baber/WOPTO huggingface dataset:
Patent GB-844369-A (GB)
Title: Improvements in and relating to shield or screening cans for a thermionic valve or other electronic device
Inventor: CLEWES ANTONY BRASHER
IPC: H01J19/66
Filed: 1955-11-15
Abstract: 844,369. Discharge apparatus. CARR FASTENER CO. Ltd. Oct. 25, 1956 [Nov. 15, 1955], No. 32689/55. Class 39(1). A valve-screening-can assembly comprises a cylin drical sleeve 7 formed by bending a sheet metal strip so that its edges 8, 9 over lap and a metal earthing strip 12 the inner end o which is held during use between the inner surface of the sleeve 7 and the valve about which it is mounted while its other end is taken to an earthing point; thus in the arrangement shown it makes connection with a central spigot 15 of the valve-holder 1. The edges 8, 9 of the sleeve are free to move with respect to each other so that sleeve may expand or contract radially to suit the valve with which it is used. Ribs 10 are pressed in the surface of the sleeve, their opposite ends engaging each other in a sliding nesting fashion. The strip 12 is also provided with ribs engaging the ribs 10. Fig. 2 shows a modified form of earthing strip comprising a tapered end 17 which is adapted to enter a suitable aperture in a printed -circuit panel on which the valve is mounted and be connected to an adjacent earth conductor of the printed circuit by dip soldering. In a further modification, the earthing strip is attached at its lower end to a ring which may be bolted to the chassis and within which the valve holder is located. A flap or cover 7a which is preferably formed integrally with the sleeve 7 but which may comprise a separate piece hinged thereto may be provided.
Patent GB-677740-A (GB)
Title: Improvements relating to the winning of bitter substances from hops
IPC: C12C3/08
Filed: 1949-12-21
Abstract: 677,740. Treating hops &c. AKTIEBOLAGET STOCKHOLMS BRYGGERIER. Dec. 21, 1949 [Dec. 22, 1948], No. 32737/49. Class 14 (ii). In treating hops, or an extract of hops containing a and 0-bitter acids, to convert the #- bitter acid into a water soluble soft resin, the hops or extract are first boiled, in the usual way, to convert the a-bitter acid into an a soft resin which is removed, and the remaining insoluble # bitter acid is dissolved in a solvent, oxidized to a # soft resin by an amount of oxygen or oxidizing agent insufficient to form more than a minor amount of water-insoluble hard resin, and the solvent is finally driven off. The draff remaining after the removal of the a soft resin may be dried before the #-bitter acid is dissolved, or the #-bitter acid may be extracted from the draff and then dissolved. Oxidation may be effected by using between 100 and 150 molar per cent of oxygen based on the #-bitter acid whose molecular weight is 414. Pure oxygen, oxygen-enriched air, air, or a mixture of oxygen and an inert gas may be used. The oxidizing agent may be a water-soluble substance e.g. hydrogen peroxide. The Specification as open to inspection under Sect. 91, comprises also a method in which the #- bitter substances are oxidized suspended in water. This subject-matter does not appear in the Specification as accepted.
Patent GB-770698-A (GB)
Title: Soldering fluxes
Inventor: GLYNN HARRY EPHRAIM
IPC: B23K35/36
Filed: 1954-11-12
Abstract: A flux for use in soldering operations comprises a hydrazine salt together with urea and/or dicyandiamide.  The salt may be a hydrohalide such as the mono- and dihydrochlorides, hydrobromides and hydrofluorides.  Preferably the flux contains at least 1 mole of urea and/or dicyandiamide per mole of hydrazine salt; an example of a suitable flux is given which contains by weight 60 parts of urea per 192 parts of hydrazine dihydrobromide.  The flux may be in aqueous solution or in non-aqueous solution or dispersion form, e.g. in organic solvents such as glycerol, ethylene glycol or diethanolamine, or in rosin or fats.  A wetting agent may also be added.
Patent GB-1080752-A (GB)
Title: Improvements relating to a wall construction for a building or the like
IPC: E04B2/72
Filed: 1964-08-12
Abstract: 1,080,752. Spiked plates. K. GUDDAL. Aug. 12, 1964 [Aug. 27, 1963], No. 32803/64. Heading F2H. [Also in Division El] Sheets of insulating material are connected edge-to-edge by a generally U-shaped clip 16, Fig. 3, having serrations along one edge which in use are engaged with the surface of the sheets of material so that the clip may be forced into the material, straddling the joint between the sheets, the legs 18 being slightly divergent so that they tend to urge the sheets together at the joint as the clip is inserted. The clip may be of metal or plastics. An alternative clip for the same purpose has diverging legs 36 pointed at their ends to engage and penetrate the material.
