baber/WOPTO huggingface dataset:
Patent GB-516451-A (GB)
Title: Improvements in louvre shutters for photographic cameras and other optical apparatus
IPC: G03B9/50
Filed: 1938-06-28
Abstract: 516,451. Shutter for signal lamp, KENNEDY, D. June 28, 1938, No. 19152. [Class 75 (iv)] [Also in Group XX] The shutter operating mechanism comprises a driving crank having a throw greater than that of the shutter mechanism, and a resilient connection therebetween to take' up the excess throw of the crank, whereby the dwell of the shutter in the open position is increased. As shown, the shutter is driven from a rotatable disc 27 having an eccentric pin 3 which may be radially adjustable, and which is connected by a rod 4 to a rod 8 slidable in a frame 9 having a collar 12 between which and the base of the frame a compression spring 13 is located. The frame 9 is slidable between fixed guide plates 10, and carries a pin' 14 engaging slots in the adjacent arms of bell-crank levers the other arms of which are slotted to engage pins 19 on slidable bars 20 to which the levers 21 operating the shutter louvres 5 are pivoted. ' In action. stops 22 on the frame 9 arrest the downward movement of the frame before the throw of the rod 8 is complete, and the remainder of the throw is taken up by the spring 13. The disc 27 may be driven by a coiled spring which may be' wound, e.g., from-the power drive of an aircraft camera and whose initial tension is adjustable, and any suitable escapement mechanism may be provided.
Patent GB-613712-A (GB)
Title: Improvements in or relating to combined wireless receiving sets and table lamps
IPC: H05K11/00
Filed: 1946-06-26
Abstract: 613,712. Lamps combined with wireless receivers. MARSDEN, E. A. June 26, 1946, No. 19156. Class 75 (iii)] [Also in Group XL (c)] A wireless set combined with a table lamp comprises a compartment with the receiver and loudspeaker contained therein, a sound reflector mounted in front of the speaker and an electric lamp mounted beyond the reflector. As shown the lower compartment 1 contains the receiver and loudspeaker. A second compartment.2 mounted on one or more pillars above the first compartment and housing lamp 32 comprises translucent side walls 24 and an upper cover 21. The lamp may be used as the ballast resistor for the receiver. The loudspeaker and lamp may alternatively be mounted beneath the receiver.
Patent GB-235043-A (GB)
Title: Improvements in fastenings for hand bags
IPC: A45C13/06
Filed: 1924-11-18
Abstract: 235,043. Waugh, R. Nov. 18. 1924. Catches, spring.-In a fastening for hand bags &c. of the type comprising a catch pivoted on one part of the bag and held in engagement with a member on the other part by the pull on the carrying handle which is attached to the catch, the catch 17, Figs. 1 and 7, has an extension 18 forming a manipulating handle. The catch is spring prised to fastening position, and the member 26, Fig. 7, with which it engages is bevelled at 28 so that the engagement is automatic. The catches may be used singly or one may be attached to each end of the handle.
Patent GB-587155-A (GB)
Title: Power supply regulators involving vacuum tubes
IPC: H03F1/16
Filed: 1943-11-19
Abstract: 587,155. Thermionic valve circuits. STANDARD TELEPHONES & CABLES, Ltd. Nov. 19, 1943, No. 19376. Convention date, Nov. 26, 1942. [Class 40 (v)] The reaction of one valve stage on the power supply to which it is connected, and so on the other stages connected to the same supply is prevented by providing a second valve which draws from the supply current of approximately equal magnitude, but of opposite phase. The valves have separate cathode connections to ground through separate impedances and the second valve is controlled by a coupling between the valves. In this way an oscillograph may be operated from a single supply source which energizes amplifiers feeding the X-axis and Y-axis and the grid modulating the beam. Fig. 1 shows an arrangement in which the auxiliary valve 7 is fed from the anode of the amplifier 6. With this arrangement, a push-pull output may be taken from the cathodes with earth as the centre point. The circuit may be used for voltage gain or with a voltage gain of less than unity, for impedance transformation. In the. latter case, the resistances 8, 9 are preferably equal and are less than the resistances 24 and 25. In the former case, the output is taken from the anodes and larger anode resistances are used. The Specification as open to inspection under Sect. 91 also describes Fig. 1 (Cancelled) an auxiliary valve 7, the cathode of which is connected to the cathode of the amplifying valve 6 and through a common impedance, 16 to earth. The grid of the auxiliary valve being earthed and the output being taken between the cathodes and earth. This subject-matter does not appear in the Specification as accepted.
