baber/WOPTO huggingface dataset:
Patent GB-158287-A (GB)
Title: Safety chain or equivalent device for the lids of teapots, coffee pots, hot water jugs, and the like
IPC: A47J36/10
Filed: 1920-01-17
Abstract: 158,287. Cryer, E. Jan. 17, 1920. Lids.-The lid of a teapot, coffee - pot, hot-water jug, &c. is connected to the handle thereof by a chain a, cord, wire, &c. and a pair of flexible or soft copper wire grips b, the ends of which are bent around to secure the chain &c. to the knob of the lid and to the handle. In a modification, which may be used for lids with handles, one of the grips is replaced by a swivel hook, which is passed through the handle and hooked into one of the links of the chain or around the cord &c.
Patent GB-910070-A (GB)
Title: Improvements in and relating to refrigerators of the vapour-compression type
Inventor: OVERTON ALFRED GEORGE
IPC: F25B41/06
Filed: 1961-05-10
Abstract: 910,070. Refrigerating. PRESSED STEEL CO. Ltd. May 10, 1961, No. 16966/61. Class 29. In a compression refrigeration system refrigerant from the condenser 11 is supplied to the evaporator 15 via a plurality of capillary restrictor tubes, e.g. two, 16 and 17, as shown in Fig. 1, which progressively become operative or inoperative to regulate the refrigerant supply. The capillary 16 is connected to a liquid receiver 18 at the bottom of the condenser and the capillary 17 to a higher pass of the latter so that when the compressor is restarted after the evaporator has been defrosted liquid refrigerant accumulates in the condenser to a level above that of the capillary 17 and both tubes initially supply liquid refrigerant to the evaporator. As the evaporator pressure and the liquid refrigerant level in the condenser drop the capillary 17 transmits first a liquid/vapour mixture and finally vapour only. The size of the capillary tube 16 is such that the liquid seal in the receiver 18 is maintained at the lowest evaporating temperature. It is stated that the system results in the evaporator being brought down to its thermostatic cycling temperature after defrosting more quickly than is possible with a single restrictor. In Figs. 5 and 6 (not shown), three capillary tubes having connections at different levels in a liquid receiver from the condenser are employed in a refrigeration system using reverse cycle defrosting. The said liquid receiver may be made from a transparent material.
Patent GB-297859-A (GB)
Title: Improvements in circulating apparatus for steam heating systems
IPC: F24D1/00
Filed: 1927-06-27
Abstract: 297,859. Miersbe, A. June 27, 1927. Heating systems.-A steam heating system employs an injector with concentric nozzles for increasing the circulation. Steam enters the pipe a, passes through the injector to the radiators e', e<2>, and thence to a water separator f. The steam returns through pipe g to the injector, and water of condensation is removed through vessel h. A float valve r, s is provided to close the pipe g when condensate accumulates to a predetermined level. A hand-controlled valve i is provided, so that, when open, steam flows through the annular, passage I and also through the hollow core n to the space o, while the returned steam is drawn through the annular passage q. When the valve i is partly closed. the area of the passage l is diminished, and a larger proportion of steam flows through the core n, thus maintaining the suction on the pipe g. The exhaust from a steam engine may also be utilized by passing it through a pipe u having a non-return valve v.
Patent GB-547560-A (GB)
Title: Improvements in electro-magnetic switches for the remote control of electrical mechanisms
IPC: H02K7/065
Filed: 1940-11-30
Abstract: 547,560. Electromagnetic switches. NORRIS. W. H. Nov. 30, 1940, No. 17108. [Class 38 (v)] [Also in Group XV] An electromagnetic step-by-step switch particularly adapted to control the motor of an electrically-driven model locomotive and operated by current impulses transmitted along the track comprises a ratchet wheel or member 6 which carries moving contacts of the switch and is driven by a pawl 2 on the armature 1, the pawl 2 being normally out of engagement with the ratchet wheel and inertia means being provided for preventing reverse movement of the ratchet wheel during a quick succession of impulses. In the form shown in Fig. 3 the wheel 6 drives a pinion 9 carrying a flywheel 9a, the momentum or inertia of which prevents the reverse movement. In a modification, Fig. 10, the electromagnet e attracts the armature 1 and a projection 14 on this by engaging a stop 17 drives a flywheel 9a away from the position shown to which it is normally biased, and a stop 18 on the flywheel moves away from a locking pawl 15 allowing this to engage the ratchet wheel 6a and prevent reverse movement.
