baber/WOPTO huggingface dataset:
Patent GB-779476-A (GB)
Title: Improvements in or relating to sound reproducing devices and the manufacture thereof
Inventor: EDWARDS HUW BRYANT
IPC: H04R11/06
Filed: 1955-08-17
Abstract: 779,476. Instruments for deaf persons. ERICSSON TELEPHONES, Ltd. Aug. 17, 1955, No. 23653/55. Class 40 (4). In an electromagnetic transducer having an armature 1 spot-welded to a magnetic acoustic diaphragm 2, a non-magnetic bush 4 soldered to the stem of polepiece 3 carries an annular pole-piece 5 to form with the base of pole-piece 3 a spool for the actuating coil and a pair of cheeks between which permanent magnets 6 are housed. An insulated block 8 carrying conductor sockets 7 is fastened into the base of pole-piece 3 and the permanent magnets which are magnetized through their depth terminate on each side of the block. Arcuate permanent magnets are shown but a number of bar magnets or a horse-shoe magnet may alternatively be used. The diaphragm is controlled by a minute hole in the annular pole-piece which connects with the air space around the sockets 7. The use of a jig in connection with the assembly is described and the coil 9 may be insulated from the spool either by the immersion of the spool in varnish before the coil is wound; or by the insulation of the stem and inner faces of the cheeks with waxed paper. The top end of cylindrical cover 10 is spun over the rim of earpiece 11 the centre of which is tapered to carry an ear plug. The instrument is stated to be sufficiently small to fit into the ear and numerous dimensions are given.
Patent GB-406694-A (GB)
Title: Improvements in and relating to electric switches with freehandle automatic release
IPC: H01H83/22
Filed: 1932-08-24
Abstract: 406,694. Electrically - released switches. TRIGGS, W. W., 57, Lincoln's Inn Fields, London.-(Felten & Guilleaume Carlswerk Akt.-Ges. ; M³lheim, Cologne, Germany.) Aug. 24, 1932, No. 23679. [Class 38 (v).] An electric switch with free-handle automatic release comprises a base 1 carrying terminals 2 serving as fixed contacts, a switch plate 5 carrying operating mechanism and a moving contact member constituted by a rotatable insulating member 11 having radially extending contact blades 3, and a cover 6, the assembly being such that the switch mechanism lies between the cover 6 and switch plate 5, whilst interruption of the circuit occurs between the base 1 and switch plate 5. In a modified construction, the space in which the circuit is interrupted is isolated from the lower part of the terminals 2, where external connection is made, by a second plate situated between the plate 5 and base 1. The switch mechanism (Fig. 6) comprises pairs of knuckle-jointed levers 16, 17, and 14, 15 connected at one end by a lever 22 pivoted to the plate 5 at 21 : the link 17 is coupled to a lever 19 fast with the switch spindle 10 and moving contacts, whilst the link 14 is freely pivoted on the spindle 10 and is adapted to be rotated by the handle 18. A two-armed lever 24 is normally locked against the action of a spring 25 by knuckle-jointed levers 26, 27, but when an electromagnet 4 is energized and attracts its armature 30, the levers 26, 27 are brought out of their stretched position so that lever 24 is rotated, and, by means of a projection 32, unlocks levers 16, 17 permitting the lever 19 to be rotated anticlockwise by a spring 20, thereby opening the switch. Simultaneously, levers 14, 15 drop out of their stretched position, so that lever 22 rotates anti-clockwise under the action of a spring 23, thereby restoring levers 16, 17 to their stretched position, so that the switch can be reset by rotating the handle and lever 14. The lever 24 is reset during the above action by engagement of lever 19 with the projection 32. The apparatus is intended for use with domestic and other consuming appliances, the winding 4 being connected between an outer metal cover, or other part of the appliance, and earth, so that the supply is interrupted when the winding is energized through failure of insulation. Momentary contact switches ; spring arrangements.-A testing switch for the circuit breaker comprises a pivoted lever 65 coupled to a pushbutton 67 by a spring 66 so that when the button is depressed and allowed to retract, lever 65 makes contact successively with contacts 62, 63, 57 and then returns into engagement with contact 56. In a modification, the lever is replaced by a barrel having cam projections which operate separate spring blade contacts. Protective arrangements.-The lever 65 is connected with the electromagnet winding 4, and contacts 62, 63 over resistances 61, 60 with the supply mains, so that the winding 4 is temporarily connected with the mains for testing during operation of the switch.