Patent GB-597344-A (GB)
Title: Improvements in or connected with trench excavators
IPC: E02F5/02
Filed: 1945-07-30
Abstract: 597,344. Trench excavators. ROBEY & CO., Ltd., and BRETHERTON, F. J. July 30, 1945, No. 19419. [Class 68 (i)] Relates to trench excavators in which a travelling chassis carries a cutting wheel carrying digging buckets around its rim, and cornprises the provision of buckets with open ends, and a rotary scraper with one or more arms so mounted that the arms can sweep through the buckets and project the contents away from the machine and trench, the scraper being synchronised with the bucket wheel to prevent the arm or arms contacting the buckets. As shown, the chassis 1 is mounted on endless bands .2 or wheels driven from a motor 3 through shaft 6. In the chassis is a frame 8 hinged about the shaft 6 and raised or lowered by a cable 14 connected to a drum 11 rotated through gearing 12; the frame 8 has side plates 18 carrying bearing wheels 22, 24, 25, supporting the cutting wheel 26 which supports open ended buckets 16, bearing wheel 22 being formed with a toothed wheel 23 by which the cutter wheel is driven. The frame 8 also carries brackets 29 supporting a shaft 36, carrying spaced crown wheels 38, 39, shaft 36 and bearing wheel 22 being driven from the shaft 6 through chain 40; a cross-bar 34-on the frame 8 slidably supports a bearing block 33 carrying a shaft 32 supporting cranked radial arms 31 and a bevel gear 35, the bearing block being adjusted to engage the bevel gear 35 with either crown wheel 38, 39, whereby, in operation, the arms 31 sweep through the buckets and project the contents laterally clear of the machine and trench.
Patent GB-1379575-A (GB)
Title: Meshing screw pump
IPC: F04C2/16
Filed: 1971-06-08
Abstract: 1379575 Rotary positive-displacement pumps STOTHERT & PITT Ltd 7 June 1972 [8 June 1971] 19459/71 Heading F1F An intermeshing-screw pump comprises a pair of intermeshing screws 2, 3 mounted in a casing 1 having an inlet 14 and outlet 15, screws 2, 3 being surrounded by a fixed sleeve 16 and a movable sleeve 18, the movable sleeve being attached by tie rods to a balancing sleeve 20 which surrounds labyrinth sealing means 44, 45. The sleeve 20 and means 44, 45 serve to balance fluid-pressure forces on the sleeve 18 and screws 2, 3 respectively. Sleeve 20 is engaged by a threaded spindle 21 which can be rotated to move sleeves 18, 20 axially by a control means 23 Fig. 4 (not shown). Since the high-pressure outlet 15 leads to between sleeves 18, 20 it can be seen that the differential fluid-pressures acting on sleeve 18 are cancelled by those acting on sleeve 20. Similarly the interslotting discs 44 and spacers 45 on the shafts 4, 5 supporting screws 2, 3 serve to balance the forces on the screws 2,3. Thus adjustment of the sleeves 18, 20 is made easier, such adjustment effecting a change in capacity of the pump.
