baber/WOPTO huggingface dataset:
Patent GB-415413-A (GB)
Title: Improvements in automatic electrical circuit breakers
IPC: H01H71/10
Filed: 1933-02-21
Abstract: 415,413. Automatic circuit breakers. CRABTREE, J. A., Endwood, Little Aston Park, Sutton Coldfield. Feb. 21, 1933, No. 5682/34. Divided on 415,387 and addition to 415,129. [Class 38 (v).] The circuit-breaker described in the parent Specification is fitted with a trip catch a adapted, as by means of a cam surface a<5>, to definitely displace the arm b<1> of the bell-crank b to accelerate the opening movement of the contact, on heavy overload or in other circumstances where the spring-action may be inadequate.
Patent GB-878349-A (GB)
Title: Controlled-blocking oscillator
IPC: H03K3/16
Filed: 1958-02-21
Abstract: 878,349. Valve pulse generating circuits. STANDARD TELEPHONES & CABLES Ltd. Feb. 21, 1958 [Feb. 26, 1957], No. 5713/58. Class 40(6) The voltage/time integral of a pulse from a blocking oscillator is controlled by an electromagnetic device having a low and a high impedance state connected across the secondary winding of the feedback transformer. Fig. 1 shows a free-running blocking oscillator in which the area of the output pulse is controlled by a saturable reactor SR comprising a tape-wound core of ferrite, permalloy or a silicon or nickel alloy preferably with a rectangular hysterisis loop. The normal voltage/time pulse integral is more than half the saturation flux/turns product, The anode current builds up rapidly due to the regenerative feedback until the reactor SR saturates, preventing further increase in current and regeneratively cutting off the valve. During the pulse, D1 clamps the grid to earth, the voltage induced at point A charging capacitor C to a voltage -VB so that the valve remains cut off until C has discharged via R and R1. The diodes D1, D2 stabilize the pulse recurrence frequency and amplitude. Since the pulse time integral is also stabilized by the saturable reactor SR, the duration is effectively stabilized. The sawtooth waveform across C may be used as a time base. Modifications.-In Fig. 4 (not shown) the output is developed across a cathode resistor and a different biasing arrangement is used. Fig. 5 shows a blocking oscillator in which the pulse duration is determined by switching in one of saturable reactors SR1, SR2, SR3. The amplitude is controlled by adjustment of tappings on the source GDB. Continuous control of duration may be obtained by adjustment of a D.C. bias on the core of the reactor SR as in Fig. 8, which shows the reactor split into two cores having a common D.C. biasing winding DCW. The D.C. bias may be controlled by a current proportional to a slowly varying magnitude to compensate for variation in said magnitude. The amplitude-controlling source -VB may be replaced by a Zener diode. The amplitudecontrolling diode D2 may be replaced by a gas tube or a varistor.
Patent GB-458970-A (GB)
Title: Improvements in or relating to screw presses for pressing out liquid
IPC: B30B9/16
Filed: 1936-02-27
Abstract: 458,970. Screw - conveyers. AKTIESELSKABET KAMPENS MEK. VERKSTED, 50, Brinkensgate, Oslo, Norway. Feb. 27, 1936, No. 5874. Convention date, March 5, 1935. [Class 78 (i)] [See also Group I] In a press for removing liquid having two or more screws engaging each other and rotating side by side in the same casing. each screw being composed of at least two sections located end to end and connected by an intermediate tapered portion, the " thread volume " of the sections decreases continuously towards the outlet and the section nearest the outlet is of less external diameter at its inlet end than the other at its outlet end. The casing 3 is composed of longitudinal bars held by rings 4 to provide spaces for the escape of the liquid. The screw section 6 is of less external diameter than the section 5. The section 5 has a uniform core diameter 9 and a decreasing screw pitch, while the section 6 has a constant pitch and an increasing core diameter 9. A continuous pressing action is thus obtained. The tapered portion 10 may have a uniform or decreasing " thread volume " or threads may be omitted from the part 10. In a modification, both sections have constant core diameters and threads of decreasing pitch. The sections of the screws may be detachable and made of different materials such as cast iron and steel.
