baber/WOPTO huggingface dataset:
Patent GB-376356-A (GB)
Title: Improvements in the isolation or purification of menthols
IPC: C07C35/12
Filed: 1931-04-10
Abstract: Menthol or one of its stereoisomers is separated from mixtures of menthols with one another or with other substances by treating the mixture with orthophosphoric acid and decomposing the resulting addition product, e.g. by heating it alone or with water, into its constituents.  In the treatment of mixtures of menthols, a selective isolation of one of the isomers may result from the use of insufficient phosphoric acid to combine with all the menthols present.  The addition compound of the menthol may be purified, or the addition compounds with two or more menthol stereoisomers separated, by fractional distillation, recrystallization, fractional steam distillation, or by further treatment with orthophosphoric acid, and the process may be combined with the purification method described in Specification 297,019, [Class 2 (iii), Dyes &c.].  The process is particularly applicable to the crude mixture of isomeric menthols obtained by hydrogenation of thymol, menthones, menthenols and menthenones or by isomerization of these mixtures--see Specifications 213,991 and 238,314, [both in Class 2 (iii), Dyes &c.].  Examples are given of (1) the isolation of racemic menthol from a mixture thereof with racemic isomenthol obtained from the hydrogenation of piperitone; (2) the separation of neomenthol from a mixture containing it, which has been partially purified by the process of Specification 297,019; (3) the isolation of l-menthol from Japanese peppermint oil, and (4) the purification of the racemic menthol product of (1) by the method of Specification 297,019. The Specification also states that the crude hydrogenation or isomerization products of thymol, menthones, &c. may be treated by one of the processes described in Specification 297,019 to remove the neomenthol and the product treated with orthophosphoric acid to remove isomenthol and any residual neomenthol and yield a purified inactive menthol; or the same crude starting material may first be treated with orthophosphoric acid to remove isomenthol and the product freed from neomenthol by one of the processes described in Specification 297,019. Specification 374,893 also is referred to.
Patent GB-1292936-A (GB)
Title: Improvements in or relating to belts for carrying work elements
IPC: F16G5/00
Filed: 1971-04-22
Abstract: 1292936 Mowing machines OMARK INDUSTRIES Inc 22 April 1971 [30 April 1970 20 Nov 1970] 10744/71 Heading A1F An endless V-belt 20, for carrying the cutters of an impact mowing machine, has T-section connectors 24 retained in the belt by their end plates 26 which are positioned at the vented axis of the belt to reduce strain adjacent the plates when the belt is flexed. The belt is composed of fibre-filled rubber or other elastomeric material reinforced by a row of stranded polyester cords 22 and is encased in a sheath of nylon or polyester yarn 46. A buffer layer 23 of rubber reinforced with nylon fabric is placed between the cords 22 and the plate 26. A cutter element 32 is pivoted to each connector 24 by a pin 44 and is kept in the extended position by a slotted spring plate 30 bearing against, a flat area on one end. When a blade strikes an' obstruction spring plate 30 permits it to pivot back behind the front edge of the mowing machine even where the belt is prevented from deflecting by a pully 16. Preferably the general plane of the cutting element 32 is offset 10‹ from its direction of travel and the leading edge is inclined at 47‹ to this direction. The blades may be sharpened while in use as described in Specification 1,282,491. (For Figures see next page)
Patent GB-1080971-A (GB)
Title: Toothbrush power handle assembly
IPC: A61C17/34
Filed: 1965-03-15
Abstract: 1,080,971. Toothbrushes. GENERAL ELECTRIC CO. March 15, 1965 [April 2, 1964], No. 10763/65. Heading A4K. An electric toothbrush handle assembly comprises a casing 22 containing a unitary frame 17 with a battery operated motor 13, reciprocating plunger 15 and a ratchet switch 14, for controlling the motor 13, all mounted on the frame 17, which has projections for engaging slots 50 in the casing 22. The casing 22 is made of a resilient material which is deformed to an elliptical shape to insert the frame 17. A boot 23 and cover 24 are then placed over the plunger 15. The plunger 15 is reciprocated by means of a cam (37), Fig. 2 (not shown), contacting abutments (41 and 42) on arms (27) of the plunger, and rotated by an integral gear (34) meshing with a pinion (33).
