baber/WOPTO huggingface dataset:
Patent GB-570103-A (GB)
Title: Improvements in automatic firearms
IPC: F41A3/40
Filed: 1943-04-29
Abstract: 570,103. Automatic smallarms. McEWAN KING INDUSTRIES, Ltd., and LINDSAY, A. D. April 29, 1943, No. 6781. [Class 119] Consists of a toggle-link non- positive locking mechanism for an automatic smallarm of the blowback type. The firing-pin 19 is extended into the butt 7 and bears upon the mainspring 21. Togglelinks are pivoted to the firing-pin at 27 and their outer ends are jointed to locking arms 24 pivoted upon the breech-block 14. A spring 28 keeps the links collapsed during the breech-closing movement until the breechblock is home, after which the firing-pin continues its forward movement under the impulsion of the spring 21 and spreads the links, thereby moving the arms 24 into engagement with the chamfered front end of an abutment sleeve 8 slidably mounted in the casing 1 and yieldingly supported by a buffer spring 11. On discharge, the breech-block and firing-pin are both thrown back, but the latter, aided by its momentum and the spring 28, moves faster and breaks the toggles and withdraws the locking arms 24. The recoil of the firing-pin is finally arrested by a spring 23 which enters a cup-shaped abutment 13 in the butt-connection 7 at the end of the movement. A collar 22 on the firing-pin serves as the bent for engagement by the trigger sear.
Patent GB-623638-A (GB)
Title: Improvements in or relating to circuit arrangements for cathode-ray tubes
IPC: H04N3/185
Filed: 1946-03-05
Abstract: 623,638. Supply systems for space discharge apparatus; automatic regulation. STANDARD TELEPHONES & CABLES, Ltd., and TAYLOR, F. H. March 5, 1946, No. 6785. Drawings to Specification. [Class 38 (iv)] The voltages for the respective electrodes of a cathode-ray tube are derived from a seriesconnected chain of glow discharge tubes, connected between the D.C. supply leads, to ensure practically constant potential at the electrodes, with varying current, to dispense with byepass condensers, and to reduce the mass of the apparatus and the current drain of the system. Electrodes requiring intermediate potentials may be connected to taps on resistances shunted across certain glow tubes. High resistances may be shunted across all but one of the glow tubes to ensure that the correct striking voltage is available across each tube. The circuit may be supplied from a small permanent magnet 400 cycle alternator, driven by the rotary converter in an aircraft, and through a transformer and voltage doubling rectifier.
Patent GB-498116-A (GB)
Title: Tubes or guides for the transmission of electromagnetic waves
IPC: H01P3/12
Filed: 1938-03-04
Abstract: 498,116. Dielectric guides for displacement waves. ALLGEMEINE ELEKTRICITATS-GES. March 4, 1938, No. 6866. Convention date, March 4, 1937. [Class 40 (v)] A dielectric transmission line for ultra-short waves consists of a hollow tube of ceramic material, cement, stoneware, or cast iron coated on the interior with a thin layer of metal such as copper or aluminium, or with metal foil. The metal may be deposited by spraying or by cathode sputtering, or it may be deposited from vapour. This allows a guide of wide diameter and low attenuation to be made at comparatively small cost.
Patent GB-549688-A (GB)
Title: Improvements in or relating to devices adapted to clean sieves in operation
IPC: B07B1/52
Filed: 1942-05-05
Abstract: 549,688. Sifting apparatus. TURNER, Ltd., E. R. & F., and STUBBS, W. F. May 29, 1941, No. 6902. [Class 117] Sieve cleaning devices adapted to engage both surfaces of the sieve comprise brushes 4 and hanging elements such as chains 5 or wires, plates &c. The cleaning devices are carried by a frame running on rollers 9 on the sieve supporting structure and reciprocated independently of the sieve by a crank and connecting rod 14. The brushes are clamped to transverse rods 7, and the chains are slung between bars 13 carried by rods 12. Slots 15, which may be partly covered by hessian 16, are provided in the sieve frame to give clearance for the relative movement of the cleaning devices.
Patent GB-416056-A (GB)
Title: Improvements in or relating to the production of solid chlorinated rubber products
IPC: C08J3/16
Filed: 1933-03-07
Abstract: A solution of chlorinated rubber is emulsified or dispersed in a liquid medium which is immiscible with the solvent, and a non-solvent for chlorinated rubber, and the emulsion is heated to evaporate the solvent and leave a cellular product.  Water is a suitable liquid medium, and the solvent is preferably one with a lower boiling point, or which volatilizes in steam.  The viscosity of the solution should not be so high that emulsification is difficult.  The emulsion may be injected into a volume of heated and agitated medium if desired, under reduced pressure, in which case small pieces of cellular chlorinated rubber are produced, or the emulsion may be filled into a mould and heated to produce a cellular block.  In the latter case, the addition of plasticizers such as tricresyl phosphate, dibutyl phthalate, chlorinated naphthalene is preferably avoided; otherwise they and fillers, dyes &c. may be added.  Specifications 402,454, and 414,072, [Group III], are referred to.
