baber/WOPTO huggingface dataset:
Patent GB-649136-A (GB)
Title: Band-pass coupling circuits
IPC: H03H11/32
Filed: 1948-01-30
Abstract: 649,136. Impedance networks. PHILCO CORPORATION. Jan. 30, 1948, No. 2835. Convention date, Jan. 30, 1947. [Class 40 (viii)] [Also in Group XL (c)] A band-pass coupling network comprises an inductance-tuned single-ended circuit with a high potential point coupled to both ends of an inductance-tuned double-sided circuit through reactances of opposite sign. As shown, the single-sided output circuit 14, 15 of an amplifier valve 10, is coupled to the doublesided input circuit 18, 19, 20 of the push-pull amplifier 11, 12 through a capacitor 25 and inductance 26. The capacitors 15, 19, 20 may be formed by the inherent output capacity of valve 10 and the input capacities of valves 11, 12, and are tuned to the mid-band frequency by variable inductances 14, 18. The midpoint of inductance 18 is ungrounded, in order to simplify tuning and balancing, and the reactors 25, 26 have equal impedances at the mid-band frequency. Damping resistors 21, 22, which are connected across the doublesided circuit, may be supplemented or replaced by a resistance connected across the output circuit 14, 15 of valve 10. In a modification, Fig. 2 (not shown), the double sided output circuit of a push-pull pair is coupled to the single sided input circuit of an amplifier. In this case, the mid-point of the inductance of the double-sided circuit is connected to the H.T. supply through a choke of such value that the inductance is substantially ungrounded at the mid-band frequency. The halves of the double-sided circuit are arranged to have the same Q, and amplitude unbalance caused by unequal capacitances in the halves of the coupling network may be compensated by an added capacitor. In an amplifier of the type having a single sided input stage followed by several push-pull stages and a single-sided output stage, unbalance caused by the coupling network between the single-sided input stage and the first push-pull stage is compensated by an opposite unbalance produced by interchanging the coupling reactances in the network between the last push-pull stage and the single-sided output stage.
Patent GB-289565-A (GB)
Title: Improvements in means for timing the valves of internal combustion engines
IPC: F01L7/02
Filed: 1927-02-01
Abstract: 289,565. Jackson, L. Mellersh-, (Porter Engine Development, Inc.). Feb. 1, 1927. Valves; regulating.-A rotary valve 5, having a recess 14 controlling inlet at 10 and exhaust at 13, is fitted with an angularly adjustable sleeve 8 having ports 40, 41 co-operating with the inlet and exhaust passages 10, 13 so that, as the sleeve 8 is adjusted, the times of closing of exhaust and of opening of inlet are varied, while the opening of exhaust and closing of inlet remain the same. The sleeve 8 may be adjusted automatically according to the opening of the mixture throttle by providing the sleeve with teeth 16, Fig. 2, engaging a rack 17 connected to a piston 18, which is subjected to the action of the suction in the intake pipe as opposed by a spring 22. The valve is fitted with a sparking-plug 32 which carries a contact 44 engaging a fixed contact 29, which is elongated to allow for variations in ignition timing. An oil-impregnated lining 9 of " genalite ", composed of bronze and graphite, is fitted between the valve 5 and the sleeve 8, and packing 38 of the same material is provided at the cylinder port 3, the packing being pressed on to the valve by a diaphragm 39.
Patent GB-720658-A (GB)
Title: Improvements in or relating to handles for mattresses and other articles
IPC: A47C31/08
Filed: 1953-02-02
Abstract: 720,658. Mattress &c. handles. BECHIK PRODUCTS, Inc. Feb. 2, 1953 [July 5, 1952], No. 2951/53. Class 52 (4). A handle for mattresses &c. comprises a  re-inforcing bar 7 secured to the inner side of the wall 5 of a mattress by grommets 3 through which pass the ends of a flexible handle 10 fitted with retaining heads 12, the handle being held against the wall 5 by a compression spring 14 between one head 12 and its associated grommet. The heads may be constructed as described in U.S.A. Specification 2,248,328. In a modification the bar 7 may be cranked inwardly.
