baber/WOPTO huggingface dataset:
Patent GB-471120-A (GB)
Title: Improvements in or relating to the production of friction elements
IPC: F16D69/02
Filed: 1936-02-26
Abstract: To prevent deterioration in the friction properties of composition friction elements during wear, an organic metallic compound which does not produce oxides on decomposition by heat and which is decomposed by frictional heat to liberate free metal is included in the elements.  Suitable organic metallic compounds are the formates of lead, bismuth, copper, antimony, tin or cadmium.  Catalysts to control the rate of decomposition of these compounds may be included. A suitable friction element may comprise asbestos, coal, polymerized drying oil, phenol-aldehyde resin, sulphur, a solvent such as a glycol ether, and lead formate.
Patent GB-438871-A (GB)
Title: Improvements in and relating to inverter systems
IPC: H02M7/44
Filed: 1934-02-22
Abstract: 438,871. Converting. BRITISH THOMSON-HOUSTON CO., Ltd., Crown House, Aldwych, London.-(Assignees of Allgemeine Elektricitats-Ges. ; 2, Friedrich Karl-Ufer, Berlin) Feb. 22, 1934, No. 5872. Void [Abridged as open to inspection under Sect. 91 of the Acts, Aug. 25, 1934]. [Class 38 (ii)] The control voltages in an inverter employing discharge devices are obtained from condensers connected between points in the main circuit and the grids. In the form shown in Fig. 1 the grid voltages are obtained from crossconnected condensers and resistances 15, 16 and 17, 18. A switch 19 is provided to facilitate starting. With this arrangement rapid deionization is obtained. In a modification the resistances 17, 18 are connected between the grids and the positive D.C. lead. In further modifications the condensers are connected between the grid and cathodes and are charged through auxiliary rectifiers. Fig. 7 shows a series type inverter in which each grid is connected to the cathode through a condenser 28 and to the anode through a rectifier 27.
Patent GB-416897-A (GB)
Title: Improvements in or relating to turbine driven locomotives
IPC: B61C9/30
Filed: 1934-02-22
Abstract: 416,897. Turbine locomotives. AKTIEBOLAGET LJUNGSTROMS ANGTURBIN, 32, Kungsgatan, Stockholm. Feb. 22, 1934, No. 5876. Convention date, Feb. 23, 1933. [Class 110 (iii).] A turbine locomotive with two reductiongear stages in separate casings has the lowspeed stage situated between the driving wheels while the high-speed stage is arranged at one side of the locomotive and opposite to the turbine which is carried at the other side. The turbine-shaft pinion 15 is divided and meshes with two correspondingly divided gear wheels 16, 17, the shafts 18, 19 of which each have a pinion 20, 21 driving a single gear wheel 22 which engages the final gear wheel 9. The hub of the final gear wheel is hollow to allow ample clearances for the driving wheel axle and the drive is effected through a link connecting the arms 6, 61 on the gear wheel hub and on the axle. A reverse turbine 23 with reduction gear 24, 25 may be associated with the casing of the high-speed stage of the main reduction gearing. The resilient mounting of the toothed rims of the gear wheels relative to the hubs is provided in the high speed gear stage.
Patent GB-257570-A (GB)
IPC: B66C23/36
Filed: 1926-03-02
Abstract: 257,570. Whitehead & Kales Co., (Assignees of Rainsford, T. F.). Aug. 26, 1925, [Convention date]. Driving auxiliary parts.-A winding drum 33 is mounted on the jib of a derrick attachment for Fordson tractors and is driven through worm gearing 38 and a vertical cardan shaft 50 from reversing gear 41. The gear 41 is adjacent to the gear-casing of the tractor, is driven by a shaft extending therefrom, and is controlled by a lever 62 near the driver's seat.