Patent GB-1458231-A (GB)
Title: Dust control for power floor treating apparatus
IPC: E01H1/08
Filed: 1974-03-12
Abstract: 1458231 Floor sweeping apparatus TENNANT CO 12 March 1974 [16 March 1973 10 Dec 1973] 10936/74 Heading A4F [Also in Division E1] The description is substantially identical to that in Specification 1458232, the claims being directed to a different aspect of the apparatus which includes the provision of a baffle surface situated in the tool receiving enclosure and positioned so that the tool rotates from the opening, through which the tool protrudes to reach the work surface, to the evacuation port and then to the baffle surface, the baffle surface minimizing transference of dust from the upper portion of the enclosure to the lower portion thereof.
Patent GB-1531516-A (GB)
Title: Controlled release article
IPC: A61K9/02
Filed: 1976-03-18
Abstract: 1531516 Controlled release articles PROCTER & GAMBLE CO 18 March 1976 [19 March 1975] 10936/76 Heading A5B [Also in Division C5] A controlled release article especially adapted to maintaining a useful concentration of a surfactant compound in an environment external to said article, comprises: (a) a solution consisting essentially of: (i) a micelle-forming surfactant compound, and (ii) a solvent for said surfactant compound, said solution having a concentration above the critical micelle concentration of the surfactant compound, said solution being releasably enclosed in; (b) a stable, insoluble container (as hereinbefore defined), at least part of the wall of said container comprising a microporous membrane. The preferred articles are adapted for use in body cavities such as the vagina to release, for example, a spermicidal surfactant.
Patent GB-352411-A (GB)
Title: Improvements in water gas apparatus
IPC: C10J3/24
Filed: 1930-04-07
Abstract: 352,411. Water gas plant. HUMPHREYS & GLASGOW, Ltd. and MENGEL, E. C., Humglas House, Carlisle Place, London. April 7, 1930, No. 10997. [Class 55 (i):] The ash door of a water gas generator is provided with locking means, actuated through a system of cranks and connecting-rods or by a system of keys, which can only be unlocked to enable the door to be opened when the plant is shut down and the outlet to the main closed. Locking means are also provided which prevent the automatic operator being started unless the ash door is closed and the outlet to the main open, and these means may be responsive to variation in depth of the wash-box seal. A stem 1., Fig. 5, associated with the washer outlet valve f, which is moved by the hand-wheel 2, is connected by a system of cranks and connecting- rods to the locking device 9, Fig. 1, of the operating lever c of the ash door b. The connections are extended to a locking means 10, 11 associated with the control handle d of the automatic operator. The lock on the valve f comprises bolts 14, 15 which are adapted to be shot alternately into the paths of two stops 16, 17 at opposite faces of the handwheel. Bolt 14 is connected through a second crank-lever system to an arm 22 associated with control lever d and bolt 15 is connected by a third crank-lever system to arm 29 upon lever c. Movement of the control handle d from the " shut down " position to the " start up " position causes bolt 14 to lock the valve f in its open position, and movement of the lever c from the shut to the open position locks the valve in the closed position. In a modification, the valve f is provided with two locks each of which co-operates with the stem 1 to lock the valve open and shut respectively, each requiring a separate key, removable only when in the looking position. These keys fit looks in the control handle d and lever c respectively and can be removed only when both d and c are in the closed position. In a further modification, a float chamber 41, Fig. 11, is provided in connection with the washer and has a supplementary overflow 43. If the water flow be insufficient, the water level in the float chamber falls to the level of the outlet 43. A float 44 controls a switch 45 in circuit with the driving motor 46 of the automatic operator and also a lock comprising a bolt 47 operating a key 48, the arrangement being such that providing the water level is normal the switch 45 remains closed and the key can be withdrawn. This action opens a switch 49 in circuit with the motor and shuts the plant down. The withdrawn key 48 can then be used to unlock the ash door lever c, and cannot be removed to reset switch 49 until the ash door is locked in the closed position. If the water level falls below normal, the switch 45 is opened and the plant shut down, the key being locked in position.
