baber/WOPTO huggingface dataset:
Patent GB-281212-A (GB)
Title: Improved device for serving meat, vegetables, salads and the like
IPC: A47G21/06
Filed: 1927-09-09
Abstract: 281,212. Gladwin, Ltd., and Gladwin S. Sept. 9, 1927. Tongs.-A device for serving meat, vegetables, salads, and the like comprises spoon and fork members b, a hinged together about midway between the ends of their handles. The handle a<1> of the fork member a is bent up to fit the ball of the thumb of the user.
Patent GB-517974-A (GB)
Title: Improvements relating to apparatus for delivering liquids and viscous materials
IPC: F16N13/10
Filed: 1938-08-12
Abstract: 517,974. Reciprocating pumps. ROWLAND, T. C. E., and PARKER, H. Aug. 12, 1938, No. 23777. [Class 102 (i)] In apparatus for delivering lubricating oil or other liquids which includes a pump having a reciprocating piston or plunger and a rotating driving shaft therefor, the latter is associated with mechanism for producing a slow suction stroke and a quick working stroke of the plunger, the pump delivering to a distributer whereby the liquid is directed in succession to each of a number of delivery conduits or groups of conduits. In the form shown, the plunger 9 makes its suction stroke under the action of a spring enclosed within a cap 13, and its working stroke is produced by a hammer blow delivered to the cap 13 by a cam arm 10 on an oscillating lever 8 under the action of a strong torsion spring. The lever 8 is brought to a standstill by engagement of a stop arm 12 with a head 41 which is adjusted by means.of a stem 38 to limit the stroke of the plunger 9. The lever 8 also carries an arm 11 having a weighted end 17 which engages a main cam 20 on a shaft 19, whereby the lever 8 is rocked in a direction to permit of the suction stroke of the plunger 9. A shoulder 14 on the cam arm 10 is then engaged by a tooth 37 on a spring-loaded pawl 15, until it is suddenly released by a trip cam 21 also carried by the shaft 19. The latter is provided at one end with a worm wheel engaging a worm on a driving shaft which is driven by a flexible shaft or the like from a rotating part of the apparatus to be lubricated. The cams 20, 21 carry L-shaped webs 23, 25 and 24, 26 acting as oil scoops,. the oil passing through holes 27 on to cam shaft 19. The distributer 43 may be of the kind described in Specifications 459,946, and 480,978, and may be rotated step-by-step by means of ratchet-and-pawl mechanism 44 actuated by an arm 45 associated with the lever 8.
Patent GB-972785-A (GB)
Title: Improvements relating arrangements for measuring electric power
Inventor: BAXTER PHILIP
IPC: G01R11/42
Filed: 1962-06-20
Abstract: 972, 785. Power measurement. ASSOCIATED ELECTRICAL INDUSTRIES Ltd. June 5, 1963 [June 20, 1962], No. 23779/62. Heading G1U. A power measuring arrangement for a D.C. circuit comprises an induction meter having a voltage system energized with A.C. in response to the alternate conduction of a pair of transistors supplied with a direct voltage proportional to the voltage of the D.C, circuit, and a current system energized with A.C. in response to the alternate conduction of'a further pair of transistors to which is applied a direct voltage derived from a shunt connected in the D.C. circuit. In the drawing the voltage coils V1 and V2 are energized alternately by current flowing through transistors T1 and T2 which are rendered conductive alternately by A.C. supplied to their bases from transformer T V; the voltage across the transistors is derived from the D.C. supply lines L1 and L2 through resistance RV. The supply to current coils C1 and C2 is similar, the voltage across transistors T3 and T4 being derived from the ends of a shunt S H connected in line L1. Transformers TV and TC may be separate transformers or separate secondary windings on the same transformer. The A.C, may be derived from an A.C. supply or from a D.C./A.C. converter circuit.
