baber/WOPTO huggingface dataset:
Patent GB-629428-A (GB)
Title: Improvements in camera mechanisms and the like
IPC: G03B19/18
Filed: 1947-08-21
Abstract: 629,428. Operating clutches. HOBBS, H. W Aug. 21, 1947, Nos. 23146 and 23882. [Class 80 (ii)] A clutch device in a camera mechanism for clutching the film driving sprocket w to the driving motor q utilises an inertia device to assist the motor when the clutch is engaged. A sliding clutch sleeve g is in splined engagement with a pulley k driven from the motor q and has clutch teeth at one end adapted to engage with corresponding teeth l on the sprocket w. This sleeve has secured to it an outer sleeve h with clutch teeth adapted to engage teeth m on a flywheel z. This flywheel is driven through a countershaft e at a greater speed than the sleeve g so that when it is clutched thereto at the same time as the sleeve is clutched to the sprocket w it transfers its kinetic energy to the sleeve to assist the motor q to bring the sprocket up to its required speed. A friction clutch dl in the drive to the flywheel will then slip. When not being driven the sprocket w. is held by a pivoted latch u engaging teeth x on the sprocket which is lifted on the sliding movement of the sleeve g to engage the clutch teeth e. A friction disc f is also driven from the countershaft e to act as a brake on the motor when the clutch is not engaged to compensate for the power not required in driving the film sprocket. The flywheel 3 may be driven in any other convenient manner and may comprise the rotor of an induction motor, the stator of which is provided with a switch device to break the electrical circuit when the clutches are engaged.
Patent GB-647377-A (GB)
Title: Improvements relating to electrical devices
Inventor: LEVERS JAMES FREDERICK
IPC: H05B3/34
Filed: 1948-09-02
Abstract: 647,377. Woven electric resistance. BRITISH CELANESE, Ltd. Sept. 2, 1948, No. 23155. Addition to 623,641. [Classes 142(ii) and 142(iv)] [Also in Group XXXVI] An electrical resistance comprises a woven ribbon 13, the warp 3 being of insulating material and the weft 5 being of resistance wire, a loop 18 being formed at predetermined intervals to define a section of predetermined resistance. Preferably two such loops are formed adjacent to each other, the ribbon being divided between the loops which form connecting leads. The ribbon may be coated as disclosed in Specification 590,290 and used as a strain gauge. The wire is preferably insulated by two lappings of yarn, lapped in opposite directions; the inner lapping may be of cellulose acetate yarn and the outer lapping of silk. The warp may be an artificial continuous filament stretched in the presence of moist steam and saponified to obtain a high tensile strength.
Patent GB-301547-A (GB)
Title: Improvements in or relating to refractory building material
IPC: C04B35/16
Filed: 1927-09-03
Abstract: 301,547. Knudsen, G., Goldschmidt, V. M., and Knudsen, R. Sept. 3, 1927. Addition to 260,298. Refractory substances; stone, artificial.- Building material resistant to high temperatures and chemical action is made by submitting powdered or granular olivine rock to treatment in which a recrystallization takes place to cement the grains together. The powdered or granular mass is heated to a temperature below the melting point, preferably in the presence of small quantities of substances assisting the recrystallization such as silicates, borates, chlorides, nitrates and phosphates of alkaline metals, nitrates, borates, chlorides and phosphates of tin, manganese, iron and alkaline earths, and silicates, phosphates and borates of tri- and tetravalent metals. Crystallization-assisting agents may also be formed in the mass by the use of acids. Small quantities of binders or of substances adapted to increase the plasticity may also be added, for instance substances adapted to form synthetic magnesium orthosilicate such as serpentine, talc or enstatite mixed with magnesium oxide &c. In an example, granular olivine is mixed with 2-5 per cent of sodium silicate solution and the mass after moulding is heated for ten hours to a temperature of about 1000‹ C. In another example, granular olivine is treated with dilute acid to form small quantities of magnesium nitrate and the mass is heated for twenty hours to 600‹ C. and for one hour to 1000‹ C. Olivine containing considerable quantities of hydrated magnesium silicates such as talc or serpentine may be used, in which case substances rich in magnesium such as magnesium oxide are preferably added. Aluminium compounds such as clay, kaolin, and bauxite, iron compounds and compounds of tri- and tetravalent elements of high atomic weight such as titanium, chromium, manganese, vanadium, zirconium, yttrium, lanthanium, and cerium may be added. Specifications 283,791 and 284,576 are referred to.
