baber/WOPTO huggingface dataset:
Patent GB-647581-A (GB)
Title: Improvements in the use of expansive cements
IPC: B28B23/04
Filed: 1945-07-18
Abstract: 647,581. Concrete pipes. LOSSIER, H. July 18, 1945, No. 18425. Convention date, March 6. 1943. "[Class 99(ii)] [Also in Groups X and XXI] A part of a concrete pipe is formed first and allowed to harden, and an expansive cement, mortar or concrete is then cast in contact therewith. Expansive cement is defined as a substance which expands during setting and at least a part of its hardening and comprises a mixture of : (1) a base of Portland cement; (2) a sulpho-aluminous cement-the expansive agent; and (3) a stabilizing element, e.g., a slag cement, for stopping the expansion after a limited period. As shown in Fig. 6, the pipe comprises expansive elements H cast between previously formed parts, and longitudinally spaced expansive rings (not shown), the expansion being resisted by external or embedded reinforcements. The invention may be applied to other concrete structures (see Group X and XXI). French Specification 823,425 is referred to. The Specification as open to inspection under Sect. 91 describes also a pipe formed wholly of expansive concrete, the expansion being resisted by bar reinforcements, external or internal metal or fibro-cement coverings, or metal banding or hooping stressed, e.g., by heating it or applying hydraulic jacks. Fig. 12, (Cancelled), shows an expansive concrete pipe joint between pre-formed members V, V<SP>1</SP> having reinforcements E, E<SP>1</SP> projecting into the joint which may also include metal sheets. This subject-matter does not appear in the Specification as accepted.
Patent GB-422123-A (GB)
Title: Improvements in or relating to form-grinding
IPC: B24B53/08
Filed: 1933-06-29
Abstract: 422,123. Grinding-machines. HARLEY, S. J., Long Bend, Old Leamington Road, Stivichall, Coventry. June 29, 1933, No. 18463. [Class 60] A machine tor producing, by grinding, continuous forms such as screw threads, and also for trueing a grinding-wheel to a required form, comprises a slide 2 carrying the wheel trueing tool 3, or a work-piece movable towards and from the grinding-wheel 4 by a linear cam 5 and a return spring 6, the cam contacting with a stylus 2a, on the slide. The cam is secured to a slide 7 movable on ball bearings on the slide 2, and reciprocated parallel to the axis of the wheel 4, by a cam drum 8 rotatably carried by a slide 13 in which the slide 2 is movable ; the drum 8 is rotated by hand or by power through gearing 14, 15, 18. The slide 13 is mounted on a slide 20, and is traversed thereon by a lead screw 16 or by a cam so as to carry the slide 2 across the wheel 4, as it is moved by the cam 5 towards and from the wheel. The slide 20 is mounted on a slide 21 adjustable on a base member 22 by rack and pinion gearing 24, and the slide 20 is adjustable on the slide 21 by a screw 25 to feed the tool 3 or the work towards or away from the wheel 4. The machine may operate in both directions of movement of the slide 13, or may be arranged so that the tool or the work piece is withdrawn, for example, by a solenoid, from the wheel 4 during the traverse of the slide 13 in one direction, and the traversing movements of the slide may be produced by electrical means, for example, a solenoid. The cam 5 may be adjustable longitudinally and also about a pivotal mounting.
Patent GB-1139524-A (GB)
Title: 5-substituted-2-oxazolidinones
IPC: C07D263/24
Filed: 1966-04-27
Abstract: 1,139,524. Oxazolidinones. A. H. ROBINS CO. Inc. 27 April, 1966 [29 April, 1965], No. 18518/66. Heading C2C. [Also in Division A5] Novel 5-(omega-substituted-ethyl or -propyl)- 2-oxazolidinones in which the omega substituent is a group of Formula I, II, III or IV, wherein Formula V is a bivalent, saturated 6- or 7- membered carbon-nitrogen heterocyclic group in which the two nitrogen atoms are separated by at least two carbon atoms and the total number of carbon atoms is 4 to 8, each of P and A is a phenyl or substituted phenyl group in which the substituent or substituents are selected from halo, C 1-8  alkyl, C 1-8  alkoxy, trifluoromethyl, C 1-8  alkylthio, di-(C 1-8  alkyl)- amino and nitro, and P can also represent a quinolyl or pyridyl group, s signifies that the heterocyclic rings are saturated, m and n are 0 or 1 but not 1 at both positions in the heterocyclic ring, and B is hydroxy, hydrogen, C 1-8  alkanoyloxy, carboxy or carbalkoxy, and their acid addition salts, are prepared by reacting a 5 - (omega - halo - substituted - ethyl or -propyl)-2-oxazolidinone with the secondary amine from which the omega substituent is derived, and, if desired, salifying the product. The compounds in which there is a benzyl group attached to the nitrogen atom of the oxazolidinone ring may be debenzylated in conventional manner. The compounds in which the omega substituent has the Formula I, in which Formula V represents a piperazine-di-yl radical, are also prepared by reacting a 5-(omega-halosubstituted-ethyl or -propyl)-2-oxazolidinone with diethanolamine to form a 5-(omega-diethanolamino-ethyl or -propyl)-2-oxazolidinone, reacting this with thionyl chloride or bromide to form a 5 - {omega - [di - (2 - haloethyl) - amino] - ethyl or -propyl}-2-oxazolidinone and reacting this with aniline or substituted anilines.
