baber/WOPTO huggingface dataset:
Patent GB-461843-A (GB)
Title: Apparatus for measuring the resistance of substances to grinding
IPC: G01N3/56
Filed: 1936-02-17
Abstract: 461,843. Conical mills. KUHN, I., and BRABENDER GES. Feb. 17, 1936, No. 4848. Convention date, Feb. 15, 1935. [Class 59] [Also in Group XIX] In a process for measuring the resistance to grinding of materials which can be finely divided by rough grinding, the test material is rough ground and its resistance to grinding is directly measured. Apparatus for carrying out this process comprises a normally stationary and a rotating grinding member and means connected to one of the members for giving a measure of the stress placed upon it during grinding due to the resistance of the material to grinding. A normally stationary grinding head a mounted on a shaft c is surrounded by a cylinder d into which the material is fed by a pipe z inclined oppositely to the direction of rotation of cylinder d. The latter is supported in a leather-lined frame f and is threaded at i to a cylinder h with teeth j driven from wheel k on a hand-rotated shaft l. Threaded on to cylinder h and fixed by a stud p is a part o with flange o<1> under which is a ring r: this ring is clamped to the flange o<1> by a stud t and a stop s which co-operates with a scale marked on flange o<1> and with a stop v rigid on cylinder d. When the parts are rotated and owing to the thread i the amount of rotation which stop s makes before it meets the stop v and carries cylinder d with it, determines the amount of opening g between parts a and d through which the ground material falls into a tray z. By loosening stud t and moving the stop s over its scale, the amount of the opening g may be adjusted. The shaft c of head a is anchored to one end of a spring 3 the other end of which is fixed to a stationary housing 2. Attached to shaft c is a wheel 4 geared through train 5, 6 to a fan for steadying the action. Wheel 4 also has a stop 10 coacting with a fixed stop 11. A pointer 12 on shaft c reads over a scale 13 : attached to the cover glass 14 is a manually adjustable pointer 15, 16. The material falls down pipe z until its mouth is covered by the delivered material : since this pipe is inclined against the rotation of cylinder d the latter is kept automatically full. As the hand shaft l is rotated, cylinder d coarsely grinds the material against the head a and the resistance of the material to grinding rotates the head a, stressing the spring 3 and moving the pointer 12 over scale 13. Shaft c or indicator 12 may be provided with a known recording device. The cylinder d may be the normally stationary member and the head a the rotated member.
Patent GB-786756-A (GB)
Title: Improvements in camber grinding machines
IPC: B24B5/16
Filed: 1955-02-18
Abstract: 786,756. Grinding. DRONSFIELD BROS., Ltd., and DRONSFIELD, S. W. Feb. 7, 1956 [Feb. 18, 1955], No. 4865/55. Class 60. A machine for imparting a convex or concave contour to a generally cylindrical body comprises a carriage 101, Fig. 1, arranged to slide longitudinally on a bed 102, a grinding head slide 103 mounted on the carriage for adjustment in a direction transverse of the bed by means of a rotatable cam-like element 110 which is mounted on the carriage and arranged to be rotated proportionally with the longitudinal traversing movement of the carriage, and a manually-adjustable coupling interposed between the element 110 and slide 103. The carriage 101 slides on the bed 102 in a direction lengthwise of the workpiece and carries the traversely-movable slide 103 which can be manually adjusted by a feed screw 107 relatively to a block 105 associated with the element 110. This element is in the form of an eccentric pin which upstands from a slide 115 mounted in slideways on a table formed as the head 116 of a shaft 117 carrying a wormwheel 124 meshing with a worm which is engageable by means of a clutch actuated by a knob 125 with a pinion 126 meshing with a rack 127 fixed to the bed 102. The pin 110 engages an opening in a slide block 111 mounted in a channel member 112 fixed to the block 105, and the slide 115 is adjustable on the head 116 by a micrometer screw 118 so as to set the eccentric for grinding to either cylindrical form or the desired curve and can be locked in this position by a locking bolt. In the longitudinal movement of the carriage 101, the rack 127 rotates the pinion 126 and if the clutch knob 128 is actuated to engage the clutch, the shaft 107 and eccentric pin 110 are rotated to control the transverse movement of the head 103; if, however, the clutch is disengaged, a hand wheel 128 may be operated to drive the shaft 117. The Provisional Specification describes also the control as being effected by a cam which is rotated by means of worm gearing when the carriage is moved longitudinally on the bed and engages a follower arm the opposite end of which contacts an abutment on an intermediate slide carrying the grinding head; a spring urges this slide into engagement with the follower arm.