Patent GB-671845-A (GB)
Title: Improvements in and relating to stringed musical instruments
IPC: G10H3/18
Filed: 1949-09-15
Abstract: 671,845. Pianofortes. ROOPE, J. W. T. Sept. 14, 1950. [Sept. 15, 1949] No. 23805/49. Class 88 (ii)., A pianoforte or violin is provided with electrical amplifying equipment so that when muted, it can still be heard by a player wearing headphones. In a pianoforte, the mute comprises a graduated strip of felt 2 which can be inserted between the hammers and the strings. The strip is mounted on a wooden rail 1 controlled by a lever under the key bed. The rail also carries a metal strip 5 which together with the piano strings forms an electrostatic generator. The generator is connected through an amplifier to a socket into which the headphones are plugged. Alternatively, the strip 5 may be supported by but electrically insulated from the iron frame of a piano. A microphone fitted to the soundboard may take the place of the electrostatic generator. A violin is muted by means of a piece of sponge rubber under the feet of the bridge. A crystal microphone is attached to the bridge.
Patent GB-306369-A (GB)
Title: Improvements in or relating to variable speed gearing for motor cycles and the like
IPC: B62M25/00
Filed: 1928-08-18
Abstract: 306,369. Birmingham Small Arms Co., Ltd., and Hulse, F. W. Aug. 18, 1928. Addition to 294,780. Variable-speed gearing.-The invention of the parent Specification comprises two-speed clutch toothed gearing in a casing such as 11, Fig 1, combined with the crank-casing of the engine upon a motor-cycle, the change of speed being effected by sliding a hollow clutch sleeve such as 23 upon the driven shaft 8 of the gearing. There were pinions such as 2, 4 fast on the crank shaft 1 driving wheels such as 5, 7 loose side by side on the shaft 8, which is the countershaft of the vehicle. According to this invention, a third speed is obtained by an additional similar gear pair 3, 6, and there are three nested clutch members 18, 20, 21, instead of two, engageable alternatively by the hollow member 23 splined on the shaft 8.
Patent GB-597513-A (GB)
Title: Improvements in or relating to machines for removing burrs from metal articles
IPC: B24B9/00
Filed: 1944-11-29
Abstract: 597,513. Making hinges. CUDINI, R. G. Nov. 29, 1944, No. 23845. Convention date, March 22. [Classes 83 (ii) and 83 (iii)] [Also in Group XXIII] Scraping ; tools.-In a machine for removing burrs from metal articles such as the burrs 16, Fig. 7, which are formed when a strip 10 is slotted transversely in the manufacture of hinge parts, the strip is moved along a workholder past a scraping-cutter and an abrasive member which act in succession on the side A of the strip, and then past another abrasive member which acts on the curved surface B. The work-holder comprises a lower support 20, Figs. 1 and 5, and side guides 22 and the strip is pushed through the machine by hand tools engaging the slots in the work. The cutter 24, Fig. 3, is mounted on an adjustable carrier 34 and the work is pressed against it by a plunger 40 acted upon by a spring 48 and capable of being retracted by a handle 50 to allow introduction of the work. After passing the cutter, the upper surface of the work is acted upon by an abrasive block 26 carried by a holder 52 pivoted at 54 on a lever 52<1> pivoted at 58 to a bracket 56 carried by a support 60. Vertical slots on the support enable it to be adjustably clamped to pillars 62, 64 on the machine frame, and a compression spring located between the lever 52<1> and the holder 52 presses the block resiliently against the work: The compression of the spring is adjusted by a screw 74 in a stirrup 70 attached to the lever which presses against the top surface of the lever. The holder 52 and lever may be urged downwardly by gravity or by a compression spring 78, Fig. 1, pressing against the top of the lever and adjusted by a screw and nut 82 in a stirrup 76 attached to the support 60. The side A of the work which has been scraped by the cutter 24 is next engaged by an abrasive block 28 against which it is pressed by a vertically adjustable plate 90. The block 28 is carried by a housing 102, Figs. 1 and 5, on a plate 104 pivoted at 110 to a cranked lever 108. Screws 114 on plate 104 adjust the block about pivot 110 to align it with the work. The lever 108 is pivoted at 117 to a plate 116 carried by a transverse support 120 and is urged towards the work by an adjustable compression spring 122. The support 120 is transversely adjustable by a rod 136 in a horizontal fixed stirrup 134 and the stirrup is pivoted at 146 to a slide 144 vertically adjustable by a screw 156 and clamped by a screw 150, the pivot 146 allowing the support 120 to be swung away from the work. Removing cuttings.-An air jet may be directed by a pipe 160, Fig. 5, against the work adjacent to the cutter 24 to clear away cuttings.
