baber/WOPTO huggingface dataset:
Patent GB-230876-A (GB)
Title: Improvements in speech frequency translating systems
IPC: H03F3/02
Filed: 1923-10-08
Abstract: 230,876. Western Electric Co., Ltd., (Western Electric Co., Inc.). Oct. 8, 1923. Matching mechanical impedances.-A loudspeaking instrument is designed so that the mechanical impedance of the diaphragm and associates parts is accurately matched with that of the horn for the purpose of improving the transmission-frequency characteristic and eliminating distortion. In particular, the dimensions of the air chamber located between the vibrating diaphragm and the input end of the loud speaker horn is so adjusted that the opposition to mechanical vibratory energy flow, or mechanical impedance, due to the combined effect of the mass of the vibrating member and the elasticity of the air in the chamber is of the same order of magnitude as the opposition to mechanical energy now of the air in the horn. The elements of the combined receiver and horn are analysed into inertia, elasticity, and resistance factors, and a mathematical investigation is made into the parts these play in a mechanical transmission line, analogy being made with an equivalent electric line or network of the type comprising inductance in series and capacity in shunt, particularly where such a system is terminated in midseries or mid-shunt. For instance the mechanical elements of the loud speaker shown in Fig. 12 are considered as equivalent to the electric network of Fig. 13. The series inductance 76 corresponds to the mass of the pivoted armature 73, the shunt capacity 77 to the elasticity of the reed 86, the series inductance 78 to the mass of the plunger or diaphragm 72, the shunt capacity 79 to the elasticity of an air-chamber 75 formed between the. plunger and the small end of the horn, and the resistance 80 to the mechanical impedance of the horn 74, which is assumed to be that of a uniform tube of infinite length and therefore unvarying with frequency. By making the vibratory mass of the armature 73 half that of the plunger 72, and the elasticitv of the reed 86 half that of the air chamber 75. the mechanical line is terminated at mid-series at one end, and at mid-shunt at the other, and is coupled to the horn, which has an impedance equal to that of an infinite number of full sections such as 76, 77, and 78, 79, Fig. 13. Particulars are given in the Specification of the manner in which the dimensions of the plunger, air chamber, and reed, and the coupling of the latter to the armature, are determined. Instead of being free, the edges of the plunger or diaphragm may be rigidly supported, an extra factor of elasticity being thereby imparted to the diaphragm, or the latter may be of larger diameter than the small end of the horn, thereby introducing a step-up transformer effect.
Patent GB-1146786-A (GB)
Title: Gripper device for a sheet feeder of a printing press
IPC: B65H5/14
Filed: 1967-05-31
Abstract: 1,146,786. Printing-machines. ROLAND OFFSETMASCHINENFABRIK FABER & SCHLEICHER A.G. 31 May, 1967 [1 June, 1966], No. 25061/67. Heading B6C. Gripper mechanism.-For transferring a sheet 3, Figs.. 1. and 4, from the impression cylinder 2 of a rotary multi-colour printing-machine to a further, printing couple (or from a feed table to the impression cylinder or from the impression cylinder to a stack), gripper mechanism comprises a carriage 5 moving on chains 13. driven by a sprocket 15, Figs. 4 and 15, on a hollow shaft 20; the carriage supporting a gripper shaft 28 having a plurality of grippers 4, gripper rests 33 on a vertically slidable support bar 36; and a slidable rod 16, Figs. 1, 4, 5. and 15,. which in its leftward position in Figs. 5 and 15 locks the bar 36 in position and in its rightward position releases the bar and moves a stop 45 into position to limit the dosing movement of the shaft 28, which is otherwise limited by an. adjustable stop 51, the grippers being urged counterclockwise about the shaft by a spring 32 against stops 31 on the shaft. The rod 16 is moved to the right against a spring by a cam 98 when a magnet 105 is energized, through a dog 79 which engages a lever 18 when the carriage 5 is in the transfer zone. When. the first sheet of a given paper gauge is to be transferred, the carriage approaches the zone with the grippers open, the dog engages the lever, the magnet is energized and the bar 36 is released, moving to its upper position by spring action. The grippers are then closed to clamp the sheet between themselves and the rests 33 and to depress the rests and bar 36 until a member 46 abuts the now active stop 45. When the rod 16 moves to the left, either by a spring 94 acting on a bar 91 acting: on the lever 18 or by disengagement of the dog from the lever, the bar 36 is clamped in position and the stop 45 is released, while the grippers are opened to release the sheet. When the next sheet is gripped, the movement of the shaft is limited by the stop 51, which permits slightly more rotation than the stop 45, while the movement of the grippers is limited by the now fixed rests 33 and the sheet, the extra movement of the shaft causing the stops 31 to disengage the grippers so that gripping pressure is produced by the spring 32. The clamped position of the rests is dependent on the thickness of the sheets.
