baber/WOPTO huggingface dataset:
Patent GB-971645-A (GB)
Title: Servomotor control and indicating system
IPC: G05D1/06
Filed: 1961-02-27
Abstract: 971, 645. Measuring electrically. BENDIX CORPORATION. Feb. 27, 1961 [March 2, 1960], No. 7109/61. Heading G1N. In apparatus responsive to a variable, comprising a sensing device which produces an electric signal, the proportionality factor between the variable and the signal being non-uniform over the range of variation of the variable, and including a servomotor controlled, through an amplifier, by the signal, and means producing a rate feedback signal, an adjustable element is automatically adjusted, as the magnitude of the variable increases, to increase the gain of the amplifier and simultaneously to decrease the rate feedback signal ratio so as to compensate substantially for the variation in proportionality factor. In an aircraft altimeter, Fig. 2, a barometric capsule 105 displaces the armature 111 of a differential transformer 113, the output of which is pre-amplified in a triode 133 and fed via a main amplifier 53 to the control winding of a 2-phase servomotor 59 which positions, through a gear-reducer 65, the pointer of an altitude indicating instrument. To enable the indicating instrument to have a linear, scale, despite the non-linear relationship between altitude and pressure, a motion translator 74 is provided in the follow-up shaft 73 which restores the null relative position of the armature by moving the transformer core 117. A tachogenerator 77 driven by the motor 59 provides rate feedback to triode 133. A variable resistor 30 is adjusted by movement of motor 59 so that, as altitude increases, an increasing proportion of the rate feedback signal leaks to earth and a decreasing proportion is applied degeneratively to triode 133, so increasing the gain of the pro-amplifier stage. This compensates for the decreasing strength of the incremental output signal from the transformer 113, keeping the sensitivity and response speed of the system approximately uniform at all altitudes. Resistor 92 constitutes an optional feedback loop from output to input of the multi-stage amplifier, the effect of which is also dependent on the adjustment of rheostat 30. Fig. 1, not shown, depicts a similar system in which a transistor is substituted for triode 133 in the pre-amplifier stage. The sensing device may alternatively comprise a pressure-sensitive ionization gauge of the type described in Specification 863, 562.
Patent GB-577939-A (GB)
Title: Improvements in the directive propagation of electro-magnetic waves
IPC: H01Q19/19
Filed: 1941-06-06
Abstract: 577,939. Directive wireless signalling. DOWSETT, H. M. June 6, 1941, No. 7186. [Class 40 (v)] A beam of rotational symmetry about the axis of a dipole AOB is produced by an elliptical or spherical-elliptical reflector bac having its main focus O at the centre of the dipole and conjugate foci in a ring P centred on the main axis, the radiation from these foci being reflected by the surface de of an inverted cone reflector on the main axis. The generator of the cone may be straight as in Fig. 2, or of parabolic form, Figs. 3 and 4 (not shown), the surface curvature of the cone causing the radiation to be reflected in each axial plane at the required angle of divergence. The dipole and elliptical reflector may be underground, and the conical reflector above ground. The spherical part ba of the reflector bac reflects part of the radiation back through the focus O so that it is in phase with the part of the radiation falling on the elliptical part ac of another part of the reflector riot shown in Fig. 2, which shows' only a half-section of the reflector. The upper part of the reflector bac may be elliptical and the lower part spherical as in Figs. 3 and 4 (not shown).
Patent GB-969945-A (GB)
Title: Fastening devices
IPC: F16B19/05
Filed: 1963-02-22
Abstract: 969,945. Rivets and eyelets. HUCK MANUFACTURING CO. Feb. 22, 1963 [Oct. 22, 1962], No. 7210/63. Addition to 956,518. Heading F2H. [Also in Division B3] A modification of the fastener described in the parent Specification comprises a collar 6 having a soft outer sleeve 9 with a hard inner ring member 10 with longitudinally extending annular projections 12, 13 and 14 in the bore thereof. Outer annular projections 15 and 16 at each end of the inner ring overlie the inward projections so that the extra material provided by the projection 15 or 16 may be displaced radially inward into the surface of the pin to form the location of the breakneck during the swaging operation. A further annular projection 18 intermediate these 15 and 16 may be provided to form an interlock between the ring 10 and sleeve 9 when a joint is made. The inner ring has longitudinal slots 19 and 20 which extend from each end respectively for a portion of the length of the ring.
