baber/WOPTO huggingface dataset:
Patent GB-571754-A (GB)
Title: Improvements in or relating to optical projection apparatus
IPC: G03B21/06
Filed: 1943-10-07
Abstract: 571,754. Optical - projection apparatus. REID & SIGRIST, Ltd., REID, G. H., and CANTLE, L. G. H. Oct. 7, 1943, No. 16456. [Class 97 (i)] An optical projection apparatus for projecting an image of an opaque object on to a screen is provided with a lever focusing mechanism for adjusting the position of the object relative to the projection lens. As shown, a disc 14 carrying a plurality of objects is supported on a spindle 36 arranged to be moved axially for focusing by a lever 44 co-operating with a collar 40 and adjusted at its other end by a nut 51 and screw 52 operated by a hand wheel 68. A rotatable turret 16 carries four different objective lenses 30 and is arranged with four apertures to allow beams of light from two angularly disposed lamps 24 to fall on the selected object, the image of which is projected on to a screen on the front of the cabinet 10, after reflection from an adjustable mirror 34. A lamp house 18 is mounted above the rotatable disc 14 for use when it is desired to project a silhouette of the object.
Patent GB-1327727-A (GB)
Title: Laser window
IPC: H01S3/034
Filed: 1972-04-10
Abstract: 1327727 Lasers COMPAGNIE GENERALE D'ELECTRICITE 10 April 1972 [9 April 1971] 16471/72 Heading H1C To minimize thermal damage by transmitted laser radiation 3 through a doped semi-conductor window 1 mounted at Brewster's angle at the end of a gas discharge tube 2, the thermal conductivity of the window outside the area transmitting the radiation is improved by the use of a higher dopant concentration 5 to produce a degenerate surface. The active gas contained in the tube may be CO 2  radiating at 10À6 Á. The semi-conductor window may be N or P doped germanium, gallium arsenide or silicon, examples being germanium doped with phosphorus or antimony for N type, and germanium doped with boron, aluminium, gallium or indium for P type. Thermal contact between that part of window 1 having the higher dopant concentration and the end of the generally metallic discharge tube 2 is obtained through a thin intermediate metal layer 6 of aluminium, copper or gold deposited in the window periphery. Solder or pressure is used to position the window in the tube.
Patent GB-186119-A (GB)
Title: Improvements in or relating to link belting
IPC: F16G5/18
Filed: 1921-06-15
Abstract: 186,119. Whittle, O. L. June 15, 1921. Belts.-Relates to link driving-belts of the type comprising leather or like links alternating with and connected by metal links formed with projecting pins, as described in Specification 13412/04, and in which metal reinforcing-plates perforated to correspond with the holes in the leather links are provided to relieve the strain on the leather links. According to the invention, the reinforcing-plates 4 are formed with elongated holes or perforations 5, at the outer ends of which tongues 6 are bent up at right-angles, being preferably curved to conform to the shape of the. holes in the leather links 1. In assembling the parts, the tongues 6 extend into the holes in the leather links and form bearing-surfaces for the pins 3 projecting from the intermediate metal links 2.
Patent GB-150483-A (GB)
Title: Joiner's trenching tool
IPC: B23D49/11
Filed: 1919-07-02
Abstract: 150,483. Lodge, T. H. July 2, 1919. Saws.-A wood-trenching tool is constructed with a pair of parallel saw blades carried by a handle raised to clear the work and provided with means for limiting the depth of cut. A modified joiner's square is employed for guiding the tool in its movement. The saw blades 8 are slotted at 9 and clamped between nuts 7, adjustable to vary the distance between the blades, on screwed spindles 4 extending through, and clamped by nuts 5 to a plate 1 fitted with a handle 3 and preferably a back rib 2. The depth of cut is limited by the bottom 19 of the plate 1, and is adjustable by nuts 17 mounted in the rib 2 engaging screws 15 screwed tightly into rods 12 extending through slots 13 in the plate and engaging holes 14 in the blades. The parts are readily dissembled by unscrewing the screws 15 from the rods 12 and withdrawing these longitudinally. The tool is guided between the edge 22 of the blade of a joiners' square, which is fitted with a pin 26 for holding it in adjusted position, and the edge of a blade 23 adjustably spaced and held from the blade 22 and head 21 of the square by slotted bars 24 and nuts 25.
