baber/WOPTO huggingface dataset:
Patent GB-1426019-A (GB)
Title: Process and apparatus for heating a furnace
IPC: F27D11/08
Filed: 1973-06-25
Abstract: 1426019 Automatic control of temperature of a furnace SOC DES ACIERS FINS DE L'EST 25 June 1973 [11 July 1972] 30155/73  Heading G3N In an arrangement for controlling the heating of an arc furnace, the temperature of the surface of the inner walls thereof is measured (e.g. by a thermocouple), the minimum of a curve of temp. measured versus time, is detected, the rate of increase of measured temp. is determined and control action is taken (either manual or automatic) when the said rate exceeds a first predetermined value for a predetermined time and simultaneously the said measured temp. is within a predetermined range above the min. value. TEMPERATURE MONITORING CIRCUIT (Fig. 1) A thermocouple sensor output is applied via a line 3 to a potentiometric recorder 2 and via a smoothing circuit 5 to an amplifier 4 the output of which is a function of the sensed temp. The amplifier output is fed to a trough detector 7, a subtractor 12 and a differentiator 8. The detector 7 detects the minimum temp. trough between two successive melt cycles of solid metal. The subtractor 12 performs subtraction between the measured temp. value and the min. temp. found by detector 7. A comparator 13 compares the subtracter output with a predetermined critical temp. difference value #Tc set by a pot 14. The differentiator 8 determines the rate of increase of measured temp. which is compared in a comparator 15 with a first predetermined value set by a pot 16. An analog AND module 17 produces an output only if the difference between the measured temp. and min. temp. is above the temp. value set on pot 14 at the same time as the temp. increase rate is above the first predetermined value. A delay switch 9, 10 prevents monitoring of the increase rate until melting is proceeding satisfactorily. The output of AND module 17 may be used to operate a warning device 19 via an OR module 18 - likewise the warning device may be operated if the measured temp. exceeds a predetermined maximum set on a pot 20. When the alarm is actuated, an operator acts to control the furnace heating. AUTOMATIC CONTROL Fig. 2 The output of the monitoring circuit, Fig. 1 in line 22 may alternatively be used to automatically control the furnace heat. When a signal appears in line 22 a relay coil 23 is energized to  close a switch 24 which starts a servomotor 36. The motor adjusts the current in each electrode of the furnace and thus the arc length, by means of a pot 37, to restore the temp. change rate to below its critical value. If despite current adjustment the temp. increase rate value fed from differentiator 8 via line 28 and delay switch 27, exceeds a "voltage reduction" value set on a pot 30 as  determined by a comparator 29, or if the sensed temp. is above the maximum limit as determined by a comparator 21, Fig. 1, an OR module 31 produces an output which energizes a relay coil 33 to open a switch 34 and cut off the servomotor 36 and to close a switch 35 whereby to actuate a tap changer 39 on a transformer 40. Thereby the main voltage to the furnace is reduced.
Patent GB-202558-A (GB)
Title: Improvements in and relating to mattress frame
IPC: A47C19/00
Filed: 1922-11-04
Abstract: 202,558. Gale, F. G. Nov. 4, 1922. Joints and connections. - Tubular end and side rails of a mattress frame are connected by a device comprising two sections, one of which 4 is secured to the side rail 1 and closes the open end of the end rail 2; the other 3 is secured to the end rail 2 and closes the open end of the side rail. The members 3, 4 are folded from flat blanks and are secured together by spot welding or other means. The member 3 supports the end rail and rests upon the side rail.
Patent GB-1080888-A (GB)
Title: Electrical plug connector
IPC: H01R13/04
Filed: 1966-07-06
Abstract: 1,080,888. Plugs for plugboards. AMP Inc. July 6, 1966 [July 26, 1965], No. 30243/66. Heading H2E. An electrical connector latch plug is essentially similar to that described in Specification 1,018,355, but the forward-projecting portions 11 of the detents 12 unite to form a nose member sleeve 10D which slides over a stabilizing member 15 extending from the plug nose 10C when pressure on the plug forces the sleeve 10D rearward relative to the plug body and so causes it to lock resilient detents 12 in the extended position. In applications where one detent is sufficient, a single tongue 11 may carry the sleeve 100.
