baber/WOPTO huggingface dataset:
Patent GB-235760-A (GB)
Title: An improved device for trueing up valves
IPC: B23C3/05
Filed: 1924-09-27
Abstract: 235,760. Dunn, H. G. Sept. 27, 1924. Portable turning-apparatus.-In a portable device for trueing-up valves for internal combustion engines &c. the valve, is held by a drawspindle collet chuck in a sleeve 1 rotated by a handle and gearing 4 and is operated upon by a tool adjustably secured in a holder 15. The frame 2 of the device has a stem 3 for securing to a bench or gripping in a vice &c. The holder is cylindrical and slides in a guide 13 pivoted in a forked bracket 14 and secured at the desired angle by a screwed spindle 25 and curved slots 24 in the bracket. The holder is traversed by a screw 21 rotatably mounted in a cap 20 on the guide and engaging a screwed hole in the holder, a gear-wheel 26 on the screw being rotated by a projection on the collar 8 of the sleeve 1. The cutter is held by a screw 18 in a rectangular portion 17 of the holder which projects through a slot in the guide, and a fine adjustment is provided by a screw 19 having a conical end engaging an inclined surface on the cutter. In a modification the bracket 14 may form the toolguide, which is then non-adjustable in an angular sense, or two such fixed guides may be provided at different angles. The sleeve 1, which has a conical seat at one end and a thrust bearing at the other is adjusted axially by nuts 9. Chucks. - The valve-stem is gripped by an interchangeable collet 10 actuated by a hollow draw-spindle 11 operated at 12.
Patent GB-794162-A (GB)
Title: Improvements in or relating to loudspeaker intercommunication systems
Inventor: D ASSIS-FONSE HAROLD MOUNTJOY
IPC: H04M9/00
Filed: 1956-07-25
Abstract: 794,162. Direct call systems. STANDARD TELEPHONES & CABLES, Ltd. July 25, 1956, No. 22959/56. Addition to 770,937. Class 40 (4). In a communication system as claimed in the parent Specification in which each station may call any other station by means of a calling key, the connection between stations including a oneway amplifier the direction of amplification of which is under the control of a talk-listen key at the calling station, each station has a station relay such as HA with an operating winding and a holding winding, the station relay, when energized by the calling key, operating a lockout relay LK which disconnects the operating windings of the station relays at all stations. As shown in Figs. 1 and 2 a station A can connect with a station B by throwing a key B so that relay HA operates over its upper operating winding and locks up over its lower holding winding. HA operates lock-out relay LK which isolates the upper windings of all station relays such as HA and lights a system engaged lamp LSE at all stations other than A. Relay EB is operated by key B and with HA connects station A to station B over amplifier AP. A lamp LB at station A indicates that the connection is made. In the talk position of a talk/listen/call key at station A a relay TL is energized to reverse the direction of the amplifier AP and station B may be called orally or may be called by putting the key into the call position where TL and a relay CR is operated to connect a buzzer B to the amplifier input. At a selected station an over-ride key is provided whereby a relay OR (not shown) may be energized to disconnect any energized station relay such as HA and to light a lamp LOR at each other station to indicate that the system has been taken into priority use. To release the system key B is restored, relay TL being released irrespective of the position of the talk/listen/call key. Relays EB, TL and CR are connected in common to keys at all stations, the keys being isolated from each other by means of rectifiers W1, W2 and W3. An arrangement using non-locking pushbuttons, in place of the two position keys such as B, is described with reference to Fig. 4, not shown. To call station B a push-button is held down until relay EB locks up over a second winding when it lights a lamp indicating to the caller that the connection is made and that the button may be released. In this arrangement an additional button is provided to permit the caller to release his station relay at the end of a call.
Patent GB-406215-A (GB)
Title: Improvements in or relating to rolling mills or like apparatus
IPC: B21B35/14
Filed: 1933-08-17
Abstract: 406,215. Securing sleeves on shafts. AKTIEBOLAGET SVENSKA KULLAGERFABRIKEN, 17, Artillerigatan, Gothenburg, Sweden. Aug. 17, 1933, No. 23014. Convention date, April 18. [Class 80 (ii).] The sleeve 10 which holds the inner race of the bearing 3 of a roll 1 against axial movement, is provided with longitudinal slots 14, so that the internal driving cruciform projection of the coupling 19 may project right through the slots and engage with the cruciform grooves in the roll end. The sleeve 10 is held in position by a nut 13 screwed over stud 12 in the roll end. The sleeve has an annular part 21 to locate it concentrically in an annular groove in the roll neck and also an annulus 11 at the other end to bear against the bearing ring 9 and also to form a labyrinth seal with the ring 6.