Patent GB-182773-A (GB)
Title: Improvements in apparatus for cooling or heating air or other gas
IPC: F28D7/06
Filed: 1922-06-21
Abstract: 182,773. Griscom-Russell Co., (Assignees of Price, J.). July 8, 1921, [Convention date]. U-tube apparatus.-A heat-exchanger intended particularly for cooling air consists of a number of gilled U-tubes opening into a divided header 9, and connected by supporting means at their bends the tubes being enclosed in a casing 5, having a straight passage for the air &c. therethrough. The tubes open into compartments 14, 15 which communicate respectively with side inlet and outlet pasages 10, 12 for the cooling liquid. In a modification, the liquid passes through groups of elements connected in series, the elements of each group being connected in parallel. In a further modificaticn, the header is divided horizontally instead of vertically. The upper ends of the elements may be connected to an horizontal supporting-plate. The top of the casing is removable.
Patent GB-564095-A (GB)
Title: Improvements in and relating to open hearth furnaces
IPC: F27B3/00
Filed: 1942-12-03
Abstract: 564,095. Open-hearth furnaces. BRASSERT & CO., Ltd., H. A., and NISSIM, R. Dec. 3, 1942, No. 17214. [Classes 51 (i) and 51 (ii)] In a reversible regenerative open-hearth furnace of substantially symmetrical shape about a transverse plane passing through its centre, the transverse section of the furnace at each end first diminishes and then increases progressively and continuously to provide venturi-shape throats for the inlet and outlet of gases, the section of the outlet passage between the throat and the entrance to the furnace checkers suffering no decrease and the minimum cross-section of the venturi-shape throat being so related to the outlet passage section and the furnace hearth section that the pressure difference in the furnace gases available on either side of the throat is completely transformed into kinetic energy at the minimum cross-section of the throat. In the furnace shown in Fig. 1, the section SO of the furnace above the bath, the minimum cross-section S1 . of the throat 12, 14, 18 and the total outlet passage area S2, between the point 18 and the checkers 22 are so related that where n is the ratio S0/S2 and HL is the difference of the static heads HO and H2 at 0 and 18. This ensures that the difference in pressure on either side of the throat is transformed completely into kinetic energy and the gas velocity at 14 is a maximum. If one assumes a fixed ratio for the pressures HO and H2, for example HO = 2H2, then HL is equal to H2 and the above formula becomes As shown in Fig. 2, the passages 19, 20 communicating with the regenerators may be provided with auxiliary passages 27 closed by a damper 28 on the inlet side of the furnace, the corresponding damper 28 on the outlet side being open by an amount which may be adjusted to bring into use the auxiliary passage 27 on the exhaust side. In such a furnace the relationship between the minimum throat section S1 and the section of the enlarged outlet flue S3 is given by the formula :- n<1> is the ratio of the outlet passage section S2 at 18 to the enlarged section S3 of the outlet passage, n is the ratio of the furnace hearth section to the section of the enlargement, H3 is the pressure in the enlargement and HL is in this case the difference between the static heads HO and H3. If H0=2H3 then HL is equal to H3 and the formula for the furnace shown in Fig. 2 becomes
Patent GB-723631-A (GB)
Title: Improvements in or relating to polyethylene films
Inventor: BERRY WILLIAM
IPC: B29C35/08
Filed: 1952-07-09
Abstract: Polyethylene films, e.g. sheet or tube, are irradiated with ultra-violet light from an artificial source of an intensity and for a sufficient time to improve their bonding properties to printing-ink.  The irradiation may be effected by low-pressure mercury-vapour discharge tubes in quartz emitting light having a wavelength in the range 3200 \fa and 1800 \fa, in air, oxygen, nitrogen or carbon dioxide under normal, sub- or super-atmospheric pressure at a temperature within the range -40 DEG  to 300 DEG  C. Polythene of M.W. 12,000 to 24,000 as a film of thickness between 0.001 and 0.020 in. may be used, plasticized with, for example, polyisobutylene and including an antioxidant.  In examples extruded film or tube, or film passing between a supply and take-up roll, is irradiated on one face by direct and on the other by transmitted radiation and shows increased bonding properties to printing-ink, used at room temperature, e.g. one comprising titanium dioxide, ethyl cellulose, a modified rosin esterified with pentaerythritol, methyl phthalyl ethyl glycollate, industrial spirits and ethyl lactate. Specification 581,717 is referred to.
