baber/WOPTO huggingface dataset:
Patent GB-556573-A (GB)
Title: Improvements relating to sextants and like angle-measuring instruments
IPC: G01C1/08
Filed: 1942-03-27
Abstract: 556,573. Sextants &c. LINK AVIATION DEVICES, Inc. March 27, 1942, No. 4120. Convention date, April 5, 1941. [Class 97 (ii)] A sextant or like angle-measuring instrument for use in aeronautical navigation is fitted with a lighting unit and an image reflecting unit and is provided with a grip member shaped to be readily grasped by one of the observer's hands and located so that the weight of the instrument is distributed evenly, both transversely and longitudinally, with respect to the grip member which is so positioned that it may be grasped by the hand with the wrist in the normal position when the instrument is held in the sighting position. As shown, the grip member is formed by a triangular housing 10 containing three chambers into which the lighting unit 14, bubble unit 24 and image reflecting unit 30 are removably fitted. The lighting unit 14 is retained by friction and is provided with a combined rheostat and switch control 18. A peep glass 29 permits observation of the lamp' and bubble, and illuminates the bubble in daylight. The image reflecting assembly 30 is retained by a screw 40 and carries an angularly arranged mirror 34 and magnifying lens 36 to direct the image of the bubble to an apertured eye piece 47. A mirror indexing assembly 49 mounted between cheeks 46 comprises an optical mirror 68 rotated by an external index arm terminating in a vernier movable against a graduated arc at the foot of the casing. Filter glasses 76, 78, selectively usable, are provided, but may be rendered inoperative by turning their carrying arms 82 into the position shown by broken lines. In using the instrument, the indexing mirror 68 is rotated to catch the reflected image of the bubble as a star is being observed directly through the mirror from a point below the mirror and at the left side of the instrument as seen in the Figure. For observations on the moon or sun the eye-piece 47 is used, the moon or sun being observed by reflection and the bubble being observed through the mirror. The surfaces 90 of the case are roughened to afford a secure grasp to the fingers of the hand holding the instrument. The index or setting arm 56, Fig. 6, for rotating the mirror 68 carries a knob 92 which may be clamped by a cap 104 to a roller 98 running on a track on the casing. By rotating the knob 92 the arm may be adjusted in relation to its co-operating scale. Contact between the roller 98 and its track is adjusted by rotating an eccentric sleeve 96.
Patent GB-727664-A (GB)
Title: Improvements in and relating to flame-proof electric switchgear
Inventor: BEASLEY JAMES
IPC: H01H9/04
Filed: 1952-02-15
Abstract: 727,664. Two-part couplings. combined with switches. METROPOLITAN - VICKERS ELECTRICAL CO., Ltd. May 14, 1953 [Feb. 15, 1952], No. 4123/52. Class 38 (1). In a fiameproof switch-box carrying a socket for connection by the switch to a battery, interlocking means are provided between a plugjacking member and the switch for preventing movement of the switch when the plug is with drawn and movement of the jacking member from the plug-inserted position when the switch is closed and means locking the switch in the open position are engageable by the plug on insertion to release the switch. In the embodiment shown in Fig. 1, the operating shaft 9 of an isolating switch projects through the side of the box and the socket contacts 18, Fig. 4, are contained in a receptacle 20 in the lower face 5 of the box. The plug has an outer casing 22 provided with a lug 25, Fig. 5, which engages between projections 26, 27 on the box to register the contacts correctly. A recess 31a in the plug casing is engageable by a bar 31 on the jacking member 28, the latter being screwthreaded into lugs in the receptacle 20 and carrying an operating handle 34. In the withdrawn position of the plug, the switch is locked open by a spring-pressed lever 46, Fig. 6, having an abutment 47 engaging a slot 48 in a sector-plate 42 carried by the switch shaft 9, a stop-collar 35 fixed to the jacking member preventing abutment 47 from being cammed out of slot 48 by rotation of the sector plate. A second interlock is provided by a bell-crank lever 37, Fig. 4, a projection 44 on which is spring-pressed into a notch 43 on the sectorplate 42. On insertion of the plug by means of the jacking member, the plug casing depresses a plunger 36 which rotates lever 37 and withdraws projection 44 from the sector plate. At the same time collar 35 is moved clear of lever 46 and the switch can be operated. In positions of the switch other than the open position lever 46 is cammed by the sector-plate to project below collar 35 and this prevents withdrawal of the jacking member and hence the plug. In a modification, Fig. 10, an automatic circuit-breaker replaces the isolating switch and the operating shaft 9a thereof is connected by links 104, 105 with a sector plate 42a integral with a pivoted sleeve 106. A lever 37a with a projection 44a co-operates with sectorplate 42a similarly as lever 37 in the previous embodiment co-operates with sector plate 42. A second lever 46a co-operates with a second sector-plate 42b on sleeve 106 and with the stop collar on the jacking member in a similar manner to lever 46 in the previous embodiment.
