baber/WOPTO huggingface dataset:
Patent GB-1068648-A (GB)
Title: Internal shoe drum brake
IPC: F16D65/22
Filed: 1965-04-15
Abstract: 1,068,648. Internal shoe drum brakes. SOC. ANON. D.B.A. April 15, 1965 [April 20, 1964; March 26, 1965], No. 16313/65. Heading F2E. An internal shoe drum brake of the kind having both ends of each of two shoes 4, 6 actuable by a pair of hydraulic cylinders 18, 20, each cylinder having two pistons 26, 28 engaging directly, or via rollers 56, respective lugs on the shoe webs, the shoes are arranged to operate as a two-trailing shoe brake in both directions of rotation of the drum by the provision of slots (14), 16 in the opposite ends of the web of each brake shoe, two of these ends being cranked to enable the webs to overlie each other and the slots being shaped such that pins 10, 12 secured to anchor plate 6 each engage in a slot (14) of one shoe (Fig. 7, not shown) and a slot 16 of the other with both circumferential and radial play, whereby the shoes can move radially to align themselves with the drum in addition to anchoring automatically at their trailing ends. Each slot (14), whose edge 44 nearest the extremity of the shoe web engages the respective anchor pin in the forward direction of rotation f, has this edge formed as a ramp inclined at an angle of about 15 degrees to the line joining the pins 10, 12, so that the reaction of the pin on the shoe passes through the centre of pressure of the lining on the drum, while the corresponding edge 46 of each slot 16 is inclined at an angle of about 45 degrees to this line so that the pin cams the shoe over towards the adjacent side of the drum during reverse braking, so reducing the shock when the shoes move circumferentially. Further cushioning is provided in both directions of circumferential movement of the shoe, when changing from one direction of rotation to the other, by providing within the cylinders 18, 20 domed partition members 30, each having a restricted aperture 41 to retard flow of fluid from the chamber 37 on one side of member 30 to the other chamber 39, and vice versa. Chambers 39 of the two cylinders are interconnected by external piping, the lower one of chambers 37 being connected to the hydraulic feed and the higher one having a bleed hole sealed by a removable plug.' Any air bubbles pass to the latter chamber 37 since the domed shape of partitions 30 facilitates their passage through the apertures 41. The lugs of the shoes co-operating with the pistons are of unequal length so that pistons 28 are further in than pistons 26 in the brakes released position. This allows for greater lining wear of the trailing end of the lining in the forward direction of running and the fact that return springs 32 bias the shoes towards the forward running position. Manually-operated cams 43 are provided to adjust for lining wear, such adjustment reducing the amount of circumferential movement of the shoes when braking in the reverse direction. Hold-down clips 40 for the shoes pass through apertures 38 in the shoe webs.
Patent GB-1385596-A (GB)
Title: Anthanthrene derivatives and a method of producing same
IPC: C09B5/00
Filed: 1973-04-05
Abstract: 1385596 Anthranthrene compounds N S DOKUNIKHIN G N VOROZHTSOV F I KICHINA and N B FELDBLUM 5 April 1973 16438/73 Heading C4P The invention comprises anthranthrene compounds of the general formula wherein alk is C 1 -C 10  alkyl X is (a) or -CO-Y-CO- where Y is an oxygen atom or >NH or NR in which R is alkyl, cycloalkyl or aryl, or aryl substituted by alkoxy or halogen or is a group where R<SP>1</SP> is H, halogen or alkoxy. They are prepared by cyclizing compounds of the general formula wherein Z is >CHOH or >CO and alk and X are as defined above in presence of condensing agents, e.g. phosphorus oxychloride, phosphoric acid, alcohol-HCl mixture, sulphuric acid, mixture of acetic and HBr, NaOH and KOH. A reducing agent may also be present.
