baber/WOPTO huggingface dataset:
Patent GB-955740-A (GB)
Title: Jig saw attachment for portable drill
IPC: B23D49/16
Filed: 1961-09-12
Abstract: 955,740. Sawing. SUNBEAM CORPORATION. Sept. 12, 1961 [Dec. 1, 1960], No. 32769/61. Heading B5L. An attachment for converting a portable pistoltype power drill into a jigsaw comprises a guide shoe 42, a socket 52a in which the drill 11 is clamped by a screw 56, a housing 15 containing a crank drive for the saw and a handle 10 provided with a trigger 13 for operating the motor trigger 14 through levers 91, 97. A crank member 73 is splined on a nut 71 on the drill spindle 57 and drives a connecting-rod 75 which has a pin 76 guided in a block 80 and projecting into a hollow slide 22 to which the saw 21 is secured. The slide 22 fits in a bushing 23 and a spherical bearing 24 and is provided with a cap 35 so that it acts as a piston to force air through a passage 40 and nozzle 41 for the clearance of sawdust. The bushing 23 and bearing 24 are loose fits in the housing but are held firmly by a leaf-spring extending between them; the bushing 52 of the socket 52a is similarly loose but is held by a rubber pressure plug. An adjustable fence 43 on a calibrated rod 43b is provided. The entire attachment may consist of two cast halves secured together or the guide shoe and drill cradle may be formed from sheet metal and have a central strengthening groove which assists in the clearance of sawdust.
Patent GB-635796-A (GB)
Title: The impregnation of porous articles with carbon
IPC: C04B41/50
Filed: 1947-12-12
Abstract: At least the surface pores of a solid article such as a carbon article, are filled with carbon by subjecting the article to sub-atmospheric pressure, immersing the wholly or partially evacuated article in a liquid mixture of furfural and concentrated sulphuric acid, at or above atmospheric pressure, and heating the impregnated article slowly to, say, 200 DEG  C.  The heating may be continued, however, to at least 350 DEG  C. by providing a non-oxidizing atmosphere for that part of the heating above 200 DEG  C.  The proportion by volume of furfural to concentrated sulphuric acid should be between 10 and 14 to 1 and the mixture should be maintained at or below 0 DEG  C.  The porous article may be placed in a gas-tight container which is thereafter evacuated to 0.5 mm. pressure, then the furfural/acid mixture is run in from a vessel situated above; the container and vessel are jacketed with a refrigerating liquid.  The impregnated article may be heated in an electric oven.
Patent GB-1193387-A (GB)
Title: Improved Copying Lathe
Inventor: JEANNERET JULES LOUIS
IPC: B23Q35/08
Filed: 1968-07-10
Abstract: 1,193,387. Copy-turning. J. L. JEANNERET. 10 July, 1968 [12 July, 1967], No. 32896/68. Heading B3T. A copying lathe has a first copying slide 7 mounted at an angle to the workpiece axis 4 and arranged to move under the control of a feeler 8 of e.g. an hydraulic copying control device, and a second slide 12 driven from the first so as to make movements which are a mirror image across the workpiece axis of those of the first slide 7, a release device being provided whereby the second slide can be retracted from its working position. Both slides are mounted on a longitudinally movable carriage 5 and drive from the first to the second slide is effected by means of a shaft or rod.20 and steel band 26 attached thereto and to the slide 12. Alternatively the shaft 20 may co-operate with a rocker arm (Figs. 2, 9, not shown). The slide 12 is urged in a direction to keep the band 26 taut by a fluid pressurized cylinder 30 and piston 32. The tool 16 of the second slide 12 is carried by a toolholder 17 on a carriage 50 the latter being movable in a direction normal to the workpiece axis on ways 51 by a fluid operated cylinder unit 52. This radial movement effected by the unit 52 is accompanied by slight longitudinal movement as a roller 64 mounts a stepped portion 62 on the toolholder 17 which is slidable against the pressure of a spring 65 on ways 61. Micrometer screw heads 58, 72 serve to adjust finely the position of the tool 16 in the radial and longitudinal directions. In alternative embodiments the stepped portion 62 is replaced by an inclined portion (73), (Fig. 4, not shown) or (Figs. 9, 10, not shown) the ways (51) on which the carriage (50) is mounted are slightly inclined to the perpendicular to the workpiece axis so as to combine the radial and longitudinal retractive motions of the tool 16. Both tools 10 and 16 may be used simultaneously in which case the cut may be divided between the tools either radially, i.e. as regards depth of cut or in the axial direction. Alternatively the slides 7, 12 may carry respectively a roughing and finishing tool, the slide release device being utilized for slide 12 so that initially only the roughing tool is used and thereafter the finishing tool.
