baber/WOPTO huggingface dataset:
Patent GB-563868-A (GB)
Title: Improvements in hair pins
IPC: A45D8/08
Filed: 1943-03-02
Abstract: 563,868. Hair pins. WALWYN, F. March 2, 1943, No. 3447. [Class 131] A hair pin has its closed end a turned down and bent over to one side to form a hook which extends over a leg d so that the hair which enters the pin can pass into the hooked end and so prevent accidental withdrawal. A kink e may be provided.
Patent GB-130642-A (GB)
Title: Improvements in and relating to Dynamo Electric Machines.
Inventor: PLAISANT GUSTAVE
IPC: H02K57/00
Filed: 1917-06-22
Abstract: 130,642. Plaisant, G. June 22, 1917. Homopolar machines ; armatures and field magnets; windings. -To generate asymmetric electromotive forces of the general character shown in Fig. 10 for engine ignition, wireless telegraphy, &c., a ring or hollow drum armature c<1>, Figs. 1 and 2, is situated in a radial magnetic field produced between a small inner pole a and a large outer pole b of the field magnet, one or both of the poles being discontinuous in the circumferential direction. The armature c' is stationary, while the pole a is connected to the rotating shaft e' by means of an arm e. The large pole may be arranged inside and the small pole outside the armature. The excitation may be effected by a winding d either mounted on the arm e, Fig. 1, or placed at the base of the large pole, Fig. 2; in the latter case, the arm c is of non-magnetic material. The larger pole b may be the movable element, or both poles may rotate in the same or in opposite directions. The large pole may be of circular form or of crescent outline, as indicated by dotted lines b<2>. The armature c<1> may be wound in accordance with the simple diagrams of Figs. 3, 4, and 5, a complete winding consisting of a number of such elements connected, for example, as shown in Fig. 9. The ends of the windings are joined to slip-rings. The curves A, B, C of Fig. 10 illustrate wave-forms obtained with an ordinary gramme, ordinary drum, and the 8-winding shown in Fig. 3, respectively. Specification 26177/12 is referred to.
Patent GB-176338-A (GB)
Title: Improvements in pneumatic hammers
IPC: B25D9/14
Filed: 1922-02-07
Abstract: 176,338. Chicago Pneumatic Tool Co., (Assignees of Stevens, E. W.). Feb. 28, 1921, [Convention date]. Percussive hand tools.-In a pneumatic hand hammer particularly applicable to riveting, the exhaust ports 20 in the cylinder communicate with passages 23 which lead part of the air exhausted to the front end of the cylinder, and discharge it in proximity to the clip 9 which holds the tool in place, whereby the clip and tool are cooled. The remainder of the exhaust escapes along the side of the tool through an opening in the collar 21. The Specification as open to inspection under Sect 91 (3) (a) states that the differential piston valve 6 in the position shown in Fig. 4 admits live air behind the piston through ports 27, 7, and as soon as the rear end of the piston clears the passage 18, the valve is reversed by pressure on the face 33, together with the pressure of live air on the face 32. This reversal of the valve communicates pressure to the forward end of the piston through ports 27, 15, 13, 12, and 16, which pressure drives the piston back. After the piston has covered the passage 18, the cushioning pressure in the chamber 10 again reverses the valve. This subject-matter does not appear in the Specification as accepted.
Patent GB-1462621-A (GB)
Title: Hydraulic units
IPC: B66F5/04
Filed: 1973-01-24
Abstract: 1462621 Hydraulic jacks TANGYE EPCO Ltd 8 Feb 1974 [24 Jan 1973] 3512/73 Heading F1D A hydraulic unit, Fig. 1, for operating a jack, extends rapidly until the load is contacted and then extends slowly with increased force. Liquid is drawn from a reservoir 34 by a pump 39 and passes past balls 36, 37 into a chamber 24 from which it extends a piston 62. The latter moves the cylinder 10 relative to the piston 14 until an increase in pressure occurs due to the load being contacted. During this extension liquid is drawn into a chamber 29 from the reservoir 34 through a check-valve 28. When pressure in the chamber 29 reaches a predetermined value a spool 48, Fig. 2, moves against a spring 49 and allows a ball 46 to  lift off a seat in a port 45. When this occurs liquid from the pump flows through the port 45 and passages 61,31 into the chamber 29 to extend the unit. Pulling a rod 51 outwards allows liquid to return to the reservoir from chamber 44 through bores 56, 57, 52 and 59. If the operating pressure rises too high the rod 51 is moved thereby so that liquid can escape through the passage 59.