Patent GB-728342-A (GB)
Title: Improvements in or relating to dispensers for retaining rings
IPC: B25B27/20
Filed: 1953-06-16
Abstract: 728,342. Dispensing retaining rings WALDES KOH-I-NOOR Inc. June 16, 1953 [July 14, 1952], No. 16559/53. Class 117. An apparatus for dispensing retaining rings comprises a base 22 carrying a rod 18 on which a plurality of retaining rings can be arranged as a stack, the bar having a slideway 23; a tool 11 for effecting withdrawal of a ring of the stack disposed next adjacent the face, the tool having a ring clamping portion 14, 15 providing a part circular ring sealing recess and a backing flange 16 for supporting a ring seated in said recess, and means 24 engageable by said tool upon insertion of the latter in the slideway and, on travel of said tool along said slideway, causing the tool to seat and clamp said ring in its recess and thereupon to effect withdrawal of said ring from the stack together with the tool. As shown, the hand tool 11 is pushed into slideway 23 so as to grip the ring lying therein, the forward movement of the tool causing slide 24 to be pressed inwards against spring 25 until the recess 27 of the slide comes under the rod 18 whereby the lowermost ring thereon is free to fall into said recess. The subsequent withdrawal of the first ring with the tool permits the slide to advance the second ring till the latter falls into the slideway 23 in place of the first ring. Lug 33 extends into the rings on rod 18 so as to maintain their orientation. Rod 18 is held in place by screw 22A. Alternatively, the slide 24 may be moved forwardly towards the tool to present the ring to the latter (by lever or by rack-and-pinion mechanism); or the said slide may be dispensed with and the slideway 23 fitted with an incline whereby the tool may rise to grip a ring and subsequently to withdraw it.
Patent GB-981596-A (GB)
Title: Method and apparatus for coating articles by fluidized bed coating process
IPC: B05D1/24
Filed: 1961-05-08
Abstract: 981,596. Coating surfaces; coated metal strips. POLYMER CORPORATION. May 8, 1961 [May 9, 1960], No. 16597/61. Headings B2B and B2E. [Also in Division D1] Aluminium and steel tubes, pipes, strips, rods and wires are coated by passing the body 32 to be coated through fluidized bed 14 and reducing the pressure on the fluidized bed while the body is being passed through it, to prevent the escape of coating material through the openings 29, 30 through which the body 32 passes. The pressure on the bed is reduced by pump 27. The body may be heated in an oven or by induction coil 31 positioned outside the bed 14 or inside the bed (Fig. 8, not shown), and may also be postheated. At the openings 29, 30 there may be additional means for preventing the escape of coating material, e.g. air jets or a sealing ring. At the exit opening cooling means may be provided. The body 32 is passed through the bed 14 by rollers 33 and may be rotated at the same time. A hopper may be connected to the fluidized bed container to replenish the coating material. The fluidization may be carried out by pump 27 with or without applying positive pressure from below plate 12. Coating material withdrawn from the top of the container may be collected and returned thereto. The coating material may comprise polyethylene, polyamides, acrylic resins, polystyrene, gilsonite, asphalt, phenol formaldehyde resins, shellac and wax. Fillers which may be present include asbestos, slate, metal and polytetrafluoroethylene.
Patent GB-947170-A (GB)
Title: A relief valve unit
Inventor: NOE OSKAR
IPC: F16K17/04
Filed: 1960-05-11
Abstract: 947,170. Valves. BWG BERGWERKUND WALZWERK-MASCHINENBAU G.m.b.H. May 11, 1960, No. 16623/60. Heading F2V. A pressure relief valve unit comprises two or more pressure relief valves 13, 14, Fig. 2, accommodated in a common housing 12 having an inlet opening 16, the valves being controlled by a common spring 15. Liquid flows through bores 16 and 21 into a compartment 20 to displace a housing 19 to the left until a valve 14 is opened by engagement with a screw 23 to allow liquid to escape through a bore 24 and a passage 17 to an outlet 18. If the pressure increases more rapidly than it can be reduced by the valve 14, shoulders 28 and 29 engage so that the pressure of the liquid on a face 26 is offset and a housing 13 is displaced to the left by the pressure on a shoulder 25 to provide a larger outlet for the liquid. In Fig. 3, liquid enters through bores 33 and 34 to displace a housing 39 to the right until a valve 31 is lifted from its seat by a stop 37. Further increase in pressure causes a shoulder 40 to engage a stop 41 so that the fluid pressure on a face 44 is compensated and a housing 32 is moved to the right by the pressure on a shoulder 45 to provide a larger outlet. The operating range of the valve may be adjusted by altering the setting of a spring 36 and a screw 38. In a third construction two closure members, one of which is provided with a compensating piston, are arranged at opposite ends of a common spring. All of the constructions are provided with mechanical actuation means.