Patent GB-447012-A (GB)
Title: Improvements in and relating to locks
IPC: E05B63/12
Filed: 1935-09-09
Abstract: 447,012. Locks. CLAYTON, C. E. EVERY-, 51, Chancery Lane, London.- (Segal Lock & Hardware Co., Inc. ; 261, Broadway, New York, U.S.A.) Sept. 9, 1935, No. 25084. [Class 44] A lock comprises a casing 10 provided with two or more slots 11 to receive two or more loops 12 on the keeper 13. Two or more bolts 14 carried by a sliding plate 15 are projected across the slots and through the loops when the plate 15 is moved vertically in guides 17 by a crank 27 operated by a knob 26 or by a crank 28 operated by a key cylinder 24. A tumbler 32 pivoted on the plate 15 at 31 engages a fixed lug 21 on the casing 10 in the two extreme positions of the plate and prevents the lock being forced. It is disengaged from the lug during the actuation of the plate 15 by the crank 27 or 28 engaging a lug 35 thereon. The plate is actuated by the cranks engaging arms 30 on the plate. A chain 46 may be combined with the lock, one end being connected to the buffer while the other end carries a head 36 sliding in a guide 37 on the lock casing. The head may be moved out of the guide by a pin 39 adapted to be actuated by the key crank 28 through lever 42 and link 40 when the key is turned to open the lock.
Patent GB-318860-A (GB)
Title: Improvements in or relating to high frequency transmitters and receivers
IPC: H03B5/34
Filed: 1929-08-16
Abstract: 318,860. Telefunken Ges. f³r Drahtlose Telegraphie. Sept. 10, 1928, [Convention date]. Thermionic generators and heterodyne receivers. -A high - frequency transmitter or receiver particularly adapted for short waves comprises a crystal-controlled oscillation generator QO modulated at M by an auxiliary generator AO of comparatively low frequency. One of the resulting side frequencies is selected by a filter F and is used either for transmission or as the local oscillation in heterodyne reception. Adjustment of the resulting frequency is effected by varying the frequency of the auxiliary generator AO. Valve circuits (Fig. 2, not shown) are described for carrying out the invention.
Patent GB-462540-A (GB)
Title: Improvements in or relating to the manufacture of filter plugs or wads for cigarettes
IPC: A24D3/02
Filed: 1935-09-10
Abstract: 462,540. Cigarette-making machines. RUAU, F. F., and MOLINS MACHINE CO., Ltd. Sept. 10, 1935, Nos. 25132/35 and 6191/36. [Class 130] In a machine for forming filter plugs, wad material in strip form is moved lengthwise and simultaneously folded and/or compressed and delivered to a forwarding conveyer which moves the wad material together with wrapping material through mechanism which folds and secures the wrapping material about.the wad material. Strips cut from wad material comprising superimposed layers of crepe paper with or without interposed layers of absorbent material are fed lengthwise in succession to a belt 104 and the rear portion of each strip is maintained in a flat condition by a foot 109. The belt passes under knurled feeding rollers 105, 106 and the edges of the strips are bent by guides 107 and compressed by an arcuate tapering tongue piece 111 and rollers 112, 113 to a cross-section which is smaller than that of the final product to destroy some of the natural resiliency of the material. The middle portions of the strips are prevented from rising by a finger 108 passing through the tongue piece III and through a groove in the roller 106. The compressed strips are delivered between guides 114 on to wrapping material 116 and carried by a conveyer belt 118 through folding, pasting and sealing mechanisms which form a rod of wad material. The rod is cut by a knife 141 and the severed lengths are spaced by bands 161, 162 which move faster than the rod and the lengths, which contain the two end portions of successive strips, are deflected into a row on one part of a belt 166 by a van 163 on a drum 165 while the remaining lengths are deflected by vanes 163 on a drum 164. The mechanism for cutting and feeding the strips to the conveyer belt 104 is described in Specification 462,585. According to the Provisional Specifications the wad material may be compressed and wrapped in the paper strip simultaneously. Specification 421,551 also is referred to.
