baber/WOPTO huggingface dataset:
Patent GB-423855-A (GB)
Title: Improvements in and relating to vehicle brakes
IPC: B61H7/02
Filed: 1933-06-09
Abstract: 423,855. Brakes. WALKER BROS. (WIGAN), Ltd., Pagefield Ironworks, Wigan, and DANCE, H. E., 6, Alexandra Road, Birkenhead, Cheshire. June 9, 1933, No. 16530. [Class 103 (i)] Brakes for track-guided vehicles on steep gradients and rope-propelled vehicles, and on which the brake may be adapted to be applied on the fracture of rope or draw bar, comprises sledges C having replaceablebrake blocks mounted by hubs D on wheel axles which when released are moved by springs S into engagement with the roadway whereupon the vehicle pivots on the hubs D raising the wheels and the weight of the vehicle is transferred to the sledges and guide means are provided to prevent derailment. In the modification shown, the sledges are raised and maintained raised by a pneumatic cylinder H, pressure air in which is released by handvalves or by a speed-governor R driven from road wheel B and having projections r<4> which at a certain speed operate lever t which fractures glass t<4> in air pipe w. A draw-bar beam M<3> fixed to bogie A<1> to which the draw-rope P is attached prevents derailment. The brake cylinders are supplied from a reservoir through a valve or constricted opening and a smaller reservoir or trickle chamber. The pin p<1> to which the draw rope P is attached may be carried in a spring-controlled part which moves, when the rope breaks, to open a valve or break the glass t<4> to release the air pressure and apply the brakes. In a modification the brakes are held released mechanically by means of bars adapted to be pressed by springs into such a position that slots register with the brake supporting levers and allow them to fall to apply the brake. The bars are held released by levers having spring plungers at the ends engaging in an aperture in the governor casing, and adapted to be released therefrom by a lever operated by the governor. Only one bogey is provided with governor-operated release mechanism, the sledges on the other bogey being released by movement of the sledges on the first bogey through Bowden mechanism. The sledges may be released by hand, by Bowden mechanism. The mechanism may be released by electromagnetic or pneumatic mechanism.
Patent GB-612753-A (GB)
Title: Improvements in and relating to the construction of bridges and the like
IPC: A63H33/04
Filed: 1946-05-31
Abstract: 612,753. Bridges. ROPER, E. W. May 31, 1946, No. 16618. [Class 20(i)] [Also in Group XV] Short span bridges capable of carrying light vehicular or pedestrian traffic are constructed from a series of support members a, Fig. 1, each comprising a substantially horizontal base 1 and having spaced arms 2 extending vertically from the base, and a series of connector members b, Fig. 2, having means for interlocking with the bases and arms of the support members so that the said support members may be connected together in spaced parallel alignment. The support members comprise U-shaped pieces of sheet metal of suitable size and strength with a strengthening rib 5 embossed thereon if desired. The upper ends of the arms have slots 4 formed in the inwardly extending portions 3 to provide hook-like portions. The connector members are made in the same material and comprise a generally rectangular body 6 formed with extensions 7 and 8 provided wiht slots 7a, 8a respectively. The upper and lower edges are provided with lugs 9 at right-angles to the body 6. The slots 7a are engaged in slots 4 of member a positioning the slots 8a to fit tightly over the bases 1 of adjacent support members. Floor members may be provided, formed from sheet metal material and provided with upstanding lugs 12 upon which the lugs 9 of the connector members may fit, the main part of the floor resting upon the bases 1 of support members a. The bridge may be of whatever length is desired.
Patent GB-1428874-A (GB)
Title: Polyurethane prepolymers prepared from polyformals
IPC: C08G18/56
Filed: 1974-04-16
Abstract: 1428874 Polyformal-based polyurethanes AMERICAN CYANAMID CO 16 April 1974 [2 May 1973] 16621/74 Heading C3R Polyurethane prepolymers having free isocyanate groups are prepared by reacting an organic diisocyanate with a polyformal having the formula wherein R is derived from an α,#-glycol and contains at least 4 carbon atoms in a single chain or an at least 4 carbon atom chain interrupted by an oxygen or sulphur atom, V is (a) or (b) -OCH 2 OROH and W is (c) or (d) -ROH, the ratio of the total of (b) and (d) to the total of (a) and (c) being not less than 9 : 1 and x being an integer such that the polyformal has a molecular weight of at least 500. The prepolymers may be cured by reaction with a compound containing at least two active hydrogen atoms. The polyformals may be prepared by reacting excess of a diol, preferably 1,6-hexanediol, with formaldehyde in the presence of an acidic catalyst.