Patent GB-289938-A (GB)
Title: Improvements relating to driving mechanism for paper-making and other machines
IPC: D21F7/02
Filed: 1927-02-02
Abstract: 289,938. White, J. Feb. 2, 1927. Driving-mechanism.-In driving mechanism for a paper-making or like machine having an expanding cone pulley 1, 2, Fig. 1, separation of the pulley portions is resisted by thrust members 24, 25 while the axial spacing is initially set by a screw 38 and hand-wheel 40 acting through a rod 31 connected to a lever 20 acting on the pins 24, 25. The drive is started or stopped by a cam 34 acting on a follower 37 on a sleeve 32 and under the control of a hand-lever 36, the driving elements returning automatically to their original position on bringing the pulley into action after stoppage. The half-pulleys 1, 2, provided with bevelled rims 3, 4, are respectively fast on the spindle 6 and unitary with a sleeve 8 feathered on the spindle 6, the half-pulley 2 being allowed to recede from the half-pulley 1 when it is desired to arrest the spinde 6 until the driving-rope 12 rests on the rim 11 of an idle-pulley 5 revoluble on the boss 10 of the half-pulley 1. In a modification for two ropes 12a, 12b, Fig. 2, a diaphragm 13 having a double-bevelled rim 14, and idle pulleys 15, 16 are mounted on the sleeve 8a on which the half-pulley 2a is freely mounted, two levers 20, 20a being connected to the control rod 31. Alternatively, the idle pulley has a double bevelled rim and rope-receiving flanges on either side, while a form of pulley having a flexible grooved transmission element interposed between the driving rope and the bevelled rims may be used. The cam 34 may be situated between two stops and adapted to move the half-pulley positively in both directions.
Patent GB-374808-A (GB)
Title: Hot bed with a plurality of feed channels
IPC: B21B43/00
Filed: 1932-02-01
Abstract: 374,808. Rolling. DEMAG AKT.-GES., Duisburg, Germany. Feb. 1, 1932, No. 3013. Convention date, Jan. 31, 1931. [Class 83 (iv).] Roller tables.-In a cooling bed having a plurality of superimposed feed channels and collecting pockets disposed adjacent thereto, the bars are removed singly from the pockets by means of a group of vertically reciprocating, lifting members connected together at their lower ends by a transverse girder and operated by chains engaging driven chain wheels. The bars are lifted from the pockets 1 by adjacently mounted, vertically movable rods 2 provided with fingers 3 and receiving grids 4, and connected together at their lower ends by a transverse girder 5. The girder has secured to it chains 13 which carry counterweights 16 and pass over chain wheels 14 mounted on a common shaft 15 driven by a motor (not shown). The girder 5 carries stop levers 6 pivotally connected at 7 to levers 8 which are joined by a plate 9 to one of the cranks 10 carried by the rods ; the cranks 10 are connected together by a rod 10a, and the lever 8 is rocked by contact with the stationary stops 11, 12, so as to rotate the rods when in the extreme positions, carrying the bars out of reach of the pockets 1. When the system is lowered the rods are deposited on the train of rollers 17.
Patent GB-1529929-A (GB)
Title: Fuel injection pump
IPC: F02M51/04
Filed: 1976-01-27
Abstract: 1529929 Fuel injection pumps ROBERT BOSCH GmbH 27 Jan 1976 [28 Jan 1975]  03014/76 Heading F1A [Also in Division F2] A fuel injection pump has a solenoid valve 25 in the suction conduit 23 extending between the suction and working chambers 22,11, the solenoid valve being energized to close the conduit 23 and de-energized to open the conduit. Thus energization of the valve prevents delivery and operation of the pump is possible in the event of failure of the electrical supply. The solenoid valve comprises a non- magnetic rod 36 secured at one end to an armature 38 and carrying at its other end a valve-member 40 with a resilient tip 49. A spring 41 urges the valvemember 40 away from a seat 48 in the conduit 23 when the valve's solenoid 42 is de-energized. The rod 36 is guided in a core 39 having a conical recess into which the conical end of the armature 38 is drawn. The fuel injection pump shown is of the kind having.a reciprocable and rotatable piston and a quantity control sleeve 28.
