baber/WOPTO huggingface dataset:
Patent GB-1129557-A (GB)
Title: Improvements in or relating to methods of controlling the pump speed of a sputter ion pump
Inventor: HERBERT BRIAN KENNETH
IPC: H01J41/12
Filed: 1966-05-17
Abstract: 1,129,557. Automatic pressure control. MULLARD Ltd. May 17, 1967 [May 17, 1966], No.21912/66. Heading G3R. Rate of pumping within an evacuated space may be varied by varying the amplitude, mark-space ratio or frequency of a squarewave voltage applied to "sputter ion" pump electrodes. In Fig. 3, the vacuum in a space 3 is maintained at a low value, against leakage, by applying to sputter ion electrodes within it a high voltage from a D.C. source 1. The output of a variable frequency A. C. source 5 is applied to a long-tailed pair of valves 12, 13 which are arranged to produce a squarewave voltage output to control a switching pentode 4 connected across the electrodes so that they are supplied with an interrupted voltage. The reduction of pressure thus produced may be varied by varying the frequency of A.C. source 5, the mark-space ratio by a potentiometer 23, or the voltage of source 1. To maintain constant pressure, the output of an ion gauge (not shown) within the space is compared with a reference voltage corresponding to the desired pressure and any difference utilized to control the frequency of A.C. source 5, for example. Current limiting resistor 2 may be replaced by a further switching valve. Solid-state switching devices may be used instead of valves.
Patent GB-565451-A (GB)
Title: Improvements in or relating to electric overload responsive circuit interrupters
IPC: H01H71/16
Filed: 1943-12-31
Abstract: 565,451. Automatic circuit-breakers. SHEPHERD, G. R. (Westinghouse Electric International Co.). Dec. 31, 1943, No. 21934. [Class 38 (v)] In order to render the ambient-temperature compensation of a thermally-released circuitbreaker constant in effect, the compensating means is connected to the thermal control element without any possibility of lost motion between them. The invention is shown as applied to the construction in which the movable contact is manually operable in both directions with a snap action. The contact arm 25 is fastened to a carrier 31 which is pivoted at 35 to the base and at 71 to a toggle 47, 49, the upper pivot 73 of which engages the crutch of a cradle 45 pivoted at 63 and normally held latched at 91. The toggle knee is connected by D.C. springs to a handle-lever 43 pivoted at 55 and having a member 61 for resetting the cradle 45 after tripping.- Latch 91 is a screw which is factory-adjusted and sealed in the current-carrying bimetal strip 79 which is secured to a 'bracket 81 pivoted at 85 to a further bracket 83 and biassed clockwise by a spring 119: Bracket 81 also carries an insulating thrust member 111 which is urged by spring 119 against an adjustable screw 109 in the compensating bimetal strip 103, the point of engagement being on the line connecting pivot 85 with the nearest fixed part of strip 103. The latter flexes downwards on temperature-, increases, and spring 119 causes bracket 81 to rotate clockwise, so compensating for the anticlockwise flexure of 79. The hole 121 accommodating members 109, 111 is not large enough to allow heat within the casing to affect the strip 103, even when the breaker is oil-immersed. In Fig. 3, the strip 129, instead of acting as a latch, trips by a positive clockwise movement and accordingly the strip 103 moves upwards, the bias spring 165 tends to rotate bracket 81 anti-clockwise, and a piano steel wire connection - 157 is held in tension between an adjustable screw 155 and a washer 161 insulatingly carried on bracket 81 by the bushing 159 and nut 163. Strip 129, or each strip of a multi-phase switch, rotates a common trip shaft 123 clockwise, whereby a slot 139 in a bracket 137 slips round .a projection 131 on shaft 123, under the action of a spring 145 strained by the projection 131 and biassing the bracket 137 anti-clockwise about its pivot 141. The cradle-latch 151 thus moves clear of a slot 149, the lower end of which is engaged by the descent of the cradle to reset the latch prior to the handle-lever being moved back to the closed position.
