baber/WOPTO huggingface dataset:
Patent GB-1357796-A (GB)
Title: Closing bores
IPC: F16J13/12
Filed: 1971-07-08
Abstract: 1357796 Tube expanding DR ING KOENIG AG 8 July 1971 [8 July 1970] 32088/71 Heading B3J [Also in Division F2] A plug for closing a bore in a workpiece comprises a sleeve having a bore, the sleeve being destined to be inserted in the workpiece bore, the outer surface of the plug sleeve being equipped with anchoring means for engaging the material of the confining wall of the workpiece bore, and an expander member which can be driven from the outer end of the plug sleeve inwardly into the plug bore to a final position within the bore so as to progressively effect a local plastic deformation and radial expansion of the plug sleeve during its movement to the final position, said expander member posessing a rounded or ball like configuration at least in the region intended to bear against said bore of the sleeve, and said sleeve bore having an approximately cylindrical configuration. In one form the anchoring means comprises a plurality of annular ribs (Fig. 1) and the expander member 2 is a ball, the ribs undergoing a rolling action to bite into the wall of the workpiece bore. The expander need not be a sphere per se but may be a bulging part of a suitable tool. Particular constructions of plug having ribs only over the central portion of their lengths are described. The expander may be retained at the outer end of the plug by an inturned end 3. The end 9 of the plug may be conical with the narrow end of the cone pointing towards the ball. The end of the workpiece bore may be widened to accommodate the plug, a bevel 5 seating against the shoulder between the workpiece bore and the widened portion to prevent movement while expanding the plug. In one form (Fig. 5, not shown) the end 9 is apertured and the opposite end of the plug is rolled in after expansion to hold the ball against the aperture. A sealing paste or rubber ring may be interposed between the rolled end and the ball. In a further embodiment (Fig. 4, not shown) an external collar at one end of the plug engages the end of the bore, and the shoulder 5 is omitted.
Patent GB-591133-A (GB)
Title: Improvements in electric control systems
IPC: G05D3/12
Filed: 1938-11-05
Abstract: 591,133. Electric control systems. BELL, J., and WRIGHT, C. S. Nov. 5, 1938, No. 32118. [Class 40 (i)] To avoid the lag in a correspondence control system which occurs when the controlling member is moving, an additional advancing movement is imparted to the controlled member proportional to the error signal. As shown, movement of a handle 1 connected to transmitter 2 causes a signal to be induced in the rotor of receiver 5 which controls follow-up motor 10 through amplifier 8 and grid controlled rectifier 9. Shaft 11 drives the load through differential gear 13 in which the movement of a compensating shaft 14 driven by motor 15 is also imparted to the load. Motor 15 is controlled by a rectifier 16, which is actuated in accordance with the voltage difference between the output of amplifier 8 and that of a voltage regulator 17 which is coupled to motor 15 so that shaft 14 and hence the load, is advanced in accordance with the error signal which is assumed to be proportional to the lag. Regulator 17 may be replaced by a potentiometer.
Patent GB-335411-A (GB)
Title: Improvements in catalytic gas reactions
IPC: C07C45/00
Filed: 1929-10-23
Abstract: 335,411. Holzverkohlungs-Industrie Akt.-Ges. Nov. 28, 1928, [Convention date]. Catalytic apparatus.-A reaction chamber for catalytic gas reaction has two of its walls parallel and (separated by a distance which is small compared with the other dimensions of the chamber. The thickness of the chamber must however be sufficient to admit of the easy insertion and removal of the catalyst. The parallel walls may be either flat or curved, e.g. undulated. The Figure shows a chamber with flat parallel sides formed with ribs 3 and tapering end surfaces 6-9, provision being made at 1, 12 for charging and discharging the catalyst. A number of such chambers may be placed side by side in a heating or cooling chamber and connected in series, parallel, or series-parallel in any suitable order. For example when conducting an endothermic reaction the gas may be passed through the last or cooler members of the series arranged in parallel, and then through the hotter members. In another arrangement six chambers numbered from the hottest end of the apparatus are connected in order 6, 5, 4, 1, 2, 3. Specifications 283,887 and 301,799 are referred to.
Patent GB-1248527-A (GB)
Title: Catheter placement unit
IPC: A61M25/02
Filed: 1969-06-26
Abstract: 1,248,527. Spring clips. DOW CORNING CORP. 26 June, 1969 [12 Nov., 1968], No. 32239/69. Heading E2B. [Also in Division A5] A clip for a catheter comprises a flexible disc 25 of silicone rubber and a radially disposed block 29 of less flexible material secured thereto, the latter having an aperture 31 and slit 33 running lengthwise to accommodate the catheter when in position passing through an aperture 27 in both disc and block. The two wings of the block may taper at 45 to the disc, and the x section of aperture and slit may be modified (Figs. 5-8 not shown).
