baber/WOPTO huggingface dataset:
Patent GB-198111-A (GB)
Title: Improvements in or connected with motor-driven lawn mowers
IPC: A01D34/47
Filed: 1922-03-10
Abstract: 198,111. Stirling, E. M. March 10, 1922. Lawn - mowers. - A motor - propelled lawnmower is provided with an internal combustion motor a having its shaft disposed longitudinally of the machine and carrying a worm d arranged to gear with a worm-wheel on a transverse countershaft f mounted in selfaligning bearings in a tubular casing g. The motor and the countershaft are fitted in a frame b having side-plates b<1> which are adjustable about a pivot at the rear of the machine, the adjustment being accomplished by vertical screws extending from a transverse yoke-piece r straddling the main frame ; clamping screws passing through slots in plates o on the side plates b<1> - secure the frame b in its adjusted position. The - countershaft is fitted with sprocket-and-chain gear at its ends to drive the ground rollers h and the rotary cutters j, clutches m<1>, m being provided to permit disconnection of either or both the drives at will. The tubular casing g is fitted with a removable cover and forms an oil-bath for the driving-mechanism which is thus protected from dirt and grass cuttings.
Patent GB-333196-A (GB)
Title: Improvements in compound for the impregnation of cable insulation
IPC: H01B3/20
Filed: 1929-03-05
Abstract: 333,196. Hercules Powder Co., (Kennedy, G. F.). Dec. 24, 1928, [Convention date]. Proofing permeable materials. - The paper taping of cable insulation is impregnated with a composition containing substantially pure and substantially unoxidized abietic acid. The abietic acid may be present in any of its stereoisomeric forms and in amounts from 5 to 50 per cent and a hydrocarbon oil may be incorporated in the composition.
Patent GB-573523-A (GB)
Title: Improvements in or relating to electrical hot-plates
IPC: F24C15/10
Filed: 1944-04-18
Abstract: 573,523. Electrically-heated hot plates. GILBERT, E. R. April 18, 1944. No. 7185. [Class 39 (iii) ] An electrically-heated cooking appliance has one or more hot-plates 21, provided with L-shaped spigots 22 which are inserted into the sockets 24 formed on the walls 10, 11, 12 of an open-topped box-like base, thus detachably supporting the hot plates. The hot plates 21 and the walls 10, 11, 12 are provided with the two parts 23 and 25 respectively of the multi-pin electrical connectors from which connections are made to the corresponding switches 26. A top plate 16 resting on the walls of the box-like base is provided with apertures to accommodate the hot-plates 21 under which is slid a drip pan 19.
Patent GB-550482-A (GB)
Title: Ringbinder
IPC: B42F13/16
Filed: 1941-06-07
Abstract: 550,482. Loose-leaf binders. HIRSCH, C. June 7, 1941, No. 7222. [Class 146 (i)] A loose-leaf binder for perforated sheets consists of two or more open rings 21 carried by a straight rod or strip 20, the free ends 24 of the rings being bent slightly outwards, so that they can be clipped under the rod in order to close the binder.
Patent GB-835841-A (GB)
Title: Improvements in or relating to compositions comprising polyoxymethylene
IPC: C08K5/132
Filed: 1958-03-06
Abstract: A polyoxymethylene or ester or ether thereof having a number average molecular weight of at least 20,000 contains 0.1 to 5% by weight of a photostabilizer of formula <FORM:0835841/IV (a)/1> where X is hydrogen, hydroxyl or halogen, and the carbon atoms in the 3-, 4-, 5- and 6-positions on each ring are bonded to hydrogen, alkyl, alkoxy or halogen.  In examples polyoxymethylene diacetate contains 2,21-dihydroxyl4,41 - dimethoxybenzophenone, 2,21 - dihydroxy - 4 - methoxybenzophenone, 2 - hydroxy - 4 - methoxy - 41 - chlorobenzophenone, 2 - hydroxy - 4 - methoxybenzophenone. Other compounds are mentioned.