Patent GB-375593-A (GB)
Title: Improvements in or relating to parallel knitting machines
IPC: D04B7/04
Filed: 1931-07-31
Abstract: 375,593. knitting-machines. CESKA ZBROJOVKA AKCIOVA SPOLECNOST V PRAZE, 31, VßclavskÚ nßm, Prague. July 31, 1931, No. 21940. Convention date, Aug. 4, 1930. [Class 74 (ii).] The jacks 2 in the front bed of a parallel machine are displaced to produce patterned effects by a finger 12 which is caused to travel backwards or forwards along a shaft 9 from needle to needle by manipulation of two shift keys 6, 7. The key 6, when depressed, acts on one of a pair of opposed ratchets 26, 27 to turn a screw 13 and thereby rack a nut 14 a distance equal to the pitch of the needles. The nut 14 is connected to the finger 12 by an arm 15 and collar and carries a pointer traversing over a band 36 on which the pattern is drafted. When the key 7 is depressed the shaft 9 and finger 12 are rocked and by reason of the pin and slot connection 44, 45 between the operating links 11, 16 the screw 13 is also racked. The direction of movement of the screw 13 &c. is determined by hand-operated rods 28 which hold out of action one or other of the opposed pawls 23, 24. The screw 13 and nut 14 may be replaced by a spring-urged sliding rack. In another modification there are four keys which displace the arm 12 by varying amounts and permit of fourcolour work being made.
Patent GB-186778-A (GB)
Title: A folding ground seat
IPC: A47C9/10
Filed: 1921-08-18
Abstract: 186,778. Bradbury, T. G. Aug. 18, 1921. Folding seats; rests, back.-In a ground seat of the kind having side bars a, hinged ground bars d and adjustable struts c, together with a fabric sheet h, the side bars a are hinged to the cross-bar g so that they can be folded parallel thereto, for transport. The bars a may be retained in their unfolded position by braces b hinged to the bar g and engaging holes in the bars a.
Patent GB-332405-A (GB)
Title: Improvements in centrifugal apparatus for dust extraction
IPC: B04C7/00
Filed: 1929-07-18
Abstract: 332,405. British Rema Manufacturing Co., Ltd., and Howden, P. July 18, 1929. Density separators.- A dust extractor has two chambers A, B, Figs. 1, 2, each having cylindrical and conical parts. The dust-laden stream is led tangentially into the cylindrical part a of the outer chamber A; the over-size particles are separated out and drop to the discharge opening a<2>. The stream passes through the apertures b to the inner chamber B where its velocity is increased and the finer particles are separated out. The clean gas passes out through the pipe C the lower end of which is preferably situated above the apertures b. The separated particles collect at the bottom of the chamber until the pressure they exert is sufficient to operate the weighted flaps D. With this arrangement air from the outer chamber is prevented from passing through the dust outlet to the inner chamber, and re-mixing is avoided. The apertures b are controlled by pivoted vanes b<1>. In the modification shown in Fig. 5, a third chamber E is introduced thus classifying the dust particles in three sections which are discharged through the outlets a<2>, c<3>, b'. The vessels B, E may have weighted flaps of the type shown in Fig. 1 if desired.
Patent GB-1034708-A (GB)
Title: Folding car cover
IPC: B60J11/00
Filed: 1964-05-28
Abstract: 1,034,708. Car covers. J. G. TANNER. May 28, 1965 [May 28, 1964], No. 22080/64. Heading B7J. The U-shaped supports 5 of a car cover are pivotally mounted at each side of the vehicle on a plate 6 provided with a square section projection which fits the normal jacking sockets in the car to retain the cover in position. Cords 15 may support the arches and the cover and pads 14 are preferably secured to the centre arches to rest on the car roof.
Patent GB-1189955-A (GB)
Title: Oral Facial Exerciser
Inventor: ROBINS BETTY NADINE
IPC: A63B23/03
Filed: 1968-05-09
Abstract: 1,189,955. Facial exercising apparatus. B. N. ROBINS. 9 May, 1968, No. 22091/68. Heading A5R. An exercising device for strengthening the facial muscles is made of a plastics material or rubber composition, has the form depicted in Fig. I and is applied between the upper or lower lip and gum of the user. In the latter case the device may carry a plate 30, Fig. 6, to overlie the outside of the upper lip.
