baber/WOPTO huggingface dataset:
Patent GB-438553-A (GB)
Title: Improvements relating to machines for cleaning and polishing metal
IPC: B24D99/00
Filed: 1934-10-26
Abstract: 438,553. Polishing strip or sheet metal. WINSTANLEY, H. M., Murdoch Works, Cotteridge Road, King's Norton, Birmingham. Oct. 26, 1934, No. 30695. [Class 60] In apparatus for polishing strip or sheet metal of the kind in which the metal is drawn through a number of pairs of jaws a, g faced with pads b, h, the upper jaw or pad carrier g is mounted so that it may be swung away from the fixed lower jaw a in a direction substantially perpendicular to that of the movement of the metal, in order to load or unload the apparatus. In the construction shown, the jaw g is mounted with a degree of float by means of slotted lugs u on a counterweighted lever f pivoted at x. The upper jaw is held in operative position by a loop fastener k which engages over the end of the lever, and is carried by an eccentric pin rotated by a lever m to draw the end of the lever down. The jaw g is pressed on to the work by a screw s mounted in the lever f. In a modification, the counterweight, which raises the arm f when it is released, is mounted on a separate pivoted arm connected by a link to the arm f.
Patent GB-1061243-A (GB)
Title: Semiconductor devices
IPC: H01L21/312
Filed: 1965-07-19
Abstract: 1,061,243. Semi-conductor devices. SIEMENS-SCHUCKERTWERKE A.G. July 19, 1965 [Aug. 19, 1964], No. 30695/65. Heading H1K. A semi-conductor device comprises a monocrystalline semi-conductor body having a PN junction which emerges at the surface of the body, the surface of the body being covered with an oxygen containing layer and a silicone layer containing alizarin in the region of the emergent PN junction. A molybdenum plate 3 has fixed thereto an A1 electrode 4 to which is soldered a weakly P-Si body 2, the upper face of which has an Sb-Au electrode 5 alloyed thereto giving an Si-Au eutectic. A strong P-zone 6 is produced by recrystallization whilst an N zone 7 is provided giving a PN junction 9. An oxygen-containing surface layer 12 is produced by treatment with HNO 3  + HF vapour or by anodic oxidation in aqueous HF. A silicone lacquer 13 containing alizarin is applied to the surface to cover the PN junction at the surface whilst the rest of Si body has a dried oxygen-containing layer 12a and an alizarin-free silicone lacquer 14. The alizarin layer 12 is said to stabilize the absorption of positive ions in the surface layer 12, and produces an inversion layer 15. The surface of the body 2 may be electrolytically treated with aqueous boric acid prior to the application of the layers. The " dried " layer 12a is produced after application of layer 13 but before application of layer 14 by heating the device.
Patent GB-488149-A (GB)
Title: Improvements in conveyor systems
IPC: B65G51/42
Filed: 1937-11-09
Abstract: 488,149. Conveyers. POLLAK, J. E. (Telephon-Apparat-Fabrik E. Zwietusch & Co., Ges.) Nov. 9, 1937, No. 30756. [Class 78 (i)] In an automatic central exchange station for branched conveyer systems for the selective connection of the incoming and outgoing conveyer tracks, the switches are controlled positively by means independent of the destination indication of the containers and in accordance with their setting permit the emergence of a container from an incoming conveyer track if the switch position corresponds with the destination indication of the container. Containers 20, 21<1> transmitted through the tubes 1<1> a and arriving simultaneously at the control stations 4, 4<1> are arrested by the detents 21 with the fingers 22 of the stations in engagement with the destination indicators 23, 24. The detents are not withdrawn by their electromagnets 3<1> until the pivoted switches 7<1> are positioned over the inlets 14<1> of the tubes 8<1>, 9<1> corresponding with the destination indicators. Each switch is moved from inlet to inlet against the action of a spring 18 by a pawl 16 driven by the armature 11<1> of an electromagnet 12<1> supplied with current by the constantly rotating disc 15 of an interrupter. The pawl 16 engages a toothed segment 17 attached to the switch, and in order that the switch may remain over an inlet for a certain time, the segment is engaged also by a pawl 19 controlled by an electromagnet 19<1> supplied with current by the disc 15<1> of the interrupter. When a switch is positioned above an inlet a contact 25 is closed and if the circuit is completed by the indicator 23 or 24, the corresponding electromagnet 3<1> is energized and the container is released. Several tubes 1<1>a may terminate at each control station, but in this arrangement only one container may be released at a time.
