baber/WOPTO huggingface dataset:
Patent GB-137699-A (GB)
Title: Apparatus for twisting and bending harrow beams
IPC: B27H1/00
Filed: 1919-04-02
Abstract: 137,699. Auchinachie, J. April 2, 1919. Agricultural machines. - An apparatus for simultaneously bending and twisting harrow beams consists of a vice 1 for holding the beam 2, and a pair of tongs 6 for twisting the beam which is secured to and rotates a disk 7 mounted on a carrier 12 and having a spiral or cam rib 8 for operating a pivoted bender 9. The tongs are preferably held in closed position by bolts 6a. The movable jaw of the vice is operated by a lever 3 guided by a slotted quadrant 4 secured to the bed.
Patent GB-550797-A (GB)
Title: Push-pull electric switch
IPC: H01H15/02
Filed: 1942-06-19
Abstract: 550,797. Press button switches. ARROW ELECTRIC SWITCHES, Ltd. June 19, 1942, No. 8424. Convention date, July 11, 1941. [Class 38 (v)] In a switch operating both by pushing and pulling from a normal position, two bridging bars 20, 40 are slidable on a reduced part of a spindle 18 and held apart by a spring 36. The spindle can be pushed or pulled by the knob 14, pushing separating contacts 22, 24 from fixed contacts 26, 28, and pulling causing contacts 42, 44 to engage with contacts 46, 48, while contacts 22, 24, 26, 28 are still engaged. The moving contacts are spaces apart more widely than the fixed contacts. The spindle rests, owing to the opposed springs 16, 36, in a central position but may be retained m either extreme position by the engagement of a pin 58 in a bayonet slot 55.
Patent GB-1420140-A (GB)
Title: Method of ply-bonding embossed webs
IPC: D21H27/30
Filed: 1974-02-26
Abstract: 1420140 Laminating embossed flexible webs; seaming non-metallic sheet material PAPER CONVERTING MACHINE CO 26 Feb 1974 [2 March 1973] 8592/74 Headings B5N and B5K [Also in Division B6] A laminated tissue or towelling is made by embossing webs W 1 , W 2  to provide projections 30, 31, of height 0À01-0À05 inch and density 10-200 p.s.i./web, interlacing them to provide air spaces between the webs and non-adhesively bonding the webs by compression along parallel spaced-apart lines 27, 28, the directions of the compressive forces being convergent. The webs are separately embossed between rollers and, after superposition, are bonded by passing between a bevelled wheel 16 and an anvil roller 17 which is constructed to have a co-operating bevelled groove 21. The compressive force developed at each pair of bevelled surfaces is sufficient to glassine and bond the webs. If the wheel 16 or anvil 17 is notched, the bonding lines 27, 28 are intermittent. Preferably bonding is carried out along the edges of the laminate. The loading on the individual embossing rollers may be varied by air cushions.
Patent GB-734843-A (GB)
Title: Improvements in or relating to selecting mechanism
IPC: B07C5/36
Filed: 1952-04-04
Abstract: 734,843. Photo-electric sorting arrangements. BAIGENT, G. M. July 7, 1953 [April 4, 1952], No. 8728/52. Class 40 (3). [Also in Group XXX] A selecting mechanism for deflecting selected articles from a stream of articles, comprises a band of flexible material which is stationary at one end and is so connected at its other end, to actuating mechanism so that said other end is moved across the path of the stream of articles to selectively deflect desired articles from said path. In an embodiment, the stream of articles may be inspected by the photo-sensitive device of Specification 730,549 so that the signal generated by the selected article operates to turn a rocking lever, whereby a band of polyvinyl chloride is swung into the stream to eject the said article, the band being returned by spring action.