Patent GB-1131165-A (GB)
Title: Apparatus and a method for depositing a liquid on discrete areas of a substrate
Inventor: ROBINSON FRANCIS BRIAN
IPC: H01L21/00
Filed: 1967-04-17
Abstract: 1,131,165. Etching. STANDARD TELEPHONES & CABLES Ltd. 17 April, 1967, No. 17427/67. Heading B6J. [Also in Division B2] An etch-resist solution is applied by means of a stylus 32 to the upper surface of a substrate which has been previously coated with a layer of conductive material, e.g. platinum, gold or a platinum/gold alloy. After applying the etch resist solution to the discrete areas, the areas are exposed to a curing process, those areas not covered by the solution are then removed using a weak acid, and finally the etch-resist solution on the discrete areas is removed ultrasonically. The substrate may be quartz, glass or ceramic. The stylus 32 is fed with liquid from a reservoir 29 and is secured to a balanced head 5 which is pivoted about a supporting member and provided with electromagnetic lifting means 14 for moving the stylus into and out of contact with the substrate, the substrate support moving relative to the stylus in accordance with a predetermined pattern.
Patent GB-377383-A (GB)
Title: Improvements in machines for deburring and smoothing the cutting edges of files
IPC: B23D73/00
Filed: 1931-06-16
Abstract: 377,383. Sharpening file teeth. MUNDORF, B., Radevormwald, Rhineland, Germany. June 16, 1931, No. 17512. [Classes 83 (ii) and 83 (iv).] A machine for resharpening the teeth of files has a tool mounted in a slide which moves across the file and presses successively on the back of each tooth to re-set and smooth it. The slide c, Fig. 2, reciprocated by a crank a carries a tool b which is mounted so that its pressure on a file tooth may be varied, Fig. 3. A cam bar i, moving with the slide, rocks a bent piece f carrying a hinged feed finger h, and serves to move the file forward a distance of one tooth pitch on each back stroke of the tool. The working edge of the tool is bevelled in the direction of movement and also at rightangles to this, so that the file teeth are gradually set over and given the correct backing.
Patent GB-681089-A (GB)
Title: Improvements in or relating to automatic electric current control systems
IPC: H02P9/26
Filed: 1951-07-24
Abstract: 681,089. Automatic current control systems. UNITED STATES STEEL CO. July 24,1951 [Dec. 29, 1950], No. 17520/51. Class 38 (iv). The output current of a generator 2 supplying a load 4 is maintained constant by controlling the excitation of an amplidyne exciter 14 supplying the generator field. The current is measured by a self balancing bridge 10 connected across a shunt 8, the positional setting of the bridge controlling the position of the rotor of a Selsyn 20, the stator of which is connected to the stator of a Selsyn 22. The rotor of the Selsyn 22 is movable by a hand wheel 24 to determine the datum setting. The output signal from the rotor of the Selsyn 22 is passed via a pre-set corrective phase shifter 28, amplifier 42, and phase-splitting transformer 50, to control the balance of the outputs of valves 52, 54 supplying the opposing control fields 16, 18 of the amplidyne 14. The voltage across the fields is limited by a gas discharge diode 66, and a rectifier 68 prevents a reversal of the exciter polarity. The output signal from the Selsyn 22 is also rectified by rectifier 30 and applied to a limiter circuit comprising amplifying valve 36 and relay 40. If the control signal exceeds a certain amplitude, the relay contacts change-over and connect the amplifier input to the tapping on a potentiometer 46. In a modification, Fig. 2 (not shown), the output of the amplifier controls a single valve controlling the amplidyne field current.
Patent GB-1027342-A (GB)
Title: Can body making machine
IPC: B21D51/28
Filed: 1963-05-03
Abstract: 1,027,342. Bending. T. E. LAXO. May 3, 1963 [May 3, 1962], No. 17585/63. Heading B3E. In a can body forming machine of the type in which a can body blank C is bent round a mandrel 12, the blank C is held against the mandrel 12 by a clamp 80 controlled by a cam 50, the profile of which can be adjusted to vary the timing and duration of the clamping. The clamp 80 is carried by rods 86 having at their upper ends a wedge block 90 which is forced downwards by rotary movement of a wedge 100 keyed to a shaft 102. The shaft 102 is rotated by a compression spring 126 via lever 110, rod 109 and lever 108 under the control of a cam 50. The cam 50 is a compound cam having two parts 51, 52 which can be adjusted by a slot and screw 54, 56 to vary the duration of the clamping operation, and the angular position of the cam 50 on the drive shaft can be adjusted by a clamping nut. The angular position of the arm 110 relative to the cam follower 120 can be adjusted by set screws 115. The blank C is bent around the mandrel by a pair of wing clamps 15, 16 which are pivoted to the machine frame at 17 and are operated by connecting rods 22 which are pivoted to cranks 24. The angular position of crank arms 24 on the shafts 28, 29 can be adjusted and the radial distance of the crank arms 24 from the shafts 28, 29 can also be adjusted.
