baber/WOPTO huggingface dataset:
Patent GB-605999-A (GB)
Title: Process for the production of coumarins
IPC: C07D311/46
Filed: 1946-02-07
Abstract: 4-Hydroxycoumarins are prepared by condensing a dialkyl or diaralkyl carbonate with an o-hydroxyacylophenone of the formula <FORM:0605999/IV(b)/1> in which R is an alkyl group, in the presence of an alkali metal alcoholate, whether added as such or formed in situ, and treating the resulting product with acid.  An excess of the carbonate may be employed, and a solvent (e.g. benzene, toluene, or xylene) forming a low-boiling azeotrope with the alcohol liberated may be used.  The ketone reactant may be o-hydroxybutyrophenone, or may have substituents such as alkyl groups in the benzene ring.  The products may be condensed with aldehydes to give dihydroxy dicoumarins, e.g. with formaldehyde to give 3.31-methylene-bis-(4-hydroxycoumarin).  In examples: (1) sodium ethoxide, diethyl carbonate and o-hydroxyacetophenone or o-hydroxypropiophenone are reacted together to give 4-hydroxycoumarin; (2) dibenzyl carbonate is reacted with o-hydroxyacetophenone and with either sodium or sodium and alcohol to give 4-hydroxycoumarin.
Patent GB-715732-A (GB)
Title: Improvements in or relating to printing machines
IPC: B65H5/34
Filed: 1952-02-14
Abstract: 715,732. Feeding sheets. FABER & SCHLEICHER AKT.-GES. Feb. 14, 1952 [March 10, 1951], No. 3953/52. Class 100 (1) In a printing-machine having a co-operating sheet-feeding mechanism coupled to the main drive of the machine by mechanical transmission gearing, the transmission gearing includes a pair of helical gear wheels one of which can be axially displaced to advance or retard the main drive of the sheet-feeding mechanism relatively to the main drive of the machine during the operation of the machine. As shown, the transmission gearing comprises a driving shaft 8 which drives through gears 9, 11 a member 11a freely rotatable, but not axially-displaceable, on a shaft 10. A helically-toothed wheel 12 on the member 11a meshes with a similar but broader wheel 14 secured on a shaft 13 which drives a shaft 3, connected to the sheet-feeder, through bevel wheels 49, 50. The shaft 10 is non-rotatably mounted in walls 15, 16, and can be shifted axially by a hand-wheel 17 engaging a screwthread on the shaft, so that, due to the helical teeth on the wheels 12, 14, an angular relative displacement occurs between the shafts 8 and 13.
Patent GB-161382-A (GB)
Title: Improvements in wall coverings
IPC: E04F13/08
Filed: 1920-02-10
Abstract: 161,382. Browne, A., (Bishopric (nÚe Phillips), L.). Feb. 10, 1920. Walls.-To save overlapping in weather-boards, a backing 2 of heavy cardboard or paper is secured to each board by asphaltmastic 3 or like adhesive and projects at the top edge to form a sealing-flange 4. The boards may be nailed to the studs with or without under - sheathing as usual, and the flanges 4 may be heated to cause them to adhere to the backing above.
Patent GB-346894-A (GB)
Title: Improvements in or relating to vulcanizing india rubber or the like
IPC: C08J3/24
Filed: 1930-02-06
Abstract: Cold methods.-Rubber articles of a substantial thickness vulcanized through their entire mass are produced by a modification of the method of the parent Specification, which modification consists in using crepe rubber as commercially produced in thin sheets perforated by numerous holes.  The sheets are placed loosely in a mould, soaked with a suitable vulcanizing fluid, e.g. 3 per cent chloride of sulphur and 97 per cent bisulphide of carbon, and pressed.  In a modification of the invention, a thin sheet of crepe rubber impregnated with vulcanizing fluid may be used to join two sheets of material other than crepe rubber, the whole being pressed together without heat. p  Known neutralizing agents such as magnesium carbonate &c. may be applied to the sheet before or during the application of the vulcanizing fluid.
