baber/WOPTO huggingface dataset:
Patent GB-793963-A (GB)
Title: Improvements in or relating to the control of the outspeed of a variable drive
Inventor: BUTTERWORTH HAROLD
IPC: B23Q5/18
Filed: 1955-07-27
Abstract: 793,963. Variable-speed gearing. BUTTERWORTH BRITISH AUTOMATIC MACHINE TOOL CO., Ltd. July 23, 1956 [July 27, 1955], No. 21651/55. Class 80 (2). In a variable speed drive where the output speed is sequentially and automatically controlled by a series of hydraulic pistons operated by a valve connected to the output shaft, a constant speed input driving disc 11 drives an output driven disc 12 by a friction roller 13 whose axis is off-set from the centre line of the input and output shafts by an amount " t ". Roller 13 is mounted on bracket 14 pivoted about rod 15 and slidable thereon. Clockwise rotation of the driving disc 11 produces a downward force on the roller and, if unopposed, the roller falls to its lowermost position, thereby increasing the output speed. Raising the roller is effected by the quadrant 17 which is moved to the desired position by means of pistons acting through pegs 24 and shafts 21a, 21b, 20, 18, shafts 21a, 21b being coupled through gears 41, 42, 43. Movement of pistons 25 is hydraulically effected through selector valve 27 driven from the output shaft 12a by a ratchet assembly 36, 37 and cam 40. The selector valve is held in each position by a spring-loaded ball 35 fitting into a series of 12 conical detents in flange 34, there being twelve valve positions provided one for each of the twelve pistons. Alternatively, the valve may be operated by pins projecting from plate 40 and engaging at each revolution with twelve slots in the periphery of a wheel keyed to the rotary valve shaft. Each piston is provided with an adjustable dead-stop 29 to control the selected output speed in that position such that the mechanism may be set to sequentially and automatically select a cycle of twelve ratios such as is required on automatic lathes &c. A handoperated pressure relief valve is fitted to permit easy adjustment of the stops.
Patent GB-771422-A (GB)
Title: Improvements in or relating to hydraulic braking systems for vehicles
IPC: B60T11/24
Filed: 1955-07-27
Abstract: 771,422. Hydraulic brakes. SOC. D'INVENTIONS AERONAUTIQUES ET MECANIQUES S.I.A.M. July 27, 1955 [July 30, 1954], No. 21656/55. Class 103 (1). In an hydraulic brake system for road vehicles disc brakes on each wheel each have at least two actuator cylinders 1 and 2, actuator cylinders 1 being operated through lines 3 and 4 by a master cylinder A and actuator cylinders 2 through lines 7 and 8 by master cylinder B. The two master cylinders A and B have a single combined reservoir E as shown, but they may, alternatively, have completely separate reservoirs, both cylinders being operated by a common pedal C.
Patent GB-771080-A (GB)
Title: Improvements in aqueous dispersion of fluorocarbon polymers
Inventor: GREEN IRVING
IPC: C08L27/12
Filed: 1954-07-24
Abstract: A dispersion comprises a resinous polymer of trifluorochloroethylene and a plasticizer dispersed in a liquid medium comprising water and a wetting agent which comprises a water-soluble organic oxygenated compound, the mixture having been formed by directly admixing a powdered polymer of trifluorochloroethylene and the plasticiser in finely-divided form with the liquid medium.  The polymer may contain up to 15 per cent of another monomer such as vinyl chloride, tetrafluoroethylene, perfluoropropene or acrylonitrile.  The plasticiser may be a liquid or waxy polymer of trifluorochloroethylene, or a chlorinated diphenyl or diphenyl methane.  The organic oxygenated compound may be an alcohol having not more than 8 carbon atoms per molecule, such as methanol, ethanol, propanol, butanol, pentanol, hexanol, octanol, methoxy ethanol, ethoxy ethanol, butoxy ethanol and ethoxy ethoxy ethanol, a ketone having not more than 6 carbon atoms per molecule, such as acetone, methyl ethyl ketone and diethyl ketone, or a polyethylene oxide of the non-ionic type wetting agents having not more than 30 carbon atoms per molecule, such as a polyethylene oxide substituted at one terminus with a thioalkyl group or with an alkylphenoxy.  Fillers and pigments such as calcium silicate, calcium carbonate, carbon black, titanium dioxide, phthalocyanines and chrome green may be added to the dispersion.
