baber/WOPTO huggingface dataset:
Patent GB-931714-A (GB)
Title: Improvements in or relating to vibratory equipment
IPC: B65G27/28
Filed: 1959-11-04
Abstract: 931,714. Vibratory mechanism. CHAIN BELT CO. Nov. 4, 1959 [Nov. 17, 1958; Nov. 28, 1958; July 6, 1959], No. 37467/59. Class 80 (4). [Also in Group XXX] In a vibratory system such as a jigging conveyer 110, Fig. 6, to which a vibratory force at a constant frequency is applied, at least one pneumatic chamber 122 is interposed between the vibrating members to bring the system to a natural frequency in the region of the imposed frequency and is tuned by adjusting the inflation pressure through connecting pipes 60 (not shown). in one example the conveyer 110 is supported on pneumatic cushions 113, 114 above fixed pillars 115, 116 and is vibrated by an eccentric mass shaft 124 on a frame 120 attached to the conveyer 110 by cantilever leaf springs 121. Pairs of pneumatic cushions 135, 136, Fig. 8, acting in opposition are placed between cross-members 139, of the frame 120 and members 142, 137 attached to the conveyer 110. Various systems for supply and control of air pressure to the air bags are described and include safety devices for preventing the motor from starting until the air bags are operating in the required pressure range. Tuning by controlling the restricted passage of air between opposed air bags is also described.
Patent GB-1395557-A (GB)
Title: Glazing
IPC: E06B3/60
Filed: 1972-08-11
Abstract: 1395557 Glazing ISEP STRUCTURAL ENG & PLATING (PTY) LTD 11 Aug 1972 [13 Aug 1971] 37654/72 Heading E1R A method of glazing comprises inserting the edge of a pane into a channel strip 26 and bending tabs 28 on the member around a frame part 16. The frame comprises uprights 16 and rails 14 with vertical weather seals 18. Two strips 26 of channel section are fitted on the vertical pane edges and tabs 28 extend normally or parallel to a limb of the strip, before bending over. The strip is of Al.
Patent GB-1517545-A (GB)
Title: Semiconductor switching circuits
IPC: H02M3/155
Filed: 1975-09-12
Abstract: 1517545 Semiconductor switching circuit NIXDORF COMPUTER AG 12 Sept 1975 [13 Sept 1974 10 Oct 1974] 37656/75 Heading H3T In a circuit in which a load 7 is repetitively switched by a semiconductor switch connected to a d.c. supply, energy loss on switching on is reduced by connecting in series with the switch and a known 'switch-off' circuit shown in the lower part of the Figure a circuit 2 comprising a tapped inductor, preferably iron-cored. Without circuit 2, on switch-on of 1, until diode 6 blocks e.g. in 0À5 Ás the current will be limited only by the rate of rise allowed by the transistor, and for a 400V supply switched at 30 kHz, a rate of 16 A/Ás causes a power loss in the switch of 24W. With circuit 2 in series, at first switch-on the voltage 17 rises over e.g. 0À1 Ás to reach supply level U above earth (Fig. 2 not shown) and the transformer action of coil 16 causes point 12 to drop to -U: diode 6 remains conducting until e.g. 0À5 Ás after switching, when it blocks and the current drops as inductor 4 comes into circuit. The inductor 9 and capacitor 13 ring for ¢ cycle of their resonant frequency, the energy then being dissipated in forward flow through diode 11, causing a loss of 2À4 W, plus a further loss less than 1W in the coil, plus a loss in the switch of only 0À4W. On switch-off ringing of the same resonant circuit causes capacitor 13 to be left with a residual charge, which at the next switch-on slightly modifies the voltages. Diode 15 prevents any surge of voltage at the transistor on switch-off. The entire circuit 2 may be inverted, with diodes 11  and 15 remaining in the same direction.