Patent GB-683802-A (GB)
Title: Improvements in or relating to high-frequency impedances
Inventor: COLLARD JOHN
IPC: H01P5/02
Filed: 1949-03-17
Abstract: 683,802. Wave-guides; impedance matching. ELECTRIC & MUSICAL INDUSTRIES, Ltd. March 7, 1950 [March 17, 1949], No. 7275/49. Class 40 (viii). A rectangular wave-guide 1 is coupled to an adjacent guide, not shown, by a coupling flange 2 in which, in order to prevent leakage, there are cut channels 3 running the whole width of the larger dimension of the guide, and slots 4. The slots 4 are a quarter-wavelength deep and are a quarter-wavelength from the broad side of the guide. To simplify manufacture, the slots 4 have the form in plan shown in Fig. 3, that is a segment of a circle, the centre being just outside the flange. This enables the slot to be cut by a simple milling cutter. The effective depth of the slot may be increased by a filling of polystyrene. Fig. 4 shows a recess 8 of the same shape as slot 4 used as an impedance transformer between a normal sized guide (not shown) and a very narrow guide 5 adapted for feeding a crysal detector 6 as described in Specification 650,614.
Patent GB-563827-A (GB)
Title: An improvement in or relating to dies for wire-drawing machines
IPC: B21C3/14
Filed: 1943-05-10
Abstract: 563,827. Drawing-dies. BARRON, C. A., and BARRON, H. D. May 10, 1943, No. 7338. [Class 83 (iv)] Casings a for the apertured pellet bused in wire drawing are provided with axial, circumferential or helical ribs a<1> to assist in cooling. The ribs may be interrupted to form a series of projections, preferably staggered..
Patent GB-199104-A (GB)
Title: Improvements in or relating to parachutes
IPC: B64D17/02
Filed: 1922-03-13
Abstract: 199,104. Democratis, S. J. March 13, 1922. Parachutes.-A parachute or part thereof is. formed with the warp and weft of the fabric arranged at an angle to the line of pull of the load. The parachute is formed in panels stitched together with zig-zag stitches as shown in Fig. 6 and hemmed at its lower edge. Where fabric cut on the bias is not wide enough to fill a panel the corner may be filled by an additional triangular piece as shown in Fig. 5.
Patent GB-511710-A (GB)
Title: Improvements in or relating to combination tools
IPC: A01B1/22
Filed: 1938-03-09
Abstract: 511,710. Combination tools; handle fixing, bullet shields. CADDY, S. C., and PEYER, E. E. V. DE. March 9, 1938, No. 7409. [Classes 61 (i) and 61 (ii)] [Also in Group X] A combination tool comprising a pick 14 and spade or mattock 13 is mounted on a handle 1 for using it as a spade as shown in Fig. 10 by engaging a transverse key-hole slot 18 in the tool with an L-shaped hook 5 on the handle ferrule 2 whilst the tool is held in the dotted line position, rotating the tool into the full line position to lock the hook 5 in the key-hole slot 18 and then sliding the ring 8 over the pick point. The tool is fixed on the handle in position for use as a pick or mattock as shown in Fig. 11 by passing the ferrule 2 through a hole 15 in the tool with projections 3, 4 on the ferrule entering notches 16, 17 at the edge of the hole and then rotating the handle so that the projections 3, 4 ride up inclines 20, 21, Fig. 8, causing the tool to be jammed against a collar 6 on the ferrule; the tool is then locked by sliding forward the ring 8 which has a projection 9 entering a notch in the collar 6 and a notch 16' in the tool. The tool may be held on the handle in non-operative position for carrying as shown in Fig. 13 by the cooperation of the hook 5 with a second key-hole slot 19 aided by the sliding ring 8. Fig. 14 shows the use of the tool as a rest for a rifle 22 and shield, a vision slit 23 being provided in the spade part 13.
