baber/WOPTO huggingface dataset:
Patent GB-208177-A (GB)
Title: Improvements in hobbing machines for cutting the teeth of gear wheels
IPC: B23F9/08
Filed: 1922-06-02
Abstract: 208,177. Taylor, H. E. June 2, 1922. Gear-cutting. - A machine is provided for hobbing bevel and other gear wheels with curved teeth having as their basis a crown wheel wherein the normal cross-section of each tooth and tooth space is uniform from end to end of the teeth, each tooth extending along the crown wheel in a curve of involute form. The blank G is mounted on a spindle F<2> carried by a table angularly adjustable on guides CC, the spindle being driven by worm gearing F<5>, shafts and bevel gearing F<10>, F<11>, and a differential gear P adapted to compensate for the rolling motion of the blank produced during the generating of the involute tooth profile. The bevel P<5>, Fig. 3, is driven through a worm wheel P<3>, change-speed gears N<2>, worm P<1>, shaft F<13> and further change-speed gears M<2> from the hob driving shaft L<2>, and the differential pinions P<6> which drive the shaft F" are journaled on pins secured to the shaft F<13>. The hob B, Fig. 2, is carried by a carriage D angularly adjustable on trunnions D<3> which are axially adjustable in a head A rotatable on a bearing A<2>. The hob spindle, which carries a fly-wheel E<12>, is rotated by means of gears E<3>, bevel pinions E<5>, K, and shafts E<6>, H, a differential gear L being provided to compensate for the rotary movements imparted' to the head through a worm drive P<2>, Fig. 3, change wheels N and the worm P<1>. In operation, the blank is arranged with the apex of its pitch cone in the axis 00 of the bearing A<2> and the side of the cone engaged by the hob, together with the acting side of the hob, is set perpendicular to this axis. The hob axis is offset from the axis 00 by an amount equal to the radius of the base circle from which the longitudinal involute curvature of the teeth is desired. The blank and hob are then rotated in intermeshing relationship and simultaneously the head is slowly rotated about the axis 00, the cutting of the blank being completed when the hob has been swung from one end of the teeth to the other. A multispeed driving gear or a variable-speed electromotor may be embodied in the machine. If it is desired to produce one size of gear only, the parts of the machine may have a fixed relationship. Milling-cutters.-The hob may be of truncated conical form or of cylindrical form with teeth of constant pitch from end to end, or it may be in the form of a gashed spur gear. The teeth may be increased progressively in height from one end of the hob to the other to produce gear teeth of varying depth.
Patent GB-1327637-A (GB)
Title: Apparatus for separating stacked sheet articles
IPC: B65H3/42
Filed: 1971-05-18
Abstract: 1327637 Feeding sheets WINDMOLLER & HOLSCHER 18 May 1971 [26 May 1970] 15571/71 Heading B8R A pile of sheets 10, Figs. 1 and 2, is supported between abutments 11, 12 and rests on rollers 5 which are movable around the axis of a shaft 3 and rotatable around their own axes in the opposite direction. The pile also rests on freely rotatable rollers 14. Each of the rollers 5 carries a sucker 6 to engage the bottom sheet and separate it and convey it to a procuring station 41. The leading end abutment 11 comprises a plurality of bars each secured by a bolt to a rod 15 which is vertically adjustable by a screw 20. Each bar supports a sleeve 24 in which is slidable a prong 25 having a flat 26 at its free end, the prong being adjusted by a handle 40, so that, whatever the thickness and consistency of the sheets in the pile, the prongs can be set to protrude sufficiently to allow separation of the bottom sheet while preventing separation of more than one sheet at a time.
Patent GB-575894-A (GB)
Title: Improvements in or relating to floor slabs and to floors constructed therefrom
IPC: E04F15/10
Filed: 1943-09-24
Abstract: 575,894. Floors. HILLS PATENT GLAZING CO., Ltd., and HINCHLIFFE, E. D. Sept. 24, 1943, No. 15664. [Classes 87 (i) and 107] A floor comprises a layer of triangular slabs 1 on a concrete bed 2 and a layer of impregnated felt or other damp-proofing material 4 interposed between the bed and the slabs which latter are provided with feet 3 at the corners to seat on the damp-proofing material. A decorative finish 5 may be applied to the slabs before or after they are laid in position.