Patent GB-657188-A (GB)
Title: Road dolly for trailers
IPC: B60S9/16
Filed: 1949-02-09
Abstract: 657,188. Vehicle suspension. CONLEY. J. T., and TRUE, O. D. Feb. 9, 1949, No. 3574. [Class 108(ii)]  In a trailer dolly the caster wheel mounting is carried by a vertical cylindrical member, which telescopes and swivels within a vertical mounting member, a shock-absorbing helical spring being disposed within the cylindrical member with one end bearing on such member and its other end abutting an independent and adjustable piston carried by the mounting member. By adjusting the piston the spring compression may be varied and/or the height of thedolly altered. Such adjustment may be ejected manually or hydraulically. As shown in Figs. 1 and 2, one or a pair of caster wheels w are  mounted in a yoke comprising legs 10a and an angle bolster 10 to which is fixed a vertical cylindrical switch sleeve 9.The sleeve 9 is rotatably and slidably carried by the mounting sleeve 6 which is fixed to the plate 5 secured to the draw bar and is further fixed by a U-bolt 7 secured to a channel member 8 fast with the draw bar. The sleeve 9 slides over piston 12 which  is vertically adjustable by screwed rod 13 and handle 13a, a locking nut 14 being provided. The shock absorbing spring. 11 is located between the piston and the bottom of sleeve 9. By adjusting the height of piston 12 the proportion of the trailer load carried by the dolly whilst towing can be varied. When the trailer is unhitched, adjustment of piston 12 raises or lowers the draw bar. The space beneath the piston 12 may be filled with fluid and the piston provided with holes 12a, whereby a hydraulic damping effect is achieved. In the modification shown in Fig. 3 the piston 22 may be raised or lowered by a hydraulic ram 27, hydraulic pressure being supplied through pipe 26 from a pump or master cylinder. The piston may be retained in the desired position by closing valve 25a and tightening a clamping ring 28 on to the ram 27. In both forms means are provided to prevent the sleeve 9 dropping out of its mounting sleeve, comprising a spring loaded detent 15, Fig. 2, which engages an annular shoulder 9a on the sleeve 9 upon excessive longitudinal movement thereof.
Patent GB-919765-A (GB)
Title: Improvements in or relating to warning devices
Inventor: BASHAM EDGAR WILLIAM JAMES
IPC: G08B21/04
Filed: 1960-02-02
Abstract: 919,765. Transistor circuits. NORMALAIR Ltd. Jan. 11, 1961 [Feb. 2, 1960], No. 3575/60. Class 40 (6). [Also in Groups VI, XXI and XXXVIII] An audible warning device automatically gives a signal if no motion of the device is detected during a predetermined period. The switch contacts S1, which are normally held open by the insertion of a key (not shown) into the container (not shown) housing the device, are closed by removal of the key. The movement sensing means 2 maintains a circuit between its terminals as long as it is in motion, but open-circuits them when it is at rest. In the latter condition the capacitor C1 is charged through resistor R1 and provided the means 2 remains at rest for about 40 seconds the potential at the base of transistor 3 becomes such that the transistor conducts and operates relay 4, which locks up over contacts S2 and applies operating potentials via S3 to multivibrator 7 which intermittently energizes the electric horn 5. The horn continues sounding until relay 4 is released by re-insertion of the key. The horn may be sounded, if desired, by manual closure of switch S4, independently of the condition of means 2. In a modification (Fig. 1, not shown), contacts S3 complete a local circuit for continuous sounding of horn 5. The device may be carried by a fireman or rescue worker and will signal the fact that he has not moved for a predetermined time.
Patent GB-648962-A (GB)
Title: Improvements in or relating to electric discharge tubes
IPC: H01J41/20
Filed: 1947-02-07
Abstract: 648,962. Discharge apparatus. PHILIPS LAMPS, Ltd. Feb. 7, 1947, No. 3673. Convention date, March 11, 1944. [Class 39 (i)] In an electric discharge tube a refractory body or bodies covered with gas absorbing material is or are secured to an artificially cooled anode in such a way that the thermal conductance between the refractory body or bodies and the anode is small and the gas absorbing material is heated by electron bombardment to a temperature at which it acts as a getter to the tube. The gas absorbing material may be, for example, zirconium, thorium, titanium or tantalum, the refractory body of molybdenum, tungsten or tantalum and the anode of copper. The gas absorbing material may be attached to the refractory body by sintering. A zirconium covered split molybdenum cylinder 6, Fig. 1, provided with internal projections 7, is clamped around the liquid-cooled anode 1, or a smooth split cylinder 10, Fig. 3, may grip an anode 8 formed with grooves 9. The refractory body may be in the form of a helix and the anode provided with spiral grooves in the opposite sense. One or more rods may be laid in grooves of the anode and tied on to it, for example, with a few turns of zirconium wire, the area of contact being relatively small. In a velocity modulation tube a split molybdenum cylinder 13, Fig. 5, is held in a recess inside the liquidcooled anode 15. The cylinder may be provided with projections, or'the grooves may be formed in the anode. By displacement of a magnet coil 14 the distribution of the electrons as between the cylinder 13 and the rear wall 16 of the anode may be controlled. Preferably, the cylinder 13 is red-hot during operation.
