baber/WOPTO huggingface dataset:
Patent GB-793080-A (GB)
Title: Electrical cam switch
IPC: H01H19/08
Filed: 1956-03-20
Abstract: 793,080. Cam-operated switches. BUSCHJAEGER DURENER METALLWERKE AKT.-GES. March 20, 1956 [March 30, 1956], No. 8724/56. Class 38 (5). A switch has radiallycontrolled contact levers in rows parallel to the camshaft, the levers being arranged with their contacts and bearings in recesses formed in two flat insulating base members extending opposite to one another parallel with the shaft. The base members 1 are held spaced from each other by bearing- plates 8 which support the cam-shaft 11a. The contact levers 4 are integral with terminals 6 and cooperate with fixed contacts 6c. The terminals 6 have bent-over ends which are sprung into parts 3c of apertures 3b which open out of recesses 3 in the opposed faces of members 1, the terminals being held in position by clamping springs 6a. The recesses 3 of each row may be opposite one another, Fig. 2, or staggered (Fig. 3, not shown). The switch is made dust-proof by insulating-plates 5 sprung into grooves 1d in the base members. An indexing mechanism extends into recesses 1e in the base members.
Patent GB-558360-A (GB)
Title: Improvement in engine starter gearing
IPC: F02N15/06
Filed: 1942-06-25
Abstract: 558,360. Turning-gear. BENDIX AVIATION CORPORATION. June 25, 1942, No. 8740. Convention date, July 19, 1941. Addition to 553,611. [Class 7 (v)] An engine starter drive comprises a pinion 8 slidably journalled on a power shaft 2 and on a screwed sleeve 6 secured thereto and moved axially into engagement with an engine gear 9 by a nut 12 threaded on the sleeve 6, a rubber or like annulus 13 between flanges on the nut and pinion being compressed to transmit torque by friction when the pinion abuts a stop shoulder 4 on the shaft 2. When the engine becomes initially self-operative, a centrifugal latch 17 mounted in the sleeve 6 holds the pinion in mesh with the engine gear until the speed of the shaft falls below a predetermined value, while the nut 12 releases its pressure on the annulus 13. As shown, the latch 17 is normally held flush with the surface of the sleeve 6 by a split spring ring 18, Fig. 4. The annulus 13 and the flanges on the pinion and nut are enclosed by a sleeve 14. In a modification, the enclosing sleeve has a flange engaging the teeth of the' pinion, and the rubber annulus has an inwardly projecting portion bearing on the nut.
Patent GB-1018976-A (GB)
Title: Improvements in or relating to circular saws
Inventor: ROWSON FRANK
IPC: B24D18/00
Filed: 1963-03-06
Abstract: 1,018,976. Making circular saws; welding by fusion. LANCASHIRE SAW CO. Ltd. March 3, 1964 [March 6, 1963], No. 8871/63. Headings B3A and B3R. In a method of making a circular saw, negative tension is applied by hammering or rolling the sides of the disc 10 between slots 18, where indicated by dashes 23. Pieces of " Stellite " (Registered Trade Mark) or other hard material are welded to the disc periphery between the slots 18. The disc is placed in a clamp 28 (Fig. 4, not shown) and the Stellite segments 26 rest on supports 40. A deposit rod of Stellite is melted with a carburizing flame so that it is bonded to the disc 10 and welded to the segments 26. The disc may be of low carbon steel, stainless steel or any other suitable material. When cool the negative tension will be counteracted by the difference in contraction rate between Stellite and steel. The sides of the saw are finally ground and teeth cut into the rim if required.
Patent GB-914429-A (GB)
Title: Improvements in or relating to sleeping bags
IPC: A47G9/08
Filed: 1959-03-13
Abstract: 914,429. Bedsteads; mattresses. PRICE, J. E. E. March 11, 1960 [March 13, 1959], No. 8875/59. Classes 52 (2) and 52 (4). [Also in Group XVII] A camp bed comprises a base 1, an upstanding end flap 2 at its foot, side flaps 3, 4 having sliding-clasp fasteners 13 and a rolled-over extension 6 at its head with end panels 8 forming a pillow pocket 7. A blanket sewn into the bag along its edges forms a lower pocket into which an air mattress is inserted and an air bolster in the pocket 7 may be in one piece with the mattress. The flap 4 is secured to the flap 2 by press fasteners 23, and a free part of the head extension 6 forms a canopy supported by an inflatable tube 25. A collapsable bed frame consisting of spring legs 36, Fig. 5, fitting into unions 33 on rods 31 may be attached to the base by loops 30.
