baber/WOPTO huggingface dataset:
Patent GB-437292-A (GB)
Title: Improvements in or relating to differential pressure gauges for use with flow meters
IPC: G01F1/37
Filed: 1934-04-27
Abstract: 437,292. Differential pressure-gauges. ELECTROFLO METERS CO., Ltd., and ENGEL, F. V. A. E., Abbey Road, Park Royal, London. April 27, 1934, Nos. 12733/34 and 10809 /35. [Class 106 (ii)] One or more shaped liquid displacers are arranged in the low pressure limb of a U- tube manometer so that in the zero position they are disposed above or with the major portions above the surface of the liquid in that limb. In Fig. 1 a shaped displacer 3 is arranged in the low pressure limb 1 and has a screwed shank passing through the cover 4 by which it may be adjusted. It is disposed so that the tip is just in or above the surface of the liquid. A float member 15 in the other limb transmits movement to an indicating mechanism. Fig. 2 shows a tubular displacer 3a shaped externally, and a further modification comprises a tubular displacer shaped internally. In further forms two displacers are used one of which comprises a tube inside which is a second displacer both being suspended by adjustable screws from the cover. In one of these forms the lower edge of the tubular displacer is shaped to take charge of variations near zero, the other taking over for the remainder of the scale. In the other form the tube is not flush with the base of the leg. In a final form, Fig. 6, a displacer 28 depends from a cover 29 which is shaped internally. In this form the other leg has depending into it a series of conductors 26 of different lengths. These are connected to bobbins of resistances so that as the liquid falls, more and more resistance is switched into the circuit. Specification 409,218, [Group XXXVI], is referred to.
Patent GB-1198234-A (GB)
Title: An Improved Transmission System of the Kind Whereby a Single Energy Source is Applied to a Plurality of Loads
IPC: F15B11/17
Filed: 1969-03-12
Abstract: 1,198,234. Hydrostatic transmission. LINDE A.G. 12 March, 1969 [13 March, 1968], No. 12913/69. Heading F2D. In a transmission system for a tractor wherein a first hydrostatic transmission 2, 5 driving the tractor wheels and a second hydrostatic transmission 1 (or 24), 11 operating a power shovel are driven by a common prime mover of limited power, a control 12 (or 28) which normally limits the input capacity of the second hydrostatic transmission increases its input capacity above the limit when the motor 5 of the first hydrostatic transmission overruns the pump 2. The displacement control of the pump 2 is linked to a valve 15 which connects the return line between the motor 5 and pump 2 to the control 12. In Fig. 1 a fixed displacement pump 1 supplies pressure liquid through a reversing valve 8 to a motor 11 and the control 12 comprises a relief valve loaded by a spring 19 to limit the delivery pressure 7 and thus the input capacity of the pump 1. When the motor 5 overruns the pump 2 a pressure increase in the return line 3 or 4 is transmitted through the valve 15 to a piston 18 which additionally loads the spring 19 of the relief valve 12 and thus increases the permissible delivery pressure 7 from the pump 1. In Fig. 3 a variable displacement pump 24 which supplies pressure liquid through the valve 8 to the motor 11 has its displacement controlled by a servomotor 28. As the delivery pressure of the pump 24 increases it acts on the servomotor 28 against the bias of a spring 29 to reduce the displacement of the pump 24 and thus limit its input power capacity. On overrun of the motor 5 the return line pressure increase assists the spring pressure 29 to increase the displacement of the pump 24 and thus increase its permissible input power capacity. In Fig. 4 (not shown) an additional chamber (32) of the servomotor 28 permits independent control of the displacement of the pump 24. In Fig. 5 (not shown) a pressure reducing valve (39) is provided in the line between the valve 15 and servo 28. The pressure drop across the valve (39) is varied in accordance with the displacement of the pump 2. In Fig. 6 (not shown) a pressure reducing valve (43) is provided in the line transmitting the delivery pressure of the pump 24 to the servo 28 and the pressure drop across the valve (43) is increased as the return line pressure supplied through the valve 15 increases. The displacement of the pump 24 is thus increased with increasing return line pressure.