Patent GB-216821-A (GB)
Title: Improvements in or relating to devices for opening tins, cans or the like
IPC: B67B7/46
Filed: 1924-02-12
Abstract: 216,821. Schaanning, A. M. S. Feb. 12, 1924. Opening by cutting.-The under jaw of a canopener of the " pliers " type is formed in two branches spaced apart and each comprising a part 4, adapted to engage under the seam 3 of a can, and a elaw-like member 5 engaging over the seam. The blade 7 on the upper jaw moves between the arms of the under jaw. The lever arms are fitted with an opening spring 8, and means, such as a spring member 9 formed with a projection 10 adapted to engage the edge 11 of an opening 12 formed in the upper lever arm, are provided to limit the opening of the jaws after the initial cut has been made, so that the cutter blade does not slip out of the cut.
Patent GB-907015-A (GB)
Title: Improvements in the polymerisation of cyclic amides
IPC: C08G69/20
Filed: 1960-02-02
Abstract: A process for making a polyamide from a cyclic carboxylic acid amide containing more than six ring atoms comprises the steps of continuously supplying to a reaction vessel the cyclic carboxylic acid amide monomer, lithium hydride as a polymerization catalyst and 0,05 to 1,0 mol. per cent (based on the amide) of a chain stopper comprising a carboxylic acid amide in which the amide group is not an integral part of a ring structure, subjecting the mixture to polymerization conditions and continuously withdrawing polyamide from the reaction vessel.  Specified cyclic amides are S -caprolactam, cyclopentanone isoxine and methyl cyclohexanone isoxine.  Specified chain stoppers are benzamide, acetanilide, acetamide, 1:6-(monoacetylamino) hexane, dimethyl formamide, formamide, N-methyl benzamide, 4-methyl benzamide, 4-chlorobenzamide, 1:4-(monoacetylamino)-butane, adipamide and terephthalamide.  The examples describe the polymerization of S -caprolactam in the presence of lithium hydride and:- (I) benzamide and (III) acetanilide.
Patent GB-952306-A (GB)
Title: A razor blade sharpening device
IPC: B24D15/08
Filed: 1963-01-30
Abstract: 952,306. Sharpening razor blades. W. R. G. KNAPP. Jan. 30, 1963, No. 3787/63. Heading B3D. A sharpening device for razor blades comprises a sheet 1 of compressible material, such as felt, bent into two overlying leaves which are connected at a hinge so as to have a generally V-shape and are each treated on its inner surface with an abrasive subatance 6 and provided on its outer surface with a substantially rigid reinforcing plate 3 extending over the whole of the leaf except at the hinge and the free edge 4. Each of the plates 3, which may be of mild steel, is glued in position with the interposition of a flexible backing 2 and a piece 5 of flexible material is also glued over the hinge joint.
Patent GB-143296-A (GB)
Title: Improvements in or relating to force-feed lubricators
IPC: F16N13/10
Filed: 1919-02-15
Abstract: 143,296. Bliss, J. Feb. 15, 1919. Auxiliary actuating gear; springs; cam-actuated pumps; stroke, varying; assembling parts; buckets; mountings; single-acting suction-valveless bucket pumps pumps in series; suction pipes; suction reservoirs.-A lubricator of the multi-plunger type comprises a reservoir A in which is mounted a driving-shaft H carrying as many cams as there are pumps. Each pump unit is separately and detachably mounted on the top of the reservoir by means of internal bolts and nuts &c., so that each may be removed without disconnecting anything inside the reservoir or affecting the operation of the other units. In one form, each cam acts on a cross-head c<1> carried by a spring-pressed sliding member C and connected to two bucket plungers E, D provided with valves E<2>, D<3>. The plunger E carries an extension E<1> serving as a suction pipe, and delivers past a valve E<3> to a sight chamber F<1>. The oil passes through a duct F<2> to an annular space in the plunger D, and thence past the valves D', G to the delivery pipe G<1>. The reservoir has a strainer J<1> held in place by flanges J<2>, J<3>. The pump may be hand-actuated by means of an extension of the member C, and the stroke may be adjusted by means of a spring-pressed screw cap C<4>.
