baber/WOPTO huggingface dataset:
Patent GB-233439-A (GB)
Title: Improvements in or relating to vacuum brake apparatus for railway trains or vehicles
IPC: B60T13/46
Filed: 1924-02-11
Abstract: 233,439. Peters & Co., Ltd., G. D., and Rawlings, V. P. Feb. 11, 1924. Electrically-actuated valves; valves controlled by pilot or relay valves.- Relates to electrically-controlled cut-off valves for isolating the train pipe from the motor-driven exhausting pumps in vacuum-brake apparatus which move to and remain in their open position automatically when the electromagnetic controlling means is de-energized. In the form shown in Fig. 1, the valve 7, controlling communication between the vacuum pump, connected at 2, and the train pipe, connected at 3, is carried by a bifurcated cranked arm 9 pivotally mounted at 10, the arm being actuated to move the valve to and hold it in its closed positon when the solenoid 5 is energized by the inward movement of the plunger 8 acting through a rod 11 on an antifriction roller 12 carried by the arm. Inward movement of the plunger is assisted by a spring 24, and it is so arranged that it is fully drawn into the coil when the valve closes, and then meets a stop 21, whilst cushioning means comprising a leather pad 26 backed by a rubber pad 27 are provided for its return movement. The valve 7 preferably comprises a leather ring 14 locked by a rubber ring 15 and attached to the valve disc by a clamping ring 17, the arm 9 preferably being integral with the disc. In the form shown in Fig. 2, the valve 7 is normally held open by a light spring 45, and is closed by a diaphragm 30 subject to the control of a pilot valve comprising a pair of valves 36, 37 mounted on a stem 38, which is connected to an arm 48 pivoted at 49 and carrying the armature 39 of an electromagnet 40. When the electromagnet is de-energized, the valve 37, as shown, is held closed by atmospheric pressure and the valve 36 is open, so that the chamber 33 is connected to the vacuum pump through the passages 43, 44, 2 and the valve 7 is held open. When, however, the electromagnet is energized, the, armature 39 is attracted, so that the valve 36 is held closed and the valve 37 is opened, whereby the chamber 33 is connected to atmosphere and atmospheric pressure acting on the diaphragm 30 closes the valve 7. In a modification of this form, the valve stem 38 is directly connected to the plunger of a solenoid disposed vertically above it, and the passages 43, 44 are dispensed with.
Patent GB-679034-A (GB)
Title: Improvements in or relating to riveting machines
Inventor: WOOD HAROLD JAMES
IPC: B21J15/22
Filed: 1950-02-13
Abstract: 679,034. Riveting. PRESSED STEEL CO., Ltd. April 4, 1951 [Feb. 13, 1950], No. 3584/50. Class 83 (iv). A riveting machine comprises a plurality of pneumatically operated clamps and a plurality of hydraulically actuated riveting snaps mounted on a frame adapted to be moved mechanically or hydraulically into, and out of, engagement with the work. A work-table 11 is supported on an upper member 12 of the machine frame 13 which supports a plurality of air cylinders 15, the piston-rods 16 of which operate clamps 17 having bifurcated limbs 18, 19, the clamps being fulcrummed on blocks 21 on the member 12. At each end of the member 12 is arranged a frame 25 which supports an air cylinder 26, the piston-rod of which is coupled to an axle 27 carried on a frame 28 which supports a plurality of riveting heads 30. By admitting air pressure to the cylinder 26 the snaps may be moved into or away from their working position between the clamps. Each riveting head has a throat portion 31 and a supporting leg 32, the lower limb of the portion 31 having adjustably secured thereto a hydraulic cylinder 33 the piston-rod 34 of which carries a movable snap 35. The end riveting heads carry a roller 40 which runs on a track 41 supported by a frame 42 mounted on adjustable hydraulic jacks 43. The track has a lowered end to allow the upper fixed snap 36 to drop and engage the rivet and the axle 54 of the roller runs in a slot 55 having a depressed end 57. Hydraulic fluid may be admitted simultaneously to all the cylinders 33 or to a selected number under the control of a valve 58 and a manifold 44. In operation, a number of mowing machine cutter blades 50 are riveted to a bar 51 by arranging the blades and the bar on the table 11 so that adjacent rivets of juxtaposed blades are in alignment with the riveting heads. Compressed air is then admitted to cylinders 15 from a control valve 61 and the clamps 17 operate to hold the parts in position. Rivets 100 are inserted in preformed holes and the riveting heads are moved into their operating position by admitting compressed air to cylinders 26. Finally, the riveting is completed by admitting pressure fluid to cylinders 33.
