baber/WOPTO huggingface dataset:
Patent GB-429228-A (GB)
Title: Improvements in or relating to objective units for photographic or cinematograph cameras combined with exposure meters
IPC: G03B7/02
Filed: 1934-06-18
Abstract: 429,228. Photographic and kinematograph cameras. ZEISS IKON AKT.- GES., 72, Schandauerstrasse, Dresden, Germany. June 18, 1934, No. 18008. Convention date, June 17, 1933. [Class 98 (i)] In an objective unit for cameras in which the iris diaphragm of the objective is coupled to an exposure meter carried by the camera so that adjustment of the meter automatically sets the diaphragm aperture, the member in the coupling which converts the adjusting movement of the meter into the appropriate movement of the diaphragm leaves is carried by the objective in order to permit any of several objectives to be used with the meter. The objectives may be carried in focusing mounts. As shown, an exposure meter 3, Fig. 1, is mounted on the camera front 1 adjacent to the objective mount 2, which may be secured as by a bayonet joint. Focusing provision is made in the mount 2 by securing the lens tube 10 to a tube 8 which is prevented from rotation in the mount by a pin and slot connection 12, 11 and carries a multiple screw thread 7 engaging a tube 6 having a fine external thread 5 engaging the mount 2. Focusing is effected by rotating a toothed wheel 4 mounted on the camera body and engaging a toothed gear on the tube 6. The exposure meter may be of the known kind comprising a sectorial grey wedge 14 mounted in an annular toothed wheel 15 and rotatable over a transparent scale 16 on which exposure times are marked, the adjusting wheel 15 meshing with a toothed segment 17 on a tube 18 which embraces the tube 8 and carries a pin 19 which extends through a peripheral slot in the tube 8 into a curved slot 21, Fig. 3, in a ring 22 which constitutes the conversion member. This ring is prevented from rotation by a pin and straight slot connection 25, 23 with the tube 8 ; and it is provided with a second curved slot 24 engaging a pin 26 on a ring 27 which has a fine and easilyrunning threaded engagement with the lens tube 10 and an aperture 29 in which engages a pin 30 on a ring 31 whose rotation moves the leaves of the diaphragm 13. Rotation of the wheel 15 to adjust the wedge 14 of the meter for a suitable exposure time rotates the segment 17, producing axial movement of the ring 22 and consequential rotation of the iris adjusting- ring 31. The slots 21, 24 are designed for each objective to correlate the meter adjustment with the diaphragm adjustment. A spring 32 connecting the tube 18 to the mount returns all the diaphragm-adjusting parts of the objective mount to their initial positions when the mount is removed for exchange ; the wedge adjusting-wheel 15 of the meter 3 is also returned by hand at the same time to its initial position. The Specifibation as open to inspection under Sect. 91 states also that the wheel 15 may be returned to its initial position automatically. This subject-matter does not appear in the Specification as accepted.
Patent GB-1199549-A (GB)
Title: A Composite Conductor Including Superconductive Material.
IPC: H01L39/14
Filed: 1969-04-08
Abstract: 1199549 Super-conductors SIEMENS A G 8 April 1969 [6 April 1968] 18040/69 Headings H1A A5 and A4D A composite conductor comprising a wire of super-conductor material embedded in a normal metal is ultrasonically welded to a portion of a second (different) normal metal. As shown, Fig. 2, wires 13 of Nb-Zr alloy enclosed in a Cu matrix 14 are embedded into the surface of an Al strip 12 by an ultrasonic welding process, the Cu enclosed wires being positioned on the strip and the assembly being passed between a rotatable sonotrode and an anvil roller. In alternative embodiments a pair of strips having grooves to receive the conductors are ultrasonically welded together. The conductors may each comprise a single circular cross-section wire of Nb-Zr alloy coated with Al, e.g. by electro-chemical deposition in an organo-aluminium bath, placed in grooves in a pair of Cu strips, Fig. 3 (not shown). Alternatively the conductors may each comprise a flat strip of Nb 3 Sn coated with Ag and placed between a pair of Cu or Al strips having rectangular grooves the dimensions of which are smaller than those of the conductors, Fig. 4 (not shown). Intermediate layers of In or Zn may be included between the different normal metal parts in any of the embodiments to produce a soldered joint at those points which do not weld together. A subsequent heat-treatment may be utilized to diffuse the material of the intermediate layer into the normal metal portions.
