baber/WOPTO huggingface dataset:
Patent GB-712261-A (GB)
Title: Improvements in or relating to an earth auger
IPC: E21B10/44
Filed: 1951-12-10
Abstract: 712,261. Augers. PETERSEN, G. A. M. Dec. 10, 1951, No. 28859/51. Class 85. The pilot bit 2 of an auger has two groups of cutters 9, 9a, 9b that extend approximately tangentially to their arcs of travel and are radially and vertically offset with respect to one another. The cutting edges of the cutters of one group are staggered with respect to the cutting edges of the cutters of the other group, so that the paths of travel of the edges of one group are alternatively disposed with respect to the paths of travel of the other edges. The cutters are secured on projections 8 formed on plates 6 that are attached to the lower portions of the helical blades 3. 4 of the auger.
Patent GB-140992-A (GB)
Title: Improvements relating to flue blocks for buildings and the like
IPC: E04F17/02
Filed: 1919-11-20
Abstract: 140,992. Murray, J. Nov. 20, 1919. Flues.-A rectangular flue block a has a substantially central elongated flue duct b arranged parallel to its edges, with a longer duct c on one or both sides to insulate the flue duct from external conditions. Similar insulating passages may be provided at each end of the flue passage. The passage c may be closed at top and bottom of the block, and have small exterior outlets. Fig. 6 shows a block for connecting the flue b' to a stove &c. pipe. The insulating passage c may also be curved to form an inlet on the same face of the block as the flue, as shown in dotted lines. Figs. 8 and 10 show sections respectively of inlet and outlet blocks for use when the insulating passage c<3> is used for ventilation purposes, Fig. 9 being a section on the inclined line shown in Fig. 10. The blocks are made of practically the same thickness as a nine-inch brick wall, of which they form part.
Patent GB-663556-A (GB)
Title: New or improved means for guarding power presses and other machines
IPC: F16P3/14
Filed: 1948-11-08
Abstract: 663,556. Photo-electric machine guard. PRESS GUARDS, Ltd., and EVANS, F. A. Dec. 2, 1949 [Nov. 8, 1948], No. 28911/48. Class 40 (iii). Interruption of a screen of light in front of a machine tool when the machine is in operation by, for example, the operator's arm, causes a photo-cell to couple a moving part of the tool to the operating lever to stop the machine. As shown, a screen of light from a projector housing 19 passes in front of the operating space 18 of a hydraulic press to a number of photo-cells within a receiver 20. The projector may contain a strip light or a fluorescent tube or a series of lamps arranged in line. Alternatively the light from a single lamp may be reflected back and forward in front of the space 18 by prisms or mirrors, finally impinging on a single photo-cell. In operation, movement of lever 13 to the position shown causes the ram to descend, carrying with it a rod 32 which slides in a tube 29. If the light to the photocell is interrupted during this period a relay comes out and a solenoid 36 in a box 35 welded to the tube 29 is de-energized. This allows an eccentrically pivoted disc 39 attached to the solenoid armature to fall so as to jam between the descending rod 32 and tube 29 so that both then descend together. Tube 29 then acts through a slotted link to reset the starting lever 13. The Provisional Specification mentions that in a mechanical press the celloperated relay may cause disengagement of the clutch and application of a brake to the crankshaft and may operate in a similar fashion on the spindle of a milling machine, the light source and photo-cells may be situated vertically with regard to the working space.
Patent GB-363431-A (GB)
Title: Improvements in or relating to methods of and apparatus for perforating and verifying record cards for use in statistical or like machines
Filed: 1930-09-26
Abstract: 363,431. Punching statistical cards. SMITH, N. G., The. Forge, Stanley Hill Avenue, Amersl.am, Buckinghamshire, and THOMAS, A., 103, Headcorn Road, Thornton Heath, Surrey. Sept. 26, 1930, No. 28928. [Class 31 (ii).] Selective punching machines.-In an apparatus for punching and verifying statistical record cards, the data is recorded in a plurality of stages whereby an error in recording on one stage is indicated by the record being incomplete or of incorrect shape. As shown in Fig. 1 data is recorded by punches 4 in one stage, and in the second stage the data is again recorded wit the card in a slightly different position correctly recorded data resulting in overlapping perforations. A reciprocating stop plate 3 positions the card. between die plates 1, 2 to be punched by punches 4. Pivoted lugs 5 contact with the card in the position shown for the first punching operation. For the second operation a lever 12 is swung to rotate a shaft 9 carrying eccentric pins 10 engaging the lugs and they are displaced slightly in order that the cards may be arrested in a different position for the second punching operation. In a modification two semicircular holes are punched, correct data showing as a circular hole, or a circular hole is punched in one stage and a notch in the hole is punched in the second stage. In a further modification a printed ring is made in this first stage and a punched hole in the second. The invention may be applied to the production of cards with printed date read by reflected light. Specifications 321,952, 321,953, 328,255, 328,281, and 328,285, [all in Class 31 (ii), Punching and perforating machines &c.], are referred to.