Patent GB-1147144-A (GB)
Title: Reactor device
IPC: G21C3/33
Filed: 1966-06-06
Abstract: 1,147,144. Fuel elements. -GENERAL ELECTRIC CO. 6 June, 1966 [7 June, 1965], No. 25132/66. Heading G6C. A combined spring and stop assembly for fitting to a corner of a nuclear reactor fuel bundle to bias the fuel bundle away from adjacent fuel bundles of a group comprises a stop assembly 152 having a pair of mutually perpendicular elongate faces 154, 156 with outwardly extending stops 94, 96 respectively, and a spring assembly 132 having spring members 86, 93 spaced from and extending along the faces 154, 156. The spring member 86 includes a knee 142, and the spring member 93 includes a flat section 148 and extends downwardly a greater distance than the member 86. The length of the spring member 93 is such that the knee 142 of spring member 86 will always remain in facial contact with the flat section 148 of the next adjacent spring assembly. The faces 154, 156 have openings 162, 164 respectively which receive the ends of the spring members 86, 93 to provide unimpeded spring travel throughout maximum possible spring deflection. Spring and stop assemblies constructed as described above are particularly suitable for use with boiling water reactors. In one such reactor (Fig. 1, not shown), the top grid structure of the core comprises two mutually perpendicular sets of cross-members which serve to define a plurality of cubicles extending through the core. Four fuel bundles occupy the four corners of each cubicle, the lower ends of the bundles being supported in four sockets formed in the upper end of a control rod guide tube. A cruciform control rod 26 may be moved into the space between the fuel bundles. The stops 94, 96 ensure that the fuel bundles, such as bundles 75, 78 shown in Fig. 4, never move closer than the width of the blades of the control rod 26. The control rods 26 are slidably mounted in guide tubes extending through a chamber beneath the reactor core and are connected by actuating rods to drive mechanisms. Each actuating rod is sealed and slidably mounted at the lower end of the reactor pressure vessel and the upper end of each control rod guide tube is supported by the bottom grid structure of the core.
Patent GB-1504416-A (GB)
Title: Mosaic needle printer heads
IPC: B41J2/26
Filed: 1975-06-12
Abstract: 1504416 Selective printing SIEMENS AG 12 June 1975 [14 Aug 1974] 25145/75 Heading B6F A print needle 1 is held in a blind bore 2 in a plunger armature 3 by elastic deformation either of the end of the needle itself or of a separate means provided in the bore. As shown, the needle 1 is distorted at its end and grips the side of the bore 2 when pressed therein. In modifications, a helical spring may surround the end of the needle, the tip of which is bent to prevent it from escaping, or a spring collar may surround the end of the needle.
Patent GB-670675-A (GB)
Title: Improvements relating to internal combustion engines with pre-combustion chambers
IPC: F02B23/04
Filed: 1949-09-30
Abstract: 670,675. Combustion chambers. DAIMLER-BENZ.AKT.-GES. Sept. 30,1949 [Oct. 1, 1948], No. 25164/49. Class 7(iii) A direct-injection engine has a main combustion space 3 . formed in the piston and a pre-combustion chamber 8 the outlet 10 of which is approximately perpendicular to the bottom of the combustion space 3, the outlet 10 being formed by an insert 11 which projects into the space 3 so that at top dead-centre the combustion products escape from the chamber 8 through a narrow annular passage 12. The space 3 is shaped so that it can be produced by a milling tool rotating about the axis x-x, .and the axis of the opening 10 preferably passes through the centre of gravity of the space 3. Reference has been directed by the Comptroller to Specfication 663,313.