Patent GB-680718-A (GB)
Title: Improvements relating to rocket motors
IPC: F02K9/86
Filed: 1949-07-14
Abstract: 680,718. Generating combustion products under pressure. DE HAVILLAND ENGINE CO. Ltd., HALFORD, F. B., CLEAVER, A. J., and DOVE, E. B. July 14, 1950 [July 14, 1949], No. 18569/49. Class 51 (i) [Also in Group XXVI] A combustion chamber 10 for a rocket (see Group XXVI), has an annular pre-combustion chamber 13 lying in a plane transverse to its longitudinal axis and both combustion chambers are encased in a common cooling jacket 15. In the modification shown the forward end of the combustion chamber 10 has threaded sockets 44 to receive fuel injectors and is closed by a plug 40 having cooling passages 41 therein. The pre-combustion chamber is in two parts welded together in the plane 43 whilst the chamber 10 is welded in the plane 46 to a jet nozzle. Ignition in the precombustion chamber 13 may be effected by hypergols or by a spark plug if a non-hypergol is used therein.
Patent GB-249462-A (GB)
Title: Improvements in or relating to lighting fixtures
IPC: F21V21/03
Filed: 1925-07-23
Abstract: 249,462. Miller Co., (Assignees of Allworth, A. B.). March 18, 1925, [Convention date]. Ceiling roses.-In an electric ceiling lamp in which a flexible electric lead 38, particularly for providing a terminal connection for electric irons &c. passes through and is supported at a distance from, the canopy 10 so as to hang free of the globe-holder 11 and the globe 12, the lead supporting member is secured to the canopy independently of the means for attaching the canopy to the ceiling support. The member may consist of a wire loop 33, secured in the upper edge 31 of a sheet metal canopy, two laterally extending parallel portions of the loop terminating at the outer edge in a portion 35 carrying a bushing 36, through which, and a bushing 37 in the canopy, the lead 38 is passed. The canopy may be secured by screws 18 and nuts 22 to a rigid strap 15, provided with a central hole 24 for receiving a disused gas pipe 25 or the like and with slots 26 to receive screws for attaching it to the ceiling support.
Patent GB-764683-A (GB)
Title: Improvements in or relating to the production of braided hose
Inventor: WOODWARD JAMES HENRY
IPC: B29D23/00
Filed: 1953-07-08
Abstract: 764,683. Braiding. DUNLOP RUBBER CO., Ltd. July 5, 1954 [July 8, 1953], No. 18888/53. Class 74 (1). A hose lining tube A, about which a cover is to be braided,. is fed to the brading machine after mounting on a flexible, inextensible mandrel, such as a rubber or polyvinyl chloride rod C having a metallic helix a or rod b as a reinforcing core. The tube, on its mandrel, is wound on a let-off drum 25, or in a let-off pan, whence it is fed, via a curved guide C, to the brading head 1 and thence, via a pulley 11, about which it is wrapped two or three times, to a take-up drum 23. A shaft 7 is driven from an electric motor 4 by a V-belt 6. The shaft drives the braiding head 1 through one set of bevel gears and the pulley 11 through other bevel gears 19, worm and worm-wheel 16, 20, and spur gearing. The take-up arms 23 is driven from pulley shaft 10 by chain-andsprocket drive 22. The peripheral speed of the pulley 11 is adjusted to the speed of braiding by choice of gears between shafts 7 and 14. The continuous braided cover serves to connect successive lengths of tubing. Specification 722,542 is referred to.
