baber/WOPTO huggingface dataset:
Patent GB-355452-A (GB)
Title: Improvements in lenses for photography and the like
IPC: G02B13/04
Filed: 1930-07-12
Abstract: 355,452. Lenses. LEE. H. W. and KAPELLA, Ltd., 104, Stoughton Street, Leicester. July 12, 1930, Nos. 21149/30 and 8424/31. [Class 97 (i).] Relates to a photographic &c. lens system of the kind comprising a compound collective member B and a compound dispersive member A on the longer conjugate side of the collective member at a considerable distance therefrom, the dispersive member consisting of two elements I, II, one collective and the other dispersive, the dispersive element being between the collective element and the collective member. According to the invention the collective and dispersive members are jointly corrected for distortion, and the members may be so corrected severally. Freedom from distortion in the dispersive member is obtained by constructing this member so that the algebraic sum of the powers of the adjacent surfaces is positive. Numerical data are given for the form shown, having an aperture of f/2 in which the elements I, II are separated by an airspace III in the shape of a dispersive lens, and for another form in which these elements have a common contact surface. The collective member B is of the kind described in Specification 157,040, [Class 97 (i), Optical systems &c.], and is separately corrected for distortion.
Patent GB-847046-A (GB)
Title: Method of balancing v-belt pulleys
Inventor: VILHELM KARL
IPC: F16H55/36
Filed: 1958-07-02
Abstract: 847,046. Balancing driving pulleys. SVENSKA TURBIN AKTIEBOLAGET LJUNGSTROM. July 2, 1958, No. 21182/58. Class 80 (1). After experimentally determining the degree of static out-of-balance of a V-pulley 1, e.g. by mounting it on knife edges and applying magnetic weights, the required amount of material is removed asymmetrically therefrom in order to effect balancing, by forming an eccentric channel 3 in the bottom of one or more of the belt grooves, the required eccentricity being calculated by formula. Eccentric channels of unlike dimensions may be formed at opposite ends of the pulley to facilitate dynamic balancing.
Patent GB-1329797-A (GB)
Title: Catalyst for the perfluorination of perchloro compounds and its preparation and use
IPC: H01L29/00
Filed: 1972-05-05
Abstract: 1329797 Fluorination process RHONEPROGIL 5 May 1972 [6 May 1971] 21193/72 Heading C2C [Also in Division B1] Perfluoro compounds are prepared by the reaction of HF with perchloro compounds at 200-500‹ C. and for 15-20 seconds in the presence of a catalyst prepared by the fluorination with anhydrous HF of the product or mixture of products obtained by calcining organic chromium and organic nickel compounds in the absence of an oxidizing atmosphere. Examples describe the preparation of trifluoroacetic acid by the fluorination of trichloroacetyl chloride followed by hydrolysis and hexafluoroacetone from hexachloroacetone.
Patent GB-532460-A (GB)
Title: Improvements in or relating to ink-feeding roller devices for printing machines
IPC: B41F31/06
Filed: 1939-07-22
Abstract: 532,460. Printing-machines. EMPIRE ALUMINIUM CO., Ltd. (Anders A. Pindstofte's Maskinfabrik Aktieselskabet). July 22, 1939, No. 21339. [Class 100 (ii)] Inking-apparatus.-The printing member 3 of a printing machine is inked by a roller 1 partly immersed in ink 2 contained in a duct 6 and pressed by buoyancy into contact with the member 3. The axle 4 of the roller 1 is guided by slots 5 in the duct 6, so that the roller is free to rise and to rotate in the ink. The roller 1 may be made of wood.