Patent GB-333133-A (GB)
Title: Improvements relating to blow-down valves for steam generators and the like
IPC: F16K37/00
Filed: 1929-12-09
Abstract: 333,133. Gerdts, G. F. Dec. 7, 1928, [Convention date]. Recording-apparatus, applications of. - A blow-down valve for steam generators or other steam containers is fitted with a recording indicator to record the time, extent of the lift and the duration of opening. In the form shown in the Figure the actuating lever a of the blow-down valve b is coupled to the pen c of the recorder by a wire e lever f and link g. In a modification the lever and pen are coupled by a wire housed in a flexible sheath.
Patent GB-1136119-A (GB)
Title: Anti-side tone circuit
IPC: H04M1/58
Filed: 1967-08-17
Abstract: 1,136,119. Anti-side-tone circuits. E. W. BLISS CO. 17 Aug., 1967 [12 Sept., 1966], No. 37828/67. Heading H4R. In a circuit comprising the usual 3-windin transformers T1, T2, the windings 20, 26 which provide the line balance are connected to similar RLC networks, the resistors and inductors being of low value compared with the line load and the capacitors of high value. By this means side-tone is eliminated over a considerable frequency range. The elements of the networks are adjustable for calibration.
Patent GB-953638-A (GB)
Title: Press for forming continuous planar thermoplastic sheet material
Inventor: MIDDLETON CARL WHITE
IPC: B29C43/00
Filed: 1962-10-09
Abstract: 953,638. Moulding thermoplastic sheets. WARNER BROS. CO. Oct. 9, 1962, No. 38099/62. Heading B5A. [Also in Division B6B] A web of synthetic plastic material is fed by parallel chains 46, 47, with a plurality of grippers mounted thereon from a supply roll 44 through a press mounted on a frame 39. The chains are intermittently driven by a reciprocating carriage 48 which grips the chairs adjacent the supply roll 44 for the return stroke. Each gripper, Fig. 9 (not shown), engages the web edge adjacent the roll 44 and releases it at the opposite end sprocket 50. The grippers prevent transverse shrinkage of the web after it is deformed in the press.
Patent GB-950397-A (GB)
Title: Feed adjusting and reversing mechanism for sewing machines
IPC: D05B27/22
Filed: 1962-10-09
Abstract: 950,397. Sewing machines. SINGER CO. Oct. 9,1962 [Oct. 9,1961], No. 38188/62. Heading D1G. [Also in Division F2] An eccentric 25, driving a work feed-advance pitman 28, has a tongue 24 slidable in a transverse groove 23 formed in a flange 22 fixed to the bed shaft 19 of the sewing machine. The eccentric is formed with a cylindrical bore 27 which is inclined to the axis of shaft 19 and which is slidably engaged by the inclined cylindrical end 37 of a sleeve 36 longitudinally slidable on shaft 19. An axial bore 30 in the latter slidably supports a rod 31 fitted with a transverse pin 32 which extends through longitudinal slots 33 in shaft 19 and through clearance holes in sleeve 36. Pin 32 also extends through longitudinal slots in a sleeve 39 which is fixed to shaft 19 and within which sleeve 36 is slidable with rod 31 for varying the eccentricity of eccentric 25. Sleeve 39 is formed with external lefthand screw threads 41 and righthand screw threads 42 engaged with respective stop nuts 50 and 43 disposed one on each side of pin 32. A pin 48 fixed to nut 43 passes through a clearance hole 49 in nut 50. Pin 32 normally abuts nut 43,under the bias of a spring 34 in bore 30, to establish a rate of forward feed. Actuation of a lever 60 moves pin 31 inwardly, via a linkage 62 to 65,till pin 32 abuts nut 50 to establish the same rate of reverse feed. Nut 43 is formed with a peripheral groove 45 engageable by a plunger 46 when the latter is depressed against the bias of a spring 47, to hold the nuts 43, 50 from rotation. Turning of the handwheel 15 in one direction thereby moves the nuts apart to increase the rate of feed, and in the other direction moves the nuts towards one another to reduce the rate of feed, the position of zero feed occurring when both'nuts abut the pin 32. Specification 786,712 is referred to.
