baber/WOPTO huggingface dataset:
Patent GB-335719-A (GB)
Title: Paper feeding mechanism for typewriters
IPC: B41J11/30
Filed: 1929-09-10
Abstract: 335,719. Triggs, W. W., (Elliott-Fisher Co.). Sept. 10, 1929. Paper-supports; sheet clamping, feeding, and guiding arrangements; line-spacing mechanism. - In machines having a depressible flatplaten, a paper feeding device, for instance an endless band carrying a condensed-record sheet, is operated by the platen. The platen 1, Figs. 3 and 4, is arranged within frame members 3, 4 provided with rails 5 supporting the line-spacing carriage, the platen being supported by spring- urged bell-cranks 13 and being connected to rocking arms 6, 7 which are operated by a pedal to depress the platen. An endless band 14 provided with studs 15 passes over the right-hand edge of the platen and runs on front and rear rollers on the member 3. Adjacent to the rear roller 19 is a pinion 37 which engages the studs and is connected by a shaft 36 to a ratchet-wheel 35 co-operating with a pawl 30 on a spring-urged lever 25 having a roller 28 engaging the platen. A pin 32 normally holds the pawl. The front roller is provided with a knob for moving the band. A bill is clamped between the platen and the left-hand rail 5, and an underlying condensed-record sheet is connected by marginal perforations to the studs. After the bill has been typed, the platen is depressed and the ledger-sheet is automatically line-spaced by the endless band. The righthand rail 5 has a hinged section 5<a> for holding down the record sheet. The section is spring- urged and is raised by means of a finger-piece to permit removal of the record sheet. The right-hand rail is provided with a pin for positioning the bills
Patent GB-1352300-A (GB)
Title: Production of hexaorganodistannanes
IPC: C07F7/22
Filed: 1972-06-13
Abstract: 1352300 Preparing hexaorganodistannanes M & T INTERNATIONAL NV 13 June 1972 [18 June 1971] 27623/72 Heading C2J Hexaorganodistannanes of formula R 3 Sn- SnR3 where R is a C 2 -C 12  alkyl radical are prepared by reacting in the liquid state a trialkyltin halide R 3 SnX with molten sodium metal in the absence of a solvent or diluent. The sodium is usually added to the halide in two portions, the mixture being heated after the first addition to at least the melting point of sodium (97À5 C.) and preferably to 170-180 C. After cooling to ambient temperature, the second portion is added and the mixture again heated. The yield of product may be increased by washing the sodium halide by-product with cyclohexane. In the examples, the hexapropyl, hexabutyl and hexahexyl compounds are prepared.
Patent GB-188499-A (GB)
Title: An improved lubricating device
IPC: F16N7/24
Filed: 1921-10-18
Abstract: 188,499. Templeton, J. M., Coulthard, H., McLaren, P., and Elliott, J. Oct. 18, 1921. Lubricant conveyed by mechanical means.- A lubricating device for journal -boxes comprises a roller D mounted in a stirrup C, to the open end of which is secured a pin B on which is nivoted a bolt A secured in one side cf the box, the other end of the stirrup being attached to a coiled spring E attached to a second bolt F secured in the opposite side of the box.
Patent GB-479311-A (GB)
Title: Improvements in regenerative heat exchangers
IPC: F28D19/04
Filed: 1936-10-12
Abstract: 479,311. Rotary regenerators. AKTIEBOLAGET LJUNGSTROMS ANGTURBIN. Oct. 12, 1936, No. 27670. Convention date, Jan. 23. [Class 51 (i)] In a regenerator comprising a stationary cylindrical casing 13 provided at both ends with head plates having openings for the flow of the media between which heat exchange is to be effected, a rotor 1 containing heat exchange material 4 and sealing means arranged between the rotor and head plates, the head plates 16, 18, 17, 19 are rigidly connected near their centres to rings 20<1>, 21<1> surrounding the shaft 6 of the rotor and at their peripheries have a sliding connection with the cylindrical wall of the casing to permit free radial expansion. Fig. 2 shows the plate 16 secured by rivets 17a to the plate 18 and pressed against the flange 14 of the casing 3 by a spring 27 held by a bolt 26 and washers 28, 29. Slots such as 30 allow the plate 16 to expand radially. A layer of heat insulating material 12 is provided in the outer wall of the rotor. The rotor is divided by radial partitions 3 which carry at their upper and lower ends sheetmetal sealing members 35, Fig. 5, contacting with the head plates. The sealing members are connected to plates 36 which are secured at their inner ends to the hub portions of the rotor and are loosely clamped to the partitions 3 by means of bolts 37 engaging with slots 39.