Patent GB-294576-A (GB)
Title: Improvements in apparatus for opening and closing bulkhead doors of vessels
IPC: B63B19/00
Filed: 1928-07-23
Abstract: 294,576. Atlas-Werke Akt.-Ges. July 26, 1927, [Convention date]. Operating doors hydraulically.-The operation of bulkhead doors is controlled by a three-way valve at the central control station and the opening and closing of each door is controlled locally by means of a hand-operated lever, the arrangement comprising a pipe 11 with a permanent supply of pressure fluid that is in constant communication with a four-way valve 14 at each bulkhead door, and with the smaller side of a differential piston 8 controlling the four-way valve, the other side of the differential piston being directly connected, through a control pipe 4, with a three-way valve 3 at the central station. With the parts set for '' doors open," as shown in Fig. 2, pressure fluid from the container 1, pipe 11 and local pipe 10 acts on the smaller side of the differential piston 8, the larger side of thle piston being opened to exhaust through the pipes 6, 4 leading to valve 3, pipe 25 and exhaust tank 24. This sets the local valve 14 as shown so that pressure in the pipes 10, 13 passes through the valve 14 to the pipe 20 and the lower side of the door piston 16, the door 18 being thus raised into the open position. Exhaust from the cylinder 15 passes through the valve 14 and pipe 22 to the container 24. To close a door locally with the valve 3 in the " doors open " position the valve 14 is moved by the handle 26 into the position shown in Fig. 1 and secured by a pin 27. Pressure fluid then passes to the upper side of the cylinder 15 and exhaust fluid escapes through the pipe 19. To close the doors from the control station the valve 3 is moved to place the pipe 2 in communication with the pipe 4 leading to the larger side of the differential piston 8, which rises and turns the valve 14 into the position shown In Fig. 1. By moving a hand lever 26 into the position shown in Fig. 2, a door is opened by a local operation.
Patent GB-482651-A (GB)
Title: Improvements in or relating to knitted fabrics
IPC: D04B1/00
Filed: 1936-08-01
Abstract: 482,651. Knitting. M.B.C. VENDORS, Ltd., BROMLEY, T. C., and SHORTLAND, A. Aug. 1, 1936, No. 21361. [Class 74 (ii)] A plain, rib, or patterned fabric, has across the face thereof unknitted bights or floats 1, Fig. 1, of yarn that is elsewhere formed into stitches or is interknitted, interlooped, bound in the surrounding fabric. Fig. 2 shows a fabric with two yarns B, A knitted alternately and floated at front and rear respectively whilst in a further example the yarn B, when not floated, is knitted with the yarn A at some needle wales and otherwise held at other needle wales. The fabric is produced on a flat or circular machine having one or two needle beds and means for so feeding or acting upon the yarn that, when floats are to be produced, it is located between the backs of the needles and the loops of a previous course. This may be effected by providing a cylinder &c. 19, Fig. 7, with slidably mounted transferring instruments 18-16 which remove and hold loops r away from selected needles during the laying of the pattern yarn B. Alternatively the loops r may be lifted by the butts of latch needles projected into the upper of two superposed cylinders-or by hooks of double ended latch needles with the latches at one end removed. British Specifications 13249/98, [Class 74], and 383,026 and U.S.A. Specification 2,040,965 are referred to.
Patent GB-811354-A (GB)
Title: Improved compacting or closing-in means for articles brought into assembly by a conveyor
Inventor: RAYNOR WARREN SHERRARD
IPC: B65G57/00
Filed: 1955-07-08
Abstract: 811,354. Stacking cartons. MATHEWS CONVEYER CO. Ltd. July 8, 1955, No. 21460/58. Divided out of 811,353. Drawings to Specification. Class 94(1). In a pallet loading machine wherein layers of articles are deposited on a pallet, closing-in guides are arranged at the sides of the pallet with means for advancing the guides to compact and align each layer of articles as it is placed in position and for retracting the guides after the compacting is complete. The subject-matter of this Specification is described in Specification 811,353. Specification 811,355 [Group XXX] also is referred to.
Patent GB-229359-A (GB)
Title: An improved process for extracting or recovering tin from ores or other tin bearing materials
IPC: C22B25/02
Filed: 1923-08-24
Abstract: Ores or the like containing not more than 20 per cent of tin are reduced and chlorinated at 600-800 DEG  C. so as to obtain the tin as a distillate or sublinate of stannous chloride, the iron and other metals not being converted, to chlorides unless an excess of chlorine is used.  The reduction may be effected by heating with anthracite at 600-800 DEG  C., chlorine being admitted after the reduction is affected, or the reduction and chlorination may be effected simultaneously by treating the material at the same temperature with carbon tetrachloride, or, according to the Provisional Specification, with carbonyl chloride, or carbon monoxide together with chlorine or hydrochloric acid.  The reaction chamber may be evacuated or aerated, or the charge may be moistened after the reaction and before the removal of the charge.  Specification 1461/08 is referred to.
