baber/WOPTO huggingface dataset:
Patent GB-408787-A (GB)
Title: Improved photographic objective
IPC: G02B13/00
Filed: 1933-03-02
Abstract: 408,787. Lenses. WARMISHAM, A., 1625, Hinman Avenue, Evanston, Illinois, U.S.A., and KAPELLA, Ltd., 104, Stoughton Street, Leicester. March 2, 1933, Nos. 6316 and 20047. [Class 97 (i).] Relates to objectives of Petzval type com. prising a front convergent compound member and a rear member consisting of a divergent and a convergent component. To improve the flatness of the field and to reduce the over-correction of oblique spherical aberration, the convergent component of the rear member is compounded of three elements, the internal element being collective and of relatively high refractive index and the two outer elements being divergent menisci of lower refractive index, and the contact surface of the front compound member is made divergent and concave towards the longer conjugate. Axial zonal spherical aberration may be reduced by adding in front of the front compound member an air-spaced collective element, as shown, which may be planoconvex but is preferably of meniscus form, and still further improvement may be obtained by placing in front of this additional element a second air-spaced collective element, preferably plano-convex. Data are given for the example shown having an aperture of f /1.3 and corrected for a semi field of 14‹. Specification 258,092, [Class 97 (i)], is referred to.
Patent GB-410292-A (GB)
Title: Improvements in or relating to binoculars
IPC: G02B7/06
Filed: 1933-03-02
Abstract: 410,292. Binoculars. KERSHAW, N., and SOHO, Ltd., 3, Soho Square, London. March 2, 1933, No. 6331. [Class 97 (i).] In binoculars having a hinged body for interocular adjustment, and a focusing screw mechanism actuating a correspondingly hinged bridge or bar carrying the eyepieces, the hinged bridge is totally enclosed by the hinged body of the binoculars. The body comprises two hollow parts 1 pivoted by a sleeve bearing 2 which forms a housing for the focusing screw 3 and nut 4. The two parts of the hinged bridge 5 carrying the cyepieces 10 pass through slots 6 in the sleeve 2 and are rotatably mounted on the nut 4. One of the slots 6 is of such width as to act as a guide for axial movement of the bar 5 passing through it, while the other is of such greater width as will permit the other bar 5 to have the full angular movement of the parts 1 about the sleeve 2. To prevent separation of the parts 1, they are formed with undercut bearing recesses engaged by rings 7 on the sleeve 2. The bar 5 is guided axially by rods 9. The eyepieces 10 telescope through bearing holes in the rear plate 11 of the body.
Patent GB-946858-A (GB)
Title: Improvements in or relating to indicating devices
Inventor: WOODBINE WILFRED JACKSON
IPC: G01R17/02
Filed: 1959-02-24
Abstract: 946,858. Photo-electric control arrangements; bridge circuits. INDICATING DEVICES. May 20,1960 [ Feb. 24, 1959], No. 6373/59. Headings G1A and G1U. A voltage or current measuring device comprises a reversible motor 21, Fig. 1, an indicating member 14 which is rotatable under control of motor 21 over a range of indicating movement which is more than one complete revolution, a variable resistance 24 driven by motor 21 and forming part of a self-balancing bridge network 31, Fig. 2 whose balance output circuit includes the operating winding 12 of a moving coil 10 in series with the voltage or current to be measured, e.g. from a thermocouple 30. The unbalance current from bridge 31 causes winding 12 to rotate relative to main body 11 over a limited range, less than one revolution. A blade 16 mounted on coil spindle 13 is interposed, towards the ends of this range,between a light source 17a or 17b and an associated photo-cell 18a or 18b mounted on body 11. Photo-cells 18a, 18b control respective relays 33, 34 so that when illumination of a photo-cell is interrupted, current is supplied to motor 21 to rotate body 11 in the same directtion as the coil rotation whereby the coil may continue to rotate. A slider 23 of helical potentiometer 24 adjusts bridge 31 towards balance, and when balance is approached, the deflection of coil 12 decreases with respect to body 11, but does not necessarily reach zero,both photo-cells are again illuminated and motor 21 is stopped, pointer 14 then indicating the thermocouple output. In another embodiment, Fig. 3, coil 12 rotates a mirror 38 so that photo-conductive elements 40,41 are unevenly illuminated when bridge 31 is unbalanced. The elements 40, 41 are connected in a further, A.C. supplied, bridge circuit whose unbalance voltage is applied to one phase winding of motor 21 through a phase-shifting capacitor 49 and an amplifier 48. In this case motor 21 drives pointer 14 directly, slider 23 adjusting bridge 31 to balance as before. Application No. 6372/59 and Specification 901, 213 are referred to.
