baber/WOPTO huggingface dataset:
Patent GB-238411-A (GB)
Title: Improvements in or relating to machines for cutting wool
IPC: D01B9/00
Filed: 1924-10-20
Abstract: 238,411. Jackson, W. J. Mellersh-, (Severn Mills Co.). Oct. 20, 1924. Rotary blade type.-A machine for cutting long stapled wool into short even lengths has inclined blades 15, carried between end discs on a rotary hollowed drum 13, coacting with a stationary knife 12 mounted on the frame. The drum 13 is secured on a driving shaft 14, carrying a flywheel 43 and driving a shaft 30 by belt gearing 35. On the shaft 30 are pivoted angular arms 29 which support a shaft 27 driven bv a sprocket chain 38 from the shaft 30 and carrying a roughened feed roll 22 coacting by gravity with a table 21 mounted above the shaft 30. A chain adjuster 39 is mounted in the arm 29. The cut wool falls down a shoot 44. Specification 236,428, [Class 120 (iii), Yarns &c.], is referred to.
Patent GB-980922-A (GB)
Title: Transmission
Inventor: BECKER SYLVAN J
IPC: F16H61/662
Filed: 1961-07-10
Abstract: 980,922. Change-speed gear; friction clutches. BORG-WARNER CORPORATION. July 10, 1961, No. 24936/61. Headings F2C and F2D. A two-speed belt drive for a vehicle accessory such as a generator or cooling fan, comprises a pulley 26 clutched to an input shaft 14 at low engine speeds by a centrifugally disengageable friction clutch 19 and driving through belting 49 a pulley 48 fast on an output shaft 50 at a step-up ratio, and a pulley 38 connectable by an over-running roller clutch 40 to the input shaft 14 when the centrifugal clutch 19 disengages above a predetermined engine speed and driving at a reduced ratio through belting 52 a pulley 54 also fast on the output shaft, the centrifugal clutch 19 being disengaged by a weighted lever 60 opposed by pre-stressed springs 80, 82 having zero rate to give snap action. The centrifugal clutch 19 comprises a drum 30 formed on the pulley 26 engageable by a friction band 32 carried by a split spring ring 20 secured at one end 70 by a pin 22 on a drive plate 18 fast on the input shaft 14. The centrifugally responsive lever 60 pivots with a pin 62 in the drive plate 18, a cam 66 secured on the pin 62 engaging the free end 68 of the split ring 20. When the input shaft 14 is driven slowly the lever 60 is held inoperative by the springs 80, 82, but above a predetermined engine speed the lever 60 pivots clockwise and the cam 66 spreads the spring ring 20, expanding the band clutch 19 to its disengaged position allowing the overrunning clutch 40 to take up the drive.
Patent GB-1285819-A (GB)
Title: Coloured picture
Inventor: COOK GEORGE COLLIN CHARLES
IPC: B44F11/02
Filed: 1970-05-22
Abstract: 1285819 Pictures G C C COOK 25 June 1971 [22 May 1970] 24983/70 Heading B6K A coloured picture simulating an etching is produced by photographing the original to obtain a transparent negative print in black and white (defined as transparent) thereof, producing a transparent picture print from the negative and backing the positive print in either the emulsion side or the other side with a finely divided metal. The face of the picture may be finished to impart a sparkle effect by spraying the face with a matt or semi-gloss polyurethane. The picture can be backed by cardboard or plastics laminate or a metal plate. In another embodiment the metallic layer may be of different colours by e.g. spraying successively a copper and silver paint through masks.
Patent GB-1034120-A (GB)
Title: Extrusion of resins
Inventor: BAXTER SAMUEL
IPC: B29C48/07
Filed: 1963-06-24
Abstract: A process for making foamed thermoplastic synthetic resin by extrusion comprises forming a plurality of separate strands of heat-softened foamable synthetic resin under a pressure sufficient to prevent the resin foaming, coalescing the strands while still under pressure and extruding the resulting coalesced mass so as to expand it into foamed thermoplastic synthetic resin.  A foamable thermoplastic synthetic resin composition may be extruded through a die having at its inlet end a plurality of separate passages 2 communicating with a slit 3 at the outlet end of the die, the pressure within the die being sufficient to prevent the resin foaming before it leaves the slit and the dimensions of the passages 2 and of the slit 3 being such that the streams of resin issuing from the passages 2 fill the slit and coalesce whilst still in the unfoamed state.  The resin may consist of a polymer or copolymer of a vinyl or vinylidene hydrocarbon monomer, e.g. ethylene, propylene, butadiene, styrene, vinyltoluene or a -methyl styrene, or a substituted monomer such as acrylonitrile, vinyl chloride or acetate, methyl acrylate or methacrylate, or ethyl acrylate.  The foamable composition may contain as blowing agent a lower aliphatic hydrocarbon such as ethane, propane, butane, or pentane, a lower alkyl halide such as methyl chloride, trichloromethane or 1,2-dichlorotetrafluoroethane, an inorganic gas such as carbon dioxide or nitrogen, sodium or ammonium bicarbonate, or an organic nitrogen compound such as dinitrosopentamethylenediamine or barium azodicarboxylate.