Patent GB-167156-A (GB)
Title: Improved manufacture of concentrated hydrogen peroxide solution
IPC: C01B15/032
Filed: 1921-06-17
Abstract: 167,156. Mau, W. July 26, 1920, [Convention date]. Hydrogen peroxide, distilling. - Dilute hydrogen-peroxide solution, prepared for example from barium peroxide and sulphuric acid, is fed into a still in fractions, a fresh portion being added when the previous portion has 'been distilled. The distillation is conducted under reduced pressure. Alternately, the solution may be sprayed into the still through nozzles of hard india-rubber, china clay, glass, or hard lead at a rate such that vaporization of the solution is complete. A concentrated solution is condensed from the vapours, the remaining vapours being afterwards condensed to obtain a dilute solution. Specification 26646/10 is referred to.
Patent GB-545502-A (GB)
Title: Improvements in speed controlling mechanism for controlling the operation of machine tools
IPC: B23Q17/10
Filed: 1940-11-21
Abstract: 545,502. Driving machines; turning. JONES & LAMSON MACHINE CO. Nov. 21, 1940, No. 16754. Convention date, Nov. 22, 1939. [Class 83 (iii)] The speed of operation of a machine tool is controlled by a rockable member which selects the speed of rotation of the work by the aid of a dial adjustable about the axis of said member and marked to indicate both the linear cutting speed and the diameter of the work, a pointer on the rockable member being registered with the speed-selecting dial. As applied to a lathe fitted with a gear selecting and shifting mechanism as described in Specification 439,948, [Group XXIV], in which the required gear is selected by the angular adjustment of a selector shaft 1 which is moved axially to cause cams 3, Fig. 5, to operate rockers 5 connected by arms 6 to gear-shifting mechanism, the angular position of the shaft 1 is determined to give the desired spindle speed by means of a pair of dials which are graduated to allow for the diameter of the work and the linear cutting speed. The shaft 1 is splined to a sleeve 15 which is mounted so that it can rotate in a casing 27 without capacity of axial motion. A scale 31 graduated in " Revolutions per minute " is fixed to the casing 27 and the sleeve 15 is formed with a pointer 30, and the scale 31 with a pointer 35. A revoluble annular scale 41 is graduated on its outer side with markings corresponding to "diameter of cut" and on its inner side to " linear speed ", and this scale is adjusted relatively to the pointer 35 to allow for the desired linear speed. The sleeve is then adjusted to bring the pointer 30 opposite to the marking on the outer scale 41 corresponding to the " diameter of cut ", and the shaft 1 will then be set to produce the required spindle speed by moving the lever 10 about its pivot 14 in the sleeve so as to move the shaft 1 axially. A pin 18 on the lever engages a slot 17 in the shaft. To adapt the mechanism for turret lathes in which a number of different tools may be used to operate on the work an additional adjustment of the spindle speed in accordance with the turret adjustment may be effected by means of the use of a series of rings 50 which are individually adjustable on the sleeve 15 and are held in positions corresponding to definite spindle speeds by means of spring-pressed locking balls 52 engaging recesses. The rings are marked with numbers 56 corresponding to various turret positions and after adjustment as described above, a further adjustment is effected by bringing the required number 56 beneath the pointer 35, and the spindle 1 is then operated to effect the change of gearing.
Patent GB-1105603-A (GB)
Title: Process for the polymerization of episulphides
IPC: C08G75/08
Filed: 1964-04-23
Abstract: A process for polymerizing episulphides comprises contacting one or more episulphides with an anionic polymerization catalyst being a compound of a metal of Group Ia of the Periodic Table, in the presence of a compound containing a labile hydrogen atom as a chain-transfer agent, to produce a polyepisulphide having at least two terminal reactive groups, one of which is a thiol group derived from the episulphide and at least one of which is derived from the chaintransfer agent.  Suitable catalysts are sodium naphthyl, sodium phenyl, lithium butyl, sodium methoxide, anhydrous sodium sulphide, sodium hydroxide and sodium hydrosulphide.  The reaction may be carried out in a solvent for the episulphide or episulphides which is suitably an ether, aromatic or aliphatic hydrocarbon, or a chlorinated hydrocarbon. Reaction temperatures are suitably from 0 DEG  C. to the b.p. of the reaction medium.  Suitable episulphides are alkylene sulphides, unsaturated episulphides and aliphatic cyclic episulphides.  The chain transfer agent may be for example, glycerine, hydrogen sulphide, ethane diol, ethane dithiol, butane triol, or propylene oxide.  The products may be cured by heating in the presence of a curing agent, e.g. the oxides and peroxides of the metals of the B sub-groups of Groups I to IV and the A sub-group of Group V of the Periodic Table.  Other curing agents are, for example, inorganic oxidizing agents such as zinc chromate, lead chromate, and quinoid compounds such as quinone and p-quinone dioxime.  The examples describe the polymerization of propylene episulphide and the copolymerization of propylene episulphide with ethylene episulphide, allyloxypropene episulphides and butadiene episulphide. The molecular weights of the products are in the range 660-13,000.
