baber/WOPTO huggingface dataset:
Patent GB-369057-A (GB)
Title: Improvements relating to photographic film cameras
IPC: G03B17/56
Filed: 1931-05-08
Abstract: 369,057. Photographic cameras. FAIRCHILD AERIAL CAMERA CORPORATION, 270, West 38th Street, New York, U.S.A. May 8, 1931, No. 13659. Convention date, May 8, 1930. [Class 98 (i).] A control unit comprises a movable cameraholding handle, film-winding and shuttersetting means actuated by the handle, and a shutter-release operable by the hand holding the movable handle. Interlocking connections are provided between the shutter-release and the handle to prevent further movement of the handle after winding and setting until the shutter has been released, to prevent shutterrelease until the handle has executed its winding and setting movement, and to prevent return of the handle until the winding and setting movement has been completed. As shown in Figs. 1 and 2, the shaft 1 coacting with the film-winding mechanism carries a gear 36 operating a sleeve 2 through gears 37, 38. The sleeves 2, 3 coact with the shutter-setting and the release mechanisms respectively. The shutter-release 4 rotates the shaft 5 on which is a gear 7 engaging a gear 12 on a shaft 14 carrying a plate 16 to which is pivoted a forked rod 18 connected by the rod 20 to the sleeve 3. The shaft 24 of the operating handle 23 carries a loose clutch member 25 having a slot 26 co-operating with the pin 28, and forced by the spring 30 against the clutch section 29 of the bevel gear 32, which meshes with the bevel gear 34 on the shaft 1. The plate 41 pivoted on the bolt 42 has a slot 40 engaged by the pin 39 on the plate 16, and one end of the coaxial lever 43 is pressed by the spring 44 against the pin 39. The arm 46 of another coaxial lever 45 is pressed by the spring 47 against the pin 48 on the camplate 33. A fourth coaxial lever 49 has notches 51, 52, the latter engaging the lug 53 on the plate 33 under spring pressure. Until the shutter has been tripped clockwise rotation is prevented by the lug 53, but tripping rotates the sleeve 3 and renders rotation possible. The pin 39 moves towards the right-hand end of the slot 40 and causes the plate 41 to engage the lug 55 in the lever 49 and disengage the notches 51, 52 from the lug 53. The left-hand end of the lever 43 causes a notch to engage the pin 39 preventing return of the shutter-release. After the handle 23 has started to move, the eccentric portion 59 of the plate 33 engages the roller 60 on the lever 43 and frees the pin 39 from the notch 58, and as the lever 43 now bears against the pin 61 on the plate 16 shutterrelease is impossible. To ensure that the shutter cannot be released until the film has been fully wound, the segmental ratchet 62 on the shaft 24 has pins 63, 64, the latter engaging the lever 66, disengaging the pawl 67 from the ratchet 62 and allowing return movement of the handle, and also, through the spring 71, turning the lever 69 to cause the notch 74 to engage the flange 73 on the lever 66, keeping the pawl 67 out of engagement with the ratchet until the pin 63 strikes the flange 75 on the lever 69 and disengages the flange 73 from the notch 74.
Patent GB-1128132-A (GB)
Title: Drive mechanism
Inventor: ROPER DANIEL WILLIAM
IPC: F16H48/16
Filed: 1967-03-23
Abstract: 1,128,132. Ratchet clutches; differential gears. EATON YALE & TOWNS Inc. 23 March, 1967 [25 March, 1966], No. 13803/67. Headings F2C and F2D. A limited-slip bevel differential, Fig. 1 (not shown), is actuated by a jamming roller clutch incorporating a viscous shear coupling operating to ensure locking of the clutch at a predetermined value of slip irrespective of temperature. As shown the clutch rollers 66 are carried by a cage 65, a pair of opposite rollers 66a being urged into recesses 61 in the inner race 60 by springs engaging the cage 50 to normally hold the clutch free. The cage 50 is immersed in a viscous liquid and is made of a material having a high coefficient of thermal expansion in relation to the inner and outer races 60, 70 and has a flange portion 101 providing a shear film 103, the thickness of which varies with temperature to compensate for variation in viscosity of the liquid, so that the clutch engages at a substantially constant value of slip. In a modification, Fig. 4, the cage flange 101<SP>1</SP> is made of material of low thermal expansion and engages a stepped ring 111 of high thermal expansion and which, as the temperature rises, expands to frictionally engage the flange and provide an additional shear surface 113.