Patent GB-687701-A (GB)
Title: New amino esters of dithiocarbamic acids and a process for their preparation
IPC: C07C333/18
Filed: 1951-03-12
Abstract: The invention comprises compounds of the general formula <FORM:0687701/IV (b)/1> wherein R1 and R2 represent alkyl radicals each containing 4-8 carbon atoms, A a straight or branched alkylene chain containing 2-6 carbon atoms, and R3 and R4 lower alkyl groups each containing 1-5 carbon atoms, and their acid addition salts, and the manufacture of the amino esters by reacting a dialkylaminoalkyl halide of the general formula <FORM:0687701/IV (b)/2> (wherein Hlg represents a halogen atom) with a dithiocarbamate of the general formula <FORM:0687701/IV (b)/3> (wherein M represents an equivalent of an alkali or alkaline-earth metal or a dialkyl-ammonium radical). The products possess bacteriostatic (e.g. tuberculostatic) properties, and are also useful as rubber accelerators.  In examples, sodium dibutyldithiocarbamate is refluxed in alcohol with: (1) dimethylaminoethyl chloride; (2) diethylaminoethyl chloride; (3) 1 - dimethylamino - 2 - chloropropane.  The hydrochlorides of the products are described.  Specification 587,105 is referred to. Dithiocarbamates of the third general formula above are obtainable by reacting carbon disulphide with the corresponding secondary amine, followed, if desired, by double decomposition with an alkali or alkaline-earth metal salt.  Alternatively, when M represents an alkali metal, the carbon disulphide and secondary amine may be reacted in the presence of an alkali metal alcoholate, e.g. sodium dibutyldithiocarbamate is prepared by reacting carbon disulphide with dibutylamine in the presence of sodium ethoxide.ALSO:As rubber accelerators may be employed amino esters of dithiocarbamic acids, of the general formula <FORM:0687701/V/1> wherein R1 and R2 represent alkyl radicals each containing 4-8 carbon atoms, A a straight or branched alkylene chain containing 2-6 carbon atoms, and R3 and R4 lower alkyl groups each containing 1-5 carbon atoms, e.g. dimethylaminoethyl, diethylaminoethyl or 2-dimethylaminoisopropyl dibutyldithiocarbamate.  Specification 587,105, [Group IV], is referred to.
Patent GB-880979-A (GB)
Title: Non-servo disc brake, more particularly for motor vehicles
IPC: F16D55/14
Filed: 1959-02-20
Abstract: 880,979. Disc brakes. KLAUE, H. Feb. 20, 1959 [Dec. 24, 1958], No. 5962/59. Class 103 (1). A disc brake comprises two non-rotatable discs 7, 8 moved apart by rotation of a ring 11 carrying rollers 14, 15 in inclined recesses 12, 13, 18, 19 in the ring and discs, to engage a rotating housing 2, 3. The discs have projections 29, 30 in recesses 6 of a fixed carrier 5 and are biased to the release position by springs 26 engaging stamped projections 27, 28 of the discs. The ring 11 is rotated by a lever 24, which may be operated by a compressed air cylinder and released by a spring, through shaft 23 and a gear 25 engaging a toothed portion of the ring, the ring being centred by balls 21 in a ring 20 fixed to disc 7.
Patent GB-444929-A (GB)
Title: An improved process for the production of aeration yeast
IPC: C12N1/18
Filed: 1935-02-26
Abstract: As nutrient in the manufacture of aeration yeast, the degradation products, consisting mainly of amino acids, obtained by a single stage acid hydrolysis of animal albuminous substances and/or their highly polymerized hydrolysis products are used. Examples are keratin, glutin, chondrin, collagen, ossein.  The hydrolysate containing dissolved hydrolysis products can be used for clarifying and acidifying the molasses used as carbohydrate material.  In an example 100 kgms. of 40 per cent gelatin jelly and 60 kgms. of keratin substance are boiled with 50 litres of water and 8 litres of concentrated sulphuric acid for 8 hours. The yield of yeast under fine aeration is increased.
