baber/WOPTO huggingface dataset:
Patent GB-838875-A (GB)
Title: Improvements in or relating to delivery devices for material
Inventor: JORDISON FRED
IPC: G01N1/04
Filed: 1956-04-14
Abstract: 838,875. Lantern fronts. COAL INDUSTRY (PATENTS) Ltd. April 26, 1957 [April 27, 1956], No. 13031/56. Classes 75(2) and 75(4) A cover of glass or other transparent material for an electric lamp .e.g. a miners cap lamp comprises a clear portion 10 and a frosted or translucent portion 12 so arranged that the filament 14 of the bulb 13 cannot be viewed directly through the clear portion, the portion 12 being concave and arranged on the inner side of the cover so as to extend over and close the tip of the bulb 13. The portion 12 may be integral with the portion 10 or may be a separate piece cemented thereto.
Patent GB-668858-A (GB)
Title: Improvements in and relating to electrical communication systems
Inventor: PARKER LESLIE KEARTON
IPC: H04B3/20
Filed: 1949-04-29
Abstract: 668,858. Two-way transmission. TELEPHONE MANUFACTURING CO., Ltd. April 28, 1950 [April 29, 1949], No. 11442/49. Class 40 (iv). In a two-way electrical communication system a voice-operated switch for conditioning the two paths comprises two thermionic valves V2 and V3 interconnected so that they have only two stable anode current conditions. In Fig. 2, assuming that the equipment is in a condition for transmitting from E-W, the valve V2 would be " out off " and the attenuator 13 would be in a condition to block effectively transmission in the reverse direction. Signals from line 10 are applied by way of a limiter 14 to a triggering circuit 15 and a guard circuit 17. Negative half-cycles are short-circuited through a rectifier M3 and positive half-cycles charge a condenser C2, provided that the potential developed across a resistor R4 in the guard circuit 17a is insufficient to overcome the standing back bias on a rectifier M5. The valve V2 is thus rendered conductive, "cuts off" the valve V3 and makes the point A positive with respect to point B, thus reducing the attenuation of the attenuator 13 in the transmission path and increasing the attenuation of network 13A in the other path.
Patent GB-628892-A (GB)
Title: Improvements in and relating to containers
IPC: A24F15/00
Filed: 1947-04-30
Abstract: 628,892. Time locks. ROBINS, E. T. April 30, 1947, No. 11517. [Class 44] [Also in Group XVII] A container such as a cigarette box has timing means associated with the lock whereby it is automatically locked when closed and unlocked after a desired set period. The container comprises a box 5 having a hinged lid 6 and a clock case 8. The clock has a dial readable from the outside and a mechanism similar to an ordinary "alarm " mechanism, the locking and unlocking being subject to the position of an "alarm" release detent 9. The locking mechanism comprises a controlling lever 16 and a locking lever 17 pivoted at 15 the former lever having an arm 18 provided with a resilient extension 19 co-operating with the detent 9. The controlling lever 16 is spring-loaded in an anticlockwise direction and the locking lever 17 is spring- loaded against a stop 24 on the lever 16. When the lid is closed, the head 26 of the controlling lever engages the surface 30 of the latch 29 and is displaced with the lever 17 in a clockwise direction. The controlling lever is retained in this position by the engagement of the extension 19 over the detent 9, Fig. 4. The catch 28 on the lever 17 is now in a position to engage the notch 33 in the latch 29. When the predetermined time is reached the detent 9 moves to the position 9a, Fig. 4, allowing the lever 16 to move in an anticlockwise direction under the action of spring 22 releasing the catch 28 from the latch. The bell is rung by the extension 19 as the lever moves to the release position. The lid is now retained only by yielding spring catches 26 and 36. The locking mechanism may be rendered inoperative by movement of a lever 42 controlled by a knob 44 which prevents the catch 28 taking up an engaging position. The time for release is set by a knob 10 through gears 11, 12 and 13 and is indicated by the hand 14. When the lid is closed, the knobs 10, 44 are inaccessible under a cover 39 which is apertured to pass the winding head 41. A collar 47 on the winding head, by engagement with the cover 39 prevents alteration of the time indicated by the clock. Specifications 623,325 and 628,893 are referred to.