Patent GB-1373474-A (GB)
Title: Pour lequipement
IPC: B60S1/38
Filed: 1973-01-22
Abstract: 1373474 Windscreen wipers SOC ANON POUR L'EQUIPEMENT ELECTRIQUE DES VEHICULES SEV MARCHAL 22 Jan 1973 [20 Jan 1972] 3213/73 Heading A4F In a windscreen wiper, a blade 6 is mounted in a resilient plastics cylindrical member 8 which is rotatable within hinge members 2a, 2b at the ends of frame 2. Further hinge members 4a, 4b, 5a, 5b may be provided at the ends of rocker levers 4, 5 and more than one cylindrical member 8 may be associated with the blade 6. At the extremes of the wiper blade stroke, the blade rotates through an angle defined by the spacing between the free ends of the hinge arms 7a, 7b and shoulder portions 13a, 13b of the member 8. Each end of the cylindrical member 8 is thermally deformed to inhibit longitudinal movement of the blade 6 relative thereto.
Patent GB-1526601-A (GB)
Title: Method and apparatus for on-site connection of cables with optical fibres
IPC: G02B6/38
Filed: 1977-01-26
Abstract: 1526601 Optical fibre connectors G LE NOANE A MATHERN and G MORIZUR 26 Jan 1977 [31 March 1976] 03241/77 Heading G2J Two cables, each comprising a plurality of individual optical fibres held in a respective longitudinal grooves on the external surface of the cable core are joined by the following method:- (See Figs. 4 and 11). (i) Nut 111 (threaded at 111a), internally coned sleeve 112, cylindrical sheath 113, and hollow former 114 are passed over one cable end. (ii) Cable sheath 106 is stripped and the individual optical fibres 5 are held splayed out on the surface of former 114 (e.g. by tape). (iii) Cable core 3 is cut and counterbored at 103a, the spigot 121a of component 121 being adhered therein. (iv) The fibres 5 are released from former 114 and each is laid and adhered in a respective longitudinal groove in body 121c-121d of member 121. (v) Hemispherical shells 122-122' are fitted to cover the exposed fibres at region 121b and rigidly secure member 121 to the cable, and cylindrical sleeve 113 is slid thereover and glued. (vi) the end 121d of member 121 and the projecting fibre ends 5 are cut off and (if required) polished. (vii) The end of the other cable is prepared in the same manner except that components 212, 213, 214, 215, 216, 216c, 217, 222, 222' are passed over the end in the first step, and member 221 is used in the third step. (viii) The prepared ends of members 121, 221 are contacted together and held in angular alignment by keys 23, 23'. (ix) Shells 24, 24' are placed over members 121, 221, and as held by engagement with internal cones in members 112, 212 as the latter are moved axially together. Nut 111 is screwed on to member 212 to secure the joint. (x) Plug 215 is tightened to urge piston 217 and hence sheath 213 leftwards. As sheath 213 is stuck to shells 222-222' the contact faces of members 212-222 are urged together. Lubricant may be introduced via duct. In making the connector the components 212-222 may be made as a common part which is subsequently sawn in two. Likewise the shell members may be made by diametral sawing of cylinder like components.
