baber/WOPTO huggingface dataset:
Patent GB-1215203-A (GB)
Title: Improvements relating to motor control systems for tape decks
IPC: H02P7/00
Filed: 1968-05-06
Abstract: 1,215,203. Automatic speed control systems. POTTER INSTRUMENT CO. Inc. May 6, 1968 [June 6, 1967], No.21401/68. Heading G3R. [Also in Division H2] A low inertia permanent-magnet-field D. C. motor is started by supplying its armature with constant current for a predetermined time, is run by supplying its armature with constant voltage and is stopped by supplying its armature with reverse-polarity constant current for a predetermined time. The motor is directly coupled to the capstan of a magnetic tape transport, Fig. 1 (not shown) and is controlled by the circuit shown in Fig.2, which includes series transistors 24a, 24b controlling D.C. sources 16, 22 whose application to the armature 10 of the motor produces clockwise or anti-clockwise rotation respectively. Differential amplifiers 42a, 42b respectively control transistors 24a, 24b to produce constant voltage across the armature 10 as determined by reference potentials 52a, 52b; differential amplifiers 46a, 46b respectively control transistors 24a, 24b to produce constant current through the armature 10 during starting and stopping periods whose durations are respectively determined by the pulse widths of one-shot monostable timing circuits 64a, 64d. Signals from a controller, e.g. a computer, are applied to terminals A, B, and D and to the inputs of circuits 64a, 64b to respectively cause clockwise rotation, anti-clockwise rotation and normal running of the motor. A typical operating cycle for clockwise running is as follows:- (1) Signals are applied to the terminal A and to the input of circuit 64a to respectively unclamp the transistor 24a (normally cut-off by circuit members 26a, 34a) and to cut off a transistor 62 for a predetermined period to unclamp the amplifier 46a. (2) Amplifier 46a controls transistor 24a to maintain constant current for the time interval set by circuit 64a and as determined by potential 58a and that of potentiometer 56a. (3) At the end of this time a signal is applied to terminal D to unclamp the amplifier 42a (normally cut-off by conduction of a transistor 54), which thereafter controls the transistor 24a to maintain constant voltage across the armature 10 as determined by potential 52a and that of potentiometer 45a. (4) Signals at A and D are terminated and signals are simultaneously applied to the terminal B and to the input of the circuit 64d to respectively unclamp the transistors 24b and 46b which then controls the transistor 24b to maintain constant current for the time interval set by the circuit 64d and as determined by the potentials 56b, 58b. The speed of the motor during clockwise rotation may be altered by the application of a signal to a terminal E to apply a predetermined bias to the amplifier 42a. Similar control of the amplifier 42b may beprovided. The signals from E maintains constant motor speed during its normal (constant load) condition of operation.
Patent GB-1000343-A (GB)
Title: Defrost means for refrigerated cabinets
Inventor: BECKWITH STIRLING
IPC: A47F3/04
Filed: 1964-05-25
Abstract: 1,000,343. Refrigerators; defrosting. DUAL JET REFRIGERATION CO. May 25, 1964, No. 21447/64. Heading F4H. The evaporator of an open-fronted display case is defrosted by hot gas from the compressor the flow of hot gas being arranged to induce a flow of liquid refrigerant from an auxiliary refrigerant supply and the flow of liquid refrigerant being heated to produce refrigerant vapour which augments the hot gas flow to the evaporator. As shown in Fig. 1, the display case 10 has an open port 22 across which panels 58, 60 of air are circulated, and passages 38 and 40 for recirculating air from the inlets 64, 62 to the outlets 56, 54, evaporators 42 and 48 being positioned in the respective passages 38, 40. As shown in Fig. 4, evaporators 42, 48 are connected in parallel in a refrigeration system including a compressor 104, condenser 106, receiver 108 and a hot gas line 132 having a heater 134 and valve 138. A container 136 is arranged in receiver 108 to receive liquid refrigerant from the condenser, the end 130 of which depends into the container so that when valve 138 is opened the flow of hot gas through line 132 induces liquid refrigerant from the container 136 to flow through the condenser and into line 132. The liquid refrigerant is converted into vapour by heater 134 and forwarded to evaporator 42 together with the hot gas from the compressor. Valves 122 upstream of the evaporators and a valve 137 downstream of evaporator 42 are closed during defrosting, valve 137 being by-passed by a capillary tube 140 through which refrigerant returns to the compressor. Frost accumulation on the evaporator 42 is distributed more evenly by forming the passage 40 upstream of the evaporator of a greater cross-sectional area than the evaporator, the walls of the passage being converged to engage the evaporator at a point intermediate its ends so that air can enter at the sides of the evaporator as well as at its leading end (Fig. 5, not shown). In modifications (Figs. 2 and 3, not shown), the air circulates across opening 22 from top to bottom and an additional air panel with an associated recirculatory passage is provided. The heater 134 is arranged to operate during the time intervals between defrost cycles to preheat line 132. Specification 997,240 is referred to.
