baber/WOPTO huggingface dataset:
Patent GB-555942-A (GB)
Title: Improvements in or relating to thermionic feedback amplifiers
IPC: H03G3/08
Filed: 1942-03-10
Abstract: 555,942. Valve amplifying circuits. STANDARD TELEPHONES & CABLES, Ltd., ROCHE, A. H., and KIDNER, H. G. March 10, 1942, No. 3131. [Classes 40 (iii) and 40 (v)] In a multi-stage negative feedback thermionic amplifier an overall feedback path is provided and a local feedback path embracing any number of stages excluding the first stage but including the last stage. The gain of the amplifier is controlled by varying the loss in the overall feedback path # and simultaneously by varying the gain Á in the forward path as by controlling the local feedback in such a manner that the propagation round the overall feedback loop Á# remains constant. The Figure shows the overall feedback path conjugately connected between an input hybrid coil T1 and a balanced output hybrid coil T2 and comprising impedance changing network R9, R10, R11, the gain control attenuator GA and a fixed network R12, R13, R14 and C7, C9. The local feedback comprises resistance R15 adjustably shunted by condenser C5 by a control mechanically coupled to the attenuator GA. The attenuator GA comprises a variable bridged T network of resistances R25, R26, R27, R37 and a condenser C11 to control the phase shift at high frequencies. The Specification gives a detailed construction using four ganged ten point switches, Fig. 3 (not shown).
Patent GB-304042-A (GB)
Title: Improvements relating to domestic ranges
IPC: F24B1/182
Filed: 1928-02-01
Abstract: 304,042. Smith & Sons, Ltd., S., and Smith, S. Feb. 1, 1928. Combined open fireplaces and cooking-stoves; dampers; grates. - A cooking-range comprises a grate 1, a boiler 13, a plurality of ovens 2, 3 above the grate, a boiler flue or flues 32, and oven flues 33, 35 extending up the sides of the grate, which, together with the boiler flues, discharge beneath the ovens. The stove shown comprises two ovens, one on each side of the centre-line of the stove. Gases passing up the left-hand flue 33 are, discharged beneath the oven 2 and are caused bv a partition 27 in the. oven bottom flue to traverse the bottom, outer side, and top oven flues to the outlet. Gases passing beneath the boiler to the flue 32 are also discharged beneath the oven 2 and are caused by the partition 27 to pass to the flue 4 between the ovens. Gases passing up the right-hand oven and boiler flues are similarly directed around the oven 3. Connected pivoted dampers 42 control the boiler flues, and are operated by a rod 45 pivoted to an arm carried by the rotatable rod 43 which connects them. An angle member 48 on the rod 43 limits the movement. Dampers 49, 50 controlling the oven flues 33, 35, are separately operated by similar means. A damper 58 controls the passage of the gases direct to the chimney flue. The side cheeks of the grate are formed by L-shaped blocks 36, 37 secured to the sides of the stove by hooks 36<a>, 37a engaging holes in the latter, short flue 38, 39 leading to the flues 33, 35 being formed beneath the cheeks.
Patent GB-1497874-A (GB)
Title: Reaction products of 4,4-bis-(hydroxymethyl)-cyclohexene compounds
IPC: C08L81/00
Filed: 1975-01-24
Abstract: 1497874 Sulphur containing derivatives of bis(hydroxymethyl)cyclohexenes and their use as reinforcing additives in elastomers DEUTSCHE GOLDUND SILBER-SCHEIDEANSTALT 24 Jan 1975 [22 April 1974] 3155/75 Heading C2C [Also in Division C3] The invention comprises sulphur containing derivatives of 4,4 - bis(hydroxymethyl)cyclohexenes which are the reaction products of 4,4 - bis(hydroxymethyl)cyclohexenes of Formula I where R<SP>1</SP>, R<SP>2</SP> and R<SP>4</SP> are independently H 1 CH 3  or phenyl, X represents -CH 2 - or -(CH 2 ) 2 - and R 3  and R 5 , which are only present when X is absent, are independently H 1 CH 3  or phenyl with sulphur, which are mono- or polysulphides formed by addition of the sulphur to the double bond of the cyclohexene ring. The reaction products have application as reinforcing additives in cross linkable elastomer mixtures containing light fillers.