Patent GB-1029215-A (GB)
Title: Epoxy resin compositions containing dihydropyran derivatives
IPC: C08K5/1545
Filed: 1963-03-05
Abstract: Composition curable by hardening agents comprise a polyepoxide and a dihydropyran compound of Formula I <FORM:1029215/C3/1> <FORM:1029215/C3/2> wherein X is -CO2R1, -CnH2nOR1, or epoxyalkyl, and R is -H or an alkyl radical having 1 to 5 carbon atoms; R1 being an epoxyalkyl radical or a radical of Formula II and n being an integer from 1 to 8.  Many polyepoxides and dihydropyran compousnd are specified.  The hardening agents used are those conventional for use with epoxy resins such as alkalis, alkali phenoxides, polycarboxylic acids and anhydrides, amines, amides and (poly)aminoamides, phosphonic acids and Friedel-Crafts metal halides. The curable compositions may also contain conventional additives such as extenders, e.g. oils, tars, pitches and petroleum distillates, and diluents such as unsaturated nitriles and butyl glycidyl ether.  The compositions are used in preparing coating, impregnating and sealing compositions, foams, pottings, castings and adhesives.  The subject matter of Specification 901,696 is disclaimed.
Patent GB-1262572-A (GB)
Title: Three-phase regulator systems
IPC: H01F29/02
Filed: 1969-02-18
Abstract: 1,262,572. Transformers. WESTINGHOUSE ELECTRIC CORP. 18 Feb., 1969 [8 March, 1968], No. 8757/69. Heading H1T. [Also in Division G3] A voltage regulator for a three phase A.C. supply 182 comprises an autotransformer 192 whose winding 193 is connected across one phase of the supply 182 and has tapping points 194, 198 connected to bidirectional A.C. switches 204, 202 which, together with the other two unregulated phases of the supply 182, supply a rectifier 214 and load 184, the A.C. or D.C. output voltage being sensed and compared with a reference in the circuit 224 to provide an error signal to the firing control 226 for the switches 202, 204, such that the ratio of their conductive times during each half cycle of the supply 182 is adjusted to maintain the output voltage at the reference value. Members 224, 226 are conventional and produce operation in which the initial portion of each half cycle is passed by the lower voltage tapping 198 and the change to tap 194 occurs at an instant determined by the error signal. The switches 202, 204 may comprise reverse-parallel connected controlled rectifiers as shown, a single bidirectional static switch or a static switch across the output of a single phase, full-wave bridge rectifier. The tap positions may be adjusted to provide buck or boost only. It is explained that the described embodiment provides indirect control of the voltage VC<SP>1</SP>A in addition to direct control of the voltage VBC<SP>1</SP>, so that some type of control is provided for substantially two-thirds of the time, Fig. 9 (not shown). The latter Figure illustrates the characteristics of voltage and current against time for the condition in which the regulator is connected such that the unregulated line voltage VAB leads the directly-regulated line voltage VBC<SP>1</SP>, which condition is vectorially illustrated in Fig. 8 (not shown). This regulator connection is suitable for a load having a unity or leading power factor, since it prevents a short circuit condition in which the switch 204 is made conductive before the current through the switch 202 has reached zero. If the load has a lagging power factor, the appropriate regulator connection to prevent the short circuit condition is that in which the unregulated line voltage lags the directly regulated line voltage, the vector diagram and voltage-current characteristics for this connection being discussed, Figs. 10 and 11 (not shown). The-Specification also describes two other regulators, Figs 1 and 4 (not shown), which are not embodiments of the invention and which respectively employ three and two tapped transformer windings connected in closed and open delta between the three phase supply and the output to the load. These embodiments have pairs of switches similar to 202 and 204 for each winding, which switches are controlled in like manner to -maintain a - desired output voltage. The vector diagrams and voltage-current characteristics for these embodiments are discussed, Figs. 2, 3, 5 and 6 (not shown).
