baber/WOPTO huggingface dataset:
Patent GB-756734-A (GB)
Title: Apparatus for facilitating the piloting of aircraft
Inventor: CHOMBARD PIERRE ANDRE
IPC: B64D45/00
Filed: 1953-02-16
Abstract: 756,734. Indicators for aircraft. FRANCAIS, ETAT. Feb. 16, 1953 [Feb. 16, 1952], No. 4333/53. Class 4. A transparent panel 4 marked with a vignette 3 representative of an aircraft, is mounted in a rotatable ring 5 in front of the horizon bar of a standard gyro-horizon by means of rollers 20 attached to a frame 6, the periphery of the ring being toothed to engage with a driv ing pinion connected by shafts 22, 23 and 25 and a gear train 24, to an electric motor 7. The shaft 25 carries a cam 31 formed with a reentrant portion engaged by a roller 33 mounted on a spring-loaded lever 32 so that the ring 5 is returned to its normal position in the event of failure of the motor 7, and a peg 39 on the cam engages stops 40, 41 to limit movement of the mechanism. A motor 8, driving through a similar gear train 26 and cam mechanism 35 drives a gear 27 having an arm pivotally connected to one end of a rod 28, the other end being secured to a threaded fitting 30 engaged by a manually adjustable screw 12. The rod 28 engages with one end of a further rod 29 connected to a bell-crank extension 16 on the frame 6 for rocking movement about a pivot 6a. The motors 7 and 8 are respectively energized by signals from mixers and amplifiers 47, 48 and feed-back signals are generated by pick-ups 45, 46. It is stated that the apparatus may be used to indicate variations of altitude, or deviation from a selected vertical speed in upward or downward flight or deviation from an I.L.S. radio beam and in each application the pilot ensures coincidence of the vignette 3 with the horizon bar of the gyro-horizon in a vertical sense. Flight on a predetermined course is achieved by maintaining the vignette and the horizon bar in coincidence in a rolling sense and in all applications the vignette is controlled by selected signals supplied to the motors 7 and 8. In a further embodiment the cam centring devices are replaced by balanced tension springs and the pick-ups 45, 46 are replaced by potentiometers wherein the movements of the wipers are limited in order to limit the movement of the vignette.
Patent GB-247951-A (GB)
Title: Improvements in self-centering chucks
IPC: B23B31/163
Filed: 1926-02-16
Abstract: 247,951. Laiter, F. Feb. 18, 1925, [Convention date]. Void [Published under Sect. 91 of the Acts]. Chucks. - A selfcentering chuck which eliminates the use of screws for securing the parts in position comprises a scroll-plate 3 rotatably secured on a spindle 1 by a nut a and engaging jaws 8 slidablv mounted in radial guides in a disc 15. The scroll-plate may be rotated by hand or bv a removable key 12 having teeth 10 engaging notches 9 on the plate and inserted in a recess in the disc 15. The jaws 8 have a considerable peripheral surface for engaging the work and may be replaced by jaws 6, Fig. 5. The chuck is mounted on a machine-spindle either by its tapered spindle 1 or by a sleeve 1<1> screwing at one end on the chuck-spindle and at the other end on the machine-spindle.
Patent GB-921198-A (GB)
Title: Improvements in or relating to electrical counting circuits
Inventor: ALEKSANDER IGOR
IPC: H03K23/80
Filed: 1961-02-06
Abstract: 921,198. Tunnel diode multi-stable circuits. STANDARD TELEPHONES & CABLES Ltd. Feb. 6, 1961, No. 4381/61. Class 40 (6). [Also in Group XIX] Each bi-stable stage of a stepping circuit includes two tunnel diodes connected in series with unlike poles connected together, alternate stages being connected to alternating voltages of mutually opposite phase, each cycle acting as a shift pulse. Fig. 1 shows the I/V characteristic of a tunnel diode. Alternate stages of a shift register, Fig. 2, are connected to lines A, B fed by shift pulses in the form of oppositely-phased sinusoidal voltages superimposed on a continuous voltage, as shown in Fig. 3. The upper tunnel diode in each pair has a lower value of peak current and is therefore normally in the high voltage state. A trigger voltage applied at P coinciding with a shift-pulse switches the first pair so that the lower diode is in the highvoltage state. This higher voltage becomes the triggering voltage for the next stage via a germanium point contact diode at the occurrence of the next shift pulse. The circuit may be used as a ring counter.
