baber/WOPTO huggingface dataset:
Patent GB-806890-A (GB)
Title: Improvements in or relating to velocity modulation apparatus and electron guns therefor
IPC: H01J23/065
Filed: 1955-11-18
Abstract: 806,890. Velocity modulated tubes. WESTERN ELECTRIC CO. Inc. Nov. 18, 1955 [Nov. 29, 1954], No. 33079/55. Class 39(1). In a travelling wave tube or klystron convection current noise in the beam is reduced by a specially designed gun having a control electrode 23 for space charge limiting the electron flow, the control electrode 23 being spaced from the cathode by a distance short relative to the period of frequencies in the design band of the apparatus and convection current noise is still further reduced by a cavity resonator not excited by an external source and having the cathode and control electrode 23 forming opposite surfaces thereof. The control electrode 23 is located slightly closer to or further from the cathode than the potential minimum so that the control electrode 23 rather than the space charge minimum controls the current flow. The cathode-control electrode space is designed as a cavity resonator resonant at the mid-point of the design band. The resonator should be as close as possible to the cathode where the current and velocity fluctuations are uncorrelated so that the current fluctuations can be reduced without affecting the velocity fluctuations. To reduce noise velocity fluctuations a velocity jump gap 27 is provided between the first and second anodes but the velocity jump may be omitted in some cases at an A.C. velocity maximum. Control electrode 23, which carriers a fine wire grid, and beam forming electrode 24 may be integral. The helix 14 may commence at an optimum position to minimise noise ; for a klystron the buncher is similarly at a minimum noise position the buncher being at final anode potential. A longitudinal magnetic focusing field is provided which may include the gun region, or Brillouin flow may be used, e.g. 25A may be the magnetic shield for the gun. Attenuation may be provided by conventional lossy material or ferrite. Input and output coupling are provided by helices 15, 16, and the cathode and control grid may carry different D.C. potentials the control grid being the more negative while providing h/f continuity by means of insulating spacers 30 forming a choke or by a dielectric ring, Fig. 2 (not shown) in the wall of the cathode-control grid resonator. In Fig. 2 (not shown) the control electrode has no grid. Prior art velocity jump devices which are alleged to increase convection current noise are referred to. Specification 761,279 is referred to.
Patent GB-337195-A (GB)
Title: Improvements in and connected with advertising devices
IPC: G09F11/12
Filed: 1929-10-31
Abstract: 337,195. Changers (1929), Ltd., M., and Hubbard, C. I. Oct. 31, 1929. Reel and endless web apparatus ; endless chain and like carriers, apparatus with; actuating.-In advertising apparatus in which a display band is intermittently moved round sprocket wheels 11 the actuating mechanism comprises two oppositely disposed ratchet wheels 12, 13 fixed on the sprocket wheel shaft 10. A spring-controlled pawl 21 lying in a slot 20 in an arm 17 pivoted at 19 to the casing 18 engages the ratchet wheel 12. A spring-controlled pawl 15 on an arm 14 rotating about the shaft 10 engages the ratchet wheel 13, as also does a detent 24. When the arm 14 is raised it contacts with a projection 23 on the arm 17 and lifts the pawl 21 free of the wheel 12. On its retraction by a spring 25 the pawl engages the wheel 13 and turns the wheels 11. The arm 17 falls by gravity or by spring pressure, and the pawl 21 abuts against the next tooth of the wheel 12 to limit the movement of the arm 14 and to position the band. The arm 14 may be raised by a rod 28 reciprocated by the operating levers 26<a> of a note changing machine, or may be actuated automatically by a motor which rotates a cam which rocks a lever carrying at one end a toothed qudarant engaging a pinion mounted on the arm 14.