Patent GB-444359-A (GB)
Title: Improvements relating to change speed mechanisms particularly for motor vehicles
IPC: F16H63/30
Filed: 1935-02-01
Abstract: 444,359. Controlling change speed and reversing gearing. VAUXHALL MOTORS, Ltd., Kimpton Road, Luton, Bedfordshire. Feb. 1, 1935, No. 3274. Convention date, Feb. 14, 1934. [Class 80 (ii)] In change-speed gearing of a kind comprising a first changespeed gear A, Fig. 1, in series with a second and synchromesh change - speed gear B, reverse is obtained by a supplementary manipulation, such as raising a control lever 6, and then moving the lever 6 to a position for obtaining a forward speed, such as firstspeed. In the gearing of this kind shown, the two gear arrangements A and B have a common countershaft 4, and a loose gear 1 can be clutched either to the clutch shaft 2, or to the tail shaft 3, or to both. A clutch gear 32 is moved to change speed in the gearing A by sliding a bar 10 and this is done by moving the lever 6 transversely as shown in Fig. 2, the lever 6 engaging a cranked lever 12, 11 for the purpose. This is movement of the lever 6 in the transverse slot 7<1> Fig. 5, in the H gate 7. Provided a pinion 14, Fig. 1, is clutched to the countershaft 4, two different speeds are effected in the gearing B when a double synchromesh clutch C is moved one way or the other by sliding a bar 8, Fig. 4. The bar 8 carries for this purpose an upstanding fork 9, which straddles the lever 6 so that speed is changed in the gearing B by moving the lever 6 in either of the longitudinal slots 7<2>, Fig. 5, in the gate 7. According to the invention, the lever 6 is first raised to unclutch the pinion 14, Fig. 1, and is then moved to first speed position, that is so as to clutch a wheel 13 to the shaft 3. A gear clutch 15 when slid to the left frees the pinion 14 and engages one of a pair of reverse idlers 20, 19, Fig. 2. This clutch 15 is moved by a fork 16, Fig. 4, which slides on a guide 22 and is connected by a lever 27 to a fork 23 adjacent the lever 6. When the lever 6 is pulled upwards against a spring 24, a lug 26 upon it passes through a retaining guide 28 into engagement with the fork 23. When the lever 6 is then moved to first speed position, the gear clutch 15, Fig. 1, is slid left as the clutch C is slid right, so bringing in reverse. Changing in the gearing A may be facilitated after the engine clutch 37 is opened and the throttle closed by applying a brake 36 automatically to the clutch shaft 2 by engine suction. When the changing bar 10 moves so as to connect lower and upper ports 45, 46, Fig. 3, by a duct 44 in the bar, suction rendered operative in a chamber 40 pulls down a lever 43 so as to apply the brake 36 momentarily. The bars 8, 10 are interlocked as shown in Fig. 2. Specification 403,422 is referred to.
Patent GB-583184-A (GB)
Title: Improvements in means for the insertion of intra-vaginal packs
IPC: A61F13/26
Filed: 1944-02-23
Abstract: 583,184. Tampon introducers. POPPER, O. Feb. 23, 1944, No. 3378. Convention date, March 13, 1943. [Class 81 (ii)] An applicator for the insertion of intra-vaginal packs comprises a tubular casing 10, its forward portion 11 containing a tampon 12 whose displacement is effected by a push rod 13 which contacts therewith at its forward end 14. A flat fin-like tongue 15 extends from the rear end of the push rod and protrudes through a slot 16 extending longitudinally in the casing. The push-rod and fin are produced integrally from a strip of sheet material, e.g., paper or thin cardboard by folding as illustrated in Fig. 6. This complete unit is then assembled within the casing 10 by pushing the flattened form through the slot 16. The leaves 24, 25, constituting the portion 23 of the tongue 15, remain outside the slot and are folded back against the external surface of the casing. Specification 530,318 is referred to.
