baber/WOPTO huggingface dataset:
Patent GB-654356-A (GB)
Title: Improvements in or relating to synthetic lumber and process of making same
IPC: C08L61/20
Filed: 1946-11-27
Abstract: Synthetic lumber and filter material are manufactured from comminuted wood material, e.g. sawdust, ground wood shavings or bark, by first preparing a low condensation incompletely polymerized reaction product by heating one mole of urea, thiourea, guanidine or melamine with more than one mole of formaldehyde or acetaldehyde at a temperature of at least 100 DEG  C. whilst keeping the pH between 8 and 9 until the product has a specific gravity of 29 degrees Baume, cooling to room temperature, adding from 50 to 85 per cent by weight of comminuted wood material which has been dried to contain not more than 4 per cent moisture, adding an acid catalyst which is slow acting at low temperatures and rapid acting at moulding temperatures, and moulding the mass under heat and pressure.  A suitable catalyst is sulphuric acid absorbed on powdered talc. Examples describe the preparation of boards from sawdust and a urea-formaldehyde reaction product prepared as above.  The Specification as open to inspection under Sect. 91 comprises also the use of a mixture of any cellulosic material, e.g. bagasse, cornstalks with amino-aldehyde condensation products in general and a rapid acting acid catalyst.  An example describes the manufacture of a filter from coarse wood waste and urea-formaldehyde resin.  This subject-matter does not appear in the Specification as accepted.ALSO:Synthetic lumber and filter material are manufactured from comminuted wood material, e.g. sawdust, ground wood-shavings or bark, by first preparing a low condensation incompletely polymerized reaction product by heating one mole. of urea, thiourea, guanidine or melamine with more than one mole. of formaldehyde or acetaldehyde at a temperature of at least 100 DEG  C. whilst keeping the pH between 8 and 9 until the product has a specific gravity of 29 DEG  Baum<\>ae, cooling to room temperature, adding from 50 to 85 per cent by weight of comminuted wood material which has been dried to contain not more than 4 per cent moisture, adding an acid catalyst which is slow-acting at moulding temperatures and moulding the mass under heat and pressure.  A suitable catalyst is sulphuric acid absorbed on powdered talc. Examples describe the preparation of boards from sawdust and a urea-formaldehyde reaction product prepared as above.  Moulding temperatures up to 325 DEG  C. and pressures of 100 to 1000 lbs. per square inch are specified.  The Specification as open to inspection under Sect. 91 comprises also the manufacture of lumber from other cellulosic material, e.g. bagasse, corn-stalks, with amino-aldehyde condensation products in general and a rapid-acting acid catalyst.  An example describes the manufacture of filter material from coarse wood waste and urea-formaldehyde resin.  This subject-matter does not appear in the Specification as accepted.
Patent GB-448137-A (GB)
Title: Method of fixing the pin in high tension electric insulators, particularly in suspension and terminal strain insulators
IPC: H01B17/02
Filed: 1934-12-07
Abstract: 448,137. Insulators. SEIFRIED, E., Waldkirch, Breisgau, Baden, Germany. Dec. 7, 1934, No. 35210. [Class 36] A pin 2, Fig. 1, is secured within the cavity 30 of an insulator 1 by a connecting member 9 which is introduced into the cavity before the pin and which is provided with springy claws 4 adapted to snap into recesses 15 in the neck of the pin when the latter is pushed into the cavity. The lower ends 19 of the claws are supported at the edge of the cavity on a ledge 8. To prevent relative rotarv and longitudinal movements between the pin and connecting member, the neck of the pin may be provided with ribs 29 on either side of the recesses and the connecting member may have a dished upper portion 6 which bears on the top of the pin head 3. The free space within the cavity may be filled with a cast mass of metal, cement, or artificial resin. Fig. 2 shows a modified. arrangement employing a plurality of connecting members, such as 9, 10, which are formed of bent meta strip and which are so arranged that the claws 11 of one member are disposed between those of other members. In the form shown in Fig. 3, the connecting member comprises a metal ring 18 having a number of inwardly turned claws 11 which are reinforced by springy inserts 26 retained in position by projections 28 on the claws. The upper end of the ring is provided with inwardly directed springy projections 21 which are adapted to bear on the head of the pin. A cardboard disc 22, or a dished cover 23, may be inserted between the top of the ring and the cavity wall of the insulator. The ring may be laminated and provided with corrugations 25 to increase its elasticity and may be formed as a stamping which is subsequently bent to the shape shown.