Patent GB-701075-A (GB)
Title: Improvements relating to bearings
IPC: G01R11/12
Filed: 1952-02-11
Abstract: 701,075. Bearings. LANDIS & GYR AKT.- GES. Feb. 11, 1952 [Dec. 21, 1951], No. 3590/52. Class 12(1) In an upper bearing for the spindle 9 of an electricity meter, a bearing pin 6 is secured in a screw plug 4 axially adjustable in a supporting framework 1, and extends through a guide member 13 in an insert member 12 projecting out of a cavity at the head of the spindle 9 and into a recess 8 in the bottom of the screw plug 4, complementary surfaces being provided on the spindle and the plug to limit radial and axial play of these parts relatively to each other. The complementary surfaces comprise a flange 15 on the insert 12 co-operating with the recess 8, and the end of a sleeve 16 on the spindle 9 co-operating with a recess 7 in the bottom of the plug 4.
Patent GB-246322-A (GB)
Title: A new or improved device for supporting the hand during writing or like operations
IPC: B43L15/00
Filed: 1925-02-09
Abstract: 246,322. Craig, C. Feb. 9, 1925. Finger and wrist attachments for facilitating writing. - In devices for supporting the hand during writing &c., of the kind comprising a hand-supporting plate with means for attachment to the hand, and provided on the underside with universal or ball bearings which provide three or more points of contact, the balls are disposed within an annular race or holder. As shown in Fig. 2, the annular race 3 has its upper edge rounded to form a substantially channel-shaped portion, and the other edge is cut away at intervals to form recesses 4 to receive the balls 2, which are retained in position by bending upwardly the portions 5 of the ring between the recesses. The ring 3 is secured, for example by rivets, to the hand-supporting plate 1, which is shaped to fit the lower side of the hand while writing and may be provided with loops or bands for attachment to the wrist or fingers. In a modification, Figs. 4 and 5, curved members or catches 9, 10 adapted to engage the hand are provided at their lower ends with wedge-shaped blocks 11 which project within a central slot 8 in the supporting plate 1 and co-operate with a correspondingly shaped central plunger 14 upon which the hand rests, the pressure of the hand causing the blocks 11 and the catches 9, 10 to move outwardly within guides 12 on the underside of the plate 1. When the pressure of the hand is relaxed the blocks 11 are drawn inwardly by spiral springs 16 connected between them on either side of the plunger 14. The upward movement of the plunger is limited by side flanges 15 on its lower face engaging the bottoms of the guides 12. The annular race 3 enclosing the balls 2 is enclosed by a casing 18, through the bottom of which portions 19 of the balls project, and the central portion 20 of the bottom of the casing is raised to form a lower stop for the plunger 14. In a further modification the annular race is enclosed by a casing carrying a hand-supporting plate upon which two hand-engaging clips are mounted, one of the clips being adapted for lateral adjustment by a screw and slot connection with the plate, the other clip being pivoted on the plate and urged inwardly by a compressed spring. The upper portions of the clips may have a hinged joint to enable them to be folded inwardly when the device is not in use.
