baber/WOPTO huggingface dataset:
Patent GB-582672-A (GB)
Title: Snap springs
IPC: H01H5/30
Filed: 1944-08-16
Abstract: 582,672. Springs. BOYNTON, E. S. Aug. 16, 1944, No. 15619. [Class 108 (iii)] A dished disc spring giving a snap action, particularly for use as an electrical contact element of a circuit-breaker, comprises a spring member 11 having radially - extending legs, and a retaining means for the spring member consisting of a closed rigid ring 10 having a groove 12 in its inner periphery, the maximum diameter of the groove being less than that of the spring member so that the latter assumes a bowed configuration when positioned with the extremities of its legs in the groove. The ring 10 may be provided with an entering slot for the legs the parts on each side of the slot, after the spring member is positioned in the ring being crimped to prevent separation of the spring member and ring. The spring member may be supported from a shaft secured through the aperture 18 and the ring 10 may be movable relatively to the shaft, through the action of the spring member, so as to serve as a movable contact of a circuit-breaker &c. Alternatively, the ring 10 may be fixed and movement of the spring member utilized by the shaft. The spring member may be formed from beryllium copper, phosphor bronze, stainless steel &c. or from thermostatic or bimetallic material so that variations in temperature cause it to snap from concave to convex form or vice versa. The ring 10 may be of silver or other material having a high conductivity or of brass or other base metal, silver plated or otherwise silver coated and a flexible conductor may be brazed to the ring to transmit current from the ring to a binding-post or the like.
Patent GB-156236-A (GB)
Abstract: 156,236. Newark Watch Case Material Co., (Assignees of Milne, A.). March 9, 1916, [Convention date]. Clocks, mounting and supporting. - A holder for watches comprises a body portion constructed of a single piece of sheet metal stamped to form the annular flange 15, inclined wall 16, and the back portion 17, and a bezel-engaging ring 18, hinged to the wall 16. The ring 18 is provided with a projection 22 which, when in the closed position, enters the aperture 23 in the wall 16 and is locked by a latch operated by the trunnion 25. The pendant of the watch projects through notches 21 in the wall 16 and ring 18. The flange may be secured direct to the dashboard of a motor-car &c. or provided with a hinge for attachment to a pair of legs &c. In a modification shown in Fig. 9 the holder is constructed with a flange 30 from which projects an open cuplike receptacle 31. The watch is enclosed by a spacer 34 attached to the back of the flange. The casing may be lined to absorb vibrations, &c.
Patent GB-575600-A (GB)
Title: Improvements in or relating to fuel injection valves for internal combustion engines
IPC: F02M53/04
Filed: 1944-08-16
Abstract: 575,600. Fuel injectors. SULZER FRERES SOC. ANON. Aug. 16, 1944, No. 15633. Convention date, Feb. 17, 1943. [Class 7 (iii)] A liquid-fuel injection valve comprises a nozzle cooled by a surrounding jacket, the casing 11 of which has an inverted flange 12, which is pressed or shrunk on to the nozzle body to seal off the cooling space from the combustion chamber. The casing may be assembled by inverting the nozzle and heating the casing with a soldering lamp. It may be assembled cold by providing a tapering end to the nozzle body 5 and forcing the flange 12 thereon. The flow and return passages 3, 4 and the space 13 should have a constant cross-sectional area for the passage of the cooling liquid which may be oil or water. In the latter case, the casing should be made of stainless steel, copper, or a non- corrodible aluminium alloy. The passages 3, 4 and the fuel passages in the parts 1, 5. are aligned by a dowel pin.
Patent GB-561375-A (GB)
Title: Improvements in or relating to optical objectives
IPC: G02B13/02
Filed: 1942-11-09
Abstract: 561,375. Optical objectives. TAYLOR, TAYLOR, & HOBSON, Ltd., and HOPKINS, H. H. Nov. 9, 1942, No. 15767. [Class 97 (i)] An objective for profile projection comprises a field member A and a divergent front member of negative Petzval sum located in or near the front focal plane of the field member, in conjunction with a small stop B (or its equivalent) located substantially in a position at which rays parallel to the axis entering the objective from the rear come to a real focus on the axis, the field member being corrected for astigmatism and distortion with respect to such stop position, and the combination being corrected for chromatic aberrations and giving a substantially flat image field. The field member A may be a doublet, as shown, or a separated triplet comprising a divergent component located in front of or between two convergent components. The projection object may be located in a plane C and be illuminated by a lamp D and collimator E to produce a profile image on a screen F or in an eyepiece. Conditions relating to surface radii, powers, and AbbÚ V numbers, and complete data for three examples, are set out.. Specifications 444,350, 550,754, 560,541 and 560,611 are referred to.