Patent GB-524792-A (GB)
Title: Improvements in and relating to holders for rolls of paper and other material
IPC: B65H35/00
Filed: 1939-02-08
Abstract: 524,792. Holders for rolls of paper &c. LAYFIELD, F. Feb. 8, 1939, No. 4098. [Class 18] A roll of corrugated paper &c. is supported on a stand A, Fig. 3, any required length being severed by a circular rotary knife L mounted in a carriage M slidable along a guide N by a handle, the blade passing between cutter bars j. The paper, corrugated side uppermost is passed between a pivoted cranked arm H and a roller G, arm H normally resting in a corrugation of the paper. Collars p exert a braking action and collars o position the free end.
Patent GB-429009-A (GB)
Title: Improvements relating to pumps for gas analysers
IPC: G01N1/00
Filed: 1935-02-08
Abstract: 429,009. Pumps for gas analysis. MAIHAK AKT.-GES., H., 54, Geibelstrasse, Hamburg, Germany. Feb. 8, 1935, No. 4165. Convention date, Feb. 12, 1934. [Class 8 (i)] The flow of gas through measuring and absorption vessels is effected by rise and fall of liquid, e.g. mercury in vessels q, s. The liquid is forced into the vessels by a plunger a actuated by a cam h driven by a motor k. At the end of the down stroke a lever l carrying a mercury switch engages a notch in a disc i rotating with the cam, and stops the motor. The plunger rises solely by the buoyancy of the liquid, which flows back through a restricted orific o, until a projection from the plunger rod engages the lever, thus causing the motor to restart.
Patent GB-671151-A (GB)
Title: Improvements in or relating to the tread formation of balloon tyres
IPC: A47J43/046
Filed: 1950-02-20
Abstract: 671,151. Pneumatic tyres. SEMPERIT OSTERREICHISCH - AMERIKANISCHE GUMMIWERKE AKT.-GES. Feb. 20, 1950 [March 18, 1949], No. 4245/50. Class 144 (ii). A tread for a balloon tyre comprises a base portion a<SP>1</SP> of normal thickness and a non-skid road-engaging portion having a thickness from 11 per cent to 20 per cent of the tread width b and formed with a central rib 5 and inner and outer side ribs 6, 7, the ribs being spaced by annular grooves 9, 10. The ribs 6, 7 are divided into blocks 13, 15 spaced by transverse grooves 12, 14 respectively. Individual blocks 13, 15 correspond to <SP>1</SP>/ 50  th to <SP>1</SP>/ 100  th and <SP>1</SP>/ 100  th to <SP>1</SP>/ 200 th of the tyre circumference, respectively; and the grooves 12 are narrower than the grooves 14.
Patent GB-703523-A (GB)
Title: Improvements in lubricant level gauging means for sewing machines
IPC: G01F23/34
Filed: 1952-02-19
Abstract: 703,523. Lubricating. UNION SPECIAL MACHINE CO. Feb. 19, 1952 [Feb. 20, 1951], No. 4320/52. Class 12(3) A sewing machine has a lubricant reservoir in which an indicator such as a needle pointer or arm is pivoted and is subject to the influence of a float buoyed by the lubricant, so that the level of the lubricant can be indicated by the position of the pointer, which is visible through a transparent window or dial provided at a position above the level of the lubricant. In the overedge sewing machine shown in Fig. 1 the driving mechanisms and associated devices are lubricated by a lubricant contained in a reservoir 13, which has a removable base 14. A bracket 30 attached to a lug 31 by screws 32 has a bifurcated arm 33 carrying a pivot pin 34 on which is mounted a bell-crank lever 35. Arm 37 terminates in a pointer 38 and the free end of arm 36 is pivoted to a float member 40. A window 41 is supported in the wall of frame 10, opposite the pointer 38, by a ring 42 and is graduated so that the float-controlled pointer may indicate whether the reservoir 13 is full, halffull, or empty. The operation devices and mechanisms for stitching &c. may be similar to, or the same as, those described in Specification 691,894, [Group VII]. In the flat bed sewing machine shown in Fig. 2, a graduated window 112 is sealed within the cloth plate 52 and has two depending arms 113 carrying a pin 119 on which is pivotally mounted an L-shaped lever comprising a pointer arm 118 and an arm 117 provided with a float 120. The float rests on oil in a reservoir 105. The float is surrounded by a tubular baffle 123 formed with a slot to accommodate the arm 117, the baffle acting to shield the float against tuibulance in the oil reservoir. Oil is conveyed to the arm 54 of the machine by a splashing ring 110 on a rotating shaft 80 and by a belt 78 engaging pulleys on shafts 80 and 57. The oil is transmitted to wicking 70, 71, and 74 whereby the bearings of shaft 57 and devices in the needle head are lubricated. Co-operating with the needle is a threadcarrying looper 90 which with its associated parts may be similar to corresponding parts described in Specification 687,812, [Group VII]. In the construction shown in Fig. 8, the indicator 155 is made of magnetic material and consists of a pointer arm 157 and an arm 156 placed opposite a magnet 168 which is secured to a float 169 by a rod 166 slidable through openings in a bracket 158. The float and magnet are prevented from rotational movement by a rod 170 extending through an opening 165 in the bracket.