Patent GB-958240-A (GB)
Title: Improvements in or relating to devices for measuring x-rays
IPC: G01T1/185
Filed: 1961-02-03
Abstract: 958,240. Measuring X-ray intensity. PHILIPS ELECTRICAL INDUSTRIES Ltd. Feb. 3, 1961 [Feb. 6, 1960], No. 4156/61. Heading G1A. A device for measuring the intensities of X- rays comprises two ionisation chambers separated by an X-ray absorber, the ionisation currents being connected in opposition to an indicator or integrator. The absorber and the chamber dimensions are chosen so that the ionisation currents for two different radiation qualities are inversely proportional to the absorption coefficients of the ionisation gas for the said qualities. X-rays from source 4 are confined to a beam 5 which passes through ionisation chambers 1, 2 and an absorber 3. The difference in ionisation currents in the chambers is applied to the input resistor 9 of an amplifier 8 for dose rate indication on a meter 7, or, alternatively to an integrating condenser to determine total dose. This difference current is made proportional to X-ray intensity for two X- ray qualities by choosing the distance between electrodes 11 and 14, d 1 , and 12 and 17, d 2 , so that [α 1 (α 2 d 2  - d 1 )]/[α 2 (α 1 d 2  - d 1 )] =Á 1 /Á 2 , where α 1 α 2  are the transmission coefficient of the filter and Á 1 ,Á 2  the mass absorption coefficient of the ionisation gas at the two qualities. The device may be used to monitor X-ray photographic exposures or determine the dose absorbed by a patient.
Patent GB-1391952-A (GB)
Title: Data processing system with power supply
IPC: H02H7/20
Filed: 1973-01-26
Abstract: 1391952 D.C.-D.C.-converting RAYTHEON CO 26 Jan 1973 [7 Feb 1972] 4189/73 Heading H2F A data processing system comprises data storage means, and data retrieval means and includes a power supply in the form of a D.C.- D.C.-converter of the pulse width modulated switching type, the switching cycle of this converter being synchronized with the operating cycle of the data retrieval means which is preferably a C.R.T. dot matrix display. The power supply in outline is shown in Fig. 2, and has two inputs, a first for a regulated d.c. voltage and the second for a synchronizing clock input which is derived from the operating clocks of the data processing system. This pulsed input is applied to a monostable and Schmidt-trigger arrangement 210 to derive a square-wave signal of mark/space ratio of approx. 6. The circuit 210, depicted in more detail in Fig. 6 (not shown), is responsive to external synchronizing pulses to trigger the monostable, only if they lie in a discrete time period after the recovery of the monostable and before a triggering pulse is emitted by the Schmidt trigger, otherwise the triggering is done wholly internally. The synchronized output from circuit 210 is differentiated, amplified and limited at 104 where the output is applied to the base of transistor 520 and to the base of main switching transistor 440 through transformer 444. The transistor is thus turned "on" for relatively long periods and "off" for relatively short periods, the cycle time being, e.g. 64 msecs. The collector voltage at transistor 440 rises and is clipped at a value of e.g. 550 volts in the "off" periods by a Zener diode and diode series circuit 130, 129 in parallel with a capacitor 132 in series with a secondary winding of output transformer 216, and falls to, e.g. 140 volts in its "on" periods. The resulting waveform at secondary 122 consists of longer periods, e.g. of a steady +35 volts, and pulses of larger negative voltage. The positive voltage output is rectified at 120 and smoothed at 132 to be applied to the several loads in operation. The regulated D.C. input is derived from an unregulated source by a translator D.C. chopper device which is regulated by a feedback system. Suitable overcurrent and over-voltage protection circuits are employed and an auxiliary D.C. source employed in the event of operation of these circuits. The rectifier for producing the unregulated D.C. from an A.C. input is shown at 202, Fig. 5. A diode full-wave bridge 320-326 is provided and if the input is 230 volts, the switch 31873 in the position shown. If a 115 volt input is used, the switch is changed to take out diodes 322, 326 from the circuit and the remaining diodes together with capacitors 329, 330 provide a full-wave rectifying and voltage doubling circuit.
