baber/WOPTO huggingface dataset:
Patent GB-777831-A (GB)
Title: Improvements relating to contour machining
Inventor: STOKES JOHN ARTHUR
IPC: B23Q35/12
Filed: 1954-03-05
Abstract: 777,831. Electric copying - machines. BRITISH THOMSON-HOUSTON CO., Ltd. Feb. 23, 1955 [March 5, 1954], No. 6525/54. Class 40 (1). [Also in Group XXII] An electric correspondence control system for a contouring machine having a machining head 1 universally adjustable about axes cl, c2 comprises means S1, S2 for comparing signals representing the actual angular positions of the head about the axes c1, c2 with reference signals representing desired angular positions for the head, and means SM1, SM2 for effecting any necessary correction to the position of the head as revealed by the comparison. As applied to contour milling with an end milling cutter, the angular adjustment of the head maintains the axis a of the cutter spindle substantially normal to the surface required for the workpiece, preferably under the control of a tracer 11 universally mounted about corresponding axes c1<SP>1</SP>, c2<SP>1</SP> in a support 13 and having at least four spring- pressed fingers 14 to engage a model of the desired contour. The tracer is rocked about the vertical axis c2<SP>1</SP>, to maintain its axis a<SP>1</SP> substantially normal to the surface of the model, by an electric servomotor SM operated by error signals generated by an A.C. bridge circuit B whenever the pressure of the model on one of the horizontally aligned fingers is not the same as that on the other, or the fingers are not displaced in a predetermined relationship, the bridge circuit including coils 15, the inductance of which is varied by displacement of the fingers; signal translating elements A are connected between the bridge circuit and the servomotor, which rotates the support 13 through gearing G. A selsyn transmitter S2<SP>1</SP>, or the equivalent, coupled to the tracer, transmits signals which represent the instantaneous position of the tracer 11 about the axis c2<SP>1</SP>. These signals may be transmitted direct to a selsyn receiver S2 which conveys error signals through translating elements A2 to an electric servomotor SM2 geared to a support 3 for the cutter head in order to give the latter the same instantaneous positions about the axis c2 as those of the tracer about its axis c2<SP>1</SP>. Alternatively, the signals may be recorded on a magnetic tape for reproduction later, or they may be derived by calculation. A similar arrangement of selsyn transmitter S1<SP>1</SP> and receiver S1, with an electric servomotor SM1, may be used to enable the cutter head 1 to follow movements of the tracer about the horizontal axis C1<SP>1</SP>, the torque produced by unequal pressures on the vertically aligned fingers 14 of the tracer preferably rocking the tracer about the axis c1<SP>1</SP> without servo assistance; in this event, the vertically aligned fingers may be fixed in relation to the tracer.
Patent GB-217287-A (GB)
Title: Improvements relating to the manufacture of threads and filaments from cellulose derivatives
IPC: D01F2/30
Filed: 1923-03-07
Abstract: Artificial silk, artificial horsehair, &c. are made by using the acetates of the parent Specifications in concentrations in the spinning solutions of less than 20 per cent, preferably of 10 or 5 per cent or less.  The threads and filaments so produced one of round section, show less "glitter" effect, have good covering power, exhibit increased strength both wet and dry, and do not become woolly when heated with water.  Specification 210,108 also is referred to.
Patent GB-1218432-A (GB)
Title: Personal safety equipment for use by workers at height
Inventor: CLYDE ALEXANDER KENNETH
IPC: A62B35/04
Filed: 1968-02-09
Abstract: 1,218,432. Ladder safety device. BARROW HEPBURN & GALE Ltd. 7 Feb., 1969 [9 Feb., 1968], No. 6578/68. Heading E1S. A rail R, which can be fixed to a rung or stile of a ladder or in a position adjacent a ladder, carries a runner which can be moved up or down the rail via a coupling D-ring 15 by which the runner is fastened to the user which runner locks on to the rail when there is no upward pull thereon. The runner has two upper bars 1, 1' connected by a plate 3, forming an upper member, the bars 1, 1' being grooved as shown on their opposed faces, and a similar lower member, the members being connected together by parallel links 5, 6,torsion springs being provided to bias the bars 1, 1' to the left (in the Fig. shown) relative to the links. Steel bits 14 and a stop 16 are also provided. The rail R has cut outs near its lower end to allow the runner to be fitted thereon.