Patent GB-672275-A (GB)
Title: Improvements in or relating to the manufacture of tools
Inventor: SAMUEL ROBERT LIONEL
IPC: C23C10/42
Filed: 1949-09-07
Abstract: Ferrous tools are heated in a closed reaction vessel in a solid which contains a halide of a carbide-forming metal or which is capable of giving rise to such a halide on heating, such halide being present or being formed in a proportion not exceeding 0.2 per cent of the solid. The halide is preferably an iodide, the carbide-forming metal may be chromium, molybdenum or tungsten and heating may be effected at 750 DEG -1100 DEG C.  The vessel may be sealed as described in Specification 646,638.  In examples, mixtures of ferro-chromium, kaolin and potassium iodide and urea are used. Alumina or magnesia or mixtures thereof, with or without kaolin, may also form part of the solid.
Patent GB-533369-A (GB)
Title: Improvements in or relating to laminated wooden articles
IPC: F24H3/04
Filed: 1939-08-11
Abstract: 533,369. Plywood. JABLONSKY, B. Aug. 11, 1939, No. 23241. [Class 145 (ii)] A laminated material for use on aircraft &c. comprises laminae of wood, one or more of the laminae being perforated and the perforations being arranged so that the material as a whole is imperforate. The material may be formed of plywood which has been compressed to increase its density. The outer lamina may have an indented surface formed by placing reticulated material against the surface during the compression process. A fabric layer may be included as a reinforcement. Specifications 493,145, [Group XXXIII], 502,826 and 519,061 are referred to.
Patent GB-388063-A (GB)
Title: Improvements in or relating to supports for lamp shades and the like
IPC: F21V17/00
Filed: 1931-08-18
Abstract: 388,063. Shade &c. holders. IMBER, J., Aladdin Building, Greenford, Middlesex. -(Mantle Lamp Co. ; 609, West Lake Street, Chicago, U.S.A.) Aug. 18, 1931, No. 23262. [Class 75 (ii).] A support for lampshades and the like comprises a plurality of arms a adapted to be detachably mounted in a supporting element and held in operative position therein by mounting the element over a lamp burner or other central support. The inner ends of the arms a are bent at d to conform to the curvature of a ring b of channel section provided with apertures e in the outer wall through which the radial portions of the arms project. The ring is adapted to be frictionally mounted around a burner f, a flange g of which extends beneath the open underside of the ring to maintain the arms in position.
Patent GB-797543-A (GB)
Title: Improvements in or relating to alkaline earth metal silicates
IPC: C01B33/24
Filed: 1955-08-12
Abstract: Finely-divided alkaline-earth metal silicate, particularly calcium, preponderantly in the form of fine non-crystalline flakes ranging up to at least ten microns across a long dimension with a thickness ranging from about 100 <\>r. to 800 <\>r. and having a ratio of alkaline earth metal oxide to silicon dioxide between 1 and 5, is prepared by reacting an aqueous solution of <PICT:0797543/III/1> an alkaline earth metal salt with an aqueous solution of an alkali metal silicate while subjecting the reactants to an intense agitation and correlating the concentration of the alkali metal silicate reactant and the final concentration of the un-reacted alkaline earth metal salt in the reaction product mixture to agree stoichiometrically with the respective concentration of alkaline metal silicate and calcium chloride within the area to the right of the curve AB of the Figure, particularly to the right of curve CD of the Figure.  This is to maintain the concentration of unreacted alkaline earth metal salt in the reactant/product mixture.  Reference has been directed by the Comptroller to Specification 743,930.ALSO:<PICT:0797543/IV (a)/1> Finely-divided alkaline earth metal silicate, particularly calcium, preponderantly in the form of fine non-crystalline flakes ranging up to at least ten microns across a long dimension with a thickness ranging from about 100  . to 800  . and having a ratio of alkaline earth metal oxide silicon dioxide between 1 and 5 is particularly suitable as a rubber pigment particularly for the synthetic rubber such as butadiene, butadiene-styrene copolymers known as GR-S rubber, i.e. 10 to 60 per cent by weight of styrene and 90 to 40 per cent by weight of butadiene; butadiene-acrylonitrile copolymers of 40 to 90 per cent butadiene and 60 to 10 per cent of acrylonitrile; neoprene rubber; isobutylene polymers and copolymers of isobutylene with 0.01 to 4.0 per cent of isoprene (based upon the weight of isobutylene) or other elastomers prepared by polymerization of butadiene-1,3-1,3, isoprene, piperylene, 2,3-dimethyl butadiene or 2-chlorobutadiene-1,3 alone or in admixture with one or more organic, monomeric or ethylenic compounds including acrylonitrile, isobutylene, vinyl chloride, vinyl acetate, styrene, methyl methacrylate, methyl alphachloroacrylate and methyl acrylate. Other silicates such as magnesium, barium or strontium may be used in lieu of all or part of the calcium salt.  Reference has been directed by the Comptroller to Specification 743,930.
