baber/WOPTO huggingface dataset:
Patent GB-139772-A (GB)
Title: Improvements in or relating to driving gear for endless track tractors
IPC: B62D11/10
Filed: 1920-03-01
Abstract: 139,772. Muret, L. C. March 1, 1919, [Convention date]. Endless-track vehicles.-According to the Specification as open to inspection under Sect. 91 (3) (a) the frame is resiliently supported upon driving and idler wheels, the idlers being adjustable to tension the tracks, and upon intermediate runners comprising track-engaging rollers mounted at the ends of springs pivoted to the frame. The idler wheels 4 are carried on pivoted arms 6, the free ends of which are connected. by a transverse spring. The frame extensions 8 to which the arms are pivoted are adjustable to tension the tracks by means of screw mechanism. The driving sprockets 15 are loosely mounted on a cross-shaft 16 connected by radius rods 17 and springs 18 to the main frame. The intermediate runners comprise rollers 19 mounted in cheeks 21 connected to the ends of springs 23 pivoted to the main frame. This subject-matter does not appear in the Specification as accepted.
Patent GB-906645-A (GB)
Title: Improvements in or relating to flexible barges
Inventor: HAWTHORNE WILLIAM REDE
IPC: B63B35/28
Filed: 1959-02-23
Abstract: 906,645. Flexible barges. DRACONE DEVELOPMENTS Ltd. Feb. 9, 1960 [Feb. 23, 1959], No. 6184/59. Class 113. A flexible barge has at least one waterdeflecting member at or near the stern thereof. The member, or the centre of the group when more than one member is used, lies where the diameter of the barge is 80% of its maximum. The member may be a continuous ring of circular cross section, or as in Fig. 2, the ring 12 may be of triangular cross-section and attached to the stern 11 of the barge by lashing means 17. The member may comprise a distensible fluid filled core, or a foam rubber or plastics core 35, Fig. 5, the core being held in a fabric jacket 34 secured to the barge 31 at 36 and closed by lacing cords 51. In Fig. 8 the member is made of segments 56 in jackets 57 seated on the strips 52 of the envelope of the barge between the sealing straps 53.
Patent GB-1203872-A (GB)
Title: Camera viewfinder
Inventor: TRANKNER WERNER
IPC: G03B7/099
Filed: 1968-02-08
Abstract: 1,203,872. Reflex cameras; light guides. PENTACON DRESDEN KAMERA-UND KINOWERKE. Feb.8, 1968, No.6248/68. Headings G2A and G2J. A reflex camera has a view-finder prism 4 for directing lights from the camera objective into the eye-piece 5 and a light guide 8 between the prism and eye-piece provided with reflecting surfaces effective to receive stray light from the prism and direct it along light paths I, II and III to at least one photo-electric cell 9. The light paths I, II and m are guided by the surfaces 10, 12 and 14 and 11 and 13. The light guide 8 is preferably as disclosed in Specification 1,167,406.
Patent GB-349468-A (GB)
Title: Improvements in or relating to cartons or packages for fragile articles
IPC: B65D85/32
Filed: 1930-02-25
Abstract: 349,468. Cartons &c. for eggs &c. HOLED-TITE PACKING CORPORATION, 100, East 42nd Street, New York, U.S.A. Feb. 25, 1930, No. 6291. Convention date, Aug. 9, 1929. [Classes 18 and 94 (i).] A holder for fragile articles, adapted to be used either alone or as an internal fitting for a carton, comprises a sheet of material 10 divided by fold lines 15, 16, 17, into strips or sections 11 .. 14, each of which consists of continuously curved depressions 18 and projections 19 merging into one another, and is characterized in that the depression and projections protrude in opposite directions beyond a plane passing through the longitudinal edges of each strip. When the sheet is folded about the fold lines to the form shown in Fig. 4, a plurality of rows of article compartments or cells are formed, by the juxtaposition of the depressions and projections in adjacent rows. The holder, if used alone, may be kept in the set-up position by means of elastic bands, gummed tape or the like. In a modification the depressions and projections extend completely across the sections from one fold line to the next so that the holder is completely free from flat portions. The width of the sections is such that the central hinge and the upper ,edges of the sections extend above the upper limit of the packed article so that shocks or blows from above are borne by the holder and not by the article.
