baber/WOPTO huggingface dataset:
Patent GB-301862-A (GB)
Title: Improvement in valve for rock drills
IPC: B25D9/16
Filed: 1928-10-15
Abstract: 301,862. Ingersoll-Rand Co., (Assignees of Smith, W. A.). Dec. 7, 1927, [Convention date]. Percussive drills.-The cylinder A is provided with back and front heads B, C, and a piston-controlled main exhaust D. A fluted extension H on the piston E passes through a bush F and engages a fluted bushing in a chuck L carrying the tool. A rear, rotation ring P has teeth Q which engage the rifle-bar pawls R. A water tube extends through the drill and engages a plug X in a cap b secured to the drill cover B which carries the supply valve. A thin, annular plate distributing valve j, centrally bored for the passage of the rifle bar T, is housed in a chamber p in a block q closing the cylinder end. The valve overlaps the seats. A cover block r is arranged behind the block q. The blocks q, r' have ported annular projections providing seats for the valve, which projections are encircled by annular supply chambers w, x. Alternate supply passages y, z connect these chambers with the inlet. In the position shown, fluid passes from the reservoir h through passages z and ports 2 in the valve seats to the rear end of the cylinder. When the exhaust port D is opened, the fall of pressure on one side of the valve and the compression and pressure fluid on the other side effects its reversal.
Patent GB-1046632-A (GB)
Title: Improvements relating to inflatable shelters
Inventor: LOBELLE MARCEL JULES ODILON
IPC: E04H15/20
Filed: 1963-07-26
Abstract: 1,046,632. Pneumatic tents. M. L. AVIATION CO. Ltd. Oct. 23, 1964 [July 26, 1963], No. 29770/63. Heading E1A. An inflatable building for use as a hospital, hangar, workshop or store consists of an arched central section having two spaced walls 1, 10 and a number of inter-connecting members 15, and, a pair of domed single-walled end sections 26, 27 connected thereto, each wall of each section including two spaced skins joined by closely arranged tensile threads. The sections are inter-connected by zip fasteners protected by cover strips 31 and are provided with windows 35, doors 32 and partitions 36, as desired. Each section is made up of a number of flat elements which are inflated from a ring main 41 connected to a compressor 40 having a pressure-sensitive control switch therefor. The outer wall is anchored by a ballast bay 20, guy ropes 21, pickets 22 and horizontal ropes 23.
Patent GB-609221-A (GB)
Title: An improved method of finishing or resetting the cutting edges of twist drills or the like and an angle measuring device for use in such a method
IPC: B23Q17/09
Filed: 1946-11-08
Abstract: 609,221. Grinding twist drills. READING, H. C. Nov. 8, 1946, No. 29817/45. [Class 60] [Also in Group XX] A method of finishing or re-setting the cutting edges of a twist drill or the like consists in measuring the angle each cutting edge makes with the longitudinal central axis of the drill, grinding said edges so that both said angles are equal to a pre-selected angle, and then measuring, in an axial direction, the distances between the meeting point of the cutting edges and points on the cutting edges at equal radial distances from said axis and grinding the appropriate edge so as to equalise said axial distances. On the upper face of a yoke piece 13 formed between two bosses 11 on a base 10 are two parallel drill-locating channels - 19, 20 the channel 19 having one wall 44 inclined at a comparatively small angle to the vertical and the other face 45 at right-angles thereto. Mounted on pivot bearings 29, opposite the end of the channel 19 is a pivotal abutment 30 having a flat face 41 adapted to engage one or other of the conical faces at the end of the twist drill. The abutment 30 actuates a micrometer clock 35 through the medium of a lever arm 38 having a projection 40 engaging a head 37, of a plunger 36 of the micrometer clock. In use the clock dial is set to zero for a test-piece, the drill is then placed in the channel 19 and twisted about its longitudinal axis until the cutting edge lies substantially in the plane of the face 41, the reading noted and the reading for the other cutting edge noted, the drill can then be correctly re-ground. To determine whether one end face is in advance of the other, the channel 20 is utilised. An abutment 32, pivoted at the end of the end of channel 20 and linked to the micrometer clock 35 has, Fig. 6, a part 54 of its upright face inclined to the axis of rotation 53 of the abutment. A similarly inclined fixed abutment face 50 is arranged at the opposite side of the axis 53, Fig. 3. The two walls of the channel 20 are in this case at equal angles to the intersecting vertical plane. In use the drill is pushed along until one cutting edge engages the fixed face 50, the other cutting edge engaging the pivotal face 53. The drill is rotated on its axis and the maximum reading of the micrometer clock is noted which reading should be the same as that when the cutting edges engage respectively the other faces. In a modification, Figs. 9, 10 (not shown), the fixed abutment is vertical and the pivotal abutment 32 has no inclined face.
