Process for generating gases from monopropellants and apparatus therefor
Inventor: HENDERSON CHARLES BROOKE
IPC: F02K9/70
Filed: 1962-06-02
Abstract: A plastic extrudable monopropellant having sufficient cohesive strength to remain a formed shape comprises a finely divided, insoluble, solid oxidizer, in an amount sufficient to maintain active combustion of the monopropellant, in a continuous matrix of an oxidizable, substantially non-volatile, organic liquid fuel. A gelling agent may be incorporated.  Possible liquid fuels are hydrocarbons, esters, alcohols, ethers, aldehydes, amines, nitriles, phosphorus-containing compounds, sulphur-containing compounds and viscous liquid polymers.  Suitable oxidizers are inorganic salts such as sodium and lithium perchlorates and metal peroxides. Gelling agents include natural and synthetic polymers, cellulose esters, cellulose ethers, metal salts, casein, gum, gelatine and clays. Organic gelling agents are preferred.  Finely divided metal powders, such as Al, Mg, Zr, B, Be, Ti, Si may be incorporated as additional fuel.  In an example, the monopropellant comprises ammonium perchlorate, viscous polyisobutylene, dibutyl phthalate and copper chromite.  In another example, polyvinyl chloride was mixed with dibutyl sebacate and heated to form a gel, the gel was then cooled and loaded with ammonium perchlorate.  Specifications 972,723, 972,724 and 1,005,886 are referred to.