Patent GB-744004-A (GB)
Title: Chelating agents comprising polymerized epoxy diamino carboxylic acids and salts
IPC: C08G73/02
Filed: 1953-03-30
Abstract: A water-soluble polymeric chelating agent is made by heating in an aqueous or non-aqueous medium a compound of formula <FORM:0744004/IV(a)/1> where <FORM:0744004/IV(a)/2> represents an alkyl group to two adjacent atoms of which there is attached an oxygen atom; alkylene is -CH2.CH2-, -CH2.CH2.CH2- or -CH.(CH3).CH2-; R1 is hydrogen, -CH2.COOM or -CH2.CH2 COOM; and R2 is -CH2.COOM or -CH2.CH2.COOM, wherein M is hydrogen, alkali metal, ammonium or a substituted ammonium group.  The preparation of the monomers is described in Specification 742,945, [Group IV (b)]. The polymers are of formula <FORM:0744004/IV(a)/3> wherein <FORM:0744004/IV(a)/4> , R1 and R2 are as previously defined; <FORM:0744004/IV(a)/5> represents the group formed when an amino hydrogen forms a hydroxyl group with the oxygen of the <FORM:0744004/IV(a)/6> group and the nitrogen previously carrying said hydrogen attaches to one of the carbons to which oxygen was attached and n is 3-30. The polymers may be added to natural resins, synthetic resins (especially vinyl resins), chlorinated rubber or synthetic or natural rubber or metal ion scavengers, heat and light stabilizing agents or plasticizers.  In an example, epoxy-ethyl ethylene diamine diacetic acid disodium salt was heated for 5-10 hours under reflux conditions in a mixture of dioxane and water.  The sticky product obtained was separated from the reaction mixture and heated in an inert atmosphere at 100 DEG  C. to further polymerize it into a brittle resinous solid.  Specification 600,629, [Group IV (b)], also is referred to.
Patent GB-813919-A (GB)
Title: Improvements in and relating to the treatment of cellulosic textile fabrics with resinous condensation products
Inventor: CAMERON WALTER GLEN
IPC: D06M15/39
Filed: 1956-03-21
Abstract: Cellulosic fabrics are treated in open width with a swelling agent, washed and dried in such a manner that the dry fabric is substantially free from creases, impregnated with a solution of a thermosetting acetone-formaldehyde resin precondensate containing an alkaline catalyst, and then dried and baked.  Cotton, viscose rayon and mixed cotton-viscose rayon fabrics may be treated.  The swelling agent may be an aqueous caustic soda solution, which may contain sodium chloride.  The washing, i.e. removal of swelling agent, may be effected with water at 80 DEG  C.  The resin solution may contain sodium carbonate as catalyst and the subsequent drying may be effected on a stenter.  The treated fabric may be calendered before baking at 140 DEG  C.  Specifications 554,988, 727,882 and 744,093 are referred to.
Patent GB-496916-A (GB)
Title: Improvements in or relating to broach
IPC: B23D43/02
Filed: 1938-03-22
Abstract: 496,916. Broaching- tools. LAPOINTE MACHINE TOOL CO., Ltd. (Lapointe Machine Tool Co.) March 22, 1938, No. 8796. [Class 83 (iii)] A broach particularly for broaching cored holes in cast iron has a number of polyangular cutting sections 21 ... 34 with cutting edges at the angles, the sections being arranged in two series with the odd sections forming one series and the even sections the other series, each series having its angular teeth arranged in axial alignment midway between the aligned teeth of the other series. From Fig. 2 it is seen that the leading teeth 21, 22 of each series cut relatively deep grooves at 30‹ apart on the work, these grooves being widened by cuts taken mainly from the sides of the grooves by the remaining angular teeth. The hole is finally cut to circular form by a cutting section 35 and brought to finished size by successive circular sections 36. Oval or similar shaped holes may be finished in a similar way.