Patent GB-766008-A (GB)
Title: Improved method of, and apparatus for, controlling the flow of highly viscous or thixotropic liquids
Inventor: MACKENZIE GEORGE
IPC: F16K31/05
Filed: 1953-10-28
Abstract: 766,008. Regulating volume of How of fluids; valves. NORTH THAMES GAS BOARD. Oct. 28, 1954 [Oct. 28, 1953), No. 29850/53. Class 135. A method of and an apparatus for controlling the flow of a highly viscous or thixotropic liquid in which the liquid passes through an aperture of controllable size between a rotatable valve plug and its seat, the plug being given a continual, reciprocal, angular movement as the liquid passes through the aperture. The liquid passes from an inlet 2 to an outlet 3 via a conical seat 6 having a needle valve 9 which can make a line closure with the seat and which is given a continuous rotary reciprocating motion through the screw 13 and disc 12 which is oscillated by a link 16 connected eccentrically to a disc 17 continuously rotated through the gearing 22, 21 and electric motor 20.
Patent GB-1085227-A (GB)
Title: Improvements in or relating to gas turbine engines
Inventor: BROWN DAVID MORRIS
IPC: F04D27/02
Filed: 1963-07-26
Abstract: 1,085,227. Axial flow compressors; gas turbine engines. ROLLS-ROYCE Ltd. July 20, 1964 [July 26, 1963], No. 29856/63. Headings F1C, F1G and F1T. [Also in Division F2] To reduce noise in a gas turbine engine each compressor or turbine rotor blade (preferably of the inlet stages of the compressor or the outlet stages of the turbine) comprises a solid upstream part and a hollow downstream part, said hollow part having a porous or foraminous surface which is exposed to gaseous flow, and suction means connected to the hollow parts of the blades whereby boundary layer gases from the gaseous flow are drawn through the surface to inhibit turbulence in the boundary layer gases. A blade having a solid leading edge 32 is formed with perforations that communicate with a cavity 34 through which boundary layer gas is withdrawn by a suction pump 39. Other embodiments are described embodying single or multiple suction slots or areas of porous material. Similar construction may be used for stator blades. The casing or inner wall of the machine may be perforated. Also, as at 25, and formed with an annular duct 26 through which turbulent boundary layer gas 28 is extracted by a suction device or conduit 27.
Patent GB-1401441-A (GB)
Title: Connectors
IPC: H01R12/50
Filed: 1971-06-25
Abstract: 1401441 Edge connectors PLESSEY CO Ltd 22 Sept 1972 [25 June 1971] 29860/71 Heading H2E An adaptor for allowing an edge-connector to mate with a circuit-board-receiving socket comprises an additional body consisting of similar half shells which when clamped together form at one end a recess to contain the edgeconnector and at the other end means to clamp the cable connected to the edge-connector. Edge connector 1 having contacts 6 connected to the wires 7 of a cable is enclosed by similar half shells 2, 3 held together by screws. The half shells 2, 3 clamp the cable 8. Each half shell carries a lug such as 9 with a captive screw 11 to secure the adaptor to a counterpart. Correct coupling may be ensured by colour coding the half shells and by removing selected ones of a plurality of pins 12.