Patent GB-601564-A (GB)
Title: Improvements in or relating to shears or secateurs
IPC: A01G3/02
Filed: 1945-11-30
Abstract: 601,564. Hand-shears. KING, D. J. Nov. 30, 1945, No. 32391. [Class 30] Shears comprise a pair of blades B<1>, C<2> at least one of which, C<2>, has a straight cutting edge and which are pivoted to one another at a point C<1> off-set to one side from the line of the edge of C<2>, and a pair of longitudinal operating-members A, C extending generally along or parallel to the line of the edge, the member C being rigid with the blade C<2> while the member A is pivoted to the blade B<1> at a point A<2> offset on the other side of the line of the cutting edge from the pivot between the blades. The handles are constituted by one end A<1> of the member A and by a lever D pivotally linked at D<1> to the member C and at D<2> to the member A, and are acted upon by a harpoon type of spring E. The blade B<1> comprises two plates having secured between them a strip or pad of brass. A stop member F<1> is pivoted to the member A to engage the head of the bolt D<1> so as to hold the shears in the closed position.
Patent GB-993643-A (GB)
Title: Electric switch for windscreen wipers and washing installations
IPC: H01H13/74
Filed: 1963-08-16
Abstract: 993,643. Windscreen cleaners. SWFSPEZIALFABRIK FUER AUTOZUBEHOER GUSTAV RAU G.m.b.H. Aug. 16, 1963 [Sept. 5, 1962], No. 32457/63. Heading A4F. [Also in Division H2] An electric switch assembly for controlling two motors, one for driving a windscreen wiper mechanism, and the other for actuating a windscreen washing installation comprises a pair of juxtaposed spring-loaded push-buttons 3, 4, with spring-loaded contacts 17 and 18 respectively, each controlling the respective motor. The push-button 4 which actuates the wiper motor is provided with a detent mechanism to hold the push-button in an "on" position until it is again depressed. The push-button 3 which actuates the washer motor is provided with a stud 9 which engages in a groove 11 in the pushbutton 4, so that the wiper push-button 4 is moved to the "on" position when the push-button 3 is depressed. On release of finger pressure the push-button is returned to the "off" position by a helical spring 16.
Patent GB-1244470-A (GB)
Title: Process for the preparation of quinones
Inventor: BRIS LOUIS LE
IPC: C25B3/23
Filed: 1970-07-03
Abstract: 1,244,470. Process for the preparation of quinones. RHONE-POULENC S.A. 3 July, 1970 [4 July, 1969], No. 32464/70. Heading C2C. A process for the preparation of quinones of formula . in which each of the symbols R 1 , R 2 , R 3  and R 4  which may be the same or different, represents a hydrogen atom or a halogen atom or a hydrocarbon radical which may carry substituents, with the proviso that not more than three of the symbols R 1 , R 2 , R 3  and R 4  may represent hydrogen atoms; or the symbols R 1  and R 2  and/or R 3  and R 4  together represent a divalent radical which, in conjunction with the carbon atoms of the quinone nucleus to which it is attached, forms an aromatic ring fused on one side to the quinone nucleus, comprises treating a phenol of formula in which the symbols R 1 , R 2 , R 3  and R 4  are as hereinbefore defined with thallic cations in the presence of water and an acid. The thallic cations are preferably derived from thallic oxide, hydroxide, sulphate, nitrate, chloride, bromide, fluoborate, borate, perchlorate, phosphate, formate, acetate, oxalate, or a thallic alkyl- or aryl-sulphonate containing up to 10 carbon atoms. Suitable acids which may be used are the mineral acids, fluoboric, boric, perchloric, phosphoric, formic, acetic, propionic or methanesulphonic acid.
