baber/WOPTO huggingface dataset:
Patent GB-876040-A (GB)
Title: Improvements in and relating to tubular heat-transfer apparatus
Inventor: ROYLE GORDON ALAN
IPC: F28F1/08
Filed: 1959-11-03
Abstract: 876,040. Tubular heat-exchange elements. ROYLES Ltd. Nov. 3, 1959, No. 37186/59. Class 64(3) [Also in Group XXII] In a heat-exchanger tube of the type having an initiallycircular cross-section deformed at regular intervals by indentations F<SP>1</SP>, F', F<SP>3</SP>, to produce multi-lobed sections, the lobes G all lie within an imaginary circle C having the diameter of the undeformed tube A and the deformations are staggered relatively to one another around the axis of the tube by an amount equal to half the angle between the lines of action of the consecutive presstools performing the deformation. This arrangement permits the ready withdrawal of a defective tube from a stack.
Patent GB-930185-A (GB)
Title: Improvements in dynamo-electric machines and methods of manufacture for same
IPC: H02K15/16
Filed: 1959-11-03
Abstract: 930,185. Mounting rotors of electric motors. GENERAL ELECTRIC CO. Nov. 3, 1959 [Nov. 4, 1958], No. 37245/59. Class 35. [Also in Group XXII] The rotor of an electric motor is accurately placed by means of shims in the air gap, the bearing brackets of the motor are then bonded by a setting resin to the stator core to locate the rotor in this position, and then the shims are removed. As shown in Fig. 6, the motor, which has a square stator core 21 and U-shaped bearing brackets 32, 33, is assembled on a jig 42 having a socket 54 in which the rotor shaft 27 rests and a pair of rods 49 passing through holes in the lower bearing bracket and which support the stator. The depth of the socket 54 is adjustable by means of a set screw 55 by means of which the rotor end-play may be preset. The stator support rods 49 are supported at their lower ends by a centrally pivoted beam 48 to permit some latitude in the stator positioning. The end brackets are pre-formed with resilient supports 40 and bearing bushes 53 having lubricating pads 39. The rotor is provided with inset thrust discs (58, 59, Fig. 3, not shown) which may bear against the ends of the bearings to limit the end-play. During assembly the rotor is correctly located by means of shims. These shims may be of metal, necessitating subsequent withdrawal through apertures in the motor shell, but preferably consist of a layer on the stator bore of meltable wax (a mixture of bees' wax and paraffin wax) which melts out during the subsequent curing process and falls into one end cover (at 62.) When the assembly is complete resin 65 is placed, by squirting or other means, in between the axial arms 35 of the end covers and the stator core. The resin which may be set by heat or at room temperature may be an epoxy resin with a polyamide or amine hardener, with or without rubber and asbestos. Phenol formaldehyde condensate, a polyvinylacetol rubber type cement, or cellulose esters may be used. Fillers such as mica, titanium oxide, wollastonite, glass fibres, silica, alumina, asbestos, barium sulphate, and calcium carbonate may be used. Modifications are described in which the stator and end covers are cylindrical and in which the end-covers have axial projections fixed by plastic in apertures in each end of the stator core, or the end covers may meet to form a continuous housing in which the stator is secured by the plastic. In a further modification the end-covers are secured inside the end-windings which are themselves enveloped in resin. In the form shown in Fig. 11, the rotor shaft rotates in a single bearing sleeve 160 and is secured to the rotor by a hub 142 cast integrally with the squirrel cage and secured to a sleeve 150. The stator is located in the housing 152 by resin 65 as before. Bearing lubricant is drawn by wick 167 and spiral 169 through the bearings to an oil flinger 170, whence it is absorbed by a wick 171 and subsequently returned to reservoir 165 by a wick 174.