Patent GB-493020-A (GB)
Title: Method and apparatus for heating metal to be rolled
IPC: B21B45/00
Filed: 1938-03-10
Abstract: 493,020. Rolling. DEMAG AKT.-GES. March 10, 1938, No. 7527. Convention date, March 11, 1937. [Class 83 (iv)] Metal passing from the roll train 1 to the roll train 2 is caused to form a loop 11 by means of guides 3, 4, the guide 4 being open so that the loop extends into a furnace 9 whereby it is re-heated before passing into the guide 5 and on to the rolls 2. Driving apparatus 7 between the guides 3 and 4 feeds the metal into the furnace.
Patent GB-326349-A (GB)
Title: Improvements in or relating to the construction of aeroplane wings or tail planes
IPC: B64C3/00
Filed: 1929-03-07
Abstract: 326,349. Henderson, W. S. and Henderson, B. B., (trading as Hendy Aircraft Co.), and Miles, H. A. March 7, 1929. Planes, arrangement and construction of. - Aircraft wings or tail planes of the pure cantilever or semi-cantilever types, or parts thereof, have a framework comprising front and rear spars a, b, each having top and bottom flanges g, interconnected by a plurality of cross members e to form bays f and a system of diagonal bracing members h capable of withstanding compressive and tensile stresses arranged in or near each of the planes of the spar flanges. The webs c of the spans a, b, may be of plywood and have vertical stiffening members d. The members e are similar in construction to the spars. The members h are arranged two. in the plane of each pair of opposed webs in each bay; alternatively, or in addition, members h may extend from the comer of one bay to the opposite corner of the next bay. Alternatively the spars and cross members may be of sheet, and the diagonal members h of tubular metal. The flanges of the spars and cross members may be formed integrally by pressing them from sheets of metal and the units thus formed connected together by the webs. More than two spars may be employed. When the wing is formed in three portions the centre section may be similar in construction to the outer wing sections or may be constructed as a large box spar or girder to enable passengers, luggage or fuel to be accommodated. Hinges are described which are placed at the ends of the rear spars and are so inclined to the centre line of the spar section that the wings are clear of the ground in the folded position. The centre section may pass above, below, or through the fuselage. According to the Provisional Specification the wings may be arranged to fold forwards in which case the hinges are placed at the ends of the front spars.
Patent GB-563836-A (GB)
Title: Improvements in or relating to polarizing apparatus
IPC: G01N21/21
Filed: 1943-05-12
Abstract: 563,836. Polarizing apparatus. PARFITT, A. W. (Temp-R-Lens Corporation). May 12, 1943, No. 7548. [Class 97 (i)] A device for detecting strain patterns in glass comprises polarizing films arranged -in relation to an aperture in a body so that the glass may be disposed between them. As shown, a certificate for use with toughened glass spectacle lenses consists of a folded piece of material such as paper or parchment having in the front leaf an aperture 14 registering with a similar aperture in the back leaf, the two apertures being covered by polarizing films having their polarizing axes perpendicular to one another. The lens 18 to be tested is placed between the films, and comparison of the strain image so revealed with a photographic reproduction 11 of a standard image on the certificate indicates whether the lens has been toughened by the process to which the certificate relates.