Patent GB-1419418-A (GB)
Title: Fault detecting circuit
IPC: H02P1/40
Filed: 1973-06-28
Abstract: 1419418 Polyphase fault detecting circuit; control of AC motors GENERAL ELECTRIC CO 28 June 1973 [30 June 1972] 30773/73 Headings H2J and H2K A fault detecting circuit for detecting deviations from correct operating voltage and current sequence in a threephase electrical system comprises a first subcircuit 20 in which the voltage between lines 1 and 2 is added vectorially to the voltage between lines 2 and 3 advanced by 60 degrees to give a signal which is above the nominal line-to-line voltage in correct operation, but equal to or less than the nominal line-to-line voltage in fault conditions, and a second subcircuit 30 in which the current in line 1 is added vectorially to the current in line 3 advanced by 60 degrees to give a zero signal in correct operation but an output signal in fault conditions. The output signals from these two subcircuits are fed to a level detector 40 which is in the form of a known unijunction transistor circuit which gives an output in the form of pulses in correct operation but no output under fault conditions. A trip circuit 50 receives the output of the level detector and maintains contact 19 closed as long as there is an output signal. If there is no output signal from the level detector, contact 19 opens and contactor coil 18 is de-energized to open contacts 15, 16, 17 and cut off the supply to the load which may be a synchronous or asynchronous threephase motor 13. Further if there is no output signal from the level detection it is not possible to switch on the supply to the motor. The trip circuit may incorporate a manual reset control or an auxiliary circuit which will provide a preset number of attempts to switch-on. Current transformers CT1, CT2 supply current to the second subcircuit 30. Incorrect operation of the trip circuit is prevented by a current interrupter.
Patent GB-683030-A (GB)
Title: Improvements in or relating to change speed gears
Inventor: FRYE JACK
IPC: F16H3/16
Filed: 1949-12-01
Abstract: 683,030. Change-speed gearing. VICTORIA MACHINE TOOL CO., Ltd., FRYE, J., and SEIDEL, A. Dec. 1, 1950 [Dec. 1, 1949], No. 30853/49. Class 80 (ii). In a change-speed gear with aligned input and output members 3, 1, reduced drive is obtained via a gear 4 splined on the member 3, a double lay-shaft gear 7, 8 and a gear 5 splined on the member 1, while direct drive is obtained by moving both gears 4 and 5 axially so that they disengage from the gear 7, 8 and so that clutch dogs 9 on the gear 5 engage dogs 10 on the member 3. Gear 5 is moved by a fork 16 operated by an arm 20, and the gear 4 is constrained to move axially with the gear 5 by blocks 23, 24 secured to the latter and having projections engaging an annular groove 22 in a part 21 of the gear 4. As shown, the member 1 is the vertical spindle of a drilling machine, the member 3 being driven at various speeds from a motor through stepped belt pulleys.