Patent GB-676862-A (GB)
Title: Improvements in shells or casings on vacuum electric discharge tubes
Inventor: ROBINSON ERNEST YEOMAN
IPC: H01J19/66
Filed: 1945-02-22
Abstract: 676,862. Electric discharge tubes. EDISON SWAN ELECTRIC CO., Ltd. March 22, 1946 [Feb. 22, 1945], No. 4442/45. Class 39 (i). An electric discharge tube, particularly a valve, comprising a cylindrical glass bulb 1, Fig. 1, has an end-closure formed by a separately made glass pressing 3 in which are sealed the electrode lead-out wires 4, and is enclosed in a cylindrical metal shell 5 closely fitting the bulb along its whole length and provided with a disc-like base 6 perforated to pass nodules 7 surrounding the lead-out wires 4 and bearing against the glass pressing 3, the shell 5 having fixed in it at its upper end by soldering or welding a cup-shaped member 9 which has a central perforation 10 through which the pip 2 of the bulb extends and which presses on top of the bulb 1 to lock it firmly within the shell. One of the nodules 7 may be larger than or of different shape from the others and is accommodated in a correspondingly shaped perforation in the base 6 for correct orientation. A hollow metal spigot 8 passes through a central perforation in the base 6 and is welded, soldered or riveted thereto. The perforation 10 may be of star-shape, as shown in Fig. 3, providing a plurality of resilient tongues 10a. In modifications the shell.5 is caused to press on top of the bulb 1 by spinning over or crimping or by cutting tongues therein. In the modification shown in Fig. 2, the perforated base 6 of Fig. 1 is replaced by an inturned flange 6a having a plurality of teeth 6b which lie in the depressions between the nodules 7, 7a. The nodules 7, 7a may be omitted and the teeth 6b positioned in radial depressions extending from the periphery of the glass pressing 3. Specification 676,861, [Group XXXVI], is referred to.
Patent GB-155147-A (GB)
Title: Improvements in expansible circular tables
IPC: A47B1/05
Filed: 1920-02-13
Abstract: 155,147. Seiler, J. Feb. 13, 1920. Expanding tables.-An expanding circular table is provided with a number of expansion pieces adapted to form a ring round the fixed central part of the table top under which they are stored when out of use. The expansion pieces r, shown collapsed like a fan in Fig. 1 and extended in Fig. 4, are hinged to carriers v having a pin-andslot connexion with a disk e resting on rollers. The carriers v are arranged to pivot and rise and fall on vertical rods o and they carry members l, k for tilting the expansion pieces r to enable them to overlap fanlike when collapsed. When the table is expanded, the parts are locked in position by catches on the carriers v engaging locking- members on the fixed central part of the table top and on the table rim b, which can be screwed up and down.
Patent GB-802881-A (GB)
Title: Mercuri hydroxy propyl derivatives of theobromine and process for preparing same
IPC: C07F3/10
Filed: 1957-02-11
Abstract: The invention comprises compounds of the formula <FORM:0802881/IV (b)/1> wherein R is a monocarboxy or polycarboxy C1-C8-alkyl group, a monocarboxy or polycarboxy aromatic group, or a C1-C8-polyhydric alcohol group, and salts thereof. These compounds may be prepared by reacting a 1 - (gamma - R1 - mercuri - betahydroxypropyl) theobromine, R1 being a halogen atom, an hydroxy or acyloxy group, with a C1-C8-mercaptan monocarboxylic or polycarboxylic acid, an aromatic mercaptan monocarboxylic or polycarboxylic acid or a C1-C8-mercaptan polyhydric alcohol.  The group R1 is preferably chlorine, bromine, acetoxy or other C1-C8 acyloxy group.  Using mercaptan acids, the reaction may be carried out in dilute aqueous sodium hydroxide at room temperature; polyhydric mercaptans may be reacted in an organic solvent such as a lower alcohol, benzene or toluene in the absence of a base and at temperatures up to the reflux temperature of the solvent.  The invention includes salts-those compounds containing carboxy groups form sodium, potassium and ammonium salts.  Salts are also formed with amines such as procaine, choline and bursine.  The compounds of the invention are potent diuretics, and may be administered by all routes.  In an example, 1 - (gamma - acetoxymercuri - beta - hydroxypropyl)-theobromine in aqueous sodium hydroxide is reacted with thiolactic acid to yield 1-[gamma - (1 - carboxyethylmercapto) - mercuribeta - hydroxypropyl] - theobromine.  Other examples describe the preparation of 1-[gamma-(1 - carboxymethylmercapto) - mercuri - betahydroxypropyl] - theobromine, 1 - [gamma-(1,2 - dicarboxyethyl mercapto) - mercuri - beta-hydroxypropyl] - theobromine and 1 - [gamma-(thiosorbityl) - mercuri - beta - hydroxypropyl]-theobromine.