Patent GB-465068-A (GB)
Title: Improvements in or relating to hydraulic remote control systems
IPC: F15B7/00
Filed: 1935-11-02
Abstract: 465,068. Hydraulic control systems. CLENCH, E. C. S., and AUTOMOTIVE PRODUCTS CO., Ltd. Nov. 2, 1935, Nos. 30332 /35 and 23157 /36. [Class 69 (ii)] Comprises a double-acting, liquid-pressure, telemotor control with master and slave elements connected by a pair of pipe lines. To prevent liquid under pressure returning to the reservoir when the breathing valves are opened, the pressure of the liquid in the pipe lines at the end of a resetting operation is reduced by enlarging the space containing said liquid, and then said pipe line is opened to the reservoir. The master unit comprises a reservoir body 10 and aligned cylinders 11, 12. The pistons 13, 15 are connected by a sleeve 14. The pistons are moved by a lever 16 with an arm 20 carrying a roller 22 which engages the heads 23, 24 of spring-pressed plungers 25, 26 with reduced valve heads 28 mounted in the pistons. The pistons have elongated bores 30, transverse bores with spring-pressed ball valves 34 and caps 35, and transverse passages 36 which normally permit equalization of pressure. The master cylinder is connected to a slave cylinder of the self-locking kind described in Specification 443,871. When the lever 16 is moved e.g. to the right, liquid trapped by the plunger 25 is forced into the line 38 thus raising its pressure until the piston 13 is moved. At the termination of the setting, the expanding spring 27 returns the plunger 25 and causes a predetermined quantity of liquid to be drawn from the line 35 and cylinder 11. Liquid to make up leakage is drawn through valve 34. In the construction shown in Fig. 3, the arm 20 rigidly operates the pistons. The body 10 comprises two compartments, one of which houses the handle, and the other 43 forms a reservoir. The compartment is connected to the cylinders by passages 45 controlled by byepass, spring- pressed valves 46 urged towards seats 49. The valve 46 is normally held off its seat by a pushrod 53 on a lever 50 pivoted at 51 and acted on at the other end by a spring 52 stronger than spring 48. The levers 50 are moved by cam arms 55 on a sleeve 54 rotated on moving the handle 16 by a friction clutch on the shaft 17. The arms and sleeve are returned to their central position by spring action. Adjustable stops 60 limit the movement of the lever 50. Upon moving the lever 16 to the right e.g., the piston 13 moves idly until the ball valve 46 closes. When the lever and piston 13 have been moved to the desired extent and the operator lets go, the springs tend to centralize the member 54 which movement is transmitted to the friction clutch and thus causes the piston 13 to be returned to a slight extent. During the first part of this movement when the valve is closed, the enlargement of the space 37 reduces the pressure. When the valve 46 is opened, the pressure is atmospheric so that loss of phase is avoided. Specification 443,839 also is referred to.
Patent GB-191890-A (GB)
Title: Improvements in electrical heating and cooking apparatus
IPC: H05B3/78
Filed: 1921-11-14
Abstract: 191,890. Nobbs, W. W. Nov. 14, 1921. Heating by electricity. - An electric heating device of the immersion type comprises two resistance elements in series placed flat, side by side in a metallic cover 5 compressed after the insertion of the elements into Hat tube. The elements consist of conducting wires 1, 1<1> wound on flat insulating strips 2, 2<1> and covered on each side by similar insulating strips 3, 3<1>. A metallic sheath 4, 4<1> is interposed between the insulating strips and the outer tube. The elements may be separated by an insulating strip 6, and the outer cover may be corrugated inwards along the centre line.
Patent GB-413168-A (GB)
Title: Improvements in and relating to the production of electrically heated cooking plates
IPC: B28B11/08
Filed: 1933-11-01
Abstract: 413,168. Moulding electrically-heated cooldng-plates. SHEVLIN, J. T., 15, South Street, Finsbury, London.-(Siemens-Schuckertwerke Akt.-Ges. ; Siemensstadt, Berlin.) Nov. 1, 1933, No. 30393. [Class 87 (ii).] In making electrically - heated cooking- plates 15 in which the heating resistance is embedded in ceramic material 17, the groove to receive the resistance is formed by compressing the plastic ceramic material placed in a groove 16 on the underside of the plate by a stamp 14, and forcing a grooving die 12 through a slot 19 in the compressing stamp, the grooving die being withdrawn before lifting the compressing stamp. The grooving die may be compressed either before or after the compressing stamp. The groving die may comprise a series of separate strips, which may be interchangeable, all carried by one die plate.
