baber/WOPTO huggingface dataset:
Patent GB-424994-A (GB)
Title: Improvements in controlling the speed of electric motors, particularly lift driving motors
IPC: B66B1/08
Filed: 1934-02-20
Abstract: 424,994. Master control of A.C. and D.C. motors. HAMMOND, E. N., 26, Fordhook Avenue, Ealing Common, London. Feb. 20, 1934, No. 5602. [Class 38 (iii)] An alternating or direct-current motor, e.g. for lifts or cranes, is controlled by resistance 26 in the secondary or armature circuit, and an eddy-current brake 15, means 27 being provided for short-circuiting resistance in the secondary or armature circuit in response to the starting current exceeding a predetermined value, and for maintaining the shortcircuit until the motor is stopped. Upon operation of a direction controlling switch A, one of the up and down contactors 8, 9, is operated to connect the motor to the supply. The circuit for the field of the eddy-current brake is opened by the energization of an electromagnetic switch 17 which also completes a circuit for a rotor contactor 20 which cuts out part of the secondary circuit resistance 26 after a time interval, and thereupon energizes a second rotor contactor 21 which cuts out the whole of the resistance 26. If the lift driven by the motor is heavily loaded when going up, or lightly loaded when coming down, and the motor does not start until the contactor 20 has closed, a relay 5 carrying the primary current is sufficiently energized by the heavy starting current to close its contacts and energizes a self-maintaining auxiliary motor contactor 27, the contacts of which are connected in parallel with those of the contactor 20. The auxiliary contactor 27 maintains the short-circuit of the first step of secondary resistance until the motor is stopped. When a switch 16 is opened the contactors 20, 21, open, and the switch 17 is de-energized to complete the eddy-current brake circuit and exclude resistance 18 therefrom in steps.
Patent GB-658614-A (GB)
Title: Air cooled heat exchanger
IPC: F28B1/06
Filed: 1948-02-25
Abstract: 658,614. Tubular heat-exchangers; surface condensers. AMERICAN LOCOMOTIVE CO. Feb. 25, 1948, No. 5630. Convention date, July 25, 1944. [Class 64(iii)] Air is induced by a fan 12 over transversely finned tubes disposed in an open framework 2 thereby cooling or condensing the fluid flowing through the tubes, the tubes being arranged in banks with conduits leading therefrom to inlet and outlet headers, the framework having a top wall 6 provided with a duct 8 containing the fan and side walls 29, 31 so dimensioned as to leave the framework open at its bottom portion to admit the air induced by the ian. The apparatus shown in Fig. 3 may comprise four banks 17 of tubes, Fig. 4, in which each bank includes five sinuous tubes 22 each provided with square fins 23 and connected to inlet and outlet headers 24, 26 from which pipes 25, 27 lead respectively to the main headers 18, 19. Alternatively the tube assembly may comprise twelve banks of straight finned tubes 35, Fig. 7, the banks being arranged in opposed pairs, and each bank having an inlet header and an outlet header respectively connected to the main headers 38, 39. In this form the tubes may be of elongated cross-section.
Patent GB-374062-A (GB)
Title: Improvements in or relating to electric hammers
IPC: H02K33/10
Filed: 1931-02-23
Abstract: 374,062. Electric hammers. MœLLER, C., 30 Liebigstrasse, Hanover, Germany. Feb. 23, 1931, No. 5666. [Class 124.] An electromagneticallyoperated hammer having a spring-returned core has the winding circuit closed throughout the working stroke by sliding contacts moved by the reciprocating core. In the form shown, the coil h is connected to the supply through the guide bars a, a1, sliding contacts b, b1, and the conducting disc d which is attached to but insulated from the core f. When the core strikes the tool l, the grooved contacts b, b1 are carried by momentum sufficiently past the disc d to break the circuit, and they are returned by the engagement of an insulating disc c mounted on the core with the upper edges of the recesses in the contacts b, b1. The switch e is closed before the first stroke and a condenser may be provided to minimize sparking.
