baber/WOPTO huggingface dataset:
Patent GB-251711-A (GB)
Title: Improvements in or relating to grabs and the like
IPC: B66C3/06
Filed: 1925-02-17
Abstract: 251,711. Sedgwick, C. H. Feb. 17, 1925. Grab-buckets.-Relates to grabs of the kind in which the lower pulley-block e moves between the grab-head d and the cross-beam b to which the buckets a are hinged, and the block e is connected to the cross-beam by latch mechanism which is engaged and disengaged automatically to permit the closing and opening of the buckets. The block e moves on a central telescopic guide comprising a rod j carried centrally on the grabhead, and two sleeves k, l attached respectively to the pulley-block e and the cross-beam b. A cylindrical latch-block h is attached to the sleeve l which is mounted in the cross-beam so as to be free to turn about its own axis. The latch-block h has wedge-surfaces i co-operating with rollers g on the pulley-block e. The pulley-block carries sheaves n arranged as shown in plan in Fig. 4 for the single hoisting and operating chain m. The latch-block h tends to turn to the position in which the wedges i will not engage the rollers g, under the action of a torsion spring s acting on the spindle o and bevel gears p. When the buckets open, the hinge pin a<1> which is secured to one of them turns the spindle o, through a oneway drive r, so as to bring the latch block h to the position shown and put the spring s under torsional strain. When the pulley-block e is then lowered, the rollers g engage the wedge-surfaces i, the block twisting on the telescopic guides until the rollers swing back under the wedges i which then lock the block to the cross-beam. On hauling in the chain, the buckets are closed, the hinge pin a<1> moving so that the drive r will not obstruct the action of the spring s in releasing the latch when the grab is again lowered to the ground or raised to engage with a suspended ring r. To open the grab by dumping, it is lowered to the ground and the chain slackened. When pressure between the parts g, i is relieved, the latch-piece h is turned by the spring s so that on hauling in the chain, the rollers g rise clear of the wedge i and the buckets are opened as far as is permitted by a stop on the cross-beam. To open the grab at the top of the lift. it is raised until the suspended ring v engages and depresses a rod u in the grab-head, acting on a slider t in the pulleyblock having a wedge-shaped end t<1> to engage and turn the latch-block. The chain m passes through a guiding sleeve m<1> having its mouth nearly in line with the pivots c<1> of the links c, so as to reduce the strains on the parts when the grab rests on the dump in an inclined position.
Patent GB-588483-A (GB)
Title: Improvements in or relating to flexible chains
IPC: F16G13/10
Filed: 1945-02-21
Abstract: 588,483. Hinges; chains. SILENTBLOC, Ltd., and TRIER, V. A. Feb. 21, 1945, No. 4397. [Classes 24 and 65 (ii)] [Also in Groups XXXII and XXXIV] A flexible chain comprises a series of links each consisting of two side plates E to one end of which is attached an inner part F and to the other end an outer tubular part J<2> ; the part J<2> has an annular part spherical inner surface J which surrounds an annular part spherical outer surface H on the part F and a bushing of rubber K is inserted between them and is caused to adhere to the surfaces by bonding or compression. The inner part F may be attached to the side plates E by a tubular pin G, the ends of which are expanded into chamfers G<1> and to prevent rotation of the part F on the pin each of the side plates may be pressed out as at G<2> to engage slots F<1>. The part F may be allowed to rotate on the pin G in which case the part F may be formed as an oil-less or self-lubricating bush made from a plastic material. The parts F and J<2> may be a force fit in holes in the side plates and may be additionally secured by expanding the ends of the members into chamfers or, according to the Provisional Specification, by welding.
Patent GB-770362-A (GB)
Title: Improvements in or relating to refrigerating apparatus
Inventor: MCCLOY GRAHAM STEVENS
IPC: F25D21/00
Filed: 1955-02-15
Abstract: 770,362. Refrigerating. WESTING- HOUSE ELECTRIC INTERNATIONAL CO. Feb. 15, 1955, No. 4459/55. Class 29 In a refrigerator having an evaporator supplied with refrigerant by a motor compressor unit 16 the current to which is controlled by a switch 22 actuated in response to the temperature of the evaporator 15, heat is supplied to the evaporator for defrosting after a cumulative period of time during which the door is open at the same time as the compressor motor is energized, defrosting only taking place while the compressor motor is running. As shown a defrosting electric heater 8 heats refrigerant entering the evaporator as described in Specification 620,951 and the supply of current to the heater is controlled by a switch 28 constructed as described in Specification 678,075. Switch 28 is closed at the expiry of the predetermined period of time by a timer 43 the driving motor of which is in series with both a switch 51 closed only when the door is open and the switch 22 controlling the compressor motor. Switch 28 is opened after defrosting by a bellows 48 actuated by a thermal bulb 50 responsive to the temperature of the suction pipe 20. The circuit is such that switch 28 cannot be moved to the closed position while the compressor motor is starting, save in exceptional circumstances, thus avoiding overloading of the supply current: Specification 568,337 also is referred to.