Patent GB-522480-A (GB)
Title: Improvements in or relating to agricultural tractors
IPC: A01B37/00
Filed: 1938-11-15
Abstract: 522,480. Agricultural tractors. STEPHENSON, & SONS, Ltd., G., and STEPHENSON, G. Nov. 15, 1938, No. 33204. [Class 6 (i)]  A tractor is provided, at the rear of the transport wheels, with one or more downwardly projecting cutters to break up the soil which has been compacted by the wheels. A bar 11 extends across the rear of the driving wheels 10 and carries a downwardly projecting tine 13 (shown in inoperative position) at each end in line with the wheel. Each tine comprises a steel bar 14 carrying a pointed flat plate 15 at the end. To raise the tines when the tractor is reversed or is travelling over a road, they are adjustably mounted in screw clamps 18 carried by spindles 17 which are rotated together by links 24, 25, 26 coupled by a bar 19 which is rotated by a handle 21. A catch 23 locks the handle to a quadrant 22. A scraper 28 is provided to remove soil from the wheel 10, and is arranged between two rows of projecting spuds 27. In an alternative, Fig. 3, the tine 13 is adjustable vertically in a support 31 to which it is pivoted at 30, so that in forward movement the upper end rests against a lug 16 while in backward movement the tine swings to inoperative position. A cam 35 carried by a spindle 17 is provided to move the tine positively to inoperative position when desired.
Patent GB-455113-A (GB)
Title: Improvements in or relating to cigarette lighters
IPC: F23Q2/08
Filed: 1935-11-29
Abstract: 455,113. Frictional pocket igniters. FLORMAN, I., 800, Riverside Drive, Grand Central Annex, New York, U.S.A. Nov. 29, 1935, No. 33205. Convention date, July 30. [Class 75 (iii)] The pivoted wick cap carrier 32, is con nected by a spring 44 with the hingec lid 24 and is held ir the closed position by a shoulder 48 thereor engaging a pin 50 or a pivoted spring-pres sed latch 52 so that, on opening the lid 24 as by means of the thumb, the wick-car 34 remains closed and the spring 44 is stressed until a pin 60 on the lid disengages the latch and the wick-cap is snapped open by the spring, the friction wheel being simultaneously operated through a one-way ratchet coupling with the carrier 32. The closing movement of the carrier 32 is effected by the lid 24 engaging the wick-cap 34 until the pin 46 engages an extension 47 of the carrier to complete the movement.
Patent GB-521499-A (GB)
Title: Improved holder for dynamos for cycles and other light vehicles
IPC: B62J6/06
Filed: 1938-11-15
Abstract: 521,499. Dynamo mountings. ELEKTROTECHNISCHE FABRIK SCHMIDT & CO. GES. Nov. 15, 1938, No. 33236. Convention date, Nov. 16, 1937. [Class 35] A holder for a cycle or similar dynamo 1 comprises a bracket 5 with a bearing 3 for the pivot 2 of the dynamo adapted to be fastened to a supporting part of the cycle by means of a clip 6, which is mounted on the bracket so as to be angularly adjustable in relation thereto; the clip has a concave surface and the bracket a substantially plane surface, so that the bracket can be angularly adjusted with respect to the clip, thus allowing adjustment of the dynamo pivot with regard to the cycle. To allow this adjustment, the clip has a slot 10 through which the bracket is passed and at the other end, an arcuate slot 9 receives a bolt carried by the bracket. A screw 7 electrically connects one pole of the dynamo to the cycle frame.
Patent GB-1337105-A (GB)
IPC: A61K9/00
Filed: 1972-07-17
Abstract: 1337105 Eye wash compositions FLOW PHARMACEUTICALS Inc 17 July 1972 [26 July 1971] 33261/72 Heading A5B An aqueous eye wash solution contains (a) a cellulosic polymer in sufficient amount to provide a viscosity of 15-750 cps at 25C, (b) sodium chloride and/or potassium chloride in sufficient amount to make the solution hypertonic relative to 0.9% sodium chloride solution but not hypertonic to 1.8% sodium chloride solution, (c) an amount of preservative just sufficient to prevent microbial growth, (d) a biological buffer agent in sufficient amount to provide a pH of 7.1-9.5 and (e) a minor amount of an alkali metal acetate, glutamate, ketoglutamate, succinate, lactate, gluconate, citrate, pyruvate, oxaloacetate, malate or fumarate. The cellulosic polymer may be hydroxyethyl cellulose or methyl cellulose. The preservative may be benzalkonium chloride or chlorhexidine. The buffer agent may be sodium bicarbonate. Component (e) may be sodium acetate prepared in situ by the reaction by the reaction of polyvinyl alcohol with sodium bicarbonate. The compositon may also include sodium edetate.
