baber/WOPTO huggingface dataset:
Patent GB-161856-A (GB)
Title: Fuel conveying and crushing mechanism for locomotive stokers
IPC: F23K3/04
Filed: 1920-05-21
Abstract: 161,856. Lower, N. M. May 21, 1920. Mechanical stoking.-A section 13, Fig. 2, of a conveyer conduit for feeding fuel to a locomotive fire-box is provided with a flaring crushing- jaw 12 adapted to co-operate with the screw conveyer 10 to reduce the size of the fuel. The forward edge of the jaw 12 is inclined to the sxis of the screw and is parallel to the upper portions of the screw-threads. Teeth 14, 15 are provided on the edge and inner surface of the jaw respectively. The jaw may be provided with a knife-edge at its forward end. A chair 19, Figs. 2 and 4, provided with lugs 20 is formed on the section 13 of the conveyer conduit and is adapted to support the crushing-jaw which is provided with webs 16 and lugs 17 to engage with the lugs 20. The jaw is locked in position by a key 22.
Patent GB-129030-A (GB)
Title: Improvements in Gearing for Connecting Co-axial Shafts.
IPC: F16H1/20
Filed: 1917-09-28
Abstract: 129,030. Siddeley-Deasy Motor Car Co., Green, F. M., and Heron, S. D. Sept. 28, 1917. Toothed gearing.-In gearing for connecting coaxial shafts v, w, in which pinions a, c on the shafts are connected by pinions b, d on a countershaft or countershafts x, the latter pinions are automatically coupled together by centrifugal clutches. In the form shown, taper clutch blocks h, engaging a V-groove in the pinion d, are slidably mounted on arms f on the boss of the pinion b.
Patent GB-910884-A (GB)
Title: Improvements in or relating to the control of electric machines
Inventor: ROBINSON KENNETH ARTHUR
IPC: D01D5/06
Filed: 1958-05-02
Abstract: 910,884. Automatic speed-control systems. LANCASHIRE DYNAMO ELECTRONIC PRODUCTS Ltd. May 19, 1959 [May 2, 1958], No. 14087/58. Class 38 (4). An eddy-current coupling 1 transmits power from an electric motor 2 to a load 3 and has its exciting winding 4 supplied from a two-stage transistor amplifier 6. A reference voltage derived from source 7 is compared with a speedresponsive voltage from tachometer generator 8, the circuit 9 providing an error signal representing the deviation of the load-speed from a desired value. A square-wave output from oscillator 10 is transformed into a voltage of sawtooth form in an integrating amplifier 101, the output of which is combined with the error signal and applied to the amplifier 6 in the form of a sawtooth wave the mean value of which varies according to the value of the error signal. The amplifier 6 is thus switched between its maximum and minimum output conditions so that a square-wave current is supplied to the winding 4, the width of the current pulses being varied in accordance with the error voltage. The loop gain of the system is of such magnitude that the error voltage tends to zero. A rectifier 102 allows the passage of magnetizing current during space periods. In a modification, the elements 10, 101 are omitted and the periodic switching of the amplifier 6 is controlled by feedback from the output of the amplifier. The input stage to the amplifier comprises a bistable multivibrator trigger circuit, the feedback proceeding from the output of the transistor amplifier through an integrating circuit and a coupling circuit to the trigger circuit, Fig. 3 (not shown). In a further arrangement, the eddy-current coupling is replaced by a slipping magnetic clutch which may be of the magnetic powder type, Fig. 5 (not shown).
Patent GB-141247-A (GB)
Abstract: 141,247. Starley, W. June 27, 1919. Forks.-A wheel fork for cycles, motor-cycles, and the like has each side made from metal blanks, one A, Fig. 2, of which is folded on itself to form a tube 2 and a web 3 of double thickness, the others B, Fig. 7, being folded, as shown, to form tubes 7 and webs 4. The double webs 4 are then inserted between the thicknesses of the web 3 and the ends opened inside the tube 2. The edges of the web 3 may be brazed or welded to the tubes 7. End plates 8, 9, Fig. 9, are added, and strengthening-plates 11 may be riveted to the webs to carry bearing pins for the lower links 12.