Patent GB-552473-A (GB)
Title: Improvements in and relating to brushes
IPC: A46D1/00
Filed: 1941-10-07
Abstract: 552,473. Cellulose acetate bristles and brushes. COURTAULDS, Ltd., and WEIGHAM, W. R. Oct. 7, 1941, No. 12932. [Class 2 (ii)] Brushes are made with bristles of at least 200 denier each and consisting of acetoneinsoluble cellulose acetate obtained by acetylating regenerated cellulose filaments to such an extent that they have an average content of between 18 and 32 per cent. of acetyl calculated as acetic acid on the moisture-free cellulose acetate and under such conditions that they are more highly acetylated in their outer layers than in the interior. The bristles may be used in making tooth-brushes or hairbrushes. Acetylation of the regenerated cellulose filaments in such manner that the cellulose does not go into solution may be carried out in presence of potassium acetate and in absence of an acid catalyst. In an example regenerated cellulose monofils are soaked with potassium acetate solution, centrifuged and dried. They are then heated with acetic anhydride for 1 hour at 125‹ C. The residual acetic anhydride is removed and the monofils are washed and dried. Specification 353,978 is referred to.
Patent GB-128984-A (GB)
Title: Improvements in Valve Gear for Internal Combustion Engines.
IPC: F01M9/10
Filed: 1917-09-10
Abstract: 128,984. Royce, F. H., and Rolls- Royce, Ltd. Sept. 10, 1917. Channels in internal-combustion-engine parts.- To lubricate the cam rollers and rockers actuating the overhead valves of an internal-combustion engine, oil under pressure is supplied through the hollow cam shaft a and passes through passages d<2> in the bearings to hollow fulcrum pins e' carrying rockers e. Openings d<10> lead to the bearing- bushes e<2>, and passages d<5>, d', d<9> convey oil through the rockers and the hollow pins g<1> to the bearings of the rollers g which engage the cams a<1>. Oil escaping from these bearings lubricates the cam-surfaces.
Patent GB-1339053-A (GB)
Title: Method for the preparation of aromatic a-amino acids and intermediates therefor
Filed: 1971-05-04
Abstract: 1339053 Substituted phenylglycines and imino intermediates ASTRA LAKEMEDEL AB 4 May 1971 [4 May 1970] 12972/71 Heading C2C  Compounds of Formula V and acid addition salts thereof wherein R<SP>1</SP>, R<SP>2</SP>, R<SP>3</SP> and R<SP>4</SP> are H, OH, C 1-3  alkoxy or C 1-3  alkyl provided one is other than H, and R<SP>5</SP> is C 1-5  alkyl or aryl are prepared by reduction of imines of Formula IV which are novel compounds except for the 2,4- dihydroxy compound and are prepared by reaction of a compound of Formula II with a compound NC-COOR 5 . The ethers and esters of Formula V may be hydrolysed to the phenols and/or acids. Ethyl oxamate is prepared by reaction of NH 3  on diethyl oxalate and is then dehydrated with P 2 O 5  to ethyl cyanoformate.
Patent GB-915291-A (GB)
Title: Improvements in or relating to heat exchange systems
Inventor: GARDNER HENRY JOHN
IPC: F23M20/00
Filed: 1959-04-16
Abstract: 915,291. Fluid heating systems. GREEN & SON Ltd., E. April 19, 1960 [April 16, 1959], No. 12977/59. Classes 64 (1) and 64 (3). At least a portion of a stream of air, water or other fluid which is to be heated by furnace flue gases in a heat exchanger 1 is preheated in a heat exchanger 3 by fluid which has passed through the heat exchanger 1 and then through a heat exchanger 2 upstream of the latter in the path of the flue gases and the fluid duet interconnecting the preheater 3 and heat exchanger 1 is so arranged that the colder zones of the heat exchanger (e.g. zone C) receive the fluid from the warmest zones of the preheater (e.g. zone D). An interstage heater (not shown) may be interposed in the fluid duct interconnecting the heat exchangers 1 and 2.
Patent GB-961151-A (GB)
Title: Improvements relating to diaphragm valves
IPC: F16K7/12
Filed: 1959-04-16
Abstract: 961,151. Valves. L. SUMMER. July 6, 1960 [April 16, 1959], No. 13025/59. Addition to 808,074. Drawings to Specification. Heading F2V. A diaphragm valve as described in the parent Specification is modified by replacing the parallel upper and lower peripheral surface of the diaphragm by a wedge-shape or circular or oval bead shape formation providing improved anchorage. Specification 926,129 also is referred to.