Patent GB-619778-A (GB)
Title: Improvements in or relating to triggering devices using gas-discharge tubes
IPC: H01J17/48
Filed: 1946-09-27
Abstract: 619,778. Discharge apparatus. BOSCH, F. J. G. VAN DEN. Sept. 27, 1946, No. 28994. [Class 39 (i)] [Also in Group XL (c)] A triggering device comprises a thermionic valve having its control electrode connected to a source of controlling potential and its anode connected to an additional electrode in a gas-discharge tube having two main electrodes. The additional electrode is so disposed and shaped and has such a potential applied to it that when the anode current of the valve reaches a predetermined value the locality of the gas discharge shifts from one main electrode to the second, the resultant change of voltage at these electrodes being used for triggering purposes. The Figure shows a trigger circuit comprising a cold cathode gas-discharge tube 27 which has two main electrodes 28, 29 and a cylindrical additional electrode which is in two electrically connected portions 25, 26, the two portions being separated by a screening electrode consisting of an apertured plate 34. When the photocell 10 is non-conducting only a small current flows through the valve 13 and a glow discharge takes place across electrodes 25, 28. When the photocell 10 conducts the current in valve 13 increases, the zone of ionisation in the tube 27 spreads to a region near the main electrode 29, the potential of this electrode rising and rendering valve 33 conducting. The value of anode current of valve 13 at which the triggering action in the gas-discharge tube 27 takes place may be adjusted by potentiometer 35.
Patent GB-602641-A (GB)
Title: Improvements in or relating to grinding machine
IPC: B24B53/07
Filed: 1945-11-02
Abstract: 602,641. Trueing grinding-wheels. SHEFFIELD CORPORATION. Nov. 2, 1945, No. 29095. Convention date, Nov. 20, 1944. [Class 60] A grinding-machine, having a rotatable grinding-wheel mounted on a support, a crusher wheel for forming the grinding wheel, said crusher wheel being rotatably mounted on a holder, a holder support on which said holder is mounted for movement in a direction towards and from the grinding wheel, is characterised by the fact that said holder is yieldingly mounted on said holder support and that means is provided for moving one of said supports to cause engagement of said wheels and movement of said yieldingly mounted holder on the holder support, and means automatically operable as a result of said yielding movement for positively adjusting the wheels one towards the other to force said wheels one into the other at a comparatively slow feeding rate. An annularly ribbed crushing roller 11, for forming a ribbed grinding wheel 10, is freely mounted in a bracket 15 adjustably bolted to a holder 18 slidably guided on a support 20 slidable on a housing 19, a spring 34 being interposed between the lower part of the slide 20 and a projection 35 on the holder 18. Fixed to the rear of the slide 20 is an internally threaded boss 27 engaged by a threaded shaft 28. This shaft is driven, by a motor 49 through gearing 50, 51, 52 and a clutch hub 54 keyed to the said shaft 28, so that the slide 20, and thus the crusher wheel, is moved rapidly down towards the grinding wheel 10. When the crusher wheel contacts the grinding wheel the slide 20 continues to move and compresses the spring 34, the consequent relative motion of the holder 18 and the slide 20 moves a lever 38 to close a limit switch which operates a solenoid 41 to straighten a toggle linkage 43 to move a finger 44 which locks the slide 20 and the holder 18. Also as a result of the closing of the limit switch, and by means of a system of switches and a timing motor, the grinding wheel is driven at a slower speed, by switching over to another driving motor, and the clutch hub 54 is lowered to be driven from the motor 49 through a worm wheel 60 so that the crusher wheel is fed at a slower speed for a predetermined time. The clutch is then auto. matically disengaged to stop further feed of the crusher wheel for a few turns of the grinding wheel and the crusher wheel is rapidly withdrawn, the clutch 54 engaging a clutch plate 53 and the motor 49 being reversed, the holder 18 being unlocked from the slide 20 as a pin 46 breaks the aligned arrangement of the toggle arm 43. Cooling liquid is automatically supplied when the wheels engage the supply being stopped when the crushing action is completed. A cover 73 over the grinding wheel is automatically withdrawn out of the path of the crusher wheel.