Patent GB-1254805-A (GB)
Title: Apparatus for dispensing thermoplastic material
IPC: F04B7/00
Filed: 1969-03-04
Abstract: 1,254,805. Syringes. INDUSTRIAL SHOE MACHINERY CORP. March 4, 1969 [March 11, 1968], No. 11527/69. Heading F1R. Apparatus for melting and dispensing thermoplastic material, e. g. polystyrene and polyester thermoplastic cements, comprises a cylinder 11, Fig. 1 for receiving a solid rod 20 or granules of the material, and a base 13 with electrical heaters 21 and 22 and a valve-controlled outlet 14 for the molten material, downward pressure being applied to the solid upper end of the material by a ram 18, or by gripper means 117, 132, Fig. 2, to dispense the molten material. In Fig. 1, ram 18 is operated by a pneumatic cylinder 15, and has a sealing ring 19. A spring-loaded ball valve 31 controls outlet 14 which is connected to a metering pump 34 with an outlet valve 35. In Fig. 2 an externally-controlled shut-off valve 220 is provided in outlet 14. Pneumatic cylinders 115, 130 swing the grippers 117, 132 inwardly to grip rod 120, Fig. 2A (not shown), and apply downward force on the rod. When rod 120 has moved down sufficiently, the pistons of cylinders 115 and 130 are retracted to release the grippers from rod 120, springs 122, 125 lifting the gripper-carrying plate 141 to position the grippers to engage a succeeding rod 1201.
Patent GB-142475-A (GB)
Title: Improvements in tools for setting screw-anchors
IPC: F16B13/08
Filed: 1920-04-27
Abstract: 142,475. Ackerman, C. N., and Johnson, J. L. March 20, 1915, [Convention date]. Screw sockets. - A screw socket is secured in a recess by means of a sleeve of lead &c., which is compressed in the space around the socket by a punch 20 having a central guide stem 24, Fig. 2, and an annular pressure surface 23 to engage the lead sleeve 14. The surface 23 may have small recesses or lettering. Fig. 4 shows a modification in which the stem 24<1> is pushed into a socket 27 against a spring as the punch advances. An enlargement 26 enters the sleeve 14 to prevent the end from spreading inwards.
Patent GB-583102-A (GB)
Title: Improved suction squeegee
IPC: A47L11/30
Filed: 1944-06-20
Abstract: 583,102. Suction squeegees. DIXON & CO., Ltd., R. G., and BRIDGE, W. J. June 20, 1944, No. 11715. [Class 107] [Also in Group XXVIII] A suction squeegee for removing surface water from floors &c. comprises a mobile frame carrying a pump and a tank into which the water is discharged, and a duplex nozzle is provided, one part of which contacts the floor &c. in one direction of travel and the other in the reverse direction. The frame a carries a motor-driven pump b and a tank c arranged between the pump and the nozzle structure; a two-way valve d is provided whereby the pump may produce in the tank either a vacuum, or pressure for discharging the tank through preferably flexible outlet pipe e. The pipe line may have two adapters d<1>,d<2>, to receive a hose with a dustintercepting bay, or a hose to pick up water from places not readily accessible. The duplex nozzle structure f<1>, f<2> is connected to the suction pipe through a flexible joint, and is suspended from the frame by parallel links h which may be controlled by a spring i; stops limit movement of the links h. Between the nozzles is a flexible rubber &c. strip l which contacts the floor &c. and automatically closes the inoperative nozzle. A member such as a lever m may be provided whereby the nozzle structure may be raised from the floor &c. Specification 541,142 is referred to.