Patent GB-763475-A (GB)
Title: Improvements in or relating to electric actuators
Inventor: HURST WILLIAM FREDERICK FORRES
IPC: H02K11/00
Filed: 1954-02-09
Abstract: 763,475. Automatic speed control systems. TEDDINGTON AIRCRAFT CONTROLS, Ltd., [formerly TEDDINGTON CONTROLS, Ltd.]. Feb. 9, 1955 [Feb. 9, 1954], No. 3825/54. Class 38 (4). A D.C. series motor coupled through reduction gearing to operate, for example, a hot air valve in an aircraft pressurization system, has an armature 6, Fig. 5, and is run in one direction or the other by operation of a change-over switch 1 to connect the appropriate field winding 3 through a brake winding 5. A switch 12 is placed in the position shown for fast running, but is changed over to introduce a series resistor 9 shunted by centrifugal governor-controlled contacts 7 when constant slower speed running is desired. Under the latter conditions an electromagnetic clutch 11 is energized to couple the centrifugal governor to the motor and the clutch winding also acts as a diverter to assist in the reduction of speed. Motor travel in either direction is limited by switches 2 co-operating with indicator lamps 4.
Patent GB-1147301-A (GB)
Title: Gearshift lever assemblies
Inventor: LUSTED ARTHUR WYNDHAM
IPC: B60K20/02
Filed: 1967-01-26
Abstract: 1,147,301. Change-speed control. VAUXHALL MOTORS Ltd. 21 Dec., 1967 [26 Jan., 1967], No. 3884/67. Heading F2D. In a motor-vehicle change-speed control having a gearshift-lever 10 pivotally mounted by an intermediate ball-and-socket connection 12, 24, in a turret housing 14 of a gear-box 18 (not shown), the metal ball 12 of the lever 10 is spherically seated in a one-piece annular polyurethane socket 24 which is a snap on fit on the pivot ball 12 and retained within the turret 14 by an external flange 34 on the socket engaging a groove 22 in the turret housing 14 such that the socket 24 is held seated with slight pressure against an internal turret flange 16. An axial projection 36 on the socket 24 engaging a slot 38 in the internal turret flange 16 (Fig. 4, not shown) prevents relative rotation between the turret 14 and socket 24, the latter 24 of which may additionally be formed with a pin 40 engaging a slot 42 in the ball 12 to similarly prevent relative rotation therebetween. The pin 40 may be formed integrally with the plastics socket 24 or may be a metal pin moulded in the socket which additionally is formed with a lubricant reservoir 30 and has a flared mouth 32 to facilitate the snap-fitting of the socket 24 to the ball 12. The turret 14 is similarly chamfered at 20 to facilitate fitting of the ball- and-socket assembly. In addition to the external flange 34, the socket may have one or more lateral projections which are axially spaced from the flange 34 and fit into respective retainer recesses in the turret housing.
Patent GB-1454045-A (GB)
Title: Releasable heel binding for skis
IPC: A63C9/00
Filed: 1974-01-28
Abstract: 1454045 Releasable heel binding for skis COBER FABBRICA ARTICOLI SPORTIVI SPA 28 Jan 1974 [15 Feb 1973 25 Sept 1973] 03885/74 Heading A6D A releasable heel binding for skis comprises an elongated body 9 connected to the ski; a displaceable unit 12 sliding longitudinally relative to body 9 the displaceable unit including a displaceable body 13, a pressure lever 14 acting on the heel of a ski-boot and a coupling lever 15 acting on the pressure lever; a compression spring 25 Fig. 5 or a flexion spring 56 Fig. 6 (not shown) interposed between the fixed body and the displaceable unit and a stop 10 connected to the fixed body for engagement by the coupling lever after an initial clearance has been exceeded. In an embodiment the body 9 is pivotably connected by means of a U-shaped stirrup 1 to a plate 3 which pivots on the ski 5. The displaceable unit 12 which slides on the fixed body also slides longitudinally on the shanks of the stirrup on bearing surfaces 13b of guides 13a which project from the displaceable body 13 on both sides of the shanks. Pressure lever 14 is hinged on the rear of the displaceable body and carries at it's front end a roller 18 that presses against the ski-boot heel, the pressure being applied by the compression spring 25 acting between the fixed body and the coupling lever 15 pivoted on the displaceable body. When the ski-boot is in position the spring 25 presses the coupling lever into a locking position in which a tooth 21 on this lever engages a pin 19 near the upper end of the pressure lever. The coupling lever is pivoted on a shaft 20 on the displaceable body at a point below the axis of the compression spring which creates a small torque tending to keep lever 15 coupled to the pressure lever 14. This arrangement allows the heel a limited movement in normal use but if the upper limit is exceeded the displaceable body is pushed backwards until the roller 23a at the lower end of the coupling lever engages the stop 10a, further movement of the heel causing the lever to rotate in the direction of the arrow B Fig. 5 until the tooth 21 leaves engagement with pin 19. When the pin 19 has passed beyond the tooth the pressure lever rises releasing the heel from roller 18 and the coupling lever is then thrust forwards by the spring 25. The pin 19 then rests on the inclined surface 21a which urges it upwards forcing the lever 14 into a raised position allowing the heel to be removed as shown by the broken lines Fig. 5. The heel binding may be opened manually by exerting a backward pull on the strap 26 by means of the eyelet 26b. In another embodiment by some modification of the components a flexion spring may be used in place of the compression spring, the mode of operation being similar to that of the first embodiment.