Patent GB-1504631-A (GB)
Title: Mechanismus
IPC: F16H37/12
Filed: 1975-02-19
Abstract: 1504631 Toothed gearing J H BREMS 19 Feb 1975 [20 Feb 1974] 6935/75 Heading F2Q A drive mechanism for a reciprocating and multiple step index mechanism utilizes pairs of rotating drive members and eccentric members 64, 66, 16, 20 mounted in non- rotational relation, the pairs being connected to rotate with an angular velocity ratio within the range 1À6 : 1 to 2À5 : 1. An output member 14 is arranged in driving relation to one of the eccentric members 16 and is influenced also by the rotation of the other eccentric member 64. Power input is directed to one of the pairs of drive members.
Patent GB-210314-A (GB)
Title: An improved method of renewing the damaged ends of boiler tubes
IPC: F22B37/10
Filed: 1923-03-10
Abstract: 210,314. Schr÷der, E. March 10, 1923. Tubes.-The ends of boiler tubes, particularly for locomotives, are renewed by cutting off the damaged end, shaping the new end a and the end of a supplementary tube b, fitting them together to form an overlapped joint and then welding by a pair of roller electrodes d, d<1> one of which revolves on the outer and the other on the inner circumference of the joint. The overlap may be wide enough to allow two or more annular welds to be made. The joint may be prepared as shown in Figs. 1 or 3, or the tube expanded to form a socket for the renewal piece. In any form the tube a may be shaped to form the spigot and the piece b to form the socket.
Patent GB-194539-A (GB)
Title: Improvements relating to brickmaking machines
IPC: B28B13/02
Filed: 1922-03-10
Abstract: 194,539. Fawcett, Ltd., T. C., Fawcett, D. L., and Bottomley, A. E. March 10, 1922. Combined moulding and repressing machines; cylinder machines; delivery; feeding. - Pusher mechanism for delivering clay blanks from a rotating cylinder mould to a press comprises a pusher slide b operated from a cam-race i on a driving- wheel j through levers having arms of equal length. One lever a comprises a pair of arms a<1>, a<2> pivoted on a pin c, and is connected through a vertical link e to a similar lever g. The link e is joined to the levers g, a, by ball joints f, d, the latter comprising two members d' having partly spherical outer faces and inwardly projecting portions d<2>, which engage in openings at the end of the arm a. The members d<1> are held together by a screw-adjusted sliding-bdock d<3>, by which the arm a<2> is connected to the link e.
Patent GB-416381-A (GB)
Title: Improvements in or relating to tubes employed as holders for textile threads or yarns
IPC: B65H75/18
Filed: 1933-03-09
Abstract: 416,381. Bobbins &c. LOWRY, A. S., c/o Textile Paper Tube Co., Ltd., Oakwood Mills, Romiley, Cheshire. March 9, 1933, No. 7129. [Class 120 (iii).] Paper tubes 3 have at least one end coated for the requisite distance with smooth vulcanized rubber 4 to prevent the yarn catching during unwinding. The rubber is preferably applied by dipping into a bath of rubber latex having a high percentage of vulcanizing accelerators and sulphur, with wax if desired, or the latex may be sprayed on. The rubber may cover the outside, edges, and inside of the tube, or a metal plug may be inserted in the tube before dipping so that only the outside is coated.
