baber/WOPTO huggingface dataset:
Patent GB-548633-A (GB)
Title: Antenna coupling circuits
Filed: 1941-04-15
Abstract: 548,633. Wireless receiving circuits. PHILCO RADIO & TELEVISION CORPORATION. April 15, 1941, No. 4911. Convention date, May 1, 1940. [Class 40 (v)] An antenna circuit for a radio receiver, constructed and arranged to receive selectively from a loop or from an external antenna, comprises a loop winding and a tuning condenser to form a resonant circuit tunable over a range of frequencies, an external antenna connected to a high impedance primary winding which is inductively coupled to the tuned loop circuit. As shown in Fig. 1 a loop 1 tuned by a condenser 2 is connected through a low impedance secondary winding 5 to the grid of a valve V,. An external antenna 3 is connected to ground through a high impedance primary winding 4 which may have a dust iron core inductively coupled to coil 5. When only the loop is being used the antenna 3 is grounded and coil 4 short circuited by link 8. The resonant frequency of the antenna 3 with coil 4 is below the useful band of frequencies. Also the gain of the circuit at these low frequencies is reduced by means of a shortcircuited winding 7. Also coils 4 and 5 are wound so that the capacity coupling aids the inductive coupling and so increases the gain at the high-frequency end of the band. Coil 5 has a high O value relative to loop 1. In a modification the high impedance primary is designed to be coupled directly to the loop 1 being mounted close to one comer of it (Fig. 2 not shown). Specifications 541,867 and 542,241 are referred to. Reference has been directed by the Comptroller to Specification 547,677.
Patent GB-588536-A (GB)
Title: Automatic power-operated machines for cleaning or stripping the revolving top clearers of cotton-spinning machines, jack frames, intermediate frames, or slubbing frames
IPC: D01H11/00
Filed: 1945-02-27
Abstract: 588,536. Spinning yarns &c. BARLOW & JONES, Ltd., and MONKS, G. Feb. 27, 1945, No. 4927. [Class 120 (iii)] In an atomatic power-operated machine for stripping top clearer rollers of cotton spinning machines, jack frames, intermediate frames, or slubbing frames, clearers C are fed from a magazine 36, Fig. 1, to a rotating wire brush roller 51 and after cleaning are dropped into a receptacle 60. Magazine 36 is fixed by bolts 48 to frame members 34 at the top of which are pivoted levers 35 carrying oppositely disposed tables 41, 43 which, when reciprocated by cam 22 through lever mechanism 24, 26, 29, 31, act as separating means for the clearers C. Moving with table 41 is a resilient guide plate 44 carrying a bar 45 which holds a clearer in rolling contact with a vertical rest through a gap in which the rotating brush 51 projects. Cam 22 is driven by reduction gearing from the shaft of the wire brush roller, and is so shaped that there is a time lag between displacement of a stripped clearer and positioning of another, so that the wire brush can be cleaned by means of a bristle brush 63. Fig. 7 shows the apparatus modified to accommodate clearers of different diameters. Guide bars 61<1> are fixed to slide bars 78 and can be raised or lowered relative to the magazine floor by movement of handle 71. The relative spacing of the tables is altered correspondingly by moving a transverse slide bar 82, Fig. 9, cam surfaces 90 of which act to raise or lower the spring-mounted table 43'. Adjustable stops enable the guide bars and table to be correctly positioned according to the size of the clearers. The machine may embody several magazines mounted side by side.
Patent GB-396826-A (GB)
Title: Improvements in gas supply ports for heating apparatus particularly applicable to melting or heating furnaces
IPC: F27B3/00
Filed: 1932-02-19
Abstract: 396,826. Gaseous-fuel furnaces. RUSSELL, D., Glencairn, Wickersley Road, Rotherham, Yorkshire. Feb. 19, 1932, No. 4950. [Class 51 (i).] Relates to proportions for regenerative furnace gas ports designed to secure maximum heat release in minimum time. The gas port 1 is formed with straight sides 4 which diverge upwardly towards a top boundary 5 which may be arched or straight. The port may have a horizontal base 3, or the sides 4 may diverge from a point. Air supply ports 2 are located on each side of and above the port 1. Dimensions are given. According to the Provisional Specification, the shape of the port is such that the length of the upper and lateral components of its cross-sectional outline exceeds three times the square root of the area of cross section.