Patent GB-195643-A (GB)
Title: Improvements relating to the combustion of smoke in locomotives and like engines
IPC: F23L7/00
Filed: 1923-03-29
Abstract: 195,643. Huwyler, O. March 29, 1922, [Convention date]. Steam, supplying.-For consuming smoke and gases arising from the fire of locomotive and like fire-boxes, steam is injected over the fire through a centrally-disposed pipe 3 provided with three rows of holes, the holes of the central row being larger than those of the lateral rows, so as to project more powerful steam jets over the centre of the fire than towards the sides thereof.
Patent GB-128532-A (GB)
Title: Improved Means in connection with Strainers for Fluids.
Inventor: CHORLTON FRANK OSCAR LEVI
IPC: B01D35/12
Filed: 1919-04-10
Abstract: 128,532. Chorlton, F. O. L. April 10, 1919. Filters and strainers having sheet filtering or straining materials.-In apparatus employing multiple strainers rotary means comprising pin- and-slot connexions are provided so that, when one strainer is withdrawn or put out of action, another strainer is prevented by an intervening star-wheel device from being removed or put out of action. With the apparatus shown, strainers e are each attached at one end to a lid d and at the other to a ring f mounted on the outer surface of the upper part g of a grid valve, the lower part h of which is fixed to, or forms part of, the casing. The casing has an inlet b and outlet c. Lugs f<1> on the rings f engage slots on the grid portions g, so that the rings and grids can rotate together. The left-hand strainer is shown in the operative position. When the right-hand strainer is rotated to open its grid valve, its lid d gives slight rotation to a star-wheel k and thereby frees the lid d of the left-hand element so that it can be turned to close its own grid valve and dis-engage a pin j from a groove i in the lid. This lid and strainer can then be removed, the right-hand element being locked in place. The lids d may be connected by rods to the rings f, the strainers being loosely mounted in the lids and rings. When three strainers are used, the movement of the central element may lock the outer ones in position.
Patent GB-541217-A (GB)
Title: Improvements in appliances for use in connection with the game of bowls
IPC: A63F7/24
Filed: 1940-05-27
Abstract: 541,217. Mallets for games. TISSHAW, W. A. May 27, 1940, No. 9287. [Class 132 (ii)] A mallet for use in collecting the "woods" used in the game of bowls, or for playing a game by driving the woods towards the jack is provided with a head 1 having one or more transversely curved and overhanging resilient impelling faces 4. The mallet may be stood up on its end face to allow the user the grasp the handle without stooping. The head may be in the form of a truncated pyramid and the concave faces may be roughly of semioval shape. The impelling faces may consist of detachable pads recessed into the head, or the head may consist of a block of rubber or other resilient material.
Patent GB-1531804-A (GB)
Title: Oil separation method
IPC: B01D17/022
Filed: 1976-03-09
Abstract: 1531804 Separating oil and water; coated particles BRITISH PETROLEUM CO Ltd 28 Feb 1977 [9 March 1976] 09311/76 Headings BID and B2E [Also in Division Cl] Oil is separated from water contaminated therewith by passing a contaminated water stream through one or more purification beds containing solid particles treated with solution of a dispersant additive and a hydrocarbon activating agent. The particles may be of anthracite, charcoal, vermiculite, sand, glass beads, polystyrene, polyethylene or polypropylene. Dispersant additives are additives used in the formulation of lubricating oil, serving to maintain contaminants in fine suspension and prevent them from coagulating. They include (a) copolymers containing a carboxylic ester function and one or more additional polar functions (b) hydrocarbon polymers treated with various reagents to introduce polar functions (c) N-substituted long chain alkenyl succinimides (d) high molecular weight amides and polyamides (e) high molecular weight esters and polyesters (f) amine salts of high molecular weight organic acids, and (g) branched chain alkyl or aralkenyl polyamines in which the alkyl or alkenyl group has a number average molecular weight of 300 to 2100 and which has a total base number of at least 200. Preferred dispersants additives are polyisobutenyl diethylene triamine, polyisobutenyl triethylene tetramine and polyisobutenyl tetraethylene pentamine. Hydrocarbon activating agents include gasoline, naphtha, kerosene, light gas oil and heptane. In a preferred embodiment, the contaminated water stream is first filtered, and through the beds and then the coalesced oil droplets and water are allowed to separate by settling. Anthracite particles, pre-treated by reaction with diazomethane to convert labile hydrogen atoms to methyl groups, and then treated as above, are preferred. Suitably the water flows through the beds at an angle thereto, as where the direction of flow is horizontal and the beds are mounted vertically. Suitable apparatus comprises a container with an inlet and an outlet and one or more purification beds disposed between plates having passages therethrough, and a settling zone positioned after the last bed in the direction of flow of liquid through the container. A filter may be positioned upstream of the container and the settling zone may have two outlets, one for the discharge of oil and one for the discharge of water.