Patent GB-440873-A (GB)
Title: Power hammer
IPC: B25D11/12
Filed: 1935-08-16
Abstract: 440,873. Percussive tools. COATES, C. B., 1241, East 49th Street, Cleveland, Ohio, and CHICAGO PNEUMATIC TOOL CO., 6, East 44th Street, New York, both in U.S.A. Aug. 16, 1935, No. 23061. [Class 124] The piston 34, reciprocated by the crank 29 driven from an electric motor 10, the shaft of which carries a cooling'fan 19, carries the cylinder 43 of the hammer piston 42. On the downward stroke air compressed in the cylinder 50 first enters the restricted port 47 and slowly moves the piston 42 downward so that when it uncovers the ports 48 air at a considerable pressure enters the cylinder 43 to throw the hammer piston forward. An access door 27 is provided. Piston 33 is provided with rings to limit the rate at which lubricant escapes from the crank case to lubricate the tool. The drill steel is retained by a sleeve 60 which contains a rubber block 62 to cushion idle blows.
Patent GB-1133377-A (GB)
Title: Improvements in fluid boiling and condensing heat transfer system
Inventor: BURGGRAF FREDERICK
IPC: F28F1/02
Filed: 1966-05-24
Abstract: 1,133,377. 377. Turbine blades. GENERAL ELECTRIC CO. May 24, 1966 [Aug. 18, 1965], No. 23091/66. Heading. F1T. [Also in Division F4] A fluid boiling and condensing heat transfer device, e.g. within a gas turbine blade, Fig. 2 (not shown), comprises a sealed tube containing the fluid, the cross sectional area A in sq. ft. of the tube at the interface between the boiling and'condensing regions of the tube being equal to or not substantially greater than H/# fat CL where H is the maximum heat transfer rate to be effected in operation in Btu's per hour, # fat is the density of the vapour at its saturation pressure at the operating temperature in pounds per cubic foot, C is the velocity of sound in the vapour at, its saturation pressure in feet per hour and L is the latent heat of vapourization of the fluid in Btu's per pound. The weight of the fluid is chosen so that in operation the liquid exists substantially only as a film on the tube wall. The tube may be cylindrical Fig. 1 (not shown) or may reduce in cross-section from the interface towards each end of the tube; such reduction may be effected smoothly Fig. 3 (not shown) or in steps Fig. 4 (not shown). A plurelity of tubes may be filled with a liquid metal and provided within the turbine blade either radially with respect to the axis of rotation or at an angle of up to 70 degrees to the radial direction.
Patent GB-1188975-A (GB)
Title: An Automatic Degaussing Apparatus
IPC: H04N9/29
Filed: 1967-05-18
Abstract: 1,188,975. Cathode-ray tube circuits. NIPPON VICTOR K.K. 18 May, 1967 [30 May, 1966; 9 Aug., 1966; 25 Jan., 1967], No. 23092/67. Heading H4T. [Also in Division H1] In an automatic degaussing arrangement the degaussing coil is connected in a bridge circuit, at least one arm of which includes an element having an appreciable positive temperature coefficient of resistance. The bridge is normally unbalanced and when an A.C. voltage is supplied across one diagonal the current flowing through the degaussing coil, which is connected across the other diagonal, is rapidly reduced to a negligible value as the bridge comes into balance due to the heating effect of the current flow in the temperature-sensitive element. The resulting damped magnetic field produced by the coil then effects the required degaussing of undesirably magnetized apparatus (e.g. the shadow-mask of a colour television tube) in known manner. Fig. 2 shows one embodiment in which the element of positive temperature coefficient of resistance 19 forms one arm of a bridge Z 1 -Z 4  with the degaussing coil 15 connected across one diagonal and the A.C. mains supply connected via switch 13 to the other diagonal. The bridge elements Z 2 , Z 3  may be constituted by the two sections of the tapped primary winding of the mains transformer (Fig. 3, not shown). When considerations of the bridge balance conditions require the resistance value of element 19 to be so high that it cannot be realized in a single element, a number of such elements connected in series is employed and to prevent the voltage drop across any element exceeding the rated value (e.g. if the characteristics of the elements are not identical) all elements are mounted in intimate thermal contact so that the tendency of one to overheat increases the temperature of the others and consequently their resistance and the voltage drop across them (Figs. 5 and 6, not shown). If the element 19 also has a voltage dependent characteristic, the non-linearity of the resistance results in the production of harmonics of the input A.C. waveform and to achieve a perfect bridge balance under these circumstances a second positive temperature coefficient element 24 (Fig. 7) in thermal contact with element 19 is connected in series with the degaussing coil 15. In order to reduce the time required to achieve balance a third positive temperature coefficient element in thermal contact with the other two is connected in parallel with either Z 3  or with Z 2  and Z 3  in series (Figs. 8 and 9, not shown). Other arrangements involving the use of the tapped primary of the mains transformer to replace the bridge elements Z 2  and Z 3  (Figs. 10 to 12, not shown) and the use of the heater chain in the television apparatus to replace bridge element Z 3  (Figs. 13 and 14, not shown) are described.