Patent GB-922783-A (GB)
Title: Improvements in electro-magnetic indicators
Inventor: PONTING STANLEY ALBERT
IPC: G08B5/30
Filed: 1958-06-13
Abstract: 922,783. Visible signalling apparatus. DOWTY ELECTRICS Ltd. June 15, 1959 [June 13, 1958], No. 18910/58. Class 118. An electromagnetic indicator of the kind having a ferromagnetic portion secured to the indicator for attraction by a suitably positioned electromagnet, has the indicating element mounted in a compartment sealed off from the electromagnet. An indicator similar to that described in Specification 740,780 has a disc 26 soldered at points 27 to seal the indicating element off from the electromagnet 13. Specification 922,784 also is referred to.
Patent GB-734849-A (GB)
Title: Improvements in or relating to closure plugs and pipe connections for pressure fluid containers
IPC: F15B1/22
Filed: 1952-07-25
Abstract: 734,849. Closures for resisting fluid pressure. MERCIER, J. July 25, 1952 [Jan. 29, 1952], No. 18913/52. Class 123 (1). [Also in Groups XXV, XXVIII and XXIX] Means for securing a tubular connector 17 in an opening in a pressure vessel such as an hydraulic accumulator comprise a terminal shoulder 19 on the connector having a diameter less than that of the opening, a nut 43 screwed on the connector and engaging the exterior of the wall 11 of the vessel, and a washer 27 which is deformable for introduction through the opening and consists of a number of rigid arcuate segments connected by flexible material, being clamped between the shoulder 19 and the interior of the wall. A spigot 46 on the nut extends into the opening to compress a sealing ring 42 between spacers 45. The washer segments 27 may have a rounded bottom surface to fit the vessel wall and a flat top surface to which is bonded a continuous rubber ring 35. The ring 35 has dimensions such as to embrace the shoulder 19 and overlap the segments, covering the gaps therebetween. Alternatively to, or in addition to the ring 35 the segments may be connected by rubber strips lying in the gaps between the segments and bonded thereto.
Patent GB-146999-A (GB)
Title: An improved gas cooker
IPC: F24C3/02
Filed: 1920-07-06
Abstract: 146,999. Braach, P. Jan. 9, 1914, [Convention date]. Void [Published under Sect. 91 of the Act]. Gas cooking-stoves; heat distributors and deflectors.-Relates to a stove in which a funnelshaped deflector, constructed with overlapping segmental plates E, is arranged above a gas burner M, the upper ends of the segmental plates resting upon a frame B. Weighted members D act to bring the plates E against a cooking-vessel inserted in the opening F, the vessel resting on supports N. The outer casing contains a boiler I, the whole structure being covered with a hotplate K through which the cooking-vessel passes. The combustion gases are deflected by the bottom of the vessel toward the periphery of the frame B, which is cut away to allow the gases to pass between its edge and the inner wall of the boiler 1. The gases then pass above the frame B and finally escape between the opening in the hotplate and the upper portion of the cooking-vessel.
Patent GB-279930-A (GB)
Title: Improvements in reflectors
IPC: F21V7/04
Filed: 1926-07-29
Abstract: 279,930. Allom, G. July 29, 1926. Overhead lamps; wall lamps. - An unsymmetrical reflector, more particularly for interior lighting, has a shape corresponding to a symmetrical spherical or paraboloidal reflector having a segment removed from one-half and the other half curved and extended outwards so that the reflecting surfaces on the two sides of the axis are of unequal areas and the beams reflected by these two surfaces cross one another. The reflector may be moulded in one piece, or it may be made of flat strips or sections of reflecting material, such as mirrored glass, curved and joined together as described in Specification 234,905, [Class 75 (ii), Lamp chimneys and the reflecting material may be slightly waved or crinkled, and may also be coloured. One or more such reflectors may be arranged in a single bowl or fitting which may be mounted on a wall, or carried by a pendant or pedestal. In Fig. 3, j indicates the cut-away segment, which may extend downwardly as far as the axis i, and k indicates the curved and outwardly-extended portion. In Fig. 1 a single reflector a is arranged in a closely-fitting bowl n mounted on a wall h so that the axis of the reflector a is inclined at an acute angle to the celing, and the bowl n is horizontal or approximately horizontal so as to screen the light source g. In order to screen a high light from the wall above the fitting, the back of the reflector may be provided with a screen o which may be flat or in the form of a spherical rejecting segment in order to reflect rays of light back on to the reflector a, and when the fitting is arranged in a corner of a room the edges of the screen o may be parallel to the walls. If the front of the combined reflector and bowl is tilted downwards slightly the front of the reflector may be fitted with a screen to hide the source of light.