Patent GB-165648-A (GB)
Title: Improvements relating to handles for tools
IPC: B25G3/24
Filed: 1920-06-10
Abstract: 165,648. Holt, F. A. June 10, 1920. Fixing by self-grip sockets and tangs; reversible handles; hollow handles. - A handle for screwdrivers and other tools comprises a cylindrical member 1, preferably milled or roughened, provided with a tubular nipple 2, 3 at one or both ends, and a pin 7 located in an inclined slot 8 in the wall of the nipple, one end of the pin bearing upon the half-round tapered tang 4 of the tool, and the other end projecting beyond the surface of the nipple and having a locking engagement with the inner surface of the handle. The outer end of the nipple is of approximately the same diameter as the handle, the inner end 6 being smaller and fitting snugly into the bore of the handle. An annular shoulder 11 may be formed on the nipple to abut against an annular shoulder 13 on the tool, preventing too tight a wedging action of the pin, which bites into the handle, as shown at 12, and prevents rotation of the nipple.
Patent GB-1126079-A (GB)
Title: A heat dissipator for an electric circuit component
IPC: H01L23/40
Filed: 1966-04-07
Abstract: 1,126,079. Semi-conductor devices. SOC. ANON. DES USINES CHAUSSON. 7 April, 1966 [7 April, 1965], No. 15779/66. Heading H1K. A heat dissipator for an electric circuit component comprises a plate provided with a mounting region for the component and having a wire fixed to its surface at discrete locations spaced along the wire and across the plate, the wire extending away from the plate and back to it between each pair of adjacent fixing locations. As shown, Fig. I, a transistor 3 is mounted at the centre of a heat dissipator which comprises a plate 1 to both faces of which are attached helical coils 5 of wire. The coils are circular and are of circular section wire. The plate and the wires are of aluminum and are hard-soldered together by providing either the plate or the wires with a coating of aluminium-silicon alloy, pressing the parts together and heating to melt the alloy. In a modification the coil may have rectangular turns and be of square-section wire, Fig. 4 (not shown). The coils may be replaced by wires bent to form a plurality of spaced rectangular undulations joined by rectangular loops arranged perpendicularly to the undulations and bonded to the plate, Fig. 5 (not shown). In a further embodiment the wires are bent to form a plurality of undulations joined by straight portions which are force-fitted into grooves in the face of the plate followed by soldering or by covering the whole assembly with adhesive, Fig. 6 (not shown). The plate and wires may also be of copper or brass secured by soft-soldering.
Patent GB-1363837-A (GB)
Title: Method of forming an ironmanganese carbide layer on an iron base alloy
IPC: C23C12/02
Filed: 1973-04-03
Abstract: 1363837 Coating iron alloys with Fe-Mn carbide TOYOTA CHUO KENKYUSHO K K 3 April 1973 [8 April 1972] 15827/73 Heading C7F An iron base alloy having at least 0À1 carbon is formed with an Fe-Mn carbide layer by heating (650 to 1200‹ C.) in a pack comprising an alkali metal or ammonium fluoborate, an inert powder, e.g. alumina, silica, boron nitride or chromic oxide, and Mn or Mn-Fe alloy. The reaction may take place in air or an inert gas. The substrate may be case hardened before the diffusion process.
Patent GB-291363-A (GB)
IPC: E05B63/00
Filed: 1928-05-30
Abstract: 291,363. Etablissements Freyburger. May 30, 1927, [Convention date]. Void [Published under Sect. 91 of the Acts]. Bolt operated indirectly from key; locks, adjusting and attaching ; lock mechanism. -A lock particularly for automobile doors comprises a casing a, Figs. 4 and 5, inserted in a hole in the door post and a bolt inserted in a second hole in the post at right-angles to the casing, the bolt having a screwed stem m by which it is attached to a sliding member d to allow adjustment as to length, and a non-circular nose l which is surrounded by a plate n secured to the post and having a corresponding non-circular aperture which prevents unscrewing of the bolt. The bolt is operated by an eccentric pin h on an arm f carried by a cylinder b normally urged to the left by a spring e, in which position the pin h is disengaged from a groove i in the sliding member d, and the barnel is held against rotation by the arm f engaging in a slot in a fixed plate c. When the key is inserted and pressure applied to the cylinder, arm f is moved clear of the slot which then registers with a reduced neck g, so that the cylinder may be rotated by the key, and the pin h engages in groove i so that rotation of the cylinder operates the bolt. Fig. 9 shows a modification in the form of a tubular mortise lock having a disc p rotatable by a key and provided with an eccentric pin h engaged in a groove in a slider d of segmental cross-section to which the bolt, not shown, is screwed.