Patent GB-1456353-A (GB)
Title: Immersion  sampler for molten material
IPC: G01N1/12
Filed: 1975-04-16
Abstract: 1456353 Immersion sampler LEEDS & NORTHRUP CO 16 April 1975 [6 May 1974] 15708/75 Heading B3F An immersion sampler for molten materials consists of a split mould body with mating parts recessed to define a sample cavity and flow passage for molten material with a porous refractory gasket, preferably fibrous material, between the mating parts. In an embodiment, a split mould 11, with identical halves 11a is assembled with a gasket 20 between the mating halves. The mould is made of ceramic material which will withstand the temperature of the molten material. The mould is constructed with an entrance port 11c leading to a Venturi 11d, which by virtue of its controlled throat 11d<SP>1</SP>, assists in the rapid chilling of the sample on withdrawal, consequently preventing flow-back of the sample. It also minimizes splashing and promotes homogeneity of the sample. Leading from the Venturi 11d to the sample cavity 11 h is a tubular runner 11e, the smoothness of the surface of which is improved by the presence of a heat resistant glass tube 15. The sample mould is vented through a groove 11i and through the porous gasket 20. A recess 11b at the entrance port 11c may be sealed off with a fusible disc 17, which may be a deoxidizer, i.e. Al, in the sampling of steel. A fusible cap 12 may be placed over the immersion end of the sampler to prevent ingress of slag, if present on the molten material, and further deoxidants may be placed in the Venturi 11d if required. The sampler may be contained immersion end down in a cardboard holder 13, with a handle 14 in order to plunge it into the material to be sampled.
Patent GB-807160-A (GB)
Title: Improvements in change-speed devices
IPC: F16H61/662
Filed: 1955-06-01
Abstract: 807,160. Variable-speed gearing. SOC. D'ETUDES DE RECHERCHES ET D'APPLICATION MECANIQUES. June 1, 1955 [June 1, 1954], No. 15722/55. Class 80 (2). A V-belt pulley or friction roller whose diameter is varied automatically by load comprises two conical members with studs engaged in opposite-handed helical grooves on the shaft, each conical member being urged axially by a spring. In the belt drive shown in Fig. 1, the driving and driven pulleys comprise pairs of conical members 2 and 12 with studs 3 and 13 engaging opposite-handed helical grooves 4 and 14 on the driving and driven shafts 1 and 11, with pairs of springs 5 and 15, the springs 5 tending to move the members 2 towards each other and the grooves 4 tending to move the members 2 apart, while the springs 15 and grooves 14 act in the opposite senses. In the case of a multiple belt pulley, intermediate double-conical members have studs engaging a longitudinal groove in the shaft. Fig. 7 shows a friction roller for driving a cycle wheel tyre 43 comprising plates 29, 30 mounted on the driving shaft 31 by studs 32, 33 engaging opposite-handed helical slots 34, 35 on the shaft, the plates being urged towards each other by springs 36, 37 and having interpenetrating curved ribs 401, 41 forming the variablediameter friction surface. In the form of friction roller shown in Fig. 10, sleeves 44, 45 secured to the shaft 46 have opposite-handed helical slots 51, 52 engaged by studs 53, 54 on rings 55, 56 with interpenetrating conicalended ribs 57, 58. Internal springs 66 guided on pins 68 urge the rings 55, 56 apart against flanges on the sleeves 44, 45. In other forms, the ribs are replaced by shaped troughs secured on the rings and filled with friction material. Specification 30003/12, [Class 80 (ii)], is referred to.
