baber/WOPTO huggingface dataset:
Patent GB-546933-A (GB)
Title: Improvements in or relating to cement
IPC: C04B7/00
Filed: 1940-10-15
Abstract: 546,933. Cements. KERR DENTAL MANUFACTURING CO. Oct. 15, 1940, No. 15294. Convention date, Oct. 23, 1939. [Classes 22 and 70] A hydraulic cement is made by mixing beryllium oxide with calcium or strontium oxide or oxide-forming salts thereof, sintering or fusing the mixture and grinding to a fine powder, capable when mixed with water of setting to a hard mass. Aluminium, silicon, cerium, thorium or iron oxides may also be present, or the beryllium oxide may wholly or in part replace the iron or aluminium oxide in Portland cement. The Specification as open to inspection under Sect. 91 describes the use of beryllium oxide with one or more other metal oxides such as barium or magnesium oxide. This subjectmatter does not appear in the Specification as accepted.
Patent GB-855347-A (GB)
Title: Improvements in or relating to inductive calling systems
Inventor: SNEATH OSWALD BARBER
IPC: H04Q1/44
Filed: 1956-05-16
Abstract: 855,347. Inductive signalling. MULTITONE ELECTRIC CO. Ltd. May 15, 1957 [May 11, 1956], No. 15304/56. Class 40(5). In an inductive selective calling system a receiver comprises a magnetic pick-up coil, an amplifier, a limiter and a frequency selective filter whose output renders a normally quiescent oscillator active. In the embodiment described a pick up coil L 1  Fig. 1 is connected to the base electrode of a grounded emitter transistor T 1  which feeds a further amplifier stage T 2  which is coupled through a step-down transformer L 2  to the base of transistor T 3 ; the base being biased by a potential divider R 5 , R 6 , so that half the supply voltage is dropped across R 7 , thereby minimizing second harmonic generation in the collector circuit of T 3  on receipt of strong signals. Transistor T 3  together with resistance R 7  forms a limiter circuit, transformer L 3  and condenser C 3  constituting the frequency selective filter. Operation of switch S in the base circuit of oscillatory transistor T 4  reduces the effect of the selective filter enabling the receiver to respond to all frequencies. Transistor T 4  oscillates when there is suitable negative bias on the base, the oscillation ceasing in the absence of such bias. A modified pick up circuit employs two inductors L 1 , L 5  Fig. 2 whose magnetic axes differ, a condenser C 4  in series with L 5  and having the same reactance at resonance, the signals from L 1  and L 5  being hence out of phase at the base electrode of T 1 . In a further embodiment, Figs. 3 and 4 (not shown) the emitter of transistor T 4  is maintained negative with respect to the base in the absence of a signal, so that a trigger signal is needed to initiate oscillation. This renders the receiver less susceptible to changes in temperature or to replacements of T 4 . In an embodiment, Fig. 6 (not shown), to provide calling on two channels two frequency selective circuits are employed.
Patent GB-1213322-A (GB)
Title: Apparatus for the manufacture of long-pile rugs by knotting pile tufts in a fabric
Inventor: JEANDUPEUX-PELLATON MADELEINE
IPC: D04G3/00
Filed: 1968-03-29
Abstract: 1,213,322. Hand tufting appliances. M. JEANDUPEUX-PELLATON and P. BOEHLER. 29 March, 1968 [31 March, 1967], No. 15310/68. Heading D1G. Apparatus for securing a length of tuft yam to a base fabric comprises a first unit having yarn pulling means movable through the fabric, a second unit movable relative to the first unit, latch means normally preventing relative movement between the first and second units, and means, actuated by engagement of the fabric by a member when the pulling means has passed through the fabric, for releasing the latch means to permit said relative movement, whereby ends of said yarn length carried by the first unit are pushed by members of the second unit through the fabric and into engagement with the pulling means, for withdrawal through the fabric by the latter. A head 1 is rigid with an apertured blade 3 and with a rod 2 passing through a sleeve 17 rigid with a finger 19 slidable in head 1. Resilient wire latch members 15 comprises straight portions 15a disposed in opposed grooves 16 formed in rod 2, inturned lower ends 15b disposed in a diametrical bore formed in rod 2, outwardly-inclined portions 15c passing through opposed slots 18 formed in sleeve 17, and inturned upper ends 15d disposed in a diametrical bore formed in rod 2. A head 4, rigid with a hollow handle 5 slidable on sleeve 17, is normally biased against ends 15d by a spring 20 contained in handle 20 to prevent sliding movement of the latter. Arms 6, 6a are pivoted at their upper ends to head 4, and have hooked lower ends limited in outward movement by pins 8 on head 1 and adapted to cooperate with cam surfaces 7 on head 1 during sliding movement of handle 5. In operation, a length of tuft yam 14 is inserted in a recess 13 in head 1, blade 3 is inserted between adjacent strands 9, 10 of a base fabric, and downward pressure is applied to handle 5, When finger 9 engages the fabric, sleeve 17 slides upwardly to co-operate with the portions 15c for moving the ends 15d inwardly to disengage from head 4. Further pressure on handle 5 thereby causes the latter to slide on sleeve 17, when the hooked ends of arms 6, 6a push the ends of yarn 14 in opposite directions through the aperture in blade 3. On release of pressure on handle 5, the latter is moved upwardly by spring 20 into latched position, and withdrawal of blade 3 from the fabric draws the yarn ends through the yam loop laid over the strands 9, 10.