Patent GB-309411-A (GB)
Title: Improvements in or relating to lawn mowing apparatus
IPC: A01D75/30
Filed: 1928-10-27
Abstract: 309,411. Worthington, C. C. Nov. 28, 1927, [Convention date]. Divided on 301,382. Tractors, internal-combustion engine.-A lawnmower machine for use on golf putting greens comprises a tractor having mowing-mechanism connected to it, the wheels of the tractor being provided with continuous treads adapted to make a splayed-out contact with the lawn or green. The gang lawnmower shown comprises a tractor controlled by an operator walking behind it and mounted on two relatively large wheels having yielding tread contacts with the lawn of large area. The large wheels 1 are connected by an axle structure 20 to which handlebars 2 are rigidly attached. The motor 3 is mounted on forwardly-projecting brackets 4 so as partly to balance the handlebars and the fuel tank 7 &c. mounted on them. Two forks 38 depending vertically from the axle structure 20 embrace the end parts of a cross-rod 39 of the front mower, the cross-rod coinciding with the axis of the ground wheels 36 of the mower. The wheels 1 are provided with lowpressure pneumatic tyres which exert uniform pressure on the grass and adjust themselves to lateral slopes. Uninflated pneumatic tyres may be used, as well as other forms of tread surface made of yielding material.
Patent GB-331289-A (GB)
Title: Improvements in and relating to junction boxes for electrical installations
IPC: H02G3/06
Filed: 1929-04-10
Abstract: 331,289. Cattle, E. P. S. April 10, 1929. Plug couplings; junction boxes.-Fittings built into floors or walls and for use with portable electric appliances, consist of an inverted Tee A with horizontal arms C, D secured to conduits and a vertical arm B threaded to receive a sleeve G which receives the coupling-socket and is adjustable to the floor &c. level. When not in use, the sleeve receives a plug H inlaid with linoleum, wood, &c. A boss K provides an additional outlet.
Patent GB-215393-A (GB)
Title: Improvements in radio receiving apparatus
IPC: H01F21/00
Filed: 1924-05-05
Abstract: 215,393. Marconi's Wireless Telegraph Co., Ltd., (Assignees of Shapiro, L.). May 5, 1923, [Convention date]. Drawings to Specification. Thermionic heterodyne receivers; receiving sets, construction of. - The subject-matter is identical with that contained in Specification 211,513, the claims being framed so as to cover the provision of tuning and switching means in a multivalve set for the purpose of enabling one of the valves to function either as a heterodyne generator or as an ordinary high-frequency amplifier according as it is required to receive continuous-wave or damped signals. When acting as a local heterodyne, the grid circuit of the oscillating valve includes the receiving aerial, which is slightly detuned to the incoming signal energy. The tuning means are arranged so that a single adjusting member simultaneously controls the setting of the aerial condenser and the valve of the primary and secondary inductances. Specification 217,918, [Class 37, Electricity, Measuring &c.], also is referred to.
Patent GB-108214-A (GB)
Title: Improvements in Frames for Motor Cycles.
IPC: B62K25/28
Filed: 1916-08-07
Abstract: 108,214. Coventry Acme Motor Co., and Robb, W. J. Aug. 7, 1916. Spring devices. - In a spring frame for a motor-cycle wherein the rear-wheel axle is carried by blocks P, Q clamped to leaf springs B and connected by radius-rods to the main frame, the road wheel is detachably connected to the sprocket-wheel O which is mounted on an extension S of one of the blocks. An extension R on each block serves as a pivot for the rod. The front ends V of the rods may be adjustably mounted in brackets W or the brackets may be adjustable on the frame members D. These members may be extended as shown at H to the front of the machine. The usual distance-piece T for the detachable wheel is provided upon the axle, and the rear cross-bar K is removable.
Patent GB-137726-A (GB)
Title: Improvements in building blocks and in walls formed therefrom
IPC: E04B2/02
Filed: 1919-05-05
Abstract: 137,726. Marques, C. May 5, 1919. Walls; double walls; reinforced block-work walls.-Hollow reinforced-blockwork walls are formed of blocks with transverse webs having grooves or channels 10 on their upper edges at right-angles to the groove on the flange or slab portion. Transverse ties or bonds lie in the grooves on the webs and connect the main bars which lie in the grooves on the flanges. End blocks also have holes a into which the ends of the bars may be turned down. Some or all of the cavities may be filled with concrete containing vertical bars. The webs of the blocks may project through to the faces of the wall.