Patent GB-1197417-A (GB)
Title: Conveyor Discharge Mechanism
IPC: B65G17/06
Filed: 1969-02-04
Abstract: 1,197,417. Endless conveyers. DIAMOND INTERNATIONAL CORP. 4 Feb., 1969 [19 April, 1968], No. 5942/69. Heading B8A. Trays 21 pivotally carried between conveyer chains 28, 28, and held in a horizontal altitude by the action of rollers 22 running on rails 20, are turned upside down at a discharge station by the action of a member 11 forming a part of one of the rails 20 and rotatable through 180 degrees in synchronism with the conveyer drive. As described, the conveyer carries egg cartons (not shown) through a drying chamber 30. The member 11 is driven via a mechanism 52, 54, (Fig. 6), which is driven from a shaft 42 of the conveyer drive and is so arranged that the member 11 rotates through 180 degrees in a given time interval, each rotation being followed by a dwell of the same time interval. The conveyer moves continuously, and the time it takes to move a tray through one pitch is equal to twice the given time interval.
Patent GB-664244-A (GB)
Title: Improvements in or relating to thermionic value
IPC: G01R1/30
Filed: 1948-02-27
Abstract: 664,244. Voltage and current measurement; measuring bridges; electric analogue calculating systems. DEPARTMENT OF COMMERCE, DIRECTOR OF THE OFFICE OF TECHNICAL SERVICES OF. Feb. 27, 1948 [Aug. 1, 1945], No. 5954/48. Class 37. A circuit for producing an A.C. output signal whose phase and magnitude is indicative of the difference between two D.C. input potentials, of the type in which the input potentials are respectively applied to the grids of two valves, the valves having a D.C. supply and an A.C. input voltage, is characterized in that the output signal is derived from the secondary of a transformer, the primary of which is connected between the cathodes of the valves. In the circuit shown, the A.C. voltage is applied through a cathode follower stage 56 to the centre point of the transformer and the D.C. potentials, one of which may be a steady reference potential, are applied to the control grids through R.C. smoothing circuits. Resistors 16 and 42 are provided to balance the anode currents and capacitors 32 and 43 maintain the anodes at earth potential for alternating currents. Specification 509,139, [Group XL], is referred to.
Patent GB-776845-A (GB)
Title: Device for resetting a gyroscope
IPC: G01C19/26
Filed: 1955-03-01
Abstract: 776,845. Gyroscopic apparatus. FRANCAIS, ETAT. March 1, 1955 [March 2,1954; Feb. 23, 1955], No. 6058/55. Class 97(3) Caging mechanism for a gimbal-suspended gyroscope includes a first cam unit for locating the outer ring Z, a second cam unit for locating the inner ring (or casing 1), and control means for the units; wherein the first cam unit consists of a cam follower 10 and a cylindrical cam 4 with a hollow 19 defining the resetting position of the outer ring 2, one of the members (e.g. the cam 4) being mounted on ring 2 for rotation therewith and displacement relatively thereto, and the other member is mounted for movement by the control means parallel to the outer ring axis; and the second cam unit consists of a cam follower 18 and a curvilinear cam 9 with a hollow 20 defining the resetting position of the inner ring (or casing 1), one of these members (e.g. the cam 9) being mounted on the inner ring or casing 1, and the other being displaceable which the member of the first unit (e.g. cam 4) which is mounted on the outer ring 2. As shown, the gyroscope rotor is mounted in a casing 1 for rotation about an axis Z, Z<SP>1</SP>. The casing 1 is journalled about an axis Y, Y<SP>1</SP> in the gimbal ring 2, which in turn is journalled about an axis X, X<SP>1</SP> in the instrument housing (not shown). The cylindrical cam 3, having a profile surface 4 extending helically in both directions from the low point 19, is pivoted to the gimbal 2 at 5 about an axis parallel to the axis Z, Z<SP>1</SP>. A return spring 7 anchored to ring 2 at 8 and fixed to an extension 6 of cam 3, urges the cam 3 against an abutment (not shown) on ring 2. Cam 3 also has an extension 17 carrying a rod 16 on which a roller 18 is mounted, When the gyroscope is to be caged, a rod 14 is retracted by means of a knob 15. This rocks a lever 11 about its pivot 12 against the action of spring 13, and forces roller 10 into contact with the profile 4 of cam 3. This causes the gimbal ring 2 to rotate until roller 10 rests in the low point 19 of the cam 3, and at the same time roller 18 is urged into engagement with the surface of a cardioid cam 9; which may be complete, or, as shown in full lines in the drawings, may consist only of part of a cardioid. Cam 9 rotates until roller 18 reaches its low point 20, when the gyroscope is caged. Knob 15 is then released, and lever 11 returns allowing cam 3 also to return to its inactive position. In a modification, lever 11 is fast with a sleeve slidable on an extension of rod 14, and connected by a spring to the said extension. A further modification is described in which the rotor housing is spherical, and is mounted in a part spherical gimbal.