Patent GB-945561-A (GB)
Title: Improvements in or relating to axial flow compressors
Inventor: MORLEY FREDERICK WILLIAM WALTO
IPC: F01D5/30
Filed: 1961-04-27
Abstract: 945,561. Compressor blades. ROLLSROYCE Ltd. April 24, 1962 [April 27, 1961], No. 15314/61. Heading FIT. An axial flow compressor rotor or stator blade formed of a thermosetting resinous material reinforced with fibres which extend spanwise for the full length of the blade, comprises an aerofoil portion and a root portion having a strengthening insert lying in a chordwise sence and being curved so that it lies substantially parallel to the mean profile camber line of the aerofoil portion along its whole length. Each blade 17 is formed from material such as glass or asbestos fibres impregnated with a phenolic or an epoxy resin. The root 17b is of dovetail shape retained axially on the rotor disc 16 by a resin lug 20 and a metal tab 21 having flanges 21a, 21b. A curved insert 22 of resinous material or metal having a triangular cross-section strengthens the root 17b. The fibres 24 of the blade material extend the full length of the blade 17 and enclose the insert 22. The root 17b is built up with pads 25 of resin material.
Patent GB-161990-A (GB)
Title: Improvements in track contact stud boxes for electric railways
IPC: B60M1/08
Filed: 1916-10-27
Abstract: 161,990. Lambert, H. L. Oct. 27, 1916. Stud-contact conductors.-A track contact box for electric railways comprises a cap 2 of non- magnetic material, a non-magnetic contact plate 4 insulated from the cap 2 and bolts 5 of a material that can be rendered magnetic. The bolts hold the contact plate in position and, upon the passage of a vehicle, attract the armature 7 carried on a flexible conductor 9 and connected thereby to the main feeder 10. The inside of the contact box is lined with insulating-material 12, preferably horn fibre.
Patent GB-612361-A (GB)
Title: Improvements in or relating to tapping machines
IPC: B23G1/16
Filed: 1946-05-21
Abstract: 612,361. Tapping. CLARKE, H. L., and CLARKE, A. W. May 21, 1946, No. 15344. [Class 83 (iii)] [Also in Group XXIV] In a tapping-machine comprising a tapcarrying main shaft, an intermediate shaft carrying oppositely driven friction clutch elements, and manual control means for selectively engaging the drive, the clutch driving elements are rotated by an endless belt passing round a driving motor pulley at one side and an adjustable jockey pulley at the other. The belt 17 drives two pulleys, freely mounted on the intermediate shaft 15, which are provided with friction surfaces. Each of these may be moved by a handle 34 to engage fixed clutch plates on the shaft to transmit forward or reverse drive to the tap through wormgear 13 and 14. In a modification, changefeed gearing is provided and the tap-spindle may be fed axially. The belt-tension is adjusted by moving the jockey-pulley 24 (see Group XXIV).
Patent GB-426378-A (GB)
Title: Method of and apparatus for detecting sulphuretted hydrogen and the like in gases
IPC: G01N21/86
Filed: 1934-05-23
Abstract: A device for indicating the presence of constituents in a gas mixture, particularly hydrogen sulphide in coal gas, comprises a gas tight chamber 10 having transparent sides and containing a piece of test paper or like absorbent material, and means for passing a ray of light of variable intensity through the chamber to a photo-electric cell 11 which operates an indicating device. The chamber 10 is preferably a cylinder of which one face 33 can be unscrewed to renew the test paper, which may be mounted on small prongs 36, 37.  The <PICT:0426378/III/1> <PICT:0426378/III/2> adjustment of the source of light is preferably effected by sliding it along a bar 30.  The gas under test may be burned to supply the light.