Patent GB-625536-A (GB)
Title: Improvements in eddy current couplings
IPC: H02K49/04
Filed: 1947-08-08
Abstract: 625,536. Electromagnetic clutches. WINTHER, M. P. Aug. 8, 1947, No. 21790. Convention date, Aug. 26, 1946. [Class 35] An eddy current coupling for a motor vehicle or other purpose has a discontinuous inductor ring consisting of a plurality of arcuate segments resiliently supported to permit substantial radial movement thereof. The driving and the driven elements of the coupling are the field member 17 and the inductor member 7 respectively. The field member 17 includes a drum 19 secured to posts 21 extending from the flywheel 11. Secured within the drum 19 and between a rim 23 and welding 55 are two pairs of toothed rings 25, 51 and 33, 39 and exciting coils 31, 49. The rings 25, 51 have teeth 27, 53 respectively, which extend axially inward to meet at the central transverse plane of the drum 19. The rings 33, 39 abut on the plane and have teeth similar to and extending between those on the other rings. All the teeth are triangular in plan and taper towards their free ends. The inductor member 7 includes a discontinuous ring 61 consisting of arcuate segments 63 of magnetic material secured to flexible fins 71. These fins are secured to plates 67, 69 fixed on a hub 65, keyed upon the driven shaft 5. Owing to the resilient nature of the fins 71, the air gap 77 may be made very small. To each side of segments 63 is secured a copper segment 79 having the same arcuate length as the segment 63. An inductive brake constituted by a field member 85 and a brake inductor 107 operative when the transmission is in neutral, may be incorporated with the eddy-current coupling.
Patent GB-258074-A (GB)
Title: Improved thread stop mechanism for drawing, roving, spinning, doubling, twisting andlike machines
IPC: D01H13/18
Filed: 1925-09-01
Abstract: 258,074. Robinson, J., and Bentley, W. E. Sept. 1, 1925. Delivery, stopping; piecing, means for facilitating. - Each yarn &c. in roving, drawing, spinning, doubling, twisting, and like machines supports a detector 4 which is connected to a hub a<1> provided with a comb a on an arm adapted to sever the other yarns in the event of a detector being released upon breakage of one yarn. To facilitate piecing a detachable spindle 8, Fig. 6, is inserted in the tube d or spindle so that the ends 11 delivered by the rollers 10 are caught thereby and twisted together.