Patent GB-934949-A (GB)
Title: Explosion-proof electrical dead front receptacle
IPC: H01R13/453
Filed: 1961-07-11
Abstract: 934,949. Two-part couplings. HARVEY HUBBELL Inc. July 11, 1961 [Feb. 13, 1961], No. 25139/61. Class 38 (1). [Also in Group XXXVII] A socket 1 for use in explosive gas or vapour atmospheres has laterally arcuate contacts 19 connected to supply conductors 32, 33 through microswitches 30, 31 enclosed in a sealed chamber at the rear of the insulating body 12 of the socket. Actuating spring arms 103 of the microswitches are operated by a rotatable cam 99 mounted on a shaft 97 which passes through the body 12 into an outer chamber 17 formed by an insulating cylindrical projection 11 attached to the body 12. When a co-operating plug 66 having stud contacts 73 and a stud earthing contact 74 is inserted into the chamber 17 through a suitably shaped aperture (Fig. 8, not shown), it pushes a spring-loaded sliding insulating closure 92 back allowing a keyway 111 (Fig. 9, not shown) in the plug 66 to engage a key 110 in the end of the shaft 97. In this position the contacts 19 in the socket are engaged with the contacts 73, 74 and a turning movement of the plug 66 is transmitted by the key 110 and keyway 111 through the shaft 97 to the cam which then operates the actuating arms 103 of the microswitches 30, 31 which then complete the connection between the supply conductors 32, 33 and the contacts 19. The plug is held in engagement in the socket by the action of the spring-loaded closure 92, on the end of the plug causing the contacts 73, 74 to abut shoulders 113 (Fig. 8, not shown), formed by the shape of the entry aperture in the end of the projection 11. Specification 837,189 is referred to.
Patent GB-1247515-A (GB)
Title: Novel flavor compounds and processes for producing and utilizing the same
Inventor: BRODNITZ MICHAEL HUGO
IPC: A23L27/20
Filed: 1970-05-27
Abstract: 1,247,515. Flavourings. INTERNATIONAL FLAVOURS & FRAGRANCES Inc. 27 May, 1970 [13 June, 1969], No. 25390/70. Heading A2B. Alliaceous flavouring materials are obtained by reacting a mixture of aliphatic thiosulphates (Bunte salts) with an alkali metal sulphide to obtain a mixture of aliphatic disulphides and trisulphides, the aliphatic groups being at least two different alkyl or alkylene groups of one to three carbon atoms, and the disulphide comprising 30-80 wt % of the mixture.
Patent GB-358664-A (GB)
Title: Improvement in safety razor
IPC: B26B21/24
Filed: 1930-08-27
Abstract: 358,664. Safety razors. MAGAZINE REPEATING RAZOR CO., 285, Madison Avenue, New York, U.S.A. Aug. 27, 1930, No. 25603. Convention date, Sept. 7, 1929. [Class 30.] In a repeating safety razor of the type having a stack of blades 21 in the handle, and a slidable ejecting member 13 which is first withdrawn and then returned so that its end 14 ejects a single blade through a slit 36a in an endwall 36 of the handle into a channel 42 in a shaving head 40 pivotable into alignment with the handle, means are provided to prevent jamming such as of two blades in the slit or of a single blade and the ejector end 14 therein. These means prevent the feeding of the top blade of the stack unless the ejector is fully withdrawn and also prevent such withdrawal whilst a blade is in transit to the head. The shaving head is pivoted to an extension 37 of the part 36 which is fixed at 39 to a casing member 10. The blade stack 21, carried in a detachable cornered clip 23, is housed in a holder, the sides 25 of which are slidable beneath ribs 16 on the member 10, and which is pivoted at 27 to a part 26 by which the holder is withdrawn whereupon the part 26 swings downwards and permits insertion of a fresh blade stack. The stack is pressed upwards by a spring 22 on the member 36, projecting through a slit in the clip 23 and holder 25, the spring being pressed out of action during withdrawal of the holder by the end 28 of the holder The jamming preventing means comprise a fixed slotted supporting plate 11 on which is pivoted at 44, 45, a bar 43 having an inturned end 46. The bar is pressed forwardly of the pivot by a spring finger 48, arms on which engage recesses 49 in the plate 11, and 50 in the casing member 10, thereby fixing the plate 11. The ejector 13 has a slot 18 narrower than the blades and the bar 43 and plate 11 carry pins 47, 20 respectively which engage this slot and by abutting against its inner end 19 limit outward movement of the ejector. When the ejector is withdrawn the end 46 of the bar presses forwardly on the stack and raises the pin 47 whereby the ejector is allowed to occupy its extreme blade pick-up position against the pin 20. If however the top