Patent GB-416166-A (GB)
Title: Improvements in or connected with die holders and dies for cutting screw threads
IPC: B23G5/10
Filed: 1933-07-04
Abstract: 416,166. Screwing-dies and die-heads; stocks and dies. TAYLOR, W. E., 9, Lancelot Avenue, Wembley, Middlesex. July 4, 1933, No. 18986. [Class 83 (iii).] A die holder or head for an integral screwing-die comprises a sleeve 1 provided with a tapered bore 2 for receiving a similarly shaped split button die 8. The position of the die within the head is adjusted and secured, for varying the cutting size, by means of a bush 5 and a flanged cap 6 screwing within and outside the head respectively, holes or recesses such as 5a being provided for rotating the bush and cap. The die may be provided with a boss 8<c> projecting through the central aperture of the cap and forming a continuation of the cutting threads so as to enable the die to cut up to a shoulder on the work. The head 1 may be provided with handles or with a screw thread 1<b> for attachment to a machine spindle, or alternatively may be formed integral with a machine spindle. Grub screws &c. may be used for locking the bush 5 and cap 6.
Patent GB-440356-A (GB)
Title: Improvements in apparatus for projecting lenticular films
IPC: G03B21/20
Filed: 1934-06-27
Abstract: 440,356. Optical-projection apparatus. GROVES, W. W., 30, Southampton Buildings, Chancery Lane, London.-(I. G. Farbenindustrie Akt.-Ges. ; Frankfort-on-Main, Germany) June 27, 1934, No. 18992. [A Specification was laid open to inspection under Sect. 91 of the Acts, Dec. 29, 1934.] [Classes 97 (i) and 98 (ii)] In the projection of lenticular films by means of a lamp comprising a positive carbon in the optical axis, the carbon holder is shaped so that the light rays which pass to it pass also either through a line transverse to the strips of the colour filter, or through one or more lines of junction of such strips, or would so pass if permitted by the holder. Fig. 2 shows a colour filter F in which these rays pass through the junction lines of the strips r, g, b ; the holder is between the light source and the filter, so that its shadow falls on the junction lines. Fig. 4 shows a construction in which the filter frame 12 is formed with a recess G extending across the colour strips to accommodate the holder H; the recess permits the holder to pass through the filter. Fig. 5 shows a construction in which the frame has an arm T at the junction of two strips, and a recess E for the holder H at the junction of the other two strips ; arms C D extend from the arm T to form the border of an aperture in the filter. The holder carries the carbon N on the middle longitudinal line of the middle strip. The lamp may be a mirror arc or condenser arc.
Patent GB-703073-A (GB)
Title: Microscope for the examination of living tissues in body cavities
IPC: G02B21/00
Filed: 1950-07-31
Abstract: 703,073. Microscopes. ZEISS-OPTON OPTISCHE WERKE OBERKOCHEN GES. July 31, 1950 [Aug. 5, 1949], No. 19014/50. Class 97(1) [Also in Group VI] A microscope for the examination of living tissue in body cavities is characterized in that the path of observation rays is lengthened by a reversing system, the microscope having incorporated therewith a searcher microscope of low magnification and with a large field of view. As shown in Fig. 1 the main body of an endoscope comprises a tube 1 with an illuminating attachment 2, the forward end of the tube being of smaller crosssection and closed by a glass plate 8 Within the tube 1 is a microscope formed by a system of lenses partly carried in a tube 9 which is longitudinally adjustable relative to the tube 1 the lens system being such that the rays follow a parallel path betweer lens 5 carried in tube 9 and lens 6 carried in tube 1. A second microscope of low magnification is formed by lenses 13, 13<SP>1</SP> used in conjunction with a swingable mirror 18. The endoscope is mounted on a stand 40 in such a manner that it is adjustable in any direction. In a modification, the path of the illuminating rays is separate from that of the observation rays.
Patent GB-975272-A (GB)
Title: Improvements in or relating to transistor amplifiers with automatic gain control
IPC: H03G3/30
Filed: 1961-05-26
Abstract: 975,272. Transistor amplifying circuits. E. K. COLE Ltd., and M. V. CALLENDAR. May 24, 1962 [May 26, 1961], No. 19042/61. Heading H3T. In a radio-frequency or intermediate frequency amplifier comprising two cascaded common-emitter stages coupled through a circuit Lo Co tuned to the radio or intermediate frequency, and a series capacitor C s , changes in the tuning and bandwidth of the coupling circuit due to changes in an A.G.C. voltage applied to the second transistor are reduced by connecting a resistor R s  of low value in shunt with the emitter-base circuit of the second transistor. The shunt resistor preferably has a value approximately equal to twice the equivalent series input resistance of the second transistor.