Patent GB-153521-A (GB)
Abstract: 153,521. Wade, H., (Hansen, C. 0.). March 11, 1920 Clutches, friction.-Friction clutches of the expanding band type having expansion rings on their inner surfaces, which are pressed outwardly into engagement with the cylinders by conical members engaging the inner bevelled surfaces of the rings, are provided with a. series of wedges,. movable in slots in an abutment, and controlled by a sleeve, and which cause the conical members to converge or diverge, thus putting the clutch into or out of action. A cylinder 7 contains a splitring 9 in contact with slidable members 12, 15, which are prevented from rotating by the key 21. Wedges 24 having toes 24<a>, which engage in a groove in the member 15 are forced inwards from the position shown by the forward movement of the sleeve, 20. An extension 20<a> of the sleeve 20 forms a dust-shield to the clutch.
Patent GB-1530428-A (GB)
Title: Klebsiella pneumoniae and enterobacter broth
IPC: C12N1/20
Filed: 1977-04-13
Abstract: 1530428 Microbiological testing MCDONNELL DOUGLAS CORP 13 April 1977 [3 May 1976] 15374/77 Heading C6F A broth medium for the detection of Klebsiella such as Klebsiella pneumoniae or Enterobacter in urine samples using automated optical detection apparatus, consists essentially of carbon, nitrogen and vitamin source materials, a mixture of chemical inhibitors which will inhibit the growth of Escherichia coli while simultaneously promoting the growth of Klebsiella or Enterobacter, and an  indicator to indicate the presence of Klebsiella or Enterobacter, at a pH of about 8À0. The medium is exemplified by the following constituents: cellobiose, inositol, gelatin hydrolysate, yeast extract and D-biotin, 3-(α-acetonylbenzyl)-4- hydroxycoumarin and 2,4-dinitrophenyl hydrazone of α-ketoglutaric acid (E. coli inhibitors), a mixture of sodium desoxycholate and the sodium salt of ricinoleic acid (indicator of Klebsiella and Enterobacter), and Brilliant Green.
Patent GB-593644-A (GB)
Title: Cycle hub gear
IPC: B62M25/00
Filed: 1945-06-18
Abstract: 593,644. Variable-speed gearing. DINAN, E. June 18, 1945, No. 15403. [Class 80(ii)] In a variable-speed hub gear of a pedaloperated cycle, the speed is changed by axially moving a torque carrying element 28. The driving member 15 has axially extended fingers 26 driving dogs 27 on an axially slidable spider 28, which in turn drives internal dogs 29 on the shell 22 of the annulus 21 of an epicyclic gear train, the drive then passing to the planet carrier (not shown) which has a free-wheel connection with the hub. The shell 22 of the annulus carries a pair of diametrically-opposite pawls 24 in a peripheral groove 23, and in bottom gear the extremities of dogs 27 engage the tails 31 of the pawls, holding them from cooperation with ratchet teeth on the interior of the hub. On back pedalling, the spider 28 is moved axially by cam means 37-45. disengaging the dogs 27 from the pawls, which then engage the ratchet teeth on the interior of the hub. The drive is then directly to the hub, the planet carrier being over-run by the hub.
Patent GB-1040241-A (GB)
Title: Improvements relating to parallel digital adders
Inventor: BROWN NORMAN
IPC: G06F7/50
Filed: 1962-04-24
Abstract: 1,040,241. Parallel binary adders. ELECTRIC & MUSICAL INDUSTRIES Ltd. April 24, 1963 [April 26, 1962], No. 15427/62. Heading G4A. A parallel binary adder using carry propagation is built up from adder units, each containing a pulse regenerator for a carry signal generated in or propagated by the unit, and the units are divided into a number of groups with separate paths for transmission of carry signals through the group as a whole, and through the individual units of a group, the choice of a regenerated or an unregenerated carry signal for the inputs to a group being made on the basis of the number of units through which an unregenerated carry signal can pass without excessive deterioration. Fig. 2 shows a full adder " building block" having addend and augend inputs H, J, two carry inputs A, B, a " conditional carry " output E, two inputs F, G utilized only in the last stage of a group, sum output K, carry output C and regenerated carry output D. Control signals L, M order addition and subtraction respectively. Fig. 1 (not shown), shows a parallel adder for 20-bit numbers built from the blocks of Fig. 2; the connecting lines in Fig. 1 correspond to those (A-G) crossing the broken line of Fig. 2. A carry is transmitted out of a group such as S4-6 if either (a) a carry input is supplied to input G of the last stage, from the previous group, and conditional carries (from gates 9) are generated by each stage of the group (the diodes 14 of each stage form an AND gate at the F input of the last stage), (b) the last stage generates an " unconditional " carry (gate 8), or (c), the last stage produces a conditional carry signal and receives a carry at its input A which may have been generated within the group or derived from the previous group (in which case a carry output will also be transmitted out of the group according to (a) above). The regenerated carry signal is always used for producing the sum output of the next stage, and regenerators 16 produce an inverted signal for application to gates 13 and 15 for this purpose.
