baber/WOPTO huggingface dataset:
Patent GB-629649-A (GB)
Title: Improvements in preparation of materials having vitamin e activity
IPC: C07D311/72
Filed: 1946-04-18
Abstract: Gamma tocopherol, or a concentrated solution thereof, is treated by methods known to be capable of introducing an alkyl, an aryl or an aralkyl group into a benzene nucleus containing a hydroxyl group, the vitamin E activity being thus increased.  The invention is particularly directed to the introduction of a methyl group in the 5 position in the nucleus of gamma tocopherol so as to convert it into alpha tocopherol.  Halogen alkyl groups which, after introduction may be reduced to the corresponding alkyl group, include the chloromethyl group which is introduced by reacting gamma tocopherol with chloromethyl ether or with a 40 per cent aqueous solution of formaldehyde, paraformaldehyde or dimethylformal in the presence of hydrogen chloride, hydrogen bromide or hydrogen iodide; paraldehyde or diethyl formal or propionaldehyde may replace formaldehyde to provide the corresponding halogen alkyl group.  In an example, to 3.3 gms. of a tocopherol concentrate prepared by molecular distillation of soya bean oil, dissolved in 75 ccs. ether was added 0.4 gms. of paraformaldehyde and 0.4 gms. of zinc chloride.  Hydrogen chloride gas was passed into the suspension for 15 minutes at room temperature and the mixture allowed to stand overnight when it was washed with water, dried and evaporated to give an oil which was reduced with zinc-mercury amalgam and concentrated hydrochloric acid in ethanol. In other examples, ethereal solutions of gamma tocopherol, or gamma tocopherol concentrate, are treated (1) with aqueous formalin, concentrated hydrochloric acid and hydrogen chloride gas; (2) with chloromethyl ether; (3) with aqueous formalin and concentrated hydrochloric acid and the resultant products reduced as above, with zinc powder.  A sample has been furnished under Sect. 2 (5) of benzyl tocopherol prepared by treating a tocopheral concentrate with benzaldehyde and hydrogen chloride followed by reduction with zinc dust.
Patent GB-1285798-A (GB)
Title: Production of polysaccharides hydrolysing enzymes
Inventor: CRESCENZI GIOVANNI SERLUPI
IPC: C12P39/00
Filed: 1970-03-12
Abstract: 1285798 Dextranase production PIERREL SpA 19 April 1971 [12 March 1970] 11983/70 Heading C3H An enzyme capable of hydrolysing dextran and like polysaccharides to mono- and oligosaccharides is produced by cultivating together on sucrose a strain of microorganism which produces a polysaccharide and another strain which produces the hydrolysing enzyme. The polysaccharide - producing strain may be Leuconostoc Mesenteroides or Streptococcus PK-1. The enzyme-producing strain may be Penicillium Funiculosum or P. Lilacinum. The enzyme-producing strain may initially be cultured by itself on sucrose before mixing with the polysaccharide-producing strain.
Patent GB-116609-A (GB)
Title: Improvements in the Construction of Domestic Gas Cooking Stoves.
Inventor: SHERWOOD FREDERICK
IPC: F24C15/32
Filed: 1917-08-23
Abstract: 116,609. Sherwood, F. Aug. 23, 1917. Gas cooking-sloves.-An oven stove is constructed with flue spaces at the sides and back and a boiling space above. An atmospheric burner i is fitted in the skirting space beneath each side flue space, and the products of combustion rise into the boiling space. The back plate of the oven is perforated. The burners are of narrow boxlike construction, cranked as shown in Fig. 4, and are supplied with gas by nipples j projecting into their open ends from a common supply pipe l at the back.
Patent GB-1428661-A (GB)
Title: Stand-by electric power supply units
IPC: H02J9/06
Filed: 1972-03-15
Abstract: 1428661 Standby supply systems VARTA (GREAT BRITAIN) Ltd 11 June 1973 [15 March 1972] 12110/72 Heading H2H A system wherein a load connected to terminals 16, 17 is normally supplied by a D.C. source connected to terminals 9, 10 comprises at least two batteries 5, 8 forming a standby supply, the system further including a voltage comparator device 3 and a switching element 4, e.g. a transistor responsive to the output of the comparator device 3, the arrangement being such that if the voltage of the D.C. source 9, 10 is higher than a reference value supplied to the comparator device 3 the output therefrom renders the switching transistor 4 non-conductive and the batteries 5, 8 are charged by the source 9, 10 in parallel, but when the D.C. source voltage is lower than the reference value the transistor 4 is made conductive whereby the batteries 5, 8 are connected in series to assist the D.C. source 9, 10 in supplying the load 16, 17. Means, such as switches in series with the resistors 6, 7, may be introduced into the system to increase the impedance of the D.C. source when the change from parallel to series connection is effected. In place of the transistor 4 a thyristor or an electromagnetic relay may be used and if desired the comparator device 3 may be provided with positive feedback. Furthermore a series regulator between the input and output terminals may be provided.
