baber/WOPTO huggingface dataset:
Patent GB-1502988-A (GB)
Title: Frequency synthesizer
IPC: H03B19/00
Filed: 1975-04-18
Abstract: 1502988 Frequency synthesizer PHILIPS ELECTRONIC & ASSOCIATED INDUSTRIES Ltd 18 April 1975 [22 April 1974] 16077/75 Heading H3A A frequency synthesizer for producing a frequency f 0  which can be given a plurality of values spaced apart by uniform amounts f r , comprises circuits I, II each containing a voltage controlled oscillator 1, 12 and a frequency divider 4, 14 the division factors N 1 , N 2  of which are adjustable in equal incremental steps, and each receiving a reference frequency f r1 , f r2 ; the circuits are connected by a frequency translation device 11 comprising a fixed divider 10 of factor A and a mixer 9, the reference frequencies differing by one of f r1 , f r2  divided by A. Simultaneous stepping of N 1  and N 2  by unit amounts results in the output frequency f 0  from oscillator 1 changing in steps equal to the said one of f r1 , f r2  The output frequency and the frequency increment is In the example shown, a desired frequency is selected by means of a device 20 which feeds a binary channel-number (S 7 ,...., S 0 ) to a logic circuit 21, Fig. 6 (not shown). This generates the corresponding number pair N 1 =(x 6 ,..., x 0 ) and N 2  = (y 7 ,..., y 0 ) which are such that, for channels 1-80, N 2  - N 1  = 308 and for channels 81-200, N 2  - N 1  = 309: the lowest frequency (f 0 =990 kHz) corresponds to channel 1, with N 1 =128+48 and N 2 =436+48, with unit increments up to channel 80 (N 1 =128+127 and N 2 =436+127), but for channel 81, N 1 =128+0 and N 2 =436+1, and so on.
Patent GB-258649-A (GB)
Title: Improvements in or relating to practice bombs for aircraft use
IPC: F42B8/22
Filed: 1925-06-22
Abstract: 258,649. Vickers, Ltd., Lucas, O. D., and Caddell, W. B. June 22, 1925. Projectiles ; fuzes.-Relates to practice bombs intended to be dropped from aircraft and comprising an inner metal casing surrounded by an outer moulded body of cement, earthenware, or the like. According to the invention, the ends of the inner metal casing A are closed by metal plugs forming the nose and tail of the bomb and carrying respectively the percussion fuze and the guiding vanes. As shown, the nose plug is made in two parts E, E'. The part E carries the detonator in a tube F and the percussion cap in a chamber e<2>. The other part E<1> is detachable and carries the firing pin G, made with a riveted end plate g<1> and held in place by a shear wire g<2>, and a spring bolt J, which is retained in the locking position by a safety pin until the bomb is put in the dropping-apparatus, and thereafter by a part of that apparatus until the bomb is dropped, when the bolt is thrust out by its spring. The firing pin may in addition be locked directly by a safety pin. A tube H with a screw plug h is fitted into the tail plug C for insertion of the smoke-producing stannic chloride or other charge into the inner casing A. The vanes D are secured to the projecting part of the tube H and to sheathing plates d over the tail plug C. A suspension eve K is attached to a belt k fastened round the inner casing A before the cement B is moulded in place round the casing. The end plugs are undercut at e<1> and c' to provide a firm grip on the cement.
Patent GB-1152326-A (GB)
Title: Method and apparatus for Mixing Liquid Streams
IPC: B01F25/62
Filed: 1966-04-13
Abstract: 1,152,326. Mixing liquid streams. ONDERZOEKINGSINSTITUUT RESEARCH N.V. 13 April, 1966 [14 April, 1965], No. 16227/66. Heading B1C. [Also in Division Fl] In a method of mixing an abrasive additive with a viscous liquid, the additive is injected with a stream of the liquid and the mixture is pumped by a gear pump with which a second stream of the liquid is introduced in such a way that it flows from the shaft ends over the faces of the gears. In the arrangement shown the stream of viscous liquid 1 has a bypass 4, 9 in which are two gear pumps 5, 6, the addition being injected between them at 7 through a mechanical mixer 8; a further stream 12 of the viscous liquid is supplied to the pump 6 as by a third gear pump 13 in such a way that it flows from the shaft ends and over the gears (27, 28 Fig. 2 not shown) of the pump 6 to prevent wear thereof by the abrasive. The pump 6 further has helical grooves (29, 30) in the shafts which assist flow therealong of the second stream of viscous liquid, which is supplied through channels (31-36) to the ends of the shafts and the neighbourhood of the shaft seals. The viscous liquid may be a spinning solution of viscose or synthetic polymer and the additive a pigment e.g. a suspension of titanium dioxide.
