baber/WOPTO huggingface dataset:
Patent GB-499380-A (GB)
Title: Improvements in or relating to the correctors of listening apparatus
IPC: G01S1/72
Filed: 1937-07-20
Abstract: 499,380. Locating sounds. TEPAS, KOMANDITNI SPOLECNOST HARLAS A SPOL. V PRAZE, and HARLAS, J. July 20, 1937, No. 20126. [Class 118 (ii)] In a corrector for sound direction finding apparatus, a pointer is operated from the listening apparatus, and a pencil is moved by manually operated means to follow generally the movements of the pointer so as to trace a path over a spherical surface. An aircraft , travelling at constant height and speed describes the path MR, Fig. 1, and is observed from a point p, but, owing to the velocity of sound, when the aircraft is at R it appears to be at N. If the velocity v of the aircraft is known then by marking off a length pn<1> proportional to the velocity c of sound and n<1> r<1> proportional to v, p r<1> produced gives the actual position R. The trace m, n, r on the hemispherical surface k determines the roof plane and great circle x, r, y, the diameter x, y of which gives the direction of flight making the angle # and with an arbitrary direction pO. A quadrant p, a, r, moves so that a remains on the horizontal great circle xay, the angle apO being the azimuthal angle yr while the angle that Rp makes with the horizontal is the altitude bearing angle #r. Upon the shaft 5 and arm 3 being rotated from the listening apparatus, the fork 6 and shaft 8, Fig. 4, are caused to rotate. Between the fork 6 and the lever 11 are mounted a screw 15 and block 13 with a spigot 16 working in a slot in the pointer 18. The block is adjusted so that its distance from the fork is to the distance of the pivot 17 from the pivot 7 as v /c. Between two strips 20 attached to the shaft 8 is mounted the block 21 carrying the pencil, the block being caused to slide by the quadrant arm 26 mounted on the carrier casing 27 and geared to the bevel 32. Assuming an aircraft to approach, the azimuthal and altitude angles, #, c of the listening apparatus will, in general alter causing shafts 38, 5 to rotate. Upon shaft 38 rotating, the hemisphere 1 will rotate through the arbitrary angle # by means of gearing 36, 37, thus causing the worm 10 and shaft 8 to, rotate through the same angle due to gearing 39, 40, 41 and the casing 27 due to gearing 45, 46, 47, also the arm 26 through 35, 52, 33, 32 and internal gearing, Fig. 6, (not shown), so that the parts of the system remain relatively at rest, except that the pointer 18 is displaced since the bearing in which shaft 5 rotates is stationary. The operator turns the hand wheels 49, 54 so that the pointer 18 is over the centre of the disc 25, the angles #r, #r being recorded at 50, 55 and applied through the differentials 46, 51. The operator now rotates handwheel 43 until the direction indicator on the disc 23 is travelling over the trace m n, the angle # added being recorded at 44 and applied through the differential 40 to the crown 10. The acoustic deviation is now applied by the screw 15 and the hand wheel 49 re-adjusted.
Patent GB-841026-A (GB)
Title: Device for sensing and indicating changes in flow conditions in a fluid pumping system
Inventor: BAXTER IAN GEORGE
IPC: A61M16/00
Filed: 1957-06-26
Abstract: 841,026. Indicating vibrations. BRITISH OXYGEN CO. Ltd. June 26, 1958 [June 26, 1957], No. 20152/57. Class 106 (4). [Also in Group VI] Apparatus for sensing and indicating changes in flow conditions in a fluid pumping system comprises a pump 3 actuated by pressure fluctuations in the system, a reservoir 7 pressurized by the pump 3, pressure-responsive bellows 7 movable in response to pressure changes within the reservoir 7 and signalling means B operated by the bellows 7 to indicate relevant changes in flow conditions. The pulsating pressure in the pumping system is applied through inlet 6 to a chamber 4, causing a diaphragm 2 to fluctuate and so pump gas from chamber 3 to bellows 7 through a non- return valve 9. Gas pressure in the bellows 7 is relieved through a passage 11 and narrow bleed 12 which discharges into a bag 13 of such volume and flexibility that its internal pressure remains substantially atmospheric, while a second non-return valve 14 permits gas to flow from the bag 13 through a passage 15 to the pump chamber 3. The free end of the bellows 7 operates, through a push-rod 16, a microswitch in an alarm circuit, which can be held open only so long as a sufficient pressure is maintained in the bellows 7 by the pumping action of the diaphragm 2 and this will fail and cause the alarm to be given after a period of time in a number of different conditions. The projecting end of the inlet 6 and annular projection 10 surrounding the passage 8 each act as stop limiting movement of the diaphragm 2 and the guide bush 17 limits movement of the bellows. The supply system may be of gas to an artificial respirator or of fluid to tools in automatic processes.