Patent GB-414741-A (GB)
Title: Method of operating a vapour generator
IPC: F22B35/10
Filed: 1932-12-12
Abstract: 414,741. Instantaneous steam boilers. BABCOCK & WILCOX, Ltd., Babcock House, Farringdon Street, London.-(Assignees of Lucke, C. E. ; 485, West End Avenue, New York, U.S.A.) Dec. 12, 1932, No. 35239. Convention date, Dec. 12, 1931. [Class 123 (ii).] A method of operating a vapour generator having a once-through fluid conduit receiving liquid at one end and delivering superheated vapour at the other includes the steps of measuring separately by a pair of adjacent indicators the rates of liquid inflow and vapour outflow, normally establishing manually thereby the rate of inflow equal to the rate of outflow, manually controlling the supply of the elements of combustion to provide a desired vapour outlet temperature or pressure, determining the temperature at a point in the conduit just beyond the saturation line and manually readjusting the rate of liquid inflow by increasing or decreasing it as this temperature rises or falls. A generator surmounting a furnace 1 comprises an economizer section A, a water wall section B, a steam generating section C and a superheating section D separated respectively by equalizing headers 26-28 in which fluid from parallel conduits 24, 25 is commingled. Temperature registering elements 47-49 are located near the outlet of the economizer, the inlet of the generating section and at a position beyond the saturation point respectively, metering devices 50, 51, in the feed and steam outlet lines also being provided, together with temperature and pressure indicators at the feed and fuel inlets and steam outlet, and optionally at the air intake and flue gas exit. Rheostats 36, 40, control the feed pump motor and combustion air blower 38 respectively. Specification 414,673 is referred to.
Patent GB-630882-A (GB)
Title: Improvements in carrier wave modulation
IPC: H03C1/22
Filed: 1946-11-28
Abstract: 630,882. Valve modulating circuits. BRITISH THOMSON - HOUSTON CO., Ltd., and BAKER, W. S. GRAFF-. Nov. 28, 1946, No. 35357. [Class 40 (v)] A floating carrier modulating circuit comprises a valve 1, to the grid of which are applied the carrier 3 and the signal 7, the signal being rectified by a contact rectifier or diode 10 and the resulting D.C. bias across the resistor 4 applied to the grid in such sense that the carrier amplitude in the output circuit 2 increases as the signal volume rises. The signal transformer 7 is connected to the grid through a blocking condenser 8, and the rectifier 10 is provided with a delay voltage 9 so that the automatic control only becomes operative when. the signal rises above a predetermined volume. Negative feed-back of the signal frequencies may be effected by a condenser-shunted resistor 6 in the cathode lead, as in Specification 630,881.
Patent GB-873557-A (GB)
Title: Apparatus for indicating rate of flow of gas
Inventor: WHITE FRANCIS
IPC: G01F15/04
Filed: 1958-11-04
Abstract: 873,557. Speedometers. GAS COUNCIL. Nov. 3, 1959 [Nov. 4, 1958], No. 35435/58. Class 106 (3). Apparatus for measuring the rate of rotation of a meter shaft 11 comprises cam mechanism 21 reciprocating a flexible diaphragm 15 to vary the volume of a chamber 14 in dependence on the rotation of the shaft 11, the chamber 14 being bled to atmosphere through an aperture 34 and being connected to a pressure gauge through a nipple 33. The cam 21 has a quicklift ramp 23 and slow-return ramp 24 and rotates at twice the speed of the shaft 11. (Preferably the pressure gauge is of recording type.) According to the Provisional Specification there is provided a cam with two rises co-operating with a pair of rollers.
Patent GB-1526423-A (GB)
Title: Photographic silver halide material containing 2-equivalent yellow couplers
IPC: G03C7/305
Filed: 1975-08-28
Abstract: The 2-equivalent yellow coupler is present in or next to a silver halide emulsion layer. It has, in the coupling position, a group which can be cleaved off (removed) in the form of a 1,3-diazol-2-one compound which is linked via the 1-N atom and has a double bond in the 4-5 position. Further, a carboxyl or acyl group is preferably present in the 4 or 5 position of this group, or a benzo ring is fused on in the 4-5 position. The couplers give high colour density and are distinguished by a reduction in base veil. They also exhibit improved oven stability.
