baber/WOPTO huggingface dataset:
Patent GB-963258-A (GB)
Title: Electronic apparatus for the detection and elimination of irregularities in thread
IPC: B65H63/06
Filed: 1960-08-09
Abstract: 963,258. Measuring electrically. J. S. RIERA. Aug. 9, 1960 [Aug. 14, 1959], No. 27564/60. Heading G1N. Defects in a thread are detected by causing the thread diameter to vary an impedance in series with a fixed impedance and an A.C. supply, rectifying and differentiating the voltage developed across the variable impedance and using the voltage developed to perform one or more of cutting the thread, indicating passage of the irregularity and stopping the machine. In Fig. 1, the thread passes between a condenser comprising a fixed plate 4 and a movable plate 3, both of which bear on the thread. When a defect passes between the plates of the condenser which is connected in series with an A.C. supply and a fixed resistor 5 its capacity varies. The voltage developed across it is rectified at 19 and differentiated at 21 so that only sudden variations in the thread are detected, amplified at 23 and used to operate a thread cutter 26. The same signal may operate an indicating device or be used to shut down a machine working on the thread. Condenser construction. (Figs. 2 and 3). The thread passes between a fixed steel plate 4 clamped in a groove in an insulating block 12 by screw 10 and diverging at 9 from the block and a spring steel plate 15 clamped at its end remote from the fixed plate by screw 16. The edge of plate 14 is bevelled to allow the thread to enter. Modifications. The voltage across the fixed instead of the variable impedance may be used and the impedance in series with the condenser may be another condenser or an inductance.
Patent GB-1347709-A (GB)
Title: Electric ignition and control systems for fuel burners
IPC: F23Q7/12
Filed: 1971-06-11
Abstract: 1347709 Electrical ignition and control systems for burners ROBERTSHAW CONTROLS CO 11 June 1971 [12 June 1970] 27582/71 Headings F4F and F4T A fail-safe ignition control system for a fuel burner 10 employing an electrical igniter 14 with a positive temperature coefficient of resistance as a flame sensor is energized by a transformer 16 when pole 28 of a switch 26 contacts terminal 44 under the action of a thermostatic switch 24 in response to a demand for heat thereby energizing a wire 128 and igniter 14 through a switch 56 and causing wire 128 to expand and pivot a lever 132 anti-clockwise so as to open a switch 90 and close a switch 98 thus completing a circuit through a fuel valve 12 to burner 10 which therefore opens and the burner is ignited. So long as there is a burner flame the igniter 14 presents a high resistance in parallel to a holding coil 168 which is therefore able to retain a lever arm 72, but on flame failure the lever arm is rotated by a bias spring 76 to open switches 56 and 106 and close valve 12 whereupon the system is recycled for re-ignition by the contraction of wire 128 as it cools. Lever 72 may also be released if the current through igniter 14 is too great by the over-expansion of wire 128 and engagement between a leaf-spring 152 and the head of a bolt 80. Use of these two safety mechanisms operate in the event of power failure and faults or short circuits to igniter 14, wire 128, coil 168 and diodes 180 and 182 which are provided to rectify the voltage across coil 168. A resistor 32 is normally connected in series with igniter 14 across a low voltage tap 42 by switch 26 when there is no demand for heat, so that the igniter is always at least partially energized thereby minimizing thermal shocks. In an alternative embodiment a time delay relay coil is provided in parallel with fuel valve 12 to trip a switch a predetermined time interval after ignition has been initiated which, by putting a small resistance in parallel with coil 168, will cut out the fuel supply unless there is a burner flame to activate coil 168. In a further embodiment instead of a time delay relay coil a bi-metal operator is provided wound with a heating coil in series with valve 12 and controlling a double pole double throw switch, and two taps are provided on the secondary of the transformer so that igniter 14 has three different energization levels -for standby, for ignition and for flame proving.