Patent GB-640279-A (GB)
Title: Improvements relating to the production of beer
IPC: C12C7/26
Filed: 1947-08-07
Abstract: In the preparation of beer there is added 10-25 grms of bentonite per 31-gallon barrel subsequent to saccharification of the mash and a relatively small amount of a proteolytic enzymatic preparation, e.g., 1 grm of 1 : 3000 strength pepsin subsequent to the cooling of the wort.  The bentonite may be added to the wort or subsequent to the enzymatic preparation which itself may be added to the beer after the main fermetation.
Patent GB-470214-A (GB)
Title: Improvements in ophthalmic mountings
IPC: G02C5/02
Filed: 1936-08-05
Abstract: 470,214. Spectacle frames. AMERICAN OPTICAL CO. Aug. 6, 1936, No. 21728. Convention date, Sept. 9, 1935. [Class 97 (i)] A bridge comprises two portions 1, 10, the portion 1 having downwardly-extending ends 3 attached at 4 to the lens rim 5, and the portion 10, attached to the rear of the portion 1, having upwardly-extending ends 11 attached at 12 to the rear of the lens rim. The centre of the bridge is curved so as not to bear on the nose, and the ends 3 carry extensions 13 for nose-pads 14.
Patent GB-500295-A (GB)
Title: Method and apparatus for submerged combustion
IPC: F22B1/26
Filed: 1937-08-06
Abstract: 500,295. Subaqueous burners. SEE, T. S., TEGARDEN, J. E., and WILLIAMS, A. Aug. 6, 1937, No. 21731. Convention date, Aug. 6, 1936. [Class 75 (i)] In a submersible burner for heating liquids comprising a combustion chamber 8 having outlets 10 for the combustion products, air is supplied by a blower through a pipe 20, an annular passage 22 and a perforated plate 6 to the chamber 8 to clear the burner of liquid and through a pipe 16 and an opening 18 to the inner pipe 4 and fuel is supplied through a pipe 12 to a jet 14 and is ignited by an electric igniter 26 to project a flame into the chamber 8, and, finally, the main supply of fuel is pre-mixed with the air supplied through the pipe 20. The fuel supply and ignition are thermostatically started and stopped for maintaining a predetermined temperature of the liquid. Alternatively, all the fuel is supplied through the jet 14, the flow of fuel being increased after ignition. In this case the flow of fuel is increased or decreased thermostatically so that the igniter only comes into operation at the beginning of each period of running. Gaseous, or atomized or vaporized liquid, fuel may be used. The burner may be made of corrosion-and heat-resisting materials, e.g. a high nickel, molybdenum, chromium steel for heating acid pickling baths.