Patent GB-852715-A (GB)
Title: Improvements in reciprocating action pumps, in particular fuel injection pumps
IPC: F02M59/32
Filed: 1959-02-09
Abstract: 852,715. Fuel injection pumps. BESSIERE, P. E. Feb. 9, 1959, No. 4490/59. Class 102(1). A fuel injection pump comprises a reciprocating member 1, an inlet valve 33 and a delivery valve 4. The member 1 is preferably actuated hydraulically by the delivery from a piston 6, the end of the delivery stroke of the member 1 being determined by the opening of a by-pass conduit 35. The member 1 is moved on its suction stroke by the action of a spring 11, the force of the spring being opposed by the flow of a fluid from a pump 10 which is preferably driven at a speed proportional to the engine. The flow from the pump 10 discharges through a throttled passage 19 which is also varied with the speed of the engine, the valve 17 determining the throttled passage being acted upon by the delivery of a pump 22 also driven at engine speed. The end of the return stroke of the member 1 is thus achieved when the force due to the spring 11 is equal to the force produced by the pressure in the chamber 2a and the stroke of the member 1 is thereby decreased as the speed of the engine increases above a predetermined value. The inlet valve 33 and valves 27, 28 controlling the flow from pump 10 to and from the chamber 2a are all closed during the delivery stroke of the member 1 by the delivery of a second piston 29 moving with the piston 6. The pump 10 may supply the fluid to the cylinder 9 for the piston 6 or a separate inlet 13 and non-return valve 14 may be provided. In a modification the pump 10 may provide fuel to the delivery chamber 2b instead of the chamber 2a and the spring 11 is then housed in the chamber 2a. In this case the throttle 19 is arranged to increase with increase speed of the engine as in Fig. 2 (not shown).
Patent GB-545650-A (GB)
Title: Improvements relating to centrifugal sand blasting machines
IPC: B24C5/06
Filed: 1941-04-04
Abstract: 545,650. Sand-blast. TILGHAM'S PATENT SAND BLAST CO., Ltd., and ANKERS, R. T. April 4, 1941, Nos. 4533 and 10308. [Class 60] [Also in Group XXVI] In a centrifugal sandblasting machine, each impeller-blade c is formed on the inactive side with a rib e having a coned recess f for engaging the coned head h of a securing- screw which is threaded into the side plate a. To permit of reversing the blade, a rib e may be provided at each end. The blades are received by slots in the side plates, and preferably abut on renewable strips. The active face of each blade may be formed with a smooth, uniform or tapered hollow.
Patent GB-843296-A (GB)
Title: Improvements in or relating to fire detectors
IPC: G08B17/11
Filed: 1958-02-12
Abstract: 843,296. Smoke detectors. MINERVA DETECTOR CO. Ltd., and RADFORD, A. S. Feb. 12, 1959 [Feb. 12, 1958], No. 4589/58. Class 40(3). [Also in Group XXXVI]  A smoke detector comprises a capacitor, a low potential source, a transistor circuit for charging the capacitor from the source to a higher voltage than that of the source and a smoke detector which when smoke is detected permits the capacitor to discharge and operate an alarm or safety appliance. As shown, the ower one of two ionization gauges 2,3 operating on the principle described in Specification 536,594 is subject to the atmosphere in the region where the smoke is to be detected. The gauges together with a gas discharge tube 9 are arranged as a plug-in unit with pins 13, 14, 15 adapted to fit in sockets 13a, 14a and 15a respectively, and when smoke is present the resistance of the gauge rises causing the gas tube to fire. This causes a capacitor 21 to discharge and operate a relay 17 having an alarm contact 17a and a holding contact 17b. The operating voltage for the circuit is derived from a low voltage source 24 by a transistor oscillator and rectifier circuit. Preferably the oscillator is of the type which returns excess energy in the generated oscillations to the low voltage source. A manual switch 16 may be opened to test the circuit and a further manual switch 22 releases the alarm and restores the circuit to normal. Contacts of the relay may operate a ventilator fan, or release fire extinguishing means or cut-off the power to equipment protected by the detector.