Patent GB-254205-A (GB)
Title: Improvement in attachment for firearms
IPC: F41C23/04
Filed: 1925-12-29
Abstract: 254,205. Virdin, J. D. Dec. 29, 1925. Stocks.-A gun is provided with an auxiliary bracing stock 4 adapted to bear against the other shoulder from that engaged by the main stock 3, both stocks being used simultaneously. As shown, the mounting for the auxiliary stock comprises an extensible arm 7, 8 attached to the breech body by a screw clamp 5, and an adjustable cross strut 11.
Patent GB-174260-A (GB)
Title: Improvements connected with the lubrication of motor vehicles
IPC: B60R17/02
Filed: 1920-11-22
Abstract: 174,260. O. D. Cars, Ltd., and McKee, J. A. Nov. 22, 1920. Controlling flow of lubricant.-In a motorvehicle or chassis lubricating system in which oil is distributed to the parts to be lubricated by pipes drawing from a common supply, the supply to the distributing pipes is controlled by a valve placed so that it is within reach of and can be operated by foot from the driver's or other seat. The distributing-pipes F deliver to a chamber B containing the valve D normally held upon its seat by a spring E but having its stem D' projecting through a bush b<1> and capable of being depressed, to allow oil to flow to a second chamber B<1> communicating with the delivery pipes C, C<1>, by a plunger G carried in a bracket in the floor of the vehicle. The plunger G is pressed inwards when the foot of the driver is applied to a sliding cap H, a spring H<1> returning the cap to its normal position when the pressure of the foot is removed.
Patent GB-877616-A (GB)
Title: Improvements in electrical connectors
Inventor: COLLIER JOHN COVELL
IPC: H01R4/20
Filed: 1958-10-15
Abstract: 877,616. Two-part couplings. AMP Inc. Sept. 28, 1959 [Oct. 15, 1958], No. 32932/58. Class 38 (1). A plug connector made from a sheet-metal blank includes a ring 16 which is of larger diameter than the nose 13 and which prevents the plug from being inserted so far into a sleeve 8 as to interfere with the insertion of another plug into the other end of the sleeve. The ring also provides a part to engage with the jaws of a pliers-type tool for inserting the plugs into connector sleeves. Crimped portions 14, 15 grip wire strands 7a and the conductor insulation 7 respectively. The shoulder 13b of the plug engages behind dimples 10 formed in the sleeve 8 which is surrounded by a sleeve 9 of rubber or the like.
Patent GB-281730-A (GB)
Title: A device for delivering the tufts of textile fabrics from combing machines having intermittently rotating nipper drums
IPC: D01G19/06
Filed: 1927-12-06
Abstract: 281,730. Schleifer, C. Dec. 6, 1926, [Convention date]. Combing-machines.-In a combing-machine in which tufts of fibres are gripped by nippers carried by intermittently rotating drums and, after being combed at both ends, are presented by the nippers to a delivery device, the delivery device comprises a delivery cylinder 6 mounted loosely on a spindle 10 carried by brackets 11. The spindle 10 is rocked by a link 13 from the lever 5 which controls the rotation of the nipper drum 1. The arm 12 to which the link 13 is connected carries a pressure cylinder 7, which will rotate in contact with the cylinder 6 as it rolls around, and a feed cylinder 9, which is rotated by a pinion 9<1> gearing with a pinion 6<1> carried by the cylinder 6. The cylinder 6 is prevented from rotating in one direction by a pawl 14 engaging a ratchet 15 and in the other direction by a pawl 16, which is raised periodically from engagement with its ratchet wheel 17 by an arm 16<1> operated by projections 19 on the drum 1. When a closed nipper 2, 3 holding a tuft a, Fig. 1, comes to rest opposite the delivery device the cylinders 7, 9 are in their furthest position from the nipper and a projection 19 has lifted the ratchet 16. The lever 5 then moves back idly and draws the cylinders 7, 9 forward. The cylinder 7 rolls round the cylinder 6, which is held stationary by the pawl 14, to press the tuft a against the previous tuft b and the cylinder 9 is rotated by the engagement of the gears to feed forward the apron 8. As the lever 5 moves forward again rotating the drum 1 the cylinders 7, 9 move back rotating the cylinder 6, which has been freed from the pawl 16, until the projection 19 leaves the arm 16<1> and the pawl 16 looks the cylinder 6. The cylinders 7, 9 then begin to roll round it, and the apron 8 is returned for a certain distance to provide the necessary overlap for the next tuft. The pressing cylinder may be omitted and the cylinder 9 and the apron 8 engage the cylinder 6, or the device for supporting the pieced web of fibres may be stationary and independent of the cylinder 9 and may comprise an apron or a pair of rollers.