Patent GB-118061-A (GB)
IPC: B60D1/28
Abstract: 118,061. Sutton, E. O. Feb. 19, 1918. Couplings for tractors and road cars.-A tractor and trailer are connected by means which exert a downward pressure on the tractor driving- wheels both when the tractor is pulling the trailer and when the trailer is pushing the tractor on braking or going down an incline. The tractor A pulls the trailer B by means of chains 5 attached to the tractor at a point higher than the point of attachment to the trailer. Additional connecting means comprises a two-part rod 8, 10 connected to the tractor and trailer by ball-and-socket joints, the point of connexion with the trailer being higher than that with the tractor.
Patent GB-275333-A (GB)
Title: Improvements in filters
IPC: B01D35/16
Filed: 1926-05-05
Abstract: 275,333. Sweetland, E., J. May 5, 1926. Systems controlling travel for a fixed distance. -A pump of the wet-vacuum type, which is employed to draw filtrate through a filter and to force back liquid and air to clear the filter. is driven by an electric motor which is automatically controlled so as to run a definite distance forward and backward alternately, with intervening pauses. Connections are provided so that current passes in one direction or the other through the armature 36<a> of the motor according as a switch 47 or a switch 47<a> is closed. The switches are closed by solenoids 45<a>, 45b, to which current is supplied by leads 41<a>, 41 respectively, when contact fingers 40 or 40<a> rest on conduction portions of a continuously rotating drum 37.
Patent GB-369436-A (GB)
Title: Improvements in shuttlecocks
IPC: A63B67/18
Filed: 1931-04-22
Abstract: 369,436. Shuttlecocks. ADDIS, F. H., Westbury, Hornyold Road, Malvern, Worcestershire. April 22, 1931, Nos. 11847 and 22762. [Class 132 (iii).] The feathers of a shuttlecock are of uniform shape and have their opposite edges b<1>, b<2> cut in straight lines so that adjacent feathers do not overlap but are separated by narrow spaces d that increase in width in a downward direction. One edge b<1> of each feather is cut in a direction which is radial to the apex of the cone formed by the feathers. The other edge b<2> is cut at a larger angle to the stem and forms part of a quick-pitched spiral generated around the cone. The form of the feathers causes the shuttlecock to spin while in flight.
Patent GB-496545-A (GB)
Title: Process for the production of basic steel in thomas converters
IPC: C21C5/28
Filed: 1937-04-26
Abstract: In the production of basic steel in a Thomas converter, the charge is cooled by the addition of solid cold Siemens-Martin slag as a substitute for a part or the whole of the lime usually used.
Patent GB-295234-A (GB)
Title: Improvements in or relating to apparatus for projectors
IPC: G03B23/12
Filed: 1927-05-04
Abstract: 295,234. Kutassy, A. von. May 4, 1927. Optical-projection apparatus comprises an endless band of transparencies 9 which passes over rollers 10 to form a U-shaped path which is in the plane of and encloses the light beam 6 from the lantern 4, the beam being deflected into V- form by a mirror &c. 5. The images may be focused on a screen 8 in the side of the case 1, or on an external screen. The transparencies 9 are glass or film elements which are connected together by flat or circular eyes 16, and the round or polygonal rollers 10 are grooved to accommodate the eyes.
