baber/WOPTO huggingface dataset:
Patent GB-275613-A (GB)
Title: Manufacture of azodyestuffs
IPC: C09B29/20
Filed: 1927-07-28
Abstract: 275,613. I. G. Farbenindustrie Akt.- Ges. Aug. 5, 1926, [Convention date]. Addition to 274,128. Azo dyes; lakes.-Dyestuffs similar to those described in the parent Specification are obtained in substance, on a substratum, or on the fibre bv coupling diazotized 1 : 3-dimethyl-4-amino-2-halogenbenzenes or diazotized 1 : 3-dimethyl-6-alkyl-4- amino-2-halogenbenzenes with 2 : 3-oxynaphthoic arylides. In examples cotton is padded with the 4-chlor-2-toluidide of 2: 3-oxynaphthoic acid dissolved in caustic soda solution with the addition of sodium turkey red oil, and developed with diazotized 1 : 3-dimethyl-4-amino-2-chlorbenzene or with diazotized 1:3: 6-trimethyl-4-amino-2- chlorbenzene; the resulting dyeings are bluishred. fast to kier-boiling and to chlorine. Specifications 6379/12 and 17279/13, [Class 15 (ii), Dyeing. Processes. &c. for]. are referred to. 1 : 3-Dimethyl-4-amino-2:chlorbenzene is made from 4-nitro-vic-m-xylidine by replacing the amino group by chlorine bv Sandmeyer's reaction. and reducing the product. 1:3: 6-Trimethyl - 4 - amino-2-chlorbenzene is made bv chlorinating 1:3: 6-trimethyl-4-aminobenzene in sulphuric acid.
Patent GB-393778-A (GB)
Title: Transmission mechanism for motor vehicles
IPC: B60K20/00
Filed: 1932-05-14
Abstract: 393,778. Facilitating changing speed. DENNIS BROS., Ltd., Woodbridge Works, and POPPE, E., Threegates, Guildown Road, both in Guildford, Surrey. May 14, 1932, Nos. 20112 (divided on 393,747), and 20111. [Class 80 (ii).] Transmission mechanism for motor vehicles includes servo-operated main and isolating clutches in casings 17, 30, Fig. 2, at opposite ends of the change-gear casing 32 and a valve for the servo cylinder 6 controlled manually through electromagnetic means. The valve is in a casing 2 secured across one end of the cylinder 6 with a through port 5. A union 19 connects to the atmosphere as by a port shown at 17 in Fig. 2 of the abridgment of Specification 393,776. A union 22, Fig. 3, connects to engine suction. The valve comprises a rod 9 with two pistons 10, 11 moving in separate cylinders 12. As shown, a spring 13 is holding the valve so that the piston 10 closes a port 23 connecting the main cylinder port 5 to suction. To cause the servo motor to make an operative stroke, an electric coil 7 is energized from a switch button, whereupon an armature 8 fast on the valve rod 9 is attracted towards the right of Fig. 2. This causes the piston 10 to uncover the port 23 connecting the main port 5 to suction and the piston 11 to close a port 15 which normally connects the main port 5 to the atmosphere through a casing 14 of the spring 13 and through ports 18 and the union 19. The main clutch releasing shaft 16, Fig. 2, is then operated through a link 33 and the isolating clutch through a cam lever 25 as described in Specification 393,776 aforesaid. The switch may be connected so as to close the throttle on releasing the main and isolating clutches so as to give a free-wheeling effect, or the switch may be closed by the accelerator pedal. The valve coil 7 should be connected to an engine control such as the ignition so as to be open when the engine is stopped. The isolating clutch may be constructed and arranged for operation with lost motion as described in Specifications 393,747 and 393,779.
Patent GB-270926-A (GB)
Title: Improvements in ornithopters
IPC: B64C33/00
Filed: 1926-08-16
Abstract: 270,926. Masters, C. Aug. 16, 1926. Ornithopters; wings, construction of; propelling. - A flying machine has two flapping wings driven by an engine and shaped, as shown in Fig. 7, with incurved parts at back and front near the shoulder. The wings are comparatively rigid at the front and flexible at the rear, and each comprises a covered framework formed of a stout front rib l, tapering towards the tip, rearwardly directed ribs m and lateral ribs. Stout rubber strands indicated by dotted lines are sewn into the covering fabric. Each wing is carried by a shaft l<5> pivoted to the body, the rear pivot being a cup d which allows a slight freedom. The wings are driven by an engine x, Fig. 4, on the shaft of which is an eccentric h, Fig. 6, engaging slots in levers h<1> fixed to the wings.