Patent GB-639688-A (GB)
Title: Improvements in or relating to frameworks for typewriters
IPC: B41J29/02
Filed: 1947-12-15
Abstract: 639,688. Typewriters. PAILLARD SOC. ANON. Dec. 15, 1947, No. 32977. Convention date, Oct. 10. [Class 100 (iv)] A framework for a typewriter is formed by a pair of vertical sheet metal plates 10, each formed along its length with a portion 11 bent substantially at a right angle by which it is secured to a pair of transverse channel-shaped members 12 open towards the bottom and serving as a seating for feet 14 for the machine. The feet 14 are of soft rubber and rectangular in plan and are located at opposite ends of the members 12 where they are held between two bent down side edges 19 and an end edge 19A of the members 12 by a screw and washer 16, 15.
Patent GB-657059-A (GB)
Title: Improvements in or relating to the construction of shirts
IPC: A41F5/00
Filed: 1947-12-15
Abstract: 657,059. Shirts &c. WHITE, J. A. Dec. 15, 1947. No. 33008. [Class 141] In a shirt of the kind which is combined with trouser suspension means, such means comprise a pair of substantially triangular yoke pieces a, b made from the same material as the shirt and sewn together at c to form divergent strap portions d and having attached thereto a rear strap h. The yokes are secured to the in side of the shirt by sewing thereto beneath the collar band at f and across the shoulders at s. The straps are formed into loops of adjustable length by means of buttons and holes p, q or other fastening means and support on the inside of the shirt brace tabs l which pass out through reinforced slots m.
Patent GB-931685-A (GB)
Title: Improved process for producing gamma-butyrolactone
IPC: C07D315/00
Filed: 1961-09-18
Abstract: Gamma-butyrolactone is produced by contacting maleic anhydride, succinic anhydride, or an ester of maleic, succinic or fumaric acid, in vapour phase, with hydrogen at 100 DEG C. to 400 DEG C. in the presence of a copper chromite catalyst at a pressure below five atmospheres.  The catalyst may consist of copper oxide and chromium oxide in a ratio between 10:1 and 1:1, and may be reduced with hydrogen before use at a temperature below 350 degrees. When maleic or succinic anhydride is used it may be vapourized from a solution in an organic solvent.  Succinic ester or anhydride is separated from the gamma-butyrolactone and recycled. In examples gamma-butyrolactone is obtained from maleic anhydride, diethyl maleate, succinic anhydride, diethyl fumarate and dipropyl succinate.
Patent GB-1247470-A (GB)
Title: Improvements relating to determining the distribution of a component in a mixture
IPC: G01N15/02
Filed: 1970-07-09
Abstract: 1, 247, 470. Determining the distribution of small particles. COMPAGNIE INDUSTRIELLE DES LASERS. July 9, 1970 [July 11, 1969], No.33359/70. Heading G1A. A method of determining by using diffraction patterns the distribution as a function of their radius of particles in a mixture of particles by #= # determining the fraction Ni/ # Ni of particles #=# of radius ai for n values of i, comprising the steps of illuminating a sample of the mixture 1 with a monochromatic light beam 5 so as to form a diffraction pattern in the focal plane 6 of an optical system 4, determining the luminous flux Fk in each of n sucessive rings of the diffraction pattern, and sowing for the n values of Ni the set of n linear equations in n unknowns obtained with the values Fk and of the following form: wherein: - n is an arbitary integer i is a number taking the sucessive integral values from 1 to n k is another number taking the sucessive integral values from 1 to n Fk is the luminous flux or the K<th> ring of a circular diffraction pattern. d1, is the internal diameter of that K<th> ring and d2K is the external diameter. ai is the radius of a particle. # is the wavelength of the monochromatic light beam; f is the focal length of the optical system J0, J1 zero and first order Bessel function respectively. In one embodiment the diffraction pattern is formed on a screen and the luminous flux passing through each ring of the diffraction pattern is measured by employing a succession of screens, set one at a time in the focal plane, each screen having an annular aperture with internal and external diameters equal to one of the n daimeter pairs (d1k, d2k) and the luminous flux passing through is measured by a photo-sensitive element 7 and its value is stored in a calculator 8 which subsequently solves the equations. In a further embodiment the diffraction pattern is explored with a photo-sensitive element of a small but known effective area.