Patent GB-923102-A (GB)
Title: Improvements in or relating to turbines, blowers, compressors, pumps and the like
Inventor: FRANKEL ADOLF
IPC: F01D25/26
Filed: 1958-07-18
Abstract: 923,102. Axial-flow and centrifugal blowers, compressors and pumps; turbines. RICHARDSONS, WESTGARTH & CO. Ltd. July 10, 1959 [July 18, 1958], No. 23143/58. Classes 110 (1) and 110 (3). A turbine or an axial-flow or centrifugal blower, compressor or pump or the like comprises a rotor surrounded coaxially by a generally tubular casing provided with an inlet and an outlet at or near its ends, and a pressure - retaining outer casing of substantially spherical shape which surrounds the tubular casing with its centre lying generally on the axis of the rotor the outer casing being provided with a circular inlet aperture and a circular outlet aperture, the outlet aperture lying coaxially with the outlet of the tubular casing while the axis of an inlet duct connected externally to the inlet aperture passes through the centre of the outer casing substantially at right angles to the axis of the rotor, the arrangement being such that all fluid reaching the inlet of the tubular casing must enter the machine by way of the inlet aperture in the outer casing. In the axialflow blower shown in Fig. 1, an inner casing 18 is housed in a substantially spherical outer casing 28 constructed from dished metal plates welded together. Mounting rings 30, 32 are welded to the casing 28. An expansion joint is provided between the diffuser 26 and either the remaining part of the casing 18 or the ring 32. An outlet duct (not shown) is welded to the casing 28 at the ring 32, and an inlet duct 36 is welded to the open top of the casing 28 with, it may be, a mounting ring interposed. The casing 28 may be supported by a conical or cylindrical skirt 42, Fig. 5, welded to a forged or fabricated ring 46 which replaces a circumferential section of the casing 28 and is welded to the latter. Vertical slots may be provided in the skirt 42 to reduce thermal stresses. The skirt 42 is tangential to an imaginery sphere of slightly greater diameter than the casing 28; this relieves the casing from bending stresses due to vertical loading through the skirt and differential thermal expansion between the skirt and the casing. The base flange at the lower end of the skirt 42 is slightly conical or of stepped configuration so that a bending moment, capable of neutralizing operating stresses, is applied to the skirt when the base flange is clamped to a flat base. The casing 28 may surround a part only of the diffuser 26. According to the Provisional Specification, the casing 28 may approach an ellipsoidal shape.
Patent GB-914403-A (GB)
Title: Improvements in quick release band clamps
Inventor: LEE-MORRIS GEORGE
IPC: F16L33/12
Filed: 1960-07-02
Abstract: 914,403. Clamp fastenings. EVANS & NEWALL Ltd. May 26, 1961 [July 2, 1960], No. 23214/60. Class 44. A band clamp of the type in which the tightening operation is effected by the two ends of the band being drawn together and secured one over the other in an adjustable manner by means of a toggle lever b1 has the band formed in two parts a, al adjustably secured together and having a link d pivoted on a connecting member for attachment to a rigid tube on a sack or bag-filling machine or other appliance. As shown, the two parts a, a1 are secured together by a bolt and wing nut c, c1 at one end of each part and at the other end of each part by the toggle lever. The toggle lever is pivoted to a base b2 secured to the part a the lever b1 carrying a link b3 which is pivoted to it and which is engageable with a hook a4 formed by bending over the end of the part a1. The toggle lever serves to secure the clamp in place and the bolt and wing nut enables its diameter to be adjusted before securing. The bolt and wing nut also serve to attach the clip to the link d by which it is attached to the article. In a modified construction the bolt and wing nut are replaced by a worm drive mechanism and the link d is pivoted to the housing of this.