Patent GB-635592-A (GB)
Title: Improvements in control systems for rotative winged aircraft
IPC: B64C27/54
Filed: 1947-08-08
Abstract: 635,592. Fluid-pressure servomotor-control systems. AUTOGIRO CO. OF AMERICA. Aug. 8, 1947, No. 21886. Convention date. July 5, 1941. [Class 135] [Also in Groups XXXIII and XXXVIII] An aircraft sustaining rotor control system includes a rotor control element subject to rotor loads and movable under the influence thereof, a pilot's control member, mechanism interconnecting said element and said member whereby positional correspondence between the element and the member is substantially achieved, said mechanism including a servomotor arranged to assume a portion only of the rotor loads, the remainder of said loads being carried by the mechanism to the pilot's control member whereby the pilot is able to retain a sense of control " feel." The rotor 4, which may be driven or autorotative, is supported by a hub casing 17 arranged for tilting about a gimbal mounting 6. An arm 18, attached to the casing 17, is universally connected at 20 to a control rod 19 pivoted at its lower end 19a to an arm 21. The latter-mentioned arm is directly connected at one end 22a by a rod 22 to a pilot's control member 25 and at the other end 23a to the piston-rod 23 of a doubleacting fluid-pressure servomotor 29, 30. Pivoted at 46a to the rod 19 is the cylinder casing 45 of a " self-lapping " valve of which the extremity of the piston-rod 50 is pivoted at 51 to the arm 21. A reservoir 33 supplies fluid to two pumps 34 and 35 respectively driven by the rotor head 17 and the engine (not shown). The pump delivery pipes 39, 40 are connected through non-return valves 41, 42 and a pipe 44 to the valve 45, which is in turn connected to the servomotor cylinders 29, 30. The lapping action of the valve 45 is sufficient to permit small variations in the inclination of the rotor head to be transmitted directly to the pilot's control member without causing actuation of the servomotor in order to retain control sensitivity during normal flight conditions. Movement of the member 25 will cause the arm 21 to rock about the pivot 23a and actuate the valve rod 50. " Follow-up " action of the servomotor will then rock the arm 21 about the pivot 22a and actuate the rod 19 to tilt the rotor head. The pivots on the arm 21 are so positioned that the pilot's control member carries less than half of the rotor loads, the remaining proportion of the loads being carried by the servomotor in order that the pilot may retain a sense of control " feel." The arrangement described for longitudinal control of the rotor head is duplicated to provide transverse control thereof. Specifications 393,976 and 420,322, [both in Group XXXIII], are referred to.
Patent GB-585194-A (GB)
Title: Fastenings
IPC: E05B65/52
Filed: 1944-11-08
Abstract: 585,194. Fastenings. SPEGELSTEIN, E. Nov. 8, 1944, No. 21981. [Class 44] In a hasp fastening having fixed members 1, 6 on lid and body respectively of an attache case, or the like, a hasp 5, hinged to the member 6 has an edge 9 which is pressed into and grips an upstanding portion 3 of a tongue 2, when the lid of the case is forced away from the body, due to pressure of the contents of the case. The edge 9 may be serrated or a projection 10, on the tongue, may co-act with a recess 11 in the edge. A spring 7 presses the hasp into the closed position. The tongue 2 engages within a slot 8 in the member 6.
Patent GB-1043977-A (GB)
Title: Precision vise
Inventor: DUGAS PHILIP
Filed: 1965-05-25
Abstract: 1,043,977. Vices. ATOM TOOL & DIE CORPORATION, AND CREW'S DIE CASTING CORPORATION. May 25, 1965, No. 22097/65. Heading B3B. A vice comprises a front end block 32 fixed to one end of a base-plate 11 and carrying a first jaw 36, a rear slide 61 mounted on the base-plate 11 and releasably locked in adjusted position by spring biased pawls 102, 103 on the rear block which engage respectively with teeth 30, 31 provided on opposite longitudinal sides of the base-plate 11, a front slide 60 movably mounted on the base and carrying a second jaw 71, the front slide 60 and rear slide 61 being connected by springs 92, 93 which normally bias the front slide against the rear slide but which allow the front slide to move relatively to the rear slide. The pawls 102, 103 are adapted to be swung about screws 106, 107 by a pair of push rods 117, 118 which are operatively engaged by a rotatable cam member 122 having a pair of diametrically disposed cam surfaces 132. 133, which engage the inner ends of the push rods when the pawls are in locking engagement with the base 11, Fig. 5 (not shown). The cam member 122 has a second pair of diametrically disposed cam surfaces 134, 135 which are adapted to engage the inner ends of the push rods 117, 118 and move the push rods outwardly to release the pawls and permit the slides to be moved on the base, to another position when the handle 123 is moved to the dotted line position 136 (Fig. 1). The front slide 60 is provided with a roller 142 journalled on a vertical pin 143 and biased into engagement with the cam 122 by the springs 92, 93. Movement of the handle 123 to the position 152 (Fig. 1) causes the front slide 60 to move away from the rear slide 61 and brings the rear jaw 71 into operative engagement with the workpiece to be clamped. Each jaw 36, 71 has a vertical work engaging surface and an inclined surface which engages with a corresponding inclined surface on the front block 32 and front slide 64 respectively the jaws being yieldably biased to a position above the base when in an inoperative position.