Patent GB-672540-A (GB)
Title: Improvements in punching or similar machines
Inventor: JACKSON ARTHUR NEWTON
IPC: B21D28/00
Filed: 1950-02-08
Abstract: 672,540. Metal - working presses. DE BERGUE MACHINE TOOLS, Ltd. Feb. 6, 1951 [Feb. 8, 1950], No. 3213/50. Class 83 (iv). In a punching &c. machine an oscillating lever C reciprocates a ram B actuating through a pivoted gag D and a lifting-pin H a punch slide A. The pin H is locked in the withdrawn position by a spring bolt P and is released on a working stroke by an adjustable stop V to reengage the pin H in a slot L in the ram B. The slide is pivoted to a two-armed lever E carrying a mass G adjustable to the positions shown. When the mass is in the dotted position the slide is underbalanced and reciprocates idly until the gag is engaged. When the mass G is in the full line position the slide is fully balanced and remains stationary in its upper position.
Patent GB-992173-A (GB)
Title: Improvements relating to hydraulically operated mine roof supports
Inventor: SALT GEOFFREY EDMUND
IPC: E21D15/51
Filed: 1963-01-26
Abstract: 992,173. Telescopic pit props. FLETCHER & STEWART Ltd. April 24, 1964 [Jan. 26, 1963], No. 3331/63. Heading E1E.   The base of a telescopic hydraulic prop 12 is supported on a U-shaped pin 13 passing through a set of four slots 14 at a selected level in an extension member 10 which fits slidably within the base, two or more sets of slots 14 being provided. The U-shaped pin may be replaced by two separate pins.
Patent GB-139863-A (GB)
Title: Improvements in and relating to vehicle tyres
IPC: B60C7/16
Filed: 1919-02-11
Abstract: 139,863. Prince, J. A., and Gilles, A. L. Feb. 11, 1919. Metallic spring bodies and cores.-In a tyre in which slotted metallic springs are sunk in the thread of the tyre, the springs b are arranged so that the slots register radially and are filled with rubber connecting the inner and outer layers of the tyre a. The tyre is secured in position by bolts e which pass through holes in the solid ends of the springs b, the latter being held in position by a sleeve f. Metal washers g may be sunk in the tread a to hold the sleeve in position. The springs may be bound together and protected by a sheath or covering.
Patent GB-920574-A (GB)
Title: Improvements relating to pulse producing circuit arrangements
Inventor: SCOLES GRAHAM JOHN
IPC: H03K3/53
Filed: 1959-01-30
Abstract: 920,574. Valve pulse generating circuits. ASSOCIATED ELECTRICAL INDUSTRIES Ltd. Jan. 28, 1960 [Jan. 30, 1959], No. 3372/59. Class 40 (6). In a pulse generator of the type in which a pulse forming network is discharged into a load, ripple or slope at the top of the pulse waveform is minimized by connecting a transformer winding between the pulse forming network and the load, the effective impedance of the transformer being determined by the difference between the load waveform and a rectangular reference pulse or a reference voltage proportional to the amplitude of the required pulse. As shown, the pulse forming network PFN is discharged via a pulse transformer T1 into a klystron or magnetron load R when switch S is closed. A sample of the load waveform taken from a capacitive or resistive divider C1, C2 is compared at D with a reference voltage or reference waveform V1, the difference being amplified at E and fed to a valve V to control the effective impedance of a specified transformer T2 so that the top of the load pulse waveform is maintained constant. A non-linear voltage-limiting resistor or biased diode may be connected across valve V.
Patent GB-394418-A (GB)
Title: Improvements in elevating gear for use in barns and the like
IPC: B66C23/20
Filed: 1932-02-05
Abstract: 394,418. Cranes. OGLE, J., West Lodge, Heage Road, Ripley, Derbyshire. Feb. 5, 1932, No. 3423. [Class 78 (iv).] A crane for handling agricultural produce comprises a telescopic pole A, B, which is connected or hinged to a base-plate D, and is adapted to be secured temporarily to a roof member F, or to a detachable bracket Q extending outwardly from one of the vertical principals of the barn, and a slueing jib K which carries pulleys N<1> for the hoisting rope and is mounted on a member L which may be raised and lowered on the pole by a rope K<1>. The hoisting rope passes under a pulley P at the foot of the pole and is operated by a winch or by horse-draught.
Patent GB-266119-A (GB)
Title: Improvements in apparatus for making a combined fountain and syphon for aquarium
IPC: A01K63/04
Filed: 1926-02-08
Abstract: 266,119. Chadwick, J. E. Feb. 8, 1926. Aquaria.-A device for supplying water to and drawing it off from aquaria and aerating it consists of a fountain tube F with a jet on jets Z connected to a valved siphon tube S and to a flexible tube 0 connected to a movable tank T. For filling the aquarium A the tank T is elevated and the cock V is closed. For emptying, the tank T is set below the aquarium A and the cock V is opened. Water then siphons through the tube S and air is drawn in through the nozzLe Z. The nozzle Z is made readily detachable.