Patent GB-479590-A (GB)
Title: Improvements in the manufacture of types and blocks for rotary and flat bed printing machines
IPC: B41N6/00
Filed: 1937-08-12
Abstract: 479,590. Printing-surfaces. HOWARD, C. Aug. 12, 1937, No. 22136. [Class 100 (ii)] To permit of inserting interlays between a printing type or block I and its mounting block B instead of underlaying the mounting block, the type &c. I is provided with fixed screws A on its underside engaging in nuts C mounted in recesses in the block B. The Figure shows a section through the type I and block B. The nuts comprise a body part with a flange C<2> slotted to receive a screwdriver and a flange C<1> secured to the body of the nut by slightly expanding the end of the nut. By turning the nuts the type &c. may be raised to permit the insertion of the interlays.
Patent GB-442028-A (GB)
Title: Improvements in or relating to dynamo-electric machines
IPC: H02K1/18
Filed: 1934-07-30
Abstract: 442,028. Dynamo-electric machines. SWENDSEN, J. W., 9, Klingenberggate, Oslo, Norway. July 30, 1934, No. 22227. [Class 35] Cores; alternating-current induction machines.-The annular spirally wound core 22 of a dynamo-electric machine is secured to the casing by radial supports 27 formed of nonmagnetic material which are clamped between separable portions 4, 5 of the casing. The invention is described with reference to an induction motor having a rotor 8 on each side of the stator, each rotor carrying a winding formed of curved bars 10 and short-circuiting rings 12, 13 and a winding comprising straight bars 16 and short-circuiting rings 18, 19. The supports 27 are formed with a narrowed portion 28 and with heads 29 which engage recesses in the stator parts when these are bolted together. Nonmagnetic rustless steel in the form of laminations may constitute the supports, each being formed with a reduced portion 33 passing radially through channels in the stator core and secured by bending over as at 34. A ring winding is provided on the stator, and two coils on opposite sides of a support are connected by a wire passing through a notch 30 in the support. Openings 35, 36 admit cooling air and permit measurement of the air gaps 25, 26.
Patent GB-602753-A (GB)
Title: Improvements in or relating to temperature indicators
IPC: G01K1/14
Filed: 1945-08-30
Abstract: 602,753. Temperature indicators. STEVENS, A. H. (Republic Flow Meters Co.). Aug. 30, 1945, No. 22343. [Class 97 (iii)] The attainment of a predetermined temperature by a transformer or other device is recorded by an indicator comprising a translucent flexible mounting strip 14, temperature-sensitive material 25 carried by the mounting strip and held in intimate association with the surface 10 of the device and melting at the predetermined temperature, an indicating layer 23 of absorbent material, and a shield 26 for preventing false visual indication due to bleeding of said temperature-sensitive material. In the form shown, the temperature-sensitive material 25, on melting, passes through the perforated shield 26 and dissolves the dye 24 which, being absorbed into the layer 23 gives a stain visible through the mounting strip 14. The strip 14 has a sticky inner surface 15 for adhesive engagement with the surface 10 of the device and which is normally protected by a removable guard. The indicating layer 23 may be absorbent paper protected from the sticky surface 15 by a shield 22. The shield 26 may be of suitably treated paper or metal foil and may be perforated or blank. The backing 28 may be of grease-proof paper or metal foil. The discs are fastened together by two adhesive rings 31, 32 of, for example, a viscous solution of sodium silicate. In a modification, the dye is already mixed with the heat-sensitive material. Where the shield is a blank disc, the mixture passes round the edges giving a ring of colour on the indicating disc. Specification 551,783 is referred to.
Patent GB-336958-A (GB)
Title: Improvements in or relating to pencils
IPC: B43K29/087
Filed: 1929-07-22
Abstract: 336,958. Skinner, F. W. July 22, 1929. Calendars and date indicators.-Relates to pencils combined with calendars. A pencil a has impressed thereon the numerals 1 - - 31 arranged in seven rows and is provided with a cap b adapted to be rotated to bring the names of the days of the week marked thereon into register with the numerals on the pencil. A third set of marking is arranged on the cap and consists of the months arranged in order and adjacent each month, the name of the day on which the first of the month occurs. The positions of the various sets of markings may be changed. Specification 303,404 is referred to.