Patent GB-571656-A (GB)
Title: Improvements in commutating electric converters
IPC: H02M1/26
Filed: 1942-04-21
Abstract: 571,656. Converting. GENERAL ELECTRIC CO., Ltd., and FRIEDLANDER, E. April 1, 1942, No. 4361. [Class 38 (ii)] In a moving contact converter of the kind in which saturable chokes 18, 19, 20 are connected in series with the contacts 6 ... 11 so as to offer a high impedance to current of low value, sparking at the contacts is further reduced by connecting condensers 12, 13, 14 permanently across the A.C. leads so that a condenser becomes connected across the opening pair of contacts at each commutation by closure of the next pair of contacts to conduct. Protective devices 15, 16, 17, e.g. of the kind described in Specification 530,963, may be associated with the condensers to prevent an undue rush of current when the latter are discharged by closing of a pair of contacts. The Provisional Specification also refers to Specifications 118,762, [Class 38 (ii)], and 492,369.
Patent GB-846878-A (GB)
Title: Improvements in or relating to divans
Inventor: MILTON WILLIAM FRANK
IPC: A47C19/02
Filed: 1956-02-11
Abstract: 846,878. Beds. PRICE BROS. & CO. Ltd. April 17, 1957 [Feb. 11, 1956], No. 4361/56. Class 52(2) Two single divans 1, 2 are connected together side by side to form a double divan by a head board 4 having four depending members 5, 5, 5, 5 the lower ends of which have slots 6, 6, 6, 6 to engage threaded studs 3, 3 on each divan and be retained by nuts. The divans may also be connected at the foot by hook and eye or spring latch or other means.
Patent GB-470190-A (GB)
Title: A device for the shaping of the colouring used for lips, eyebrows and eyelashes
IPC: A45D40/30
Filed: 1936-02-13
Abstract: 470,190. Devices for use in colouring lips, eyebrows, and eyelashes. LEVY, A. Feb. 13, 1936, No. 4413. [Class 81 (ii)] A device for use in colouring the lips comprises a celluloid, metal, or cardboard stencil plate, Fig. I, having lip-shaped stencil openings A and turned over edges B in which slide a pair of plates D having openings A<1> corresponding to the ends of openings A. By sliding the plates D inwardly the openings A may be shortened and modified in shape. The device is secured over the mouth in use by an elastic cord attached by holes C. For eyebrows a pair of stencil plates, each having a slide at its outer end, are connected together by an elastic cord and secured to the head by an elastic loop attached to holes in the upper outer edges of the plates. For colouring eyelashes an oval plate E, Fig. VI, is formed to serve as a rest for the lashes by making an arcuate slit in the upper portion of the plate and bending the rest portion F outwardly therefrom.