Patent GB-997685-A (GB)
Title: Track circuit
IPC: H03K17/82
Filed: 1963-07-23
Abstract: 997,685. Track circuit. GENERAL SIGNAL CORPORATION. July 23, 1963 [Sept. 7, 1962], No. 29109/63. Heading B7N. In a track circuit in which the track rails 3 are supplied with current from a D.C. source 1 via resistor 2, the current flowing in a winding 13 in the output of the circuit in the absence of a train controls, via a pair of cores 10, 110, each formed of a material having a substantially square hysteresis loop, the alternate energization and de-energization of relay 115 from R.F. generator C whereby a relay 15 is continuously energized to signal the absence of a train. The output from clock pulse generator A threads minor aperture 11 on core 10 and major aperture 109 on core 110 and acts to set core 10 and clear core 110. The output from generator B at the same frequency as generator A but shifted in phase therefrom threads major aperture 9 on core 10 and acts to clear the core. The occurrence of a setting pulse for core 10 and the presence of priming current from the track section sets up an anticlockwise flux path around minor aperture 12 and the subsequent clear pulse from generator B reverses the flux direction in the outer limb of the aperture and induces a signal in loop 14 which sets core 110 so that the output of RF generator C induces a signal in loop 114 which, after rectification, operates relay 115. The next clear pulse from generator A prevents the transmission of RF energy to loop 114 and the relay releases. Alternation of relay 115 picks up and holds relay 15. The presence of a train or a fault in the circuit stops the of relay 115 and relay 15 subsequently releases.
Patent GB-877359-A (GB)
Title: Improvements in the flameless reaction of sulphur-containing gaseous hydrocarbons toform carbon monoxide and hydrogen
Inventor: BARTHOLOME ERNST
IPC: C01B3/38
Filed: 1959-08-26
Abstract: Sulphur-containing gaseous hydrocarbons or gases containing the same are reacted continuously and flamelessly with an amount of oxygen which is insufficient for complete combustion and with the optional co-employment of steam and/or carbon dioxide to form carbon monoxide and hydrogen in two stages, a part of the hydrocarbon being burnt over a catalyst consisting of a metal of the platinium group applied to a carrier of a -ilumina in a first stage and the remainder of the hydrocarbon being reacted endothermically with steam and carbon dioxide in a second stage. The catalyst may be prepared either by impregnating a -ilumina with an aqueous solution of platinum chloride at room temperature followed by decomposition in situ or by calcination of a -alumina at temperatures of about 1000 DEG C. or more followed by treatment with an aqueous solution of platinum chloride or chloroplatinic acid.  Sources of sulphur-containing gaseous hydrocarbons are natural gas, coke oven gas and other methane-containing gases. Suitable second-stage catalysts are nickel or alumina, magnesia or zirconia.  An example is given.
Patent GB-996905-A (GB)
Title: Improvements in remote control systems
Inventor: RUSSELL STANLEY WALTER GEORGE
IPC: F15B9/09
Filed: 1961-08-14
Abstract: 996, 905. Electric correspondence control systems. DOWTY ELECTRICS Ltd. Nov. 2, 1962 [Aug. 14, 1961], No. 29224/61. Heading G1N. [Also in Division H3] Manual control of a hydraulic servomotor is effected via two automatically balanced potentiometric systems in tandem, the motor being energized only when both systems behave similarly. As shown (Fig. 1), Transmitter potentiometers VR1A, VR1B are jointly operated by a manual control lever, and the signals at the sliders are compared in amplifiers A, B with the signals at the sliders of receiving potentiometers VR2A, VR2B coupled to the motor. The polarity of the difference signals determines whether a relay RYA or RYB (Fig. 2) is energized in amplifier A, and whether a relay RYC or RYD (not shown) is energized in amplifier B. If the difference signals have the same polarity, indicating normal operation of the two channels, relays A and C (or B and D) operate simultaneously to close the circuit of one energizing coil of a hydraulic valve controlling the servomotor via contacts A1, C1 (or B1, D1). If the difference signals in amplifiers A and B have opposite polarities relays A and D (or B and C) operate simultaneously, opening the circuit to a by-pass control valve at contacts A2, D2 (or B2, C2) whereby the hydraulic servomotor is either locked or completely released. Each amplifier A, B comprises push-pull transistors T1, T2 followed by T4, T7. The latter are emitter-follower coupled to transistors T5, T6 which are normally reverse biased to prohibit collector current and block transistors T8, T9. When the input to T1, T2 is unbalanced, the reverse bias on T5 or T7 is cancelled and T8 or T9 is unblocked, allowing emitter current to energize relay winding RYA or RYB. The total current through T1, T2 is stabilized by transistor T3 and divided between T1, T2 by potentiometer VR3 to produce a desired dead band for the unbalance input.
