baber/WOPTO huggingface dataset:
Patent GB-555326-A (GB)
Title: Improvements in or relating to valves and to pumps incorporating such valves
IPC: F04B7/00
Filed: 1942-02-12
Abstract: 555,326. Valves; pumps. HUBER, C J. Feb. 12, 1942, No. 1869. [Class 135] [Also in Group XXVI] A valve device particularly adapted for use in a pump used in blood transfusion apparatus comprises a tube of resilient compressible material and an inner member or core of the same crosssectional contour but of smaller cross-sectional area than the normal cross-sectional area of the tube together with mechanically operated means for compressing a portion of the wall of the tube into contact with the periphery of the inner member. The Figures show the valve used as inlet and outlet valves of a pump. The pump comprises a pair of elastic tubes 21, 22 secured at the ends to nipples 23 screwed into the end walls 13 of an outer casing and carrying cross pins 33a supporting inner core members 32, 33. Each tube is surrounded by three pairs of blocks slidably arranged between the base plate 11 and a removable cover plate 14. The outer blocks are adjustably held in place by set screws 37 while the inner blocks have hardened bearing members adapted to be engaged by a series of cams 48, 49, 50 on a power driven shaft arranged between the tubes. The inner faces of the blocks have curved recesses with a radius slightly less than the normal radius of the tube and subtending an angle of 45 degrees. These blocks also have recesses with inclined surfaces adapted to cooperate with similar surfaces on intermediate members 42 having curved faces also subtending an angle of approximately 45 degrees. The cams 48, 50 are shaped so as to hold the valves closed during one half of a revolution and to permit the valves to be opened fully for approximately one quarter of a revolution. The cams 49 are so shaped that they have no compressing effect through 180 degrees of revolution but gradually compress the tubes during 135 degrees followed by a somewhat abrupt release during the remaining 45 degrees. In a modification a single inner member extends from end to end of the tubes. The tubes may extend to the outside of the casing in place of being secured to nipples 23.
Patent GB-1534893-A (GB)
Title: Optical beam focusing arrangement
IPC: G02B26/12
Filed: 1976-01-19
Abstract: 1534893 Focusing arrangements RCA CORPORATION 19 Jan 1976 [28 April 1975] 1918/76 Heading G2J [Also in Division G4] A device for reading the bar codes (or the like), on a succession of articles of dissimilar height, comprises an optical beam scanning arrangement and a means for determining the height of the surface to be read, the focus of the optical beam being adjusted to coincide with the surface to be read by the interposition of a suitable thickness of parallel plates into the beam path at a position where the beam is non parallel. As shown in Fig. 4 in the absence of a plate P the focus is at a distance (f 2  + y 1 ) from the lens (full line rays), whereas the inclusion of plate P changes it to (f 2  + y n ). As described Figs. 1 and 3, (not shown) a rotating polygon scanning mirror is interposed between the lens 74 and the article 10. The article is a parcel on a conveyer, and its height is determined by the extent to which it obscures passage of light from a source to a vertical row of diodes. The output from the diodes is processed in a matrix and the output therefrom selectively controls the insertion or removal from the beam path of three parallel sided plates of different thicknesses so as to obtain the best focus on the article top surface.
Patent GB-626370-A (GB)
Title: Improvements in or relating to apparatus for grinding ceramic tiles and similar ceramic articles
IPC: B24B9/10
Filed: 1947-01-21
Abstract: 626,370. Grinding tiles &c. HORICA, M. Jan. 21, 1947, No. 1956. Convention date, Jan. 29, 1946. [Class 60] Tiles and similar ceramic articles are ground, after the first firing and preferably before glazing, to a uniform rectangular size. Apparatus comprises a rotating drum 1 which carries the tiles 8 between a pair of grinding wheels 12, 13. The tiles 8 are fed from a magazine 18 by a reciprocating picker 19 into recesses 3 in the drum, and are clamped therein by fingers 7 normally urged by springs 9 to force the tiles against abutments 4. The clamping members have rollers 10 coacting with a fixed cam 11 which moves the fingers 7 to open position at the loading and unloading positions. The ground tiles are taken by a conveyer 14 to a device where they are turned through 90 degrees and the other two edges are then ground in a similar machine.