Patent GB-1413142-A (GB)
Title: Speed control system for video disc drives
IPC: H02P29/00
Filed: 1972-04-19
Abstract: 1413142 Automatic control of speed R C A CORPORATION 13 April 1973 [19 April 1972] 18045/72 Heading G3R A video disc recorder turn-table is driven by a motor at a speed which is nominally faster than the synchronous speed required and the necessary braking is supplied electromagnetically with the duty cycle of the supply to the electromagnet controlled in accordance with the speed error. In the embodiment shown the replayed signal from the disc is processed to obtain a composite video signal which is applied to the receiver 214. Additionally pulses are provided which correspond to the vertical synchronizing pulses and are inductively coupled to inductor winding 220 in the gate circuit of SCR 222. The SCR is in series with the electromagnet 224 and is energized from the mains supply. In operation any change in frequency of the replayed synchronizing pulses will cause the SCR to conduct for longer in each cycle and thus increase the braking effect applied to the turn-table 202. Since the motor 204 drives turn-table 202 nominally at a speed higher than required the change in duty cycle can cause the turn-table to slow down or to speed up. The drive preferably is through a belt made of elastic material which creeps and thus allows the speed of the turn-table to vary.  In a modification the replayed signal provides synchronizing pulses which are passed to the comparator through two paths, one of which contains a fixed delay. The comparator produces a binary output signal representing the timing difference between the pulses and this is used to control the percentage of time that braking is applied, Fig. 1 (not shown).
Patent GB-683532-A (GB)
Title: Improvements in or relating to machines for the manufacture of moulded ceramic or concrete tubes, such as land drain tiles
IPC: B28B21/26
Filed: 1949-07-08
Abstract: 683,532. Moulding ceramic or concrete pipes. JOHNSON, S. L. July 28, 1950 [July 8, 1949], No. 18055/49. Class 87 (ii).  In a pipe-moulding machine of the kind in which a mould packing die 15 is simultaneously rotated and reciprocated, moulds 33 are positioned one at a time between a top locator 27 on the bottom of a hopper 26 and one of a number of bottom locators 28 on a vertically movable platform 29 which may be a turntable. The platform is urged upwardly by a spring 31 to grip the mould. The die 15 is carried by a shaft 14 keyed to slide within a sleeve 13 which is rotated by a motor 3 through a clutch 8 and bevel gears 10, 11. The same motor also drives, through worm gear 16, 17, a cam 19 which, by means of a lever 21 pivoted at 20, reciprocates the die 15 in the mould 33. The cam is shaped to cause the die to dwell for an approximate period of one half-revolution at the top of its stroke, during which period the mould is changed.
Patent GB-423779-A (GB)
Title: Improvements in discharge cocks
IPC: F16K31/58
Filed: 1934-06-18
Abstract: 423,779. Valves. BENKISER-WERK AKT.-GES., and SCHENCK VON SCHWEINSBERG, JOHANN, EBERHARD, FREIHERR, 33, Richard Wagnerstrasse, Ludwigsburg, Germany. June 18, 1934, No. 18056. [Class 135] A discharge valve of the kind in which a lift valve member h is actuated by screwing a discharge nozzle c onto the end of the valve casing has the valve member and passage through the seating member so contoured that as the valve opens the cross-sectional area of flow gradually increases along the stream. The valve member h is fitted with a washer m and is rotatably mounted on a carrier o provided with two series of radial vanes p, q, the upper series resting on a shoulder in the discharge nozzle. The member o has an axial discharge passage r communicating through holes s with the main discharge passage. The lower end of the nozzle c may be enlarged and fitted with a series of spaced perforated plates w, x. The actuating handle which is screwed to the upper end of the nozzle c is made of compressed fibre and may be fitted internally with a stuffing box. A second valve member i guided by a cross and having a stem k resting on the valve member h is provided to cut off the flow when the main valve is removed for repairs.
Patent GB-1024003-A (GB)
Title: Covered receptacle
IPC: B65D51/14
Filed: 1964-04-30
Abstract: 1,024,003. Container lids; opening devices for containers. F. P. LARSEN. April 30, 1964 [May 6, 1963], No. 18066/64. Headings B8D and B8P. A covered receptacle comprises a hollow body 1 formed with a bottom 2 and a side wall 3 and closed by a cover 4 which holds down a loose cover-plate 7 having a presser surface 8 exposed through an opening 9 in the cover, wherein the cover 4 is provided with diametrically opposite finger-engaging projections 11. The coverplate may be transparent. A skirt 6 on the cover has an annular rib 10 on its inner face which prevents the cover-plate 7 from being removed.