Patent GB-801345-A (GB)
Title: Improved method and apparatus for expanding tubular metal articles
IPC: B23P15/10
Filed: 1956-02-17
Abstract: 801,345. Forging; expanding pistons. MOTOR SPECIALTIES, Ltd. Feb. 17, 1956 [Feb. 22, 1955 ; May 9, 1955], No. 4975/56. Classes 83 (2) and 83 (4). A method of expanding a tubular metal article having a curved surface, such as a piston, comprises placing a convex surface of the metal article on a convex anvil, Fig. 2, striking the concave surface of the article nearest to the anvil with a first hammer 31a to produce an initial depression with a raised edge on said concave surface, and while the first hammer is still engaged in the depression, hammering the raised edge thereof by second hammers 31b flanking the first hammer, to expand the metal away from the initial depression, Fig. 3. The cylindrical anvil 2 is rotatably mounted in supports 3, Fig. 4, and the piston 6 to be expanded is supported thereon by bearing members 4c mounted on calliper arms 4 pivotally mounted at their lower ends. These arms carry toothed quadrants 11, Fig. 7, which engage roller chains 9 on a vertically slidable member 8 which is biased downwardly by a spring 13. The roller chains 9 are pressed outwardly by rubber buffers 10 which are themselves compressed by a strip 12. The two calliper arms are therefore spring biased inwardly and are moved simultaneously. The inward movement is limited by screws 5a or by a removable stop 5b, Fig. 4. The three hammers 31 are pivotally mounted at 32 on a support 24 which is vertically adjustable on a bracket 16 by a handle 27 secured to a vertical worm 25, Fig. 14 (not shown) ; a spring-loaded brake 29 prevents rotation of the worm. The bracket 16 is adjust-' able longitudinally of a base plate 1 by a sprocket 20 engaging a rack 21 on the base, the sprocket being turned by a handle 17. The hammers 31 are biased downwardly by front springs 40 and rear springs 35 which are adjustable in tension by a nut 38. The hammers are raised against their springs by cam rollers 47 mounted on a cam shaft 45 carrying a pulley 45a driven by an electric motor. The rollers 47 engage the tail ends of the hammer to raise their tips 33 and subsequently suddenly release them. The tail end of the middle or first hammer 31a. is shorter than that of the flanking hammers whereby the middle hammer is released first by the rollers. A limiting stop 48a is provided for the downward movement of the hammer heads 33 and the latter may be raised manually, for setting of the piston 6, by a pivoted lever 44. A setting plate 51 for the piston is provided adjacent the anvil 2. The procedure for expanding a piston by the peening hammers is described.
Patent GB-127236-A (GB)
Title: Improvements in Filters.
Inventor: GIOVANNONI GUGLIELMO
IPC: B01D36/00
Filed: 1919-02-28
Abstract: 127,236. Giovannoni, G. May 22, 1918. [Convention date]. Filters having sheet filtering-materials.-A filter for gasolene comprises a chamber 1 provided with inlet and outlet branches 2, 3, separated by a bell 5 surrounding cylindrical wire-gauze drums 6, 6<1>, 6<11>. The drums are connected at their ends, as shown, to a disk 7, an annular ring 8, and a disk 9, the disk 9 having apertures within the drum 6<11>. With this arrangement. the liquid will filter through one of the drums even when the others are obstructed. A spindle 10 with spring 15 maintains the disks 7, 9 in their proper places. The spindle screws into a socket 12, which is provided with apertures 13 and a cock 14 for the discharge of water and foreign matter collecting at the bottom of the chamber 1.
Patent GB-1438455-A (GB)
Title: Presses
IPC: B30B7/02
Filed: 1974-02-04
Abstract: 1438455 Presses; laminating press SECIM and VOISIN & PASCAL 4 Feb 1974 [7 Feb 1973] 05078/74 Headings B5F and B5N [Also in Division B1] In a plywood, timber or filter press having fixed crossbars 9, 10, a horizontally movable crossbar 5 and horizontally-guided vertical plates 11, the plates bear lugs 12 for engagement with notches 37 on a rack 31, which is fixable in position so that it can move horizontally with the crossbar 5. In operation, the notches 37 successively engage corresponding lugs 12 and draw the plates apart by a distance l. As shown, the rack 31 is vertically movable under the action of a jack 36 and is fixed in position by a bolt 24, and the crossbar 5 is moved by a jack 14. In a modification (Fig. 6, not shown), two sets of racks 31, each set operating on a different group of plates, are provided, whereby one group of plates is drawn apart while the other group remains closed. A vertically movable rack, having notches for engaging projections on the plates, may be provided for maintaining the plates in spaced positions when necessary.