Patent GB-1236420-A (GB)
Title: Improvements in or relating to signs
Inventor: SCOTT SAMUEL
IPC: G09F7/00
Filed: 1968-09-10
Abstract: 1,236,420. Road signs. SCOTT (INPAK) Ltd. 9 Dec., 1969 [10 Sept., 1968], No. 38309/ 68. Heading E1G. [Also in Division C4] A temporary road sign attachable to street posts comprises a transparent flexible envelope enclosing a printed paper sheet C on a stiff non-metallic backing, and at least one attachment strap G. The envelope may be formed by marginally welding p.v.c. sheets together. The strap G may be of extruded p.v.c. with a tongueless buckle; the backing may be of chipboard, millboard or expanded plastics; the printing ink may be fluorescent.
Patent GB-1322931-A (GB)
Title: Method and apparatus for the separation of carbon dioxide from admixture with acidic gas
IPC: C01B32/50
Filed: 1970-08-11
Abstract: 1322931 Gas mixture fractionation process USS ENGS & CONSULTANTS Inc 11 Aug 1970 [18 Aug 1969] 38718/70 Heading F4P Carbon-dioxide is separated from admixture with sulphur-containing acid gases e.g. H 2 S by cooling a compressed feed gas stream L3 in heat exchangers E3, E4, E5 to liquefaction temperature, fractionation in a column T10 from the bottom of which liquid acid gases are withdrawn at L4, L5 and used to cool exchanger E3 whilst gaseous carbon dioxide withdrawn from the head of the column at L6 is condensed and sub-cooled at E6 by an external refrigerant e.g., ammonia, and a portion thereof used in a line L10 as reflux whilst the remainder of the condensed carbon dioxide is vaporized in cooling the feed stream in exchanger E4, purified in absorbers I12, S13 and withdrawn as product through a line L11. Feed stream exchanger E5 is also cooled by ammonia refrigerant.
Patent GB-338407-A (GB)
Title: Improvements in and relating to tear-off writing blocks, calendars and the like
IPC: B42D5/00
Filed: 1929-12-18
Abstract: 338,407. Bifurcated & Tubular Rivet Co., Ltd., and Paterson, L. M. Dec. 18 1929. Bookbinding. - Means for securing the leaves 2 of a tear-off writing block &c. to a cardboard &c. base 3 comprises a bifurcated rivet provided with a shoulder or flange adapted to engage a washer 6 interposed between the block and the base.
Patent GB-1262169-A (GB)
Title: Method and apparatus for making helically rolled groove finned tubing
Inventor: MCELROY ARTHUR HAMILTON
IPC: B21C37/26
Filed: 1969-08-04
Abstract: 1,262,169. Making helically finned tube; Jointing by rolling. A. H. McELBOY. 4 Aug., 1969 [7 May, 1969], No. 38974/69. Headings B3A and B3M. In a method and an apparatus for making helically finned tubing a helical groove 101 is rolled into a tube 10 by means of a peripheral protrusion 100 on a roll 40, the base of a fin, formed with a tapered cross-section by a flanged roll 90 and a roll 92, is inserted into the groove and a part 102 of roll 40 and 104 of a roll 42 coaxial with roll 40 deform the metal on each side of the groove to, secure the fin in place. A second part on roll 42 reinforces the deformation caused by part 102 of roll 40. The rolls 40, 42 are rotatably mounted on a yoke which is movable toward and away from the tube in response to spaced switches which detect the ends of tubes passing through the apparatus. On detecting the trailing end of a tube being finned the rolls are moved away from the tube and the fin loosely engages the tube until the leading end of the next tube actuates a switch and the rolls are moved into engagement with the next tube. The switches are adjustable to allow a desired length of unfinned tube at each end of a tube.