Patent GB-323861-A (GB)
Title: Improvements relating to anti-dazzle screens or light shields for use upon motor cars and the like
IPC: B60J3/02
Filed: 1928-11-14
Abstract: 323,861. John, A. S. Nov. 14, 1928. No Patent granted (Sealing fee not paid). Anti-dazzle screens.-An anti-dazzle screen 1 for the use of vehicle drivers is mounted for rotation about the longitudinal axis of a rod 6 which is normally fixed in a vertical position but is capable of pivoting about a bolt 12a at its lower end and of being clamped at any selected inclination. As shown in Fig. 1, the vertical rod is formed of two telescoping portions 6, 7, and the screen is mounted on the upper portion 6 by means of apertured arms 4, 5, the upper of which at its pivoted end has a serrated face 18 co-operating with serrations on a fixed washer 17 and with a nut 19 and spring disc 20 to form a self-retaining hinge. A similar hinge is provided at the lower end of the rod 7 by forming thereon an annulus 12 with a serrated face engaging corresponding serrations on a disc or plate 13 attached to the dashboard or like support on the vehicle. If desired, the rod 7 may be pin-jointed at 11 for folding purposes. In a modification, the rod 7 is adapted to be pivotally mounted on the steering column, while in a further modification, Fig. 3, the arms 4 and 5 are replaced by a single swinging arm 25, on which the anti-dazzle screen is slidable and rotatable, being clamped in position by a set screw 27 passing through a sleeve 26. The shape of the anti-dazzle screen is preferably that of a semi-circle with an inclined lower edge, or, according to the Provisional Specification it may be that of a right-angled triangle.
Patent GB-804180-A (GB)
Title: Improvements in or relating to landing-gear for aircraft
IPC: B64C25/20
Filed: 1955-11-23
Abstract: 804,180. Aircraft undercarriages. SOC. D'INVENTIONS AERONAUTIQUES ET MECANIQUES, S.I.A.M. Nov. 23, 1955 [Dec. 27, 1954], No. 33638/55. Class 4. An aircraft landing gear bracing strut comprises two arms, pivoted to the aircraft and the landing gear, respectively, and also pivoted together about an axis lying outside the plane containing the pivotal axes of the two arms to the aircraft and landing gear when the latter is extended, wherein one of the arms constitutes the body of a fluid operated jack, of which the piston rod is coupled to the other arm through a connecting link. In Fig. 1, the wheel strut 1 is pivoted to an aircraft wing at C, and braced by a strut 3 breakable at D and pivoted to the wing at A and to the strut 1 at B. In Fig. 2, the strut 3 comprises two arms 4, 5 hinged on a pin 6. The arm 4 forms a cylinder in which works a piston 12, the rod 13 of which is universally jointed to a coupling rod 15 pivoted to the arm 5 at 16. The universal joint runs on a roller 17 in a guide 18 formed in the arm 4. Admission of fluid under pressure to port 21 and connection of port 22 exhaust breaks and folds the strut, retracting the undercarriage, and vice versa. An abutment 19 on arm 5 abuts a strengthened portion 20 on arm 4 when the strut is extended. The cylinder is formed with members 23, and the piston with a sliding portion 24 as in Specification 527,225 to form a down-lock. When the strut is fully opened, the piston actuates a member 26 to give an indication to the pilot. Specification 551,673 also is referred to.