Patent GB-137958-A (GB)
Title: Improvements in automatic coin-operated telephone calling apparatus
IPC: H04M17/02
Filed: 1919-03-24
Abstract: 137,958. Fletcher, T. M. March 24, 1919. No Patent granted (Sealing fee not paid). Hiring telephones; coin action, eiectric-connexion and multiple-coin.-In coin-freed telephone apparatus of the kind in which coins are inserted in succession, the insertion of each being signalled to the operator, a shoot a is provided with an open inclined portion b in which a number of coins c, for example three, are placed, the foremost coin being retained by a detent d on a tumbler f pivotally mounted at r. The tumbler is oscillated by the operation of a slide i returned by a spring m and carrying a depending arm j on which is mounted a weighted pawl n. The pawl n is tilted by the weight of a coin to engage a contact v and, together with the coin, makes connexion between this contact and a block o. A pivoted bar p is mounted so as to be engaged by the tumbler f when this is rocked, and thus retains the first coin after it has passed the detent d until the slide is returned to normal position. The coin then drops into contact with the end u of the pawl n and completes the circuit, but is retained in the shoot until the pawl is moved away by the succeeding operation of the slide. The oscillation of the tumbler allows the second coin to take the place of the first in readiness for a second operation of the slide. Operation of the apparatus by lead or brass disks is detected owing to the lower conductivity of such, which produces a weaker action of the signalling-bell. Gripping-bars may be arranged in the shoot to prevent fraud by a coin tied to a string.
Patent GB-142978-A (GB)
Title: Improved dressing and toilet table
IPC: A47B67/00
Filed: 1919-03-24
Abstract: 142,978. Neighbour, R. C. March 24, 1919. No Patent granted (Sealing fee not paid). Looking-glasses and mirrors. - Dressing-tables and like toilet furniture are fitted with mirrors of the kind described in Specification 14503/12 adapted to be adjusted to various positions. Each mirror 8 is adapted to turn about two pivots 11, 14, Fig. 4, arranged at right-angles at the upper end of the arm 5. The fittings 4 to which the lower ends of the arms 5 are pivoted are provided with pivot pins 3, Fig. 3, for engagement with any one of a number of holes in the table top.
Patent GB-511074-A (GB)
Title: Improvements relating to metal pillars or stanchions for use in the construction of partitions for rooms and the like
IPC: E04B2/78
Filed: 1938-03-10
Abstract: 511,074. Partitions. HARRIS & SHELDON, Ltd., SANKEY & SONS, Ltd., J., and BUTLER, H. G. March 10, 1938, No. 7455. [Class 20 (iv)] A metal pillar for use in the construction of partitions comprises a pair of vertical channels 1 secured together, with the hollows of the channels towards one another, by coupling- plates 7 which are connected to the sides of the channels by attachment means comprising hooks or projections 10 on the one cart engaging holes 11 in the other part, the coupling-plates having, intermediate the attachment means, spacing ribs or parts 8 which fit between, and separate, the two vertical channels. Each of the channels 1 is formed with a central groove 2, which receives a panel 5, and inturned side flanges 4. Each coupling-plate 7 is of channel cross-section having narrow side flanges 9 extending therefrom and terminating in a beading 12 having an inwardly-projecting flange 13. The channel portion 8 of each plate 7 fits between the flanges 4 of the channels 7 so that the flanges 9 seat against the side flanges 3 of the channels and the flanges 13 engage the outer faces of the bases of the channels; hooks 10 or studs provided on the flanges 9 are adapted to engage apertures 11 in the flanges 3. The plates 7 are arranged opposite each other in pairs, and each pair of such plates is arranged to support an H- shaped plate 14 which is forced down between the opposed channels 1 so as to press the latter against the flanges 13 of the plates 7; the branches 14a of the plate 14 fit around the grooved portions 2 of the channels 1. A cover plate 15 which is fitted on each side of the pillar member is of shallow channel cross-section with inturned lips 16; the plate 15 is adapted to be sprung over the beadings 12 of the plates 7. The cover plates 15 on opposite sides of the partition provide between them rebated portions for the reception of either panels 6 on opposite sides of the panel 5, or the ends of horizontal cross-bars or transoms. The bottom of the pillar member may be prevented from movement by the upstanding flanges 17a of an H- shaped base plate 17 which is secured to the floor. The top of the pillar member may be engaged by a member somewhat similar to the base-plate 17, but used in inverted position; this member is secured to a cornice in the channels 1 and into the spaces between the flanges of the member. Where three sides of the pillar are to support partition panels, one of the cover plates 15 is formed with a central groove to receive the edges of adjacent panels 5, and this cover plate may also be rebated to receive panels 6 on each side of the panel. The other cover plate may be similarly formed where four partitions meet at right angles. Specification 486,052 is referred to.
