baber/WOPTO huggingface dataset:
Patent GB-511538-A (GB)
Title: Improvements relating to electrical switching apparatus with arc-suppressing arrangements
IPC: H01H9/54
Filed: 1938-02-21
Abstract: 511,538. Arc-rupturing in switches. MICRO SWITCH CORPORATION. Feb. 21, 1938, No. 5466. Convention date, Feb. 20, 1937. [Class 38 (v)] A switch has electric contacts which during operation provide a pair of gaps connected in series across which a condenser is connected, one of the gaps interrupting a load circuit, while a conducting path through which the condenser charge flows when the switch is operated is connected between the condenser and the junction point between the series connected gaps. This arrangement suppresses any arc and prevents welding together of the contacts. In Fig. 3 a generator 4 supplies a load 5 through a switch having fixed contacts 2, 3 and a contact 1 which to open the circuit moves from contact 2 to contact 3. A condenser 22 is connected between contacts 2, 3 and a conducting path which may include a resistance or gas-filled glow tube 23 is connected between contacts 1 and 3. The switch may be used as a two way switch serving two loads with two series condensers to the common point of which a resistance joins the contact 1. Fig. 1 shows a snap action switch of the type disclosed in Specification 419,917 with a condenser connected between contacts 1, 3 in known manner. The Specification as open to inspection under Sect. 91 describes other circuits which are arrangements of that shown in Fig. 1 with additions including, a resistance in parallel with the condenser, a resistance connected from contact 3 to the connection between generator 4 and load 5 as in Fig. 8 (Cancelled), or a second load. To assist arc suppression a magnetic blowout, one pole 29 of which is shown in Figs. 10, 11 and 12 (Cancelled), could be included in the switch, the direction of the field being such as to blow the arc against a strip 30. Fig. 11 (Cancelled) or rods 30, Fig. 12 (Cancelled) of conducting or insulating material, e.g., copper. A thermal overload tripping device is described with reference to Fig. 13 (Cancelled) which may be included when the connections of Fig. 8 (Cancelled) are used, for upon failure of the condenser insulation, or if the arc is not suppressed, the large current through a resistance 27 then heats and bends a bimetallic strip 37 to release a spring urged bridging member 35 and open contacts 36 and 37. A manual resetting plunger 38 and a pilot lamp 39 are provided. Two pairs of contacts as in Fig. 14 (Cancelled) may be provided, one pair 40, 42 of good conductivity which open first, and the other pair 41, 43 of arcresisting material. Figs. 15, 16 (Cancelled) show another arrangement in which the eccentricity of the actuating member 21 causes the contact pair 40, 42 to open first. The contacts may be formed of or coated with silver. This subjectmatter does not appear in the Specification as accepted.
Patent GB-831386-A (GB)
Title: An improved apparatus for supplying power to a movable carriage
IPC: H02G11/00
Filed: 1957-02-19
Abstract: 831,386. Spring drum apparatus. RUSHWORTH, D. May 15, 1958 [Feb. 19, 1957], No. 5514/57. Class 78 (2). Power is supplied from source 2 to movable carriage 4 by cable (or hose) 1 and slack therein is prevented by attaching the cable to runners 12 running along supporting cables 5, 6, the tension of the latter being sustained by spring drums (or counterweights) 7, 8.
Patent GB-416848-A (GB)
Title: Improvements in or relating to television picture telegraph and the like transmitters
IPC: H04N5/228
Filed: 1933-02-23
Abstract: 416,848. Television transmitters. MARCONI'S WIRELESS TELEGRAPH CO., Ltd., Electra House, Victoria Embankment, DOWSETT, H. M., 47, Drayton Gardens, Winchmore Hill, both in London, and CADZON, R., Ardentinny, Argyllshire. Feb. 23, 1933, No. 5584. [Class 40 (iii).] In television transmitting system in which a cathode ray tube has a photo-electrically sensitive electrode which emits photo-electrons from individual parts in dependence on the degree of illumination of those parts and which is scanned by a cathode beam, the picture to be transmitted is projected through a light permeable anode positioned on the same side of the light-sensitive electrode as the electron gun so that the photo-electrons emitted variably obstruct the scanning ray to provide the picture signals. The object to be transmitted is focused on a photo-electric cathode 2 with which is associated a translucent fine gauze screen 3 forming the light-permeable anode. The scanning cathode ray controlled by plates 6 of which only one pair is shown, passes over the cathode 2 from the different areas of which photo-electrons are liberated in accordance with the degree of illumination of these areas, and obstruct to a varying degree the electrons of the cathode ray passing to the plate 2. These variations cause corresponding changes in the voltage drop across a resistance 15 connected through a condenser 14 to one of the output terminals 12, 13. Electrons returned to the anode 3 pass to earth via resistance 10 and voltage changes set up across this resistance are smoothed out by a condenser 11. In an alternative arrangement, (Fig. 2 not shown) the electrode 2 is connected to the anode 3 through a resistance replacing the resistance 15 connected in series with a portion of the battery 16, the resistance 10 and condenser 11 of Fig. 1 being omitted. A magnetic field may be applied near the photo-electric cathode to ensure that the photo-electrons follow substantially parallel paths and a supplementary meshelectrode may be provided between the electrodes 2, 3 to accelerate the electrons to the anode 3 and thereby to prevent their return to the cathode 2. Specification 394,597 is referred to.