Patent GB-566054-A (GB)
Title: Improvements relating to the suspension of headlines used for trawl fishing and applicable also for mine-sweeping
IPC: A01K75/04
Filed: 1940-02-01
Abstract: 566,054. Mine-sweeping. CHANT, J. Feb. 1, 1940, No. 1972. [Class 9 (ii)] [Also in Group VI] A trawling &c. net is provided with floats 20 mounted on the head-line 17 or an auxiliary line 16 connected by ties 18 to the head-line, so that the floats form a part of the head-line &c. The line may pass through the floats or be connected to eyes on spindles 21 on which the floats rotate. The floats have vanes 23 so that the pressure of the water thereon causes the floats to rotate. In another form, the floats are mounted on the headline in gaps formed in the net. The floats may be incorporated in a front cable of mine-sweeping gear.
Patent GB-280067-A (GB)
Title: Tooth brush
IPC: A46B5/00
Filed: 1927-01-22
Abstract: 280,067. Myers, R. R. Jan. 22, 1927. Fixing by chuck-grip sockets; pivoted handles with clamping-devices for brushes.-The head 20 of a toothbrush is provided or formed with a circular stud 25 adapted to be gripped by a circular portion 11 of a clamping device 10 which is provided with a screw-threaded stem 18 for engagement with a nut 19. By rotating the nut the device 10 is moved relatively to the wall of a metal member 6 secured to the end of the handle and thereby the pressure of the device 10 is adjusted.
Patent GB-864886-A (GB)
Title: Method of defluorinating phosphoric acid
IPC: C01B25/237
Filed: 1958-01-21
Abstract: Aqueous phosphoric acid prepared from phosphate rock, e.g. by treatment with sulphuric acid, is freed from fluorine in a batch process which comprises the steps of concentrating the acid to a p P2O5 content of at least 50%, preferably 54-58%, passing the concentrated acid to a steam-contacting zone, supplying steam to the zone throughout the addition of the acid, and continuing the supply of steam to the zone after all the acid has been passed to the zone, the conditions in the zone being such that the acid is maintained at its b.p. throughout the steps of contacting with steam and the fluorine content of the acid at the end of said steps is less than 0.1%.  The concentrated acid may be preheated to a temperature above 250 DEG F., e.g. 300-320 DEG F.  The acid may be maintained at its b.p. solely by means of the steam, or by means of a combination of the steam and indirect heating.  The steam may be at a temperature of 300-500 DEG F. and may be introduced at a rate of 0.7-1 lb./hr./lb. of P2O5.  The contacting zone may have a depth of 3.5 feet.  The steam may be introduced into the bottom of the contacting zone in the form of fine bubbles.  Three zones in series may be employed.  The concentration of the acid being contacted with steam may be maintained constant by reflux.  The stripping rate may be improved by the presence of 1-2% of finely divided silica which may be introduced in the refluxed liquid.  Two examples are given.