Patent GB-1404737-A (GB)
Title: Visors
IPC: A62B18/08
Filed: 1974-02-01
Abstract: 1404737 Wipers for visors DRAGERWERK AG 1 Feb 1974 [1 Feb 1973] 04888/74 Heading A4F The inside surface of the window 3 of a visor, e.g. a breathing mask, is provided with a resilient wiper element 7 mounted on pivot pins 5, at least one of which extends through the visor wall, e.g. through or adjacent the window 3, and has a handle 8 rotatable to turn the wiper element 7 so that it moves over the window surface. Both pins 5 may have handles 8 which are rotated one after the other to operate the wiper element 7. The latter comprises a helical spring covered with wash leather, or covered with another liquid absorbent material and a further covering of a previous wiping material.
Patent GB-1456345-A (GB)
Title: Circuit for detecting the rate of increase of the speed of a  wheeled vehicle
IPC: G01P15/00
Filed: 1975-02-05
Abstract: 1456345 Anti-skid braking systems SOC ANON DBA 5 Feb 1975 [22 Feb 1974] 4945/75 Heading F2F An anti-skid braking system includes a circuit (Fig. 1) comprising a differential amplifier 28 with a first input 1 connected to a source of a voltage V representing the peripheral speed of a wheel, a second input 2 connected to a source 38/42 of a voltage U tending to increase linearly with time and a diode 40 or other unidirectional device with a threshold voltage u between the inputs 2 and 1, the amplifier 28 producing an output (V) connected to the input 2 and the circuit producing an output control signal A when the speed input signal V increases at a greater rate than the signal U. As shown the signal A is provided from an NPN transistor 32 and a PNP transistor 34 and the signal U from a constant current charging circuit 42 and a capacitor 38. Normally the voltages U and V differ by the threshold u (Fig. 2) but when the voltage V increases faster than the charging rate of the capacitor 38 as the unbraked wheel accelerates, t 1 -t 2 , the differential amplifier 28 is triggered to produce a straight edged signal T at t 2  to re-activate the brake. At t 3  the signal T is cancelled as the output U again exceeds the voltage V as the wheel is slowed. The braking system in Fig. 3 further comprises a solenoid isolating valve 10 connected by a diode D1 to the circuit, a logic control element 12 responsive to a particular value of speed decrease connected to a solenoid relief valve 14 and via a monostable 16 to the isolating valve 10, the monostable also being connected to the relief valve 14 and responsive to the output A of the above circuit. In use (Fig. 4) a signal C from the logic control element 12 actuates the isolating and relief valves 10 and 14 (D and I in Fig. 4), the monostable 16 continues their actuation until time tc when the brake relief ceases but the signal T from the above circuit maintains the isolating valve operative until time td.
Patent GB-634916-A (GB)
Title: Improvements in or relating to electromagnetic filters
IPC: G01R13/04
Filed: 1946-02-16
Abstract: 634,916. Electro-mechanical impedances. COLLINS, G., and WRIGHT, Sir C. S. Feb. 16, 1946, No. 4946. [Class 40 (viii)] An electro-mechanical filter comprises input and output coils 20, 24 mounted between soft iron pole-pieces 30 and 31 in the field of permanent magnets 10 and 11, and a coil 27 in series with coil 20 for neutralizing the inductive coupling between coils 20 and 24. Coil 27 is shunted by a variable resistance for adjustment of its effect. The coils are carried by phosphorbronze strips 19 joined to narrower screwtensioned strip 18 passing around rollers 16 and 17. The coils are provided with a dust-core of material sold under the Registered Trade Mark " Genalloy." Specifications 634,914 and 634,982, [Group XXXVI], are referred to.
Patent GB-578234-A (GB)
Title: Reclining chair
IPC: A47C1/035
Filed: 1944-03-16
Abstract: 578,234. Chairs. PAUL, E. T. March 16, 1944, No. 4957. [Class 52 (ii)] A reclining chair in which the angle between the seat and back can be varied by an alteration in the position of the user, consists of a back 16 pivoted at 28 to rear hanger bars 27, one at each side, pivoted at 26 to the chair frame 14. The seat, hinged to the back at 20, is pivoted at 25 to front hanger bars 21, one at each side, pivoted at 22 to the chair frame 14. The lower ends of the front and rear hanger bars are pivoted, at each side, to a rail 23 provided with an extension 24 carrying a foot rest. Stops 31 secured to the chair frame limit the rearward movement of the seat. A stop 30, secured to the seat, abuts against the rails 23 to limit the forward movement of the seat in which position the pivots 20 lie on the longitudinal centre lines of the rear hanger bars. The extensions 24 contact the ground when the seat is at its rearmost position.