Patent GB-377335-A (GB)
Title: Improvements in, or relating to, force feed lubricators
IPC: F16N13/04
Filed: 1931-05-09
Abstract: 377,335. Lubricating pumps. SAMMONS, H., Kayclan, Preston Road, and PETTERS, Ltd., Westland Works, both in Yeovil, Somerset. May 9, 1931, No. 13814. [Class 102 (i).] In a lubricating pump the plungers of a measuring pump a and a feed pump o are operated by a yoke d embracing an eccentric b. The pump a supplies lubricant past a spring-pressed valve m to a sight-feed n, from which the lubricant is drawn through a passage p to the cylinder o and discharged through a passage r. In order to regulate the feed, the plunger a is formed with a bevelled surface e co-operating with the inlet port j, and the plunger carries a toothed sector f engaging a rack g, which is adjusted by the governor to vary the time of closing of the port j. Several . pumps may be adjusted simultaneously by the rack g, and, to permit separate adjustment of the pumps, each plunger may operate in a sleeve s formed with an inlet port j<2> and groove j<3>, the sleeve having teeth u engaging a handoperated worm.
Patent GB-594514-A (GB)
Title: Improvements in or relating to projectiles operating with rocket propulsion
IPC: F42B10/14
Filed: 1940-09-04
Abstract: 594,514. Rockets. BURNEY, SIR C. D. Sept. 4, 1940, Nos. 13864 and 17719. [Class 9 (i)] In a rocket intended to be discharged from a barrel wholly or mainly by its own propulsive charge, the rear part embodying a single axial nozzle is made of less diameter than the main body and carries expanding stabilizing vanes projecting radially from the rear part, whose area is limited by the wall of the projecting barrel until the rocket leaves said barrel, whereupon the area or effective mean radius of the vanes is automatically increased by expansion of said vanes. As shown, the rocket charge is builtup in sections 5, 6 of cordite tubes, each supported by grids 7 which serve to hold back solid particles from discharge with the gases. The propulsive force is applied to the base of the head portion 1, so that the casing 2, 3 of the rocket charge may be made thin and the centre of gravity kept well forward. A gas check ring 8 or a driving band is provided at the forward part of the tail casing 3. The nozzle is provided with a spring- loaded valve 16 adapted to ensure a constant. internal pressure. The loading spring 18 may be adjusted by a collar 19 according to the prevailing temperature, and the stem 17 on which the collar is adjusted may be provided with a scale of temperature to facilitate the adjustment. Fixed vanes 9 are provided around the nozzle, and additional vanes 10 are hinged at their front ends to a slidable ring around the tail casing 3 and at their rear ends have pin-and-slot connections 14, 15 with the fixed vanes 9. This enables the vanes 10 to move back and radially outwards after the discharge of the rocket from the barrel. In a modification, the movable vanes are hinged on fixed pivots and their outward movement is limited by interengaging stops between them and the fixed vanes. In still another modification, the movable vanes are connected to the fixed vanes by a number of pin-and-slot joints. The vanes may be straight or inclined and flat or curved and may be attached to a hub rotatable about the axis of the rocket. Specifications 594,513 and 594,515 are referred to.
Patent GB-841289-A (GB)
Title: Improved method of making polymer latices
IPC: C08J3/07
Filed: 1957-05-01
Abstract: Polymer latices are prepared by distilling an aqueous emulsion of a solution of the polymer in a solvent in the presence of a water-soluble hydrocarbon-insoluble compound capable of forming an azeotrope with the solvent, to separate the solvent from the aqueous polymer dispersion.  Polyisobutylene, synthetic rubbers such as butyl rubber, butadiene-styrene, butadieneacrylonitrile, iso-butylene-styrene, and petroleum resins from steam-cracked petroleum streams are specified and may be dissolved in hydrocarbons and chlorinated solvents which are listed.  The emulsion is prepared using a colloid mill homogeniser or dispersator by adding the polymer to an aqueous emulsion of the solvent or by adding a solution of the polymer to water.  The azeotropic forming solvents are methyl alcohol, methyl acetate and ethyl alcohol and are present in the aqueous emulsion of the solvent or in the water used to form the emulsion.  The emulsion is finally stripped of the solvent mixture at atmospheric pressure preferably at low temperature and with wet nitrogen or steam.