Patent GB-409244-A (GB)
Title: Massaging appliance
IPC: A61H7/00
Filed: 1933-11-28
Abstract: 409,244. Massage apparatus. HOYER, S., 2, Hafrsfjordsgate, Oslo, Norway. Nov. 28, 1933, No. 33327. Convention date, Dec. 12, 1932. [Class 81 (ii).] An appliance for massage, particularly of the abdomen, comprises a rigid heavy body 1, having a bowl-shaped surface, preferably covered with a heat-insulating cover 2 of rubber, cloth or the like, and provided with an upwardly extending handle 4, the centre of gravity 5 being at a distance from the massaging surface less than the radius of curvature of the middle part of the latter so that, when the appliance is tilted, the restoring force acts to stretch the skin. The radius of curvature may diminish in all directions from a maximum at the centre. The body 1 may be of lead or a lead alloy or of heat-insulating material, such as wood pulp or synthetic resin, with a lead core. Its maximum thickness or depth may be from 1/20 to nearly ¢ of its greatest diameter or width. The rim of the body may project beyond the upper surface. The total weight is from 2 to 8 kg., 4 kg. usually being suitable.
Patent GB-506671-A (GB)
Title: Improvements in the automatic control of the speed of electrically driven winding reels
IPC: B65H23/198
Filed: 1937-12-02
Abstract: 506,671. Automatic control systems. BRITISH THOMSON-HOUSTON CO., Ltd., and RAYDEN, R. G. Dec. 2, 1937, No. 33372. [Class 38 (iv)] [Also in Group XXXVII] Speed.-The linear speed of material G being wound on an electrically driven reel H is maintained approximately constant at a preset speed. A tachometer generator E is driven at a speed proportional to that of the material, preferably by pinch rolls F, and connected in series with a relay a and a resistance D by which the speed at which the relay responds may be preset. A speed indicating instrument may be connected across the generator armature. On starting, the relay a closes contacts causing a " raise " contactor 2 to drive a brush adjusting motor L in a direction to accelerate the reel motor K. When the preset speed is reached the relay responds to open the aforesaid contacts and to close contacts in series with a " lower " contactor 3 which reverses the motor L and subsequently repeats this operation so as automatically to lower the speed of the reel motor as required to maintain the desired speed of the material being wound. Fig. 2 shows a system including switches for inching the reel motor in forward and reverse directions. Closing the forward inching button T energizes the forward contactor 1F but does not energize the raise speed contactor 2 ; forward inching can only proceed at slow speed. Closing the reverse inching button U energizes the reverse contactor 1R which also energizes the " raise " contactor 2 through normally open interlock 1R; when button U is released the brushes of the reel motor are returned to " off " position by the normally closed interlock 1R in series with " lower contactor 3 and limit switch LSL.