Patent GB-144390-A (GB)
Title: Improvements in and relating to lens adjusting means for folding photographic cameras
IPC: G03B3/00
Filed: 1919-03-12
Abstract: 144,390. Ballantine, A., and Ballantine, R. S., (trading as Lizars, J.), and Watson, W. March 12, 1919. Cameras, baseboard fittings for.-In a lensadjusting means of the type in which a lever on the baseboard is adapted to engage the lens carriage for the purpose of providing a fine adjustment for focusing, the lever g, Figs 1 and 2, pivoted at h, is made of substantial width, preferably having an enlargement or extension at one side g<1> so as to provide a greater range for the position of the stud f which engages the spring plate d under the lens board c. The stud f is not fitted until the lens for the camera has been selected and the lever is reversible so that the widened portion g<1> can be in front of or to the rear of the pivot h. The opposite end of the lever is fitted with a knob l and moves over a focusing scale m. The position for the stud g is ascertained by setting the lever for an object at a known distance. The lever may be slotted to allow the stud g to be adjusted longitudinally.
Patent GB-713041-A (GB)
Title: Methods and apparatus for high frequency induction heating
IPC: B23K13/02
Filed: 1952-03-10
Abstract: 713,041. Welding by pressure. OHIO CRANKSHAFT CO. March 10, 1952 [March 10, 1951], No. 6182/52. Class 83 (4). [Also in Group XI] In apparatus for welding the opposed longitudinal edges 10, 11 of a tubular skelp A, an inductor C heats the edges to welding temperature as the skelp moves relative thereto, and electromagnetic induction means are provided for reducing or eliminating the proportion of stray or return currents which flow through' the supporting and pressing rollers 14, 15 and the metal base 13. The inductor comprises a main conductor 20 surrounded on three sides by U- shaped laminations 31 of high magnetic permeability, and supplied with current through conductors 26, 27, side conductors 21, 22, and end conductors 23, 24. An auxiliary inductor D comprises a ring-like laminated core 37 surrounding the tube A, and a solenoid 36 fed with power at the same frequency as .is supplied to the main inductor. A variab'e resistance 33 and reactance 44 adjusts the magnitude and phase of the sole-. noid current, so that the voltage induced in the tube thereby balances and cancels out the currents 34 flowing through the rollers &c. In Fig. 4 an auxiliary inductor E comprises an elongated loop of one turn supplied at 55 with high frequency power. The upper conductor 50 is closely coupled to the tube and is surrounded by laminations 60 of magnetically permeable material. The inductor increases the flow of return current through the tube walls and thereby decreases stray flow through the rollers &c. The auxiliary inductor E may be positioned beyond one end of the main inductor, or two such short inductors may be used. Alternatively, the auxiliary inductor is of the same length as the main inductor and located opposite it on the other side. of the tube, in which case it comprises a closed loop operating by self-induction. In Fig. 7 a solid elongated rectangular plate of copper F is arranged as shown, and the reactance of the tube wall is thereby reduced, and this reduces the stray current flow through the rollers. Specification 704,389 is referred to.