Patent GB-181307-A (GB)
Title: Improvements in or relating to machines for manufacturing nails from wire
IPC: B21G3/16
Filed: 1921-08-16
Abstract: 181,307. Wikschtr÷m, J. June 10, 1921, [Convention date]. No Patent granted (Sealing fee not paid). Forging nails.-In a wire-nail machine, the point-cutters 30, 31, Fig. 1, and header 17 are arranged on opposite sides of the gripping jaws 24, 25. The jaw 25 and cutter 31 are adjustably secured to the machine frame 1 and the jaw 24 and cutter are mounted in a slide 22, which is moved by cams 39, 41 and linkwork 40, 37, 36, in one direction, Fig. 7, to cut and in the other, Fig. 9, to hold the wire 26 while being headed. The slide pauses in the middle position after each of these movements to allow the wire to be fed, through straightening- rolls 44, by means of a spring-pressed chisel 17, Fig. 2, on a slide 43, Fig. 1, reciprocated by cams 58, 59, &c. During the return of the slide 43, a spring stop 52 engages a lever 50, which is turned to engage a projection 51 and lift the chisel. On the forward stroke an adjustable spring stop 53 throws back the lever 50 and the chisel engages and feeds the wire. The header 17 is carried by a lever 16 pivoted on a lever 14, Fig. 2, which, in turn, is pivoted to the frame at 13 and is moved by cams 4, 5 and a toggle 11, 12. The rear of the lever 16 is moved by a cam 21 to lift the header during the feed and cut'off of the headed wire and then to hold it so that the upper and lower faces x, y are, in turn, in line with the wire, the cams 4, 5 imparting pressure in these two positions. If desired, the jaws and cutters may be spaced apart according to the length of the nail required, in which case only one feed is necessary at each operation. The head may also be formed at one operation.
Patent GB-398173-A (GB)
Title: Manufacture of vinyl compounds
Filed: 1932-02-01
Abstract: Vinyl compounds containing hydrophile groups, i.e. groups which tend to render compounds containing them more readily soluble or p dispersible in aqueous liquids than compounds devoid of such groups, are manufactured by reacting a vinyl halide with a compound containing a replaceable hydrogen atom and at least one hydrophile group.  Hydroxy groups and carboxylic, sulphonic or amino or other acidic or basic groups are hydrophile groups.  The replaceable hydrogen atom may be present in a hydroxy, carboxylic or amino group. Suitable compounds containing a replaceable hydrogen atom and a hydrophile group are di- or polyhydroxy compounds, hydroxycarboxylic acids, di- or polycarboxylic acids, sulpho carboxylic acids or aminocarboxylic acids, of the aliphatic, aromatic or other series, e.g. glycollic, citric, tartaric, malic, mandelic, oxalic, succinic or maleic acid, benzene di- or polycarboxylic acids, e.g. phthalic acid, hydroxybenzene carboxylic acids, sulphobenzene carboxylic acids and aminobenzene carboxylic acids.  The reaction may be effected in the presence of acid-binding substances, or, where hydroxyl or carboxylic groups are required to react, the compounds may be employed in the form of alkali or other metal derivatives, e.g. sodium salts of glycol, glycerol or glycollic acid may be allowed to react with vinyl chloride in such proportions as to yield vinyl compounds containing hydroxyl or carboxylic groups.  The invention includes the production of compounds substituted in the vinyl group from correspondingly substituted vinyl halides, e.g. ethers or esters or other compounds may be produced from b -chloropropylene.  The products may be polymerized, alone or in admixture with one another or with other vinyl compounds, by the action of heat or light or both in the presence or absence of diluents, and in the presence or absence of substances facilitating the reaction, e.g. organic peroxides such as benzoyl peroxide.  In examples: (1) vinyl chloride is heated to 80-100 DEG  C. in an autoclave with sodium glycol to produce glycol monovinyl ether; the product may be polymerized by warming under a reflux condenser in the presence of benzoyl peroxide and under the influence of radiation from a quartz mercury vapour lamp; the polymerized product may be dissolved in water and used directly for sizing purposes; (2) a mixture of succinic acid monopotassium salt, vinyl chloride and toluene is heated in an autoclave to 100-130 DEG  C., yielding vinyl succinic ester.  The vinyl chloride in the foregoing examples may be replaced by b -chloropropylene, producing the corresponding methyl substituted vinyl compounds.ALSO:A size is obtained by polymerizing glycol monovinyl ether and dissolving the product in water.