Patent GB-1309398-A (GB)
Title: Drill string section and a shank for a drill motor
IPC: E21B19/20
Filed: 1970-01-29
Abstract: 1309398 Drill pipe couplings GARDNER DENVER CO 8 June 1970 [3 Dec 1969] 4309/71 Divided out of 1309397 Heading F2U [Also in Division E1] Both ends 89, 94 of drill pipe sections 182 and one end of a shank of a drill motor are provided with multiple splines 144, 190 for interengagement with splines on the gripping means of a rotary breakout mechanism (see Specifications 1,309,397 and 1,309,399 in Division E1).
Patent GB-573764-A (GB)
Title: Improvements in hand propelled vehicles such as baby carriages
IPC: B62B5/02
Filed: 1943-03-17
Abstract: 573,764. Perambulator &c. suspensions.. BLOCH, A., and ARONS, G. R. March 17, 1943, No. 4335. [A Specification was laid open to inspection under Sect. 91 of the Acts, Aug. 11, 1943.] [Class 108 (ii)] In a hand-propelled vehicle, such as a baby carriage or invalid's chair, arms 17, 18, Fig. 1, of unequal length depending from the front and rear wheel axles or journals 15, 16 are pivotally connected by a rod or rods 19 upwardly inclined from the rear to the front axle, the arrangement being such that when the front wheels meet an obstruction, such as a curb 24, and the vehicle is still pushed forwardly, the pushing force is transformed into a pulling and lifting force by movement of the arms into the positions shown in broken lines. Figs. 3, 4 show a baby carriage in which the body 25 is hung on springs 35 rigidly secured to housings for bearings through which pass the axles 29, 31, the wheels being mounted on the cranked ends of the axles. The handle 40 may be mounted on the body or connected with the springs 35 or axle 31. In a modification, each axle consists of a central tubular part fixed to the springs 35 and separate, cranked, wheelcarrying end parts rotatably mounted in the fixed part, so that each wheel is independently mounted. The Specification as open to inspection under Sect. 91 comprises also (1) a modified form of the construction shown in Fig. 1 in which the arm 18 is dispensed with and the rod 19 pivotally connected to the axle 16; and (2) a construction in which each wheel is mounted on the outer ring of a ball &c. bearing, the inner ring being fixed to the end of the axle. This subject-matter does not appear in the Specification as accepted.
Patent GB-594786-A (GB)
Title: Improvements in scanning assemblies
IPC: H04N3/08
Filed: 1945-02-21
Abstract: 594,786. Television receivers. SCOPHONY, Ltd. Feb. 21, 1945, No. 4415. Convention date, Feb. 24, 1944. [Class 40 (iii)] A scanning assembly for a television receiver comprises a rotatable mirror polygon 3, each face of which is caused to operate to scan more than one line on the receiving screen 6 before the next reflecting face comes into operation by means of a device 7 comprising a pluralityof fixed mirrors located in the light path between the mirror polygon and the screen. As shown, light from a source 1 modulated by a device 2 which may be as described in Specification 439,236 falls on to a mirror polygon 3. The light reflected from one face of the polygon passes over the device 7 which comprises two inclined mirror surfaces and light from the device 7 is reflected by the slow speed frame scanning drum 5 on to the screen 6. The light reflected from one face of the rotating drum 3 falls just on to the left-hand mirror of device 7 and as it passes over the mirror causes a single line to be produced on screen 6. The light then falls upon the right-hand mirror of the device which is so adjusted that the further scanning line produced on screen 6 would be coincident with the first line but for the rotation of mirror drum 51. The next face of the mirror drum 3 then comes into operation to produce a further set of two scanning lines. The system described normally includes lenses in the light path (which are not shown in the Figure), but certain of the functions of these lenses may be performed by the device 7 by constructing the device of mirrors of suitable optical curvature. The Specification as open to inspection under Sect. 91 comprises also means for receiving colour television, a rotating disc containing colour filters being placed in the light beam between the devices 2 and 3. This subjectmatter does not appear in the Specification as accepted.