Patent GB-1095229-A (GB)
Title: Method and device for the separation of ceramic flooring slabs
IPC: B28B13/04
Filed: 1966-02-02
Abstract: 1,095,229. Separating sheets. J. BRUTAR. Feb. 2, 1966 [Feb. 4, 1965], No. 4574/66. Heading B6B. Apparatus for separating ceramic slabs singly from the bottom of a pile B, comprises a base A having a central square opening A3 which is larger than the slabs, and two opposed slides C1, C2 operable in recesses A1, A2 in the base to cover the opening A3 partially and support the slabs by means of projections C11, C22, respectively, thereon. Two superimposed jaws F1, G1 slotted at FG to engage over a fixed pin E1 on the base A, and two similar jaws F2, G2 slotted at GF to engage over a fixed pin E2 on the base, are movable towards and away from the sides of the pile B, and can grip the two bottom slabs. Wedging means is provided to separate the two jaws F2, G2 at the point P. In operation, when the pile B is resting on the slides C1, C2, both sets of jaws are moved inwards to grip the bottom two slabs, the slides are withdrawn to fully expose the opening A3, the jaws F2, G2 are then moved apart relatively to each other at the point P so that the adhesion between the bottom slab and the one above is broken, the pressure of the lower jaws G1, G2 is relieved, and the bottom slab then falls away from the pile and through the opening A3. The slider C1, C2 are now pushed inwardly, and the upper jaws F1, F2 are released to allow the pile B to fall on the slides. The means acting at P may be a simple or a screw-operated wedge, and the movements of this means and the jaws and slides, can be performed by pneumatic, electric, or mechanical means against the action of return springs or weights.
Patent GB-751509-A (GB)
Title: Fluorescent lamp starter switch incorporating cut-out and hold-out switch
IPC: H05B41/06
Filed: 1954-02-17
Abstract: 751,509. Control systems for space-discharge apparatus. COTTRELL, F. W. Feb. 17, 1954, No. 4611/54. Class 38 (4). [Also in Group XXXVII] A fluorescent lamp starter switch incorporates a cut-out and hold-out switch to render the starter switch inoperative should the lamp fail to ignite, the cut-out and hold-out switch comprising a fixed contact normally mating with a moving contact on one end of a bimetallic arm consisting of two bimetallic strips B, D joined end to end with their low expansive faces in contact to provide ambient temperature change compensation, the other end of the arm being formed to a U-shape and fixed to one side of an insulating panel A to the other side of which is secured the lamp glow starter switch M. Disposed inside and outside the U-shaped loop are respective heating resistors G, F, and should the switch M fail to ignite the lamp the latter first heats up to open the contacts at the end of the arm, whereupon the former which is shunted across the switch and contacts also heats up to maintain the contacts open.
Patent GB-159186-A (GB)
Title: Improvements in presses
IPC: B30B1/26
Filed: 1921-02-09
Abstract: 159,186. Smith, F. H., and Nowak, A. K. Feb. 24, 1920, [Convention date]. Forging-machines.-A press for forging:, &c. comprises a ram 2<1> supported by bolts 10 from a member 1<1> driven by a crank 6 &c., the member 1<1> and ram 2<1> being provided with pistons 1, 2 respectively of equal area working in a cylinder 3 to which pressure-fluid is admitted by a pipe 11, means being provided for adjusting the fluid pressure to the character of the operation. As shown, the pipe 11 is connected to a cylinder 19 fitted with a piston 20 coupled to a piston 15 working in a compressed-air cylinder 14, the pressure in which is regulated bv a piston 24 working in a cylinder 23 connected to the cylinder 14. The piston 24 is actuated by screw gearing 26, 27 driven by a motor 28 and is operated in accordance with the pressure desired. The cylinder 23 is provided with an exhaust-port 31 through which air may be allowed to escape to adjust the volume of air in the cylinders 14, 23 in order to determine the pressure on the ram 2<1>. A check valve 12 is provided on the pipe 11, which valve can be partly or fully opened to regulate the action of the press.