Patent GB-469773-A (GB)
Title: Improvements in photographic roll-film holders
IPC: G03B17/26
Filed: 1936-02-06
Abstract: 469,773. Film holders for photographic cameras. PETTIFER, F. J. Feb. 6, 1936, No. 3606. [Classes 97 (i) and 98 (i)] A holder for. kinematograph &c. film comprises a base and a lid, each formed preferably of mouldable material, the light trap channels being formed between the outer face of a wall on the base and the inner face of a wall on the lid, these faces being curved so that the film touches only at the edges. The base, Fig. 1, has an upstanding wall b defining 2 circular recesses a<1>, a<2>. Apertures c with light-tight caps enable one or both of the bobbins to be driven from the exterior. The lid, Fig. 2, has a side wall e. The lightexcluding channels are formed between the walls band e and extend from the apertures f<1>, f<2> to the apertures g<1>, g<2>. To ensure light tightness the wall b has a rebate b<1> fitting the groove d<1> in the lid, and the wall e has a rebate h fitting within the flange i on the base. The lid is held in place by the strip l with slots l<1>, l<2> to engage the heads of rivets k attached to the base and projecting through the lid. The film channel section is shown in Fig. 7.
Patent GB-527764-A (GB)
Title: Improvements in or relating to the manufacture of woven fabrics
IPC: D03D1/00
Filed: 1939-02-03
Abstract: 527,764. Woven fabrics. SHEPHERD, T. L., RICHARDSON, W., and SHEPHERD'S INDUSTRIES, Ltd. Feb. 3, 1939, No. 3615. [Class 142 (iv)] In a multiply fabric for collars &c. the fold line area is formed by a differential reinforcement of the warp threads in that area, the said differentiation being produced by additional or thicker warp threads in the upper ply as shown in Fig. 2, by the transfer of warp threads from the under to the upper ply as shown in Fig. 6, or by both methods as shown in Fig. 9. A coloured warp may be introduced in the area. Specifications 469,116, 481,015, [Group VIII], 491,492, 515,191 and 519,077, [all in Group VII], are referred to.
Patent GB-429208-A (GB)
Title: Improvements in or relating to water closets and bidets
IPC: E03D9/08
Filed: 1934-02-03
Abstract: 429,208. Sanitary closets with bidet attachments. ZORRAQUIN, G., 1188, Juncal Street, Buenos Aires. Feb. 3, 1934, No. 3634. [Class 26] A closet adapted for use also as a bidet has an elongated body, with an upwardly extending member 4<1>, a forward and downward extension 8 of the rear of the basin, spaced from, and co-operating with, the member 4<1> to form a trap, a liquid-supply device 10 for the member 8 and a seat 13 of which the aperture is so arranged that a vertical line through the rearmost portion of the edge thereof does not intersect the member 8. The closet is thus provided with a forward portion for ordinary use and a rear portion for use as a bidet. The supply device has a rose 9 and is controllable by a tap or taps 12, whilst the flush pipe 5 communicates with an apertured rim 6 and a pipe 7 the outlet of which is directed between the members 41, 8.
Patent GB-139281-A (GB)
Title: Improvements in proportional gas meters
IPC: G01F3/30
Filed: 1919-02-14
Abstract: 139,281. Parkinson & W. & B. Cowan, Weippert, E. D., and Cheshire, W. D. Feb. 14, 1919. Gas meters.-In a proportional gas meter comprising a main valve controlling the unmeasured flow of gas, and a secondary valve c o n - nected therewith controlling the flow through the tally - meter, a b e l l governor or expanding and collapsing chamber, subject to the pressure of gas on one side and to atmospheric pressure on the other, controls the valve positions. As shown in Fig. 1, the main supply flows from the inlet chamber 1 past a conical valve 10 to an outlet chamber 3, and the proportion to be measured flows past a conical valve 11 to a chamber 6 and through a tallymeter 7, the two streams rejoining at the outlet branch 9 of the conduit. The valve 10 is suspended from the crown of a bell governor 13 into which the gas enters through a stand-pipe 14, and the valve 11 is suspended from, and moves with, the valve 10, so that the areas of the two gas passages a.re proportional. The valve 11 may be made adjustable in size, comprising a tapered core 18, Fig. 3, and two side pieces 19 of V- section hinged to, and adapted to be moved over, the core. The bell is supported from an arm of a counterweighted lever 15 in an open vessel of water. In another form of apparatus, the other arm of the lever 15 carries the bell of a liquid seal, from which is suspended an inverted conical valve regulating the flow through the meter shunt. The valve of the meter circuit may also be carried on the crown of the bell governor controlling an aperture in a fixed plate. Fig. 6 shows a construction in which the bell carries a chamber 21 with an aperture 5 coacting with a fixed cone 11. Fig. 7 shows a further modification in which the valve 11 of the meter circuit is suspended from the main valve 10, which is hollow and partly immersed in a water seal; the gas from the meter 7 flows past the valve 11 to a branch pipe 8 connected with the main conduit on the farther side of the main valve. Balanced double valves may be employed for the main and meter supplies. Pressure gauges indicate the drop in pressure at various points.