Patent GB-839290-A (GB)
Title: An improved method of producing synthetic detergent cakes
IPC: C11D13/14
Filed: 1958-07-21
Abstract: Detergent tablets are made by (a) forming a molten mixture comprising a water-insoluble wax, such as carnauba, candelilla, or petroleum wax, beeswax or glycol stearate wax, and a normally solid synthetic detergent, especially sodium alkylbenzene sulphonate, the mixture suitably containing 50-100 parts by weight of wax per 100 parts of detergent; (b) flowing the mixture into a mould 13 having collapsible sides and a plurality (16a, 16b, 16c) of flexible pallets, suitably of neoprene rubber, in the bottom; (c) solidifying the mixture within the mould, for example by cooling; (d) cutting the moulded mass into separate sections along the junction lines between the flexible pallets (by means of knives 17, 20, 22), preferably cutting only part of the way through so as to form cakes joined at the bottom adjacent to the pallet; (e) separating the cut sections (19a, 19b, 19c) on the pallets; (f) collapsing the sides of the mould; and (g) after further cooling, inverting the solidified sections with the pallets still attached thereto and stripping the pallets from the solidified sections, suitably by a rolling-stripping action involving the flexing <PICT:0839290/III/1> of the pallets.  The sections are then suitably further divided along the lines of partial severance before packaging.  If desired, step (f) above, may be transposed to follow step (c), before cutting the mass, step (d).  Fatty acid, bithionol - (2 : 21 - thio - bis - [4 : 6 - dichlorophenol]), chlorophyll, perfume, and lanolin may be incorporated in the composition in small amounts.
Patent GB-1312016-A (GB)
Title: Vein stripping instrument
IPC: A61B17/00
Filed: 1971-04-19
Abstract: 1312016 Varicer bougie CODMAN & SHURTLEFF Inc 19 April 1971 [19 Feb 1970] 23452/71 Heading A5R [Also in Division B5] A varicer bougie 10 comprises a cable 11 formed from a monofilament of synthetic thermoplastic material whose molecules are axially oriented and which has a uniform cross section throughout its length, a tubular plastics cap ultrasonically welded over at least one end of the cable by bringing an ultrasonic welding horn into contact with the cap, the outermost end of the cap being smoothly rounded to permit free passage of the cable through a vein. Caps 12 and 13 are welded over either end of the cable and in use the cable is threaded through the vein and a bullet shaped tip 25 is attached to the forward cap 13 by passing the cable 11 through a transverse slot 28 in the tip 25 until it is within a central bore (26) and then pulling the cable until the cap 13 is within the bore 26 with its shoulder 17 abutting an internal shoulder 27 of the bore. A handle 18 with a central bore 20 having a shoulder 23 and a transverse slot 21 is attached to the cap 12 at the other end of the cable in a similar manner and is used for pulling the cable whereby the vein is stripped from the patient by the tip 25. The caps 12 and 13 are attached to the cable by placing them over the ends of the cable and encapsulating them between a support member and a vibration horn (33) Figure 6 (not shown) suitably contoured to receive the cap. A generator (30) conducts electrical energy through conductors (31) to a converter (32) which produces ultrasonic mechanical vibrations and transfers them to the horn (33). A clamp (37') prevents the cable from oscillating longitudinally during the welding operation. The melting points of the plastics material for the caps and the thermoplastic cable must be approximately the same. Nylon may be used in both cases. The vibrations are controlled so that only the outer surface of the cable is welded, in order that the orientation of the molecules of the cable is maintained.