Patent GB-516748-A (GB)
Title: Improvements in photographic enlarging apparatus
IPC: G03B27/36
Filed: 1938-07-08
Abstract: 516,748. Photographic projection printers. McKERROW, C. N. July 8, 1938, No. 20226. [Class 98 (i)] In an enlarging apparatus of the kind in which the projection apparatus is vertically adjustable relatively to a fixed printing table, the projection lens and illuminant remain at a constant distance apart throughout the enlarging range, and are moved jointly relatively to the condenser and negative carrier, in order to effect automatic focusing adjustment and to maintain the illumination of the negative uniform, by the single operation of setting the projection apparatus for a given degree of enlargement. Provision is made also for (1) disconnecting the automatic focusing mechanism to permit manual focusing (2) adapting the automatic focusing mechanism to the focal length of the projection lens used, and (3) varying the intensity of the printing light by including at will in its circuit a ruby inspection lamp. As shown, the apparatus comprises a stationary printing table a and a graduated pillar b mounted on the table and having guides for a counterweighted slipper e, Fig. 5, carrying a bracket e<1> supporting the housing g for the lamp h, condenser j, negative holder k, and the lens l. The lens-holder and the lamp are carried by a slide q to which is secured a slotted plate u, Fig. 3, the slot being formed with gaps u<4> into either of which a stoppin u<5> mounted on a spring-arm u' pivoted to the slide may be sprung. The slide is adjusted by a short arm m<2> abutting against the pin and secured to a focusing arm m having a stud engaging a slot in a quadrant scale n for manual focusing. For automatic focusing, the arm is provided with rollers s, s', the latter of which is carried by a spring s<2> mounted on the arm, adapted to be engaged over a cam-rail o, and is held in place by a rigid tongue t secured to the friction-damper m<1> of the arm by a wing-nut and engageable with a bracket m<3> on the arm. The lamp may be adjustably secured in a ring h<2> carried by a vertically adjustable plate h<3> secured to the slide. In a modification, the lamp is carried by a vertical rod slidable through the top of the housing g, and secured to the slide q. The lamp h may be disposed in circuit with ruby coloured resistance lamp v controlled by a three-way switch so that the ruby lamp may be switched on either with the lamp h to vary the intensity of the printing light, or independently of the lamp h to facilitate setting of the apparatus. Specification 461,574 is referred to.
Patent GB-261087-A (GB)
Title: Improvements in or relating to the cartridge feed mechanism of machine guns
IPC: F42B39/08
Filed: 1925-08-12
Abstract: 261,087. French, G. F. Aug. 12, 1925. Machine guns; cartridge belts.-To prevent lateral displacement of the cartridge belt during the extraction of a cartridge therefrom, a longitudinal shoulder on the belt is engaged by the side of the feed pawl or by a shoulder thereon. As shown in Figs. 1 and 2, a fabric belt having the usual turned-over edge forming a shoulder l is made of such a width that the feed pawl b<2> engages at the side of the shoulder l. The belt has metal stiffening strips k. In a modification, Fig. 3, the belt is of the usual width and the turned over edge is narrower than usual. The pawl may be formed with a shoulder, groove, or projection engaging the belt, as shown in Figs. 5, 6 and 9. The belt may be formed with a further thickening l<1>, Fig. 1, away from the edge to serve as a footing for the working face of the pawl. The belt shown in Fig. 11 has small intermediate transverse pockets for stiffening strips p and may also have stiffener pockets s on the side walls of the cartridge pockets. The belt is provided with a handle q made from metal rod of round section.
Patent GB-358107-A (GB)
Title: Balanced protective relay circuit for electrical machine sets, more particularly for ljungstrom sets
IPC: H02H7/06
Filed: 1930-07-04
Abstract: 358,107. Protective cut-out arrangements. SIEMENS-SCHUCKERTWERKE AKT.-GES., Siemensstadt, Berlin. July 4, 1930, No. 20345. Convention date, July 5, 1929. [Class 38 (v).] Balanced protective arrangements for Ljungstrom sets in which a prime mover drives two mechanically - coupled generators operating and controlled in synchronism have one current transformer group in the common connecting line between the generators and the bus-bars, this group operating in conjunction with two current transformer groups situated in the winding ends of the two generators remote from the bus-bars. As shown in the Figure, the generators 2, 3 feed bus-bars through a common line 4 provided with current transformers 5 connected as shown with current-transformers 6, 7 in the remote ends of the machine windings which are brought out to star points. Protective relays 12, 13, 14 are connected between the common lead 8 of the current transformers and the leads 9, 10, 11 connecting the outer ends of the transformer windings, the balanced protection thus extending beyond the junction of the leads 4 with the supply leads passing to the individual machine. The transformer group 5 may also be arranged to operate overload relays. In a modification, Fig. 2 (not shown), the resultant current through the relays 12, 13, 14, which are sensitive to interphase faults, passes through the current coil of a wattmeter relay for dealing with earth faults, the potential coil being fed from the ends of a resistance inserted in a connection between a star point on the network and earth.