Patent GB-475464-A (GB)
Title: Improvements in storage battery retainers and methods of making the same
IPC: H01M50/437
Filed: 1937-02-19
Abstract: 475,464. Manufacture of glass wool. CHLORIDE ELECTRICAL STORAGE CO.. Ltd. (Hall, C. A.) Feb. 19, 1937, No. 4986. Drawings to Specification. [Class 56] [Also in Group XXXVI] A retainer for the active material of accumulators consists of glass wool of which the strands are held together by being permanently bent as by the application of heat and pressure. The retainer may be made by placing glass wool between two screens and subjecting it to heat in a muffle until the glass is softened, the weight of the upper screen compressing the wool and bending the softened strands. The whole is then cooled, the strands of glass becoming permanently set in their compressed condition. The mat of glass wool may be temporarily held together by adhesive which is removed by the heat treatment or by the application of a solvent after the heat treatment. In another method of making the retainer, glass wool is loosely intermingled and passed on a conveyer through an oven and then compressed by rollers while in a softened condition.
Patent GB-1200981-A (GB)
Title: Novel bis-p-chlorophenoxy-acetic acid esters, the preparation thereof and compositions containing the same
Inventor: GRIOT RUDOLF GUSTAV
IPC: C07C69/712
Filed: 1968-01-31
Abstract: 1,200,981. Bis-(p-chlorophenoxy)-acetic acid esters. SANDOZ Ltd. 31 Jan., 1968 [21 Feb., 1967], No. 5027/68. Heading C2C. Novel bis-(p-chlorophenoxy)-acetic acid esters of the general formula wherein R 1  is a piperidino or cyanomethyl radical or a di-(carbalkoxy)-methyl radical in which the alkoxy groups contain 1 to 4 carbon atoms, are prepared (a) when R 1  is a piperidino radical, by reaction of bis-(p-chloro-phenoxy). acetyl chloride or bromide with 1-hydroxypiperidine or an alkali metal salt thereof or (b) when R 1  is a cyanomethyl radical or a di- (carbalkoxy)-methyl radical in which the alkoxy groups contain 1 to 4 carbon atoms, by reaction of bis-(p-chlorophenoxy)-acetic acid or an alkali metal salt thereof with a compound of the general formula X-CHYZ, wherein X is a chlorine or bromine atom and either Y is a hydrogen atom and Z is a cyano radical or Y and Z are each α-COOR 2  radical, in which R 2  is an alkyl radical of 1 to 4 carbon atoms. Pharmaceutical compositions having hypocholesteremic activity comprise, as active ingredient, a bis-(p-chlorophenoxy)-acetic acid ester of the first general formula above in association with a physiologically acceptable carrier or diluent, and may be administered orally.
Patent GB-621356-A (GB)
Title: Improvements in or relating to seats
IPC: A47C7/22
Filed: 1947-02-21
Abstract: 621,356. Upholstery. WINGFOOT CORPORATION. Feb. 21, 1947, No. 5120. Convention date, Sept. 20, 1946. [Class 52 (iv)] A seat particularly a seat back comprises a flexible sheet 4 held on the curved frame and supported by one or more curved strips of rubber 7. As shown the flexible sheet 4 is connected directly to the top portion 3 of a curved back frame 2, 3 and the rubber strips 7 are supported in channel members 8 welded or otherwise secured to the top and bottom members of the frame. Padding &c. and a finishing cover may overlie the sheet 4 but as shown a finishing cover 9 envelopes the frame, and flexible sheet 4 directly. The flexible sheet 4 is connected laterally to the frame by springs 5.
Patent GB-138453-A (GB)
Title: A perforated shovel applicable for sifting cinders and the like or for clearing drain gullies
IPC: F24B15/08
Filed: 1919-03-01
Abstract: 138,453. Duckworth, T. March 1, 1919. Shovels and scoops.-A perforated shovel for sifting cinders, clearing drain gullies, &c., is provided with movable appliances for closing the mouth and the perforations. The mouth is closed by a fence k pivoted on screws g screwed into studs in dents in the sloping wails of the shovel a. The fence is normally held out of operation by an adjustable spring catch m which may be controlled by means of a wire o. When the catch is released, the fence is turned into the operative position by springs surrounding the screws g. The perforations in the bottom of the shovel are closed by a perforated slipper plate b supported by an inturned front lip and by slotted brackets engaging by a perforated slipper plate b supported by an inoperative position by an adjustable spring i, but is pushed back, as the fence k is thrown forward, by the engagement of a projection with a pin l. The plate b may be dispensed with, and the handle arranged at a different angle.
