baber/WOPTO huggingface dataset:
Patent GB-531260-A (GB)
Title: Improvements in and relating to the control of induced draught, gasfired steam boilers and hot water boilers
IPC: F23N3/04
Filed: 1939-06-24
Abstract: 531,260. Igniting burners. THERMOCONTROL INSTALLATIONS CO., Ltd., TAYLOR, F. M. H., and COX, A. E. June 24, 1939, No. 18463. [Class 75 (iii)] [Also in Group XII] In an induced draught gas-fired boiler furnace having a main burner 24 controlled by a valve 23 and pilot and igniting burners 2, 3 controlled by an ignition valve 8 arranged in a byepass pipe 11 the furnace is started by pressing button 5 to close a circuit in a thermal switch 6 and supply current from the mains 9, 10 to a motor 7 which opens the valve 8 to supply gas through the pipe 12 to the pilot and ignition burners 2, 3. The gas is lighted by a torch and the flame from the burner heats a thermocouple tip 4 and closes the switch 6 which remains closed after the button 5 is released. The valve 8 continues to open and to supply an increased amount of gas to the ignition burner 3. If there is no flame adjacent the thermocouple the valve 8 closes immediately the button 5 is released. When the valve 8 is fully open or nearly so the motor 7 closes a switch 13 and current flows through mains 9, 14 to a motor 15 for driving an induced draught fan 16a the delivery conduit 16 of which is provided with a switch 17 closed by the pressure of air in the conduit. Current then flows through the mains 9, 18 to the motor 22 which opens the main gas supply valve 23 for the burner 24. Instead of air pressure operated switch 17 an escapement or centrifugal type of switch may be employed. The circuit 18 includes an explosion switch 21, low water control switch 19 and a switch 20 controlled by pressure or temperature in the boiler. In the event of abnormal conditions arising in the boiler or furnace the circuit 18 is broken and the valve 23 closes. If the induced draught fails switch 17 opens and valve 23 closes. Total flame failure inside the furnace 1 causes cooling of the tip 4 and valve 8 closes.
Patent GB-1501562-A (GB)
Title: Signal detection apparatus
IPC: G10L25/51
Filed: 1976-05-06
Abstract: 1501562 Selective signalling INTERNATIONAL BUSINESS MACHINES CORP 6 May 1976 [23 June 1975] 18560/76 Heading G4H [Also in Division H4] Apparatus for detecting the presence of a complete analogue waveform derives a digital format from the input signal and compares it with a reference digital format to produce a detect signal, an output being produced in response to a predetermined plurality or count of detect signals in a prescribed period. A circuit for recognizing a particular pair of frequencies (e.g. a telephone touch-tone dial input) thresholds the waveform, the thresholder feeding a shift register, true or inverse outputs of selected stages of which are combined in an AND gate. The gate output sets a flip-flop and resets a clock-driven counter which, if it reaches a predetermined count, will reset the flip-flop. During the set state of the flip-flop, the clock signals are also used to drive a second counter and during the reset state are used to reset it. If the second counter reaches a predetermined count, an output is produced to indicate recognition of the frequency-pair. Similar circuits, connected in parallel, may be used to recognize other frequency-pairs. A thresholder and a shift register may be used in common by these circuits.
Patent GB-1350825-A (GB)
Title: Exposure indicating and or control apparatus
IPC: G01J1/42
Filed: 1971-06-02
Abstract: 1350825 Electron microscopes SOC D'OPTIQUE PRECISION ELECTRONIQUE ET MECANIQUE 2 June 1971 [2 June 1970] 18584/71 Heading H1D An electron microscope which records the image photographically is provided with a conductive screen which can be moved into the path of the beam to measure the beam current so that the required exposure time can be calculated. In Fig. 1 a metallized fluorescent screen 3 is rotatable by an external handle 8 from the position shown where it intercepts the beam into an inoperative position, and is coupled to an external conductor 14 by a wire 11 running along the axis of rotation; rotation of the handle 8 also actuates a switch 15. The conductor 14 is connected to earth through a resistance, and the voltage across the resistance forms the input to an amplifier the output from which feeds firstly a galvanometer giving a direct reading of beam current (i.e. image brightness), secondly a threshold circuit which indicates excessive brightness, and thirdly an exposure calculating circuit. The latter comprises a capacitor which stores a voltage corresponding to the brightness and provides the input to an integrating circuit providing one input to a comparator. The other input of the comparator is set in accordance with the sensitivity of the photographic plate, and when the output of the integration is equal to it, an output from the comparator operates indicating means or may be used to terminate the exposure. In operation, the movement of the screen 3 to its inoperative position opens switch contacts which isolate the capacitor from its input and allow the integrating circuit to start operating.