Patent GB-702363-A (GB)
Title: Electrical switch for selectively connecting coaxial transmission lines
IPC: F15B1/027
Filed: 1952-03-11
Abstract: 702,363. Electromagentic switches. HAZELTINE CORPORATION. March 11, 1952 [May 1, 1951], No. 6321/52. Class 38(5) A switch for connecting a high-frequency coaxial transmission line to either of a pair of such lines comprises a conducting chamber with a coaxial connector 28 fixed to its end wall 12 and two similar coaxial connectors 22, 23 fixed to its cylindrical side wall. The outer conductors of all three connectors are thus electrically connected while the inner conductors 30, 26, 27 extend into the chamber. When the parts shown in Fig. 1 are assembled the ends of the inner conductors lie in a V-shaped cavity 17 in a disc 13 and a contact blade 39, which may be rotated by an electromagnet 11 against a return spring 43, rests permanently against the end of the conductor 30 and engages either the conductor 26 or (as shown, Fig. 2) the conductor 27. The shaft 41 may also be rotated by hand to operate the contact blade 39. Specification 611,393, [Group XXXVI], is referred to.
Patent GB-1535566-A (GB)
Title: Method for the preparation of optically pure loweralkyl imidazole carboxylates
IPC: C07D233/90
Filed: 1976-02-18
Abstract: Optically active C1-C3-alkyl esters of 1-(1-phenylethyl)-1H-imidazole-5-carboxylic acid are prepared by reacting racemic 1-(1-phenylethyl)-1H-imidazole-5-carboxylic acid with an optically active isomer of 1-phenylethylamine, 1-(1-naphthyl)ethylamine or 1-(2-naphthyl)ethylamine. The resulting insoluble diastereomeric salt is separated off and treated with a strong non-oxidising mineral acid. The resulting optically active 1-(1-phenylethyl)-1H-imidazole-5-carboxylic acid is then esterified with a C1-C3-alcohol. In another process, the resulting optically active acid is firstly converted into the acid halide and then correspondingly esterified. The prepared compounds can be used as hypnotics.
Patent GB-192305-A (GB)
Title: Improvements in the manufacture of lace
IPC: D04C1/00
Filed: 1922-03-03
Abstract: 192,305. Birkin, C. W., Birkin, H. L., and Coxon, A. March 3, 1922. Braid.-Relates to the manufacture on braiding- machines of filet nets in which each pillar consists of a single thread. Fig. 2 shows part of a net in which each pillar consists of single threads such as e, e<1>, e<2> while the horizontal bars consist, of threads f twisted with portions of the threads e, e<1>, e<2> which traverse in the zigzag course shown. Fig. 3 shows a net composed of pairs of threads f, f<1> twisted together to form horizontal bars and connected together by pillar threads g, each pillar consisting of one thread only. To avoid the bars presenting an uneven appearance, empty spindles may be interposed'. where a pillar crosses a bar. Fig. 5 shows a net. in which each bar is formed of three threads.
Patent GB-1180222-A (GB)
Title: Improvements in and relating to Machines for making Frozen Confections
Inventor: BILLINGHAM ANTONY CECIL
IPC: A23G9/26
Filed: 1966-02-14
Abstract: 1,180,222. Endless conveyers. A. C. BILLINGHAM. 14 Feb., 1967 [14 Feb., 1966,] No. 6369/66. Heading B8A. [Also in Divisions A2 and F4] In a plant for making frozen confections (see Division F4) and having a lower endless conveyer for transporting the moulds and an upper endless conveyer for transporting stick-engaging devices, the upper conveyer is driven in stepwise manner from a shaft 6 which carries an eccentric 21 connected by an arm 22 to a crank 23. The latter reciprocates a rod 24 which rocks a crank 25 connected by an arm 26 to an arm 27. The latter is thus pivoted about the axis 28 of the end sprocket of the upper conveyer and carries a pawl 30 which is spring- loaded against a ratchet wheel 29 driving the sprocket. A dog clutch may be interposed between shaft 6 and crank 23 to prevent the transmission of shocks therebetween. The lower conveyer is also driven in steps from shaft 6 via a cam 7, an indexing wheel 9 and a chain drive 10, Fig. 1. Frozen confections released from the stick-engaging devices carried by the upper conveyer fall on to a discharge conveyer system which comprises a relatively long central belt conveyer flanked by relatively short conveyers (Fig. 6, not shown).