Patent GB-900594-A (GB)
Title: Improved means for providing intermittent rotary motion
IPC: B65H20/04
Filed: 1959-01-20
Abstract: 900,594. Toothed gearing. GRAPHIC TECHNOLOGY Ltd. Jan. 20, 1960 [Jan. 20. 1959], No. 2022/59. Class 80 (1). Gearing for effecting intermittent rotary motion of a driven shaft 12 from a continuouslyrotating driving-shaft 11 comprises a gearwheel 19, having an untoothed portion 19A corresponding to the restperiod of the intermittent shaft 12, secured to the driving-shaft 11, and a gear-wheel 20 secured to the shaft 12 and adapted to be driven from the gear 19, locking means being provided for holding the shaft 12 at rest during the rest period. The locking means comprises a cam 22 secured to the driven shaft 12 and having a recess 23 adapted to be engaged by a projection 24 formed on a pivotally-mounted locking lever 25. An unlocking lever 27 is pivotally mounted about the same axis as the lever 25, and the two levers are urged together by a coiled torsion-spring 29. The levers are urged away from the cam 22 by a coil-spring 32. A locking cam 31 and a snail type unlocking cam 30 are secured to the driving-shaft 11. Just before the projection 24 engages the recess 23 in the cam 22, the high part 30B of the cam 30 engages the lever 27' thereby stressing the torsion-spring 29 which causes engagement when the parts 23, 24 come into register. The cam 31 positively holds the locking lever 25 in the engaged position during the rest period. At the end of this period, a step 28 in the lever 27 passes over a step 30A in the cam 30 and the spring 32 causes disengagement of the projection 24 with the recess 23. Any possible reversal of the mechanism is prevented by an internal snail cam 33 attached to the machine frame and engaged by a spring- loaded peg carried in a radial slot 34 in the gearwheel 19. The shaft 11 is driven from a shaft 10 through a train of gears 13 ... 18, the gears 14, 15 being rotatably mounted on the shaft 12. The invention is applied to mechanism feeding a web of paper in a machine. Specification 900,593 is referred to.
Patent GB-1000496-A (GB)
Title: Matrices for regenerative heat exchangers
IPC: F28D17/02
Filed: 1964-01-16
Abstract: 1,000,496. Thermal regenerators. GENERAL MOTORS CORPORATION. Jan. 16, 1964 [Jan. 31, 1963], No. 2039/64. Heading F4K. A matrix for a regenerative heat exchanger comprises a stack of corrugated sheets, the corrugations being in contact with and traversing corrugations of adjacent sheets at an angle of between 10 and 40 degrees. The sheets are provided with staggered slots or slits extending transverse to the corrugations (not shown on Fig. 2). As shown in Fig. 2, the corrugations are straight but they may be chevron-shaped (Fig. 5) with the chevron apices of adjacent sheets pointing in opposite directions. In use heat exchange fluid is directed (see arrows b on Fig. 2) at an angle of between 5 and 20 degrees with the corrugations. The material thickness of each sheet is between 0À0005 and 0À01 of an inch, and each corrugation has a height to stock thickness ratio of 5: 1 to 20: 1 and a pitch to height ratio of from 2: 1 to 3: 1. The material of the sheets may be stainless steel, aluminium, copper, ceramics, wood or paper.
Patent GB-1213615-A (GB)
Title: Improvements in or relating to linear antenna arrays for very short electromagnetic waves
IPC: H01Q13/00
Filed: 1969-01-14
Abstract: 1,213,615. Aerials. ALBISWERK ZURICH A.-G. 14 Jan., 1969 [27 June, 1968], No. 2061/69. Heading H4A. A linear aerial array comprises a plurality of inclined resonant slots 12, Fig. 2, in a narrow side 4 of a rectangular waveguide 1, each of which is coupled to a separate horn 13 formed by a comb-shaped structure 6 and sheet members 10, 11. The structure 6 consists of two supports 7, 8 which lie on the broad sides 3, 2 of the waveguide 1 and are fixed by screws 15 to a U-shaped mount 14, and walls 9 which form the sides of the horns 13. The members 10, 11 lie on the mount 14, sealing strips 17 being interposed, on the supports 7, 8, and on the walls 9. A polytetrafluoroethylene foil 16 is stretched over the horns 13 and the members 10, 11 and is secured, with the said members, by means of strips 18. The waveguide 1 is fed at one end and a matching load is provided at the other end. The array may be associated with a cylindrical reflector (21), Fig. 1 (not shown).