Patent GB-316621-A (GB)
Title: Plant and machines for the manufacture of small round loaves
IPC: A21C11/02
Filed: 1929-07-30
Abstract: 316,621. Soc. Anon. des Etablissements E. Lidon. Aug. 1, 1928, [Convention date]. Dough-working machines; rolling.-A plant for making small loaves comprises a rounding machine wherein the pieces of dough from a divider are shaped into balls, and a deliveryapparatus delivering the balls at definite intervals to a finishing machine wherein they are oiled and marked. As shown, portions of dough are delivered from a divider on to an upwardly-moving belt 4, Fig. 1, and are shaped into balls beneath a moulding-trough 8; the balls are delivered through a shoot 34 and are aggregated into rows on a transverse belt 38, each row being then fed forward on a belt 52 to the oiling and marking devices. The trough 8 is narrower and deeper at the rear end and is adjustably carried by brackets 29, Fig. 3, upon ball-bearing crank pins 27 depending from discs 18 adjustably secured to shafts 9 one of which is driven through a belt 10 and drives the other through crank pins 25 and a rod 26. A rotary timing-member 35, Fig. 4, delivers the balls of dough p on to the belt 38 to form a row which is then delivered through openings 51 to the belt 52 by one of a set of radial blades 48 mounted on a shaft 49 which is intermittingly rotated by an arm 57 engaging a pin-wheel 58. A longitudinal shaft 42 drives through chain gear 43 the belt 38 which, in turn drives the arm 57 through bevel gear 54 and a shaft 56 and the member 35 through chain gear 45. At the end of the belt 52 the balls of dough pass beneath a brush 79, Fig. 9, fed with oil from a receptacle 84 and then beneath marking or pressing devices carried by a reciprocating head 87. The belt is driven intermittingly through ratchet gear 74 by a link 72 and crank pin 71 which also operates the head S7 through links 88. 91 and levers 89, 89<1>. The belt may be driven continuously, mark. ing being effected by rotary devices.
Patent GB-461965-A (GB)
Title: Improvements in the manufacture and production of azo dyestuffs
IPC: C09B29/32
Filed: 1935-08-22
Abstract: Azo dyes are made by coupling 5 : 6-dihydro-1 : 3 - dihydroxybenzene (cyclohexane - 1 : 3-dione) or its derivatives with diazo compounds of amines containing nitro groups but containing no carboxylic, carboxylic ester, hydroxy, alkoxy or O-acyl group in o-position to amino groups.  The insoluble dyes are suitable for acetate artificial silk, cellulose ester and ether lacquers or artificial compositions, e.g. polymerized vinyl compounds and urea-formaldehyde or phenol-formaldehyde resins. The dyes containing sulphonic groups are suitable for wool, paper, silk or viscose artificial silk.  They are also capable in some cases of use as lake dyestuffs.  Yellow shades are obtained.  In the examples, dyes from the following components are described: diazo components; o-nitroaniline, 4-chloro-2-nitroaniline, 5-nitro-2-toluidine, 1-methyl-3-nitro-4-aminobenzene, 2 : 4 - dinitroaniline, 4 - nitroaniline - 2 - sulphonic acid; coupling components: 5 : 6-dihydro-1 : 3-dihydroxybenzene, 5 : 5-dimethylcyclohexane - 1 : 3 - dione, 4 - phenyl - 4 - ethylcyclohexane - 1 : 3 - dione, 5 - phenyl - 4 - cyanocyclohexane-1 : 3-dione, 5-phenylcyclohexane-1 : 3-dione-4 carboxylic acid ethyl ester.  A sample has been furnished under Sect. 2 (5) of the dyestuff o-nitroaniline --> 4-o -phenylethyl cyclohexane-1 : 3-dione (colours nitrocellulose ester lacquers yellow).  Cyclohexane-1 : 3-diones or 5 : 6-dihydro-1 : 3-dioxybenzenes are made by catalytic hydrogenation of the corresponding 1 : 3-dioxybenzenes in the presence of basic substances.  5 : 5-Dimethylcyclohexane-1 : 3-dione is made by condensing mesityl oxide with malonic diethylester in presence of sodium ethylate, saponifying the 5 : 5 - dimethylcyclohexane - 1 : 3 - dione - 4 - carboxylic acid ethyl ester and splitting off carbon dioxide. 4-o -Phenylethylcyclohexane-1 : 3-dione is made by condensing resorcinol with phenyl acetic chloride in nitrobenzene solution in presence of aluminium chloride, reducing the 4-o -phenylacetyl-1 : 3-dioxybenzene formed in hydrochloric acid with amalgamated zinc and hydrogenating the 4-o -phenylethyl-1 : 3-dioxybenzene. 5-Phenyl-4-cyanocyclohexane-1 : 3-dione is made by condensing benzylidene acetone with cyanoacetic ethyl ester in presence of sodium ethylate.
