baber/WOPTO huggingface dataset:
Patent GB-418554-A (GB)
Title: Improvements in machines for making geometrical designs
IPC: B43L11/00
Filed: 1934-01-16
Abstract: 418,554. Curve-drawing instruments. JONES, H. B., and BOCKIUS, W. A., 2300, South Wabansia Avenue, Chicago, U.S.A. Jan. 16, 1934, No. 1612. Convention date, Jan. 16, 1933. [Class 97 (iii).] A machine for drawing geometrical designs comprises a turn-table for supporting a sheet, linked arms carrying a marker and connected to cranks driven conjointly with the turn-table, and means for varying the spacing between the axes of the cranks. The turn-table 7 supports the sheet by clips 11 and has teeth 12 by which it is driven from pinion 13 and handle 15. A pencil 18 is removably held in a sleeve 17 which forms the pivotal connection of two links 19, 20. Each of the latter is provided with a series of holes 38, any one of which may be engaged as desired with a stud 22a on a crank 22 adjustably mounted on a disc 33 which is integral with a pinion 23 driven by the teeth 12. The disc 33 operating the link 20 pivots on a pin 24 fixed on the base plate 8 and that operating the link 19 pivots on a pin 26 passing through a slot 27 in the base plate 8 and mounted on the end of a lever 28 which is pivoted at the centre of the turn-table and extends through a slot 29 to enable adjustment to vary the distance between the axes of the cranks. Circles may be described by disengaging the links 19, 20 from the cranks 22 and passing studs 40 fixed on the base plate 8 through the holes 38.
Patent GB-1005517-A (GB)
Title: Improvements in or relating to power operated stamping machines
IPC: B21D55/00
Filed: 1964-01-14
Abstract: 1,005,517. Punching. NATIONAL CASH REGISTER CO. Jan. 14, 1964, No. 1634/64. Heading B3W. In an automatic blanking and piercing press in which the blanks are retained in the die until discharged by an ejector, the machine includes a reciprocable ram, an electrically driven power supply mechanism, a clutch normally engaged, actuating means powered by compressed air operable to disengage the clutch if more than one blank accumulates in the die, and an air pressure switch associated with the compressed air supply for the said actuating means, so that if the air supply fails the switch operates to disconnect the electricity supply from the said power supply mechanism. The strip 29 to be punched passes over a fixed punch 23 and is guided by a spring-loaded stripper plate 26. The punch co-operates with a die 2 in which slides an ejector 9. Ejector pins 15 rest on the ejector 9 and are of such a length that when the ejector is flush with the die, the upper ends of the pins are in contact with the under-face of a knock-out plate 11. Integral with the plate 11 is a rod 13 which abuts a knock-out bar 22 just before the die assembly 1 reaches its uppermost position on the upward stroke of the press. The die assembly 1 also includes piercing punches 18 which co-operate with die apertures 28 in the punch 23. The blank sheared out on the downward stroke of the press is retained in the die until discharged by the ejector, but if it is not ejected then on the next stroke of the press the additional thickness of a second blank entering the die raises the knock-out plate 11 so that its chamfered edge 12 actuates a plunger 21 which closes a micro-switch 19. When the switch closes it operates a solenoid controlling an airvalve in the circuit of a pneumatic cylinder which disengages a clutch between the ram and flywheel of the press. The power supply to the main press motor also passes through an airoperated switch which prevents the motor being started if there is no air pressure.
Patent GB-523927-A (GB)
Title: Improvements relating to object holders for slicing machines
IPC: B26D7/06
Filed: 1939-01-17
Abstract: 523,927. Slicing-machines. HOLCH, N. F. Jan. 17, 1939, No. 1654. [Class 28 (ii)] The substance holder of a slicing- machine is of tunnellike form. As shown, the holder is attached by hook-like parts 10 to the usual substance support P, the holder comprising a platform 1, a side wall 2 and walls 5, 6, 7 relatively inclined or arcuately formed to extend from the platform 1 towards the walls 2, a space 9 being left for the passage of the web W carrying the gravity feed member E. The walls 7, 2 may be welded or otherwise secured together adjacent to the knife K. The plates 10 are spaced from the walls 1, 2 by spacers 12 through which they are riveted. The tunnel-like substance holder may be an integral part of the machine.
Patent GB-103533-A (GB)
Title: Improvements in Vaporisers for Internal Combustion Engines.
