baber/WOPTO huggingface dataset:
Patent GB-323520-A (GB)
Title: Improvements in piezo-electric devices
IPC: H04R17/00
Filed: 1928-07-06
Abstract: 323,520. Russell, E. W. C., (Sawyer, C. B.). July 6, 1928. Piezo-etectric instruments. - Piezo-electric crystals, preferably of Rochelle salt, are cut in the form of a slab or bar with opposed faces parallel to the plane of the major crystalline axes, and with their greatest dimension (the diagonal of a slab or the length of a bar) at about 45‹ to a major axis, so that when an electrostatic field is applied through the slab or bar, it tends to expand or to contract in the direction of its greatest dimension. The invention consists in various mountings for such crystal sections to enable them to be used for acoustic and like purposes. Fig. 3 shows the manner in which a slab 3 may be cut from a Rochelle salt crystal 1 of the kind having porous end regions 2. The thickness of the slab lies parallel to the minor axis a a, and the edges of its plane faces are parallel with the two major axes. Fig. 5 indicates three slabs 6, 7, 8 cut from a crystal of different type. Fig. 11 shows a square slab A - - D, which when secured at its lower edge A D and subjected to electrostatic strain across the thickness of the slab, expands along its diagonal AC, causing the slab to assume the shape A B<1> C' D. The motion of any point in the upper edge BC is greater than the expansion of the diagonal, so that comparatively large amplitudes of movement can be imparted in the direction BC to a recording-stylus or other member attached to that edge. In the loud-speaker shown in Fig. 10, a rod 22 attached to a diaphragm 20 is clamped to the edge 14 of the crystal 9, the opposite edge 13 being held by adhesive to a heavy base 15. The driving voltage is applied to tin-foil or like electrodes 10. When the bar form of crystal is employed, it is cut with the length of the bar lying in the direction of the diagonal of the slab, so that when electrostatic strain is applied it tends to expand or contract in the direction of its length. Fig. 19 shows a microphone or telephone instrument embodying the bar type of crystal 48. The diaphragm 43 is attached to a socket 42 which is secured by adhesive to the free end of the crystal 48, the opposite end of which is secured to a heavy support 40. The electrodes 49 are connected by leads 45 to terminals on the casing 39. The longitudinal faces of the crystal bar may be of rectangular shape, or they may taper towards the diaphragm end. The capacitative impedance of the instrument may be designed to suit the circuit in which it is used by adjustment of the electrode area and the thickness of the crystal. Cone diaphragms may be attached to both ends of the crystal bar. The crystal vibrations may be amplified by means of a lever 56, Fig. 21, anchored at one end 57 and carrying a stylus 63 or a diaphragm at the other end, the free end of the crystal bar 58 being secured to an intermediate point 60 of the lever. The lever 56 may be pivoted between a fixed knife edge and a screw-adjusted and spring-supported member. Specification 294,174, [Class 40 (v), Wireless signalling &c.], is referred to.
Patent GB-1046263-A (GB)
Title: Wire cloth and wire belts for use in paper making machines and method of making such wire cloth and wire belts
IPC: C22C9/00
Filed: 1963-05-17
Abstract: <PICT:1046263/C6-C7/1> A method of making wire cloth and woven wire belts for use in paper making machines comprises forming the cloth or belt from interwoven warp and weft wires of age-hardenable wire alloy in the solution treated state, and then subjecting cloth or belt to an age-hardening operation for such a time and temperature as to cause a required hardening.  Suitable alloys suggested, and their required aging treatments, are as follows:-"Berylco 25" (Registered Trade Mark) comprises .Beryllium.1.80-2.25% .Cobalt.0.18-0.30% .Copper.Balance Aging treatment required:- from 1/4 -3 hours at a temperature between 475 DEG F and 650 DEG F.  To obtain homogeneous age-hardening the woven cloth may be solution treated prior to aging, this being effected by holding the cloth at about 1475 DEG F. for about 15 minutes, and then water-quenching.  Elgiloy (Registered Trade Mark) comprises:- .Cobalt.40% .Chromium.20% .Nickel.15% .Molybdenum.7% .Manganese.2% .Carbon.0.15% .Beryllium.0.04% .Iron.Balance Aging treatment required:- from 3 to 5 hours at temperatures between 600 DEG F. and 1000 DEG F. Stainless steel comprising .Chromium.16-18% .Nickel.6.5-7.5% .Carbon.0.09% .Aluminium.0.75-1.50% .Iron.Balance Aging treatment required for this alloy is not stated.  (For method of formation of woven cloth see Division D1).