Patent GB-808481-A (GB)
Title: Pneumatic safety tyre
Inventor: WRIGHT JOSEPH
IPC: B60C5/00
Filed: 1954-11-18
Abstract: 808,481. Pneumatic safety tyres. DUNLOP RUBBER CO. Ltd. Nov. 1, 1955 [Nov. 18, 1954], No. 33378/54. Class 144 (2). A pneumatic safety tyre assembly comprises two tyres constructed as described in Specification 786,162 and dimensioned so that one is nested within the other, on a common wheel rim, to leave an air-space therebetween. As shown the two tyres are tubeless with the edges of the inner tyre spaced from those of the outer tyre by rubber or metal spacers 11 which may be completely separate, or may be integral with either of the two tyres and, if desired, cemented to the other. For use on aircraft, each tyre has its own separate inflation valve and when mounted on a split rim, a sealing gasket 12 is located between the rim parts for airtightness. Fig. 3 shows a split well-based rim wherein the welt base 14 is axially offset from centre and seats the edges of the inner tyre so that one sidewall thereof abuts the adjacent edge of the outer tyre. This arrangement facilitates the provision of separate inflation valves. For road vehicle use, the two tyres may intercommunicate with the inner tyre only provided with an inflation valve.
Patent GB-1515807-A (GB)
Title: Spin pots for the extrusion of synthetic filaments
IPC: D01D4/00
Filed: 1976-08-11
Abstract: 1515807 Spinneret ALLIED CHEMICAL CORP 11 Aug 1976 [11 Sept 1975] 33482/76 Heading B5B Top cap 16 and filter assembly 15 are so designed to form a distribution space 31 therebetween and breaker plate 13 and spinneret plate 12 to form a distribution space 20 therebetween. The top cap 16, breaker plate 13 and flange means 11 are connected by bolts 17 through their peripheries only. Flange means 11 in the form of a clamp ring supports the plate 12. Top cap 16 comprises a projection 25, a flow inlet passage 26, and delivery channels 27. Projection 25 has the same shape as recess 21 and a recessed portion 29 at its lower face which leaves a peripheral portion 30 to bear on the peripheral filter assembly 15. The lower surface 28 of cap 16 bears on the non- recessed top surface 22 of breaker plate 13.
Patent GB-1355271-A (GB)
Title: Glass container handling apparatus
IPC: B65G47/82
Filed: 1972-07-18
Abstract: 1355271 Pivotal pushers for feeding endless conveyers MAUL BROS Inc 18 July 1972 [13 Oct 1971] 33512/72 Heading B8A A pusher plate 76 is rotated through 90 degrees to push glassware 16 from a dead plate 12 on to a conveyer 14, the plate 76 being extended into a pushing position during its forward rotation and being retracted from said position during its return rotation. The pusher plate 76 is extended and retracted by means of a piston 54 housed in a cylinder 52 formed in the upper section 38 of a housing mounted for 90 degrees rotation about a centre post 28, the piston 54 being pivotally connected to the pusher plate 76 through a linkage 60, 62, 66. The housing section 38 is connected for rotation with a lower housing section 39 by a spring urged ball 46 which releasably engages a bore 47 in the housing section 39, the housing section 39 being rotated through 90 degrees by a barrel cam 88 having a track 90 in which a follower 91 runs. The follower 91 is mounted intermediate the ends of an arm 92 pivoted to a fixed bracket 93 and connected to a boss 97 on the housing section 39 by an adjustable link 96. The centre post 28 is clamped between a top plate 30 and a flange 26 on a mounting bracket 18. A wear plate 35 is disposed between the housing section 39 and the flange 26, and has four apertures operative to connect one side of the cylinder 52 to a pressure line and the other to atmosphere according to the position of the housing and the wear plate.
Patent GB-284207-A (GB)
Title: A catching, gathering, conveying, directing and depositing element for butter churns
IPC: A01J15/08
Filed: 1927-12-12
Abstract: 284,207. O'Connell, J., and Kerr, H. H. Jan. 24, 1927, [Convention date]. Rotary mixers.-A rotary butter churn is provided with one or more adjustable butter-catching &c. elements consisting of angular, plate-like elements projecting radially through the wall of the churn and adjustable on their stems. The stem 7 of the element 14, 15 is carried in a tubular bearing 3 and on its outer end is furnished with a sector 18. A pin 20 is passed through one of a number of holes in the sector into a hole in a fixed plate 4 formed in one with the sleeve 3; by these means, the angular position of the blades can be adjusted.