Inventor: CONSTANTINESCO GOGU
IPC: F02M17/28
Filed: 1916-02-03
Abstract: 103,533. Constantinesco, G., and Hadd on, W. Feb. 3, 1916. Vaporizers, external.-To obtain rapid vaporization without the defect of slow combustion, the fuel is fed on to heating-surfaces of considerable mass and comparatively low temperature, preferably between 180 and 250‹ C., exhaust gases which form the heating medium being admitted to the vaporizing-chamber, from which air is excluded. Exhaust gases enter at a, Fig. 1, pass through the annular space b and pipe d, and leave at m. Fuel from a float chamber f enters the perforated pipe g, whence it is distributed over a mass of metal, for example old rivets, in the vaporizing-chamber e, to which a predetermined portion of the exhaust gases may be admitted past a valve l. The vaporizer is lagged with asbestos c. Specifications 12759/11, 16229/11, 17710/11, and 2870/12 are referred to.
Patent GB-905590-A (GB)
Title: Improvements in or relating to apparatus for simulating radio navigational systems
Inventor: ROBERTS GRAHAM ESTYN
IPC: G01S1/02
Filed: 1960-01-18
Abstract: 905,590. Radio navigation trainers; photo-electric distance measurement. COMMUNICATIONS PATENTS Ltd. Dec. 12, 1960 [Jan. 18, 1960], No. 1755/60. Class 40 (7). A radio hyperbolic navigation system comprising a craft borne receiver and at least one master transmitter and one spaced slave transmitter is simulated by locating two photo-cells 43, 44, Fig. 1, on a map 40 in positions corresponding to the geographical positions of the master and slave transmitters and moving a gantry 23 over the map 40 in accordance with the simulated movement of the craft by means of lead-screws 10, 11 and 19, said gantry 23 carrying a light source in a housing 24, a lens 29 and a rotating optical grating 31, Fig. 1a, comprising a transparent disc with opaque lines in one half of the disc, said lines being perpendicular to a common radius of the disc, so that an image of the rotating grating is projected on to the map 40 such that the number of light bars in the image which sweep through a photo-cell during one revolution of the grating, and hence the corresponding number of output pulses from the cell, is proportional to the distance of the photo-cell from the axis of rotation of the grating. The photo-cell 43 corresponding to the master transmitter produces positive pulses and the " slave " cell 44 produces negative pulses and these two pulse trains are combined and integrated to give a D.C. voltage of amplitude corresponding to the difference between the distances of the receiver from the master and slave transmitters, said voltage being applied to a path difference indicator or to a pictorial display unit, e.g. a flight log. As shown in Fig. 3, the pulses from the master and slave photo-cells are applied to terminals 49 and 50, respectively, and the combined pulse trains are applied sequentially to integrators 77 and 79 during alternate rotation of the grating 31 by means of switches 70, 71 and the output voltage is taken by a switch 72 from the integrator whose input is disconnected from the input pulses, the integrators being discharged by further switches 97<SP>1</SP>, 98<SP>1</SP>, Fig. 2 (not shown), immediately before the input pulses are applied thereto; the switches 70, 71, 72, 97<SP>1</SP>, 981 are controlled by a cam, Fig. 2 (not shown), driven by the motor 38, Fig. 1, which drives the grating 31. The path difference indicator is controlled by the output voltage by means of a servo comprising a smoothing circuit 81, 82, amplifier 83, servomotor 84 and two geared follow-up potentiometers 86, 91 whose outputs are fed back selectively to the amplifier 83 by means of a switch 92 to simulate the choice of fine or coarse indication. The path difference between the master photo-cell 43, Fig. 1, and a second slave photo-cell 45 is indicated by a similar arrangement (not shown) having input terminals 49, 51 and a further group 42, Fig. 1, of photo-cells is provided to simulate a second chain of transmitters.
