baber/WOPTO huggingface dataset:
Patent GB-446459-A (GB)
Title: Improvements in or relating to signalling apparatus for railway level crossings
IPC: B63C11/02
Filed: 1935-06-01
Abstract: 446,459. Level-crossing signals. NAAMLOOZE VENNOOTSCHAP MACHINERIEEN-EN APPARATEN FABRIEKEN MEAF, 30, Croeselaan, Utrecht, Holland. June 1, 1935, Nos. 16003 and 16004. Convention dates, Aug. 24, 1934 and Nov. 14, 1934. [Class 105] In a level-crossing signalling arrangement wherein short trackcircuit sections L, M are provided at the two ends of the stretch and in which further normally energized relays 3, 4 are included in the conductor lines to the track circuits to give a warning signal in case of breakage, these relays 3, 4 are also used for the train control of the signal and thus their contacts are kept regularly in use. The arrangement shown in the Figure has in addition to the normally energized shortsection track relays 1, 2 and control relay 3, 4, further relays 5, 6 normally de-energized but coming into action when the train reaches the short sections N, O butting on the actual crossing. A train entering at the left shunts out the relay 1 which then remains de-energized over a stick shunt circuit including its own back contact 12 and a back contact 63 of the relay 6. The signal control relay 7 is deenergized by the opening of front contact 11a of the relay 1 ; thus the warning signal is brought into operation. When the train reaches the crossing the axles on the sections N, O shunt out the relays 3, 4 and thus their back contacts 33, 43 pick up the relay 5 a front contact 52 of which energizes the relay 6 (over back contact 11b of the stick shunted relay 1). This energization of the relay 6 opens the back contact 63 in the stick shunt circuit of relay 1 which therefore now lifts its contact 11 and opens the circuit of the relay 6. A stick circuit over front contact 51 and back contact 61a maintains the relay 5 energized after the train leaves the sections N, O. The signal relay 7 is energized over the front contacts 31, 41, 21a and 11a to give the clear signal. When the leaving train reaches the end section M the relay 2 is shunted out and its back contact 21b then allows the relay 6 to be energized over front contacts 52 and 11a. The relay 6 then opens its back contact 61a to de-energize the relay 5 ; closes its front contact 62 to maintain itself energized so long as the shunted relay 2 closes the back contact 21b ; and opens the back contact 64 in the stick shunt circuit of relay 2 to allow the relay 2 to lift as soon as the section M is free of axles. The apparatus is thus returned to the normal state. Any conductor breakage which de-energizes the relays 3, 4 will give a warning signal since the front contacts 31, 41 in the line to the signal relay 7 will open. A modification is described in which only one section O is provided at the crossing, the relay 4 being connected directly thereto but the relay 3 only being connected whilst the relay 5 is energized. The arrangement operates properly both with single short vehicles and very long trains.
Patent GB-1136912-A (GB)
Title: Improvements in or relating to electric cables
Inventor: ASHFORD BERTRAM OWEN
IPC: H01B7/285
Filed: 1965-04-14
Abstract: 1,136,912. Cables. PIRELLI GENERAL CABLE WORKS Ltd. 7 March, 1966 [14 April, 1965; 27 Oct., 1965], Nos. 16027/65 and 45440/65. Heading H1A. In an electric cable comprising a core 1 surrounded by impregnated paper insulation 2 and a plastics sheath 8, a metallic moisture barrier 6 is bonded to the inside of the plastics sheath 8 and encloses a separate conductive electrically continuous screening layer 4. The moisture barrier may be of aluminium or copper foil or may be formed as a metal foil/plastics film laminate with the plastics film 7 facing outwards and bonded to the plastics sheath. A thermally insulating layer 5, for example of cotton tape, may be provided between the moisture barrier 6 and the screening layer 4 to prevent excessive heat dissipation during the bonding process. In another embodiment, Fig. 2 (not shown), the moisture barrier is formed over a semi-conducting thermally insulating layer covering the screening layer, and comprises a thin extruded lead layer with an adhesive on its outer surface to facilitate bending and bonding to the plastics sheath. The plastics sheath and film may be polyethylene or P.V.C.