Patent GB-819476-A (GB)
Title: Improvements relating to chain derailleur mechanism for variable speed gearing of bicycles and the like
Inventor: HARRIS ALBERT EDWARD
IPC: B62M9/1248
Filed: 1955-08-04
Abstract: 819,476. Change-speed chain gear. CYCLO GEAR CO. Ltd. Oct. 17, 1956 [Aug. 4, 1955], No. 22404/55. Class 80 (2). In a cycle change-speed gear of the kind in which the drive-chain 3 is shifted laterally on to differentsized hub sprockets 24 by a single control cable 12 which, through a chain 10, shifts a tension-sprocket carrier 1 mounted on a post 5 slidably and turnable in a pivoted bracket 7, in opposition to the compression of a coil spring 13, which spring is also stressed in torsion to tension the drive-chain, loss of tension in moving from larger to smaller hub sprockets is compensated by causing the control cable 12 to turn the anchored end 16 of the spring. For this purpose the cable 12 passes round a free pulley 19 and is secured thereto by a lug 22 which abuts a projection 23 on a free cup-ring 18 engaged by the inner end 16 of the spring 13, the outer end 15 of which engages a cup-ring 17 fast with the tension sprocket carrier 1. Thus as the control cable 12 shifts the drivechain 3 towards the smaller hub sprockets 24, it also winds up the spring 13 to maintain chain tension.
Patent GB-888587-A (GB)
Title: Improvements in or relating to high-stability variable-frequency generators
IPC: H03B23/00
Filed: 1959-06-30
Abstract: 888,587. Frequency synthesisers; automatic frequency control systems. SIEMENS & HALSKE A.G. June 30, 1959 [June 30, 1958], No. 22422/59. Classes 40(5) and 40(6). A beat oscillator comprises a first oscillator variable in frequency stepwise over a relatively wide frequency band and a second oscillator variable over a band corresponding to a step, the output of the two oscillations being mixed to provide a difference frequency output and the second oscillator being manually variable by virtue of means for converting its output to a low intermediate frequency and means for automatically adjusting the frequency of the oscillator so as to reduce the difference between the intermediate frequency and the frequency of a manually adjustable low frequency oscillator. The Figure comprises a first oscillator 1 adjustable over the wide frequency band and a second oscillator 9 adjustable over a narrower band, the two oscillations being mixed in a mixer 8 to produce a difference frequency which is filtered at 10 and amplified at 17 to produce an output at 19. The first oscillator is maintained in operation at a selectable one of the harmonic frequencies of a crystal controlled oscillator 2 by means of a variable reactor 5 controlled by a discriminator 3. The output of an oscillator 9 is combined with the output of a crystal oscillator 12 in a mixer 11 and the resulting intermediate frequency is selected at 13 and applied to a phase comparator 15 together with the output of a interpolating oscillator 14, the phase comparator controlling a reactor 16 so that the intermediate frequency output the mixer 11 corresponds with that of the interpolating oscillator. Thus by varying the frequency of the interpolation oscillator the frequency of the output from terminal 19 may be, varied over a range equal to the difference between the harmonics of oscillator 2. The oscillator 12 may be replaced by an oscillation supply derived from the crystal oscillator 2. Frequency "wobbling" of the beat frequency oscillation output may be effected by disconnecting the automatic frequency control from oscillator 1 and varying the adjustment of a tuning member of the oscillator.
