baber/WOPTO huggingface dataset:
Patent GB-795955-A (GB)
Title: Improvements in or relating to radius grinding attachments for milling cutters or the like
IPC: B24B3/02
Filed: 1954-11-27
Abstract: 795,955. Radius-grinding. HOUGHTON, L. N. Feb. 27, 1956 [Nov. 27, 1954], No. 34437/54. Class 60. An attachment for a grinding machine to permit the radius grinding of a workpiece, such as a milling cutter or lathe tool by rocking the attachment about an axis 31 is provided with a detachable setting bar 28 which has one or more datum surfaces 30 offset from the axis 31 and, with the aid of a gauge block, enables the workpiece to be positioned precisely on the attachment at a spacing from the axis which is consistent with the required grinding of the workpiece when the attachment, without the setting bar, is mounted in the machine. The attachment comprises a base plate 10 pivoted at 13 between side arms 12 which at their upper ends are bored to receive coned bushes 16 for mounting them between the centres of a grinding machine ; screws 15 pass through slotted projections on the arms 12 for securing the latter and plate 10 at the desired relative inclination. The workpiece to be ground is releasably mounted on an arbor 19 slidable in a central slot 18 in the plate 10 and, if it is a milling cutter, is arranged to be retained between successive indexed positions by a spring finger 27 locatable in either of two holes 38, 39 in the plate. The bar 28 has two coaxial pins 29 whereby it may be mounted within the bores of the bushes 16 and, as shown, has a single datum surface 30 spaced from the axis 31. The first step in the setting of a milling cutter on the attachment is to swing the bar 28 through 90 degrees from the position shown so that its datum surface lies above the side face of the cutter mounted on the arbor 19, and then adjusting the relative inclination of the plate 10 and arms 12 until the side face of the cutter contacts a gauge block which is disposed against the surface 30 and is of the necessary thickness, taking into account the spacing of this surface from the axes 31, to produce the required radius ; the next step is to swing the bar 28 to the position shown and adjust the cutter along the slot 18 until its edge face contacts the gauge block on the surface 30. After removal of the bar 28, the attachment, with the cutter securely fixed thereto, is mounted between the centres of a grinding machine for rocking about the axis 31 in contact with a rotating grinding wheel ; the bushes 16 have countersunk recesses for engaging these centres. The grinding wheel rotates about an axis parallel to the axis 31 or at right-angles thereto depending upon whether a convex or concave radius is to be formed. If desired, the bar 28 may have two datum surfaces at right-angles to each other in order to avoid having to rotate it between the two setting steps. A lathe tool may be radiused by fixing it in a vice which is locked at the correct position in the slot 18.
Patent GB-1501579-A (GB)
Title: Envelope opening apparatus
IPC: B43M7/02
Filed: 1976-08-18
Abstract: 1501579 Opening envelopes STEPHENS INDUSTRIES Inc 18 Aug 1976 [29 Aug 1975] 34495/76 Heading B8C Envelope slitting apparatus comprises a pair of breaker blades 62, 64 movable rectilinearly along respective paths each of which includes a first leg extending from a first point outside of the envelope through a pre-cut edge of the envelope to a point inside the envelope and a second leg extending through a respective edge of the envelope, adjacent to the pre-cut edge, to burst that edge. Envelopes are withdrawn by a suction cup 46 from a sloping magazine 30 and fed downwardly by cyclically driven rollers 40 between guides 56, (58) on to a conveyer belt 24. The belt feeds each envelope against a stop 140 which is withdrawn as the blades move through the envelope. Each blade is carried by a pair of chains 66, 68, or 86, 88 to move along a rectangular loop. Suction cups 170, 172, 174 pull opposed sides of the envelope apart to permit entry of the blades. The slit envelope is fed by the belt 24 into one of a plurality of upwardly opening radial slots (286) in a continuously rotating member 282. Each slot has a widened mouth 290, is V-shaped in cross-section and has a radial vane 294 to separate opposed sides of the envelope. As the member 282 rotates an operator can remove the contents of the envelope. A high speed friction disc 310 expels an emptied envelope from its slot.