Patent GB-785719-A (GB)
Title: An improved method for adding ferrosilicon while simultaneously desulphurizing or deoxidizing a molten metal or alloy
IPC: C21C1/02
Filed: 1955-02-16
Abstract: Molten metals such as iron and steel and alloys are desulphurized and deoxidized while their silicon content is simultaneously raised by means of briquettes to be submerged in the melts, the briquettes containing ferro-silicon as a major constituent and calcium oxide in the form of burnt lime, calcium carbonate or dolomite.  The excess of silicon in the briquettes serves to increase the reactivity of the briquettes and, by dissolving in the melt, to increase its silicon content.  A small amount of magnesium may also be incorporated in the briquette. The briquettes may be formed under pressure without a bonding agent or, alternatively bonding agents may be used such as crystal soda or the distillation residues of vegetable oils. Specifications 764,157 and 785,551 are referred to.
Patent GB-725314-A (GB)
Title: Improvements in or relating to continuous casting plant
IPC: B22D11/08
Filed: 1953-02-19
Abstract: 725,314. Continuous-casting machines. BOHLER & CO. AKT.-GES., GEB. Feb. 19, 1953 [Feb. 20, 1952], No. 4658/53. Class 83 (1). In continuous casting plant a socket or container is provided for collecting the detached lowering pipe after its use for starting the withdrawal movement of the ingot. The container 3 is bent at its upper end, which is first positioned in alignment with the lowering pipe 1, and swings about a pivot 6 at the lower end. A pivoted rod 5, securing the upper end of the container, is attached to the inside wall 7 of the casting pit offset with respect to the pivot point so that when the lowering pipe falls into the container the latter swings aside clear of the vertical path of the ingot.
Patent GB-972021-A (GB)
Title: Short-circuiting device for high and very high voltages
IPC: H02H3/02
Filed: 1962-02-06
Abstract: 972,021. Conducting fluid switches; protective arrangements. J. RICHTR, J. CERKL, and V. JELINEK. Feb. 6, 1962, No. 4683/62. Headings H2B and H2K. A high-voltage short-circuiting device 12 comprises an earthed electrode 5, Fig. 3, an insulating member 7, a pressure-resisting chamber 1, and a replaceable cartridge 8 sealed by a foil 3 and containing an electric ignition fuse 4 and an explosive charge 2 to which a substance promoting ionization is added. When the charge is ignited, the ionized jet passing through the electrode 5 provides a conducting path between the electrode 5 and a high voltage electrode 6. The substance added to the charge 2 may be metallic filings. Fig. 2 shows an arrangement in which a transformer 13 is supplied through an isolator 10 and a fuse 11. In the event of a transformer fault, protective gear associated with the transformer energizes the fuse 4 of a device 12 which establishes a short circuit to earth so causing the fuse 11 to blow and interrupt the supply to the transformer. Alternatively, the supply may be interrupted by a circuit-breaker. Fig. 1 (not shown). The Specification also refers to the use of the device in providing a short duration earth on a disconnected line in a system having single-pole reclosure, and to its use in short-circuit testing.
Patent GB-740213-A (GB)
Title: Improvements in or relating to buckles
IPC: A44B11/24
Filed: 1954-02-17
Abstract: 740,213. Attaching buckles to belts. EMOND AKTIEBOLAG, C. Feb. 17, 1954 [Feb. 20, 1953], No. 4684/54. Class 43. [Also in Group XXV] A belt buckle is attached to the non-adjustable end of a belt by a clamping device consisting of two pivotally-connected plates 10, 11 of which the latter is formed with open hooks 16 at one edge to engage the inner end of a buckle frame 17 and at the opposite end has upturned lugs 13 for attachment of the keeper plate 10 by a pivot pin 12, the adjacent edge of the plate 10 being formed with a serrated flange 14 whereby the end of a strap inserted beneath it is gripped when the plate 10 is swung downwardly towards plate 11, in which position the keeper plate prevents the buckle frame from being moved out of the hooks 16. In the example, the outer edge of the keeper plate 10 is formed with a pair of lugs 21 projecting from it at right-angles so that they interengage with a pair of slots 20 provided in the hooks 16; alternatively a rightangled flange may be provided along the outer edge of the plate 10 and arranged to close the exit of the hooks when the plate is folded downwardly. The tongue 18 of the buckle, pivotally mounted on the inner bar of the buckle frame, is located in the gap 15 between the hooks 16.