Patent GB-496542-A (GB)
Title: The direct casting of sheet like metal structures
IPC: B22D11/06
Filed: 1938-06-22
Abstract: 496,542. Casting and rolling sheets. WILLIAMS, W. P. (American Rolling Mill Co.) June 22, 1938, No. 18606. [Classes 83 (i), 83 (ii), and 83 (iv)] Composite &c. sheets.-Pools of molten metal 4 flowing down the constrictions between a separate central well 2 and a pair of cooled roll surfaces 1<1> form solidified surfaces 19 to enclose the same or a different metal 18 flowing from the central well to form, continuously, sheet metal of composite or homogeneous structure. The central well 2 is made of refractory material and is curved at its wedge tips 17 and is adjustable up or down by screws 3, Fig. 3, to vary the thickness-defining space between it and the copper shells 11 of the rolls 1. The shells 1<1> are kept cool by a cooling medium supplied to the space between the shell and the roll proper from, e.g. trunnion pipes 15. The ends of the well are closed by refractory damming blocks 7 slotted to receive edge forming rolls 6, the solidification of the edges being assisted by steam supplied by cooling nozzles 22.
Patent GB-453460-A (GB)
Title: Means for spreading rows of cotton, twine, fine wire or the like
IPC: A01G13/10
Filed: 1934-12-10
Abstract: 453,460. Holders for reels of thread &c. THOMSON, R. C., 23, Paulton Square, Chelsea, London. Dec. 10, 1934, No. 18686/35. Divided out of 451,335, [Group I]. [Class 18] [See also Group I] In apparatus for spreading simultaneously, lines of cotton, twine, fine wire, &c. from several sources of supply carried by a single holder, the holder is made in the form of a longitudinally divided cylindrical container arranged when closed to enclose the. supplies, and provided with means, such as partitions, dividing it into compartments in which the supplies are snugly housed coaxially, the cotton &c. being paid out through suitable openings. The container may comprise two long semi-cylindrical members 8, 9 hinged together along one edge, the member 9 being provided with partition discs 11. It may be made of sheet metal reinforced by channel-section pieces 12 at intervals. The members 8, 9 and discs 11 may be of such sizes that when the container is closed a slot is left throughout its length for the emergence of the cotton &c. Alternatively, slots may be provided in either member 8, 9. The container may be held closed by a wire catch at the centre and fastenings at the ends. There may be overlapping discs 14, 15 at one end with a clamping screw 16 on one disc passing through a slot in the other. The other end may be provided with a clip comprising a pivoted bolt- 18 carrying a wing-nut 19 and a cross-bar 19<a> to engage an abutment 20. By means of this clip the holder may be fastened to a sectional pole, the sections of which are connected together in line, or at an angle, by clamping sleeves fitted with similar clips. In a modification, the parts 8, 9 slide concentrically and have cylindrical ends fitting one within the other. They may be clamped in open or closed position by a screw and wing-nut. The reels or the like may be mounted on spindles, or provided with pivots, fitting into slots or apertures in the partitions. Cross-bars may be employed instead of partition discs.
Patent GB-319716-A (GB)
Title: Improvements in or relating to telephone systems
IPC: H04Q3/00
Filed: 1928-06-27
Abstract: 319,716. Automatic Telephone Manufacturing Co., Ltd., Beale, C. E., and Taylor, R. June 27, 1928. Automatic exchange systems. - In a connector having two sets of wipers, wiper selection is determined according to the route of access 1, 2, 3 or 4, 5, 6 by a relay SW included in the speaking wire 4 in series with the line relay A. As shown, relay SW energizes over its lower winding, and locks over its upper winding when release relay B operates, the lower winding being then short-circuited. In a modification, relay A does not energize in series with relay SW, but the latter locks at once over its upper winding and short-circuits its lower winding to allow relay A to operate. Relay C holds up in parallel with the vertical and rotary magnets during the impulse trains, and relay E also operates during the last train. If the wanted line is busy, relay G energizes and sends back a busy signal in the usual manner. If the wanted line is idle, switching relay H energizes when relay C falls back, and after an interval when relay E relapses, ringing current is applied through ring cut-off relay F, which pulls up on the reply of the called party and locks in series with relay E. Back-bridge relay D energizes and reverses the connections to line relay A in the usual manner. A contact 44 controlled by relay SW serves to operate a buzzer when the test jack springs are short-circuited to enable an attendant to ascertain the set of wipers in use.