Patent GB-635483-A (GB)
Title: Power assisted steering gear
IPC: B62D5/24
Filed: 1946-05-24
Abstract: 635,483. Fluid-pressure servomotor-control systems. ROSS GEAR & TOOL CO. May 24, 1946, No. 15844. Convention date, March 26, 1945. [Class 135] A steering gear actuated by a hydraulic servomotor for assisting the driver of a road vehicle comprises a rock-shaft 13, Fig. 3. secured at one end to a lever 14 connected to the steering wheels and formed at its other end with an arm 16 having a pivot pin 18 carrying an actuating member 17 provided at one end with a pair of cam-rollers 35, Fig. 2, which engage the usual worm 30, Fig. 1, at the base of the steering column 32. The other end of the member 17 is formed with an arcuate camgroove 48 which engages a follower 50<SP>1</SP>, secured to the end of a rod 50 of the spool 57 of a relay valve 47, and is loosely mounted on the shaft 13 to permit limited movement with respect thereto, being urged towards its neutral concentric position by spring-pressed balls 25 mounted in a collar 19 formed on the member 17. The valve 47 has annular grooves 52 ... 56 arranged to communicate through lines 52<SP>1</SP> ... 561 with a supply pump 65, a return tank 66, and the ends of a power cylinder 40 housing a double-acting piston 43, whose rod 42 is connected to the lever 14. The lands of the spool 57 have negative lap, so that when the spool is held in its neutral position by a spring 60, the pump 65 and the ends of the cylinder 40 communicate with the tank 66. In operation, if the resistance encountered by the road wheels is greater than can be overcome manually by the driver, rotation of the steering column 32 will move the rollers 35 so that the actuating member 17 will swing about the pivot 18 to depress one or other of the balls 25 against its spring to move the cam-groove 48 and hence, through the follower 50<SP>1</SP> and rod 50, the spool 57 to connect one end of the cylinder 40 to pressure liquid from the pump and open the opposite end to the tank to move its piston 43 and hence the lever 14. This movement will continue all the time the steering shaft is being rotated at a rate to keep the ball depressed. On the rate of rotation being less than this value or the shaft 32 being stopped altogether, the movement of the rod 42 and the accompanying rotation of the shaft 13 and the arm 16 under the still unbalanced pressure on the piston will cause the actuating member 17 to be moved to its neutral position and hence the spool 57 to its inoperative position. Specifications 410,965, [Group XXXI], and 462,486 are referred to.
Patent GB-999918-A (GB)
Title: Improvements in or relating to heat resistant seal elements
IPC: F16L27/12
Filed: 1963-04-22
Abstract: 999,918. Joint-making packing; pipe joints. GENERAL CONNECTORS CORPORATION. April 22, 1963 [July 20, 1962], No. 15865/63. Headings F2B and F2G. A sealing ring 5 for a pipe coupling comprises an elastomer core 27 wrapped in a covering of elastomer impregnated woven glass, asbestos, polytetrafluoroethylene or other heat-stable fabric 28, the ring being four-sided in crosssection with two opposite sides convex and the other two concave. The fabric is impregnated with a high temperature elastomer, e.g. silicone rubber loaded with iron oxide, before being wrapped around the core 27 of silicone rubber. The confronting ends of tubes 1 are bridged by a sleeve 2 having at each end a channel 4 housing a sealing ring 5 in sealing engagement with one of the tubes. Axial separation of the tubes is restricted by tension cables 10 engaged by ferrules 11 at their ends in key slots 9 in flanges 6 secured to the tubes. Each ferrule 11 has outer and inner knobs 12 and 13 respectively separated by a shank 14 retained in the smaller portion of the key slot by a locking wire 15. In a modification, Figs. 11 and 12, in which the sleeve 16 is in halves connected by bolts 22 and sealed by an element 23 similar to the ring 5, the cables 10 are omitted and beads 27 on the ends of the tubes 1 prevent their withdrawal past the rings 5.