Patent GB-650380-A (GB)
Title: Manufacture of new glycosides from strophanthus sarmentosus
IPC: C07J19/00
Filed: 1948-03-08
Abstract: Sarmentoside A and sarmentoside B are obtained from an extract of the seeds of Strophanthus sarmentosus by treating it with a chlorinated solvent, extracting the residual aqueous solution with a low molecular weight alcohol, if desired admixed with a chlorinated solvent, and isolating the sarmentosides from the alcoholic solution; the original extract may be one obtained by treating the seeds with water and a water-soluble organic solvent and may have been freed from fatty and inert substances as follows: the seeds are ground, de-fatted with ether or petroleum ether and dried; the higher glycosides may be hydrolysed by fermentation, preferably in the presence of a disinfecting agent such as toluene or chloroform, using the enzyme present in the seeds.  After treatment with the aqueous organic solvent (e.g. methanol, ethanol, acetone or ethyl acetate) until the residue no longer has a bitter taste, the inert and colouring matters are removed from the extract, for example by precipitation with a lead compound.  The extract may then be acidified and concentrated under reduced pressure.  The chlorinated solvent used for extracting the unwanted glycosides such as sarmentocymarin and cymarin may be chloroform, ethylene dichloride, methylene dichloride or trichlorethylene.  The alcohol used to extract the sarmentosides from the aqueous phase may be methanol, ethanol, propanol, butanol, amyl alcohol or ethylene glycol, to which may be added a chlorinated solvent if desired.  The other glycosides may be removed, if desired, at any stage by hydrolysing them with a dilute acid and removing the genins with a chlorinated solvent. The sarmentosides A and B may be separated from the alcoholic extract by fractional crystallisation or chromatography and then purified by recrystallisation.  They may be esterified, e.g. with pyridine and acetic anhydride, during the course of separation, and the free glycosides regenerated by cautious hydrolysis, e.g. with potassium bicarbonate.  Examples are given to illustrate the process of the invention, and physical constants are quoted for the two sarmentosides and for sarmentoside B acetate.
Patent GB-235324-A (GB)
Title: Improvements relating to the turning of rolling stock axles and like cylindrical bodies
IPC: B23B5/06
Filed: 1924-03-20
Abstract: 235,324. Ord, L. C. March 20, 1924. Shafts.-In a process for making rolling stock axles, the blank a is first held in pneumatic or other vices b while the ends are turned and faced by means of tool-heads comprising turning-tools e and facing-tools g, the latter being mounted on holders f fed through the heads by cam mechanism. The work is centred by drills h and then transferred to a double-ended lathe having chucks i preferably driven by separate electric motors. For turning the journal j and adjacent part k slides provided with tools m arranged in groups of roughing, sizing, and finishing-cutters are fed beneath the work. Finally, the axle is finished by grinding or rolling, preferably in a machine having burnishing- rolls o mounted in pivoted holders r and adjusted by pneumatically operated wedges p. Specification 16952/06 is referred to.
Patent GB-1383702-A (GB)
Title: Magnetic apparatus
IPC: G07C9/00
Filed: 1972-02-16
Abstract: 1383702 Magnetic verifier SONY CORP 16 Feb 1972 [25 Feb 1971] 7245/72 Heading G4M [Also in Divisions H1 and E2] A magnetic verifier has a plurality of series connected transformers having a core material that can be saturated by a magnetic field to substantially prevent transmission of an A.C. signal from a transformer primary to its secondary winding. An A.C. source 5 is connected to the first transformer primary and the last secondary is connected via a further transformer to a silicon controlled rectifier 7 operating on electronic locking means 9. A magnetic field is produced by master key 10, -10 and represents a suitable digital number either by permanent magnets in a plate or strip (Figs. 7, 8, not shown) or by a wire carrying plate or strip connecting a suitable source to windings on a bar (Figs.3,5, not shown). A correct key or credit card opposes the fields produced by a master key so that a signal from source 5 can operate the S.C.R. 7.
Patent GB-139035-A (GB)
Title: Improvements in drawing-compasses
IPC: B43L9/06
Filed: 1919-03-24
Abstract: 139,035. Horwood, J. March 24, 1919. Compasses. - In compasses of the spring-bow type, the spring a is secured to a block c, and its ends t, r are bent at right-angles. A spring b is riveted to one limb of the spring a and has its ends s 'bent at rightangles, the ends s, t being adapted to receive the pencil &c. member k, which can be adjusted by the spring clip m. Secured to the other limb of the spring a is a spring e the lower end of which is adapted to receive the adjusting-device q for the needle-point o. The compasses are adjusted by a right and left handed screw f having a knurled head g and engaging with blocks h.
Patent GB-622385-A (GB)
Title: Improvements relating to fluid check devices for doors
IPC: E05F3/10
Filed: 1947-03-17
Abstract: 622,385. Door operating-appliances. NEWMAN & SONS, Ltd., W., and ROLLASON, S. A. March 17, 1947, No. 7281. [Class 65 (i)] Checks; floor springs. In a fluid check comprising a piston and a cylinder or housing moved relatively to one another by a cam during the closing of the door, means are provided to move the piston or cylinder positively to follow the cam during at least part of the opening movement of the door to ensure that the check is not made ineffective by sticking in the closed position ; the usual light spring for effecting this follow-up may be retained or dispensed with. In the arrangement shown, in a floor spring similar to that described in Specification 514,238, for a swing door, the cam 8, on the door spindle 9, which engages a roller 7 on the end of the oil-check cylinder 5 sliding over a fixed piston 1, also engages a pair of levers 15 which engage behind the roller 7 as shown to move the cylinder outwards as the door opens.