Patent GB-912748-A (GB)
Title: Dithiophosphonic acid esters
IPC: A01N57/18
Filed: 1960-09-30
Abstract: The invention comprises compounds of formula <FORM:0912748/IV (b)/1> where R is C1-6 alkyl or cycloalkyl, phenyl, (C1-4 alkoxy)-phenyl, or halophenyl, -CHR1R2 is a branched chain alkyl group of up to 12 C or a cycloaliphatic group of up to 6 C, R3 is C1-4 alkyl substituted by one of the following groups: alkylmercapto, halophenylmercapto, halophenyl, di - (C1-4-alkyl)amino, carboxylic ester, carboxylic amide, or cyano, or is a <FORM:0912748/IV (b)/2> group where X is -CH2- or -CH2-S-CH2-. They may be prepared by reacting a dithiophosphonic acid anhydride <FORM:0912748/IV (b)/3> with a secondary alcohol R1R2CHOH and reacting the resulting thiol acid R-P(S)(SH)(OCHR1R2) with an appropriate alkyl halide or dihalide. Intermediate compounds of the type R-P(S)(SH)(OCHR1R2) additional to those disclosed in Specification 912,747 are ones in which: R1 = R2 = CH3 and R = i-propyl, cyclohexyl, phenyl or p-chlorphenyl; R1 = CH3, R2 = C2H5 and R = CH3 or C2H5; R = C2H5, R1 = CH3 and R2 = C(CH3)3; - CHR1R2 = cyclohexyl and R = CH3 or C2H5. Specifications 806,148, 847,550, 878,729, 894,740 and 898,313 also are referred to.ALSO:Insecticidal compositions comprise dithiophosphonic esters of formula <FORM:0912748/VI/1> where R is C1-6 alkyl or cycloalkyl, phenyl, (C1-4-alkoxy) phenyl, or halophenyl, -CHR1R2 is a branched chain alkyl group of up to 12C or a cycloaliphatic group of up to 6C, R3 is C1-4 alkyl substituted by one of the following groups: alkylmercapto, halophenylmercapto, halophenyl, di(C1-4 alkyl) amino, carboxylic ester, carboxylic amide or cyano, or is a <FORM:0912748/VI/2> where X is -CH2- or -CH2-S-CH2-, together with a solid or liquid carrier.  Known insecticides and/or fertilizers may be present.  Specified solid carriers are talc chalk, bentonite, kiesulguhr and specified liquid carriers are alcohols, hydrocarbons or chlorinated hydrocarbons e.g. chloroform or trichlorethylene admixed with water and an emulsifier or auxiliary solvent e.g. benzyl or aryl hydroxy polyglycol ethers or dimethyl formamide. Specifications 806,148, 847,550, 878,729, 894,740, 898,313 and 912,747 are referred to.
Patent GB-329355-A (GB)
Title: Improvements relating to gas fires
IPC: F24C3/04
Filed: 1928-11-17
Abstract: 329,355. Radiation, Ltd., and Yates, H. J. Nov., 17, 1928. Gas fires; radiants.-A gas fire comprises luminous flame burners b, the flames of which are exposed in a position adjacent the burners, and the hot gases from which pass into a passage or chamber over one side of which is arranged a mass of refractory material e, which is rendered incandescent. The stove shown is provided with a grid c, through which the flames are visible, and a horizontal reflector h. The gases pass into a rearwardly-inclined passage formed between the firebrick or like backing j and a perforated plate d which supports the refractory material. The combination of exposed luminous flames and incandescent material is stated to give a more satisfactory range of radiation frequencies than gas fires employing non-luminous flames. The refractory mass may be of material of low thermal conductivity, such as fireclay, or of relatively high conductivity, such as carborundum or metal, which becomes more uniformly heated, but to a lower temperature. It is stated that combustion is completed at the refractory mass, which functions as a catalyst. Specifications 668/87 and 4726/89 are referred to.