Patent GB-414602-A (GB)
Title: Improvements in cinematographic film printing devices
IPC: G03B27/475
Filed: 1934-02-27
Abstract: 414,602. Photographic projectionprinting apparatus. CHRETIEN, H., 4, Rue Pigache, St. Cloud, Seine-et-Oise, France. Feb. 27, 1934, No. 6379. Convention date, Feb. 27, 1933. [Classes 97 (i) and 98 (i).] Apparatus for continuously printing kinematograph films comprises synchronously driven drums 2, 12 for the films, a collimator 5, reversing system 6, a 90‹ reflector prism 7, a second 90‹ reflecting prism 9 and one or more lenses 11, with or without an anamorphosing device 8. As shown two lenses 10, 11 are shown in order that two copies may be made on the film 13. Any anamorphosing device may be used such as Brewster's prism anamorphoser, or curved generatrix cylindrical lenses such as AbbÚ and Rudolph's device, or such a system as described in Specifications 282,078, [Class 97 (i)], and 356,955. The reversing device instead of being in the position shown may be between the prism 9 and lenses 10, 11. The reversing device may comprise a Wollaston prism, an Amici prism, a set of Porro prisms or a combination of spherical lenses, or the reversal could be obtained by constructing the anamorphosing device of two converging systems of cylindrical lenses, the ratio of the cylindrical focal distances of which is equal to the amount of anamorphosis required. These systems are positioned so that their generatrices are parallel to each other, and the distance between them is such that rays emerging are practically parallel to each other.
Patent GB-692200-A (GB)
Title: Improvements in electric switch fuse mechanism
Inventor: HAYWARD WILLIAM HERBERT
IPC: H01H21/42
Filed: 1950-03-15
Abstract: 692,200. Snap-action switches. DONOVAN ELECTRICAL CO., Ltd. March 14, 1951 [March 15, 1950], No. 6439/50. Class 38 (v) A switch fuse comprises a pair of U-shaped members e pivoted at f to end plates g and pivotally carrying insulated rods d supporting pairs of contact blades a bridged by fuse cartridges (not shown), the blade pairs being separated by barriers c. The side limbs e<SP>1</SP> of the members e have lugs e<SP>2</SP> co-operating with rollers k on the connecting pins j of spring-toggle links h, l, the links I slidably extending through fixed tongues g<SP>2</SP>. Operation of the switch fuse by rotation of a handle n connected by lost-motion to a spindle o moves rollers k to positively engage surfaces e<SP>3</SP> of the lugs until the dead-centre of the toggles is passed whereupon the lost-motion is taken up and the switch is operated with a quick-action the rollers coming to rest on surfaces e4. Operation of the switch fuse when the cover is removed, e.g. by movement of the side limbs e<SP>1</SP> or the rods d, is prevented by the engagement between the rollers k and the lug surfaces e<SP>5</SP>. A known form of interlock may be provided between the switch handle and the cover.
Patent GB-649195-A (GB)
Title: Apparatus for reproducing positions, conditions or states
IPC: G05B19/425
Filed: 1948-03-01
Abstract: 649,195. Electric correspondence control systems. FLECKER, G. C. March 1, 1948, No. 6463. Convention date, March 14, 1947. [Class 40 (i)] [Also in Group XL (c)] In a follow-up system, a variable such as position, temperature, flow, is controlled in accordance with a recorded variable datum by means of the frequency difference between oscillators tuned by the record and the indicator or variable. The oscillator outputs are fed to pulse-shaping circuits (see Group XL (c)), and the duration or amplitude of the resultant pulses is used to control the driving power. The record, which may be a perforated tape, can be preformed according to a desired arrangement, or the recording machine may be controlled by an operation which has to be repeated. Forming a record (Fig. 1). Applied to repeat operations on an engineer's lathe, movement of the cross-carriage 12 with respect to the saddle 11 actuates a tubular capacitor 15 to control the frequency of an oscillator 20<SP>1</SP> whose output is converted to a suitable frequency for operating a recorder 22. Movement of the saddle 11 with respect to the lathe-bed 10 actuates a capacitor 14 to produce a similar record. Reproduction from record (Fig. 2). The power-operated saddle and carriage of the reproducing lathe actuate tubular capacitors 14, 15, to control oscillators 20, 20<SP>1</SP> in the recording operation above. Considering the saddle movement only, the oscillator output is fed to a shaping amplifier 24 to produce rectangular pulses. The output of the record producer 26 is transposed to the original frequency at 28 and shaped at 29 to short rectangular pulses. The two sets of pulses are fed to a mixer giving a characteristic output of increasing or decreasing wave-shape according to whether the indicatorfrequency is faster or slower than the controlfrequency. This wave-form is accentuated at 30 and fed to devices 31, 32 respectively responsive to increasing and decreasing waveshape only to operate the controller for the saddle power drive. The control may be switches, friction clutches, valves, according to the power drive employed. The carriage is similarly controlled.