Patent GB-1506048-A (GB)
Title: Electrode assembly for polarographic investigation
IPC: G01N33/483
Filed: 1975-05-28
Abstract: 1506048 Electrode assembly SIEMENS AG 28 May 1975 [28 June 1974] 23280/75 Heading G1N In an electrode assembly, the measuring electrode is easily removable. A frusto-conical body 1 has a cavity 2 closable by a cap or flap 12, a second cavity 3 in the opposite face and a central, coaxial bore 5 in which a measuring electrode is removably fitted. The measuring electrode comprises a gold wire 8 in an insulating support and is terminated by electrolyte 9 and membrane 10. It may be oxygen sensitive. It is attached to lead 14 by a solder or crimped joint 13. An annular silver/silver chloride reference electrode 11 is also mounted in second cavity 3. A heating coil 16 of constantin wire may be fed from copper leads 17, 18 to raise the surface temperature of the assembly, the copperconstantin junctions functioning as thermocouples.
Patent GB-719750-A (GB)
Title: Drive mechanism for washing machines
Inventor: FOSTER WILLIS RICHARD
IPC: D06F37/30
Filed: 1952-09-17
Abstract: 719,750. Friction clutches; operating clutches. SOLAR CORPORATION. Sept. 17, 1952, No. 23370/52. Class 80 (2) [Also in Group VIII] A washing machine has means on the shaft 13 of a motor A for driving an agitator (not shown). a liquid coupling D mounted on the shaft 13 and having driving and driven elements, the driven element 39 having means for driving a clothes receptacle (not shown), and a clutch 18, 21 mounted on the shaft and arranged exteriorly of the coupling D for connecting the shaft 13 and. the driving element 31 of the coupling D. The drive to the agitator is by means of a pulley 14, belt C and a suitable clutch and oscillating mechanism (not shown). The pulley 14 has a flange 17 within which is secured a clutch lining 18 adapted to co-operate with a tapered clutch disc 21 in which is fitted a bushing 23 rotatable and slidable on the motor shaft 13. The bushing 23 is a press fit in an axial bore 24 in the drive shaft 25 of the coupling D. The inner race 27 of a ball bearing 26 is slidable axially on the shaft 25, while the outer race 28 is a press fit in a collar 29 having an inturned flange 30 overlying the race 28. The clutch 18, 21 is operated by means of a lever 62 made up of two side bars 63, 64 spread apart near one end to loosely embrace the clutch mechanism. The collar 29 is provided with diametrically opposed radial bosses, Fig. 4 (not shown), into which are threaded two screws, each screwed into one of the side bars 63, 64. The lever 62 is pivoted at 66 and biased upwardly by a spring 68. It is pulled downwardly to cause engagement of the clutch 18, 21 by means of a solenoid 76 whose plunger 77 is connected by an 'L-shaped link 84, and spring 78 to the lever 62. The lower end (not shown) of the spring 78 is connected to the short arm 83 of the link 84 as seen in Fig. 1 (not shown). The lever 84 is pivoted to the plunger 77 at 86, and has a slot 87 in its upper end to receive the lever 62. The tension of the spring 78 holds the upper end of the link 84 firmly against a lug 88 provided on the side bar 63 which is foreshortened. The use of the link 84 enables high initial tension to be produced in the spring 78 without high tension in the spring in its free state. The driving element or impeller 31 of the coupling D is keyed to the upper end of the shaft 25 and provided with a plurality of radial blades 38 and a starting vane 94. The driven element 39 comprises a two-part fluidtight housing 40, 41 provided with radial blades 49. A pulley 57 is formed integral with the lower section 41 of the housing and drives a belt B for driving the clothes receptacle for spin-drying purposes. When the solenoid 76 is de-energized the spring 68 swings the lever 62 upwardly and the collar 29 is moved upwardly until a flange 61 or a series of spaced lugs thereon contacts the underside of the pulley 57 so as to lift the entire coupling D and disengage the disc 21 from the clutch lining 18. Specification 713,056, [Group XXIX], is referred to.