Patent GB-781717-A (GB)
Title: Ship's fore body form
IPC: B63B1/06
Filed: 1955-06-09
Abstract: 781,717. Ships' form. MAIER, E. R. F. June 9, 1955 [June 19, 1954], No. 16629/55. Class 113. In a ship's fore body of Maier form having parallel triangular frame sections, the foreship is given at the bow a deadwood or skeg a so that the position of the centres of area and the individual sectional areas of the frame sections remain the same as with a Maier form foreship without deadwood so that the lower water lines are given the form of an S curve, and the position of the centre of buoyancy remains in the same longitudinal position. The front edge of the deadwood or skeg forms an angle of not less than 20 degrees to the vertical while the bottom edge slopes up forwardly at about 5 degrees. Specifications 157,993, 290,964 and 290,965 [all in Class 113(ii)] are referred to.
Patent GB-962647-A (GB)
Title: Improvements in or relating to the generation of electric oscillations
Inventor: OAKES FRANCIS
IPC: H03B5/00
Filed: 1960-05-11
Abstract: 962,647. Frequency changing. FERGUSON RADIO CORPORATION Ltd. July 3, 1961 [May 11, 1960], No. 16635/60. Heading H2F. [Also in Division H3] A frequency conversion system comprises a switching circuit which connects an A.C. power source to a smoothing circuit when the magnitude of a lower frequency reference voltage is less than that of the power source and greater than that of the smoothing circuit whereby power at the reference frequency is supplied to a load connected across the smoothing circuit. In Fig. 1 a source of power at a frequency of 4 kc/s. is applied at terminals 10 and 12 and 18 is a reference source of 50 cycle frequency. Transistors 15 and 16 conduct when the reference voltage magnitude is less than the power source voltage but greater than the voltage across the output smoothing circuit 20 so that the output power is derived from the input power source but the output voltage is of the frequency and waveform of the reference voltage. Diodes 14 prevent the transistors conducting in the forward direction of the collector diode and a resistor 17 prevents source 18 being unduly loaded when the collector voltage falls below the reference voltage. Fig. 2 shows an alternative embodiment in which the transistor switches (represented at 21) are controlled by comparators 22. Thus, switch 21 is rendered conductive by comparator 22 when the instantaneous voltage applied to the comparator from the 4 kc/s. generator is greater than the voltage applied to the comparator from the reference voltage source provided operation of the comparator is not inhibited by a further comparator 23 which provides the inhibiting voltage when the reference voltage is less than the load voltage. In a further embodiment (Fig. 3, not shown) each of the switches 15, 16 of Fig. 1 is duplicated to provide full wave operation so that the 4 kc/s. frequency current in the load is reduced. In addition an inductor in series with the load further reduces the 4 kc/s. output component. It is also stated that switching arrays common in power rectification practice may be used, for example full wave and bridge arrays and that such arrays may be used with a polyphase reference and separate phase filtering may be provided so that a polyphase lowfrequency supply may be provided from a single phase or polyphase high-frequency source.
Patent GB-1010270-A (GB)
Title: Improvements in or relating to collapsible carrier bags
Inventor: WEISBROD RICHARD MAX
IPC: A45C7/02
Filed: 1963-04-29
Abstract: 1,010,270. Bags. ZURRER SILKS (DARWEN) Ltd. April 28, 1964 [April 29, 1963], No. 16667/63. Heading A4G. A collapsible carrier bag is carried by transverse members 9 between end frames 5, 6 pivoted at 7 and assuming a cruciform shape when the bag is open, cords 14 being secured to the vertical corners of the bag and having an intermediate unsecured portion equal to the bag width which passes through holes 15, 17 in each leg of an end frame and through a loop 16 on the bag so as to be taut when the bag is fully open. Transverse frame opening handles 8, bag handles 19 and internal pockets 18 are provided.