Patent GB-1157626-A (GB)
Title: Improvements in or relating to Machines for Cutting Grass and like Vegetable Matter
Inventor: ROWLAND DAVID
IPC: A01D34/54
Filed: 1965-07-28
Abstract: 1,157,626. Lawn mowers. WILKINSON SWORD Ltd. 20 June, 1966 [28 July, 1965; 21 Aug., 1965; 6 April, 1966], Nos. 32207/65, 35977/65 and 15429/66. Heading A1F. A machine for cutting grass and like vegetation comprises a cutting member rotatably mounted in a frame provided with ground-engaging support means, the cut grass or the like being received in a first box mounted on the frame and movable between a first, grass-receiving position and a second position in which its contents fall into a second box mounted on the frame. A cutting cylinder 41 is mounted between and plates 42 (43) pivoted on a pair of frame members 20 (22) supported on front and rear roller assemblies, the grass being directed into a box 94 carried by arms 86 pivoted at 90 to the frame members and the box when full being raised about pivots 90 to discharge grass into a larger box 100 located above the rear roller assembly. The height of the cutting cylinder above the ground is adjusted by pivoting end plates 42, (43) about their connections to the frame members, the end plates being held in adjusted position by means of a rod 60 extending between the end plates which rod protrudes into slots 62 provided in the frame members and is a close fit in holes 64 comprising the slots and has neck portions which can slide in the narrow portion 66 of the slots. A spring loaded ledger blade is adjustable by means of screw 50. The rear roller assembly comprises two rollers 27 having facing re-entrant portions in which gear rings are attached and engage gear rings mounted on the shaft of the roller assembly. The front roller assembly comprises a pair of idlers 37 mounted at the ends of a shaft extending between the frame members. A pair of side wheels 39 are mounted on the frame members and are positioned such that they only contact the ground when the mower meets a bump or rise in the ground. A double pulley 76 is coupled to the shaft of the rear roller assembly and to the cutting cylinder shaft. The mower may be power driven by a removable power pack e.g. an internal combustion engine or an electric motor, drivingly connected to pulley 76. Box 94 may be raised by means of a cord attached to a lever on the mower handles and the cylinder 41 and blade 46 may be replaced by a rotary cutter assembly rotatable about a vertical axis. In an embodiment (Fig. 6) the mower frame comprises a first portion supporting the main driving roller 205 and idler roller 206, and a second portion comprising two side arms 212 pivotable about the axis of roller 205 and supporting cutting cylinder 216 and side wheels 215. Grass is received in box 220 which when full is raised by pivoting side arms 212 so that the grass falls into box 221. A lid 222 is provided for box 221 and is biased by spring 224 to the vertical position. The lid may be depressed to the horizontal position shown dotted to compress grass in box 221. A cable and lever 225, 226 are used to lower the lid.
Patent GB-245665-A (GB)
Title: Improvements relating to water jet propulsion of boats
IPC: B63H25/46
Filed: 1925-06-17
Abstract: 245,665. Dumont, F. A. June 17, 1925. Propelling, steering, and manoeuvring by water jets.-In jet propulsion apparatus, the water nozzle is built up of a number of pipes of successively larger diameter. A steam engine 4 drives a pair of pumps 6, Fig. 1, having inlet pipes 7 opening into the bottom of the ship and outlet pipes 8 with valved connections to pipes 20 supplying the nozzles 24 for proceeding ahead and to pipes 30 supplying reversing nozzles 32. The nozzle 30 is made up of concentric elements 21, 22, 23, the annular portions being coupled by pipes 25, Fig. 3, to a chamber 26 taking water from beneath the boat through a pipe 27. The nozzles 32 have a similar construction of concentric elements. The nozzles 24 and 32 are adapted to be closed by valves 52 and pivoted flaps 40 are also provided for the nozzles 32. A standpipe 10 is provided in the pipe line to act as an air cushion. The main nozzles 24 are slightly inclined downwardly to facilitate water flow.