Patent GB-1043062-A (GB)
Title: Throwing game kit
IPC: A63F9/02
Filed: 1965-02-02
Abstract: 1,043,062. Games;toys. K. L. SAHLSTEN. Feb. 2, 1965 [Feb.12, 1964], No. 4442/65. Headings A6D and A6S. Targets 3 for use in a throwing game are each formed with a recess 5 for housing an explosive marker member 7, the arrangement being such that when a direct hit is scored on the marker member, the latter is automatically detonated and ejected from the housing. The marker member is constructed to explode when forced down on to a pointed stud projecting from the bottom of the housing. In use,disc-like projectiles are thrown at an array of the targets set out on the ground
Patent GB-105242-A (GB)
IPC: B60S1/02
Filed: 1917-03-30
Abstract: 105,242. Nonnenbruch, O. H. Oct. 6, 1915, [Convention date]. Void [Published under Sect. 91 of the Act]. Wind and like screens or deflectors.-To preserve a clear view through windows, locomotive and car look-outs, wind-shields, &c. that are subject to the deposition of moisture or snow the transparent material is made to revolve rapidly to throw off the moisture &c. by centrifugal force. In one form, a revolving glass disk 9, Fig. 2, is carried by a shaft 10, which rotates in a bearing 11 carried by a fixed glass plate 8. A protecting- ring 16 mounted on the plate 8 projects over the edge of the disk and has a draining-hole 18 at the bottom. In a similar form, the plate 8 is provided with an opening which is completely covered by the disk 9. In the form shown in Fig. 4, the shaft 10 carrying the rotating disk 9 is supported by a cross-bar 19, which is secured to the window frame; motion is communicated to the shaft 10 by a flexible shaft 22, and the disk 9 rotates in a grooved ring 16. In the form shown in Fig. 7, the disk 9 is fixed by a ring 24 in a frame 25, which runs on ball bearings in the supporting- frame 29 and has a pulley flange 27 for a cord 28.
Patent GB-1094747-A (GB)
Title: Improvements in and relating to the vaporisation of materials
Inventor: ARDENNE MANFRED VON
IPC: C23C14/24
Filed: 1965-02-03
Abstract: <PICT:1094747/C6-C7/1> Vapour deposition apparatus providing a constant rate of vaporization comprises an open ended crucible 1 having water cooled walls 3 through which a rod 2 of material to be evaporated is fed upwardly, either continuously or in steps, to maintain the position of the upper surface 6 of the rod constant. The feed device 4 is thermally insulated by a plate 5 and surrounded by a thermal shield 10.  The surface 6 is melted by an electron beam 7 and to ensure that the rim 12 of the surface is also melted the beam is deflected on a circular or spiral path to cover the rim and heat loss from this region is reduced by extending the walls 13 outwardly to prevent contact between them and the rim. Powdered or granular material may be evaporated in which case device 4 is inside the crucible.  Electric resistance heating may be used; the crucible, then is not water cooled.
Patent GB-575407-A (GB)
Title: Improvements in and relating to apparatus for wiping down spinning mules
IPC: D01H11/00
Filed: 1944-03-17
Abstract: 575,407. Cleaning spinning mules. BRISCOE, J., and CANNON BROS., Ltd. March 17, 1944, No. 4997. [Class 120 (iii)] In apparatus for wiping down a spinning mule, the mule carriage 10 is provided with wipers 7, 8, 20 mounted on a carrier 6 which is traversed the length of the carriage, in both directions in intermittent motions, by means of a wire 13 which is pressed against a plate 14 by a click spring 15. The wire 13 is moved by a lever on the carriage contacting a stop during the run-in movement, the wire being returned by a spring and lever at the other side of the carriage. When the motion of the carrier to one side of the carriage brings it against a stop, the click spring 15 is positively moved so that intermittent motion of the carrier will then ensue in the opposite direction. The front part 9 of the carrier 6 is hinged thereto in order to "give to obstructions. The roller beam wiper 20 is hingedly carried by a stirrup 17 spring biassed at 18. A fixed wire 12 constrains the carrier 6 to move in a straight line.