Patent GB-1312807-A (GB)
Title: Material tester
IPC: G01N29/24
Filed: 1970-06-19
Abstract: 1312807 Ultrasonic probes; ultrasonic inspection AUTOMATION INDUSTRIES Inc 19 June 1970 [25 June 1969] 29890/70 Headings H4D and H4J A search unit (Fig. 2) includes a transducer element 49 (preferably piezoelectric), located between a reflective surface 80 (Fig. 7) having an elevated portion 44 and a reflector 62. The surface 80 is a surface of an electrically and acoustically non-conductive block 42 in a cylindrical housing 40. The transducer element 49 is preferably square and the surface 80 and reflector 62 are spaced apart by half the length of a side of the element 49. When the element 49 is energized at its resonant frequency nodal lines 76, 78 &c. occur within the confines of elevated portion 44. The element 49 is resiliently held by two rubber bands 56 (see Figs. 4, 6, not shown) at right-angles. One rubber band is attached between two pins 46, 48 forming the ends of a U-shaped member embedded in the block 42 and the reflector 62 is also attached to these pins 46, 48. The other rubber band is attached between two pins (50, 52), Figs. 3, 5 (not shown), which are electrically connected to electrodes of the transducer element 49 and to input/output wires. In apparatus for testing for flaws or for measuring the thickness of a workpiece 17 (Fig. 1), two such search units are used, namely a transmit search unit 15 and a receive search unit 16. The search units 15, 16 are in air. The transmit search unit 15 is fed from a 25 kHz pulse generator 24. Ultrasonic pulses passed through the workpiece 17 are received by receive search unit 16 and corresponding spikes appear on an oscilloscope 22 together with a reference spike. Ultrasonic energy transmitted to the receive search unit 16 which does not impinge on the element 49 but is reflected from the surface 80 enters the area 82 thereby reinforcing the ultrasonic pressure received by the element 49. Standing waves between the element 49 and workpiece 17 are cancelled by virtue of the surface 80 and reflector 62 being spaced by a distance #/4 at the operating frequency, giving a round trip distance of #/2.
Patent GB-655784-A (GB)
Title: Means for anti-icing of compressors
IPC: F02C7/047
Filed: 1948-11-18
Abstract: 655,784. Gas turbine plant; compressors. LUTTMAN, H. C., and ROE CANADA Ltd., A. V. Nov. 18, 1948, No. 29948. [Classes 110(i) and 110(iii)] The whole or part of the surfaces of a gas turbine plant air compressor which are exposed to the air stream and are susceptible to the formation of ice thereon have a dark coloured finish applied to them and heat producing means are provided to project radiant heat on to these surfaces. The outer peripheral wall 10, the supporting struts 8 of the front compressor bearing housing 7, the inlet guide vanes 9 .and the first two or three rows of stator blades 5 are heated by conduction from a heating medium, such as tetracresyl silicate or oil circulated through conduits 14, 15 and jacket 13. The heating medium is heated in a heat exchanger located in the turbine exhaust gas stream. If desired, the parts referred to may be heated by means of electrical resistance elements embedded in them. The rotor blades 5 and the nose bullet 11 are heated by radiation from the above mentioned parts, and to facilitate this, the stator blades 5, the inlet guide vanes 9, the inner surfaces of the stator .casing 2, the surfaces of the rotor blades 6 and bullet 11 are finished in a matt black by any suitable chemical or dyeing process. The extreme forward portion B<SP>11</SP> of the bullet and leading edges B of the struts 8, which can be viewed perpendicularly through the compressor air intake entry, are left brightly polished to reduce to a minimum the radiation into the atmosphere. The demarcation lines D and D" are so located' that the normals to the surfaces of the bullet and struts through these lines are tangential to the curved surface at the leading edge of the intake fairing 10. The demarcation line D<SP>1</SP> is so drawn that normals to the surface of the fairing on this line will pass through the line D<SP>11</SP>.