Patent GB-918194-A (GB)
Title: Transistor chopper
IPC: H03F3/387
Filed: 1961-04-04
Abstract: 918,194. Transistor amplifying circuits. GEVAERT PHOTO - PRODUCTEN N.V. April 4, 1961 [April 6, 1960], No. 11959/61. Class 40 (6). In a low-frequency amplifier of the kind in which the signal is converted to an A.C. signal of higher frequency by means of a chopper, a transistor chopper is used. The input Vi is applied to amplifier WV over series resistor R1, the collector-emitter path of grounded-collector transistor chopper Q1 comprising a shunt across the amplifier input; negative feedback is applied from the rectified output of the amplifier to the input by means of resistor Rc in series with the input. A square-wave switching voltage is applied from transistor multivibrator RG to the base of chopper Q1 via diode Dl which prevents the switching voltage going positive. The offset voltage, i.e. zero error of the chopper Q1 is balanced out by means of a D.C. voltage developed across resistor Rc from source -Vb via a potentiometer network P1, P2, R2 in which R2 comprises a temperaturesensitive resistor which compensates for variation in the offset voltage with temperature. The amplifier WV comprises a number of direct-coupled transistor stages Q2-Q5 in common emitter connection, followed by a direct-coupled emitter-follower Q6, and with both D.C. and A.C. overall negative feedback via network R3, R4, R5, C1. In the interests of stability the cut-off frequency of stage Q6 is made lower than that of stages Q2-5 by means of negative feedback over a condenser connected between collector and base. The amplifier output is applied to a phase-sensitive rectifier FD comprising a piar of transistors Q7, Q8 driven in push-pull from the multivibrator RG and the rectified output is passed to a two-stage direct-coupled output amplifier, transistors Q11, Q12 comprising a pair of emitter-followers in cascade, from which negative feedback is applied to the input via resistor RL.
Patent GB-945506-A (GB)
Title: New steroid compounds and processes for their preparation
IPC: C07J9/00
Filed: 1962-03-28
Abstract: The invention comprises 20,20-bis-hydroxy-methylene -3a - phosphato -5b - pregnan -11- one having the formula: <FORM:0945506/C2/1> (where AC represents either a hydrogen atom or an acyl radical derived either from an organic carboxylic acid having from 1 to 18 carbon atoms or from a mineral acid), their non-toxic water-soluble salts, 3a -diaralkylphosphato -20,20-bis-hydroxymethylene - 5b - pregnan -11- ones and the ketonides thereof and processes for the preparation of the aforesaid compounds in which a lower ketonide of 3a -hydroxy -20,20-bis-hydroxymethylene -5b - pregnan -11- one is reacted with an aralkyl halogenophosphonate to form the corresponding ketonide of 3a -diaralkylphosphato -20,20-bis-hydroxymethylene -5b -pregnan -11- one, the protected 20,20-bis-hydroxymethylene groups of which are then liberated by acid hydrolysis to form the corresponding 3a -diaralkylphosphato -20,20-bis-hydroxymethylene -5b - pregnan -11- one, and the latter is subjected to hydro genolysis to yield 20,20-bis-hydroxymethylene -3a - phosphato -5b -pregnan -11- one. As aralkyl halogenophosphonate there may be used dibenzyl chlorophosphonate while hydrogenolysis may be effected by hydrogenation in the presence of palladium black.  Specification 945,503 is referred to.
Patent GB-436963-A (GB)
Title: Improvements in or relating to dolls
IPC: A63H3/38
Filed: 1934-04-21
Abstract: 436,963. Dolls. BRITISH XYLONITE CO., Ltd., Hale End, London, and SNELL, S. W., Sylvera, High Road, Woodford Green, Essex. April 21, 1934, No. 12037. [Class 132 (iii)] A doll's face comprises a mask D of celluloid, non - inflammable celluloid, or like plastic material having eye-holes in it, a casing B of tubular form of the same material or some similar plastic material as the mask and fused or stuck to the mask by the flange C, and a glass eye A rigidly fixed in the casing B by cement or glue. The flange C causes a slight sinking of the eye which reduces the staring appearance. In a modified construction the eye A may be inserted in the casing B so that it engages the flange C, and a portion of the other end of the casing B may be turned or moulded inwardly so as to engage the back of the eye. The interior surface of the mask may be formed with one or more guides to assist in the accurate positioning of the casing B. When plastic materials are employed which can readily be rendered workable by heating to a temperature which is unlikely to injure the glass eye, the casing may be fused in position by a moulding tool.
