baber/WOPTO huggingface dataset:
Patent GB-679040-A (GB)
Title: Improvements in and relating to the manufacture of artificial threads, fibres, filaments and the like
Inventor: CARPENTER ALBERT STANLEY
IPC: D01F6/24
Filed: 1950-03-17
Abstract: Artificial threads are obtained by extruding a solution of a polydiene such as polybutadiene or polychloroprene or a copolymer of butadiene or chloroprene with styrene or acrylonitrile, containing a hydroperoxide as catalyst into a coagulant bath containing sulphur dioxide wherein the coagulant bath contains at least 5 per cent by weight of the solvent used to dissolve the polydiene.  The solvents for the polydiene may be aromatic hydrocarbons such as benzene, toluene, xylene and cumene, and chlorinated hydrocarbons such as trichloroethylene, carbon tetrachloride, chloroform and chlorobenzene.  The preferred solvents for the sulphur dioxide are mixtures of the above hydrocarbons with methanol, ethanol, a propanol or acetone.  The spinning solution may contain at least 10 per cent of the polydiene as claimed in Specification 679,274, and may contain small proportions of methanol or isopropanol to reduce viscosity and is activated by a hydroperoxide such as tetralin hydroperoxide or tertiary butyl hydroperoxide.  Specifications 527,075 and 616,276 also are referred to.
Patent GB-139627-A (GB)
Title: Improvements in the steering and controlling gear of endless track vehicles
IPC: B62D11/08
Filed: 1919-03-18
Abstract: 139,627. Clark, J. K. P. March 18, 1919. Relay or power apparatus. - In endless-track vehicles having fluid-pressure relay concrolling- gear by which the two sides may be controlled independently or simultaneously, a steering-valve and two distributing-valves, one for each track, are so associated with one another and with the operating-rams that the steering-valve, when in its central position, supplies pressure fluid to both distributing-valves, and, when adjusted in one direction or the other, applies brakes to one of the tracks and also cuts off the supply of pressure fluid from the distributing-valve controlling that track. In the arrangement shown diagrammatically in Fig. 1, the rotary steering- valve 23 supplies pressure fluid through either or both of the pipes 34, 40 to the two distributing- valves, which are formed by the right and left ends of the rotary valve 57 operated by the handlever 93. The ram 52, which operates brakes for the left-hand tracks, is supplied with pressure fluid through a double-cone valve 42 and through either of the pipes 35, 49 leading respectively from the steering-valve and from the left distributing-valve. The right-hand brake ram 55 is similarly operated through the pipes 38, 53. When the steering-valve is central, a groove 24 therein connects the two pipes 35, 38 to the exhaust pipe 37, and at the same time another groove 25 connects the pipe 34, 40, leading to the distributing- valves, to the pressure-fluid supply-pipe 33. When the steering-valve is turned to the left, as shown in Fig. 1, pressure fluid is supplied through the pipes 35, 34 to the left-hand brake ram 52 and to the right-hand distributing-valve respectively. The other brake ram and distributing-valve are then both connected to the exhaust pipe 37. The left and right hand distributing-valves are symmetrical about the centreline CD, and the right-hand one only will be described. Pressure fluid from the steering-valve is led through the pipe 34 to a circumferential groove 73 in the distributing-valve, and thence through a longitudinal groove 74, shown also in Fig. 3, to any one of the ports 75 - - 79 communicating respectively with the rams operating right-hand brakes, and first, second, third, and fourth speed driving-gears. Only the ram 101 operating the third-speed gear is shown. All the ports, except that opposite the groove 74, are opened to the exhaust pipe 59 through the groove 82 and holes 83 which communicate with the interior of the valve. A short circumferential groove 84, shown also in Fig. 4, is supplied with pressure fluid, when the steering-valve is central, through a longitudinal groove 86 which communicates with the circumferential groove 87 in the left valve. When the distributing-valves are rotated sufficiently, the groove 84 supplies pressure fluid to the port 80 for operating the main brakes, or to the port 81 for operating the main brake and clutches.