Patent GB-277933-A (GB)
Title: Improvements in indicating or measuring devices for high frequency currents
IPC: G01R19/22
Filed: 1927-06-16
Abstract: 277,933. Dubilier Condenser Co. (1925), Ltd., (Assignees of Nyman, A.). Sept. 24, 1926, [Convention date]. Condensers. - Large currents of radio-frequency are measured by means of a thermal ammeter in series with a condenser, shunted by a condenser of greater capacity. As shown, four condensers C, C<1>, C<2>, C<3> are supported by suspension members 18 from the top of a metal casing 1<1> having its sides, ends, and bottom perforated to permit circulation of air. Each condenser comprises sheets of metail foil and mica or other insulating material held between clamping members 19 which may be held together by a wire 20 wrapped around the ends. The top of the casing 1<1> has an opening 2 closed by a sheet of insulating material 5<1>, through which pass metal strips 22 forming one terminal of each of the condensers C, C<1>, C<2>, C', the other terminals of the condensers being connected to the casing 1<1> by means of the suspension members 18. The thermo-couple 11<1> is contained within a block, from which leads extend to the ammeter A, a resistance 32 being provided to compensate for the leads to the ammeter. The thermo-couple and resistance are contained in a casing 3<1>. From the thermo-couple extend two leads 24 to a small condenser provided by part of the first condenser C, by making one or more of the sheets of metal foil 25 of greater length. A perforated screen 26 is arranged to shield the connections of the leads 24 to the thermo-couple. One or more of the remaining condensers C<1>, C<2>, C<3> may be connected in parallel with the part of the condenser C in the main circuit for measuring larger currents. Specification 259,533, [Class 37, Electricity, Measuring &c.], is referred to.
Patent GB-935624-A (GB)
Title: A method of manufacturing metallic magnetic materials to be used in high frequency range
IPC: C21D8/12
Filed: 1960-05-06
Abstract: A magnetic material, suitable for use in H.F. apparatus, is made by coating sheet Fe or Fe-Al alloy (containing less than 8% Al) with Al to increase the overall Al content to 10-18%, heating to 650-1350 DEG C. for an appropriate time to provide a homogenous structure and quenching the sheet from 400-650 DEG  C.  The sheet may be rolled before or after the homogenizing anneal and cut to the desired form before the homogenizing anneal or after the quenching step.
Patent GB-199247-A (GB)
Title: Improvements in or relating to rolling-mills
IPC: F16D3/205
Filed: 1922-06-10
Abstract: 199,247. Davy Bros., Ltd., and Hand, T. W. June 10, 1922. Universal joints.-A wobbler and coupling for use in a metal rolling mill comprises collars 12 secured to the ends of the pinion or roll shafts and carrying opposed trunnions fitted with swivel blocks 19 curved as shown and parallel sided to engage corresponding grooves in overhung socket members 21 splined in threads of the wobbler and retained in driving relation by less deeply splined anchor plates 27 held with their spheres out of register with the wobbler splines and in engagement with a circumferential groove 30 by swivel bolts 32 engaging slotted lugs on the anchor plates. The bolts are disengaged and the anchor plates rotated when it is desired to disengage the coupling member. Lubricating cavities are provided on the members 21, closed by screw plugs and communicating by ducts with the working surfaces.
Patent GB-110631-A (GB)
Title: Improvements relating to the Utilization of Waste Oils from Motor Garages.
Inventor: HEYL GEORGE EDWARD
IPC: C10M175/00
Filed: 1916-11-10
Abstract: 110.631. Heyl, G. E. Nov. 10, 1916. Oils, recovering.-Motor spirit, lubricating-oils, &c. are recovered from the waste oils from motor garages bv filtering the waste oils, distilling the filtered oils in the presence of caustic alkali, and collecting the separate fractions.