Patent GB-961351-A (GB)
Title: Method for the manufacture of water-soluble leuco-sulphuric acid ester salts of the anthraquinone series
IPC: C09B9/02
Filed: 1962-02-19
Abstract: Water-soluble leuco-sulphuric acid ester salts which, in the form of the free acid, have the formula <FORM:0961351/C4-C5/1> in which each x is hydrogen, chlorine, bromine, fluorine, primary amino or aroylamino and each y is hydrogen, chlorine or bromine and the -NH2 group is in the 1- or 2-position of the anthracene nucleus and in which at least 6 hydrogen atoms are bound directly to the anthracene nucleus and no water-solubilizing groups other than the leuco-sulphuric acid ester groups are present, are made by reacting a leuco ester salt which, in the form of the free acid, has the formula <FORM:0961351/C4-C5/2> wherein x is hydrogen, chlorine, bromine, fluorine, aroylamino or phthalimido and y is as above, while at least partially dissolved in at least one compound of the formula A-OH, where A is hydrogen, methyl, ethyl or propyl, with at least one compound of the general formula R-NH2, where R is hydrogen, -NH2 or an alkyl radical of 1 to 6 carbon atoms, at a temperature below the boiling point of the compound A-OH.  By water-soluble leucosulphuric acid ester salts is meant the salts of sodium, potassium, lithium and triethanolamine. The process may also be effected in the esterification reaction mixture in which the leuco ester salt of the formula II above has been prepared by mixing the esterification mixture with an aqueous solution of sodium carbonate containing the compound of the formula R-NH2. Specifications 247,787, 610,117, 719,621, 749,453, 749,607 and 852,519 are referred to.
Patent GB-1203639-A (GB)
Title: An improved valve structure
IPC: F16K47/00
Filed: 1967-07-28
Abstract: 1,203,639. Fluid-pressure servomotor systems. GRAND VALLEY MACHINE & TOOL CO. July 28, 1967 [March 9, 1967], No.6392/70 Divided out of 1,203,638. Heading G3P. [Also in Division F2]  The subject-matter of this Specification also appears in Specification 1,203,638 but the claims are concerned with the provision on the unloading valve of flanged portions to prevent chatter.
Patent GB-410587-A (GB)
Title: Improvements in and relating to automatic pre-payment mechanism
IPC: G07F15/00
Filed: 1933-03-02
Abstract: 410,587. Prepayment meter mechanism BRITISH THOMSON-HOUSTON CO., Ltd., Crown House, Aldwych, London.-(Assignees of Ferrari, F. ; 24, Welterpfad, Marienfelde, Berlin.) March 2, 1933, No. 6417. Convention date, March 2, 1932. [Class 27.] An electricity meter, a water meter, and/or a steam meter act on a common coin-freeing mechanism, so that the quantity mechanism set forward after insertion of a coin is returned to zero in accordance with the sum of the quantities of commodity or energy taken. An electricity meter E, Fig. 1, and a meter D for warm water drive respectively their consumption indicators 13, 17 and the sun-wheels 14, 18 of a differential mechanism 15, the consequent movement of the planet wheel 19 of which is transferred in known manner to the determining shaft 20 of the coin actuated mechanism 21. The shaft 20 controls a switch 24 which cuts off the supply. The parts shown may be combined to form a single apparatus enclosed by a single casing. In the arrangement shown in Fig. 2, the movements of an electricity meter 10 and a steam meter 11 are integrated by a differential mechanism 15, their combined movement and the movement of a water meter 22 being integrated by a differential 23. The differential 23 may drive the coin actuated mechanism as described before or by means of a contact making wheel driven by the planet wheel as shown may energize periodically an electromagnet which operates a ratchet wheel driving the coin-actuated mechanism. The sun-wheels 14, 18, Fig. 1, may also be driven by similar electrical means.