Patent GB-727628-A (GB)
Title: Reversing transmission
Inventor: GINN EARL C
IPC: B28C5/42
Filed: 1953-03-19
Abstract: 727,628. Reverse-gear. CONTINENTAL MOTORS CORPORATION. March 19, 1953, No. 7604/53. Class 80 (2). Reverse and reduction gear 31, 86, between an engine 16 running at 1,200-1,600 r.p.m. and a drum 11 of a cement mixer or earth and material moving equipment, mounted on a motor vehicle and requiring a speed of 6-12 r.p.m., has the bevel reverse unit 41 mounted on the engine shaft 35 and hence subject to low torque, and followed by the reducing unit comprising a bevel stage 85, 88 and a final spur stage 13, 12. To cater for different installations the reduction bevel housing 86 is attachable selectively to the reverse gear housing 31 with the output shaft 14 projecting in any required direction. The reverse gear comprises input and output bevels 39, 40 and a free planet-carrier 41. A forward clutch 46 between the input bevel 39 and the carrier 41, a reverse brake 42 for the carrier, and an output shaft brake 47 are all engaged by hydraulic pressure provided by an input-driven pump 50 and controlled by a three-way manual valve 61 which applies the output brake 47 during change. The feed lines 67, 71, 68 of the brakes and clutch each have a permanent bleed, e.g. 75, 78, and an exhaust valve 76 which latter opens for rapid exhaustion as soon as the bleed reduces pressure after cut-off from the control-valve 61. An accessory pump 27 is belt-driven from the engine flywheel 21.
Patent GB-978811-A (GB)
Title: Improvements in or relating to developing electrophotographic copies
IPC: G03G15/22
Filed: 1961-03-02
Abstract: 978,811. Electrophotography and thermography. W. ZINDLER, [trading as LUMOPRINT ZINDLER KOMM.-GES.]. March 2, 1961 [March 18, 1960J, No. 7682/61. Headings G2C and G2H. A latent electrostatic image, formed by exposing to a radiation pattern a charged photoconductive surface, which may be on a support or selfsupporting, is uniformly exposed to heat-producing radiation while adjacent a heat-sensitive material to form a visible image corresponding to the latent image and the original radiation pattern, due to the difference in heat conductivity between the charged and uncharged areas of the latent image surface, i.e. acting as a heat mask. The heat-sensitive composition may form a layer on a support and comprise a pigment such as carbon black or a black dye in a binder which melts and transfers imagewise to the photoconductive surface e.g. paraffin or ceresin wax, a synthetic wax formed by reacting oxidized ceresin wax with low molecular weight alcohols with minor amounts of an emulsifier and paraffin oil, or a colophony resin. Alternatively the binder may contain a substance which changes colour on heating or by reacting with a material on the photoconductive surface. Reference is made to the inclusion in the heat responsive substances of a reducing agent such as metol or an oxidizing agent such as the sodium salt of o-nitrosobenzoic acid.
Patent GB-557336-A (GB)
Title: Improvements in or relating to electric supply equipment for precipitation plants for industrial gases
IPC: B03C3/70
Filed: 1942-06-05
Abstract: 557,336. Rectifying alternating current; transformers; treating gases &c. with electric discharges. WHESSOE FOUNDRY & ENGINEERING CO., Ltd., and FRANCOMBE, K. W. June 5, 1942, No. 7686. [Class 38 (ii)] [Also in Group XL] In electrical precipitation plant, the high tension supply apparatus comprising a regulating auto-transformer 1, step-up transformer 2, rectifiers 4 and their associated condensers 3 together with a surge-absorbing resistance 5 are enclosed in a common oil-filled earthed metal tank 8, and the high tension connection to the precipitator is effected by a metal-sheathed cable 13a the sheath of which is earthed through the tank. Low tension auxiliaries such as meters 6 and overload relay 7 are housed in a separate container located either on the oil tank or remote therefrom. The equipment may include inspection doors on the precipitator, a high tension earthing switch and a low tension circuit breaker so interlocked by Castell locks and keys that the doors may be opened only when the earthing switch is closed, and the latter closed only when the low tension circuit breaker is opened.