Patent GB-941175-A (GB)
Title: Improvements in or relating to grinding apparatus
IPC: B23B5/42
Filed: 1962-04-27
Abstract: 941,175. Grinding. E. LINDNER, [trading as H. LINDER, [Firm of]]. April 27, 1962 [April 28, 1961], No. 16266/62. Heading B3D. A relief grinding mechanism for imparting a relief grinding motion to a grinding wheel 3 relative to a workpiece 1, such as a tap, milling cutter or other workpiece, comprises two identical cams 19, 20 disposed beside and offset to each other on a control shaft 18 between opposed roller-levers 23, 24, one of which is connected to the grinding wheel to impart the relief motion thereto, and a rod 36 interconnecting the levers so as to maintain the distance separating the rollers 23a, 24a on the levers constant during rotation of the control cams, one of the roller-levers being mounted on a stationary pivot 25 and the other on a displaceable pivot 26. The grinding-wheel 3 is mounted on a shaft 4 disposed in an eccentric bushing 5. A lever 8 on a clamping ring 7 secured to the bushing is connected by a rod 12 of adjustable length and having universal joints 11 at both ends to one arm 14 of a two-armed lever mounted on a pivot 16. The other arm 15 of the lever is connected by a rod 37 of adjustable length to the lever 23 which is mounted on the stationary pivot 25 and has a roller 23a at one end for engagement with the cam 20 and at its other end is connected by the rod 36, which is of adjustable length, to one end of the lever 24, the other end of the lever having a roller 24a engaging the cam 19. The lever 24 is mounted on an eccentric 26 which has a hollow sleeve 28 located on a fixed pivot 27 and carrying a pinion 29 engaging a rack 30 formed by the extension of the rod 31 of a piston-and-cylinder device 32, 33 or an electromagnet. The arrangement of two levers having rollers engaging both cams ensures that during rapid operation of the machine, the rollers are maintained in contact with the cams to accurately control the rocking motion imparted to the grinding-wheel to grind the relief on the workpiece. During grinding, the workpiece is traversed axially by a motor 101, Fig. 5, connected by a belt 102 and gearing 111 to a lead screw 106, the gearing also being connected by a shaft 204 to the shaft 18 carrying the cams. At the end of a traverse, the grinding wheel is retracted from the workpieee and fluid pressure is supplied to the piston-and-cylinder device 32, 33 to rotate the eccentric 26. The lever first pivots about its end connected to the rod 36 to withdraw the roller 24a from engagement with the cam 19 until it engages a fixed stop 38 about which it then rotates in a clockwise direction, the movement rocking the lever 23 to withdraw the roller 23a from'engagement with the cam 20. The movement of the levers operates a switch which first causes the grinding- wheel to be retracted from the workpiece and then permits the workpiece to be traversed back to its initial position.
Patent GB-203772-A (GB)
Title: Improvements in and relating to the control of dynamo electric machines
IPC: H02P7/34
Filed: 1922-06-12
Abstract: 203,772. British Thomson-Houston Co., Ltd., Given, R. D., and Liddiard, H. W. C. June 12, 1922. Constant speed control systems.-The speed of an electric motor 2 fed by a controllable generator 1 is automatically maintained constant, irrespective of the speed at which the generator is driven, by arranging four exciter machines 3, 4, 5, 6, all of which are coupled to the shaft of the generator 1, so that 5 and 6 differentially excite 4, which excites the motor 2, and 4 and 5 differentially excite 3, which excite the generator 1, the characteristics of the machines being chosen so that a change in the speed of the generator shaft gives rise to a change of opposite sign in the differential excitations, thereby keeping approximately constant voltage applied to the armature and field of the motor 2. To change the motor speed as required, controlling means 8 are inserted in the field circuit of the exciter 3. A flywheel 7 is placed on the generator shaft, and an alternating current motor 9, automatically connected to mains 13 by a relay 12, is used to check the speed of the shaft when the motor 2 regenerates. In a simpler modification, the machine 4 is directly connected to the field of the generator 1, without employing the exciter 3, and the position of the controlling means 8 is correspondingly altered. The invention is intended for rolling- mill and winding motors.
Patent GB-238665-A (GB)
Title: Improvements in artificial limbs
IPC: A61F2/58
Filed: 1924-07-07
Abstract: 238,665. Marks, E. C. R., (Livingston Artificial Limb Co.). July 7, 1924. Limbs, artificial.- An artificial hand is provided with jointed fingers and thumb which are opened and closed by rigid members connecting them to a drum rotatable about an axis perpendicular to the plane of the hand. The drum is rotated in one direction by a spring enclosed in the drum, locking means being provided to hold the fingers in any position. Means for rotating the wrist and bend. ing and locking the arm are also provided. Finger and thumb operating mechanism. Each of the fingers comprises three pivoted sections connected by links, the inner section being provided with a toothed segment 49 which engages a toothed segment 48 mounted on a shaft 50. The shaft 50 has a crank connected by a link to a pin on a drum 60 which can be rotated in one direction by a line 67 and in opposite direction by an enclosed spring 81. The drum and fingers can be held in any position by a detent 74 which engages teeth on the drum but can be released therefrom by a line 76. The thumb is operated by links 84, 86 pivoted to the thumb and to a pin on the drum 60. The fingers and thumb are provided with elastic tips. Wrist rotating mechanism. The wrist is connected to the forearm by a ball-bearing joint 9, a spring 14 holding the wrist normally in one extreme position. The wrist is rotated by a line 21 fastened to the hand at 22 and passing over pulleys 17, 18, 19, a stop being provided to limit the rotation to a quarter turn. Arm bending and locking mechanism. A pull on the line 21 first rotates the hand and then bends the arm. The arm is locked in any position by a pawl 29 which engages teeth on a sector 25 fixed to the forearm. The pawl is released by raising the arm to its extreme position whereupon the pawl 29 engages a cam surface. 28 on the sector causing the pawl to return, when the arm is lowered, along a plain curved face 27 on the sector. Fig. 1 shows the harness to which the various operating lines are attached. The drum operating line 67 passes over a pulley 71 and round the opposite arm of the wearer where it is attached to a strap 66. The line 67 is pulled by an outward movement of the arm. The detent releasing line 76 passes over a pulley 78, under a pulley 79, and over the shoulder as shown at 80, where it is connected to the strap 66. The line 76 is pulled by raising the shoulder. The arm-bending and wrist-rotating line 21 passes over the wearer's shoulder and is connected at 22<a> to a belt 15. An upward movement of the shoulder produces a pull on the line 21.