Patent GB-1483365-A (GB)
Title: Invalid hoists
IPC: A61G7/10
Filed: 1974-07-26
Abstract: 1483365 Weighing disabled persons MECANAIDS Ltd 20 June 1975 [26 July 1974] 33057/74 Heading G1W [Also in Division B8] Means for lifting and weighing a disabled person comprises a column 1, a lifting arm 6, an elevating mechanism for raising and lowering the arm, weighing means fitted to the column or the arm, and manually operable means for rendering the weighing means inoperative. Arm 6 carries a legless chair 7, and is attached into a carriage 4 movable inside the column by means of a chain 19 attached at 20 to the column and passing around a sprocket 26 on the carriage and around a drive sprocket 22 coupled to a handle 5. In the arrangement of Fig. 1 and 3, spring balance head 8 supports lifting arm 6 via a hook 16 and strap 15. The strap 15 is wound on to a self-reeling reel 17 having inertia or manual locking means and reel 17 is supported from a weighbeam 32 by a rack 30 which drives pointers 10, 11. The load is counterbalanced by spring 34 having a zero adjusting screw 44, and a control 45 allows the position of fulcrum 35 of lever 32 to be adjusted. In the modification of Fig. 2, chain 19 is detached from the column 1 and attached to strap 23 of the weighing mechanism 18 which is similar to mechanism 8 but has reel 17 omitted. The mechanism 18 is supported from the column 1 by means of a lifting device 25 so that when weighing is not required, mechanism 18 occupies a lower position in which a stop 24 on strap 23 abuts a pin 20. A clockwork vibrator may be fitted to the column 1 to reduce friction effects.
Patent GB-988839-A (GB)
Title: Drive mechanism for record tapes
IPC: F15B21/00
Filed: 1963-08-23
Abstract: 988,839. Feeding webs. SPERRY RAND CORPORATION. Aug. 23, 1963 [Sept. 5, 1962], No. 33517/63. Heading B6B. [Also in Division G5] A tape driving system including means for creating a pressure differential between the two sides of a tape to apply the tape against driving means or to release the tape from driving means, is characterized by the provision of a fluid amplifier for creating the pressure differential. In Fig. 1 a pneumatic capstan 20 provided with holes 24 in its periphery rotates about a fixed support 14 and is surrounded over one quadrant by a casing 28, a magnetic tape 30 passing between the capstan and the casing. The casing and a recess 26 in the fixed support from chambers on each side of the capstan which are coupled by bores 38 and 36 respectively to a fluid amplifier 31. The power stream outlet of the amplifier is directed by control signal inlets 42 and 44 to supply high pressure air to outle t 32 or 34. High pressure applied to outlet 32 creates suction in outlet 34 by a pump effect, and vice versa, so that positive and negative pressures are applied simultaneously to the two sides of the tape.
Patent GB-521079-A (GB)
Title: Improvements in electric time switches
IPC: G04C3/06
Filed: 1938-11-18
Abstract: 521,079. Actuation of switches; snap-action switches. FABRIK ELEKTR. APPARATE F. SAUTER AKT.-GES. Nov. 18, 1938, No. 33564. Convention date, Nov. 18, 1937. [Class 38 (v)] A time switch comprises a self-starting synchronous motor 30 whichdrives through reduction gearing a wheel 91 loose on shaft 20 and connected by a friction clutch 94 to a cam disc 95 fixed on shaft 20. A snap-action switch 24 of the kind described in Specification 419,917 is arranged so that depression of a pin 60 causes contact 51 to snap away from fixed contact 49 while depression of pin 58 restores the switch to the on position. In use, the motor 30 is connected in parallel with the load and in series with switch 24. To close the circuit for a timed interval, knob 18 is turned to the desired position as shown on a dial 17. This rotates spindle 20 and disc 95, the clutch 94 slipping, and forces a pawl 67 out of notch 100 in disc 95 thus releasing pin 60. Switch 24 can then be closed by pressing button 22 which acts through spring 23 to press pin 58. This closes the controlled circuit and also starts the motor 30 which drives disc 95 farther in the direction in which it was turned for setting until notch 100 again comes under pawl 67. This allows a spring 69 to turn lever 66 to depress pin 60 to open the circuit and stop the motor. Fig. 7 shows a modification in which the time period is not adjustable. The switch 24a is arranged to move to the on position automatically on removal of the pressure of lever 66a. Disc 95a is driven just like disc 95 of the previous embodiment. To make a timed closure of the circuit it is only necessary to turn disc 95a sufficiently to disengage pawl 67a from notch 100 a. This closes the circuit and starts the motor which runs until disc 95a has made a complete revolution, when pawl 67a re-engages notch 100a and allows arm 66a to open the circuit and stop the motor. Disc 95a is carried by a setting spindle 20a having a flange 115 carrying a pawl engageable with a shoulder 107 on a knob 104 movement of which is limited by a pin 110 engaging a short fixed slot (not shown) to an amount just sufficient to close the switch. After that the spindle 20a and disc 115 over run the knob which has no further effect on spindle 20 until the end of the revolution when the pawl re-engages notch 107 in knob 104. To get a shorter time, a number of notches 100a, are made in the periphery of disc 95a, the circuit being closed during the time of travel from one notch to the next.
