baber/WOPTO huggingface dataset:
Patent GB-1006353-A (GB)
Title: Improvements in or relating to anti-fungal sheet packaging material
IPC: B65D81/28
Filed: 1962-06-26
Abstract: Sheet packaging materials are rendered antifungal by applying thereto a continuous or discontinuous (e.g. dotted or striped) coating comprising sorbic acid and one or more chemical substances which will remove compounds or ions which accelerate oxidation and breakdown or which are oxidized preferentially in the presence of sorbic acid. Suitable chemical substances are antioxidants and/or chelating agents.  The base material may be any which is suitable for the intended purpose, e.g. regenerated cellulose film; fibrous or nonfibrous papers; woven or bonded fibre fabrics; metallic foils; natural high polymers such as rubber, and modifications thereof, e.g. rubber hydrochloride; synthetic polymers such as polyethylene, P.V.C., polyvinyl alcohol, polystyrene, polyamides e.g. nylon, polyesters e.g. polyethylene terephthalate or combinations thereof. Additionally, the base may carry on one or both surfaces a thermoplastic coating, e.g. of paraffin wax, microcrystalline wax, amorphous or crystalline vegetable or animal fats or waxes, natural or synthetic elastomers, cellulose ethers or esters, synthetic polymers, e.g. polyethylene glycol, polyethylene oxide, P.V.C., polyvinylidene chloride, natural or synthetic gums and resins or mixtures thereof.  The sorbic acid and the antioxidant and/or chelating agent may be applied in the same or different coating layers, which may contain a thermoplastic binder, e.g. paraffin wax, microcrystalline wax, natural or synthetic elastomers or gums, resins, starches or dextrins, polyvinyl acetate being preferred. Numerous classes and specific examples of antioxidants and chelating agents are given.
Patent GB-1288347-A (GB)
IPC: A43D37/00
Filed: 1971-04-19
Abstract: 1288347 Boots &c FORTUNA - WERKE MASCHINENFABRIK AG 19 April 1971 [8 May 1970] 24487/71 Heading A3B In a shoe making machine of the type in which a lasted upper 10 is moved horizontally below a tool head 6 which is movable vertically so that the tool can follow the contour of the last bottom, the tool head 6 is mounted for vertical movement on a paralellogram linkage 14, 15 and part of its weight is counterbalanced by a spring 18 which engages a counter arm 17 which extends at an angle to the link 14, the angle being chosen such that the counter moment exerted by the spring 18 remains constant over the working stroke of the tool head 6. The point of connection of the spring 18 with the arm 17 is adjustable by means of block 19 and screw 20 and the spring tension is adjustable by screw 21. As the head 6 moves up or down the spring tension is decreased or increased respectively, but this is compensated by the line of action of the spring moving away from or towards the pivot of the arm 17 so that the effective counter moment exerted by the spring 18 remains constant. This tool supporting arrangement may be applied to a shoe bottom roughing machine, the tool consisting of an abrasive band 7 supported on rollers. The last 10 is mounted on a support 3 which is movable in the direction of the arrows 5, the last passing beneath the tool head 6 so that the last bottom 9 is roughened by the band 7 as it passes around the lower roller 8. The pressure exerted by the band 7 on the last bottom 9 remains constant as it follows the contours of the last. At the toe and heel ends the tool head is supported and guided by a roller 13 on the tool head 6 engaging tracks 11 and 12 on the last support 3.