Patent GB-1114705-A (GB)
Title: Improvements in the production of carboxylic acids and nitriles
Inventor: EDWARDS DAVID ALUN
IPC: C07C59/125
Filed: 1964-09-25
Abstract: A cobalt oxide of higher oxidation state than the monoxide is prepared by the alkaline oxidation of freshly prepared cobalt monoxide or cobaltous hydroxide with e.g. an alkali hypochlorite or persulphate.  The oxide may be represented approximately by the formula CoO1.1 to CoO1.9.  It may also be prepared in situ in a reaction mixture for the oxidation of alcohols and amines to acids and nitriles by the reaction of an alkali hypochlorite on an aqueous solution of a cobalt salt.ALSO:Carboxylic acids or nitriles are prepared by the oxidation of a compound containing at least one primary alcohol or primary amino group in the presence of a cobalt oxide of higher oxidation state than cobalt monoxide.  The cobalt oxide may be prepared by oxidizing freshly prepared cobalt monoxide or cobaltous hydroxide with e.g. an alkali hypochlorite or persulphate, or may be generated in situ by the action of an alkali hypochlorite, or other oxidizing agent, on an aqueous solution of a cobalt salt, and the oxidation process is preferably carried out in an aqueous alkaline medium.  Specified alcohols include n-butanol-1, ethylene and propylene glycols, glycol ethers such as diethylene glycol, and tetraethylene glycol, and the monoalkyl ethers of these compounds.  The examples describe the preparation of 2-ethoxy-ethoxy-acetic acid, butyric acid and the acid HOOC.CH2(OCH2CH2)2OCH2.COOH from the corresponding alcohols.
Patent GB-979835-A (GB)
Title: Lift truck
IPC: B66F9/08
Filed: 1963-10-08
Abstract: 979,835. Masted lift trucks. GRAND SPECIALITIES CO. Oct. 8, 1963 [Oct. 15, 1962], No. 39690/63. Heading B8H. A lift truck 20 has a detachable mast 50. The mast 50 comprises a pair of uprights 57, 58 joined by cross-members at either end and serving to guide a lift plate 54. An hydraulic piston and cylinder 52, 51 coact with a pair of chains 103 to lift the plate 54 which is equipped with a pair of fork arms. Supports 55 secured to the truck frame 21 receive detachable pins 65, 66 which pivotally carry the mast 50 and rotatably mount front wheels 23. The pins 65, 66 are retained in position by set-screws 70. The mast 50 is easily detachable from the truck 20 by loosening the set-screws 70 and removing the pins 65, 66. The mast 50 may be tilted about the pins 65, 66 by a screw-and-nut arrangement 78, 79 operated by a handle 48. A battery 27 provides power for an electric motor EM to operate a pump HP which provides pressure fluid for the piston and cylinder 52, 51 and for an hydraulic motor HM which drives a rear wheel 24. The rear wheel 24 and the hydraulic motor HM are mounted on a turntable 115 which may be rotated by a handle 44 for steering purposes. Forward or reverse drive is provided by a handle 45 which can only be moved from neutral when a pedal 170 is depressed. Release of the pedal 170, which is spring-loaded, returns the handle 45 to neutral so that the hydraulic motor HM then acts as a brake. A further safety feature is that the lift plate 54 can only be raised when the truck 20 is stationary.