Patent GB-421869-A (GB)
Title: Improvements in safety-appliances for the protection of railway trains or locomotives
IPC: B61F19/08
Filed: 1934-02-26
Abstract: 421,869. Stopping trains. DEY, P. C., A/13, Road No. 2, Water Tower, Patna, India. Feb. 26, 1934, No. 6139. [Class 105] [See also Groups XXXII and XXXI] A pilot trolley adapted to run in the front of of an engine or train for the purpose of avoiding collisions and derailments is connected with the engine by one or more automatic switches which under certain conditions open an electric circuit including one or more electromagnets associated with the engine controls, brakes, alarms, &c., whereby the train is brought to rest. The trolley is preferably self-driven and provided with means for keeping its speed equal to that of the train. As shown the separators are in the form of lazytongs H to which both sufficient rigidity and resilience are given by means of friction joints and springs, either a single lazytongs being employed or two or more sections connected by intermediate supporting trolleys. The pilot trolley T is propelled by a motor A controlled by a regulator G, which comprises a rack-andpinion mechanism actuated by relative displacement between the trolley and the separator and rotating an arm j, Fig. 4, moving over resistances r. On the trolley are mounted buffers B associated with switches b, b, a guard C associated with switches c, c, and a frame D associated with switches d, d, the object of these elements being to ensure, when an obstacle of any character is encountered, the breaking of a circuit X that includes the switches and leads to the engine. Additional switches e, e are brought into operation if the trolley meets loose rails, switches g, g if the trolley overturns or is derailed, and inertia switches i, i by any sudden stoppage. When the circuit X is opened an electromagnet M, Fig. 9 on the locomotive is de-energized, a weight W falls and the regulator handle L is moved to cut off the supply of steam to the cylinders ; simultaneously a second electromagnet effects an application of the brakes, and another electromagnet causes a visible or audible danger signal to be given.
Patent GB-1270802-A (GB)
Title: Remote control of vending machines
Inventor: PROOPS SAMUEL ELEAZAR
IPC: G07F5/18
Filed: 1968-03-08
Abstract: 1,270,802. Amplitude modulation. QUICKMAID RENTAL SERVICES LTD. 7 March, 1969 [8 March, 1968; 5 Feb, 1969(2)], No. 11441/68. Heading H3R. [Also in Divisions A4 and G4] An audio-frequency tone is applied to the centre tap of a modulator transformer 91 connected in the supply circuit of a radio frequency oscillator 92. The tone is generated by a multivibrator 81, 82 followed by a filter 84 converting the pulsed signal to a sine wave.
Patent GB-1084605-A (GB)
Title: A double clutch unit
Inventor: ELLIS FREDERICK EDWARD
IPC: F16D25/10
Filed: 1965-05-04
Abstract: 1,084,605. Friction clutches. AUTOMOTIVE PRODUCTS CO. Ltd. April 26, 1966 [May 4, 1965], No. 6208/66. Heading F2C. The subject matter is identical with part of that described in Specification 1,084,604, but the claims are directed towards the double clutch unit for connecting the input bevel pinions to the input shaft.
Patent GB-896553-A (GB)
Title: Improvements in or relating to a wheel and brake drum assembly
IPC: F16D65/10
Filed: 1959-02-24
Abstract: 896,553. Cooling brake drums. KELSEYHAYES CO. Feb. 24, 1959 [April 7, 1958], No. 6354/59. Class 103 (1). In a wheel and brake drum assembly a wheel body 2 and a tyre-carrying rim 3 is provided with a composite brake drum which includes an annular flange 20, provided with an annular cast-iron braking surface 25, radially inside the rim 3 in spaced relation thereto, the flange 20 having an annular extension 26 extending axially beyond the rim 3 to provide an air scoop for flow of air into the space between the rim 3 and the flange 20 while the wheel is rotating and angularly-spaced baffle means 28 are provided on the extension inclined with respect to the direction of rotation of the wheel for increasing the flow of air and producing turbulence. The baffle means 28 comprise an annular series of integral louvers on the radially outer side of the extension 26 and inwardly of its peripheral edge. In the embodiment illustrated in Figs. 1 and 2, all of the louvers on the extension open circumferentially of the wheel in the direction of rotation 30 thereof. Other embodiments showing different arrangements of louvers are disclosed in the Specification (e.g. as shown in Figs. 3 and 7).
Patent GB-556627-A (GB)
Title: Improvements in saw sets
IPC: B23D63/02
Filed: 1942-05-11
Abstract: 556,627. Setting saws. FRIZZEL, R. F. May 11, 1942, No. 6381. [Class 145 (ii)] A hand - operated saw-setting device comprises a body portion 12 provided with a handle 13, another handle 23 pivoted to the body 12, and devices for clamping a saw blade to the body and for setting a saw tooth both actuated by pressing the handles together. The body is provided with a flat face 14 against which a saw blade can be clamped by the front end of a pivoted jaw 16. The tail end of the jaw 16 is connected by a plunger 26 and a spring 36 with the handle 23. The front end of this handle is connected to a plunger 38 that slides throught the body and is provided at its upper end with a recessed portion having an inclined face 47 that co-operates with a small projection 44. In use, a saw blade 56 is placed against the face 14 with a tooth between the bifurcated end 53 of an adjustable gauge 51. By pressing the handles 13, 23 together, the jaw 18 is caused to clamp the blade 56 against the face 14, and the part 47 of the plunger 38 engages the saw tooth and bends its down into contact with the projection 44.