Patent GB-864551-A (GB)
Title: Purification of dehydroacetic acid
Inventor: CRAVEN ERNEST CECIL
IPC: C07D/
Filed: 1959-02-11
Abstract: Dehydroacetic acid is purified by melting the acid, contacting the molten acid with a mixture of an inert gas and the vapour of an aromatic hydrocarbon, and cooling the resultant mixture of inert gas, hydrocarbon vapour and vapourised dehydroacetic acid to form a solution of dehydroacetic acid in the aromatic hydrocarbon.  If desired, the purified dehydroacetic acid is recovered from the solution, preferably by adjusting the proportions of acid and solvent such that the purified acid separates on cooling.  The inert gas and/or recovered hydrocarbon solvent may be recycled.
Patent GB-1461214-A (GB)
Title: Electrochemical cell
IPC: H01M50/119
Filed: 1975-02-04
Abstract: 1461214 Primary cells SAFT-SOC DES ACCUMULATEURS FIXES ET DE TRACTION 4 Feb 1975 [8 Feb 1974] 4787/75 Heading H1B A cell comprises negative active material 5 consisting of an alkaline metal, positive active material 6 of silver chromate, a cup 2 forming the negative terminal of the cell and a cup 3 forming the positive terminal of the cell, the cup 3 being made of stainless steel containing at least 11% by weight of chromium. The material 5 consists of a lithium disc and the material 6 is a mixture of silver chromate and carbon black. A separator comprises a part 7 of paper and a part 8 of spongy cotton which bears the electrolyte formed by a molar solution of lithium perchlorate in propylene carbonate. A polypropylene sealing ring 4 insulates the cups 2, 3 and the cup 3 may include nickel.
Patent GB-332253-A (GB)
Title: Improvements in coin-testing devices for use in coin-freed apparatus and the like
IPC: G07D5/10
Filed: 1929-02-13
Abstract: 332,253. Monheim, H. Feb. 13, 1929. Testing edge for milling.-Relates to a coin tester for coinfreed apparatus in which a member 7 having a serrated edge 8 is placed in the path of the coin and is lifted and rotated to allow the coin to pass, an abutment preventing the lifting of the member unless it is rotated by a milled-edged coin. A slot 6 in the member engaging a pin 5 allows the rotary and lifting movements. According to the invention, the abutment 11 is adjustable so that the sensitiveness of the device can be regulated. The abut. ment is attached to a lug by a single screw to allow the adjustment.
Patent GB-163468-A (GB)
Title: Improvements in the manufacture of plaster of paris
IPC: C04B11/028
Filed: 1920-02-18
Abstract: 163,468. Brothers, W. M. Feb. 18, 1920. Calcium sulphate.-Consists in the manufacture of plaster of paris in a continuous manner by feeding powdered gypsum or old plaster moulds through a closed vessel under pressure, in the presence of dry steam at 380-420‹ F., generated only from the raw material itself. Using the apparatus shown in Fig. 1, the dry, powdered, or granular material is fed continuously into the retort A through the rotary valve C and is conveyed to the discharge valve C<1> by screw D. Fig. 2 indicates another form of retort, which is raised to the necessary temperature by means of steam under pressure. Steam entering at H passes through the closed system of pipes G which, being mounted on the circular plates g provided with trunnions, can be rotated. The material is conveyed through the retort by means of the vanes d arranged spirally round the steam-pipes. Specifications 5853/04 and 20789/12 are referred to.
Patent GB-1074723-A (GB)
Title: Improvements in electrode air humidifiers
IPC: F24F6/02
Filed: 1966-02-04
Abstract: An air humidifier comprising a vessel containing water and electrodes which during use are supplied with electricity to evaporate the water, the electrodes being carried by a lid screwed on to the neck of the vessel and provided with electrical contacts so that the current is switched off when the lid is removed and vice versa.
