baber/WOPTO huggingface dataset:
Patent GB-835468-A (GB)
Title: Recovery of tetracycline from solutions thereof
Filed: 1957-07-03
Abstract: Tetracycline free base in a pure form having improved colour characteristics is recovered from solutions thereof by contacting a methyl alkyl ketone solution of the crude tetracycline with acidulated water at a pH of 1.5 to 2, separating the resulting aqueous phase containing the tetracycline from the solvent phase, adjusting the pH of the aqueous phase to pH 2 to 4 and preferably 3.5, and recovering the tetracycline by crystallization from the aqueous phase.  It is preferred that the quantity of acidulated water be small and that the pH of extraction be 1.8 to 2. Specified methyl alkyl ketones are methyl isobutyl ketone p  (preferred), methyl butyl ketone, methyl propyl ketone, methyl isopropyl ketone and methyl amyl ketone.  A preferred methyl isobutyl ketone solution of tetracycline is that obtained by extraction from a fermentation broth in the manner described and claimed in Specification 821,310.  A methyl alkyl ketone solution may be prepared by extracting at pH 1.5 the filter cake obtained by adjusting a fermentation broth to pH 7 to 8.5 and filtering. The tetracycline free base may be used therapeutically without further purification; or may be treated with butanol, 2-ethoxyethanol and hydrochloric acid to form the hydrochloride. Reference has been directed by the Comptroller to Specification 747,779.
Patent GB-205602-A (GB)
Title: Improvements in and relating to bottle labelling machines
IPC: B65C9/46
Filed: 1922-08-02
Abstract: 205,602. Purdy, P. J. Aug. 2, 1922. Platen machines.-A device for printing dates or other information on the backs of labels before they are applied to bottles in labelling-machines of the kind wherein gummed pickers take a label from a pile to a bottle, and wipers affix the label to the bottle, comprises a frame adapted to be clamped on the rods 3 that support the holder 4 for the pile of labels x, the frame supporting a carrier for a type-holder 12 and means for moving it in a plane parallel to the labels to a position beneath the label pile and then tilting it upwards to make the impression. The type-holder is secured to a rack 10 adapted to be reciprocated by a pinion turned by a chain 15 connected to a lever 17 of the gumming-mechanism, one end of the rack being bent so as to cause the type to strike the label pile. Inking-apparatus.-The inking-roller is the lowermost of three superposed rollers 25<a> &c. mounted in slots in a fork carried by a rod 23 adapted to be raised from and lowered into the path of the type by a lever 23a actuated by strikers 24, 25 attached to the rack. Ink may be supplied to the rollers from a reservoir in the rod 23.
Patent GB-423049-A (GB)
Title: Improvements in or relating to electric incandescent lamps with internal reflectors
IPC: H01K9/08
Filed: 1933-07-27
Abstract: 423,049. Electric-lamp bulbs with internal reflectors. LAMPE YVEL AUTO-LAMPE & CIE ANCIENS ETABLISSEMENTS L. LEVY ET A. MONNIER, 11, Rue Torricelli, Paris. July 27, 1933, No. 21137. Convention date, Aug. 8, 1932. [Class 39 (ii)] In an electric incandescent lamp for use in a motor car headlight, of the kind provided with an internal reflector, the section of the reflector normal to the longitudinal axis of the lamp has the shape of a V with limbs d, e, Fig. 6, forming with each other an angle larger than 90‹, preferably an angle of 105‹. The radius of curvature of the rounded surface f, Fig. 7, by means of which the bottom of the reflector is united with the edge of the latter is made relatively small, for example 4 m.m., the form of the reflector being such that an increased illumination is obtained from the lamp. In the example the reflector c, Fig. 1, is mounted beneath the auxiliary filament b of a lamp bulb provided with a main filament a.
Patent GB-212188-A (GB)
Title: Improvements in the manufacture of asphalt
IPC: E01C7/18
Filed: 1923-08-21
Abstract: 212,188. Building Accessories & Flooring Co., Ltd., Goodwin, H., and Smith, H. Aug. 21, 1923. Asphalts.-Gilsonite is melted with a fluxing oil and mixed with a finely-divided mineral aggregate such as limestone or a mixture of sand and ground chalk. Pigments such as red oxide of iron, yellow ochre, chromium oxide, red lead, and lead chromate may be added. The Specification describes several examples of compositions, of which the following is typical: 100 parts of Gilsonite at 160‹ C. and 100 parts of heavy Texas oil at 110‹ C. are mixed and heated for 2-3 hours at 160-170‹ C. to produce an asphalt cement. 25 lb. of this cement is run into a mixture of 112 lb. of sand, 40 lb. of ground chalk, and 20 lb. of anhydrous chromium oxide heated to 200‹ C. The mixture is agitated until a uniform dark green paste is obtained. For harder asphalts a cement consisting of 100 parts of Gilsonite and 50 parts of Texas oil is used. Specification 212,106 is referred to.