Patent GB-1089019-A (GB)
Title: Improvements in or relating to control systems for variable pitch propellers
Inventor: PARKES DUDLEY LLOYD
IPC: B64C11/36
Filed: 1965-04-13
Abstract: 1,089,019. Variable-pitch propeller control. SHORT BROS. & HARLAND Ltd. June 2, 1966 [April 13, 1965], No. 15802/65. Heading B7V. In a control system for controlling the pitch of the variable-pitch propellers of a twinengined aircraft a pair of pitch control lever assemblies 11 coarsen or fine the pitch of the propellers and a pair of lock members 14 coupled by a bridge portion 15 carrying a knob 16 are movable from forward stop 35 to rearward detent 40. The lock members 14 when in the forward position prevent fining of the pitch of the propeller below a predetermined pitch set on the indicator 17 and movement of the lock members 14 to the rearward position allows operation of the pitch control lever assemblies 11 to fine the pitch of the propeller below the predetermined pitch. During an operation of the pitch control lever assemblies 11 to coarsen the pitch of the propellers from a value below the predetermined pitch the lock members 14 are caused to move from the rearward position to the forward position when the pitch of the propellers has coarsened to the set predetermined pitch.
Patent GB-1416168-A (GB)
Title: Test apparatus
IPC: F02M65/00
Filed: 1972-04-06
Abstract: 1416168 Electrical testing apparatus SIMMS GROUP RESEARCH & DEVELOPMENT Ltd 27 March 1973 [6 April 1972] 15880/72 Heading GIN  In apparatus for testing the governor of a fuel injection pump 12, voltages representing the speed at which the pump is driven and the position of the fuel control rod 13 are applied is a recorder 17 which produces a display of the relative variation of the voltages as the speed at which the pump is driven is varied. As shown, the speed voltage is derived from a toothed rotor 14 and pick-up 15 and a converter 16 which provides a D.C. voltage, to the x-plates of the recorder and the position of the control rod is derived from a transducer 18 which provides a D.C. voltage to the Y-plates of the recorder. The pump is driven by a constant speed motor 10 via an adjustable coupling 11. The speed at which the pump is driven is increased until it reaches a preset value when a signal from the converter 16 causes the coupling to gradually reduce the speed. A signal at a low pre-set limit may also be provided.
Patent GB-120539-A (GB)
Title: Improvements in Coat and like Hangers.
Inventor: WALDAU ERIK ALEXANDER
IPC: A41D27/22
Filed: 1918-10-01
Abstract: 120,539. Waldau, E. A. Oct. 1, 1918. Hooks and eyes.-A hook for use on a coat chain is made of wire doubled upon itself, the joined ends forming the hook 4. Near the hcok the wire forms an eye 10 for engaging an eye 6, permanently attached to the coat. It then diverges to form loops 8, and returns to form the resilient guard 5 for the hook.
Patent GB-1383347-A (GB)
Title: Method of at least partially removing nitrogen oxides from gases
IPC: B01D53/56
Filed: 1972-04-06
Abstract: 1383347 Removing nitrogen oxides from gases FRIEDRICH UHDE GmbH 6 April 1972 [8 April 1971] 15900/72 Heading B1L NO and NO 2  and derivatives are removed from gases by scrubbing with a solution of a pentavalent vanadium salt in nitric acid. The nitrogen oxides are recovered and the scrubbing solution regenerated by heating the solution in the presence of an oxygen-containing gas.
Patent GB-379394-A (GB)
Title: Improvements in or relating to shearing apparatus
IPC: B23D19/02
Filed: 1931-06-01
Abstract: 379,394. Making battery plates. BRITANNIA BATTERIES, Ltd., 233, Shaftesbury Avenue, London, and BACHMAN, R. A., Olderest, South Street, Redditch, Worcestershire. June 1, 1931, No. 15985. [Classes 83 (ii) and 83 (iv).] Shearing apparatus, especially for profiling or sectioning lead plates for accumulators, comprises one or more rotating profiled cutters which are moved over the material 13 to be worked which is disposed on a support 5 having similarly profiled cutting edges 6 . . 11 and is moved at the peripheral speed of the cutters, whereby the material is cut and pressed through openings 17, 18, 19 between the cutting edges of the support. The support may be an endless conveyer 27 or may be reciprocated beneath the cutters. The conveyer may drive the rotary cutters, as shown in Fig. 4, and is provided with projections 28 for feeding the blank plates from a magazine 20.