Patent GB-617855-A (GB)
Title: Improvements in shock absorbers for bicycles and the like
IPC: B62K25/20
Filed: 1946-11-14
Abstract: 617,855. Spring forks. ZEALE, R. W. A., and ZEALE, R. T. Nov. 14, 1946, No. 33814. [Class 136 (iii)] A shock-absorber for a cycle hub of the type described in Specification 128,500, [Class 136 (ii)], in which the hub is off-centre with respect to the axle, consists of a rod A pivoted at B to the part C which is connected to the eccentric K of the hub, the upper end of the rod passing through a bracket D on the stay E against which bear springs F and G surrounding the rod and bearing against abutments H on it.
Patent GB-462762-A (GB)
Title: Improvements in or relating to cut-off valves for gas burners
IPC: F16K17/00
Filed: 1935-12-06
Abstract: 462,762. Gas cut-off valves. HORSTMANN, B. G., HORSTMANN, J. H. G., and HORSTMANN GEAR CO., Ltd. Dec. 6, 1935, No. 33868. [Class 135] A gas cut-off valve of the kind which closes automatically when the inlet pressure is reduced and remains closed when normal pressure conditions are restored, being either opened by an abnormal increase in inlet pressure and /or manual means, has both inlet and outlet connections axially in line with the valve member. In the form shown in the Figure the weighted hemispherical valve member 7 is secured to a diaphragm 8 clamped between an upstanding flange 6 on the base plate 3 and an inner cover 9. to provide an inner gas chamber 11 and an air chamber 10 connected to atmosphere by a passage 16. The flange and inner cover are enclosed in an outer casing 12 to form a gas chamber connected by passages 15 to the inner gas chamber and to the outlet conduit by a passage 13. For opening the valve manually a lever 19 is pivoted to ears on the base plate and is adapted to actuate a spring-loaded sliding member 18 bearing against the valve member. The device may be automatically locked in the closed position.
Patent GB-1212499-A (GB)
Title: Electret and method of making it
IPC: H01G7/02
Filed: 1969-07-04
Abstract: 1,212,499. Electrets. NETHERLANDS APPLIED SCIENTIFIC RESEARCH FOR INDUSTRY, TRADE & COMMERCE. 4 July, 1969 [10 July, 1968], No. 33876/69. Heading H1M. An electret is made by arranging a strip of dielectric material with its one metallized surface in contact with the unmetallized surface of a second strip of dielectric material having its other surface metallized and applying an electret-forming voltage between the metal layers while the strips are heated and allowed to cool. The dielectric material may be polyethylene terephthalate, polypropylene, polyimide, polycarbonate, polytetrafluoroethylene, polyfluoroethylene propylene, polymethylmethacrylate or derivatives of the latter. The strips are preferably coiled together in a double spiral and in this case, after formation the strips may be uncoiled and separated to form two electrets.
Patent GB-360677-A (GB)
Title: Improvements in hinge pins
IPC: E05D5/12
Filed: 1930-11-11
Abstract: 360,677. Hinge pins. POLLOK, J. C., 14, Muir Street, Hamilton, Lanarkshire, and McERLANE, D. A., 9, Carbrook Street, Garngad, Glasgow. Nov. 11, 1930, No. 33904. [Class 65 (ii).] A hinge pin is formed of resilient metal strip of semicircular section having at least one end doubled over and slightly offset from the axis in its unstrained condition so as to engage frictionally in the eye of one hinge member and resist rotation, the pin being fixed in the other member. As shown in the Figure, both ends of the strip are doubled over, one end 1<2> being closed right up to the main position 1 while the other end 1<1> is arranged to press outwardly against the hinge eye. The part 1<2> has a recess 4 to engage with an inward projection on the hinge eye, to prevent rotation in the eye ; alternatively, the pin may have a projection entering a recess in the eye. The bent ends may lie on opposite sides of the pin, or one part of the pin may be of circular section, the other part only being doubled over. Heads may be attached to or formed on the bends. The pin may be tapered.