Patent GB-1450009-A (GB)
Title: Sterilization of a tube of material
IPC: B65B55/08
Filed: 1975-03-06
Abstract: 1450009 Irradiation with ultra-violet light ZIRISTOR AB 6 March 1975 [11 March 1974] 9363/75 Heading B8C [Also in Division H5] In a packaging machine in which a substance is packed in a material initially in the form of a continuous tube 1, the tube 1 is internally sterilized by irradiation with ultra-violet light from a source 4 such as a bi-filar helical mercury vapour lamp. The substance to be packed is introduced through a filling tube 2. Air is introduced through a tube 3 and deflected by a flange 8 to remove ozone. A reflector 5 can be provided. Flanges 6 and 9 protect the substance from the ultra-violet light. The source 4 is protected by an envelope 7 of helical wires arranged not to obstruct the radiation over any particular area.
Patent GB-141068-A (GB)
Title: Improvements in or relating to percussive tools
IPC: B25D17/00
Filed: 1920-03-31
Abstract: 141,068. Malleable Iron Fittings Co., (Assignees of Pickop, G. D.). Aug. 21, 1915, [Convention date]. Cylinders; pistons.-The body parts of reciprocating-piston vibrators used in foundries to facilitate the removal of patterns from sand moulds are cut from hexagonal steel bar or other stock. The body 10 is provided with an eccentrically-placed cylindrical bore 11 closed at the ends by caps 12, 13 cut from hexagonal stock. The piston is normally held to the right by a spring 14<c>, and is provided with end stops 14<a>, 14<b>.
Patent GB-241801-A (GB)
Title: Improvements in upholstery padding
IPC: B68G7/00
Filed: 1925-04-08
Abstract: 241,801. Millar, J. R. April 8, 1925. Wadding. -An upholstery padding material comprises an outer cover of flexible material, such as long stapte cotton and a short-fibred filling of jute, cotton waste, or similar material. A longitudinal reinforcing strip 3 of paper is provided which may be within the core 2, and secured by adhesive, or may lie between overlapping edges of the outer cover 1, as shown in the Figure, or may overlap both edges of the cover when these meet with a butt joint.
Patent GB-752379-A (GB)
Title: Improved rotary multi-point electric switch
Inventor: PALMER ERIC SYDNEY
IPC: H01H19/56
Filed: 1954-03-31
Abstract: 752,379. Mechanical switches, without quick action. PATON ELECTRICAL PROPRIETARY, Ltd. May 24, 1954 [March 31, 1954], No. 9455/54. Class 38(5) A rotary multi-point electric switch comprises two banks.of stationary contacts 14, 19, each bank of contacts being arranged around a circle, and a rotatable contact 22 which is movable within the space defined by the stationary contacts 14, 19 and which is arranged to bridge the gap between corresponding stationary contacts in the two banks, the movable contact 22 being urged towards -the edges of the stationary contacts by a spring 26. The movable contact 22 is curved and is arranged to slide along a tongue 24 formed in an insulating carrier plate 12. More than two banks of stationary contacts may be used, the sector length of the member 14 being made to any desired dimension. There may also be more than one movable contact arranged on the carrier plate 12. A positioning device of the ball and detent type may be incorporated.
Patent GB-618779-A (GB)
Title: Improvements in or relating to electrical resistance contacts operable by external pressures
IPC: H01H1/00
Filed: 1946-03-27
Abstract: 618,779. Loose - contact microphones. KESSELRING, F. March 27, 1946, No. 9466. Convention date, April 3, 1945. [Class 40 (iv)] [Also in Group XXXVI] A contact resistance applicable for microphones consists of a concave member surrounding a convex member of nearly the same radius of curvature. A cylindrical bar 1, Fig. 1, is fitted in a slightly larger cylindrical groove in a contact carrier 2 pivoted at 5. When the applied pressure P is very small, the contact surface is a straight line; when it increases, this line becomes a rectangle. In a modification, Fig. 2, a sphere 3 is fixed and a movable element 4, pivoted at 6, has a spherical cavity. Ellipsoids or other forms of contacting members may be employed. The contacting surfaces may be smoothed and hardened by repeatedly applying a contact pressure higher than that occurring in normal operation so as to flatten out uneven spots. The contacting members are so mounted that the same points on their surfaces always contact with each other. The contact points may be enclosed in an hermetically closed casing or immersed in an inert liquid such as high-grade oil. For low resistances the contacts may be of silver, platinum, or nickel; steel, tungsten, tantalum or platinum-iridium may be used for medium resistances. Carbon or graphite, particularly electrographite, is suitable for high resistances. The load should be kept sufficiently low throughout the range of contact resistance to ensure that the point of contact is far below the softening point. Artificial cooling may be employed for higher loads.