Patent GB-730183-A (GB)
Title: Improvements in or relating to anchoring devices, primarily for securing cargo in position in a moving vehicle
Inventor: HUBER JOHN RICHARD
IPC: B61D45/00
Filed: 1952-02-26
Abstract: 730,183. Turnbuckles. EASTERN ROTORCRAFT CORPORATION. Feb. 26, 1952, No. 4994/52. Class 45. [Also in Groups XXV and XXX] An anchoring device primarily for securing cargo in position in a moving vehicle, includes adjustable cable tensioning means 34, a frame comprising a rigidly connected snubbing spool 19, a member 22 attached to the frame and positioned to engage the cable 15 before it passes around the spool, means, 25, 27 connected to the frame for clamping the cable after it passes around the spool and interconnecting linkage 32 between the cable engaging member and the clamping device for increasing the clamping action upon increase of tension in the cable. The snubbing spool 19 is rivetted between two frame plates 18, and the cable passes between a pair of blocks 21 rivetted between the plates and the member 22 which is arc shaped, then one and a half times around the spool 19 and then the end is gripped between the clamping means 25, 27. The member 22 is pivotally mounted between the plates 18 and is moved to engage the cable so that it is gripped between itself and the blocks 21, by means of the linkage 32 which comprises a cam. The linkage 32 is moved by a handle 30, the end 31 of which is attached to and acts as a pivot pin for the linkage 32. The holes in the side plates 18 for the end 31 are elongated so that the linkage 32 can move laterally of the side plates as well as pivot. The clamp 25 is rivetted between the plates 18 and the clamp 27 is mounted on a pin 28 which engages elongated holes in the side plates 18 so that this clamp can move laterally of the side plates. The clamp 27 is also moved by part of the linkage 32 to cause it to grip the cable and between itself and the clamp 26. Since both the linkage 32 and clamp 27 can move laterally any increase in tension in the cable causes the member 22 to pivot slightly. This movement causes the linkage-32 and hence the clamp 27 to move laterally and the cable is gripped more tightly between the clamps 26, 27. The members 21 22, 26, 27, and the spool 19 all have grooves for the cable. The spool 19 has two grooves which are parallel to each other. The grooves are eccentric with respect to the spool axis so that they are shallower at the top where the cable crosses from one groove to another. The tensioning means 34 is formed as a hook for attaching the device to an eye bolt, this hook is slidably mounted between the plates 18 by means of bolts 42 which enter a slot 37 on the hook. It is adjusted in position by means of a collar 44 which is rotatably but non slidably mounted on shouldered members which are secured to the plates 18 by the bolts 42. An internal 38 screw thread on the collar engages threaded edges on the hook.
Patent GB-1009477-A (GB)
Title: Novel process for preparing heterocyclic compounds
IPC: C07D475/06
Filed: 1963-02-07
Abstract: In a process for the preparation of heterocyclic compounds of the structure <FORM:1009477/C2/1> in which R is an unsubstituted or substituted alkyl or aryl group having a maximum of 12 carbon atoms, C1-8 alkoxy, phenoxy or carbamyl, and X together with the two carbon atoms to which it is attached represents an optionally substituted phenyl, naphthyl, pyrimido, pyrazolo or pyrido ring, an o-nitrosoamine of the structure <FORM:1009477/C2/2> is reacted with an acylmethylene compound of the structure R1COCH(Y)R in which R1 is aryl, alkyl, carboalkoxy or alkoxy, each having a maximum of 8 carbon atoms, and (1) when R is defined as above and Y is cyano, in the presence of a basic condensing agent; (2) when R is defined as above and Y is pyridinium or substituted pyridinium, in the presence of cyanide ions; and (3) when R is aryl or carbamyl and Y is hydrogen, in the presence of cyanide ions, the said process being further characterized by the concurrent elimination of an acyl radical R1CO- during the reaction.  The ring X may be substituted by an unreactive radical such as hydroxyl, amino, alkylamino, dialkylamino, alkylthio, alkoxy, heterocyclic amino alkyl, phenyl and thienyl.  R1 includes phenyl, nitrophenyl trifluoromethylphenyl, halophenyl within the meaning of "aryl."  a -Benzoylcyclohexylacetonitrile is prepared from ethyl benzoate and cyclohexylacetonitrile. Similarly is prepared a -benzoyl-4-(N-piperidino)-butyrontrile. Propiophenone-a -pyridinium bromide is prepared from the halide and pyridine.