Patent GB-714849-A (GB)
Title: Improvements relating to aircraft
IPC: B64C23/04
Filed: 1951-07-09
Abstract: 714,849. Aircraft wings. FAIREY AVIATION CO., Ltd., and PRIBRAM, E. July'4, 1952 [July 9, 1951], No. 16247/51. Class 4 An aircraft designed for flight at supersonic speeds includes a main wing provided with a bar which extends throughout the length of the wing in a direction generally transverse to the direction of flight and which is narrow compared with the wing in the direction of flight, and means arranged to support the bar in a position spaced from the adjacent wing surface and clear of the boundary layer for the wing at any speed in the transonic range. The wing B of Fig. 2 has a bar D on its upper surface at about the position of maximum wing thickness, and a bar E on its lower surface slightly aft of this position. The bars are retracted and extended by a plurality of hydraulic jacks D<SP>2</SP> and E<SP>2</SP>, operated by pipes G and H. The controls are shown in Figs. 4 and 6, the lever N at all times operating valve K by linkage K<SP>1</SP>, K<SP>2</SP> to control the bars. The lever P<SP>1</SP> mounted on shaft P inside collar N<SP>2</SP> fast to lever N controls the valve M through linkage M<SP>1</SP>, M<SP>2</SP>, and is adapted to put a trim on the elevators by hydraulic pipes L<SP>1</SP> and L<SP>2</SP>. R is an abutment fixed to the aircraft. At substonic speeds, lever N is in the position of lever P<SP>1</SP> shown in Fig. 4, and lever P<SP>1</SP> is vertical. When about to pass through the transonic region, the pilot extends the bars by moving lever N to the vertical, initiating strong stable shock waves on the wing. The plunger N<SP>3</SP> attached to handle N<SP>4</SP> is now aligned with the bore P<SP>2</SP> in shaft P. Handle N<SP>4</SP> is depressed so that plunger N<SP>3</SP> enters bore P<SP>2</SP>, and is twisted so that lug N<SP>5</SP> is locked behind lug N<SP>6</SP>, locking the levers together. When the supersonic range is reached, both levers are moved to the position of lever P<SP>1</SP> in Fig. 4, retracting the bars, and giving the elevators a permanent set suitable for supersonic flight. In this position, abutment R moves lug N<SP>5</SP> to be free from lug N<SP>6</SP>, and plunger N<SP>3</SP> is pushed out of bore P<SP>2</SP> by spring P<SP>4</SP>, freeing the levers from each other. The reverse operation takes place when reverting to subsonic speeds.
Patent GB-456967-A (GB)
Title: Improved oiling arrangement for pistons of internal combustion engines or other engines or compressors
IPC: F02F3/00
Filed: 1936-07-08
Abstract: 456,967. Pistons. CHEVROLLIER, G., 3, Park Mews West, Marylebone Road, London. July 8, 1936, No. 16250. [Class 122 (i)] In a piston in which oil is supplied under pressure to a groove 12 therein, a spring ring 14 in the groove closes the supply orifices 11 and is yieldable at a predetermined pressure to permit flow of oil to the groove. The groove may be connected by radial-passages 7, 9 and an axial passage 6 or reservoir in the gudgeon pin to the pressure feed oil system of the engine &c. The supply to the groove may be controlled by removable jet member 18. A cruciform supply passage 15 may be formed in the upper part of the piston and may be lined with steel tube. Return passages 20 may connect the groove with the piston interior.