Patent GB-1292759-A (GB)
Title: Method and apparatus for cleaning gapped slide fastener chains
IPC: A44B19/58
Filed: 1971-04-29
Abstract: 1292759 Strip fastening TEXTRON Inc 29 April 1971 [30 April 1970] 12152/71 Heading E2S In an apparatus for cleaning a slide fastener chain 20, Fig. 1, of the meandering type, the chain having gapped portions 36 where the interlocking elements 28, 128 are severed from their respective heel members 26, 126, which are still secured to stringer tapes 30, 130, the chain is fed under tension between upper and lower sets of vibrating members 88-94 and 80-86 resp. which frictionally engage the chain to remove the severed heel members. The chain may pass between the two sets of vibrating members that are vertically superimposed Fig. 3 or between each set of vibrating members (224) Fig. 8 (not shown) or (240) Fig. 9 (not shown) and a respective support member (214, 234) (not shown). A support 44, Fig. 1, to limit the lateral movement of the chain may be incorporated.
Patent GB-117523-A (GB)
Title: A Safety Catch Device to Prevent the Accidental Starting of Forging and other Machines.
Inventor: BAKER THOMAS
IPC: F16P3/00
Filed: 1917-08-25
Abstract: 117,523. Baker, T., and Cooke, E. Aug. 25,1917. Levers and rods, locking.-In treadleactuated machine starting - apparatus, the accidental depression of the treadle is prevented when desired by a pivoted catch, such as A<1> which can be thrown into locking engagement with a part of the starting - mechanism, such as pin G<1> on the bell-crank lever L<1> coupled to the pedal by the rod I<1>.
Patent GB-234475-A (GB)
Title: Valve stem packing
IPC: F16K41/02
Filed: 1925-05-11
Abstract: 234,475. Minden Valve Stem Packing Co., Inc., (Assignees of Wilson, T.). May 23, 1924, [Convention date]. Cylinders; pistons.-In a stuffing-box substitute of the type in which a piston on the stem 5 works in a liner, a flange 12 on the liner is clamped between the mouth of the stuffing-box and an extension 13 secured by bolts 14. The piston comprises packing rings secured against a shoulder 6 on the rod by nuts, or by a cotter 9. The Specification, as open to inspection under Sect. 91 (3) (a) comprises also modifications in which the packing rings are secured by nuts and the member 13 is not in contact with the end of the stuffing-box. This subject-matter does not appear in the Specification as accepted.
Patent GB-1254652-A (GB)
Title: C20-aminodicarboxylic acids and derivatives thereof
Inventor: WAKAMATSU HACHIRO
IPC: A01N37/44
Filed: 1970-03-13
Abstract: 1,254,652. Lubricants; detergents. AJINOMOTO CO. Inc. 13 March, 1970 [14 March, 1969], No. 12295/70. Headings C5D and C5F. [Also in Division C2] Detergent compositions (e.g. liquid or powdered detergents with or without enzymes, soaps, or shampoos) comprise acids of Formula I: wherein n is 7 or 8, and R 1  and R 2  are independently H or C 1-8  alkyl, or salts or esters of these compounds. These compounds may also be used as lubricants.
Patent GB-675418-A (GB)
Title: Improvements in electrode structure
IPC: C25C7/02
Filed: 1950-05-17
Abstract: In a fused-salt electrolytic cell (see Group XXXVI) a steel cathode is bolted to a copper bus-bar, with a layer of silver alloy interposed between the steel and copper surfaces.  The layer is formed by heating the surfaces, applying thereto a flux consisting of 27.5 per cent lead, 5.2 per cent tin, 24.7 per cent ammonium chloride and 41.8 per cent zinc chloride, then heating the surfaces to a temperature above the melting point of the alloy, and rubbing a stick of alloy against the surfaces until substantial coatings are formed thereon.  The coatings are then p  smoothed and the cathode and bus-bar are bolted together with the alloy surfaces in contact.  The alloy may consist of 33.3 per cent silver and 66.7 per cent tin, or of 30 per cent silver, 21 per cent tin, 35 per cent bismuth and 14 per cent lead.