Patent GB-736884-A (GB)
Title: Improvements in motor vehicles having two rear driving axles
IPC: B60K17/36
Filed: 1953-03-02
Abstract: 736,884. Motor vehicle driving gear. LABEGUERIE, A. March 2, 1953 [March 6, 1952], No. 5726/53. Classes 79(2) and 79(4). In a motor vehicle having two rear driving axles of the type in which each axle is driven by a distinct shaft and the shaft for driving the hindmost rear axle is supported in an intermediate bearing housing mounted on the foremost rear axle casing, the said housing encloses a declutching device for the drive to the hindmost rear axle. The driving shaft c, Fig. 1, for the rearmost axle b, is offset to one side of the driving shaft c, of the foremost axle a, and includes two cordan joints b 1 , b 2 . A ball-bearing housing, Fig. 2, mounted on the foremost axle a in place of the customary intermediate bearing for the driving shaft c, is located between the joints b 1 , b 2  and encloses two aligned shafts d, e, each connected with one joint. Slidable on the shaft e is a pinion f which can engage internal teeth on a wheel g integral with the shaft d. The pinion f is moved into and out of engagement with the wheel g by a fork h secured to a plate h 1  slidable in guides h 1 . The plate h is movable by a lever i operated by a cable i 1  against the action of a spring f which tends to disengage the clutch device f, g. Radius links connect the two axle casings to a non-rotatable sleeve cs enclosing a shaft c2 which connects the cordon joint b 2  to the bevel gear in the rear axle b.
Patent GB-560283-A (GB)
Title: Improvements in or relating to spreaders for fertilisers and the like
IPC: A01C17/00
Filed: 1943-04-09
Abstract: 560,283. Distributing fertilizers &c. JOHNSON, H. C. April 9, 1943, No. 5743. [Class6(i)] Fertilizers and like material are thrown, preferably laterally, from 'the distributing vehicle. As shown, lime from a hopper 2 falls on to rising rotating vanes 3 and is discharged through an aperture 16 in the wall of the casing 14. The opening 4 is adjusted by varying the position of the hopper base 5, the desired adjustment being maintained by the engagement of wing-nuts 7 with brackets 10. An overhanging part 17 with nuts 18 permits attachment to the side of a vehicle. A brush may be mounted above the opening 4. The shaft 13 is driven from the vehicle motor. For the hopper 2 a conveyer belt, mounted in the base of the vehicle, may be substituted.
Patent GB-859236-A (GB)
Title: Improvements in or relating to raking implements
IPC: A01D78/00
Filed: 1957-02-20
Abstract: 859,236. Haymaking machinery. VAN DER LELY N.V., C. Feb. 20, 1957 [March 9, 1956], No. 5765/57. Class 6(3). In a raking device of the kind comprising rake wheels mounted in echelon formation obliquely to the direction of travel of the device, lifting means are provided for raising all the rake wheels simultaneously from the ground for transport purposes, by turning them about a horizontal axis set at an angle to the axes of rotation of the rake wheels. One construction of raking device in which the invention is embodied is described in Specification 859,235, or alternatively the device may be as illustrated in Figs. 5 and 6. The rake wheels 124-127 are mounted in pairs on shafts 118 and 119 rotatably mounted in sleeves 116 and 117 carried by arms 114, 115 which are slidable in a hollow horizontal beam 113. The beam 113 is supported by a forwardly extending shaft 112 mounted for rotation in a tube 110 which is connected to a tractor 81 so as to be adjustable about a vertical axis relative to the direction of travel of the device. Thus by turning the shaft 112 through 180 degrees relative to the tube 110 the device can be adapted to operate as a tedder, and if, in addition, the shafts 118 and 119 are rotated through 180 degrees in the sleeves 116, 117 the device will operate as a swath turner. The tube 110 is also rotatable about the horizontal axis defined by the stub shafts 97 and 98, by operation of the lifting mechanism illustrated in Fig. 6. The mechanism comprises a cranked handle 143 mounted on the draw bar 89 of the device, and provided at its end 142 with a screw thread to co-operate with an internally threaded sleeve 145 pivotally mounted between rods 100 and 101 which form part of the means of connection between the rake and the tractor a tension spring 130 extending between an eye on the rod 100 and an apertured strip 128 on the tube 110. Thus by turning the handle 143, the distance between the points 102 and 138 is varied, thereby pivoting the tube 110 about the above horizontal axis and raising or lowering the rake wheels. The movement is controlled by a second spring 134. Specification 859,237 also is referred to.