Patent GB-833449-A (GB)
Title: Improvements in or relating to transducer
IPC: G01L1/22
Filed: 1956-06-12
Abstract: 833,449. Springs. STATHAM LABORATORIES Inc. June 12,1956 [June 13, 1955], No. 18101/56. Class 108(3) [Also in Group XXXVIII] A transducer for measuring pressure electrically comprises a diaphragm attached to a flexure member at points away from the edge of the diaphragm, at which are located strain gauge resistors or the armature of an E-type transformer, whereby the application of the pressure to the central region of the diaphragm causes the edges to be displaced by an amount which is sensed by the strain resistors or the transformer. In one embodiment (Figs. 1, 3) a diaphragm 27 is mounted on a base 21, the junction 26 being thin and flexible. A hole 25 in the base 21 allows the underside of the diaphragm to communicate with a pressure source. Symmetrically located on the edges of the diaphragm are four arms 33-36, carrying pins 40-43 between which are stretched resistor wires 44, 46, the ends of the wires being taken to terminals 45, 47 on the arms 33-36 for connection to a bridge circuit. When a pressure is applied to the underside of the diaphragm 27 via the hole 25 the diaphragm bows, causing the upper wires 44 to stretch and the lower wires 46 to relax, the changes in resistance being measured "by the bridge and being indicative of the applied pressure. The diaphragm and strain wires are surrounded by a cylindrical shield 54 containing a screw 57 in the cover 56 adjusted to limit the bowing of the diaphragm. In a modification to measure differential pressure (Fig. 5) both sides of the diaphragm 85 are open to pressure chambers 70, 79. In another embodiment for measuring force (Fig. 10) the bottom of the base 121 contains a flexible diaphragm 128 connected by a screwed rod 135 to the upper diaphragm 130 on which are mounted the pins carrying the strain gauge wires 154, 156. A force or pressure applied to the lower diaphragm 128 is transmitted via rod 135 to the upper diaphragm 130 producing a corresponding change in the resistances of wires 154, 156. By eliminating the lower diaphragm and attaching the rod 135 to a weight, the device may be used to measure linear acceleration along the rod. In a further embodiment (Fig. 12) the strain gauge wires are replaced by an iron armature 200 assembled on the edge of the diaphragm 188 and normally located symmetrically with respect to two similar coils 213, 214, whereby flexure of the diaphragm by a pressure on the underside causes the diaphragm to tilt the armature, thereby upsetting the balance between the inductances of coils 213, 214. The device may be supplied with a plurality of coil units and armatures at spaced intervals round the diaphragm. In all the above embodiments the connection between the diaphragm and the flexible support may be other than circular, and the supports need not be perpendicular to the plane of the diaphragm.
Patent GB-357564-A (GB)
Title: Improvements in or relating to wood oil feeders and methods of making the same
IPC: F16C33/18
Filed: 1930-06-13
Abstract: 357,564. Capillary-action lubricating. WHITE, A. E., 5, Quality Court, Chancery Lane, London.-(Nathan Manufacturing Co. ; 250, Park Avenue, New York, U.S.A.) June 13, 1930, No. 18172. [Class 12 (iii).] Plugs for feeding oil to bearings are cut from straight-grained wood such as pine and are immersed in a bath of heated oil, which may be lubricating oil. The bath is maintained at a temperature sufficiently high to cause the resin, moisture, and other natural pore-filling materials to be expelled from the wood without scorching the latter. If the oil in the bath is not lubricating oil, the plugs are then soaked in lubricating oil. Reference has been directed by the Comptroller to Specification 259,567, [Class 12 (iii), Lubricators &c.].