Patent GB-591099-A (GB)
Title: Improvements in or relating to radio communication systems
IPC: H04K3/00
Filed: 1942-05-07
Abstract: 591,099. Radio transmitting systems. STANDARD TELEPHONES & CABLES, Ltd., CHATTERJEA, P. K., and HOUGHTON, L. W. May 7, 1942, No. 6194. [Class 40 (v)] Radio signals are transmitted, in. an emergency, when strong interference from a source other than the transmitter is present at substantially the normal carrier frequency, as a modulation on a plurality of carrier frequencies dispersed over a wide frequency band, switching over being effected by a device responsive to the interference. Fig. 2 shows an arrangement in which the switch over is effected by the heterodyning of the carrier by the, interference through a low-pass filter 4 operating a relay. In this way a pulse generator may be interposed between the signal and the transmitter. Fig. 1 (not shown) or, as shown in Fig. 2, the amplifier 11 may be fed through a filter from a unit 12 comprising an oscillator modulated by a pulse train which is in turn modulated by the signal from unit 16 to produce a number of amplitude modulated carrier frequencies as described in Specification 582,405. In an alternative arrangement, Fig. 3 (not shown), a single main oscillator is used and appropriate switching is provided to render a band-pass filter operative and insert a pulse generator. Fig. 4 shows an arrangement in which the main oscillator 26 is switched from an amplitude modulator 27, which is replaced by a unit 30, which includes a pulse generator arranged to produce amplitude modulated damped wave trains as described in Specifications 579,126 and 591,098, from which the required carriers are selected by filter 31. An arrangement for generating a short pulse having a repetition frequency which is an exact sub-multiple of the oscillator frequency and modulated in time, Fig. 5, comprises a saw-tooth generator 38 fed with the oscillator frequency and a pulse generator 39 fed with the signal and so controlling an over-biassed amplifier 40, that it passes the oscillation from terminal 41 only during the positive pulses applied from the unit 39. Alternatively a multivibrator circuit may be used to generate the pulses and be synchronized by a sub-harmonic of the oscillation. The normal transmission may be phase or frequency modulated and the emergency transmission may be frequency or phase modulated as well as amplitude modulated. Provision may be made so that the emergency carriers all radiate equal power and the individual carriers may be varied manually or automatically in steps or may sweep through the frequency range by varying the pulse repetition frequency.
Patent GB-1156106-A (GB)
Title: Locking Means for a Door Lock.
Inventor: SPON CARROLL VERN
IPC: E05C1/16
Filed: 1968-02-08
Abstract: 1,156,106. Door latches. NATIONAL LOCK CO. 8 Feb., 1968, No. 6275/68. Heading E2A. A door lock comprises an inner knob and an outer knob connected to a sleeve and tube respectively and a push button actuated spring loaded sliding locking bar with a lateral leg which is slidable in a slot in the tube and is projected into a slot in a stationary housing when the push button is actuated to render the outer handle inoperative. The lock has an inner and outer knob 10, 13 and a latch bolt with a housing 73. A housing 31 has journalled one end of the .slotted tube 12, the knob 10 being anchored to the other end. The inner knob 13 is mounted on a split sleeve 14, an inner concentric tube 27 projects through the sleeve 14 and the housing into the tube 12. The sleeve 14 is connected by detent 19 to the inner tube 27 for rotation together and the tube 12 has a projection 35 which engages a groove in the tube 27 for limited relative rotation. Tubes 12 and 27 are slotted for passage of the latch bolt slider 71 and the latch bolt is retracted by rotating either tube and thereby rocking a spring loaded push plate 55 in contact with the latch slider to depress the slider and release mechanism to withdraw the bolt. The locking bar 41 is slidable in the tube 27 and has a lateral leg 47 slidable in the slot 15 of the tube 12 when the bar is projected to its inner position by pressing the push button. The leg 47 engages a slot 51 in an end wall of the housing and retains the outer knob against rotation. A tooth 54 on the locking bar engages in a slot in the push plate and holds the locking bar in its inner position. The locking bar is released by rotation of the inner knob thereby disengaging the tooth from the pushplate.