Patent GB-623194-A (GB)
Title: Improvements in hydraulic torque converters
IPC: F16H61/56
Filed: 1946-07-05
Abstract: 623,194. Torque converters. TENOT, A. L., LEMAITRE, R., and SOC. HYDRO-MECANIQUE. July 5, 1946, No. 20165. Convention date, Jan. 9, 1942. [Class 69 (ii)] A variable speed apparatus for transmission of power comprises a driving shaft 1, a driven shaft 2, a casing S, a transmitting liquid flowing in a closed circuit in the casing, an impeller, with blades P of variable pitch on its conical surface o<SP>1</SP>-x<SP>1</SP>, located in said circuit and attached to the driving shaft, and a runner, on the concial surface o<SP>2</SP>-x<SP>2</SP> of a turbine with adjustable blades T also located in said circuit and attached to the driven shaft. The pitch of the blades P is altered through the pinion e<SP>1</SP> and the toothed wheel r<SP>1</SP> on the shaft a<SP>1</SP>. Similarly the pitch of the blades T is altered through the pinion e<SP>2</SP> and wheel r<SP>2</SP> on the shaft a<SP>2</SP>. Reactor vanes r1<SP>1</SP> may be attached to the stator or casing S and may be adjustable.
Patent GB-651772-A (GB)
Title: Optical apparatus, particularly for the observation of objects moving in space
IPC: G01C1/02
Filed: 1946-07-05
Abstract: 651,772. Electric control systems. CONTRAVES AKT.-GES. July 5,1946, No. 20221. [A Specification was laid open to inspection under Sect. 91 of the Acts, Jan. 6, 1947.] [Class 40 (i)] [Also in Group XX] A mechanism by which the movement of a shaft 70, Fig. 4, is stored and later transmitted to a shaft 75 includes an electric motor 105 connected to a disc 106 on which rests a friction gear 108 slidable but not rotatable on a rod 107, connected by an electromagnetically-controlled coupling 111 to a differential gear 74 and by gears 112 to a screwed rod 109 having a nut 110 engaging the gear 108 as shown. The coupling 111 is initially de-energized so that the shaft 107 is connected to the differential gear 74 but is prevented from rotating by the friction-wheel 108. In operation the rotation of the shaft 70 is normally transmitted by the gear 74 to shaft 75 but manual operation of a contact 11 closes a relay SI, the contact s of which closes the circuit through a brake 76 which clamps the shaft 75 and also closes a circuit through the coupling 111 which disconnects the shaft 107. A holding circuit T for the relay s is also completed. Rotation is therefore transferred to the shaft 109 which causes lateral movement of the nut 110 and of the friction gear 108. On manually closing a switch 13 the circuits to the coupling 111 and clutch 76 are broken, whereby the shaft 107 is clamped to the shaft 75 which is once more free to move and the motor 105 is energized to rotate the shaft 107 through the disc 106 and wheel 108. This shaft in addition to rotation of shaft 75 causes rotation of the shaft 109 to move the nut 110 and gear 108 back to the central position, when the motor 105 is automatically switched off. In the modification shown in Fig. 8 a series motor 155 is continuously connected to a mains supply through a potentiometer comprising a resistance 156 and a contact 160 movable along a screwed rod 159 connected to the gear 112 of Fig. 4. The motor shaft 157 is connected to that half of the clutch 111 of Fig. 4 which is connected to the shaft 107. On operation of the contact 11 the drive of the shaft 70 is transferred to the rod 159 which moves the shaft 157 freely since the clutch 111 is disconnected. On operation of contact 13 the clutch 111 is operated to connect the shaft 157 to the shaft 75 and also drives the rod 159 until the contact 160 returns to the central position. The invention is applied to sighting telescopes (see Group XX).
Patent GB-989069-A (GB)
Title: Missile guidance system
Inventor: HAMMOND EDMUND BERKELEY
IPC: F41G7/24
Filed: 1954-07-09
Abstract: 989,069. Self propelled missiles. SPERRY RAND CORPORATION. July 9, 1954, No. 20225/54. Drawings to Specification. Heading F3A. [Also in Divisions G3 and H4] An aircraft which carries beam riding, air-toair missiles is controlled by the pilot so as to launch missiles at a moving target. The target is detected by the aircraft through a pulse radar having a conically swept beam. The missile rides within the beam, which has four quadrants distinguished from each other by a pulse sequence transmitted with the radar signals. The missiles have an ogive nose and cruciform wings and tail surfaces. They are provided with a proximity fuse, a warhead, a microwave receiver, a control servo system and a solid fuel motor. Specifications 621,836, 635,478, 767,831, 812,533, 834,520 and 989,070 are referred to.
