baber/WOPTO huggingface dataset:
Patent GB-1451737-A (GB)
Title: Thermosetting moulding composition
IPC: C08L67/06
Filed: 1974-02-22
Abstract: 1451737 Thermosetting moulding composition BP CHEMICALS INTERNATIONAL Ltd 6 Feb 1975 [22 Feb 1974] 8223/74 Heading C3P A thermosetting moulding composition contains a shrink control agent having a viscosity at 25‹ C. greater than 500 poises, and consisting of the reaction product of a saturated liquid polyester with a viscosity at 25‹ C. of below 500 poises, and a diisocyanate or diepoxide; sufficient thermoplastic polymer is present to prevent the deleterious exudation of the shrink control agent during the thermosetting of the moulding composition. In the examples, the shrink control agent was prepared by reacting the liquid polyester polypropylene adipate with hexamethylene diisocyanate, or a bisphenol diglycidyl ether. Other diisocyanates that may be used are naphthalene-1,5-diisocyanate, tolylene diisocyanate, 4,4<SP>1</SP>-diphenylmethane diisocyanate, 1,4-phenylene diisocyanate and 4,4<SP>1</SP>- diphenyldiisocyanate.
Patent GB-1177356-A (GB)
Title: Sonic Displacement Transducer
IPC: G01B17/04
Filed: 1967-02-21
Abstract: 1,177,356. Measuring displacement by sound waves. KOLLSMAN INSTRUMENT CORP. 21 Feb., 1967 [20 July, 1966], No. 8226/67. Heading H4D. Displacement of one part 12 relative to another part 11 is given by measuring the change in the velocity of sound waves in a curved wire 10 connecting the parts. The parts 11, 12 are sound wave reflecting and in the embodiments the change in sound velocity is measured by measuring the change in torsional resonant frequency. A magnet 31 and current from variable frequency source 39 set up torsional vibrations in the wire which are maintained at resonance by a connection from the ferromagnetic wire 10 beyond a further magnet 44. The wire may be S-shaped, Fig. 2 (not shown). The invention is applied to an aneroid barometer capsule, a typical curve showing resonance frequency variation versus altitude being given, Figs. 5, 6, 7 (none shown).
Patent GB-1117961-A (GB)
Title: O-alkyl-s-alkyl phosphoroamidothioate insecticides
Inventor: MAGEE PHILIP STEWART
IPC: C07F9/24
Filed: 1966-02-24
Abstract: Compounds of the general formula <FORM:1117961/C2/1> wherein R and R1, which may be the same or different, are each a C1 to C6 alkyl group, and R11 is a hydrogen atom or a C1 to C4 alkyl group may be obtained by reacting an O,O-dialkyl chlorophosphorothioate with ammonia or a primary alkyl amine, and then heating the reaction product in the presence of a suitable alkylating agent, e.g. alkyl halides and dialkyl sulphates.
Patent GB-458503-A (GB)
Title: Improvements in eye photographing devices
IPC: A61B3/113
Filed: 1935-03-18
Abstract: 458,503. Photographic cameras. TAYLOR, J. Y., and TAYLOR, C. C., 1410, Avenue B, Brownwood, Texas, U.S.A. March 18, 1935, No. 8415. [Class 98 (i)] Apparatus for photographic recording of the movement of a person's eyes comprises a source of illumination for producing a reflection from the person's eyes into a lens system inclined to the direction of vision for recording on a continuously moving film. The apparatus shown is secured on a rod 20 by lugs 17 and bolts 19, a leg 21 supporting the rod .20 and a counterbalancing spring 21<1> in a stand 23. The camera housing is divided into two compartments 28, 29, and the film 32 passes from the supply reel 30 through a guide channel 33 and over a driving sprocket 35 into a box 36 containing the take-up reel 37. An extension 40 supports the lens 42 slidable in sleeves 44 which are universally adjustable on eccentric mouiatings 47. The head clamp 50 for the patient comprises standard 51 supporting at the top, forehead rests 54.with screw adjustment and bars 60 carrying the clamping discs 63 ; at the bottom is supported an adjustable bracket 57 bearing a chin rest 59. Electric lamps are mounted in casings 66 which have small openings 67 at the front to cast light into the eyes, and openings 68 at the rear to illuminate the reading card 72 in the holder 70. A hinged flap 73 can cover the card 72 which is read whilst the eye movements are photographed. The view-finder is provided in the housing 25 and comprises a hinged mirror 75 with a vertical rocker arm 77, and a ground glass screen 78<1>. A sliding panel 79 covers the screen 78<1> and simultaneously strikes the rocker arm 77 to swing the mirror 75 upwardly. The film is driven by an electric motor which is connected through clutches to the drive shafts of sprocket 35 and winding reel 37 whereby the film is also kept taut. Holes may be punched in the film to identify each serial record. In operation, the head is clamped in a position so that the rays of light strike the cornea of the eye at a considerable angle and are reflected into the cornea, the line of sight of the eyes lying between the light rays from the light directing means and the rays proceeding from the eyes onto the film. Even with persons wearing bifocal lenses, the eye movements are readily recorded on the continuously moving film without fogging thereof. The interpretation of the photographic records is described.