Patent GB-287429-A (GB)
Title: Windows
IPC: E06B3/50
Filed: 1927-11-19
Abstract: 287,429. Ormsby, E. A. Nov. 19, 1927. Pivoted-sliding windows; rattling, preventing; sashes balanced by springs.-The lower half-sections of the guides of a two-sash sliding window are hinged at 25, 65 to the sill, Fig. 3, and adapted to be rotated with the sashes into the room to facilitate cleaning. Each sash is balanced by spring-controlled pinions 35 carried on a shaft in the recessed lower sash-rail, Figs. 3 and 9, and engaging racks 31 on the hinged guides. Sliding engagement between each sash and its guides is maintained by flanged plates 41 engaging recesses 42, Fig. 8, between the rack and guide. The meeting edges of the fixed and movables guides are bevelled and a sliding bolt 26 is provided on the movable guide of the lower sash, Fig. 6, which is adapted to lock same to the fixed guide. This bolt has a shank 30 and handle 28 attached thereto protruding through a slotted plate 29. When the bolt is retracted a bevelled end 30a of the shank presses a spring 58 into the recess 42, thereby preventing relative movement between the sash and guide. The two sections of the guide for the upper sash are engaged by a bolt and keeper 67, 68, Fig. 3. The sashes may be locked in the guides by a sliding dog 43, Fig. 9, adapted to engage the teeth of the pinion 35 and provided with a handle protruding through the sash, which handle is held by a spring on either side of a stop in the released or engaged position. The counterbalancing device is carried on a plate 630 secured to the bottom rail of each sash, and during fitting the pinions are locked with the spring at the required tension by a sliding bolt 660, Fig. 14, adapted to engage the teeth thereof; frictional engagement of the bolt by a spring prevents its accidental displacement. The lower sash is adjustably supported by a, stay 50 and rack 57 when inclined into the room and the upper sash is supported on the lower. The meeting rails of the sashes have bent plates 72, Fig. 14, attached thereto which engage to stop draught when the sashes are closed.
Patent GB-1433407-A (GB)
Title: Air conditioning system and method for controlling the same
IPC: F24F3/044
Filed: 1973-06-29
Abstract: 1433407 Air-conditioning systems AI McFARLAN 29 June 1973 [29 June 1972] 31189/73 Heading F4V An air-conditioning system includes a highpressure duet 8 for passing air conditioned at 4 to ducts 16, 18 disposed in zones 10, 12. Each duct 16, 18 is connected to duct 8 by a pressure reduction box 20, 22 which comprises a baffle 35, linkages 34 and a control motor 33. Adjustable diffuser elements 14 having a baffle 11 and a motor 13 are disposed in ducts 16, 18 to provide outlets for the conditioned air into the zones 10, 12. In zone 10, a single thermostat 24 controls all of the diffusers and also controls the pressure reduction box 24. When cooling is required, thermostat 24 reduces the pressure in the pneumatic control lines 25, operating the motors 13 and 33 to partially close the diffusers and to decrease the air flow from the box 20 into the duct 16. The net result is to provide a stable condition in which a reduced amount of air is supplied to zone 10 and a stable pressure is maintained in duct 16. In zone 12, each of the three diffusers 14 has its own thermostat 26. A controller 30 is connected through a peumatic control line 32 to box 22, and acts to pass on to box 22 the maximum pneumatic control pressure received from the various thermostats. In both zones 10 and 12, the closing of the throttle elements 35 in the respective boxes 20, 22 is stopped, for example at a pneumatic pressure of three pounds, so that the box has a constant setting below that pneumatic pressure while the diffusers continue to close down. The diffusers may be closed down completely at minimum cooling load conditions so that the only air supplied to the zones is that delivered by the outlets 7 of an air treating unit 5. The unit 5 supplies a constant volume of air at a controlled temperature through a number of high pressure, main distribution ducts 6 to the interior of the building.