Patent GB-514316-A (GB)
Title: Improvements in methods of transforming varying electric currents
IPC: H01F27/24
Filed: 1938-05-02
Abstract: 514,316. Saw-tooth oscillators. FERNSEH AKT.-GES. May 2, 1938, No. 13038. Convention date, April 30, 1937. Drawings to Specification. [Class 40 (v)] [Also in Group XXXV] Reduction of the effective inductance of a transformer for transforming a cyclically varying electric current is avoided by converting this current into a current of rectilinear waveform and applying the current of rectilinear waveform to a transformer so constructed that the value of the product p oca is substantially greater than 1.5 where a is the thickness of the iron core laminations and p - #WKFGFP / 2 where w is the pulsatance, KF (#<1>#) is the conductivity of the uron, GF is the permeability of the iron and P=4#10<-9>. The current of rectilinear waveform may have a D.C. component and the transformer laminations may be such that a = #12ÎTHo / PÎGEÎHmax where T is the periodic time, Ho is the premagnetizing field and Hmax is the peak value of the time proportional field. In a time base oscillator circuit for use with cathode ray tubes incorporating a transformer constructed as defined above the current applied to the transformer rises slowly to a maximum and declines rapidly in each cycle. The steady field applied to the iron core during the rapid decline of the current may be greater than that corresponding to saturation of the iron. The invention may be used in connection with oscillographs and line frequency scanning oscillators of television receivers.
Patent GB-1214542-A (GB)
Title: Capstan head with a pawl-and ratchet mechanism
Inventor: UTERMOEHLE ADOLF
IPC: B66D1/74
Filed: 1968-03-18
Abstract: 1,214,542. Capstans; ratchet mechanisms. WESER A.G. 18 March, 1968 [17 March, 1967], No. 13040/68. Heading B8B. A capstan head is provided with a ratchet wheel 2 engageable by a pawl 4 in the form of a toggle lever which in its locking position shown, is held in a straight condition by a pivoted lever 7 having a free end engageable by a releasing device 9. To release the pawl 4, the device 9 is manually pivoted via links 10, 11 and a cable 12 and the lever 7 is pivoted about 8 by the folding of the pawl 4 about its toggle joint 6, the folding being caused by rotation of the wheel 2 under load. Guides 13 and stops 14 control the movement of the pawl 4 and lever 7, and springs bias the toggle lever into the toggle straight condition. The whole of the pawl mechanism is mounted on a base-plate 3.
Patent GB-528688-A (GB)
Title: Improvements in or relating to intervalve coupling circuits
IPC: H03F1/50
Filed: 1939-05-02
Abstract: 528,688. Valve amplifying circuits. STANDARD TELEPHONES & CABLES, Ltd., and CORFIELD, D. N. May 2, 1939, No. 13104. [Class 40 (v)] An intervalve coupling for very high frequencies comprises an inductance L in series with a blocking condenser Cl between the anode of a first valve V1 and the grid of a second valve V2, the inductance being series tuned to resonance by the inherent gridcathode capacity (including the stray capacity of wiring &c.) of valve V2, and the direct-current supplies to the anode and grid being made through chokes or resistances RFC directly connected to the opposite sides of condenser C1. The circuit shown gives a step-up effect, and a step-down effect may be obtained by interchanging the inductance with the condenser C1 and chokes RFC. Tuning is effected by varying inductance L or by a small trimmer condenser. The circuit shown is designed for use in a transmitter between frequency-multiplying stages and output stages but the invention is also applicable to receivers.
Patent GB-498591-A (GB)
Title: Improvements in or relating to surgical bandages
IPC: A61F13/00
Filed: 1937-05-08
Abstract: 498,591. Surgical dressings. SAWYER, L. T. May 8, 1937, No. 13199. [Class 81 (ii)] [Also in Group VIII] A surgical dressing comprises sheets 130 of' absorbent gauze &c. enclosed between self-adherent layers 160 of open-mesh textile fabric, having the threads coated with underlying and overlying coats of vulcanized and unvulcanized rubber latex respectively, with or without intermediate layers 150. Shearing of the material closes the edges 18, 20.
Patent GB-132184-A (GB)
IPC: A01M7/00
Abstract: 132,184. Robinson Bros., and Wainwright, A. March 6, 1919. Tank carts.-A spraying-machine, of the type in which a portable machine carries a liquid-container with an air and liquid pump and one or more sprayers, comprises a barrow-like frame having one wheel a on an axle b mounted in bearings c fitted on arms d between which the container e is mounted on ball trunnions f. A cam h, disposed on the axle b or the wheel a, rocks a lever j connected by a link n to the container e, and so agitates the liquid. A spring l returns the container to its original position. The cam and lever may be arranged to operate an agitator within the container. A pair of arms o having a clamping-member p supports a preferably rigid pipe q at any desired height or angle, the pipe carrying sprayers z, z<1> and being connected to the container by a tube r provided with a valve t. The container carries a pump u by which air and liquid can be pumped into the container. A liquid float valve y is fitted in a cage above a valve seat in a closed chamber x at the base of the container to prevent the escape of compressed air when the liquid has been discharged through the sprayer pipe.