Patent GB-846471-A (GB)
Title: Improved optical cement compositions and methods of cementing optical components
IPC: C08F283/01
Filed: 1956-12-06
Abstract: An optical cement is prepared by forming a homogeneous blend of (1) 40 to 60% by weight of allyl phthalate, diallyl phenyl phosphonate or diallyl diethylene glycol dicarbonate; (2) from 60 to 40% of (a) an unsaturated polyester, (b) a mixture of an alkyl acrylate or methacrylate with 1 to 5% of a divinyl monomer, or (c) a mixture of 20 to 30% of an unsaturated polyester and 30 to 20% of a chlorinated biphenyl, and (3) a polymerization catalyst, heating to form a gel, cooling to room temperature, and homogenising with 25 to 1000% of its weight of the same blend in a more liquid condition.  The preferred polyester is prepared from equimolar quantities of bicyclo (2,2,1)-5-heptene-2,3-dicarboxylic anhydride and 1,2-propane-diol. The more liquid blend may actually be a liquid or a soft gel and is homogenised with the firm gel by forcing them through a stainless steel screen.  The cement is applied to the optical components and the assembly, without any need for a clamping device, is heated in an oven to polymerize the composition.  Illustrated compositions are (1) equal parts of the above polyester and diallyl phenylphosphonate with 3% benzoyl peroxide; (2) as in (1), the allyl compound being replaced by diallyl phthalate; (3) 1 part of the polyester, 1 part of a chlorinated biphenyl, 2 parts of diallyl phenyl phosphonate and 3% benzoyl peroxide; (4) equal parts of n-butyl methacrylate and diallyl diethylene glycol dicarbonate, 1 1/2 % of a 75% p-divinyl benzene, 25% 1,4-ethyl vinyl benzene mixture, and 3% benzoyl peroxide.
Patent GB-1321159-A (GB)
Title: Copper lead alloy
IPC: C22C9/02
Filed: 1971-08-09
Abstract: 1321159 Copper-lead alloy COLORADO SPRINGS NATIONAL BANK 9 Aug 1971 [10 Aug 1970] 37382/71 Heading C7D A copper-lead alloy is made by including a homogeneity promoter in a mixture of molten lead and copper, the promoter comprising elemental carbon and a rare earth metal compound. The alloy may also contain Zn, Sn and Ni. The carbon may be powdered graphite, bone - black, carbon black or charcoal. The rare earth metal compound may be an oxide, carbonate or halocarbonate, e.g. cerium fluorocarbonate. The promoter may also include an alkali metal or alkaline earth metal carbonate. Metal phosphate may also be added to the melt.
Patent GB-1001854-A (GB)
Title: A vaporizing device for an anaesthetic apparatus
IPC: B01F23/10
Filed: 1962-10-03
Abstract: 1,001,854. Anaesthetic apparatus. O. H. DRAGER, [trading as DRAGERWERK, HEINR & BERNH DRAGER]. Oct. 3, 1962 [Nov. 18, 1961], No. 37465/62. Heading AST. In the type of anaesthetic apparatus in which part of the incoming gas passes through a vaporizing chamber while the remainder passes through an adjustable by-pass, a length of tubing is incorporated upstream of the vaporizing chamber. This prevents variations of pressure within the chamber, resulting from the patient's breathing, causing vapour to flow back into the by-pass where it might disturb the correct proportioning of vapour. Air or gas entering a distributer chamber 2 either passes through an adjustable valve 9 to the outlet 11 or through a long sinuous tube 12 to the evaporator 13 and so through a second control , valve 6 to the mixing chamber 8 and outlet 11. Any excess pressure produced in the chamber 13 by the patient's exhalation is unable to cause vapour to pass through the tube 12 to the chamber 2 before the direction of flow is reversed.
Patent GB-809714-A (GB)
Title: Improvements in or relating to cap closures for containers
Inventor: HILL JOHN CHARLES
IPC: B65D41/16
Filed: 1956-12-10
Abstract: 809,714. Container closures. METAL BOX CO. Ltd. Oct. 25, 1957 [Dec. 10, 1956], No. 37698/56. Class 125(3). A circular cap closure of thin gauge aluminium or other metal 0À006 to 0À014 inches thick has a straight skirt 1 terminating in a curl 3 of substantially circular cross-section and provided with slits 4 extending from the free edge 5 to position 6 adjacent to but not in the plane of the open end 7 of the cap. The crown of the cap has a channel 9 filled with a sealing compound 10, the cap being usable as a vacuum cap or snap on cap and the skirt lower part being moved inward during application by a closuring machine.