Patent GB-1014397-A (GB)
Title: Improvements in or relating to servo-motor control systems
Inventor: GRIFFITHS FRANK KENNETH
IPC: B66C13/22
Filed: 1963-09-08
Abstract: 1,014,397. Automatic controL FLIGHT REFUELLING Ltd. Sept. 3, 1964 [Sept. 8, 1963], No. 18190/63. Heading G3R. In a servomotor system for controlling variables, operation is in response to the unbalance of two mechanical forces, one dependent on the value of one of a plurality of selectable variables and the other dependent on the value of one of a plurality of selectable reference values. As shown, the pitch of blades 14 of an air turbine 11 on an aircraft is adjustable by a reversible hydraulic servomotor 15 so that capstans 12, 13 and a reel 10 are driven in one direction or the other to pay out or reel in a target (not shown) which is towed behind the aircraft on a cable 32. The tension in cable 32, which is caused by the difference in speed between capstans 12, 13 and reel 10 produced by a variable speed gear 28, is automatically maintained at a preset value by the loop tension detector shown controlling the variable speed gear 28 through a potentiometer, amplifier, electromagnetically operated control valve 34, and hydraulic servomotor 35. When the target is initially released from its support on the aircraft, a controller 46 selects the signal from a loop tension detector 39 for comparison with one of the signals from a group of preset potentiometers 42-45 so that tension is maintained at a predetermined minimum value by differential control of a hydraulic valve 16 associated with servomotor 15. When a predetermined speed of paying out is reached a tachometer generator 40 and another of potentiometers 42-45 are substituted in the control of servomotor 15 so that the speed is maintained constant until a predetermined length of cable, as detected by a pulse generator 53, has been payed out. Control of servomotor 15 by tension detector 39 is then restored but with a different preset potentiometer 42-45 so that tension is maintained at a higher value. In consequence, paying out slows down and changes to reeling in, whereupon a direction sensitive tachometer generator 54 causes application of a brake and feathering of the turbine blades to terminate control. A similar sequence of control for reeling in is described. The turbine is also stopped by the operation of a switch 50 if the cable breaks.
Patent GB-1036509-A (GB)
Title: Improvements in or relating to mining machines
IPC: E21C25/14
Filed: 1965-04-30
Abstract: 1,036,509. Cutter drum, mineral-mining machines. GEB. EICKHOFF MASCHINENFABRIK U-EISENGIESSEREI m.b.H. April 30, 1965 [May 8, 1964], No. 18213/65. Heading E1F. To facilitate discharge of mined mineral on to a face conveyer from a laterally extending cutter drum of a mining machine travelling along the conveyer there is provided between the gear head and the cutter drum of the machine an intermediate gear which is mounted on the face side wall of the gear head to project beyond the gear head to there support the drive shaft of the drum.
Patent GB-704183-A (GB)
Title: Improvements in or relating to apparatus for cutting paper and like sheet material
IPC: B26D7/26
Filed: 1951-08-02
Abstract: 704,183. Cutting-apparatus. TIMSONS Ltd., and TIMSON, E. A. July '21, 1952 [Aug. 2, 1951], No. 18330/51. Class 31 (1) In apparatus for cutting a travelling web W of paper or like sheet material into sheets comprising a fixed knife 13 and a knife 10 set in a rotary component 9, the knives being mounted for adjustment together in a subframe extending across the path of the web, and the sub-frame being pivotally mounted at one side of the web path and furnished at the opposite side with adjusting screw means, the sub-frame comprises two end members 1 connected by a cross piece 2 and arranged to seat on bars 5 bolted at 6 to the inner surfaces of two side frame members 7 of a printing or other machine, the end members being provided with bearings 8 to receive the ends of the shaft of, or trunnions on, the rotary component 9, and an adjustable carrier bar 12 for the fixed knife being secured to the cross piece. One end of one of the bars 5 is provided with a dowel pin 18 which constitutes the pivot of the sub-frame and engages in a hole in the underside of the end member 1 at that side while a bracket 19 for two screws 20, 21 is provided at the opposite end of the bar 5 at the other end of the sub-frame. By manipulating the screws 20, 21 the sub-frame can be adjusted and swivelled to one side or other of the pivot 18, the sub-frame being secured in position after adjustment by means of studs 22. The knife 13 is set obliquely to the longitudinal edges of the web and the cutting edge of the knife intersects the axis of the component 9 at a constant angle.
Patent GB-854196-A (GB)
Title: Improvements in or relating to electronically-controlled timepieces
IPC: H03H9/24
Filed: 1958-06-09
Abstract: 854,196. Electric timepieces. BULOVA WATCH CO. Inc. June 9, 1958 [June 13, 1957], No. 18418/58. Addition to 840,086. Class 139 The invention of the parent Specification is modified by the division of the driving coil into two series-connected sections 22, 27, Fig. 1, associated respectively with the tines 17, 18 of the tuning fork 10, the sensing coil 28 being located adjacent the coil section 27.