Patent GB-530052-A (GB)
Title: Improvements in or relating to electron discharge devices and envelopes therefor
IPC: H01J19/34
Filed: 1939-06-02
Abstract: 530,052. Discharge apparatus. STANDARD TELEPHONES & CABLES, Ltd., WINDSOR, W. A., and DAVIS, R. B. June 2, 1939, No. 16284. [Class 39 (i)] An electron discharge device, preferably of the type in which the anode forms part of the envelope, has an electrode attached by means of a joint having machined facing surfaces to a supporting arm which is fixed in a metal cap sealed over a laterally extending tubular projection of the envelope, the joint being such as to fix the relation between the electrode and the arm in a non-adjustable fashion, in the form shown, the tubular support arm 2 has a sliding fit in the closed end cap 1 which is sealed to a vitreous offset of an open-ended container not shown. A member 3 is welded into the arm and has machined surfaces 3a, 3b, 3c co-operating with similar surfaces on another member 4 attached to the electrode 5, which may be a tubular end screen with a reinforcing metal ring 6. After assembly, the electrode 5 may be aligned with respect to other parts of the device, by reason of the sliding fit of the arm 2 in the end cap, manipulation through the open end of the envelope and the arm and cap are then rigidly secured together, for example by soldering, from the outside of the container. The electrode may have longitudinal rods upon which a grid is wound. The invention may be used in discharge device as described in Specification 465,863.
Patent GB-332000-A (GB)
Title: Improvements in or relating to brushes, mops and similar articles
IPC: B25G3/00
Filed: 1929-05-27
Abstract: 332,000. Dehn, F. B., (Cave, H., and Manning, C. P.). May 27, 1929. Hinged multiple-support handles. - A handle for a brush, mop, or house cleaning appliance having a core 9 of twisted wire, is attached by spring pivots 17, 18, Fig. 6, to a metal bracket 11 having grooves 14 and lugs 15 to engage inturned ends 10 on the core 9. The ends 10 are so secured to the bracket that they extend transversely of the thrust applied through the handle so that the ends will not be disengaged from the grooves 14, and no means, other than the clamping means 15 are required to retain the ends in place. In the example shown, ends 12 of the bracket are free, but they might be extended to engage the middle portion of the core 9.
Patent GB-170331-A (GB)
Title: Improvements in and relating to bow current-collectors in overhead wire systems of electric traction
IPC: B60L5/16
Filed: 1920-06-17
Abstract: 170,331. Brecknell, Munro, & Rogers, Ltd., and Willis, A. M. June 17, 1920. Bow collectors; controlling arrangements for collectors.-A bow collector q can be tilted to suit the elevation of the overhead wire by having lugs t which are bolted to a forked member r provided with a stem adapted to telescope into a single pole a. The control rope o passes through an eye p at the head of the pole to a bolt j pivoted at k to the revolving base c and engaging a socket m on the base d to prevent rotation of the pole. The Provisional Specification states that the bow is composed of aluminium with a channel or groove for lubricant.
Patent GB-1292615-A (GB)
Title: Improvements in or relating to roof constructions
Inventor: BAINBRIDGE HAROLD
IPC: E04D13/04
Filed: 1969-03-28
Abstract: 1292615 Roof constructions BAINBRIDGE BROS (ENGS) Ltd 24 March 1970 [28 March 1969] 16414/69 Heading E1W A roof 10, which may constitute a porch roof, comprises a gutter 15 formed within its boundaries, the gutter being provided with a drainage outlet 22 and an overflow outlet 23. The gutter, which may be in the form of a recessed area defined between a timber side frame 12 and a joist 14b, may have a floor constituted by a timber member 19 spaced downwardly from the top of the roof and again covered by a layer of wood chip board 20 a polythene sheet 20A and an aluminium sheet 21. The roof 10 may comprise a wood chip board 16 covered by polythene sheet 17 and aluminium sheet 18.