Patent GB-769978-A (GB)
Title: Improvements in and relating to electric tracer heads
IPC: G01D5/20
Filed: 1955-05-13
Abstract: 769,978. Electric correspondence control systems. GENERAL ELECTRIC CO. May 13, 1955 [May 13, 1954], No. 13923/55. Class 40 (1). In an electric tracer head for automatic copying machines two pairs of cored primary coils 4, 5 and 14, 15 are disposed at right angles and supplied with voltages in quadrature, the stylus carrying a cored secondary coil 29, normally symmetrical with respect to the primary coils, but deflectable in the plane of the four primary coils so that a voltage is induced in coil 29 whose components in phase with the 2- phase supply to the primary coils are indicative of the extent and direction of the deflection.
Patent GB-1145075-A (GB)
Title: Semiconductor device
IPC: H01L21/00
Filed: 1966-03-29
Abstract: 1,145,075. Semi-conductor devices. MATSUSHITA ELECTRIC INDUSTRIAL CO. Ltd. 29 March, 1966 [7 April, 1965], No. 13926/66. Heading H1K. A semi-conductor device comprises a body, doped with two deep-level impurities, and two area contacts, the device having a negative resistance characteristic. The body may be of Si, Ge, GaAs, GaP, or GaSb, and the deep-level impurities may be selected from Au, Co. Cu, Ni, Fe, Zn, Mn. In a first example a body of Si doped with Au and Co is provided with two Au electrodes to produce a symmetrical double injection diode. In a second example a degenerate P+ + type region is formed in a body of GaAs doped with Cu and Mn by diffusing-in Mn and alloying with Sn, and an N+ region is formed in the opposite face by alloying with Sn to form a P+IN+ diode. In a third example a body of Ge doped with Cu and Fe is treated to form a P+NIN+ structure. Mention is also made of switching elements and controllable rectifiers.
Patent GB-703466-A (GB)
Title: Improvements in or relating to pipe or rod joints
IPC: F16L37/10
Filed: 1952-06-03
Abstract: 703,466. Pipe or rod joints. SERTILLANGE, M. June 3, 1952, No. 13944/52. Class 99 (1). A pipe or rod joint comprises like coupling members C having spaced, longitudinal, interengaging projections L provided with ribs r forming an interrupted screw-thread, a nut E on each member screwing on to the thread of the other member until the nuts abut. Each nut is retained on its coupling member when the joint is uncoupled by the screw-thread and a collar n.
Patent GB-201309-A (GB)
Title: Improvements relating to furnace grates
IPC: F23H11/04
Filed: 1922-05-17
Abstract: 201,309. Steele, L. J., Kent, E. F., and Madden, G. A. May 17, 1922. Fire-bars and grates.-A travelling or fixed grate is formed of fire-bars comprising, as shown in Figs. 1 and 3, transverse bars c to which are secured by bolts f caps or frames d having bars e of tapering cross section cast integral therewith. Lugs g on the bars c engage with recesses h in the defending portions of the caps or frames. Transverse partitions j, j<1> are provided at intervals for strengthening purposes. The upper faces of the bars e are fluted, and the end caps or frames are formed with inclined surfaces l to rest upon guides.
Patent GB-653023-A (GB)
Title: Improvements in or relating to covers for preserving jars and the like
IPC: B65D51/16
Filed: 1948-05-25
Abstract: 653,023. Jar &c. covers. DAVIES, D. E., and KLOET, H. C. May 25, 1948. No. 14034. [Class 125 (iii)] A rubber or other elastic cover A for a preserving jar has an integral flange B on its underside for gripping the neck of the jar around the periphery and means to permit the escape of gas from the jar, e.g. on heating, and to check any subsequent return of gas, the flange being so dimensioned as to permit jar necks E<SP>2</SP>, E<SP>1</SP>  approximating to two different standard sizes, e.g. 2 lb. and 1 lb., to be operatively engaged by its outer and inner peripheries respectively. The inner and outer surfaces of the flange are formed with a plurality of circumferential ribs C, D, which may be of wedge shape, preferably with the upper side more steeply inclined to the flange than the lower side. A bevel F or radius G is preferably provided at the junction of the flange with the body to fit the rounded lips of the necks E', E<SP>2</SP>. Immediately above the flange B the cover is formed with a concentric preferably V-section groove L to increase the flexibility, and the marginal portion at the base of the flange B may be reinforced by a brass &c. stiffening ring. The cover is provided with a tapered vent hole H which is subsequently closed by a tapered slug I, e.g. of stainless steel, with a spherical or other head J, and may be permanently mounted by providing an enlargement M at the lower end of greater diameter than the lower end of the vent hole. The length of the vent hole may be increased by providing the cover with a central pip K or with a flat underside and convex upper surface, to increase the contact area between the hole and the plug. The plug I may be retained by a strap &c. separate from or integral with, the cover. In the embodiment shown in Fig. 7, a selfclosing vent is provided by longitudinal slots O at the three edges of the apex of a pyramidal pip N which lead into a conical cavity P. A flange may also be provided on the upper surface of the cover so that it can be used with jars of at least three different sizes.