Patent GB-869032-A (GB)
Title: Improvements in or relating to magnetic transducing heads
Inventor: BRIGGS PETER GEORGE
IPC: G11B5/17
Filed: 1957-07-26
Abstract: 869,032. Magnetic recording; reproducing and erazing heads. INTERNATIONAL COMPUTERS & TABULATORS Ltd. May 21, 1958 [July 26, 1957], No. 23739/57. Class 40 (2). A magnetic head is provided with a core divided into two separate flux paths 6, 7 of unequal reluctance, with series-opposition signal windings 8, 9, respectively, coupled therewith and having a turns ratio such that the voltages induced from the transducing gap 3 are substantially equal, and a direct current control winding 11 to saturate one of the flux paths to render the head effective or ineffective at will. In the absence of a control current a small residual voltage appears at terminals 10. As D.C. is increased flux path 7 becomes saturated before path 6 owing to its smaller dimension and the signal flux is transferred to path 6. At a specific value of D.C. the voltages balance in windings 8, 9 and output is a minimum, and when path 7 is completely saturated output is a maximum as no opposing voltage occurs in winding 9. Further increase of control current causes an erazing flux to appear at the transducing gap 3.
Patent GB-1315077-A (GB)
Title: Vehicle records
IPC: G07C7/00
Filed: 1971-04-19
Abstract: 1315077 Recording apparatus KIENZLE APPARATE GmbH 19 April 1971 [5 Feb 1970] 23830/71 Heading G1J Apparatus for recording data relating to the working of a motor vehicle comprises an assembly of record carriers each in the form of a rectangular chart wherein a plurality of charts 10 is present as a coherent tape 12 and in which the charts are so provided that recordings are continuously made on successive charts 10, detaching means 18, 19 automatically separating a chart from the assembly as the recordings thereon are completed. A supply box 9 contains a rolled tape perforated to be driven by a toothed drum 13 under a stylus 2f and between cutting elements 18, 19. The detached charts 10 are stored in sequence and as each is cut off the next is labelled by a print wheel 21, paginator or code puncher. When a box 9 is inserted means 14, 16, 17 co-operate automatically to register the perforations of the tape with the teeth of the drum 13 and arrangements are made to facilitate synchronizing the time graduations of the first chart with the clock. Separate charts 10 may be assembled to form a tape in various ways each necessitating a suitable form of detaching means and the tapes so formed may be rolled or folded concertina fashion. Each chart overlaps the next and may be connected thereto by spots of adhesive, inter-locking slots or by protrusions upstanding from a length of foil passing through holes of one chart registering with holes of the next.
Patent GB-1110520-A (GB)
Title: Arylacetic acid amides
IPC: A61K31/195
Filed: 1965-05-25
Abstract: 1,110,520. Amides. MADAN A.G. 25 May, 1965 [17 March, 1965], No. 23882/67. Divided out of 1,102,867. Heading C2C. Novel compounds of formula wherein R represents C 3-8  alkyl, cycloalkyl, C 4-8  alkoxy, cycloalkyloxy, cycloalkylalkyloxy, alkenyloxy, alkylthio, cycloalkylthio, arylalkyloxy, or arylalkylthio, R<SP>1</SP> represents one or two radicals of the same kind as R being the same or different, or hydrogen, and R<SP>11</SP> and R<SP>111</SP> each represent hydrogen or an alkyl radical, may be prepared (1) when R<SP>11</SP> and R<SP>111</SP> are hydrogen, by reacting an acid chloride with ammonia, or by heating an ester of the acid with an alcoholic solution of ammonia gas or by reacting an ester of the acid with concentrated ammonia, and (2) when R<SP>11</SP> and R<SP>111</SP> are each alkyl or one thereof is hydrogen and the other is alkyl, by reacting an acid chloride with an amine R<SP>11</SP>R<SP>111</SP>NH. The acid amides may be obtained by converting the corresponding acid to its acid chloride using thionyl chloride or phosphorus pentachloride, and reacting the acid chloride with ammonia. They may also be obtained by reacting a suitable acid with ammonium carbonate in the presence of acetic acid or by the Willgerodt reaction starting from a suitable substituted acetophenone. Therapeutic compositions having an antalgic, antipyretic, antiphlogistic, tranquillizing and hypocholesterolemic activity contain as active ingredient a compound of the formula given above.