Patent GB-228190-A (GB)
Title: Improvements in and relating to methods of brazing
IPC: B23K1/00
Filed: 1925-01-24
Abstract: 228,190. British Thomson - Houston Co., Ltd., (Assignees of Steenstrup, C.). Jan. 25, 1924, [Convention date]. Turbines.-In brazing together three or more metal members one of which consists of a metal alloyable with the brazing metal, such as in joining steel members to a member consisting of copper and nickel known under the Registered Trade Mark as Monel Metal, by means of copper, the brazing metal is placed in a cavity in one of the former members so that it first flows between the members of less alloyable metal and does not reach the more alloyable metal until its quantity has become reduced. The steel supports 1, 2, steel spacers 5 - - 7 and Monel metal partitions 8 - - 10 of a turbine wheel described in Specification 207,310, [Class 110 (iii), Turbines &c.]. are brazed together, by assembling the spacers and partitions in the grooves 3, 4 of the supports placing copper pins 12 in cavities 11 or 11<a> in the supports in communication with the abutting surfaces of the supports and spacers and then heating in a hydrogen atmosphere so as to melt the copper. The copper comes into contact with the partitions from the interior after first passing over and joining the steel surfaces of the spacers and supports and so promotes the flow of copper, reduces the alloying of the copper with the Monel metal, and avoids weakening of the exterior portions of the partitions.
Patent GB-1525545-A (GB)
Title: Continuous casting process
IPC: B22D11/10
Filed: 1977-01-20
Abstract: 1525545 Electromagnetic stirring INSTITUT DE RECHERCHES DE LA SIDERURGIE FRANCAISE 20 Jan 1977 [20 Jan 1976] 2208/77 Heading B1C [Also in Division B3] Metal is continuously cast, e.g. in a mould as described in Specification 1525036 to form round or substantially square billet, the molten metal being rotated about the mould axis by a rotating magnetic field (800-2000G) produced by a polyphase inductor, e.g. with one pair of poles per phase, adjacent the casting in the mould, the frequency of rotation of the field being between 4 and 15Hz and the mould being of precipitation-hardened Cu alloy, e.g. Cu/Cr, Cu/Ag, Cu/2% Be. Cu/Zr, Cu/Cr/Zr, Cu/Be/Co or Cu/Be/Ni, with a wall thickness e given by wherein d=mould external diameter, while α=coefficient of linear expansion #= thermal conductivity in cal/cm. sec.C E=Young's modulus in kg/mm<SP>2</SP> Á=Poison's coefficient and Re=yield strength in kg/mm<SP>2</SP> of the mould material, and Ï=thermal flow at the meniscus level in cal/cm<SP>2</SP>. sec. The wall thickness e is less than 15mm, e.g. 8mm.
Patent GB-1483835-A (GB)
Title: Furniture
IPC: A47B13/00
Filed: 1975-12-01
Abstract: 1483835 Furniture brackets A MARSHALL & SONS (OFFICE EQUIPMENT) Ltd 1 Dec 1975 [17 Jan 1975 21 March 1975] 2248/75 and 12030/75 Heading F2M Brackets 5 are used for connecting furniture, such as a desk top 1 to a desk of the "knockdown" kind. The bracket is screwed to the underside of the desk top and the top is slid forward so that a bolt 14 located in a rabbet in the rear edge of the front rail 14 engages with the slot 13 in the bracket. The top is then secured by means of wing nut 16. The back panel of the desk 25 may be connected to the side panels 26 of the pedestal by means of brackets 27 and 28 (Fig. 5).