Patent GB-1323641-A (GB)
Title: Method and apparatus for inflating fluid passageways in metal strip
IPC: B21C37/14
Filed: 1971-05-10
Abstract: 1323641 Making tubing by fluid inflation; stamping OLIN CORP 10 May 1971 [13 May 1970] 14052/71 Headings B3A and B3Q Apparatus for inflating a passageway in metal strip 1 includes a coil supply 10, severing means e.g. shears 40 spaced between pinching means 30 and inflating means 20, so that after each length of strip has been inflated and severed, the strip at the end of the supply has an open passageway for insertion in the inflation means. The strip 1 comprises superimposed strips (3), (4), Fig. 1A (not shown), pressure welded together with a stop-weld pattern between them to allow the formation of one or more longitudinal passages. The strip is fed by the pinching means 30 and only the first strip length from the supply 10 requires the ends of the passageways pried open prior to inflation. The means 20 comprises a clamping device 22 and a number of inflation needles 21, which are supplied with compressed air by a pump 26. Alternatively, the end of the strip 1 may be held by plates 50, 51, Fig. 3, to which are fitted 0-rings 52, 53. The rings partially close the ends of the tubes and form a pressure cavity for fluid under pressure. The rolls of the pinching means 30 may be replaced by clamping blocks (60), in which case alternative strip feed means is provided, Fig. 6 (not shown). Where the strip contains only a single tube, its edge portions may be formed into fins, prior to inflation, by slitting and bending operations which take place between the shears- 40 and the inflation means 20. Inflation may take place as the strip is fed from the supply 10, in which case the inflation means is mounted on a carriage movable along fixed rails.
Patent GB-593101-A (GB)
Title: Improvements in or relating to electric pulse modulating circuits
IPC: H03K7/04
Filed: 1945-06-04
Abstract: 593,101. Pulse modulation. STANDARD TELEPHONES & CABLES, Ltd. June 4, 1945, No. 14072. Convention date, July 24,1944. [Class 40 (v)] A pulse time modulator comprises a retardation circuit to which a train of pulses is applied and means for varying its retardation characteristics in accordance with the modulating signal. In one embodiment, the anode circuit of a signal amplifier 10, Fig. 1, includes the permeable-cored coils 4, 5, &c. of a retardation network 3. The pulse train from source 1 is applied to the network, each pulse being delayed by its passage therethrough by a time interval depending on the inductance of coils 4, 5, &c. which is varied by the signal amplifier output current therein. In a modification, the inductance of the delay network comprises the secondary of a transformer, the primary of which is in the signal amplifier output circuit, Fig. 3 (not shown). In a further embodiment, Fig. 4, the retardation of the pulses is varied by constituting one of the capacitances of the network 3 as a condenser-microphone 17, speech waves causing a direct variation of its capacity.
Patent GB-273458-A (GB)
Title: Improvements in liquid fuel burners
IPC: F23N1/00
Filed: 1926-06-03
Abstract: 273,458. Marks, E. C. R., (Williams Oil- O-Matic Heating Corporation). June 3, 1926. Revolving - cylinder pumps; cam - actuated pumps; stroke, varying.-Liquid fuel is supplied through an atomizing chamber 7 to a burner heating a steam or hot water boiler by a pump comprising a piston or plunger 21 which is reciprocated against the pressure of a spring 22 in a cylindrical chamber 20 formed in a rotating member 16 by engagement with a ring 25, the eccentricity of which is adjusted according to the pressure or temperature in the boiler against the pressure of springs 33 by a cam 35. The fuel is drawn by the pump from an arcuate reservoir 14 in the casing 10 through a port 15 in a hub 13 and is pumped through a port 27 in the hub 13, a discharge conduit 29, and a pipe 30 to the atomizer chamber 7. The pump is arranged in a chamber 9 formed in the casing 10. The chamber 9 is supplied with fuel by a pipe 12 and communicates with the reservoir 14. The ring may be held in position by means of screws 32 when not required to be adjusted automatically.