Patent GB-638410-A (GB)
Title: Improvements in spare wheel mountings for motor cars
IPC: B62D43/08
Filed: 1948-10-25
Abstract: 638,410. Spare wheel carriers. PARK, WARD, & CO., Ltd., and WARD, C. W. Oct. 25, 1948, No. 27714. [Class 136 (i)] An automobile spare wheel mounting in which the wheel is carried on its side within the body of the automobile comprises a sector shaped arm A of light metal adapted to be swung about a pivot-bracket B mounted on the body and provided with a series of rollers E which traverse an arcuate track within the body, the track extending from a convenient position for removal or replacement of the wheel to a position in which the wheel will lie within a recess in the body. As shown, the track is in the form of an inclined ramp G and the pivot B<SP>1</SP> of the arm A is mounted on a spring M so that it may rise as the arm is moved up the inclined ramp. The arm A is provided with a dished annular casing C to receive the spare wheel. A spring catch H releasable by a handle I engages with one or other of sockets K, K<SP>1</SP> to lock the mounting in position.
Patent GB-705379-A (GB)
Title: Air-cooled two-stroke internal combustion engine
IPC: F02F1/06
Filed: 1950-11-13
Abstract: 705,379. Engine construction; cooling cylinders. KLOCKNER - HUMBOLDTDEUTZ AKT.-GES. Nov. 13, 1950 [Jan. 11, 1950], No. 27724/50. Class 7(2) An air-cooled two-stroke engine cylinder 1, Fig. 1, has an intermediate annular portion slidably mounted in the engine housing and containing scavenge and exhaust ducts, 9, 10 respectively, leading from piston-controlled scavenge and exhaust ports to the periphery of the portion where they have all substantially the same axial positioning and length. As shown, cylinders 1 and heads 7 are secured together, and suspended from covers 2, by screws 8. Further screws 5, 6, Fig. 5, secure the covers 2 to an upper housing member 3, and the member 3 to a lower housing member 4, respectively. The plane of division between the members 3, 4 can be above or below the scavenge and exhaust belt, or there may be a plane of division both above and below the belt to give an intermediate housing member. Scavenge air supply passages 11, 12, Fig. 3, and feed channels 11a, Fig. 2, therefor, are formed in the housing, which has openings 17, 18, Fig. 2, at the sides to allow cooling air to flow around fins 16, 20 on the cylinders 1. Spaces 22, 23, Fig. 3, running axially of the cylinders are provided in the cylinder and housing to assist cooling. The mating surfaces of the annular portion and housing above and below the scavenge and exhaust belt are rendered fluid-tight by packing rings or by machining to a close fit
Patent GB-798081-A (GB)
Title: Improvements in or relating to titanium or titanium base alloys
IPC: C25D5/38
Filed: 1953-10-09
Abstract: Billets, slabs and bars of titanium or titanium base alloys are protected against surface oxidation by coating them with silver or silver base alloy.  The coating is preferably applied by electrodeposition but may be applied by other methods, e.g. spraying, vacuum deposition or in the form of a preformed layer secured to the titanium by heat and/or pressure.  As an example, a titanium extrusion billet was cleaned by rough machining and sand or shot blasting, coated by electrodeposition with silver to a depth of 0.005 inch and preheated in a furnace to 850 DEG C. before being extruded. Reference has been directed by the Comptroller to Specification 749,365.