Patent GB-496195-A (GB)
Title: Improvements in colour development and colour forming developers
IPC: G03C7/34
Filed: 1937-05-24
Abstract: 496,195. Colour photography. KODAK, Ltd. (Eastman Kodak Co.) May 24, 1937, No. 18740/38. Divided out of 496,245. [Class 98 (ii)] A colour forming developer comprises an aromatic amino developing agent and a colour former consisting of a salicylidene amide of a carboxylic acid, for example salicylidene acetamide and salicylidene benzamide. The developing agents may be mono-, di-, and tri-amino aryl compounds, such as aminophenols and aminocresols and their halogen substituted derivatives, aminonaphthols, pphenylene-diamine, and alkylphenylenediamines such as diethyl-p-phenylene-diamine, monomethyl-p-phenylenediamine, dimethyl-p-phenylene-diamine and o-aminodiethylaniline, toluylenediamines, alkyl-toluylenediamines and aminodiphenylamines, including the hydrochlorides and sulphates. An example of a suitable developing formula containing the colour formers is given. The colours formed are blue to blue-green. The colour formers may also be incorporated in the emulsion before or after exposure, and may be adsorbed upon the silver halide grains. The emulsion may be on films, plates, or paper, and gelatine or other colloid may be employed in the emulsion. Material comprising several differently sensitized emulsions on one or both sides of the support or comprising emulsions of the mixed grain type may be used. The dyes formed may be decolourized by an oxidizing agent such as chromic acid. Specifications 427,472, 427,516, 427,518, 427,520, 440,032, 440,089, and 447,092 are referred to.
Patent GB-633476-A (GB)
Title: Improvements relating to musical instruments
IPC: G10D9/04
Filed: 1945-07-21
Abstract: 633,476. Wire and rod springs. SOMERVILLE, J., (trading as RENO ELECTRICAL & ENGINEERING CO.). July 21, 1945, No. 18751. [Class 108 (iii)] Also in Group XXXVIII] A cantilever spring which can be readily inserted into its mounting in which it is locked when stressed into its operative position has a projection 3 at the fixed end of the spring 1, directed away from the convex side and a second projection 2 in the opposite direction. This end of the spring is inserted through the hole in the mounting 4 and when the free end of the spring is stressed into position on the abutment 6 the pressure holds projection 3 upwards against the right-hand face of the mounting 4 and the projection 2 downwards against the left-hand face. Longitudinal movement is thus impossible. In modifications the projections are formed by bending the spring and the spring may be doubled back on itself to provide a graduated increase in resistance. In further modifications a screw replaces one abutment and may be used to vary the spring tension either by its end pressing on the spring or by having a head shaped to act as a cam. The locating projections may alternatively be at the free end of the spring to engage around the abutment.
Patent GB-582915-A (GB)
Title: Improvements in and relating to insulating bushings for electrical apparatus
IPC: H01B17/30
Filed: 1944-10-02
Abstract: 582,915. Two-part couplings ; mounting terminals ; insulators. BRITISH THOMSONHOUSTON CO., Ltd. Oct. 2, 1944, No. 18797. Convention date, Oct. 1, 1943. [Classes 36 and 38 (i)] An insulating bushing in an opening 8 in a tank wall 12 comprises a tubular portion 17 to which is cemented a ring 52 with a shoulder 54 for engaging a nut 55 screwing into a nipple 50 welded to the tank wall. The bushing houses terminals 19, 33 which are screwed together. The terminal 19 has a cup-shaped member 20 having a concave surface 37 and the terminal 33 has a conical nose 38 to fit the concave surface closely. The ends of a lead 15 extending through terminal 33 are turned over a washer 40 which is rotatable on the terminal to prevent the ends being cut when the terminal 33 is screwed home. A pigtail 31 is secured to a bolt 24 which screws into the terminal 19 which is secured by a screw 28 against rotation in the tubular portion. The terminal 33 is cemented in a hand-grip 42, and washers 18, 56 are provided between the ring 52 and the tank wall and between the hand-grip and the tubular portion 57 of the bushing.