Patent GB-622611-A (GB)
Title: Cutting-off device for extrusion presses
IPC: B21C35/02
Filed: 1947-04-01
Abstract: 622,611. Extruding ; shearing. LOEWY ENGINEERING CO., Ltd., and HAFFNER, E. April 1, 1947, No. 8823. [Class 83 (iv)] A cutting-off device for extrusion presses comprises cutting elements which are urged towards the cutting position by a spring or by fluid pressure but are normally restrained by a catch which is released when a cut is to be made. Extruded rod E issuing from the extrusion die 13 passes through guide tubes 47 and 46 between which is interposed the cutting- device mounted on top of the cylinder 18 of the die-holder shifting device. The cutting-device comprises two rotary members 20, each having four cutting elements. The members 20 are geared together and are rotated intermittently by a ratchet mechanism actuated by a piston 28 and arm 25, the movement of the pawl in the cutting direction being temporarily restrained against the fluid pressure in the cylinder 30 by a catch 34, Fig. 3, released by a solenoid 41 acting through rod 40, pivoted lever 38 and trigger 36. The cutters may be actuated at regular intervals to cut-off equal lengths of rod. In a modification, Fig. 6, co-operating shear-blades 51 are urged in the cutting direction by springs 53 when released by catches 55 under the control of solenoids 59. Dividing by a single blade.-In another form a single blade is operated by a spring, assisted by gravity, when released by a solenoidcontrolled catch. A fluid-pressure cylinder may be used to reset the blade at the completion of the extruding operation.
Patent GB-662971-A (GB)
Title: Improvements in or relating to automatic electric control systems for steam boiler auxiliaries
IPC: F23N3/08
Filed: 1949-04-01
Abstract: 662,971. Control of several D.C. motors. GENERAL ELECTRIC CO., Ltd., ELECTROFLO METERS CO., Ltd., DAVIES, E. C., and GENOMELL, D. C. N. March 31, 1950. [April 1, 1949] No. 8945/49. Class 38 (iii). [Also in Group XXXV], A control system for a fuel fed steam boiler having electric motor driven induced draft fans and forced draft fans in which the armatures of both sets of motors are energised in dependence upon the load on the boiler, the fields of the induced draft motors being energised according to the pressure in the combustion chamber, and the fields of the forced draft motors being energised according to boiler load. The air pressure in a control air line 89 is regulated by a master steam pressure element together with a rate of steam flow component derived from a steam flow transmitter. This line 89 controls the outputs of a full wave connected pair of grid controlled rectifiers 33, 34, wire regulators 47, 48, and phase shifting transformers 44, 45. This in turn controls the armature energisation of a pair of induced draft fan motors 1, 2, and a pair of forced draft motors, 3, 4, the fields of the induced draft motors 1, 2, are controlled by regulator 86 according to the pressure in the combustion chamber. The fields of the forced draft motors 3, 4 are controlled according to boiler load by regulators 91, 92, connected to the control air line 89. Every boiler also has an associated set of fuel supply auxiliaries, e.g. a motor 12 driving an exhaust fan and a motor 13 driving a coal feeder. The fields of these motors are controlled according to steam pressure by regulators 95, 96, connected to a further control air line 93 which is responsive to steam pressure only.
Patent GB-731355-A (GB)
Title: Improvements in or relating to hand trucks
IPC: B62B1/14
Filed: 1952-04-08
Abstract: 731,355. Hand trucks. DRAKE, J. B. March 25, 1953 [April 8, 1952], No. 8959/52. Class 108 (1). A hand truck of the kind having a substantially vertical arched frame providing an unobstructed space for accommodating a load, is provided with braced-together members 17, 18 and pairs of trunnions 35, 36, and so on adapted to take a readily removable cross-bar from which may depend a load-engaging hook In a modification the trunnions engage spigots on a tipping body, and in a further modification, Fig. 6, the cross bars 59 and 61 support one or more extending bars 54 for carrying coils of wire. The truck may be collapsed by unscrewing wing nuts 29, 30, and folding the ties 25, 26 back on to the handle which is then itself turned to lie against the arched frame.