Patent GB-639515-A (GB)
Title: Speed-responsive presser devices for sewing machines
IPC: D05B29/02
Filed: 1948-08-11
Abstract: 639,515. Sewing-machines. SINGER MANUFACTURING CO. Aug. 11, 1948, No. 21160. Convention date, April 5. [Class 112] Presser-bars ; feed by presserfeet :-The pressure applied to the presser mechanism is varied in response to variations in speed of a shaft of the machine, in order tc avoid the effects' of inertia at high speed, especially in a machine having alternating presser-bars one of which is used to feed the work, without requiring heavy pressure at low speeds with consequent possibility of damage to the work and other undesirable effects. In the machine shown a centrifugal device on the main shaft applies additional load to a leaf-spring which acts on the presser-bar and feed-bar. The spring 40 rests at one end on a fixed bracket 41 and at the other on the head of a screw depending from a stud at the middle of a lever 19 of inverted T-form, of which the forward arm is pivoted to the feed-bar 17 and the rearward arm is connected by a vertical link to a collar on the presserbar 13 and by a horizontal link to a part of the machine frame ; the spring is stressed by a rod 45 screwed into a bushing 46 in the machine arm. An auxiliary leaf-spring 47 rests near its left-hand end on the spring 40 and at the other end on the head of a link 48 carried by a lever 50; the bushing 46 is adjusted into contact with the spring 47 to act as a fulcrum. The other end of the lever is engaged between a flange 52a integral with a sleeve 52, slidable on the main shaft 5, and a thrust bearing 53 on the sleeve. A collar 55 fixed on the shaft carries two weights 63 pivoted at 58 to lugs on it and provided with tails 60 in contact with pins sliding in the collar and engaging the ends of the sleeve 52. As the shaft rotates the weights move away from the shaft under centrifugal force and move the sleeve 53 along the shaft, against the action of a spring 66, to lift the right-hand end of the spring 47 and thus apply additional pressure to the left-hand end of the spring 40. The alternate lifting of the presser-bar and feed-bar is produced by an eccentric 20 on the shaft 5, and pitman 22 through arms 23, 26 on a rocking sleeve 24, the latter arm being linked to the upward limb of the T-lever 19. The feed movement of the bar 17 is derived from an adjustable eccentric 21 and pitman 33 through arms 34, 36 on a rock-shaft within the sleeve 24, the lower end of the arm 36 being linked to the bar 17.
Patent GB-479348-A (GB)
Title: Apparatus for playing a game
IPC: F41J3/02
Filed: 1936-07-31
Abstract: 479,348. Dart boards. WARING, F. E. July 31, 1936, No. 21193. [Class 132 (iii)] A dart board comprises a wooden or like supporting member b and two fabric sheets a, c stretched over its two opposite faces, the margins of the sheets overlapping around the edges of the support and being secured to the frame and to each other by an adhesive strip d passing around the edges of the board and one or both fabric sheets being marked to resemble a golf course. In various modifications, the face of the board is in relief and the hole representations consist of cork or like plugs j. The board may be clamped to a stouter backboard and the golf course may be simply printed or painted on the board or on transparent sheets fixed thereto. The darts may be shaped to represent golf clubs or golf balls and tees.