Patent GB-1458982-A (GB)
Title: Knitting machines
IPC: D04B15/82
Filed: 1973-05-09
Abstract: 1458982 Knitting machines W E BOOTON Ltd 8 May 1974 [9 May 1973] 22123/73 Heading D1C The needles 3 of a knitting machine are raised to bring their knitting butts 5 into engagement with a knitting cam track, for displacement to knit or tuck height, by means of pattern jacks 4 whose butts 6 are selectively engageable with and lifted by a vertical array of selector cams 7, the jacks subsequently being lowered by a lowering cam and their downward motion being limited by a landing cam 10 which directly engages the lower extremity of the jacks in order to avoid or reduce the shearing or bending stresses caused by engagement of the cam 10 with landing butts of the jacks in conventional machines. A jack retaining ring 11 is provided.
Patent GB-463378-A (GB)
Title: Improvements in vulcanization of rubber
IPC: C08K5/00
Filed: 1936-08-11
Abstract: The vulcanization of rubber is accelerated by the addition to the mix of compounds of the general formula <FORM:0463378/IV/1> where R and R3 are mercaptothiazole residues, and R1 and R2 are aryl nuclei or are combined to form one aryl nucleus.  The compounds are prepared by the interaction of a reactive salt of the mercaptazole such as an alkali metal or calcium salt with a di-halogeno-imid.  The preferred compound is bis-thio-benzothiazyl para quinone diimine obtained by the interaction of sodium benzothiazyl mercaptide and p-benzoquinone dichloro-imid, under anhydrous conditions in the presence of a hydrocarbon solvent such as toluene or xylene.  A list of alternative thiazoles is given of which the following is typical: 1-mercaptothiazole, 1-mercapto - 4 - phenyl - thiazole, 1 - mercapto - 5-ethoxy - benzothiazole, 1 - mercapto - 5 - nitrobenzothiazole, and 1-mercapto-5-chloro-benzothiazole. The p-benzoquinone dichloro-imide may be replaced by the ortho compound or by the analogous naphthoquinone, anthraquinone, and phenazine type compounds.  The accelerators may be used either alone or in conjunction with basic nitrogen - containing accelerators such as the di-aryl guanidines, the aldehyde amine accelerators, butyl ammonium oleate, diphenyl guanidine phthalate, dibenzyl amine, &c.  The accelerators show favourable vulcanization characteristics, and a particularly low rate of cure in the early stages which allows very severe processing conditions prior to vulcanization.ALSO:The vulcanization of rubber is accelerated by the addition to the mix of compounds of the general formula <FORM:0463378/V/1> where R and R3 are mercaptothiazole residues and R1 and R2 one aryl nuclei or are combined to form ore aryl nucleus.  The preferred compound is bis-thio benzothiazyl para quinone diimine obtained by the interaction of sodium benzothiazyl mercaptide and p-benzoquinone dichloro-imid.  A list of alternative thiazoles is given.  The p-benzoquinone dichloro-imid may be replaced by the ortho compound or by the analogous naphthoquinone, anthraquinone, and phenazine type compounds.  The accelerators may be used either alone or in conjunction with basic nitrogen containing accelerators such as the di-aryl guanidines, the aldehyde amine accelerators, butyl ammonium oleate, diphenyl guanidine phthalate, dibenzyl amine, &c.  The accelerators show favourable vulcanization characteristics, and a particularly low rate of cure in the early stages, which allows very severe processing conditions prior to vulcanization.