Patent GB-747287-A (GB)
Title: Improvements in or relating to the production of boron
Inventor: HAAG HEINZ
IPC: C01B35/02
Filed: 1954-02-22
Abstract: Boron is produced by the reduction of an alkali metal borofluoride, e.g. potassium borofluoride, with an alkali metal, e.g. sodium, at a pressure of 0.1 m.m. of mercury or less and at a temperature of 400-600 DEG C. or more.  The reactants may be placed together in a single boat-like vessel, e.g. in layers, or may be placed in separate vessels.  The alkali metal may be present in a 5-10 per cent excess. The resulting boron may be purified by treatment successively with hydrochloric acid and hydrofluoric acid, followed by heating in a high vacuum furnace at 1000-2000 DEG C. It may be further purified by a further treatment with hydrofluoric acid.  U.S.A. Specification 2,465,989 is referred to.
Patent GB-1196612-A (GB)
Title: Improvements in doctors for paper making and like machines
Inventor: BOYLAND ALBERT HENRY JOHN
IPC: D21G3/00
Filed: 1968-02-01
Abstract: 1,196,612. Doctor. VICKERYS Ltd. 3 May, 1968 [25 May, 1967; 1 Feb., 1968], Nos. 24451/ 67 and 5176/68. Headings D2A and D1L. A doctor comprises a holder 12, a doctor blade, 11A, having its rear end accommodated in the holder, the front end bearing against a roll, 10, and a resilient pressure plate 16 bearing against the blade, wherein the pressure plate bears against the face of the blade which contacts the roll, and at a location behind a nose 17 on the holder which bears against the other face of the blade. The arrangement may be made suitable for use with either a composition blade or a metal blade by the provision, when a metal blade is used, of a removable packing ,piece 29 inserted between the pressure plate and a lip on the bolder which faces the side of the pressure plate remote from the holder. The nose 17 may make line contact with the blade, and the holder may have a lip 19 which makes line contact with the side of the pressure plate (Fig. 1, not shown) or with the side of the packing piece, if fitted (as shown).
Patent GB-671156-A (GB)
Title: Improvements in or relating to motion picture projectors
IPC: G03B21/43
Filed: 1950-03-01
Abstract: 671,156. Kinematograph projectors. KODAK, Ltd. March 1, 1950 [March 1, 1949], No. 5199/50. Class 97 (i). The shafts of feed and take-up spools are connected to separate electric motors tending to drive them in opposite directions, the feed spool motor being energized at reduced voltage and the take-up spool motor at full voltage during normal winding, the feed spool motor being energized at full voltage for rewinding, the take-up spool motor being then de-energized. In the described embodiment the feed spool spindle is belt-driven from a motor mounted in the arm carrying the spindle. Fig. 2 shows the arm carrying the take-up spool spindle 22. The spindle is mounted in bearings in a yoke 31, pivoted at 32, and carries a gear 39 engageable with a gear 40 on the spindle of a motor on a plate 43 mounted in guides 44. The plate is slidable by a cam 47 working in a slot 48 and rotatable by an external knob 45. Movement of the plate to disengage the gears actuates a micro-switch 83. At the same time a cam surface 92, rigid with the plate 43, and on which the yoke 31 rests, lowers the yoke so that a brake drum on the spool spindle is lowered on to a fixed brake shoe, the frictional force thus depending on the weight of the spooled film. The projector control switch has two operative positions. In the first, both spool motors are energized at reduced voltages through resistances to tauten the film after threading. In the second, the main motor, driving film sprockets and intermittent feed, is energized and the energization of the take-up spool motor increased to its full value. In the " off " position of the control switch all the motors are de-energized, but the feed spool motor is again fully energized by the micro-switch 83 for re-winding when the knob 45 is rotated to disengage the gears 39, 40.