Patent GB-969834-A (GB)
Title: Improvements in or relating to sitting furniture
IPC: A47C3/025
Filed: 1963-01-29
Abstract: 969,834. Rocking chains. MADRASSFABRIKEN DUX A.B. Jan, 29, 1963 [Jan. 31, 1962], No. 3665/63. Heading A4J. A rocking chair comprises a rigid seat and back assembly 4, 5 is pivotally mounted on a cross member 3 of a frame 1, and connected at its front end to the frame by means of a collapsible linkage 7, 8. The two links 7, 8 are pivotally connected together and have their other ends pivotally connected to holders 14, 15. Friction means in the form of cup springs is provided in at least one of said pivot connections and coil springs 16 are connected between the holders 14, 15 to tend to collapse the linkage.
Patent GB-588387-A (GB)
Title: Improvements in shuttle guards for looms
IPC: D03J1/24
Filed: 1945-02-14
Abstract: 588,387. Shuttle guards. BOARDMAN & BARON, Ltd., SIM, J., and SIM, W. Feb. 14, 1945, No. 3704. Addition to 571,773. [Class 142 (iii)] The guard bar of the parent Specification is formed with a depending guide surface on or near its front edge for controlling the motion of a deflected shuttle and guiding it towards a shuttle box. In the form shown, a flange 14 is attached to the front edge of the guard bar 8. In a modification, Fig. 7 (not shown), the guard' member and its depending guide are formed of rod or tube.
Patent GB-739419-A (GB)
Title: Improvements in or relating to anti-glare spectacles or goggles
IPC: G02C7/16
Filed: 1954-02-09
Abstract: 739,419. Goggles. DOORENBOS, H. R. Feb. 9, 1954, No. 3767/54. Class 97 (1). Anti-glare spectacles or goggles for motorists have, across each rim 1, an elongated rectangular framework the vertical sides 5 of which are provided with horizontal grooves in which flat opaque strips 3 having a light-absorbent surface are mounted at interspaces not exceeding 1.5 mm. a free space being left in each rim above and below the middle portion occupied by the framework. The depth of the strips 3 may vary over the framework.
Patent GB-1135052-A (GB)
Title: Waterproofing and decorating building materials
Inventor: BUISSERET OSCAR
IPC: C04B41/48
Filed: 1965-01-28
Abstract: 1,135,052. Coating surfaces. UCB (UNION CHIMIQUE CHEMISCHE BEDRUVEN) SOC. ANON. 28 Jan., 1966 [28 Jan., 1965], No. 3815/65. Heading B2K. [Also in Division C3] Compositions suitable for water-proofing or decorating building materials which may contain free lime comprise (a) 100 parts by weight of a film-forming copolymer of an acrylic or methacrylic ester with another such ester or a copolymer of such an ester with styrene; (b) 0.5 - 12.5 parts by weight of a dispersion agent selected from sodium methylene-bisnaphthalene sulphonate, condensates of 8 - 14 mols ethylene oxide with 1 mol #-naphthol, condensates of 2 - 8 mols ethylene oxide with 1 mol stearic or palmitic acid, condensates of 4 - 10 mols ethylene oxide with 1 mol cetyl, lauryl or oleyl alcohol, and fatty acid amides or alkylamines having 12 - 18 carbon atoms; (c) 0.5 - 12.5 parts by weight of a water-proofing agent selected from fatty acid amides or alkylamines having 12 - 18 carbon atoms, fatty acid - alkylene oxide condensates having 2 - 8 alkylene oxide units, #-acylamino-butyric acids having 12 - 18 carbon atoms in the acyl radical, butyl, ammonium or amine stearates or oleates, dialkyl ketones having 7 - 18 carbon atoms in each alkyl group, or a wax; or 0.5 - 40 parts by weight of a microcrystalline wax; (d) 150 - 250 parts by weight of an aqueous or organic solvent; (e) 0 - 200 parts by weight of a pigment and/or inorganic filler; (f) 0 - 1.5 parts by weight of an anti-foaming agent; and (g) 0 - 10 parts by weight of a coalescing agent. The consistency of the composition may be adjusted, if desired, by the addition of a further quantity of solvent. The (meth) acrylic ester components) of the copolymers may be derived from an aliphatic, araliphatic or cycloaliphatic alcohol. Where component (c) of the composition is a wax, this may be polyethylene wax, ceresin or a paraffin wax. Suitable organic solvents (d) include aliphatic or aromatic hydrocarbons, and aliphatic esters, alcohols and