Patent GB-972907-A (GB)
Title: Sealing device
Inventor: SHIRE RALPH JOHN
IPC: F01D11/04
Filed: 1963-05-21
Abstract: 972,907. Liquid seals. ROLLS-ROYCE Ltd. May 21, 1963, No. 20246/63. Heading F2B. A centrifugal liquid seal for a rotatable shaft 16 journalled within a bearing 17 comprises an annular member 30, 33 secured to the shaft and a static annular member 40 mounted about the shaft and extending as at 41 into an annular radially-inwardly facing trough 35 formed by the member 30, 33 so as to shield one side of the bearing from any hot gas, means being provided, operative throughout the rotation of the shaft, for supplying lubricating oil to the bearing and for causing the oil after its passage through the bearing to flow continuously through the trough to form a seal between the members 30, 33 and 40. The shaft 16 is that of an aircraft gas turbine engine. The member 40 is secured to an annular member 36 bolted to a hub portion 27 of an interior housing 23 secured to the engine casing by members 25, 26. The lubricating oil, after passing out of the bearing 17 as shown by arrow 52, enters through passages 53 into the trough 35 where under the influence of centrifugal force due to the rotation of the shaft it forms an annular well into which the fin 41 of the member 40 dips. The oil flowing from the trough 35 passes through the annular space 55 and is returned to a sump via holes provided in the hub portion 27 and the bearing outer race. The air being sealed is formed of low pressure air heated in its passage through the engine and entering the housing through apertures 23a and combining as at 50 air which has become heated after cooling the turbine and has passed through a seal 44, 45.
Patent GB-459868-A (GB)
Title: Improvements in or relating to electric circuit-breakers
IPC: H01H1/60
Filed: 1935-07-16
Abstract: 459,868. Liquid - break switches. REYROLLE & CO., Ltd., A., Hebburn-on- Tyne, ALLAN, A., Cragside, Ashleigh Grove, Tynemouth, and BLANCH, N. R., 155, Victoria Road West, Hebburn-on-Tyne. July 16, 1935, No. 20281. [Class 38 (v)] A circuit-breaker comprises a tank A containing insulating liquid, an arc control device D into which the movable contact H can project to make contact with a normally fixed contact therein, lead-in conductors G, G<1> for connecting the two contacts to the external circuit, and means whereby the arc control device and the normally fixed contact within it can be withdrawn from the tank independently of the movable contact and the lead-in conductors. In the arrangement shown, the arc control device D is mounted on an insulating bracket B<1> carried by a cover plate B which normally closes an orifice in the wall of the tank. The plate B is bolted to a flange C<1> on the end of an arm C pivoted on an external lug A<3> on the tank wall, so that the plate, and with it the arc control device D, can be withdrawn from the tank by rotating the arm C. The arm C may be made detachable, so that the same arm may be employed for a number of circuit-breakers. The lead-in conductors G, G<1> pass through insulating bushings F, F<1> supported by the rear wall A4 of the tank. The upper conductor G terminates in a butt contact G<2> normally engaging an external terminal D<1> on the device D, and the lower conductor G<1> has a sliding connection G<3> with the movable contact H. The arc control device consists of an insulating structure with vents D<2>, the arrangement preferably being such that the magnetic force exerted on the arc by the current flowing through the lead-in conductors causes the arc substantially to seal the vents, as described in Specification 435,308. The insulating structure may be built up of superimposed plates of insulating material or may be divided longitudinally into two or more parts held together by clamping devices as described in Specification 452,146.
Patent GB-148428-A (GB)
Title: Improvements in subaqueous sound producers and receivers
IPC: G01S1/72
Filed: 1920-07-10
Abstract: 148,428. Signal Ges. Nov. 5, 1917, [Convention date]. Addition to 147,939. Subaqueous audible signals; subaqueous transmission of speech.-In apparatus for receiving or transmitting subaqueous sound, the shallow chamber 4 interposed between the diaphragm 1 in contact with the water and the sound detector or producer proper, as described in the parent Specification, communicates through an opening b with a second chamber l<2>. In some cases the opening b may be closed by a diaphragm. The chamber l<2> may communicate through a tube with the ear, or sound produced for example by the voice may be led to the chamber l<2> through a tube, and is thence transmitted to the water through chamber 4 and diaphragm 1. The chamber l<2> may be formed to act as a resonator. In another form, the chamber l<2> is closed and contains the sound detector or producer. Fig. 3 shows a microphone m mounted within the chamber l<2> on a diaphragm r. By tuning the chamber l<2> and diaphragm 1 to the same tone, and varying the coupling effect by altering the volume of the coupling chamber 4, the apparatus may be made responsive to two frequencies lying more or less closely together. A series of additional chambers such as l<2> may be used.