Patent GB-773824-A (GB)
Title: 4-hydroxycoumarin derivatives and the preparation thereof
IPC: C07D311/48
Filed: 1955-02-08
Abstract: The invention comprises compounds of the general formula <FORM:0773824/IV(b)/1> where R1 represents an alkyl group; and a process for their preparation by condensing 4-hydroxycoumarin with an alkylmercapto-acetal of formula (RO)2CH.CH2.SR1 (R and R1 are alkyl groups) in acid solution.  The alkylmercapto-acetals may be replaced by their chemical equivalents, e.g. alkylmercapto-semiacetals or alkylmercapto-aldehydes or their bisulphite compounds.  In examples: (1) methylmercaptodiethylacetal and concentrated HCl are added simultaneously to a boiling aqueous solution of 4-hydroxycoumarin and the mixture cooled when 1-(4-hydroxycoumarinyl-3)-1-(2-hydroxychromonyl-3)-2 -(S-methylthio) ethane precipitates and is recrystallized from dilute acetic acid. (2) As in (1) but using dilute acetic acid as the acid reaction medium.  Starting materials.  Alkylmercapto-acetals are prepared by condensation of a halogen acetal with an alkali metal mercaptide, in alcoholic solution heated to its boiling-point or heated in a closed vessel at increased pressure.  Thus sodium methyl mercaptide and monochloracetal are refluxed in ethanol, sodium chloride removed and methyl mercapto-acetal purified by distillation.
Patent GB-633053-A (GB)
Title: An improved magnetic core system employing a laterally moving armature
IPC: H02K33/00
Filed: 1948-02-09
Abstract: 633,053. Reciprocating motors. BARRETT, J. Feb. 9, 1948, No. 3675. [Class 35] A reciprocating motor has an armature with a single energized winding oscillating between two poles of a field member on which the armature is pivoted. As shown, the armature D has contacts on extensions E co-operating with stationary contacts G for reversing the direction of the current through the armature winding B. Specification 633,039 is referred to.
Patent GB-1260384-A (GB)
Title: Rotor system for high speed helicopters and a method of controlling the pitch of a helicopter rotor
IPC: B64C27/605
Filed: 1969-01-22
Abstract: 1,260,384. Helicopters. FAIRCHILD HILLER CORP. 22 Jan., 1969 [25 Jan., 1968], No. 3694/69. Headings B7G and B7W. A helicopter 1 capable of high velocity forward flight has its rotor blade pitch angle varied during rotation so that it derives lift from reverse air flow over the retreating blade. The helicopter has two short blades 7 of high solidity ratio and provided with slotted flaps 10 to generate additional lift at low speeds. Additionally or alternatively other auxiliary lifting devices such as boundary layer control mechanisms or air slots could be employed. The blades are bi-symmetrical with rounded leading and trailing edges to improve reverse velocity lift generation. A counter-torque rotor 11 may be moved into an orientation in which it acts to provide forward propulsion. To control blade pitch angle and thus the angle of attack of the retrating blades a two per revolution or higher order cyclic pitch input is required. Fig. 5 shows curve A, corresponding to a one/rev pitch change and curve B a two/rev pitch change. Methods of combining a one/rev input and a two/rev input to get an input corresponding to the form of curve C are described with reference to Fig. 6 which shows a swash plate 35 to provide a conventional one/rev pitch change and a Hookes joint 49 to provide a two/rev or higher order change according to the invention. The primary cylinder 52 may be tilted relative to shaft 33 and secondary cylinder 48 by means of an input link 55 and this causes the rotation of cylinder 48 to oscillate at a slower then faster speed than cylinder 52 giving a two/rev input which is combined with that of the swash plate by means of a mixing lever. Fig. 7 (not shown) which shows a flexible plate (60) to which are attached push rods (71) attached to horns (37) the plate being in contact with rollers (65a, 65b) (63a, 63b) which may change its shape. Additional rollers may be provided in which case a higher than two order input is obtained. Figs. 8 and 9 (not shown) also show methods of input combining, Fig. 8a a crank assembly and Fig. 9 a cam arrangement. A detailed description of the embodiment employing a Hookes joint is given with reference to Figs. 10 to 14 (not shown). The relative changes for the one/rev and two/rev input may be altered.