Patent GB-300915-A (GB)
Title: Improvements in and relating to electrically wound clocks
IPC: G04C1/06
Filed: 1928-11-19
Abstract: 300,915. British Thomson-Houston Co., Ltd., (Assignees of Hall, C. I.). Nov. 18, 1927, [Convention date]. Alternating - current induction machines.- Winding mechanism for maintaining the tension of a mainspring at a certain predetermined value includes an alternating-current induction motor of the shading coil type, the shaft of the rotating disc moving axially to control the amount of wind transmitted to the mainspring. This disc 11 rotates between poles 29, 30, the winding 31 being energized by alternating current; 32 and 33 are shading coils. The shaft 12 of disc 11 winds up the inner end of mainspring 20 through worm 13 and gearing 14 - - 19; the barrel 21 to which the other end of the spring is attached driving the hands 27, 27<1> controlled by the escapement 25. When the disc 11 rotates in the direction of the arrow thereon, the worm 13 winds up the spring 20, but the counter torque of the latter back through the gearing 19 - - 14 tends to thrust the shaft 12 axially in the direction 13<1>. Normally this is resisted by a ball 36 and spring 37, but when the spring 20 has been wound to the predetermined limit the counter torque is sufficient to move the shaft 12 axially so that the disc 11 rubs against the pole face 39 and is braked. This pole face is covered with paper. The disc 11 is thus alternately braked and freed to keep the spring 20 at the predetermined tension within small limits. The spring 37 is adjustable by means of cap 38, and the pole 30 may be adjusted rotatively by releasing nut 42 to vary the motor speed. Specification 10100/13, [Class 139, Watches &c.], is referred to. The Specification as open to inspection under Sect. 91 (3) (a) describes also a modification, Fig. 3 (Cancelled), the counter torque of the main-spring tends to move the shaft 12 upwards in the opposite direction (the thread of the worm 13 being reversed) against the weight of the parts, the spring 37 being dispensed with. In this case the shaft 12 is driven by a direct current motor 40 through gearing 41, 11<1>, the gear 11<1> taking the place of the disc 11 of Figs. 1 and 2 and being brought against a braking surface 39<1>. This subject-matter does not appear in the Specification as accepted.
Patent GB-422589-A (GB)
Title: Improvements in or relating to engine turning-gear
IPC: F02N15/02
Filed: 1933-12-04
Abstract: 422,589. Turning gear. CARMICHAEL, E., Ivy Bank, Moore, near Warrington. Dec. 4, 1933, No. 33977. [Class 7 (v)] In an electric starter in which a worm d splined on the shaft b of the starting-motor a drives a worm wheel i having a one-way connection with the engine shaft j, coil springs e, f are confined between the worm and collars g, h, on the shaft, in order to cushion the axial movement of the worm when the starter is taking up its load or in case of a back-fire. As shown, the worm wheel i carries a ratchet block k engaging pawls m pivoted on a disc n fast on the engine shaft. When the engine starts, the pawls are thrown clear of the ratchet block by centrifugal action; the outward movement is limited by pins ml. In a modification, the pawls m are replaced by pivoted wedge members urged by springs into engagement with an annular groove in a collar on the engine shaft.
Patent GB-382113-A (GB)
Title: A process for mixing non-homogeneous finely divided solid materials
IPC: B01F33/40
Filed: 1931-12-08
Abstract: 382,113. Mixing. TRIGGS, W. W., 57, Lincoln's Inn Fields, London.-(International Precipitation Co. ; 1016, West 9th Street, Los Angeles, U.S.A.) Dec. 8, 1931, No. 34011. [Class 86.] Finely divided solid materials, such as finely ground cement from different batches, are intimately mixed, in a substantially dry state, in a closed chamber by first ejecting gas, e.g. air, at a relatively small distance beneath the surface of the materials, and progressively increasing the depth of injection until the bottom of the container is reached, or nearly reached, the injection being maintained at this depth until mixing is complete. Alternatively, the increase in the depth of injection may be attained by maintaining the level of injection constant and adding materials to raise the surface thereof during the injection. Fig. 7 shows an apparatus in which a pressure, e.g. 100 lbs. per square inch, is maintained to utilize the mobility imparted to fine powders by high gas pressures. The circuit is closed to reduce the cost of compression. The materials are introduced into the container 25 through a door 26<1> and discharged when mixed through a door 27<1> which is arranged somewhat above the bottom of the container, since the lowest layer of material does not become intimately mixed and its discharge is undesirable. Injectors 28 are connected to a supply pipe 30 and are arranged at different levels. The air, and entrained particles, pass through a valve 32 to a filtering, precipitating or like cleaning device 33 from whence the particles are returned to the container 25. The pressure is maintained by a compresser 36 and the air is circulated by a pump 35. In a modification, the container is open at its upper end, through a filter, to the atmosphere, and the feed and discharge of materials are effected through gate controlled shoots. In a further modification, the container has a hopper-like bottom, with two sets of injectors, leading to a discharge worm. An apparatus is described for demonstrating the mixing effect of a single jet at the bottom of column of materials. The container has sample-withdrawing plugged openings at different levels, and the open top of the container is covered by a filtering-screen.