Patent GB-840113-A (GB)
Title: Improvements relating to thermal starter switches for low pressure electric discharge lamps
Inventor: WESTON ROBERT FREDERICK
IPC: H05B41/06
Filed: 1956-03-19
Abstract: 840,113. Thermal switches. BRITISH THOMSON-HOUSTON CO. Ltd. March 19, 1957 [March 19, 1956], No. 8496/56. Class 38 (5). In a lamp-starter switch, material sputtered from the contacts is prevented from collecting on the glass pinch by a mica shield supported by the lead-in conductors. The latter are forced through smaller apertures in the shield, which is thereby distorted so as to assist in inhibiting deposition on the shield itself. If a conducting path is deposited on the shield between the conductors, it is stated that this is of a low resistance so that the current through it will burn the path away again.
Patent GB-580267-A (GB)
Title: Improvements in fastening devices
IPC: F16B37/04
Filed: 1944-05-05
Abstract: 580,267. Bolting. ELASTIC STOP NUT CORPORATION OF AMERICA. May 5, 1944, No. 8580. Convention date, May 6, 1943. [Classes 44 and 89 (i)] A device for use in bolting together surfaces that may be sprung slightly apart or be otherwise separated from normal position comprises a housing 18 secured to one of the parts 14 to be connected as by rivets 16. A central aperture has its periphery recessed leaving projections 24 and each projection is centrally notched to receive spring stops 40 formed by bending up the parts, shown in dotted lines in Fig. 6, from the ends of arms 38 extending from an annulus 34. Other projections 44 are sprung into recesses 32 formed in the housing. Rigid stops 28 are formed on one side of each projection 24. A screw 48 in the part 52 to be attached receives a nut that is provided with projections 60 and on assembly the projections are passed through the recesses in the housing and on turning the screw ride up the bevelled edges of the spring stops 40 and then pass over the projections 24 till arrested by the stops 28. A fibre lock washer in the nut ensures sufficient friction to enable the stops 40 to be cammed down. When unscrewing the projections on the nut are first brought into contact with the straight sides of the stops 40 which arrest the nut until it, has backed off sufficiently to clear the stops ; this ensures sufficient slackening of the nut to provide for reassembly even if the parts are warped. A number of the fasteners may be formed on a strip with narrow sections between them to permit of bending to suit variously curved work.
Patent GB-436710-A (GB)
Title: Improvements in and relating to speedometers
IPC: G01P1/10
Filed: 1935-03-20
Abstract: 436,710. Speedometers. BURGE,W.S., Rogerthorpe, Pembroke Road, and SALTER, H. C., Maretino, South Approach, both in Moor Park, Hertfordshire. March 20, 1935, Nos. 8716 and 14364. [Class 106 (iii)] A dial 3 for use with a speedometer has an illuminated arc - shaped slot 4 adapted to be traversed by a wing 10 driven by the speedresponsive device, so that the length of the slot uncovered by the wing represents the speed. Part 7 of the slot on one side of the arrow slot 5 may be glazed in red to indicate whether a speed limit has been exceeded, and an additional warning may be given by the closing of a bell circuit by a contact on the moving wing 10. The speedometer may be located wholly or partly outside the dial casing. The device may be mounted on the dashboard, or on the rear or front of the vehicle so as to be visible to persons on the road.