Patent GB-437138-A (GB)
Title: Improvements in or relating to carriers for recording sound or other oscillations
IPC: G11B11/00
Filed: 1934-08-01
Abstract: 437,138. Sound - record blanks. PHILLIPS-MILLER NAAMLOOZE VENNOOTSCHAP, Emmasingel, Eindhoven, Holland. Aug. 1, 1934, No. 22470. Convention date, Aug. 24, 1933. Drawings to Specification. [Class 40 (ii)] Relates to carriers for use in the method of recording sound or other oscillations in which use is made of a recording tool in the form of a chisel, e.g. a V-shaped chisel, which cuts a track of such a form in the carrier that the record obtained is suitable for optical reproduction. According to the invention, the carrier comprises a layer of a material such, for example, as gelatine, in which the records may be mechanically provided and which is substantially free from contaminating particles of the magnitude of 25 microns and larger which injuriously affect the recording and /or subsequent reproduction. The particles may be removed by centrifuging and /or by repeatedly filtering the material. As described, the carrier is in the form of a film constituted by a transparent underlayer of celluloid acting as a support for an intermediate layer of gelatine and an opaque top layer of graphite, paint, a photo-chemical emulsion or a metal colloid deposit. In this case, care is also taken that the material of the top layer is also substantially free from contaminating particles of the magnitude of 25 microns and larger and that the surface of separation of the transparent and top layers is so smooth that when the top layer is removed during recording, the transparent track produced does not contain particles of the opaque top layer. If desired, the carrier may be discshaped.
Patent GB-765486-A (GB)
Title: Improvements in the forming of carbon black dispersions
IPC: C09D17/00
Filed: 1954-08-03
Abstract: 765,486. Mixing carbon black with water. COLUMBIAN CARBON CO. Aug. 3, 1954 [Nov. 18, 1953], No. 22500/54. Class 86 [Also in Groups V and XXVI] A continuous process for producing aqueous slurries of carbon black of uniform composition comprises continuously charging the carbon black and water to one end of a confined elongated zone 1 of uniform and relatively small cross-sectional area, passing the mixture through the zone and at the same time subjecting it to the action of a multiplicity of rapidly rotating blades 24 having sharp forward edges and a top velocity of at least 3500 ft. per minute, mass rotation of the mixture with the rotating blades being. inhibited by stators 23, and continuously withdrawing the slurry from the mixing zone. The zone may have in addition one or more inlets, e.g. 21 and 22 for supply of latex to the mixture, the slurry-latex being coagulated immediately after withdrawal from the zone. The blades 24 are mounted in groups on a shaft 8 which extends through sealing members 2, 3, the cutting edge of each blade in a group being spaced from the corresponding cutting edge of the next blade by about 30 degrees. The blades are composed of four arms 27, the forward edge of each arm being a knife edge formed by bevelling. Preferably the bevelled surface of adjacent groups of blades face in opposite directions. In other arrangements the blades may have cutting edges bevelled on both sides, all the bevelled edges facing in the same direction. or both forward and backward edges sharpened. The seal at each end of the shaft 8 comprises graphite rings 28 sealed on to the member 2 or 3 by rubber rings 29. Steel members 30 rotating with the shaft 8 are forced against the rings 28 by coil springs 31 acting on bevelled steel members 32 and the intervening U- shaped rubber rings 33. Specification 705,344 [Group V] is referred to.
Patent GB-811849-A (GB)
Title: Improvements relating to pump impellers
Inventor: DAVIES JOHN GARFIELD
IPC: D06F39/08
Filed: 1955-08-06
Abstract: 811,849. Centrifugal pumps. PARKINSON COWAN Ltd., [formerly PARKINSON & COWAN Ltd.]. Aug. 2, 1956 [Aug. 6, 1955], No. 22710/55. Class 110 (1). A closed impeller of a centrifugal pump comprises widely-spaced blades the leading and trailing faces of which meet in a rounded apex and diverge towards the periphery of the impeller, the trailing face being straight and, at least near the apex, substantially tangential to a circle struck from the centre of the impeller. A centrifugal pump for a washing machine comprises an impeller having widely spaced blades 23, Fig. 4, with straight leading and trailing faces 26, 27 which subtend an angle of 25 to 90 degrees, but preferably 30 to 45 degrees, at the apex 30, which has a radius of curvature of 1/18 to 5/16 inch, but preferably 3/16 inch, for impeller diameters greater than 4 inch, or 0.03 to 0.06 of the impeller diameter for smaller diameters. The blade passages increase in cross-sectional area radially outwardly and are of constant or increasing cross-sectional dimension as viewed in Fig. 3. These features reduce the tendency to clogging by the accumulation of fibres. Preferably the apex 30 extends, as shown, in the direction of rotation beyond a radius normal to the trailing edge 27. The impeller is formed from two die-castings fastened together by integral rivets 29.