Patent GB-151116-A (GB)
Title: Improvements in liquid feed apparatus, particularly automobile fuel feed apparatus
IPC: F02M1/00
Filed: 1919-07-02
Abstract: 151,116. White, A. E., (Stromberg Motor Devices Co.). July 2, 1919. Direct air and gas pressure apparatus, automatic.-Liquid such as fuel for an internalcombustion engine is raised from a main tank 1 to another chamber 3 (e.g. a carburettor float chamber) by means of an impulse-producing device such as a piston 7 reciprocated in a cylinder 6. The variations of pressure thus produced are communicated through a pipe 5 to a chamber 4. Fuel is thus drawn into the chamber 4 through a pipe 21 and driven out to the float chamber 3 through a valve 15 and pipe 16. If, however, the quantity of liquid in the chamber 4 exceeds a certain amount, a float 30 therein opens a valve 29 leading to the atmosphere or to an air space and the pumping effect of the impulses is destroyed. A by-pass may be arranged from the chamber 4 to its inlet 20 with an adjustable check valve.
Patent GB-1456139-A (GB)
Title: Remotely activated power switch for sewing machines
IPC: D05B69/10
Filed: 1974-04-16
Abstract: 1456139 Sewing machine SINGER CO 16 April 1974 [7 May 1973] 16667/74 Heading DIG A sewing machine 10 having a frame 11 is provided with an insulated motor housing 35, an electric motor 33, and an electrical switch 44 in the current path between the motor and an electrical power source (not shown) is provided with a switch position selector 63 coupled to the switch by a pitman 58, thebracket 52, pitman and switch slide 49 being of insulating material. The frame has a boss 68 to guide the pitman 58 and the housing has a recess 41 presenting side walls which guide the bracket 52 connecting the pitman to the switch slide.
Patent GB-1141924-A (GB)
Title: Silica beads
Inventor: SHIPTON GORDON OWEN
IPC: C01B33/154
Filed: 1966-04-15
Abstract: 1,141,924. Silica beads. OWENS-ILLINOIS Inc. 15 April, 1966, No. 16716/66. Heading C1A. Spherical silica beads (e.g. diameter 1Á- 1-5 mm.) are prepared by agitating a single aq. phase mixture of (a) a compound xM 2 oySiO 2 , wherein M is an alkali metal and x/y is greater than 0À24, in a concentration equivalent to 50-800 m.moles SiO 2  per litre (b) (2N + A) m. equivs. of acid per litre where N is the number of m.moles of M 2 O per litre and A is 0 to 4000 (the reactant concentrations being expressed as theoretical concentrations before reaction), and (c) from 1 to 150 g./l. of a water soluble emulsifying agent at a temperature between 80‹ C. below the b.p. of the mixture up to its b.p. at the prevailing pressure for from 1 minute to 12 hours. Preferably (a) is a sodium silicate, e.g. Na 2 O 3À36 SiO 2 , (b) may be H 2 SO 4 , HNO 3 , HCl, acetic, oxalic or benzenesulphonic acid, and (c) may be an emulsifier which is non ionic, cationic or anionic but the nonylphenylether of polyethylene glycol is preferred. A compound of Al and O (e.g. kaolin) may also be added to the mixture in amounts up to 10g Neutral salts such as NaCl may also be included.
Patent GB-111339-A (GB)
Title: Improvements in Mine Signalling Systems.
IPC: B66B19/06
Filed: 1916-11-24
Abstract: 111,339. Davis & Son, J., and Davis, W. H. Nov. 24, 1916. Mine signalling systems.-In a mine signalling system, sparking at the line switch l controlling a relay winding b is prevented by shunting the winding b by a non-inductive resistance e; while sparking at the bell is prevented by placing it in a circuit containing the contacts h, n of the relay and an electro-magnetic make-and-break switch j, d, k, the contacts of which are shunted by a condenser g.
Patent GB-790185-A (GB)
Title: An attachment on tractors for handling logs
IPC: B60P3/41
Filed: 1956-05-31
Abstract: 790,185. Grab arms; lever load-handling machines. BARBER MACHINERY, Ltd. May 31, 1956 [March 1, 1956], No. 16889/56. Classes 78 (3) and 78 (4). Two pairs of forks 9, 18, the latter pair fixed to links 7, are rotatable respectively about pivots 10, 8 by hydraulic rams 15, 20 and mounted on the luffing arm 3 of an overthrow loader 1. Specification 691,893 is referred to.