Patent GB-472085-A (GB)
Title: An improved roofing tile
IPC: E04D1/04
Filed: 1936-08-12
Abstract: 472,085. Roofing - tiles. MACLEOD, J. N. Aug. 12, 1936, No. 22158. [Class 87 (i)] A roofing-tile consisting of a flat portion 1, Fig. 3, and a tapered roll portion 4 is provided with a ridge 2 with end faces 8, 9 set back a predetermined amount, and identically inclined inwardly. The engagement of these inclined faces 8, 9, Fig. 4, regulates the overlap of the tiles. A rib 11, Fig. 3, forms an abutment which rests upon one of the battens of a roof. A shallow groove 13 acts as a rainwater check.
Patent GB-1170147-A (GB)
Title: Improved Electrical Measuring Apparatus.
Inventor: MOULTON CLIFFORD HAROLD
IPC: G01R15/14
Filed: 1967-05-12
Abstract: 1,170,147. Protective arrangements. ALLISCHALMERS MFG. CO. 12 May, 1967 [16 May, 1966], No. 22166/67. Heading H2K. [Also in Divisions G1 and G3] Apparatus for sensing an electrical condition of a high power electrical transmission line 10 in a region of high potential and for transmitting a generated signal representative of said condition to a receiver in a region of low potential, which receiver provides an output signal to operate circuit-breakers, meters, or other apparatus for monitoring or controlling current conditions in line 10, comprises: a sensing circuit 12 including a current transformer 42 which produces a voltage signal proportional to the current in line 10; a frequency converter comprising an integrator 16 having a capacitor 64 arranged to be charged by the signal from sensing means 12, a discharging circuit 17 associated with the capacitor 64, and a multivibrator circuit 18, the circuits 16, 17, 18 cooperating to produce at the output terminal 82 of the multivibrator a pulsating current signal having a frequency directly related to the current in line 10; a blocking oscillator 20 which is triggered by the relatively low energy signal at terminal 82 and which provides a high energy output; a diode 22, e.g. a gallium arsenide diode, connected to receive the output from circuit 20 so as to emit a corresponding pulsating light signal, e.g. of infra-red radiation; power supplies 26 and 28 energized from the line 10 and providing power for the circuits 16, 17 and 18; an unlocking circuit 24, including complementary transistors 106, 108, which is associated with the supplies 26, 28 and with a diode 97 in the output of multivibrator 18 in such a manner that diode 97 is biased into conduction as long as either one or both of the supplies 26, 28 is or are operative, the diode 97 being rendered non-conductive by the output from circuit 24 should both supplies fail so that the signal from multivibrator 18 is blocked from oscillator 20; and receiving means 36, including a photo-transistor 175, which is located in a region of low potential and which converts the pulsating light signal from diode 22 into an output to be used for control or measurement purposes. The system also includes a temperature compensated regulator (Fig. 1, cont., not shown), for stabilizing the output from supplies 26, 28.
Patent GB-948940-A (GB)
Title: Improved slidable mountings for drawers, doors, stencils and the like
IPC: B43L13/04
Filed: 1959-06-29
Abstract: 948,940. Draughting machines. H. G. KEWLEY. June 28,1960 [ June 29,1959], No. 22229/59. Heading G1X. [Also in Division A4] A stencil 132 is slidably mounted on a drawing board 130 by grooved parallel guide members 140,141 which rigidly connect rails 138, 139 having flanges which engage grooves 134...137 in the board 130. The lower flanges may bear against the face of the board instead of being received in grooves 134,136.
Patent GB-876467-A (GB)
Title: Improvements in or relating to apparatus for use in melting a zone of a rod of semi-conductor material
IPC: C30B13/20
Filed: 1960-06-24
Abstract: The apparatus of the parent Specification for crucible-free zone melting of a rod of semi-conductor material is so arranged that the innermost turn of the heating coil is at the same electrical potential, e.g. earth potential, as the semi-conductor rod to prevent detached crystal spangles which form on the heating coil from flying into the molten zone.