Patent GB-1421351-A (GB)
Title: Load-lifting mechanism for a lift truck
IPC: B66F9/08
Filed: 1973-05-04
Abstract: 1421351 Fork lift trucks KNICKERBOCKER CO 4 May 1973 [8 May 1972] 21193/73 Heading B8H Telescopic mast for a fork lift truck comprises a lower fixed section 28, an intermediate section 30, an upper section 32 and a load carriage 22 supporting forks 24. An hydraulic ram 34 is mounted on the lower section and its piston-rod 76 mounts pulleys 80 about which chains 33 pass. One end of the chains 33 is secured to the cylinder 74 of the ram and the other end is secured to a slide 60 movable along rods 64 mounted on the intermediate section 30. Further chains 35 pass over pulleys 86 mounted on the slide and are connected at one end to rails 36 on which the slide moves and at the other end to a bar 70 movable along the upper section 32 to engage with and raise the lift carriage 22. A latch 130 mounted on the upper section 32 engages a roller 180 on the lower section 28 during the raising of the lift carriage to restrain the upper section 32 from movement. A cam 128 on the carriage engages the latch as the carriage approaches its upper position on the upper section to release the upper section from the lower section and to lock the carriage with the upper section. Simultaneous with the carriage reaching the said upper position the bar 70 abuts a stop 90 on the cylinder 74 and the slide 60 abuts a stop 66, thus further extension of the ram acts through the chains 33 to raise the intermediate section and through chains 35 to raise the upper section and hence the lift carriage. A pin (71), Fig. 4 (not shown), on the bar 70 engages an indented ball (93) in the stop 90 to retain the bar 70 in contact with the stop during the extension of the mast and also to restrain the ram from tilting forward due to the loading thereon. A bracket 82 on the cylinder 74 engages with hooks (222), Fig. 9 (not shown). In the intermediate section in the retracted position of the mast to prevent similar tilting of the ram. In an alternative embodiment, Fig. 19 (not shown), the lower section (28) is mounted to telescope within a base section (314) and the ram (340) has an additional downwardly extending piston-rod (302) carrying pulleys (304) around which cable (306) passes. The cable being secured at opposite ends to the cylinder (74) and the base section (314). In a further embodiment, Fig. 20 (not shown) a fourth mast section (402) carries the original mast and a chain (406), secured at opposite ends to the section (402) and the intermediate section (30), passes around a pulley (404) mounted on the cylinder (74) of the ram (34).
Patent GB-1047724-A (GB)
Title: Tape-winding method
IPC: G03B21/32
Filed: 1964-05-22
Abstract: 1,047,724. Winding webs. CREED & CO. Ltd. May 22, 1964 [May 24, 1963], No. 21216/64. Heading B6B. [Also in Divisions D1 and G5] Relates to apparatus for winding a web (e.g. punched record tape) in the form of a figure " 8 " comprising a collapsible core 8b and a guide with a roller 15, the guide and the core moving relatively to each other so that the web is first wound in the form of helix during the first 360 degrees rotation of the core, and is then wound back on itself with a further helix during the next 360 degrees rotation of the core. The guide or the core is reciprocated, the reciprocation being provided by a cam cylinder arrangement 8a-co-operating with a cam follower 7, Fig. 1. When the winding is complete, the core 8b is collapsed so that the completely wound web, Fig. 4, may be removed. If the two portions of the wound web 1 and 2 are hinged outwardly about the overlapped portions 3, the web will take the form of a figure " 8," this configuration being such that the tape may be pulled from either end without twisting.
Patent GB-500801-A (GB)
Title: Improvements in or relating to machines for attaching heels to shoes
IPC: A43D79/00
Filed: 1937-07-31
Abstract: 500,801. Heel-attaching machines. BRITISH UNITED SHOE MACHINERY CO., Ltd., GOULDBOURN, J., and KESTELL, T. A. July 31,1937, No. 21258. [Class 17 (i)] Relates to machines o the kind described in Specifications 23,031/11 [Class 17 (i)], 451,350 and 461,410, and consists in modifications mainly pro viding that a single de pression of the operating treadle automatically re sults in heel attaching and top piece securing being performed in sequence A band clamp 3 of the kind described in Specification 475,579 is used for positioning the shoe. As described in the prior Specifications a treadle 29 first depresses a last plate 1 and then engages a clutch to drive the machine through a complete cycle including two depressions of the plate. The nail transferring device 9 carries nails to the jack, and is pivoted at 197. It is connected by a link 193, slotted to allow lost motion, to an arm 191 of the heel and top lift holder pivoted at 189. The holder comprises a front bar 19 and fork 21 for holding a heel, and similar members 23, 25 for engaging a top lift. A spring 201 urges the holder clockwise, a latch 217 engaging the end of the arm 191 to prevent this movement except when the latch is released.. As described in the prior Specifications, the plate 1 is depressed by a rod 41. This rod and a short rod 39 below it, form a toggle bent and straightened by a link 137 as the treadle is depressed and, for the second time in the cycle, after one revolution of the cam-shaft. A bell-crank lever 225, which can be moved by a knob 229, but which is normally held in either extreme position by a spring 231, maintains a link 207 in position to be actuated by a compression spring 213 when the latch is tripped, to bring the top lift over the heel. To allow the plate 1 to descend a smaller distance at its second descent, since the surface of the top-lift is higher than the top of the heel, the lower end of the link 39 is supported by a piston 145 working in oil in a cylinder 143, a valve 161 depressed by a spring 165 closing a byepass when the clutch is engaged. When the byepass is closed the piston can move downwards, and open the valve against the resistance of the spring, but cannot move upwards. The nail drivers are raised by a cam 93 instead of by the toggle described in the prior Specifications. In operation, nails are supplied to the jack by the device 9, a shoe is positioned on the jack, and a heel and top lift in the holder 5. The treadle is then depressed, first bringing the clamp 1 down on to the heel and then starting the machine, which drives the attaching nails, the points projecting at the tread face of the heel. As the toggle breaks and the clamp 1 ascends the top lift is swung into position above the heel and the second depression of the clamp presses it onto the ends of the nails. The second rise of the nail drivers is inoperative since no fresh nails have been supplied. The clamp rises and the work may be removed and the cycle repeated.