Patent GB-858808-A (GB)
Title: Radial-flow fan or pump
IPC: F04D29/42
Filed: 1958-03-06
Abstract: 858,808. Centrifugal fans and pumps. AMME, W., AMME, P., and SELBACH, A., [trading as POLLRICH & CO., P.]. March 6, 1958 [March 12, 1957], No. 7284/58. Class 110 (1). In a centrifugal fan or pump, leakage of fluid through the gap 7, Fig. 4, between the impeller shroud 8 and the inlet nozzle 6 is reduced by retarding the velocity of the boundary layer so as to increase its static pressure at the gap. For this purpose, the inlet nozzle 6 is formed adjacent the gap 7 as a surface of revolution 5 of arcuate cross-section, the chord s of the arc being between 6 and 8 times its height h. The tangent 15 to the end of the arc is at an obtuse angle to the tangent 13 to the arcuate portion 14 of the impeller shroud 8. Tangent 13 is approximately parallel to the impeller axis and is located at the narrowest part of the gap 7. This construction prevents detachment of the turbulent boundary layer from the surface 5 by shifting the place at which it would have detached to a point slightly downstream of the gap 7, to ensure that the maximum pressure increase due to retardation of the boundary layer flow occurs at the gap. The required turbulence in the boundary layer may, if necessary, be promoted by a wire ring 2 or a weld seam. It is stated that the profile of meridional velocities C m , with minimum values adjacent the shroud 8, remains essentially unaltered until the fluid leaves the impeller, and that the profile is such that flow disturbance in the casing 11 is prevented. The leakage through the gap 7 can be further reduced by providing a projection 12, Fig. 5, the position of which can be adjusted by axial displacement of the nozzle 6.
Patent GB-830032-A (GB)
Title: Improvements in or relating to scanning devices
IPC: H04N5/208
Filed: 1956-03-08
Abstract: 830,032. Magnetic recording and reproducing apparatus. TELEFUNKEN G.m.b.H March 8, 1956 [March 8, 1955], No. 7294/56. Class 40 (2). In a scanning arrangement having a finite aperture and constant speed relative to a record, such as a magnetic record apparatus, distortion due to the finite aperture is reduced by means to derive a differentiated signal in relation to the signal sensed by the aperture, one or more unidirectional delay loops connected to the signal deriving means and a utilization circuit connected to said signal deriving means and delay loops. One embodiment is described with reference to Figs. 3 and 4, in which a rectangular pulse, Fig. 4 (a), is recorded on the tape. A head H is connected, via an amplifier V1, to a load resistor R and, by an amplifier V2, to the input terminals of a delay line L having a wave resistance Zt and terminated by a resistance Z which is equal to the wave resistance. The terminated end of the delay line is connected, via amplifier V3, to the load resistor R. The resistance Z serves to avoid reflections in the delay line, whilst the amplifiers cause the delayed signal to have correct polarity. When the head H, having a finite gap S is moved over the tape, a flux, Fig. 4 (c), having trapezoidal form is produced in which the sloping flanks correspond to the aperture width S which results in an induced voltage E as represented in Fig. 4 (d) consisting of two pulses, one positive and the other negative. The positive pulse is applied, via amplifier V1 to load resistor R and, via amplifier V2 to delay line L, so that after a period of time t the voltage E(t) is repeated as shown in Fig. 4 (e). After time 2t the positive pulse of E(2t) will appear in the delay line, and so on, until negative pulses appear and annul the positive pulses so that the effective output to the load resistor is the waveform B(t) as originally recorded. Figs. 5 and 6 show a method by means of which in practice a closer approximation to a bell curve may be obtained by combining several rectangular components. In this case the delay line L1 has several tapping points t2, t3, t1-t3 and t1-t2 connected through amplifiers V4V5, V6V7, V8 and V9, respectively.
Patent GB-116087-A (GB)
Title: Improvements in or relating to Apparatus for Administering Oxygen or other Gas.