Patent GB-1045841-A (GB)
Title: Carburettor for an internal combustion engine
Inventor: WIEGEL PIETER HENDRIKUS
IPC: F02M1/00
Filed: 1965-02-09
Abstract: 1,045,841. Spray carburetters. PIET WIEGEL N.V. Feb. 9, 1965, No. 5652/65. Heading F1B. A pivoted choke plate 4, spring-loaded to the open position, is held in the closed position by a pivoted locking plate 14 which is connected to the throttle valve operating means so that the plate 14 is moved to free the choke 4 when the throttle valve starts to open. The throttle valve 8 is operated by the inner cable 12, Fig. 4 (not shown) of a Bowden cable the casing 13 of which is connected to, or co-operates with, an arm 16 of the plate 14 whereby when the cable 12 is pulled to open throttle 8, the reaction force in the casing 13 pivots plate 14 to free the choke 4. One of the fastening bolts of the float chamber serves as the throttle idling stop. The choke plate 4 is shaped so that when moved manually to its closed position, the edge thereof first pivots the plate 14 sideways and then permits it to snap back to the locking position.
Patent GB-622910-A (GB)
Title: Improvements in or relating to electrical musical instruments
IPC: G10H5/02
Filed: 1945-03-07
Abstract: 622,910. Electrical musical instruments. COMPTON ORGAN CO., Ltd., J., and BOURN, L. E. A. March 7,1945, No. 5675. [Class 88 (ii)] In an electrical musical instrument in which the speech of generators is controlled by keys and stops the closing of a key contact transmits energy to the generators but this energy is byepassed so as to be ineffective unless a stop is drawn. As applied to an instrument having electrostatic generators, such as of the type described in Specifications 403,444 and 433,050, the potential applied to the generator elements 1, 2, Fig. 1, is that produced across resistance 5 by the current flowing when the key contact 9 is closed.. However, when the stop is inoperative, the stop contact 13 engages contact 14 and short-circuits the resistance 5, but, when the stop is drawn, contact 13 engages contact 15 and the potential applied to the generator is determined by the position of the tapping 16 on the battery 8, The rectifiers 11, 12 prevent interaction between parallel connected key and stop circuits. In a modification, Fig. 2 (not shown), the potential across resistance 5 is applied to the control grid of an amplifying valve instead of directly to the generator. The use of a thermionic valve as a control device for the generator is described in Specification 613,414.
Patent GB-199762-A (GB)
Title: Improvements in head-lights for motor and other vehicles
IPC: B60Q1/14
Filed: 1922-02-27
Abstract: 199,762. Birtwisle, W. Feb. 27, 1922. Vehicle lamps; mounting electric lamps in lantems; lighting, systems of.-A vehicle head-light comprises a metal ring A adapted to fit an ordinary casing M and secured to it by means of a curved metal band D, rivetted to the ring A and provided with a tubular tail piece E, which passes through a central hole in the back of the casing, and a wing-nut F so that the ring A may be adjusted rotatably about the axis of the lamp. A reflector of substantially hemispherical or parabolic shape is cut through to form a front annular part B<1>, the lower portion of which is black and which is fixed to an annular member N fitted in the ring A, and a rear part B<2>, which is pivotally mounted on the member N, so that it can pass inside the upper portion of the fixed annular part, until its edge almost touches an inclined glass front, the upper of the two cuts lying in a plane at or about 60‹ to the horizontal when the rear part is in its normal position. The rear part of the reflector carries a light source, preferably an electric lamp J, provided with a lighting cable L, which passes, together with a control wire G, through the tail piece E, a spring H being provided to return the near part and light source to the normal position. The reflector may be operated by levers, connected to a lever near the driver or on the steering wheel. Two lamps may be adjusted so that, on operating a control lever, one beam of light is deflected downwards and the other sideways or, so that both beams are deflected sideways, simultaneously. In a modification, as shown in Fig. 5, the fixed and movable parts of the reflector are mounted in the annular member N, which is rotatably mounted in an extended casing M by means of the metal band D, tail-piece E and wing-nut F and a part O, forming an extension of the casing M, is fixed to the annular part B<1> of the reflector and carries a frame P for the front glass.