Patent GB-426480-A (GB)
Title: Improvements in or relating to the manufacture of ceramically bonded abrasive articles
IPC: C09K3/14
Filed: 1933-09-04
Abstract: In the manufacture of abrading wheels &c. containing alumina, abrasive grains of alumina are purified by chemical treatment to remove detrimental impurities, and then toughened by heat treatment above 900 DEG  C., and finally bonded with a ceramic bond. In an example, crushed and magnetically treated commercial fused alumina grain, containing about 97 per cent alumina, is boiled in an aqueous solution of hydrofluoric and sulphuric acids, for about 24 hours to remove iron and titanium compounds.  It is then washed, milled and screened, and roasted for about 24--36 hours at a temperature of about 1300 DEG  C.  It is then cooled, screened and moulded with ceramic bonding material and fired at 1050--1080 DEG  C.; after which it is gradually cooled.  A suitable bonding material consists of a mixture of silica, boron trioxide, and alumina with a base or mixture of bases such as potassium or sodium oxide or lime.ALSO:A method of manufacturing ceramically bonded abrasive articles-e.g. grinding wheels-comprises the steps of purifying alumina abrasive grain by chemical-e.g. acid-treatment to remove detrimental impurities-e.g. titanium and iron compounds-toughening the purified grain by heat treatment above 900 DEG  C., and bonding the grain with a ceramic bond.  It is stated that the toughness of the grain approaches a maximum value at 1400 DEG  C.  In an example, crushed and magnetically treated commercial fused alumina grain, containing about 97 per cent alumina, is boiled in an aqueous solution of hydrofluoric and sulphuric acids in the proportions of 5 per cent hydrofluoric and 10 per cent sulphuric reckoned on the dry weight of the grain, for about 24 hours.  It is then washed, mulled and screened, and roasted for about 24-36 hours at a temperature of about 1300 DEG  C. It is then cooled, screened, moulded at a pressure of 1000 lbs. square inch with raw ceramic bonding material in the proportion of 92 1/2 per cent grain to 7 1/2 bond, fired at 1050-1080 DEG  C., and gradually cooled.  As an example of a fired bond composition is given 65 per cent silica, 15 per cent boron trioxide, 10 per cent alumina, and bases.
Patent GB-1103271-A (GB)
Title: Improvements in pumps of the nutating disc type
IPC: F04C9/00
Filed: 1963-06-21
Abstract: 1,103,271. Rotary pumps. R.C. FORD, P. J. SKIPPER and J.V. VOBE. Sept. 17, 1964 [June 21, 1963], No. 24701/63. Heading F1F. In a rotary pump of the nutating-disc type, spherical journals 2a and associated bearings 5 for a nutatable disc-like pumping-member 1 are sealed relative to working chambers 7 on either side of said member by flexible members 21a made of e.g. rubber or synthetic plastics material, each of which may be integral with a lining 21 for a truncated conical surface 6 on an outer body or casing 3, the journals 2a being attached to a pin 15 that rotatably engages with an eccentric inclined bore 16 in a driving-shaft 17. Radial shutter-blades 11 are pivotally attached to the member 1 by rivets 13 to separate a pair of fluid inlet-ports (9), Fig. 2 (not shown), and a pair of fluid outlet-ports (10) from one another, said ports being situated in the casing 3 on either side of slots 12 containing the free edges of the shutter-blades. The member 1 has a covering 14 made of e.g. rubber or synthetic plastics material. A second embodiment of the pump, Fig. 4 (not shown), mainly differs from that shown in Fig. 1 in that the member 1 has an integral tubular sleeve (29) rotatably engaging with an oblique portion (25) of the driving-shaft (27). In a third embodiment, Fig. 5 (not shown), has the integral tubular sleeve (29) rotatably engaging with the oblique portion (25) of the driving-shaft (27), as in the embodiment according to Fig.4, and carries part-spherical sealing members (40) that slidingly engage with a slot (41) defined by the casing 3 and sleeves (35, 36) surrounding the driving-shaft. Flexible sealing-members (43) made of e.g. rubber or synthetic plastics material, are attached to the sleeve (29) and tubular bodies (44) supporting bearings (26) for said shaft. The member 1 has a facing (37, 39) made of e.g. glass fibres, and a peripheral sealing-ring (45) made of e.g. rubber or synthetic plastics material such as P.T.F.E. The shutter-blades 11 may be made of or coated with P.T.F.E. to minimize friction.
Patent GB-1243874-A (GB)
Title: Improvements in or relating to signalling systems
Inventor: THORNCROFT ROY CHARLES
IPC: H04Q1/30
Filed: 1969-05-14
Abstract: 1,243,874. Automatic telephone exchanges; digital transmission systems. STANDARD TELEPHONES & CABLES Ltd. 5 May, 1970 [14 May, 1969], No. 24708/69. Headings H4K and H4P. In a P.C.M. telecommunication system where both speech and data are transmitted using the same n-bit code combinations, the latter are distinguished by being repeated a large number of times and are accepted only if such repetition occurs a predetermined number of times during a predetermined time period. As shown, a data terminal DT comprising a push-button telephone substation is used to make telephone calls and also to send data at a relatively low rate. Data is transmitted at 2À4 k. lits./sec. to switching network ESN, where a register REG is seized. Depression of a push-button at terminal DT will transmit the n-bit code for that digit for not less than 30 ms. and the MD circuit in the register will accept an item of data as valid if it recurrs eight times. If accepted, a character is passed to a store through gates G which are controlled by a persistence check timer circuit which ensures that the original transmission lasted at least 20 ms. If data is to be sent, a start of data code button is provided at the terminal and its end is indicated by another code. Register recall can also be provided by transmitting a code for a longer period.