Patent GB-947749-A (GB)
Title: Process for the production of metal salts of carboxylic acids
IPC: C07F9/90
Filed: 1962-01-17
Abstract: Metal salts of carboxylic acids are prepared by heating a metal oxide of formula MO or M2O3, wherein M is germanium, tin, lead, arsenic, antimony or bismuth, with a mixed carboxylic acid anhydride containing hydrocarbon radicals R and R1, which may contain inert substituents and such that the acid RCOOH or the anhydride (RCO)2 O is sufficiently more volatile than the corresponding acid or anhydride containing the radical R1 to be removed from the reaction mixture by distillation.  The hydrocarbon radicals may be heterocyclic, aromatic or, preferably, aliphatic, being more preferably alkyl radicals, and the inert substituents may be halide or phenoxy groups.  R1 preferably contains 7 to 22 carbon atoms but may be other saturated or unsaturated hydrocarbon radicals, including radicals derived from tall oil fatty acids, and R preferably contains less than 4 carbon atoms and is most preferably a methyl radical. The mixed anhydride may be prepared, prior to the reaction with the oxide or in situ, by reacting a carboxylic acid, containing the R1 radical, with an anhydride or ketone and the by-product of the novel reaction is dependant upon this preparation, being a carboxylic acid when the mixed anhydride is made fn situ from acid and anhydride and a carboxylic acid anhydride otherwise, by performing the process of the invention the metal oxide, preferably is stoichiometric quantity, is added to the anhydride, or appropriate amounts of the reactants used to form the anhydride in situ, in the reaction vessel and the mixture preferably heated to reflux temperature (110 DEG  to 200 DEG C.) with agitation for 30 to 240 minutes. The by-product is then distilled off, preferably at sub-atmospheric pressure, with agitation. Several examples are given.
Patent GB-1378777-A (GB)
Title: Zigzag blanking device for use in a press
IPC: B21D28/08
Filed: 1972-01-14
Abstract: 1378777 Zig-zag punching AIDA ENG Ltd 14 Jan 1972 1775/72 Heading B3W A zig-zag blanking device comprises a punch holder 3 and a die holder 4 arranged to traverse in unison an intermittently advancing strip A to be blanked, the traversing movement being effected by intermittently rotating a rotary disc 13 provided with an eccentric pin 14 through 180 degrees alternately in opposite directions. The die holder 4 is mounted in gibs (7), (Fig. 3, not shown) for sliding movement in the press frame 6 from left to right and back as seen in Fig. 2. An extension 10 of die holder 4 has a groove 11 in its underside in which a block 15 is slidable. Loosely fitting in the block is the pin 14 which is mounted on the disc 13 by means of a screw 17, secured to the plate at 16 and in threaded engagement with the pin. The pin is eccentrically disposed on the disc relative to a shaft 12 which rotates the disc so that rotation of the plate causes the holder 4, and through guides 5 the holder 3, to move to the left or right depending on the direction of rotation, the block 15 sliding along the groove 11. The eccentricity of the pin relative to the shaft is varied, to vary the travel of the holders, by rotating the screw 17. The drive to the shaft 12 includes a sun and planet gear arrangement 27, 28, the gear 28 being rotated about its own axis and about gear 27 by a gear 33 driven by a gear shaft (34), Fig. 5 (not shown), from the press drive shaft. A pin 30 on the gear 28 fits loosely in a member 26 slidable in a groove 25 in the underside of a reciprocable member 22. The member 22 slides on guides 21 and is connected to a rack 19 which meshes with a pinion 18 on the lower end of the shaft 12. In operation, the gear 33 is rotated through 180 degrees per press cycle, moving the gear 28 about the gear 27 while the gear 28 rotates about its axis. The eccentric pin 30 moves the member 26 along the groove 25 in one direction and then the other during one rotation of the gear 28 around gear 27 and thus reciprocates the member 22 and the rack 19. The shaft 12 is thereby rotated through 180 degrees alternately in opposite directions, to move the punch and die assembly between punching positions. The portions d-a and b-c of the path C of pin 30 correspond to the holders 3 and 4 being stationary and on either side of these portions the speed of the holders is reduced or increased which avoids the adverse effects of inertia.