Patent GB-1073641-A (GB)
Title: Force measuring system
IPC: H03K7/06
Filed: 1964-05-25
Abstract: 1,073,641. Electric selective signalling. FAIRBANKS MORSE Inc. May 25, 1964 [Feb. 14, 1964], No. 21502/64. Heading G4H. In a weighing machine a D.C. signal proportional to the force is produced by a load cell 10, converted to an A.C. signal by an oscillator 15 with frequency proportional to the applied D.C. signal and re-converted in a feed-back loop 30 to a D.C. voltage which is re-applied at 11 in opposition to the D.C. signal whereby a balance is obtained and a counter 18 measures the frequency of the balanced A.C. signal. The D.C. signal is fed to an electro-mechanical chopper 13 to convert the signal to an A.C. waveform prior to amplification at 12 and then re-application to the chopper 13 for rectification to produce D.C. pulses for amplification and integration in a D.C. operational amplifier 14 to produce a direct voltage to control the sawtooth output frequency of oscillator 15. The frequency of the balanced oscillator is reduced by a frequency divider 17 in accordance with the range of measurement and applied to a binary coded fixed period decimal counter 18 which may be connected to a decoder 19 for a printing readout or application to an adding machine or oscilloscope. The D.C. voltage applied to the load cells 10 and oscillator 15 is kept constant by a transistorized differential amplifier comparing the output voltage with a fixed reference from a Zener diode and compensating for any differences. The oscillator 15 includes a string of temperature compensating diodes maintained at the same temperature as diodes in the frequency to D.C. converter 16.
Patent GB-1222896-A (GB)
Title: A railway flat car
Inventor: GROB LEONARDUS FRANCISCUS ANTO
IPC: B61D45/00
Filed: 1968-05-07
Abstract: 1,222,896. Railway flat cars. ACF INDUSTRIES Inc. 7 May, 1968, No. 21587/68. Heading B7L. [Also in Division E2] A railway flat car 10 which is adapted to support containers C having substantially rectangular bases of various lengths thereon comprises a substantially flat deck 12 which has pairs of slots 24 adjacent each side of the deck 12 and extending longitudinally of the car 10 adjacent pairs of slots 24 being aligned longitudinally of the car 10 and there being an endwise spacing between each pair of slots while container supports 34, Fig. 5, are slidably mounted at spaced intervals in the slots 24A, 24B, 24C by means of projections 62, 66 on guide lugs 61, 64 respectively and tabs 60 on locking lugs 58, Fig. 9, the members 60, 62, 66 engaging via reinforcing strips 56 opposed spaced flanges 30 which define a slot 32 therebetween and adjacent slots are interconnected by cut-out portions 68 which are greater in width than the slots 24, the container supports 34 being mounted so that they may pivot into an inoperable position in which they form closures for the portions 68 and thereby provide supporting surfaces for wheeled vehicles. The container supports 34 may be moved along the slots 24A, 24B, 24C during which movement they are guided by lugs 61 and 64. Each container support 34 comprises a base 36 which defines a horizontal container seat 38 having upwardly extending walls 40 and 41 which provide a pocket for supporting a comer of a container C. An opening 42 in the wall 40 has a slot 46 extending therefrom and receives a rotatable container locking pin 44 which projects into an opening O in the container C. The slot 46 receives a lug 48 secured to the pin 44 when the pin 44 is manually rotated by a handle 50. A projecting tab 52 on the extending end of the pin 44 prevents the removal of pin 44 from the container support 34 when the lug 48 is aligned with the slot 46 and the pin 44 is withdrawn from the opening O in the container C. Road vehicle trailers may be secured on the flat car 10 by means of trailer hitches 74, Fig. 13, on the deck 12.
Patent GB-631990-A (GB)
Title: Improvements relating to electrical measuring instruments
IPC: G01R11/48
Filed: 1947-08-07
Abstract: 631,990. Power - meters. EVERETT, EDGCUMBE, & CO., Ltd., and GRUCHY, J. N. DE. Aug. 7, 1947, No. 21670. [Class 37] To measure EI cos #, a network of linear and non-linear resistances provides a D.C. output proportional to the A.C. current flowing in a circuit and the phase angle of that current relative to the applied voltage (i.e. I cos #) and a resistance is varied so that this output is also proportional to the applied voltage (i.e. EI cos #). As shown, the applied voltage E is fed at VI, V2, to a network R1 ... R5, R9, R10, so that equal and opposite potentials are developed across R3, R4; the current I is applied at 1 to disturb this equality and produce a combined output proportional to I cos #; a resistance R7 shunts the moving coil meter M and is manually adjustable in accordance with the potential at V1, V2 so that the meter reads EI cos #. In a modification, the resistance R7 is responsive to temperature and is heated by a winding in series with a non-linear resistance between V1, V2, Fig. 2, not shown. In a further modification, the resistance R7 is eliminated, and resistances R1, R2 have a falling resistance with increasing current, Fig. 3, not shown.