Patent GB-1021789-A (GB)
Title: A device for feeding a blank from a planning machine to a milling machine
IPC: B27C5/06
Filed: 1964-02-08
Abstract: 1,021,789. Woodworking. A. LIE. Feb. 8, 1964 [June 10, 1963], No. 6818/64. Heading B5L. A feeding device for a blank 1, Fig. 1, such as a frame member for a window or door, which is to be fed, preferably directly from a planing machine, in its longitudinal direction and thereafter moved transversely relative to its longitudinal direction upon a slide 5 into a milling machine and past the milling heads, comprises a support 3 for one longitudinal edge of the blank, and a support roller 10 for the opposite edge mounted on a horizontal axis and so arranged that when the rear end of the blank moves past the roller, the weight of the blank will cause the blank to turn about its longitudinal axis or parallel thereto and fall down on to the slide. The blank 1 is fed in a longitudinal direction from the planing machine in the direction of the arrow B, Fig. 2 (not shown) by a conveyer roller 16 over a surface 15 and beneath a vertically adjustable pressure roller 13 and over the support roller 10 and the support 3, the blank being laterally guided by a fence 2. The support roller 10 which is driven by a belt 14 from the roller 16 projects slightly above the support 3 and as the rear end of the blank passes the roller it allows that edge of the blank to drop so that blank rotates about its longitudinal axis and falls into the position 9, shown dotted, on the slide 5 of the milling machine. On falling on the slide, the blank operates a contact which releases the slide for movement in the direction of the arrow A. During movement of the slide, the blank engages a pivoted lever which is held fast by a snap device 6 and acts to press the blank against an abutment 4 on the slide until a predetermined force releases the latch to permit the lever to swing out of the way about a pivot 8 and the slide to move past a further guide plate 11 which presses the blank against the slide.
Patent GB-908547-A (GB)
Title: Improvements in and relating to magnetic recording and reproduction
IPC: G11B5/02
Filed: 1961-02-24
Abstract: 908,547. Magnetic recording apparatus. COMPAGNIE DES COMPTEURS. Feb. 24, 1961 [Feb. 26, 1960], No. 6836/61. Class 40 (2). [Also in Group XIX] Digital data is recorded on a magnetic medium using a plurality of magnetic reversals per bit period for at least one of the bits 0, 1. Fig. 2 shows a read circuit for data recorded as four complete cycles of reversals for bits 1, and an unmagnetized medium for 0, and Fig. 3 shows a voltage waveform at point K. Rectifying circuit Rd1, R, C integrates the four positive output pulses from read head TL, and bias Er determines a threshold voltage for the " 1 " output, thus minimizing the chance of irregularities in the material causing errors in readout. In a modification, both binary digits may be recorded in this "A.C." manner, but in different phase, a phase discriminator enabling positive and negative output voltages to be obtained for the bits; the reference signal may be recorded in a neighbouring track or as a subharmonic superimposed on the data signals, a frequency divider and multiplier being used in the writing and reading circuits respectively.
Patent GB-674726-A (GB)
Title: Improvements in or relating to the coupling of the platen with the platen ratchet of typewriting, calculating and like machines
IPC: B41J11/24
Filed: 1949-03-14
Abstract: 674,726. Typewriters &c. TRIUMPH WERKE NURNBERG AKT.-GES. March 14, 1949 [Oct. 1, 1948], No. 6874/49. Class 100 (iv). A coupling between the platen of a typewriter or a like machine and the platen ratchet gear, of the kind employing locking members 7 engaging internal teeth 20 of a ratchet gear 19, comprises individually operable clamping members 13 coacting with inclined slots 16 of the locking members 7 and which slide on a bearing support 5 so that unlocking pressure acting radially on the locking members is taken by the support 5. The ratchet gear 19 is freely rotatable on an end capsule 4 fixed to a platen covering cap 2, and the locking members 7 are released from the teeth 20 of the gear 19 by a plunger 26 whose shaft 25 has a length adjusting screw 29 which engages the clamping members 13. These are formed as right-angle brackets and are axially displaceable on spring plungers 14 so that a bridge piece 15, formed by slotting the members 13, and sliding in the slots 16 causes, on depression of the plunger 26, the locking members to disengage from teeth 20. The teeth 7a formed on the locking members can be regarded as narrow radial sections of a gear wheel which if complete would have "n" teeth. The number of teeth 20 on the gear 19 is n +1 or n -1 teeth so that one locking member will always engage between the teeth 20 as shown in Fig. 5.
Patent GB-100992-A (GB)
Title: Trimming Mechanism for Sewing Machines.