Patent GB-594724-A (GB)
Title: Improvements in electrolysis cell installations
IPC: C25C3/20
Filed: 1945-04-09
Abstract: 594,724. Automatic control systems. COMPAGNIE DE PRODUITS CHIMIQUES ET ELECTROMETALLURGIQUES ALAIS, FROGES, ET CAMARGUE. April 9, 1945, No. 8763. Convention date, April 7, 1944. [Class 38 (iv)] [Also in Group XXXVI] In order to facilitate the adjustment of the electrodes of an electrolytic cell so that the total current is equally divided between them, the relationship between the current traversing each electrode to the total current is measured. As shown in Fig. 1, a ratiometer having crossed coils 1, 2 is provided for each electrode 10. Each coil 1 is supplied with a voltage proportional to the current traversing the corresponding electrode 10 either by connection across a shunt' 3 or by means of a shunt multiplier or direct current transformer. Each of the other coils 2 is subjected to a voltage proportional to the total current, for example by means of a shunt multiplier 4 supplying a number of resistances 5, across each of which one of the coils 2 is connected. Each instrument indicates the ratio between the current in the corresponding electrode and the total current and may actuate contacts 6, 7 controlling signalling or automatic auxiliary supply circuits. A differential instrument may be employed instead of a ratiometer. Fig. 3 shows a modification in which the connection 14 to the electrode is surrounded by a magnetic circuit 13 carrying a winding 15 which produces a magnetomotive force opposing that generated by the bar 14. The winding 15 is supplied with a current proportional to the total current through a shunt multiplier 4, the current being adjusted so that the magnetomotive force in the core 13 is zero when the relation between the current in the bar 14 and the total current is correct. A magnetized cylinder 16 is rotated in a direction dependent on whether the current in the bar 14 is above or below this value and closes one of two contacts 6, 7, opposing springs 18, 19 biassing the movable contact to its central position. The cylinder 16 may be replaced by a movable coil connected across a resistance in series with the winding 15. In another modification, Fig. 4, the lead to each electrode 10 is surrounded by a closed magnetic core 21 having a winding 22 supplied with alternating current, the reactance of the cores 21 being varied in accordance with the D.C. supplied to the corresponding electrode 10. One coil 25 of the corresponding differential relay 23 is supplied with the voltage across the winding 22 rectified by a rectifier 29, the other coils 26 being supplied with the total voltage through a rectifier 24.
Patent GB-287903-A (GB)
IPC: H04L27/04
Filed: 1928-03-24
Abstract: 287,903. Telefunken Ges. f³r Drahtlose Telegraphie. March 29, 1927, [Convention date]. Thermionic modulating systems; thermionic generators. - In a thermionic valve circuit in which variations in the load on the high-tension supply N, N<1> are compensated by a thermionic valve L, the conductivity of the compensating valve is varied in accordance with the intensity of the high-frequency oscillations in the main circuit R. Grid-bias proportional to the intensity of the oscillations is applied to the compensating valve by applying the oscillations to a rectifier V and applying the resulting direct-current potential to the grid across a condenser K and leak W.
Patent GB-590813-A (GB)
Title: Improvements in or relating to panic bolts and the like
IPC: E05B65/10
Filed: 1945-04-11
Abstract: 590,813. Panic bolts. KEARNEY, A. R. April 11, 1945, No. 8967. [Class 44] In panic bolts of the kind comprising a pair of sliding bolts operated by an angularlymovable element mounted in a casing and interconnecting the inner ends of the bolts, a latching device is pivotally mounted on one of the inner bolt ends and is adapted to lock the bolts in shot position, and means are provided to release the latch to permit retraction of the bolts. The inner ends 4, 5, Fig. 3, of the bolts 6, 7 are mounted to slide in the casing 1, and have slots in which engage pins 16, 17 on a pivoted member 18 secured to a handle-spindle 20. Emergency release of the bolts is effected as usual by a pressure bar which operates a lever 37, Fig. 5, one end 36 of which is engaged in a clearance hole in the inner end piece 5 of the lower bolt. The latch-pawl 25 which normally holds the bolts in shot position, Fig. 3, is pivoted to the inner end member 5 of the lower bolt, biassed by a spring 27, and has a shoulder 30 which abuts against a cam surface 32 on a fixed pin 33. The upper end of the pawl 25 is formed with a heel portion 35 against which abuts the end 36 of the lever 37, initial movement of which thus releases the pawl, while further movement lifts the lower bolt and retracts the upper bolt. Latch means 50, Fig. 5, are provided to retain the lever 37 in lowered position when necessary. To enable the door to be unlocked from outside, the port 33, Fig. 4, may be a hollow sleeve-like member having mounted therein for angular movement, e.g., by a key, a spindle 52 with a projection 54 adapted to engage the latch-pawl 25 to unlatch it, when the bolts may be withdrawn by rotation of the handle-spindle 20, Fig. 3. Screw means for adjusting the length of the bolts may be provided.