Patent GB-764910-A (GB)
Title: Improved half hose
IPC: D04B1/26
Filed: 1953-08-06
Abstract: 764,910. Socks. ALLSOP, A. B., DESBOROUGH, L. S. [trading as ALLSOP & CO., A. B.], and WORTH VALLEY (TEXTILES), Ltd. Aug. 4, 1954 [Aug. 6, 1953], No. 21687/53. Class 141. [Also in Group VIII] Knitted half hose has a welt 18 incorporating elastic thread and adapted to fit just below the knee, a circumferentially - continuous non- rib calf part 16, and a ribknitted leg portion 14. As shown the part 14 is ribbed 9/3, the plain part 16 is of substantially constant girth throughout, and the welt 18 is ribbed 1/1 with elastic thread, which may be covered or wrapped, enclosed between oppositely-drawn rib and plain loops of the rib fabric, the whole being knitted on the same number of needles throughout, e.g. on an opposed needle cylinder machine. The general calfbulge shape may be increased by variation of stitch size, or by subsequent boarding. The same yarn may be used throughout, or different yarns (e.g. cotton and wool) for the parts 16, 14, respectively.
Patent GB-417410-A (GB)
Title: Filters for super-heterodyne circuits for wireless reception
IPC: H03D7/18
Filed: 1933-08-03
Abstract: 417,410. Impedance networks. BRITISH ACOUSTIC FILMS, Ltd., 142, Wardour Street, London, and HARRISON, W. H., Devonia, Lake Avenue, Slough, Bucking- hamshire. Aug. 3, 1933, No. 21756. [Class 40 (iii).] A condenser coupling 6 between the input and the grid of the first valve in a super. heterodyne receiver additional to the normal coupling and provided to suppress second channel interference is connected to a low potential point in the aerial circuit obtained by connecting a larger condenser 8 in the earth lead. The ratio between the capacities is preferably large and the capacities may have values of 1000 cm. and 5 cm. The coupling capacity is preferably adjustable.
Patent GB-1341289-A (GB)
Title: Sheet distributing mechanism
IPC: B65H39/11
Filed: 1971-04-19
Abstract: 1341289 Delivering sheets ADDRESSOGRAPH-MULTIGRAPH CORP 19 April 1971 [18 Feb 1970] 21863/71 Heading B8R A plurality of racks such as 11, 12, Fig. 1, each containing a plurality of sheet-receiving trays 14, are arranged along a sheet path. Sheets are fed in succession by conveyers 16, 17, 30 over or into the racks, being sensed by photocells 107, 115, 119, and each sheet is directed into or past a rack by a gate 24 in front of each rack settable in two positions by two electromagnets. A sheet entering a rack is fed downwards by a conveyer 26 past a plurality of tray gates 27, Figs. 1 and 5, one of which is actuated to divert the sheet into a selected tray. Each gate 27 is actuated by a shaft 63 rotated to move it into operative position when a control rod 55 moves into four aligned notches 53, each on the periphery of a disc 52. The notches are aligned in the case of one selected gate by pairs of electromagnets 75a, 75b-78a, 78b, which control the vertical position of wires 70-73 attached to the discs. The gates 24, 27 are set by a programming means in response to the reading of a control tape, the control circuits being illustrated in Figs. 6a, 6b, 7a, 7b (not shown). The arrangement is such that a predetermined number of sheets can be fed into one tray as a result of reading one combination of code signals in the tape.
Patent GB-144155-A (GB)
Title: Improvements in hair waving irons
IPC: A45D1/02
Filed: 1919-09-05
Abstract: 144,155. Nix, A., and Nix, F. I. Sept. 5, 1919. Hair-curling appliances.- In a hair - waving appliance of the type comprising a metal tube adapted to receive a heating-rod, the tube 4, Fig. 1, of aluminium &c. is tapered outwards from the butt 5 so that the hair nearest to the roots may be more closely wound, and is provided with a tape 6 passed through a hole 7 in the butt 5 to secure the hair as shown. The perforated tapered tube shown in Fig. 3 is slipped over the hair after coiling, and the heating-roll 8, Fig. 2, is inserted in the tube 4. The Provisional Specification describes a modification in which the tube 4 contains an electric heating-element with a suitable switch.