Patent GB-555918-A (GB)
Title: Improvements in electronic valves and capping arrangements therefor
IPC: H01J5/54
Filed: 1942-03-16
Abstract: 555,918. Thermionic valve caps. ERBER, B. March 16, 1942, No. 3451. [Class 38 (i)]  In order to avoid the necessity of threading the lead-in wires through holes in the cap when attaching them to the contact pins, slots 3 are formed in the sides and end of the cap extending from the periphery to the apertures in which the pins 4 are mounted. The wires can thus be laid in the slots and soldered to the root of the pins or laid in slots S in the pins. The slots 3 may be replaced over part or all their length by shallow grooves in which the wires are received. To strengthen the cap, an outer sleeve of metal or insulation or one or more rings may be affixed to the cap by cement, screwing &c.
Patent GB-555816-A (GB)
Title: An improved holder for reels of adhesive tape
IPC: B65H16/04
Filed: 1942-03-16
Abstract: 555,816. Holders for adhesive tape DOMINION DAIRY CO., Ltd., and DESBOROUGH, P. C. L. March 16, 1942, No. 3455. [Class 18] A holder for adhesive tape, e.g. for sealing tins comprises  a column 10 supporting on its end 12 a reel 11 of adhesive tape, the portion 12 being of less height than the thickness of the reel. A plate 14 is resiliently pressed on to the reel by a thumb-nut 16. A severing blade may be provided on the apparatus.
Patent GB-1070942-A (GB)
Title: Improvements relating to phenyl tin compounds
Inventor: OAKES VINCENT
IPC: C07F7/22
Filed: 1964-01-28
Abstract: PhSnX3, wherein X is halogen is reacted with a phenyl alkali metal compound to give Ph4Sn, which is then reacted with SnX4 to give Ph3SnX and PhSnX3, the PhSnX3 being recycled.  Example 1 describes the preparation of Ph4Sn by reacting Na with chlorobenzene, under N2, in petroleum ether, adding RhSnCl3 thereto and filtering off the Ph4Sn.  Examples 1 and 3 describe the reaction of the Ph4Sn and SnX4 by heating them together under reduced pressure, e.g. 10 mm., at 120 DEG  c. to distil off PhSnX3 and leaving a residue of Ph3SnX. Alternatively, the Ph4Sn and SnX4, may be heated together in a solvent, e.g. dibutyl ether, benzene, petroleum ether, from which Ph3SnX ppts. on cooling.  Product Ph3SnCl may be hdrolysed with NaOH to form to the oxide and then reacted with CH3COOH to form the acetate.
Patent GB-265964-A (GB)
Title: Manufacture of vat-dyestuffs
IPC: C09B57/12
Filed: 1927-02-08
Abstract: 265,964. I. G. Farbenindustrie Akt.- Ges. Feb. 9, 1926, [Convention date]. Addition to 237,294 and 265,232. Naphthalene, dyes derived from. - The dyestuffs obtained according to the parent Specification by condensing naphthalene-1 : 4 : 5 : 8- tetracarboxylic acid or its anhydride with an odiamine are also obtained by heating, either dry or in a solvent of high boiling point, the primary condensation products which can be obtained by condensing the acid or its anhydride with an odiamine in a solvent of low boiling point such as - alcohol. According to an example, the acid is - condensed with o-phenylenediamine in boiling alcohol and the product further condensed by boiling with glacial acetic acid or by heating alone to 150‹ C.
Patent GB-362232-A (GB)
Title: Improvements relating to recording sound on discs
IPC: G11B3/36
Filed: 1931-02-04
Abstract: 362,232. Recording sound on discs. KATSCHER, S., 9, Muhlgasse, Vienna. Feb. 4, 1931, No. 3580. [Class 40 (ii).] In recording sound on disc records by means of a sound-box traversed by a radial screw extending through a tubular casing constituting the guide for the sound-box, the casing is supported wholly at its outer end and extends over the turntable. As shown, the feed screw e extends through a radially arranged casing h supported at its outer end only from the machine frame, and the screw is driven by a cord and pulley d from the motor driving the turntable. The sound-box f is supported on a pivot n carried by arms m on a sleeve l embracing the casing h, and a two-armed lever t, p on the pivot n is provided on the arm p with a nut member projecting through a slot k in the casing h to engage the screw e for traversing the sound-box. The arm t serves for rocking the nut member out of engagement with the screw, a spring r normally maintaining engagement then engaging a recess u, and the sound-box can then be lifted and moved outwardly. When a cutter has to be changed the sleeve is turned on the casing until a spring-pressed pin w with bevelled nose engages the slot in the casing, the pin being mounted in a barrel extending from the sleeve.