Patent GB-994290-A (GB)
Title: Slip cases
Inventor: LAWSON JEREMY THOMAS
IPC: B65D5/18
Filed: 1963-07-30
Abstract: 994,290. Cases. LONDON FANCY BOX CO. Ltd. Dec. 23, 1963 [July 30, 1963], No. 30160/63. Heading B8P. A slip case in which overlapping wings 26, 28 and 27<SP>1</SP>, 29<SP>1</SP> are secured together, has tabs 30<SP>1</SP>,31<SP>1</SP> attached either to the minor sides 34, 36 of the back wall 25 (Fig. 2) or to the wings 28, 29 (Fig. 1, not shown) in order to provide a fold line at each corner edge of the case. The overlapping wings are spaced further apart than those which are folded within the case in order to accommodate the thickness of the blank. The wings 28<SP>1</SP>, 291 and tabs 30<SP>1</SP>, 31<SP>1</SP> may be cut away at 38, 39 and 35, 37 respectively so that they do not overlap when folded against wings 26, 27. The tabs 301, 311 may be triangular.
Patent GB-1489866-A (GB)
Title: Polymerisation process
IPC: C08F114/06
Filed: 1973-12-26
Abstract: 1489866 Polyvinyl halides BP CHEMICALS INTERNATIONAL Ltd 11 Dec 1974 [26 Dec 1973] 30183/73 Heading C3P Polyvinyl halides are formed by homopolymerization in a batch process in aqueous suspension in which polymerization is effected until the start of the pressure drop then further monomer is added over not more than 15 minutes during a period in which the conversion of the original feed is in the range 70-80%, the amount being up to 50% of the original feed, then polymerization is completed. Preferably 2-30% of further monomer is added.
Patent GB-705448-A (GB)
Title: Improvements in end roll adjustment for metal rolling mills
IPC: B21B31/18
Filed: 1951-12-27
Abstract: 705,448. Rowing. BIRDSBORO STEEL FOUNDRY & MACHINE CO. Dec. 27, 1951 [July 18, 1951], No. 30225/51. Class 83 (4) In a means of endwise adjustment of rolls 24, Fig. 2, of a rolling mill the thrust bearing assemblies 55 on the ends of the rolls have outwardly extending projections 76 which are clamped by universally jointed anvils 85, 87, carried by a joke 77 which is axially adjustable relative to the uprights 21 of the machine frame.  The anvils 85 are mounted by ball and socket joints on hooked ends 81 of the yoke 77 disposed on each side of the bearing assemblies 55 and engage the inner faces of the projections 76. The anvils 87 are mounted by ball and socket joints on the ends of screws 86 which are adjustable endwise in the yoke 77 to grip the projections 76 on the outer faces, locking nuts 91 being provided. The yoke 77 is adjustable axially of the rolls in slots 48, Fig. 1, extending between spaced U-shaped arms 47 on brackets 44 bolted to the machine uprights 21. The arms 47 are cross connected by bridges 50 and an adjustment stud 92 extending from the yoke 77 extends through the bridge '50 and is adjusted axially by nuts 96, 97. Capstan bar holes in the nuts 96, 97 facilitate adjustment and graduations 100 on the nut 97' indicate the degree of adjustment. Journal portions 53 of the rolls are vertically supported in the conventional manner between upper and lower chocks 23, 25 which are vertically slidable between guide walls 22 of the uprights 21, and permit axial movement of the rolls. The projections 76 are integral with a casing 70 located on thrust bearings 60, 63 between an integral flange 71 and an annular ring 73 fastened to the casing 70. The bearings 60, 63 are located axially on a reduced end 54 of the roll between a shoulder 61 on a sleeve 56 and a cap 65 held by bolts 66 on the end of the roll and engaging the end of the sleeve 56 and the end of the inner race 62. A dust cover 75 attached to the end of the casing 70 is removable to allow access for checking the tightness of the bolts 66 without exposing the thrust bearings. The intermediate chocks 27, 31, Fig. 3, between the rolls 24, 26, carry bearing bronze members 28, 32 located in position by lugs 30, 33. The chocks 27, 31 are held apart by adjustable spring loaded wedges 35 containing springs 38 engaged by square section nuts 40 adjustable on spindles 41 rotatable by wrench holds 43 and rotatably mounted on uprights 21. Specification 659,126 is referred to.