Patent GB-650432-A (GB)
Title: Improvements in or relating to concentric conductor electric cables
Inventor: WESTON WILLIAM KIRBY
IPC: H01B11/18
Filed: 1945-05-10
Abstract: 650,432. Concentric cables. STANDARD TELEPHONES & CABLES, Ltd. May 10, 1945, No. 18818/47. Divided out of 650,425. [Class 36] A concentric-conductor cable, comprising coaxial central, intermediate and outer conductors, has its intermediate conductor divided into inner and outer conductors separated by a thin magnetic screen. The screen may consist of a winding of steel tape having a short lay or of two windings 2, 3, each wound with a short lay but in opposite directions. The inner and outer conductors 1, 4 are formed either by a multicopper-tape spiral having a long lay or a single tape folded into a tube with abutting edges, projections being provided as in the parent case. The intermediate conductor is covered with a thin layer of a solid polymer of ethylene and is spaced from the central and outer conductors by slotted insulating washers to provide air spacing. This outer conductor is formed by copper tapes side-by-side with a long lay and is covered by a winding of steel tape with a short lay to form an electromagnetic screen and an outer lead sheath. The Provisional Specification refers to Specifications 458,772, 459,518, 476,098 and 478,768.
Patent GB-613641-A (GB)
Title: Improvements relating to bobbins
IPC: B65H75/14
Filed: 1946-06-24
Abstract: 613,641. Bobbins. ASTELL, L. F., and HERRBURGER BROOKS, Ltd. June 24. 1946, No. 18841. [Class 120(iii)] In a bobbin comprising two parts (a flange and hollow shank, and a flange) moulded in synthetic resin and screwed together, the separate flange 3 is recessed at 6 to receive the end of the shank 2, the recess 6 having a threaded wall 8, and a plain wall 9 engaged by a plain wall 10 on the shank, the end of which seats on the bottom 11 of the recess. The outer wall of recess 6 may be threaded, instead of the inner wall as shown, the inner wall then being plain. The two parts may be screwed together after shank 2 has cooled but before flange 3 has cooled, to ensure a shrink fit. Adhesive may be applied to the inter-engaging surfaces.
Patent GB-1013615-A (GB)
Title: Improvements in or relating to a road-head support system for mines and a method forthe operation thereof
Inventor: HISLEY GERARD
IPC: E21D23/00
Filed: 1963-05-14
Abstract: 1,013,615. Advancing mine roof supports. GULLICK Ltd. May 13, 1964 [May 14, 1963], No. 18962/63. Heading E1E. A hydraulic actuated advancing mine roof support system comprises a forward roof support element A Fig. 1 in advance of the gear head (shown in broken lines) and having roof bars 12 projecting rearwardly over the gear head and forwardly towards the stable face S, a rear roof supporting element C having a roof bar 12 projecting forwardly over a gear headcarrying element B also having roof bars 18 extending over the gear head and having a skid 16 Fig. 2 on which the gear head is mounted; the three said support elements A, B, C being connected in line by hydraulic rams 11 for sequential advance such that after the first cut element B is lowered, advanced and reset, during the second cut the forward support element A is advanced followed by the rear element C, after completion of the second cut element B is again advanced and after the third cut elements A, C are sequentially advanced prior to the fourth cut which completes the cycle. As shown three groups of elements A, B and C are arranged in parallel and two of the groups are each associated with forward and rear ripping lip support elements D, E having roof support bars 24, 26 and hydraulic props 22, 25. Initially supports D, E are close up to C and after the second cut are moved up to C and a web of ripping equal in depth to two cuts is taken during the fourth cut. For the drawing off operation elements E are closed up to D, D is closed up to C and E is closed up to D again.
Patent GB-1033459-A (GB)
Title: The manufacture of silicon devices
IPC: H01L21/24
Filed: 1965-05-05
Abstract: 1,033,459. Semi-conductor devices. LICENTIA PATENT-VERWALTUNGS G.m.b.H. May 5, 1965 [May 8, 1964], No. 18995/65. Heading H1K. A silicon body comprising a junction is provided with an electrode by depositing successive layers of nickel, gold, nickel, gold, heating and then attaching a conductive member by using a lead-indium alloy containing 30-80% of lead. In the embodiment the coatings are 0À1, 2À0, 1À0 and 2À0 Á thick respectively. The PN or resistivity junction may be provided by diffusion and the wafer cut after the plating processes to provide a plurality of diodes with attached electrodes.