Patent GB-241012-A (GB)
Title: Improvements in advertising devices
IPC: G09F13/24
Filed: 1924-10-18
Abstract: 241,012. Chadwick, F. N., and Scott & Turner, Ltd. Oct. 18, 1924. Models with characteristic movements; moving gases, utilizing.-A display device for advertising an effervescent salt &c. comprises an empty salt container b, a spoon &c. c, and a receptacle d containing liquid, which parts are so operated that the container b tilts to surround the spoon and then lifts, the spoon turns down and the receptacle d rises till the spoon is immersed in the liquid therein, the spoon rises and the receptacle d falls, and the container b is again lowered to envelop the spoon. The spoon is hollow and its bowl, conveniently of painted copper, or containing Plaster of Paris, is provided with perforations c<1> through which air is forced during its immersion in the liquid, thus giving the appearance of effervescence. The movements are effected by a constantly rotating cam-shaft h, cams n, o, l on which operate a pivoted lever n<1> carrying a wedge n<3> engaging a. wedge n<4> which tilts the container b, a lever o<2> which supports the spoon c, and a lever l<2> which raises the receptacle d. The wedges n', n<4> are kept in contact by an elastic cord n<9>. Another cam m actuates a lever m<1> connected by cords m<2> to a curtain, which is moved by these means and by elastic cords m<5> across the screen opening. Contact cams j, k close a switch j<1> whereby lamps k<2> may be lit for illuminating a legend, and other lamps subsequently lit for lighting up the display parts b, c, d when about to commence an operation with the curtain open. A rotary or other valve o<3> controls admission of air to the openings c<1>, the air being compressed by a pump f and conveyed by a rubber or other tube f'. The intermittent lighting may be effected by a rotating screen, or be dispensed with.
Patent GB-1423896-A (GB)
Title: Container closures
IPC: B65D53/02
Filed: 1973-05-24
Abstract: 1423896 Closure for container THOMAS HUNTER Ltd 17 May 1974 [24 May 1973] 24879/73 Heading B8T A closure comprises a top panel 1, a skirt 3 and a liner 5 having a layer 6 of a substance which has a lower coefficient of friction than the liner 5 when in contact with the container. The substance forming the layer 6 may be a silicone, a wax or a fat. The layer 6 may be applied after shaping or after curing the liner.
Patent GB-1145407-A (GB)
Title: Optical projection screen and mounting bracket
Inventor: ALBEE PERCY FREDERICK
IPC: G03B21/58
Filed: 1966-06-06
Abstract: 1,145,407. Projection screens. Q-PANEL CORP. June 6, 1966, No. 25134/ 66. Heading G2J. A flexible roll-up projection screen 16 of embossed polyvinyl-chloride, for example, has rigid bars 17', 17" fastened to the top and bottom edges and is tensioned by attaching the bars to the ends of vertical bowed resilient rods 28 which are slidable in wall brackets 11 to adjust the tilt of the screen. Bars (17', 17") are of square section, Fig. 2 (not shown), and have grooves on their front faces in which the screen is held by channels (23), and have on their rear faces, recesses (25) to receive the ends of rods (28). Rods (28) have notches (38) to receive locking bails (39) pivoted to bar (17'), and have end slots (29) taking the looped ends of a wire (31) which restricts the tensioning of screen (16). Rods (28) are frictionally held between the fixed lugs (42, 43) of bracket (11), Fig. 6 (not shown), and a spring-loaded centre lug (44) on slidable plate (45).