Patent GB-743871-A (GB)
Title: Improvements in or relating to the manufacture of edible dough products
IPC: A21B5/00
Filed: 1953-06-17
Abstract: 743,871. Coating bakers' goods. VICARS, Ltd., T. & T., JACOB & CO., Ltd., W. & R., JENKINS, J. B., NAYLOR, J. F., and LEWIS, C. Y. June 16, 1954 [June 17, 1953], No. 16676/53. Class 28(1). Liquid fat is dispersed by spraying and is combined with a dispersion of flour particles as part of a continuous operation performed in close proximity to the surface of a dough sheet during which operation the fat and flour are applied to the surface. As shown in Fig. 1, flour dusting units 1, 2 are placed so as to dust flour on to the upper surface of a dough sheet 13 moving on a conveyer. Between dusters 1, 2 is positioned a fat sprinkler 3 movable on castors 3a. The sprinkler comprises a tank heated by an element and having an inclined bottom from adjacent the lowest part of which fat is taken up through a pipe 6a by a motor-driven gear pump 6 and delivered through a pipe 6b to a spray tube 7. Tube 7 has a heater 8 and extends across the dough sheet having a series of nozzles through which the fat is ejected. Means for cleaning the nozzles, a pressure gauge 10, a control valve, draining cock 12 and release valve may be provided. In an alternative construction, Fig. 3, a rotatable drum 15 is mounted transversely above the conveyer band and a similar melted fat supply unit is provided with two spray tubes 16, 17 substituted for the single tube 7. A flour dusting unit 18 is supported above the drum between the tubes 16, 17. Thus when the drum is rotated clockwise it acquires a layer of flour and fat which is scraped off by an oscillating scraper 19 and deposited on the dough. A cooling medium may be circulated through the hollow space in the drum.
Patent GB-707047-A (GB)
Title: A machine for separating sheets of paper or the like from the top of a pile
IPC: B65H3/48
Filed: 1950-07-04
Abstract: 707,047. Feeding sheets. BACKHOUSE, H. T. June 25, 1951 [July 4, 1950], No. 16704/50. Class 100 (1) Sheet-separators.-Apparatus for separating sheets from the top of a pile 1 comprises means 63 for directing air blasts at the back of the pile whilst the corners are held by means such as arms 102 having sharp edges 103, or sharpedged wheels, whereby the pressure of the air on the undersurface of the top sheet causes the intermediate raised portion of the sheet to be stretched against the frictonal grip of the arms 102. The arms 102 are secured to a shaft 101 which is rocked by a cam 104, roller 105, and link 106. The air blast fluffs-up the top sheets towards flips (not shown), which separate the top sheet from underlying sheets, suction grippers 19 descend to grip the top sheet and withdraw it from under the edges 103, the air blast from the nozzles 63 is then cut off, the arms 102 raised, and a presser-foot (not shown) is lowered on to the pile. An additional air blast preferably in the presser-foot, may be directed under the top sheet to assist separation thereof. Instead of a sharp edge 103, each arm 102 may have a sharp-edged wheel thereon mounted for free rotation or provided with an adjustable friction brake. Specification 707,043 is referred to. Specification 707,044 also is referred to.
Patent GB-480098-A (GB)
Title: Improvements in or relating to imitation fuel fires
IPC: A63J5/02
Filed: 1936-06-16
Abstract: 480,098. Imitation fires. FERRANTI, Ltd., and FIRTH, J. P. June 16, 1936, No. 16710. [Class 126] Imitation fuel comprises a shell made partly or wholly of translucent material part or all of the surface of which has applied to it separate irregular pieces of a soft translucent substance having an irregular texture, to simulate burning fuel, ashes, cinders, &c. The shell may be made as described in Specification 465,528, or from cellulosic sheet material, textile material, or wire gauze. Lumps, strips, or pieces of cellulose wadding or thin blotting or other unsized paper are attached by adhesive to the material of the shell, before or after shaping of the latter. 'Protective lacquer and finally colouring are applied. Specification 413,369 also is referred to.
Patent GB-594340-A (GB)
Title: Improvements in or relating to hydraulic control systems
IPC: F15B9/03
Filed: 1943-10-12
Abstract: 594,340. Regulating - switches. WESTINGHOUSE ELECTRIC INTERNATIONAL CO. Oct. 12, 1943, No. 16749. Convention date, Dec. 24, 1941. [Class 38(v)] [Also in Groups XXI and XXIX] A switch for controlling the actuation of a fluid-pressure servomotor (see Groups XXI and XXIX) comprises two banks of flexible contact members 87 and an actuator 89 which when moved by manual or other means to one side or the other, progressively closes the contacts of the bank on the side towards which it is moved and allows the contacts of the other bank to open. Specifications 527,839; 590,682, and 590,722, [both in Group XXXV], are referred to.
Patent GB-258683-A (GB)
Title: Improvements in and relating to rotary engines, pumps and the like
IPC: F01C1/344
Filed: 1926-03-18
Abstract: 258,683. Ralston, A. A., Beck, H. J., and Rimmer, C. March 18, 1926. Fixed-abutment type; packing drums and vanes. - The internal contour of the working chamber of a rotary engine or pump of the type having a sliding vane contacting at both ends with the periphery of the chamber is obtained by means of a liner b which is formed with three circular arcs of which one k is coaxial with but of radius less than that of the cylindrical casing a, and the other two m, n are of a radius equal to the arithmetic means of the radii of the coaxial surfaces. Packing grooves d<1> are formed on the vane and similar grooves may be provided between the drum c and the small radius arc k of the liner b.