Patent GB-600726-A (GB)
Title: Improvements in or relating to spectacles, goggles and the like
IPC: G02C1/02
Filed: 1944-10-20
Abstract: 600,726. Spectacles, goggles, &c. DELCANHO, B. B. Oct. 20, 1944; No. 20378. [Class 97 (i)] Spectacles, goggles &c. having a substantially rigid rimless front portion comprise a bridge integral with the lenses or other eyepieces, and are composed of transparent material, which may be a synthetic resin. The eyepieces may consist of sheet material to which vitrous lenses are cemented. The front portion 10, Fig. 1, has the bridge 14 integral with the eyepieces 16, 18, and has side pieces 12 of the same transparent material, hinged to its opposite ends by U-shaped knuckles 24 integral with the front portion, and marginal portions 20, 22 bent inwards to form placquets below the bridge 14. In the case of goggles and eye screens the front portion may be of coloured transparent material and may have side wings. Reference has been directed by the Cornptroller' to Specifications 490,197, 518,333 and 569,134.
Patent GB-475642-A (GB)
Title: Improvements in or relating to machines for cutting manufactured tea and like dry substances
IPC: A23F3/12
Filed: 1937-07-23
Abstract: 475,642. Cutting tea. BROOKE, BOND, & CO., Ltd., and WOOD, C. July 23, 1937, No. 20413. Convention date, July 23, 1936. [Class 129] A rotary cylinder 1 is pierced by numerous holes 2, and tea fed into the cylinder from the ends thereof, is trapped in the holes and sheared by knives 19, 20. Gauge plates 25, 26 outside the cylinder prevent the tea leaving before passing under the knives. Baffle plates 23, 24 direct the tea into position for cutting. The holes are tapered outwards. The knives are mounted on shafts 21, 22 which may be turned to adjust the cutting edges of the knives. The clearances between gauge plates 25, 26 and the cylinder 1 are adjustable by turning the plates around shafts 28, 29. The plates may be connected by links 30 ... 32, and a pointer 35 move over a scale to indicate the amount of the clearance. The cylinder has gear teeth cut in the end walls, which teeth mesh with teeth on driving pinions. The knives and their baffle and gauge plates may also rotate in the same direction as the cylinder but at a lower speed.
Patent GB-1521384-A (GB)
Title: Method of preparing carbides and apparatus for carrying out the method
IPC: C01B31/30
Filed: 1976-05-18
Abstract: 1521384 Carbides A I ANDRJUSHIN S A KUZNETSOV N P GALKIN J N TUMANOV B A KISELEV I B SORKIN V I DOBROVOLSKY and J P BUTYLKIN 18 May 1976 20441/76 Heading CIA [Also in Division H5] The carbides of boron or titanium are prepared in a block form by a continuous method in which powder charges of carbon and the oxide of boron or titanium are fed continuously to a water cooled non-magnetic inductively heated tubular reactor, the walls of which are slotted and contain therein quartz, corundum or boron nitride as dielectric fillers thereby allowing high frequency currents to be induced throughout the whole charge in the reactor so that the latter is heated substantially uniformly throughout to a constant temperature. The charge is compacted during carbidization by the continuous supply of fresh charge to the reactor. In a suitable apparatus (see Fig. 1), the tubular reactor 3 placed in the inductor 2, is fitted with a hopper 7 and a push rod 9. The charge is delivered to the hopper 8 from cone 21, when the push rod is in its upper position, the push rod continues to compact the charge, the degree of which is controlled by the spring load valve 12. Induction currents penetrate the dielectric filled slots 5 (Fig. 2) in the wall of the reactor 3 to heat the compacted charge substantially uniformly throughout its volume. The carbide once formed exits through spring loaded valve 12 into the hoppers 14, 15, in the first the carbide is crushed and in the second it is cooled.