Patent GB-813936-A (GB)
Title: Improvements in or relating to electric current step generators for use in electronic circuits
IPC: H03K3/04
Filed: 1956-10-26
Abstract: 813,936. Pulse generator circuits. COLE Ltd., E. K., and REEVES, R. J. D. Oct. 28, 1957 [Oct. 26, 1956], No. 32635/56. Class 40 (6). A pulse generator comprises a tetrode or other multi-grid discharge tube having a sharp knee in its anode current/anode voltage characteristic curve so that when the anode is caused to traverse the knee rapidly the consequential rapid increase in screen-grid current produces a steep voltage step at an associated output terminal. Fig. 2 shows a circuit for producing a current step voltage at output terminal O comprising a tetrode tube V1 which has a characteristic, Fig. 1 (not shown), having a sharp knee in its anode current/anode voltage characteristic. The tube is normally cut-off at its control grid so that when a trigger pulse is applied at P the anode current rapidly increases and due to the high value of anode load resistor the tube quickly " bottoms " and the screen current rapidly increases to produce a step waveform across the input of a delay line N. A pulse is thus transmitted down the line, is reflected with change of plurality at the shortcircuited end and appears back across the terminating impedence R to terminate the voltage step at the screen so that a pulse is produced at output terminal O having its duration determined by the two-way delay time of line N. In the circuit described the tube operates with a screen voltage of 500 volts and an anode voltage of 3000 volts, bottoming occurring when the anode current is greater than one ampere the anode load being 300 K ohms. In the modification shown in Fig. 3 the tube V1 also functions as a blocking oscillator to generate a trigger impulse which is applied to the control grid of the tube and initiates the switching of cathode current from the anode to screen-grid circuit. The blocking oscillator section is itself triggered by a pulse applied to input P.
Patent GB-305322-A (GB)
Title: Improvements in radiographic apparatus
IPC: G21K1/02
Filed: 1927-12-03
Abstract: 305,322. Hezlet, R. K.., Pullin, V. E. A., and Warren, A. G. Dec. 3, 1927. R÷ntgen-ray apparatus. - A double grid or lattice diaphragm for eliminating secondary radiations comprises two groups of slats crossing each other and forming a curved structure. The diaphragm is adapted to be moved along an arc whose centre is approximately the focal spot of the X-ray tube in order to prevent the formation of an image of the grid on the plate or film. In the form, shown, two groups of slats a, b are slotted at c and d so as to interfit and form a self-supporting structure, but they may be mounted in a frame e movable on the curved rails h. The slats may have the same outline and lie in planes having a common point of intersection at the X-ray tube. -
Patent GB-834098-A (GB)
Title: Improvements in or relating to devices for preventing the unauthorised use of low-current apparatus
IPC: H01H27/06
Filed: 1957-10-21
Abstract: 834,098. Switches held set and freed mechanically. ZOGMAL, R. P. Oct. 21, 1957 [Oct. 4, 1957], No. 32774/57. Class 38 (5). In a switch for preventing unauthorized use of apparatus, contacts 9, 10 on blades 7, 8, respectively, are kept open by an insulating pin 20 on blade 7 bearing against part 18a of a key-operated lockbolt 18. The latter is held in the position shown, against a spring 22, by the arm 16a of a lever 16 pivoted at 15, the pivot 15 and contact-carrying block 11 being mounted on a U-shaped bracket 13. To prevent unauthorized use, the end 16b of lever 16 is depressed by a button 21, which releases lockbolt 18 and allows the contacts to close, the switch being reset by a key fitted into lock 19. Preferably, button 21 must be pressed to below the surrounding lip 23 so as to guard against accidental tripping of lever 16 by a heavy falling object. An emergency unlocking device comprises a rod 24 which is normally held in a retracted position by a wire and lead seal 26, breakage of the seal allowing a spring 25 to advance the rod 24 to the open-contact position shown. Closure of the contacts may serve to short-circuit pulse initiating contacts of telephone apparatus to prevent outgoing calls.
Patent GB-1012981-A (GB)
Title: Method and apparatus for drying or calcining gypsum
Inventor: KNAUF ALFONS NIKOLAUS
IPC: C04B11/036
Filed: 1962-08-27
Abstract: <PICT:1012981/C1/1> In a method of drying or calcining crude gypsum to form different types of processed gypsum in a single operation, crushed and graded gypsum is arranged as shown in layers of material tapering upwardly and of decreasing grain size downwardly on a continuous grating 2 passing through a tunnel 1, and hot calcining gases are drawn or blown downwardly through the gypsum. A layer of gauze covers or is fixed below the grating, the mesh size of said gauze being uniform in the middle, but decreasing towards the edges, to decrease the gaseous flow rate towards said edges. The continuous grating may be replaced by a series of pellets, and the permeability of the charge support may also be varied longitudinally.