Patent GB-297701-A (GB)
Title: A combined switch and holder for incandescent lamps and other electrical fittings
IPC: H01R33/955
Filed: 1927-06-25
Abstract: 297,701. Spaull, B. A. June 25, 1927. Holders.-An adaptor for lighting and other fittings comprises two relatively rotatable insulating blocks 1, 6 provided with conductors 7, 8 which can be brought into and out of register by relative rotation of the parts to switch the current on or off. Bayonet pins 3 may be attached directly to the upper block, as shown in Fig. 1, or to a metal casing in which it is placed as shown in Fig. 3. Rotation of the parts is provided for either by means of a central pivot pin 5, Fig. 1, or by the two relatively rotatable parts of an outer metal casing, as shown in Fig. 3. In the " off " position of the switch the contact plungers 8 may act as detents by engaging in recesses in the block 1, or leaf springs or balls may serve this purpose. A pin-and-slot connection 10, 11, Fig. 2, limits the rotation of the parts.
Patent GB-1487286-A (GB)
Title: Urea-formaldehyde-glyoxal textile finish
IPC: D06M15/423
Filed: 1975-04-23
Abstract: 1487286 Preparing glyoxal-modified ureaformaldehyde resins AMERICAN CYANAMID CO 23 April 1975 [22 May 1974] 16921/75 Heading C3R [Also in Division D1] A textile finishing resin is obtained by (i) condensing 1 mol of urea with 2À3-3À75 mols of formaldehyde in aqueous solution at pH 9-11 and 60-100‹ C. for 30-90 mins; (ii) acidifying the mixture to pH 3À5-4À5 and continuing the reaction at 60-100‹ C.; (iii) neutralizing the mixture to pH 5À5-7À5, adding 0À05-0À20 mols of urea and 0À1-0À25 mols of glyoxal, and continuing the reaction at 60-100‹ C. for 30- 90 mins.; and (iv) cooling the solution to 25- 40‹ C., adjusting the pH to 6-8 if necessary, and optionally diluting it to 40-50% solids. In Example 1 a mixture of urea and 44% formalin in 1 : 3À24 molar ratio is adjusted to pH 9À8-10 with 50% NaOH and heated 1 hour at 80‹ C., then brought to pH 4 with 70% HNO 3  for 30 mins.; then to pH 6À5 with 50% NaOH; then 0À125 mol. of urea and 0À175 mol of glyoxal is added and heating, still at 80‹ C., continued for 1 hr.; finally the mixture is cooled to 25‹ C. and diluted to 50% solids. Examples 2, 3 and 6 are similar. In Examples 4 and 7 cotton fabrics are impregnated with baths containing 15% of the product solutions (7-7À5% solids), 12-12À5 phr of MgCl 2  and 0À1% surfactant, to pick-ups of 4À1-6À2% (solids); the fabrics are dried at 225‹ F. and cured at 350‹, 325‹ and 300‹ F. (1¢ mins. at each stage).
Patent GB-868396-A (GB)
Title: Alcohol of improved odor from ether hydration
IPC: C07C29/74
Filed: 1959-05-20
Abstract: <PICT:0868396/IV (b)/1> In a process for the production of ethyl alcohol of improved ordour by the catalytic hydration of diethyl ether, the hydrocarbon impurities in the reaction product are extracted prior to fractionation, with diethyl ether, and separated from the aqueous ethanol portion of the effluent.  A process is described (Figure) in which reaction products from the catalytic hydration of diethyl ether at elevated temperature and pressure are led, (1) through a settler, 7, the lower alcohol-rich layer from which preferably saturated with water, is extracted with ether 10, settled 18, and the alcohol-water bottoms fractionated 21, to yield pure ethanol, or (2) through an azeotropic distillation column 26, from the bottom of which 28, the alcohol-water product is extracted with ether 10, as above or alternatively (3) a combination in which the lower B.P. impurities e.g. below about 170 DEG F. are led through a distillation zone 26, and the higher boiling compounds are settled and then the combined flows are ether extracted 10.  Examples describe the treatment of the effluent from diethyl ether hydration using a commercial ground alumina catalyst and the products have much improved odour.ALSO:In a process for the production of ethyl alcohol of improved odour by the catalytic hydration of diethyl ether, the hydrocarbon impurities in the reaction product are extracted with diethyl ether prior to fractionation, and separated from the aqueous ethanol portion of the effluent.  A process is described (Figure) in which reaction products from the catalytic hydration of diethyl ether at elevated temperature and pressure are led, (1) through a settler 7, the lower alcohol-rich layer from which, preferably saturated with water, is extracted with ether 10, settled 18, and the alcohol-water bottoms fractionated 21, to yield pure ethanol, or (2) through an azeotropic distillation column 26, from the bottom of which, 28, the alcohol-water product is extracted with ether 10, as above or alternatively (3) a combination in which the lower B.P. impurities, e.g. below about 170 DEG F., are led through a distillation zone 26, and the higher boiling compounds are settled and then the combined flows are ether-extracted 10.  Examples describes the treatment of the effluent from diethyl ether hydration using a commercial ground alumina catalyst.