Patent GB-327887-A (GB)
Title: Improvements in roller-bearing wheels
IPC: B60B37/10
Filed: 1929-05-07
Abstract: 327,887. Rowbotham & Co., Ltd., T., and Jones, W. H. May 7, 1929. Securing hubs to axles.- A roller-bearing cog 5 is removably held in position between the wheel axle 2 and the hub 1 by two keepers 15 which are held in engagement with a peripheral channel 16 in the outer end of the wheel axle 2 by a removable hub cap, the keepers being accommodated in radial slots in the hub. or in the hub-cap, or partly in each. The hub cap may, as shown, be secured by bolts 9, or it may screw onto or into the outer end of the hub.
Patent GB-222909-A (GB)
Title: Method of and mechanism for uniting threads or cords
IPC: D03J1/16
Filed: 1923-05-29
Abstract: 222,909. Marks, E. C. R., (Brighton Mills). May 29, 1923. Warp threads, uniting.-The end's of two threads in or preparatory to weaving or like operations are united by untwisting equal lengths in the ends of the two threads while preventing untwisting or backtwisting in both threads beyond the delimited lengths thereof, uniting the untwisted strands of the two threads and reimparting the normal twist to the united strands, the backtwisting being prevented in one of the said threads by winding the portion adjacent to the delimited length thereof. The extreme end of one thread is clamped between discs 47, 48, Fig. 1, and the other end of the delimited length is held between discs 19, 20. The extreme end of the second thread is held between discs 21, 22 and the thread slipped into a slot 39, Fig. 2, in the flange 38 of a drum 35, the threads being maintained in tension under the action of a spring 14 on the pivoted frame 10. The drum 35 and clamp 47, 48 are rotated together by the motor 37 and driving-cord 53 to untwist the delimited portion of the threads and at the same time the portion of the second thread adjacent to the delimited length is wound up on the drum 35. A nut 57, Fig. 5, travels along the screwed portion 56 of the spindle 46 as untwisting proceeds and finaly strikes a hook 65 resting over a rod 58 thereby moving a rod 62 to the left and causing a lever 71 to be moved about its pivot 72, Fig. 2, and to pull the cord 74 and stop the motor 37. Corresponding untwisted strands a, b, c and x, y, z, Figs. 23 and 24, are then knotted together the uniting points being spaced longitudinally at marking-pins 88. The thread wound on the drum 35 is then unwound, and the twist thereby put into the newly-joined portion, which snaps out of the slots 3 and the clamp 19, 20, is exactly equal to that which was taken out of the delimited lengths, being equal to the number uf turns of thread wound on the drum 35. The means for restoring the original twist to the united strands are other than the means for limiting the untwisting of the delimited lengths, and as shown in Fig. 10; comprise a motor 96 and friction pulley 97 which drives the spool 95 to unwind the thread from the drum 35. The device is described as applied to a backwinder or drum winding-machine and as applied to joining the threads of creel spools for a loom, while modifications of the driving-means shown in Fig. 10 may be provided. In a modification of the stopping-device described with reference to Fig. 5, the screwed shaft 56 is a continuation of the shaft of the driving-motor 37.