Patent GB-156372-A (GB)
Title: Automatic electric regulator
IPC: H02P9/24
Filed: 1919-11-07
Abstract: 156,372. Gehrig, Y. Nov. 7, 1919. Regulation, automatic systems and apparatus for. - Relates to automatic regulators for regulating the voltage, current or output of dynamoelectric machines or circuits of the kind in which a resistance is alternatelv introduced and shortcircuited by a switch having one contact constantly vibrated by any kind of mechanical or electro-mechanical means into engagement with a counter-contact the position of which is automatically adjusted by an electromagnet excited by the pressure, current or output to be regulated. According to the invention, the countercontact is connected through a yieldable coupling with the armature of the electromagnet. The regulating resistance may be divided into sections connected in series or parallel and each controlled by a short-circuiting switch. In the arrangement shown in Fig. 1, the resistance w in the excitation circuit of the generator a is short-circuited periodically by the inter-engagement of the contact h with the contact k. The contact k is continuously reciprocated into engagement with the counter-contact h by a crank formation on the shaft of the generator. The duration of contact is determined by the position of the counter-contact which is connected with the voltage-controlled core p through a spring r. In the arrangement shown in Fig. 2, the contact k is reciprocated by an eccentric g and the counter contact h is mounted on a spring blade r which tends to bring the contact into engagement with the contact k. The position of the contact k is determined by a stop u on an exten sion of the core and it is free to move upwards independent of the core. In another arrangement the resistance is divided into two sections and two switches operated with a phase displacement of 150 degrees are employed one from each section. The system may be used for the automatic regulation of a circuit containing incandescent lamps. The two sections of resistance may be located in two separate parallelconnected parts of the field winding.
Patent GB-996595-A (GB)
Title: Improvements in or relating to novolak resins
IPC: C08G8/24
Filed: 1961-07-31
Abstract: A method of preparing a novolak which forms a hardened foam mass on heating in the presence of hexamethylene tetramine comprises the steps of reacting at least 3 gram-molecules of formaldehyde with 1 gram-molecule of trifunctional monohydroxybenzene in a basic medium until from 2.00 to 2.50 gram-molecules of formaldehyde per gram-molecule of phenol are bound, neutralizing the mixture, adding such an amount of a bifunctional hydroxybenzene to the reaction mixture that after such addition the ratio in gram-molecules of total tri-functional and bi-functional) monohydroxybenzene to total formaldehyde in the free and bound states is at least 10 : 9 and at most 11 : 9, acidifying the mixture, and causing the mixture to react by heating until a novolak is formed.  "Trifunctional hydroxybenzene" denotes a hydroxybenzene which, in reaction with an aldehyde, is trifunctional and can consequently bind up to three molecules of formaldehyde per molecule, for example: phenol, m-cresol, and 3,5-xylenol.  "Bi-functional hydroxybenzene" denotes a hydroxybenzene which, in reaction with an aldehyde, is bi-functional and can consequently bind up to two molecules of aldehyde per molecule, for example:  o-cresol, p-cresol, 2,3-xylenol, 2,5-xylenol and t-butyl-phenol.  A hardened foam mass is obtained by heating the novolak with hexamethylene tetramine in weight proportions of 100: from 8 to 14 and, if desired, surface-active substances, gas forming substances (e.g. ammonium carbonate), filling agents and dyes, and heating the resulting mixture.  In preparing the novolak the amount of basic substance (alkali and alkaline earth metal hydroxides) used is preferably from 0.06 gram-equivalent at 65 DEG  C. to 1 gram-equivalent at 0 DEG  C. per gram-molecule of hydroxybenzene. In a typical Example: (1) 3 gm. mols. of phenol and 9 gm. mols. of formaldehyde are reacted in the presence of calcium hydroxide until 2.34 gm. mols. of formaldehyde per mol. of phenol has reacted. After adding 7.5 g. mols. of o-cresol reaction and neutralizing reaction is continued, with the addition of acid. After neutralization and the removal of water, a brittle resin is obtained.  This is with hexamethylene tetramine and on heating gives a foamed product.
Patent GB-665070-A (GB)
Title: An improved pressure gauge
IPC: G01F1/37
Filed: 1949-10-28
Abstract: 665,070. Hydrostatic pressure gauge. LANDIS & GYR SOC. ANON. Oct. 28,1949 [Nov. 11, 1948], No. 27726/49. Class 106 (ii). [Also in Group XXIX] A pressure gauge for use with apparatus for the production of a differential pressure, comprises a bell in the shape of a sector of a cylinder pivotally mounted in a surrounding vessel containing an obturating fluid so as to be rotatable about the axis of said cylinder, the interior and exterior of the bell being respectively connected to the two sides of the differential pressure apparatus so that the angular position of the bell, which is communicated to indicating means, represents a measure of the differential pressure. A pressure gauge in a flow-moter for use in a domestic heat meter comprises an immersion bell 1 in the form of a sector of a cylinder attached by an arm 2 to a shaft 3 rotatably mounted in a casing 4 surrounding the bell 1 and partly filled with a sealing liquid such as water or oil while the upper parts of the bell 1 and casing 4 are air or gas-filled. The shaft 3 extends through a gastight joint such as a grease-box 14 and has secured thereto an arm 17, the end of which is connected to the casing by a tension-spring 16. The air chambers of the bell 1 and casing 4 communicate through pipes 6, 7 and vessels 9, 10 with a pipe 11 carrying the heating fluid respectively above and below a constriction 12, the fluid filling the vessels 9, 10 to a " 0% " mark when there is no flow and to a " 100% " mark with maximum flow. The relative size of the vessels 9, 10 is chosen to ensure that when there is no flow the total air space in each system is the same while the spring 16 is such that its tension just supports the bell 1 when almost immersed during no flow. When fluid flows in the pipe 11 its level rises in the vessel 9 and falls in the vessel 10 so that the air above these levels causes the bell 1 to rise and rotate the shaft 3 which movement is transmitted to integrating mechanism 13 and, being proportional to the differential pressure provides a measure of the rate of flow. The quantity of heating medium flowing is multiplied by the difference of temperature between the flow and return pipes and integrated by the device 13 to indicate the heat supplied.