Patent GB-665080-A (GB)
Title: Instrument for ascertaining the volume or cubic contents of logs, poles or similar shaped material
IPC: G01F17/00
Filed: 1949-11-16
Abstract: 665,080. Computing callipers. SHARKEY, M. Jan. 23, 1950 [Nov. 16, 1949], No. 29280/49. Drawings to Specification. Classes 106 (i) and 106 (ii). An instrument for estimating the cubic contents of felled trees, or other cylindrical articles, comprises a pair of callipers fitted with a scale showing length per unit volume of the article when callipered across its diameter. The callipers are then set to this length with the aid of a second scale and stepped along the article to ascertain the number of such unit volume lengths in its total length, this number being the volume. Alternatively, a simple length measuring-wheel may be provided at the hinge of the callipers and the volume calculated from the ascertained length and length per unit volume. When adapted for measuring trees, the length per unit volume scale is calculated to allow for wastage in sawing.
Patent GB-226349-A (GB)
Title: Improvements in the preparation of sodium
IPC: C25C7/06
Filed: 1923-11-20
Abstract: 226,349. Hulin, P. L. Nov. 20, 1923. Sodium, obtaining; electrolytic furnaces.-In the production of sodium from fused hydrate, carbonate, chloride, or a mixture, a cathode consisting of copper or an alloy thereof is treated, at intervals during working, so as to coat it with a thin film of oxide. Scattering of sodium is thus prevented. Oxidation may be effected electrolytically. In one method, the current through the electrolytic bath is reversed for 2-10 seconds; this period may be increased if a part of the current is diverted through a shunt. In another method, the cathode C is temporarily connected to the anode B so that both act as anodes towards an auxiliary cathode E. The connections are shown as employed for normal operation; when the cathode requires treatment, contacts e, l are first connected so as to bring into circuit the auxiliary cathode E, and then a contact c connected to the main cathode C is uncoupled from contact l and coupled to a contact b, which is connected to the positive supply main through a resistance or directly. Alternatively, an auxiliary circuit may be closed to avoid cutting off the main current during the change of connections. The vat A may serve as auxiliary cathode instead of the special electrode E. In addition, the sodium collector, together with a wire-gauze diaphragm when employed, as in the, Castner apparatus, may form an additional cathode during the oxidation, being connected to the negative main through a regulating resistance. In a multiple furnace each main cathode, or group of cathodes, may be connected in turn as anodes, the others receiving extra current; or auxiliary cathodes may be provided. The anodes may be if iron, nickel, or a resistant alloy.
Patent GB-174172-A (GB)
Title: Improved form of sign for advertising and the like
IPC: G09F13/16
Filed: 1920-10-18
Abstract: 174,172. Henry, A. Oct. 18, 1920. Moving and changing apparatus. -In advertising signs, the letters or designs are built up by attaching to a support reflecting discs b of metal or other material loosely carried on pins c. Vibration is imparted to the support a by mechanical or electrical means so as to produce a scintillating effect. The discs may be dished and formed with six flats at the periphery. Reference has been directed by the Comptroller to Specifications 3750/78, 3846/99, 11906/02, and 17915/03.
Patent GB-395214-A (GB)
Title: Improvements in methods of producing caoutchouc forms for relief and intaglio printing
IPC: B41C3/04
Filed: 1932-10-20
Abstract: 395,214. Printing-surfaces. HORN, H., 43, Eisenstuck Strasse, Dresden, Germany. Oct. 20, 1932, No. 29393. Convention date, Feb. 1. [Class 100 (ii).] A method of producing caoutchouc formes for relief and intaglio printing consists in supplying the matrices or original formes with natural or synthetic, thinly or thickly liquid, or paste-like caoutchouc milk. The caoutchouc milk may be mixed with fillers &c., such as chalk, zinc oxide, heavy spar, cement, zinc or other metal dust, cork powder, and sulphur, and it may be hardened by vulcanizing at normal temperature or in an oven at 115‹ C. The milk before being applied may be vulcanized, concentrated, or mixed with suitable substances to render it micro-porous. The matrix or original forme is preferably coated with a thin layer of caoutchouc-repellent substance, such as gelatine or chalk. The formes may be prepared by using the milk in place of metal in the usual stereotype-casting devices, type-casting machines, &c. The caoutchouc forme may be flat or curved and secured to a cylinder, being preferably attached to a support or reinforcement of sheet zinc or the like. Soft boards, lead plates, celluloid plates, &c. may be used for the matrices.