Patent GB-855318-A (GB)
Title: Improvements in or relating to photographic enlargers
IPC: G03B27/52
Filed: 1958-06-20
Abstract: 855,318. Photographic enlargers. DARQUE BROS. Ltd., and WALL, R. E. June 17, 1959 [June 20, 1958], No. 19764/58. Class 98(1) To adjust the lens mount of a photographic enlarger along a guide for said lens mount, a stationary track is disposed parallel to the guide and a wheel having a rubber or other resilient tyre engaging said track is secured on a spindle mounted in a bearing on or connected to the lens mount at right angles to the guide. As shown, the lens mount 14 connected by a bellows to lamphouse slidably supported on a vertical column (not shown) is slidable along a pair of vertical guide rods 13, a pair of stationary tracks 17 are aligned behind the guide rods, and two resilient-tyred wheels 21 mounted on a spindle 20 in a bearing 19 secured to the lens mount 14 engage the front of the tracks, screw connections 25 between a pressure bar 24 secured to the rear of the tracks and the bearing 19 adjusting the pressure exerted by the springs 26 to hold the tyres on the tracks.
Patent GB-388287-A (GB)
Title: Process for the production of compound glass
IPC: C08J3/00
Filed: 1932-07-13
Abstract: In the manufacture of compound glass, glass plates are coated with a solution of rubber capable of vulcanization to which has been added a solution of a resin or artificial resin.  Low boiling solvents, e.g. methylene chloride, are preferably used, and softening agents such as esters of phthalic acid, particularly dibutylphthalate, and vulcanization accelerators may be added. Vulcanization of the rubber may be effected by blowing sulphur-containing vapours, e.g. sulphur dichloride vapour, on the coated plates.
Patent GB-759426-A (GB)
Title: Promoted cobalt oxide catalysts
IPC: C07C209/48
Filed: 1954-07-06
Abstract: Hexamethylene diamine is formed by the liquid phase hydrogenation of adiponitrile at 50-170 DEG  C. in the presence of a cobalt oxide catalyst promoted by 0.03-1 per cent by weight of silica or titania and prepared by introducing colloidal silica or titania into a purified aqueous solution of cobalt nitrate, precipitating cobalt carbonate therefrom, washing, converting to oxide at 150-500 DEG  C., forming into pellets, sintering at 600-1200 DEG  C., cooling, and reducing with hydrogen (see Group III).  In an example the nitrile mixed with anhydrous ammonia is treated with hydrogen in the presence of the catalyst at a pressure of 4000 p.s.i. and a temperature of 150 DEG  C. for 2 hours. Other constituents of the catalyst may be barium, iron, nickel and alumina.ALSO:Cobalt oxide catalyst promoted by 0.03-1 per cent by weight of the silica or titania is prepared by introducing colloidal silica or titania into a purified aqueous cobalt nitrate solution, precipitating cobalt carbonate therefrom, washing, converting to oxide at 150 DEG -500 DEG C., forming into pellets, sintering at 600 DEG -1200 DEG C., cooling and reducing with hydrogen.  The cobalt nitrate solution may be formed by digesting an excess of commercial cobalt with aqueous nitric acid to a pH of 5.4 and filtering off impurities.  The silica may be added as a silica sol and titania as titania gel.  In an example the carbonate is precipitated by heating the nitrate solution to 85 DEG C. and adding ammonium carbonate; the mixture is digested for 2 hours at 85 DEG C., filtered, washed, ignited at 400 DEG C., kneaded with water, redried, granulated, mixed with a stearin lubricant and pelletted.  The pellets are sintered at 700 DEG -900 DEG C. for 3 hours and then reduced at 400 DEG C. in a nitrogen-hydrogen mixture, the hydrogen content of which is gradually increased.  Reference is made to the inclusion of barium, iron nickel and alumina in the catalyst. The catalyst is useful for the liquid phase hydrogenation of adiponitrile to hexamethylenediamine (see Group IV(b)).
Patent GB-935581-A (GB)
Title: Apparatus for making dough
IPC: A21C1/00
Filed: 1962-05-23
Abstract: 935,581. Continuous dough mixers. E. T. OAKES CORPORATION. May 23, 1962, No. 19876/62. Class 86. A continuous dough mixer comprises in combination proportional feed as 10, 11, 17 discharging via an endless belt 15 to a screw conveyer 19 which supplies a mixer 23 having rotating radial blades 26. The mixer 23 discharges through an orifice plate 28 into a mixing trough 32 having at least one rotatable shaft with paddles; as shown, there are two counter-rotating shafts 33, 34 with paddles 38, 39, the inclination of which is adjustable. The feeders 10, 11 are continuous weighing machines and 17 is a hopper type scale feeder. Liquid ingredients are metered by the pump 20 to the hopper 18 of the screw conveyer 19. The mixer 23 may have a temperature-control jacket. The various devices may be driven by variable-speed drives. The orifices 27 are preferably between # and 1¢ inch in diameter.