Patent GB-549222-A (GB)
Title: Improvements in gauges for checking distances and holes
IPC: G01B5/08
Filed: 1941-09-25
Abstract: 549,222. Linear dimension gauges. SMITH, C. Sept. 25, 1941, No. 12422. [Class 106 (ii)] Comprises a particular construction of that type of internal gauge having a body adapted for making contact with the work at two points and a gauging member adjustably fixed therein for contact with the work at a third point. In the form shown in Figs. 1, 3 the body 2 is slotted for lightness and to enable adjustment of the anvil 3. One end of the body is provided with two contacts 5, 5 which may consist of balls driven into recesses. The adjustable anvil 3 is a sliding fit in holes bored in each end of the gauge and carries a ball contact 6. A hole 12 is provided to receive a tool for adjusting the anvil which may be secured by a locking pin having a recess engaging the anvil and a nut 11. The ball 6 may be resiliently mounted as described in Specification 535,675. In a modification, the gauge comprises three parallel anvils, the outer two being fixed in top and bottom spreader blocks through the centre of which the third and adjustable anvil is passed being secured when adjusted to the lower spreader block. In a further form, for smaller holes one central spreader block is used having a handle at rightangles to the plane of the anvil axes. In a further form, the adjustable anvil passes diametrically through a short cylinder provided with a radial handle at right-angles to the anvil. In the form shown in Figs. 14, 15, the gauge is formed by a part cylinder 2 through which the adjustable anvil 3 passes radially and ball contacts 5 are provided as shown. "Go" and " No Go " gauges of this character may be connected by a handle 17, as in Fig. 15. In a final form, Fig. 18, for a limit gauge, two adjustable anvils 3, 3a are provided and two fixed anvils 15, 16 in a plane at right-angles to the plane of the first two. The fixed anvils may be secured to the spreaders by drilling a hole in the spreader and passing a centre punch through to indent the surface of the anvil which is thus expanded into the hole. In addition to the "go" and "no go" anvils one or more additional adjustable anvils may be provided in the manner set out in Specification 539,920 either in advance of the "go" anvil to ascertain when 'the dimension is approached or between the anvils for grading. Specification 539,256 also is referred to.
Patent GB-238614-A (GB)
Title: Improvements in frame sawing machines
IPC: B27B3/14
Filed: 1924-05-21
Abstract: 238,614. Marks, E. C. R., (Wagener Ges., A.). May 21, 1924. Reciprocating-saw machines. - The upper end of a vertically-reciprocating saw frame b is oscillated by a crank and connecting-rod (not shown) about a fixed pivot c, the lower end of the frame sliding in guides. The work w is fed during each up stroke by means of a pawl n oscillated by an adjustable link o driven from the main drive, and acting through gearing to rotate the lower rollers k. The upper rollers k' are carried by racks k<2> moving in guides w that do not extend above the work and are fed downward against the work by pinions v, connected by gearing x, y, z with shafts, rotated by a suspended weight h. The rollers k<2> are raised by hand wheels v<2> and are held up when no work is present by ratchet gear j, j<1>.
Patent GB-830208-A (GB)
Title: Improvements in magnetrostrictive vanadium ferrite
IPC: C04B35/26
Filed: 1958-04-21
Abstract: 830,208. Magnetic compositions. GENERAL ELECTRIC CO. April 21, 1958 [May 7, 1957], No. 12547/58. Drawings to Specification. Class 38 (2). A magnetostrictive mixed crystal ferrite material comprises 40-60 mol. per cent iron oxide, 0.1-1.0 mol. per cent vanadium oxide, less than 18 mol. per cent zinc oxide, the balance nickel oxide. The oxides are ground together in water, dried, powdered, moulded with or without a binder and sintered in air at 1300- 1450‹ C., preferably 1350-1400‹ C. A suitable heating cycle includes heating in seven hours to 1350‹ C., holding for four hours, and cooling in eight hours. Values of coupling coefficient of materials of different composition but all containing 0.5 mol. per cent of V 2 O 5  are tabulated.