Patent GB-433240-A (GB)
Title: Improvements in or relating to plate clamping mechanism for use in printing machines
IPC: B41F27/10
Filed: 1934-07-11
Abstract: 433,240. Printing-surfaces. HOE & CO., Ltd., R., 109, Borough Road, London.- (Hoe & Co., Inc., R.; 138th Street, New York, U.S.A.) July 11, 1934, No. 20384. [Class 100 (ii)] A forme cylinder having clamping-devices for engaging the ends of the printing-plates is provided with one or more additional devices for holding the plate from below at a point or points within the boundary of the plate. In one form, Fig. 3, the usual screw-operated end clamp 12 is provided with rods 15 to which are secured blocks 19 carrying spring-pressed tapered pins 17 which, when the clamp 12 is moved to clamping position, engage perforated lugs 18 on the underside of the plate 9. In another form, Fig. 8, wedge blocks 23 are secured to or formed integral with the underside of the plate 9 and, when the plate is clamped, engage with correspondingly shaped walls of members 24 secured to or integral with the cylinder. In a modification of this form, the wedge blocks are provided on the cylinder and the co-operating members on the plate. In a further modification one wall of the member 24 is slidably mounted and spring - pressed towards the other wall, and in a still further modification the wedge block is slidably mounted and can yield against the pressure of a spring. In the form shown in Figs. 23, 24, the block 33 is slidably mounted in guides 31 formed on the plate 9 and has a portion 34 engaging the walls of a wedge-shaped recess 36 in the cylinder. The block is retained in the guides 31 by a leaf spring 40 and is pressed towards locking position by a coil spring 37.
Patent GB-827415-A (GB)
Title: Improvements relating to the production of regenerated cellulose filaments
Inventor: TALLIS ERNEST EDWARD
IPC: D01F2/06
Filed: 1957-06-28
Abstract: According to the parent Specification, regenerated cellulose filaments are produced by extruding viscose, the cellulose of which has an average degree of polymerization of at least 400, at a salt point between 6 and 15, into an aqueous coagulating bath containing sulphuric acid together with zinc sulphate, the viscose containing between 0.5 and 10% by weight, based on the weight of the cellulose, of a polyethylene oxide of average molecular weight between 300 and 10,000, at a draw-off speed not substantially greater than that defined by the curve shown in Fig. 1 of the parent Specification, wherein the maximum permissible draw-off speed is plotted against the ball-fall viscosity of the viscose.  This process is now modified by effecting the extrusion at a temperature between 40 DEG  and 60 DEG C., whereby viscoses of relatively high viscosity can be spun at normal speeds.
Patent GB-335942-A (GB)
Title: Improvements in drying apparatus
IPC: F26B21/00
Filed: 1929-07-03
Abstract: 335,942. Gill, H. A., (Nichols Products Corporation). July 3, 1929. Small chambers; heating-fittings.-A drying chamber comprises a shell 3 and inner wall 4 forming a jacket through which steam is passed and in which it is heated such as by electric heaters 10. The material to be dried rests on a perforated tray 8 which is supported by the top of the jacket. The steam is injected at a point above the material through pipes 13 which are arranged between the heating elements and the inner wall, and is exhausted through an outlet 14 at the bottom of the chamber. The pipes 13 may be omitted, the steam passing through the jacket in contact with the electric heaters which are placed adjacent the inner wall. The jacket may comprise concentric cylinders, the steam entering the chamber through an opening at the top.