Patent GB-537724-A (GB)
Title: Change speed, and, or, reversing devices for driving machinery, machine tools, and the like
IPC: F16H59/04
Filed: 1940-03-19
Abstract: 537,724. Change-speed gearing. PRICE, F. P. March 19, 1940, No. 5050. [Class 80 (ii)] In a drive for machine tools and the like, a shaft or screw D is driven at normal speed by a train F, shaft. B, and clutch J, or is driven at low speed by a train E, pinion K, clutch L, countershaft C, and gears G, the clutches being engaged alternatively, with a neutral position, by means of a hand lever M. The trains and the gears G can be changed to vary the speeds, or to provide for a reverse drive. The trains may include sprocket-gearing. The shafts D, C may be associated with further trains of gearing for obtaining additional direct or reverse gear-ratios.
Patent GB-451285-A (GB)
Title: Improvements in or relating to spring mattresses
IPC: A47C23/32
Filed: 1935-02-16
Abstract: 451,285. Mattresses. HEAL, H., RUSSELL, J., and STAPLES & CO., Ltd., Edgware Road, Cricklewood, London. Feb. 16, 1935, No. 5064. [Class 52 (iv)] A resilient border frame 16 is mounted on the springs 15 of a mattress having a surface of inextensible cords or strips 35 resiliently secured to the border frame. The latter is preferably provided with a guide linkage 23, 24 to prevent lateral deflection. Rings 40 are used to connect the cords to the upholstery springs and the cords preferred have stranded steel cores, rubber coated and braided with fabric containing a lubricant.
Patent GB-1249091-A (GB)
Title: Reactivating silver catalysts used in formaldehyde production
Inventor: WOLZ HERMANN
IPC: B01J23/96
Filed: 1970-02-03
Abstract: 1,249,091. Formaldehyde. FARBENFABRIKEN BAYER A.G. 3 Feb., 1970 [5 Feb., 1969], No. 5074/70. Heading C2C. In the production of formaldehyde by the air oxidation of methanol using a silver crystal catalyst, the catalyst is reactivated by removing the surface thereof, e.g. by wire brushing, and replacing it with a new surface of fresh silver crystals. About 5 to 20% of the silver may be removed and replaced by up to 50% by weight of the catalyst of fresh crystals.
Patent GB-348217-A (GB)
Title: Improvements in visible indexing
IPC: B42F17/00
Filed: 1930-02-15
Abstract: 348,217. Indicators directly operated by hand for displaying variable information. GARROW, R. P., 62, Gt. North Road, Highgate, London. Feb. 15, 1930, No. 5111. [Class 118 (i).] A panel a is provided with guides b to receive the folded ends of interchangeable strips c for index purposes.
Patent GB-585333-A (GB)
Title: Improvements in or relating to liquid-fuel burners
IPC: F23D11/04
Filed: 1941-04-21
Abstract: 585,333. Burners. GRIFFITHS, A. A. April 21, 1941, No. 5153. [Class 75 (i)] [Also in Group XXVI] A burner or carburetting device for a gas turbine comprises a fan-like structure, through which the combustion air flows and by which it is rotated, and liquid fuel nozzles 15 which project the fuel radially on to the backs of the rotation blades 14. In an alternative form, the fuel is supplied by a pipe 26, Fig. 4, to an annular channel 25 in a sidewall of the casing, passes into tubular portions 22 of some of the blades and is ejected through holes 23. The rotor may be driven at starting and may be used for driving an auxiliary during running. The fuel may be supplied by a variable delivery pump controlled by the power-output of the turbine. Specification 585,330, [Group XXVI], is referred to.
Patent GB-1094521-A (GB)
Title: Heating and cooling system for vehicles
IPC: B60H1/00
Filed: 1965-02-05
Abstract: 1,094,521. Ventilating vehicles. LUWA A.G. Feb. 5, 1965 [Feb. 7, 1964], No. 5153/65. Heading F4V. A railway vehicle having compartments C and a corridor D includes a pipe 9 extending along the corridor for supplying heated air to the compartments and serving as heat source for a convector arranged along the exterior corridor wall. Fresh air is drawn into a unit A below the floor of the vehicle by a fan 2 and is passed through a filter 4 to a heater 5 and cooler 6. Air from the heater and cooler passes via ducts 9 and 10 to a mixing chamber 12 in each compartment under the control of valves located at the mixing chamber and is supplied thence to induction units arranged below the compartment windows.