Patent GB-604510-A (GB)
Title: Improved means for securing a member on a shaft for the transmission of rotary motion
IPC: F16D1/08
Filed: 1944-10-10
Abstract: 604,510. Securing articles on shafts. ADCOCK, E. S., and BECKETT, LAYCOCK, & WATKINSON, Ltd. Oct. 10, 1944, No. 19460. [Class 80 (ii)] A member 11 such as a wheel, gear-wheel, ' arm or bellcrank lever, is secured on the reduced cylindrical end of a shaft 12 by a diametral key 22, which engages aligned slots in the end-faces of the shaft and member, and is retained by a central screw 26, the key being formed by upturned flanges on two separate half-washers 20, 21, which may be recessed in the face of the member 11. To provide self-locking, the screw may be slotted and fit a tapered hole, and the washer-flanges may be arranged to deflect to grip the screw as it is tightened.
Patent GB-1427490-A (GB)
Title: Mounting for precision friction wheel measuring devices
IPC: G12B9/00
Filed: 1974-05-03
Abstract: 1427490 Gauging PRIMUS MFG Inc 3 May 1974 [7 May 1973] 19508/74 Heading B3B [Also in Division G1] A measuring wheel 22, Figs. 1, 2, engaging a lathe bed 16 is mounted in a housing 10 having upper and lower members 18, 20 which may be moved towards or away from the bed 16 by operating a screw 46 abutting the member 20 at 47 to slide a planar surface 40 over fixed supports 42, Fig. 4. The upper end of a screw 72 engages a tang portion 60 of the housing 10 to provide a third support. By rocking the member 20 on the supports 42 the plane of the wheel 22 may be tilted, and since the metering wheel has its outer perimeter crowned slightly at a radius " r ", Fig. 3, greater than the radius of the wheel, then by tilting the wheel its effective perimeter where it contacts 16 can be varied. Clamping screws 56 may engage a lug 52 depending from 20 to lock the housing in position. To adjust the mounting the screws 56 and 76 are loosened and the acrew 46 tightened until a sheet 38, in abutting contact with upper and lower support members 30, 32 connected by flat springs 34, 36, is caused to buckle slightly. This condition is indicated by indexing marks 81, 82.
Patent GB-892403-A (GB)
Title: Improvements relating to control gear for fluorescent lamps
Inventor: COOK SIDNEY ARTHUR
IPC: F21V23/02
Filed: 1959-06-08
Abstract: 892,403. Inductances. ASSOCIATED ELECTKICAL INDUSTRIES Ltd. July 7, 1960 [June 8, 1959], No. 19532/59. Class 38 (2). [Also in Group XI] A choke 3 (Fig. 1) and other control gear for a fluorescent lamp, such as capacitor 6 and resistor 8 are enclosed in a container 1 of presspahn or other insulating material and the whole is removably accommodated in ah open-ended metallic housing 19 (Fig. 2) which acts as a magnetic screen for the control gear. The choke and the other components may be in separate compartments in container 1, the latter compartment having an integral lid and insulating packing may be provided in both. A socket 10 for a starter 11 is provided. The choke, at least, may be embedded in a silica compound filler or a resin. A locating screw 18 secured in a wood block in container 1 cooperates with a notch 24 in housing 19 and may be used as an earthing point. The top of housing 19 is provided with fixing apertures 27 to enable it to be secured to a ceiling or other fixing plate. Extensions to housing 19 are provided with bolts 32 by which lighting fitting carrier 28 may be secured thereto.
Patent GB-892415-A (GB)
Title: Scavenged four-stroke internal combustion engines
IPC: F01L1/28
Filed: 1958-06-18
Abstract: 892,415. Multi-cylinder four-stroke engines; charge pumps; -cylinder passages; valves and valve-gear. BUCHI, A. June 18, 1958 [June 19, 1957], No. 19553/58. Classes 7(2) and 7(6). Cooling of coaxial inlet and exhaust valves 7, 8 respectively is effected by scavenging air from the valve 7 trapped downstream of the valve 8 after closure thereof. Cooling may be assisted by intense air swirling due to spiral inlet and exhaust passages 26, 22 or to helical ribs on the stem of the valve 8 or the interior of the valve 7. Scavenging and charging air is supplied by an engine-driven pump or blower or by a turbo-charger 19, 20 powered via ducts 23, 24 by exhaust pulses from separate cylinder groups. The valves 7, 8 are operated from a camshaft 5, the valve 8 through a bridge 18 coacting with a hairpin valve spring 17. Scavenging may be effected for 50 degrees on either side of T.D.C., or, to effect substantial filling of the passage 22 with air, for 60 degrees on either side of T.D.C. Specification 262,106 is referred to.