Patent GB-1445613-A (GB)
Title: Foot-operated control device
IPC: H01C10/10
Filed: 1973-06-20
Abstract: 1445613 Actuation of switches & rheostats; electric motor control SIEMENS AG 20 June 1973 [26 June 1972] 29393/73 Headings H1N and HIS The subject matter is the same as that described for Specification 1,445,614 but the claims are different and are mainly directed to the actuation means for some of the switches and for the potentiometer rheostat control; also to the provision of the latching means. Specifications 1,445,615 1,445,612 and 1,445,616 are also referred to.
Patent GB-1458043-A (GB)
Title: Adjustable assembly particularly for machine tools
IPC: B23B29/16
Filed: 1973-06-21
Abstract: 1458043 Adjustable assembly for roller-box tools ALFRED HERBERT Ltd 25 April 1974 [21 June 1973] 29443/73 Heading B3T In an adjustable assembly suitable for use in a roller box tool means is provided for effecting fine adjustment of the roller units which comprises a threaded member 18 located in a threaded bore 19 of the or each roller carrier 11, 12 the member 18 having a flange 18a which engages in a slot 16b in an intermediate cylindrical member 16 which is located in the carrier 12. The member 16 has oblique serrations 16a which engage corresponding serrations 15 on the body 10 of the roller box tool whereby adjustment of the screw member 18 causes movement of the member 16 which by interaction of the serrations 15, 16a causes displacement of the roller carrier 12. The serrations on the body 10 being formed on a ridge which acts as a guide for the movement of the or each roller carrier. When appropriate adjustment has been effected the roller carriers are clamped by bolts 21, 22.
Patent GB-157618-A (GB)
Title: Universal ball bearing lathe steady
IPC: B23Q1/76
Filed: 1919-11-26
Abstract: 157,618. Waterer, H. C. Nov. 26, 1919. Turning.-A steady rest comprises a sleeve 9 carrying screws 6 which may be adjusted to grip the work by means of a key 11 passed through holes in a fixed annular member 1 having a base 2 bolted to the bed. The sleeve runs on ball bearings 15 in members 14 fitted into the bore of the annular portion, the grooves 18, 19 being registered to permit the insertion of the balls.
Patent GB-1185888-A (GB)
Title: A Method and a Device for Generating a Tone Scale in Musical Instruments
IPC: G10H5/08
Filed: 1967-06-27
Abstract: 1,185,888. Tuning musical instruments. PHILIPS ELECTRONIC & ASSOCIATED INDUSTRIES Ltd. 27 June, 1967 [30 June, 1966], No. 29525/67. Heading G5J. A device for generating a tempered twelvetone scale in electronic musical instruments comprises twelve oscillators, each generating a tone in the octave, the frequencies of three tones satisfying the equations f n-2  - f n-3  = f n /20 = f n-12 /10, in which n is the ordinal number of the tone in the scale, one oscillator frequency being adjusted independently and the other frequencies being controlled by signals derived from two of the other oscillators. As shown in Fig. 1, each oscillator consists of a Schmitt trigger ST, with feedback via R 1 , R 2 , R 3 , C 1 , controlling the period of the rectangular output, and a bi-stable flip-flop FF 1 , producing the basic frequency f n  which is divided by two at each of the flip-flops FF 2 , FF 3 , and by five by the divider Sc 5 , to give a tone of frequency f n /20. Output signals from B n  and C n  of FF 2 , FF 3  respectively generate tones of frequencies f n /2, f n /4 in adjacent lower octaves. The frequency fn/20 is compared with frequencies f n-3 , f n-2  in an AND-gate consisting of diodes D 1 , D 2 , D 3 , D 4 , the current produced by this coincidence unit being integrated in a capacitor C 2 , which delivers a control voltage to an output terminal D n , this control voltage being used to regulate one of the input frequencies to the coincidence unit. The basic frequency setting of each oscillator may be changed by a stabilized voltage V +, and an individually set potentiometer P in each oscillator compensates for variations in the effect of V + . The coincidence unit may be replaced by a phase-sensitive detector. The oscillators may be crystal controlled, and the synchronization method can be applied to a mechanical system. Frequency multiplication may be used instead of frequency division.