Patent GB-719531-A (GB)
Title: Improvements in or relating to apparatus for detecting shock waves
Inventor: TUCK JAMES LESLIE
IPC: G01L21/30
Filed: 1945-09-12
Abstract: 719,531. Indicating vibrations. LORD. PRESIDENT OF THE COUNCIL. Sept. 12, 1943, No. 23573/45. Class 106 (4). [Also in Group Means responsive to the arrival of a shock wave in a gas, or of a detonation wave in a solid explosive, comprises a pair of spaced electrodes between which is maintained a potential difference sufficient to cause current to flow in the circuit of the electrodes when the path between them is rendered conductive by the ionized gases in the wave front. In the embodiment shown, an explosion started by a detonator 14 and travel:ing along a fuse cord 11--releases ionized gases which render conducting the path between electrodes 12, causing, by means of a thyratron circuit 7, the discharge of condensers 2, 3 through an X-ray tube 1 arranged to photograph the explosion of a charge 9 fired by a detonator 10, from the fuse cord 11. The distance between the electrodes 12 and the charge 9 is arranged so that the X-ray flash occurs at the desired instant relative to the explosion of the charge, allowance being made for the time constants of the electric circuits. The current between the electrodes may actuate other kinds of recorder, or may control a radio transmitter. A second pair of electrodes may be arranged beyond the first pair. The distance travelled by another explosion wave of known velocity in a solid explosion while the first wave passes from the first to the second pair of electrodes may be determined photographically and the speed of the first wave thus ascertained.
Patent GB-606176-A (GB)
Title: Variable area propelling nozzle for an aircraft jet propulsion system
IPC: F02K1/16
Filed: 1944-11-27
Abstract: 606,176. Jet propulsion nozzles. POWER JETS (RESEARCH & DEVELOPMENT), Ltd., JOHNSTONE, A. P., and COHEN, H. Nov. 27, 1944, No. 23657. [Class 110 (iii)] An elastic fluid propelling jet has two caliperlike plates 4 on the nozzle, adjustment of which reduces the nozzle area. The control linkage 8B can be operated by hand lever 14 and is also connected with the supply pipe 12 to the burner nozzle 10 so that when fuel is supplied to this nozzle the jet area is maintained at its maximum. The caliper plates can be separately adjusted to give an inclined line of thrust.
Patent GB-221958-A (GB)
Title: Improvements in folding or tip-up seats
IPC: A47C7/56
Filed: 1923-09-22
Abstract: 221,958. Sleigh, H. L., and Cheston, A. S. Sept. 22, 1923. Folding seats; fixing furniture to floors.-A tipup folding seat, pivoted between arms 2 supported by legs 4, 5, is held in its in-use and outof-use positions by the engagement of projections and recesses on the seat and arms, such engagement being automatic by reason of the spring construction of the arms. Projections 16 on the arms 2 are adapted to engage slots 15 in socket members 11 on the seat 1, the arms 2 being pressed outwardly as the seat is turned. The pivoted back 17 may be provided with a strut 19, slotted at 20, so that it may be moved forward, to a limited extent, into a vertical position, when the seat is folded. The legs 4, 5 are shown diverging from a central boss 6 with a tapered portion 7 engaging a floor socket 8.
Patent GB-1041913-A (GB)
Title: Method of regulating an oven for thawing frozen foods and devices for such regulation
IPC: H05B1/02
Filed: 1964-06-09
Abstract: 1,041,913. Thawing food. ELECTROLUX A.B. June 9, 1964 [June 13, 1963], No. 23833/64. Heading A2D. A method of thawing and preparing frozen food comprises preheating the oven by circulating air, to a temperature higher than when the food is inserted such that the heat fed to and stored in the oven corresponds to the quantity of heat required to raise the temperature of the frozen food to 0C. The oven has different air paths, the quantities of air in all paths being the same. The temperature of the circulating air is controlled by thermostats, one for the preheating stage and one for the thawing stage. The thermostats are connected in parallel in an electric circuit. The temperature of the circulating air may be 50C. higher for the preheating stage than for the thawing stage.
Patent GB-262391-A (GB)
Title: Improvements in horns for sound reproducing and like instruments
Filed: 1926-09-28
Abstract: 262,391. K³chenmeister, H. J. Dec. 1, 1925, [Convention date]. Addition to 259,207. Sound magnifying and directing appliances. - Two (or more) soundconduits b<1>, b<2> are provided with slides c, d<1> of the kind described in the parent Specification having different absorbing properties, due to the use of different materials or different thicknesses of the same material. The operating handle f<1> of one slide mav be tubular to accommodate the handle e' of the other, so that the slides may be controlled together or separately. They may also be controlled from a distance by means of cables or electromagnetically.