Patent GB-411386-A (GB)
Title: Improvements in kitchen cabinets and like articles of furniture
IPC: A47B77/10
Filed: 1933-12-07
Abstract: 411,386. Combination cupboards and tables. TRIUMPH CABINET WORKS, Ltd., and EDWARDS, J., 548, Holloway Road, London. Dec. 7, 1933, No. 34500. [Class 52 (i).] A kitchen cabinet or like cupboard-like article of furniture comprises an upper rotary cupboard section, the rear wall of which is fitted with a folding table. Fig. 2 shows a kitchen cabinet comprising the usual drawers b and cupboard c surmounted by a shell d containing a part e on a vertical central pivot at the top and a small ball-race at the bottom. The front of the part e is fitted with cupboard doors, its sides taper rearwards to enable it to rotate out of the shell d, and its rear wall is fitted with a table h, which may be turned down about the hinges h<1>, its outer end being then supported by hinged legs i secured in folded or unfolded position by a wooden spring bar j. Doors p may be fitted behind the folded-up table h to afford access to the cupboards in the part e.
Patent GB-162242-A (GB)
Title: Improvements in ball and float valves
IPC: F16K33/00
Filed: 1920-12-07
Abstract: 162,242. Cleverly, W. B., and Plant, J. H. Dec. 7, 1920. Addition to 113,236. Ball and float valves. -The bifurcated member b of the float lever described in the parent Specification is detachably connected to the stem of the lever, preferably, by screwing the stem c into a hole or socket in a boss d. This boss is formed integral with the fork b, or it may be attached thereto. The tips of the fork may be fitted with resilient pads f to prevent breakage of the float a when this is made of glass.
Patent GB-1463910-A (GB)
Title: Liquid level sensor
IPC: G01F23/292
Filed: 1975-08-21
Abstract: 1463910 Liquid level indication STANDARD TELEPHONES & CABLES Ltd 21 Aug 1975 34779/75 Heading G1H A method of sensing the interface between two fluids of differance refractive indices comprises passing light through an optical fibre 11 having a refractive index between that of the fluids at least part 13 of the fibre being unclad and positioned so that passage of at least part of the unclad portion through the interface changes the light level  detected at the exit end of the fibre. The fibre may be moveable to serve as a form of dipstick or fixed fibre portions may act as sensors of maximum and minimum levels. Both fluids may be liquid. One may be air. The fibre may be vibrated ultrasonically to prevent preferential adhesion of liquid to its unclad region. More than one may be used.
Patent GB-744228-A (GB)
Title: A new or improved device for sprinkling or irrigating fields or crops by means of artificial rain
IPC: B05B3/06
Filed: 1953-12-14
Abstract: 744,228. Rotary sprayers. FELICIANI, G. Dec. 14, 1953 [Dec. 12, 1952 ; Sept. 22, 1953; Oct. 2, 1953], No. 34795/53. Class 69 (3). A stationary water supply pipe is connected by a flexible tube 3 to a further tube 4 carrying an outlet nozzle 5 having an adjustable outlet, and the water jet from the nozzle strikes and drives a blade wheel 11. The nozzle and wheel are mounted on a supporting structure and the wheel drives, through gearing, the structure about the pipe 1. The nozzle and blade wheel are mounted on a support 7 which is adjustably pivoted at 8 to an arm 9 on a collar 10, thereby enabling the nozzle inclination to be varied. As the assembly rotates about the pip 1 the tube 4 rotates within a guide 18 on a further support 12. An arrangement for varying the size of the nozzle outlet as the nozzle is turned about the pipe 1 consists of a frusto-conical tube 19, Fig. 3, of a distortable material fixed within the tube 4 and shrouded with a set of metal blades. A member 22 screwed to the tube 4 has a conical bore which engages the outer wall of the tube 19 to constrict its outlet as the member 22 is screwed up. The member is secured to a toothed ring 25, Figs. 2 and 3, which is engaged by a pawl 26 on a rod 27. An adjustable screw 29 is mounted on an extension 28 of the rod 27, Fig. 1, and engages a cam track 30, so that as the nozzle rotates about the pipe the cam causes the pawl to engage or disengage the ring 25, thereby causing the member 22 to be screwed up on the tube. Alternatively, the member may be moved relative to a fixed tapering stud within the tube 4 to vary the liquid delivery. A further stud 35, Fig. 1, on the rod 27 interrupts the liquid jet to effect spraying over square areas. A flexible element 39 between the support 12 and the support 7 allows the former to be rocked relative to the latter, thereby effecting oscillation of the nozzle in vertical planes. For this purpose a threaded rod 43, Fig. 5, which has an adjustable stud 49 engaging the support 12 is connected to a collar 44 engaging a groove in an eccentric mounted on the main drive shaft 38, so that as the shaft rotates the nozzle is oscillated.