Patent GB-184769-A (GB)
Title: Improvements in and relating to motor starters and circuit controllers
IPC: H02P1/04
Filed: 1922-02-15
Abstract: 184,769. Burke, A. W. Aug. 13, 1921, [Convention date]. Void [Published under Sect. 91 of the Act]. Controllers, multiple rocking bar.-Relates to motor-starters comprising a starting-switch and a separate running-switch with means for ensuring their operation in proper order, as in the starting of split - phase motors. A starter constructed according to the invention is shown in Fig. 1 in the initial condition with both switches open, and in Fig. 5 in the normal working condition with the running-switch closed and the starting-switch open. The running- switch consists of two separately movable contact members 14, 12 mounted on separate pivots 5, 7 and having the contact 12 moved into the path of the contact 14 by the action of turning a manual spindle 22 to close the starting-switch 36. By turning the spindle back, a spring and toggle mechanism is allowed to move the member 14 so as to close the running-switch, the starting- switch being necessarily opened, by the action of a dead-centre spring 29 shortly after the running- switch is closed. An automatic overload trip is provided by a magnet 10 attracting an armature 9 attached to a detent 32 which releases the contact member 12 from circuit-making position. The sensitiveness of the overload release is temporarily decreased by swinging the magnet away from the armature during the first stage of the closing action. For starting a split-phase induction motor, the switch members 36, 14 are respectively connected to the terminals of the starting and running windings 45, 46, Fig. 6. For direct-current motors, the switch member 36 is connected to a starting-resistance and is opened during starting.
Patent GB-547079-A (GB)
Title: Improvements in or connected with winches
IPC: B66D5/32
Filed: 1941-04-04
Abstract: 547,079. Winches. FISHLEIGH, J. A. April 4, 1941, No. 4522. [Classes 78 (iv) and 78 (v)] A winch fixed to the front of a vehicle for hauling up on to, and lowering from, the vehicle any desired machinery, implements &c. consists of a drum 4 mounted on a shaft 3 journalled in two side frames 2 bolted &c. at 2b to the vehicle body &c. On one side of the drum is a ratchet wheel 6 and on the other side a brake drum 5. The ratchet wheel is engaged by a gravity pawl 8 pivoted to an operating lever 7 rockable about the shaft 3. A spring-biassed snap-over detent 9 can retain the drum in any position, or be thrown back into inoperative rearward location. A brake band 12 can be tensioned about the drum 5 by a lever 11.
Patent GB-1493957-A (GB)
Title: Portable multitrack magnetic tape recording and/or reproducing device
IPC: G11B25/06
Filed: 1975-02-03
Abstract: 1493957 Track-changing of magnetic heads MATSUSHITA ELECTRIC INDUSTRIAL CO Ltd 3 Feb 1975 [4 Feb 1974 (2)] 4578/75 Heading G5R A magnetic tape player and/or recorder has a handle 2, 3 for carriage thereof, the handle also operating as an actuator to effect track changing of a magnetic head 16. Movement of the handle shifts a plate 11, pivotally and slidably mounted on a chassis 8, against a bias spring 13 so that a step 11c on plate acts on a ratchet wheel having teeth A to rotate a cam wheel 10 whereby a cam follower 18 causes a track-changing movement of the magnetic head 16 with respect to a tape in a container, such as a cassette or cartridge. The handle is formed by a grip 2 rigid with one end of a rod 3 sliding in a sleeve 4 and having an opposite end engageable with a leaf spring abutment 14 on plate 11. A spring 5 which biases the handle upwards may be of such a strength that a considerable axial force is necessary on the handle to operate the trackchanging mechanism, thereby preventing inadvertent operation. A pin 7 through rod 3 engages in notches 4a in sleeve 4, whereby the mechanism can be operated by application to the handle of a small axial force simultaneously with rotation about the axis of rod 3, pin 7 engaging with inclined walls of the notches 4a so that such rotation causes axial movement of the rod and handle. Movement of the handle may also cause operation of a power supply switch. A disc (61), Fig. 3 (not shown), rotates with the cam wheel 10 so that an appropriate one of the track number indicia (62) on disc (61) appears at a window (63), Fig. 1 (not shown).