Patent GB-1380013-A (GB)
Title: Clutch for conveying rotary motion
IPC: F02B1/04
Filed: 1973-04-06
Abstract: 1380013 Overload release clutches FLYMO SA 6 April 1973 16473/73 Heading F2C In an overload release clutch for a lawn mower wherein driving and driven clutch discs 10, 9 respectively freely rotatable on and axially slidable on a driven clutch sleeve 6 have interengaging inclined facial teeth, the teeth are normally held engaged by a spring-pressed ball detent 12 which, on overload, rides out of a recess 14 in the driven clutch sleeve 6 to permit clutch disengaging axial movement of the driven disc 9. The clutch is maintained disengaged by the detent balls 12 engaging a second annular recess 17 in the sleeve 6. The clutch is reengaged by exerting manual pressure on an end cap 21. The driven disc 9, sleeve 6 and a driven shaft 4 are rotatably secured together by pins 8. The cover 21 may be shaped to facilitate pulling the clutch disc 9 manually into the disengaged position.
Patent GB-1015399-A (GB)
Title: Penicillins
IPC: C07D499/46
Filed: 1963-04-26
Abstract: Penicillins having the formula <FORM:1015399/C2/1> wherein R1, R2 and R3 are hydrogen, halogen, nitro, alkyl, alkoxy, alkylthio, alkylamino, dialkylamino, alkanoylamino, alkanoyl, alkylsulphonyl, cycloalkyl, cycloalkoxy, or substituted or unsubstituted aryl, aralkyl, aryloxy or aralkyloxy groups, and non-toxic salts thereof, may be prepared by reacting 6-aminopenicillanic acid with the appropriate acid or functional derivative thereof.  Examples relate to the production of the potassium salts of 6-[a -(3-pyridyl) acetamido]-, 6-[a -(6-methyl-3-pyridyl)-acetamido]- and 6-[a -(2-methyl-3-pyridyl-acetamido]-penicillanic acids.  a -(2-Methyl-3-pyridyl) acetic acid is prepared by hydrolysis of ethyl-(2-methyl-3-pyridyl)-acetate which is obtained by the reaction of ethyl alcohol saturated with dry HCl on the product obtained by the reaction of alcoholic caustic soda solution and a -(2-methyl-3-pyridyl) thio-acetomorpholide, which is obtained by reaction of morpholine and elemental sulphur on 2-methyl-3-acetylpyridine which is obtained by reaction of 1,3,3-triethoxy-1-propene with acetyl acetone imide <FORM:1015399/C2/2>  Pharmaceutical compositions comprise penicillins of the above formula associated with a suitable carrier.
Patent GB-942808-A (GB)
Title: Improvements in or relating to combined clockwork and manually operated mechanisms
Inventor: BOWEN TOM
IPC: G04F3/02
Filed: 1960-05-10
Abstract: 942,808. Retractive switches; cam-operated switches. S. SMITH & SONS (ENGLAND) Ltd. May 10, 1961 [May 10, 1960], No. 16545/60. Heading H2B. [Also in Divisions D1 and F2] A combined manual and clockwork actuating mechanism comprising a single manipulating member is so arranged that movement in one direction by hand away from a datum position conditions the clockwork for actuating one control device and movement in another direction by hand away from the datum position actuates another control device. Contacts 15, 16 on blades 13 engage contact strips 14, 17 respectively to provide a double pole two-way switch (only one pole shown). A peg 20 extends through a hole 19 in a base member 10 and acts as a follower for a face cam 41 on the spindle 26 of the manipulating member. The clockwork mechanism embodies a conventional escapement wheel 24 controlled by a balance wheel 25 and driven through a gear train from a spindle 26, to which is attached a mutilated gear-wheel 27. A spindle 29 carrying gear-wheels 28, 31 is swung, in known manner, by a ratcheting action to disengage the gears when the transmission is rotated in one direction. A spiral spring 34 has one end fixed to the spindle 26 and the other end fixed to a lug 35 on an anchor plate 36. An arm 37 is attached to the spindle 26 and engages the lug 35. Rotation of the spindle to wind up the spring 34 moves the arm 37 away from the lug and actuates the ratcheting mechanism. Rotation of the plate 36 is prevented by an abutment 38 engaging in a slot 39 in a plate 23 and a second lug 40 on the plate 36 prevents over-winding of the spring. When the manipulating member is released the spindle 26 rotates, carrying with it the face cam 41 and after a time the pinion 28 enters the cut-away portion of the gear-wheel 27 which then rotates rapidly until the peg 20 reaches the datum position on the cam 41. When the arm 37 engages the lug 35, as the spindle 26 is rotated in the opposite direction to that for winding, the whole anchor plate 36 rotates. A cam plate 46 which is provided with cut-out portions 48, 49, is engaged by a camfollower 50 fixed to a pivoted arm 51 which is tensioned by a spring 53. The cam-plate 46 locates the spindle 26 in the datum position when the follower 50 is in the cut-out portion 48. The cut-out portion 49 detains the spindle in the position where the contacts 16 and the strips 17 are engaged and prevents rotation of the spindle beyond this point.
