baber/WOPTO huggingface dataset:
Patent GB-603498-A (GB)
Title: Improvements in or relating to the chloroethylation of alkylated benzene compounds
IPC: C07C17/32
Filed: 1945-10-22
Abstract: Alpha - chlorethyl - polymethyl benzenes are made by reacting di-(alpha-chlorethyl) ether with a polymethyl benzene having at least one nuclear hydrogen atom in presence of zinc chloride at -15 DEG  C. to +15 DEG  C., whilst limiting the water content of the mixture throughout the reaction to a value not exceeding 50 per cent by weight based on the weight of zinc chloride.  The reaction is assisted by the presence of hydrogen chloride.  The di-(alphachlorethyl) ether may be prepared in situ by reaction of hydrogen chloride with acetaldehyde or substances decomposable under the reaction conditions to give acetaldehyde, e.g. paraldehyde.  In examples: (1) pure m-xylene, a commercial mixture of xylenes and a mixture of isomeric trimethylbenzenes containing mesitylene and pseudocumene are each reacted with anhydrous zinc chloride and paraldehyde, while passing in dry hydrogen chloride; (2) xylene is mixed with paraldehyde, the mixture is saturated with hydrogen chloride and the aqueous layer separated; the xylene solution of di-(alphachlorethyl) ether was then treated with zinc chloride.  The products may be dehydrochlorinated to give styrene compounds. Specification 603,497 is referred to.
Patent GB-662917-A (GB)
Title: An improved resonant relay
IPC: H03H9/48
Filed: 1949-10-28
Abstract: 662,917. Electromagnetic switches. LANDIS & GYR SOC. ANON. Oct. 28, 1949. [Nov. 11, 1948] No. 27725/49. Class 38 (v). [Also in Group XL (b)] A switch is operated by a unit including two U-shaped leaf springs 1 and 2 which are tuned to different frequencies of vibration and are secured to a supporting plate (not shown) through holes 3 and 4. Members 5, 6 and 7 project from the supporting plate and carry an electromagnet 8, shown largely broken away. One limb of each spring vibrates in an air gap of this magnet, either 13 or 14. A permanent flux is also maintained in the magnetic circuit by magnets 25 and 26. When electric oscillations of the frequency of either vibrating spring occur in a circuit connected to magnet 8 resonance is set up and the oscillations of the limb not in the magnet gap become sufficient to operate a ratchet and pawl mechanism. As shown in Fig. 2 the mechanism 19 associated with one spring drives a shaft 15 in one direction and the mechanism 18 associated with the other spring drives shaft 15 in reverse. Thus electric contacts 23 may be opened or closed by a cam 20 on shaft 15 according as to which resonant frequency is transmitted by a signalling system to electromagnet 8.
Patent GB-832723-A (GB)
Title: Improvements relating to insulating bushing assemblies
Inventor: EWER PHILIP ASHLEY
IPC: H01B17/28
Filed: 1957-09-03
Abstract: 832,723. Insulating bushings. BRITISH THOMSON-HOUSTON CO. Ltd. Aug. 28, 1958 [Sept. 3, 1957], No. 27792/57. Class 36. An insulating bushing includes a composite part 1 constituted by at least two juxtaposed insulating sections 1a, 1b, secured together at x by a spring-applied axial clamping action. As shown, the clamping action is supplied by springs 11 interposed between the end plate 10 secured to the conductor 6 and upper part of the insulating section 1a. The butting surfaces at the joint x are preferably coned as shown in Fig. 2 with a sealing gasket 13 between them, the cone angle being chosen so that the gasket coincides with an equipotential surface.
Patent GB-466400-A (GB)
Title: Control device for reversing gearing
IPC: F16H63/30
Filed: 1936-10-13
Abstract: 466,400. Reversing - gearing - VOITH, W., VOITH, H., and VOITH, H., (trading as VOITH, J. M., [Firm of]). Oct. 13, 1936, No. 27817. Convention date, Nov. 23, 1935. [Class 80 (ii)] A dog clutch member A for a reversing gear is actuated by a fluid pressure motor F<1>, F<2> through a lever C pivoted at C<1> and is adapted to be locked in each of its end positions by a retaining device comprising a second lever D mounted on a fixed pivot dl, and having latches d<2>, d<3> which engage with lugs c<2>, c3 respectively on the lever C. A spring connection e<1> is provided between the levers C and D which has to be compressed to release the lug d<2> or d<3> whichever is in engagement. This operation is effected by a second fluid-pressure motor G<1>, G<2> which is supplied with pressure fluid from lines h<1>, h<2>. The pistons G<1>, G2 after a certain part of their stroke to unlock the lever C open ports h<4>, h<5> to supply pressure fluid to the pistons Fl, F2 to effect the change-over of the clutch member A, which is then locked in its new position.