Patent GB-858853-A (GB)
Title: A method of and apparatus for coating the inner wall of the envelope of an electric discharge lamp with a uniform liquid adhesive
IPC: H01J9/20
Filed: 1959-05-07
Abstract: <PICT:0858853/III/1> The inner wall of the envelope of an electric discharge lamp is coated with a uniform adhesive layer, e.g. of phosphoric acid, by shaking the envelope, filled with adhesivecoated glass beads, with a to-and-fro motion simultaneously with a rotating movement about two mutually right-angled axes.  An apparatus for this purpose comprises a holder 1 for supporting the envelope, rotatably mounted on a frame 2 which is rotatable and longitudinally displaceable on a fixed shaft 3.  A motor 6 rotates the hub of the frame 2 by means of a belt 6, and simultaneously gives it a reciprocating motion through a linkage 7.  The holder 1 is rotated about its axis by gears 12, shaft 8, pulley 9 and belt 10 which encircles the pulley 9 and a fixed pulley 11 on the shaft 3. Preferably the angular velocity of rotation of the holder 1 differs from that of the frame 2.
Patent GB-954823-A (GB)
Title: A printing and duplicating machine having means for interfeeding additional sheets
Inventor: GERICKE ERICH
IPC: B65H3/44
Filed: 1962-04-25
Abstract: 954,823. Feeding sheets. E. GERICKE. April 25, 1962 [April 27, 1961], No. 15721/62. Heading B6B. In a printing and duplicating machine wherein sheets are fed from a main stack by suckers 19 or other gripper means, supplementary sheets can be fed to the machine by the suckers 19 without interrupting the machine, by arranging an additional sheet table lover the main stack for movement thereover to a position beneath the suckers, on the operation of a control lever 12 which causes mechanism constantly reciprocated in synchronism with the machine to be engaged with the table 1. A crank-arm 2 secured to a single revolution shaft of the machine is linked by a rod 3 to a bellcrank 4, 4a, and a rod 5 connects the arm 4a to a slide 6 freely mounted on a rail 7 supported in the frame of the supplementary table 1. The table 1, which is locked in a stationary position when the control lever 12 is in the position A, is fitted with rails 17 at each side which run in rollers 16, and the slide 6 is idly reciprocated along the rail 7. There are two pivoted catches 8, 9 on the slide 6 which are urged downwardly by springs, and which co-operate, respectively, with cams 10 and 11 secured to the rail 7. The rail 7 and its cams 10, 11 can be displaced relatively to the slide 6 and table 1 by the lever 12 which rocks a bell-crank 14, 15 the arm 15 being connected to the rail 7. With the control lever 12 in the position A, the cam 10 is moved into the range of reciprocation of the slide 6 and raises the.catch 8, and the arm 15 also deflects a safety catch 18 to engage a stop on the table 1. When the lever 12 is moved to the position E, the safety catch 18 is raised, the catch 8 is released to engage behind a stop on the table 1, the catch 9 is already located in front of the table stop, and the slide 6 thus carries the table 1 forward into position beneath the suckers 19. During this forward motion, the catch 9 rides along the cam 11 and is released, so that the table remains in forward position when the slide 6 returns. Sheets are now separated from the supplementary table 1 by the suckers 19 until the control lever 12 is moved back to position A.
Patent GB-211401-A (GB)
Title: Improvements in or relating to the production of justified lines of single type
IPC: B41B7/04
Filed: 1923-06-18
Abstract: 211,401. Elliott, R. C., and Lanston Monotype Corporation, Ltd. June 18, 1923. Drawings to Specification. Single-type composing and casting machines; justifying type; machines having separate mould-dimensioning devices for character types and justifying-spaces, such as that described in Specification 8633/99, the adjustment of the mould for justifying-spaces is varied in units or fractions of units of the set, so that a single record-strip may be employed to produce composition in different set-widths. In order to effect this, the justifying-wedges, instead of being calculated in fractions of an inch as heretofore, are based upon units of the set, and are exchangeable so that by the use of suitable normal and justifying wedges, lines may be cast in a set and in a measure different from, but proportional to, those for which the record-strip was composed. Specification 166,466 also is referred to.