Patent GB-828754-A (GB)
Title: Pushbutton-operated overload switch
IPC: H01H73/56
Filed: 1957-11-07
Abstract: 828,754. Automatic circuit - breakers. ELLENBERGER & POENSGEN G.m.b.H. Nov. 7, 1957 [Dec. 14, 1956], No. 34798/57. Class 38 (5). In a trip-free push-button closed overload switch, an angular bridging contact 13, 14 is pivotable on projections 11 connected to a member 9 rigid with a control rod 7 of the pushbutton 4, the contact also being movable on the rod 7 axially thereof. When the button is depressed to close the switch, a part 10 on the rod engages a projection 15 on the contact part 14 and lowers the contact until one end engages under a latch 21 and the other end engages a contact 18. At the same time, contacts 54 carried by member 9 change over from contacts 23 to 24 in signalling circuits. The latch 21 forms a contact and is carried on a bimetal strip 22 heated by a coil 27 connected at one end to the latch 21 and at the other end to the coil 28 of an electromagnet having an armature 30 connected by a lever 33 to the upper end of the bimetal. The contacts may be released by deflection of the bimetal strip due to heating thereof, attraction of armature 30 or depression of a push-button 35 which bears on lever 33. The bimetal is adjustable by a conical-pointed screw 37. When the switch has been tripped, the contacts may be moved to an intermediate position in which all of the circuits are broken so as to indicate that the tripping has been noticed. This position is reached by pressing button 4 only until the end of contact arm 13 engages under a second latch 53 on the bimetal, Fig. 4. The electromagnet may be omitted, and the parts are arranged in a two-part housing.
Patent GB-206401-A (GB)
Title: Improvements in apparatus for use in playing a game of skill
IPC: A63D13/00
Filed: 1922-12-22
Abstract: 206,401. Alderson, E. L. Dec. 22, 1922. Table games; scoring apparatus. - Apparatus for playing a game of skill comprises a track along which balls may be rolled or projected, the floor of the track twisting into a curved wall from which the balls are deflected laterally towards a series of pockets to which are allocated numerical values, the score arising from a series of balls entering a pocket or pockets being totalized and indicated upon a scoring board. As shown, the floor of the track 2 converges and twists into a vertical position at one end 2<c> so that a ball 1 thrown along the track by hand or projected by a spring gun is deflected towards pockets 5 bearing numerical scoring values. The balls pass through the pockets, or through a gap 5<a>, to a channel leading to the front of the track. In running through the pockets the balls pass over electric contact makers connected by wiring to the scoring board 10 in usual manner so that as each ball passes through a pocket the scoring value of the pocket is indicated at an aperture 12, and the total score is indicated at one of the apertures 11, the particular aperture depending on the number of balls which has previously passed through the pockets.