Patent GB-691223-A (GB)
Title: Improvements in thermostat devices
IPC: G05D23/275
Filed: 1951-03-05
Abstract: 691,223. Thermal switches. PIERCE FOUNDATION, J. B. March 5, 1951 [March 16, 1950], No. 5236/51. Class 38(v) In a thermal switch differential expansion of a rod 19 and sleeve 17 actuates through multiplying levers 24, 25 a snap-over disc 35 which in turn actuates switch contacts. To effect this the disc 35, in moving to its other configuration may operate a push rod 37 carrying a contact-carrying member 39 thereby moving contacts out of engagement with fixed contacts. The above action takes place against the action of two return springs 52 which are however too weak to return the snap spring to its original configuration. This latter is effected by means of a key which is inserted through a hole 54 and is pressed against the push rod 37. Alternatively the thermal elements may reset the snap spring.
Patent GB-666155-A (GB)
Title: Improvements in or relating to photographic contact printing apparatus
Inventor: BOWLER VALENTINE MARCUS
IPC: G03B17/24
Filed: 1949-02-25
Abstract: 666,155. Photographic contact printing. KODAK, Ltd. Feb. 24, 1950 (Feb. 25, 1949], No. 5264/49. Class 98 (ii). In photographic contact-printing apparatus of the type having a numbering device mounted on a pressure plate such that, upon movement of the latter to an operative posi.- tion to press a sheet of photographic paper into contact with a negative, the numbering device comes into contact with the rear surface of the paper thereby stamping an identification number thereon, the pres. sure plate is brought into its operative position by means of a member having a lost-motion connection therewith, and the numbering device is caused or permitted to move to an inoperative position in which it is out of contact with the paper by the further movement of the member relative to the pressure plate. As shown, a base-plate 5 has lugs 4 carrying a hinge pin 3 for a plate 1 to which a pressure plate 6 is attached by headed studs 7 and springs 8. Plate 1 is formed as a frame or with an aperture through which passes a pair of members 10, mounted on a corner of plate 6 remote from the hinge. A U-shaped frame 14 for a numbering device 15 is connected by links 18 to the members 10, and projections 13 on frame 14 slide in slots 12 formed in members 10. A yoke 20 pivoted on pin 3 has arms 21 slotted at 22 to engage pins 13, so that when yoke 20 is moved away from the platen as by a spring 24, frame 14 is swung to a position wherein the numbering device is inoperative. When the platen is raised yoke 20 is held against a stop and the device 15 is brought to an operative position and held there by a latch (not shown), engaging frame 14. When the platen is brought down on a piece of printing paper in contact with a negative, the device 15 stamps a number on the back of the paper through apertures in plates 1, 6. Immediately thereafter pressure on plate 1 compresses springs 8 and as plate 1 approaches plate 6 the latch is released and yoke 20 returns the numbering device to inoperative position. During its movements the device 15 may be inked as by a roller 32 on spring-urged arms 34 pivoted to the yoke. The digits on device 15 may be carried on endless rubber or metal bands, and may be changed automatically in sequence at each operation.
Patent GB-726087-A (GB)
Title: Grinding of teeth and grinding means therefor
IPC: A61C3/06
Filed: 1953-02-25
Abstract: 726,087. Dental grinding apparatus. WEIGELE, B. Feb. 25, 1953 [Feb. 26, 1952], No. 5333/53. Class 81 (2). Grinding means, primarily for use in preparing teeth for jacket crowns, comprises a flexible abrasive strip 1 carrying attachment means 2 at its ends by means of which it is mounted on two pins 4 which are reciprocated in opposite parallel directions by a hand piece 3 so that the band receives a longtiudinal reciprocatory movement around the tooth. The angle between the two limbs of the strip 1 may be adjusted by mounting an intermediate member on each pin 4, this having three pins any one of which may be used to carry the end of the band 1. The band may be of paper, cloth or metal and may be straight, curved or V-shaped.