Patent GB-565578-A (GB)
Title: Improvements in cathode sleeves and indirectly heated cathodes including such sleeves
IPC: H01J1/26
Filed: 1943-02-04
Abstract: 565,578. Electron discharge apparatus. MARCONI'S WIRELESS TELEGRAPH CO., Ltd. Feb. 4, 1943, No. 1841. Convention date, Jan. 1, 1942. [Class 39 (i)] [Also in Group XXII] Stamping processes.- A cathode sleeve for electron discharge devices comprises a wrapped, butt jointed and swaged metal tube of any transverse section and having uniform wall thickness, the external face being emissive when hot. The sleeve may be corrugated, Fig. 8, or have washers threaded thereon, it may have two different diameters 4, 9, Fig. 6, or have a part 4a outside the spacers 5 with a diameter less than that of the main portion 4 or of a collar 12, Fig. 5, so that an emissive coating thereon is not damaged when passing through the spacer 5. The sleeves may also be formed with a flange 7 or with tapered ends 8, Fig. 8, which are a push fit in the spacer holes. The cathode sleeves are made by drawing a nickel strip S, Fig. 9, through a skelping die 20 to form an openjoint tube S<1> which is fed step-by-step through dies A, B, one of each pair being rapidly reciprocated so as to reduce and give the desired form 4 to the tube, which is oscillated about its axis during the process, e.g. by rocking the skelping die. This hammering hardens the outer surface of the tube and sets up a strain therein, pressing the butted edges together. The shaped lengths of tube may be broken off or severed by a knife 23. The edges of the strip may be coated with silver or other hard solder and the tube be heated before or after hammering to effect a union. The surfaces 4a, 9 may be coated with electronemissive compound, such as barium-strontium oxides and an insulated heating coil is inserted at the lower end of the sleeve. Specification 15858/13, [Class 83 (iv)], is referred to.
Patent GB-1174013-A (GB)
Title: Device for Stopping a Sewing Machine Driven by means of a Motor through a Clutch
Inventor: PETROWITZ EUGEN
IPC: D05B69/22
Filed: 1968-01-12
Abstract: 1,174,013. Sewing machines. NAHMASCHINENWERKE ALTENBURG VEB. 12 Jan., 1968, No. 1904/68. Heading D1G. [Also in Division F2] A sewing machine is stopped, under the control of an operator or of a monitor device, in a needle up or needle down position. The machine has a two-ratio transmission controlled by the operator using the same means as is used for stopping the machine. A control shaft 6 has an arm 19 linked to a pedal by which it may be rocked to positions I-IV. The shaft 6 has a flange 38 with axial pins 37 slidable in bores in an axially shiftable positive clutch part 18 which is engageable with a clutch part 17 fast with arms 15, 22. The clutch is engaged by a spring 41 and disengaged by an electromagnet 16 under the control of a monitor device such as a thread monitor. Arm 22 of the clutch part 17 engages an arm of a lever 7 which is freely mounted about the control shaft 6 and the other arm of which engages an aperture in a control sleeve 8 which is connected by ball bearings to the output shaft of a clutch disc 4' which is axially shiftable to engage a high speed clutch member 2 and a low speed clutch member 3. The arm 15 of the positive clutch part 17 controls two switches 27, 28, by way of a resilient pusher 29 and a rigid pusher pin 32. The switches 27, 28 are biassed to closed and opened positions respectively and are in the circuits of two photodiodes and serve to selectively bring them into the circuit according as the machine is to be stopped in its needle up or needle down position. Operation. For slow speed operation the arm 19 is moved to its position II, the lever 15 release both switches 27, 28 so that both photodiodes are inoperative, and lever 7 is in the position shown in Fig. 1 in which disc 4 engages the slow speed clutch member 3 under the action of a spring 5. In the position III of arm 19 both photodiodes remain inoperative, and the lever 7 shifts the clutch disc 4' to engage the high speed clutch member 2. On release of the pedal, arm 19 assumes the position IV which is its off position with the needle up. The pushers 29, 32 act on both switches, opening switch 27 and closing switch 28. If the arm is moved to position I, switch 27 remains open while pin 32 releases the switch 28 which opens to make the other photodiode operative to stop the machine in its needle down position. When the monitor device responds, the clutch 17, 18 disengages, and irrespective of the position of the arm 19, spring 5 biasses the lever 7 to the position shown in Fig. 1 and a spring 26 biasses the arm 15 to a position in which switch 27 is opened and switch 28 is unactuated and therefore open, so that the machine is stopped in its needle down position.