Patent GB-1474176-A (GB)
Title: Electrical indication of focus in television systems
IPC: H04N5/232
Filed: 1974-07-22
Abstract: 1474176 Television; cathode-ray tube circuits KODAK Ltd 22 July 1974 [23 July 1973] 34925/73 Headings H4T and H4F A signal indicative of the focus of a television signal generator is obtained by applying the video signal to a superheterodyne frequency changer 20 whose output is fed to a tuned detector 28 which is tuned to a frequency other than a harmonic of the line frequency. The detected signal, which is maximum when the focus of the television signal generator is optimum, may be displayed on a meter 32 or supplied to a servo-mechanism to control eletronically or optically the focus of the generator, e.g. camera or telecine scanner. Preferably the detector has a centre frequency which is the average of two successive harmonics of the line frequency, the detector response to these two harmonics being low.
Patent GB-1113830-A (GB)
Title: Pressure ratio transducer
IPC: G01L11/00
Filed: 1966-08-04
Abstract: 1, 113, 830. Measuring a pressure ratio, electrically. UNITED AIRCRAFT CORPORATION. Aug.4, 1966 [Sept. 9, 1965], No.34936/66. Heading G1N. In a pressure ratio transducer four pressures P 1 -P 4  are applied to four bellows 64, 66, 68, 70 (Fig. 1) which in turn apply, through rods 82, 106, 90, 98 respectively, four forces F1-F4 (Fig. 6) at a point A (rod 62, Fig. 1) on a lever 46 pivoted at a point B on a movable support yoke 34, and the tangential component R sin # of the resultant force R displaces the lever, whereupon a contact on the end of the lever, and situated between two contacts on the support, engages one or other of the contacts and causes a servomotor 132 to rotate and turn the support about a fixed axis thereby moving the lever pivot until the R sin # component is reduced to zero and the resultant force R acts along a line passing through the lever pivot and the point of application of the force. The support yoke 34 longitudinal axis is then at an angle # to the axis of the bellows rods 82 and 90 (i. e. the x axis) and this angle is a measure of the pressure ratio, where  P 4 -P 2 /P 3 -P 1  = tan #. The lever 46 comprises a rectangular frame having sides 48, 52, 54, 50 pivoted on shafts 56 journalled in the top 36 and bottom 42 of the yoke support 34 which is also rectangular. The yoke is angularly movable about stub shafts 32 projecting from a cylindrical casing 12, to the side walls of which the bellows are fixed. In the null balanced condition the yoke is in alignment with the lever and the stub shafts 32 are coaxial with the lever rod 62 to which the forces are applied, and contact 122 on the lever is mid-way between contacts 120, 124. The servomotor 132 turns the yoke in one direction or another via worm and pinion gearing and a rod 152, which rides in a slot in the yoke bottom and moves in a line parallel to the y axis the distance D (Fig. 1) remaining constant and distance L changing so that tan # = L/D factor is eliminated and the pressure ratio is thus directly proportional to the amount of movement of the yoke by the rod 152. The servomotor shaft is coupled to a transducer 164 (not described) which produces an electrical output corresponding to the amount of angular rotation of the servomotor shaft to move the rod and hence to the angular displacement # of the yoke. The positive spring rate of the bellows is compensated by a negative spring rate provided by four permanent magnets fixed to the casing and co-operative with four buttons of paramagnetic material attached to the rod 62.