Patent GB-241085-A (GB)
Title: Improvements relating to cutter casings for continuously rotating cutters for industrial slicing machines for beetroot and the like
IPC: C13B5/06
Filed: 1925-02-24
Abstract: 241,085. White, A. E., (Maschinen-und Werkzeugfabrik Akt.-Ges. vorm. A. Paschen). Feb. 24, 1925. Cutting and slicing vegetables &c.-A continuously rotating knife member comprises a front beam a, cheeks c and a supporting beam b having a rib e, between which and side-gripping members g are gripped two knives d in alignment. Each gripping member comprises a screw g having a pin n taking into a hole in a wedge-shaped piece k which is thus pressed against the side edge of the knife d, the various parts of the gripping member being guided in grooves in the side cheek c. The entire surface of each knife is thus free from all obstruction to the cut slices.
Patent GB-683147-A (GB)
Title: Improvements in and relating to stop mechanism for looms
Inventor: BARKER LAWSON POOLE
IPC: D03D49/58
Filed: 1950-03-01
Abstract: 683,147. Loom stop motions; change box motions. COURTAULDS, Ltd. Feb. 28, 1951 [March 1, 1950], No. 5166/50. Classes 142(i) and 142(iii) A loom having drop boxes actuated through an escape motion 6 is stopped if the pawl 9 of the escape motion is forced out of the notch 10 in the box rod 1 owing to movement of the boxes being obstructed. A lever 12, pivoted on the pawl 9 and carrying a roller 13 resting against the box rod 1, pulls a cable 14 which brings a striker on the slay into line with a member on the breast beam, whereby the starting handle shaft is turned to the "stop" position. Specification 497,352 and 14009/07, [Class 142], are referred to.
Patent GB-712291-A (GB)
Title: Improvements in or relating to a cleaning structure
IPC: A47L13/12
Filed: 1952-02-29
Abstract: 712,291. Brushes, pads, mops and squeegees; mop handles. TRINDL, J. H. Feb. 29, 1952, No. 5355/52. Classes 19 and 61 A cleaning element .(e.g. a mop, pad, brush or squeegee) is detachably secured to a cleaning tool head by attaching to the element a fabric backing having fabric tabs extending therealong and along which are secured relient bars which engage in slots in the head and are held therein by virtue of the bars having a different conformation from the slots. A cellulose sponge mop 11 (Figs. 1 and 3) has a fabric backing 17 edged with a buffer 19. Two tabs 20 are provided either by forming tucks in the material or from a separate piece of material secured thereto and a metal strip is crimped around each tab or inserted within the tuck. The strips are then inserted in inwardly or outwardly sloping slots in the head or slots in the sides of the head. Either the strips or the slots are bowed along their length so that there is sufficient friction to hold them together. A squeegee 16 or a brush is held in a slot in the head by a similar bowed metal backing piece 15. In Fig. 6 the head takes the form of a sheet of metal 21 bent at 30, 29, 27 at each end to provide the slots for the strips on the sponge. A socket 31 for a handle is held in the dove-tail space between the slots and may be removed and replaced by a brush Fig. 7 (not shown). The ends 29 of the metal may be extended to the edge of the sponge, Fig. 7 (not shown), or the metal plate 21 may be bent to provide slots which do not incline inwards or slots which are parallel to the upper face of the sponge and open inwardly or outwardly, Figs. 8, 9 and 10 (not shown).
Patent GB-323675-A (GB)
Title: Improvements in or relating to electrodes for use in arc welding
IPC: B23K35/02
Filed: 1929-02-18
Abstract: 323,675. Imperial Chemical Industries, Ltd., and Paterson, J. H. Feb. 18, 1929. Uniting by fusion.-An are-welding electrode of the strauded wire type comprises wires which are plaited together individually or in groups so that each wire or group of wires comes to the surface at equal intervals along its length and simultaneously makes electrical contact with the current-conveying member of the welding tool, such as the nozzle of the tool described in Specification 301,125, [Class 39 (iii), Heating by electricity]. The distance between the intervals is preferably not greater than the length of the nozzle. The wires constituting the electrode as a whole or the individual wires of each group may be welded together at intervals, as in the electrode described in Specification 302,064, as owing to the shortness of the nozzle the individual wires might not simultaneously make contact therewith. Alternatively, or in addition, the groups may be twisted before plaiting, so that the individual wires used in turn come uppermost and make contact with the nozzle. The individual wires or groups or the electrode as a whole may be coated with a metal of high conductivity, such as copper, by a metal spraying operation, by dipping in molten metal, by sherardizing or by electro-plating. Flux may be inserted between the strands and may consist of strands of asbestos or similar yarn impregnated with silicate of soda &c., or may consist of a paste squeezed between the metal strands.