Patent GB-1378732-A (GB)
Title: Electric typewriters
IPC: B41J29/46
Filed: 1971-11-25
Abstract: 1378732 Selective printing RICOH KK 25 Nov 1971 [25 Nov 1970] 35540/74 Divided out of 1373942 Heading B6F A carriage return signal CR from a typewriter 24 enables a tab memory 25 so that each line printed starts with a plurality of spaces. A circuit 16 sets the number of tabs stored in memory 25.
Patent GB-523599-A (GB)
Title: Improvements in guards for presses
IPC: F16P3/04
Filed: 1938-12-06
Abstract: 523,599. Machinery guards. HYDRAULIC ENGINEERING CO., Ltd., and ELLINGTON, N. B. Dec. 6, 1938, No. 35588. [Class 80 (iv)] [Also in Group XXIX] Hydraulic presses, more particularly of the down-stroke type, are provided with a guard panel a having a counterweight so that it may be moved up and down. When in the down or safety position it is locked by turning a handle c integral with a shaft connected by a link d to an arm h engaging a valve control cam i on a shaft i<1> carrying the cams i<2> controlling the valves i' of the press. A spring- urged stop e is depressed by a lug e<1> when the guard is down, thus permitting the handle c to lock the guard. The stop e may be replaced by a long downward projection from the guard frame. One or more props f are connected by linkage g to the locking handle shaft in such a manner that the props cannot be moved inwards under the ram, i.e., the guard cannot, when in its service position, be unlocked, unless the ram is in its upper position and, on the other hand, the props are in the withdrawn position to allow the ram to descend only when the guard has been locked. As a further safeguard not only must the ram be in its upper position before the guard can be unlocked, but it must be connected to exhaust. This is effected by the linkage d, h and cam i the latter being so shaped that the locking lever can only be turned when the cam is in a position in which the ram is connected to exhaust. In a modification, the guard panel is hinged, and attached to the hinge is a cam working in conjunction with an annularly recessed cylindrical prop movable with the ram. In a further modification, Fig. 5, the guard a is locked by a catch k engaging a bar l the catch being on a rod m rotatable by a handle n. A prop o on the rod m is moved under the platen p when the guard is unlocked, the prop also forming an obstruction to prevent the guard from being unlocked unless the platen is up. The rod m also carries a notched plate m<1> which engages a second notched plate m<2> rigid with the valve spindle q. The respective notches are so arranged that (1) the valve spindle can only turn when the guard is locked and (2) the rod m can only turn when the valve spindle is in the position corresponding to the ram being open to exhaust. The bar l attached to the guard prevents the rod m from being turned unless the guard is in the closed position.
Patent GB-1206998-A (GB)
Title: Improvements relating to photographic apparatus
IPC: G03B17/52
Filed: 1968-07-25
Abstract: 1,206,998. Photographic apparatus. INTERNATIONAL POLAROID CORP. July 25, 1968 [July 25, 1967], No.35631/68. Addition to 1,207,000. Heading G2A. The photographic apparatus of the Parent Specification has a separating device for widening the pressure generating gap to facilitate cleaning of the rigid elements 14, 15. The separating device has a pair of camming elements 16, 17 disposed between the arms of springs 10, 11. A manual element 18 has ends 19, 27 embedded in the camming elements. On rotation of element 18 the camming elements rotate from a position where the shorter dimensioned portions extend between the spring arms to a position where the longer dimensioned portions extend between the spring arms to thus widen the gap.
Patent GB-304306-A (GB)
Title: Improvements relating to display devices
IPC: G09F11/26
Filed: 1928-12-03
Abstract: 304,306. Barker, H. B. Jan. 19, 1928, [Convention date]. Reel and endless-web apparatus.- An endless display band 22 is passed round driving and guide rollers, 24 - - 27, preferably of aluminium, which have a helical groove in their surface to improve their frictional grip on the band. The band is moved horizontally in a vertical plane between a plain or frosted glass front 10 and a diffusing screen 15. Lamps 19 behind the screen 15 are in circuit with a driving motor 40, the illumination and motion of the band 22 being continuous. The driving roller 27 coacts with a spring-pressed jockey roller 32, having a retracting handle 38, to draw the band 22 into a magazine 60 where it accumulates in folds. The portion of the band about to pass out ofthe magazine is straightened out by a pair of cooperating members 70, 71 and fed through a narrow slot formed by two square-edged plates 68, 69 and thence over a bed 67 on to which it is pressed by an adjustable spring-loaded drag 72. The ends of the band are permanently connected together by making the meeting edges inclined to the sides and cementing and stitching thereto a strip of material. The legend &c. on the band is in the form of parallel rows of perforations 23, and the lamps 19 are enclosed by a reflector 13 having ventilating holes 20. An opening in the casing 1 gives access to a rheostat handle 56 for controlling the motor 40, which is mounted detachably on vibration-absorbing insulatore. The casing back has ventilation holes and can be turned about a hinge 6 to allow of replacement of the band 22, the pulley 31 of the driving roller 27 being readily detachable for this purpose. The casing is tilted on feet 3, 4.