Patent GB-187700-A (GB)
Title: Improvements in and relating to feed water heaters
IPC: F22D1/32
Filed: 1921-07-22
Abstract: 187,700. British Thomson-Houston Co., Ltd., (General Electric Co.). July 22, 1921. Recording particular operations.-Feed-water is heated to ebullition to remove contained gases in a chamber 6 above a storage vessel 5 for heated water. To record the quantity in the lower reservoir, a float 39 operate an external arm 40 which holds at its outer end a sleeve 42 with collar 43 encircling a spindle 44 on which a drum 51 is mounted. An arm 52 bearing a pen 53 is also attached to the sleeve 42. The collar 43 has a pin which works in a diagonal slot 47 in the spindly 44 and is itself mounted in the collar 42 in such a way as to rotate in one direction only. On the level in the tank 5 falling, the arm 40 rises and the pen 53 marks a vertical line on the stationary cylinder 51. When the level rises, the arm 40 falls and the drum rotates with the spindle 44.
Patent GB-247612-A (GB)
Title: Improvements in electric amplifying apparatus
IPC: H04B3/20
Filed: 1924-08-21
Abstract: 247,612. Kirkland, J. W., (Allgemeine Elektricitõts-Ges.). Aug. 21,1924. Two-way repeating systems.-In a two-wav repeater, reaction between the input and output circuits of the amplifiers due to differences in the impedances of the real and, artificial lines is prevented by the insertion in each speech current path of chokes the impedances of which are varied in accordance with the direction of speech, by an alteration of the magnetization of the choke cores brought about by rectifying part of the speech currents and passing the resultant direct currents through additional coils wound on the choke cores. Fig. 1 shows a two-way repeater comprising speech amplifiers R1, R2 and artificial lines Kl1. Kl2 for each direction. Choking coils Dr1, Dr2 for each direction are preliminarily magnetized over one of their windings. Speech currents arriving over the line F1 pass to the speech amplifier R1 and through the choke Dr1, which owing to its pro-magnetization has no choking effect upon the speech currents. A portion of the amplified speech currents passes to the rectifier R2<1> and thence to a coil on the choke Dr2 the magnetization of which is reduced and its inductivity increased to cause it to choke out any return currents through the amplifier R2. The rectifiers R1<1>, R2<1> are adjusted, so as to be uninfluenced by unamplified speech currents. In a similar manner a portion of the amplified speech currents coming over the line F2 is passed through the rectifier R1<1> to increase the inductivity of the choke. Dr1. According to a modification the cores of the chokes are not premagnetized and normally the chokes have a high inductivity and exercise a choking effect. During speech a portion of the speech currents is passed before amplification through a rectifying amplifier and thence to a coil on the core of the choke in the speech path, thereby reducing its inductivity and permitting the speech currents to pass. Back-coupling currents, however, are throttled by the choke in the return path.