Patent GB-1109852-A (GB)
Title: Improvements in formal compounds and their manufacture
Inventor: HARRIS EDWARD ERVIN
IPC: C07C43/30
Filed: 1965-06-04
Abstract: An hydraulic fluid comprises a mixture of hydroxylkyl formals o formula <FORM:1109852/C4-C5/1> wherein n + m are 2 or 3, x is 1, 2, 3 or 4 and R is 2-3C alkyl. The mixture boils above 350 DEG  F., and has a pour point below -40 DEG  F. In Example III such a mixture is disclosed, with a poly(trimethyldihydroquinoline) anti-oxidant, and a glycol-borax condensate corrosion inhibitor.  The properties of the composition are given, with reference to SAE test 70-R-3.ALSO:A mixture of formals of formula ROCH2OCnH2nOCnH2n(OCH2OCm\t H2mOCm H2m)xOH wherein n and m are 2 or 3, x is 1, 2, 3 or 4, and R is 2-3C alkyl, is prepared by heating for 1-30 hours at 75-100 DEG  C., a substantially water-free mixture of either or both diethylene and dipropylene glycols, one or more saturated 2-3C aliphatic alcohols, and paraformaldehyde, in the mol. ratio 1:1-15:1-3 (calculated as formaldehyde), in the presence of an acidic catalyst.  The product is filtered to remove undissolved catalyst, neutralized, e.g. with lime or NaOH to remove dissolved catalyst, and is stripped at reduced pressure and elevated temp. to remove products boiling below 350 DEG F. (at atmospheric pressure), the residue being recovered.  Suitable catalysts are NaHSO4 and acidic ion-exchange resins.  An azeotroping agent, e.g. benzene, may be added to remove by-product water as it forms, by continuous distillation.
Patent GB-506702-A (GB)
Title: Improvements in and relating to the manufacture of pastes
IPC: A21C1/12
Filed: 1938-08-13
Abstract: 506,702. Preparation of dough &c. PAYS, A. Aug. 13, 1938, No. 23919. Convention date, March 31. [Class 58] Apparatus for the manufacture of pastes, particularly dough, from cereals comprises the combination of a tank 1 in which the cereals are steeped and a separating mill in which the endosperm is removed from the cellulosic material. The tank 1 has a heat insulated casing provided with a lid 2 and an outlet valve 3, the lid having a water inlet 5 adapted to supply water to a felt distributing pad 6 and the bottom of the container having a water outlet 8. Baffles 4 are arranged in staggered relation in the container so that the material being steeped therein is maintained in comparatively shallow layers. The steeped grain passes to a conduit 13 leading to a distributer provided with helical ribs 14 and crushing- devices : the grain is thus crushed and distributed along the gap between rollers 10, 11, the one roller 10 being of hard and closely grained metal so that the dough adheres thereto whereas the other 11 is of porous metal or finely crushed flint agglomerated with cement or magnesia to which the ligneous particles adhere. Scrapers 15, 16 remove the material adhering to the rollers 10, 11, respectively. The rollers are pressed towards each other by adjustable springs 12. Specification 387,144 is referred to.