Patent GB-700107-A (GB)
Title: Improvements relating to circuit arrangements for electrical discharge tubes
Inventor: SLACK JOHN KENNETH
IPC: H02M1/02
Filed: 1950-12-22
Abstract: 700,107. Pulse generating circuits. METROPOLITAN-VICKERS ELECTRICAL CO., Ltd. Sept. 28, 1951 [Dec. 22, 1950], No. 31225/50. Class 40 (6) A circuit for producing triggering pulses for a discharge tube comprises a spark gap which is adapted to initiate the pulse and a resistancecapacitance network which damps out any unwanted oscillations which may be set up so that reversal of the current or voltage output of the circuit is obviated. The Figure shows a pulse generating circuit in which a capacitor C1 is charged from a voltage source having terminals S and is periodically discharged through the primary winding of a transformer T when trigatron N is fired. The resultant pulse produced in the secondary winding of the transformer is applied to the striker electrode of an ignitron G the resistor R2 damping out any oscillations in the secondary circuit and resistor R1 limiting the peak current flow.
Patent GB-755911-A (GB)
Title: Apparatus for controlling aircraft
IPC: B64C39/00
Filed: 1954-10-29
Abstract: 755,911. Controlling aircraft. ORAZI, P. Oct. 29, 1954 [Aug. 14, 1954], No. 31258/54. Class 4. In an aircraft supported and propelled by wings rotated about a common spanwise axis, rolling control is achieved by providing each wing 12, which is mounted on and rotated by a shaft 38, with a slot 16 extending through the wing and located chordally substantially at the centre of pressure axis. Plates 18 are mounted above and below the slot 16, each plate having arcuate slots 22 engaging fixed pins 24, and an extension 28 pivoted at 30 to a rod 32, both rods having connections 35 with an annular disc 36 moved spanwise by a forked arm 42. Such spanwise movement causes the plates 18 to move by interaction of the slots 22 and pins 24 in a direction to open or close the slots 16, thereby selectively altering the lift of one wing with respect to the other to roll the aircraft.
Patent GB-663877-A (GB)
Title: Apparatus for photographically reproducing originals in which the time of exposure is independent of the scale of enlargement
IPC: G03B27/72
Filed: 1948-12-02
Abstract: 663,877. Photographic, copying cameras. NAAMLOOZE VENNOOTSCHAP EXPLOITATIE MAATSCHAPPIJ QUOD BONUM. Dec. 2, 1948, No. 31274/48. Class 98 (i). Photographic copying apparatus of the kind in which the time of exposure is independent of the scale of enlargement is characterized in that the source or sources of light for illuminating the original are situated in the focal plane of the projection lens nearer to the original. When the copy is small or narrow, e.g. in a photographic type-composing machine, the lamps are carried on arms carried by the lens carrier and symmetrically offset from the optical axis. Apparatus for larger copy, Fig. 2a, has a camera back 1 connected by bellows to a lens board 2. Sleeves 9 are trunnioned in the forked ends of arms 10 on the board 2. Preferably, the distance between the forked ends of arms 10 is equal to half the width of the copy. Levers 8 are pivoted at 7 to the camera back 1 and slide in sleeves 9 having extensions 5 carrying lamps 6, which are mounted to lie in the plane perpendicular to the optical axis and passing through the focus F of the lens, and to be directed towards the copy 4, in all positions of the lens. In another form, applied to a camera with a reflecting prism in the optical path, the lamps are mounted on the free ends of rods, each pivoted to a point fixed with respect to the lens and guided between rollers on members projecting from the copy holder, by means of linked levers which always direct them towards the copy.
Patent GB-154461-A (GB)
Title: Improvements in or relating to walls of concrete and the like
IPC: E04G11/18
Filed: 1919-12-13
Abstract: 154,461. Forrester, G. H. Dec. 13, 1919. Reinforced-concrete walls.-In hollow concrete walls cast in situ, tubes d made of concrete or cement and with bars g projecting laterally are placed between and space the mould plates a and are left embedded in the concrete wall. Temporary bolts c supporting the plates a are passed through the bars g, and the ends of the bars are connected by wall reinforcing bars j. The inner mould plates a are spaced by distance pieces f, and the outer plates a are supported by corrugated plates and bars b. When the mould plates are removed, the pairs of bars g are connected by permanent bolts inserted in the tubes. Specification 156,819, [Class 20 (ii), Buildings and structures, Miscellaneous accessories &c.], is referred to in the Provisional Specification.