Patent GB-630000-A (GB)
Title: Thermal power plant
IPC: F01K23/08
Filed: 1947-10-17
Abstract: 630,000. Gas turbine plant. MASCHINENFABRIK OERLIKON. Oct. 17, 1947, No. 27879. Convention date, Nov. 11, 1946. Drawings to Specification. [Class 110(iii)] In plant in which the furnace gases of a steam-generator, water heater or other furnace are used to heat the working medium of a gas turbine, an additional combustion chamber for heating this medium is provided for use when the furnace is working at partial load or when the gas turbine is carrying an overload. The additional combustion chamber may be used for the regulation of the gas turbine. The combustion chamber may be in series with a heating coil in the furnace flue. The gas turbine exhaust may be used to preheat the compressed air or the feed water, to heat the combustion air for the furnace and as that combustion air. Part, also, may be supplied to an external user.
Patent GB-1268362-A (GB)
Title: Improvements in or relating to locking means
Inventor: JONES MICHAEL HAROLD
IPC: E05B47/00
Filed: 1968-10-11
Abstract: 1,268,362. Magnetic fastening device. M. H. JONES. 9 Oct., 1969 [11 Oct., 1968; 3 June, 1969], Nos. 48279/68 and 28012/69. Heading E2A. [Also in Division G4] A locking device comprising a bolt housing 1, a keeper 2 and a magnetised bolt 3 which is slidable in the housing and can be moved by an external magnet between a release position shown in Fig. 1 and a fastening position in which the magnetised bolt 3 engages the housing 1 and the keeper 2, magnetic retention means, cooperating with the magnetised bolt, being provided to retain the bolt in the projecting locking position and in the released position against unwanted movement. In the embodiment shown in Fig. 1 the cylindrical housing 1 and keeper 2 are of low friction synthetic plastics material such as nylon embedded in the door 7 and the frame 9 respectively and fixed therein by screws through embedded flanged plates 10, 11 respectively and thus the whole assembly is concealed when the door is closed. The inner end of the housing 1 is closed by a plate 16 having a ferromagnetic stud 18 as a magnetic retention means to hold the magnetised bolt 3 in the release position and having a skirt 17 of a height such that there is an air gap between the bolt 3 and the stud 18. A similar stud 26 is provided in the keeper 2 to hold the bolt in the fastened position. The magnetised bolt may be sheathed in nylon which has a projecting annular shoulder 19 which engages the shoulder 15 on the housing 1, thus preventing complete removal of the bolt from the housing. A semicircular ferromagnetic screen 27 in the form of sheet or rods may be provided which prevents operation of the magnetised bolt by the external magnet from one side of the door. The bolt 3 may incorporate two magnets 20a, 20b with like poles facing and an air gap between them, thus enabling operation of the bolt with a smaller magnet. The fastening means may have an associated alarm system with one or two switches 28, 29 sensitive to the influence of the locking bolt 3 such as a reed or diaphragm switch or magnetically operated microswitches. In a further embodiment the housing and keeper are fixed by countersunk screws (35, 36) which replace the studs 18, 26, the flanged brackets 10, 11 are dispensed with and the entrances of the housing and keeper are chamfered for easier access of the magnetic bolt. The fastening means may be adapted for surface mounting.
Patent GB-280135-A (GB)
Abstract: 280,135. Martin, R. June 27, 1927. Multiplying and dividing apparatus. -A machine for the four rules comprises a totalizing-counter 25, Fig. 8, and a revolutions counter 25<1>, mounted jn a frame 26, 35 on the crank-handle shaft 21 so as to be revolved, the totalizing-counter passing in the course of the revolution the teeth of racks placed in its path to a greater or less extent depending upon the values set up. The setting mechanism consists of guided flexible racks 12, Figs. 2 end 5, having at their front ends a spring-controlled button 13 differentially moved by hand along numbered slots 7, Fig. 3. The racks may be formed by bending a metal strip c, Fig. 14, and meshing it with a slotted strip b. The carriage 3 supporting the setting-racks is laterally slidable on fixed rods 4, 5 in order to varv the denominational value of the item set, and is held in each position by a spring-supported detent roller engaging teeth on the base of the carriage 3. The revolutions counter situated on the left is operated at each revolution by a tooth fixed on the carriage. Transfer-mechanism.-At transfer a stud on the face of the lower wheel wipes past a pin 27, Fig. 8, on a lever 39 and presses this to the left to place a pinion 37 in the path of one of a number of spirally-disposed fixed pins 34. The pinion has pins 38, Fig. 11, engaging the adjacent higher totalizer wheel 22 which is thus turned one more step. The levers 39 are mounted on the squared portion of the main shaft and at their other ends are loosely connected with a spring- controlled rod 43 which at each revolution is displaced axially by a fixed projection 29 so as to restore the levers and therefore the transfer wheels 37 to normal position.