Patent GB-1104268-A (GB)
Title: Improvements in or relating to electrical display signs
IPC: G09G3/00
Filed: 1966-04-18
Abstract: 1,104,268. Electrical display sign. GENERAL ELECTRIC CO. 18 April, 1966 [19 April, 1965], No. 16869/66. Heading G5C. An electrical display sign has a plurality of serially connected display lamp panel sections, a plurality of logic transfer circuits serially connected to each other for controlling column by column the illumination of the lamps of the sign (Fig. 8, not shown), and an input information circuit comprising a device for selecting the character to be displayed, for example a series of electrical conductors actuated by stepping switch 96, a manual keyboard 100, or time-temperature information circuit 101; connected to the output of the information device an encoder 97 having as output a number of electrical conductors equal to the number of logic transfer circuits needed to generate each character of the sign, and buffer circuit 98 for temporarily storing the information prior to transfer to the sign as logic input V li .
Patent GB-561780-A (GB)
Title: Improvements in or relating to carpet sweepers
IPC: A47L11/33
Filed: 1942-11-28
Abstract: 561,780. Carpet sweepers. STEVENS, A. H. (Bissell Carpet Sweeper Co.). Nov. 28, 1942, No. 16934. [Class 138 (i)] In a carpet sweeper in which the rotary brush 9 is driven by wheels 10 mounted on stub axles, parallelism between the brush and wheel axles is maintained by mounting the wheels in yokes 11 formed of two sides connected by a bight to which is secured a strong flat spring 16, Fig. 1, or bent spring 116, Fig. 4, the other end of the spring being connected to a bracket 19 secured to the casing 2. Equalizing levers 20 also assist to maintain parallelism, the levers being mounted on'the casing and having pin-and-slot connection therewith, with the yokes 11, and with the slide 25 in which the brush is mounted.
Patent GB-1091157-A (GB)
Title: Improvements in or relating to the electrolytic etching of aluminium foil
IPC: C25F3/04
Filed: 1965-04-22
Abstract: Aluminium foil for use as capacitor electrodes is etched electrolytically while an inert gas is bubbled through the etching bath over both surfaces of the foil.  Typically a strip of aluminium foil is fed continuously through the bath and while moving in a vertical direction is subjected to upwardly rising streams of gas bubbles in co- or counter-current flow.  Typically the etching bath is an aqueous solution containing per litre 10 to 20 gms NaHSO4, at least 200 gms NaCl and at least 2.5 gms of aluminium e.g. added as AlCl3, the pH being between 0.5 and 2.8, the temperature being from 85 to 100 DEG C., and an anodic current density of 5 to 10 amps/sq. in being employed.
Patent GB-108983-A (GB)
Title: Improvements in Spring Forks for Motor Cycles and the like.
Inventor: PHILLIPS TOM SPENCER VAUGHAN
IPC: B62K25/24
Filed: 1916-11-28
Abstract: 108,983. Phillips, T. S. V. Nov. 28, 1916. Spring devices.-Spring forks for motor-cycles &c., of the kind pivoted to the steering-pillar by upper and lower links and capable of moving vertically and also of rocking upon the lower links, are fitted with a leaf spring stressed between the lower links and a higher point upon the steering-pillar, and with a further leaf spring stressed between the upper links and a lower point upon the fork. As shown in Fig. 1, a spring G clamped to each lower link D in front of its rear pivot E is linked at H to an arm I on the steering-pillar, and a centrally-disposed spring J linked at K to the forward end of the upper links L is clamped below to the fork limbs C. A sliding connexion M is provided between the upper links and the fork. In a modification. centrally pivoted cantilever springs are used, the pivots of the rear springs being upon a bracket secured to the upper and lower extremities of the steering-pillar, and the pivots of a pair of front springs upon the fork limbs.