Patent GB-1087720-A (GB)
Title: Improvements in or relating to the manufacture of thin film
Inventor: PARDOE-MATTHEWS PETER JOHN MIC
IPC: B29C48/92
Filed: 1963-06-14
Abstract: 1,087,720. Making films of uniform thickness. KING PACKAGING Ltd., and P. J. M. PARDOE-MATTHEWS. June 15, 1964 [June 14, 1963], No. 23899/63. Heading B5B. In the manufacture of continuous lengths of flat film sheet by the " trapped bubble " process, in which hot plastic organic polymeric material is extruded through an annular extrusion orifice to form a thin-walled tube which is flattened by being drawn through the nip of a pair of rolls and which is inflated and thereby converted into a tubular film by introducing a gas under pressure into the portion of the tube between the extrusion die and the flattening rolls, the flattened tube being then slit longitudinally, one or more streams of a gas at superatmospheric pressure are directed on to a portion of the exterior surface of the tubular film, for example, as shown in Fig. 2, from a ring of inwardly directed nozzles 25 encircling the tubular film 22 in the zone in which the film is inflated to its maximum diameter. The nozzles 25 communicate with a conduit 26 which in turn communicates with a supply of air maintained at a constant pressure. A branch line 27 leads from the conduit 26 to the controller 28 of an air pressure controlled variable aperture valve 29 in a conduit 24 one end of which communicates with a second supply of air at constant pressure and the other end of which discharges the air into the interior of the tubular film and inflates the tubular film. If the diameter of the tubular film increases so that the wall of the film becomes thinner, the resulting reduction in the distance between the nozzles 25 and the film 22 and consequent increase in the resistance to the discharge of air from the nozzles causes the air pressure at any given point in the conduit to rise and partially close the valve 29. The air pressure in the portion of the conduit 24 between the valve 29 and the inlet to the tubular film will therefore decrease and the wall thickness of the tubular film 22 will increase. Conversely, if the diameter of the film 22 decreases and its wall thickness increases, the air pressure in the conduit 26 will fall, causing the valve 29 to open. The pressure of the air flowing through the conduit 24 into the film 22 will increase and the wall thickness of the film consequently decrease. The variations in the air pressure in the conduit 27 resulting from variations in the wall thickness of the tubular film 22 may be caused to correct the wall thickness of the film by varying the speed of rotation of the rolls which flatten the film and draw it from the extrusion die.
Patent GB-281806-A (GB)
Title: Improvements in apparatus for dispensing beer or other liquids
IPC: B67D1/02
Filed: 1926-09-28
Abstract: 281,806. Gaskell & Chambers, Ltd., and Weightman, J. S. Sept. 28, 1926. Drip, preventing; single-acting bucket pumps; buckets.-In a pump for beer &c. of the kind in which the piston rod 3 is connected to the piston on the suction side for the purpose of preventing drip at the delivery nozzle, the piston 2 carries a bridge provided with a hollow boss 4 into which the end of the piston rod is screwed. The stem 11 of the piston valve 8 passes through the piston and is guided in a recess 12 in the boss. The piston rod is connected to the actuating mechanism 19 by a pair of curved side links 17. Specification 277,918, [Class 135, Valves &c.], is referred to.
Patent GB-1060335-A (GB)
Title: Snow plough
IPC: A01B13/02
Filed: 1965-06-08
Abstract: 1,060,335. Snow ploughs. J. PEITL. June 8, 1965 [June 10, 1964], No. 24184/65. Heading E1G. The clearing edges 3 of a snow plough blade slides between I section intermediate and C section end members 8 and is further guided by top and bottom plates 4 strengthened by sheets 5, 6, 7 welded thereto, the edges 3 being urged to their operative condition by springs 16. The top and bottom plates 4 are welded to ribs 11 welded below the main ribs supporting the share 2.