Patent GB-738462-A (GB)
Title: Improvements in or relating to the drafting or drawing of slivers of fibrous materials
IPC: D01H5/72
Filed: 1953-10-09
Abstract: 738,462. Drafting textile fibres. RAPER, G. F. Oct. 9, 1953, No. 27799/53. Class 120(2). Fibres in a sliver undergoing draft between two pairs of rollers travel through a passageway formed by four surfaces which are adjustable, but which during drafting are stationary and constrict the sliver to less than its natural crosssection over the major part of the length of the zone in which the fibres are in the grip of the front rollers although none of the four surfaces extends as far as the nip of the front rollers. In one embodiment, Fig. 1, a passageway is formed by a bottom plate d, an integral side plate c and a top plate e provided with two studs ell that project through a slot c<SP>11</SP> in a side plate c<SP>1</SP> to guide the top plate e when it is raised to inoperative position where it may be held by spring plungers f connected by a bar f<SP>11</SP>. During normal working, the spring plungers f hold the top plate e in operative position. Adjustment of the height and angle of inclination of the bottom plate d may be made by knobs h<SP>1</SP> that rotate eccentrics g, g<SP>1</SP>. A further embodiment, Fig. 3, has fixed side plates and a top plate e detachably fixed to them. Slidably mounted between the side plates is the bottom plate d that is supported by weight or spring- loaded levers h<SP>11</SP>, either of which may be locked to provide a pivot about which the plate d may rock. The top and bottom plates may be shaped to provide any desired longitudinal or crosssectional configuration for the sliver whilst it is being constricted or their inner surfaces may be flexible. Either the top or the bottom plate may be made in sections longitudinally, each section being separately acted upon by pressureapplying means. To accommodate irregularities of thickness across the width of the sliver, the top and bottom members may be split lengthwise into two or more sections. The width of the channel formed by the side plates may be constant or may be varied along the length of the channel. Preferably the channel unit is traversed with the roving and the movement of yielding members may initiate changes in the relative speeds and settings of both pairs of rollers.
Patent GB-1400279-A (GB)
Title: Teaching system
IPC: G01D5/25
Filed: 1972-06-14
Abstract: 1400279 Educational appliances J ST CLAIR KILBY 14 June 1972 [18 June 1971 (2)] 27808/72 Heading G5G A teaching system comprises a recording medium (100) (Fig. 12, not shown) for reproducing either audibly, e.g. by-means of a cassette recorder 12, or visually, e.g. by means of video apparatus, a series of questions each followed by data signals (103) representing a correct answer to the particular question; an encoder including tabs 32 controllable by a student hearing or seeing the question for encoding an answer; an indicator associated with the encoder for indicating the encoded answer; and a comparator for comparing the encoded answer with the correct answer contained in the data signals. In operation, the student presses a button 22 to start the tape which automatically stops after the question has been presented. The student then sets up an alpha-numeric answer to the question, by appropriately moving the tabs 32 along respective slots 39, the tabs being associated with indicating strips (42), Fig. 2 (not shown), carrying alphabetic characters visible through openings 46 and numeric characters visible through openings 48 so that, as shown, any twelve character number or word or phrase can be composed in the line of openings 48 or 46. The tabs are also associated with printed circuitry (Figs. 2 to 7, not shown) from which can be derived a signal representative of the positions of the tabs and thus of the encoded answer. After encoding his answer, the student again presses button 22, and the signal derived from the encoder is compared with the correct-answer signal on the recording medium, an indicator light 23 being energized if the answer is incorrect. Suitable circuitry for the comparator and for enabling the teacher to prepare the recording medium with the questions and correct-answer data is described with reference to Figs. 13 and 15 (not shown).
Patent GB-602133-A (GB)
Title: Process for purifying volatile organic liquids
IPC: C07B61/00
Filed: 1945-10-24
Abstract: <PICT:0602133/III/1> Volatile impurities are removed from organic liquids, particularly polymerizable liquids such as acrylic compounds, by subjecting the liquid to distillation in a fractionating column in such a manner that the overhead vapours include the impurities.  The vapours are condensed and scrubbed with an immiscible liquid which will retain a proportion of the impurities; the condensate is then separated from the scrubbing liquid and returned to the top of the column.  The vapours may either be condensed by direct contact with the scrubbing liquid, or condensed by indirect cooling first and then contacted with the scrubbing liquid.  One or more additional components may be added to the impure liquid in the still pot, either with the object of facilitating the distillation of the liquid or to sweep out the impurity at a lower temperature than that at which the liquid distils.  In an example, acrylonitrile containing 0.882 per cent HCH (700 parts) and glacial acetic acid (150 parts) were charged to the still pot 1 and distilled up fractionating column 1a.  The overhead vapours were condensed in condenser 13 and the condensate led to the bottom of packed tower 14 where it was scrubbed with 5 per cent sodium carbonate solution, saturated with acrylonitrile, introduced into the tower, through pipe 15, at a rate equal to that of condensate formation.  The scrubbed liquid collected as a separate phase at the top of the scrubber and was returned to the column through line 18.  Spent scrubbing liquid was withdrawn through overflow 17.  The process was continued for 2 hours when analysis of a sample, withdrawn through outlet 21, showed that the overhead acrylonitrile contained less than 0.0017 per cent HCN.  Valve 22 was then closed and the purified acrylonitrile distilled-off and collected through outlet 21.  In another example, acrylonitrile containing 1.018 per cent HCN (700 parts) and methylene chloride (100 parts) were placed in still 1 and heated to a temperature between 42 DEG  and 78 DEG  C.  Methylene chloride vapours passed from the top of the column, were condensed in condenser 13, and scrubbed with water, to remove HCN, in scrubber 14; the purified ester being returned to the column. After operating for 1.2 hours, the methylene chloride was removed from the still by rectification.  The acrylonitrile remaining in the still was found to have an HCN content of less than 0.002 per cent.  The purification of hydrocarbons, methyl acetate, and acetoacetic ester is also referred to. Specifications 431,398 and 586,489 are referred to.