Patent GB-188834-A (GB)
Title: Improvements in or relating to electro-magnetic regulating or controlling devices for dynamo-electric machines
IPC: G05B11/01
Filed: 1921-09-08
Abstract: 188,834. Vickers, Ltd., and Etchells, J. Sept. 8, 1921. Electromagnetic interrupters; contacts. - In vibratory regulators for dynamo field circuits, means are provided for preventing welding together of the contacts and for cleaning the contacts. One contact 1 is mounted rotatably, for instance on the rotor shaft 3, and comprises a disc or cylinder, formed of, or provided with, a conducting rim 2 against which bears a brush 5 mounted on a spring 6 attached to the frame 8. An electromagnet 9 has a plunger 15 carrying the moving contact 10, normally pressed against the rim 2 by a spring 11. This contact is retracted by the electromagnet to introduce resistance in the field circuit. Ridges 16 assist in dissipating heat due to friction.
Patent GB-184082-A (GB)
Title: Improvements in elbows for pipes
IPC: F03B11/02
Filed: 1921-09-08
Abstract: 184,082. Kaplan, V. Sept. 8, 1921. Elbows. - An elbow is constructed so as to minimize losses caused by the deflection of a stream of liquid flowing in a pipe-line and, if desired, to convert velocity energy into pressure energy. The widths w<0>, w<1> &c., representing in elevation sectional areas f<0>, f<1>, &c. taken in a plane at right-angles to the drawing and normal to the inner wall ab, increase gradually towards the point of sharpest bend A in the outer wall cd, the sectional areas f<0>, f<1>, &c. each consisting of two sectors and an intermediate trapeze, the heights h', h<2>, &c. of which increase gradually towards the sharpest bend. The circular outlet f<4> being larger than the circular inlet f<0>, a conversion of velocity energy into pressure energy occurs. The same effects are obtained by making the radii of both sectors in each particular sectional area equal, in which case the intermediate trapeze becomes a rectangle, the circular inlet changing into an oval outlet. If only a deflection of flow is required, equal inlet and outlet areas are used and the radii of all the sectors may be equal, when, if the inlet and outlet sections be circles, the sectors in all the other sections will be semicircles having an intermediate rectangle with its greatest height at the sharpest bend. In this case, the inner wall ab may be a circular arc instead of a hyperbolic curve, as in Fig. 1, the outer wall cd being composed of straight lines with an intermediate circular arc. In all constructions the smallest radius of curvature measured at the convex generatrix ab is equal to or greater than double that measured at the concave side of the opposite generatrix cd.
Patent GB-674137-A (GB)
Title: Improvements relating to ethyl silicate and to its use in the production of refractory materials
Inventor: EMBLEM HAROLD GARTON
IPC: C08G77/02
Filed: 1949-09-17
Abstract: The invention comprises an ethyl silicate such that on distillation at atmospheric pressure under certain defined conditions (without any substantial reflux) 8-16 per cent by volume distils up to 180 DEG  C. and 39-55 per cent above 180 DEG  C. Such an ester comprises mainly ethyl orthosilicate with a certain amount of di-, tri- and poly-silicates.  The preferred composition is such that 12\sB2 per cent (or better \sB0.5 per cent) distils up to 180 DEG  C. and 48\sB 2 per cent (or better \sB0.5 per cent) above 180 DEG  C.  This may be made by (1) adding silicon tetrachloride and ethyl alcohol containing 5-6 per cent of water simultaneously to a small amount of ethyl silicate of the correct composition and heating the mixture, or (2) mixing together (a) an ethyl silicate prepared from silicon tetrachloride and aqueous alcohol, containing large quantities of higher silicates, and (b) pure ethyl orthosilicate prepared from silicon tetrachloride and anhydrous alcohol.  Any hydrochloric acid remaining in the product is removed by aeration until its content is below 0.1 per cent by weight, say 0.07 per cent by weight.  Examples are given of both methods of preparation.  The product may be hydrolysed to gelatinous silicic acid which may be mixed with refractory materials and fired to give silica as a bonding agent (see Group V).  Specifications 575,752 and 612,622 are referred to.