Patent GB-495720-A (GB)
Title: Improvements in or relating to the destruction of comminuted material
IPC: F23K3/02
Filed: 1937-05-21
Abstract: 495,720. Pneumatic conveyers ; furnaces. NESFIELD, A. C., and DEANE, B. P. F. May 21, 1937, No. 14208. [Class 78 (i)] [Also in Group XII] Comminuted combustible material, such as wood chips, saw-dust, &c. is destroyed by a furnace 38 into which the material is blown from a hopper 10 by a blower 19. The bottom of the hopper is occupied by a delivery drum 12 furnished with projecting spikes 13, and the lower end of the sloping side 11 of the hopper is formed as a hinged flap 25 held closed by snap bolts 26 and adapted to yield outward when the pressure of the material exceeds a certain value to prevent jamming, a spring returning the flap when the pressure is relieved. The drum is driven through worm reduction 16 and a variable speed gear, and delivers the material into an air channel 18 which the air from the blower 19 reaches through a venturi tube 22 fitted with an adjustable lip 24. A choke 44 can be slid to govern the volume of air blown through, and the drum 12 may be interchangeable with others having different diameters of cylinder. A stirrer 28 fitted with projections 29 is reciprocated vertically in the hopper 10 by means of a pitman 35 coupled to a crank-disc 36. The furnace 38 is provided with a sloping baffle wall 42 which may have a curved top to give the air-borne material a whirling motion and nozzles fed by a pipe 43 from the blower 19 may be arranged behind the wall to assist in the same action. The combustion chamber 37 may be made circular, and the furnace may be employed for steam-generation.
Patent GB-1088591-A (GB)
Title: Improvements relating to a beam-splitting optical arrangement
Inventor: ELPHICK FREDERICK GEORGE HUMPH
IPC: G02B27/10
Filed: 1963-04-10
Abstract: 1,088,591. Optical systems. ELECTRIC & MUSICAL INDUSTRIES Ltd. April 9, 1964 [April 10, 1963], No.14250/63. Heading G2J. [Also in Division H4] In an optical system in which convergent light from an objective 1 is split by dichroic mirror 6 into two beams containing light of different colours, in order to keep the change in the spectral response across the dichroic mirror 6 within acceptable limits, the normal to the mirror is inclined to the axis of lens 1 at an angle not greater than 30. As shown applied to a colour television camera in which beam splitter 4 provides a beam 2 for the luminance tube 5 and a beam 3 for the colour pick-up tubes 11, 12, 13, a pair of dichroic mirrors 6, 7, are arranged in the path of beam 3 with their normals at angles not greater than 30 thereto.
Patent GB-677431-A (GB)
Title: A new or improved attachment clamp
IPC: B25B1/20
Filed: 1949-05-27
Abstract: 677,431. Brackets. NATIONAL COAL BOARD, and HILL, E. A. CARR-. May 18, 1950. [May 27, 1949] No. 14382/49. Class 52 (v). [Also in Group XXV] A bracket e.g. for supporting a lamp in a coal mine comprises a pair of arms H<SP>1</SP> attached to a saddle piece A mounted for instance on a pit-prop, by a chain E tightened by a toggle lever C, the arms H<SP>1</SP> carrying a U-shaped bracket H having slots H<SP>2</SP> in the ends to receive projections S on the lamp &c. The slots are L-shaped and are adapted to secure the squaresection projections S against rotation. The lamp or the like may be turned through 90 degrees by lifting the projections S out of the locking parts of the slots and re-inserting in the new position.
Patent GB-1338839-A (GB)
Title: Device for suspending a measuring instrument inside a line of drill pipes
IPC: E21B47/18
Filed: 1971-05-11
Abstract: 1338839 Boring earth and rock SOC NATIONALE DES PETROLES D'AQUITAINE 11 May 1971 [11 May 1970] 14299/71 Heading E1F An unspecified measuring instrument is contained in a cavity 30 of a housing 2, 3, 4 suspended by resilient members such as 10 in a drill collar 1 forming part of a drill string, and intermittently actuates a valve 5 to close a flow passage 7A so that the increased pressure of drilling fluid above the housing forces a valve ring 21 against a seat 22 closing further passages 8A to create a pressure pulse which is transmitted through the drilling fluid to the surface. Coded information may be transmitted from the bottom of the well by the pressure pulses caused by closing the valve 5. The resilient members are each formed of an elastomaric ring 12 having passages 20 and vulcanized to outer and inner metal rings 11, 13 supported on abutments on the drill collar 1 and housing respectively. The resilience of the rings 12 causes the valve 21-22 to open after the valve 5 has re-opened. The seat 22 may have an elastomeric lining seal 23. When the valve 5 is closed, fluid is by-passed through passages 6.