Patent GB-565847-A (GB)
Title: Improvements in shuttering for use in concrete construction and for lining trenches,excavations and the like
IPC: E02D17/08
Filed: 1943-04-20
Abstract: 565,847. Moulding concrete walls &c. in situ. FLEXO PLYWOOD INDUSTRIES, Ltd., and CONYARD, H. J. April 20, 1943, No. 6309. [Class 20 (ii)] Shuttering for moulding concrete structures in situ comprises panels 10 of metal-faced plywood, reinforced on one face by channel or angle irons 14 extending along all edges and optionally along the diagonals or along intermediate lines parallel to the edges. The angle irons are jig-drilled so that the panels may be coupled by bolts to form a continuous surface. The panels are metal faced, e.g. by galvanized steel sheets 12, on both faces, the sheets being turned over to enclose the-edges, and the angle irons 14 are secured by rivets 15 with countersunk heads 17. After wear or deterioration of the working face, the stiffening members 14 may be transferred to that face, thereby providing a new, unused, working face. The shuttering may be used to line excavations. Rectangular stanchions may be cast by coupling the corner panels by hook bolts 20, Fig. 4. The panels may be formed with curved working faces for use when casting columns &c.
Patent GB-1103691-A (GB)
Title: Improvements in and relating to timing devices for controlling the programme of operation of a machine
Inventor: MARCEL JEAN-PIERRE
IPC: H01H43/12
Filed: 1965-02-15
Abstract: 1,103,691. Time switches. CONTROLS CO. OF AMERICA. 11 Feb., 1966 [15 Feb., 1965], No. 6426/65. Heading H1N. A timer for a washing-machine comprises a master motor 20 which actuates a rotor 44 via gearing, a cam 31 and a stepping pawl 40 carried by a lever 34. The rotor 44 is connected via gearing 45a and 47, to a cam controlling contacts 55, 60, 61 and 57, 62, 63 in the circuit of a slave motor (21) driving a cam bank (12) actuating switches (not shown) controlling functions of the washing-machine. The rotor 44 and cam bank (12) are coaxial but relatively rotatable. A toothed wheel 30 of the cam bank pivots a lever 74 clockwise to close contacts 81, 82 in a maintaining circuit for the motor (21). At the same time, pawl 40 and a restraining pawl 73 are lifted away from rotor 44 which is swung back to its initial position by a spring 85, thereby re-opening the contacts controlled by cam 51. Cam bank (12), however, rotates until contacts 81, 82 re-open when a follower 75 on lever 74 drops off a tooth 30a on wheel 30. In a modification (Figs. 6, 7, not shown), the motor 20 continuously drives a wheel (90) having ratchet teeth (90a), which act on the lever 74 which overlaps wheels 90 and 30 so that switch 81, 82 is closed by a tooth (90a) and released by a tooth 30a. Reference has been directed by the Comptroller to Specification 1,008,352.