Patent GB-251842-A (GB)
Abstract: 251,842. Arcus, J. S., and Beaubien, R. E. Sept. 23, 1925. Tickets, issuing.-In a machine for issuing strip tickets of varying lengths, a number of keys 1 - - 5 are provided and the actuation of a selected key feeds out of the machine a corresponding length of ticket, and cuts it off, and the parts are thereupon returned automatically to initial position. Full-stroke and interlocking devices, and ticket counters are provided. The bars of the keys 1 - - 5 are adapted to engage a feed lever 18 pivoted at a point 50 so that the angular movement of the lever depends upon the key depressed. A link 19 connects the lever with a toothed cam-sector 20 meshing with a pinion 21 on a spindle carrying a pawl which engages ratchet teeth on a flange of a feeding reel 11. Pins on the feeding reel engage perforations in the ticket strip, and the arrangement of the toothed members 20, 21 is such that after the end of the ticket has been pushed under the spring-pressed outlet flap 8, the speed of delivery of the ticket is increased. The reel 11 is locked until a key is actuated by a pin 25, Fig. 8, on the sector 20 engaging a cam-shaped flange upon it, and it is locked during the cutting operation by a sliding bolt 63 actuated by the cutter-operating lever 32. Full-stroke mechanism and key locks. Each key bar has an extension 82 provided with rack teeth which co-operate with a pivoted spring- pressed detent 28, Fig. 12, to ensure that the keys shall make full strokes in each direction. The keys are locked during the cutting operation by a spring-pressed latch 48 which engages the detent 28, and is actuated by a shaft 45. An arm 44, Fig. 7, on this shaft is rocked by a toe 43 on the cutter carrier 39. A crowding lock comprising endwise sliding bolts 16 is provided to prevent the simultaneous actuation of two or more keys. Tickets, cutting-off. - The cutter actuating lever 32 is pivoted at 50 and has a pivoted extension 58 which is restrained by a spring 60. The parts 32, 58 are engaged by pins on the bars of the keys 1 - - 5. and the movement is transmitted by a link 33, Fig. 8, to a two-armed lever 55 which winds up two springs 40, 56. The spring 40 tends to rock a shaft 41 upon which the carrier 39 for the knife 116 is mounted. The cairier is locked by a latch 37 until the end of the strip feeding movement, when the lever 32 rocks an arm 34, and releases the latch through a link 36. The cutter then snaps over under the action of the spring 40. The cutter lever 32 is locked, by a latch 51 until the feed lever 18 has been retracted by its spring 49, when the spring 56 becomes operative and retracts the cutter lever and the cutter. The return of the cutter lever is assisted by the spring 60, and its final movement helps to return the keys 1 - - 5. The link 58 is bent and arranged to slide on the base of the machine to prevent sagging. Registering number of tickets. - Separate counters 74 are arranged to be actuated by the bars 82 of the keys 1 - - 5, and a grand totar counter 72 is driven by a pinion 70, Fig. 7, engaging with teeth 71 formed in the plate 11 of the feeding reel.
Patent GB-660983-A (GB)
Title: Improvements in or relating to method of and means for forming filamentary articles
IPC: D01D5/06
Filed: 1947-09-17
Abstract: <PICT:0660983/IV (a)/1> Filaments, e.g. of artificial resin and rubber, are obtained by discharging under pressure a continuous stream of a solidifiable filament forming liquid into the centre of a viscously-flowing supporting and confining liquid stream whose central portion moves in the same direction, and at substantially the same speed as the solidifiable liquid, and continuing the joint movement of the streams until solidification of the filament stream is effected. In an example, rubber latex is supplied from container 34 through a siphon 36 and hose 38.  Container 34 may be suspended by a spring 41 so arranged that a constant head of latex is provided. The latex is extruded through nozzle 16 into the centre of tube 10 through which heated glycerine 40 flows viscously.  The solidifying latex thread 42 and the glycerine pass together without substantial relative movement until the solidified thread leaves the tube and passes over roller 44 and the glycerine is discharged into sump 28 from whence it is dehydrated and pumped up to reservoir 22.
Patent GB-767417-A (GB)
Title: Improvements in or relating to a process for the polymerisation of ethylenically unsaturated compounds
Inventor: COLLINSON ROY GLADWIN
IPC: C08F4/12
Filed: 1954-09-01
Abstract: One or more ethylenically unsaturated monomers are polymerized, e.g. in bulk, solution, or aqueous emulsion or suspension, in the presence of a silver alkyl initiator and in the absence of oxygen. The silver alkyl, e.g. silver ethyl, is preferably prepared in situ, e.g. by reacting lead tetra-alkyl with silver nitrate in the presence of a solvent for the reactants such as methanol. Monomers mentioned are vinyl chloride, vinyl acetate, ethylene, propylene, acrylonitrile, and methyl methacrylate, and mixtures of ethylene, propylene or vinyl acetate with vinyl chloride.  In aqueous emulsion the emulsifying agent may be polyethylene glycol mono-oleate, the disodium salt of methylene di-naphthalene sulphonic acid, whilst in aqueous suspension, the suspending agent may be polyvinyl alcohol.  Specified solvents for solution polymerization are xylene, cyclohexanone, and acetone.  The polymerization may be effected at temperatures as low as - 40 DEG  C.