Patent GB-225132-A (GB)
Title: Improvements in or relating to electrical resistances
IPC: H01C10/40
Filed: 1924-05-22
Abstract: 225,132. Ball, T. C. May 22, 1924. Variable resistances; wire resistances, cored.- In a resistance of the kind wherein a contacting arm is moved along a resistance element by screw mechanism, an insulating former a, which has exterior grooves b for the resistance wire g, is mounted by means of a coaxial bolt e, between the limbs c, d of a frame of the shape illustrated. A. spindle k mounted parallel to the former a has a long-pitched helical groove m engaged by the head u of a rivet t, which secures a leaf-spring r, s to a block q mounted on the spindle k. The limbs r, s of the leaf spring respectively make sliding contact with the coil g and the part f of the frame when the spindle, k is rotated by a knob z which may carry an indicating pointer. The resistance may be mounted upon a panel x of a piece of apparatus by means of a nut y and a threaded sleeve o which surrounds the spindle k.
Patent GB-209019-A (GB)
Title: A new or improved clamp for horticultural purposes
IPC: A01G17/08
Filed: 1923-05-14
Abstract: 209,019. Gjelstad, A. Dec. 23, 1922, [Convention date]. Clips, spring-wire.-A clip for holding plants or tree branches 3 against espalier wires 1 comprises a spring bow 2 formed at one end with a double bend 4 which normally holds the other end away from the wire. The branch is enclosed in the bow and the free end of the bow is then forced over the wire and retained in position by a hook on its extremity. Loops 6 may be provided to facilitate the manipulation of the clip. In a modified form the spring pressure normally forces the free end over the wire and it is retained in operative position by a stop engaging the near side of the wire. In the modification, Fig. 17, the clip is secured by a single loop 9 at one end and at the other by a double loop 9 which in operative position is held on the wire by a spring forming the end of the loop and engaging either the branch or the wire.
Patent GB-806753-A (GB)
Title: An improved cutting tool with replaceable cutting insert
IPC: B23B27/16
Filed: 1956-04-26
Abstract: 806,753. Tool-holders. KENNAMETAL Inc. April 26, 1956 [May 3, 1955], No. 12909/56. Class 83 (3). A cutting-tool comprises a removable cutting- insert 25 having several alternative cutting edges. The square carbide-insert is seated on a carbide-shim 19 screwed to a face of the holder, which is sloped to give a 5 degree negativerake angle. The insert and a chip-breakerplate 26 are clamped by a claw 29 engaged by a screw 32 rotatable from either end. The chip-breaker may be omitted. The insert and chip-breaker may be triangular.
Patent GB-244338-A (GB)
Title: Improvements in and relating to the locking of nuts
IPC: F16B39/36
Filed: 1925-05-18
Abstract: 244,338. Tinker, F. J. May 18, 1925. Locking nuts.-A nut 3 having a head 9 with a tapered and cylindrical extension 6, 7, is looked to a bolt 1 by a ring 4 which is prevented from separating from the nut by two radial tongues 10 which are slidably accommodated in slots 12 in the base of the ring. A washer 13 which is partially cut through at 14 and 16 is used in conjunction with the nut-lock. On tightening the nut 3 the ring is pressed upwards by the work 2 and compresses the conical portion of the nut into locking engagement with the bolt. The nut is freed by cutting through the narrow portion of the washer at the inner end of the slit 14 and opening out of the washer, whereupon the ring 4 can be lowered so as to release the grip of the nut on the bolt.