Patent GB-1133584-A (GB)
Title: Method and apparatus for use in lasting shoes
IPC: A43D13/00
Filed: 1967-02-10
Abstract: 1,133,584. Boots &c. J. S. KAMBORIAN. 10 Feb., 1967 [18 Feb., 1966], No. 6440/67. Heading A3B. The Specification is identical with that of Specification 1,087,698 but the claims relate to the movements of the heel section and the heel wipers relative to the shoe assembly.
Patent GB-945789-A (GB)
Title: A device for inserting and removing timepiece crystals
IPC: G04D3/06
Filed: 1960-02-24
Abstract: 945,789. Watchmakers' tools. B.TAUBERT. Feb. 24, 1960 [Feb. 24, 1959; March 25,1959], No. 6532/60. Heading G3T. [Also in Division B4] A tool for inserting and removing watch glasses comprises a split ring, a first handle 12 fixed to a median portion of the ring, a second handle 13 fixed to a free end of the ring and means for causing the ring to contract or expand when the second handle is moved in relation to the ring and for locking the ring in its contracted position. The split ring comprises an outer split ring section 11 and an inner, interchangeable split ring section 14, one inside the other. The inner surface of the split ring section 14 may be circular or of other shape. In a modification the inner ring section 14 is separated from the outer ring section 11 by an intermediate ring having radial peripheral projections. An arm 15 of the handle 13 is pivoted at 29 to one end of the ring 11, the handle 13 being also pivoted at 30 to the other end of the ring through a toggle lever 41. The toggle lever 41 is pivoted at 42 to a guide 36 which carries a threaded stud 35. A cylindrical nut 37 longitudinally slidable in a slot in the handle 13 is threaded on the stud 35 to enable the point of connection between the handle lever 13 and toggle lever to be moved along the slot.
Patent GB-125511-A (GB)
Title: Improvements in or relating to Splints.
Inventor: WILLIAMS REGINALD
IPC: A61F5/058
Filed: 1919-04-17
Abstract: 125,511. Williams, R. April 17, 1918. Splints of the kind composed of longitudinallysliding members are constructed with members formed by loops of wire having parallel sides, and the members are connected to each other by nuts and bolts acting in conjunction with grooved wireengaging surfaces to lock the joints against rotation. As an example, the invention is shown applied to the construction of splint described in Specification 112,812, and comprises members A, B secured approximately at right-angles to one another by the bolts and nuts C. Two pairs of grooved wire-engaging surfaces D, D', Fig. 2, are provided either on the interior surfaces of the bolts or on interposed washers, so that the two members A, B may be clamped together at any angle. The arched members F, G are formed of wire loops similarly to the members A, B. If necessary, the splint could be stiffened by fitting a further looped member to act as a diagonal brace at the place indicated by the dotted line, Fig. 1. Metal bands forming cross braces may also be fixed between opposite members by twisting the ends round the wires of each member. A short piece of flattened metal tubing O may be used to stiffen any member at any necessary point. In some cases, the loops of wire forming the members are divided at one end to permit the member to be passed over a connecting-bolt while in situ. An arched bridge-piece somewhat similar to the member F may be interposed in line with and between the ends of two straight members such as B in cases where the splint must not contact with the body at certain points.
Patent GB-1259952-A (GB)
Title: Valves for controlling flow of fluid into a container
Inventor: PAVEY JOHN ANTHONY
IPC: B67C3/26
Filed: 1968-02-09
Abstract: 1,259,952. Bottling &c. NATIONAL RESEARCH DEVELOPMENT CORP. 7 Feb., 1969 [9 Feb., 1968], No. 6548/68. Heading B8T. [Also in Division F2] A valve for controlling the flow of fluid into a container 31 comprises a fluid chamber 50, a telescopic arrangement consisting of a spring 28, a stationary tube 8 and a movable member 22 whose internal surface forms a sliding and sealing fit with the external surface of the tube 8, the lower end of the member 22 engaging with a valve seat 21 on a stationary stem 10. The telescopic arrangement is mounted in a valve housing 5 and can be isolated from the surrounding atmosphere by a barrier 35 movable to engage with a seal 34. In operation the container 31 is held in a position below that shown in Fig. 1 and is steam sterilized whilst the barrier 35 is engaged with the seal 34 thus isolating the telescopic arrangement from the steam. Since the area of the member 22 facing upwardly is greater than the combined areas of member 22 facing downwardly when the members 22, 10 are in engagement, the resultant pressure on the member 22 maintains the said member in engagement with the stem 10. If during the sterilization process steam enters the housing 5 the resulting increase in pressure therein will increase the force urging the members 22, 10 together. After sterilization is completed the barrier 35 is removed and the container 31 is raised to the position shown in Fig. 1. Upward continued motion of the container raises valve face 25 off the seat 21 and the fluid in tube 8 flows into the container 31. If steam enters the valve housing 5 during the sterilization process, a visual indication is provided by an indicator arrangement 36. In another embodiment, Fig. 3 (not shown), the movable member (78) includes a sealing ring (84) whose displacement above the surface (76) of the stationary member permits the entrance of cleansing fluid throughout the valve assembly.