Patent GB-1262351-A (GB)
Title: Improvements in or relating to stands
Inventor: HITZE WERNER
IPC: F16M11/38
Filed: 1969-01-28
Abstract: 1,262,351. Stands. W. HITZE. Jan.28, 1969 [Feb.1, 1968], No.4739/67. Heading A4H. A stand comprises a mounting plate 1 and two opposed pairs of pivotable supporting legs 8, 9 and 10, 11, the legs of each pair being independently pivotable about a respective common axis 6, 7 to adapt to uneven surfaces. Axes 6, 7 are provided by pins extending at right-angles from spindles 4, 5 rotatably mounted in plate 1 so that the legs can be folded beneath plate 1 about spindles 4, 5. The legs are mounted on the pins by disc bearings 26, 27 see Fig.4 (not shown) and secured by adjustable nuts 12, 13. A spring between each nut and bearing 27 see Fig.4 (not shown) provides friction forces between the bearing 27, 26 and between bearing 26 and plate 1, the former force being the greater so that initially the legs are pivoted in pairs, and afterwards the legs of each pair can be manually relatively pivoted together or apart, the latter movement being limited by stops 31, 32, 29, 30. The legs have rubber feet 14-17, which may comprise suction cups 18 Fig.3 (not shown). A plate 23 carrying a mounting 24 for a camera, microphone etc. is mounted on plate 1 by a screw 20 held by a nut 22 and adjustable in slots 19, 25. The legs may have adjustable angle knees. The folding axes may be provided by ball joints 38 Fig. 5 (not shown) so that each pair of legs also pivots about an axis perpendicular to the folding axis and to the pin.
Patent GB-1097865-A (GB)
Title: Improvements in or relating to combine harvesters
IPC: A01D41/14
Filed: 1965-02-03
Abstract: 1,097,865. Combine harvesters. TEXAS INDUSTRIES Inc. Feb. 3, 1965 [Feb. 12, 1964], No. 4781/65. Heading A1F. A tractor-mounted combine-harvester which is adapted automatically to maintain a substantially constant cutting height comprises support wheels (11) (Fig. 1, not shown) about which the harvester is pivotable and feeler members e.g. wheels 17 (Fig. 2) attached to and supporting a mowing platform 7A. The wheels 17 are mounted on arms 18 and their positions relative to the platform may be varied by means of hydraulically operable cylinders 21. Each feeler member has a corresponding lifting cylinder 51, and the operation of only one feeler member will be described. The platform is pivoted at 16A to portion 15, and upon relative movement a valve 40 in a hydraulic circuit is actuated by an arm 39 fixed to each crop divider 16. When the wheel 17 passes over a bump the ports 27, 29 of valve 40 are brought into communication to enable pump 33 (Fig. 3) to cause lifting cylinder 51 to be extended since a further valve 45 normally has its ports 27, 28 in communication. Similarly when the wheel 17 drops the ports 27, 28 of valve 40 are brought into communication and fluid in the cylinder 51 then flows to sump 31. Upon movement of lever 52 in direction M, the ports 27 of valve 45 are brought into communication and fluid passes from the pump directly to sump, thereby raising the platform. Movement of lever 37 controls actuation of cylinder 21. In another embodiment (Figs. 4 and 5, not shown) the feeler members comprise steel skids.
Patent GB-1396551-A (GB)
Title: Trestles and scaffold
IPC: E04G1/28
Filed: 1972-02-02
Abstract: 1396551 Scaffold trestles; building blocks M M MOULTON 5 May 1972 [2 Feb 1972] 4783/72 Headings E1B and EIS A box-like unit for building up a scoffold trestle comprises a hollow rectangular parallelepipedic body of plastics material, the top and sides being closed, the length being an integral multiple of the width, the top or bottom having an aperture 13 at each corner and 14 at intervals of unit width along the length, the bottom or top respectively having a projection 15, 16 aligned with each aperture, whereby such units may be stacked (see Fig 2, not shown) with projections and apertures interengaging, the intermediate apertures 14 being of double length to be able to receive two projections. Intermediate projections 16 at opposite sides of the unit are relatively offset on opposite sides of a transverse plane 17 centrally through the associated apertures 14. The top 11, which serves as a platform, may be strengthened by gussets 12. The bottom of the unit may be closed or open.
Patent GB-556891-A (GB)
Title: Improvements connected with loose leaf binders
IPC: B42F13/12
Filed: 1943-03-24
Abstract: 556,891. Loose-leaf binders. BROADHURST, C. J. March 24, 1943, No. 4810. [Class 146 (i)] In loose-leaf binders of the kind in which the sheets are held by tagged laces passing through a clamping- bar, the clamping-bar is in the form of a board D of approximately the full dimensions of the sheets, so as to protect the top sheets from damage by the laces or tags, and to provide a flat surface for writing on the sheets on the left-hand side of the binder, when open. The clamping-bar, which has gripping- devices F for the laces E, is hinged to the cover A of the binder, and is preferably formed with an additional hinge G, so that it can be folded back on itself.