Patent GB-389472-A (GB)
Title: Improvements in or relating to the terminals of switches and other electrical units
IPC: H02G3/16
Filed: 1931-06-13
Abstract: 389,472. Switch bases and contacts. CRABTREE, J. A., Endwood, Little Aston Park, Sutton Coldfield. June 13, 1931, No. 17215. [Class 38 (v).] A binding-post for a switch is formed of a short socket a with a head a<4> and an oblique clamping screw e. The socket, head, and screw are accommodated respectively in correspondingly shaped-recesses d<1>, d<4>, d<2> in the body d of the switch. The.shank a<1> of the socket is threaded to receive a collar b that fixes the binding-post and secures the switch contacts c.
Patent GB-333671-A (GB)
Title: An improved plasterers' metallic angle bead for walls
IPC: E04F13/06
Filed: 1929-06-05
Abstract: 333,671. Blakey, J. B., and Blagg & Johnson, Ltd. June 5, 1929, Plastering. - Angle beads consist of a sheet metal strip bent centrally to form a bead A, and with perforations a made in the wings and continued up to the bead and of such shape that they do not diminish in size at the bead. The perforations may be oval, triangular, square, or rectangular.
Patent GB-891254-A (GB)
Title: Improvements in or relating to bunks for automobiles
IPC: B60N2/28
Filed: 1959-05-21
Abstract: 891,254. Cots. LOVERING, R. G. May 11, 1960 [May 21, 1959], No. 17237/59. Class 52(2) A child's bunk, consisting of a canvas covering on a collapsible rectangular tubular metal frame, is supported in a vehicle by engagement of forked members 8, at one end, with the back rest 10 of a seat. The frame is made in detachable sections 1, 2, 3a, 3b, 4a and 4b, sections 2, 3a and 4a having spring detents (Fig. 3, not shown) at both ends which engage holes, such as 5, in sections 1, 3b and 4b. Foldable legs 15 are provided. According to the Provisional Specification, the canvas covering is attached to the frame by cords and the cot may be supported on a vehicle window frame.
Patent GB-255443-A (GB)
Title: Improvements in or relating to retarding devices for automatic fire arms
IPC: F41A19/03
Filed: 1926-07-09
Abstract: 255,443. S.A.F.A.T. Soc. Anon. Fabbrica Armi-Torino. July 17, 1925, [Convention date]. Machine guns.-A retarding device for regulating the rate of fire comprises a reciprocating mass adapted to be set in motion by the striker during the first part of its forward stroke. As shown in Figs. 1 and 2, the striker 1, during the first part of its forward stroke, rotates a pinion 6 the teeth of which are engaged by an escapement anchor 8. The rear part of the striker is formed with quick-pitch screw threads 2 adapted to engage spring-pressed balls 3 mounted in inclined recesses in the boss 5 of the pinion 6, so that, during the rearward stroke of the striker, the balls are pressed in without rotation of the pinion, but during the forward stroke the pinion is rotated. In a, modification, Fig. 4, the screw 2 on the striker 1 is engaged by a divided nut 12 pressed forwards against a conical seat in the pinion boss 5 by a spring 13. During the rearward stroke the nut is lifted from the conical seat so that it is unclutched from the pinion. The Specification as open to inspection under Sect. 91 (3) (a) comprises also the application of the device to retarding the forward movement of the breech-block. This subject-matter does not appear in the Specification as accepted.
Patent GB-345163-A (GB)
Title: Improvements in or relating to waterproof aprons
IPC: A41D13/04
Filed: 1930-06-04
Abstract: 345,163. Waterproof driving aprons. HARTMANN, C. F., 53, Muldenstrasse, Berne, Switzerland. June 4, 1930, No. 17256. [Class 141.] Waterproof driving aprons are made with the lower edge capable of being turned up to form a channel for collecting the rain and leading it clear of the wearer's limbs. As shown in Figs. 2 and 3, the apron 1 is provided, adjacent its lower edge, with a button 2 for engagement with buttonholes 3, 4 to enable the lower part to be doubled twice, as shown in Fig. 3, to provide a channel 5 for the collection of the rain water. As shown in Fig. 6, the lower part of the apron is only folded once to form the channel 15. In another construction, a removable stud engaging corresponding holes replaces the button. There may be any number of fastenings across the width of the apron.