Patent GB-825859-A (GB)
Title: Improvements in or relating to oil-fired heating apparatus
Inventor: JOHNSON DOUGLAS JAMES
IPC: F23D11/10
Filed: 1956-05-23
Abstract: 825,859. Oil burners. JOHNSON & STARLEY Ltd. May 6, 1957 [May 23, 1956], No. 15884/56. Class 75(1) [Also in Group XII] Heating apparatus for burning high viscosity oil, including waste engine lubricating oil comprises a combustion chamber or firepot 19, a burner unit block 14 having a duct 16 communicating with a burner tube 17 located in the firepot and having an inlet 12 connected with an oil supply and an adjacent inlet 25 connected to a supply of air at atmospheric pressure regulated to secure optimum conditions of combustion as by means of a pivoted plate 26 over the mouth of the inlet 25, the duct 16 also housing a nozzle 24 connected with a compressed air supply line 21 as through a control valve 22 operated by a wheel 23, to form an aspirator in association with the inlets 12, 25. The aspirator may be combined with a venturi in the burner tube and this latter is arranged to direct the flame horizontally on to a flame spreader baffle 20 to redirect the flame upwardly towards the underside of a boiler or heat exchanger situated above the fire-pot. The front plate 18 of the firepot 19 is attached by bolts 27 to the furnace door 28, the block 14, plate 18 and firepot 19 forming a unitary structure that can be fitted to an existing furnace by solely making an aperture in the door 28 to accommodate the block 14. The front plate 18 may be dispensed with and the firepot bolted directly on the furnace door. A removable top plate placed across the open top of the firepot at the burner end directs the flame more positively to the baffle 20 and the plate may have a vertical portion abutting against the furnace door. The Provisional Specification describes an alternative structure in which an oil and air mixture delivery pipe leads from the duct 16 to a nozzle mounted centrally beneath an aperture in a circular pan integrally formed on a frame fixed to the furnace door and carrying a firepot which is disposed above and coaxially with the pan and has a transverse V-section flame deflector mounted above it. The main oil tank has a gravity feed connection to an auxiliary oil tank from which the feed to the injector is controlled by a float operated valve and air can flow to the main tank when the level of oil in the auxiliary tank drops below a predetermined level to reduce the partial vacuum having formed in the main tank and permit the oil to flow to the auxiliary tank whereupon on the oil reaching a specified level, the air supply to the main tank is again cut off.
Patent GB-529910-A (GB)
Title: Steam boilers
IPC: F22B21/26
Filed: 1939-05-30
Abstract: 529,910. Forced flow steam boilers. MARTIN, D. R. (Brevets Franco-Americains Limitee.). May 30, 1939, No. 15949. [Class 123 (ii)] A steam generator consists of tube coils 6 surrounding a heat-resisting burner tube 4 and surrounded by a feed-heating jacket 2. The steam is superheated in a coil 12 embedded in ceramic material at the outlet end of the burner tube.
Patent GB-1224901-A (GB)
Title: Polyacrylamide-based wet-strength resin and paper having a content thereof
Inventor: WILLIAMS LAURENCE LYMAN
IPC: D21H17/45
Filed: 1968-04-03
Abstract: 1,224,901. Water-soluble cationic amide polymers. AMERICAN CYANAMID CO. 3 April, 1968 [6 April, 1967], No. 16080/68. Heading C3P. [Also in Divisions C1 and D2] Water-soluble, thermosetting cationic poly mers which are resistant to hydrolysis and con tain 20-90 mole per cent of acrylamide units and 80-10 mole per cent of units of the formula wherein X is selected from -CH 2 CH 2 -, -CH 2 CH-CH 3 , -CH 2 CHOHCH 2 -, -CH 2 CH-CH 3 , -CH 2 CHOHCH 2 -, -CH 2 CH 2 NHCH 2 CH 2 - and -CH 2 CH 2 OCH 2 CH 2 -, are prepared by reacting a polymer of acrylamide with an amine of the formula NH 2 -X-NH 2 , where X has the aforesaid meaning and effecting an appropriate degree of transamidation. Suitable amine reactants include ethylenediamine, 1,3-diamino-2-propanol and diethylenetriamine; The starting acrylamide polymer may be a homopolymer or a copolymer containing minor amounts (e.g. up to 20 mole per cent) of units of other monomers, e.g. acrylonitrile, styrene or diallyldimethylammonium chloride, and monomers containing carboxyl groups, e.g. acrylic acid. The cationic copolymers may be partially reacted with a cross-linking agent such as epichlorohydrin, epibromohydrin, ethylene dichloride, diglycidyl ether or formaldehyde to enhance their thermosetting properties.