Patent GB-1027443-A (GB)
Title: Frequency synthesizer
IPC: H03L7/22
Filed: 1963-02-11
Abstract: 1,027,443. Frequency synthesizer. BECKMAN INSTRUMENTS Inc. Feb. 11, 1963 [March 19, 1962], No. 6406/63. Heading H3A. A frequency synthesizer comprises a number of cascaded stages 30a-30e, each of which sets one digit of the frequency to be synthesized and includes, e.g. stage 30a, a local oscillator 35a supplying a X10 frequency multiplier stage 36a and a mixer-phase detector 37a which receives one input at frequency C from the multiplier, a second input at frequency B from the local oscillator of the next preceding stage and a third input at frequency A selected by a digit setting switch 20A from a source of reference signals. In the arrangement shown in Fig. 1, the output from the phase detector controls the local oscillator frequency such that A + B = C. The synthesizer operates in the range 10-999,990 c/s. and includes ten reference frequency signals 10-19, increasing in 1 Mc/s. steps from 81-90 Mc/s., each of which are connected to one position on the decade switches 20A-20E. Assume a signal of 900 kc/s. is required, switch 20A, stage 30a (100 kc/s.) is set to position 9 and selects a reference signal of 90 Mc/s., in addition the local oscillator, which is ganged to switch 20A, is set to 9À9 Mc/s. As the preceding stops are set to zero, oscillator 35b of the next preceding stage supplies an input of 9 Mc/s. to phase detector and mixer 37a which then supplies zero output to the control terminal of oscillator 35a since A+B = 99 Mc/s., i.e. ten times the oscillator signal of 9À9 Mc/s. The oscillator output signal is mixed 41 with a 9 Mc/s. signal from source 42 to provide a 900 Kc/s. output signal. Assuming 920 kc/s. is required the switch 20B of stage 30b is set to position 2 and its local oscillator now supplies an output frequency of 9À2 Mc/s., which when added in mixer-phase detector 37a to the selected signal of 90 Mc/s. provides a signal of 99À2 Mc/s. and the detector provides anout put signal to control local oscillator 35a to onetenth of this value, i.e. 9À92 Mc/s.
Patent GB-1177013-A (GB)
Title: Improvements in or relating to an Electro-Mechanical Switch Matrix
IPC: H01H67/24
Filed: 1967-02-03
Abstract: 1,177,013. Remanent relays; electric selectors. FUJITSU Ltd. 3 Feb., 1967 [3 Feb., 1966], No. 5439/67. Headings H1L and H1N. In a relay matrix each relay has a remanent core normal to a shunt plate through which the core and at least one magnetic contact unit extends and form a planar magnetic circuit and the planes of the magnetic flux paths of the relays of each row (or column) are parallel and at right angles to the planes of the magnetic flux paths of the relays in each adjacent row (or column). The coils 2, 3, 2<SP>1</SP>, 3<SP>1</SP> are wound on the core ends on each side of the shunt plate 6 continuously, in series, before the reed contact units 5 are added and insulated yokes 4 magnetically connect the core and contact unit ends. As shown in Fig. 8 if either pair of series coils 2, 2<SP>1</SP> or 3, 3<SP>1</SP> are energized the contacts are biased open and if both pairs of coils are energized (Fig. 9), the contacts are closed. Fig. 12 shows the alternate rows of relays with their magnetic flux planes at 90 degrees to each other to limit interference.