Patent GB-588389-A (GB)
Title: Improvements in or relating to suspension devices for road vehicles
IPC: B60G3/12
Filed: 1945-02-14
Abstract: 588,389. Vehicle suspensions. HALL, A. R. Feb. 14, 1945, No. 3713. [Class 108 (ii)] In a wheel suspension comprising a box-like lever 14 pivoted at one end 15 to the vehicle body about a substantially horizontal transverse axis and urged downwardly by resilient means 20 acting at its other' end, the lever 14 is of tapered shape in plan, being wider at the pivoted end 15, and the wheel axle is attached to the lever between its ends. The lever 14 is of welded sheet metal construction, the top and bottom being formed from one piece bent hairpin fashion around and welded to a tube 22, while the sides 25, 26 are formed by two lenticular shaped pieces reinforced by diaphragms 34, 35. L-shaped brackets 17 secured to the chassis frame carry bearing lugs in which the tube 22 pivots. The outer end of the lever 14 carries a tubular bush 27, Fig. 4, for pivotal connection with a telescopic spring unit. 20 secured at its other end to the vehicle body. The wheel 12 is carried by an axle extending through holes in the sides 25, 26 between the diaphragms 34, 35 and is clamped by a nut 32 carried in a recess 33 pressed out of the inner side 25. The pivotal . connections of the spring unit 20 may incorporate rubber bushes stressed in torsion.
Patent GB-922841-A (GB)
Title: Improvements in or relating to magnetic tape recording or playback apparatus
IPC: G09B5/04
Filed: 1962-01-31
Abstract: 922,841. Selective magnetic tape recorders. R. J. M. GAUBERT. Jan. 31, 1962 [April 14, 1961], No. 3715/62. Class 40 (2). Endless magnetic tapes in rack-stored cassettes 37, are selectively engaged for play or held out of engagement by cam-operated levers 79 engaging the inner ends 38 of the cassettes. In playing position, a pinch-roller 28 engages a capstan 50 common to all the cassettes and guides 29, 31 wrap the tape about appropriate heads in the stacks 69-71, pressure being exerted by a spring 47 forcing a roller 42 (dotted position) against the outer end of the cassette. A finger-lever 39 enables the roller 42 and its lever to be snapped over to the solid-line position whereupon a hook-form member 51 sufficiently ejects the cassette for manual exchange. A local circuit (Fig. 8, not shown) responsive to a prolonged silent portion of the tape, energizes a semi-rotary solenoid and ratchet means associated with cams 77 operating the levers 79 and in one embodiment, notches 83 in one cam, Fig. 5, are interspaced with single notches in the remaining cams, Fig. 6, so that announcements provided by one tape may occur between a succession of records of background music on the other tapes. The single-notch cams may be splined on to a common shaft (Figs. 11, 12, not shown) to vary the programme order, or individual solenoids (Figs.9,10 not shown) maybe allotted to each cam for random access. Mechanical means drivable by the capstan 50 (Fig. 13, not shown) may be engaged instead of the solenoid 92 to operate the ratchet. Specifications 795,553 and 910,867 are referred to.
Patent GB-1106971-A (GB)
Title: Improvements in or relating to machines for operating on shoe soles
Inventor: SKELSEY RONALD EDWARD
IPC: A43D87/00
Filed: 1964-01-29
Abstract: In a machine for rounding and/or channelling shoe soles having a reciprocating rounding knife 10 (Figs. 1, 3, 4, Figs. not shown), supports 22, 32 engageable with the opposite surfaces of the margin of the sole, means 16, 18 for feeding the work step by step, and a welt pressing roll 40, the roll is movable in a direction normal to the plane of reciprocation of the knife between an operative position (Fig. 3) in which it engages the upper surface of the welt of a welted shoe and an inoperative retracted position (Fig. 4) for when the shoe is non-welted. Bracket 18 oscillates to feed the work and channel the sole by means of knife 20.  Spring pressed clamp member 22 has inclined teeth 26 to prevent the sole moving backwards as knife 20 cuts the channel.  Frusto-conical roll 40 is rotatable on screw 38 carried by a slidable carrier 32, and is moved between extended and retracted positions, or to intermediate positions according to the width of the welt, by manually operated handle 54 acting via eccentrically disposed spigot 52 and vertical slot 46.  An adjustable friction pad 56 prevents movement of the roll from the adjusted position by the shoe.