Patent GB-371231-A (GB)
Title: Method and device for the construction of foundation piles on site
IPC: E02D5/66
Filed: 1931-07-13
Abstract: 371,231. Piles. TRIGGS, W. W., 57, Lincoln's Inn Fields, London.-(Compagnie Internationale des Pieux Armes Frankignoul; 196, Rue Gretry, Liege, Belgium.) July 13, 1931, No. 20059. [Class 68 (ii).] In driving a telescopic preparatory tube for making a pile, the monkey acts simultaneously on the head of the bottom tube and on a plug of plastic fluidtight material at the bottom of it. As shown in the Figure, the telescopic tubing is formed by three tubes 1, 2, 3 ; outer and inner rings are fitted at the upper and lower ends respectively of the tubes 1, 2, and an outer ring is fitted at the upper end of the tube 3. The tube 3 is partly driven, carrying down also the tubes 2, 1, and its lower end is plugged with concrete or other plastic material 4. Upon this are placed two cylindrical blocks 5, 6, of which, surmounted by an anvil 7 with a guide rod 8 for a monkey 9. The tubes 1, 2, 3 of the plug 4 are then fully driven, and a wooden pilot pile is driven through the plug to the firm strata, forming a base pile upon the upper end of which the concrete pile may be made as usual by pouring in and ramming the concrete and withdrawing the tubes 3, 2, 1.
Patent GB-1079162-A (GB)
Title: Improvements in and relating to electric cables and apparatus for use therein
IPC: H03F3/12
Filed: 1965-05-13
Abstract: 1,079,162. Negative resistance repeaters. NIPPON TELEGRAPH & TELEPHONE PUBLIC CORPORATION. May 13, 1965 [May 13, 1964 (2); May 30, 1964], No. 20281/65. Headings H3T, H4L and H4R. Pulse transmission system comprises a number of repeaters situated at predetermined spacing along a cable and each including a tunnel diode biased to a region outside its negative resistance region so that the signal pulses occur in the negative resistance region and are therefore amplified while noise and spurious signals occur outside the region and are therefore attenuated. Fig. 10 shows a line including repeaters R 1  and R 2  each including a tunnel diode, e.g. D 1 , biased by a battery B 1  and coupled to the line on either the input or the output side by a matching transformer, e.g. T 1 , or a taper line transformer, Fig. 11 (not shown). A resonant circuit, e.g. L 1 , C 1 <SP>1</SP>, and capacitor C 1 <SP>11</SP> are provided to improve the response of the circuit, and it is suggested that a single battery may be used to bias all the tunnel diode along the line. The characteristics required of the tunnel diode &c. are derived mathematically.
Patent GB-1094635-A (GB)
Title: Electromagnetic friction clutch with fixed coil
Inventor: CIESZEWSKI JANUSZ
IPC: F16D27/115
Filed: 1966-05-07
Abstract: 1,094,635. Friction clutches. CENTRALNE BIURO KONSTRUKCYJNE OBRABIAREK. May 7, 1966. No. 20319/66. Heading F2C. A multiplate friction clutch having a stationary coil 10 is provided with an annular oil chamber 14, fed from a rotary hydraulic connector 19 via a pathway 17 through the coil bearings 12 and a gap 16, to lubricate and cool the plates 5, 7, and bearings 12. With the clutch disengaged, oil flows through oilways 23 in the plate-supporting bush 4 to the plates 5, 7, excess oil draining through gaps 22 and 21. On engaging the clutch, the oil passes through gaps 24, 21.
Patent GB-478667-A (GB)
Title: Improvements in and relating to bottle filling machines
IPC: B67C3/16
Filed: 1936-07-23
Abstract: 478,667. Bottling-machines. BROADHURST, S. F., and ALBRO FILLERS & ENGINEERING CO., Ltd. July 23, 1936, No. 20401. [Class 125 (ii)] In order to reduce the tendency to drip in the filling nozzles of a bottling-machine the tank 1 from which the liquid is supplied is subjected to continuous exhaustion through a pipe 28a. The upper portion of the tank is sealed in an airtight manner. The liquid is supplied to the tank through a pipe 16 having a float valve 18 at its lower end, which is connected to floats 20. The filling nozzle is opened by a rising bottle x, and air from the bottle escapes through a hollow rod 7 as the liquid fills the bottle.