Patent GB-352662-A (GB)
Title: Improvements relating to advertising signs
IPC: G02B5/128
Filed: 1930-05-27
Abstract: 352,662. Signs. LUBECAWERKE GES., 17, Glashuttenweg, L³beck, Germany. May 27, 1930, No. 16375. Convention date, Feb. 6. [Class 3 (ii).] An advertising sign comprises a background 1 covered with varnish 2, a printed layer 3 upon the varnish, and a protecting lacquer coating 4 upon the printed layer. Glass beads 5 are held by the lacquer coating and form a reflecting surface. The background 1 may be a metal plate, and the lacquer 4 may consist of nitrocellulose.
Patent GB-1245566-A (GB)
Title: Variable density light filter
IPC: G03C1/73
Filed: 1970-04-07
Abstract: 1,245,566. Photochromism. AMERICAN OPTICAL CORP. 7 April, 1970 [10 April, 1969], No. 16406/70. Heading C4S. A variable density light filter comprises a solution of a reversible reducing agent and an U.V. light sensitive photochromic leuco phenazine dye which is a derivative of a phen- | azinium salt. Solvents are polar and include  water, methanol, ethanol, isopropanol and glycerine. Reducing agents are stannous and titanous chloride and Na dithionite. A semi rigid gel is formed by adding acidified Na silicate and this is encapsulated in a thin walled cell of glass or plastics materials. After irradiation the solution thermally recovers its colourless state.
Patent GB-457048-A (GB)
Title: Improvements in compensating mechanism for vehicle brakes
IPC: B60T11/04
Filed: 1935-06-06
Abstract: 457,048. Transmitting-mechanism for brakes. BENDIX, Ltd., and IRVING, J. S., King's Road, Tyseley, Birmingham. June 6, 1935, No. 16411. [Class 103(i)] In equalizing or compensating mechanism for vehicle brakes of the kind in which two brakes or sets of brakes are applied through rods connected to opposed lever arms projecting from a member which is turned by the pedal &c., and is free to swing about one end, the lever arms are carried or formed on one or more members which are rotatable in a bore in the compensator about an axis at right angles to the plane of swing of the compensator to accommodate variations of the angle between the rods and the compensator due to the swing of the compensator. The arrangement may also permit adjustment of the relative lengths of the lever arms to vary the relative leverage. As shown in Figs. 5 and 6, the member a which is adapted to be turned about its longitudinal axis to apply the brakes is free to swing about its upper end in the plane of the paper and the lever arms are formed by a member f which is free to turn in the head g of the member a by being screwed therein. The brake rods extend to the right and left hand respectively from pivots f<1>. By screwing the member f more or less into the head g after detaching the rods, the relative lengths of the arms can be adjusted. The two arms may be permitted independent turning movement with respect to the head by forming one of them as a socket into which the other screws. In another form, the member f may have a plain bearing in the head g and be held against axial movement by a set pin engaging a groove in the member, or there may be a number of grooves to allow of adjustment of the length of the arms.
Patent GB-1055394-A (GB)
Title: Improvements relating to electrical stabilising arrangements
Inventor: SCOLES GRAHAM JOHN
IPC: H02M3/04
Filed: 1964-04-21
Abstract: 1,055,394. Automatic control systems. ASSOCIATED ELECTRICAL INDUSTRIES Ltd. May 14, 1965 [April 21, 1964], No.16488/64. Heading G3R. A stabilizing circuit for controlling a physical or electrical quantity, e. g. the peak amplitude of a pulsed signal, comprises a two-state control apparatus; when in a first state, the apparatus causes the controlled quantity to change towards an optimum level; if the optimum level is reached or exceeded the apparatus is triggered to the second state in which it exerts an opposite effect on the controlled quantity; after a time interval the apparatus is automatically reset to the first state irrespective of the value of the controlled quantity, so that it will then either revert to the second state or remain in the first state depending upon the value of the controlled quantity relative to the optimum level. The control apparatus may be a bi-stable device which is re-set periodically or may be a mono-stable device which resets at a chosen time interval after being triggered. The output from the control apparatus may be applied over an integrating device to the regulating means for the controlled quantity so that overcorrection is prevented.