Patent GB-329980-A (GB)
Title: Improvements in or relating to connecting rods and crank shafts
IPC: F16C9/04
Filed: 1929-02-28
Abstract: 329,980. Kent, Ltd., G., Siddall, F., and Feet, A. Feb. 28, 1929. Connecting - rods.- A crank-pin is formed with flats 4 to enable a gapped connecting- rod 1 to be threaded on, the connecting-rod being then retained on an unreduced portion of the crank-pin by a split collar 5, the halves of which are held to gether by studs, or by a spring ring 7. The collar 5 may separate two connecting-rods on the same crank-pin, as shown. Instead of flats 4 the crank-pin may have a portion of reduced diameter, or a single flat 4 may be employed, one part of the collar 5 being in the form of a segment 9, Fig. 10, which engages the flat. A connecting-rod may be mounted on a gudgeon-pin in a similar manner.
Patent GB-587391-A (GB)
Title: Improvements in or relating to the polymerization and interpolymerisation of low molecular weight olefines
IPC: C08F10/00
Filed: 1941-05-23
Abstract: Solid and semi-solid polymers of ethylene and interpolymers thereof with one or more other compounds containing at least one ethylenic double bond, are manufactured by subjecting ethylene alone or mixed with the other compound or compounds to an elevated pressure in contact with a liquid phase and as a catalyst a per-compound which is insoluble therein, the catalyst being present or introduced in a dispersed or emulsified state and the reaction being preferably carried out with agitation and removal of heat.  The other compound containing at least one ethylenic double bond may be an olefine containing more than two carbon atoms or a substituted olefine, e.g. isobutylene, styrene or a substituted styrene, or an ester in which either the acid radical and/or the alcohol radical has at least one ethylenic double bond. The process may be carried out in a continuous manner, a p  dispersion of the catalyst being supplied to the reaction vessel. The liquid phase may be aqueous, the catalyst being an organic percompound such as benzoyl, acetyl or acetyl benzoyl peroxide, or may be non-aqueous, e.g. benzene or iso-octane, the catalyst being an inorganic per-compound such as potassium persulphate.  In the examples, ethylene either alone or together with isobutylene is heated under pressure in contact with an aqueous emulsion of benzoyl peroxide.  Specifications 471,590, 497,643 and 8070/40 (as open to inspection under Sect. 91) are referred to. According to the Provisional Specification, the process of polymerizing or interpolymerizing in contact with an aqueous emulsion of an organic per - compound is applied to low molecular weight olefines in general, e.g. propolyene.
Patent GB-976749-A (GB)
Title: Aqueous dispersions of vinyl chloride-acrylic ester copolymers
Inventor: PERRONIN JEAN
IPC: C08F214/06
Filed: 1961-02-23
Abstract: Vinyl chloride-acrylic ester copolymers are prepared by copolymerizing vinyl chloride and acrylic ester in the presence of water and a mixture of surface-active agents comprising (a) an alkyl sulphate, or alkyl sulphonate, an alkylarylsulphonate or a dialkyl sulphosuccinate and (b) a non-sulphated, non-sulphonated condensate of an alcohol with ethylene oxide, the catalyst being a redox system. Sodium or ammonium lauryl sulphate, sodium alkyl sulphonates, sodium alkylaryl sulphonates and sodium dialkylsuccinates are specified surface-active agents. Redox systems specified are persulphates, perborates, perchlorates and hydrogen peroxide as oxidants and sulphites, bisulphites, hydrosulphites, ferrous salts and phenols as reducing agents and possibly a sequestering agent, e.g. a pyrophosphate, a hexametaphosphate or sodium ethylenediamine-tetra-acetate.  The dispersions may be used in the textile paint or leather industry.