Patent GB-878711-A (GB)
Title: Improvements relating to spectroscopes
IPC: G01J3/14
Filed: 1960-03-15
Abstract: 878,711. Spectroscopes. FISHER SCIENTIFIC CO. March 15, 1960 [March 19, 1959], No. 9071/60. Class 97(1) A spectroscope for analyzing light sources comprises a collimating lens, a slit and a second lens positioned between the slit and collimating lens.- In the part of the spectroscope shown a weak light source 2 of non uniform intensity is placed near a slit 1. The "second" lens 9 is placed so that it forms an image of the slit in the focal plane 10 of the collimator 3. The light source is located less than a distance S from the slit where f is the focal length of the collimating lens 3 fratio is the focal length of the collimating lens 3 divided by the effective diameter of the collimating lens. X is the angle, measured in mils, subtended at the centre of the collimator 3 by a first circle of least confusion (derived from a first point on the source) which the receiving medium will resolve from and a similar second circle of least confusion derived from a second point on the source having a different intensity from the first point. X is preferably less than 80 mils.
Patent GB-453605-A (GB)
Title: Automatic indicator systems for targets
IPC: F41J5/04
Filed: 1935-03-23
Abstract: 453,605. Targets. SUMNER, O., Hill View, Lyminge, Kent. March 23, 1935, No. 9106. [Class 20 (i)] Relates to indicating targets of the kind in which the target face is constituted by two sets of spaced elements arranged in an electric circuit adapted to be closed, and thus to illuminate the score, when a bullet strikes the target and bridges the space between two adjacent elements. According to the invention, means are provided whereby the closing of the circuit operates a device for moving one set of elements to eject the bullet and for subsequently returning the elements to their original position. In the construction shown, the target is mounted upon the hinged front 2 of a box 1 which carries a switch 1a, variable resistance 3, transformer 4, motor 5, a relay 6 with a mercury trip switch 7, and a target-face lamp 8 mounted within a combined reflector and projectile receptacle 8a. The target comprises two sets of elements A, B forming concentric rings, the rings of the set A being electrically insulated from one another while the B rings form a common return. The A rings are stationary and are carried by spiders connected to the front frame 2. The B rings are connected by spiders to a front plate 22. This plate is connected by spring- urged rods 13 to a frame 14 behind which is arranged a cam 18 on a shaft 17 which is driven by the motor 5. The circuit diagram is shown in Fig. 5. In operation, the bullet closes the circuit, thus energizing the associated lamp and also the electromagnet 6 which trips the switch 7. The closing of this switch drives the motor 5 to actuate the cam 18 and a slip ring contact 21, or like device, on the shaft 17 operates to close the circuit, independently of the bullet, until the shaft has made one complete revolution. During this movement of the shaft, the cam 18 urges the B rings forwardly to eject the bullet and subsequently releases them to be returned to their original position by springs 15. In a modification, the target face consists of a stationary front plate having holes through which pass projections on a movable rear plate.
Patent GB-508122-A (GB)
Title: Improvements in or relating to apparatus for gauging photographic exposures
IPC: G01J1/12
Filed: 1938-03-25
Abstract: 508,122. Photographic exposure meters. HALL, J. A., SCHOFIELD, F. H., and TURL, W. G. H. March 25, 1938, No. 9108. [Class 98 (i)] An image of a field to be photographed, a, Fig. 4, is formed by a lens b on a transparent glass screen f, and is viewed by an eyepiece c. Light from a variable source d is received on a small mirror e in the plane of screen f and the brightness of the mirror as viewed through the eyepiece c is adjusted to equality with the adjacent image of a selected object in the field. In a modification, Fig. 2 (not shown), the screen f may be a mirror viewed by reflection, and the spot e may be transparent. In Fig. 3 (not shown), the screen f may be the side of a prism arranged for total reflection. The brightness of the image of the object a may be adjusted by inserting an optical wedge or iris diaphragm in the line a-e, or such a device may be inserted between e and d. Alternatively, the brightness of an electric lamp illuminating d may be varied by varying the current supply. In Fig. 4, an absorption screen g and wedge h may be used. The light i may be moved to vary the brightness of d and may be compared with a standard source placed at a to determine the brightness of i for a specified position. The screen g is provided to increase the range of the instrument. In Fig. 6, the lamp i is, arranged with its filament at a definite point on the axis of a tube which is a sliding fit in a tube k, Fig. 5, containing a screen d. The optical system of Fig. 4 is arranged in a crosstube m. The distance between i and d may be indicated by scale and pointer on the tubes j, k. A slot q in the tube may be engaged by a pin on the tube k so that any desired scale s connecting brightness with distance may be obtained. Such a scale may be marked in exposure times. The tube j may be provided with a scale ring r adjustable in any position, indicating stop numbers and speeds, and guiding lines m are marked on the tube j to connect the exposure time scale s with the stop scale r.