Patent GB-592824-A (GB)
Title: Punch set for punching and riveting machines
IPC: B21D28/34
Filed: 1945-05-28
Abstract: 592,824. Punching; riveting. ENGINEERING & RESEARCH CORPORATION. May 28, 1945, No. 13265. Convention date, May 2, 1944. [Class 83 (iv)] In a combined riveting and punching machine in which the punch retains the sheets in alignment until expelled by the rivet, the punch 22 is separate from an adaptor 20 in order to allow of upward removal of the punch for sharpening or reversal. The punch is projected through an anvil 2 by a wedge 30 and stripper 10 is raised by a fluid operated lever 12.
Patent GB-132773-A (GB)
IPC: F02M19/03
Abstract: 132,773. Blanchereau, R. N. Sept. 19, 1918, [Convention date]. Spray carburettors.-In carburettors having a suction-actuated choke-tube such as that described in Specification 107,965, the choke-tube a is employed in conjunction with a cap b on the nozzle d, said cap having a central bore h, to which air is supplied from the inlets r, t through lateral apertures i, which may be adjusted by a ring c. The choke-tube, in its lowest position, rests on the cap b, and has its lift adjustable by a stop g. The nozzle is held by the cap, and the ring c is locked by a nut l.
Patent GB-167595-A (GB)
Title: An improved tractor plough
IPC: A01B63/18
Filed: 1920-05-14
Abstract: 167,595. Martin, W. E. May 14, 1920. Ploughs. - In a tractor plough in which the land and furrow wheels are carried by cranked axles having upward extensions linked together, and in which automatic mechanism is provided for partially rotating the axles to lift the ploughs, the lifting mechanism is driven from the furrowwheel and means are provided for adjusting the land and furrow-wheels simultaneously and the land-wheel separately. The land-wheel 1 is adjustable separately by means of a lever 12 pivoted on an upward extension 6 of the cranked axle 4 of the furrow-wheel 2 and connected below the pivot to a link 7 pivoted on an extension 5 of the land-wheel axle 3. The locking-quadrant 15 for the lever 12 is formed on the link 7. The wheels 1, 2 may be adjusted simultaneously by means of a lever 8 linked to a crank on an arm 11 on the axle 4. Mechanism for raising the castorwheel 20 is connected by a rod or chain 16 to the ordinary lifting-mechanism driven from the furrow-wheel 2, which is in advance of the landwheel 1.
Patent GB-1079785-A (GB)
Title: Converter system
IPC: H01L25/03
Filed: 1965-03-30
Abstract: 1,079,785. Converting. BROWN, BOVERI & CO. Ltd. March 30, 1965 [April 1, 1964], No. 13380/65. Heading H2F. In a converter with several converting elements connected in parallel between parallel bus-bars the connections to the bus-bars are so arranged symmetrically that the resistances of all the current paths are as nearly equal as possible.
Patent GB-378077-A (GB)
Title: Improvements relating to radio frequency signalling systems
IPC: H04B3/56
Filed: 1931-05-06
Abstract: 378,077. Wired wireless systems. ECKERSLEY, P. P., 82, Swan Court, Chelsea, London. May 6, 1931, No. 13419. [Class 40 (v).] In a wired wireless system employing feeders h, l including a low-frequency transformer p, s a path for high-frequency energy between primary and secondary comprises a pair of condensers c1, c2 with the point between them earthed through an aperiodic circuit comprising a coil k having a high impedance for high-frequency and a low impedance for low-frequency currents. Fuses f1, f2 or other automatic cut-outs are connected in series with the condensers.
Patent GB-1465187-A (GB)
Title: Cathode-ray tube and application thereof
IPC: H01J29/32
Filed: 1974-03-26
Abstract: 1465187 Luminescent screens THOMSONCSF 26 March 1974 [27 March 1973] 13452/74 Heading C4S [Also in Division H1] A c.r.t. display screen comprises a substantially non-remanent phosphor 1, remanent phosphor 2 with inert barrier B and a substantially non-remanent phosphor 3 with a barrier B<SP>1</SP>, the colour of phosphor 3 superimposed on that of phosphor 1 producing a colour subjectively the same as that of phosphor 2 so that when the beam voltage is increased to produce a persistent trace, the "flash" effect is eliminated. The respective emissions may be green, orange and red. Fig. 1 is schematic only, and is intended to include a mixture of coated phosphors for example "Rise time" requirements of the phosphors are discussed. Operation for barriers of different thicknesses is discussed w.r.t., Fig. 4. Between voltages V 01  and V 02 , a non-remanent intermediate colour is produced (e.g. yellow). In Fig. 2, the non-remanent phosphor 1 covers non-remanent phosphor 3 and barrier B<SP>1</SP> and inherently acts as a further barrier. Phosphor powders may be 5 to 20 Á grain size, and the two non-remanent phosphors each in amount 20 to 30% by wt. of the total mixture. Phosphor grains-2 and 3 may be coated to 1 Á thickness. PPI displays are exemplified.