Patent GB-423934-A (GB)
Title: Improvements in and relating to drying sludge and the like
IPC: F26B3/20
Filed: 1933-08-04
Abstract: In the drying of sludgy material, e.g. cement slurry before delivery to a rotary kiln, china clay slip, sewage sludge, sludge from water-softening and paint plants &c., by heating balls of metal, stone, &c. coated with the sludge, the balls receive their full complement of sludge <PICT:0423934/III/1> <PICT:0423934/III/2> before being passed through the heating chamber, and the dried coating is removed in a second chamber from which the cleaned balls are returned to the drier.  In the form shown in Fig. 1, a rotary drier 1, heated by hot air or flue gases, is formed internally, near its feed and discharge ends with annular flanges 7, 8, which provide a preliminary coating compartment 1<a> and a discharge compartment 1<b>.  From the latter, the balls with their dried coatings, are delivered to a chamber 10 fitted with a rotary or oscillating screen, the dried material passing to the hopper 11 while the cleaned balls are returned to the compartment 1<a> of the drier by conveyers 12, 13, and a shoot 6.  Screens may be provided at the discharge end of the drier 1 and at intermediate points in its length so that any of the coating which leaves the balls before their delivery to the chamber 10 may be collected separately from the fully dried material.  Fig. 2 shows a modification in which the drying chamber is constituted by a vertical shaft 14 maintained full of balls, the coating being applied either before the balls are delivered to the hopper 21, in the hopper itself, or in the upper part of the shaft by means of nozzles 27. The heating gases are supplied through the hooded conical base 17, while the balls with their dried coatings are discharged through peripheral openings 16 covered by screens consisting of slowly driven endless belts 18. The discharged balls are received in an annular gutter 23 and pass to a screw 24 which conveys them to the separating screen 25, an elevator 26 being provided to return the cleaned balls to the hopper 21.
Patent GB-134118-A (GB)
Title: Improvements in or relating to Adjustable Pulleys.
Inventor: RIDEOUT MARK
IPC: F16H55/54
Filed: 1918-12-31
Abstract: 134,118. Rideout, M., and Rideout, G. Dec. 31, 1918. Expanding pullegs.-A flexible steel or like strip E forming the belt tread engages spiral grooves A', B<1> in pulley cheeks A, B mounted on a bush C, screws D being turned, or equivalent means being used, to tighten the cheeks on the strip edges to secure the strip in position after adjustment. The strip may carry cross-pieces forming the belt tread proper.
Patent GB-690603-A (GB)
Title: Combined pencil holder and stencil
IPC: B43K31/00
Filed: 1951-09-19
Abstract: 690,603. Pencil-box holders; educational-appliances. DUBINER, S. Sept. 19, 1951. No. 21968/51. Classes 146 (ii) and 146 (iii). [Also in Group XVI] A combined pencil holder and stencil for use as a drawing or educational appliance or as a toy consists of a plate moulded from plastic material integral on one side with a yoke member designed to hold a box of pencils on the plate, a plurality of stencil perforations being provided in the parts of the plate not covered by the box of pencils. A disc 1 of plastic material shaped by pressure or injection moulding is moulded with a yoke member 2 to hold a box 4 of pencils, positioning studs 5 being moulded integral with the disc. Stencil perforations 3 are surrounded by raised rims 6 integral with the disc, which rims may be coloured different from the disc for ornamental purposes. The perforations may be formed in two concentric rows representing the alphabet, the inner row in minuscule and the outer in capitals, each letter being associated with an object whose name begins with the letter, and which object may be a stencil perforation, or a picture on the disc, for use in teaching writing.
Patent GB-759912-A (GB)
Title: Improvements in spoon baits
IPC: A01K85/10
Filed: 1953-08-10
Abstract: 759,912. Spoon baits. POOLE, A. Aug. 3, 1954 [Aug. 10, 1953], No. 21980/53. Class 48. In a fishing spoon bait comprising a link 2 formed from a length of wire on which a spoonshaped member 6 is rotatably mounted e.g. to swivel on a bearing knob 7 formed on the wire, one end of the wire being bent back on itself to form an eye 3 and a helical coil 4 being engaged on the parallel lengths of wire 3a, 3b between the eye and the bent outward end 5 of the bent back portion 3a so that it can be screwed beyond the bent out end 5 to leave the eye free to be opened, the said bent end 5 is curled into a pot hook shape for engaging over the helical coil so as to prevent this latter being accidentally forced over the bent out end and furthermore so as to avoid an awkward projection.