Patent GB-502785-A (GB)
Title: Improvements in or relating to shop counters
IPC: A47F3/04
Filed: 1938-09-24
Abstract: 502,785. Shop connters. OLIN, G. Sept. 24, 1938, No. 27886. Convention date, Sept. 24, 1937. [Class 116] A shop counter, divided into vertical compartments in which slidable display trays 3 are arranged one above the other has the rear wall 4 of the counter upwardly and rearwardly inclined, in order that the shop assistant may closely approach the counter top when serving a customer. In the form shown, the front wall 1 of the counter, which may be of glass, is parallel to the rear wall 4, the trays 3 being of equal lengths. According to a modification, the inclination to the vertical of the rear wall is a half that of the front wall, in order that the rear ends of the display trays may lie in a vertical plane when they are fully pulled out from the counter. The counter may be provided with vertical refrigerating elements which divide the counter space into a series of compartments.
Patent GB-159937-A (GB)
Title: Hydrocarbon burner
IPC: F23D99/00
Filed: 1919-11-11
Abstract: 159,937. Forrester, H. J. C., (Baker Steam Motor Car & Manufacturing Co.). Nov. 11. 1919. Atmospheric vapour burners; vaporizing- apparatus.-A hydrocarbon burner for motorvehicle steam-generators &c. comprises a main casing 1 divided into two vapour and air distri buting chambers 2 by a partition 3 and having its top 5 formed with burner slits 6, air inlet chambers 10 fitted with regulating-shutters 33, vapour-geperator piping 8 preferably in two branches arranged in grooves 7 in the burner top 5 and connected to an oil supply pipe 9, a vapourchamber 34 connected to main fuel nozzles 28, and a pilot burner 15 heating the vapour chamber 34. The vapour or partly vaporized fuel from the piping 8 passes through T.couplings 35 into the front end of the vapour chamber 34 and through a pipe 39, coupling 40, pipes 42, and couplings 43 to the fuel nozzles 28. The pipe 39 extends nearly to the back of the chamber 34 so that the chamber acts as a sediment trap, and the couplings 43 contain removable wire mesh rolls or cylinders to arrest any particles passing through the trap. The couplings 35, 40, vapour chamber 34, and pipe 39 are fitted with removable cleaning-plugs 36, 38, 41, 45 respectively. The fuel nozzles 28 extend into the air chamber 10 and are each in alignment with one or more air funnels 30 and flared mixing-tubes 29 leading into the chambers 2. The pilot burner 15 consists of a casing 16 fitting in a pocket 14 between the chambers 10 and carrying on an outer ledge a vapour-generating pipe 26 connected at one end to a fuel-supply pipe 27 and at the other to a nozzle 25. The vapour from the nozzle 25 mixes with air entering through a passage 19 in a mixing-tube 24 carried by a partition 17 and burns at simple apertures 22 in the top of the casing 16. The chamber 12 enclosing the fuel nozzles 25, 28 is closed by a removable door 13. In a modified construction the entrances to the chambers 10 are tubular and upturned. Specification 158,972 is referred to.