Patent GB-540820-A (GB)
Title: Improvements in and in the manufacture of draw-hooks
IPC: B21D53/00
Filed: 1940-12-13
Abstract: 540,820. Making coupling hooks. WOODHEAD & SONS, Ltd., J. KING, J. W., and DRIVER, A. R. Dec. 13, 1940, No. 17625. [Class 89 (ii)] [Also in Group XXII] Hooks for attachment to a draw bar spring &c. are made from blanks cut or stamped from plates. The hook, Fig. 3, is made from a blank of the shape shown in Fig. 1. The parts a are stamped to increase the width of the hook at the point and the blank is then bent about the lines x-x and y-y. Holes are drilled in the, flanges d for the attachment bolts and the hook is welded at e, f. The mowsing piece l is bent up from a flat blank and is drilled for the pivot k and the releasing finger pieces p, the piece l being normally held in operative position, as determined by a stop pin o, by a spring. In a modification the hook blank has a central projection between the parts a which is bent up and welded in position between the parts of the hook. the. stamping to curve the parts a being then dispensed with.
Patent GB-329863-A (GB)
Title: Improvements in and connected with pistons for internal combustion engines, fluid expansion engines, pumps and analogous purposes
IPC: F16J9/04
Filed: 1929-06-08
Abstract: 329,863. Pattison, E. M., Curry, W. A., and Mathieson, O. H. June 8, 1929. Piston packing. - A helical packing-ring 5 is formed with end convolutions 7 which lie in diametral planes of the piston. The end 11 overlaps, and rotation of the packing is prevented by a screw or stud 10 in the packing-ring groove engaging in the gap at the end of the ring. A single helical ring may be employed extending the full length of the piston, the packing-ring groove extending through the ends of the gudgeon-pin 3, as shown. Alter. natively, two or more packing-rings may be employed, in which case the helices may be of different hands. Lubricating passages 12 may be formed through the piston wall.
Patent GB-251805-A (GB)
Title: Process and apparatus for recovering gaseous constituents from gas-mixtures
IPC: C01B17/60
Filed: 1925-07-10
Abstract: 251,805. Schroeder, M. July 10, 1925. Drawings to Specification. Purifying processes.-The separation of benzene from coke-oven gas and of ethylene from illuminating gas is referred to in connection with a process for the continuous separation under pressure of one or more constituents of a gas mixture by absorption or adsorption, the process being carried out so that the pressure of the gases remaining after separation is used to compress further amounts of the gas mixture and so' that the residual gases are heated, after leaving the separating means, by compressed gases on their way to separation.
Patent GB-492839-A (GB)
Title: Improvements in or relating to joints tight to molten materials
IPC: B21C23/30
Filed: 1937-06-25
Abstract: 492,839. Joint - making packing; squirting. HENLEY EXTRUSION MACHINE CO., Ltd., and DUNSHEATH, P. June 25, 1937, No. 17774. [Class 122 (iii)] [Also in Group XXII] A joint in a vessel or chamber for containing a hot fluid material that is solid at normal at mospheric tempera tures is provided with a seal comprising a pair of thin flanges which extend outwardly, one from each jointed part into the surrounding atmosphere and lie in close proximity to one another for the greater part of their width but in contact in the region of their outer edges. The invention is described with reference to an extrusion apparatus for metal, the seal comprising their annular flanges 30, 32 secured by screws 29, 31 to the rear wall 12 of the feed chamber and the stationary member 11 of the impeller. Each flange is formed with an outer annular surface 34 adapted to abut that of the other flange. Any molten metal escaping past the screw 28 is solidified in the annular space between the flanges. Specification 394,441, [Group XXII], is referred to.