Patent GB-1016586-A (GB)
Title: Vaccine for immunization of dogs against distemper and hepatitis contagiosa canis
IPC: A61K39/175
Filed: 1963-01-12
Abstract: A vaccine for immunizing dogs against infectious canine hepatitis comprises an apathogenic, avirulent, living, duck-embryo-modified infectious canine hepatitis virus (I.C.H.). Modified I.C.H. is produced by serially passing pathogenic and virulent I.C.H. virus through duck embryos a plurality of times and especially at least 37 times.  Preferably the I.C.H. virus is serially passed successively through ferrets a plurality of times and through duck embryos a plurality of times.  The above vaccine may be mixed with a living, chickembryo-modified, canine distemper virus.  The vaccines may be mixed with a stabilizing menstruum containing sucrose and casein hydrolysate.  Compatible bacterial antigens such as inactivated cultures of Leptospirae, Streptococci, Salmonella and Brucellae may also be present.
Patent GB-1494146-A (GB)
Title: Modulator circuit arrangement
IPC: H02M3/335
Filed: 1975-05-29
Abstract: 1494146 Analogue-to-digital conversion; pulse modulation systems WESTERN ELECTRIC CO Inc 29 May 1975 [30 May 1974] 23401/75 Headings H3H and H4L [Also in Divisions G3 and H2] In a regulated D.C.-D.C. converter circuit, see Division G3, the output current (or voltage) is monitored by a resistor 20, Fig. 2, which supplies a signal to one input of a differential amplifier 210 receiving another input from a potential divider 202, 203 connected across a constant voltage diode 212. The output from the amplifier 210 is fed to a further amplifier 220 for comparison with a decreasing sawtooth signal from a generator 221. The output of amplifier 220, which is a width modulated signal, is differentiated by a capacitor 253 to produce a pulse output 250 which controls the switching elements of an inverter. Any variations in frequency of the synchronizing clock source or the sawtooth signal amplitude are compensated by an internal feedback arrangement including a switching transistor 225 which connects a constant current source 224 to one input of the amplifier 210 according to the output of the amplifier 220. Alternatively, the feedback circuit may be arranged to divert current away from the amplifier 210, Fig. 3 (not shown). In addition to the regulating function, a circuit of the form shown in Fig. 2 is also used to produce pulses whose time delay relative to synchronizing pulses represents the magnitude of output current or voltage and which are fed to an input 652 of an alarm circuit, Fig. 6. Marker pulses are produced with predetermined time delays by a counter 605, and bi-stable circuits 601-604 and NOR gates 611-614 operate so that one or two of an array of signal lamps 631-634 are illuminated if the sensed output magnitude is high, very high, low, or very low in comparison with the values defined by the sequence of marker pulses (501-505), Fig. 5 (not shown).
Patent GB-1337717-A (GB)
Title: Optical system for colour television cameras
IPC: H04N9/097
Filed: 1972-05-18
Abstract: 1337717 Colour television camera FERNSEH GmbH 18 May 1972 [19 May 1971] 23508/72 Heading H4F [Also in Division G2] A colour television camera has red, green and blue camera tubes 15, 12, 17, the incident light being split into its component colours by dichroic layers on two of a set of three prisms. The blue light is deflected by prism 25 to be parallel to the optical axis of the main camera objective lens, and is then passed through a lens assembly 19 and prism 27 to form an image on camera tube 17 which is smaller than those formed on camera tubes 12, 15. This arrangement leaves room in the camera casing to accommodate an electronic view-finder. Specifications 1,252,100 and 1,272,895 are referred to.
Patent GB-587257-A (GB)
Title: Improvements in acoustic echo-sounding
IPC: G10K11/30
Filed: 1944-11-27
Abstract: 587,257. Acoustic receivers and transmitters. MARCONI INTERNATIONAL MARINE COMMUNICATION CO., Ltd., and BEST, F. P. Nov. 27, 1944, No. 23638. [Class 118 (ii)] In an acoustic receiver or transmitter for echo - sounding in which the acoustic transformer (i.e. the source of acoustic energy or, in the case of the receiver, the pick-up device) is coupled to the transmitting medium, e.g. sea-water, by a liquid column and a plate interposed between the liquid and the transmitting medium, the materials of the liquid and plate are so chosen that their acoustic resistances are as nearly as practicable equal, and the liquid has a much higher acoustic resistance than water. As shown, the receiver or transmitter CA is welded to the steel plating SP of a ship's bottom and includes a mercury column Hg. A steel acoustic lens LE is supported in the mercury and the acoustic transformer is placed at the focal point thereof. Alternatively, a hole may be made in the ship and closed by a metal plate (e.g. steel or nickel), which may be made in the form of a lens or an integral number of half-wavelengths in thickness at the operating frequency. In another form, the ship's bottom may be locally thickened or shaped to form a lens.