Patent GB-285911-A (GB)
Title: Improvements in turbine wheel propellers and motors
IPC: B64C11/00
Filed: 1928-02-21
Abstract: 285,911. Strandgren, C. B. Feb. 25, 1927, [Convention date]. Paddle wheels.-Comprises adjustable, means for feathering the paddles in paddle wheels of the kind in which the paddles are pivoted on axes parallel to the main shaft, and are feathered so that the normals to their working faces intersect at a single point. Specification 248,028 is referred to. Fig. 1 shows diagrammatically the feathering means as applied to one of the paddles 15 of the wheel. The paddle is pivoted at 7 to one arm 14 of the star-wheel carried by the main shaft 5, and has pivoted to it at 13 a feathering link 18, the other end of which is pivoted to the short arm 11 of a bell-crank lever 10, 11 which is in turn pivoted to the star-wheel or arm 14 at the point 12. The arm 10 of the bell-crank engages a radial guide 9 in a disc 8 which is free to rotate about an eccentric centre 4'. The linkage is such that as the main shaft 5 is rotated the paddles 15 are feathered so that normals to their surfaces intersect' at a point 6. In the arrangement shown in Fig. 3 separate discs 8 are provided for each paddle. They rotate upon rollers 1, 2, 3, carried by a frame 20 which may be adjusted vertically, to regulate the feathering, by a hand-screw 27, and horizontally by a similar screw. Arms 10<1> on the discs have studs 32 engaging grooves 33 in guides 9<1>.
Patent GB-872743-A (GB)
Title: Improvements relating to submersible electric motors
Inventor: HALLETT LOUIS BERTRAM HENRY
IPC: H02K5/128
Filed: 1958-02-20
Abstract: 872,743. Electric motors having air-gap partitions. SUMO PUMPS Ltd. Jan. 27, 1959 [Feb. 20, 1958], No. 5514/58. Class 35. In a submersible electric motor comprising a stator casing 10 having a space 9 containing stator windings 13 and core laminations 11 within a central bore of which is disposed a rotor 15, the space 9 is sealed off against the entry of water from the central bore by an enclosure tube 12 fitted in the stator at a position between the rotor and stator and constructed of glass-fibre-reinforced epoxy resin at least in the part 14 extending in the gap between the rotor and the stator laminations. As shown, beyond the ends of the core 11 the ends of the part 14 are connected to relatively thickwalled tubes 17, 18 of the same material or metal such as stainless steel and sealed to the casing 10 by means 19, one of which also seals stator winding cables 20.
Patent GB-697077-A (GB)
Title: An improved fixing element
IPC: F16B12/46
Filed: 1952-03-03
Abstract: 697,077. Angle connectors. STRANDHAUGH, L. March 3, 1952 [March 3, 1951], No. 5531/52. Class 52(ii) [Also in Group XXV] An angle connector for securing tabletops or chair seats to the supporting frame comprises an angle piece 11, 12; the limb 11 having a nail shank 13 of the form shown in Fig. 1, welded to or otherwise integral therewith. The shank is driven into the frame in the position shown and the connectors 'then turned to bring the limb 12 against the top 16. The projections 4 or 14 on the thinner edges of the shank then bite into the frame to hinder withdrawal. The limb 12 has a cruciform slot 18 for use with a round headed fixing screw of stan-. dard form.
Patent GB-212400-A (GB)
Title: Improvements relating to gas heated cooking ovens
IPC: F24C3/08
Filed: 1923-02-26
Abstract: 212,400. Radiation, Ltd., and Yates, H. J. Feb. 26, 1923. Gas cooking-stoves; air supply for combustion. -A bar or plate b is arranged at the lower side of the tubular burner a of a gas oven so as to form with it a passage c which directs secondary air to the flames.
Patent GB-349569-A (GB)
Title: Improvements in apparatus for controlling the flow of fluids
IPC: G05D11/00
Filed: 1930-02-19
Abstract: 349,569. Proportioning fluids in flow. PATERSON ENGINEERING CO., Ltd. and SMALLEY, W., Windsor House, Kingsway, London. Feb. 19, 1930, No. 5579. [Class 135.] Apparatus for proportionally controlling the flow of fluids, more particularly for controlling the addition of chlorine to water, comprises a diaphragm &c. control for one fluid operated by a weight which is automatically proportioned to the flow of the other fluid. In the form shown in Fig. 1, the diaphragm 11 is controlled by a weight 15 movable along an arm 12 the position of the weight being determined by two floats 6, 7 in chambers 2, 3 in communication respectively with the upstream side and throat of a Venturi through which the other fluid flows. Fig. 2 shows a form in which the diaphragm is controlled by the weight of a receptacle 25 connected by a flexible pipe 30 with the upstream side of a weir.