Patent GB-945696-A (GB)
Title: Improvements in the treatment of common salt
Inventor: BOOTH CHARLTON LESTER
IPC: A23L27/40
Filed: 1961-05-03
Abstract: In blocks of compacted crystalline salt containing a water-dispersible binding agent, e.g. 0.1-5% of gelatine, animal glue or a gum such as gum acacia, the salt is in the form of three-dimensional dendritic crystals.  Specification 667,101 also is referred to.
Patent GB-477877-A (GB)
Title: Vehicle brake
IPC: F16D65/14
Filed: 1936-04-02
Abstract: 477,877. Brakes. KIRCHBACH, M. K. April 2, 1936, No. 16035/37. Divided out of 476,339, under which a Specification was laid open to inspection under Sect. 91 of the Acts, Oct. 6, 1936. [Class 103 (i)] [Also in Group XXVI] In a multiple-disc brake in which cooling liquid is forced through ducts in the friction discs, the flow of the liquid is throttled beyond the discs in order to obtain a damming of the liquid and ensure complete wetting of the discs. Discs 8, 9 rotating with the axle 1 and discs 14, 15, 16 rotating with the casing 2 have a plurality of holes 29-32 for cooling medium. Friction discs 14a, 15a, 15b, 16a attached to the discs 14-16 are provided with cavities 26 'having escape ports 27, 27a, which darn the liquid, to the interior of the brake drum. Ports 27 are considerably smaller than ports 27a so that most of the liquid escapes through the ports 27a. Cooling liquid enters through ports 28; 35 and is drawn off from the lower part of the drum by a pump. The brake is operated by a series of fluid pressure cylinders 23. In a modification the cooling liquid enters at 28 only and the friction disc 16a alone has a large port 27a through which most of the liquid escapes. In the modification shown in Fig. 5, one set of discs 47 of metal rotate with bolts 48 carried by discs 45, 46 on a hub 44 rotating with the wheel axle 43. The other set of discs 52 of friction material rotate with the carrier 54 which is adapted when the brake is to be applied to be looked by a brake band 88. Needle bearings 55 are arranged between the carrier 54 and the hub 44. Discs 49 are in one with an annular part 49b and discs 49a which are adapted to be pressed apart to apply the brake by fluidpressure cylinders 56 supplied by annular duct 61 and ducts 62, 63 passing through the centre of the axle. The cooling liquid is supplied through ducts 65, 66 annular duct 67, ducts 51, openings 49c and between the plates. Each plate 47 is provided with a ring of depressions. The depressions on each disc face alternately, in opposite directions. The depressions become shallower towards the outer edge of the discs in order to produce the throttling action on the liquid. Valve 69 and openings 49c which form nozzles also produce throttling. The liquid escapes by annular space 91, duct 68, check valve 69 and the interior 71 of the axle to a cooling radiator 76, Fig. 6. The liquid is drawn off and returned to the radiator 76 by means of annular passages 73, 80 formed by annular bevelled bodies 77, 82. When braking takes place brake operating fluid is conducted by a duct 84 to an annular passage 83 where it exerts pressure on packings 78 by means of the bodies 77, 82 thus obtaining a fluid tight joint. Flow of the cooling medium in the brake is induced by centrifugal force. The discs are formed of a number of sectors separated by spaces. The Specification as open to inspection under Sect. 91 also contains the same subjectmatter as Specification 476,339, as open to inspection under this Section. This subjectmatter does not appear in the Specification as accepted.