Patent GB-1518321-A (GB)
Title: Chemical cleaning
IPC: C23G1/02
Filed: 1976-06-30
Abstract: 1518321 Chemically cleaning metals BURMAH OIL TRADING Ltd 30 June 1976 [25 April 1975] 17301/75 Heading C7E Surfaces, particularly the interior surfaces of steam boilers are cleaned by contacting the surface with an aqueous solution comprising a polycarboxylic acid containing at least 3 carboxyl groups and/or an anion derived from said acid. The acid which is obtained by oxidizing Diels-Alder reaction product of a conjugated diene and a dienophile is preferably 2, 3, 5 tricarboxycyclopentane acetic acid in a concentration of 0À1-6 wt. per cent and a pH of 1-6.
Patent GB-758405-A (GB)
Title: Improvements in or relating to electromagnetic relay circuits
Inventor: BRIDGES JAMES WALTER OSWALD
IPC: H04Q3/00
Filed: 1954-06-12
Abstract: 758,405. Automatic exchange systems. AUTOMATIC TELEPHONES & ELECTRIC CO., Ltd. May 25, 1955 [June 12, 1954], No. 17342/54. Class 40 (4). [Also in Group XXXVII] A two-step relay LK acting as a combined line and cut-off relay is adapted for use with lines of different resistance by the provision of two differentially-arranged line windings, one being connected to the line directly and the other, which produces less magnetic flux, in series with a resistance NLR which varies inversely with applied voltage. The relay operates only its first-step contacts x when the line is looped and full operation takes place when the third (cut-off) winding is energized.
Patent GB-1300626-A (GB)
Title: Method and apparatus for dielectric heating
IPC: B29C35/04
Filed: 1970-04-13
Abstract: 1300626 Microwave heating PAUL TROESTER MASCHINENFABRIK 13 April 1970 [25 April 1969] 17373/70 Heading H5H Plastics, rubber wound strands of polyester glassfibre or other articles are dielectrically heated by passing them through a waveguide 3 supplied with travelling microwave energy and intersected at spaced points along its length by a waveguide 1, 2 supplied with travelling waves. As shown, two meander shaped rectangular waveguides 1, 2 excited in the H 10  mode intersect a circular waveguide 3 at spaced points and are adjustably secured by a telescopic U-shaped waveguide 12 to a magnetron 14. Adjustment of waveguide 12 by hand or by eccentric 13 ensure that articles on conveyer 6 occupy the best position for even heating. Vertically adjustable rollers 9 supporting conveyer 6 enable coarse adjustment of this position. By arranging the rollers 9 so that the conveyer is inclined to the horizontal different parts of non-uniform articles pass successively through the best position for even heating. Waveguide 3 has wave traps 5 at its ends and a rectangular cavity resonator 4 at its centre brought into resonance by hand or automatic adjustment of a slide 17 in branch 16. Hot air or protective gas is introduced via branch 16 to waveguide 3 which is lined by two interfitting U-shaped P.T.F.E. members 21, 22 which are tensioned by springs 23 at the ends of waveguide 3. Water loads 10, 11 are provided at the ends of guides 1, 2. The angle of intersection of the travelling microwave energy trains can vary from 45 to the 90 degree shown. The respective degree of coupling to the waveguides 1, 2 can be altered by moving magnetron 14 in the direction of the arrow. The waveguides 1, 2 can be independently excited.
Patent GB-297873-A (GB)
Title: Improvements in or relating to portable tar-boiling apparatus and the like
IPC: C10C3/12
Filed: 1927-06-30
Abstract: 297,873. Johnston, J. T. M. June 30, 1927. Cauldrons. - Relates to portable tar-boiling apparatus of the kind in which a tar receiver 15 has a curved heating surface forming a division over which the tar passes in a thin stream from a cold compartment to a hot one, the furnace, 16 being provided with smoke flues 30 to heat the tar in the receiver. According to the invention, each smoke flue is jointed to the end wall 31 of the receiver below the level of tar in the receiver, and rises towards the furnace to prevent tar, which may leak through a joint, passing back to the furnace. Further, the joints are readily accessible from the exterior of the apparatus through doors 32. In the form of tar heater shown, a tar boiler 13 is fed by a pump 22 with tar from the receiver 15 and the smoke-box 25, 26 of the receiver is situated below the tar boiler, the furnace 14 of which leads bv flues 28 and passage 29 to a common uptake 21. The smoke flues 30 have their highest parts above the tar level and form a grid for premelting solid tar.