Patent GB-285398-A (GB)
Title: A cross-line screen, and a process for taking photographic pictures with this screen
IPC: G03F5/10
Filed: 1927-09-15
Abstract: 285,398. Art. Institut O. F³ssli. Feb. 15, 1927, [Convention date]. Photo-mechanical printing-surfaces. - In a cross-line screen the number of lines per unit length in one direction is at least twice the number in the other direction in order that the toned original may be decomposed into parallel lines which vary in thickness but are unbroken even in the highest lights. The screen is used in conjunction with an elongated lens stop, the long axis being parallel to the coarser series of lines. Specification 26012/06 is referred to.
Patent GB-439853-A (GB)
Title: Improvements in or relating to electric overload protective systems and apparatus therefor
IPC: H02H1/00
Filed: 1935-08-30
Abstract: 439,853. Protective cut-out arrangements. SHEPHERD, G. R., 2, Norfolk Street, Strand, London.-(Westinghouse Electric & Manufacturing Co. ; East Pittsburg, U.S.A.) Aug. 30, 1935, No. 24320. [Class 38 (v)] Switchboards.-Overload-protective apparatus comprises in combination, a circuit-interrupter with its tripping means under the control of a light-sensitive cell, and a magnet acting in response to the circuit current to vary the amount of light falling on the cell. The invention is particularly applicable to high-tension, A.C. transmission lines, since the absence of any electrical connection between the low tension trip circuit and the secondary of the current transformer obviates the need for expensive insulation in the latter. Fig. 1 shows the general lay-out in which a housing 8 for a current transformer is mounted on a terminal bushing 3 of the breaker 1, and supports a removable housing 9 for a solenoid, the movement of which in response to excess current moves a mirror so as to cause a beam of light 34 to be reflected in the direction 35 and fall on a light-sensitive device in a casing 10, to produce operation of a trip coil in the case 6. The housing 8, Fig. 7, is connected at 43 to the line conductor 5 and insulated therefrom at 44. The current transformer secondary 39 is connected, when housing 9 is in operative position, over contacts 22 .. 24 and leads 20, 21 to the solenoid 17, the dashpot-controlled plunger 18 of which rotates an arm 32 carrying a mirror 33, Fig. 3. Light from lamp 12 is reflected by the mirror, and on overload falls on the photo-electric device 13, the current of which is amplified at 14 and passed to a relay 37 controlling the trip coil 60. The housing 9 can be removed for adjustment and inspection of its contents, by applying an insulating stick to a hook 30 and lifting pins 28 on the housing 9 clear of brackets 26 on the housing 8. To avoid open-circuiting of 39 when the contacts 22 disengage 23, 24, a T-shaped contact 25, Fig. 3, springs into engagement with the latter, and is moved away therefrom by a projection 29 on the housing 9 when the latter is put back. When used on D.C. circuits, a shunt replaces the current transformer or coil 17 may be in the main circuit. The use of a movable shutter instead of a mirror, the relay 37 acting on the control or grid circuit of a mercury vapour device acting as a main switch, and the mounting of the current transformer and housings 8, 9 upon a separate insulator, are also referred to.
Patent GB-452464-A (GB)
Title: Process of decorating metal articles by electrolysis
IPC: C25D5/50
Filed: 1935-08-30
Abstract: Metal articles are provided with coloured protective films by electroplating with iron nickel or cobalt or other oxidizable metal from an alkaline bath at such voltage and current density as to form a thin deposit of the metal exhibiting successive interference colours, deposition being arrested when the desired colour is presented, preferably, however, after the first cycle of colours. The deposits are subsequently oxidized, e.g. by heating in air, whereby the transparency of the film is increased and the interference colouration enhanced.  A design may be made by stopping off part of the article after a first coating treatment and proceeding with a second treatment before the oxidation. Articles may be finally coated with celluloid varnish.