Patent GB-345909-A (GB)
Title: Improvements in or relating to the generation of steam
IPC: F01K3/02
Filed: 1930-07-18
Abstract: 345,909. Critical pressure boilers. SIEMENS-SCHUCKERTWERKE GES., Siemensstadt, Berlin.-(Assignees of Siemens- Schuckertwerke Akt.-Ges. ; Siemensstadt, Berlin.) July 18, 1930, No. 21825. Convention date, July 19, 1929. Addition to 247,186, [Class 123 (ii), Steam generators]. [Class 123 (ii).] In a plant comprising a critical pressure boiler 1 and an auxiliary turbine 3 for reducing the pressure of the boiler steam to working pressure, and serving to drive the feed pump 4, as described in the parent Specification, excessive loads on the feed pump are met bv an electric balancing machine 5 and by a turbine section 11, which normally runs idle, but which is supplied with steam from a steam accumulator 12 or other external source when the turbine 3 and the machine 5 are insufficient to drive the feed pump. A governor 8 on the turbine 3 opens and closes a valve 9 in a byepass 10 between the overflow valve 2 and the steam main 6 as the load on the turbine falls and rises. The governor 8 also controls the supply of steam to the turbine section 11.
Patent GB-634337-A (GB)
Title: Methods of making electromagnetic impulse motors
IPC: H02K25/00
Filed: 1947-08-08
Abstract: 634,337. Making shafts for dynamo-electric machines. REMINGTON RAND, Inc. Aug. 8, 1947, No. 21846. Convention date, Oct. 17, 1942. [Class 83 (ii)] A method of forming a rotor shaft for a small electric motor comprises forming an axial bore 17 in one end of a cylindrical shaft 141 removing a segment from the central portion of the shaft to form a flat positioning face 36 and then using this face to position the shaft while the end portion is deformed into an elliptical or other shaped cam portion 16 of a width not exceeding that of the shaft. Across the sides of the gap between the ends of the usual U-shaped stator frame 1 are bolted insulating plates 3 and 4 carrying bearings 13. Adjacent the end portion which is to form the cam 16, the shaft is formed with a portion 15 of reduced diameter and at the other end it is formed with a reduced cylindrical extension 18 terminating in a threaded extension 19. In assembling the rotor, an eccentric 21 is placed over the portion 18 of the shaft a cylindrical member 32 of insulating material is fitted over the eccentric member between end thrust washers 33, 34 of insulating material and the eccentric is held in position by a starting wheel 25 and nut 35. The rear face of the starting wheel has an eccentric recess adapted to fit over the end of the member 21. The shaft 14 is now passed first through the bearing 13 in the plate 4, through the bore of the laminated rotor 37 and then through the bearing in the plate 3, a thrust washer 43 being placed between the rotor and the bearing in the plate 4. The shaft is held in correct axial position for free running by clamping the rotor on to the shaft by means of a screw with a flat end adapted to engage the surface 36. This also effects the correct angular positioning of the cam 16 and rotor 37 and the cam is positioned between the contact springs 9 which it is to operate. Specification 634,336, [Group XXXV], is referred to.