Patent GB-1128723-A (GB)
Title: Hydrocarbon oxidation process
Inventor: RUSSELL JOSEPH LEE
IPC: C01B35/00
Filed: 1967-05-24
Abstract: 1,128,723. Boric acid recovery. HALCON INTERNATIONAL Inc. 24 May, 1967 [31 May, 1966], No. 24092/67. Heading C1A. [Also in Division C2] Boric acid is recovered from a borate estercontaining hydrocarbon oxidation mixture prepared by liquid phase reaction between molecular oxygen and a C 4-20  hydrocarbon feedstock more than 95 molar per cent of which consists of saturated hydrocarbon in the presence of a boron compound capable of forming an ester with alcohol formed during the oxidation by hydrolysis of the oxidation mixture with an aqueous stream in a hydrolysis zone, separating the resultant mixture into an oxygenated organics stream and an aqueous boric acidcontaining stream, separatng a first crop of boric acid crystals from said aqueous boric acid stream leaving an aqueous boric acid mother liquor, withdrawing a purge stream from the aqueous boric acid-containing mother liquor, recovering from this purge stream a second crop of solid boric acid and returning this to the hydrolysis zone. An example is given.
Patent GB-190213-A (GB)
Title: An improved fluid pressure controlling mechanism
IPC: G05D16/18
Filed: 1921-09-10
Abstract: 190,213. Dollin, E. N. Sept. 10, 1921. Hand-operated gears; cam gears.-A manuallyactuated valve device particularly applicable for ccntrolling the piston operating the movable die of a die-casting machine is arranged to control the supply and exhaust of two different superatmospheric pressures to and from each end of the cylinder and also to permit one side of the piston to be connected to atmosphere while maintaining high pressure on the other side. The device comprises a series of lift valves mounted on parallel spindles and adapted to be opened against fluid pressure and the action of loading springs 25 by cams 32 - - 36. Cams 32, 33 and 34, 35 are mounted in common shafts 31, 31<1> connected by gears 30, 31<1> to a shaft 28 which carries the cam 36 and is provided with an actuating handle adapted to work between stops on the casing. The ports 3, 3<1> at each end of the cylinder 1 communicate with longitudinal chambers 8, 8<1> which overlap central inlet and outlet chambers 7, 7<1>. The cams are so shaped that in the initial position of the handle 27, valves 14 and 16<1> are opened to admit high pressure to the left of the piston and intermediate pressure to the right of the piston. In the second position, these valves are closed and the opposite pair opened to reverse this distribution of pressures, and in the final position, the valve 14<1> is maintained open to admit high pressure to the right of the piston, while the valve 23 is opened to put the other side of the piston to atmosphere through ports 20. The intermediate pressure is supplied by a lowpressure compressor delivering to a reservoir connected to the intake of a high-pressure compressor.
Patent GB-360960-A (GB)
Title: Rectifiers for alternating electric currents
IPC: H01L21/00
Filed: 1930-08-12
Abstract: One electrode of oxide contact rectifiers comprises an alloy of aluminium, manganese, and magnesium and a contacting layer formed as a barium compound.  The alloy may be 12 per cent aluminium, 1/2 per cent manganese, 87 1/2 per cent magnesium, and the aluminium and manganese content may vary between 20 and 1/2 per cent.