Patent GB-1193677-A (GB)
Title: Improvements in and relating to Lubricating Devices
IPC: F16N7/36
Filed: 1967-07-31
Abstract: 1,193,677. Lubricating; toothed gearing. USM CORP. 31 July, 1967 [1 Aug., 1966], No. 35051/67. Headings F2A and F2Q. A lubricating device comprises coaxial annular pump components 34, 36 rotating with a rotory member 28 of a motion transmitting mechanism in a sealed casing 2, 4, the components each having tapering portions. Component 34 has a sleeve 39 with tapered flutings 42, and component 36 has tapered lips 46. When shafts 6, 8 are substantially horizontal the parts surrounding input shaft 6 carrying cam 28 are splash lubricated. When the shaft 6 is vertical and uppermost, and the lower end of sleeve 39 is immersed, lubricant is driven upward within the sleeve through openings in cam 28 to bearings 12, 30 and returns through flow control holes 55. When output shaft 8 is uppermost lubricant is driven up through component 36, cam 28 and component 34 to overflow into reservoir 53 and passes through flow control holes in wall 56 to bearings 30. The motion transmission mechanism includes a flexspline 24 to which the ellipsoidal shape of the cam 28 is transferred through bearings 30. The flexspline has teeth engageable with teeth on a circular spine 22 on the casing but fewer in number. Rotation of cam 28 causes rotation of the flexspline with spline 22 and thus rotation of attached shaft 8.
Patent GB-806554-A (GB)
Title: Improvements in the treatment of fibrous materials in the production of cellulose or semi-cellulose
IPC: D21C1/10
Filed: 1956-11-16
Abstract: <PICT:0806554/IV (a)/1> <PICT:0806554/IV (a)/2> <PICT:0806554/IV (a)/3> In the production of cellulose or hemicellulose, fibrous materials are impregnated with a digesting liquor in vacuo and, after being freed from excess liquor, are heated and digested in an atmosphere of steam.  As shown in Fig. 1, a chamber 1 connected to vacuum pump 6 has two downwardly-extending pipes 2, 3 dipping into containers 4, 5 respectively, for the digesting liquor. Fibrous material fed to the apparatus through funnel 8, pipe 7, and chamber 9 rises up the liquid column 17 and falls to the top of liquid column 18, whence it is transferred by screw conveyer 10 to container 5, to be subsequently removed by conveyer belt 25, on which the excess liquor drains away.  Addition of fresh liquor to column 17 assists the elevation of fibrous material, and conveyers may be provided in pipes 2 and 7, for the same purpose.  In Fig. 2 a conveyer with rotating stirrers 29 moves material discharged from pipe 3 to conveyers 26, 27 positioned to deal with floating and sinking material.  Strainer 30 prevents floating material from surfacing. Fig. 3 shows a suitable digester, wherein fibrous material is conveyed to the top of pressure chamber 31 and introduced from funnel 33 by rotary feeder 32 driven by motor 34. Steam under pressure is injected through conduit 35, and worm 37 driven by motor 38, and stirrer 40 driven by motor 41, discharge the cooked product through opening 39.
Patent GB-366632-A (GB)
Title: Improvements in or relating to jacking devices for motor cars and like vehicles
IPC: B60S9/08
Filed: 1930-11-21
Abstract: 366,632. Collision guards for vehicles. CAMPBELL, SIR M., 6, Old Bond Street, and MAINA, J., 8, Grosvenor Gardens, both in London. Nov. 21, 1930, No. 35145. [Class 103 (ii).] Jacking apparatus for motor vehicles is housed in a horizontal tubular member 1 secured to or forming part of the chassis and which may constitute or carry a bumper bar or fender. The member 1 may be secured to the dumb-irons 23 of the vehicle by means of brackets 24 and a collar bracket 18 on the member may carry a fender 20 provided with a solid or pneumatic cushion 22.