Inventor: FAIRWEATHER WALLACE
IPC: D05B35/06
Filed: 1916-05-16
Abstract: 100,992. Fairweather, W., (Singer Manufacturing Co.). May 16, 1916. Sewing - machines; trimming or cutting. - A seam-trimmer consists of a circular guide - frame 49, Figs. 1, 3, 4, and 6, enclosing a circular trimming - knife 51, Fig. 7, and formed with a plate 48 which can be adjustably fixed on the bed of the machine. The frame is formed with an opening 86, Fig. 4, and lies within an opening 86, Fig. 4, plate, which serves as a shoot for the several matenial. Secured within the frame is a fixed guide-ring 54, Fig. 8, having a stationary cutting- edge 55 and a cover-plate 56. The knife oscillates within the ring and has edges 52, 53. The operating-mechanism, which can be put into or out of operation at will, consists of a bar 63 reciprocated vertically by engagement with a cam 60 on the shaft 4, and connected by means of a latch connexion to a link 76 having a stud 77 engaging a hole 78 in the knife. The latch 68 is pivoted to a bar 67 sliding through a sleeve 72 fixed to the bar 63. The tongue 75 of the latch enters a slot 74 in the sleeve. In putting the knife out of action, the link 76 is depressed until.the stud 77 comes to rest at the bottom of a slot 84 in the frame, thus putting the trimmer-edge out of its field of action.
Patent GB-940212-A (GB)
Title: Improvements relating to rotary compressors
Inventor: BAINES DOUGLAS LEONARD
IPC: F04C18/34
Filed: 1959-02-27
Abstract: 940,212. Rotary compressors. A.E.I.-HOTPOINT Ltd. Feb. 17, 1960 [Feb. 27, 1959], No. 6979/59. Heading Fl F. A rotary compressor of the gyratory piston type has an abutment 13 which is resilient in the transverse direction, and comprises a U-section spring blade (Fig. 3) held in the compressor housing by pins 7 in the housing end walls and urged against the walls of a slot 4<SP>1</SP> in the gyratory rotor 4 by the pressure of lubricating oil introduced between the limbs of the U. Lubricating oil is drawn from a sump (Fig. 1) through a passage 22 by a pump formed by an eccentric portion 11 on the shaft 3, and a plunger, and is pumped to the surface of the crankpin 3<SP>1</SP> on which the rotor is mounted, and into the rotor slot. The oil is discharged through a pipe 19 leading above the compressor and thus maintaining a minimum head of oil in the compressor. The compressor exhausts into the casing 1 to allow oil to settle in the sump. The drive shaft 3 is fixed to the rotor 8 of an electric motor.
Patent GB-659838-A (GB)
Title: Improvements relating to frequency multiplying circuits
IPC: H03B19/10
Filed: 1949-03-15
Abstract: 659,838. Frequency multiplying circuits. METROPOLITAN-VICKERS ELECTRICAL CO., Ltd. March 15, 1949, No. 7089. Convention date, April 16, 1948. [Class 40 (vi)] In a frequency multiplier circuit in which oscillations at the required harmonic frequency are fed to the grid circuit of a valve which draws grid current during part of each cycle of operation, an impedance tuned to the fundamental frequency is inserted in the grid circuit across which a voltage is produced which neutralizes any other voltage at the fundamental frequency present in the grid circuit. The Figure shows a frequency doubling circuit in which oscillations at a frequency f from a source 11 are applied to a valve 10, the anode circuit of which comprises a transformer which has both its primary and secondary windings tuned to a frequency 2f. The voltage across the tuned secondary is applied to an amplifying valve 20 to produce an output voltage across a load 27. The voltage at the grid of valve 20 at frequency 2 f which would otherwise be amplitude-modulated at a frequency f produces grid current flow during part of the cycle and is corrected for by a biassing circuit 23, 24 which is tuned to frequency f. A voltage at frequency f is produced across this correcting circuit which offsets the amplitude modulation so that the output voltage across load 27 has no component at the fundamental frequency.
Patent GB-546075-A (GB)
Title: Improvements in and relating to bolting cloth, grit gauze and the like
IPC: D06M23/06
Filed: 1940-12-24
Abstract: 546,075. Stiffening artificial textile fabrics. COURTAULDS, Ltd., and McFARLANE, R. A. Dec. 24, 1940, No. 7095/42. Divided out of 546,052. [Class 2 (ii)] [Also in Group VIII] Bolting cloth, grit gauze or the like is made by weaving in a plain weave thermoplastic artificial threads containing one or more continuous filaments and preventing the threads from slipping over one another by thermally welding the warp and weft threads at their crossings, with or without the use of a swelling agent. When multi-filament threads are used they should be given sufficient twist, e.g. 10-40 turns per inch to confine the filaments to the parent thread. As thermoplastic threads there may be used those of cellulose acetate or of a resin formed by co-polymerization of vinyl alcohol and vinyl acetate, e.g. of the resin sold under the Registered Trade Mark " Vinyon." In an example, a plain woven fabric made of " Vinyon " threads is subjected to a decatizing (dry steaming) treatment or to a calendering treatment at 150F. or more. Specifications 462,242, 499,106, [Group V]; and 513,354 are referred to.