Patent GB-857663-A (GB)
Title: Improvements in or relating to dry gas meters
Inventor: PEHAU PIERRE
IPC: G01F3/22
Filed: 1957-01-23
Abstract: 857,663. Gas meters. CONTINENTAL SPRAGUE METER ITALIANA S.p.A. Jan. 23, 1957, No. 2368/57. Class 54. A dry gas meter has a pair of diaphragms 11, 12 which drive a single shaft 20 and divide the meter into three measuring chambers 7, 8, 9, and a valve comprising an apertured disc 30 moved in a circular path over a grid 24 places each of the measuring chambers in succession in communication alternately with a gas supply chamber 59 and a gas outlet chamber 29. The diaphragms are linked by rods 14, 17 to the shaft 20, the rod 14 being connected to a slide 18a adjustable in an arm 18 by a screw 71 and the rod 17 being connected to a pin 74 which depends from a crank 19 secured to the shaft by a screw 70 and forms a pivot for the arm 18. A crank 30a on the shaft 20 has a pin 54 fitting in a bearing 13 in a lid 56 over the disc 30 and a stud 31 on the lid is connected to a crank 32 for driving an index 35 through a gear-box 35a. The disc 30, which is preferably made of glass, slides in a circular path over three lateral apertures 25, 26, 27 and central aperture 28 in the grid. An elastic membrane 38 acted on by an adjustable spring 42 is linked to a valve in the supply union and is lifted by excess pressure in the supply chamber 59 so that the valve restricts the flow of gas to the chamber. In Fig. 6, the lateral aperture 27 is exposed beyond the periphery of the disc to supply chamber 59 so that gas flows to the central measuring chamber 7 through a passage 53, while the lateral aperture 25 is exposed by the disc aperture 58 so that gas from the chamber 9 flows through a passage 51 to the discharge chamber 29 by reason of the outward movement of the diaphragm 12. As the disc travels counter-clockwise, the aperture 27 is masked and then exposed to the aperture 58 so that the central chamber can discharge as the aperture 25 is masked to terminate flow from the chamber 9 and the aperture 26 is opened to fill the chamber 8 through a passage 52 and moves the diaphragm 11 inwardly. Subsequently chamber 9 again starts to fill and both diaphragms move inwardly until the central chamber 7 is fully discharged and then the central chamber starts to fill again and causes discharge from the chamber 8. During the travel of the disc two of the lateral apertures may be exposed simultaneously by the periphery or by the central disc aperture 58 but at no time are any two lateral apertures exposed to the supply chamber at the same time as one of the two apertures is exposed to the central disc aperture so that unmetered flow is not possible.
Patent GB-559446-A (GB)
Title: Device for cooling oil
IPC: F28C3/04
Filed: 1943-02-13
Abstract: 559,446. Gravity separation of liquids from liquids. WALDRON, T. N., and DAVIDSON, P. G. Feb. 13, 1943, No. 2395. [Class 46] [Also in Group XIII] To cool oil in a tank 1, the oil is drawn into an injector 2, by cold water supplied through a pipe 3 and the mixture is delivered into a tank a in which the oil is separated from the water by gravity and then returned to the oil tank 1. Water may be drawn off from the bottom of the oil tank through a pipe 15.
Patent GB-784921-A (GB)
Title: Glass blowing device
Inventor: CONRAD KEITH
IPC: C03B9/36
Filed: 1956-01-25
Abstract: 784,921. Glass blowing. OWENS-ILLINOIS GLASS CO. Jan. 25, 1956, No. 2436/56. Class 56. A parison blowing device comprising a fluiddriven blow head and air baffle thereon, has means to control a floating position of the air baffle between the parison and the blow head. The glass forming machine comprises a table 12 rotatable about a central column and adapted to support one or more neck forming moulds 13, each mould 13 with a formed parison 14 being moved from a blank forming mould station into a stationary split blowing mould 16 mounted on a base and hinged about a post for opening and closing movement. The blowing head unit 22 is mounted on a standard 23 to be swung manually to and from operating position about fulcrum 25, where it is held by a spring detent 80. Air is supplied to unit 22 through lines 32 and 35 which are cam controlled. Air through line 32 passes through conduits 40, 41 to a vertical conduit 42 supplying air to the top end of cylinder 49 and piston 50 and to the top of cylinder 51 above the piston 52 held in its upper position by a spring 53. The piston 52 and the air baffle 70 thereon are depressed by the air pressure, the depression amount depending on the amount of leakage provided by a small opening 55 in the piston 52 and leakage from cylinder 51 through an opening 56 adjustable by a needle valve 57 to permit balancing of the active air pressure on opposite sides of the baffle 70. The air through conduit 42 to the top of cylinder 49 depresses the piston 50 to project the piston rod 59 and blowing tube 60 into the hollow part 61 of the parison 14. As piston 50 reaches the lowest position, A, air enters conduit 62 of the piston rod 59 and opening 64 of the blowing tube 60, the pin 58a being clear of the bushing 58, which air expands the parison 14 and flows upward along the inside walls of the blown article to press against the baffle 70 and maintain it slightly lifted, leaving always an air escape gap, B. When the article is blown, air flows through conduits 35, 71 and 72 to lower end of cylinder 49 to raise the piston 50, air to blowing tube 60 being cut off by the pin 58a. The blowing tube 60 is threaded into piston rod 59 so as to be interchangeable.