Patent GB-773591-A (GB)
Title: Improvements in or relating to direction indicators for vehicles
Inventor: THOMAS HUGH ELLIS
IPC: B60Q1/34
Filed: 1954-02-22
Abstract: 773,591. Road-traffic signals on vehicles. VULGARIAN ENGINEERS, Ltd. Feb. 22, 1955 [Feb. 22, 1954], No. 5207/54. Class 118 (2). A direction indicator suitable for a pedal cycle comprises a rigid strip of metal forming a closed loop, and an indicating member pivotally mounted in the loop so as to swing on either side thereof, which loop and indicating member are provided with corresponding contours so that the latter may lie snugly within the former. The ends 12, 13 of a metal strip bent into a loop having the same shape as that of a translucent indicator 11 overlap one another and accommodate an adjustable socket 14 for a control cable 15. The indicator 11 is pivoted between a pin 43 provided in the bottom part of the metal loop frame and on an adjustable threaded plug 28 in the upper part of the frame. The plug 28 has a conical end engaging a conical recess 32 in the metal plate 30 closing the top of translucent trough-shaped member 11. The control cable 15 passes round and is secured to a pulley 46 carried by pivot pin 43. A pin 48 extends from pulley 46 to engage a hole in the bottom of indicator 11. The loop frame is provided with curved clip members 61 and 62 for securing it to the rear mudguard of the cycle. The cable 15 also passes around another pulley inside a casing 52 having a clip 53 for attachment to the handle-bars of the cycle. This pulley is rotatable by means of a lever 58. A battery 26 is carried on top of the loop frame and is connected to a contact pin 25 which extends through the hollow centre of plug 28 to the inside of indicator 11. The end of contact pin 25 is flattened at 33 and lies between the arms of a springy metal fork member 34 which is connected to one side of a lamp 40 carried within indicator 11. When the indicator arm 11 is swung to either side of the loop frame by operation of lever 58 contact between the fork member 34 and flat end 33 of contact pin 25 causes lamp 40 to light up, the return circuit being through the metal plate 30 and the frame of the device. The loop frame may also carry the normal rear lamp and reflector.
Patent GB-562227-A (GB)
Title: A handle for cups and like receptacles
IPC: A47G23/02
Filed: 1943-04-01
Abstract: 562,227. Cup &c. handles. REED, S. April 1, 1943, No. 5212. [Class 66] [Also in Group XXV] A handle for attachment to cups, &c. comprises a pair of spring clips E adapted to engage the wall of the vessel and a handle portion D of ring form. The device may be formed in a single piece as in Fig. 6 either by slitting and bending a strip of sheet metal, or from plastic material, or as shown in Fig. 9 it may be made from separate portions of wire or strip soldered &c. together. When of metal the device may have a covering of plastic material.
Patent GB-1452793-A (GB)
Title: Energy metering circuits for capacitor discharge and other ignition systems
IPC: F02P3/08
Filed: 1974-02-05
Abstract: 1452793 Ignition systems SYSTEMS GO PTY Ltd 5 Feb 1974 [7 Feb 1973] 5302/74 Heading F1B In an ignition system, such as the capacitor discharge system shown in Fig. 6, a control circuit receiving a command signal from the engine fires the SCR to discharge capacitor D-C through the ignition coil T, and at the same time switches on a switch XYZ to initiate current flow through an inductor L. The rise of positive voltage across the inductor L is monitored by a secondary winding L 2  and fed as a corresponding rise of negative voltage to an integrating circuit D2, R, C, the resultant voltage across C being a measure of the magnetic energy stored in L. When the voltage across C reaches a valve indicative of the desired value of the energy stored in L, it turns on a 4-layer diode SUS which turns off the switch XYZ. The polarity of L2 reverses, and the energy stored in L is delivered to D-C via L 2  and D 1 . The switch XYZ is shown as a transistor having its base regeneratively coupled to its emitter via an autotransformer AT, but may be any three-terminal or four-terminal switching device, such as a gate turn-off switch. In a modification, Fig. 7 (not shown), the SCR is omitted, the junction between D 1  and D-C is connected to X and a blocking diode is interposed between L and X, whereby XYZ additionally performs the function of the SCR. The ignition system may be of the type in which the energy stored in L is discharged directly to the coil T when XYZ is switched off.
Patent GB-201192-A (GB)
Title: Improvements in and connected with electric heating devices
IPC: H05B3/16
Filed: 1922-02-23
Abstract: 201,192. Schattner, E. Feb. 23, 1922. Toasting-apparatus.-A W-shaped bread carrier l with handle m is supported by the top frame member, and depends on both sides of an electric heater a.