Patent GB-850930-A (GB)
Title: Bis-quaternary phenanthridinium salts
Inventor: STEPHENS FRANCIS FREDERICK
IPC: C07D221/12
Filed: 1957-05-21
Abstract: The invention comprises compounds of the general formula : <FORM:0850930/IV(b)/1> where n is inclusively 3-20 and X represents an inorganic or organic anion, for example chloride, bromide, iodide, methosulphate or p-toluene sulphonate, and the preparation of the halide salts by reacting together two molecular proportions of phenanthrioline and one molecular proportion of a polymethylene a  : o -dihalide containing 3-20 carbon atoms, preferably by refluxing the reactants in an organic solvent, or fusion of the reactants without a solvent at 150 DEG -200 DEG C.  Salts other than the halides are prepared therefrom; for example the dimethosulphate is prepared by reacting the diiodide with dimethyl sulphate.  The Provisional Specification discloses compounds of the general formula : <FORM:0850930/IV(b)/2> where A represents a polymethylene chain of 3-20 carbon atoms inclusively attached to the phenanthridinium nuclei in the a  : o  positions of the paraffin chain, or a xylylene residue, X represents an organic or inorganic anion, R may be a hydrogen atom, an alkyl, phenyl, amino- or halogeno-phenyl group, R1, R11 and R111 may each be an amino, acetamido or nitro group or a hydrogen or halogen atom.
Patent GB-181376-A (GB)
Title: Process and apparatus for enriching gas mixtures with respect to certain constituents thereof
IPC: C10L3/00
Filed: 1922-06-09
Abstract: 181,376. Goldschmidt Akt.-Ges., T. June 9, 1921, [Convention date]. Gases, separating mixtures of.-In the recovery or concentration of the constituents of a gas mixture by selective adsorption in a material such as carbon, the adsorbed gas or vapour is expelled by the passage of hot gas which has been previously enriched with respect to the constituent to be recovered; the adsorbent is subsequently cooled by the passage of cold enriched gas or by cold fresh gas. Thus, gas to be treated is passed by a blower c<1> through the adsorbent chamber or tower a; when the adsorbent is sufficiently charged, the chamber is put into communication with a heater b<1> containing enriched gas from a previous operation, and the hot gas circulated by a blower c<2>; the surplus gas or vapour in the heater system escapes through a valve d<1> and is collected in a gas-holder e ; for cooling the adsorbent, the chamber a is put into communication with a cooler b<2> containing gas from a previous working period and circulated by blower c<3>, and in this case the resulting decrease in pressure is compensated for automatically by the introduction of fresh gas through a valve d<2>; alternatively, fresh gas may be used for cooling, the heated gases being exhausted by the blower c<3>, and then passed through the cooler b<2> to a second adsorbent chamber (not shown).
Patent GB-957212-A (GB)
Title: Improvements in or relating to photometers
IPC: G01N21/72
Filed: 1961-05-03
Abstract: 957,212. Photo-electric flame photometry. FREDERICK G. KEYES Inc. May 3, 1961 [May 12, 1960] No. 16092/61. Heading G1A. A flame photometer comprises means to feed a sample solution into a burner flame, and photosensitive means receiving light from the flame and a filament lamp alternately. Sample solution is fed into a hydrogen or propane burner 24, Fig. 16, from a syringe 68. Light from burner 24 and a tungsten lamp 28 are chopped by a shutter 36 to fall alternately on a photomultiplier 22 after passing through a filter selected to transmit a wavelength characteristic of the element to be detected. Amplifier 256 provides an A.C. output depending in magnitude and phase on the difference in intensity of the light sources. This output is fed to a synchronous rectifier 46 comprising switches 264, 266 operated by cams 42, 44 on the shaft 39 of shutter 36. The D.C. output of rectifier 46 is displayed on a meter 260 with the switch 262 in its centre position. The lamp voltage is adjusted by resistor 246 until meter 260 reads zero and gives an indication of the concentration to be measured. The voltage is measured either using a meter 80 and potentiometer 298 or, more accurately, using meter 260 and potentiometer 290 with switch 262 in its right hand position. The remaining position of switch 262 enables the output voltage of the power pack 244 to be checked. In a modification, Fig. 17, (not shown) the output of rectifier 46 controls a servomotor to adjust the lamp voltage which then becomes a low impedence source of a process control voltage. Construction of burner. Oxygen is supplied to a manifold 182, Fig. 7, and is forced out of a circular orifice 180. A proportion of the oxygen controlled by valve 176 is admitted to the fuel duct where it forces the fuel gas against a tube 170 to atomise the sample solution supplied thereby. Mounting of burner. The flame is enclosed in a glass chimney 26 surrounded by asbestos 27 and having a window 214. Heat conducted back from the chimney to the burner tends to change the size of the flame and this effect is reduced by a heat shield 220 and heat exchanger 24 through which cooling air from a duct 54 is forced.