Patent GB-666241-A (GB)
Title: Improvements in or relating to battery cases
IPC: H01M50/169
Filed: 1948-11-23
Abstract: 666,241. Batteries. CONCORDIA ELECTRIC SAFETY LAMP CO., Ltd., and CORNISH, J. P. Nov. 9, 1949 [Nov. 23, 1948], No. 30396/49. Class 53. [Also in Group V I A cover 10 is hermetically sealed m the mouth of a battery casing 1 by injecting thermoplastic material compatible with the material of the casing and cover into the space between the outer surface of the cover and a die-plate 28 (see Group V). The cover 10 is pierced with holes through two of which the pole bolts 9 of the battery project and in a third, threaded, hole a vent plug 12 is screwed. The cover abuts against a ledge 18 on the inside of the casing and against enlarged portions 50 of the pole bolts, protuberances on the cover being received in conical depressions ;')1 in the bolts. The cover 10 and the mouth of the casing are cut away at 16 and 17 to form a channel into which the injected material flows to ensure a, good seal. During injection nuts 20 on the pole bolts are spaced from the cover 10 so that the injected material is forced into contact with the bolts, while the plug 12 is screwed home with its flange 31a seating on the cover. As described the casing 1 has three compartments into the open ends of which three covers are simultaneously sealed. Polyethylene is preferred for the casing, covers and injected material.
Patent GB-1515295-A (GB)
Title: Correlating arrangements
IPC: G01S3/786
Filed: 1975-10-09
Abstract: 1515295 Tracking radar EM I Ltd 9 Oct 1975 [10 July 1974] 30480/74 Heading H4D In an optical tracking system of the kind correlating between successive frames of a television type picture, the presence of large contrast background objects can produce significant correlation peaks which act as noise in relation to the, possibly much smaller, correlation peak due to the target. To overcome this, use is made of the fact that the target will be exhibiting a much lower displacement from frame to frame than the background object. The correlation surface is therefore analysed in terms of the displacements of the peaks to produce a histogram indicative of the velocities of the target, object &c., whereby the object can be rejected on the basis of its higher velocity. The framed video input at 1 is fed to two frame stores 2, 3, store 2 storing the first frame (which is intermittently updated) to constitute the reference frame and store 3 storing subsequent frames. At correlator 4 each element A of the frame in store 3 is correlated with a group of elements Bi of the reference frame nominally surrounding a position therein corresponding to that of element A in its frame. The (x, y) position of the resultant correlation peak f(A, Bi) represents inter frame displacement of the element A. Since the elements corresponding to the target should be positioned near the centre of the frames, the 'target' correlation peaks can be emphasized by a weighting function (6) decreasing away from said centre. The weighted displacements are analysed in histogram store 7 and the tracking signals generated by computer 8. Examples of very "peaky" correlation functions are given as are procedures to adopt when the correlation map f(A, Bi) exhibits ridges (as against peaks) giving positional ambiguity.
Patent GB-484710-A (GB)
Title: Improvements in or relating to toy balloons
IPC: A63H27/10
Filed: 1936-11-09
Abstract: 484,710. Toy balloons. WOROBJOFF, I., and FRANKE, K. Nov. 9, 1936, No. 30486. Convention date, March 13. [A Specification was laid open to inspection under Sect. 91 of the Acts, June 21, 1937.] [Class 132 (iii)] A toy balloon has an outlet nozzle b, Fig. 3, with beaded edge c to take the neck of the balloon and in cup-like form with an aperture e, in the bottom d, the edge of the aperture c being turned inwardly upwards in the form of a lip to assist the lift of the balloon. In the modified construction shown in Fig. 4, an apertured thimble f has a push fit in the nozzle band produces a whistling or hissing noise when the air is expelled from the balloon. In the construction shown in Fig. 5, a cup-like sleeve h having an inwardly lipped orifice i has a push fit over the apertured nozzle b.
Patent GB-934371-A (GB)
Title: Device for the displacement of optical components in a photographic objective
IPC: G02B7/04
Filed: 1959-09-07
Abstract: 934,371. Variable focal length lens mounts; view-finders. CARL ZEISS-STIFTUNG, [trading as C. ZEISS [firm of]]. Sept. 7, 1959 [Sept. 25, 1958], No. 30631/59. Class 97 (1). In a variable focal length objective lens mount one lens member is wound axially by rotation of a gear-wheel about an axis perpendicular to the lens axis, the gear-wheel meshing with a rack on the mount of this lens member, and a control cam coupled with the gear-wheel provides for non-linear movement of a second lens member. As shown in Fig. 1, a negative lens 1 is moved axially by a rack and pinion 4, 5, the pinion 4 having coaxial therewith a control cam 7 which is contacted by a pin 8 under a loading by a spring 10, this pin 8 being connected to the mount of positive lens 2 so that the latter is also moved axially in non- linear relation to the lens 1. Alternatively, the rotation of the control cam 7 may be increased or decreased relatively to that of the pinion 4 by the provision of intermediate gearing. The lens 2 may be carried in the same mount as a reflex view-finder so that the movements of lens 2 are communicated to the view-finder. In another form, the lenses 1 and 2 may, as shown in Fig. 3, be coupled by levers 17 and 21 to the lens components 15 and 16 of a telescopic view-finder.