Patent GB-893561-A (GB)
Title: Improvements in or relating to circuit arrangements for receiving audio frequency control signals provided with audio prefix signals, for use in telecommunications systems
IPC: H04Q3/00
Filed: 1959-03-18
Abstract: 893,561. Automatic-exchange systems. SIEMENS & HALSKE A.G. March 18, 1959 [March 18, 1958], No. 9468/59. Class 40 (4). In an arrangement for receiving VF signals the receipt of a prefix signal of sufficient duration brings about the association with the signal path of common apparatus for receiving and dealing with the ensuing control signals. As shown, an incoming line L is coupled inductively to switching apparatus VF and is bridged by a resonant circuit RK tuned to the frequency of the prefix signal. The presence of this frequency on the line therefore charges two condensers C1, C2, the latter being located in common apparatus. If the signal endures for 50 mins., say, the charge on C2 is such that transistor Tr2 is effective to operate start relay An which causes a finder S to hunt for the line L, the charge on C1 being detected by transistor Tr3. Although the finder is shown as a wiper-switch it may be a relay switch, an electronic switch or a crossed-coil switch. Relay P energizes and a voice-immune receiver VSE is connected up to receive the remainder of the prefix signal, relay VE being operated, followed by V. At the end of this signal VE falls back and D is operative during the release time of V to connect up a receiver TSE for the ensuing control signal, which is transferred in D.C. form to a register ZS. Relay T energizes and biases a diode TD to block the line. The receiver TSE sends a signal to a marker M and if necessary controls a transmitter ZD to send forward VF signals. If, however, the received signal is a backward one, relay W is energized as well as T and the transmitter ZD sends VF signals over the incoming line L. The system may be one employing carrier working.
Patent GB-725595-A (GB)
Title: Mounting for automatic guns
IPC: F41A27/08
Filed: 1953-04-08
Abstract: 725,595. Gun mountings. VERWALTUNGSGES. DER WERKZEUGMASCHINENFABRIK OERLIKON. April 8, 1953 [April 10, 1952], No. 9582/53. Addition to 684,723. Classes 92(1) and 92(2). The invention of the parent Specification is improved or modified by arranging the training, elevating, and levelling axes to intersect at one point level with the pivotal axis of the gunner's trunk, by arranging the cradle to pivot on the gun base at one front and one rear pivotal point of which at least the front bearing point consists of an arcuate guide and by providing the shoulder rests 12 with extensions 19 carrying hip plates 20. In the construction shown, the mounting 3 for the cradle 5 is pivoted by a pin 7 to a base 2, which can be trained about a fixed baseplate 1, and carries rollers 8 which embrace an arcuate guide on the base. The gun is provided with an aiming arm 10, parallelogram rod assembly 13, sight 11, and elevating gear 14 which can be locked to a segment 15, as in the parent Specification. Spent cartridge cases from the gun pass down shoots 22 and are received by bins 21. In a modification, Figs. 4 to 6 (not shown), the mounting 3 carries rollers 8 both at its front and rear for engaging front and rear arcuate guides on the base 2, the pivot pin 7 being dispensed with.
Patent GB-775180-A (GB)
Title: Improvements in or relating to roof bars for use in underground mines
Inventor: HANMAN JACK
IPC: E21D17/086
Filed: 1954-04-01
Abstract: 775,180. Mine roof supporting bars. COAL INDUSTRY (PATENTS), Ltd. April 1, 1955 [April 1, 1954], No. 9598/54. Class 20(2) An I-sectioned mine roof bar 10, Fig. 1, adapted to be connected end-to-end to a similar roof bar 11, comprises at one end two claws 15 having in their under sides recesses to receive projections 18 on the opposite end of the roof bar 11 as this is swung up into alignment with the bar 10, the claws 15 being secured one on each side of the vertical web and fitting closely between the top and bottom flanges with their lower surfaces substantially co-planar with the upper surface of the bottom flange, the ends of the bar being parallel to each other and cut at an angle, for example about 30 degrees to 45 degrees, so that the upper flange extends beyond the bottom flange at the end where the claws are situated, and a locking member 13 being provided which slides longitudinally of the bar in a guide 12 on the underside so that it can be extended to engage sockets 16, 17 at the end of the bar 11. A lip shield rest 21, Fig. 2, for a lip shield 28, which can be detachably secured to the end of the bar, is provided with an abutment 22 and a transverse web 25 adapted to engage the roof bar, and has an apertured flange adapted to extend between the claws 15 so that a tapered cotter pin 26 can be passed through the apertures to secure the lip shield rest 21 in position.