Patent GB-296178-A (GB)
Title: Improvements in and relating to centrifugal liquid purifiers
IPC: B04B1/12
Filed: 1927-07-27
Abstract: 296,178. Preston Street Combing Co., Ltd., and Adams, J. W. July 27, 1927. Density separators.-A centrifugal liquid clarifier has a number of outlet jets at its largest diameter and the interior of the bowl is shaped to lead the substances under treatment to the jets. The apparatus is intended primarilv for use in wool washing, and the finely divided solids with a small quantity of liquid are discharged through the jets, while the grease and liquid are discharged in the ordinary way from the machine for further treatment. The walls of the machine are bulged as shown and jets J are placed in a series of openings O round the maximum periphery. The dirty liquor is fed in at the top T of the machine and is led to the pile of discs P at the point T<2>. Owing to the shape of the inner surface of the bowl, no solids will rest thereon but they are carried out with the escaping waste through the jets J. The Provisional Specification describes means for varying the size of the apertures through which the solids are discharged.
Patent GB-166242-A (GB)
Title: Improvements in strip feeding and punching mechanism for ticket punching and like apparatus
Filed: 1919-08-13
Abstract: 166,242. Shanklin, B. M. Aug. 13, 1919. Feeding and registering webs.-In apparatus for punching and issuing previously printed transfer tickets from perforated ticket strips, to ensure that the tickets are accurately punched in the printed positions, main and supplementary feeding devices are employed consisting respectively of feed rolls and pawls on a spring-controlled lever. The invention also relates to the operating means for the feeding, punching, and severing devices, the whole apparatus being mounted on a pillar for portability and operated on the depression of a foot lever. The ticket strip passes from a roll 17 through a passage i<1> between plates i, 18, the second of which carries sets of punches 21 corresponding to the time, date and transfer point. Selectively set parts for operating the punches are carried by a frame p, as described in Specification 166,458, [Class 106 (iii), Fares &c.], capable of downward movement against springs 30 on the rotation of a cam 93 carried by a shaft 92. Movement is imparted to the shaft 92, on the depression of the operating pedal, through a rod 79 and a lever 80 engaging a pin on an arm 82 carried by a spring-retracted shaft 83. A toothed sector 90 secured to the shaft 83, during its clockwise movement, rotates the shaft 92 through a pinion 94 and a one-way clutch and causes the cam 93 to depress the frame p. On the return movement of the sector 90 under the influence of its spring 86, movement is imparted to the lower feed roll 96 through a pinion and a ratchet clutch, the upper roller 97 being carried by pivoted arms 108, Fig. 2, and held in the feeding position by springs 110. Toward the end of the driving movement of the sector 90 the feed rolls are separated, to allow the supplementary feeding means to come into operation, by cams 117 on the ends of the shaft 98 of the lower feed roller engaging the arms 108. Normally the lower feed roll is locked by a lever 102 pivoted at 103 and provided with a notch which is held in engagement with a pin 104 on the roller by a spring 106, a cam 105 on the shaft 83 serving to remove it from the locking position. The supplementary feeding device comprises a series of spring-controlled pawls 120, Figs. 3 and 4, carried by a lever 119 pivoted at 118 and adapted to be forced forward by a bow spring 124 through a slotted link 122 connected to the upper end of the lever 119 and guided on the shaft 103. During the feeding movement of the roller 96 a cam 125 on the shaft 98 of the roller forces the pawl bearing lever 119 to the rear and allows it to move forward when the upper feed roller is raised, the pawls then engaging the ticket perforations and feeding the strip, slowly at first and then more quickly, under the influence of the spring 124. Separation of the feed rolls to allow manual adjustment of the strip is effected by means of a slide 115 which is connected by a wire 114 to a bell-crank lever 111 serving to raise the upper roller 97 through a link 113.