Patent GB-912297-A (GB)
Title: Grinding wheel truing mechanism
IPC: B24B53/065
Filed: 1961-09-15
Abstract: 912,297. Trueing grinding-wheels. CINCINNATI MILLING MACHINE CO. Sept. 15, 1961 [Nov. 8, 1960], No. 33146/61. Class 60. A trueing mechanism for a grinding-wheel having a contoured profile comprises a tool-holder 44, Figs. 1 and 2, which is transversely slidable in a pivotally-mounted yoke 20 and more freely movable than the yoke, and a rotatable drive-shaft 86 which is journalled in the yoke and arranged to provide for slidable movement of the tool-holder in the yoke until the tool-holder is stopped by a stop and then for pivotal movement of the yoke. The diamond-tipped tool 42 is axially-adjustable in its holder by a micrometric adjusting screw and the tool-holder is laterally adjustable in the yoke between ball tracks 46, Fig. 2, within limits set by stops 96, 100 and a further adjustable stop 102, Fig. 8. The drive is effected by a chain 68 having its ends attached to hydraulically-operated pistons which are controlled by an electricallyoperated valve. A sleeve 72, Fig. 4, around the upper pivot bearing 22 of the yoke carries a sprocket 70 which is rotatable by the chain 68 to drive the shaft 86 through a pinion 78 and sector 84, the lower end of the shaft carrying a pinion 88 engaging a rack on the tool-holder. Initial rotation of the shaft 86 causes the tool-holder to be traversed in the yoke so that the tool trues along a straight path; an annular seal 92, Fig. 4, between the yoke and its support bracket 18 resists movement of the yoke during the action. The adjustable stop 102 stops the movement of the holder when the shaft 86 has rotated through 90 degrees so that, as the shaft rotates through another 90 degrees, the yoke is itself pivoted to swing the tool through an arcuate trueing path. Reverse action of the shaft results first in the tool-holder moving in the yoke away from the grinding- wheel, the seal 92 resisting movement of the yoke, and then, with the tool-holder engaging the stop 96, pivotal movement of the yoke to its starting position. By suitable positioning of the stops, the tool-holder may be held in a fixed position in the yoke so that the entire rotary movement of the shaft 86 is communicated to the yoke and an arcuate profile is trued across the full width of the grinding-wheel.
Patent GB-343005-A (GB)
IPC: B60L15/00
Filed: 1929-11-01
Abstract: 343,005. Accelerometers. INTERNATIONAL GENERAL ELECTRIC CO., Inc., 120, Broadway, New York, U.S.A.- (Assignees of Allgemeine Elektricitõts Ges.; 2, Friedrich Karl Ufer, Berlin.) Nov. 1, 1929, No. 33277. Convention date, Nov. 1, 1928. [Class 106 (iii).] A weight M pivoted about an axis D acts upon a pressureresponsive resistance W and so varies the excitation of a control relay F which may be replaced by an indicating instrument calibrated to acceleration values, and the driver controlling the vehicle by hand having regard to the readings of the instrument.
Patent GB-726180-A (GB)
Title: Improvements in or relating to conveyors
IPC: B65G49/04
Filed: 1953-12-01
Abstract: 726,180. Step-by-step conveyers. UDYLITE RESEARCH CORPORATION. Dec. 1, 1953 [Dec. 4, 1952], No. 33330/53. Class 78 (1). In a conveyer of the kind in which hollow articles to be treated in successive baths of liquid are suspended by hooks from and are movable along a vertically movable horizontal rail leading from one bath to the next, the rail is pivoted by means which is actuated as the rail is raised to tilt the articles to pour out any liquid remaining in them. Each movable rail 19, Fig. 2, is suspended from a vertically movable frame 5 by arms 13, each of which carries a block 14. A shaft 16 is non-rotatably mounted in each pair of blocks and its projecting ends carry bearing blocks 18 to which the rail 19 is secured. The work is suspended by hooks 20 which engage the rail 19 and are themselves engaged by pushers 23 pivotally mounted on a reciprocating bar 22. An arm 24 is secured to the end face of each rail 19 and carries a roller 29 which bears against a fixed cam 32. This cam is shaped so that the work is first tilted, Fig. 3, to discharge the liquid from it and is then returned to its original position in which the hooks are engageable by the pushers to be moved into position over the next bath before the rail is lowered.