Patent GB-584741-A (GB)
Title: Improvements in or relating to liquid containers
IPC: B64D37/06
Filed: 1944-05-12
Abstract: 584,741. Tanks. SHAKESBY, L., HANNAM, W. A., and IMPERIAL CHEMICAL INDUSTRIES, Ltd. May 12, 1944, No. 9062. [Class 69 (i)] In a liquid container comprising a liquidretaining envelope of flexible sheet material, with or withouta flexible self-sealing external covering, the top surface of the container 1 is formed with; or has secured thereto, a number of pockets or loops 4a, 5a. The latter may be made of leather or fabric, and may form part of longitudinal reinforcing strips. They are engaged by supporting wires or straps 6 with tensioning devices 8 extending between attachment points 7, 9 disposed slightly, above the container on the frame structure 2, 3 of an aircraft or other vehicle. The straps 6 may be made of metal, plastics, leather or webbing, or they may comprise cords or ropes.
Patent GB-330979-A (GB)
Title: Improvements in electromagnetically operated counters or meter mechanisms
IPC: H04M15/10
Filed: 1929-03-22
Abstract: 330,979. Standard Telephones & Cables, Ltd., and Snell, M. S. March 22, 1929. Counters actuated by electric and magnetic means.-A counter, particularly for use as a telephone meter, comprises two frames adapted to be secured together end to end, one frame supporting the magnet and the other the counting- mechanism. The magnet frame 15 is extended at 22 to support the lower edge of the armature 9 which is controlled by a spring 5 adjustably anchored to the toothed extension 36 of the counter frame. The armature is limited in movement by engagement of an arm 38 at its upper end with a recess in the counter frame. The magnet core is adjustably secured by a fixing screw 21 and is reduced and threaded at one end for mounting the meter on a supporting frame. The counter frame 39 supporting the numeral and transfer wheels 1, 3 is preferably a die-casting, and the actuating pawl 7 pivoted to the armature at 8 is bent as shown at 41 to abut against the frame to prevent overthrow. The whole of the counting-mechanism is enclosed by a removable sheet-metal cover. This is cut at 20 and turned up to form a window and the turnedup part may serve to support a number plate 50. The window is covered with transparent material held in place by punched-out tabs.
Patent GB-1286904-A (GB)
Title: Process for reactivation of zeolitic molecular sieves
Inventor: WELKER JUERGEN
IPC: B01J20/34
Filed: 1970-02-26
Abstract: 1286904 Reactivation of zeolites LEUNA WERKE WALTER ULBRICHT VEB 26 Feb 1970 9292/70 Heading C1A Zeolite molecular sieves may be reactivated by burning away deposits, which cannot be desorbed, by means of a gas containing free oxygen, the zeolite being treated with hydrogen or a gas containing free hydrogen prior to the treatment with the gas containing free oxygen. The hydrogen treatment is preferably carried out at 360-600‹ C. at an average linear flow rate of 10 cm./s. and at a hydrogen partial pressure of at least 1 atmosphere. The process is preferably preceded by a desorption phase.
Patent GB-791878-A (GB)
Title: Improvements in or relating to mechanisms for discharging containers, such as bottles, from machines
IPC: B08B9/44
Filed: 1956-03-26
Abstract: 791,878. Endless conveyers. BARRY WEHMILLER MACHINERY CO. March 26, 1956 [Sept. 23, 1955], No. 9321/56. Class 78 (1). Rows of bottles 12 or other containers are lowered from the discharge point 13 of a washing machine on to a platform 32 and pushed across it on to an endless belt conveyer 23 by a series of rotary cams 56. The bottles are guided during their movement by an assembly 30 comprising generally-vertical guide sections 31 and guide walls 33. Each guide section 31, Fig. 5, comprises a pair of inclined walls 34, 35 forming a V-channel and spaced apart to allow the passage of a cam between them. In order that the machine may stop automatically when a bottle becomes lodged in a guide, the platform 32 and walls 33 are secured rigidly to a plate 46 which is mounted rotatably on a shaft 48 and is spring biased into the position shown. The arm 49, to which the spring is attached, has a tip 53 adapted to strike the actuating plunger 54 of a switch 55 in the circuit of the driving motors when the arm moves counterclockwise.