Patent GB-718359-A (GB)
Title: Process for the modification of metal-containing synthetic resins
IPC: C08G79/00
Filed: 1951-10-01
Abstract: Metal-containing synthetic resins prepared according to the parent Specification are modified by reaction, preferably with warming, with one or more aliphatic or aromatic dicarboxylic acids or their anhydrides, resin acids or higher molecular fatty acids or their polymerizable esters.  The products are suitable for lacquers. Specified modifying ingredients are adipic, succinic, sebacic, maleic, phthalic, or terephthalic acid or anhydride, colophony, soya oil fatty acid, cocoanut oil fatty acid, linseed oil fatty acid, oleic acid, stearic acid, fatty acids obtained by oxidation of paraffin mixtures or vinyl or allyl esters of the fatty acids. Preferably 1 gram mol. of modifying reactant is added per gram atom of metal in the resin.  In the examples (1) Phthalic anhydride was added to a warm resin from aluminium butylate and aceto-acetic ester. The product was soluble in butanol, benzene, butyl acetate or acetone.  (2) Linseed oil fatty acid was used in place of phthalic anhydride. (3) The modifying reactant was a mixture of fatty acids (C4-C11) obtained by oxidation of paraffin and partially converted to vinyl esters by treatment with acetylene. Specification 718,284 also is referred to.
Patent GB-310065-A (GB)
Title: Improvements relating to reinforced glass and to apparatus for use in the manufacture thereof
IPC: B32B17/10
Filed: 1927-10-21
Abstract: 310,065. Riley, G. B. Oct. 21, 1927. Scrapers.-A tool for cleaning out the grooves in the edges of compound sheets of glass and celluloid &c., before applying sealing material therein consists of a bar T adapted to slide along the edges of the glass sheets and a cutter V secured in a slot in the bar by a screw W and clamping plate X. Specification 304,630 is referred to.
Patent GB-466250-A (GB)
Title: Improved coupling systems for high frequency electric circuits
IPC: H03H2/00
Filed: 1936-10-16
Abstract: 466,250. Wireless signalling. HAZELTINE CORPORATION. Oct. 16, 1936, No. 28151. Convention date, Nov. 19, 1935. [Class 40 (v)] The input tuned circuit 36, 37, 38, 40 of a receiver is adapted to be coupled alternatively to a capacitive aerial 16 or a resistive aerial system 18, such as that described in Specification 462,872, if desired by a switch 31 as shown, in such a way that the effect on the resonant frequency of the tuned circuit is the same for each input coupling. The aerial 16 is connected to the inductance 36 through high pass filter 46, 47, while the system 18 has its unearthed terminal connected to the junction of the two series fixed condensers 37, 38 of the tuned circuit through condenser 50 and inductance 51 which is coupled to the inductance 36. Suitable value of the various reactances are given in the Specification which are preferably chosen to ensure also optimum coupling for the system 18. U.S.A. Specification 1,943,405 is referred to.
Patent GB-172789-A (GB)
Title: Improvements in metal shearing machines
IPC: B23D17/08
Filed: 1920-10-05
Abstract: 172,789. Ashton, T. R. R. Oct. 5, 1920. Shearing.-A shearing-machine has two pivoted blades moved in opposite directions by a toothed segment carried by one blade engaged by a pawl mounted on a lever pivoted on the other, and retroarade movement is prevented by another pawl. A pair of levers a, b on a common pivot c having gaps and cutters a<l>, b<l> at one or at both sides as shown are turned simultaneously in opposite directions by a pawl h, oscillated by a hand-lever pivoted to the lever b, engaging a ratchet sector a<2> on the lever a. Retrograde 'movement is prevented by a pawl i, and when both pawls are put out of action the levers a, b are returned by a hand-lever w, pivoted to. the lever a at m<l>, and a link n. Adjustable work hold-down screws g', r are carried by members secured to the lever a and frame q. Adjustable stops s support the levers a, b in their normal position.
Patent GB-956000-A (GB)
Title: Producing coarse-grained crystals from a solution by evaporative cooling
Inventor: DOMNING HANS
IPC: B01D9/00
Filed: 1960-08-15
Abstract: <PICT:0956000/C1/1> Fertilizer salt comprising coarse-grained crystals containing potassium chloride (64%), sodium chloride (34%), magnesium sulphate (1.2%) and magnesium chloride (0.7%) is produced by evaporative-cooling from 93 DEG  to 30 DEG  C. of an aqueous solution of Sylvine, rock salt and Kieserite in ten vacuum-evaporators (I, II, III . . .) connected in series for forward-flow by pipes 5, and for backward-flow by pipes 7, the evaporators being maintained under increasing vacuum.  Each evaporator has a riser-pipe 3 the top of which has a constriction 4 which produces the velocity of flow necessaryfor sorting the crystals according to size.  The conical foot 6 of each riser-pipe (except the first) is connected to the preceding evaporator by pipe 7 through which the coarser crystals, which pass down the riser-pipes in the cooler stages, are passed back to the warmer stages by means of air admitted through valve 10. Thus the coarse crystals flow through the apparatus countercurrent to the forward-flowing solution, and they are discharged into vessel 2, from which the warm feed solution is drawn up into the first evaporator.  The crystalline product is predominantly of sizes in the range 0.5 to 1.0 mm.  The cross-sections of the riser-pipes and their constrictions are dimensioned so that the velocity of flow through the constrictions decreases from stage to stage. This results in fine crystals, formed in an earlier stage, being carried along in the solution until the velocity of flow at a particular constriction is smaller than the settling-speed of the crystals whereupon the crystals move downwards in counter-current to the ascending solution.  The cooled solution is discharged from the last evaporator.