Patent GB-662893-A (GB)
Title: Improvements in closure caps for bottles
IPC: B65D39/04
Filed: 1949-05-26
Abstract: 662,893. Milk-bottle closures. SMITH, H. May 25, 1950 [May 26, 1949], No. 14101/49. Class 125(iii). A closure cap consisting of a stout paper disc moulded at its periphery to have a flange a which fits over the lip b of a milk bottle c and having a cylindrical boss d which fits into the mouth of the bottle has concentric shallow grooves e moulded on the underside of the boss d to render the cap rigid.
Patent GB-475577-A (GB)
Title: Magnetically-operated electrical interrupter
IPC: H01H3/00
Filed: 1936-05-18
Abstract: 475,577. Rectifying alternating currents. ALLGEMEINE ELEKTRICITATS-GES. May 18, 1936, No. 14114. Convention date, May 17, 1935. [Class 38 (ii)] [Also in Groups XXXVII and XXXVI] A magnetically-operated electrical interrupter comprises a magnet supported so as to be capable of oscillation in one plane, as by being mounted on a flat spring, and to actuate a make-and-break device in so doing, the magnet being disposed in a rotary magnetic field in such a way that this field causes the magnet to oscillate in said plane, the magnet and its support being mounted in such a way that the plane of oscillation of the magnet in the field can be rotated. As shown in the Figure, a Gramme ring 1 is wound and energized by A.C. to produce a rotating magnetic field and within the ring is mounted so as to be angularly adjustable a permanent magnet 2 carried by a blade spring 3 with contacts 4 on opposite sides adapted to co-operate with relatively-fixed contacts 5, 6 also carried by blade springs. As the magnet is only free to oscillate in one plane, adjustment of its angular position within the ring 1 varies the phase displacement of the contact engagement with relation to the phase of the current energizing the ring. Thus, if the interrupter is employed as a rectifier, this rectified current being fed to a measuring instrument, the phases of two electrical quantities may be compared by comparison of the angle shown by the indicating dial 10 through which the knob 7 is rotated to the positions in which maximum deflections are obtained. The period during which the contacts remain in engagement during the vibration of the magnet 3 may be varied by adjustment of the screws 8. Alternative methods of producing a rotating field may be employed as, for example, a shaded-pole electromagnet or rotating permanent magnets. As the contacts are mounted near the fixed ends' of the blade spring, carrying the magnet, the screws 8 may be adjusted so that contact is made during almost the whole movement of the magnet.
Patent GB-514997-A (GB)
Title: Improvements in or relating to resistance elements
IPC: H03H7/24
Filed: 1938-05-12
Abstract: 514,997. Impedance networks. COLLARD, J. May 12, 1938, No. 14133. [Class 40 (iii)] In a network, e.g., an attenuator, that is required to have constant impedance over a wide frequency range and comprising resistances that exhibit shunt capacity C and inductance L at high frequencies, the effect of such capacity and inductance is eliminated by a suitable relationship between L, C and R and by making L/R the same for all such resistance elements. In particular L/C=¢R<2> and reactive elements are added to produce substantially pure resistance. Fig. 1 is a section of the attenuator of Specification 362,472, but A and B at high frequencies can be represented by Fig 2, having L and C. By making L/R the same for all resistances and L/C =¢R<2> (as by adding parallel capacity) the network is designed to have substantially constant attenuation. Since the characteristic impedance of the network is no longer resistive, the input should be shunted by the network of Fig. 3, the elements L, C being chosen to give a resistive impedance in conjunction with the attenuator. Where R, Fig. 3, itself exhibits inductance and capacity, C and L must be modified in value, Fig. 4 (not shown). The resistances may have reactive impedances added to render them independent of frequency, e.g., RLC, Fig. 5, may be in series with R and L or in series with LC, Fig. 6, or a network such that Z1Z2=R<2>, Fig. 7, may be added. Stray shunt capacity of leads may be eliminated by. adding series inductance Figs. 8, 9, 10 (not shown).