Patent GB-1528274-A (GB)
Title: Tread bands for use in tyre retreading
Inventor: KENT J H F
IPC: B29D30/00
Filed: 1976-04-23
Abstract: 1528274 Moulding tyre tread bands BEVERLEY Ltd 22 April 1977 [23 April 1976] 16592/76 Heading B5A Apparatus for producing an unvulcanized tread band from a strip 32 of unvulcanized material includes an annular mould 31 against the inner surface of which the strip is forced by an expandable annular member 34 with side walls extending from the zone of strip contact and biased outwardly, e.g. by circumferentially spaced springs 37, to maintain the member in tension when it is forced against the strip, e.g. by a gas bag 33 surrounding a metal casting 53. The edges of the sidewalls may be of zig-zag pattern with the strings connected between the points of the pattern and plates 38 carried by a column 41. The mould is mounted on a carriage 40. Additional bags may be located between the casting 53 and the bag 33. To vulcanize the thus formed band, the mould 31 may be heated and positioned over expansible segmented rings 21, 22, Fig. 2, forced outwardly by an hydraulic ram and cylinder assembly 27, 30.
Patent GB-1139199-A (GB)
Title: Shaft connecting arrangement
IPC: G05G1/12
Filed: 1966-04-15
Abstract: 1,139,199. Securing cams on shafts. ROBERTSHAW CONTROLS CO. 15 April, 1966 [26 April, 1965], No. 16682/66. Heading F2U. A cam 3<SP>1</SP> is circumferentially adjustably connected to a shaft 54 by a collar 59 which is adjustably secured to the shaft by a set-screw and has a pair of facial lugs engaging slots 80, 81 formed in the cam 3<SP>1</SP>. Axial movement of the cam away from the collar is prevented by a retaining ring 60 snapped into an appropriate one of a number of axially spaced grooves 58. The shaft has a knob receiving end 56 having a flat or is otherwise shaped so that the knob can be connected to the shaft in only one angular position. The end 56 of the shaft may be slotted to provide resilience to assist in frictionally retaining the knob, or a retaining spring may be connected to the shaft for this purpose. The arrangement permits the cam to be connected to the shaft in different orientations relative to the knob and at different axial distances as required for various installations. The shaft is releasably secured to a switch casing 4<SP>1</SP> by a plate 42 having resilient arms 43, 44 having apertures engaging lugs 45, 47 on the casing.
Patent GB-222208-A (GB)
Title: An improved loud speaker for wireless apparatus
IPC: H04R13/02
Filed: 1923-06-27
Abstract: 222,208. Parker, H. W. June 27, 1923. Telephones.-The magnet system of a telephone receiver comprises permanent magnets d, laminated connecting links b<1> and laminated pole-pieces b. As shown, two bar magnets d of rectangular section have the ends bevelled to fit notches in the connecting links b<1>. The L-shaped pole-pieces b and the connecting links are secured bv clamping plates a held down by screws c.