Patent GB-527930-A (GB)
Title: Improvements in or relating to bolted electrical connections
IPC: H01R4/34
Filed: 1939-04-22
Abstract: 527,930. Couplings. EMERY, E. F. April 22, 1939, No. 12139. [Class 38 (i)] A bolted connection between two conductors a, b that are coated with insulating material c is made by removing the insulation to form an insular contact area e, interposing a conductive member g, such as a washer with thickened edge, of greater thickness than the insulation c between the conductors, passing a bolt h through holes formed in the contact area, securing the bolt by means of nuts j and enclosing the nuts and bolt ends by insulating caps k. The caps may screw on to the ends h' of the bolt h or the washers i may be enlarged and provided withan upturned edge externally screw-threaded to engage a thread on the skirt of the cap. If the bolt h is the stem of a terminal mounted in a panel or on the end of a cable, the exposed periphery of the terminal may be enclosed by a ring of insulating material fitting against one surface of the conductor through which the stem passes, the cap k screwing down against the other surface.
Patent GB-882157-A (GB)
Title: Improvements in and relating to butadiene monoxide
IPC: C07D303/04
Filed: 1960-04-06
Abstract: A water-soluble carboxylic acid is separated from a mixture with butadiene monoxide by forming a solution of the butadiene monoxide, the acid and an inert water-immiscible organic solvent and washing the solution with an aqueous solution of an inert alkaline earth metal salt.  Suitable salts are, for example, the halides, sulphates, nitrates, phosphates and acetates of magnesium, calcium and barium. Preferably the amount of salt used is at least 30 gms. per litre of solution.  Suitable solvents are, for example, chlorinated hydrocarbons, benzene and toluene, and particularly those which are immiscible with water to the extent of dissolving less than 10 gms. of water per litre, e.g. chloroform, orthodichlorbenzene, diethyl ether, methyl chloride and methylene chloride.  The mixture of carboxylic acid and butadiene monoxide may be obtained by reacting butadiene-1.3 with peracetic acid.
Patent GB-882208-A (GB)
Title: The production of discharge prints on textile materials
IPC: D06P5/15
Filed: 1958-04-16
Abstract: Copper - poly - (5 - or 6 - dimethyl carboxylic acide amide)-isoindolenine (for use in preparing phthalocyanines on the fibre; see Group IV(c)) is prepared by reacting 4-dimethyl carboxylic acid amino-phthalodinitrile with sodium methylate in the presence of ammonia, treating the reaction mixture with copper chloride in methanol and subsequently with more sodium methylate, filtering off the salt and finally treating the filtrate with a mixture of benzene and ligroin.  Specifications 458,166, 476,255, 476,599, 519,123, 705,928 and 788,777 are referred to.ALSO:Textile materials dyed with phthalocyanines containing at least one hydrophilic group which is a sulphonic acid, carboxylic acid, hydroxyl or mercapto group, or a sulphonic acid amide or carboxylic acid amide group, or phthalocyanines containing a nitrogen atom in the aromatic ring system, are printed with a paste containing a reducing agent to yield white discharge effects, or when the paste also contains a vat dyestuff, coloured discharge effects.  The phthalocyanine may be applied to the fibres by pigment-padding.  Alternatively the phthalocyanines may be developed on the fibres from isoindolenines. Numerous dyestuffs are specified.  Specifications 458,166, 476,255, 476,599, 519,123, 705,928 and 788,777 are referred to.
Patent GB-975727-A (GB)
Title: Improvements in and relating to current supply apparatus
IPC: H02J7/22
Filed: 1963-03-28
Abstract: 975,727. Battery charging systems dependent on variable speed generators. ROBERT BOSCH G.m.b.H. March 28, 1963 [March 29, 1962], No. 12230/63. Headings H2B and H2H. In a vehicle supply system, the charge indicator lamp 16 is controlled by a relay 37-39 the coil of which is connected between the star point of a Y-connected 3- phase alternator 17-19 and one end of the battery 12. The relay 38 which may be insulatedly mounted in the generator end shield by means of a bolt 45 has recessed portion 47, forming a magnetic core, with a blind hole 52 supporting a spring 53 urging the armature 49 against a contact 51. The armature slides in a brass bush 48 mounted inside the coil 40 which has a pot-shaped sheet metal housing 42.