Patent GB-507357-A (GB)
Title: Colour photographic material
IPC: G03C7/28
Filed: 1938-03-10
Abstract: 507,357. Multilayer material for colour photography. GASPAR, B. March 10, 1938, No. 7488. [Class 98 (ii)] Colour photographic multi-layer material comprises at least one coloured silver halide emulsion layer which has a considerably lower sensitivity to the light absorbed by the dyestuff in the layer and used for the exposure of the superimposed layer or layers. In an example, three silver bromide gelatine emulsion layers are arranged upon one or both sides of a transparent support, the middle layer emulsion being unripened and having an inherent blue sensitivity which is about one-tenth of that of the other emulsion. The unripened emulsion is dyed yellow with an image forming dyestuffwhich may be Chrysophenin G rendered insoluble by treatment with triphenyl guanidine lactate, and is sensitized to green with erythrosine. The two outer layers are not specially sensitized and are dyed blue-green and magenta with Pontamine Sky Blue and Tuchechtbrillantrot 2B respectively. This material is used for printing, exposure being from both sides. If neither or only one of the other layers is coloured, one of them may be sensitized to red, and in this case the support may be opaque with all the layers on one side and separated by clear gelatine layers, exposure being from the side of the blue layer. The dyestuff images are prepared as described in Specification 397,159. Specifications 408,991, 415,040, and 421,534 also are referred to.
Patent GB-917127-A (GB)
Title: Roof drain
IPC: E04D13/04
Filed: 1961-03-01
Abstract: 917,127. Roof-drainage. NEWMAN, J. S. March 1, 1961, No. 7518/61. Class 33. A surface drainage structure for use with roofs or like surfaces comprises a drain body 10 with a flat undersurface 11 to engage with the roof 13; a peripheral flange 15 integral with the body 10; an inlet grating 16 as shown detachably attachable to the body 10; a tubular outlet 18 leading from the body 10 (attached to it) having a flange 19 making seating contact with the roof 13; and an extension member 27 from the outlet fitting in overlapping and telescoping relation therewith. The flange 15 is discontinuous for complete drainage and through it pass screws 17 to hold the grating 16 seated on body 10. A slidable collar 23 fits around the outlet fitting 18, is adjustably clampable thereto by screws 24 and has an integral flange 25 to clamp against the slab 20 of the roof 13. The fitting 18 or a neck 26 thereof telescopes into the extension member 27, a sealing ring 31 seated on an abutment 30 and deformable by a pressure ring 32 being located between the member 27 and the neck 26 as shown. The member 27 is threaded to connect with a drainage system.
Patent GB-1515098-A (GB)
Title: Wired broadcasting systems
IPC: H04H20/76
Filed: 1975-07-30
Abstract: 1515098 Programme exchange systems COMMUNICATIONS PATENTS Ltd 30 July 1975 [6 Aug 1974] 07545/77 Divided out of 1512376 Heading H4R In a wired broadcast system wherein each subscriber is connected to an exchange via an individual cable over which the subscriber controls an individual programme selector using first control signals to give access to one of a plurality of programme sources, one or more of the programme sources may be selectively controllable using second control signals to which his individual programme selector is unresponsive. In a first embodiment the individual selector 55 is controlled using D.C. pulses produced by a dial selector and one or more outlets of the selector are coupled to further selectors 56, 57 which are controlled using frequency tones sent by the subscriber, a further selector 56 and multiple programme source 59 constituting a selectively controllable programme source. Alternatively, the selectively controllable source may be educational video records or a digi-TV machine in which a multi track magnetic drum or disc carries on each track a recording of one television picture frame. Such a machine may be associated with a computer store from which a piece of information selected by the subscriber may be transferred on to one of the tracks. For information to be used by one or a small group of subscribers a "dedicated" programme output can be provided as disclosed in Specification 1,420,628.
Patent GB-512687-A (GB)
Title: Improvements in and relating to adjustable lamp shades
IPC: F21V21/08
Filed: 1938-03-11
Abstract: 512,687. Lamp shades. DUKE, A. M. March 11, 1938, No. 7601. [Class 75 (ii)] By providing the shade 11 wilh a ring 8 as showing engaging corrugations 5<1> on the springy arms 12 upstanding from a wire support 5, the shade can be given a certain amount of tilt and be held tilted. The corrugations can be inside the arms, and the ring is then also inside, and shoulders 13 limit the tilting.