Patent GB-236229-A (GB)
Title: Improvements in and connected with furnaces and kilns
IPC: F27B9/30
Filed: 1924-02-26
Abstract: 236,229. Lengersdorff, N. Feb. 26, 1923, [Convention date]. Tunnel kilns.-In a tunnel kiln of the kind comprising preliminary heating, burning, and cooling zones, the heat prevailing in the cooling zone is utilized to heat air which is delivered to the preliminary heating zone at a point between two separate outlets for the gases. The invention is described as applied to a kiln constructed according to Specification 211,894. In the preliminary heating zone 15, two groups of outlets 16<a>, 16<b>, Figs. 1 and 1<a>, are arranged on each side of valve-controlled hot-air inlets 17, and the flue 18 connecting each group with the stack 20 is independently regulable. The hot-air inlets communicate with a passage 25, 25<a> in the roof of the kiln, to which air, entering through inlets 24<a>, Fig. 1<d>, and heated in recuperators 24 located in the side walls of the cooling zone, is delivered. Hot air may also be supplied to the inlets 17 direct from the cooling zone.
Patent GB-694470-A (GB)
Title: A process for the manufacture of phosphoric acid and chlorine-containing phosphoric acid esters and salts thereof, and novel compounds obtained thereby
IPC: C07F9/09
Filed: 1951-07-12
Abstract: The invention comprises the 51-phosphoric acid esters of dihydro-riboflavin and of 1-(D - 11 - ribitylamino) - 3,4 - dimethyl - benzene and its 6-arylazo and 6-amino derivatives and their preparation by treating dihydro-riboflavin or a 1-(D-11-ribitylamino)-3,4-dimethyl-benzene or a 6-arylazo derivative thereof with a chlorine-containing phosphoric acid and the product hydrolysed.  The 6 - arylazo component if present in the hydrolysis product may be reduced to a 6-amino group. Riboflavin-51-phosphate may be obtained by (1) reacting dihydro-riboflavin with a chlorine-containing phosphoric acid, hydrolysing the ester so formed and oxidizing the product of the hydrolysis, (2) reacting 1-(D-11-ribitylamino)-3,4-dimethylbenzene with a chlorine-containing phosphoric acid, hydrolysing the product so obtained, diazotizing the 51-phosphoric acid ester produced by said hydrolysis with an aryl diazonium salt to form the 51-phosphoric acid ester of 1 - (D - 11 - ribitylamino) - 3,4 - dimethyl - 6-arylazo-benzene, reducing the latter to the 6-amino ester and reacting this ester with alloxan or alloxantin or a mixture thereof, or alternatively by a similar process using as starting material 1-(D-11-ribitylamino)-3,4-dimethyl - 6 - arylazo - benzene. Specification 681,065 is referred to.
Patent GB-575829-A (GB)
Title: Improvements in or relating to the reactivation of catalysts
IPC: C10G2/00
Filed: 1943-10-11
Abstract: 575,829. Catalysts. SYNTHETIC OILS, Ltd., MYDDLETON, W. W., and AICHER, A. A. Oct. 11, 1943, No. 16607. [Class 1 (i)] Catalysts used in the synthesis of hydrocarbons from carbon monoxide and hydrogen-containing gases are reactivated by treatment with a mixture of hydrogen and the vapour of a wax solvent, the treatment being conducted at a temperature above the condensation point of the solvent. The solvent may be a fraction of the hydrocarbons produced, and may be mixed with the hydrogen by passing the latter through the liquid product.
Patent GB-566079-A (GB)
Title: Improved patterning apparatus
IPC: B05C17/035
Filed: 1943-08-17
Abstract: 566,079. Printing - machines. HEYMANN, B. A. Aug. 17, 1943, No. 16657/44. Divided out of 566,077. [Class 100 (ii)] [Also in Groups III and XX] In a machine for printing or coating walls &c. with distemper, as described in Specification 566,077, a plumb device is provided to ensure that when the printing-roller 4 is moved over a vertical wall it shall not move obliquely. The device comprises a pivoted scale 18 which is pivoted about a horizontal pivot 19 to follow tilting motions of the apparatus, and an indicator needle 15 with a weight 16 at its lower end, and mounted so as to rotate around a pivot 17. The needle thus remains vertical in all positions and indicates on the scale 18 if the apparatus moves out of the vertical direc. tion of travel. Specification 566,080 is referred to.