Patent GB-449497-A (GB)
Title: An improved silencer particularly adapted for silencing the exhaust noises of internal combustion engines and the like
IPC: F01N1/02
Filed: 1935-05-16
Abstract: 449,497. Exhaust and like silencers. PITTIUS, N. C. G. VAN, DAVIES, N. W., and LUDORF, J. F., 178, John Street, Pretoria, South Africa. May 16, 1935, No. 14374. Convention date, June 8, 1934. [Class 7 (ii)] In an exhaust-silencer for internalcombustion engines or blowers, wherein interference of the sound waves is obtained by reflections produced in branch pipes connected to the main conduit, a group of reflector pipes is used for each pure sound tone. Figs. 1 and 4 show a silencer for vehicles or aircraft comprising a rectangular conduit 7 from which branch groups of rectangular pipes 8 ... 12, made into a compact structure as by welding, each group comprising four pipes, such as 13 ... 16, of different lengths extending above and below that required for the particular sound tone. Open-ended branch pipes may be used in place of closed ones, but of double the length. Soundinsulating lagging may be incorporated with the silencer.
Patent GB-1333537-A (GB)
Title: Production of trialkylphosphines
IPC: C07F9/50
Filed: 1972-03-28
Abstract: 1333537 Preparing trialkyl phosphines KNAPSACK AG 28 March 1972 [3 April 1971] 14475/72 Heading C2P  Trialkyl phosphines R 3 P wherein R is C 1 -C 3  alkyl are obtained by flowing a vaporous or gaseous mixture of elemental phosphorus and a C 1 -C 3  alkyl halide by means of a carrier gas, in the absence of oxygen or air, and at 280- 420‹ C over an active carbon catalyst, subjecting the resulting gaseous mixture to fractional condensation to isolate mono- and dialkyl halophosphines and a two-layer forming mixture of trialkylphosphonium halide and unreacted phosphorus therefrom, separating the phosphonium halide and unreacted phosphorus therefrom, purifying the phosphonium halide by heating to above the boiling point of the alkylhalophosphines and then dissolving or suspending the phosphonium halide in water, adding an alkali, e.g. NaOH, Ca(OH) 2  or Na 2 CO 3  to the resulting solution or suspension to give a pH of at least 4, preferably between 9 and 10, and isolating the trialkyl phosphine formed by distillation or phase separation. The preferred starting materials are yellow phosphorus, and methyl chloride (or bromide) or ethyl chloride and it is desirable to use as carrier gas hydrogen chloride (or bromide), hydrogen, nitrogen or argon, or mixture thereof. The catalyst is preferably dried at 350‹ C. to 360‹ C. in the presence of a hydrogen halide before use. The process can be carried out continuously. Specification 1,324,315 is referred to.
Patent GB-637640-A (GB)
Title: A method of shaping wire coil cross-sections
IPC: B21F3/06
Filed: 1948-05-29
Abstract: 637,640. Grinding springs, wire thread inserts, &c. HELICOIL CORPORATION. May 29, 1948, No. 14571. Convention date, June 20, 1947. [Class 60] [Also in Group XXII] Springs, wire thread inserts, &c. are made by coiling a slightly oversize wire in one plane, then sizing the wire by grinding, rolling, milling, or planing, and finally applying the twist. A wire B is fed through a shaped guide 12 between a grooved mandrel 10 and grooved rolls 14, 16. The wire is coiled in one plane between the rolls 14, 16 and the roll 16 cooperates with the mandrel to size the wire by rolling. A blade 20 then deflects the wire to determine the pitch. In modifications the wire is coiled by an off-set abutment then sized by rotary grinding wheels or milling tools or by drawing through a sharp-edged die.