Patent GB-1073940-A (GB)
Title: Improvements in or relating to sintered resistor bodies with positive temperature coefficients
IPC: C04B35/468
Filed: 1965-09-17
Abstract: 1,073,940. Temperature dependent resistors. SIEMENS & HALSKE A.G. Sept. 17, 1965 [Sept. 17, 1964], No. 39693/65. Heading H1K. The variation of resistivity with applied voltage of a resistor having a positive temperature coefficient with a large increase at the Curie temperature is reduced by making the resistor of doped ferro-electric substances having a Perowskite structure and having at least two major crystalline phases both of which have large increases of resistance at their respective Curie temperatures which lie on either side of the Curie temperature of the composite material. Fig. 3 illustrates some of the properties of resistors formed of mixtures of two materials having Curie temperatures of 120 and 180 C. respectively. The abscissa represents the composition of the mixture in weight per cent and the ordinate represents the " load quotient " B of the resistor defined as the ratio of the maximum resistivities at field intensities of 200 v. cm.<SP>-1</SP> and 10 v. cm.<SP>-1</SP> expressed as a percentage. The value of the " load quotient " for resistors comprising a monophasic mixture lies within area A while that for resistors comprising a diphasic mixture according to the invention lies within area B. The Curie temperature of the mixtures is given by the scale marked Tc. A mixture of 100 mol per cent BaCO 3 , 101 mol per cent TiO 2  and 0À086 mol per cent Sb 2 O 3  is ground in a ball mill with water, filtered, dried, and converted into a Perowskite structure by heating at 1000-1100 C. for four hours to produce a material having a Curie temperature of 120 C. A mixture of 84À3 mol per cent BaCO 3 , 15À7 mol per cent PbO, 101À5 mol per cent TiO 2  and 0À086 mol per cent Sb 2 O 3  is similarly treated, the temperature being 900- 1000 C., to provide a material having a Curie temperature of 180 C. The converted products are mixed in a 1:1 ratio and ground either before or during mixing under alcohol or acetone, or are mixed dry after prior comminution. A plasticizer, comprising for example 12% of a mixture of PVA, glycerine and water, is added and bodies formed by pressing into the desired shapes which are then sintered for one hour at 1300-1380 C. in air. Ohmic contacts are applied and the resulting resistors, Fig. 4 (not shown), have a Curie temperature of 150 C. and a " load quotient " of 20-30% compared with a value of 6-10% for monophasic resistors having the same Curie temperature. A material produced from a mixture of 85À5 mol per cent BaCO 3 , 14À5 mol per cent SrCO 3 , 97À7 mol per cent TiO 2 , 3À5 mol per cent SnO 2  and 0À124 mol per cent Sb 2 O 3  which has a Curie temperature of 40 C., may be mixed in a 1:1 ratio with the previously mentioned material having a Curie temperature of 120 C. The two substances used to form the resistors may be selected from doped BaTiO 3  and doped substituted BaTiO 3  where the substituents may be Ca, Sr, Zr, Sn, and Pb, and the doping substances are selected from Nb, W, Sb, Bi and the rare earths.
Patent GB-986001-A (GB)
Title: Improvements in or relating to a deodorant device
IPC: A45D34/04
Filed: 1961-11-06
Abstract: 986,001. Liquid &c. applicators. CARTER PRODUCTS Inc. Nov. 6, 1961 [Nov. 22, 1960], No. 39729/61. Heading A5R. A device for applying liquid to the skin, and comprising a ball or roller applicator member, has a normally closed valve through which the liquid passes from the container to the applicator member. This valve tends to be closed by internal pressure within the container but is opened by external pressure applied to the ball or roller member. In one form the liquid container 2 has a flexible closure member 4 which retains the ball 8 by its inwardly directed walls 10. A transverse wall 6 extends across the inner chamber, between the ball and the container, and has a central slit 14 which is normally closed to prevent the passage of liquid owing to the resilience of the material and the stiffening effect of webs 20. Owing to the arched form of this wall 6, any pressure in the container 2 caused by squeezing or rising temperature results only in the sides of the slit being pressed more firmly together. However, external pressure on the ball 8 causes it to bear on projections 22 to cause the slit 6 to open and allow the liquid to pass to the ball. A reservoir chamber, filled by tilting the appliance, may be formed adjacent to the ball or roller.
Patent GB-1100443-A (GB)
Title: 17ª‡-chloroethynyl-13ª‰-ethylgonenolone
Inventor: HUGHES GORDON ALAN
IPC: A61K31/565
Filed: 1963-08-14
Abstract: The novel 17a -chloroethynyl-13b -ethylgon-4-en-17b -ol-3-one is prepared by hydrolysis of the corresponding D 2,5(10)-3-methoxy compound with hydrochloric acid.  The 13a -enantiomer may also be present.  The steroid of the invention is stated to possess progestational, pituitary gonadotropic inhibitory and estrogen-antagonist activity, and may be made up into pharmaceutical compositions with suitable carriers.