Patent GB-935848-A (GB)
Title: Purification of sugar juice
IPC: C13B20/06
Filed: 1960-09-30
Abstract: In a process for purifying raw sugar juice, such as diffusion juice, milk of lime is mixed with the juice and the mixture is carbonated. The resulting precipitate of calcium carbonate, including impurities, is separated from the purified juice by sedimentation (thickening) and filtration and then washed with hot water to remove: (a) residual sugar in the form of sweet water, which is used for slaking lime to furnish a supply of milk of lime, and (b) impurities and fine particles of calcium carbonate, which are discarded.  The resulting clean, relatively coarse particles of calcium carbonate are returned to the process before the sedimentation stage, e.g. to a pre-liming stage, to aid sedimentation and filtration and effect a saving in the use of lime.
Patent GB-801901-A (GB)
Title: Improvements in or relating to automatically controlled gearboxes
IPC: F16H61/02
Filed: 1955-11-23
Abstract: 801,901. Change-speed control. REGIE NATIONALE DES USINES RENAULT. Nov. 23, 1955 [Dec. 9, 1954], No. 33618/55. Class 80 (2). In an automatic motor vehicle changespeed gear wherein a gear change is effected through means not shown by a circuit 8 controlled by a relay 4 whose energizing current 1 varies both with a transmission shaft speed and with engine load so that the relay contacts 6 are closed and upshift occurs at a vehicle speed V while the contacts 6 open and downshift occurs at a lower speed v, a manual override device according to the invention allows the driver to cause a downshift only when the relay current is between its upshift and downshift values, the device thereby preventing a manual downshift at high vehicle speeds. Upshifts are effected automatically, irrespective of the condition of the manual override device. The current 1 may be provided by a generator or by a shaft-driven contact breaker. The speeds V and v are distinctly different to avoid " hunting," the speed V being the optimum for an upshift. If the driver desires to cause a downshift before the vehicle speed drops to v (at which speed the automatic downshift occurs) he actuates a switch 9-either manually or by pressing the accelerator pedal beyond the fully-open position. A condenser 11, which is normally connected to a voltage source 17 and is thus normally charged, is thereby discharged through a demagnetizing coil 15 so that the relay flux is decreased for a short period and the contacts 6 open. Provided the vehicle speed is less than V the contacts 6 remain open and the desired downshift is effected. If, however, the driver operates the switch 9 and causes the contacts 6 to open when the vehicle speed is greater than V, the contacts are re-closed as soon as the condenser has discharged and the vehicle remains in high gear, since the gear-changing means in the circuit 8 is so designed that the short period during which the contacts 6 are open is insufficient to cause a gear change. The coil 15 may be mounted on a separate core and act directly on the relay armature, or on a member connected thereto. In a modification dispensing with the coil 15 a driver-operated switch connects the relay 4 in parallel with a. condenser so that the relay current is decreased during the condenser-charging time and allows the contacts 6 to open. In further modifications the relay coil 4 is supplied through, or alternatively may be short-circuited by, a " time delay switch " which when actuated by the driver de-energizes the relay for a very short period.