Patent GB-478382-A (GB)
Title: Improvements in or relating to numbering boxes or machines
IPC: B41K3/10
Filed: 1936-09-16
Abstract: 478,382. Number-printing apparatus. SUESS, P. W. Sept. 16, 1936, Nos. 25183 and 25955. [Class 100 (ii)] A type-high numbering-box is provided in front of the units wheel with a space to accommodate a repeating disc co-operating with the actuating pawl to effect the desired repeat numbering, and removable from and replaceable in the box without removing the units wheel, the space being filled by a disc having no co-operation with the pawl when consecutive numbering is required. The thickness of the repeating disc is less than the combined thickness of the units wheel and its ratchet wheel. The repeating or filling disc 39, Fig. 4, can be removed or replaced by axially sliding the spindle 13 of the numbering-wheels 16, the spindle being provided with a groove 22 engaged by a guide projection 23 on one end wall of the box. The groove 22 may be the usual drop cypher groove. The repeating disc 50 shown in Fig. 10 permits each number to be repeated four times and is provided with groups of ratchet teeth 45 separated by deep notches 46, the number of teeth in each group being one less than the number of repeats. By arranging the detent pawl 25, Fig. 7, for the repeating disc diametrically opposite to the actuating pawl 18, repeating discs of which the total number of teeth and notches is an even number may be employed. The pawl 40 actuating the units wheel has an adjacent slightly longer tooth 41 to actuate the repeat wheel. The disc 39, Fig. 7, is the filling disc allowing consecutive numbering and, in addition to a notch 42 to receive the detent pawl 25, has a notch 43 sufficiently long to allow the pawl tooth 41 to move idly therein. To allow continuous printing of the same number, a cylindrical disc may be substituted for the disc 39, this disc holding the pawl 40 clear of the ratchet disc of the units wheel. The detent and actuating pawls may be held inoperative during the substitution of the repeating disc by a clip 51, Fig. 11, applied to the bottom of the box, the clip having a bent portion 52 to engage the detent pawls, and a pivoted plate 55 to engage the actuating pawl 18. The complete set of numbering-wheels 16 and the repeating disc may be removed as a whole by pushing out the spindle 13 by means of an auxiliary spindle of just sufficient length to support the wheels and disc, the auxiliary spindle being pushed completely into position by a tool inserted through an end wall of the box. Specification 477,427 is referred to.
Patent GB-1436920-A (GB)
Title: Polyisocyanates and a process for their production
IPC: C08G18/78
Filed: 1974-06-06
Abstract: 1436920 Polyurethanes BAYER AG 6 June 1974 [8 June 1973] 25206/74 Heading C3R [Also in Division C2]  Polyurethanes are obtained from di- or triisocyanates of the Formula I wherein R is an optionally substituted aliphatic, cycloaliphatic, aromatic or araliphatic hydrocarbon radical and X is a hydrogen atom or a group of the formula
Patent GB-1088926-A (GB)
Title: Electroresponsive devices
Inventor: DALY BRIAN BOMAN
IPC: H02K7/12
Filed: 1965-06-15
Abstract: 1,088,926. Electric motors. WOODS OF COLCHESTER Ltd. May 19, 1966 [June 15, 1965], No. 25271/65. Heading H2A. In a dynamo-electric machine, e.g. a motor, having a plurality of windings A, B, the windings are energized firstly to cause the rotor C to rotate and secondly to cause the rotor to move axially so that it is restrained from rotation, e.g. by a brake E. The windings are energized in parallel to cause the rotor to rotate and the friction lining E of the brake disc D is biased by spring H away from the pole sides. When the windings are connected in series by a switch (SW) (Fig. 2, not shown), which is operated by a member driven by a toothed wheel G, each pole has the same magnetic polarity and the brake disc D is attracted to the sides of the poles and the rotor is stopped. The rotor will remain in this stopped position as long as the electrical supply is connected. On removing the supply the brake is released and the member driven by wheel G under the action of gravity or a spring causes the rotor to rotate back to its original position. The motor rotor may carry a squirrelcage or may be solid with a cylindrical copper sheath forming the cage. The stator may be of the two-pole shaded pole type.
Patent GB-356449-A (GB)
Title: Improvements in or relating to screwdrivers and other tools having removable bits
IPC: B25B23/00
Filed: 1930-08-25
Abstract: 356,449. Screw-drivers, spanners, &c. GUEST, KEEN, & NETTLEFOLDS, Ltd. and DEACON, H., Heath Street, Birmingham. Aug. 25, 1930, No. 25281. [Classes 61 (i) and 61 (iii).] Toothed holding and clamping and contracting devices socket fixings.-A hand tool having removable bits, such as screw-driving bits, box-spanners, or drills, comprises a shank 1 the end of which is flattened at 10 and grooved at 8 to provide teeth adapted to engage complementary teeth on a bit 2, the parts being secured together by a slidable split ring 12 which is contracted by a screwed ring 17. In a modification, Fig. 6, the respective flats on the shank and bit are slightly inclined to the tool axis and the outer tooth 101 on a bit is slightly larger, and engages a shallower recess 9<1>, than the inner tooth 10. In this case the parts are locked together by a plain sliding ring 12. Hollow handles.-The handle of the tool may be provided with an axial cavity 19 to receive spare bits &c., and is closed by a screwed cap 20.