Patent GB-1185693-A (GB)
Title: Method of Producing Resistors
Inventor: YAMADA TAKEO
IPC: C23C14/04
Filed: 1967-04-07
Abstract: 1,185,693. Variable resistors. NIPPON KOGAKU K.K. 7 April, 1967, No. 16111/67. Heading H1S. A resistor having values of resistance per unit length at a series of points along it which are progressively less the greater the distance of the point from one end of the resistor is formed by the deposition through masks on to a substrate 1 of successive layers of resistive material. The thicknesses of resistive material deposited by successive depositions may be in geometric progression as shown. The resistor may be of arcuate form (Fig. 9, not shown).
Patent GB-1138155-A (GB)
Title: Synchronous motor system
IPC: H02P25/02
Filed: 1966-04-13
Abstract: 1,138,155. Automatic speed control. SANDERS ASSOCIATES Inc. April 13, 1966 [April 26, 1965], ], No. 16230/66. Heading G3R. [Also in Division H2] Rotation of the permanent magnet field units of a synchronous motor induces a speed-responsive signal in generator winding 22 which is applied through amplifier 24 to the armature winding across terminals 62, 64. The motor is given a small initial velocity which is increased by the rise in frequency of the signal from winding 22 until a speed sensor 26 emits a signal to currentcontroller 28 for reducing the current supplied by amplifier 24 to the armature winding. If the motor speed then tends to change, the sensor 26 and controller 28 will return the speed substantially to the desired value. Transistor 48 switches between its conducting and non-conducting states when the voltage from winding 22 passes through zero. When the transistor 48 is cut-off, transistor 72 renders the transistors 50, 56 conductive to energize the armature winding from battery 58. During the next half-cycle, transistor 48 conducts  to turn-on transistor 80. The armature winding is then energized through transistors 54, 52. When the voltage from winding 22 reaches a predetermined level, the impedance of tunnel diodes 104, 106, increases to render transistor 102 conductive during negative half-cycles. The current in transistor 112 is reduced and that in transistor 114 is increased to decrease the armature current passing through transistor 60 whereby acceleration of the motor is halted for operation at the desired speed. Small variations of speed about the operating point causes transistor 102 to discharge capacitor 116 occasionally by an amount corresponding to the charge current through resistor 108. The operating speed of the motor is adjusted by emitter resistor 118 which changes the gain of transistor 92. Resistor 100 compensates for temperature changes.
Patent GB-476340-A (GB)
Title: Improvements in or relating to method and apparatus for making concrete articles
IPC: B28B11/24
Filed: 1936-06-10
Abstract: 476,340. Casting and hardening concrete blocks &c. WITHEROW, W. P. June 10, 1936, No. 16237. Convention date, Feb. 8. [Classes 22 and 87 (ii)] Concrete articles are moulded by depositing concrete in a mould positioned above heating means within a storage enclosure, and the articles are removed from the mould when cured and retained within the enclosure for ageing, utilizing heat from the heating means to expediate ageing. Concrete is poured from a truck 2 down a shoot 3 into a travelling hopper 4, arranged over ganged moulds 5 which are fixed to water troughs 7. The moulds are filled, levelled and vibrated and the trough is heated by steam pipes 6 to cure the blocks. When the initial set is acquired, the blocks are raised on a slidable part 8 and subsequently removed by a hoist 10 and travelling crane 12 to a stack 13 on the same enclosure as the heating trough 7. The blocks are thus protected from adverse weather during ageing. The ganged moulds 5 are each formed of two castings 27, 29, Fig. 9. The castings 27 are fixed by bolts 28 to I-beams 24 fixed across steel channel members, whereas the castings 29 are fixed to vertically-slidable I-beams 25. 'Each casting 27 may comprise one side and one end wall of a mould and a ledge for supporting core members 26. The castings 29 may comprise the remaining side and end walls and an apertured pallet. The cores 26 may be connected in pairs by bars 33 having recesses 31 for reception of a shaft 30 carrying cams 29a. The arrangement is such that the shaft 30 can be rotated to move the cams and raise the I-beams 25 slightly and so raising the blocks on the pallets and breaking any bond between the blocks and mould walls. The blocks are left in the raised position while steam circulates in the spaces so formed. The slidable beams 25 and mould parts are subsequently engaged by the hoist 10 for removal to the stack 13. The mould walls may be panelled or ornamented. The cores may be corrugated or otherwise made resilient to facilitate removal of the blocks and they may be hollow to permit heat to reach the interior of the blocks. They may be lined with stainless steel or other sheet metal surfaces affixed by asphalted asbestos paper.