Patent GB-501419-A (GB)
Title: Improvements in or relating to bobbins for textile machinery
IPC: B65H75/18
Filed: 1937-08-27
Abstract: 501,419. Bobbins ; rollers. ROBINSON, J. E. Aug. 27, 1937, No. 6658/38. Divided out of 482,371. [Classes 120 (iii) and 142 (ii) [Also in Group VIII] The metal tubular body o a textile bobbin is provided with a non-tubular internal re inforcement having a number of surfaces which engage the interior of the body at angu larly spaced positions and ex tend longitudinally thereof. As shown, the reinforcement is a single cruciform member 2, the free edges of the longitudinal ribs thereof engaging the interior of the body 1. The cruciform member may be made by securing a pair of metal angle bars together by welding and an additional reinforcement may be provided by forming the walls of the body with longitudinal corrugations.
Patent GB-1209373-A (GB)
Title: Improvements in or relating to cultivating implements
IPC: A23L27/30
Filed: 1968-02-09
Abstract: 1,209,373. Rotary cultivators. C. VAN DER LELY N.V. 9 Feb., 1968 [23 Feb., 1967], No. 6669/68. Heading A1B. A cultivating implement consists of a horizontal main frame 1, a soil working rotor 4, 5, 6 mounted in cheek plates 2, 3 of frame 1 and a screening baffle, a portion 8, Fig. 2, or 55, Fig. 5, of which is attached to the cheek plates in such a way that the whole of the portion 8 or 55 is capable of deflecting away from the rotor 4, 5, 6. In a modification shown in Fig. 3 the baffle 52 is made from spring rods 46 and has an edge region immovably connected to the cheek plates 2, 3 and portions 49, 51 which are capable of yielding. As shown in Fig. 2, the upper portion 8 of the screening baffle pivotally connected at its ends to cheek plates 2, 3 by arms 14, 18 moves vertically upwards pivoting about pins 13, 15, 17, 19. As shown in Fig. 3 bent spring steel rods 46 are clamped at one end to bar 45 and at the other ends 51 form a sieve-like section. As shown in Fig. 5 section 55 attached to cheek plates 2, 3 by arm 56 and pin 57 moves vertically upwards against helical compression springs 60 pivoting about pin 57.
Patent GB-287553-A (GB)
Title: Improvements relating to the spinning of artificial threads
IPC: D02J1/22
Filed: 1928-03-03
Abstract: 287,553. I. G. Farbenindustrie Akt.- Ges. March 24, 1927, [Convention date]. Thread guides; tension arrangements. - The reciprocating thread guide of an artificial silk spinning apparatus is associated with one or more rods or prongs rigidly connected to the guide and arranged so as to tension the thread, for which purpose the rods are arranged so as to cause the thread to make one or more changes in direction during passage therethrough. Thus, the usual guide-eye a, Fig. 2 may be associated with a number of rods b of polygonal, circular or other cross-section, and situated either in one plane or different planes; and as shown in Fig. 5, there may be used seven rods b, these being removably mounted in the holder c so that by removing one or more of the rods the tension may be controlled. Or the guide-eye a, Fig. 8 may be placed between the arms e, e<1>of the fork over one or the other arms of which the thread is passed to that winding bobbin on which the thread is being wound, the thead in this form passing first through the guide-eye. The ends of the rods may be bent laterally or downwards in order to facilitate draining of the acid stripped from the threads. The Specification as open to inspection under Sect. 91 (3) (a) refers to two other constructions. The first comprises a saddle d, Fig. 9 (cancelled), provided with projections f through which the thread is led, eventually leaving by one or other of the grooves e<3>, e<4>; in this construction, the projections may be removable for the purpose of controlling the tension. In the second, the thread is passed over a fork k, Figs. 10, 11 (cancelled), the amount of tension in this case being determined by the position of the fork, for example, it may be placed in the alternate positions indicated in these figures. This subjectmatter does not appear in the Specification as accepted.