Patent GB-812279-A (GB)
Title: Improved electric shielded wire connector, connection and method of and apparatus for making a connection
IPC: H01R9/05
Filed: 1955-07-22
Abstract: 812,279. Jointing by stamping. A.M.P. Inc. July 22, 1955 [July 23, 1954], No. 21274/55. Class 83 (4). [Also in Group XXXVI] The ends of a sleeve connector (see Group XXXVI) are crimped on to the shields of cables by dies 82, 84, the upper die 82 consisting of parallel plates 100, 102 having re-entrant crimping faces 88, 90 between flat surfaces 86 and of different radius so as to form a shoulder 92 between them. The lower die is of similar construction except that parallel walls 94 extend forwardly of the crimping faces and receive the upper die between them. Fig. 6 shows the crimp produced by the dies. The curved die faces produce rounded portions 52 whilst the surfaces 86 collapse the sides of sleeve 34 to form triple folds 50.
Patent GB-1017986-A (GB)
Title: Iminodibenzyl derivatives
IPC: C07D413/14
Filed: 1964-05-22
Abstract: The invention comprises compounds of the formula <FORM:1017986/C2/1> wherein A represents a C1-4 alkylene radical, R represents a hydrogen atom or a hydroxyl, C1-5 alkoxy, cyano, carbamoyl or acylaminomethyl (in which the acyl radical is a carboxylic acid acyl radical having up to 7 carbon atoms) radical and R1 represents a phenyl, tolyl, halophenyl, halomethylphenyl or an <FORM:1017986/C2/2> radical in which each of Q and Q1 is a C1-6\t alkyl radical or Q and Q1, together with the adjacent nitrogen atom, is a 5- or 6-membered heterocyclic radical; and acid-addition and quaternary ammonium salts thereof.  The compounds are prepared by reacting a compound of the formula <FORM:1017986/C2/3> with a compound of the formula <FORM:1017986/C2/4> wherein one of X and X1 is hydrogen and the other is the group -A-Y, in which Y is a halogen atom or a sulphonyloxy group having up to 7 carbon atoms.  The reaction may be carried out in the presence of a base and with or without a solvent. Pharmaceutical compositions, e.g. tablets, for use in the treatment of psychosis, comprise a compound of the invention together with a pharmaceutical carrier or diluent.
Patent GB-1310237-A (GB)
Title: Method and apparatus for rotary bi-axle type friction welding
IPC: B23K20/12
Filed: 1970-05-04
Abstract: 1310237 Welding by pressure TOYODA JIDOSHOKKI SEISAKUSHO KK 4 May 1970 [12 May 1969] 21323/70 Heading B3R In friction welding wherein a rotatable workpiece 18 is axially moved in a non-rotating state into contact with a rotating workpiece 12 and is brought up to the rotary speed of the latter by contact therewith, the frictional welding heat generated is made responsive to both the torque required to accelerate the mass of the workpiece 18 and apparatus fast therewith and to a variable torsional loading imposed on the workpiece 18. The variable torsional loading is achieved by driving a means 50, such as oil pump 21 (Fig. 2), from the workpiece 18, and by variably regulating the output from said means. As shown, the workpiece 12 is held in a driving chuck 11 driven by a motor 2 via a belt 7, a spindle 5 and a clutch 9. The workpiece 18 is held in a driven chuck 17 driving the pump 21 (means 50) via a spindle 16. Brakes 10, 19 are provided to station the spindles 5, 16. A housing 14 of the driven spindle 16 is axially leftwardly movable by a rod 15 of a pressure cylinder (not shown). A cutting tool 20 is provided to remove frictionally upset material as it is formed. The output from the pump 21 is infinitely variably regulated by an arrangement of valves 23, 25, 30. The valve 23 bleeds off, to a pilot line 26, a proportion of oil supplied to it from the pump 21 through a line 22. When the pressure in the line 26 drops below a predetermined minimum which is a function of line 22 pressure, the valve 23 relieves pressure in the line 22. The valve 25 relieves pressure in the pilot line 26 and is controlled by a loading spring 45 which is adjustably acted upon by a piston 40. The latter is variably positioned by pressures in chambers 41a, 41b which are selectively energized from a pump 32 via flow control and changeover valves 36, 37. The valve 30 automatically opens to relieve excess pressure in the pilot line 26. To achieve a rapid final increase in the speed of the driven spindle, e.g. for uniform workpiece length or improved strength, a dump valve 29 may be operated to nullify pressure in the pilot passage 26.