Patent GB-973479-A (GB)
Title: Improvements in hearing aids
IPC: H04R25/00
Filed: 1963-02-18
Abstract: 973,479. Hearing aids. PHILIPS ELECTRONIC & ASSOCIATED INDUSTRIES Inc. Feb. 18, 1963 [Feb. 21, 1962], No. 6466/63. Heading H4J.  In a heating aid comprising a case 1 adapted to be worn behind the ear and supported by a rigid pipe 19 which serves also to acoustically connect the telephone receiver 3 to an earpiece 21 via a flexible tube 23, the rigid pipe 19 contains a constriction 25 in the half of the pipe remote from the case 1, the diameter of the constriction being less than half the diameter of the tube 19. A second constriction 33 may also be provided in the end of the tube 19 adjacent the case 1.
Patent GB-521686-A (GB)
Title: Improvements in or relating to apparatus for use in weighing materials
IPC: G01G13/00
Filed: 1938-11-22
Abstract: 521,686. Automatic-feed weighers. THOMAS, C. W., and RUDDICK, H. G. Nov. 2, 1938, No. 6479/40. Divided out of 521,642. [Class 143] In an automatic weighing apparatus the material is fed to the weigh pan by upper and lower oscillating trays 3, 4, Fig. 1, supplying the coarse and fine feeds respectively and provided with an intermediate shoot 28 leaving a gap 30 which determines the size or amount of material which can be allowed to pass along the lower tray to the delivery end. The material is introduced into a hopper 26 carried by the upper tray. The shoot 28 is adjustable to regulate the gap 30, and a slide 34 adjusts the size of the entrance to the shoot. In a modification, the gap 30 is regulated by an adjustable wedge 7, Fig. 2. A similar adjustable wedge 7a may be used to control the feed to the upper tray 3. Specification 521,642 is referred to.
Patent GB-420899-A (GB)
Title: Improved means for arresting and collecting dust and fluff from machines or appliances for cutting or slitting paper, cardboard or like light fibrous materials
IPC: B08B15/00
Filed: 1933-03-03
Abstract: 420,899. Circular - saw machines. GROZIER, T. H., 14, Mitchell Street, Greenwich Point, Sydney, Australia. March 3, 1933, No. 6575. Convention date, March 3, 1932. [Class 145 (ii)] [See also Groups XXVIII, VIII, and XVI] The Specification as open to inspection under Sect. 91 describes sawing apparatus comprising a circular-saw 35, Fig. 11 (Cancelled), driven by an electric motor suspended by rods 46 from trolleys 47 running on an elevated rail 48 whereby the saw can be moved over the paper sheets W. A fan is provided on each side of the saw, the saw and fans being enclosed by a casing 38 having air inlets, some of which pass through the motor. The outlet of the casing 38 is connected by a flexible pipe 45 to a dust separating chamber 12. In a modification, a circular-saw 52, Fig. 14 (Cancelled), projects through a slot in the table, a strip 65 of felt preventing the escape of dust. A fan is mounted at each side of the saw, the saw and fans being enclosed by a housing 53 having air inlets. One fan 57 is enclosed in an inner casing 58 having an air inlet 61 and an outlet in the form of a tapered nozzle 64 positioned within the outlet 63 of the housing 53, the outlet 63 being connected to a dust separating chamber. One fan sets up turbulence in the casing 53 and the air jet issuing from the nozzle 64 causes a lowering of pressure within the casing 53. The nozzle 64 may be directed towards the teeth of the saw to remove adhering particles of dust therefrom. This subject-matter does not appear in the Specification as accepted.
Patent GB-1335166-A (GB)
Title: Electrically regenrable electrochemical system
IPC: H01M10/42
Filed: 1972-02-11
Abstract: 1335166 Secondary cells NORTH AMERICAN ROCKWELL CORP 11 Feb 1972 [29 March 1971] 6593/72 Heading H1B A cell capable of repeated cycling at high charge and discharge rates comprises a rotating insulating apertured shutter 24 disposed between a positive electrode 18 and negative electrode 20 immersed in an electrolyte. The alternate covering and exposing of the electrode surfaces by the shutter ensures that during charging uniform and adherent deposits are formed on the electrodes and that during discharge electrode passivation is avoided. As shown, the electrode 18 is nickel oxide, electrode 20 is zinc and the electrolyte is KOH. The shutter 24 is rotated by an electric motor at a constant speed between 20 and 200 rpm., the number of apertures being selected so that the alternate covering and exposing occurs in the range 10-200 cycles per sec. Preferably, the electrode 20 is formed by electrodepositing zinc on a cadmium-plated copper screen. A screen 22 of nylon mesh prevents contact between the shutter 24 and electrode 18. Plastics rings 26, 28 space the shutter from the electrode 20. The positive electrode 18 may alternatively comprise silver oxide, manganese dioxide, mercuric oxide or oxygen. The negative electrode 20 may alternatively comprise lead, iron, cadmium or tin. The electrolyte may incorporate Na 2 SnO 3 .3H 2 O to promote deposition of the zinc and reduce self-discharge. A battery including a number of cells in which the positive and negative electrodes are of bipolar form, is described with reference to Fig. 2 (not shown).