Patent GB-827786-A (GB)
Title: Cinematograph camera
IPC: G03B19/18
Filed: 1957-06-11
Abstract: 827,786. Kinematograph cameras. HANDLER, A., and VOCKENHUBER, K. June 11, 1957 [June 13, 1956], No. 18423/57. Drawings to Specification. Class 97(1) A variable focal length objective and the mechanism for operating it are at least partly recessed into the camera casing between the film spools with the optical axis perpendicular to the spool axes, the film gate and feed mechanism being at the side of the casing opposite to the lens, the focal length adjustment of which is coupled to a device for masking, appropriately to the focal length in use, the field of view of a viewfinder also contained in the casing.
Patent GB-577573-A (GB)
Title: Improvements in or relating to process for the manufacture of formaldehyde
IPC: C07C45/38
Filed: 1943-11-08
Abstract: Formaldehyde is prepared by passing a mixture of air and methanol, obtained by circulating a large volume of liquid methanol, preheated or not, downwards through a vaporizer in countercurrent to a stream of air, over an oxidation catalyst at reaction temperature and recovering the formaldehyde produced by cooling and absorbing in water the reaction vapours.  This solution is distilled and any unreacted methanol is separated and may be vaporised and returned to the vaporizer.  The top of the latter, which has a large internal surface area, is maintained at a constant equilibrium temperature.
Patent GB-530504-A (GB)
Title: Race starting device
IPC: A63K3/02
Filed: 1939-06-27
Abstract: 530,504. Race-starting apparatus. NANCARROW, G. June 27, 1939, No. 18623. [Class 132 (i)] A starting device for horse races comprises individual constraining means including rigid arms 25 having means at the end affording a detachable connection with the bridle 27 of the horse, means controlled by an attendant being provided to release the arm from the bridles and allow mechanism to cause the arms to fly outwards. The bits of the bridles have spherical ends which are received by sockets at the ends of arms 25 and are held therein by catches. Each catch is operated by a bell crank lever 39 and all are operated simultaneously by linkages actuated by a shaft 43' manually operated by a handle 45. The arms 25 are mounted on pivots 23 and are caused to fly outwards by springs 48 acting on cranks 47 on pivots 23. Each starting box can be closed while the arms 25 are being connected by a door 13 and a bar 22.
Patent GB-110251-A (GB)
Title: Improvements in and connected with Biscuit and like Baking Ovens.
Inventor: WRIGHT JOHN DUTTON
IPC: A21B3/07
Filed: 1916-12-30
Abstract: 110,251. Wright, J. D., and Martin, D. Dec. 30, 1916. Bakers' ovens.-In a " travelling " oven for biscuits, the moisture driven off from the dough in the first part of the baking chamber is carried away through a flue or opening 10 near the front, and the first part of the baking chamber is divided by a transverse wall or partition 20 from the main oven chamber, where baking in direct contact with the heating- gases is effected. Products of combustion from the furnaces 7 are admitted to the oven partly through damper-controlled ports 26 in the sole, and partly through dampered flues 14 and side ports 15 behind the partition wall. The wall 20 extends down to or beneath the level of the flame plate 16, and is curved from each side towards the centre of the oven as shown in Fig. 2. At the entrance to the moisture-escape flue 10 is a grid plate 21, above which a damper-plate 22 may be fitted.
Patent GB-531317-A (GB)
Title: Improvements in and relating to photographic films
IPC: G03C3/00
Filed: 1939-06-27
Abstract: 531,317. Photographic roll-films. TRIGGS, W. W. (Gevaert Photo-Production N.V.). June 27, 1939, No. 18726. [Class 98 (i)] To counteract the tendency of a roll-film to unwind from its spool, the protecting strip is subjected to a treatment which gives it a permanent set such that when drawn out it tends to assume a channel-like form by curling about its lengthwise axis, and at the same time to coil up tightly on itself. The treatment may comprise subjection to pressure, or a treatment by chemical agents which causes shrinkage or expansion of the material adjacent to one surface relatively to the remainder. The protective strip may be a separate unit attached to the film, or be formed by part of the film itself, and it may be formed of a cellulose ester or like composition.
Patent GB-1374962-A (GB)
Title: Driving or idler drum for article feeding belt
IPC: F16H55/36
Filed: 1973-04-18
Abstract: 1374962 Conveyer belt driving drums STOLLE CORP 18 April 1973 [21 April 1972] 18730/73 Addition to 1324290 Heading B8A The belt-driving plugs 15 of the Parent Application are detachably secured to the drive or return drum 12 by means of a nut 21. They may thus be replaced by plugs of a different diameter so that alternative belts having different sized apertures may be used. The recesses 19 are made large enough to accomodate the greatest diameter size of plug 15 likely to be used. The orientation of each plug 15 is maintained by the use of a pin 22.