Patent GB-139024-A (GB)
Title: Improvements in buckles and fastening devices
IPC: A44B11/12
Filed: 1919-03-15
Abstract: 139,024. France, A. G. March 15, 1919. Buckles.-A buckle comprises an outer frame having end bars j, g, and lugs b, in which is pivoted an inner gripping plate or frame c, an attachment bar e being made in the rear portion of the frame c by stamping or pressing an opening, and an additional gripping-edge f being formed by upturning the metal from the opening. The front of the plate is formed with an upturned gripping- edge h; or it may be flat and overlap the bar j.
Patent GB-139797-A (GB)
Title: Improvements in escapements for typewriters
IPC: B41J19/40
Filed: 1920-03-03
Abstract: 139,797. Akt.-Ges. vorm. Seidel & Naumann. July 12, 1918, [Convention date]. Letter-spacing mechanism.-In escapement mechanism of the alternate-detent type, the normally-disengaged detent is provided with a pivoted dog for engaging the escapement wheel when the detent is rocked, and an abutment for holding the dog in engagement; the arrangement prevents the escapement wheel from being obstructed when the carriage is returned. As shown in Fig. 1, the normally-disengaged detent 14 is provided with a pin for releasing the normally-engaged detent 13 from the escapement wheel 10, and a pivoted dog 14<b> for engaging the escapement wheel, a stationary abutment 17 and an abutment 18 on the detent holding the dog in engagement. The detent 14 may be connected to the universalbar mechanism by a link 8, a spring 19 being provided to compensate for variations in the stroke of the universal bar. The Specification as open to inspection under Sect. 91 (3) (a) describes also escapements in which the normally-disengaged detent is provided with a rigid part for engaging the escapement wheel. In the escapement shown in Fig. 2 (Cancelled), the normally-disengaged detent 14 is provided with pin 16 for releasing the normally-engaged detent 13. In the escapement shown in Fig. 7 (Cancelled) both detents 25, 30 are mounted on the same pivot 32, the normally-disengaged detent 25 being actuated by a link 24 and having a pin 31 for releasing the other detent. This subject-matter does not appear in the Specification as accepted.
Patent GB-471207-A (GB)
Title: Improvements in or relating to the manufacture of electrical insulators for thermionic valves and the like
IPC: H01J19/44
Filed: 1936-03-05
Abstract: 471,207. Thermionic valves. M-O VALVE CO., Ltd., and CLAYTON, F. D. March 5, 1936, No. 6714. [Class 39 (i)] [Also in Groups V and XI] An insulator for a thermionic valve or other electrical apparatus comprises a moulded mass of steatite or other material 6 having a re-entrant cavitv 9. A hole is formed for the passage of a wire 8 so that the leakage path between the wire and a metal support 7 holding the insulation will include the space in the re-entrant part 9. Specification 14132 /93, [Class 87], is referred to.
Patent GB-606411-A (GB)
Title: Improvements in and relating to apparatus for and methods of building tyre covers
IPC: B29D30/24
Filed: 1946-03-05
Abstract: 606,411. Pneumatic tyres. DUNLOP RUBBER CO., Ltd., and NORCROSS, T. March 5, 1946, No. 6747. [Class 144 (i)] Tyre components in endless-band form are assembled on a rotary drum 1 having two or more inflatable tubes on its periphery which are expanded to exert consolidating pressure on the superposed tyre materials. In the apparatus shown, a central tube 5 and two side-tubes 6, connected through 3-way valves 13, 10 respectively to a pressure-fluid supply, are seated in the recessed face of the drum. Preferably, a rubber or like expansible band 7 is secured over the tubes. As shown in Fig. 2, a ply-pocket band 17, beads 19 and breaker-strip 18 are laid on the band 7 and the tubes are then slightly inflated to establish a grip between the drum, bands 7 and 17 and breaker-strip 18. The beads 19 are next moved up to positioning- rollers by means of a hand-tool of known type and, after removal of the rollers, the side-tubes 6 are further inflated to consolidate the grip on the beads. The edges of the band 17 are then folded over the beads on which fillers and chafer-strips are next applied and consolidated. The tubes 6 are then deflated for application of the pre-formed tread 22 which is consolidated by further inflation of the tube 5. The tubes 6 may be inflated to provide the necessary resistance during the rolling-down operation on the tread.