Patent GB-395172-A (GB)
Title: Tag price marking machine
IPC: B41K3/48
Filed: 1932-08-05
Abstract: 395,172. Label-printing machines. MERKELBACH, M., 3, Waisenhausgasse, and SPRINGER, F., 12, Gertrudenstrasse, both in Cologne, Germany. Aug. 5, 1932, No. 22053. Convention date, Aug. 5, 1931. [Classes 100 (i) and 100 (ii).] In a price-label printing- machine the strip of labels w, Figs. 1 and 5, is guided by being pressed against the front wall n of the machine by rollers a, the upper edge of the strip engaging an adjustable guide bar i and its lower edge, bearing the staples or threads, being freely suspended. The strip is fed by a comb c having teeth c<1> to engage notches between the labels and carried by a slide d reciprocated horizontally by an arm d<1> and a cam h, Fig. 4, on a manually rotated shaft o<1>. The comb c is carried by a plunger v mounted in the slide d, and is raised to engage the strip by a spring v<1> on the plunger, and depressed clear of the strip at the end of the feeding movement by the engagement with a part u of the plunger of the end e<11> of a lever actuated by a compound cam g, g<1> on the shaft o<1>. This cam consists of two segmental discs angularly adjustable relatively to each other to vary the effective length of their periphery so as to vary the feed stroke of the comb in accordance with the size of the labels. The comb c is removably secured to the plunger so that it may be replaced by one having teeth of different pitch. The slide d also carries an ink-pad q for inking the type carried by a type holder b. This holder is carried by an arm b<1>, Fig. 5, actuated by a cam k<1> on the shaft o<1>. The high portion k of the cam k<1> moves the holder b into contact with the pad q at the end of the feed stroke of the slide d. The holder then moves back until the pad q has been withdrawn and a second high part m on the cam k<1> then moves the holder forward to print the strip and to sever the leading label by a knife r, Fig. 1, actuated by a connection from the holder b. If the strip is provided with threads, they may be hung over a bar t so as to be clear of the comb c. The rollers a are carried by spring bows a<11> and the guide bar i is adjustable by a socket i<11> and set screw i<1>.
Patent GB-1465725-A (GB)
Title: Brazing materials
IPC: B23K35/00
Filed: 1974-05-17
Abstract: 1465725 Brazing REYNOLDS METALS CO 17 May 1974 [25 May 1973] 22076/74 Heading B3R [Also in Division C7] Aluminium and its alloys are joined by brazing in a vacuum of up to several micron pressure, i.e. at significantly lower pressures than normal, by using a brazing alloy containing: Si 7-14, Mg 0À2-2À0, Bi 0À02-0À20; with up to 1% Fe, 0À2% Cu, 0À25% Mn, 0À6% Zr, 0À6% Ti as impurities; others up to 0À15% total; Al balance. The brazing alloy may be clad on one or both sides of a core comprising 5-15% total thickness. Core materials preferably contain 0À1-3% Mg, up to 1À5% Mu, with up to 0À8% Fe, 0À8% Si, 0À4% Zr, 0À35% Cr, 0À4% Cu and 0À1% Ti as impurities, balance being Al.
Patent GB-907996-A (GB)
Title: Improved air heating and hot water installation
Inventor: SNELLING AUBREY FRANCIS
IPC: F24D5/00
Filed: 1960-06-24
Abstract: 907,996. Air and water heating stoves. AFOS Ltd. June 13, 1961 [June 24, 1960], No. 22119/60. Class 64 (1). In a heating installation comprising a boiler 10 and a calorifier 14 hot water from the former is supplied to the latter via finned tube 17 and tube 22 and returned via tube 23 and finned tube 18 the tubes 17 and 18 being located in an air heating duct 12 and being in restricted communication at their upper ends. The communication is effected by means of a header 19 into which the tubes 17, 18, 22 and 23 open and which has a central orifice 21 formed in a dividing partition 20. When the demand on the calorifier is high the main flow of water from the boiler is through tubes 17, 22, 23 and 18 but when the temperature of the water in the calorifier remains substantially constant the main flow then takes place through tube 17, header 19 and tube 18. In Fig. 2 (not shown) the tubes 17 and 18 do not open directly into the boiler 10 but are connected thereto by further tubes.