Inventor: DURIEU LOUIS
IPC: A61M16/00
Filed: 1918-05-02
Abstract: 116,087. Durieu, L., and Aulanier, G. M. C. March 10, 1917, [Convention date]. Inhalers and respirators.-Apparatus for administering oxygen or other gas simultaneously to a number of patients comprises a metal drum a having a number of supply cocks b connected by tubes d to inhaling-masks o. Secured to the open end of the drum are rubber bags e protected by netting and adapted to be turned into the drum when not in use, being retained therein by pivoted covers f, which may also act as supports for the cylinders when opened as shown in Fig. 1. The covers are secured in this position by plates i pivoted thereto at j and each adapted to engage in a groove k in the other. Normally, the parts i are locked by catches l<1> on sliding supports l which moves in guides l<2>, and are released therefrom when the supports l are lowered, bolts m passing through slots n being provided to secure the parts in position. Oxygen is supplied to the casing by a hose h, and the masks q are padded round the edges and provided with inhaling and exhaling valves q, r.
Patent GB-903355-A (GB)
Title: Furfurylmercaptopyridine compounds and preparation thereof
IPC: A61K31/00
Filed: 1961-03-01
Abstract: The invention comprises 2-(5-nitro-2-furfurylmercapto)pyridine-1-oxide, 2-(2-furfurylmercapto)pyridine-1-oxide, their acid addition salts, pharmaceutical compositions thereof and the preparation of the compounds by reaction of 5-nitrofurfuryl halide or furfuryl halide with 2-mercapto-pyridine-1-oxide, the product in free base form being converted into an acid-addition salt, if desired, by treatment with an acid.  Pharmaceutical compositions containing the above compounds are effective against a variety of micro-organisms, and may be administered orally e.g. in the form of tablets, or topically, e.g. as ointments or powders.
Patent GB-1438458-A (GB)
Title: Magnetic recording medium having binder-free phosphide coating
IPC: H01F10/18
Filed: 1974-02-19
Abstract: 1438458 Sputtering magnetic recording materials MINNESOTA MINING & Mfg CO 19 Feb 1974 [20 Feb 1973] 7571/74 Heading C7F A magnetic recording medium comprises a low permeability substrate of e.g. stainless steel, Cu or alloys thereof with Be, Ag, Mg or Al and alloys thereof or Co based super alloys glass or a polysulphane or polyimide, coated by sputtering with M 2 P where M is a combination of at least two transition metals, e.g. Co, Fe and Ni, providing a Curie temperature of 50 to 350‹C, a Br of 1500 gauss, and an Hc of at least 500 oersteds. The coating may be heated to above 200‹C during or after sputtering. The phosphorics may contain small amounts of arsenic or boron. As shown, the material is sputtered from a target 20 using a tungsten wire cathode 11 and anode 18 on to a moving endless barrel 10. A magnet 17 is provided at exit of the cathode chamber and the sputtered material passes through an aperture 25, which can be closed by a pivoted shutter 28, during cleaning.
Patent GB-725587-A (GB)
Title: Improvements in an electromagnetic friction device
Inventor: PIERCE WILLIAM C
IPC: F16D27/00
Filed: 1953-03-19
Abstract: 725,587. Electromagnetic brakes. WARNER ELECTRIC BRAKE & CLUTCH CO. March 19, 1953, No. 7633/53. Class 103 (1). An electromagnetic brake of the type in which an armature 10 is drawn into engagement with the pole faces 14 of a core 11 of magnetic material by a permanent magnet 22 and moved away to release the brake by the energization of a coil 23, comprises means for automatically maintaining a predetermined clearance between the armature 10 and pole faces 14 when the brake is de-energized. Such means comprises a bushing 56, which moves with the armature 10, and forces a stop in the form of a split ring 68 along a pin 58 secured to a fixed structure 59. On release of the brake the movement away of the armature 10 is limited by the engagement of an abutment 65 in the stop 68. The magnet structure comprises a permanent magnet 22 and energizing coil 23 a magnetic restriction 34 in the form of a gap filled with a non- magnetic material, such as brass, acting to produce two toroidal flux paths, one of relatively high reluctance extending through the magnets and core, and another of relatively low reluctance extending through the magnets and armature.
Patent GB-325136-A (GB)
Title: A universal secauteur adaptor for pruning tall trees
IPC: A01G3/025
Filed: 1929-03-09
Abstract: 325,136. Noble, T. J. March 9, 1929. Shears.-A member 7 secured to the end of a long pole 6 has an extension plate 7a and a plate 8 between which one arm 4 of a pair of shears is clamped by bolts 23, 24 accommodated in inclined slots in the plates 7<a>, 8. The end of the arm 4 rests on a projection 20. The other arm 1 of the shears is secured to a socket 39, to which is attached a cord 43 passing over a pulley 36 to the other end of the pole 6, so that the shears can be used for pruning tall trees with the operator standing on the ground. The member 7 may be a casting or may be stamped from sheet metal. The socket 39 may have a packing member so that shears having different sizes of operating arms may be used.