Patent GB-756134-A (GB)
Title: An improved variable-pitch propeller for airplanes or other flying machines
IPC: B64C11/40
Filed: 1954-10-29
Abstract: 756,134. Variable-pitch propellers. RATIER AVIATION-MARINE. Oct. 29, 1954 [July 28, 1954], No. 31336/54. Class 114. Each blade in a variable-pitch propeller is mounted in a helical bearing 15, Fig. 1, in a socket 1a on a central hub 1 and carries at its base a gear 25 rigid with it and adapted to engage a rack 31, Fig. 5, secured at one end to a single-acting piston 40 working in a chamber 57 containing ahead of the piston hydraulic fluid provided by a pump 49 driven by the propeller shaft through planet wheels 48 running on a stationary sun wheel 47, a centrifugal governor 67 between the pump and the chamber 57 controlling the increase or decrease of pressure in the chamber to lower or raise the pitch of the propeller blades. Fig. 5 shows the blade at zero pitch with hydraulic fluid locked in the chamber 57 by closure of a release passage 60 by a land 67a on the governor 67 and a pressure passage by a valve 66 in position 66a. The governor 67 moves outwards, against an adjustable spring 68, under centrifugal force until at a speed slightly exceeding the desired one, the land 67a partially clears the passage 60 opening the chamber 57 to a low-pressure chamber 39a communicating by an orifice 54 with the suction chamber 39b of the pump. The centrifugal force of the rotating blades draws them outwards along their helical mountings increasing their pitch and rotating the gear 25 to displace the rack 31 and piston 40 away from the blade. When equilibrium is established, the governor land 67a moves inwards to open the passage 60 and close the passage 61. Pressure built up by the pump lifts the valve 66 to open a release. passage 65 to the chamber 39a.
Patent GB-1380355-A (GB)
Title: Oculometers
IPC: G02B27/40
Filed: 1972-07-05
Abstract: 1380355 Oculometer HONEYWELL Inc 5 July 1972 [6 July 1971] 31367/72 Heading H4D  In an oculometer, determining the x and y co-ordinates of the attitude of the eye ball 12 an automatic focusing system is added to ensure that the image of invisible light source 10 is correctly focused on the eyeball. The oculometer system comprises an image disector 16 receiving the source image, and scanning said image in a circular path by means of orthogonal, sine/cosine x, y deflection signal from drives 63, 54. Synchronous detection of the disector output given the required x and y attitude coordinate components at 61, 52. The focusing system comprises an apertured plate 70 vibrated in the x directive and positioned in the path of the light from the eyeball image to the photocathode of the disector such that when the image is focused on the photocathode the vibrating aperture makes no visible effect on the image, and when the image is out of focus, the aperture gives a component in the output of the synchronous detector at the vibration frequency and with a phase indicative of the sense of the out-of-focus. Such output produces an indication at 86 and is used to automatically adjust the focus of the image.
Patent GB-601644-A (GB)
Title: Pulse communication system
IPC: H04B14/02
Filed: 1945-11-21
Abstract: 601,644. Pulse modulation. MARCONI'S WIRELESS TELEGRAPH CO., Ltd. Nov. 21, 1945, No. 31407. Convention date, Jan. 5, 1944. [Class 40 (v)] In a communication system, time-modulated pulses are used, the duration of each pulse being substantially equal to the time interval between it and the succeeding pulse. In the transmitter described, a 100 kc/s. oscillator 11 is frequency modulated by the modulating source 13 and mixed with the output of a 110 kc/s. oscillator 15 to produce a frequency-modulated 10 kc/s. output from the converter 14. This is converted into a square wave in circuit 16, which may be a flip-flop pulse generator or a limiting amplifier. The square wave modulates the radio transmitter 17, 18. At the receiver, the demodulated pulses from a superheterodyne circuit are sliced between two predetermined amplitude levels to remove noise and converted to a corresponding frequency-modulated sine wave by passage through a band pass filter. The modulating voltage is recovered in a known discriminator circuit. U.S.A. Specification 2,276,565 is referred to.