Patent GB-1470931-A (GB)
Title: Tool for gripping and relatively rotating two pipes
IPC: B25B21/00
Filed: 1975-02-04
Abstract: 1470931 Screwing up and unscrewing pipes VARCO INTERNATIONAL Inc 4 Feb 1975 [2 May 1974] 4664/75 Heading B3N A tool for joining or separating screwthreaded pipes 12, 13 comprises two gripping assemblies 18 and 19 one of which (or as shown both) is power-actuably displaceable (by units 21, 22) relative to the other to relatively rotate the pipes 12 and 13. Each assembly comprises two jaws 23, 24 or 71, 72 hinged together and interfitting guide elements, semicircularly extending dovetail guides 129, 132, Fig. 4, on the jaws guide the jaws of one assembly for rotary movement relative to the corresponding jaws of the other assembly in both of two opposite directions. As shown, the jaws of each assembly have radially movable die structures in the form of two pairs of die elements 48, 49 each pair movable by pressure fluid via pistons and cylinders 52, 53 and the corresponding cylinders of each structure are connected in parallel by hoses (67, 68, Fig. 10, not shown). Fixed die elements 50 are also provided. Each of piston and cylinder units 21, 22 has the cylinder end connected to the body of a jaw of one assembly and the piston end connected to the hinge connection of the other assembly. Spring-loaded latches 32 (and 80, Fig. 5, not shown) are used for locking the assemblies in the closed position. Jaws 71, 72 on lower assembly 19 have stops 120 engaged in guide slots in a supporting plate 79, Fig. 6, on which the jaws can slide, carried by support member 113 having an adjustable pivotably mounted arm 111 by which the tool is supported on drilling cable 17. In a second embodiment Fig. 13, for horizontal pipes, the tool is supported by a frame 137 which also retains the assemblies together axially and is fixed to plate 79. Further retaining means 138 comprises bars fixed to the jaws of one assembly and engaging surfaces on the jaws of the other assembly (Fig. 15, not shown). The jaws may be opened and closed by tag line 145.
Patent GB-898443-A (GB)
Title: Engine cooling means
IPC: F01P7/04
Filed: 1958-08-13
Abstract: 898,443. Cooling cylinders. EATON MANUFACTURING CO. Aug. 13, 1958 [Aug. 26, 1957], No. 4665/62. Divided out of 898,441. Drawings to Specification. Class 7(2). [Also in Group XXIX] The subject matter of this Specification is substantially identical with that described in Specification 898,441 but the claim is directed to means for cooling an engine comprising first and second members constituting an hydraulic coupling having the features described in the above-mentioned Specification, the second member providing a support for a fan.
Patent GB-198018-A (GB)
Title: Instrument for detecting and investigating emanations proceeding from substances
IPC: A61B5/0432
Filed: 1922-02-17
Abstract: 198,018. Boyd, W. E. Feb. 17, 1922. Medical treatment, indicating; diseases, diagnosing electrically.-Emanations, believed to be small ether wave effects proceeding from animal, vegetable, or mineral substances, for example, from a drug or a drop of blood or saliva, are detected and investigated as regards type and intensity by apparatus comprising an electrical circuit containing a calibrated inductance coil 6 continuously variable by a contact sliding along the wire, a detector of electrical oscillations, and a terminal detector consisting of metal plates 3, 4 insulated from one another and relatively movable, one plate 3, adjacent to which the specimen under test is placed, being connected to earth or to a body capable of absorbing electrical energy. The inductance comprises a coil 6 on a rotatable cylinder co-operating with a contact on an arm, 7 carried by a rotatable screw spindle 8, the cylinder and spindle 8 being geared together so that the contact slides continuously along the wire when the handle 9 is rotated and the inductance in circuit being read on scale 11 and vernier wheel 20. The circuit connection to the contact is made through a conducting strip 13 and a contact 12 on the arm 7. A human being may be employed as the detector of electrical oscillations, the lead 18 from the strip 13 being connected to a plug 19 in a head bandage and the lead 23 from the plate 3 to foot plates 14, 17 connected together and if desired to earth. Sounds produced by tapping the abdomen or thorax are observed when the human being is in a magnetic field at right angles to the plane of sight, for instance is facing east or west in the earth's field. A variable condenser mav be placed in series with the lead 18. The intensities of emanations are investigated by separating plate 3 from plate 4 until observations cease, and the type of emanations are identified from the value of the inductance at which observations are made. By comparing emanations from an unknown substance with those from known specimens, the chemical form of a substance may be investigated and an analysis carried out. The specimen may be a drug, or a drop of blood or saliva of a patient placed in a receptacle 1 clipped to the plate 4 by means such as a rubber band, the suitability of a drug for a patient being determined by comparison of the emanations from the drug and blood or saliva.