Patent GB-408425-A (GB)
Title: Improvements in juice presses
IPC: A47J19/02
Filed: 1933-02-07
Abstract: 408,425. Extracting juice from fruit. STANLEY, E., Woodlands, Orchard Way, Croydon, and ALUMINIUM PLANT & VESSEL CO., Ltd., Point Pleasant, Wandsworth, London. Feb. 7, 1933, No. 3722. [Class 28 (ii).] A press for extracting juice from fruit and the like comprises a hollow bowl having an open side 2 for the passage of the presser 17 which is pivoted at 14 in the interior of a housing integral with the bowl and having side walls 9, 10 connected at the side remote from the hand lever 8 by a wall 11, and overhanging walls 12 at the front. This construction facilitates casting inasmuch as the bowl and the housing may have walls of uniform thickness, and the exterior of the whole casting is easily accessible to the polishing buff. The housing part of the casting is slotted to accommodate the handle which is cast integrally with the boss 13 which is afterwards drilled for the pivot pin 14. A strainer 6 may, or may not be provided, and may be integral with or removable from the bowl. The strainer is preferably formed with an upstanding wall or walls 18 against which. the fruit is pressed by the plunger 17, and is provided with runners which rest on the floor of the bowl. The juice issues from a lip 4. The stem may terminate in an attachment clamp or in a base standard, and may be separate from or integral with the bowl.
Patent GB-408426-A (GB)
Title: Improvements in or relating to power transmission and reduction systems
IPC: F16H33/06
Filed: 1933-02-07
Abstract: 408,426. Epicyclic reduction gearing. STEVENS, A. H., 5, Quality Court, Chancery Lane, London.-(Benson Corporation, M. B. ; 52, Vanderbilt Avenue, New York, U.S.A.) Feb. 7, 1933, No. 3779. [Class 80 (i).] A power transmission and speed reduction system comprises a driven internally-toothed gear 7, Fig. 2, traversed by a gyrating gear 9 operated by an eccentric 10 on the driving-shaft 2 and restrained and oriented by a member 11 which oscillates about a point 12 and is provided with a slot 18 engaged by a pin 19 on the gear 9. The member 11 is oscillated by a second and larger eccentric 15 on the driving shaft 2. The pivot 12 may be mounted on a block having limited movement between cushioning springs (Fig. 4, not shown). A two-stage speed-reducer is described (Fig. 3, not shown).
Patent GB-934671-A (GB)
Title: Improvements in or relating to electric motors
IPC: H02P1/42
Filed: 1960-02-03
Abstract: 934,671. Induction motors. ROBERT BOSCH G.m.b.H. Feb. 3, 1960 [Feb. 4, 1959], No. 3793/60. Class 35. A split phase induction motor comprises a short-circuited rotor 5, a main stator winding 6, an auxiliary starting winding 7 made of copper and a switch 10, 11, 12 for opening the circuit of winding 7, the resistance of winding 7 being such that an output rating of the motor higher than obtainable by cutting out winding 7 can be obtained by connecting a suitable capacitor 5 in parallel with the switch so that it and winding 7 remain in circuit during normal running. An additional resistor 16 may be provided.