Patent GB-662564-A (GB)
Title: Improvements in double action relays
IPC: H01H51/12
Filed: 1949-04-04
Abstract: 662,564. Electromagnetic switches. ROULSTON, A. E. April 4, 1949. [April 14, 1948] No. 9132/49. Class 38 (v). Impulses applied to a line 12 cause the alternate energization of magnets 10, 11 and corresponding movement of a contact operating member 14, 15, the necessary circuit connections being made by two levers 16, 17, operated by the magnets and each controlling sets of spring contacts, the lever 16 being restored to a central position by the contact springs when an impulse has ceased, but the lever 17 being held in one of two extreme positions by springs. The levers 16, 17 are U-shaped, pivot about an axis 23, Fig. 3, and carry rollers 20, 21 respectively for operating the contact springs. The lever 17 also carries a member 22, 24, 25 acted upon by deadcentre springs 26 so as to be held in an extreme position. Forks 18, 19 on the respective levers 16, 17 are engaged by a pin 15 on a plunger 14 common to the two magnets 10, 11, the engagement between 15 and 19 providing lost motion. With the parts in the position shown in Fig. 1, connection of the line 12 to the current source completes a circuit to magnet 10 through contacts 29, 30, 40, 39. Plunger 14 moves down actuating successively forks 18, 19. Movement of fork 18 completes a holding circuit for magnet 10 through contacts 34, 36, the previous circuit to the magnet being broken at contacts 39, 40, and also closes a work circuit 37, 38. A circuit is also prepared for the magnet 11 at 43, 44 but that circuit is now open at 34, 25. On de-energization of the line 12, the lever 16 and its contact springs return to their original central position but the lever 17 stays put. On receipt of the next current impulse the magnet 11 is energized through contacts 34, 35, 43, 44, the plunger 14 is moved up into its other position causing the successive upward movement of the forks 18, 19 and corresponding operation of contacts which prepare a circuit for the magnet 10 and close a holding circuit for the magnet 11 so long as the impulse lasts. On cessation of the impulse, the parts resume their original position and the cycle can restart.
Patent GB-516340-A (GB)
Title: An improved protein material and process of making same
IPC: A23J1/14
Filed: 1938-03-25
Abstract: 516,340. Drying protein. SOYSEIN PROCESS CORPORATION. March 25, 1938, No. 9232. Convention date, April 6, 1937. [Class 34 (ii)] [Also in Groups IV and III] The Specification as open to inspection under Sect. 91, states that protein is dried in a drum k, Fig. 3 (Cancelled) which is maintained at -4‹C. by refrigerant in a vessel p, and air at 2‹C. is circulated through the drum k, a freezing chamber n, and a heater o. Alternatively the moist protein is stirred in a vessel e, Fig. 4 (Cancelled), maintained at 10‹C. and removable refrigerator units w, are arranged in the upper part of the chamber with a corrugated lower surface on which ice forms and is detached after removal of the unit by warming the inside. This subject-matter does not appear in the Specification as accepted.
Patent GB-450490-A (GB)
Title: Improvements in or relating to discharge cocks especially for water pipes and the like
IPC: F16K31/524
Filed: 1935-03-25
Abstract: 450,490. Discharge cocks. MARKUS, D., 30, Raday-Utca, Budapest. March 25, 1935, No. 9286. [Class 135] A discharge cock comprises a conical valve member c opening under the fluid pressure, the amount of opening of the valve being regulated, and the closure being positively effected, by a spiral cam d rotatably mounted within the valve casing and bearing on the top of the valve member c. The cam d is carried by a spindle e which passes through a stuffing-box k and is actuated by an external lever g. A projection d<1> on the cam engages a stop l on the valve casing to limit the movement.