Patent GB-404043-A (GB)
Title: Improvements in or relating to gauges or measures of distance or length
IPC: G01B3/10
Filed: 1932-07-15
Abstract: 404,043. Measures of length. TOWNDROW, E. J., 19, Dunraven Avenue, Salfords, Surrey. July 15, 1932, No. 20007. [Class 106 (ii).] A measuring device, more particularly for the game of bowls comprises a frame having a base and an upright at right angles to each other and an extensible tape measure mounted in the right angle. The base A<1> has at right angles to it an upright A<2> of a height preferably greater than the diameter of the " jack." The upright has a telescopic extension A<3> for use when the " jack " has been forced into the ditch, a pin preventing the extension being entirely withdrawn. A web is formed in the right angle to support the ring-shaped casing B of a spring tape measure either or both side pieces B<1>, B<2> of which may be removable. When the casing B is separate and removable from the web it may be retained in a semicircular recess in the web by lips or flanges on the side pieces. At the outer end of the tape is a pointer C<1> provided with a thumb piece C'. The other end of the tape is clamped to a split pillar B<3> within the casing. The inner surface of the side B<2> is formed with a hollow boss B<4> which fits over the end of the pillar which is retained by a screw B<5>. The tape is led through a slot D<1> in a spring plate D, one end of which is fixed to the wall of the casing. This acts as a brake to retain the tape which is released by pressing a knob D<3>. A calliper E is hinged to the base and is normally housed in a recess therein.
Patent GB-1515613-A (GB)
Title: Rotor electrode for a distributor for an i/c engine and method of making the same
IPC: F02P7/02
Filed: 1976-05-14
Abstract: 1515613 Spark-jump rotary distributers TOYOTA JIDOSHA KOGYO KK 14 May 1976 20051/76 Heading H1N A rotor electrode 2 of a distributer for an internal combustion engine has a silicon coating 5 for suppressing radio interference formed by vapour deposition of silicon on the electrode 2 whilst it is maintained at a negative potential in an inert gas. A brass or steel rotor electrode 2 is coated with a silicon layer 5 having a thickness of 5-15 Ám. on the peripheral edge surface 6 facing the side electrodes 3 of the distributer and on its adjacent upper and lower surfaces 7<SP>1</SP>, 7.
Patent GB-425085-A (GB)
Title: Self-priming rotary pumps
IPC: F04D9/02
Filed: 1934-07-09
Abstract: 425,085. C e n t r i f u g a l pumps. LONGENECKER, C. I., 6830, Wells Street, Wauwatosa, Wisconsin, U.S.A. July 9, 1934, No. 20092. [Class 110 (i)] The priming of a centrifugal pump by fluid from a chamber on the discharge side is facilitated by a knife-edged vane 41 which can be adjusted so as to be in close proximity to a small-size impeller 31. The vane is secured to an inner wall 35 separating the volute from the discharge and is either tangential to the periphery of the impeller or at an angle thereto. Specification 394,871 is referred to.
Patent GB-1069896-A (GB)
Title: Improvements in or relating to impeller pumps,particularly for use in central heating installations
IPC: F04D29/22
Filed: 1964-05-14
Abstract: 1,069,896. Centrifugal pumps. J. L. STULENS. May 14, 1964 [May 15, 1963; Jan. 30, 1964], No. 20108/64. Heading F1C. [Also in Division H2] To permit dismounting of the pump impeller and driving motor 8 in a heated-liquid circulating system, particularly a central heating installation, the flow is diverted, without stoppage, through a by-pass passage 10 by first closing a valve 11 on to a seating 4 and then a valve 15 on to a seating 18. This sequence of closing is assured by suitably arranging and dimensioning the valve hand-wheels 13, 17 as shown. The impeller discharges to a circular cavity 22 which communicates through an annular recess 21 with an outlet 19. Holes 26 communicating with a slot 25 containing a filter 27, as of felt, provide lubrication and cooling of the motor 8. The impeller blades may be symmetrical about their axes, or asymmetrical, Fig. 10 (not shown), to provide a different flow rate on reversal of the motor. The flow rate may be varied by the valve 11. The thickness of the blades may taper from front to back at an included angle of 30 degrees. The motor rotor is turned to ensure it is not jammed when first starting by a screwdriver inserted, after removal of a nut 30, into a bore 28 to engage a slot 29 in the motor shaft 7, the valves 11, 15 being positioned to divert the flow through the by-pass passage.
Patent GB-201396-A (GB)
Title: Improvements in apparatus for spraying hops, fruit trees and the like
IPC: B05B1/30
Filed: 1922-07-25
Abstract: 201,396. Fletcher, A. J. July 25, 1922. N o z z l e s with regulable orifices; nozzles for producing whirling sprays.-In apparatus for spraying hops, fruit trees, &c., the tube through which the liquid is forced is provided at its outer end with an elbow-piece b, Fig. 1, in which is mounted a spraying-plate c, pressed towards the outlet e by a spring d, and means for adjusting the relative positions of the spraying disc and outlet in order to vary the character of the spray. The position of the disc may be varied by means of a cord i, Fig. 1, wound on a drum j on a cock k by means of which the liquid supply is regulated. As shown in Fig. 2, the adjustment of the disc may be effected independently of the liquid supply. A hollow bracket q is attached to the handle m and carries at its upper end a guide r within which is slidably and rotatably mounted a fitting s on which the spraying-tube is screwed. Within the bracket q and passing through and secured to the handle m is a tube t the upper end of which is secured to the end i. The fitting s has a cam groove x formed on it engaging a pin y, so that an up-and. down movement of the spray tube is obtained by rotation of the bracket q, by which means the relative position of the spray plate and outlet is varied. The groove x terminates in a vertical groove x<1> so as to allow the fitting s to be withdrawn sufficiently to allow removal of the spraying- plate.