Patent GB-825242-A (GB)
Title: Device for automatic controlling of the distance between the grinding wheel and the counter support roller in a centreless grinding machine
IPC: B24B49/04
Filed: 1957-05-29
Abstract: 825,242. Grinding. MALCUS HOLMQUIST A. B. May 29, 1957 [June 15, 1956], No. 17089/57. Class 60. [Also in Group XXXV] A device for automatically controlling the distance between the grinding wheel and the counter support in centerless grinders of the kind in which the work pieces are fed substantially parallel to the axis of the grinding wheel and in which a control device is operatively connected through contacts and relays to a gauging device disposed after the grinding wheel, considered in the direction of feed of the workpieces and adapted to measure the diameter of the ground workpieces and to check such diameter with regard to maximum and minimum sizes, is characterised by a switch disposed after the grinding wheel and adapted for actuation by one of the workpieces to render effective the circuit between the gauging device and the control device only when no gap in a workpiece or between two workpieces occurs at the gauging device. A gauging device 4 gauges the diameter of workpieces 2 after they have left the grinding throat between a grinding wheel 3 and a regulating wheel (not shown) and, through a relay 12, solenoids 13, 14 and pawl and ratchet mechanism 15, 16, 19 increases or decreases the distance between the grinding and regulating wheels as necessary to correct for undersize or oversize. A normally open switch 10 in circuit with the relay normally renders it inoperative. The switch 10 is closed by engagement of a lever 11 by the workpiece 2<SP>1</SP> ahead of the workpiece 2 being gauged, and is allowed to open when the workpiece 2<SP>1</SP>. falls down the shoot. Thus the control responds only to gauging of a short length of its workpiece free from discontinuities. If the workpieces continue in a straight line, the lever 11 is spaced from the device 4 by a distance equal to the length of a workpiece.
Patent GB-1058393-A (GB)
Title: A wax-containing protective coating composition for lacquered surfaces
IPC: C09D191/06
Filed: 1964-04-24
Abstract: A protective temporary coating composition for lacquered surfaces, e.g. automobiles, comprises a solution, slurry, or suspension of wax in a volatile solvent, a covering pigment and an acid neutralizing medium, which may be the same as the pigment, e.g. zinc oxide, the pigment and acid neutralizing medium being present in a total amount of 1-80% wt. of the dried composition. Paraffin or ester waxes may be used.  The solvent may be a hydrocarbon. The pigment may be carbon black, metal, metal oxide, e.g.  TiO2, metal hydroxide, or mixtures thereof, particularly aluminium powder. The acid neutralizing medium may be selected from zinc oxide, basic lead carbonate, or aluminium hydroxide.
Patent GB-848732-A (GB)
Title: Ball point pen
IPC: B43K1/08
Filed: 1958-05-29
Abstract: 848,732. Reservoir pens. FABER-CASTELL, R. G., [trading as FABER-CASTELL, A. W. [Firm of]]. May 29, 1958 [June 12, 1957], No. 17242/58. Class 146(3). The writing tip of a ball-point pen is modified so that writing strokes of varying thickness may be produced by the ball. Fig. 2 shows a tip 2 in which a ball 5 is retained in a housing by a beading 11, ink from a reservoir channel 4 being supplied to the ball through channels 3, and one of these channels is extended to the lower end of the tip by an enlarged channel 6, thus permitting more ink to flow to this point and from the socket if the ball is rotating in alignment with the channel 6. In Fig. 5, a groove 7 cut in the lower end of the tip 2 extends into the end of one of the channels 3. The shank 1 of the tip 2 is marked to indicate the position of the additional channel or groove. The groove 7 permits writing in a more downwardly inclined position.