Patent GB-468718-A (GB)
Title: Improvements in pumps, engines, and the like
IPC: F01C1/39
Filed: 1936-02-27
Abstract: 468,718. Rotary pumps. SAVAGE, L. G. Feb. 27, 1936, Nos. 5826 and 12972. [Class 110 (ii)] The pump comprises a series of vanes hinged equidistantly at their outer ends to a casing or liner, their inner ends being mounted on, or controlled by a crank. In the form shown in Fig. 1, the vanes 2 are hinged by pins 3 to a fixed casing 1, and at their inner ends pivoted to vanes 4 by pins 5. The vanes 4 have bearings 6 on a crank-pin 8. Inlet ports 11 are provided in the end covers and are periodically covered by the ends of the vanes. Delivery ports have non-return valves 10 leading to a common chamber 14. The crank C may be rotated in an anti-clockwise direction and the casing ports 10 suitably modified become the inlet ports. The casing may be subdivided axially and in the two units the cranks arranged 180‹ out of phase for balancing purposes. The crank may be fixed and the casing revolve within an outer casing. A sleeve fixed to the crank or geared thereto may be provided for controlling inlet and outlet ports in the peripheral wall of the casing. A sleeve may be placed around the casing having a port to co-operate with the delivery port. By rotating the sleeve, the delivery may be delayed until. higher compression has been reached. Figs. 3 and 4 show another arrangement in which vanes 32 are mounted on spindles 33 having bosses 34 mounted in pockets in the casing. The spindles 33 project through a wall 36 and are coupled to arms 37. These arms carry pins 39 and rollers 43 which engage in an eccentric groove 40 in a disc 41 formed on the drive shaft 42. A crank-pin may replace the eccentric groove mechanism. An inlet port 44 and outlets 45 are provided. The vanes co-operate with one another to close spaces S and force the fluid being pumped through the adjacent outlet port. The disc may be placed inside the pump chamber. In this case the pins 39 will be placed on the end faces of the vanes.
Patent GB-998585-A (GB)
Title: Apparatus and process for reacting phosphate rock with sulphuric acid
Inventor: WEBER WILLIAM CHAMBERS
IPC: C01B25/22
Filed: 1961-02-17
Abstract: <PICT:0998585/C1/1> <PICT:0998585/C1/2> Phosphoric acid is prepared by reacting phosphate rock with sulphuric acid, the reactants being separately introduced into an annular reaction vessel provided with agitators, the reaction mixture overflowing to a central compartment. A unidirectional flow pattern is established in said outer compartment, around said inner compartment from said first agitation zone to said final agitation zone of said outer compartment.  The vessel is preferably enclosed and partially filled with phosphoric acid, and agitators rotate in the same direction.  A screw conveyer 21 introduces phosphate rock particles into the vortex of the agitator 12, and H2SO4 is introduced between agitators 13 and 14. The acid flows to a mixing unit 22 through conduit 23 and discharges in a form diluted by wash liquor which can come from a later stage of the process.  A suction pump 27 withdraws liquid from the inner compartment to filters, the filtrate being H3PO4.  Agitator 32 is provided, and cooling air is blown into manifold 33 from fan 34 and directed on to or just below the liquid surface.  The vessel is kept at slight negative pressure.  Slurry may be recirculated via opening 20 in baffle 19. In a modification the inner compartment may be full and overflow discharged via a conduit to a tank, and the slurry passes from the outer compartment to the inner at the foot of the wall. Alternatively the recirculation may be controlled by a variable speed flow impeller in a fixed opening of the baffle 1 or by a constant speed impeller operated in conjunction with an adjustable overflow weir, the effective height of which is adjusted by an external screw jack.
Patent GB-312391-A (GB)
Title: Improvements in or relating to furnaces
IPC: F23D99/00
Filed: 1928-02-25
Abstract: 312,391. Smallwood, A., and Fallon, J. Feb. 25, 1928. Metal-heating furnaces; muffle furnaces.-A furnace employing a recuperator for heating air for combustion is arranged so that at starting the heating-up of the working chamber is accelerated. For this purpose the hot gases leaving the working chamber, through outlets b at one end, are directed upwardly to a passage e over the crown, while on attainment of the working temperature they are directed downwardly to bottom flues f passing beneath the recuperators and thence by a flue i to the chimney. The flues e and i terminate in a two-ported chimney outlet the ports of which are controlled respectively by two dampers g, h. The recuperators consist of flat boxes n fitted with baffles and delivering heated air to spaces p below the combustion chambers k and communicating therewith by ports q. Ports s deliver the hot gases into, or in the case of a muffle, around, the working chamber,
Patent GB-659634-A (GB)
Title: Improvements relating to operating mechanisms for barriers at railway crossings and the like
IPC: B61L29/24
Filed: 1949-03-04
Abstract: 659,634. Gate-operating appliances. WESTINGHOUSE BRAKE & SIGNAL CO., Ltd., and KERSHAW, N. G. March 4, 1949, No. 5918. '[Class 65(i)] in operating mechanism for a barrier rotatable about a horizontal axis and operable by a weight carried by the barrier, and in which the weight is so displaceable that the moment exerted by the weight about the axis of rotation is continuously neutralised by the barrier, a conterweight 7 is rotatably mounted on a barrier pole 1, and an operating member 6 is rotatably mounted on a fixed support independent of the barrier and is mechanically coupled to the weight in such a manner that rotation of the operating member causes rotation of the weight. The barrier pole is secured to a channel 3 pivotally mounted on a shaft 4 rotatable in bearings carried by a fixed post (not shown) at a suitable height above the ground level. The operating member 6, which is in the form of a wheel secured to the shaft 4, is rotatable by means of a rope drive from a signal box. A linkage 14, 15 and gearing 11, 12 couples the wheel to a shaft 9 pivotally mounted on the channel. Secured to the shaft 9 is an arm 8 carrying the weight 7, the arrangement being such that the weight balances the barrier when the arm is vertical. When the barrier is horizontal the arm is approximately 60 degrees from the vertical and the linkage is at a dead centre position. Rotation of the wheel carries the arm beyond the vertical position, when the weight overbalances the barrier, but consequent upward movement of the latter tends to restore the arm to the vertical position. The wheel is rotated till the barrier is fully raised, the linkage then occupying the opposite dead centre position to hold the barrier thus. Movement of the barrier is checked by a pair of dashpots 18 pivotally mounted on the channel 3 and connected opposedly to a central arm 19.