Patent GB-363351-A (GB)
Title: Improvements in tractors
IPC: B62D49/00
Filed: 1930-08-13
Abstract: 363,351. Tractors ; change speed gearing. DONALDSON, J., Gimmerburn, Otago Central, New Zealand. Aug. 13, 1930, No. 24288. [Classes 79 (i), 79 (ii), 79 (iv), and 79 (v).] Comprises a three-wheeled tractor in which the engine 41 drives the front steerable wheel 15 through a clutch 40, Fig. 4, change-speed gear 32, cardan shaft 30 and gearing, all located in front of the engine, and drives the rear wheels 50 through a clutch 42, changespeed gear 43 and toothed gearing located behind the engine. In the construction shown the frame 1 comprises parallel side bars of channel section converging at their front ends 2 to a point 3 where they are fixed to an arched member 4 having a circular part 5 bearing on a wheel fork 6. The fork is of inverted U shape and carries a circular track-ring 12 for a steering chain 12. A steadying device for the front fork 6 comprises a chain 12D passing round rollers 12<E> on the frame and having its ends secured at 12<F> to the steering ring 12. A buffer or shock-absorber is also provided for the fork-and-comprises a segment 58 bearing against the steering ring 12 and being fixed to a spindle 58<A> which has a buffer spring 58<D> and is carried in bearings by the main frame. The side bars of the frame are provided with lateral extensions or wheel guards 57. The front gear-box 32 driving the front wheel comprises a two-speed gear, and the rear gear-box 43 provides two forward speeds and a reverse. The two forward speeds of both gear-boxes are simultaneously controlled by a gear lever 39. Only the rear wheels are driven by the reverse gear. To obtain the reverse gear the hand-lever 39 is set in the neutral position and a pedal 50 is operated to rock a lever '47. This lever (1) by means. of a rod 58<1> moves a clutch fork 48<1> into engagement; against the action of a spring 67 and so clutches pinion 44<1> to the driving shaft, (2) slides the gear wheel 46<1> out of mesh with pinion 441, and (3) slides the reversing pinion 45 into a position in which it is in mesh with pinion 44<1> and wheel 46<1>. The front wheel is driven from the cardan shaft 30 through bevel gearing 29, 28, a transverse shaft 24 carried by the wheel fork 6, spur gearing 22, 19, and an internallytoothed wheel 20 on the front wheel. The rear wheels are driven from the rear gear-box through shaft 49, differential gear 51 and toothed gearing 54, 56.
Patent GB-376078-A (GB)
Title: Improvements in or relating to machines for drying varnished or gummed sheets of paper and the like
IPC: D21F5/00
Filed: 1931-08-29
Abstract: 376,078. Drying paper. BUSH, E. and BUSH, H., Globe Iron Works, Crown Point Road, Leeds. Aug. 29, 1931, No. 24324. [Class 34 (ii).] Machines for drying varnished or gummed sheets of paper and the like, of the kind wherein the sheets are carried on endless tapes through a longitudinal drying chamber through which hot air is circulated, comprise an arrangement of auxiliary tapes 4 for transmitting the sheets from the gumming cylinder 1 to the main tapes 6 passing through the drying chamber, a variable speed mechanism being provided consisting of coned pulleys 9, 10 connected by a belt 11 controlled by forks 12 adjustably mounted in guide rods 13, so that the relative speeds of the two sets of tapes 4, 6 may be varied by moving the belt 11. The sheets are led from the cylinder 1 to the auxiliary tapes 4 by downwardly inclined tapes 2.
Patent GB-1223258-A (GB)
Title: Improvements in or relating to collets
Inventor: GOLD DEREK LAWRENCE
IPC: B23B31/20
Filed: 1967-05-25
Abstract: 1,223,258. Chucks. G.I.B. PRECISION Ltd. 13 May, 1968 [25 May, 1967], No. 24366/67. Heading B3B. A collet chuck comprises a collet formed of a number of jaws 12 operative to grip a workpiece, and a number of interposed spacers 15, the spacers 15 being themselves gripping jaws operative for a workpiece of larger diameter. For gripping the said larger diameter workpiece the jaws 12 are replaced by jaws for an even larger diameter workpiece which become spacers between the then operative jaws 15. The jaws 12 and spacers 15 have a common external periphery and are retained by circlips and/or rings to form a frusto-conical collet assembly that is fitted into a chuck body. The collet jaws are resiliently urged apart by circumferential springs and the jaws have flat work-engaging surfaces. The chuck is operated by a plunger (10), (Fig. 2, not shown), acting on a deformable ring (9) to move a member 8 axially relative to the collet (11).