Patent GB-325714-A (GB)
Title: Improvements in, and apparatus for, the production of artificial threads by the stretch spinning process
IPC: D01D5/14
Filed: 1929-03-09
Abstract: 325,714. Courtaulds, Ltd., Hollely, W. F., and Bond, G. D. March 9, 1929. Apparatus for making filaments. - A detachable tip, which is slotted longitudinally, is provided for attachment to the lower end of the spinning funnel employed in spinning artificial silk from cuprammonium solutions of cellulose. The tip can be removed from the funnel and replaced without interrupting the spinning operation, thus allowing the deposit, which forms thereon during spinning, to be removed. The tip may be made of glass, porcelain, ebonite, or other suitable resistant material and mav be fastened to the funnel by a clip or other suitable means. In the apparatus shown in Fig. 2, the tip E is attached to the end of the funnel A by a clip F, which engages in a groove G, and is provided with a vertical slot H, through which the thread is able to pass when the tip is removed. The lower edge e of the tip, over which the thread slides, may be circular, straight, concave, or convex, as shown in Figs. 4-7 respectively.
Patent GB-672246-A (GB)
Title: Improvements in or relating to a method of and apparatus for separating solids
IPC: B03B5/42
Filed: 1949-03-23
Abstract: 672,246. Conveyers. DAVIS, N. L. March 23, 1949. No. 7901/49. Class 78 (i). [Also in Group II] A rotary conveyer, forming part of an apparatus for separating solids by the sink and float process, comprises a conveyer wheel having radially inclined flights 16 which carry material to be separated from a hopper 33, which is formed with a yielding floor 34 terminating in spring fingers 35, downwardly beneath a guard plate 19, at the lower end of which they are released, floats rising upwardly through the separating liquid, and sinks being carried on by the flights over a second guard plate 22 to be discharged through the shoot 21.
Patent GB-782156-A (GB)
Title: Improvements relating to socket holders for thermionic valves
Inventor: DEAKIN STANLEY THOMAS
IPC: H01R33/76
Filed: 1954-03-18
Abstract: 782,156. Holders for thermionic valves. EDISON SWAN ELECTRIC CO., Ltd. Dec. 6, 1954 [March 18, 1954], No. 7932/54. Class 38 (1). A valve-holder comprising an insulating body 1 with moulded-in contacts is encircled by an annular sheet-metal mounting saddle 2 having a flange bearing on the upper surface of a rib 8 on body 1 and tongues bent under the lower surface of the rib to secure the body and saddle together. The saddle has lugs 12 pressed out therefrom and undercut as shown at 13 for engagement by internal lips 17 at the lower end of a fluted screening can 16, the can being first pushed over the saddle with the lips located intermediate the lugs 12 and then rotated to engage the lips beneath the lugs. Fig. 7 shows a modification wherein the screening can 20 is of cylindrical form and is formed at each end with a bulge forming a lip 22 which clips over the lugs 12. Apertures 23 may be formed in the bulge into which the lugs fit.
Patent GB-142981-A (GB)
Title: Improvements relating to military equipment
IPC: F42B39/02
Filed: 1919-03-31
Abstract: 142,981. Griffiths, J. P. March 31, 1919. Carrying.-A rifle sling of the type described in Specification 19232/11 is in the form of a looped strap Q secured detachably by buckles D to metal D<1> on a bandoleer. The rifle is passed as far as the small of the butt between the loop of the strap and a double runner R, the runner thereupon being tightened. A metal spring clip, secured to a single runner S, is fixed by a catch s<1> to the strap.
Patent GB-896338-A (GB)
Title: Two-stroke diesel engine
IPC: F02B25/00
Filed: 1961-03-06
Abstract: 896,338. Valves; cylinders. FICHTEL & SACHS A.G. March 6, 1961 [April 28, 1960], No. 8054/61. Classes 7(2) and 7(6). Crankcase scavenging and admission control of a two-stroke diesel engine is effected by diaphragm valves 6, Figs. 1, 2 connected through guide passages 5 to transfer passages 1 the volume of which is such that it takes up substantially the whole of the fresh air sucked in. Crankcase suction caused by upward movement of the piston, draws fresh air through a channel 8, the diaphragm valve 6 and the guide passage 5 into the transfer passage 1 from which a part of the air may enter the crankcase. Downward piston movement forces the volume of relatively oil-free air contained in the passages 1, 5 through an inlet port 2. The channel 8 may be a pipe section screwed into the cylinder. In another embodiment a plurality of inlet ports may be arranged to lie partly in the guide channel.