Patent GB-221224-A (GB)
IPC: C09D5/10
Filed: 1924-08-28
Abstract: 221,224. Wilshaus, A., (Assignee of Schilling & Co., Ges.). Aug. 28, 1923, [Convention date]. Paints.-A paint for protecting metal surfaces comprises a suspension of a mixture of lead and lead oxide in linseed oil, preferably prepared in a colloid mill. It is stated that the lead oxide is reduced to lead by the linseed oil, the oil becoming oxidized.
Patent GB-1133976-A (GB)
Title: Improvements relating to devices for rendering land vehicles amphibious
IPC: B60F3/00
Filed: 1966-05-09
Abstract: 1,133,976. Amphibious vehicles. M. R. D. HUME. 9 May, 1966, No. 20397/66. Headings B7A and B7V. A motor vehicle 1 is rendered amphibious by securing to it a buoyant framework 2 comprising a central panel 3 and hinged side panels 4 and is propelled by its driving wheels. The buoyant framework is usable as a trailer for towing on land behind the motor vehicle, Fig. 9 (not shown), and the folding side panels 4 may have attached to them additional buoyancy containers filled with foamed plastics material. Propulsion on water may be achieved by paddle attachments (17), Fig. 2 (not shown), secured to the rims or hubs of the driving wheels or by a propeller arrangement driven from the driving wheels, Fig. 7 (not shown). The assembly may be steered from the steering wheel or by hand-operated rudder.
Patent GB-439693-A (GB)
Title: Improvements relating to taps or cocks
IPC: F16K5/08
Filed: 1934-07-13
Abstract: 439,693. Plug cocks. VALLON, C. N., Permureda, Pinhoe, WILLEY & CO., Ltd., Water Lane, both in Exeter, and UNITED GAS INDUSTRIES, Ltd., 51, Lincoln's Inn Fields, London. July 13, 1934, No. 20645. [Class 135] To determine the limits of position of the plug e of a plug cock, a metal ring b is inserted in an annular excess at the lower end of the plug cavity, being fixed by outer diametrically opposite projections d, engaging corresponding recesses or by radial pins, and having an inner projection c or pin which when the plug is turned to either of its closed positions engages the shoulder at one or other end of an arcuate slot f in the plug. The ring b is retained by a nut h and a washer g which has a non-circular aperture corresponding to a non-circular boss e<3> on the plug.
Patent GB-1299667-A (GB)
Title: Memory cores having rectangular hysteresis loop characteristics and method of manufacturing the same
IPC: C04B35/26
Filed: 1970-04-29
Abstract: 1299667 Ferrite cores HITACHI Ltd 29 April 1970 [6 May 1969 (2)] 20645/70 Heading H1H A magnetic memory core having a rectangular hysteresis characteristic is made of a composition including Li, Fe<SP>3+</SP>Zn<SP>2+</SP>, O together with Mn<SP>3+</SP> and/or Mn<SP>2+</SP> and represented by the formula where 0À03 # x + y # 0À75; 0À09 # z # 0À42. <SP>4</SP> The composition may also contain V 2 O 5  and/or SiO 2  in amounts not greater than 2À0 wt. per cent and 3À0 wt. per cent respectively. The core is made by pre-firing a mixture of oxideforming metal compounds, e.g. oxalates or carbonates, grinding, pressing into shape and sintering. Sintering may be effected at 1000-1200‹ C. for, e.g. 2-20 minutes in an oxygen atmosphere when Mn<SP>2+</SP> is absent, in conditions of reducing O 2  partial pressure with increase in Mn<SP>2+</SP>/Mn<SP>3+</SP> ratio, and in a reducing atmosphere when Mn<SP>3+</SP> is absent. In examples, wet or dry mixtures of oxide precursors are fired at 700- 900‹ C. for 2 hrs., ground, mixed into granules with P.V.A., press-moulded into toroids and sintered on O 2 , air or N 2 . The toroids have a rectangular hysteresis loop.