Patent GB-994566-A (GB)
Title: Manufacture of quartz electric lamp envelopes
IPC: C03B23/049
Filed: 1964-04-29
Abstract: In a method of manufacturing a one-piece quartz electric lamp envelope having a thick-walled bulbous portion located between and merging with two thin-walled tubular portions, a thin-walled quartz tube is heat softened at a region spaced from its ends, and a compressive force is applied between its ends to upset the quartz at the softened region and cause said region to be moved along the tube while the compressive force is applied thereto to build up a thick-walled bulbous portion.  A quartz tube 31 is held in a lathe 1 by a headstock chuck 3 and the chuck 5 of a movable tailstock. The tube is rotated and heated at a point intermediate its ends by an oxyhydrogen flame <PICT:0994566/C1/1> <PICT:0994566/C1/2> <PICT:0994566/C1/3> <PICT:0994566/C1/4> <PICT:0994566/C1/5> from a movable burner 7.  The tailstock 4 and the burner 7 are both movable by a cam-operated push-rod system.  The burner is first held towards the left side of the tubing until a neck 32 is formed, when the burner is displaced fairly rapidly to the right and the tailstock gradually moved to the left to apply the compressive force (Figs. 3 to 6).  During the compressive movement the internal diameter is also decreased.  When the bulb 33 has been formed, a further neck 35 is formed.  Various other types of bulb are shown in Figs. 7 to 11. To obtain a more spherical bulb, blowing may be used.
Patent GB-587367-A (GB)
Title: Improved sealing means for permitting the passage of wire or the like into or out ofa chamber containing fluid under pressure
IPC: B29C48/06
Filed: 1944-09-20
Abstract: 587,367. Cooling extruded bodies. PIRELLIGENERAL CABLE WORKS. Ltd., and HORLEY, R. E. Sept. 20, 1944, Nos. 17927/44 and 3800/45. [Class 87 (ii)] A fluid-pressure cooling chamber through which a wire or similar extruded body passes after being coated in an extrusion apparatus has a fluid-tight seal consisting of a length of flexible tube 5 held in contact with the wire, as it passes into or out of the chamber, by fluid pressure acting on its outside surface. The chamber 1, Fig. 1, has an aperture surrounded by a reentrant tube 7 over which one end of the tube 5, e.g., of rubber, fits, the other end fitting over a similar re-entrant tube 8 fixed to the internal support 9. Fluid, under pressure, supplied through the inlett tube 3 for cooling the wire 2 also provides the pressure necessary to maintain the tube 5 in contact with the wire. When a separate sealing chamber is used, Fig. 2, a fluidtight rigid tube 12 is used to join the sealing chamber 11 to the cooling chamber 1. To facilitate inspection of the wire the cooling chamber may be mounted, e.g., on rollers, to be movable away from or towards the extrusion chamber in the direction of the axis of the wire, a breakable seal being fitted between the cooling chamber and the extrusion apparatus. The chamber may be moved by, e.g., a hydraulic cylinder.
Patent GB-596013-A (GB)
Title: Improvement in railroad pedals
IPC: B61L1/04
Filed: 1945-07-13
Abstract: 596,013. Train-actuated electric contact devices. SOC. D'ELECTRICITE MORS. July 13, 1945, No. 17957. Convention date, July 18, 1944. [Class 105] Train-actuated devices for signalling the passage of a train which include pneumatic means for delaying the return of the apparatus to normal have springs or other yielding members such as a rubber block in compression, tension, or torsion, interposed in the drive between the directly actuated pedal and the pneumatic device thereby avoiding a shock transmission and providing a resilient intermediary between the pedal and the pneumatic means retarding the return movement. The arrangement shown comprises a bellows 14 which is vented to atmosphere through a large port 15 when a valve plate 10 is removed therefrom by the downward movement of an arm 9 under the pressure of a spring 23 compressed by the shock depression of the pedal arm 3 on passage of a train wheel 2. When the train has completely passed, a spring 11 raises the valve-plate arm 9 whereby the large port 15 is closed and the bellows 14 then compressed whereby an electric contact plate 21 carried by a diaphragm portion 20 is moved to close contact 21-22 by the distention of the diaphragm, Fig. 3. The air pressure slowly falls by reason of a throttle aperture 16 so that the contact 21-22 is closed only for a limited period and provided that the valve-plate arm 9 is rising. The bellows contact 21-22 in conjunction with a contact 6--7 directly actuated by the arm 9 ensures that a signal is given only by correct operation of the apparatus and that a false signal by a permanently depressed pedal, e.g. accidentally wedged under the rail, cannot be given. The separation of the pedal arm 3 is limited by a stop 24 on the valve plate arm 9. The pedal which may have a rubber-covered head may be of sufficient length to be engaged by successive wheels whereby the pedal will not be repeatedly actuated and the signal will only be given after the train has completely passed. The pivotal mounting 4 may be substituted by a crossed-spring arrangement as described in French Specification 798,538.