Patent GB-649114-A (GB)
Title: Improvements relating to radio direction finding apparatus
Inventor: HART GEOFFREY WALTER
IPC: G01S13/02
Filed: 1947-12-18
Abstract: 649,114. Radio direction-finding. ELECTRIC & MUSICAL INDUSTRIES, Ltd. Dec. 18, 1947, No. 33385. [Class 40 (vii)] Radar apparatus comprises an angularly movable scanner and a cathode-ray tube for indicating the positions of objects in the field scanned by the scanner, and a directive antenna mounted on said scanner so as to move angularly therewith capable of receiving signals from a transmitter together with means for varying the brightness of the radial trace on said tube screen in accordance with the strength of signals received by said antenna so that both the positions of the scanned objects and the direction of the transmitter are indicated. The direction-finding loop 1 is preferably mounted on top of the radar scanner 2, a coupling arrangement 5 synchronizing the angular direction of the radial trace in the cathode-ray tube 3 with the direction of the aerials. Signals received by the loop 1 combined with those from sense aerial 6 (giving a cardioid pattern) are applied to rectifier and amplifier 18. The output from unit 18 is fed through a first differentiating circuit 8 (which may comprise a saturated inductance) whose output changes rapidly at each minimum value of aerial system signal, to a second differentiating circuit 10 giving positive pulses corresponding to the nulls. The pulses are fed to brighten the radial trace on the cathode-ray tube each time it passes through the angular position corresponding to the transmitter direction. Alternatively the output from the differentiating circuit may operate a trigger circuit which provides the brightening pulses for the indicator. In a modification the output of the detector 18 is fed to a limiter device so that negative pulses are obtained which may be used directly, or through a trigger circuit, to provide a radial indication as before. Means may be provided for switching off the radar display to avoid confusion with the direction indication. Specification 617,737 is referred to.
Patent GB-1512682-A (GB)
Title: Soil conditioners and fertilizers from spent sulphite liquor
IPC: C05C3/00
Filed: 1975-08-12
Abstract: 1512682 Slow release fertilizer ITT INDUSTRIES Inc 12 Aug 1975 [19 Aug 1974] 33532/75 Heading C1B A water insoluble nitrogen source is prepared by reacting spent sulphite liquor, at 170-250C. with at least half the liquor solids weight of hexamethylenetriamine or a NH 4 OH:formaldehyde in a weight ratio of at least 1:2. The reaction preferably proceeds for 15 minutes-3 hours.
Patent GB-1474277-A (GB)
Title: Laser amplifier
IPC: H01S3/23
Filed: 1974-07-30
Abstract: 1474277 Laser amplifier H HUGHES 30 July 1974 [10 Aug 1973] 33601/74 Heading H1C A laser beam 1 is successively and progressively increased in size and power by being passed through a succession of excited laser media 2 each medium having an anti-reflection coating on its input surface, and also having associated therewith means to reflect the laser beam so that the emergent beam is directed on to the next element. The medium may be gaseous, liquid, or solid, and the reflector may be a dielectric or metallic mirror 3 attached to, or separated from the laser medium and in the latter case not necessarily parallel. The pumping energy source 4 may be a flash tube or photo-diode, and a reflecting surface, which could be the main beam reflector, may be employed to facilitate multiple passage of the pumping energy through the medium. Two media 2<SP>1</SP>, Fig. 3, may be associated with a common reflector.
Patent GB-1140658-A (GB)
Title: Flooring slabs or tiles
IPC: E04F15/10
Filed: 1967-07-21
Abstract: 1,140,658. Floor tiles. PIRELLI S.p.A. 21 July, 1967 [23 July, 1966 (2)], No. 33602/67. Heading E1B. A moulded elastomeric or synthetic resin flooring tile has a tread surface including two sets of parallel rows I and II of diamond or figure eight shaped embossments 2<SP>1</SP> and 2<SP>11</SP>, the edges 3 of the embossments being chamfered. The lower surface has keys to act as anchorage elements when laying the tiles.
Patent GB-1214632-A (GB)
Title: Method of joining thermoplastic pipes
IPC: F16L47/02
Filed: 1967-06-08
Abstract: 1,214,632. Pipe joints. CHEMICAL PIPE & VESSEL CO. Ltd., and G. C. TYCE. 7 June, 1968 [8 June, 1967; 21 July, 1967], Nos. 26448/67 and 33683/67. Heading F2G. Thermoplastic piping is joined or connected to an internal or external thermoplastic fitting by a tapered spigot-and-socket joint which is secured by welding. The angle of the taper lies between 5 and 20 degrees, especially 10-12 degrees, and the two tapers may be different. The tapering and fusion operations may be performed simultaneously using a heated tapered fusion tool. If desired a band of metal or cellulose may be placed round the pipe or fitting during fusion. Alternatively, the tapers may be cut and subsequently melted before being engaged into one another. The degree of entry of the joint may be limited by a land at the inner end.