Patent GB-1145094-A (GB)
Title: Hydrostatic transmission
IPC: B60K17/10
Filed: 1966-04-25
Abstract: 1,145,094. Hydrostatic transmission; hydrostatic brakes. EATON YALE & TOWNE Inc. 25 April, 1966 [3 May, 1965], No. 17972/66. Headings F2D and F2E. A hydrostatic transmission for an industrial truck comprises a fixed displacement pump FP feeding a variable displacement motor VM through a control valve CV which, at engine idle, connects the pump supply line 21 to its return line through by-pass ducts 12, 22, 23, 25 and a restrictor 11. As engine speed increases above idle pressure build-up downstream of the restrictor acts through duct 24 and chamber C to move the control valve CV right, in opposition to a spring 19, to close the by-pass between grooves 12, 22 for drive take up. Thereafter the pump FP feeds the motor VM through supply lines 21, 13a and a forward-neutralreverse valve DS. The motor exhaust returns to the pump FP through ducts 34, 36, 23, 25 and restrictor 11 and also acts through line 24 and chamber C on the left end of the control valve CV. As the motor exhaust pressure builds up downstream of the restrictor 11 the control valve CV is moved further right until it connects the chamber C to a line 52 to supply motor exhaust pressure through a chamber D, duct 54 in a valve 60 and line 56 to the right end of a servo 51, the piston P of which moves left against the action of a spring 49 to reduce motor displacement as motor exhaust pressure increases. A relief valve CV2 in parallel with the restrictor 11 limits motor exhaust pressure to 30 p.s.i. Excess pressure in the supply line 21 and chamber B due to overload moves left a plunger 40 and the spool 53 of the valve 60 to cut the supply through line 56 to the right side of servo 51 and connect the motor exhaust pressure through passages 54A; 55A, 55B, 57 to the left side of the servo 51 whereupon the motor displacement is increased. During overrun the motor exhaust pressure acts through a line 70 to move a shuttle valve 15 left to disconnect the restrictor 11 and relief valve CV2 from the return line 25 whereafter the return line is limited to 50 p.s.i. by a further relief valve CV4. A relief valve CV7 opens during overrun to return motor exhaust to the motor inlet. When the service brakes are applied a rod 6 coupled to the brake pedal forces the control valve CV left against a spring 5 whereupon a shoulder 20 cuts direct communication between the return lines 36, 23. The exhaust from the motor then flows through a high pressure relief valve CV5 set at 2600 p.s.i. and the back pressure effects braking of the motor VM. An inching treadle may also operate the rod 6 without operating the service brakes. A one-way valve CV3 prevents rotation of the motor in a direction opposite to that selected by the reverse valve DS whilst a parallel high pressure relief valve CV6 prevents excessive pressures if the reverse valve DS is shifted to a reverse ratio position whilst the truck is moving forwardly and viceversa. A hoist is fed from an auxiliary pump H.P.
Patent GB-199891-A (GB)
Title: Improvements relating to key-operated locking mechanisms for railway point and signal apparatus
IPC: B61L11/04
Filed: 1922-05-09
Abstract: 199,891. Roberts, W. S., Burton, J. H., and Railway Signal Co., Ltd. May 9, 1922. Locks, revolving-barrel.-Pin tumbler revolving- barrel locks control railway points and signals. Several forms of lock are described in the Specification; the bolts move parallel or tranversetly to the axis of the, barrel. In the form shown, Fig. 1, the projection 3 on the barrel serves to obstruct the aperture 12 of a staff instrument; in its other position its profile registers with the said aperture. In another form, Fig. 8, a notch 30 in a flange on the barrel is moved into register with a lug 31 on a sliding bar. In a modified form a rectangular lug on the end of the barrel is set to lie in or across a slot in a sliding bar. Fig. 13 shows a lock, the barrel of which is movable axially after rotation by the key; its movements are controlled by a stop 38 engaging a slot 39 in the barrel. The ordinary train staff may be used alone or in conjunction with a key to release the lock. The key may be retained in the lock in all but one predetermined position or may be released in two or more positions by the provision of additional sets of plungers and springs in the coacting members of the lock. Fig. 20 shows a lock in which the key is inserted in a slot 60 in the fixed casing and the barrel 2 is fitted with a crank arm by which it is rotated. Keyholes, obstructing.-Fig. 20 shows also a hinged cover 65 with a projection 66 which prevents rotation of the barrel unless the cover is closed down in which position it prevents access to the key until the barrel is restored to normal position.
Patent GB-1165503-A (GB)
Title: Improvements in or relating to fluid apparatus.
IPC: F15C1/22
Filed: 1968-03-18
Abstract: 1,165,503. Fluid oscillators; pulse shapers. HONEYWELL Inc. March 18, 1968 [March 16, 1967], No. 13084/68. Heading G3H. A fluid control device has means for generating pulses at a frequency determined by a first parameter, e. g. the speed of a turbojet engine, a pulse shaper which determines the duration of these pulses in accordance with a second parameter, e. g. the temperature in the engine's air intake, and an integrator which registers a pressure proportional to the product of the frequency and duration of the pulses. A shaft 21 connected with the engine's compressor shaft, rotates a notched disc 23 arranged to interrupt the flow to a receiver 26 of air at intake temperature issuing from emmitter,25. A mono-stable switch 41 biased to outlet 45 receives these pulses at its control parts 43, 44 via different length pipes 35, 36 at timed intervals which are determined by the temperature of the air. Thus the higher the air temperature, the shorter the duration of the pulses fed from outlet 46 to capacitor 50 the pressure in which is communicated to an acceleration control 54.