Patent GB-589836-A (GB)
Title: A collapsible adjustable mirror
IPC: A45D42/16
Filed: 1945-03-15
Abstract: 589,836. Collapsable adjustable mirrors. SIMMONS, H. March 15, 1945, No. 6597. [Class 52 (iv)] [Also in Group XVII] An adjustable mirror 1 is mounted upon a lazy tong device 13 secured in a base member 8, the mirror and the member 8 being flanged to form together a case that can be carried in a handbag. The mirror and member 8 are hinged to the ends of the lazy tongs, and the hinged connections 12 are spring-loaded so that the mirror is retained in any desired position.
Patent GB-713983-A (GB)
Title: Improvements in electromagnetic clutches
IPC: F16D27/09
Filed: 1952-03-14
Abstract: 713,983. Positive clutches. SPERRY CORPORATION. March 14, 1952 [March 26, 1951], No. 6661/52. Class 80 (2) An electromagnetic clutch, particularly for servomotor drives in aircraft, comprises a solenoid 52, secured within a gear 48 driven by a pinion 50 and fixed to a shaft 26, and a disc armature 28 adjustably secured in a ring 30 secured at its periphery by a clamp ring 36 and rivets 42 to a spring disc 34 secured at its centre to the driven hollow shaft 22 journalled on the shaft 26, teeth 32 on the ring 30 being engaged with teeth 46 on the gear 48 when the solenoid is energised. The disc 34, through which the drive passes, normally holds the teeth 32, 46 disengaged. The armature 28 is secured in its adjusted position in ring 30 by screws 44. A switch 70 in an external circuit is opened (or closed) as the clutch engages by means of pins 64 and radial fingers 63.
Patent GB-855638-A (GB)
Title: Improved device for adjusting the gain or attenuation of an electric wave
IPC: H04B3/04
Filed: 1959-02-26
Abstract: 855,638. Automatic volume control. COMPAGNIE INDUSTRIELLE DES TELEPHONES. Feb. 26, 1959 [Feb. 28, 1958], No. 6718/59. Drawings to Specification. Class 40 (4). The gain or attenuation to which a signal is subjected is controlled by passing the signal through two modulators directly connected together in cascade, which modulators are fed with carrier voltage from a common fixedfrequency carrier voltage source, a phaseshifting circuit being connected between the source and one of the modulators so as to produce between the carrier voltages supplied to the two modulators a phase difference which depends upon the value of a control voltage applied to the phase-shifting circuit. Two different types of phase-shifting circuit may be employed: the first produces a phase-shift the tangent of which is directly proportional to the control voltage, whereas with the second the tangent is inversely proportional to the control voltage, whereas with the second the tangent is inversely proportional to the control voltage. If the first type is operated to produce a phaseshift # such that tan<SP>-1</SP> # >>1 the voltage transfer factor of the two modulators is inversely proportional to the control voltage, whereas operation of the second type to produce a phase shift # such that tan<SP>-1</SP> #<< 1 gives a voltage transfer factor which is directly proportional to the control voltage. The Specification discusses the conditions under which the arrangement may be used to provide compression, expansion and regulation of the signal and to provide a threshold device. Compression.-By employing the first type of phase-shifter and controlling it by the output voltage of the second modulator the output voltage obtained is proportional to the square root of that of the applied signal. Expansion.-Use of the second type of phaseshifter controlled by the applied signal results in the output voltage being proportional to the square of that of the applied signal. Regulation.-A constant output voltage may be obtained by using the first type of phaseshifter controlled by the applied signal. Threshold device.-The arrangement will give an output voltage only when the applied signal exceeds a predetermined value if the second type of phase shifter is employed and is controlled by the output voltage of the second modulator. Phase-shifters of both types are described in the Specification.