Patent GB-1027553-A (GB)
Title: Improvements relating to adhesive tape applying pens
Inventor: RYMER WILLIAM WAYNE
IPC: B65H35/00
Filed: 1963-06-04
Abstract: 1,027,553. Tape dispensers. W. H. BRADY CO. June 4, 1963, No. 22125/63. Heading A4G. [Also in Division B6] A tape dispenser which may be used as a drawing pen, comprises a roll holder 112 from which tape t is withdrawn through an extension 122, over a holding roller 124 and under an application roller 150, the rollers, extension and holder being rotatable together within the bearings 138, 140 of a tubular handle 136. As shown channel shaped extension 122 is soldered at 120 to the holder and is releasably spring locked at 132 within tube 130 carrying the handle bearings and the roller housing 142 provided with knife 146. In another embodiment the extension is a longitudinally grooved rod carrying the holding roller at its end, the axle of which snaps into slots in the application roller housing carried by tube 130. In a further embodiment, the holder and extension are formed in two hinged halves of plastics with a bayonet fitting at the end of the extension which, after passing through the handle, engages with the roller housing.
Patent GB-460719-A (GB)
Title: Improvements in or relating to intermittent film feeding mechanism for kinematographic cameras
IPC: G03B1/18
Filed: 1935-08-06
Abstract: 460,719. Kinematograph cameras. CANNELL, J., and SNAPE, A. Aug. 6, 1935, No. 22210. [Class 97 (i)] In apparatus wherein the film is fed intermittently by a pawl, the pawl being actuated by a connecting rod from a crank on a driving shaft and sliding over the film on its return stroke, the mechanism is controlled by an external stud or plunger engaging a rocker engaging a stop pin on the driving shaft. As shown, a pawl P, having a feed tooth p<2> and a tooth p held by a spring R in engagement with the surface of the film during the feed stroke, is pivoted in a bearing m<1> on a slide M moved in guides N by a connecting rod J and crank disc E. The shaft d<8> of the crank disc carries a stop pin d<9> engaged, when the mechanism is at rest, by a member F which may be rocked about a crossbar f<2>, and against the action of a spring f<3>, by a finger-operated plunger G.
Patent GB-911013-A (GB)
Title: Improvements in or relating to cooking methods and heating means
IPC: A47J37/06
Filed: 1960-06-24
Abstract: 911,013. Cooking-apparatus. VOIGT, O. June 24, 1960 [June 27, 1959], No. 22248/60. Class 28 (1). A charged baking-pan is placed in a vertical column of heat, with the surrounding space open to the atmosphere, the heating below the pan being a maximum below the centre of the pan and tapering off to the perimeter and the open end of the pan receiving uniformly radiated heat. As shown, an appliance particularly for baking cakes comprises truncated conical reflector shells 10, 11 relatively adjustable by means of telescopic columns 16 which may be secured by a clamping screw 17. Shells 10, 11 may be chromed inside and contain respectively heating elements 13, 14, cone 10 also receiving a supporting grid 15. Element 14 may be adjustable, Fig. 3 (not shown).
Patent GB-240628-A (GB)
Title: Improvements in and relating to louis heel binders for use in the manufacture of footwear
IPC: A43D25/12
Filed: 1924-09-22
Abstract: 240,628. Porter, R. B. Sept. 22, 1924. Heels, covering and facing. - A device for clamping the cemented extension of the sole against the breast of a Louis heel until the cement has set comprises a portable telescoping spring- controlled bridle 2 co-operating with an abutment arranged on the top of the last. Preferably, the abutment 10 engages the last by a split pin 11, and is provided with a toothed sector the teeth of which selectively engage a cross piece 9 on the bridle. A ribbed plate 12 may be hinged to the block carrying the usual pad 5, and a turn button 14 may be provided for forcing the plate against the tread to hold the rear portion of the sole in position against the lower part of the heel. The telescoping bridle may comprise springs 3 connecting juxtaposed side limbs 1, 2; or the block may be carried by tubular guides pressed inwards by springs.