Patent GB-852665-A (GB)
Title: Character recognition equipment
IPC: G06V30/144
Filed: 1958-10-24
Abstract: 852,665. Automatic character reading. STANDARD TELEPHONES & CABLES Ltd. Oct. 24, 1958 [Oct. 26, 1957], No. 34087/58. Class 106 (1). Character recognition is effected by passing a spot of light along a predetermined series of tracks so arranged that any track may intersect the character only once, and by providing a light responsive means giving an electrical output signal indicative of any such intersections. Fig. 1 shows an example of such tracks a to i. The light spot is produced by a cathode-ray tube R (Fig. 2) connected to a counter Z by lines La, Lb ... the number of which equals the number of tracks and which are marked in turn by the counter, through circuits Na, Nb ... producing the deflection plate voltages necessary to produce a corresponding track a, b ... A photo-electric transducer P is connected through a pulse limiter C and low-pass filter F to gates Ka, Kb ... which are also connected to the lines La, Lb ... Stores Sa, Sb ... are associated with gates Ka, Kb ... respectively and coincidence circuits X1 to Xn are connected to the stores S. Intersection of a scan track with the character causes the transducer to emit a pulse which is gated to the store corresponding to the particular scan track. The number of coincidence circuits equals the number of possible characters and at the conclusion of a reading operation only one circuit is energized by any one combination of stores containing pulses, so that each circuit represents one character. The circuits N may be replaced by a single circuit or by fewer circuits than the number of scan tracks, when means are provided to suppress the scanning beam when changing from one track to another.
Patent GB-1413788-A (GB)
Title: Control unit for supplying fluid medium to a dental instrument
IPC: A61C1/02
Filed: 1974-08-01
Abstract: 1413788 Valves KALTENBACH & VOIGT 1 Aug 1974 [6 Aug 1973] 34093/74 Heading F2V A control unit comprises a control block 2 for supplying fluid to a dental instrument, a further block 1 secured to block 2, passages 6, 7, 8, passing through the blocks for supplying fluid, a diaphragm 12 disposed in sealing relationship between the blocks, a control chamber 13 in block 1 adapted to supply pressure to control movement of the diaphragm, and a valve 17 in block 2, responsive to movement of the diaphragm so as to control the supply of fluid through the passages. Further blocks 3, 4 are secured to blocks 1, 2, and passages 6, 7, 8, carry air for driving the dental instruments, cooling water for a spray, and cooling air for cooling the instrument motors respectively. Diaphragms are provided between each pair of blocks, and passage discharge branches 6<SP>111</SP>, 7<SP>111</SP>, 8<SP>111</SP> are provided in each block 1, 2. Air is supplied to chamber 13 in blocks 4, 1, from a source 26, Fig. 4, through a passage 14. In operation, a dental instrument is lifted from a holder 28 so that a valve 27 is opened and chambers 13 are relieved of pressure. Air flows through passage 6, lifts a spring-urged valve 17 from its seat 16 and flows into passage 6<SP>111</SP>, where it moves a piston 24 to operate a switch 23 which controls the dental instrument. The passages 7<SP>111</SP>, 8<SP>111</SP> are similarly supplied with fluid pressure. When the instrument is placed on to holder 28, valve 27 is closed and air is supplied to chambers 13 and acts on diaphragms 12 so as to close valves 17 in the passages 61, 7<SP>1</SP>, 8<SP>1</SP>.