blade has partly entered the slit, the end 46 will be caused to pivot the pin 47 into the obstructing position and the ejecting member will be unable to occupy its extreme position for picking up another blade, which condition obtains until the first blade has been fully ejected. The ejector has side walls 15 resting on the ribs 16 of the casing member 10. The holder 25 is positioned by a spring-pressed ball 30 and is prevented from being withdrawn too far by the engagement of a pin 32 carried by the holder with the end 33 of a slot in the spring 22 in which the pin can slide. In order to prevent simultaneous withdrawal of the holder and ejector there is an interlocking latch 51 slidable in a recess 52 in one of the ribs 16 and having rounded ends engaging notches 54, 55 in the ejector and slide. The parts are enclosed in the casing member 10 by a further casing member 12 pressed into position.
Patent GB-478286-A (GB)
Title: Improvements in or relating to devices for eliminating torque variations in shaft systems, more particularly for suppressing torsional vibrations in internal combustion engine crank shafts
IPC: F16F15/14
Filed: 1936-09-21
Abstract: 478,286. Torsional vibration-dampers. REED PROPELLER CO., Inc. Sept. 21. 1936, Nos. 25644 and 25645. Convention dates, Sept. 21, 1935 and Aug. 19, 1936. [Class 108 (iii)] [Also in Group XXVI] In means for eliminating torque vibrations in shafts, especially torsional vibrations in internal-combustion-engine crank shafts, an oscillating mass has a surface which rocks on a surface associated with a shaft-extension member. The coacting surfaces are relatively curved, and the centre of curvature of at least one of them is external to the confines of the mass. In the construction shown in Fig. 1, the counterweight rocks about the end of the crank cheek 16. The weight comprises two halves 20, 20a embracing the extension 22 and secured bv bolts 24. The extension has side abutments 25 against which are seated hardened rocker-plates 26 which the counterweight abuts. The counterweight has a straight face 28 and the crank shaft plates convex profiles 30, or the arrangement may be reversed, or both parts have curved surfaces. The crank extension 22 has arcuate profiles 32 to locate the counterweight against endwise motion, and clearance is provided at 36 to prevent excessive rocking motion. In the case of engines with cylinders in line and long crank shafts with spaced crank-pin masses, the crank shaft system may have more than one frequency of synchronous vibration. Masses of corresponding frequency may be used. In a carrier member, angularly disposed masses with inwardly facing abutments are provided, against which rock the faces of rocker masses pressed outwardly by springs. Circumferential movement is prevented by end profiles engaging retaining plates. In the modification shown in Fig. 6, the balance weight 220 is mounted by means of recesses containing V-shaped sides upon a plug 240 engaging a plug 242 mounted in a V-sided recess in the crank extension. The plugs have inter-engaging rocking surfaces struck from centres exterior to the weight. The weight is adapted to roll around a cylindrical element 252, and its movement is limited by the faces 258 engaging the extension end 256. In this construction, the surfaces in rocking contact lie on the shaft centre side of the gravity of the mass.
Patent GB-1015232-A (GB)
Title: Dry shavers
IPC: B26B19/12
Filed: 1963-06-27
Abstract: 1,015,232. Dry shavers. J. BRUECKNER. June 27, 1963, No. 25657/63. Heading B4B. The shaving head of a dry shaver comprises a cutter having an end face in slidable contact with a perforated shear plate and having at one or each side thereof teeth formed with a series of parallel troughs and intervening crests with planar surfaces which intersect the end face of the cutter to define a zigzag cutting edge, the or each side of the cutter being undercut and inclined at an obtuse angle to the direction of motion of the cutter. As shown in Fig. 4, the sides of an oscillatory cutter 54 are formed with inclined troughs 82 and intervening crests 84 having planar surfaces 98 which intersect the surface 90 of the end face of the cutter to form shearing edges 94, 96. The troughs and crests at their lines of intersection with the surface 90 form shearing teeth 100 presenting tooth edges 102 which provide tooth crests 104 and troughs 106. The teeth 100 co-operate with the shearing edges 74, Fig. 5, of perforations 72 in shear plate 62. In a modification, Figs. 11 to 14 (not shown), the cutter is of rotary form and in another modification, Figs. 15 to 18 (not shown), it is of reciprocating form.