Patent GB-158402-A (GB)
Title: Improvements in mixers for dough and like plastic substances
IPC: B01F7/04
Filed: 1919-11-12
Abstract: 158,402. Owen, J. W. Nov. 12, 1919. Stationary batch-mixers with rotary stirrers; rotary batch-mixers-A cylindrical container a of a kneading-machine for dough &c. is fitted with two sets of coaxial mixing bars b<1>, c<1>, carried on arms b, c, respectively. The arm c carries a bar c<1> at one end, as shown, or may carry bars at both ends. The bar c<1> acts as a scraper against the inner surface of the cylinder, and is of triangular section as shown in Fig. 3. The bars b<1> act near the bars c<l>, and are of lozenge-shaped section. The mixing-bars are connected to axes b<2>, d actuated through gearing such as is shown in Fig. 4, so that the bans b<l> move faster than the bar c<1>. The outer edges of the bars b<1>, c<1> are slightly curved. The cylinder may be stationary or may be revolved by a pulley i engaging a friction ring i<1> on the end of the cylinder.
Patent GB-703379-A (GB)
Title: Spectacle frames
IPC: G02C1/04
Filed: 1951-11-30
Abstract: 703,379. Spectacle frames. WHEWAY, F. O. Nov. 6, 1952 [Nov. 30, 1951], No. 28111/51. Class 97(i) Spectacle frames of the brow-bar type have lens securing means comprising a pair of claws for each lens, which engage notches in the lenses, one of said claws being pivoted on a screw which serves to secure the claw to the frame. As shown, the claw c is fixed while the claw g is mounted on a sleeve f through which the screw e passes into the threaded boss d, which is secured to the frame. The ends of the sleeve f and the boss d may be chamfered as shown so that the claw is given an angular movement about its pivot on tightening the screw.
Patent GB-630691-A (GB)
Title: Improvements in or relating to mechanical pencils
IPC: B43K21/12
Filed: 1946-09-20
Abstract: 630,691. Propelling pencils. ARMSTRONG, J. J. V. (Scripto, Inc.). Sept. 20, 1946, No. 28175. [A Specification was laid open to inspection under Sect. 91 of the Acts, Sept. 20, 1946] [Class 146 (iii)]  A mechanical pencil comprises a split tube axially mounted in a screw threaded barrel and an inner cap fixedly carried by the barrel while an outer cap is fitted over the inner cap for rotation relatively thereto, means being provided  to cause the tube to partake of the rotational movement of the outer cap relatively to the barrel. A lead 27 is carried by a resilient split portion 26 of a clutch 19 carried on a rib 23 formed on an annular member 20 which is in threaded engagement with the threaded bore of the barrel 15. The clutch 19 is supported by lugs 32 and 33 which engage behind a shoulder 34 on the rib 23 while a rounded shoulder 25 on the rib 23 is in engagement  with a lug 35 on the clutch. A split tube 17 which passes through the member 20 is provided at its rear end with wings 441 and 471 which support a disc 40 having wings 59, 60 and 61 in frictional contact with the inside of an outer cap 62 and wings 56, 57 and 58 in frictional contact with a cap  50 fixed on the barrel 15. On rotation of the cap 62 in the direction to advance the lead the tube 17 is rotated by a lug 49 relatively to the barrel and the member 20 is advanced with the clutch 12 carrying the lead. When the clutch 12 abuts a shoulder 37 further forward movement of the clutch is prevented so that the shoulder 25 of the rib 23 co-acts with the lug 35 to rotate the clutch, the lug 35 moving into a cut away portion 36 of the tube 17. Further rotation of the cap 62 causes the shoulder 34 to move forward from the lugs 32 and 33 and the end 24 of the rib 23 expels the lead. Further rotation of the cap 62 will only cause slippage between the cap 62 and wings 59, 60 and 61. Rotation of the cap 62 in the reverse direction will retract the lead.