Patent GB-255195-A (GB)
Abstract: 255,195. General Electric Co., Ltd., and Smithells, C. J. May 26, 1925. Vacuum tubes.-To enable filaments to be contained within a relatively small space, for use in indirectly heated cathodes, they are wound on a support prepared by sintering magnesia powder at about 1800‹ K. to form a compact body which does not shrink on further heating, grinding the sintered magnesia, moulding the ground material, mixed if necessary with a small proportion of unsintered magnesia, into the desired form, and finally heating the moulded body above 3300‹ K. by contact with or radiation from tungsten heated nearly to its melting point, so that the magnesia is fused on its surface.
Patent GB-578184-A (GB)
Title: Lighting systems and lighting units for use therein
IPC: F21V7/09
Filed: 1944-12-20
Abstract: 578,184. Lighting systems; reflectors. HOLOPHANE, Ltd. (Holophane Co., Inc.). Dec, 20, 1944, No. 25547. [Classes 75 (ii) and 75 (iv)] Asymmetric lighting units are used along the margins of a working area, as shown by the small circles in Fig. 2, so that light is not wasted on the walls, symmetric units being used elsewhere, as shown by the crosses. An asymmetric unit has a reflector 20, Fig. 4, and an horizontal mouth 22 approximately 35 degrees below a light centre and an horizontal top opening 23 approximately 60 degrees above the light centre. For 240 degrees about the vertical axis the reflector has a comparatively steep inwardly concave profile 24, and for the other 120 degrees a shallower profile 25 which comes in to a radius approximately equal to that of the top at about 30 degrees above the light centre. The profiles 24, 25 are joined by optically inactive radial elements 27 and a cylinder 26. The reflector may be made of prismatic or exteriorly mirrored glass. In a modification, the profile 24 may change gradually into the profile 25, or the profile may be joined by sweeping curves, in which case the reflector is made of metal. Alternatively steps may be provided whose profile is intermediate to those of 24 and 25. In the modification shown in Fig. 9, both profiles 61, 63 are equally steep, but the profile 63 which extends more than 180 degrees about the vertical axis in stepped, and the profile 61 has inner refractory prisms 62 such that the emergent rays 64 make a smaller angle with the vertical than the rays 65.
Patent GB-717135-A (GB)
Title: Improvements in stop motions for gilling and like textile machines
Inventor: PEARSON EDGAR
IPC: D01H13/16
Filed: 1951-11-02
Abstract: 717,135. Stop motion for gilling &c. machines. ELECTRICAL PRODUCTS (COLNE), Ltd. Nov. 3, 1952 [Nov. 2, 1951], No. 25627/51. Class 120(2) A stop motion for gilling and like textile machines of the type in which each sliver is fed to the machine over a pivoted curved plate adapted to be held in position by the sliver and to rock into a second position on the absence of the sliver to actuate a switch controlling an electric stop motion is characterized in that the curved plate is pivoted by lugs arranged below,the centre of gravity of the plate on a switch box, the pivot means carrying one contact of an electric switch which engages a second contact of the switch to operate a stop motion when the pivoting of the curved plate causes the contact to 'close on the absence of a sliver. As shown, each sliver passes over a curved plate A pivoted on a lug a below its centre of gravity on a switch box B carried by an angle bar A<SP>1</SP>. A rod a<SP>1</SP> forms the pivot and is affixed to lug a. The rod a<SP>1</SP> carries a bracket b' on which is mounted a switch contact b which engages a second switch contact b<SP>2</SP> on the switch box B when the plate pivots into the chain dotted position shown in Fig. 3, consequent on the sliver breaking or being exhausted. The closing of the contacts b, b<SP>2</SP> operates a stop motion to stop the machine. A bar C, affixed to the angle bar A' by brackets c', has stationary curved guides C' attached to it. Alternatively the guldes C<SP>1</SP> can be formed in one with the plate A. Means may be provided for holding the plates A to prevent them from operating the stop motion when fewer than the maximum number of slivers are passing through the machine.