Patent GB-629647-A (GB)
Title: Improved gear control position indicator for motor vehicles
IPC: F16H63/42
Filed: 1946-03-07
Abstract: 629,647. Controlling motor vehicles. ING. F. JANECEK FACTORY OF ARMS, Ltd. March 7, 1946, No. 7148. Convention date, Nov. 28, 1944. [Class 79 (v)] In a device for indicating the position of the gear lever, one or more of a group of electric signal lamps are lit or extinguished for each position, the total number of bulbs being less than the number of gears. Fig. 1 'shows three signal lamps arranged in the top of a motor-cycle tank, the left-hand lamp being lit when 1st or 3rd gears are engaged, the central lamp when the gear is in neutral, and the right-hand lamp when 2nd or 4th gears are engaged. Fig. 4 shows appropriate switching arrangements, comprising the gear lever k plunger d and contacts a<SP>1</SP>-a<SP>4</SP> representing 1st to 4th gears and contacts an the intermediate neutral positions. Wires b<SP>1,3</SP> b n  and b<SP>2,4</SP>, lead to the lamps <SP>1,3</SP>N and <SP>2,4</SP>. Alternative combinations of lamps are described, and the lamps may be situated in the top of the head lamp.
Patent GB-575868-A (GB)
Title: Improvements in pencil leads and the like graphite marking elements
IPC: B43K19/02
Filed: 1944-04-19
Abstract: 575,868. Lead pencils. FERST, Ltd., M. A. April 19, 1944, No. 7203. Convention date, May 19, 1943. Drawings to Specification. [Class 146 (iii)] Graphitic pencils are made so as to be porous and the pores are filled with an impregnant which may act as a colouring agent, the pencil being formed by mixing graphite with a binding material such as clay and with a distending material which is capable of being reduced by volatilization, by charring, or by extraction by means of a solvent. The distending material may comprise soaps, vegetable dust or fibre, and synthetic fibres, which are reduced in firing of the lead. Powdered naphthalene, waxes, or sulphur may be used and be reduced during or before firing. Finely divided metal, or metallic salts of copper or the noble metals may be used, and the fired lead is treated with weak acid to remove the fine metal particles. The lead is formed into rods by moulding or extrusion, and the firing or acid treatment carried out subsequently, and then the impregnant is introduced. This may take the form of oils or waxy materials, and a colouring material may be used which may be such as to make indelible marks, or the impregnant may contain an ionogen and will produce marks which conduct electricity.
Patent GB-944290-A (GB)
Title: Improvements in or relating to magnetic register devices
Inventor: GREER RONALD
IPC: H04M3/08
Filed: 1961-02-28
Abstract: 944,290. Automatic exchange systems. BRITISH TELECOMMUNICATIONS RESEARCH Ltd. Feb. 20, 1962 [Feb. 28, 1961], No. 7310/61. Heading H4K. In a magnetic drum storage arrangement for subscribers' meter totals a fault condition detected in a store gives rise to a general alarm and causes a fault location circuit to be fed with pulses TWn, TDv, TCw, and TBx, which give the track number and hundred, tens, and units groups, respectively to identify the store location. The invention comprises employing four multi-position switches each of which gives access separately to the pulses TW1 to TW8, TD1 to TD10, TC1 to TC10, and TB1 to TB10, so that the pulses sent from a faulty store may be matched order by order with pulses selected over the switches. The final position of the switches indicates the store location visually. In Fig. 1 which shows switches SW1, SW2, giving access to TC and TD pulses only, pulses from a faulty store appear as a signal MP to control a gate G1 and a distributer switch with banks SW3a, SW3b, is first used to connect up the wiper of the switch (not shown) giving access to pulses TW. This switch is turned until a match is made with the corresponding component of signal MP when gate G1 opens and an indicator toggle ML is set. The distributer switch is advanced to the switch (not shown) giving access to the pulses TD and a further match is made. The process is repeated for the remaining orders TC and TB. The wipers of the switches do not bridge adjacent contacts so that a buffer transistor is necessary in the input to G1. To reset the indicator toggle ML the bank SW3b is arranged to open gate G2 at each step. If faults occur together it is necessary to govern gate G1 with the results of previous matching to avoid spurious identification. Thus, in Fig. 2, the wiper which stand 3 on the identified TW pulse is connected to a bank SW3c of the distributer so as to govern G1 during all matching operations. Similarly, banks SW3d and SW3e connect the matched TD and TC pulses to G1 as and after they are discovered. The signal MP is thereby examined for one order and all preceding higher orders are confirmed at the same time. The switches may be controlled automatically. It may be arranged that once identification of a fault is completed the control that the offending store has over the general alarm circuit is inhibited so that other faults occurring concurrently may be exposed.