Patent GB-235974-A (GB)
Title: Improvements in coinfreed franking machines
IPC: G07B17/00
Filed: 1924-03-31
Abstract: 235,974. Morris, E. E., and Pearse, W. March 31, 1924. Franking or postmarking letters. - An horizontal rack b having a handle a operates gears with a vertical rack d carrying at its lower end a franking stamp. The rack b is provided with coin-freed and full-stroke mechanisms of usual construction. In order to accommodate letters of all sizes, the machine has a triangular slot k into which they are inserted cornerwise. A spindle e, on which the dating or franking stamp f is pivoted, is secured between the two branches d' of a forked lower end of the rack d, and passed through slots in two cheek plates g<1> of a presser-foot g. A spring h is arranged between the rack d and a head g<2> of the presser-foot to allow for the varying thickness of letters. The head g<2> has on its underside. an inking-pad i with which the stamp f is normally in contact. When the machine is operated, the stamp is inverted in known manner by a pivoted cam link j on the presser-foot having a pin j<1> engaging a slotted arm f<1> on the stamp, the cam link being rocked by the spindle e engaging the slot therein.
Patent GB-214064-A (GB)
Title: Improvements in radiators for motor vehicles
IPC: F28F9/00
Filed: 1923-03-21
Abstract: 214,064. Wilson, H. A., Abbott, L. C., and Apps, C. Layzell-. March 21, 1923. Radiators, motor-car and like, having a central cooling unit detachable from a fixed frame member, including upper and lower headers, are provided with means to permit relative movement between the headers whilst the cooling unit is being put into or out of position. The cooling unit comprises a number of vertical tubes secured to upper and lower dished plates A, Fig. 1, holes 1 being formed in the longer side pieces of the plates to receive bolts which pass through holes D<1> in rim-like plates D, Fig. 7, and through corresponding holes F<2> in marginal flanges F<1> of the upper and lower headers F. The shorter sides of the plates D and flanges F<1> are drilled at D<2> to receive bolts L on which are mounted collars K that may slide through holes in flanges G on the vertical side frames G<1>, Fig. 4, one end of the collars abutting against the plates D. The central unit can be moved into or out of position when the bolts that pass through the holes 1, D<1> are removed, whilst the members F and D can move upwards and downwards relatively thereto, the collars K sliding through the flanges G on the side frame members. Packing is placed between the plates A, D and the flanges F<1>,
Patent GB-589934-A (GB)
Title: Improvements in and relating to contacts for electrical switching devices
IPC: H01H1/46
Filed: 1945-04-03
Abstract: 589,934. Two-part couplings. SOUTH WALES SWITCHGEAR, Ltd., and FARRER, S. April 3, 1945, No. 8190. [Class 38 (i)] [Also in Group XXXVII] A socket contact member comprises a number of contact fingers 4, held disposed about the axis of the socket by flexible members 3, which permit the fingers to move bodily towards or away from the axis of the socket, resilient means, such as helically wound strips 7 of phosphor bronze, restraining bodily movement away from the axis. The strips 3, each of which may comprise a closed loop of tinned copper foil, support the fingers from the block 1. When a plug 6 is inserted, the fingers 4 may move parallel or obliquely to the axis of the socket to provide alignment with the plug. Movement of the individual fingers towards the axis is limited by a projection 8 from the block 1, as shown in Fig. 1 or by a washer gripped between,the fingers 4 and loosely held to the block 1 by a bolt, Fig. 4 (not shown). In a further modification, Fig. 5 (not shown), movement of the fingers is restricted by an annular co-axial projection of the block 1 carrying pins which engage slots in the fingers 4. In all forms the fingers are sufliciently concave to ensure line contact with the plug.