Patent GB-1068641-A (GB)
Title: Self-tightening clutch
IPC: F16D13/04
Filed: 1965-01-15
Abstract: 1,068,641. Ratchet clutches; friction clutches. G W. SEIFERT. Jan. 15, 1965 [Jan. 15, 1964; April 18, 1964], No.1990/65. Heading F2C. A self-tightening friction clutch has full engagement pressure produced by a nut running on a coarse thread, and a spring is interposed between the nut and a friction element or pressure plate of the clutch. As shown in Fig. 1 a nut 10 engages threads 2 on a driving- shaft 1 and carries a laminated spider spring 12 which is retained within recesses 13 of a driving friction disc 9 by means 14. Stops 3, 4 limit the disengaged and engaged positions for the nut 10, a spring 11 normally maintaining the nut fully disengaged against the stop 3. The friction disc 9 is brought into light frictional engagement with a driven clutch part 5 by any suitable means, the nut 10 then screwing along the shaft 1 to give full engagement. In a modification the nut 10 may be retained in its fully engaged position by providing it with a sleeve having a ball containing aperture, the ball engaging a groove in the shaft 1 when the nut is against the stop 4 and being retained in the groove by a locking sleeve. Fig. 4 shows a multiplate friction clutch having a nut 10 connected to a presser plate 42 by a spider spring 12. Fig. 5 shows an arrangement for driving an engine cooling fan 69. In this case the nut 10 engages threads on a member 10a adjustably positioned on a driving shaft 1 and the nut carries a spider spring 12 bearing against a friction disc 9 which is secured to bolts 67 on an axially displaceable housing 64. The housing 64 is secured to the periphery of a bimetallic plate 56 the inner periphery of which is retained against the shaft 1 by the head of a screw 55. In operation the shaft 1 is continuously rotated, the bimetallic plate 56, housing 64 and clutch disc 9 rotating therewith. When the temperature of the air stream coming from the radiator rises to a predetermined value, the bimetallic plate is deflected and shifts the housing 64 axially and engages the disc 9 with a friction element of the clutch part 5. The initial light engagement is augmented by screwing of the nut 10; if the temperature falls the bimetallic plate 59 resumes its initial configuration and the spring 12 relaxes. The clutch then opens when the fan 69 overruns the driving shaft 1.
Patent GB-284854-A (GB)
Title: Improvements in or relating to means for controlling the opening of trap doors in collieries
IPC: E21F1/10
Filed: 1927-01-24
Abstract: 284,854. Lisle, G. Jan. 24, 1927. Operating doors by treadles and like and by lever, springs, and cord arrangements.-A door 1 arranged across the rails 10 in a colliery is opened by an approaching tub and thereafter closed by an arrangement comprising two vertical rods 3 with arms 2 hingedly connected together by a link 8, the tub engaging with the front arm to move arms and links and so cause the door to be opened through a cord or cable 5 connected to the door and to an arm 4 on a rod 3. The door is closed after the tub by a spring or weight 9. A fender 14 may be provided on the door. A similar arrangement of levers and cord may be provided on the other side of the door, to open the door by a tub approaching in the opposite direction.
Patent GB-1204561-A (GB)
Title: Counter circuits
Inventor: BUDLONG ALBERT HENRY
IPC: H03K23/74
Filed: 1968-01-15
Abstract: 1,204,561. Relay counters. WESTERN ELECTRIC CO. Inc. 15 Jan., 1968 [17 Jan., 1967], No. 2049/68. Heading G4D. The application of a count pulse results in a first number of relays being operated, the termination of the pulse in a second number of relays remaining operated. In a 2-out-of-5 decimal counter, relays C and D are set by operation of a start key. The first pulse from source 20 energizes P so that relay A pulls up, the end of the pulse releasing P followed by C. The sequence of Fig. 2 is followed with three relays operated during each pulse, one of them restoring at the end of the pulse. The correct operation of three relays while P is energized and two while P is restored is assured by circuit 30, failure bringing up an alarm. The circuit is restored by momentary energization of relay R.
Patent GB-579648-A (GB)
Title: Improvements in or relating to electron discharge devices employing hollow resonators
IPC: H01J25/24
Filed: 1942-02-17
Abstract: 579,648. Discharge apparatus. MAYO, B. J., and HOLMAN, H. E. Feb. 17, 1942, No. 2122. [Class 39 (i)] In electric resonators such as used with velocity modulation electron discharge tubes tuning is effected by a plunger 18, Fig. 1, which is not directed towards the gap 6 in the resonator 5. Where a ribbon beam as described in Specification 574,512 is employed, the plunger axis is parallel to the long dimension of the gap. The resonator is made in two parts supported from the rods 9 and with hemispherical ends; the plunger may pass across one of these ends. A coupling-out loop 22 is carried by the end cap 19 ; extensions 20, 21 to the envelope house the plunger and loop. These extensions may be surrounded by metal sleeves to prevent escape of energy. In a modification with a toroidal resonator 26, the plungers 32, 33 are arranged along chords of the resonator and are adjusted together by gearing 34, 35, 36. Resonators as described in Specification 577,037 may have similar tuning means. Specification 530,785 also is referred to.