Patent GB-508419-A (GB)
Title: Improvements in, or relating to, electrical couplings of the plug-and-socket type
IPC: H01R13/68
Filed: 1938-04-13
Abstract: 508,419. Two-part couplings. CRABTREE & CO., Ltd., J. A., McLOUGHLIN, H. F., and HARRISON, B. C,. April 13, 1938, No. 11285. [Class 38 (i)] The plug member of a plug-and-socket coupling is fitted with a fuse which can be selected according to the load for which the plug is to be employed, by making the body of the plug member in three parts, viz. a base c carrying the contacts e, a cover d, and an interposed part a, with a recess o in its face containing clips m for receiving a cartridge fuse. The clips m have shanks projecting through the bottom of the part a to form contacts that engage a contact j attached to a terminal k and a contact j<SP>1</SP> attached to one of the plug contacts e so that the insertion of the fuse completes the connection. The cover d is attached by a screw accessible only from the face of the base c so that access to the fuse can be obtained only when the plug is not inserted in the socket. The intermediate member a may be omitted if an unfused plug is required. Specifications 421,892, 439,897, 457,130, and 492,912 are referred to.
Patent GB-1159877-A (GB)
Title: An Improved Clip
Inventor: PERROCHAT JEAN
IPC: F16B19/10
Filed: 1967-03-10
Abstract: 1,159,877. Spring clips; stud and socket fastenings. A. RAYMOND. 10 March, 1967 [10 March, 1966], No. 11319/67. Heading E2B. A resilient synthetic plastics clip for attaching a channel shaped moulding to a support comprises a cup-shaped body portion 11 having a base 11 a and an annular wall 15  projecting upwardly  from the base and a shank 12 projecting downwardly from the base, wherein the wallis undercut so as to engage the moulding and . is divided by a plurality of radially extending slots 19 into a plurality of flexible tonques 20. As shown the slots extend into the base of the body portion and the tongues are equiangularly spaced around the axis of the clip an odd number of tongues being provided whereby each tongue lies diametrically opposite a slot. The shank is tubular and a pin 14 adapted for insertion into the shank is provided to expand the wall of the shank outwardly. The pin is connected to the body portion by an easily frangible web of material.
Patent GB-108862-A (GB)
Title: Improvements in Lathes.
Inventor: SANDOZ-MORITZ CHARLES
IPC: B23Q1/48
Filed: 1917-08-07
Abstract: 108,862. Moritz, C. Sandoz-. Aug. 9, 1916, [Convention date]. Turning.-The saddle of a lathe is given a partial rotation about the feed-screw as it is traversed so as to cut taper work. A bed 4 of circular crosssection carries an adjustable tailstock 5 and a saddle 5<1> having slides 7 and 8 to carry the tool 10. The feed-screw 11, Fig. 4, is engaged by a nut 13 having an extension 14 engaging a longitudinal slot 15 in the bed to prevent the nut from rotating, and a transverse slot 16 in the saddle 5<1> which it traverses while allowing partial rotation. A bowl 18 on an arm of the saddle engages a slot 19 in a guide 20 which can be turned about a pivot 21 and secured to fixed sectors 23, Fig. 2, when in adjusted positions, by dogs 25 and nuts 26. When the guide is inclined, the tool follows the generatrix of a cone coaxial with the lathe centres. The inclination of the guide is indicated by one or two scales on the sectors 23.
Patent GB-129444-A (GB)
Title: Improvements in or relating to the Preparation of Magic-lantern Announcement Slides.
Inventor: VOIGHT CLAIR VOIGHT RUCKER-NEE
IPC: G03B21/64
Filed: 1918-07-11
Abstract: 129,444. Rucker (nÚe Voight), C. V. July 11, 1918. Optically-projected signals.-For the preparation of announcement slides, a piece of flexible transparent material t is provided, placed in a folded piece of carbon transfer paper c, the two being placed in a paper or like wrapper, shown opened flat in Fig. 1. The wrapper has a back portion f, a front portion f<1> provided with an opening f<5> through which the carbon paper c is exposed, and an adhesive sealing-flap f<2>, these parts being separated by lines of perforations or other weakening f<3>, f<4> to facilitate folding and subsequent detachment. When required, the desired announcement is imprinted on the material t by hand or by a typewriter acting on the exposed portion of the carbon paper c. The transparent material bearing the announcement, together with the portion f<1> of the wrapper to serve as a mat, is then placed between two pieces of glass bound together to form a slide, Fig. 9. Only one piece of carbon paper may be used, so that an impression is made on one side only of the transparent material; or the carbon paper may be omitted and the announcement imprinted directly on the transparent material by the ribbon of a typewriter.