Patent GB-913839-A (GB)
Title: On-off control means for water flow through a heating plant
Inventor: ENERUS BROR RUDOLF
IPC: F24D19/10
Filed: 1960-09-01
Abstract: 913,839. Heating systems for buildings. VARMEKRAFT A.B. Sept. 1, 1960, No. 30230/60. Classes 64 (1) and 64 (2). In a means for controlling the water flow through a heating boiler 1 so that idling losses therein are reduced whilst water is prevented from flowing out of the boiler before the temperature of the water therein is somewhat higher than that of the entering water, a temperature scanner 5 is located in the return pipe 2 and a scanner 4 is located in the boiler water space adjacent the flow pipe 3. The scanners are connected to a differential thermostat 8 which controls a motor 10 connected to a valve 11 in the return pipe. When the temperature of the water at 4 is a predetermined amount higher than that at 5 the valve 11 is opened so that water flows into the heating system. When the temperature of the water at 4 falls below the temperature at 5 plus the predetermined difference the valve 11 is closed, the heat stored in the boiler having been transferred to the heating system.
Patent GB-235092-A (GB)
Title: Improvements in handle socket members for carpet sweepers
IPC: A47L11/40
Filed: 1924-12-16
Abstract: 235,092. Owen, I. J., and Bouwmeester, B. J. Dec. 16, 1924. Fixing by welded and screwed T-sockets.-A handle socket for carpet sweepers comprises a shell 1 made up of two sections 5 with extensions 6 for welding to the bail 1 of the carpet sweeper, and includes a flanged ring 11 for keeping the sections together and for clamping a screwthreaded lining 10 inside the socket. The bail is flattened at the centre 8 and roughened at the sides 7 to facilitate spot-welding of the extensions 6 thereon. All parts may be made of stampings and assembled by die press methods and spot-welding.
Patent GB-1157813-A (GB)
Title: Inverters
IPC: H02M7/515
Filed: 1966-07-06
Abstract: 1,157,813. Inverting. LICENTIA PATENTVERWALTUNGS-G.m.b.H. 6 July, 1966 [7 July, 1965], No. 30336/66. Heading H2F. An inverter (e.g. for induction heating) comprises at least three capacitors 21 . . . 23 sequentially charged to opposite polarity from a centre-tapped D.C. supply 71, 72 via inductors 31 . . . 33 and thyristors 11 . . . 16 and discharged into an inductive load 40 via thyristors 1 . . . 6. The thyristors are triggered sequentially so that the output frequency (e.g. 20 kHz) is higher than that obtainable from a single pair of thyristors having the same turn-on time. Alternatively, five capacitors 21 . . . 23 could respectively be charged by ten charging and ten discharging thyristors giving a frequency of 55 kHz. Inductors 31 . . . 33 may be replaced by a single inductor connected between the upper sides of capacitors 21 . . . 23 and the centre-tap of the D.C. supply 71, 72. A single D.C. supply may be used, centre-tapped by a pair of capacitors. Fig. 1 (not shown) relates to a known circuit using a single capacitor charged via one thyristor and an inductor, then discharged via a further thyristor into an inductive load; the discharge thyristor being shunted by a reverse diode so as to achieve full resonant charge and discharge.