Patent GB-991171-A (GB)
Title: Improvements in or relating to lithography
Inventor: CROKER JOHN
IPC: C08F263/08
Filed: 1961-05-08
Abstract: An ink suitable for impregnating a typewriter ribbon for use in imaging lithographic printing plates comprises a heat-polymerizable acrylic ester monomer, di-allyl phthalate monomer or di-allyl isophthalate monomer.  The ink may contain a polymer of one of the said constituents dissolved therein and may also include a polymerization catalyst, a polymerization inhibitor effective only at room temperature, a pigment, a dye or a filler.  The ink is polymerized by heating the printing plate to about 150 DEG  C.  In one example a suitable ink composition comprises:- .Di-allyl phthalate monomer.25 gms .Partially polymerized di-allyl. .phthalate.50 gms .Oil-soluble red dye.0.5 gms .Benzoyl peroxide.2.5 gms .Hydroquinone.0.01 gms
Patent GB-529819-A (GB)
Title: Improvements in or relating to ventilators or fans
IPC: F04D29/70
Filed: 1939-06-09
Abstract: 529,819. Ventilators; centrifugal fans. EELES, C. W. June 9, 1939, No. 16854. [Class 137] [Also in Group XXVI] Air enters a short cylindrical member D which is secured to a disc B, and passes between this disc and a spaced disc A and out through tortuous passages between annular baffles A<SP>2</SP>, B<SP>2</SP> mounted on each disc and overlapping to the extent shown. The two parts A, B are secured by a screw C and lock nut C<SP>1</SP> which engages a bar E extending across the opening in the disc B. The. tubular member D may serve as driving means to cause the device to rotate and act as a fan, suitable bearings (not shown) being provided.
Patent GB-627805-A (GB)
Title: Improvements in or relating to clothes pegs
IPC: D06F55/02
Filed: 1947-06-26
Abstract: 627,805. Spring clips. CLAYTON, T. F. June 26, 1947, No. 16855. [Class 44] A clothes peg comprises two intercontacting prongs A, B, one of which rests and rocks upon the other about a pivot C intermediate of their ends together with a spring F adapted to squeeze together the two prongs at the points of pressure G, H, the spring being disposed externally of the prongs and capable of sliding, so that the points of pressure pass from one side of the pivot C to the other to positively open or close the prongs as required. The two prongs A, B, are identical in shape and the spring is provided with a loop at its centre forming a convenient handle for the peg. In the external edges of the prongs, grooves J are provided in which the pressure points G, H, may slide, the latter being formed by upturning the ends of the spring. The sliding motion of the spring is limited in one direction by the shoulders L, M of the spring abutting the upper edges of the prongs and in the other direction by the pressure points G, H, contacting the ends of a link E. This link comprises a short piece of wire working loosely in opposed holes in each of the prongs, a central pinch being formed at R to prevent accidental dislodgment. When the peg is not in use the upper ends of the prongs engage each other, but on placing the flared end D over the clothes upon a line, the spring is pushed down to its position as in Fig. 1, the prongs rotate about the pivot C and a tight grip is made upon the clothes.
Patent GB-1518754-A (GB)
Title: Apparatus for controlling the operation of gripper of a rotary printing machine
IPC: B41F21/05
Filed: 1976-04-26
Abstract: 1518754 Sheet grippers ADAMOVSKE STROJIRNY NARODNI PODNIK 26 April 1976 [30 April 1975] 16899/76 Heading B8R In a printing machine where sheets 26 are moved on to impression cylinder 2 by means of grippers carried on an oscillating shaft 9, control of the opening and closing of gripper jaws 15 is effected by two cams 11, 12 and spring-urged cam follower (17), Fig. 1 (not shown). The cams 11, 12 are fixed to rotating support 8 which is driven by toothed gears 3, 4 from the impression cylinder drive, and are independently adjustable in position on support 8 to alter the gripper cycle by means of screws (18, 19), Fig. 1. Cam-follower (17) is supported on a bolt 13 fixed to lever 20 which is in turn fixed to the control shaft 14 of chuck 15.