Patent GB-808852-A (GB)
Title: Improvements relating to collapsible structures
Inventor: LOBELLE MARCEL JULES ODILON
IPC: B64C3/30
Filed: 1956-03-08
Abstract: 808,852. Aircraft framework. M. L. AVIATION CO. Ltd. Feb. 8, 1957 [March 8, 1956], No. 7321/56. Class 4. An aircraft structure comprises an outer envelope of flexible material braced by a framework comprising longitudinal and lateral members, wherein the longitudinal members are enclosed in flexible sleeves secured to or forming part of the outer envelope, and are detachably secured to at least some of the lateral members which they cross. The wing of Fig. 1 comprises ribs 1 apertured to receive spars 2, 3, sleeves 4, 5 of the same material as the wing covering 6, e.g. fabric, rubber, or a synthetic plastic, covering the spars and being interconnected by webs 7. Each sleeve 4 or 5 is attached to the covering 6 and sealed to the adjacent rib by an attachment ring 10. Pins 11 lock the ribs to the spar, and when withdrawn permit withdrawal of each spar from the sleeves and collapsing of the wing in concertina fashion as shown, or by rolling it up. Bracing wires 13 are provided and the covering 6 is under tension when the spars and pins 11 are inserted. Additional formers 14 are used. An aileron 20 is constructed similarly with a spar 23, ribs 21, sleeve 24, skin 25 and pins 26. Spigots 30 are secured to each rib, two facing in one direction and one in the other, and cooperate with bored lugs 31 on the wing, so that a positive location is made when the aileron is extended. A horn 32 is connected to control mechanism. The wing may be inflated when in use. Each spar may be constructed in short sections, as shown by the junction 35, and dis-assembled when the wing is collapsed. The fuselage may be constructed in similar fashion, Fig. 2 (not shown). Specification 797,376 is referred to.
Patent GB-799614-A (GB)
Title: Pressure indicating system
IPC: G01L9/00
Filed: 1956-03-08
Abstract: 799,614. Fluid pressure indicating systems. BENDIX AVIATION CORPORATION. March 8, 1956 [March 14, 1955], No. 7331/56. Class 40 (1). In a fluid pressure indicating system the current through an indicating galvanometer is reversed when the fluid pressure rises above, and is reduced to zero when the fluid pressure falls below, predetermined values, alterations in circuit connections being effected mechanically in response to variations in fluid pressure. As shown, an indicating galvanometer 25 and a series resistor 31 are connected in parallel with a resistor 28, the whole being in series with a resistor 29 and supplied from a D.C. source 26. The galvanometer 25 is shunted by a 3-position switch 14 operated by a bellows 11 responsive to fluid pressure. When the pressure is normal the switch 14 is open, terminal 32 of galvanometer 25 being positive relative to the other terminal 33, and the galvanometer pointer.34 is deflected. An excess of pressure expands bellows 10 to close the upper pole 22 of switch 14 thus connecting galvanometer terminal 32 to the negative pole of D.C. source 26 and reversing the galvanometer current and the direction of deflection of the pointer 34. When the pressure in bellows 10 falls below the predetermined level, the lower pole 19 of switch 14 is closed, shorting out the galvanometer, pointer 34 adopting a null position, as it does also when source 16 fails. The limits of normal indication can be varied by adjusting screws 18, 21 in switch poles 19, 22 respectively.
Patent GB-802480-A (GB)
Title: Improvements in or relating to oil-cooled pistons for internal combustion engines
IPC: F02F3/22
Filed: 1956-03-08
Abstract: 802,480. Lubricating. SCHMIDT G.m.b.H., K. March 8, 1956 [March 23, 1955], No. 7338/56. Class 12 (3). [Also in Groups XXII and XXVI] Oil is supplied to a cavity in the head of an internal-combustion engine piston through a bore 26 or 32 in the connecting rod, Figs. 4 and 5 respectively, both to cool the head and to lubricate the gudgeon-pin. In the embodiment shown in Fig. 2 an oil feed is branched from the cooling oil pipe 14 to the gudgeon pin boss 15. Fig. 6 shows a modified form in which the gudgeon-pin is carried in an inserted portion 38 having a hole 40 from which returning cooling oil flows to the crankcase by way of the gudgeonpin bearing.