Patent GB-140893-A (GB)
Title: Improved processes and apparatus for producing continuous or one piece jointless annular articles, such as solid rubber tires, washers, and like articles formed of a material which is initially in a powdered, comminuted, or granular condition, by moulding under compression and heat into final shape
IPC: B29D30/02
Filed: 1919-03-18
Abstract: 140,893. Offenhauser, F. March 18, 1919. Devuleanizing a n d utilizing waste rubber.- In apparatus for making annular rubber articles, such as solid rubber tyres and washers, by subjecting granular or powdered waste vulcanized rubber in an annular mould, provided with inner and outer heating jackets, to axial pressure and to heat, the waste rubber 24, Fig. 1, is compressed between the plunger 16 and annulus 21 of a press 18, and the temperatures of the jacket 13, 14 are independently regulated from a maximum temperature produced by the circulation of high tem. perature steam to a minimum temperature produced by the circulation of cold water. The article may be similarly secured to a metal base either subsequently or, as shown in Fig. 5, simultaneously. The waste rubber may be fed in to the mould in successive stages, the rubber of ono stage being compressed before the next is fed in.
Patent GB-1419032-A (GB)
Title: Refuse collection vehicle
IPC: B65F3/14
Filed: 1974-02-14
Abstract: 1419032 Refuse vehicle KYOKUTO KAINATSU KOGYO CO Ltd TOYOTA SHATAI KK and TOYOTA JIDOSHA HANBAI KK 14 Feb 1974 [19 Feb 1973] 6769/74 Heading B8E [Also in Division E2] A refuse vehicle 1 has a container 5 detachably mounted on a frame 2 pivotal by a ram P1 and a tailgate hopper 7 pivotally mounted at 9 on a vertical support 6 forming part of the frame 2. The container 5 has a rear door 28 pivotally mounted at 27 to allow the discharge of the contents and a small inlet door 29 slidable in grooves 28<SP>1</SP> thereon. The tailgate 7 has a packer plate 21 which is movable downwards and forwards by rams 23, 26 reaching into the container 5, Fig. 1, to compact the refuse therein. In the lowered position, Fig. 5, the discharge mouth 14<SP>1</SP> of the tailgate is opposite a receiving opening 12 and enters the opening 13 of the container which is sealed by resilient plates 13. Actuation of a ram 10 swings the tailgate up to the position of Fig. 13 withdrawing the ends of arms 34 from studs 30 on the small door 29 allowing it to fall and close the opening 13. The filled container can then be removed from the frame 2 on which it has been locked. A ram P2 engages a hook 7a on the tailgate to hold it engaged with the contaner 5 during loading.
Patent GB-340863-A (GB)
Title: Improvements in casement stays
IPC: E05C17/28
Filed: 1930-03-01
Abstract: 340,863. Casement stays. PARKER, WINDER & ACHURCH, Ltd., and BATES, W. E., Broad Street. Birmingham. March 1, 1930, No. 6813. [Class 65 (i).] In a casement stay of the type pivoted at one end to the window or window-sill and engaging at the other end with the other hinged member, the engaging end of the stay 5 carries a pin 8 which permanently engages with a slot in a plate 9 fixed to the hinged member. Hinged to the plate 9 is a locking-plate 13, having a row of holes or recesses 14, which is arranged so that it cannot be left in the raised position and is therefore always in engagement with the pin or resting on the pin ready to be automatically engaged when the window begins to swing. In a modification, the pin is fixed to the window or window-sill and the slotted plate and locking-plate are carried by the stay.