Patent GB-769861-A (GB)
Title: Improvements in or relating to the construction of groynes
IPC: E02B3/06
Filed: 1955-06-15
Abstract: 769,861. Groynes. HUNTER, E. T. June 15, 1955 [Oct. 18, 1954], No. 17265/55. Class '68 (2). A groyne for erection on beaches for the control of coastal erosion by tidal waters com- 'prises a plurality of plate-like units 'A each having, on one face, transverse spacer ribs 2, 3, 4 provided with shouldered projections 5, and a similar number of apertures 6 having greater cross-sectional area than the projections 5 so that when the units are arranged, e.g. by a crane, contiguously to each other and rearwardly inclined regarding the sea to form a groyne, as shown, the projections fit loosely within the apertures thus enabling each unit to move both laterally and vertically relative to the adjacent units. The groyne is built up from a suitable base such as a block B which is constructed, e.g. of concrete, in a stabilized area of the beach, the outer edge of the block being provded with ribs and projections similar to those on the units A. Steel rods 7 are embedded in the projections 5 on the block B and the units A, the rods being bent upwardly, or laterally, after the projections have been engaged in the corresponding recesses of adjacent units to prevent the units from moving seawards of the base block. After the required number of units have been assembled an end cap C is fitted which is flat on both faces and has apertures which fit the projections of the last preceding unit A. Enlarged units, shown in broken lines Fig. 3 are used where the offshore profile is irregular. In a modification, Fig. 7, notches 21, 21<SP>1</SP> are provided in the tops of the units 13 and B<SP>1</SP> respectively and a top cap 23 with, or without, reinforcing rods 24, is cast between wooden forms 22 fastened to the sides of the groyne, the inclined sides 19 of each upper spaced rib permitting the laying of the forms 22 flush against the sides of the groyne. Vertical ribs may be provided with this type of unit.
Patent GB-835580-A (GB)
Title: A straight-bar knitting machine, with sliding needles having a device for the automatic selection of knitting elements, in the knitting of berets and like articles of headwear
IPC: D04B11/00
Filed: 1956-06-05
Abstract: 835,580. Knitting. ETABLISSEMENTS LEBOCEY-MACHINES. June 5, 1956 [April 3, 1956], No. 17317/56. Class 74 (2). In knitting headgear on a straight-bar sliding needle machine, certain needles are put into operation, independently of the law predetermined by the main drum 35, by a separate auxiliary selecting device comprising a card 24 having a stepped upper edge and swung upwardly, to be interposed between the jacquard cylinder 9 and the needle feet, by a stepped cam 20 and an auxiliary control drum 25. The cam 20 effects movement of the card between the rest position and those positions in which its steps 24a, 24b, 24c respectively are operative to select end needles for knitting close to the centre hole of the crown and for knitting the tassel of a beret; and the drum 25, acting through a link 30, brings the whole width of the card into operation for knitting of the separating and roving courses. The jacquard cylinder 9 is racked round under control of the main drum 35 and houses resilient, removable bits 40 in holes formed by the interactions of longitudinal grooves on the external surface of the drum and circumferential grooves on its internal surface. Interchangeable yarn angers 7, 8 are brought into line with a yarn guide 5, as required, by two rows of studs, one on drum 25 and one on drum 35 and acting through a common follower lever 33, 34, a connecting-rod 41 and an arm 31.
Patent GB-529962-A (GB)
Title: Non-capillary silk suture and method of preparing the same
IPC: A61L17/14
Filed: 1939-06-13
Abstract: 529,962. Surgical sutures ; catgut substitute ; cellulose derivative coatings. AMERICAN CYANAMID CO. June 13, 1939, No. 17319. Convention date, June 16, 1938. [Class 81 (ii)] [Also in Groups IV and XXV] Surgical sutures are made by coating silk strands consisting of a number of threads, twisted, braided, woven or otherwise associated together, with a solution of ethyl cellulose so as to render the strands non-absorbent and so as to remove any tendency of the sutures to carry infection into a wound by capillary attraction. The silk strand is coated with a solution of ethyl cellulose in a volatile solvent and the solvent is evaporated, if desired, after removing excess of solution. Cellulose ethers of viscosities of 10-100 and preferably 20 centipoises may be used. These viscosities are those of 5 per cent solutions of the cellulose ethers in a solvent consisting of 80 parts of toluene and 20 parts of absolute ethyl alcohol. The solvent may be toluene, ethanol, or methyl or ethyl ether of ethylene glycol. Carbon tetrachloride or other diluent may be present in the solution. The silk strand may be immersed in, sprayed with, or otherwise contacted with the cellulose ether solution, and the treatment may be repeated until a coating of the desired thickness is obtained. The coated silk after removal of the solvent may be cut into the required lengths, wound into small coils, placed in glass tubes which are filled with a light mineral oil and then sealed by fusion of the glass. The sealed tubes may be heat sterilized in an autoclave, Before use, the excess of oil is removed from the sutures leaving a thin film of oil thereon which assits in maintaining the non-capillarity of the product.