Patent GB-135137-A (GB)
IPC: D03C5/02
Abstract: 135,137. David, A. May 30, 1919. Shedding-motions; shedding-levers. - Heald frames are operated positively by rods attached to the frames at suitable intervals and connected to coaxially mounted levers, which vary in length corresponding to the distances of the heald frames from the axis of the levers, and are actuated by double sets of simple edge cams. As shown applied to a vertical loom, each heald frame i has a rod h attached to it at each side of the loom and connected by two overlapping wires o to the sector end of a corresponding lever j. The levers j are mounted on a fixed shaft g, and their lower ends have rollers l engaging between correspondingly-shaped cams m, n on shafts c, d geared together by equal spur-wheels e, f and to the main shaft b by a pinion a in the gear-ratio of four to one.
Patent GB-566552-A (GB)
Title: Spar-bolt and the like
IPC: F16B35/04
Filed: 1943-08-19
Abstract: 566,552. Making bolts. LINREAD, Ltd., and LYNALL, E. H. Aug. 19, 1943, No. 13515. [Classes 83 (ii) and 83 (iv)] [Also in Group XXV] Caulking.-Bolts, having an intermediate collar of relatively large diameter, have the collar made separately from the shank and attached thereto by displacement of metal. The shanks 2 are machined with a small collar 3 and the collars 1 are produced with a central hole to fit the shank and are counterbored at 7 to leave a substantial shoulder 9. The counterbore has a keyway 8 fitting a corresponding projection 12 on the collar 3 which fills the counterbore 7. Tools indicated in diagram at 14 displace metal from the collar 1 to engage the shank, either or both of which parts may be recessed to facilitate flow of metal.
Patent GB-623864-A (GB)
Title: Improvements in or relating to draught excluding attachments for doors
IPC: E06B7/20
Filed: 1947-05-20
Abstract: 623,864. Draught-excluders. HEMMETT, G. C. May 20, 1947, No. 13600. [Class 20 (iii) ] A draught-excluding attachment comprises an angle-bar 1 to be attached along the lower edge of a door 2, and a bar 3 carrying a flexible strip 4. The bar 3 is hinged to the bar 1 about an axis spaced from the door surface, and biassed by gravity or spring means into an inclined position with the strip 4 raised from the floor, and has a projection 6 at one end to engage the door jamb so as to rotate the bar 3 towards the floor when the door is closed. In the form shown in Fig. 4, the bar 3 is of angle form and the flexible strip 4 is secured by a strip 5. A coil spring (not shown) acts on the hinge 7 to urge the bar 3 into the full line position shown or alternatively the strip 5 acts as a weight. In a modification, the bar 1 has bent over end plates 12 (Fig. 6) between which the bar 3 is pivoted at 13. In this case the bar 3 may be flat as shown and have a metal weight strip 5 above the pivot.
Patent GB-437530-A (GB)
Title: The manufacture of alkylamines
IPC: C07C209/08
Filed: 1934-05-05
Abstract: Individual alkyl halides (as distinct from mixtures), containing more than eight carbon atoms and only one halogen atom, the latter being attached to a terminal carbon atom, are heated with aqueous ammonia or with aqueous or alcoholic solutions of primary aliphatic amines. Secondary amines are thus obtained, with only small proportions of primary and tertiary amines; when the reaction is effected in an aqueous medium, the corresponding alcohols are the main by-products. In the examples: (1) octadecyl chloride and aqueous ammonia yield dioctadecylamine; oleyl chloride similarly yields dioleylamine; (2) tetradecyl chloride and aqueous ammonia yield ditetradecylamine; dodecyl chloride and decyl chloride similarly yield didodecylamine and didecylamine respectively; (3) tetradecyl bromide and aqueous ammonia yield ditetradecylamine; (4) octadecyl chloride and aqueous or alcoholic methylamine yield methyloctadecylamine; oleyl chloride similarly yields methyloleylamine; (5) tetradecyl chloride and alcoholic methylamine yield methyltetradecylamine; tetradecyl chloride and alcoholic n-butylamine similarly yield n-butyltetradecylamine; (6) dodecyl bromide and alcoholic methylamine yield methyldodecylamine; decyl chloride similarly yields methyldecylamine.  Specifications 339,962, [Class 2 (iii)], 359,001, and 371,822 are referred to.