Patent GB-1137314-A (GB)
Title: A method of processing particles of cellular thermoplastic material having bonded thereto non-thermoplastic material of fibrous structure
Inventor: FRIELINGSDORF HANS
IPC: C08J9/33
Filed: 1967-05-03
Abstract: 1,137,314. Processing waste cellular material; laminates. SHELL INTERNATIONALE RESEARCH MAATSCHAPPIJ N.V. 3 May, 1967 [6 May, 1966], No.20475/67. Headings B5A and B5N. Pieces of cellular thermoplastic material bonded to non-thermoplastic fibrous materials are processed by heating to above the softening point of the thermoplastic material and pressing the pieces together to form a non-cellular sheet which is subsequently cooled. The pressing may be carried out in a mould with a sheet of paper on its base and/or on the face of the pressing member or sheets of paper may be stuck to the faces of the sheet, forming a laminate. The pieces are preferably off-cuts from a laminate of polystyrene foam and paper containing 25-50% by weight of polystyrene. The sheets formed may be used as a substitute for hardboard, e.g. in panelling, walls, doors, shuttering and furniture and may be shaped by bending around a heated mandrel or in the original moulding process.
Patent GB-207228-A (GB)
Title: An improved construction of machine for delivering tickets that are printed on rolls of paper
IPC: G07B3/02
Filed: 1922-07-27
Abstract: 207,228. Cornish, P. July 27, 1922. Tickets, holding and issuing.-A number of rolls 8 of strip-tickets are contained in compartments 3 in the rear part of the machine, the rolls being supported on rollers 4, 5, and the strips being led to the issuing slot over guide rollers 7; rollers 6 serve as abutments for the fronts of the rolls of tickets as the strips are withdrawn. The strips are yieldingly held against the front wall of their casing by tongues 26 of rubber carried by a wire frame 27 mounted on pivoted brackets 28. Springs 32 normally pull on the frame to hold the tongue against the strips, but the tongues may be held raised by clipping a hook 33 over the end of the frame 27. The strips, in front of the tongue 26, pass down channels in a stationary plate 9 on to the front portion of an arc-shaped movable plate 12 carried by side-members 18 supported on a shaft 19 mounted in elongated bearings 20 in the side-frames 10. The members 18 bear against cams 21 so that when turned on its axis the movable plate 12 is raised to a slight extent. Atjustable stops 22 limit the travel of the plate 12 to the length of one ticket, springs 25 or a weight returning the plate to its normal position. Thumbslots 16 are cut in the front end of the plate 9 and a casing 14 provided with an opening fitted with a glass slab 17 is fitted over it. In operation a strip is pressed against the movable plate 12 which is then swung outwards and released; the length of strip that has been withdrawn is torn-off against a raised ledge 24 on the front of the plate 12. To prevent tickets being withdrawn from the machine means is provided to lock the plate 12 against movement: bayonet slots are formed in the rear portion of the plate and are adapted to be engaged by pins 36 projecting from a transverse rod 35 that may be moved so that the pins rest in the longitudinal part of the slots, -in which position the machine may be operated,-or in the transverse part, the machine then being locked.
Patent GB-422215-A (GB)
Title: Improvements relating to windows
IPC: E05F11/38
Filed: 1933-07-22
Abstract: 422,215. Window holders. SLEIGH, H. L., CHESTON, A. S., and STUART, F. J., Widney Works, Bagot Street, Birming- ham. July 22, 1933, Nos. 20666/33 and 14364/34. [Class 44] [See also Group X] A sliding sash 23 is held in any required position by the engagement of pawls 27 on a rock shaft 26 with fixed rackbars 30, in the manner described in Specification 374,129.
Patent GB-1207754-A (GB)
Title: Improvements in gear mechanisms
Inventor: KAHL ARTHUR
IPC: F16H27/02
Filed: 1968-05-02
Abstract: 1,207,754. Gearing for converting rotary into reciprocating motion. ELEKTROMAT VEB. 2 May, 1968, No. 20759/68. Headings F2K and F2Q. Epicyclic gearing, e.g. for use in converting rotary into reciprocating motion comprises a driving carrier 3 carrying a planet pinion 7 which selectively meshes either an axially movable non-rotatable ring gear 5 or a non- rotatable sun gear 10 so that a pin 9 eccentrically mounted on the planet pinion 7 describes either an epicycloid or hypocycloid path and co-operates with a further mechanism, e.g. slide rings and guides, to provide intermittent reciprocating motion. As shown, the sun gear 10 is also axially movable. Again, the sun gear may be axially fixed and selectively braked. The sun gear 10 is shown mounted on a rod 4 keyed to a disc 12 held non-rotatable on a housing 1 by torsion rods 13. The ring gear 5 is slidable along torsion rods 6 fast with housing 2.