Patent GB-411243-A (GB)
Title: Improvements in or relating to draughting machines of the parallelogram type
IPC: B43L13/06
Filed: 1933-02-28
Abstract: 411,243. Draughting-machines. GRAF, V., 8, Stadtlohnerstrasse, Munich, Germany. Feb. 28, 1933, No. 5996. [Class 97 (iii).] The weights of both the upper and lower guide arms of a draughting-machine of the parallelogram linkage type are compensated by a single spring or by a number of springs arranged so that the ratio in which their action upon the arms is distributed is the same for each spring. Alteration in the inclination of the drawing board and straining of the springs may then be compensated by a single adjusting device. In the form shown, a spring c is attached at one end to the support d, to which the upper parallel links A are pivoted, and at the other end to cable e. The latter passes round a pulley f rotatably mounted on the coupling ring g and is attached through an adjusting device to a pin i on the bridge k of the lower parallel links B. The adjusting device may comprise a rack h adapted to engage the pin i with any one of its teeth. The cable e may be fixed to the lower link B instead of the bridge k. In a modification the spring c may be replaced by two parallel springs, not necessarily similar, the cable e being attached to a plate connected by the springs to a second plate pivoted to the support d. A rough adjustment can be made in this case by removing one of the springs. In a further modification the cable e instead of being continuous is divided into two lengths and the pulley f replaced by a pulley having two parts of different diameter. The ends of the cables are fixed to the pulley at different distances from its axle and the remaining ends are attached each through a spring to the support d and bridge k respectively.
Patent GB-681211-A (GB)
Title: Improvements in the production of alkyl aryl sulphonates
IPC: C07C309/28
Filed: 1950-03-09
Abstract: A process for the production of alkyl aryl sulphonates by chlorinating aliphatic paraffinic hydrocarbons containing 9 to 18 carbon atoms in the molecule, reacting the chloro-hydrocarbons with aromatic hydrocarbons in the presence of anhydrous aluminium chloride or other catalysts active in the Friedel-Crafts reaction, sulphonating the alkylated aromatic hydrocarbons thus formed and neutralizing the sulphonation product comprises the steps of chlorinating aliphatic paraffinic hydrocarbons containing the same number of carbon atoms per molecule, separating from the chlorination mixture thus formed the monochlorides from the dichlorides and polychlorides, reacting only the monochlorides with aromatic hydrocarbons, separating by distillation the monoalkyl derivatives of the aromatic hydrocarbons thus formed from the dialkyl and polyalkyl derivatives of the aromatic hydrocarbons and sulphonating only the monoalkyl derivatives. Benzene, toluene and xylene are specified as aromatic hydrocarbons.  Preferred aliphatic paraffinic hydrocarbons are those obtained by catalytic hydrogenation of carbon monoxide. They are preferably chlorinated in a continuous process in individual vessels connected in series with equal amounts of chlorine passed into each vessel.  Preferably chlorination is effected so that only 0.2 gm. atoms of chlorine per mole. of hydrocarbon are introduced. In examples, the aromatic hydrocarbon employed is benzene; the aliphatic hydrocarbon is in (1) a C12 fraction formed by hydrogenation of an unsaturated C12 fraction distilled from the hydrocarbon mixture resulting when carbon monoxide is hydrogenated using a cobalt catalyst at 190 DEG  to 195 DEG  C.  In (2) a C10 paraffinic hydrocarbon is used.  For comparison, there is described a process of alkylating benzene with a product obtained by chlorinating a mixture of C10 to C14 paraffinic hydrocarbons (from carbon monoxide and hydrogen) to introduce one gm. atom of chlorine per mole of hydrocarbon, and then sulphonating the alkylation product.