ketones. Components (e) specified are red or black iron oxide, titanium dioxide, burnt sienna, ochre, green chromium, oxide, gypsum, magnesium silicate, magnesium carbonate, calcium carbonate, pyrophyllite, mica, pumice, silica, diatomite, barium sulphate and alumina. The anti-foam (f) may be tributyl phosphate or 2-ethyl hexanol, and the coalescing agent may be ethylene glycol monoethyl ether acetate, diethylene glycol monobutyl ether acetate or hexylene glycol. The compositions are particularly suitable for application to asbestoscement agglomerates in the form of plane or corrugated boards, wall boards, tiles &c. The compositions can be applied by means of a spray gun, scraper or brush, or by the curtain painting method. In a preferred procedure, the substrate material is preheated to 40‹ - 60‹C. and then coated, the coated material left to stand for 0.5 - 1 minute, and then dried in an oven at 40‹ - 60‹C for 2 - 10 minutes. The weight of dry film coating may be from 30 - 85 g. per sq. m.
Patent GB-148592-A (GB)
Title: An improved stopper or funnel for containers
IPC: B65D47/06
Filed: 1919-02-17
Abstract: 148,592. Hill, F. R. Feb. 17, 1919. Funnels.-A combined stopper and funnel for a petrol or other container is provided with an internally screwy-threaded part to screw upon an externally-screwed ring or like part upon the container. The funnel may be flexible or collapsible so that it can be contained within the stopper and be enclosed by a screw-cap forming part of the stopper. As shown in Fig. 1, the stopper a is internally screw-threaded at both ends and provided with an internal annular rib a<1> against which the flange b<1> at the larger end of the funnel b is held by a screw-collar a<2>. The smaller end of tht funnel is fitted with a screw-plug b<2> having a transverse rib or handle part b<3>. To remove the contents from the container, the stopper a is unscrewed and its other end screwed on to the flange c<1> of the container so that the funnel b projects upwardly. On removing the plug b<2>, the liquid or powder can be poured from the container through the stopper a and funnel b. A gauze d or a perforated plate e, or both, may be provided within the stopper. Fig. 3 shows a telescopic or collapsible funnel held within the stopper g by a screw-cap g<1>. The funnel may be made of any suitable flexible material such as dressed canvas, leather, or rubber arranged over a helical spring f having projections f<1> to engage apertures g<2> at the lower ends of grooves g<3> in the wall of the stopper. When the cap g<1> is removed, the funnel is extended by the spring f ready for use. The stopper g may be screwed at each end so as to be reversible with the funnel extending into the container.
Patent GB-103212-A (GB)
Title: A New or Improved Device for use in Playing Games similar to Deck Quoits.
Inventor: NOTT HERBERT WALTER
IPC: A63B65/12
Filed: 1916-03-15
Abstract: 103,212. Nott, H. W. March 15, 1916. Projecting-appliances.-A game appliance for projecting disks, plates, or rings along a floor, deck, &c. comprises a box-like part a of horseshoe shape and a hollow handle b. Within the part a is a carrier d slidable on guides e<1> and connected by chains f<2> to springs f. The back of the carrier is attached to a chain j, which passes through the handle and is secured to a sliding piece h provided with a handle h'. The appliance is used by placing a disk in the carrier d, positioning the part a on the playing-surface, drawing back the carrier by means of the handle h', and releasing the handle so as to allow the springs f to advance the carrier and project the disk along the playing-surface.
Patent GB-725687-A (GB)
Title: Improvements relating to coupling devices for concentric shafts or like parts which are relatively displaceable axially
IPC: F16D3/06
Filed: 1953-02-11
Abstract: 725,687. Shaft couplings. DAIMLER-BENZ AKT.-GES. Feb. 11, 1953 [Feb. 12, 1952], No.. 3882/53. Class 80 (2). A sleeve 11 is slidably coupled to a shaft 10 by rows of balls 12 mounted in cages 15 and engaging the bottoms of longitudinal flared grooves 13, 14 in the shaft and sleeve. Stops 16, 17 limit the axial movement.