Patent GB-302682-A (GB)
Title: An improved process for assembling veneers and the like
IPC: B27D1/10
Filed: 1928-12-04
Abstract: 302,682. Wegner, L. M. Cohn-. Dec. 20, 1927, [Convention date]. Addition to 291,794, [Class 20 (ii), Buildings and structures, Miscellaneous accessories &c.]. Affixing by adhesives.-For glueing together veneers &c. endwise in the direction of the grain by the joint described in the'parent Specification, the pieces of wood o, p are fed by overlapping discs e, f arranged on shafts a - d to heated plates l and thence to pressure rollers m, n. By these means an endwise pressure is created between the pieces to be glued.
Patent GB-770011-A (GB)
Title: Improvements in journal and other bearings
Inventor: NEWMAN ARTHUR DEREK
IPC: F16C33/12
Filed: 1953-12-23
Abstract: 770,011. Bearing linings. PARSONS & MARINE ENGINEERING TURBINE RESEARCH & DEVELOPMENT ASSOCIATION. Oct. 18, 1954 [Dec. 23, 1953], No. 35802/53. Divided out of 762,376. Class 12 (1). In a bearing comprising an outer member and an inner lining of anti-friction metal, the surface of the outer member abutting the lining is chemically treated by phosphating or sulphiding to impart to it inherently good anti-frictional properties so that it may act as an emergency bearing in the event of failure of the lining of anti-friction metal.
Patent GB-806650-A (GB)
Title: Improvements in or relating to flange nuts
IPC: F16B37/06
Filed: 1955-12-14
Abstract: 806,650. Anchor-nuts. FIELD, C. L. Dec. 14, 1956 [Dec. 14, 1955], No. 35841/55. Class 89(1) An anchor-nut comprises a flange 5 with a non-circular hole receiving a complementary plug-part 11 of a nut-body 6, which part has a channel or channels 9 receiving the flange-edge, and is splayed - over to secure the body to the flange, leaving a. protruding pilot 7. The flange is spotwelded to a workpiece in a position determined by the pilot.
Patent GB-796192-A (GB)
Title: Improvements in or relating to strap buckles
IPC: A44B11/26
Filed: 1955-12-14
Abstract: 796,192. Strap fastenings; stud and socket fastenings. UNITED - CARR FASTENER CORPORATION. Dec. 14, 1955 [Dec. 14, 1954], No. 35954/55. Class 44 [Also in Group VII] The sheet metal body of a single piece buckle is provided with transverse strapreceiving slots 18 and 19 near one end, and at the other end is formed with a studreceiving aperture 24 with a pair of slots 26 diverging from it towards the slot 18, so that the metal between the slots 26 forms a spring finger 30 adapted to engage releasably a shouldered stud 14 which is secured to a support 16 and pressed upwardly into the aperture 24, the portion 34 of the body member to which the resilient finger is attached being torsionally flexible in response to flexing movement of the finger in a plane substantially perpendicular to the plane of the body of the buckle. As shown the aperture 24 is substantially semi-circular, with a downwardly inclined edge 28, and the spring finger 30 terminates in a reversely curled end 32 disposed opposite the edge 28. The edge of the slot 19 nearer the end of the buckle body may be provided with tangs 20 to assist in retaining in position a strap 12 threaded upwardly through slot 19 and downwardly through slot 18.