Patent GB-279505-A (GB)
Title: Improvements in regenerative ovens or furnaces
IPC: F28D17/00
Filed: 1927-10-24
Abstract: 279,505. Schmidt, H. Oct. 23, 1926, [Convention date]. Regenerators. -A reversible regenerator containing loosely packed removable filling pieces is provided with means whereby filling pieces may be introduced into the regenerator at or near its upper end and removed at or near its lower end so that the filling may be removed, cleaned and replaced or renewed by fresh filling without interrupting the working of the regenerator.
Patent GB-1280967-A (GB)
Title: Apparatus for connecting superimposed webs
IPC: B31F5/02
Filed: 1971-06-16
Abstract: 1280967 Manifolding webs MASCHINENFABRIK GOEBEL GmbH 16 June 1971 [18 June 1970] 28226/71 Heading B6A Apparatus for producing form sets for superposed webs 1, Fig. 1, comprises a first punching unit including a punching roller 2 provided with alternately disposed tools 4, 5 producing tongues 6, Fig. 2a, and holes 7, Fig. 2b, in superposed webs 8, 12, 13 in conjunction with a subjacent disc roller 2, the webs being then passed under a guide roller 9 such that the upper web 8 can be displaced relatively to the subjacent webs 12, 13 when passed over a guide roller 10 to align the tongues and holes of the upper web 8 with holes and tongues, respectively, of the subjacent webs 12, 13 the superposed webs 1 are then passed under a guide roller 11 to a second punching unit having a punching roller 14 which is provided with alternate sets of tools 16, 17 one 16 of which pushes the tongues 6 of the web 8 through the holes Fig. 5 of the subjacent webs 12, 13 whilst the other tool 17 severs the tongues 6, Fig. 4b of the subjacent webs. The superposed webs are next passed towards an adhesive dispersing device 18 in which a roller 20 applies a spot 22 of adhesive to the web 13 adjacent the tongues 7 which are then applied against the web 13 by a rotary brush 23 in association with a projection 25, Fig. 6, in a disc 24 and consolidated by a pair of calendering rollers 26, 27, to apply the tongue firmly against the lower face of web 13, Fig. 7.
Patent GB-269084-A (GB)
Title: Improvements in machines for weighing off and filling into sacks predetermined quantities of material
IPC: B65B39/08
Filed: 1926-11-10
Abstract: 269,084. Steimel, P. July 20, 1926, [Convention date]. Sack-holders.-In a machine for weighing off and filling into sacks predetermined quantities of material and provided with a packing device operated by an eccentric, the coupling of which is manually engaged, the sack shoot is pressed and held by a system of articulated levers &c. against the frame embracing the filling hopper when the coupling is engaged, and the system is secured in this position by a self-locking hand-released locking device. The sack shoot 7 rests upon rocking levers 5 supported by bell-crank levers 4, 3 secured to a shaft 41 mounted in the machine frame. A link 2 connects the arm 3 of the bellcrank lever to a starting lever 1, depression of which raises the rocking levers 5 until extensions 6 on supports of the sack shoot 7 engage rods 9<a> depending from the weighboard 9<b> of the machine. A counter-weight 39 on the shaft 41 is also raised and the weight and shoot are locked in the raised position by the engagement of an arm 40 on the shaft 41 with 'the end of a locking lever 43. In its raised position, the top of the shoot 7 is spaced from the framing 9 surrounding the mouth of the hopper 10 by points &c. 8, the space providing an outlet for the air displaced from the sack 11 during the filling operation. To release the shoot 7, a lever 46 is depressed to raise a pin 47 into engagement with the locking lever 43 to release the arm 40 and permit the weight 39 to lower the shoot.