Patent GB-1148335-A (GB)
Title: Improvements in or relating to bladed rotors for flow machines
IPC: F04D29/28
Filed: 1967-05-02
Abstract: 1,148,335. Turbines; centrifugal compressors. MASCHINENFABRIK AUGSBURG-NURNBERG A.G. May 2, 1967, [May 12, 1966], No. 20404/67. Headings F1C and F1T. A rotor blade of a turbine or compressor is divided in a plane transverse to the direction of flow into two parts which are pressed together and interengage at a butt joint by means of teeth so as to effect vibration damping. In the case of a centrifugal compressor Fig. 1, blade parts 2 carried by the rotor hub 1 engage blade parts 4 through teeth 7 at the butt joint 6. The pressure of a bolt 5 holding the hub portion 3 of blade parts 4 on a spigot 1a of hub 1 determines the initial degree of frictional engagement between the teeth 7. The teeth flanks may be either curved or straight, Figs. 4, 5 (not shown). In the case of a centripetal turbine, Fig. 3, the blade outlet edges 13 are cut away and replaced by toothed damping pieces 15 mounted on a common ring or pressed against edges 13 by a thrust ring (18) and bolts (19), Fig. 2 (not shown).
Patent GB-148474-A (GB)
Title: Movable floor for bakers' ovens
IPC: A21B1/48
Filed: 1920-07-10
Abstract: 148,474. Larraburu, J. April 8, 1916, [Convention date]. Bakers' ovens.-Comprises modifications in construction of the travelling goods-support for bakers' ovens described in Specification 28763/12. The transverse brick-carriers 8 are connected together by hinge-plates 10, 11 through which pass hinge-rods 12 extending beyond the plates 11 and carrying chain links 13 and supporting-rollers 14 running on rails 15. The bosses in the hingeplates, through which the rods 12 pass, are formed to engage the teeth of the sprocket wheels 17. The bricks 6 are of dove-tail form to correspond with the shape of the carrier, and are perforated to accommodate a tie-rod 69, the ends of the bricks being recessed to receive binding cement. The bearings of the sprocket shaft at one end of the oven are so mounted that the chain can be tensioned by weights.
Patent GB-1070786-A (GB)
Title: Method of preparing onium fluorides
IPC: C07F9/54
Filed: 1964-05-15
Abstract: Onium fluorides (fluorides of substituted ammonium, phosphonium, arsonium and stibonium ions) are prepared by (i) reacting an onium chloride, bromide or iodide with HF under anhydrous conditions to form an onium fluoride/hydrogen fluoride addition compound, reacting this with a metal alkoxide to produce the corresponding alcohol addition compound, and thermally degrading the latter; or (ii) reacting an onium chloride, bromide or iodide with a metal alkoxide, reacting the product with HF under anhydrous conditions to form an onium fluoride/alcohol addition compound, and thermally degrading the latter.  Examples prepare [CH3)4N]F, 1-benzylpyridinium fluoride, [(CH3)4Sb]F, trimethylbenzylammonium fluoride, [(C2H5)4N]F, [(CH3)3(C2H5)N]F, C3\H7)4N]F, [(n-C3H7)4N]F, trimethylcetylammonium fluoride, cetylpyridinium fluoride, [(CH3)3(C6H5)N]F [(C6H5)4P]F, [(C6H5)4As]F and [CH3(C6H5)3-As]F. The fluorides may be thermally cracked to give alkyl or aryl fluorides, e.g. benzyl fluoride from trimethylbenzylammonium fluoride, and methyl fluoride from [(CH3)4N]F.  The onium fluorides are good conductors and may be used in condensers (see Division Hl) or electrolytic processes (see Division C7).  They also react with metal alkyls to produce organometallic complex salts.ALSO:Solvate free substituted ammonium, phosphonium, arsonium or stibonium fluorides (see Division C2) can be reacted with metal alkyls to form organometallic complex salts for use as molten electrolytes, e.g. for refining aluminium or they can be used for the anodic production of fluoride layers on metal surfaces.