Patent GB-1405723-A (GB)
Title: Vertical deflection circuit for a video terminal of a data  transmission system
IPC: G09G1/04
Filed: 1973-01-25
Abstract: 1405723 Deflection wave generators SOC ITALIANA TELECOMUNICAZIONI SIEMENS SpA 25 Jan 1973 [17 April 1972] 3879/73 Heading H3T A vertical scanning wave generator for causing lines to be formed in groups separated by spaces comprises a generator T producing pulses at zone repetition frequency, a counter CN receiving the pulses and controlling a digital-toanalogue converter CDA to produce a staircase wave, a sawtooth wave generator T controlled by the pulses from T and a circuit A2 for combining staircase and sawtooth waves.
Patent GB-985641-A (GB)
Title: Fluid cooled rod packing assembly
IPC: F16J15/16
Filed: 1963-01-30
Abstract: 985,641. Stuffing-boxes. GARLOCK Inc. Jan. 30, 1963 [Feb. 14, 1962], No. 3896/63 Heading F2B. A reciprocating rod 14 is sealed where it extends through an opening 12 in a casing 10 by packing means 32, 34 cooled by fluid circulating through circular ducts 60 in packing-holding rings 22a, 22b, 22c and 22d, each having a side face in contact with one of the packing means. The ducts 60 are interconnected by U-shaped ducts 72, 74 and 76 in rings 22a, 22b, 22c and 22d and cooling fluid, supplied to the duct 60 in ring 22a through a duct 64, Fig. 4, formed by axially aligned passages in the portions 62 of the rings and a port (not shown) in the end plate 20 is circulated serially through the rings, via ducts 72, 74 and 76 and returned via duct 77 in ring 22a and port 70 in plate 20. Each packing 32 comprises a pair of segmental packing rings, preferably of polytetra fluoroethylene each urged into contact with the rod by a garter spring 42 and an anti-extrusion ring 46 of metal, e.g. bronze, split diametrally at 48 and surrounded by a garter spring 50. The packing 34 comprises a single polytetrafluoroethylene packing ring 54 and an antiextrusion ring 46. The rings 22a, 22b, 22c and 22d are held in alignment by two screws 78 and gaskets 80 prevent leakage between adjacent rings. A drain port 82 is provided in the plate 20.
Patent GB-905382-A (GB)
Title: Improvements in or relating to electronic coding and decoding devices
IPC: H03K19/16
Filed: 1959-02-04
Abstract: 905,382. Circuits for non-linear magnetic cores. COMPAGNIE INDUSTRIELLE DES TELEPHONES. Feb. 4, 1959 [Feb. 4, 1958], No. 3950/59. Class 40 (9). A magnetic amplifier simulating a centrestable polarized relay comprises two cores T1, T2 having similarly poled control windings I, III connected in series and oppositely poled windings II fed with A.C. and each connected in series with a rectifier to a common point K which is connected to the input of transistor TR. Fig. 3 illustrates the current/control ampere turns characteristic for the output from rectifier Rd 1 , Fig. 4 illustrates that for rectifier Rd 2  and, Fig. 5, curve S 1  illustrates the combined characteristic. When the current exceeds a value I o  =(U o -U 1 )/r emitter current flows and collector current follows with the exception that it is clamped to a value IT =(U 2 - U 1 )/R when the collector potential equals the base potential. The resulting collector current/control ampere turns characteristic is thus, as shown in Fig. 1, the equivalent of a centre stable relay. The arrangement may be used as an " exclusive-or " circuit, the two inputs being fed respectively over circuits x and y, so that in each core the effects due to these circuits are in opposition. In these circumstances inputs of 0 and 1 or 1 and 0 on x and y correspond to points F or C respectively to give an output of 1. Inputs of 0 and 0 or 1 and 1 correspond to point 0 and an output of 0. The arrangement may be used to encode telegraph signals which are applied to one of the circuits x, y, an arbitrary sequence of 1's and 0's being applied to the other circuit. The same circuit may be used for decoding at the receiver. Several such coding arrangements may be connected in cascade. Specifications 791,372 and 803,290 are referred to.