Patent GB-525584-A (GB)
Title: Improvements in or relating to means for electrically heating pipe-lines
IPC: H05B6/02
Filed: 1939-02-23
Abstract: 525,584. Heating pipes by electromagnetic induction. DU PONT DE NEMOURS & CO., E. I. Feb. 23, 1939, No. 6070. Convention date, Feb. 23, 1938. [Class 39 (iii)] The pipe 1, which is made of non-magnetic material, has, disposed about its periphery, a series of rods 2 which are made of magnetic material such as iron. The rods are maintained in a fixed position on the pipe, and in close contact therewith, by means of bolted clamps 3. A sheath 4 of heatinsulating material surrounds the pipe, and a winding 5 is coiled about the said sheath.
Patent GB-752116-A (GB)
Title: Melt-spinning
IPC: B29C48/05
Filed: 1954-03-02
Abstract: Apparatus for extrusion of thermoplastic materials comprises a heated jacket through which the material is fed by a rotatable screw into an extrusion chamber, the rotatable screw being positioned in a predetermined working position and being resiliently urged into such position and towards the extrusion chamber.  The screw is preferably tapered towards the extrusion chamber and is urged by adjustable spring means.  The material may be fed to the heated jacket from a vessel having means for agitating and feeding the material to the jacket and in which a vacuum duct opens beneath the surface of the comminuted material, to remove water and occluded gases.  As shown, comminuted thermoplastic material is fed from hopper 10 under a vertically adjustable gate 12 to cylindrical vessel 16.  In the vessel 16 the material is agitated by rotating wire frame 81, fixed to rotating shaft 41, and the material is also lifted and dropped continuously by three helical blades 86, 86a, 86b.  Adjacent the upper <PICT:0752116/IV(a)/1> end of each blade is a radial duct communicating with a pipe 76 connected to an air pump, whereby removal of moisture and occluded gases is effected.  The material is fed downwardly by screw 19 on driven shaft 41, past the spreader 28 and sand filter 29 to spinneret 31, the material being melted by heater coils 24, 32, heated electrically or by circulating hot fluid. The lower portion of screw 19 is preferably tapered, the inner surface of jacket 21 being tapered to match, whereby the material is compressed.  The tendency for screw 19 and hence shaft 41 to rise under heavy feeding pressure is resisted by spring 51, one end of which abuts against collar 52 fixed to the shaft, and the other end of which abuts against thrust bearing 54, the top of which presses against stationary cap 55, threaded into fixed sleeve 57. By screwing cap 55 in or out, the spring pressure on feed screw 19 may be adjusted.  The conical portion of feed screw 19 is kept just clear of its conical seat by limiting the downward movement of shaft 41 through thrust bearing 61 which rests on fixed sleeve 57, whose vertical position can be adjusted by shims 62.  Small vertical movements of shaft 41 are accommodated without affecting the drive by providing gears 66 and 67 on the driving shaft and shaft 41 and embracing the two gears with an internally toothed annular gear 72.
Patent GB-765760-A (GB)
Title: Conveying unit
IPC: A23G1/26
Filed: 1955-03-02
Abstract: 765,760. Endless conveyers. MOLLER, R. March 2, 1955, No. 6120/55. Class 78 (1). [Also in Group XIII] Goods undergoing long-term treatment are carried on a plurality of carrier plates 21 secured to and extending laterally from an endless chain guided in a spiral path by a plurality of sprocket-wheels 2, 3 arranged on vertical axes, -the chain being supported between the sprocket wheels by one rail 13 of a pair while the other rail 14 supports the free ends of the carrier plates, a slide 10 preferably being secured to the free end of each carrier plate. Each carrier plate 21 is pivoted on a pin 11 carried by a plate 18 on the chain, another pin (not shown) being adapted to engage the carrier plate on straight portions but allowing swinging movement when passing around the sprockets. Sprockets 2 are driven by gearing 4-6 from a common drive. As used in a refrigerator, chain 1 is disposed outside the insulated walls 19, 20 of the freezing chamber, the connections of the carrier plates to the chain passing through a slot in wall 20 which is covered by insulated wall sections 22 provided on each carrier plate.