Patent GB-807602-A (GB)
Title: Improved door latch mechanism
IPC: E05B63/20
Filed: 1957-05-08
Abstract: 807,602. Push-pull catches. GENERAL MOTORS CORPORATION. May 8, 1957 [June 21, 1956], No. 14638/57. Class 44 A door latch mechanism comprises a slidable bolt 32 adapted to be engaged by a striker and a trip lever 41 pivotally mounted on and slidable with the bolt, the lever having a pawl 47 adapted to abut against a stop 29 to latch the bolt in a retracted position relative to an opening, an exposed end of the bolt being movable by initial engagement of the striker to further retract the bolt and thereby disengage the pawl from the stop without moving the same out of alignment therewith, continued movement of the striker effecting a pivotation of the lever so as to move the pawl out of alignment with the stop so that the bolt can thereafter slide behind the striker for holding the same in a door closed position. The bolt and trip lever are contained in a casing 12 the bolt being mounted on the casing by means of pins 34 located in elongated slots 33 of the bolt. The lower end of the bolt is wedge shaped having oppositely inclined surfaces 37 and 38 and a rearwardly projecting lobe 39 and it is urged downwardly into the opening, which is formed in the casing, by a coiled spring 28 which is mounted on a guide finger 26 formed in the casing and which engages a projection 43 on the trip lever 41. The lower end 46 of the trip lever projects into the opening when the door is closed so that the bolt is in its latching position. The striker is a roller 51 which is mounted on a plate 22 which also carries a second roller 53, the roller 51 engages the end of the bolt and the roller 53 serves as a guide and abutment in co-operation with a ledge 31 on the casing 21. The latch mechanism is normally attached to a door and the striker plate 22 to the door frame and on the closed position of the door the lobe 39 of the bolt is in engagement with the roller 51 to hold the door closed. When the door is opened by a pull on its handle the roller 51 engages the surfaces 37 of the bolt and moves it upwardly; this upward movement alloves the trip lever 41 to pivot by the pressure of the spring 28 on its projection 43 until eventually its pawl 47 is moved over the stop 29 which is a projection formed in the casing 21. Continued movement of the door so that the roller 51 passes the nose of the bolt eventually allows the bolt to move downwardly again under the pressure of the spring 28 and the pawl 47 engages the stop 29 to limit this movement. When the door is closed the roller 51 engages the surface 38 of the bolt moves the bolt upwardly slightly and when the roller moves passed the nose of the bolt it engages the trip lever 41 and swings it about its pivot so that the pawl 47 moves out of vertical alignment with the stop 29 so that the bolt can move dowwardly to its latching position. In a modification the spring 28 can be omitted in which case the weight of the lever 41 is arranged to bias the pawl 47 to cooperate with the stop 29.
Patent GB-896545-A (GB)
Title: Improvements in or relating to machines for the manufacture of patterned knitted goods
IPC: D04B27/32
Filed: 1960-04-27
Abstract: 896,545. Knitting-machines. LIEBRANDT, K. April 27, 1960 [April 30, 1959], No. 14701/60. Class 74 (2). The yarn guides of a warp machine are actuated from jacquard mechanism for patterning purposes and in order to enable them to be returned to their original positions after selection each guide is surrounded by a flat helical spring 10, 11 resiliently urging it into that position.
Patent GB-640435-A (GB)
Title: Improvements in or relating to culinary appliances
IPC: A47J37/10
Filed: 1948-05-31
Abstract: 640,435. Fittings for frying-pans. POLLOCK, I. R., (formerly POLLAK, I). May 31, 1948, No. 14714. [Class 66] An arcuate tray 1 rests with its rim 4 over the edge of a frying-pan 2 and is held in place by a spring clip secured to the under-surface of the tray 1 by rivets 11. The bottom of the tray may be ribbed at 10 and its outer wall flanged at 9.