Patent GB-524754-A (GB)
Title: Electric motors for razors or other hand-held appliances
IPC: B26B19/28
Filed: 1939-02-06
Abstract: 524,754. Motors. CASNER PATENTS, Inc. Feb. 6, 1939, No. 3904. Convention date, Feb. 12, 1938. [Class 35] The electric motor for a razor or other handheld appliance comprises a frame consisting of a field member 3 and a shaft-supporting tube 4, the field member having polar surfaces 15 extending in the opposite direction to the tube, the armature 6 rotates between the pole surfaces and its shaft 5 has means such as a cam for operating a circuit breaker 7. The tube is cut away at 4' to allow one of the contact-carrying arms of the circuit breaker to bear upon cam surfaces cut in the shaft. The field frame is held at three points in a two-part casing 1 which may be made of a condensation product, by means of ledges 2 and projections 2a engaging notches 3a in the magnet poles and by a seating 2c for the tube 4. A wheel 6<SP>1</SP> projecting outside the casing is provided on the shaft for starting by hand. A condenser 10 and a resistance 9 shunted across the circuit breaker in series with the field coils 8 are mounted on the field frame by clips 11. The tube 4 has at its ends shaft-bearing sleeves which do not require lubrication.
Patent GB-790039-A (GB)
Title: Precipitation of organic acid esters of cellulose
IPC: D01F2/30
Filed: 1956-02-08
Abstract: <PICT:0790039/IV (a)/1> Organic acid esters of cellulose, especially those having a D.S. above 2.5, are precipitated in an easily washable form from their solutions, particularly their esterification solutions, by extruding the solution in the form of continuous filaments, partially hardening the filaments with a liquid non-solvent for the cellulose ester, cutting the filaments into short lengths while they are still not completely hardened but after they have become sufficiently hardened to prevent cohesion or coalescence between them during cutting, and further hardening the resulting short lengths of filaments by means of a non-solvent for the cellulose ester.  As shown, an acetylation solution comprising cellulose acetate of acetyl value 60 per cent dissolved in acetic acid is pumped through a conduit 11 and extruded through an elongated perforated plate 12 in the form of a warp of continuous filaments into a tank 14 in which the filaments fall through the air for 1 foot and then fall through a depth of 4 feet of 12-15 per cent aqueous acetic acid on to an endless belt 15 passing round a roller 16 and a driven roller 17.  The belt is provided with a series of upstanding members 21 adapted to engage the filaments and prevent them from slipping.  The filaments are carried, still in a more or less parallel formation, through and out of the aqueous acetic acid until they finally fall through a hopper 22 on to a cutter 23 comprising a shaft 26 rotated at 1,500 r.p.m. and carrying a roll 27, from the periphery of which there extend radially outwards elongated cutter bars 28 co-operating with a stationary cutterbar 29.  The filaments, cut into 1-inch lengths, fall into a tank 32 provided with a longitudinal rotatable driven shaft 33 to which are secured paddles 34 which cause the cut filaments to travel along the tank. Aqueous acetic acid continuously enters the tank 14 through the inlet 24, flows under the baffle 25 and overflows into the tank 32, in which the hardening of the cut filaments is completed. Finally the filaments are separated from the aqueous acetic acid and washed with water in counter-current until they are free from acid.