Patent GB-675163-A (GB)
Title: Improvements in or relating to vacuum electric discharge tubes
IPC: H01J19/00
Filed: 1947-05-06
Abstract: 675,163. Electrode materials. PHILIPS LAMPS, Ltd. May 6. 1947 [Dec. 14, 1944], No. 12237/47. Class 39 (i). To maintain constant the operation of an electrode emitting secondary electrons, such as the grid of a transmitting valve designed to emit secondary electrons in a one-to-one ratio and so to receive a net current of zero, the electrode has a coating of a mixture of secondary emitting material such as one or both of the oxides of magnesium and beryllium, and a material of good heat-radiating properties such as carbon or black oxides of titanium, molybdenum, zirconium, or tungsten. The heatradiating material ensures the maintenance of the electrode at a low temperature. A mixture of soot and magnesia may be applied to the electrode by means of a suspension. Part of the electrode may be left uncoated, or may be coated only with secondary-emitting material, or only with heat-radiating material.
Patent GB-1348954-A (GB)
Title: Back-up pipe tongs
IPC: B23B47/22
Filed: 1972-03-16
Abstract: 1348954 Plpe tongs BYRON JACKSON Inc 16 March 1972 [16 April 1971] 12259/72 Heading B3N A pipe tong comprises a body, pipe gripping means having jaws adapted to positively converge into gripping engagement with a pipe and to retract therefrom in response to relative rotation between a part of said gripping means and said body, chain sprocket means connected to rotate said part relative to the body, chain means connected with said sprocket means and linear actuator means connected with said chain means and said body for pulling said chain means to rotate said sprocket means. Figs. 1 and 2 show an embodiment wherein a cam 8 is fixed to body 12 with jaws 18 being carried on a ring 10. The jaws are positively moved in and out by followers 22 and 26. Ring 10 is connected to sprocket 34 and is rotated thereby through chain 56. Cylinders 36, 38 control the movement of the chain. When rods 40, 42 are equally distended the jaws are in the fully open position. Opposite movement of the rods causes clockwise or anticlockwise movement of ring 10 to close the jaws on a pipe. The direction of rotation depends on whether the tong is to be used to break out or make up a pipe joint. To ensure that the jaws return to a fully retracted position with push rods 40, 42 equally distended an alternating or shuttle limit stop means 62 is provided. The embodiment of Figs. 9 and 10 is similar except that the ring carrying the jaws is kept stationary and it is the cam 208 that is rotated. There are two chains 256a and 256b. The fully retracted position of the jaws is with rod 240 fully distended and rod 242 fully retracted. Distention of rod 242 and consequent retraction of rod 240 closes the jaws.
Patent GB-300878-A (GB)
Title: Improvements in motor vehicle brakes
IPC: F16D51/00
Filed: 1928-04-27
Abstract: 300,878. Albion Motor Car Co., Ltd., and Watt, J. April 27, 1928. Blocks and shoes acting on drums.-In motor vehicle brakes comprising two pairs of concentric shoes 20, 21 located side by side and operated by cams 18, 19, toggles or the like carried respectively by a tubular spindle 1 and a spindle 5 within the spindle 1, these spindles are journaled independently of one another at both ends. The spindle 1 is mounted in a pair of journals 2 in a bracket 3. The spindle 5 is mounted at its operated end in journal in an extension 12 of the bracket 3 and at its cam end in a journal in an arm in one piece with the ring 8 which houses the oil retaining washer 9 of the wheel hub. A spring pressed washer 14 prevents ingress of foreign matter between the spindles.