Patent GB-549609-A (GB)
Title: Improvements in sleeve-valve internal-combustion engines
IPC: F01L5/06
Filed: 1941-05-26
Abstract: 549,609. Valves. BRISTOL AEROPLANE CO., Ltd., OWNER, F. M., and UNDERWOOD, H. T. May 26, 1941, No. 6748. [Class 7 (vi)] Oil and other accumulations are discharged from the sleeve-valve pocket 12 through a passage 19 formed in the inside of the cylinder wall and terminating at 21 below the cylinder head 14, so that when the valve is moving into the pocket, the oil &c. is driven out through the passage 19 and sleeve exhaust port 17 into the combustion chamber. A second passage 23 may be provided, connected to the cylinder exhaust port 16 so that oil &c. is discharged therethrough into the exhaust.
Patent GB-507553-A (GB)
Title: A reagent to flocculate coal slurry water in coal washeries
IPC: B03D3/06
Filed: 1939-03-02
Abstract: 507,553. Purifying water. WILSON, W. March 2, 1939, No. 6782. [Class 46] A reagent containing ulmus fulva is used for flocculating coal slurry water. A suitable reagent is obtained by mixing ulmus fulva, borax, glycerine and potato starch with 'boiling water.
Patent GB-525849-A (GB)
Title: Improvements in or relating to gear cases for bicycles
IPC: B62J13/04
Filed: 1939-03-02
Abstract: 525,849. Cycle gear-cases. BIRMINGHAM SMALL ARMS CO., Ltd., and SPECK, T. R. March 2,1939. No. 6789. [Class 136 (i)] Means for detachably securing a gear-case to a cycle frame comprises a lug or abutment 3 secured to the back of the gear case and shaped to engage the down tube 4 in conjunction with a clip plate 5 fixed by screws &c. 6, a reinforcement plate 11 being also fitted to the gear case and arranged to engage the front end of the chain stay tube 8, in conjunction with a clip plate 12. As shown in Fig. 3, the plate 11 is attached by screws 10 to bosses 9 on the gear case.
Patent GB-288568-A (GB)
Title: Improvements in siphons
IPC: B67D1/04
Filed: 1928-03-05
Abstract: 288,568. Krupp Akt.-Ges., F. April 12, 1927. [Convention date]. Void [Published under Sect. 91 of the Acts]. Siphon bottles.-A siphon for liquids under a comparatively high pressure has an ascension pipe with a reduction on its lower portion and a lifting valve with a hemispherically-shaped valve body. The reduction may be obtained by a cap F<1> with a small bore f<1> screwed on to the tube E<1>. The hemispherical portion c<1> of the valve c rests on a valve seat D made of elastic material. The body A may be of rust-proof steel.
Patent GB-164476-A (GB)
Title: Improvements in and relating to cameras for use in colour photography
IPC: G03B33/00
Filed: 1920-03-06
Abstract: 164,476. Trist, A. R. March 6, 1920. Colour photography. - In cameras for colour photography in which three plates may be exposed in turn through colour filters and in which no reflectors are used, means are provided for adjusting the effective aperture of the filters so that the actual exposure time period may be the same. In the construction illustrated, the filters h, l, d, Fig. 1, are mounted on a disc a and brought in turn in front of the objective, and the film or plate may be changed automatically with the movement of the disc. The disc a also contains a clear aperture c. The taking-lens is provided with a separate diaphragm o. The filters are fitted with iris diaphragms i, m, e adjusted by pointers j, n, f which indicate on scales k, x, g, the actual diameter of the apertures. The relative filter apertures depend upon the lens aperture used and the plates, and may be given by tables such as illustrated in Fig. 2, in which the various lens stops are indicated by the figures t the plate particulars by figures u and the corresponding filter apertures by the figures q, r, s.