Patent GB-971040-A (GB)
Title: Improvements in or relating to tenter clip assemblies
IPC: B29C55/20
Filed: 1963-01-29
Abstract: 971,040. Tenter clip assemblies. E. I. DU PONT DE NEMOURS & CO. Jan. 29, 1963 [Feb. 1, 1962], No. 3690/63. Heading D1S. A tenter clip assembly comprises a substantially flat support member 2 having at one end an integral thickened wear block 15 adapted for sliding engagement with the inner rail of a track of a tenter frame and having extending from the other end an integral lug 8 adapted for sliding engagement with the outer rail of such track, means for mounting the support member on the, conveyer chain 3 of a tenter frame and a tenter clip 1 removably mounted on the support member and adapted to grip the edge of a web material. Fig. 1 shows an exploded view of such an assembly. The member 2 is fixed to chain 3 by pins 11 and lock plate 4, the latter engaging channels 22 in pins 11, and the clip 1 and plate 4 are secured to the member 2 by screws 5. The member 2 is made of a material especially suited for frictional wear e.g. ductile cast iron.
Patent GB-632190-A (GB)
Title: A rigid metal frame to be used for experiments in mechanics, which can be assembled or dismantled at will
IPC: G09B23/10
Filed: 1948-01-01
Abstract: 632,190. Educational appliances. ROBERTSON, D. Jan. 1, 1948, No. 37/47. [Class 146 (ii)]  A rigid rectangular experimental frame comprises horizontal and vertical members F, G and H, K and is assembled, and can be dismantled, by means of sliding joints A, B and wing screws L. As shown to demonstrate the theorems of the triangle or parallelogram of forces, a board P is held by clips Q on the members F, G, and movable pins R fit into holes bored at intervals along the member F so that the angle can be varied between cords attached to spring balances S. The lower half of the joint A or B can be used as a fulcrum with the horizontal member G to demonstrate the principles of the lever or of moments.
Patent GB-432584-A (GB)
Title: Improvements in or relating to expansion joints for concrete roads
IPC: E01C11/10
Filed: 1934-02-06
Abstract: Expansion joints for concrete roads and pavements are filled with a composition comprising granulated or comminuted cork bonded by vulcanized sponge or porous rubber.  Other fillers, e.g. wood meal, asbestos, clay and kieselguhr, may be added.  Glue or similar hydrophilic colloid may be incorporated in the material so that it has a tendency to absorb small quantities of water thereby swelling slightly and tightening the joint.  An example is given containing 100 parts by weight of rubber and 40 of ground cork (particle size 1/16 to 1/8 of an inch) together with sulphur, zinc oxide, lithopone clay, kieselguhr, palm oil, glue, spindle oil, ammonium carbonate, tar oil, antioxidant and accelerators.  Specifications 349,440, and 357,693, [Group X], are referred to in the Provisional Specification.
Patent GB-942198-A (GB)
Title: Improvements relating to the production of curved plural-layer plates and television tubes
IPC: H01J29/89
Filed: 1960-02-03
Abstract: In a method of making a uniformly coloured foil for use on the end face of a television tube, 100 kg. of polyvinyl butyral are mixed with 40 kg. of dibutyl phthalate, 9 g. of a mixture of 20% finely divided soot having a particle size of from 0.1 to 10m , 50% collodion cotton or 30% dibutyl phthalate, and 1 g of a mixture of 30% copper phthalic-acid cyanide having a particle size of from 0.1 to 10m , 44% collodion cotton or 26% dibutyl phthalate, and calendered to form a foil.