Patent GB-419284-A (GB)
Title: Improvements in and relating to inductance coils and the like for use in radio-frequency current circuits
IPC: H01F17/04
Filed: 1933-03-07
Abstract: 419,284. High - frequency transformers. ELECTRIC & MUSICAL INDUSTRIES, Ltd., Blyth Road, Hayes, Middlesex, and BLUMLEIN, A. D., 32, Woodville Road, Ealing, London. March 7, 1933, No. 6866. [Class 38 (ii).] A transformer, having a magnetic core composed of magnetic material and insulating material and of such a nature that, at radio frequencies, appreciable dielectric losses tend to be produced in the insulating material due to the electric field of the winding, has an electrostatic shield between the core and the winding in order to reduce these dielectric losses. In the construction shown one limb of a rectangular core 1 of finely divided iron alloy in an insulating matrix is provided with a wrapping 2 of insulating tape over which is arranged an electrostatic shield 3, which may be of sheet copper and be slit at 6. A second wrapping of insulating tape (not shown) may be arranged around the shield 3. A bobbin 4 carrying the winding 5 is arranged on the shielded limb of the core, which may be formed in two parts to facilitate assembly. The shield 3 may be continued over the whole of the core instead of being arranged to shield only those areas of the core which are subject to strong electrostatic fields. The coil may alternatively be of the toroid or shell type. The electrostatic shield may be connected to earth, or its capacity to the coil may be utilized to provide retroaction.
Patent GB-816826-A (GB)
Title: Improvements in or relating to facsimile apparatus
Inventor: HOER KENNETH GEORGE
IPC: H04N1/00
Filed: 1955-06-03
Abstract: 816,826. Copying-telegraph transmitters. CREED & CO. Ltd. June 1, 1956 [June 3, 1955], No. 6866/57. Divided out of 816,824. Drawings to Specification. Class 40 (3). The description is wholly included in Specification 816,824, but the claims relate to a facsimile transmitter apparatus in which sensing means, operative during the feeding of a message sheet to the position in which the scanning action takes place, determines and registers the length of the message sheet, and controls means effective to prevent the transmission of facsimile signals to an outgoing line over the portion of the scanning path not occupied by the actual message sheet, so that signals are transmitted. solely in respect of the portion of the scanning path occupied by the message sheet. In the arrangement described, the message sheet is wrapped around a drum rotated relatively to a scanning head traversed axially of the drum, and the sensing means is effective to determine in relation to the drum's rotation, the angular positions between which facsimile signals, utilized to operate the distant recorder, are suppressed.
Patent GB-201955-A (GB)
Title: Machines for opening cans
IPC: B67B7/46
Filed: 1922-03-08
Abstract: 201,955. Marks, E. C. R., (West Mfg. Co., Inc., P. C.). March 8, 1922. Opening by cutting.-A machine for opening cans comprises adjustable jaws for gripping the can, actuated by the movement of a handle, means for causing rotation of the can on a further movement of the handle, and a cutter and guide free, when adjusted to the height of the can top, to pivot in its bearing and to move in a horizontal plane. A bracket 18, Fig. 2, carries the can-supporting means, and is secured to an upright plate 15, but is readily detachable therefrom. The bracket is bored to receive the hub of a rotatable spider 28 formed with radial arms 38 each having a guideway 39, and superposed on the spider is a plate 34 mounted on a spindle passing through the hub. The plate is formed with arcuate guideways 40 adapted to co-operate with those on the spider to house a corresponding number of L-shaped gripping-jaws 41. The plate carries an internal gear 44 in engagement with a pinion 46 on a short shaft to which is connected the operating-handle 47. The first effect of a movement of the handle in the appropriate direction is to cause relative movement of the plate with respect to the spider thereby causing the jaws to contract and grip the lower end of the can to be operated upon; continued movement of the handle causes the plate and can to revolve. The cutter comprises a knife 64 secured to a support 65, Fig. 8, part of which engages the upper edge and outside of the tin, acting as a guide. The lower part 77 of the heel of the knife is curled inwardly causing the cut cover to be raised at the moment of complete separation and so easily grasped and prevented from falling into the can. The support is mounted on the end of an arm 55, and a spring attached to the arm maintains the knife and support substantially parallel with the arm. The arm is pivoted on a pin 56 between the arms 50<a> of a slide capable of movement relative to a post 49 journaled in bearings attached to the support 15. The upward movement of the bar 55 is limited by stops. Vertical movement of the slide on the post is controlled by a lever 51 having a cam part 53 adapted to bear against and lock the slide to the post when the lever is in the position shown, i.e. when the handle 61, mounted on one of the links connecting the lever to the arm 55, is in the depresed position. To adjust the cutter to a can top, the handle 61 is raised and the slide adjusted until the knife blade is in the required position over the top of the tin; depression of the handle 61 locks the slide and presses the knife into the cover, whereupon turning of the handle 47 revolves the tin and effects the cutting of the cover. Specification 135,208 is referred to.