Patent GB-267116-A (GB)
Title: Improvements in weighing scales
IPC: G01G1/00
Filed: 1927-03-01
Abstract: 267,116. Maatschappij tot Vervaardiging van Snijmachines Volgens van Berkel's Patent en van Andere Werktuigen. March 2, 1926, [Convention date]. Scales, links and stays for; pendulum-weight apparatus.-A weighing scale having an indicator and one or more pans with parallel guiding means comprising a check arm for each pan extending upwardly towards the indicator is characterized by a circular member rockably mounted on knifeedges and making rolling contact with, and thereby guiding, the check arm or arms ,and having means connected with the arm or arms for retaining the rockable member on its bearing, the rockable member (where two pans and two arms are provided) being common to both, and being located between, the arms. In the form shown, the scale pans 1 are mounted in the usual manner upon the check arms 5 resting on the ends of the scale beam 2. The indicator 3 and pendulous resistant 20 are carried by a rotatable support 17 and are connected to one check arm by a rod 23. At their upper ends the check arms carry adjustable bearing members 7 of arcuate shape on their working surfaces. Between the bearing members 7, and supported upon the frame by knife-edges, is a rockable member 8 of part-circular shape adapted to make rolling contact with the members 7. The rockable member is prevented from lateral displacement by knife-edges 11,13 and is retained upon its support by a flexible strap 21 located in a groove 24 and resiliently-connected to the check arms 5. Specification 257,286 is referred to.
Patent GB-219279-A (GB)
Title: Improvements in lacing for corsets, belts and the like
IPC: A41F1/04
Filed: 1924-03-05
Abstract: 219,279. Couinaud, A. July 19, 1923, [Convention date]. Corsets and abdominal belts.-Relates to lacing fasteners for corsets, belts and the like of the kind in which a number of laces h, Fig. 2, attached to the edges of one panel of the garment pass through eyelets or the like e provided along the edges of the adjacent panels and are attached respectively to the two parts of a buckle or like tightening-device, such as f. According to the invention, the fastening-devices are arranged under the panels b<1>, c<1> carrying the busk fastenetrs j. Several such fastenings are provided so that independent tightening at different points is possible. The rings or eyes e in which the laces run are attached to the exterior of the panel at the edges to facilitate sliding of the laces. The Specification as open to inspection under Sect. 91 (3) (a) comprises also, Fig. 1 (Cancelled), a construction of corset having two panels, one at the back and the other at the front, drawn together by two fastening-devices f, which, however, are outside the corset. This subject-matter does not appear in the Specification as accepted.
Patent GB-795186-A (GB)
Title: Improvements in and relating to colour photographic processes
IPC: G03C7/26
Filed: 1953-03-02
Abstract: 795,186. Colour photography. FRAUNHOFER, H., VON, and COOTE, H. E. May 28, 1954 [March 2, 1953; April 2, 1953], Nos. 5748/53 and 9215/53. Class 98(2) Negatives are produced by developing and fixing a colour photographic primary material including at least two silver halide emulsion . layers sensitized to different colours, bleaching the image in the outermost layer, applying a take-off material including a metallic sulphide thereto to produce an image in silver sulphide of such outermost image and thereby obliterate the latter, and printing the remaining image or images of the primary material. Couplers are usually included in the layers, particularly in the lower layer or layers. Three examples are each concerned with three layer materials, thus in Example 1 as material of layers (a) blue sensitive with or without yellow coupler (b) yellow filter, (c) green sensitive with magenta coupler, (d) red sensitive with cyan coupler followed by anti-halo and transparent base is exposed, colour developed, acid stopped, fixed, bleached, and contacted with take-off material having a layer prepared from gelatine, cadmium nitrate and sodium sulphide, and which layer has been treated with hypo, to produce the silver sulphide image. The magenta and cyan images of the original material are then printed on to a material of layers (e) green sensitive with magenta coupler, (f) red sensitive with cyan coupler, colloidal silver filter, (g) blue sensitive with yellow coupler and then transparent base through which, finally, the silver sulphide image is printed. This latter material is then reverse developed. Solutions and times of use of such for the operations except for the last, the reverse development procedure, are quoted. If a coupler is present in layer (a) the material may, finally, be printed in the normal manner whilst still permitting use of the process detailed. Other substances than cadmium nitrate for use in making the takeoff layer are quoted. Example 2 describes a negative film of layers (h) blue sensitive, no coupler; yellow filter, (i) red sensitive with coupler; transparent base, and then (j) green sensitive, no coupler; and describes, briefly, procedure therewith involving silver sulphide take-off images from both outermost layers. Example 3 indicates the production of tricolour positive film and three silver sulphide positive records from any commercially available colour negative film by a process which includes use of bleaches of successive penetrating power, each followed by the take-off procedure, for the three emulsion layers. Specification 684,248 is referred to.