Patent GB-518686-A (GB)
Title: Improvements in or relating to advertisement devices
IPC: G09F11/34
Filed: 1938-09-02
Abstract: 518,686. Moving signs. TWIDLE, A.. and ADMAG, Ltd. Sept. 2, 1938, No; 25694. [Class 3 (i)] In advertising apparatus in which a plurality of independent display panels are circulated through a closed path, the means for moving the panels comprises four vertically disposed endless belts d arranged one on each side of the panels in their upper and lower tiers. The belts d have transverse ribs f between which the vertical edges of the panels are received, the ribs being of three different heights to facilitate removal and replacement. The upper chamber b holding the top tier of panels is hinged at c to the lower chamber a holding the bottom tier. The band rollers h are bevel - geared to a single shaft k which is intermittently driven from an electric motor through a pawl rocked by a connecting rod from a toothed sector oscillated by a pitman from the power shaft u' The rollers h are ribbed 'to engage mating ribs on the inside of the endless belts d. The mechanism for raising and lowering the end panels in transfer from one tier to the other consists of a chain 3 moving in a guide 4 and reciprocated by a sprocket wheel 2 mounted on a spindle z which is given an oscillatory motion by the toothed sector aforesaid. The free ends of the chain 3 are attached to blocks 10 which slide up and down the vertical legs of the guide 4 and carry pivoted stirrup levers 8, 15 which take under the rising and falling panel and are knocked out of the way for the return passage. Pivoted hooks 39 support the end panel which about to descend, and are thrust aside by an incline on the block 10 to allow the panel to fall with the levers 8. A cam 35 on the shaft u controls the speed of progression of the panels, to hasten same during the transfer process. The panels are provided with bottom runners to ride along the tiers on rails g. Pivoted catch levers, either spring or cam actuated, are provided to engage automatically the ribs d when the upper chamber b is opened, and so ensure accurate re-meshing of the bevel gear when it is closed again, and an automatically-slid plate is provided to prevent the panels in the chamber b from falling out when fully opened. A viewing window is provided in the lower chamber, and an inspection door may control a switch which stops the motor when transfer of panels in transit between the tiers is complete. Automatic locking means may be provided which will positively prevent the upper chamber b from being opened until panels in transit have reached their tier, and the panels are notched to close switches controlling the illumination of lamps and the speed of the motor. Other forms of drive for moving and lifting the cards are specified, e.g., solenoids.
Patent GB-987014-A (GB)
Title: Improvements in and relating to nuclear reactor installations
Inventor: CROCKETT COLIN BURNIP
IPC: G21C13/10
Filed: 1962-07-04
Abstract: 987, 014. Nuclear reactors. YARROW & CO. Ltd. June 5, 1963 [July 4, 1962], No. 25717/62. Heading G6C. A nuclear reactor installation is provided with means for dispersing within the containment of the reactor a substance that reacts with elemental iodine in the event of a release of radio-active material containing radio-active elemental iodine and iodine-forming isotopes such as tellurium. The substance is preferably sodium hydroxide but may comprise one or more of the substances sodium carbonate, magnesium carbonate, potassium iodide, sodium sulphite or sodium thiosulphate instead of or in addition to sodium hydroxide. The substance may be dispersed or dissolved in a liquid, such as water, and dispersed within the containment in the form of an atomized spray, the mean diameter of the droplets being preferably not greater than 150 microns, for example in the range 50-100 microns. Preferably the floor of the containment is flooded with liquid containing the substance, on the escape of radio-active material, and if the reactor contains water it is then only necessary to add the substance to water escaping from the reactor. Liquid may then be withdrawn from the floor of the containment and re-introduced as a spray. Alternatively or in addition these may be provided liquid storage means and means for pumping liquid to the spray nozzles.