Patent GB-491167-A (GB)
Title: Improvements relating to gas heated grilling and like apparatus
IPC: A47J37/06
Filed: 1937-03-16
Abstract: 491,167. Grilling &c. stoves. RADIATION, Ltd., YATES, H. J., and STRINGER, W. L. March 16, 1937, No. 7648. [Class 126] In gas-heated grilling, toasting, or like apparatus, a shallow hollow metal body a is mounted horizontally in the upper part of a chamber i with heat-insulating walls, and is provided with an inlet b and an outlet e for the hot gases produced by a burner d which is situated immediately adjacent to the inlet b. The body a has vertical longitudinal partitions f. In a modification, both inlet and outlet are at the same end of the body a, and a horizontal partition ensures that the hot gases flow to the rear and then forward. A thermostatic element controlling the burner d is mounted in a hollow boss g in the body a. To support the body a, lateral lugs p on the latter are secured to vertical metal rods o, which are screwed at their lower ends into nonconducting sleeves q. Screws r hold these sleeves in position. The ends of the screws rand rods o are separated. The chamber i is provided with a weight or spring- controlled door j which is hinged at its lower edge, and which can be moved inwards so that when in the bottom position it lies on the bottom of the chamber i.
Patent GB-1392177-A (GB)
Title: Timer unit
IPC: G04C23/22
Filed: 1971-03-24
Abstract: 1392177 Time switches HORSTMANN GEAR CO Ltd 24 March 1972 [24 March 1971] 7682/71 Heading H1N A timer unit comprises a battery-powered electric clock mechanism, having a magnetic escapement, which is connected to and drives a rotary control member arranged to control a predetermined timed sequence of electrical switching operations, the rotary control member being arranged to make one complete rotation every 24 hours. Preferably the rotary control member forms part of a control unit of the kind described in Specification 824,687 and is adapted to control street lamps or storage heaters. Preferably the clock mechanism has a tuning fork synchronized to a quartz crystal-controlled oscillator.
Patent GB-566246-A (GB)
Title: Improvements in non-skid chains for twin-tyred vehicle wheels
IPC: B60C27/20
Filed: 1943-05-14
Abstract: 566,246. Tread bands for vehicles. KENNEDY, D. S. May 14, 1943, No. 7713. [Class 79 (i)] [Also in Group XXXIV] A non-skid device for twin-tyred vehicle wheels comprises transverse tread members a coupled together by two chains b, engaging respectively flaps d pivoted to the outer ends of the shoes and members f rigidly secured to them near their centres, the chain engaging the members f lying between the two tyres and the members a extending at least partly across the inner tyre. The two chains maintain the tread members in their correct transverse positions, whilst the free overhanging inner end of the treads will not foul the chains even when there is small clearance between it and the inner tyre. The tread members consist of twisted elements as described in Specifications 465,639, and 539,065, [Group XXXIV]. Specification 367,249 also is referred to.
Patent GB-382198-A (GB)
Title: Improvements in and relating to multiple valves
IPC: F04B39/10
Filed: 1932-03-16
Abstract: 382,198. Non-return valves. AKT.- GES. BROWN, BOVERI, ET CIE, Baden, Switzerland. March 16, 1932, No. 7796. Convention date, March 23, 1931. [Class 135.] A non-return valve particularly applicable for use with high speed compressors comprises a tubular metal body 5 slotted parallel to its axis to form a number of tongues 4 co-operating with a series of ports 3 in the wall of the cylinder 1. The valve is secured in position by a flange 7 and a similar delivery valve may be housed in a ported casing inserted within the inlet valve. The tongues may have a tapered longitudinal cross section so as to give a uniform bending moment and the cylinder wall or the tongues may be recessed above the ports.
Patent GB-202347-A (GB)
Title: Improvements relating to electric contact breakers
IPC: H01H3/00
Filed: 1922-03-17
Abstract: 202,347. Elverson, A. J. H. March 17, 1922. Make-and-break switches, mechanical; contacts.-In contact-breakers having a flat spring a supported at both ends, an auxiliary spring is anchored to one end of the spring a and engages with it to substantially the point of contact of the operating member k, which is normally held out of contact by a spring m and is acted on by a cam or like to give rapid make and break.