Patent GB-1113742-A (GB)
Title: Improvements in or relating to shears
Inventor: LEES JOSEPH
IPC: B23D21/00
Filed: 1965-09-03
Abstract: 1,113,742. Shearing. GARRINGTONS Ltd. 19 Aug., 1966 [3 Sept., 1965], No. 37716/65. Heading B3W. A shear 10 for bar stock 25 comprises two co-operating shear blades 23, each having a cutting face 26 and a cutting edge 27, mounted for pivotal movement in holders 15 about a shaft 14 perpendicular to the planes of said faces and guide means 38 for the stock at each side of the blades. The shaft 14 is mounted in a pair of blocks 12 fixed to the base 11 of the shear and the two shear blade holders 15 are pivotally mounted adjacent each other between the blocks. Each holder 15 is L-shaped with arms 15a, 15b. The arms 15a each have a semicylindrical recess 19 into which a cutting blade 23 is secured. Each blade is made of hardened steel and its inner diameter is approximately equal to that of the bar stock. The shape of the blade may be altered for various crosssections of stock, e.g. square stock. The other arm 15b of each holder engages a projection (64), Fig. 3 (not shown), of the movable ram of a forging press (not shown). The forging press is set in operation and as the ram descends the projections (64) engage the upper surface of each arm 15b to cause the holders 15 to rotate in opposite directions and shear the stock. When the ram ascends the shear blades are opened by a pin (65), Fig. 2 (not shown), sliding in a slot 63 in a member 62 connected to each arm 15b. The guides 38 for the stock are releasably mounted in support members 35 which are pivotally mounted on the shaft 14. Each member 35 has three bifurcated brackets 40 welded to its outer side in which rods 41a, 41b are pivotally mounted. A coil spring 44 is carried by each rod between the bracket 40 and a bracket 47 fixed to the base of the shear. A further rod 51 is pivotally mounted to a U-shaped lug 31 of the support 30 for each guide member. Each rod 51 has a pair of compression springs 53, 56. The springs 44, 53, 56 serve to permit and cushion sideways movement of the members 35 during the shearing.
Patent GB-1556315-A (GB)
Title: Heat exchangers
IPC: F28D9/00
Filed: 1977-09-12
Abstract: The heat exchanger is stacked together from individual layers which consist of corrugated elements (2, 3) and are separated from one another by intermediate walls (4). In order to simplify the production of such heat exchangers, the sealing of the individual flow paths, which extend alternately in a cross-wise fashion relative to one another, is effected by ends (5) of the intermediate walls (4) which project on two opposite sides over the corrugated elements (2, 3). The ends (5) embrace the next layer of corrugated elements (2, 3) and the intermediate wall (4) following thereupon. The embracing ends (5) are pressed by the layer of the corrugated elements (2, 3) which then follows, that is to say the layer next but one, against the adjacent intermediate wall (4) overlapped by them, resulting in the achievement of a satisfactory seal between two adjacent layers of corrugated elements (2, 3). <IMAGE>
Patent GB-1550823-A (GB)
Title: Preparation of 2-chloroalkanals
IPC: C07C67/00
Filed: 1975-09-16
Abstract: 2-Chloroalkanals having at least 3 carbon atoms in the molecule are prepared by chlorinating the corresponding alkanal with sulphuryl chloride and isolating the 2-chloroalkanal by distillation. To improve the yield, a procedure is followed in which the chlorination is carried out in the presence of a water-binding agent and/or carrying out the final stage of the distillation in the presence of concentrated sulphuric acid.
Patent GB-934173-A (GB)
Title: Improvements in or relating to electrical apparatus for maintaining a predetermined quantity of an elongated medium at a predetermined zone
Inventor: HURST DEREK
IPC: G11B15/56
Filed: 1958-11-26
Abstract: 934,173. Automatic control systems. ELECTRIC & MUSICAL INDUSTRIES Ltd. Nov. 16, 1959 [Nov. 26, 1958], No. 38032/58. Class 38 (4). A predetermined length of magnetic tape is maintained in each of the bins 5, 6, by means of spools 1, 2, driven by reversible electric motors 3 and 4, a pair of vacuum capstan rollers 9, 10, being continuously rotated in opposite directions by electric motors 11, 12. Suction is selectively applied to the rollers from a vacuumsource 13. The quantities of tape in the bins is determined by electrodes 14, 14a, and capacitymeasuring devices 15, 16. Command signals from a source 17 control the application of suction to one or other of the rollers 9 or 10, and condition the motors 3 and 4 to drive the spools in a direction corresponding to the direction of feed of the tape. When the apparatus is required to drive the tape in a left-hand direction by means of roller 9 into bin 5, a positive signal is applied from source 17 to OR-gate 18 which opens the gate to feed a positive signal to AND-gate 19. The gate 19 also receives a positive signal from the device 15 if the bin 5 is full, the gate then opening to energize the motor 3 in a direction to empty the bin, an amplifier 20 feeding back a positive signal to the gate 18. The gate 18 remains open, therefore, even if the command signal is reversed, until the bin is empty and the signal from the device 15 changes its sign. The tape is driven in a right-hand direction into bin 6 by means of roller 10 when source 17 supplies a negative signal to OR-gate 21 which passes a negative signal to AND-gate 22. If the bin 5 is empty, the device 15 also passes a negative signal to the gate 22, whereupon the gate opens and causes the motor 3 to feed tape into the bin 5. The amplifier 23 feeds back a negative signal to the gate 21 which remains open even if the signal from the source 17 is reversed. When the bin 5 is full, the gate 22 closes to de-energize the motor 3. An arrangement similar to that shown for use with spool 1 and bin 5 is provided for use with spool 2 and bin 6 Specification 930, 664 is referred to.