Patent GB-1200238-A (GB)
Title: Method of, and apparatus for, controlling the process of electrolytically thinning metal plates
IPC: C25F7/00
Filed: 1968-03-27
Abstract: 1,200,238. Electrolytic thinning. COMPAGNIE GENERALE D'ELECTRICITE. March 27, 1968 [March 28, 1967], No.14816/68. Heading C7B. An electrolytic process of thinning a metal plate 5 arranged as an anode between two cathodes 2, 8 in an electrolytic tank 1, e.g. in the preparation of specimens for electron microscope examination, is controlled by measuring the electrical resistance between the cathodes, e.g. using an electronic amplifying contact voltmeter 12 associated with a potentiometer 15, and stopping the process as soon as this resistance drops below a predetermined value, indicative of a hole being formed in the plate. As shown Fig. 3, one cathode 8 is directly connected to the current source 4 for continuous electrolysis, while the other cathode 2 is alternately subjected to electrolysis and to measurement, e.g. by a reversing relay 13 controlled by an electronic timer 14, for connecting this cathode either to the source (contact 131) or the terminal 12a of the voltmeter (contact 132 ). When the deflection on the voltmeter is sufficient to open the contact 121 (when a hole forms in the plate), relay 9 is de-energized and the contact 91 opens to interrupt the electrolysis. The tank may be a cavity formed between two insulating blocks 171, 172 Fig.4 and divided by the plate 5 into two separate compartments 181, 182 into which the cathodes 2, 8 extend and through which electrolyte from a reservoir 19 is circulated, e.g. by a pump 21 via a common duct 24, to fall back into the reservoir, which is preferably immersed in a fluid 20 e.g. alcohol to maintain its temperature constant.
Patent GB-109331-A (GB)
Title: Improvements in Apparatus for the Reproduction of Sounds.
Inventor: CHALMERS THOMAS
IPC: H04R7/22
Filed: 1916-10-19
Abstract: 109,331. Chalmers, T. Oct. 19, 1916. Telephones -In receivers of the kind wherein the diaphragm is entirely free or is very lightly restrained at its periphery, one or more rings of metal, ebonite, wood, fibre, &c. are arranged to rest on the diaphragm rim or on the flexible material by which it is held. As shown in Fig. 2, two such rings f with bevelled lower surfaces rest on the diaphragm rim. The ring or rings may be formed as disks with a central opening opposite the ear-piece aperture, and may bear continuously on the diaphragm or may have a series of projections resting thereon. The ring may be of magnetic material, or may be a permanent magnet. In Fig. 6, the ring f has an upstanding continuous or interrupted flange q bearing against the flexible material o, for example tissue-paper, by which the cone-shaped diaphragm a is held. The ring f is secured to the casing c by a peripheral flange j. In another form, the ring f is of inverted T-section, the upright arm being secured to the flexible material o, and the horizontal arm being at least as wide as the gap between the diaphragm and the casing. In another modification, the ring f is secured to the upper surface of the casing flange p and has a downwardly-projecting rim resting on the diaphragm, the flexible support o being omitted.
Patent GB-240212-A (GB)
Title: Improvements in transformers for telephony and wireless signalling, and in the method of constructing the same
IPC: H01F19/02
Filed: 1924-06-19
Abstract: 240,212. Cooper, M. June 19, 1924. Transformers.-In shell type transformers for use in wireless signalling and like applications, the windings comprise a number of series connected flat sections wound on one or more bobbins disposed on the centre limb of the core 7, the secondary sections 13, 14, 15 being provided with tappings connected to plug sockets 21 - - 23 or the studs of a multiple way switch on an insulating plato 9 to which the core is secured and which rests on the upper edge of a cylindrical metal casing 10 enclosing the transformer. When sockets are provided for the secondary tappings, a flexible connection 26 having a plug 27 at each end is also provided for selecting various transformation ratios. The cylinder 10 may have an integral bottom as shown, or a separate bottom plate of insulating material may be provided and secured in position by screws passing into a brass frame clamping the core laminations.