Patent GB-1261166-A (GB)
Title: Honing tool and power drive thereof
Inventor: HELD GERHARD RUDOLF
IPC: B24B33/08
Filed: 1970-08-19
Abstract: 1,261,166. Grinding. G. R. HELD. 19 Aug., 1970, No. 40016/70. Heading B3D. A honing tool comprises a main drive shaft 27 for rotating a hone housing 30 at a first speed, and a hone drive shaft 26 connected to a series of honing wheels 52 for rotation of the wheels with respect to the housing at a second speed. The housing 30 consists of a sleeve 46 between end plates 35, 36, and a gear housing 32 adjacent the plate 35. A plurality of rods 39 are disposed between the end plate 36 and gear housing, each rod carrying a gear 56 which meshes with a gear 57 splined to the hone drive shaft 26. Each rod 39 acts as a pivot for a respective hone holder 40 located between the plates 35, 36, each holder having end plates 42, side walls 41 and an arcuate bottom plate 43. A shaft 64 is rotatably mounted between the end plates and carries a honing wheel 52, a pinion (55, Fig. 6, not shown) in one end of the shaft engaging a respective gear 56 so that when the shaft 26 is rotated, the gears 57, 56 and pinions 55 rotate the wheels 52 relative to the housing 30 as the latter is rotated by the shaft 27. The arcuate bottom plates 43 carry inwardly directed pins 44 engaging conical cams 49 on the shaft 26 whereby axial movement of the shaft rocks the hone holders about the pivot rods 39 to radially adjust the wheels. The shafts 26, 27 are connected to a planetary gearing mechanism driven from the drive shaft of the honing machine so as to rotate at different speeds.
Patent GB-1376070-A (GB)
Title: Dispensing apparatus for articles
IPC: A47F3/024
Filed: 1972-08-30
Abstract: 1376070 Dispensing articles KRAFTCO CORP 30 Aug 1972 [17 Sept 1971] 40178/72 Heading A4T [Also in Division B8] A dispenser for articles, e.g. portion packaged condiments, comprises a container or box 12, having a closed bottom 22 and hinged flap closure 24, at the top, inverted into a holder 11 formed as a standing framework preventing the container from toppling, with a lower sloping platform 34 on which the opened flap is supported to form a shoot for the packages on to a tray 36 carried by the frame. The container, or box may be formed with a sloping end conforming to platform 34 Fig. 3 (not shown), in which case a lower front portion of the container is removed to form the dispensing opening. The frames may have mounting means 56 engaging feet 30 to permit vertical stacking.
Patent GB-895529-A (GB)
Title: Improvements in and relating to portable mixing machines
IPC: B28C5/18
Filed: 1959-11-26
Abstract: 895,529. Concrete mixers. TEAGLE, W. T. Feb. 24, 1961 [Nov. 26, 1959; Jan. 28, 1960], Nos. 40233/59 and 3138/60. Class 86. In a tractor mounted rotary drum concrete mixer the drum 1 rotates in a frame 5 pivotable about a point 7 where it is supported by a strut 9 and a tie 8. The drum has fixed to its base a wheel and rubber tyre 4 which in the mixing position as shown is in driving engagement with a roller 14 driven by the power take-off of the tractor. The drum is tilted into the discharging position by the tractor hydraulic lift 24 which acts through the links 26, 21, 16 to raise the forward end of the frame 5, see Fig. 3 (not shown). The drum may be restored to the mixing position by the hydraulic lift or by its own weight assisted by that of a weight 25. The tyre and roller 4, 14 may be replaced by gears and the ties 8 may be pivoted to the hydraulic lift as shown or is a yoke member passing through the breaker 23, see Fig. 1 (not shown). The link 26 is adjustable.