Patent GB-1439461-A (GB)
Title: Means for separating particles of impurities from oil
IPC: B04B5/10
Filed: 1972-08-16
Abstract: 1439461 Centrifugal separator DAVID BROWN TRACTORS Ltd 13 Nov 1973 [16 Aug 1972] 38119/72 Heading B2P Particles of impurities are separated from oil in an enclosure 10 containing a rotatable component 11, 12 by having a concave annular trough 14, 15 secured to, or made integral with, the rotatable component so that the trough dips into the oil, and rotating the component at a speed sufficiently high to cause the particles to be separated from the oil and to be packed into the base of the trough by the action of centrifugal force. As shown, a hollow main frame 10 contains oil for lubricating the gearbox and the rear axle drive of an agricultural tractor and also forming the working fluid for the hydraulic lift power mechanism on the tractor. The gearbox output shaft 11 is integral with a bevel pinion 12 constituting the input of the drive and meshing with a bevel wheel 13 constituting the output thereof. The trough consists of an inwardly curved rim 14 spot-welded to a flange 15 which is clamped between the pinion 12 and the inner race 17 of a roller bearing, the outer race 18 of which is held in position by a ring 19 secured to the frame 10 by set-screws 20. In operation, the oil level in the hollow frame 10 is above the lowest point traversed by the open side of the trough, and oil which enters the trough is carried round by the rotating shaft 11. Particles of impurities in the oil are flung to the base of the trough and packed there by centrifugal force. An inspection cover or plug may be provided in the frame to enable the trough to be cleaned out.
Patent GB-899013-A (GB)
Title: Improvements relating to expansible plugs for securing bolts, screws, nails and the like in walls and other surfaces
IPC: F16B13/00
Filed: 1959-11-11
Abstract: 899,013. Packages. THORSMAN, O. W. Nov. 11, 1959 [Nov. 11, 1958], No. 38226/59. Class 94(1). [Also in Group XXV] A package of screw, nail &c. sockets comprises as a single moulding of elastic material, e.g. a mixture of high-density polyethylene and polyvinylchloride, a plurality of the plugs 9 secured to a body 11 by thin necks 12. The body 11 may carry information relating drill and screw dimensions to the plugs.
Patent GB-893964-A (GB)
Title: Improvements in or relating to props, especially pit props
IPC: E21D15/58
Filed: 1958-11-27
Abstract: 893,964. Hydraulic pit-props. EGGEMANN, W., and CAMPENHAUSEN, E. VON, [trading as SCHWARZ KOMM.-GES., HERMANN]. Nov. 27, 1958 [Dec. 17, 1957], No. 38228/58. Class 20(2) A pit prop comprising telescoping parts 10, 18 held extended against load by a friction clamp 14 is set by a fluid operated plunger 22 in the lower end of the inner prop part 18 and which operates against the outer prop part 10. As shown this plunger operates against a wedge 13 adapted to be driven into slots 12 in the outer prop part 10 to raise the inner prop part 18 against the mine roof. The fluid for the plunger is supplied by a supply pipe connected to a coupling 30. The clamp 14 comprises a claw 16 driven over the projecting free ends of a clamping collar by a wedge 15.