Patent GB-815929-A (GB)
Title: Improvements in or relating to electric control systems
IPC: H02P23/00
Filed: 1956-09-14
Abstract: 815,929. Automatic speed control systems. WESTINGHOUSE ELECTRIC INTERNATIONAL CO. Sept. 14, 1956 [Sept. 20, 1955], No. 28138/56. Class 38 (4). In a system for a prime mover driving an alternator, the throttle is electromagnetically controlled through a magnetic amplifier in response to the difference between two direct currents derived from the alternator through a circuit including a rectifier producing a constant voltage and through a further circuit producing a frequency dependent voltage, respectively, and negative feedback to the magnetic amplifier is provided by means responsive to throttle position. Throttle T of the engine E, Fig. 3b, is actuated by a piston P, Fig. 3a, in accordance with current through solenoids 8, 14 in the outputs of self-saturating magnetic amplifiers MA1, MA2, control windings 48-51 of which are energized by the difference in outputs of rectifiers R and RF fed by the generator G. Rectifier RF, which includes in its input a ferro-resonant circuit 41, 42 and a reactor 44 produces across resistor 46 a voltage which is inversely proportional to frequency. Wiper 47 of potentiometer 37 is preset by motor RM to be at the same potential relative to point 39 as point 45 and the amplifier windings 48-51 are thus energized in accordance with frequency error. Bias windings 25, 26, 33, 34 are energized by the output of rectifier R through potentiometers 28 and 31, and feedback windings 59-62 are energized by the potential across the wipers of potentiometers 54, 64, the latter of which is driven by the throttle actuator. A further potentiometer 63 provides for gain adjustment. A voltage proportional to I cos #  is developed across lines 65, 74 by potentiometers P1-P6, across the outputs of rectifiers R1-R6, the secondaries S1-S6 of transformers T1-T6 being coupled to primaries 76, 77, 176, 177, 276, 277 which have a large number of turns and are energized by the system phase voltages, and primaries 78, 79, 178, 179, 278, 279 which have few turns and are energized by current transformers 80, 90, 92. The voltage is applied to load compensating windings 70-73 through potentiometers 66 and 67, and load sharing with a second generator is provided by windings LS3, LS5, LS6, LS8 and corresponding windings in the control circuit of the second generator through switch SW and the circuit shown in Fig. 8. Proportioning of the loads is effected by potentiometers 66 and 266. Characteristics and vector diagrams are described with reference to Figs. 5-7 (not shown) and a method of adjusting the frequency sensitive circuit 41, 42 for a different frequency is described with reference to Fig. 4 (not shown). Reference has been directed by the Comptroller to Speciftcation 655,115.
Patent GB-485554-A (GB)
Title: Method of manufacturing rubber-like materials
Filed: 1936-10-16
Abstract: Rubber-like materials are prepared by treating a substance of the formula (HOCnH2n)2Sx, in which x is 2, 3 or 4 and n is an integer, with concentrated sulphuric acid, phosphoric acid, arsenic acid, boric acid anhydride, potassium bisulphate, a metallic halogenide such as zinc, tin or mercury chloride, boron fluoride, or ammonium chloride.  In an example, di-(b -hydroxyethyl) trisulphide is heated with concentrated sulphuric acid.  Samples have been furnished under Sect. 2 (5) of materials prepared by reacting (1) di-(b -hydroxyethyl) trisulphide with boron fluoride, zinc bromide and phosphoric acid, &c., (2) di-(b -hydroxyethyl) disulphide and di - (b - hydroxethyl - tetra sulphide with concentrated sulphuric acid.  The sulphides specified above are prepared by treating ethylene chlorhydrin with the appropriate alkali polysulphide.  In the Specification as open to inspection under Sect. 91, the limits of x are not specified.