Patent GB-847260-A (GB)
Title: Improvements in or relating to the production of concrete piles
Inventor: HOLMES ARTHUR BRANNAM
IPC: E02D5/42
Filed: 1957-06-17
Abstract: 847,260. Cast in-situ concrete piles. HOLMPRESS PILES Ltd. June 16, 1958 [June 17, 1957], No. 19067/57. Class 68(2). A method of forming a cast in-situ reinforced concrete pile in which concrete charged into a drive tube is compacted by compressed air is characterized in that the maximum air pressure is limited by using the drive tube helmet and tup as a dead load safety-valve. A drive  tube 1 has a detachable shoe 2 and is driven by a tup 5 acting on a helmet 4 through a dolly 6. Concrete 7 is placed in the tube and compressed by air introduced through the sealed pipe 9. The top of the drive tube is by a gasket 8 between the tube and the helmet. Specification 808,125 is referred to.
Patent GB-838576-A (GB)
Title: Improvements in or relating to bearing assemblies for internal combustion engines
IPC: F02F7/00
Filed: 1958-06-16
Abstract: 838,576. Joint-making packing. GENERAL MOTORS CORPORATION. June 16, 1958 [June 14, 1957], No. 19129/58. Class 122 (3). [Also in Group XXVII] A gasket 28 between an oil sump 13 and a crankshaft bearing cap 19 has inturned ends 31 extending between the cap 19 and crankcase flange 12 and terminating at an annular felt sealing ring 24 around the crankshaft. The gasket 28 is pressed into a recess 33 in the cap 19 by the turned-over edge of the oil sump and is also provided with short projections 32 fitting between the oil sump 13 and crankcase flange 12 and of the same thickness as the normal gasket around the remainder of the crankcase flange 12. Leakage of oil along the crankcase is reduced by an oil throw-off flange 23 and drain groove. The arcuate sealing surface of the gasket in contact with the cap 19 may be provided with peripheral beads.
Patent GB-130619-A (GB)
Title: Process for the Purification of Nitrocellulose.
Inventor: DUCLAUX JACQUES
IPC: C08B5/04
Filed: 1919-08-02
Abstract: 130,619. Duclaux, J. Aug. 25, 1913, [Convention dote]. Cellulose nitrates.-Nitrocellulose is purified and recovered from substances containing it, such as old or damaged powders, waste celluloid, &c., by forming a solution, for example, in acetone, methyl or ethyl alcohol, methyl formate or acetate, or ethyl formate, and precipitating the nitrocellulose from the solutions by addition of sodium carbonate, of organic liquids such as benzine, toluene, xylene, carbon tetrachloride, chloroform or other chlorinated hydrocarbons, or the hydrocarbons which occur in natural petrol. A quantity of benzine or other organic liquid insufficient to produce precipitation may be added to the nitrocellulose solution, which is then precipitated by addition of water. The precipitates may be washed and boiled with water, the vapours being condensed to recover the volatile solvents. The water may contain sulphuric acid or sodium carbonate. The Specification as open to inspection under Sect. 91 (3) (a) describes also the purification of the solution of nitrocellulose by dialysis through membranes of viscose or of cellulose precipitated from cuprammoniacal solution or of denitrated nitrocellulose under a pressure equal to or greater than the osmotic pressure. The impurities pass through the membrane. This subject-matter does not appear in the Specification as accepted.
Patent GB-168043-A (GB)
Title: Improvements in and relating to pulleys
IPC: F16H55/38
Filed: 1921-07-15
Abstract: 168,043. Williams, M. F., and Plaisted, H. M. Aug. 19, 1920, [Convention date]. Pulleys.-In order to promote adhesion and to expel air between belts and high-speed pulleys, the face of the pulley is provided with transverse grcoves, which are deepest and widest in the middle and taper to each edge. To reduce the humming noise due to the serrated surface, the trailing flank of each groove is rearwardly inclined at a considerable angle to the radius. Figs. 1 and 2 show a crowned pulley in which the grooves are formed with a straight bottom C by a slotting-tool &c. acting parallel to the shaft, the grooves vanishing at the sides of the pulley. The leading faces A of the grooves may be radial, the other faces B being inclined. Air is discharged from the ends of the grooves, which are not covered by the belt. In flat-faced pulleys, the bottom of the groove is made concave, to produce the desired form. In the Specification as open to inspection under Sect. 91 (3) (a) the pitch and width of the grooves corresponded approximately to those of the wrinkles produced in a belt when it passes round a small pulley. This subject-matter does not appear in the Specification as accepted.