Patent GB-794359-A (GB)
Title: Process for the production of aluminium hydrocarbons
IPC: C07F5/06
Filed: 1955-07-22
Abstract: Aluminium hydrocarbons are prepared by reacting an olefine of formula CH2=CRR1 wherein R and R1 are similar or dissimilar hydrocarbon radicals, including closed chain radicals, with aluminium and hydrogen to produce a compound of general formula Al(CH2-CHRR1)3 or HAl(CH2-CHRR1)2, and subjecting the compound so produced to a displacement reaction with an olefin containing a CH2=C< group and different from that employed in the initial stage of the process. Isobutylene is preferred for carrying out the initial stage, but any olefine containing the isopropenyl group such as 2-methyl-pentene-1, 2-ethyl-hexene-1 and limonene may also be used.  In the displacement reaction the olefin may be ethylene, alpha-olefins of formula CH2=CHR, olefins of formula CH2=CRR1 being different from that employed in the first stage, cyclo-olefins having a side chain containing a CH2=C< group and cyclic hydrocarbons having a CH2 group linked by a double bond to a ring carbon atom.  Catalysts such as nickel, cobalt and platinum may be used in the second step; when the olefin to be used has a high boiling point an inert solvent such as hexane or benzene may be used.  The displacement reaction is preferably carried out at a temperature between 70 DEG  and 120 DEG C.  In an example, isobutylene is reacted with hydrogen and aluminium to give tri-isobutyl aluminium, which is then reacted with 2-ethyl-hexene-1 to give tri-isooctyl aluminium.  Other examples describe the preparation of tripropyl aluminium from tri-isohexyl aluminium, triphenylethyl aluminium, trihexyl aluminium, didodecyl aluminium hydride, triethyl aluminium, trihexadecyl aluminium, and dicyclooctyl aluminium hydride all from triisobutyl aluminium, and the reaction between vinyl cyclohexene and triisobutyl aluminium. Specifications 713,081, 742,642 and 770,707 are referred to.
Patent GB-1187301-A (GB)
Title: A Noise-Measuring Method
IPC: G01R29/26
Filed: 1967-05-09
Abstract: 1,187,301. Measuring noise figure. MATSUSHITA ELECTRONICS CORP. May 9, 1967 [May 23, 1966], No.21399/67. Heading G1U. The noise figure and equivalent noise resistance of an active electrical element, e.g. a field effect transistor, is calculated from the ratios of noise output voltages obtained for at least two values of a signal source impedance Ri connected to an input electrode of the element. Capacitors Ci are used to test that the equivalent noise resistance is independent of Ri and that the element is not a noise current source. The noise output voltage is fed through a frequency selective amplifier 3 and voltage squarer 4 to an indicator 5. The method is applicable to active circuits as opposed to single element) whose equivalent noise resistance may be assumed constant, and also to low input impedance active elements, provided the signal source impedance is low. The equations required for the calculation are given.
Patent GB-562264-A (GB)
Title: Improvements in knitting machines
IPC: D04B11/32
Filed: 1942-10-07
Abstract: 562,264. Knitting machines. WILDMAN MFG. CO. Oct. 7, 1942, No. 21417/43. Convention date, Oct. 18, 1941. Divided out of 562,243. [Class 74 (ii)] A welt point 50 for use on a straight-bar machine has a stem portion curved at its free end and is provided with a yarn retaining shoulder 51 in the concave side of the curved portion. The portion 54 of the stem providing the shoulder is narrower than the portion 52 immediately behind, so that the stem tends to shield the yarn from the shoulder. An eye 53 to receive the top of the needle is provided above the shoulder. Specification 562,243 is referred to.