Patent GB-619079-A (GB)
Title: Improvements in or relating to screw-thread gauges
IPC: G01B3/40
Filed: 1946-11-12
Abstract: 619,079. Screw-thread gauges. BOOTH, C. H., and STOKES, C. Nov. 12, 1946, No. 33636. [Class 106 (ii)] In a screw-thread gauge of the kind in which a coil of wire is allowed to contract on to the thread to be tested, a part 26 of the coil is depressed inwardly of the coil to apply varying resilient pressure around a thread so that as the latter is rotated within the coil the diameter measurement will remain constant if the thread is round but will vary if the thread is not round as high and low positions of the latter come successively into engagement with the inwardly depressed part. In a modification, the coil has one or more turns of oval form which are expanded or contracted if the thread is not round.As described, the coil is incorporated in a gauge of the kind described in Specification 619,080.
Patent GB-800140-A (GB)
Title: Improvements relating to the production of metal articles
Inventor: GRAHAM ALEXANDER BARBOUR
IPC: B21J5/00
Filed: 1953-12-04
Abstract: 800,140. Making turbine rotors and valves; forging. WIGGIN & CO., Ltd., H. March 4, 1955 [Dec. 4, 1953], No. 33841/53. Classes 83 (2) and 83 (4). A method of making a metal article having one or more holes therein, comprises providing a metal billet 1 with one or more blind holes 2 extending substantially lengthwise therein, filling the hole or holes with a filler, inserting the billet in a cylindrical die 4 having an annular cavity 5 lying outside the part of the die which receives the blind end of the billet, and deforming the billet by axial pressure applied by a ram 6 so that the billet metal flows radially into the cavity 5 and the filler likewise moves radially, and removing the filler by chemical attack to leave one or more empty spaces extending both axially and radially. The invention is of particular use in making a gas turbine rotor disc having cooling passages through which a cooling agent may flow to the turbine blades. The holes 2 are preferably equally spaced near the periphery of the billet and after deformation, Fig. 3, these holes extend near to the periphery of the rotor disc. The closed ends of the holes are subsequently opened to the periphery of the disc by drilling or preferably by machining a groove around the rim of the disc. The billet may consist of a nickel-copper alloy containing about 70 per cent nickel and the filler may consist of 90 per cent iron and 10 per cent manganese. The dimensions of the billet are given. Alternatively the filler may consist of magnesia dispersed in iron as described in Specification 765,199, or an iron-manganese titanium alloy, as described in Specification 763,115, [Group II]. In another embodiment, Fig. 4 (not shown), the holes 2 in the billet are drilled so that their axes lie on the surface of a cone, the apex of which faces the ram 6. This arrangement facilitates the radial flow of the filler. In another embodiment, Fig. 8 (not shown), a single axial hole is provided in the billet and after deformation and removal of the filler a single cavity, Fig. 9 (not shown), is formed in the disc. After removal of the filler the central hole leading to the cavity in the disc is tapped to receive the end of the rotor shaft on either or each face of the disc may be recessed to receive a flanged shaft which is bolted or welded in position. In another embodiment, Fig. 10 (not shown), the invention is applied to the manufacture of a poppet valve.
Patent GB-159494-A (GB)
Title: A process for the manufacture of resinous phenol formaldehyde condensation products
IPC: C08L61/10
Filed: 1920-12-01
Abstract: In the production of resinous condensation products from phenol or its homologues and formaldehyde or its polymers, the phenol and formaldehyde &c. are first heated with an acid condensing-agent until a resin is formed, then more phenol and formaldehyde are added together within a basic condensing-agent and the heating continued. The amount of basic condensing-agent employed is in such excess that after neutralizing the acid used in the first condensation the remainder considerably exceeds 10 per cent by weight of the phenolic body used in the second condensation. Fusible resins soluble in a variety of organic solvents are thereby obtained; if sufficient formaldehyde has been used, the resins may be converted by further heating to insoluble infusible products.  According to examples:-phenol or cresol and formaldehyde solution are boiled with hydrochloric acid, the resulting resin is mixed with phenol or cresol, formaldehyde solution, ammonia, caustic soda, and caustic potash, and the mixture boiled; phenol or cresol and formaldehyde solution are boiled with acetic acid, the mass is mixed with phenol or cresol, formaldehyde solution, soap, and a hydrosulphite or sulphite, and the mixture boiled; in a third example, the same ingredients are employed as in the first example, but the proportion of formaldehyde is higher, the resulting resin being transformed into an insoluble infusible product by further heating. Specifications 21566/08 and 3498/11 are referred to.  The Specification as open to inspection under Sect. 91 (3) (a) describes also the use of hexamethylenetetramine as an alternative for formaldehyde or its polymers.  This subject-matter does not appear in the Specification as accepted.