Patent GB-1245181-A (GB)
Title: Improvements in or relating to inductive position-controllers
IPC: G11B5/55
Filed: 1969-01-29
Abstract: 1,245,181. Measuring displacement electrically. SIEMENS A. G. Jan. 29, 1969 [Feb. 1, 1968], No.4879/69. Heading G1N. An inductive displacement transducer comprises a rectangular zig-zag conductive pattern SM Fig. 1 on a fixed member FG fed with A. C. from a source Q, faced by a similar conductive pattern EM on a shorter movable member SG, whereby the amplitude of the voltage induced in the movable pattern EM varies sinusoidally with axial displacement, and is zero when crosswires S Fig. 2 of the movable member are midway between the crosswires S of the fixed member. If the induced voltage is fed via amplifier V and phase rectifier PG to a control device R attached to the movable member SG, the latter is automatically moved to a position of zero induced voltage. To compensate for the voltages induced in the linkwires SV, the energizing current I is returned to the feed point P by two parallel paths L. The transducer may be associated with a linear or circular path.
Patent GB-590416-A (GB)
Title: Apparatus for playing a game
IPC: A63F5/04
Filed: 1945-02-27
Abstract: 590,416. Board games. PARKER, A. R. Feb. 27, 1945, No. 4890. [Class 132 (ii)] A board, for playing a game simulating " snooker," is marked with coloured discs A disposed in the manner of balls set for "snooker." A coloured playing piece is provided for each marking and the pieces are removed by the player in accordance with a chance device consisting of a pointer 9 rotating over a scoring disc 4 with coloured sectors, at least one of the sectors being of a colour not marked on the board. Score indicators 5 are provided. The pegs 6 may be replaced by sliding pointers (Fig. 4, not shown). The scoring disc may be marked on the board or formed as a separate disc and the pointer may be removable. A scoring disc may be provided at each end of the board. The board may be foldable. In the form shown in Fig. 1, the board folds along the lines 3, 3 to form a box. In a modification, the board is arranged under a glass plate in a tray-like frame, the pointer being carried by a detachable clip engaged with rim of the tray.
Patent GB-118240-A (GB)
Title: Improvements in and connected with Strainers or Turnbuckles for Tierods and the like.
Inventor: ROE ALLIOTT VERDON
IPC: B64C3/00
Filed: 1918-03-20
Abstract: 118,240. Roe, A. V. March 20, 1918. Addition to 17740/15, [Class 45, Fencing &c.]. Locking nuts.-In the device described in the parent Specification the cupped portion 2 of the forked body member 1 and the shoulder 4 of the nut are made partly spherical in shape so as to act as a ball-and-socket joint and allow lateral movement of the stay wire without risk of injury. Locking is effected by a wire 13 as previously described and by a lock-nut 10 carried bv the screwed end of the stay wire. Where the stay wire is secured to a spar of the aeroplane a spring locking washer is employed having lugs 27, adapted to engage squared faces 20 on the shouldered nut, and spring arms 24 provided with lugs 25 to embrace the arms of the forked body member 1. A lock-nut 21 serves to secure the washer to the screwed end of the stay rod, which may be provided with flats to lock the washer positively in position.
Patent GB-633302-A (GB)
Title: Improvements in and relating to arm-chairs
IPC: A47C1/035
Filed: 1948-02-19
Abstract: 633,302. Seats ; bed settees. HARDY, H. Feb. 19, 1948, No. 4972. [Class 52 (ii)'] An arm chair is provided with a seat pivoted at its front to the chair frame and at its rear to the lower end of the back rest which is also pivoted, intermediate of its ends, to bars slidably mounted in the arms of the chair so that the mclinations of the seat and back may be adjusted by the occupant by varying his posture. The arm chair may be converted into a bed. The seat 1 is pivoted at 2 in sockets 3 on the chair frame and at its rear to the back rest 6 at 5, the back rest also being pivoted at 9 to slide bars 7 guided in the arms 8. To convert the chair into a bed the back rest is released from the slide bars 7 and is interconnected to the seat by stays 33. The seat and back are then rotated rearwardly bringing the foot portion 19, which is pivoted to the seat, with it, rollers on the portion 19 being guided by the members 39. The chair frame is divided into two sub-frames 17, 18 pivoted together at 26 and releasably locked at the rear. After unlocking the sub-frame 17 is swung upwardly and forwardly until the arms 8 rest on the floor the pivoting hinges being such that the arms 8 approach one another to serve as a support for the foot portion 19. The stays 33 are then removed and the back rest, seat and portion 19 are then supported horizontally to form a bed. In a modification the chair frame is not divided into sub-frames but a support for the foot portion 19 is slidable from within the chair frame. Pins 13 or other means are provided for locking the back rest in its adjusted position when in chair position.