Patent GB-294151-A (GB)
Title: Improvements relating to the warp let-off mechanism of looms for weaving
IPC: D03D49/06
Filed: 1928-07-17
Abstract: 294,151. Charroud. L. J., and Barruel, F. July 18, 1927. [Convention date]. Permanently-applied. - An endless chain 1 passing round a pinion 2 on the warp beam of a loom passes around winding pulleys 5, 6 and a pinion 7 in a box 4. The shaft 8 of the pinion 7 carries a pulley 9, which is braked by a band 10 having a lining 11 of leather and balata. One end of the band 10 is attached by a bolt 12 to the box, and the other end is acted upon by a spring 15 adjusted by a wing nut 14 on a bolt 13. The box is weighted by means of weights or a weighted bar engaging slots in side-pieces 21 and is raised as the warp tension increases until a trip lever 16 pivoted to the box and sliding in an adjustable part 17 in the loom frame is turned by this part so as to relieve the brake to allow the warp to unwind to the exact extent required, the box thereafter remaining at a constant level. The apparatus is suspended by means of a hook 18 from a fixed hook 19, acting when the loom is stopped or is working backwards.
Patent GB-707213-A (GB)
Title: Improvements in or relating to a method of and apparatus for producing electric power outputs from weak magnetic fields
IPC: H03F9/04
Filed: 1948-08-06
Abstract: 707,213. Magnetic amplifiers. HEMING- WAY, A. V., and ATKINSON, P. D. Aug. 5, 1949 [Aug. 6, 1948 ; Jan. 3, 1949], Nos. 20853/48 and 113/49. Class 40 (4) In a magnetic amplifier, two alternating current energising windings 2, 3 saturate a highly permeable magnetic circuit 1 over the greater part of each half cycle of energizing current and produce balanced or unbalanced opposed fluxes in a centre limb 7 which carries a control winding 8 and an output winding 10. With balanced fluxes, unidirectional pulses of proportionate area to the control energization and shaped as shown in Fig. 2 are induced in the output winding and applied to output terminals through a series-connected rectifier and shunt reservoir condenser, Fig. 5 (not shown). Alternatively, with unbalanced fluxes, alternating pulses are induced in the output winding which become asymmetric as shown in Fig. 4 when control energizationis applied. The asymmetry of the output pulses may be detected by the use of either of the rectifier and condenser circuits shown in Fig. 8 or Fig. 9. A tuned circuit consisting of the control winding and a condenser 13 provides additional amplification by feed-back resonance haying a period approximating to the reversal time of the energising flux. In the arrangements shown in Figs. 8 and 9, a silicon carbide ceramic resistor may be used in place of the rectifiers 9. The unbalanced fluxes may be produced by unequal ampere-turns, an impedance shunt, increased mechanical pressure on part of the magnet circuit, or reduced cross-section dimensions.
Patent GB-1046029-A (GB)
Title: Improvements in and relating to rotary contact seals
IPC: F16J15/34
Filed: 1962-05-30
Abstract: 1,046,029. Mechanical seals. U. M. BARSKE and W. MURRAY. Aug. 28, 1963 [May 30, 1962], No. 20882/62. Addition to 945,798. Heading F2B. In a seal for a rotary shaft 1 and comprising an axially movable seal ring 4 sealed to the shaft casing 3 by a flexible diaphragm 10 and urged into facial sealing contact with a ring 2 fixed to the shaft by a circumferential set of juxtaposed leaf springs 6 fixed together at their outer ends and free at their inner ends, the diaphragm 10 is bonded to the springs 6 and/or the ring 4 is supported and sealed by two sets of springs 6a, 6b, Fig. 5, and associated diaphragms 10a, 10b separated by a coolant chamber 18. The diaphragms 10a, 10b may or may not be bonded to the springs 6a, 6b and cooling fluid is circulated through the chamber 18. The ring 4, Fig. 1, is carried in a carrier ring 5 and the diaphragm 10 may be bonded to the ring 5 and to an outer ring 7; the outer margins of the springs 6 being clamped between the ring 7 and a ring 8. The diaphragm is bonded to the side of the springs facing the fluid pressure to be sealed. The springs 6 may be constructed and arranged as described in the parent Specification, i.e. they may be integrally connected at their outer ends or may be separate triangular leaf springs which may be spaced by pins 9, Fig. 4 (not shown). The diaphragm may be of nitrile rubber, Neoprene, silicone rubber or the material sold under. the Trade Mark " Viton ".