Patent GB-818305-A (GB)
Title: Method of preparing alkylpolysiloxanes
IPC: C08G77/00
Filed: 1956-03-02
Abstract: In making polysiloxanes by reacting, in the vapour phase, dialkyldihalogenosilanes with lower alkyl monohydric alcohols, the catalyst used is composed of silica gel and a zinc halide, preferably zinc chloride.  The catalyst may be made by mixing an aqueous solution of ZnCl2 with a silica gel, e.g. having a surface area of 100 to 850 m.2/g., a pore diameter of 10 to 100 Ängstrom units and a particle density of 1.20, and drying the resulting mixture, the amount of ZnCl2 ranging from 2 to 50 per cent by weight of the silica gel and ZnCl2.ALSO:Alkyl polysiloxanes are made by concurrently passing a dialkyldihalogenosilane and a lower alkyl monohydric alcohol, both in the vapour phase, in contact with a catalyst bed composed of a zinc halide and silica gel while maintaining the reaction temperature above 175 DEG  C. and below the decomposition point of the reactants and reaction products.  Alcohols specified are methanol, ethanol and propanol.  Silanes specified are dimethyldichloro, diethyldichloro-, dipropyldichloro- and dimethyldibromo-silanes.  The preferred proportions of reactants are from 2 to 3.5 mols. of alcohol per mol. of silane.  In the example, a mixture of vaporized dimethyldichlorosilane and methanol was passed through a reaction zone consisting of a glass tube containing a section packed with glass beads and a major section packed with silica gel impregnated with zinc chloride, and maintained at the desired temperature.  The exit reaction products were cooled with a water condenser and methylpolysiloxane was separated from the condensate.  Specification 575,667, [Group IV], and U.S.A. Specification 2,556,897 are referred to.
Patent GB-616814-A (GB)
Title: Hinge structure
IPC: E05D3/06
Filed: 1946-03-04
Abstract: 616,814. Hinges. HARTWELL, C., and HARTWELL, S., (trading as HARTWELL AVIATION SUPPLY CO.). 4, 1946, No. 6673. Convention date, March 6, 1945. [Class 65(ii)] A three-part hinge Structure comprising a central plate 1 and a pair of leaf.' plates 2 has bearings, for hinge pins 5, formed along confronting edges of the plates and arranged flush with one common side of their respective plates. A spring element anchored to the central plate urges the leaf plates from a position coplanar with the central plate to a position substantially at right angles thereto. As shown, the spring 9 bridges the central plate, is coiled on both hinge pins, and ends in arms 10 which bear against the leaf plates. The hinge bearings are formed with axially directed steps 11 and 12 engageable to limit the relative angular movement of the plates.
Patent GB-272448-A (GB)
IPC: H01F41/04
Filed: 1927-03-10
Abstract: 272,448. Dubilier Condenser Co. (1925), Ltd., (Assignees of Aktiebolaget Stern & Stern). June 9, 1926, [Convention date]. Inductances.-A toroidal coil is constructed so that the turns from a double layer winding on the inside of the toroid and a single layer winding on the outside, the alternate turns of a straight solenoid being given a smaller diameter and being dispensed to one side of the coil so that they bunch together with the larger turns on the other side of the coil. As shown the turns of a straight solenoid are located between combs 6, 7, which are pushed together to expand and contract alternate turns, the resulting coil having its smaller turns 1 displaced towards the outside of the toroid and located inside the larger turns 2 on the inner portion of the toroid. The inside layers are separated by a spacing-strip 3.