Patent GB-230274-A (GB)
Title: Improvements in variable electric condensers
IPC: H01G5/38
Filed: 1924-03-18
Abstract: 230,274. Wilkins & Wright, Ltd., and Hewitt, J. H. March 18, 1924. Condensers.-In a variable condenser having two sets of independently - operated movable vanes for coarse and fine adjustment respectively, a pair of spring arms are provided, each bearing on one set of plates for retaining them in adjusted position. The fixed vanes 3 are assembled with spacing washers on pillars 2 uniting metal end plates 1, and the main set of moving plates are mounted on a spindle 6 operated by a knob 20 and adjusted axially by a screw 11 provided on the lower end plate. One or more moving vanes 13 for giving fine adjustment are secured to a sleeve surrounding the spindle 6 and adapted to be rotated by a lever 18. Both sets of moving vanes are accommodated between the end plates 1, and the upper plate serves as a fixed vane co-operating with the moving vanes 13. The spring arms for retaining the moving vanes in adjusted position are formed from a single phosphor-bronze strip 7 bent at 9 as shown, and provided with a lug 14 serving as a stop co-operating with stops 15 provided on one of the spacing washers on the spindle 6. Specification 214,363 is referred to.
Patent GB-458637-A (GB)
Title: Improvements in and relating to the manufacture of artificial leather and the like
IPC: D06N3/00
Filed: 1936-03-07
Abstract: 458,637. Coated fabrics; compound fabrics. ATLAS AGO CHEMISCHE FABRIK AKT.-GES., M÷lkau, near Leipsic, Germany. March 7, 1936, No. 6943. Convention date, March 7,1935. [Class 140] In making artificial leather by a process in which a coating of lacquer or varnish is applied by transfer from an auxiliary support, a web of fabric or paper is first coated with a smooth glossy layer of, for example, gelatine, which is then coated with varnish or lacquer, the fabric &c. is then superimposed on the artificial leather with the interposition of an adhesive or solvent and pressed, for example between resilient rollers to unite the varnish or lacquer coating to the surface and after complete drying the auxiliary support is separated, leaving a highly polished surface coating on the artificial leather. The auxiliary web is preferably made as described in Specification 439,460. The product may be used in the fancy goods and automobile industries or as a substitute for oilcloth.
Patent GB-1129466-A (GB)
Title: Polyamides
IPC: C08G69/26
Filed: 1966-02-17
Abstract: 1,129,466. Aromatic polyamides. EASTMAN KODAK CO. 17 Feb., 1966 [17 Feb., 1965], No. 6950/66. Heading C3R. The invention comprises linear polyamides having recurring units of formula in at least 60% of which R is a radical derived by removing the carboxyl groups from naphthalene-1,3-, 1,4-, 1,5-, 1,6-, 1,7-, 2,6- or 2,7- dicarboxylic acid and in at least 60% of which A is a radical derived by removing the terminal amino groups from a diamine of formula where R<SP>1</SP> is a C 4-8  linear alkylene radical, R<SP>2</SP> is H, Me or Et, R 3  is Me or Et and n=1 or 2. They may be prepared by polycondensing the corresponding dicarboxylic acids and diamines. The dicarboxylic acid may, however, be replaced by chloride or by a lower alkyl or phenyl ester. Diamines specified include 2,2- dimethylpentane - 1,5 - diamine, 2,5 - dimethylhexamethylene diamine, 3-methylheptamethylene diamine, 4-methyloctamethylene diamine, 2 - methylbutane - 1,4 - diamine, 2 - methylpentamethylene diamine, 3-ethyl-hexamethylene diamine, 2 - methylhexane - 1,6 - diamine and 2,2,4 - and 2,4,4 - trimethylhexane - 1,6 - diamine. Other dicarboxylic acids and diamines which may be present include isophthalic acid and aliphatic linear and cycloaliphatic diamines, e.g. 1,4-bis (aminomethyl) cyclohexane. The reaction may be carried out initially in the presence of water or aqueous ethanol to form the acid/amine salt and then under an inert atmosphere of reduced pressure. Where the m.p. of the product is above 280‹ C. the salt may be partially polymerized, the intermediate product allowed to set and ground up and the particles heated below their cohesion temperature to complete polymerization. The products may be made into films and fibres.