Patent GB-345083-A (GB)
IPC: G03B27/02
Filed: 1930-03-11
Abstract: 345,083. Photographic contact copying apparatus. PRIOU, P. A. M., 8, Rue Philippe-de-Comines, Chinon, Indre-et-Loire, France. March 11, 1930, No. 7938. Convention date, March 11, 1929. [Class 98 (ii).] A contact printing apparatus consists of a box containing the printing lamps and provided at one side with an opening in front of which a combination frame for holding the negative, sensitive paper, masks and vignettes is hinged so that it can be lowered over an illuminated compartment to enable centring and retouching to be carried out. In the form shown, the combination frame consists of a frame 4 against which the negative 6 is pressed by a frame 8 carried within a frame 7 which is held against the frame 4 by a spring hook 14. The sensitive paper is held in contact with the negative by a pressure plate 50 on an arm 47 hinged at 48 to the upper surface of the casing 1 which contains the printing lamps. Below the casing 1 is a drawer 30 in the front part of which is a compartment 31 covered by a ground glass plate 32 and containing a lamp 33 which is automatically lighted when the drawer is pulled out. The frame 7 may be lowered over this drawer for centring and retouching the negative which is then secured in position by the frame 4, the combination being then raised into printing position, the sensitive paper inserted and the pressure plate 50 lowered. Lowering this plate operates an exposure meter of known form. To replace the sensitive paper the plate 50 is lifted, a lever on the arm 47 causing the frames to swing outwards so that the paper falls out. The frames are returned by a counterweight, the movement being checked by a dashpot mechanism 40. The negative may be changed without separating the frames, by means of a rod 16 bearing cams which lift the frame 8 clear of the frame 4. Vignettes are held in a frame 27 mounted in front of the frame 4.
Patent GB-1119814-A (GB)
Title: Improvements in or relating to a bearing in a device for driving a record or sound film support
IPC: F16C27/06
Filed: 1967-02-20
Abstract: 1,119,814. Bearings. THORENS-FRANZ A.G. 20 Feb., 1967 [22 March, 1966], No. 7967/67. Heading F2A. A bearing for a device which drives a record or sound film support has a member provided with a conical surface which is coaxial with the axis of rotation of the bearing, and has another member provided with a resilient element which engages said conical surface. In an embodiment, a plate 1, Fig. 2, of a turn-table is carried by a shaft 24 having a cone-shaped portion 26 engaged by a resilient-member 27 and having a cone-shaped recess at the lower end thereof which has a ball 25 mounted therein. The resilient-member 27 is made of synthetic resin; has an annular portion 41, Fig. 3, from which extend six radial corrugated arms 31, the pairs of which are connected by segments 32; and is secured to a platen 3, Fig. 2, by screws 29. The platen 3 extends to a sleeve-shaped portion 19, the lower end of which is screw-threaded to receive a screw 20 therein, so that a washer 23 of synthetic resin is retained in the sleeve-shaped portion and is abutted by the ball 25 in the end of the shaft 24. In a modification, a cone-shaped portion is formed on the sleeve-shaped portion and the resilient-member is mounted on the shaft. In a turn-table the platen 3 is resiliently mounted on springs 12, Fig. 1, and the rotation of the plate 1 is effected by means of an electric motor 13 having a wheel 14 driving a rubbercovered wheel 15, an integral wheel 16 of which drives the plate I via a rubber band 17.
Patent GB-230642-A (GB)
Title: Improvements in or relating to means for adjusting fences for saw benches and the like
IPC: B23Q3/00
Filed: 1924-03-29
Abstract: 230,642. Robinson & Son, Ltd., T., Robinson, C. J., and Tweedale, J. March 29, 1924. Fences.-A saw-bench fence 1 is primarily adjusted by means of a rack 2 and pinion 6 mounted on a shaft 8 carrying a dial 11 adjusted by means of a handle 14 upon a plate 12 having a ring of holes 13 engaged by a spring pin 15 in the handle. A lever 16 is provided for raising the handle 14 so as to disengage the pin. A secondary adjustment is afforded by means of a pin 19 mounted in the main supporting bracket 4 and provided with an eccentric part 19<a> engaging a slot 20 in the plate 12, a spring lever 21 with a locking stud 22 being attached to the pin 19 and being arranged to work under a locking plate 24. A slot 25 and clamping bolt 26 may be provided for adjusting the dial pointer. The bracket 4 carries the rack 2 in a split bush 3, which may be tightened by means of bolts (not shown) for taking up wear.