Patent GB-874885-A (GB)
Title: Improvements relating to the production of cap closures
IPC: B65B7/01
Filed: 1959-07-24
Abstract: 874,885. Making cap closure bands; expanding rings. WALLIS TIN STAMPING CO. Ltd., and GINZLER, G. E. April 28, 1960 [July 24, 1959], No. 25517/59. Classes 83 (2) and 83 (4). A method of making cap closures for glass jars, of the kind in which a cap is held on the container by a separate fastening band having its ends respectively formed with a tongue and with a slot which are engageable with one another to convert the band into a ring which embraces the cap, includes the step of radially expanding a curled fastening band, by relative movement between it and a tapered mandrel, until the slot at one end is engaged by the tongue at the other, the band being thereby converted into a circular ring for receiving the cap. A table 2 rotatable on a base 1 has a series of holes each containing a freely rotatable annulus 3 intended to receive a curled band S. The table 2 is turned intermittently to bring the annuli 3 successively into alignment with a circular bolster plate 5 in the base 1. The plate 5 has deep webs 6 radiating from the centre and slidably accommodates a radially slotted plunger 7 urged upwardly by a spring 8. Above the plate 5 a vertical hollow mandrel 12, having a frusto-conical head 14 radially slotted at 15, is suspended from a plate 11, which also carries components in other parts of the machine, and is urged downwardly by a spring 16. A rod 24 passing through the mandrel 12 is formed at its lower end with a radially spoked grid 25, the spokes of which are slidable in the slots 15. In operation, the mandrel 12 is moved down to expand the band S so that a slot R is engaged by a tongue P. The mandrel 12 is then raised, the grid 25 serving to strip the band S therefrom. The table 2 is then turned to move the formed band S to a position where it receives a cap disc C and has its upper end formed with a flange F.
Patent GB-1435940-A (GB)
Title: Method and apparatus for conveying a strand through a continuous casting installation
IPC: B22D11/12
Filed: 1973-05-29
Abstract: 1435940 Continuous casting SCHLOEMANN AG 29 May 1973 [29 May 1972] 25611/73 Heading B3F [Also in Division B8] Linear electromagnetic fields which travel in the direction of the casting path parallel to and at opposite sides of a strand guide means 2, 3 are generated to cause such fields to interact with secondary, induced fields to produce forces which act upon the strand (the dummy bar 7 or 31, 32 together with the cast strand or the cast strand alone) and tend to move the strand. In Fig. 1, the strand or the short dummy bar 7 forms the secondary of a linear motor, and windings 4 which are arranged down the side of the strand path act as the primary. The latter are cooled by water spray and are adjustable for spacing from the strand. To hold the dummy bar head 5 in the mould 1, members 6 in the region of a guiding plate arrangement 2 adjacent the mould can be displaced towards the bar 7. In Fig. 3, the windings 34 forming the primary are secured to the sides of a short dummy bar 31 which has a head 32 for closing a mould 33 and, as the secondary, rails 37, 38 are mounted in the guide means for spatial adjustment with regard to the primary. If conveying the dummy bar up into the mould, forces are generated acting oppositely to the direction of strand withdrawal. Braking may be applied in the same manner.
Patent GB-374719-A (GB)
Title: Improvements in or relating to sachets for use in the permanent waving of hair
IPC: A45D7/04
Filed: 1931-09-12
Abstract: 374,719. Hair-waving appliances. WHITEHEAD, A. H., 9, Cannon Passage; Cannon Street, Birmingham. Sept. 12, 1931, No. 25620. [Class 131.] In a sachet for use in permanent hair waving, the pocket or wrapper adapted to contain the usual absorbent pad is provided with a plurality of slits in the side which is to lie in contact with the tress, the slits allowing the ready escape of the steam or vapour evolved from the solution or lotion applied to the pad. As shown, the sachet comprises a sheet of paper 5 the bottom portion of which is folded upwards along the line 5a to enclose a sheet 6 of waterproof material, the sheet being provided with an extension folded on the lines 5b, 5c to form a pocket 5d for a pad 7 of lint or other absorbent material, the part of the pocket which is wrapped around and in contact, with the tress when the sachet is in use, being provided with a number of parallel slits 5e. The parts are secured in position by a line of stitching 8. The sachet is wound round the tress in the form of a cylinder with its axis normal to the line 5a.