Patent GB-723060-A (GB)
Title: Improvements in or relating to drawers for containing valuables
IPC: A47B88/20
Filed: 1952-09-04
Abstract: 723,060. Drawers. EAST, D. O. Oct. 26, 1953 [Sept. 4,1952], No. 22299/52. Class 52 (1). A spring or weight-retracted drawer 1 is held open by pivoted catches 6, 7 which are released by the falling of a shield or cover-plate 8 hinged to the drawer and freed by linkage operated by a push-button 22. As shown, the shield 8 is propped open by a spring-hinged flap 10 retained by a catch 12. An auxiliary catch 26 on the shield is lifted by a striker 29 on the flap as it swings against the shield when the catch 12 is released by the push-button 22 and the shield then falls and releases the drawer which automatically closes.
Patent GB-587959-A (GB)
Title: Improvements in or relating to the electrodeposition of tin
IPC: C25D3/30
Filed: 1944-11-13
Abstract: A tin alloy for use as anode in the electro-deposition of tin contains sodium and/or potassium in amount 0.1-10 per cent. Alloys preferably used are those containing 0.1-5 per cent. of sodium or 0.1-5 per cent. of potassium.  Specification 578,069 is referred to.
Patent GB-640282-A (GB)
Title: Improvements in or relating to building members
IPC: E04B2/28
Filed: 1947-08-12
Abstract: 640,282. Building-blocks; walls. AKTIEBOLAGET ELL-BLOCK. Aug. 12, 1947, Nos. 22325 and 22326. Convention dates, Oct. 19, 1946, and Dec. 31, 1946. [Classes 20(iv) and 87(i)] A wall having insulating spaces 4, 5 is built up from L-shaped blocks 7 having horizontal spacer ribs 6 at their upper edges. The wall may also include rectangular spacer blocks 1 having, on one vertical face, horizontal ribs 2 at the upper edge and preferably vertical ribs extending downwards therefrom preferably below the bottom face of the block. The Specification as open to inspection under Sect. 91 comprises also a spacer block formed with ribs on two opposite faces. This subject-matter does not appear in the Specification as accepted.
Patent GB-882392-A (GB)
Title: Improvements relating to dry metal rectifier assemblies
Inventor: BUTT KENNETH STANLEY
IPC: H01L25/03
Filed: 1959-06-30
Abstract: 882,392. Rectifiers. WESTINGHOUSE BRAKE & SIGNAL CO. Ltd. June 3, 1960 [June 30, 1959], No. 22365/59. Class 37. A rectifier assembly comprises two shells 3 and 9 defining an open-ended passageway having one or more intermediate connectors 2 with an enlarged central portion and which is secured by means of slots in shells 3 and 9 and end connectors 13 having no enlarged central portion so that they can be inserted after the two shells are brought together to provide the casing. End electrodes 13 are also secured by means of slots in the shell portions, and have a wide portion 12 which limits the movement of the connector through the first slot. Between each pair of connectors is inserted a stack comprising rectifier element(s), spacers and a spring to hold the stack in place. The arrangement provides firm extensions for external connections particularly for use in printed circuits. A similar assembly comprising two such passageways is also described.
Patent GB-226264-A (GB)
Title: Window fastener
IPC: E05C5/04
Filed: 1924-06-05
Abstract: 226,264. Thomas, D. J. June 5, 1924. Screw fastenings. - A screw-bolt sash fastener works in a tube let into one sash and is provided with a part of reduced diameter co-opei,ating with a flange or restricbed part of the tube to prevent bodily withdrawal of the bolt. In the form shown in Fig. 1, the bolt 2 has a reduced threaded portion 2<A> engaging the constricted threaded part 1 of the tube 4. The bolt is carried by the sash 5 and engages perforated plate 7 on the other sash 6. In the form shown in Fig. 3, the end 2<A> of the bolt 2 is threaded and engages a threaded plate 4 on the other sash. The plate 4 may have a series of holes. The reduced shank of the bolt passes through a flange 1<A> of the tube ] which prevents bodily removal of the bolt. Reference has been directed by the Comptroller to Specifications 22580/93 and 15701/97.