Patent GB-832914-A (GB)
Title: Improvements in and relating to oil burners
Inventor: CONSIDINE ST JOHN POWER
IPC: F23D3/00
Filed: 1955-10-25
Abstract: 832,914. Liquid fuel burners. DON OIL BURNERS Ltd. Oct. 15, 1956 [Oct. 25, 1955], No. 30472/55. Class 75(1) A liquid fuel burner comprising a plurality of annular shaped combustion chambers arranged one within the other and in heat conducting association has separate oil feed devices to different chambers or groups of chambers which may be selectively brought into use independently by the operation of the related oil feed device. The main burner comprises a vaporizing chamber 8 which is fed by a main pipe 2 and supplies fuel through radial ducts 9 to combustion chambers 3 formed between concentric perforated cylinders 12. The additional combustion chamber or chambers 4 is formed between concentric perforated cylinders 16 and is fed with fuel through a feed pipe 5 provided with a suitable control cock. The pipe 5 may be connected to the reservoir supplying the vaporizing chamber 8. There is no oil communication in the channels 10 of the main burner and the channel or channels 14 of the additional combustion chamber or chambers. The channel or channels 14 may be cast in one piece with the base containing the channels 10 or may be formed separately and secured to the main channels 10. Specification 519,191 is referred to.
Patent GB-921722-A (GB)
Title: A device for preventing an object from moving in one direction when such object is in at least one predetermined position
IPC: E06B9/90
Filed: 1960-09-05
Abstract: 921,722. Pawl and rack fastenings. HUNTER DOUGLAS INTERNATIONAL CORPORATION. Sept. 5, 1960 [Sept. 4, 1959], No. 30597/60. Class 44. A device for preventing an object from moving in one direction comprises a spring-biased pawl co-operating with a stop member provided with a setting surface for setting the spring in one of two directions to bring the pawl into an operative or an inoperative position. As shown a combined guide and stop member 1 comprises a channel of U-section having in one flange 3 a longitudinal slot 5 in which slides the pin 6 of a pawl 2, the nose 20 of which co-operates with a rack formed by slots 12 in the bottom web 4 of the member 1. A spring 7 has two legs 8, 9 which are at right angles to each other when unloaded. The slot 5 has at top and bottom curved slots 11 which receive the tail 13 of the pawl spring leg 9. As the pawl passes down the slot 5 from the top position shown in Fig. 1a the spring is brought to the loaded position shown in Fig. 1b so that the pawl engages with the rack, preventing the pawl from being moved upward. On reaching the bottom of the slot 5, the tail 13 of the spring leg 9 enters the lower curved slot 11, whereupon the spring is unstressed and the pawl can be moved upward in the inoperative position shown in Fig. 2. As applied to a sun-blind 16, Fig. 4, the guide 1 is attached to the face of a building and a strut 18 is hinged to the pawl pin 6, the pawl being urged upward by a spring 19 which tends to roll up the blind. In a modification (Figs. 3a, 3b, 3c, not shown) the slots 11 are replaced by semi-circular recesses and the rack slot 12 by projecting teeth. In another embodiment (Figs. 6 to 8, not shown) the guide and stop member 1 is formed as a hollow box-shaped member having a longitudinal slot 23 (corresponding to the slot 5) in its outer face, the pawl pin 6 being guided within it on rollers and the slots 11 being replaced by recesses at the sides of the longitudinal slot. In a further embodiment, Fig. 10, the pawl is formed as a hook 28 and its pin 27 is fixed; it co-operates with a stop member 31 forming an extension of a vertically sliding guide member 34 to which is hinged at 37 an arm 38 carrying a sun blind (see Fig. 9, not shown). As shown in Fig. 10, the guide and stop member 31, 34 is prevented from moving downwards but can be moved upwards; if this is done and the member then moved down again, the projection 30 strikes the spring leg 9 and moves the pawl hook 28 clear of the stop member 31 so that the member 31, 34 can continue to move downward (see Figs. 11 to 14, not shown).