Patent GB-233296-A (GB)
Title: Improvements in and relating to the knitting of striped plated fabrics
IPC: D04B9/26
Filed: 1924-11-25
Abstract: 233,296. Scott & Williams, Inc., (Assignees of Pluda, G.). May 3, 1924, [Convention date]. Circular machines ; needles ; knitting, methods of.-Longitudinally striped plated fabric is obtained by the use of two kinds of latch needles differing in the position of the hooks, those of needles B set back relatively to needles A. The needles being arranged in any desired order, according to the pattern to be made, and fed with two yarns x, y, the point b of the striping needle B will draw the yarn x over behind the yarn y, thus reversing at this needle the position of the two yarns occupied when acted on by the ordinary needles A. A yarn guide C is employed which deflects the yarn from a substantiallv vertical line 3 to an horizontal line 4.
Patent GB-752533-A (GB)
Title: Paper sheathed pencils
IPC: B43K19/14
Filed: 1954-09-30
Abstract: 752,533. Pencils. BLAISDELL PENCIL CO. Sept. 30, 1954 [Jan. 21, 1954], No. 28250/54. Class 146(3) A paper sheath for winding about a rod of material, e.g. a pencil lead, an eraser, or a styptic stick, includes rows of longitudinally spaced slits extending transversely of the sheath. As shown, a sheet 12, Fig. 2, of paper has strips 15 formed by rows 17 of parallel slits, not shown, the slits in each row being spaced apart a distance between the range of 0.022 to 0.040, preferably 0.025 inches. The spaces between the slits form ears 22, Fig. 2, to facilitate gripping the sheath when the sheet 12 is spirally wound around a rod 11 and adjacent strips are separated to form a conical end. A string 16 may be provided to facilitate separation-of the strips between apertures 14 in the sheet. The strips are preferably 3/16 of an inch wide, while each slit is preferably 1/16 of an inch long. The successive wound layers of the sheet may be adhesively secured together and treated with paint, varnish, or enamel.
Patent GB-710555-A (GB)
Title: Cleaning swabs and holders therefor
IPC: A47L13/44
Filed: 1952-11-10
Abstract: 710,555. Pads. PERSONAL PRODUCTS CORPORATION. Nov. 10, 1952 [Nov. 9, 1951], No. 28304/52. Addition to 710,524. Classes 19 and 61 In a device for cleaning toilet bowls and the like of the type disclosed in the parent Specification, comprising a disposable bag-shaped swab and associated holder, a rip-cord is provided for rupturing and disengaging the swab after use. In one embodiment, in assembling the swab, which is otherwise as described in the parent Specification a string 21 (Fig. 1) is glued across the inner face of the pad and wrapper sheet before folding up. A rigid holder is used, Figs. 6, 9, having a head 31 bearing flukes 34 to engage and retain the swab: alternatively a wedge-shaped projection may be provided on one face, Fig. 10 (not shown). When the swab is attached to the holder, the free portion 21 of the string is laid along the handle and attached to a button 36 on the end: after using the swab, the string is detached and used to disrupt and disengage it, being discarded with the swab. In another embodiment, Figs. 11, 12 (not shown) the swab is as described in the parent Specification, and a rigid holder carrying a permanent rip-cord is provided. The cord lies along the holder when not in use, one end being permanently anchored in the toe of the head 31, while the free end is passed through a notch in the handle end and secured to a button the underside.
Patent GB-234717-A (GB)
Title: Improvements in and relating to garden shears for grasscutting
IPC: A01G3/06
Filed: 1924-11-29
Abstract: 234,717. Fenney, F., and Robertson, J. E. Nov. 29, 1924. Hand - shears. - In shears for grass-cutting with a box or attachment for receiving the cuttings, the box F is secured to the shears by a thumb-screw E screwing through a clip D against the lower blade B which is disposed between the clip and the side F<1> of the box; a hole in the side F<1> engage the pivot C of the shears.