Patent GB-730617-A (GB)
Title: Improvements relating to apparatus for maintaining liquids at a constant level in a tank
IPC: G05D9/02
Filed: 1953-03-02
Abstract: 730,617. Regulating liquid levels. FARBENFABRIKEN BAYER AKT.-GES. March 2, 1953 [March 3, 1952], No. 5756/53. Class 123 (1). An apparatus for maintaining a constant level of liquid in a tank comprises a gear pump 2 which feeds the liquid from a supply pipe 1 through feed pipes 3, 7, 11 into the tank 8, the pressure in the feed pipes being held at a constant value by diverting part of the flow through a return by-pass 4, this flow being regulated by a valve 5 which operates in response to pressure variations in pipe 7, a second gear pump 10 being connected to pipe 7 and to the tank at a point corresponding to the desired level 9 therein and being arranged to produce a counterpressure in pipe 7 only when it is imm'ersed in liquid. Thus if the level in the tank falls below level 9, pump 2 supplies liquid until level 9 is restored. At this point pump 10 becomes immersed and a counter-pressure is set up in the feed pipes which causes valve 5 to open, pump 2 then circulating liquid through the by-pass 4 whilst pump 10 circulates liquid back to the tank through by-pass pipe 11. The pump 10 and its by-pass 11 may be replaced by a pump having a screw-shaped or cylindrical impeller which, until it is immersed, allows liquid to pass through the body of the pump into the tank.
Patent GB-194528-A (GB)
Title: Improvements in apparatus to facilitate reading
IPC: G03B23/12
Filed: 1922-02-27
Abstract: 194,528. Fiske, B. A. Feb. 27, 1922. Books with microscopic characters; newspapers. -Magnifying - appliances of the kind for facilitating the reading of microscopic characters printed on a sheet or strip in narrow columns comprise a frame 1 fitted with a plate 4 to hold the strip 7 in position with relation to a magnifying eyepiece 12. The plate 4 is provided with a slot through which the characters are seen. A roller 9 carried by the frame 1 engages the strip 7 and when rotated by the finger brings a fresh portion of the strip into the field of view. The strip is printed in parallel columns with minute characters and is intended as a substitute for books and newspapers.
Patent GB-400484-A (GB)
Title: Improvements in or relating to safety burners for gas-cookers, stoves and the like
IPC: F24C3/12
Filed: 1933-02-25
Abstract: 400,484. Thermally-actuated valves. BOSCH AKT.-GES., R., 4, Militarstrasse, Stuttgart, Germany. Feb. 25, 1933, No. 5795. Convention date, March 16, 1932. [Class 135.] Safety cut-off valves.-A device for auto. matically cutting off the gas supply to gascookers, stoves and the like by means of a thermostat on extinction of the burner flame, has the burner head formed as the thermostat. The thermostat comprises a hood having a cylindrical part 18, an annular part having double conical faces 21, 22, and an undulated cap 20. An initially-stressed star or crossshaped spring 23 bears on the spindle of the automatically controlled valve 9 through the intermediary of a loose pin 24. The valve 9 is urged upwardly by a spring 10 positioned with the valve spindle in an extension 11 of the valve casing 5, on a shoulder 12 of which the burner top 7 rests. Gas from an inlet 2 passes via passages 25, 26 in a plug cock 4 past a filter 28 and the valve 9 to a nozzle 29, where it mixes with air entering by the space between the burner top 7 and a protective sleeve 8. The mixture ascends through an opening 13 and passes through a central opening in an inner hood 15 to the burner openings 17. Flames heat the conical part 22, causing the hood-to expand so that spring 23 relaxes and pushes the valve 9 open. Igniting gas by-passing the valve 9 is supplied to the openings 17 by withdrawing the plug 4 so that a stop 33 contacts a closure screw 34 and the passage 26 is opposite a passage 30 leading to a by-passing groove 31. The small flames or the cool bases of the large ones contacting the part 22 are sufficient to operate the thermostat. Unburnt gas sweeping under the cap 20 quickly cools the thermostat so that the spring 23 is stressed and the valve 9 closes when the flames are extinguished. A second hole 13<1> receives a guide pin 14 also mounted in the casing 5. A layer of insulating material is inserted between the parts 7, 18, and the burner top has recesses 35 so that there is substantially line contact with the part 18. Liquid overflowing during cooking operations is prevented from entering the openings 17 and the sleeve 8 respectively by the projecting part 21, and a projecting part on the burner top 7. Burner openings may also be provided in the cap 20.