Patent GB-503709-A (GB)
Title: Improvements in and relating to the construction of cycle stands for the display of cycles
IPC: B62H3/00
Filed: 1938-06-07
Abstract: 503,709. Cycle stands. KETTLE, H. E. ' June 7, 1938, No. 16819. [Class. 136 (i)] A stand for the display of cycles and their accessories comprises two telescopic upright tubes c, f mounted on four feet a and adjustable for height by means of a contractible clamp d fitted with a bolt and wing-nut e, a crossbar g being welded to the upper tube f and provided with rubber-covered hooks. h for suspending a cycle and with brackets o or clips for the display of lamps or other accessories the uprights and feet being also provided with brackets or clips p, q for the display of accessories.
Patent GB-950629-A (GB)
Title: Microwave jet propulsion engines
IPC: F02K7/08
Filed: 1960-05-12
Abstract: 950,629. Waveguide dissipative terminations. RAYTHEON CO. May 12, 1960 [May 12, 1959], No. 16832/60. Heading H1W. [Also in Divisions F1 and H5] The working fluid for a jet propulsion engine is heated by means for converting incident microwave energy into heat. The waveguide 10 comprises a hollow member 12, Fig. 1, has a screen 14 at one end through which a gaseous medium passes to a heater formed by a stack of electrically conductive plates. Microwave energy passes through a branch 16 through a microwave window 17 on to the plates 18. A screen, similar to screen 14, is placed at the outlet end of the waveguide. The assembly 18 consists of several horizontal plates 20 supported by vertical plates 22 to form a number of narrow passages. The plates 22 are preferably made of a metal of high specific resistance or of a suitable ceramic-metal mixture or may be given a coating of an anechoic material of high specific resistance. The heater may be formed of a number of nested cylindrical or other shaped metallic members to provide a number of narrow or thin passages. The heating surfaces may comprise the inner surfaces of the waveguide only.
Patent GB-162302-A (GB)
Title: Improvements in and relating to directors for guns and like apparatus
IPC: F41G3/14
Filed: 1917-11-15
Abstract: 162,302. Evershed & Vignoles, Ltd., and Needham, J. C. Nov. 15, 1917. Sights and methods of sighting. - Relates to apparatus for controlling from a distance the direction of an object such as a gun, and consists in means for determining the correction tor parallax between the object and the control post such that, when adjusted for the distance from the object to the control post and for the range of the target, the apparatus gives, for any bearing of target, the necessary correction. In the form shown in Fig. 3, the apparatus comprises two members a, e both mounted to rotate on a fixed vertical pivot a<2>, and a member d<2> mounted to rotate on a pivot which may be displaced relatively to the pivot a<2> by rotating by hand a member f, turning on a fixed pin, and acting on a rod f<3> connected to the pivot mounting of the member d<2> through pin and cam-slot gear f<2>. The member a, which is rotated by the observing device of the control apparatus, carries a member b which may be rotated by hand so that the slot c therein assumes any desired inclination to the line common to the centres of the elements; the member e carries a fixed radial slot e<1>; and the member d<2> carries a pin d engaging both the slots c and e<1>. The angular displacement between the members a and e, as read off between the pointers a<3> and a<4> on a scale of bearings, will consequently vary as they rotate, being a maximum when the pin d is in the line of common centres. If the member b is turned so that the inclination of the slot c is proportional to the distance between the control and the controlled stations, and the member f is adjusted so that the displacement of the pivot of the member d<2> is proportional to the range from the control station to the target (scales being provided on the instrument for these settings), then the law of variation of the angular displacement between the members a and e as they rotate is approximately the same as that for the variation of the parallax correction with bearing, and the pointers a<3>, a<4> will indicate respectively the bearing of the observing device and the appropriate bearing of the controlled device corrected for parallax. The apparatus may be designed so that the range setting is made on the member b, and the setting for the distance between the two stations on the member f. The pin d may be replaced, as shown in Fig. 5, by an adjustable wedge; g<2> or equivalent device working between stops g<1>, h<1>, which replace the slots c, e<1> on the members a, e. The apparatus may, with the necessary changes, be employed at the controlled station.