Patent GB-781207-A (GB)
Title: Process and apparatus for preparing alkali metal silicate solutions
IPC: C01B33/32
Filed: 1955-03-09
Abstract: <PICT:0781207/III/1> Clear aqueous solutions of alkali metal silicates are obtained by introducing thin rigid fragments of the warm silicate into a slowly-rotating horizontal dissolver maintained at atmospheric pressure whilst passing in water at a controlled rate into the dissolver in contact with the silicate fragments, the latent heat of solution of the silicate being sufficient to maintain the temperature of the resulting solution uniformly near but below its boiling point, the solution being thereafter withdrawn.  As shown in the drawing, Fig. 1, alkali metal silicate is discharged at 2600 DEG F. from a silicate furnace 2 on to a rotating cooled roller 3 from which a thin ribbon 6 of silicate passes on to the cooled conveyer 7. Here the silicate cools sufficient to form a rigid strip having a warm interior and cool outer surface before passage below a breaker 8 which shatters the silicate glass into fragment 9.  The fragments generally with an area of 1 to 3 square inches pass to a hopper 11 and along a second conveyer 12 to a dissolver 13.  The dissolver is fed with water through line 28 and is provided internally with feed flights near the silicate inlet end thereof to forward the silicate into the dissolver, and also with lifting flights throughout the remainder of its length to gently agitate the mixture of silicate and water.  A final section 29 forms a quiescent zone and not provided with lifting flights and the final silicate solution overflows through an opening 23.
Patent GB-681294-A (GB)
Title: Noise limiting circuit, particularly for television receivers
Inventor: COPE JOHN EDWARD
IPC: H04N5/21
Filed: 1950-03-21
Abstract: 681,294. Valve limiting circuits. PYE, Ltd. March 19, 1951 [March 21, 1950], No. 7000/50. Class 40 (vi). A noise-limiting circuit for a television receiver is effective at both the R.F. and video frequencies. Modulated carrier is rectified by diode 1 and fed over a filter to video amplifier 8. A limiting diode 3, biased from potential divider 4, 5 to conduct on peak white signals, is provided with R.F. choke 7 and coupling capacitor 6 so that when diode 3 conducts, R.F. signals pass through both diodes and no rectification occurs.
Patent GB-349647-A (GB)
Title: Improvements in and relating to axle-bearings for rail vehicles
IPC: B61F17/20
Filed: 1930-03-03
Abstract: 349,647. Lubricating axle bearings. MATTHEWS, E. F., Elm Cottage, Watford Road, Wembley, Middlesex. March 3, 1930, No. 7013. [Class 12 (iii).] A lubricating ring 1 for an axle-box rests on the front collar 7 of the brass 8 and is maintained in that eccentric position by the action of its own weight or of a lug 28 projecting from the top of the box while being rotated positively from the axle 4 by means arranged on the front face of the latter. Pins 19, 20 projecting from a disc 11 connected to the ring 1 by spokes 10 tapering in the direction of rotation engage radial slots 21, 22 in a disc 12, and studs 13, 14 mounted in the end of the axle engage slots 17, 18 in the disc 12 and circular apertures 23, 24 in the disc 11, the slots 17, 18 being at rightangles to the slots 21, 22 and the diameter of the apertures 23, 24 being equal to the length of the slots 17, 18. A rib 29 on the collar 7 scrapes oil from the inside of the ring into recesses 30, 31, whence it flows to lubricating grooves 3, and at high speeds the lug 28 scrapes oil from the outside of the ring.