Patent GB-568164-A (GB)
Title: Safety razor blade sharpener
IPC: B24D15/10
Filed: 1943-10-01
Abstract: 568,164. Razor sharpeners. LAMPLUGH, E. Oct. 1, 1943, No. 16095. [Class 60] A device for holding a razor blade for sharpening, comprises a base 2, Fig. 4, with studs 4 for the holes in the blade 3 and a hole 8 in which an offset lug 7, Fig. 1, in a top plate 1 is received. The parts 6 of the base and top plate are bevelled at the same angle as the edges of a blade which is sharpened by a hone. The base has cut-away parts 9 to enable the blade to be gripped by the fingers and with a stud 10 engaging a hole in the top plate to ensure that the latter is removed by a lifting movement.
Patent GB-169002-A (GB)
Title: Improvements in and relating to hook and eye fastenings
IPC: A44B13/00
Filed: 1920-06-14
Abstract: 169,002. Wheeler, M. A., and Bates, E. M. June 14, 1920. Safety-pin fastenings a n d suspenders. - Readily . detachable hook and eye members each comprise a plate 1 having loops 3 formed at one end, its other end being rolled over at 4 to form a bearing for the crosspiece of a U-shaped pin 5, the ends of which are adapted to engage the loops 3. The hook member B is formed with an integral tongue 8 adapted to engage in the opening 7 formed in the integral ear 6 of the eye member A. Specifications 26464/01 and 26690/02, [both in Class 43, Fastenings, Dress], are referred to.
Patent GB-1189978-A (GB)
Title: Bracelet, Especially Watch Bracelet
IPC: A44C5/10
Filed: 1969-03-27
Abstract: 1,189,978. Non-extensible bracelet. RODI & WIENENBERGER A.G. 27 March, 1969 [10 Oct., 1968], No. 16163/69. Heading A3H. A non-extensible but adjustable bracelet may include, or be entirely made up of a variable number of frame links 1 having longitudinal edge rails 2 and rails 3 transverse to these, which are articulately interconnected by sleeves 4 having transverse slots 6 through which the transverse rails 3 may pass and be retained in the sleeve 4 by removable leaf spring keeps 8 which close the slots 6 and are themselves held in position by their spring action against the sleeves 4 and/or the frame links 1. In an embodiment the leaf spring keep 8 is bent so as to abut the flanges 5 defining between them a slot 6 in the sleeve 4 with its middle portion 811, and the transverse rails 3 with its end portions 8<SP>1</SP>. Midway along the flanges 5, recesses 7 may be provided to engage a suitably shaped projection 9 formed on the leaf spring 8 to retain the latter in the sleeve 4. Alternatively the recesses may be in the form of notches in the transverse rails 3 or projections may be provided on the leaf spring for engagement with both sleeve and transverse rail recesses. The projections may be provided on the sleeve or rails and the recesses on the spring. The transverse rails 3 may be offset from the rails 2 to form shoulders 11 which abut the ends of the leaf spring 8 when the bracelet is in position on the wearer. The spring ends 8<SP>1</SP> may be curved upwards.