Patent GB-524208-A (GB)
Title: Improvements in frames for use in spraying operations upon hides, skins, leather andthe like
IPC: C14B1/26
Filed: 1939-01-24
Abstract: 524,208. Coating by spraying. AYLES, W. F. Jan. 24, 1939, No. 2437. [Class 95]  [Also in Group IV] A frame, for use in spraying operations upon hides, skins, leather and the like, includes a screen, for supporting the material to be sprayed, comprising a plurality of lengths of wire maintained under tension. The lengths of wire, which are preferably arranged horizontally, may be separate and independent wires, each separately tensioned, or portions of a continuous tensioned wire which is passed to and fro across the frame. In the device shown, an outer rectangular framework 1 comprises. longitudinally slotted vertical members 3, the slots housing lengths of standard roller chain 8, and the continuous wire 2 is passed to and fro across the frame, and around the rollers 10 of the chain. Tensioning devices 11 are provided at any of the corners of the frame, and the wire may be tensioned sufficiently to deflect the members 3 slightly inwards, thus using the springiness of the frame to allow for expansion and contraction of the wire due to changes in temperature. The chains 8 may be protected from the spraying liquid by recessed wooden battens 16. The wire used is preferably made of a non-corrosive metal, such as stainless steel. The material to be sprayed may be suspended from one or more perforated strips 18, by hooks or the like.
Patent GB-507090-A (GB)
Title: Improvements in apparatus for adding a liquid proportionately to another liquid
IPC: B67D7/74
Filed: 1938-01-26
Abstract: 507,090. Mixing liquids in flow; electric control systems. PERMUTIT CO., Ltd., MILTON, J. G., and CLARK, R. Jan. 26, 1938, No. 2557. [Class 86] [Also in Group XXXVIII] Apparatus for adding one liquid in proportionate quantities to a stream of a second liquid comprises electrically-operated means, actuated by a meter in the second stream, for moving a shoot which in one position supplies the first liquid to the stream, and in the other position returns the first liquid to storage, the return being effected after a predetermined amount of the first liquid has been added. The second liquid passes through a meter 13 and the first, continuously supplied to a pipe 6, is deflected by the distributer 8 either to the funnel 10 to be mixed with the second liquid, or to the funnel 11 which returns it to the storage tank. The distributer is operated by a cam 23 actuated by a motor 22 which also actuates, through 1: 2 gearing, a mercury switch 26, a second mercury switch 27 being actuated by the meter 13. The pump 5 for supplying the first liquid is operated by a motor 20 also actuating a cam 28 which operates contacts 29, the latter being also maintained closed by a solenoid forming part of a holding circuit. Assuming the switch 27 has been moved to the position shown, the circuit of the motor 22 will be closed as soon as the cam 28 rises to its top position and closes the contact 29 ; this contact will be maintained closed after the high part of the cam has passed and the motor 22 will rotate the cam 23 to rock the distributer. At the end of the cycle, the switch 26 will be rocked to break the circuit. In a modification the distributer is rocked by a solenoid. Specification 367,453 is referred to.