Patent GB-243590-A (GB)
IPC: B41J13/042
Filed: 1925-03-03
Abstract: 243,590. Royal Typewriter Co., Inc., (Assignees of Hess, E. B., and Myers, L. C.). Jan. 29, 1925, [Convention date]. Sheet feeding and guiding arrangements.-In machines having a platen carriage provided with a base, the paper-feed devices are ent'rely and directly supported independently of the carriage end plates by two upstanding brackets carried by the base and positioned fore and aft of the carriage, one near each end of the platen. The feed-roller release is actuated by a gear wheel meshing with a sector on a hand-lever. As shown in Figs. 1 and 2, the brackets 1 secured by rivets 2 or other means to the base A, have upwardly and rearwardly extending portions 3 provided with inwardly projecting arms 4 bent to form pivotal supports for arms 5 supporting the ends of the rear feedroller shaft. The front portions of the brackets are bent up at right angles to form ears 12 on which studs 13 are mounted to form pivots for arms 14 supporting the ends of a shaft 16 carrying the front feed-rollers 17. The rear arms 5 have cut-out portions 6 to receive the ends of the rear feed-roller shaft 6<1>, and rearward extensions 7 on the arms 5 are connected to extensions 10 on the brackets 1 by springs 8 which normally hold the rear roller 11 in contact with the platen. The front rollers 17 are spaced to enable the tongue of the paper-apron 39 to pass between them, and are normally held against the platen by springs 18 on the studs 13. The front feedroller supporting arms 14 and the rear feed-roller supporting arms 5 are respectively provided with downward extensions 29, 26 which project through a cut-out portion 19 of the base plate A and cooperate with cam surfaces 30, 27. Fig. 3, cut in grooves in a roller or cam member 23, which is secured on a shaft 21 extending longitudinally beneath the base plate. The shaft 21 is supported in downturned lugs on the brackets 1 and a lug on the right-hand carriage end-plate D, and is provided at its end with a toothed gear member 31, Fig. 2, which is engaged bv a sector 34 at the end of a lever 32 pivoted at 33 to the end plate D. The rearward movement of the lever 32 to release the feed-rollers is limited by a flat part 35 on the sector abutting against a corresponding part 36 on the gear member 31. A paper-table 38. Fig. 3 which is continuous with the paperapron 39 is secured to the brackets 1 at 37, and has cut out portions to enable the feed-rollers to pass there through. An overhead bail member comprises rollers O on a shaft N supported by side arms M. Platen and carriage scales.-The paper-table is provided with a scale 40, Fig. 3, attached thereto, or the rear edge of the table may be graduated. A front scale 41, Fig. 2, carried bv arms 42 pivoted to the carriage end plates D is pressed against the platen F by springs 44.
Patent GB-362778-A (GB)
Title: Improvements in or relating to pipe lighters
IPC: F23Q2/02
Filed: 1931-02-25
Abstract: 362,778. Pipe lighters ; blowpipes. LEMOINE, H. G., 1A, Buissonniere; Perrierssur-Andelle, Eure, France. Feb. 25, 1931, No. 5939. Convention date, March 8, 1930. [Classes 75 (i) and 75 (iii).] In a pyrophoric igniter, a nozzle 21 is placed at the centre of the outer end of the wick 10 and connected with an air pump in the casing 1, so that, on operating the pump, the flame is extended in the direction of the issuing air jet. In the form shown, the p u m p comprises a cylinder 2 with a loose piston 5 normally pressed by a spring 6 against a shoulder 7. The cylinder communicates through a tube 11, a member 13 and lateral openings 20 in a screw 16 with the nozzle 21 at the end of the screw.