Patent GB-171282-A (GB)
Title: An improvement relating to the manufacture of coal gas
IPC: C09K5/12
Filed: 1920-10-06
Abstract: A weighed quantity of coal is immersed in a bath of molten lead kept at the desired temperature and the products of carbonization are collected and measured thereby giving the value of the coal. The pieces of coal are confined in a cage and plunged quickly into the molten metal under a bell-shaped vessel communicating with a condenser and gas-meter.
Patent GB-684724-A (GB)
Title: Cathode ray tube indicator arrangement
IPC: H04N5/74
Filed: 1950-11-20
Abstract: 684,724. Cathode ray tubes. BENDIX AVIATION CORPORATION. Nov. 20, 1950 [Dec. 19, 1949], No. 28357/50. Class 39(i) In cathode-ray apparatus in which an image is !formed on a fluorescent screen, ultra violet light is formed into a pattern and projected on to the 'screen to form reference indicia preferably in different coloured fluorescent light. The indicia may be scales of voltage or time, cursors for tracking purposes, or maps of an area being scanned by a radar device. In one form, Fig. 1b (not shown), ultra violet light is passed through a mask with pervious and non-pervious areas to ultraviolet, the pervious areas being formed in a pattern to conform to the desired form of the indicia. The projector, including a condensing and objective lens as well as the mask, is arranged obliquely to the cathode-ray tube axis so that the pervious areas of the mask must be distorted from the desired shape of the indicia. Such a mask is prepared by photographing indicia drawn on a dummy block by means of an obliquely arranged camera, Fig. la (not shown). In a modification, Fig. 2 (not shown) the screen may be illuminated by ultra violet light on its inner surface instead of on its outer surface. In this case a portion of the side wall of the tube must be made transparent to ultra violet light. In another modification, Fig. 3, a Schmidt projection system comprising spherical mirror 19, correcting lens 20 and tilted mirror 21 is employed to project the image on to a viewing screen (not shown). In this case the ultra-violet light is projected through a central aperture in the mirror 19 on to the cathode-ray tube screen. The following prior art devices are referred to: (1) Scales marked on the tube temporarily or permanently, as by painting or etching, (2) Markings on plastic sheets placed over the face of the tube, (3) Mechanical cursors in association with cathode-ray tubes, (4) Use of the electron beam to generate indicia intermittently in alternation with the image, (5) Optical projection of indicia on to the interior or exterior screen surface in visible light as described in U.S.A. Specifications 2,251,984 and 2,316,550.
Patent GB-1510338-A (GB)
Title: Chain conveyor
IPC: B65G47/08
Filed: 1975-07-04
Abstract: 1510338 Endless conveyers for elongated articles SKF INDUSTRIAL TRADING & DEVELOPMENT CO BV 4 July 1975 [9 July 1974] 28362/75 Heading B8A Elongated articles such as 12 (Figs. 1 and 5) or 26 (Fig. 6) are transported by pocketed members 5 carried by conveyer chains, the members 5 having a bearing surface 7 which co-operates with a surface 8 mounted between the chains. The member 5, as it rises between feed rails 13, picks up an article 12 and carries it to a discharge shoot 17. The lateral alignment of the articles 12 in the members 5 may be maintained in one direction by the collared configuration of the article, and in the other direction by an adjustable guide rail 16. A second rail 16 is mounted on the other side of the conveyer when the article 12 has no locating collar (as in Fig. 3, not shown). In another modification (Fig. 5), U-shaped brackets 25 are mounted on each member 5 to retain the article 12 against axial movement. The width of the rails 13 is adjustable at 29, 30.
Patent GB-647396-A (GB)
Title: Improvements in or relating to terminal connections for the voice coils of loudspeakers
IPC: H04R9/04
Filed: 1948-11-02
Abstract: 647,396. Couplings. GROTEFELD, H. W. G., and SMALL, C. J. P. Nov. 2, 1948, No. 28418. [Class 38 (i)] In a terminal connection for a loud-speaker voice coil, the' conductor 13 of the coil is wound helically about a filament 14 and the helix directly connected to a stationary terminal. The end of the connection is reinforced with a helix of tinned copper wire 15 prior to attaching it to the terminal. The conductor 13 may be aluminium ribbon and the filament 14 is preferably a copper tinsel.