Patent GB-311318-A (GB)
Title: System for the transmission of signals with modulated carrier currents
IPC: H04B3/14
Filed: 1929-03-25
Abstract: 311,318. Siemens & Halske Akt.- Ges. May 9, 1928, [Convention date]. Wired wireless systems. - In an electric signalling system employing modulated carriercurrents on line wires L, phase retardation of the various frequency components is equalised by correcting devices P1, P2 inserted in the lowfrequency terminal circuits of the system, between the transmitter A and the modulator M, or between the demodulator D and the receiver B. Preferably only the upper side band is transmitted along the line L. Additional correcting devices may also be inserted in the line L. The arrangement may be applied to multiplex systems using different carrier frequencies, and to systems employing ordinary low-frequency transmission conjointly with carrier transmission.
Patent GB-1322686-A (GB)
Title: Apparatus for analysing particles suspended in a liquid
IPC: G01N15/12
Filed: 1972-03-01
Abstract: 1322686 Electro-chemical analysis LICENTIA-PATENT-VERWALTUNGS-GmbH 1 March 1972 [10 March 1971 11 Sept 1971 15 Jan 1972] 9604/72 Heading G1N Apparatus for Coulter-type particle analysis comprises two orifices in series as shown in Fig. 1, with a coaxial sample-feed-nozzle as described in Specification 1271708. This provides improved hydrodynamic focusing in the second orifice and enables particles with different volumes, or shapes or deforming properties may be determined by the relative amplitudes and/or durations of the pulses derived from the two apertures. The apparatus is particularly suitable for the estimation of lencocytes and erythrocytes in the blood. Erythrocytes are elastic and change shape due to pressure of the "focusing" electrolyte (see 15 in Fig. 2, (not shown)). Construction Fig. 3 The orifices 5, 7, and the jet 17 (formed by drilled sapphires) may be held co-axially and spaced on a wire while being mounted by melting into a glass tube 22. The tube has a conical outer surface to mate with holes inthe partitions 2, 3. Alternatively the partition 2 may be omitted and the electrode 10 mounted in the chamber 6.
Patent GB-472950-A (GB)
Title: Improvements in railway rail joints
IPC: E01B11/30
Filed: 1937-04-05
Abstract: 472,950. Railway rail joints. SLYDER, M. April 5, 1937, No. 9652. [Class 104 (ii)] A rail joint comprises a pair of fishplates, of which one is integrally formed with a bridging member 19 adapted to be received in recesses 11, 9 in the rail webs and heads and to rest on a separate block 21 supported by shoulders 12 at the foot of the recesses 11. The rail flanges are cut away at 13 to provide clearance between the flanges and the lower portions of the fishplates to permit adjustment of the latter towards the rails to take up wear, The contacting surfaces 36, 35 of the rails and fishplates have complementary curved portions, so that when the fishplates are tightened they will be wedged between the heads and flanges of the rails.
Patent GB-399797-A (GB)
Title: Improvements in or relating to thermionic valves and the like and processes for the manufacture thereof
IPC: H01J19/74
Filed: 1932-04-04
Abstract: 399,797. Thermionic valves. MARCONI'S WIRELESS TELEGRAPH CO., Ltd., Marconi House, Strand, London.- (Assignees of Snow, H. A. ; Mountain Lakes, Morris, New Jersey, U.S.A.) April 4, 1932, No. 9661. Convention date, April 3, 1931. [Class 39 (i).] A process for the exhaustion of a thermionic valve having a plurality of metallic electrodes one of which wholly or partly surrounds another, and is of higher resistance material than the inner electrode, or consists of a foraminous metal body, is characterized by :the step of placing the valve in the field of an induction furnace, the frequency of which is such that having regard to the resistances of the electrode, and screening effect of the outer upon the inner electrodes, the temperature rise of the electrodes is caused to be substantially the same. The valve manufactured may have an indirectly-heated cathode, a control grid and screen grids on both sides of an anode. The outer screen may be formed of material known under the registered Trade Mark "Nichrome," or may consist of perforated sheet metal, as shown in Figs. 2 and 3, or of woven wire or ribbons, as shown in Figs. 4 and 5.