Patent GB-870898-A (GB)
Title: Improvements in or relating to saw sharpening machines
IPC: B23D67/00
Filed: 1959-11-16
Abstract: 870,898. Saw-sharpening machines. FOLEY MANUFACTURING CO. Nov. 16, 1959 [Feb. 6, 1959], No. 38825/59. Class 83 (3). A saw-filing machine comprises a stand 2, Figs. 1 and 2, a table 1 supporting a front plate 3, Fig. 1, and frame arrangements for a reciprocatory file holder 10. The latter cuts on the backstroke and is lifted at the end of the stroke and returned out of contact with the work. The driving mechanism from the motor 15 and the relief gear for the holder are of known types and not described in detail. The machine is particularly adapted for sharpening saw-teeth when these are in groups with the spaces between groups different from the spacing between individual teeth in a group. This is achieved by arranging that pawl feeding mechanism for the teeth has sufficient amplitude to move the saw through the distance from one tooth in a group to the corresponding tooth in an adjacent group. A saw, such as a circular saw 22, is mounted on a dependent angularly adjustable arm 23 by a tapered boss 32 and clamp-screw 31. Jaws 34, 35 support the top edge of the saw, the jaw 35 being adjustable by a thumb-screw 39, Fig. 1. The feed pawl 40 is pivoted at 41 to the lower end of a lever 42 pivoted about a pin 43 and urged in a clockwise direction by a spring 44. The feed pawl carries a pin 46 which rides on a cam surface 47 to lift it on its return movement. The lever 42 is oscillated on reciprocation of the file-holder 10 by the upper edge of a camplate 56, Fig. 2, which is angularly adjustable about a pivot 57. The cam edge bears on a follower 60, Fig. 1, integral with one arm of a double-armed lever 50 which pivots about pin 43 and has its other arm connected through an adjusting screw 52 to the lever 42. When the file 14, Fig. 7, reaches the end of its cutting stroke the holder 10 is lifted engaging the camplate 56 and follower 60 so that the latter is given a first movement to shift the feed-pawl. The holder 10 then moves forward at the same level on the non-cutting stroke and by the inclination of the plate 56 the follower is given a second movement which moves the feed-pawl sufficiently to cover the distance between two groups of teeth as referred to above. U.S.A. Specifications 1,728,393 and 2,343,171 are referred to.
Patent GB-932167-A (GB)
Title: Improvements in or relating to low pressure mercury vapour fluorescent electric discharge lamps
Inventor: WILLIAMS CHARLES EDINGTON
IPC: H01J61/72
Filed: 1960-11-14
Abstract: 932,167. Discharge lamps. GENERAL ELECTRIC CO. Ltd. Nov. 8, 1961 [Nov. 14, 1960], No. 39060/60. Drawings to Specification. Class 39 (1). A low-pressure mercury vapour electricdischarge lamp has associated therewith means for producing within the lamp a magnetic field distributed along the whole or the major part of the discharge path of the lamp such that the orientation of the magnetic field varies cyclically along the length of the discharge path, with the direction of the magnetic lines of force reversed a plurality of times between one end of the discharge path and the other. The magnetic field is preferably produced by a plurality of ferrite elements disposed along the discharge lamp, adjacent elements having opposite polarities. Two rows of elements may be used, either lying adjacent to each other, or with the discharge lamp therebetween. In a specific embodiment, the elements are held by their own magnetism on a steel plate support, and the discharge lamp mounted below them with an aluminium reflector disposed between the lamps and the elements. The direction of the magnetic lines of force may be reversed ten or more times between the ends of the discharge path, and a complete reversal in the direction of the lines of force from one direction to the opposed direction may take place in every four inches or less of the discharge path.
Patent GB-920889-A (GB)
Title: Improvements relating to the silencing of gas turbine engines
Inventor: BROWN DAVID MORRIS
IPC: F02C7/045
Filed: 1960-11-14
Abstract: 920,889. Gas turbine engines. ROLLSROYCE Ltd. Nov. 9, 1961 [Nov. 14. 1960], No. 39097/60. Class 110 (3). A gas turbine engine has an air intake which comprises an outer casing 10 and an inner bullet member 12 mounted therein so as to define an annular air intake passage 14, means being provided for effecting relative axial movement of the outer casing and the inner bullet member into and out of a position in which the air intake passage is choked at a predetermined mass flow therethrough, whereby when the air intake passage is so choked the engine noise escaping therefrom is reduced. The internal surface 11 of the outer casing is curved having its maximum cross-sectional area approximately half-way therein, and the bullet member 12 is shaped so as to have its maximum crosssectional area in a plane 13. The position of the bullet member during take-off of the aircraft and during flight is indicated in full lines, the minimum width of the air intake passage which is of convergent-divergent form being indicated at a. The bullet member is moved to the forward positionindicated by chaindotted lines during landing of the aircraft, the minimum width of the air intake passage then being such that with the reduced value of mass air flow then prevailing, the passage is choked, i.e. the air flow therethrough is at sonic velocity and pressure variations such as those due to noise on the downstream side of the orifice are no longer transmitted upstream thereof. The position of the bullet member is controlled by a lever 22 which controls the flow of hydraulic fluid to one side or other of the piston 16<SP>1</SP>.