Patent GB-1451992-A (GB)
Title: Copy counting apparatus for a reproduction machine
IPC: G03G21/00
Filed: 1974-03-15
Abstract: 1451992 Copying XEROX CORP 15 March 1974 [20 March 1973] 11577/74 Heading B6C An apparatus for producing copies of an original, e.g. a xerographic machine, comprises a counting system to produce the data needed for a rental accounting. The counting system counts the total number of copies produced on one counter, and the total number of copies produced in runs of less than a specified number for each original, in another counter. A further counter may be provided to count the total number of copies produced in runs less than a different specified number, and a counter to count the number of originals from which have been produced runs of copies of more than a specified number. The counting system may be electrical, and exchangeable plug-in modules be provided for changing the numbers.
Patent GB-304080-A (GB)
Title: Improvements in or relating to rubber heels
IPC: A43B21/06
Filed: 1928-04-19
Abstract: 304,080. Jackson, L. Mellersh-, (Balloon Rubber Heel Corporation). April 19, 1928. Protectors, contruction of -A rubber heel lift of the kind having a normally elevated tread portion 11 of wear - resisting inelastic rubber and a resistance or reinforcing element 15 attached to and projecting from the iner face thereof, has the element 15 formed of soft non-wear-resisting rubber so arranged that a pressure of about 25 lbs. is required to flatten the elevated portion of the tread face into the plane of the tread face. The element 15 is of cylindrical shape with walls of uniform thickness. The marginal portion of the lift is secured to the solid heel in known manner by nails passing through holes 12 in the lift.
Patent GB-1182721-A (GB)
Title: Improvements in or relating to Fuel Injection Nozzles for Internal Combustion Engines
IPC: F02M45/12
Filed: 1968-03-11
Abstract: 1,182,721. Fuel injectors. INTERNATIONAL HARVESTER CO. March 11, 1968 [March 31, 1967], No. 11698/68. Heading F1B. Some of the fuel supplied to a fuel injection nozzle 10 flows to a chamber 36 when the needle valve 30 is opened so that the maximum fuel injection pressure is not reached until the chamber is pressurized to the supply pressure. Fuel flows from the passage 20 to the chamber 36 through an annular passage 26 when the passage 26 is uncovered by the shoulder 42. Between fuel injections the pressure in chamber 36 is relieved through the clearance between the upper portion of the valve and the bore 16 to the spring chamber which is connected to a leak-off system. The chamber 36 may be formed in the nozzle body 12 or partly in the body and partly in the valve.
Patent GB-490562-A (GB)
Title: Apparatus for re-conditioning or cleaning papermakers felts and such like
IPC: D21F1/32
Filed: 1937-04-24
Abstract: 490,562. Cleaning felts of papermaking machines. EVANS, W. P. April 24, 1937, No. 11776. [Class 96] Felts of paper-making machines are reconditioned or cleaned by one or more reciprocating suction-pipes e having curved mouths h<1> sealed as by water supplied at h<2> and acting on areas of the felt as it passes over a roll which may be grooved or perforated. The pipe e is secured at g to a slide d reciprocated along a channel-bar c by a screw i driven from the felt-supporting roll, a cam being moved at the end of each traverse to hold one of two pawls alternately out of engagement with a toothed wheel on the screw i.
Patent GB-513792-A (GB)
Title: Hinge construction
IPC: E05C17/08
Filed: 1938-04-20
Abstract: 513,792. Hinges. ROETHEL, J. H., and MARVEL EQUIPMENT CORPORATION. April 20, 1938, No. 11825. [Class 65 (ii)] A locker having a lid is provided with cooperating means on the hinged members so that on successive opening and closing movements, the lid becomes automatically locked in the open position. On opening the lid 11 the wheel 19 slides along the base 22 of the member 16 until the tooth 19a contacts with the cam surface 23 ; further opening will cause the tooth 19a to enter the notch 24 and partially rotate the wheel 19, this in turn will allow the tooth 19c to clear the corner 22a. Hence, when the lid is lowered the tooth 19c will enter the notch 25 and lock the hinge members in the open position. The cam edge 25a of the notch effects another partial rotation of the wheel which allows the tooth 19a to clear the corner 24a. To unlock, the lid is raised, the tooth 19a enters the recess 26, and the cam surface 26a effects a further rotation of the wheel 19 so that the tooth 19c clears the notch 25. The tooth 19c enters the recess 27 on the lowering of the lid and rides over the corner 22a which gives another turn to the wheel as the parts assume their original positions. The hinge members 16, 17 are attached to body 10 and lid 11 by welding.