Patent GB-810152-A (GB)
Title: Improvements relating to vari-focal optical systems
IPC: G02B15/14
Filed: 1956-11-16
Abstract: 810,152. Optical systems. OPTISCHE INDUSTRIE. DE OUDE DELFT N. V. Nov. 16, 1956 [Nov. 16, 1955; March 16, 1956], No. 35165/56. Class 97(1) In a variable focal length system for use as an objective and comprising a positive and a negative component movable along the optical axis, movement is effected by an adjusting means which imparts axial displacements to the positive and negative components proportional to sin # and (1-cos#) respectively, # being an angle determined by the position of the adjusting means. The invention may be applied to systems formed of a variable magnification telescope placed before a normal objective or to variable focal length objectives. The theoretical basis of the invention is described in the Specification. In the arrangement shown in Fig. 4 the adjusting means comprises a right-angled lever pivoted at 5 on the axis of positive and negative lenses 2, 9. Positive lens 2 is connected by a pivoted link 3 to one arm 4 of the lever while the mount 8 of the negative lens has a slot 7 perpendicular to the optical axis engaged by a pin 6 on the end of the other arm 4a of the lever. Rotation of the lever through an angle # produces the required axial movements of the lenses. In the modification shown in Fig. 5 the lenses 12, 14 have rollers 17, 18 sliding in an axial slot 24 in a tube 10. The roller 17 engages the face 25 of a tubular member 10a which face is formed by intersection of the member 10a with an inclined plane. The roller 18 engages the face 20 of the member 10a formed by the intersection thereof with a plane perpendicular to the first plane. The rollers are pressed against the faces 19, 20 by a spring 26 so that rotation of the member 10a about the optical axis through an angle # produces the desired movement of the lenses. In a further extension of the range the movement of the positive lens may be made proportional to tan # by suitable shaping 25 of the surface 19. In the third modification shown in Fig. 8 the pivoted lever 44 has a roller 45 engaging a face 52 on a member 35 carried by a tube 34 supporting the negative lens 37 and sliding along a rod 30, and also has a roller 48 engaging a surface 54 on a member 41 fixed to a tube 38 slidable along a rod 31 and carrying the positive lens 40. In the position shown anticlockwise rotation of the lever produces movement of the positive and negative components proportional respectively. to sin # and (1-cos#). Then the arm 44 becomes vertical the surfaces 55 thereof is engaged by a roller 49 on the member 41 so that further rotation of the lever gives a movement of the positive lens 40 proportional to tan #. Two positive and two negative lenses may be connected together respectively for simultaneous movement.
Patent GB-861394-A (GB)
Title: Purifying white spirit
Inventor: POPIEL JAN MICHAL
IPC: C10G21/08
Filed: 1958-11-03
Abstract: <PICT:0861394/III/1> White spirit of improved odour is obtained by treating the spirit, which has previously been washed with a solution of caustic soda, with 5-20%, preferably 10-15%, by volume of a solution containing 0.1-4.0, preferably 0.1-1.0 gm. moles of copper ammonium acetate per litre.  The preliminary treatment of the white spirit is preferably with 5-25% by volume of a caustic soda solution containing 2-5% by weight of caustic soda.  As shown in the Figure, white spirit from hydrofiner 1 is fed to tank 2 where it is mixed with caustic soda solution, then to settling tank 3 where spent caustic soda is run off, before passing to tank 5 where the spirit is mixed with ammoniacal copper acetate; the treated spirit passes to settling tank 6 where spent acetate is run off, and then to tank 8 where it is washed with water before being removed by line 10.  To prevent deterioration, the treated spirit may contain a little antioxidant, such as 2 : 6-ditert-butyl-cresol.
Patent GB-727880-A (GB)
Title: Improvements in and relating to thermostatic devices
IPC: H01H37/32
Filed: 1953-12-17
Abstract: 727,880. Temperature-responsive actuating- elements. GENERAL ELECTRIC CO. Dec. 17, 1953 [Dec. 17, 1952], No. 35199/53. Class 64 (2). [Also in Group XXXVII] A thermostatic device, particularly for use in alarm devices for freezing chambers, comprises a closed chamber 14 which has an expansible wall 22 and is filled with an aqueous solution of potassium chromate which expands on freezing. The chromate and water are approximately in the proportions of a eutectic mixture. The solution may contain a nucleating agent, e.g. silver iodide crystals, graphite, or clays.