Patent GB-1142664-A (GB)
Title: Automatic superconducting pump
IPC: H01F6/00
Filed: 1967-05-03
Abstract: 1,142,664. Superconductor devices. UNITED STATES ATOMIC ENERGY COMMISSION. 3 May, 1967 [1 June, 1966], No. 20442/67. Headings H1K and H1P. A superconductor magnet coil is connected in parallel with a smaller inductor and fed with pulses from a power supply, the arrangement being such that the small inductor automatically switches between the superconducting and normal states to build up the magnetic field in the larger coil. As shown, Fig. 1, the magnet coil L 1  is connected in parallel with an inductor L 2  having a normal resistance of R 2 . The power supply comprises a transformer having secondary terminals a, b, and a resistor R 0 . When a step voltage is applied across a, b, the current Is increases at a rate determined by the inductances of L 1  and L 2  and divides between the coils in the inverse ratio of their inductances. The current through L 2  rises more rapidly than that through L 1  and when the critical current is reached L 2  switches to the normal state and the current through L 1  continues to rise. The voltage is removed after a suitable time, the current in L 2  drops below its critical value, L 2  becomes superconducting and forms a closed loop with coil L 1  in which a persistent current flows. The value of the persistent current can be built up by applying further pulses to repeat the switching cycle. The arrangement provides automatic rectification of the A.C. supply since the net state of the circuit is unaffected by voltage pulses of insufficient amplitude to produce the critical current in L 2 , so that it is merely necessary to select the shape of the primary current waveform to ensure that the negative secondary pulses are of low amplitude, Figs. 3 to 5 (not shown). Coil L 1  is of a hard (Type II) material and may be a multi-layer coil of copper plated Nb- Zr wire while coil L 2  is of a soft (Type I) material and may be a single layer coil of lead or Pb-Sn solder wire. The transformer has a superconductive primary winding and a copper secondary winding which also provides R o . The coils are connected by removing the copper plating from the ends of L 1 , spot welding a niobium foil to the wire, tinning the foil and wire with Pb-In and then clamping the ends of L 2  to the foil by means of pairs of copper blocks, wetted with In-Ga, the clamps being connected to the secondary winding of the transformer. A biasing magnetic field can be applied to coil L 2  to lower the critical current in the positive direction and to increase it in the negative direction. In this case a symmetrical transformer primary current can be used.
Patent GB-257600-A (GB)
Title: Method of and apparatus for cleaning high pressure boiling apparatus
IPC: F22B37/54
Filed: 1926-08-19
Abstract: 257,600. Ullmann, G. Aug. 28, 1925, [Convention date]. Digesters. - High-pressure boiling apparatus are cleaned simultaneously with the release of the pressure by spraying into the boiler water or other cleaning fluid. In the example shown which incorporates a heater t through which the lye circulates, the valves v, w, x are opened so that vapour, and lye carried over, pass through the heater t to the receiver h before passing to the outflow o. Water is at the same time admitted through the perforated pipe j into the dome i, of the digester a and also by the pipe q to the nozzle o. In this way the heater is cleaned and the vapour passing out is cooled. The water may be admitted at the top or bottom of the boiler.
Patent GB-1305412-A (GB)
IPC: H01L23/02
Filed: 1970-04-29
Abstract: 1305412 Semi-conductor devices MICROWAVE SEMICONDUCTOR CORP 29 April 1970 [30 April 1969] 20485/70 Heading H1K A housing for a microwave device, e.g. transistor comprises an insulating, e.g. beryllia substrate carrying an insulating, e.g. beryllia or alumina intermediate member apertured to accommodate the device, the member having spaced input and output terminal areas on its upper face and a conductive area extending beneath these areas between it and the substrate. In the embodiment, Fig. 3, the conductive area 18 is grounded and forms with the input and output terminal areas impedance matching transmission line sections, the input and output being isolated by a conductive shield 23 occupying three walls of the rectangular aperture (Fig. 5, not shown). It contacts conductive area 18 within the aperture and extends 24, 24<SP>1</SP> between the input and output terminals 21, 22 over the top surface and edge of member 12 to join it again outside the housing. Where the device is a transistor its collector contacts conductive layer 17 from which track 27 extends to the output terminal area. Flying; leads connect the base to the input terminal area and the emitter to ground via tracks 24 and 24<SP>1</SP>. The cover 15 may be insulating but is preferably. conductive and grounded via conductive tracks extending over the edges of insulating washer 14 to tracks 24, 24<SP>1</SP> which they contact via soldered on metal blocks. Techniques for assembling the housing are described. Conductive area 17 may be dispensed with if not needed for electrical connection, e.g. as in mounting the printed circuit shown in Fig. 11 and replaced by an extension of area 18 from which the device is separated by insulation. Modifications of the shield and its connections are also described. Grounded area 18 preferably extends via the edges to the lower face of the substrate where it contacts a copper header 10. This may be formed as a threaded stud or washer or be apertured for bolting to a strip transmission line (Fig. 7, not shown) together with a fined heat sink.