Patent GB-790398-A (GB)
Title: Backward extrusion process for the production of hollow metal bodies
IPC: C10M111/00
Filed: 1956-03-26
Abstract: A lubricant for use in the hot extrusion of metals (see Group XXII) comprises graphite in lamellar form mixed with a combustible organic substance such as sawdust, powdered cork or straw.  It may also contain carbon black or lamp black and a reducible metal oxide such as lead dioxide, bismuth tetraoxide or manganese dioxide.  The lubricant may be in powdered form or suspended in a liquid, preferably water, including a binding agent such as dextrin or sodium silicate.  Specific compositions of lubricants are given. Specification 712,007, [Group XXII], is referred to.
Patent GB-864840-A (GB)
Title: Improvements in boron esters
IPC: F02B3/06
Filed: 1958-03-25
Abstract: The invention comprises metaboric esters and mixed orthoboric esters of substituted phenols having the formula:  <FORM:0864840/IV (b)/1> wherein R stands for a tertiary, alkyl group having 4-10 carbon atoms, preferably t-butyl or t-amyl and R1 stands for hydrogen or for the group:  <FORM:0864840/IV (b)/2> which are prepared by esterifying the phenol by heating it with boric acid or anhydride or an alkyl metaborate in which the alkyl group has from 1 to 10 carbon atoms to give the metaborate of the phenol used, or with a trialkyl orthoborate or a 1, 2 or 1, 3-glycol monoborate to give a mixed orthoborate, i.e. orthoboric acid in which one acid hydroxyl group is replaced by the substituted phenoxy group and the other two acidic hydroxy groups are replaced by alkyl groups or a glycol residue.  The products are useful as additives for hydrocarbon lubricants and fuels (see Group III).  Reference has been directed by the Comptroller to Specification 815,140.ALSO:Metaboric esters and mixed orthoboric esters of phenols of the formula: <FORM:0864840/III/1> wherein R stands for a tertiary alkyl group having 4-10 carbon atoms and R1 stands for hydrogen or for the group <FORM:0864840/III/2> or <FORM:0864840/III/3> the orthoboric esters containing one phenol group and two alkyl groups or a glycol residue, are used as additives for hydrocarbon lubricants and fuels, such as lubricating oils and greases, gasolines, diesel oils and jet engine fuels, in concentrations from 0.005 to 1%.  For example, 2,6-di-tert-butylphenyl metaborate may be added to JP-5 jet fuel in a concentration between 0.01 and 0.1% (for preparation of the esters see Group IV(b)).  Reference has been directed by the Comptroller to Specification 815.140.
Patent GB-674676-A (GB)
Title: Production of paraformaldehyde
Inventor: GREENWALD BERTRAND WILLIAM
IPC: C08G2/08
Filed: 1950-04-18
Abstract: A commercial paraformaldehyde is produced by blending alpha-polyoxymethylene with paraformaldehyde in such proportions that the blend will assay more than 95 per cent formaldehyde. The process may consist of vacuum concentrating an aqueous solution of formaldehyde to recover a paraformaldehyde assaying from about 92 to 94 per cent formaldehyde and then blending the paraformaldehyde thus obtained with the alpha-polyoxymethylene to yield the desired blend having an assay of more than 95 per cent formaldehyde.  A table is given showing comparable data as to rate of solubility and reactivity of paraformaldehyde produced according to the invention and paraformaldehydes of similar formaldehyde assay produced by existing processes.  The reactivity tests used are described.  Alpha - polyoxymethylene may be prepared by precipitation from an aqueous formaldehyde solution by caustic alkali or sulphuric acid treatment.