Patent GB-1243791-A (GB)
Title: Improvements relating to the dewaxing of hydrocarbon oils
Inventor: COLLIER ALAN
IPC: C10G67/02
Filed: 1968-08-29
Abstract: 1,243,791. Dewaxing oils. BRITISH PETROLEUM CO. Ltd. 17 July, 1969 [29 Aug., 1968], No. 25762/68. Heading C5E. Distillate petroleum oils boiling in the range 350-600‹ C. are dewaxed in a two-stage process comprising (i) catalytically hydrogenating the oil at elevated temperature and pressure in the presence of a Group VI A  or VIII (Mendeleef Periodic Table) hydrogenating component and a crystalline alkali metaldeficient mordenite, and (ii) cooling the partially dewaxed product in the presence of a selective solvent for the oil. Stage (i) can be effected at 450-950‹ F., 100-3000 p.s.i.g., a space velocity of 0À1-20 v/v/hr., and a gas rate of 500-30,000 SCF of hydrogen/B. The mordenite contains less than 3% by wt. alkali metal ions, and is preferably in the hydrogen form, i.e. decationized; alternatively Ca, Mg or rare earth metal ions may be substituted. The catalyst preferably contains 0À01-10% by wt. Pt or Pd introduced by ion exchange. In stage (ii) the solvent may be methyl ethyl ketone, methyl i-butyl ketone, a mixture thereof, methylene chloride, ethylene dichloride or propane, and may also contain benzene or toluene. The mixture may be chilled to - 30‹ to +40‹ F., at a solvent : oil ratio of 1-5 : 1.
Patent GB-206101-A (GB)
Title: Improvements in motor cars, motor cycles and other selfpropelled vehicles
IPC: F16D3/205
Filed: 1922-07-25
Abstract: 206,101. Hall, S. July 25, 1922. Universal joints for use in motor vehicles comprise a ball G<1> on one shaft U working in a socket G<2> on the other shaft. A number of smaller balls I fit into recesses in the ball G<1> and act as pivots for blocks J each of which slides in a groove in the socket G<2>, these blocks fitting close down on to the ball G<1> and having their outer surfaces curved as shown in Fig. 4 to allow the ball to rock in the socket. The blocks and the grooves G<3> may have flat sides as shown in Fig. 1, or they may have curved co-operating surfaces as shown in Fig. 2. The joint is kept together and lubricant is retained by means of a screw cap K. Specification 205,876, [Class 79 (ii), Motor vehicles, Driving &c.], is referred to.
Patent GB-1463412-A (GB)
Title: Pneumatic impact device
IPC: F01L21/02
Filed: 1974-06-11
Abstract: 1463412 Pneumatic impact device INST GOR DELA SIBIR OTDEL AKAD NAUK SSSR 11 June 1974 25811/74 Heading B4C [Also in Division E1] A pneumatic impact device comprises a casing 1 with a threaded member 3 therein and a ram 2 guided by the internal surfaces of the casing and threaded member and driven by air from an air line 4 such that in use air passes through channels 13, 12 in the ram and channel 11 in the front of the ram so that the ram is pushed back towards the threaded member until ports 5 are exposed to space 9 which is then in communication with the atmosphere and the ram is forced forwards by pressure in space 18 since the parts 12 at this point are closed by the threaded member. Space 17 is in communication with the atmosphere by means of passages 16. Several other modifications are described.
Patent GB-1450853-A (GB)
Title: Muscle biopsy needle
IPC: A61B10/02
Filed: 1974-06-12
Abstract: 1450853 Biopsy device K JAMSHIDI 12 June 1974 [9 Jan 1974] 25977/74 Heading A5R A biopsy device comprises a shaft 61 having a tapered, pointed puncturing tip (13) Fig. 1 (not shown) terminating in a point (14), and a tissue receiving recess 20 formed in its side adjacent the tip, a sleeve 62 slidable on the shaft between a retracted position, Fig. 5, (not shown) in which the recess is exposed by the sleeve, and an extended position, Fig. 4 in which the recess is covered by the sleeve, the sleeve having a tapered hollow tip, (16) defining a blade edge at its inner perimeter, the blade edge lying in a plane substantially perpendicular to the length of the sleeve, and a detent device to determine the extended position. The detent device comprises an aperture 64 in cylindrical shaft 61 and a spring-biased plunger 65 slidably mounted in the sleeve and biased towards the shaft for engagement with the aperture, an annular slot, the device locking the sleeve with respect to the shaft at a position where the tapered edge of the sleeve substantially forms a continuation of the taper of the tip (13) of the blade, the sleeve then being in the extended position. This taper may be conical or may have a bevel-like end. Recess 20 forms a hook with a point directed away from tip (14), the edges being sharpened to form a cutting edge which partially envelopes recess (20), and the device is used especially for obtaining muscle tissue.