Patent GB-1235837-A (GB)
Title: Method and apparatus for applying adhesive to marginal edges of fabrics
Inventor: OHASHI HIROSHI
IPC: A41H43/00
Filed: 1969-06-05
Abstract: 1,235,837. Applying adhesive to edges of fabrics. H. OHASHI. 5 June, 1969 [22 July, 1968; 30 April, 1969], No. 28460/69. Heading D1L. Sheets of fabric 10 cut out in a desired shape are stacked and clamped between two plates of the same configuration as the fabric and dipped in adhesive so that the edges of the fabric are coated with adhesive. The fabric stack is then mounted on a table 9 adjacent to a moving belt 1 and the fabric sheets drawn off in pairs, by a thin plate 13, towards a suction pipe 11 and the belt 1, one edge of the fabric being held against the belt by a pincher 8. The fabric is passed through a heater 14 to dry and then passed between rollers 15, 16 to force the adhesive covered edges to adhere together.
Patent GB-242095-A (GB)
Title: A bedstead-drawer, table, or the like, and attachments for same
IPC: A47B88/04
Filed: 1924-11-27
Abstract: 242,095. Gilmore, C. F. Nov. 27, 1924. Bed tables.-The guides or runners 1 for supporting a drawer 13 or a slidable table beneath the frame members 9 of a bedstead are detachably secured to the frame members so as to allow of slight transverse adjustment. Fig. 3 shows a construction in which the runners 1 are slotted at 10 to allow a slight adjustment of the clamping hooks 11. In the construction shown in Fig. 8 the adjustment is made by means of the screws 15. Distance pieces 4, filling pieces 7, and a cover 8 may be provided, and the drawer or table may be withdrawn from either side of the bed.
Patent GB-876411-A (GB)
Title: Improvements in or relating to suction cleaners
Inventor: CARPENTER KENNETH
IPC: B60S1/38
Filed: 1959-08-20
Abstract: 876,411. Suction cleaners. ASSOCIATED ELECTRICAL INDUSTRIES Ltd. May 26, 1960 [Aug. 20, 1959], No. 28529/59. Class 8(1). A suction cleaner has power driven brushes (not shown) and a suction hose 11, Fig. 1, the inner end of which has an outer combination sleeve 13, 14, 15 which may be rotated to disconnect a driving ring 1, Figs. 2 and 3, on the bottom of a fan shaft (not shown) from an idler wheel 2 coaxial with a pulley 5 both mounted on a rocking plate 3 pivotable about a stud 4, the rocking plate 3 being connected to the cleaner casing via a spring 7, the pulley 5 being connected to the brush shaft (not shown) and driven by a flexible belt 6. Clockwise rotation of the intermediate sleeve 14, via the outer sleeve 13 causes its extension 15 to rotate within a cylindrical socket 9, formed with an axial slot 18 communicating with an arcuate slot 19, thereby forcing a cam 16 formed on one end of the extension 15 between the driving ring 1 and the idler wheel 2 and causing the rocking plate 3 against the action of the spring 7, to rotate about the stud 4, thereby disconnecting the drive, a pin 17 on the extension 15 travelling along the arcuate slot 19 to lock the drive in its disconnected position, this action being assisted by a further pin 20 on the extension 15, travelling in a slot 21.
Patent GB-303143-A (GB)
Title: Improvements in acoustic films and in their methods of manufacture
IPC: G03B31/00
Filed: 1928-10-04
Abstract: 303,143. Soc. des Etablissements Gaumont. Dec. 29, 1927, [Convention date]. Void [Published under Sect. 91 of the Acts]. Sound recording and reproducing apparatus associated with kinematographs; record, combined phonograph and kinematograph. -- A plurality of acoustic records are made side by side on the combined picture and sound record described in the parent Specification and in Specification 300,235, and these serve to reproduce simultaneously different ranges of sound in various reproducers specially adapted to the particular range and suitably positioned in relation to the apparent source of the sound on the screen. Alternatively, some of the records may control relays for producing acoustic or luminous signals in synchronism, with the other sounds and the picture being reproduced. The sounds are recorded and reproduced by rays outside the visible range, and the effect of the various thicknesses of the film after development of the picture may be reduced by applying a thin coating of gelatin over the developed film. The Figure shows three records A, B and C across the width of the record strip, the records A and C controlling the action of the rays on photoelectric cells S, S<1>. Specification 297,733 also is referred to.