Patent GB-393846-A (GB)
Title: Improvements in and relating to conduit connecting means
IPC: F16L23/24
Filed: 1932-10-31
Abstract: 393,846. Joints for tubes &c. BRITISH THOMSON-HOUSTON CO., Ltd., Crown House, Aldwych, London.- (General Electric Co. ; Schenectady, New York, U.S.A.) Oct. 31, 1932, No. 30559. [Class 99 (i).] An expansion joint comprises a tube 5 concentric with, and welded at one end to, a tube 3, the tube 5 having at its other end a flange 7 adapted to be connected either to an outer tubular member 12 carrying the similarly formed end of a tube 4 or to a machine part. An annular space is left between the tubes 3, 5.
Patent GB-1420410-A (GB)
Title: Railing structure
IPC: E04F11/18
Filed: 1973-06-27
Abstract: 1420410 Structural joints REBCO WEST Inc 27 June 1973 30604/73 Heading F2M [Also in Division E1] A railing structure comprises an upper horizontal rail assembly comprising a pair of coextensive elongate members 25 and 29 having fastener means for securing each end to a vertical surface, and wherein said fastener means comprises an angle bracket extensibly located in a slot 23 in one 25 of said elongate members and having its other limb 17 vertical for securement to a vertical surface and a channel section marking rail 33 extensibly located in the other 29 of said elongate members so as to slidably protrude therefrom at one end to a flush relationship with said vertical surfaces. The two members are non-releasably snap-fitted together by means of tongues 30 and grooves 31. The marking rail 33 carries a tab 34 which secures it to angle bracket 17 by engaging rebate 21. The lower rail is secured to the vertical surface by means of an extensible channel section member 38 which is prevented from retracting by wedge 43. T-section deck brackets may be provided and the upper rail may have a solid reinforcement. The vertical surfaces may be spaced walls or posts.
Patent GB-757963-A (GB)
Title: Improvements in or relating to fastenings for doors and the like
IPC: E05C19/02
Filed: 1954-10-25
Abstract: 757,963. Catch fastenings. LEWIN, G. E. W. Oct. 25, 1954 LOct. 28, 1953], No. 30743/64. Class 44. A catch for pivotal doors, windows, shutters or the like having a locking member 4 or 19 pivotally mounted in a shell or the like 2 or 16 attached to the door or the like 1 or 15 and adapted to engage with a fitting 9 or 23 attached to the door or like frame 8 or 22 on moving the door or the like into closed position, is characterized in that the locking member is shaped and adapted to co-operate with the fitting 9 or 23 in such a way that the member 4 or 19 is maintained released in the open position of the door or the like and is maintained in the locking position in the shut position of the door or the like by spring action provided by a curved leaf-spring 12 or 20 one end of which engages with the locking member and the other end of which engages a support 13 or 21 in the shell or the like in such a manner that the curved portion of the spring is inverted on turning the locking member from the released position to the locking position and vice versa. In one construction, Fig. 3, the locking member has two projections 5 and 6 and in the open position of the door of the like the projection 6 protrudes from the shell and as the door or the like is closed it engages a lip 7 on the fitting 9. This engagement moves the locking member so that the other projection 5 engages the rear of the fitting 9 to latch the door or the like. In this construction the support for the leaf-spring is adjustable by means of a screw 14 so that the tension of the spring can be varied. In another construction, Fig. 7, the fitting 23 has two lips 24 and 25, the lip 25 is spaced rearwardly in the closing direction of the door or the like from the lip 24 and protrudes from the frame 22. As the door of the like is closed the looking member 19 engages the extended portion of the lip 25 and is rotated to a position between the two lips 24, 25 to latch the door or the like. In this construction both the shell and the fitting are provided with teeth so that they can be engaged in recesses in the door or the like or the frame without the use of fixing screws or the like.