Patent GB-603579-A (GB)
Title: Improvements in or relating to the use of voltage doubling circuits for alternating electric currents
IPC: H02M7/10
Filed: 1945-03-14
Abstract: 603,579. Converting. STANDARD TELEPHONES & CABLES, Ltd., and JACOBSEN, B. B. March 14, 1945, No. 6447. [Class 38 (ii)] In a rectifying circuit, which may be used for giving a steady deflection of the beam in a cathode-ray tube proportional to the A.C. voltage, a number of A.C. sources are each connected to the input terminals of one or more rectifying voltage doublers, the output terminals of which are in series so as to provide a combination of rectified voltages, each proportional to the voltage of one of the sources. Fig. 1 shows two voltage doublers 5, 6 supplied in parallel from an A.C. source 1, 2, through blocking condensers 7, 8 and 51, 52. Each consists of two parallel branches containing rectifiers 11, 12 and rectifiers 13, 14 in. series with resistances 15, 16 shunted by condensers 17, 18. Their output terminals 19, 20 are connected to the output terminals of a third voltage doubler 43 in voltage opposition thereto so that the D.C. voltage across output terminals 3, 4 is the sum of the outputs of 5 and 6 less the output of 43. Voltage doubler 43, which comprises two parallel branches consisting of rectifiers 47, 48 in series with resistances 49, 50 shunted by condensers 51, 52, is fed at 2, 45 from another A.C. source which may be of different voltage and frequency from the first. Different combinations of outputs may be arranged. In a modification, voltage doublers balanced with respect both to input and output, Fig. 2 (not shown) may be connected singly or in groups across a number of different A.C. inputs, the outputs being connected in series as desired. The rectifiers used may be of the copper-oxide or selenium type, diodes, or amplifying valves.
Patent GB-1491806-A (GB)
Title: Backsaddles
IPC: A45F3/04
Filed: 1975-02-14
Abstract: 1491806 Knapsacks H SIMON and K JAEGER 14 Feb 1975 [15 Feb 1974] 6484/75 Heading A4G A back saddle 1 comprises a closable back bag 3, a knapsack 4 attached to the back bag, and straps 2, 5 that can be passed about the waist and shoulders of a person. As described the bag 3 is of waterproof plastics material, is closable by a zip 15, and carries the waist straps 2. The top 7 of the bag constitutes the bottom of the knapsack 4 which may be of nylon. The straps 5 are releasably secured by clips 6 to eyelets 14 on the bag 3, and when the straps are released and the knapsack is folded the entire knapsack can be contained in a pocket on the top of the bag 3 formed by flaps 8, 9, which are secured in their closed positions by a zip fastener 10. Press-studs 11, 12 secure the ends of the fastener 10 to the bag.
Patent GB-1262353-A (GB)
Title: A lamp bracket assembly for an aquarium lamp reflector
IPC: F21W131/308
Filed: 1969-02-06
Abstract: 1,262,353. Aquaria. AQUARIUMS Inc. 6 Feb., 1969 [13 Feb., 1968], No. 6496/69. Heading A1A. [Also in Divisions F4 and H2] A lamp assembly for illuminating an aquarium comprises a reflector 6 which fits onto the aquarium tank and a bracket of insulating material which is mounted in an aperture in the reflector and which supports the lamp socket 30 inside the reflector at the end of two limbs 32, 34 and a rotary switch 90 outside the reflector where it is not affected by corrosion due to moisture. A hole 24 in the body of the reflector allows the passage of electrical wires 25, 27 from the switch to the lamp socket. The bracket is made of an hydrophobic plastics material such as polyethylene, polyvinyl chloride or nylon, and it is fixed to the reflector by means of plastics pins passing through holes in the reflector.
Patent GB-1526781-A (GB)
Title: Wheel-chairs
IPC: A61G5/00
Filed: 1976-05-14
Abstract: 1526781 Wheel-chairs LAWRENCE WILSON & SON Ltd 14 May 1976 [15 Feb 1975] 6508/75 Heading A4J [Also in Division B7] A wheel-chair having an adjustable back portion 30, 68 is provided with one or two supports 46, 74, 76 for "frog leg" plaster casts. In Fig. 1, the back, seat and leg rest portions 30, 32, 34 are adjustable from a position in which they all lie in the same plane to, for example, the position shown. Each support 46 comprises a telescopic pillar 46A rotatably mounted on a crossmember 44 slidable on the frame 4 and an arcuate member 46B universally jointed to the pillar. Alternatively, supports may be removably and adjustably secured to a metal strap overlying the seat portion 32. In Fig. 4, supports 74, 76 are removably secured to the frame 60. A table 88 is adjustably mounted on the frame and a cloth 84 directs urine from a boy into a pan carried by a tray 96.