Patent GB-1471328-A (GB)
Title: Potentiometers
IPC: H03H7/24
Filed: 1974-08-15
Abstract: 1471328 Potentiometers; component assemblies WILHELM RUF KG 15 Aug 1974 [25 Aug 1973] 35958/74 Headings HIS and H1R A potentiometer comprises three gauged wiper contacts engaging three parallel resistance tracks 8, 9, 10, arranged in a T- or TT-network, the tracks being connected to respective terminals 11, 11<SP>1</SP> by matching inductance loops 23, 23<SP>1</SP>. The contacts are arranged on respective arms of a conductive member 6, the arms being interconnected by a first cross-bar (14, Fig. 2, not shown), adjacent the contacts and a second cross-bar (15) which engages in recesses 18 formed in the wiper carrier 5. Member 6, also has tongues (16, 16<SP>1</SP>) which engage pegs (17, 17<SP>1</SP>) on the carrier. The carrier is actuated by a cross-member 22 thereof engaging the thread of an operating spindle 4; when carrier 5 reaches one of its limits of travel, the resilience of member 6 permits member 22 to jump from one thread turn of spindle 4 to another and give an acoustic warning.
Patent GB-929777-A (GB)
Title: Improvements relating to the manufacture of tyres
Inventor: FLETCHER HENRY RAYMOND
IPC: B29D30/36
Filed: 1958-11-10
Abstract: 929,777. Pneumatic tyres. DUNLOP RUBBER CO. Ltd. Oct. 26, 1959 [Nov. 10, 1958], No. 35962/58. Class 144 (1). A pneumatic tyre carcase 14 is shaped from flat-band form to toroidal form by positioning it coaxially about a shaft 3 with its beads 15 seated on cylindrical bead-locating rings 7 which are slidably and air-tightly mounted one on each end of the shaft 3, moving the rings 7 symmetrically towards each other on the shaft 3 by means of flanges sleeves 1 which bear one against each ring 7 and have opposite-hand screw-threaded engagement with the ends of the shaft 3 for mutual approach and separation on appropriate rotation of the shaft, simultaneously applying radially outward pressure to the carcase throughout its whole periphery by means of pressure air introduced through an inlet 9 in one of the rings 7, and progressively constraining the side regions of the carcase by means of radial flanges 8 on the rings 7 to ensure symmetrical shaping. As shown the carcase is shaped coaxially within a mould ring 12 which carries a tread ring 17 and an inextensible breaker 18, the crown region 16 of the carcase being thereby consolidated to the breaker on shaping.
Patent GB-520062-A (GB)
Title: Metal base for electric discharge tubes
IPC: H01J5/40
Filed: 1938-12-09
Abstract: 520,062. Uniting metal to vitreous material. EGYESULT IZZOLAMPA ES VILLAMOSSAGI R.T. Dec. 9, 1938, No. 35963. Convention date, Dec. 9, 1937. [Class 36] [Also in Group XL] A metal base for electric, especially metal bulb, electric discharge tubes has a glass pump tube sealed inside a metal sleeve on the base plate and emerging therefrom to be sealed off in the usual way, the fused joint being on that side of the base which faces the bulb interior. In the form shown, the sleeve 2 has flanges 2a welded or soldered to the lower face of the base 1. The glass pump tube 4 is sealed at 3 to the inner and outer surfaces of the sleeve 2. The tube is later sealed off at 4a. The current leads 6 are mounted by means of their insulators 7 in metal sleeves 8. The sleeve 2 may be conical and the sleeves may be formed of chromium-iron alloy or nickel-chromium-iron alloy which are readily sealed to'glass. The base plate may be of the same metal or of the usual ferrous metal. The sleeve may be upset or drawn from the metal of the baseplate in known manner.
Patent GB-303006-A (GB)
Title: Manufacture of cellulose esters
IPC: C08B7/00
Filed: 1928-12-06
Abstract: 303,006. I. G. Farbenindustrie Akt.- Ges. Dec. 24, 1927, [Convention date]. Grant of Patent opposed. Cellulose acetates and nitrates, and processes for making films therefrom ; preparatory treatment of cellulose.-In the manufacture of cellulose esters, the cellulose is first treated with the vapour of nitric acid under conditions such that the fibrous condition of the cellulose is preserved. In examples, cellulose nitrates and cellulose nitro-acetates suitable for the manufacture of films or lacquers, are obtained by the further nitration or by the acetylation of cottou which has been treated with nitric acid vapours to give a product containing 1.9-3 per cent nitric acid; the feebly nitrated cellulose may be washed and dried before the further esterification, or the excess of nitric acid may be expelled by air and the product then further nitrated in the usual manner.