Patent GB-819722-A (GB)
Title: Improvements in and relating to apparatus for generating a flow of gaseous working fluid for a prime mover
Inventor: RANDALL KENNETH BARRINGTON
IPC: F02C7/277
Filed: 1955-10-27
Abstract: 819,722. Gas turbine plant. BRITISH THOMSON-HOUSTON CO. Ltd. Oct. 19, 1956 [Oct. 27, 1955], No. 30787/55. Class 110 (3). [Also in Group XII] An apparatus for generating a flow of gaseous working fluid for a prime mover such as a turbine starter for an internal combustion engine or gas turbine comprises a reaction chamber 1 into which monofuel is injected for decomposition therein. The pressure for monofuel injection is obtained by connecting the reaction chamber to a double-acting pressure intensifier 3 and using the increased pressure derived therefrom for monofuel injection. The pressure intensifier is arranged so that while fuel is being forced into the reaction chamber during a stroke in one direction, fuel is simultaneously inducted into the intensifier for subsequent injection into the reaction chamber during a stroke in the reverse direction. The reaction chamber 1 is connected by means of a duct 9 and change-over valve 8 to the pressure intensifier 3 which comprises two pistons 5, 6 connected by a rod 7 and mounted in a cylinder, the rod 7 passing through a partition plate 4 disposed across the cylinder. The spaces above the pistons 5, 6 are supplied alternately with combustion gases through the valve 8, while the spaces between the pistons 5, 6 and the partition 4 are connectible to the monofuel tank 2 through ducts 11, 12 and non-return valves 13 and to the reaction chamber 1 through non-return valves 14, duct 15 and non- return valve 16. When the pistons 5, 6 are caused to move in the direction shown by arrow A, monofuel in the space below the piston 5 is forced through the right-hand non-return valve 14, duct 15 and non-return valve 16 to reaction chamber 1. At the same time monofuel is drawn into the space below the piston 6 from the tank 2 through the left-hand non-return valve 13 and duct 12. The valve 8 is then operated. whereby combustion gases pass to the space above the piston 6 and the pistons move in the opposite direction causing fuel in the space below the piston 6 to be discharged to the reaction chamber and fuel to be drawn into the space below the piston 5. The apparatus is started by means of a device 10 containing a cordite charge. An hydraulic accumulator 18 may be provided in the fuel supply line 15. An on-off switch 19 is provided which when in the open position causes monofuel to return to the tank 2. Specification 784,121 is referred to.
Patent GB-641550-A (GB)
Title: Master copy sheet
IPC: B41M5/04
Filed: 1946-10-16
Abstract: 641,550. Duplicating. DIXON, J. F. E., and COLUMBIA RIBBON & CARBON MANUFACTURING CO., Ltd. Oct. 16, 1946, No. 30845. [Class 100 (ii)] A master sheet which can be used in either the gelatine or mirror-script process comprises a sheet of paper folded along one or more transverse lines, thereby forming panels, the outer sides of which are suitable for typing, one or more of the panels having a hectograph transfer coating leaving an uncoated margin at the top or bottom. As shown in Fig. 1, a sheet is folded along perforations 12 to form panels 10, 11, the inside surface 10a of the panel 10 having a hectograph coating so that by typing on the panel 10 a copy is formed on the panel 11 for transfer to gelatine, and by typing on the panel 11 a mirror-script copy is formed; the coating terminates short of the top and bottom of the panel 10. A sheet of protective material 13 such as oil or wax tissue paper is placed between the panels and is gummed at one edge or held by wire stitching so as to be readily removable before typing. The three sheets may be stapled together at 14, perforations 15 being formed in the panels 10, 11 to form a tab which can be torn out bringing the sheet 13 away with it. In modifications: (1) one panel is shorter than the other and instructions are printed on the projecting part, Fig. 9 (not shown); (2) a sheet is folded into a W and the coating covers two panels whose inside surfaces face each other, a protective sheet being unnecessary, Fig. 12 (not shown); (3) a coated sheet and a record sheet are folded fan-fold fashion, the projecting ends being pulled outwardly and fed around a typewriter platen, Fig. 14 (not shown); and (4) a sheet 30, Fig. 17, is folded into four panels 301 ... 30<SP>4</SP>, two of which are coated on the inside. In use, 30<SP>1</SP> is opened out as shown and closed with 30<SP>1</SP> outside 30<SP>3</SP>, whereby on typing on 301 or 302 the panels 30<SP>3</SP> and 30<SP>4</SP> are formed into master sheets.