Patent GB-372696-A (GB)
Title: Improvements in manoeuvre-signalling devices for use on vehicles
IPC: B60Q1/36
Filed: 1931-11-14
Abstract: 372,696. Road - traffic signals on vehicles. BOSCH AKT.-GES., R., 4, Militõrstrasse, Stuttgart, Germany. Nov. 14, 1931, No. 31562. Convention date, Nov. 24, 1930. [Classes 40 (i) and 118 (ii).] In a manoeuvre - signalling device which may be built into a pillar of a vehicle frame means are provided to enable the pivoted signalling arm to be unlocked from the outside. The arm c is actuated by an electromagnet k, and an aperture m is provided in the front wall of the casing through which a pin or the like may be inserted to press down a spring- held pawl e and so release the arm c, which may then be gripped by hand and drawn fully out of the casing.
Patent GB-1175634-A (GB)
Title: New Phosphoric Esters and Compositions Containing them
Inventor: SAULI MICHEL
IPC: C07F9/653
Filed: 1968-07-03
Abstract: 1,175,634. Pesticides containing phosphoric esters. RHONE-POULENC S.A. 3 July, 1968 [3 July, 1967; 8 April, 1968], No. 31713/68. Heading A5E. [Also in Division C2] An insecticidal or acaricidal composition contains at least one phosphoric ester of the general formula: wherein R represents a hydrogen atom, or an alkyl or cycloalkyl group containing at most 5 carbon atoms, or a phenyl group unsubstituted or substituted by one or two halogen atoms, and R<SP>1</SP> represents an alkyl group containing at most 4 carbon atoms, in association with one or more diluents or adjuvants. The diluent may be solid or liquid and the composition may be in the form of a suspension, emulsion or solution in organic or aqueous organic media.
Patent GB-520905-A (GB)
Title: Improvements in extending tables
IPC: A47B1/05
Filed: 1938-11-03
Abstract: 520,905. Tables. TARR, R. J. C. Nov. 3, 1938, No. 31903. [Class 52 (iii) ] An extending leaf table has the underside of the top 1 fitted with or resting on a block or blocks 2 resting on the runners 3 of extension leaves 4 the length being sufficient to allow a gap between the table top and leaf. A pad 7 under the comers of the table top prevents rocking. Runners 3, Figs. 1 and 2 (Prov.), are arranged to rest in apertures in a guide 5 and table rails 6. On pulling the extension leaf it rises until, when its inner edge clears the outer edge of the top, the leaf is level with the top member; the top being simultaneously raised by the blocks 2. A groove 8 is formed in each runner into which the block 2 falls when the leaf is drawn out. Each block 2, Fig. 3 (Prov.), is provided with a wire lever 11. which, when the leaf is withdrawn, rests on a strip of wood 12 as shown in dotted lines Fig. 1 (Prov.). To close the table the leaf is withdrawn a little beyond its open position so that the lever 11 falls and a groove 13 on the strip 12, on pushing the leaf in, the table top is raised sufficiently. to allow the block 2 to clear the recess 8. In a modification Figs. 2 and 5 (Comp.), the blocks 2 are hinged at 18 to fixed bars 16 on the .table by a U-shaped wire 17, one leg of which carries a roller 19, and a depending lever 20. On opening the table is raised by a pin 23 engaging the under side of the runner 3 until the leaf is fully extended, when the roller 19 will rest in a slot 22. On closing, the leaf is first withdrawn slightly when the lever 20 will engage a pin 21, turning the block 2 to raise the table top 1 and withdraw the roller 19 from the slot 22 to allow the return of the leaf 4.