Patent GB-409972-A (GB)
Title: Improvements in or relating to carriage escapement mechanism for typewriting and like machines
IPC: B41J19/46
Filed: 1933-09-01
Abstract: 409,972. Typewriters. REMINGTON RAND, Inc., 465, Washington Street, Buffalo, New York, U.S.A.-(Assignees of Going, G. G. ; 5, Nash Court, Glenbrook, Connecticut, U.S.A.) Sept. 1, 1933, No. 24333. Convention date, Dec. 1, 1932. [Class 100 (iv).] Letter-spacing mechanism.-To reduce noise, the escapement wheel is supported by means of a slightly resilient member, preferably a sheetmetal bracket, which is firmly connected to the framework and the escapement-wheel bearing. A resilient supporting-bracket may also be provided for the dog rocker. The mechanism shown in the Figure comprises an escapement wheel 6 co-operating with fast and loose dogs 11, 12 on a rocker 10, the loose dog being pivoted on a spring-urged slide mounted in the head of the rocker. The escapement wheel is supported by a bracket 26 having arms 31, 32 which are secured by screws 34, 37 to the framework 35, and a plate 27 which is secured by screws 29 to a depending part 30 of the escapement-wheel bearing 5. The part 30 is out of contact with the framework, and the arms 31, 32 are separated from the framework by washers 33<a>, 36<a>. The rocker is secured by screws 39 to a bracket 38 which has lugs 42 mounted on trunnions 43, and is separated from the rocker by bosses 10<a>, 10<b>. Specification 198,984, [Class 100 (iv)], is referred to.
Patent GB-948657-A (GB)
Title: Improvements in or relating to dock levellers
Inventor: HUNTER DENNIS JAMES
IPC: B65G69/28
Filed: 1961-07-05
Abstract: 948,657. Counterbalanced loading platforms. G. HUNTER (LONDON) Ltd. July 4, 1962 [July 5, 1961; Dec. 1, 1961], Nos. 24345/61 and 43137/61. Heading B8E. [Also in Division E2] A hinged loading platform 2, Fig. 1, is counterbalanced by a weight 28 which acts on the platform through a lever 24, a cam 20 and camfollowerer 22. A lip 16, which rests on a vehicle being loaded, may be either fixed or pivoted to the platform. The platform is locked in the position shown by bolts 48, Fig. 2, which engage in slots 50 and are projected and withdrawn by handles 30. In a first embodiment these handles Fig. 4, rotate a shaft 32 which turns a lever 42, 44 by means of a pin 38. This lever projects and withdraws the bolt by engaging pins 46. In a second embodiment, Fig. 8, the bolt 48 is projected by a spring 60 and withdrawn by a lever 58 which engages a pin 62 on the bolt. The lever 58, Fig. 7, is turned by an abutment 54 when the shaft 32 rotates.
Patent GB-188448-A (GB)
Title: Improvements in or relating to electrically-driven lifting gear
IPC: B66D1/12
Filed: 1921-09-13
Abstract: 188,448. Marks, E. C. R., (Siemens- Schuckertwerke Ges.). Sept. 13, 1921. Alternating-current motors; motors, gearing for.-Comprises the use of epicyclic gearing between an alternating-current induction motor and the load, with the object of allowing the motor to function as a braking generator when the load drives the motor at more than its synchronous speed during gravity lowering. Motors of this type are controlled usually by inserting starting resistances in the circuit of the induced portion, which arrangement prevents the motor functioning satisfactorily as a brake in the manner stated above. In the present construction the resistances are omitted, and the motor is controlled at starting by the gradual release of a brake band 8, Fig. 2, on the winding drum and the gradual application of a brake 11 to the ring 10 of the transmission gear to produce a regulatable amount of slip of the ring. When the drum is freed from the band 8 and the ring is fixed by the band 11, the motor rotates at full lowering speed, and is free to function as a brake when the load overruns and drives it at more than this speed. Fig. 3 shows a modified arrangement of gear which permits the motor to run continuously in the same direction. When the brake bands 8, 14 are loose and the band 11 is tightened, the drum 6 revolves in the same direction as the central driving-shaft, but when the band 14 is tightened and the bands 8, 11 are loose, the planet gear rotates around the pinion 15 and the drum and driving-shaft revolve in opposite directions. Centrifugal masses may be arranged in parallel with the motor and utilised in a known manner to absorb surplus energy when the motor is running under light load, and give up energy when the motor is overloaded, thus preventing the load variations from reacting on the supply circuit.