Patent GB-199959-A (GB)
Title: Improvements relating to the wheel steering mechanism of automobiles and other road vehicles
IPC: B62D1/10
Filed: 1922-07-12
Abstract: 199,959. Joyce, H., and Tubes, Ltd. July 12, 1922. Securing steering-wheels on shafts.-In steering-mechanism for motor and other road vehicles the steering-wheel is secured on a tubular pillar by drawing or swaging the extremity of the tube to fit a coned bore of the wheel boss, and holding the wheel in place by a nut engaging internal or external threads on the tube. As shown in Fig. 2, the pillar a is swaged to a taper a' and a reduced parallel part a<4>, which is externally threaded to receive a nut b. The tapered portion a<1> is lightly machined to fit the bore of the wheel c and is made rigid therewith by a separate key d or a pressed-up key as shown at a<3>, Fig. 3. The nut may have an aperture to accommodate engine control rods or tubes, which may take a bearing in the nut. In a modification, Fig. 3, the taper a' extends to the end of the tube, an internal nut b being fitted. In order to avoid constricting the bore of the tube a where three or more control elements pass therethrough, a cylindrical enlargement may be formed by swaging &c., as shown at a<4>, before the taper a<1> is produced.
Patent GB-824122-A (GB)
Title: Improvements in or relating to the refining of steel
Inventor: COUPETTE WERNER
IPC: C21C7/10
Filed: 1956-06-20
Abstract: 824,122. Induction heating. BOCHUMER VEREIN FUR GUSSSTAHLFABRIKATION A. G. June 20, 1956, No. 19102/56. Class 39(3) [Also in Group II] Apparatus for refining molten steel as it flows into a vacuum chamber comprises an induction coil, disposed in the vacuum chamber and surrounding the stream of steel, arranged so that the stream of steel has its temperature raised and its velocity retarded as it falls through the coil. As shown, the coil may comprise three parts, parts 1 and 2 formed as truncated cones, gases escaping from the space between the parts, and the third part may be arranged in two parts 3a and 3b with the current flowing in opposite directions in the two parts. The coils may be water cooled or formed with fins which may be interleaved, without contact, with fins on a solid element surrounding the coil, Fig. 2 (not shown).
Patent GB-516482-A (GB)
Title: Improvements in or relating to means for protecting electrical apparatus against surges and excessive voltages
IPC: H01R13/66
Filed: 1938-06-28
Abstract: 516,482. Two-part couplings combined with protective devices. GENERAL ELECTRIC CO., Ltd., and BARSDORF, L. W. June 28, 1938, No. 19124. [Class 38 (i)] In order to protect an electrical apparatus against surges or excessive voltages it is connected to the supply through a coupling in which is incorporated a spark gap or like protective means. The live pins 1 of a three pin plug coupling are mounted on a base 2 by means of a screw shank passing through an insulating bushing 4, metal washers 5, 7, a perforated sheet of insulation 6, a block of carborundum 8 and a strip 9 connected to the earthing pin. The perforated sheet constitutes the spark gap by which surges are by-passed to earth through the carborundum resistance.
Patent GB-1502945-A (GB)
Title: Forming apparatus
IPC: B30B1/28
Filed: 1974-05-01
Abstract: 1502945 Metal working presses MATRIX ENG Ltd 29 April 1975 [1 May 1974] 19168/74 Heading B3H A forming press has a movable member such as a crosshead 4 carrying an upper tool 3, guided by pillars 5 in bearings 7 and driven by a crank or eccentric drive 11 whose shaft 14 is mounted in hydrostatic bearings 15. The connecting rods 12 are also mounted by hydrostatic bearings 16, 17 to a shaft 8 on a crosshead 6 and to the crankshaft respectively. The pillars 5 are guided by linear hydrostatic bearings 7. In an alternative embodiment the upper crosshead (24), Fig. 2 (not shown) is guided by pillars (25) in hydrostatic bearings (271) and driven by a crank (31) above the crosshead. The hydraulic supply to the bearings is from a pump 41, Fig. 3, through manifolds 43, 44 and restrictors 48.